1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2010 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_EXTRAVERSION "-k2"
57 #define DRV_VERSION "1.2.7" DRV_EXTRAVERSION
58 char e1000e_driver_name[] = "e1000e";
59 const char e1000e_driver_version[] = DRV_VERSION;
61 static const struct e1000_info *e1000_info_tbl[] = {
62 [board_82571] = &e1000_82571_info,
63 [board_82572] = &e1000_82572_info,
64 [board_82573] = &e1000_82573_info,
65 [board_82574] = &e1000_82574_info,
66 [board_82583] = &e1000_82583_info,
67 [board_80003es2lan] = &e1000_es2_info,
68 [board_ich8lan] = &e1000_ich8_info,
69 [board_ich9lan] = &e1000_ich9_info,
70 [board_ich10lan] = &e1000_ich10_info,
71 [board_pchlan] = &e1000_pch_info,
72 [board_pch2lan] = &e1000_pch2_info,
75 struct e1000_reg_info {
80 #define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */
81 #define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */
82 #define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */
83 #define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */
84 #define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */
86 #define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */
87 #define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */
88 #define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */
89 #define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */
90 #define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */
92 static const struct e1000_reg_info e1000_reg_info_tbl[] = {
94 /* General Registers */
96 {E1000_STATUS, "STATUS"},
97 {E1000_CTRL_EXT, "CTRL_EXT"},
99 /* Interrupt Registers */
103 {E1000_RCTL, "RCTL"},
104 {E1000_RDLEN, "RDLEN"},
107 {E1000_RDTR, "RDTR"},
108 {E1000_RXDCTL(0), "RXDCTL"},
110 {E1000_RDBAL, "RDBAL"},
111 {E1000_RDBAH, "RDBAH"},
112 {E1000_RDFH, "RDFH"},
113 {E1000_RDFT, "RDFT"},
114 {E1000_RDFHS, "RDFHS"},
115 {E1000_RDFTS, "RDFTS"},
116 {E1000_RDFPC, "RDFPC"},
119 {E1000_TCTL, "TCTL"},
120 {E1000_TDBAL, "TDBAL"},
121 {E1000_TDBAH, "TDBAH"},
122 {E1000_TDLEN, "TDLEN"},
125 {E1000_TIDV, "TIDV"},
126 {E1000_TXDCTL(0), "TXDCTL"},
127 {E1000_TADV, "TADV"},
128 {E1000_TARC(0), "TARC"},
129 {E1000_TDFH, "TDFH"},
130 {E1000_TDFT, "TDFT"},
131 {E1000_TDFHS, "TDFHS"},
132 {E1000_TDFTS, "TDFTS"},
133 {E1000_TDFPC, "TDFPC"},
135 /* List Terminator */
140 * e1000_regdump - register printout routine
142 static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo)
148 switch (reginfo->ofs) {
149 case E1000_RXDCTL(0):
150 for (n = 0; n < 2; n++)
151 regs[n] = __er32(hw, E1000_RXDCTL(n));
153 case E1000_TXDCTL(0):
154 for (n = 0; n < 2; n++)
155 regs[n] = __er32(hw, E1000_TXDCTL(n));
158 for (n = 0; n < 2; n++)
159 regs[n] = __er32(hw, E1000_TARC(n));
162 printk(KERN_INFO "%-15s %08x\n",
163 reginfo->name, __er32(hw, reginfo->ofs));
167 snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]");
168 printk(KERN_INFO "%-15s ", rname);
169 for (n = 0; n < 2; n++)
170 printk(KERN_CONT "%08x ", regs[n]);
171 printk(KERN_CONT "\n");
176 * e1000e_dump - Print registers, tx-ring and rx-ring
178 static void e1000e_dump(struct e1000_adapter *adapter)
180 struct net_device *netdev = adapter->netdev;
181 struct e1000_hw *hw = &adapter->hw;
182 struct e1000_reg_info *reginfo;
183 struct e1000_ring *tx_ring = adapter->tx_ring;
184 struct e1000_tx_desc *tx_desc;
185 struct my_u0 { u64 a; u64 b; } *u0;
186 struct e1000_buffer *buffer_info;
187 struct e1000_ring *rx_ring = adapter->rx_ring;
188 union e1000_rx_desc_packet_split *rx_desc_ps;
189 struct e1000_rx_desc *rx_desc;
190 struct my_u1 { u64 a; u64 b; u64 c; u64 d; } *u1;
194 if (!netif_msg_hw(adapter))
197 /* Print netdevice Info */
199 dev_info(&adapter->pdev->dev, "Net device Info\n");
200 printk(KERN_INFO "Device Name state "
201 "trans_start last_rx\n");
202 printk(KERN_INFO "%-15s %016lX %016lX %016lX\n",
209 /* Print Registers */
210 dev_info(&adapter->pdev->dev, "Register Dump\n");
211 printk(KERN_INFO " Register Name Value\n");
212 for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl;
213 reginfo->name; reginfo++) {
214 e1000_regdump(hw, reginfo);
217 /* Print TX Ring Summary */
218 if (!netdev || !netif_running(netdev))
221 dev_info(&adapter->pdev->dev, "TX Rings Summary\n");
222 printk(KERN_INFO "Queue [NTU] [NTC] [bi(ntc)->dma ]"
223 " leng ntw timestamp\n");
224 buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean];
225 printk(KERN_INFO " %5d %5X %5X %016llX %04X %3X %016llX\n",
226 0, tx_ring->next_to_use, tx_ring->next_to_clean,
227 (u64)buffer_info->dma,
229 buffer_info->next_to_watch,
230 (u64)buffer_info->time_stamp);
233 if (!netif_msg_tx_done(adapter))
234 goto rx_ring_summary;
236 dev_info(&adapter->pdev->dev, "TX Rings Dump\n");
238 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
240 * Legacy Transmit Descriptor
241 * +--------------------------------------------------------------+
242 * 0 | Buffer Address [63:0] (Reserved on Write Back) |
243 * +--------------------------------------------------------------+
244 * 8 | Special | CSS | Status | CMD | CSO | Length |
245 * +--------------------------------------------------------------+
246 * 63 48 47 36 35 32 31 24 23 16 15 0
248 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
249 * 63 48 47 40 39 32 31 16 15 8 7 0
250 * +----------------------------------------------------------------+
251 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
252 * +----------------------------------------------------------------+
253 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
254 * +----------------------------------------------------------------+
255 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
257 * Extended Data Descriptor (DTYP=0x1)
258 * +----------------------------------------------------------------+
259 * 0 | Buffer Address [63:0] |
260 * +----------------------------------------------------------------+
261 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
262 * +----------------------------------------------------------------+
263 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
265 printk(KERN_INFO "Tl[desc] [address 63:0 ] [SpeCssSCmCsLen]"
266 " [bi->dma ] leng ntw timestamp bi->skb "
267 "<-- Legacy format\n");
268 printk(KERN_INFO "Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen]"
269 " [bi->dma ] leng ntw timestamp bi->skb "
270 "<-- Ext Context format\n");
271 printk(KERN_INFO "Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen]"
272 " [bi->dma ] leng ntw timestamp bi->skb "
273 "<-- Ext Data format\n");
274 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
275 tx_desc = E1000_TX_DESC(*tx_ring, i);
276 buffer_info = &tx_ring->buffer_info[i];
277 u0 = (struct my_u0 *)tx_desc;
278 printk(KERN_INFO "T%c[0x%03X] %016llX %016llX %016llX "
279 "%04X %3X %016llX %p",
280 (!(le64_to_cpu(u0->b) & (1<<29)) ? 'l' :
281 ((le64_to_cpu(u0->b) & (1<<20)) ? 'd' : 'c')), i,
282 le64_to_cpu(u0->a), le64_to_cpu(u0->b),
283 (u64)buffer_info->dma, buffer_info->length,
284 buffer_info->next_to_watch, (u64)buffer_info->time_stamp,
286 if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean)
287 printk(KERN_CONT " NTC/U\n");
288 else if (i == tx_ring->next_to_use)
289 printk(KERN_CONT " NTU\n");
290 else if (i == tx_ring->next_to_clean)
291 printk(KERN_CONT " NTC\n");
293 printk(KERN_CONT "\n");
295 if (netif_msg_pktdata(adapter) && buffer_info->dma != 0)
296 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS,
297 16, 1, phys_to_virt(buffer_info->dma),
298 buffer_info->length, true);
301 /* Print RX Rings Summary */
303 dev_info(&adapter->pdev->dev, "RX Rings Summary\n");
304 printk(KERN_INFO "Queue [NTU] [NTC]\n");
305 printk(KERN_INFO " %5d %5X %5X\n", 0,
306 rx_ring->next_to_use, rx_ring->next_to_clean);
309 if (!netif_msg_rx_status(adapter))
312 dev_info(&adapter->pdev->dev, "RX Rings Dump\n");
313 switch (adapter->rx_ps_pages) {
317 /* [Extended] Packet Split Receive Descriptor Format
319 * +-----------------------------------------------------+
320 * 0 | Buffer Address 0 [63:0] |
321 * +-----------------------------------------------------+
322 * 8 | Buffer Address 1 [63:0] |
323 * +-----------------------------------------------------+
324 * 16 | Buffer Address 2 [63:0] |
325 * +-----------------------------------------------------+
326 * 24 | Buffer Address 3 [63:0] |
327 * +-----------------------------------------------------+
329 printk(KERN_INFO "R [desc] [buffer 0 63:0 ] "
331 "[buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] "
332 "[bi->skb] <-- Ext Pkt Split format\n");
333 /* [Extended] Receive Descriptor (Write-Back) Format
335 * 63 48 47 32 31 13 12 8 7 4 3 0
336 * +------------------------------------------------------+
337 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
338 * | Checksum | Ident | | Queue | | Type |
339 * +------------------------------------------------------+
340 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
341 * +------------------------------------------------------+
342 * 63 48 47 32 31 20 19 0
344 printk(KERN_INFO "RWB[desc] [ck ipid mrqhsh] "
346 "[ l3 l2 l1 hs] [reserved ] ---------------- "
347 "[bi->skb] <-- Ext Rx Write-Back format\n");
348 for (i = 0; i < rx_ring->count; i++) {
349 buffer_info = &rx_ring->buffer_info[i];
350 rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i);
351 u1 = (struct my_u1 *)rx_desc_ps;
353 le32_to_cpu(rx_desc_ps->wb.middle.status_error);
354 if (staterr & E1000_RXD_STAT_DD) {
355 /* Descriptor Done */
356 printk(KERN_INFO "RWB[0x%03X] %016llX "
357 "%016llX %016llX %016llX "
358 "---------------- %p", i,
365 printk(KERN_INFO "R [0x%03X] %016llX "
366 "%016llX %016llX %016llX %016llX %p", i,
371 (u64)buffer_info->dma,
374 if (netif_msg_pktdata(adapter))
375 print_hex_dump(KERN_INFO, "",
376 DUMP_PREFIX_ADDRESS, 16, 1,
377 phys_to_virt(buffer_info->dma),
378 adapter->rx_ps_bsize0, true);
381 if (i == rx_ring->next_to_use)
382 printk(KERN_CONT " NTU\n");
383 else if (i == rx_ring->next_to_clean)
384 printk(KERN_CONT " NTC\n");
386 printk(KERN_CONT "\n");
391 /* Legacy Receive Descriptor Format
393 * +-----------------------------------------------------+
394 * | Buffer Address [63:0] |
395 * +-----------------------------------------------------+
396 * | VLAN Tag | Errors | Status 0 | Packet csum | Length |
397 * +-----------------------------------------------------+
398 * 63 48 47 40 39 32 31 16 15 0
400 printk(KERN_INFO "Rl[desc] [address 63:0 ] "
401 "[vl er S cks ln] [bi->dma ] [bi->skb] "
402 "<-- Legacy format\n");
403 for (i = 0; rx_ring->desc && (i < rx_ring->count); i++) {
404 rx_desc = E1000_RX_DESC(*rx_ring, i);
405 buffer_info = &rx_ring->buffer_info[i];
406 u0 = (struct my_u0 *)rx_desc;
407 printk(KERN_INFO "Rl[0x%03X] %016llX %016llX "
409 i, le64_to_cpu(u0->a), le64_to_cpu(u0->b),
410 (u64)buffer_info->dma, buffer_info->skb);
411 if (i == rx_ring->next_to_use)
412 printk(KERN_CONT " NTU\n");
413 else if (i == rx_ring->next_to_clean)
414 printk(KERN_CONT " NTC\n");
416 printk(KERN_CONT "\n");
418 if (netif_msg_pktdata(adapter))
419 print_hex_dump(KERN_INFO, "",
421 16, 1, phys_to_virt(buffer_info->dma),
422 adapter->rx_buffer_len, true);
431 * e1000_desc_unused - calculate if we have unused descriptors
433 static int e1000_desc_unused(struct e1000_ring *ring)
435 if (ring->next_to_clean > ring->next_to_use)
436 return ring->next_to_clean - ring->next_to_use - 1;
438 return ring->count + ring->next_to_clean - ring->next_to_use - 1;
442 * e1000_receive_skb - helper function to handle Rx indications
443 * @adapter: board private structure
444 * @status: descriptor status field as written by hardware
445 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
446 * @skb: pointer to sk_buff to be indicated to stack
448 static void e1000_receive_skb(struct e1000_adapter *adapter,
449 struct net_device *netdev,
451 u8 status, __le16 vlan)
453 skb->protocol = eth_type_trans(skb, netdev);
455 if (adapter->vlgrp && (status & E1000_RXD_STAT_VP))
456 vlan_gro_receive(&adapter->napi, adapter->vlgrp,
457 le16_to_cpu(vlan), skb);
459 napi_gro_receive(&adapter->napi, skb);
463 * e1000_rx_checksum - Receive Checksum Offload for 82543
464 * @adapter: board private structure
465 * @status_err: receive descriptor status and error fields
466 * @csum: receive descriptor csum field
467 * @sk_buff: socket buffer with received data
469 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
470 u32 csum, struct sk_buff *skb)
472 u16 status = (u16)status_err;
473 u8 errors = (u8)(status_err >> 24);
474 skb->ip_summed = CHECKSUM_NONE;
476 /* Ignore Checksum bit is set */
477 if (status & E1000_RXD_STAT_IXSM)
479 /* TCP/UDP checksum error bit is set */
480 if (errors & E1000_RXD_ERR_TCPE) {
481 /* let the stack verify checksum errors */
482 adapter->hw_csum_err++;
486 /* TCP/UDP Checksum has not been calculated */
487 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
490 /* It must be a TCP or UDP packet with a valid checksum */
491 if (status & E1000_RXD_STAT_TCPCS) {
492 /* TCP checksum is good */
493 skb->ip_summed = CHECKSUM_UNNECESSARY;
496 * IP fragment with UDP payload
497 * Hardware complements the payload checksum, so we undo it
498 * and then put the value in host order for further stack use.
