2 * Copyright(c) 2007 Atheros Corporation. All rights reserved.
3 * Copyright(c) 2007 xiong huang <xiong.huang@atheros.com>
5 * Derived from Intel e1000 driver
6 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the Free
10 * Software Foundation; either version 2 of the License, or (at your option)
13 * This program is distributed in the hope that it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
18 * You should have received a copy of the GNU General Public License along with
19 * this program; if not, write to the Free Software Foundation, Inc., 59
20 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 #include <linux/version.h>
27 #include <linux/init.h>
28 #include <linux/types.h>
29 #include <linux/errno.h>
30 #include <linux/module.h>
31 #include <linux/pci.h>
32 #include <linux/netdevice.h>
33 #include <linux/etherdevice.h>
34 #include <linux/skbuff.h>
35 #include <linux/ioport.h>
36 #include <linux/slab.h>
37 #include <linux/list.h>
38 #include <linux/delay.h>
39 #include <linux/sched.h>
42 #include <linux/ipv6.h>
43 #include <linux/udp.h>
44 #include <linux/mii.h>
46 #include <linux/vmalloc.h>
47 #include <linux/pagemap.h>
48 #include <linux/tcp.h>
49 #include <linux/ethtool.h>
50 #include <linux/if_vlan.h>
51 #include <linux/workqueue.h>
52 #include <net/checksum.h>
53 #include <net/ip6_checksum.h>
57 #define PCI_REG_COMMAND 0x04 /* PCI Command Register */
58 #define CMD_IO_SPACE 0x0001
59 #define CMD_MEMORY_SPACE 0x0002
60 #define CMD_BUS_MASTER 0x0004
66 /* Wake Up Filter Control */
67 #define AT_WUFC_LNKC 0x00000001 /* Link Status Change Wakeup Enable */
68 #define AT_WUFC_MAG 0x00000002 /* Magic Packet Wakeup Enable */
69 #define AT_WUFC_EX 0x00000004 /* Directed Exact Wakeup Enable */
70 #define AT_WUFC_MC 0x00000008 /* Multicast Wakeup Enable */
71 #define AT_WUFC_BC 0x00000010 /* Broadcast Wakeup Enable */
73 #define SPEED_0 0xffff
78 #define AT_ERR_EEPROM 1
80 #define AT_ERR_CONFIG 3
81 #define AT_ERR_PARAM 4
82 #define AT_ERR_MAC_TYPE 5
83 #define AT_ERR_PHY_TYPE 6
84 #define AT_ERR_PHY_SPEED 7
85 #define AT_ERR_PHY_RES 8
86 #define AT_ERR_TIMEOUT 9
88 #define MAX_JUMBO_FRAME_SIZE 0x2000
90 #define AT_VLAN_TAG_TO_TPD_TAG(_vlan, _tpd) \
91 _tpd = (((_vlan) << (4)) | (((_vlan) >> 13) & 7) |\
94 #define AT_TPD_TAG_TO_VLAN_TAG(_tpd, _vlan) \
95 _vlan = (((_tpd) >> 8) | (((_tpd) & 0x77) << 9) |\
96 (((_tdp) & 0x88) << 5))
98 #define AT_MAX_RECEIVE_QUEUE 4
99 #define AT_PAGE_NUM_PER_QUEUE 2
101 #define AT_DMA_HI_ADDR_MASK 0xffffffff00000000ULL
102 #define AT_DMA_LO_ADDR_MASK 0x00000000ffffffffULL
104 #define AT_TX_WATCHDOG (5 * HZ)
105 #define AT_MAX_INT_WORK 10
106 #define AT_TWSI_EEPROM_TIMEOUT 100
107 #define AT_HW_MAX_IDLE_DELAY 10
108 #define AT_SUSPEND_LINK_TIMEOUT 28
110 #define AT_REGS_LEN 75
111 #define AT_EEPROM_LEN 512
112 #define AT_ADV_MASK (ADVERTISE_10_HALF |\
114 ADVERTISE_100_HALF |\
115 ADVERTISE_100_FULL |\
119 #define TPD_BUFLEN_MASK 0x3FFF
120 #define TPD_BUFLEN_SHIFT 0
121 #define TPD_DMAINT_MASK 0x0001
122 #define TPD_DMAINT_SHIFT 14
123 #define TPD_PKTNT_MASK 0x0001
124 #define TPD_PKTINT_SHIFT 15
125 #define TPD_VLANTAG_MASK 0xFFFF
126 #define TPD_VLAN_SHIFT 16
