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_tx_hang(struct e1000_adapter *adapter)
549 struct e1000_ring *tx_ring = adapter->tx_ring;
550 unsigned int i = tx_ring->next_to_clean;
551 unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
552 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop);
554 /* detected Tx unit hang */
555 e_err("Detected Tx Unit Hang:\n"
558 " next_to_use <%x>\n"
559 " next_to_clean <%x>\n"
560 "buffer_info[next_to_clean]:\n"
561 " time_stamp <%lx>\n"
562 " next_to_watch <%x>\n"
564 " next_to_watch.status <%x>\n",
565 readl(adapter->hw.hw_addr + tx_ring->head),
566 readl(adapter->hw.hw_addr + tx_ring->tail),
567 tx_ring->next_to_use,
568 tx_ring->next_to_clean,
569 tx_ring->buffer_info[eop].time_stamp,
572 eop_desc->upper.fields.status);
576 * e1000_clean_tx_irq - Reclaim resources after transmit completes
577 * @adapter: board private structure
579 * the return value indicates whether actual cleaning was done, there
580 * is no guarantee that everything was cleaned
582 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)
584 struct net_device *netdev = adapter->netdev;
585 struct e1000_hw *hw = &adapter->hw;
586 struct e1000_ring *tx_ring = adapter->tx_ring;
587 struct e1000_tx_desc *tx_desc, *eop_desc;
588 struct e1000_buffer *buffer_info;
590 unsigned int count = 0;
591 unsigned int total_tx_bytes = 0, total_tx_packets = 0;
593 i = tx_ring->next_to_clean;
594 eop = tx_ring->buffer_info[i].next_to_watch;
595 eop_desc = E1000_TX_DESC(*tx_ring, eop);
597 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
598 (count < tx_ring->count)) {
599 bool cleaned = false;
600 for (; !cleaned; count++) {
601 tx_desc = E1000_TX_DESC(*tx_ring, i);
602 buffer_info = &tx_ring->buffer_info[i];
603 cleaned = (i == eop);
606 struct sk_buff *skb = buffer_info->skb;
607 unsigned int segs, bytecount;
608 segs = skb_shinfo(skb)->gso_segs ?: 1;
609 /* multiply data chunks by size of headers */
610 bytecount = ((segs - 1) * skb_headlen(skb)) +
612 total_tx_packets += segs;
613 total_tx_bytes += bytecount;
616 e1000_put_txbuf(adapter, buffer_info);
617 tx_desc->upper.data = 0;
620 if (i == tx_ring->count)
624 eop = tx_ring->buffer_info[i].next_to_watch;
625 eop_desc = E1000_TX_DESC(*tx_ring, eop);
628 tx_ring->next_to_clean = i;
630 #define TX_WAKE_THRESHOLD 32
631 if (count && netif_carrier_ok(netdev) &&
632 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
633 /* Make sure that anybody stopping the queue after this
634 * sees the new next_to_clean.
638 if (netif_queue_stopped(netdev) &&
639 !(test_bit(__E1000_DOWN, &adapter->state))) {
640 netif_wake_queue(netdev);
641 ++adapter->restart_queue;
645 if (adapter->detect_tx_hung) {
646 /* Detect a transmit hang in hardware, this serializes the
647 * check with the clearing of time_stamp and movement of i */
648 adapter->detect_tx_hung = 0;
649 if (tx_ring->buffer_info[i].time_stamp &&
650 time_after(jiffies, tx_ring->buffer_info[i].time_stamp
651 + (adapter->tx_timeout_factor * HZ))
652 && !(er32(STATUS) & E1000_STATUS_TXOFF)) {
653 e1000_print_tx_hang(adapter);
654 netif_stop_queue(netdev);
657 adapter->total_tx_bytes += total_tx_bytes;
658 adapter->total_tx_packets += total_tx_packets;
659 netdev->stats.tx_bytes += total_tx_bytes;
660 netdev->stats.tx_packets += total_tx_packets;
661 return (count < tx_ring->count);
665 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
666 * @adapter: board private structure
668 * the return value indicates whether actual cleaning was done, there
669 * is no guarantee that everything was cleaned
671 static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
672 int *work_done, int work_to_do)
674 struct e1000_hw *hw = &adapter->hw;
675 union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
676 struct net_device *netdev = adapter->netdev;
677 struct pci_dev *pdev = adapter->pdev;
678 struct e1000_ring *rx_ring = adapter->rx_ring;
679 struct e1000_buffer *buffer_info, *next_buffer;
680 struct e1000_ps_page *ps_page;
684 int cleaned_count = 0;
686 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
688 i = rx_ring->next_to_clean;
689 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
690 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
691 buffer_info = &rx_ring->buffer_info[i];
693 while (staterr & E1000_RXD_STAT_DD) {
694 if (*work_done >= work_to_do)
697 skb = buffer_info->skb;
699 /* in the packet split case this is header only */
700 prefetch(skb->data - NET_IP_ALIGN);
703 if (i == rx_ring->count)
705 next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
708 next_buffer = &rx_ring->buffer_info[i];
712 pci_unmap_single(pdev, buffer_info->dma,
713 adapter->rx_ps_bsize0,
715 buffer_info->dma = 0;
717 if (!(staterr & E1000_RXD_STAT_EOP)) {
718 e_dbg("Packet Split buffers didn't pick up the full "
720 dev_kfree_skb_irq(skb);
724 if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
725 dev_kfree_skb_irq(skb);
729 length = le16_to_cpu(rx_desc->wb.middle.length0);
732 e_dbg("Last part of the packet spanning multiple "
734 dev_kfree_skb_irq(skb);
739 skb_put(skb, length);
743 * this looks ugly, but it seems compiler issues make it
744 * more efficient than reusing j
746 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
749 * page alloc/put takes too long and effects small packet
750 * throughput, so unsplit small packets and save the alloc/put
751 * only valid in softirq (napi) context to call kmap_*
753 if (l1 && (l1 <= copybreak) &&
754 ((length + l1) <= adapter->rx_ps_bsize0)) {
757 ps_page = &buffer_info->ps_pages[0];
760 * there is no documentation about how to call
761 * kmap_atomic, so we can't hold the mapping
764 pci_dma_sync_single_for_cpu(pdev, ps_page->dma,
765 PAGE_SIZE, PCI_DMA_FROMDEVICE);
766 vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ);
767 memcpy(skb_tail_pointer(skb), vaddr, l1);
768 kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
769 pci_dma_sync_single_for_device(pdev, ps_page->dma,
770 PAGE_SIZE, PCI_DMA_FROMDEVICE);
773 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING))
781 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
782 length = le16_to_cpu(rx_desc->wb.upper.length[j]);
786 ps_page = &buffer_info->ps_pages[j];
787 pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE,
790 skb_fill_page_desc(skb, j, ps_page->page, 0, length);
791 ps_page->page = NULL;
793 skb->data_len += length;
794 skb->truesize += length;
797 /* strip the ethernet crc, problem is we're using pages now so
798 * this whole operation can get a little cpu intensive
800 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING))
801 pskb_trim(skb, skb->len - 4);
804 total_rx_bytes += skb->len;
807 e1000_rx_checksum(adapter, staterr, le16_to_cpu(
808 rx_desc->wb.lower.hi_dword.csum_ip.csum), skb);
810 if (rx_desc->wb.upper.header_status &
811 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))
812 adapter->rx_hdr_split++;
814 e1000_receive_skb(adapter, netdev, skb,
815 staterr, rx_desc->wb.middle.vlan);
818 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
819 buffer_info->skb = NULL;
821 /* return some buffers to hardware, one at a time is too slow */
822 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
823 adapter->alloc_rx_buf(adapter, cleaned_count);
827 /* use prefetched values */
829 buffer_info = next_buffer;
831 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
833 rx_ring->next_to_clean = i;
835 cleaned_count = e1000_desc_unused(rx_ring);
837 adapter->alloc_rx_buf(adapter, cleaned_count);
839 adapter->total_rx_bytes += total_rx_bytes;
840 adapter->total_rx_packets += total_rx_packets;
841 netdev->stats.rx_bytes += total_rx_bytes;
842 netdev->stats.rx_packets += total_rx_packets;
847 * e1000_consume_page - helper function
849 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
854 skb->data_len += length;
855 skb->truesize += length;
859 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
860 * @adapter: board private structure
862 * the return value indicates whether actual cleaning was done, there
863 * is no guarantee that everything was cleaned
866 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
867 int *work_done, int work_to_do)
869 struct net_device *netdev = adapter->netdev;
870 struct pci_dev *pdev = adapter->pdev;
871 struct e1000_ring *rx_ring = adapter->rx_ring;
872 struct e1000_rx_desc *rx_desc, *next_rxd;
873 struct e1000_buffer *buffer_info, *next_buffer;
876 int cleaned_count = 0;
877 bool cleaned = false;
878 unsigned int total_rx_bytes=0, total_rx_packets=0;
880 i = rx_ring->next_to_clean;
881 rx_desc = E1000_RX_DESC(*rx_ring, i);
882 buffer_info = &rx_ring->buffer_info[i];
884 while (rx_desc->status & E1000_RXD_STAT_DD) {
888 if (*work_done >= work_to_do)
892 status = rx_desc->status;
893 skb = buffer_info->skb;
894 buffer_info->skb = NULL;
897 if (i == rx_ring->count)
899 next_rxd = E1000_RX_DESC(*rx_ring, i);
902 next_buffer = &rx_ring->buffer_info[i];
906 pci_unmap_page(pdev, buffer_info->dma, PAGE_SIZE,
908 buffer_info->dma = 0;
910 length = le16_to_cpu(rx_desc->length);
912 /* errors is only valid for DD + EOP descriptors */
913 if (unlikely((status & E1000_RXD_STAT_EOP) &&
914 (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) {
915 /* recycle both page and skb */
916 buffer_info->skb = skb;
917 /* an error means any chain goes out the window
919 if (rx_ring->rx_skb_top)
