1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2009 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
29 #include <linux/module.h>
30 #include <linux/types.h>
31 #include <linux/init.h>
32 #include <linux/pci.h>
33 #include <linux/vmalloc.h>
34 #include <linux/pagemap.h>
35 #include <linux/delay.h>
36 #include <linux/netdevice.h>
37 #include <linux/tcp.h>
38 #include <linux/ipv6.h>
39 #include <net/checksum.h>
40 #include <net/ip6_checksum.h>
41 #include <linux/mii.h>
42 #include <linux/ethtool.h>
43 #include <linux/if_vlan.h>
44 #include <linux/cpu.h>
45 #include <linux/smp.h>
46 #include <linux/pm_qos_params.h>
47 #include <linux/aer.h>
51 #define DRV_VERSION "1.0.2-k2"
52 char e1000e_driver_name[] = "e1000e";
53 const char e1000e_driver_version[] = DRV_VERSION;
55 static const struct e1000_info *e1000_info_tbl[] = {
56 [board_82571] = &e1000_82571_info,
57 [board_82572] = &e1000_82572_info,
58 [board_82573] = &e1000_82573_info,
59 [board_82574] = &e1000_82574_info,
60 [board_82583] = &e1000_82583_info,
61 [board_80003es2lan] = &e1000_es2_info,
62 [board_ich8lan] = &e1000_ich8_info,
63 [board_ich9lan] = &e1000_ich9_info,
64 [board_ich10lan] = &e1000_ich10_info,
65 [board_pchlan] = &e1000_pch_info,
69 * e1000_desc_unused - calculate if we have unused descriptors
71 static int e1000_desc_unused(struct e1000_ring *ring)
73 if (ring->next_to_clean > ring->next_to_use)
74 return ring->next_to_clean - ring->next_to_use - 1;
76 return ring->count + ring->next_to_clean - ring->next_to_use - 1;
80 * e1000_receive_skb - helper function to handle Rx indications
81 * @adapter: board private structure
82 * @status: descriptor status field as written by hardware
83 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
84 * @skb: pointer to sk_buff to be indicated to stack
86 static void e1000_receive_skb(struct e1000_adapter *adapter,
87 struct net_device *netdev,
89 u8 status, __le16 vlan)
91 skb->protocol = eth_type_trans(skb, netdev);
93 if (adapter->vlgrp && (status & E1000_RXD_STAT_VP))
94 vlan_gro_receive(&adapter->napi, adapter->vlgrp,
95 le16_to_cpu(vlan), skb);
97 napi_gro_receive(&adapter->napi, skb);
101 * e1000_rx_checksum - Receive Checksum Offload for 82543
102 * @adapter: board private structure
103 * @status_err: receive descriptor status and error fields
104 * @csum: receive descriptor csum field
105 * @sk_buff: socket buffer with received data
107 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
108 u32 csum, struct sk_buff *skb)
110 u16 status = (u16)status_err;
111 u8 errors = (u8)(status_err >> 24);
112 skb->ip_summed = CHECKSUM_NONE;
114 /* Ignore Checksum bit is set */
115 if (status & E1000_RXD_STAT_IXSM)
117 /* TCP/UDP checksum error bit is set */
118 if (errors & E1000_RXD_ERR_TCPE) {
119 /* let the stack verify checksum errors */
120 adapter->hw_csum_err++;
124 /* TCP/UDP Checksum has not been calculated */
125 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
128 /* It must be a TCP or UDP packet with a valid checksum */
129 if (status & E1000_RXD_STAT_TCPCS) {
130 /* TCP checksum is good */
131 skb->ip_summed = CHECKSUM_UNNECESSARY;
134 * IP fragment with UDP payload
135 * Hardware complements the payload checksum, so we undo it
136 * and then put the value in host order for further stack use.
138 __sum16 sum = (__force __sum16)htons(csum);
139 skb->csum = csum_unfold(~sum);
140 skb->ip_summed = CHECKSUM_COMPLETE;
142 adapter->hw_csum_good++;
146 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
147 * @adapter: address of board private structure
149 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
152 struct net_device *netdev = adapter->netdev;
153 struct pci_dev *pdev = adapter->pdev;
154 struct e1000_ring *rx_ring = adapter->rx_ring;
155 struct e1000_rx_desc *rx_desc;
156 struct e1000_buffer *buffer_info;
159 unsigned int bufsz = adapter->rx_buffer_len;
161 i = rx_ring->next_to_use;
162 buffer_info = &rx_ring->buffer_info[i];
164 while (cleaned_count--) {
165 skb = buffer_info->skb;
171 skb = netdev_alloc_skb_ip_align(netdev, bufsz);
173 /* Better luck next round */
174 adapter->alloc_rx_buff_failed++;
178 buffer_info->skb = skb;
180 buffer_info->dma = pci_map_single(pdev, skb->data,
181 adapter->rx_buffer_len,
183 if (pci_dma_mapping_error(pdev, buffer_info->dma)) {
184 dev_err(&pdev->dev, "RX DMA map failed\n");
185 adapter->rx_dma_failed++;
189 rx_desc = E1000_RX_DESC(*rx_ring, i);
190 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
193 if (i == rx_ring->count)
195 buffer_info = &rx_ring->buffer_info[i];
198 if (rx_ring->next_to_use != i) {
199 rx_ring->next_to_use = i;
201 i = (rx_ring->count - 1);
204 * Force memory writes to complete before letting h/w
205 * know there are new descriptors to fetch. (Only
206 * applicable for weak-ordered memory model archs,
210 writel(i, adapter->hw.hw_addr + rx_ring->tail);
215 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
216 * @adapter: address of board private structure
218 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
221 struct net_device *netdev = adapter->netdev;
222 struct pci_dev *pdev = adapter->pdev;
223 union e1000_rx_desc_packet_split *rx_desc;
224 struct e1000_ring *rx_ring = adapter->rx_ring;
225 struct e1000_buffer *buffer_info;
226 struct e1000_ps_page *ps_page;
230 i = rx_ring->next_to_use;
231 buffer_info = &rx_ring->buffer_info[i];
233 while (cleaned_count--) {
234 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
236 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
237 ps_page = &buffer_info->ps_pages[j];
238 if (j >= adapter->rx_ps_pages) {
239 /* all unused desc entries get hw null ptr */
240 rx_desc->read.buffer_addr[j+1] = ~cpu_to_le64(0);
243 if (!ps_page->page) {
244 ps_page->page = alloc_page(GFP_ATOMIC);
245 if (!ps_page->page) {
246 adapter->alloc_rx_buff_failed++;
249 ps_page->dma = pci_map_page(pdev,
253 if (pci_dma_mapping_error(pdev, ps_page->dma)) {
254 dev_err(&adapter->pdev->dev,
255 "RX DMA page map failed\n");
256 adapter->rx_dma_failed++;
261 * Refresh the desc even if buffer_addrs
262 * didn't change because each write-back
265 rx_desc->read.buffer_addr[j+1] =
266 cpu_to_le64(ps_page->dma);
269 skb = netdev_alloc_skb_ip_align(netdev,
270 adapter->rx_ps_bsize0);
273 adapter->alloc_rx_buff_failed++;
277 buffer_info->skb = skb;
278 buffer_info->dma = pci_map_single(pdev, skb->data,
279 adapter->rx_ps_bsize0,
281 if (pci_dma_mapping_error(pdev, buffer_info->dma)) {
282 dev_err(&pdev->dev, "RX DMA map failed\n");
283 adapter->rx_dma_failed++;
285 dev_kfree_skb_any(skb);
286 buffer_info->skb = NULL;
290 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
293 if (i == rx_ring->count)
295 buffer_info = &rx_ring->buffer_info[i];
299 if (rx_ring->next_to_use != i) {
300 rx_ring->next_to_use = i;
303 i = (rx_ring->count - 1);
306 * Force memory writes to complete before letting h/w
307 * know there are new descriptors to fetch. (Only
308 * applicable for weak-ordered memory model archs,
313 * Hardware increments by 16 bytes, but packet split
314 * descriptors are 32 bytes...so we increment tail
317 writel(i<<1, adapter->hw.hw_addr + rx_ring->tail);
322 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
323 * @adapter: address of board private structure
324 * @cleaned_count: number of buffers to allocate this pass
327 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
330 struct net_device *netdev = adapter->netdev;
331 struct pci_dev *pdev = adapter->pdev;
332 struct e1000_rx_desc *rx_desc;
333 struct e1000_ring *rx_ring = adapter->rx_ring;
334 struct e1000_buffer *buffer_info;
337 unsigned int bufsz = 256 - 16 /* for skb_reserve */;
339 i = rx_ring->next_to_use;
340 buffer_info = &rx_ring->buffer_info[i];
342 while (cleaned_count--) {
343 skb = buffer_info->skb;
349 skb = netdev_alloc_skb_ip_align(netdev, bufsz);
350 if (unlikely(!skb)) {
351 /* Better luck next round */
352 adapter->alloc_rx_buff_failed++;
356 buffer_info->skb = skb;
358 /* allocate a new page if necessary */
359 if (!buffer_info->page) {
360 buffer_info->page = alloc_page(GFP_ATOMIC);
361 if (unlikely(!buffer_info->page)) {
362 adapter->alloc_rx_buff_failed++;
367 if (!buffer_info->dma)
368 buffer_info->dma = pci_map_page(pdev,
369 buffer_info->page, 0,
373 rx_desc = E1000_RX_DESC(*rx_ring, i);
374 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
376 if (unlikely(++i == rx_ring->count))
378 buffer_info = &rx_ring->buffer_info[i];
381 if (likely(rx_ring->next_to_use != i)) {
382 rx_ring->next_to_use = i;
383 if (unlikely(i-- == 0))
384 i = (rx_ring->count - 1);
386 /* Force memory writes to complete before letting h/w
387 * know there are new descriptors to fetch. (Only
388 * applicable for weak-ordered memory model archs,
391 writel(i, adapter->hw.hw_addr + rx_ring->tail);
396 * e1000_clean_rx_irq - Send received data up the network stack; legacy
397 * @adapter: board private structure
399 * the return value indicates whether actual cleaning was done, there
400 * is no guarantee that everything was cleaned
402 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
403 int *work_done, int work_to_do)
405 struct net_device *netdev = adapter->netdev;
406 struct pci_dev *pdev = adapter->pdev;
407 struct e1000_hw *hw = &adapter->hw;
408 struct e1000_ring *rx_ring = adapter->rx_ring;
409 struct e1000_rx_desc *rx_desc, *next_rxd;
410 struct e1000_buffer *buffer_info, *next_buffer;
413 int cleaned_count = 0;
415 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
417 i = rx_ring->next_to_clean;
418 rx_desc = E1000_RX_DESC(*rx_ring, i);
419 buffer_info = &rx_ring->buffer_info[i];
421 while (rx_desc->status & E1000_RXD_STAT_DD) {
425 if (*work_done >= work_to_do)
429 status = rx_desc->status;
430 skb = buffer_info->skb;
431 buffer_info->skb = NULL;
433 prefetch(skb->data - NET_IP_ALIGN);
436 if (i == rx_ring->count)
438 next_rxd = E1000_RX_DESC(*rx_ring, i);
441 next_buffer = &rx_ring->buffer_info[i];
445 pci_unmap_single(pdev,
447 adapter->rx_buffer_len,
449 buffer_info->dma = 0;
451 length = le16_to_cpu(rx_desc->length);
453 /* !EOP means multiple descriptors were used to store a single
454 * packet, also make sure the frame isn't just CRC only */
455 if (!(status & E1000_RXD_STAT_EOP) || (length <= 4)) {
456 /* All receives must fit into a single buffer */
457 e_dbg("Receive packet consumed multiple buffers\n");
459 buffer_info->skb = skb;
463 if (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) {
465 buffer_info->skb = skb;
469 /* adjust length to remove Ethernet CRC */
470 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING))
473 total_rx_bytes += length;
477 * code added for copybreak, this should improve
478 * performance for small packets with large amounts
479 * of reassembly being done in the stack
481 if (length < copybreak) {
482 struct sk_buff *new_skb =
483 netdev_alloc_skb_ip_align(netdev, length);
485 skb_copy_to_linear_data_offset(new_skb,
491 /* save the skb in buffer_info as good */
492 buffer_info->skb = skb;
495 /* else just continue with the old one */
497 /* end copybreak code */
498 skb_put(skb, length);
500 /* Receive Checksum Offload */
501 e1000_rx_checksum(adapter,
503 ((u32)(rx_desc->errors) << 24),
504 le16_to_cpu(rx_desc->csum), skb);
506 e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special);
511 /* return some buffers to hardware, one at a time is too slow */
512 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
513 adapter->alloc_rx_buf(adapter, cleaned_count);
517 /* use prefetched values */
519 buffer_info = next_buffer;
521 rx_ring->next_to_clean = i;
523 cleaned_count = e1000_desc_unused(rx_ring);
525 adapter->alloc_rx_buf(adapter, cleaned_count);
527 adapter->total_rx_bytes += total_rx_bytes;
528 adapter->total_rx_packets += total_rx_packets;
529 netdev->stats.rx_bytes += total_rx_bytes;
530 netdev->stats.rx_packets += total_rx_packets;
534 static void e1000_put_txbuf(struct e1000_adapter *adapter,
535 struct e1000_buffer *buffer_info)
537 buffer_info->dma = 0;
538 if (buffer_info->skb) {
539 skb_dma_unmap(&adapter->pdev->dev, buffer_info->skb,
541 dev_kfree_skb_any(buffer_info->skb);
542 buffer_info->skb = NULL;
544 buffer_info->time_stamp = 0;
547 static void e1000_print_hw_hang(struct work_struct *work)
549 struct e1000_adapter *adapter = container_of(work,
550 struct e1000_adapter,
552 struct e1000_ring *tx_ring = adapter->tx_ring;
553 unsigned int i = tx_ring->next_to_clean;
554 unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
555 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop);
556 struct e1000_hw *hw = &adapter->hw;
557 u16 phy_status, phy_1000t_status, phy_ext_status;
560 e1e_rphy(hw, PHY_STATUS, &phy_status);
561 e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status);
562 e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status);
564 pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status);
566 /* detected Hardware unit hang */
567 e_err("Detected Hardware Unit Hang:\n"
570 " next_to_use <%x>\n"
571 " next_to_clean <%x>\n"
572 "buffer_info[next_to_clean]:\n"
573 " time_stamp <%lx>\n"
574 " next_to_watch <%x>\n"
576 " next_to_watch.status <%x>\n"
579 "PHY 1000BASE-T Status <%x>\n"
580 "PHY Extended Status <%x>\n"
582 readl(adapter->hw.hw_addr + tx_ring->head),
583 readl(adapter->hw.hw_addr + tx_ring->tail),
584 tx_ring->next_to_use,
585 tx_ring->next_to_clean,
586 tx_ring->buffer_info[eop].time_stamp,
589 eop_desc->upper.fields.status,
598 * e1000_clean_tx_irq - Reclaim resources after transmit completes
599 * @adapter: board private structure
601 * the return value indicates whether actual cleaning was done, there
602 * is no guarantee that everything was cleaned
604 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)
606 struct net_device *netdev = adapter->netdev;
607 struct e1000_hw *hw = &adapter->hw;
608 struct e1000_ring *tx_ring = adapter->tx_ring;
609 struct e1000_tx_desc *tx_desc, *eop_desc;
610 struct e1000_buffer *buffer_info;
612 unsigned int count = 0;
613 unsigned int total_tx_bytes = 0, total_tx_packets = 0;
615 i = tx_ring->next_to_clean;
616 eop = tx_ring->buffer_info[i].next_to_watch;
617 eop_desc = E1000_TX_DESC(*tx_ring, eop);
619 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
620 (count < tx_ring->count)) {
621 bool cleaned = false;
622 for (; !cleaned; count++) {
623 tx_desc = E1000_TX_DESC(*tx_ring, i);
624 buffer_info = &tx_ring->buffer_info[i];
625 cleaned = (i == eop);
628 struct sk_buff *skb = buffer_info->skb;
629 unsigned int segs, bytecount;
630 segs = skb_shinfo(skb)->gso_segs ?: 1;
631 /* multiply data chunks by size of headers */
632 bytecount = ((segs - 1) * skb_headlen(skb)) +
634 total_tx_packets += segs;
635 total_tx_bytes += bytecount;
638 e1000_put_txbuf(adapter, buffer_info);
639 tx_desc->upper.data = 0;
642 if (i == tx_ring->count)
646 eop = tx_ring->buffer_info[i].next_to_watch;
647 eop_desc = E1000_TX_DESC(*tx_ring, eop);
650 tx_ring->next_to_clean = i;
652 #define TX_WAKE_THRESHOLD 32
653 if (count && netif_carrier_ok(netdev) &&
654 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
655 /* Make sure that anybody stopping the queue after this
656 * sees the new next_to_clean.