500 __sum16 sum = (__force __sum16)htons(csum);
501 skb->csum = csum_unfold(~sum);
502 skb->ip_summed = CHECKSUM_COMPLETE;
504 adapter->hw_csum_good++;
508 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
509 * @adapter: address of board private structure
511 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
514 struct net_device *netdev = adapter->netdev;
515 struct pci_dev *pdev = adapter->pdev;
516 struct e1000_ring *rx_ring = adapter->rx_ring;
517 struct e1000_rx_desc *rx_desc;
518 struct e1000_buffer *buffer_info;
521 unsigned int bufsz = adapter->rx_buffer_len;
523 i = rx_ring->next_to_use;
524 buffer_info = &rx_ring->buffer_info[i];
526 while (cleaned_count--) {
527 skb = buffer_info->skb;
533 skb = netdev_alloc_skb_ip_align(netdev, bufsz);
535 /* Better luck next round */
536 adapter->alloc_rx_buff_failed++;
540 buffer_info->skb = skb;
542 buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
543 adapter->rx_buffer_len,
545 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
546 dev_err(&pdev->dev, "RX DMA map failed\n");
547 adapter->rx_dma_failed++;
551 rx_desc = E1000_RX_DESC(*rx_ring, i);
552 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
554 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
556 * Force memory writes to complete before letting h/w
557 * know there are new descriptors to fetch. (Only
558 * applicable for weak-ordered memory model archs,
562 writel(i, adapter->hw.hw_addr + rx_ring->tail);
565 if (i == rx_ring->count)
567 buffer_info = &rx_ring->buffer_info[i];
570 rx_ring->next_to_use = i;
574 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
575 * @adapter: address of board private structure
577 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
580 struct net_device *netdev = adapter->netdev;
581 struct pci_dev *pdev = adapter->pdev;
582 union e1000_rx_desc_packet_split *rx_desc;
583 struct e1000_ring *rx_ring = adapter->rx_ring;
584 struct e1000_buffer *buffer_info;
585 struct e1000_ps_page *ps_page;
589 i = rx_ring->next_to_use;
590 buffer_info = &rx_ring->buffer_info[i];
592 while (cleaned_count--) {
593 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
595 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
596 ps_page = &buffer_info->ps_pages[j];
597 if (j >= adapter->rx_ps_pages) {
598 /* all unused desc entries get hw null ptr */
599 rx_desc->read.buffer_addr[j+1] = ~cpu_to_le64(0);
602 if (!ps_page->page) {
603 ps_page->page = alloc_page(GFP_ATOMIC);
604 if (!ps_page->page) {
605 adapter->alloc_rx_buff_failed++;
608 ps_page->dma = dma_map_page(&pdev->dev,
612 if (dma_mapping_error(&pdev->dev,
614 dev_err(&adapter->pdev->dev,
615 "RX DMA page map failed\n");
616 adapter->rx_dma_failed++;
621 * Refresh the desc even if buffer_addrs
622 * didn't change because each write-back
625 rx_desc->read.buffer_addr[j+1] =
626 cpu_to_le64(ps_page->dma);
629 skb = netdev_alloc_skb_ip_align(netdev,
630 adapter->rx_ps_bsize0);
633 adapter->alloc_rx_buff_failed++;
637 buffer_info->skb = skb;
638 buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
639 adapter->rx_ps_bsize0,
641 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
642 dev_err(&pdev->dev, "RX DMA map failed\n");
643 adapter->rx_dma_failed++;
645 dev_kfree_skb_any(skb);
646 buffer_info->skb = NULL;
650 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
652 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
654 * Force memory writes to complete before letting h/w
655 * know there are new descriptors to fetch. (Only
656 * applicable for weak-ordered memory model archs,
660 writel(i<<1, adapter->hw.hw_addr + rx_ring->tail);
664 if (i == rx_ring->count)
666 buffer_info = &rx_ring->buffer_info[i];
670 rx_ring->next_to_use = i;
674 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
675 * @adapter: address of board private structure
676 * @cleaned_count: number of buffers to allocate this pass
679 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
682 struct net_device *netdev = adapter->netdev;
683 struct pci_dev *pdev = adapter->pdev;
684 struct e1000_rx_desc *rx_desc;
685 struct e1000_ring *rx_ring = adapter->rx_ring;
686 struct e1000_buffer *buffer_info;
689 unsigned int bufsz = 256 - 16 /* for skb_reserve */;
691 i = rx_ring->next_to_use;
692 buffer_info = &rx_ring->buffer_info[i];
694 while (cleaned_count--) {
695 skb = buffer_info->skb;
701 skb = netdev_alloc_skb_ip_align(netdev, bufsz);
702 if (unlikely(!skb)) {
703 /* Better luck next round */
704 adapter->alloc_rx_buff_failed++;
708 buffer_info->skb = skb;
710 /* allocate a new page if necessary */
711 if (!buffer_info->page) {
712 buffer_info->page = alloc_page(GFP_ATOMIC);
713 if (unlikely(!buffer_info->page)) {
714 adapter->alloc_rx_buff_failed++;
719 if (!buffer_info->dma)
720 buffer_info->dma = dma_map_page(&pdev->dev,
721 buffer_info->page, 0,
725 rx_desc = E1000_RX_DESC(*rx_ring, i);
726 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
728 if (unlikely(++i == rx_ring->count))
730 buffer_info = &rx_ring->buffer_info[i];
733 if (likely(rx_ring->next_to_use != i)) {
734 rx_ring->next_to_use = i;
735 if (unlikely(i-- == 0))
736 i = (rx_ring->count - 1);
738 /* Force memory writes to complete before letting h/w
739 * know there are new descriptors to fetch. (Only
740 * applicable for weak-ordered memory model archs,
743 writel(i, adapter->hw.hw_addr + rx_ring->tail);
748 * e1000_clean_rx_irq - Send received data up the network stack; legacy
749 * @adapter: board private structure
751 * the return value indicates whether actual cleaning was done, there
752 * is no guarantee that everything was cleaned
754 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
755 int *work_done, int work_to_do)
757 struct net_device *netdev = adapter->netdev;
758 struct pci_dev *pdev = adapter->pdev;
759 struct e1000_hw *hw = &adapter->hw;
760 struct e1000_ring *rx_ring = adapter->rx_ring;
761 struct e1000_rx_desc *rx_desc, *next_rxd;
762 struct e1000_buffer *buffer_info, *next_buffer;
765 int cleaned_count = 0;
767 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
769 i = rx_ring->next_to_clean;
770 rx_desc = E1000_RX_DESC(*rx_ring, i);
771 buffer_info = &rx_ring->buffer_info[i];
773 while (rx_desc->status & E1000_RXD_STAT_DD) {
777 if (*work_done >= work_to_do)
781 status = rx_desc->status;
782 skb = buffer_info->skb;
783 buffer_info->skb = NULL;
785 prefetch(skb->data - NET_IP_ALIGN);
788 if (i == rx_ring->count)
790 next_rxd = E1000_RX_DESC(*rx_ring, i);
793 next_buffer = &rx_ring->buffer_info[i];
797 dma_unmap_single(&pdev->dev,
799 adapter->rx_buffer_len,
801 buffer_info->dma = 0;
803 length = le16_to_cpu(rx_desc->length);
806 * !EOP means multiple descriptors were used to store a single
807 * packet, if that's the case we need to toss it. In fact, we
808 * need to toss every packet with the EOP bit clear and the
809 * next frame that _does_ have the EOP bit set, as it is by
810 * definition only a frame fragment
812 if (unlikely(!(status & E1000_RXD_STAT_EOP)))
813 adapter->flags2 |= FLAG2_IS_DISCARDING;
815 if (adapter->flags2 & FLAG2_IS_DISCARDING) {
816 /* All receives must fit into a single buffer */
817 e_dbg("Receive packet consumed multiple buffers\n");
819 buffer_info->skb = skb;
820 if (status & E1000_RXD_STAT_EOP)
821 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
825 if (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) {
827 buffer_info->skb = skb;
831 /* adjust length to remove Ethernet CRC */
832 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING))
835 total_rx_bytes += length;
839 * code added for copybreak, this should improve
840 * performance for small packets with large amounts
841 * of reassembly being done in the stack
843 if (length < copybreak) {
844 struct sk_buff *new_skb =
845 netdev_alloc_skb_ip_align(netdev, length);
847 skb_copy_to_linear_data_offset(new_skb,
853 /* save the skb in buffer_info as good */
854 buffer_info->skb = skb;
857 /* else just continue with the old one */
859 /* end copybreak code */
860 skb_put(skb, length);
862 /* Receive Checksum Offload */
863 e1000_rx_checksum(adapter,
865 ((u32)(rx_desc->errors) << 24),
866 le16_to_cpu(rx_desc->csum), skb);
868 e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special);
873 /* return some buffers to hardware, one at a time is too slow */
874 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
875 adapter->alloc_rx_buf(adapter, cleaned_count);
879 /* use prefetched values */
881 buffer_info = next_buffer;
883 rx_ring->next_to_clean = i;
885 cleaned_count = e1000_desc_unused(rx_ring);
887 adapter->alloc_rx_buf(adapter, cleaned_count);
889 adapter->total_rx_bytes += total_rx_bytes;
890 adapter->total_rx_packets += total_rx_packets;
891 netdev->stats.rx_bytes += total_rx_bytes;
892 netdev->stats.rx_packets += total_rx_packets;
896 static void e1000_put_txbuf(struct e1000_adapter *adapter,
897 struct e1000_buffer *buffer_info)
899 if (buffer_info->dma) {
900 if (buffer_info->mapped_as_page)
901 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma,
902 buffer_info->length, DMA_TO_DEVICE);
904 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma,
905 buffer_info->length, DMA_TO_DEVICE);
906 buffer_info->dma = 0;
908 if (buffer_info->skb) {
909 dev_kfree_skb_any(buffer_info->skb);
910 buffer_info->skb = NULL;
912 buffer_info->time_stamp = 0;
915 static void e1000_print_hw_hang(struct work_struct *work)
917 struct e1000_adapter *adapter = container_of(work,
918 struct e1000_adapter,
920 struct e1000_ring *tx_ring = adapter->tx_ring;
921 unsigned int i = tx_ring->next_to_clean;
922 unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
923 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop);
924 struct e1000_hw *hw = &adapter->hw;
925 u16 phy_status, phy_1000t_status, phy_ext_status;
928 e1e_rphy(hw, PHY_STATUS, &phy_status);
929 e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status);
930 e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status);
932 pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status);
934 /* detected Hardware unit hang */
935 e_err("Detected Hardware Unit Hang:\n"
938 " next_to_use <%x>\n"
939 " next_to_clean <%x>\n"
940 "buffer_info[next_to_clean]:\n"
941 " time_stamp <%lx>\n"
942 " next_to_watch <%x>\n"
944 " next_to_watch.status <%x>\n"
947 "PHY 1000BASE-T Status <%x>\n"
948 "PHY Extended Status <%x>\n"
950 readl(adapter->hw.hw_addr + tx_ring->head),
951 readl(adapter->hw.hw_addr + tx_ring->tail),
952 tx_ring->next_to_use,
953 tx_ring->next_to_clean,
954 tx_ring->buffer_info[eop].time_stamp,
957 eop_desc->upper.fields.status,
966 * e1000_clean_tx_irq - Reclaim resources after transmit completes
967 * @adapter: board private structure
969 * the return value indicates whether actual cleaning was done, there
970 * is no guarantee that everything was cleaned
972 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)
974 struct net_device *netdev = adapter->netdev;
975 struct e1000_hw *hw = &adapter->hw;
976 struct e1000_ring *tx_ring = adapter->tx_ring;
977 struct e1000_tx_desc *tx_desc, *eop_desc;
978 struct e1000_buffer *buffer_info;
980 unsigned int count = 0;
981 unsigned int total_tx_bytes = 0, total_tx_packets = 0;
983 i = tx_ring->next_to_clean;
984 eop = tx_ring->buffer_info[i].next_to_watch;
985 eop_desc = E1000_TX_DESC(*tx_ring, eop);
987 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
988 (count < tx_ring->count)) {
989 bool cleaned = false;
990 for (; !cleaned; count++) {
991 tx_desc = E1000_TX_DESC(*tx_ring, i);
992 buffer_info = &tx_ring->buffer_info[i];
993 cleaned = (i == eop);
996 total_tx_packets += buffer_info->segs;
997 total_tx_bytes += buffer_info->bytecount;
1000 e1000_put_txbuf(adapter, buffer_info);
1001 tx_desc->upper.data = 0;
1004 if (i == tx_ring->count)
1008 if (i == tx_ring->next_to_use)
1010 eop = tx_ring->buffer_info[i].next_to_watch;
1011 eop_desc = E1000_TX_DESC(*tx_ring, eop);
1014 tx_ring->next_to_clean = i;
1016 #define TX_WAKE_THRESHOLD 32
1017 if (count && netif_carrier_ok(netdev) &&
1018 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
1019 /* Make sure that anybody stopping the queue after this
1020 * sees the new next_to_clean.
1024 if (netif_queue_stopped(netdev) &&
1025 !(test_bit(__E1000_DOWN, &adapter->state))) {
1026 netif_wake_queue(netdev);
1027 ++adapter->restart_queue;
1031 if (adapter->detect_tx_hung) {
1033 * Detect a transmit hang in hardware, this serializes the
1034 * check with the clearing of time_stamp and movement of i
1036 adapter->detect_tx_hung = 0;
1037 if (tx_ring->buffer_info[i].time_stamp &&
1038 time_after(jiffies, tx_ring->buffer_info[i].time_stamp
1039 + (adapter->tx_timeout_factor * HZ)) &&
1040 !(er32(STATUS) & E1000_STATUS_TXOFF)) {
1041 schedule_work(&adapter->print_hang_task);
1042 netif_stop_queue(netdev);
1045 adapter->total_tx_bytes += total_tx_bytes;
1046 adapter->total_tx_packets += total_tx_packets;
1047 netdev->stats.tx_bytes += total_tx_bytes;
1048 netdev->stats.tx_packets += total_tx_packets;
1049 return (count < tx_ring->count);
1053 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
1054 * @adapter: board private structure
1056 * the return value indicates whether actual cleaning was done, there
1057 * is no guarantee that everything was cleaned
1059 static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
1060 int *work_done, int work_to_do)
1062 struct e1000_hw *hw = &adapter->hw;
1063 union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
1064 struct net_device *netdev = adapter->netdev;
1065 struct pci_dev *pdev = adapter->pdev;
1066 struct e1000_ring *rx_ring = adapter->rx_ring;
1067 struct e1000_buffer *buffer_info, *next_buffer;
1068 struct e1000_ps_page *ps_page;
1069 struct sk_buff *skb;
1071 u32 length, staterr;
1072 int cleaned_count = 0;
1074 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
1076 i = rx_ring->next_to_clean;
1077 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
1078 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1079 buffer_info = &rx_ring->buffer_info[i];
1081 while (staterr & E1000_RXD_STAT_DD) {
1082 if (*work_done >= work_to_do)
1085 skb = buffer_info->skb;
1087 /* in the packet split case this is header only */
1088 prefetch(skb->data - NET_IP_ALIGN);
1091 if (i == rx_ring->count)
1093 next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
1096 next_buffer = &rx_ring->buffer_info[i];
1100 dma_unmap_single(&pdev->dev, buffer_info->dma,
1101 adapter->rx_ps_bsize0,
1103 buffer_info->dma = 0;
1105 /* see !EOP comment in other rx routine */
1106 if (!(staterr & E1000_RXD_STAT_EOP))
1107 adapter->flags2 |= FLAG2_IS_DISCARDING;
1109 if (adapter->flags2 & FLAG2_IS_DISCARDING) {
1110 e_dbg("Packet Split buffers didn't pick up the full "
1112 dev_kfree_skb_irq(skb);
1113 if (staterr & E1000_RXD_STAT_EOP)
1114 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
1118 if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
1119 dev_kfree_skb_irq(skb);
1123 length = le16_to_cpu(rx_desc->wb.middle.length0);
1126 e_dbg("Last part of the packet spanning multiple "
1128 dev_kfree_skb_irq(skb);
1133 skb_put(skb, length);
1137 * this looks ugly, but it seems compiler issues make it
1138 * more efficient than reusing j
1140 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
1143 * page alloc/put takes too long and effects small packet
1144 * throughput, so unsplit small packets and save the alloc/put
1145 * only valid in softirq (napi) context to call kmap_*
1147 if (l1 && (l1 <= copybreak) &&
1148 ((length + l1) <= adapter->rx_ps_bsize0)) {
1151 ps_page = &buffer_info->ps_pages[0];
1154 * there is no documentation about how to call
1155 * kmap_atomic, so we can't hold the mapping
1158 dma_sync_single_for_cpu(&pdev->dev, ps_page->dma,
1159 PAGE_SIZE, DMA_FROM_DEVICE);
1160 vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ);
1161 memcpy(skb_tail_pointer(skb), vaddr, l1);
1162 kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
1163 dma_sync_single_for_device(&pdev->dev, ps_page->dma,
1164 PAGE_SIZE, DMA_FROM_DEVICE);
1166 /* remove the CRC */
1167 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING))
1175 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
1176 length = le16_to_cpu(rx_desc->wb.upper.length[j]);
1180 ps_page = &buffer_info->ps_pages[j];
1181 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
1184 skb_fill_page_desc(skb, j, ps_page->page, 0, length);
1185 ps_page->page = NULL;
1187 skb->data_len += length;
1188 skb->truesize += length;
1191 /* strip the ethernet crc, problem is we're using pages now so
1192 * this whole operation can get a little cpu intensive
1194 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING))
1195 pskb_trim(skb, skb->len - 4);
1198 total_rx_bytes += skb->len;
1201 e1000_rx_checksum(adapter, staterr, le16_to_cpu(
1202 rx_desc->wb.lower.hi_dword.csum_ip.csum), skb);
1204 if (rx_desc->wb.upper.header_status &
1205 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))
1206 adapter->rx_hdr_split++;
1208 e1000_receive_skb(adapter, netdev, skb,
1209 staterr, rx_desc->wb.middle.vlan);
1212 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
1213 buffer_info->skb = NULL;
1215 /* return some buffers to hardware, one at a time is too slow */
1216 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
1217 adapter->alloc_rx_buf(adapter, cleaned_count);
1221 /* use prefetched values */
1223 buffer_info = next_buffer;
1225 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1227 rx_ring->next_to_clean = i;
1229 cleaned_count = e1000_desc_unused(rx_ring);
1231 adapter->alloc_rx_buf(adapter, cleaned_count);
1233 adapter->total_rx_bytes += total_rx_bytes;
1234 adapter->total_rx_packets += total_rx_packets;
1235 netdev->stats.rx_bytes += total_rx_bytes;
1236 netdev->stats.rx_packets += total_rx_packets;
1241 * e1000_consume_page - helper function
1243 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
1248 skb->data_len += length;
1249 skb->truesize += length;
1253 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1254 * @adapter: board private structure
1256 * the return value indicates whether actual cleaning was done, there
1257 * is no guarantee that everything was cleaned
1260 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
1261 int *work_done, int work_to_do)
1263 struct net_device *netdev = adapter->netdev;
1264 struct pci_dev *pdev = adapter->pdev;
1265 struct e1000_ring *rx_ring = adapter->rx_ring;
1266 struct e1000_rx_desc *rx_desc, *next_rxd;
1267 struct e1000_buffer *buffer_info, *next_buffer;
1270 int cleaned_count = 0;
1271 bool cleaned = false;
1272 unsigned int total_rx_bytes=0, total_rx_packets=0;
1274 i = rx_ring->next_to_clean;
1275 rx_desc = E1000_RX_DESC(*rx_ring, i);
1276 buffer_info = &rx_ring->buffer_info[i];
1278 while (rx_desc->status & E1000_RXD_STAT_DD) {
1279 struct sk_buff *skb;
1282 if (*work_done >= work_to_do)
1286 status = rx_desc->status;
1287 skb = buffer_info->skb;
1288 buffer_info->skb = NULL;
1291 if (i == rx_ring->count)
1293 next_rxd = E1000_RX_DESC(*rx_ring, i);
1296 next_buffer = &rx_ring->buffer_info[i];
1300 dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE,
1302 buffer_info->dma = 0;
1304 length = le16_to_cpu(rx_desc->length);
1306 /* errors is only valid for DD + EOP descriptors */
1307 if (unlikely((status & E1000_RXD_STAT_EOP) &&
1308 (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) {
1309 /* recycle both page and skb */
1310 buffer_info->skb = skb;
1311 /* an error means any chain goes out the window
1313 if (rx_ring->rx_skb_top)
1314 dev_kfree_skb(rx_ring->rx_skb_top);
1315 rx_ring->rx_skb_top = NULL;
1319 #define rxtop rx_ring->rx_skb_top
1320 if (!(status & E1000_RXD_STAT_EOP)) {
1321 /* this descriptor is only the beginning (or middle) */
1323 /* this is the beginning of a chain */
1325 skb_fill_page_desc(rxtop, 0, buffer_info->page,
1328 /* this is the middle of a chain */
1329 skb_fill_page_desc(rxtop,
1330 skb_shinfo(rxtop)->nr_frags,
1331 buffer_info->page, 0, length);
1332 /* re-use the skb, only consumed the page */
1333 buffer_info->skb = skb;
1335 e1000_consume_page(buffer_info, rxtop, length);
1339 /* end of the chain */
1340 skb_fill_page_desc(rxtop,
1341 skb_shinfo(rxtop)->nr_frags,
1342 buffer_info->page, 0, length);
1343 /* re-use the current skb, we only consumed the
1345 buffer_info->skb = skb;
1348 e1000_consume_page(buffer_info, skb, length);
1350 /* no chain, got EOP, this buf is the packet
1351 * copybreak to save the put_page/alloc_page */
1352 if (length <= copybreak &&
1353 skb_tailroom(skb) >= length) {
1355 vaddr = kmap_atomic(buffer_info->page,
1356 KM_SKB_DATA_SOFTIRQ);
1357 memcpy(skb_tail_pointer(skb), vaddr,
1359 kunmap_atomic(vaddr,
1360 KM_SKB_DATA_SOFTIRQ);
1361 /* re-use the page, so don't erase
1362 * buffer_info->page */
1363 skb_put(skb, length);
1365 skb_fill_page_desc(skb, 0,
1366 buffer_info->page, 0,
1368 e1000_consume_page(buffer_info, skb,
1374 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1375 e1000_rx_checksum(adapter,
1377 ((u32)(rx_desc->errors) << 24),
1378 le16_to_cpu(rx_desc->csum), skb);
1380 /* probably a little skewed due to removing CRC */
1381 total_rx_bytes += skb->len;
1384 /* eth type trans needs skb->data to point to something */
1385 if (!pskb_may_pull(skb, ETH_HLEN)) {
1386 e_err("pskb_may_pull failed.\n");
1391 e1000_receive_skb(adapter, netdev, skb, status,
1395 rx_desc->status = 0;
1397 /* return some buffers to hardware, one at a time is too slow */
1398 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
1399 adapter->alloc_rx_buf(adapter, cleaned_count);
1403 /* use prefetched values */
1405 buffer_info = next_buffer;
1407 rx_ring->next_to_clean = i;
1409 cleaned_count = e1000_desc_unused(rx_ring);
1411 adapter->alloc_rx_buf(adapter, cleaned_count);
1413 adapter->total_rx_bytes += total_rx_bytes;
1414 adapter->total_rx_packets += total_rx_packets;
1415 netdev->stats.rx_bytes += total_rx_bytes;
1416 netdev->stats.rx_packets += total_rx_packets;
1421 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1422 * @adapter: board private structure
1424 static void e1000_clean_rx_ring(struct e1000_adapter *adapter)
1426 struct e1000_ring *rx_ring = adapter->rx_ring;
1427 struct e1000_buffer *buffer_info;
1428 struct e1000_ps_page *ps_page;
1429 struct pci_dev *pdev = adapter->pdev;
1432 /* Free all the Rx ring sk_buffs */
1433 for (i = 0; i < rx_ring->count; i++) {
1434 buffer_info = &rx_ring->buffer_info[i];
1435 if (buffer_info->dma) {
1436 if (adapter->clean_rx == e1000_clean_rx_irq)
1437 dma_unmap_single(&pdev->dev, buffer_info->dma,
1438 adapter->rx_buffer_len,
1440 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq)
1441 dma_unmap_page(&pdev->dev, buffer_info->dma,
1444 else if (adapter->clean_rx == e1000_clean_rx_irq_ps)
1445 dma_unmap_single(&pdev->dev, buffer_info->dma,
1446 adapter->rx_ps_bsize0,
1448 buffer_info->dma = 0;
1451 if (buffer_info->page) {
1452 put_page(buffer_info->page);
1453 buffer_info->page = NULL;
1456 if (buffer_info->skb) {
1457 dev_kfree_skb(buffer_info->skb);
1458 buffer_info->skb = NULL;
1461 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
1462 ps_page = &buffer_info->ps_pages[j];
1465 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
1468 put_page(ps_page->page);
1469 ps_page->page = NULL;
1473 /* there also may be some cached data from a chained receive */
1474 if (rx_ring->rx_skb_top) {
1475 dev_kfree_skb(rx_ring->rx_skb_top);
1476 rx_ring->rx_skb_top = NULL;
1479 /* Zero out the descriptor ring */
1480 memset(rx_ring->desc, 0, rx_ring->size);
1482 rx_ring->next_to_clean = 0;
1483 rx_ring->next_to_use = 0;
1484 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
1486 writel(0, adapter->hw.hw_addr + rx_ring->head);
1487 writel(0, adapter->hw.hw_addr + rx_ring->tail);
1490 static void e1000e_downshift_workaround(struct work_struct *work)
1492 struct e1000_adapter *adapter = container_of(work,
1493 struct e1000_adapter, downshift_task);
1495 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw);
1499 * e1000_intr_msi - Interrupt Handler
1500 * @irq: interrupt number
1501 * @data: pointer to a network interface device structure
1503 static irqreturn_t e1000_intr_msi(int irq, void *data)
1505 struct net_device *netdev = data;
1506 struct e1000_adapter *adapter = netdev_priv(netdev);
1507 struct e1000_hw *hw = &adapter->hw;
1508 u32 icr = er32(ICR);
1511 * read ICR disables interrupts using IAM
1514 if (icr & E1000_ICR_LSC) {
1515 hw->mac.get_link_status = 1;
1517 * ICH8 workaround-- Call gig speed drop workaround on cable
1518 * disconnect (LSC) before accessing any PHY registers
1520 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1521 (!(er32(STATUS) & E1000_STATUS_LU)))
1522 schedule_work(&adapter->downshift_task);
1525 * 80003ES2LAN workaround-- For packet buffer work-around on
1526 * link down event; disable receives here in the ISR and reset
1527 * adapter in watchdog
1529 if (netif_carrier_ok(netdev) &&
1530 adapter->flags & FLAG_RX_NEEDS_RESTART) {
1531 /* disable receives */
1532 u32 rctl = er32(RCTL);
1533 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1534 adapter->flags |= FLAG_RX_RESTART_NOW;
1536 /* guard against interrupt when we're going down */
1537 if (!test_bit(__E1000_DOWN, &adapter->state))
1538 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1541 if (napi_schedule_prep(&adapter->napi)) {
1542 adapter->total_tx_bytes = 0;
1543 adapter->total_tx_packets = 0;
1544 adapter->total_rx_bytes = 0;
1545 adapter->total_rx_packets = 0;
1546 __napi_schedule(&adapter->napi);
1553 * e1000_intr - Interrupt Handler
1554 * @irq: interrupt number
1555 * @data: pointer to a network interface device structure
1557 static irqreturn_t e1000_intr(int irq, void *data)
1559 struct net_device *netdev = data;
1560 struct e1000_adapter *adapter = netdev_priv(netdev);
1561 struct e1000_hw *hw = &adapter->hw;
1562 u32 rctl, icr = er32(ICR);
1564 if (!icr || test_bit(__E1000_DOWN, &adapter->state))
1565 return IRQ_NONE; /* Not our interrupt */
1568 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1569 * not set, then the adapter didn't send an interrupt
1571 if (!(icr & E1000_ICR_INT_ASSERTED))
1575 * Interrupt Auto-Mask...upon reading ICR,
1576 * interrupts are masked. No need for the
1580 if (icr & E1000_ICR_LSC) {
1581 hw->mac.get_link_status = 1;
1583 * ICH8 workaround-- Call gig speed drop workaround on cable
1584 * disconnect (LSC) before accessing any PHY registers
1586 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1587 (!(er32(STATUS) & E1000_STATUS_LU)))
1588 schedule_work(&adapter->downshift_task);
1591 * 80003ES2LAN workaround--
1592 * For packet buffer work-around on link down event;
1593 * disable receives here in the ISR and
1594 * reset adapter in watchdog
1596 if (netif_carrier_ok(netdev) &&
1597 (adapter->flags & FLAG_RX_NEEDS_RESTART)) {
1598 /* disable receives */
1600 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1601 adapter->flags |= FLAG_RX_RESTART_NOW;
1603 /* guard against interrupt when we're going down */
1604 if (!test_bit(__E1000_DOWN, &adapter->state))
1605 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1608 if (napi_schedule_prep(&adapter->napi)) {
1609 adapter->total_tx_bytes = 0;
1610 adapter->total_tx_packets = 0;
1611 adapter->total_rx_bytes = 0;
1612 adapter->total_rx_packets = 0;
1613 __napi_schedule(&adapter->napi);
1619 static irqreturn_t e1000_msix_other(int irq, void *data)
1621 struct net_device *netdev = data;
1622 struct e1000_adapter *adapter = netdev_priv(netdev);
1623 struct e1000_hw *hw = &adapter->hw;
1624 u32 icr = er32(ICR);
1626 if (!(icr & E1000_ICR_INT_ASSERTED)) {
1627 if (!test_bit(__E1000_DOWN, &adapter->state))
1628 ew32(IMS, E1000_IMS_OTHER);
1632 if (icr & adapter->eiac_mask)
1633 ew32(ICS, (icr & adapter->eiac_mask));
1635 if (icr & E1000_ICR_OTHER) {
1636 if (!(icr & E1000_ICR_LSC))
1637 goto no_link_interrupt;
1638 hw->mac.get_link_status = 1;
1639 /* guard against interrupt when we're going down */
1640 if (!test_bit(__E1000_DOWN, &adapter->state))
1641 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1645 if (!test_bit(__E1000_DOWN, &adapter->state))
1646 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER);
1652 static irqreturn_t e1000_intr_msix_tx(int irq, void *data)
1654 struct net_device *netdev = data;
1655 struct e1000_adapter *adapter = netdev_priv(netdev);
1656 struct e1000_hw *hw = &adapter->hw;
1657 struct e1000_ring *tx_ring = adapter->tx_ring;
1660 adapter->total_tx_bytes = 0;
1661 adapter->total_tx_packets = 0;
1663 if (!e1000_clean_tx_irq(adapter))
1664 /* Ring was not completely cleaned, so fire another interrupt */
1665 ew32(ICS, tx_ring->ims_val);
1670 static irqreturn_t e1000_intr_msix_rx(int irq, void *data)
1672 struct net_device *netdev = data;
1673 struct e1000_adapter *adapter = netdev_priv(netdev);
1675 /* Write the ITR value calculated at the end of the
1676 * previous interrupt.
