Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw
[linux-2.6] / drivers / net / forcedeth.c
1 /*
2  * forcedeth: Ethernet driver for NVIDIA nForce media access controllers.
3  *
4  * Note: This driver is a cleanroom reimplementation based on reverse
5  *      engineered documentation written by Carl-Daniel Hailfinger
6  *      and Andrew de Quincey.
7  *
8  * NVIDIA, nForce and other NVIDIA marks are trademarks or registered
9  * trademarks of NVIDIA Corporation in the United States and other
10  * countries.
11  *
12  * Copyright (C) 2003,4,5 Manfred Spraul
13  * Copyright (C) 2004 Andrew de Quincey (wol support)
14  * Copyright (C) 2004 Carl-Daniel Hailfinger (invalid MAC handling, insane
15  *              IRQ rate fixes, bigendian fixes, cleanups, verification)
16  * Copyright (c) 2004,2005,2006,2007,2008 NVIDIA Corporation
17  *
18  * This program is free software; you can redistribute it and/or modify
19  * it under the terms of the GNU General Public License as published by
20  * the Free Software Foundation; either version 2 of the License, or
21  * (at your option) any later version.
22  *
23  * This program is distributed in the hope that it will be useful,
24  * but WITHOUT ANY WARRANTY; without even the implied warranty of
25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
26  * GNU General Public License for more details.
27  *
28  * You should have received a copy of the GNU General Public License
29  * along with this program; if not, write to the Free Software
30  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
31  *
32  * Known bugs:
33  * We suspect that on some hardware no TX done interrupts are generated.
34  * This means recovery from netif_stop_queue only happens if the hw timer
35  * interrupt fires (100 times/second, configurable with NVREG_POLL_DEFAULT)
36  * and the timer is active in the IRQMask, or if a rx packet arrives by chance.
37  * If your hardware reliably generates tx done interrupts, then you can remove
38  * DEV_NEED_TIMERIRQ from the driver_data flags.
39  * DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few
40  * superfluous timer interrupts from the nic.
41  */
42 #define FORCEDETH_VERSION               "0.61"
43 #define DRV_NAME                        "forcedeth"
44
45 #include <linux/module.h>
46 #include <linux/types.h>
47 #include <linux/pci.h>
48 #include <linux/interrupt.h>
49 #include <linux/netdevice.h>
50 #include <linux/etherdevice.h>
51 #include <linux/delay.h>
52 #include <linux/spinlock.h>
53 #include <linux/ethtool.h>
54 #include <linux/timer.h>
55 #include <linux/skbuff.h>
56 #include <linux/mii.h>
57 #include <linux/random.h>
58 #include <linux/init.h>
59 #include <linux/if_vlan.h>
60 #include <linux/dma-mapping.h>
61
62 #include <asm/irq.h>
63 #include <asm/io.h>
64 #include <asm/uaccess.h>
65 #include <asm/system.h>
66
67 #if 0
68 #define dprintk                 printk
69 #else
70 #define dprintk(x...)           do { } while (0)
71 #endif
72
73 #define TX_WORK_PER_LOOP  64
74 #define RX_WORK_PER_LOOP  64
75
76 /*
77  * Hardware access:
78  */
79
80 #define DEV_NEED_TIMERIRQ          0x00001  /* set the timer irq flag in the irq mask */
81 #define DEV_NEED_LINKTIMER         0x00002  /* poll link settings. Relies on the timer irq */
82 #define DEV_HAS_LARGEDESC          0x00004  /* device supports jumbo frames and needs packet format 2 */
83 #define DEV_HAS_HIGH_DMA           0x00008  /* device supports 64bit dma */
84 #define DEV_HAS_CHECKSUM           0x00010  /* device supports tx and rx checksum offloads */
85 #define DEV_HAS_VLAN               0x00020  /* device supports vlan tagging and striping */
86 #define DEV_HAS_MSI                0x00040  /* device supports MSI */
87 #define DEV_HAS_MSI_X              0x00080  /* device supports MSI-X */
88 #define DEV_HAS_POWER_CNTRL        0x00100  /* device supports power savings */
89 #define DEV_HAS_STATISTICS_V1      0x00200  /* device supports hw statistics version 1 */
90 #define DEV_HAS_STATISTICS_V2      0x00400  /* device supports hw statistics version 2 */
91 #define DEV_HAS_TEST_EXTENDED      0x00800  /* device supports extended diagnostic test */
92 #define DEV_HAS_MGMT_UNIT          0x01000  /* device supports management unit */
93 #define DEV_HAS_CORRECT_MACADDR    0x02000  /* device supports correct mac address order */
94 #define DEV_HAS_COLLISION_FIX      0x04000  /* device supports tx collision fix */
95 #define DEV_HAS_PAUSEFRAME_TX_V1   0x08000  /* device supports tx pause frames version 1 */
96 #define DEV_HAS_PAUSEFRAME_TX_V2   0x10000  /* device supports tx pause frames version 2 */
97 #define DEV_HAS_PAUSEFRAME_TX_V3   0x20000  /* device supports tx pause frames version 3 */
98 #define DEV_NEED_TX_LIMIT          0x40000  /* device needs to limit tx */
99 #define DEV_HAS_GEAR_MODE          0x80000  /* device supports gear mode */
100
101 enum {
102         NvRegIrqStatus = 0x000,
103 #define NVREG_IRQSTAT_MIIEVENT  0x040
104 #define NVREG_IRQSTAT_MASK              0x81ff
105         NvRegIrqMask = 0x004,
106 #define NVREG_IRQ_RX_ERROR              0x0001
107 #define NVREG_IRQ_RX                    0x0002
108 #define NVREG_IRQ_RX_NOBUF              0x0004
109 #define NVREG_IRQ_TX_ERR                0x0008
110 #define NVREG_IRQ_TX_OK                 0x0010
111 #define NVREG_IRQ_TIMER                 0x0020
112 #define NVREG_IRQ_LINK                  0x0040
113 #define NVREG_IRQ_RX_FORCED             0x0080
114 #define NVREG_IRQ_TX_FORCED             0x0100
115 #define NVREG_IRQ_RECOVER_ERROR         0x8000
116 #define NVREG_IRQMASK_THROUGHPUT        0x00df
117 #define NVREG_IRQMASK_CPU               0x0060
118 #define NVREG_IRQ_TX_ALL                (NVREG_IRQ_TX_ERR|NVREG_IRQ_TX_OK|NVREG_IRQ_TX_FORCED)
119 #define NVREG_IRQ_RX_ALL                (NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_RX_FORCED)
120 #define NVREG_IRQ_OTHER                 (NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RECOVER_ERROR)
121
122 #define NVREG_IRQ_UNKNOWN       (~(NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_TX_ERR| \
123                                         NVREG_IRQ_TX_OK|NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RX_FORCED| \
124                                         NVREG_IRQ_TX_FORCED|NVREG_IRQ_RECOVER_ERROR))
125
126         NvRegUnknownSetupReg6 = 0x008,
127 #define NVREG_UNKSETUP6_VAL             3
128
129 /*
130  * NVREG_POLL_DEFAULT is the interval length of the timer source on the nic
131  * NVREG_POLL_DEFAULT=97 would result in an interval length of 1 ms
132  */
133         NvRegPollingInterval = 0x00c,
134 #define NVREG_POLL_DEFAULT_THROUGHPUT   970 /* backup tx cleanup if loop max reached */
135 #define NVREG_POLL_DEFAULT_CPU  13
136         NvRegMSIMap0 = 0x020,
137         NvRegMSIMap1 = 0x024,
138         NvRegMSIIrqMask = 0x030,
139 #define NVREG_MSI_VECTOR_0_ENABLED 0x01
140         NvRegMisc1 = 0x080,
141 #define NVREG_MISC1_PAUSE_TX    0x01
142 #define NVREG_MISC1_HD          0x02
143 #define NVREG_MISC1_FORCE       0x3b0f3c
144
145         NvRegMacReset = 0x34,
146 #define NVREG_MAC_RESET_ASSERT  0x0F3
147         NvRegTransmitterControl = 0x084,
148 #define NVREG_XMITCTL_START     0x01
149 #define NVREG_XMITCTL_MGMT_ST   0x40000000
150 #define NVREG_XMITCTL_SYNC_MASK         0x000f0000
151 #define NVREG_XMITCTL_SYNC_NOT_READY    0x0
152 #define NVREG_XMITCTL_SYNC_PHY_INIT     0x00040000
153 #define NVREG_XMITCTL_MGMT_SEMA_MASK    0x00000f00
154 #define NVREG_XMITCTL_MGMT_SEMA_FREE    0x0
155 #define NVREG_XMITCTL_HOST_SEMA_MASK    0x0000f000
156 #define NVREG_XMITCTL_HOST_SEMA_ACQ     0x0000f000
157 #define NVREG_XMITCTL_HOST_LOADED       0x00004000
158 #define NVREG_XMITCTL_TX_PATH_EN        0x01000000
159         NvRegTransmitterStatus = 0x088,
160 #define NVREG_XMITSTAT_BUSY     0x01
161
162         NvRegPacketFilterFlags = 0x8c,
163 #define NVREG_PFF_PAUSE_RX      0x08
164 #define NVREG_PFF_ALWAYS        0x7F0000
165 #define NVREG_PFF_PROMISC       0x80
166 #define NVREG_PFF_MYADDR        0x20
167 #define NVREG_PFF_LOOPBACK      0x10
168
169         NvRegOffloadConfig = 0x90,
170 #define NVREG_OFFLOAD_HOMEPHY   0x601
171 #define NVREG_OFFLOAD_NORMAL    RX_NIC_BUFSIZE
172         NvRegReceiverControl = 0x094,
173 #define NVREG_RCVCTL_START      0x01
174 #define NVREG_RCVCTL_RX_PATH_EN 0x01000000
175         NvRegReceiverStatus = 0x98,
176 #define NVREG_RCVSTAT_BUSY      0x01
177
178         NvRegSlotTime = 0x9c,
179 #define NVREG_SLOTTIME_LEGBF_ENABLED    0x80000000
180 #define NVREG_SLOTTIME_10_100_FULL      0x00007f00
181 #define NVREG_SLOTTIME_1000_FULL        0x0003ff00
182 #define NVREG_SLOTTIME_HALF             0x0000ff00
183 #define NVREG_SLOTTIME_DEFAULT          0x00007f00
184 #define NVREG_SLOTTIME_MASK             0x000000ff
185
186         NvRegTxDeferral = 0xA0,
187 #define NVREG_TX_DEFERRAL_DEFAULT               0x15050f
188 #define NVREG_TX_DEFERRAL_RGMII_10_100          0x16070f
189 #define NVREG_TX_DEFERRAL_RGMII_1000            0x14050f
190 #define NVREG_TX_DEFERRAL_RGMII_STRETCH_10      0x16190f
191 #define NVREG_TX_DEFERRAL_RGMII_STRETCH_100     0x16300f
192 #define NVREG_TX_DEFERRAL_MII_STRETCH           0x152000
193         NvRegRxDeferral = 0xA4,
194 #define NVREG_RX_DEFERRAL_DEFAULT       0x16
195         NvRegMacAddrA = 0xA8,
196         NvRegMacAddrB = 0xAC,
197         NvRegMulticastAddrA = 0xB0,
198 #define NVREG_MCASTADDRA_FORCE  0x01
199         NvRegMulticastAddrB = 0xB4,
200         NvRegMulticastMaskA = 0xB8,
201 #define NVREG_MCASTMASKA_NONE           0xffffffff
202         NvRegMulticastMaskB = 0xBC,
203 #define NVREG_MCASTMASKB_NONE           0xffff
204
205         NvRegPhyInterface = 0xC0,
206 #define PHY_RGMII               0x10000000
207         NvRegBackOffControl = 0xC4,
208 #define NVREG_BKOFFCTRL_DEFAULT                 0x70000000
209 #define NVREG_BKOFFCTRL_SEED_MASK               0x000003ff
210 #define NVREG_BKOFFCTRL_SELECT                  24
211 #define NVREG_BKOFFCTRL_GEAR                    12
212
213         NvRegTxRingPhysAddr = 0x100,
214         NvRegRxRingPhysAddr = 0x104,
215         NvRegRingSizes = 0x108,
216 #define NVREG_RINGSZ_TXSHIFT 0
217 #define NVREG_RINGSZ_RXSHIFT 16
218         NvRegTransmitPoll = 0x10c,
219 #define NVREG_TRANSMITPOLL_MAC_ADDR_REV 0x00008000
220         NvRegLinkSpeed = 0x110,
221 #define NVREG_LINKSPEED_FORCE 0x10000
222 #define NVREG_LINKSPEED_10      1000
223 #define NVREG_LINKSPEED_100     100
224 #define NVREG_LINKSPEED_1000    50
225 #define NVREG_LINKSPEED_MASK    (0xFFF)
226         NvRegUnknownSetupReg5 = 0x130,
227 #define NVREG_UNKSETUP5_BIT31   (1<<31)
228         NvRegTxWatermark = 0x13c,
229 #define NVREG_TX_WM_DESC1_DEFAULT       0x0200010
230 #define NVREG_TX_WM_DESC2_3_DEFAULT     0x1e08000
231 #define NVREG_TX_WM_DESC2_3_1000        0xfe08000
232         NvRegTxRxControl = 0x144,
233 #define NVREG_TXRXCTL_KICK      0x0001
234 #define NVREG_TXRXCTL_BIT1      0x0002
235 #define NVREG_TXRXCTL_BIT2      0x0004
236 #define NVREG_TXRXCTL_IDLE      0x0008
237 #define NVREG_TXRXCTL_RESET     0x0010
238 #define NVREG_TXRXCTL_RXCHECK   0x0400
239 #define NVREG_TXRXCTL_DESC_1    0
240 #define NVREG_TXRXCTL_DESC_2    0x002100
241 #define NVREG_TXRXCTL_DESC_3    0xc02200
242 #define NVREG_TXRXCTL_VLANSTRIP 0x00040
243 #define NVREG_TXRXCTL_VLANINS   0x00080
244         NvRegTxRingPhysAddrHigh = 0x148,
245         NvRegRxRingPhysAddrHigh = 0x14C,
246         NvRegTxPauseFrame = 0x170,
247 #define NVREG_TX_PAUSEFRAME_DISABLE     0x0fff0080
248 #define NVREG_TX_PAUSEFRAME_ENABLE_V1   0x01800010
249 #define NVREG_TX_PAUSEFRAME_ENABLE_V2   0x056003f0
250 #define NVREG_TX_PAUSEFRAME_ENABLE_V3   0x09f00880
251         NvRegMIIStatus = 0x180,
252 #define NVREG_MIISTAT_ERROR             0x0001
253 #define NVREG_MIISTAT_LINKCHANGE        0x0008
254 #define NVREG_MIISTAT_MASK_RW           0x0007
255 #define NVREG_MIISTAT_MASK_ALL          0x000f
256         NvRegMIIMask = 0x184,
257 #define NVREG_MII_LINKCHANGE            0x0008
258
259         NvRegAdapterControl = 0x188,
260 #define NVREG_ADAPTCTL_START    0x02
261 #define NVREG_ADAPTCTL_LINKUP   0x04
262 #define NVREG_ADAPTCTL_PHYVALID 0x40000
263 #define NVREG_ADAPTCTL_RUNNING  0x100000
264 #define NVREG_ADAPTCTL_PHYSHIFT 24
265         NvRegMIISpeed = 0x18c,
266 #define NVREG_MIISPEED_BIT8     (1<<8)
267 #define NVREG_MIIDELAY  5
268         NvRegMIIControl = 0x190,
269 #define NVREG_MIICTL_INUSE      0x08000
270 #define NVREG_MIICTL_WRITE      0x00400
271 #define NVREG_MIICTL_ADDRSHIFT  5
272         NvRegMIIData = 0x194,
273         NvRegWakeUpFlags = 0x200,
274 #define NVREG_WAKEUPFLAGS_VAL           0x7770
275 #define NVREG_WAKEUPFLAGS_BUSYSHIFT     24
276 #define NVREG_WAKEUPFLAGS_ENABLESHIFT   16
277 #define NVREG_WAKEUPFLAGS_D3SHIFT       12
278 #define NVREG_WAKEUPFLAGS_D2SHIFT       8
279 #define NVREG_WAKEUPFLAGS_D1SHIFT       4
280 #define NVREG_WAKEUPFLAGS_D0SHIFT       0
281 #define NVREG_WAKEUPFLAGS_ACCEPT_MAGPAT         0x01
282 #define NVREG_WAKEUPFLAGS_ACCEPT_WAKEUPPAT      0x02
283 #define NVREG_WAKEUPFLAGS_ACCEPT_LINKCHANGE     0x04
284 #define NVREG_WAKEUPFLAGS_ENABLE        0x1111
285
286         NvRegPatternCRC = 0x204,
287         NvRegPatternMask = 0x208,
288         NvRegPowerCap = 0x268,
289 #define NVREG_POWERCAP_D3SUPP   (1<<30)
290 #define NVREG_POWERCAP_D2SUPP   (1<<26)
291 #define NVREG_POWERCAP_D1SUPP   (1<<25)
292         NvRegPowerState = 0x26c,
293 #define NVREG_POWERSTATE_POWEREDUP      0x8000
294 #define NVREG_POWERSTATE_VALID          0x0100
295 #define NVREG_POWERSTATE_MASK           0x0003
296 #define NVREG_POWERSTATE_D0             0x0000
297 #define NVREG_POWERSTATE_D1             0x0001
298 #define NVREG_POWERSTATE_D2             0x0002
299 #define NVREG_POWERSTATE_D3             0x0003
300         NvRegTxCnt = 0x280,
301         NvRegTxZeroReXmt = 0x284,
302         NvRegTxOneReXmt = 0x288,
303         NvRegTxManyReXmt = 0x28c,
304         NvRegTxLateCol = 0x290,
305         NvRegTxUnderflow = 0x294,
306         NvRegTxLossCarrier = 0x298,
307         NvRegTxExcessDef = 0x29c,
308         NvRegTxRetryErr = 0x2a0,
309         NvRegRxFrameErr = 0x2a4,
310         NvRegRxExtraByte = 0x2a8,
311         NvRegRxLateCol = 0x2ac,
312         NvRegRxRunt = 0x2b0,
313         NvRegRxFrameTooLong = 0x2b4,
314         NvRegRxOverflow = 0x2b8,
315         NvRegRxFCSErr = 0x2bc,
316         NvRegRxFrameAlignErr = 0x2c0,
317         NvRegRxLenErr = 0x2c4,
318         NvRegRxUnicast = 0x2c8,
319         NvRegRxMulticast = 0x2cc,
320         NvRegRxBroadcast = 0x2d0,
321         NvRegTxDef = 0x2d4,
322         NvRegTxFrame = 0x2d8,
323         NvRegRxCnt = 0x2dc,
324         NvRegTxPause = 0x2e0,
325         NvRegRxPause = 0x2e4,
326         NvRegRxDropFrame = 0x2e8,
327         NvRegVlanControl = 0x300,
328 #define NVREG_VLANCONTROL_ENABLE        0x2000
329         NvRegMSIXMap0 = 0x3e0,
330         NvRegMSIXMap1 = 0x3e4,
331         NvRegMSIXIrqStatus = 0x3f0,
332
333         NvRegPowerState2 = 0x600,
334 #define NVREG_POWERSTATE2_POWERUP_MASK          0x0F11
335 #define NVREG_POWERSTATE2_POWERUP_REV_A3        0x0001
336 };
337
338 /* Big endian: should work, but is untested */
339 struct ring_desc {
340         __le32 buf;
341         __le32 flaglen;
342 };
343
344 struct ring_desc_ex {
345         __le32 bufhigh;
346         __le32 buflow;
347         __le32 txvlan;
348         __le32 flaglen;
349 };
350
351 union ring_type {
352         struct ring_desc* orig;
353         struct ring_desc_ex* ex;
354 };
355
356 #define FLAG_MASK_V1 0xffff0000
357 #define FLAG_MASK_V2 0xffffc000
358 #define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
359 #define LEN_MASK_V2 (0xffffffff ^ FLAG_MASK_V2)
360
361 #define NV_TX_LASTPACKET        (1<<16)
362 #define NV_TX_RETRYERROR        (1<<19)
363 #define NV_TX_RETRYCOUNT_MASK   (0xF<<20)
364 #define NV_TX_FORCED_INTERRUPT  (1<<24)
365 #define NV_TX_DEFERRED          (1<<26)
366 #define NV_TX_CARRIERLOST       (1<<27)
367 #define NV_TX_LATECOLLISION     (1<<28)
368 #define NV_TX_UNDERFLOW         (1<<29)
369 #define NV_TX_ERROR             (1<<30)
370 #define NV_TX_VALID             (1<<31)
371
372 #define NV_TX2_LASTPACKET       (1<<29)
373 #define NV_TX2_RETRYERROR       (1<<18)
374 #define NV_TX2_RETRYCOUNT_MASK  (0xF<<19)
375 #define NV_TX2_FORCED_INTERRUPT (1<<30)
376 #define NV_TX2_DEFERRED         (1<<25)
377 #define NV_TX2_CARRIERLOST      (1<<26)
378 #define NV_TX2_LATECOLLISION    (1<<27)
379 #define NV_TX2_UNDERFLOW        (1<<28)
380 /* error and valid are the same for both */
381 #define NV_TX2_ERROR            (1<<30)
382 #define NV_TX2_VALID            (1<<31)
383 #define NV_TX2_TSO              (1<<28)
384 #define NV_TX2_TSO_SHIFT        14
385 #define NV_TX2_TSO_MAX_SHIFT    14
386 #define NV_TX2_TSO_MAX_SIZE     (1<<NV_TX2_TSO_MAX_SHIFT)
387 #define NV_TX2_CHECKSUM_L3      (1<<27)
388 #define NV_TX2_CHECKSUM_L4      (1<<26)
389
390 #define NV_TX3_VLAN_TAG_PRESENT (1<<18)
391
392 #define NV_RX_DESCRIPTORVALID   (1<<16)
393 #define NV_RX_MISSEDFRAME       (1<<17)
394 #define NV_RX_SUBSTRACT1        (1<<18)
395 #define NV_RX_ERROR1            (1<<23)
396 #define NV_RX_ERROR2            (1<<24)
397 #define NV_RX_ERROR3            (1<<25)
398 #define NV_RX_ERROR4            (1<<26)
399 #define NV_RX_CRCERR            (1<<27)
400 #define NV_RX_OVERFLOW          (1<<28)
401 #define NV_RX_FRAMINGERR        (1<<29)
402 #define NV_RX_ERROR             (1<<30)
403 #define NV_RX_AVAIL             (1<<31)
404
405 #define NV_RX2_CHECKSUMMASK     (0x1C000000)
406 #define NV_RX2_CHECKSUM_IP      (0x10000000)
407 #define NV_RX2_CHECKSUM_IP_TCP  (0x14000000)
408 #define NV_RX2_CHECKSUM_IP_UDP  (0x18000000)
409 #define NV_RX2_DESCRIPTORVALID  (1<<29)
410 #define NV_RX2_SUBSTRACT1       (1<<25)
411 #define NV_RX2_ERROR1           (1<<18)
412 #define NV_RX2_ERROR2           (1<<19)
413 #define NV_RX2_ERROR3           (1<<20)
414 #define NV_RX2_ERROR4           (1<<21)
415 #define NV_RX2_CRCERR           (1<<22)
416 #define NV_RX2_OVERFLOW         (1<<23)
417 #define NV_RX2_FRAMINGERR       (1<<24)
418 /* error and avail are the same for both */
419 #define NV_RX2_ERROR            (1<<30)
420 #define NV_RX2_AVAIL            (1<<31)
421
422 #define NV_RX3_VLAN_TAG_PRESENT (1<<16)
423 #define NV_RX3_VLAN_TAG_MASK    (0x0000FFFF)
424
425 /* Miscelaneous hardware related defines: */
426 #define NV_PCI_REGSZ_VER1       0x270
427 #define NV_PCI_REGSZ_VER2       0x2d4
428 #define NV_PCI_REGSZ_VER3       0x604
429
430 /* various timeout delays: all in usec */
431 #define NV_TXRX_RESET_DELAY     4
432 #define NV_TXSTOP_DELAY1        10
433 #define NV_TXSTOP_DELAY1MAX     500000
434 #define NV_TXSTOP_DELAY2        100
435 #define NV_RXSTOP_DELAY1        10
436 #define NV_RXSTOP_DELAY1MAX     500000
437 #define NV_RXSTOP_DELAY2        100
438 #define NV_SETUP5_DELAY         5
439 #define NV_SETUP5_DELAYMAX      50000
440 #define NV_POWERUP_DELAY        5
441 #define NV_POWERUP_DELAYMAX     5000
442 #define NV_MIIBUSY_DELAY        50
443 #define NV_MIIPHY_DELAY 10
444 #define NV_MIIPHY_DELAYMAX      10000
445 #define NV_MAC_RESET_DELAY      64
446
447 #define NV_WAKEUPPATTERNS       5
448 #define NV_WAKEUPMASKENTRIES    4
449
450 /* General driver defaults */
451 #define NV_WATCHDOG_TIMEO       (5*HZ)
452
453 #define RX_RING_DEFAULT         128
454 #define TX_RING_DEFAULT         256
455 #define RX_RING_MIN             128
456 #define TX_RING_MIN             64
457 #define RING_MAX_DESC_VER_1     1024
458 #define RING_MAX_DESC_VER_2_3   16384
459
460 /* rx/tx mac addr + type + vlan + align + slack*/
461 #define NV_RX_HEADERS           (64)
462 /* even more slack. */
463 #define NV_RX_ALLOC_PAD         (64)
464
465 /* maximum mtu size */
466 #define NV_PKTLIMIT_1   ETH_DATA_LEN    /* hard limit not known */
467 #define NV_PKTLIMIT_2   9100    /* Actual limit according to NVidia: 9202 */
468
469 #define OOM_REFILL      (1+HZ/20)
470 #define POLL_WAIT       (1+HZ/100)
471 #define LINK_TIMEOUT    (3*HZ)
472 #define STATS_INTERVAL  (10*HZ)
473
474 /*
475  * desc_ver values:
476  * The nic supports three different descriptor types:
477  * - DESC_VER_1: Original
478  * - DESC_VER_2: support for jumbo frames.
479  * - DESC_VER_3: 64-bit format.
