1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2009 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
29 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31 #include <linux/module.h>
32 #include <linux/types.h>
33 #include <linux/init.h>
34 #include <linux/pci.h>
35 #include <linux/vmalloc.h>
36 #include <linux/pagemap.h>
37 #include <linux/delay.h>
38 #include <linux/netdevice.h>
39 #include <linux/tcp.h>
40 #include <linux/ipv6.h>
41 #include <linux/slab.h>
42 #include <net/checksum.h>
43 #include <net/ip6_checksum.h>
44 #include <linux/mii.h>
45 #include <linux/ethtool.h>
46 #include <linux/if_vlan.h>
47 #include <linux/cpu.h>
48 #include <linux/smp.h>
49 #include <linux/pm_qos_params.h>
50 #include <linux/pm_runtime.h>
51 #include <linux/aer.h>
55 #define DRV_VERSION "1.0.2-k4"
56 char e1000e_driver_name[] = "e1000e";
57 const char e1000e_driver_version[] = DRV_VERSION;
59 static const struct e1000_info *e1000_info_tbl[] = {
60 [board_82571] = &e1000_82571_info,
61 [board_82572] = &e1000_82572_info,
62 [board_82573] = &e1000_82573_info,
63 [board_82574] = &e1000_82574_info,
64 [board_82583] = &e1000_82583_info,
65 [board_80003es2lan] = &e1000_es2_info,
66 [board_ich8lan] = &e1000_ich8_info,
67 [board_ich9lan] = &e1000_ich9_info,
68 [board_ich10lan] = &e1000_ich10_info,
69 [board_pchlan] = &e1000_pch_info,
70 [board_pch2lan] = &e1000_pch2_info,
73 struct e1000_reg_info {
78 #define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */
79 #define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */
80 #define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */
81 #define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */
82 #define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */
84 #define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */
85 #define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */
86 #define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */
87 #define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */
88 #define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */
90 static const struct e1000_reg_info e1000_reg_info_tbl[] = {
92 /* General Registers */
94 {E1000_STATUS, "STATUS"},
95 {E1000_CTRL_EXT, "CTRL_EXT"},
97 /* Interrupt Registers */
101 {E1000_RCTL, "RCTL"},
102 {E1000_RDLEN, "RDLEN"},
105 {E1000_RDTR, "RDTR"},
106 {E1000_RXDCTL(0), "RXDCTL"},
108 {E1000_RDBAL, "RDBAL"},
109 {E1000_RDBAH, "RDBAH"},
110 {E1000_RDFH, "RDFH"},
111 {E1000_RDFT, "RDFT"},
112 {E1000_RDFHS, "RDFHS"},
113 {E1000_RDFTS, "RDFTS"},
114 {E1000_RDFPC, "RDFPC"},
117 {E1000_TCTL, "TCTL"},
118 {E1000_TDBAL, "TDBAL"},
119 {E1000_TDBAH, "TDBAH"},
120 {E1000_TDLEN, "TDLEN"},
123 {E1000_TIDV, "TIDV"},
124 {E1000_TXDCTL(0), "TXDCTL"},
125 {E1000_TADV, "TADV"},
126 {E1000_TARC(0), "TARC"},
127 {E1000_TDFH, "TDFH"},
128 {E1000_TDFT, "TDFT"},
129 {E1000_TDFHS, "TDFHS"},
130 {E1000_TDFTS, "TDFTS"},
131 {E1000_TDFPC, "TDFPC"},
133 /* List Terminator */
138 * e1000_regdump - register printout routine
140 static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo)
146 switch (reginfo->ofs) {
147 case E1000_RXDCTL(0):
148 for (n = 0; n < 2; n++)
149 regs[n] = __er32(hw, E1000_RXDCTL(n));
151 case E1000_TXDCTL(0):
152 for (n = 0; n < 2; n++)
153 regs[n] = __er32(hw, E1000_TXDCTL(n));
156 for (n = 0; n < 2; n++)
157 regs[n] = __er32(hw, E1000_TARC(n));
160 printk(KERN_INFO "%-15s %08x\n",
161 reginfo->name, __er32(hw, reginfo->ofs));
165 snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]");
166 printk(KERN_INFO "%-15s ", rname);
167 for (n = 0; n < 2; n++)
168 printk(KERN_CONT "%08x ", regs[n]);
169 printk(KERN_CONT "\n");
174 * e1000e_dump - Print registers, tx-ring and rx-ring
176 static void e1000e_dump(struct e1000_adapter *adapter)
178 struct net_device *netdev = adapter->netdev;
179 struct e1000_hw *hw = &adapter->hw;
180 struct e1000_reg_info *reginfo;
181 struct e1000_ring *tx_ring = adapter->tx_ring;
182 struct e1000_tx_desc *tx_desc;
183 struct my_u0 { u64 a; u64 b; } *u0;
184 struct e1000_buffer *buffer_info;
185 struct e1000_ring *rx_ring = adapter->rx_ring;
186 union e1000_rx_desc_packet_split *rx_desc_ps;
187 struct e1000_rx_desc *rx_desc;
188 struct my_u1 { u64 a; u64 b; u64 c; u64 d; } *u1;
192 if (!netif_msg_hw(adapter))
195 /* Print netdevice Info */
197 dev_info(&adapter->pdev->dev, "Net device Info\n");
198 printk(KERN_INFO "Device Name state "
199 "trans_start last_rx\n");
200 printk(KERN_INFO "%-15s %016lX %016lX %016lX\n",
207 /* Print Registers */
208 dev_info(&adapter->pdev->dev, "Register Dump\n");
209 printk(KERN_INFO " Register Name Value\n");
210 for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl;
211 reginfo->name; reginfo++) {
212 e1000_regdump(hw, reginfo);
215 /* Print TX Ring Summary */
216 if (!netdev || !netif_running(netdev))
219 dev_info(&adapter->pdev->dev, "TX Rings Summary\n");
220 printk(KERN_INFO "Queue [NTU] [NTC] [bi(ntc)->dma ]"
221 " leng ntw timestamp\n");
222 buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean];
223 printk(KERN_INFO " %5d %5X %5X %016llX %04X %3X %016llX\n",
224 0, tx_ring->next_to_use, tx_ring->next_to_clean,
225 (u64)buffer_info->dma,
227 buffer_info->next_to_watch,
228 (u64)buffer_info->time_stamp);
231 if (!netif_msg_tx_done(adapter))
232 goto rx_ring_summary;
234 dev_info(&adapter->pdev->dev, "TX Rings Dump\n");
236 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
238 * Legacy Transmit Descriptor
239 * +--------------------------------------------------------------+
240 * 0 | Buffer Address [63:0] (Reserved on Write Back) |
241 * +--------------------------------------------------------------+
242 * 8 | Special | CSS | Status | CMD | CSO | Length |
243 * +--------------------------------------------------------------+
244 * 63 48 47 36 35 32 31 24 23 16 15 0
246 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
247 * 63 48 47 40 39 32 31 16 15 8 7 0
248 * +----------------------------------------------------------------+
249 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
250 * +----------------------------------------------------------------+
251 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
252 * +----------------------------------------------------------------+
253 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
255 * Extended Data Descriptor (DTYP=0x1)
256 * +----------------------------------------------------------------+
257 * 0 | Buffer Address [63:0] |
258 * +----------------------------------------------------------------+
259 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
260 * +----------------------------------------------------------------+
261 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
263 printk(KERN_INFO "Tl[desc] [address 63:0 ] [SpeCssSCmCsLen]"
264 " [bi->dma ] leng ntw timestamp bi->skb "
265 "<-- Legacy format\n");
266 printk(KERN_INFO "Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen]"
267 " [bi->dma ] leng ntw timestamp bi->skb "
268 "<-- Ext Context format\n");
269 printk(KERN_INFO "Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen]"
270 " [bi->dma ] leng ntw timestamp bi->skb "
271 "<-- Ext Data format\n");
272 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
273 tx_desc = E1000_TX_DESC(*tx_ring, i);
274 buffer_info = &tx_ring->buffer_info[i];
275 u0 = (struct my_u0 *)tx_desc;
276 printk(KERN_INFO "T%c[0x%03X] %016llX %016llX %016llX "
277 "%04X %3X %016llX %p",
278 (!(le64_to_cpu(u0->b) & (1<<29)) ? 'l' :
279 ((le64_to_cpu(u0->b) & (1<<20)) ? 'd' : 'c')), i,
280 le64_to_cpu(u0->a), le64_to_cpu(u0->b),
281 (u64)buffer_info->dma, buffer_info->length,
282 buffer_info->next_to_watch, (u64)buffer_info->time_stamp,
284 if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean)
285 printk(KERN_CONT " NTC/U\n");
286 else if (i == tx_ring->next_to_use)
287 printk(KERN_CONT " NTU\n");
288 else if (i == tx_ring->next_to_clean)
289 printk(KERN_CONT " NTC\n");
291 printk(KERN_CONT "\n");
293 if (netif_msg_pktdata(adapter) && buffer_info->dma != 0)
294 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS,
295 16, 1, phys_to_virt(buffer_info->dma),
296 buffer_info->length, true);
299 /* Print RX Rings Summary */
301 dev_info(&adapter->pdev->dev, "RX Rings Summary\n");
302 printk(KERN_INFO "Queue [NTU] [NTC]\n");
303 printk(KERN_INFO " %5d %5X %5X\n", 0,
304 rx_ring->next_to_use, rx_ring->next_to_clean);
307 if (!netif_msg_rx_status(adapter))
310 dev_info(&adapter->pdev->dev, "RX Rings Dump\n");
311 switch (adapter->rx_ps_pages) {
315 /* [Extended] Packet Split Receive Descriptor Format
317 * +-----------------------------------------------------+
318 * 0 | Buffer Address 0 [63:0] |
319 * +-----------------------------------------------------+
320 * 8 | Buffer Address 1 [63:0] |
321 * +-----------------------------------------------------+
322 * 16 | Buffer Address 2 [63:0] |
323 * +-----------------------------------------------------+
324 * 24 | Buffer Address 3 [63:0] |
325 * +-----------------------------------------------------+
327 printk(KERN_INFO "R [desc] [buffer 0 63:0 ] "
329 "[buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] "
330 "[bi->skb] <-- Ext Pkt Split format\n");
331 /* [Extended] Receive Descriptor (Write-Back) Format
333 * 63 48 47 32 31 13 12 8 7 4 3 0
334 * +------------------------------------------------------+
335 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
336 * | Checksum | Ident | | Queue | | Type |
337 * +------------------------------------------------------+
338 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
339 * +------------------------------------------------------+
340 * 63 48 47 32 31 20 19 0
342 printk(KERN_INFO "RWB[desc] [ck ipid mrqhsh] "
344 "[ l3 l2 l1 hs] [reserved ] ---------------- "
345 "[bi->skb] <-- Ext Rx Write-Back format\n");
346 for (i = 0; i < rx_ring->count; i++) {
347 buffer_info = &rx_ring->buffer_info[i];
348 rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i);
349 u1 = (struct my_u1 *)rx_desc_ps;
351 le32_to_cpu(rx_desc_ps->wb.middle.status_error);
352 if (staterr & E1000_RXD_STAT_DD) {
353 /* Descriptor Done */
354 printk(KERN_INFO "RWB[0x%03X] %016llX "
355 "%016llX %016llX %016llX "
356 "---------------- %p", i,
363 printk(KERN_INFO "R [0x%03X] %016llX "
364 "%016llX %016llX %016llX %016llX %p", i,
369 (u64)buffer_info->dma,
372 if (netif_msg_pktdata(adapter))
373 print_hex_dump(KERN_INFO, "",
374 DUMP_PREFIX_ADDRESS, 16, 1,
375 phys_to_virt(buffer_info->dma),
376 adapter->rx_ps_bsize0, true);
379 if (i == rx_ring->next_to_use)
380 printk(KERN_CONT " NTU\n");
381 else if (i == rx_ring->next_to_clean)
382 printk(KERN_CONT " NTC\n");
384 printk(KERN_CONT "\n");
389 /* Legacy Receive Descriptor Format
391 * +-----------------------------------------------------+
392 * | Buffer Address [63:0] |
393 * +-----------------------------------------------------+
394 * | VLAN Tag | Errors | Status 0 | Packet csum | Length |
395 * +-----------------------------------------------------+
396 * 63 48 47 40 39 32 31 16 15 0
398 printk(KERN_INFO "Rl[desc] [address 63:0 ] "
399 "[vl er S cks ln] [bi->dma ] [bi->skb] "
400 "<-- Legacy format\n");
401 for (i = 0; rx_ring->desc && (i < rx_ring->count); i++) {
402 rx_desc = E1000_RX_DESC(*rx_ring, i);
403 buffer_info = &rx_ring->buffer_info[i];
404 u0 = (struct my_u0 *)rx_desc;
405 printk(KERN_INFO "Rl[0x%03X] %016llX %016llX "
407 i, le64_to_cpu(u0->a), le64_to_cpu(u0->b),
408 (u64)buffer_info->dma, buffer_info->skb);
409 if (i == rx_ring->next_to_use)
410 printk(KERN_CONT " NTU\n");
411 else if (i == rx_ring->next_to_clean)
412 printk(KERN_CONT " NTC\n");
414 printk(KERN_CONT "\n");
416 if (netif_msg_pktdata(adapter))
417 print_hex_dump(KERN_INFO, "",
419 16, 1, phys_to_virt(buffer_info->dma),
420 adapter->rx_buffer_len, true);
429 * e1000_desc_unused - calculate if we have unused descriptors
431 static int e1000_desc_unused(struct e1000_ring *ring)
433 if (ring->next_to_clean > ring->next_to_use)
434 return ring->next_to_clean - ring->next_to_use - 1;
436 return ring->count + ring->next_to_clean - ring->next_to_use - 1;
440 * e1000_receive_skb - helper function to handle Rx indications
441 * @adapter: board private structure
442 * @status: descriptor status field as written by hardware
443 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
444 * @skb: pointer to sk_buff to be indicated to stack
446 static void e1000_receive_skb(struct e1000_adapter *adapter,
447 struct net_device *netdev,
449 u8 status, __le16 vlan)
451 skb->protocol = eth_type_trans(skb, netdev);
453 if (adapter->vlgrp && (status & E1000_RXD_STAT_VP))
454 vlan_gro_receive(&adapter->napi, adapter->vlgrp,
455 le16_to_cpu(vlan), skb);
457 napi_gro_receive(&adapter->napi, skb);
461 * e1000_rx_checksum - Receive Checksum Offload for 82543
462 * @adapter: board private structure
463 * @status_err: receive descriptor status and error fields
464 * @csum: receive descriptor csum field
465 * @sk_buff: socket buffer with received data
467 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
468 u32 csum, struct sk_buff *skb)
470 u16 status = (u16)status_err;
471 u8 errors = (u8)(status_err >> 24);
472 skb->ip_summed = CHECKSUM_NONE;
474 /* Ignore Checksum bit is set */
475 if (status & E1000_RXD_STAT_IXSM)
477 /* TCP/UDP checksum error bit is set */
478 if (errors & E1000_RXD_ERR_TCPE) {
479 /* let the stack verify checksum errors */
480 adapter->hw_csum_err++;
484 /* TCP/UDP Checksum has not been calculated */
485 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
488 /* It must be a TCP or UDP packet with a valid checksum */
489 if (status & E1000_RXD_STAT_TCPCS) {
490 /* TCP checksum is good */
491 skb->ip_summed = CHECKSUM_UNNECESSARY;
494 * IP fragment with UDP payload
495 * Hardware complements the payload checksum, so we undo it
496 * and then put the value in host order for further stack use.
