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 "1.9.5" 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,
84 struct e1000_reg_info {
89 #define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */
90 #define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */
91 #define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */
92 #define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */
93 #define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */
95 #define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */
96 #define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */
97 #define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */
98 #define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */
99 #define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */
101 static const struct e1000_reg_info e1000_reg_info_tbl[] = {
103 /* General Registers */
104 {E1000_CTRL, "CTRL"},
105 {E1000_STATUS, "STATUS"},
106 {E1000_CTRL_EXT, "CTRL_EXT"},
108 /* Interrupt Registers */
112 {E1000_RCTL, "RCTL"},
113 {E1000_RDLEN, "RDLEN"},
116 {E1000_RDTR, "RDTR"},
117 {E1000_RXDCTL(0), "RXDCTL"},
119 {E1000_RDBAL, "RDBAL"},
120 {E1000_RDBAH, "RDBAH"},
121 {E1000_RDFH, "RDFH"},
122 {E1000_RDFT, "RDFT"},
123 {E1000_RDFHS, "RDFHS"},
124 {E1000_RDFTS, "RDFTS"},
125 {E1000_RDFPC, "RDFPC"},
128 {E1000_TCTL, "TCTL"},
129 {E1000_TDBAL, "TDBAL"},
130 {E1000_TDBAH, "TDBAH"},
131 {E1000_TDLEN, "TDLEN"},
134 {E1000_TIDV, "TIDV"},
135 {E1000_TXDCTL(0), "TXDCTL"},
136 {E1000_TADV, "TADV"},
137 {E1000_TARC(0), "TARC"},
138 {E1000_TDFH, "TDFH"},
139 {E1000_TDFT, "TDFT"},
140 {E1000_TDFHS, "TDFHS"},
141 {E1000_TDFTS, "TDFTS"},
142 {E1000_TDFPC, "TDFPC"},
144 /* List Terminator */
149 * e1000_regdump - register printout routine
151 static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo)
157 switch (reginfo->ofs) {
158 case E1000_RXDCTL(0):
159 for (n = 0; n < 2; n++)
160 regs[n] = __er32(hw, E1000_RXDCTL(n));
162 case E1000_TXDCTL(0):
163 for (n = 0; n < 2; n++)
164 regs[n] = __er32(hw, E1000_TXDCTL(n));
167 for (n = 0; n < 2; n++)
168 regs[n] = __er32(hw, E1000_TARC(n));
171 pr_info("%-15s %08x\n",
172 reginfo->name, __er32(hw, reginfo->ofs));
176 snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]");
177 pr_info("%-15s %08x %08x\n", rname, regs[0], regs[1]);
181 * e1000e_dump - Print registers, Tx-ring and Rx-ring
183 static void e1000e_dump(struct e1000_adapter *adapter)
185 struct net_device *netdev = adapter->netdev;
186 struct e1000_hw *hw = &adapter->hw;
187 struct e1000_reg_info *reginfo;
188 struct e1000_ring *tx_ring = adapter->tx_ring;
189 struct e1000_tx_desc *tx_desc;
194 struct e1000_buffer *buffer_info;
195 struct e1000_ring *rx_ring = adapter->rx_ring;
196 union e1000_rx_desc_packet_split *rx_desc_ps;
197 union e1000_rx_desc_extended *rx_desc;
207 if (!netif_msg_hw(adapter))
210 /* Print netdevice Info */
212 dev_info(&adapter->pdev->dev, "Net device Info\n");
213 pr_info("Device Name state trans_start last_rx\n");
214 pr_info("%-15s %016lX %016lX %016lX\n",
215 netdev->name, netdev->state, netdev->trans_start,
219 /* Print Registers */
220 dev_info(&adapter->pdev->dev, "Register Dump\n");
221 pr_info(" Register Name Value\n");
222 for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl;
223 reginfo->name; reginfo++) {
224 e1000_regdump(hw, reginfo);
227 /* Print Tx Ring Summary */
228 if (!netdev || !netif_running(netdev))
231 dev_info(&adapter->pdev->dev, "Tx Ring Summary\n");
232 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
233 buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean];
234 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n",
235 0, tx_ring->next_to_use, tx_ring->next_to_clean,
236 (unsigned long long)buffer_info->dma,
238 buffer_info->next_to_watch,
239 (unsigned long long)buffer_info->time_stamp);
242 if (!netif_msg_tx_done(adapter))
243 goto rx_ring_summary;
245 dev_info(&adapter->pdev->dev, "Tx Ring Dump\n");
247 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
249 * Legacy Transmit Descriptor
250 * +--------------------------------------------------------------+
251 * 0 | Buffer Address [63:0] (Reserved on Write Back) |
252 * +--------------------------------------------------------------+
253 * 8 | Special | CSS | Status | CMD | CSO | Length |
254 * +--------------------------------------------------------------+
255 * 63 48 47 36 35 32 31 24 23 16 15 0
257 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
258 * 63 48 47 40 39 32 31 16 15 8 7 0
259 * +----------------------------------------------------------------+
260 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
261 * +----------------------------------------------------------------+
262 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
263 * +----------------------------------------------------------------+
264 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
266 * Extended Data Descriptor (DTYP=0x1)
267 * +----------------------------------------------------------------+
268 * 0 | Buffer Address [63:0] |
269 * +----------------------------------------------------------------+
270 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
271 * +----------------------------------------------------------------+
272 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
274 pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n");
275 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n");
276 pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Data format\n");
277 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
278 const char *next_desc;
279 tx_desc = E1000_TX_DESC(*tx_ring, i);
280 buffer_info = &tx_ring->buffer_info[i];
281 u0 = (struct my_u0 *)tx_desc;
282 if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean)
283 next_desc = " NTC/U";
284 else if (i == tx_ring->next_to_use)
286 else if (i == tx_ring->next_to_clean)
290 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n",
291 (!(le64_to_cpu(u0->b) & (1 << 29)) ? 'l' :
292 ((le64_to_cpu(u0->b) & (1 << 20)) ? 'd' : 'c')),
294 (unsigned long long)le64_to_cpu(u0->a),
295 (unsigned long long)le64_to_cpu(u0->b),
296 (unsigned long long)buffer_info->dma,
297 buffer_info->length, buffer_info->next_to_watch,
298 (unsigned long long)buffer_info->time_stamp,
299 buffer_info->skb, next_desc);
301 if (netif_msg_pktdata(adapter) && buffer_info->dma != 0)
302 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS,
303 16, 1, phys_to_virt(buffer_info->dma),
304 buffer_info->length, true);
307 /* Print Rx Ring Summary */
309 dev_info(&adapter->pdev->dev, "Rx Ring Summary\n");
310 pr_info("Queue [NTU] [NTC]\n");
311 pr_info(" %5d %5X %5X\n",
312 0, rx_ring->next_to_use, rx_ring->next_to_clean);
315 if (!netif_msg_rx_status(adapter))
318 dev_info(&adapter->pdev->dev, "Rx Ring Dump\n");
319 switch (adapter->rx_ps_pages) {
323 /* [Extended] Packet Split Receive Descriptor Format
325 * +-----------------------------------------------------+
326 * 0 | Buffer Address 0 [63:0] |
327 * +-----------------------------------------------------+
328 * 8 | Buffer Address 1 [63:0] |
329 * +-----------------------------------------------------+
330 * 16 | Buffer Address 2 [63:0] |
331 * +-----------------------------------------------------+
332 * 24 | Buffer Address 3 [63:0] |
333 * +-----------------------------------------------------+
335 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");
336 /* [Extended] Receive Descriptor (Write-Back) Format
338 * 63 48 47 32 31 13 12 8 7 4 3 0
339 * +------------------------------------------------------+
340 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
341 * | Checksum | Ident | | Queue | | Type |
342 * +------------------------------------------------------+
343 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
344 * +------------------------------------------------------+
345 * 63 48 47 32 31 20 19 0
347 pr_info("RWB[desc] [ck ipid mrqhsh] [vl l0 ee es] [ l3 l2 l1 hs] [reserved ] ---------------- [bi->skb] <-- Ext Rx Write-Back format\n");
348 for (i = 0; i < rx_ring->count; i++) {
349 const char *next_desc;
350 buffer_info = &rx_ring->buffer_info[i];
351 rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i);
352 u1 = (struct my_u1 *)rx_desc_ps;
354 le32_to_cpu(rx_desc_ps->wb.middle.status_error);
356 if (i == rx_ring->next_to_use)
358 else if (i == rx_ring->next_to_clean)
363 if (staterr & E1000_RXD_STAT_DD) {
364 /* Descriptor Done */
365 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n",
367 (unsigned long long)le64_to_cpu(u1->a),
368 (unsigned long long)le64_to_cpu(u1->b),
369 (unsigned long long)le64_to_cpu(u1->c),
370 (unsigned long long)le64_to_cpu(u1->d),
371 buffer_info->skb, next_desc);
373 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n",
375 (unsigned long long)le64_to_cpu(u1->a),
376 (unsigned long long)le64_to_cpu(u1->b),
377 (unsigned long long)le64_to_cpu(u1->c),
378 (unsigned long long)le64_to_cpu(u1->d),
379 (unsigned long long)buffer_info->dma,
380 buffer_info->skb, next_desc);
382 if (netif_msg_pktdata(adapter))
383 print_hex_dump(KERN_INFO, "",
384 DUMP_PREFIX_ADDRESS, 16, 1,
385 phys_to_virt(buffer_info->dma),
386 adapter->rx_ps_bsize0, true);
392 /* Extended Receive Descriptor (Read) Format
394 * +-----------------------------------------------------+
395 * 0 | Buffer Address [63:0] |
396 * +-----------------------------------------------------+
398 * +-----------------------------------------------------+
400 pr_info("R [desc] [buf addr 63:0 ] [reserved 63:0 ] [bi->dma ] [bi->skb] <-- Ext (Read) format\n");
401 /* Extended Receive Descriptor (Write-Back) Format
403 * 63 48 47 32 31 24 23 4 3 0
404 * +------------------------------------------------------+
406 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS |
407 * | Packet | IP | | | Type |
408 * | Checksum | Ident | | | |
409 * +------------------------------------------------------+
410 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
411 * +------------------------------------------------------+
412 * 63 48 47 32 31 20 19 0
414 pr_info("RWB[desc] [cs ipid mrq] [vt ln xe xs] [bi->skb] <-- Ext (Write-Back) format\n");
416 for (i = 0; i < rx_ring->count; i++) {
417 const char *next_desc;
419 buffer_info = &rx_ring->buffer_info[i];
420 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
421 u1 = (struct my_u1 *)rx_desc;
422 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
424 if (i == rx_ring->next_to_use)
426 else if (i == rx_ring->next_to_clean)
431 if (staterr & E1000_RXD_STAT_DD) {
432 /* Descriptor Done */
433 pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n",
435 (unsigned long long)le64_to_cpu(u1->a),
436 (unsigned long long)le64_to_cpu(u1->b),
437 buffer_info->skb, next_desc);
439 pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n",
441 (unsigned long long)le64_to_cpu(u1->a),
442 (unsigned long long)le64_to_cpu(u1->b),
443 (unsigned long long)buffer_info->dma,
444 buffer_info->skb, next_desc);
446 if (netif_msg_pktdata(adapter))
447 print_hex_dump(KERN_INFO, "",
448 DUMP_PREFIX_ADDRESS, 16,
452 adapter->rx_buffer_len,
460 * e1000_desc_unused - calculate if we have unused descriptors
462 static int e1000_desc_unused(struct e1000_ring *ring)
464 if (ring->next_to_clean > ring->next_to_use)
465 return ring->next_to_clean - ring->next_to_use - 1;
467 return ring->count + ring->next_to_clean - ring->next_to_use - 1;
471 * e1000_receive_skb - helper function to handle Rx indications
472 * @adapter: board private structure
473 * @status: descriptor status field as written by hardware
474 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
475 * @skb: pointer to sk_buff to be indicated to stack
477 static void e1000_receive_skb(struct e1000_adapter *adapter,
478 struct net_device *netdev, struct sk_buff *skb,
479 u8 status, __le16 vlan)
481 u16 tag = le16_to_cpu(vlan);
482 skb->protocol = eth_type_trans(skb, netdev);
484 if (status & E1000_RXD_STAT_VP)
485 __vlan_hwaccel_put_tag(skb, tag);
487 napi_gro_receive(&adapter->napi, skb);
491 * e1000_rx_checksum - Receive Checksum Offload
492 * @adapter: board private structure
493 * @status_err: receive descriptor status and error fields
494 * @csum: receive descriptor csum field
495 * @sk_buff: socket buffer with received data
497 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
498 __le16 csum, struct sk_buff *skb)
500 u16 status = (u16)status_err;
501 u8 errors = (u8)(status_err >> 24);
503 skb_checksum_none_assert(skb);
505 /* Rx checksum disabled */
506 if (!(adapter->netdev->features & NETIF_F_RXCSUM))
509 /* Ignore Checksum bit is set */
510 if (status & E1000_RXD_STAT_IXSM)
513 /* TCP/UDP checksum error bit is set */
514 if (errors & E1000_RXD_ERR_TCPE) {
515 /* let the stack verify checksum errors */
516 adapter->hw_csum_err++;
520 /* TCP/UDP Checksum has not been calculated */
521 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
524 /* It must be a TCP or UDP packet with a valid checksum */
525 if (status & E1000_RXD_STAT_TCPCS) {
526 /* TCP checksum is good */
527 skb->ip_summed = CHECKSUM_UNNECESSARY;
530 * IP fragment with UDP payload
531 * Hardware complements the payload checksum, so we undo it
532 * and then put the value in host order for further stack use.
534 __sum16 sum = (__force __sum16)swab16((__force u16)csum);
535 skb->csum = csum_unfold(~sum);
536 skb->ip_summed = CHECKSUM_COMPLETE;
538 adapter->hw_csum_good++;
542 * e1000e_update_tail_wa - helper function for e1000e_update_[rt]dt_wa()
543 * @hw: pointer to the HW structure
544 * @tail: address of tail descriptor register
545 * @i: value to write to tail descriptor register
547 * When updating the tail register, the ME could be accessing Host CSR
548 * registers at the same time. Normally, this is handled in h/w by an
549 * arbiter but on some parts there is a bug that acknowledges Host accesses
550 * later than it should which could result in the descriptor register to
551 * have an incorrect value. Workaround this by checking the FWSM register
552 * which has bit 24 set while ME is accessing Host CSR registers, wait
553 * if it is set and try again a number of times.
555 static inline s32 e1000e_update_tail_wa(struct e1000_hw *hw, void __iomem *tail,
560 while ((j++ < E1000_ICH_FWSM_PCIM2PCI_COUNT) &&
561 (er32(FWSM) & E1000_ICH_FWSM_PCIM2PCI))
566 if ((j == E1000_ICH_FWSM_PCIM2PCI_COUNT) && (i != readl(tail)))
567 return E1000_ERR_SWFW_SYNC;
572 static void e1000e_update_rdt_wa(struct e1000_ring *rx_ring, unsigned int i)
574 struct e1000_adapter *adapter = rx_ring->adapter;
575 struct e1000_hw *hw = &adapter->hw;
577 if (e1000e_update_tail_wa(hw, rx_ring->tail, i)) {
578 u32 rctl = er32(RCTL);
579 ew32(RCTL, rctl & ~E1000_RCTL_EN);
580 e_err("ME firmware caused invalid RDT - resetting\n");
581 schedule_work(&adapter->reset_task);
585 static void e1000e_update_tdt_wa(struct e1000_ring *tx_ring, unsigned int i)
587 struct e1000_adapter *adapter = tx_ring->adapter;
588 struct e1000_hw *hw = &adapter->hw;
590 if (e1000e_update_tail_wa(hw, tx_ring->tail, i)) {
591 u32 tctl = er32(TCTL);
592 ew32(TCTL, tctl & ~E1000_TCTL_EN);
593 e_err("ME firmware caused invalid TDT - resetting\n");
594 schedule_work(&adapter->reset_task);
599 * e1000_alloc_rx_buffers - Replace used receive buffers
600 * @rx_ring: Rx descriptor ring
602 static void e1000_alloc_rx_buffers(struct e1000_ring *rx_ring,
603 int cleaned_count, gfp_t gfp)
605 struct e1000_adapter *adapter = rx_ring->adapter;
606 struct net_device *netdev = adapter->netdev;
607 struct pci_dev *pdev = adapter->pdev;
608 union e1000_rx_desc_extended *rx_desc;
609 struct e1000_buffer *buffer_info;
612 unsigned int bufsz = adapter->rx_buffer_len;
614 i = rx_ring->next_to_use;
615 buffer_info = &rx_ring->buffer_info[i];
617 while (cleaned_count--) {
618 skb = buffer_info->skb;
624 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp);
626 /* Better luck next round */
627 adapter->alloc_rx_buff_failed++;
631 buffer_info->skb = skb;
633 buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
634 adapter->rx_buffer_len,
636 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
637 dev_err(&pdev->dev, "Rx DMA map failed\n");
638 adapter->rx_dma_failed++;
642 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
643 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
645 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
647 * Force memory writes to complete before letting h/w
648 * know there are new descriptors to fetch. (Only
649 * applicable for weak-ordered memory model archs,
653 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
654 e1000e_update_rdt_wa(rx_ring, i);
656 writel(i, rx_ring->tail);
659 if (i == rx_ring->count)
661 buffer_info = &rx_ring->buffer_info[i];
664 rx_ring->next_to_use = i;
668 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
669 * @rx_ring: Rx descriptor ring
671 static void e1000_alloc_rx_buffers_ps(struct e1000_ring *rx_ring,
672 int cleaned_count, gfp_t gfp)
674 struct e1000_adapter *adapter = rx_ring->adapter;
675 struct net_device *netdev = adapter->netdev;
676 struct pci_dev *pdev = adapter->pdev;
677 union e1000_rx_desc_packet_split *rx_desc;
678 struct e1000_buffer *buffer_info;
679 struct e1000_ps_page *ps_page;
683 i = rx_ring->next_to_use;
684 buffer_info = &rx_ring->buffer_info[i];
686 while (cleaned_count--) {
687 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
689 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
690 ps_page = &buffer_info->ps_pages[j];
691 if (j >= adapter->rx_ps_pages) {
692 /* all unused desc entries get hw null ptr */
693 rx_desc->read.buffer_addr[j + 1] =
697 if (!ps_page->page) {
698 ps_page->page = alloc_page(gfp);
699 if (!ps_page->page) {
700 adapter->alloc_rx_buff_failed++;
703 ps_page->dma = dma_map_page(&pdev->dev,
707 if (dma_mapping_error(&pdev->dev,
709 dev_err(&adapter->pdev->dev,
710 "Rx DMA page map failed\n");
711 adapter->rx_dma_failed++;
716 * Refresh the desc even if buffer_addrs
717 * didn't change because each write-back
720 rx_desc->read.buffer_addr[j + 1] =
721 cpu_to_le64(ps_page->dma);
724 skb = __netdev_alloc_skb_ip_align(netdev,
725 adapter->rx_ps_bsize0,
729 adapter->alloc_rx_buff_failed++;
733 buffer_info->skb = skb;
734 buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
735 adapter->rx_ps_bsize0,
737 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
738 dev_err(&pdev->dev, "Rx DMA map failed\n");
739 adapter->rx_dma_failed++;
741 dev_kfree_skb_any(skb);
742 buffer_info->skb = NULL;
746 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
748 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
750 * Force memory writes to complete before letting h/w
751 * know there are new descriptors to fetch. (Only
752 * applicable for weak-ordered memory model archs,
756 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
757 e1000e_update_rdt_wa(rx_ring, i << 1);
759 writel(i << 1, rx_ring->tail);
763 if (i == rx_ring->count)
765 buffer_info = &rx_ring->buffer_info[i];
769 rx_ring->next_to_use = i;
773 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
774 * @rx_ring: Rx descriptor ring
775 * @cleaned_count: number of buffers to allocate this pass
778 static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring *rx_ring,
779 int cleaned_count, gfp_t gfp)
781 struct e1000_adapter *adapter = rx_ring->adapter;
782 struct net_device *netdev = adapter->netdev;
783 struct pci_dev *pdev = adapter->pdev;
784 union e1000_rx_desc_extended *rx_desc;
785 struct e1000_buffer *buffer_info;
788 unsigned int bufsz = 256 - 16 /* for skb_reserve */;
790 i = rx_ring->next_to_use;
791 buffer_info = &rx_ring->buffer_info[i];
793 while (cleaned_count--) {
794 skb = buffer_info->skb;
800 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp);
801 if (unlikely(!skb)) {
802 /* Better luck next round */
803 adapter->alloc_rx_buff_failed++;
807 buffer_info->skb = skb;
809 /* allocate a new page if necessary */
810 if (!buffer_info->page) {
811 buffer_info->page = alloc_page(gfp);
812 if (unlikely(!buffer_info->page)) {
813 adapter->alloc_rx_buff_failed++;
818 if (!buffer_info->dma)
819 buffer_info->dma = dma_map_page(&pdev->dev,
820 buffer_info->page, 0,
824 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
825 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
827 if (unlikely(++i == rx_ring->count))
829 buffer_info = &rx_ring->buffer_info[i];
832 if (likely(rx_ring->next_to_use != i)) {
833 rx_ring->next_to_use = i;
834 if (unlikely(i-- == 0))
835 i = (rx_ring->count - 1);
837 /* Force memory writes to complete before letting h/w
838 * know there are new descriptors to fetch. (Only
839 * applicable for weak-ordered memory model archs,
842 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
843 e1000e_update_rdt_wa(rx_ring, i);
845 writel(i, rx_ring->tail);
849 static inline void e1000_rx_hash(struct net_device *netdev, __le32 rss,
852 if (netdev->features & NETIF_F_RXHASH)
853 skb->rxhash = le32_to_cpu(rss);
857 * e1000_clean_rx_irq - Send received data up the network stack
858 * @rx_ring: Rx descriptor ring
860 * the return value indicates whether actual cleaning was done, there
861 * is no guarantee that everything was cleaned
863 static bool e1000_clean_rx_irq(struct e1000_ring *rx_ring, int *work_done,
866 struct e1000_adapter *adapter = rx_ring->adapter;
867 struct net_device *netdev = adapter->netdev;
868 struct pci_dev *pdev = adapter->pdev;
869 struct e1000_hw *hw = &adapter->hw;
870 union e1000_rx_desc_extended *rx_desc, *next_rxd;
871 struct e1000_buffer *buffer_info, *next_buffer;
874 int cleaned_count = 0;
875 bool cleaned = false;
876 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
878 i = rx_ring->next_to_clean;
879 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
880 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
881 buffer_info = &rx_ring->buffer_info[i];
883 while (staterr & E1000_RXD_STAT_DD) {
886 if (*work_done >= work_to_do)
889 rmb(); /* read descriptor and rx_buffer_info after status DD */
891 skb = buffer_info->skb;
892 buffer_info->skb = NULL;
894 prefetch(skb->data - NET_IP_ALIGN);
897 if (i == rx_ring->count)
899 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i);
902 next_buffer = &rx_ring->buffer_info[i];
906 dma_unmap_single(&pdev->dev,
908 adapter->rx_buffer_len,
910 buffer_info->dma = 0;
912 length = le16_to_cpu(rx_desc->wb.upper.length);
915 * !EOP means multiple descriptors were used to store a single
916 * packet, if that's the case we need to toss it. In fact, we
917 * need to toss every packet with the EOP bit clear and the
918 * next frame that _does_ have the EOP bit set, as it is by
919 * definition only a frame fragment
921 if (unlikely(!(staterr & E1000_RXD_STAT_EOP)))
922 adapter->flags2 |= FLAG2_IS_DISCARDING;
924 if (adapter->flags2 & FLAG2_IS_DISCARDING) {
925 /* All receives must fit into a single buffer */
926 e_dbg("Receive packet consumed multiple buffers\n");
928 buffer_info->skb = skb;
929 if (staterr & E1000_RXD_STAT_EOP)
930 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
934 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
935 !(netdev->features & NETIF_F_RXALL))) {