480  */
481 #define DESC_VER_1      1
482 #define DESC_VER_2      2
483 #define DESC_VER_3      3
484
485 /* PHY defines */
486 #define PHY_OUI_MARVELL         0x5043
487 #define PHY_OUI_CICADA          0x03f1
488 #define PHY_OUI_VITESSE         0x01c1
489 #define PHY_OUI_REALTEK         0x0732
490 #define PHY_OUI_REALTEK2        0x0020
491 #define PHYID1_OUI_MASK 0x03ff
492 #define PHYID1_OUI_SHFT 6
493 #define PHYID2_OUI_MASK 0xfc00
494 #define PHYID2_OUI_SHFT 10
495 #define PHYID2_MODEL_MASK               0x03f0
496 #define PHY_MODEL_REALTEK_8211          0x0110
497 #define PHY_REV_MASK                    0x0001
498 #define PHY_REV_REALTEK_8211B           0x0000
499 #define PHY_REV_REALTEK_8211C           0x0001
500 #define PHY_MODEL_REALTEK_8201          0x0200
501 #define PHY_MODEL_MARVELL_E3016         0x0220
502 #define PHY_MARVELL_E3016_INITMASK      0x0300
503 #define PHY_CICADA_INIT1        0x0f000
504 #define PHY_CICADA_INIT2        0x0e00
505 #define PHY_CICADA_INIT3        0x01000
506 #define PHY_CICADA_INIT4        0x0200
507 #define PHY_CICADA_INIT5        0x0004
508 #define PHY_CICADA_INIT6        0x02000
509 #define PHY_VITESSE_INIT_REG1   0x1f
510 #define PHY_VITESSE_INIT_REG2   0x10
511 #define PHY_VITESSE_INIT_REG3   0x11
512 #define PHY_VITESSE_INIT_REG4   0x12
513 #define PHY_VITESSE_INIT_MSK1   0xc
514 #define PHY_VITESSE_INIT_MSK2   0x0180
515 #define PHY_VITESSE_INIT1       0x52b5
516 #define PHY_VITESSE_INIT2       0xaf8a
517 #define PHY_VITESSE_INIT3       0x8
518 #define PHY_VITESSE_INIT4       0x8f8a
519 #define PHY_VITESSE_INIT5       0xaf86
520 #define PHY_VITESSE_INIT6       0x8f86
521 #define PHY_VITESSE_INIT7       0xaf82
522 #define PHY_VITESSE_INIT8       0x0100
523 #define PHY_VITESSE_INIT9       0x8f82
524 #define PHY_VITESSE_INIT10      0x0
525 #define PHY_REALTEK_INIT_REG1   0x1f
526 #define PHY_REALTEK_INIT_REG2   0x19
527 #define PHY_REALTEK_INIT_REG3   0x13
528 #define PHY_REALTEK_INIT_REG4   0x14
529 #define PHY_REALTEK_INIT_REG5   0x18
530 #define PHY_REALTEK_INIT_REG6   0x11
531 #define PHY_REALTEK_INIT1       0x0000
532 #define PHY_REALTEK_INIT2       0x8e00
533 #define PHY_REALTEK_INIT3       0x0001
534 #define PHY_REALTEK_INIT4       0xad17
535 #define PHY_REALTEK_INIT5       0xfb54
536 #define PHY_REALTEK_INIT6       0xf5c7
537 #define PHY_REALTEK_INIT7       0x1000
538 #define PHY_REALTEK_INIT8       0x0003
539 #define PHY_REALTEK_INIT_MSK1   0x0003
540
541 #define PHY_GIGABIT     0x0100
542
543 #define PHY_TIMEOUT     0x1
544 #define PHY_ERROR       0x2
545
546 #define PHY_100 0x1
547 #define PHY_1000        0x2
548 #define PHY_HALF        0x100
549
550 #define NV_PAUSEFRAME_RX_CAPABLE 0x0001
551 #define NV_PAUSEFRAME_TX_CAPABLE 0x0002
552 #define NV_PAUSEFRAME_RX_ENABLE  0x0004
553 #define NV_PAUSEFRAME_TX_ENABLE  0x0008
554 #define NV_PAUSEFRAME_RX_REQ     0x0010
555 #define NV_PAUSEFRAME_TX_REQ     0x0020
556 #define NV_PAUSEFRAME_AUTONEG    0x0040
557
558 /* MSI/MSI-X defines */
559 #define NV_MSI_X_MAX_VECTORS  8
560 #define NV_MSI_X_VECTORS_MASK 0x000f
561 #define NV_MSI_CAPABLE        0x0010
562 #define NV_MSI_X_CAPABLE      0x0020
563 #define NV_MSI_ENABLED        0x0040
564 #define NV_MSI_X_ENABLED      0x0080
565
566 #define NV_MSI_X_VECTOR_ALL   0x0
567 #define NV_MSI_X_VECTOR_RX    0x0
568 #define NV_MSI_X_VECTOR_TX    0x1
569 #define NV_MSI_X_VECTOR_OTHER 0x2
570
571 #define NV_RESTART_TX         0x1
572 #define NV_RESTART_RX         0x2
573
574 #define NV_TX_LIMIT_COUNT     16
575
576 /* statistics */
577 struct nv_ethtool_str {
578         char name[ETH_GSTRING_LEN];
579 };
580
581 static const struct nv_ethtool_str nv_estats_str[] = {
582         { "tx_bytes" },
583         { "tx_zero_rexmt" },
584         { "tx_one_rexmt" },
585         { "tx_many_rexmt" },
586         { "tx_late_collision" },
587         { "tx_fifo_errors" },
588         { "tx_carrier_errors" },
589         { "tx_excess_deferral" },
590         { "tx_retry_error" },
591         { "rx_frame_error" },
592         { "rx_extra_byte" },
593         { "rx_late_collision" },
594         { "rx_runt" },
595         { "rx_frame_too_long" },
596         { "rx_over_errors" },
597         { "rx_crc_errors" },
598         { "rx_frame_align_error" },
599         { "rx_length_error" },
600         { "rx_unicast" },
601         { "rx_multicast" },
602         { "rx_broadcast" },
603         { "rx_packets" },
604         { "rx_errors_total" },
605         { "tx_errors_total" },
606
607         /* version 2 stats */
608         { "tx_deferral" },
609         { "tx_packets" },
610         { "rx_bytes" },
611         { "tx_pause" },
612         { "rx_pause" },
613         { "rx_drop_frame" }
614 };
615
616 struct nv_ethtool_stats {
617         u64 tx_bytes;
618         u64 tx_zero_rexmt;
619         u64 tx_one_rexmt;
620         u64 tx_many_rexmt;
621         u64 tx_late_collision;
622         u64 tx_fifo_errors;
623         u64 tx_carrier_errors;
624         u64 tx_excess_deferral;
625         u64 tx_retry_error;
626         u64 rx_frame_error;
627         u64 rx_extra_byte;
628         u64 rx_late_collision;
629         u64 rx_runt;
630         u64 rx_frame_too_long;
631         u64 rx_over_errors;
632         u64 rx_crc_errors;
633         u64 rx_frame_align_error;
634         u64 rx_length_error;
635         u64 rx_unicast;
636         u64 rx_multicast;
637         u64 rx_broadcast;
638         u64 rx_packets;
639         u64 rx_errors_total;
640         u64 tx_errors_total;
641
642         /* version 2 stats */
643         u64 tx_deferral;
644         u64 tx_packets;
645         u64 rx_bytes;
646         u64 tx_pause;
647         u64 rx_pause;
648         u64 rx_drop_frame;
649 };
650
651 #define NV_DEV_STATISTICS_V2_COUNT (sizeof(struct nv_ethtool_stats)/sizeof(u64))
652 #define NV_DEV_STATISTICS_V1_COUNT (NV_DEV_STATISTICS_V2_COUNT - 6)
653
654 /* diagnostics */
655 #define NV_TEST_COUNT_BASE 3
656 #define NV_TEST_COUNT_EXTENDED 4
657
658 static const struct nv_ethtool_str nv_etests_str[] = {
659         { "link      (online/offline)" },
660         { "register  (offline)       " },
661         { "interrupt (offline)       " },
662         { "loopback  (offline)       " }
663 };
664
665 struct register_test {
666         __u32 reg;
667         __u32 mask;
668 };
669
670 static const struct register_test nv_registers_test[] = {
671         { NvRegUnknownSetupReg6, 0x01 },
672         { NvRegMisc1, 0x03c },
673         { NvRegOffloadConfig, 0x03ff },
674         { NvRegMulticastAddrA, 0xffffffff },
675         { NvRegTxWatermark, 0x0ff },
676         { NvRegWakeUpFlags, 0x07777 },
677         { 0,0 }
678 };
679
680 struct nv_skb_map {
681         struct sk_buff *skb;
682         dma_addr_t dma;
683         unsigned int dma_len;
684         struct ring_desc_ex *first_tx_desc;
685         struct nv_skb_map *next_tx_ctx;
686 };
687
688 /*
689  * SMP locking:
690  * All hardware access under dev->priv->lock, except the performance
691  * critical parts:
692  * - rx is (pseudo-) lockless: it relies on the single-threading provided
693  *      by the arch code for interrupts.
694  * - tx setup is lockless: it relies on netif_tx_lock. Actual submission
695  *      needs dev->priv->lock :-(
696  * - set_multicast_list: preparation lockless, relies on netif_tx_lock.
697  */
698
699 /* in dev: base, irq */
700 struct fe_priv {
701         spinlock_t lock;
702
703         struct net_device *dev;
704         struct napi_struct napi;
705
706         /* General data:
707          * Locking: spin_lock(&np->lock); */
708         struct nv_ethtool_stats estats;
709         int in_shutdown;
710         u32 linkspeed;
711         int duplex;
712         int autoneg;
713         int fixed_mode;
714         int phyaddr;
715         int wolenabled;
716         unsigned int phy_oui;
717         unsigned int phy_model;
718         unsigned int phy_rev;
719         u16 gigabit;
720         int intr_test;
721         int recover_error;
722
723         /* General data: RO fields */
724         dma_addr_t ring_addr;
725         struct pci_dev *pci_dev;
726         u32 orig_mac[2];
727         u32 irqmask;
728         u32 desc_ver;
729         u32 txrxctl_bits;
730         u32 vlanctl_bits;
731         u32 driver_data;
732         u32 device_id;
733         u32 register_size;
734         int rx_csum;
735         u32 mac_in_use;
736
737         void __iomem *base;
738
739         /* rx specific fields.
740          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
741          */
742         union ring_type get_rx, put_rx, first_rx, last_rx;
743         struct nv_skb_map *get_rx_ctx, *put_rx_ctx;
744         struct nv_skb_map *first_rx_ctx, *last_rx_ctx;
745         struct nv_skb_map *rx_skb;
746
747         union ring_type rx_ring;
748         unsigned int rx_buf_sz;
749         unsigned int pkt_limit;
750         struct timer_list oom_kick;
751         struct timer_list nic_poll;
752         struct timer_list stats_poll;
753         u32 nic_poll_irq;
754         int rx_ring_size;
755
756         /* media detection workaround.
757          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
758          */
759         int need_linktimer;
760         unsigned long link_timeout;
761         /*
762          * tx specific fields.
763          */
764         union ring_type get_tx, put_tx, first_tx, last_tx;
765         struct nv_skb_map *get_tx_ctx, *put_tx_ctx;
766         struct nv_skb_map *first_tx_ctx, *last_tx_ctx;
767         struct nv_skb_map *tx_skb;
768
769         union ring_type tx_ring;
770         u32 tx_flags;
771         int tx_ring_size;
772         int tx_limit;
773         u32 tx_pkts_in_progress;
774         struct nv_skb_map *tx_change_owner;
775         struct nv_skb_map *tx_end_flip;
776         int tx_stop;
777
778         /* vlan fields */
779         struct vlan_group *vlangrp;
780
781         /* msi/msi-x fields */
782         u32 msi_flags;
783         struct msix_entry msi_x_entry[NV_MSI_X_MAX_VECTORS];
784
785         /* flow control */
786         u32 pause_flags;
787 };
788
789 /*
790  * Maximum number of loops until we assume that a bit in the irq mask
791  * is stuck. Overridable with module param.
792  */
793 static int max_interrupt_work = 5;
794
795 /*
796  * Optimization can be either throuput mode or cpu mode
797  *
798  * Throughput Mode: Every tx and rx packet will generate an interrupt.
799  * CPU Mode: Interrupts are controlled by a timer.
800  */
801 enum {
802         NV_OPTIMIZATION_MODE_THROUGHPUT,
803         NV_OPTIMIZATION_MODE_CPU
804 };
805 static int optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
806
807 /*
808  * Poll interval for timer irq
809  *
810  * This interval determines how frequent an interrupt is generated.
811  * The is value is determined by [(time_in_micro_secs * 100) / (2^10)]
812  * Min = 0, and Max = 65535
813  */
814 static int poll_interval = -1;
815
816 /*
817  * MSI interrupts
818  */
819 enum {
820         NV_MSI_INT_DISABLED,
821         NV_MSI_INT_ENABLED
822 };
823 static int msi = NV_MSI_INT_ENABLED;
824
825 /*
826  * MSIX interrupts
827  */
828 enum {
829         NV_MSIX_INT_DISABLED,
830         NV_MSIX_INT_ENABLED
831 };
832 static int msix = NV_MSIX_INT_DISABLED;
833
834 /*
835  * DMA 64bit
836  */
837 enum {
838         NV_DMA_64BIT_DISABLED,
839         NV_DMA_64BIT_ENABLED
840 };
841 static int dma_64bit = NV_DMA_64BIT_ENABLED;
842
843 /*
844  * Crossover Detection
845  * Realtek 8201 phy + some OEM boards do not work properly.
846  */
847 enum {
848         NV_CROSSOVER_DETECTION_DISABLED,
849         NV_CROSSOVER_DETECTION_ENABLED
850 };
851 static int phy_cross = NV_CROSSOVER_DETECTION_DISABLED;
852
853 static inline struct fe_priv *get_nvpriv(struct net_device *dev)
854 {
855         return netdev_priv(dev);
856 }
857
858 static inline u8 __iomem *get_hwbase(struct net_device *dev)
859 {
860         return ((struct fe_priv *)netdev_priv(dev))->base;
861 }
862
863 static inline void pci_push(u8 __iomem *base)
864 {
865         /* force out pending posted writes */
866         readl(base);
867 }
868
869 static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
870 {
871         return le32_to_cpu(prd->flaglen)
872                 & ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
873 }
874
875 static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
876 {
877         return le32_to_cpu(prd->flaglen) & LEN_MASK_V2;
878 }
879
880 static bool nv_optimized(struct fe_priv *np)
881 {
882         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
883                 return false;
884         return true;
885 }
886
887 static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
888                                 int delay, int delaymax, const char *msg)
889 {
890         u8 __iomem *base = get_hwbase(dev);
891
892         pci_push(base);
893         do {
894                 udelay(delay);
895                 delaymax -= delay;
896                 if (delaymax < 0) {
897                         if (msg)
898                                 printk(msg);
899                         return 1;
900                 }
901         } while ((readl(base + offset) & mask) != target);
902         return 0;
903 }
904
905 #define NV_SETUP_RX_RING 0x01
906 #define NV_SETUP_TX_RING 0x02
907
908 static inline u32 dma_low(dma_addr_t addr)
909 {
910         return addr;
911 }
912
913 static inline u32 dma_high(dma_addr_t addr)
914 {
915         return addr>>31>>1;     /* 0 if 32bit, shift down by 32 if 64bit */
916 }
917
918 static void setup_hw_rings(struct net_device *dev, int rxtx_flags)
919 {
920         struct fe_priv *np = get_nvpriv(dev);
921         u8 __iomem *base = get_hwbase(dev);
922
923         if (!nv_optimized(np)) {
924                 if (rxtx_flags & NV_SETUP_RX_RING) {
925                         writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
926                 }
927                 if (rxtx_flags & NV_SETUP_TX_RING) {
928                         writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
929                 }
930         } else {
931                 if (rxtx_flags & NV_SETUP_RX_RING) {
932                         writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
933                         writel(dma_high(np->ring_addr), base + NvRegRxRingPhysAddrHigh);
934                 }
935                 if (rxtx_flags & NV_SETUP_TX_RING) {
936                         writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
937                         writel(dma_high(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddrHigh);
938                 }
939         }
940 }
941
942 static void free_rings(struct net_device *dev)
943 {
944         struct fe_priv *np = get_nvpriv(dev);
945
946         if (!nv_optimized(np)) {
947                 if (np->rx_ring.orig)
948                         pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
949                                             np->rx_ring.orig, np->ring_addr);
950         } else {
951                 if (np->rx_ring.ex)
952                         pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
953                                             np->rx_ring.ex, np->ring_addr);
954         }
955         if (np->rx_skb)
956                 kfree(np->rx_skb);
957         if (np->tx_skb)
958                 kfree(np->tx_skb);
959 }
960
961 static int using_multi_irqs(struct net_device *dev)
962 {
963         struct fe_priv *np = get_nvpriv(dev);
964
965         if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
966             ((np->msi_flags & NV_MSI_X_ENABLED) &&
967              ((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1)))
968                 return 0;
969         else
970                 return 1;
971 }
972
973 static void nv_enable_irq(struct net_device *dev)
974 {
975         struct fe_priv *np = get_nvpriv(dev);
976
977         if (!using_multi_irqs(dev)) {
978                 if (np->msi_flags & NV_MSI_X_ENABLED)
979                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
980                 else
981                         enable_irq(np->pci_dev->irq);
982         } else {
983                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
984                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
985                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
986         }
987 }
988
989 static void nv_disable_irq(struct net_device *dev)
990 {
991         struct fe_priv *np = get_nvpriv(dev);
992
993         if (!using_multi_irqs(dev)) {
994                 if (np->msi_flags & NV_MSI_X_ENABLED)
995                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
996                 else
997                         disable_irq(np->pci_dev->irq);
998         } else {
999                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1000                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
1001                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
1002         }
1003 }
1004
1005 /* In MSIX mode, a write to irqmask behaves as XOR */
1006 static void nv_enable_hw_interrupts(struct net_device *dev, u32 mask)
1007 {
1008         u8 __iomem *base = get_hwbase(dev);
1009
1010         writel(mask, base + NvRegIrqMask);
1011 }
1012
1013 static void nv_disable_hw_interrupts(struct net_device *dev, u32 mask)
1014 {
1015         struct fe_priv *np = get_nvpriv(dev);
1016         u8 __iomem *base = get_hwbase(dev);
1017
1018         if (np->msi_flags & NV_MSI_X_ENABLED) {
1019                 writel(mask, base + NvRegIrqMask);
1020         } else {
1021                 if (np->msi_flags & NV_MSI_ENABLED)
1022                         writel(0, base + NvRegMSIIrqMask);
1023                 writel(0, base + NvRegIrqMask);
1024         }
1025 }
1026
1027 #define MII_READ        (-1)
1028 /* mii_rw: read/write a register on the PHY.
1029  *
1030  * Caller must guarantee serialization
1031  */
1032 static int mii_rw(struct net_device *dev, int addr, int miireg, int value)
1033 {
1034         u8 __iomem *base = get_hwbase(dev);
1035         u32 reg;
1036         int retval;
1037
1038         writel(NVREG_MIISTAT_MASK_RW, base + NvRegMIIStatus);
1039
1040         reg = readl(base + NvRegMIIControl);
1041         if (reg & NVREG_MIICTL_INUSE) {
1042                 writel(NVREG_MIICTL_INUSE, base + NvRegMIIControl);
1043                 udelay(NV_MIIBUSY_DELAY);
1044         }
1045
1046         reg = (addr << NVREG_MIICTL_ADDRSHIFT) | miireg;
1047         if (value != MII_READ) {
1048                 writel(value, base + NvRegMIIData);
1049                 reg |= NVREG_MIICTL_WRITE;
1050         }
1051         writel(reg, base + NvRegMIIControl);
1052
1053         if (reg_delay(dev, NvRegMIIControl, NVREG_MIICTL_INUSE, 0,
1054                         NV_MIIPHY_DELAY, NV_MIIPHY_DELAYMAX, NULL)) {
1055                 dprintk(KERN_DEBUG "%s: mii_rw of reg %d at PHY %d timed out.\n",
1056                                 dev->name, miireg, addr);
1057                 retval = -1;
1058         } else if (value != MII_READ) {
1059                 /* it was a write operation - fewer failures are detectable */
1060                 dprintk(KERN_DEBUG "%s: mii_rw wrote 0x%x to reg %d at PHY %d\n",
1061                                 dev->name, value, miireg, addr);
1062                 retval = 0;
1063         } else if (readl(base + NvRegMIIStatus) & NVREG_MIISTAT_ERROR) {
1064                 dprintk(KERN_DEBUG "%s: mii_rw of reg %d at PHY %d failed.\n",
1065                                 dev->name, miireg, addr);
1066                 retval = -1;
1067         } else {
1068                 retval = readl(base + NvRegMIIData);
1069                 dprintk(KERN_DEBUG "%s: mii_rw read from reg %d at PHY %d: 0x%x.\n",
1070                                 dev->name, miireg, addr, retval);
1071         }
1072
1073         return retval;
1074 }
1075
1076 static int phy_reset(struct net_device *dev, u32 bmcr_setup)
1077 {
1078         struct fe_priv *np = netdev_priv(dev);
1079         u32 miicontrol;
1080         unsigned int tries = 0;
1081
1082         miicontrol = BMCR_RESET | bmcr_setup;
1083         if (mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol)) {
1084                 return -1;
1085         }
1086
1087         /* wait for 500ms */
1088         msleep(500);
1089
1090         /* must wait till reset is deasserted */
1091         while (miicontrol & BMCR_RESET) {
1092                 msleep(10);
1093                 miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1094                 /* FIXME: 100 tries seem excessive */
1095                 if (tries++ > 100)
1096                         return -1;
1097         }
1098         return 0;
1099 }
1100
1101 static int phy_init(struct net_device *dev)
1102 {
1103         struct fe_priv *np = get_nvpriv(dev);
1104         u8 __iomem *base = get_hwbase(dev);
1105         u32 phyinterface, phy_reserved, mii_status, mii_control, mii_control_1000,reg;
1106
1107         /* phy errata for E3016 phy */
1108         if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
1109                 reg = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1110                 reg &= ~PHY_MARVELL_E3016_INITMASK;
1111                 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, reg)) {
1112                         printk(KERN_INFO "%s: phy write to errata reg failed.\n", pci_name(np->pci_dev));
1113                         return PHY_ERROR;
1114                 }
1115         }
1116         if (np->phy_oui == PHY_OUI_REALTEK) {
1117                 if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1118                     np->phy_rev == PHY_REV_REALTEK_8211B) {
1119                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1)) {
1120                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1121                                 return PHY_ERROR;
1122                         }
1123                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, PHY_REALTEK_INIT2)) {
1124                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1125                                 return PHY_ERROR;
1126                         }
1127                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3)) {
1128                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1129                                 return PHY_ERROR;
1130                         }
1131                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG3, PHY_REALTEK_INIT4)) {
1132                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1133                                 return PHY_ERROR;
1134                         }
1135                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG4, PHY_REALTEK_INIT5)) {
1136                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1137                                 return PHY_ERROR;
1138                         }
1139                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG5, PHY_REALTEK_INIT6)) {
1140                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1141                                 return PHY_ERROR;
1142                         }
1143                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1)) {
1144                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1145                                 return PHY_ERROR;
1146                         }
1147                 }
1148                 if (np->phy_model == PHY_MODEL_REALTEK_8201) {
1149                         if (np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_32 ||
1150                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_33 ||
1151                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_34 ||
1152                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_35 ||
1153                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_36 ||
1154                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_37 ||
1155                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_38 ||
1156                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_39) {
1157                                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, MII_READ);
1158                                 phy_reserved |= PHY_REALTEK_INIT7;
1159                                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, phy_reserved)) {
1160                                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1161                                         return PHY_ERROR;
1162                                 }
1163                         }
1164                 }
1165         }
1166
1167         /* set advertise register */
1168         reg = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
1169         reg |= (ADVERTISE_10HALF|ADVERTISE_10FULL|ADVERTISE_100HALF|ADVERTISE_100FULL|ADVERTISE_PAUSE_ASYM|ADVERTISE_PAUSE_CAP);
1170         if (mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg)) {
1171                 printk(KERN_INFO "%s: phy write to advertise failed.\n", pci_name(np->pci_dev));
1172                 return PHY_ERROR;
1173         }
1174
1175         /* get phy interface type */
1176         phyinterface = readl(base + NvRegPhyInterface);
1177
1178         /* see if gigabit phy */
1179         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
1180         if (mii_status & PHY_GIGABIT) {
1181                 np->gigabit = PHY_GIGABIT;
1182                 mii_control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
1183                 mii_control_1000 &= ~ADVERTISE_1000HALF;
1184                 if (phyinterface & PHY_RGMII)
1185                         mii_control_1000 |= ADVERTISE_1000FULL;
1186                 else
1187                         mii_control_1000 &= ~ADVERTISE_1000FULL;
1188
1189                 if (mii_rw(dev, np->phyaddr, MII_CTRL1000, mii_control_1000)) {
1190                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1191                         return PHY_ERROR;
1192                 }
1193         }
1194         else
1195                 np->gigabit = 0;
1196
1197         mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1198         mii_control |= BMCR_ANENABLE;
1199
1200         /* reset the phy
1201          * (certain phys need bmcr to be setup with reset)
1202          */
1203         if (phy_reset(dev, mii_control)) {
1204                 printk(KERN_INFO "%s: phy reset failed\n", pci_name(np->pci_dev));
1205                 return PHY_ERROR;
1206         }
1207
1208         /* phy vendor specific configuration */
1209         if ((np->phy_oui == PHY_OUI_CICADA) && (phyinterface & PHY_RGMII) ) {
1210                 phy_reserved = mii_rw(dev, np->phyaddr, MII_RESV1, MII_READ);
1211                 phy_reserved &= ~(PHY_CICADA_INIT1 | PHY_CICADA_INIT2);
1212                 phy_reserved |= (PHY_CICADA_INIT3 | PHY_CICADA_INIT4);
1213                 if (mii_rw(dev, np->phyaddr, MII_RESV1, phy_reserved)) {
1214                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1215                         return PHY_ERROR;
1216                 }
1217                 phy_reserved = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1218                 phy_reserved |= PHY_CICADA_INIT5;
1219                 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, phy_reserved)) {
1220                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1221                         return PHY_ERROR;
1222                 }
1223         }
1224         if (np->phy_oui == PHY_OUI_CICADA) {
1225                 phy_reserved = mii_rw(dev, np->phyaddr, MII_SREVISION, MII_READ);
1226                 phy_reserved |= PHY_CICADA_INIT6;
1227                 if (mii_rw(dev, np->phyaddr, MII_SREVISION, phy_reserved)) {
1228                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1229                         return PHY_ERROR;
1230                 }
1231         }
1232         if (np->phy_oui == PHY_OUI_VITESSE) {
1233                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT1)) {
1234                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1235                         return PHY_ERROR;
1236                 }
1237                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT2)) {
1238                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1239                         return PHY_ERROR;
1240                 }
1241                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, MII_READ);
1242                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved)) {
1243                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1244                         return PHY_ERROR;
1245                 }
1246                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, MII_READ);
1247                 phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
1248                 phy_reserved |= PHY_VITESSE_INIT3;
1249                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved)) {
1250                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1251                         return PHY_ERROR;
1252                 }
1253                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT4)) {
1254                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1255                         return PHY_ERROR;
1256                 }
1257                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT5)) {
1258                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1259                         return PHY_ERROR;
1260                 }
1261                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, MII_READ);
1262                 phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
1263                 phy_reserved |= PHY_VITESSE_INIT3;
1264                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved)) {
1265                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1266                         return PHY_ERROR;
1267                 }
1268                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, MII_READ);
1269                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved)) {
1270                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1271                         return PHY_ERROR;
1272                 }
1273                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT6)) {
1274                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1275                         return PHY_ERROR;
1276                 }
1277                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT7)) {
1278                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1279                         return PHY_ERROR;
1280                 }
1281                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, MII_READ);
1282                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved)) {
1283                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1284                         return PHY_ERROR;
1285                 }
1286                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, MII_READ);
1287                 phy_reserved &= ~PHY_VITESSE_INIT_MSK2;
1288                 phy_reserved |= PHY_VITESSE_INIT8;
1289                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved)) {
1290                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1291                         return PHY_ERROR;
1292                 }
1293                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT9)) {
1294                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1295                         return PHY_ERROR;
1296                 }
1297                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT10)) {
1298                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1299                         return PHY_ERROR;
1300                 }
1301         }
1302         if (np->phy_oui == PHY_OUI_REALTEK) {
1303                 if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1304                     np->phy_rev == PHY_REV_REALTEK_8211B) {
1305                         /* reset could have cleared these out, set them back */
1306                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1)) {
1307                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1308                                 return PHY_ERROR;
1309                         }
1310                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, PHY_REALTEK_INIT2)) {
1311                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1312                                 return PHY_ERROR;
1313                         }
1314                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3)) {
1315                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1316                                 return PHY_ERROR;
1317                         }
1318                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG3, PHY_REALTEK_INIT4)) {
1319                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1320                                 return PHY_ERROR;
1321                         }
1322                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG4, PHY_REALTEK_INIT5)) {
1323                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1324                                 return PHY_ERROR;
1325                         }
1326                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG5, PHY_REALTEK_INIT6)) {
1327                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1328                                 return PHY_ERROR;
1329                         }
1330                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1)) {
1331                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1332                                 return PHY_ERROR;
1333                         }
1334                 }
1335                 if (np->phy_model == PHY_MODEL_REALTEK_8201) {
1336                         if (np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_32 ||
1337                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_33 ||
1338                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_34 ||
1339                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_35 ||
1340                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_36 ||
1341                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_37 ||
1342                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_38 ||
1343                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_39) {
1344                                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, MII_READ);
1345                                 phy_reserved |= PHY_REALTEK_INIT7;
1346                                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, phy_reserved)) {
1347                                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1348                                         return PHY_ERROR;
1349                                 }
1350                         }
1351                         if (phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
1352                                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3)) {
1353                                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1354                                         return PHY_ERROR;
1355                                 }
1356                                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, MII_READ);
1357                                 phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
1358                                 phy_reserved |= PHY_REALTEK_INIT3;
1359                                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, phy_reserved)) {
1360                                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1361                                         return PHY_ERROR;
1362                                 }
1363                                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1)) {
1364                                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1365                                         return PHY_ERROR;
1366                                 }
1367                         }
1368                 }
1369         }
1370
1371         /* some phys clear out pause advertisment on reset, set it back */
1372         mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg);
1373
1374         /* restart auto negotiation */
1375         mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1376         mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
1377         if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control)) {
1378                 return PHY_ERROR;
1379         }
1380
1381         return 0;
1382 }
1383
1384 static void nv_start_rx(struct net_device *dev)
1385 {
1386         struct fe_priv *np = netdev_priv(dev);
1387         u8 __iomem *base = get_hwbase(dev);
1388         u32 rx_ctrl = readl(base + NvRegReceiverControl);
1389
1390         dprintk(KERN_DEBUG "%s: nv_start_rx\n", dev->name);
1391         /* Already running? Stop it. */
1392         if ((readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) && !np->mac_in_use) {
1393                 rx_ctrl &= ~NVREG_RCVCTL_START;
1394                 writel(rx_ctrl, base + NvRegReceiverControl);
1395                 pci_push(base);
1396         }
1397         writel(np->linkspeed, base + NvRegLinkSpeed);
1398         pci_push(base);
1399         rx_ctrl |= NVREG_RCVCTL_START;
1400         if (np->mac_in_use)
1401                 rx_ctrl &= ~NVREG_RCVCTL_RX_PATH_EN;
1402         writel(rx_ctrl, base + NvRegReceiverControl);
1403         dprintk(KERN_DEBUG "%s: nv_start_rx to duplex %d, speed 0x%08x.\n",
1404                                 dev->name, np->duplex, np->linkspeed);
1405         pci_push(base);
1406 }
1407
1408 static void nv_stop_rx(struct net_device *dev)
1409 {
1410         struct fe_priv *np = netdev_priv(dev);
1411         u8 __iomem *base = get_hwbase(dev);
1412         u32 rx_ctrl = readl(base + NvRegReceiverControl);
1413
1414         dprintk(KERN_DEBUG "%s: nv_stop_rx\n", dev->name);
1415         if (!np->mac_in_use)
1416                 rx_ctrl &= ~NVREG_RCVCTL_START;
1417         else
1418                 rx_ctrl |= NVREG_RCVCTL_RX_PATH_EN;
1419         writel(rx_ctrl, base + NvRegReceiverControl);
1420         reg_delay(dev, NvRegReceiverStatus, NVREG_RCVSTAT_BUSY, 0,
1421                         NV_RXSTOP_DELAY1, NV_RXSTOP_DELAY1MAX,
1422                         KERN_INFO "nv_stop_rx: ReceiverStatus remained busy");
1423
1424         udelay(NV_RXSTOP_DELAY2);
1425         if (!np->mac_in_use)
1426                 writel(0, base + NvRegLinkSpeed);
1427 }
1428
1429 static void nv_start_tx(struct net_device *dev)
1430 {
1431         struct fe_priv *np = netdev_priv(dev);
1432         u8 __iomem *base = get_hwbase(dev);
1433         u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1434
1435         dprintk(KERN_DEBUG "%s: nv_start_tx\n", dev->name);
1436         tx_ctrl |= NVREG_XMITCTL_START;
1437         if (np->mac_in_use)
1438                 tx_ctrl &= ~NVREG_XMITCTL_TX_PATH_EN;
1439         writel(tx_ctrl, base + NvRegTransmitterControl);
1440         pci_push(base);
1441 }
1442
1443 static void nv_stop_tx(struct net_device *dev)
1444 {
1445         struct fe_priv *np = netdev_priv(dev);
1446         u8 __iomem *base = get_hwbase(dev);
1447         u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1448
1449         dprintk(KERN_DEBUG "%s: nv_stop_tx\n", dev->name);
1450         if (!np->mac_in_use)
1451                 tx_ctrl &= ~NVREG_XMITCTL_START;
1452         else
1453                 tx_ctrl |= NVREG_XMITCTL_TX_PATH_EN;
1454         writel(tx_ctrl, base + NvRegTransmitterControl);
1455         reg_delay(dev, NvRegTransmitterStatus, NVREG_XMITSTAT_BUSY, 0,
1456                         NV_TXSTOP_DELAY1, NV_TXSTOP_DELAY1MAX,
1457                         KERN_INFO "nv_stop_tx: TransmitterStatus remained busy");
1458
1459         udelay(NV_TXSTOP_DELAY2);
1460         if (!np->mac_in_use)
1461                 writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV,
1462                        base + NvRegTransmitPoll);
1463 }
1464
1465 static void nv_start_rxtx(struct net_device *dev)
1466 {
1467         nv_start_rx(dev);
1468         nv_start_tx(dev);
1469 }
1470
1471 static void nv_stop_rxtx(struct net_device *dev)
1472 {
1473         nv_stop_rx(dev);
1474         nv_stop_tx(dev);
1475 }
1476
1477 static void nv_txrx_reset(struct net_device *dev)
1478 {
1479         struct fe_priv *np = netdev_priv(dev);
1480         u8 __iomem *base = get_hwbase(dev);
1481
1482         dprintk(KERN_DEBUG "%s: nv_txrx_reset\n", dev->name);
1483         writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1484         pci_push(base);
1485         udelay(NV_TXRX_RESET_DELAY);
1486         writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1487         pci_push(base);
1488 }
1489
1490 static void nv_mac_reset(struct net_device *dev)
1491 {
1492         struct fe_priv *np = netdev_priv(dev);
1493         u8 __iomem *base = get_hwbase(dev);
1494         u32 temp1, temp2, temp3;
1495
1496         dprintk(KERN_DEBUG "%s: nv_mac_reset\n", dev->name);
1497
1498         writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1499         pci_push(base);
1500
1501         /* save registers since they will be cleared on reset */
1502         temp1 = readl(base + NvRegMacAddrA);
1503         temp2 = readl(base + NvRegMacAddrB);
1504         temp3 = readl(base + NvRegTransmitPoll);
1505
1506         writel(NVREG_MAC_RESET_ASSERT, base + NvRegMacReset);
1507         pci_push(base);
1508         udelay(NV_MAC_RESET_DELAY);
1509         writel(0, base + NvRegMacReset);
1510         pci_push(base);
1511         udelay(NV_MAC_RESET_DELAY);
1512
1513         /* restore saved registers */
1514         writel(temp1, base + NvRegMacAddrA);
1515         writel(temp2, base + NvRegMacAddrB);
1516         writel(temp3, base + NvRegTransmitPoll);
1517
1518         writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1519         pci_push(base);
1520 }
1521
1522 static void nv_get_hw_stats(struct net_device *dev)
1523 {
1524         struct fe_priv *np = netdev_priv(dev);
1525         u8 __iomem *base = get_hwbase(dev);
1526
1527         np->estats.tx_bytes += readl(base + NvRegTxCnt);
1528         np->estats.tx_zero_rexmt += readl(base + NvRegTxZeroReXmt);
1529         np->estats.tx_one_rexmt += readl(base + NvRegTxOneReXmt);
1530         np->estats.tx_many_rexmt += readl(base + NvRegTxManyReXmt);
1531         np->estats.tx_late_collision += readl(base + NvRegTxLateCol);
1532         np->estats.tx_fifo_errors += readl(base + NvRegTxUnderflow);
1533         np->estats.tx_carrier_errors += readl(base + NvRegTxLossCarrier);
1534         np->estats.tx_excess_deferral += readl(base + NvRegTxExcessDef);
1535         np->estats.tx_retry_error += readl(base + NvRegTxRetryErr);
1536         np->estats.rx_frame_error += readl(base + NvRegRxFrameErr);
1537         np->estats.rx_extra_byte += readl(base + NvRegRxExtraByte);
1538         np->estats.rx_late_collision += readl(base + NvRegRxLateCol);
1539         np->estats.rx_runt += readl(base + NvRegRxRunt);
1540         np->estats.rx_frame_too_long += readl(base + NvRegRxFrameTooLong);
1541         np->estats.rx_over_errors += readl(base + NvRegRxOverflow);
1542         np->estats.rx_crc_errors += readl(base + NvRegRxFCSErr);
1543         np->estats.rx_frame_align_error += readl(base + NvRegRxFrameAlignErr);
1544         np->estats.rx_length_error += readl(base + NvRegRxLenErr);
1545         np->estats.rx_unicast += readl(base + NvRegRxUnicast);
1546         np->estats.rx_multicast += readl(base + NvRegRxMulticast);
1547         np->estats.rx_broadcast += readl(base + NvRegRxBroadcast);
1548         np->estats.rx_packets =
1549                 np->estats.rx_unicast +
1550                 np->estats.rx_multicast +
1551                 np->estats.rx_broadcast;
1552         np->estats.rx_errors_total =
1553                 np->estats.rx_crc_errors +
1554                 np->estats.rx_over_errors +
1555                 np->estats.rx_frame_error +
1556                 (np->estats.rx_frame_align_error - np->estats.rx_extra_byte) +
1557                 np->estats.rx_late_collision +
1558                 np->estats.rx_runt +
1559                 np->estats.rx_frame_too_long;
1560         np->estats.tx_errors_total =
1561                 np->estats.tx_late_collision +
1562                 np->estats.tx_fifo_errors +
1563                 np->estats.tx_carrier_errors +
1564                 np->estats.tx_excess_deferral +
1565                 np->estats.tx_retry_error;
1566
1567         if (np->driver_data & DEV_HAS_STATISTICS_V2) {
1568                 np->estats.tx_deferral += readl(base + NvRegTxDef);
1569                 np->estats.tx_packets += readl(base + NvRegTxFrame);
1570                 np->estats.rx_bytes += readl(base + NvRegRxCnt);
1571                 np->estats.tx_pause += readl(base + NvRegTxPause);
1572                 np->estats.rx_pause += readl(base + NvRegRxPause);
1573                 np->estats.rx_drop_frame += readl(base + NvRegRxDropFrame);
1574         }
1575 }
1576
1577 /*
1578  * nv_get_stats: dev->get_stats function
1579  * Get latest stats value from the nic.