498 __sum16 sum = (__force __sum16)htons(csum);
499 skb->csum = csum_unfold(~sum);
500 skb->ip_summed = CHECKSUM_COMPLETE;
502 adapter->hw_csum_good++;
506 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
507 * @adapter: address of board private structure
509 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
512 struct net_device *netdev = adapter->netdev;
513 struct pci_dev *pdev = adapter->pdev;
514 struct e1000_ring *rx_ring = adapter->rx_ring;
515 struct e1000_rx_desc *rx_desc;
516 struct e1000_buffer *buffer_info;
519 unsigned int bufsz = adapter->rx_buffer_len;
521 i = rx_ring->next_to_use;
522 buffer_info = &rx_ring->buffer_info[i];
524 while (cleaned_count--) {
525 skb = buffer_info->skb;
531 skb = netdev_alloc_skb_ip_align(netdev, bufsz);
533 /* Better luck next round */
534 adapter->alloc_rx_buff_failed++;
538 buffer_info->skb = skb;
540 buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
541 adapter->rx_buffer_len,
543 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
544 dev_err(&pdev->dev, "RX DMA map failed\n");
545 adapter->rx_dma_failed++;
549 rx_desc = E1000_RX_DESC(*rx_ring, i);
550 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
552 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
554 * Force memory writes to complete before letting h/w
555 * know there are new descriptors to fetch. (Only
556 * applicable for weak-ordered memory model archs,
560 writel(i, adapter->hw.hw_addr + rx_ring->tail);
563 if (i == rx_ring->count)
565 buffer_info = &rx_ring->buffer_info[i];
568 rx_ring->next_to_use = i;
572 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
573 * @adapter: address of board private structure
575 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
578 struct net_device *netdev = adapter->netdev;
579 struct pci_dev *pdev = adapter->pdev;
580 union e1000_rx_desc_packet_split *rx_desc;
581 struct e1000_ring *rx_ring = adapter->rx_ring;
582 struct e1000_buffer *buffer_info;
583 struct e1000_ps_page *ps_page;
587 i = rx_ring->next_to_use;
588 buffer_info = &rx_ring->buffer_info[i];
590 while (cleaned_count--) {
591 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
593 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
594 ps_page = &buffer_info->ps_pages[j];
595 if (j >= adapter->rx_ps_pages) {
596 /* all unused desc entries get hw null ptr */
597 rx_desc->read.buffer_addr[j+1] = ~cpu_to_le64(0);
600 if (!ps_page->page) {
601 ps_page->page = alloc_page(GFP_ATOMIC);
602 if (!ps_page->page) {
603 adapter->alloc_rx_buff_failed++;
606 ps_page->dma = dma_map_page(&pdev->dev,
610 if (dma_mapping_error(&pdev->dev,
612 dev_err(&adapter->pdev->dev,
613 "RX DMA page map failed\n");
614 adapter->rx_dma_failed++;
619 * Refresh the desc even if buffer_addrs
620 * didn't change because each write-back
623 rx_desc->read.buffer_addr[j+1] =
624 cpu_to_le64(ps_page->dma);
627 skb = netdev_alloc_skb_ip_align(netdev,
628 adapter->rx_ps_bsize0);
631 adapter->alloc_rx_buff_failed++;
635 buffer_info->skb = skb;
636 buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
637 adapter->rx_ps_bsize0,
639 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
640 dev_err(&pdev->dev, "RX DMA map failed\n");
641 adapter->rx_dma_failed++;
643 dev_kfree_skb_any(skb);
644 buffer_info->skb = NULL;
648 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
650 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
652 * Force memory writes to complete before letting h/w
653 * know there are new descriptors to fetch. (Only
654 * applicable for weak-ordered memory model archs,
658 writel(i<<1, adapter->hw.hw_addr + rx_ring->tail);
662 if (i == rx_ring->count)
664 buffer_info = &rx_ring->buffer_info[i];
668 rx_ring->next_to_use = i;
672 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
673 * @adapter: address of board private structure
674 * @cleaned_count: number of buffers to allocate this pass
677 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
680 struct net_device *netdev = adapter->netdev;
681 struct pci_dev *pdev = adapter->pdev;
682 struct e1000_rx_desc *rx_desc;
683 struct e1000_ring *rx_ring = adapter->rx_ring;
684 struct e1000_buffer *buffer_info;
687 unsigned int bufsz = 256 - 16 /* for skb_reserve */;
689 i = rx_ring->next_to_use;
690 buffer_info = &rx_ring->buffer_info[i];
692 while (cleaned_count--) {
693 skb = buffer_info->skb;
699 skb = netdev_alloc_skb_ip_align(netdev, bufsz);
700 if (unlikely(!skb)) {
701 /* Better luck next round */
702 adapter->alloc_rx_buff_failed++;
706 buffer_info->skb = skb;
708 /* allocate a new page if necessary */
709 if (!buffer_info->page) {
710 buffer_info->page = alloc_page(GFP_ATOMIC);
711 if (unlikely(!buffer_info->page)) {
712 adapter->alloc_rx_buff_failed++;
717 if (!buffer_info->dma)
718 buffer_info->dma = dma_map_page(&pdev->dev,
719 buffer_info->page, 0,
723 rx_desc = E1000_RX_DESC(*rx_ring, i);
724 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
726 if (unlikely(++i == rx_ring->count))
728 buffer_info = &rx_ring->buffer_info[i];
731 if (likely(rx_ring->next_to_use != i)) {
732 rx_ring->next_to_use = i;
733 if (unlikely(i-- == 0))
734 i = (rx_ring->count - 1);
736 /* Force memory writes to complete before letting h/w
737 * know there are new descriptors to fetch. (Only
738 * applicable for weak-ordered memory model archs,
741 writel(i, adapter->hw.hw_addr + rx_ring->tail);
746 * e1000_clean_rx_irq - Send received data up the network stack; legacy
747 * @adapter: board private structure
749 * the return value indicates whether actual cleaning was done, there
750 * is no guarantee that everything was cleaned
752 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
753 int *work_done, int work_to_do)
755 struct net_device *netdev = adapter->netdev;
756 struct pci_dev *pdev = adapter->pdev;
757 struct e1000_hw *hw = &adapter->hw;
758 struct e1000_ring *rx_ring = adapter->rx_ring;
759 struct e1000_rx_desc *rx_desc, *next_rxd;
760 struct e1000_buffer *buffer_info, *next_buffer;
763 int cleaned_count = 0;
765 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
767 i = rx_ring->next_to_clean;
768 rx_desc = E1000_RX_DESC(*rx_ring, i);
769 buffer_info = &rx_ring->buffer_info[i];
771 while (rx_desc->status & E1000_RXD_STAT_DD) {
775 if (*work_done >= work_to_do)
779 status = rx_desc->status;
780 skb = buffer_info->skb;
781 buffer_info->skb = NULL;
783 prefetch(skb->data - NET_IP_ALIGN);
786 if (i == rx_ring->count)
788 next_rxd = E1000_RX_DESC(*rx_ring, i);
791 next_buffer = &rx_ring->buffer_info[i];
795 dma_unmap_single(&pdev->dev,
797 adapter->rx_buffer_len,
799 buffer_info->dma = 0;
801 length = le16_to_cpu(rx_desc->length);
804 * !EOP means multiple descriptors were used to store a single
805 * packet, if that's the case we need to toss it. In fact, we
806 * need to toss every packet with the EOP bit clear and the
807 * next frame that _does_ have the EOP bit set, as it is by
808 * definition only a frame fragment
810 if (unlikely(!(status & E1000_RXD_STAT_EOP)))
811 adapter->flags2 |= FLAG2_IS_DISCARDING;
813 if (adapter->flags2 & FLAG2_IS_DISCARDING) {
814 /* All receives must fit into a single buffer */
815 e_dbg("Receive packet consumed multiple buffers\n");
817 buffer_info->skb = skb;
818 if (status & E1000_RXD_STAT_EOP)
819 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
823 if (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) {
825 buffer_info->skb = skb;
829 /* adjust length to remove Ethernet CRC */
830 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING))
833 total_rx_bytes += length;
837 * code added for copybreak, this should improve
838 * performance for small packets with large amounts
839 * of reassembly being done in the stack
841 if (length < copybreak) {
842 struct sk_buff *new_skb =
843 netdev_alloc_skb_ip_align(netdev, length);
845 skb_copy_to_linear_data_offset(new_skb,
851 /* save the skb in buffer_info as good */
852 buffer_info->skb = skb;
855 /* else just continue with the old one */
857 /* end copybreak code */
858 skb_put(skb, length);
860 /* Receive Checksum Offload */
861 e1000_rx_checksum(adapter,
863 ((u32)(rx_desc->errors) << 24),
864 le16_to_cpu(rx_desc->csum), skb);
866 e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special);
871 /* return some buffers to hardware, one at a time is too slow */
872 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
873 adapter->alloc_rx_buf(adapter, cleaned_count);
877 /* use prefetched values */
879 buffer_info = next_buffer;
881 rx_ring->next_to_clean = i;
883 cleaned_count = e1000_desc_unused(rx_ring);
885 adapter->alloc_rx_buf(adapter, cleaned_count);
887 adapter->total_rx_bytes += total_rx_bytes;
888 adapter->total_rx_packets += total_rx_packets;
889 netdev->stats.rx_bytes += total_rx_bytes;
890 netdev->stats.rx_packets += total_rx_packets;
894 static void e1000_put_txbuf(struct e1000_adapter *adapter,
895 struct e1000_buffer *buffer_info)
897 if (buffer_info->dma) {
898 if (buffer_info->mapped_as_page)
899 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma,
900 buffer_info->length, DMA_TO_DEVICE);
902 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma,
903 buffer_info->length, DMA_TO_DEVICE);
904 buffer_info->dma = 0;
906 if (buffer_info->skb) {
907 dev_kfree_skb_any(buffer_info->skb);
908 buffer_info->skb = NULL;
910 buffer_info->time_stamp = 0;
913 static void e1000_print_hw_hang(struct work_struct *work)
915 struct e1000_adapter *adapter = container_of(work,
916 struct e1000_adapter,
918 struct e1000_ring *tx_ring = adapter->tx_ring;
919 unsigned int i = tx_ring->next_to_clean;
920 unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
921 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop);
922 struct e1000_hw *hw = &adapter->hw;
923 u16 phy_status, phy_1000t_status, phy_ext_status;
926 e1e_rphy(hw, PHY_STATUS, &phy_status);
927 e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status);
928 e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status);
930 pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status);
932 /* detected Hardware unit hang */
933 e_err("Detected Hardware Unit Hang:\n"
936 " next_to_use <%x>\n"
937 " next_to_clean <%x>\n"
938 "buffer_info[next_to_clean]:\n"
939 " time_stamp <%lx>\n"
940 " next_to_watch <%x>\n"
942 " next_to_watch.status <%x>\n"
945 "PHY 1000BASE-T Status <%x>\n"
946 "PHY Extended Status <%x>\n"
948 readl(adapter->hw.hw_addr + tx_ring->head),
949 readl(adapter->hw.hw_addr + tx_ring->tail),
950 tx_ring->next_to_use,
951 tx_ring->next_to_clean,
952 tx_ring->buffer_info[eop].time_stamp,
955 eop_desc->upper.fields.status,
964 * e1000_clean_tx_irq - Reclaim resources after transmit completes
965 * @adapter: board private structure
967 * the return value indicates whether actual cleaning was done, there
968 * is no guarantee that everything was cleaned
970 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)
972 struct net_device *netdev = adapter->netdev;
973 struct e1000_hw *hw = &adapter->hw;
974 struct e1000_ring *tx_ring = adapter->tx_ring;
975 struct e1000_tx_desc *tx_desc, *eop_desc;
976 struct e1000_buffer *buffer_info;
978 unsigned int count = 0;
979 unsigned int total_tx_bytes = 0, total_tx_packets = 0;
981 i = tx_ring->next_to_clean;
982 eop = tx_ring->buffer_info[i].next_to_watch;
983 eop_desc = E1000_TX_DESC(*tx_ring, eop);
985 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
986 (count < tx_ring->count)) {
987 bool cleaned = false;
988 for (; !cleaned; count++) {
989 tx_desc = E1000_TX_DESC(*tx_ring, i);
990 buffer_info = &tx_ring->buffer_info[i];
991 cleaned = (i == eop);
994 total_tx_packets += buffer_info->segs;
995 total_tx_bytes += buffer_info->bytecount;
998 e1000_put_txbuf(adapter, buffer_info);
999 tx_desc->upper.data = 0;
1002 if (i == tx_ring->count)
1006 if (i == tx_ring->next_to_use)
1008 eop = tx_ring->buffer_info[i].next_to_watch;
1009 eop_desc = E1000_TX_DESC(*tx_ring, eop);
1012 tx_ring->next_to_clean = i;
1014 #define TX_WAKE_THRESHOLD 32
1015 if (count && netif_carrier_ok(netdev) &&
1016 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
1017 /* Make sure that anybody stopping the queue after this
1018 * sees the new next_to_clean.
1022 if (netif_queue_stopped(netdev) &&
1023 !(test_bit(__E1000_DOWN, &adapter->state))) {
1024 netif_wake_queue(netdev);
1025 ++adapter->restart_queue;
1029 if (adapter->detect_tx_hung) {
1031 * Detect a transmit hang in hardware, this serializes the
1032 * check with the clearing of time_stamp and movement of i
1034 adapter->detect_tx_hung = 0;
1035 if (tx_ring->buffer_info[i].time_stamp &&
1036 time_after(jiffies, tx_ring->buffer_info[i].time_stamp
1037 + (adapter->tx_timeout_factor * HZ)) &&
1038 !(er32(STATUS) & E1000_STATUS_TXOFF)) {
1039 schedule_work(&adapter->print_hang_task);
1040 netif_stop_queue(netdev);
1043 adapter->total_tx_bytes += total_tx_bytes;
1044 adapter->total_tx_packets += total_tx_packets;
1045 netdev->stats.tx_bytes += total_tx_bytes;
1046 netdev->stats.tx_packets += total_tx_packets;
1047 return (count < tx_ring->count);
1051 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
1052 * @adapter: board private structure
1054 * the return value indicates whether actual cleaning was done, there
1055 * is no guarantee that everything was cleaned
1057 static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
1058 int *work_done, int work_to_do)
1060 struct e1000_hw *hw = &adapter->hw;
1061 union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
1062 struct net_device *netdev = adapter->netdev;
1063 struct pci_dev *pdev = adapter->pdev;
1064 struct e1000_ring *rx_ring = adapter->rx_ring;
1065 struct e1000_buffer *buffer_info, *next_buffer;
1066 struct e1000_ps_page *ps_page;
1067 struct sk_buff *skb;
1069 u32 length, staterr;
1070 int cleaned_count = 0;
1072 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
1074 i = rx_ring->next_to_clean;
1075 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
1076 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1077 buffer_info = &rx_ring->buffer_info[i];
1079 while (staterr & E1000_RXD_STAT_DD) {
1080 if (*work_done >= work_to_do)
1083 skb = buffer_info->skb;
1085 /* in the packet split case this is header only */
1086 prefetch(skb->data - NET_IP_ALIGN);
1089 if (i == rx_ring->count)
1091 next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
1094 next_buffer = &rx_ring->buffer_info[i];
1098 dma_unmap_single(&pdev->dev, buffer_info->dma,
1099 adapter->rx_ps_bsize0,
1101 buffer_info->dma = 0;
1103 /* see !EOP comment in other rx routine */
1104 if (!(staterr & E1000_RXD_STAT_EOP))
1105 adapter->flags2 |= FLAG2_IS_DISCARDING;
1107 if (adapter->flags2 & FLAG2_IS_DISCARDING) {
1108 e_dbg("Packet Split buffers didn't pick up the full "
1110 dev_kfree_skb_irq(skb);
1111 if (staterr & E1000_RXD_STAT_EOP)
1112 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
1116 if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
1117 dev_kfree_skb_irq(skb);
1121 length = le16_to_cpu(rx_desc->wb.middle.length0);
1124 e_dbg("Last part of the packet spanning multiple "
1126 dev_kfree_skb_irq(skb);
1131 skb_put(skb, length);
1135 * this looks ugly, but it seems compiler issues make it
1136 * more efficient than reusing j
1138 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
1141 * page alloc/put takes too long and effects small packet
1142 * throughput, so unsplit small packets and save the alloc/put
1143 * only valid in softirq (napi) context to call kmap_*
1145 if (l1 && (l1 <= copybreak) &&
1146 ((length + l1) <= adapter->rx_ps_bsize0)) {
1149 ps_page = &buffer_info->ps_pages[0];
1152 * there is no documentation about how to call
1153 * kmap_atomic, so we can't hold the mapping
1156 dma_sync_single_for_cpu(&pdev->dev, ps_page->dma,
1157 PAGE_SIZE, DMA_FROM_DEVICE);
1158 vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ);
1159 memcpy(skb_tail_pointer(skb), vaddr, l1);
1160 kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
1161 dma_sync_single_for_device(&pdev->dev, ps_page->dma,
1162 PAGE_SIZE, DMA_FROM_DEVICE);
1164 /* remove the CRC */
1165 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING))
1173 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
1174 length = le16_to_cpu(rx_desc->wb.upper.length[j]);
1178 ps_page = &buffer_info->ps_pages[j];
1179 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
1182 skb_fill_page_desc(skb, j, ps_page->page, 0, length);
1183 ps_page->page = NULL;
1185 skb->data_len += length;
1186 skb->truesize += length;
1189 /* strip the ethernet crc, problem is we're using pages now so
1190 * this whole operation can get a little cpu intensive
1192 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING))
1193 pskb_trim(skb, skb->len - 4);
1196 total_rx_bytes += skb->len;
1199 e1000_rx_checksum(adapter, staterr, le16_to_cpu(
1200 rx_desc->wb.lower.hi_dword.csum_ip.csum), skb);
1202 if (rx_desc->wb.upper.header_status &
1203 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))
1204 adapter->rx_hdr_split++;
1206 e1000_receive_skb(adapter, netdev, skb,
1207 staterr, rx_desc->wb.middle.vlan);
1210 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
1211 buffer_info->skb = NULL;
1213 /* return some buffers to hardware, one at a time is too slow */
1214 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
1215 adapter->alloc_rx_buf(adapter, cleaned_count);
1219 /* use prefetched values */
1221 buffer_info = next_buffer;
1223 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1225 rx_ring->next_to_clean = i;
1227 cleaned_count = e1000_desc_unused(rx_ring);
1229 adapter->alloc_rx_buf(adapter, cleaned_count);
1231 adapter->total_rx_bytes += total_rx_bytes;
1232 adapter->total_rx_packets += total_rx_packets;
1233 netdev->stats.rx_bytes += total_rx_bytes;
1234 netdev->stats.rx_packets += total_rx_packets;
1239 * e1000_consume_page - helper function
1241 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
1246 skb->data_len += length;
1247 skb->truesize += length;
1251 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1252 * @adapter: board private structure
1254 * the return value indicates whether actual cleaning was done, there
1255 * is no guarantee that everything was cleaned
1258 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
1259 int *work_done, int work_to_do)
1261 struct net_device *netdev = adapter->netdev;
1262 struct pci_dev *pdev = adapter->pdev;
1263 struct e1000_ring *rx_ring = adapter->rx_ring;
1264 struct e1000_rx_desc *rx_desc, *next_rxd;
1265 struct e1000_buffer *buffer_info, *next_buffer;
1268 int cleaned_count = 0;
1269 bool cleaned = false;
1270 unsigned int total_rx_bytes=0, total_rx_packets=0;
1272 i = rx_ring->next_to_clean;
1273 rx_desc = E1000_RX_DESC(*rx_ring, i);
1274 buffer_info = &rx_ring->buffer_info[i];
1276 while (rx_desc->status & E1000_RXD_STAT_DD) {
1277 struct sk_buff *skb;
1280 if (*work_done >= work_to_do)
1284 status = rx_desc->status;
1285 skb = buffer_info->skb;
1286 buffer_info->skb = NULL;
1289 if (i == rx_ring->count)
1291 next_rxd = E1000_RX_DESC(*rx_ring, i);
1294 next_buffer = &rx_ring->buffer_info[i];
1298 dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE,
1300 buffer_info->dma = 0;
1302 length = le16_to_cpu(rx_desc->length);
1304 /* errors is only valid for DD + EOP descriptors */
1305 if (unlikely((status & E1000_RXD_STAT_EOP) &&
1306 (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) {
1307 /* recycle both page and skb */
1308 buffer_info->skb = skb;
1309 /* an error means any chain goes out the window
1311 if (rx_ring->rx_skb_top)
1312 dev_kfree_skb(rx_ring->rx_skb_top);
1313 rx_ring->rx_skb_top = NULL;
1317 #define rxtop rx_ring->rx_skb_top
1318 if (!(status & E1000_RXD_STAT_EOP)) {
1319 /* this descriptor is only the beginning (or middle) */
1321 /* this is the beginning of a chain */
1323 skb_fill_page_desc(rxtop, 0, buffer_info->page,
1326 /* this is the middle of a chain */
1327 skb_fill_page_desc(rxtop,
1328 skb_shinfo(rxtop)->nr_frags,
1329 buffer_info->page, 0, length);
1330 /* re-use the skb, only consumed the page */
1331 buffer_info->skb = skb;
1333 e1000_consume_page(buffer_info, rxtop, length);
1337 /* end of the chain */
1338 skb_fill_page_desc(rxtop,
1339 skb_shinfo(rxtop)->nr_frags,
1340 buffer_info->page, 0, length);
1341 /* re-use the current skb, we only consumed the
1343 buffer_info->skb = skb;
1346 e1000_consume_page(buffer_info, skb, length);
1348 /* no chain, got EOP, this buf is the packet
1349 * copybreak to save the put_page/alloc_page */
1350 if (length <= copybreak &&
1351 skb_tailroom(skb) >= length) {
1353 vaddr = kmap_atomic(buffer_info->page,
1354 KM_SKB_DATA_SOFTIRQ);
1355 memcpy(skb_tail_pointer(skb), vaddr,
1357 kunmap_atomic(vaddr,
1358 KM_SKB_DATA_SOFTIRQ);
1359 /* re-use the page, so don't erase
1360 * buffer_info->page */
1361 skb_put(skb, length);
1363 skb_fill_page_desc(skb, 0,
1364 buffer_info->page, 0,
1366 e1000_consume_page(buffer_info, skb,
1372 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1373 e1000_rx_checksum(adapter,
1375 ((u32)(rx_desc->errors) << 24),
1376 le16_to_cpu(rx_desc->csum), skb);
1378 /* probably a little skewed due to removing CRC */
1379 total_rx_bytes += skb->len;
1382 /* eth type trans needs skb->data to point to something */
1383 if (!pskb_may_pull(skb, ETH_HLEN)) {
1384 e_err("pskb_may_pull failed.\n");
1389 e1000_receive_skb(adapter, netdev, skb, status,
1393 rx_desc->status = 0;
1395 /* return some buffers to hardware, one at a time is too slow */
1396 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
1397 adapter->alloc_rx_buf(adapter, cleaned_count);
1401 /* use prefetched values */
1403 buffer_info = next_buffer;
1405 rx_ring->next_to_clean = i;
1407 cleaned_count = e1000_desc_unused(rx_ring);
1409 adapter->alloc_rx_buf(adapter, cleaned_count);
1411 adapter->total_rx_bytes += total_rx_bytes;
1412 adapter->total_rx_packets += total_rx_packets;
1413 netdev->stats.rx_bytes += total_rx_bytes;
1414 netdev->stats.rx_packets += total_rx_packets;
1419 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1420 * @adapter: board private structure
1422 static void e1000_clean_rx_ring(struct e1000_adapter *adapter)
1424 struct e1000_ring *rx_ring = adapter->rx_ring;
1425 struct e1000_buffer *buffer_info;
1426 struct e1000_ps_page *ps_page;
1427 struct pci_dev *pdev = adapter->pdev;
1430 /* Free all the Rx ring sk_buffs */
1431 for (i = 0; i < rx_ring->count; i++) {
1432 buffer_info = &rx_ring->buffer_info[i];
1433 if (buffer_info->dma) {
1434 if (adapter->clean_rx == e1000_clean_rx_irq)
1435 dma_unmap_single(&pdev->dev, buffer_info->dma,
1436 adapter->rx_buffer_len,
1438 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq)
1439 dma_unmap_page(&pdev->dev, buffer_info->dma,
1442 else if (adapter->clean_rx == e1000_clean_rx_irq_ps)
1443 dma_unmap_single(&pdev->dev, buffer_info->dma,
1444 adapter->rx_ps_bsize0,
1446 buffer_info->dma = 0;
1449 if (buffer_info->page) {
1450 put_page(buffer_info->page);
1451 buffer_info->page = NULL;
1454 if (buffer_info->skb) {
1455 dev_kfree_skb(buffer_info->skb);
1456 buffer_info->skb = NULL;
1459 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
1460 ps_page = &buffer_info->ps_pages[j];
1463 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
1466 put_page(ps_page->page);
1467 ps_page->page = NULL;
1471 /* there also may be some cached data from a chained receive */
1472 if (rx_ring->rx_skb_top) {
1473 dev_kfree_skb(rx_ring->rx_skb_top);
1474 rx_ring->rx_skb_top = NULL;
1477 /* Zero out the descriptor ring */
1478 memset(rx_ring->desc, 0, rx_ring->size);
1480 rx_ring->next_to_clean = 0;
1481 rx_ring->next_to_use = 0;
1482 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
1484 writel(0, adapter->hw.hw_addr + rx_ring->head);
1485 writel(0, adapter->hw.hw_addr + rx_ring->tail);
1488 static void e1000e_downshift_workaround(struct work_struct *work)
1490 struct e1000_adapter *adapter = container_of(work,
1491 struct e1000_adapter, downshift_task);
1493 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw);
1497 * e1000_intr_msi - Interrupt Handler
1498 * @irq: interrupt number
1499 * @data: pointer to a network interface device structure
1501 static irqreturn_t e1000_intr_msi(int irq, void *data)
1503 struct net_device *netdev = data;
1504 struct e1000_adapter *adapter = netdev_priv(netdev);
1505 struct e1000_hw *hw = &adapter->hw;
1506 u32 icr = er32(ICR);
1509 * read ICR disables interrupts using IAM
1512 if (icr & E1000_ICR_LSC) {
1513 hw->mac.get_link_status = 1;
1515 * ICH8 workaround-- Call gig speed drop workaround on cable
1516 * disconnect (LSC) before accessing any PHY registers
1518 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1519 (!(er32(STATUS) & E1000_STATUS_LU)))
1520 schedule_work(&adapter->downshift_task);
1523 * 80003ES2LAN workaround-- For packet buffer work-around on
1524 * link down event; disable receives here in the ISR and reset
1525 * adapter in watchdog
1527 if (netif_carrier_ok(netdev) &&
1528 adapter->flags & FLAG_RX_NEEDS_RESTART) {
1529 /* disable receives */
1530 u32 rctl = er32(RCTL);
1531 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1532 adapter->flags |= FLAG_RX_RESTART_NOW;
1534 /* guard against interrupt when we're going down */
1535 if (!test_bit(__E1000_DOWN, &adapter->state))
1536 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1539 if (napi_schedule_prep(&adapter->napi)) {
1540 adapter->total_tx_bytes = 0;
1541 adapter->total_tx_packets = 0;
1542 adapter->total_rx_bytes = 0;
1543 adapter->total_rx_packets = 0;
1544 __napi_schedule(&adapter->napi);
1551 * e1000_intr - Interrupt Handler
1552 * @irq: interrupt number
1553 * @data: pointer to a network interface device structure
1555 static irqreturn_t e1000_intr(int irq, void *data)
1557 struct net_device *netdev = data;
1558 struct e1000_adapter *adapter = netdev_priv(netdev);
1559 struct e1000_hw *hw = &adapter->hw;
1560 u32 rctl, icr = er32(ICR);
1562 if (!icr || test_bit(__E1000_DOWN, &adapter->state))
1563 return IRQ_NONE; /* Not our interrupt */
1566 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1567 * not set, then the adapter didn't send an interrupt
1569 if (!(icr & E1000_ICR_INT_ASSERTED))
1573 * Interrupt Auto-Mask...upon reading ICR,
1574 * interrupts are masked. No need for the
1578 if (icr & E1000_ICR_LSC) {
1579 hw->mac.get_link_status = 1;
1581 * ICH8 workaround-- Call gig speed drop workaround on cable
1582 * disconnect (LSC) before accessing any PHY registers
1584 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1585 (!(er32(STATUS) & E1000_STATUS_LU)))
1586 schedule_work(&adapter->downshift_task);
1589 * 80003ES2LAN workaround--
1590 * For packet buffer work-around on link down event;
1591 * disable receives here in the ISR and
1592 * reset adapter in watchdog
1594 if (netif_carrier_ok(netdev) &&
1595 (adapter->flags & FLAG_RX_NEEDS_RESTART)) {
1596 /* disable receives */
1598 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1599 adapter->flags |= FLAG_RX_RESTART_NOW;
1601 /* guard against interrupt when we're going down */
1602 if (!test_bit(__E1000_DOWN, &adapter->state))
1603 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1606 if (napi_schedule_prep(&adapter->napi)) {
1607 adapter->total_tx_bytes = 0;
1608 adapter->total_tx_packets = 0;
1609 adapter->total_rx_bytes = 0;
1610 adapter->total_rx_packets = 0;
1611 __napi_schedule(&adapter->napi);
1617 static irqreturn_t e1000_msix_other(int irq, void *data)
1619 struct net_device *netdev = data;
1620 struct e1000_adapter *adapter = netdev_priv(netdev);
1621 struct e1000_hw *hw = &adapter->hw;
1622 u32 icr = er32(ICR);
1624 if (!(icr & E1000_ICR_INT_ASSERTED)) {
1625 if (!test_bit(__E1000_DOWN, &adapter->state))
1626 ew32(IMS, E1000_IMS_OTHER);
1630 if (icr & adapter->eiac_mask)
1631 ew32(ICS, (icr & adapter->eiac_mask));
1633 if (icr & E1000_ICR_OTHER) {
1634 if (!(icr & E1000_ICR_LSC))
1635 goto no_link_interrupt;
1636 hw->mac.get_link_status = 1;
1637 /* guard against interrupt when we're going down */
1638 if (!test_bit(__E1000_DOWN, &adapter->state))
1639 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1643 if (!test_bit(__E1000_DOWN, &adapter->state))
1644 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER);
1650 static irqreturn_t e1000_intr_msix_tx(int irq, void *data)
1652 struct net_device *netdev = data;
1653 struct e1000_adapter *adapter = netdev_priv(netdev);
1654 struct e1000_hw *hw = &adapter->hw;
1655 struct e1000_ring *tx_ring = adapter->tx_ring;
1658 adapter->total_tx_bytes = 0;
1659 adapter->total_tx_packets = 0;
1661 if (!e1000_clean_tx_irq(adapter))
1662 /* Ring was not completely cleaned, so fire another interrupt */
1663 ew32(ICS, tx_ring->ims_val);
1668 static irqreturn_t e1000_intr_msix_rx(int irq, void *data)
1670 struct net_device *netdev = data;
1671 struct e1000_adapter *adapter = netdev_priv(netdev);
1673 /* Write the ITR value calculated at the end of the
1674 * previous interrupt.