1678 if (adapter->rx_ring->set_itr) {
1679 writel(1000000000 / (adapter->rx_ring->itr_val * 256),
1680 adapter->hw.hw_addr + adapter->rx_ring->itr_register);
1681 adapter->rx_ring->set_itr = 0;
1684 if (napi_schedule_prep(&adapter->napi)) {
1685 adapter->total_rx_bytes = 0;
1686 adapter->total_rx_packets = 0;
1687 __napi_schedule(&adapter->napi);
1693 * e1000_configure_msix - Configure MSI-X hardware
1695 * e1000_configure_msix sets up the hardware to properly
1696 * generate MSI-X interrupts.
1698 static void e1000_configure_msix(struct e1000_adapter *adapter)
1700 struct e1000_hw *hw = &adapter->hw;
1701 struct e1000_ring *rx_ring = adapter->rx_ring;
1702 struct e1000_ring *tx_ring = adapter->tx_ring;
1704 u32 ctrl_ext, ivar = 0;
1706 adapter->eiac_mask = 0;
1708 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1709 if (hw->mac.type == e1000_82574) {
1710 u32 rfctl = er32(RFCTL);
1711 rfctl |= E1000_RFCTL_ACK_DIS;
1715 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1716 /* Configure Rx vector */
1717 rx_ring->ims_val = E1000_IMS_RXQ0;
1718 adapter->eiac_mask |= rx_ring->ims_val;
1719 if (rx_ring->itr_val)
1720 writel(1000000000 / (rx_ring->itr_val * 256),
1721 hw->hw_addr + rx_ring->itr_register);
1723 writel(1, hw->hw_addr + rx_ring->itr_register);
1724 ivar = E1000_IVAR_INT_ALLOC_VALID | vector;
1726 /* Configure Tx vector */
1727 tx_ring->ims_val = E1000_IMS_TXQ0;
1729 if (tx_ring->itr_val)
1730 writel(1000000000 / (tx_ring->itr_val * 256),
1731 hw->hw_addr + tx_ring->itr_register);
1733 writel(1, hw->hw_addr + tx_ring->itr_register);
1734 adapter->eiac_mask |= tx_ring->ims_val;
1735 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8);
1737 /* set vector for Other Causes, e.g. link changes */
1739 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16);
1740 if (rx_ring->itr_val)
1741 writel(1000000000 / (rx_ring->itr_val * 256),
1742 hw->hw_addr + E1000_EITR_82574(vector));
1744 writel(1, hw->hw_addr + E1000_EITR_82574(vector));
1746 /* Cause Tx interrupts on every write back */
1751 /* enable MSI-X PBA support */
1752 ctrl_ext = er32(CTRL_EXT);
1753 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR;
1755 /* Auto-Mask Other interrupts upon ICR read */
1756 #define E1000_EIAC_MASK_82574 0x01F00000
1757 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER);
1758 ctrl_ext |= E1000_CTRL_EXT_EIAME;
1759 ew32(CTRL_EXT, ctrl_ext);
1763 void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter)
1765 if (adapter->msix_entries) {
1766 pci_disable_msix(adapter->pdev);
1767 kfree(adapter->msix_entries);
1768 adapter->msix_entries = NULL;
1769 } else if (adapter->flags & FLAG_MSI_ENABLED) {
1770 pci_disable_msi(adapter->pdev);
1771 adapter->flags &= ~FLAG_MSI_ENABLED;
1776 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1778 * Attempt to configure interrupts using the best available
1779 * capabilities of the hardware and kernel.
1781 void e1000e_set_interrupt_capability(struct e1000_adapter *adapter)
1787 switch (adapter->int_mode) {
1788 case E1000E_INT_MODE_MSIX:
1789 if (adapter->flags & FLAG_HAS_MSIX) {
1790 numvecs = 3; /* RxQ0, TxQ0 and other */
1791 adapter->msix_entries = kcalloc(numvecs,
1792 sizeof(struct msix_entry),
1794 if (adapter->msix_entries) {
1795 for (i = 0; i < numvecs; i++)
1796 adapter->msix_entries[i].entry = i;
1798 err = pci_enable_msix(adapter->pdev,
1799 adapter->msix_entries,
1804 /* MSI-X failed, so fall through and try MSI */
1805 e_err("Failed to initialize MSI-X interrupts. "
1806 "Falling back to MSI interrupts.\n");
1807 e1000e_reset_interrupt_capability(adapter);
1809 adapter->int_mode = E1000E_INT_MODE_MSI;
1811 case E1000E_INT_MODE_MSI:
1812 if (!pci_enable_msi(adapter->pdev)) {
1813 adapter->flags |= FLAG_MSI_ENABLED;
1815 adapter->int_mode = E1000E_INT_MODE_LEGACY;
1816 e_err("Failed to initialize MSI interrupts. Falling "
1817 "back to legacy interrupts.\n");
1820 case E1000E_INT_MODE_LEGACY:
1821 /* Don't do anything; this is the system default */
1827 * e1000_request_msix - Initialize MSI-X interrupts
1829 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1832 static int e1000_request_msix(struct e1000_adapter *adapter)
1834 struct net_device *netdev = adapter->netdev;
1835 int err = 0, vector = 0;
1837 if (strlen(netdev->name) < (IFNAMSIZ - 5))
1838 sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name);
1840 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
1841 err = request_irq(adapter->msix_entries[vector].vector,
1842 e1000_intr_msix_rx, 0, adapter->rx_ring->name,
1846 adapter->rx_ring->itr_register = E1000_EITR_82574(vector);
1847 adapter->rx_ring->itr_val = adapter->itr;
1850 if (strlen(netdev->name) < (IFNAMSIZ - 5))
1851 sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name);
1853 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
1854 err = request_irq(adapter->msix_entries[vector].vector,
1855 e1000_intr_msix_tx, 0, adapter->tx_ring->name,
1859 adapter->tx_ring->itr_register = E1000_EITR_82574(vector);
1860 adapter->tx_ring->itr_val = adapter->itr;
1863 err = request_irq(adapter->msix_entries[vector].vector,
1864 e1000_msix_other, 0, netdev->name, netdev);
1868 e1000_configure_msix(adapter);
1875 * e1000_request_irq - initialize interrupts
1877 * Attempts to configure interrupts using the best available
1878 * capabilities of the hardware and kernel.
1880 static int e1000_request_irq(struct e1000_adapter *adapter)
1882 struct net_device *netdev = adapter->netdev;
1885 if (adapter->msix_entries) {
1886 err = e1000_request_msix(adapter);
1889 /* fall back to MSI */
1890 e1000e_reset_interrupt_capability(adapter);
1891 adapter->int_mode = E1000E_INT_MODE_MSI;
1892 e1000e_set_interrupt_capability(adapter);
1894 if (adapter->flags & FLAG_MSI_ENABLED) {
1895 err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0,
1896 netdev->name, netdev);
1900 /* fall back to legacy interrupt */
1901 e1000e_reset_interrupt_capability(adapter);
1902 adapter->int_mode = E1000E_INT_MODE_LEGACY;
1905 err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED,
1906 netdev->name, netdev);
1908 e_err("Unable to allocate interrupt, Error: %d\n", err);
1913 static void e1000_free_irq(struct e1000_adapter *adapter)
1915 struct net_device *netdev = adapter->netdev;
1917 if (adapter->msix_entries) {
1920 free_irq(adapter->msix_entries[vector].vector, netdev);
1923 free_irq(adapter->msix_entries[vector].vector, netdev);
1926 /* Other Causes interrupt vector */
1927 free_irq(adapter->msix_entries[vector].vector, netdev);
1931 free_irq(adapter->pdev->irq, netdev);
1935 * e1000_irq_disable - Mask off interrupt generation on the NIC
1937 static void e1000_irq_disable(struct e1000_adapter *adapter)
1939 struct e1000_hw *hw = &adapter->hw;
1942 if (adapter->msix_entries)
1943 ew32(EIAC_82574, 0);
1945 synchronize_irq(adapter->pdev->irq);
1949 * e1000_irq_enable - Enable default interrupt generation settings
1951 static void e1000_irq_enable(struct e1000_adapter *adapter)
1953 struct e1000_hw *hw = &adapter->hw;
1955 if (adapter->msix_entries) {
1956 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574);
1957 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC);
1959 ew32(IMS, IMS_ENABLE_MASK);
1965 * e1000_get_hw_control - get control of the h/w from f/w
1966 * @adapter: address of board private structure
1968 * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1969 * For ASF and Pass Through versions of f/w this means that
1970 * the driver is loaded. For AMT version (only with 82573)
1971 * of the f/w this means that the network i/f is open.
1973 static void e1000_get_hw_control(struct e1000_adapter *adapter)
1975 struct e1000_hw *hw = &adapter->hw;
1979 /* Let firmware know the driver has taken over */
1980 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
1982 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
1983 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
1984 ctrl_ext = er32(CTRL_EXT);
1985 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
1990 * e1000_release_hw_control - release control of the h/w to f/w
1991 * @adapter: address of board private structure
1993 * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1994 * For ASF and Pass Through versions of f/w this means that the
1995 * driver is no longer loaded. For AMT version (only with 82573) i
1996 * of the f/w this means that the network i/f is closed.
1999 static void e1000_release_hw_control(struct e1000_adapter *adapter)
2001 struct e1000_hw *hw = &adapter->hw;
2005 /* Let firmware taken over control of h/w */
2006 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
2008 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
2009 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
2010 ctrl_ext = er32(CTRL_EXT);
2011 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
2016 * @e1000_alloc_ring - allocate memory for a ring structure
2018 static int e1000_alloc_ring_dma(struct e1000_adapter *adapter,
2019 struct e1000_ring *ring)
2021 struct pci_dev *pdev = adapter->pdev;
2023 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma,
2032 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
2033 * @adapter: board private structure
2035 * Return 0 on success, negative on failure
2037 int e1000e_setup_tx_resources(struct e1000_adapter *adapter)
2039 struct e1000_ring *tx_ring = adapter->tx_ring;
2040 int err = -ENOMEM, size;
2042 size = sizeof(struct e1000_buffer) * tx_ring->count;
2043 tx_ring->buffer_info = vmalloc(size);
2044 if (!tx_ring->buffer_info)
2046 memset(tx_ring->buffer_info, 0, size);
2048 /* round up to nearest 4K */
2049 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
2050 tx_ring->size = ALIGN(tx_ring->size, 4096);
2052 err = e1000_alloc_ring_dma(adapter, tx_ring);
2056 tx_ring->next_to_use = 0;
2057 tx_ring->next_to_clean = 0;
2061 vfree(tx_ring->buffer_info);
2062 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2067 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
2068 * @adapter: board private structure
2070 * Returns 0 on success, negative on failure
2072 int e1000e_setup_rx_resources(struct e1000_adapter *adapter)
2074 struct e1000_ring *rx_ring = adapter->rx_ring;
2075 struct e1000_buffer *buffer_info;
2076 int i, size, desc_len, err = -ENOMEM;
2078 size = sizeof(struct e1000_buffer) * rx_ring->count;
2079 rx_ring->buffer_info = vmalloc(size);
2080 if (!rx_ring->buffer_info)
2082 memset(rx_ring->buffer_info, 0, size);
2084 for (i = 0; i < rx_ring->count; i++) {
2085 buffer_info = &rx_ring->buffer_info[i];
2086 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS,
2087 sizeof(struct e1000_ps_page),
2089 if (!buffer_info->ps_pages)
2093 desc_len = sizeof(union e1000_rx_desc_packet_split);
2095 /* Round up to nearest 4K */
2096 rx_ring->size = rx_ring->count * desc_len;
2097 rx_ring->size = ALIGN(rx_ring->size, 4096);
2099 err = e1000_alloc_ring_dma(adapter, rx_ring);
2103 rx_ring->next_to_clean = 0;
2104 rx_ring->next_to_use = 0;
2105 rx_ring->rx_skb_top = NULL;
2110 for (i = 0; i < rx_ring->count; i++) {
2111 buffer_info = &rx_ring->buffer_info[i];
2112 kfree(buffer_info->ps_pages);
2115 vfree(rx_ring->buffer_info);
2116 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2121 * e1000_clean_tx_ring - Free Tx Buffers
2122 * @adapter: board private structure
2124 static void e1000_clean_tx_ring(struct e1000_adapter *adapter)
2126 struct e1000_ring *tx_ring = adapter->tx_ring;
2127 struct e1000_buffer *buffer_info;
2131 for (i = 0; i < tx_ring->count; i++) {
2132 buffer_info = &tx_ring->buffer_info[i];
2133 e1000_put_txbuf(adapter, buffer_info);
2136 size = sizeof(struct e1000_buffer) * tx_ring->count;
2137 memset(tx_ring->buffer_info, 0, size);
2139 memset(tx_ring->desc, 0, tx_ring->size);
2141 tx_ring->next_to_use = 0;
2142 tx_ring->next_to_clean = 0;
2144 writel(0, adapter->hw.hw_addr + tx_ring->head);
2145 writel(0, adapter->hw.hw_addr + tx_ring->tail);
2149 * e1000e_free_tx_resources - Free Tx Resources per Queue
2150 * @adapter: board private structure
2152 * Free all transmit software resources
2154 void e1000e_free_tx_resources(struct e1000_adapter *adapter)
2156 struct pci_dev *pdev = adapter->pdev;
2157 struct e1000_ring *tx_ring = adapter->tx_ring;
2159 e1000_clean_tx_ring(adapter);
2161 vfree(tx_ring->buffer_info);
2162 tx_ring->buffer_info = NULL;
2164 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
2166 tx_ring->desc = NULL;
2170 * e1000e_free_rx_resources - Free Rx Resources
2171 * @adapter: board private structure
2173 * Free all receive software resources
2176 void e1000e_free_rx_resources(struct e1000_adapter *adapter)
2178 struct pci_dev *pdev = adapter->pdev;
2179 struct e1000_ring *rx_ring = adapter->rx_ring;
2182 e1000_clean_rx_ring(adapter);
2184 for (i = 0; i < rx_ring->count; i++) {
2185 kfree(rx_ring->buffer_info[i].ps_pages);
2188 vfree(rx_ring->buffer_info);
2189 rx_ring->buffer_info = NULL;
2191 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
2193 rx_ring->desc = NULL;
2197 * e1000_update_itr - update the dynamic ITR value based on statistics
2198 * @adapter: pointer to adapter
2199 * @itr_setting: current adapter->itr
2200 * @packets: the number of packets during this measurement interval
2201 * @bytes: the number of bytes during this measurement interval
2203 * Stores a new ITR value based on packets and byte
2204 * counts during the last interrupt. The advantage of per interrupt
2205 * computation is faster updates and more accurate ITR for the current
2206 * traffic pattern. Constants in this function were computed
2207 * based on theoretical maximum wire speed and thresholds were set based
2208 * on testing data as well as attempting to minimize response time
2209 * while increasing bulk throughput. This functionality is controlled
2210 * by the InterruptThrottleRate module parameter.
2212 static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
2213 u16 itr_setting, int packets,
2216 unsigned int retval = itr_setting;
2219 goto update_itr_done;
2221 switch (itr_setting) {
2222 case lowest_latency:
2223 /* handle TSO and jumbo frames */
2224 if (bytes/packets > 8000)
2225 retval = bulk_latency;
2226 else if ((packets < 5) && (bytes > 512)) {
2227 retval = low_latency;
2230 case low_latency: /* 50 usec aka 20000 ints/s */
2231 if (bytes > 10000) {
2232 /* this if handles the TSO accounting */
2233 if (bytes/packets > 8000) {
2234 retval = bulk_latency;
2235 } else if ((packets < 10) || ((bytes/packets) > 1200)) {
2236 retval = bulk_latency;
2237 } else if ((packets > 35)) {
2238 retval = lowest_latency;
2240 } else if (bytes/packets > 2000) {
2241 retval = bulk_latency;
2242 } else if (packets <= 2 && bytes < 512) {
2243 retval = lowest_latency;
2246 case bulk_latency: /* 250 usec aka 4000 ints/s */
2247 if (bytes > 25000) {
2249 retval = low_latency;
2251 } else if (bytes < 6000) {
2252 retval = low_latency;
2261 static void e1000_set_itr(struct e1000_adapter *adapter)
2263 struct e1000_hw *hw = &adapter->hw;
2265 u32 new_itr = adapter->itr;
2267 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2268 if (adapter->link_speed != SPEED_1000) {
2274 adapter->tx_itr = e1000_update_itr(adapter,
2276 adapter->total_tx_packets,
2277 adapter->total_tx_bytes);
2278 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2279 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
2280 adapter->tx_itr = low_latency;
2282 adapter->rx_itr = e1000_update_itr(adapter,
2284 adapter->total_rx_packets,
2285 adapter->total_rx_bytes);
2286 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2287 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
2288 adapter->rx_itr = low_latency;
2290 current_itr = max(adapter->rx_itr, adapter->tx_itr);
2292 switch (current_itr) {
2293 /* counts and packets in update_itr are dependent on these numbers */
2294 case lowest_latency:
2298 new_itr = 20000; /* aka hwitr = ~200 */
2308 if (new_itr != adapter->itr) {
2310 * this attempts to bias the interrupt rate towards Bulk
2311 * by adding intermediate steps when interrupt rate is
2314 new_itr = new_itr > adapter->itr ?