1580  * Called with read_lock(&dev_base_lock) held for read -
1581  * only synchronized against unregister_netdevice.
1582  */
1583 static struct net_device_stats *nv_get_stats(struct net_device *dev)
1584 {
1585         struct fe_priv *np = netdev_priv(dev);
1586
1587         /* If the nic supports hw counters then retrieve latest values */
1588         if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2)) {
1589                 nv_get_hw_stats(dev);
1590
1591                 /* copy to net_device stats */
1592                 dev->stats.tx_bytes = np->estats.tx_bytes;
1593                 dev->stats.tx_fifo_errors = np->estats.tx_fifo_errors;
1594                 dev->stats.tx_carrier_errors = np->estats.tx_carrier_errors;
1595                 dev->stats.rx_crc_errors = np->estats.rx_crc_errors;
1596                 dev->stats.rx_over_errors = np->estats.rx_over_errors;
1597                 dev->stats.rx_errors = np->estats.rx_errors_total;
1598                 dev->stats.tx_errors = np->estats.tx_errors_total;
1599         }
1600
1601         return &dev->stats;
1602 }
1603
1604 /*
1605  * nv_alloc_rx: fill rx ring entries.
1606  * Return 1 if the allocations for the skbs failed and the
1607  * rx engine is without Available descriptors
1608  */
1609 static int nv_alloc_rx(struct net_device *dev)
1610 {
1611         struct fe_priv *np = netdev_priv(dev);
1612         struct ring_desc* less_rx;
1613
1614         less_rx = np->get_rx.orig;
1615         if (less_rx-- == np->first_rx.orig)
1616                 less_rx = np->last_rx.orig;
1617
1618         while (np->put_rx.orig != less_rx) {
1619                 struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
1620                 if (skb) {
1621                         np->put_rx_ctx->skb = skb;
1622                         np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
1623                                                              skb->data,
1624                                                              skb_tailroom(skb),
1625                                                              PCI_DMA_FROMDEVICE);
1626                         np->put_rx_ctx->dma_len = skb_tailroom(skb);
1627                         np->put_rx.orig->buf = cpu_to_le32(np->put_rx_ctx->dma);
1628                         wmb();
1629                         np->put_rx.orig->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
1630                         if (unlikely(np->put_rx.orig++ == np->last_rx.orig))
1631                                 np->put_rx.orig = np->first_rx.orig;
1632                         if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1633                                 np->put_rx_ctx = np->first_rx_ctx;
1634                 } else {
1635                         return 1;
1636                 }
1637         }
1638         return 0;
1639 }
1640
1641 static int nv_alloc_rx_optimized(struct net_device *dev)
1642 {
1643         struct fe_priv *np = netdev_priv(dev);
1644         struct ring_desc_ex* less_rx;
1645
1646         less_rx = np->get_rx.ex;
1647         if (less_rx-- == np->first_rx.ex)
1648                 less_rx = np->last_rx.ex;
1649
1650         while (np->put_rx.ex != less_rx) {
1651                 struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
1652                 if (skb) {
1653                         np->put_rx_ctx->skb = skb;
1654                         np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
1655                                                              skb->data,
1656                                                              skb_tailroom(skb),
1657                                                              PCI_DMA_FROMDEVICE);
1658                         np->put_rx_ctx->dma_len = skb_tailroom(skb);
1659                         np->put_rx.ex->bufhigh = cpu_to_le32(dma_high(np->put_rx_ctx->dma));
1660                         np->put_rx.ex->buflow = cpu_to_le32(dma_low(np->put_rx_ctx->dma));
1661                         wmb();
1662                         np->put_rx.ex->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
1663                         if (unlikely(np->put_rx.ex++ == np->last_rx.ex))
1664                                 np->put_rx.ex = np->first_rx.ex;
1665                         if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1666                                 np->put_rx_ctx = np->first_rx_ctx;
1667                 } else {
1668                         return 1;
1669                 }
1670         }
1671         return 0;
1672 }
1673
1674 /* If rx bufs are exhausted called after 50ms to attempt to refresh */
1675 #ifdef CONFIG_FORCEDETH_NAPI
1676 static void nv_do_rx_refill(unsigned long data)
1677 {
1678         struct net_device *dev = (struct net_device *) data;
1679         struct fe_priv *np = netdev_priv(dev);
1680
1681         /* Just reschedule NAPI rx processing */
1682         netif_rx_schedule(dev, &np->napi);
1683 }
1684 #else
1685 static void nv_do_rx_refill(unsigned long data)
1686 {
1687         struct net_device *dev = (struct net_device *) data;
1688         struct fe_priv *np = netdev_priv(dev);
1689         int retcode;
1690
1691         if (!using_multi_irqs(dev)) {
1692                 if (np->msi_flags & NV_MSI_X_ENABLED)
1693                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1694                 else
1695                         disable_irq(np->pci_dev->irq);
1696         } else {
1697                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1698         }
1699         if (!nv_optimized(np))
1700                 retcode = nv_alloc_rx(dev);
1701         else
1702                 retcode = nv_alloc_rx_optimized(dev);
1703         if (retcode) {
1704                 spin_lock_irq(&np->lock);
1705                 if (!np->in_shutdown)
1706                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
1707                 spin_unlock_irq(&np->lock);
1708         }
1709         if (!using_multi_irqs(dev)) {
1710                 if (np->msi_flags & NV_MSI_X_ENABLED)
1711                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1712                 else
1713                         enable_irq(np->pci_dev->irq);
1714         } else {
1715                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1716         }
1717 }
1718 #endif
1719
1720 static void nv_init_rx(struct net_device *dev)
1721 {
1722         struct fe_priv *np = netdev_priv(dev);
1723         int i;
1724
1725         np->get_rx = np->put_rx = np->first_rx = np->rx_ring;
1726
1727         if (!nv_optimized(np))
1728                 np->last_rx.orig = &np->rx_ring.orig[np->rx_ring_size-1];
1729         else
1730                 np->last_rx.ex = &np->rx_ring.ex[np->rx_ring_size-1];
1731         np->get_rx_ctx = np->put_rx_ctx = np->first_rx_ctx = np->rx_skb;
1732         np->last_rx_ctx = &np->rx_skb[np->rx_ring_size-1];
1733
1734         for (i = 0; i < np->rx_ring_size; i++) {
1735                 if (!nv_optimized(np)) {
1736                         np->rx_ring.orig[i].flaglen = 0;
1737                         np->rx_ring.orig[i].buf = 0;
1738                 } else {
1739                         np->rx_ring.ex[i].flaglen = 0;
1740                         np->rx_ring.ex[i].txvlan = 0;
1741                         np->rx_ring.ex[i].bufhigh = 0;
1742                         np->rx_ring.ex[i].buflow = 0;
1743                 }
1744                 np->rx_skb[i].skb = NULL;
1745                 np->rx_skb[i].dma = 0;
1746         }
1747 }
1748
1749 static void nv_init_tx(struct net_device *dev)
1750 {
1751         struct fe_priv *np = netdev_priv(dev);
1752         int i;
1753
1754         np->get_tx = np->put_tx = np->first_tx = np->tx_ring;
1755
1756         if (!nv_optimized(np))
1757                 np->last_tx.orig = &np->tx_ring.orig[np->tx_ring_size-1];
1758         else
1759                 np->last_tx.ex = &np->tx_ring.ex[np->tx_ring_size-1];
1760         np->get_tx_ctx = np->put_tx_ctx = np->first_tx_ctx = np->tx_skb;
1761         np->last_tx_ctx = &np->tx_skb[np->tx_ring_size-1];
1762         np->tx_pkts_in_progress = 0;
1763         np->tx_change_owner = NULL;
1764         np->tx_end_flip = NULL;
1765
1766         for (i = 0; i < np->tx_ring_size; i++) {
1767                 if (!nv_optimized(np)) {
1768                         np->tx_ring.orig[i].flaglen = 0;
1769                         np->tx_ring.orig[i].buf = 0;
1770                 } else {
1771                         np->tx_ring.ex[i].flaglen = 0;
1772                         np->tx_ring.ex[i].txvlan = 0;
1773                         np->tx_ring.ex[i].bufhigh = 0;
1774                         np->tx_ring.ex[i].buflow = 0;
1775                 }
1776                 np->tx_skb[i].skb = NULL;
1777                 np->tx_skb[i].dma = 0;
1778                 np->tx_skb[i].dma_len = 0;
1779                 np->tx_skb[i].first_tx_desc = NULL;
1780                 np->tx_skb[i].next_tx_ctx = NULL;
1781         }
1782 }
1783
1784 static int nv_init_ring(struct net_device *dev)
1785 {
1786         struct fe_priv *np = netdev_priv(dev);
1787
1788         nv_init_tx(dev);
1789         nv_init_rx(dev);
1790
1791         if (!nv_optimized(np))
1792                 return nv_alloc_rx(dev);
1793         else
1794                 return nv_alloc_rx_optimized(dev);
1795 }
1796
1797 static int nv_release_txskb(struct net_device *dev, struct nv_skb_map* tx_skb)
1798 {
1799         struct fe_priv *np = netdev_priv(dev);
1800
1801         if (tx_skb->dma) {
1802                 pci_unmap_page(np->pci_dev, tx_skb->dma,
1803                                tx_skb->dma_len,
1804                                PCI_DMA_TODEVICE);
1805                 tx_skb->dma = 0;
1806         }
1807         if (tx_skb->skb) {
1808                 dev_kfree_skb_any(tx_skb->skb);
1809                 tx_skb->skb = NULL;
1810                 return 1;
1811         } else {
1812                 return 0;
1813         }
1814 }
1815
1816 static void nv_drain_tx(struct net_device *dev)
1817 {
1818         struct fe_priv *np = netdev_priv(dev);
1819         unsigned int i;
1820
1821         for (i = 0; i < np->tx_ring_size; i++) {
1822                 if (!nv_optimized(np)) {
1823                         np->tx_ring.orig[i].flaglen = 0;
1824                         np->tx_ring.orig[i].buf = 0;
1825                 } else {
1826                         np->tx_ring.ex[i].flaglen = 0;
1827                         np->tx_ring.ex[i].txvlan = 0;
1828                         np->tx_ring.ex[i].bufhigh = 0;
1829                         np->tx_ring.ex[i].buflow = 0;
1830                 }
1831                 if (nv_release_txskb(dev, &np->tx_skb[i]))
1832                         dev->stats.tx_dropped++;
1833                 np->tx_skb[i].dma = 0;
1834                 np->tx_skb[i].dma_len = 0;
1835                 np->tx_skb[i].first_tx_desc = NULL;
1836                 np->tx_skb[i].next_tx_ctx = NULL;
1837         }
1838         np->tx_pkts_in_progress = 0;
1839         np->tx_change_owner = NULL;
1840         np->tx_end_flip = NULL;
1841 }
1842
1843 static void nv_drain_rx(struct net_device *dev)
1844 {
1845         struct fe_priv *np = netdev_priv(dev);
1846         int i;
1847
1848         for (i = 0; i < np->rx_ring_size; i++) {
1849                 if (!nv_optimized(np)) {
1850                         np->rx_ring.orig[i].flaglen = 0;
1851                         np->rx_ring.orig[i].buf = 0;
1852                 } else {
1853                         np->rx_ring.ex[i].flaglen = 0;
1854                         np->rx_ring.ex[i].txvlan = 0;
1855                         np->rx_ring.ex[i].bufhigh = 0;
1856                         np->rx_ring.ex[i].buflow = 0;
1857                 }
1858                 wmb();
1859                 if (np->rx_skb[i].skb) {
1860                         pci_unmap_single(np->pci_dev, np->rx_skb[i].dma,
1861                                          (skb_end_pointer(np->rx_skb[i].skb) -
1862                                           np->rx_skb[i].skb->data),
1863                                          PCI_DMA_FROMDEVICE);
1864                         dev_kfree_skb(np->rx_skb[i].skb);
1865                         np->rx_skb[i].skb = NULL;
1866                 }
1867         }
1868 }
1869
1870 static void nv_drain_rxtx(struct net_device *dev)
1871 {
1872         nv_drain_tx(dev);
1873         nv_drain_rx(dev);
1874 }
1875
1876 static inline u32 nv_get_empty_tx_slots(struct fe_priv *np)
1877 {
1878         return (u32)(np->tx_ring_size - ((np->tx_ring_size + (np->put_tx_ctx - np->get_tx_ctx)) % np->tx_ring_size));
1879 }
1880
1881 static void nv_legacybackoff_reseed(struct net_device *dev)
1882 {
1883         u8 __iomem *base = get_hwbase(dev);
1884         u32 reg;
1885         u32 low;
1886         int tx_status = 0;
1887
1888         reg = readl(base + NvRegSlotTime) & ~NVREG_SLOTTIME_MASK;
1889         get_random_bytes(&low, sizeof(low));
1890         reg |= low & NVREG_SLOTTIME_MASK;
1891
1892         /* Need to stop tx before change takes effect.
1893          * Caller has already gained np->lock.
1894          */
1895         tx_status = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START;
1896         if (tx_status)
1897                 nv_stop_tx(dev);
1898         nv_stop_rx(dev);
1899         writel(reg, base + NvRegSlotTime);
1900         if (tx_status)
1901                 nv_start_tx(dev);
1902         nv_start_rx(dev);
1903 }
1904
1905 /* Gear Backoff Seeds */
1906 #define BACKOFF_SEEDSET_ROWS    8
1907 #define BACKOFF_SEEDSET_LFSRS   15
1908
1909 /* Known Good seed sets */
1910 static const u32 main_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
1911     {145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
1912     {245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 385, 761, 790, 974},
1913     {145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
1914     {245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 386, 761, 790, 974},
1915     {266, 265, 276, 585, 397, 208, 345, 355, 365, 376, 385, 396, 771, 700, 984},
1916     {266, 265, 276, 586, 397, 208, 346, 355, 365, 376, 285, 396, 771, 700, 984},
1917     {366, 365, 376, 686, 497, 308, 447, 455, 466, 476, 485, 496, 871, 800,  84},
1918     {466, 465, 476, 786, 597, 408, 547, 555, 566, 576, 585, 597, 971, 900, 184}};
1919
1920 static const u32 gear_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
1921     {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375,  30, 295},
1922     {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
1923     {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 397},
1924     {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375,  30, 295},
1925     {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375,  30, 295},
1926     {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
1927     {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
1928     {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395}};
1929
1930 static void nv_gear_backoff_reseed(struct net_device *dev)
1931 {
1932         u8 __iomem *base = get_hwbase(dev);
1933         u32 miniseed1, miniseed2, miniseed2_reversed, miniseed3, miniseed3_reversed;
1934         u32 temp, seedset, combinedSeed;
1935         int i;
1936
1937         /* Setup seed for free running LFSR */
1938         /* We are going to read the time stamp counter 3 times
1939            and swizzle bits around to increase randomness */
1940         get_random_bytes(&miniseed1, sizeof(miniseed1));
1941         miniseed1 &= 0x0fff;
1942         if (miniseed1 == 0)
1943                 miniseed1 = 0xabc;
1944
1945         get_random_bytes(&miniseed2, sizeof(miniseed2));
1946         miniseed2 &= 0x0fff;
1947         if (miniseed2 == 0)
1948                 miniseed2 = 0xabc;
1949         miniseed2_reversed =
1950                 ((miniseed2 & 0xF00) >> 8) |
1951                  (miniseed2 & 0x0F0) |
1952                  ((miniseed2 & 0x00F) << 8);
1953
1954         get_random_bytes(&miniseed3, sizeof(miniseed3));
1955         miniseed3 &= 0x0fff;
1956         if (miniseed3 == 0)
1957                 miniseed3 = 0xabc;
1958         miniseed3_reversed =
1959                 ((miniseed3 & 0xF00) >> 8) |
1960                  (miniseed3 & 0x0F0) |
1961                  ((miniseed3 & 0x00F) << 8);
1962
1963         combinedSeed = ((miniseed1 ^ miniseed2_reversed) << 12) |
1964                        (miniseed2 ^ miniseed3_reversed);
1965
1966         /* Seeds can not be zero */
1967         if ((combinedSeed & NVREG_BKOFFCTRL_SEED_MASK) == 0)
1968                 combinedSeed |= 0x08;
1969         if ((combinedSeed & (NVREG_BKOFFCTRL_SEED_MASK << NVREG_BKOFFCTRL_GEAR)) == 0)
1970                 combinedSeed |= 0x8000;
1971
1972         /* No need to disable tx here */
1973         temp = NVREG_BKOFFCTRL_DEFAULT | (0 << NVREG_BKOFFCTRL_SELECT);
1974         temp |= combinedSeed & NVREG_BKOFFCTRL_SEED_MASK;
1975         temp |= combinedSeed >> NVREG_BKOFFCTRL_GEAR;
1976         writel(temp,base + NvRegBackOffControl);
1977
1978         /* Setup seeds for all gear LFSRs. */
1979         get_random_bytes(&seedset, sizeof(seedset));
1980         seedset = seedset % BACKOFF_SEEDSET_ROWS;
1981         for (i = 1; i <= BACKOFF_SEEDSET_LFSRS; i++)
1982         {
1983                 temp = NVREG_BKOFFCTRL_DEFAULT | (i << NVREG_BKOFFCTRL_SELECT);
1984                 temp |= main_seedset[seedset][i-1] & 0x3ff;
1985                 temp |= ((gear_seedset[seedset][i-1] & 0x3ff) << NVREG_BKOFFCTRL_GEAR);
1986                 writel(temp, base + NvRegBackOffControl);
1987         }
1988 }
1989
1990 /*
1991  * nv_start_xmit: dev->hard_start_xmit function
1992  * Called with netif_tx_lock held.
1993  */
1994 static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
1995 {
1996         struct fe_priv *np = netdev_priv(dev);
1997         u32 tx_flags = 0;
1998         u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
1999         unsigned int fragments = skb_shinfo(skb)->nr_frags;
2000         unsigned int i;
2001         u32 offset = 0;
2002         u32 bcnt;
2003         u32 size = skb->len-skb->data_len;
2004         u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2005         u32 empty_slots;
2006         struct ring_desc* put_tx;
2007         struct ring_desc* start_tx;
2008         struct ring_desc* prev_tx;
2009         struct nv_skb_map* prev_tx_ctx;
2010         unsigned long flags;
2011
2012         /* add fragments to entries count */
2013         for (i = 0; i < fragments; i++) {
2014                 entries += (skb_shinfo(skb)->frags[i].size >> NV_TX2_TSO_MAX_SHIFT) +
2015                            ((skb_shinfo(skb)->frags[i].size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2016         }
2017
2018         empty_slots = nv_get_empty_tx_slots(np);
2019         if (unlikely(empty_slots <= entries)) {
2020                 spin_lock_irqsave(&np->lock, flags);
2021                 netif_stop_queue(dev);
2022                 np->tx_stop = 1;
2023                 spin_unlock_irqrestore(&np->lock, flags);
2024                 return NETDEV_TX_BUSY;
2025         }
2026
2027         start_tx = put_tx = np->put_tx.orig;
2028
2029         /* setup the header buffer */
2030         do {
2031                 prev_tx = put_tx;
2032                 prev_tx_ctx = np->put_tx_ctx;
2033                 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2034                 np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
2035                                                 PCI_DMA_TODEVICE);
2036                 np->put_tx_ctx->dma_len = bcnt;
2037                 put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
2038                 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2039
2040                 tx_flags = np->tx_flags;
2041                 offset += bcnt;
2042                 size -= bcnt;
2043                 if (unlikely(put_tx++ == np->last_tx.orig))
2044                         put_tx = np->first_tx.orig;
2045                 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2046                         np->put_tx_ctx = np->first_tx_ctx;
2047         } while (size);
2048
2049         /* setup the fragments */
2050         for (i = 0; i < fragments; i++) {
2051                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2052                 u32 size = frag->size;
2053                 offset = 0;
2054
2055                 do {
2056                         prev_tx = put_tx;
2057                         prev_tx_ctx = np->put_tx_ctx;
2058                         bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2059                         np->put_tx_ctx->dma = pci_map_page(np->pci_dev, frag->page, frag->page_offset+offset, bcnt,
2060                                                            PCI_DMA_TODEVICE);
2061                         np->put_tx_ctx->dma_len = bcnt;
2062                         put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
2063                         put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2064
2065                         offset += bcnt;
2066                         size -= bcnt;
2067                         if (unlikely(put_tx++ == np->last_tx.orig))
2068                                 put_tx = np->first_tx.orig;
2069                         if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2070                                 np->put_tx_ctx = np->first_tx_ctx;
2071                 } while (size);
2072         }
2073
2074         /* set last fragment flag  */
2075         prev_tx->flaglen |= cpu_to_le32(tx_flags_extra);
2076
2077         /* save skb in this slot's context area */
2078         prev_tx_ctx->skb = skb;
2079
2080         if (skb_is_gso(skb))
2081                 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
2082         else
2083                 tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
2084                          NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
2085
2086         spin_lock_irqsave(&np->lock, flags);
2087
2088         /* set tx flags */
2089         start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
2090         np->put_tx.orig = put_tx;
2091
2092         spin_unlock_irqrestore(&np->lock, flags);
2093
2094         dprintk(KERN_DEBUG "%s: nv_start_xmit: entries %d queued for transmission. tx_flags_extra: %x\n",
2095                 dev->name, entries, tx_flags_extra);
2096         {
2097                 int j;
2098                 for (j=0; j<64; j++) {
2099                         if ((j%16) == 0)
2100                                 dprintk("\n%03x:", j);
2101                         dprintk(" %02x", ((unsigned char*)skb->data)[j]);
2102                 }
2103                 dprintk("\n");
2104         }
2105
2106         dev->trans_start = jiffies;
2107         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2108         return NETDEV_TX_OK;
2109 }
2110
2111 static int nv_start_xmit_optimized(struct sk_buff *skb, struct net_device *dev)
2112 {
2113         struct fe_priv *np = netdev_priv(dev);
2114         u32 tx_flags = 0;
2115         u32 tx_flags_extra;
2116         unsigned int fragments = skb_shinfo(skb)->nr_frags;
2117         unsigned int i;
2118         u32 offset = 0;
2119         u32 bcnt;
2120         u32 size = skb->len-skb->data_len;
2121         u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2122         u32 empty_slots;
2123         struct ring_desc_ex* put_tx;
2124         struct ring_desc_ex* start_tx;
2125         struct ring_desc_ex* prev_tx;
2126         struct nv_skb_map* prev_tx_ctx;
2127         struct nv_skb_map* start_tx_ctx;
2128         unsigned long flags;
2129
2130         /* add fragments to entries count */
2131         for (i = 0; i < fragments; i++) {
2132                 entries += (skb_shinfo(skb)->frags[i].size >> NV_TX2_TSO_MAX_SHIFT) +
2133                            ((skb_shinfo(skb)->frags[i].size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2134         }
2135
2136         empty_slots = nv_get_empty_tx_slots(np);
2137         if (unlikely(empty_slots <= entries)) {
2138                 spin_lock_irqsave(&np->lock, flags);
2139                 netif_stop_queue(dev);
2140                 np->tx_stop = 1;
2141                 spin_unlock_irqrestore(&np->lock, flags);
2142                 return NETDEV_TX_BUSY;
2143         }
2144
2145         start_tx = put_tx = np->put_tx.ex;
2146         start_tx_ctx = np->put_tx_ctx;
2147
2148         /* setup the header buffer */
2149         do {
2150                 prev_tx = put_tx;
2151                 prev_tx_ctx = np->put_tx_ctx;
2152                 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2153                 np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
2154                                                 PCI_DMA_TODEVICE);
2155                 np->put_tx_ctx->dma_len = bcnt;
2156                 put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
2157                 put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
2158                 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2159
2160                 tx_flags = NV_TX2_VALID;
2161                 offset += bcnt;
2162                 size -= bcnt;
2163                 if (unlikely(put_tx++ == np->last_tx.ex))
2164                         put_tx = np->first_tx.ex;
2165                 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2166                         np->put_tx_ctx = np->first_tx_ctx;
2167         } while (size);
2168
2169         /* setup the fragments */
2170         for (i = 0; i < fragments; i++) {
2171                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2172                 u32 size = frag->size;
2173                 offset = 0;
2174
2175                 do {
2176                         prev_tx = put_tx;
2177                         prev_tx_ctx = np->put_tx_ctx;
2178                         bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2179                         np->put_tx_ctx->dma = pci_map_page(np->pci_dev, frag->page, frag->page_offset+offset, bcnt,
2180                                                            PCI_DMA_TODEVICE);
2181                         np->put_tx_ctx->dma_len = bcnt;
2182                         put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
2183                         put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
2184                         put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2185
2186                         offset += bcnt;
2187                         size -= bcnt;
2188                         if (unlikely(put_tx++ == np->last_tx.ex))
2189                                 put_tx = np->first_tx.ex;
2190                         if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2191                                 np->put_tx_ctx = np->first_tx_ctx;
2192                 } while (size);
2193         }
2194
2195         /* set last fragment flag  */
2196         prev_tx->flaglen |= cpu_to_le32(NV_TX2_LASTPACKET);
2197
2198         /* save skb in this slot's context area */
2199         prev_tx_ctx->skb = skb;
2200
2201         if (skb_is_gso(skb))
2202                 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
2203         else
2204                 tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
2205                          NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
2206
2207         /* vlan tag */
2208         if (likely(!np->vlangrp)) {
2209                 start_tx->txvlan = 0;
2210         } else {
2211                 if (vlan_tx_tag_present(skb))
2212                         start_tx->txvlan = cpu_to_le32(NV_TX3_VLAN_TAG_PRESENT | vlan_tx_tag_get(skb));
2213                 else
2214                         start_tx->txvlan = 0;
2215         }
2216
2217         spin_lock_irqsave(&np->lock, flags);
2218
2219         if (np->tx_limit) {
2220                 /* Limit the number of outstanding tx. Setup all fragments, but
2221                  * do not set the VALID bit on the first descriptor. Save a pointer
2222                  * to that descriptor and also for next skb_map element.