1676 if (adapter->rx_ring->set_itr) {
1677 writel(1000000000 / (adapter->rx_ring->itr_val * 256),
1678 adapter->hw.hw_addr + adapter->rx_ring->itr_register);
1679 adapter->rx_ring->set_itr = 0;
1682 if (napi_schedule_prep(&adapter->napi)) {
1683 adapter->total_rx_bytes = 0;
1684 adapter->total_rx_packets = 0;
1685 __napi_schedule(&adapter->napi);
1691 * e1000_configure_msix - Configure MSI-X hardware
1693 * e1000_configure_msix sets up the hardware to properly
1694 * generate MSI-X interrupts.
1696 static void e1000_configure_msix(struct e1000_adapter *adapter)
1698 struct e1000_hw *hw = &adapter->hw;
1699 struct e1000_ring *rx_ring = adapter->rx_ring;
1700 struct e1000_ring *tx_ring = adapter->tx_ring;
1702 u32 ctrl_ext, ivar = 0;
1704 adapter->eiac_mask = 0;
1706 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1707 if (hw->mac.type == e1000_82574) {
1708 u32 rfctl = er32(RFCTL);
1709 rfctl |= E1000_RFCTL_ACK_DIS;
1713 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1714 /* Configure Rx vector */
1715 rx_ring->ims_val = E1000_IMS_RXQ0;
1716 adapter->eiac_mask |= rx_ring->ims_val;
1717 if (rx_ring->itr_val)
1718 writel(1000000000 / (rx_ring->itr_val * 256),
1719 hw->hw_addr + rx_ring->itr_register);
1721 writel(1, hw->hw_addr + rx_ring->itr_register);
1722 ivar = E1000_IVAR_INT_ALLOC_VALID | vector;
1724 /* Configure Tx vector */
1725 tx_ring->ims_val = E1000_IMS_TXQ0;
1727 if (tx_ring->itr_val)
1728 writel(1000000000 / (tx_ring->itr_val * 256),
1729 hw->hw_addr + tx_ring->itr_register);
1731 writel(1, hw->hw_addr + tx_ring->itr_register);
1732 adapter->eiac_mask |= tx_ring->ims_val;
1733 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8);
1735 /* set vector for Other Causes, e.g. link changes */
1737 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16);
1738 if (rx_ring->itr_val)
1739 writel(1000000000 / (rx_ring->itr_val * 256),
1740 hw->hw_addr + E1000_EITR_82574(vector));
1742 writel(1, hw->hw_addr + E1000_EITR_82574(vector));
1744 /* Cause Tx interrupts on every write back */
1749 /* enable MSI-X PBA support */
1750 ctrl_ext = er32(CTRL_EXT);
1751 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR;
1753 /* Auto-Mask Other interrupts upon ICR read */
1754 #define E1000_EIAC_MASK_82574 0x01F00000
1755 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER);
1756 ctrl_ext |= E1000_CTRL_EXT_EIAME;
1757 ew32(CTRL_EXT, ctrl_ext);
1761 void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter)
1763 if (adapter->msix_entries) {
1764 pci_disable_msix(adapter->pdev);
1765 kfree(adapter->msix_entries);
1766 adapter->msix_entries = NULL;
1767 } else if (adapter->flags & FLAG_MSI_ENABLED) {
1768 pci_disable_msi(adapter->pdev);
1769 adapter->flags &= ~FLAG_MSI_ENABLED;
1774 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1776 * Attempt to configure interrupts using the best available
1777 * capabilities of the hardware and kernel.
1779 void e1000e_set_interrupt_capability(struct e1000_adapter *adapter)
1785 switch (adapter->int_mode) {
1786 case E1000E_INT_MODE_MSIX:
1787 if (adapter->flags & FLAG_HAS_MSIX) {
1788 numvecs = 3; /* RxQ0, TxQ0 and other */
1789 adapter->msix_entries = kcalloc(numvecs,
1790 sizeof(struct msix_entry),
1792 if (adapter->msix_entries) {
1793 for (i = 0; i < numvecs; i++)
1794 adapter->msix_entries[i].entry = i;
1796 err = pci_enable_msix(adapter->pdev,
1797 adapter->msix_entries,
1802 /* MSI-X failed, so fall through and try MSI */
1803 e_err("Failed to initialize MSI-X interrupts. "
1804 "Falling back to MSI interrupts.\n");
1805 e1000e_reset_interrupt_capability(adapter);
1807 adapter->int_mode = E1000E_INT_MODE_MSI;
1809 case E1000E_INT_MODE_MSI:
1810 if (!pci_enable_msi(adapter->pdev)) {
1811 adapter->flags |= FLAG_MSI_ENABLED;
1813 adapter->int_mode = E1000E_INT_MODE_LEGACY;
1814 e_err("Failed to initialize MSI interrupts. Falling "
1815 "back to legacy interrupts.\n");
1818 case E1000E_INT_MODE_LEGACY:
1819 /* Don't do anything; this is the system default */
1825 * e1000_request_msix - Initialize MSI-X interrupts
1827 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1830 static int e1000_request_msix(struct e1000_adapter *adapter)
1832 struct net_device *netdev = adapter->netdev;
1833 int err = 0, vector = 0;
1835 if (strlen(netdev->name) < (IFNAMSIZ - 5))
1836 sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name);
1838 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
1839 err = request_irq(adapter->msix_entries[vector].vector,
1840 e1000_intr_msix_rx, 0, adapter->rx_ring->name,
1844 adapter->rx_ring->itr_register = E1000_EITR_82574(vector);
1845 adapter->rx_ring->itr_val = adapter->itr;
1848 if (strlen(netdev->name) < (IFNAMSIZ - 5))
1849 sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name);
1851 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
1852 err = request_irq(adapter->msix_entries[vector].vector,
1853 e1000_intr_msix_tx, 0, adapter->tx_ring->name,
1857 adapter->tx_ring->itr_register = E1000_EITR_82574(vector);
1858 adapter->tx_ring->itr_val = adapter->itr;
1861 err = request_irq(adapter->msix_entries[vector].vector,
1862 e1000_msix_other, 0, netdev->name, netdev);
1866 e1000_configure_msix(adapter);
1873 * e1000_request_irq - initialize interrupts
1875 * Attempts to configure interrupts using the best available
1876 * capabilities of the hardware and kernel.
1878 static int e1000_request_irq(struct e1000_adapter *adapter)
1880 struct net_device *netdev = adapter->netdev;
1883 if (adapter->msix_entries) {
1884 err = e1000_request_msix(adapter);
1887 /* fall back to MSI */
1888 e1000e_reset_interrupt_capability(adapter);
1889 adapter->int_mode = E1000E_INT_MODE_MSI;
1890 e1000e_set_interrupt_capability(adapter);
1892 if (adapter->flags & FLAG_MSI_ENABLED) {
1893 err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0,
1894 netdev->name, netdev);
1898 /* fall back to legacy interrupt */
1899 e1000e_reset_interrupt_capability(adapter);
1900 adapter->int_mode = E1000E_INT_MODE_LEGACY;
1903 err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED,
1904 netdev->name, netdev);
1906 e_err("Unable to allocate interrupt, Error: %d\n", err);
1911 static void e1000_free_irq(struct e1000_adapter *adapter)
1913 struct net_device *netdev = adapter->netdev;
1915 if (adapter->msix_entries) {
1918 free_irq(adapter->msix_entries[vector].vector, netdev);
1921 free_irq(adapter->msix_entries[vector].vector, netdev);
1924 /* Other Causes interrupt vector */
1925 free_irq(adapter->msix_entries[vector].vector, netdev);
1929 free_irq(adapter->pdev->irq, netdev);
1933 * e1000_irq_disable - Mask off interrupt generation on the NIC
1935 static void e1000_irq_disable(struct e1000_adapter *adapter)
1937 struct e1000_hw *hw = &adapter->hw;
1940 if (adapter->msix_entries)
1941 ew32(EIAC_82574, 0);
1943 synchronize_irq(adapter->pdev->irq);
1947 * e1000_irq_enable - Enable default interrupt generation settings
1949 static void e1000_irq_enable(struct e1000_adapter *adapter)
1951 struct e1000_hw *hw = &adapter->hw;
1953 if (adapter->msix_entries) {
1954 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574);
1955 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC);
1957 ew32(IMS, IMS_ENABLE_MASK);
1963 * e1000_get_hw_control - get control of the h/w from f/w
1964 * @adapter: address of board private structure
1966 * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1967 * For ASF and Pass Through versions of f/w this means that
1968 * the driver is loaded. For AMT version (only with 82573)
1969 * of the f/w this means that the network i/f is open.
1971 static void e1000_get_hw_control(struct e1000_adapter *adapter)
1973 struct e1000_hw *hw = &adapter->hw;
1977 /* Let firmware know the driver has taken over */
1978 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
1980 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
1981 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
1982 ctrl_ext = er32(CTRL_EXT);
1983 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
1988 * e1000_release_hw_control - release control of the h/w to f/w
1989 * @adapter: address of board private structure
1991 * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1992 * For ASF and Pass Through versions of f/w this means that the
1993 * driver is no longer loaded. For AMT version (only with 82573) i
1994 * of the f/w this means that the network i/f is closed.
1997 static void e1000_release_hw_control(struct e1000_adapter *adapter)
1999 struct e1000_hw *hw = &adapter->hw;
2003 /* Let firmware taken over control of h/w */
2004 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
2006 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
2007 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
2008 ctrl_ext = er32(CTRL_EXT);
2009 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
2014 * @e1000_alloc_ring - allocate memory for a ring structure
2016 static int e1000_alloc_ring_dma(struct e1000_adapter *adapter,
2017 struct e1000_ring *ring)
2019 struct pci_dev *pdev = adapter->pdev;
2021 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma,
2030 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
2031 * @adapter: board private structure
2033 * Return 0 on success, negative on failure
2035 int e1000e_setup_tx_resources(struct e1000_adapter *adapter)
2037 struct e1000_ring *tx_ring = adapter->tx_ring;
2038 int err = -ENOMEM, size;
2040 size = sizeof(struct e1000_buffer) * tx_ring->count;
2041 tx_ring->buffer_info = vmalloc(size);
2042 if (!tx_ring->buffer_info)
2044 memset(tx_ring->buffer_info, 0, size);
2046 /* round up to nearest 4K */
2047 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
2048 tx_ring->size = ALIGN(tx_ring->size, 4096);
2050 err = e1000_alloc_ring_dma(adapter, tx_ring);
2054 tx_ring->next_to_use = 0;
2055 tx_ring->next_to_clean = 0;
2059 vfree(tx_ring->buffer_info);
2060 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2065 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
2066 * @adapter: board private structure
2068 * Returns 0 on success, negative on failure
2070 int e1000e_setup_rx_resources(struct e1000_adapter *adapter)
2072 struct e1000_ring *rx_ring = adapter->rx_ring;
2073 struct e1000_buffer *buffer_info;
2074 int i, size, desc_len, err = -ENOMEM;
2076 size = sizeof(struct e1000_buffer) * rx_ring->count;
2077 rx_ring->buffer_info = vmalloc(size);
2078 if (!rx_ring->buffer_info)
2080 memset(rx_ring->buffer_info, 0, size);
2082 for (i = 0; i < rx_ring->count; i++) {
2083 buffer_info = &rx_ring->buffer_info[i];
2084 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS,
2085 sizeof(struct e1000_ps_page),
2087 if (!buffer_info->ps_pages)
2091 desc_len = sizeof(union e1000_rx_desc_packet_split);
2093 /* Round up to nearest 4K */
2094 rx_ring->size = rx_ring->count * desc_len;
2095 rx_ring->size = ALIGN(rx_ring->size, 4096);
2097 err = e1000_alloc_ring_dma(adapter, rx_ring);
2101 rx_ring->next_to_clean = 0;
2102 rx_ring->next_to_use = 0;
2103 rx_ring->rx_skb_top = NULL;
2108 for (i = 0; i < rx_ring->count; i++) {
2109 buffer_info = &rx_ring->buffer_info[i];
2110 kfree(buffer_info->ps_pages);
2113 vfree(rx_ring->buffer_info);
2114 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2119 * e1000_clean_tx_ring - Free Tx Buffers
2120 * @adapter: board private structure
2122 static void e1000_clean_tx_ring(struct e1000_adapter *adapter)
2124 struct e1000_ring *tx_ring = adapter->tx_ring;
2125 struct e1000_buffer *buffer_info;
2129 for (i = 0; i < tx_ring->count; i++) {
2130 buffer_info = &tx_ring->buffer_info[i];
2131 e1000_put_txbuf(adapter, buffer_info);
2134 size = sizeof(struct e1000_buffer) * tx_ring->count;
2135 memset(tx_ring->buffer_info, 0, size);
2137 memset(tx_ring->desc, 0, tx_ring->size);
2139 tx_ring->next_to_use = 0;
2140 tx_ring->next_to_clean = 0;
2142 writel(0, adapter->hw.hw_addr + tx_ring->head);
2143 writel(0, adapter->hw.hw_addr + tx_ring->tail);
2147 * e1000e_free_tx_resources - Free Tx Resources per Queue
2148 * @adapter: board private structure
2150 * Free all transmit software resources
2152 void e1000e_free_tx_resources(struct e1000_adapter *adapter)
2154 struct pci_dev *pdev = adapter->pdev;
2155 struct e1000_ring *tx_ring = adapter->tx_ring;
2157 e1000_clean_tx_ring(adapter);
2159 vfree(tx_ring->buffer_info);
2160 tx_ring->buffer_info = NULL;
2162 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
2164 tx_ring->desc = NULL;
2168 * e1000e_free_rx_resources - Free Rx Resources
2169 * @adapter: board private structure
2171 * Free all receive software resources
2174 void e1000e_free_rx_resources(struct e1000_adapter *adapter)
2176 struct pci_dev *pdev = adapter->pdev;
2177 struct e1000_ring *rx_ring = adapter->rx_ring;
2180 e1000_clean_rx_ring(adapter);
2182 for (i = 0; i < rx_ring->count; i++) {
2183 kfree(rx_ring->buffer_info[i].ps_pages);
2186 vfree(rx_ring->buffer_info);
2187 rx_ring->buffer_info = NULL;
2189 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
2191 rx_ring->desc = NULL;
2195 * e1000_update_itr - update the dynamic ITR value based on statistics
2196 * @adapter: pointer to adapter
2197 * @itr_setting: current adapter->itr
2198 * @packets: the number of packets during this measurement interval
2199 * @bytes: the number of bytes during this measurement interval
2201 * Stores a new ITR value based on packets and byte
2202 * counts during the last interrupt. The advantage of per interrupt
2203 * computation is faster updates and more accurate ITR for the current
2204 * traffic pattern. Constants in this function were computed
2205 * based on theoretical maximum wire speed and thresholds were set based
2206 * on testing data as well as attempting to minimize response time
2207 * while increasing bulk throughput. This functionality is controlled
2208 * by the InterruptThrottleRate module parameter.
2210 static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
2211 u16 itr_setting, int packets,
2214 unsigned int retval = itr_setting;
2217 goto update_itr_done;
2219 switch (itr_setting) {
2220 case lowest_latency:
2221 /* handle TSO and jumbo frames */
2222 if (bytes/packets > 8000)
2223 retval = bulk_latency;
2224 else if ((packets < 5) && (bytes > 512)) {
2225 retval = low_latency;
2228 case low_latency: /* 50 usec aka 20000 ints/s */
2229 if (bytes > 10000) {
2230 /* this if handles the TSO accounting */
2231 if (bytes/packets > 8000) {
2232 retval = bulk_latency;
2233 } else if ((packets < 10) || ((bytes/packets) > 1200)) {
2234 retval = bulk_latency;
2235 } else if ((packets > 35)) {
2236 retval = lowest_latency;
2238 } else if (bytes/packets > 2000) {
2239 retval = bulk_latency;
2240 } else if (packets <= 2 && bytes < 512) {
2241 retval = lowest_latency;
2244 case bulk_latency: /* 250 usec aka 4000 ints/s */
2245 if (bytes > 25000) {
2247 retval = low_latency;
2249 } else if (bytes < 6000) {
2250 retval = low_latency;
2259 static void e1000_set_itr(struct e1000_adapter *adapter)
2261 struct e1000_hw *hw = &adapter->hw;
2263 u32 new_itr = adapter->itr;
2265 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2266 if (adapter->link_speed != SPEED_1000) {
2272 adapter->tx_itr = e1000_update_itr(adapter,
2274 adapter->total_tx_packets,
2275 adapter->total_tx_bytes);
2276 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2277 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
2278 adapter->tx_itr = low_latency;
2280 adapter->rx_itr = e1000_update_itr(adapter,
2282 adapter->total_rx_packets,
2283 adapter->total_rx_bytes);
2284 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2285 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
2286 adapter->rx_itr = low_latency;
2288 current_itr = max(adapter->rx_itr, adapter->tx_itr);
2290 switch (current_itr) {
2291 /* counts and packets in update_itr are dependent on these numbers */
2292 case lowest_latency:
2296 new_itr = 20000; /* aka hwitr = ~200 */
2306 if (new_itr != adapter->itr) {
2308 * this attempts to bias the interrupt rate towards Bulk
2309 * by adding intermediate steps when interrupt rate is
2312 new_itr = new_itr > adapter->itr ?
