1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2012 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/interrupt.h>
40 #include <linux/tcp.h>
41 #include <linux/ipv6.h>
42 #include <linux/slab.h>
43 #include <net/checksum.h>
44 #include <net/ip6_checksum.h>
45 #include <linux/mii.h>
46 #include <linux/ethtool.h>
47 #include <linux/if_vlan.h>
48 #include <linux/cpu.h>
49 #include <linux/smp.h>
50 #include <linux/pm_qos.h>
51 #include <linux/pm_runtime.h>
52 #include <linux/aer.h>
53 #include <linux/prefetch.h>
57 #define DRV_EXTRAVERSION "-k"
59 #define DRV_VERSION "2.0.0" DRV_EXTRAVERSION
60 char e1000e_driver_name[] = "e1000e";
61 const char e1000e_driver_version[] = DRV_VERSION;
63 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
64 static int debug = -1;
65 module_param(debug, int, 0);
66 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
68 static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state);
70 static const struct e1000_info *e1000_info_tbl[] = {
71 [board_82571] = &e1000_82571_info,
72 [board_82572] = &e1000_82572_info,
73 [board_82573] = &e1000_82573_info,
74 [board_82574] = &e1000_82574_info,
75 [board_82583] = &e1000_82583_info,
76 [board_80003es2lan] = &e1000_es2_info,
77 [board_ich8lan] = &e1000_ich8_info,
78 [board_ich9lan] = &e1000_ich9_info,
79 [board_ich10lan] = &e1000_ich10_info,
80 [board_pchlan] = &e1000_pch_info,
81 [board_pch2lan] = &e1000_pch2_info,
82 [board_pch_lpt] = &e1000_pch_lpt_info,
85 struct e1000_reg_info {
90 #define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */
91 #define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */
92 #define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */
93 #define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */
94 #define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */
96 #define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */
97 #define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */
98 #define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */
99 #define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */
100 #define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */
102 static const struct e1000_reg_info e1000_reg_info_tbl[] = {
104 /* General Registers */
105 {E1000_CTRL, "CTRL"},
106 {E1000_STATUS, "STATUS"},
107 {E1000_CTRL_EXT, "CTRL_EXT"},
109 /* Interrupt Registers */
113 {E1000_RCTL, "RCTL"},
114 {E1000_RDLEN(0), "RDLEN"},
115 {E1000_RDH(0), "RDH"},
116 {E1000_RDT(0), "RDT"},
117 {E1000_RDTR, "RDTR"},
118 {E1000_RXDCTL(0), "RXDCTL"},
120 {E1000_RDBAL(0), "RDBAL"},
121 {E1000_RDBAH(0), "RDBAH"},
122 {E1000_RDFH, "RDFH"},
123 {E1000_RDFT, "RDFT"},
124 {E1000_RDFHS, "RDFHS"},
125 {E1000_RDFTS, "RDFTS"},
126 {E1000_RDFPC, "RDFPC"},
129 {E1000_TCTL, "TCTL"},
130 {E1000_TDBAL(0), "TDBAL"},
131 {E1000_TDBAH(0), "TDBAH"},
132 {E1000_TDLEN(0), "TDLEN"},
133 {E1000_TDH(0), "TDH"},
134 {E1000_TDT(0), "TDT"},
135 {E1000_TIDV, "TIDV"},
136 {E1000_TXDCTL(0), "TXDCTL"},
137 {E1000_TADV, "TADV"},
138 {E1000_TARC(0), "TARC"},
139 {E1000_TDFH, "TDFH"},
140 {E1000_TDFT, "TDFT"},
141 {E1000_TDFHS, "TDFHS"},
142 {E1000_TDFTS, "TDFTS"},
143 {E1000_TDFPC, "TDFPC"},
145 /* List Terminator */
150 * e1000_regdump - register printout routine
152 static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo)
158 switch (reginfo->ofs) {
159 case E1000_RXDCTL(0):
160 for (n = 0; n < 2; n++)
161 regs[n] = __er32(hw, E1000_RXDCTL(n));
163 case E1000_TXDCTL(0):
164 for (n = 0; n < 2; n++)
165 regs[n] = __er32(hw, E1000_TXDCTL(n));
168 for (n = 0; n < 2; n++)
169 regs[n] = __er32(hw, E1000_TARC(n));
172 pr_info("%-15s %08x\n",
173 reginfo->name, __er32(hw, reginfo->ofs));
177 snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]");
178 pr_info("%-15s %08x %08x\n", rname, regs[0], regs[1]);
181 static void e1000e_dump_ps_pages(struct e1000_adapter *adapter,
182 struct e1000_buffer *bi)
185 struct e1000_ps_page *ps_page;
187 for (i = 0; i < adapter->rx_ps_pages; i++) {
188 ps_page = &bi->ps_pages[i];
191 pr_info("packet dump for ps_page %d:\n", i);
192 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS,
193 16, 1, page_address(ps_page->page),
200 * e1000e_dump - Print registers, Tx-ring and Rx-ring
202 static void e1000e_dump(struct e1000_adapter *adapter)
204 struct net_device *netdev = adapter->netdev;
205 struct e1000_hw *hw = &adapter->hw;
206 struct e1000_reg_info *reginfo;
207 struct e1000_ring *tx_ring = adapter->tx_ring;
208 struct e1000_tx_desc *tx_desc;
213 struct e1000_buffer *buffer_info;
214 struct e1000_ring *rx_ring = adapter->rx_ring;
215 union e1000_rx_desc_packet_split *rx_desc_ps;
216 union e1000_rx_desc_extended *rx_desc;
226 if (!netif_msg_hw(adapter))
229 /* Print netdevice Info */
231 dev_info(&adapter->pdev->dev, "Net device Info\n");
232 pr_info("Device Name state trans_start last_rx\n");
233 pr_info("%-15s %016lX %016lX %016lX\n",
234 netdev->name, netdev->state, netdev->trans_start,
238 /* Print Registers */
239 dev_info(&adapter->pdev->dev, "Register Dump\n");
240 pr_info(" Register Name Value\n");
241 for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl;
242 reginfo->name; reginfo++) {
243 e1000_regdump(hw, reginfo);
246 /* Print Tx Ring Summary */
247 if (!netdev || !netif_running(netdev))
250 dev_info(&adapter->pdev->dev, "Tx Ring Summary\n");
251 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
252 buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean];
253 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n",
254 0, tx_ring->next_to_use, tx_ring->next_to_clean,
255 (unsigned long long)buffer_info->dma,
257 buffer_info->next_to_watch,
258 (unsigned long long)buffer_info->time_stamp);
261 if (!netif_msg_tx_done(adapter))
262 goto rx_ring_summary;
264 dev_info(&adapter->pdev->dev, "Tx Ring Dump\n");
266 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
268 * Legacy Transmit Descriptor
269 * +--------------------------------------------------------------+
270 * 0 | Buffer Address [63:0] (Reserved on Write Back) |
271 * +--------------------------------------------------------------+
272 * 8 | Special | CSS | Status | CMD | CSO | Length |
273 * +--------------------------------------------------------------+
274 * 63 48 47 36 35 32 31 24 23 16 15 0
276 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
277 * 63 48 47 40 39 32 31 16 15 8 7 0
278 * +----------------------------------------------------------------+
279 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
280 * +----------------------------------------------------------------+
281 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
282 * +----------------------------------------------------------------+
283 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
285 * Extended Data Descriptor (DTYP=0x1)
286 * +----------------------------------------------------------------+
287 * 0 | Buffer Address [63:0] |
288 * +----------------------------------------------------------------+
289 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
290 * +----------------------------------------------------------------+
291 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
293 pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n");
294 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n");
295 pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Data format\n");
296 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
297 const char *next_desc;
298 tx_desc = E1000_TX_DESC(*tx_ring, i);
299 buffer_info = &tx_ring->buffer_info[i];
300 u0 = (struct my_u0 *)tx_desc;
301 if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean)
302 next_desc = " NTC/U";
303 else if (i == tx_ring->next_to_use)
305 else if (i == tx_ring->next_to_clean)
309 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n",
310 (!(le64_to_cpu(u0->b) & (1 << 29)) ? 'l' :
311 ((le64_to_cpu(u0->b) & (1 << 20)) ? 'd' : 'c')),
313 (unsigned long long)le64_to_cpu(u0->a),
314 (unsigned long long)le64_to_cpu(u0->b),
315 (unsigned long long)buffer_info->dma,
316 buffer_info->length, buffer_info->next_to_watch,
317 (unsigned long long)buffer_info->time_stamp,
318 buffer_info->skb, next_desc);
320 if (netif_msg_pktdata(adapter) && buffer_info->skb)
321 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS,
322 16, 1, buffer_info->skb->data,
323 buffer_info->skb->len, true);
326 /* Print Rx Ring Summary */
328 dev_info(&adapter->pdev->dev, "Rx Ring Summary\n");
329 pr_info("Queue [NTU] [NTC]\n");
330 pr_info(" %5d %5X %5X\n",
331 0, rx_ring->next_to_use, rx_ring->next_to_clean);
334 if (!netif_msg_rx_status(adapter))
337 dev_info(&adapter->pdev->dev, "Rx Ring Dump\n");
338 switch (adapter->rx_ps_pages) {
342 /* [Extended] Packet Split Receive Descriptor Format
344 * +-----------------------------------------------------+
345 * 0 | Buffer Address 0 [63:0] |
346 * +-----------------------------------------------------+
347 * 8 | Buffer Address 1 [63:0] |
348 * +-----------------------------------------------------+
349 * 16 | Buffer Address 2 [63:0] |
350 * +-----------------------------------------------------+
351 * 24 | Buffer Address 3 [63:0] |
352 * +-----------------------------------------------------+
354 pr_info("R [desc] [buffer 0 63:0 ] [buffer 1 63:0 ] [buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] [bi->skb] <-- Ext Pkt Split format\n");
355 /* [Extended] Receive Descriptor (Write-Back) Format
357 * 63 48 47 32 31 13 12 8 7 4 3 0
358 * +------------------------------------------------------+
359 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
360 * | Checksum | Ident | | Queue | | Type |
361 * +------------------------------------------------------+
362 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
363 * +------------------------------------------------------+
364 * 63 48 47 32 31 20 19 0
366 pr_info("RWB[desc] [ck ipid mrqhsh] [vl l0 ee es] [ l3 l2 l1 hs] [reserved ] ---------------- [bi->skb] <-- Ext Rx Write-Back format\n");
367 for (i = 0; i < rx_ring->count; i++) {
368 const char *next_desc;
369 buffer_info = &rx_ring->buffer_info[i];
370 rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i);
371 u1 = (struct my_u1 *)rx_desc_ps;
373 le32_to_cpu(rx_desc_ps->wb.middle.status_error);
375 if (i == rx_ring->next_to_use)
377 else if (i == rx_ring->next_to_clean)
382 if (staterr & E1000_RXD_STAT_DD) {
383 /* Descriptor Done */
384 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n",
386 (unsigned long long)le64_to_cpu(u1->a),
387 (unsigned long long)le64_to_cpu(u1->b),
388 (unsigned long long)le64_to_cpu(u1->c),
389 (unsigned long long)le64_to_cpu(u1->d),
390 buffer_info->skb, next_desc);
392 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n",
394 (unsigned long long)le64_to_cpu(u1->a),
395 (unsigned long long)le64_to_cpu(u1->b),
396 (unsigned long long)le64_to_cpu(u1->c),
397 (unsigned long long)le64_to_cpu(u1->d),
398 (unsigned long long)buffer_info->dma,
399 buffer_info->skb, next_desc);
401 if (netif_msg_pktdata(adapter))
402 e1000e_dump_ps_pages(adapter,
409 /* Extended Receive Descriptor (Read) Format
411 * +-----------------------------------------------------+
412 * 0 | Buffer Address [63:0] |
413 * +-----------------------------------------------------+
415 * +-----------------------------------------------------+
417 pr_info("R [desc] [buf addr 63:0 ] [reserved 63:0 ] [bi->dma ] [bi->skb] <-- Ext (Read) format\n");
418 /* Extended Receive Descriptor (Write-Back) Format
420 * 63 48 47 32 31 24 23 4 3 0
421 * +------------------------------------------------------+
423 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS |
424 * | Packet | IP | | | Type |
425 * | Checksum | Ident | | | |
426 * +------------------------------------------------------+
427 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
428 * +------------------------------------------------------+
429 * 63 48 47 32 31 20 19 0
431 pr_info("RWB[desc] [cs ipid mrq] [vt ln xe xs] [bi->skb] <-- Ext (Write-Back) format\n");
433 for (i = 0; i < rx_ring->count; i++) {
434 const char *next_desc;
436 buffer_info = &rx_ring->buffer_info[i];
437 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
438 u1 = (struct my_u1 *)rx_desc;
439 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
441 if (i == rx_ring->next_to_use)
443 else if (i == rx_ring->next_to_clean)
448 if (staterr & E1000_RXD_STAT_DD) {
449 /* Descriptor Done */
450 pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n",
452 (unsigned long long)le64_to_cpu(u1->a),
453 (unsigned long long)le64_to_cpu(u1->b),
454 buffer_info->skb, next_desc);
456 pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n",
458 (unsigned long long)le64_to_cpu(u1->a),
459 (unsigned long long)le64_to_cpu(u1->b),
460 (unsigned long long)buffer_info->dma,
461 buffer_info->skb, next_desc);
463 if (netif_msg_pktdata(adapter) &&
465 print_hex_dump(KERN_INFO, "",
466 DUMP_PREFIX_ADDRESS, 16,
468 buffer_info->skb->data,
469 adapter->rx_buffer_len,
477 * e1000_desc_unused - calculate if we have unused descriptors
479 static int e1000_desc_unused(struct e1000_ring *ring)
481 if (ring->next_to_clean > ring->next_to_use)
482 return ring->next_to_clean - ring->next_to_use - 1;
484 return ring->count + ring->next_to_clean - ring->next_to_use - 1;
488 * e1000_receive_skb - helper function to handle Rx indications
489 * @adapter: board private structure
490 * @status: descriptor status field as written by hardware
491 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
492 * @skb: pointer to sk_buff to be indicated to stack
494 static void e1000_receive_skb(struct e1000_adapter *adapter,
495 struct net_device *netdev, struct sk_buff *skb,
496 u8 status, __le16 vlan)
498 u16 tag = le16_to_cpu(vlan);
499 skb->protocol = eth_type_trans(skb, netdev);
501 if (status & E1000_RXD_STAT_VP)
502 __vlan_hwaccel_put_tag(skb, tag);
504 napi_gro_receive(&adapter->napi, skb);
508 * e1000_rx_checksum - Receive Checksum Offload
509 * @adapter: board private structure
510 * @status_err: receive descriptor status and error fields
511 * @csum: receive descriptor csum field
512 * @sk_buff: socket buffer with received data
514 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
517 u16 status = (u16)status_err;
518 u8 errors = (u8)(status_err >> 24);
520 skb_checksum_none_assert(skb);
522 /* Rx checksum disabled */
523 if (!(adapter->netdev->features & NETIF_F_RXCSUM))
526 /* Ignore Checksum bit is set */
527 if (status & E1000_RXD_STAT_IXSM)
530 /* TCP/UDP checksum error bit or IP checksum error bit is set */
531 if (errors & (E1000_RXD_ERR_TCPE | E1000_RXD_ERR_IPE)) {
532 /* let the stack verify checksum errors */
533 adapter->hw_csum_err++;
537 /* TCP/UDP Checksum has not been calculated */
538 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
541 /* It must be a TCP or UDP packet with a valid checksum */
542 skb->ip_summed = CHECKSUM_UNNECESSARY;
543 adapter->hw_csum_good++;
546 static void e1000e_update_rdt_wa(struct e1000_ring *rx_ring, unsigned int i)
548 struct e1000_adapter *adapter = rx_ring->adapter;
549 struct e1000_hw *hw = &adapter->hw;
550 s32 ret_val = __ew32_prepare(hw);
552 writel(i, rx_ring->tail);
554 if (unlikely(!ret_val && (i != readl(rx_ring->tail)))) {
555 u32 rctl = er32(RCTL);
556 ew32(RCTL, rctl & ~E1000_RCTL_EN);
557 e_err("ME firmware caused invalid RDT - resetting\n");
558 schedule_work(&adapter->reset_task);
562 static void e1000e_update_tdt_wa(struct e1000_ring *tx_ring, unsigned int i)
564 struct e1000_adapter *adapter = tx_ring->adapter;
565 struct e1000_hw *hw = &adapter->hw;
566 s32 ret_val = __ew32_prepare(hw);
568 writel(i, tx_ring->tail);
570 if (unlikely(!ret_val && (i != readl(tx_ring->tail)))) {
571 u32 tctl = er32(TCTL);
572 ew32(TCTL, tctl & ~E1000_TCTL_EN);
573 e_err("ME firmware caused invalid TDT - resetting\n");
574 schedule_work(&adapter->reset_task);
579 * e1000_alloc_rx_buffers - Replace used receive buffers
580 * @rx_ring: Rx descriptor ring
582 static void e1000_alloc_rx_buffers(struct e1000_ring *rx_ring,
583 int cleaned_count, gfp_t gfp)
585 struct e1000_adapter *adapter = rx_ring->adapter;
586 struct net_device *netdev = adapter->netdev;
587 struct pci_dev *pdev = adapter->pdev;
588 union e1000_rx_desc_extended *rx_desc;
589 struct e1000_buffer *buffer_info;
592 unsigned int bufsz = adapter->rx_buffer_len;
594 i = rx_ring->next_to_use;
595 buffer_info = &rx_ring->buffer_info[i];
597 while (cleaned_count--) {
598 skb = buffer_info->skb;
604 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp);
606 /* Better luck next round */
607 adapter->alloc_rx_buff_failed++;
611 buffer_info->skb = skb;
613 buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
614 adapter->rx_buffer_len,
616 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
617 dev_err(&pdev->dev, "Rx DMA map failed\n");
618 adapter->rx_dma_failed++;
622 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
623 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
625 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
627 * Force memory writes to complete before letting h/w
628 * know there are new descriptors to fetch. (Only
629 * applicable for weak-ordered memory model archs,
633 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
634 e1000e_update_rdt_wa(rx_ring, i);
636 writel(i, rx_ring->tail);
639 if (i == rx_ring->count)
641 buffer_info = &rx_ring->buffer_info[i];
644 rx_ring->next_to_use = i;
648 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
649 * @rx_ring: Rx descriptor ring
651 static void e1000_alloc_rx_buffers_ps(struct e1000_ring *rx_ring,
652 int cleaned_count, gfp_t gfp)
654 struct e1000_adapter *adapter = rx_ring->adapter;
655 struct net_device *netdev = adapter->netdev;
656 struct pci_dev *pdev = adapter->pdev;
657 union e1000_rx_desc_packet_split *rx_desc;
658 struct e1000_buffer *buffer_info;
659 struct e1000_ps_page *ps_page;
663 i = rx_ring->next_to_use;
664 buffer_info = &rx_ring->buffer_info[i];
666 while (cleaned_count--) {
667 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
669 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
670 ps_page = &buffer_info->ps_pages[j];
671 if (j >= adapter->rx_ps_pages) {
672 /* all unused desc entries get hw null ptr */
673 rx_desc->read.buffer_addr[j + 1] =
677 if (!ps_page->page) {
678 ps_page->page = alloc_page(gfp);
679 if (!ps_page->page) {
680 adapter->alloc_rx_buff_failed++;
683 ps_page->dma = dma_map_page(&pdev->dev,
687 if (dma_mapping_error(&pdev->dev,
689 dev_err(&adapter->pdev->dev,
690 "Rx DMA page map failed\n");
691 adapter->rx_dma_failed++;
696 * Refresh the desc even if buffer_addrs
697 * didn't change because each write-back
700 rx_desc->read.buffer_addr[j + 1] =
701 cpu_to_le64(ps_page->dma);
704 skb = __netdev_alloc_skb_ip_align(netdev,
705 adapter->rx_ps_bsize0,
709 adapter->alloc_rx_buff_failed++;
713 buffer_info->skb = skb;
714 buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
715 adapter->rx_ps_bsize0,
717 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
718 dev_err(&pdev->dev, "Rx DMA map failed\n");
719 adapter->rx_dma_failed++;
721 dev_kfree_skb_any(skb);
722 buffer_info->skb = NULL;
726 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
728 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
730 * Force memory writes to complete before letting h/w
731 * know there are new descriptors to fetch. (Only
732 * applicable for weak-ordered memory model archs,
736 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
737 e1000e_update_rdt_wa(rx_ring, i << 1);
739 writel(i << 1, rx_ring->tail);
743 if (i == rx_ring->count)
745 buffer_info = &rx_ring->buffer_info[i];
749 rx_ring->next_to_use = i;
753 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
754 * @rx_ring: Rx descriptor ring
755 * @cleaned_count: number of buffers to allocate this pass
758 static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring *rx_ring,
759 int cleaned_count, gfp_t gfp)
761 struct e1000_adapter *adapter = rx_ring->adapter;
762 struct net_device *netdev = adapter->netdev;
763 struct pci_dev *pdev = adapter->pdev;
764 union e1000_rx_desc_extended *rx_desc;
765 struct e1000_buffer *buffer_info;
768 unsigned int bufsz = 256 - 16 /* for skb_reserve */;
770 i = rx_ring->next_to_use;
771 buffer_info = &rx_ring->buffer_info[i];
773 while (cleaned_count--) {
774 skb = buffer_info->skb;
780 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp);
781 if (unlikely(!skb)) {
782 /* Better luck next round */
783 adapter->alloc_rx_buff_failed++;
787 buffer_info->skb = skb;
789 /* allocate a new page if necessary */
790 if (!buffer_info->page) {
791 buffer_info->page = alloc_page(gfp);
792 if (unlikely(!buffer_info->page)) {
793 adapter->alloc_rx_buff_failed++;
798 if (!buffer_info->dma)
799 buffer_info->dma = dma_map_page(&pdev->dev,
800 buffer_info->page, 0,
804 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
805 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
807 if (unlikely(++i == rx_ring->count))
809 buffer_info = &rx_ring->buffer_info[i];
812 if (likely(rx_ring->next_to_use != i)) {
813 rx_ring->next_to_use = i;
814 if (unlikely(i-- == 0))
815 i = (rx_ring->count - 1);
817 /* Force memory writes to complete before letting h/w
818 * know there are new descriptors to fetch. (Only
819 * applicable for weak-ordered memory model archs,
822 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
823 e1000e_update_rdt_wa(rx_ring, i);
825 writel(i, rx_ring->tail);
829 static inline void e1000_rx_hash(struct net_device *netdev, __le32 rss,
832 if (netdev->features & NETIF_F_RXHASH)
833 skb->rxhash = le32_to_cpu(rss);
837 * e1000_clean_rx_irq - Send received data up the network stack
838 * @rx_ring: Rx descriptor ring
840 * the return value indicates whether actual cleaning was done, there
841 * is no guarantee that everything was cleaned
843 static bool e1000_clean_rx_irq(struct e1000_ring *rx_ring, int *work_done,
846 struct e1000_adapter *adapter = rx_ring->adapter;
847 struct net_device *netdev = adapter->netdev;
848 struct pci_dev *pdev = adapter->pdev;
849 struct e1000_hw *hw = &adapter->hw;
850 union e1000_rx_desc_extended *rx_desc, *next_rxd;
851 struct e1000_buffer *buffer_info, *next_buffer;
854 int cleaned_count = 0;
855 bool cleaned = false;
856 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
858 i = rx_ring->next_to_clean;
859 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
860 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
861 buffer_info = &rx_ring->buffer_info[i];
863 while (staterr & E1000_RXD_STAT_DD) {
866 if (*work_done >= work_to_do)
869 rmb(); /* read descriptor and rx_buffer_info after status DD */
871 skb = buffer_info->skb;
872 buffer_info->skb = NULL;
874 prefetch(skb->data - NET_IP_ALIGN);
877 if (i == rx_ring->count)
879 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i);
882 next_buffer = &rx_ring->buffer_info[i];
886 dma_unmap_single(&pdev->dev,
888 adapter->rx_buffer_len,
890 buffer_info->dma = 0;
892 length = le16_to_cpu(rx_desc->wb.upper.length);
895 * !EOP means multiple descriptors were used to store a single
896 * packet, if that's the case we need to toss it. In fact, we
897 * need to toss every packet with the EOP bit clear and the
898 * next frame that _does_ have the EOP bit set, as it is by
899 * definition only a frame fragment
901 if (unlikely(!(staterr & E1000_RXD_STAT_EOP)))
902 adapter->flags2 |= FLAG2_IS_DISCARDING;
904 if (adapter->flags2 & FLAG2_IS_DISCARDING) {
905 /* All receives must fit into a single buffer */