660 if (netif_queue_stopped(netdev) &&
661 !(test_bit(__E1000_DOWN, &adapter->state))) {
662 netif_wake_queue(netdev);
663 ++adapter->restart_queue;
667 if (adapter->detect_tx_hung) {
669 * Detect a transmit hang in hardware, this serializes the
670 * check with the clearing of time_stamp and movement of i
672 adapter->detect_tx_hung = 0;
673 if (tx_ring->buffer_info[i].time_stamp &&
674 time_after(jiffies, tx_ring->buffer_info[i].time_stamp
675 + (adapter->tx_timeout_factor * HZ))
676 && !(er32(STATUS) & E1000_STATUS_TXOFF)) {
677 schedule_work(&adapter->print_hang_task);
678 netif_stop_queue(netdev);
681 adapter->total_tx_bytes += total_tx_bytes;
682 adapter->total_tx_packets += total_tx_packets;
683 netdev->stats.tx_bytes += total_tx_bytes;
684 netdev->stats.tx_packets += total_tx_packets;
685 return (count < tx_ring->count);
689 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
690 * @adapter: board private structure
692 * the return value indicates whether actual cleaning was done, there
693 * is no guarantee that everything was cleaned
695 static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
696 int *work_done, int work_to_do)
698 struct e1000_hw *hw = &adapter->hw;
699 union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
700 struct net_device *netdev = adapter->netdev;
701 struct pci_dev *pdev = adapter->pdev;
702 struct e1000_ring *rx_ring = adapter->rx_ring;
703 struct e1000_buffer *buffer_info, *next_buffer;
704 struct e1000_ps_page *ps_page;
708 int cleaned_count = 0;
710 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
712 i = rx_ring->next_to_clean;
713 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
714 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
715 buffer_info = &rx_ring->buffer_info[i];
717 while (staterr & E1000_RXD_STAT_DD) {
718 if (*work_done >= work_to_do)
721 skb = buffer_info->skb;
723 /* in the packet split case this is header only */
724 prefetch(skb->data - NET_IP_ALIGN);
727 if (i == rx_ring->count)
729 next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
732 next_buffer = &rx_ring->buffer_info[i];
736 pci_unmap_single(pdev, buffer_info->dma,
737 adapter->rx_ps_bsize0,
739 buffer_info->dma = 0;
741 if (!(staterr & E1000_RXD_STAT_EOP)) {
742 e_dbg("Packet Split buffers didn't pick up the full "
744 dev_kfree_skb_irq(skb);
748 if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
749 dev_kfree_skb_irq(skb);
753 length = le16_to_cpu(rx_desc->wb.middle.length0);
756 e_dbg("Last part of the packet spanning multiple "
758 dev_kfree_skb_irq(skb);
763 skb_put(skb, length);
767 * this looks ugly, but it seems compiler issues make it
768 * more efficient than reusing j
770 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
773 * page alloc/put takes too long and effects small packet
774 * throughput, so unsplit small packets and save the alloc/put
775 * only valid in softirq (napi) context to call kmap_*
777 if (l1 && (l1 <= copybreak) &&
778 ((length + l1) <= adapter->rx_ps_bsize0)) {
781 ps_page = &buffer_info->ps_pages[0];
784 * there is no documentation about how to call
785 * kmap_atomic, so we can't hold the mapping
788 pci_dma_sync_single_for_cpu(pdev, ps_page->dma,
789 PAGE_SIZE, PCI_DMA_FROMDEVICE);
790 vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ);
791 memcpy(skb_tail_pointer(skb), vaddr, l1);
792 kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
793 pci_dma_sync_single_for_device(pdev, ps_page->dma,
794 PAGE_SIZE, PCI_DMA_FROMDEVICE);
797 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING))
805 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
806 length = le16_to_cpu(rx_desc->wb.upper.length[j]);
810 ps_page = &buffer_info->ps_pages[j];
811 pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE,
814 skb_fill_page_desc(skb, j, ps_page->page, 0, length);
815 ps_page->page = NULL;
817 skb->data_len += length;
818 skb->truesize += length;
821 /* strip the ethernet crc, problem is we're using pages now so
822 * this whole operation can get a little cpu intensive
824 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING))
825 pskb_trim(skb, skb->len - 4);
828 total_rx_bytes += skb->len;
831 e1000_rx_checksum(adapter, staterr, le16_to_cpu(
832 rx_desc->wb.lower.hi_dword.csum_ip.csum), skb);
834 if (rx_desc->wb.upper.header_status &
835 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))
836 adapter->rx_hdr_split++;
838 e1000_receive_skb(adapter, netdev, skb,
839 staterr, rx_desc->wb.middle.vlan);
842 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
843 buffer_info->skb = NULL;
845 /* return some buffers to hardware, one at a time is too slow */
846 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
847 adapter->alloc_rx_buf(adapter, cleaned_count);
851 /* use prefetched values */
853 buffer_info = next_buffer;
855 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
857 rx_ring->next_to_clean = i;
859 cleaned_count = e1000_desc_unused(rx_ring);
861 adapter->alloc_rx_buf(adapter, cleaned_count);
863 adapter->total_rx_bytes += total_rx_bytes;
864 adapter->total_rx_packets += total_rx_packets;
865 netdev->stats.rx_bytes += total_rx_bytes;
866 netdev->stats.rx_packets += total_rx_packets;
871 * e1000_consume_page - helper function
873 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
878 skb->data_len += length;
879 skb->truesize += length;
883 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
884 * @adapter: board private structure
886 * the return value indicates whether actual cleaning was done, there
887 * is no guarantee that everything was cleaned
890 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
891 int *work_done, int work_to_do)
893 struct net_device *netdev = adapter->netdev;
894 struct pci_dev *pdev = adapter->pdev;
895 struct e1000_ring *rx_ring = adapter->rx_ring;
896 struct e1000_rx_desc *rx_desc, *next_rxd;
897 struct e1000_buffer *buffer_info, *next_buffer;
900 int cleaned_count = 0;
901 bool cleaned = false;
902 unsigned int total_rx_bytes=0, total_rx_packets=0;
904 i = rx_ring->next_to_clean;
905 rx_desc = E1000_RX_DESC(*rx_ring, i);
906 buffer_info = &rx_ring->buffer_info[i];
908 while (rx_desc->status & E1000_RXD_STAT_DD) {
912 if (*work_done >= work_to_do)
916 status = rx_desc->status;
917 skb = buffer_info->skb;
918 buffer_info->skb = NULL;
921 if (i == rx_ring->count)
923 next_rxd = E1000_RX_DESC(*rx_ring, i);
926 next_buffer = &rx_ring->buffer_info[i];
930 pci_unmap_page(pdev, buffer_info->dma, PAGE_SIZE,
932 buffer_info->dma = 0;
934 length = le16_to_cpu(rx_desc->length);
936 /* errors is only valid for DD + EOP descriptors */
937 if (unlikely((status & E1000_RXD_STAT_EOP) &&
938 (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) {
939 /* recycle both page and skb */
940 buffer_info->skb = skb;
941 /* an error means any chain goes out the window
943 if (rx_ring->rx_skb_top)
944 dev_kfree_skb(rx_ring->rx_skb_top);
945 rx_ring->rx_skb_top = NULL;
949 #define rxtop rx_ring->rx_skb_top
950 if (!(status & E1000_RXD_STAT_EOP)) {
951 /* this descriptor is only the beginning (or middle) */
953 /* this is the beginning of a chain */
955 skb_fill_page_desc(rxtop, 0, buffer_info->page,
958 /* this is the middle of a chain */
959 skb_fill_page_desc(rxtop,
960 skb_shinfo(rxtop)->nr_frags,
961 buffer_info->page, 0, length);
962 /* re-use the skb, only consumed the page */
963 buffer_info->skb = skb;
965 e1000_consume_page(buffer_info, rxtop, length);
969 /* end of the chain */
970 skb_fill_page_desc(rxtop,
971 skb_shinfo(rxtop)->nr_frags,
972 buffer_info->page, 0, length);
973 /* re-use the current skb, we only consumed the
975 buffer_info->skb = skb;
978 e1000_consume_page(buffer_info, skb, length);
980 /* no chain, got EOP, this buf is the packet
981 * copybreak to save the put_page/alloc_page */
982 if (length <= copybreak &&
983 skb_tailroom(skb) >= length) {
985 vaddr = kmap_atomic(buffer_info->page,
986 KM_SKB_DATA_SOFTIRQ);
987 memcpy(skb_tail_pointer(skb), vaddr,
990 KM_SKB_DATA_SOFTIRQ);
991 /* re-use the page, so don't erase
992 * buffer_info->page */
993 skb_put(skb, length);
995 skb_fill_page_desc(skb, 0,
996 buffer_info->page, 0,
998 e1000_consume_page(buffer_info, skb,
1004 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1005 e1000_rx_checksum(adapter,
1007 ((u32)(rx_desc->errors) << 24),
1008 le16_to_cpu(rx_desc->csum), skb);
1010 /* probably a little skewed due to removing CRC */
1011 total_rx_bytes += skb->len;
1014 /* eth type trans needs skb->data to point to something */
1015 if (!pskb_may_pull(skb, ETH_HLEN)) {
1016 e_err("pskb_may_pull failed.\n");
1021 e1000_receive_skb(adapter, netdev, skb, status,
1025 rx_desc->status = 0;
1027 /* return some buffers to hardware, one at a time is too slow */
1028 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
1029 adapter->alloc_rx_buf(adapter, cleaned_count);
1033 /* use prefetched values */
1035 buffer_info = next_buffer;
1037 rx_ring->next_to_clean = i;
1039 cleaned_count = e1000_desc_unused(rx_ring);
1041 adapter->alloc_rx_buf(adapter, cleaned_count);
1043 adapter->total_rx_bytes += total_rx_bytes;
1044 adapter->total_rx_packets += total_rx_packets;
1045 netdev->stats.rx_bytes += total_rx_bytes;
1046 netdev->stats.rx_packets += total_rx_packets;
1051 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1052 * @adapter: board private structure
1054 static void e1000_clean_rx_ring(struct e1000_adapter *adapter)
1056 struct e1000_ring *rx_ring = adapter->rx_ring;
1057 struct e1000_buffer *buffer_info;
1058 struct e1000_ps_page *ps_page;
1059 struct pci_dev *pdev = adapter->pdev;
1062 /* Free all the Rx ring sk_buffs */
1063 for (i = 0; i < rx_ring->count; i++) {
1064 buffer_info = &rx_ring->buffer_info[i];
1065 if (buffer_info->dma) {
1066 if (adapter->clean_rx == e1000_clean_rx_irq)
1067 pci_unmap_single(pdev, buffer_info->dma,
1068 adapter->rx_buffer_len,
1069 PCI_DMA_FROMDEVICE);
1070 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq)
1071 pci_unmap_page(pdev, buffer_info->dma,
1073 PCI_DMA_FROMDEVICE);
1074 else if (adapter->clean_rx == e1000_clean_rx_irq_ps)
1075 pci_unmap_single(pdev, buffer_info->dma,
1076 adapter->rx_ps_bsize0,
1077 PCI_DMA_FROMDEVICE);
1078 buffer_info->dma = 0;
1081 if (buffer_info->page) {
1082 put_page(buffer_info->page);
1083 buffer_info->page = NULL;
1086 if (buffer_info->skb) {
1087 dev_kfree_skb(buffer_info->skb);
1088 buffer_info->skb = NULL;
1091 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
1092 ps_page = &buffer_info->ps_pages[j];
1095 pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE,
1096 PCI_DMA_FROMDEVICE);
1098 put_page(ps_page->page);
1099 ps_page->page = NULL;
1103 /* there also may be some cached data from a chained receive */
1104 if (rx_ring->rx_skb_top) {
1105 dev_kfree_skb(rx_ring->rx_skb_top);
1106 rx_ring->rx_skb_top = NULL;
1109 /* Zero out the descriptor ring */
1110 memset(rx_ring->desc, 0, rx_ring->size);
1112 rx_ring->next_to_clean = 0;
1113 rx_ring->next_to_use = 0;
1115 writel(0, adapter->hw.hw_addr + rx_ring->head);
1116 writel(0, adapter->hw.hw_addr + rx_ring->tail);
1119 static void e1000e_downshift_workaround(struct work_struct *work)
1121 struct e1000_adapter *adapter = container_of(work,
1122 struct e1000_adapter, downshift_task);
1124 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw);
1128 * e1000_intr_msi - Interrupt Handler
1129 * @irq: interrupt number
1130 * @data: pointer to a network interface device structure
1132 static irqreturn_t e1000_intr_msi(int irq, void *data)
1134 struct net_device *netdev = data;
1135 struct e1000_adapter *adapter = netdev_priv(netdev);
1136 struct e1000_hw *hw = &adapter->hw;
1137 u32 icr = er32(ICR);
1140 * read ICR disables interrupts using IAM
1143 if (icr & E1000_ICR_LSC) {
1144 hw->mac.get_link_status = 1;
1146 * ICH8 workaround-- Call gig speed drop workaround on cable
1147 * disconnect (LSC) before accessing any PHY registers
1149 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1150 (!(er32(STATUS) & E1000_STATUS_LU)))
1151 schedule_work(&adapter->downshift_task);
1154 * 80003ES2LAN workaround-- For packet buffer work-around on
1155 * link down event; disable receives here in the ISR and reset
1156 * adapter in watchdog
1158 if (netif_carrier_ok(netdev) &&
1159 adapter->flags & FLAG_RX_NEEDS_RESTART) {
1160 /* disable receives */
1161 u32 rctl = er32(RCTL);
1162 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1163 adapter->flags |= FLAG_RX_RESTART_NOW;
1165 /* guard against interrupt when we're going down */
1166 if (!test_bit(__E1000_DOWN, &adapter->state))
1167 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1170 if (napi_schedule_prep(&adapter->napi)) {
1171 adapter->total_tx_bytes = 0;
1172 adapter->total_tx_packets = 0;
1173 adapter->total_rx_bytes = 0;
1174 adapter->total_rx_packets = 0;
1175 __napi_schedule(&adapter->napi);
1182 * e1000_intr - Interrupt Handler
1183 * @irq: interrupt number
1184 * @data: pointer to a network interface device structure
1186 static irqreturn_t e1000_intr(int irq, void *data)
1188 struct net_device *netdev = data;
1189 struct e1000_adapter *adapter = netdev_priv(netdev);
1190 struct e1000_hw *hw = &adapter->hw;
1191 u32 rctl, icr = er32(ICR);
1193 if (!icr || test_bit(__E1000_DOWN, &adapter->state))
1194 return IRQ_NONE; /* Not our interrupt */
1197 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1198 * not set, then the adapter didn't send an interrupt
1200 if (!(icr & E1000_ICR_INT_ASSERTED))
1204 * Interrupt Auto-Mask...upon reading ICR,
1205 * interrupts are masked. No need for the
1209 if (icr & E1000_ICR_LSC) {
1210 hw->mac.get_link_status = 1;
1212 * ICH8 workaround-- Call gig speed drop workaround on cable
1213 * disconnect (LSC) before accessing any PHY registers
1215 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1216 (!(er32(STATUS) & E1000_STATUS_LU)))
1217 schedule_work(&adapter->downshift_task);
1220 * 80003ES2LAN workaround--
1221 * For packet buffer work-around on link down event;
1222 * disable receives here in the ISR and
1223 * reset adapter in watchdog
1225 if (netif_carrier_ok(netdev) &&
1226 (adapter->flags & FLAG_RX_NEEDS_RESTART)) {
1227 /* disable receives */
1229 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1230 adapter->flags |= FLAG_RX_RESTART_NOW;
1232 /* guard against interrupt when we're going down */
1233 if (!test_bit(__E1000_DOWN, &adapter->state))
1234 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1237 if (napi_schedule_prep(&adapter->napi)) {
1238 adapter->total_tx_bytes = 0;
1239 adapter->total_tx_packets = 0;
1240 adapter->total_rx_bytes = 0;
1241 adapter->total_rx_packets = 0;
1242 __napi_schedule(&adapter->napi);
1248 static irqreturn_t e1000_msix_other(int irq, void *data)
1250 struct net_device *netdev = data;
1251 struct e1000_adapter *adapter = netdev_priv(netdev);
1252 struct e1000_hw *hw = &adapter->hw;
1253 u32 icr = er32(ICR);
1255 if (!(icr & E1000_ICR_INT_ASSERTED)) {
1256 if (!test_bit(__E1000_DOWN, &adapter->state))
1257 ew32(IMS, E1000_IMS_OTHER);
1261 if (icr & adapter->eiac_mask)
1262 ew32(ICS, (icr & adapter->eiac_mask));
1264 if (icr & E1000_ICR_OTHER) {
1265 if (!(icr & E1000_ICR_LSC))
1266 goto no_link_interrupt;
1267 hw->mac.get_link_status = 1;
1268 /* guard against interrupt when we're going down */
1269 if (!test_bit(__E1000_DOWN, &adapter->state))
1270 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1274 if (!test_bit(__E1000_DOWN, &adapter->state))
1275 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER);
1281 static irqreturn_t e1000_intr_msix_tx(int irq, void *data)
1283 struct net_device *netdev = data;
1284 struct e1000_adapter *adapter = netdev_priv(netdev);
1285 struct e1000_hw *hw = &adapter->hw;
1286 struct e1000_ring *tx_ring = adapter->tx_ring;
1289 adapter->total_tx_bytes = 0;
1290 adapter->total_tx_packets = 0;
1292 if (!e1000_clean_tx_irq(adapter))
1293 /* Ring was not completely cleaned, so fire another interrupt */
1294 ew32(ICS, tx_ring->ims_val);
1299 static irqreturn_t e1000_intr_msix_rx(int irq, void *data)
1301 struct net_device *netdev = data;
1302 struct e1000_adapter *adapter = netdev_priv(netdev);
1304 /* Write the ITR value calculated at the end of the
1305 * previous interrupt.
1307 if (adapter->rx_ring->set_itr) {
1308 writel(1000000000 / (adapter->rx_ring->itr_val * 256),
1309 adapter->hw.hw_addr + adapter->rx_ring->itr_register);
1310 adapter->rx_ring->set_itr = 0;
1313 if (napi_schedule_prep(&adapter->napi)) {
1314 adapter->total_rx_bytes = 0;
1315 adapter->total_rx_packets = 0;
1316 __napi_schedule(&adapter->napi);
1322 * e1000_configure_msix - Configure MSI-X hardware
1324 * e1000_configure_msix sets up the hardware to properly
1325 * generate MSI-X interrupts.
1327 static void e1000_configure_msix(struct e1000_adapter *adapter)
1329 struct e1000_hw *hw = &adapter->hw;
1330 struct e1000_ring *rx_ring = adapter->rx_ring;
1331 struct e1000_ring *tx_ring = adapter->tx_ring;
1333 u32 ctrl_ext, ivar = 0;
1335 adapter->eiac_mask = 0;
1337 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1338 if (hw->mac.type == e1000_82574) {
1339 u32 rfctl = er32(RFCTL);
1340 rfctl |= E1000_RFCTL_ACK_DIS;
1344 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1345 /* Configure Rx vector */
1346 rx_ring->ims_val = E1000_IMS_RXQ0;
1347 adapter->eiac_mask |= rx_ring->ims_val;
1348 if (rx_ring->itr_val)
1349 writel(1000000000 / (rx_ring->itr_val * 256),
1350 hw->hw_addr + rx_ring->itr_register);
1352 writel(1, hw->hw_addr + rx_ring->itr_register);
1353 ivar = E1000_IVAR_INT_ALLOC_VALID | vector;
1355 /* Configure Tx vector */
1356 tx_ring->ims_val = E1000_IMS_TXQ0;
1358 if (tx_ring->itr_val)
1359 writel(1000000000 / (tx_ring->itr_val * 256),
1360 hw->hw_addr + tx_ring->itr_register);
1362 writel(1, hw->hw_addr + tx_ring->itr_register);
1363 adapter->eiac_mask |= tx_ring->ims_val;
1364 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8);
1366 /* set vector for Other Causes, e.g. link changes */
1368 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16);
1369 if (rx_ring->itr_val)
1370 writel(1000000000 / (rx_ring->itr_val * 256),
1371 hw->hw_addr + E1000_EITR_82574(vector));
1373 writel(1, hw->hw_addr + E1000_EITR_82574(vector));
1375 /* Cause Tx interrupts on every write back */
1380 /* enable MSI-X PBA support */
1381 ctrl_ext = er32(CTRL_EXT);
1382 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR;
1384 /* Auto-Mask Other interrupts upon ICR read */
1385 #define E1000_EIAC_MASK_82574 0x01F00000
1386 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER);
1387 ctrl_ext |= E1000_CTRL_EXT_EIAME;
1388 ew32(CTRL_EXT, ctrl_ext);
1392 void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter)
1394 if (adapter->msix_entries) {
1395 pci_disable_msix(adapter->pdev);
1396 kfree(adapter->msix_entries);
1397 adapter->msix_entries = NULL;
1398 } else if (adapter->flags & FLAG_MSI_ENABLED) {
1399 pci_disable_msi(adapter->pdev);
1400 adapter->flags &= ~FLAG_MSI_ENABLED;
1407 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1409 * Attempt to configure interrupts using the best available
1410 * capabilities of the hardware and kernel.