937 buffer_info->skb = skb;
941 /* adjust length to remove Ethernet CRC */
942 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
943 /* If configured to store CRC, don't subtract FCS,
944 * but keep the FCS bytes out of the total_rx_bytes
947 if (netdev->features & NETIF_F_RXFCS)
953 total_rx_bytes += length;
957 * code added for copybreak, this should improve
958 * performance for small packets with large amounts
959 * of reassembly being done in the stack
961 if (length < copybreak) {
962 struct sk_buff *new_skb =
963 netdev_alloc_skb_ip_align(netdev, length);
965 skb_copy_to_linear_data_offset(new_skb,
971 /* save the skb in buffer_info as good */
972 buffer_info->skb = skb;
975 /* else just continue with the old one */
977 /* end copybreak code */
978 skb_put(skb, length);
980 /* Receive Checksum Offload */
981 e1000_rx_checksum(adapter, staterr,
982 rx_desc->wb.lower.hi_dword.csum_ip.csum, skb);
984 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
986 e1000_receive_skb(adapter, netdev, skb, staterr,
987 rx_desc->wb.upper.vlan);
990 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
992 /* return some buffers to hardware, one at a time is too slow */
993 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
994 adapter->alloc_rx_buf(rx_ring, cleaned_count,
999 /* use prefetched values */
1001 buffer_info = next_buffer;
1003 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
1005 rx_ring->next_to_clean = i;
1007 cleaned_count = e1000_desc_unused(rx_ring);
1009 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
1011 adapter->total_rx_bytes += total_rx_bytes;
1012 adapter->total_rx_packets += total_rx_packets;
1016 static void e1000_put_txbuf(struct e1000_ring *tx_ring,
1017 struct e1000_buffer *buffer_info)
1019 struct e1000_adapter *adapter = tx_ring->adapter;
1021 if (buffer_info->dma) {
1022 if (buffer_info->mapped_as_page)
1023 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma,
1024 buffer_info->length, DMA_TO_DEVICE);
1026 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma,
1027 buffer_info->length, DMA_TO_DEVICE);
1028 buffer_info->dma = 0;
1030 if (buffer_info->skb) {
1031 dev_kfree_skb_any(buffer_info->skb);
1032 buffer_info->skb = NULL;
1034 buffer_info->time_stamp = 0;
1037 static void e1000_print_hw_hang(struct work_struct *work)
1039 struct e1000_adapter *adapter = container_of(work,
1040 struct e1000_adapter,
1042 struct net_device *netdev = adapter->netdev;
1043 struct e1000_ring *tx_ring = adapter->tx_ring;
1044 unsigned int i = tx_ring->next_to_clean;
1045 unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
1046 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop);
1047 struct e1000_hw *hw = &adapter->hw;
1048 u16 phy_status, phy_1000t_status, phy_ext_status;
1051 if (test_bit(__E1000_DOWN, &adapter->state))
1054 if (!adapter->tx_hang_recheck &&
1055 (adapter->flags2 & FLAG2_DMA_BURST)) {
1056 /* May be block on write-back, flush and detect again
1057 * flush pending descriptor writebacks to memory
1059 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
1060 /* execute the writes immediately */
1063 * Due to rare timing issues, write to TIDV again to ensure
1064 * the write is successful
1066 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
1067 /* execute the writes immediately */
1069 adapter->tx_hang_recheck = true;
1072 /* Real hang detected */
1073 adapter->tx_hang_recheck = false;
1074 netif_stop_queue(netdev);
1076 e1e_rphy(hw, PHY_STATUS, &phy_status);
1077 e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status);
1078 e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status);
1080 pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status);
1082 /* detected Hardware unit hang */
1083 e_err("Detected Hardware Unit Hang:\n"
1086 " next_to_use <%x>\n"
1087 " next_to_clean <%x>\n"
1088 "buffer_info[next_to_clean]:\n"
1089 " time_stamp <%lx>\n"
1090 " next_to_watch <%x>\n"
1092 " next_to_watch.status <%x>\n"
1095 "PHY 1000BASE-T Status <%x>\n"
1096 "PHY Extended Status <%x>\n"
1097 "PCI Status <%x>\n",
1098 readl(tx_ring->head),
1099 readl(tx_ring->tail),
1100 tx_ring->next_to_use,
1101 tx_ring->next_to_clean,
1102 tx_ring->buffer_info[eop].time_stamp,
1105 eop_desc->upper.fields.status,
1114 * e1000_clean_tx_irq - Reclaim resources after transmit completes
1115 * @tx_ring: Tx descriptor ring
1117 * the return value indicates whether actual cleaning was done, there
1118 * is no guarantee that everything was cleaned
1120 static bool e1000_clean_tx_irq(struct e1000_ring *tx_ring)
1122 struct e1000_adapter *adapter = tx_ring->adapter;
1123 struct net_device *netdev = adapter->netdev;
1124 struct e1000_hw *hw = &adapter->hw;
1125 struct e1000_tx_desc *tx_desc, *eop_desc;
1126 struct e1000_buffer *buffer_info;
1127 unsigned int i, eop;
1128 unsigned int count = 0;
1129 unsigned int total_tx_bytes = 0, total_tx_packets = 0;
1130 unsigned int bytes_compl = 0, pkts_compl = 0;
1132 i = tx_ring->next_to_clean;
1133 eop = tx_ring->buffer_info[i].next_to_watch;
1134 eop_desc = E1000_TX_DESC(*tx_ring, eop);
1136 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
1137 (count < tx_ring->count)) {
1138 bool cleaned = false;
1139 rmb(); /* read buffer_info after eop_desc */
1140 for (; !cleaned; count++) {
1141 tx_desc = E1000_TX_DESC(*tx_ring, i);
1142 buffer_info = &tx_ring->buffer_info[i];
1143 cleaned = (i == eop);
1146 total_tx_packets += buffer_info->segs;
1147 total_tx_bytes += buffer_info->bytecount;
1148 if (buffer_info->skb) {
1149 bytes_compl += buffer_info->skb->len;
1154 e1000_put_txbuf(tx_ring, buffer_info);
1155 tx_desc->upper.data = 0;
1158 if (i == tx_ring->count)
1162 if (i == tx_ring->next_to_use)
1164 eop = tx_ring->buffer_info[i].next_to_watch;
1165 eop_desc = E1000_TX_DESC(*tx_ring, eop);
1168 tx_ring->next_to_clean = i;
1170 netdev_completed_queue(netdev, pkts_compl, bytes_compl);
1172 #define TX_WAKE_THRESHOLD 32
1173 if (count && netif_carrier_ok(netdev) &&
1174 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
1175 /* Make sure that anybody stopping the queue after this
1176 * sees the new next_to_clean.
1180 if (netif_queue_stopped(netdev) &&
1181 !(test_bit(__E1000_DOWN, &adapter->state))) {
1182 netif_wake_queue(netdev);
1183 ++adapter->restart_queue;
1187 if (adapter->detect_tx_hung) {
1189 * Detect a transmit hang in hardware, this serializes the
1190 * check with the clearing of time_stamp and movement of i
1192 adapter->detect_tx_hung = false;
1193 if (tx_ring->buffer_info[i].time_stamp &&
1194 time_after(jiffies, tx_ring->buffer_info[i].time_stamp
1195 + (adapter->tx_timeout_factor * HZ)) &&
1196 !(er32(STATUS) & E1000_STATUS_TXOFF))
1197 schedule_work(&adapter->print_hang_task);
1199 adapter->tx_hang_recheck = false;
1201 adapter->total_tx_bytes += total_tx_bytes;
1202 adapter->total_tx_packets += total_tx_packets;
1203 return count < tx_ring->count;
1207 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
1208 * @rx_ring: Rx descriptor ring
1210 * the return value indicates whether actual cleaning was done, there
1211 * is no guarantee that everything was cleaned
1213 static bool e1000_clean_rx_irq_ps(struct e1000_ring *rx_ring, int *work_done,
1216 struct e1000_adapter *adapter = rx_ring->adapter;
1217 struct e1000_hw *hw = &adapter->hw;
1218 union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
1219 struct net_device *netdev = adapter->netdev;
1220 struct pci_dev *pdev = adapter->pdev;
1221 struct e1000_buffer *buffer_info, *next_buffer;
1222 struct e1000_ps_page *ps_page;
1223 struct sk_buff *skb;
1225 u32 length, staterr;
1226 int cleaned_count = 0;
1227 bool cleaned = false;
1228 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
1230 i = rx_ring->next_to_clean;
1231 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
1232 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1233 buffer_info = &rx_ring->buffer_info[i];
1235 while (staterr & E1000_RXD_STAT_DD) {
1236 if (*work_done >= work_to_do)
1239 skb = buffer_info->skb;
1240 rmb(); /* read descriptor and rx_buffer_info after status DD */
1242 /* in the packet split case this is header only */
1243 prefetch(skb->data - NET_IP_ALIGN);
1246 if (i == rx_ring->count)
1248 next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
1251 next_buffer = &rx_ring->buffer_info[i];
1255 dma_unmap_single(&pdev->dev, buffer_info->dma,
1256 adapter->rx_ps_bsize0, DMA_FROM_DEVICE);
1257 buffer_info->dma = 0;
1259 /* see !EOP comment in other Rx routine */
1260 if (!(staterr & E1000_RXD_STAT_EOP))
1261 adapter->flags2 |= FLAG2_IS_DISCARDING;
1263 if (adapter->flags2 & FLAG2_IS_DISCARDING) {
1264 e_dbg("Packet Split buffers didn't pick up the full packet\n");
1265 dev_kfree_skb_irq(skb);
1266 if (staterr & E1000_RXD_STAT_EOP)
1267 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
1271 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
1272 !(netdev->features & NETIF_F_RXALL))) {
1273 dev_kfree_skb_irq(skb);
1277 length = le16_to_cpu(rx_desc->wb.middle.length0);
1280 e_dbg("Last part of the packet spanning multiple descriptors\n");
1281 dev_kfree_skb_irq(skb);
1286 skb_put(skb, length);
1290 * this looks ugly, but it seems compiler issues make
1291 * it more efficient than reusing j
1293 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
1296 * page alloc/put takes too long and effects small
1297 * packet throughput, so unsplit small packets and
1298 * save the alloc/put only valid in softirq (napi)
1299 * context to call kmap_*
1301 if (l1 && (l1 <= copybreak) &&
1302 ((length + l1) <= adapter->rx_ps_bsize0)) {
1305 ps_page = &buffer_info->ps_pages[0];
1308 * there is no documentation about how to call
1309 * kmap_atomic, so we can't hold the mapping
1312 dma_sync_single_for_cpu(&pdev->dev,
1316 vaddr = kmap_atomic(ps_page->page);
1317 memcpy(skb_tail_pointer(skb), vaddr, l1);
1318 kunmap_atomic(vaddr);
1319 dma_sync_single_for_device(&pdev->dev,
1324 /* remove the CRC */
1325 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
1326 if (!(netdev->features & NETIF_F_RXFCS))
1335 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
1336 length = le16_to_cpu(rx_desc->wb.upper.length[j]);
1340 ps_page = &buffer_info->ps_pages[j];
1341 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
1344 skb_fill_page_desc(skb, j, ps_page->page, 0, length);
1345 ps_page->page = NULL;
1347 skb->data_len += length;
1348 skb->truesize += PAGE_SIZE;
1351 /* strip the ethernet crc, problem is we're using pages now so
1352 * this whole operation can get a little cpu intensive
1354 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
1355 if (!(netdev->features & NETIF_F_RXFCS))
1356 pskb_trim(skb, skb->len - 4);
1360 total_rx_bytes += skb->len;
1363 e1000_rx_checksum(adapter, staterr,
1364 rx_desc->wb.lower.hi_dword.csum_ip.csum, skb);
1366 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
1368 if (rx_desc->wb.upper.header_status &
1369 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))
1370 adapter->rx_hdr_split++;
1372 e1000_receive_skb(adapter, netdev, skb,
1373 staterr, rx_desc->wb.middle.vlan);
1376 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
1377 buffer_info->skb = NULL;
1379 /* return some buffers to hardware, one at a time is too slow */
1380 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
1381 adapter->alloc_rx_buf(rx_ring, cleaned_count,
1386 /* use prefetched values */
1388 buffer_info = next_buffer;
1390 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1392 rx_ring->next_to_clean = i;
1394 cleaned_count = e1000_desc_unused(rx_ring);
1396 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
1398 adapter->total_rx_bytes += total_rx_bytes;
1399 adapter->total_rx_packets += total_rx_packets;
1404 * e1000_consume_page - helper function
1406 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
1411 skb->data_len += length;
1412 skb->truesize += PAGE_SIZE;
1416 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1417 * @adapter: board private structure
1419 * the return value indicates whether actual cleaning was done, there
1420 * is no guarantee that everything was cleaned
1422 static bool e1000_clean_jumbo_rx_irq(struct e1000_ring *rx_ring, int *work_done,
1425 struct e1000_adapter *adapter = rx_ring->adapter;
1426 struct net_device *netdev = adapter->netdev;
1427 struct pci_dev *pdev = adapter->pdev;
1428 union e1000_rx_desc_extended *rx_desc, *next_rxd;
1429 struct e1000_buffer *buffer_info, *next_buffer;
1430 u32 length, staterr;
1432 int cleaned_count = 0;
1433 bool cleaned = false;
1434 unsigned int total_rx_bytes=0, total_rx_packets=0;
1436 i = rx_ring->next_to_clean;
1437 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
1438 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
1439 buffer_info = &rx_ring->buffer_info[i];
1441 while (staterr & E1000_RXD_STAT_DD) {
1442 struct sk_buff *skb;
1444 if (*work_done >= work_to_do)
1447 rmb(); /* read descriptor and rx_buffer_info after status DD */
1449 skb = buffer_info->skb;
1450 buffer_info->skb = NULL;
1453 if (i == rx_ring->count)
1455 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i);
1458 next_buffer = &rx_ring->buffer_info[i];
1462 dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE,
1464 buffer_info->dma = 0;
1466 length = le16_to_cpu(rx_desc->wb.upper.length);
1468 /* errors is only valid for DD + EOP descriptors */
1469 if (unlikely((staterr & E1000_RXD_STAT_EOP) &&
1470 ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
1471 !(netdev->features & NETIF_F_RXALL)))) {
1472 /* recycle both page and skb */
1473 buffer_info->skb = skb;
1474 /* an error means any chain goes out the window too */
1475 if (rx_ring->rx_skb_top)
1476 dev_kfree_skb_irq(rx_ring->rx_skb_top);
1477 rx_ring->rx_skb_top = NULL;
1481 #define rxtop (rx_ring->rx_skb_top)
1482 if (!(staterr & E1000_RXD_STAT_EOP)) {
1483 /* this descriptor is only the beginning (or middle) */
1485 /* this is the beginning of a chain */
1487 skb_fill_page_desc(rxtop, 0, buffer_info->page,
1490 /* this is the middle of a chain */
1491 skb_fill_page_desc(rxtop,
1492 skb_shinfo(rxtop)->nr_frags,
1493 buffer_info->page, 0, length);
1494 /* re-use the skb, only consumed the page */
1495 buffer_info->skb = skb;
1497 e1000_consume_page(buffer_info, rxtop, length);
1501 /* end of the chain */
1502 skb_fill_page_desc(rxtop,
1503 skb_shinfo(rxtop)->nr_frags,
1504 buffer_info->page, 0, length);
1505 /* re-use the current skb, we only consumed the
1507 buffer_info->skb = skb;
1510 e1000_consume_page(buffer_info, skb, length);
1512 /* no chain, got EOP, this buf is the packet
1513 * copybreak to save the put_page/alloc_page */
1514 if (length <= copybreak &&
1515 skb_tailroom(skb) >= length) {
1517 vaddr = kmap_atomic(buffer_info->page);
1518 memcpy(skb_tail_pointer(skb), vaddr,
1520 kunmap_atomic(vaddr);
1521 /* re-use the page, so don't erase
1522 * buffer_info->page */
1523 skb_put(skb, length);
1525 skb_fill_page_desc(skb, 0,
1526 buffer_info->page, 0,
1528 e1000_consume_page(buffer_info, skb,
1534 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1535 e1000_rx_checksum(adapter, staterr,
1536 rx_desc->wb.lower.hi_dword.csum_ip.csum, skb);
1538 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
1540 /* probably a little skewed due to removing CRC */
1541 total_rx_bytes += skb->len;
1544 /* eth type trans needs skb->data to point to something */
1545 if (!pskb_may_pull(skb, ETH_HLEN)) {
1546 e_err("pskb_may_pull failed.\n");
1547 dev_kfree_skb_irq(skb);
1551 e1000_receive_skb(adapter, netdev, skb, staterr,
1552 rx_desc->wb.upper.vlan);
1555 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
1557 /* return some buffers to hardware, one at a time is too slow */
1558 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
1559 adapter->alloc_rx_buf(rx_ring, cleaned_count,
1564 /* use prefetched values */
1566 buffer_info = next_buffer;
1568 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
1570 rx_ring->next_to_clean = i;
1572 cleaned_count = e1000_desc_unused(rx_ring);
1574 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
1576 adapter->total_rx_bytes += total_rx_bytes;
1577 adapter->total_rx_packets += total_rx_packets;
1582 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1583 * @rx_ring: Rx descriptor ring
1585 static void e1000_clean_rx_ring(struct e1000_ring *rx_ring)
1587 struct e1000_adapter *adapter = rx_ring->adapter;
1588 struct e1000_buffer *buffer_info;
1589 struct e1000_ps_page *ps_page;
1590 struct pci_dev *pdev = adapter->pdev;
1593 /* Free all the Rx ring sk_buffs */
1594 for (i = 0; i < rx_ring->count; i++) {
1595 buffer_info = &rx_ring->buffer_info[i];
1596 if (buffer_info->dma) {
1597 if (adapter->clean_rx == e1000_clean_rx_irq)
1598 dma_unmap_single(&pdev->dev, buffer_info->dma,
1599 adapter->rx_buffer_len,
1601 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq)
1602 dma_unmap_page(&pdev->dev, buffer_info->dma,
1605 else if (adapter->clean_rx == e1000_clean_rx_irq_ps)
1606 dma_unmap_single(&pdev->dev, buffer_info->dma,
1607 adapter->rx_ps_bsize0,
1609 buffer_info->dma = 0;
1612 if (buffer_info->page) {
1613 put_page(buffer_info->page);
1614 buffer_info->page = NULL;
1617 if (buffer_info->skb) {
1618 dev_kfree_skb(buffer_info->skb);
1619 buffer_info->skb = NULL;
1622 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
1623 ps_page = &buffer_info->ps_pages[j];
1626 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
1629 put_page(ps_page->page);
1630 ps_page->page = NULL;
1634 /* there also may be some cached data from a chained receive */
1635 if (rx_ring->rx_skb_top) {
1636 dev_kfree_skb(rx_ring->rx_skb_top);
1637 rx_ring->rx_skb_top = NULL;
1640 /* Zero out the descriptor ring */
1641 memset(rx_ring->desc, 0, rx_ring->size);
1643 rx_ring->next_to_clean = 0;
1644 rx_ring->next_to_use = 0;
1645 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
1647 writel(0, rx_ring->head);
1648 writel(0, rx_ring->tail);
1651 static void e1000e_downshift_workaround(struct work_struct *work)
1653 struct e1000_adapter *adapter = container_of(work,
1654 struct e1000_adapter, downshift_task);
1656 if (test_bit(__E1000_DOWN, &adapter->state))
1659 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw);
1663 * e1000_intr_msi - Interrupt Handler
1664 * @irq: interrupt number
1665 * @data: pointer to a network interface device structure
1667 static irqreturn_t e1000_intr_msi(int irq, void *data)
1669 struct net_device *netdev = data;
1670 struct e1000_adapter *adapter = netdev_priv(netdev);
1671 struct e1000_hw *hw = &adapter->hw;
1672 u32 icr = er32(ICR);
1675 * read ICR disables interrupts using IAM
1678 if (icr & E1000_ICR_LSC) {
1679 hw->mac.get_link_status = true;
1681 * ICH8 workaround-- Call gig speed drop workaround on cable
1682 * disconnect (LSC) before accessing any PHY registers
1684 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1685 (!(er32(STATUS) & E1000_STATUS_LU)))
1686 schedule_work(&adapter->downshift_task);
1689 * 80003ES2LAN workaround-- For packet buffer work-around on
1690 * link down event; disable receives here in the ISR and reset
1691 * adapter in watchdog
1693 if (netif_carrier_ok(netdev) &&
1694 adapter->flags & FLAG_RX_NEEDS_RESTART) {
1695 /* disable receives */
1696 u32 rctl = er32(RCTL);
1697 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1698 adapter->flags |= FLAG_RX_RESTART_NOW;
1700 /* guard against interrupt when we're going down */
1701 if (!test_bit(__E1000_DOWN, &adapter->state))
1702 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1705 if (napi_schedule_prep(&adapter->napi)) {
1706 adapter->total_tx_bytes = 0;
1707 adapter->total_tx_packets = 0;
1708 adapter->total_rx_bytes = 0;
1709 adapter->total_rx_packets = 0;
1710 __napi_schedule(&adapter->napi);
1717 * e1000_intr - Interrupt Handler
1718 * @irq: interrupt number
1719 * @data: pointer to a network interface device structure
1721 static irqreturn_t e1000_intr(int irq, void *data)
1723 struct net_device *netdev = data;
1724 struct e1000_adapter *adapter = netdev_priv(netdev);
1725 struct e1000_hw *hw = &adapter->hw;
1726 u32 rctl, icr = er32(ICR);
1728 if (!icr || test_bit(__E1000_DOWN, &adapter->state))
1729 return IRQ_NONE; /* Not our interrupt */
1732 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1733 * not set, then the adapter didn't send an interrupt
1735 if (!(icr & E1000_ICR_INT_ASSERTED))
1739 * Interrupt Auto-Mask...upon reading ICR,
1740 * interrupts are masked. No need for the
1744 if (icr & E1000_ICR_LSC) {
1745 hw->mac.get_link_status = true;
1747 * ICH8 workaround-- Call gig speed drop workaround on cable
1748 * disconnect (LSC) before accessing any PHY registers
1750 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1751 (!(er32(STATUS) & E1000_STATUS_LU)))
1752 schedule_work(&adapter->downshift_task);
1755 * 80003ES2LAN workaround--
1756 * For packet buffer work-around on link down event;
1757 * disable receives here in the ISR and
1758 * reset adapter in watchdog
1760 if (netif_carrier_ok(netdev) &&
1761 (adapter->flags & FLAG_RX_NEEDS_RESTART)) {
1762 /* disable receives */
1764 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1765 adapter->flags |= FLAG_RX_RESTART_NOW;
1767 /* guard against interrupt when we're going down */
1768 if (!test_bit(__E1000_DOWN, &adapter->state))
1769 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1772 if (napi_schedule_prep(&adapter->napi)) {
1773 adapter->total_tx_bytes = 0;
1774 adapter->total_tx_packets = 0;
1775 adapter->total_rx_bytes = 0;
1776 adapter->total_rx_packets = 0;
1777 __napi_schedule(&adapter->napi);
1783 static irqreturn_t e1000_msix_other(int irq, void *data)
1785 struct net_device *netdev = data;
1786 struct e1000_adapter *adapter = netdev_priv(netdev);
1787 struct e1000_hw *hw = &adapter->hw;
1788 u32 icr = er32(ICR);
1790 if (!(icr & E1000_ICR_INT_ASSERTED)) {
1791 if (!test_bit(__E1000_DOWN, &adapter->state))
1792 ew32(IMS, E1000_IMS_OTHER);
1796 if (icr & adapter->eiac_mask)
1797 ew32(ICS, (icr & adapter->eiac_mask));
1799 if (icr & E1000_ICR_OTHER) {
1800 if (!(icr & E1000_ICR_LSC))
1801 goto no_link_interrupt;
1802 hw->mac.get_link_status = true;
1803 /* guard against interrupt when we're going down */
1804 if (!test_bit(__E1000_DOWN, &adapter->state))
1805 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1809 if (!test_bit(__E1000_DOWN, &adapter->state))
1810 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER);
1816 static irqreturn_t e1000_intr_msix_tx(int irq, void *data)
1818 struct net_device *netdev = data;
1819 struct e1000_adapter *adapter = netdev_priv(netdev);
1820 struct e1000_hw *hw = &adapter->hw;
1821 struct e1000_ring *tx_ring = adapter->tx_ring;
1824 adapter->total_tx_bytes = 0;
1825 adapter->total_tx_packets = 0;
1827 if (!e1000_clean_tx_irq(tx_ring))
1828 /* Ring was not completely cleaned, so fire another interrupt */
1829 ew32(ICS, tx_ring->ims_val);
1834 static irqreturn_t e1000_intr_msix_rx(int irq, void *data)
1836 struct net_device *netdev = data;
1837 struct e1000_adapter *adapter = netdev_priv(netdev);
1838 struct e1000_ring *rx_ring = adapter->rx_ring;
1840 /* Write the ITR value calculated at the end of the
1841 * previous interrupt.