920 dev_kfree_skb(rx_ring->rx_skb_top);
921 rx_ring->rx_skb_top = NULL;
925 #define rxtop rx_ring->rx_skb_top
926 if (!(status & E1000_RXD_STAT_EOP)) {
927 /* this descriptor is only the beginning (or middle) */
929 /* this is the beginning of a chain */
931 skb_fill_page_desc(rxtop, 0, buffer_info->page,
934 /* this is the middle of a chain */
935 skb_fill_page_desc(rxtop,
936 skb_shinfo(rxtop)->nr_frags,
937 buffer_info->page, 0, length);
938 /* re-use the skb, only consumed the page */
939 buffer_info->skb = skb;
941 e1000_consume_page(buffer_info, rxtop, length);
945 /* end of the chain */
946 skb_fill_page_desc(rxtop,
947 skb_shinfo(rxtop)->nr_frags,
948 buffer_info->page, 0, length);
949 /* re-use the current skb, we only consumed the
951 buffer_info->skb = skb;
954 e1000_consume_page(buffer_info, skb, length);
956 /* no chain, got EOP, this buf is the packet
957 * copybreak to save the put_page/alloc_page */
958 if (length <= copybreak &&
959 skb_tailroom(skb) >= length) {
961 vaddr = kmap_atomic(buffer_info->page,
962 KM_SKB_DATA_SOFTIRQ);
963 memcpy(skb_tail_pointer(skb), vaddr,
966 KM_SKB_DATA_SOFTIRQ);
967 /* re-use the page, so don't erase
968 * buffer_info->page */
969 skb_put(skb, length);
971 skb_fill_page_desc(skb, 0,
972 buffer_info->page, 0,
974 e1000_consume_page(buffer_info, skb,
980 /* Receive Checksum Offload XXX recompute due to CRC strip? */
981 e1000_rx_checksum(adapter,
983 ((u32)(rx_desc->errors) << 24),
984 le16_to_cpu(rx_desc->csum), skb);
986 /* probably a little skewed due to removing CRC */
987 total_rx_bytes += skb->len;
990 /* eth type trans needs skb->data to point to something */
991 if (!pskb_may_pull(skb, ETH_HLEN)) {
992 e_err("pskb_may_pull failed.\n");
997 e1000_receive_skb(adapter, netdev, skb, status,
1001 rx_desc->status = 0;
1003 /* return some buffers to hardware, one at a time is too slow */
1004 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
1005 adapter->alloc_rx_buf(adapter, cleaned_count);
1009 /* use prefetched values */
1011 buffer_info = next_buffer;
1013 rx_ring->next_to_clean = i;
1015 cleaned_count = e1000_desc_unused(rx_ring);
1017 adapter->alloc_rx_buf(adapter, cleaned_count);
1019 adapter->total_rx_bytes += total_rx_bytes;
1020 adapter->total_rx_packets += total_rx_packets;
1021 netdev->stats.rx_bytes += total_rx_bytes;
1022 netdev->stats.rx_packets += total_rx_packets;
1027 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1028 * @adapter: board private structure
1030 static void e1000_clean_rx_ring(struct e1000_adapter *adapter)
1032 struct e1000_ring *rx_ring = adapter->rx_ring;
1033 struct e1000_buffer *buffer_info;
1034 struct e1000_ps_page *ps_page;
1035 struct pci_dev *pdev = adapter->pdev;
1038 /* Free all the Rx ring sk_buffs */
1039 for (i = 0; i < rx_ring->count; i++) {
1040 buffer_info = &rx_ring->buffer_info[i];
1041 if (buffer_info->dma) {
1042 if (adapter->clean_rx == e1000_clean_rx_irq)
1043 pci_unmap_single(pdev, buffer_info->dma,
1044 adapter->rx_buffer_len,
1045 PCI_DMA_FROMDEVICE);
1046 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq)
1047 pci_unmap_page(pdev, buffer_info->dma,
1049 PCI_DMA_FROMDEVICE);
1050 else if (adapter->clean_rx == e1000_clean_rx_irq_ps)
1051 pci_unmap_single(pdev, buffer_info->dma,
1052 adapter->rx_ps_bsize0,
1053 PCI_DMA_FROMDEVICE);
1054 buffer_info->dma = 0;
1057 if (buffer_info->page) {
1058 put_page(buffer_info->page);
1059 buffer_info->page = NULL;
1062 if (buffer_info->skb) {
1063 dev_kfree_skb(buffer_info->skb);
1064 buffer_info->skb = NULL;
1067 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
1068 ps_page = &buffer_info->ps_pages[j];
1071 pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE,
1072 PCI_DMA_FROMDEVICE);
1074 put_page(ps_page->page);
1075 ps_page->page = NULL;
1079 /* there also may be some cached data from a chained receive */
1080 if (rx_ring->rx_skb_top) {
1081 dev_kfree_skb(rx_ring->rx_skb_top);
1082 rx_ring->rx_skb_top = NULL;
1085 /* Zero out the descriptor ring */
1086 memset(rx_ring->desc, 0, rx_ring->size);
1088 rx_ring->next_to_clean = 0;
1089 rx_ring->next_to_use = 0;
1091 writel(0, adapter->hw.hw_addr + rx_ring->head);
1092 writel(0, adapter->hw.hw_addr + rx_ring->tail);
1095 static void e1000e_downshift_workaround(struct work_struct *work)
1097 struct e1000_adapter *adapter = container_of(work,
1098 struct e1000_adapter, downshift_task);
1100 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw);
1104 * e1000_intr_msi - Interrupt Handler
1105 * @irq: interrupt number
1106 * @data: pointer to a network interface device structure
1108 static irqreturn_t e1000_intr_msi(int irq, void *data)
1110 struct net_device *netdev = data;
1111 struct e1000_adapter *adapter = netdev_priv(netdev);
1112 struct e1000_hw *hw = &adapter->hw;
1113 u32 icr = er32(ICR);
1116 * read ICR disables interrupts using IAM
1119 if (icr & E1000_ICR_LSC) {
1120 hw->mac.get_link_status = 1;
1122 * ICH8 workaround-- Call gig speed drop workaround on cable
1123 * disconnect (LSC) before accessing any PHY registers
1125 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1126 (!(er32(STATUS) & E1000_STATUS_LU)))
1127 schedule_work(&adapter->downshift_task);
1130 * 80003ES2LAN workaround-- For packet buffer work-around on
1131 * link down event; disable receives here in the ISR and reset
1132 * adapter in watchdog
1134 if (netif_carrier_ok(netdev) &&
1135 adapter->flags & FLAG_RX_NEEDS_RESTART) {
1136 /* disable receives */
1137 u32 rctl = er32(RCTL);
1138 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1139 adapter->flags |= FLAG_RX_RESTART_NOW;
1141 /* guard against interrupt when we're going down */
1142 if (!test_bit(__E1000_DOWN, &adapter->state))
1143 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1146 if (napi_schedule_prep(&adapter->napi)) {
1147 adapter->total_tx_bytes = 0;
1148 adapter->total_tx_packets = 0;
1149 adapter->total_rx_bytes = 0;
1150 adapter->total_rx_packets = 0;
1151 __napi_schedule(&adapter->napi);
1158 * e1000_intr - Interrupt Handler
1159 * @irq: interrupt number
1160 * @data: pointer to a network interface device structure
1162 static irqreturn_t e1000_intr(int irq, void *data)
1164 struct net_device *netdev = data;
1165 struct e1000_adapter *adapter = netdev_priv(netdev);
1166 struct e1000_hw *hw = &adapter->hw;
1167 u32 rctl, icr = er32(ICR);
1169 if (!icr || test_bit(__E1000_DOWN, &adapter->state))
1170 return IRQ_NONE; /* Not our interrupt */
1173 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1174 * not set, then the adapter didn't send an interrupt
1176 if (!(icr & E1000_ICR_INT_ASSERTED))
1180 * Interrupt Auto-Mask...upon reading ICR,
1181 * interrupts are masked. No need for the
1185 if (icr & E1000_ICR_LSC) {
1186 hw->mac.get_link_status = 1;
1188 * ICH8 workaround-- Call gig speed drop workaround on cable
1189 * disconnect (LSC) before accessing any PHY registers
1191 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1192 (!(er32(STATUS) & E1000_STATUS_LU)))
1193 schedule_work(&adapter->downshift_task);
1196 * 80003ES2LAN workaround--
1197 * For packet buffer work-around on link down event;
1198 * disable receives here in the ISR and
1199 * reset adapter in watchdog
1201 if (netif_carrier_ok(netdev) &&
1202 (adapter->flags & FLAG_RX_NEEDS_RESTART)) {
1203 /* disable receives */
1205 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1206 adapter->flags |= FLAG_RX_RESTART_NOW;
1208 /* guard against interrupt when we're going down */
1209 if (!test_bit(__E1000_DOWN, &adapter->state))
1210 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1213 if (napi_schedule_prep(&adapter->napi)) {
1214 adapter->total_tx_bytes = 0;
1215 adapter->total_tx_packets = 0;
1216 adapter->total_rx_bytes = 0;
1217 adapter->total_rx_packets = 0;
1218 __napi_schedule(&adapter->napi);
1224 static irqreturn_t e1000_msix_other(int irq, void *data)
1226 struct net_device *netdev = data;
1227 struct e1000_adapter *adapter = netdev_priv(netdev);
1228 struct e1000_hw *hw = &adapter->hw;
1229 u32 icr = er32(ICR);
1231 if (!(icr & E1000_ICR_INT_ASSERTED)) {
1232 if (!test_bit(__E1000_DOWN, &adapter->state))
1233 ew32(IMS, E1000_IMS_OTHER);
1237 if (icr & adapter->eiac_mask)
1238 ew32(ICS, (icr & adapter->eiac_mask));
1240 if (icr & E1000_ICR_OTHER) {
1241 if (!(icr & E1000_ICR_LSC))
1242 goto no_link_interrupt;
1243 hw->mac.get_link_status = 1;
1244 /* guard against interrupt when we're going down */
1245 if (!test_bit(__E1000_DOWN, &adapter->state))
1246 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1250 if (!test_bit(__E1000_DOWN, &adapter->state))
1251 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER);
1257 static irqreturn_t e1000_intr_msix_tx(int irq, void *data)
1259 struct net_device *netdev = data;
1260 struct e1000_adapter *adapter = netdev_priv(netdev);
1261 struct e1000_hw *hw = &adapter->hw;
1262 struct e1000_ring *tx_ring = adapter->tx_ring;
1265 adapter->total_tx_bytes = 0;
1266 adapter->total_tx_packets = 0;
1268 if (!e1000_clean_tx_irq(adapter))
1269 /* Ring was not completely cleaned, so fire another interrupt */
1270 ew32(ICS, tx_ring->ims_val);
1275 static irqreturn_t e1000_intr_msix_rx(int irq, void *data)
1277 struct net_device *netdev = data;
1278 struct e1000_adapter *adapter = netdev_priv(netdev);
1280 /* Write the ITR value calculated at the end of the
1281 * previous interrupt.
