1 /* pcnet32.c: An AMD PCnet32 ethernet driver for linux. */
3 * Copyright 1996-1999 Thomas Bogendoerfer
5 * Derived from the lance driver written 1993,1994,1995 by Donald Becker.
7 * Copyright 1993 United States Government as represented by the
8 * Director, National Security Agency.
10 * This software may be used and distributed according to the terms
11 * of the GNU General Public License, incorporated herein by reference.
13 * This driver is for PCnet32 and PCnetPCI based ethercards
15 /**************************************************************************
17 * Fixed a few bugs, related to running the controller in 32bit mode.
19 * Carsten Langgaard, carstenl@mips.com
20 * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
22 *************************************************************************/
24 #define DRV_NAME "pcnet32"
25 #define DRV_VERSION "1.31c"
26 #define DRV_RELDATE "01.Nov.2005"
27 #define PFX DRV_NAME ": "
29 static const char *version =
30 DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " tsbogend@alpha.franken.de\n";
32 #include <linux/module.h>
33 #include <linux/kernel.h>
34 #include <linux/string.h>
35 #include <linux/errno.h>
36 #include <linux/ioport.h>
37 #include <linux/slab.h>
38 #include <linux/interrupt.h>
39 #include <linux/pci.h>
40 #include <linux/delay.h>
41 #include <linux/init.h>
42 #include <linux/ethtool.h>
43 #include <linux/mii.h>
44 #include <linux/crc32.h>
45 #include <linux/netdevice.h>
46 #include <linux/etherdevice.h>
47 #include <linux/skbuff.h>
48 #include <linux/spinlock.h>
49 #include <linux/moduleparam.h>
50 #include <linux/bitops.h>
54 #include <asm/uaccess.h>
58 * PCI device identifiers for "new style" Linux PCI Device Drivers
60 static struct pci_device_id pcnet32_pci_tbl[] = {
61 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE_HOME, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
62 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
64 * Adapters that were sold with IBM's RS/6000 or pSeries hardware have
65 * the incorrect vendor id.
67 { PCI_VENDOR_ID_TRIDENT, PCI_DEVICE_ID_AMD_LANCE, PCI_ANY_ID, PCI_ANY_ID,
68 PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, 0 },
72 MODULE_DEVICE_TABLE (pci, pcnet32_pci_tbl);
74 static int cards_found;
79 static unsigned int pcnet32_portlist[] __initdata =
80 { 0x300, 0x320, 0x340, 0x360, 0 };
84 static int pcnet32_debug = 0;
85 static int tx_start = 1; /* Mapping -- 0:20, 1:64, 2:128, 3:~220 (depends on chip vers) */
86 static int pcnet32vlb; /* check for VLB cards ? */
88 static struct net_device *pcnet32_dev;
90 static int max_interrupt_work = 2;
91 static int rx_copybreak = 200;
93 #define PCNET32_PORT_AUI 0x00
94 #define PCNET32_PORT_10BT 0x01
95 #define PCNET32_PORT_GPSI 0x02
96 #define PCNET32_PORT_MII 0x03
98 #define PCNET32_PORT_PORTSEL 0x03
99 #define PCNET32_PORT_ASEL 0x04
100 #define PCNET32_PORT_100 0x40
101 #define PCNET32_PORT_FD 0x80
103 #define PCNET32_DMA_MASK 0xffffffff
105 #define PCNET32_WATCHDOG_TIMEOUT (jiffies + (2 * HZ))
106 #define PCNET32_BLINK_TIMEOUT (jiffies + (HZ/4))
109 * table to translate option values from tulip
110 * to internal options
112 static unsigned char options_mapping[] = {
113 PCNET32_PORT_ASEL, /* 0 Auto-select */
114 PCNET32_PORT_AUI, /* 1 BNC/AUI */
115 PCNET32_PORT_AUI, /* 2 AUI/BNC */
116 PCNET32_PORT_ASEL, /* 3 not supported */
117 PCNET32_PORT_10BT | PCNET32_PORT_FD, /* 4 10baseT-FD */
118 PCNET32_PORT_ASEL, /* 5 not supported */
119 PCNET32_PORT_ASEL, /* 6 not supported */
120 PCNET32_PORT_ASEL, /* 7 not supported */
121 PCNET32_PORT_ASEL, /* 8 not supported */
122 PCNET32_PORT_MII, /* 9 MII 10baseT */
123 PCNET32_PORT_MII | PCNET32_PORT_FD, /* 10 MII 10baseT-FD */
124 PCNET32_PORT_MII, /* 11 MII (autosel) */
125 PCNET32_PORT_10BT, /* 12 10BaseT */
126 PCNET32_PORT_MII | PCNET32_PORT_100, /* 13 MII 100BaseTx */
127 PCNET32_PORT_MII | PCNET32_PORT_100 | PCNET32_PORT_FD, /* 14 MII 100BaseTx-FD */
128 PCNET32_PORT_ASEL /* 15 not supported */
131 static const char pcnet32_gstrings_test[][ETH_GSTRING_LEN] = {
132 "Loopback test (offline)"
134 #define PCNET32_TEST_LEN (sizeof(pcnet32_gstrings_test) / ETH_GSTRING_LEN)
136 #define PCNET32_NUM_REGS 168
138 #define MAX_UNITS 8 /* More are supported, limit only on options */
139 static int options[MAX_UNITS];
140 static int full_duplex[MAX_UNITS];
141 static int homepna[MAX_UNITS];
144 * Theory of Operation
146 * This driver uses the same software structure as the normal lance
147 * driver. So look for a verbose description in lance.c. The differences
148 * to the normal lance driver is the use of the 32bit mode of PCnet32
149 * and PCnetPCI chips. Because these chips are 32bit chips, there is no
150 * 16MB limitation and we don't need bounce buffers.
155 * v0.01: Initial version
156 * only tested on Alpha Noname Board
157 * v0.02: changed IRQ handling for new interrupt scheme (dev_id)
158 * tested on a ASUS SP3G
159 * v0.10: fixed an odd problem with the 79C974 in a Compaq Deskpro XL
160 * looks like the 974 doesn't like stopping and restarting in a
161 * short period of time; now we do a reinit of the lance; the
162 * bug was triggered by doing ifconfig eth0 <ip> broadcast <addr>
163 * and hangs the machine (thanks to Klaus Liedl for debugging)
164 * v0.12: by suggestion from Donald Becker: Renamed driver to pcnet32,
165 * made it standalone (no need for lance.c)
166 * v0.13: added additional PCI detecting for special PCI devices (Compaq)
167 * v0.14: stripped down additional PCI probe (thanks to David C Niemi
168 * and sveneric@xs4all.nl for testing this on their Compaq boxes)
169 * v0.15: added 79C965 (VLB) probe
170 * added interrupt sharing for PCI chips
171 * v0.16: fixed set_multicast_list on Alpha machines
172 * v0.17: removed hack from dev.c; now pcnet32 uses ethif_probe in Space.c
173 * v0.19: changed setting of autoselect bit
174 * v0.20: removed additional Compaq PCI probe; there is now a working one
175 * in arch/i386/bios32.c
176 * v0.21: added endian conversion for ppc, from work by cort@cs.nmt.edu
177 * v0.22: added printing of status to ring dump
178 * v0.23: changed enet_statistics to net_devive_stats
179 * v0.90: added multicast filter
180 * added module support
181 * changed irq probe to new style
182 * added PCnetFast chip id
183 * added fix for receive stalls with Intel saturn chipsets
184 * added in-place rx skbs like in the tulip driver
186 * v0.91: added PCnetFast+ chip id
188 * v1.00: added some stuff from Donald Becker's 2.0.34 version
189 * added support for byte counters in net_dev_stats
190 * v1.01: do ring dumps, only when debugging the driver
191 * increased the transmit timeout
192 * v1.02: fixed memory leak in pcnet32_init_ring()
193 * v1.10: workaround for stopped transmitter
194 * added port selection for modules
195 * detect special T1/E1 WAN card and setup port selection
196 * v1.11: fixed wrong checking of Tx errors
197 * v1.20: added check of return value kmalloc (cpeterso@cs.washington.edu)
198 * added save original kmalloc addr for freeing (mcr@solidum.com)
199 * added support for PCnetHome chip (joe@MIT.EDU)
200 * rewritten PCI card detection
201 * added dwio mode to get driver working on some PPC machines
202 * v1.21: added mii selection and mii ioctl
203 * v1.22: changed pci scanning code to make PPC people happy
204 * fixed switching to 32bit mode in pcnet32_open() (thanks
205 * to Michael Richard <mcr@solidum.com> for noticing this one)
206 * added sub vendor/device id matching (thanks again to
207 * Michael Richard <mcr@solidum.com>)
208 * added chip id for 79c973/975 (thanks to Zach Brown <zab@zabbo.net>)
209 * v1.23 fixed small bug, when manual selecting MII speed/duplex
210 * v1.24 Applied Thomas' patch to use TxStartPoint and thus decrease TxFIFO
211 * underflows. Added tx_start_pt module parameter. Increased
212 * TX_RING_SIZE from 16 to 32. Added #ifdef'd code to use DXSUFLO
213 * for FAST[+] chipsets. <kaf@fc.hp.com>
214 * v1.24ac Added SMP spinlocking - Alan Cox <alan@redhat.com>
215 * v1.25kf Added No Interrupt on successful Tx for some Tx's <kaf@fc.hp.com>
216 * v1.26 Converted to pci_alloc_consistent, Jamey Hicks / George France
217 * <jamey@crl.dec.com>
218 * - Fixed a few bugs, related to running the controller in 32bit mode.
219 * 23 Oct, 2000. Carsten Langgaard, carstenl@mips.com
220 * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
221 * v1.26p Fix oops on rmmod+insmod; plug i/o resource leak - Paul Gortmaker
222 * v1.27 improved CSR/PROM address detection, lots of cleanups,
223 * new pcnet32vlb module option, HP-PARISC support,
224 * added module parameter descriptions,
225 * initial ethtool support - Helge Deller <deller@gmx.de>
226 * v1.27a Sun Feb 10 2002 Go Taniguchi <go@turbolinux.co.jp>
227 * use alloc_etherdev and register_netdev
228 * fix pci probe not increment cards_found
229 * FD auto negotiate error workaround for xSeries250
230 * clean up and using new mii module
231 * v1.27b Sep 30 2002 Kent Yoder <yoder1@us.ibm.com>
232 * Added timer for cable connection state changes.
233 * v1.28 20 Feb 2004 Don Fry <brazilnut@us.ibm.com>
234 * Jon Mason <jonmason@us.ibm.com>, Chinmay Albal <albal@in.ibm.com>
235 * Now uses ethtool_ops, netif_msg_* and generic_mii_ioctl.
236 * Fixes bogus 'Bus master arbitration failure', pci_[un]map_single
237 * length errors, and transmit hangs. Cleans up after errors in open.
238 * Jim Lewis <jklewis@us.ibm.com> added ethernet loopback test.
239 * Thomas Munck Steenholdt <tmus@tmus.dk> non-mii ioctl corrections.
240 * v1.29 6 Apr 2004 Jim Lewis <jklewis@us.ibm.com> added physical
241 * identification code (blink led's) and register dump.
242 * Don Fry added timer for 971/972 so skbufs don't remain on tx ring
244 * v1.30 18 May 2004 Don Fry removed timer and Last Transmit Interrupt
245 * (ltint) as they added complexity and didn't give good throughput.
246 * v1.30a 22 May 2004 Don Fry limit frames received during interrupt.
247 * v1.30b 24 May 2004 Don Fry fix bogus tx carrier errors with 79c973,
248 * assisted by Bruce Penrod <bmpenrod@endruntechnologies.com>.
249 * v1.30c 25 May 2004 Don Fry added netif_wake_queue after pcnet32_restart.
250 * v1.30d 01 Jun 2004 Don Fry discard oversize rx packets.
251 * v1.30e 11 Jun 2004 Don Fry recover after fifo error and rx hang.
252 * v1.30f 16 Jun 2004 Don Fry cleanup IRQ to allow 0 and 1 for PCI,
253 * expanding on suggestions from Ralf Baechle <ralf@linux-mips.org>,
254 * and Brian Murphy <brian@murphy.dk>.