1843 if (rx_ring->set_itr) {
1844 writel(1000000000 / (rx_ring->itr_val * 256),
1845 rx_ring->itr_register);
1846 rx_ring->set_itr = 0;
1849 if (napi_schedule_prep(&adapter->napi)) {
1850 adapter->total_rx_bytes = 0;
1851 adapter->total_rx_packets = 0;
1852 __napi_schedule(&adapter->napi);
1858 * e1000_configure_msix - Configure MSI-X hardware
1860 * e1000_configure_msix sets up the hardware to properly
1861 * generate MSI-X interrupts.
1863 static void e1000_configure_msix(struct e1000_adapter *adapter)
1865 struct e1000_hw *hw = &adapter->hw;
1866 struct e1000_ring *rx_ring = adapter->rx_ring;
1867 struct e1000_ring *tx_ring = adapter->tx_ring;
1869 u32 ctrl_ext, ivar = 0;
1871 adapter->eiac_mask = 0;
1873 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1874 if (hw->mac.type == e1000_82574) {
1875 u32 rfctl = er32(RFCTL);
1876 rfctl |= E1000_RFCTL_ACK_DIS;
1880 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1881 /* Configure Rx vector */
1882 rx_ring->ims_val = E1000_IMS_RXQ0;
1883 adapter->eiac_mask |= rx_ring->ims_val;
1884 if (rx_ring->itr_val)
1885 writel(1000000000 / (rx_ring->itr_val * 256),
1886 rx_ring->itr_register);
1888 writel(1, rx_ring->itr_register);
1889 ivar = E1000_IVAR_INT_ALLOC_VALID | vector;
1891 /* Configure Tx vector */
1892 tx_ring->ims_val = E1000_IMS_TXQ0;
1894 if (tx_ring->itr_val)
1895 writel(1000000000 / (tx_ring->itr_val * 256),
1896 tx_ring->itr_register);
1898 writel(1, tx_ring->itr_register);
1899 adapter->eiac_mask |= tx_ring->ims_val;
1900 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8);
1902 /* set vector for Other Causes, e.g. link changes */
1904 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16);
1905 if (rx_ring->itr_val)
1906 writel(1000000000 / (rx_ring->itr_val * 256),
1907 hw->hw_addr + E1000_EITR_82574(vector));
1909 writel(1, hw->hw_addr + E1000_EITR_82574(vector));
1911 /* Cause Tx interrupts on every write back */
1916 /* enable MSI-X PBA support */
1917 ctrl_ext = er32(CTRL_EXT);
1918 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR;
1920 /* Auto-Mask Other interrupts upon ICR read */
1921 #define E1000_EIAC_MASK_82574 0x01F00000
1922 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER);
1923 ctrl_ext |= E1000_CTRL_EXT_EIAME;
1924 ew32(CTRL_EXT, ctrl_ext);
1928 void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter)
1930 if (adapter->msix_entries) {
1931 pci_disable_msix(adapter->pdev);
1932 kfree(adapter->msix_entries);
1933 adapter->msix_entries = NULL;
1934 } else if (adapter->flags & FLAG_MSI_ENABLED) {
1935 pci_disable_msi(adapter->pdev);
1936 adapter->flags &= ~FLAG_MSI_ENABLED;
1941 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1943 * Attempt to configure interrupts using the best available
1944 * capabilities of the hardware and kernel.
1946 void e1000e_set_interrupt_capability(struct e1000_adapter *adapter)
1951 switch (adapter->int_mode) {
1952 case E1000E_INT_MODE_MSIX:
1953 if (adapter->flags & FLAG_HAS_MSIX) {
1954 adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */
1955 adapter->msix_entries = kcalloc(adapter->num_vectors,
1956 sizeof(struct msix_entry),
1958 if (adapter->msix_entries) {
1959 for (i = 0; i < adapter->num_vectors; i++)
1960 adapter->msix_entries[i].entry = i;
1962 err = pci_enable_msix(adapter->pdev,
1963 adapter->msix_entries,
1964 adapter->num_vectors);
1968 /* MSI-X failed, so fall through and try MSI */
1969 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n");
1970 e1000e_reset_interrupt_capability(adapter);
1972 adapter->int_mode = E1000E_INT_MODE_MSI;
1974 case E1000E_INT_MODE_MSI:
1975 if (!pci_enable_msi(adapter->pdev)) {
1976 adapter->flags |= FLAG_MSI_ENABLED;
1978 adapter->int_mode = E1000E_INT_MODE_LEGACY;
1979 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n");
1982 case E1000E_INT_MODE_LEGACY:
1983 /* Don't do anything; this is the system default */
1987 /* store the number of vectors being used */
1988 adapter->num_vectors = 1;
1992 * e1000_request_msix - Initialize MSI-X interrupts
1994 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1997 static int e1000_request_msix(struct e1000_adapter *adapter)
1999 struct net_device *netdev = adapter->netdev;
2000 int err = 0, vector = 0;
2002 if (strlen(netdev->name) < (IFNAMSIZ - 5))
2003 snprintf(adapter->rx_ring->name,
2004 sizeof(adapter->rx_ring->name) - 1,
2005 "%s-rx-0", netdev->name);
2007 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
2008 err = request_irq(adapter->msix_entries[vector].vector,
2009 e1000_intr_msix_rx, 0, adapter->rx_ring->name,
2013 adapter->rx_ring->itr_register = adapter->hw.hw_addr +
2014 E1000_EITR_82574(vector);
2015 adapter->rx_ring->itr_val = adapter->itr;
2018 if (strlen(netdev->name) < (IFNAMSIZ - 5))
2019 snprintf(adapter->tx_ring->name,
2020 sizeof(adapter->tx_ring->name) - 1,
2021 "%s-tx-0", netdev->name);
2023 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
2024 err = request_irq(adapter->msix_entries[vector].vector,
2025 e1000_intr_msix_tx, 0, adapter->tx_ring->name,
2029 adapter->tx_ring->itr_register = adapter->hw.hw_addr +
2030 E1000_EITR_82574(vector);
2031 adapter->tx_ring->itr_val = adapter->itr;
2034 err = request_irq(adapter->msix_entries[vector].vector,
2035 e1000_msix_other, 0, netdev->name, netdev);
2039 e1000_configure_msix(adapter);
2045 * e1000_request_irq - initialize interrupts
2047 * Attempts to configure interrupts using the best available
2048 * capabilities of the hardware and kernel.
2050 static int e1000_request_irq(struct e1000_adapter *adapter)
2052 struct net_device *netdev = adapter->netdev;
2055 if (adapter->msix_entries) {
2056 err = e1000_request_msix(adapter);
2059 /* fall back to MSI */
2060 e1000e_reset_interrupt_capability(adapter);
2061 adapter->int_mode = E1000E_INT_MODE_MSI;
2062 e1000e_set_interrupt_capability(adapter);
2064 if (adapter->flags & FLAG_MSI_ENABLED) {
2065 err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0,
2066 netdev->name, netdev);
2070 /* fall back to legacy interrupt */
2071 e1000e_reset_interrupt_capability(adapter);
2072 adapter->int_mode = E1000E_INT_MODE_LEGACY;
2075 err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED,
2076 netdev->name, netdev);
2078 e_err("Unable to allocate interrupt, Error: %d\n", err);
2083 static void e1000_free_irq(struct e1000_adapter *adapter)
2085 struct net_device *netdev = adapter->netdev;
2087 if (adapter->msix_entries) {
2090 free_irq(adapter->msix_entries[vector].vector, netdev);
2093 free_irq(adapter->msix_entries[vector].vector, netdev);
2096 /* Other Causes interrupt vector */
2097 free_irq(adapter->msix_entries[vector].vector, netdev);
2101 free_irq(adapter->pdev->irq, netdev);
2105 * e1000_irq_disable - Mask off interrupt generation on the NIC
2107 static void e1000_irq_disable(struct e1000_adapter *adapter)
2109 struct e1000_hw *hw = &adapter->hw;
2112 if (adapter->msix_entries)
2113 ew32(EIAC_82574, 0);
2116 if (adapter->msix_entries) {
2118 for (i = 0; i < adapter->num_vectors; i++)
2119 synchronize_irq(adapter->msix_entries[i].vector);
2121 synchronize_irq(adapter->pdev->irq);
2126 * e1000_irq_enable - Enable default interrupt generation settings
2128 static void e1000_irq_enable(struct e1000_adapter *adapter)
2130 struct e1000_hw *hw = &adapter->hw;
2132 if (adapter->msix_entries) {
2133 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574);
2134 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC);
2136 ew32(IMS, IMS_ENABLE_MASK);
2142 * e1000e_get_hw_control - get control of the h/w from f/w
2143 * @adapter: address of board private structure
2145 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2146 * For ASF and Pass Through versions of f/w this means that
2147 * the driver is loaded. For AMT version (only with 82573)
2148 * of the f/w this means that the network i/f is open.
2150 void e1000e_get_hw_control(struct e1000_adapter *adapter)
2152 struct e1000_hw *hw = &adapter->hw;
2156 /* Let firmware know the driver has taken over */
2157 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
2159 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
2160 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
2161 ctrl_ext = er32(CTRL_EXT);
2162 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
2167 * e1000e_release_hw_control - release control of the h/w to f/w
2168 * @adapter: address of board private structure
2170 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2171 * For ASF and Pass Through versions of f/w this means that the
2172 * driver is no longer loaded. For AMT version (only with 82573) i
2173 * of the f/w this means that the network i/f is closed.
2176 void e1000e_release_hw_control(struct e1000_adapter *adapter)
2178 struct e1000_hw *hw = &adapter->hw;
2182 /* Let firmware taken over control of h/w */
2183 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
2185 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
2186 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
2187 ctrl_ext = er32(CTRL_EXT);
2188 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
2193 * @e1000_alloc_ring - allocate memory for a ring structure
2195 static int e1000_alloc_ring_dma(struct e1000_adapter *adapter,
2196 struct e1000_ring *ring)
2198 struct pci_dev *pdev = adapter->pdev;
2200 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma,
2209 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
2210 * @tx_ring: Tx descriptor ring
2212 * Return 0 on success, negative on failure
2214 int e1000e_setup_tx_resources(struct e1000_ring *tx_ring)
2216 struct e1000_adapter *adapter = tx_ring->adapter;
2217 int err = -ENOMEM, size;
2219 size = sizeof(struct e1000_buffer) * tx_ring->count;
2220 tx_ring->buffer_info = vzalloc(size);
2221 if (!tx_ring->buffer_info)
2224 /* round up to nearest 4K */
2225 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
2226 tx_ring->size = ALIGN(tx_ring->size, 4096);
2228 err = e1000_alloc_ring_dma(adapter, tx_ring);
2232 tx_ring->next_to_use = 0;
2233 tx_ring->next_to_clean = 0;
2237 vfree(tx_ring->buffer_info);
2238 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2243 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
2244 * @rx_ring: Rx descriptor ring
2246 * Returns 0 on success, negative on failure
2248 int e1000e_setup_rx_resources(struct e1000_ring *rx_ring)
2250 struct e1000_adapter *adapter = rx_ring->adapter;
2251 struct e1000_buffer *buffer_info;
2252 int i, size, desc_len, err = -ENOMEM;
2254 size = sizeof(struct e1000_buffer) * rx_ring->count;
2255 rx_ring->buffer_info = vzalloc(size);
2256 if (!rx_ring->buffer_info)
2259 for (i = 0; i < rx_ring->count; i++) {
2260 buffer_info = &rx_ring->buffer_info[i];
2261 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS,
2262 sizeof(struct e1000_ps_page),
2264 if (!buffer_info->ps_pages)
2268 desc_len = sizeof(union e1000_rx_desc_packet_split);
2270 /* Round up to nearest 4K */
2271 rx_ring->size = rx_ring->count * desc_len;
2272 rx_ring->size = ALIGN(rx_ring->size, 4096);
2274 err = e1000_alloc_ring_dma(adapter, rx_ring);
2278 rx_ring->next_to_clean = 0;
2279 rx_ring->next_to_use = 0;
2280 rx_ring->rx_skb_top = NULL;
2285 for (i = 0; i < rx_ring->count; i++) {
2286 buffer_info = &rx_ring->buffer_info[i];
2287 kfree(buffer_info->ps_pages);
2290 vfree(rx_ring->buffer_info);
2291 e_err("Unable to allocate memory for the receive descriptor ring\n");
2296 * e1000_clean_tx_ring - Free Tx Buffers
2297 * @tx_ring: Tx descriptor ring
2299 static void e1000_clean_tx_ring(struct e1000_ring *tx_ring)
2301 struct e1000_adapter *adapter = tx_ring->adapter;
2302 struct e1000_buffer *buffer_info;
2306 for (i = 0; i < tx_ring->count; i++) {
2307 buffer_info = &tx_ring->buffer_info[i];
2308 e1000_put_txbuf(tx_ring, buffer_info);
2311 netdev_reset_queue(adapter->netdev);
2312 size = sizeof(struct e1000_buffer) * tx_ring->count;
2313 memset(tx_ring->buffer_info, 0, size);
2315 memset(tx_ring->desc, 0, tx_ring->size);
2317 tx_ring->next_to_use = 0;
2318 tx_ring->next_to_clean = 0;
2320 writel(0, tx_ring->head);
2321 writel(0, tx_ring->tail);
2325 * e1000e_free_tx_resources - Free Tx Resources per Queue
2326 * @tx_ring: Tx descriptor ring
2328 * Free all transmit software resources
2330 void e1000e_free_tx_resources(struct e1000_ring *tx_ring)
2332 struct e1000_adapter *adapter = tx_ring->adapter;
2333 struct pci_dev *pdev = adapter->pdev;
2335 e1000_clean_tx_ring(tx_ring);
2337 vfree(tx_ring->buffer_info);
2338 tx_ring->buffer_info = NULL;
2340 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
2342 tx_ring->desc = NULL;
2346 * e1000e_free_rx_resources - Free Rx Resources
2347 * @rx_ring: Rx descriptor ring
2349 * Free all receive software resources
2351 void e1000e_free_rx_resources(struct e1000_ring *rx_ring)
2353 struct e1000_adapter *adapter = rx_ring->adapter;
2354 struct pci_dev *pdev = adapter->pdev;
2357 e1000_clean_rx_ring(rx_ring);
2359 for (i = 0; i < rx_ring->count; i++)
2360 kfree(rx_ring->buffer_info[i].ps_pages);
2362 vfree(rx_ring->buffer_info);
2363 rx_ring->buffer_info = NULL;
2365 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
2367 rx_ring->desc = NULL;
2371 * e1000_update_itr - update the dynamic ITR value based on statistics
2372 * @adapter: pointer to adapter
2373 * @itr_setting: current adapter->itr
2374 * @packets: the number of packets during this measurement interval
2375 * @bytes: the number of bytes during this measurement interval
2377 * Stores a new ITR value based on packets and byte
2378 * counts during the last interrupt. The advantage of per interrupt
2379 * computation is faster updates and more accurate ITR for the current
2380 * traffic pattern. Constants in this function were computed
2381 * based on theoretical maximum wire speed and thresholds were set based
2382 * on testing data as well as attempting to minimize response time
2383 * while increasing bulk throughput. This functionality is controlled
2384 * by the InterruptThrottleRate module parameter.
2386 static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
2387 u16 itr_setting, int packets,
2390 unsigned int retval = itr_setting;
2395 switch (itr_setting) {
2396 case lowest_latency:
2397 /* handle TSO and jumbo frames */
2398 if (bytes/packets > 8000)
2399 retval = bulk_latency;
2400 else if ((packets < 5) && (bytes > 512))
2401 retval = low_latency;
2403 case low_latency: /* 50 usec aka 20000 ints/s */
2404 if (bytes > 10000) {
2405 /* this if handles the TSO accounting */
2406 if (bytes/packets > 8000)
2407 retval = bulk_latency;
2408 else if ((packets < 10) || ((bytes/packets) > 1200))
2409 retval = bulk_latency;
2410 else if ((packets > 35))
2411 retval = lowest_latency;
2412 } else if (bytes/packets > 2000) {
2413 retval = bulk_latency;
2414 } else if (packets <= 2 && bytes < 512) {
2415 retval = lowest_latency;
2418 case bulk_latency: /* 250 usec aka 4000 ints/s */
2419 if (bytes > 25000) {
2421 retval = low_latency;
2422 } else if (bytes < 6000) {
2423 retval = low_latency;
2431 static void e1000_set_itr(struct e1000_adapter *adapter)
2433 struct e1000_hw *hw = &adapter->hw;
2435 u32 new_itr = adapter->itr;
2437 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2438 if (adapter->link_speed != SPEED_1000) {
2444 if (adapter->flags2 & FLAG2_DISABLE_AIM) {
2449 adapter->tx_itr = e1000_update_itr(adapter,
2451 adapter->total_tx_packets,
2452 adapter->total_tx_bytes);
2453 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2454 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
2455 adapter->tx_itr = low_latency;
2457 adapter->rx_itr = e1000_update_itr(adapter,
2459 adapter->total_rx_packets,
2460 adapter->total_rx_bytes);
2461 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2462 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
2463 adapter->rx_itr = low_latency;
2465 current_itr = max(adapter->rx_itr, adapter->tx_itr);
2467 switch (current_itr) {
2468 /* counts and packets in update_itr are dependent on these numbers */
2469 case lowest_latency:
2473 new_itr = 20000; /* aka hwitr = ~200 */
2483 if (new_itr != adapter->itr) {
2485 * this attempts to bias the interrupt rate towards Bulk
2486 * by adding intermediate steps when interrupt rate is
2489 new_itr = new_itr > adapter->itr ?