906 e_dbg("Receive packet consumed multiple buffers\n");
908 buffer_info->skb = skb;
909 if (staterr & E1000_RXD_STAT_EOP)
910 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
914 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
915 !(netdev->features & NETIF_F_RXALL))) {
917 buffer_info->skb = skb;
921 /* adjust length to remove Ethernet CRC */
922 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
923 /* If configured to store CRC, don't subtract FCS,
924 * but keep the FCS bytes out of the total_rx_bytes
927 if (netdev->features & NETIF_F_RXFCS)
933 total_rx_bytes += length;
937 * code added for copybreak, this should improve
938 * performance for small packets with large amounts
939 * of reassembly being done in the stack
941 if (length < copybreak) {
942 struct sk_buff *new_skb =
943 netdev_alloc_skb_ip_align(netdev, length);
945 skb_copy_to_linear_data_offset(new_skb,
951 /* save the skb in buffer_info as good */
952 buffer_info->skb = skb;
955 /* else just continue with the old one */
957 /* end copybreak code */
958 skb_put(skb, length);
960 /* Receive Checksum Offload */
961 e1000_rx_checksum(adapter, staterr, skb);
963 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
965 e1000_receive_skb(adapter, netdev, skb, staterr,
966 rx_desc->wb.upper.vlan);
969 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
971 /* return some buffers to hardware, one at a time is too slow */
972 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
973 adapter->alloc_rx_buf(rx_ring, cleaned_count,
978 /* use prefetched values */
980 buffer_info = next_buffer;
982 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
984 rx_ring->next_to_clean = i;
986 cleaned_count = e1000_desc_unused(rx_ring);
988 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
990 adapter->total_rx_bytes += total_rx_bytes;
991 adapter->total_rx_packets += total_rx_packets;
995 static void e1000_put_txbuf(struct e1000_ring *tx_ring,
996 struct e1000_buffer *buffer_info)
998 struct e1000_adapter *adapter = tx_ring->adapter;
1000 if (buffer_info->dma) {
1001 if (buffer_info->mapped_as_page)
1002 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma,
1003 buffer_info->length, DMA_TO_DEVICE);
1005 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma,
1006 buffer_info->length, DMA_TO_DEVICE);
1007 buffer_info->dma = 0;
1009 if (buffer_info->skb) {
1010 dev_kfree_skb_any(buffer_info->skb);
1011 buffer_info->skb = NULL;
1013 buffer_info->time_stamp = 0;
1016 static void e1000_print_hw_hang(struct work_struct *work)
1018 struct e1000_adapter *adapter = container_of(work,
1019 struct e1000_adapter,
1021 struct net_device *netdev = adapter->netdev;
1022 struct e1000_ring *tx_ring = adapter->tx_ring;
1023 unsigned int i = tx_ring->next_to_clean;
1024 unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
1025 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop);
1026 struct e1000_hw *hw = &adapter->hw;
1027 u16 phy_status, phy_1000t_status, phy_ext_status;
1030 if (test_bit(__E1000_DOWN, &adapter->state))
1033 if (!adapter->tx_hang_recheck &&
1034 (adapter->flags2 & FLAG2_DMA_BURST)) {
1036 * May be block on write-back, flush and detect again
1037 * flush pending descriptor writebacks to memory
1039 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
1040 /* execute the writes immediately */
1043 * Due to rare timing issues, write to TIDV again to ensure
1044 * the write is successful
1046 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
1047 /* execute the writes immediately */
1049 adapter->tx_hang_recheck = true;
1052 /* Real hang detected */
1053 adapter->tx_hang_recheck = false;
1054 netif_stop_queue(netdev);
1056 e1e_rphy(hw, PHY_STATUS, &phy_status);
1057 e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status);
1058 e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status);
1060 pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status);
1062 /* detected Hardware unit hang */
1063 e_err("Detected Hardware Unit Hang:\n"
1066 " next_to_use <%x>\n"
1067 " next_to_clean <%x>\n"
1068 "buffer_info[next_to_clean]:\n"
1069 " time_stamp <%lx>\n"
1070 " next_to_watch <%x>\n"
1072 " next_to_watch.status <%x>\n"
1075 "PHY 1000BASE-T Status <%x>\n"
1076 "PHY Extended Status <%x>\n"
1077 "PCI Status <%x>\n",
1078 readl(tx_ring->head),
1079 readl(tx_ring->tail),
1080 tx_ring->next_to_use,
1081 tx_ring->next_to_clean,
1082 tx_ring->buffer_info[eop].time_stamp,
1085 eop_desc->upper.fields.status,
1092 /* Suggest workaround for known h/w issue */
1093 if ((hw->mac.type == e1000_pchlan) && (er32(CTRL) & E1000_CTRL_TFCE))
1094 e_err("Try turning off Tx pause (flow control) via ethtool\n");
1098 * e1000_clean_tx_irq - Reclaim resources after transmit completes
1099 * @tx_ring: Tx descriptor ring
1101 * the return value indicates whether actual cleaning was done, there
1102 * is no guarantee that everything was cleaned
1104 static bool e1000_clean_tx_irq(struct e1000_ring *tx_ring)
1106 struct e1000_adapter *adapter = tx_ring->adapter;
1107 struct net_device *netdev = adapter->netdev;
1108 struct e1000_hw *hw = &adapter->hw;
1109 struct e1000_tx_desc *tx_desc, *eop_desc;
1110 struct e1000_buffer *buffer_info;
1111 unsigned int i, eop;
1112 unsigned int count = 0;
1113 unsigned int total_tx_bytes = 0, total_tx_packets = 0;
1114 unsigned int bytes_compl = 0, pkts_compl = 0;
1116 i = tx_ring->next_to_clean;
1117 eop = tx_ring->buffer_info[i].next_to_watch;
1118 eop_desc = E1000_TX_DESC(*tx_ring, eop);
1120 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
1121 (count < tx_ring->count)) {
1122 bool cleaned = false;
1123 rmb(); /* read buffer_info after eop_desc */
1124 for (; !cleaned; count++) {
1125 tx_desc = E1000_TX_DESC(*tx_ring, i);
1126 buffer_info = &tx_ring->buffer_info[i];
1127 cleaned = (i == eop);
1130 total_tx_packets += buffer_info->segs;
1131 total_tx_bytes += buffer_info->bytecount;
1132 if (buffer_info->skb) {
1133 bytes_compl += buffer_info->skb->len;
1138 e1000_put_txbuf(tx_ring, buffer_info);
1139 tx_desc->upper.data = 0;
1142 if (i == tx_ring->count)
1146 if (i == tx_ring->next_to_use)
1148 eop = tx_ring->buffer_info[i].next_to_watch;
1149 eop_desc = E1000_TX_DESC(*tx_ring, eop);
1152 tx_ring->next_to_clean = i;
1154 netdev_completed_queue(netdev, pkts_compl, bytes_compl);
1156 #define TX_WAKE_THRESHOLD 32
1157 if (count && netif_carrier_ok(netdev) &&
1158 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
1159 /* Make sure that anybody stopping the queue after this
1160 * sees the new next_to_clean.
1164 if (netif_queue_stopped(netdev) &&
1165 !(test_bit(__E1000_DOWN, &adapter->state))) {
1166 netif_wake_queue(netdev);
1167 ++adapter->restart_queue;
1171 if (adapter->detect_tx_hung) {
1173 * Detect a transmit hang in hardware, this serializes the
1174 * check with the clearing of time_stamp and movement of i
1176 adapter->detect_tx_hung = false;
1177 if (tx_ring->buffer_info[i].time_stamp &&
1178 time_after(jiffies, tx_ring->buffer_info[i].time_stamp
1179 + (adapter->tx_timeout_factor * HZ)) &&
1180 !(er32(STATUS) & E1000_STATUS_TXOFF))
1181 schedule_work(&adapter->print_hang_task);
1183 adapter->tx_hang_recheck = false;
1185 adapter->total_tx_bytes += total_tx_bytes;
1186 adapter->total_tx_packets += total_tx_packets;
1187 return count < tx_ring->count;
1191 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
1192 * @rx_ring: Rx descriptor ring
1194 * the return value indicates whether actual cleaning was done, there
1195 * is no guarantee that everything was cleaned
1197 static bool e1000_clean_rx_irq_ps(struct e1000_ring *rx_ring, int *work_done,
1200 struct e1000_adapter *adapter = rx_ring->adapter;
1201 struct e1000_hw *hw = &adapter->hw;
1202 union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
1203 struct net_device *netdev = adapter->netdev;
1204 struct pci_dev *pdev = adapter->pdev;
1205 struct e1000_buffer *buffer_info, *next_buffer;
1206 struct e1000_ps_page *ps_page;
1207 struct sk_buff *skb;
1209 u32 length, staterr;
1210 int cleaned_count = 0;
1211 bool cleaned = false;
1212 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
1214 i = rx_ring->next_to_clean;
1215 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
1216 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1217 buffer_info = &rx_ring->buffer_info[i];
1219 while (staterr & E1000_RXD_STAT_DD) {
1220 if (*work_done >= work_to_do)
1223 skb = buffer_info->skb;
1224 rmb(); /* read descriptor and rx_buffer_info after status DD */
1226 /* in the packet split case this is header only */
1227 prefetch(skb->data - NET_IP_ALIGN);
1230 if (i == rx_ring->count)
1232 next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
1235 next_buffer = &rx_ring->buffer_info[i];
1239 dma_unmap_single(&pdev->dev, buffer_info->dma,
1240 adapter->rx_ps_bsize0, DMA_FROM_DEVICE);
1241 buffer_info->dma = 0;
1243 /* see !EOP comment in other Rx routine */
1244 if (!(staterr & E1000_RXD_STAT_EOP))
1245 adapter->flags2 |= FLAG2_IS_DISCARDING;
1247 if (adapter->flags2 & FLAG2_IS_DISCARDING) {
1248 e_dbg("Packet Split buffers didn't pick up the full packet\n");
1249 dev_kfree_skb_irq(skb);
1250 if (staterr & E1000_RXD_STAT_EOP)
1251 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
1255 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
1256 !(netdev->features & NETIF_F_RXALL))) {
1257 dev_kfree_skb_irq(skb);
1261 length = le16_to_cpu(rx_desc->wb.middle.length0);
1264 e_dbg("Last part of the packet spanning multiple descriptors\n");
1265 dev_kfree_skb_irq(skb);
1270 skb_put(skb, length);
1274 * this looks ugly, but it seems compiler issues make
1275 * it more efficient than reusing j
1277 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
1280 * page alloc/put takes too long and effects small
1281 * packet throughput, so unsplit small packets and
1282 * save the alloc/put only valid in softirq (napi)
1283 * context to call kmap_*
1285 if (l1 && (l1 <= copybreak) &&
1286 ((length + l1) <= adapter->rx_ps_bsize0)) {
1289 ps_page = &buffer_info->ps_pages[0];
1292 * there is no documentation about how to call
1293 * kmap_atomic, so we can't hold the mapping
1296 dma_sync_single_for_cpu(&pdev->dev,
1300 vaddr = kmap_atomic(ps_page->page);
1301 memcpy(skb_tail_pointer(skb), vaddr, l1);
1302 kunmap_atomic(vaddr);
1303 dma_sync_single_for_device(&pdev->dev,
1308 /* remove the CRC */
1309 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
1310 if (!(netdev->features & NETIF_F_RXFCS))
1319 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
1320 length = le16_to_cpu(rx_desc->wb.upper.length[j]);
1324 ps_page = &buffer_info->ps_pages[j];
1325 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
1328 skb_fill_page_desc(skb, j, ps_page->page, 0, length);
1329 ps_page->page = NULL;
1331 skb->data_len += length;
1332 skb->truesize += PAGE_SIZE;
1335 /* strip the ethernet crc, problem is we're using pages now so
1336 * this whole operation can get a little cpu intensive
1338 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
1339 if (!(netdev->features & NETIF_F_RXFCS))
1340 pskb_trim(skb, skb->len - 4);
1344 total_rx_bytes += skb->len;
1347 e1000_rx_checksum(adapter, staterr, skb);
1349 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
1351 if (rx_desc->wb.upper.header_status &
1352 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))
1353 adapter->rx_hdr_split++;
1355 e1000_receive_skb(adapter, netdev, skb,
1356 staterr, rx_desc->wb.middle.vlan);
1359 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
1360 buffer_info->skb = NULL;
1362 /* return some buffers to hardware, one at a time is too slow */
1363 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
1364 adapter->alloc_rx_buf(rx_ring, cleaned_count,
1369 /* use prefetched values */
1371 buffer_info = next_buffer;
1373 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1375 rx_ring->next_to_clean = i;
1377 cleaned_count = e1000_desc_unused(rx_ring);
1379 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
1381 adapter->total_rx_bytes += total_rx_bytes;
1382 adapter->total_rx_packets += total_rx_packets;
1387 * e1000_consume_page - helper function
1389 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
1394 skb->data_len += length;
1395 skb->truesize += PAGE_SIZE;
1399 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1400 * @adapter: board private structure
1402 * the return value indicates whether actual cleaning was done, there
1403 * is no guarantee that everything was cleaned
1405 static bool e1000_clean_jumbo_rx_irq(struct e1000_ring *rx_ring, int *work_done,
1408 struct e1000_adapter *adapter = rx_ring->adapter;
1409 struct net_device *netdev = adapter->netdev;
1410 struct pci_dev *pdev = adapter->pdev;
1411 union e1000_rx_desc_extended *rx_desc, *next_rxd;
1412 struct e1000_buffer *buffer_info, *next_buffer;
1413 u32 length, staterr;
1415 int cleaned_count = 0;
1416 bool cleaned = false;
1417 unsigned int total_rx_bytes=0, total_rx_packets=0;
1419 i = rx_ring->next_to_clean;
1420 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
1421 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
1422 buffer_info = &rx_ring->buffer_info[i];
1424 while (staterr & E1000_RXD_STAT_DD) {
1425 struct sk_buff *skb;
1427 if (*work_done >= work_to_do)
1430 rmb(); /* read descriptor and rx_buffer_info after status DD */
1432 skb = buffer_info->skb;
1433 buffer_info->skb = NULL;
1436 if (i == rx_ring->count)
1438 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i);
1441 next_buffer = &rx_ring->buffer_info[i];
1445 dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE,
1447 buffer_info->dma = 0;
1449 length = le16_to_cpu(rx_desc->wb.upper.length);
1451 /* errors is only valid for DD + EOP descriptors */
1452 if (unlikely((staterr & E1000_RXD_STAT_EOP) &&
1453 ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
1454 !(netdev->features & NETIF_F_RXALL)))) {
1455 /* recycle both page and skb */
1456 buffer_info->skb = skb;
1457 /* an error means any chain goes out the window too */
1458 if (rx_ring->rx_skb_top)
1459 dev_kfree_skb_irq(rx_ring->rx_skb_top);
1460 rx_ring->rx_skb_top = NULL;
1464 #define rxtop (rx_ring->rx_skb_top)
1465 if (!(staterr & E1000_RXD_STAT_EOP)) {
1466 /* this descriptor is only the beginning (or middle) */
1468 /* this is the beginning of a chain */
1470 skb_fill_page_desc(rxtop, 0, buffer_info->page,
1473 /* this is the middle of a chain */
1474 skb_fill_page_desc(rxtop,
1475 skb_shinfo(rxtop)->nr_frags,
1476 buffer_info->page, 0, length);
1477 /* re-use the skb, only consumed the page */
1478 buffer_info->skb = skb;
1480 e1000_consume_page(buffer_info, rxtop, length);
1484 /* end of the chain */
1485 skb_fill_page_desc(rxtop,
1486 skb_shinfo(rxtop)->nr_frags,
1487 buffer_info->page, 0, length);
1488 /* re-use the current skb, we only consumed the
1490 buffer_info->skb = skb;
1493 e1000_consume_page(buffer_info, skb, length);
1495 /* no chain, got EOP, this buf is the packet
1496 * copybreak to save the put_page/alloc_page */
1497 if (length <= copybreak &&
1498 skb_tailroom(skb) >= length) {
1500 vaddr = kmap_atomic(buffer_info->page);
1501 memcpy(skb_tail_pointer(skb), vaddr,
1503 kunmap_atomic(vaddr);
1504 /* re-use the page, so don't erase
1505 * buffer_info->page */
1506 skb_put(skb, length);
1508 skb_fill_page_desc(skb, 0,
1509 buffer_info->page, 0,
1511 e1000_consume_page(buffer_info, skb,
1517 /* Receive Checksum Offload */
1518 e1000_rx_checksum(adapter, staterr, skb);
1520 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
1522 /* probably a little skewed due to removing CRC */
1523 total_rx_bytes += skb->len;
1526 /* eth type trans needs skb->data to point to something */
1527 if (!pskb_may_pull(skb, ETH_HLEN)) {
1528 e_err("pskb_may_pull failed.\n");
1529 dev_kfree_skb_irq(skb);
1533 e1000_receive_skb(adapter, netdev, skb, staterr,
1534 rx_desc->wb.upper.vlan);
1537 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
1539 /* return some buffers to hardware, one at a time is too slow */
1540 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
1541 adapter->alloc_rx_buf(rx_ring, cleaned_count,
1546 /* use prefetched values */
1548 buffer_info = next_buffer;
1550 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
1552 rx_ring->next_to_clean = i;
1554 cleaned_count = e1000_desc_unused(rx_ring);
1556 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
1558 adapter->total_rx_bytes += total_rx_bytes;
1559 adapter->total_rx_packets += total_rx_packets;
1564 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1565 * @rx_ring: Rx descriptor ring
1567 static void e1000_clean_rx_ring(struct e1000_ring *rx_ring)
1569 struct e1000_adapter *adapter = rx_ring->adapter;
1570 struct e1000_buffer *buffer_info;
1571 struct e1000_ps_page *ps_page;
1572 struct pci_dev *pdev = adapter->pdev;
1575 /* Free all the Rx ring sk_buffs */
1576 for (i = 0; i < rx_ring->count; i++) {
1577 buffer_info = &rx_ring->buffer_info[i];
1578 if (buffer_info->dma) {
1579 if (adapter->clean_rx == e1000_clean_rx_irq)
1580 dma_unmap_single(&pdev->dev, buffer_info->dma,
1581 adapter->rx_buffer_len,
1583 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq)
1584 dma_unmap_page(&pdev->dev, buffer_info->dma,
1587 else if (adapter->clean_rx == e1000_clean_rx_irq_ps)
1588 dma_unmap_single(&pdev->dev, buffer_info->dma,
1589 adapter->rx_ps_bsize0,
1591 buffer_info->dma = 0;
1594 if (buffer_info->page) {
1595 put_page(buffer_info->page);
1596 buffer_info->page = NULL;
1599 if (buffer_info->skb) {
1600 dev_kfree_skb(buffer_info->skb);
1601 buffer_info->skb = NULL;
1604 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
1605 ps_page = &buffer_info->ps_pages[j];
1608 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
1611 put_page(ps_page->page);
1612 ps_page->page = NULL;
1616 /* there also may be some cached data from a chained receive */
1617 if (rx_ring->rx_skb_top) {
1618 dev_kfree_skb(rx_ring->rx_skb_top);
1619 rx_ring->rx_skb_top = NULL;
1622 /* Zero out the descriptor ring */
1623 memset(rx_ring->desc, 0, rx_ring->size);
1625 rx_ring->next_to_clean = 0;
1626 rx_ring->next_to_use = 0;
1627 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
1629 writel(0, rx_ring->head);
1630 if (rx_ring->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
1631 e1000e_update_rdt_wa(rx_ring, 0);
1633 writel(0, rx_ring->tail);
1636 static void e1000e_downshift_workaround(struct work_struct *work)
1638 struct e1000_adapter *adapter = container_of(work,
1639 struct e1000_adapter, downshift_task);
1641 if (test_bit(__E1000_DOWN, &adapter->state))
1644 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw);
1648 * e1000_intr_msi - Interrupt Handler
1649 * @irq: interrupt number
1650 * @data: pointer to a network interface device structure
1652 static irqreturn_t e1000_intr_msi(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 u32 icr = er32(ICR);
1660 * read ICR disables interrupts using IAM
1663 if (icr & E1000_ICR_LSC) {
1664 hw->mac.get_link_status = true;
1666 * ICH8 workaround-- Call gig speed drop workaround on cable
1667 * disconnect (LSC) before accessing any PHY registers
1669 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1670 (!(er32(STATUS) & E1000_STATUS_LU)))
1671 schedule_work(&adapter->downshift_task);
1674 * 80003ES2LAN workaround-- For packet buffer work-around on
1675 * link down event; disable receives here in the ISR and reset
1676 * adapter in watchdog
1678 if (netif_carrier_ok(netdev) &&
1679 adapter->flags & FLAG_RX_NEEDS_RESTART) {
1680 /* disable receives */
1681 u32 rctl = er32(RCTL);
1682 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1683 adapter->flags |= FLAG_RX_RESTART_NOW;
1685 /* guard against interrupt when we're going down */
1686 if (!test_bit(__E1000_DOWN, &adapter->state))
1687 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1690 if (napi_schedule_prep(&adapter->napi)) {
1691 adapter->total_tx_bytes = 0;
1692 adapter->total_tx_packets = 0;
1693 adapter->total_rx_bytes = 0;
1694 adapter->total_rx_packets = 0;
1695 __napi_schedule(&adapter->napi);
1702 * e1000_intr - Interrupt Handler
1703 * @irq: interrupt number
1704 * @data: pointer to a network interface device structure
1706 static irqreturn_t e1000_intr(int irq, void *data)
1708 struct net_device *netdev = data;
1709 struct e1000_adapter *adapter = netdev_priv(netdev);
1710 struct e1000_hw *hw = &adapter->hw;
1711 u32 rctl, icr = er32(ICR);
1713 if (!icr || test_bit(__E1000_DOWN, &adapter->state))
1714 return IRQ_NONE; /* Not our interrupt */
1717 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1718 * not set, then the adapter didn't send an interrupt
1720 if (!(icr & E1000_ICR_INT_ASSERTED))
1724 * Interrupt Auto-Mask...upon reading ICR,
1725 * interrupts are masked. No need for the
1729 if (icr & E1000_ICR_LSC) {
1730 hw->mac.get_link_status = true;
1732 * ICH8 workaround-- Call gig speed drop workaround on cable
1733 * disconnect (LSC) before accessing any PHY registers
1735 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1736 (!(er32(STATUS) & E1000_STATUS_LU)))
1737 schedule_work(&adapter->downshift_task);
1740 * 80003ES2LAN workaround--
1741 * For packet buffer work-around on link down event;
1742 * disable receives here in the ISR and
1743 * reset adapter in watchdog
1745 if (netif_carrier_ok(netdev) &&
1746 (adapter->flags & FLAG_RX_NEEDS_RESTART)) {
1747 /* disable receives */
1749 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1750 adapter->flags |= FLAG_RX_RESTART_NOW;
1752 /* guard against interrupt when we're going down */
1753 if (!test_bit(__E1000_DOWN, &adapter->state))
1754 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1757 if (napi_schedule_prep(&adapter->napi)) {
1758 adapter->total_tx_bytes = 0;
1759 adapter->total_tx_packets = 0;
1760 adapter->total_rx_bytes = 0;
1761 adapter->total_rx_packets = 0;
1762 __napi_schedule(&adapter->napi);
1768 static irqreturn_t e1000_msix_other(int irq, void *data)
1770 struct net_device *netdev = data;
1771 struct e1000_adapter *adapter = netdev_priv(netdev);
1772 struct e1000_hw *hw = &adapter->hw;
1773 u32 icr = er32(ICR);
1775 if (!(icr & E1000_ICR_INT_ASSERTED)) {
1776 if (!test_bit(__E1000_DOWN, &adapter->state))
1777 ew32(IMS, E1000_IMS_OTHER);
1781 if (icr & adapter->eiac_mask)
1782 ew32(ICS, (icr & adapter->eiac_mask));
1784 if (icr & E1000_ICR_OTHER) {
1785 if (!(icr & E1000_ICR_LSC))
1786 goto no_link_interrupt;
1787 hw->mac.get_link_status = true;
1788 /* guard against interrupt when we're going down */
1789 if (!test_bit(__E1000_DOWN, &adapter->state))
1790 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1794 if (!test_bit(__E1000_DOWN, &adapter->state))
1795 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER);
1801 static irqreturn_t e1000_intr_msix_tx(int irq, void *data)
1803 struct net_device *netdev = data;
1804 struct e1000_adapter *adapter = netdev_priv(netdev);
1805 struct e1000_hw *hw = &adapter->hw;
1806 struct e1000_ring *tx_ring = adapter->tx_ring;
1809 adapter->total_tx_bytes = 0;
1810 adapter->total_tx_packets = 0;
1812 if (!e1000_clean_tx_irq(tx_ring))
1813 /* Ring was not completely cleaned, so fire another interrupt */
1814 ew32(ICS, tx_ring->ims_val);
1819 static irqreturn_t e1000_intr_msix_rx(int irq, void *data)
1821 struct net_device *netdev = data;
1822 struct e1000_adapter *adapter = netdev_priv(netdev);
1823 struct e1000_ring *rx_ring = adapter->rx_ring;
1825 /* Write the ITR value calculated at the end of the
1826 * previous interrupt.