2223                  */
2224
2225                 if (np->tx_pkts_in_progress == NV_TX_LIMIT_COUNT) {
2226                         if (!np->tx_change_owner)
2227                                 np->tx_change_owner = start_tx_ctx;
2228
2229                         /* remove VALID bit */
2230                         tx_flags &= ~NV_TX2_VALID;
2231                         start_tx_ctx->first_tx_desc = start_tx;
2232                         start_tx_ctx->next_tx_ctx = np->put_tx_ctx;
2233                         np->tx_end_flip = np->put_tx_ctx;
2234                 } else {
2235                         np->tx_pkts_in_progress++;
2236                 }
2237         }
2238
2239         /* set tx flags */
2240         start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
2241         np->put_tx.ex = put_tx;
2242
2243         spin_unlock_irqrestore(&np->lock, flags);
2244
2245         dprintk(KERN_DEBUG "%s: nv_start_xmit_optimized: entries %d queued for transmission. tx_flags_extra: %x\n",
2246                 dev->name, entries, tx_flags_extra);
2247         {
2248                 int j;
2249                 for (j=0; j<64; j++) {
2250                         if ((j%16) == 0)
2251                                 dprintk("\n%03x:", j);
2252                         dprintk(" %02x", ((unsigned char*)skb->data)[j]);
2253                 }
2254                 dprintk("\n");
2255         }
2256
2257         dev->trans_start = jiffies;
2258         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2259         return NETDEV_TX_OK;
2260 }
2261
2262 static inline void nv_tx_flip_ownership(struct net_device *dev)
2263 {
2264         struct fe_priv *np = netdev_priv(dev);
2265
2266         np->tx_pkts_in_progress--;
2267         if (np->tx_change_owner) {
2268                 np->tx_change_owner->first_tx_desc->flaglen |=
2269                         cpu_to_le32(NV_TX2_VALID);
2270                 np->tx_pkts_in_progress++;
2271
2272                 np->tx_change_owner = np->tx_change_owner->next_tx_ctx;
2273                 if (np->tx_change_owner == np->tx_end_flip)
2274                         np->tx_change_owner = NULL;
2275
2276                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2277         }
2278 }
2279
2280 /*
2281  * nv_tx_done: check for completed packets, release the skbs.
2282  *
2283  * Caller must own np->lock.
2284  */
2285 static void nv_tx_done(struct net_device *dev)
2286 {
2287         struct fe_priv *np = netdev_priv(dev);
2288         u32 flags;
2289         struct ring_desc* orig_get_tx = np->get_tx.orig;
2290
2291         while ((np->get_tx.orig != np->put_tx.orig) &&
2292                !((flags = le32_to_cpu(np->get_tx.orig->flaglen)) & NV_TX_VALID)) {
2293
2294                 dprintk(KERN_DEBUG "%s: nv_tx_done: flags 0x%x.\n",
2295                                         dev->name, flags);
2296
2297                 pci_unmap_page(np->pci_dev, np->get_tx_ctx->dma,
2298                                np->get_tx_ctx->dma_len,
2299                                PCI_DMA_TODEVICE);
2300                 np->get_tx_ctx->dma = 0;
2301
2302                 if (np->desc_ver == DESC_VER_1) {
2303                         if (flags & NV_TX_LASTPACKET) {
2304                                 if (flags & NV_TX_ERROR) {
2305                                         if (flags & NV_TX_UNDERFLOW)
2306                                                 dev->stats.tx_fifo_errors++;
2307                                         if (flags & NV_TX_CARRIERLOST)
2308                                                 dev->stats.tx_carrier_errors++;
2309                                         if ((flags & NV_TX_RETRYERROR) && !(flags & NV_TX_RETRYCOUNT_MASK))
2310                                                 nv_legacybackoff_reseed(dev);
2311                                         dev->stats.tx_errors++;
2312                                 } else {
2313                                         dev->stats.tx_packets++;
2314                                         dev->stats.tx_bytes += np->get_tx_ctx->skb->len;
2315                                 }
2316                                 dev_kfree_skb_any(np->get_tx_ctx->skb);
2317                                 np->get_tx_ctx->skb = NULL;
2318                         }
2319                 } else {
2320                         if (flags & NV_TX2_LASTPACKET) {
2321                                 if (flags & NV_TX2_ERROR) {
2322                                         if (flags & NV_TX2_UNDERFLOW)
2323                                                 dev->stats.tx_fifo_errors++;
2324                                         if (flags & NV_TX2_CARRIERLOST)
2325                                                 dev->stats.tx_carrier_errors++;
2326                                         if ((flags & NV_TX2_RETRYERROR) && !(flags & NV_TX2_RETRYCOUNT_MASK))
2327                                                 nv_legacybackoff_reseed(dev);
2328                                         dev->stats.tx_errors++;
2329                                 } else {
2330                                         dev->stats.tx_packets++;
2331                                         dev->stats.tx_bytes += np->get_tx_ctx->skb->len;
2332                                 }
2333                                 dev_kfree_skb_any(np->get_tx_ctx->skb);
2334                                 np->get_tx_ctx->skb = NULL;
2335                         }
2336                 }
2337                 if (unlikely(np->get_tx.orig++ == np->last_tx.orig))
2338                         np->get_tx.orig = np->first_tx.orig;
2339                 if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
2340                         np->get_tx_ctx = np->first_tx_ctx;
2341         }
2342         if (unlikely((np->tx_stop == 1) && (np->get_tx.orig != orig_get_tx))) {
2343                 np->tx_stop = 0;
2344                 netif_wake_queue(dev);
2345         }
2346 }
2347
2348 static void nv_tx_done_optimized(struct net_device *dev, int limit)
2349 {
2350         struct fe_priv *np = netdev_priv(dev);
2351         u32 flags;
2352         struct ring_desc_ex* orig_get_tx = np->get_tx.ex;
2353
2354         while ((np->get_tx.ex != np->put_tx.ex) &&
2355                !((flags = le32_to_cpu(np->get_tx.ex->flaglen)) & NV_TX_VALID) &&
2356                (limit-- > 0)) {
2357
2358                 dprintk(KERN_DEBUG "%s: nv_tx_done_optimized: flags 0x%x.\n",
2359                                         dev->name, flags);
2360
2361                 pci_unmap_page(np->pci_dev, np->get_tx_ctx->dma,
2362                                np->get_tx_ctx->dma_len,
2363                                PCI_DMA_TODEVICE);
2364                 np->get_tx_ctx->dma = 0;
2365
2366                 if (flags & NV_TX2_LASTPACKET) {
2367                         if (!(flags & NV_TX2_ERROR))
2368                                 dev->stats.tx_packets++;
2369                         else {
2370                                 if ((flags & NV_TX2_RETRYERROR) && !(flags & NV_TX2_RETRYCOUNT_MASK)) {
2371                                         if (np->driver_data & DEV_HAS_GEAR_MODE)
2372                                                 nv_gear_backoff_reseed(dev);
2373                                         else
2374                                                 nv_legacybackoff_reseed(dev);
2375                                 }
2376                         }
2377
2378                         dev_kfree_skb_any(np->get_tx_ctx->skb);
2379                         np->get_tx_ctx->skb = NULL;
2380
2381                         if (np->tx_limit) {
2382                                 nv_tx_flip_ownership(dev);
2383                         }
2384                 }
2385                 if (unlikely(np->get_tx.ex++ == np->last_tx.ex))
2386                         np->get_tx.ex = np->first_tx.ex;
2387                 if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
2388                         np->get_tx_ctx = np->first_tx_ctx;
2389         }
2390         if (unlikely((np->tx_stop == 1) && (np->get_tx.ex != orig_get_tx))) {
2391                 np->tx_stop = 0;
2392                 netif_wake_queue(dev);
2393         }
2394 }
2395
2396 /*
2397  * nv_tx_timeout: dev->tx_timeout function
2398  * Called with netif_tx_lock held.
2399  */
2400 static void nv_tx_timeout(struct net_device *dev)
2401 {
2402         struct fe_priv *np = netdev_priv(dev);
2403         u8 __iomem *base = get_hwbase(dev);
2404         u32 status;
2405
2406         if (np->msi_flags & NV_MSI_X_ENABLED)
2407                 status = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
2408         else
2409                 status = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
2410
2411         printk(KERN_INFO "%s: Got tx_timeout. irq: %08x\n", dev->name, status);
2412
2413         {
2414                 int i;
2415
2416                 printk(KERN_INFO "%s: Ring at %lx\n",
2417                        dev->name, (unsigned long)np->ring_addr);
2418                 printk(KERN_INFO "%s: Dumping tx registers\n", dev->name);
2419                 for (i=0;i<=np->register_size;i+= 32) {
2420                         printk(KERN_INFO "%3x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
2421                                         i,
2422                                         readl(base + i + 0), readl(base + i + 4),
2423                                         readl(base + i + 8), readl(base + i + 12),
2424                                         readl(base + i + 16), readl(base + i + 20),
2425                                         readl(base + i + 24), readl(base + i + 28));
2426                 }
2427                 printk(KERN_INFO "%s: Dumping tx ring\n", dev->name);
2428                 for (i=0;i<np->tx_ring_size;i+= 4) {
2429                         if (!nv_optimized(np)) {
2430                                 printk(KERN_INFO "%03x: %08x %08x // %08x %08x // %08x %08x // %08x %08x\n",
2431                                        i,
2432                                        le32_to_cpu(np->tx_ring.orig[i].buf),
2433                                        le32_to_cpu(np->tx_ring.orig[i].flaglen),
2434                                        le32_to_cpu(np->tx_ring.orig[i+1].buf),
2435                                        le32_to_cpu(np->tx_ring.orig[i+1].flaglen),
2436                                        le32_to_cpu(np->tx_ring.orig[i+2].buf),
2437                                        le32_to_cpu(np->tx_ring.orig[i+2].flaglen),
2438                                        le32_to_cpu(np->tx_ring.orig[i+3].buf),
2439                                        le32_to_cpu(np->tx_ring.orig[i+3].flaglen));
2440                         } else {
2441                                 printk(KERN_INFO "%03x: %08x %08x %08x // %08x %08x %08x // %08x %08x %08x // %08x %08x %08x\n",
2442                                        i,
2443                                        le32_to_cpu(np->tx_ring.ex[i].bufhigh),
2444                                        le32_to_cpu(np->tx_ring.ex[i].buflow),
2445                                        le32_to_cpu(np->tx_ring.ex[i].flaglen),
2446                                        le32_to_cpu(np->tx_ring.ex[i+1].bufhigh),
2447                                        le32_to_cpu(np->tx_ring.ex[i+1].buflow),
2448                                        le32_to_cpu(np->tx_ring.ex[i+1].flaglen),
2449                                        le32_to_cpu(np->tx_ring.ex[i+2].bufhigh),
2450                                        le32_to_cpu(np->tx_ring.ex[i+2].buflow),
2451                                        le32_to_cpu(np->tx_ring.ex[i+2].flaglen),
2452                                        le32_to_cpu(np->tx_ring.ex[i+3].bufhigh),
2453                                        le32_to_cpu(np->tx_ring.ex[i+3].buflow),
2454                                        le32_to_cpu(np->tx_ring.ex[i+3].flaglen));
2455                         }
2456                 }
2457         }
2458
2459         spin_lock_irq(&np->lock);
2460
2461         /* 1) stop tx engine */
2462         nv_stop_tx(dev);
2463
2464         /* 2) check that the packets were not sent already: */
2465         if (!nv_optimized(np))
2466                 nv_tx_done(dev);
2467         else
2468                 nv_tx_done_optimized(dev, np->tx_ring_size);
2469
2470         /* 3) if there are dead entries: clear everything */
2471         if (np->get_tx_ctx != np->put_tx_ctx) {
2472                 printk(KERN_DEBUG "%s: tx_timeout: dead entries!\n", dev->name);
2473                 nv_drain_tx(dev);
2474                 nv_init_tx(dev);
2475                 setup_hw_rings(dev, NV_SETUP_TX_RING);
2476         }
2477
2478         netif_wake_queue(dev);
2479
2480         /* 4) restart tx engine */
2481         nv_start_tx(dev);
2482         spin_unlock_irq(&np->lock);
2483 }
2484
2485 /*
2486  * Called when the nic notices a mismatch between the actual data len on the
2487  * wire and the len indicated in the 802 header
2488  */
2489 static int nv_getlen(struct net_device *dev, void *packet, int datalen)
2490 {
2491         int hdrlen;     /* length of the 802 header */
2492         int protolen;   /* length as stored in the proto field */
2493
2494         /* 1) calculate len according to header */
2495         if ( ((struct vlan_ethhdr *)packet)->h_vlan_proto == htons(ETH_P_8021Q)) {
2496                 protolen = ntohs( ((struct vlan_ethhdr *)packet)->h_vlan_encapsulated_proto );
2497                 hdrlen = VLAN_HLEN;
2498         } else {
2499                 protolen = ntohs( ((struct ethhdr *)packet)->h_proto);
2500                 hdrlen = ETH_HLEN;
2501         }
2502         dprintk(KERN_DEBUG "%s: nv_getlen: datalen %d, protolen %d, hdrlen %d\n",
2503                                 dev->name, datalen, protolen, hdrlen);
2504         if (protolen > ETH_DATA_LEN)
2505                 return datalen; /* Value in proto field not a len, no checks possible */
2506
2507         protolen += hdrlen;
2508         /* consistency checks: */
2509         if (datalen > ETH_ZLEN) {
2510                 if (datalen >= protolen) {
2511                         /* more data on wire than in 802 header, trim of
2512                          * additional data.
2513                          */
2514                         dprintk(KERN_DEBUG "%s: nv_getlen: accepting %d bytes.\n",
2515                                         dev->name, protolen);
2516                         return protolen;
2517                 } else {
2518                         /* less data on wire than mentioned in header.
2519                          * Discard the packet.
2520                          */
2521                         dprintk(KERN_DEBUG "%s: nv_getlen: discarding long packet.\n",
2522                                         dev->name);
2523                         return -1;
2524                 }
2525         } else {
2526                 /* short packet. Accept only if 802 values are also short */
2527                 if (protolen > ETH_ZLEN) {
2528                         dprintk(KERN_DEBUG "%s: nv_getlen: discarding short packet.\n",
2529                                         dev->name);
2530                         return -1;
2531                 }
2532                 dprintk(KERN_DEBUG "%s: nv_getlen: accepting %d bytes.\n",
2533                                 dev->name, datalen);
2534                 return datalen;
2535         }
2536 }
2537
2538 static int nv_rx_process(struct net_device *dev, int limit)
2539 {
2540         struct fe_priv *np = netdev_priv(dev);
2541         u32 flags;
2542         int rx_work = 0;
2543         struct sk_buff *skb;
2544         int len;
2545
2546         while((np->get_rx.orig != np->put_rx.orig) &&
2547               !((flags = le32_to_cpu(np->get_rx.orig->flaglen)) & NV_RX_AVAIL) &&
2548                 (rx_work < limit)) {
2549
2550                 dprintk(KERN_DEBUG "%s: nv_rx_process: flags 0x%x.\n",
2551                                         dev->name, flags);
2552
2553                 /*
2554                  * the packet is for us - immediately tear down the pci mapping.
2555                  * TODO: check if a prefetch of the first cacheline improves
2556                  * the performance.
2557                  */
2558                 pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
2559                                 np->get_rx_ctx->dma_len,
2560                                 PCI_DMA_FROMDEVICE);
2561                 skb = np->get_rx_ctx->skb;
2562                 np->get_rx_ctx->skb = NULL;
2563
2564                 {
2565                         int j;
2566                         dprintk(KERN_DEBUG "Dumping packet (flags 0x%x).",flags);
2567                         for (j=0; j<64; j++) {
2568                                 if ((j%16) == 0)
2569                                         dprintk("\n%03x:", j);
2570                                 dprintk(" %02x", ((unsigned char*)skb->data)[j]);
2571                         }
2572                         dprintk("\n");
2573                 }
2574                 /* look at what we actually got: */
2575                 if (np->desc_ver == DESC_VER_1) {
2576                         if (likely(flags & NV_RX_DESCRIPTORVALID)) {
2577                                 len = flags & LEN_MASK_V1;
2578                                 if (unlikely(flags & NV_RX_ERROR)) {
2579                                         if (flags & NV_RX_ERROR4) {
2580                                                 len = nv_getlen(dev, skb->data, len);
2581                                                 if (len < 0) {
2582                                                         dev->stats.rx_errors++;
2583                                                         dev_kfree_skb(skb);
2584                                                         goto next_pkt;
2585                                                 }
2586                                         }
2587                                         /* framing errors are soft errors */
2588                                         else if (flags & NV_RX_FRAMINGERR) {
2589                                                 if (flags & NV_RX_SUBSTRACT1) {
2590                                                         len--;
2591                                                 }
2592                                         }
2593                                         /* the rest are hard errors */
2594                                         else {
2595                                                 if (flags & NV_RX_MISSEDFRAME)
2596                                                         dev->stats.rx_missed_errors++;
2597                                                 if (flags & NV_RX_CRCERR)
2598                                                         dev->stats.rx_crc_errors++;
2599                                                 if (flags & NV_RX_OVERFLOW)
2600                                                         dev->stats.rx_over_errors++;
2601                                                 dev->stats.rx_errors++;
2602                                                 dev_kfree_skb(skb);
2603                                                 goto next_pkt;
2604                                         }
2605                                 }
2606                         } else {
2607                                 dev_kfree_skb(skb);
2608                                 goto next_pkt;
2609                         }
2610                 } else {
2611                         if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
2612                                 len = flags & LEN_MASK_V2;
2613                                 if (unlikely(flags & NV_RX2_ERROR)) {
2614                                         if (flags & NV_RX2_ERROR4) {
2615                                                 len = nv_getlen(dev, skb->data, len);
2616                                                 if (len < 0) {
2617                                                         dev->stats.rx_errors++;
2618                                                         dev_kfree_skb(skb);
2619                                                         goto next_pkt;
2620                                                 }
2621                                         }
2622                                         /* framing errors are soft errors */
2623                                         else if (flags & NV_RX2_FRAMINGERR) {
2624                                                 if (flags & NV_RX2_SUBSTRACT1) {
2625                                                         len--;
2626                                                 }
2627                                         }
2628                                         /* the rest are hard errors */
2629                                         else {
2630                                                 if (flags & NV_RX2_CRCERR)
2631                                                         dev->stats.rx_crc_errors++;
2632                                                 if (flags & NV_RX2_OVERFLOW)
2633                                                         dev->stats.rx_over_errors++;
2634                                                 dev->stats.rx_errors++;
2635                                                 dev_kfree_skb(skb);
2636                                                 goto next_pkt;
2637                                         }
2638                                 }
2639                                 if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
2640                                     ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP))   /*ip and udp */
2641                                         skb->ip_summed = CHECKSUM_UNNECESSARY;
2642                         } else {
2643                                 dev_kfree_skb(skb);
2644                                 goto next_pkt;
2645                         }
2646                 }
2647                 /* got a valid packet - forward it to the network core */
2648                 skb_put(skb, len);
2649                 skb->protocol = eth_type_trans(skb, dev);
2650                 dprintk(KERN_DEBUG "%s: nv_rx_process: %d bytes, proto %d accepted.\n",
2651                                         dev->name, len, skb->protocol);
2652 #ifdef CONFIG_FORCEDETH_NAPI
2653                 netif_receive_skb(skb);
2654 #else
2655                 netif_rx(skb);
2656 #endif
2657                 dev->last_rx = jiffies;
2658                 dev->stats.rx_packets++;
2659                 dev->stats.rx_bytes += len;
2660 next_pkt:
2661                 if (unlikely(np->get_rx.orig++ == np->last_rx.orig))
2662                         np->get_rx.orig = np->first_rx.orig;
2663                 if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
2664                         np->get_rx_ctx = np->first_rx_ctx;
2665
2666                 rx_work++;
2667         }
2668
2669         return rx_work;
2670 }
2671
2672 static int nv_rx_process_optimized(struct net_device *dev, int limit)
2673 {
2674         struct fe_priv *np = netdev_priv(dev);
2675         u32 flags;
2676         u32 vlanflags = 0;
2677         int rx_work = 0;
2678         struct sk_buff *skb;
2679         int len;
2680
2681         while((np->get_rx.ex != np->put_rx.ex) &&
2682               !((flags = le32_to_cpu(np->get_rx.ex->flaglen)) & NV_RX2_AVAIL) &&
2683               (rx_work < limit)) {
2684
2685                 dprintk(KERN_DEBUG "%s: nv_rx_process_optimized: flags 0x%x.\n",
2686                                         dev->name, flags);
2687
2688                 /*
2689                  * the packet is for us - immediately tear down the pci mapping.
2690                  * TODO: check if a prefetch of the first cacheline improves
2691                  * the performance.
2692                  */
2693                 pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
2694                                 np->get_rx_ctx->dma_len,
2695                                 PCI_DMA_FROMDEVICE);
2696                 skb = np->get_rx_ctx->skb;
2697                 np->get_rx_ctx->skb = NULL;
2698
2699                 {
2700                         int j;
2701                         dprintk(KERN_DEBUG "Dumping packet (flags 0x%x).",flags);
2702                         for (j=0; j<64; j++) {
2703                                 if ((j%16) == 0)
2704                                         dprintk("\n%03x:", j);
2705                                 dprintk(" %02x", ((unsigned char*)skb->data)[j]);
2706                         }
2707                         dprintk("\n");
2708                 }
2709                 /* look at what we actually got: */
2710                 if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
2711                         len = flags & LEN_MASK_V2;
2712                         if (unlikely(flags & NV_RX2_ERROR)) {
2713                                 if (flags & NV_RX2_ERROR4) {
2714                                         len = nv_getlen(dev, skb->data, len);
2715                                         if (len < 0) {
2716                                                 dev_kfree_skb(skb);
2717                                                 goto next_pkt;
2718                                         }
2719                                 }
2720                                 /* framing errors are soft errors */
2721                                 else if (flags & NV_RX2_FRAMINGERR) {
2722                                         if (flags & NV_RX2_SUBSTRACT1) {
2723                                                 len--;
2724                                         }
2725                                 }
2726                                 /* the rest are hard errors */
2727                                 else {
2728                                         dev_kfree_skb(skb);
2729                                         goto next_pkt;
2730                                 }
2731                         }
2732
2733                         if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
2734                             ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP))   /*ip and udp */
2735                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
2736
2737                         /* got a valid packet - forward it to the network core */
2738                         skb_put(skb, len);
2739                         skb->protocol = eth_type_trans(skb, dev);
2740                         prefetch(skb->data);
2741
2742                         dprintk(KERN_DEBUG "%s: nv_rx_process_optimized: %d bytes, proto %d accepted.\n",
2743                                 dev->name, len, skb->protocol);
2744
2745                         if (likely(!np->vlangrp)) {
2746 #ifdef CONFIG_FORCEDETH_NAPI
2747                                 netif_receive_skb(skb);
2748 #else
2749                                 netif_rx(skb);
2750 #endif
2751                         } else {
2752                                 vlanflags = le32_to_cpu(np->get_rx.ex->buflow);
2753                                 if (vlanflags & NV_RX3_VLAN_TAG_PRESENT) {
2754 #ifdef CONFIG_FORCEDETH_NAPI
2755                                         vlan_hwaccel_receive_skb(skb, np->vlangrp,
2756                                                                  vlanflags & NV_RX3_VLAN_TAG_MASK);
2757 #else
2758                                         vlan_hwaccel_rx(skb, np->vlangrp,
2759                                                         vlanflags & NV_RX3_VLAN_TAG_MASK);
2760 #endif
2761                                 } else {
2762 #ifdef CONFIG_FORCEDETH_NAPI
2763                                         netif_receive_skb(skb);
2764 #else
2765                                         netif_rx(skb);
2766 #endif
2767                                 }
2768                         }
2769
2770                         dev->last_rx = jiffies;
2771                         dev->stats.rx_packets++;
2772                         dev->stats.rx_bytes += len;
2773                 } else {
2774                         dev_kfree_skb(skb);
2775                 }
2776 next_pkt:
2777                 if (unlikely(np->get_rx.ex++ == np->last_rx.ex))
2778                         np->get_rx.ex = np->first_rx.ex;
2779                 if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
2780                         np->get_rx_ctx = np->first_rx_ctx;
2781
2782                 rx_work++;
2783         }
2784
2785         return rx_work;
2786 }
2787
2788 static void set_bufsize(struct net_device *dev)
2789 {
2790         struct fe_priv *np = netdev_priv(dev);
2791
2792         if (dev->mtu <= ETH_DATA_LEN)
2793                 np->rx_buf_sz = ETH_DATA_LEN + NV_RX_HEADERS;
2794         else
2795                 np->rx_buf_sz = dev->mtu + NV_RX_HEADERS;
2796 }
2797
2798 /*
2799  * nv_change_mtu: dev->change_mtu function
2800  * Called with dev_base_lock held for read.
2801  */
2802 static int nv_change_mtu(struct net_device *dev, int new_mtu)
2803 {
2804         struct fe_priv *np = netdev_priv(dev);
2805         int old_mtu;
2806
2807         if (new_mtu < 64 || new_mtu > np->pkt_limit)
2808                 return -EINVAL;
2809
2810         old_mtu = dev->mtu;
2811         dev->mtu = new_mtu;
2812
2813         /* return early if the buffer sizes will not change */
2814         if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
2815                 return 0;
2816         if (old_mtu == new_mtu)
2817                 return 0;
2818
2819         /* synchronized against open : rtnl_lock() held by caller */
2820         if (netif_running(dev)) {
2821                 u8 __iomem *base = get_hwbase(dev);
2822                 /*
2823                  * It seems that the nic preloads valid ring entries into an
2824                  * internal buffer. The procedure for flushing everything is
2825                  * guessed, there is probably a simpler approach.
2826                  * Changing the MTU is a rare event, it shouldn't matter.
2827                  */
2828                 nv_disable_irq(dev);
2829                 netif_tx_lock_bh(dev);
2830                 spin_lock(&np->lock);
2831                 /* stop engines */
2832                 nv_stop_rxtx(dev);
2833                 nv_txrx_reset(dev);
2834                 /* drain rx queue */
2835                 nv_drain_rxtx(dev);
2836                 /* reinit driver view of the rx queue */
2837                 set_bufsize(dev);
2838                 if (nv_init_ring(dev)) {
2839                         if (!np->in_shutdown)
2840                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
2841                 }
2842                 /* reinit nic view of the rx queue */
2843                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
2844                 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
2845                 writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
2846                         base + NvRegRingSizes);
2847                 pci_push(base);
2848                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2849                 pci_push(base);
2850
2851                 /* restart rx engine */
2852                 nv_start_rxtx(dev);
2853                 spin_unlock(&np->lock);
2854                 netif_tx_unlock_bh(dev);
2855                 nv_enable_irq(dev);
2856         }
2857         return 0;
2858 }
2859
2860 static void nv_copy_mac_to_hw(struct net_device *dev)
2861 {
2862         u8 __iomem *base = get_hwbase(dev);
2863         u32 mac[2];
2864
2865         mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
2866                         (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
2867         mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
2868
2869         writel(mac[0], base + NvRegMacAddrA);
2870         writel(mac[1], base + NvRegMacAddrB);
2871 }
2872
2873 /*
2874  * nv_set_mac_address: dev->set_mac_address function
2875  * Called with rtnl_lock() held.