2490 min(adapter->itr + (new_itr >> 2), new_itr) :
2492 adapter->itr = new_itr;
2493 adapter->rx_ring->itr_val = new_itr;
2494 if (adapter->msix_entries)
2495 adapter->rx_ring->set_itr = 1;
2498 ew32(ITR, 1000000000 / (new_itr * 256));
2505 * e1000_alloc_queues - Allocate memory for all rings
2506 * @adapter: board private structure to initialize
2508 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter)
2510 int size = sizeof(struct e1000_ring);
2512 adapter->tx_ring = kzalloc(size, GFP_KERNEL);
2513 if (!adapter->tx_ring)
2515 adapter->tx_ring->count = adapter->tx_ring_count;
2516 adapter->tx_ring->adapter = adapter;
2518 adapter->rx_ring = kzalloc(size, GFP_KERNEL);
2519 if (!adapter->rx_ring)
2521 adapter->rx_ring->count = adapter->rx_ring_count;
2522 adapter->rx_ring->adapter = adapter;
2526 e_err("Unable to allocate memory for queues\n");
2527 kfree(adapter->rx_ring);
2528 kfree(adapter->tx_ring);
2533 * e1000_clean - NAPI Rx polling callback
2534 * @napi: struct associated with this polling callback
2535 * @budget: amount of packets driver is allowed to process this poll
2537 static int e1000_clean(struct napi_struct *napi, int budget)
2539 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
2540 struct e1000_hw *hw = &adapter->hw;
2541 struct net_device *poll_dev = adapter->netdev;
2542 int tx_cleaned = 1, work_done = 0;
2544 adapter = netdev_priv(poll_dev);
2546 if (adapter->msix_entries &&
2547 !(adapter->rx_ring->ims_val & adapter->tx_ring->ims_val))
2550 tx_cleaned = e1000_clean_tx_irq(adapter->tx_ring);
2553 adapter->clean_rx(adapter->rx_ring, &work_done, budget);
2558 /* If budget not fully consumed, exit the polling mode */
2559 if (work_done < budget) {
2560 if (adapter->itr_setting & 3)
2561 e1000_set_itr(adapter);
2562 napi_complete(napi);
2563 if (!test_bit(__E1000_DOWN, &adapter->state)) {
2564 if (adapter->msix_entries)
2565 ew32(IMS, adapter->rx_ring->ims_val);
2567 e1000_irq_enable(adapter);
2574 static int e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
2576 struct e1000_adapter *adapter = netdev_priv(netdev);
2577 struct e1000_hw *hw = &adapter->hw;
2580 /* don't update vlan cookie if already programmed */
2581 if ((adapter->hw.mng_cookie.status &
2582 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2583 (vid == adapter->mng_vlan_id))
2586 /* add VID to filter table */
2587 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2588 index = (vid >> 5) & 0x7F;
2589 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2590 vfta |= (1 << (vid & 0x1F));
2591 hw->mac.ops.write_vfta(hw, index, vfta);
2594 set_bit(vid, adapter->active_vlans);
2599 static int e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
2601 struct e1000_adapter *adapter = netdev_priv(netdev);
2602 struct e1000_hw *hw = &adapter->hw;
2605 if ((adapter->hw.mng_cookie.status &
2606 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2607 (vid == adapter->mng_vlan_id)) {
2608 /* release control to f/w */
2609 e1000e_release_hw_control(adapter);
2613 /* remove VID from filter table */
2614 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2615 index = (vid >> 5) & 0x7F;
2616 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2617 vfta &= ~(1 << (vid & 0x1F));
2618 hw->mac.ops.write_vfta(hw, index, vfta);
2621 clear_bit(vid, adapter->active_vlans);
2627 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
2628 * @adapter: board private structure to initialize
2630 static void e1000e_vlan_filter_disable(struct e1000_adapter *adapter)
2632 struct net_device *netdev = adapter->netdev;
2633 struct e1000_hw *hw = &adapter->hw;
2636 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2637 /* disable VLAN receive filtering */
2639 rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN);
2642 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) {
2643 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
2644 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2650 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
2651 * @adapter: board private structure to initialize
2653 static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter)
2655 struct e1000_hw *hw = &adapter->hw;
2658 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2659 /* enable VLAN receive filtering */
2661 rctl |= E1000_RCTL_VFE;
2662 rctl &= ~E1000_RCTL_CFIEN;
2668 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping
2669 * @adapter: board private structure to initialize
2671 static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter)
2673 struct e1000_hw *hw = &adapter->hw;
2676 /* disable VLAN tag insert/strip */
2678 ctrl &= ~E1000_CTRL_VME;
2683 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
2684 * @adapter: board private structure to initialize
2686 static void e1000e_vlan_strip_enable(struct e1000_adapter *adapter)
2688 struct e1000_hw *hw = &adapter->hw;
2691 /* enable VLAN tag insert/strip */
2693 ctrl |= E1000_CTRL_VME;
2697 static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
2699 struct net_device *netdev = adapter->netdev;
2700 u16 vid = adapter->hw.mng_cookie.vlan_id;
2701 u16 old_vid = adapter->mng_vlan_id;
2703 if (adapter->hw.mng_cookie.status &
2704 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
2705 e1000_vlan_rx_add_vid(netdev, vid);
2706 adapter->mng_vlan_id = vid;
2709 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && (vid != old_vid))
2710 e1000_vlan_rx_kill_vid(netdev, old_vid);
2713 static void e1000_restore_vlan(struct e1000_adapter *adapter)
2717 e1000_vlan_rx_add_vid(adapter->netdev, 0);
2719 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
2720 e1000_vlan_rx_add_vid(adapter->netdev, vid);
2723 static void e1000_init_manageability_pt(struct e1000_adapter *adapter)
2725 struct e1000_hw *hw = &adapter->hw;
2726 u32 manc, manc2h, mdef, i, j;
2728 if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
2734 * enable receiving management packets to the host. this will probably
2735 * generate destination unreachable messages from the host OS, but
2736 * the packets will be handled on SMBUS
2738 manc |= E1000_MANC_EN_MNG2HOST;
2739 manc2h = er32(MANC2H);
2741 switch (hw->mac.type) {
2743 manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664);
2748 * Check if IPMI pass-through decision filter already exists;
2751 for (i = 0, j = 0; i < 8; i++) {
2752 mdef = er32(MDEF(i));
2754 /* Ignore filters with anything other than IPMI ports */
2755 if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
2758 /* Enable this decision filter in MANC2H */
2765 if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
2768 /* Create new decision filter in an empty filter */
2769 for (i = 0, j = 0; i < 8; i++)
2770 if (er32(MDEF(i)) == 0) {
2771 ew32(MDEF(i), (E1000_MDEF_PORT_623 |
2772 E1000_MDEF_PORT_664));
2779 e_warn("Unable to create IPMI pass-through filter\n");
2783 ew32(MANC2H, manc2h);
2788 * e1000_configure_tx - Configure Transmit Unit after Reset
2789 * @adapter: board private structure
2791 * Configure the Tx unit of the MAC after a reset.
2793 static void e1000_configure_tx(struct e1000_adapter *adapter)
2795 struct e1000_hw *hw = &adapter->hw;
2796 struct e1000_ring *tx_ring = adapter->tx_ring;
2800 /* Setup the HW Tx Head and Tail descriptor pointers */
2801 tdba = tx_ring->dma;
2802 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc);
2803 ew32(TDBAL, (tdba & DMA_BIT_MASK(32)));
2804 ew32(TDBAH, (tdba >> 32));
2808 tx_ring->head = adapter->hw.hw_addr + E1000_TDH;
2809 tx_ring->tail = adapter->hw.hw_addr + E1000_TDT;
2811 /* Set the Tx Interrupt Delay register */
2812 ew32(TIDV, adapter->tx_int_delay);
2813 /* Tx irq moderation */
2814 ew32(TADV, adapter->tx_abs_int_delay);
2816 if (adapter->flags2 & FLAG2_DMA_BURST) {
2817 u32 txdctl = er32(TXDCTL(0));
2818 txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH |
2819 E1000_TXDCTL_WTHRESH);
2821 * set up some performance related parameters to encourage the
2822 * hardware to use the bus more efficiently in bursts, depends
2823 * on the tx_int_delay to be enabled,
2824 * wthresh = 5 ==> burst write a cacheline (64 bytes) at a time
2825 * hthresh = 1 ==> prefetch when one or more available
2826 * pthresh = 0x1f ==> prefetch if internal cache 31 or less
2827 * BEWARE: this seems to work but should be considered first if
2828 * there are Tx hangs or other Tx related bugs
2830 txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE;
2831 ew32(TXDCTL(0), txdctl);
2833 /* erratum work around: set txdctl the same for both queues */
2834 ew32(TXDCTL(1), er32(TXDCTL(0)));
2836 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) {
2837 tarc = er32(TARC(0));
2839 * set the speed mode bit, we'll clear it if we're not at
2840 * gigabit link later
2842 #define SPEED_MODE_BIT (1 << 21)
2843 tarc |= SPEED_MODE_BIT;
2844 ew32(TARC(0), tarc);
2847 /* errata: program both queues to unweighted RR */
2848 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) {
2849 tarc = er32(TARC(0));
2851 ew32(TARC(0), tarc);
2852 tarc = er32(TARC(1));
2854 ew32(TARC(1), tarc);
2857 /* Setup Transmit Descriptor Settings for eop descriptor */
2858 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
2860 /* only set IDE if we are delaying interrupts using the timers */
2861 if (adapter->tx_int_delay)
2862 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
2864 /* enable Report Status bit */
2865 adapter->txd_cmd |= E1000_TXD_CMD_RS;
2867 hw->mac.ops.config_collision_dist(hw);
2871 * e1000_setup_rctl - configure the receive control registers
2872 * @adapter: Board private structure
2874 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2875 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2876 static void e1000_setup_rctl(struct e1000_adapter *adapter)
2878 struct e1000_hw *hw = &adapter->hw;
2882 /* Workaround Si errata on 82579 - configure jumbo frame flow */
2883 if (hw->mac.type == e1000_pch2lan) {
2886 if (adapter->netdev->mtu > ETH_DATA_LEN)
2887 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true);
2889 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false);
2892 e_dbg("failed to enable jumbo frame workaround mode\n");
2895 /* Program MC offset vector base */
2897 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2898 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
2899 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
2900 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
2902 /* Do not Store bad packets */
2903 rctl &= ~E1000_RCTL_SBP;
2905 /* Enable Long Packet receive */
2906 if (adapter->netdev->mtu <= ETH_DATA_LEN)
2907 rctl &= ~E1000_RCTL_LPE;
2909 rctl |= E1000_RCTL_LPE;
2911 /* Some systems expect that the CRC is included in SMBUS traffic. The
2912 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2913 * host memory when this is enabled
2915 if (adapter->flags2 & FLAG2_CRC_STRIPPING)
2916 rctl |= E1000_RCTL_SECRC;
2918 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
2919 if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) {
2922 e1e_rphy(hw, PHY_REG(770, 26), &phy_data);
2924 phy_data |= (1 << 2);
2925 e1e_wphy(hw, PHY_REG(770, 26), phy_data);
2927 e1e_rphy(hw, 22, &phy_data);
2929 phy_data |= (1 << 14);
2930 e1e_wphy(hw, 0x10, 0x2823);
2931 e1e_wphy(hw, 0x11, 0x0003);
2932 e1e_wphy(hw, 22, phy_data);
2935 /* Setup buffer sizes */
2936 rctl &= ~E1000_RCTL_SZ_4096;
2937 rctl |= E1000_RCTL_BSEX;
2938 switch (adapter->rx_buffer_len) {
2941 rctl |= E1000_RCTL_SZ_2048;
2942 rctl &= ~E1000_RCTL_BSEX;
2945 rctl |= E1000_RCTL_SZ_4096;
2948 rctl |= E1000_RCTL_SZ_8192;
2951 rctl |= E1000_RCTL_SZ_16384;
2955 /* Enable Extended Status in all Receive Descriptors */
2956 rfctl = er32(RFCTL);
2957 rfctl |= E1000_RFCTL_EXTEN;
2960 * 82571 and greater support packet-split where the protocol
2961 * header is placed in skb->data and the packet data is
2962 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2963 * In the case of a non-split, skb->data is linearly filled,
2964 * followed by the page buffers. Therefore, skb->data is
2965 * sized to hold the largest protocol header.
2967 * allocations using alloc_page take too long for regular MTU
2968 * so only enable packet split for jumbo frames
2970 * Using pages when the page size is greater than 16k wastes
2971 * a lot of memory, since we allocate 3 pages at all times
2974 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
2975 if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE))
2976 adapter->rx_ps_pages = pages;
2978 adapter->rx_ps_pages = 0;
2980 if (adapter->rx_ps_pages) {
2984 * disable packet split support for IPv6 extension headers,
2985 * because some malformed IPv6 headers can hang the Rx
2987 rfctl |= (E1000_RFCTL_IPV6_EX_DIS |
2988 E1000_RFCTL_NEW_IPV6_EXT_DIS);
2990 /* Enable Packet split descriptors */
2991 rctl |= E1000_RCTL_DTYP_PS;
2993 psrctl |= adapter->rx_ps_bsize0 >>
2994 E1000_PSRCTL_BSIZE0_SHIFT;
2996 switch (adapter->rx_ps_pages) {
2998 psrctl |= PAGE_SIZE <<
2999 E1000_PSRCTL_BSIZE3_SHIFT;
3001 psrctl |= PAGE_SIZE <<
3002 E1000_PSRCTL_BSIZE2_SHIFT;
3004 psrctl |= PAGE_SIZE >>
3005 E1000_PSRCTL_BSIZE1_SHIFT;
3009 ew32(PSRCTL, psrctl);
3012 /* This is useful for sniffing bad packets. */
3013 if (adapter->netdev->features & NETIF_F_RXALL) {
3014 /* UPE and MPE will be handled by normal PROMISC logic
3015 * in e1000e_set_rx_mode */
3016 rctl |= (E1000_RCTL_SBP | /* Receive bad packets */
3017 E1000_RCTL_BAM | /* RX All Bcast Pkts */
3018 E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */
3020 rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */
3021 E1000_RCTL_DPF | /* Allow filtered pause */
3022 E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */
3023 /* Do not mess with E1000_CTRL_VME, it affects transmit as well,
3024 * and that breaks VLANs.
3030 /* just started the receive unit, no need to restart */
3031 adapter->flags &= ~FLAG_RX_RESTART_NOW;
3035 * e1000_configure_rx - Configure Receive Unit after Reset
3036 * @adapter: board private structure
3038 * Configure the Rx unit of the MAC after a reset.
3040 static void e1000_configure_rx(struct e1000_adapter *adapter)
3042 struct e1000_hw *hw = &adapter->hw;
3043 struct e1000_ring *rx_ring = adapter->rx_ring;
3045 u32 rdlen, rctl, rxcsum, ctrl_ext;
3047 if (adapter->rx_ps_pages) {
3048 /* this is a 32 byte descriptor */
3049 rdlen = rx_ring->count *
3050 sizeof(union e1000_rx_desc_packet_split);
3051 adapter->clean_rx = e1000_clean_rx_irq_ps;
3052 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
3053 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) {
3054 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended);
3055 adapter->clean_rx = e1000_clean_jumbo_rx_irq;
3056 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
3058 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended);
3059 adapter->clean_rx = e1000_clean_rx_irq;
3060 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
3063 /* disable receives while setting up the descriptors */
3065 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
3066 ew32(RCTL, rctl & ~E1000_RCTL_EN);
3068 usleep_range(10000, 20000);
3070 if (adapter->flags2 & FLAG2_DMA_BURST) {
3072 * set the writeback threshold (only takes effect if the RDTR
3073 * is set). set GRAN=1 and write back up to 0x4 worth, and
3074 * enable prefetching of 0x20 Rx descriptors
3080 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE);
3081 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE);
3084 * override the delay timers for enabling bursting, only if
3085 * the value was not set by the user via module options
3087 if (adapter->rx_int_delay == DEFAULT_RDTR)
3088 adapter->rx_int_delay = BURST_RDTR;
3089 if (adapter->rx_abs_int_delay == DEFAULT_RADV)
3090 adapter->rx_abs_int_delay = BURST_RADV;
3093 /* set the Receive Delay Timer Register */
3094 ew32(RDTR, adapter->rx_int_delay);
3096 /* irq moderation */
3097 ew32(RADV, adapter->rx_abs_int_delay);
3098 if ((adapter->itr_setting != 0) && (adapter->itr != 0))
3099 ew32(ITR, 1000000000 / (adapter->itr * 256));
3101 ctrl_ext = er32(CTRL_EXT);
3102 /* Auto-Mask interrupts upon ICR access */
3103 ctrl_ext |= E1000_CTRL_EXT_IAME;
3104 ew32(IAM, 0xffffffff);
3105 ew32(CTRL_EXT, ctrl_ext);
3109 * Setup the HW Rx Head and Tail Descriptor Pointers and
3110 * the Base and Length of the Rx Descriptor Ring
3112 rdba = rx_ring->dma;
3113 ew32(RDBAL, (rdba & DMA_BIT_MASK(32)));
3114 ew32(RDBAH, (rdba >> 32));
3118 rx_ring->head = adapter->hw.hw_addr + E1000_RDH;
3119 rx_ring->tail = adapter->hw.hw_addr + E1000_RDT;
3121 /* Enable Receive Checksum Offload for TCP and UDP */
3122 rxcsum = er32(RXCSUM);
3123 if (adapter->netdev->features & NETIF_F_RXCSUM) {
3124 rxcsum |= E1000_RXCSUM_TUOFL;
3127 * IPv4 payload checksum for UDP fragments must be
3128 * used in conjunction with packet-split.
3130 if (adapter->rx_ps_pages)
3131 rxcsum |= E1000_RXCSUM_IPPCSE;
3133 rxcsum &= ~E1000_RXCSUM_TUOFL;
3134 /* no need to clear IPPCSE as it defaults to 0 */
3136 ew32(RXCSUM, rxcsum);
3138 if (adapter->hw.mac.type == e1000_pch2lan) {
3140 * With jumbo frames, excessive C-state transition
3141 * latencies result in dropped transactions.
3143 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3144 u32 rxdctl = er32(RXDCTL(0));
3145 ew32(RXDCTL(0), rxdctl | 0x3);
3146 pm_qos_update_request(&adapter->netdev->pm_qos_req, 55);
3148 pm_qos_update_request(&adapter->netdev->pm_qos_req,
3149 PM_QOS_DEFAULT_VALUE);
3153 /* Enable Receives */
3158 * e1000e_write_mc_addr_list - write multicast addresses to MTA
3159 * @netdev: network interface device structure
3161 * Writes multicast address list to the MTA hash table.
3162 * Returns: -ENOMEM on failure
3163 * 0 on no addresses written
3164 * X on writing X addresses to MTA
3166 static int e1000e_write_mc_addr_list(struct net_device *netdev)
3168 struct e1000_adapter *adapter = netdev_priv(netdev);
3169 struct e1000_hw *hw = &adapter->hw;
3170 struct netdev_hw_addr *ha;
3174 if (netdev_mc_empty(netdev)) {
3175 /* nothing to program, so clear mc list */
3176 hw->mac.ops.update_mc_addr_list(hw, NULL, 0);
3180 mta_list = kzalloc(netdev_mc_count(netdev) * ETH_ALEN, GFP_ATOMIC);
3184 /* update_mc_addr_list expects a packed array of only addresses. */
3186 netdev_for_each_mc_addr(ha, netdev)
3187 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN);
3189 hw->mac.ops.update_mc_addr_list(hw, mta_list, i);
3192 return netdev_mc_count(netdev);
3196 * e1000e_write_uc_addr_list - write unicast addresses to RAR table
3197 * @netdev: network interface device structure
3199 * Writes unicast address list to the RAR table.
3200 * Returns: -ENOMEM on failure/insufficient address space
3201 * 0 on no addresses written
3202 * X on writing X addresses to the RAR table
3204 static int e1000e_write_uc_addr_list(struct net_device *netdev)
3206 struct e1000_adapter *adapter = netdev_priv(netdev);
3207 struct e1000_hw *hw = &adapter->hw;
3208 unsigned int rar_entries = hw->mac.rar_entry_count;
3211 /* save a rar entry for our hardware address */
3214 /* save a rar entry for the LAA workaround */
3215 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA)
3218 /* return ENOMEM indicating insufficient memory for addresses */
3219 if (netdev_uc_count(netdev) > rar_entries)
3222 if (!netdev_uc_empty(netdev) && rar_entries) {
3223 struct netdev_hw_addr *ha;
3226 * write the addresses in reverse order to avoid write
3229 netdev_for_each_uc_addr(ha, netdev) {
3232 e1000e_rar_set(hw, ha->addr, rar_entries--);
3237 /* zero out the remaining RAR entries not used above */
3238 for (; rar_entries > 0; rar_entries--) {
3239 ew32(RAH(rar_entries), 0);
3240 ew32(RAL(rar_entries), 0);
3248 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set
3249 * @netdev: network interface device structure
3251 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast
3252 * address list or the network interface flags are updated. This routine is
3253 * responsible for configuring the hardware for proper unicast, multicast,
3254 * promiscuous mode, and all-multi behavior.
3256 static void e1000e_set_rx_mode(struct net_device *netdev)
3258 struct e1000_adapter *adapter = netdev_priv(netdev);
3259 struct e1000_hw *hw = &adapter->hw;
3262 /* Check for Promiscuous and All Multicast modes */
3265 /* clear the affected bits */
3266 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
3268 if (netdev->flags & IFF_PROMISC) {
3269 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
3270 /* Do not hardware filter VLANs in promisc mode */
3271 e1000e_vlan_filter_disable(adapter);
3275 if (netdev->flags & IFF_ALLMULTI) {
3276 rctl |= E1000_RCTL_MPE;
3279 * Write addresses to the MTA, if the attempt fails
3280 * then we should just turn on promiscuous mode so
3281 * that we can at least receive multicast traffic
3283 count = e1000e_write_mc_addr_list(netdev);
3285 rctl |= E1000_RCTL_MPE;
3287 e1000e_vlan_filter_enable(adapter);
3289 * Write addresses to available RAR registers, if there is not
3290 * sufficient space to store all the addresses then enable
3291 * unicast promiscuous mode
3293 count = e1000e_write_uc_addr_list(netdev);
3295 rctl |= E1000_RCTL_UPE;
3300 if (netdev->features & NETIF_F_HW_VLAN_RX)
3301 e1000e_vlan_strip_enable(adapter);
3303 e1000e_vlan_strip_disable(adapter);
3306 static void e1000e_setup_rss_hash(struct e1000_adapter *adapter)
3308 struct e1000_hw *hw = &adapter->hw;
3311 static const u32 rsskey[10] = {
3312 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0,
3313 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe
3316 /* Fill out hash function seed */
3317 for (i = 0; i < 10; i++)
3318 ew32(RSSRK(i), rsskey[i]);
3320 /* Direct all traffic to queue 0 */
3321 for (i = 0; i < 32; i++)
3325 * Disable raw packet checksumming so that RSS hash is placed in
3326 * descriptor on writeback.
3328 rxcsum = er32(RXCSUM);
3329 rxcsum |= E1000_RXCSUM_PCSD;
3331 ew32(RXCSUM, rxcsum);
3333 mrqc = (E1000_MRQC_RSS_FIELD_IPV4 |
3334 E1000_MRQC_RSS_FIELD_IPV4_TCP |
3335 E1000_MRQC_RSS_FIELD_IPV6 |
3336 E1000_MRQC_RSS_FIELD_IPV6_TCP |
3337 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX);
3343 * e1000_configure - configure the hardware for Rx and Tx
3344 * @adapter: private board structure
3346 static void e1000_configure(struct e1000_adapter *adapter)
3348 struct e1000_ring *rx_ring = adapter->rx_ring;
3350 e1000e_set_rx_mode(adapter->netdev);
3352 e1000_restore_vlan(adapter);
3353 e1000_init_manageability_pt(adapter);
3355 e1000_configure_tx(adapter);
3357 if (adapter->netdev->features & NETIF_F_RXHASH)
3358 e1000e_setup_rss_hash(adapter);
3359 e1000_setup_rctl(adapter);
3360 e1000_configure_rx(adapter);
3361 adapter->alloc_rx_buf(rx_ring, e1000_desc_unused(rx_ring), GFP_KERNEL);
3365 * e1000e_power_up_phy - restore link in case the phy was powered down
3366 * @adapter: address of board private structure
3368 * The phy may be powered down to save power and turn off link when the
3369 * driver is unloaded and wake on lan is not enabled (among others)
3370 * *** this routine MUST be followed by a call to e1000e_reset ***
3372 void e1000e_power_up_phy(struct e1000_adapter *adapter)
3374 if (adapter->hw.phy.ops.power_up)
3375 adapter->hw.phy.ops.power_up(&adapter->hw);
3377 adapter->hw.mac.ops.setup_link(&adapter->hw);
3381 * e1000_power_down_phy - Power down the PHY
3383 * Power down the PHY so no link is implied when interface is down.
3384 * The PHY cannot be powered down if management or WoL is active.
3386 static void e1000_power_down_phy(struct e1000_adapter *adapter)
3388 /* WoL is enabled */
3392 if (adapter->hw.phy.ops.power_down)
3393 adapter->hw.phy.ops.power_down(&adapter->hw);
3397 * e1000e_reset - bring the hardware into a known good state
3399 * This function boots the hardware and enables some settings that
3400 * require a configuration cycle of the hardware - those cannot be
3401 * set/changed during runtime. After reset the device needs to be
3402 * properly configured for Rx, Tx etc.