1283 if (adapter->rx_ring->set_itr) {
1284 writel(1000000000 / (adapter->rx_ring->itr_val * 256),
1285 adapter->hw.hw_addr + adapter->rx_ring->itr_register);
1286 adapter->rx_ring->set_itr = 0;
1289 if (napi_schedule_prep(&adapter->napi)) {
1290 adapter->total_rx_bytes = 0;
1291 adapter->total_rx_packets = 0;
1292 __napi_schedule(&adapter->napi);
1298 * e1000_configure_msix - Configure MSI-X hardware
1300 * e1000_configure_msix sets up the hardware to properly
1301 * generate MSI-X interrupts.
1303 static void e1000_configure_msix(struct e1000_adapter *adapter)
1305 struct e1000_hw *hw = &adapter->hw;
1306 struct e1000_ring *rx_ring = adapter->rx_ring;
1307 struct e1000_ring *tx_ring = adapter->tx_ring;
1309 u32 ctrl_ext, ivar = 0;
1311 adapter->eiac_mask = 0;
1313 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1314 if (hw->mac.type == e1000_82574) {
1315 u32 rfctl = er32(RFCTL);
1316 rfctl |= E1000_RFCTL_ACK_DIS;
1320 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1321 /* Configure Rx vector */
1322 rx_ring->ims_val = E1000_IMS_RXQ0;
1323 adapter->eiac_mask |= rx_ring->ims_val;
1324 if (rx_ring->itr_val)
1325 writel(1000000000 / (rx_ring->itr_val * 256),
1326 hw->hw_addr + rx_ring->itr_register);
1328 writel(1, hw->hw_addr + rx_ring->itr_register);
1329 ivar = E1000_IVAR_INT_ALLOC_VALID | vector;
1331 /* Configure Tx vector */
1332 tx_ring->ims_val = E1000_IMS_TXQ0;
1334 if (tx_ring->itr_val)
1335 writel(1000000000 / (tx_ring->itr_val * 256),
1336 hw->hw_addr + tx_ring->itr_register);
1338 writel(1, hw->hw_addr + tx_ring->itr_register);
1339 adapter->eiac_mask |= tx_ring->ims_val;
1340 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8);
1342 /* set vector for Other Causes, e.g. link changes */
1344 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16);
1345 if (rx_ring->itr_val)
1346 writel(1000000000 / (rx_ring->itr_val * 256),
1347 hw->hw_addr + E1000_EITR_82574(vector));
1349 writel(1, hw->hw_addr + E1000_EITR_82574(vector));
1351 /* Cause Tx interrupts on every write back */
1356 /* enable MSI-X PBA support */
1357 ctrl_ext = er32(CTRL_EXT);
1358 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR;
1360 /* Auto-Mask Other interrupts upon ICR read */
1361 #define E1000_EIAC_MASK_82574 0x01F00000
1362 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER);
1363 ctrl_ext |= E1000_CTRL_EXT_EIAME;
1364 ew32(CTRL_EXT, ctrl_ext);
1368 void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter)
1370 if (adapter->msix_entries) {
1371 pci_disable_msix(adapter->pdev);
1372 kfree(adapter->msix_entries);
1373 adapter->msix_entries = NULL;
1374 } else if (adapter->flags & FLAG_MSI_ENABLED) {
1375 pci_disable_msi(adapter->pdev);
1376 adapter->flags &= ~FLAG_MSI_ENABLED;
1383 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1385 * Attempt to configure interrupts using the best available
1386 * capabilities of the hardware and kernel.
1388 void e1000e_set_interrupt_capability(struct e1000_adapter *adapter)
1394 switch (adapter->int_mode) {
1395 case E1000E_INT_MODE_MSIX:
1396 if (adapter->flags & FLAG_HAS_MSIX) {
1397 numvecs = 3; /* RxQ0, TxQ0 and other */
1398 adapter->msix_entries = kcalloc(numvecs,
1399 sizeof(struct msix_entry),
1401 if (adapter->msix_entries) {
1402 for (i = 0; i < numvecs; i++)
1403 adapter->msix_entries[i].entry = i;
1405 err = pci_enable_msix(adapter->pdev,
1406 adapter->msix_entries,
1411 /* MSI-X failed, so fall through and try MSI */
1412 e_err("Failed to initialize MSI-X interrupts. "
1413 "Falling back to MSI interrupts.\n");
1414 e1000e_reset_interrupt_capability(adapter);
1416 adapter->int_mode = E1000E_INT_MODE_MSI;
1418 case E1000E_INT_MODE_MSI:
1419 if (!pci_enable_msi(adapter->pdev)) {
1420 adapter->flags |= FLAG_MSI_ENABLED;
1422 adapter->int_mode = E1000E_INT_MODE_LEGACY;
1423 e_err("Failed to initialize MSI interrupts. Falling "
1424 "back to legacy interrupts.\n");
1427 case E1000E_INT_MODE_LEGACY:
1428 /* Don't do anything; this is the system default */
1436 * e1000_request_msix - Initialize MSI-X interrupts
1438 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1441 static int e1000_request_msix(struct e1000_adapter *adapter)
1443 struct net_device *netdev = adapter->netdev;
1444 int err = 0, vector = 0;
1446 if (strlen(netdev->name) < (IFNAMSIZ - 5))
1447 sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name);
1449 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
1450 err = request_irq(adapter->msix_entries[vector].vector,
1451 e1000_intr_msix_rx, 0, adapter->rx_ring->name,
1455 adapter->rx_ring->itr_register = E1000_EITR_82574(vector);
1456 adapter->rx_ring->itr_val = adapter->itr;
1459 if (strlen(netdev->name) < (IFNAMSIZ - 5))
1460 sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name);
1462 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
1463 err = request_irq(adapter->msix_entries[vector].vector,
1464 e1000_intr_msix_tx, 0, adapter->tx_ring->name,
1468 adapter->tx_ring->itr_register = E1000_EITR_82574(vector);
1469 adapter->tx_ring->itr_val = adapter->itr;
1472 err = request_irq(adapter->msix_entries[vector].vector,
1473 e1000_msix_other, 0, netdev->name, netdev);
1477 e1000_configure_msix(adapter);
1484 * e1000_request_irq - initialize interrupts
1486 * Attempts to configure interrupts using the best available
1487 * capabilities of the hardware and kernel.
1489 static int e1000_request_irq(struct e1000_adapter *adapter)
1491 struct net_device *netdev = adapter->netdev;
1494 if (adapter->msix_entries) {
1495 err = e1000_request_msix(adapter);
1498 /* fall back to MSI */
1499 e1000e_reset_interrupt_capability(adapter);
1500 adapter->int_mode = E1000E_INT_MODE_MSI;
1501 e1000e_set_interrupt_capability(adapter);
1503 if (adapter->flags & FLAG_MSI_ENABLED) {
1504 err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0,
1505 netdev->name, netdev);
1509 /* fall back to legacy interrupt */
1510 e1000e_reset_interrupt_capability(adapter);
1511 adapter->int_mode = E1000E_INT_MODE_LEGACY;
1514 err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED,
1515 netdev->name, netdev);
1517 e_err("Unable to allocate interrupt, Error: %d\n", err);
1522 static void e1000_free_irq(struct e1000_adapter *adapter)
1524 struct net_device *netdev = adapter->netdev;
1526 if (adapter->msix_entries) {
1529 free_irq(adapter->msix_entries[vector].vector, netdev);
1532 free_irq(adapter->msix_entries[vector].vector, netdev);
1535 /* Other Causes interrupt vector */
1536 free_irq(adapter->msix_entries[vector].vector, netdev);
1540 free_irq(adapter->pdev->irq, netdev);
1544 * e1000_irq_disable - Mask off interrupt generation on the NIC
1546 static void e1000_irq_disable(struct e1000_adapter *adapter)
1548 struct e1000_hw *hw = &adapter->hw;
1551 if (adapter->msix_entries)
1552 ew32(EIAC_82574, 0);
1554 synchronize_irq(adapter->pdev->irq);
1558 * e1000_irq_enable - Enable default interrupt generation settings
1560 static void e1000_irq_enable(struct e1000_adapter *adapter)
1562 struct e1000_hw *hw = &adapter->hw;
1564 if (adapter->msix_entries) {
1565 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574);
1566 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC);
1568 ew32(IMS, IMS_ENABLE_MASK);
1574 * e1000_get_hw_control - get control of the h/w from f/w
1575 * @adapter: address of board private structure
1577 * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1578 * For ASF and Pass Through versions of f/w this means that
1579 * the driver is loaded. For AMT version (only with 82573)
1580 * of the f/w this means that the network i/f is open.
1582 static void e1000_get_hw_control(struct e1000_adapter *adapter)
1584 struct e1000_hw *hw = &adapter->hw;
1588 /* Let firmware know the driver has taken over */
1589 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
1591 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
1592 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
1593 ctrl_ext = er32(CTRL_EXT);
1594 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
1599 * e1000_release_hw_control - release control of the h/w to f/w
1600 * @adapter: address of board private structure
1602 * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1603 * For ASF and Pass Through versions of f/w this means that the
1604 * driver is no longer loaded. For AMT version (only with 82573) i
1605 * of the f/w this means that the network i/f is closed.