1412 void e1000e_set_interrupt_capability(struct e1000_adapter *adapter)
1418 switch (adapter->int_mode) {
1419 case E1000E_INT_MODE_MSIX:
1420 if (adapter->flags & FLAG_HAS_MSIX) {
1421 numvecs = 3; /* RxQ0, TxQ0 and other */
1422 adapter->msix_entries = kcalloc(numvecs,
1423 sizeof(struct msix_entry),
1425 if (adapter->msix_entries) {
1426 for (i = 0; i < numvecs; i++)
1427 adapter->msix_entries[i].entry = i;
1429 err = pci_enable_msix(adapter->pdev,
1430 adapter->msix_entries,
1435 /* MSI-X failed, so fall through and try MSI */
1436 e_err("Failed to initialize MSI-X interrupts. "
1437 "Falling back to MSI interrupts.\n");
1438 e1000e_reset_interrupt_capability(adapter);
1440 adapter->int_mode = E1000E_INT_MODE_MSI;
1442 case E1000E_INT_MODE_MSI:
1443 if (!pci_enable_msi(adapter->pdev)) {
1444 adapter->flags |= FLAG_MSI_ENABLED;
1446 adapter->int_mode = E1000E_INT_MODE_LEGACY;
1447 e_err("Failed to initialize MSI interrupts. Falling "
1448 "back to legacy interrupts.\n");
1451 case E1000E_INT_MODE_LEGACY:
1452 /* Don't do anything; this is the system default */
1460 * e1000_request_msix - Initialize MSI-X interrupts
1462 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1465 static int e1000_request_msix(struct e1000_adapter *adapter)
1467 struct net_device *netdev = adapter->netdev;
1468 int err = 0, vector = 0;
1470 if (strlen(netdev->name) < (IFNAMSIZ - 5))
1471 sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name);
1473 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
1474 err = request_irq(adapter->msix_entries[vector].vector,
1475 e1000_intr_msix_rx, 0, adapter->rx_ring->name,
1479 adapter->rx_ring->itr_register = E1000_EITR_82574(vector);
1480 adapter->rx_ring->itr_val = adapter->itr;
1483 if (strlen(netdev->name) < (IFNAMSIZ - 5))
1484 sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name);
1486 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
1487 err = request_irq(adapter->msix_entries[vector].vector,
1488 e1000_intr_msix_tx, 0, adapter->tx_ring->name,
1492 adapter->tx_ring->itr_register = E1000_EITR_82574(vector);
1493 adapter->tx_ring->itr_val = adapter->itr;
1496 err = request_irq(adapter->msix_entries[vector].vector,
1497 e1000_msix_other, 0, netdev->name, netdev);
1501 e1000_configure_msix(adapter);
1508 * e1000_request_irq - initialize interrupts
1510 * Attempts to configure interrupts using the best available
1511 * capabilities of the hardware and kernel.
1513 static int e1000_request_irq(struct e1000_adapter *adapter)
1515 struct net_device *netdev = adapter->netdev;
1518 if (adapter->msix_entries) {
1519 err = e1000_request_msix(adapter);
1522 /* fall back to MSI */
1523 e1000e_reset_interrupt_capability(adapter);
1524 adapter->int_mode = E1000E_INT_MODE_MSI;
1525 e1000e_set_interrupt_capability(adapter);
1527 if (adapter->flags & FLAG_MSI_ENABLED) {
1528 err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0,
1529 netdev->name, netdev);
1533 /* fall back to legacy interrupt */
1534 e1000e_reset_interrupt_capability(adapter);
1535 adapter->int_mode = E1000E_INT_MODE_LEGACY;
1538 err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED,
1539 netdev->name, netdev);
1541 e_err("Unable to allocate interrupt, Error: %d\n", err);
1546 static void e1000_free_irq(struct e1000_adapter *adapter)
1548 struct net_device *netdev = adapter->netdev;
1550 if (adapter->msix_entries) {
1553 free_irq(adapter->msix_entries[vector].vector, netdev);
1556 free_irq(adapter->msix_entries[vector].vector, netdev);
1559 /* Other Causes interrupt vector */
1560 free_irq(adapter->msix_entries[vector].vector, netdev);
1564 free_irq(adapter->pdev->irq, netdev);
1568 * e1000_irq_disable - Mask off interrupt generation on the NIC
1570 static void e1000_irq_disable(struct e1000_adapter *adapter)
1572 struct e1000_hw *hw = &adapter->hw;
1575 if (adapter->msix_entries)
1576 ew32(EIAC_82574, 0);
1578 synchronize_irq(adapter->pdev->irq);
1582 * e1000_irq_enable - Enable default interrupt generation settings
1584 static void e1000_irq_enable(struct e1000_adapter *adapter)
1586 struct e1000_hw *hw = &adapter->hw;
1588 if (adapter->msix_entries) {
1589 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574);
1590 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC);
1592 ew32(IMS, IMS_ENABLE_MASK);
1598 * e1000_get_hw_control - get control of the h/w from f/w
1599 * @adapter: address of board private structure
1601 * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1602 * For ASF and Pass Through versions of f/w this means that
1603 * the driver is loaded. For AMT version (only with 82573)
1604 * of the f/w this means that the network i/f is open.
1606 static void e1000_get_hw_control(struct e1000_adapter *adapter)
1608 struct e1000_hw *hw = &adapter->hw;
1612 /* Let firmware know the driver has taken over */
1613 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
1615 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
1616 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
1617 ctrl_ext = er32(CTRL_EXT);
1618 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
1623 * e1000_release_hw_control - release control of the h/w to f/w
1624 * @adapter: address of board private structure
1626 * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1627 * For ASF and Pass Through versions of f/w this means that the
1628 * driver is no longer loaded. For AMT version (only with 82573) i
1629 * of the f/w this means that the network i/f is closed.
1632 static void e1000_release_hw_control(struct e1000_adapter *adapter)
1634 struct e1000_hw *hw = &adapter->hw;
1638 /* Let firmware taken over control of h/w */
1639 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
1641 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
1642 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
1643 ctrl_ext = er32(CTRL_EXT);
1644 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
1649 * @e1000_alloc_ring - allocate memory for a ring structure
1651 static int e1000_alloc_ring_dma(struct e1000_adapter *adapter,
1652 struct e1000_ring *ring)
1654 struct pci_dev *pdev = adapter->pdev;
1656 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma,
1665 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
1666 * @adapter: board private structure
1668 * Return 0 on success, negative on failure
1670 int e1000e_setup_tx_resources(struct e1000_adapter *adapter)
1672 struct e1000_ring *tx_ring = adapter->tx_ring;
1673 int err = -ENOMEM, size;
1675 size = sizeof(struct e1000_buffer) * tx_ring->count;
1676 tx_ring->buffer_info = vmalloc(size);
1677 if (!tx_ring->buffer_info)
1679 memset(tx_ring->buffer_info, 0, size);
1681 /* round up to nearest 4K */
1682 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
1683 tx_ring->size = ALIGN(tx_ring->size, 4096);
1685 err = e1000_alloc_ring_dma(adapter, tx_ring);
1689 tx_ring->next_to_use = 0;
1690 tx_ring->next_to_clean = 0;
1694 vfree(tx_ring->buffer_info);
1695 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1700 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
1701 * @adapter: board private structure
1703 * Returns 0 on success, negative on failure
1705 int e1000e_setup_rx_resources(struct e1000_adapter *adapter)
1707 struct e1000_ring *rx_ring = adapter->rx_ring;
1708 struct e1000_buffer *buffer_info;
1709 int i, size, desc_len, err = -ENOMEM;
1711 size = sizeof(struct e1000_buffer) * rx_ring->count;
1712 rx_ring->buffer_info = vmalloc(size);
1713 if (!rx_ring->buffer_info)
1715 memset(rx_ring->buffer_info, 0, size);
1717 for (i = 0; i < rx_ring->count; i++) {
1718 buffer_info = &rx_ring->buffer_info[i];
1719 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS,
1720 sizeof(struct e1000_ps_page),
1722 if (!buffer_info->ps_pages)
1726 desc_len = sizeof(union e1000_rx_desc_packet_split);
1728 /* Round up to nearest 4K */
1729 rx_ring->size = rx_ring->count * desc_len;
1730 rx_ring->size = ALIGN(rx_ring->size, 4096);
1732 err = e1000_alloc_ring_dma(adapter, rx_ring);
1736 rx_ring->next_to_clean = 0;
1737 rx_ring->next_to_use = 0;
1738 rx_ring->rx_skb_top = NULL;
1743 for (i = 0; i < rx_ring->count; i++) {
1744 buffer_info = &rx_ring->buffer_info[i];
1745 kfree(buffer_info->ps_pages);
1748 vfree(rx_ring->buffer_info);
1749 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1754 * e1000_clean_tx_ring - Free Tx Buffers
1755 * @adapter: board private structure
1757 static void e1000_clean_tx_ring(struct e1000_adapter *adapter)
1759 struct e1000_ring *tx_ring = adapter->tx_ring;
1760 struct e1000_buffer *buffer_info;
1764 for (i = 0; i < tx_ring->count; i++) {
1765 buffer_info = &tx_ring->buffer_info[i];
1766 e1000_put_txbuf(adapter, buffer_info);
1769 size = sizeof(struct e1000_buffer) * tx_ring->count;
1770 memset(tx_ring->buffer_info, 0, size);
1772 memset(tx_ring->desc, 0, tx_ring->size);
1774 tx_ring->next_to_use = 0;
1775 tx_ring->next_to_clean = 0;
1777 writel(0, adapter->hw.hw_addr + tx_ring->head);
1778 writel(0, adapter->hw.hw_addr + tx_ring->tail);
1782 * e1000e_free_tx_resources - Free Tx Resources per Queue
1783 * @adapter: board private structure
1785 * Free all transmit software resources
1787 void e1000e_free_tx_resources(struct e1000_adapter *adapter)
1789 struct pci_dev *pdev = adapter->pdev;
1790 struct e1000_ring *tx_ring = adapter->tx_ring;
1792 e1000_clean_tx_ring(adapter);
1794 vfree(tx_ring->buffer_info);
1795 tx_ring->buffer_info = NULL;
1797 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
1799 tx_ring->desc = NULL;
1803 * e1000e_free_rx_resources - Free Rx Resources
1804 * @adapter: board private structure
1806 * Free all receive software resources
1809 void e1000e_free_rx_resources(struct e1000_adapter *adapter)
1811 struct pci_dev *pdev = adapter->pdev;
1812 struct e1000_ring *rx_ring = adapter->rx_ring;
1815 e1000_clean_rx_ring(adapter);
1817 for (i = 0; i < rx_ring->count; i++) {
1818 kfree(rx_ring->buffer_info[i].ps_pages);
1821 vfree(rx_ring->buffer_info);
1822 rx_ring->buffer_info = NULL;
1824 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
1826 rx_ring->desc = NULL;
1830 * e1000_update_itr - update the dynamic ITR value based on statistics
1831 * @adapter: pointer to adapter
1832 * @itr_setting: current adapter->itr
1833 * @packets: the number of packets during this measurement interval
1834 * @bytes: the number of bytes during this measurement interval
1836 * Stores a new ITR value based on packets and byte
1837 * counts during the last interrupt. The advantage of per interrupt
1838 * computation is faster updates and more accurate ITR for the current
1839 * traffic pattern. Constants in this function were computed
1840 * based on theoretical maximum wire speed and thresholds were set based
1841 * on testing data as well as attempting to minimize response time
1842 * while increasing bulk throughput. This functionality is controlled
1843 * by the InterruptThrottleRate module parameter.
1845 static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
1846 u16 itr_setting, int packets,
1849 unsigned int retval = itr_setting;
1852 goto update_itr_done;
1854 switch (itr_setting) {
1855 case lowest_latency:
1856 /* handle TSO and jumbo frames */
1857 if (bytes/packets > 8000)
1858 retval = bulk_latency;
1859 else if ((packets < 5) && (bytes > 512)) {
1860 retval = low_latency;
1863 case low_latency: /* 50 usec aka 20000 ints/s */
1864 if (bytes > 10000) {
1865 /* this if handles the TSO accounting */
1866 if (bytes/packets > 8000) {
1867 retval = bulk_latency;
1868 } else if ((packets < 10) || ((bytes/packets) > 1200)) {
1869 retval = bulk_latency;
1870 } else if ((packets > 35)) {
1871 retval = lowest_latency;
1873 } else if (bytes/packets > 2000) {
1874 retval = bulk_latency;
1875 } else if (packets <= 2 && bytes < 512) {
1876 retval = lowest_latency;
1879 case bulk_latency: /* 250 usec aka 4000 ints/s */
1880 if (bytes > 25000) {
1882 retval = low_latency;
1884 } else if (bytes < 6000) {
1885 retval = low_latency;
1894 static void e1000_set_itr(struct e1000_adapter *adapter)
1896 struct e1000_hw *hw = &adapter->hw;
1898 u32 new_itr = adapter->itr;
1900 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
1901 if (adapter->link_speed != SPEED_1000) {
1907 adapter->tx_itr = e1000_update_itr(adapter,
1909 adapter->total_tx_packets,
1910 adapter->total_tx_bytes);
1911 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1912 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
1913 adapter->tx_itr = low_latency;
1915 adapter->rx_itr = e1000_update_itr(adapter,
1917 adapter->total_rx_packets,
1918 adapter->total_rx_bytes);
1919 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1920 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
1921 adapter->rx_itr = low_latency;
1923 current_itr = max(adapter->rx_itr, adapter->tx_itr);
1925 switch (current_itr) {
1926 /* counts and packets in update_itr are dependent on these numbers */
1927 case lowest_latency:
1931 new_itr = 20000; /* aka hwitr = ~200 */
1941 if (new_itr != adapter->itr) {
1943 * this attempts to bias the interrupt rate towards Bulk
1944 * by adding intermediate steps when interrupt rate is
1947 new_itr = new_itr > adapter->itr ?
1948 min(adapter->itr + (new_itr >> 2), new_itr) :
1950 adapter->itr = new_itr;
1951 adapter->rx_ring->itr_val = new_itr;
1952 if (adapter->msix_entries)
1953 adapter->rx_ring->set_itr = 1;
1955 ew32(ITR, 1000000000 / (new_itr * 256));
1960 * e1000_alloc_queues - Allocate memory for all rings
1961 * @adapter: board private structure to initialize
1963 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter)
1965 adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
1966 if (!adapter->tx_ring)
1969 adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
1970 if (!adapter->rx_ring)
1975 e_err("Unable to allocate memory for queues\n");
1976 kfree(adapter->rx_ring);
1977 kfree(adapter->tx_ring);
1982 * e1000_clean - NAPI Rx polling callback
1983 * @napi: struct associated with this polling callback
1984 * @budget: amount of packets driver is allowed to process this poll
1986 static int e1000_clean(struct napi_struct *napi, int budget)
1988 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
1989 struct e1000_hw *hw = &adapter->hw;
1990 struct net_device *poll_dev = adapter->netdev;
1991 int tx_cleaned = 1, work_done = 0;
1993 adapter = netdev_priv(poll_dev);
1995 if (adapter->msix_entries &&
1996 !(adapter->rx_ring->ims_val & adapter->tx_ring->ims_val))
1999 tx_cleaned = e1000_clean_tx_irq(adapter);
2002 adapter->clean_rx(adapter, &work_done, budget);
2007 /* If budget not fully consumed, exit the polling mode */
2008 if (work_done < budget) {
2009 if (adapter->itr_setting & 3)
2010 e1000_set_itr(adapter);
2011 napi_complete(napi);
2012 if (!test_bit(__E1000_DOWN, &adapter->state)) {
2013 if (adapter->msix_entries)
2014 ew32(IMS, adapter->rx_ring->ims_val);
2016 e1000_irq_enable(adapter);
2023 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
2025 struct e1000_adapter *adapter = netdev_priv(netdev);
2026 struct e1000_hw *hw = &adapter->hw;
2029 /* don't update vlan cookie if already programmed */
2030 if ((adapter->hw.mng_cookie.status &
2031 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2032 (vid == adapter->mng_vlan_id))
2035 /* add VID to filter table */
2036 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2037 index = (vid >> 5) & 0x7F;
2038 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2039 vfta |= (1 << (vid & 0x1F));
2040 hw->mac.ops.write_vfta(hw, index, vfta);
2044 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
2046 struct e1000_adapter *adapter = netdev_priv(netdev);
2047 struct e1000_hw *hw = &adapter->hw;
2050 if (!test_bit(__E1000_DOWN, &adapter->state))
2051 e1000_irq_disable(adapter);
2052 vlan_group_set_device(adapter->vlgrp, vid, NULL);
2054 if (!test_bit(__E1000_DOWN, &adapter->state))
2055 e1000_irq_enable(adapter);
2057 if ((adapter->hw.mng_cookie.status &
2058 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2059 (vid == adapter->mng_vlan_id)) {
2060 /* release control to f/w */
2061 e1000_release_hw_control(adapter);
2065 /* remove VID from filter table */
2066 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2067 index = (vid >> 5) & 0x7F;
2068 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2069 vfta &= ~(1 << (vid & 0x1F));
2070 hw->mac.ops.write_vfta(hw, index, vfta);
2074 static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
2076 struct net_device *netdev = adapter->netdev;
2077 u16 vid = adapter->hw.mng_cookie.vlan_id;
2078 u16 old_vid = adapter->mng_vlan_id;
2080 if (!adapter->vlgrp)
2083 if (!vlan_group_get_device(adapter->vlgrp, vid)) {
2084 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2085 if (adapter->hw.mng_cookie.status &
2086 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
2087 e1000_vlan_rx_add_vid(netdev, vid);
2088 adapter->mng_vlan_id = vid;
2091 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) &&
2093 !vlan_group_get_device(adapter->vlgrp, old_vid))
2094 e1000_vlan_rx_kill_vid(netdev, old_vid);
2096 adapter->mng_vlan_id = vid;
2101 static void e1000_vlan_rx_register(struct net_device *netdev,
2102 struct vlan_group *grp)
2104 struct e1000_adapter *adapter = netdev_priv(netdev);
2105 struct e1000_hw *hw = &adapter->hw;
2108 if (!test_bit(__E1000_DOWN, &adapter->state))
2109 e1000_irq_disable(adapter);
2110 adapter->vlgrp = grp;
2113 /* enable VLAN tag insert/strip */
2115 ctrl |= E1000_CTRL_VME;
2118 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2119 /* enable VLAN receive filtering */
2121 rctl &= ~E1000_RCTL_CFIEN;
2123 e1000_update_mng_vlan(adapter);
2126 /* disable VLAN tag insert/strip */
2128 ctrl &= ~E1000_CTRL_VME;
2131 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2132 if (adapter->mng_vlan_id !=
2133 (u16)E1000_MNG_VLAN_NONE) {
2134 e1000_vlan_rx_kill_vid(netdev,
2135 adapter->mng_vlan_id);
2136 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2141 if (!test_bit(__E1000_DOWN, &adapter->state))
2142 e1000_irq_enable(adapter);
2145 static void e1000_restore_vlan(struct e1000_adapter *adapter)
2149 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
2151 if (!adapter->vlgrp)
2154 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
2155 if (!vlan_group_get_device(adapter->vlgrp, vid))
2157 e1000_vlan_rx_add_vid(adapter->netdev, vid);
2161 static void e1000_init_manageability(struct e1000_adapter *adapter)
2163 struct e1000_hw *hw = &adapter->hw;
2166 if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
2172 * enable receiving management packets to the host. this will probably
2173 * generate destination unreachable messages from the host OS, but
2174 * the packets will be handled on SMBUS
2176 manc |= E1000_MANC_EN_MNG2HOST;
2177 manc2h = er32(MANC2H);
2178 #define E1000_MNG2HOST_PORT_623 (1 << 5)
2179 #define E1000_MNG2HOST_PORT_664 (1 << 6)
2180 manc2h |= E1000_MNG2HOST_PORT_623;
2181 manc2h |= E1000_MNG2HOST_PORT_664;
2182 ew32(MANC2H, manc2h);
2187 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
2188 * @adapter: board private structure
2190 * Configure the Tx unit of the MAC after a reset.