2876  */
2877 static int nv_set_mac_address(struct net_device *dev, void *addr)
2878 {
2879         struct fe_priv *np = netdev_priv(dev);
2880         struct sockaddr *macaddr = (struct sockaddr*)addr;
2881
2882         if (!is_valid_ether_addr(macaddr->sa_data))
2883                 return -EADDRNOTAVAIL;
2884
2885         /* synchronized against open : rtnl_lock() held by caller */
2886         memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
2887
2888         if (netif_running(dev)) {
2889                 netif_tx_lock_bh(dev);
2890                 spin_lock_irq(&np->lock);
2891
2892                 /* stop rx engine */
2893                 nv_stop_rx(dev);
2894
2895                 /* set mac address */
2896                 nv_copy_mac_to_hw(dev);
2897
2898                 /* restart rx engine */
2899                 nv_start_rx(dev);
2900                 spin_unlock_irq(&np->lock);
2901                 netif_tx_unlock_bh(dev);
2902         } else {
2903                 nv_copy_mac_to_hw(dev);
2904         }
2905         return 0;
2906 }
2907
2908 /*
2909  * nv_set_multicast: dev->set_multicast function
2910  * Called with netif_tx_lock held.
2911  */
2912 static void nv_set_multicast(struct net_device *dev)
2913 {
2914         struct fe_priv *np = netdev_priv(dev);
2915         u8 __iomem *base = get_hwbase(dev);
2916         u32 addr[2];
2917         u32 mask[2];
2918         u32 pff = readl(base + NvRegPacketFilterFlags) & NVREG_PFF_PAUSE_RX;
2919
2920         memset(addr, 0, sizeof(addr));
2921         memset(mask, 0, sizeof(mask));
2922
2923         if (dev->flags & IFF_PROMISC) {
2924                 pff |= NVREG_PFF_PROMISC;
2925         } else {
2926                 pff |= NVREG_PFF_MYADDR;
2927
2928                 if (dev->flags & IFF_ALLMULTI || dev->mc_list) {
2929                         u32 alwaysOff[2];
2930                         u32 alwaysOn[2];
2931
2932                         alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0xffffffff;
2933                         if (dev->flags & IFF_ALLMULTI) {
2934                                 alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0;
2935                         } else {
2936                                 struct dev_mc_list *walk;
2937
2938                                 walk = dev->mc_list;
2939                                 while (walk != NULL) {
2940                                         u32 a, b;
2941                                         a = le32_to_cpu(*(__le32 *) walk->dmi_addr);
2942                                         b = le16_to_cpu(*(__le16 *) (&walk->dmi_addr[4]));
2943                                         alwaysOn[0] &= a;
2944                                         alwaysOff[0] &= ~a;
2945                                         alwaysOn[1] &= b;
2946                                         alwaysOff[1] &= ~b;
2947                                         walk = walk->next;
2948                                 }
2949                         }
2950                         addr[0] = alwaysOn[0];
2951                         addr[1] = alwaysOn[1];
2952                         mask[0] = alwaysOn[0] | alwaysOff[0];
2953                         mask[1] = alwaysOn[1] | alwaysOff[1];
2954                 } else {
2955                         mask[0] = NVREG_MCASTMASKA_NONE;
2956                         mask[1] = NVREG_MCASTMASKB_NONE;
2957                 }
2958         }
2959         addr[0] |= NVREG_MCASTADDRA_FORCE;
2960         pff |= NVREG_PFF_ALWAYS;
2961         spin_lock_irq(&np->lock);
2962         nv_stop_rx(dev);
2963         writel(addr[0], base + NvRegMulticastAddrA);
2964         writel(addr[1], base + NvRegMulticastAddrB);
2965         writel(mask[0], base + NvRegMulticastMaskA);
2966         writel(mask[1], base + NvRegMulticastMaskB);
2967         writel(pff, base + NvRegPacketFilterFlags);
2968         dprintk(KERN_INFO "%s: reconfiguration for multicast lists.\n",
2969                 dev->name);
2970         nv_start_rx(dev);
2971         spin_unlock_irq(&np->lock);
2972 }
2973
2974 static void nv_update_pause(struct net_device *dev, u32 pause_flags)
2975 {
2976         struct fe_priv *np = netdev_priv(dev);
2977         u8 __iomem *base = get_hwbase(dev);
2978
2979         np->pause_flags &= ~(NV_PAUSEFRAME_TX_ENABLE | NV_PAUSEFRAME_RX_ENABLE);
2980
2981         if (np->pause_flags & NV_PAUSEFRAME_RX_CAPABLE) {
2982                 u32 pff = readl(base + NvRegPacketFilterFlags) & ~NVREG_PFF_PAUSE_RX;
2983                 if (pause_flags & NV_PAUSEFRAME_RX_ENABLE) {
2984                         writel(pff|NVREG_PFF_PAUSE_RX, base + NvRegPacketFilterFlags);
2985                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
2986                 } else {
2987                         writel(pff, base + NvRegPacketFilterFlags);
2988                 }
2989         }
2990         if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE) {
2991                 u32 regmisc = readl(base + NvRegMisc1) & ~NVREG_MISC1_PAUSE_TX;
2992                 if (pause_flags & NV_PAUSEFRAME_TX_ENABLE) {
2993                         u32 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V1;
2994                         if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V2)
2995                                 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V2;
2996                         if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V3)
2997                                 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V3;
2998                         writel(pause_enable,  base + NvRegTxPauseFrame);
2999                         writel(regmisc|NVREG_MISC1_PAUSE_TX, base + NvRegMisc1);
3000                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3001                 } else {
3002                         writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
3003                         writel(regmisc, base + NvRegMisc1);
3004                 }
3005         }
3006 }
3007
3008 /**
3009  * nv_update_linkspeed: Setup the MAC according to the link partner
3010  * @dev: Network device to be configured
3011  *
3012  * The function queries the PHY and checks if there is a link partner.
3013  * If yes, then it sets up the MAC accordingly. Otherwise, the MAC is
3014  * set to 10 MBit HD.
3015  *
3016  * The function returns 0 if there is no link partner and 1 if there is
3017  * a good link partner.
3018  */
3019 static int nv_update_linkspeed(struct net_device *dev)
3020 {
3021         struct fe_priv *np = netdev_priv(dev);
3022         u8 __iomem *base = get_hwbase(dev);
3023         int adv = 0;
3024         int lpa = 0;
3025         int adv_lpa, adv_pause, lpa_pause;
3026         int newls = np->linkspeed;
3027         int newdup = np->duplex;
3028         int mii_status;
3029         int retval = 0;
3030         u32 control_1000, status_1000, phyreg, pause_flags, txreg;
3031         u32 txrxFlags = 0;
3032         u32 phy_exp;
3033
3034         /* BMSR_LSTATUS is latched, read it twice:
3035          * we want the current value.
3036          */
3037         mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3038         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3039
3040         if (!(mii_status & BMSR_LSTATUS)) {
3041                 dprintk(KERN_DEBUG "%s: no link detected by phy - falling back to 10HD.\n",
3042                                 dev->name);
3043                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3044                 newdup = 0;
3045                 retval = 0;
3046                 goto set_speed;
3047         }
3048
3049         if (np->autoneg == 0) {
3050                 dprintk(KERN_DEBUG "%s: nv_update_linkspeed: autoneg off, PHY set to 0x%04x.\n",
3051                                 dev->name, np->fixed_mode);
3052                 if (np->fixed_mode & LPA_100FULL) {
3053                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3054                         newdup = 1;
3055                 } else if (np->fixed_mode & LPA_100HALF) {
3056                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3057                         newdup = 0;
3058                 } else if (np->fixed_mode & LPA_10FULL) {
3059                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3060                         newdup = 1;
3061                 } else {
3062                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3063                         newdup = 0;
3064                 }
3065                 retval = 1;
3066                 goto set_speed;
3067         }
3068         /* check auto negotiation is complete */
3069         if (!(mii_status & BMSR_ANEGCOMPLETE)) {
3070                 /* still in autonegotiation - configure nic for 10 MBit HD and wait. */
3071                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3072                 newdup = 0;
3073                 retval = 0;
3074                 dprintk(KERN_DEBUG "%s: autoneg not completed - falling back to 10HD.\n", dev->name);
3075                 goto set_speed;
3076         }
3077
3078         adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3079         lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ);
3080         dprintk(KERN_DEBUG "%s: nv_update_linkspeed: PHY advertises 0x%04x, lpa 0x%04x.\n",
3081                                 dev->name, adv, lpa);
3082
3083         retval = 1;
3084         if (np->gigabit == PHY_GIGABIT) {
3085                 control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
3086                 status_1000 = mii_rw(dev, np->phyaddr, MII_STAT1000, MII_READ);
3087
3088                 if ((control_1000 & ADVERTISE_1000FULL) &&
3089                         (status_1000 & LPA_1000FULL)) {
3090                         dprintk(KERN_DEBUG "%s: nv_update_linkspeed: GBit ethernet detected.\n",
3091                                 dev->name);
3092                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_1000;
3093                         newdup = 1;
3094                         goto set_speed;
3095                 }
3096         }
3097
3098         /* FIXME: handle parallel detection properly */
3099         adv_lpa = lpa & adv;
3100         if (adv_lpa & LPA_100FULL) {
3101                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3102                 newdup = 1;
3103         } else if (adv_lpa & LPA_100HALF) {
3104                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3105                 newdup = 0;
3106         } else if (adv_lpa & LPA_10FULL) {
3107                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3108                 newdup = 1;
3109         } else if (adv_lpa & LPA_10HALF) {
3110                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3111                 newdup = 0;
3112         } else {
3113                 dprintk(KERN_DEBUG "%s: bad ability %04x - falling back to 10HD.\n", dev->name, adv_lpa);
3114                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3115                 newdup = 0;
3116         }
3117
3118 set_speed:
3119         if (np->duplex == newdup && np->linkspeed == newls)
3120                 return retval;
3121
3122         dprintk(KERN_INFO "%s: changing link setting from %d/%d to %d/%d.\n",
3123                         dev->name, np->linkspeed, np->duplex, newls, newdup);
3124
3125         np->duplex = newdup;
3126         np->linkspeed = newls;
3127
3128         /* The transmitter and receiver must be restarted for safe update */
3129         if (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START) {
3130                 txrxFlags |= NV_RESTART_TX;
3131                 nv_stop_tx(dev);
3132         }
3133         if (readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) {
3134                 txrxFlags |= NV_RESTART_RX;
3135                 nv_stop_rx(dev);
3136         }
3137
3138         if (np->gigabit == PHY_GIGABIT) {
3139                 phyreg = readl(base + NvRegSlotTime);
3140                 phyreg &= ~(0x3FF00);
3141                 if (((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10) ||
3142                     ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100))
3143                         phyreg |= NVREG_SLOTTIME_10_100_FULL;
3144                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
3145                         phyreg |= NVREG_SLOTTIME_1000_FULL;
3146                 writel(phyreg, base + NvRegSlotTime);
3147         }
3148
3149         phyreg = readl(base + NvRegPhyInterface);
3150         phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
3151         if (np->duplex == 0)
3152                 phyreg |= PHY_HALF;
3153         if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
3154                 phyreg |= PHY_100;
3155         else if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
3156                 phyreg |= PHY_1000;
3157         writel(phyreg, base + NvRegPhyInterface);
3158
3159         phy_exp = mii_rw(dev, np->phyaddr, MII_EXPANSION, MII_READ) & EXPANSION_NWAY; /* autoneg capable */
3160         if (phyreg & PHY_RGMII) {
3161                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000) {
3162                         txreg = NVREG_TX_DEFERRAL_RGMII_1000;
3163                 } else {
3164                         if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX)) {
3165                                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_10)
3166                                         txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_10;
3167                                 else
3168                                         txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_100;
3169                         } else {
3170                                 txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
3171                         }
3172                 }
3173         } else {
3174                 if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX))
3175                         txreg = NVREG_TX_DEFERRAL_MII_STRETCH;
3176                 else
3177                         txreg = NVREG_TX_DEFERRAL_DEFAULT;
3178         }
3179         writel(txreg, base + NvRegTxDeferral);
3180
3181         if (np->desc_ver == DESC_VER_1) {
3182                 txreg = NVREG_TX_WM_DESC1_DEFAULT;
3183         } else {
3184                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
3185                         txreg = NVREG_TX_WM_DESC2_3_1000;
3186                 else
3187                         txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
3188         }
3189         writel(txreg, base + NvRegTxWatermark);
3190
3191         writel(NVREG_MISC1_FORCE | ( np->duplex ? 0 : NVREG_MISC1_HD),
3192                 base + NvRegMisc1);
3193         pci_push(base);
3194         writel(np->linkspeed, base + NvRegLinkSpeed);
3195         pci_push(base);
3196
3197         pause_flags = 0;
3198         /* setup pause frame */
3199         if (np->duplex != 0) {
3200                 if (np->autoneg && np->pause_flags & NV_PAUSEFRAME_AUTONEG) {
3201                         adv_pause = adv & (ADVERTISE_PAUSE_CAP| ADVERTISE_PAUSE_ASYM);
3202                         lpa_pause = lpa & (LPA_PAUSE_CAP| LPA_PAUSE_ASYM);
3203
3204                         switch (adv_pause) {
3205                         case ADVERTISE_PAUSE_CAP:
3206                                 if (lpa_pause & LPA_PAUSE_CAP) {
3207                                         pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3208                                         if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3209                                                 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3210                                 }
3211                                 break;
3212                         case ADVERTISE_PAUSE_ASYM:
3213                                 if (lpa_pause == (LPA_PAUSE_CAP| LPA_PAUSE_ASYM))
3214                                 {
3215                                         pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3216                                 }
3217                                 break;
3218                         case ADVERTISE_PAUSE_CAP| ADVERTISE_PAUSE_ASYM:
3219                                 if (lpa_pause & LPA_PAUSE_CAP)
3220                                 {
3221                                         pause_flags |=  NV_PAUSEFRAME_RX_ENABLE;
3222                                         if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3223                                                 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3224                                 }
3225                                 if (lpa_pause == LPA_PAUSE_ASYM)
3226                                 {
3227                                         pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3228                                 }
3229                                 break;
3230                         }
3231                 } else {
3232                         pause_flags = np->pause_flags;
3233                 }
3234         }
3235         nv_update_pause(dev, pause_flags);
3236
3237         if (txrxFlags & NV_RESTART_TX)
3238                 nv_start_tx(dev);
3239         if (txrxFlags & NV_RESTART_RX)
3240                 nv_start_rx(dev);
3241
3242         return retval;
3243 }
3244
3245 static void nv_linkchange(struct net_device *dev)
3246 {
3247         if (nv_update_linkspeed(dev)) {
3248                 if (!netif_carrier_ok(dev)) {
3249                         netif_carrier_on(dev);
3250                         printk(KERN_INFO "%s: link up.\n", dev->name);
3251                         nv_start_rx(dev);
3252                 }
3253         } else {
3254                 if (netif_carrier_ok(dev)) {
3255                         netif_carrier_off(dev);
3256                         printk(KERN_INFO "%s: link down.\n", dev->name);
3257                         nv_stop_rx(dev);
3258                 }
3259         }
3260 }
3261
3262 static void nv_link_irq(struct net_device *dev)
3263 {
3264         u8 __iomem *base = get_hwbase(dev);
3265         u32 miistat;
3266
3267         miistat = readl(base + NvRegMIIStatus);
3268         writel(NVREG_MIISTAT_LINKCHANGE, base + NvRegMIIStatus);
3269         dprintk(KERN_INFO "%s: link change irq, status 0x%x.\n", dev->name, miistat);
3270
3271         if (miistat & (NVREG_MIISTAT_LINKCHANGE))
3272                 nv_linkchange(dev);
3273         dprintk(KERN_DEBUG "%s: link change notification done.\n", dev->name);
3274 }
3275
3276 static void nv_msi_workaround(struct fe_priv *np)
3277 {
3278
3279         /* Need to toggle the msi irq mask within the ethernet device,
3280          * otherwise, future interrupts will not be detected.
3281          */
3282         if (np->msi_flags & NV_MSI_ENABLED) {
3283                 u8 __iomem *base = np->base;
3284
3285                 writel(0, base + NvRegMSIIrqMask);
3286                 writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
3287         }
3288 }
3289
3290 static irqreturn_t nv_nic_irq(int foo, void *data)
3291 {
3292         struct net_device *dev = (struct net_device *) data;
3293         struct fe_priv *np = netdev_priv(dev);
3294         u8 __iomem *base = get_hwbase(dev);
3295         u32 events;
3296         int i;
3297
3298         dprintk(KERN_DEBUG "%s: nv_nic_irq\n", dev->name);
3299
3300         for (i=0; ; i++) {
3301                 if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3302                         events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
3303                         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
3304                 } else {
3305                         events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
3306                         writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
3307                 }
3308                 dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
3309                 if (!(events & np->irqmask))
3310                         break;
3311
3312                 nv_msi_workaround(np);
3313
3314                 spin_lock(&np->lock);
3315                 nv_tx_done(dev);
3316                 spin_unlock(&np->lock);
3317
3318 #ifdef CONFIG_FORCEDETH_NAPI
3319                 if (events & NVREG_IRQ_RX_ALL) {
3320                         netif_rx_schedule(dev, &np->napi);
3321
3322                         /* Disable furthur receive irq's */
3323                         spin_lock(&np->lock);
3324                         np->irqmask &= ~NVREG_IRQ_RX_ALL;
3325
3326                         if (np->msi_flags & NV_MSI_X_ENABLED)
3327                                 writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3328                         else
3329                                 writel(np->irqmask, base + NvRegIrqMask);
3330                         spin_unlock(&np->lock);
3331                 }
3332 #else
3333                 if (nv_rx_process(dev, RX_WORK_PER_LOOP)) {
3334                         if (unlikely(nv_alloc_rx(dev))) {
3335                                 spin_lock(&np->lock);
3336                                 if (!np->in_shutdown)
3337                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3338                                 spin_unlock(&np->lock);
3339                         }
3340                 }
3341 #endif
3342                 if (unlikely(events & NVREG_IRQ_LINK)) {
3343                         spin_lock(&np->lock);
3344                         nv_link_irq(dev);
3345                         spin_unlock(&np->lock);
3346                 }
3347                 if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
3348                         spin_lock(&np->lock);
3349                         nv_linkchange(dev);
3350                         spin_unlock(&np->lock);
3351                         np->link_timeout = jiffies + LINK_TIMEOUT;
3352                 }
3353                 if (unlikely(events & (NVREG_IRQ_TX_ERR))) {
3354                         dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
3355                                                 dev->name, events);
3356                 }
3357                 if (unlikely(events & (NVREG_IRQ_UNKNOWN))) {
3358                         printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
3359                                                 dev->name, events);
3360                 }
3361                 if (unlikely(events & NVREG_IRQ_RECOVER_ERROR)) {
3362                         spin_lock(&np->lock);
3363                         /* disable interrupts on the nic */
3364                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
3365                                 writel(0, base + NvRegIrqMask);
3366                         else
3367                                 writel(np->irqmask, base + NvRegIrqMask);
3368                         pci_push(base);
3369
3370                         if (!np->in_shutdown) {
3371                                 np->nic_poll_irq = np->irqmask;
3372                                 np->recover_error = 1;
3373                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3374                         }
3375                         spin_unlock(&np->lock);
3376                         break;
3377                 }
3378                 if (unlikely(i > max_interrupt_work)) {
3379                         spin_lock(&np->lock);
3380                         /* disable interrupts on the nic */
3381                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
3382                                 writel(0, base + NvRegIrqMask);
3383                         else
3384                                 writel(np->irqmask, base + NvRegIrqMask);
3385                         pci_push(base);
3386
3387                         if (!np->in_shutdown) {
3388                                 np->nic_poll_irq = np->irqmask;
3389                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3390                         }
3391                         spin_unlock(&np->lock);
3392                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq.\n", dev->name, i);
3393                         break;
3394                 }
3395
3396         }
3397         dprintk(KERN_DEBUG "%s: nv_nic_irq completed\n", dev->name);
3398
3399         return IRQ_RETVAL(i);
3400 }
3401
3402 /**
3403  * All _optimized functions are used to help increase performance
3404  * (reduce CPU and increase throughput). They use descripter version 3,
3405  * compiler directives, and reduce memory accesses.
3406  */
3407 static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
3408 {
3409         struct net_device *dev = (struct net_device *) data;
3410         struct fe_priv *np = netdev_priv(dev);
3411         u8 __iomem *base = get_hwbase(dev);
3412         u32 events;
3413         int i;
3414
3415         dprintk(KERN_DEBUG "%s: nv_nic_irq_optimized\n", dev->name);
3416
3417         for (i=0; ; i++) {
3418                 if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3419                         events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
3420                         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
3421                 } else {
3422                         events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
3423                         writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
3424                 }
3425                 dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
3426                 if (!(events & np->irqmask))
3427                         break;
3428
3429                 nv_msi_workaround(np);
3430
3431                 spin_lock(&np->lock);
3432                 nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3433                 spin_unlock(&np->lock);
3434
3435 #ifdef CONFIG_FORCEDETH_NAPI
3436                 if (events & NVREG_IRQ_RX_ALL) {
3437                         netif_rx_schedule(dev, &np->napi);
3438
3439                         /* Disable furthur receive irq's */
3440                         spin_lock(&np->lock);
3441                         np->irqmask &= ~NVREG_IRQ_RX_ALL;
3442
3443                         if (np->msi_flags & NV_MSI_X_ENABLED)
3444                                 writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3445                         else
3446                                 writel(np->irqmask, base + NvRegIrqMask);
3447                         spin_unlock(&np->lock);
3448                 }
3449 #else
3450                 if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) {
3451                         if (unlikely(nv_alloc_rx_optimized(dev))) {
3452                                 spin_lock(&np->lock);
3453                                 if (!np->in_shutdown)
3454                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3455                                 spin_unlock(&np->lock);
3456                         }
3457                 }
3458 #endif
3459                 if (unlikely(events & NVREG_IRQ_LINK)) {
3460                         spin_lock(&np->lock);
3461                         nv_link_irq(dev);
3462                         spin_unlock(&np->lock);
3463                 }
3464                 if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
3465                         spin_lock(&np->lock);
3466                         nv_linkchange(dev);
3467                         spin_unlock(&np->lock);
3468                         np->link_timeout = jiffies + LINK_TIMEOUT;
3469                 }
3470                 if (unlikely(events & (NVREG_IRQ_TX_ERR))) {
3471                         dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
3472                                                 dev->name, events);
3473                 }
3474                 if (unlikely(events & (NVREG_IRQ_UNKNOWN))) {
3475                         printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
3476                                                 dev->name, events);
3477                 }
3478                 if (unlikely(events & NVREG_IRQ_RECOVER_ERROR)) {
3479                         spin_lock(&np->lock);
3480                         /* disable interrupts on the nic */
3481                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
3482                                 writel(0, base + NvRegIrqMask);
3483                         else
3484                                 writel(np->irqmask, base + NvRegIrqMask);
3485                         pci_push(base);
3486
3487                         if (!np->in_shutdown) {
3488                                 np->nic_poll_irq = np->irqmask;
3489                                 np->recover_error = 1;
3490                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3491                         }
3492                         spin_unlock(&np->lock);
3493                         break;
3494                 }
3495
3496                 if (unlikely(i > max_interrupt_work)) {
3497                         spin_lock(&np->lock);
3498                         /* disable interrupts on the nic */
3499                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
3500                                 writel(0, base + NvRegIrqMask);
3501                         else
3502                                 writel(np->irqmask, base + NvRegIrqMask);
3503                         pci_push(base);
3504
3505                         if (!np->in_shutdown) {
3506                                 np->nic_poll_irq = np->irqmask;
3507                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3508                         }
3509                         spin_unlock(&np->lock);
3510                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq.\n", dev->name, i);
3511                         break;
3512                 }
3513
3514         }
3515         dprintk(KERN_DEBUG "%s: nv_nic_irq_optimized completed\n", dev->name);
3516
3517         return IRQ_RETVAL(i);
3518 }
3519
3520 static irqreturn_t nv_nic_irq_tx(int foo, void *data)
3521 {
3522         struct net_device *dev = (struct net_device *) data;
3523         struct fe_priv *np = netdev_priv(dev);
3524         u8 __iomem *base = get_hwbase(dev);
3525         u32 events;
3526         int i;
3527         unsigned long flags;
3528
3529         dprintk(KERN_DEBUG "%s: nv_nic_irq_tx\n", dev->name);
3530
3531         for (i=0; ; i++) {
3532                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_TX_ALL;
3533                 writel(NVREG_IRQ_TX_ALL, base + NvRegMSIXIrqStatus);
3534                 dprintk(KERN_DEBUG "%s: tx irq: %08x\n", dev->name, events);
3535                 if (!(events & np->irqmask))
3536                         break;
3537
3538                 spin_lock_irqsave(&np->lock, flags);
3539                 nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3540                 spin_unlock_irqrestore(&np->lock, flags);
3541
3542                 if (unlikely(events & (NVREG_IRQ_TX_ERR))) {
3543                         dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
3544                                                 dev->name, events);
3545                 }
3546                 if (unlikely(i > max_interrupt_work)) {
3547                         spin_lock_irqsave(&np->lock, flags);
3548                         /* disable interrupts on the nic */
3549                         writel(NVREG_IRQ_TX_ALL, base + NvRegIrqMask);
3550                         pci_push(base);
3551
3552                         if (!np->in_shutdown) {
3553                                 np->nic_poll_irq |= NVREG_IRQ_TX_ALL;
3554                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3555                         }
3556                         spin_unlock_irqrestore(&np->lock, flags);
3557                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_tx.\n", dev->name, i);
3558                         break;
3559                 }
3560
3561         }
3562         dprintk(KERN_DEBUG "%s: nv_nic_irq_tx completed\n", dev->name);
3563
3564         return IRQ_RETVAL(i);
3565 }
3566
3567 #ifdef CONFIG_FORCEDETH_NAPI
3568 static int nv_napi_poll(struct napi_struct *napi, int budget)
3569 {
3570         struct fe_priv *np = container_of(napi, struct fe_priv, napi);
3571         struct net_device *dev = np->dev;
3572         u8 __iomem *base = get_hwbase(dev);
3573         unsigned long flags;
3574         int pkts, retcode;
3575
3576         if (!nv_optimized(np)) {
3577                 pkts = nv_rx_process(dev, budget);
3578                 retcode = nv_alloc_rx(dev);
3579         } else {
3580                 pkts = nv_rx_process_optimized(dev, budget);
3581                 retcode = nv_alloc_rx_optimized(dev);
3582         }
3583
3584         if (retcode) {
3585                 spin_lock_irqsave(&np->lock, flags);
3586                 if (!np->in_shutdown)
3587                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3588                 spin_unlock_irqrestore(&np->lock, flags);
3589         }
3590
3591         if (pkts < budget) {
3592                 /* re-enable receive interrupts */
3593                 spin_lock_irqsave(&np->lock, flags);
3594
3595                 __netif_rx_complete(dev, napi);
3596
3597                 np->irqmask |= NVREG_IRQ_RX_ALL;
3598                 if (np->msi_flags & NV_MSI_X_ENABLED)
3599                         writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3600                 else
3601                         writel(np->irqmask, base + NvRegIrqMask);
3602
3603                 spin_unlock_irqrestore(&np->lock, flags);
3604         }
3605         return pkts;
3606 }
3607 #endif
3608
3609 #ifdef CONFIG_FORCEDETH_NAPI
3610 static irqreturn_t nv_nic_irq_rx(int foo, void *data)
3611 {
3612         struct net_device *dev = (struct net_device *) data;
3613         struct fe_priv *np = netdev_priv(dev);
3614         u8 __iomem *base = get_hwbase(dev);
3615         u32 events;
3616
3617         events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
3618         writel(NVREG_IRQ_RX_ALL, base + NvRegMSIXIrqStatus);
3619
3620         if (events) {
3621                 netif_rx_schedule(dev, &np->napi);
3622                 /* disable receive interrupts on the nic */
3623                 writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3624                 pci_push(base);
3625         }
3626         return IRQ_HANDLED;
3627 }
3628 #else
3629 static irqreturn_t nv_nic_irq_rx(int foo, void *data)
3630 {
3631         struct net_device *dev = (struct net_device *) data;
3632         struct fe_priv *np = netdev_priv(dev);
3633         u8 __iomem *base = get_hwbase(dev);
3634         u32 events;
3635         int i;
3636         unsigned long flags;
3637
3638         dprintk(KERN_DEBUG "%s: nv_nic_irq_rx\n", dev->name);
3639
3640         for (i=0; ; i++) {
3641                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
3642                 writel(NVREG_IRQ_RX_ALL, base + NvRegMSIXIrqStatus);
3643                 dprintk(KERN_DEBUG "%s: rx irq: %08x\n", dev->name, events);
3644                 if (!(events & np->irqmask))
3645                         break;
3646
3647                 if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) {
3648                         if (unlikely(nv_alloc_rx_optimized(dev))) {
3649                                 spin_lock_irqsave(&np->lock, flags);
3650                                 if (!np->in_shutdown)
3651                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3652                                 spin_unlock_irqrestore(&np->lock, flags);
3653                         }
3654                 }
3655
3656                 if (unlikely(i > max_interrupt_work)) {
3657                         spin_lock_irqsave(&np->lock, flags);
3658                         /* disable interrupts on the nic */
3659                         writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3660                         pci_push(base);
3661
3662                         if (!np->in_shutdown) {
3663                                 np->nic_poll_irq |= NVREG_IRQ_RX_ALL;
3664                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3665                         }
3666                         spin_unlock_irqrestore(&np->lock, flags);
3667                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_rx.\n", dev->name, i);
3668                         break;
3669                 }
3670         }
3671         dprintk(KERN_DEBUG "%s: nv_nic_irq_rx completed\n", dev->name);
3672
3673         return IRQ_RETVAL(i);
3674 }
3675 #endif
3676
3677 static irqreturn_t nv_nic_irq_other(int foo, void *data)
3678 {
3679         struct net_device *dev = (struct net_device *) data;
3680         struct fe_priv *np = netdev_priv(dev);
3681         u8 __iomem *base = get_hwbase(dev);
3682         u32 events;
3683         int i;
3684         unsigned long flags;
3685
3686         dprintk(KERN_DEBUG "%s: nv_nic_irq_other\n", dev->name);
3687
3688         for (i=0; ; i++) {
3689                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_OTHER;
3690                 writel(NVREG_IRQ_OTHER, base + NvRegMSIXIrqStatus);
3691                 dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
3692                 if (!(events & np->irqmask))
3693                         break;
3694
3695                 /* check tx in case we reached max loop limit in tx isr */
3696                 spin_lock_irqsave(&np->lock, flags);
3697                 nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3698                 spin_unlock_irqrestore(&np->lock, flags);
3699
3700                 if (events & NVREG_IRQ_LINK) {
3701                         spin_lock_irqsave(&np->lock, flags);
3702                         nv_link_irq(dev);
3703                         spin_unlock_irqrestore(&np->lock, flags);
3704                 }
3705                 if (np->need_linktimer && time_after(jiffies, np->link_timeout)) {
3706                         spin_lock_irqsave(&np->lock, flags);
3707                         nv_linkchange(dev);
3708                         spin_unlock_irqrestore(&np->lock, flags);
3709                         np->link_timeout = jiffies + LINK_TIMEOUT;
3710                 }
3711                 if (events & NVREG_IRQ_RECOVER_ERROR) {
3712                         spin_lock_irq(&np->lock);
3713                         /* disable interrupts on the nic */
3714                         writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3715                         pci_push(base);
3716
3717                         if (!np->in_shutdown) {
3718                                 np->nic_poll_irq |= NVREG_IRQ_OTHER;
3719                                 np->recover_error = 1;
3720                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3721                         }
3722                         spin_unlock_irq(&np->lock);
3723                         break;
3724                 }
3725                 if (events & (NVREG_IRQ_UNKNOWN)) {
3726                         printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
3727                                                 dev->name, events);
3728                 }
3729                 if (unlikely(i > max_interrupt_work)) {
3730                         spin_lock_irqsave(&np->lock, flags);
3731                         /* disable interrupts on the nic */
3732                         writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3733                         pci_push(base);
3734
3735                         if (!np->in_shutdown) {
3736                                 np->nic_poll_irq |= NVREG_IRQ_OTHER;
3737                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3738                         }
3739                         spin_unlock_irqrestore(&np->lock, flags);
3740                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_other.\n", dev->name, i);
3741                         break;
3742                 }
3743
3744         }
3745         dprintk(KERN_DEBUG "%s: nv_nic_irq_other completed\n", dev->name);
3746
3747         return IRQ_RETVAL(i);
3748 }
3749
3750 static irqreturn_t nv_nic_irq_test(int foo, void *data)
3751 {
3752         struct net_device *dev = (struct net_device *) data;
3753         struct fe_priv *np = netdev_priv(dev);
3754         u8 __iomem *base = get_hwbase(dev);
3755         u32 events;
3756
3757         dprintk(KERN_DEBUG "%s: nv_nic_irq_test\n", dev->name);
3758
3759         if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3760                 events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
3761                 writel(NVREG_IRQ_TIMER, base + NvRegIrqStatus);
3762         } else {
3763                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
3764                 writel(NVREG_IRQ_TIMER, base + NvRegMSIXIrqStatus);
3765         }
3766         pci_push(base);
3767         dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
3768         if (!(events & NVREG_IRQ_TIMER))
3769                 return IRQ_RETVAL(0);
3770
3771         nv_msi_workaround(np);
3772
3773         spin_lock(&np->lock);
3774         np->intr_test = 1;
3775         spin_unlock(&np->lock);
3776
3777         dprintk(KERN_DEBUG "%s: nv_nic_irq_test completed\n", dev->name);
3778
3779         return IRQ_RETVAL(1);
3780 }
3781
3782 static void set_msix_vector_map(struct net_device *dev, u32 vector, u32 irqmask)
3783 {
3784         u8 __iomem *base = get_hwbase(dev);
3785         int i;
3786         u32 msixmap = 0;
3787
3788         /* Each interrupt bit can be mapped to a MSIX vector (4 bits).