1828 if (rx_ring->set_itr) {
1829 writel(1000000000 / (rx_ring->itr_val * 256),
1830 rx_ring->itr_register);
1831 rx_ring->set_itr = 0;
1834 if (napi_schedule_prep(&adapter->napi)) {
1835 adapter->total_rx_bytes = 0;
1836 adapter->total_rx_packets = 0;
1837 __napi_schedule(&adapter->napi);
1843 * e1000_configure_msix - Configure MSI-X hardware
1845 * e1000_configure_msix sets up the hardware to properly
1846 * generate MSI-X interrupts.
1848 static void e1000_configure_msix(struct e1000_adapter *adapter)
1850 struct e1000_hw *hw = &adapter->hw;
1851 struct e1000_ring *rx_ring = adapter->rx_ring;
1852 struct e1000_ring *tx_ring = adapter->tx_ring;
1854 u32 ctrl_ext, ivar = 0;
1856 adapter->eiac_mask = 0;
1858 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1859 if (hw->mac.type == e1000_82574) {
1860 u32 rfctl = er32(RFCTL);
1861 rfctl |= E1000_RFCTL_ACK_DIS;
1865 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1866 /* Configure Rx vector */
1867 rx_ring->ims_val = E1000_IMS_RXQ0;
1868 adapter->eiac_mask |= rx_ring->ims_val;
1869 if (rx_ring->itr_val)
1870 writel(1000000000 / (rx_ring->itr_val * 256),
1871 rx_ring->itr_register);
1873 writel(1, rx_ring->itr_register);
1874 ivar = E1000_IVAR_INT_ALLOC_VALID | vector;
1876 /* Configure Tx vector */
1877 tx_ring->ims_val = E1000_IMS_TXQ0;
1879 if (tx_ring->itr_val)
1880 writel(1000000000 / (tx_ring->itr_val * 256),
1881 tx_ring->itr_register);
1883 writel(1, tx_ring->itr_register);
1884 adapter->eiac_mask |= tx_ring->ims_val;
1885 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8);
1887 /* set vector for Other Causes, e.g. link changes */
1889 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16);
1890 if (rx_ring->itr_val)
1891 writel(1000000000 / (rx_ring->itr_val * 256),
1892 hw->hw_addr + E1000_EITR_82574(vector));
1894 writel(1, hw->hw_addr + E1000_EITR_82574(vector));
1896 /* Cause Tx interrupts on every write back */
1901 /* enable MSI-X PBA support */
1902 ctrl_ext = er32(CTRL_EXT);
1903 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR;
1905 /* Auto-Mask Other interrupts upon ICR read */
1906 #define E1000_EIAC_MASK_82574 0x01F00000
1907 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER);
1908 ctrl_ext |= E1000_CTRL_EXT_EIAME;
1909 ew32(CTRL_EXT, ctrl_ext);
1913 void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter)
1915 if (adapter->msix_entries) {
1916 pci_disable_msix(adapter->pdev);
1917 kfree(adapter->msix_entries);
1918 adapter->msix_entries = NULL;
1919 } else if (adapter->flags & FLAG_MSI_ENABLED) {
1920 pci_disable_msi(adapter->pdev);
1921 adapter->flags &= ~FLAG_MSI_ENABLED;
1926 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1928 * Attempt to configure interrupts using the best available
1929 * capabilities of the hardware and kernel.
1931 void e1000e_set_interrupt_capability(struct e1000_adapter *adapter)
1936 switch (adapter->int_mode) {
1937 case E1000E_INT_MODE_MSIX:
1938 if (adapter->flags & FLAG_HAS_MSIX) {
1939 adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */
1940 adapter->msix_entries = kcalloc(adapter->num_vectors,
1941 sizeof(struct msix_entry),
1943 if (adapter->msix_entries) {
1944 for (i = 0; i < adapter->num_vectors; i++)
1945 adapter->msix_entries[i].entry = i;
1947 err = pci_enable_msix(adapter->pdev,
1948 adapter->msix_entries,
1949 adapter->num_vectors);
1953 /* MSI-X failed, so fall through and try MSI */
1954 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n");
1955 e1000e_reset_interrupt_capability(adapter);
1957 adapter->int_mode = E1000E_INT_MODE_MSI;
1959 case E1000E_INT_MODE_MSI:
1960 if (!pci_enable_msi(adapter->pdev)) {
1961 adapter->flags |= FLAG_MSI_ENABLED;
1963 adapter->int_mode = E1000E_INT_MODE_LEGACY;
1964 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n");
1967 case E1000E_INT_MODE_LEGACY:
1968 /* Don't do anything; this is the system default */
1972 /* store the number of vectors being used */
1973 adapter->num_vectors = 1;
1977 * e1000_request_msix - Initialize MSI-X interrupts
1979 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1982 static int e1000_request_msix(struct e1000_adapter *adapter)
1984 struct net_device *netdev = adapter->netdev;
1985 int err = 0, vector = 0;
1987 if (strlen(netdev->name) < (IFNAMSIZ - 5))
1988 snprintf(adapter->rx_ring->name,
1989 sizeof(adapter->rx_ring->name) - 1,
1990 "%s-rx-0", netdev->name);
1992 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
1993 err = request_irq(adapter->msix_entries[vector].vector,
1994 e1000_intr_msix_rx, 0, adapter->rx_ring->name,
1998 adapter->rx_ring->itr_register = adapter->hw.hw_addr +
1999 E1000_EITR_82574(vector);
2000 adapter->rx_ring->itr_val = adapter->itr;
2003 if (strlen(netdev->name) < (IFNAMSIZ - 5))
2004 snprintf(adapter->tx_ring->name,
2005 sizeof(adapter->tx_ring->name) - 1,
2006 "%s-tx-0", netdev->name);
2008 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
2009 err = request_irq(adapter->msix_entries[vector].vector,
2010 e1000_intr_msix_tx, 0, adapter->tx_ring->name,
2014 adapter->tx_ring->itr_register = adapter->hw.hw_addr +
2015 E1000_EITR_82574(vector);
2016 adapter->tx_ring->itr_val = adapter->itr;
2019 err = request_irq(adapter->msix_entries[vector].vector,
2020 e1000_msix_other, 0, netdev->name, netdev);
2024 e1000_configure_msix(adapter);
2030 * e1000_request_irq - initialize interrupts
2032 * Attempts to configure interrupts using the best available
2033 * capabilities of the hardware and kernel.
2035 static int e1000_request_irq(struct e1000_adapter *adapter)
2037 struct net_device *netdev = adapter->netdev;
2040 if (adapter->msix_entries) {
2041 err = e1000_request_msix(adapter);
2044 /* fall back to MSI */
2045 e1000e_reset_interrupt_capability(adapter);
2046 adapter->int_mode = E1000E_INT_MODE_MSI;
2047 e1000e_set_interrupt_capability(adapter);
2049 if (adapter->flags & FLAG_MSI_ENABLED) {
2050 err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0,
2051 netdev->name, netdev);
2055 /* fall back to legacy interrupt */
2056 e1000e_reset_interrupt_capability(adapter);
2057 adapter->int_mode = E1000E_INT_MODE_LEGACY;
2060 err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED,
2061 netdev->name, netdev);
2063 e_err("Unable to allocate interrupt, Error: %d\n", err);
2068 static void e1000_free_irq(struct e1000_adapter *adapter)
2070 struct net_device *netdev = adapter->netdev;
2072 if (adapter->msix_entries) {
2075 free_irq(adapter->msix_entries[vector].vector, netdev);
2078 free_irq(adapter->msix_entries[vector].vector, netdev);
2081 /* Other Causes interrupt vector */
2082 free_irq(adapter->msix_entries[vector].vector, netdev);
2086 free_irq(adapter->pdev->irq, netdev);
2090 * e1000_irq_disable - Mask off interrupt generation on the NIC
2092 static void e1000_irq_disable(struct e1000_adapter *adapter)
2094 struct e1000_hw *hw = &adapter->hw;
2097 if (adapter->msix_entries)
2098 ew32(EIAC_82574, 0);
2101 if (adapter->msix_entries) {
2103 for (i = 0; i < adapter->num_vectors; i++)
2104 synchronize_irq(adapter->msix_entries[i].vector);
2106 synchronize_irq(adapter->pdev->irq);
2111 * e1000_irq_enable - Enable default interrupt generation settings
2113 static void e1000_irq_enable(struct e1000_adapter *adapter)
2115 struct e1000_hw *hw = &adapter->hw;
2117 if (adapter->msix_entries) {
2118 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574);
2119 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC);
2121 ew32(IMS, IMS_ENABLE_MASK);
2127 * e1000e_get_hw_control - get control of the h/w from f/w
2128 * @adapter: address of board private structure
2130 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2131 * For ASF and Pass Through versions of f/w this means that
2132 * the driver is loaded. For AMT version (only with 82573)
2133 * of the f/w this means that the network i/f is open.
2135 void e1000e_get_hw_control(struct e1000_adapter *adapter)
2137 struct e1000_hw *hw = &adapter->hw;
2141 /* Let firmware know the driver has taken over */
2142 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
2144 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
2145 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
2146 ctrl_ext = er32(CTRL_EXT);
2147 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
2152 * e1000e_release_hw_control - release control of the h/w to f/w
2153 * @adapter: address of board private structure
2155 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2156 * For ASF and Pass Through versions of f/w this means that the
2157 * driver is no longer loaded. For AMT version (only with 82573) i
2158 * of the f/w this means that the network i/f is closed.
2161 void e1000e_release_hw_control(struct e1000_adapter *adapter)
2163 struct e1000_hw *hw = &adapter->hw;
2167 /* Let firmware taken over control of h/w */
2168 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
2170 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
2171 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
2172 ctrl_ext = er32(CTRL_EXT);
2173 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
2178 * e1000_alloc_ring_dma - allocate memory for a ring structure
2180 static int e1000_alloc_ring_dma(struct e1000_adapter *adapter,
2181 struct e1000_ring *ring)
2183 struct pci_dev *pdev = adapter->pdev;
2185 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma,
2194 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
2195 * @tx_ring: Tx descriptor ring
2197 * Return 0 on success, negative on failure
2199 int e1000e_setup_tx_resources(struct e1000_ring *tx_ring)
2201 struct e1000_adapter *adapter = tx_ring->adapter;
2202 int err = -ENOMEM, size;
2204 size = sizeof(struct e1000_buffer) * tx_ring->count;
2205 tx_ring->buffer_info = vzalloc(size);
2206 if (!tx_ring->buffer_info)
2209 /* round up to nearest 4K */
2210 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
2211 tx_ring->size = ALIGN(tx_ring->size, 4096);
2213 err = e1000_alloc_ring_dma(adapter, tx_ring);
2217 tx_ring->next_to_use = 0;
2218 tx_ring->next_to_clean = 0;
2222 vfree(tx_ring->buffer_info);
2223 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2228 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
2229 * @rx_ring: Rx descriptor ring
2231 * Returns 0 on success, negative on failure
2233 int e1000e_setup_rx_resources(struct e1000_ring *rx_ring)
2235 struct e1000_adapter *adapter = rx_ring->adapter;
2236 struct e1000_buffer *buffer_info;
2237 int i, size, desc_len, err = -ENOMEM;
2239 size = sizeof(struct e1000_buffer) * rx_ring->count;
2240 rx_ring->buffer_info = vzalloc(size);
2241 if (!rx_ring->buffer_info)
2244 for (i = 0; i < rx_ring->count; i++) {
2245 buffer_info = &rx_ring->buffer_info[i];
2246 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS,
2247 sizeof(struct e1000_ps_page),
2249 if (!buffer_info->ps_pages)
2253 desc_len = sizeof(union e1000_rx_desc_packet_split);
2255 /* Round up to nearest 4K */
2256 rx_ring->size = rx_ring->count * desc_len;
2257 rx_ring->size = ALIGN(rx_ring->size, 4096);
2259 err = e1000_alloc_ring_dma(adapter, rx_ring);
2263 rx_ring->next_to_clean = 0;
2264 rx_ring->next_to_use = 0;
2265 rx_ring->rx_skb_top = NULL;
2270 for (i = 0; i < rx_ring->count; i++) {
2271 buffer_info = &rx_ring->buffer_info[i];
2272 kfree(buffer_info->ps_pages);
2275 vfree(rx_ring->buffer_info);
2276 e_err("Unable to allocate memory for the receive descriptor ring\n");
2281 * e1000_clean_tx_ring - Free Tx Buffers
2282 * @tx_ring: Tx descriptor ring
2284 static void e1000_clean_tx_ring(struct e1000_ring *tx_ring)
2286 struct e1000_adapter *adapter = tx_ring->adapter;
2287 struct e1000_buffer *buffer_info;
2291 for (i = 0; i < tx_ring->count; i++) {
2292 buffer_info = &tx_ring->buffer_info[i];
2293 e1000_put_txbuf(tx_ring, buffer_info);
2296 netdev_reset_queue(adapter->netdev);
2297 size = sizeof(struct e1000_buffer) * tx_ring->count;
2298 memset(tx_ring->buffer_info, 0, size);
2300 memset(tx_ring->desc, 0, tx_ring->size);
2302 tx_ring->next_to_use = 0;
2303 tx_ring->next_to_clean = 0;
2305 writel(0, tx_ring->head);
2306 if (tx_ring->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
2307 e1000e_update_tdt_wa(tx_ring, 0);
2309 writel(0, tx_ring->tail);
2313 * e1000e_free_tx_resources - Free Tx Resources per Queue
2314 * @tx_ring: Tx descriptor ring
2316 * Free all transmit software resources
2318 void e1000e_free_tx_resources(struct e1000_ring *tx_ring)
2320 struct e1000_adapter *adapter = tx_ring->adapter;
2321 struct pci_dev *pdev = adapter->pdev;
2323 e1000_clean_tx_ring(tx_ring);
2325 vfree(tx_ring->buffer_info);
2326 tx_ring->buffer_info = NULL;
2328 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
2330 tx_ring->desc = NULL;
2334 * e1000e_free_rx_resources - Free Rx Resources
2335 * @rx_ring: Rx descriptor ring
2337 * Free all receive software resources
2339 void e1000e_free_rx_resources(struct e1000_ring *rx_ring)
2341 struct e1000_adapter *adapter = rx_ring->adapter;
2342 struct pci_dev *pdev = adapter->pdev;
2345 e1000_clean_rx_ring(rx_ring);
2347 for (i = 0; i < rx_ring->count; i++)
2348 kfree(rx_ring->buffer_info[i].ps_pages);
2350 vfree(rx_ring->buffer_info);
2351 rx_ring->buffer_info = NULL;
2353 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
2355 rx_ring->desc = NULL;
2359 * e1000_update_itr - update the dynamic ITR value based on statistics
2360 * @adapter: pointer to adapter
2361 * @itr_setting: current adapter->itr
2362 * @packets: the number of packets during this measurement interval
2363 * @bytes: the number of bytes during this measurement interval
2365 * Stores a new ITR value based on packets and byte
2366 * counts during the last interrupt. The advantage of per interrupt
2367 * computation is faster updates and more accurate ITR for the current
2368 * traffic pattern. Constants in this function were computed
2369 * based on theoretical maximum wire speed and thresholds were set based
2370 * on testing data as well as attempting to minimize response time
2371 * while increasing bulk throughput. This functionality is controlled
2372 * by the InterruptThrottleRate module parameter.
2374 static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
2375 u16 itr_setting, int packets,
2378 unsigned int retval = itr_setting;
2383 switch (itr_setting) {
2384 case lowest_latency:
2385 /* handle TSO and jumbo frames */
2386 if (bytes/packets > 8000)
2387 retval = bulk_latency;
2388 else if ((packets < 5) && (bytes > 512))
2389 retval = low_latency;
2391 case low_latency: /* 50 usec aka 20000 ints/s */
2392 if (bytes > 10000) {
2393 /* this if handles the TSO accounting */
2394 if (bytes/packets > 8000)
2395 retval = bulk_latency;
2396 else if ((packets < 10) || ((bytes/packets) > 1200))
2397 retval = bulk_latency;
2398 else if ((packets > 35))
2399 retval = lowest_latency;
2400 } else if (bytes/packets > 2000) {
2401 retval = bulk_latency;
2402 } else if (packets <= 2 && bytes < 512) {
2403 retval = lowest_latency;
2406 case bulk_latency: /* 250 usec aka 4000 ints/s */
2407 if (bytes > 25000) {
2409 retval = low_latency;
2410 } else if (bytes < 6000) {
2411 retval = low_latency;
2419 static void e1000_set_itr(struct e1000_adapter *adapter)
2421 struct e1000_hw *hw = &adapter->hw;
2423 u32 new_itr = adapter->itr;
2425 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2426 if (adapter->link_speed != SPEED_1000) {
2432 if (adapter->flags2 & FLAG2_DISABLE_AIM) {
2437 adapter->tx_itr = e1000_update_itr(adapter,
2439 adapter->total_tx_packets,
2440 adapter->total_tx_bytes);
2441 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2442 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
2443 adapter->tx_itr = low_latency;
2445 adapter->rx_itr = e1000_update_itr(adapter,
2447 adapter->total_rx_packets,
2448 adapter->total_rx_bytes);
2449 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2450 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
2451 adapter->rx_itr = low_latency;
2453 current_itr = max(adapter->rx_itr, adapter->tx_itr);
2455 switch (current_itr) {
2456 /* counts and packets in update_itr are dependent on these numbers */
2457 case lowest_latency:
2461 new_itr = 20000; /* aka hwitr = ~200 */
2471 if (new_itr != adapter->itr) {
2473 * this attempts to bias the interrupt rate towards Bulk
2474 * by adding intermediate steps when interrupt rate is
2477 new_itr = new_itr > adapter->itr ?
2478 min(adapter->itr + (new_itr >> 2), new_itr) :
2480 adapter->itr = new_itr;
2481 adapter->rx_ring->itr_val = new_itr;
2482 if (adapter->msix_entries)
2483 adapter->rx_ring->set_itr = 1;
2486 ew32(ITR, 1000000000 / (new_itr * 256));
2493 * e1000e_write_itr - write the ITR value to the appropriate registers
2494 * @adapter: address of board private structure
2495 * @itr: new ITR value to program
2497 * e1000e_write_itr determines if the adapter is in MSI-X mode
2498 * and, if so, writes the EITR registers with the ITR value.
2499 * Otherwise, it writes the ITR value into the ITR register.