2192 static void e1000_configure_tx(struct e1000_adapter *adapter)
2194 struct e1000_hw *hw = &adapter->hw;
2195 struct e1000_ring *tx_ring = adapter->tx_ring;
2197 u32 tdlen, tctl, tipg, tarc;
2200 /* Setup the HW Tx Head and Tail descriptor pointers */
2201 tdba = tx_ring->dma;
2202 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc);
2203 ew32(TDBAL, (tdba & DMA_BIT_MASK(32)));
2204 ew32(TDBAH, (tdba >> 32));
2208 tx_ring->head = E1000_TDH;
2209 tx_ring->tail = E1000_TDT;
2211 /* Set the default values for the Tx Inter Packet Gap timer */
2212 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; /* 8 */
2213 ipgr1 = DEFAULT_82543_TIPG_IPGR1; /* 8 */
2214 ipgr2 = DEFAULT_82543_TIPG_IPGR2; /* 6 */
2216 if (adapter->flags & FLAG_TIPG_MEDIUM_FOR_80003ESLAN)
2217 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; /* 7 */
2219 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
2220 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
2223 /* Set the Tx Interrupt Delay register */
2224 ew32(TIDV, adapter->tx_int_delay);
2225 /* Tx irq moderation */
2226 ew32(TADV, adapter->tx_abs_int_delay);
2228 /* Program the Transmit Control Register */
2230 tctl &= ~E1000_TCTL_CT;
2231 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
2232 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
2234 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) {
2235 tarc = er32(TARC(0));
2237 * set the speed mode bit, we'll clear it if we're not at
2238 * gigabit link later
2240 #define SPEED_MODE_BIT (1 << 21)
2241 tarc |= SPEED_MODE_BIT;
2242 ew32(TARC(0), tarc);
2245 /* errata: program both queues to unweighted RR */
2246 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) {
2247 tarc = er32(TARC(0));
2249 ew32(TARC(0), tarc);
2250 tarc = er32(TARC(1));
2252 ew32(TARC(1), tarc);
2255 /* Setup Transmit Descriptor Settings for eop descriptor */
2256 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
2258 /* only set IDE if we are delaying interrupts using the timers */
2259 if (adapter->tx_int_delay)
2260 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
2262 /* enable Report Status bit */
2263 adapter->txd_cmd |= E1000_TXD_CMD_RS;
2267 e1000e_config_collision_dist(hw);
2269 adapter->tx_queue_len = adapter->netdev->tx_queue_len;
2273 * e1000_setup_rctl - configure the receive control registers
2274 * @adapter: Board private structure
2276 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2277 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2278 static void e1000_setup_rctl(struct e1000_adapter *adapter)
2280 struct e1000_hw *hw = &adapter->hw;
2285 /* Program MC offset vector base */
2287 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2288 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
2289 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
2290 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
2292 /* Do not Store bad packets */
2293 rctl &= ~E1000_RCTL_SBP;
2295 /* Enable Long Packet receive */
2296 if (adapter->netdev->mtu <= ETH_DATA_LEN)
2297 rctl &= ~E1000_RCTL_LPE;
2299 rctl |= E1000_RCTL_LPE;
2301 /* Some systems expect that the CRC is included in SMBUS traffic. The
2302 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2303 * host memory when this is enabled
2305 if (adapter->flags2 & FLAG2_CRC_STRIPPING)
2306 rctl |= E1000_RCTL_SECRC;
2308 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
2309 if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) {
2312 e1e_rphy(hw, PHY_REG(770, 26), &phy_data);
2314 phy_data |= (1 << 2);
2315 e1e_wphy(hw, PHY_REG(770, 26), phy_data);
2317 e1e_rphy(hw, 22, &phy_data);
2319 phy_data |= (1 << 14);
2320 e1e_wphy(hw, 0x10, 0x2823);
2321 e1e_wphy(hw, 0x11, 0x0003);
2322 e1e_wphy(hw, 22, phy_data);
2325 /* Setup buffer sizes */
2326 rctl &= ~E1000_RCTL_SZ_4096;
2327 rctl |= E1000_RCTL_BSEX;
2328 switch (adapter->rx_buffer_len) {
2330 rctl |= E1000_RCTL_SZ_256;
2331 rctl &= ~E1000_RCTL_BSEX;
2334 rctl |= E1000_RCTL_SZ_512;
2335 rctl &= ~E1000_RCTL_BSEX;
2338 rctl |= E1000_RCTL_SZ_1024;
2339 rctl &= ~E1000_RCTL_BSEX;
2343 rctl |= E1000_RCTL_SZ_2048;
2344 rctl &= ~E1000_RCTL_BSEX;
2347 rctl |= E1000_RCTL_SZ_4096;
2350 rctl |= E1000_RCTL_SZ_8192;
2353 rctl |= E1000_RCTL_SZ_16384;
2358 * 82571 and greater support packet-split where the protocol
2359 * header is placed in skb->data and the packet data is
2360 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2361 * In the case of a non-split, skb->data is linearly filled,
2362 * followed by the page buffers. Therefore, skb->data is
2363 * sized to hold the largest protocol header.
2365 * allocations using alloc_page take too long for regular MTU
2366 * so only enable packet split for jumbo frames
2368 * Using pages when the page size is greater than 16k wastes
2369 * a lot of memory, since we allocate 3 pages at all times
2372 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
2373 if (!(adapter->flags & FLAG_IS_ICH) && (pages <= 3) &&
2374 (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE))
2375 adapter->rx_ps_pages = pages;
2377 adapter->rx_ps_pages = 0;
2379 if (adapter->rx_ps_pages) {
2380 /* Configure extra packet-split registers */
2381 rfctl = er32(RFCTL);
2382 rfctl |= E1000_RFCTL_EXTEN;
2384 * disable packet split support for IPv6 extension headers,
2385 * because some malformed IPv6 headers can hang the Rx
2387 rfctl |= (E1000_RFCTL_IPV6_EX_DIS |
2388 E1000_RFCTL_NEW_IPV6_EXT_DIS);
2392 /* Enable Packet split descriptors */
2393 rctl |= E1000_RCTL_DTYP_PS;
2395 psrctl |= adapter->rx_ps_bsize0 >>
2396 E1000_PSRCTL_BSIZE0_SHIFT;
2398 switch (adapter->rx_ps_pages) {
2400 psrctl |= PAGE_SIZE <<
2401 E1000_PSRCTL_BSIZE3_SHIFT;
2403 psrctl |= PAGE_SIZE <<
2404 E1000_PSRCTL_BSIZE2_SHIFT;
2406 psrctl |= PAGE_SIZE >>
2407 E1000_PSRCTL_BSIZE1_SHIFT;
2411 ew32(PSRCTL, psrctl);
2415 /* just started the receive unit, no need to restart */
2416 adapter->flags &= ~FLAG_RX_RESTART_NOW;
2420 * e1000_configure_rx - Configure Receive Unit after Reset
2421 * @adapter: board private structure
2423 * Configure the Rx unit of the MAC after a reset.
2425 static void e1000_configure_rx(struct e1000_adapter *adapter)
2427 struct e1000_hw *hw = &adapter->hw;
2428 struct e1000_ring *rx_ring = adapter->rx_ring;
2430 u32 rdlen, rctl, rxcsum, ctrl_ext;
2432 if (adapter->rx_ps_pages) {
2433 /* this is a 32 byte descriptor */
2434 rdlen = rx_ring->count *
2435 sizeof(union e1000_rx_desc_packet_split);
2436 adapter->clean_rx = e1000_clean_rx_irq_ps;
2437 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
2438 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) {
2439 rdlen = rx_ring->count * sizeof(struct e1000_rx_desc);
2440 adapter->clean_rx = e1000_clean_jumbo_rx_irq;
2441 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
2443 rdlen = rx_ring->count * sizeof(struct e1000_rx_desc);
2444 adapter->clean_rx = e1000_clean_rx_irq;
2445 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
2448 /* disable receives while setting up the descriptors */
2450 ew32(RCTL, rctl & ~E1000_RCTL_EN);
2454 /* set the Receive Delay Timer Register */
2455 ew32(RDTR, adapter->rx_int_delay);
2457 /* irq moderation */
2458 ew32(RADV, adapter->rx_abs_int_delay);
2459 if (adapter->itr_setting != 0)
2460 ew32(ITR, 1000000000 / (adapter->itr * 256));
2462 ctrl_ext = er32(CTRL_EXT);
2463 /* Auto-Mask interrupts upon ICR access */
2464 ctrl_ext |= E1000_CTRL_EXT_IAME;
2465 ew32(IAM, 0xffffffff);
2466 ew32(CTRL_EXT, ctrl_ext);
2470 * Setup the HW Rx Head and Tail Descriptor Pointers and
2471 * the Base and Length of the Rx Descriptor Ring
2473 rdba = rx_ring->dma;
2474 ew32(RDBAL, (rdba & DMA_BIT_MASK(32)));
2475 ew32(RDBAH, (rdba >> 32));
2479 rx_ring->head = E1000_RDH;
2480 rx_ring->tail = E1000_RDT;
2482 /* Enable Receive Checksum Offload for TCP and UDP */
2483 rxcsum = er32(RXCSUM);
2484 if (adapter->flags & FLAG_RX_CSUM_ENABLED) {
2485 rxcsum |= E1000_RXCSUM_TUOFL;
2488 * IPv4 payload checksum for UDP fragments must be
2489 * used in conjunction with packet-split.
2491 if (adapter->rx_ps_pages)
2492 rxcsum |= E1000_RXCSUM_IPPCSE;
2494 rxcsum &= ~E1000_RXCSUM_TUOFL;
2495 /* no need to clear IPPCSE as it defaults to 0 */
2497 ew32(RXCSUM, rxcsum);
2500 * Enable early receives on supported devices, only takes effect when
2501 * packet size is equal or larger than the specified value (in 8 byte
2502 * units), e.g. using jumbo frames when setting to E1000_ERT_2048
2504 if (adapter->flags & FLAG_HAS_ERT) {
2505 if (adapter->netdev->mtu > ETH_DATA_LEN) {
2506 u32 rxdctl = er32(RXDCTL(0));
2507 ew32(RXDCTL(0), rxdctl | 0x3);
2508 ew32(ERT, E1000_ERT_2048 | (1 << 13));
2510 * With jumbo frames and early-receive enabled,
2511 * excessive C-state transition latencies result in
2512 * dropped transactions.
2514 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY,
2515 adapter->netdev->name, 55);
2517 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY,
2518 adapter->netdev->name,
2519 PM_QOS_DEFAULT_VALUE);
2523 /* Enable Receives */
2528 * e1000_update_mc_addr_list - Update Multicast addresses
2529 * @hw: pointer to the HW structure
2530 * @mc_addr_list: array of multicast addresses to program
2531 * @mc_addr_count: number of multicast addresses to program
2532 * @rar_used_count: the first RAR register free to program
2533 * @rar_count: total number of supported Receive Address Registers
2535 * Updates the Receive Address Registers and Multicast Table Array.
2536 * The caller must have a packed mc_addr_list of multicast addresses.
2537 * The parameter rar_count will usually be hw->mac.rar_entry_count
2538 * unless there are workarounds that change this. Currently no func pointer
2539 * exists and all implementations are handled in the generic version of this
2542 static void e1000_update_mc_addr_list(struct e1000_hw *hw, u8 *mc_addr_list,
2543 u32 mc_addr_count, u32 rar_used_count,
2546 hw->mac.ops.update_mc_addr_list(hw, mc_addr_list, mc_addr_count,
2547 rar_used_count, rar_count);
2551 * e1000_set_multi - Multicast and Promiscuous mode set
2552 * @netdev: network interface device structure
2554 * The set_multi entry point is called whenever the multicast address
2555 * list or the network interface flags are updated. This routine is
2556 * responsible for configuring the hardware for proper multicast,
2557 * promiscuous mode, and all-multi behavior.
2559 static void e1000_set_multi(struct net_device *netdev)
2561 struct e1000_adapter *adapter = netdev_priv(netdev);
2562 struct e1000_hw *hw = &adapter->hw;
2563 struct e1000_mac_info *mac = &hw->mac;
2564 struct dev_mc_list *mc_ptr;
2569 /* Check for Promiscuous and All Multicast modes */
2573 if (netdev->flags & IFF_PROMISC) {
2574 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
2575 rctl &= ~E1000_RCTL_VFE;
2577 if (netdev->flags & IFF_ALLMULTI) {
2578 rctl |= E1000_RCTL_MPE;
2579 rctl &= ~E1000_RCTL_UPE;
2581 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
2583 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
2584 rctl |= E1000_RCTL_VFE;
2589 if (netdev->mc_count) {
2590 mta_list = kmalloc(netdev->mc_count * 6, GFP_ATOMIC);
2594 /* prepare a packed array of only addresses. */
2595 mc_ptr = netdev->mc_list;
2597 for (i = 0; i < netdev->mc_count; i++) {
2600 memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr,
2602 mc_ptr = mc_ptr->next;
2605 e1000_update_mc_addr_list(hw, mta_list, i, 1,
2606 mac->rar_entry_count);
2610 * if we're called from probe, we might not have
2611 * anything to do here, so clear out the list
2613 e1000_update_mc_addr_list(hw, NULL, 0, 1, mac->rar_entry_count);
2618 * e1000_configure - configure the hardware for Rx and Tx
2619 * @adapter: private board structure
2621 static void e1000_configure(struct e1000_adapter *adapter)
2623 e1000_set_multi(adapter->netdev);
2625 e1000_restore_vlan(adapter);
2626 e1000_init_manageability(adapter);
2628 e1000_configure_tx(adapter);
2629 e1000_setup_rctl(adapter);
2630 e1000_configure_rx(adapter);
2631 adapter->alloc_rx_buf(adapter, e1000_desc_unused(adapter->rx_ring));
2635 * e1000e_power_up_phy - restore link in case the phy was powered down
2636 * @adapter: address of board private structure
2638 * The phy may be powered down to save power and turn off link when the
2639 * driver is unloaded and wake on lan is not enabled (among others)
2640 * *** this routine MUST be followed by a call to e1000e_reset ***
2642 void e1000e_power_up_phy(struct e1000_adapter *adapter)
2646 /* Just clear the power down bit to wake the phy back up */
2647 if (adapter->hw.phy.media_type == e1000_media_type_copper) {
2649 * According to the manual, the phy will retain its
2650 * settings across a power-down/up cycle
2652 e1e_rphy(&adapter->hw, PHY_CONTROL, &mii_reg);
2653 mii_reg &= ~MII_CR_POWER_DOWN;
2654 e1e_wphy(&adapter->hw, PHY_CONTROL, mii_reg);
2657 adapter->hw.mac.ops.setup_link(&adapter->hw);
2661 * e1000_power_down_phy - Power down the PHY
2663 * Power down the PHY so no link is implied when interface is down
2664 * The PHY cannot be powered down is management or WoL is active
2666 static void e1000_power_down_phy(struct e1000_adapter *adapter)
2668 struct e1000_hw *hw = &adapter->hw;
2671 /* WoL is enabled */
2675 /* non-copper PHY? */
2676 if (adapter->hw.phy.media_type != e1000_media_type_copper)
2679 /* reset is blocked because of a SoL/IDER session */
2680 if (e1000e_check_mng_mode(hw) || e1000_check_reset_block(hw))
2683 /* manageability (AMT) is enabled */
2684 if (er32(MANC) & E1000_MANC_SMBUS_EN)
2687 /* power down the PHY */
2688 e1e_rphy(hw, PHY_CONTROL, &mii_reg);
2689 mii_reg |= MII_CR_POWER_DOWN;
2690 e1e_wphy(hw, PHY_CONTROL, mii_reg);
2695 * e1000e_reset - bring the hardware into a known good state
2697 * This function boots the hardware and enables some settings that
2698 * require a configuration cycle of the hardware - those cannot be
2699 * set/changed during runtime. After reset the device needs to be
2700 * properly configured for Rx, Tx etc.
2702 void e1000e_reset(struct e1000_adapter *adapter)
2704 struct e1000_mac_info *mac = &adapter->hw.mac;
2705 struct e1000_fc_info *fc = &adapter->hw.fc;
2706 struct e1000_hw *hw = &adapter->hw;
2707 u32 tx_space, min_tx_space, min_rx_space;
2708 u32 pba = adapter->pba;
2711 /* reset Packet Buffer Allocation to default */
2714 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
2716 * To maintain wire speed transmits, the Tx FIFO should be
2717 * large enough to accommodate two full transmit packets,
2718 * rounded up to the next 1KB and expressed in KB. Likewise,
2719 * the Rx FIFO should be large enough to accommodate at least
2720 * one full receive packet and is similarly rounded up and
2724 /* upper 16 bits has Tx packet buffer allocation size in KB */
2725 tx_space = pba >> 16;
2726 /* lower 16 bits has Rx packet buffer allocation size in KB */
2729 * the Tx fifo also stores 16 bytes of information about the tx
2730 * but don't include ethernet FCS because hardware appends it
2732 min_tx_space = (adapter->max_frame_size +
2733 sizeof(struct e1000_tx_desc) -
2735 min_tx_space = ALIGN(min_tx_space, 1024);
2736 min_tx_space >>= 10;
2737 /* software strips receive CRC, so leave room for it */
2738 min_rx_space = adapter->max_frame_size;
2739 min_rx_space = ALIGN(min_rx_space, 1024);
2740 min_rx_space >>= 10;
2743 * If current Tx allocation is less than the min Tx FIFO size,
2744 * and the min Tx FIFO size is less than the current Rx FIFO
2745 * allocation, take space away from current Rx allocation
2747 if ((tx_space < min_tx_space) &&
2748 ((min_tx_space - tx_space) < pba)) {
2749 pba -= min_tx_space - tx_space;
2752 * if short on Rx space, Rx wins and must trump tx
2753 * adjustment or use Early Receive if available
2755 if ((pba < min_rx_space) &&
2756 (!(adapter->flags & FLAG_HAS_ERT)))
2757 /* ERT enabled in e1000_configure_rx */
2766 * flow control settings
2768 * The high water mark must be low enough to fit one full frame
2769 * (or the size used for early receive) above it in the Rx FIFO.