255 * v1.30g 22 Jun 2004 Patrick Simmons <psimmons@flash.net> added option
256 * homepna for selecting HomePNA mode for PCNet/Home 79C978.
257 * v1.30h 24 Jun 2004 Don Fry correctly select auto, speed, duplex in bcr32.
258 * v1.30i 28 Jun 2004 Don Fry change to use module_param.
259 * v1.30j 29 Apr 2005 Don Fry fix skb/map leak with loopback test.
260 * v1.31 02 Sep 2005 Hubert WS Lin <wslin@tw.ibm.c0m> added set_ringparam().
261 * v1.31a 12 Sep 2005 Hubert WS Lin <wslin@tw.ibm.c0m> set min ring size to 4
262 * to allow loopback test to work unchanged.
263 * v1.31b 06 Oct 2005 Don Fry changed alloc_ring to show name of device
264 * if allocation fails
265 * v1.31c 01 Nov 2005 Don Fry Allied Telesyn 2700/2701 FX are 100Mbit only.
266 * Force 100Mbit FD if Auto (ASEL) is selected.
267 * See Bugzilla 2669 and 4551.
272 * Set the number of Tx and Rx buffers, using Log_2(# buffers).
273 * Reasonable default values are 4 Tx buffers, and 16 Rx buffers.
274 * That translates to 2 (4 == 2^^2) and 4 (16 == 2^^4).
276 #ifndef PCNET32_LOG_TX_BUFFERS
277 #define PCNET32_LOG_TX_BUFFERS 4
278 #define PCNET32_LOG_RX_BUFFERS 5
279 #define PCNET32_LOG_MAX_TX_BUFFERS 9 /* 2^9 == 512 */
280 #define PCNET32_LOG_MAX_RX_BUFFERS 9
283 #define TX_RING_SIZE (1 << (PCNET32_LOG_TX_BUFFERS))
284 #define TX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_TX_BUFFERS))
286 #define RX_RING_SIZE (1 << (PCNET32_LOG_RX_BUFFERS))
287 #define RX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_RX_BUFFERS))
289 #define PKT_BUF_SZ 1544
291 /* Offsets from base I/O address. */
292 #define PCNET32_WIO_RDP 0x10
293 #define PCNET32_WIO_RAP 0x12
294 #define PCNET32_WIO_RESET 0x14
295 #define PCNET32_WIO_BDP 0x16
297 #define PCNET32_DWIO_RDP 0x10
298 #define PCNET32_DWIO_RAP 0x14
299 #define PCNET32_DWIO_RESET 0x18
300 #define PCNET32_DWIO_BDP 0x1C
302 #define PCNET32_TOTAL_SIZE 0x20
304 /* The PCNET32 Rx and Tx ring descriptors. */
305 struct pcnet32_rx_head {
313 struct pcnet32_tx_head {
321 /* The PCNET32 32-Bit initialization block, described in databook. */
322 struct pcnet32_init_block {
328 /* Receive and transmit ring base, along with extra bits. */
333 /* PCnet32 access functions */
334 struct pcnet32_access {
335 u16 (*read_csr)(unsigned long, int);
336 void (*write_csr)(unsigned long, int, u16);
337 u16 (*read_bcr)(unsigned long, int);
338 void (*write_bcr)(unsigned long, int, u16);
339 u16 (*read_rap)(unsigned long);
340 void (*write_rap)(unsigned long, u16);
341 void (*reset)(unsigned long);
345 * The first field of pcnet32_private is read by the ethernet device
346 * so the structure should be allocated using pci_alloc_consistent().
348 struct pcnet32_private {
349 struct pcnet32_init_block init_block;
350 /* The Tx and Rx ring entries must be aligned on 16-byte boundaries in 32bit mode. */
351 struct pcnet32_rx_head *rx_ring;
352 struct pcnet32_tx_head *tx_ring;
353 dma_addr_t dma_addr; /* DMA address of beginning of this
355 pci_alloc_consistent */
356 struct pci_dev *pci_dev; /* Pointer to the associated pci device
359 /* The saved address of a sent-in-place packet/buffer, for skfree(). */
360 struct sk_buff **tx_skbuff;
361 struct sk_buff **rx_skbuff;
362 dma_addr_t *tx_dma_addr;
363 dma_addr_t *rx_dma_addr;
364 struct pcnet32_access a;
365 spinlock_t lock; /* Guard lock */
366 unsigned int cur_rx, cur_tx; /* The next free ring entry */
367 unsigned int rx_ring_size; /* current rx ring size */
368 unsigned int tx_ring_size; /* current tx ring size */
369 unsigned int rx_mod_mask; /* rx ring modular mask */
370 unsigned int tx_mod_mask; /* tx ring modular mask */
371 unsigned short rx_len_bits;
372 unsigned short tx_len_bits;
373 dma_addr_t rx_ring_dma_addr;
374 dma_addr_t tx_ring_dma_addr;
375 unsigned int dirty_rx, dirty_tx; /* The ring entries to be free()ed. */
376 struct net_device_stats stats;
379 unsigned int shared_irq:1, /* shared irq possible */
380 dxsuflo:1, /* disable transmit stop on uflo */
381 mii:1; /* mii port available */
382 struct net_device *next;
383 struct mii_if_info mii_if;
384 struct timer_list watchdog_timer;
385 struct timer_list blink_timer;
386 u32 msg_enable; /* debug message level */
389 static void pcnet32_probe_vlbus(void);
390 static int pcnet32_probe_pci(struct pci_dev *, const struct pci_device_id *);
391 static int pcnet32_probe1(unsigned long, int, struct pci_dev *);
392 static int pcnet32_open(struct net_device *);
393 static int pcnet32_init_ring(struct net_device *);
394 static int pcnet32_start_xmit(struct sk_buff *, struct net_device *);
395 static int pcnet32_rx(struct net_device *);
396 static void pcnet32_tx_timeout (struct net_device *dev);
397 static irqreturn_t pcnet32_interrupt(int, void *, struct pt_regs *);
398 static int pcnet32_close(struct net_device *);
399 static struct net_device_stats *pcnet32_get_stats(struct net_device *);
400 static void pcnet32_load_multicast(struct net_device *dev);
401 static void pcnet32_set_multicast_list(struct net_device *);
402 static int pcnet32_ioctl(struct net_device *, struct ifreq *, int);
403 static void pcnet32_watchdog(struct net_device *);
404 static int mdio_read(struct net_device *dev, int phy_id, int reg_num);
405 static void mdio_write(struct net_device *dev, int phy_id, int reg_num, int val);
406 static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits);
407 static void pcnet32_ethtool_test(struct net_device *dev,
408 struct ethtool_test *eth_test, u64 *data);
409 static int pcnet32_loopback_test(struct net_device *dev, uint64_t *data1);
410 static int pcnet32_phys_id(struct net_device *dev, u32 data);
411 static void pcnet32_led_blink_callback(struct net_device *dev);
412 static int pcnet32_get_regs_len(struct net_device *dev);
413 static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
415 static void pcnet32_purge_tx_ring(struct net_device *dev);
416 static int pcnet32_alloc_ring(struct net_device *dev, char *name);
417 static void pcnet32_free_ring(struct net_device *dev);
421 PCI_USES_IO=1, PCI_USES_MEM=2, PCI_USES_MASTER=4,
422 PCI_ADDR0=0x10<<0, PCI_ADDR1=0x10<<1, PCI_ADDR2=0x10<<2, PCI_ADDR3=0x10<<3,
426 static u16 pcnet32_wio_read_csr (unsigned long addr, int index)
428 outw (index, addr+PCNET32_WIO_RAP);
429 return inw (addr+PCNET32_WIO_RDP);
432 static void pcnet32_wio_write_csr (unsigned long addr, int index, u16 val)
434 outw (index, addr+PCNET32_WIO_RAP);
435 outw (val, addr+PCNET32_WIO_RDP);
438 static u16 pcnet32_wio_read_bcr (unsigned long addr, int index)
440 outw (index, addr+PCNET32_WIO_RAP);
441 return inw (addr+PCNET32_WIO_BDP);
444 static void pcnet32_wio_write_bcr (unsigned long addr, int index, u16 val)
446 outw (index, addr+PCNET32_WIO_RAP);
447 outw (val, addr+PCNET32_WIO_BDP);
450 static u16 pcnet32_wio_read_rap (unsigned long addr)
452 return inw (addr+PCNET32_WIO_RAP);
455 static void pcnet32_wio_write_rap (unsigned long addr, u16 val)
457 outw (val, addr+PCNET32_WIO_RAP);
460 static void pcnet32_wio_reset (unsigned long addr)
462 inw (addr+PCNET32_WIO_RESET);
465 static int pcnet32_wio_check (unsigned long addr)
467 outw (88, addr+PCNET32_WIO_RAP);
468 return (inw (addr+PCNET32_WIO_RAP) == 88);
471 static struct pcnet32_access pcnet32_wio = {
472 .read_csr = pcnet32_wio_read_csr,
473 .write_csr = pcnet32_wio_write_csr,
474 .read_bcr = pcnet32_wio_read_bcr,
475 .write_bcr = pcnet32_wio_write_bcr,
476 .read_rap = pcnet32_wio_read_rap,
477 .write_rap = pcnet32_wio_write_rap,
478 .reset = pcnet32_wio_reset
481 static u16 pcnet32_dwio_read_csr (unsigned long addr, int index)
483 outl (index, addr+PCNET32_DWIO_RAP);
484 return (inl (addr+PCNET32_DWIO_RDP) & 0xffff);
487 static void pcnet32_dwio_write_csr (unsigned long addr, int index, u16 val)
489 outl (index, addr+PCNET32_DWIO_RAP);
490 outl (val, addr+PCNET32_DWIO_RDP);
493 static u16 pcnet32_dwio_read_bcr (unsigned long addr, int index)
495 outl (index, addr+PCNET32_DWIO_RAP);
496 return (inl (addr+PCNET32_DWIO_BDP) & 0xffff);
499 static void pcnet32_dwio_write_bcr (unsigned long addr, int index, u16 val)
501 outl (index, addr+PCNET32_DWIO_RAP);
502 outl (val, addr+PCNET32_DWIO_BDP);
505 static u16 pcnet32_dwio_read_rap (unsigned long addr)
507 return (inl (addr+PCNET32_DWIO_RAP) & 0xffff);
510 static void pcnet32_dwio_write_rap (unsigned long addr, u16 val)
512 outl (val, addr+PCNET32_DWIO_RAP);
515 static void pcnet32_dwio_reset (unsigned long addr)
517 inl (addr+PCNET32_DWIO_RESET);
520 static int pcnet32_dwio_check (unsigned long addr)
522 outl (88, addr+PCNET32_DWIO_RAP);
523 return ((inl (addr+PCNET32_DWIO_RAP) & 0xffff) == 88);
526 static struct pcnet32_access pcnet32_dwio = {
527 .read_csr = pcnet32_dwio_read_csr,
528 .write_csr = pcnet32_dwio_write_csr,
529 .read_bcr = pcnet32_dwio_read_bcr,
530 .write_bcr = pcnet32_dwio_write_bcr,