2501 void e1000e_write_itr(struct e1000_adapter *adapter, u32 itr)
2503 struct e1000_hw *hw = &adapter->hw;
2504 u32 new_itr = itr ? 1000000000 / (itr * 256) : 0;
2506 if (adapter->msix_entries) {
2509 for (vector = 0; vector < adapter->num_vectors; vector++)
2510 writel(new_itr, hw->hw_addr + E1000_EITR_82574(vector));
2517 * e1000_alloc_queues - Allocate memory for all rings
2518 * @adapter: board private structure to initialize
2520 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter)
2522 int size = sizeof(struct e1000_ring);
2524 adapter->tx_ring = kzalloc(size, GFP_KERNEL);
2525 if (!adapter->tx_ring)
2527 adapter->tx_ring->count = adapter->tx_ring_count;
2528 adapter->tx_ring->adapter = adapter;
2530 adapter->rx_ring = kzalloc(size, GFP_KERNEL);
2531 if (!adapter->rx_ring)
2533 adapter->rx_ring->count = adapter->rx_ring_count;
2534 adapter->rx_ring->adapter = adapter;
2538 e_err("Unable to allocate memory for queues\n");
2539 kfree(adapter->rx_ring);
2540 kfree(adapter->tx_ring);
2545 * e1000e_poll - NAPI Rx polling callback
2546 * @napi: struct associated with this polling callback
2547 * @weight: number of packets driver is allowed to process this poll
2549 static int e1000e_poll(struct napi_struct *napi, int weight)
2551 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter,
2553 struct e1000_hw *hw = &adapter->hw;
2554 struct net_device *poll_dev = adapter->netdev;
2555 int tx_cleaned = 1, work_done = 0;
2557 adapter = netdev_priv(poll_dev);
2559 if (!adapter->msix_entries ||
2560 (adapter->rx_ring->ims_val & adapter->tx_ring->ims_val))
2561 tx_cleaned = e1000_clean_tx_irq(adapter->tx_ring);
2563 adapter->clean_rx(adapter->rx_ring, &work_done, weight);
2568 /* If weight not fully consumed, exit the polling mode */
2569 if (work_done < weight) {
2570 if (adapter->itr_setting & 3)
2571 e1000_set_itr(adapter);
2572 napi_complete(napi);
2573 if (!test_bit(__E1000_DOWN, &adapter->state)) {
2574 if (adapter->msix_entries)
2575 ew32(IMS, adapter->rx_ring->ims_val);
2577 e1000_irq_enable(adapter);
2584 static int e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
2586 struct e1000_adapter *adapter = netdev_priv(netdev);
2587 struct e1000_hw *hw = &adapter->hw;
2590 /* don't update vlan cookie if already programmed */
2591 if ((adapter->hw.mng_cookie.status &
2592 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2593 (vid == adapter->mng_vlan_id))
2596 /* add VID to filter table */
2597 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2598 index = (vid >> 5) & 0x7F;
2599 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2600 vfta |= (1 << (vid & 0x1F));
2601 hw->mac.ops.write_vfta(hw, index, vfta);
2604 set_bit(vid, adapter->active_vlans);
2609 static int e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
2611 struct e1000_adapter *adapter = netdev_priv(netdev);
2612 struct e1000_hw *hw = &adapter->hw;
2615 if ((adapter->hw.mng_cookie.status &
2616 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2617 (vid == adapter->mng_vlan_id)) {
2618 /* release control to f/w */
2619 e1000e_release_hw_control(adapter);
2623 /* remove VID from filter table */
2624 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2625 index = (vid >> 5) & 0x7F;
2626 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2627 vfta &= ~(1 << (vid & 0x1F));
2628 hw->mac.ops.write_vfta(hw, index, vfta);
2631 clear_bit(vid, adapter->active_vlans);
2637 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
2638 * @adapter: board private structure to initialize
2640 static void e1000e_vlan_filter_disable(struct e1000_adapter *adapter)
2642 struct net_device *netdev = adapter->netdev;
2643 struct e1000_hw *hw = &adapter->hw;
2646 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2647 /* disable VLAN receive filtering */
2649 rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN);
2652 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) {
2653 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
2654 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2660 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
2661 * @adapter: board private structure to initialize
2663 static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter)
2665 struct e1000_hw *hw = &adapter->hw;
2668 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2669 /* enable VLAN receive filtering */
2671 rctl |= E1000_RCTL_VFE;
2672 rctl &= ~E1000_RCTL_CFIEN;
2678 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping
2679 * @adapter: board private structure to initialize
2681 static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter)
2683 struct e1000_hw *hw = &adapter->hw;
2686 /* disable VLAN tag insert/strip */
2688 ctrl &= ~E1000_CTRL_VME;
2693 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
2694 * @adapter: board private structure to initialize
2696 static void e1000e_vlan_strip_enable(struct e1000_adapter *adapter)
2698 struct e1000_hw *hw = &adapter->hw;
2701 /* enable VLAN tag insert/strip */
2703 ctrl |= E1000_CTRL_VME;
2707 static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
2709 struct net_device *netdev = adapter->netdev;
2710 u16 vid = adapter->hw.mng_cookie.vlan_id;
2711 u16 old_vid = adapter->mng_vlan_id;
2713 if (adapter->hw.mng_cookie.status &
2714 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
2715 e1000_vlan_rx_add_vid(netdev, vid);
2716 adapter->mng_vlan_id = vid;
2719 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && (vid != old_vid))
2720 e1000_vlan_rx_kill_vid(netdev, old_vid);
2723 static void e1000_restore_vlan(struct e1000_adapter *adapter)
2727 e1000_vlan_rx_add_vid(adapter->netdev, 0);
2729 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
2730 e1000_vlan_rx_add_vid(adapter->netdev, vid);
2733 static void e1000_init_manageability_pt(struct e1000_adapter *adapter)
2735 struct e1000_hw *hw = &adapter->hw;
2736 u32 manc, manc2h, mdef, i, j;
2738 if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
2744 * enable receiving management packets to the host. this will probably
2745 * generate destination unreachable messages from the host OS, but
2746 * the packets will be handled on SMBUS
2748 manc |= E1000_MANC_EN_MNG2HOST;
2749 manc2h = er32(MANC2H);
2751 switch (hw->mac.type) {
2753 manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664);
2758 * Check if IPMI pass-through decision filter already exists;
2761 for (i = 0, j = 0; i < 8; i++) {
2762 mdef = er32(MDEF(i));
2764 /* Ignore filters with anything other than IPMI ports */
2765 if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
2768 /* Enable this decision filter in MANC2H */
2775 if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
2778 /* Create new decision filter in an empty filter */
2779 for (i = 0, j = 0; i < 8; i++)
2780 if (er32(MDEF(i)) == 0) {
2781 ew32(MDEF(i), (E1000_MDEF_PORT_623 |
2782 E1000_MDEF_PORT_664));
2789 e_warn("Unable to create IPMI pass-through filter\n");
2793 ew32(MANC2H, manc2h);
2798 * e1000_configure_tx - Configure Transmit Unit after Reset
2799 * @adapter: board private structure
2801 * Configure the Tx unit of the MAC after a reset.
2803 static void e1000_configure_tx(struct e1000_adapter *adapter)
2805 struct e1000_hw *hw = &adapter->hw;
2806 struct e1000_ring *tx_ring = adapter->tx_ring;
2810 /* Setup the HW Tx Head and Tail descriptor pointers */
2811 tdba = tx_ring->dma;
2812 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc);
2813 ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32)));
2814 ew32(TDBAH(0), (tdba >> 32));
2815 ew32(TDLEN(0), tdlen);
2818 tx_ring->head = adapter->hw.hw_addr + E1000_TDH(0);
2819 tx_ring->tail = adapter->hw.hw_addr + E1000_TDT(0);
2821 /* Set the Tx Interrupt Delay register */
2822 ew32(TIDV, adapter->tx_int_delay);
2823 /* Tx irq moderation */
2824 ew32(TADV, adapter->tx_abs_int_delay);
2826 if (adapter->flags2 & FLAG2_DMA_BURST) {
2827 u32 txdctl = er32(TXDCTL(0));
2828 txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH |
2829 E1000_TXDCTL_WTHRESH);
2831 * set up some performance related parameters to encourage the
2832 * hardware to use the bus more efficiently in bursts, depends
2833 * on the tx_int_delay to be enabled,
2834 * wthresh = 5 ==> burst write a cacheline (64 bytes) at a time
2835 * hthresh = 1 ==> prefetch when one or more available
2836 * pthresh = 0x1f ==> prefetch if internal cache 31 or less
2837 * BEWARE: this seems to work but should be considered first if
2838 * there are Tx hangs or other Tx related bugs
2840 txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE;
2841 ew32(TXDCTL(0), txdctl);
2843 /* erratum work around: set txdctl the same for both queues */
2844 ew32(TXDCTL(1), er32(TXDCTL(0)));
2846 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) {
2847 tarc = er32(TARC(0));
2849 * set the speed mode bit, we'll clear it if we're not at
2850 * gigabit link later
2852 #define SPEED_MODE_BIT (1 << 21)
2853 tarc |= SPEED_MODE_BIT;
2854 ew32(TARC(0), tarc);
2857 /* errata: program both queues to unweighted RR */
2858 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) {
2859 tarc = er32(TARC(0));
2861 ew32(TARC(0), tarc);
2862 tarc = er32(TARC(1));
2864 ew32(TARC(1), tarc);
2867 /* Setup Transmit Descriptor Settings for eop descriptor */
2868 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
2870 /* only set IDE if we are delaying interrupts using the timers */
2871 if (adapter->tx_int_delay)
2872 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
2874 /* enable Report Status bit */
2875 adapter->txd_cmd |= E1000_TXD_CMD_RS;
2877 hw->mac.ops.config_collision_dist(hw);
2881 * e1000_setup_rctl - configure the receive control registers
2882 * @adapter: Board private structure
2884 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2885 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2886 static void e1000_setup_rctl(struct e1000_adapter *adapter)
2888 struct e1000_hw *hw = &adapter->hw;
2892 /* Workaround Si errata on PCHx - configure jumbo frame flow */
2893 if (hw->mac.type >= e1000_pch2lan) {
2896 if (adapter->netdev->mtu > ETH_DATA_LEN)
2897 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true);
2899 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false);
2902 e_dbg("failed to enable jumbo frame workaround mode\n");
2905 /* Program MC offset vector base */
2907 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2908 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
2909 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
2910 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
2912 /* Do not Store bad packets */
2913 rctl &= ~E1000_RCTL_SBP;
2915 /* Enable Long Packet receive */
2916 if (adapter->netdev->mtu <= ETH_DATA_LEN)
2917 rctl &= ~E1000_RCTL_LPE;
2919 rctl |= E1000_RCTL_LPE;
2921 /* Some systems expect that the CRC is included in SMBUS traffic. The
2922 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2923 * host memory when this is enabled
2925 if (adapter->flags2 & FLAG2_CRC_STRIPPING)
2926 rctl |= E1000_RCTL_SECRC;
2928 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
2929 if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) {
2932 e1e_rphy(hw, PHY_REG(770, 26), &phy_data);
2934 phy_data |= (1 << 2);
2935 e1e_wphy(hw, PHY_REG(770, 26), phy_data);
2937 e1e_rphy(hw, 22, &phy_data);
2939 phy_data |= (1 << 14);
2940 e1e_wphy(hw, 0x10, 0x2823);
2941 e1e_wphy(hw, 0x11, 0x0003);
2942 e1e_wphy(hw, 22, phy_data);
2945 /* Setup buffer sizes */
2946 rctl &= ~E1000_RCTL_SZ_4096;
2947 rctl |= E1000_RCTL_BSEX;
2948 switch (adapter->rx_buffer_len) {
2951 rctl |= E1000_RCTL_SZ_2048;
2952 rctl &= ~E1000_RCTL_BSEX;
2955 rctl |= E1000_RCTL_SZ_4096;
2958 rctl |= E1000_RCTL_SZ_8192;
2961 rctl |= E1000_RCTL_SZ_16384;
2965 /* Enable Extended Status in all Receive Descriptors */
2966 rfctl = er32(RFCTL);
2967 rfctl |= E1000_RFCTL_EXTEN;
2971 * 82571 and greater support packet-split where the protocol
2972 * header is placed in skb->data and the packet data is
2973 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2974 * In the case of a non-split, skb->data is linearly filled,
2975 * followed by the page buffers. Therefore, skb->data is
2976 * sized to hold the largest protocol header.
2978 * allocations using alloc_page take too long for regular MTU
2979 * so only enable packet split for jumbo frames
2981 * Using pages when the page size is greater than 16k wastes
2982 * a lot of memory, since we allocate 3 pages at all times
2985 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
2986 if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE))
2987 adapter->rx_ps_pages = pages;
2989 adapter->rx_ps_pages = 0;
2991 if (adapter->rx_ps_pages) {
2994 /* Enable Packet split descriptors */
2995 rctl |= E1000_RCTL_DTYP_PS;
2997 psrctl |= adapter->rx_ps_bsize0 >>
2998 E1000_PSRCTL_BSIZE0_SHIFT;
3000 switch (adapter->rx_ps_pages) {
3002 psrctl |= PAGE_SIZE <<
3003 E1000_PSRCTL_BSIZE3_SHIFT;
3005 psrctl |= PAGE_SIZE <<
3006 E1000_PSRCTL_BSIZE2_SHIFT;
3008 psrctl |= PAGE_SIZE >>
3009 E1000_PSRCTL_BSIZE1_SHIFT;
3013 ew32(PSRCTL, psrctl);
3016 /* This is useful for sniffing bad packets. */
3017 if (adapter->netdev->features & NETIF_F_RXALL) {
3018 /* UPE and MPE will be handled by normal PROMISC logic
3019 * in e1000e_set_rx_mode */
3020 rctl |= (E1000_RCTL_SBP | /* Receive bad packets */
3021 E1000_RCTL_BAM | /* RX All Bcast Pkts */
3022 E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */
3024 rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */
3025 E1000_RCTL_DPF | /* Allow filtered pause */
3026 E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */
3027 /* Do not mess with E1000_CTRL_VME, it affects transmit as well,
3028 * and that breaks VLANs.
3033 /* just started the receive unit, no need to restart */
3034 adapter->flags &= ~FLAG_RX_RESTART_NOW;
3038 * e1000_configure_rx - Configure Receive Unit after Reset
3039 * @adapter: board private structure
3041 * Configure the Rx unit of the MAC after a reset.
3043 static void e1000_configure_rx(struct e1000_adapter *adapter)
3045 struct e1000_hw *hw = &adapter->hw;
3046 struct e1000_ring *rx_ring = adapter->rx_ring;
3048 u32 rdlen, rctl, rxcsum, ctrl_ext;
3050 if (adapter->rx_ps_pages) {
3051 /* this is a 32 byte descriptor */
3052 rdlen = rx_ring->count *
3053 sizeof(union e1000_rx_desc_packet_split);
3054 adapter->clean_rx = e1000_clean_rx_irq_ps;
3055 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
3056 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) {
3057 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended);
3058 adapter->clean_rx = e1000_clean_jumbo_rx_irq;
3059 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
3061 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended);
3062 adapter->clean_rx = e1000_clean_rx_irq;
3063 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
3066 /* disable receives while setting up the descriptors */
3068 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
3069 ew32(RCTL, rctl & ~E1000_RCTL_EN);
3071 usleep_range(10000, 20000);
3073 if (adapter->flags2 & FLAG2_DMA_BURST) {
3075 * set the writeback threshold (only takes effect if the RDTR
3076 * is set). set GRAN=1 and write back up to 0x4 worth, and
3077 * enable prefetching of 0x20 Rx descriptors
3083 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE);
3084 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE);
3087 * override the delay timers for enabling bursting, only if
3088 * the value was not set by the user via module options
3090 if (adapter->rx_int_delay == DEFAULT_RDTR)
3091 adapter->rx_int_delay = BURST_RDTR;
3092 if (adapter->rx_abs_int_delay == DEFAULT_RADV)
3093 adapter->rx_abs_int_delay = BURST_RADV;
3096 /* set the Receive Delay Timer Register */
3097 ew32(RDTR, adapter->rx_int_delay);
3099 /* irq moderation */
3100 ew32(RADV, adapter->rx_abs_int_delay);
3101 if ((adapter->itr_setting != 0) && (adapter->itr != 0))
3102 e1000e_write_itr(adapter, adapter->itr);
3104 ctrl_ext = er32(CTRL_EXT);
3105 /* Auto-Mask interrupts upon ICR access */
3106 ctrl_ext |= E1000_CTRL_EXT_IAME;
3107 ew32(IAM, 0xffffffff);
3108 ew32(CTRL_EXT, ctrl_ext);
3112 * Setup the HW Rx Head and Tail Descriptor Pointers and
3113 * the Base and Length of the Rx Descriptor Ring
3115 rdba = rx_ring->dma;
3116 ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32)));
3117 ew32(RDBAH(0), (rdba >> 32));
3118 ew32(RDLEN(0), rdlen);
3121 rx_ring->head = adapter->hw.hw_addr + E1000_RDH(0);
3122 rx_ring->tail = adapter->hw.hw_addr + E1000_RDT(0);
3124 /* Enable Receive Checksum Offload for TCP and UDP */
3125 rxcsum = er32(RXCSUM);
3126 if (adapter->netdev->features & NETIF_F_RXCSUM)
3127 rxcsum |= E1000_RXCSUM_TUOFL;
3129 rxcsum &= ~E1000_RXCSUM_TUOFL;
3130 ew32(RXCSUM, rxcsum);
3132 if (adapter->hw.mac.type == e1000_pch2lan) {
3134 * With jumbo frames, excessive C-state transition
3135 * latencies result in dropped transactions.
3137 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3138 u32 rxdctl = er32(RXDCTL(0));
3139 ew32(RXDCTL(0), rxdctl | 0x3);
3140 pm_qos_update_request(&adapter->netdev->pm_qos_req, 55);
3142 pm_qos_update_request(&adapter->netdev->pm_qos_req,
3143 PM_QOS_DEFAULT_VALUE);
3147 /* Enable Receives */
3152 * e1000e_write_mc_addr_list - write multicast addresses to MTA
3153 * @netdev: network interface device structure
3155 * Writes multicast address list to the MTA hash table.
3156 * Returns: -ENOMEM on failure
3157 * 0 on no addresses written
3158 * X on writing X addresses to MTA
3160 static int e1000e_write_mc_addr_list(struct net_device *netdev)
3162 struct e1000_adapter *adapter = netdev_priv(netdev);
3163 struct e1000_hw *hw = &adapter->hw;
3164 struct netdev_hw_addr *ha;
3168 if (netdev_mc_empty(netdev)) {
3169 /* nothing to program, so clear mc list */
3170 hw->mac.ops.update_mc_addr_list(hw, NULL, 0);
3174 mta_list = kzalloc(netdev_mc_count(netdev) * ETH_ALEN, GFP_ATOMIC);
3178 /* update_mc_addr_list expects a packed array of only addresses. */
3180 netdev_for_each_mc_addr(ha, netdev)
3181 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN);
3183 hw->mac.ops.update_mc_addr_list(hw, mta_list, i);
3186 return netdev_mc_count(netdev);
3190 * e1000e_write_uc_addr_list - write unicast addresses to RAR table
3191 * @netdev: network interface device structure
3193 * Writes unicast address list to the RAR table.
3194 * Returns: -ENOMEM on failure/insufficient address space
3195 * 0 on no addresses written
3196 * X on writing X addresses to the RAR table
3198 static int e1000e_write_uc_addr_list(struct net_device *netdev)
3200 struct e1000_adapter *adapter = netdev_priv(netdev);
3201 struct e1000_hw *hw = &adapter->hw;
3202 unsigned int rar_entries = hw->mac.rar_entry_count;
3205 /* save a rar entry for our hardware address */
3208 /* save a rar entry for the LAA workaround */
3209 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA)
3212 /* return ENOMEM indicating insufficient memory for addresses */
3213 if (netdev_uc_count(netdev) > rar_entries)
3216 if (!netdev_uc_empty(netdev) && rar_entries) {
3217 struct netdev_hw_addr *ha;
3220 * write the addresses in reverse order to avoid write
3223 netdev_for_each_uc_addr(ha, netdev) {
3226 hw->mac.ops.rar_set(hw, ha->addr, rar_entries--);
3231 /* zero out the remaining RAR entries not used above */
3232 for (; rar_entries > 0; rar_entries--) {
3233 ew32(RAH(rar_entries), 0);
3234 ew32(RAL(rar_entries), 0);
3242 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set
3243 * @netdev: network interface device structure
3245 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast
3246 * address list or the network interface flags are updated. This routine is
3247 * responsible for configuring the hardware for proper unicast, multicast,
3248 * promiscuous mode, and all-multi behavior.
3250 static void e1000e_set_rx_mode(struct net_device *netdev)
3252 struct e1000_adapter *adapter = netdev_priv(netdev);
3253 struct e1000_hw *hw = &adapter->hw;
3256 /* Check for Promiscuous and All Multicast modes */
3259 /* clear the affected bits */
3260 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
3262 if (netdev->flags & IFF_PROMISC) {
3263 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
3264 /* Do not hardware filter VLANs in promisc mode */
3265 e1000e_vlan_filter_disable(adapter);
3269 if (netdev->flags & IFF_ALLMULTI) {
3270 rctl |= E1000_RCTL_MPE;
3273 * Write addresses to the MTA, if the attempt fails
3274 * then we should just turn on promiscuous mode so
3275 * that we can at least receive multicast traffic
3277 count = e1000e_write_mc_addr_list(netdev);
3279 rctl |= E1000_RCTL_MPE;
3281 e1000e_vlan_filter_enable(adapter);
3283 * Write addresses to available RAR registers, if there is not
3284 * sufficient space to store all the addresses then enable
3285 * unicast promiscuous mode
3287 count = e1000e_write_uc_addr_list(netdev);
3289 rctl |= E1000_RCTL_UPE;
3294 if (netdev->features & NETIF_F_HW_VLAN_RX)
3295 e1000e_vlan_strip_enable(adapter);
3297 e1000e_vlan_strip_disable(adapter);
3300 static void e1000e_setup_rss_hash(struct e1000_adapter *adapter)
3302 struct e1000_hw *hw = &adapter->hw;
3305 static const u32 rsskey[10] = {
3306 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0,
3307 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe
3310 /* Fill out hash function seed */
3311 for (i = 0; i < 10; i++)
3312 ew32(RSSRK(i), rsskey[i]);
3314 /* Direct all traffic to queue 0 */
3315 for (i = 0; i < 32; i++)
3319 * Disable raw packet checksumming so that RSS hash is placed in
3320 * descriptor on writeback.
3322 rxcsum = er32(RXCSUM);
3323 rxcsum |= E1000_RXCSUM_PCSD;
3325 ew32(RXCSUM, rxcsum);
3327 mrqc = (E1000_MRQC_RSS_FIELD_IPV4 |
3328 E1000_MRQC_RSS_FIELD_IPV4_TCP |
3329 E1000_MRQC_RSS_FIELD_IPV6 |
3330 E1000_MRQC_RSS_FIELD_IPV6_TCP |
3331 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX);
3337 * e1000_configure - configure the hardware for Rx and Tx
3338 * @adapter: private board structure
3340 static void e1000_configure(struct e1000_adapter *adapter)
3342 struct e1000_ring *rx_ring = adapter->rx_ring;
3344 e1000e_set_rx_mode(adapter->netdev);
3346 e1000_restore_vlan(adapter);
3347 e1000_init_manageability_pt(adapter);
3349 e1000_configure_tx(adapter);
3351 if (adapter->netdev->features & NETIF_F_RXHASH)
3352 e1000e_setup_rss_hash(adapter);
3353 e1000_setup_rctl(adapter);
3354 e1000_configure_rx(adapter);
3355 adapter->alloc_rx_buf(rx_ring, e1000_desc_unused(rx_ring), GFP_KERNEL);
3359 * e1000e_power_up_phy - restore link in case the phy was powered down
3360 * @adapter: address of board private structure
3362 * The phy may be powered down to save power and turn off link when the
3363 * driver is unloaded and wake on lan is not enabled (among others)
3364 * *** this routine MUST be followed by a call to e1000e_reset ***
3366 void e1000e_power_up_phy(struct e1000_adapter *adapter)
3368 if (adapter->hw.phy.ops.power_up)
3369 adapter->hw.phy.ops.power_up(&adapter->hw);
3371 adapter->hw.mac.ops.setup_link(&adapter->hw);
3375 * e1000_power_down_phy - Power down the PHY
3377 * Power down the PHY so no link is implied when interface is down.