2313 min(adapter->itr + (new_itr >> 2), new_itr) :
2315 adapter->itr = new_itr;
2316 adapter->rx_ring->itr_val = new_itr;
2317 if (adapter->msix_entries)
2318 adapter->rx_ring->set_itr = 1;
2320 ew32(ITR, 1000000000 / (new_itr * 256));
2325 * e1000_alloc_queues - Allocate memory for all rings
2326 * @adapter: board private structure to initialize
2328 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter)
2330 adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
2331 if (!adapter->tx_ring)
2334 adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
2335 if (!adapter->rx_ring)
2340 e_err("Unable to allocate memory for queues\n");
2341 kfree(adapter->rx_ring);
2342 kfree(adapter->tx_ring);
2347 * e1000_clean - NAPI Rx polling callback
2348 * @napi: struct associated with this polling callback
2349 * @budget: amount of packets driver is allowed to process this poll
2351 static int e1000_clean(struct napi_struct *napi, int budget)
2353 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
2354 struct e1000_hw *hw = &adapter->hw;
2355 struct net_device *poll_dev = adapter->netdev;
2356 int tx_cleaned = 1, work_done = 0;
2358 adapter = netdev_priv(poll_dev);
2360 if (adapter->msix_entries &&
2361 !(adapter->rx_ring->ims_val & adapter->tx_ring->ims_val))
2364 tx_cleaned = e1000_clean_tx_irq(adapter);
2367 adapter->clean_rx(adapter, &work_done, budget);
2372 /* If budget not fully consumed, exit the polling mode */
2373 if (work_done < budget) {
2374 if (adapter->itr_setting & 3)
2375 e1000_set_itr(adapter);
2376 napi_complete(napi);
2377 if (!test_bit(__E1000_DOWN, &adapter->state)) {
2378 if (adapter->msix_entries)
2379 ew32(IMS, adapter->rx_ring->ims_val);
2381 e1000_irq_enable(adapter);
2388 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
2390 struct e1000_adapter *adapter = netdev_priv(netdev);
2391 struct e1000_hw *hw = &adapter->hw;
2394 /* don't update vlan cookie if already programmed */
2395 if ((adapter->hw.mng_cookie.status &
2396 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2397 (vid == adapter->mng_vlan_id))
2400 /* add VID to filter table */
2401 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2402 index = (vid >> 5) & 0x7F;
2403 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2404 vfta |= (1 << (vid & 0x1F));
2405 hw->mac.ops.write_vfta(hw, index, vfta);
2409 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
2411 struct e1000_adapter *adapter = netdev_priv(netdev);
2412 struct e1000_hw *hw = &adapter->hw;
2415 if (!test_bit(__E1000_DOWN, &adapter->state))
2416 e1000_irq_disable(adapter);
2417 vlan_group_set_device(adapter->vlgrp, vid, NULL);
2419 if (!test_bit(__E1000_DOWN, &adapter->state))
2420 e1000_irq_enable(adapter);
2422 if ((adapter->hw.mng_cookie.status &
2423 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2424 (vid == adapter->mng_vlan_id)) {
2425 /* release control to f/w */
2426 e1000_release_hw_control(adapter);
2430 /* remove VID from filter table */
2431 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2432 index = (vid >> 5) & 0x7F;
2433 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2434 vfta &= ~(1 << (vid & 0x1F));
2435 hw->mac.ops.write_vfta(hw, index, vfta);
2439 static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
2441 struct net_device *netdev = adapter->netdev;
2442 u16 vid = adapter->hw.mng_cookie.vlan_id;
2443 u16 old_vid = adapter->mng_vlan_id;
2445 if (!adapter->vlgrp)
2448 if (!vlan_group_get_device(adapter->vlgrp, vid)) {
2449 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2450 if (adapter->hw.mng_cookie.status &
2451 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
2452 e1000_vlan_rx_add_vid(netdev, vid);
2453 adapter->mng_vlan_id = vid;
2456 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) &&
2458 !vlan_group_get_device(adapter->vlgrp, old_vid))
2459 e1000_vlan_rx_kill_vid(netdev, old_vid);
2461 adapter->mng_vlan_id = vid;
2466 static void e1000_vlan_rx_register(struct net_device *netdev,
2467 struct vlan_group *grp)
2469 struct e1000_adapter *adapter = netdev_priv(netdev);
2470 struct e1000_hw *hw = &adapter->hw;
2473 if (!test_bit(__E1000_DOWN, &adapter->state))
2474 e1000_irq_disable(adapter);
2475 adapter->vlgrp = grp;
2478 /* enable VLAN tag insert/strip */
2480 ctrl |= E1000_CTRL_VME;
2483 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2484 /* enable VLAN receive filtering */
2486 rctl &= ~E1000_RCTL_CFIEN;
2488 e1000_update_mng_vlan(adapter);
2491 /* disable VLAN tag insert/strip */
2493 ctrl &= ~E1000_CTRL_VME;
2496 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2497 if (adapter->mng_vlan_id !=
2498 (u16)E1000_MNG_VLAN_NONE) {
2499 e1000_vlan_rx_kill_vid(netdev,
2500 adapter->mng_vlan_id);
2501 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2506 if (!test_bit(__E1000_DOWN, &adapter->state))
2507 e1000_irq_enable(adapter);
2510 static void e1000_restore_vlan(struct e1000_adapter *adapter)
2514 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
2516 if (!adapter->vlgrp)
2519 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
2520 if (!vlan_group_get_device(adapter->vlgrp, vid))
2522 e1000_vlan_rx_add_vid(adapter->netdev, vid);
2526 static void e1000_init_manageability_pt(struct e1000_adapter *adapter)
2528 struct e1000_hw *hw = &adapter->hw;
2529 u32 manc, manc2h, mdef, i, j;
2531 if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
2537 * enable receiving management packets to the host. this will probably
2538 * generate destination unreachable messages from the host OS, but
2539 * the packets will be handled on SMBUS
2541 manc |= E1000_MANC_EN_MNG2HOST;
2542 manc2h = er32(MANC2H);
2544 switch (hw->mac.type) {
2546 manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664);
2551 * Check if IPMI pass-through decision filter already exists;
2554 for (i = 0, j = 0; i < 8; i++) {
2555 mdef = er32(MDEF(i));
2557 /* Ignore filters with anything other than IPMI ports */
2558 if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
2561 /* Enable this decision filter in MANC2H */
2568 if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
2571 /* Create new decision filter in an empty filter */
2572 for (i = 0, j = 0; i < 8; i++)
2573 if (er32(MDEF(i)) == 0) {
2574 ew32(MDEF(i), (E1000_MDEF_PORT_623 |
2575 E1000_MDEF_PORT_664));
2582 e_warn("Unable to create IPMI pass-through filter\n");
2586 ew32(MANC2H, manc2h);
2591 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
2592 * @adapter: board private structure
2594 * Configure the Tx unit of the MAC after a reset.
2596 static void e1000_configure_tx(struct e1000_adapter *adapter)
2598 struct e1000_hw *hw = &adapter->hw;
2599 struct e1000_ring *tx_ring = adapter->tx_ring;
2601 u32 tdlen, tctl, tipg, tarc;
2604 /* Setup the HW Tx Head and Tail descriptor pointers */
2605 tdba = tx_ring->dma;
2606 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc);
2607 ew32(TDBAL, (tdba & DMA_BIT_MASK(32)));
2608 ew32(TDBAH, (tdba >> 32));
2612 tx_ring->head = E1000_TDH;
2613 tx_ring->tail = E1000_TDT;
2615 /* Set the default values for the Tx Inter Packet Gap timer */
2616 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; /* 8 */
2617 ipgr1 = DEFAULT_82543_TIPG_IPGR1; /* 8 */
2618 ipgr2 = DEFAULT_82543_TIPG_IPGR2; /* 6 */
2620 if (adapter->flags & FLAG_TIPG_MEDIUM_FOR_80003ESLAN)
2621 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; /* 7 */
2623 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
2624 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
2627 /* Set the Tx Interrupt Delay register */
2628 ew32(TIDV, adapter->tx_int_delay);
2629 /* Tx irq moderation */
2630 ew32(TADV, adapter->tx_abs_int_delay);
2632 /* Program the Transmit Control Register */
2634 tctl &= ~E1000_TCTL_CT;
2635 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
2636 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
2638 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) {
2639 tarc = er32(TARC(0));
2641 * set the speed mode bit, we'll clear it if we're not at
2642 * gigabit link later
2644 #define SPEED_MODE_BIT (1 << 21)
2645 tarc |= SPEED_MODE_BIT;
2646 ew32(TARC(0), tarc);
2649 /* errata: program both queues to unweighted RR */
2650 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) {
2651 tarc = er32(TARC(0));
2653 ew32(TARC(0), tarc);
2654 tarc = er32(TARC(1));
2656 ew32(TARC(1), tarc);
2659 /* Setup Transmit Descriptor Settings for eop descriptor */
2660 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
2662 /* only set IDE if we are delaying interrupts using the timers */
2663 if (adapter->tx_int_delay)
2664 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
2666 /* enable Report Status bit */
2667 adapter->txd_cmd |= E1000_TXD_CMD_RS;
2671 e1000e_config_collision_dist(hw);
2675 * e1000_setup_rctl - configure the receive control registers
2676 * @adapter: Board private structure
2678 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2679 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2680 static void e1000_setup_rctl(struct e1000_adapter *adapter)
2682 struct e1000_hw *hw = &adapter->hw;
2687 /* Program MC offset vector base */
2689 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2690 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
2691 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
2692 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
2694 /* Do not Store bad packets */
2695 rctl &= ~E1000_RCTL_SBP;
2697 /* Enable Long Packet receive */
2698 if (adapter->netdev->mtu <= ETH_DATA_LEN)
2699 rctl &= ~E1000_RCTL_LPE;
2701 rctl |= E1000_RCTL_LPE;
2703 /* Some systems expect that the CRC is included in SMBUS traffic. The
2704 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2705 * host memory when this is enabled
2707 if (adapter->flags2 & FLAG2_CRC_STRIPPING)
2708 rctl |= E1000_RCTL_SECRC;
2710 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
2711 if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) {
2714 e1e_rphy(hw, PHY_REG(770, 26), &phy_data);
2716 phy_data |= (1 << 2);
2717 e1e_wphy(hw, PHY_REG(770, 26), phy_data);
2719 e1e_rphy(hw, 22, &phy_data);
2721 phy_data |= (1 << 14);
2722 e1e_wphy(hw, 0x10, 0x2823);
2723 e1e_wphy(hw, 0x11, 0x0003);
2724 e1e_wphy(hw, 22, phy_data);
2727 /* Workaround Si errata on 82579 - configure jumbo frame flow */
2728 if (hw->mac.type == e1000_pch2lan) {
2731 if (rctl & E1000_RCTL_LPE)
2732 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true);
2734 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false);
2737 /* Setup buffer sizes */
2738 rctl &= ~E1000_RCTL_SZ_4096;
2739 rctl |= E1000_RCTL_BSEX;
2740 switch (adapter->rx_buffer_len) {
2743 rctl |= E1000_RCTL_SZ_2048;
2744 rctl &= ~E1000_RCTL_BSEX;
2747 rctl |= E1000_RCTL_SZ_4096;
2750 rctl |= E1000_RCTL_SZ_8192;
2753 rctl |= E1000_RCTL_SZ_16384;
2758 * 82571 and greater support packet-split where the protocol
2759 * header is placed in skb->data and the packet data is
2760 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2761 * In the case of a non-split, skb->data is linearly filled,
2762 * followed by the page buffers. Therefore, skb->data is
2763 * sized to hold the largest protocol header.
2765 * allocations using alloc_page take too long for regular MTU
2766 * so only enable packet split for jumbo frames
2768 * Using pages when the page size is greater than 16k wastes
2769 * a lot of memory, since we allocate 3 pages at all times
2772 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
2773 if (!(adapter->flags & FLAG_IS_ICH) && (pages <= 3) &&
2774 (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE))
2775 adapter->rx_ps_pages = pages;
2777 adapter->rx_ps_pages = 0;
2779 if (adapter->rx_ps_pages) {
2780 /* Configure extra packet-split registers */
2781 rfctl = er32(RFCTL);
2782 rfctl |= E1000_RFCTL_EXTEN;
2784 * disable packet split support for IPv6 extension headers,
2785 * because some malformed IPv6 headers can hang the Rx
2787 rfctl |= (E1000_RFCTL_IPV6_EX_DIS |
2788 E1000_RFCTL_NEW_IPV6_EXT_DIS);
2792 /* Enable Packet split descriptors */
2793 rctl |= E1000_RCTL_DTYP_PS;
2795 psrctl |= adapter->rx_ps_bsize0 >>
2796 E1000_PSRCTL_BSIZE0_SHIFT;
2798 switch (adapter->rx_ps_pages) {
2800 psrctl |= PAGE_SIZE <<
2801 E1000_PSRCTL_BSIZE3_SHIFT;
2803 psrctl |= PAGE_SIZE <<
2804 E1000_PSRCTL_BSIZE2_SHIFT;
2806 psrctl |= PAGE_SIZE >>
2807 E1000_PSRCTL_BSIZE1_SHIFT;
2811 ew32(PSRCTL, psrctl);
2815 /* just started the receive unit, no need to restart */
2816 adapter->flags &= ~FLAG_RX_RESTART_NOW;
2820 * e1000_configure_rx - Configure Receive Unit after Reset
2821 * @adapter: board private structure
2823 * Configure the Rx unit of the MAC after a reset.
2825 static void e1000_configure_rx(struct e1000_adapter *adapter)
2827 struct e1000_hw *hw = &adapter->hw;
2828 struct e1000_ring *rx_ring = adapter->rx_ring;
2830 u32 rdlen, rctl, rxcsum, ctrl_ext;
2832 if (adapter->rx_ps_pages) {
2833 /* this is a 32 byte descriptor */
2834 rdlen = rx_ring->count *
2835 sizeof(union e1000_rx_desc_packet_split);
2836 adapter->clean_rx = e1000_clean_rx_irq_ps;
2837 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
2838 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) {
2839 rdlen = rx_ring->count * sizeof(struct e1000_rx_desc);
2840 adapter->clean_rx = e1000_clean_jumbo_rx_irq;
2841 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
2843 rdlen = rx_ring->count * sizeof(struct e1000_rx_desc);
2844 adapter->clean_rx = e1000_clean_rx_irq;
2845 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
2848 /* disable receives while setting up the descriptors */
2850 ew32(RCTL, rctl & ~E1000_RCTL_EN);
2854 /* set the Receive Delay Timer Register */
2855 ew32(RDTR, adapter->rx_int_delay);
2857 /* irq moderation */
2858 ew32(RADV, adapter->rx_abs_int_delay);
2859 if (adapter->itr_setting != 0)
2860 ew32(ITR, 1000000000 / (adapter->itr * 256));
2862 ctrl_ext = er32(CTRL_EXT);
2863 /* Auto-Mask interrupts upon ICR access */
2864 ctrl_ext |= E1000_CTRL_EXT_IAME;
2865 ew32(IAM, 0xffffffff);
2866 ew32(CTRL_EXT, ctrl_ext);
2870 * Setup the HW Rx Head and Tail Descriptor Pointers and
2871 * the Base and Length of the Rx Descriptor Ring
2873 rdba = rx_ring->dma;
2874 ew32(RDBAL, (rdba & DMA_BIT_MASK(32)));
2875 ew32(RDBAH, (rdba >> 32));
2879 rx_ring->head = E1000_RDH;
2880 rx_ring->tail = E1000_RDT;
2882 /* Enable Receive Checksum Offload for TCP and UDP */
2883 rxcsum = er32(RXCSUM);
2884 if (adapter->flags & FLAG_RX_CSUM_ENABLED) {
2885 rxcsum |= E1000_RXCSUM_TUOFL;
2888 * IPv4 payload checksum for UDP fragments must be
2889 * used in conjunction with packet-split.
2891 if (adapter->rx_ps_pages)
2892 rxcsum |= E1000_RXCSUM_IPPCSE;
2894 rxcsum &= ~E1000_RXCSUM_TUOFL;
2895 /* no need to clear IPPCSE as it defaults to 0 */
2897 ew32(RXCSUM, rxcsum);
2900 * Enable early receives on supported devices, only takes effect when
2901 * packet size is equal or larger than the specified value (in 8 byte
2902 * units), e.g. using jumbo frames when setting to E1000_ERT_2048
2904 if (adapter->flags & FLAG_HAS_ERT) {
2905 if (adapter->netdev->mtu > ETH_DATA_LEN) {
2906 u32 rxdctl = er32(RXDCTL(0));
2907 ew32(RXDCTL(0), rxdctl | 0x3);
2908 ew32(ERT, E1000_ERT_2048 | (1 << 13));
2910 * With jumbo frames and early-receive enabled,
2911 * excessive C-state transition latencies result in
2912 * dropped transactions.
2914 pm_qos_update_request(
2915 adapter->netdev->pm_qos_req, 55);
2917 pm_qos_update_request(
2918 adapter->netdev->pm_qos_req,
2919 PM_QOS_DEFAULT_VALUE);
2923 /* Enable Receives */
2928 * e1000_update_mc_addr_list - Update Multicast addresses
2929 * @hw: pointer to the HW structure
2930 * @mc_addr_list: array of multicast addresses to program
2931 * @mc_addr_count: number of multicast addresses to program
2933 * Updates the Multicast Table Array.
2934 * The caller must have a packed mc_addr_list of multicast addresses.
2936 static void e1000_update_mc_addr_list(struct e1000_hw *hw, u8 *mc_addr_list,
2939 hw->mac.ops.update_mc_addr_list(hw, mc_addr_list, mc_addr_count);
2943 * e1000_set_multi - Multicast and Promiscuous mode set
2944 * @netdev: network interface device structure
2946 * The set_multi entry point is called whenever the multicast address
2947 * list or the network interface flags are updated. This routine is
2948 * responsible for configuring the hardware for proper multicast,
2949 * promiscuous mode, and all-multi behavior.
2951 static void e1000_set_multi(struct net_device *netdev)
2953 struct e1000_adapter *adapter = netdev_priv(netdev);
2954 struct e1000_hw *hw = &adapter->hw;
2955 struct netdev_hw_addr *ha;
2960 /* Check for Promiscuous and All Multicast modes */
2964 if (netdev->flags & IFF_PROMISC) {
2965 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
2966 rctl &= ~E1000_RCTL_VFE;
2968 if (netdev->flags & IFF_ALLMULTI) {
2969 rctl |= E1000_RCTL_MPE;
2970 rctl &= ~E1000_RCTL_UPE;
2972 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
2974 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
2975 rctl |= E1000_RCTL_VFE;
2980 if (!netdev_mc_empty(netdev)) {
2981 mta_list = kmalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC);
2985 /* prepare a packed array of only addresses. */
2987 netdev_for_each_mc_addr(ha, netdev)
2988 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN);
2990 e1000_update_mc_addr_list(hw, mta_list, i);
2994 * if we're called from probe, we might not have
2995 * anything to do here, so clear out the list
2997 e1000_update_mc_addr_list(hw, NULL, 0);
3002 * e1000_configure - configure the hardware for Rx and Tx
3003 * @adapter: private board structure
3005 static void e1000_configure(struct e1000_adapter *adapter)
3007 e1000_set_multi(adapter->netdev);
3009 e1000_restore_vlan(adapter);
3010 e1000_init_manageability_pt(adapter);
3012 e1000_configure_tx(adapter);
3013 e1000_setup_rctl(adapter);
3014 e1000_configure_rx(adapter);
3015 adapter->alloc_rx_buf(adapter, e1000_desc_unused(adapter->rx_ring));
3019 * e1000e_power_up_phy - restore link in case the phy was powered down
3020 * @adapter: address of board private structure
3022 * The phy may be powered down to save power and turn off link when the
3023 * driver is unloaded and wake on lan is not enabled (among others)
3024 * *** this routine MUST be followed by a call to e1000e_reset ***
3026 void e1000e_power_up_phy(struct e1000_adapter *adapter)
3028 if (adapter->hw.phy.ops.power_up)
3029 adapter->hw.phy.ops.power_up(&adapter->hw);
3031 adapter->hw.mac.ops.setup_link(&adapter->hw);
3035 * e1000_power_down_phy - Power down the PHY
3037 * Power down the PHY so no link is implied when interface is down.
3038 * The PHY cannot be powered down if management or WoL is active.