531 .read_rap = pcnet32_dwio_read_rap,
532 .write_rap = pcnet32_dwio_write_rap,
533 .reset = pcnet32_dwio_reset
536 #ifdef CONFIG_NET_POLL_CONTROLLER
537 static void pcnet32_poll_controller(struct net_device *dev)
539 disable_irq(dev->irq);
540 pcnet32_interrupt(0, dev, NULL);
541 enable_irq(dev->irq);
546 static int pcnet32_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
548 struct pcnet32_private *lp = dev->priv;
553 spin_lock_irqsave(&lp->lock, flags);
554 mii_ethtool_gset(&lp->mii_if, cmd);
555 spin_unlock_irqrestore(&lp->lock, flags);
561 static int pcnet32_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
563 struct pcnet32_private *lp = dev->priv;
568 spin_lock_irqsave(&lp->lock, flags);
569 r = mii_ethtool_sset(&lp->mii_if, cmd);
570 spin_unlock_irqrestore(&lp->lock, flags);
575 static void pcnet32_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
577 struct pcnet32_private *lp = dev->priv;
579 strcpy (info->driver, DRV_NAME);
580 strcpy (info->version, DRV_VERSION);
582 strcpy (info->bus_info, pci_name(lp->pci_dev));
584 sprintf(info->bus_info, "VLB 0x%lx", dev->base_addr);
587 static u32 pcnet32_get_link(struct net_device *dev)
589 struct pcnet32_private *lp = dev->priv;
593 spin_lock_irqsave(&lp->lock, flags);
595 r = mii_link_ok(&lp->mii_if);
597 ulong ioaddr = dev->base_addr; /* card base I/O address */
598 r = (lp->a.read_bcr(ioaddr, 4) != 0xc0);
600 spin_unlock_irqrestore(&lp->lock, flags);
605 static u32 pcnet32_get_msglevel(struct net_device *dev)
607 struct pcnet32_private *lp = dev->priv;
608 return lp->msg_enable;
611 static void pcnet32_set_msglevel(struct net_device *dev, u32 value)
613 struct pcnet32_private *lp = dev->priv;
614 lp->msg_enable = value;
617 static int pcnet32_nway_reset(struct net_device *dev)
619 struct pcnet32_private *lp = dev->priv;
624 spin_lock_irqsave(&lp->lock, flags);
625 r = mii_nway_restart(&lp->mii_if);
626 spin_unlock_irqrestore(&lp->lock, flags);
631 static void pcnet32_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ering)
633 struct pcnet32_private *lp = dev->priv;
635 ering->tx_max_pending = TX_MAX_RING_SIZE - 1;
636 ering->tx_pending = lp->tx_ring_size - 1;
637 ering->rx_max_pending = RX_MAX_RING_SIZE - 1;
638 ering->rx_pending = lp->rx_ring_size - 1;
641 static int pcnet32_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ering)
643 struct pcnet32_private *lp = dev->priv;
647 if (ering->rx_mini_pending || ering->rx_jumbo_pending)
650 if (netif_running(dev))
653 spin_lock_irqsave(&lp->lock, flags);
654 pcnet32_free_ring(dev);
655 lp->tx_ring_size = min(ering->tx_pending, (unsigned int) TX_MAX_RING_SIZE);
656 lp->rx_ring_size = min(ering->rx_pending, (unsigned int) RX_MAX_RING_SIZE);
658 /* set the minimum ring size to 4, to allow the loopback test to work
661 for (i = 2; i <= PCNET32_LOG_MAX_TX_BUFFERS; i++) {
662 if (lp->tx_ring_size <= (1 << i))
665 lp->tx_ring_size = (1 << i);
666 lp->tx_mod_mask = lp->tx_ring_size - 1;
667 lp->tx_len_bits = (i << 12);
669 for (i = 2; i <= PCNET32_LOG_MAX_RX_BUFFERS; i++) {
670 if (lp->rx_ring_size <= (1 << i))
673 lp->rx_ring_size = (1 << i);
674 lp->rx_mod_mask = lp->rx_ring_size - 1;
675 lp->rx_len_bits = (i << 4);
677 if (pcnet32_alloc_ring(dev, dev->name)) {
678 pcnet32_free_ring(dev);
679 spin_unlock_irqrestore(&lp->lock, flags);
683 spin_unlock_irqrestore(&lp->lock, flags);
685 if (pcnet32_debug & NETIF_MSG_DRV)
686 printk(KERN_INFO PFX "%s: Ring Param Settings: RX: %d, TX: %d\n",
687 dev->name, lp->rx_ring_size, lp->tx_ring_size);
689 if (netif_running(dev))
695 static void pcnet32_get_strings(struct net_device *dev, u32 stringset, u8 *data)
697 memcpy(data, pcnet32_gstrings_test, sizeof(pcnet32_gstrings_test));
700 static int pcnet32_self_test_count(struct net_device *dev)
702 return PCNET32_TEST_LEN;
705 static void pcnet32_ethtool_test(struct net_device *dev,
706 struct ethtool_test *test, u64 *data)
708 struct pcnet32_private *lp = dev->priv;
711 if (test->flags == ETH_TEST_FL_OFFLINE) {
712 rc = pcnet32_loopback_test(dev, data);
714 if (netif_msg_hw(lp))
715 printk(KERN_DEBUG "%s: Loopback test failed.\n", dev->name);
716 test->flags |= ETH_TEST_FL_FAILED;
717 } else if (netif_msg_hw(lp))
718 printk(KERN_DEBUG "%s: Loopback test passed.\n", dev->name);
719 } else if (netif_msg_hw(lp))
720 printk(KERN_DEBUG "%s: No tests to run (specify 'Offline' on ethtool).", dev->name);
721 } /* end pcnet32_ethtool_test */
723 static int pcnet32_loopback_test(struct net_device *dev, uint64_t *data1)
725 struct pcnet32_private *lp = dev->priv;
726 struct pcnet32_access *a = &lp->a; /* access to registers */
727 ulong ioaddr = dev->base_addr; /* card base I/O address */
728 struct sk_buff *skb; /* sk buff */
729 int x, i; /* counters */
730 int numbuffs = 4; /* number of TX/RX buffers and descs */
731 u16 status = 0x8300; /* TX ring status */
732 u16 teststatus; /* test of ring status */
733 int rc; /* return code */
734 int size; /* size of packets */
735 unsigned char *packet; /* source packet data */
736 static int data_len = 60; /* length of source packets */
740 *data1 = 1; /* status of test, default to fail */
741 rc = 1; /* default to fail */
743 if (netif_running(dev))
746 spin_lock_irqsave(&lp->lock, flags);
748 /* Reset the PCNET32 */
749 lp->a.reset (ioaddr);
751 /* switch pcnet32 to 32bit mode */
752 lp->a.write_bcr (ioaddr, 20, 2);
754 lp->init_block.mode = le16_to_cpu((lp->options & PCNET32_PORT_PORTSEL) << 7);
755 lp->init_block.filter[0] = 0;
756 lp->init_block.filter[1] = 0;
758 /* purge & init rings but don't actually restart */
759 pcnet32_restart(dev, 0x0000);
761 lp->a.write_csr(ioaddr, 0, 0x0004); /* Set STOP bit */
763 /* Initialize Transmit buffers. */
764 size = data_len + 15;
765 for (x=0; x<numbuffs; x++) {
766 if (!(skb = dev_alloc_skb(size))) {
767 if (netif_msg_hw(lp))
768 printk(KERN_DEBUG "%s: Cannot allocate skb at line: %d!\n",
769 dev->name, __LINE__);
773 skb_put(skb, size); /* create space for data */
774 lp->tx_skbuff[x] = skb;
775 lp->tx_ring[x].length = le16_to_cpu(-skb->len);
776 lp->tx_ring[x].misc = 0;
778 /* put DA and SA into the skb */
780 *packet++ = dev->dev_addr[i];
782 *packet++ = dev->dev_addr[i];
788 /* fill packet with data */
789 for (i=0; i<data_len; i++)
792 lp->tx_dma_addr[x] = pci_map_single(lp->pci_dev, skb->data,
793 skb->len, PCI_DMA_TODEVICE);
794 lp->tx_ring[x].base = (u32)le32_to_cpu(lp->tx_dma_addr[x]);
795 wmb(); /* Make sure owner changes after all others are visible */
796 lp->tx_ring[x].status = le16_to_cpu(status);
800 x = a->read_bcr(ioaddr, 32); /* set internal loopback in BSR32 */
802 a->write_bcr(ioaddr, 32, x);
804 lp->a.write_csr (ioaddr, 15, 0x0044); /* set int loopback in CSR15 */
806 teststatus = le16_to_cpu(0x8000);
807 lp->a.write_csr(ioaddr, 0, 0x0002); /* Set STRT bit */
809 /* Check status of descriptors */
810 for (x=0; x<numbuffs; x++) {
813 while ((lp->rx_ring[x].status & teststatus) && (ticks < 200)) {
814 spin_unlock_irqrestore(&lp->lock, flags);
816 spin_lock_irqsave(&lp->lock, flags);
821 if (netif_msg_hw(lp))
822 printk("%s: Desc %d failed to reset!\n",dev->name,x);
827 lp->a.write_csr(ioaddr, 0, 0x0004); /* Set STOP bit */
829 if (netif_msg_hw(lp) && netif_msg_pktdata(lp)) {
830 printk(KERN_DEBUG "%s: RX loopback packets:\n", dev->name);
832 for (x=0; x<numbuffs; x++) {
833 printk(KERN_DEBUG "%s: Packet %d:\n", dev->name, x);
834 skb = lp->rx_skbuff[x];
835 for (i=0; i<size; i++) {
836 printk("%02x ", *(skb->data+i));
844 while (x<numbuffs && !rc) {
845 skb = lp->rx_skbuff[x];
846 packet = lp->tx_skbuff[x]->data;
847 for (i=0; i<size; i++) {
848 if (*(skb->data+i) != packet[i]) {
849 if (netif_msg_hw(lp))
850 printk(KERN_DEBUG "%s: Error in compare! %2x - %02x %02x\n",
851 dev->name, i, *(skb->data+i), packet[i]);
863 pcnet32_purge_tx_ring(dev);
864 x = a->read_csr(ioaddr, 15) & 0xFFFF;
865 a->write_csr(ioaddr, 15, (x & ~0x0044)); /* reset bits 6 and 2 */
867 x = a->read_bcr(ioaddr, 32); /* reset internal loopback */
869 a->write_bcr(ioaddr, 32, x);
871 spin_unlock_irqrestore(&lp->lock, flags);
873 if (netif_running(dev)) {
876 lp->a.write_bcr (ioaddr, 20, 4); /* return to 16bit mode */
880 } /* end pcnet32_loopback_test */
882 static void pcnet32_led_blink_callback(struct net_device *dev)
884 struct pcnet32_private *lp = dev->priv;
885 struct pcnet32_access *a = &lp->a;
886 ulong ioaddr = dev->base_addr;
890 spin_lock_irqsave(&lp->lock, flags);
891 for (i=4; i<8; i++) {
892 a->write_bcr(ioaddr, i, a->read_bcr(ioaddr, i) ^ 0x4000);
894 spin_unlock_irqrestore(&lp->lock, flags);
896 mod_timer(&lp->blink_timer, PCNET32_BLINK_TIMEOUT);
899 static int pcnet32_phys_id(struct net_device *dev, u32 data)
901 struct pcnet32_private *lp = dev->priv;
902 struct pcnet32_access *a = &lp->a;