2315 min(adapter->itr + (new_itr >> 2), new_itr) :
2317 adapter->itr = new_itr;
2318 adapter->rx_ring->itr_val = new_itr;
2319 if (adapter->msix_entries)
2320 adapter->rx_ring->set_itr = 1;
2322 ew32(ITR, 1000000000 / (new_itr * 256));
2327 * e1000_alloc_queues - Allocate memory for all rings
2328 * @adapter: board private structure to initialize
2330 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter)
2332 adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
2333 if (!adapter->tx_ring)
2336 adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
2337 if (!adapter->rx_ring)
2342 e_err("Unable to allocate memory for queues\n");
2343 kfree(adapter->rx_ring);
2344 kfree(adapter->tx_ring);
2349 * e1000_clean - NAPI Rx polling callback
2350 * @napi: struct associated with this polling callback
2351 * @budget: amount of packets driver is allowed to process this poll
2353 static int e1000_clean(struct napi_struct *napi, int budget)
2355 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
2356 struct e1000_hw *hw = &adapter->hw;
2357 struct net_device *poll_dev = adapter->netdev;
2358 int tx_cleaned = 1, work_done = 0;
2360 adapter = netdev_priv(poll_dev);
2362 if (adapter->msix_entries &&
2363 !(adapter->rx_ring->ims_val & adapter->tx_ring->ims_val))
2366 tx_cleaned = e1000_clean_tx_irq(adapter);
2369 adapter->clean_rx(adapter, &work_done, budget);
2374 /* If budget not fully consumed, exit the polling mode */
2375 if (work_done < budget) {
2376 if (adapter->itr_setting & 3)
2377 e1000_set_itr(adapter);
2378 napi_complete(napi);
2379 if (!test_bit(__E1000_DOWN, &adapter->state)) {
2380 if (adapter->msix_entries)
2381 ew32(IMS, adapter->rx_ring->ims_val);
2383 e1000_irq_enable(adapter);
2390 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
2392 struct e1000_adapter *adapter = netdev_priv(netdev);
2393 struct e1000_hw *hw = &adapter->hw;
2396 /* don't update vlan cookie if already programmed */
2397 if ((adapter->hw.mng_cookie.status &
2398 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2399 (vid == adapter->mng_vlan_id))
2402 /* add VID to filter table */
2403 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2404 index = (vid >> 5) & 0x7F;
2405 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2406 vfta |= (1 << (vid & 0x1F));
2407 hw->mac.ops.write_vfta(hw, index, vfta);
2411 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
2413 struct e1000_adapter *adapter = netdev_priv(netdev);
2414 struct e1000_hw *hw = &adapter->hw;
2417 if (!test_bit(__E1000_DOWN, &adapter->state))
2418 e1000_irq_disable(adapter);
2419 vlan_group_set_device(adapter->vlgrp, vid, NULL);
2421 if (!test_bit(__E1000_DOWN, &adapter->state))
2422 e1000_irq_enable(adapter);
2424 if ((adapter->hw.mng_cookie.status &
2425 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2426 (vid == adapter->mng_vlan_id)) {
2427 /* release control to f/w */
2428 e1000_release_hw_control(adapter);
2432 /* remove VID from filter table */
2433 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2434 index = (vid >> 5) & 0x7F;
2435 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2436 vfta &= ~(1 << (vid & 0x1F));
2437 hw->mac.ops.write_vfta(hw, index, vfta);
2441 static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
2443 struct net_device *netdev = adapter->netdev;
2444 u16 vid = adapter->hw.mng_cookie.vlan_id;
2445 u16 old_vid = adapter->mng_vlan_id;
2447 if (!adapter->vlgrp)
2450 if (!vlan_group_get_device(adapter->vlgrp, vid)) {
2451 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2452 if (adapter->hw.mng_cookie.status &
2453 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
2454 e1000_vlan_rx_add_vid(netdev, vid);
2455 adapter->mng_vlan_id = vid;
2458 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) &&
2460 !vlan_group_get_device(adapter->vlgrp, old_vid))
2461 e1000_vlan_rx_kill_vid(netdev, old_vid);
2463 adapter->mng_vlan_id = vid;
2468 static void e1000_vlan_rx_register(struct net_device *netdev,
2469 struct vlan_group *grp)
2471 struct e1000_adapter *adapter = netdev_priv(netdev);
2472 struct e1000_hw *hw = &adapter->hw;
2475 if (!test_bit(__E1000_DOWN, &adapter->state))
2476 e1000_irq_disable(adapter);
2477 adapter->vlgrp = grp;
2480 /* enable VLAN tag insert/strip */
2482 ctrl |= E1000_CTRL_VME;
2485 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2486 /* enable VLAN receive filtering */
2488 rctl &= ~E1000_RCTL_CFIEN;
2490 e1000_update_mng_vlan(adapter);
2493 /* disable VLAN tag insert/strip */
2495 ctrl &= ~E1000_CTRL_VME;
2498 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2499 if (adapter->mng_vlan_id !=
2500 (u16)E1000_MNG_VLAN_NONE) {
2501 e1000_vlan_rx_kill_vid(netdev,
2502 adapter->mng_vlan_id);
2503 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2508 if (!test_bit(__E1000_DOWN, &adapter->state))
2509 e1000_irq_enable(adapter);
2512 static void e1000_restore_vlan(struct e1000_adapter *adapter)
2516 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
2518 if (!adapter->vlgrp)
2521 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
2522 if (!vlan_group_get_device(adapter->vlgrp, vid))
2524 e1000_vlan_rx_add_vid(adapter->netdev, vid);
2528 static void e1000_init_manageability_pt(struct e1000_adapter *adapter)
2530 struct e1000_hw *hw = &adapter->hw;
2531 u32 manc, manc2h, mdef, i, j;
2533 if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
2539 * enable receiving management packets to the host. this will probably
2540 * generate destination unreachable messages from the host OS, but
2541 * the packets will be handled on SMBUS
2543 manc |= E1000_MANC_EN_MNG2HOST;
2544 manc2h = er32(MANC2H);
2546 switch (hw->mac.type) {
2548 manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664);
2553 * Check if IPMI pass-through decision filter already exists;
2556 for (i = 0, j = 0; i < 8; i++) {
2557 mdef = er32(MDEF(i));
2559 /* Ignore filters with anything other than IPMI ports */
2560 if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
2563 /* Enable this decision filter in MANC2H */
2570 if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
2573 /* Create new decision filter in an empty filter */
2574 for (i = 0, j = 0; i < 8; i++)
2575 if (er32(MDEF(i)) == 0) {
2576 ew32(MDEF(i), (E1000_MDEF_PORT_623 |
2577 E1000_MDEF_PORT_664));
2584 e_warn("Unable to create IPMI pass-through filter\n");
2588 ew32(MANC2H, manc2h);
2593 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
2594 * @adapter: board private structure
2596 * Configure the Tx unit of the MAC after a reset.
2598 static void e1000_configure_tx(struct e1000_adapter *adapter)
2600 struct e1000_hw *hw = &adapter->hw;
2601 struct e1000_ring *tx_ring = adapter->tx_ring;
2603 u32 tdlen, tctl, tipg, tarc;
2606 /* Setup the HW Tx Head and Tail descriptor pointers */
2607 tdba = tx_ring->dma;
2608 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc);
2609 ew32(TDBAL, (tdba & DMA_BIT_MASK(32)));
2610 ew32(TDBAH, (tdba >> 32));
2614 tx_ring->head = E1000_TDH;
2615 tx_ring->tail = E1000_TDT;
2617 /* Set the default values for the Tx Inter Packet Gap timer */
2618 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; /* 8 */
2619 ipgr1 = DEFAULT_82543_TIPG_IPGR1; /* 8 */
2620 ipgr2 = DEFAULT_82543_TIPG_IPGR2; /* 6 */
2622 if (adapter->flags & FLAG_TIPG_MEDIUM_FOR_80003ESLAN)
2623 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; /* 7 */
2625 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
2626 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
2629 /* Set the Tx Interrupt Delay register */
2630 ew32(TIDV, adapter->tx_int_delay);
2631 /* Tx irq moderation */
2632 ew32(TADV, adapter->tx_abs_int_delay);
2634 /* Program the Transmit Control Register */
2636 tctl &= ~E1000_TCTL_CT;
2637 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
2638 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
2640 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) {
2641 tarc = er32(TARC(0));
2643 * set the speed mode bit, we'll clear it if we're not at
2644 * gigabit link later
2646 #define SPEED_MODE_BIT (1 << 21)
2647 tarc |= SPEED_MODE_BIT;
2648 ew32(TARC(0), tarc);
2651 /* errata: program both queues to unweighted RR */
2652 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) {
2653 tarc = er32(TARC(0));
2655 ew32(TARC(0), tarc);
2656 tarc = er32(TARC(1));
2658 ew32(TARC(1), tarc);
2661 /* Setup Transmit Descriptor Settings for eop descriptor */
2662 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
2664 /* only set IDE if we are delaying interrupts using the timers */
2665 if (adapter->tx_int_delay)
2666 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
2668 /* enable Report Status bit */
2669 adapter->txd_cmd |= E1000_TXD_CMD_RS;
2673 e1000e_config_collision_dist(hw);
2677 * e1000_setup_rctl - configure the receive control registers
2678 * @adapter: Board private structure
2680 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2681 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2682 static void e1000_setup_rctl(struct e1000_adapter *adapter)
2684 struct e1000_hw *hw = &adapter->hw;
2689 /* Program MC offset vector base */
2691 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2692 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
2693 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
2694 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
2696 /* Do not Store bad packets */
2697 rctl &= ~E1000_RCTL_SBP;
2699 /* Enable Long Packet receive */
2700 if (adapter->netdev->mtu <= ETH_DATA_LEN)
2701 rctl &= ~E1000_RCTL_LPE;
2703 rctl |= E1000_RCTL_LPE;
2705 /* Some systems expect that the CRC is included in SMBUS traffic. The
2706 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2707 * host memory when this is enabled
2709 if (adapter->flags2 & FLAG2_CRC_STRIPPING)
2710 rctl |= E1000_RCTL_SECRC;
2712 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
2713 if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) {
2716 e1e_rphy(hw, PHY_REG(770, 26), &phy_data);
2718 phy_data |= (1 << 2);
2719 e1e_wphy(hw, PHY_REG(770, 26), phy_data);
2721 e1e_rphy(hw, 22, &phy_data);
2723 phy_data |= (1 << 14);
2724 e1e_wphy(hw, 0x10, 0x2823);
2725 e1e_wphy(hw, 0x11, 0x0003);
2726 e1e_wphy(hw, 22, phy_data);
2729 /* Workaround Si errata on 82579 - configure jumbo frame flow */
2730 if (hw->mac.type == e1000_pch2lan) {
2733 if (rctl & E1000_RCTL_LPE)
2734 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true);
2736 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false);
2739 /* Setup buffer sizes */
2740 rctl &= ~E1000_RCTL_SZ_4096;
2741 rctl |= E1000_RCTL_BSEX;
2742 switch (adapter->rx_buffer_len) {
2745 rctl |= E1000_RCTL_SZ_2048;
2746 rctl &= ~E1000_RCTL_BSEX;
2749 rctl |= E1000_RCTL_SZ_4096;
2752 rctl |= E1000_RCTL_SZ_8192;
2755 rctl |= E1000_RCTL_SZ_16384;
2760 * 82571 and greater support packet-split where the protocol
2761 * header is placed in skb->data and the packet data is
2762 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2763 * In the case of a non-split, skb->data is linearly filled,
2764 * followed by the page buffers. Therefore, skb->data is
2765 * sized to hold the largest protocol header.
2767 * allocations using alloc_page take too long for regular MTU
2768 * so only enable packet split for jumbo frames
2770 * Using pages when the page size is greater than 16k wastes
2771 * a lot of memory, since we allocate 3 pages at all times
2774 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
2775 if (!(adapter->flags & FLAG_IS_ICH) && (pages <= 3) &&
2776 (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE))
2777 adapter->rx_ps_pages = pages;
2779 adapter->rx_ps_pages = 0;
2781 if (adapter->rx_ps_pages) {
2782 /* Configure extra packet-split registers */
2783 rfctl = er32(RFCTL);
2784 rfctl |= E1000_RFCTL_EXTEN;
2786 * disable packet split support for IPv6 extension headers,
2787 * because some malformed IPv6 headers can hang the Rx
2789 rfctl |= (E1000_RFCTL_IPV6_EX_DIS |
2790 E1000_RFCTL_NEW_IPV6_EXT_DIS);
2794 /* Enable Packet split descriptors */
2795 rctl |= E1000_RCTL_DTYP_PS;
2797 psrctl |= adapter->rx_ps_bsize0 >>
2798 E1000_PSRCTL_BSIZE0_SHIFT;
2800 switch (adapter->rx_ps_pages) {
2802 psrctl |= PAGE_SIZE <<
2803 E1000_PSRCTL_BSIZE3_SHIFT;
2805 psrctl |= PAGE_SIZE <<
2806 E1000_PSRCTL_BSIZE2_SHIFT;
2808 psrctl |= PAGE_SIZE >>
2809 E1000_PSRCTL_BSIZE1_SHIFT;
2813 ew32(PSRCTL, psrctl);
2817 /* just started the receive unit, no need to restart */
2818 adapter->flags &= ~FLAG_RX_RESTART_NOW;
2822 * e1000_configure_rx - Configure Receive Unit after Reset
2823 * @adapter: board private structure
2825 * Configure the Rx unit of the MAC after a reset.
2827 static void e1000_configure_rx(struct e1000_adapter *adapter)
2829 struct e1000_hw *hw = &adapter->hw;
2830 struct e1000_ring *rx_ring = adapter->rx_ring;
2832 u32 rdlen, rctl, rxcsum, ctrl_ext;
2834 if (adapter->rx_ps_pages) {
2835 /* this is a 32 byte descriptor */
2836 rdlen = rx_ring->count *
2837 sizeof(union e1000_rx_desc_packet_split);
2838 adapter->clean_rx = e1000_clean_rx_irq_ps;
2839 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
2840 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) {
2841 rdlen = rx_ring->count * sizeof(struct e1000_rx_desc);
2842 adapter->clean_rx = e1000_clean_jumbo_rx_irq;
2843 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
2845 rdlen = rx_ring->count * sizeof(struct e1000_rx_desc);
2846 adapter->clean_rx = e1000_clean_rx_irq;
2847 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
2850 /* disable receives while setting up the descriptors */
2852 ew32(RCTL, rctl & ~E1000_RCTL_EN);
2856 /* set the Receive Delay Timer Register */
2857 ew32(RDTR, adapter->rx_int_delay);
2859 /* irq moderation */
2860 ew32(RADV, adapter->rx_abs_int_delay);
2861 if (adapter->itr_setting != 0)
2862 ew32(ITR, 1000000000 / (adapter->itr * 256));
2864 ctrl_ext = er32(CTRL_EXT);
2865 /* Auto-Mask interrupts upon ICR access */
2866 ctrl_ext |= E1000_CTRL_EXT_IAME;
2867 ew32(IAM, 0xffffffff);
2868 ew32(CTRL_EXT, ctrl_ext);
2872 * Setup the HW Rx Head and Tail Descriptor Pointers and
2873 * the Base and Length of the Rx Descriptor Ring
2875 rdba = rx_ring->dma;
2876 ew32(RDBAL, (rdba & DMA_BIT_MASK(32)));
2877 ew32(RDBAH, (rdba >> 32));
2881 rx_ring->head = E1000_RDH;
2882 rx_ring->tail = E1000_RDT;
2884 /* Enable Receive Checksum Offload for TCP and UDP */
2885 rxcsum = er32(RXCSUM);
2886 if (adapter->flags & FLAG_RX_CSUM_ENABLED) {
2887 rxcsum |= E1000_RXCSUM_TUOFL;
2890 * IPv4 payload checksum for UDP fragments must be
2891 * used in conjunction with packet-split.
2893 if (adapter->rx_ps_pages)
2894 rxcsum |= E1000_RXCSUM_IPPCSE;
2896 rxcsum &= ~E1000_RXCSUM_TUOFL;
2897 /* no need to clear IPPCSE as it defaults to 0 */
2899 ew32(RXCSUM, rxcsum);
2902 * Enable early receives on supported devices, only takes effect when
2903 * packet size is equal or larger than the specified value (in 8 byte
2904 * units), e.g. using jumbo frames when setting to E1000_ERT_2048
2906 if (adapter->flags & FLAG_HAS_ERT) {
2907 if (adapter->netdev->mtu > ETH_DATA_LEN) {
2908 u32 rxdctl = er32(RXDCTL(0));
2909 ew32(RXDCTL(0), rxdctl | 0x3);
2910 ew32(ERT, E1000_ERT_2048 | (1 << 13));
2912 * With jumbo frames and early-receive enabled,
2913 * excessive C-state transition latencies result in
2914 * dropped transactions.
2916 pm_qos_update_request(
2917 adapter->netdev->pm_qos_req, 55);
2919 pm_qos_update_request(
2920 adapter->netdev->pm_qos_req,
2921 PM_QOS_DEFAULT_VALUE);
2925 /* Enable Receives */
2930 * e1000_update_mc_addr_list - Update Multicast addresses
2931 * @hw: pointer to the HW structure
2932 * @mc_addr_list: array of multicast addresses to program
2933 * @mc_addr_count: number of multicast addresses to program
2935 * Updates the Multicast Table Array.
2936 * The caller must have a packed mc_addr_list of multicast addresses.
2938 static void e1000_update_mc_addr_list(struct e1000_hw *hw, u8 *mc_addr_list,
2941 hw->mac.ops.update_mc_addr_list(hw, mc_addr_list, mc_addr_count);
2945 * e1000_set_multi - Multicast and Promiscuous mode set
2946 * @netdev: network interface device structure
2948 * The set_multi entry point is called whenever the multicast address
2949 * list or the network interface flags are updated. This routine is
2950 * responsible for configuring the hardware for proper multicast,
2951 * promiscuous mode, and all-multi behavior.
2953 static void e1000_set_multi(struct net_device *netdev)
2955 struct e1000_adapter *adapter = netdev_priv(netdev);
2956 struct e1000_hw *hw = &adapter->hw;
2957 struct netdev_hw_addr *ha;
2962 /* Check for Promiscuous and All Multicast modes */
2966 if (netdev->flags & IFF_PROMISC) {
2967 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
2968 rctl &= ~E1000_RCTL_VFE;
2970 if (netdev->flags & IFF_ALLMULTI) {
2971 rctl |= E1000_RCTL_MPE;
2972 rctl &= ~E1000_RCTL_UPE;
2974 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
2976 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
2977 rctl |= E1000_RCTL_VFE;
2982 if (!netdev_mc_empty(netdev)) {
2983 mta_list = kmalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC);
2987 /* prepare a packed array of only addresses. */
2989 netdev_for_each_mc_addr(ha, netdev)
2990 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN);
2992 e1000_update_mc_addr_list(hw, mta_list, i);
2996 * if we're called from probe, we might not have
2997 * anything to do here, so clear out the list
2999 e1000_update_mc_addr_list(hw, NULL, 0);
3004 * e1000_configure - configure the hardware for Rx and Tx
3005 * @adapter: private board structure
3007 static void e1000_configure(struct e1000_adapter *adapter)
3009 e1000_set_multi(adapter->netdev);
3011 e1000_restore_vlan(adapter);
3012 e1000_init_manageability_pt(adapter);
3014 e1000_configure_tx(adapter);
3015 e1000_setup_rctl(adapter);
3016 e1000_configure_rx(adapter);
3017 adapter->alloc_rx_buf(adapter, e1000_desc_unused(adapter->rx_ring));
3021 * e1000e_power_up_phy - restore link in case the phy was powered down
3022 * @adapter: address of board private structure
3024 * The phy may be powered down to save power and turn off link when the
3025 * driver is unloaded and wake on lan is not enabled (among others)
3026 * *** this routine MUST be followed by a call to e1000e_reset ***
3028 void e1000e_power_up_phy(struct e1000_adapter *adapter)
3030 if (adapter->hw.phy.ops.power_up)
3031 adapter->hw.phy.ops.power_up(&adapter->hw);
3033 adapter->hw.mac.ops.setup_link(&adapter->hw);
3037 * e1000_power_down_phy - Power down the PHY
3039 * Power down the PHY so no link is implied when interface is down.
3040 * The PHY cannot be powered down if management or WoL is active.
3042 static void e1000_power_down_phy(struct e1000_adapter *adapter)
3044 /* WoL is enabled */
3048 if (adapter->hw.phy.ops.power_down)
3049 adapter->hw.phy.ops.power_down(&adapter->hw);
3053 * e1000e_reset - bring the hardware into a known good state
3055 * This function boots the hardware and enables some settings that
3056 * require a configuration cycle of the hardware - those cannot be
3057 * set/changed during runtime. After reset the device needs to be
3058 * properly configured for Rx, Tx etc.