3789          * MSIXMap0 represents the first 8 interrupts and MSIXMap1 represents
3790          * the remaining 8 interrupts.
3791          */
3792         for (i = 0; i < 8; i++) {
3793                 if ((irqmask >> i) & 0x1) {
3794                         msixmap |= vector << (i << 2);
3795                 }
3796         }
3797         writel(readl(base + NvRegMSIXMap0) | msixmap, base + NvRegMSIXMap0);
3798
3799         msixmap = 0;
3800         for (i = 0; i < 8; i++) {
3801                 if ((irqmask >> (i + 8)) & 0x1) {
3802                         msixmap |= vector << (i << 2);
3803                 }
3804         }
3805         writel(readl(base + NvRegMSIXMap1) | msixmap, base + NvRegMSIXMap1);
3806 }
3807
3808 static int nv_request_irq(struct net_device *dev, int intr_test)
3809 {
3810         struct fe_priv *np = get_nvpriv(dev);
3811         u8 __iomem *base = get_hwbase(dev);
3812         int ret = 1;
3813         int i;
3814         irqreturn_t (*handler)(int foo, void *data);
3815
3816         if (intr_test) {
3817                 handler = nv_nic_irq_test;
3818         } else {
3819                 if (nv_optimized(np))
3820                         handler = nv_nic_irq_optimized;
3821                 else
3822                         handler = nv_nic_irq;
3823         }
3824
3825         if (np->msi_flags & NV_MSI_X_CAPABLE) {
3826                 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++) {
3827                         np->msi_x_entry[i].entry = i;
3828                 }
3829                 if ((ret = pci_enable_msix(np->pci_dev, np->msi_x_entry, (np->msi_flags & NV_MSI_X_VECTORS_MASK))) == 0) {
3830                         np->msi_flags |= NV_MSI_X_ENABLED;
3831                         if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT && !intr_test) {
3832                                 /* Request irq for rx handling */
3833                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, &nv_nic_irq_rx, IRQF_SHARED, dev->name, dev) != 0) {
3834                                         printk(KERN_INFO "forcedeth: request_irq failed for rx %d\n", ret);
3835                                         pci_disable_msix(np->pci_dev);
3836                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3837                                         goto out_err;
3838                                 }
3839                                 /* Request irq for tx handling */
3840                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, &nv_nic_irq_tx, IRQF_SHARED, dev->name, dev) != 0) {
3841                                         printk(KERN_INFO "forcedeth: request_irq failed for tx %d\n", ret);
3842                                         pci_disable_msix(np->pci_dev);
3843                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3844                                         goto out_free_rx;
3845                                 }
3846                                 /* Request irq for link and timer handling */
3847                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector, &nv_nic_irq_other, IRQF_SHARED, dev->name, dev) != 0) {
3848                                         printk(KERN_INFO "forcedeth: request_irq failed for link %d\n", ret);
3849                                         pci_disable_msix(np->pci_dev);
3850                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3851                                         goto out_free_tx;
3852                                 }
3853                                 /* map interrupts to their respective vector */
3854                                 writel(0, base + NvRegMSIXMap0);
3855                                 writel(0, base + NvRegMSIXMap1);
3856                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_RX, NVREG_IRQ_RX_ALL);
3857                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_TX, NVREG_IRQ_TX_ALL);
3858                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_OTHER, NVREG_IRQ_OTHER);
3859                         } else {
3860                                 /* Request irq for all interrupts */
3861                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector, handler, IRQF_SHARED, dev->name, dev) != 0) {
3862                                         printk(KERN_INFO "forcedeth: request_irq failed %d\n", ret);
3863                                         pci_disable_msix(np->pci_dev);
3864                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3865                                         goto out_err;
3866                                 }
3867
3868                                 /* map interrupts to vector 0 */
3869                                 writel(0, base + NvRegMSIXMap0);
3870                                 writel(0, base + NvRegMSIXMap1);
3871                         }
3872                 }
3873         }
3874         if (ret != 0 && np->msi_flags & NV_MSI_CAPABLE) {
3875                 if ((ret = pci_enable_msi(np->pci_dev)) == 0) {
3876                         np->msi_flags |= NV_MSI_ENABLED;
3877                         dev->irq = np->pci_dev->irq;
3878                         if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0) {
3879                                 printk(KERN_INFO "forcedeth: request_irq failed %d\n", ret);
3880                                 pci_disable_msi(np->pci_dev);
3881                                 np->msi_flags &= ~NV_MSI_ENABLED;
3882                                 dev->irq = np->pci_dev->irq;
3883                                 goto out_err;
3884                         }
3885
3886                         /* map interrupts to vector 0 */
3887                         writel(0, base + NvRegMSIMap0);
3888                         writel(0, base + NvRegMSIMap1);
3889                         /* enable msi vector 0 */
3890                         writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
3891                 }
3892         }
3893         if (ret != 0) {
3894                 if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0)
3895                         goto out_err;
3896
3897         }
3898
3899         return 0;
3900 out_free_tx:
3901         free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, dev);
3902 out_free_rx:
3903         free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, dev);
3904 out_err:
3905         return 1;
3906 }
3907
3908 static void nv_free_irq(struct net_device *dev)
3909 {
3910         struct fe_priv *np = get_nvpriv(dev);
3911         int i;
3912
3913         if (np->msi_flags & NV_MSI_X_ENABLED) {
3914                 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++) {
3915                         free_irq(np->msi_x_entry[i].vector, dev);
3916                 }
3917                 pci_disable_msix(np->pci_dev);
3918                 np->msi_flags &= ~NV_MSI_X_ENABLED;
3919         } else {
3920                 free_irq(np->pci_dev->irq, dev);
3921                 if (np->msi_flags & NV_MSI_ENABLED) {
3922                         pci_disable_msi(np->pci_dev);
3923                         np->msi_flags &= ~NV_MSI_ENABLED;
3924                 }
3925         }
3926 }
3927
3928 static void nv_do_nic_poll(unsigned long data)
3929 {
3930         struct net_device *dev = (struct net_device *) data;
3931         struct fe_priv *np = netdev_priv(dev);
3932         u8 __iomem *base = get_hwbase(dev);
3933         u32 mask = 0;
3934
3935         /*
3936          * First disable irq(s) and then
3937          * reenable interrupts on the nic, we have to do this before calling
3938          * nv_nic_irq because that may decide to do otherwise
3939          */
3940
3941         if (!using_multi_irqs(dev)) {
3942                 if (np->msi_flags & NV_MSI_X_ENABLED)
3943                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
3944                 else
3945                         disable_irq_lockdep(np->pci_dev->irq);
3946                 mask = np->irqmask;
3947         } else {
3948                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
3949                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
3950                         mask |= NVREG_IRQ_RX_ALL;
3951                 }
3952                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
3953                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
3954                         mask |= NVREG_IRQ_TX_ALL;
3955                 }
3956                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
3957                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
3958                         mask |= NVREG_IRQ_OTHER;
3959                 }
3960         }
3961         np->nic_poll_irq = 0;
3962
3963         /* disable_irq() contains synchronize_irq, thus no irq handler can run now */
3964
3965         if (np->recover_error) {
3966                 np->recover_error = 0;
3967                 printk(KERN_INFO "forcedeth: MAC in recoverable error state\n");
3968                 if (netif_running(dev)) {
3969                         netif_tx_lock_bh(dev);
3970                         spin_lock(&np->lock);
3971                         /* stop engines */
3972                         nv_stop_rxtx(dev);
3973                         nv_txrx_reset(dev);
3974                         /* drain rx queue */
3975                         nv_drain_rxtx(dev);
3976                         /* reinit driver view of the rx queue */
3977                         set_bufsize(dev);
3978                         if (nv_init_ring(dev)) {
3979                                 if (!np->in_shutdown)
3980                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3981                         }
3982                         /* reinit nic view of the rx queue */
3983                         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
3984                         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
3985                         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
3986                                 base + NvRegRingSizes);
3987                         pci_push(base);
3988                         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
3989                         pci_push(base);
3990
3991                         /* restart rx engine */
3992                         nv_start_rxtx(dev);
3993                         spin_unlock(&np->lock);
3994                         netif_tx_unlock_bh(dev);
3995                 }
3996         }
3997
3998
3999         writel(mask, base + NvRegIrqMask);
4000         pci_push(base);
4001
4002         if (!using_multi_irqs(dev)) {
4003                 if (nv_optimized(np))
4004                         nv_nic_irq_optimized(0, dev);
4005                 else
4006                         nv_nic_irq(0, dev);
4007                 if (np->msi_flags & NV_MSI_X_ENABLED)
4008                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
4009                 else
4010                         enable_irq_lockdep(np->pci_dev->irq);
4011         } else {
4012                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
4013                         nv_nic_irq_rx(0, dev);
4014                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
4015                 }
4016                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
4017                         nv_nic_irq_tx(0, dev);
4018                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
4019                 }
4020                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
4021                         nv_nic_irq_other(0, dev);
4022                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
4023                 }
4024         }
4025 }
4026
4027 #ifdef CONFIG_NET_POLL_CONTROLLER
4028 static void nv_poll_controller(struct net_device *dev)
4029 {
4030         nv_do_nic_poll((unsigned long) dev);
4031 }
4032 #endif
4033
4034 static void nv_do_stats_poll(unsigned long data)
4035 {
4036         struct net_device *dev = (struct net_device *) data;
4037         struct fe_priv *np = netdev_priv(dev);
4038
4039         nv_get_hw_stats(dev);
4040
4041         if (!np->in_shutdown)
4042                 mod_timer(&np->stats_poll,
4043                         round_jiffies(jiffies + STATS_INTERVAL));
4044 }
4045
4046 static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
4047 {
4048         struct fe_priv *np = netdev_priv(dev);
4049         strcpy(info->driver, DRV_NAME);
4050         strcpy(info->version, FORCEDETH_VERSION);
4051         strcpy(info->bus_info, pci_name(np->pci_dev));
4052 }
4053
4054 static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4055 {
4056         struct fe_priv *np = netdev_priv(dev);
4057         wolinfo->supported = WAKE_MAGIC;
4058
4059         spin_lock_irq(&np->lock);
4060         if (np->wolenabled)
4061                 wolinfo->wolopts = WAKE_MAGIC;
4062         spin_unlock_irq(&np->lock);
4063 }
4064
4065 static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4066 {
4067         struct fe_priv *np = netdev_priv(dev);
4068         u8 __iomem *base = get_hwbase(dev);
4069         u32 flags = 0;
4070
4071         if (wolinfo->wolopts == 0) {
4072                 np->wolenabled = 0;
4073         } else if (wolinfo->wolopts & WAKE_MAGIC) {
4074                 np->wolenabled = 1;
4075                 flags = NVREG_WAKEUPFLAGS_ENABLE;
4076         }
4077         if (netif_running(dev)) {
4078                 spin_lock_irq(&np->lock);
4079                 writel(flags, base + NvRegWakeUpFlags);
4080                 spin_unlock_irq(&np->lock);
4081         }
4082         return 0;
4083 }
4084
4085 static int nv_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
4086 {
4087         struct fe_priv *np = netdev_priv(dev);
4088         int adv;
4089
4090         spin_lock_irq(&np->lock);
4091         ecmd->port = PORT_MII;
4092         if (!netif_running(dev)) {
4093                 /* We do not track link speed / duplex setting if the
4094                  * interface is disabled. Force a link check */
4095                 if (nv_update_linkspeed(dev)) {
4096                         if (!netif_carrier_ok(dev))
4097                                 netif_carrier_on(dev);
4098                 } else {
4099                         if (netif_carrier_ok(dev))
4100                                 netif_carrier_off(dev);
4101                 }
4102         }
4103
4104         if (netif_carrier_ok(dev)) {
4105                 switch(np->linkspeed & (NVREG_LINKSPEED_MASK)) {
4106                 case NVREG_LINKSPEED_10:
4107                         ecmd->speed = SPEED_10;
4108                         break;
4109                 case NVREG_LINKSPEED_100:
4110                         ecmd->speed = SPEED_100;
4111                         break;
4112                 case NVREG_LINKSPEED_1000:
4113                         ecmd->speed = SPEED_1000;
4114                         break;
4115                 }
4116                 ecmd->duplex = DUPLEX_HALF;
4117                 if (np->duplex)
4118                         ecmd->duplex = DUPLEX_FULL;
4119         } else {
4120                 ecmd->speed = -1;
4121                 ecmd->duplex = -1;
4122         }
4123
4124         ecmd->autoneg = np->autoneg;
4125
4126         ecmd->advertising = ADVERTISED_MII;
4127         if (np->autoneg) {
4128                 ecmd->advertising |= ADVERTISED_Autoneg;
4129                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4130                 if (adv & ADVERTISE_10HALF)
4131                         ecmd->advertising |= ADVERTISED_10baseT_Half;
4132                 if (adv & ADVERTISE_10FULL)
4133                         ecmd->advertising |= ADVERTISED_10baseT_Full;
4134                 if (adv & ADVERTISE_100HALF)
4135                         ecmd->advertising |= ADVERTISED_100baseT_Half;
4136                 if (adv & ADVERTISE_100FULL)
4137                         ecmd->advertising |= ADVERTISED_100baseT_Full;
4138                 if (np->gigabit == PHY_GIGABIT) {
4139                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4140                         if (adv & ADVERTISE_1000FULL)
4141                                 ecmd->advertising |= ADVERTISED_1000baseT_Full;
4142                 }
4143         }
4144         ecmd->supported = (SUPPORTED_Autoneg |
4145                 SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
4146                 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
4147                 SUPPORTED_MII);
4148         if (np->gigabit == PHY_GIGABIT)
4149                 ecmd->supported |= SUPPORTED_1000baseT_Full;
4150
4151         ecmd->phy_address = np->phyaddr;
4152         ecmd->transceiver = XCVR_EXTERNAL;
4153
4154         /* ignore maxtxpkt, maxrxpkt for now */
4155         spin_unlock_irq(&np->lock);
4156         return 0;
4157 }
4158
4159 static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
4160 {
4161         struct fe_priv *np = netdev_priv(dev);
4162
4163         if (ecmd->port != PORT_MII)
4164                 return -EINVAL;
4165         if (ecmd->transceiver != XCVR_EXTERNAL)
4166                 return -EINVAL;
4167         if (ecmd->phy_address != np->phyaddr) {
4168                 /* TODO: support switching between multiple phys. Should be
4169                  * trivial, but not enabled due to lack of test hardware. */
4170                 return -EINVAL;
4171         }
4172         if (ecmd->autoneg == AUTONEG_ENABLE) {
4173                 u32 mask;
4174
4175                 mask = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
4176                           ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
4177                 if (np->gigabit == PHY_GIGABIT)
4178                         mask |= ADVERTISED_1000baseT_Full;
4179
4180                 if ((ecmd->advertising & mask) == 0)
4181                         return -EINVAL;
4182
4183         } else if (ecmd->autoneg == AUTONEG_DISABLE) {
4184                 /* Note: autonegotiation disable, speed 1000 intentionally
4185                  * forbidden - noone should need that. */
4186
4187                 if (ecmd->speed != SPEED_10 && ecmd->speed != SPEED_100)
4188                         return -EINVAL;
4189                 if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
4190                         return -EINVAL;
4191         } else {
4192                 return -EINVAL;
4193         }
4194
4195         netif_carrier_off(dev);
4196         if (netif_running(dev)) {
4197                 unsigned long flags;
4198
4199                 nv_disable_irq(dev);
4200                 netif_tx_lock_bh(dev);
4201                 /* with plain spinlock lockdep complains */
4202                 spin_lock_irqsave(&np->lock, flags);
4203                 /* stop engines */
4204                 /* FIXME:
4205                  * this can take some time, and interrupts are disabled
4206                  * due to spin_lock_irqsave, but let's hope no daemon
4207                  * is going to change the settings very often...
4208                  * Worst case:
4209                  * NV_RXSTOP_DELAY1MAX + NV_TXSTOP_DELAY1MAX
4210                  * + some minor delays, which is up to a second approximately
4211                  */
4212                 nv_stop_rxtx(dev);
4213                 spin_unlock_irqrestore(&np->lock, flags);
4214                 netif_tx_unlock_bh(dev);
4215         }
4216
4217         if (ecmd->autoneg == AUTONEG_ENABLE) {
4218                 int adv, bmcr;
4219
4220                 np->autoneg = 1;
4221
4222                 /* advertise only what has been requested */
4223                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4224                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4225                 if (ecmd->advertising & ADVERTISED_10baseT_Half)
4226                         adv |= ADVERTISE_10HALF;
4227                 if (ecmd->advertising & ADVERTISED_10baseT_Full)
4228                         adv |= ADVERTISE_10FULL;
4229                 if (ecmd->advertising & ADVERTISED_100baseT_Half)
4230                         adv |= ADVERTISE_100HALF;
4231                 if (ecmd->advertising & ADVERTISED_100baseT_Full)
4232                         adv |= ADVERTISE_100FULL;
4233                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ)  /* for rx we set both advertisments but disable tx pause */
4234                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4235                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4236                         adv |=  ADVERTISE_PAUSE_ASYM;
4237                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4238
4239                 if (np->gigabit == PHY_GIGABIT) {
4240                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4241                         adv &= ~ADVERTISE_1000FULL;
4242                         if (ecmd->advertising & ADVERTISED_1000baseT_Full)
4243                                 adv |= ADVERTISE_1000FULL;
4244                         mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4245                 }
4246
4247                 if (netif_running(dev))
4248                         printk(KERN_INFO "%s: link down.\n", dev->name);
4249                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4250                 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4251                         bmcr |= BMCR_ANENABLE;
4252                         /* reset the phy in order for settings to stick,
4253                          * and cause autoneg to start */
4254                         if (phy_reset(dev, bmcr)) {
4255                                 printk(KERN_INFO "%s: phy reset failed\n", dev->name);
4256                                 return -EINVAL;
4257                         }
4258                 } else {
4259                         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4260                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4261                 }
4262         } else {
4263                 int adv, bmcr;
4264
4265                 np->autoneg = 0;
4266
4267                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4268                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4269                 if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_HALF)
4270                         adv |= ADVERTISE_10HALF;
4271                 if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_FULL)
4272                         adv |= ADVERTISE_10FULL;
4273                 if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_HALF)
4274                         adv |= ADVERTISE_100HALF;
4275                 if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_FULL)
4276                         adv |= ADVERTISE_100FULL;
4277                 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4278                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) {/* for rx we set both advertisments but disable tx pause */
4279                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4280                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4281                 }
4282                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ) {
4283                         adv |=  ADVERTISE_PAUSE_ASYM;
4284                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4285                 }
4286                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4287                 np->fixed_mode = adv;
4288
4289                 if (np->gigabit == PHY_GIGABIT) {
4290                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4291                         adv &= ~ADVERTISE_1000FULL;
4292                         mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4293                 }
4294
4295                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4296                 bmcr &= ~(BMCR_ANENABLE|BMCR_SPEED100|BMCR_SPEED1000|BMCR_FULLDPLX);
4297                 if (np->fixed_mode & (ADVERTISE_10FULL|ADVERTISE_100FULL))
4298                         bmcr |= BMCR_FULLDPLX;
4299                 if (np->fixed_mode & (ADVERTISE_100HALF|ADVERTISE_100FULL))
4300                         bmcr |= BMCR_SPEED100;
4301                 if (np->phy_oui == PHY_OUI_MARVELL) {
4302                         /* reset the phy in order for forced mode settings to stick */
4303                         if (phy_reset(dev, bmcr)) {
4304                                 printk(KERN_INFO "%s: phy reset failed\n", dev->name);
4305                                 return -EINVAL;
4306                         }
4307                 } else {
4308                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4309                         if (netif_running(dev)) {
4310                                 /* Wait a bit and then reconfigure the nic. */
4311                                 udelay(10);
4312                                 nv_linkchange(dev);
4313                         }
4314                 }
4315         }
4316
4317         if (netif_running(dev)) {
4318                 nv_start_rxtx(dev);
4319                 nv_enable_irq(dev);
4320         }
4321
4322         return 0;
4323 }
4324
4325 #define FORCEDETH_REGS_VER      1
4326
4327 static int nv_get_regs_len(struct net_device *dev)
4328 {
4329         struct fe_priv *np = netdev_priv(dev);
4330         return np->register_size;
4331 }
4332
4333 static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
4334 {
4335         struct fe_priv *np = netdev_priv(dev);
4336         u8 __iomem *base = get_hwbase(dev);
4337         u32 *rbuf = buf;
4338         int i;
4339
4340         regs->version = FORCEDETH_REGS_VER;
4341         spin_lock_irq(&np->lock);
4342         for (i = 0;i <= np->register_size/sizeof(u32); i++)
4343                 rbuf[i] = readl(base + i*sizeof(u32));
4344         spin_unlock_irq(&np->lock);
4345 }
4346
4347 static int nv_nway_reset(struct net_device *dev)
4348 {
4349         struct fe_priv *np = netdev_priv(dev);
4350         int ret;
4351
4352         if (np->autoneg) {
4353                 int bmcr;
4354
4355                 netif_carrier_off(dev);
4356                 if (netif_running(dev)) {
4357                         nv_disable_irq(dev);
4358                         netif_tx_lock_bh(dev);
4359                         spin_lock(&np->lock);
4360                         /* stop engines */
4361                         nv_stop_rxtx(dev);
4362                         spin_unlock(&np->lock);
4363                         netif_tx_unlock_bh(dev);
4364                         printk(KERN_INFO "%s: link down.\n", dev->name);
4365                 }
4366
4367                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4368                 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4369                         bmcr |= BMCR_ANENABLE;
4370                         /* reset the phy in order for settings to stick*/
4371                         if (phy_reset(dev, bmcr)) {
4372                                 printk(KERN_INFO "%s: phy reset failed\n", dev->name);
4373                                 return -EINVAL;
4374                         }
4375                 } else {
4376                         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4377                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4378                 }
4379
4380                 if (netif_running(dev)) {
4381                         nv_start_rxtx(dev);
4382                         nv_enable_irq(dev);
4383                 }
4384                 ret = 0;
4385         } else {
4386                 ret = -EINVAL;
4387         }
4388
4389         return ret;
4390 }
4391
4392 static int nv_set_tso(struct net_device *dev, u32 value)
4393 {
4394         struct fe_priv *np = netdev_priv(dev);
4395
4396         if ((np->driver_data & DEV_HAS_CHECKSUM))
4397                 return ethtool_op_set_tso(dev, value);
4398         else
4399                 return -EOPNOTSUPP;
4400 }
4401
4402 static void nv_get_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4403 {
4404         struct fe_priv *np = netdev_priv(dev);
4405
4406         ring->rx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4407         ring->rx_mini_max_pending = 0;
4408         ring->rx_jumbo_max_pending = 0;
4409         ring->tx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4410
4411         ring->rx_pending = np->rx_ring_size;
4412         ring->rx_mini_pending = 0;
4413         ring->rx_jumbo_pending = 0;
4414         ring->tx_pending = np->tx_ring_size;
4415 }
4416
4417 static int nv_set_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4418 {
4419         struct fe_priv *np = netdev_priv(dev);
4420         u8 __iomem *base = get_hwbase(dev);
4421         u8 *rxtx_ring, *rx_skbuff, *tx_skbuff;
4422         dma_addr_t ring_addr;
4423
4424         if (ring->rx_pending < RX_RING_MIN ||
4425             ring->tx_pending < TX_RING_MIN ||
4426             ring->rx_mini_pending != 0 ||
4427             ring->rx_jumbo_pending != 0 ||
4428             (np->desc_ver == DESC_VER_1 &&
4429              (ring->rx_pending > RING_MAX_DESC_VER_1 ||
4430               ring->tx_pending > RING_MAX_DESC_VER_1)) ||
4431             (np->desc_ver != DESC_VER_1 &&
4432              (ring->rx_pending > RING_MAX_DESC_VER_2_3 ||
4433               ring->tx_pending > RING_MAX_DESC_VER_2_3))) {
4434                 return -EINVAL;
4435         }
4436
4437         /* allocate new rings */
4438         if (!nv_optimized(np)) {
4439                 rxtx_ring = pci_alloc_consistent(np->pci_dev,
4440                                             sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4441                                             &ring_addr);
4442         } else {
4443                 rxtx_ring = pci_alloc_consistent(np->pci_dev,
4444                                             sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4445                                             &ring_addr);
4446         }
4447         rx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->rx_pending, GFP_KERNEL);
4448         tx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->tx_pending, GFP_KERNEL);
4449         if (!rxtx_ring || !rx_skbuff || !tx_skbuff) {
4450                 /* fall back to old rings */
4451                 if (!nv_optimized(np)) {
4452                         if (rxtx_ring)
4453                                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4454                                                     rxtx_ring, ring_addr);
4455                 } else {
4456                         if (rxtx_ring)
4457                                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4458                                                     rxtx_ring, ring_addr);
4459                 }
4460                 if (rx_skbuff)
4461                         kfree(rx_skbuff);
4462                 if (tx_skbuff)
4463                         kfree(tx_skbuff);
4464                 goto exit;
4465         }
4466
4467         if (netif_running(dev)) {
4468                 nv_disable_irq(dev);
4469                 netif_tx_lock_bh(dev);