3378 * The PHY cannot be powered down if management or WoL is active.
3380 static void e1000_power_down_phy(struct e1000_adapter *adapter)
3382 /* WoL is enabled */
3386 if (adapter->hw.phy.ops.power_down)
3387 adapter->hw.phy.ops.power_down(&adapter->hw);
3391 * e1000e_reset - bring the hardware into a known good state
3393 * This function boots the hardware and enables some settings that
3394 * require a configuration cycle of the hardware - those cannot be
3395 * set/changed during runtime. After reset the device needs to be
3396 * properly configured for Rx, Tx etc.
3398 void e1000e_reset(struct e1000_adapter *adapter)
3400 struct e1000_mac_info *mac = &adapter->hw.mac;
3401 struct e1000_fc_info *fc = &adapter->hw.fc;
3402 struct e1000_hw *hw = &adapter->hw;
3403 u32 tx_space, min_tx_space, min_rx_space;
3404 u32 pba = adapter->pba;
3407 /* reset Packet Buffer Allocation to default */
3410 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
3412 * To maintain wire speed transmits, the Tx FIFO should be
3413 * large enough to accommodate two full transmit packets,
3414 * rounded up to the next 1KB and expressed in KB. Likewise,
3415 * the Rx FIFO should be large enough to accommodate at least
3416 * one full receive packet and is similarly rounded up and
3420 /* upper 16 bits has Tx packet buffer allocation size in KB */
3421 tx_space = pba >> 16;
3422 /* lower 16 bits has Rx packet buffer allocation size in KB */
3425 * the Tx fifo also stores 16 bytes of information about the Tx
3426 * but don't include ethernet FCS because hardware appends it
3428 min_tx_space = (adapter->max_frame_size +
3429 sizeof(struct e1000_tx_desc) -
3431 min_tx_space = ALIGN(min_tx_space, 1024);
3432 min_tx_space >>= 10;
3433 /* software strips receive CRC, so leave room for it */
3434 min_rx_space = adapter->max_frame_size;
3435 min_rx_space = ALIGN(min_rx_space, 1024);
3436 min_rx_space >>= 10;
3439 * If current Tx allocation is less than the min Tx FIFO size,
3440 * and the min Tx FIFO size is less than the current Rx FIFO
3441 * allocation, take space away from current Rx allocation
3443 if ((tx_space < min_tx_space) &&
3444 ((min_tx_space - tx_space) < pba)) {
3445 pba -= min_tx_space - tx_space;
3448 * if short on Rx space, Rx wins and must trump Tx
3449 * adjustment or use Early Receive if available
3451 if (pba < min_rx_space)
3459 * flow control settings
3461 * The high water mark must be low enough to fit one full frame
3462 * (or the size used for early receive) above it in the Rx FIFO.
3463 * Set it to the lower of:
3464 * - 90% of the Rx FIFO size, and
3465 * - the full Rx FIFO size minus one full frame
3467 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME)
3468 fc->pause_time = 0xFFFF;
3470 fc->pause_time = E1000_FC_PAUSE_TIME;
3471 fc->send_xon = true;
3472 fc->current_mode = fc->requested_mode;
3474 switch (hw->mac.type) {
3476 case e1000_ich10lan:
3477 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3480 fc->high_water = 0x2800;
3481 fc->low_water = fc->high_water - 8;
3486 hwm = min(((pba << 10) * 9 / 10),
3487 ((pba << 10) - adapter->max_frame_size));
3489 fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */
3490 fc->low_water = fc->high_water - 8;
3494 * Workaround PCH LOM adapter hangs with certain network
3495 * loads. If hangs persist, try disabling Tx flow control.
3497 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3498 fc->high_water = 0x3500;
3499 fc->low_water = 0x1500;
3501 fc->high_water = 0x5000;
3502 fc->low_water = 0x3000;
3504 fc->refresh_time = 0x1000;
3508 fc->high_water = 0x05C20;
3509 fc->low_water = 0x05048;
3510 fc->pause_time = 0x0650;
3511 fc->refresh_time = 0x0400;
3512 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3520 * Disable Adaptive Interrupt Moderation if 2 full packets cannot
3521 * fit in receive buffer.
3523 if (adapter->itr_setting & 0x3) {
3524 if ((adapter->max_frame_size * 2) > (pba << 10)) {
3525 if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) {
3526 dev_info(&adapter->pdev->dev,
3527 "Interrupt Throttle Rate turned off\n");
3528 adapter->flags2 |= FLAG2_DISABLE_AIM;
3529 e1000e_write_itr(adapter, 0);
3531 } else if (adapter->flags2 & FLAG2_DISABLE_AIM) {
3532 dev_info(&adapter->pdev->dev,
3533 "Interrupt Throttle Rate turned on\n");
3534 adapter->flags2 &= ~FLAG2_DISABLE_AIM;
3535 adapter->itr = 20000;
3536 e1000e_write_itr(adapter, adapter->itr);
3540 /* Allow time for pending master requests to run */
3541 mac->ops.reset_hw(hw);
3544 * For parts with AMT enabled, let the firmware know
3545 * that the network interface is in control
3547 if (adapter->flags & FLAG_HAS_AMT)
3548 e1000e_get_hw_control(adapter);
3552 if (mac->ops.init_hw(hw))
3553 e_err("Hardware Error\n");
3555 e1000_update_mng_vlan(adapter);
3557 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3558 ew32(VET, ETH_P_8021Q);
3560 e1000e_reset_adaptive(hw);
3562 if (!netif_running(adapter->netdev) &&
3563 !test_bit(__E1000_TESTING, &adapter->state)) {
3564 e1000_power_down_phy(adapter);
3568 e1000_get_phy_info(hw);
3570 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) &&
3571 !(adapter->flags & FLAG_SMART_POWER_DOWN)) {
3574 * speed up time to link by disabling smart power down, ignore
3575 * the return value of this function because there is nothing
3576 * different we would do if it failed
3578 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
3579 phy_data &= ~IGP02E1000_PM_SPD;
3580 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
3584 int e1000e_up(struct e1000_adapter *adapter)
3586 struct e1000_hw *hw = &adapter->hw;
3588 /* hardware has been reset, we need to reload some things */
3589 e1000_configure(adapter);
3591 clear_bit(__E1000_DOWN, &adapter->state);
3593 if (adapter->msix_entries)
3594 e1000_configure_msix(adapter);
3595 e1000_irq_enable(adapter);
3597 netif_start_queue(adapter->netdev);
3599 /* fire a link change interrupt to start the watchdog */
3600 if (adapter->msix_entries)
3601 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
3603 ew32(ICS, E1000_ICS_LSC);
3608 static void e1000e_flush_descriptors(struct e1000_adapter *adapter)
3610 struct e1000_hw *hw = &adapter->hw;
3612 if (!(adapter->flags2 & FLAG2_DMA_BURST))
3615 /* flush pending descriptor writebacks to memory */
3616 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
3617 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
3619 /* execute the writes immediately */
3623 * due to rare timing issues, write to TIDV/RDTR again to ensure the
3624 * write is successful
3626 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
3627 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
3629 /* execute the writes immediately */
3633 static void e1000e_update_stats(struct e1000_adapter *adapter);
3635 void e1000e_down(struct e1000_adapter *adapter)
3637 struct net_device *netdev = adapter->netdev;
3638 struct e1000_hw *hw = &adapter->hw;
3642 * signal that we're down so the interrupt handler does not
3643 * reschedule our watchdog timer
3645 set_bit(__E1000_DOWN, &adapter->state);
3647 /* disable receives in the hardware */
3649 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
3650 ew32(RCTL, rctl & ~E1000_RCTL_EN);
3651 /* flush and sleep below */
3653 netif_stop_queue(netdev);
3655 /* disable transmits in the hardware */
3657 tctl &= ~E1000_TCTL_EN;
3660 /* flush both disables and wait for them to finish */
3662 usleep_range(10000, 20000);
3664 e1000_irq_disable(adapter);
3666 del_timer_sync(&adapter->watchdog_timer);
3667 del_timer_sync(&adapter->phy_info_timer);
3669 netif_carrier_off(netdev);
3671 spin_lock(&adapter->stats64_lock);
3672 e1000e_update_stats(adapter);
3673 spin_unlock(&adapter->stats64_lock);
3675 e1000e_flush_descriptors(adapter);
3676 e1000_clean_tx_ring(adapter->tx_ring);
3677 e1000_clean_rx_ring(adapter->rx_ring);
3679 adapter->link_speed = 0;
3680 adapter->link_duplex = 0;
3682 if (!pci_channel_offline(adapter->pdev))
3683 e1000e_reset(adapter);
3686 * TODO: for power management, we could drop the link and
3687 * pci_disable_device here.
3691 void e1000e_reinit_locked(struct e1000_adapter *adapter)
3694 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
3695 usleep_range(1000, 2000);
3696 e1000e_down(adapter);
3698 clear_bit(__E1000_RESETTING, &adapter->state);
3702 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
3703 * @adapter: board private structure to initialize
3705 * e1000_sw_init initializes the Adapter private data structure.
3706 * Fields are initialized based on PCI device information and
3707 * OS network device settings (MTU size).
3709 static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
3711 struct net_device *netdev = adapter->netdev;
3713 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
3714 adapter->rx_ps_bsize0 = 128;
3715 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
3716 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
3717 adapter->tx_ring_count = E1000_DEFAULT_TXD;
3718 adapter->rx_ring_count = E1000_DEFAULT_RXD;
3720 spin_lock_init(&adapter->stats64_lock);
3722 e1000e_set_interrupt_capability(adapter);
3724 if (e1000_alloc_queues(adapter))
3727 /* Explicitly disable IRQ since the NIC can be in any state. */
3728 e1000_irq_disable(adapter);
3730 set_bit(__E1000_DOWN, &adapter->state);
3735 * e1000_intr_msi_test - Interrupt Handler
3736 * @irq: interrupt number
3737 * @data: pointer to a network interface device structure
3739 static irqreturn_t e1000_intr_msi_test(int irq, void *data)
3741 struct net_device *netdev = data;
3742 struct e1000_adapter *adapter = netdev_priv(netdev);
3743 struct e1000_hw *hw = &adapter->hw;
3744 u32 icr = er32(ICR);
3746 e_dbg("icr is %08X\n", icr);
3747 if (icr & E1000_ICR_RXSEQ) {
3748 adapter->flags &= ~FLAG_MSI_TEST_FAILED;
3756 * e1000_test_msi_interrupt - Returns 0 for successful test
3757 * @adapter: board private struct
3759 * code flow taken from tg3.c
3761 static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
3763 struct net_device *netdev = adapter->netdev;
3764 struct e1000_hw *hw = &adapter->hw;
3767 /* poll_enable hasn't been called yet, so don't need disable */
3768 /* clear any pending events */
3771 /* free the real vector and request a test handler */
3772 e1000_free_irq(adapter);
3773 e1000e_reset_interrupt_capability(adapter);
3775 /* Assume that the test fails, if it succeeds then the test
3776 * MSI irq handler will unset this flag */
3777 adapter->flags |= FLAG_MSI_TEST_FAILED;
3779 err = pci_enable_msi(adapter->pdev);
3781 goto msi_test_failed;
3783 err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0,
3784 netdev->name, netdev);
3786 pci_disable_msi(adapter->pdev);
3787 goto msi_test_failed;
3792 e1000_irq_enable(adapter);
3794 /* fire an unusual interrupt on the test handler */
3795 ew32(ICS, E1000_ICS_RXSEQ);
3799 e1000_irq_disable(adapter);
3803 if (adapter->flags & FLAG_MSI_TEST_FAILED) {
3804 adapter->int_mode = E1000E_INT_MODE_LEGACY;
3805 e_info("MSI interrupt test failed, using legacy interrupt.\n");
3807 e_dbg("MSI interrupt test succeeded!\n");
3810 free_irq(adapter->pdev->irq, netdev);
3811 pci_disable_msi(adapter->pdev);
3814 e1000e_set_interrupt_capability(adapter);
3815 return e1000_request_irq(adapter);
3819 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3820 * @adapter: board private struct
3822 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3824 static int e1000_test_msi(struct e1000_adapter *adapter)
3829 if (!(adapter->flags & FLAG_MSI_ENABLED))
3832 /* disable SERR in case the MSI write causes a master abort */
3833 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
3834 if (pci_cmd & PCI_COMMAND_SERR)
3835 pci_write_config_word(adapter->pdev, PCI_COMMAND,
3836 pci_cmd & ~PCI_COMMAND_SERR);
3838 err = e1000_test_msi_interrupt(adapter);
3840 /* re-enable SERR */
3841 if (pci_cmd & PCI_COMMAND_SERR) {
3842 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
3843 pci_cmd |= PCI_COMMAND_SERR;
3844 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);
3851 * e1000_open - Called when a network interface is made active
3852 * @netdev: network interface device structure
3854 * Returns 0 on success, negative value on failure
3856 * The open entry point is called when a network interface is made
3857 * active by the system (IFF_UP). At this point all resources needed
3858 * for transmit and receive operations are allocated, the interrupt
3859 * handler is registered with the OS, the watchdog timer is started,
3860 * and the stack is notified that the interface is ready.
3862 static int e1000_open(struct net_device *netdev)
3864 struct e1000_adapter *adapter = netdev_priv(netdev);
3865 struct e1000_hw *hw = &adapter->hw;
3866 struct pci_dev *pdev = adapter->pdev;
3869 /* disallow open during test */
3870 if (test_bit(__E1000_TESTING, &adapter->state))
3873 pm_runtime_get_sync(&pdev->dev);
3875 netif_carrier_off(netdev);
3877 /* allocate transmit descriptors */
3878 err = e1000e_setup_tx_resources(adapter->tx_ring);
3882 /* allocate receive descriptors */
3883 err = e1000e_setup_rx_resources(adapter->rx_ring);
3888 * If AMT is enabled, let the firmware know that the network
3889 * interface is now open and reset the part to a known state.
3891 if (adapter->flags & FLAG_HAS_AMT) {
3892 e1000e_get_hw_control(adapter);
3893 e1000e_reset(adapter);
3896 e1000e_power_up_phy(adapter);
3898 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
3899 if ((adapter->hw.mng_cookie.status &
3900 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
3901 e1000_update_mng_vlan(adapter);
3903 /* DMA latency requirement to workaround jumbo issue */
3904 if (adapter->hw.mac.type == e1000_pch2lan)
3905 pm_qos_add_request(&adapter->netdev->pm_qos_req,
3906 PM_QOS_CPU_DMA_LATENCY,
3907 PM_QOS_DEFAULT_VALUE);
3910 * before we allocate an interrupt, we must be ready to handle it.
3911 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3912 * as soon as we call pci_request_irq, so we have to setup our
3913 * clean_rx handler before we do so.
3915 e1000_configure(adapter);
3917 err = e1000_request_irq(adapter);
3922 * Work around PCIe errata with MSI interrupts causing some chipsets to
3923 * ignore e1000e MSI messages, which means we need to test our MSI
3926 if (adapter->int_mode != E1000E_INT_MODE_LEGACY) {
3927 err = e1000_test_msi(adapter);
3929 e_err("Interrupt allocation failed\n");
3934 /* From here on the code is the same as e1000e_up() */
3935 clear_bit(__E1000_DOWN, &adapter->state);
3937 napi_enable(&adapter->napi);
3939 e1000_irq_enable(adapter);
3941 adapter->tx_hang_recheck = false;
3942 netif_start_queue(netdev);
3944 adapter->idle_check = true;
3945 pm_runtime_put(&pdev->dev);
3947 /* fire a link status change interrupt to start the watchdog */
3948 if (adapter->msix_entries)
3949 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
3951 ew32(ICS, E1000_ICS_LSC);
3956 e1000e_release_hw_control(adapter);
3957 e1000_power_down_phy(adapter);
3958 e1000e_free_rx_resources(adapter->rx_ring);
3960 e1000e_free_tx_resources(adapter->tx_ring);
3962 e1000e_reset(adapter);
3963 pm_runtime_put_sync(&pdev->dev);
3969 * e1000_close - Disables a network interface
3970 * @netdev: network interface device structure
3972 * Returns 0, this is not allowed to fail
3974 * The close entry point is called when an interface is de-activated
3975 * by the OS. The hardware is still under the drivers control, but
3976 * needs to be disabled. A global MAC reset is issued to stop the
3977 * hardware, and all transmit and receive resources are freed.
3979 static int e1000_close(struct net_device *netdev)
3981 struct e1000_adapter *adapter = netdev_priv(netdev);
3982 struct pci_dev *pdev = adapter->pdev;
3983 int count = E1000_CHECK_RESET_COUNT;
3985 while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
3986 usleep_range(10000, 20000);
3988 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
3990 pm_runtime_get_sync(&pdev->dev);
3992 napi_disable(&adapter->napi);
3994 if (!test_bit(__E1000_DOWN, &adapter->state)) {
3995 e1000e_down(adapter);
3996 e1000_free_irq(adapter);
3998 e1000_power_down_phy(adapter);
4000 e1000e_free_tx_resources(adapter->tx_ring);
4001 e1000e_free_rx_resources(adapter->rx_ring);
4004 * kill manageability vlan ID if supported, but not if a vlan with
4005 * the same ID is registered on the host OS (let 8021q kill it)
4007 if (adapter->hw.mng_cookie.status &
4008 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)
4009 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
4012 * If AMT is enabled, let the firmware know that the network
4013 * interface is now closed
4015 if ((adapter->flags & FLAG_HAS_AMT) &&
4016 !test_bit(__E1000_TESTING, &adapter->state))
4017 e1000e_release_hw_control(adapter);
4019 if (adapter->hw.mac.type == e1000_pch2lan)
4020 pm_qos_remove_request(&adapter->netdev->pm_qos_req);
4022 pm_runtime_put_sync(&pdev->dev);
4027 * e1000_set_mac - Change the Ethernet Address of the NIC
4028 * @netdev: network interface device structure
4029 * @p: pointer to an address structure
4031 * Returns 0 on success, negative on failure
4033 static int e1000_set_mac(struct net_device *netdev, void *p)
4035 struct e1000_adapter *adapter = netdev_priv(netdev);
4036 struct e1000_hw *hw = &adapter->hw;
4037 struct sockaddr *addr = p;
4039 if (!is_valid_ether_addr(addr->sa_data))
4040 return -EADDRNOTAVAIL;
4042 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
4043 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
4045 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
4047 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) {
4048 /* activate the work around */
4049 e1000e_set_laa_state_82571(&adapter->hw, 1);
4052 * Hold a copy of the LAA in RAR[14] This is done so that
4053 * between the time RAR[0] gets clobbered and the time it
4054 * gets fixed (in e1000_watchdog), the actual LAA is in one
4055 * of the RARs and no incoming packets directed to this port
4056 * are dropped. Eventually the LAA will be in RAR[0] and
4059 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr,
4060 adapter->hw.mac.rar_entry_count - 1);
4067 * e1000e_update_phy_task - work thread to update phy
4068 * @work: pointer to our work struct
4070 * this worker thread exists because we must acquire a
4071 * semaphore to read the phy, which we could msleep while
4072 * waiting for it, and we can't msleep in a timer.
4074 static void e1000e_update_phy_task(struct work_struct *work)
4076 struct e1000_adapter *adapter = container_of(work,
4077 struct e1000_adapter, update_phy_task);
4079 if (test_bit(__E1000_DOWN, &adapter->state))
4082 e1000_get_phy_info(&adapter->hw);
4086 * Need to wait a few seconds after link up to get diagnostic information from
4089 static void e1000_update_phy_info(unsigned long data)
4091 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
4093 if (test_bit(__E1000_DOWN, &adapter->state))
4096 schedule_work(&adapter->update_phy_task);
4100 * e1000e_update_phy_stats - Update the PHY statistics counters
4101 * @adapter: board private structure
4103 * Read/clear the upper 16-bit PHY registers and read/accumulate lower
4105 static void e1000e_update_phy_stats(struct e1000_adapter *adapter)
4107 struct e1000_hw *hw = &adapter->hw;
4111 ret_val = hw->phy.ops.acquire(hw);
4116 * A page set is expensive so check if already on desired page.
4117 * If not, set to the page with the PHY status registers.
4120 ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
4124 if (phy_data != (HV_STATS_PAGE << IGP_PAGE_SHIFT)) {
4125 ret_val = hw->phy.ops.set_page(hw,
4126 HV_STATS_PAGE << IGP_PAGE_SHIFT);
4131 /* Single Collision Count */
4132 hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data);
4133 ret_val = hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data);
4135 adapter->stats.scc += phy_data;
4137 /* Excessive Collision Count */
4138 hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data);
4139 ret_val = hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data);
4141 adapter->stats.ecol += phy_data;
4143 /* Multiple Collision Count */
4144 hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data);
4145 ret_val = hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data);
4147 adapter->stats.mcc += phy_data;
4149 /* Late Collision Count */
4150 hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data);
4151 ret_val = hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data);
4153 adapter->stats.latecol += phy_data;
4155 /* Collision Count - also used for adaptive IFS */
4156 hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data);
4157 ret_val = hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data);
4159 hw->mac.collision_delta = phy_data;
4162 hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data);
4163 ret_val = hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data);
4165 adapter->stats.dc += phy_data;
4167 /* Transmit with no CRS */
4168 hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data);
4169 ret_val = hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data);
4171 adapter->stats.tncrs += phy_data;
4174 hw->phy.ops.release(hw);
4178 * e1000e_update_stats - Update the board statistics counters
4179 * @adapter: board private structure
4181 static void e1000e_update_stats(struct e1000_adapter *adapter)
4183 struct net_device *netdev = adapter->netdev;
4184 struct e1000_hw *hw = &adapter->hw;
4185 struct pci_dev *pdev = adapter->pdev;
4188 * Prevent stats update while adapter is being reset, or if the pci
4189 * connection is down.