3060 void e1000e_reset(struct e1000_adapter *adapter)
3062 struct e1000_mac_info *mac = &adapter->hw.mac;
3063 struct e1000_fc_info *fc = &adapter->hw.fc;
3064 struct e1000_hw *hw = &adapter->hw;
3065 u32 tx_space, min_tx_space, min_rx_space;
3066 u32 pba = adapter->pba;
3069 /* reset Packet Buffer Allocation to default */
3072 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
3074 * To maintain wire speed transmits, the Tx FIFO should be
3075 * large enough to accommodate two full transmit packets,
3076 * rounded up to the next 1KB and expressed in KB. Likewise,
3077 * the Rx FIFO should be large enough to accommodate at least
3078 * one full receive packet and is similarly rounded up and
3082 /* upper 16 bits has Tx packet buffer allocation size in KB */
3083 tx_space = pba >> 16;
3084 /* lower 16 bits has Rx packet buffer allocation size in KB */
3087 * the Tx fifo also stores 16 bytes of information about the tx
3088 * but don't include ethernet FCS because hardware appends it
3090 min_tx_space = (adapter->max_frame_size +
3091 sizeof(struct e1000_tx_desc) -
3093 min_tx_space = ALIGN(min_tx_space, 1024);
3094 min_tx_space >>= 10;
3095 /* software strips receive CRC, so leave room for it */
3096 min_rx_space = adapter->max_frame_size;
3097 min_rx_space = ALIGN(min_rx_space, 1024);
3098 min_rx_space >>= 10;
3101 * If current Tx allocation is less than the min Tx FIFO size,
3102 * and the min Tx FIFO size is less than the current Rx FIFO
3103 * allocation, take space away from current Rx allocation
3105 if ((tx_space < min_tx_space) &&
3106 ((min_tx_space - tx_space) < pba)) {
3107 pba -= min_tx_space - tx_space;
3110 * if short on Rx space, Rx wins and must trump tx
3111 * adjustment or use Early Receive if available
3113 if ((pba < min_rx_space) &&
3114 (!(adapter->flags & FLAG_HAS_ERT)))
3115 /* ERT enabled in e1000_configure_rx */
3124 * flow control settings
3126 * The high water mark must be low enough to fit one full frame
3127 * (or the size used for early receive) above it in the Rx FIFO.
3128 * Set it to the lower of:
3129 * - 90% of the Rx FIFO size, and
3130 * - the full Rx FIFO size minus the early receive size (for parts
3131 * with ERT support assuming ERT set to E1000_ERT_2048), or
3132 * - the full Rx FIFO size minus one full frame
3134 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME)
3135 fc->pause_time = 0xFFFF;
3137 fc->pause_time = E1000_FC_PAUSE_TIME;
3139 fc->current_mode = fc->requested_mode;
3141 switch (hw->mac.type) {
3143 if ((adapter->flags & FLAG_HAS_ERT) &&
3144 (adapter->netdev->mtu > ETH_DATA_LEN))
3145 hwm = min(((pba << 10) * 9 / 10),
3146 ((pba << 10) - (E1000_ERT_2048 << 3)));
3148 hwm = min(((pba << 10) * 9 / 10),
3149 ((pba << 10) - adapter->max_frame_size));
3151 fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */
3152 fc->low_water = fc->high_water - 8;
3156 * Workaround PCH LOM adapter hangs with certain network
3157 * loads. If hangs persist, try disabling Tx flow control.
3159 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3160 fc->high_water = 0x3500;
3161 fc->low_water = 0x1500;
3163 fc->high_water = 0x5000;
3164 fc->low_water = 0x3000;
3166 fc->refresh_time = 0x1000;
3169 fc->high_water = 0x05C20;
3170 fc->low_water = 0x05048;
3171 fc->pause_time = 0x0650;
3172 fc->refresh_time = 0x0400;
3176 /* Allow time for pending master requests to run */
3177 mac->ops.reset_hw(hw);
3180 * For parts with AMT enabled, let the firmware know
3181 * that the network interface is in control
3183 if (adapter->flags & FLAG_HAS_AMT)
3184 e1000_get_hw_control(adapter);
3187 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP)
3188 e1e_wphy(&adapter->hw, BM_WUC, 0);
3190 if (mac->ops.init_hw(hw))
3191 e_err("Hardware Error\n");
3193 e1000_update_mng_vlan(adapter);
3195 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3196 ew32(VET, ETH_P_8021Q);
3198 e1000e_reset_adaptive(hw);
3199 e1000_get_phy_info(hw);
3201 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) &&
3202 !(adapter->flags & FLAG_SMART_POWER_DOWN)) {
3205 * speed up time to link by disabling smart power down, ignore
3206 * the return value of this function because there is nothing
3207 * different we would do if it failed
3209 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
3210 phy_data &= ~IGP02E1000_PM_SPD;
3211 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
3215 int e1000e_up(struct e1000_adapter *adapter)
3217 struct e1000_hw *hw = &adapter->hw;
3219 /* DMA latency requirement to workaround early-receive/jumbo issue */
3220 if (adapter->flags & FLAG_HAS_ERT)
3221 adapter->netdev->pm_qos_req =
3222 pm_qos_add_request(PM_QOS_CPU_DMA_LATENCY,
3223 PM_QOS_DEFAULT_VALUE);
3225 /* hardware has been reset, we need to reload some things */
3226 e1000_configure(adapter);
3228 clear_bit(__E1000_DOWN, &adapter->state);
3230 napi_enable(&adapter->napi);
3231 if (adapter->msix_entries)
3232 e1000_configure_msix(adapter);
3233 e1000_irq_enable(adapter);
3235 netif_wake_queue(adapter->netdev);
3237 /* fire a link change interrupt to start the watchdog */
3238 if (adapter->msix_entries)
3239 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
3241 ew32(ICS, E1000_ICS_LSC);
3246 void e1000e_down(struct e1000_adapter *adapter)
3248 struct net_device *netdev = adapter->netdev;
3249 struct e1000_hw *hw = &adapter->hw;
3253 * signal that we're down so the interrupt handler does not
3254 * reschedule our watchdog timer
3256 set_bit(__E1000_DOWN, &adapter->state);
3258 /* disable receives in the hardware */
3260 ew32(RCTL, rctl & ~E1000_RCTL_EN);
3261 /* flush and sleep below */
3263 netif_stop_queue(netdev);
3265 /* disable transmits in the hardware */
3267 tctl &= ~E1000_TCTL_EN;
3269 /* flush both disables and wait for them to finish */
3273 napi_disable(&adapter->napi);
3274 e1000_irq_disable(adapter);
3276 del_timer_sync(&adapter->watchdog_timer);
3277 del_timer_sync(&adapter->phy_info_timer);
3279 netif_carrier_off(netdev);
3280 adapter->link_speed = 0;
3281 adapter->link_duplex = 0;
3283 if (!pci_channel_offline(adapter->pdev))
3284 e1000e_reset(adapter);
3285 e1000_clean_tx_ring(adapter);
3286 e1000_clean_rx_ring(adapter);
3288 if (adapter->flags & FLAG_HAS_ERT) {
3289 pm_qos_remove_request(
3290 adapter->netdev->pm_qos_req);
3291 adapter->netdev->pm_qos_req = NULL;
3295 * TODO: for power management, we could drop the link and
3296 * pci_disable_device here.
3300 void e1000e_reinit_locked(struct e1000_adapter *adapter)
3303 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
3305 e1000e_down(adapter);
3307 clear_bit(__E1000_RESETTING, &adapter->state);
3311 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
3312 * @adapter: board private structure to initialize
3314 * e1000_sw_init initializes the Adapter private data structure.
3315 * Fields are initialized based on PCI device information and
3316 * OS network device settings (MTU size).
3318 static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
3320 struct net_device *netdev = adapter->netdev;
3322 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
3323 adapter->rx_ps_bsize0 = 128;
3324 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
3325 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
3327 e1000e_set_interrupt_capability(adapter);
3329 if (e1000_alloc_queues(adapter))
3332 /* Explicitly disable IRQ since the NIC can be in any state. */
3333 e1000_irq_disable(adapter);
3335 set_bit(__E1000_DOWN, &adapter->state);
3340 * e1000_intr_msi_test - Interrupt Handler
3341 * @irq: interrupt number
3342 * @data: pointer to a network interface device structure
3344 static irqreturn_t e1000_intr_msi_test(int irq, void *data)
3346 struct net_device *netdev = data;
3347 struct e1000_adapter *adapter = netdev_priv(netdev);
3348 struct e1000_hw *hw = &adapter->hw;
3349 u32 icr = er32(ICR);
3351 e_dbg("icr is %08X\n", icr);
3352 if (icr & E1000_ICR_RXSEQ) {
3353 adapter->flags &= ~FLAG_MSI_TEST_FAILED;
3361 * e1000_test_msi_interrupt - Returns 0 for successful test
3362 * @adapter: board private struct
3364 * code flow taken from tg3.c
3366 static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
3368 struct net_device *netdev = adapter->netdev;
3369 struct e1000_hw *hw = &adapter->hw;
3372 /* poll_enable hasn't been called yet, so don't need disable */
3373 /* clear any pending events */
3376 /* free the real vector and request a test handler */
3377 e1000_free_irq(adapter);
3378 e1000e_reset_interrupt_capability(adapter);
3380 /* Assume that the test fails, if it succeeds then the test
3381 * MSI irq handler will unset this flag */
3382 adapter->flags |= FLAG_MSI_TEST_FAILED;
3384 err = pci_enable_msi(adapter->pdev);
3386 goto msi_test_failed;
3388 err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0,
3389 netdev->name, netdev);
3391 pci_disable_msi(adapter->pdev);
3392 goto msi_test_failed;
3397 e1000_irq_enable(adapter);
3399 /* fire an unusual interrupt on the test handler */
3400 ew32(ICS, E1000_ICS_RXSEQ);
3404 e1000_irq_disable(adapter);
3408 if (adapter->flags & FLAG_MSI_TEST_FAILED) {
3409 adapter->int_mode = E1000E_INT_MODE_LEGACY;
3411 e_info("MSI interrupt test failed!\n");
3414 free_irq(adapter->pdev->irq, netdev);
3415 pci_disable_msi(adapter->pdev);
3418 goto msi_test_failed;
3420 /* okay so the test worked, restore settings */
3421 e_dbg("MSI interrupt test succeeded!\n");
3423 e1000e_set_interrupt_capability(adapter);
3424 e1000_request_irq(adapter);
3429 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3430 * @adapter: board private struct
3432 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3434 static int e1000_test_msi(struct e1000_adapter *adapter)
3439 if (!(adapter->flags & FLAG_MSI_ENABLED))
3442 /* disable SERR in case the MSI write causes a master abort */
3443 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
3444 pci_write_config_word(adapter->pdev, PCI_COMMAND,
3445 pci_cmd & ~PCI_COMMAND_SERR);
3447 err = e1000_test_msi_interrupt(adapter);
3449 /* restore previous setting of command word */
3450 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);
3456 /* EIO means MSI test failed */
3460 /* back to INTx mode */
3461 e_warn("MSI interrupt test failed, using legacy interrupt.\n");
3463 e1000_free_irq(adapter);
3465 err = e1000_request_irq(adapter);
3471 * e1000_open - Called when a network interface is made active
3472 * @netdev: network interface device structure
3474 * Returns 0 on success, negative value on failure
3476 * The open entry point is called when a network interface is made
3477 * active by the system (IFF_UP). At this point all resources needed
3478 * for transmit and receive operations are allocated, the interrupt
3479 * handler is registered with the OS, the watchdog timer is started,
3480 * and the stack is notified that the interface is ready.
3482 static int e1000_open(struct net_device *netdev)
3484 struct e1000_adapter *adapter = netdev_priv(netdev);
3485 struct e1000_hw *hw = &adapter->hw;
3486 struct pci_dev *pdev = adapter->pdev;
3489 /* disallow open during test */
3490 if (test_bit(__E1000_TESTING, &adapter->state))
3493 pm_runtime_get_sync(&pdev->dev);
3495 netif_carrier_off(netdev);
3497 /* allocate transmit descriptors */
3498 err = e1000e_setup_tx_resources(adapter);
3502 /* allocate receive descriptors */
3503 err = e1000e_setup_rx_resources(adapter);
3508 * If AMT is enabled, let the firmware know that the network
3509 * interface is now open and reset the part to a known state.
3511 if (adapter->flags & FLAG_HAS_AMT) {
3512 e1000_get_hw_control(adapter);
3513 e1000e_reset(adapter);
3516 e1000e_power_up_phy(adapter);
3518 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
3519 if ((adapter->hw.mng_cookie.status &
3520 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
3521 e1000_update_mng_vlan(adapter);
3524 * before we allocate an interrupt, we must be ready to handle it.
3525 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3526 * as soon as we call pci_request_irq, so we have to setup our
3527 * clean_rx handler before we do so.
3529 e1000_configure(adapter);
3531 err = e1000_request_irq(adapter);
3536 * Work around PCIe errata with MSI interrupts causing some chipsets to
3537 * ignore e1000e MSI messages, which means we need to test our MSI
3540 if (adapter->int_mode != E1000E_INT_MODE_LEGACY) {
3541 err = e1000_test_msi(adapter);
3543 e_err("Interrupt allocation failed\n");
3548 /* From here on the code is the same as e1000e_up() */
3549 clear_bit(__E1000_DOWN, &adapter->state);
3551 napi_enable(&adapter->napi);
3553 e1000_irq_enable(adapter);
3555 netif_start_queue(netdev);
3557 adapter->idle_check = true;
3558 pm_runtime_put(&pdev->dev);
3560 /* fire a link status change interrupt to start the watchdog */
3561 if (adapter->msix_entries)
3562 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
3564 ew32(ICS, E1000_ICS_LSC);
3569 e1000_release_hw_control(adapter);
3570 e1000_power_down_phy(adapter);
3571 e1000e_free_rx_resources(adapter);
3573 e1000e_free_tx_resources(adapter);
3575 e1000e_reset(adapter);
3576 pm_runtime_put_sync(&pdev->dev);
3582 * e1000_close - Disables a network interface
3583 * @netdev: network interface device structure
3585 * Returns 0, this is not allowed to fail
3587 * The close entry point is called when an interface is de-activated
3588 * by the OS. The hardware is still under the drivers control, but
3589 * needs to be disabled. A global MAC reset is issued to stop the
3590 * hardware, and all transmit and receive resources are freed.
3592 static int e1000_close(struct net_device *netdev)
3594 struct e1000_adapter *adapter = netdev_priv(netdev);
3595 struct pci_dev *pdev = adapter->pdev;
3597 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
3599 pm_runtime_get_sync(&pdev->dev);
3601 if (!test_bit(__E1000_DOWN, &adapter->state)) {
3602 e1000e_down(adapter);
3603 e1000_free_irq(adapter);
3605 e1000_power_down_phy(adapter);
3607 e1000e_free_tx_resources(adapter);
3608 e1000e_free_rx_resources(adapter);
3611 * kill manageability vlan ID if supported, but not if a vlan with
3612 * the same ID is registered on the host OS (let 8021q kill it)
3614 if ((adapter->hw.mng_cookie.status &
3615 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
3617 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id)))
3618 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
3621 * If AMT is enabled, let the firmware know that the network
3622 * interface is now closed
3624 if (adapter->flags & FLAG_HAS_AMT)
3625 e1000_release_hw_control(adapter);
3627 pm_runtime_put_sync(&pdev->dev);
3632 * e1000_set_mac - Change the Ethernet Address of the NIC
3633 * @netdev: network interface device structure
3634 * @p: pointer to an address structure
3636 * Returns 0 on success, negative on failure
3638 static int e1000_set_mac(struct net_device *netdev, void *p)
3640 struct e1000_adapter *adapter = netdev_priv(netdev);
3641 struct sockaddr *addr = p;
3643 if (!is_valid_ether_addr(addr->sa_data))
3644 return -EADDRNOTAVAIL;
3646 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
3647 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
3649 e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
3651 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) {
3652 /* activate the work around */
3653 e1000e_set_laa_state_82571(&adapter->hw, 1);
3656 * Hold a copy of the LAA in RAR[14] This is done so that
3657 * between the time RAR[0] gets clobbered and the time it
3658 * gets fixed (in e1000_watchdog), the actual LAA is in one
3659 * of the RARs and no incoming packets directed to this port
3660 * are dropped. Eventually the LAA will be in RAR[0] and
3663 e1000e_rar_set(&adapter->hw,
3664 adapter->hw.mac.addr,
3665 adapter->hw.mac.rar_entry_count - 1);
3672 * e1000e_update_phy_task - work thread to update phy
3673 * @work: pointer to our work struct
3675 * this worker thread exists because we must acquire a
3676 * semaphore to read the phy, which we could msleep while
3677 * waiting for it, and we can't msleep in a timer.
3679 static void e1000e_update_phy_task(struct work_struct *work)
3681 struct e1000_adapter *adapter = container_of(work,
3682 struct e1000_adapter, update_phy_task);
3683 e1000_get_phy_info(&adapter->hw);
3687 * Need to wait a few seconds after link up to get diagnostic information from
3690 static void e1000_update_phy_info(unsigned long data)
3692 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
3693 schedule_work(&adapter->update_phy_task);
3697 * e1000e_update_phy_stats - Update the PHY statistics counters
3698 * @adapter: board private structure
3700 static void e1000e_update_phy_stats(struct e1000_adapter *adapter)
3702 struct e1000_hw *hw = &adapter->hw;
3706 ret_val = hw->phy.ops.acquire(hw);
3712 #define HV_PHY_STATS_PAGE 778
3714 * A page set is expensive so check if already on desired page.
3715 * If not, set to the page with the PHY status registers.
3717 ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
3721 if (phy_data != (HV_PHY_STATS_PAGE << IGP_PAGE_SHIFT)) {
3722 ret_val = e1000e_write_phy_reg_mdic(hw,
3723 IGP01E1000_PHY_PAGE_SELECT,
3724 (HV_PHY_STATS_PAGE <<
3730 /* Read/clear the upper 16-bit registers and read/accumulate lower */
3732 /* Single Collision Count */
3733 e1000e_read_phy_reg_mdic(hw, HV_SCC_UPPER & MAX_PHY_REG_ADDRESS,
3735 ret_val = e1000e_read_phy_reg_mdic(hw,
3736 HV_SCC_LOWER & MAX_PHY_REG_ADDRESS,
3739 adapter->stats.scc += phy_data;
3741 /* Excessive Collision Count */
3742 e1000e_read_phy_reg_mdic(hw, HV_ECOL_UPPER & MAX_PHY_REG_ADDRESS,
3744 ret_val = e1000e_read_phy_reg_mdic(hw,
3745 HV_ECOL_LOWER & MAX_PHY_REG_ADDRESS,
3748 adapter->stats.ecol += phy_data;
3750 /* Multiple Collision Count */
3751 e1000e_read_phy_reg_mdic(hw, HV_MCC_UPPER & MAX_PHY_REG_ADDRESS,
3753 ret_val = e1000e_read_phy_reg_mdic(hw,
3754 HV_MCC_LOWER & MAX_PHY_REG_ADDRESS,
3757 adapter->stats.mcc += phy_data;
3759 /* Late Collision Count */
3760 e1000e_read_phy_reg_mdic(hw, HV_LATECOL_UPPER & MAX_PHY_REG_ADDRESS,
3762 ret_val = e1000e_read_phy_reg_mdic(hw,
3764 MAX_PHY_REG_ADDRESS,
3767 adapter->stats.latecol += phy_data;
3769 /* Collision Count - also used for adaptive IFS */
3770 e1000e_read_phy_reg_mdic(hw, HV_COLC_UPPER & MAX_PHY_REG_ADDRESS,
3772 ret_val = e1000e_read_phy_reg_mdic(hw,
3773 HV_COLC_LOWER & MAX_PHY_REG_ADDRESS,
3776 hw->mac.collision_delta = phy_data;
3779 e1000e_read_phy_reg_mdic(hw, HV_DC_UPPER & MAX_PHY_REG_ADDRESS,
3781 ret_val = e1000e_read_phy_reg_mdic(hw,
3782 HV_DC_LOWER & MAX_PHY_REG_ADDRESS,
3785 adapter->stats.dc += phy_data;
3787 /* Transmit with no CRS */
3788 e1000e_read_phy_reg_mdic(hw, HV_TNCRS_UPPER & MAX_PHY_REG_ADDRESS,
3790 ret_val = e1000e_read_phy_reg_mdic(hw,
3791 HV_TNCRS_LOWER & MAX_PHY_REG_ADDRESS,
3794 adapter->stats.tncrs += phy_data;
3797 hw->phy.ops.release(hw);
3801 * e1000e_update_stats - Update the board statistics counters
3802 * @adapter: board private structure
3804 void e1000e_update_stats(struct e1000_adapter *adapter)
3806 struct net_device *netdev = adapter->netdev;
3807 struct e1000_hw *hw = &adapter->hw;
3808 struct pci_dev *pdev = adapter->pdev;
3811 * Prevent stats update while adapter is being reset, or if the pci
3812 * connection is down.