1608 static void e1000_release_hw_control(struct e1000_adapter *adapter)
1610 struct e1000_hw *hw = &adapter->hw;
1614 /* Let firmware taken over control of h/w */
1615 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
1617 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
1618 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
1619 ctrl_ext = er32(CTRL_EXT);
1620 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
1625 * @e1000_alloc_ring - allocate memory for a ring structure
1627 static int e1000_alloc_ring_dma(struct e1000_adapter *adapter,
1628 struct e1000_ring *ring)
1630 struct pci_dev *pdev = adapter->pdev;
1632 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma,
1641 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
1642 * @adapter: board private structure
1644 * Return 0 on success, negative on failure
1646 int e1000e_setup_tx_resources(struct e1000_adapter *adapter)
1648 struct e1000_ring *tx_ring = adapter->tx_ring;
1649 int err = -ENOMEM, size;
1651 size = sizeof(struct e1000_buffer) * tx_ring->count;
1652 tx_ring->buffer_info = vmalloc(size);
1653 if (!tx_ring->buffer_info)
1655 memset(tx_ring->buffer_info, 0, size);
1657 /* round up to nearest 4K */
1658 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
1659 tx_ring->size = ALIGN(tx_ring->size, 4096);
1661 err = e1000_alloc_ring_dma(adapter, tx_ring);
1665 tx_ring->next_to_use = 0;
1666 tx_ring->next_to_clean = 0;
1670 vfree(tx_ring->buffer_info);
1671 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1676 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
1677 * @adapter: board private structure
1679 * Returns 0 on success, negative on failure
1681 int e1000e_setup_rx_resources(struct e1000_adapter *adapter)
1683 struct e1000_ring *rx_ring = adapter->rx_ring;
1684 struct e1000_buffer *buffer_info;
1685 int i, size, desc_len, err = -ENOMEM;
1687 size = sizeof(struct e1000_buffer) * rx_ring->count;
1688 rx_ring->buffer_info = vmalloc(size);
1689 if (!rx_ring->buffer_info)
1691 memset(rx_ring->buffer_info, 0, size);
1693 for (i = 0; i < rx_ring->count; i++) {
1694 buffer_info = &rx_ring->buffer_info[i];
1695 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS,
1696 sizeof(struct e1000_ps_page),
1698 if (!buffer_info->ps_pages)
1702 desc_len = sizeof(union e1000_rx_desc_packet_split);
1704 /* Round up to nearest 4K */
1705 rx_ring->size = rx_ring->count * desc_len;
1706 rx_ring->size = ALIGN(rx_ring->size, 4096);
1708 err = e1000_alloc_ring_dma(adapter, rx_ring);
1712 rx_ring->next_to_clean = 0;
1713 rx_ring->next_to_use = 0;
1714 rx_ring->rx_skb_top = NULL;
1719 for (i = 0; i < rx_ring->count; i++) {
1720 buffer_info = &rx_ring->buffer_info[i];
1721 kfree(buffer_info->ps_pages);
1724 vfree(rx_ring->buffer_info);
1725 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1730 * e1000_clean_tx_ring - Free Tx Buffers
1731 * @adapter: board private structure
1733 static void e1000_clean_tx_ring(struct e1000_adapter *adapter)
1735 struct e1000_ring *tx_ring = adapter->tx_ring;
1736 struct e1000_buffer *buffer_info;
1740 for (i = 0; i < tx_ring->count; i++) {
1741 buffer_info = &tx_ring->buffer_info[i];
1742 e1000_put_txbuf(adapter, buffer_info);
1745 size = sizeof(struct e1000_buffer) * tx_ring->count;
1746 memset(tx_ring->buffer_info, 0, size);
1748 memset(tx_ring->desc, 0, tx_ring->size);
1750 tx_ring->next_to_use = 0;
1751 tx_ring->next_to_clean = 0;
1753 writel(0, adapter->hw.hw_addr + tx_ring->head);
1754 writel(0, adapter->hw.hw_addr + tx_ring->tail);
1758 * e1000e_free_tx_resources - Free Tx Resources per Queue
1759 * @adapter: board private structure
1761 * Free all transmit software resources
1763 void e1000e_free_tx_resources(struct e1000_adapter *adapter)
1765 struct pci_dev *pdev = adapter->pdev;
1766 struct e1000_ring *tx_ring = adapter->tx_ring;
1768 e1000_clean_tx_ring(adapter);
1770 vfree(tx_ring->buffer_info);
1771 tx_ring->buffer_info = NULL;
1773 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
1775 tx_ring->desc = NULL;
1779 * e1000e_free_rx_resources - Free Rx Resources
1780 * @adapter: board private structure
1782 * Free all receive software resources
1785 void e1000e_free_rx_resources(struct e1000_adapter *adapter)
1787 struct pci_dev *pdev = adapter->pdev;
1788 struct e1000_ring *rx_ring = adapter->rx_ring;
1791 e1000_clean_rx_ring(adapter);
1793 for (i = 0; i < rx_ring->count; i++) {
1794 kfree(rx_ring->buffer_info[i].ps_pages);
1797 vfree(rx_ring->buffer_info);
1798 rx_ring->buffer_info = NULL;
1800 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
1802 rx_ring->desc = NULL;
1806 * e1000_update_itr - update the dynamic ITR value based on statistics
1807 * @adapter: pointer to adapter
1808 * @itr_setting: current adapter->itr
1809 * @packets: the number of packets during this measurement interval
1810 * @bytes: the number of bytes during this measurement interval
1812 * Stores a new ITR value based on packets and byte
1813 * counts during the last interrupt. The advantage of per interrupt
1814 * computation is faster updates and more accurate ITR for the current
1815 * traffic pattern. Constants in this function were computed
1816 * based on theoretical maximum wire speed and thresholds were set based
1817 * on testing data as well as attempting to minimize response time
1818 * while increasing bulk throughput. This functionality is controlled
1819 * by the InterruptThrottleRate module parameter.
1821 static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
1822 u16 itr_setting, int packets,
1825 unsigned int retval = itr_setting;
1828 goto update_itr_done;
1830 switch (itr_setting) {
1831 case lowest_latency:
1832 /* handle TSO and jumbo frames */
1833 if (bytes/packets > 8000)
1834 retval = bulk_latency;
1835 else if ((packets < 5) && (bytes > 512)) {
1836 retval = low_latency;
1839 case low_latency: /* 50 usec aka 20000 ints/s */
1840 if (bytes > 10000) {
1841 /* this if handles the TSO accounting */
1842 if (bytes/packets > 8000) {
1843 retval = bulk_latency;
1844 } else if ((packets < 10) || ((bytes/packets) > 1200)) {
1845 retval = bulk_latency;
1846 } else if ((packets > 35)) {
1847 retval = lowest_latency;
1849 } else if (bytes/packets > 2000) {
1850 retval = bulk_latency;
1851 } else if (packets <= 2 && bytes < 512) {
1852 retval = lowest_latency;
1855 case bulk_latency: /* 250 usec aka 4000 ints/s */
1856 if (bytes > 25000) {
1858 retval = low_latency;
1860 } else if (bytes < 6000) {
1861 retval = low_latency;
1870 static void e1000_set_itr(struct e1000_adapter *adapter)
1872 struct e1000_hw *hw = &adapter->hw;
1874 u32 new_itr = adapter->itr;
1876 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
1877 if (adapter->link_speed != SPEED_1000) {
1883 adapter->tx_itr = e1000_update_itr(adapter,
1885 adapter->total_tx_packets,
1886 adapter->total_tx_bytes);
1887 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1888 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
1889 adapter->tx_itr = low_latency;
1891 adapter->rx_itr = e1000_update_itr(adapter,
1893 adapter->total_rx_packets,
1894 adapter->total_rx_bytes);
1895 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1896 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
1897 adapter->rx_itr = low_latency;
1899 current_itr = max(adapter->rx_itr, adapter->tx_itr);
1901 switch (current_itr) {
1902 /* counts and packets in update_itr are dependent on these numbers */
1903 case lowest_latency:
1907 new_itr = 20000; /* aka hwitr = ~200 */
1917 if (new_itr != adapter->itr) {
1919 * this attempts to bias the interrupt rate towards Bulk
1920 * by adding intermediate steps when interrupt rate is
1923 new_itr = new_itr > adapter->itr ?