903 ulong ioaddr = dev->base_addr;
907 if (!lp->blink_timer.function) {
908 init_timer(&lp->blink_timer);
909 lp->blink_timer.function = (void *) pcnet32_led_blink_callback;
910 lp->blink_timer.data = (unsigned long) dev;
913 /* Save the current value of the bcrs */
914 spin_lock_irqsave(&lp->lock, flags);
915 for (i=4; i<8; i++) {
916 regs[i-4] = a->read_bcr(ioaddr, i);
918 spin_unlock_irqrestore(&lp->lock, flags);
920 mod_timer(&lp->blink_timer, jiffies);
921 set_current_state(TASK_INTERRUPTIBLE);
923 if ((!data) || (data > (u32)(MAX_SCHEDULE_TIMEOUT / HZ)))
924 data = (u32)(MAX_SCHEDULE_TIMEOUT / HZ);
926 msleep_interruptible(data * 1000);
927 del_timer_sync(&lp->blink_timer);
929 /* Restore the original value of the bcrs */
930 spin_lock_irqsave(&lp->lock, flags);
931 for (i=4; i<8; i++) {
932 a->write_bcr(ioaddr, i, regs[i-4]);
934 spin_unlock_irqrestore(&lp->lock, flags);
939 static int pcnet32_get_regs_len(struct net_device *dev)
941 return(PCNET32_NUM_REGS * sizeof(u16));
944 static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
949 struct pcnet32_private *lp = dev->priv;
950 struct pcnet32_access *a = &lp->a;
951 ulong ioaddr = dev->base_addr;
955 spin_lock_irqsave(&lp->lock, flags);
957 csr0 = a->read_csr(ioaddr, 0);
958 if (!(csr0 & 0x0004)) { /* If not stopped */
959 /* set SUSPEND (SPND) - CSR5 bit 0 */
960 a->write_csr(ioaddr, 5, 0x0001);
962 /* poll waiting for bit to be set */
964 while (!(a->read_csr(ioaddr, 5) & 0x0001)) {
965 spin_unlock_irqrestore(&lp->lock, flags);
967 spin_lock_irqsave(&lp->lock, flags);
970 if (netif_msg_hw(lp))
971 printk(KERN_DEBUG "%s: Error getting into suspend!\n",
978 /* read address PROM */
979 for (i=0; i<16; i += 2)
980 *buff++ = inw(ioaddr + i);
982 /* read control and status registers */
983 for (i=0; i<90; i++) {
984 *buff++ = a->read_csr(ioaddr, i);
987 *buff++ = a->read_csr(ioaddr, 112);
988 *buff++ = a->read_csr(ioaddr, 114);
990 /* read bus configuration registers */
991 for (i=0; i<30; i++) {
992 *buff++ = a->read_bcr(ioaddr, i);
994 *buff++ = 0; /* skip bcr30 so as not to hang 79C976 */
995 for (i=31; i<36; i++) {
996 *buff++ = a->read_bcr(ioaddr, i);
999 /* read mii phy registers */
1001 for (i=0; i<32; i++) {
1002 lp->a.write_bcr(ioaddr, 33, ((lp->mii_if.phy_id) << 5) | i);
1003 *buff++ = lp->a.read_bcr(ioaddr, 34);
1007 if (!(csr0 & 0x0004)) { /* If not stopped */
1008 /* clear SUSPEND (SPND) - CSR5 bit 0 */
1009 a->write_csr(ioaddr, 5, 0x0000);
1012 i = buff - (u16 *)ptr;
1013 for (; i < PCNET32_NUM_REGS; i++)
1016 spin_unlock_irqrestore(&lp->lock, flags);
1019 static struct ethtool_ops pcnet32_ethtool_ops = {
1020 .get_settings = pcnet32_get_settings,
1021 .set_settings = pcnet32_set_settings,
1022 .get_drvinfo = pcnet32_get_drvinfo,
1023 .get_msglevel = pcnet32_get_msglevel,
1024 .set_msglevel = pcnet32_set_msglevel,
1025 .nway_reset = pcnet32_nway_reset,
1026 .get_link = pcnet32_get_link,
1027 .get_ringparam = pcnet32_get_ringparam,
1028 .set_ringparam = pcnet32_set_ringparam,
1029 .get_tx_csum = ethtool_op_get_tx_csum,
1030 .get_sg = ethtool_op_get_sg,
1031 .get_tso = ethtool_op_get_tso,
1032 .get_strings = pcnet32_get_strings,
1033 .self_test_count = pcnet32_self_test_count,
1034 .self_test = pcnet32_ethtool_test,
1035 .phys_id = pcnet32_phys_id,
1036 .get_regs_len = pcnet32_get_regs_len,
1037 .get_regs = pcnet32_get_regs,
1038 .get_perm_addr = ethtool_op_get_perm_addr,
1041 /* only probes for non-PCI devices, the rest are handled by
1042 * pci_register_driver via pcnet32_probe_pci */
1044 static void __devinit
1045 pcnet32_probe_vlbus(void)
1047 unsigned int *port, ioaddr;
1049 /* search for PCnet32 VLB cards at known addresses */
1050 for (port = pcnet32_portlist; (ioaddr = *port); port++) {
1051 if (request_region(ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_vlbus")) {
1052 /* check if there is really a pcnet chip on that ioaddr */
1053 if ((inb(ioaddr + 14) == 0x57) && (inb(ioaddr + 15) == 0x57)) {
1054 pcnet32_probe1(ioaddr, 0, NULL);
1056 release_region(ioaddr, PCNET32_TOTAL_SIZE);
1063 static int __devinit
1064 pcnet32_probe_pci(struct pci_dev *pdev, const struct pci_device_id *ent)
1066 unsigned long ioaddr;
1069 err = pci_enable_device(pdev);
1071 if (pcnet32_debug & NETIF_MSG_PROBE)
1072 printk(KERN_ERR PFX "failed to enable device -- err=%d\n", err);
1075 pci_set_master(pdev);
1077 ioaddr = pci_resource_start (pdev, 0);
1079 if (pcnet32_debug & NETIF_MSG_PROBE)
1080 printk (KERN_ERR PFX "card has no PCI IO resources, aborting\n");
1084 if (!pci_dma_supported(pdev, PCNET32_DMA_MASK)) {
1085 if (pcnet32_debug & NETIF_MSG_PROBE)
1086 printk(KERN_ERR PFX "architecture does not support 32bit PCI busmaster DMA\n");
1089 if (request_region(ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_pci") == NULL) {
1090 if (pcnet32_debug & NETIF_MSG_PROBE)
1091 printk(KERN_ERR PFX "io address range already allocated\n");
1095 err = pcnet32_probe1(ioaddr, 1, pdev);
1097 pci_disable_device(pdev);
1104 * Called from both pcnet32_probe_vlbus and pcnet_probe_pci.
1105 * pdev will be NULL when called from pcnet32_probe_vlbus.
1107 static int __devinit
1108 pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
1110 struct pcnet32_private *lp;
1111 dma_addr_t lp_dma_addr;
1113 int fdx, mii, fset, dxsuflo;
1116 struct net_device *dev;
1117 struct pcnet32_access *a = NULL;
1121 /* reset the chip */
1122 pcnet32_wio_reset(ioaddr);
1124 /* NOTE: 16-bit check is first, otherwise some older PCnet chips fail */
1125 if (pcnet32_wio_read_csr(ioaddr, 0) == 4 && pcnet32_wio_check(ioaddr)) {
1128 pcnet32_dwio_reset(ioaddr);
1129 if (pcnet32_dwio_read_csr(ioaddr, 0) == 4 && pcnet32_dwio_check(ioaddr)) {
1132 goto err_release_region;
1135 chip_version = a->read_csr(ioaddr, 88) | (a->read_csr(ioaddr,89) << 16);
1136 if ((pcnet32_debug & NETIF_MSG_PROBE) && (pcnet32_debug & NETIF_MSG_HW))
1137 printk(KERN_INFO " PCnet chip version is %#x.\n", chip_version);
1138 if ((chip_version & 0xfff) != 0x003) {
1139 if (pcnet32_debug & NETIF_MSG_PROBE)
1140 printk(KERN_INFO PFX "Unsupported chip version.\n");
1141 goto err_release_region;
1144 /* initialize variables */
1145 fdx = mii = fset = dxsuflo = 0;
1146 chip_version = (chip_version >> 12) & 0xffff;
1148 switch (chip_version) {
1150 chipname = "PCnet/PCI 79C970"; /* PCI */
1154 chipname = "PCnet/PCI 79C970"; /* 970 gives the wrong chip id back */
1156 chipname = "PCnet/32 79C965"; /* 486/VL bus */
1159 chipname = "PCnet/PCI II 79C970A"; /* PCI */
1163 chipname = "PCnet/FAST 79C971"; /* PCI */
1164 fdx = 1; mii = 1; fset = 1;
1167 chipname = "PCnet/FAST+ 79C972"; /* PCI */
1168 fdx = 1; mii = 1; fset = 1;
1171 chipname = "PCnet/FAST III 79C973"; /* PCI */
1175 chipname = "PCnet/Home 79C978"; /* PCI */
1178 * This is based on specs published at www.amd.com. This section
1179 * assumes that a card with a 79C978 wants to go into standard
1180 * ethernet mode. The 79C978 can also go into 1Mb HomePNA mode,
1181 * and the module option homepna=1 can select this instead.
1183 media = a->read_bcr(ioaddr, 49);
1184 media &= ~3; /* default to 10Mb ethernet */
1185 if (cards_found < MAX_UNITS && homepna[cards_found])
1186 media |= 1; /* switch to home wiring mode */
1187 if (pcnet32_debug & NETIF_MSG_PROBE)
1188 printk(KERN_DEBUG PFX "media set to %sMbit mode.\n",
1189 (media & 1) ? "1" : "10");
1190 a->write_bcr(ioaddr, 49, media);
1193 chipname = "PCnet/FAST III 79C975"; /* PCI */
1197 chipname = "PCnet/PRO 79C976";
1201 if (pcnet32_debug & NETIF_MSG_PROBE)
1202 printk(KERN_INFO PFX "PCnet version %#x, no PCnet32 chip.\n",
1204 goto err_release_region;
1208 * On selected chips turn on the BCR18:NOUFLO bit. This stops transmit
1209 * starting until the packet is loaded. Strike one for reliability, lose
1210 * one for latency - although on PCI this isnt a big loss. Older chips
1211 * have FIFO's smaller than a packet, so you can't do this.
1212 * Turn on BCR18:BurstRdEn and BCR18:BurstWrEn.
1216 a->write_bcr(ioaddr, 18, (a->read_bcr(ioaddr, 18) | 0x0860));
1217 a->write_csr(ioaddr, 80, (a->read_csr(ioaddr, 80) & 0x0C00) | 0x0c00);
1221 dev = alloc_etherdev(0);
1223 if (pcnet32_debug & NETIF_MSG_PROBE)
1224 printk(KERN_ERR PFX "Memory allocation failed.\n");
1226 goto err_release_region;
1228 SET_NETDEV_DEV(dev, &pdev->dev);
1230 if (pcnet32_debug & NETIF_MSG_PROBE)
1231 printk(KERN_INFO PFX "%s at %#3lx,", chipname, ioaddr);
1233 /* In most chips, after a chip reset, the ethernet address is read from the
1234 * station address PROM at the base address and programmed into the
1235 * "Physical Address Registers" CSR12-14.
1236 * As a precautionary measure, we read the PROM values and complain if
1237 * they disagree with the CSRs. Either way, we use the CSR values, and
1238 * double check that they are valid.