3814 if (adapter->link_speed == 0)
3816 if (pci_channel_offline(pdev))
3819 adapter->stats.crcerrs += er32(CRCERRS);
3820 adapter->stats.gprc += er32(GPRC);
3821 adapter->stats.gorc += er32(GORCL);
3822 er32(GORCH); /* Clear gorc */
3823 adapter->stats.bprc += er32(BPRC);
3824 adapter->stats.mprc += er32(MPRC);
3825 adapter->stats.roc += er32(ROC);
3827 adapter->stats.mpc += er32(MPC);
3829 /* Half-duplex statistics */
3830 if (adapter->link_duplex == HALF_DUPLEX) {
3831 if (adapter->flags2 & FLAG2_HAS_PHY_STATS) {
3832 e1000e_update_phy_stats(adapter);
3834 adapter->stats.scc += er32(SCC);
3835 adapter->stats.ecol += er32(ECOL);
3836 adapter->stats.mcc += er32(MCC);
3837 adapter->stats.latecol += er32(LATECOL);
3838 adapter->stats.dc += er32(DC);
3840 hw->mac.collision_delta = er32(COLC);
3842 if ((hw->mac.type != e1000_82574) &&
3843 (hw->mac.type != e1000_82583))
3844 adapter->stats.tncrs += er32(TNCRS);
3846 adapter->stats.colc += hw->mac.collision_delta;
3849 adapter->stats.xonrxc += er32(XONRXC);
3850 adapter->stats.xontxc += er32(XONTXC);
3851 adapter->stats.xoffrxc += er32(XOFFRXC);
3852 adapter->stats.xofftxc += er32(XOFFTXC);
3853 adapter->stats.gptc += er32(GPTC);
3854 adapter->stats.gotc += er32(GOTCL);
3855 er32(GOTCH); /* Clear gotc */
3856 adapter->stats.rnbc += er32(RNBC);
3857 adapter->stats.ruc += er32(RUC);
3859 adapter->stats.mptc += er32(MPTC);
3860 adapter->stats.bptc += er32(BPTC);
3862 /* used for adaptive IFS */
3864 hw->mac.tx_packet_delta = er32(TPT);
3865 adapter->stats.tpt += hw->mac.tx_packet_delta;
3867 adapter->stats.algnerrc += er32(ALGNERRC);
3868 adapter->stats.rxerrc += er32(RXERRC);
3869 adapter->stats.cexterr += er32(CEXTERR);
3870 adapter->stats.tsctc += er32(TSCTC);
3871 adapter->stats.tsctfc += er32(TSCTFC);
3873 /* Fill out the OS statistics structure */
3874 netdev->stats.multicast = adapter->stats.mprc;
3875 netdev->stats.collisions = adapter->stats.colc;
3880 * RLEC on some newer hardware can be incorrect so build
3881 * our own version based on RUC and ROC
3883 netdev->stats.rx_errors = adapter->stats.rxerrc +
3884 adapter->stats.crcerrs + adapter->stats.algnerrc +
3885 adapter->stats.ruc + adapter->stats.roc +
3886 adapter->stats.cexterr;
3887 netdev->stats.rx_length_errors = adapter->stats.ruc +
3889 netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
3890 netdev->stats.rx_frame_errors = adapter->stats.algnerrc;
3891 netdev->stats.rx_missed_errors = adapter->stats.mpc;
3894 netdev->stats.tx_errors = adapter->stats.ecol +
3895 adapter->stats.latecol;
3896 netdev->stats.tx_aborted_errors = adapter->stats.ecol;
3897 netdev->stats.tx_window_errors = adapter->stats.latecol;
3898 netdev->stats.tx_carrier_errors = adapter->stats.tncrs;
3900 /* Tx Dropped needs to be maintained elsewhere */
3902 /* Management Stats */
3903 adapter->stats.mgptc += er32(MGTPTC);
3904 adapter->stats.mgprc += er32(MGTPRC);
3905 adapter->stats.mgpdc += er32(MGTPDC);
3909 * e1000_phy_read_status - Update the PHY register status snapshot
3910 * @adapter: board private structure
3912 static void e1000_phy_read_status(struct e1000_adapter *adapter)
3914 struct e1000_hw *hw = &adapter->hw;
3915 struct e1000_phy_regs *phy = &adapter->phy_regs;
3918 if ((er32(STATUS) & E1000_STATUS_LU) &&
3919 (adapter->hw.phy.media_type == e1000_media_type_copper)) {
3920 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr);
3921 ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr);
3922 ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise);
3923 ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa);
3924 ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion);
3925 ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000);
3926 ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000);
3927 ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus);
3929 e_warn("Error reading PHY register\n");
3932 * Do not read PHY registers if link is not up
3933 * Set values to typical power-on defaults
3935 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX);
3936 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL |
3937 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE |
3939 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP |
3940 ADVERTISE_ALL | ADVERTISE_CSMA);
3942 phy->expansion = EXPANSION_ENABLENPAGE;
3943 phy->ctrl1000 = ADVERTISE_1000FULL;
3945 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF);
3949 static void e1000_print_link_info(struct e1000_adapter *adapter)
3951 struct e1000_hw *hw = &adapter->hw;
3952 u32 ctrl = er32(CTRL);
3954 /* Link status message must follow this format for user tools */
3955 printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s, "
3956 "Flow Control: %s\n",
3957 adapter->netdev->name,
3958 adapter->link_speed,
3959 (adapter->link_duplex == FULL_DUPLEX) ?
3960 "Full Duplex" : "Half Duplex",
3961 ((ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE)) ?
3963 ((ctrl & E1000_CTRL_RFCE) ? "RX" :
3964 ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None" )));
3967 static bool e1000e_has_link(struct e1000_adapter *adapter)
3969 struct e1000_hw *hw = &adapter->hw;
3970 bool link_active = 0;
3974 * get_link_status is set on LSC (link status) interrupt or
3975 * Rx sequence error interrupt. get_link_status will stay
3976 * false until the check_for_link establishes link
3977 * for copper adapters ONLY
3979 switch (hw->phy.media_type) {
3980 case e1000_media_type_copper:
3981 if (hw->mac.get_link_status) {
3982 ret_val = hw->mac.ops.check_for_link(hw);
3983 link_active = !hw->mac.get_link_status;
3988 case e1000_media_type_fiber:
3989 ret_val = hw->mac.ops.check_for_link(hw);
3990 link_active = !!(er32(STATUS) & E1000_STATUS_LU);
3992 case e1000_media_type_internal_serdes:
3993 ret_val = hw->mac.ops.check_for_link(hw);
3994 link_active = adapter->hw.mac.serdes_has_link;
3997 case e1000_media_type_unknown:
4001 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) &&
4002 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
4003 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
4004 e_info("Gigabit has been disabled, downgrading speed\n");
4010 static void e1000e_enable_receives(struct e1000_adapter *adapter)
4012 /* make sure the receive unit is started */
4013 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
4014 (adapter->flags & FLAG_RX_RESTART_NOW)) {
4015 struct e1000_hw *hw = &adapter->hw;
4016 u32 rctl = er32(RCTL);
4017 ew32(RCTL, rctl | E1000_RCTL_EN);
4018 adapter->flags &= ~FLAG_RX_RESTART_NOW;
4023 * e1000_watchdog - Timer Call-back
4024 * @data: pointer to adapter cast into an unsigned long
4026 static void e1000_watchdog(unsigned long data)
4028 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
4030 /* Do the rest outside of interrupt context */
4031 schedule_work(&adapter->watchdog_task);
4033 /* TODO: make this use queue_delayed_work() */
4036 static void e1000_watchdog_task(struct work_struct *work)
4038 struct e1000_adapter *adapter = container_of(work,
4039 struct e1000_adapter, watchdog_task);
4040 struct net_device *netdev = adapter->netdev;
4041 struct e1000_mac_info *mac = &adapter->hw.mac;
4042 struct e1000_phy_info *phy = &adapter->hw.phy;
4043 struct e1000_ring *tx_ring = adapter->tx_ring;
4044 struct e1000_hw *hw = &adapter->hw;
4048 link = e1000e_has_link(adapter);
4049 if ((netif_carrier_ok(netdev)) && link) {
4050 /* Cancel scheduled suspend requests. */
4051 pm_runtime_resume(netdev->dev.parent);
4053 e1000e_enable_receives(adapter);
4057 if ((e1000e_enable_tx_pkt_filtering(hw)) &&
4058 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id))
4059 e1000_update_mng_vlan(adapter);
4062 if (!netif_carrier_ok(netdev)) {
4065 /* Cancel scheduled suspend requests. */
4066 pm_runtime_resume(netdev->dev.parent);
4068 /* update snapshot of PHY registers on LSC */
4069 e1000_phy_read_status(adapter);
4070 mac->ops.get_link_up_info(&adapter->hw,
4071 &adapter->link_speed,
4072 &adapter->link_duplex);
4073 e1000_print_link_info(adapter);
4075 * On supported PHYs, check for duplex mismatch only
4076 * if link has autonegotiated at 10/100 half
4078 if ((hw->phy.type == e1000_phy_igp_3 ||
4079 hw->phy.type == e1000_phy_bm) &&
4080 (hw->mac.autoneg == true) &&
4081 (adapter->link_speed == SPEED_10 ||
4082 adapter->link_speed == SPEED_100) &&
4083 (adapter->link_duplex == HALF_DUPLEX)) {
4086 e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp);
4088 if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS))
4089 e_info("Autonegotiated half duplex but"
4090 " link partner cannot autoneg. "
4091 " Try forcing full duplex if "
4092 "link gets many collisions.\n");
4095 /* adjust timeout factor according to speed/duplex */
4096 adapter->tx_timeout_factor = 1;
4097 switch (adapter->link_speed) {
4100 adapter->tx_timeout_factor = 16;
4104 adapter->tx_timeout_factor = 10;
4109 * workaround: re-program speed mode bit after
4112 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) &&
4115 tarc0 = er32(TARC(0));
4116 tarc0 &= ~SPEED_MODE_BIT;
4117 ew32(TARC(0), tarc0);
4121 * disable TSO for pcie and 10/100 speeds, to avoid
4122 * some hardware issues
4124 if (!(adapter->flags & FLAG_TSO_FORCE)) {
4125 switch (adapter->link_speed) {
4128 e_info("10/100 speed: disabling TSO\n");
4129 netdev->features &= ~NETIF_F_TSO;
4130 netdev->features &= ~NETIF_F_TSO6;
4133 netdev->features |= NETIF_F_TSO;
4134 netdev->features |= NETIF_F_TSO6;
4143 * enable transmits in the hardware, need to do this
4144 * after setting TARC(0)
4147 tctl |= E1000_TCTL_EN;
4151 * Perform any post-link-up configuration before
4152 * reporting link up.
4154 if (phy->ops.cfg_on_link_up)
4155 phy->ops.cfg_on_link_up(hw);
4157 netif_carrier_on(netdev);
4159 if (!test_bit(__E1000_DOWN, &adapter->state))
4160 mod_timer(&adapter->phy_info_timer,
4161 round_jiffies(jiffies + 2 * HZ));
4164 if (netif_carrier_ok(netdev)) {
4165 adapter->link_speed = 0;
4166 adapter->link_duplex = 0;
4167 /* Link status message must follow this format */
4168 printk(KERN_INFO "e1000e: %s NIC Link is Down\n",
4169 adapter->netdev->name);
4170 netif_carrier_off(netdev);
4171 if (!test_bit(__E1000_DOWN, &adapter->state))
4172 mod_timer(&adapter->phy_info_timer,
4173 round_jiffies(jiffies + 2 * HZ));
4175 if (adapter->flags & FLAG_RX_NEEDS_RESTART)
4176 schedule_work(&adapter->reset_task);
4178 pm_schedule_suspend(netdev->dev.parent,
4184 e1000e_update_stats(adapter);
4186 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
4187 adapter->tpt_old = adapter->stats.tpt;
4188 mac->collision_delta = adapter->stats.colc - adapter->colc_old;
4189 adapter->colc_old = adapter->stats.colc;
4191 adapter->gorc = adapter->stats.gorc - adapter->gorc_old;
4192 adapter->gorc_old = adapter->stats.gorc;
4193 adapter->gotc = adapter->stats.gotc - adapter->gotc_old;
4194 adapter->gotc_old = adapter->stats.gotc;
4196 e1000e_update_adaptive(&adapter->hw);
4198 if (!netif_carrier_ok(netdev)) {
4199 tx_pending = (e1000_desc_unused(tx_ring) + 1 <
4203 * We've lost link, so the controller stops DMA,
4204 * but we've got queued Tx work that's never going
4205 * to get done, so reset controller to flush Tx.
4206 * (Do the reset outside of interrupt context).
4208 adapter->tx_timeout_count++;
4209 schedule_work(&adapter->reset_task);
4210 /* return immediately since reset is imminent */
4215 /* Simple mode for Interrupt Throttle Rate (ITR) */
4216 if (adapter->itr_setting == 4) {
4218 * Symmetric Tx/Rx gets a reduced ITR=2000;
4219 * Total asymmetrical Tx or Rx gets ITR=8000;
4220 * everyone else is between 2000-8000.
4222 u32 goc = (adapter->gotc + adapter->gorc) / 10000;
4223 u32 dif = (adapter->gotc > adapter->gorc ?
4224 adapter->gotc - adapter->gorc :
4225 adapter->gorc - adapter->gotc) / 10000;
4226 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
4228 ew32(ITR, 1000000000 / (itr * 256));
4231 /* Cause software interrupt to ensure Rx ring is cleaned */
4232 if (adapter->msix_entries)
4233 ew32(ICS, adapter->rx_ring->ims_val);
4235 ew32(ICS, E1000_ICS_RXDMT0);
4237 /* Force detection of hung controller every watchdog period */
4238 adapter->detect_tx_hung = 1;
4241 * With 82571 controllers, LAA may be overwritten due to controller
4242 * reset from the other port. Set the appropriate LAA in RAR[0]
4244 if (e1000e_get_laa_state_82571(hw))
4245 e1000e_rar_set(hw, adapter->hw.mac.addr, 0);
4247 /* Reset the timer */
4248 if (!test_bit(__E1000_DOWN, &adapter->state))
4249 mod_timer(&adapter->watchdog_timer,
4250 round_jiffies(jiffies + 2 * HZ));
4253 #define E1000_TX_FLAGS_CSUM 0x00000001
4254 #define E1000_TX_FLAGS_VLAN 0x00000002
4255 #define E1000_TX_FLAGS_TSO 0x00000004
4256 #define E1000_TX_FLAGS_IPV4 0x00000008
4257 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
4258 #define E1000_TX_FLAGS_VLAN_SHIFT 16
4260 static int e1000_tso(struct e1000_adapter *adapter,
4261 struct sk_buff *skb)
4263 struct e1000_ring *tx_ring = adapter->tx_ring;
4264 struct e1000_context_desc *context_desc;
4265 struct e1000_buffer *buffer_info;
4268 u16 ipcse = 0, tucse, mss;
4269 u8 ipcss, ipcso, tucss, tucso, hdr_len;
4272 if (!skb_is_gso(skb))
4275 if (skb_header_cloned(skb)) {
4276 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
4281 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4282 mss = skb_shinfo(skb)->gso_size;
4283 if (skb->protocol == htons(ETH_P_IP)) {
4284 struct iphdr *iph = ip_hdr(skb);
4287 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
4289 cmd_length = E1000_TXD_CMD_IP;
4290 ipcse = skb_transport_offset(skb) - 1;
4291 } else if (skb_is_gso_v6(skb)) {
4292 ipv6_hdr(skb)->payload_len = 0;
4293 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
4294 &ipv6_hdr(skb)->daddr,
4298 ipcss = skb_network_offset(skb);
4299 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
4300 tucss = skb_transport_offset(skb);
4301 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
4304 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
4305 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
4307 i = tx_ring->next_to_use;
4308 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
4309 buffer_info = &tx_ring->buffer_info[i];
4311 context_desc->lower_setup.ip_fields.ipcss = ipcss;
4312 context_desc->lower_setup.ip_fields.ipcso = ipcso;
4313 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
4314 context_desc->upper_setup.tcp_fields.tucss = tucss;
4315 context_desc->upper_setup.tcp_fields.tucso = tucso;
4316 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
4317 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
4318 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
4319 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
4321 buffer_info->time_stamp = jiffies;
4322 buffer_info->next_to_watch = i;
4325 if (i == tx_ring->count)
4327 tx_ring->next_to_use = i;
4332 static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb)
4334 struct e1000_ring *tx_ring = adapter->tx_ring;
4335 struct e1000_context_desc *context_desc;
4336 struct e1000_buffer *buffer_info;
4339 u32 cmd_len = E1000_TXD_CMD_DEXT;
4342 if (skb->ip_summed != CHECKSUM_PARTIAL)
4345 if (skb->protocol == cpu_to_be16(ETH_P_8021Q))
4346 protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto;
4348 protocol = skb->protocol;
4351 case cpu_to_be16(ETH_P_IP):
4352 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
4353 cmd_len |= E1000_TXD_CMD_TCP;
4355 case cpu_to_be16(ETH_P_IPV6):
4356 /* XXX not handling all IPV6 headers */
4357 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
4358 cmd_len |= E1000_TXD_CMD_TCP;
4361 if (unlikely(net_ratelimit()))
4362 e_warn("checksum_partial proto=%x!\n",
4363 be16_to_cpu(protocol));
4367 css = skb_transport_offset(skb);
4369 i = tx_ring->next_to_use;
4370 buffer_info = &tx_ring->buffer_info[i];
4371 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
4373 context_desc->lower_setup.ip_config = 0;
4374 context_desc->upper_setup.tcp_fields.tucss = css;
4375 context_desc->upper_setup.tcp_fields.tucso =
4376 css + skb->csum_offset;
4377 context_desc->upper_setup.tcp_fields.tucse = 0;
4378 context_desc->tcp_seg_setup.data = 0;
4379 context_desc->cmd_and_length = cpu_to_le32(cmd_len);
4381 buffer_info->time_stamp = jiffies;
4382 buffer_info->next_to_watch = i;
4385 if (i == tx_ring->count)
4387 tx_ring->next_to_use = i;
4392 #define E1000_MAX_PER_TXD 8192
4393 #define E1000_MAX_TXD_PWR 12
4395 static int e1000_tx_map(struct e1000_adapter *adapter,
4396 struct sk_buff *skb, unsigned int first,
4397 unsigned int max_per_txd, unsigned int nr_frags,
4400 struct e1000_ring *tx_ring = adapter->tx_ring;
4401 struct pci_dev *pdev = adapter->pdev;
4402 struct e1000_buffer *buffer_info;
4403 unsigned int len = skb_headlen(skb);
4404 unsigned int offset = 0, size, count = 0, i;
4405 unsigned int f, bytecount, segs;
4407 i = tx_ring->next_to_use;
4410 buffer_info = &tx_ring->buffer_info[i];
4411 size = min(len, max_per_txd);
4413 buffer_info->length = size;
4414 buffer_info->time_stamp = jiffies;
4415 buffer_info->next_to_watch = i;
4416 buffer_info->dma = dma_map_single(&pdev->dev,
4418 size, DMA_TO_DEVICE);
4419 buffer_info->mapped_as_page = false;
4420 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
4429 if (i == tx_ring->count)
4434 for (f = 0; f < nr_frags; f++) {
4435 struct skb_frag_struct *frag;
4437 frag = &skb_shinfo(skb)->frags[f];
4439 offset = frag->page_offset;
4443 if (i == tx_ring->count)
4446 buffer_info = &tx_ring->buffer_info[i];
4447 size = min(len, max_per_txd);
4449 buffer_info->length = size;
4450 buffer_info->time_stamp = jiffies;
4451 buffer_info->next_to_watch = i;
4452 buffer_info->dma = dma_map_page(&pdev->dev, frag->page,
4455 buffer_info->mapped_as_page = true;
4456 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
4465 segs = skb_shinfo(skb)->gso_segs ?: 1;
4466 /* multiply data chunks by size of headers */
4467 bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len;
4469 tx_ring->buffer_info[i].skb = skb;
4470 tx_ring->buffer_info[i].segs = segs;
4471 tx_ring->buffer_info[i].bytecount = bytecount;
4472 tx_ring->buffer_info[first].next_to_watch = i;
4477 dev_err(&pdev->dev, "TX DMA map failed\n");
4478 buffer_info->dma = 0;
4484 i += tx_ring->count;
4486 buffer_info = &tx_ring->buffer_info[i];
4487 e1000_put_txbuf(adapter, buffer_info);;
4493 static void e1000_tx_queue(struct e1000_adapter *adapter,
4494 int tx_flags, int count)
4496 struct e1000_ring *tx_ring = adapter->tx_ring;
4497 struct e1000_tx_desc *tx_desc = NULL;
4498 struct e1000_buffer *buffer_info;
4499 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
4502 if (tx_flags & E1000_TX_FLAGS_TSO) {
4503 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
4505 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
4507 if (tx_flags & E1000_TX_FLAGS_IPV4)
4508 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
4511 if (tx_flags & E1000_TX_FLAGS_CSUM) {
4512 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
4513 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
4516 if (tx_flags & E1000_TX_FLAGS_VLAN) {
4517 txd_lower |= E1000_TXD_CMD_VLE;
4518 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
4521 i = tx_ring->next_to_use;
4524 buffer_info = &tx_ring->buffer_info[i];
4525 tx_desc = E1000_TX_DESC(*tx_ring, i);
4526 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
4527 tx_desc->lower.data =
4528 cpu_to_le32(txd_lower | buffer_info->length);
4529 tx_desc->upper.data = cpu_to_le32(txd_upper);
4532 if (i == tx_ring->count)
4536 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
4539 * Force memory writes to complete before letting h/w
4540 * know there are new descriptors to fetch. (Only
4541 * applicable for weak-ordered memory model archs,
4546 tx_ring->next_to_use = i;
4547 writel(i, adapter->hw.hw_addr + tx_ring->tail);
4549 * we need this if more than one processor can write to our tail
4550 * at a time, it synchronizes IO on IA64/Altix systems
4555 #define MINIMUM_DHCP_PACKET_SIZE 282
4556 static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
4557 struct sk_buff *skb)
4559 struct e1000_hw *hw = &adapter->hw;
4562 if (vlan_tx_tag_present(skb)) {
4563 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) &&
4564 (adapter->hw.mng_cookie.status &
4565 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
4569 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE)
4572 if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP))
4576 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14);
4579 if (ip->protocol != IPPROTO_UDP)
4582 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
4583 if (ntohs(udp->dest) != 67)
4586 offset = (u8 *)udp + 8 - skb->data;
4587 length = skb->len - offset;
4588 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length);
4594 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
4596 struct e1000_adapter *adapter = netdev_priv(netdev);
4598 netif_stop_queue(netdev);
4600 * Herbert's original patch had:
4601 * smp_mb__after_netif_stop_queue();
4602 * but since that doesn't exist yet, just open code it.