3404 void e1000e_reset(struct e1000_adapter *adapter)
3406 struct e1000_mac_info *mac = &adapter->hw.mac;
3407 struct e1000_fc_info *fc = &adapter->hw.fc;
3408 struct e1000_hw *hw = &adapter->hw;
3409 u32 tx_space, min_tx_space, min_rx_space;
3410 u32 pba = adapter->pba;
3413 /* reset Packet Buffer Allocation to default */
3416 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
3418 * To maintain wire speed transmits, the Tx FIFO should be
3419 * large enough to accommodate two full transmit packets,
3420 * rounded up to the next 1KB and expressed in KB. Likewise,
3421 * the Rx FIFO should be large enough to accommodate at least
3422 * one full receive packet and is similarly rounded up and
3426 /* upper 16 bits has Tx packet buffer allocation size in KB */
3427 tx_space = pba >> 16;
3428 /* lower 16 bits has Rx packet buffer allocation size in KB */
3431 * the Tx fifo also stores 16 bytes of information about the Tx
3432 * but don't include ethernet FCS because hardware appends it
3434 min_tx_space = (adapter->max_frame_size +
3435 sizeof(struct e1000_tx_desc) -
3437 min_tx_space = ALIGN(min_tx_space, 1024);
3438 min_tx_space >>= 10;
3439 /* software strips receive CRC, so leave room for it */
3440 min_rx_space = adapter->max_frame_size;
3441 min_rx_space = ALIGN(min_rx_space, 1024);
3442 min_rx_space >>= 10;
3445 * If current Tx allocation is less than the min Tx FIFO size,
3446 * and the min Tx FIFO size is less than the current Rx FIFO
3447 * allocation, take space away from current Rx allocation
3449 if ((tx_space < min_tx_space) &&
3450 ((min_tx_space - tx_space) < pba)) {
3451 pba -= min_tx_space - tx_space;
3454 * if short on Rx space, Rx wins and must trump Tx
3455 * adjustment or use Early Receive if available
3457 if (pba < min_rx_space)
3465 * flow control settings
3467 * The high water mark must be low enough to fit one full frame
3468 * (or the size used for early receive) above it in the Rx FIFO.
3469 * Set it to the lower of:
3470 * - 90% of the Rx FIFO size, and
3471 * - the full Rx FIFO size minus one full frame
3473 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME)
3474 fc->pause_time = 0xFFFF;
3476 fc->pause_time = E1000_FC_PAUSE_TIME;
3477 fc->send_xon = true;
3478 fc->current_mode = fc->requested_mode;
3480 switch (hw->mac.type) {
3482 case e1000_ich10lan:
3483 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3486 fc->high_water = 0x2800;
3487 fc->low_water = fc->high_water - 8;
3492 hwm = min(((pba << 10) * 9 / 10),
3493 ((pba << 10) - adapter->max_frame_size));
3495 fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */
3496 fc->low_water = fc->high_water - 8;
3500 * Workaround PCH LOM adapter hangs with certain network
3501 * loads. If hangs persist, try disabling Tx flow control.
3503 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3504 fc->high_water = 0x3500;
3505 fc->low_water = 0x1500;
3507 fc->high_water = 0x5000;
3508 fc->low_water = 0x3000;
3510 fc->refresh_time = 0x1000;
3513 fc->high_water = 0x05C20;
3514 fc->low_water = 0x05048;
3515 fc->pause_time = 0x0650;
3516 fc->refresh_time = 0x0400;
3517 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3525 * Disable Adaptive Interrupt Moderation if 2 full packets cannot
3526 * fit in receive buffer.
3528 if (adapter->itr_setting & 0x3) {
3529 if ((adapter->max_frame_size * 2) > (pba << 10)) {
3530 if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) {
3531 dev_info(&adapter->pdev->dev,
3532 "Interrupt Throttle Rate turned off\n");
3533 adapter->flags2 |= FLAG2_DISABLE_AIM;
3536 } else if (adapter->flags2 & FLAG2_DISABLE_AIM) {
3537 dev_info(&adapter->pdev->dev,
3538 "Interrupt Throttle Rate turned on\n");
3539 adapter->flags2 &= ~FLAG2_DISABLE_AIM;
3540 adapter->itr = 20000;
3541 ew32(ITR, 1000000000 / (adapter->itr * 256));
3545 /* Allow time for pending master requests to run */
3546 mac->ops.reset_hw(hw);
3549 * For parts with AMT enabled, let the firmware know
3550 * that the network interface is in control
3552 if (adapter->flags & FLAG_HAS_AMT)
3553 e1000e_get_hw_control(adapter);
3557 if (mac->ops.init_hw(hw))
3558 e_err("Hardware Error\n");
3560 e1000_update_mng_vlan(adapter);
3562 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3563 ew32(VET, ETH_P_8021Q);
3565 e1000e_reset_adaptive(hw);
3567 if (!netif_running(adapter->netdev) &&
3568 !test_bit(__E1000_TESTING, &adapter->state)) {
3569 e1000_power_down_phy(adapter);
3573 e1000_get_phy_info(hw);
3575 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) &&
3576 !(adapter->flags & FLAG_SMART_POWER_DOWN)) {
3579 * speed up time to link by disabling smart power down, ignore
3580 * the return value of this function because there is nothing
3581 * different we would do if it failed
3583 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
3584 phy_data &= ~IGP02E1000_PM_SPD;
3585 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
3589 int e1000e_up(struct e1000_adapter *adapter)
3591 struct e1000_hw *hw = &adapter->hw;
3593 /* hardware has been reset, we need to reload some things */
3594 e1000_configure(adapter);
3596 clear_bit(__E1000_DOWN, &adapter->state);
3598 if (adapter->msix_entries)
3599 e1000_configure_msix(adapter);
3600 e1000_irq_enable(adapter);
3602 netif_start_queue(adapter->netdev);
3604 /* fire a link change interrupt to start the watchdog */
3605 if (adapter->msix_entries)
3606 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
3608 ew32(ICS, E1000_ICS_LSC);
3613 static void e1000e_flush_descriptors(struct e1000_adapter *adapter)
3615 struct e1000_hw *hw = &adapter->hw;
3617 if (!(adapter->flags2 & FLAG2_DMA_BURST))
3620 /* flush pending descriptor writebacks to memory */
3621 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
3622 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
3624 /* execute the writes immediately */
3628 * due to rare timing issues, write to TIDV/RDTR again to ensure the
3629 * write is successful
3631 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
3632 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
3634 /* execute the writes immediately */
3638 static void e1000e_update_stats(struct e1000_adapter *adapter);
3640 void e1000e_down(struct e1000_adapter *adapter)
3642 struct net_device *netdev = adapter->netdev;
3643 struct e1000_hw *hw = &adapter->hw;
3647 * signal that we're down so the interrupt handler does not
3648 * reschedule our watchdog timer
3650 set_bit(__E1000_DOWN, &adapter->state);
3652 /* disable receives in the hardware */
3654 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
3655 ew32(RCTL, rctl & ~E1000_RCTL_EN);
3656 /* flush and sleep below */
3658 netif_stop_queue(netdev);
3660 /* disable transmits in the hardware */
3662 tctl &= ~E1000_TCTL_EN;
3665 /* flush both disables and wait for them to finish */
3667 usleep_range(10000, 20000);
3669 e1000_irq_disable(adapter);
3671 del_timer_sync(&adapter->watchdog_timer);
3672 del_timer_sync(&adapter->phy_info_timer);
3674 netif_carrier_off(netdev);
3676 spin_lock(&adapter->stats64_lock);
3677 e1000e_update_stats(adapter);
3678 spin_unlock(&adapter->stats64_lock);
3680 e1000e_flush_descriptors(adapter);
3681 e1000_clean_tx_ring(adapter->tx_ring);
3682 e1000_clean_rx_ring(adapter->rx_ring);
3684 adapter->link_speed = 0;
3685 adapter->link_duplex = 0;
3687 if (!pci_channel_offline(adapter->pdev))
3688 e1000e_reset(adapter);
3691 * TODO: for power management, we could drop the link and
3692 * pci_disable_device here.
3696 void e1000e_reinit_locked(struct e1000_adapter *adapter)
3699 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
3700 usleep_range(1000, 2000);
3701 e1000e_down(adapter);
3703 clear_bit(__E1000_RESETTING, &adapter->state);
3707 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
3708 * @adapter: board private structure to initialize
3710 * e1000_sw_init initializes the Adapter private data structure.
3711 * Fields are initialized based on PCI device information and
3712 * OS network device settings (MTU size).
3714 static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
3716 struct net_device *netdev = adapter->netdev;
3718 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
3719 adapter->rx_ps_bsize0 = 128;
3720 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
3721 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
3722 adapter->tx_ring_count = E1000_DEFAULT_TXD;
3723 adapter->rx_ring_count = E1000_DEFAULT_RXD;
3725 spin_lock_init(&adapter->stats64_lock);
3727 e1000e_set_interrupt_capability(adapter);
3729 if (e1000_alloc_queues(adapter))
3732 /* Explicitly disable IRQ since the NIC can be in any state. */
3733 e1000_irq_disable(adapter);
3735 set_bit(__E1000_DOWN, &adapter->state);
3740 * e1000_intr_msi_test - Interrupt Handler
3741 * @irq: interrupt number
3742 * @data: pointer to a network interface device structure
3744 static irqreturn_t e1000_intr_msi_test(int irq, void *data)
3746 struct net_device *netdev = data;
3747 struct e1000_adapter *adapter = netdev_priv(netdev);
3748 struct e1000_hw *hw = &adapter->hw;
3749 u32 icr = er32(ICR);
3751 e_dbg("icr is %08X\n", icr);
3752 if (icr & E1000_ICR_RXSEQ) {
3753 adapter->flags &= ~FLAG_MSI_TEST_FAILED;
3761 * e1000_test_msi_interrupt - Returns 0 for successful test
3762 * @adapter: board private struct
3764 * code flow taken from tg3.c
3766 static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
3768 struct net_device *netdev = adapter->netdev;
3769 struct e1000_hw *hw = &adapter->hw;
3772 /* poll_enable hasn't been called yet, so don't need disable */
3773 /* clear any pending events */
3776 /* free the real vector and request a test handler */
3777 e1000_free_irq(adapter);
3778 e1000e_reset_interrupt_capability(adapter);
3780 /* Assume that the test fails, if it succeeds then the test
3781 * MSI irq handler will unset this flag */
3782 adapter->flags |= FLAG_MSI_TEST_FAILED;
3784 err = pci_enable_msi(adapter->pdev);
3786 goto msi_test_failed;
3788 err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0,
3789 netdev->name, netdev);
3791 pci_disable_msi(adapter->pdev);
3792 goto msi_test_failed;
3797 e1000_irq_enable(adapter);
3799 /* fire an unusual interrupt on the test handler */
3800 ew32(ICS, E1000_ICS_RXSEQ);
3804 e1000_irq_disable(adapter);
3808 if (adapter->flags & FLAG_MSI_TEST_FAILED) {
3809 adapter->int_mode = E1000E_INT_MODE_LEGACY;
3810 e_info("MSI interrupt test failed, using legacy interrupt.\n");
3812 e_dbg("MSI interrupt test succeeded!\n");
3815 free_irq(adapter->pdev->irq, netdev);
3816 pci_disable_msi(adapter->pdev);
3819 e1000e_set_interrupt_capability(adapter);
3820 return e1000_request_irq(adapter);
3824 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3825 * @adapter: board private struct
3827 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3829 static int e1000_test_msi(struct e1000_adapter *adapter)
3834 if (!(adapter->flags & FLAG_MSI_ENABLED))
3837 /* disable SERR in case the MSI write causes a master abort */
3838 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
3839 if (pci_cmd & PCI_COMMAND_SERR)
3840 pci_write_config_word(adapter->pdev, PCI_COMMAND,
3841 pci_cmd & ~PCI_COMMAND_SERR);
3843 err = e1000_test_msi_interrupt(adapter);
3845 /* re-enable SERR */
3846 if (pci_cmd & PCI_COMMAND_SERR) {
3847 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
3848 pci_cmd |= PCI_COMMAND_SERR;
3849 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);
3856 * e1000_open - Called when a network interface is made active
3857 * @netdev: network interface device structure
3859 * Returns 0 on success, negative value on failure
3861 * The open entry point is called when a network interface is made
3862 * active by the system (IFF_UP). At this point all resources needed
3863 * for transmit and receive operations are allocated, the interrupt
3864 * handler is registered with the OS, the watchdog timer is started,
3865 * and the stack is notified that the interface is ready.
3867 static int e1000_open(struct net_device *netdev)
3869 struct e1000_adapter *adapter = netdev_priv(netdev);
3870 struct e1000_hw *hw = &adapter->hw;
3871 struct pci_dev *pdev = adapter->pdev;
3874 /* disallow open during test */
3875 if (test_bit(__E1000_TESTING, &adapter->state))
3878 pm_runtime_get_sync(&pdev->dev);
3880 netif_carrier_off(netdev);
3882 /* allocate transmit descriptors */
3883 err = e1000e_setup_tx_resources(adapter->tx_ring);
3887 /* allocate receive descriptors */
3888 err = e1000e_setup_rx_resources(adapter->rx_ring);
3893 * If AMT is enabled, let the firmware know that the network
3894 * interface is now open and reset the part to a known state.
3896 if (adapter->flags & FLAG_HAS_AMT) {
3897 e1000e_get_hw_control(adapter);
3898 e1000e_reset(adapter);
3901 e1000e_power_up_phy(adapter);
3903 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
3904 if ((adapter->hw.mng_cookie.status &
3905 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
3906 e1000_update_mng_vlan(adapter);
3908 /* DMA latency requirement to workaround jumbo issue */
3909 if (adapter->hw.mac.type == e1000_pch2lan)
3910 pm_qos_add_request(&adapter->netdev->pm_qos_req,
3911 PM_QOS_CPU_DMA_LATENCY,
3912 PM_QOS_DEFAULT_VALUE);
3915 * before we allocate an interrupt, we must be ready to handle it.
3916 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3917 * as soon as we call pci_request_irq, so we have to setup our
3918 * clean_rx handler before we do so.
3920 e1000_configure(adapter);
3922 err = e1000_request_irq(adapter);
3927 * Work around PCIe errata with MSI interrupts causing some chipsets to
3928 * ignore e1000e MSI messages, which means we need to test our MSI
3931 if (adapter->int_mode != E1000E_INT_MODE_LEGACY) {
3932 err = e1000_test_msi(adapter);
3934 e_err("Interrupt allocation failed\n");
3939 /* From here on the code is the same as e1000e_up() */
3940 clear_bit(__E1000_DOWN, &adapter->state);
3942 napi_enable(&adapter->napi);
3944 e1000_irq_enable(adapter);
3946 adapter->tx_hang_recheck = false;
3947 netif_start_queue(netdev);
3949 adapter->idle_check = true;
3950 pm_runtime_put(&pdev->dev);
3952 /* fire a link status change interrupt to start the watchdog */
3953 if (adapter->msix_entries)
3954 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
3956 ew32(ICS, E1000_ICS_LSC);
3961 e1000e_release_hw_control(adapter);
3962 e1000_power_down_phy(adapter);
3963 e1000e_free_rx_resources(adapter->rx_ring);
3965 e1000e_free_tx_resources(adapter->tx_ring);
3967 e1000e_reset(adapter);
3968 pm_runtime_put_sync(&pdev->dev);
3974 * e1000_close - Disables a network interface
3975 * @netdev: network interface device structure
3977 * Returns 0, this is not allowed to fail
3979 * The close entry point is called when an interface is de-activated
3980 * by the OS. The hardware is still under the drivers control, but
3981 * needs to be disabled. A global MAC reset is issued to stop the
3982 * hardware, and all transmit and receive resources are freed.
3984 static int e1000_close(struct net_device *netdev)
3986 struct e1000_adapter *adapter = netdev_priv(netdev);
3987 struct pci_dev *pdev = adapter->pdev;
3988 int count = E1000_CHECK_RESET_COUNT;
3990 while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
3991 usleep_range(10000, 20000);
3993 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
3995 pm_runtime_get_sync(&pdev->dev);
3997 napi_disable(&adapter->napi);
3999 if (!test_bit(__E1000_DOWN, &adapter->state)) {
4000 e1000e_down(adapter);
4001 e1000_free_irq(adapter);
4003 e1000_power_down_phy(adapter);
4005 e1000e_free_tx_resources(adapter->tx_ring);
4006 e1000e_free_rx_resources(adapter->rx_ring);
4009 * kill manageability vlan ID if supported, but not if a vlan with
4010 * the same ID is registered on the host OS (let 8021q kill it)
4012 if (adapter->hw.mng_cookie.status &
4013 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)
4014 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
4017 * If AMT is enabled, let the firmware know that the network
4018 * interface is now closed
4020 if ((adapter->flags & FLAG_HAS_AMT) &&
4021 !test_bit(__E1000_TESTING, &adapter->state))
4022 e1000e_release_hw_control(adapter);
4024 if (adapter->hw.mac.type == e1000_pch2lan)
4025 pm_qos_remove_request(&adapter->netdev->pm_qos_req);
4027 pm_runtime_put_sync(&pdev->dev);
4032 * e1000_set_mac - Change the Ethernet Address of the NIC
4033 * @netdev: network interface device structure
4034 * @p: pointer to an address structure
4036 * Returns 0 on success, negative on failure
4038 static int e1000_set_mac(struct net_device *netdev, void *p)
4040 struct e1000_adapter *adapter = netdev_priv(netdev);
4041 struct sockaddr *addr = p;
4043 if (!is_valid_ether_addr(addr->sa_data))
4044 return -EADDRNOTAVAIL;
4046 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
4047 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
4049 e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
4051 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) {
4052 /* activate the work around */
4053 e1000e_set_laa_state_82571(&adapter->hw, 1);
4056 * Hold a copy of the LAA in RAR[14] This is done so that
4057 * between the time RAR[0] gets clobbered and the time it
4058 * gets fixed (in e1000_watchdog), the actual LAA is in one
4059 * of the RARs and no incoming packets directed to this port
4060 * are dropped. Eventually the LAA will be in RAR[0] and
4063 e1000e_rar_set(&adapter->hw,
4064 adapter->hw.mac.addr,
4065 adapter->hw.mac.rar_entry_count - 1);
4072 * e1000e_update_phy_task - work thread to update phy
4073 * @work: pointer to our work struct
4075 * this worker thread exists because we must acquire a
4076 * semaphore to read the phy, which we could msleep while
4077 * waiting for it, and we can't msleep in a timer.
4079 static void e1000e_update_phy_task(struct work_struct *work)
4081 struct e1000_adapter *adapter = container_of(work,
4082 struct e1000_adapter, update_phy_task);
4084 if (test_bit(__E1000_DOWN, &adapter->state))
4087 e1000_get_phy_info(&adapter->hw);
4091 * Need to wait a few seconds after link up to get diagnostic information from
4094 static void e1000_update_phy_info(unsigned long data)
4096 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
4098 if (test_bit(__E1000_DOWN, &adapter->state))
4101 schedule_work(&adapter->update_phy_task);
4105 * e1000e_update_phy_stats - Update the PHY statistics counters
4106 * @adapter: board private structure
4108 * Read/clear the upper 16-bit PHY registers and read/accumulate lower
4110 static void e1000e_update_phy_stats(struct e1000_adapter *adapter)
4112 struct e1000_hw *hw = &adapter->hw;
4116 ret_val = hw->phy.ops.acquire(hw);
4121 * A page set is expensive so check if already on desired page.
4122 * If not, set to the page with the PHY status registers.
4125 ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
4129 if (phy_data != (HV_STATS_PAGE << IGP_PAGE_SHIFT)) {
4130 ret_val = hw->phy.ops.set_page(hw,
4131 HV_STATS_PAGE << IGP_PAGE_SHIFT);
4136 /* Single Collision Count */
4137 hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data);
4138 ret_val = hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data);
4140 adapter->stats.scc += phy_data;
4142 /* Excessive Collision Count */
4143 hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data);
4144 ret_val = hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data);
4146 adapter->stats.ecol += phy_data;
4148 /* Multiple Collision Count */
4149 hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data);
4150 ret_val = hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data);
4152 adapter->stats.mcc += phy_data;
4154 /* Late Collision Count */
4155 hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data);
4156 ret_val = hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data);
4158 adapter->stats.latecol += phy_data;
4160 /* Collision Count - also used for adaptive IFS */
4161 hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data);
4162 ret_val = hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data);
4164 hw->mac.collision_delta = phy_data;
4167 hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data);
4168 ret_val = hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data);
4170 adapter->stats.dc += phy_data;
4172 /* Transmit with no CRS */
4173 hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data);
4174 ret_val = hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data);
4176 adapter->stats.tncrs += phy_data;
4179 hw->phy.ops.release(hw);
4183 * e1000e_update_stats - Update the board statistics counters
4184 * @adapter: board private structure
4186 static void e1000e_update_stats(struct e1000_adapter *adapter)
4188 struct net_device *netdev = adapter->netdev;
4189 struct e1000_hw *hw = &adapter->hw;
4190 struct pci_dev *pdev = adapter->pdev;
4193 * Prevent stats update while adapter is being reset, or if the pci
4194 * connection is down.