1240 for (i = 0; i < 3; i++) {
1242 val = a->read_csr(ioaddr, i+12) & 0x0ffff;
1243 /* There may be endianness issues here. */
1244 dev->dev_addr[2*i] = val & 0x0ff;
1245 dev->dev_addr[2*i+1] = (val >> 8) & 0x0ff;
1248 /* read PROM address and compare with CSR address */
1249 for (i = 0; i < 6; i++)
1250 promaddr[i] = inb(ioaddr + i);
1252 if (memcmp(promaddr, dev->dev_addr, 6)
1253 || !is_valid_ether_addr(dev->dev_addr)) {
1255 if (is_valid_ether_addr(promaddr)) {
1257 if (!is_valid_ether_addr(dev->dev_addr)
1258 && is_valid_ether_addr(promaddr)) {
1260 if (pcnet32_debug & NETIF_MSG_PROBE) {
1261 printk(" warning: CSR address invalid,\n");
1262 printk(KERN_INFO " using instead PROM address of");
1264 memcpy(dev->dev_addr, promaddr, 6);
1267 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
1269 /* if the ethernet address is not valid, force to 00:00:00:00:00:00 */
1270 if (!is_valid_ether_addr(dev->perm_addr))
1271 memset(dev->dev_addr, 0, sizeof(dev->dev_addr));
1273 if (pcnet32_debug & NETIF_MSG_PROBE) {
1274 for (i = 0; i < 6; i++)
1275 printk(" %2.2x", dev->dev_addr[i]);
1277 /* Version 0x2623 and 0x2624 */
1278 if (((chip_version + 1) & 0xfffe) == 0x2624) {
1279 i = a->read_csr(ioaddr, 80) & 0x0C00; /* Check tx_start_pt */
1280 printk("\n" KERN_INFO " tx_start_pt(0x%04x):",i);
1282 case 0: printk(" 20 bytes,"); break;
1283 case 1: printk(" 64 bytes,"); break;
1284 case 2: printk(" 128 bytes,"); break;
1285 case 3: printk("~220 bytes,"); break;
1287 i = a->read_bcr(ioaddr, 18); /* Check Burst/Bus control */
1288 printk(" BCR18(%x):",i&0xffff);
1289 if (i & (1<<5)) printk("BurstWrEn ");
1290 if (i & (1<<6)) printk("BurstRdEn ");
1291 if (i & (1<<7)) printk("DWordIO ");
1292 if (i & (1<<11)) printk("NoUFlow ");
1293 i = a->read_bcr(ioaddr, 25);
1294 printk("\n" KERN_INFO " SRAMSIZE=0x%04x,",i<<8);
1295 i = a->read_bcr(ioaddr, 26);
1296 printk(" SRAM_BND=0x%04x,",i<<8);
1297 i = a->read_bcr(ioaddr, 27);
1298 if (i & (1<<14)) printk("LowLatRx");
1302 dev->base_addr = ioaddr;
1303 /* pci_alloc_consistent returns page-aligned memory, so we do not have to check the alignment */
1304 if ((lp = pci_alloc_consistent(pdev, sizeof(*lp), &lp_dma_addr)) == NULL) {
1305 if (pcnet32_debug & NETIF_MSG_PROBE)
1306 printk(KERN_ERR PFX "Consistent memory allocation failed.\n");
1308 goto err_free_netdev;
1311 memset(lp, 0, sizeof(*lp));
1312 lp->dma_addr = lp_dma_addr;
1315 spin_lock_init(&lp->lock);
1317 SET_MODULE_OWNER(dev);
1318 SET_NETDEV_DEV(dev, &pdev->dev);
1320 lp->name = chipname;
1321 lp->shared_irq = shared;
1322 lp->tx_ring_size = TX_RING_SIZE; /* default tx ring size */
1323 lp->rx_ring_size = RX_RING_SIZE; /* default rx ring size */
1324 lp->tx_mod_mask = lp->tx_ring_size - 1;
1325 lp->rx_mod_mask = lp->rx_ring_size - 1;
1326 lp->tx_len_bits = (PCNET32_LOG_TX_BUFFERS << 12);
1327 lp->rx_len_bits = (PCNET32_LOG_RX_BUFFERS << 4);
1328 lp->mii_if.full_duplex = fdx;
1329 lp->mii_if.phy_id_mask = 0x1f;
1330 lp->mii_if.reg_num_mask = 0x1f;
1331 lp->dxsuflo = dxsuflo;
1333 lp->msg_enable = pcnet32_debug;
1334 if ((cards_found >= MAX_UNITS) || (options[cards_found] > sizeof(options_mapping)))
1335 lp->options = PCNET32_PORT_ASEL;
1337 lp->options = options_mapping[options[cards_found]];
1338 lp->mii_if.dev = dev;
1339 lp->mii_if.mdio_read = mdio_read;
1340 lp->mii_if.mdio_write = mdio_write;
1342 if (fdx && !(lp->options & PCNET32_PORT_ASEL) &&
1343 ((cards_found>=MAX_UNITS) || full_duplex[cards_found]))
1344 lp->options |= PCNET32_PORT_FD;
1347 if (pcnet32_debug & NETIF_MSG_PROBE)
1348 printk(KERN_ERR PFX "No access methods\n");
1350 goto err_free_consistent;
1354 /* prior to register_netdev, dev->name is not yet correct */
1355 if (pcnet32_alloc_ring(dev, pci_name(lp->pci_dev))) {
1359 /* detect special T1/E1 WAN card by checking for MAC address */
1360 if (dev->dev_addr[0] == 0x00 && dev->dev_addr[1] == 0xe0
1361 && dev->dev_addr[2] == 0x75)
1362 lp->options = PCNET32_PORT_FD | PCNET32_PORT_GPSI;
1364 lp->init_block.mode = le16_to_cpu(0x0003); /* Disable Rx and Tx. */
1365 lp->init_block.tlen_rlen = le16_to_cpu(lp->tx_len_bits | lp->rx_len_bits);
1366 for (i = 0; i < 6; i++)
1367 lp->init_block.phys_addr[i] = dev->dev_addr[i];
1368 lp->init_block.filter[0] = 0x00000000;
1369 lp->init_block.filter[1] = 0x00000000;
1370 lp->init_block.rx_ring = (u32)le32_to_cpu(lp->rx_ring_dma_addr);
1371 lp->init_block.tx_ring = (u32)le32_to_cpu(lp->tx_ring_dma_addr);
1373 /* switch pcnet32 to 32bit mode */
1374 a->write_bcr(ioaddr, 20, 2);
1376 a->write_csr(ioaddr, 1, (lp->dma_addr + offsetof(struct pcnet32_private,
1377 init_block)) & 0xffff);
1378 a->write_csr(ioaddr, 2, (lp->dma_addr + offsetof(struct pcnet32_private,
1379 init_block)) >> 16);
1381 if (pdev) { /* use the IRQ provided by PCI */
1382 dev->irq = pdev->irq;
1383 if (pcnet32_debug & NETIF_MSG_PROBE)
1384 printk(" assigned IRQ %d.\n", dev->irq);
1386 unsigned long irq_mask = probe_irq_on();
1389 * To auto-IRQ we enable the initialization-done and DMA error
1390 * interrupts. For ISA boards we get a DMA error, but VLB and PCI
1393 /* Trigger an initialization just for the interrupt. */
1394 a->write_csr (ioaddr, 0, 0x41);
1397 dev->irq = probe_irq_off (irq_mask);
1399 if (pcnet32_debug & NETIF_MSG_PROBE)
1400 printk(", failed to detect IRQ line.\n");
1404 if (pcnet32_debug & NETIF_MSG_PROBE)
1405 printk(", probed IRQ %d.\n", dev->irq);
1408 /* Set the mii phy_id so that we can query the link state */
1410 lp->mii_if.phy_id = ((lp->a.read_bcr (ioaddr, 33)) >> 5) & 0x1f;
1412 init_timer (&lp->watchdog_timer);
1413 lp->watchdog_timer.data = (unsigned long) dev;
1414 lp->watchdog_timer.function = (void *) &pcnet32_watchdog;
1416 /* The PCNET32-specific entries in the device structure. */
1417 dev->open = &pcnet32_open;
1418 dev->hard_start_xmit = &pcnet32_start_xmit;
1419 dev->stop = &pcnet32_close;
1420 dev->get_stats = &pcnet32_get_stats;
1421 dev->set_multicast_list = &pcnet32_set_multicast_list;
1422 dev->do_ioctl = &pcnet32_ioctl;
1423 dev->ethtool_ops = &pcnet32_ethtool_ops;
1424 dev->tx_timeout = pcnet32_tx_timeout;
1425 dev->watchdog_timeo = (5*HZ);
1427 #ifdef CONFIG_NET_POLL_CONTROLLER
1428 dev->poll_controller = pcnet32_poll_controller;
1431 /* Fill in the generic fields of the device structure. */
1432 if (register_netdev(dev))
1436 pci_set_drvdata(pdev, dev);
1438 lp->next = pcnet32_dev;
1442 if (pcnet32_debug & NETIF_MSG_PROBE)
1443 printk(KERN_INFO "%s: registered as %s\n", dev->name, lp->name);
1446 /* enable LED writes */
1447 a->write_bcr(ioaddr, 2, a->read_bcr(ioaddr, 2) | 0x1000);
1452 pcnet32_free_ring(dev);
1453 err_free_consistent:
1454 pci_free_consistent(lp->pci_dev, sizeof(*lp), lp, lp->dma_addr);
1458 release_region(ioaddr, PCNET32_TOTAL_SIZE);
1463 /* if any allocation fails, caller must also call pcnet32_free_ring */
1464 static int pcnet32_alloc_ring(struct net_device *dev, char *name)
1466 struct pcnet32_private *lp = dev->priv;
1468 lp->tx_ring = pci_alloc_consistent(lp->pci_dev,
1469 sizeof(struct pcnet32_tx_head) * lp->tx_ring_size,
1470 &lp->tx_ring_dma_addr);
1471 if (lp->tx_ring == NULL) {
1472 if (pcnet32_debug & NETIF_MSG_DRV)
1473 printk("\n" KERN_ERR PFX "%s: Consistent memory allocation failed.\n",
1478 lp->rx_ring = pci_alloc_consistent(lp->pci_dev,
1479 sizeof(struct pcnet32_rx_head) * lp->rx_ring_size,
1480 &lp->rx_ring_dma_addr);
1481 if (lp->rx_ring == NULL) {
1482 if (pcnet32_debug & NETIF_MSG_DRV)
1483 printk("\n" KERN_ERR PFX "%s: Consistent memory allocation failed.\n",
1488 lp->tx_dma_addr = kmalloc(sizeof(dma_addr_t) * lp->tx_ring_size,
1490 if (!lp->tx_dma_addr) {
1491 if (pcnet32_debug & NETIF_MSG_DRV)
1492 printk("\n" KERN_ERR PFX "%s: Memory allocation failed.\n", name);
1495 memset(lp->tx_dma_addr, 0, sizeof(dma_addr_t) * lp->tx_ring_size);
1497 lp->rx_dma_addr = kmalloc(sizeof(dma_addr_t) * lp->rx_ring_size,
1499 if (!lp->rx_dma_addr) {
1500 if (pcnet32_debug & NETIF_MSG_DRV)
1501 printk("\n" KERN_ERR PFX "%s: Memory allocation failed.\n", name);
1504 memset(lp->rx_dma_addr, 0, sizeof(dma_addr_t) * lp->rx_ring_size);
1506 lp->tx_skbuff = kmalloc(sizeof(struct sk_buff *) * lp->tx_ring_size,
1508 if (!lp->tx_skbuff) {
1509 if (pcnet32_debug & NETIF_MSG_DRV)
1510 printk("\n" KERN_ERR PFX "%s: Memory allocation failed.\n", name);
1513 memset(lp->tx_skbuff, 0, sizeof(struct sk_buff *) * lp->tx_ring_size);
1515 lp->rx_skbuff = kmalloc(sizeof(struct sk_buff *) * lp->rx_ring_size,
1517 if (!lp->rx_skbuff) {
1518 if (pcnet32_debug & NETIF_MSG_DRV)
1519 printk("\n" KERN_ERR PFX "%s: Memory allocation failed.\n", name);
1522 memset(lp->rx_skbuff, 0, sizeof(struct sk_buff *) * lp->rx_ring_size);
1528 static void pcnet32_free_ring(struct net_device *dev)
1530 struct pcnet32_private *lp = dev->priv;
1532 kfree(lp->tx_skbuff);
1533 lp->tx_skbuff = NULL;
1535 kfree(lp->rx_skbuff);
1536 lp->rx_skbuff = NULL;
1538 kfree(lp->tx_dma_addr);
1539 lp->tx_dma_addr = NULL;
1541 kfree(lp->rx_dma_addr);
1542 lp->rx_dma_addr = NULL;
1545 pci_free_consistent(lp->pci_dev, sizeof(struct pcnet32_tx_head) * lp->tx_ring_size,
1546 lp->tx_ring, lp->tx_ring_dma_addr);
1551 pci_free_consistent(lp->pci_dev, sizeof(struct pcnet32_rx_head) * lp->rx_ring_size,
1552 lp->rx_ring, lp->rx_ring_dma_addr);
1559 pcnet32_open(struct net_device *dev)
1561 struct pcnet32_private *lp = dev->priv;
1562 unsigned long ioaddr = dev->base_addr;
1566 unsigned long flags;
1568 if (request_irq(dev->irq, &pcnet32_interrupt,
1569 lp->shared_irq ? SA_SHIRQ : 0, dev->name, (void *)dev)) {
1573 spin_lock_irqsave(&lp->lock, flags);
1574 /* Check for a valid station address */
1575 if (!is_valid_ether_addr(dev->dev_addr)) {
1580 /* Reset the PCNET32 */
1581 lp->a.reset (ioaddr);
1583 /* switch pcnet32 to 32bit mode */
1584 lp->a.write_bcr (ioaddr, 20, 2);
1586 if (netif_msg_ifup(lp))