3040 static void e1000_power_down_phy(struct e1000_adapter *adapter)
3042 /* WoL is enabled */
3046 if (adapter->hw.phy.ops.power_down)
3047 adapter->hw.phy.ops.power_down(&adapter->hw);
3051 * e1000e_reset - bring the hardware into a known good state
3053 * This function boots the hardware and enables some settings that
3054 * require a configuration cycle of the hardware - those cannot be
3055 * set/changed during runtime. After reset the device needs to be
3056 * properly configured for Rx, Tx etc.
3058 void e1000e_reset(struct e1000_adapter *adapter)
3060 struct e1000_mac_info *mac = &adapter->hw.mac;
3061 struct e1000_fc_info *fc = &adapter->hw.fc;
3062 struct e1000_hw *hw = &adapter->hw;
3063 u32 tx_space, min_tx_space, min_rx_space;
3064 u32 pba = adapter->pba;
3067 /* reset Packet Buffer Allocation to default */
3070 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
3072 * To maintain wire speed transmits, the Tx FIFO should be
3073 * large enough to accommodate two full transmit packets,
3074 * rounded up to the next 1KB and expressed in KB. Likewise,
3075 * the Rx FIFO should be large enough to accommodate at least
3076 * one full receive packet and is similarly rounded up and
3080 /* upper 16 bits has Tx packet buffer allocation size in KB */
3081 tx_space = pba >> 16;
3082 /* lower 16 bits has Rx packet buffer allocation size in KB */
3085 * the Tx fifo also stores 16 bytes of information about the tx
3086 * but don't include ethernet FCS because hardware appends it
3088 min_tx_space = (adapter->max_frame_size +
3089 sizeof(struct e1000_tx_desc) -
3091 min_tx_space = ALIGN(min_tx_space, 1024);
3092 min_tx_space >>= 10;
3093 /* software strips receive CRC, so leave room for it */
3094 min_rx_space = adapter->max_frame_size;
3095 min_rx_space = ALIGN(min_rx_space, 1024);
3096 min_rx_space >>= 10;
3099 * If current Tx allocation is less than the min Tx FIFO size,
3100 * and the min Tx FIFO size is less than the current Rx FIFO
3101 * allocation, take space away from current Rx allocation
3103 if ((tx_space < min_tx_space) &&
3104 ((min_tx_space - tx_space) < pba)) {
3105 pba -= min_tx_space - tx_space;
3108 * if short on Rx space, Rx wins and must trump tx
3109 * adjustment or use Early Receive if available
3111 if ((pba < min_rx_space) &&
3112 (!(adapter->flags & FLAG_HAS_ERT)))
3113 /* ERT enabled in e1000_configure_rx */
3122 * flow control settings
3124 * The high water mark must be low enough to fit one full frame
3125 * (or the size used for early receive) above it in the Rx FIFO.
3126 * Set it to the lower of:
3127 * - 90% of the Rx FIFO size, and
3128 * - the full Rx FIFO size minus the early receive size (for parts
3129 * with ERT support assuming ERT set to E1000_ERT_2048), or
3130 * - the full Rx FIFO size minus one full frame
3132 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME)
3133 fc->pause_time = 0xFFFF;
3135 fc->pause_time = E1000_FC_PAUSE_TIME;
3137 fc->current_mode = fc->requested_mode;
3139 switch (hw->mac.type) {
3141 if ((adapter->flags & FLAG_HAS_ERT) &&
3142 (adapter->netdev->mtu > ETH_DATA_LEN))
3143 hwm = min(((pba << 10) * 9 / 10),
3144 ((pba << 10) - (E1000_ERT_2048 << 3)));
3146 hwm = min(((pba << 10) * 9 / 10),
3147 ((pba << 10) - adapter->max_frame_size));
3149 fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */
3150 fc->low_water = fc->high_water - 8;
3154 * Workaround PCH LOM adapter hangs with certain network
3155 * loads. If hangs persist, try disabling Tx flow control.
3157 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3158 fc->high_water = 0x3500;
3159 fc->low_water = 0x1500;
3161 fc->high_water = 0x5000;
3162 fc->low_water = 0x3000;
3164 fc->refresh_time = 0x1000;
3167 fc->high_water = 0x05C20;
3168 fc->low_water = 0x05048;
3169 fc->pause_time = 0x0650;
3170 fc->refresh_time = 0x0400;
3174 /* Allow time for pending master requests to run */
3175 mac->ops.reset_hw(hw);
3178 * For parts with AMT enabled, let the firmware know
3179 * that the network interface is in control
3181 if (adapter->flags & FLAG_HAS_AMT)
3182 e1000_get_hw_control(adapter);
3185 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP)
3186 e1e_wphy(&adapter->hw, BM_WUC, 0);
3188 if (mac->ops.init_hw(hw))
3189 e_err("Hardware Error\n");
3191 e1000_update_mng_vlan(adapter);
3193 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3194 ew32(VET, ETH_P_8021Q);
3196 e1000e_reset_adaptive(hw);
3197 e1000_get_phy_info(hw);
3199 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) &&
3200 !(adapter->flags & FLAG_SMART_POWER_DOWN)) {
3203 * speed up time to link by disabling smart power down, ignore
3204 * the return value of this function because there is nothing
3205 * different we would do if it failed
3207 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
3208 phy_data &= ~IGP02E1000_PM_SPD;
3209 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
3213 int e1000e_up(struct e1000_adapter *adapter)
3215 struct e1000_hw *hw = &adapter->hw;
3217 /* DMA latency requirement to workaround early-receive/jumbo issue */
3218 if (adapter->flags & FLAG_HAS_ERT)
3219 adapter->netdev->pm_qos_req =
3220 pm_qos_add_request(PM_QOS_CPU_DMA_LATENCY,
3221 PM_QOS_DEFAULT_VALUE);
3223 /* hardware has been reset, we need to reload some things */
3224 e1000_configure(adapter);
3226 clear_bit(__E1000_DOWN, &adapter->state);
3228 napi_enable(&adapter->napi);
3229 if (adapter->msix_entries)
3230 e1000_configure_msix(adapter);
3231 e1000_irq_enable(adapter);
3233 netif_wake_queue(adapter->netdev);
3235 /* fire a link change interrupt to start the watchdog */
3236 if (adapter->msix_entries)
3237 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
3239 ew32(ICS, E1000_ICS_LSC);
3244 void e1000e_down(struct e1000_adapter *adapter)
3246 struct net_device *netdev = adapter->netdev;
3247 struct e1000_hw *hw = &adapter->hw;
3251 * signal that we're down so the interrupt handler does not
3252 * reschedule our watchdog timer
3254 set_bit(__E1000_DOWN, &adapter->state);
3256 /* disable receives in the hardware */
3258 ew32(RCTL, rctl & ~E1000_RCTL_EN);
3259 /* flush and sleep below */
3261 netif_stop_queue(netdev);
3263 /* disable transmits in the hardware */
3265 tctl &= ~E1000_TCTL_EN;
3267 /* flush both disables and wait for them to finish */
3271 napi_disable(&adapter->napi);
3272 e1000_irq_disable(adapter);
3274 del_timer_sync(&adapter->watchdog_timer);
3275 del_timer_sync(&adapter->phy_info_timer);
3277 netif_carrier_off(netdev);
3278 adapter->link_speed = 0;
3279 adapter->link_duplex = 0;
3281 if (!pci_channel_offline(adapter->pdev))
3282 e1000e_reset(adapter);
3283 e1000_clean_tx_ring(adapter);
3284 e1000_clean_rx_ring(adapter);
3286 if (adapter->flags & FLAG_HAS_ERT) {
3287 pm_qos_remove_request(
3288 adapter->netdev->pm_qos_req);
3289 adapter->netdev->pm_qos_req = NULL;
3293 * TODO: for power management, we could drop the link and
3294 * pci_disable_device here.
3298 void e1000e_reinit_locked(struct e1000_adapter *adapter)
3301 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
3303 e1000e_down(adapter);
3305 clear_bit(__E1000_RESETTING, &adapter->state);
3309 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
3310 * @adapter: board private structure to initialize
3312 * e1000_sw_init initializes the Adapter private data structure.
3313 * Fields are initialized based on PCI device information and
3314 * OS network device settings (MTU size).
3316 static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
3318 struct net_device *netdev = adapter->netdev;
3320 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
3321 adapter->rx_ps_bsize0 = 128;
3322 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
3323 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
3325 e1000e_set_interrupt_capability(adapter);
3327 if (e1000_alloc_queues(adapter))
3330 /* Explicitly disable IRQ since the NIC can be in any state. */
3331 e1000_irq_disable(adapter);
3333 set_bit(__E1000_DOWN, &adapter->state);
3338 * e1000_intr_msi_test - Interrupt Handler
3339 * @irq: interrupt number
3340 * @data: pointer to a network interface device structure
3342 static irqreturn_t e1000_intr_msi_test(int irq, void *data)
3344 struct net_device *netdev = data;
3345 struct e1000_adapter *adapter = netdev_priv(netdev);
3346 struct e1000_hw *hw = &adapter->hw;
3347 u32 icr = er32(ICR);
3349 e_dbg("icr is %08X\n", icr);
3350 if (icr & E1000_ICR_RXSEQ) {
3351 adapter->flags &= ~FLAG_MSI_TEST_FAILED;
3359 * e1000_test_msi_interrupt - Returns 0 for successful test
3360 * @adapter: board private struct
3362 * code flow taken from tg3.c
3364 static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
3366 struct net_device *netdev = adapter->netdev;
3367 struct e1000_hw *hw = &adapter->hw;
3370 /* poll_enable hasn't been called yet, so don't need disable */
3371 /* clear any pending events */
3374 /* free the real vector and request a test handler */
3375 e1000_free_irq(adapter);
3376 e1000e_reset_interrupt_capability(adapter);
3378 /* Assume that the test fails, if it succeeds then the test
3379 * MSI irq handler will unset this flag */
3380 adapter->flags |= FLAG_MSI_TEST_FAILED;
3382 err = pci_enable_msi(adapter->pdev);
3384 goto msi_test_failed;
3386 err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0,
3387 netdev->name, netdev);
3389 pci_disable_msi(adapter->pdev);
3390 goto msi_test_failed;
3395 e1000_irq_enable(adapter);
3397 /* fire an unusual interrupt on the test handler */
3398 ew32(ICS, E1000_ICS_RXSEQ);
3402 e1000_irq_disable(adapter);
3406 if (adapter->flags & FLAG_MSI_TEST_FAILED) {
3407 adapter->int_mode = E1000E_INT_MODE_LEGACY;
3409 e_info("MSI interrupt test failed!\n");
3412 free_irq(adapter->pdev->irq, netdev);
3413 pci_disable_msi(adapter->pdev);
3416 goto msi_test_failed;
3418 /* okay so the test worked, restore settings */
3419 e_dbg("MSI interrupt test succeeded!\n");
3421 e1000e_set_interrupt_capability(adapter);
3422 e1000_request_irq(adapter);
3427 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3428 * @adapter: board private struct
3430 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3432 static int e1000_test_msi(struct e1000_adapter *adapter)
3437 if (!(adapter->flags & FLAG_MSI_ENABLED))
3440 /* disable SERR in case the MSI write causes a master abort */
3441 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
3442 pci_write_config_word(adapter->pdev, PCI_COMMAND,
3443 pci_cmd & ~PCI_COMMAND_SERR);
3445 err = e1000_test_msi_interrupt(adapter);
3447 /* restore previous setting of command word */
3448 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);
3454 /* EIO means MSI test failed */
3458 /* back to INTx mode */
3459 e_warn("MSI interrupt test failed, using legacy interrupt.\n");
3461 e1000_free_irq(adapter);
3463 err = e1000_request_irq(adapter);
3469 * e1000_open - Called when a network interface is made active
3470 * @netdev: network interface device structure
3472 * Returns 0 on success, negative value on failure
3474 * The open entry point is called when a network interface is made
3475 * active by the system (IFF_UP). At this point all resources needed
3476 * for transmit and receive operations are allocated, the interrupt
3477 * handler is registered with the OS, the watchdog timer is started,
3478 * and the stack is notified that the interface is ready.
3480 static int e1000_open(struct net_device *netdev)
3482 struct e1000_adapter *adapter = netdev_priv(netdev);
3483 struct e1000_hw *hw = &adapter->hw;
3484 struct pci_dev *pdev = adapter->pdev;
3487 /* disallow open during test */
3488 if (test_bit(__E1000_TESTING, &adapter->state))
3491 pm_runtime_get_sync(&pdev->dev);
3493 netif_carrier_off(netdev);
3495 /* allocate transmit descriptors */
3496 err = e1000e_setup_tx_resources(adapter);
3500 /* allocate receive descriptors */
3501 err = e1000e_setup_rx_resources(adapter);
3506 * If AMT is enabled, let the firmware know that the network
3507 * interface is now open and reset the part to a known state.
3509 if (adapter->flags & FLAG_HAS_AMT) {
3510 e1000_get_hw_control(adapter);
3511 e1000e_reset(adapter);
3514 e1000e_power_up_phy(adapter);
3516 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
3517 if ((adapter->hw.mng_cookie.status &
3518 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
3519 e1000_update_mng_vlan(adapter);
3522 * before we allocate an interrupt, we must be ready to handle it.
3523 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3524 * as soon as we call pci_request_irq, so we have to setup our
3525 * clean_rx handler before we do so.
3527 e1000_configure(adapter);
3529 err = e1000_request_irq(adapter);
3534 * Work around PCIe errata with MSI interrupts causing some chipsets to
3535 * ignore e1000e MSI messages, which means we need to test our MSI
3538 if (adapter->int_mode != E1000E_INT_MODE_LEGACY) {
3539 err = e1000_test_msi(adapter);
3541 e_err("Interrupt allocation failed\n");
3546 /* From here on the code is the same as e1000e_up() */
3547 clear_bit(__E1000_DOWN, &adapter->state);
3549 napi_enable(&adapter->napi);
3551 e1000_irq_enable(adapter);
3553 netif_start_queue(netdev);
3555 adapter->idle_check = true;
3556 pm_runtime_put(&pdev->dev);
3558 /* fire a link status change interrupt to start the watchdog */
3559 if (adapter->msix_entries)
3560 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
3562 ew32(ICS, E1000_ICS_LSC);
3567 e1000_release_hw_control(adapter);
3568 e1000_power_down_phy(adapter);
3569 e1000e_free_rx_resources(adapter);
3571 e1000e_free_tx_resources(adapter);
3573 e1000e_reset(adapter);
3574 pm_runtime_put_sync(&pdev->dev);
3580 * e1000_close - Disables a network interface
3581 * @netdev: network interface device structure
3583 * Returns 0, this is not allowed to fail
3585 * The close entry point is called when an interface is de-activated
3586 * by the OS. The hardware is still under the drivers control, but
3587 * needs to be disabled. A global MAC reset is issued to stop the
3588 * hardware, and all transmit and receive resources are freed.
3590 static int e1000_close(struct net_device *netdev)
3592 struct e1000_adapter *adapter = netdev_priv(netdev);
3593 struct pci_dev *pdev = adapter->pdev;
3595 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
3597 pm_runtime_get_sync(&pdev->dev);
3599 if (!test_bit(__E1000_DOWN, &adapter->state)) {
3600 e1000e_down(adapter);
3601 e1000_free_irq(adapter);
3603 e1000_power_down_phy(adapter);
3605 e1000e_free_tx_resources(adapter);
3606 e1000e_free_rx_resources(adapter);
3609 * kill manageability vlan ID if supported, but not if a vlan with
3610 * the same ID is registered on the host OS (let 8021q kill it)
3612 if ((adapter->hw.mng_cookie.status &
3613 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
3615 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id)))
3616 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
3619 * If AMT is enabled, let the firmware know that the network
3620 * interface is now closed
3622 if (adapter->flags & FLAG_HAS_AMT)
3623 e1000_release_hw_control(adapter);
3625 pm_runtime_put_sync(&pdev->dev);
3630 * e1000_set_mac - Change the Ethernet Address of the NIC
3631 * @netdev: network interface device structure
3632 * @p: pointer to an address structure
3634 * Returns 0 on success, negative on failure
3636 static int e1000_set_mac(struct net_device *netdev, void *p)
3638 struct e1000_adapter *adapter = netdev_priv(netdev);
3639 struct sockaddr *addr = p;
3641 if (!is_valid_ether_addr(addr->sa_data))
3642 return -EADDRNOTAVAIL;
3644 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
3645 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
3647 e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
3649 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) {
3650 /* activate the work around */
3651 e1000e_set_laa_state_82571(&adapter->hw, 1);
3654 * Hold a copy of the LAA in RAR[14] This is done so that
3655 * between the time RAR[0] gets clobbered and the time it
3656 * gets fixed (in e1000_watchdog), the actual LAA is in one
3657 * of the RARs and no incoming packets directed to this port
3658 * are dropped. Eventually the LAA will be in RAR[0] and
3661 e1000e_rar_set(&adapter->hw,
3662 adapter->hw.mac.addr,
3663 adapter->hw.mac.rar_entry_count - 1);
3670 * e1000e_update_phy_task - work thread to update phy
3671 * @work: pointer to our work struct
3673 * this worker thread exists because we must acquire a
3674 * semaphore to read the phy, which we could msleep while
3675 * waiting for it, and we can't msleep in a timer.
3677 static void e1000e_update_phy_task(struct work_struct *work)
3679 struct e1000_adapter *adapter = container_of(work,
3680 struct e1000_adapter, update_phy_task);
3681 e1000_get_phy_info(&adapter->hw);
3685 * Need to wait a few seconds after link up to get diagnostic information from
3688 static void e1000_update_phy_info(unsigned long data)
3690 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
3691 schedule_work(&adapter->update_phy_task);
3695 * e1000e_update_phy_stats - Update the PHY statistics counters
3696 * @adapter: board private structure
3698 static void e1000e_update_phy_stats(struct e1000_adapter *adapter)
3700 struct e1000_hw *hw = &adapter->hw;
3704 ret_val = hw->phy.ops.acquire(hw);
3710 #define HV_PHY_STATS_PAGE 778
3712 * A page set is expensive so check if already on desired page.
3713 * If not, set to the page with the PHY status registers.
3715 ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
3719 if (phy_data != (HV_PHY_STATS_PAGE << IGP_PAGE_SHIFT)) {
3720 ret_val = e1000e_write_phy_reg_mdic(hw,
3721 IGP01E1000_PHY_PAGE_SELECT,
3722 (HV_PHY_STATS_PAGE <<
3728 /* Read/clear the upper 16-bit registers and read/accumulate lower */
3730 /* Single Collision Count */
3731 e1000e_read_phy_reg_mdic(hw, HV_SCC_UPPER & MAX_PHY_REG_ADDRESS,
3733 ret_val = e1000e_read_phy_reg_mdic(hw,
3734 HV_SCC_LOWER & MAX_PHY_REG_ADDRESS,
3737 adapter->stats.scc += phy_data;
3739 /* Excessive Collision Count */
3740 e1000e_read_phy_reg_mdic(hw, HV_ECOL_UPPER & MAX_PHY_REG_ADDRESS,
3742 ret_val = e1000e_read_phy_reg_mdic(hw,
3743 HV_ECOL_LOWER & MAX_PHY_REG_ADDRESS,
3746 adapter->stats.ecol += phy_data;
3748 /* Multiple Collision Count */
3749 e1000e_read_phy_reg_mdic(hw, HV_MCC_UPPER & MAX_PHY_REG_ADDRESS,
3751 ret_val = e1000e_read_phy_reg_mdic(hw,
3752 HV_MCC_LOWER & MAX_PHY_REG_ADDRESS,
3755 adapter->stats.mcc += phy_data;
3757 /* Late Collision Count */
3758 e1000e_read_phy_reg_mdic(hw, HV_LATECOL_UPPER & MAX_PHY_REG_ADDRESS,
3760 ret_val = e1000e_read_phy_reg_mdic(hw,
3762 MAX_PHY_REG_ADDRESS,
3765 adapter->stats.latecol += phy_data;
3767 /* Collision Count - also used for adaptive IFS */
3768 e1000e_read_phy_reg_mdic(hw, HV_COLC_UPPER & MAX_PHY_REG_ADDRESS,
3770 ret_val = e1000e_read_phy_reg_mdic(hw,
3771 HV_COLC_LOWER & MAX_PHY_REG_ADDRESS,
3774 hw->mac.collision_delta = phy_data;
3777 e1000e_read_phy_reg_mdic(hw, HV_DC_UPPER & MAX_PHY_REG_ADDRESS,
3779 ret_val = e1000e_read_phy_reg_mdic(hw,
3780 HV_DC_LOWER & MAX_PHY_REG_ADDRESS,
3783 adapter->stats.dc += phy_data;
3785 /* Transmit with no CRS */
3786 e1000e_read_phy_reg_mdic(hw, HV_TNCRS_UPPER & MAX_PHY_REG_ADDRESS,
3788 ret_val = e1000e_read_phy_reg_mdic(hw,
3789 HV_TNCRS_LOWER & MAX_PHY_REG_ADDRESS,
3792 adapter->stats.tncrs += phy_data;
3795 hw->phy.ops.release(hw);
3799 * e1000e_update_stats - Update the board statistics counters
3800 * @adapter: board private structure
3802 void e1000e_update_stats(struct e1000_adapter *adapter)
3804 struct net_device *netdev = adapter->netdev;
3805 struct e1000_hw *hw = &adapter->hw;
3806 struct pci_dev *pdev = adapter->pdev;
3809 * Prevent stats update while adapter is being reset, or if the pci
3810 * connection is down.