4607 * We need to check again in a case another CPU has just
4608 * made room available.
4610 if (e1000_desc_unused(adapter->tx_ring) < size)
4614 netif_start_queue(netdev);
4615 ++adapter->restart_queue;
4619 static int e1000_maybe_stop_tx(struct net_device *netdev, int size)
4621 struct e1000_adapter *adapter = netdev_priv(netdev);
4623 if (e1000_desc_unused(adapter->tx_ring) >= size)
4625 return __e1000_maybe_stop_tx(netdev, size);
4628 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
4629 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
4630 struct net_device *netdev)
4632 struct e1000_adapter *adapter = netdev_priv(netdev);
4633 struct e1000_ring *tx_ring = adapter->tx_ring;
4635 unsigned int max_per_txd = E1000_MAX_PER_TXD;
4636 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
4637 unsigned int tx_flags = 0;
4638 unsigned int len = skb_headlen(skb);
4639 unsigned int nr_frags;
4645 if (test_bit(__E1000_DOWN, &adapter->state)) {
4646 dev_kfree_skb_any(skb);
4647 return NETDEV_TX_OK;
4650 if (skb->len <= 0) {
4651 dev_kfree_skb_any(skb);
4652 return NETDEV_TX_OK;
4655 mss = skb_shinfo(skb)->gso_size;
4657 * The controller does a simple calculation to
4658 * make sure there is enough room in the FIFO before
4659 * initiating the DMA for each buffer. The calc is:
4660 * 4 = ceil(buffer len/mss). To make sure we don't
4661 * overrun the FIFO, adjust the max buffer len if mss
4666 max_per_txd = min(mss << 2, max_per_txd);
4667 max_txd_pwr = fls(max_per_txd) - 1;
4670 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
4671 * points to just header, pull a few bytes of payload from
4672 * frags into skb->data
4674 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4676 * we do this workaround for ES2LAN, but it is un-necessary,
4677 * avoiding it could save a lot of cycles
4679 if (skb->data_len && (hdr_len == len)) {
4680 unsigned int pull_size;
4682 pull_size = min((unsigned int)4, skb->data_len);
4683 if (!__pskb_pull_tail(skb, pull_size)) {
4684 e_err("__pskb_pull_tail failed.\n");
4685 dev_kfree_skb_any(skb);
4686 return NETDEV_TX_OK;
4688 len = skb_headlen(skb);
4692 /* reserve a descriptor for the offload context */
4693 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
4697 count += TXD_USE_COUNT(len, max_txd_pwr);
4699 nr_frags = skb_shinfo(skb)->nr_frags;
4700 for (f = 0; f < nr_frags; f++)
4701 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
4704 if (adapter->hw.mac.tx_pkt_filtering)
4705 e1000_transfer_dhcp_info(adapter, skb);
4708 * need: count + 2 desc gap to keep tail from touching
4709 * head, otherwise try next time
4711 if (e1000_maybe_stop_tx(netdev, count + 2))
4712 return NETDEV_TX_BUSY;
4714 if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
4715 tx_flags |= E1000_TX_FLAGS_VLAN;
4716 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
4719 first = tx_ring->next_to_use;
4721 tso = e1000_tso(adapter, skb);
4723 dev_kfree_skb_any(skb);
4724 return NETDEV_TX_OK;
4728 tx_flags |= E1000_TX_FLAGS_TSO;
4729 else if (e1000_tx_csum(adapter, skb))
4730 tx_flags |= E1000_TX_FLAGS_CSUM;
4733 * Old method was to assume IPv4 packet by default if TSO was enabled.
4734 * 82571 hardware supports TSO capabilities for IPv6 as well...
4735 * no longer assume, we must.
4737 if (skb->protocol == htons(ETH_P_IP))
4738 tx_flags |= E1000_TX_FLAGS_IPV4;
4740 /* if count is 0 then mapping error has occured */
4741 count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss);
4743 e1000_tx_queue(adapter, tx_flags, count);
4744 /* Make sure there is space in the ring for the next send. */
4745 e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2);
4748 dev_kfree_skb_any(skb);
4749 tx_ring->buffer_info[first].time_stamp = 0;
4750 tx_ring->next_to_use = first;
4753 return NETDEV_TX_OK;
4757 * e1000_tx_timeout - Respond to a Tx Hang
4758 * @netdev: network interface device structure
4760 static void e1000_tx_timeout(struct net_device *netdev)
4762 struct e1000_adapter *adapter = netdev_priv(netdev);
4764 /* Do the reset outside of interrupt context */
4765 adapter->tx_timeout_count++;
4766 schedule_work(&adapter->reset_task);
4769 static void e1000_reset_task(struct work_struct *work)
4771 struct e1000_adapter *adapter;
4772 adapter = container_of(work, struct e1000_adapter, reset_task);
4774 e1000e_dump(adapter);
4775 e_err("Reset adapter\n");
4776 e1000e_reinit_locked(adapter);
4780 * e1000_get_stats - Get System Network Statistics
4781 * @netdev: network interface device structure
4783 * Returns the address of the device statistics structure.
4784 * The statistics are actually updated from the timer callback.
4786 static struct net_device_stats *e1000_get_stats(struct net_device *netdev)
4788 /* only return the current stats */
4789 return &netdev->stats;
4793 * e1000_change_mtu - Change the Maximum Transfer Unit
4794 * @netdev: network interface device structure
4795 * @new_mtu: new value for maximum frame size
4797 * Returns 0 on success, negative on failure
4799 static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
4801 struct e1000_adapter *adapter = netdev_priv(netdev);
4802 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
4804 /* Jumbo frame support */
4805 if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) &&
4806 !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
4807 e_err("Jumbo Frames not supported.\n");
4811 /* Supported frame sizes */
4812 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) ||
4813 (max_frame > adapter->max_hw_frame_size)) {
4814 e_err("Unsupported MTU setting\n");
4818 /* 82573 Errata 17 */
4819 if (((adapter->hw.mac.type == e1000_82573) ||
4820 (adapter->hw.mac.type == e1000_82574)) &&
4821 (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN)) {
4822 adapter->flags2 |= FLAG2_DISABLE_ASPM_L1;
4823 e1000e_disable_aspm(adapter->pdev, PCIE_LINK_STATE_L1);
4826 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
4828 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
4829 adapter->max_frame_size = max_frame;
4830 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu);
4831 netdev->mtu = new_mtu;
4832 if (netif_running(netdev))
4833 e1000e_down(adapter);
4836 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
4837 * means we reserve 2 more, this pushes us to allocate from the next
4839 * i.e. RXBUFFER_2048 --> size-4096 slab
4840 * However with the new *_jumbo_rx* routines, jumbo receives will use
4844 if (max_frame <= 2048)
4845 adapter->rx_buffer_len = 2048;
4847 adapter->rx_buffer_len = 4096;
4849 /* adjust allocation if LPE protects us, and we aren't using SBP */
4850 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
4851 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
4852 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN
4855 if (netif_running(netdev))
4858 e1000e_reset(adapter);
4860 clear_bit(__E1000_RESETTING, &adapter->state);
4865 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
4868 struct e1000_adapter *adapter = netdev_priv(netdev);
4869 struct mii_ioctl_data *data = if_mii(ifr);
4871 if (adapter->hw.phy.media_type != e1000_media_type_copper)
4876 data->phy_id = adapter->hw.phy.addr;
4879 e1000_phy_read_status(adapter);
4881 switch (data->reg_num & 0x1F) {
4883 data->val_out = adapter->phy_regs.bmcr;
4886 data->val_out = adapter->phy_regs.bmsr;
4889 data->val_out = (adapter->hw.phy.id >> 16);
4892 data->val_out = (adapter->hw.phy.id & 0xFFFF);
4895 data->val_out = adapter->phy_regs.advertise;
4898 data->val_out = adapter->phy_regs.lpa;
4901 data->val_out = adapter->phy_regs.expansion;
4904 data->val_out = adapter->phy_regs.ctrl1000;
4907 data->val_out = adapter->phy_regs.stat1000;
4910 data->val_out = adapter->phy_regs.estatus;
4923 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
4929 return e1000_mii_ioctl(netdev, ifr, cmd);
4935 static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc)
4937 struct e1000_hw *hw = &adapter->hw;
4942 /* copy MAC RARs to PHY RARs */
4943 e1000_copy_rx_addrs_to_phy_ich8lan(hw);
4945 /* copy MAC MTA to PHY MTA */
4946 for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) {
4947 mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i);
4948 e1e_wphy(hw, BM_MTA(i), (u16)(mac_reg & 0xFFFF));
4949 e1e_wphy(hw, BM_MTA(i) + 1, (u16)((mac_reg >> 16) & 0xFFFF));
4952 /* configure PHY Rx Control register */
4953 e1e_rphy(&adapter->hw, BM_RCTL, &phy_reg);
4954 mac_reg = er32(RCTL);
4955 if (mac_reg & E1000_RCTL_UPE)
4956 phy_reg |= BM_RCTL_UPE;
4957 if (mac_reg & E1000_RCTL_MPE)
4958 phy_reg |= BM_RCTL_MPE;
4959 phy_reg &= ~(BM_RCTL_MO_MASK);
4960 if (mac_reg & E1000_RCTL_MO_3)
4961 phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT)
4962 << BM_RCTL_MO_SHIFT);
4963 if (mac_reg & E1000_RCTL_BAM)
4964 phy_reg |= BM_RCTL_BAM;
4965 if (mac_reg & E1000_RCTL_PMCF)
4966 phy_reg |= BM_RCTL_PMCF;
4967 mac_reg = er32(CTRL);
4968 if (mac_reg & E1000_CTRL_RFCE)
4969 phy_reg |= BM_RCTL_RFCE;
4970 e1e_wphy(&adapter->hw, BM_RCTL, phy_reg);
4972 /* enable PHY wakeup in MAC register */
4974 ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN);
4976 /* configure and enable PHY wakeup in PHY registers */
4977 e1e_wphy(&adapter->hw, BM_WUFC, wufc);
4978 e1e_wphy(&adapter->hw, BM_WUC, E1000_WUC_PME_EN);
4980 /* activate PHY wakeup */
4981 retval = hw->phy.ops.acquire(hw);
4983 e_err("Could not acquire PHY\n");
4986 e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
4987 (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT));
4988 retval = e1000e_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, &phy_reg);
4990 e_err("Could not read PHY page 769\n");
4993 phy_reg |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT;
4994 retval = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, phy_reg);
4996 e_err("Could not set PHY Host Wakeup bit\n");
4998 hw->phy.ops.release(hw);
5003 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake,
5006 struct net_device *netdev = pci_get_drvdata(pdev);
5007 struct e1000_adapter *adapter = netdev_priv(netdev);
5008 struct e1000_hw *hw = &adapter->hw;
5009 u32 ctrl, ctrl_ext, rctl, status;
5010 /* Runtime suspend should only enable wakeup for link changes */
5011 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol;
5014 netif_device_detach(netdev);
5016 if (netif_running(netdev)) {
5017 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
5018 e1000e_down(adapter);
5019 e1000_free_irq(adapter);
5021 e1000e_reset_interrupt_capability(adapter);
5023 retval = pci_save_state(pdev);
5027 status = er32(STATUS);
5028 if (status & E1000_STATUS_LU)
5029 wufc &= ~E1000_WUFC_LNKC;
5032 e1000_setup_rctl(adapter);
5033 e1000_set_multi(netdev);
5035 /* turn on all-multi mode if wake on multicast is enabled */
5036 if (wufc & E1000_WUFC_MC) {
5038 rctl |= E1000_RCTL_MPE;
5043 /* advertise wake from D3Cold */
5044 #define E1000_CTRL_ADVD3WUC 0x00100000
5045 /* phy power management enable */
5046 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5047 ctrl |= E1000_CTRL_ADVD3WUC;
5048 if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP))
5049 ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT;
5052 if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
5053 adapter->hw.phy.media_type ==
5054 e1000_media_type_internal_serdes) {
5055 /* keep the laser running in D3 */
5056 ctrl_ext = er32(CTRL_EXT);
5057 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA;
5058 ew32(CTRL_EXT, ctrl_ext);
5061 if (adapter->flags & FLAG_IS_ICH)
5062 e1000e_disable_gig_wol_ich8lan(&adapter->hw);
5064 /* Allow time for pending master requests to run */
5065 e1000e_disable_pcie_master(&adapter->hw);
5067 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
5068 /* enable wakeup by the PHY */
5069 retval = e1000_init_phy_wakeup(adapter, wufc);
5073 /* enable wakeup by the MAC */
5075 ew32(WUC, E1000_WUC_PME_EN);
5082 *enable_wake = !!wufc;
5084 /* make sure adapter isn't asleep if manageability is enabled */
5085 if ((adapter->flags & FLAG_MNG_PT_ENABLED) ||
5086 (hw->mac.ops.check_mng_mode(hw)))
5087 *enable_wake = true;
5089 if (adapter->hw.phy.type == e1000_phy_igp_3)
5090 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw);
5093 * Release control of h/w to f/w. If f/w is AMT enabled, this
5094 * would have already happened in close and is redundant.
5096 e1000_release_hw_control(adapter);
5098 pci_disable_device(pdev);
5103 static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake)
5105 if (sleep && wake) {
5106 pci_prepare_to_sleep(pdev);
5110 pci_wake_from_d3(pdev, wake);
5111 pci_set_power_state(pdev, PCI_D3hot);
5114 static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep,
5117 struct net_device *netdev = pci_get_drvdata(pdev);
5118 struct e1000_adapter *adapter = netdev_priv(netdev);
5121 * The pci-e switch on some quad port adapters will report a
5122 * correctable error when the MAC transitions from D0 to D3. To
5123 * prevent this we need to mask off the correctable errors on the
5124 * downstream port of the pci-e switch.
5126 if (adapter->flags & FLAG_IS_QUAD_PORT) {
5127 struct pci_dev *us_dev = pdev->bus->self;
5128 int pos = pci_find_capability(us_dev, PCI_CAP_ID_EXP);
5131 pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl);
5132 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL,
5133 (devctl & ~PCI_EXP_DEVCTL_CERE));
5135 e1000_power_off(pdev, sleep, wake);
5137 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl);
5139 e1000_power_off(pdev, sleep, wake);
5143 #ifdef CONFIG_PCIEASPM
5144 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
5146 pci_disable_link_state(pdev, state);
5149 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
5155 * Both device and parent should have the same ASPM setting.
5156 * Disable ASPM in downstream component first and then upstream.
5158 pos = pci_pcie_cap(pdev);
5159 pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, ®16);
5161 pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16);
5163 if (!pdev->bus->self)
5166 pos = pci_pcie_cap(pdev->bus->self);
5167 pci_read_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, ®16);
5169 pci_write_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, reg16);
5172 void e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
5174 dev_info(&pdev->dev, "Disabling ASPM %s %s\n",
5175 (state & PCIE_LINK_STATE_L0S) ? "L0s" : "",
5176 (state & PCIE_LINK_STATE_L1) ? "L1" : "");
5178 __e1000e_disable_aspm(pdev, state);
5181 #ifdef CONFIG_PM_OPS
5182 static bool e1000e_pm_ready(struct e1000_adapter *adapter)
5184 return !!adapter->tx_ring->buffer_info;
5187 static int __e1000_resume(struct pci_dev *pdev)
5189 struct net_device *netdev = pci_get_drvdata(pdev);
5190 struct e1000_adapter *adapter = netdev_priv(netdev);
5191 struct e1000_hw *hw = &adapter->hw;
5194 pci_set_power_state(pdev, PCI_D0);
5195 pci_restore_state(pdev);
5196 pci_save_state(pdev);
5197 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
5198 e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1);
5200 e1000e_set_interrupt_capability(adapter);
5201 if (netif_running(netdev)) {
5202 err = e1000_request_irq(adapter);
5207 e1000e_power_up_phy(adapter);
5209 /* report the system wakeup cause from S3/S4 */
5210 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
5213 e1e_rphy(&adapter->hw, BM_WUS, &phy_data);
5215 e_info("PHY Wakeup cause - %s\n",
5216 phy_data & E1000_WUS_EX ? "Unicast Packet" :
5217 phy_data & E1000_WUS_MC ? "Multicast Packet" :
5218 phy_data & E1000_WUS_BC ? "Broadcast Packet" :
5219 phy_data & E1000_WUS_MAG ? "Magic Packet" :
5220 phy_data & E1000_WUS_LNKC ? "Link Status "
5221 " Change" : "other");
5223 e1e_wphy(&adapter->hw, BM_WUS, ~0);
5225 u32 wus = er32(WUS);
5227 e_info("MAC Wakeup cause - %s\n",
5228 wus & E1000_WUS_EX ? "Unicast Packet" :
5229 wus & E1000_WUS_MC ? "Multicast Packet" :
5230 wus & E1000_WUS_BC ? "Broadcast Packet" :
5231 wus & E1000_WUS_MAG ? "Magic Packet" :
5232 wus & E1000_WUS_LNKC ? "Link Status Change" :
5238 e1000e_reset(adapter);
5240 e1000_init_manageability_pt(adapter);
5242 if (netif_running(netdev))
5245 netif_device_attach(netdev);
5248 * If the controller has AMT, do not set DRV_LOAD until the interface
5249 * is up. For all other cases, let the f/w know that the h/w is now
5250 * under the control of the driver.
5252 if (!(adapter->flags & FLAG_HAS_AMT))
5253 e1000_get_hw_control(adapter);
5258 #ifdef CONFIG_PM_SLEEP
5259 static int e1000_suspend(struct device *dev)
5261 struct pci_dev *pdev = to_pci_dev(dev);
5265 retval = __e1000_shutdown(pdev, &wake, false);
5267 e1000_complete_shutdown(pdev, true, wake);
5272 static int e1000_resume(struct device *dev)
5274 struct pci_dev *pdev = to_pci_dev(dev);
5275 struct net_device *netdev = pci_get_drvdata(pdev);
5276 struct e1000_adapter *adapter = netdev_priv(netdev);
5278 if (e1000e_pm_ready(adapter))
5279 adapter->idle_check = true;
5281 return __e1000_resume(pdev);
5283 #endif /* CONFIG_PM_SLEEP */
5285 #ifdef CONFIG_PM_RUNTIME
5286 static int e1000_runtime_suspend(struct device *dev)
5288 struct pci_dev *pdev = to_pci_dev(dev);
5289 struct net_device *netdev = pci_get_drvdata(pdev);
5290 struct e1000_adapter *adapter = netdev_priv(netdev);
5292 if (e1000e_pm_ready(adapter)) {
5295 __e1000_shutdown(pdev, &wake, true);
5301 static int e1000_idle(struct device *dev)
5303 struct pci_dev *pdev = to_pci_dev(dev);
5304 struct net_device *netdev = pci_get_drvdata(pdev);
5305 struct e1000_adapter *adapter = netdev_priv(netdev);
5307 if (!e1000e_pm_ready(adapter))
5310 if (adapter->idle_check) {
5311 adapter->idle_check = false;
5312 if (!e1000e_has_link(adapter))
5313 pm_schedule_suspend(dev, MSEC_PER_SEC);
5319 static int e1000_runtime_resume(struct device *dev)
5321 struct pci_dev *pdev = to_pci_dev(dev);
5322 struct net_device *netdev = pci_get_drvdata(pdev);
5323 struct e1000_adapter *adapter = netdev_priv(netdev);
5325 if (!e1000e_pm_ready(adapter))
5328 adapter->idle_check = !dev->power.runtime_auto;
5329 return __e1000_resume(pdev);
5331 #endif /* CONFIG_PM_RUNTIME */
5332 #endif /* CONFIG_PM_OPS */
5334 static void e1000_shutdown(struct pci_dev *pdev)
5338 __e1000_shutdown(pdev, &wake, false);
5340 if (system_state == SYSTEM_POWER_OFF)
5341 e1000_complete_shutdown(pdev, false, wake);
5344 #ifdef CONFIG_NET_POLL_CONTROLLER
5346 * Polling 'interrupt' - used by things like netconsole to send skbs
5347 * without having to re-enable interrupts. It's not called while
5348 * the interrupt routine is executing.