4191 if (adapter->link_speed == 0)
4193 if (pci_channel_offline(pdev))
4196 adapter->stats.crcerrs += er32(CRCERRS);
4197 adapter->stats.gprc += er32(GPRC);
4198 adapter->stats.gorc += er32(GORCL);
4199 er32(GORCH); /* Clear gorc */
4200 adapter->stats.bprc += er32(BPRC);
4201 adapter->stats.mprc += er32(MPRC);
4202 adapter->stats.roc += er32(ROC);
4204 adapter->stats.mpc += er32(MPC);
4206 /* Half-duplex statistics */
4207 if (adapter->link_duplex == HALF_DUPLEX) {
4208 if (adapter->flags2 & FLAG2_HAS_PHY_STATS) {
4209 e1000e_update_phy_stats(adapter);
4211 adapter->stats.scc += er32(SCC);
4212 adapter->stats.ecol += er32(ECOL);
4213 adapter->stats.mcc += er32(MCC);
4214 adapter->stats.latecol += er32(LATECOL);
4215 adapter->stats.dc += er32(DC);
4217 hw->mac.collision_delta = er32(COLC);
4219 if ((hw->mac.type != e1000_82574) &&
4220 (hw->mac.type != e1000_82583))
4221 adapter->stats.tncrs += er32(TNCRS);
4223 adapter->stats.colc += hw->mac.collision_delta;
4226 adapter->stats.xonrxc += er32(XONRXC);
4227 adapter->stats.xontxc += er32(XONTXC);
4228 adapter->stats.xoffrxc += er32(XOFFRXC);
4229 adapter->stats.xofftxc += er32(XOFFTXC);
4230 adapter->stats.gptc += er32(GPTC);
4231 adapter->stats.gotc += er32(GOTCL);
4232 er32(GOTCH); /* Clear gotc */
4233 adapter->stats.rnbc += er32(RNBC);
4234 adapter->stats.ruc += er32(RUC);
4236 adapter->stats.mptc += er32(MPTC);
4237 adapter->stats.bptc += er32(BPTC);
4239 /* used for adaptive IFS */
4241 hw->mac.tx_packet_delta = er32(TPT);
4242 adapter->stats.tpt += hw->mac.tx_packet_delta;
4244 adapter->stats.algnerrc += er32(ALGNERRC);
4245 adapter->stats.rxerrc += er32(RXERRC);
4246 adapter->stats.cexterr += er32(CEXTERR);
4247 adapter->stats.tsctc += er32(TSCTC);
4248 adapter->stats.tsctfc += er32(TSCTFC);
4250 /* Fill out the OS statistics structure */
4251 netdev->stats.multicast = adapter->stats.mprc;
4252 netdev->stats.collisions = adapter->stats.colc;
4257 * RLEC on some newer hardware can be incorrect so build
4258 * our own version based on RUC and ROC
4260 netdev->stats.rx_errors = adapter->stats.rxerrc +
4261 adapter->stats.crcerrs + adapter->stats.algnerrc +
4262 adapter->stats.ruc + adapter->stats.roc +
4263 adapter->stats.cexterr;
4264 netdev->stats.rx_length_errors = adapter->stats.ruc +
4266 netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
4267 netdev->stats.rx_frame_errors = adapter->stats.algnerrc;
4268 netdev->stats.rx_missed_errors = adapter->stats.mpc;
4271 netdev->stats.tx_errors = adapter->stats.ecol +
4272 adapter->stats.latecol;
4273 netdev->stats.tx_aborted_errors = adapter->stats.ecol;
4274 netdev->stats.tx_window_errors = adapter->stats.latecol;
4275 netdev->stats.tx_carrier_errors = adapter->stats.tncrs;
4277 /* Tx Dropped needs to be maintained elsewhere */
4279 /* Management Stats */
4280 adapter->stats.mgptc += er32(MGTPTC);
4281 adapter->stats.mgprc += er32(MGTPRC);
4282 adapter->stats.mgpdc += er32(MGTPDC);
4286 * e1000_phy_read_status - Update the PHY register status snapshot
4287 * @adapter: board private structure
4289 static void e1000_phy_read_status(struct e1000_adapter *adapter)
4291 struct e1000_hw *hw = &adapter->hw;
4292 struct e1000_phy_regs *phy = &adapter->phy_regs;
4294 if ((er32(STATUS) & E1000_STATUS_LU) &&
4295 (adapter->hw.phy.media_type == e1000_media_type_copper)) {
4298 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr);
4299 ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr);
4300 ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise);
4301 ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa);
4302 ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion);
4303 ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000);
4304 ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000);
4305 ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus);
4307 e_warn("Error reading PHY register\n");
4310 * Do not read PHY registers if link is not up
4311 * Set values to typical power-on defaults
4313 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX);
4314 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL |
4315 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE |
4317 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP |
4318 ADVERTISE_ALL | ADVERTISE_CSMA);
4320 phy->expansion = EXPANSION_ENABLENPAGE;
4321 phy->ctrl1000 = ADVERTISE_1000FULL;
4323 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF);
4327 static void e1000_print_link_info(struct e1000_adapter *adapter)
4329 struct e1000_hw *hw = &adapter->hw;
4330 u32 ctrl = er32(CTRL);
4332 /* Link status message must follow this format for user tools */
4333 printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n",
4334 adapter->netdev->name,
4335 adapter->link_speed,
4336 adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half",
4337 (ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE) ? "Rx/Tx" :
4338 (ctrl & E1000_CTRL_RFCE) ? "Rx" :
4339 (ctrl & E1000_CTRL_TFCE) ? "Tx" : "None");
4342 static bool e1000e_has_link(struct e1000_adapter *adapter)
4344 struct e1000_hw *hw = &adapter->hw;
4345 bool link_active = false;
4349 * get_link_status is set on LSC (link status) interrupt or
4350 * Rx sequence error interrupt. get_link_status will stay
4351 * false until the check_for_link establishes link
4352 * for copper adapters ONLY
4354 switch (hw->phy.media_type) {
4355 case e1000_media_type_copper:
4356 if (hw->mac.get_link_status) {
4357 ret_val = hw->mac.ops.check_for_link(hw);
4358 link_active = !hw->mac.get_link_status;
4363 case e1000_media_type_fiber:
4364 ret_val = hw->mac.ops.check_for_link(hw);
4365 link_active = !!(er32(STATUS) & E1000_STATUS_LU);
4367 case e1000_media_type_internal_serdes:
4368 ret_val = hw->mac.ops.check_for_link(hw);
4369 link_active = adapter->hw.mac.serdes_has_link;
4372 case e1000_media_type_unknown:
4376 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) &&
4377 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
4378 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
4379 e_info("Gigabit has been disabled, downgrading speed\n");
4385 static void e1000e_enable_receives(struct e1000_adapter *adapter)
4387 /* make sure the receive unit is started */
4388 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
4389 (adapter->flags & FLAG_RX_RESTART_NOW)) {
4390 struct e1000_hw *hw = &adapter->hw;
4391 u32 rctl = er32(RCTL);
4392 ew32(RCTL, rctl | E1000_RCTL_EN);
4393 adapter->flags &= ~FLAG_RX_RESTART_NOW;
4397 static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter)
4399 struct e1000_hw *hw = &adapter->hw;
4402 * With 82574 controllers, PHY needs to be checked periodically
4403 * for hung state and reset, if two calls return true
4405 if (e1000_check_phy_82574(hw))
4406 adapter->phy_hang_count++;
4408 adapter->phy_hang_count = 0;
4410 if (adapter->phy_hang_count > 1) {
4411 adapter->phy_hang_count = 0;
4412 schedule_work(&adapter->reset_task);
4417 * e1000_watchdog - Timer Call-back
4418 * @data: pointer to adapter cast into an unsigned long
4420 static void e1000_watchdog(unsigned long data)
4422 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
4424 /* Do the rest outside of interrupt context */
4425 schedule_work(&adapter->watchdog_task);
4427 /* TODO: make this use queue_delayed_work() */
4430 static void e1000_watchdog_task(struct work_struct *work)
4432 struct e1000_adapter *adapter = container_of(work,
4433 struct e1000_adapter, watchdog_task);
4434 struct net_device *netdev = adapter->netdev;
4435 struct e1000_mac_info *mac = &adapter->hw.mac;
4436 struct e1000_phy_info *phy = &adapter->hw.phy;
4437 struct e1000_ring *tx_ring = adapter->tx_ring;
4438 struct e1000_hw *hw = &adapter->hw;
4441 if (test_bit(__E1000_DOWN, &adapter->state))
4444 link = e1000e_has_link(adapter);
4445 if ((netif_carrier_ok(netdev)) && link) {
4446 /* Cancel scheduled suspend requests. */
4447 pm_runtime_resume(netdev->dev.parent);
4449 e1000e_enable_receives(adapter);
4453 if ((e1000e_enable_tx_pkt_filtering(hw)) &&
4454 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id))
4455 e1000_update_mng_vlan(adapter);
4458 if (!netif_carrier_ok(netdev)) {
4461 /* Cancel scheduled suspend requests. */
4462 pm_runtime_resume(netdev->dev.parent);
4464 /* update snapshot of PHY registers on LSC */
4465 e1000_phy_read_status(adapter);
4466 mac->ops.get_link_up_info(&adapter->hw,
4467 &adapter->link_speed,
4468 &adapter->link_duplex);
4469 e1000_print_link_info(adapter);
4471 * On supported PHYs, check for duplex mismatch only
4472 * if link has autonegotiated at 10/100 half
4474 if ((hw->phy.type == e1000_phy_igp_3 ||
4475 hw->phy.type == e1000_phy_bm) &&
4476 (hw->mac.autoneg == true) &&
4477 (adapter->link_speed == SPEED_10 ||
4478 adapter->link_speed == SPEED_100) &&
4479 (adapter->link_duplex == HALF_DUPLEX)) {
4482 e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp);
4484 if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS))
4485 e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n");
4488 /* adjust timeout factor according to speed/duplex */
4489 adapter->tx_timeout_factor = 1;
4490 switch (adapter->link_speed) {
4493 adapter->tx_timeout_factor = 16;
4497 adapter->tx_timeout_factor = 10;
4502 * workaround: re-program speed mode bit after
4505 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) &&
4508 tarc0 = er32(TARC(0));
4509 tarc0 &= ~SPEED_MODE_BIT;
4510 ew32(TARC(0), tarc0);
4514 * disable TSO for pcie and 10/100 speeds, to avoid
4515 * some hardware issues
4517 if (!(adapter->flags & FLAG_TSO_FORCE)) {
4518 switch (adapter->link_speed) {
4521 e_info("10/100 speed: disabling TSO\n");
4522 netdev->features &= ~NETIF_F_TSO;
4523 netdev->features &= ~NETIF_F_TSO6;
4526 netdev->features |= NETIF_F_TSO;
4527 netdev->features |= NETIF_F_TSO6;
4536 * enable transmits in the hardware, need to do this
4537 * after setting TARC(0)
4540 tctl |= E1000_TCTL_EN;
4544 * Perform any post-link-up configuration before
4545 * reporting link up.
4547 if (phy->ops.cfg_on_link_up)
4548 phy->ops.cfg_on_link_up(hw);
4550 netif_carrier_on(netdev);
4552 if (!test_bit(__E1000_DOWN, &adapter->state))
4553 mod_timer(&adapter->phy_info_timer,
4554 round_jiffies(jiffies + 2 * HZ));
4557 if (netif_carrier_ok(netdev)) {
4558 adapter->link_speed = 0;
4559 adapter->link_duplex = 0;
4560 /* Link status message must follow this format */
4561 printk(KERN_INFO "e1000e: %s NIC Link is Down\n",
4562 adapter->netdev->name);
4563 netif_carrier_off(netdev);
4564 if (!test_bit(__E1000_DOWN, &adapter->state))
4565 mod_timer(&adapter->phy_info_timer,
4566 round_jiffies(jiffies + 2 * HZ));
4568 if (adapter->flags & FLAG_RX_NEEDS_RESTART)
4569 schedule_work(&adapter->reset_task);
4571 pm_schedule_suspend(netdev->dev.parent,
4577 spin_lock(&adapter->stats64_lock);
4578 e1000e_update_stats(adapter);
4580 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
4581 adapter->tpt_old = adapter->stats.tpt;
4582 mac->collision_delta = adapter->stats.colc - adapter->colc_old;
4583 adapter->colc_old = adapter->stats.colc;
4585 adapter->gorc = adapter->stats.gorc - adapter->gorc_old;
4586 adapter->gorc_old = adapter->stats.gorc;
4587 adapter->gotc = adapter->stats.gotc - adapter->gotc_old;
4588 adapter->gotc_old = adapter->stats.gotc;
4589 spin_unlock(&adapter->stats64_lock);
4591 e1000e_update_adaptive(&adapter->hw);
4593 if (!netif_carrier_ok(netdev) &&
4594 (e1000_desc_unused(tx_ring) + 1 < tx_ring->count)) {
4596 * We've lost link, so the controller stops DMA,
4597 * but we've got queued Tx work that's never going
4598 * to get done, so reset controller to flush Tx.
4599 * (Do the reset outside of interrupt context).
4601 schedule_work(&adapter->reset_task);
4602 /* return immediately since reset is imminent */
4606 /* Simple mode for Interrupt Throttle Rate (ITR) */
4607 if (adapter->itr_setting == 4) {
4609 * Symmetric Tx/Rx gets a reduced ITR=2000;
4610 * Total asymmetrical Tx or Rx gets ITR=8000;
4611 * everyone else is between 2000-8000.
4613 u32 goc = (adapter->gotc + adapter->gorc) / 10000;
4614 u32 dif = (adapter->gotc > adapter->gorc ?
4615 adapter->gotc - adapter->gorc :
4616 adapter->gorc - adapter->gotc) / 10000;
4617 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
4619 e1000e_write_itr(adapter, itr);
4622 /* Cause software interrupt to ensure Rx ring is cleaned */
4623 if (adapter->msix_entries)
4624 ew32(ICS, adapter->rx_ring->ims_val);
4626 ew32(ICS, E1000_ICS_RXDMT0);
4628 /* flush pending descriptors to memory before detecting Tx hang */
4629 e1000e_flush_descriptors(adapter);
4631 /* Force detection of hung controller every watchdog period */
4632 adapter->detect_tx_hung = true;
4635 * With 82571 controllers, LAA may be overwritten due to controller
4636 * reset from the other port. Set the appropriate LAA in RAR[0]
4638 if (e1000e_get_laa_state_82571(hw))
4639 hw->mac.ops.rar_set(hw, adapter->hw.mac.addr, 0);
4641 if (adapter->flags2 & FLAG2_CHECK_PHY_HANG)
4642 e1000e_check_82574_phy_workaround(adapter);
4644 /* Reset the timer */
4645 if (!test_bit(__E1000_DOWN, &adapter->state))
4646 mod_timer(&adapter->watchdog_timer,
4647 round_jiffies(jiffies + 2 * HZ));
4650 #define E1000_TX_FLAGS_CSUM 0x00000001
4651 #define E1000_TX_FLAGS_VLAN 0x00000002
4652 #define E1000_TX_FLAGS_TSO 0x00000004
4653 #define E1000_TX_FLAGS_IPV4 0x00000008
4654 #define E1000_TX_FLAGS_NO_FCS 0x00000010
4655 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
4656 #define E1000_TX_FLAGS_VLAN_SHIFT 16
4658 static int e1000_tso(struct e1000_ring *tx_ring, struct sk_buff *skb)
4660 struct e1000_context_desc *context_desc;
4661 struct e1000_buffer *buffer_info;
4664 u16 ipcse = 0, tucse, mss;
4665 u8 ipcss, ipcso, tucss, tucso, hdr_len;
4667 if (!skb_is_gso(skb))
4670 if (skb_header_cloned(skb)) {
4671 int err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
4677 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4678 mss = skb_shinfo(skb)->gso_size;
4679 if (skb->protocol == htons(ETH_P_IP)) {
4680 struct iphdr *iph = ip_hdr(skb);
4683 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
4685 cmd_length = E1000_TXD_CMD_IP;
4686 ipcse = skb_transport_offset(skb) - 1;
4687 } else if (skb_is_gso_v6(skb)) {
4688 ipv6_hdr(skb)->payload_len = 0;
4689 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
4690 &ipv6_hdr(skb)->daddr,
4694 ipcss = skb_network_offset(skb);
4695 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
4696 tucss = skb_transport_offset(skb);
4697 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
4700 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
4701 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
4703 i = tx_ring->next_to_use;
4704 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
4705 buffer_info = &tx_ring->buffer_info[i];
4707 context_desc->lower_setup.ip_fields.ipcss = ipcss;
4708 context_desc->lower_setup.ip_fields.ipcso = ipcso;
4709 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
4710 context_desc->upper_setup.tcp_fields.tucss = tucss;
4711 context_desc->upper_setup.tcp_fields.tucso = tucso;
4712 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
4713 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
4714 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
4715 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
4717 buffer_info->time_stamp = jiffies;
4718 buffer_info->next_to_watch = i;
4721 if (i == tx_ring->count)
4723 tx_ring->next_to_use = i;
4728 static bool e1000_tx_csum(struct e1000_ring *tx_ring, struct sk_buff *skb)
4730 struct e1000_adapter *adapter = tx_ring->adapter;
4731 struct e1000_context_desc *context_desc;
4732 struct e1000_buffer *buffer_info;
4735 u32 cmd_len = E1000_TXD_CMD_DEXT;
4738 if (skb->ip_summed != CHECKSUM_PARTIAL)
4741 if (skb->protocol == cpu_to_be16(ETH_P_8021Q))
4742 protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto;
4744 protocol = skb->protocol;
4747 case cpu_to_be16(ETH_P_IP):
4748 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
4749 cmd_len |= E1000_TXD_CMD_TCP;
4751 case cpu_to_be16(ETH_P_IPV6):
4752 /* XXX not handling all IPV6 headers */
4753 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
4754 cmd_len |= E1000_TXD_CMD_TCP;
4757 if (unlikely(net_ratelimit()))
4758 e_warn("checksum_partial proto=%x!\n",
4759 be16_to_cpu(protocol));
4763 css = skb_checksum_start_offset(skb);
4765 i = tx_ring->next_to_use;
4766 buffer_info = &tx_ring->buffer_info[i];
4767 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
4769 context_desc->lower_setup.ip_config = 0;
4770 context_desc->upper_setup.tcp_fields.tucss = css;
4771 context_desc->upper_setup.tcp_fields.tucso =
4772 css + skb->csum_offset;
4773 context_desc->upper_setup.tcp_fields.tucse = 0;
4774 context_desc->tcp_seg_setup.data = 0;
4775 context_desc->cmd_and_length = cpu_to_le32(cmd_len);
4777 buffer_info->time_stamp = jiffies;
4778 buffer_info->next_to_watch = i;
4781 if (i == tx_ring->count)
4783 tx_ring->next_to_use = i;
4788 #define E1000_MAX_PER_TXD 8192
4789 #define E1000_MAX_TXD_PWR 12
4791 static int e1000_tx_map(struct e1000_ring *tx_ring, struct sk_buff *skb,
4792 unsigned int first, unsigned int max_per_txd,
4793 unsigned int nr_frags, unsigned int mss)
4795 struct e1000_adapter *adapter = tx_ring->adapter;
4796 struct pci_dev *pdev = adapter->pdev;
4797 struct e1000_buffer *buffer_info;
4798 unsigned int len = skb_headlen(skb);
4799 unsigned int offset = 0, size, count = 0, i;
4800 unsigned int f, bytecount, segs;
4802 i = tx_ring->next_to_use;
4805 buffer_info = &tx_ring->buffer_info[i];
4806 size = min(len, max_per_txd);
4808 buffer_info->length = size;
4809 buffer_info->time_stamp = jiffies;
4810 buffer_info->next_to_watch = i;
4811 buffer_info->dma = dma_map_single(&pdev->dev,
4813 size, DMA_TO_DEVICE);
4814 buffer_info->mapped_as_page = false;
4815 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
4824 if (i == tx_ring->count)
4829 for (f = 0; f < nr_frags; f++) {
4830 const struct skb_frag_struct *frag;
4832 frag = &skb_shinfo(skb)->frags[f];
4833 len = skb_frag_size(frag);
4838 if (i == tx_ring->count)
4841 buffer_info = &tx_ring->buffer_info[i];
4842 size = min(len, max_per_txd);
4844 buffer_info->length = size;
4845 buffer_info->time_stamp = jiffies;
4846 buffer_info->next_to_watch = i;
4847 buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag,
4848 offset, size, DMA_TO_DEVICE);
4849 buffer_info->mapped_as_page = true;
4850 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
4859 segs = skb_shinfo(skb)->gso_segs ? : 1;
4860 /* multiply data chunks by size of headers */
4861 bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len;
4863 tx_ring->buffer_info[i].skb = skb;
4864 tx_ring->buffer_info[i].segs = segs;
4865 tx_ring->buffer_info[i].bytecount = bytecount;
4866 tx_ring->buffer_info[first].next_to_watch = i;
4871 dev_err(&pdev->dev, "Tx DMA map failed\n");
4872 buffer_info->dma = 0;
4878 i += tx_ring->count;
4880 buffer_info = &tx_ring->buffer_info[i];
4881 e1000_put_txbuf(tx_ring, buffer_info);
4887 static void e1000_tx_queue(struct e1000_ring *tx_ring, int tx_flags, int count)
4889 struct e1000_adapter *adapter = tx_ring->adapter;
4890 struct e1000_tx_desc *tx_desc = NULL;
4891 struct e1000_buffer *buffer_info;
4892 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
4895 if (tx_flags & E1000_TX_FLAGS_TSO) {
4896 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
4898 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
4900 if (tx_flags & E1000_TX_FLAGS_IPV4)
4901 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
4904 if (tx_flags & E1000_TX_FLAGS_CSUM) {
4905 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
4906 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
4909 if (tx_flags & E1000_TX_FLAGS_VLAN) {
4910 txd_lower |= E1000_TXD_CMD_VLE;
4911 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
4914 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
4915 txd_lower &= ~(E1000_TXD_CMD_IFCS);
4917 i = tx_ring->next_to_use;
4920 buffer_info = &tx_ring->buffer_info[i];
4921 tx_desc = E1000_TX_DESC(*tx_ring, i);
4922 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
4923 tx_desc->lower.data =
4924 cpu_to_le32(txd_lower | buffer_info->length);
4925 tx_desc->upper.data = cpu_to_le32(txd_upper);
4928 if (i == tx_ring->count)
4930 } while (--count > 0);
4932 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
4934 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */
4935 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
4936 tx_desc->lower.data &= ~(cpu_to_le32(E1000_TXD_CMD_IFCS));
4939 * Force memory writes to complete before letting h/w
4940 * know there are new descriptors to fetch. (Only
4941 * applicable for weak-ordered memory model archs,
4946 tx_ring->next_to_use = i;
4948 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
4949 e1000e_update_tdt_wa(tx_ring, i);
4951 writel(i, tx_ring->tail);
4954 * we need this if more than one processor can write to our tail
4955 * at a time, it synchronizes IO on IA64/Altix systems
4960 #define MINIMUM_DHCP_PACKET_SIZE 282
4961 static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
4962 struct sk_buff *skb)
4964 struct e1000_hw *hw = &adapter->hw;
4967 if (vlan_tx_tag_present(skb)) {
4968 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) &&
4969 (adapter->hw.mng_cookie.status &
4970 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
4974 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE)
4977 if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP))
4981 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14);
4984 if (ip->protocol != IPPROTO_UDP)
4987 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
4988 if (ntohs(udp->dest) != 67)
4991 offset = (u8 *)udp + 8 - skb->data;
4992 length = skb->len - offset;
4993 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length);
4999 static int __e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size)
5001 struct e1000_adapter *adapter = tx_ring->adapter;
5003 netif_stop_queue(adapter->netdev);
5005 * Herbert's original patch had:
5006 * smp_mb__after_netif_stop_queue();
5007 * but since that doesn't exist yet, just open code it.