128 /* tpd word 3 bits 0:4 */
129 #define TPD_EOP_MASK 0x0001
130 #define TPD_EOP_SHIFT 0
131 #define TPD_IP_VERSION_MASK 0x0001
132 #define TPD_IP_VERSION_SHIFT 1 /* 0 : IPV4, 1 : IPV6 */
133 #define TPD_INS_VL_TAG_MASK 0x0001
134 #define TPD_INS_VL_TAG_SHIFT 2
135 #define TPD_CC_SEGMENT_EN_MASK 0x0001
136 #define TPD_CC_SEGMENT_EN_SHIFT 3
137 #define TPD_SEGMENT_EN_MASK 0x0001
138 #define TPD_SEGMENT_EN_SHIFT 4
140 /* tdp word 3 bits 5:7 if ip version is 0 */
141 #define TPD_IP_CSUM_MASK 0x0001
142 #define TPD_IP_CSUM_SHIFT 5
143 #define TPD_TCP_CSUM_MASK 0x0001
144 #define TPD_TCP_CSUM_SHIFT 6
145 #define TPD_UDP_CSUM_MASK 0x0001
146 #define TPD_UDP_CSUM_SHIFT 7
148 /* tdp word 3 bits 5:7 if ip version is 1 */
149 #define TPD_V6_IPHLLO_MASK 0x0007
150 #define TPD_V6_IPHLLO_SHIFT 7
152 /* tpd word 3 bits 8:9 bit */
153 #define TPD_VL_TAGGED_MASK 0x0001
154 #define TPD_VL_TAGGED_SHIFT 8
155 #define TPD_ETHTYPE_MASK 0x0001
156 #define TPD_ETHTYPE_SHIFT 9
158 /* tdp word 3 bits 10:13 if ip version is 0 */
159 #define TDP_V4_IPHL_MASK 0x000F
160 #define TPD_V4_IPHL_SHIFT 10
162 /* tdp word 3 bits 10:13 if ip version is 1 */
163 #define TPD_V6_IPHLHI_MASK 0x000F
164 #define TPD_V6_IPHLHI_SHIFT 10
166 /* tpd word 3 bit 14:31 if segment enabled */
167 #define TPD_TCPHDRLEN_MASK 0x000F
168 #define TPD_TCPHDRLEN_SHIFT 14
169 #define TPD_HDRFLAG_MASK 0x0001
170 #define TPD_HDRFLAG_SHIFT 18
171 #define TPD_MSS_MASK 0x1FFF
172 #define TPD_MSS_SHIFT 19
174 /* tdp word 3 bit 16:31 if custom csum enabled */
175 #define TPD_PLOADOFFSET_MASK 0x00FF
176 #define TPD_PLOADOFFSET_SHIFT 16
177 #define TPD_CCSUMOFFSET_MASK 0x00FF
178 #define TPD_CCSUMOFFSET_SHIFT 24
180 struct atl1e_tpd_desc {
186 /* how about 0x2000 */
187 #define MAX_TX_BUF_LEN 0x2000
188 #define MAX_TX_BUF_SHIFT 13
189 /*#define MAX_TX_BUF_LEN 0x3000 */
191 /* rrs word 1 bit 0:31 */
192 #define RRS_RX_CSUM_MASK 0xFFFF
193 #define RRS_RX_CSUM_SHIFT 0
194 #define RRS_PKT_SIZE_MASK 0x3FFF
195 #define RRS_PKT_SIZE_SHIFT 16
196 #define RRS_CPU_NUM_MASK 0x0003
197 #define RRS_CPU_NUM_SHIFT 30
199 #define RRS_IS_RSS_IPV4 0x0001
200 #define RRS_IS_RSS_IPV4_TCP 0x0002
201 #define RRS_IS_RSS_IPV6 0x0004
202 #define RRS_IS_RSS_IPV6_TCP 0x0008
203 #define RRS_IS_IPV6 0x0010
204 #define RRS_IS_IP_FRAG 0x0020
205 #define RRS_IS_IP_DF 0x0040
206 #define RRS_IS_802_3 0x0080
207 #define RRS_IS_VLAN_TAG 0x0100
208 #define RRS_IS_ERR_FRAME 0x0200
209 #define RRS_IS_IPV4 0x0400
210 #define RRS_IS_UDP 0x0800
211 #define RRS_IS_TCP 0x1000
212 #define RRS_IS_BCAST 0x2000
213 #define RRS_IS_MCAST 0x4000
214 #define RRS_IS_PAUSE 0x8000
216 #define RRS_ERR_BAD_CRC 0x0001
217 #define RRS_ERR_CODE 0x0002
218 #define RRS_ERR_DRIBBLE 0x0004
219 #define RRS_ERR_RUNT 0x0008
220 #define RRS_ERR_RX_OVERFLOW 0x0010
221 #define RRS_ERR_TRUNC 0x0020
222 #define RRS_ERR_IP_CSUM 0x0040
223 #define RRS_ERR_L4_CSUM 0x0080
224 #define RRS_ERR_LENGTH 0x0100
225 #define RRS_ERR_DES_ADDR 0x0200
227 struct atl1e_recv_ret_status {
237 enum atl1e_dma_req_block {
238 atl1e_dma_req_128 = 0,
239 atl1e_dma_req_256 = 1,
240 atl1e_dma_req_512 = 2,
241 atl1e_dma_req_1024 = 3,
242 atl1e_dma_req_2048 = 4,
243 atl1e_dma_req_4096 = 5