5350 static void e1000_netpoll(struct net_device *netdev)
5352 struct e1000_adapter *adapter = netdev_priv(netdev);
5354 disable_irq(adapter->pdev->irq);
5355 e1000_intr(adapter->pdev->irq, netdev);
5357 enable_irq(adapter->pdev->irq);
5362 * e1000_io_error_detected - called when PCI error is detected
5363 * @pdev: Pointer to PCI device
5364 * @state: The current pci connection state
5366 * This function is called after a PCI bus error affecting
5367 * this device has been detected.
5369 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
5370 pci_channel_state_t state)
5372 struct net_device *netdev = pci_get_drvdata(pdev);
5373 struct e1000_adapter *adapter = netdev_priv(netdev);
5375 netif_device_detach(netdev);
5377 if (state == pci_channel_io_perm_failure)
5378 return PCI_ERS_RESULT_DISCONNECT;
5380 if (netif_running(netdev))
5381 e1000e_down(adapter);
5382 pci_disable_device(pdev);
5384 /* Request a slot slot reset. */
5385 return PCI_ERS_RESULT_NEED_RESET;
5389 * e1000_io_slot_reset - called after the pci bus has been reset.
5390 * @pdev: Pointer to PCI device
5392 * Restart the card from scratch, as if from a cold-boot. Implementation
5393 * resembles the first-half of the e1000_resume routine.
5395 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
5397 struct net_device *netdev = pci_get_drvdata(pdev);
5398 struct e1000_adapter *adapter = netdev_priv(netdev);
5399 struct e1000_hw *hw = &adapter->hw;
5401 pci_ers_result_t result;
5403 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
5404 e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1);
5405 err = pci_enable_device_mem(pdev);
5408 "Cannot re-enable PCI device after reset.\n");
5409 result = PCI_ERS_RESULT_DISCONNECT;
5411 pci_set_master(pdev);
5412 pdev->state_saved = true;
5413 pci_restore_state(pdev);
5415 pci_enable_wake(pdev, PCI_D3hot, 0);
5416 pci_enable_wake(pdev, PCI_D3cold, 0);
5418 e1000e_reset(adapter);
5420 result = PCI_ERS_RESULT_RECOVERED;
5423 pci_cleanup_aer_uncorrect_error_status(pdev);
5429 * e1000_io_resume - called when traffic can start flowing again.
5430 * @pdev: Pointer to PCI device
5432 * This callback is called when the error recovery driver tells us that
5433 * its OK to resume normal operation. Implementation resembles the
5434 * second-half of the e1000_resume routine.
5436 static void e1000_io_resume(struct pci_dev *pdev)
5438 struct net_device *netdev = pci_get_drvdata(pdev);
5439 struct e1000_adapter *adapter = netdev_priv(netdev);
5441 e1000_init_manageability_pt(adapter);
5443 if (netif_running(netdev)) {
5444 if (e1000e_up(adapter)) {
5446 "can't bring device back up after reset\n");
5451 netif_device_attach(netdev);
5454 * If the controller has AMT, do not set DRV_LOAD until the interface
5455 * is up. For all other cases, let the f/w know that the h/w is now
5456 * under the control of the driver.
5458 if (!(adapter->flags & FLAG_HAS_AMT))
5459 e1000_get_hw_control(adapter);
5463 static void e1000_print_device_info(struct e1000_adapter *adapter)
5465 struct e1000_hw *hw = &adapter->hw;
5466 struct net_device *netdev = adapter->netdev;
5469 /* print bus type/speed/width info */
5470 e_info("(PCI Express:2.5GB/s:%s) %pM\n",
5472 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
5476 e_info("Intel(R) PRO/%s Network Connection\n",
5477 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000");
5478 e1000e_read_pba_num(hw, &pba_num);
5479 e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
5480 hw->mac.type, hw->phy.type, (pba_num >> 8), (pba_num & 0xff));
5483 static void e1000_eeprom_checks(struct e1000_adapter *adapter)
5485 struct e1000_hw *hw = &adapter->hw;
5489 if (hw->mac.type != e1000_82573)
5492 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf);
5493 if (!ret_val && (!(le16_to_cpu(buf) & (1 << 0)))) {
5494 /* Deep Smart Power Down (DSPD) */
5495 dev_warn(&adapter->pdev->dev,
5496 "Warning: detected DSPD enabled in EEPROM\n");
5500 static const struct net_device_ops e1000e_netdev_ops = {
5501 .ndo_open = e1000_open,
5502 .ndo_stop = e1000_close,
5503 .ndo_start_xmit = e1000_xmit_frame,
5504 .ndo_get_stats = e1000_get_stats,
5505 .ndo_set_multicast_list = e1000_set_multi,
5506 .ndo_set_mac_address = e1000_set_mac,
5507 .ndo_change_mtu = e1000_change_mtu,
5508 .ndo_do_ioctl = e1000_ioctl,
5509 .ndo_tx_timeout = e1000_tx_timeout,
5510 .ndo_validate_addr = eth_validate_addr,
5512 .ndo_vlan_rx_register = e1000_vlan_rx_register,
5513 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid,
5514 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid,
5515 #ifdef CONFIG_NET_POLL_CONTROLLER
5516 .ndo_poll_controller = e1000_netpoll,
5521 * e1000_probe - Device Initialization Routine
5522 * @pdev: PCI device information struct
5523 * @ent: entry in e1000_pci_tbl
5525 * Returns 0 on success, negative on failure
5527 * e1000_probe initializes an adapter identified by a pci_dev structure.
5528 * The OS initialization, configuring of the adapter private structure,
5529 * and a hardware reset occur.
5531 static int __devinit e1000_probe(struct pci_dev *pdev,
5532 const struct pci_device_id *ent)
5534 struct net_device *netdev;
5535 struct e1000_adapter *adapter;
5536 struct e1000_hw *hw;
5537 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data];
5538 resource_size_t mmio_start, mmio_len;
5539 resource_size_t flash_start, flash_len;
5541 static int cards_found;
5542 int i, err, pci_using_dac;
5543 u16 eeprom_data = 0;
5544 u16 eeprom_apme_mask = E1000_EEPROM_APME;
5546 if (ei->flags2 & FLAG2_DISABLE_ASPM_L1)
5547 e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1);
5549 err = pci_enable_device_mem(pdev);
5554 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
5556 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
5560 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
5562 err = dma_set_coherent_mask(&pdev->dev,
5565 dev_err(&pdev->dev, "No usable DMA "
5566 "configuration, aborting\n");
5572 err = pci_request_selected_regions_exclusive(pdev,
5573 pci_select_bars(pdev, IORESOURCE_MEM),
5574 e1000e_driver_name);
5578 /* AER (Advanced Error Reporting) hooks */
5579 pci_enable_pcie_error_reporting(pdev);
5581 pci_set_master(pdev);
5582 /* PCI config space info */
5583 err = pci_save_state(pdev);
5585 goto err_alloc_etherdev;
5588 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
5590 goto err_alloc_etherdev;
5592 SET_NETDEV_DEV(netdev, &pdev->dev);
5594 netdev->irq = pdev->irq;
5596 pci_set_drvdata(pdev, netdev);
5597 adapter = netdev_priv(netdev);
5599 adapter->netdev = netdev;
5600 adapter->pdev = pdev;
5602 adapter->pba = ei->pba;
5603 adapter->flags = ei->flags;
5604 adapter->flags2 = ei->flags2;
5605 adapter->hw.adapter = adapter;
5606 adapter->hw.mac.type = ei->mac;
5607 adapter->max_hw_frame_size = ei->max_hw_frame_size;
5608 adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1;
5610 mmio_start = pci_resource_start(pdev, 0);
5611 mmio_len = pci_resource_len(pdev, 0);
5614 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
5615 if (!adapter->hw.hw_addr)
5618 if ((adapter->flags & FLAG_HAS_FLASH) &&
5619 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
5620 flash_start = pci_resource_start(pdev, 1);
5621 flash_len = pci_resource_len(pdev, 1);
5622 adapter->hw.flash_address = ioremap(flash_start, flash_len);
5623 if (!adapter->hw.flash_address)
5627 /* construct the net_device struct */
5628 netdev->netdev_ops = &e1000e_netdev_ops;
5629 e1000e_set_ethtool_ops(netdev);
5630 netdev->watchdog_timeo = 5 * HZ;
5631 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
5632 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
5634 netdev->mem_start = mmio_start;
5635 netdev->mem_end = mmio_start + mmio_len;
5637 adapter->bd_number = cards_found++;
5639 e1000e_check_options(adapter);
5641 /* setup adapter struct */
5642 err = e1000_sw_init(adapter);
5648 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
5649 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
5650 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
5652 err = ei->get_variants(adapter);
5656 if ((adapter->flags & FLAG_IS_ICH) &&
5657 (adapter->flags & FLAG_READ_ONLY_NVM))
5658 e1000e_write_protect_nvm_ich8lan(&adapter->hw);
5660 hw->mac.ops.get_bus_info(&adapter->hw);
5662 adapter->hw.phy.autoneg_wait_to_complete = 0;
5664 /* Copper options */
5665 if (adapter->hw.phy.media_type == e1000_media_type_copper) {
5666 adapter->hw.phy.mdix = AUTO_ALL_MODES;
5667 adapter->hw.phy.disable_polarity_correction = 0;
5668 adapter->hw.phy.ms_type = e1000_ms_hw_default;
5671 if (e1000_check_reset_block(&adapter->hw))
5672 e_info("PHY reset is blocked due to SOL/IDER session.\n");
5674 netdev->features = NETIF_F_SG |
5676 NETIF_F_HW_VLAN_TX |
5679 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
5680 netdev->features |= NETIF_F_HW_VLAN_FILTER;
5682 netdev->features |= NETIF_F_TSO;
5683 netdev->features |= NETIF_F_TSO6;
5685 netdev->vlan_features |= NETIF_F_TSO;
5686 netdev->vlan_features |= NETIF_F_TSO6;
5687 netdev->vlan_features |= NETIF_F_HW_CSUM;
5688 netdev->vlan_features |= NETIF_F_SG;
5691 netdev->features |= NETIF_F_HIGHDMA;
5693 if (e1000e_enable_mng_pass_thru(&adapter->hw))
5694 adapter->flags |= FLAG_MNG_PT_ENABLED;
5697 * before reading the NVM, reset the controller to
5698 * put the device in a known good starting state
5700 adapter->hw.mac.ops.reset_hw(&adapter->hw);
5703 * systems with ASPM and others may see the checksum fail on the first
5704 * attempt. Let's give it a few tries
5707 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0)
5710 e_err("The NVM Checksum Is Not Valid\n");
5716 e1000_eeprom_checks(adapter);
5718 /* copy the MAC address */
5719 if (e1000e_read_mac_addr(&adapter->hw))
5720 e_err("NVM Read Error while reading MAC address\n");
5722 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
5723 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
5725 if (!is_valid_ether_addr(netdev->perm_addr)) {
5726 e_err("Invalid MAC Address: %pM\n", netdev->perm_addr);
5731 init_timer(&adapter->watchdog_timer);
5732 adapter->watchdog_timer.function = &e1000_watchdog;
5733 adapter->watchdog_timer.data = (unsigned long) adapter;
5735 init_timer(&adapter->phy_info_timer);
5736 adapter->phy_info_timer.function = &e1000_update_phy_info;
5737 adapter->phy_info_timer.data = (unsigned long) adapter;
5739 INIT_WORK(&adapter->reset_task, e1000_reset_task);
5740 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
5741 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround);
5742 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task);
5743 INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang);
5745 /* Initialize link parameters. User can change them with ethtool */
5746 adapter->hw.mac.autoneg = 1;
5747 adapter->fc_autoneg = 1;
5748 adapter->hw.fc.requested_mode = e1000_fc_default;
5749 adapter->hw.fc.current_mode = e1000_fc_default;
5750 adapter->hw.phy.autoneg_advertised = 0x2f;
5752 /* ring size defaults */
5753 adapter->rx_ring->count = 256;
5754 adapter->tx_ring->count = 256;
5757 * Initial Wake on LAN setting - If APM wake is enabled in
5758 * the EEPROM, enable the ACPI Magic Packet filter
5760 if (adapter->flags & FLAG_APME_IN_WUC) {
5761 /* APME bit in EEPROM is mapped to WUC.APME */
5762 eeprom_data = er32(WUC);
5763 eeprom_apme_mask = E1000_WUC_APME;
5764 if (eeprom_data & E1000_WUC_PHY_WAKE)
5765 adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP;
5766 } else if (adapter->flags & FLAG_APME_IN_CTRL3) {
5767 if (adapter->flags & FLAG_APME_CHECK_PORT_B &&
5768 (adapter->hw.bus.func == 1))
5769 e1000_read_nvm(&adapter->hw,
5770 NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
5772 e1000_read_nvm(&adapter->hw,
5773 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
5776 /* fetch WoL from EEPROM */
5777 if (eeprom_data & eeprom_apme_mask)
5778 adapter->eeprom_wol |= E1000_WUFC_MAG;
5781 * now that we have the eeprom settings, apply the special cases
5782 * where the eeprom may be wrong or the board simply won't support
5783 * wake on lan on a particular port
5785 if (!(adapter->flags & FLAG_HAS_WOL))
5786 adapter->eeprom_wol = 0;
5788 /* initialize the wol settings based on the eeprom settings */
5789 adapter->wol = adapter->eeprom_wol;
5790 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
5792 /* save off EEPROM version number */
5793 e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers);
5795 /* reset the hardware with the new settings */
5796 e1000e_reset(adapter);
5799 * If the controller has AMT, do not set DRV_LOAD until the interface
5800 * is up. For all other cases, let the f/w know that the h/w is now
5801 * under the control of the driver.
5803 if (!(adapter->flags & FLAG_HAS_AMT))
5804 e1000_get_hw_control(adapter);
5806 strcpy(netdev->name, "eth%d");
5807 err = register_netdev(netdev);
5811 /* carrier off reporting is important to ethtool even BEFORE open */
5812 netif_carrier_off(netdev);
5814 e1000_print_device_info(adapter);
5816 if (pci_dev_run_wake(pdev)) {
5817 pm_runtime_set_active(&pdev->dev);
5818 pm_runtime_enable(&pdev->dev);
5820 pm_schedule_suspend(&pdev->dev, MSEC_PER_SEC);
5825 if (!(adapter->flags & FLAG_HAS_AMT))
5826 e1000_release_hw_control(adapter);
5828 if (!e1000_check_reset_block(&adapter->hw))
5829 e1000_phy_hw_reset(&adapter->hw);
5832 kfree(adapter->tx_ring);
5833 kfree(adapter->rx_ring);
5835 if (adapter->hw.flash_address)
5836 iounmap(adapter->hw.flash_address);
5837 e1000e_reset_interrupt_capability(adapter);
5839 iounmap(adapter->hw.hw_addr);
5841 free_netdev(netdev);
5843 pci_release_selected_regions(pdev,
5844 pci_select_bars(pdev, IORESOURCE_MEM));
5847 pci_disable_device(pdev);
5852 * e1000_remove - Device Removal Routine
5853 * @pdev: PCI device information struct
5855 * e1000_remove is called by the PCI subsystem to alert the driver
5856 * that it should release a PCI device. The could be caused by a
5857 * Hot-Plug event, or because the driver is going to be removed from
5860 static void __devexit e1000_remove(struct pci_dev *pdev)
5862 struct net_device *netdev = pci_get_drvdata(pdev);
5863 struct e1000_adapter *adapter = netdev_priv(netdev);
5864 bool down = test_bit(__E1000_DOWN, &adapter->state);
5866 pm_runtime_get_sync(&pdev->dev);
5869 * flush_scheduled work may reschedule our watchdog task, so
5870 * explicitly disable watchdog tasks from being rescheduled
5873 set_bit(__E1000_DOWN, &adapter->state);
5874 del_timer_sync(&adapter->watchdog_timer);
5875 del_timer_sync(&adapter->phy_info_timer);
5877 cancel_work_sync(&adapter->reset_task);
5878 cancel_work_sync(&adapter->watchdog_task);
5879 cancel_work_sync(&adapter->downshift_task);
5880 cancel_work_sync(&adapter->update_phy_task);
5881 cancel_work_sync(&adapter->print_hang_task);
5882 flush_scheduled_work();
5884 if (!(netdev->flags & IFF_UP))
5885 e1000_power_down_phy(adapter);
5887 /* Don't lie to e1000_close() down the road. */
5889 clear_bit(__E1000_DOWN, &adapter->state);
5890 unregister_netdev(netdev);
5892 if (pci_dev_run_wake(pdev)) {
5893 pm_runtime_disable(&pdev->dev);
5894 pm_runtime_set_suspended(&pdev->dev);
5896 pm_runtime_put_noidle(&pdev->dev);
5899 * Release control of h/w to f/w. If f/w is AMT enabled, this
5900 * would have already happened in close and is redundant.
5902 e1000_release_hw_control(adapter);
5904 e1000e_reset_interrupt_capability(adapter);
5905 kfree(adapter->tx_ring);
5906 kfree(adapter->rx_ring);
5908 iounmap(adapter->hw.hw_addr);
5909 if (adapter->hw.flash_address)
5910 iounmap(adapter->hw.flash_address);
5911 pci_release_selected_regions(pdev,
5912 pci_select_bars(pdev, IORESOURCE_MEM));
5914 free_netdev(netdev);
5917 pci_disable_pcie_error_reporting(pdev);
5919 pci_disable_device(pdev);
5922 /* PCI Error Recovery (ERS) */
5923 static struct pci_error_handlers e1000_err_handler = {
5924 .error_detected = e1000_io_error_detected,
5925 .slot_reset = e1000_io_slot_reset,
5926 .resume = e1000_io_resume,
5929 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = {
5930 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 },
5931 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 },
5932 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 },
5933 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 },
5934 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 },
5935 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 },
5936 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 },
5937 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 },
5938 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 },
5940 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 },
5941 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 },
5942 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 },
5943 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 },
5945 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 },
5946 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 },
5947 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 },
5949 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 },
5950 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 },
5951 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 },
5953 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT),
5954 board_80003es2lan },
5955 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT),
5956 board_80003es2lan },
5957 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT),
5958 board_80003es2lan },
5959 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT),
5960 board_80003es2lan },
5962 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan },
5963 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan },
5964 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan },
5965 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan },
5966 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan },
5967 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan },
5968 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan },
5969 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan },
5971 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan },
5972 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan },
5973 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan },
5974 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan },
5975 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan },
5976 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan },
5977 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan },
5978 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan },
5979 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan },
5981 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan },
5982 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan },
5983 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan },
5985 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan },
5986 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan },
5987 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan },
5989 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan },
5990 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan },
5991 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan },
5992 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan },
5994 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan },
5995 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan },
5997 { } /* terminate list */
5999 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
6001 #ifdef CONFIG_PM_OPS
6002 static const struct dev_pm_ops e1000_pm_ops = {
6003 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume)
6004 SET_RUNTIME_PM_OPS(e1000_runtime_suspend,
6005 e1000_runtime_resume, e1000_idle)
6009 /* PCI Device API Driver */
6010 static struct pci_driver e1000_driver = {
6011 .name = e1000e_driver_name,
6012 .id_table = e1000_pci_tbl,
6013 .probe = e1000_probe,
6014 .remove = __devexit_p(e1000_remove),
6015 #ifdef CONFIG_PM_OPS
6016 .driver.pm = &e1000_pm_ops,
6018 .shutdown = e1000_shutdown,
6019 .err_handler = &e1000_err_handler
6023 * e1000_init_module - Driver Registration Routine
6025 * e1000_init_module is the first routine called when the driver is
6026 * loaded. All it does is register with the PCI subsystem.
6028 static int __init e1000_init_module(void)
6031 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
6032 e1000e_driver_version);
6033 pr_info("Copyright (c) 1999 - 2010 Intel Corporation.\n");
6034 ret = pci_register_driver(&e1000_driver);
6038 module_init(e1000_init_module);
6041 * e1000_exit_module - Driver Exit Cleanup Routine
6043 * e1000_exit_module is called just before the driver is removed
6046 static void __exit e1000_exit_module(void)
6048 pci_unregister_driver(&e1000_driver);
6050 module_exit(e1000_exit_module);
6053 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
6054 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
6055 MODULE_LICENSE("GPL");
6056 MODULE_VERSION(DRV_VERSION);