1924 min(adapter->itr + (new_itr >> 2), new_itr) :
1926 adapter->itr = new_itr;
1927 adapter->rx_ring->itr_val = new_itr;
1928 if (adapter->msix_entries)
1929 adapter->rx_ring->set_itr = 1;
1931 ew32(ITR, 1000000000 / (new_itr * 256));
1936 * e1000_alloc_queues - Allocate memory for all rings
1937 * @adapter: board private structure to initialize
1939 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter)
1941 adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
1942 if (!adapter->tx_ring)
1945 adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
1946 if (!adapter->rx_ring)
1951 e_err("Unable to allocate memory for queues\n");
1952 kfree(adapter->rx_ring);
1953 kfree(adapter->tx_ring);
1958 * e1000_clean - NAPI Rx polling callback
1959 * @napi: struct associated with this polling callback
1960 * @budget: amount of packets driver is allowed to process this poll
1962 static int e1000_clean(struct napi_struct *napi, int budget)
1964 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
1965 struct e1000_hw *hw = &adapter->hw;
1966 struct net_device *poll_dev = adapter->netdev;
1967 int tx_cleaned = 1, work_done = 0;
1969 adapter = netdev_priv(poll_dev);
1971 if (adapter->msix_entries &&
1972 !(adapter->rx_ring->ims_val & adapter->tx_ring->ims_val))
1975 tx_cleaned = e1000_clean_tx_irq(adapter);
1978 adapter->clean_rx(adapter, &work_done, budget);
1983 /* If budget not fully consumed, exit the polling mode */
1984 if (work_done < budget) {
1985 if (adapter->itr_setting & 3)
1986 e1000_set_itr(adapter);
1987 napi_complete(napi);
1988 if (!test_bit(__E1000_DOWN, &adapter->state)) {
1989 if (adapter->msix_entries)
1990 ew32(IMS, adapter->rx_ring->ims_val);
1992 e1000_irq_enable(adapter);
1999 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
2001 struct e1000_adapter *adapter = netdev_priv(netdev);
2002 struct e1000_hw *hw = &adapter->hw;
2005 /* don't update vlan cookie if already programmed */
2006 if ((adapter->hw.mng_cookie.status &
2007 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2008 (vid == adapter->mng_vlan_id))
2010 /* add VID to filter table */
2011 index = (vid >> 5) & 0x7F;
2012 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2013 vfta |= (1 << (vid & 0x1F));
2014 e1000e_write_vfta(hw, index, vfta);
2017 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
2019 struct e1000_adapter *adapter = netdev_priv(netdev);
2020 struct e1000_hw *hw = &adapter->hw;
2023 if (!test_bit(__E1000_DOWN, &adapter->state))
2024 e1000_irq_disable(adapter);
2025 vlan_group_set_device(adapter->vlgrp, vid, NULL);
2027 if (!test_bit(__E1000_DOWN, &adapter->state))
2028 e1000_irq_enable(adapter);
2030 if ((adapter->hw.mng_cookie.status &
2031 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2032 (vid == adapter->mng_vlan_id)) {
2033 /* release control to f/w */
2034 e1000_release_hw_control(adapter);
2038 /* remove VID from filter table */
2039 index = (vid >> 5) & 0x7F;
2040 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2041 vfta &= ~(1 << (vid & 0x1F));
2042 e1000e_write_vfta(hw, index, vfta);
2045 static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
2047 struct net_device *netdev = adapter->netdev;
2048 u16 vid = adapter->hw.mng_cookie.vlan_id;
2049 u16 old_vid = adapter->mng_vlan_id;
2051 if (!adapter->vlgrp)
2054 if (!vlan_group_get_device(adapter->vlgrp, vid)) {
2055 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2056 if (adapter->hw.mng_cookie.status &
2057 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
2058 e1000_vlan_rx_add_vid(netdev, vid);
2059 adapter->mng_vlan_id = vid;
2062 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) &&
2064 !vlan_group_get_device(adapter->vlgrp, old_vid))
2065 e1000_vlan_rx_kill_vid(netdev, old_vid);
2067 adapter->mng_vlan_id = vid;
2072 static void e1000_vlan_rx_register(struct net_device *netdev,
2073 struct vlan_group *grp)
2075 struct e1000_adapter *adapter = netdev_priv(netdev);
2076 struct e1000_hw *hw = &adapter->hw;
2079 if (!test_bit(__E1000_DOWN, &adapter->state))
2080 e1000_irq_disable(adapter);
2081 adapter->vlgrp = grp;
2084 /* enable VLAN tag insert/strip */
2086 ctrl |= E1000_CTRL_VME;
2089 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2090 /* enable VLAN receive filtering */
2092 rctl &= ~E1000_RCTL_CFIEN;
2094 e1000_update_mng_vlan(adapter);
2097 /* disable VLAN tag insert/strip */
2099 ctrl &= ~E1000_CTRL_VME;
2102 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2103 if (adapter->mng_vlan_id !=
2104 (u16)E1000_MNG_VLAN_NONE) {
2105 e1000_vlan_rx_kill_vid(netdev,
2106 adapter->mng_vlan_id);
2107 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2112 if (!test_bit(__E1000_DOWN, &adapter->state))
2113 e1000_irq_enable(adapter);
2116 static void e1000_restore_vlan(struct e1000_adapter *adapter)
2120 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
2122 if (!adapter->vlgrp)
2125 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
2126 if (!vlan_group_get_device(adapter->vlgrp, vid))
2128 e1000_vlan_rx_add_vid(adapter->netdev, vid);
2132 static void e1000_init_manageability(struct e1000_adapter *adapter)
2134 struct e1000_hw *hw = &adapter->hw;
2137 if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
2143 * enable receiving management packets to the host. this will probably
2144 * generate destination unreachable messages from the host OS, but
2145 * the packets will be handled on SMBUS
2147 manc |= E1000_MANC_EN_MNG2HOST;
2148 manc2h = er32(MANC2H);
2149 #define E1000_MNG2HOST_PORT_623 (1 << 5)
2150 #define E1000_MNG2HOST_PORT_664 (1 << 6)
2151 manc2h |= E1000_MNG2HOST_PORT_623;
2152 manc2h |= E1000_MNG2HOST_PORT_664;
2153 ew32(MANC2H, manc2h);
2158 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
2159 * @adapter: board private structure
2161 * Configure the Tx unit of the MAC after a reset.
2163 static void e1000_configure_tx(struct e1000_adapter *adapter)
2165 struct e1000_hw *hw = &adapter->hw;
2166 struct e1000_ring *tx_ring = adapter->tx_ring;
2168 u32 tdlen, tctl, tipg, tarc;
2171 /* Setup the HW Tx Head and Tail descriptor pointers */
2172 tdba = tx_ring->dma;
2173 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc);
2174 ew32(TDBAL, (tdba & DMA_BIT_MASK(32)));
2175 ew32(TDBAH, (tdba >> 32));
2179 tx_ring->head = E1000_TDH;
2180 tx_ring->tail = E1000_TDT;
2182 /* Set the default values for the Tx Inter Packet Gap timer */
2183 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; /* 8 */
2184 ipgr1 = DEFAULT_82543_TIPG_IPGR1; /* 8 */
2185 ipgr2 = DEFAULT_82543_TIPG_IPGR2; /* 6 */
2187 if (adapter->flags & FLAG_TIPG_MEDIUM_FOR_80003ESLAN)
2188 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; /* 7 */
2190 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
2191 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
2194 /* Set the Tx Interrupt Delay register */
2195 ew32(TIDV, adapter->tx_int_delay);
2196 /* Tx irq moderation */
2197 ew32(TADV, adapter->tx_abs_int_delay);
2199 /* Program the Transmit Control Register */
2201 tctl &= ~E1000_TCTL_CT;
2202 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
2203 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
2205 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) {
2206 tarc = er32(TARC(0));
2208 * set the speed mode bit, we'll clear it if we're not at
2209 * gigabit link later
2211 #define SPEED_MODE_BIT (1 << 21)
2212 tarc |= SPEED_MODE_BIT;
2213 ew32(TARC(0), tarc);
2216 /* errata: program both queues to unweighted RR */
2217 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) {
2218 tarc = er32(TARC(0));
2220 ew32(TARC(0), tarc);
2221 tarc = er32(TARC(1));
2223 ew32(TARC(1), tarc);
2226 /* Setup Transmit Descriptor Settings for eop descriptor */
2227 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
2229 /* only set IDE if we are delaying interrupts using the timers */
2230 if (adapter->tx_int_delay)
2231 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
2233 /* enable Report Status bit */
2234 adapter->txd_cmd |= E1000_TXD_CMD_RS;
2238 e1000e_config_collision_dist(hw);
2240 adapter->tx_queue_len = adapter->netdev->tx_queue_len;
2244 * e1000_setup_rctl - configure the receive control registers
2245 * @adapter: Board private structure
2247 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2248 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2249 static void e1000_setup_rctl(struct e1000_adapter *adapter)
2251 struct e1000_hw *hw = &adapter->hw;
2256 /* Program MC offset vector base */
2258 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2259 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
2260 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
2261 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
2263 /* Do not Store bad packets */
2264 rctl &= ~E1000_RCTL_SBP;
2266 /* Enable Long Packet receive */
2267 if (adapter->netdev->mtu <= ETH_DATA_LEN)
2268 rctl &= ~E1000_RCTL_LPE;
2270 rctl |= E1000_RCTL_LPE;
2272 /* Some systems expect that the CRC is included in SMBUS traffic. The
2273 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2274 * host memory when this is enabled
2276 if (adapter->flags2 & FLAG2_CRC_STRIPPING)
2277 rctl |= E1000_RCTL_SECRC;
2279 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
2280 if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) {
2283 e1e_rphy(hw, PHY_REG(770, 26), &phy_data);
2285 phy_data |= (1 << 2);
2286 e1e_wphy(hw, PHY_REG(770, 26), phy_data);
2288 e1e_rphy(hw, 22, &phy_data);
2290 phy_data |= (1 << 14);
2291 e1e_wphy(hw, 0x10, 0x2823);
2292 e1e_wphy(hw, 0x11, 0x0003);
2293 e1e_wphy(hw, 22, phy_data);
2296 /* Setup buffer sizes */
2297 rctl &= ~E1000_RCTL_SZ_4096;
2298 rctl |= E1000_RCTL_BSEX;
2299 switch (adapter->rx_buffer_len) {
2301 rctl |= E1000_RCTL_SZ_256;
2302 rctl &= ~E1000_RCTL_BSEX;
2305 rctl |= E1000_RCTL_SZ_512;
2306 rctl &= ~E1000_RCTL_BSEX;
2309 rctl |= E1000_RCTL_SZ_1024;
2310 rctl &= ~E1000_RCTL_BSEX;
2314 rctl |= E1000_RCTL_SZ_2048;
2315 rctl &= ~E1000_RCTL_BSEX;
2318 rctl |= E1000_RCTL_SZ_4096;
2321 rctl |= E1000_RCTL_SZ_8192;
2324 rctl |= E1000_RCTL_SZ_16384;
2329 * 82571 and greater support packet-split where the protocol
2330 * header is placed in skb->data and the packet data is
2331 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2332 * In the case of a non-split, skb->data is linearly filled,
2333 * followed by the page buffers. Therefore, skb->data is
2334 * sized to hold the largest protocol header.