3812 if (adapter->link_speed == 0)
3814 if (pci_channel_offline(pdev))
3817 adapter->stats.crcerrs += er32(CRCERRS);
3818 adapter->stats.gprc += er32(GPRC);
3819 adapter->stats.gorc += er32(GORCL);
3820 er32(GORCH); /* Clear gorc */
3821 adapter->stats.bprc += er32(BPRC);
3822 adapter->stats.mprc += er32(MPRC);
3823 adapter->stats.roc += er32(ROC);
3825 adapter->stats.mpc += er32(MPC);
3827 /* Half-duplex statistics */
3828 if (adapter->link_duplex == HALF_DUPLEX) {
3829 if (adapter->flags2 & FLAG2_HAS_PHY_STATS) {
3830 e1000e_update_phy_stats(adapter);
3832 adapter->stats.scc += er32(SCC);
3833 adapter->stats.ecol += er32(ECOL);
3834 adapter->stats.mcc += er32(MCC);
3835 adapter->stats.latecol += er32(LATECOL);
3836 adapter->stats.dc += er32(DC);
3838 hw->mac.collision_delta = er32(COLC);
3840 if ((hw->mac.type != e1000_82574) &&
3841 (hw->mac.type != e1000_82583))
3842 adapter->stats.tncrs += er32(TNCRS);
3844 adapter->stats.colc += hw->mac.collision_delta;
3847 adapter->stats.xonrxc += er32(XONRXC);
3848 adapter->stats.xontxc += er32(XONTXC);
3849 adapter->stats.xoffrxc += er32(XOFFRXC);
3850 adapter->stats.xofftxc += er32(XOFFTXC);
3851 adapter->stats.gptc += er32(GPTC);
3852 adapter->stats.gotc += er32(GOTCL);
3853 er32(GOTCH); /* Clear gotc */
3854 adapter->stats.rnbc += er32(RNBC);
3855 adapter->stats.ruc += er32(RUC);
3857 adapter->stats.mptc += er32(MPTC);
3858 adapter->stats.bptc += er32(BPTC);
3860 /* used for adaptive IFS */
3862 hw->mac.tx_packet_delta = er32(TPT);
3863 adapter->stats.tpt += hw->mac.tx_packet_delta;
3865 adapter->stats.algnerrc += er32(ALGNERRC);
3866 adapter->stats.rxerrc += er32(RXERRC);
3867 adapter->stats.cexterr += er32(CEXTERR);
3868 adapter->stats.tsctc += er32(TSCTC);
3869 adapter->stats.tsctfc += er32(TSCTFC);
3871 /* Fill out the OS statistics structure */
3872 netdev->stats.multicast = adapter->stats.mprc;
3873 netdev->stats.collisions = adapter->stats.colc;
3878 * RLEC on some newer hardware can be incorrect so build
3879 * our own version based on RUC and ROC
3881 netdev->stats.rx_errors = adapter->stats.rxerrc +
3882 adapter->stats.crcerrs + adapter->stats.algnerrc +
3883 adapter->stats.ruc + adapter->stats.roc +
3884 adapter->stats.cexterr;
3885 netdev->stats.rx_length_errors = adapter->stats.ruc +
3887 netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
3888 netdev->stats.rx_frame_errors = adapter->stats.algnerrc;
3889 netdev->stats.rx_missed_errors = adapter->stats.mpc;
3892 netdev->stats.tx_errors = adapter->stats.ecol +
3893 adapter->stats.latecol;
3894 netdev->stats.tx_aborted_errors = adapter->stats.ecol;
3895 netdev->stats.tx_window_errors = adapter->stats.latecol;
3896 netdev->stats.tx_carrier_errors = adapter->stats.tncrs;
3898 /* Tx Dropped needs to be maintained elsewhere */
3900 /* Management Stats */
3901 adapter->stats.mgptc += er32(MGTPTC);
3902 adapter->stats.mgprc += er32(MGTPRC);
3903 adapter->stats.mgpdc += er32(MGTPDC);
3907 * e1000_phy_read_status - Update the PHY register status snapshot
3908 * @adapter: board private structure
3910 static void e1000_phy_read_status(struct e1000_adapter *adapter)
3912 struct e1000_hw *hw = &adapter->hw;
3913 struct e1000_phy_regs *phy = &adapter->phy_regs;
3916 if ((er32(STATUS) & E1000_STATUS_LU) &&
3917 (adapter->hw.phy.media_type == e1000_media_type_copper)) {
3918 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr);
3919 ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr);
3920 ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise);
3921 ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa);
3922 ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion);
3923 ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000);
3924 ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000);
3925 ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus);
3927 e_warn("Error reading PHY register\n");
3930 * Do not read PHY registers if link is not up
3931 * Set values to typical power-on defaults
3933 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX);
3934 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL |
3935 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE |
3937 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP |
3938 ADVERTISE_ALL | ADVERTISE_CSMA);
3940 phy->expansion = EXPANSION_ENABLENPAGE;
3941 phy->ctrl1000 = ADVERTISE_1000FULL;
3943 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF);
3947 static void e1000_print_link_info(struct e1000_adapter *adapter)
3949 struct e1000_hw *hw = &adapter->hw;
3950 u32 ctrl = er32(CTRL);
3952 /* Link status message must follow this format for user tools */
3953 printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s, "
3954 "Flow Control: %s\n",
3955 adapter->netdev->name,
3956 adapter->link_speed,
3957 (adapter->link_duplex == FULL_DUPLEX) ?
3958 "Full Duplex" : "Half Duplex",
3959 ((ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE)) ?
3961 ((ctrl & E1000_CTRL_RFCE) ? "RX" :
3962 ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None" )));
3965 bool e1000e_has_link(struct e1000_adapter *adapter)
3967 struct e1000_hw *hw = &adapter->hw;
3968 bool link_active = 0;
3972 * get_link_status is set on LSC (link status) interrupt or
3973 * Rx sequence error interrupt. get_link_status will stay
3974 * false until the check_for_link establishes link
3975 * for copper adapters ONLY
3977 switch (hw->phy.media_type) {
3978 case e1000_media_type_copper:
3979 if (hw->mac.get_link_status) {
3980 ret_val = hw->mac.ops.check_for_link(hw);
3981 link_active = !hw->mac.get_link_status;
3986 case e1000_media_type_fiber:
3987 ret_val = hw->mac.ops.check_for_link(hw);
3988 link_active = !!(er32(STATUS) & E1000_STATUS_LU);
3990 case e1000_media_type_internal_serdes:
3991 ret_val = hw->mac.ops.check_for_link(hw);
3992 link_active = adapter->hw.mac.serdes_has_link;
3995 case e1000_media_type_unknown:
3999 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) &&
4000 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
4001 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
4002 e_info("Gigabit has been disabled, downgrading speed\n");
4008 static void e1000e_enable_receives(struct e1000_adapter *adapter)
4010 /* make sure the receive unit is started */
4011 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
4012 (adapter->flags & FLAG_RX_RESTART_NOW)) {
4013 struct e1000_hw *hw = &adapter->hw;
4014 u32 rctl = er32(RCTL);
4015 ew32(RCTL, rctl | E1000_RCTL_EN);
4016 adapter->flags &= ~FLAG_RX_RESTART_NOW;
4021 * e1000_watchdog - Timer Call-back
4022 * @data: pointer to adapter cast into an unsigned long
4024 static void e1000_watchdog(unsigned long data)
4026 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
4028 /* Do the rest outside of interrupt context */
4029 schedule_work(&adapter->watchdog_task);
4031 /* TODO: make this use queue_delayed_work() */
4034 static void e1000_watchdog_task(struct work_struct *work)
4036 struct e1000_adapter *adapter = container_of(work,
4037 struct e1000_adapter, watchdog_task);
4038 struct net_device *netdev = adapter->netdev;
4039 struct e1000_mac_info *mac = &adapter->hw.mac;
4040 struct e1000_phy_info *phy = &adapter->hw.phy;
4041 struct e1000_ring *tx_ring = adapter->tx_ring;
4042 struct e1000_hw *hw = &adapter->hw;
4046 link = e1000e_has_link(adapter);
4047 if ((netif_carrier_ok(netdev)) && link) {
4048 /* Cancel scheduled suspend requests. */
4049 pm_runtime_resume(netdev->dev.parent);
4051 e1000e_enable_receives(adapter);
4055 if ((e1000e_enable_tx_pkt_filtering(hw)) &&
4056 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id))
4057 e1000_update_mng_vlan(adapter);
4060 if (!netif_carrier_ok(netdev)) {
4063 /* Cancel scheduled suspend requests. */
4064 pm_runtime_resume(netdev->dev.parent);
4066 /* update snapshot of PHY registers on LSC */
4067 e1000_phy_read_status(adapter);
4068 mac->ops.get_link_up_info(&adapter->hw,
4069 &adapter->link_speed,
4070 &adapter->link_duplex);
4071 e1000_print_link_info(adapter);
4073 * On supported PHYs, check for duplex mismatch only
4074 * if link has autonegotiated at 10/100 half
4076 if ((hw->phy.type == e1000_phy_igp_3 ||
4077 hw->phy.type == e1000_phy_bm) &&
4078 (hw->mac.autoneg == true) &&
4079 (adapter->link_speed == SPEED_10 ||
4080 adapter->link_speed == SPEED_100) &&
4081 (adapter->link_duplex == HALF_DUPLEX)) {
4084 e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp);
4086 if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS))
4087 e_info("Autonegotiated half duplex but"
4088 " link partner cannot autoneg. "
4089 " Try forcing full duplex if "
4090 "link gets many collisions.\n");
4093 /* adjust timeout factor according to speed/duplex */
4094 adapter->tx_timeout_factor = 1;
4095 switch (adapter->link_speed) {
4098 adapter->tx_timeout_factor = 16;
4102 adapter->tx_timeout_factor = 10;
4107 * workaround: re-program speed mode bit after
4110 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) &&
4113 tarc0 = er32(TARC(0));
4114 tarc0 &= ~SPEED_MODE_BIT;
4115 ew32(TARC(0), tarc0);
4119 * disable TSO for pcie and 10/100 speeds, to avoid
4120 * some hardware issues
4122 if (!(adapter->flags & FLAG_TSO_FORCE)) {
4123 switch (adapter->link_speed) {
4126 e_info("10/100 speed: disabling TSO\n");
4127 netdev->features &= ~NETIF_F_TSO;
4128 netdev->features &= ~NETIF_F_TSO6;
4131 netdev->features |= NETIF_F_TSO;
4132 netdev->features |= NETIF_F_TSO6;
4141 * enable transmits in the hardware, need to do this
4142 * after setting TARC(0)
4145 tctl |= E1000_TCTL_EN;
4149 * Perform any post-link-up configuration before
4150 * reporting link up.
4152 if (phy->ops.cfg_on_link_up)
4153 phy->ops.cfg_on_link_up(hw);
4155 netif_carrier_on(netdev);
4157 if (!test_bit(__E1000_DOWN, &adapter->state))
4158 mod_timer(&adapter->phy_info_timer,
4159 round_jiffies(jiffies + 2 * HZ));
4162 if (netif_carrier_ok(netdev)) {
4163 adapter->link_speed = 0;
4164 adapter->link_duplex = 0;
4165 /* Link status message must follow this format */
4166 printk(KERN_INFO "e1000e: %s NIC Link is Down\n",
4167 adapter->netdev->name);
4168 netif_carrier_off(netdev);
4169 if (!test_bit(__E1000_DOWN, &adapter->state))
4170 mod_timer(&adapter->phy_info_timer,
4171 round_jiffies(jiffies + 2 * HZ));
4173 if (adapter->flags & FLAG_RX_NEEDS_RESTART)
4174 schedule_work(&adapter->reset_task);
4176 pm_schedule_suspend(netdev->dev.parent,
4182 e1000e_update_stats(adapter);
4184 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
4185 adapter->tpt_old = adapter->stats.tpt;
4186 mac->collision_delta = adapter->stats.colc - adapter->colc_old;
4187 adapter->colc_old = adapter->stats.colc;
4189 adapter->gorc = adapter->stats.gorc - adapter->gorc_old;
4190 adapter->gorc_old = adapter->stats.gorc;
4191 adapter->gotc = adapter->stats.gotc - adapter->gotc_old;
4192 adapter->gotc_old = adapter->stats.gotc;
4194 e1000e_update_adaptive(&adapter->hw);
4196 if (!netif_carrier_ok(netdev)) {
4197 tx_pending = (e1000_desc_unused(tx_ring) + 1 <
4201 * We've lost link, so the controller stops DMA,
4202 * but we've got queued Tx work that's never going
4203 * to get done, so reset controller to flush Tx.
4204 * (Do the reset outside of interrupt context).
4206 adapter->tx_timeout_count++;
4207 schedule_work(&adapter->reset_task);
4208 /* return immediately since reset is imminent */
4213 /* Simple mode for Interrupt Throttle Rate (ITR) */
4214 if (adapter->itr_setting == 4) {
4216 * Symmetric Tx/Rx gets a reduced ITR=2000;
4217 * Total asymmetrical Tx or Rx gets ITR=8000;
4218 * everyone else is between 2000-8000.
4220 u32 goc = (adapter->gotc + adapter->gorc) / 10000;
4221 u32 dif = (adapter->gotc > adapter->gorc ?
4222 adapter->gotc - adapter->gorc :
4223 adapter->gorc - adapter->gotc) / 10000;
4224 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
4226 ew32(ITR, 1000000000 / (itr * 256));
4229 /* Cause software interrupt to ensure Rx ring is cleaned */
4230 if (adapter->msix_entries)
4231 ew32(ICS, adapter->rx_ring->ims_val);
4233 ew32(ICS, E1000_ICS_RXDMT0);
4235 /* Force detection of hung controller every watchdog period */
4236 adapter->detect_tx_hung = 1;
4239 * With 82571 controllers, LAA may be overwritten due to controller
4240 * reset from the other port. Set the appropriate LAA in RAR[0]
4242 if (e1000e_get_laa_state_82571(hw))
4243 e1000e_rar_set(hw, adapter->hw.mac.addr, 0);
4245 /* Reset the timer */
4246 if (!test_bit(__E1000_DOWN, &adapter->state))
4247 mod_timer(&adapter->watchdog_timer,
4248 round_jiffies(jiffies + 2 * HZ));
4251 #define E1000_TX_FLAGS_CSUM 0x00000001
4252 #define E1000_TX_FLAGS_VLAN 0x00000002
4253 #define E1000_TX_FLAGS_TSO 0x00000004
4254 #define E1000_TX_FLAGS_IPV4 0x00000008
4255 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
4256 #define E1000_TX_FLAGS_VLAN_SHIFT 16
4258 static int e1000_tso(struct e1000_adapter *adapter,
4259 struct sk_buff *skb)
4261 struct e1000_ring *tx_ring = adapter->tx_ring;
4262 struct e1000_context_desc *context_desc;
4263 struct e1000_buffer *buffer_info;
4266 u16 ipcse = 0, tucse, mss;
4267 u8 ipcss, ipcso, tucss, tucso, hdr_len;
4270 if (!skb_is_gso(skb))
4273 if (skb_header_cloned(skb)) {
4274 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
4279 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4280 mss = skb_shinfo(skb)->gso_size;
4281 if (skb->protocol == htons(ETH_P_IP)) {
4282 struct iphdr *iph = ip_hdr(skb);
4285 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
4287 cmd_length = E1000_TXD_CMD_IP;
4288 ipcse = skb_transport_offset(skb) - 1;
4289 } else if (skb_is_gso_v6(skb)) {
4290 ipv6_hdr(skb)->payload_len = 0;
4291 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
4292 &ipv6_hdr(skb)->daddr,
4296 ipcss = skb_network_offset(skb);
4297 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
4298 tucss = skb_transport_offset(skb);
4299 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
4302 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
4303 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
4305 i = tx_ring->next_to_use;
4306 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
4307 buffer_info = &tx_ring->buffer_info[i];
4309 context_desc->lower_setup.ip_fields.ipcss = ipcss;
4310 context_desc->lower_setup.ip_fields.ipcso = ipcso;
4311 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
4312 context_desc->upper_setup.tcp_fields.tucss = tucss;
4313 context_desc->upper_setup.tcp_fields.tucso = tucso;
4314 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
4315 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
4316 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
4317 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
4319 buffer_info->time_stamp = jiffies;
4320 buffer_info->next_to_watch = i;
4323 if (i == tx_ring->count)
4325 tx_ring->next_to_use = i;
4330 static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb)
4332 struct e1000_ring *tx_ring = adapter->tx_ring;
4333 struct e1000_context_desc *context_desc;
4334 struct e1000_buffer *buffer_info;
4337 u32 cmd_len = E1000_TXD_CMD_DEXT;
4340 if (skb->ip_summed != CHECKSUM_PARTIAL)
4343 if (skb->protocol == cpu_to_be16(ETH_P_8021Q))
4344 protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto;
4346 protocol = skb->protocol;
4349 case cpu_to_be16(ETH_P_IP):
4350 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
4351 cmd_len |= E1000_TXD_CMD_TCP;
4353 case cpu_to_be16(ETH_P_IPV6):
4354 /* XXX not handling all IPV6 headers */
4355 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
4356 cmd_len |= E1000_TXD_CMD_TCP;
4359 if (unlikely(net_ratelimit()))
4360 e_warn("checksum_partial proto=%x!\n",
4361 be16_to_cpu(protocol));
4365 css = skb_transport_offset(skb);
4367 i = tx_ring->next_to_use;
4368 buffer_info = &tx_ring->buffer_info[i];
4369 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
4371 context_desc->lower_setup.ip_config = 0;
4372 context_desc->upper_setup.tcp_fields.tucss = css;
4373 context_desc->upper_setup.tcp_fields.tucso =
4374 css + skb->csum_offset;
4375 context_desc->upper_setup.tcp_fields.tucse = 0;
4376 context_desc->tcp_seg_setup.data = 0;
4377 context_desc->cmd_and_length = cpu_to_le32(cmd_len);
4379 buffer_info->time_stamp = jiffies;
4380 buffer_info->next_to_watch = i;
4383 if (i == tx_ring->count)
4385 tx_ring->next_to_use = i;
4390 #define E1000_MAX_PER_TXD 8192
4391 #define E1000_MAX_TXD_PWR 12
4393 static int e1000_tx_map(struct e1000_adapter *adapter,
4394 struct sk_buff *skb, unsigned int first,
4395 unsigned int max_per_txd, unsigned int nr_frags,
4398 struct e1000_ring *tx_ring = adapter->tx_ring;
4399 struct pci_dev *pdev = adapter->pdev;
4400 struct e1000_buffer *buffer_info;
4401 unsigned int len = skb_headlen(skb);
4402 unsigned int offset = 0, size, count = 0, i;
4403 unsigned int f, bytecount, segs;
4405 i = tx_ring->next_to_use;
4408 buffer_info = &tx_ring->buffer_info[i];
4409 size = min(len, max_per_txd);
4411 buffer_info->length = size;
4412 buffer_info->time_stamp = jiffies;
4413 buffer_info->next_to_watch = i;
4414 buffer_info->dma = dma_map_single(&pdev->dev,
4416 size, DMA_TO_DEVICE);
4417 buffer_info->mapped_as_page = false;
4418 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
4427 if (i == tx_ring->count)
4432 for (f = 0; f < nr_frags; f++) {
4433 struct skb_frag_struct *frag;
4435 frag = &skb_shinfo(skb)->frags[f];
4437 offset = frag->page_offset;
4441 if (i == tx_ring->count)
4444 buffer_info = &tx_ring->buffer_info[i];
4445 size = min(len, max_per_txd);
4447 buffer_info->length = size;
4448 buffer_info->time_stamp = jiffies;
4449 buffer_info->next_to_watch = i;
4450 buffer_info->dma = dma_map_page(&pdev->dev, frag->page,
4453 buffer_info->mapped_as_page = true;
4454 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
4463 segs = skb_shinfo(skb)->gso_segs ?: 1;
4464 /* multiply data chunks by size of headers */
4465 bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len;
4467 tx_ring->buffer_info[i].skb = skb;
4468 tx_ring->buffer_info[i].segs = segs;
4469 tx_ring->buffer_info[i].bytecount = bytecount;
4470 tx_ring->buffer_info[first].next_to_watch = i;
4475 dev_err(&pdev->dev, "TX DMA map failed\n");
4476 buffer_info->dma = 0;
4482 i += tx_ring->count;
4484 buffer_info = &tx_ring->buffer_info[i];
4485 e1000_put_txbuf(adapter, buffer_info);;
4491 static void e1000_tx_queue(struct e1000_adapter *adapter,
4492 int tx_flags, int count)
4494 struct e1000_ring *tx_ring = adapter->tx_ring;
4495 struct e1000_tx_desc *tx_desc = NULL;
4496 struct e1000_buffer *buffer_info;
4497 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
4500 if (tx_flags & E1000_TX_FLAGS_TSO) {
4501 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
4503 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
4505 if (tx_flags & E1000_TX_FLAGS_IPV4)
4506 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
4509 if (tx_flags & E1000_TX_FLAGS_CSUM) {
4510 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
4511 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
4514 if (tx_flags & E1000_TX_FLAGS_VLAN) {
4515 txd_lower |= E1000_TXD_CMD_VLE;
4516 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
4519 i = tx_ring->next_to_use;
4522 buffer_info = &tx_ring->buffer_info[i];
4523 tx_desc = E1000_TX_DESC(*tx_ring, i);
4524 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
4525 tx_desc->lower.data =
4526 cpu_to_le32(txd_lower | buffer_info->length);
4527 tx_desc->upper.data = cpu_to_le32(txd_upper);
4530 if (i == tx_ring->count)
4534 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
4537 * Force memory writes to complete before letting h/w
4538 * know there are new descriptors to fetch. (Only
4539 * applicable for weak-ordered memory model archs,
4544 tx_ring->next_to_use = i;
4545 writel(i, adapter->hw.hw_addr + tx_ring->tail);
4547 * we need this if more than one processor can write to our tail
4548 * at a time, it synchronizes IO on IA64/Altix systems
4553 #define MINIMUM_DHCP_PACKET_SIZE 282
4554 static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
4555 struct sk_buff *skb)
4557 struct e1000_hw *hw = &adapter->hw;
4560 if (vlan_tx_tag_present(skb)) {
4561 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) &&
4562 (adapter->hw.mng_cookie.status &
4563 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
4567 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE)
4570 if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP))
4574 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14);
4577 if (ip->protocol != IPPROTO_UDP)
4580 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
4581 if (ntohs(udp->dest) != 67)
4584 offset = (u8 *)udp + 8 - skb->data;
4585 length = skb->len - offset;
4586 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length);
4592 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
4594 struct e1000_adapter *adapter = netdev_priv(netdev);
4596 netif_stop_queue(netdev);
4598 * Herbert's original patch had:
4599 * smp_mb__after_netif_stop_queue();
4600 * but since that doesn't exist yet, just open code it.