2770 * Set it to the lower of:
2771 * - 90% of the Rx FIFO size, and
2772 * - the full Rx FIFO size minus the early receive size (for parts
2773 * with ERT support assuming ERT set to E1000_ERT_2048), or
2774 * - the full Rx FIFO size minus one full frame
2776 if (hw->mac.type == e1000_pchlan) {
2778 * Workaround PCH LOM adapter hangs with certain network
2779 * loads. If hangs persist, try disabling Tx flow control.
2781 if (adapter->netdev->mtu > ETH_DATA_LEN) {
2782 fc->high_water = 0x3500;
2783 fc->low_water = 0x1500;
2785 fc->high_water = 0x5000;
2786 fc->low_water = 0x3000;
2789 if ((adapter->flags & FLAG_HAS_ERT) &&
2790 (adapter->netdev->mtu > ETH_DATA_LEN))
2791 hwm = min(((pba << 10) * 9 / 10),
2792 ((pba << 10) - (E1000_ERT_2048 << 3)));
2794 hwm = min(((pba << 10) * 9 / 10),
2795 ((pba << 10) - adapter->max_frame_size));
2797 fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */
2798 fc->low_water = fc->high_water - 8;
2801 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME)
2802 fc->pause_time = 0xFFFF;
2804 fc->pause_time = E1000_FC_PAUSE_TIME;
2806 fc->current_mode = fc->requested_mode;
2808 /* Allow time for pending master requests to run */
2809 mac->ops.reset_hw(hw);
2812 * For parts with AMT enabled, let the firmware know
2813 * that the network interface is in control
2815 if (adapter->flags & FLAG_HAS_AMT)
2816 e1000_get_hw_control(adapter);
2819 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP)
2820 e1e_wphy(&adapter->hw, BM_WUC, 0);
2822 if (mac->ops.init_hw(hw))
2823 e_err("Hardware Error\n");
2825 /* additional part of the flow-control workaround above */
2826 if (hw->mac.type == e1000_pchlan)
2827 ew32(FCRTV_PCH, 0x1000);
2829 e1000_update_mng_vlan(adapter);
2831 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
2832 ew32(VET, ETH_P_8021Q);
2834 e1000e_reset_adaptive(hw);
2835 e1000_get_phy_info(hw);
2837 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) &&
2838 !(adapter->flags & FLAG_SMART_POWER_DOWN)) {
2841 * speed up time to link by disabling smart power down, ignore
2842 * the return value of this function because there is nothing
2843 * different we would do if it failed
2845 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
2846 phy_data &= ~IGP02E1000_PM_SPD;
2847 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
2851 int e1000e_up(struct e1000_adapter *adapter)
2853 struct e1000_hw *hw = &adapter->hw;
2855 /* DMA latency requirement to workaround early-receive/jumbo issue */
2856 if (adapter->flags & FLAG_HAS_ERT)
2857 pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY,
2858 adapter->netdev->name,
2859 PM_QOS_DEFAULT_VALUE);
2861 /* hardware has been reset, we need to reload some things */
2862 e1000_configure(adapter);
2864 clear_bit(__E1000_DOWN, &adapter->state);
2866 napi_enable(&adapter->napi);
2867 if (adapter->msix_entries)
2868 e1000_configure_msix(adapter);
2869 e1000_irq_enable(adapter);
2871 netif_wake_queue(adapter->netdev);
2873 /* fire a link change interrupt to start the watchdog */
2874 ew32(ICS, E1000_ICS_LSC);
2878 void e1000e_down(struct e1000_adapter *adapter)
2880 struct net_device *netdev = adapter->netdev;
2881 struct e1000_hw *hw = &adapter->hw;
2885 * signal that we're down so the interrupt handler does not
2886 * reschedule our watchdog timer
2888 set_bit(__E1000_DOWN, &adapter->state);
2890 /* disable receives in the hardware */
2892 ew32(RCTL, rctl & ~E1000_RCTL_EN);
2893 /* flush and sleep below */
2895 netif_stop_queue(netdev);
2897 /* disable transmits in the hardware */
2899 tctl &= ~E1000_TCTL_EN;
2901 /* flush both disables and wait for them to finish */
2905 napi_disable(&adapter->napi);
2906 e1000_irq_disable(adapter);
2908 del_timer_sync(&adapter->watchdog_timer);
2909 del_timer_sync(&adapter->phy_info_timer);
2911 netdev->tx_queue_len = adapter->tx_queue_len;
2912 netif_carrier_off(netdev);
2913 adapter->link_speed = 0;
2914 adapter->link_duplex = 0;
2916 if (!pci_channel_offline(adapter->pdev))
2917 e1000e_reset(adapter);
2918 e1000_clean_tx_ring(adapter);
2919 e1000_clean_rx_ring(adapter);
2921 if (adapter->flags & FLAG_HAS_ERT)
2922 pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY,
2923 adapter->netdev->name);
2926 * TODO: for power management, we could drop the link and
2927 * pci_disable_device here.
2931 void e1000e_reinit_locked(struct e1000_adapter *adapter)
2934 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
2936 e1000e_down(adapter);
2938 clear_bit(__E1000_RESETTING, &adapter->state);
2942 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
2943 * @adapter: board private structure to initialize
2945 * e1000_sw_init initializes the Adapter private data structure.
2946 * Fields are initialized based on PCI device information and
2947 * OS network device settings (MTU size).
2949 static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
2951 struct net_device *netdev = adapter->netdev;
2953 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
2954 adapter->rx_ps_bsize0 = 128;
2955 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
2956 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
2958 e1000e_set_interrupt_capability(adapter);
2960 if (e1000_alloc_queues(adapter))
2963 /* Explicitly disable IRQ since the NIC can be in any state. */
2964 e1000_irq_disable(adapter);
2966 set_bit(__E1000_DOWN, &adapter->state);
2971 * e1000_intr_msi_test - Interrupt Handler
2972 * @irq: interrupt number
2973 * @data: pointer to a network interface device structure
2975 static irqreturn_t e1000_intr_msi_test(int irq, void *data)
2977 struct net_device *netdev = data;
2978 struct e1000_adapter *adapter = netdev_priv(netdev);
2979 struct e1000_hw *hw = &adapter->hw;
2980 u32 icr = er32(ICR);
2982 e_dbg("icr is %08X\n", icr);
2983 if (icr & E1000_ICR_RXSEQ) {
2984 adapter->flags &= ~FLAG_MSI_TEST_FAILED;
2992 * e1000_test_msi_interrupt - Returns 0 for successful test
2993 * @adapter: board private struct
2995 * code flow taken from tg3.c
2997 static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
2999 struct net_device *netdev = adapter->netdev;
3000 struct e1000_hw *hw = &adapter->hw;
3003 /* poll_enable hasn't been called yet, so don't need disable */
3004 /* clear any pending events */
3007 /* free the real vector and request a test handler */
3008 e1000_free_irq(adapter);
3009 e1000e_reset_interrupt_capability(adapter);
3011 /* Assume that the test fails, if it succeeds then the test
3012 * MSI irq handler will unset this flag */
3013 adapter->flags |= FLAG_MSI_TEST_FAILED;
3015 err = pci_enable_msi(adapter->pdev);
3017 goto msi_test_failed;
3019 err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0,
3020 netdev->name, netdev);
3022 pci_disable_msi(adapter->pdev);
3023 goto msi_test_failed;
3028 e1000_irq_enable(adapter);
3030 /* fire an unusual interrupt on the test handler */
3031 ew32(ICS, E1000_ICS_RXSEQ);
3035 e1000_irq_disable(adapter);
3039 if (adapter->flags & FLAG_MSI_TEST_FAILED) {
3040 adapter->int_mode = E1000E_INT_MODE_LEGACY;
3042 e_info("MSI interrupt test failed!\n");
3045 free_irq(adapter->pdev->irq, netdev);
3046 pci_disable_msi(adapter->pdev);
3049 goto msi_test_failed;
3051 /* okay so the test worked, restore settings */
3052 e_dbg("MSI interrupt test succeeded!\n");
3054 e1000e_set_interrupt_capability(adapter);
3055 e1000_request_irq(adapter);
3060 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3061 * @adapter: board private struct
3063 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3065 static int e1000_test_msi(struct e1000_adapter *adapter)
3070 if (!(adapter->flags & FLAG_MSI_ENABLED))
3073 /* disable SERR in case the MSI write causes a master abort */
3074 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
3075 pci_write_config_word(adapter->pdev, PCI_COMMAND,
3076 pci_cmd & ~PCI_COMMAND_SERR);
3078 err = e1000_test_msi_interrupt(adapter);
3080 /* restore previous setting of command word */
3081 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);
3087 /* EIO means MSI test failed */
3091 /* back to INTx mode */
3092 e_warn("MSI interrupt test failed, using legacy interrupt.\n");
3094 e1000_free_irq(adapter);
3096 err = e1000_request_irq(adapter);
3102 * e1000_open - Called when a network interface is made active
3103 * @netdev: network interface device structure
3105 * Returns 0 on success, negative value on failure
3107 * The open entry point is called when a network interface is made
3108 * active by the system (IFF_UP). At this point all resources needed
3109 * for transmit and receive operations are allocated, the interrupt
3110 * handler is registered with the OS, the watchdog timer is started,
3111 * and the stack is notified that the interface is ready.
3113 static int e1000_open(struct net_device *netdev)
3115 struct e1000_adapter *adapter = netdev_priv(netdev);
3116 struct e1000_hw *hw = &adapter->hw;
3119 /* disallow open during test */
3120 if (test_bit(__E1000_TESTING, &adapter->state))
3123 netif_carrier_off(netdev);
3125 /* allocate transmit descriptors */
3126 err = e1000e_setup_tx_resources(adapter);
3130 /* allocate receive descriptors */
3131 err = e1000e_setup_rx_resources(adapter);
3135 e1000e_power_up_phy(adapter);
3137 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
3138 if ((adapter->hw.mng_cookie.status &
3139 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
3140 e1000_update_mng_vlan(adapter);
3143 * If AMT is enabled, let the firmware know that the network
3144 * interface is now open
3146 if (adapter->flags & FLAG_HAS_AMT)
3147 e1000_get_hw_control(adapter);
3150 * before we allocate an interrupt, we must be ready to handle it.
3151 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3152 * as soon as we call pci_request_irq, so we have to setup our
3153 * clean_rx handler before we do so.
3155 e1000_configure(adapter);
3157 err = e1000_request_irq(adapter);
3162 * Work around PCIe errata with MSI interrupts causing some chipsets to
3163 * ignore e1000e MSI messages, which means we need to test our MSI
3166 if (adapter->int_mode != E1000E_INT_MODE_LEGACY) {
3167 err = e1000_test_msi(adapter);
3169 e_err("Interrupt allocation failed\n");
3174 /* From here on the code is the same as e1000e_up() */
3175 clear_bit(__E1000_DOWN, &adapter->state);
3177 napi_enable(&adapter->napi);
3179 e1000_irq_enable(adapter);
3181 netif_start_queue(netdev);
3183 /* fire a link status change interrupt to start the watchdog */
3184 ew32(ICS, E1000_ICS_LSC);
3189 e1000_release_hw_control(adapter);
3190 e1000_power_down_phy(adapter);
3191 e1000e_free_rx_resources(adapter);
3193 e1000e_free_tx_resources(adapter);
3195 e1000e_reset(adapter);
3201 * e1000_close - Disables a network interface
3202 * @netdev: network interface device structure
3204 * Returns 0, this is not allowed to fail
3206 * The close entry point is called when an interface is de-activated
3207 * by the OS. The hardware is still under the drivers control, but
3208 * needs to be disabled. A global MAC reset is issued to stop the
3209 * hardware, and all transmit and receive resources are freed.
3211 static int e1000_close(struct net_device *netdev)
3213 struct e1000_adapter *adapter = netdev_priv(netdev);
3215 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
3216 e1000e_down(adapter);
3217 e1000_power_down_phy(adapter);
3218 e1000_free_irq(adapter);
3220 e1000e_free_tx_resources(adapter);
3221 e1000e_free_rx_resources(adapter);
3224 * kill manageability vlan ID if supported, but not if a vlan with
3225 * the same ID is registered on the host OS (let 8021q kill it)
3227 if ((adapter->hw.mng_cookie.status &
3228 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
3230 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id)))
3231 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
3234 * If AMT is enabled, let the firmware know that the network
3235 * interface is now closed
3237 if (adapter->flags & FLAG_HAS_AMT)
3238 e1000_release_hw_control(adapter);
3243 * e1000_set_mac - Change the Ethernet Address of the NIC
3244 * @netdev: network interface device structure
3245 * @p: pointer to an address structure
3247 * Returns 0 on success, negative on failure
3249 static int e1000_set_mac(struct net_device *netdev, void *p)
3251 struct e1000_adapter *adapter = netdev_priv(netdev);
3252 struct sockaddr *addr = p;
3254 if (!is_valid_ether_addr(addr->sa_data))
3255 return -EADDRNOTAVAIL;
3257 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
3258 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
3260 e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
3262 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) {
3263 /* activate the work around */
3264 e1000e_set_laa_state_82571(&adapter->hw, 1);
3267 * Hold a copy of the LAA in RAR[14] This is done so that
3268 * between the time RAR[0] gets clobbered and the time it
3269 * gets fixed (in e1000_watchdog), the actual LAA is in one
3270 * of the RARs and no incoming packets directed to this port
3271 * are dropped. Eventually the LAA will be in RAR[0] and
3274 e1000e_rar_set(&adapter->hw,
3275 adapter->hw.mac.addr,
3276 adapter->hw.mac.rar_entry_count - 1);
3283 * e1000e_update_phy_task - work thread to update phy
3284 * @work: pointer to our work struct
3286 * this worker thread exists because we must acquire a
3287 * semaphore to read the phy, which we could msleep while
3288 * waiting for it, and we can't msleep in a timer.
3290 static void e1000e_update_phy_task(struct work_struct *work)
3292 struct e1000_adapter *adapter = container_of(work,
3293 struct e1000_adapter, update_phy_task);
3294 e1000_get_phy_info(&adapter->hw);
3298 * Need to wait a few seconds after link up to get diagnostic information from
3301 static void e1000_update_phy_info(unsigned long data)
3303 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
3304 schedule_work(&adapter->update_phy_task);
3308 * e1000e_update_stats - Update the board statistics counters
3309 * @adapter: board private structure
3311 void e1000e_update_stats(struct e1000_adapter *adapter)
3313 struct net_device *netdev = adapter->netdev;
3314 struct e1000_hw *hw = &adapter->hw;
3315 struct pci_dev *pdev = adapter->pdev;
3319 * Prevent stats update while adapter is being reset, or if the pci
3320 * connection is down.
3322 if (adapter->link_speed == 0)
3324 if (pci_channel_offline(pdev))
3327 adapter->stats.crcerrs += er32(CRCERRS);
3328 adapter->stats.gprc += er32(GPRC);
3329 adapter->stats.gorc += er32(GORCL);
3330 er32(GORCH); /* Clear gorc */
3331 adapter->stats.bprc += er32(BPRC);
3332 adapter->stats.mprc += er32(MPRC);
3333 adapter->stats.roc += er32(ROC);
3335 adapter->stats.mpc += er32(MPC);
3336 if ((hw->phy.type == e1000_phy_82578) ||
3337 (hw->phy.type == e1000_phy_82577)) {
3338 e1e_rphy(hw, HV_SCC_UPPER, &phy_data);
3339 e1e_rphy(hw, HV_SCC_LOWER, &phy_data);
3340 adapter->stats.scc += phy_data;
3342 e1e_rphy(hw, HV_ECOL_UPPER, &phy_data);
3343 e1e_rphy(hw, HV_ECOL_LOWER, &phy_data);
3344 adapter->stats.ecol += phy_data;
3346 e1e_rphy(hw, HV_MCC_UPPER, &phy_data);
3347 e1e_rphy(hw, HV_MCC_LOWER, &phy_data);
3348 adapter->stats.mcc += phy_data;
3350 e1e_rphy(hw, HV_LATECOL_UPPER, &phy_data);
3351 e1e_rphy(hw, HV_LATECOL_LOWER, &phy_data);
3352 adapter->stats.latecol += phy_data;
3354 e1e_rphy(hw, HV_DC_UPPER, &phy_data);
3355 e1e_rphy(hw, HV_DC_LOWER, &phy_data);
3356 adapter->stats.dc += phy_data;
3358 adapter->stats.scc += er32(SCC);
3359 adapter->stats.ecol += er32(ECOL);
3360 adapter->stats.mcc += er32(MCC);
3361 adapter->stats.latecol += er32(LATECOL);
3362 adapter->stats.dc += er32(DC);
3364 adapter->stats.xonrxc += er32(XONRXC);
3365 adapter->stats.xontxc += er32(XONTXC);
3366 adapter->stats.xoffrxc += er32(XOFFRXC);
3367 adapter->stats.xofftxc += er32(XOFFTXC);
3368 adapter->stats.gptc += er32(GPTC);
3369 adapter->stats.gotc += er32(GOTCL);
3370 er32(GOTCH); /* Clear gotc */
3371 adapter->stats.rnbc += er32(RNBC);
3372 adapter->stats.ruc += er32(RUC);
3374 adapter->stats.mptc += er32(MPTC);
3375 adapter->stats.bptc += er32(BPTC);
3377 /* used for adaptive IFS */
3379 hw->mac.tx_packet_delta = er32(TPT);
3380 adapter->stats.tpt += hw->mac.tx_packet_delta;
3381 if ((hw->phy.type == e1000_phy_82578) ||
3382 (hw->phy.type == e1000_phy_82577)) {
3383 e1e_rphy(hw, HV_COLC_UPPER, &phy_data);
3384 e1e_rphy(hw, HV_COLC_LOWER, &phy_data);
3385 hw->mac.collision_delta = phy_data;
3387 hw->mac.collision_delta = er32(COLC);
3389 adapter->stats.colc += hw->mac.collision_delta;
3391 adapter->stats.algnerrc += er32(ALGNERRC);
3392 adapter->stats.rxerrc += er32(RXERRC);
3393 if ((hw->phy.type == e1000_phy_82578) ||
3394 (hw->phy.type == e1000_phy_82577)) {
3395 e1e_rphy(hw, HV_TNCRS_UPPER, &phy_data);
3396 e1e_rphy(hw, HV_TNCRS_LOWER, &phy_data);
3397 adapter->stats.tncrs += phy_data;
3399 if ((hw->mac.type != e1000_82574) &&
3400 (hw->mac.type != e1000_82583))
3401 adapter->stats.tncrs += er32(TNCRS);
3403 adapter->stats.cexterr += er32(CEXTERR);
3404 adapter->stats.tsctc += er32(TSCTC);
3405 adapter->stats.tsctfc += er32(TSCTFC);
3407 /* Fill out the OS statistics structure */
3408 netdev->stats.multicast = adapter->stats.mprc;
3409 netdev->stats.collisions = adapter->stats.colc;
3414 * RLEC on some newer hardware can be incorrect so build
3415 * our own version based on RUC and ROC
3417 netdev->stats.rx_errors = adapter->stats.rxerrc +
3418 adapter->stats.crcerrs + adapter->stats.algnerrc +
3419 adapter->stats.ruc + adapter->stats.roc +
3420 adapter->stats.cexterr;
3421 netdev->stats.rx_length_errors = adapter->stats.ruc +
3423 netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
3424 netdev->stats.rx_frame_errors = adapter->stats.algnerrc;
3425 netdev->stats.rx_missed_errors = adapter->stats.mpc;
3428 netdev->stats.tx_errors = adapter->stats.ecol +
3429 adapter->stats.latecol;
3430 netdev->stats.tx_aborted_errors = adapter->stats.ecol;
3431 netdev->stats.tx_window_errors = adapter->stats.latecol;
3432 netdev->stats.tx_carrier_errors = adapter->stats.tncrs;
3434 /* Tx Dropped needs to be maintained elsewhere */
3436 /* Management Stats */
3437 adapter->stats.mgptc += er32(MGTPTC);
3438 adapter->stats.mgprc += er32(MGTPRC);
3439 adapter->stats.mgpdc += er32(MGTPDC);
3443 * e1000_phy_read_status - Update the PHY register status snapshot
3444 * @adapter: board private structure
3446 static void e1000_phy_read_status(struct e1000_adapter *adapter)
3448 struct e1000_hw *hw = &adapter->hw;
3449 struct e1000_phy_regs *phy = &adapter->phy_regs;
3452 if ((er32(STATUS) & E1000_STATUS_LU) &&
3453 (adapter->hw.phy.media_type == e1000_media_type_copper)) {
3454 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr);
3455 ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr);
3456 ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise);
3457 ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa);
3458 ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion);
3459 ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000);
3460 ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000);
3461 ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus);
3463 e_warn("Error reading PHY register\n");
3466 * Do not read PHY registers if link is not up
3467 * Set values to typical power-on defaults
3469 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX);
3470 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL |
3471 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE |
3473 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP |
3474 ADVERTISE_ALL | ADVERTISE_CSMA);
3476 phy->expansion = EXPANSION_ENABLENPAGE;
3477 phy->ctrl1000 = ADVERTISE_1000FULL;
3479 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF);
3483 static void e1000_print_link_info(struct e1000_adapter *adapter)
3485 struct e1000_hw *hw = &adapter->hw;
3486 u32 ctrl = er32(CTRL);
3488 /* Link status message must follow this format for user tools */
3489 printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s, "
3490 "Flow Control: %s\n",
3491 adapter->netdev->name,
3492 adapter->link_speed,
3493 (adapter->link_duplex == FULL_DUPLEX) ?