246 enum atl1e_rrs_type {
247 atl1e_rrs_disable = 0,
249 atl1e_rrs_ipv4_tcp = 2,
251 atl1e_rrs_ipv6_tcp = 8
254 enum atl1e_nic_type {
260 struct atl1e_hw_stats {
262 unsigned long rx_ok; /* The number of good packet received. */
263 unsigned long rx_bcast; /* The number of good broadcast packet received. */
264 unsigned long rx_mcast; /* The number of good multicast packet received. */
265 unsigned long rx_pause; /* The number of Pause packet received. */
266 unsigned long rx_ctrl; /* The number of Control packet received other than Pause frame. */
267 unsigned long rx_fcs_err; /* The number of packets with bad FCS. */
268 unsigned long rx_len_err; /* The number of packets with mismatch of length field and actual size. */
269 unsigned long rx_byte_cnt; /* The number of bytes of good packet received. FCS is NOT included. */
270 unsigned long rx_runt; /* The number of packets received that are less than 64 byte long and with good FCS. */
271 unsigned long rx_frag; /* The number of packets received that are less than 64 byte long and with bad FCS. */
272 unsigned long rx_sz_64; /* The number of good and bad packets received that are 64 byte long. */
273 unsigned long rx_sz_65_127; /* The number of good and bad packets received that are between 65 and 127-byte long. */
274 unsigned long rx_sz_128_255; /* The number of good and bad packets received that are between 128 and 255-byte long. */
275 unsigned long rx_sz_256_511; /* The number of good and bad packets received that are between 256 and 511-byte long. */
276 unsigned long rx_sz_512_1023; /* The number of good and bad packets received that are between 512 and 1023-byte long. */
277 unsigned long rx_sz_1024_1518; /* The number of good and bad packets received that are between 1024 and 1518-byte long. */
278 unsigned long rx_sz_1519_max; /* The number of good and bad packets received that are between 1519-byte and MTU. */
279 unsigned long rx_sz_ov; /* The number of good and bad packets received that are more than MTU size truncated by Selene. */
280 unsigned long rx_rxf_ov; /* The number of frame dropped due to occurrence of RX FIFO overflow. */
281 unsigned long rx_rrd_ov; /* The number of frame dropped due to occurrence of RRD overflow. */
282 unsigned long rx_align_err; /* Alignment Error */
283 unsigned long rx_bcast_byte_cnt; /* The byte count of broadcast packet received, excluding FCS. */
284 unsigned long rx_mcast_byte_cnt; /* The byte count of multicast packet received, excluding FCS. */
285 unsigned long rx_err_addr; /* The number of packets dropped due to address filtering. */
288 unsigned long tx_ok; /* The number of good packet transmitted. */
289 unsigned long tx_bcast; /* The number of good broadcast packet transmitted. */
290 unsigned long tx_mcast; /* The number of good multicast packet transmitted. */
291 unsigned long tx_pause; /* The number of Pause packet transmitted. */
292 unsigned long tx_exc_defer; /* The number of packets transmitted with excessive deferral. */
293 unsigned long tx_ctrl; /* The number of packets transmitted is a control frame, excluding Pause frame. */
294 unsigned long tx_defer; /* The number of packets transmitted that is deferred. */