4196 if (adapter->link_speed == 0)
4198 if (pci_channel_offline(pdev))
4201 adapter->stats.crcerrs += er32(CRCERRS);
4202 adapter->stats.gprc += er32(GPRC);
4203 adapter->stats.gorc += er32(GORCL);
4204 er32(GORCH); /* Clear gorc */
4205 adapter->stats.bprc += er32(BPRC);
4206 adapter->stats.mprc += er32(MPRC);
4207 adapter->stats.roc += er32(ROC);
4209 adapter->stats.mpc += er32(MPC);
4211 /* Half-duplex statistics */
4212 if (adapter->link_duplex == HALF_DUPLEX) {
4213 if (adapter->flags2 & FLAG2_HAS_PHY_STATS) {
4214 e1000e_update_phy_stats(adapter);
4216 adapter->stats.scc += er32(SCC);
4217 adapter->stats.ecol += er32(ECOL);
4218 adapter->stats.mcc += er32(MCC);
4219 adapter->stats.latecol += er32(LATECOL);
4220 adapter->stats.dc += er32(DC);
4222 hw->mac.collision_delta = er32(COLC);
4224 if ((hw->mac.type != e1000_82574) &&
4225 (hw->mac.type != e1000_82583))
4226 adapter->stats.tncrs += er32(TNCRS);
4228 adapter->stats.colc += hw->mac.collision_delta;
4231 adapter->stats.xonrxc += er32(XONRXC);
4232 adapter->stats.xontxc += er32(XONTXC);
4233 adapter->stats.xoffrxc += er32(XOFFRXC);
4234 adapter->stats.xofftxc += er32(XOFFTXC);
4235 adapter->stats.gptc += er32(GPTC);
4236 adapter->stats.gotc += er32(GOTCL);
4237 er32(GOTCH); /* Clear gotc */
4238 adapter->stats.rnbc += er32(RNBC);
4239 adapter->stats.ruc += er32(RUC);
4241 adapter->stats.mptc += er32(MPTC);
4242 adapter->stats.bptc += er32(BPTC);
4244 /* used for adaptive IFS */
4246 hw->mac.tx_packet_delta = er32(TPT);
4247 adapter->stats.tpt += hw->mac.tx_packet_delta;
4249 adapter->stats.algnerrc += er32(ALGNERRC);
4250 adapter->stats.rxerrc += er32(RXERRC);
4251 adapter->stats.cexterr += er32(CEXTERR);
4252 adapter->stats.tsctc += er32(TSCTC);
4253 adapter->stats.tsctfc += er32(TSCTFC);
4255 /* Fill out the OS statistics structure */
4256 netdev->stats.multicast = adapter->stats.mprc;
4257 netdev->stats.collisions = adapter->stats.colc;
4262 * RLEC on some newer hardware can be incorrect so build
4263 * our own version based on RUC and ROC
4265 netdev->stats.rx_errors = adapter->stats.rxerrc +
4266 adapter->stats.crcerrs + adapter->stats.algnerrc +
4267 adapter->stats.ruc + adapter->stats.roc +
4268 adapter->stats.cexterr;
4269 netdev->stats.rx_length_errors = adapter->stats.ruc +
4271 netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
4272 netdev->stats.rx_frame_errors = adapter->stats.algnerrc;
4273 netdev->stats.rx_missed_errors = adapter->stats.mpc;
4276 netdev->stats.tx_errors = adapter->stats.ecol +
4277 adapter->stats.latecol;
4278 netdev->stats.tx_aborted_errors = adapter->stats.ecol;
4279 netdev->stats.tx_window_errors = adapter->stats.latecol;
4280 netdev->stats.tx_carrier_errors = adapter->stats.tncrs;
4282 /* Tx Dropped needs to be maintained elsewhere */
4284 /* Management Stats */
4285 adapter->stats.mgptc += er32(MGTPTC);
4286 adapter->stats.mgprc += er32(MGTPRC);
4287 adapter->stats.mgpdc += er32(MGTPDC);
4291 * e1000_phy_read_status - Update the PHY register status snapshot
4292 * @adapter: board private structure
4294 static void e1000_phy_read_status(struct e1000_adapter *adapter)
4296 struct e1000_hw *hw = &adapter->hw;
4297 struct e1000_phy_regs *phy = &adapter->phy_regs;
4299 if ((er32(STATUS) & E1000_STATUS_LU) &&
4300 (adapter->hw.phy.media_type == e1000_media_type_copper)) {
4303 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr);
4304 ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr);
4305 ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise);
4306 ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa);
4307 ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion);
4308 ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000);
4309 ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000);
4310 ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus);
4312 e_warn("Error reading PHY register\n");
4315 * Do not read PHY registers if link is not up
4316 * Set values to typical power-on defaults
4318 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX);
4319 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL |
4320 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE |
4322 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP |
4323 ADVERTISE_ALL | ADVERTISE_CSMA);
4325 phy->expansion = EXPANSION_ENABLENPAGE;
4326 phy->ctrl1000 = ADVERTISE_1000FULL;
4328 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF);
4332 static void e1000_print_link_info(struct e1000_adapter *adapter)
4334 struct e1000_hw *hw = &adapter->hw;
4335 u32 ctrl = er32(CTRL);
4337 /* Link status message must follow this format for user tools */
4338 printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n",
4339 adapter->netdev->name,
4340 adapter->link_speed,
4341 adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half",
4342 (ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE) ? "Rx/Tx" :
4343 (ctrl & E1000_CTRL_RFCE) ? "Rx" :
4344 (ctrl & E1000_CTRL_TFCE) ? "Tx" : "None");
4347 static bool e1000e_has_link(struct e1000_adapter *adapter)
4349 struct e1000_hw *hw = &adapter->hw;
4350 bool link_active = false;
4354 * get_link_status is set on LSC (link status) interrupt or
4355 * Rx sequence error interrupt. get_link_status will stay
4356 * false until the check_for_link establishes link
4357 * for copper adapters ONLY
4359 switch (hw->phy.media_type) {
4360 case e1000_media_type_copper:
4361 if (hw->mac.get_link_status) {
4362 ret_val = hw->mac.ops.check_for_link(hw);
4363 link_active = !hw->mac.get_link_status;
4368 case e1000_media_type_fiber:
4369 ret_val = hw->mac.ops.check_for_link(hw);
4370 link_active = !!(er32(STATUS) & E1000_STATUS_LU);
4372 case e1000_media_type_internal_serdes:
4373 ret_val = hw->mac.ops.check_for_link(hw);
4374 link_active = adapter->hw.mac.serdes_has_link;
4377 case e1000_media_type_unknown:
4381 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) &&
4382 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
4383 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
4384 e_info("Gigabit has been disabled, downgrading speed\n");
4390 static void e1000e_enable_receives(struct e1000_adapter *adapter)
4392 /* make sure the receive unit is started */
4393 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
4394 (adapter->flags & FLAG_RX_RESTART_NOW)) {
4395 struct e1000_hw *hw = &adapter->hw;
4396 u32 rctl = er32(RCTL);
4397 ew32(RCTL, rctl | E1000_RCTL_EN);
4398 adapter->flags &= ~FLAG_RX_RESTART_NOW;
4402 static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter)
4404 struct e1000_hw *hw = &adapter->hw;
4407 * With 82574 controllers, PHY needs to be checked periodically
4408 * for hung state and reset, if two calls return true
4410 if (e1000_check_phy_82574(hw))
4411 adapter->phy_hang_count++;
4413 adapter->phy_hang_count = 0;
4415 if (adapter->phy_hang_count > 1) {
4416 adapter->phy_hang_count = 0;
4417 schedule_work(&adapter->reset_task);
4422 * e1000_watchdog - Timer Call-back
4423 * @data: pointer to adapter cast into an unsigned long
4425 static void e1000_watchdog(unsigned long data)
4427 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
4429 /* Do the rest outside of interrupt context */
4430 schedule_work(&adapter->watchdog_task);
4432 /* TODO: make this use queue_delayed_work() */
4435 static void e1000_watchdog_task(struct work_struct *work)
4437 struct e1000_adapter *adapter = container_of(work,
4438 struct e1000_adapter, watchdog_task);
4439 struct net_device *netdev = adapter->netdev;
4440 struct e1000_mac_info *mac = &adapter->hw.mac;
4441 struct e1000_phy_info *phy = &adapter->hw.phy;
4442 struct e1000_ring *tx_ring = adapter->tx_ring;
4443 struct e1000_hw *hw = &adapter->hw;
4446 if (test_bit(__E1000_DOWN, &adapter->state))
4449 link = e1000e_has_link(adapter);
4450 if ((netif_carrier_ok(netdev)) && link) {
4451 /* Cancel scheduled suspend requests. */
4452 pm_runtime_resume(netdev->dev.parent);
4454 e1000e_enable_receives(adapter);
4458 if ((e1000e_enable_tx_pkt_filtering(hw)) &&
4459 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id))
4460 e1000_update_mng_vlan(adapter);
4463 if (!netif_carrier_ok(netdev)) {
4466 /* Cancel scheduled suspend requests. */
4467 pm_runtime_resume(netdev->dev.parent);
4469 /* update snapshot of PHY registers on LSC */
4470 e1000_phy_read_status(adapter);
4471 mac->ops.get_link_up_info(&adapter->hw,
4472 &adapter->link_speed,
4473 &adapter->link_duplex);
4474 e1000_print_link_info(adapter);
4476 * On supported PHYs, check for duplex mismatch only
4477 * if link has autonegotiated at 10/100 half
4479 if ((hw->phy.type == e1000_phy_igp_3 ||
4480 hw->phy.type == e1000_phy_bm) &&
4481 (hw->mac.autoneg == true) &&
4482 (adapter->link_speed == SPEED_10 ||
4483 adapter->link_speed == SPEED_100) &&
4484 (adapter->link_duplex == HALF_DUPLEX)) {
4487 e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp);
4489 if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS))
4490 e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n");
4493 /* adjust timeout factor according to speed/duplex */
4494 adapter->tx_timeout_factor = 1;
4495 switch (adapter->link_speed) {
4498 adapter->tx_timeout_factor = 16;
4502 adapter->tx_timeout_factor = 10;
4507 * workaround: re-program speed mode bit after
4510 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) &&
4513 tarc0 = er32(TARC(0));
4514 tarc0 &= ~SPEED_MODE_BIT;
4515 ew32(TARC(0), tarc0);
4519 * disable TSO for pcie and 10/100 speeds, to avoid
4520 * some hardware issues
4522 if (!(adapter->flags & FLAG_TSO_FORCE)) {
4523 switch (adapter->link_speed) {
4526 e_info("10/100 speed: disabling TSO\n");
4527 netdev->features &= ~NETIF_F_TSO;
4528 netdev->features &= ~NETIF_F_TSO6;
4531 netdev->features |= NETIF_F_TSO;
4532 netdev->features |= NETIF_F_TSO6;
4541 * enable transmits in the hardware, need to do this
4542 * after setting TARC(0)
4545 tctl |= E1000_TCTL_EN;
4549 * Perform any post-link-up configuration before
4550 * reporting link up.
4552 if (phy->ops.cfg_on_link_up)
4553 phy->ops.cfg_on_link_up(hw);
4555 netif_carrier_on(netdev);
4557 if (!test_bit(__E1000_DOWN, &adapter->state))
4558 mod_timer(&adapter->phy_info_timer,
4559 round_jiffies(jiffies + 2 * HZ));
4562 if (netif_carrier_ok(netdev)) {
4563 adapter->link_speed = 0;
4564 adapter->link_duplex = 0;
4565 /* Link status message must follow this format */
4566 printk(KERN_INFO "e1000e: %s NIC Link is Down\n",
4567 adapter->netdev->name);
4568 netif_carrier_off(netdev);
4569 if (!test_bit(__E1000_DOWN, &adapter->state))
4570 mod_timer(&adapter->phy_info_timer,
4571 round_jiffies(jiffies + 2 * HZ));
4573 if (adapter->flags & FLAG_RX_NEEDS_RESTART)
4574 schedule_work(&adapter->reset_task);
4576 pm_schedule_suspend(netdev->dev.parent,
4582 spin_lock(&adapter->stats64_lock);
4583 e1000e_update_stats(adapter);
4585 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
4586 adapter->tpt_old = adapter->stats.tpt;
4587 mac->collision_delta = adapter->stats.colc - adapter->colc_old;
4588 adapter->colc_old = adapter->stats.colc;
4590 adapter->gorc = adapter->stats.gorc - adapter->gorc_old;
4591 adapter->gorc_old = adapter->stats.gorc;
4592 adapter->gotc = adapter->stats.gotc - adapter->gotc_old;
4593 adapter->gotc_old = adapter->stats.gotc;
4594 spin_unlock(&adapter->stats64_lock);
4596 e1000e_update_adaptive(&adapter->hw);
4598 if (!netif_carrier_ok(netdev) &&
4599 (e1000_desc_unused(tx_ring) + 1 < tx_ring->count)) {
4601 * We've lost link, so the controller stops DMA,
4602 * but we've got queued Tx work that's never going
4603 * to get done, so reset controller to flush Tx.
4604 * (Do the reset outside of interrupt context).
4606 schedule_work(&adapter->reset_task);
4607 /* return immediately since reset is imminent */
4611 /* Simple mode for Interrupt Throttle Rate (ITR) */
4612 if (adapter->itr_setting == 4) {
4614 * Symmetric Tx/Rx gets a reduced ITR=2000;
4615 * Total asymmetrical Tx or Rx gets ITR=8000;
4616 * everyone else is between 2000-8000.
4618 u32 goc = (adapter->gotc + adapter->gorc) / 10000;
4619 u32 dif = (adapter->gotc > adapter->gorc ?
4620 adapter->gotc - adapter->gorc :
4621 adapter->gorc - adapter->gotc) / 10000;
4622 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
4624 ew32(ITR, 1000000000 / (itr * 256));
4627 /* Cause software interrupt to ensure Rx ring is cleaned */
4628 if (adapter->msix_entries)
4629 ew32(ICS, adapter->rx_ring->ims_val);
4631 ew32(ICS, E1000_ICS_RXDMT0);
4633 /* flush pending descriptors to memory before detecting Tx hang */
4634 e1000e_flush_descriptors(adapter);
4636 /* Force detection of hung controller every watchdog period */
4637 adapter->detect_tx_hung = true;
4640 * With 82571 controllers, LAA may be overwritten due to controller
4641 * reset from the other port. Set the appropriate LAA in RAR[0]
4643 if (e1000e_get_laa_state_82571(hw))
4644 e1000e_rar_set(hw, adapter->hw.mac.addr, 0);
4646 if (adapter->flags2 & FLAG2_CHECK_PHY_HANG)
4647 e1000e_check_82574_phy_workaround(adapter);
4649 /* Reset the timer */
4650 if (!test_bit(__E1000_DOWN, &adapter->state))
4651 mod_timer(&adapter->watchdog_timer,
4652 round_jiffies(jiffies + 2 * HZ));
4655 #define E1000_TX_FLAGS_CSUM 0x00000001
4656 #define E1000_TX_FLAGS_VLAN 0x00000002
4657 #define E1000_TX_FLAGS_TSO 0x00000004
4658 #define E1000_TX_FLAGS_IPV4 0x00000008
4659 #define E1000_TX_FLAGS_NO_FCS 0x00000010
4660 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
4661 #define E1000_TX_FLAGS_VLAN_SHIFT 16
4663 static int e1000_tso(struct e1000_ring *tx_ring, struct sk_buff *skb)
4665 struct e1000_context_desc *context_desc;
4666 struct e1000_buffer *buffer_info;
4669 u16 ipcse = 0, tucse, mss;
4670 u8 ipcss, ipcso, tucss, tucso, hdr_len;
4672 if (!skb_is_gso(skb))
4675 if (skb_header_cloned(skb)) {
4676 int err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
4682 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4683 mss = skb_shinfo(skb)->gso_size;
4684 if (skb->protocol == htons(ETH_P_IP)) {
4685 struct iphdr *iph = ip_hdr(skb);
4688 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
4690 cmd_length = E1000_TXD_CMD_IP;
4691 ipcse = skb_transport_offset(skb) - 1;
4692 } else if (skb_is_gso_v6(skb)) {
4693 ipv6_hdr(skb)->payload_len = 0;
4694 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
4695 &ipv6_hdr(skb)->daddr,
4699 ipcss = skb_network_offset(skb);
4700 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
4701 tucss = skb_transport_offset(skb);
4702 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
4705 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
4706 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
4708 i = tx_ring->next_to_use;
4709 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
4710 buffer_info = &tx_ring->buffer_info[i];
4712 context_desc->lower_setup.ip_fields.ipcss = ipcss;
4713 context_desc->lower_setup.ip_fields.ipcso = ipcso;
4714 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
4715 context_desc->upper_setup.tcp_fields.tucss = tucss;
4716 context_desc->upper_setup.tcp_fields.tucso = tucso;
4717 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
4718 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
4719 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
4720 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
4722 buffer_info->time_stamp = jiffies;
4723 buffer_info->next_to_watch = i;
4726 if (i == tx_ring->count)
4728 tx_ring->next_to_use = i;
4733 static bool e1000_tx_csum(struct e1000_ring *tx_ring, struct sk_buff *skb)
4735 struct e1000_adapter *adapter = tx_ring->adapter;
4736 struct e1000_context_desc *context_desc;
4737 struct e1000_buffer *buffer_info;
4740 u32 cmd_len = E1000_TXD_CMD_DEXT;
4743 if (skb->ip_summed != CHECKSUM_PARTIAL)
4746 if (skb->protocol == cpu_to_be16(ETH_P_8021Q))
4747 protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto;
4749 protocol = skb->protocol;
4752 case cpu_to_be16(ETH_P_IP):
4753 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
4754 cmd_len |= E1000_TXD_CMD_TCP;
4756 case cpu_to_be16(ETH_P_IPV6):
4757 /* XXX not handling all IPV6 headers */
4758 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
4759 cmd_len |= E1000_TXD_CMD_TCP;
4762 if (unlikely(net_ratelimit()))
4763 e_warn("checksum_partial proto=%x!\n",
4764 be16_to_cpu(protocol));
4768 css = skb_checksum_start_offset(skb);
4770 i = tx_ring->next_to_use;
4771 buffer_info = &tx_ring->buffer_info[i];
4772 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
4774 context_desc->lower_setup.ip_config = 0;
4775 context_desc->upper_setup.tcp_fields.tucss = css;
4776 context_desc->upper_setup.tcp_fields.tucso =
4777 css + skb->csum_offset;
4778 context_desc->upper_setup.tcp_fields.tucse = 0;
4779 context_desc->tcp_seg_setup.data = 0;
4780 context_desc->cmd_and_length = cpu_to_le32(cmd_len);
4782 buffer_info->time_stamp = jiffies;
4783 buffer_info->next_to_watch = i;
4786 if (i == tx_ring->count)
4788 tx_ring->next_to_use = i;
4793 #define E1000_MAX_PER_TXD 8192
4794 #define E1000_MAX_TXD_PWR 12
4796 static int e1000_tx_map(struct e1000_ring *tx_ring, struct sk_buff *skb,
4797 unsigned int first, unsigned int max_per_txd,
4798 unsigned int nr_frags, unsigned int mss)
4800 struct e1000_adapter *adapter = tx_ring->adapter;
4801 struct pci_dev *pdev = adapter->pdev;
4802 struct e1000_buffer *buffer_info;
4803 unsigned int len = skb_headlen(skb);
4804 unsigned int offset = 0, size, count = 0, i;
4805 unsigned int f, bytecount, segs;
4807 i = tx_ring->next_to_use;
4810 buffer_info = &tx_ring->buffer_info[i];
4811 size = min(len, max_per_txd);
4813 buffer_info->length = size;
4814 buffer_info->time_stamp = jiffies;
4815 buffer_info->next_to_watch = i;
4816 buffer_info->dma = dma_map_single(&pdev->dev,
4818 size, DMA_TO_DEVICE);
4819 buffer_info->mapped_as_page = false;
4820 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
4829 if (i == tx_ring->count)
4834 for (f = 0; f < nr_frags; f++) {
4835 const struct skb_frag_struct *frag;
4837 frag = &skb_shinfo(skb)->frags[f];
4838 len = skb_frag_size(frag);
4843 if (i == tx_ring->count)
4846 buffer_info = &tx_ring->buffer_info[i];
4847 size = min(len, max_per_txd);
4849 buffer_info->length = size;
4850 buffer_info->time_stamp = jiffies;
4851 buffer_info->next_to_watch = i;
4852 buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag,
4853 offset, size, DMA_TO_DEVICE);
4854 buffer_info->mapped_as_page = true;
4855 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
4864 segs = skb_shinfo(skb)->gso_segs ? : 1;
4865 /* multiply data chunks by size of headers */
4866 bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len;
4868 tx_ring->buffer_info[i].skb = skb;
4869 tx_ring->buffer_info[i].segs = segs;
4870 tx_ring->buffer_info[i].bytecount = bytecount;
4871 tx_ring->buffer_info[first].next_to_watch = i;
4876 dev_err(&pdev->dev, "Tx DMA map failed\n");
4877 buffer_info->dma = 0;
4883 i += tx_ring->count;
4885 buffer_info = &tx_ring->buffer_info[i];
4886 e1000_put_txbuf(tx_ring, buffer_info);
4892 static void e1000_tx_queue(struct e1000_ring *tx_ring, int tx_flags, int count)
4894 struct e1000_adapter *adapter = tx_ring->adapter;
4895 struct e1000_tx_desc *tx_desc = NULL;
4896 struct e1000_buffer *buffer_info;
4897 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
4900 if (tx_flags & E1000_TX_FLAGS_TSO) {
4901 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
4903 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
4905 if (tx_flags & E1000_TX_FLAGS_IPV4)
4906 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
4909 if (tx_flags & E1000_TX_FLAGS_CSUM) {
4910 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
4911 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
4914 if (tx_flags & E1000_TX_FLAGS_VLAN) {
4915 txd_lower |= E1000_TXD_CMD_VLE;
4916 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
4919 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
4920 txd_lower &= ~(E1000_TXD_CMD_IFCS);
4922 i = tx_ring->next_to_use;
4925 buffer_info = &tx_ring->buffer_info[i];
4926 tx_desc = E1000_TX_DESC(*tx_ring, i);
4927 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
4928 tx_desc->lower.data =
4929 cpu_to_le32(txd_lower | buffer_info->length);
4930 tx_desc->upper.data = cpu_to_le32(txd_upper);
4933 if (i == tx_ring->count)
4935 } while (--count > 0);
4937 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
4939 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */
4940 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
4941 tx_desc->lower.data &= ~(cpu_to_le32(E1000_TXD_CMD_IFCS));
4944 * Force memory writes to complete before letting h/w
4945 * know there are new descriptors to fetch. (Only
4946 * applicable for weak-ordered memory model archs,
4951 tx_ring->next_to_use = i;
4953 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
4954 e1000e_update_tdt_wa(tx_ring, i);
4956 writel(i, tx_ring->tail);
4959 * we need this if more than one processor can write to our tail
4960 * at a time, it synchronizes IO on IA64/Altix systems
4965 #define MINIMUM_DHCP_PACKET_SIZE 282
4966 static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
4967 struct sk_buff *skb)
4969 struct e1000_hw *hw = &adapter->hw;
4972 if (vlan_tx_tag_present(skb)) {
4973 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) &&
4974 (adapter->hw.mng_cookie.status &
4975 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
4979 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE)
4982 if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP))
4986 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14);
4989 if (ip->protocol != IPPROTO_UDP)
4992 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
4993 if (ntohs(udp->dest) != 67)
4996 offset = (u8 *)udp + 8 - skb->data;
4997 length = skb->len - offset;
4998 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length);
5004 static int __e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size)
5006 struct e1000_adapter *adapter = tx_ring->adapter;
5008 netif_stop_queue(adapter->netdev);
5010 * Herbert's original patch had:
5011 * smp_mb__after_netif_stop_queue();
5012 * but since that doesn't exist yet, just open code it.
5017 * We need to check again in a case another CPU has just
5018 * made room available.