1587 printk(KERN_DEBUG "%s: pcnet32_open() irq %d tx/rx rings %#x/%#x init %#x.\n",
1588 dev->name, dev->irq,
1589 (u32) (lp->tx_ring_dma_addr),
1590 (u32) (lp->rx_ring_dma_addr),
1591 (u32) (lp->dma_addr + offsetof(struct pcnet32_private, init_block)));
1593 /* set/reset autoselect bit */
1594 val = lp->a.read_bcr (ioaddr, 2) & ~2;
1595 if (lp->options & PCNET32_PORT_ASEL)
1597 lp->a.write_bcr (ioaddr, 2, val);
1599 /* handle full duplex setting */
1600 if (lp->mii_if.full_duplex) {
1601 val = lp->a.read_bcr (ioaddr, 9) & ~3;
1602 if (lp->options & PCNET32_PORT_FD) {
1604 if (lp->options == (PCNET32_PORT_FD | PCNET32_PORT_AUI))
1606 } else if (lp->options & PCNET32_PORT_ASEL) {
1607 /* workaround of xSeries250, turn on for 79C975 only */
1608 i = ((lp->a.read_csr(ioaddr, 88) |
1609 (lp->a.read_csr(ioaddr,89) << 16)) >> 12) & 0xffff;
1613 lp->a.write_bcr (ioaddr, 9, val);
1616 /* set/reset GPSI bit in test register */
1617 val = lp->a.read_csr (ioaddr, 124) & ~0x10;
1618 if ((lp->options & PCNET32_PORT_PORTSEL) == PCNET32_PORT_GPSI)
1620 lp->a.write_csr (ioaddr, 124, val);
1622 /* Allied Telesyn AT 2700/2701 FX are 100Mbit only and do not negotiate */
1623 if (lp->pci_dev->subsystem_vendor == PCI_VENDOR_ID_AT &&
1624 (lp->pci_dev->subsystem_device == PCI_SUBDEVICE_ID_AT_2700FX ||
1625 lp->pci_dev->subsystem_device == PCI_SUBDEVICE_ID_AT_2701FX)) {
1626 if (lp->options & PCNET32_PORT_ASEL) {
1627 lp->options = PCNET32_PORT_FD | PCNET32_PORT_100;
1628 if (netif_msg_link(lp))
1629 printk(KERN_DEBUG "%s: Setting 100Mb-Full Duplex.\n",
1635 * 24 Jun 2004 according AMD, in order to change the PHY,
1636 * DANAS (or DISPM for 79C976) must be set; then select the speed,
1637 * duplex, and/or enable auto negotiation, and clear DANAS
1639 if (lp->mii && !(lp->options & PCNET32_PORT_ASEL)) {
1640 lp->a.write_bcr(ioaddr, 32,
1641 lp->a.read_bcr(ioaddr, 32) | 0x0080);
1642 /* disable Auto Negotiation, set 10Mpbs, HD */
1643 val = lp->a.read_bcr(ioaddr, 32) & ~0xb8;
1644 if (lp->options & PCNET32_PORT_FD)
1646 if (lp->options & PCNET32_PORT_100)
1648 lp->a.write_bcr (ioaddr, 32, val);
1650 if (lp->options & PCNET32_PORT_ASEL) {
1651 lp->a.write_bcr(ioaddr, 32,
1652 lp->a.read_bcr(ioaddr, 32) | 0x0080);
1653 /* enable auto negotiate, setup, disable fd */
1654 val = lp->a.read_bcr(ioaddr, 32) & ~0x98;
1656 lp->a.write_bcr(ioaddr, 32, val);
1662 if (lp->dxsuflo) { /* Disable transmit stop on underflow */
1663 val = lp->a.read_csr (ioaddr, 3);
1665 lp->a.write_csr (ioaddr, 3, val);
1669 lp->init_block.mode = le16_to_cpu((lp->options & PCNET32_PORT_PORTSEL) << 7);
1670 pcnet32_load_multicast(dev);
1672 if (pcnet32_init_ring(dev)) {
1677 /* Re-initialize the PCNET32, and start it when done. */
1678 lp->a.write_csr (ioaddr, 1, (lp->dma_addr +
1679 offsetof(struct pcnet32_private, init_block)) & 0xffff);
1680 lp->a.write_csr (ioaddr, 2, (lp->dma_addr +
1681 offsetof(struct pcnet32_private, init_block)) >> 16);
1683 lp->a.write_csr (ioaddr, 4, 0x0915);
1684 lp->a.write_csr (ioaddr, 0, 0x0001);
1686 netif_start_queue(dev);
1688 /* If we have mii, print the link status and start the watchdog */
1690 mii_check_media (&lp->mii_if, netif_msg_link(lp), 1);
1691 mod_timer (&(lp->watchdog_timer), PCNET32_WATCHDOG_TIMEOUT);
1696 if (lp->a.read_csr (ioaddr, 0) & 0x0100)
1699 * We used to clear the InitDone bit, 0x0100, here but Mark Stockton
1700 * reports that doing so triggers a bug in the '974.
1702 lp->a.write_csr (ioaddr, 0, 0x0042);
1704 if (netif_msg_ifup(lp))
1705 printk(KERN_DEBUG "%s: pcnet32 open after %d ticks, init block %#x csr0 %4.4x.\n",
1706 dev->name, i, (u32) (lp->dma_addr +
1707 offsetof(struct pcnet32_private, init_block)),
1708 lp->a.read_csr(ioaddr, 0));
1710 spin_unlock_irqrestore(&lp->lock, flags);
1712 return 0; /* Always succeed */
1715 /* free any allocated skbuffs */
1716 for (i = 0; i < lp->rx_ring_size; i++) {
1717 lp->rx_ring[i].status = 0;
1718 if (lp->rx_skbuff[i]) {
1719 pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[i], PKT_BUF_SZ-2,
1720 PCI_DMA_FROMDEVICE);
1721 dev_kfree_skb(lp->rx_skbuff[i]);
1723 lp->rx_skbuff[i] = NULL;
1724 lp->rx_dma_addr[i] = 0;
1727 pcnet32_free_ring(dev);
1730 * Switch back to 16bit mode to avoid problems with dumb
1731 * DOS packet driver after a warm reboot
1733 lp->a.write_bcr (ioaddr, 20, 4);
1736 spin_unlock_irqrestore(&lp->lock, flags);
1737 free_irq(dev->irq, dev);
1742 * The LANCE has been halted for one reason or another (busmaster memory
1743 * arbitration error, Tx FIFO underflow, driver stopped it to reconfigure,
1744 * etc.). Modern LANCE variants always reload their ring-buffer
1745 * configuration when restarted, so we must reinitialize our ring
1746 * context before restarting. As part of this reinitialization,
1747 * find all packets still on the Tx ring and pretend that they had been
1748 * sent (in effect, drop the packets on the floor) - the higher-level
1749 * protocols will time out and retransmit. It'd be better to shuffle
1750 * these skbs to a temp list and then actually re-Tx them after
1751 * restarting the chip, but I'm too lazy to do so right now. dplatt@3do.com
1755 pcnet32_purge_tx_ring(struct net_device *dev)
1757 struct pcnet32_private *lp = dev->priv;
1760 for (i = 0; i < lp->tx_ring_size; i++) {
1761 lp->tx_ring[i].status = 0; /* CPU owns buffer */
1762 wmb(); /* Make sure adapter sees owner change */
1763 if (lp->tx_skbuff[i]) {
1764 pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[i],
1765 lp->tx_skbuff[i]->len, PCI_DMA_TODEVICE);
1766 dev_kfree_skb_any(lp->tx_skbuff[i]);
1768 lp->tx_skbuff[i] = NULL;
1769 lp->tx_dma_addr[i] = 0;
1774 /* Initialize the PCNET32 Rx and Tx rings. */
1776 pcnet32_init_ring(struct net_device *dev)
1778 struct pcnet32_private *lp = dev->priv;
1782 lp->cur_rx = lp->cur_tx = 0;
1783 lp->dirty_rx = lp->dirty_tx = 0;
1785 for (i = 0; i < lp->rx_ring_size; i++) {
1786 struct sk_buff *rx_skbuff = lp->rx_skbuff[i];
1787 if (rx_skbuff == NULL) {
1788 if (!(rx_skbuff = lp->rx_skbuff[i] = dev_alloc_skb (PKT_BUF_SZ))) {
1789 /* there is not much, we can do at this point */
1790 if (pcnet32_debug & NETIF_MSG_DRV)
1791 printk(KERN_ERR "%s: pcnet32_init_ring dev_alloc_skb failed.\n",
1795 skb_reserve (rx_skbuff, 2);
1799 if (lp->rx_dma_addr[i] == 0)
1800 lp->rx_dma_addr[i] = pci_map_single(lp->pci_dev, rx_skbuff->data,
1801 PKT_BUF_SZ-2, PCI_DMA_FROMDEVICE);
1802 lp->rx_ring[i].base = (u32)le32_to_cpu(lp->rx_dma_addr[i]);
1803 lp->rx_ring[i].buf_length = le16_to_cpu(2-PKT_BUF_SZ);
1804 wmb(); /* Make sure owner changes after all others are visible */
1805 lp->rx_ring[i].status = le16_to_cpu(0x8000);
1807 /* The Tx buffer address is filled in as needed, but we do need to clear
1808 * the upper ownership bit. */
1809 for (i = 0; i < lp->tx_ring_size; i++) {
1810 lp->tx_ring[i].status = 0; /* CPU owns buffer */
1811 wmb(); /* Make sure adapter sees owner change */
1812 lp->tx_ring[i].base = 0;
1813 lp->tx_dma_addr[i] = 0;
1816 lp->init_block.tlen_rlen = le16_to_cpu(lp->tx_len_bits | lp->rx_len_bits);
1817 for (i = 0; i < 6; i++)
1818 lp->init_block.phys_addr[i] = dev->dev_addr[i];
1819 lp->init_block.rx_ring = (u32)le32_to_cpu(lp->rx_ring_dma_addr);
1820 lp->init_block.tx_ring = (u32)le32_to_cpu(lp->tx_ring_dma_addr);
1821 wmb(); /* Make sure all changes are visible */
1825 /* the pcnet32 has been issued a stop or reset. Wait for the stop bit
1826 * then flush the pending transmit operations, re-initialize the ring,
1827 * and tell the chip to initialize.
1830 pcnet32_restart(struct net_device *dev, unsigned int csr0_bits)
1832 struct pcnet32_private *lp = dev->priv;
1833 unsigned long ioaddr = dev->base_addr;
1837 for (i=0; i<100; i++)
1838 if (lp->a.read_csr(ioaddr, 0) & 0x0004)
1841 if (i >= 100 && netif_msg_drv(lp))
1842 printk(KERN_ERR "%s: pcnet32_restart timed out waiting for stop.\n",
1845 pcnet32_purge_tx_ring(dev);
1846 if (pcnet32_init_ring(dev))
1850 lp->a.write_csr (ioaddr, 0, 1);
1853 if (lp->a.read_csr (ioaddr, 0) & 0x0100)
1856 lp->a.write_csr (ioaddr, 0, csr0_bits);
1861 pcnet32_tx_timeout (struct net_device *dev)
1863 struct pcnet32_private *lp = dev->priv;
1864 unsigned long ioaddr = dev->base_addr, flags;
1866 spin_lock_irqsave(&lp->lock, flags);
1867 /* Transmitter timeout, serious problems. */
1868 if (pcnet32_debug & NETIF_MSG_DRV)
1869 printk(KERN_ERR "%s: transmit timed out, status %4.4x, resetting.\n",
1870 dev->name, lp->a.read_csr(ioaddr, 0));
1871 lp->a.write_csr (ioaddr, 0, 0x0004);
1872 lp->stats.tx_errors++;
1873 if (netif_msg_tx_err(lp)) {
1875 printk(KERN_DEBUG " Ring data dump: dirty_tx %d cur_tx %d%s cur_rx %d.",
1876 lp->dirty_tx, lp->cur_tx, lp->tx_full ? " (full)" : "",
1878 for (i = 0 ; i < lp->rx_ring_size; i++)
1879 printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
1880 le32_to_cpu(lp->rx_ring[i].base),
1881 (-le16_to_cpu(lp->rx_ring[i].buf_length)) & 0xffff,
1882 le32_to_cpu(lp->rx_ring[i].msg_length),
1883 le16_to_cpu(lp->rx_ring[i].status));
1884 for (i = 0 ; i < lp->tx_ring_size; i++)
1885 printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
1886 le32_to_cpu(lp->tx_ring[i].base),
1887 (-le16_to_cpu(lp->tx_ring[i].length)) & 0xffff,
1888 le32_to_cpu(lp->tx_ring[i].misc),
1889 le16_to_cpu(lp->tx_ring[i].status));
1892 pcnet32_restart(dev, 0x0042);
1894 dev->trans_start = jiffies;
1895 netif_wake_queue(dev);
1897 spin_unlock_irqrestore(&lp->lock, flags);
1902 pcnet32_start_xmit(struct sk_buff *skb, struct net_device *dev)
1904 struct pcnet32_private *lp = dev->priv;
1905 unsigned long ioaddr = dev->base_addr;
1908 unsigned long flags;
1910 spin_lock_irqsave(&lp->lock, flags);
1912 if (netif_msg_tx_queued(lp)) {
1913 printk(KERN_DEBUG "%s: pcnet32_start_xmit() called, csr0 %4.4x.\n",
1914 dev->name, lp->a.read_csr(ioaddr, 0));
1917 /* Default status -- will not enable Successful-TxDone
1918 * interrupt when that option is available to us.