4470                 spin_lock(&np->lock);
4471                 /* stop engines */
4472                 nv_stop_rxtx(dev);
4473                 nv_txrx_reset(dev);
4474                 /* drain queues */
4475                 nv_drain_rxtx(dev);
4476                 /* delete queues */
4477                 free_rings(dev);
4478         }
4479
4480         /* set new values */
4481         np->rx_ring_size = ring->rx_pending;
4482         np->tx_ring_size = ring->tx_pending;
4483
4484         if (!nv_optimized(np)) {
4485                 np->rx_ring.orig = (struct ring_desc*)rxtx_ring;
4486                 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
4487         } else {
4488                 np->rx_ring.ex = (struct ring_desc_ex*)rxtx_ring;
4489                 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
4490         }
4491         np->rx_skb = (struct nv_skb_map*)rx_skbuff;
4492         np->tx_skb = (struct nv_skb_map*)tx_skbuff;
4493         np->ring_addr = ring_addr;
4494
4495         memset(np->rx_skb, 0, sizeof(struct nv_skb_map) * np->rx_ring_size);
4496         memset(np->tx_skb, 0, sizeof(struct nv_skb_map) * np->tx_ring_size);
4497
4498         if (netif_running(dev)) {
4499                 /* reinit driver view of the queues */
4500                 set_bufsize(dev);
4501                 if (nv_init_ring(dev)) {
4502                         if (!np->in_shutdown)
4503                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4504                 }
4505
4506                 /* reinit nic view of the queues */
4507                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4508                 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4509                 writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4510                         base + NvRegRingSizes);
4511                 pci_push(base);
4512                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4513                 pci_push(base);
4514
4515                 /* restart engines */
4516                 nv_start_rxtx(dev);
4517                 spin_unlock(&np->lock);
4518                 netif_tx_unlock_bh(dev);
4519                 nv_enable_irq(dev);
4520         }
4521         return 0;
4522 exit:
4523         return -ENOMEM;
4524 }
4525
4526 static void nv_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4527 {
4528         struct fe_priv *np = netdev_priv(dev);
4529
4530         pause->autoneg = (np->pause_flags & NV_PAUSEFRAME_AUTONEG) != 0;
4531         pause->rx_pause = (np->pause_flags & NV_PAUSEFRAME_RX_ENABLE) != 0;
4532         pause->tx_pause = (np->pause_flags & NV_PAUSEFRAME_TX_ENABLE) != 0;
4533 }
4534
4535 static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4536 {
4537         struct fe_priv *np = netdev_priv(dev);
4538         int adv, bmcr;
4539
4540         if ((!np->autoneg && np->duplex == 0) ||
4541             (np->autoneg && !pause->autoneg && np->duplex == 0)) {
4542                 printk(KERN_INFO "%s: can not set pause settings when forced link is in half duplex.\n",
4543                        dev->name);
4544                 return -EINVAL;
4545         }
4546         if (pause->tx_pause && !(np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)) {
4547                 printk(KERN_INFO "%s: hardware does not support tx pause frames.\n", dev->name);
4548                 return -EINVAL;
4549         }
4550
4551         netif_carrier_off(dev);
4552         if (netif_running(dev)) {
4553                 nv_disable_irq(dev);
4554                 netif_tx_lock_bh(dev);
4555                 spin_lock(&np->lock);
4556                 /* stop engines */
4557                 nv_stop_rxtx(dev);
4558                 spin_unlock(&np->lock);
4559                 netif_tx_unlock_bh(dev);
4560         }
4561
4562         np->pause_flags &= ~(NV_PAUSEFRAME_RX_REQ|NV_PAUSEFRAME_TX_REQ);
4563         if (pause->rx_pause)
4564                 np->pause_flags |= NV_PAUSEFRAME_RX_REQ;
4565         if (pause->tx_pause)
4566                 np->pause_flags |= NV_PAUSEFRAME_TX_REQ;
4567
4568         if (np->autoneg && pause->autoneg) {
4569                 np->pause_flags |= NV_PAUSEFRAME_AUTONEG;
4570
4571                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4572                 adv &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4573                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisments but disable tx pause */
4574                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4575                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4576                         adv |=  ADVERTISE_PAUSE_ASYM;
4577                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4578
4579                 if (netif_running(dev))
4580                         printk(KERN_INFO "%s: link down.\n", dev->name);
4581                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4582                 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4583                 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4584         } else {
4585                 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4586                 if (pause->rx_pause)
4587                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4588                 if (pause->tx_pause)
4589                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4590
4591                 if (!netif_running(dev))
4592                         nv_update_linkspeed(dev);
4593                 else
4594                         nv_update_pause(dev, np->pause_flags);
4595         }
4596
4597         if (netif_running(dev)) {
4598                 nv_start_rxtx(dev);
4599                 nv_enable_irq(dev);
4600         }
4601         return 0;
4602 }
4603
4604 static u32 nv_get_rx_csum(struct net_device *dev)
4605 {
4606         struct fe_priv *np = netdev_priv(dev);
4607         return (np->rx_csum) != 0;
4608 }
4609
4610 static int nv_set_rx_csum(struct net_device *dev, u32 data)
4611 {
4612         struct fe_priv *np = netdev_priv(dev);
4613         u8 __iomem *base = get_hwbase(dev);
4614         int retcode = 0;
4615
4616         if (np->driver_data & DEV_HAS_CHECKSUM) {
4617                 if (data) {
4618                         np->rx_csum = 1;
4619                         np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
4620                 } else {
4621                         np->rx_csum = 0;
4622                         /* vlan is dependent on rx checksum offload */
4623                         if (!(np->vlanctl_bits & NVREG_VLANCONTROL_ENABLE))
4624                                 np->txrxctl_bits &= ~NVREG_TXRXCTL_RXCHECK;
4625                 }
4626                 if (netif_running(dev)) {
4627                         spin_lock_irq(&np->lock);
4628                         writel(np->txrxctl_bits, base + NvRegTxRxControl);
4629                         spin_unlock_irq(&np->lock);
4630                 }
4631         } else {
4632                 return -EINVAL;
4633         }
4634
4635         return retcode;
4636 }
4637
4638 static int nv_set_tx_csum(struct net_device *dev, u32 data)
4639 {
4640         struct fe_priv *np = netdev_priv(dev);
4641
4642         if (np->driver_data & DEV_HAS_CHECKSUM)
4643                 return ethtool_op_set_tx_hw_csum(dev, data);
4644         else
4645                 return -EOPNOTSUPP;
4646 }
4647
4648 static int nv_set_sg(struct net_device *dev, u32 data)
4649 {
4650         struct fe_priv *np = netdev_priv(dev);
4651
4652         if (np->driver_data & DEV_HAS_CHECKSUM)
4653                 return ethtool_op_set_sg(dev, data);
4654         else
4655                 return -EOPNOTSUPP;
4656 }
4657
4658 static int nv_get_sset_count(struct net_device *dev, int sset)
4659 {
4660         struct fe_priv *np = netdev_priv(dev);
4661
4662         switch (sset) {
4663         case ETH_SS_TEST:
4664                 if (np->driver_data & DEV_HAS_TEST_EXTENDED)
4665                         return NV_TEST_COUNT_EXTENDED;
4666                 else
4667                         return NV_TEST_COUNT_BASE;
4668         case ETH_SS_STATS:
4669                 if (np->driver_data & DEV_HAS_STATISTICS_V1)
4670                         return NV_DEV_STATISTICS_V1_COUNT;
4671                 else if (np->driver_data & DEV_HAS_STATISTICS_V2)
4672                         return NV_DEV_STATISTICS_V2_COUNT;
4673                 else
4674                         return 0;
4675         default:
4676                 return -EOPNOTSUPP;
4677         }
4678 }
4679
4680 static void nv_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *buffer)
4681 {
4682         struct fe_priv *np = netdev_priv(dev);
4683
4684         /* update stats */
4685         nv_do_stats_poll((unsigned long)dev);
4686
4687         memcpy(buffer, &np->estats, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(u64));
4688 }
4689
4690 static int nv_link_test(struct net_device *dev)
4691 {
4692         struct fe_priv *np = netdev_priv(dev);
4693         int mii_status;
4694
4695         mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4696         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4697
4698         /* check phy link status */
4699         if (!(mii_status & BMSR_LSTATUS))
4700                 return 0;
4701         else
4702                 return 1;
4703 }
4704
4705 static int nv_register_test(struct net_device *dev)
4706 {
4707         u8 __iomem *base = get_hwbase(dev);
4708         int i = 0;
4709         u32 orig_read, new_read;
4710
4711         do {
4712                 orig_read = readl(base + nv_registers_test[i].reg);
4713
4714                 /* xor with mask to toggle bits */
4715                 orig_read ^= nv_registers_test[i].mask;
4716
4717                 writel(orig_read, base + nv_registers_test[i].reg);
4718
4719                 new_read = readl(base + nv_registers_test[i].reg);
4720
4721                 if ((new_read & nv_registers_test[i].mask) != (orig_read & nv_registers_test[i].mask))
4722                         return 0;
4723
4724                 /* restore original value */
4725                 orig_read ^= nv_registers_test[i].mask;
4726                 writel(orig_read, base + nv_registers_test[i].reg);
4727
4728         } while (nv_registers_test[++i].reg != 0);
4729
4730         return 1;
4731 }
4732
4733 static int nv_interrupt_test(struct net_device *dev)
4734 {
4735         struct fe_priv *np = netdev_priv(dev);
4736         u8 __iomem *base = get_hwbase(dev);
4737         int ret = 1;
4738         int testcnt;
4739         u32 save_msi_flags, save_poll_interval = 0;
4740
4741         if (netif_running(dev)) {
4742                 /* free current irq */
4743                 nv_free_irq(dev);
4744                 save_poll_interval = readl(base+NvRegPollingInterval);
4745         }
4746
4747         /* flag to test interrupt handler */
4748         np->intr_test = 0;
4749
4750         /* setup test irq */
4751         save_msi_flags = np->msi_flags;
4752         np->msi_flags &= ~NV_MSI_X_VECTORS_MASK;
4753         np->msi_flags |= 0x001; /* setup 1 vector */
4754         if (nv_request_irq(dev, 1))
4755                 return 0;
4756
4757         /* setup timer interrupt */
4758         writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
4759         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4760
4761         nv_enable_hw_interrupts(dev, NVREG_IRQ_TIMER);
4762
4763         /* wait for at least one interrupt */
4764         msleep(100);
4765
4766         spin_lock_irq(&np->lock);
4767
4768         /* flag should be set within ISR */
4769         testcnt = np->intr_test;
4770         if (!testcnt)
4771                 ret = 2;
4772
4773         nv_disable_hw_interrupts(dev, NVREG_IRQ_TIMER);
4774         if (!(np->msi_flags & NV_MSI_X_ENABLED))
4775                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4776         else
4777                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
4778
4779         spin_unlock_irq(&np->lock);
4780
4781         nv_free_irq(dev);
4782
4783         np->msi_flags = save_msi_flags;
4784
4785         if (netif_running(dev)) {
4786                 writel(save_poll_interval, base + NvRegPollingInterval);
4787                 writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4788                 /* restore original irq */
4789                 if (nv_request_irq(dev, 0))
4790                         return 0;
4791         }
4792
4793         return ret;
4794 }
4795
4796 static int nv_loopback_test(struct net_device *dev)
4797 {
4798         struct fe_priv *np = netdev_priv(dev);
4799         u8 __iomem *base = get_hwbase(dev);
4800         struct sk_buff *tx_skb, *rx_skb;
4801         dma_addr_t test_dma_addr;
4802         u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
4803         u32 flags;
4804         int len, i, pkt_len;
4805         u8 *pkt_data;
4806         u32 filter_flags = 0;
4807         u32 misc1_flags = 0;
4808         int ret = 1;
4809
4810         if (netif_running(dev)) {
4811                 nv_disable_irq(dev);
4812                 filter_flags = readl(base + NvRegPacketFilterFlags);
4813                 misc1_flags = readl(base + NvRegMisc1);
4814         } else {
4815                 nv_txrx_reset(dev);
4816         }
4817
4818         /* reinit driver view of the rx queue */
4819         set_bufsize(dev);
4820         nv_init_ring(dev);
4821
4822         /* setup hardware for loopback */
4823         writel(NVREG_MISC1_FORCE, base + NvRegMisc1);
4824         writel(NVREG_PFF_ALWAYS | NVREG_PFF_LOOPBACK, base + NvRegPacketFilterFlags);
4825
4826         /* reinit nic view of the rx queue */
4827         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4828         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4829         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4830                 base + NvRegRingSizes);
4831         pci_push(base);
4832
4833         /* restart rx engine */
4834         nv_start_rxtx(dev);
4835
4836         /* setup packet for tx */
4837         pkt_len = ETH_DATA_LEN;
4838         tx_skb = dev_alloc_skb(pkt_len);
4839         if (!tx_skb) {
4840                 printk(KERN_ERR "dev_alloc_skb() failed during loopback test"
4841                          " of %s\n", dev->name);
4842                 ret = 0;
4843                 goto out;
4844         }
4845         test_dma_addr = pci_map_single(np->pci_dev, tx_skb->data,
4846                                        skb_tailroom(tx_skb),
4847                                        PCI_DMA_FROMDEVICE);
4848         pkt_data = skb_put(tx_skb, pkt_len);
4849         for (i = 0; i < pkt_len; i++)
4850                 pkt_data[i] = (u8)(i & 0xff);
4851
4852         if (!nv_optimized(np)) {
4853                 np->tx_ring.orig[0].buf = cpu_to_le32(test_dma_addr);
4854                 np->tx_ring.orig[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
4855         } else {
4856                 np->tx_ring.ex[0].bufhigh = cpu_to_le32(dma_high(test_dma_addr));
4857                 np->tx_ring.ex[0].buflow = cpu_to_le32(dma_low(test_dma_addr));
4858                 np->tx_ring.ex[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
4859         }
4860         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4861         pci_push(get_hwbase(dev));
4862
4863         msleep(500);
4864
4865         /* check for rx of the packet */
4866         if (!nv_optimized(np)) {
4867                 flags = le32_to_cpu(np->rx_ring.orig[0].flaglen);
4868                 len = nv_descr_getlength(&np->rx_ring.orig[0], np->desc_ver);
4869
4870         } else {
4871                 flags = le32_to_cpu(np->rx_ring.ex[0].flaglen);
4872                 len = nv_descr_getlength_ex(&np->rx_ring.ex[0], np->desc_ver);
4873         }
4874
4875         if (flags & NV_RX_AVAIL) {
4876                 ret = 0;
4877         } else if (np->desc_ver == DESC_VER_1) {
4878                 if (flags & NV_RX_ERROR)
4879                         ret = 0;
4880         } else {
4881                 if (flags & NV_RX2_ERROR) {
4882                         ret = 0;
4883                 }
4884         }
4885
4886         if (ret) {
4887                 if (len != pkt_len) {
4888                         ret = 0;
4889                         dprintk(KERN_DEBUG "%s: loopback len mismatch %d vs %d\n",
4890                                 dev->name, len, pkt_len);
4891                 } else {
4892                         rx_skb = np->rx_skb[0].skb;
4893                         for (i = 0; i < pkt_len; i++) {
4894                                 if (rx_skb->data[i] != (u8)(i & 0xff)) {
4895                                         ret = 0;
4896                                         dprintk(KERN_DEBUG "%s: loopback pattern check failed on byte %d\n",
4897                                                 dev->name, i);
4898                                         break;
4899                                 }
4900                         }
4901                 }
4902         } else {
4903                 dprintk(KERN_DEBUG "%s: loopback - did not receive test packet\n", dev->name);
4904         }
4905
4906         pci_unmap_page(np->pci_dev, test_dma_addr,
4907                        (skb_end_pointer(tx_skb) - tx_skb->data),
4908                        PCI_DMA_TODEVICE);
4909         dev_kfree_skb_any(tx_skb);
4910  out:
4911         /* stop engines */
4912         nv_stop_rxtx(dev);
4913         nv_txrx_reset(dev);
4914         /* drain rx queue */
4915         nv_drain_rxtx(dev);
4916
4917         if (netif_running(dev)) {
4918                 writel(misc1_flags, base + NvRegMisc1);
4919                 writel(filter_flags, base + NvRegPacketFilterFlags);
4920                 nv_enable_irq(dev);
4921         }
4922
4923         return ret;
4924 }
4925
4926 static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64 *buffer)
4927 {
4928         struct fe_priv *np = netdev_priv(dev);
4929         u8 __iomem *base = get_hwbase(dev);
4930         int result;
4931         memset(buffer, 0, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(u64));
4932
4933         if (!nv_link_test(dev)) {
4934                 test->flags |= ETH_TEST_FL_FAILED;
4935                 buffer[0] = 1;
4936         }
4937
4938         if (test->flags & ETH_TEST_FL_OFFLINE) {
4939                 if (netif_running(dev)) {
4940                         netif_stop_queue(dev);
4941 #ifdef CONFIG_FORCEDETH_NAPI
4942                         napi_disable(&np->napi);
4943 #endif
4944                         netif_tx_lock_bh(dev);
4945                         spin_lock_irq(&np->lock);
4946                         nv_disable_hw_interrupts(dev, np->irqmask);
4947                         if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
4948                                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4949                         } else {
4950                                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
4951                         }
4952                         /* stop engines */
4953                         nv_stop_rxtx(dev);
4954                         nv_txrx_reset(dev);
4955                         /* drain rx queue */
4956                         nv_drain_rxtx(dev);
4957                         spin_unlock_irq(&np->lock);
4958                         netif_tx_unlock_bh(dev);
4959                 }
4960
4961                 if (!nv_register_test(dev)) {
4962                         test->flags |= ETH_TEST_FL_FAILED;
4963                         buffer[1] = 1;
4964                 }
4965
4966                 result = nv_interrupt_test(dev);
4967                 if (result != 1) {
4968                         test->flags |= ETH_TEST_FL_FAILED;
4969                         buffer[2] = 1;
4970                 }
4971                 if (result == 0) {
4972                         /* bail out */
4973                         return;
4974                 }
4975
4976                 if (!nv_loopback_test(dev)) {
4977                         test->flags |= ETH_TEST_FL_FAILED;
4978                         buffer[3] = 1;
4979                 }
4980
4981                 if (netif_running(dev)) {
4982                         /* reinit driver view of the rx queue */
4983                         set_bufsize(dev);
4984                         if (nv_init_ring(dev)) {
4985                                 if (!np->in_shutdown)
4986                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4987                         }
4988                         /* reinit nic view of the rx queue */
4989                         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4990                         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4991                         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4992                                 base + NvRegRingSizes);
4993                         pci_push(base);
4994                         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4995                         pci_push(base);
4996                         /* restart rx engine */
4997                         nv_start_rxtx(dev);
4998                         netif_start_queue(dev);
4999 #ifdef CONFIG_FORCEDETH_NAPI
5000                         napi_enable(&np->napi);
5001 #endif
5002                         nv_enable_hw_interrupts(dev, np->irqmask);
5003                 }
5004         }
5005 }
5006
5007 static void nv_get_strings(struct net_device *dev, u32 stringset, u8 *buffer)
5008 {
5009         switch (stringset) {
5010         case ETH_SS_STATS:
5011                 memcpy(buffer, &nv_estats_str, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(struct nv_ethtool_str));
5012                 break;
5013         case ETH_SS_TEST:
5014                 memcpy(buffer, &nv_etests_str, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(struct nv_ethtool_str));
5015                 break;
5016         }
5017 }
5018
5019 static const struct ethtool_ops ops = {
5020         .get_drvinfo = nv_get_drvinfo,
5021         .get_link = ethtool_op_get_link,
5022         .get_wol = nv_get_wol,
5023         .set_wol = nv_set_wol,
5024         .get_settings = nv_get_settings,
5025         .set_settings = nv_set_settings,
5026         .get_regs_len = nv_get_regs_len,
5027         .get_regs = nv_get_regs,
5028         .nway_reset = nv_nway_reset,
5029         .set_tso = nv_set_tso,
5030         .get_ringparam = nv_get_ringparam,
5031         .set_ringparam = nv_set_ringparam,
5032         .get_pauseparam = nv_get_pauseparam,
5033         .set_pauseparam = nv_set_pauseparam,
5034         .get_rx_csum = nv_get_rx_csum,
5035         .set_rx_csum = nv_set_rx_csum,
5036         .set_tx_csum = nv_set_tx_csum,
5037         .set_sg = nv_set_sg,
5038         .get_strings = nv_get_strings,
5039         .get_ethtool_stats = nv_get_ethtool_stats,
5040         .get_sset_count = nv_get_sset_count,
5041         .self_test = nv_self_test,
5042 };
5043
5044 static void nv_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
5045 {
5046         struct fe_priv *np = get_nvpriv(dev);
5047
5048         spin_lock_irq(&np->lock);
5049
5050         /* save vlan group */
5051         np->vlangrp = grp;
5052
5053         if (grp) {
5054                 /* enable vlan on MAC */
5055                 np->txrxctl_bits |= NVREG_TXRXCTL_VLANSTRIP | NVREG_TXRXCTL_VLANINS;
5056         } else {
5057                 /* disable vlan on MAC */
5058                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANSTRIP;
5059                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANINS;
5060         }
5061
5062         writel(np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
5063
5064         spin_unlock_irq(&np->lock);
5065 }
5066
5067 /* The mgmt unit and driver use a semaphore to access the phy during init */
5068 static int nv_mgmt_acquire_sema(struct net_device *dev)
5069 {
5070         u8 __iomem *base = get_hwbase(dev);
5071         int i;
5072         u32 tx_ctrl, mgmt_sema;
5073
5074         for (i = 0; i < 10; i++) {
5075                 mgmt_sema = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_SEMA_MASK;
5076                 if (mgmt_sema == NVREG_XMITCTL_MGMT_SEMA_FREE)
5077                         break;
5078                 msleep(500);
5079         }
5080
5081         if (mgmt_sema != NVREG_XMITCTL_MGMT_SEMA_FREE)
5082                 return 0;
5083
5084         for (i = 0; i < 2; i++) {
5085                 tx_ctrl = readl(base + NvRegTransmitterControl);
5086                 tx_ctrl |= NVREG_XMITCTL_HOST_SEMA_ACQ;
5087                 writel(tx_ctrl, base + NvRegTransmitterControl);
5088
5089                 /* verify that semaphore was acquired */
5090                 tx_ctrl = readl(base + NvRegTransmitterControl);
5091                 if (((tx_ctrl & NVREG_XMITCTL_HOST_SEMA_MASK) == NVREG_XMITCTL_HOST_SEMA_ACQ) &&
5092                     ((tx_ctrl & NVREG_XMITCTL_MGMT_SEMA_MASK) == NVREG_XMITCTL_MGMT_SEMA_FREE))
5093                         return 1;
5094                 else
5095                         udelay(50);
5096         }
5097
5098         return 0;
5099 }
5100
5101 static int nv_open(struct net_device *dev)
5102 {
5103         struct fe_priv *np = netdev_priv(dev);
5104         u8 __iomem *base = get_hwbase(dev);
5105         int ret = 1;
5106         int oom, i;
5107         u32 low;
5108
5109         dprintk(KERN_DEBUG "nv_open: begin\n");
5110
5111         /* erase previous misconfiguration */
5112         if (np->driver_data & DEV_HAS_POWER_CNTRL)
5113                 nv_mac_reset(dev);
5114         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5115         writel(0, base + NvRegMulticastAddrB);
5116         writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5117         writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5118         writel(0, base + NvRegPacketFilterFlags);
5119
5120         writel(0, base + NvRegTransmitterControl);
5121         writel(0, base + NvRegReceiverControl);
5122
5123         writel(0, base + NvRegAdapterControl);
5124
5125         if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)
5126                 writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
5127
5128         /* initialize descriptor rings */
5129         set_bufsize(dev);
5130         oom = nv_init_ring(dev);
5131
5132         writel(0, base + NvRegLinkSpeed);
5133         writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5134         nv_txrx_reset(dev);
5135         writel(0, base + NvRegUnknownSetupReg6);
5136
5137         np->in_shutdown = 0;
5138
5139         /* give hw rings */
5140         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5141         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5142                 base + NvRegRingSizes);
5143
5144         writel(np->linkspeed, base + NvRegLinkSpeed);
5145         if (np->desc_ver == DESC_VER_1)
5146                 writel(NVREG_TX_WM_DESC1_DEFAULT, base + NvRegTxWatermark);
5147         else
5148                 writel(NVREG_TX_WM_DESC2_3_DEFAULT, base + NvRegTxWatermark);
5149         writel(np->txrxctl_bits, base + NvRegTxRxControl);
5150         writel(np->vlanctl_bits, base + NvRegVlanControl);
5151         pci_push(base);
5152         writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);
5153         reg_delay(dev, NvRegUnknownSetupReg5, NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
5154                         NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX,
5155                         KERN_INFO "open: SetupReg5, Bit 31 remained off\n");
5156
5157         writel(0, base + NvRegMIIMask);
5158         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5159         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5160
5161         writel(NVREG_MISC1_FORCE | NVREG_MISC1_HD, base + NvRegMisc1);
5162         writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus);
5163         writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags);
5164         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5165
5166         writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus);
5167
5168         get_random_bytes(&low, sizeof(low));
5169         low &= NVREG_SLOTTIME_MASK;
5170         if (np->desc_ver == DESC_VER_1) {
5171                 writel(low|NVREG_SLOTTIME_DEFAULT, base + NvRegSlotTime);
5172         } else {
5173                 if (!(np->driver_data & DEV_HAS_GEAR_MODE)) {
5174                         /* setup legacy backoff */
5175                         writel(NVREG_SLOTTIME_LEGBF_ENABLED|NVREG_SLOTTIME_10_100_FULL|low, base + NvRegSlotTime);
5176                 } else {
5177                         writel(NVREG_SLOTTIME_10_100_FULL, base + NvRegSlotTime);
5178                         nv_gear_backoff_reseed(dev);
5179                 }
5180         }
5181         writel(NVREG_TX_DEFERRAL_DEFAULT, base + NvRegTxDeferral);
5182         writel(NVREG_RX_DEFERRAL_DEFAULT, base + NvRegRxDeferral);
5183         if (poll_interval == -1) {
5184                 if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT)
5185                         writel(NVREG_POLL_DEFAULT_THROUGHPUT, base + NvRegPollingInterval);
5186                 else
5187                         writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
5188         }
5189         else
5190                 writel(poll_interval & 0xFFFF, base + NvRegPollingInterval);
5191         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
5192         writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID|NVREG_ADAPTCTL_RUNNING,
5193                         base + NvRegAdapterControl);
5194         writel(NVREG_MIISPEED_BIT8|NVREG_MIIDELAY, base + NvRegMIISpeed);
5195         writel(NVREG_MII_LINKCHANGE, base + NvRegMIIMask);
5196         if (np->wolenabled)
5197                 writel(NVREG_WAKEUPFLAGS_ENABLE , base + NvRegWakeUpFlags);
5198
5199         i = readl(base + NvRegPowerState);
5200         if ( (i & NVREG_POWERSTATE_POWEREDUP) == 0)
5201                 writel(NVREG_POWERSTATE_POWEREDUP|i, base + NvRegPowerState);
5202
5203         pci_push(base);
5204         udelay(10);
5205         writel(readl(base + NvRegPowerState) | NVREG_POWERSTATE_VALID, base + NvRegPowerState);
5206
5207         nv_disable_hw_interrupts(dev, np->irqmask);
5208         pci_push(base);
5209         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5210         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5211         pci_push(base);
5212
5213         if (nv_request_irq(dev, 0)) {
5214                 goto out_drain;
5215         }
5216
5217         /* ask for interrupts */
5218         nv_enable_hw_interrupts(dev, np->irqmask);
5219
5220         spin_lock_irq(&np->lock);
5221         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5222         writel(0, base + NvRegMulticastAddrB);
5223         writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5224         writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5225         writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5226         /* One manual link speed update: Interrupts are enabled, future link
5227          * speed changes cause interrupts and are handled by nv_link_irq().