2336 * allocations using alloc_page take too long for regular MTU
2337 * so only enable packet split for jumbo frames
2339 * Using pages when the page size is greater than 16k wastes
2340 * a lot of memory, since we allocate 3 pages at all times
2343 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
2344 if (!(adapter->flags & FLAG_IS_ICH) && (pages <= 3) &&
2345 (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE))
2346 adapter->rx_ps_pages = pages;
2348 adapter->rx_ps_pages = 0;
2350 if (adapter->rx_ps_pages) {
2351 /* Configure extra packet-split registers */
2352 rfctl = er32(RFCTL);
2353 rfctl |= E1000_RFCTL_EXTEN;
2355 * disable packet split support for IPv6 extension headers,
2356 * because some malformed IPv6 headers can hang the Rx
2358 rfctl |= (E1000_RFCTL_IPV6_EX_DIS |
2359 E1000_RFCTL_NEW_IPV6_EXT_DIS);
2363 /* Enable Packet split descriptors */
2364 rctl |= E1000_RCTL_DTYP_PS;
2366 psrctl |= adapter->rx_ps_bsize0 >>
2367 E1000_PSRCTL_BSIZE0_SHIFT;
2369 switch (adapter->rx_ps_pages) {
2371 psrctl |= PAGE_SIZE <<
2372 E1000_PSRCTL_BSIZE3_SHIFT;
2374 psrctl |= PAGE_SIZE <<
2375 E1000_PSRCTL_BSIZE2_SHIFT;
2377 psrctl |= PAGE_SIZE >>
2378 E1000_PSRCTL_BSIZE1_SHIFT;
2382 ew32(PSRCTL, psrctl);
2386 /* just started the receive unit, no need to restart */
2387 adapter->flags &= ~FLAG_RX_RESTART_NOW;
2391 * e1000_configure_rx - Configure Receive Unit after Reset
2392 * @adapter: board private structure
2394 * Configure the Rx unit of the MAC after a reset.
2396 static void e1000_configure_rx(struct e1000_adapter *adapter)
2398 struct e1000_hw *hw = &adapter->hw;
2399 struct e1000_ring *rx_ring = adapter->rx_ring;
2401 u32 rdlen, rctl, rxcsum, ctrl_ext;
2403 if (adapter->rx_ps_pages) {
2404 /* this is a 32 byte descriptor */
2405 rdlen = rx_ring->count *
2406 sizeof(union e1000_rx_desc_packet_split);
2407 adapter->clean_rx = e1000_clean_rx_irq_ps;
2408 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
2409 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) {
2410 rdlen = rx_ring->count * sizeof(struct e1000_rx_desc);
2411 adapter->clean_rx = e1000_clean_jumbo_rx_irq;
2412 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
2414 rdlen = rx_ring->count * sizeof(struct e1000_rx_desc);
2415 adapter->clean_rx = e1000_clean_rx_irq;
2416 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
2419 /* disable receives while setting up the descriptors */
2421 ew32(RCTL, rctl & ~E1000_RCTL_EN);
2425 /* set the Receive Delay Timer Register */
2426 ew32(RDTR, adapter->rx_int_delay);
2428 /* irq moderation */
2429 ew32(RADV, adapter->rx_abs_int_delay);
2430 if (adapter->itr_setting != 0)
2431 ew32(ITR, 1000000000 / (adapter->itr * 256));
2433 ctrl_ext = er32(CTRL_EXT);
2434 /* Auto-Mask interrupts upon ICR access */
2435 ctrl_ext |= E1000_CTRL_EXT_IAME;
2436 ew32(IAM, 0xffffffff);
2437 ew32(CTRL_EXT, ctrl_ext);
2441 * Setup the HW Rx Head and Tail Descriptor Pointers and
2442 * the Base and Length of the Rx Descriptor Ring
2444 rdba = rx_ring->dma;
2445 ew32(RDBAL, (rdba & DMA_BIT_MASK(32)));
2446 ew32(RDBAH, (rdba >> 32));
2450 rx_ring->head = E1000_RDH;
2451 rx_ring->tail = E1000_RDT;
2453 /* Enable Receive Checksum Offload for TCP and UDP */
2454 rxcsum = er32(RXCSUM);
2455 if (adapter->flags & FLAG_RX_CSUM_ENABLED) {
2456 rxcsum |= E1000_RXCSUM_TUOFL;
2459 * IPv4 payload checksum for UDP fragments must be
2460 * used in conjunction with packet-split.
2462 if (adapter->rx_ps_pages)
2463 rxcsum |= E1000_RXCSUM_IPPCSE;
2465 rxcsum &= ~E1000_RXCSUM_TUOFL;
2466 /* no need to clear IPPCSE as it defaults to 0 */
2468 ew32(RXCSUM, rxcsum);
2471 * Enable early receives on supported devices, only takes effect when
2472 * packet size is equal or larger than the specified value (in 8 byte
2473 * units), e.g. using jumbo frames when setting to E1000_ERT_2048
2475 if (adapter->flags & FLAG_HAS_ERT) {
2476 if (adapter->netdev->mtu > ETH_DATA_LEN) {
2477 u32 rxdctl = er32(RXDCTL(0));
2478 ew32(RXDCTL(0), rxdctl | 0x3);
2479 ew32(ERT, E1000_ERT_2048 | (1 << 13));
2481 * With jumbo frames and early-receive enabled,
2482 * excessive C-state transition latencies result in
2483 * dropped transactions.
2485 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY,
2486 adapter->netdev->name, 55);
2488 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY,
2489 adapter->netdev->name,
2490 PM_QOS_DEFAULT_VALUE);
2494 /* Enable Receives */
2499 * e1000_update_mc_addr_list - Update Multicast addresses
2500 * @hw: pointer to the HW structure
2501 * @mc_addr_list: array of multicast addresses to program
2502 * @mc_addr_count: number of multicast addresses to program
2503 * @rar_used_count: the first RAR register free to program
2504 * @rar_count: total number of supported Receive Address Registers
2506 * Updates the Receive Address Registers and Multicast Table Array.
2507 * The caller must have a packed mc_addr_list of multicast addresses.
2508 * The parameter rar_count will usually be hw->mac.rar_entry_count
2509 * unless there are workarounds that change this. Currently no func pointer
2510 * exists and all implementations are handled in the generic version of this
2513 static void e1000_update_mc_addr_list(struct e1000_hw *hw, u8 *mc_addr_list,
2514 u32 mc_addr_count, u32 rar_used_count,
2517 hw->mac.ops.update_mc_addr_list(hw, mc_addr_list, mc_addr_count,
2518 rar_used_count, rar_count);
2522 * e1000_set_multi - Multicast and Promiscuous mode set
2523 * @netdev: network interface device structure
2525 * The set_multi entry point is called whenever the multicast address
2526 * list or the network interface flags are updated. This routine is
2527 * responsible for configuring the hardware for proper multicast,
2528 * promiscuous mode, and all-multi behavior.
2530 static void e1000_set_multi(struct net_device *netdev)
2532 struct e1000_adapter *adapter = netdev_priv(netdev);
2533 struct e1000_hw *hw = &adapter->hw;
2534 struct e1000_mac_info *mac = &hw->mac;
2535 struct dev_mc_list *mc_ptr;
2540 /* Check for Promiscuous and All Multicast modes */
2544 if (netdev->flags & IFF_PROMISC) {
2545 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
2546 rctl &= ~E1000_RCTL_VFE;
2548 if (netdev->flags & IFF_ALLMULTI) {
2549 rctl |= E1000_RCTL_MPE;
2550 rctl &= ~E1000_RCTL_UPE;
2552 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
2554 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
2555 rctl |= E1000_RCTL_VFE;
2560 if (netdev->mc_count) {
2561 mta_list = kmalloc(netdev->mc_count * 6, GFP_ATOMIC);
2565 /* prepare a packed array of only addresses. */
2566 mc_ptr = netdev->mc_list;
2568 for (i = 0; i < netdev->mc_count; i++) {
2571 memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr,
2573 mc_ptr = mc_ptr->next;
2576 e1000_update_mc_addr_list(hw, mta_list, i, 1,
2577 mac->rar_entry_count);
2581 * if we're called from probe, we might not have
2582 * anything to do here, so clear out the list
2584 e1000_update_mc_addr_list(hw, NULL, 0, 1, mac->rar_entry_count);
2589 * e1000_configure - configure the hardware for Rx and Tx
2590 * @adapter: private board structure
2592 static void e1000_configure(struct e1000_adapter *adapter)
2594 e1000_set_multi(adapter->netdev);
2596 e1000_restore_vlan(adapter);
2597 e1000_init_manageability(adapter);
2599 e1000_configure_tx(adapter);
2600 e1000_setup_rctl(adapter);
2601 e1000_configure_rx(adapter);
2602 adapter->alloc_rx_buf(adapter, e1000_desc_unused(adapter->rx_ring));
2606 * e1000e_power_up_phy - restore link in case the phy was powered down
2607 * @adapter: address of board private structure
2609 * The phy may be powered down to save power and turn off link when the
2610 * driver is unloaded and wake on lan is not enabled (among others)
2611 * *** this routine MUST be followed by a call to e1000e_reset ***
2613 void e1000e_power_up_phy(struct e1000_adapter *adapter)
2617 /* Just clear the power down bit to wake the phy back up */
2618 if (adapter->hw.phy.media_type == e1000_media_type_copper) {
2620 * According to the manual, the phy will retain its
2621 * settings across a power-down/up cycle
2623 e1e_rphy(&adapter->hw, PHY_CONTROL, &mii_reg);
2624 mii_reg &= ~MII_CR_POWER_DOWN;
2625 e1e_wphy(&adapter->hw, PHY_CONTROL, mii_reg);
2628 adapter->hw.mac.ops.setup_link(&adapter->hw);
2632 * e1000_power_down_phy - Power down the PHY
2634 * Power down the PHY so no link is implied when interface is down
2635 * The PHY cannot be powered down is management or WoL is active
2637 static void e1000_power_down_phy(struct e1000_adapter *adapter)
2639 struct e1000_hw *hw = &adapter->hw;
2642 /* WoL is enabled */
2646 /* non-copper PHY? */
2647 if (adapter->hw.phy.media_type != e1000_media_type_copper)
2650 /* reset is blocked because of a SoL/IDER session */
2651 if (e1000e_check_mng_mode(hw) || e1000_check_reset_block(hw))
2654 /* manageability (AMT) is enabled */
2655 if (er32(MANC) & E1000_MANC_SMBUS_EN)
2658 /* power down the PHY */
2659 e1e_rphy(hw, PHY_CONTROL, &mii_reg);
2660 mii_reg |= MII_CR_POWER_DOWN;
2661 e1e_wphy(hw, PHY_CONTROL, mii_reg);
2666 * e1000e_reset - bring the hardware into a known good state
2668 * This function boots the hardware and enables some settings that
2669 * require a configuration cycle of the hardware - those cannot be
2670 * set/changed during runtime. After reset the device needs to be
2671 * properly configured for Rx, Tx etc.