1922 /* Fill in a Tx ring entry */
1924 /* Mask to ring buffer boundary. */
1925 entry = lp->cur_tx & lp->tx_mod_mask;
1927 /* Caution: the write order is important here, set the status
1928 * with the "ownership" bits last. */
1930 lp->tx_ring[entry].length = le16_to_cpu(-skb->len);
1932 lp->tx_ring[entry].misc = 0x00000000;
1934 lp->tx_skbuff[entry] = skb;
1935 lp->tx_dma_addr[entry] = pci_map_single(lp->pci_dev, skb->data, skb->len,
1937 lp->tx_ring[entry].base = (u32)le32_to_cpu(lp->tx_dma_addr[entry]);
1938 wmb(); /* Make sure owner changes after all others are visible */
1939 lp->tx_ring[entry].status = le16_to_cpu(status);
1942 lp->stats.tx_bytes += skb->len;
1944 /* Trigger an immediate send poll. */
1945 lp->a.write_csr (ioaddr, 0, 0x0048);
1947 dev->trans_start = jiffies;
1949 if (lp->tx_ring[(entry+1) & lp->tx_mod_mask].base != 0) {
1951 netif_stop_queue(dev);
1953 spin_unlock_irqrestore(&lp->lock, flags);
1957 /* The PCNET32 interrupt handler. */
1959 pcnet32_interrupt(int irq, void *dev_id, struct pt_regs * regs)
1961 struct net_device *dev = dev_id;
1962 struct pcnet32_private *lp;
1963 unsigned long ioaddr;
1965 int boguscnt = max_interrupt_work;
1969 if (pcnet32_debug & NETIF_MSG_INTR)
1970 printk (KERN_DEBUG "%s(): irq %d for unknown device\n",
1975 ioaddr = dev->base_addr;
1978 spin_lock(&lp->lock);
1980 rap = lp->a.read_rap(ioaddr);
1981 while ((csr0 = lp->a.read_csr (ioaddr, 0)) & 0x8f00 && --boguscnt >= 0) {
1982 if (csr0 == 0xffff) {
1983 break; /* PCMCIA remove happened */
1985 /* Acknowledge all of the current interrupt sources ASAP. */
1986 lp->a.write_csr (ioaddr, 0, csr0 & ~0x004f);
1990 if (netif_msg_intr(lp))
1991 printk(KERN_DEBUG "%s: interrupt csr0=%#2.2x new csr=%#2.2x.\n",
1992 dev->name, csr0, lp->a.read_csr (ioaddr, 0));
1994 if (csr0 & 0x0400) /* Rx interrupt */
1997 if (csr0 & 0x0200) { /* Tx-done interrupt */
1998 unsigned int dirty_tx = lp->dirty_tx;
2001 while (dirty_tx != lp->cur_tx) {
2002 int entry = dirty_tx & lp->tx_mod_mask;
2003 int status = (short)le16_to_cpu(lp->tx_ring[entry].status);
2006 break; /* It still hasn't been Txed */
2008 lp->tx_ring[entry].base = 0;
2010 if (status & 0x4000) {
2011 /* There was an major error, log it. */
2012 int err_status = le32_to_cpu(lp->tx_ring[entry].misc);
2013 lp->stats.tx_errors++;
2014 if (netif_msg_tx_err(lp))
2015 printk(KERN_ERR "%s: Tx error status=%04x err_status=%08x\n",
2016 dev->name, status, err_status);
2017 if (err_status & 0x04000000) lp->stats.tx_aborted_errors++;
2018 if (err_status & 0x08000000) lp->stats.tx_carrier_errors++;
2019 if (err_status & 0x10000000) lp->stats.tx_window_errors++;
2021 if (err_status & 0x40000000) {
2022 lp->stats.tx_fifo_errors++;
2023 /* Ackk! On FIFO errors the Tx unit is turned off! */
2024 /* Remove this verbosity later! */
2025 if (netif_msg_tx_err(lp))
2026 printk(KERN_ERR "%s: Tx FIFO error! CSR0=%4.4x\n",
2031 if (err_status & 0x40000000) {
2032 lp->stats.tx_fifo_errors++;
2033 if (! lp->dxsuflo) { /* If controller doesn't recover ... */
2034 /* Ackk! On FIFO errors the Tx unit is turned off! */
2035 /* Remove this verbosity later! */
2036 if (netif_msg_tx_err(lp))
2037 printk(KERN_ERR "%s: Tx FIFO error! CSR0=%4.4x\n",
2044 if (status & 0x1800)
2045 lp->stats.collisions++;
2046 lp->stats.tx_packets++;
2049 /* We must free the original skb */
2050 if (lp->tx_skbuff[entry]) {
2051 pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[entry],
2052 lp->tx_skbuff[entry]->len, PCI_DMA_TODEVICE);
2053 dev_kfree_skb_irq(lp->tx_skbuff[entry]);
2054 lp->tx_skbuff[entry] = NULL;
2055 lp->tx_dma_addr[entry] = 0;
2060 delta = (lp->cur_tx - dirty_tx) & (lp->tx_mod_mask + lp->tx_ring_size);
2061 if (delta > lp->tx_ring_size) {
2062 if (netif_msg_drv(lp))
2063 printk(KERN_ERR "%s: out-of-sync dirty pointer, %d vs. %d, full=%d.\n",
2064 dev->name, dirty_tx, lp->cur_tx, lp->tx_full);
2065 dirty_tx += lp->tx_ring_size;
2066 delta -= lp->tx_ring_size;
2070 netif_queue_stopped(dev) &&
2071 delta < lp->tx_ring_size - 2) {
2072 /* The ring is no longer full, clear tbusy. */
2074 netif_wake_queue (dev);
2076 lp->dirty_tx = dirty_tx;
2079 /* Log misc errors. */
2080 if (csr0 & 0x4000) lp->stats.tx_errors++; /* Tx babble. */
2081 if (csr0 & 0x1000) {
2083 * this happens when our receive ring is full. This shouldn't
2084 * be a problem as we will see normal rx interrupts for the frames
2085 * in the receive ring. But there are some PCI chipsets (I can
2086 * reproduce this on SP3G with Intel saturn chipset) which have
2087 * sometimes problems and will fill up the receive ring with
2088 * error descriptors. In this situation we don't get a rx
2089 * interrupt, but a missed frame interrupt sooner or later.
2090 * So we try to clean up our receive ring here.
2093 lp->stats.rx_errors++; /* Missed a Rx frame. */
2095 if (csr0 & 0x0800) {
2096 if (netif_msg_drv(lp))
2097 printk(KERN_ERR "%s: Bus master arbitration failure, status %4.4x.\n",
2099 /* unlike for the lance, there is no restart needed */
2103 /* reset the chip to clear the error condition, then restart */
2104 lp->a.reset(ioaddr);
2105 lp->a.write_csr(ioaddr, 4, 0x0915);
2106 pcnet32_restart(dev, 0x0002);
2107 netif_wake_queue(dev);
2111 /* Set interrupt enable. */
2112 lp->a.write_csr (ioaddr, 0, 0x0040);
2113 lp->a.write_rap (ioaddr,rap);
2115 if (netif_msg_intr(lp))
2116 printk(KERN_DEBUG "%s: exiting interrupt, csr0=%#4.4x.\n",
2117 dev->name, lp->a.read_csr (ioaddr, 0));
2119 spin_unlock(&lp->lock);
2125 pcnet32_rx(struct net_device *dev)
2127 struct pcnet32_private *lp = dev->priv;
2128 int entry = lp->cur_rx & lp->rx_mod_mask;
2129 int boguscnt = lp->rx_ring_size / 2;
2131 /* If we own the next entry, it's a new packet. Send it up. */
2132 while ((short)le16_to_cpu(lp->rx_ring[entry].status) >= 0) {
2133 int status = (short)le16_to_cpu(lp->rx_ring[entry].status) >> 8;
2135 if (status != 0x03) { /* There was an error. */
2137 * There is a tricky error noted by John Murphy,
2138 * <murf@perftech.com> to Russ Nelson: Even with full-sized
2139 * buffers it's possible for a jabber packet to use two
2140 * buffers, with only the last correctly noting the error.
2142 if (status & 0x01) /* Only count a general error at the */
2143 lp->stats.rx_errors++; /* end of a packet.*/
2144 if (status & 0x20) lp->stats.rx_frame_errors++;
2145 if (status & 0x10) lp->stats.rx_over_errors++;
2146 if (status & 0x08) lp->stats.rx_crc_errors++;
2147 if (status & 0x04) lp->stats.rx_fifo_errors++;
2148 lp->rx_ring[entry].status &= le16_to_cpu(0x03ff);
2150 /* Malloc up new buffer, compatible with net-2e. */
2151 short pkt_len = (le32_to_cpu(lp->rx_ring[entry].msg_length) & 0xfff)-4;
2152 struct sk_buff *skb;
2154 /* Discard oversize frames. */
2155 if (unlikely(pkt_len > PKT_BUF_SZ - 2)) {
2156 if (netif_msg_drv(lp))
2157 printk(KERN_ERR "%s: Impossible packet size %d!\n",
2158 dev->name, pkt_len);
2159 lp->stats.rx_errors++;
2160 } else if (pkt_len < 60) {
2161 if (netif_msg_rx_err(lp))
2162 printk(KERN_ERR "%s: Runt packet!\n", dev->name);
2163 lp->stats.rx_errors++;
2165 int rx_in_place = 0;
2167 if (pkt_len > rx_copybreak) {
2168 struct sk_buff *newskb;
2170 if ((newskb = dev_alloc_skb(PKT_BUF_SZ))) {
2171 skb_reserve (newskb, 2);
2172 skb = lp->rx_skbuff[entry];
2173 pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[entry],
2174 PKT_BUF_SZ-2, PCI_DMA_FROMDEVICE);
2175 skb_put (skb, pkt_len);
2176 lp->rx_skbuff[entry] = newskb;
2178 lp->rx_dma_addr[entry] =
2179 pci_map_single(lp->pci_dev, newskb->data,
2180 PKT_BUF_SZ-2, PCI_DMA_FROMDEVICE);
2181 lp->rx_ring[entry].base = le32_to_cpu(lp->rx_dma_addr[entry]);
2186 skb = dev_alloc_skb(pkt_len+2);
2191 if (netif_msg_drv(lp))
2192 printk(KERN_ERR "%s: Memory squeeze, deferring packet.\n",
2194 for (i = 0; i < lp->rx_ring_size; i++)
2195 if ((short)le16_to_cpu(lp->rx_ring[(entry+i)
2196 & lp->rx_mod_mask].status) < 0)
2199 if (i > lp->rx_ring_size -2) {
2200 lp->stats.rx_dropped++;
2201 lp->rx_ring[entry].status |= le16_to_cpu(0x8000);
2202 wmb(); /* Make sure adapter sees owner change */
2209 skb_reserve(skb,2); /* 16 byte align */
2210 skb_put(skb,pkt_len); /* Make room */
2211 pci_dma_sync_single_for_cpu(lp->pci_dev,
2212 lp->rx_dma_addr[entry],
2214 PCI_DMA_FROMDEVICE);
2215 eth_copy_and_sum(skb,
2216 (unsigned char *)(lp->rx_skbuff[entry]->data),
2218 pci_dma_sync_single_for_device(lp->pci_dev,
2219 lp->rx_dma_addr[entry],
2221 PCI_DMA_FROMDEVICE);
2223 lp->stats.rx_bytes += skb->len;
2224 skb->protocol=eth_type_trans(skb,dev);
2226 dev->last_rx = jiffies;
2227 lp->stats.rx_packets++;
2231 * The docs say that the buffer length isn't touched, but Andrew Boyd
2232 * of QNX reports that some revs of the 79C965 clear it.