5228          */
5229         {
5230                 u32 miistat;
5231                 miistat = readl(base + NvRegMIIStatus);
5232                 writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5233                 dprintk(KERN_INFO "startup: got 0x%08x.\n", miistat);
5234         }
5235         /* set linkspeed to invalid value, thus force nv_update_linkspeed
5236          * to init hw */
5237         np->linkspeed = 0;
5238         ret = nv_update_linkspeed(dev);
5239         nv_start_rxtx(dev);
5240         netif_start_queue(dev);
5241 #ifdef CONFIG_FORCEDETH_NAPI
5242         napi_enable(&np->napi);
5243 #endif
5244
5245         if (ret) {
5246                 netif_carrier_on(dev);
5247         } else {
5248                 printk(KERN_INFO "%s: no link during initialization.\n", dev->name);
5249                 netif_carrier_off(dev);
5250         }
5251         if (oom)
5252                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
5253
5254         /* start statistics timer */
5255         if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2))
5256                 mod_timer(&np->stats_poll,
5257                         round_jiffies(jiffies + STATS_INTERVAL));
5258
5259         spin_unlock_irq(&np->lock);
5260
5261         return 0;
5262 out_drain:
5263         nv_drain_rxtx(dev);
5264         return ret;
5265 }
5266
5267 static int nv_close(struct net_device *dev)
5268 {
5269         struct fe_priv *np = netdev_priv(dev);
5270         u8 __iomem *base;
5271
5272         spin_lock_irq(&np->lock);
5273         np->in_shutdown = 1;
5274         spin_unlock_irq(&np->lock);
5275 #ifdef CONFIG_FORCEDETH_NAPI
5276         napi_disable(&np->napi);
5277 #endif
5278         synchronize_irq(np->pci_dev->irq);
5279
5280         del_timer_sync(&np->oom_kick);
5281         del_timer_sync(&np->nic_poll);
5282         del_timer_sync(&np->stats_poll);
5283
5284         netif_stop_queue(dev);
5285         spin_lock_irq(&np->lock);
5286         nv_stop_rxtx(dev);
5287         nv_txrx_reset(dev);
5288
5289         /* disable interrupts on the nic or we will lock up */
5290         base = get_hwbase(dev);
5291         nv_disable_hw_interrupts(dev, np->irqmask);
5292         pci_push(base);
5293         dprintk(KERN_INFO "%s: Irqmask is zero again\n", dev->name);
5294
5295         spin_unlock_irq(&np->lock);
5296
5297         nv_free_irq(dev);
5298
5299         nv_drain_rxtx(dev);
5300
5301         if (np->wolenabled) {
5302                 writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5303                 nv_start_rx(dev);
5304         }
5305
5306         /* FIXME: power down nic */
5307
5308         return 0;
5309 }
5310
5311 static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
5312 {
5313         struct net_device *dev;
5314         struct fe_priv *np;
5315         unsigned long addr;
5316         u8 __iomem *base;
5317         int err, i;
5318         u32 powerstate, txreg;
5319         u32 phystate_orig = 0, phystate;
5320         int phyinitialized = 0;
5321         DECLARE_MAC_BUF(mac);
5322         static int printed_version;
5323
5324         if (!printed_version++)
5325                 printk(KERN_INFO "%s: Reverse Engineered nForce ethernet"
5326                        " driver. Version %s.\n", DRV_NAME, FORCEDETH_VERSION);
5327
5328         dev = alloc_etherdev(sizeof(struct fe_priv));
5329         err = -ENOMEM;
5330         if (!dev)
5331                 goto out;
5332
5333         np = netdev_priv(dev);
5334         np->dev = dev;
5335         np->pci_dev = pci_dev;
5336         spin_lock_init(&np->lock);
5337         SET_NETDEV_DEV(dev, &pci_dev->dev);
5338
5339         init_timer(&np->oom_kick);
5340         np->oom_kick.data = (unsigned long) dev;
5341         np->oom_kick.function = &nv_do_rx_refill;       /* timer handler */
5342         init_timer(&np->nic_poll);
5343         np->nic_poll.data = (unsigned long) dev;
5344         np->nic_poll.function = &nv_do_nic_poll;        /* timer handler */
5345         init_timer(&np->stats_poll);
5346         np->stats_poll.data = (unsigned long) dev;
5347         np->stats_poll.function = &nv_do_stats_poll;    /* timer handler */
5348
5349         err = pci_enable_device(pci_dev);
5350         if (err)
5351                 goto out_free;
5352
5353         pci_set_master(pci_dev);
5354
5355         err = pci_request_regions(pci_dev, DRV_NAME);
5356         if (err < 0)
5357                 goto out_disable;
5358
5359         if (id->driver_data & (DEV_HAS_VLAN|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V2))
5360                 np->register_size = NV_PCI_REGSZ_VER3;
5361         else if (id->driver_data & DEV_HAS_STATISTICS_V1)
5362                 np->register_size = NV_PCI_REGSZ_VER2;
5363         else
5364                 np->register_size = NV_PCI_REGSZ_VER1;
5365
5366         err = -EINVAL;
5367         addr = 0;
5368         for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
5369                 dprintk(KERN_DEBUG "%s: resource %d start %p len %ld flags 0x%08lx.\n",
5370                                 pci_name(pci_dev), i, (void*)pci_resource_start(pci_dev, i),
5371                                 pci_resource_len(pci_dev, i),
5372                                 pci_resource_flags(pci_dev, i));
5373                 if (pci_resource_flags(pci_dev, i) & IORESOURCE_MEM &&
5374                                 pci_resource_len(pci_dev, i) >= np->register_size) {
5375                         addr = pci_resource_start(pci_dev, i);
5376                         break;
5377                 }
5378         }
5379         if (i == DEVICE_COUNT_RESOURCE) {
5380                 dev_printk(KERN_INFO, &pci_dev->dev,
5381                            "Couldn't find register window\n");
5382                 goto out_relreg;
5383         }
5384
5385         /* copy of driver data */
5386         np->driver_data = id->driver_data;
5387         /* copy of device id */
5388         np->device_id = id->device;
5389
5390         /* handle different descriptor versions */
5391         if (id->driver_data & DEV_HAS_HIGH_DMA) {
5392                 /* packet format 3: supports 40-bit addressing */
5393                 np->desc_ver = DESC_VER_3;
5394                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
5395                 if (dma_64bit) {
5396                         if (pci_set_dma_mask(pci_dev, DMA_39BIT_MASK))
5397                                 dev_printk(KERN_INFO, &pci_dev->dev,
5398                                         "64-bit DMA failed, using 32-bit addressing\n");
5399                         else
5400                                 dev->features |= NETIF_F_HIGHDMA;
5401                         if (pci_set_consistent_dma_mask(pci_dev, DMA_39BIT_MASK)) {
5402                                 dev_printk(KERN_INFO, &pci_dev->dev,
5403                                         "64-bit DMA (consistent) failed, using 32-bit ring buffers\n");
5404                         }
5405                 }
5406         } else if (id->driver_data & DEV_HAS_LARGEDESC) {
5407                 /* packet format 2: supports jumbo frames */
5408                 np->desc_ver = DESC_VER_2;
5409                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_2;
5410         } else {
5411                 /* original packet format */
5412                 np->desc_ver = DESC_VER_1;
5413                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_1;
5414         }
5415
5416         np->pkt_limit = NV_PKTLIMIT_1;
5417         if (id->driver_data & DEV_HAS_LARGEDESC)
5418                 np->pkt_limit = NV_PKTLIMIT_2;
5419
5420         if (id->driver_data & DEV_HAS_CHECKSUM) {
5421                 np->rx_csum = 1;
5422                 np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
5423                 dev->features |= NETIF_F_HW_CSUM | NETIF_F_SG;
5424                 dev->features |= NETIF_F_TSO;
5425         }
5426
5427         np->vlanctl_bits = 0;
5428         if (id->driver_data & DEV_HAS_VLAN) {
5429                 np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
5430                 dev->features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;
5431                 dev->vlan_rx_register = nv_vlan_rx_register;
5432         }
5433
5434         np->msi_flags = 0;
5435         if ((id->driver_data & DEV_HAS_MSI) && msi) {
5436                 np->msi_flags |= NV_MSI_CAPABLE;
5437         }
5438         if ((id->driver_data & DEV_HAS_MSI_X) && msix) {
5439                 np->msi_flags |= NV_MSI_X_CAPABLE;
5440         }
5441
5442         np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
5443         if ((id->driver_data & DEV_HAS_PAUSEFRAME_TX_V1) ||
5444             (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V2) ||
5445             (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V3)) {
5446                 np->pause_flags |= NV_PAUSEFRAME_TX_CAPABLE | NV_PAUSEFRAME_TX_REQ;
5447         }
5448
5449
5450         err = -ENOMEM;
5451         np->base = ioremap(addr, np->register_size);
5452         if (!np->base)
5453                 goto out_relreg;
5454         dev->base_addr = (unsigned long)np->base;
5455
5456         dev->irq = pci_dev->irq;
5457
5458         np->rx_ring_size = RX_RING_DEFAULT;
5459         np->tx_ring_size = TX_RING_DEFAULT;
5460
5461         if (!nv_optimized(np)) {
5462                 np->rx_ring.orig = pci_alloc_consistent(pci_dev,
5463                                         sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
5464                                         &np->ring_addr);
5465                 if (!np->rx_ring.orig)
5466                         goto out_unmap;
5467                 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
5468         } else {
5469                 np->rx_ring.ex = pci_alloc_consistent(pci_dev,
5470                                         sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
5471                                         &np->ring_addr);
5472                 if (!np->rx_ring.ex)
5473                         goto out_unmap;
5474                 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
5475         }
5476         np->rx_skb = kcalloc(np->rx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5477         np->tx_skb = kcalloc(np->tx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5478         if (!np->rx_skb || !np->tx_skb)
5479                 goto out_freering;
5480
5481         dev->open = nv_open;
5482         dev->stop = nv_close;
5483
5484         if (!nv_optimized(np))
5485                 dev->hard_start_xmit = nv_start_xmit;
5486         else
5487                 dev->hard_start_xmit = nv_start_xmit_optimized;
5488         dev->get_stats = nv_get_stats;
5489         dev->change_mtu = nv_change_mtu;
5490         dev->set_mac_address = nv_set_mac_address;
5491         dev->set_multicast_list = nv_set_multicast;
5492 #ifdef CONFIG_NET_POLL_CONTROLLER
5493         dev->poll_controller = nv_poll_controller;
5494 #endif
5495 #ifdef CONFIG_FORCEDETH_NAPI
5496         netif_napi_add(dev, &np->napi, nv_napi_poll, RX_WORK_PER_LOOP);
5497 #endif
5498         SET_ETHTOOL_OPS(dev, &ops);
5499         dev->tx_timeout = nv_tx_timeout;
5500         dev->watchdog_timeo = NV_WATCHDOG_TIMEO;
5501
5502         pci_set_drvdata(pci_dev, dev);
5503
5504         /* read the mac address */
5505         base = get_hwbase(dev);
5506         np->orig_mac[0] = readl(base + NvRegMacAddrA);
5507         np->orig_mac[1] = readl(base + NvRegMacAddrB);
5508
5509         /* check the workaround bit for correct mac address order */
5510         txreg = readl(base + NvRegTransmitPoll);
5511         if (id->driver_data & DEV_HAS_CORRECT_MACADDR) {
5512                 /* mac address is already in correct order */
5513                 dev->dev_addr[0] = (np->orig_mac[0] >>  0) & 0xff;
5514                 dev->dev_addr[1] = (np->orig_mac[0] >>  8) & 0xff;
5515                 dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
5516                 dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5517                 dev->dev_addr[4] = (np->orig_mac[1] >>  0) & 0xff;
5518                 dev->dev_addr[5] = (np->orig_mac[1] >>  8) & 0xff;
5519         } else if (txreg & NVREG_TRANSMITPOLL_MAC_ADDR_REV) {
5520                 /* mac address is already in correct order */
5521                 dev->dev_addr[0] = (np->orig_mac[0] >>  0) & 0xff;
5522                 dev->dev_addr[1] = (np->orig_mac[0] >>  8) & 0xff;
5523                 dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
5524                 dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5525                 dev->dev_addr[4] = (np->orig_mac[1] >>  0) & 0xff;
5526                 dev->dev_addr[5] = (np->orig_mac[1] >>  8) & 0xff;
5527                 /*
5528                  * Set orig mac address back to the reversed version.
5529                  * This flag will be cleared during low power transition.
5530                  * Therefore, we should always put back the reversed address.
5531                  */
5532                 np->orig_mac[0] = (dev->dev_addr[5] << 0) + (dev->dev_addr[4] << 8) +
5533                         (dev->dev_addr[3] << 16) + (dev->dev_addr[2] << 24);
5534                 np->orig_mac[1] = (dev->dev_addr[1] << 0) + (dev->dev_addr[0] << 8);
5535         } else {
5536                 /* need to reverse mac address to correct order */
5537                 dev->dev_addr[0] = (np->orig_mac[1] >>  8) & 0xff;
5538                 dev->dev_addr[1] = (np->orig_mac[1] >>  0) & 0xff;
5539                 dev->dev_addr[2] = (np->orig_mac[0] >> 24) & 0xff;
5540                 dev->dev_addr[3] = (np->orig_mac[0] >> 16) & 0xff;
5541                 dev->dev_addr[4] = (np->orig_mac[0] >>  8) & 0xff;
5542                 dev->dev_addr[5] = (np->orig_mac[0] >>  0) & 0xff;
5543                 writel(txreg|NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5544         }
5545         memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
5546
5547         if (!is_valid_ether_addr(dev->perm_addr)) {
5548                 /*
5549                  * Bad mac address. At least one bios sets the mac address
5550                  * to 01:23:45:67:89:ab
5551                  */
5552                 dev_printk(KERN_ERR, &pci_dev->dev,
5553                         "Invalid Mac address detected: %s\n",
5554                         print_mac(mac, dev->dev_addr));
5555                 dev_printk(KERN_ERR, &pci_dev->dev,
5556                         "Please complain to your hardware vendor. Switching to a random MAC.\n");
5557                 dev->dev_addr[0] = 0x00;
5558                 dev->dev_addr[1] = 0x00;
5559                 dev->dev_addr[2] = 0x6c;
5560                 get_random_bytes(&dev->dev_addr[3], 3);
5561         }
5562
5563         dprintk(KERN_DEBUG "%s: MAC Address %s\n",
5564                 pci_name(pci_dev), print_mac(mac, dev->dev_addr));
5565
5566         /* set mac address */
5567         nv_copy_mac_to_hw(dev);
5568
5569         /* disable WOL */
5570         writel(0, base + NvRegWakeUpFlags);
5571         np->wolenabled = 0;
5572
5573         if (id->driver_data & DEV_HAS_POWER_CNTRL) {
5574
5575                 /* take phy and nic out of low power mode */
5576                 powerstate = readl(base + NvRegPowerState2);
5577                 powerstate &= ~NVREG_POWERSTATE2_POWERUP_MASK;
5578                 if ((id->device == PCI_DEVICE_ID_NVIDIA_NVENET_12 ||
5579                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_13) &&
5580                     pci_dev->revision >= 0xA3)
5581                         powerstate |= NVREG_POWERSTATE2_POWERUP_REV_A3;
5582                 writel(powerstate, base + NvRegPowerState2);
5583         }
5584
5585         if (np->desc_ver == DESC_VER_1) {
5586                 np->tx_flags = NV_TX_VALID;
5587         } else {
5588                 np->tx_flags = NV_TX2_VALID;
5589         }
5590         if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT) {
5591                 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5592                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5593                         np->msi_flags |= 0x0003;
5594         } else {
5595                 np->irqmask = NVREG_IRQMASK_CPU;
5596                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5597                         np->msi_flags |= 0x0001;
5598         }
5599
5600         if (id->driver_data & DEV_NEED_TIMERIRQ)
5601                 np->irqmask |= NVREG_IRQ_TIMER;
5602         if (id->driver_data & DEV_NEED_LINKTIMER) {
5603                 dprintk(KERN_INFO "%s: link timer on.\n", pci_name(pci_dev));
5604                 np->need_linktimer = 1;
5605                 np->link_timeout = jiffies + LINK_TIMEOUT;
5606         } else {
5607                 dprintk(KERN_INFO "%s: link timer off.\n", pci_name(pci_dev));
5608                 np->need_linktimer = 0;
5609         }
5610
5611         /* Limit the number of tx's outstanding for hw bug */
5612         if (id->driver_data & DEV_NEED_TX_LIMIT) {
5613                 np->tx_limit = 1;
5614                 if ((id->device == PCI_DEVICE_ID_NVIDIA_NVENET_32 ||
5615                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_33 ||
5616                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_34 ||
5617                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_35 ||
5618                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_36 ||
5619                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_37 ||
5620                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_38 ||
5621                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_39) &&
5622                     pci_dev->revision >= 0xA2)
5623                         np->tx_limit = 0;
5624         }
5625
5626         /* clear phy state and temporarily halt phy interrupts */
5627         writel(0, base + NvRegMIIMask);
5628         phystate = readl(base + NvRegAdapterControl);
5629         if (phystate & NVREG_ADAPTCTL_RUNNING) {
5630                 phystate_orig = 1;
5631                 phystate &= ~NVREG_ADAPTCTL_RUNNING;
5632                 writel(phystate, base + NvRegAdapterControl);
5633         }
5634         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5635
5636         if (id->driver_data & DEV_HAS_MGMT_UNIT) {
5637                 /* management unit running on the mac? */
5638                 if (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_PHY_INIT) {
5639                         np->mac_in_use = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_ST;
5640                         dprintk(KERN_INFO "%s: mgmt unit is running. mac in use %x.\n", pci_name(pci_dev), np->mac_in_use);
5641                         if (nv_mgmt_acquire_sema(dev)) {
5642                                 /* management unit setup the phy already? */
5643                                 if ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_MASK) ==
5644                                     NVREG_XMITCTL_SYNC_PHY_INIT) {
5645                                         /* phy is inited by mgmt unit */
5646                                         phyinitialized = 1;
5647                                         dprintk(KERN_INFO "%s: Phy already initialized by mgmt unit.\n", pci_name(pci_dev));
5648                                 } else {
5649                                         /* we need to init the phy */
5650                                 }
5651                         }
5652                 }
5653         }
5654
5655         /* find a suitable phy */
5656         for (i = 1; i <= 32; i++) {
5657                 int id1, id2;
5658                 int phyaddr = i & 0x1F;
5659
5660                 spin_lock_irq(&np->lock);
5661                 id1 = mii_rw(dev, phyaddr, MII_PHYSID1, MII_READ);
5662                 spin_unlock_irq(&np->lock);
5663                 if (id1 < 0 || id1 == 0xffff)
5664                         continue;
5665                 spin_lock_irq(&np->lock);
5666                 id2 = mii_rw(dev, phyaddr, MII_PHYSID2, MII_READ);
5667                 spin_unlock_irq(&np->lock);
5668                 if (id2 < 0 || id2 == 0xffff)
5669                         continue;
5670
5671                 np->phy_model = id2 & PHYID2_MODEL_MASK;
5672                 id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
5673                 id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
5674                 dprintk(KERN_DEBUG "%s: open: Found PHY %04x:%04x at address %d.\n",
5675                         pci_name(pci_dev), id1, id2, phyaddr);
5676                 np->phyaddr = phyaddr;
5677                 np->phy_oui = id1 | id2;
5678
5679                 /* Realtek hardcoded phy id1 to all zero's on certain phys */
5680                 if (np->phy_oui == PHY_OUI_REALTEK2)
5681                         np->phy_oui = PHY_OUI_REALTEK;
5682                 /* Setup phy revision for Realtek */
5683                 if (np->phy_oui == PHY_OUI_REALTEK && np->phy_model == PHY_MODEL_REALTEK_8211)
5684                         np->phy_rev = mii_rw(dev, phyaddr, MII_RESV1, MII_READ) & PHY_REV_MASK;
5685
5686                 break;
5687         }
5688         if (i == 33) {
5689                 dev_printk(KERN_INFO, &pci_dev->dev,
5690                         "open: Could not find a valid PHY.\n");
5691                 goto out_error;
5692         }
5693
5694         if (!phyinitialized) {
5695                 /* reset it */
5696                 phy_init(dev);
5697         } else {
5698                 /* see if it is a gigabit phy */
5699                 u32 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
5700                 if (mii_status & PHY_GIGABIT) {
5701                         np->gigabit = PHY_GIGABIT;
5702                 }
5703         }
5704
5705         /* set default link speed settings */
5706         np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
5707         np->duplex = 0;
5708         np->autoneg = 1;
5709
5710         err = register_netdev(dev);
5711         if (err) {
5712                 dev_printk(KERN_INFO, &pci_dev->dev,
5713                            "unable to register netdev: %d\n", err);
5714                 goto out_error;
5715         }
5716
5717         dev_printk(KERN_INFO, &pci_dev->dev, "ifname %s, PHY OUI 0x%x @ %d, "
5718                    "addr %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n",
5719                    dev->name,
5720                    np->phy_oui,
5721                    np->phyaddr,
5722                    dev->dev_addr[0],
5723                    dev->dev_addr[1],
5724                    dev->dev_addr[2],
5725                    dev->dev_addr[3],
5726                    dev->dev_addr[4],
5727                    dev->dev_addr[5]);
5728
5729         dev_printk(KERN_INFO, &pci_dev->dev, "%s%s%s%s%s%s%s%s%s%sdesc-v%u\n",
5730                    dev->features & NETIF_F_HIGHDMA ? "highdma " : "",
5731                    dev->features & (NETIF_F_HW_CSUM | NETIF_F_SG) ?
5732                         "csum " : "",
5733                    dev->features & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX) ?
5734                         "vlan " : "",
5735                    id->driver_data & DEV_HAS_POWER_CNTRL ? "pwrctl " : "",
5736                    id->driver_data & DEV_HAS_MGMT_UNIT ? "mgmt " : "",
5737                    id->driver_data & DEV_NEED_TIMERIRQ ? "timirq " : "",
5738                    np->gigabit == PHY_GIGABIT ? "gbit " : "",
5739                    np->need_linktimer ? "lnktim " : "",
5740                    np->msi_flags & NV_MSI_CAPABLE ? "msi " : "",
5741                    np->msi_flags & NV_MSI_X_CAPABLE ? "msi-x " : "",
5742                    np->desc_ver);
5743
5744         return 0;
5745
5746 out_error:
5747         if (phystate_orig)
5748                 writel(phystate|NVREG_ADAPTCTL_RUNNING, base + NvRegAdapterControl);
5749         pci_set_drvdata(pci_dev, NULL);
5750 out_freering:
5751         free_rings(dev);
5752 out_unmap:
5753         iounmap(get_hwbase(dev));
5754 out_relreg:
5755         pci_release_regions(pci_dev);
5756 out_disable:
5757         pci_disable_device(pci_dev);
5758 out_free:
5759         free_netdev(dev);
5760 out:
5761         return err;
5762 }
5763
5764 static void nv_restore_phy(struct net_device *dev)
5765 {
5766         struct fe_priv *np = netdev_priv(dev);
5767         u16 phy_reserved, mii_control;
5768
5769         if (np->phy_oui == PHY_OUI_REALTEK &&
5770             np->phy_model == PHY_MODEL_REALTEK_8201 &&
5771             phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
5772                 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3);
5773                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, MII_READ);
5774                 phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
5775                 phy_reserved |= PHY_REALTEK_INIT8;
5776                 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, phy_reserved);
5777                 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1);
5778
5779                 /* restart auto negotiation */
5780                 mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
5781                 mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
5782                 mii_rw(dev, np->phyaddr, MII_BMCR, mii_control);
5783         }
5784 }
5785
5786 static void __devexit nv_remove(struct pci_dev *pci_dev)
5787 {
5788         struct net_device *dev = pci_get_drvdata(pci_dev);
5789         struct fe_priv *np = netdev_priv(dev);
5790         u8 __iomem *base = get_hwbase(dev);
5791
5792         unregister_netdev(dev);
5793
5794         /* special op: write back the misordered MAC address - otherwise
5795          * the next nv_probe would see a wrong address.
5796          */
5797         writel(np->orig_mac[0], base + NvRegMacAddrA);
5798         writel(np->orig_mac[1], base + NvRegMacAddrB);
5799         writel(readl(base + NvRegTransmitPoll) & ~NVREG_TRANSMITPOLL_MAC_ADDR_REV,
5800                base + NvRegTransmitPoll);
5801
5802         /* restore any phy related changes */
5803         nv_restore_phy(dev);
5804
5805         /* free all structures */
5806         free_rings(dev);
5807         iounmap(get_hwbase(dev));
5808         pci_release_regions(pci_dev);
5809         pci_disable_device(pci_dev);
5810         free_netdev(dev);
5811         pci_set_drvdata(pci_dev, NULL);
5812 }
5813
5814 #ifdef CONFIG_PM
5815 static int nv_suspend(struct pci_dev *pdev, pm_message_t state)
5816 {
5817         struct net_device *dev = pci_get_drvdata(pdev);
5818         struct fe_priv *np = netdev_priv(dev);
5819
5820         if (!netif_running(dev))
5821                 goto out;
5822
5823         netif_device_detach(dev);
5824
5825         // Gross.
5826         nv_close(dev);
5827
5828         pci_save_state(pdev);
5829         pci_enable_wake(pdev, pci_choose_state(pdev, state), np->wolenabled);
5830         pci_set_power_state(pdev, pci_choose_state(pdev, state));
5831 out:
5832         return 0;
5833 }
5834
5835 static int nv_resume(struct pci_dev *pdev)
5836 {
5837         struct net_device *dev = pci_get_drvdata(pdev);
5838         u8 __iomem *base = get_hwbase(dev);
5839         int rc = 0;
5840         u32 txreg;
5841
5842         if (!netif_running(dev))
5843                 goto out;
5844
5845         netif_device_attach(dev);
5846
5847         pci_set_power_state(pdev, PCI_D0);
5848         pci_restore_state(pdev);
5849         pci_enable_wake(pdev, PCI_D0, 0);
5850
5851         /* restore mac address reverse flag */
5852         txreg = readl(base + NvRegTransmitPoll);
5853         txreg |= NVREG_TRANSMITPOLL_MAC_ADDR_REV;
5854         writel(txreg, base + NvRegTransmitPoll);
5855
5856         rc = nv_open(dev);
5857         nv_set_multicast(dev);
5858 out:
5859         return rc;
5860 }
5861 #else
5862 #define nv_suspend NULL
5863 #define nv_resume NULL
5864 #endif /* CONFIG_PM */
5865
5866 static struct pci_device_id pci_tbl[] = {
5867         {       /* nForce Ethernet Controller */
5868                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_1),
5869                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
5870         },
5871         {       /* nForce2 Ethernet Controller */
5872                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_2),
5873                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
5874         },
5875         {       /* nForce3 Ethernet Controller */
5876                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_3),
5877                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
5878         },
5879         {       /* nForce3 Ethernet Controller */
5880                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_4),
5881                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
5882         },
5883         {       /* nForce3 Ethernet Controller */
5884                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_5),
5885                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
5886         },
5887         {       /* nForce3 Ethernet Controller */
5888                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_6),
5889                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
5890         },
5891         {       /* nForce3 Ethernet Controller */
5892                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_7),
5893                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
5894         },
5895         {       /* CK804 Ethernet Controller */
5896                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_8),
5897                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
5898         },
5899         {       /* CK804 Ethernet Controller */
5900                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_9),
5901                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
5902         },
5903         {       /* MCP04 Ethernet Controller */
5904                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_10),
5905                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
5906         },
5907         {       /* MCP04 Ethernet Controller */
5908                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_11),
5909                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
5910         },
5911         {       /* MCP51 Ethernet Controller */
5912                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_12),
5913                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1,
5914         },
5915         {       /* MCP51 Ethernet Controller */
5916                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_13),
5917                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1,
5918         },
5919         {       /* MCP55 Ethernet Controller */
5920                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_14),
5921                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN|DEV_HAS_MSI|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_NEED_TX_LIMIT,
5922         },
5923         {       /* MCP55 Ethernet Controller */
5924                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_15),
5925                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN|DEV_HAS_MSI|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_NEED_TX_LIMIT,
5926         },
5927         {       /* MCP61 Ethernet Controller */
5928                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_16),
5929                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5930         },
5931         {       /* MCP61 Ethernet Controller */
5932                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_17),
5933                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5934         },
5935         {       /* MCP61 Ethernet Controller */
5936                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_18),
5937                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5938         },
5939         {       /* MCP61 Ethernet Controller */
5940                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_19),
5941                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5942         },
5943         {       /* MCP65 Ethernet Controller */
5944                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_20),
5945                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
5946         },
5947         {       /* MCP65 Ethernet Controller */
5948                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_21),
5949                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
5950         },
5951         {       /* MCP65 Ethernet Controller */
5952                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_22),
5953                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
5954         },
5955         {       /* MCP65 Ethernet Controller */
5956                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_23),
5957                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
5958         },
5959         {       /* MCP67 Ethernet Controller */
5960                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_24),
5961                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE,
5962         },
5963         {       /* MCP67 Ethernet Controller */
5964                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_25),
5965                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE,
5966         },
5967         {       /* MCP67 Ethernet Controller */
5968                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_26),
5969                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE,
5970         },
5971         {       /* MCP67 Ethernet Controller */
5972                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_27),
5973                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE,
5974         },
5975         {       /* MCP73 Ethernet Controller */
5976                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_28),
5977                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE,
5978         },
5979         {       /* MCP73 Ethernet Controller */
5980                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_29),
5981                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE,
5982         },
5983         {       /* MCP73 Ethernet Controller */
5984                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_30),
5985                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE,
5986         },
5987         {       /* MCP73 Ethernet Controller */
5988                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_31),
5989                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE,
5990         },
5991         {       /* MCP77 Ethernet Controller */
5992                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_32),
5993                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
5994         },
5995         {       /* MCP77 Ethernet Controller */
5996                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_33),
5997                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
5998         },
5999         {       /* MCP77 Ethernet Controller */
6000                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_34),
6001                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6002         },
6003         {       /* MCP77 Ethernet Controller */
6004                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_35),
6005                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6006         },
6007         {       /* MCP79 Ethernet Controller */
6008                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_36),
6009                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6010         },
6011         {       /* MCP79 Ethernet Controller */
6012                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_37),
6013                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6014         },
6015         {       /* MCP79 Ethernet Controller */
6016                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_38),
6017                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6018         },
6019         {       /* MCP79 Ethernet Controller */
6020                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_39),
6021                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6022         },
6023         {0,},
6024 };
6025
6026 static struct pci_driver driver = {
6027         .name           = DRV_NAME,
6028         .id_table       = pci_tbl,
6029         .probe          = nv_probe,
6030         .remove         = __devexit_p(nv_remove),
6031         .suspend        = nv_suspend,
6032         .resume         = nv_resume,
6033 };
6034
6035 static int __init init_nic(void)
6036 {
6037         return pci_register_driver(&driver);
6038 }
6039
6040 static void __exit exit_nic(void)
6041 {
6042         pci_unregister_driver(&driver);
6043 }
6044
6045 module_param(max_interrupt_work, int, 0);
6046 MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt");
6047 module_param(optimization_mode, int, 0);
6048 MODULE_PARM_DESC(optimization_mode, "In throughput mode (0), every tx & rx packet will generate an interrupt. In CPU mode (1), interrupts are controlled by a timer.");
6049 module_param(poll_interval, int, 0);
6050 MODULE_PARM_DESC(poll_interval, "Interval determines how frequent timer interrupt is generated by [(time_in_micro_secs * 100) / (2^10)]. Min is 0 and Max is 65535.");
6051 module_param(msi, int, 0);
6052 MODULE_PARM_DESC(msi, "MSI interrupts are enabled by setting to 1 and disabled by setting to 0.");
6053 module_param(msix, int, 0);
6054 MODULE_PARM_DESC(msix, "MSIX interrupts are enabled by setting to 1 and disabled by setting to 0.");
6055 module_param(dma_64bit, int, 0);
6056 MODULE_PARM_DESC(dma_64bit, "High DMA is enabled by setting to 1 and disabled by setting to 0.");
6057 module_param(phy_cross, int, 0);
6058 MODULE_PARM_DESC(phy_cross, "Phy crossover detection for Realtek 8201 phy is enabled by setting to 1 and disabled by setting to 0.");
6059
6060 MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
6061 MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");
6062 MODULE_LICENSE("GPL");
6063
6064 MODULE_DEVICE_TABLE(pci, pci_tbl);
6065
6066 module_init(init_nic);
6067 module_exit(exit_nic);