4605 * We need to check again in a case another CPU has just
4606 * made room available.
4608 if (e1000_desc_unused(adapter->tx_ring) < size)
4612 netif_start_queue(netdev);
4613 ++adapter->restart_queue;
4617 static int e1000_maybe_stop_tx(struct net_device *netdev, int size)
4619 struct e1000_adapter *adapter = netdev_priv(netdev);
4621 if (e1000_desc_unused(adapter->tx_ring) >= size)
4623 return __e1000_maybe_stop_tx(netdev, size);
4626 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
4627 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
4628 struct net_device *netdev)
4630 struct e1000_adapter *adapter = netdev_priv(netdev);
4631 struct e1000_ring *tx_ring = adapter->tx_ring;
4633 unsigned int max_per_txd = E1000_MAX_PER_TXD;
4634 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
4635 unsigned int tx_flags = 0;
4636 unsigned int len = skb_headlen(skb);
4637 unsigned int nr_frags;
4643 if (test_bit(__E1000_DOWN, &adapter->state)) {
4644 dev_kfree_skb_any(skb);
4645 return NETDEV_TX_OK;
4648 if (skb->len <= 0) {
4649 dev_kfree_skb_any(skb);
4650 return NETDEV_TX_OK;
4653 mss = skb_shinfo(skb)->gso_size;
4655 * The controller does a simple calculation to
4656 * make sure there is enough room in the FIFO before
4657 * initiating the DMA for each buffer. The calc is:
4658 * 4 = ceil(buffer len/mss). To make sure we don't
4659 * overrun the FIFO, adjust the max buffer len if mss
4664 max_per_txd = min(mss << 2, max_per_txd);
4665 max_txd_pwr = fls(max_per_txd) - 1;
4668 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
4669 * points to just header, pull a few bytes of payload from
4670 * frags into skb->data
4672 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4674 * we do this workaround for ES2LAN, but it is un-necessary,
4675 * avoiding it could save a lot of cycles
4677 if (skb->data_len && (hdr_len == len)) {
4678 unsigned int pull_size;
4680 pull_size = min((unsigned int)4, skb->data_len);
4681 if (!__pskb_pull_tail(skb, pull_size)) {
4682 e_err("__pskb_pull_tail failed.\n");
4683 dev_kfree_skb_any(skb);
4684 return NETDEV_TX_OK;
4686 len = skb_headlen(skb);
4690 /* reserve a descriptor for the offload context */
4691 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
4695 count += TXD_USE_COUNT(len, max_txd_pwr);
4697 nr_frags = skb_shinfo(skb)->nr_frags;
4698 for (f = 0; f < nr_frags; f++)
4699 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
4702 if (adapter->hw.mac.tx_pkt_filtering)
4703 e1000_transfer_dhcp_info(adapter, skb);
4706 * need: count + 2 desc gap to keep tail from touching
4707 * head, otherwise try next time
4709 if (e1000_maybe_stop_tx(netdev, count + 2))
4710 return NETDEV_TX_BUSY;
4712 if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
4713 tx_flags |= E1000_TX_FLAGS_VLAN;
4714 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
4717 first = tx_ring->next_to_use;
4719 tso = e1000_tso(adapter, skb);
4721 dev_kfree_skb_any(skb);
4722 return NETDEV_TX_OK;
4726 tx_flags |= E1000_TX_FLAGS_TSO;
4727 else if (e1000_tx_csum(adapter, skb))
4728 tx_flags |= E1000_TX_FLAGS_CSUM;
4731 * Old method was to assume IPv4 packet by default if TSO was enabled.
4732 * 82571 hardware supports TSO capabilities for IPv6 as well...
4733 * no longer assume, we must.
4735 if (skb->protocol == htons(ETH_P_IP))
4736 tx_flags |= E1000_TX_FLAGS_IPV4;
4738 /* if count is 0 then mapping error has occured */
4739 count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss);
4741 e1000_tx_queue(adapter, tx_flags, count);
4742 /* Make sure there is space in the ring for the next send. */
4743 e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2);
4746 dev_kfree_skb_any(skb);
4747 tx_ring->buffer_info[first].time_stamp = 0;
4748 tx_ring->next_to_use = first;
4751 return NETDEV_TX_OK;
4755 * e1000_tx_timeout - Respond to a Tx Hang
4756 * @netdev: network interface device structure
4758 static void e1000_tx_timeout(struct net_device *netdev)
4760 struct e1000_adapter *adapter = netdev_priv(netdev);
4762 /* Do the reset outside of interrupt context */
4763 adapter->tx_timeout_count++;
4764 schedule_work(&adapter->reset_task);
4767 static void e1000_reset_task(struct work_struct *work)
4769 struct e1000_adapter *adapter;
4770 adapter = container_of(work, struct e1000_adapter, reset_task);
4772 e1000e_dump(adapter);
4773 e_err("Reset adapter\n");
4774 e1000e_reinit_locked(adapter);
4778 * e1000_get_stats - Get System Network Statistics
4779 * @netdev: network interface device structure
4781 * Returns the address of the device statistics structure.
4782 * The statistics are actually updated from the timer callback.
4784 static struct net_device_stats *e1000_get_stats(struct net_device *netdev)
4786 /* only return the current stats */
4787 return &netdev->stats;
4791 * e1000_change_mtu - Change the Maximum Transfer Unit
4792 * @netdev: network interface device structure
4793 * @new_mtu: new value for maximum frame size
4795 * Returns 0 on success, negative on failure
4797 static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
4799 struct e1000_adapter *adapter = netdev_priv(netdev);
4800 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
4802 /* Jumbo frame support */
4803 if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) &&
4804 !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
4805 e_err("Jumbo Frames not supported.\n");
4809 /* Supported frame sizes */
4810 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) ||
4811 (max_frame > adapter->max_hw_frame_size)) {
4812 e_err("Unsupported MTU setting\n");
4816 /* 82573 Errata 17 */
4817 if (((adapter->hw.mac.type == e1000_82573) ||
4818 (adapter->hw.mac.type == e1000_82574)) &&
4819 (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN)) {
4820 adapter->flags2 |= FLAG2_DISABLE_ASPM_L1;
4821 e1000e_disable_aspm(adapter->pdev, PCIE_LINK_STATE_L1);
4824 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
4826 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
4827 adapter->max_frame_size = max_frame;
4828 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu);
4829 netdev->mtu = new_mtu;
4830 if (netif_running(netdev))
4831 e1000e_down(adapter);
4834 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
4835 * means we reserve 2 more, this pushes us to allocate from the next
4837 * i.e. RXBUFFER_2048 --> size-4096 slab
4838 * However with the new *_jumbo_rx* routines, jumbo receives will use
4842 if (max_frame <= 2048)
4843 adapter->rx_buffer_len = 2048;
4845 adapter->rx_buffer_len = 4096;
4847 /* adjust allocation if LPE protects us, and we aren't using SBP */
4848 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
4849 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
4850 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN
4853 if (netif_running(netdev))
4856 e1000e_reset(adapter);
4858 clear_bit(__E1000_RESETTING, &adapter->state);
4863 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
4866 struct e1000_adapter *adapter = netdev_priv(netdev);
4867 struct mii_ioctl_data *data = if_mii(ifr);
4869 if (adapter->hw.phy.media_type != e1000_media_type_copper)
4874 data->phy_id = adapter->hw.phy.addr;
4877 e1000_phy_read_status(adapter);
4879 switch (data->reg_num & 0x1F) {
4881 data->val_out = adapter->phy_regs.bmcr;
4884 data->val_out = adapter->phy_regs.bmsr;
4887 data->val_out = (adapter->hw.phy.id >> 16);
4890 data->val_out = (adapter->hw.phy.id & 0xFFFF);
4893 data->val_out = adapter->phy_regs.advertise;
4896 data->val_out = adapter->phy_regs.lpa;
4899 data->val_out = adapter->phy_regs.expansion;
4902 data->val_out = adapter->phy_regs.ctrl1000;
4905 data->val_out = adapter->phy_regs.stat1000;
4908 data->val_out = adapter->phy_regs.estatus;
4921 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
4927 return e1000_mii_ioctl(netdev, ifr, cmd);
4933 static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc)
4935 struct e1000_hw *hw = &adapter->hw;
4940 /* copy MAC RARs to PHY RARs */
4941 e1000_copy_rx_addrs_to_phy_ich8lan(hw);
4943 /* copy MAC MTA to PHY MTA */
4944 for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) {
4945 mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i);
4946 e1e_wphy(hw, BM_MTA(i), (u16)(mac_reg & 0xFFFF));
4947 e1e_wphy(hw, BM_MTA(i) + 1, (u16)((mac_reg >> 16) & 0xFFFF));
4950 /* configure PHY Rx Control register */
4951 e1e_rphy(&adapter->hw, BM_RCTL, &phy_reg);
4952 mac_reg = er32(RCTL);
4953 if (mac_reg & E1000_RCTL_UPE)
4954 phy_reg |= BM_RCTL_UPE;
4955 if (mac_reg & E1000_RCTL_MPE)
4956 phy_reg |= BM_RCTL_MPE;
4957 phy_reg &= ~(BM_RCTL_MO_MASK);
4958 if (mac_reg & E1000_RCTL_MO_3)
4959 phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT)
4960 << BM_RCTL_MO_SHIFT);
4961 if (mac_reg & E1000_RCTL_BAM)
4962 phy_reg |= BM_RCTL_BAM;
4963 if (mac_reg & E1000_RCTL_PMCF)
4964 phy_reg |= BM_RCTL_PMCF;
4965 mac_reg = er32(CTRL);
4966 if (mac_reg & E1000_CTRL_RFCE)
4967 phy_reg |= BM_RCTL_RFCE;
4968 e1e_wphy(&adapter->hw, BM_RCTL, phy_reg);
4970 /* enable PHY wakeup in MAC register */
4972 ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN);
4974 /* configure and enable PHY wakeup in PHY registers */
4975 e1e_wphy(&adapter->hw, BM_WUFC, wufc);
4976 e1e_wphy(&adapter->hw, BM_WUC, E1000_WUC_PME_EN);
4978 /* activate PHY wakeup */
4979 retval = hw->phy.ops.acquire(hw);
4981 e_err("Could not acquire PHY\n");
4984 e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
4985 (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT));
4986 retval = e1000e_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, &phy_reg);
4988 e_err("Could not read PHY page 769\n");
4991 phy_reg |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT;
4992 retval = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, phy_reg);
4994 e_err("Could not set PHY Host Wakeup bit\n");
4996 hw->phy.ops.release(hw);
5001 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake,
5004 struct net_device *netdev = pci_get_drvdata(pdev);
5005 struct e1000_adapter *adapter = netdev_priv(netdev);
5006 struct e1000_hw *hw = &adapter->hw;
5007 u32 ctrl, ctrl_ext, rctl, status;
5008 /* Runtime suspend should only enable wakeup for link changes */
5009 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol;
5012 netif_device_detach(netdev);
5014 if (netif_running(netdev)) {
5015 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
5016 e1000e_down(adapter);
5017 e1000_free_irq(adapter);
5019 e1000e_reset_interrupt_capability(adapter);
5021 retval = pci_save_state(pdev);
5025 status = er32(STATUS);
5026 if (status & E1000_STATUS_LU)
5027 wufc &= ~E1000_WUFC_LNKC;
5030 e1000_setup_rctl(adapter);
5031 e1000_set_multi(netdev);
5033 /* turn on all-multi mode if wake on multicast is enabled */
5034 if (wufc & E1000_WUFC_MC) {
5036 rctl |= E1000_RCTL_MPE;
5041 /* advertise wake from D3Cold */
5042 #define E1000_CTRL_ADVD3WUC 0x00100000
5043 /* phy power management enable */
5044 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5045 ctrl |= E1000_CTRL_ADVD3WUC;
5046 if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP))
5047 ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT;
5050 if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
5051 adapter->hw.phy.media_type ==
5052 e1000_media_type_internal_serdes) {
5053 /* keep the laser running in D3 */
5054 ctrl_ext = er32(CTRL_EXT);
5055 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA;
5056 ew32(CTRL_EXT, ctrl_ext);
5059 if (adapter->flags & FLAG_IS_ICH)
5060 e1000e_disable_gig_wol_ich8lan(&adapter->hw);
5062 /* Allow time for pending master requests to run */
5063 e1000e_disable_pcie_master(&adapter->hw);
5065 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
5066 /* enable wakeup by the PHY */
5067 retval = e1000_init_phy_wakeup(adapter, wufc);
5071 /* enable wakeup by the MAC */
5073 ew32(WUC, E1000_WUC_PME_EN);
5080 *enable_wake = !!wufc;
5082 /* make sure adapter isn't asleep if manageability is enabled */
5083 if ((adapter->flags & FLAG_MNG_PT_ENABLED) ||
5084 (hw->mac.ops.check_mng_mode(hw)))
5085 *enable_wake = true;
5087 if (adapter->hw.phy.type == e1000_phy_igp_3)
5088 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw);
5091 * Release control of h/w to f/w. If f/w is AMT enabled, this
5092 * would have already happened in close and is redundant.
5094 e1000_release_hw_control(adapter);
5096 pci_disable_device(pdev);
5101 static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake)
5103 if (sleep && wake) {
5104 pci_prepare_to_sleep(pdev);
5108 pci_wake_from_d3(pdev, wake);
5109 pci_set_power_state(pdev, PCI_D3hot);
5112 static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep,
5115 struct net_device *netdev = pci_get_drvdata(pdev);
5116 struct e1000_adapter *adapter = netdev_priv(netdev);
5119 * The pci-e switch on some quad port adapters will report a
5120 * correctable error when the MAC transitions from D0 to D3. To
5121 * prevent this we need to mask off the correctable errors on the
5122 * downstream port of the pci-e switch.
5124 if (adapter->flags & FLAG_IS_QUAD_PORT) {
5125 struct pci_dev *us_dev = pdev->bus->self;
5126 int pos = pci_find_capability(us_dev, PCI_CAP_ID_EXP);
5129 pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl);
5130 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL,
5131 (devctl & ~PCI_EXP_DEVCTL_CERE));
5133 e1000_power_off(pdev, sleep, wake);
5135 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl);
5137 e1000_power_off(pdev, sleep, wake);
5141 #ifdef CONFIG_PCIEASPM
5142 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
5144 pci_disable_link_state(pdev, state);
5147 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
5153 * Both device and parent should have the same ASPM setting.
5154 * Disable ASPM in downstream component first and then upstream.
5156 pos = pci_pcie_cap(pdev);
5157 pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, ®16);
5159 pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16);
5161 if (!pdev->bus->self)
5164 pos = pci_pcie_cap(pdev->bus->self);
5165 pci_read_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, ®16);
5167 pci_write_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, reg16);
5170 void e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
5172 dev_info(&pdev->dev, "Disabling ASPM %s %s\n",
5173 (state & PCIE_LINK_STATE_L0S) ? "L0s" : "",
5174 (state & PCIE_LINK_STATE_L1) ? "L1" : "");
5176 __e1000e_disable_aspm(pdev, state);
5179 #ifdef CONFIG_PM_OPS
5180 static bool e1000e_pm_ready(struct e1000_adapter *adapter)
5182 return !!adapter->tx_ring->buffer_info;
5185 static int __e1000_resume(struct pci_dev *pdev)
5187 struct net_device *netdev = pci_get_drvdata(pdev);
5188 struct e1000_adapter *adapter = netdev_priv(netdev);
5189 struct e1000_hw *hw = &adapter->hw;
5192 pci_set_power_state(pdev, PCI_D0);
5193 pci_restore_state(pdev);
5194 pci_save_state(pdev);
5195 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
5196 e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1);
5198 e1000e_set_interrupt_capability(adapter);
5199 if (netif_running(netdev)) {
5200 err = e1000_request_irq(adapter);
5205 e1000e_power_up_phy(adapter);
5207 /* report the system wakeup cause from S3/S4 */
5208 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
5211 e1e_rphy(&adapter->hw, BM_WUS, &phy_data);
5213 e_info("PHY Wakeup cause - %s\n",
5214 phy_data & E1000_WUS_EX ? "Unicast Packet" :
5215 phy_data & E1000_WUS_MC ? "Multicast Packet" :
5216 phy_data & E1000_WUS_BC ? "Broadcast Packet" :
5217 phy_data & E1000_WUS_MAG ? "Magic Packet" :
5218 phy_data & E1000_WUS_LNKC ? "Link Status "
5219 " Change" : "other");
5221 e1e_wphy(&adapter->hw, BM_WUS, ~0);
5223 u32 wus = er32(WUS);
5225 e_info("MAC Wakeup cause - %s\n",
5226 wus & E1000_WUS_EX ? "Unicast Packet" :
5227 wus & E1000_WUS_MC ? "Multicast Packet" :
5228 wus & E1000_WUS_BC ? "Broadcast Packet" :
5229 wus & E1000_WUS_MAG ? "Magic Packet" :
5230 wus & E1000_WUS_LNKC ? "Link Status Change" :
5236 e1000e_reset(adapter);
5238 e1000_init_manageability_pt(adapter);
5240 if (netif_running(netdev))
5243 netif_device_attach(netdev);
5246 * If the controller has AMT, do not set DRV_LOAD until the interface
5247 * is up. For all other cases, let the f/w know that the h/w is now
5248 * under the control of the driver.
5250 if (!(adapter->flags & FLAG_HAS_AMT))
5251 e1000_get_hw_control(adapter);
5256 #ifdef CONFIG_PM_SLEEP
5257 static int e1000_suspend(struct device *dev)
5259 struct pci_dev *pdev = to_pci_dev(dev);
5263 retval = __e1000_shutdown(pdev, &wake, false);
5265 e1000_complete_shutdown(pdev, true, wake);
5270 static int e1000_resume(struct device *dev)
5272 struct pci_dev *pdev = to_pci_dev(dev);
5273 struct net_device *netdev = pci_get_drvdata(pdev);
5274 struct e1000_adapter *adapter = netdev_priv(netdev);
5276 if (e1000e_pm_ready(adapter))
5277 adapter->idle_check = true;
5279 return __e1000_resume(pdev);
5281 #endif /* CONFIG_PM_SLEEP */
5283 #ifdef CONFIG_PM_RUNTIME
5284 static int e1000_runtime_suspend(struct device *dev)
5286 struct pci_dev *pdev = to_pci_dev(dev);
5287 struct net_device *netdev = pci_get_drvdata(pdev);
5288 struct e1000_adapter *adapter = netdev_priv(netdev);
5290 if (e1000e_pm_ready(adapter)) {
5293 __e1000_shutdown(pdev, &wake, true);
5299 static int e1000_idle(struct device *dev)
5301 struct pci_dev *pdev = to_pci_dev(dev);
5302 struct net_device *netdev = pci_get_drvdata(pdev);
5303 struct e1000_adapter *adapter = netdev_priv(netdev);
5305 if (!e1000e_pm_ready(adapter))
5308 if (adapter->idle_check) {
5309 adapter->idle_check = false;
5310 if (!e1000e_has_link(adapter))
5311 pm_schedule_suspend(dev, MSEC_PER_SEC);
5317 static int e1000_runtime_resume(struct device *dev)
5319 struct pci_dev *pdev = to_pci_dev(dev);
5320 struct net_device *netdev = pci_get_drvdata(pdev);
5321 struct e1000_adapter *adapter = netdev_priv(netdev);
5323 if (!e1000e_pm_ready(adapter))
5326 adapter->idle_check = !dev->power.runtime_auto;
5327 return __e1000_resume(pdev);
5329 #endif /* CONFIG_PM_RUNTIME */
5330 #endif /* CONFIG_PM_OPS */
5332 static void e1000_shutdown(struct pci_dev *pdev)
5336 __e1000_shutdown(pdev, &wake, false);
5338 if (system_state == SYSTEM_POWER_OFF)
5339 e1000_complete_shutdown(pdev, false, wake);
5342 #ifdef CONFIG_NET_POLL_CONTROLLER
5344 * Polling 'interrupt' - used by things like netconsole to send skbs
5345 * without having to re-enable interrupts. It's not called while
5346 * the interrupt routine is executing.