3494 "Full Duplex" : "Half Duplex",
3495 ((ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE)) ?
3497 ((ctrl & E1000_CTRL_RFCE) ? "RX" :
3498 ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None" )));
3501 bool e1000_has_link(struct e1000_adapter *adapter)
3503 struct e1000_hw *hw = &adapter->hw;
3504 bool link_active = 0;
3508 * get_link_status is set on LSC (link status) interrupt or
3509 * Rx sequence error interrupt. get_link_status will stay
3510 * false until the check_for_link establishes link
3511 * for copper adapters ONLY
3513 switch (hw->phy.media_type) {
3514 case e1000_media_type_copper:
3515 if (hw->mac.get_link_status) {
3516 ret_val = hw->mac.ops.check_for_link(hw);
3517 link_active = !hw->mac.get_link_status;
3522 case e1000_media_type_fiber:
3523 ret_val = hw->mac.ops.check_for_link(hw);
3524 link_active = !!(er32(STATUS) & E1000_STATUS_LU);
3526 case e1000_media_type_internal_serdes:
3527 ret_val = hw->mac.ops.check_for_link(hw);
3528 link_active = adapter->hw.mac.serdes_has_link;
3531 case e1000_media_type_unknown:
3535 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) &&
3536 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
3537 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
3538 e_info("Gigabit has been disabled, downgrading speed\n");
3544 static void e1000e_enable_receives(struct e1000_adapter *adapter)
3546 /* make sure the receive unit is started */
3547 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
3548 (adapter->flags & FLAG_RX_RESTART_NOW)) {
3549 struct e1000_hw *hw = &adapter->hw;
3550 u32 rctl = er32(RCTL);
3551 ew32(RCTL, rctl | E1000_RCTL_EN);
3552 adapter->flags &= ~FLAG_RX_RESTART_NOW;
3557 * e1000_watchdog - Timer Call-back
3558 * @data: pointer to adapter cast into an unsigned long
3560 static void e1000_watchdog(unsigned long data)
3562 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
3564 /* Do the rest outside of interrupt context */
3565 schedule_work(&adapter->watchdog_task);
3567 /* TODO: make this use queue_delayed_work() */
3570 static void e1000_watchdog_task(struct work_struct *work)
3572 struct e1000_adapter *adapter = container_of(work,
3573 struct e1000_adapter, watchdog_task);
3574 struct net_device *netdev = adapter->netdev;
3575 struct e1000_mac_info *mac = &adapter->hw.mac;
3576 struct e1000_phy_info *phy = &adapter->hw.phy;
3577 struct e1000_ring *tx_ring = adapter->tx_ring;
3578 struct e1000_hw *hw = &adapter->hw;
3582 link = e1000_has_link(adapter);
3583 if ((netif_carrier_ok(netdev)) && link) {
3584 e1000e_enable_receives(adapter);
3588 if ((e1000e_enable_tx_pkt_filtering(hw)) &&
3589 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id))
3590 e1000_update_mng_vlan(adapter);
3593 if (!netif_carrier_ok(netdev)) {
3595 /* update snapshot of PHY registers on LSC */
3596 e1000_phy_read_status(adapter);
3597 mac->ops.get_link_up_info(&adapter->hw,
3598 &adapter->link_speed,
3599 &adapter->link_duplex);
3600 e1000_print_link_info(adapter);
3602 * On supported PHYs, check for duplex mismatch only
3603 * if link has autonegotiated at 10/100 half
3605 if ((hw->phy.type == e1000_phy_igp_3 ||
3606 hw->phy.type == e1000_phy_bm) &&
3607 (hw->mac.autoneg == true) &&
3608 (adapter->link_speed == SPEED_10 ||
3609 adapter->link_speed == SPEED_100) &&
3610 (adapter->link_duplex == HALF_DUPLEX)) {
3613 e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp);
3615 if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS))
3616 e_info("Autonegotiated half duplex but"
3617 " link partner cannot autoneg. "
3618 " Try forcing full duplex if "
3619 "link gets many collisions.\n");
3623 * tweak tx_queue_len according to speed/duplex
3624 * and adjust the timeout factor
3626 netdev->tx_queue_len = adapter->tx_queue_len;
3627 adapter->tx_timeout_factor = 1;
3628 switch (adapter->link_speed) {
3631 netdev->tx_queue_len = 10;
3632 adapter->tx_timeout_factor = 16;
3636 netdev->tx_queue_len = 100;
3637 adapter->tx_timeout_factor = 10;
3642 * workaround: re-program speed mode bit after
3645 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) &&
3648 tarc0 = er32(TARC(0));
3649 tarc0 &= ~SPEED_MODE_BIT;
3650 ew32(TARC(0), tarc0);
3654 * disable TSO for pcie and 10/100 speeds, to avoid
3655 * some hardware issues
3657 if (!(adapter->flags & FLAG_TSO_FORCE)) {
3658 switch (adapter->link_speed) {
3661 e_info("10/100 speed: disabling TSO\n");
3662 netdev->features &= ~NETIF_F_TSO;
3663 netdev->features &= ~NETIF_F_TSO6;
3666 netdev->features |= NETIF_F_TSO;
3667 netdev->features |= NETIF_F_TSO6;
3676 * enable transmits in the hardware, need to do this
3677 * after setting TARC(0)
3680 tctl |= E1000_TCTL_EN;
3684 * Perform any post-link-up configuration before
3685 * reporting link up.
3687 if (phy->ops.cfg_on_link_up)
3688 phy->ops.cfg_on_link_up(hw);
3690 netif_carrier_on(netdev);
3692 if (!test_bit(__E1000_DOWN, &adapter->state))
3693 mod_timer(&adapter->phy_info_timer,
3694 round_jiffies(jiffies + 2 * HZ));
3697 if (netif_carrier_ok(netdev)) {
3698 adapter->link_speed = 0;
3699 adapter->link_duplex = 0;
3700 /* Link status message must follow this format */
3701 printk(KERN_INFO "e1000e: %s NIC Link is Down\n",
3702 adapter->netdev->name);
3703 netif_carrier_off(netdev);
3704 if (!test_bit(__E1000_DOWN, &adapter->state))
3705 mod_timer(&adapter->phy_info_timer,
3706 round_jiffies(jiffies + 2 * HZ));
3708 if (adapter->flags & FLAG_RX_NEEDS_RESTART)
3709 schedule_work(&adapter->reset_task);
3714 e1000e_update_stats(adapter);
3716 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
3717 adapter->tpt_old = adapter->stats.tpt;
3718 mac->collision_delta = adapter->stats.colc - adapter->colc_old;
3719 adapter->colc_old = adapter->stats.colc;
3721 adapter->gorc = adapter->stats.gorc - adapter->gorc_old;
3722 adapter->gorc_old = adapter->stats.gorc;
3723 adapter->gotc = adapter->stats.gotc - adapter->gotc_old;
3724 adapter->gotc_old = adapter->stats.gotc;
3726 e1000e_update_adaptive(&adapter->hw);
3728 if (!netif_carrier_ok(netdev)) {
3729 tx_pending = (e1000_desc_unused(tx_ring) + 1 <
3733 * We've lost link, so the controller stops DMA,
3734 * but we've got queued Tx work that's never going
3735 * to get done, so reset controller to flush Tx.
3736 * (Do the reset outside of interrupt context).
3738 adapter->tx_timeout_count++;
3739 schedule_work(&adapter->reset_task);
3740 /* return immediately since reset is imminent */
3745 /* Cause software interrupt to ensure Rx ring is cleaned */
3746 if (adapter->msix_entries)
3747 ew32(ICS, adapter->rx_ring->ims_val);
3749 ew32(ICS, E1000_ICS_RXDMT0);
3751 /* Force detection of hung controller every watchdog period */
3752 adapter->detect_tx_hung = 1;
3755 * With 82571 controllers, LAA may be overwritten due to controller
3756 * reset from the other port. Set the appropriate LAA in RAR[0]
3758 if (e1000e_get_laa_state_82571(hw))
3759 e1000e_rar_set(hw, adapter->hw.mac.addr, 0);
3761 /* Reset the timer */
3762 if (!test_bit(__E1000_DOWN, &adapter->state))
3763 mod_timer(&adapter->watchdog_timer,
3764 round_jiffies(jiffies + 2 * HZ));
3767 #define E1000_TX_FLAGS_CSUM 0x00000001
3768 #define E1000_TX_FLAGS_VLAN 0x00000002
3769 #define E1000_TX_FLAGS_TSO 0x00000004
3770 #define E1000_TX_FLAGS_IPV4 0x00000008
3771 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
3772 #define E1000_TX_FLAGS_VLAN_SHIFT 16
3774 static int e1000_tso(struct e1000_adapter *adapter,
3775 struct sk_buff *skb)
3777 struct e1000_ring *tx_ring = adapter->tx_ring;
3778 struct e1000_context_desc *context_desc;
3779 struct e1000_buffer *buffer_info;
3782 u16 ipcse = 0, tucse, mss;
3783 u8 ipcss, ipcso, tucss, tucso, hdr_len;
3786 if (!skb_is_gso(skb))
3789 if (skb_header_cloned(skb)) {
3790 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
3795 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
3796 mss = skb_shinfo(skb)->gso_size;
3797 if (skb->protocol == htons(ETH_P_IP)) {
3798 struct iphdr *iph = ip_hdr(skb);
3801 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
3803 cmd_length = E1000_TXD_CMD_IP;
3804 ipcse = skb_transport_offset(skb) - 1;
3805 } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) {
3806 ipv6_hdr(skb)->payload_len = 0;
3807 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
3808 &ipv6_hdr(skb)->daddr,
3812 ipcss = skb_network_offset(skb);
3813 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
3814 tucss = skb_transport_offset(skb);
3815 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
3818 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
3819 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
3821 i = tx_ring->next_to_use;
3822 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
3823 buffer_info = &tx_ring->buffer_info[i];
3825 context_desc->lower_setup.ip_fields.ipcss = ipcss;
3826 context_desc->lower_setup.ip_fields.ipcso = ipcso;
3827 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
3828 context_desc->upper_setup.tcp_fields.tucss = tucss;
3829 context_desc->upper_setup.tcp_fields.tucso = tucso;
3830 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
3831 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
3832 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
3833 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
3835 buffer_info->time_stamp = jiffies;
3836 buffer_info->next_to_watch = i;
3839 if (i == tx_ring->count)
3841 tx_ring->next_to_use = i;
3846 static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb)
3848 struct e1000_ring *tx_ring = adapter->tx_ring;
3849 struct e1000_context_desc *context_desc;
3850 struct e1000_buffer *buffer_info;
3853 u32 cmd_len = E1000_TXD_CMD_DEXT;
3856 if (skb->ip_summed != CHECKSUM_PARTIAL)
3859 if (skb->protocol == cpu_to_be16(ETH_P_8021Q))
3860 protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto;
3862 protocol = skb->protocol;
3865 case cpu_to_be16(ETH_P_IP):
3866 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
3867 cmd_len |= E1000_TXD_CMD_TCP;
3869 case cpu_to_be16(ETH_P_IPV6):
3870 /* XXX not handling all IPV6 headers */
3871 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
3872 cmd_len |= E1000_TXD_CMD_TCP;
3875 if (unlikely(net_ratelimit()))
3876 e_warn("checksum_partial proto=%x!\n",
3877 be16_to_cpu(protocol));
3881 css = skb_transport_offset(skb);
3883 i = tx_ring->next_to_use;
3884 buffer_info = &tx_ring->buffer_info[i];
3885 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
3887 context_desc->lower_setup.ip_config = 0;
3888 context_desc->upper_setup.tcp_fields.tucss = css;
3889 context_desc->upper_setup.tcp_fields.tucso =
3890 css + skb->csum_offset;
3891 context_desc->upper_setup.tcp_fields.tucse = 0;
3892 context_desc->tcp_seg_setup.data = 0;
3893 context_desc->cmd_and_length = cpu_to_le32(cmd_len);
3895 buffer_info->time_stamp = jiffies;
3896 buffer_info->next_to_watch = i;
3899 if (i == tx_ring->count)
3901 tx_ring->next_to_use = i;
3906 #define E1000_MAX_PER_TXD 8192
3907 #define E1000_MAX_TXD_PWR 12
3909 static int e1000_tx_map(struct e1000_adapter *adapter,
3910 struct sk_buff *skb, unsigned int first,
3911 unsigned int max_per_txd, unsigned int nr_frags,
3914 struct e1000_ring *tx_ring = adapter->tx_ring;
3915 struct e1000_buffer *buffer_info;
3916 unsigned int len = skb_headlen(skb);
3917 unsigned int offset, size, count = 0, i;
3921 i = tx_ring->next_to_use;
3923 if (skb_dma_map(&adapter->pdev->dev, skb, DMA_TO_DEVICE)) {
3924 dev_err(&adapter->pdev->dev, "TX DMA map failed\n");
3925 adapter->tx_dma_failed++;
3929 map = skb_shinfo(skb)->dma_maps;
3933 buffer_info = &tx_ring->buffer_info[i];
3934 size = min(len, max_per_txd);
3936 buffer_info->length = size;
3937 buffer_info->time_stamp = jiffies;
3938 buffer_info->next_to_watch = i;
3939 buffer_info->dma = skb_shinfo(skb)->dma_head + offset;
3947 if (i == tx_ring->count)
3952 for (f = 0; f < nr_frags; f++) {
3953 struct skb_frag_struct *frag;
3955 frag = &skb_shinfo(skb)->frags[f];
3961 if (i == tx_ring->count)
3964 buffer_info = &tx_ring->buffer_info[i];
3965 size = min(len, max_per_txd);
3967 buffer_info->length = size;
3968 buffer_info->time_stamp = jiffies;
3969 buffer_info->next_to_watch = i;
3970 buffer_info->dma = map[f] + offset;
3978 tx_ring->buffer_info[i].skb = skb;
3979 tx_ring->buffer_info[first].next_to_watch = i;
3984 static void e1000_tx_queue(struct e1000_adapter *adapter,
3985 int tx_flags, int count)
3987 struct e1000_ring *tx_ring = adapter->tx_ring;
3988 struct e1000_tx_desc *tx_desc = NULL;
3989 struct e1000_buffer *buffer_info;
3990 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
3993 if (tx_flags & E1000_TX_FLAGS_TSO) {
3994 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
3996 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
3998 if (tx_flags & E1000_TX_FLAGS_IPV4)
3999 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
4002 if (tx_flags & E1000_TX_FLAGS_CSUM) {
4003 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
4004 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
4007 if (tx_flags & E1000_TX_FLAGS_VLAN) {
4008 txd_lower |= E1000_TXD_CMD_VLE;
4009 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
4012 i = tx_ring->next_to_use;
4015 buffer_info = &tx_ring->buffer_info[i];
4016 tx_desc = E1000_TX_DESC(*tx_ring, i);
4017 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
4018 tx_desc->lower.data =
4019 cpu_to_le32(txd_lower | buffer_info->length);
4020 tx_desc->upper.data = cpu_to_le32(txd_upper);
4023 if (i == tx_ring->count)
4027 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
4030 * Force memory writes to complete before letting h/w
4031 * know there are new descriptors to fetch. (Only
4032 * applicable for weak-ordered memory model archs,
4037 tx_ring->next_to_use = i;
4038 writel(i, adapter->hw.hw_addr + tx_ring->tail);
4040 * we need this if more than one processor can write to our tail
4041 * at a time, it synchronizes IO on IA64/Altix systems
4046 #define MINIMUM_DHCP_PACKET_SIZE 282
4047 static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
4048 struct sk_buff *skb)
4050 struct e1000_hw *hw = &adapter->hw;
4053 if (vlan_tx_tag_present(skb)) {
4054 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id)
4055 && (adapter->hw.mng_cookie.status &
4056 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
4060 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE)
4063 if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP))
4067 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14);
4070 if (ip->protocol != IPPROTO_UDP)
4073 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
4074 if (ntohs(udp->dest) != 67)
4077 offset = (u8 *)udp + 8 - skb->data;
4078 length = skb->len - offset;
4079 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length);
4085 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
4087 struct e1000_adapter *adapter = netdev_priv(netdev);
4089 netif_stop_queue(netdev);
4091 * Herbert's original patch had:
4092 * smp_mb__after_netif_stop_queue();
4093 * but since that doesn't exist yet, just open code it.