2234 lp->rx_ring[entry].buf_length = le16_to_cpu(2-PKT_BUF_SZ);
2235 wmb(); /* Make sure owner changes after all others are visible */
2236 lp->rx_ring[entry].status |= le16_to_cpu(0x8000);
2237 entry = (++lp->cur_rx) & lp->rx_mod_mask;
2238 if (--boguscnt <= 0) break; /* don't stay in loop forever */
2245 pcnet32_close(struct net_device *dev)
2247 unsigned long ioaddr = dev->base_addr;
2248 struct pcnet32_private *lp = dev->priv;
2250 unsigned long flags;
2252 del_timer_sync(&lp->watchdog_timer);
2254 netif_stop_queue(dev);
2256 spin_lock_irqsave(&lp->lock, flags);
2258 lp->stats.rx_missed_errors = lp->a.read_csr (ioaddr, 112);
2260 if (netif_msg_ifdown(lp))
2261 printk(KERN_DEBUG "%s: Shutting down ethercard, status was %2.2x.\n",
2262 dev->name, lp->a.read_csr (ioaddr, 0));
2264 /* We stop the PCNET32 here -- it occasionally polls memory if we don't. */
2265 lp->a.write_csr (ioaddr, 0, 0x0004);
2268 * Switch back to 16bit mode to avoid problems with dumb
2269 * DOS packet driver after a warm reboot
2271 lp->a.write_bcr (ioaddr, 20, 4);
2273 spin_unlock_irqrestore(&lp->lock, flags);
2275 free_irq(dev->irq, dev);
2277 spin_lock_irqsave(&lp->lock, flags);
2279 /* free all allocated skbuffs */
2280 for (i = 0; i < lp->rx_ring_size; i++) {
2281 lp->rx_ring[i].status = 0;
2282 wmb(); /* Make sure adapter sees owner change */
2283 if (lp->rx_skbuff[i]) {
2284 pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[i], PKT_BUF_SZ-2,
2285 PCI_DMA_FROMDEVICE);
2286 dev_kfree_skb(lp->rx_skbuff[i]);
2288 lp->rx_skbuff[i] = NULL;
2289 lp->rx_dma_addr[i] = 0;
2292 for (i = 0; i < lp->tx_ring_size; i++) {
2293 lp->tx_ring[i].status = 0; /* CPU owns buffer */
2294 wmb(); /* Make sure adapter sees owner change */
2295 if (lp->tx_skbuff[i]) {
2296 pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[i],
2297 lp->tx_skbuff[i]->len, PCI_DMA_TODEVICE);
2298 dev_kfree_skb(lp->tx_skbuff[i]);
2300 lp->tx_skbuff[i] = NULL;
2301 lp->tx_dma_addr[i] = 0;
2304 spin_unlock_irqrestore(&lp->lock, flags);
2309 static struct net_device_stats *
2310 pcnet32_get_stats(struct net_device *dev)
2312 struct pcnet32_private *lp = dev->priv;
2313 unsigned long ioaddr = dev->base_addr;
2315 unsigned long flags;
2317 spin_lock_irqsave(&lp->lock, flags);
2318 saved_addr = lp->a.read_rap(ioaddr);
2319 lp->stats.rx_missed_errors = lp->a.read_csr (ioaddr, 112);
2320 lp->a.write_rap(ioaddr, saved_addr);
2321 spin_unlock_irqrestore(&lp->lock, flags);
2326 /* taken from the sunlance driver, which it took from the depca driver */
2327 static void pcnet32_load_multicast (struct net_device *dev)
2329 struct pcnet32_private *lp = dev->priv;
2330 volatile struct pcnet32_init_block *ib = &lp->init_block;
2331 volatile u16 *mcast_table = (u16 *)&ib->filter;
2332 struct dev_mc_list *dmi=dev->mc_list;
2337 /* set all multicast bits */
2338 if (dev->flags & IFF_ALLMULTI) {
2339 ib->filter[0] = 0xffffffff;
2340 ib->filter[1] = 0xffffffff;
2343 /* clear the multicast filter */
2348 for (i = 0; i < dev->mc_count; i++) {
2349 addrs = dmi->dmi_addr;
2352 /* multicast address? */
2356 crc = ether_crc_le(6, addrs);
2358 mcast_table [crc >> 4] = le16_to_cpu(
2359 le16_to_cpu(mcast_table [crc >> 4]) | (1 << (crc & 0xf)));
2366 * Set or clear the multicast filter for this adaptor.
2368 static void pcnet32_set_multicast_list(struct net_device *dev)
2370 unsigned long ioaddr = dev->base_addr, flags;
2371 struct pcnet32_private *lp = dev->priv;
2373 spin_lock_irqsave(&lp->lock, flags);
2374 if (dev->flags&IFF_PROMISC) {
2375 /* Log any net taps. */
2376 if (netif_msg_hw(lp))
2377 printk(KERN_INFO "%s: Promiscuous mode enabled.\n", dev->name);
2378 lp->init_block.mode = le16_to_cpu(0x8000 | (lp->options & PCNET32_PORT_PORTSEL) << 7);
2380 lp->init_block.mode = le16_to_cpu((lp->options & PCNET32_PORT_PORTSEL) << 7);
2381 pcnet32_load_multicast (dev);
2384 lp->a.write_csr (ioaddr, 0, 0x0004); /* Temporarily stop the lance. */
2385 pcnet32_restart(dev, 0x0042); /* Resume normal operation */
2386 netif_wake_queue(dev);
2388 spin_unlock_irqrestore(&lp->lock, flags);
2391 /* This routine assumes that the lp->lock is held */
2392 static int mdio_read(struct net_device *dev, int phy_id, int reg_num)
2394 struct pcnet32_private *lp = dev->priv;
2395 unsigned long ioaddr = dev->base_addr;
2401 lp->a.write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
2402 val_out = lp->a.read_bcr(ioaddr, 34);
2407 /* This routine assumes that the lp->lock is held */
2408 static void mdio_write(struct net_device *dev, int phy_id, int reg_num, int val)
2410 struct pcnet32_private *lp = dev->priv;
2411 unsigned long ioaddr = dev->base_addr;
2416 lp->a.write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
2417 lp->a.write_bcr(ioaddr, 34, val);
2420 static int pcnet32_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2422 struct pcnet32_private *lp = dev->priv;
2424 unsigned long flags;
2426 /* SIOC[GS]MIIxxx ioctls */
2428 spin_lock_irqsave(&lp->lock, flags);
2429 rc = generic_mii_ioctl(&lp->mii_if, if_mii(rq), cmd, NULL);
2430 spin_unlock_irqrestore(&lp->lock, flags);
2438 static void pcnet32_watchdog(struct net_device *dev)
2440 struct pcnet32_private *lp = dev->priv;
2441 unsigned long flags;
2443 /* Print the link status if it has changed */
2445 spin_lock_irqsave(&lp->lock, flags);
2446 mii_check_media (&lp->mii_if, netif_msg_link(lp), 0);
2447 spin_unlock_irqrestore(&lp->lock, flags);
2450 mod_timer (&(lp->watchdog_timer), PCNET32_WATCHDOG_TIMEOUT);
2453 static void __devexit pcnet32_remove_one(struct pci_dev *pdev)
2455 struct net_device *dev = pci_get_drvdata(pdev);
2458 struct pcnet32_private *lp = dev->priv;
2460 unregister_netdev(dev);
2461 pcnet32_free_ring(dev);
2462 release_region(dev->base_addr, PCNET32_TOTAL_SIZE);
2463 pci_free_consistent(lp->pci_dev, sizeof(*lp), lp, lp->dma_addr);
2465 pci_disable_device(pdev);
2466 pci_set_drvdata(pdev, NULL);
2470 static struct pci_driver pcnet32_driver = {
2472 .probe = pcnet32_probe_pci,
2473 .remove = __devexit_p(pcnet32_remove_one),
2474 .id_table = pcnet32_pci_tbl,
2477 /* An additional parameter that may be passed in... */
2478 static int debug = -1;
2479 static int tx_start_pt = -1;
2480 static int pcnet32_have_pci;
2482 module_param(debug, int, 0);
2483 MODULE_PARM_DESC(debug, DRV_NAME " debug level");
2484 module_param(max_interrupt_work, int, 0);
2485 MODULE_PARM_DESC(max_interrupt_work, DRV_NAME " maximum events handled per interrupt");
2486 module_param(rx_copybreak, int, 0);
2487 MODULE_PARM_DESC(rx_copybreak, DRV_NAME " copy breakpoint for copy-only-tiny-frames");
2488 module_param(tx_start_pt, int, 0);
2489 MODULE_PARM_DESC(tx_start_pt, DRV_NAME " transmit start point (0-3)");
2490 module_param(pcnet32vlb, int, 0);
2491 MODULE_PARM_DESC(pcnet32vlb, DRV_NAME " Vesa local bus (VLB) support (0/1)");
2492 module_param_array(options, int, NULL, 0);
2493 MODULE_PARM_DESC(options, DRV_NAME " initial option setting(s) (0-15)");
2494 module_param_array(full_duplex, int, NULL, 0);
2495 MODULE_PARM_DESC(full_duplex, DRV_NAME " full duplex setting(s) (1)");
2496 /* Module Parameter for HomePNA cards added by Patrick Simmons, 2004 */
2497 module_param_array(homepna, int, NULL, 0);
2498 MODULE_PARM_DESC(homepna, DRV_NAME " mode for 79C978 cards (1 for HomePNA, 0 for Ethernet, default Ethernet");
2500 MODULE_AUTHOR("Thomas Bogendoerfer");
2501 MODULE_DESCRIPTION("Driver for PCnet32 and PCnetPCI based ethercards");
2502 MODULE_LICENSE("GPL");
2504 #define PCNET32_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
2506 static int __init pcnet32_init_module(void)
2508 printk(KERN_INFO "%s", version);
2510 pcnet32_debug = netif_msg_init(debug, PCNET32_MSG_DEFAULT);
2512 if ((tx_start_pt >= 0) && (tx_start_pt <= 3))
2513 tx_start = tx_start_pt;
2515 /* find the PCI devices */
2516 if (!pci_module_init(&pcnet32_driver))
2517 pcnet32_have_pci = 1;
2519 /* should we find any remaining VLbus devices ? */
2521 pcnet32_probe_vlbus();
2523 if (cards_found && (pcnet32_debug & NETIF_MSG_PROBE))
2524 printk(KERN_INFO PFX "%d cards_found.\n", cards_found);
2526 return (pcnet32_have_pci + cards_found) ? 0 : -ENODEV;
2529 static void __exit pcnet32_cleanup_module(void)
2531 struct net_device *next_dev;
2533 while (pcnet32_dev) {
2534 struct pcnet32_private *lp = pcnet32_dev->priv;
2535 next_dev = lp->next;
2536 unregister_netdev(pcnet32_dev);
2537 pcnet32_free_ring(pcnet32_dev);
2538 release_region(pcnet32_dev->base_addr, PCNET32_TOTAL_SIZE);
2539 pci_free_consistent(lp->pci_dev, sizeof(*lp), lp, lp->dma_addr);
2540 free_netdev(pcnet32_dev);
2541 pcnet32_dev = next_dev;
2544 if (pcnet32_have_pci)
2545 pci_unregister_driver(&pcnet32_driver);
2548 module_init(pcnet32_init_module);
2549 module_exit(pcnet32_cleanup_module);