5020 if (e1000_desc_unused(tx_ring) < size)
5024 netif_start_queue(adapter->netdev);
5025 ++adapter->restart_queue;
5029 static int e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size)
5031 if (e1000_desc_unused(tx_ring) >= size)
5033 return __e1000_maybe_stop_tx(tx_ring, size);
5036 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1)
5037 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
5038 struct net_device *netdev)
5040 struct e1000_adapter *adapter = netdev_priv(netdev);
5041 struct e1000_ring *tx_ring = adapter->tx_ring;
5043 unsigned int max_per_txd = E1000_MAX_PER_TXD;
5044 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
5045 unsigned int tx_flags = 0;
5046 unsigned int len = skb_headlen(skb);
5047 unsigned int nr_frags;
5053 if (test_bit(__E1000_DOWN, &adapter->state)) {
5054 dev_kfree_skb_any(skb);
5055 return NETDEV_TX_OK;
5058 if (skb->len <= 0) {
5059 dev_kfree_skb_any(skb);
5060 return NETDEV_TX_OK;
5063 mss = skb_shinfo(skb)->gso_size;
5065 * The controller does a simple calculation to
5066 * make sure there is enough room in the FIFO before
5067 * initiating the DMA for each buffer. The calc is:
5068 * 4 = ceil(buffer len/mss). To make sure we don't
5069 * overrun the FIFO, adjust the max buffer len if mss
5074 max_per_txd = min(mss << 2, max_per_txd);
5075 max_txd_pwr = fls(max_per_txd) - 1;
5078 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
5079 * points to just header, pull a few bytes of payload from
5080 * frags into skb->data
5082 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
5084 * we do this workaround for ES2LAN, but it is un-necessary,
5085 * avoiding it could save a lot of cycles
5087 if (skb->data_len && (hdr_len == len)) {
5088 unsigned int pull_size;
5090 pull_size = min_t(unsigned int, 4, skb->data_len);
5091 if (!__pskb_pull_tail(skb, pull_size)) {
5092 e_err("__pskb_pull_tail failed.\n");
5093 dev_kfree_skb_any(skb);
5094 return NETDEV_TX_OK;
5096 len = skb_headlen(skb);
5100 /* reserve a descriptor for the offload context */
5101 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
5105 count += TXD_USE_COUNT(len, max_txd_pwr);
5107 nr_frags = skb_shinfo(skb)->nr_frags;
5108 for (f = 0; f < nr_frags; f++)
5109 count += TXD_USE_COUNT(skb_frag_size(&skb_shinfo(skb)->frags[f]),
5112 if (adapter->hw.mac.tx_pkt_filtering)
5113 e1000_transfer_dhcp_info(adapter, skb);
5116 * need: count + 2 desc gap to keep tail from touching
5117 * head, otherwise try next time
5119 if (e1000_maybe_stop_tx(tx_ring, count + 2))
5120 return NETDEV_TX_BUSY;
5122 if (vlan_tx_tag_present(skb)) {
5123 tx_flags |= E1000_TX_FLAGS_VLAN;
5124 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
5127 first = tx_ring->next_to_use;
5129 tso = e1000_tso(tx_ring, skb);
5131 dev_kfree_skb_any(skb);
5132 return NETDEV_TX_OK;
5136 tx_flags |= E1000_TX_FLAGS_TSO;
5137 else if (e1000_tx_csum(tx_ring, skb))
5138 tx_flags |= E1000_TX_FLAGS_CSUM;
5141 * Old method was to assume IPv4 packet by default if TSO was enabled.
5142 * 82571 hardware supports TSO capabilities for IPv6 as well...
5143 * no longer assume, we must.
5145 if (skb->protocol == htons(ETH_P_IP))
5146 tx_flags |= E1000_TX_FLAGS_IPV4;
5148 if (unlikely(skb->no_fcs))
5149 tx_flags |= E1000_TX_FLAGS_NO_FCS;
5151 /* if count is 0 then mapping error has occurred */
5152 count = e1000_tx_map(tx_ring, skb, first, max_per_txd, nr_frags, mss);
5154 netdev_sent_queue(netdev, skb->len);
5155 e1000_tx_queue(tx_ring, tx_flags, count);
5156 /* Make sure there is space in the ring for the next send. */
5157 e1000_maybe_stop_tx(tx_ring, MAX_SKB_FRAGS + 2);
5160 dev_kfree_skb_any(skb);
5161 tx_ring->buffer_info[first].time_stamp = 0;
5162 tx_ring->next_to_use = first;
5165 return NETDEV_TX_OK;
5169 * e1000_tx_timeout - Respond to a Tx Hang
5170 * @netdev: network interface device structure
5172 static void e1000_tx_timeout(struct net_device *netdev)
5174 struct e1000_adapter *adapter = netdev_priv(netdev);
5176 /* Do the reset outside of interrupt context */
5177 adapter->tx_timeout_count++;
5178 schedule_work(&adapter->reset_task);
5181 static void e1000_reset_task(struct work_struct *work)
5183 struct e1000_adapter *adapter;
5184 adapter = container_of(work, struct e1000_adapter, reset_task);
5186 /* don't run the task if already down */
5187 if (test_bit(__E1000_DOWN, &adapter->state))
5190 if (!((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
5191 (adapter->flags & FLAG_RX_RESTART_NOW))) {
5192 e1000e_dump(adapter);
5193 e_err("Reset adapter\n");
5195 e1000e_reinit_locked(adapter);
5199 * e1000_get_stats64 - Get System Network Statistics
5200 * @netdev: network interface device structure
5201 * @stats: rtnl_link_stats64 pointer
5203 * Returns the address of the device statistics structure.
5205 struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev,
5206 struct rtnl_link_stats64 *stats)
5208 struct e1000_adapter *adapter = netdev_priv(netdev);
5210 memset(stats, 0, sizeof(struct rtnl_link_stats64));
5211 spin_lock(&adapter->stats64_lock);
5212 e1000e_update_stats(adapter);
5213 /* Fill out the OS statistics structure */
5214 stats->rx_bytes = adapter->stats.gorc;
5215 stats->rx_packets = adapter->stats.gprc;
5216 stats->tx_bytes = adapter->stats.gotc;
5217 stats->tx_packets = adapter->stats.gptc;
5218 stats->multicast = adapter->stats.mprc;
5219 stats->collisions = adapter->stats.colc;
5224 * RLEC on some newer hardware can be incorrect so build
5225 * our own version based on RUC and ROC
5227 stats->rx_errors = adapter->stats.rxerrc +
5228 adapter->stats.crcerrs + adapter->stats.algnerrc +
5229 adapter->stats.ruc + adapter->stats.roc +
5230 adapter->stats.cexterr;
5231 stats->rx_length_errors = adapter->stats.ruc +
5233 stats->rx_crc_errors = adapter->stats.crcerrs;
5234 stats->rx_frame_errors = adapter->stats.algnerrc;
5235 stats->rx_missed_errors = adapter->stats.mpc;
5238 stats->tx_errors = adapter->stats.ecol +
5239 adapter->stats.latecol;
5240 stats->tx_aborted_errors = adapter->stats.ecol;
5241 stats->tx_window_errors = adapter->stats.latecol;
5242 stats->tx_carrier_errors = adapter->stats.tncrs;
5244 /* Tx Dropped needs to be maintained elsewhere */
5246 spin_unlock(&adapter->stats64_lock);
5251 * e1000_change_mtu - Change the Maximum Transfer Unit
5252 * @netdev: network interface device structure
5253 * @new_mtu: new value for maximum frame size
5255 * Returns 0 on success, negative on failure
5257 static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
5259 struct e1000_adapter *adapter = netdev_priv(netdev);
5260 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
5262 /* Jumbo frame support */
5263 if (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) {
5264 if (!(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
5265 e_err("Jumbo Frames not supported.\n");
5270 * IP payload checksum (enabled with jumbos/packet-split when
5271 * Rx checksum is enabled) and generation of RSS hash is
5272 * mutually exclusive in the hardware.
5274 if ((netdev->features & NETIF_F_RXCSUM) &&
5275 (netdev->features & NETIF_F_RXHASH)) {
5276 e_err("Jumbo frames cannot be enabled when both receive checksum offload and receive hashing are enabled. Disable one of the receive offload features before enabling jumbos.\n");
5281 /* Supported frame sizes */
5282 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) ||
5283 (max_frame > adapter->max_hw_frame_size)) {
5284 e_err("Unsupported MTU setting\n");
5288 /* Jumbo frame workaround on 82579 requires CRC be stripped */
5289 if ((adapter->hw.mac.type == e1000_pch2lan) &&
5290 !(adapter->flags2 & FLAG2_CRC_STRIPPING) &&
5291 (new_mtu > ETH_DATA_LEN)) {
5292 e_err("Jumbo Frames not supported on 82579 when CRC stripping is disabled.\n");
5296 /* 82573 Errata 17 */
5297 if (((adapter->hw.mac.type == e1000_82573) ||
5298 (adapter->hw.mac.type == e1000_82574)) &&
5299 (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN)) {
5300 adapter->flags2 |= FLAG2_DISABLE_ASPM_L1;
5301 e1000e_disable_aspm(adapter->pdev, PCIE_LINK_STATE_L1);
5304 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
5305 usleep_range(1000, 2000);
5306 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
5307 adapter->max_frame_size = max_frame;
5308 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu);
5309 netdev->mtu = new_mtu;
5310 if (netif_running(netdev))
5311 e1000e_down(adapter);
5314 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
5315 * means we reserve 2 more, this pushes us to allocate from the next
5317 * i.e. RXBUFFER_2048 --> size-4096 slab
5318 * However with the new *_jumbo_rx* routines, jumbo receives will use
5322 if (max_frame <= 2048)
5323 adapter->rx_buffer_len = 2048;
5325 adapter->rx_buffer_len = 4096;
5327 /* adjust allocation if LPE protects us, and we aren't using SBP */
5328 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
5329 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
5330 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN
5333 if (netif_running(netdev))
5336 e1000e_reset(adapter);
5338 clear_bit(__E1000_RESETTING, &adapter->state);
5343 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
5346 struct e1000_adapter *adapter = netdev_priv(netdev);
5347 struct mii_ioctl_data *data = if_mii(ifr);
5349 if (adapter->hw.phy.media_type != e1000_media_type_copper)
5354 data->phy_id = adapter->hw.phy.addr;
5357 e1000_phy_read_status(adapter);
5359 switch (data->reg_num & 0x1F) {
5361 data->val_out = adapter->phy_regs.bmcr;
5364 data->val_out = adapter->phy_regs.bmsr;
5367 data->val_out = (adapter->hw.phy.id >> 16);
5370 data->val_out = (adapter->hw.phy.id & 0xFFFF);
5373 data->val_out = adapter->phy_regs.advertise;
5376 data->val_out = adapter->phy_regs.lpa;
5379 data->val_out = adapter->phy_regs.expansion;
5382 data->val_out = adapter->phy_regs.ctrl1000;
5385 data->val_out = adapter->phy_regs.stat1000;
5388 data->val_out = adapter->phy_regs.estatus;
5401 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
5407 return e1000_mii_ioctl(netdev, ifr, cmd);
5413 static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc)
5415 struct e1000_hw *hw = &adapter->hw;
5417 u16 phy_reg, wuc_enable;
5420 /* copy MAC RARs to PHY RARs */
5421 e1000_copy_rx_addrs_to_phy_ich8lan(hw);
5423 retval = hw->phy.ops.acquire(hw);
5425 e_err("Could not acquire PHY\n");
5429 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */
5430 retval = e1000_enable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
5434 /* copy MAC MTA to PHY MTA - only needed for pchlan */
5435 for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) {
5436 mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i);
5437 hw->phy.ops.write_reg_page(hw, BM_MTA(i),
5438 (u16)(mac_reg & 0xFFFF));
5439 hw->phy.ops.write_reg_page(hw, BM_MTA(i) + 1,
5440 (u16)((mac_reg >> 16) & 0xFFFF));
5443 /* configure PHY Rx Control register */
5444 hw->phy.ops.read_reg_page(&adapter->hw, BM_RCTL, &phy_reg);
5445 mac_reg = er32(RCTL);
5446 if (mac_reg & E1000_RCTL_UPE)
5447 phy_reg |= BM_RCTL_UPE;
5448 if (mac_reg & E1000_RCTL_MPE)
5449 phy_reg |= BM_RCTL_MPE;
5450 phy_reg &= ~(BM_RCTL_MO_MASK);
5451 if (mac_reg & E1000_RCTL_MO_3)
5452 phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT)
5453 << BM_RCTL_MO_SHIFT);
5454 if (mac_reg & E1000_RCTL_BAM)
5455 phy_reg |= BM_RCTL_BAM;
5456 if (mac_reg & E1000_RCTL_PMCF)
5457 phy_reg |= BM_RCTL_PMCF;
5458 mac_reg = er32(CTRL);
5459 if (mac_reg & E1000_CTRL_RFCE)
5460 phy_reg |= BM_RCTL_RFCE;
5461 hw->phy.ops.write_reg_page(&adapter->hw, BM_RCTL, phy_reg);
5463 /* enable PHY wakeup in MAC register */
5465 ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN);
5467 /* configure and enable PHY wakeup in PHY registers */
5468 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUFC, wufc);
5469 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUC, E1000_WUC_PME_EN);
5471 /* activate PHY wakeup */
5472 wuc_enable |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT;
5473 retval = e1000_disable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
5475 e_err("Could not set PHY Host Wakeup bit\n");
5477 hw->phy.ops.release(hw);
5482 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake,
5485 struct net_device *netdev = pci_get_drvdata(pdev);
5486 struct e1000_adapter *adapter = netdev_priv(netdev);
5487 struct e1000_hw *hw = &adapter->hw;
5488 u32 ctrl, ctrl_ext, rctl, status;
5489 /* Runtime suspend should only enable wakeup for link changes */
5490 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol;
5493 netif_device_detach(netdev);
5495 if (netif_running(netdev)) {
5496 int count = E1000_CHECK_RESET_COUNT;
5498 while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
5499 usleep_range(10000, 20000);
5501 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
5502 e1000e_down(adapter);
5503 e1000_free_irq(adapter);
5505 e1000e_reset_interrupt_capability(adapter);
5507 retval = pci_save_state(pdev);
5511 status = er32(STATUS);
5512 if (status & E1000_STATUS_LU)
5513 wufc &= ~E1000_WUFC_LNKC;
5516 e1000_setup_rctl(adapter);
5517 e1000e_set_rx_mode(netdev);
5519 /* turn on all-multi mode if wake on multicast is enabled */
5520 if (wufc & E1000_WUFC_MC) {
5522 rctl |= E1000_RCTL_MPE;
5527 /* advertise wake from D3Cold */
5528 #define E1000_CTRL_ADVD3WUC 0x00100000
5529 /* phy power management enable */
5530 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5531 ctrl |= E1000_CTRL_ADVD3WUC;
5532 if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP))
5533 ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT;
5536 if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
5537 adapter->hw.phy.media_type ==
5538 e1000_media_type_internal_serdes) {
5539 /* keep the laser running in D3 */
5540 ctrl_ext = er32(CTRL_EXT);
5541 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA;
5542 ew32(CTRL_EXT, ctrl_ext);
5545 if (adapter->flags & FLAG_IS_ICH)
5546 e1000_suspend_workarounds_ich8lan(&adapter->hw);
5548 /* Allow time for pending master requests to run */
5549 e1000e_disable_pcie_master(&adapter->hw);
5551 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
5552 /* enable wakeup by the PHY */
5553 retval = e1000_init_phy_wakeup(adapter, wufc);
5557 /* enable wakeup by the MAC */
5559 ew32(WUC, E1000_WUC_PME_EN);
5566 *enable_wake = !!wufc;
5568 /* make sure adapter isn't asleep if manageability is enabled */
5569 if ((adapter->flags & FLAG_MNG_PT_ENABLED) ||
5570 (hw->mac.ops.check_mng_mode(hw)))
5571 *enable_wake = true;
5573 if (adapter->hw.phy.type == e1000_phy_igp_3)
5574 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw);
5577 * Release control of h/w to f/w. If f/w is AMT enabled, this
5578 * would have already happened in close and is redundant.
5580 e1000e_release_hw_control(adapter);
5582 pci_disable_device(pdev);
5587 static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake)
5589 if (sleep && wake) {
5590 pci_prepare_to_sleep(pdev);
5594 pci_wake_from_d3(pdev, wake);
5595 pci_set_power_state(pdev, PCI_D3hot);
5598 static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep,
5601 struct net_device *netdev = pci_get_drvdata(pdev);
5602 struct e1000_adapter *adapter = netdev_priv(netdev);
5605 * The pci-e switch on some quad port adapters will report a
5606 * correctable error when the MAC transitions from D0 to D3. To
5607 * prevent this we need to mask off the correctable errors on the
5608 * downstream port of the pci-e switch.
5610 if (adapter->flags & FLAG_IS_QUAD_PORT) {
5611 struct pci_dev *us_dev = pdev->bus->self;
5612 int pos = pci_pcie_cap(us_dev);
5615 pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl);
5616 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL,
5617 (devctl & ~PCI_EXP_DEVCTL_CERE));
5619 e1000_power_off(pdev, sleep, wake);
5621 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl);
5623 e1000_power_off(pdev, sleep, wake);
5627 #ifdef CONFIG_PCIEASPM
5628 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
5630 pci_disable_link_state_locked(pdev, state);
5633 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
5639 * Both device and parent should have the same ASPM setting.
5640 * Disable ASPM in downstream component first and then upstream.
5642 pos = pci_pcie_cap(pdev);
5643 pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, ®16);
5645 pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16);
5647 if (!pdev->bus->self)
5650 pos = pci_pcie_cap(pdev->bus->self);
5651 pci_read_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, ®16);
5653 pci_write_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, reg16);
5656 static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
5658 dev_info(&pdev->dev, "Disabling ASPM %s %s\n",
5659 (state & PCIE_LINK_STATE_L0S) ? "L0s" : "",
5660 (state & PCIE_LINK_STATE_L1) ? "L1" : "");
5662 __e1000e_disable_aspm(pdev, state);
5666 static bool e1000e_pm_ready(struct e1000_adapter *adapter)
5668 return !!adapter->tx_ring->buffer_info;
5671 static int __e1000_resume(struct pci_dev *pdev)
5673 struct net_device *netdev = pci_get_drvdata(pdev);
5674 struct e1000_adapter *adapter = netdev_priv(netdev);
5675 struct e1000_hw *hw = &adapter->hw;
5676 u16 aspm_disable_flag = 0;
5679 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
5680 aspm_disable_flag = PCIE_LINK_STATE_L0S;
5681 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
5682 aspm_disable_flag |= PCIE_LINK_STATE_L1;
5683 if (aspm_disable_flag)
5684 e1000e_disable_aspm(pdev, aspm_disable_flag);
5686 pci_set_power_state(pdev, PCI_D0);
5687 pci_restore_state(pdev);
5688 pci_save_state(pdev);
5690 e1000e_set_interrupt_capability(adapter);
5691 if (netif_running(netdev)) {
5692 err = e1000_request_irq(adapter);
5697 if (hw->mac.type == e1000_pch2lan)
5698 e1000_resume_workarounds_pchlan(&adapter->hw);
5700 e1000e_power_up_phy(adapter);
5702 /* report the system wakeup cause from S3/S4 */
5703 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
5706 e1e_rphy(&adapter->hw, BM_WUS, &phy_data);
5708 e_info("PHY Wakeup cause - %s\n",
5709 phy_data & E1000_WUS_EX ? "Unicast Packet" :
5710 phy_data & E1000_WUS_MC ? "Multicast Packet" :
5711 phy_data & E1000_WUS_BC ? "Broadcast Packet" :
5712 phy_data & E1000_WUS_MAG ? "Magic Packet" :
5713 phy_data & E1000_WUS_LNKC ?
5714 "Link Status Change" : "other");
5716 e1e_wphy(&adapter->hw, BM_WUS, ~0);
5718 u32 wus = er32(WUS);
5720 e_info("MAC Wakeup cause - %s\n",
5721 wus & E1000_WUS_EX ? "Unicast Packet" :
5722 wus & E1000_WUS_MC ? "Multicast Packet" :
5723 wus & E1000_WUS_BC ? "Broadcast Packet" :
5724 wus & E1000_WUS_MAG ? "Magic Packet" :
5725 wus & E1000_WUS_LNKC ? "Link Status Change" :
5731 e1000e_reset(adapter);
5733 e1000_init_manageability_pt(adapter);
5735 if (netif_running(netdev))
5738 netif_device_attach(netdev);
5741 * If the controller has AMT, do not set DRV_LOAD until the interface
5742 * is up. For all other cases, let the f/w know that the h/w is now
5743 * under the control of the driver.
5745 if (!(adapter->flags & FLAG_HAS_AMT))
5746 e1000e_get_hw_control(adapter);
5751 #ifdef CONFIG_PM_SLEEP
5752 static int e1000_suspend(struct device *dev)
5754 struct pci_dev *pdev = to_pci_dev(dev);
5758 retval = __e1000_shutdown(pdev, &wake, false);
5760 e1000_complete_shutdown(pdev, true, wake);
5765 static int e1000_resume(struct device *dev)
5767 struct pci_dev *pdev = to_pci_dev(dev);
5768 struct net_device *netdev = pci_get_drvdata(pdev);
5769 struct e1000_adapter *adapter = netdev_priv(netdev);
5771 if (e1000e_pm_ready(adapter))
5772 adapter->idle_check = true;
5774 return __e1000_resume(pdev);
5776 #endif /* CONFIG_PM_SLEEP */
5778 #ifdef CONFIG_PM_RUNTIME
5779 static int e1000_runtime_suspend(struct device *dev)
5781 struct pci_dev *pdev = to_pci_dev(dev);
5782 struct net_device *netdev = pci_get_drvdata(pdev);
5783 struct e1000_adapter *adapter = netdev_priv(netdev);
5785 if (e1000e_pm_ready(adapter)) {
5788 __e1000_shutdown(pdev, &wake, true);
5794 static int e1000_idle(struct device *dev)
5796 struct pci_dev *pdev = to_pci_dev(dev);
5797 struct net_device *netdev = pci_get_drvdata(pdev);
5798 struct e1000_adapter *adapter = netdev_priv(netdev);
5800 if (!e1000e_pm_ready(adapter))
5803 if (adapter->idle_check) {
5804 adapter->idle_check = false;
5805 if (!e1000e_has_link(adapter))
5806 pm_schedule_suspend(dev, MSEC_PER_SEC);
5812 static int e1000_runtime_resume(struct device *dev)
5814 struct pci_dev *pdev = to_pci_dev(dev);
5815 struct net_device *netdev = pci_get_drvdata(pdev);
5816 struct e1000_adapter *adapter = netdev_priv(netdev);
5818 if (!e1000e_pm_ready(adapter))
5821 adapter->idle_check = !dev->power.runtime_auto;
5822 return __e1000_resume(pdev);
5824 #endif /* CONFIG_PM_RUNTIME */
5825 #endif /* CONFIG_PM */
5827 static void e1000_shutdown(struct pci_dev *pdev)
5831 __e1000_shutdown(pdev, &wake, false);
5833 if (system_state == SYSTEM_POWER_OFF)
5834 e1000_complete_shutdown(pdev, false, wake);
5837 #ifdef CONFIG_NET_POLL_CONTROLLER
5839 static irqreturn_t e1000_intr_msix(int irq, void *data)
5841 struct net_device *netdev = data;
5842 struct e1000_adapter *adapter = netdev_priv(netdev);
5844 if (adapter->msix_entries) {
5845 int vector, msix_irq;
5848 msix_irq = adapter->msix_entries[vector].vector;
5849 disable_irq(msix_irq);
5850 e1000_intr_msix_rx(msix_irq, netdev);
5851 enable_irq(msix_irq);
5854 msix_irq = adapter->msix_entries[vector].vector;
5855 disable_irq(msix_irq);
5856 e1000_intr_msix_tx(msix_irq, netdev);
5857 enable_irq(msix_irq);
5860 msix_irq = adapter->msix_entries[vector].vector;
5861 disable_irq(msix_irq);
5862 e1000_msix_other(msix_irq, netdev);
5863 enable_irq(msix_irq);
5870 * Polling 'interrupt' - used by things like netconsole to send skbs
5871 * without having to re-enable interrupts. It's not called while
5872 * the interrupt routine is executing.