4098 * We need to check again in a case another CPU has just
4099 * made room available.
4101 if (e1000_desc_unused(adapter->tx_ring) < size)
4105 netif_start_queue(netdev);
4106 ++adapter->restart_queue;
4110 static int e1000_maybe_stop_tx(struct net_device *netdev, int size)
4112 struct e1000_adapter *adapter = netdev_priv(netdev);
4114 if (e1000_desc_unused(adapter->tx_ring) >= size)
4116 return __e1000_maybe_stop_tx(netdev, size);
4119 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
4120 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
4121 struct net_device *netdev)
4123 struct e1000_adapter *adapter = netdev_priv(netdev);
4124 struct e1000_ring *tx_ring = adapter->tx_ring;
4126 unsigned int max_per_txd = E1000_MAX_PER_TXD;
4127 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
4128 unsigned int tx_flags = 0;
4129 unsigned int len = skb->len - skb->data_len;
4130 unsigned int nr_frags;
4136 if (test_bit(__E1000_DOWN, &adapter->state)) {
4137 dev_kfree_skb_any(skb);
4138 return NETDEV_TX_OK;
4141 if (skb->len <= 0) {
4142 dev_kfree_skb_any(skb);
4143 return NETDEV_TX_OK;
4146 mss = skb_shinfo(skb)->gso_size;
4148 * The controller does a simple calculation to
4149 * make sure there is enough room in the FIFO before
4150 * initiating the DMA for each buffer. The calc is:
4151 * 4 = ceil(buffer len/mss). To make sure we don't
4152 * overrun the FIFO, adjust the max buffer len if mss
4157 max_per_txd = min(mss << 2, max_per_txd);
4158 max_txd_pwr = fls(max_per_txd) - 1;
4161 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
4162 * points to just header, pull a few bytes of payload from
4163 * frags into skb->data
4165 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4167 * we do this workaround for ES2LAN, but it is un-necessary,
4168 * avoiding it could save a lot of cycles
4170 if (skb->data_len && (hdr_len == len)) {
4171 unsigned int pull_size;
4173 pull_size = min((unsigned int)4, skb->data_len);
4174 if (!__pskb_pull_tail(skb, pull_size)) {
4175 e_err("__pskb_pull_tail failed.\n");
4176 dev_kfree_skb_any(skb);
4177 return NETDEV_TX_OK;
4179 len = skb->len - skb->data_len;
4183 /* reserve a descriptor for the offload context */
4184 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
4188 count += TXD_USE_COUNT(len, max_txd_pwr);
4190 nr_frags = skb_shinfo(skb)->nr_frags;
4191 for (f = 0; f < nr_frags; f++)
4192 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
4195 if (adapter->hw.mac.tx_pkt_filtering)
4196 e1000_transfer_dhcp_info(adapter, skb);
4199 * need: count + 2 desc gap to keep tail from touching
4200 * head, otherwise try next time
4202 if (e1000_maybe_stop_tx(netdev, count + 2))
4203 return NETDEV_TX_BUSY;
4205 if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
4206 tx_flags |= E1000_TX_FLAGS_VLAN;
4207 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
4210 first = tx_ring->next_to_use;
4212 tso = e1000_tso(adapter, skb);
4214 dev_kfree_skb_any(skb);
4215 return NETDEV_TX_OK;
4219 tx_flags |= E1000_TX_FLAGS_TSO;
4220 else if (e1000_tx_csum(adapter, skb))
4221 tx_flags |= E1000_TX_FLAGS_CSUM;
4224 * Old method was to assume IPv4 packet by default if TSO was enabled.
4225 * 82571 hardware supports TSO capabilities for IPv6 as well...
4226 * no longer assume, we must.
4228 if (skb->protocol == htons(ETH_P_IP))
4229 tx_flags |= E1000_TX_FLAGS_IPV4;
4231 /* if count is 0 then mapping error has occured */
4232 count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss);
4234 e1000_tx_queue(adapter, tx_flags, count);
4235 /* Make sure there is space in the ring for the next send. */
4236 e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2);
4239 dev_kfree_skb_any(skb);
4240 tx_ring->buffer_info[first].time_stamp = 0;
4241 tx_ring->next_to_use = first;
4244 return NETDEV_TX_OK;
4248 * e1000_tx_timeout - Respond to a Tx Hang
4249 * @netdev: network interface device structure
4251 static void e1000_tx_timeout(struct net_device *netdev)
4253 struct e1000_adapter *adapter = netdev_priv(netdev);
4255 /* Do the reset outside of interrupt context */
4256 adapter->tx_timeout_count++;
4257 schedule_work(&adapter->reset_task);
4260 static void e1000_reset_task(struct work_struct *work)
4262 struct e1000_adapter *adapter;
4263 adapter = container_of(work, struct e1000_adapter, reset_task);
4265 e1000e_reinit_locked(adapter);
4269 * e1000_get_stats - Get System Network Statistics
4270 * @netdev: network interface device structure
4272 * Returns the address of the device statistics structure.
4273 * The statistics are actually updated from the timer callback.
4275 static struct net_device_stats *e1000_get_stats(struct net_device *netdev)
4277 /* only return the current stats */
4278 return &netdev->stats;
4282 * e1000_change_mtu - Change the Maximum Transfer Unit
4283 * @netdev: network interface device structure
4284 * @new_mtu: new value for maximum frame size
4286 * Returns 0 on success, negative on failure
4288 static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
4290 struct e1000_adapter *adapter = netdev_priv(netdev);
4291 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
4293 /* Jumbo frame support */
4294 if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) &&
4295 !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
4296 e_err("Jumbo Frames not supported.\n");
4300 /* Supported frame sizes */
4301 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) ||
4302 (max_frame > adapter->max_hw_frame_size)) {
4303 e_err("Unsupported MTU setting\n");
4307 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
4309 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
4310 adapter->max_frame_size = max_frame;
4311 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu);
4312 netdev->mtu = new_mtu;
4313 if (netif_running(netdev))
4314 e1000e_down(adapter);
4317 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
4318 * means we reserve 2 more, this pushes us to allocate from the next
4320 * i.e. RXBUFFER_2048 --> size-4096 slab
4321 * However with the new *_jumbo_rx* routines, jumbo receives will use
4325 if (max_frame <= 256)
4326 adapter->rx_buffer_len = 256;
4327 else if (max_frame <= 512)
4328 adapter->rx_buffer_len = 512;
4329 else if (max_frame <= 1024)
4330 adapter->rx_buffer_len = 1024;
4331 else if (max_frame <= 2048)
4332 adapter->rx_buffer_len = 2048;
4334 adapter->rx_buffer_len = 4096;
4336 /* adjust allocation if LPE protects us, and we aren't using SBP */
4337 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
4338 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
4339 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN
4342 if (netif_running(netdev))
4345 e1000e_reset(adapter);
4347 clear_bit(__E1000_RESETTING, &adapter->state);
4352 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
4355 struct e1000_adapter *adapter = netdev_priv(netdev);
4356 struct mii_ioctl_data *data = if_mii(ifr);
4358 if (adapter->hw.phy.media_type != e1000_media_type_copper)
4363 data->phy_id = adapter->hw.phy.addr;
4366 e1000_phy_read_status(adapter);
4368 switch (data->reg_num & 0x1F) {
4370 data->val_out = adapter->phy_regs.bmcr;
4373 data->val_out = adapter->phy_regs.bmsr;
4376 data->val_out = (adapter->hw.phy.id >> 16);
4379 data->val_out = (adapter->hw.phy.id & 0xFFFF);
4382 data->val_out = adapter->phy_regs.advertise;
4385 data->val_out = adapter->phy_regs.lpa;
4388 data->val_out = adapter->phy_regs.expansion;
4391 data->val_out = adapter->phy_regs.ctrl1000;
4394 data->val_out = adapter->phy_regs.stat1000;
4397 data->val_out = adapter->phy_regs.estatus;
4410 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
4416 return e1000_mii_ioctl(netdev, ifr, cmd);
4422 static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc)
4424 struct e1000_hw *hw = &adapter->hw;
4429 /* copy MAC RARs to PHY RARs */
4430 for (i = 0; i < adapter->hw.mac.rar_entry_count; i++) {
4431 mac_reg = er32(RAL(i));
4432 e1e_wphy(hw, BM_RAR_L(i), (u16)(mac_reg & 0xFFFF));
4433 e1e_wphy(hw, BM_RAR_M(i), (u16)((mac_reg >> 16) & 0xFFFF));
4434 mac_reg = er32(RAH(i));
4435 e1e_wphy(hw, BM_RAR_H(i), (u16)(mac_reg & 0xFFFF));
4436 e1e_wphy(hw, BM_RAR_CTRL(i), (u16)((mac_reg >> 16) & 0xFFFF));
4439 /* copy MAC MTA to PHY MTA */
4440 for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) {
4441 mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i);
4442 e1e_wphy(hw, BM_MTA(i), (u16)(mac_reg & 0xFFFF));
4443 e1e_wphy(hw, BM_MTA(i) + 1, (u16)((mac_reg >> 16) & 0xFFFF));
4446 /* configure PHY Rx Control register */
4447 e1e_rphy(&adapter->hw, BM_RCTL, &phy_reg);
4448 mac_reg = er32(RCTL);
4449 if (mac_reg & E1000_RCTL_UPE)
4450 phy_reg |= BM_RCTL_UPE;
4451 if (mac_reg & E1000_RCTL_MPE)
4452 phy_reg |= BM_RCTL_MPE;
4453 phy_reg &= ~(BM_RCTL_MO_MASK);
4454 if (mac_reg & E1000_RCTL_MO_3)
4455 phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT)
4456 << BM_RCTL_MO_SHIFT);
4457 if (mac_reg & E1000_RCTL_BAM)
4458 phy_reg |= BM_RCTL_BAM;
4459 if (mac_reg & E1000_RCTL_PMCF)
4460 phy_reg |= BM_RCTL_PMCF;
4461 mac_reg = er32(CTRL);
4462 if (mac_reg & E1000_CTRL_RFCE)
4463 phy_reg |= BM_RCTL_RFCE;
4464 e1e_wphy(&adapter->hw, BM_RCTL, phy_reg);
4466 /* enable PHY wakeup in MAC register */
4468 ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN);
4470 /* configure and enable PHY wakeup in PHY registers */
4471 e1e_wphy(&adapter->hw, BM_WUFC, wufc);
4472 e1e_wphy(&adapter->hw, BM_WUC, E1000_WUC_PME_EN);
4474 /* activate PHY wakeup */
4475 retval = hw->phy.ops.acquire(hw);
4477 e_err("Could not acquire PHY\n");
4480 e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
4481 (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT));
4482 retval = e1000e_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, &phy_reg);
4484 e_err("Could not read PHY page 769\n");
4487 phy_reg |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT;
4488 retval = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, phy_reg);
4490 e_err("Could not set PHY Host Wakeup bit\n");
4492 hw->phy.ops.release(hw);
4497 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake)
4499 struct net_device *netdev = pci_get_drvdata(pdev);
4500 struct e1000_adapter *adapter = netdev_priv(netdev);
4501 struct e1000_hw *hw = &adapter->hw;
4502 u32 ctrl, ctrl_ext, rctl, status;
4503 u32 wufc = adapter->wol;
4506 netif_device_detach(netdev);
4508 if (netif_running(netdev)) {
4509 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
4510 e1000e_down(adapter);
4511 e1000_free_irq(adapter);
4513 e1000e_reset_interrupt_capability(adapter);
4515 retval = pci_save_state(pdev);
4519 status = er32(STATUS);
4520 if (status & E1000_STATUS_LU)
4521 wufc &= ~E1000_WUFC_LNKC;
4524 e1000_setup_rctl(adapter);
4525 e1000_set_multi(netdev);
4527 /* turn on all-multi mode if wake on multicast is enabled */
4528 if (wufc & E1000_WUFC_MC) {
4530 rctl |= E1000_RCTL_MPE;
4535 /* advertise wake from D3Cold */
4536 #define E1000_CTRL_ADVD3WUC 0x00100000
4537 /* phy power management enable */
4538 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4539 ctrl |= E1000_CTRL_ADVD3WUC;
4540 if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP))
4541 ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT;
4544 if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
4545 adapter->hw.phy.media_type ==
4546 e1000_media_type_internal_serdes) {
4547 /* keep the laser running in D3 */
4548 ctrl_ext = er32(CTRL_EXT);
4549 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
4550 ew32(CTRL_EXT, ctrl_ext);
4553 if (adapter->flags & FLAG_IS_ICH)
4554 e1000e_disable_gig_wol_ich8lan(&adapter->hw);
4556 /* Allow time for pending master requests to run */
4557 e1000e_disable_pcie_master(&adapter->hw);
4559 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
4560 /* enable wakeup by the PHY */
4561 retval = e1000_init_phy_wakeup(adapter, wufc);
4565 /* enable wakeup by the MAC */
4567 ew32(WUC, E1000_WUC_PME_EN);
4574 *enable_wake = !!wufc;
4576 /* make sure adapter isn't asleep if manageability is enabled */
4577 if ((adapter->flags & FLAG_MNG_PT_ENABLED) ||
4578 (hw->mac.ops.check_mng_mode(hw)))
4579 *enable_wake = true;
4581 if (adapter->hw.phy.type == e1000_phy_igp_3)
4582 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw);
4585 * Release control of h/w to f/w. If f/w is AMT enabled, this
4586 * would have already happened in close and is redundant.
4588 e1000_release_hw_control(adapter);
4590 pci_disable_device(pdev);
4595 static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake)
4597 if (sleep && wake) {
4598 pci_prepare_to_sleep(pdev);
4602 pci_wake_from_d3(pdev, wake);
4603 pci_set_power_state(pdev, PCI_D3hot);
4606 static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep,
4609 struct net_device *netdev = pci_get_drvdata(pdev);
4610 struct e1000_adapter *adapter = netdev_priv(netdev);
4613 * The pci-e switch on some quad port adapters will report a
4614 * correctable error when the MAC transitions from D0 to D3. To
4615 * prevent this we need to mask off the correctable errors on the
4616 * downstream port of the pci-e switch.
4618 if (adapter->flags & FLAG_IS_QUAD_PORT) {
4619 struct pci_dev *us_dev = pdev->bus->self;
4620 int pos = pci_find_capability(us_dev, PCI_CAP_ID_EXP);
4623 pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl);
4624 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL,
4625 (devctl & ~PCI_EXP_DEVCTL_CERE));
4627 e1000_power_off(pdev, sleep, wake);
4629 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl);
4631 e1000_power_off(pdev, sleep, wake);
4635 static void e1000e_disable_l1aspm(struct pci_dev *pdev)
4641 * 82573 workaround - disable L1 ASPM on mobile chipsets
4643 * L1 ASPM on various mobile (ich7) chipsets do not behave properly
4644 * resulting in lost data or garbage information on the pci-e link
4645 * level. This could result in (false) bad EEPROM checksum errors,
4646 * long ping times (up to 2s) or even a system freeze/hang.
4648 * Unfortunately this feature saves about 1W power consumption when
4651 pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
4652 pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, &val);
4654 dev_warn(&pdev->dev, "Disabling L1 ASPM\n");
4656 pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, val);
4661 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
4666 retval = __e1000_shutdown(pdev, &wake);
4668 e1000_complete_shutdown(pdev, true, wake);
4673 static int e1000_resume(struct pci_dev *pdev)
4675 struct net_device *netdev = pci_get_drvdata(pdev);
4676 struct e1000_adapter *adapter = netdev_priv(netdev);
4677 struct e1000_hw *hw = &adapter->hw;
4680 pci_set_power_state(pdev, PCI_D0);
4681 pci_restore_state(pdev);
4682 e1000e_disable_l1aspm(pdev);
4684 err = pci_enable_device_mem(pdev);
4687 "Cannot enable PCI device from suspend\n");
4691 pci_set_master(pdev);
4693 pci_enable_wake(pdev, PCI_D3hot, 0);
4694 pci_enable_wake(pdev, PCI_D3cold, 0);
4696 e1000e_set_interrupt_capability(adapter);
4697 if (netif_running(netdev)) {
4698 err = e1000_request_irq(adapter);
4703 e1000e_power_up_phy(adapter);
4705 /* report the system wakeup cause from S3/S4 */
4706 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
4709 e1e_rphy(&adapter->hw, BM_WUS, &phy_data);
4711 e_info("PHY Wakeup cause - %s\n",
4712 phy_data & E1000_WUS_EX ? "Unicast Packet" :
4713 phy_data & E1000_WUS_MC ? "Multicast Packet" :
4714 phy_data & E1000_WUS_BC ? "Broadcast Packet" :
4715 phy_data & E1000_WUS_MAG ? "Magic Packet" :
4716 phy_data & E1000_WUS_LNKC ? "Link Status "
4717 " Change" : "other");
4719 e1e_wphy(&adapter->hw, BM_WUS, ~0);
4721 u32 wus = er32(WUS);
4723 e_info("MAC Wakeup cause - %s\n",
4724 wus & E1000_WUS_EX ? "Unicast Packet" :
4725 wus & E1000_WUS_MC ? "Multicast Packet" :
4726 wus & E1000_WUS_BC ? "Broadcast Packet" :
4727 wus & E1000_WUS_MAG ? "Magic Packet" :
4728 wus & E1000_WUS_LNKC ? "Link Status Change" :
4734 e1000e_reset(adapter);
4736 e1000_init_manageability(adapter);
4738 if (netif_running(netdev))
4741 netif_device_attach(netdev);
4744 * If the controller has AMT, do not set DRV_LOAD until the interface
4745 * is up. For all other cases, let the f/w know that the h/w is now
4746 * under the control of the driver.
4748 if (!(adapter->flags & FLAG_HAS_AMT))
4749 e1000_get_hw_control(adapter);
4755 static void e1000_shutdown(struct pci_dev *pdev)
4759 __e1000_shutdown(pdev, &wake);
4761 if (system_state == SYSTEM_POWER_OFF)
4762 e1000_complete_shutdown(pdev, false, wake);
4765 #ifdef CONFIG_NET_POLL_CONTROLLER
4767 * Polling 'interrupt' - used by things like netconsole to send skbs
4768 * without having to re-enable interrupts. It's not called while
4769 * the interrupt routine is executing.
4771 static void e1000_netpoll(struct net_device *netdev)
4773 struct e1000_adapter *adapter = netdev_priv(netdev);
4775 disable_irq(adapter->pdev->irq);
4776 e1000_intr(adapter->pdev->irq, netdev);
4778 enable_irq(adapter->pdev->irq);
4783 * e1000_io_error_detected - called when PCI error is detected
4784 * @pdev: Pointer to PCI device
4785 * @state: The current pci connection state
4787 * This function is called after a PCI bus error affecting
4788 * this device has been detected.