5012 * We need to check again in a case another CPU has just
5013 * made room available.
5015 if (e1000_desc_unused(tx_ring) < size)
5019 netif_start_queue(adapter->netdev);
5020 ++adapter->restart_queue;
5024 static int e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size)
5026 if (e1000_desc_unused(tx_ring) >= size)
5028 return __e1000_maybe_stop_tx(tx_ring, size);
5031 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1)
5032 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
5033 struct net_device *netdev)
5035 struct e1000_adapter *adapter = netdev_priv(netdev);
5036 struct e1000_ring *tx_ring = adapter->tx_ring;
5038 unsigned int max_per_txd = E1000_MAX_PER_TXD;
5039 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
5040 unsigned int tx_flags = 0;
5041 unsigned int len = skb_headlen(skb);
5042 unsigned int nr_frags;
5048 if (test_bit(__E1000_DOWN, &adapter->state)) {
5049 dev_kfree_skb_any(skb);
5050 return NETDEV_TX_OK;
5053 if (skb->len <= 0) {
5054 dev_kfree_skb_any(skb);
5055 return NETDEV_TX_OK;
5058 mss = skb_shinfo(skb)->gso_size;
5060 * The controller does a simple calculation to
5061 * make sure there is enough room in the FIFO before
5062 * initiating the DMA for each buffer. The calc is:
5063 * 4 = ceil(buffer len/mss). To make sure we don't
5064 * overrun the FIFO, adjust the max buffer len if mss
5069 max_per_txd = min(mss << 2, max_per_txd);
5070 max_txd_pwr = fls(max_per_txd) - 1;
5073 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
5074 * points to just header, pull a few bytes of payload from
5075 * frags into skb->data
5077 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
5079 * we do this workaround for ES2LAN, but it is un-necessary,
5080 * avoiding it could save a lot of cycles
5082 if (skb->data_len && (hdr_len == len)) {
5083 unsigned int pull_size;
5085 pull_size = min_t(unsigned int, 4, skb->data_len);
5086 if (!__pskb_pull_tail(skb, pull_size)) {
5087 e_err("__pskb_pull_tail failed.\n");
5088 dev_kfree_skb_any(skb);
5089 return NETDEV_TX_OK;
5091 len = skb_headlen(skb);
5095 /* reserve a descriptor for the offload context */
5096 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
5100 count += TXD_USE_COUNT(len, max_txd_pwr);
5102 nr_frags = skb_shinfo(skb)->nr_frags;
5103 for (f = 0; f < nr_frags; f++)
5104 count += TXD_USE_COUNT(skb_frag_size(&skb_shinfo(skb)->frags[f]),
5107 if (adapter->hw.mac.tx_pkt_filtering)
5108 e1000_transfer_dhcp_info(adapter, skb);
5111 * need: count + 2 desc gap to keep tail from touching
5112 * head, otherwise try next time
5114 if (e1000_maybe_stop_tx(tx_ring, count + 2))
5115 return NETDEV_TX_BUSY;
5117 if (vlan_tx_tag_present(skb)) {
5118 tx_flags |= E1000_TX_FLAGS_VLAN;
5119 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
5122 first = tx_ring->next_to_use;
5124 tso = e1000_tso(tx_ring, skb);
5126 dev_kfree_skb_any(skb);
5127 return NETDEV_TX_OK;
5131 tx_flags |= E1000_TX_FLAGS_TSO;
5132 else if (e1000_tx_csum(tx_ring, skb))
5133 tx_flags |= E1000_TX_FLAGS_CSUM;
5136 * Old method was to assume IPv4 packet by default if TSO was enabled.
5137 * 82571 hardware supports TSO capabilities for IPv6 as well...
5138 * no longer assume, we must.
5140 if (skb->protocol == htons(ETH_P_IP))
5141 tx_flags |= E1000_TX_FLAGS_IPV4;
5143 if (unlikely(skb->no_fcs))
5144 tx_flags |= E1000_TX_FLAGS_NO_FCS;
5146 /* if count is 0 then mapping error has occurred */
5147 count = e1000_tx_map(tx_ring, skb, first, max_per_txd, nr_frags, mss);
5149 skb_tx_timestamp(skb);
5151 netdev_sent_queue(netdev, skb->len);
5152 e1000_tx_queue(tx_ring, tx_flags, count);
5153 /* Make sure there is space in the ring for the next send. */
5154 e1000_maybe_stop_tx(tx_ring, MAX_SKB_FRAGS + 2);
5157 dev_kfree_skb_any(skb);
5158 tx_ring->buffer_info[first].time_stamp = 0;
5159 tx_ring->next_to_use = first;
5162 return NETDEV_TX_OK;
5166 * e1000_tx_timeout - Respond to a Tx Hang
5167 * @netdev: network interface device structure
5169 static void e1000_tx_timeout(struct net_device *netdev)
5171 struct e1000_adapter *adapter = netdev_priv(netdev);
5173 /* Do the reset outside of interrupt context */
5174 adapter->tx_timeout_count++;
5175 schedule_work(&adapter->reset_task);
5178 static void e1000_reset_task(struct work_struct *work)
5180 struct e1000_adapter *adapter;
5181 adapter = container_of(work, struct e1000_adapter, reset_task);
5183 /* don't run the task if already down */
5184 if (test_bit(__E1000_DOWN, &adapter->state))
5187 if (!((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
5188 (adapter->flags & FLAG_RX_RESTART_NOW))) {
5189 e1000e_dump(adapter);
5190 e_err("Reset adapter\n");
5192 e1000e_reinit_locked(adapter);
5196 * e1000_get_stats64 - Get System Network Statistics
5197 * @netdev: network interface device structure
5198 * @stats: rtnl_link_stats64 pointer
5200 * Returns the address of the device statistics structure.
5202 struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev,
5203 struct rtnl_link_stats64 *stats)
5205 struct e1000_adapter *adapter = netdev_priv(netdev);
5207 memset(stats, 0, sizeof(struct rtnl_link_stats64));
5208 spin_lock(&adapter->stats64_lock);
5209 e1000e_update_stats(adapter);
5210 /* Fill out the OS statistics structure */
5211 stats->rx_bytes = adapter->stats.gorc;
5212 stats->rx_packets = adapter->stats.gprc;
5213 stats->tx_bytes = adapter->stats.gotc;
5214 stats->tx_packets = adapter->stats.gptc;
5215 stats->multicast = adapter->stats.mprc;
5216 stats->collisions = adapter->stats.colc;
5221 * RLEC on some newer hardware can be incorrect so build
5222 * our own version based on RUC and ROC
5224 stats->rx_errors = adapter->stats.rxerrc +
5225 adapter->stats.crcerrs + adapter->stats.algnerrc +
5226 adapter->stats.ruc + adapter->stats.roc +
5227 adapter->stats.cexterr;
5228 stats->rx_length_errors = adapter->stats.ruc +
5230 stats->rx_crc_errors = adapter->stats.crcerrs;
5231 stats->rx_frame_errors = adapter->stats.algnerrc;
5232 stats->rx_missed_errors = adapter->stats.mpc;
5235 stats->tx_errors = adapter->stats.ecol +
5236 adapter->stats.latecol;
5237 stats->tx_aborted_errors = adapter->stats.ecol;
5238 stats->tx_window_errors = adapter->stats.latecol;
5239 stats->tx_carrier_errors = adapter->stats.tncrs;
5241 /* Tx Dropped needs to be maintained elsewhere */
5243 spin_unlock(&adapter->stats64_lock);
5248 * e1000_change_mtu - Change the Maximum Transfer Unit
5249 * @netdev: network interface device structure
5250 * @new_mtu: new value for maximum frame size
5252 * Returns 0 on success, negative on failure
5254 static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
5256 struct e1000_adapter *adapter = netdev_priv(netdev);
5257 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
5259 /* Jumbo frame support */
5260 if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) &&
5261 !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
5262 e_err("Jumbo Frames not supported.\n");
5266 /* Supported frame sizes */
5267 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) ||
5268 (max_frame > adapter->max_hw_frame_size)) {
5269 e_err("Unsupported MTU setting\n");
5273 /* Jumbo frame workaround on 82579 and newer requires CRC be stripped */
5274 if ((adapter->hw.mac.type >= e1000_pch2lan) &&
5275 !(adapter->flags2 & FLAG2_CRC_STRIPPING) &&
5276 (new_mtu > ETH_DATA_LEN)) {
5277 e_err("Jumbo Frames not supported on this device when CRC stripping is disabled.\n");
5281 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
5282 usleep_range(1000, 2000);
5283 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
5284 adapter->max_frame_size = max_frame;
5285 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu);
5286 netdev->mtu = new_mtu;
5287 if (netif_running(netdev))
5288 e1000e_down(adapter);
5291 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
5292 * means we reserve 2 more, this pushes us to allocate from the next
5294 * i.e. RXBUFFER_2048 --> size-4096 slab
5295 * However with the new *_jumbo_rx* routines, jumbo receives will use
5299 if (max_frame <= 2048)
5300 adapter->rx_buffer_len = 2048;
5302 adapter->rx_buffer_len = 4096;
5304 /* adjust allocation if LPE protects us, and we aren't using SBP */
5305 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
5306 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
5307 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN
5310 if (netif_running(netdev))
5313 e1000e_reset(adapter);
5315 clear_bit(__E1000_RESETTING, &adapter->state);
5320 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
5323 struct e1000_adapter *adapter = netdev_priv(netdev);
5324 struct mii_ioctl_data *data = if_mii(ifr);
5326 if (adapter->hw.phy.media_type != e1000_media_type_copper)
5331 data->phy_id = adapter->hw.phy.addr;
5334 e1000_phy_read_status(adapter);
5336 switch (data->reg_num & 0x1F) {
5338 data->val_out = adapter->phy_regs.bmcr;
5341 data->val_out = adapter->phy_regs.bmsr;
5344 data->val_out = (adapter->hw.phy.id >> 16);
5347 data->val_out = (adapter->hw.phy.id & 0xFFFF);
5350 data->val_out = adapter->phy_regs.advertise;
5353 data->val_out = adapter->phy_regs.lpa;
5356 data->val_out = adapter->phy_regs.expansion;
5359 data->val_out = adapter->phy_regs.ctrl1000;
5362 data->val_out = adapter->phy_regs.stat1000;
5365 data->val_out = adapter->phy_regs.estatus;
5378 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
5384 return e1000_mii_ioctl(netdev, ifr, cmd);
5390 static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc)
5392 struct e1000_hw *hw = &adapter->hw;
5394 u16 phy_reg, wuc_enable;
5397 /* copy MAC RARs to PHY RARs */
5398 e1000_copy_rx_addrs_to_phy_ich8lan(hw);
5400 retval = hw->phy.ops.acquire(hw);
5402 e_err("Could not acquire PHY\n");
5406 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */
5407 retval = e1000_enable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
5411 /* copy MAC MTA to PHY MTA - only needed for pchlan */
5412 for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) {
5413 mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i);
5414 hw->phy.ops.write_reg_page(hw, BM_MTA(i),
5415 (u16)(mac_reg & 0xFFFF));
5416 hw->phy.ops.write_reg_page(hw, BM_MTA(i) + 1,
5417 (u16)((mac_reg >> 16) & 0xFFFF));
5420 /* configure PHY Rx Control register */
5421 hw->phy.ops.read_reg_page(&adapter->hw, BM_RCTL, &phy_reg);
5422 mac_reg = er32(RCTL);
5423 if (mac_reg & E1000_RCTL_UPE)
5424 phy_reg |= BM_RCTL_UPE;
5425 if (mac_reg & E1000_RCTL_MPE)
5426 phy_reg |= BM_RCTL_MPE;
5427 phy_reg &= ~(BM_RCTL_MO_MASK);
5428 if (mac_reg & E1000_RCTL_MO_3)
5429 phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT)
5430 << BM_RCTL_MO_SHIFT);
5431 if (mac_reg & E1000_RCTL_BAM)
5432 phy_reg |= BM_RCTL_BAM;
5433 if (mac_reg & E1000_RCTL_PMCF)
5434 phy_reg |= BM_RCTL_PMCF;
5435 mac_reg = er32(CTRL);
5436 if (mac_reg & E1000_CTRL_RFCE)
5437 phy_reg |= BM_RCTL_RFCE;
5438 hw->phy.ops.write_reg_page(&adapter->hw, BM_RCTL, phy_reg);
5440 /* enable PHY wakeup in MAC register */
5442 ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN);
5444 /* configure and enable PHY wakeup in PHY registers */
5445 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUFC, wufc);
5446 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUC, E1000_WUC_PME_EN);
5448 /* activate PHY wakeup */
5449 wuc_enable |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT;
5450 retval = e1000_disable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
5452 e_err("Could not set PHY Host Wakeup bit\n");
5454 hw->phy.ops.release(hw);
5459 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake,
5462 struct net_device *netdev = pci_get_drvdata(pdev);
5463 struct e1000_adapter *adapter = netdev_priv(netdev);
5464 struct e1000_hw *hw = &adapter->hw;
5465 u32 ctrl, ctrl_ext, rctl, status;
5466 /* Runtime suspend should only enable wakeup for link changes */
5467 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol;
5470 netif_device_detach(netdev);
5472 if (netif_running(netdev)) {
5473 int count = E1000_CHECK_RESET_COUNT;
5475 while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
5476 usleep_range(10000, 20000);
5478 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
5479 e1000e_down(adapter);
5480 e1000_free_irq(adapter);
5482 e1000e_reset_interrupt_capability(adapter);
5484 retval = pci_save_state(pdev);
5488 status = er32(STATUS);
5489 if (status & E1000_STATUS_LU)
5490 wufc &= ~E1000_WUFC_LNKC;
5493 e1000_setup_rctl(adapter);
5494 e1000e_set_rx_mode(netdev);
5496 /* turn on all-multi mode if wake on multicast is enabled */
5497 if (wufc & E1000_WUFC_MC) {
5499 rctl |= E1000_RCTL_MPE;
5504 /* advertise wake from D3Cold */
5505 #define E1000_CTRL_ADVD3WUC 0x00100000
5506 /* phy power management enable */
5507 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5508 ctrl |= E1000_CTRL_ADVD3WUC;
5509 if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP))
5510 ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT;
5513 if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
5514 adapter->hw.phy.media_type ==
5515 e1000_media_type_internal_serdes) {
5516 /* keep the laser running in D3 */
5517 ctrl_ext = er32(CTRL_EXT);
5518 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA;
5519 ew32(CTRL_EXT, ctrl_ext);
5522 if (adapter->flags & FLAG_IS_ICH)
5523 e1000_suspend_workarounds_ich8lan(&adapter->hw);
5525 /* Allow time for pending master requests to run */
5526 e1000e_disable_pcie_master(&adapter->hw);
5528 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
5529 /* enable wakeup by the PHY */
5530 retval = e1000_init_phy_wakeup(adapter, wufc);
5534 /* enable wakeup by the MAC */
5536 ew32(WUC, E1000_WUC_PME_EN);
5543 *enable_wake = !!wufc;
5545 /* make sure adapter isn't asleep if manageability is enabled */
5546 if ((adapter->flags & FLAG_MNG_PT_ENABLED) ||
5547 (hw->mac.ops.check_mng_mode(hw)))
5548 *enable_wake = true;
5550 if (adapter->hw.phy.type == e1000_phy_igp_3)
5551 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw);
5554 * Release control of h/w to f/w. If f/w is AMT enabled, this
5555 * would have already happened in close and is redundant.
5557 e1000e_release_hw_control(adapter);
5559 pci_disable_device(pdev);
5564 static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake)
5566 if (sleep && wake) {
5567 pci_prepare_to_sleep(pdev);
5571 pci_wake_from_d3(pdev, wake);
5572 pci_set_power_state(pdev, PCI_D3hot);
5575 static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep,
5578 struct net_device *netdev = pci_get_drvdata(pdev);
5579 struct e1000_adapter *adapter = netdev_priv(netdev);
5582 * The pci-e switch on some quad port adapters will report a
5583 * correctable error when the MAC transitions from D0 to D3. To
5584 * prevent this we need to mask off the correctable errors on the
5585 * downstream port of the pci-e switch.
5587 if (adapter->flags & FLAG_IS_QUAD_PORT) {
5588 struct pci_dev *us_dev = pdev->bus->self;
5589 int pos = pci_pcie_cap(us_dev);
5592 pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl);
5593 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL,
5594 (devctl & ~PCI_EXP_DEVCTL_CERE));
5596 e1000_power_off(pdev, sleep, wake);
5598 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl);
5600 e1000_power_off(pdev, sleep, wake);
5604 #ifdef CONFIG_PCIEASPM
5605 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
5607 pci_disable_link_state_locked(pdev, state);
5610 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
5616 * Both device and parent should have the same ASPM setting.
5617 * Disable ASPM in downstream component first and then upstream.
5619 pos = pci_pcie_cap(pdev);
5620 pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, ®16);
5622 pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16);
5624 if (!pdev->bus->self)
5627 pos = pci_pcie_cap(pdev->bus->self);
5628 pci_read_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, ®16);
5630 pci_write_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, reg16);
5633 static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
5635 dev_info(&pdev->dev, "Disabling ASPM %s %s\n",
5636 (state & PCIE_LINK_STATE_L0S) ? "L0s" : "",
5637 (state & PCIE_LINK_STATE_L1) ? "L1" : "");
5639 __e1000e_disable_aspm(pdev, state);
5643 static bool e1000e_pm_ready(struct e1000_adapter *adapter)
5645 return !!adapter->tx_ring->buffer_info;
5648 static int __e1000_resume(struct pci_dev *pdev)
5650 struct net_device *netdev = pci_get_drvdata(pdev);
5651 struct e1000_adapter *adapter = netdev_priv(netdev);
5652 struct e1000_hw *hw = &adapter->hw;
5653 u16 aspm_disable_flag = 0;
5656 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
5657 aspm_disable_flag = PCIE_LINK_STATE_L0S;
5658 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
5659 aspm_disable_flag |= PCIE_LINK_STATE_L1;
5660 if (aspm_disable_flag)
5661 e1000e_disable_aspm(pdev, aspm_disable_flag);
5663 pci_set_power_state(pdev, PCI_D0);
5664 pci_restore_state(pdev);
5665 pci_save_state(pdev);
5667 e1000e_set_interrupt_capability(adapter);
5668 if (netif_running(netdev)) {
5669 err = e1000_request_irq(adapter);
5674 if (hw->mac.type >= e1000_pch2lan)
5675 e1000_resume_workarounds_pchlan(&adapter->hw);
5677 e1000e_power_up_phy(adapter);
5679 /* report the system wakeup cause from S3/S4 */
5680 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
5683 e1e_rphy(&adapter->hw, BM_WUS, &phy_data);
5685 e_info("PHY Wakeup cause - %s\n",
5686 phy_data & E1000_WUS_EX ? "Unicast Packet" :
5687 phy_data & E1000_WUS_MC ? "Multicast Packet" :
5688 phy_data & E1000_WUS_BC ? "Broadcast Packet" :
5689 phy_data & E1000_WUS_MAG ? "Magic Packet" :
5690 phy_data & E1000_WUS_LNKC ?
5691 "Link Status Change" : "other");
5693 e1e_wphy(&adapter->hw, BM_WUS, ~0);
5695 u32 wus = er32(WUS);
5697 e_info("MAC Wakeup cause - %s\n",
5698 wus & E1000_WUS_EX ? "Unicast Packet" :
5699 wus & E1000_WUS_MC ? "Multicast Packet" :
5700 wus & E1000_WUS_BC ? "Broadcast Packet" :
5701 wus & E1000_WUS_MAG ? "Magic Packet" :
5702 wus & E1000_WUS_LNKC ? "Link Status Change" :
5708 e1000e_reset(adapter);
5710 e1000_init_manageability_pt(adapter);
5712 if (netif_running(netdev))
5715 netif_device_attach(netdev);
5718 * If the controller has AMT, do not set DRV_LOAD until the interface
5719 * is up. For all other cases, let the f/w know that the h/w is now
5720 * under the control of the driver.
5722 if (!(adapter->flags & FLAG_HAS_AMT))
5723 e1000e_get_hw_control(adapter);
5728 #ifdef CONFIG_PM_SLEEP
5729 static int e1000_suspend(struct device *dev)
5731 struct pci_dev *pdev = to_pci_dev(dev);
5735 retval = __e1000_shutdown(pdev, &wake, false);
5737 e1000_complete_shutdown(pdev, true, wake);
5742 static int e1000_resume(struct device *dev)
5744 struct pci_dev *pdev = to_pci_dev(dev);
5745 struct net_device *netdev = pci_get_drvdata(pdev);
5746 struct e1000_adapter *adapter = netdev_priv(netdev);
5748 if (e1000e_pm_ready(adapter))
5749 adapter->idle_check = true;
5751 return __e1000_resume(pdev);
5753 #endif /* CONFIG_PM_SLEEP */
5755 #ifdef CONFIG_PM_RUNTIME
5756 static int e1000_runtime_suspend(struct device *dev)
5758 struct pci_dev *pdev = to_pci_dev(dev);
5759 struct net_device *netdev = pci_get_drvdata(pdev);
5760 struct e1000_adapter *adapter = netdev_priv(netdev);
5762 if (e1000e_pm_ready(adapter)) {
5765 __e1000_shutdown(pdev, &wake, true);
5771 static int e1000_idle(struct device *dev)
5773 struct pci_dev *pdev = to_pci_dev(dev);
5774 struct net_device *netdev = pci_get_drvdata(pdev);
5775 struct e1000_adapter *adapter = netdev_priv(netdev);
5777 if (!e1000e_pm_ready(adapter))
5780 if (adapter->idle_check) {
5781 adapter->idle_check = false;
5782 if (!e1000e_has_link(adapter))
5783 pm_schedule_suspend(dev, MSEC_PER_SEC);
5789 static int e1000_runtime_resume(struct device *dev)
5791 struct pci_dev *pdev = to_pci_dev(dev);
5792 struct net_device *netdev = pci_get_drvdata(pdev);
5793 struct e1000_adapter *adapter = netdev_priv(netdev);
5795 if (!e1000e_pm_ready(adapter))
5798 adapter->idle_check = !dev->power.runtime_auto;
5799 return __e1000_resume(pdev);
5801 #endif /* CONFIG_PM_RUNTIME */
5802 #endif /* CONFIG_PM */
5804 static void e1000_shutdown(struct pci_dev *pdev)
5808 __e1000_shutdown(pdev, &wake, false);
5810 if (system_state == SYSTEM_POWER_OFF)
5811 e1000_complete_shutdown(pdev, false, wake);
5814 #ifdef CONFIG_NET_POLL_CONTROLLER
5816 static irqreturn_t e1000_intr_msix(int irq, void *data)
5818 struct net_device *netdev = data;
5819 struct e1000_adapter *adapter = netdev_priv(netdev);
5821 if (adapter->msix_entries) {
5822 int vector, msix_irq;
5825 msix_irq = adapter->msix_entries[vector].vector;
5826 disable_irq(msix_irq);
5827 e1000_intr_msix_rx(msix_irq, netdev);
5828 enable_irq(msix_irq);
5831 msix_irq = adapter->msix_entries[vector].vector;
5832 disable_irq(msix_irq);
5833 e1000_intr_msix_tx(msix_irq, netdev);
5834 enable_irq(msix_irq);
5837 msix_irq = adapter->msix_entries[vector].vector;
5838 disable_irq(msix_irq);
5839 e1000_msix_other(msix_irq, netdev);
5840 enable_irq(msix_irq);
5847 * Polling 'interrupt' - used by things like netconsole to send skbs
5848 * without having to re-enable interrupts. It's not called while
5849 * the interrupt routine is executing.