2673 void e1000e_reset(struct e1000_adapter *adapter)
2675 struct e1000_mac_info *mac = &adapter->hw.mac;
2676 struct e1000_fc_info *fc = &adapter->hw.fc;
2677 struct e1000_hw *hw = &adapter->hw;
2678 u32 tx_space, min_tx_space, min_rx_space;
2679 u32 pba = adapter->pba;
2682 /* reset Packet Buffer Allocation to default */
2685 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
2687 * To maintain wire speed transmits, the Tx FIFO should be
2688 * large enough to accommodate two full transmit packets,
2689 * rounded up to the next 1KB and expressed in KB. Likewise,
2690 * the Rx FIFO should be large enough to accommodate at least
2691 * one full receive packet and is similarly rounded up and
2695 /* upper 16 bits has Tx packet buffer allocation size in KB */
2696 tx_space = pba >> 16;
2697 /* lower 16 bits has Rx packet buffer allocation size in KB */
2700 * the Tx fifo also stores 16 bytes of information about the tx
2701 * but don't include ethernet FCS because hardware appends it
2703 min_tx_space = (adapter->max_frame_size +
2704 sizeof(struct e1000_tx_desc) -
2706 min_tx_space = ALIGN(min_tx_space, 1024);
2707 min_tx_space >>= 10;
2708 /* software strips receive CRC, so leave room for it */
2709 min_rx_space = adapter->max_frame_size;
2710 min_rx_space = ALIGN(min_rx_space, 1024);
2711 min_rx_space >>= 10;
2714 * If current Tx allocation is less than the min Tx FIFO size,
2715 * and the min Tx FIFO size is less than the current Rx FIFO
2716 * allocation, take space away from current Rx allocation
2718 if ((tx_space < min_tx_space) &&
2719 ((min_tx_space - tx_space) < pba)) {
2720 pba -= min_tx_space - tx_space;
2723 * if short on Rx space, Rx wins and must trump tx
2724 * adjustment or use Early Receive if available
2726 if ((pba < min_rx_space) &&
2727 (!(adapter->flags & FLAG_HAS_ERT)))
2728 /* ERT enabled in e1000_configure_rx */
2737 * flow control settings
2739 * The high water mark must be low enough to fit two full frame
2740 * (or the size used for early receive) above it in the Rx FIFO.
2741 * Set it to the lower of:
2742 * - 90% of the Rx FIFO size, and
2743 * - the full Rx FIFO size minus the early receive size (for parts
2744 * with ERT support assuming ERT set to E1000_ERT_2048), or
2745 * - the full Rx FIFO size minus two full frames
2747 if ((adapter->flags & FLAG_HAS_ERT) &&
2748 (adapter->netdev->mtu > ETH_DATA_LEN))
2749 hwm = min(((pba << 10) * 9 / 10),
2750 ((pba << 10) - (E1000_ERT_2048 << 3)));
2752 hwm = min(((pba << 10) * 9 / 10),
2753 ((pba << 10) - (2 * adapter->max_frame_size)));
2755 fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */
2756 fc->low_water = (fc->high_water - (2 * adapter->max_frame_size));
2757 fc->low_water &= E1000_FCRTL_RTL; /* 8-byte granularity */
2759 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME)
2760 fc->pause_time = 0xFFFF;
2762 fc->pause_time = E1000_FC_PAUSE_TIME;
2764 fc->current_mode = fc->requested_mode;
2766 /* Allow time for pending master requests to run */
2767 mac->ops.reset_hw(hw);
2770 * For parts with AMT enabled, let the firmware know
2771 * that the network interface is in control
2773 if (adapter->flags & FLAG_HAS_AMT)
2774 e1000_get_hw_control(adapter);
2777 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP)
2778 e1e_wphy(&adapter->hw, BM_WUC, 0);
2780 if (mac->ops.init_hw(hw))
2781 e_err("Hardware Error\n");
2783 e1000_update_mng_vlan(adapter);
2785 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
2786 ew32(VET, ETH_P_8021Q);
2788 e1000e_reset_adaptive(hw);
2789 e1000_get_phy_info(hw);
2791 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) &&
2792 !(adapter->flags & FLAG_SMART_POWER_DOWN)) {
2795 * speed up time to link by disabling smart power down, ignore
2796 * the return value of this function because there is nothing
2797 * different we would do if it failed
2799 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
2800 phy_data &= ~IGP02E1000_PM_SPD;
2801 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
2805 int e1000e_up(struct e1000_adapter *adapter)
2807 struct e1000_hw *hw = &adapter->hw;
2809 /* DMA latency requirement to workaround early-receive/jumbo issue */
2810 if (adapter->flags & FLAG_HAS_ERT)
2811 pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY,
2812 adapter->netdev->name,
2813 PM_QOS_DEFAULT_VALUE);
2815 /* hardware has been reset, we need to reload some things */
2816 e1000_configure(adapter);
2818 clear_bit(__E1000_DOWN, &adapter->state);
2820 napi_enable(&adapter->napi);
2821 if (adapter->msix_entries)
2822 e1000_configure_msix(adapter);
2823 e1000_irq_enable(adapter);
2825 netif_wake_queue(adapter->netdev);
2827 /* fire a link change interrupt to start the watchdog */
2828 ew32(ICS, E1000_ICS_LSC);
2832 void e1000e_down(struct e1000_adapter *adapter)
2834 struct net_device *netdev = adapter->netdev;
2835 struct e1000_hw *hw = &adapter->hw;
2839 * signal that we're down so the interrupt handler does not
2840 * reschedule our watchdog timer
2842 set_bit(__E1000_DOWN, &adapter->state);
2844 /* disable receives in the hardware */
2846 ew32(RCTL, rctl & ~E1000_RCTL_EN);
2847 /* flush and sleep below */
2849 netif_stop_queue(netdev);
2851 /* disable transmits in the hardware */
2853 tctl &= ~E1000_TCTL_EN;
2855 /* flush both disables and wait for them to finish */
2859 napi_disable(&adapter->napi);
2860 e1000_irq_disable(adapter);
2862 del_timer_sync(&adapter->watchdog_timer);
2863 del_timer_sync(&adapter->phy_info_timer);
2865 netdev->tx_queue_len = adapter->tx_queue_len;
2866 netif_carrier_off(netdev);
2867 adapter->link_speed = 0;
2868 adapter->link_duplex = 0;
2870 if (!pci_channel_offline(adapter->pdev))
2871 e1000e_reset(adapter);
2872 e1000_clean_tx_ring(adapter);
2873 e1000_clean_rx_ring(adapter);
2875 if (adapter->flags & FLAG_HAS_ERT)
2876 pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY,
2877 adapter->netdev->name);
2880 * TODO: for power management, we could drop the link and
2881 * pci_disable_device here.
2885 void e1000e_reinit_locked(struct e1000_adapter *adapter)
2888 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
2890 e1000e_down(adapter);
2892 clear_bit(__E1000_RESETTING, &adapter->state);
2896 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
2897 * @adapter: board private structure to initialize
2899 * e1000_sw_init initializes the Adapter private data structure.
2900 * Fields are initialized based on PCI device information and
2901 * OS network device settings (MTU size).