5874 static void e1000_netpoll(struct net_device *netdev)
5876 struct e1000_adapter *adapter = netdev_priv(netdev);
5878 switch (adapter->int_mode) {
5879 case E1000E_INT_MODE_MSIX:
5880 e1000_intr_msix(adapter->pdev->irq, netdev);
5882 case E1000E_INT_MODE_MSI:
5883 disable_irq(adapter->pdev->irq);
5884 e1000_intr_msi(adapter->pdev->irq, netdev);
5885 enable_irq(adapter->pdev->irq);
5887 default: /* E1000E_INT_MODE_LEGACY */
5888 disable_irq(adapter->pdev->irq);
5889 e1000_intr(adapter->pdev->irq, netdev);
5890 enable_irq(adapter->pdev->irq);
5897 * e1000_io_error_detected - called when PCI error is detected
5898 * @pdev: Pointer to PCI device
5899 * @state: The current pci connection state
5901 * This function is called after a PCI bus error affecting
5902 * this device has been detected.
5904 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
5905 pci_channel_state_t state)
5907 struct net_device *netdev = pci_get_drvdata(pdev);
5908 struct e1000_adapter *adapter = netdev_priv(netdev);
5910 netif_device_detach(netdev);
5912 if (state == pci_channel_io_perm_failure)
5913 return PCI_ERS_RESULT_DISCONNECT;
5915 if (netif_running(netdev))
5916 e1000e_down(adapter);
5917 pci_disable_device(pdev);
5919 /* Request a slot slot reset. */
5920 return PCI_ERS_RESULT_NEED_RESET;
5924 * e1000_io_slot_reset - called after the pci bus has been reset.
5925 * @pdev: Pointer to PCI device
5927 * Restart the card from scratch, as if from a cold-boot. Implementation
5928 * resembles the first-half of the e1000_resume routine.
5930 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
5932 struct net_device *netdev = pci_get_drvdata(pdev);
5933 struct e1000_adapter *adapter = netdev_priv(netdev);
5934 struct e1000_hw *hw = &adapter->hw;
5935 u16 aspm_disable_flag = 0;
5937 pci_ers_result_t result;
5939 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
5940 aspm_disable_flag = PCIE_LINK_STATE_L0S;
5941 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
5942 aspm_disable_flag |= PCIE_LINK_STATE_L1;
5943 if (aspm_disable_flag)
5944 e1000e_disable_aspm(pdev, aspm_disable_flag);
5946 err = pci_enable_device_mem(pdev);
5949 "Cannot re-enable PCI device after reset.\n");
5950 result = PCI_ERS_RESULT_DISCONNECT;
5952 pci_set_master(pdev);
5953 pdev->state_saved = true;
5954 pci_restore_state(pdev);
5956 pci_enable_wake(pdev, PCI_D3hot, 0);
5957 pci_enable_wake(pdev, PCI_D3cold, 0);
5959 e1000e_reset(adapter);
5961 result = PCI_ERS_RESULT_RECOVERED;
5964 pci_cleanup_aer_uncorrect_error_status(pdev);
5970 * e1000_io_resume - called when traffic can start flowing again.
5971 * @pdev: Pointer to PCI device
5973 * This callback is called when the error recovery driver tells us that
5974 * its OK to resume normal operation. Implementation resembles the
5975 * second-half of the e1000_resume routine.
5977 static void e1000_io_resume(struct pci_dev *pdev)
5979 struct net_device *netdev = pci_get_drvdata(pdev);
5980 struct e1000_adapter *adapter = netdev_priv(netdev);
5982 e1000_init_manageability_pt(adapter);
5984 if (netif_running(netdev)) {
5985 if (e1000e_up(adapter)) {
5987 "can't bring device back up after reset\n");
5992 netif_device_attach(netdev);
5995 * If the controller has AMT, do not set DRV_LOAD until the interface
5996 * is up. For all other cases, let the f/w know that the h/w is now
5997 * under the control of the driver.
5999 if (!(adapter->flags & FLAG_HAS_AMT))
6000 e1000e_get_hw_control(adapter);
6004 static void e1000_print_device_info(struct e1000_adapter *adapter)
6006 struct e1000_hw *hw = &adapter->hw;
6007 struct net_device *netdev = adapter->netdev;
6009 u8 pba_str[E1000_PBANUM_LENGTH];
6011 /* print bus type/speed/width info */
6012 e_info("(PCI Express:2.5GT/s:%s) %pM\n",
6014 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
6018 e_info("Intel(R) PRO/%s Network Connection\n",
6019 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000");
6020 ret_val = e1000_read_pba_string_generic(hw, pba_str,
6021 E1000_PBANUM_LENGTH);
6023 strlcpy((char *)pba_str, "Unknown", sizeof(pba_str));
6024 e_info("MAC: %d, PHY: %d, PBA No: %s\n",
6025 hw->mac.type, hw->phy.type, pba_str);
6028 static void e1000_eeprom_checks(struct e1000_adapter *adapter)
6030 struct e1000_hw *hw = &adapter->hw;
6034 if (hw->mac.type != e1000_82573)
6037 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf);
6039 if (!ret_val && (!(buf & (1 << 0)))) {
6040 /* Deep Smart Power Down (DSPD) */
6041 dev_warn(&adapter->pdev->dev,
6042 "Warning: detected DSPD enabled in EEPROM\n");
6046 static int e1000_set_features(struct net_device *netdev,
6047 netdev_features_t features)
6049 struct e1000_adapter *adapter = netdev_priv(netdev);
6050 netdev_features_t changed = features ^ netdev->features;
6052 if (changed & (NETIF_F_TSO | NETIF_F_TSO6))
6053 adapter->flags |= FLAG_TSO_FORCE;
6055 if (!(changed & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX |
6056 NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_RXFCS |
6061 * IP payload checksum (enabled with jumbos/packet-split when Rx
6062 * checksum is enabled) and generation of RSS hash is mutually
6063 * exclusive in the hardware.
6065 if (adapter->rx_ps_pages &&
6066 (features & NETIF_F_RXCSUM) && (features & NETIF_F_RXHASH)) {
6067 e_err("Enabling both receive checksum offload and receive hashing is not possible with jumbo frames. Disable jumbos or enable only one of the receive offload features.\n");
6071 if (changed & NETIF_F_RXFCS) {
6072 if (features & NETIF_F_RXFCS) {
6073 adapter->flags2 &= ~FLAG2_CRC_STRIPPING;
6075 /* We need to take it back to defaults, which might mean
6076 * stripping is still disabled at the adapter level.
6078 if (adapter->flags2 & FLAG2_DFLT_CRC_STRIPPING)
6079 adapter->flags2 |= FLAG2_CRC_STRIPPING;
6081 adapter->flags2 &= ~FLAG2_CRC_STRIPPING;
6085 netdev->features = features;
6087 if (netif_running(netdev))
6088 e1000e_reinit_locked(adapter);
6090 e1000e_reset(adapter);
6095 static const struct net_device_ops e1000e_netdev_ops = {
6096 .ndo_open = e1000_open,
6097 .ndo_stop = e1000_close,
6098 .ndo_start_xmit = e1000_xmit_frame,
6099 .ndo_get_stats64 = e1000e_get_stats64,
6100 .ndo_set_rx_mode = e1000e_set_rx_mode,
6101 .ndo_set_mac_address = e1000_set_mac,
6102 .ndo_change_mtu = e1000_change_mtu,
6103 .ndo_do_ioctl = e1000_ioctl,
6104 .ndo_tx_timeout = e1000_tx_timeout,
6105 .ndo_validate_addr = eth_validate_addr,
6107 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid,
6108 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid,
6109 #ifdef CONFIG_NET_POLL_CONTROLLER
6110 .ndo_poll_controller = e1000_netpoll,
6112 .ndo_set_features = e1000_set_features,
6116 * e1000_probe - Device Initialization Routine
6117 * @pdev: PCI device information struct
6118 * @ent: entry in e1000_pci_tbl
6120 * Returns 0 on success, negative on failure
6122 * e1000_probe initializes an adapter identified by a pci_dev structure.
6123 * The OS initialization, configuring of the adapter private structure,
6124 * and a hardware reset occur.
6126 static int __devinit e1000_probe(struct pci_dev *pdev,
6127 const struct pci_device_id *ent)
6129 struct net_device *netdev;
6130 struct e1000_adapter *adapter;
6131 struct e1000_hw *hw;
6132 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data];
6133 resource_size_t mmio_start, mmio_len;
6134 resource_size_t flash_start, flash_len;
6135 static int cards_found;
6136 u16 aspm_disable_flag = 0;
6137 int i, err, pci_using_dac;
6138 u16 eeprom_data = 0;
6139 u16 eeprom_apme_mask = E1000_EEPROM_APME;
6141 if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S)
6142 aspm_disable_flag = PCIE_LINK_STATE_L0S;
6143 if (ei->flags2 & FLAG2_DISABLE_ASPM_L1)
6144 aspm_disable_flag |= PCIE_LINK_STATE_L1;
6145 if (aspm_disable_flag)
6146 e1000e_disable_aspm(pdev, aspm_disable_flag);
6148 err = pci_enable_device_mem(pdev);
6153 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
6155 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
6159 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
6161 err = dma_set_coherent_mask(&pdev->dev,
6164 dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
6170 err = pci_request_selected_regions_exclusive(pdev,
6171 pci_select_bars(pdev, IORESOURCE_MEM),
6172 e1000e_driver_name);
6176 /* AER (Advanced Error Reporting) hooks */
6177 pci_enable_pcie_error_reporting(pdev);
6179 pci_set_master(pdev);
6180 /* PCI config space info */
6181 err = pci_save_state(pdev);
6183 goto err_alloc_etherdev;
6186 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
6188 goto err_alloc_etherdev;
6190 SET_NETDEV_DEV(netdev, &pdev->dev);
6192 netdev->irq = pdev->irq;
6194 pci_set_drvdata(pdev, netdev);
6195 adapter = netdev_priv(netdev);
6197 adapter->netdev = netdev;
6198 adapter->pdev = pdev;
6200 adapter->pba = ei->pba;
6201 adapter->flags = ei->flags;
6202 adapter->flags2 = ei->flags2;
6203 adapter->hw.adapter = adapter;
6204 adapter->hw.mac.type = ei->mac;
6205 adapter->max_hw_frame_size = ei->max_hw_frame_size;
6206 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
6208 mmio_start = pci_resource_start(pdev, 0);
6209 mmio_len = pci_resource_len(pdev, 0);
6212 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
6213 if (!adapter->hw.hw_addr)
6216 if ((adapter->flags & FLAG_HAS_FLASH) &&
6217 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
6218 flash_start = pci_resource_start(pdev, 1);
6219 flash_len = pci_resource_len(pdev, 1);
6220 adapter->hw.flash_address = ioremap(flash_start, flash_len);
6221 if (!adapter->hw.flash_address)
6225 /* construct the net_device struct */
6226 netdev->netdev_ops = &e1000e_netdev_ops;
6227 e1000e_set_ethtool_ops(netdev);
6228 netdev->watchdog_timeo = 5 * HZ;
6229 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
6230 strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name));
6232 netdev->mem_start = mmio_start;
6233 netdev->mem_end = mmio_start + mmio_len;
6235 adapter->bd_number = cards_found++;
6237 e1000e_check_options(adapter);
6239 /* setup adapter struct */
6240 err = e1000_sw_init(adapter);
6244 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
6245 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
6246 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
6248 err = ei->get_variants(adapter);
6252 if ((adapter->flags & FLAG_IS_ICH) &&
6253 (adapter->flags & FLAG_READ_ONLY_NVM))
6254 e1000e_write_protect_nvm_ich8lan(&adapter->hw);
6256 hw->mac.ops.get_bus_info(&adapter->hw);
6258 adapter->hw.phy.autoneg_wait_to_complete = 0;
6260 /* Copper options */
6261 if (adapter->hw.phy.media_type == e1000_media_type_copper) {
6262 adapter->hw.phy.mdix = AUTO_ALL_MODES;
6263 adapter->hw.phy.disable_polarity_correction = 0;
6264 adapter->hw.phy.ms_type = e1000_ms_hw_default;
6267 if (hw->phy.ops.check_reset_block(hw))
6268 e_info("PHY reset is blocked due to SOL/IDER session.\n");
6270 /* Set initial default active device features */
6271 netdev->features = (NETIF_F_SG |
6272 NETIF_F_HW_VLAN_RX |
6273 NETIF_F_HW_VLAN_TX |
6280 /* Set user-changeable features (subset of all device features) */
6281 netdev->hw_features = netdev->features;
6282 netdev->hw_features |= NETIF_F_RXFCS;
6283 netdev->priv_flags |= IFF_SUPP_NOFCS;
6284 netdev->hw_features |= NETIF_F_RXALL;
6286 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
6287 netdev->features |= NETIF_F_HW_VLAN_FILTER;
6289 netdev->vlan_features |= (NETIF_F_SG |
6294 netdev->priv_flags |= IFF_UNICAST_FLT;
6296 if (pci_using_dac) {
6297 netdev->features |= NETIF_F_HIGHDMA;
6298 netdev->vlan_features |= NETIF_F_HIGHDMA;
6301 if (e1000e_enable_mng_pass_thru(&adapter->hw))
6302 adapter->flags |= FLAG_MNG_PT_ENABLED;
6305 * before reading the NVM, reset the controller to
6306 * put the device in a known good starting state
6308 adapter->hw.mac.ops.reset_hw(&adapter->hw);
6311 * systems with ASPM and others may see the checksum fail on the first
6312 * attempt. Let's give it a few tries
6315 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0)
6318 e_err("The NVM Checksum Is Not Valid\n");
6324 e1000_eeprom_checks(adapter);
6326 /* copy the MAC address */
6327 if (e1000e_read_mac_addr(&adapter->hw))
6328 e_err("NVM Read Error while reading MAC address\n");
6330 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
6331 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
6333 if (!is_valid_ether_addr(netdev->perm_addr)) {
6334 e_err("Invalid MAC Address: %pM\n", netdev->perm_addr);
6339 init_timer(&adapter->watchdog_timer);
6340 adapter->watchdog_timer.function = e1000_watchdog;
6341 adapter->watchdog_timer.data = (unsigned long) adapter;
6343 init_timer(&adapter->phy_info_timer);
6344 adapter->phy_info_timer.function = e1000_update_phy_info;
6345 adapter->phy_info_timer.data = (unsigned long) adapter;
6347 INIT_WORK(&adapter->reset_task, e1000_reset_task);
6348 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
6349 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround);
6350 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task);
6351 INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang);
6353 /* Initialize link parameters. User can change them with ethtool */
6354 adapter->hw.mac.autoneg = 1;
6355 adapter->fc_autoneg = true;
6356 adapter->hw.fc.requested_mode = e1000_fc_default;
6357 adapter->hw.fc.current_mode = e1000_fc_default;
6358 adapter->hw.phy.autoneg_advertised = 0x2f;
6360 /* ring size defaults */
6361 adapter->rx_ring->count = 256;
6362 adapter->tx_ring->count = 256;
6365 * Initial Wake on LAN setting - If APM wake is enabled in
6366 * the EEPROM, enable the ACPI Magic Packet filter
6368 if (adapter->flags & FLAG_APME_IN_WUC) {
6369 /* APME bit in EEPROM is mapped to WUC.APME */
6370 eeprom_data = er32(WUC);
6371 eeprom_apme_mask = E1000_WUC_APME;
6372 if ((hw->mac.type > e1000_ich10lan) &&
6373 (eeprom_data & E1000_WUC_PHY_WAKE))
6374 adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP;
6375 } else if (adapter->flags & FLAG_APME_IN_CTRL3) {
6376 if (adapter->flags & FLAG_APME_CHECK_PORT_B &&
6377 (adapter->hw.bus.func == 1))
6378 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_B,
6381 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_A,
6385 /* fetch WoL from EEPROM */
6386 if (eeprom_data & eeprom_apme_mask)
6387 adapter->eeprom_wol |= E1000_WUFC_MAG;
6390 * now that we have the eeprom settings, apply the special cases
6391 * where the eeprom may be wrong or the board simply won't support
6392 * wake on lan on a particular port
6394 if (!(adapter->flags & FLAG_HAS_WOL))
6395 adapter->eeprom_wol = 0;
6397 /* initialize the wol settings based on the eeprom settings */
6398 adapter->wol = adapter->eeprom_wol;
6399 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
6401 /* save off EEPROM version number */
6402 e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers);
6404 /* reset the hardware with the new settings */
6405 e1000e_reset(adapter);
6408 * If the controller has AMT, do not set DRV_LOAD until the interface
6409 * is up. For all other cases, let the f/w know that the h/w is now
6410 * under the control of the driver.
6412 if (!(adapter->flags & FLAG_HAS_AMT))
6413 e1000e_get_hw_control(adapter);
6415 strlcpy(netdev->name, "eth%d", sizeof(netdev->name));
6416 err = register_netdev(netdev);
6420 /* carrier off reporting is important to ethtool even BEFORE open */
6421 netif_carrier_off(netdev);
6423 e1000_print_device_info(adapter);
6425 if (pci_dev_run_wake(pdev))
6426 pm_runtime_put_noidle(&pdev->dev);
6431 if (!(adapter->flags & FLAG_HAS_AMT))
6432 e1000e_release_hw_control(adapter);
6434 if (!hw->phy.ops.check_reset_block(hw))
6435 e1000_phy_hw_reset(&adapter->hw);
6437 kfree(adapter->tx_ring);
6438 kfree(adapter->rx_ring);
6440 if (adapter->hw.flash_address)
6441 iounmap(adapter->hw.flash_address);
6442 e1000e_reset_interrupt_capability(adapter);
6444 iounmap(adapter->hw.hw_addr);
6446 free_netdev(netdev);
6448 pci_release_selected_regions(pdev,
6449 pci_select_bars(pdev, IORESOURCE_MEM));
6452 pci_disable_device(pdev);
6457 * e1000_remove - Device Removal Routine
6458 * @pdev: PCI device information struct
6460 * e1000_remove is called by the PCI subsystem to alert the driver
6461 * that it should release a PCI device. The could be caused by a
6462 * Hot-Plug event, or because the driver is going to be removed from
6465 static void __devexit e1000_remove(struct pci_dev *pdev)
6467 struct net_device *netdev = pci_get_drvdata(pdev);
6468 struct e1000_adapter *adapter = netdev_priv(netdev);
6469 bool down = test_bit(__E1000_DOWN, &adapter->state);
6472 * The timers may be rescheduled, so explicitly disable them
6473 * from being rescheduled.
6476 set_bit(__E1000_DOWN, &adapter->state);
6477 del_timer_sync(&adapter->watchdog_timer);
6478 del_timer_sync(&adapter->phy_info_timer);
6480 cancel_work_sync(&adapter->reset_task);
6481 cancel_work_sync(&adapter->watchdog_task);
6482 cancel_work_sync(&adapter->downshift_task);
6483 cancel_work_sync(&adapter->update_phy_task);
6484 cancel_work_sync(&adapter->print_hang_task);
6486 if (!(netdev->flags & IFF_UP))
6487 e1000_power_down_phy(adapter);
6489 /* Don't lie to e1000_close() down the road. */
6491 clear_bit(__E1000_DOWN, &adapter->state);
6492 unregister_netdev(netdev);
6494 if (pci_dev_run_wake(pdev))
6495 pm_runtime_get_noresume(&pdev->dev);
6498 * Release control of h/w to f/w. If f/w is AMT enabled, this
6499 * would have already happened in close and is redundant.
6501 e1000e_release_hw_control(adapter);
6503 e1000e_reset_interrupt_capability(adapter);
6504 kfree(adapter->tx_ring);
6505 kfree(adapter->rx_ring);
6507 iounmap(adapter->hw.hw_addr);
6508 if (adapter->hw.flash_address)
6509 iounmap(adapter->hw.flash_address);
6510 pci_release_selected_regions(pdev,
6511 pci_select_bars(pdev, IORESOURCE_MEM));
6513 free_netdev(netdev);
6516 pci_disable_pcie_error_reporting(pdev);
6518 pci_disable_device(pdev);
6521 /* PCI Error Recovery (ERS) */
6522 static struct pci_error_handlers e1000_err_handler = {
6523 .error_detected = e1000_io_error_detected,
6524 .slot_reset = e1000_io_slot_reset,
6525 .resume = e1000_io_resume,
6528 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = {
6529 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 },
6530 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 },
6531 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 },
6532 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 },
6533 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 },
6534 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 },
6535 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 },
6536 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 },
6537 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 },
6539 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 },
6540 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 },
6541 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 },
6542 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 },
6544 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 },
6545 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 },
6546 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 },
6548 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 },
6549 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 },
6550 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 },
6552 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT),
6553 board_80003es2lan },
6554 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT),
6555 board_80003es2lan },
6556 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT),
6557 board_80003es2lan },
6558 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT),
6559 board_80003es2lan },
6561 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan },
6562 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan },
6563 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan },
6564 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan },
6565 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan },
6566 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan },
6567 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan },
6568 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan },
6570 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan },
6571 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan },
6572 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan },
6573 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan },
6574 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan },
6575 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan },
6576 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan },
6577 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan },
6578 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan },
6580 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan },
6581 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan },
6582 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan },
6584 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan },
6585 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan },
6586 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan },
6588 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan },
6589 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan },
6590 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan },
6591 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan },
6593 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan },
6594 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan },
6596 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */
6598 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
6601 static const struct dev_pm_ops e1000_pm_ops = {
6602 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume)
6603 SET_RUNTIME_PM_OPS(e1000_runtime_suspend,
6604 e1000_runtime_resume, e1000_idle)
6608 /* PCI Device API Driver */
6609 static struct pci_driver e1000_driver = {
6610 .name = e1000e_driver_name,
6611 .id_table = e1000_pci_tbl,
6612 .probe = e1000_probe,
6613 .remove = __devexit_p(e1000_remove),
6616 .pm = &e1000_pm_ops,
6619 .shutdown = e1000_shutdown,
6620 .err_handler = &e1000_err_handler
6624 * e1000_init_module - Driver Registration Routine
6626 * e1000_init_module is the first routine called when the driver is
6627 * loaded. All it does is register with the PCI subsystem.
6629 static int __init e1000_init_module(void)
6632 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
6633 e1000e_driver_version);
6634 pr_info("Copyright(c) 1999 - 2012 Intel Corporation.\n");
6635 ret = pci_register_driver(&e1000_driver);
6639 module_init(e1000_init_module);
6642 * e1000_exit_module - Driver Exit Cleanup Routine
6644 * e1000_exit_module is called just before the driver is removed
6647 static void __exit e1000_exit_module(void)
6649 pci_unregister_driver(&e1000_driver);
6651 module_exit(e1000_exit_module);
6654 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
6655 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
6656 MODULE_LICENSE("GPL");
6657 MODULE_VERSION(DRV_VERSION);