5348 static void e1000_netpoll(struct net_device *netdev)
5350 struct e1000_adapter *adapter = netdev_priv(netdev);
5352 disable_irq(adapter->pdev->irq);
5353 e1000_intr(adapter->pdev->irq, netdev);
5355 enable_irq(adapter->pdev->irq);
5360 * e1000_io_error_detected - called when PCI error is detected
5361 * @pdev: Pointer to PCI device
5362 * @state: The current pci connection state
5364 * This function is called after a PCI bus error affecting
5365 * this device has been detected.
5367 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
5368 pci_channel_state_t state)
5370 struct net_device *netdev = pci_get_drvdata(pdev);
5371 struct e1000_adapter *adapter = netdev_priv(netdev);
5373 netif_device_detach(netdev);
5375 if (state == pci_channel_io_perm_failure)
5376 return PCI_ERS_RESULT_DISCONNECT;
5378 if (netif_running(netdev))
5379 e1000e_down(adapter);
5380 pci_disable_device(pdev);
5382 /* Request a slot slot reset. */
5383 return PCI_ERS_RESULT_NEED_RESET;
5387 * e1000_io_slot_reset - called after the pci bus has been reset.
5388 * @pdev: Pointer to PCI device
5390 * Restart the card from scratch, as if from a cold-boot. Implementation
5391 * resembles the first-half of the e1000_resume routine.
5393 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
5395 struct net_device *netdev = pci_get_drvdata(pdev);
5396 struct e1000_adapter *adapter = netdev_priv(netdev);
5397 struct e1000_hw *hw = &adapter->hw;
5399 pci_ers_result_t result;
5401 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
5402 e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1);
5403 err = pci_enable_device_mem(pdev);
5406 "Cannot re-enable PCI device after reset.\n");
5407 result = PCI_ERS_RESULT_DISCONNECT;
5409 pci_set_master(pdev);
5410 pdev->state_saved = true;
5411 pci_restore_state(pdev);
5413 pci_enable_wake(pdev, PCI_D3hot, 0);
5414 pci_enable_wake(pdev, PCI_D3cold, 0);
5416 e1000e_reset(adapter);
5418 result = PCI_ERS_RESULT_RECOVERED;
5421 pci_cleanup_aer_uncorrect_error_status(pdev);
5427 * e1000_io_resume - called when traffic can start flowing again.
5428 * @pdev: Pointer to PCI device
5430 * This callback is called when the error recovery driver tells us that
5431 * its OK to resume normal operation. Implementation resembles the
5432 * second-half of the e1000_resume routine.
5434 static void e1000_io_resume(struct pci_dev *pdev)
5436 struct net_device *netdev = pci_get_drvdata(pdev);
5437 struct e1000_adapter *adapter = netdev_priv(netdev);
5439 e1000_init_manageability_pt(adapter);
5441 if (netif_running(netdev)) {
5442 if (e1000e_up(adapter)) {
5444 "can't bring device back up after reset\n");
5449 netif_device_attach(netdev);
5452 * If the controller has AMT, do not set DRV_LOAD until the interface
5453 * is up. For all other cases, let the f/w know that the h/w is now
5454 * under the control of the driver.
5456 if (!(adapter->flags & FLAG_HAS_AMT))
5457 e1000_get_hw_control(adapter);
5461 static void e1000_print_device_info(struct e1000_adapter *adapter)
5463 struct e1000_hw *hw = &adapter->hw;
5464 struct net_device *netdev = adapter->netdev;
5467 /* print bus type/speed/width info */
5468 e_info("(PCI Express:2.5GB/s:%s) %pM\n",
5470 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
5474 e_info("Intel(R) PRO/%s Network Connection\n",
5475 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000");
5476 e1000e_read_pba_num(hw, &pba_num);
5477 e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
5478 hw->mac.type, hw->phy.type, (pba_num >> 8), (pba_num & 0xff));
5481 static void e1000_eeprom_checks(struct e1000_adapter *adapter)
5483 struct e1000_hw *hw = &adapter->hw;
5487 if (hw->mac.type != e1000_82573)
5490 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf);
5491 if (!ret_val && (!(le16_to_cpu(buf) & (1 << 0)))) {
5492 /* Deep Smart Power Down (DSPD) */
5493 dev_warn(&adapter->pdev->dev,
5494 "Warning: detected DSPD enabled in EEPROM\n");
5498 static const struct net_device_ops e1000e_netdev_ops = {
5499 .ndo_open = e1000_open,
5500 .ndo_stop = e1000_close,
5501 .ndo_start_xmit = e1000_xmit_frame,
5502 .ndo_get_stats = e1000_get_stats,
5503 .ndo_set_multicast_list = e1000_set_multi,
5504 .ndo_set_mac_address = e1000_set_mac,
5505 .ndo_change_mtu = e1000_change_mtu,
5506 .ndo_do_ioctl = e1000_ioctl,
5507 .ndo_tx_timeout = e1000_tx_timeout,
5508 .ndo_validate_addr = eth_validate_addr,
5510 .ndo_vlan_rx_register = e1000_vlan_rx_register,
5511 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid,
5512 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid,
5513 #ifdef CONFIG_NET_POLL_CONTROLLER
5514 .ndo_poll_controller = e1000_netpoll,
5519 * e1000_probe - Device Initialization Routine
5520 * @pdev: PCI device information struct
5521 * @ent: entry in e1000_pci_tbl
5523 * Returns 0 on success, negative on failure
5525 * e1000_probe initializes an adapter identified by a pci_dev structure.
5526 * The OS initialization, configuring of the adapter private structure,
5527 * and a hardware reset occur.
5529 static int __devinit e1000_probe(struct pci_dev *pdev,
5530 const struct pci_device_id *ent)
5532 struct net_device *netdev;
5533 struct e1000_adapter *adapter;
5534 struct e1000_hw *hw;
5535 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data];
5536 resource_size_t mmio_start, mmio_len;
5537 resource_size_t flash_start, flash_len;
5539 static int cards_found;
5540 int i, err, pci_using_dac;
5541 u16 eeprom_data = 0;
5542 u16 eeprom_apme_mask = E1000_EEPROM_APME;
5544 if (ei->flags2 & FLAG2_DISABLE_ASPM_L1)
5545 e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1);
5547 err = pci_enable_device_mem(pdev);
5552 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
5554 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
5558 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
5560 err = dma_set_coherent_mask(&pdev->dev,
5563 dev_err(&pdev->dev, "No usable DMA "
5564 "configuration, aborting\n");
5570 err = pci_request_selected_regions_exclusive(pdev,
5571 pci_select_bars(pdev, IORESOURCE_MEM),
5572 e1000e_driver_name);
5576 /* AER (Advanced Error Reporting) hooks */
5577 pci_enable_pcie_error_reporting(pdev);
5579 pci_set_master(pdev);
5580 /* PCI config space info */
5581 err = pci_save_state(pdev);
5583 goto err_alloc_etherdev;
5586 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
5588 goto err_alloc_etherdev;
5590 SET_NETDEV_DEV(netdev, &pdev->dev);
5592 netdev->irq = pdev->irq;
5594 pci_set_drvdata(pdev, netdev);
5595 adapter = netdev_priv(netdev);
5597 adapter->netdev = netdev;
5598 adapter->pdev = pdev;
5600 adapter->pba = ei->pba;
5601 adapter->flags = ei->flags;
5602 adapter->flags2 = ei->flags2;
5603 adapter->hw.adapter = adapter;
5604 adapter->hw.mac.type = ei->mac;
5605 adapter->max_hw_frame_size = ei->max_hw_frame_size;
5606 adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1;
5608 mmio_start = pci_resource_start(pdev, 0);
5609 mmio_len = pci_resource_len(pdev, 0);
5612 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
5613 if (!adapter->hw.hw_addr)
5616 if ((adapter->flags & FLAG_HAS_FLASH) &&
5617 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
5618 flash_start = pci_resource_start(pdev, 1);
5619 flash_len = pci_resource_len(pdev, 1);
5620 adapter->hw.flash_address = ioremap(flash_start, flash_len);
5621 if (!adapter->hw.flash_address)
5625 /* construct the net_device struct */
5626 netdev->netdev_ops = &e1000e_netdev_ops;
5627 e1000e_set_ethtool_ops(netdev);
5628 netdev->watchdog_timeo = 5 * HZ;
5629 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
5630 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
5632 netdev->mem_start = mmio_start;
5633 netdev->mem_end = mmio_start + mmio_len;
5635 adapter->bd_number = cards_found++;
5637 e1000e_check_options(adapter);
5639 /* setup adapter struct */
5640 err = e1000_sw_init(adapter);
5646 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
5647 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
5648 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
5650 err = ei->get_variants(adapter);
5654 if ((adapter->flags & FLAG_IS_ICH) &&
5655 (adapter->flags & FLAG_READ_ONLY_NVM))
5656 e1000e_write_protect_nvm_ich8lan(&adapter->hw);
5658 hw->mac.ops.get_bus_info(&adapter->hw);
5660 adapter->hw.phy.autoneg_wait_to_complete = 0;
5662 /* Copper options */
5663 if (adapter->hw.phy.media_type == e1000_media_type_copper) {
5664 adapter->hw.phy.mdix = AUTO_ALL_MODES;
5665 adapter->hw.phy.disable_polarity_correction = 0;
5666 adapter->hw.phy.ms_type = e1000_ms_hw_default;
5669 if (e1000_check_reset_block(&adapter->hw))
5670 e_info("PHY reset is blocked due to SOL/IDER session.\n");
5672 netdev->features = NETIF_F_SG |
5674 NETIF_F_HW_VLAN_TX |
5677 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
5678 netdev->features |= NETIF_F_HW_VLAN_FILTER;
5680 netdev->features |= NETIF_F_TSO;
5681 netdev->features |= NETIF_F_TSO6;
5683 netdev->vlan_features |= NETIF_F_TSO;
5684 netdev->vlan_features |= NETIF_F_TSO6;
5685 netdev->vlan_features |= NETIF_F_HW_CSUM;
5686 netdev->vlan_features |= NETIF_F_SG;
5689 netdev->features |= NETIF_F_HIGHDMA;
5691 if (e1000e_enable_mng_pass_thru(&adapter->hw))
5692 adapter->flags |= FLAG_MNG_PT_ENABLED;
5695 * before reading the NVM, reset the controller to
5696 * put the device in a known good starting state
5698 adapter->hw.mac.ops.reset_hw(&adapter->hw);
5701 * systems with ASPM and others may see the checksum fail on the first
5702 * attempt. Let's give it a few tries
5705 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0)
5708 e_err("The NVM Checksum Is Not Valid\n");
5714 e1000_eeprom_checks(adapter);
5716 /* copy the MAC address */
5717 if (e1000e_read_mac_addr(&adapter->hw))
5718 e_err("NVM Read Error while reading MAC address\n");
5720 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
5721 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
5723 if (!is_valid_ether_addr(netdev->perm_addr)) {
5724 e_err("Invalid MAC Address: %pM\n", netdev->perm_addr);
5729 init_timer(&adapter->watchdog_timer);
5730 adapter->watchdog_timer.function = &e1000_watchdog;
5731 adapter->watchdog_timer.data = (unsigned long) adapter;
5733 init_timer(&adapter->phy_info_timer);
5734 adapter->phy_info_timer.function = &e1000_update_phy_info;
5735 adapter->phy_info_timer.data = (unsigned long) adapter;
5737 INIT_WORK(&adapter->reset_task, e1000_reset_task);
5738 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
5739 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround);
5740 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task);
5741 INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang);
5743 /* Initialize link parameters. User can change them with ethtool */
5744 adapter->hw.mac.autoneg = 1;
5745 adapter->fc_autoneg = 1;
5746 adapter->hw.fc.requested_mode = e1000_fc_default;
5747 adapter->hw.fc.current_mode = e1000_fc_default;
5748 adapter->hw.phy.autoneg_advertised = 0x2f;
5750 /* ring size defaults */
5751 adapter->rx_ring->count = 256;
5752 adapter->tx_ring->count = 256;
5755 * Initial Wake on LAN setting - If APM wake is enabled in
5756 * the EEPROM, enable the ACPI Magic Packet filter
5758 if (adapter->flags & FLAG_APME_IN_WUC) {
5759 /* APME bit in EEPROM is mapped to WUC.APME */
5760 eeprom_data = er32(WUC);
5761 eeprom_apme_mask = E1000_WUC_APME;
5762 if (eeprom_data & E1000_WUC_PHY_WAKE)
5763 adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP;
5764 } else if (adapter->flags & FLAG_APME_IN_CTRL3) {
5765 if (adapter->flags & FLAG_APME_CHECK_PORT_B &&
5766 (adapter->hw.bus.func == 1))
5767 e1000_read_nvm(&adapter->hw,
5768 NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
5770 e1000_read_nvm(&adapter->hw,
5771 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
5774 /* fetch WoL from EEPROM */
5775 if (eeprom_data & eeprom_apme_mask)
5776 adapter->eeprom_wol |= E1000_WUFC_MAG;
5779 * now that we have the eeprom settings, apply the special cases
5780 * where the eeprom may be wrong or the board simply won't support
5781 * wake on lan on a particular port
5783 if (!(adapter->flags & FLAG_HAS_WOL))
5784 adapter->eeprom_wol = 0;
5786 /* initialize the wol settings based on the eeprom settings */
5787 adapter->wol = adapter->eeprom_wol;
5788 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
5790 /* save off EEPROM version number */
5791 e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers);
5793 /* reset the hardware with the new settings */
5794 e1000e_reset(adapter);
5797 * If the controller has AMT, do not set DRV_LOAD until the interface
5798 * is up. For all other cases, let the f/w know that the h/w is now
5799 * under the control of the driver.
5801 if (!(adapter->flags & FLAG_HAS_AMT))
5802 e1000_get_hw_control(adapter);
5804 strcpy(netdev->name, "eth%d");
5805 err = register_netdev(netdev);
5809 /* carrier off reporting is important to ethtool even BEFORE open */
5810 netif_carrier_off(netdev);
5812 e1000_print_device_info(adapter);
5814 if (pci_dev_run_wake(pdev)) {
5815 pm_runtime_set_active(&pdev->dev);
5816 pm_runtime_enable(&pdev->dev);
5818 pm_schedule_suspend(&pdev->dev, MSEC_PER_SEC);
5823 if (!(adapter->flags & FLAG_HAS_AMT))
5824 e1000_release_hw_control(adapter);
5826 if (!e1000_check_reset_block(&adapter->hw))
5827 e1000_phy_hw_reset(&adapter->hw);
5830 kfree(adapter->tx_ring);
5831 kfree(adapter->rx_ring);
5833 if (adapter->hw.flash_address)
5834 iounmap(adapter->hw.flash_address);
5835 e1000e_reset_interrupt_capability(adapter);
5837 iounmap(adapter->hw.hw_addr);
5839 free_netdev(netdev);
5841 pci_release_selected_regions(pdev,
5842 pci_select_bars(pdev, IORESOURCE_MEM));
5845 pci_disable_device(pdev);
5850 * e1000_remove - Device Removal Routine
5851 * @pdev: PCI device information struct
5853 * e1000_remove is called by the PCI subsystem to alert the driver
5854 * that it should release a PCI device. The could be caused by a
5855 * Hot-Plug event, or because the driver is going to be removed from
5858 static void __devexit e1000_remove(struct pci_dev *pdev)
5860 struct net_device *netdev = pci_get_drvdata(pdev);
5861 struct e1000_adapter *adapter = netdev_priv(netdev);
5862 bool down = test_bit(__E1000_DOWN, &adapter->state);
5864 pm_runtime_get_sync(&pdev->dev);
5867 * flush_scheduled work may reschedule our watchdog task, so
5868 * explicitly disable watchdog tasks from being rescheduled
5871 set_bit(__E1000_DOWN, &adapter->state);
5872 del_timer_sync(&adapter->watchdog_timer);
5873 del_timer_sync(&adapter->phy_info_timer);
5875 cancel_work_sync(&adapter->reset_task);
5876 cancel_work_sync(&adapter->watchdog_task);
5877 cancel_work_sync(&adapter->downshift_task);
5878 cancel_work_sync(&adapter->update_phy_task);
5879 cancel_work_sync(&adapter->print_hang_task);
5880 flush_scheduled_work();
5882 if (!(netdev->flags & IFF_UP))
5883 e1000_power_down_phy(adapter);
5885 /* Don't lie to e1000_close() down the road. */
5887 clear_bit(__E1000_DOWN, &adapter->state);
5888 unregister_netdev(netdev);
5890 if (pci_dev_run_wake(pdev)) {
5891 pm_runtime_disable(&pdev->dev);
5892 pm_runtime_set_suspended(&pdev->dev);
5894 pm_runtime_put_noidle(&pdev->dev);
5897 * Release control of h/w to f/w. If f/w is AMT enabled, this
5898 * would have already happened in close and is redundant.
5900 e1000_release_hw_control(adapter);
5902 e1000e_reset_interrupt_capability(adapter);
5903 kfree(adapter->tx_ring);
5904 kfree(adapter->rx_ring);
5906 iounmap(adapter->hw.hw_addr);
5907 if (adapter->hw.flash_address)
5908 iounmap(adapter->hw.flash_address);
5909 pci_release_selected_regions(pdev,
5910 pci_select_bars(pdev, IORESOURCE_MEM));
5912 free_netdev(netdev);
5915 pci_disable_pcie_error_reporting(pdev);
5917 pci_disable_device(pdev);
5920 /* PCI Error Recovery (ERS) */
5921 static struct pci_error_handlers e1000_err_handler = {
5922 .error_detected = e1000_io_error_detected,
5923 .slot_reset = e1000_io_slot_reset,
5924 .resume = e1000_io_resume,
5927 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = {
5928 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 },
5929 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 },
5930 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 },
5931 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 },
5932 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 },
5933 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 },
5934 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 },
5935 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 },
5936 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 },
5938 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 },
5939 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 },
5940 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 },
5941 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 },
5943 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 },
5944 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 },
5945 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 },
5947 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 },
5948 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 },
5949 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 },
5951 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT),
5952 board_80003es2lan },
5953 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT),
5954 board_80003es2lan },
5955 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT),
5956 board_80003es2lan },
5957 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT),
5958 board_80003es2lan },
5960 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan },
5961 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan },
5962 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan },
5963 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan },
5964 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan },
5965 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan },
5966 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan },
5967 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan },
5969 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan },
5970 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan },
5971 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan },
5972 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan },
5973 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan },
5974 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan },
5975 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan },
5976 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan },
5977 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan },
5979 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan },
5980 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan },
5981 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan },
5983 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan },
5984 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan },
5985 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan },
5987 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan },
5988 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan },
5989 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan },
5990 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan },
5992 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan },
5993 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan },
5995 { } /* terminate list */
5997 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
5999 #ifdef CONFIG_PM_OPS
6000 static const struct dev_pm_ops e1000_pm_ops = {
6001 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume)
6002 SET_RUNTIME_PM_OPS(e1000_runtime_suspend,
6003 e1000_runtime_resume, e1000_idle)
6007 /* PCI Device API Driver */
6008 static struct pci_driver e1000_driver = {
6009 .name = e1000e_driver_name,
6010 .id_table = e1000_pci_tbl,
6011 .probe = e1000_probe,
6012 .remove = __devexit_p(e1000_remove),
6013 #ifdef CONFIG_PM_OPS
6014 .driver.pm = &e1000_pm_ops,
6016 .shutdown = e1000_shutdown,
6017 .err_handler = &e1000_err_handler
6021 * e1000_init_module - Driver Registration Routine
6023 * e1000_init_module is the first routine called when the driver is
6024 * loaded. All it does is register with the PCI subsystem.
6026 static int __init e1000_init_module(void)
6029 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
6030 e1000e_driver_version);
6031 pr_info("Copyright (c) 1999 - 2009 Intel Corporation.\n");
6032 ret = pci_register_driver(&e1000_driver);
6036 module_init(e1000_init_module);
6039 * e1000_exit_module - Driver Exit Cleanup Routine
6041 * e1000_exit_module is called just before the driver is removed
6044 static void __exit e1000_exit_module(void)
6046 pci_unregister_driver(&e1000_driver);
6048 module_exit(e1000_exit_module);
6051 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
6052 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
6053 MODULE_LICENSE("GPL");
6054 MODULE_VERSION(DRV_VERSION);