5851 static void e1000_netpoll(struct net_device *netdev)
5853 struct e1000_adapter *adapter = netdev_priv(netdev);
5855 switch (adapter->int_mode) {
5856 case E1000E_INT_MODE_MSIX:
5857 e1000_intr_msix(adapter->pdev->irq, netdev);
5859 case E1000E_INT_MODE_MSI:
5860 disable_irq(adapter->pdev->irq);
5861 e1000_intr_msi(adapter->pdev->irq, netdev);
5862 enable_irq(adapter->pdev->irq);
5864 default: /* E1000E_INT_MODE_LEGACY */
5865 disable_irq(adapter->pdev->irq);
5866 e1000_intr(adapter->pdev->irq, netdev);
5867 enable_irq(adapter->pdev->irq);
5874 * e1000_io_error_detected - called when PCI error is detected
5875 * @pdev: Pointer to PCI device
5876 * @state: The current pci connection state
5878 * This function is called after a PCI bus error affecting
5879 * this device has been detected.
5881 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
5882 pci_channel_state_t state)
5884 struct net_device *netdev = pci_get_drvdata(pdev);
5885 struct e1000_adapter *adapter = netdev_priv(netdev);
5887 netif_device_detach(netdev);
5889 if (state == pci_channel_io_perm_failure)
5890 return PCI_ERS_RESULT_DISCONNECT;
5892 if (netif_running(netdev))
5893 e1000e_down(adapter);
5894 pci_disable_device(pdev);
5896 /* Request a slot slot reset. */
5897 return PCI_ERS_RESULT_NEED_RESET;
5901 * e1000_io_slot_reset - called after the pci bus has been reset.
5902 * @pdev: Pointer to PCI device
5904 * Restart the card from scratch, as if from a cold-boot. Implementation
5905 * resembles the first-half of the e1000_resume routine.
5907 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
5909 struct net_device *netdev = pci_get_drvdata(pdev);
5910 struct e1000_adapter *adapter = netdev_priv(netdev);
5911 struct e1000_hw *hw = &adapter->hw;
5912 u16 aspm_disable_flag = 0;
5914 pci_ers_result_t result;
5916 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
5917 aspm_disable_flag = PCIE_LINK_STATE_L0S;
5918 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
5919 aspm_disable_flag |= PCIE_LINK_STATE_L1;
5920 if (aspm_disable_flag)
5921 e1000e_disable_aspm(pdev, aspm_disable_flag);
5923 err = pci_enable_device_mem(pdev);
5926 "Cannot re-enable PCI device after reset.\n");
5927 result = PCI_ERS_RESULT_DISCONNECT;
5929 pci_set_master(pdev);
5930 pdev->state_saved = true;
5931 pci_restore_state(pdev);
5933 pci_enable_wake(pdev, PCI_D3hot, 0);
5934 pci_enable_wake(pdev, PCI_D3cold, 0);
5936 e1000e_reset(adapter);
5938 result = PCI_ERS_RESULT_RECOVERED;
5941 pci_cleanup_aer_uncorrect_error_status(pdev);
5947 * e1000_io_resume - called when traffic can start flowing again.
5948 * @pdev: Pointer to PCI device
5950 * This callback is called when the error recovery driver tells us that
5951 * its OK to resume normal operation. Implementation resembles the
5952 * second-half of the e1000_resume routine.
5954 static void e1000_io_resume(struct pci_dev *pdev)
5956 struct net_device *netdev = pci_get_drvdata(pdev);
5957 struct e1000_adapter *adapter = netdev_priv(netdev);
5959 e1000_init_manageability_pt(adapter);
5961 if (netif_running(netdev)) {
5962 if (e1000e_up(adapter)) {
5964 "can't bring device back up after reset\n");
5969 netif_device_attach(netdev);
5972 * If the controller has AMT, do not set DRV_LOAD until the interface
5973 * is up. For all other cases, let the f/w know that the h/w is now
5974 * under the control of the driver.
5976 if (!(adapter->flags & FLAG_HAS_AMT))
5977 e1000e_get_hw_control(adapter);
5981 static void e1000_print_device_info(struct e1000_adapter *adapter)
5983 struct e1000_hw *hw = &adapter->hw;
5984 struct net_device *netdev = adapter->netdev;
5986 u8 pba_str[E1000_PBANUM_LENGTH];
5988 /* print bus type/speed/width info */
5989 e_info("(PCI Express:2.5GT/s:%s) %pM\n",
5991 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
5995 e_info("Intel(R) PRO/%s Network Connection\n",
5996 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000");
5997 ret_val = e1000_read_pba_string_generic(hw, pba_str,
5998 E1000_PBANUM_LENGTH);
6000 strlcpy((char *)pba_str, "Unknown", sizeof(pba_str));
6001 e_info("MAC: %d, PHY: %d, PBA No: %s\n",
6002 hw->mac.type, hw->phy.type, pba_str);
6005 static void e1000_eeprom_checks(struct e1000_adapter *adapter)
6007 struct e1000_hw *hw = &adapter->hw;
6011 if (hw->mac.type != e1000_82573)
6014 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf);
6016 if (!ret_val && (!(buf & (1 << 0)))) {
6017 /* Deep Smart Power Down (DSPD) */
6018 dev_warn(&adapter->pdev->dev,
6019 "Warning: detected DSPD enabled in EEPROM\n");
6023 static int e1000_set_features(struct net_device *netdev,
6024 netdev_features_t features)
6026 struct e1000_adapter *adapter = netdev_priv(netdev);
6027 netdev_features_t changed = features ^ netdev->features;
6029 if (changed & (NETIF_F_TSO | NETIF_F_TSO6))
6030 adapter->flags |= FLAG_TSO_FORCE;
6032 if (!(changed & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX |
6033 NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_RXFCS |
6037 if (changed & NETIF_F_RXFCS) {
6038 if (features & NETIF_F_RXFCS) {
6039 adapter->flags2 &= ~FLAG2_CRC_STRIPPING;
6041 /* We need to take it back to defaults, which might mean
6042 * stripping is still disabled at the adapter level.
6044 if (adapter->flags2 & FLAG2_DFLT_CRC_STRIPPING)
6045 adapter->flags2 |= FLAG2_CRC_STRIPPING;
6047 adapter->flags2 &= ~FLAG2_CRC_STRIPPING;
6051 netdev->features = features;
6053 if (netif_running(netdev))
6054 e1000e_reinit_locked(adapter);
6056 e1000e_reset(adapter);
6061 static const struct net_device_ops e1000e_netdev_ops = {
6062 .ndo_open = e1000_open,
6063 .ndo_stop = e1000_close,
6064 .ndo_start_xmit = e1000_xmit_frame,
6065 .ndo_get_stats64 = e1000e_get_stats64,
6066 .ndo_set_rx_mode = e1000e_set_rx_mode,
6067 .ndo_set_mac_address = e1000_set_mac,
6068 .ndo_change_mtu = e1000_change_mtu,
6069 .ndo_do_ioctl = e1000_ioctl,
6070 .ndo_tx_timeout = e1000_tx_timeout,
6071 .ndo_validate_addr = eth_validate_addr,
6073 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid,
6074 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid,
6075 #ifdef CONFIG_NET_POLL_CONTROLLER
6076 .ndo_poll_controller = e1000_netpoll,
6078 .ndo_set_features = e1000_set_features,
6082 * e1000_probe - Device Initialization Routine
6083 * @pdev: PCI device information struct
6084 * @ent: entry in e1000_pci_tbl
6086 * Returns 0 on success, negative on failure
6088 * e1000_probe initializes an adapter identified by a pci_dev structure.
6089 * The OS initialization, configuring of the adapter private structure,
6090 * and a hardware reset occur.
6092 static int __devinit e1000_probe(struct pci_dev *pdev,
6093 const struct pci_device_id *ent)
6095 struct net_device *netdev;
6096 struct e1000_adapter *adapter;
6097 struct e1000_hw *hw;
6098 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data];
6099 resource_size_t mmio_start, mmio_len;
6100 resource_size_t flash_start, flash_len;
6101 static int cards_found;
6102 u16 aspm_disable_flag = 0;
6103 int i, err, pci_using_dac;
6104 u16 eeprom_data = 0;
6105 u16 eeprom_apme_mask = E1000_EEPROM_APME;
6107 if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S)
6108 aspm_disable_flag = PCIE_LINK_STATE_L0S;
6109 if (ei->flags2 & FLAG2_DISABLE_ASPM_L1)
6110 aspm_disable_flag |= PCIE_LINK_STATE_L1;
6111 if (aspm_disable_flag)
6112 e1000e_disable_aspm(pdev, aspm_disable_flag);
6114 err = pci_enable_device_mem(pdev);
6119 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
6121 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
6125 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
6127 err = dma_set_coherent_mask(&pdev->dev,
6130 dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
6136 err = pci_request_selected_regions_exclusive(pdev,
6137 pci_select_bars(pdev, IORESOURCE_MEM),
6138 e1000e_driver_name);
6142 /* AER (Advanced Error Reporting) hooks */
6143 pci_enable_pcie_error_reporting(pdev);
6145 pci_set_master(pdev);
6146 /* PCI config space info */
6147 err = pci_save_state(pdev);
6149 goto err_alloc_etherdev;
6152 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
6154 goto err_alloc_etherdev;
6156 SET_NETDEV_DEV(netdev, &pdev->dev);
6158 netdev->irq = pdev->irq;
6160 pci_set_drvdata(pdev, netdev);
6161 adapter = netdev_priv(netdev);
6163 adapter->netdev = netdev;
6164 adapter->pdev = pdev;
6166 adapter->pba = ei->pba;
6167 adapter->flags = ei->flags;
6168 adapter->flags2 = ei->flags2;
6169 adapter->hw.adapter = adapter;
6170 adapter->hw.mac.type = ei->mac;
6171 adapter->max_hw_frame_size = ei->max_hw_frame_size;
6172 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
6174 mmio_start = pci_resource_start(pdev, 0);
6175 mmio_len = pci_resource_len(pdev, 0);
6178 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
6179 if (!adapter->hw.hw_addr)
6182 if ((adapter->flags & FLAG_HAS_FLASH) &&
6183 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
6184 flash_start = pci_resource_start(pdev, 1);
6185 flash_len = pci_resource_len(pdev, 1);
6186 adapter->hw.flash_address = ioremap(flash_start, flash_len);
6187 if (!adapter->hw.flash_address)
6191 /* construct the net_device struct */
6192 netdev->netdev_ops = &e1000e_netdev_ops;
6193 e1000e_set_ethtool_ops(netdev);
6194 netdev->watchdog_timeo = 5 * HZ;
6195 netif_napi_add(netdev, &adapter->napi, e1000e_poll, 64);
6196 strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name));
6198 netdev->mem_start = mmio_start;
6199 netdev->mem_end = mmio_start + mmio_len;
6201 adapter->bd_number = cards_found++;
6203 e1000e_check_options(adapter);
6205 /* setup adapter struct */
6206 err = e1000_sw_init(adapter);
6210 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
6211 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
6212 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
6214 err = ei->get_variants(adapter);
6218 if ((adapter->flags & FLAG_IS_ICH) &&
6219 (adapter->flags & FLAG_READ_ONLY_NVM))
6220 e1000e_write_protect_nvm_ich8lan(&adapter->hw);
6222 hw->mac.ops.get_bus_info(&adapter->hw);
6224 adapter->hw.phy.autoneg_wait_to_complete = 0;
6226 /* Copper options */
6227 if (adapter->hw.phy.media_type == e1000_media_type_copper) {
6228 adapter->hw.phy.mdix = AUTO_ALL_MODES;
6229 adapter->hw.phy.disable_polarity_correction = 0;
6230 adapter->hw.phy.ms_type = e1000_ms_hw_default;
6233 if (hw->phy.ops.check_reset_block && hw->phy.ops.check_reset_block(hw))
6234 dev_info(&pdev->dev,
6235 "PHY reset is blocked due to SOL/IDER session.\n");
6237 /* Set initial default active device features */
6238 netdev->features = (NETIF_F_SG |
6239 NETIF_F_HW_VLAN_RX |
6240 NETIF_F_HW_VLAN_TX |
6247 /* Set user-changeable features (subset of all device features) */
6248 netdev->hw_features = netdev->features;
6249 netdev->hw_features |= NETIF_F_RXFCS;
6250 netdev->priv_flags |= IFF_SUPP_NOFCS;
6251 netdev->hw_features |= NETIF_F_RXALL;
6253 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
6254 netdev->features |= NETIF_F_HW_VLAN_FILTER;
6256 netdev->vlan_features |= (NETIF_F_SG |
6261 netdev->priv_flags |= IFF_UNICAST_FLT;
6263 if (pci_using_dac) {
6264 netdev->features |= NETIF_F_HIGHDMA;
6265 netdev->vlan_features |= NETIF_F_HIGHDMA;
6268 if (e1000e_enable_mng_pass_thru(&adapter->hw))
6269 adapter->flags |= FLAG_MNG_PT_ENABLED;
6272 * before reading the NVM, reset the controller to
6273 * put the device in a known good starting state
6275 adapter->hw.mac.ops.reset_hw(&adapter->hw);
6278 * systems with ASPM and others may see the checksum fail on the first
6279 * attempt. Let's give it a few tries
6282 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0)
6285 dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n");
6291 e1000_eeprom_checks(adapter);
6293 /* copy the MAC address */
6294 if (e1000e_read_mac_addr(&adapter->hw))
6296 "NVM Read Error while reading MAC address\n");
6298 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
6299 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
6301 if (!is_valid_ether_addr(netdev->perm_addr)) {
6302 dev_err(&pdev->dev, "Invalid MAC Address: %pM\n",
6308 init_timer(&adapter->watchdog_timer);
6309 adapter->watchdog_timer.function = e1000_watchdog;
6310 adapter->watchdog_timer.data = (unsigned long) adapter;
6312 init_timer(&adapter->phy_info_timer);
6313 adapter->phy_info_timer.function = e1000_update_phy_info;
6314 adapter->phy_info_timer.data = (unsigned long) adapter;
6316 INIT_WORK(&adapter->reset_task, e1000_reset_task);
6317 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
6318 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround);
6319 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task);
6320 INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang);
6322 /* Initialize link parameters. User can change them with ethtool */
6323 adapter->hw.mac.autoneg = 1;
6324 adapter->fc_autoneg = true;
6325 adapter->hw.fc.requested_mode = e1000_fc_default;
6326 adapter->hw.fc.current_mode = e1000_fc_default;
6327 adapter->hw.phy.autoneg_advertised = 0x2f;
6329 /* ring size defaults */
6330 adapter->rx_ring->count = 256;
6331 adapter->tx_ring->count = 256;
6334 * Initial Wake on LAN setting - If APM wake is enabled in
6335 * the EEPROM, enable the ACPI Magic Packet filter
6337 if (adapter->flags & FLAG_APME_IN_WUC) {
6338 /* APME bit in EEPROM is mapped to WUC.APME */
6339 eeprom_data = er32(WUC);
6340 eeprom_apme_mask = E1000_WUC_APME;
6341 if ((hw->mac.type > e1000_ich10lan) &&
6342 (eeprom_data & E1000_WUC_PHY_WAKE))
6343 adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP;
6344 } else if (adapter->flags & FLAG_APME_IN_CTRL3) {
6345 if (adapter->flags & FLAG_APME_CHECK_PORT_B &&
6346 (adapter->hw.bus.func == 1))
6347 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_B,
6350 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_A,
6354 /* fetch WoL from EEPROM */
6355 if (eeprom_data & eeprom_apme_mask)
6356 adapter->eeprom_wol |= E1000_WUFC_MAG;
6359 * now that we have the eeprom settings, apply the special cases
6360 * where the eeprom may be wrong or the board simply won't support
6361 * wake on lan on a particular port
6363 if (!(adapter->flags & FLAG_HAS_WOL))
6364 adapter->eeprom_wol = 0;
6366 /* initialize the wol settings based on the eeprom settings */
6367 adapter->wol = adapter->eeprom_wol;
6368 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
6370 /* save off EEPROM version number */
6371 e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers);
6373 /* reset the hardware with the new settings */
6374 e1000e_reset(adapter);
6377 * If the controller has AMT, do not set DRV_LOAD until the interface
6378 * is up. For all other cases, let the f/w know that the h/w is now
6379 * under the control of the driver.
6381 if (!(adapter->flags & FLAG_HAS_AMT))
6382 e1000e_get_hw_control(adapter);
6384 strlcpy(netdev->name, "eth%d", sizeof(netdev->name));
6385 err = register_netdev(netdev);
6389 /* carrier off reporting is important to ethtool even BEFORE open */
6390 netif_carrier_off(netdev);
6392 e1000_print_device_info(adapter);
6394 if (pci_dev_run_wake(pdev))
6395 pm_runtime_put_noidle(&pdev->dev);
6400 if (!(adapter->flags & FLAG_HAS_AMT))
6401 e1000e_release_hw_control(adapter);
6403 if (hw->phy.ops.check_reset_block && !hw->phy.ops.check_reset_block(hw))
6404 e1000_phy_hw_reset(&adapter->hw);
6406 kfree(adapter->tx_ring);
6407 kfree(adapter->rx_ring);
6409 if (adapter->hw.flash_address)
6410 iounmap(adapter->hw.flash_address);
6411 e1000e_reset_interrupt_capability(adapter);
6413 iounmap(adapter->hw.hw_addr);
6415 free_netdev(netdev);
6417 pci_release_selected_regions(pdev,
6418 pci_select_bars(pdev, IORESOURCE_MEM));
6421 pci_disable_device(pdev);
6426 * e1000_remove - Device Removal Routine
6427 * @pdev: PCI device information struct
6429 * e1000_remove is called by the PCI subsystem to alert the driver
6430 * that it should release a PCI device. The could be caused by a
6431 * Hot-Plug event, or because the driver is going to be removed from
6434 static void __devexit e1000_remove(struct pci_dev *pdev)
6436 struct net_device *netdev = pci_get_drvdata(pdev);
6437 struct e1000_adapter *adapter = netdev_priv(netdev);
6438 bool down = test_bit(__E1000_DOWN, &adapter->state);
6441 * The timers may be rescheduled, so explicitly disable them
6442 * from being rescheduled.
6445 set_bit(__E1000_DOWN, &adapter->state);
6446 del_timer_sync(&adapter->watchdog_timer);
6447 del_timer_sync(&adapter->phy_info_timer);
6449 cancel_work_sync(&adapter->reset_task);
6450 cancel_work_sync(&adapter->watchdog_task);
6451 cancel_work_sync(&adapter->downshift_task);
6452 cancel_work_sync(&adapter->update_phy_task);
6453 cancel_work_sync(&adapter->print_hang_task);
6455 if (!(netdev->flags & IFF_UP))
6456 e1000_power_down_phy(adapter);
6458 /* Don't lie to e1000_close() down the road. */
6460 clear_bit(__E1000_DOWN, &adapter->state);
6461 unregister_netdev(netdev);
6463 if (pci_dev_run_wake(pdev))
6464 pm_runtime_get_noresume(&pdev->dev);
6467 * Release control of h/w to f/w. If f/w is AMT enabled, this
6468 * would have already happened in close and is redundant.
6470 e1000e_release_hw_control(adapter);
6472 e1000e_reset_interrupt_capability(adapter);
6473 kfree(adapter->tx_ring);
6474 kfree(adapter->rx_ring);
6476 iounmap(adapter->hw.hw_addr);
6477 if (adapter->hw.flash_address)
6478 iounmap(adapter->hw.flash_address);
6479 pci_release_selected_regions(pdev,
6480 pci_select_bars(pdev, IORESOURCE_MEM));
6482 free_netdev(netdev);
6485 pci_disable_pcie_error_reporting(pdev);
6487 pci_disable_device(pdev);
6490 /* PCI Error Recovery (ERS) */
6491 static struct pci_error_handlers e1000_err_handler = {
6492 .error_detected = e1000_io_error_detected,
6493 .slot_reset = e1000_io_slot_reset,
6494 .resume = e1000_io_resume,
6497 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = {
6498 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 },
6499 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 },
6500 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 },
6501 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 },
6502 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 },
6503 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 },
6504 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 },
6505 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 },
6506 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 },
6508 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 },
6509 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 },
6510 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 },
6511 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 },
6513 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 },
6514 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 },
6515 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 },
6517 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 },
6518 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 },
6519 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 },
6521 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT),
6522 board_80003es2lan },
6523 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT),
6524 board_80003es2lan },
6525 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT),
6526 board_80003es2lan },
6527 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT),
6528 board_80003es2lan },
6530 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan },
6531 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan },
6532 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan },
6533 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan },
6534 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan },
6535 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan },
6536 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan },
6537 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan },
6539 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan },
6540 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan },
6541 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan },
6542 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan },
6543 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan },
6544 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan },
6545 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan },
6546 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan },
6547 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan },
6549 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan },
6550 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan },
6551 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan },
6553 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan },
6554 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan },
6555 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan },
6557 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan },
6558 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan },
6559 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan },
6560 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan },
6562 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan },
6563 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan },
6565 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_LM), board_pch_lpt },
6566 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_V), board_pch_lpt },
6568 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */
6570 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
6573 static const struct dev_pm_ops e1000_pm_ops = {
6574 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume)
6575 SET_RUNTIME_PM_OPS(e1000_runtime_suspend,
6576 e1000_runtime_resume, e1000_idle)
6580 /* PCI Device API Driver */
6581 static struct pci_driver e1000_driver = {
6582 .name = e1000e_driver_name,
6583 .id_table = e1000_pci_tbl,
6584 .probe = e1000_probe,
6585 .remove = __devexit_p(e1000_remove),
6588 .pm = &e1000_pm_ops,
6591 .shutdown = e1000_shutdown,
6592 .err_handler = &e1000_err_handler
6596 * e1000_init_module - Driver Registration Routine
6598 * e1000_init_module is the first routine called when the driver is
6599 * loaded. All it does is register with the PCI subsystem.
6601 static int __init e1000_init_module(void)
6604 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
6605 e1000e_driver_version);
6606 pr_info("Copyright(c) 1999 - 2012 Intel Corporation.\n");
6607 ret = pci_register_driver(&e1000_driver);
6611 module_init(e1000_init_module);
6614 * e1000_exit_module - Driver Exit Cleanup Routine
6616 * e1000_exit_module is called just before the driver is removed
6619 static void __exit e1000_exit_module(void)
6621 pci_unregister_driver(&e1000_driver);
6623 module_exit(e1000_exit_module);
6626 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
6627 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
6628 MODULE_LICENSE("GPL");
6629 MODULE_VERSION(DRV_VERSION);