295 unsigned long tx_byte_cnt; /* The number of bytes of data transmitted. FCS is NOT included. */
296 unsigned long tx_sz_64; /* The number of good and bad packets transmitted that are 64 byte long. */
297 unsigned long tx_sz_65_127; /* The number of good and bad packets transmitted that are between 65 and 127-byte long. */
298 unsigned long tx_sz_128_255; /* The number of good and bad packets transmitted that are between 128 and 255-byte long. */
299 unsigned long tx_sz_256_511; /* The number of good and bad packets transmitted that are between 256 and 511-byte long. */
300 unsigned long tx_sz_512_1023; /* The number of good and bad packets transmitted that are between 512 and 1023-byte long. */
301 unsigned long tx_sz_1024_1518; /* The number of good and bad packets transmitted that are between 1024 and 1518-byte long. */
302 unsigned long tx_sz_1519_max; /* The number of good and bad packets transmitted that are between 1519-byte and MTU. */
303 unsigned long tx_1_col; /* The number of packets subsequently transmitted successfully with a single prior collision. */
304 unsigned long tx_2_col; /* The number of packets subsequently transmitted successfully with multiple prior collisions. */
305 unsigned long tx_late_col; /* The number of packets transmitted with late collisions. */
306 unsigned long tx_abort_col; /* The number of transmit packets aborted due to excessive collisions. */
307 unsigned long tx_underrun; /* The number of transmit packets aborted due to transmit FIFO underrun, or TRD FIFO underrun */
308 unsigned long tx_rd_eop; /* The number of times that read beyond the EOP into the next frame area when TRD was not written timely */
309 unsigned long tx_len_err; /* The number of transmit packets with length field does NOT match the actual frame size. */
310 unsigned long tx_trunc; /* The number of transmit packets truncated due to size exceeding MTU. */
311 unsigned long tx_bcast_byte; /* The byte count of broadcast packet transmitted, excluding FCS. */
312 unsigned long tx_mcast_byte; /* The byte count of multicast packet transmitted, excluding FCS. */
316 u8 __iomem *hw_addr; /* inner register address */
317 resource_size_t mem_rang;
318 struct atl1e_adapter *adapter;
319 enum atl1e_nic_type nic_type;
323 u16 subsystem_vendor_id;
326 u8 mac_addr[ETH_ALEN];
327 u8 perm_mac_addr[ETH_ALEN];
334 #define MEDIA_TYPE_AUTO_SENSOR 0
335 #define MEDIA_TYPE_100M_FULL 1
336 #define MEDIA_TYPE_100M_HALF 2
337 #define MEDIA_TYPE_10M_FULL 3
338 #define MEDIA_TYPE_10M_HALF 4
340 u16 autoneg_advertised;
341 #define ADVERTISE_10_HALF 0x0001
342 #define ADVERTISE_10_FULL 0x0002
343 #define ADVERTISE_100_HALF 0x0004
344 #define ADVERTISE_100_FULL 0x0008
345 #define ADVERTISE_1000_HALF 0x0010 /* Not used, just FYI */
346 #define ADVERTISE_1000_FULL 0x0020
347 u16 mii_autoneg_adv_reg;
348 u16 mii_1000t_ctrl_reg;
350 u16 imt; /* Interrupt Moderator timer ( 2us resolution) */
351 u16 ict; /* Interrupt Clear timer (2us resolution) */
353 u16 rrd_thresh; /* Threshold of number of RRD produced to trigger
356 u16 rx_count_down; /* 2us resolution */
359 u8 tpd_burst; /* Number of TPD to prefetch in cache-aligned burst. */
360 enum atl1e_rrs_type rrs_type;