4790 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
4791 pci_channel_state_t state)
4793 struct net_device *netdev = pci_get_drvdata(pdev);
4794 struct e1000_adapter *adapter = netdev_priv(netdev);
4796 netif_device_detach(netdev);
4798 if (state == pci_channel_io_perm_failure)
4799 return PCI_ERS_RESULT_DISCONNECT;
4801 if (netif_running(netdev))
4802 e1000e_down(adapter);
4803 pci_disable_device(pdev);
4805 /* Request a slot slot reset. */
4806 return PCI_ERS_RESULT_NEED_RESET;
4810 * e1000_io_slot_reset - called after the pci bus has been reset.
4811 * @pdev: Pointer to PCI device
4813 * Restart the card from scratch, as if from a cold-boot. Implementation
4814 * resembles the first-half of the e1000_resume routine.
4816 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
4818 struct net_device *netdev = pci_get_drvdata(pdev);
4819 struct e1000_adapter *adapter = netdev_priv(netdev);
4820 struct e1000_hw *hw = &adapter->hw;
4822 pci_ers_result_t result;
4824 e1000e_disable_l1aspm(pdev);
4825 err = pci_enable_device_mem(pdev);
4828 "Cannot re-enable PCI device after reset.\n");
4829 result = PCI_ERS_RESULT_DISCONNECT;
4831 pci_set_master(pdev);
4832 pci_restore_state(pdev);
4834 pci_enable_wake(pdev, PCI_D3hot, 0);
4835 pci_enable_wake(pdev, PCI_D3cold, 0);
4837 e1000e_reset(adapter);
4839 result = PCI_ERS_RESULT_RECOVERED;
4842 pci_cleanup_aer_uncorrect_error_status(pdev);
4848 * e1000_io_resume - called when traffic can start flowing again.
4849 * @pdev: Pointer to PCI device
4851 * This callback is called when the error recovery driver tells us that
4852 * its OK to resume normal operation. Implementation resembles the
4853 * second-half of the e1000_resume routine.
4855 static void e1000_io_resume(struct pci_dev *pdev)
4857 struct net_device *netdev = pci_get_drvdata(pdev);
4858 struct e1000_adapter *adapter = netdev_priv(netdev);
4860 e1000_init_manageability(adapter);
4862 if (netif_running(netdev)) {
4863 if (e1000e_up(adapter)) {
4865 "can't bring device back up after reset\n");
4870 netif_device_attach(netdev);
4873 * If the controller has AMT, do not set DRV_LOAD until the interface
4874 * is up. For all other cases, let the f/w know that the h/w is now
4875 * under the control of the driver.
4877 if (!(adapter->flags & FLAG_HAS_AMT))
4878 e1000_get_hw_control(adapter);
4882 static void e1000_print_device_info(struct e1000_adapter *adapter)
4884 struct e1000_hw *hw = &adapter->hw;
4885 struct net_device *netdev = adapter->netdev;
4888 /* print bus type/speed/width info */
4889 e_info("(PCI Express:2.5GB/s:%s) %pM\n",
4891 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
4895 e_info("Intel(R) PRO/%s Network Connection\n",
4896 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000");
4897 e1000e_read_pba_num(hw, &pba_num);
4898 e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
4899 hw->mac.type, hw->phy.type, (pba_num >> 8), (pba_num & 0xff));
4902 static void e1000_eeprom_checks(struct e1000_adapter *adapter)
4904 struct e1000_hw *hw = &adapter->hw;
4908 if (hw->mac.type != e1000_82573)
4911 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf);
4912 if (!ret_val && (!(le16_to_cpu(buf) & (1 << 0)))) {
4913 /* Deep Smart Power Down (DSPD) */
4914 dev_warn(&adapter->pdev->dev,
4915 "Warning: detected DSPD enabled in EEPROM\n");
4918 ret_val = e1000_read_nvm(hw, NVM_INIT_3GIO_3, 1, &buf);
4919 if (!ret_val && (le16_to_cpu(buf) & (3 << 2))) {
4921 dev_warn(&adapter->pdev->dev,
4922 "Warning: detected ASPM enabled in EEPROM\n");
4926 static const struct net_device_ops e1000e_netdev_ops = {
4927 .ndo_open = e1000_open,
4928 .ndo_stop = e1000_close,
4929 .ndo_start_xmit = e1000_xmit_frame,
4930 .ndo_get_stats = e1000_get_stats,
4931 .ndo_set_multicast_list = e1000_set_multi,
4932 .ndo_set_mac_address = e1000_set_mac,
4933 .ndo_change_mtu = e1000_change_mtu,
4934 .ndo_do_ioctl = e1000_ioctl,
4935 .ndo_tx_timeout = e1000_tx_timeout,
4936 .ndo_validate_addr = eth_validate_addr,
4938 .ndo_vlan_rx_register = e1000_vlan_rx_register,
4939 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid,
4940 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid,
4941 #ifdef CONFIG_NET_POLL_CONTROLLER
4942 .ndo_poll_controller = e1000_netpoll,
4947 * e1000_probe - Device Initialization Routine
4948 * @pdev: PCI device information struct
4949 * @ent: entry in e1000_pci_tbl
4951 * Returns 0 on success, negative on failure
4953 * e1000_probe initializes an adapter identified by a pci_dev structure.
4954 * The OS initialization, configuring of the adapter private structure,
4955 * and a hardware reset occur.
4957 static int __devinit e1000_probe(struct pci_dev *pdev,
4958 const struct pci_device_id *ent)
4960 struct net_device *netdev;
4961 struct e1000_adapter *adapter;
4962 struct e1000_hw *hw;
4963 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data];
4964 resource_size_t mmio_start, mmio_len;
4965 resource_size_t flash_start, flash_len;
4967 static int cards_found;
4968 int i, err, pci_using_dac;
4969 u16 eeprom_data = 0;
4970 u16 eeprom_apme_mask = E1000_EEPROM_APME;
4972 e1000e_disable_l1aspm(pdev);
4974 err = pci_enable_device_mem(pdev);
4979 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4981 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4985 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4987 err = pci_set_consistent_dma_mask(pdev,
4990 dev_err(&pdev->dev, "No usable DMA "
4991 "configuration, aborting\n");
4997 err = pci_request_selected_regions_exclusive(pdev,
4998 pci_select_bars(pdev, IORESOURCE_MEM),
4999 e1000e_driver_name);
5003 /* AER (Advanced Error Reporting) hooks */
5004 pci_enable_pcie_error_reporting(pdev);
5006 pci_set_master(pdev);
5007 /* PCI config space info */
5008 err = pci_save_state(pdev);
5010 goto err_alloc_etherdev;
5013 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
5015 goto err_alloc_etherdev;
5017 SET_NETDEV_DEV(netdev, &pdev->dev);
5019 pci_set_drvdata(pdev, netdev);
5020 adapter = netdev_priv(netdev);
5022 adapter->netdev = netdev;
5023 adapter->pdev = pdev;
5025 adapter->pba = ei->pba;
5026 adapter->flags = ei->flags;
5027 adapter->flags2 = ei->flags2;
5028 adapter->hw.adapter = adapter;
5029 adapter->hw.mac.type = ei->mac;
5030 adapter->max_hw_frame_size = ei->max_hw_frame_size;
5031 adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1;
5033 mmio_start = pci_resource_start(pdev, 0);
5034 mmio_len = pci_resource_len(pdev, 0);
5037 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
5038 if (!adapter->hw.hw_addr)
5041 if ((adapter->flags & FLAG_HAS_FLASH) &&
5042 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
5043 flash_start = pci_resource_start(pdev, 1);
5044 flash_len = pci_resource_len(pdev, 1);
5045 adapter->hw.flash_address = ioremap(flash_start, flash_len);
5046 if (!adapter->hw.flash_address)
5050 /* construct the net_device struct */
5051 netdev->netdev_ops = &e1000e_netdev_ops;
5052 e1000e_set_ethtool_ops(netdev);
5053 netdev->watchdog_timeo = 5 * HZ;
5054 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
5055 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
5057 netdev->mem_start = mmio_start;
5058 netdev->mem_end = mmio_start + mmio_len;
5060 adapter->bd_number = cards_found++;
5062 e1000e_check_options(adapter);
5064 /* setup adapter struct */
5065 err = e1000_sw_init(adapter);
5071 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
5072 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
5073 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
5075 err = ei->get_variants(adapter);
5079 if ((adapter->flags & FLAG_IS_ICH) &&
5080 (adapter->flags & FLAG_READ_ONLY_NVM))
5081 e1000e_write_protect_nvm_ich8lan(&adapter->hw);
5083 hw->mac.ops.get_bus_info(&adapter->hw);
5085 adapter->hw.phy.autoneg_wait_to_complete = 0;
5087 /* Copper options */
5088 if (adapter->hw.phy.media_type == e1000_media_type_copper) {
5089 adapter->hw.phy.mdix = AUTO_ALL_MODES;
5090 adapter->hw.phy.disable_polarity_correction = 0;
5091 adapter->hw.phy.ms_type = e1000_ms_hw_default;
5094 if (e1000_check_reset_block(&adapter->hw))
5095 e_info("PHY reset is blocked due to SOL/IDER session.\n");
5097 netdev->features = NETIF_F_SG |
5099 NETIF_F_HW_VLAN_TX |
5102 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
5103 netdev->features |= NETIF_F_HW_VLAN_FILTER;
5105 netdev->features |= NETIF_F_TSO;
5106 netdev->features |= NETIF_F_TSO6;
5108 netdev->vlan_features |= NETIF_F_TSO;
5109 netdev->vlan_features |= NETIF_F_TSO6;
5110 netdev->vlan_features |= NETIF_F_HW_CSUM;
5111 netdev->vlan_features |= NETIF_F_SG;
5114 netdev->features |= NETIF_F_HIGHDMA;
5116 if (e1000e_enable_mng_pass_thru(&adapter->hw))
5117 adapter->flags |= FLAG_MNG_PT_ENABLED;
5120 * before reading the NVM, reset the controller to
5121 * put the device in a known good starting state
5123 adapter->hw.mac.ops.reset_hw(&adapter->hw);
5126 * systems with ASPM and others may see the checksum fail on the first
5127 * attempt. Let's give it a few tries
5130 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0)
5133 e_err("The NVM Checksum Is Not Valid\n");
5139 e1000_eeprom_checks(adapter);
5141 /* copy the MAC address out of the NVM */
5142 if (e1000e_read_mac_addr(&adapter->hw))
5143 e_err("NVM Read Error while reading MAC address\n");
5145 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
5146 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
5148 if (!is_valid_ether_addr(netdev->perm_addr)) {
5149 e_err("Invalid MAC Address: %pM\n", netdev->perm_addr);
5154 init_timer(&adapter->watchdog_timer);
5155 adapter->watchdog_timer.function = &e1000_watchdog;
5156 adapter->watchdog_timer.data = (unsigned long) adapter;
5158 init_timer(&adapter->phy_info_timer);
5159 adapter->phy_info_timer.function = &e1000_update_phy_info;
5160 adapter->phy_info_timer.data = (unsigned long) adapter;
5162 INIT_WORK(&adapter->reset_task, e1000_reset_task);
5163 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
5164 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround);
5165 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task);
5166 INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang);
5168 /* Initialize link parameters. User can change them with ethtool */
5169 adapter->hw.mac.autoneg = 1;
5170 adapter->fc_autoneg = 1;
5171 adapter->hw.fc.requested_mode = e1000_fc_default;
5172 adapter->hw.fc.current_mode = e1000_fc_default;
5173 adapter->hw.phy.autoneg_advertised = 0x2f;
5175 /* ring size defaults */
5176 adapter->rx_ring->count = 256;
5177 adapter->tx_ring->count = 256;
5180 * Initial Wake on LAN setting - If APM wake is enabled in
5181 * the EEPROM, enable the ACPI Magic Packet filter
5183 if (adapter->flags & FLAG_APME_IN_WUC) {
5184 /* APME bit in EEPROM is mapped to WUC.APME */
5185 eeprom_data = er32(WUC);
5186 eeprom_apme_mask = E1000_WUC_APME;
5187 if (eeprom_data & E1000_WUC_PHY_WAKE)
5188 adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP;
5189 } else if (adapter->flags & FLAG_APME_IN_CTRL3) {
5190 if (adapter->flags & FLAG_APME_CHECK_PORT_B &&
5191 (adapter->hw.bus.func == 1))
5192 e1000_read_nvm(&adapter->hw,
5193 NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
5195 e1000_read_nvm(&adapter->hw,
5196 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
5199 /* fetch WoL from EEPROM */
5200 if (eeprom_data & eeprom_apme_mask)
5201 adapter->eeprom_wol |= E1000_WUFC_MAG;
5204 * now that we have the eeprom settings, apply the special cases
5205 * where the eeprom may be wrong or the board simply won't support
5206 * wake on lan on a particular port
5208 if (!(adapter->flags & FLAG_HAS_WOL))
5209 adapter->eeprom_wol = 0;
5211 /* initialize the wol settings based on the eeprom settings */
5212 adapter->wol = adapter->eeprom_wol;
5213 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
5215 /* save off EEPROM version number */
5216 e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers);
5218 /* reset the hardware with the new settings */
5219 e1000e_reset(adapter);
5222 * If the controller has AMT, do not set DRV_LOAD until the interface
5223 * is up. For all other cases, let the f/w know that the h/w is now
5224 * under the control of the driver.
5226 if (!(adapter->flags & FLAG_HAS_AMT))
5227 e1000_get_hw_control(adapter);
5229 strcpy(netdev->name, "eth%d");
5230 err = register_netdev(netdev);
5234 /* carrier off reporting is important to ethtool even BEFORE open */
5235 netif_carrier_off(netdev);
5237 e1000_print_device_info(adapter);
5242 if (!(adapter->flags & FLAG_HAS_AMT))
5243 e1000_release_hw_control(adapter);
5245 if (!e1000_check_reset_block(&adapter->hw))
5246 e1000_phy_hw_reset(&adapter->hw);
5249 kfree(adapter->tx_ring);
5250 kfree(adapter->rx_ring);
5252 if (adapter->hw.flash_address)
5253 iounmap(adapter->hw.flash_address);
5254 e1000e_reset_interrupt_capability(adapter);
5256 iounmap(adapter->hw.hw_addr);
5258 free_netdev(netdev);
5260 pci_release_selected_regions(pdev,
5261 pci_select_bars(pdev, IORESOURCE_MEM));
5264 pci_disable_device(pdev);
5269 * e1000_remove - Device Removal Routine
5270 * @pdev: PCI device information struct
5272 * e1000_remove is called by the PCI subsystem to alert the driver
5273 * that it should release a PCI device. The could be caused by a
5274 * Hot-Plug event, or because the driver is going to be removed from
5277 static void __devexit e1000_remove(struct pci_dev *pdev)
5279 struct net_device *netdev = pci_get_drvdata(pdev);
5280 struct e1000_adapter *adapter = netdev_priv(netdev);
5283 * flush_scheduled work may reschedule our watchdog task, so
5284 * explicitly disable watchdog tasks from being rescheduled
5286 set_bit(__E1000_DOWN, &adapter->state);
5287 del_timer_sync(&adapter->watchdog_timer);
5288 del_timer_sync(&adapter->phy_info_timer);
5290 cancel_work_sync(&adapter->reset_task);
5291 cancel_work_sync(&adapter->watchdog_task);
5292 cancel_work_sync(&adapter->downshift_task);
5293 cancel_work_sync(&adapter->update_phy_task);
5294 cancel_work_sync(&adapter->print_hang_task);
5295 flush_scheduled_work();
5298 * Release control of h/w to f/w. If f/w is AMT enabled, this
5299 * would have already happened in close and is redundant.
5301 e1000_release_hw_control(adapter);
5303 unregister_netdev(netdev);
5305 if (!e1000_check_reset_block(&adapter->hw))
5306 e1000_phy_hw_reset(&adapter->hw);
5308 e1000e_reset_interrupt_capability(adapter);
5309 kfree(adapter->tx_ring);
5310 kfree(adapter->rx_ring);
5312 iounmap(adapter->hw.hw_addr);
5313 if (adapter->hw.flash_address)
5314 iounmap(adapter->hw.flash_address);
5315 pci_release_selected_regions(pdev,
5316 pci_select_bars(pdev, IORESOURCE_MEM));
5318 free_netdev(netdev);
5321 pci_disable_pcie_error_reporting(pdev);
5323 pci_disable_device(pdev);
5326 /* PCI Error Recovery (ERS) */
5327 static struct pci_error_handlers e1000_err_handler = {
5328 .error_detected = e1000_io_error_detected,
5329 .slot_reset = e1000_io_slot_reset,
5330 .resume = e1000_io_resume,
5333 static struct pci_device_id e1000_pci_tbl[] = {
5334 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 },
5335 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 },
5336 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 },
5337 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 },
5338 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 },
5339 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 },
5340 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 },
5341 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 },
5342 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 },
5344 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 },
5345 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 },
5346 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 },
5347 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 },
5349 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 },
5350 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 },
5351 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 },
5353 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 },
5354 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 },
5355 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 },
5357 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT),
5358 board_80003es2lan },
5359 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT),
5360 board_80003es2lan },
5361 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT),
5362 board_80003es2lan },
5363 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT),
5364 board_80003es2lan },
5366 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan },
5367 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan },
5368 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan },
5369 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan },
5370 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan },
5371 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan },
5372 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan },
5374 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan },
5375 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan },
5376 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan },
5377 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan },
5378 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan },
5379 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan },
5380 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan },
5381 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan },
5382 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan },
5384 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan },
5385 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan },
5386 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan },
5388 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan },
5389 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan },
5391 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan },
5392 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan },
5393 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan },
5394 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan },
5396 { } /* terminate list */
5398 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
5400 /* PCI Device API Driver */
5401 static struct pci_driver e1000_driver = {
5402 .name = e1000e_driver_name,
5403 .id_table = e1000_pci_tbl,
5404 .probe = e1000_probe,
5405 .remove = __devexit_p(e1000_remove),
5407 /* Power Management Hooks */
5408 .suspend = e1000_suspend,
5409 .resume = e1000_resume,
5411 .shutdown = e1000_shutdown,
5412 .err_handler = &e1000_err_handler
5416 * e1000_init_module - Driver Registration Routine
5418 * e1000_init_module is the first routine called when the driver is
5419 * loaded. All it does is register with the PCI subsystem.
5421 static int __init e1000_init_module(void)
5424 printk(KERN_INFO "%s: Intel(R) PRO/1000 Network Driver - %s\n",
5425 e1000e_driver_name, e1000e_driver_version);
5426 printk(KERN_INFO "%s: Copyright (c) 1999 - 2009 Intel Corporation.\n",
5427 e1000e_driver_name);
5428 ret = pci_register_driver(&e1000_driver);
5432 module_init(e1000_init_module);
5435 * e1000_exit_module - Driver Exit Cleanup Routine
5437 * e1000_exit_module is called just before the driver is removed
5440 static void __exit e1000_exit_module(void)
5442 pci_unregister_driver(&e1000_driver);
5444 module_exit(e1000_exit_module);
5447 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
5448 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
5449 MODULE_LICENSE("GPL");
5450 MODULE_VERSION(DRV_VERSION);