364 enum atl1e_dma_req_block dmar_block;
365 enum atl1e_dma_req_block dmaw_block;
375 * wrapper around a pointer to a socket buffer,
376 * so a DMA handle can be stored along with the buffer
378 struct atl1e_tx_buffer {
384 struct atl1e_rx_page {
385 dma_addr_t dma; /* receive rage DMA address */
386 u8 *addr; /* receive rage virtual address */
387 dma_addr_t write_offset_dma; /* the DMA address which contain the
388 receive data offset in the page */
389 u32 *write_offset_addr; /* the virtaul address which contain
390 the receive data offset in the page */
391 u32 read_offset; /* the offset where we have read */
394 struct atl1e_rx_page_desc {
395 struct atl1e_rx_page rx_page[AT_PAGE_NUM_PER_QUEUE];
400 /* transmit packet descriptor (tpd) ring */
401 struct atl1e_tx_ring {
402 struct atl1e_tpd_desc *desc; /* descriptor ring virtual address */
403 dma_addr_t dma; /* descriptor ring physical address */
404 u16 count; /* the count of transmit rings */
407 atomic_t next_to_clean;
408 struct atl1e_tx_buffer *tx_buffer;
413 /* receive packet descriptor ring */
414 struct atl1e_rx_ring {
418 u32 page_size; /* bytes length of rxf page */
419 u32 real_page_size; /* real_page_size = page_size + jumbo + aliagn */
420 struct atl1e_rx_page_desc rx_page_desc[AT_MAX_RECEIVE_QUEUE];
423 /* board specific private data structure */
424 struct atl1e_adapter {
425 struct net_device *netdev;
426 struct pci_dev *pdev;
427 struct vlan_group *vlgrp;
428 struct napi_struct napi;
429 struct mii_if_info mii; /* MII interface info */
431 struct atl1e_hw_stats hw_stats;
438 spinlock_t mdio_lock;
442 struct work_struct reset_task;
443 struct work_struct link_chg_task;
444 struct timer_list watchdog_timer;
445 struct timer_list phy_config_timer;
447 /* All Descriptor memory */
452 struct atl1e_tx_ring tx_ring;
453 struct atl1e_rx_ring rx_ring;
456 #define __AT_TESTING 0x0001
457 #define __AT_RESETTING 0x0002
458 #define __AT_DOWN 0x0003
460 u32 bd_number; /* board number;*/
465 #define AT_WRITE_REG(a, reg, value) ( \
466 writel((value), ((a)->hw_addr + reg)))
468 #define AT_WRITE_FLUSH(a) (\
471 #define AT_READ_REG(a, reg) ( \
472 readl((a)->hw_addr + reg))
474 #define AT_WRITE_REGB(a, reg, value) (\
475 writeb((value), ((a)->hw_addr + reg)))
477 #define AT_READ_REGB(a, reg) (\
478 readb((a)->hw_addr + reg))
480 #define AT_WRITE_REGW(a, reg, value) (\
481 writew((value), ((a)->hw_addr + reg)))
483 #define AT_READ_REGW(a, reg) (\
484 readw((a)->hw_addr + reg))
486 #define AT_WRITE_REG_ARRAY(a, reg, offset, value) ( \
487 writel((value), (((a)->hw_addr + reg) + ((offset) << 2))))
489 #define AT_READ_REG_ARRAY(a, reg, offset) ( \
490 readl(((a)->hw_addr + reg) + ((offset) << 2)))
492 extern char atl1e_driver_name[];
493 extern char atl1e_driver_version[];
495 extern void atl1e_check_options(struct atl1e_adapter *adapter);
496 extern int atl1e_up(struct atl1e_adapter *adapter);
497 extern void atl1e_down(struct atl1e_adapter *adapter);
498 extern void atl1e_reinit_locked(struct atl1e_adapter *adapter);
499 extern s32 atl1e_reset_hw(struct atl1e_hw *hw);
500 extern void atl1e_set_ethtool_ops(struct net_device *netdev);
501 #endif /* _ATL1_E_H_ */