2903 static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
2905 struct net_device *netdev = adapter->netdev;
2907 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
2908 adapter->rx_ps_bsize0 = 128;
2909 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
2910 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
2912 e1000e_set_interrupt_capability(adapter);
2914 if (e1000_alloc_queues(adapter))
2917 /* Explicitly disable IRQ since the NIC can be in any state. */
2918 e1000_irq_disable(adapter);
2920 set_bit(__E1000_DOWN, &adapter->state);
2925 * e1000_intr_msi_test - Interrupt Handler
2926 * @irq: interrupt number
2927 * @data: pointer to a network interface device structure
2929 static irqreturn_t e1000_intr_msi_test(int irq, void *data)
2931 struct net_device *netdev = data;
2932 struct e1000_adapter *adapter = netdev_priv(netdev);
2933 struct e1000_hw *hw = &adapter->hw;
2934 u32 icr = er32(ICR);
2936 e_dbg("icr is %08X\n", icr);
2937 if (icr & E1000_ICR_RXSEQ) {
2938 adapter->flags &= ~FLAG_MSI_TEST_FAILED;
2946 * e1000_test_msi_interrupt - Returns 0 for successful test
2947 * @adapter: board private struct
2949 * code flow taken from tg3.c
2951 static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
2953 struct net_device *netdev = adapter->netdev;
2954 struct e1000_hw *hw = &adapter->hw;
2957 /* poll_enable hasn't been called yet, so don't need disable */
2958 /* clear any pending events */
2961 /* free the real vector and request a test handler */
2962 e1000_free_irq(adapter);
2963 e1000e_reset_interrupt_capability(adapter);
2965 /* Assume that the test fails, if it succeeds then the test
2966 * MSI irq handler will unset this flag */
2967 adapter->flags |= FLAG_MSI_TEST_FAILED;
2969 err = pci_enable_msi(adapter->pdev);
2971 goto msi_test_failed;
2973 err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0,
2974 netdev->name, netdev);
2976 pci_disable_msi(adapter->pdev);
2977 goto msi_test_failed;
2982 e1000_irq_enable(adapter);
2984 /* fire an unusual interrupt on the test handler */
2985 ew32(ICS, E1000_ICS_RXSEQ);
2989 e1000_irq_disable(adapter);
2993 if (adapter->flags & FLAG_MSI_TEST_FAILED) {
2994 adapter->int_mode = E1000E_INT_MODE_LEGACY;
2996 e_info("MSI interrupt test failed!\n");
2999 free_irq(adapter->pdev->irq, netdev);
3000 pci_disable_msi(adapter->pdev);
3003 goto msi_test_failed;
3005 /* okay so the test worked, restore settings */
3006 e_dbg("MSI interrupt test succeeded!\n");
3008 e1000e_set_interrupt_capability(adapter);
3009 e1000_request_irq(adapter);
3014 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3015 * @adapter: board private struct
3017 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3019 static int e1000_test_msi(struct e1000_adapter *adapter)
3024 if (!(adapter->flags & FLAG_MSI_ENABLED))
3027 /* disable SERR in case the MSI write causes a master abort */
3028 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
3029 pci_write_config_word(adapter->pdev, PCI_COMMAND,
3030 pci_cmd & ~PCI_COMMAND_SERR);
3032 err = e1000_test_msi_interrupt(adapter);
3034 /* restore previous setting of command word */
3035 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);
3041 /* EIO means MSI test failed */
3045 /* back to INTx mode */
3046 e_warn("MSI interrupt test failed, using legacy interrupt.\n");
3048 e1000_free_irq(adapter);
3050 err = e1000_request_irq(adapter);
3056 * e1000_open - Called when a network interface is made active
3057 * @netdev: network interface device structure
3059 * Returns 0 on success, negative value on failure
3061 * The open entry point is called when a network interface is made
3062 * active by the system (IFF_UP). At this point all resources needed
3063 * for transmit and receive operations are allocated, the interrupt
3064 * handler is registered with the OS, the watchdog timer is started,
3065 * and the stack is notified that the interface is ready.
3067 static int e1000_open(struct net_device *netdev)
3069 struct e1000_adapter *adapter = netdev_priv(netdev);
3070 struct e1000_hw *hw = &adapter->hw;
3073 /* disallow open during test */
3074 if (test_bit(__E1000_TESTING, &adapter->state))
3077 netif_carrier_off(netdev);
3079 /* allocate transmit descriptors */
3080 err = e1000e_setup_tx_resources(adapter);
3084 /* allocate receive descriptors */
3085 err = e1000e_setup_rx_resources(adapter);
3089 e1000e_power_up_phy(adapter);
3091 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
3092 if ((adapter->hw.mng_cookie.status &
3093 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
3094 e1000_update_mng_vlan(adapter);
3097 * If AMT is enabled, let the firmware know that the network
3098 * interface is now open
3100 if (adapter->flags & FLAG_HAS_AMT)
3101 e1000_get_hw_control(adapter);
3104 * before we allocate an interrupt, we must be ready to handle it.
3105 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3106 * as soon as we call pci_request_irq, so we have to setup our
3107 * clean_rx handler before we do so.
3109 e1000_configure(adapter);
3111 err = e1000_request_irq(adapter);
3116 * Work around PCIe errata with MSI interrupts causing some chipsets to
3117 * ignore e1000e MSI messages, which means we need to test our MSI
3120 if (adapter->int_mode != E1000E_INT_MODE_LEGACY) {
3121 err = e1000_test_msi(adapter);
3123 e_err("Interrupt allocation failed\n");
3128 /* From here on the code is the same as e1000e_up() */
3129 clear_bit(__E1000_DOWN, &adapter->state);
3131 napi_enable(&adapter->napi);
3133 e1000_irq_enable(adapter);
3135 netif_start_queue(netdev);
3137 /* fire a link status change interrupt to start the watchdog */
3138 ew32(ICS, E1000_ICS_LSC);
3143 e1000_release_hw_control(adapter);
3144 e1000_power_down_phy(adapter);
3145 e1000e_free_rx_resources(adapter);
3147 e1000e_free_tx_resources(adapter);
3149 e1000e_reset(adapter);
3155 * e1000_close - Disables a network interface
3156 * @netdev: network interface device structure
3158 * Returns 0, this is not allowed to fail
3160 * The close entry point is called when an interface is de-activated
3161 * by the OS. The hardware is still under the drivers control, but
3162 * needs to be disabled. A global MAC reset is issued to stop the
3163 * hardware, and all transmit and receive resources are freed.
3165 static int e1000_close(struct net_device *netdev)
3167 struct e1000_adapter *adapter = netdev_priv(netdev);
3169 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
3170 e1000e_down(adapter);
3171 e1000_power_down_phy(adapter);
3172 e1000_free_irq(adapter);
3174 e1000e_free_tx_resources(adapter);
3175 e1000e_free_rx_resources(adapter);
3178 * kill manageability vlan ID if supported, but not if a vlan with
3179 * the same ID is registered on the host OS (let 8021q kill it)
3181 if ((adapter->hw.mng_cookie.status &
3182 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
3184 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id)))
3185 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
3188 * If AMT is enabled, let the firmware know that the network
3189 * interface is now closed
3191 if (adapter->flags & FLAG_HAS_AMT)
3192 e1000_release_hw_control(adapter);
3197 * e1000_set_mac - Change the Ethernet Address of the NIC
3198 * @netdev: network interface device structure
3199 * @p: pointer to an address structure
3201 * Returns 0 on success, negative on failure
3203 static int e1000_set_mac(struct net_device *netdev, void *p)
3205 struct e1000_adapter *adapter = netdev_priv(netdev);
3206 struct sockaddr *addr = p;
3208 if (!is_valid_ether_addr(addr->sa_data))
3209 return -EADDRNOTAVAIL;
3211 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
3212 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
3214 e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
3216 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) {
3217 /* activate the work around */
3218 e1000e_set_laa_state_82571(&adapter->hw, 1);
3221 * Hold a copy of the LAA in RAR[14] This is done so that
3222 * between the time RAR[0] gets clobbered and the time it
3223 * gets fixed (in e1000_watchdog), the actual LAA is in one
3224 * of the RARs and no incoming packets directed to this port
3225 * are dropped. Eventually the LAA will be in RAR[0] and
3228 e1000e_rar_set(&adapter->hw,
3229 adapter->hw.mac.addr,
3230 adapter->hw.mac.rar_entry_count - 1);
3237 * e1000e_update_phy_task - work thread to update phy
3238 * @work: pointer to our work struct
3240 * this worker thread exists because we must acquire a
3241 * semaphore to read the phy, which we could msleep while
3242 * waiting for it, and we can't msleep in a timer.
3244 static void e1000e_update_phy_task(struct work_struct *work)
3246 struct e1000_adapter *adapter = container_of(work,
3247 struct e1000_adapter, update_phy_task);
3248 e1000_get_phy_info(&adapter->hw);
3252 * Need to wait a few seconds after link up to get diagnostic information from
3255 static void e1000_update_phy_info(unsigned long data)
3257 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
3258 schedule_work(&adapter->update_phy_task);
3262 * e1000e_update_stats - Update the board statistics counters
3263 * @adapter: board private structure
3265 void e1000e_update_stats(struct e1000_adapter *adapter)
3267 struct net_device *netdev = adapter->netdev;
3268 struct e1000_hw *hw = &adapter->hw;
3269 struct pci_dev *pdev = adapter->pdev;
3273 * Prevent stats update while adapter is being reset, or if the pci
3274 * connection is down.
3276 if (adapter->link_speed == 0)
3278 if (pci_channel_offline(pdev))
3281 adapter->stats.crcerrs += er32(CRCERRS);
3282 adapter->stats.gprc += er32(GPRC);
3283 adapter->stats.gorc += er32(GORCL);
3284 er32(GORCH); /* Clear gorc */
3285 adapter->stats.bprc += er32(BPRC);
3286 adapter->stats.mprc += er32(MPRC);
3287 adapter->stats.roc += er32(ROC);
3289 adapter->stats.mpc += er32(MPC);
3290 if ((hw->phy.type == e1000_phy_82578) ||
3291 (hw->phy.type == e1000_phy_82577)) {
3292 e1e_rphy(hw, HV_SCC_UPPER, &phy_data);
3293 e1e_rphy(hw, HV_SCC_LOWER, &phy_data);
3294 adapter->stats.scc += phy_data;
3296 e1e_rphy(hw, HV_ECOL_UPPER, &phy_data);
3297 e1e_rphy(hw, HV_ECOL_LOWER, &phy_data);
3298 adapter->stats.ecol += phy_data;
3300 e1e_rphy(hw, HV_MCC_UPPER, &phy_data);
3301 e1e_rphy(hw, HV_MCC_LOWER, &phy_data);
3302 adapter->stats.mcc += phy_data;
3304 e1e_rphy(hw, HV_LATECOL_UPPER, &phy_data);
3305 e1e_rphy(hw, HV_LATECOL_LOWER, &phy_data);
3306 adapter->stats.latecol += phy_data;
3308 e1e_rphy(hw, HV_DC_UPPER, &phy_data);
3309 e1e_rphy(hw, HV_DC_LOWER, &phy_data);
3310 adapter->stats.dc += phy_data;
3312 adapter->stats.scc += er32(SCC);
3313 adapter->stats.ecol += er32(ECOL);
3314 adapter->stats.mcc += er32(MCC);
3315 adapter->stats.latecol += er32(LATECOL);
3316 adapter->stats.dc += er32(DC);
3318 adapter->stats.xonrxc += er32(XONRXC);
3319 adapter->stats.xontxc += er32(XONTXC);
3320 adapter->stats.xoffrxc += er32(XOFFRXC);
3321 adapter->stats.xofftxc += er32(XOFFTXC);
3322 adapter->stats.gptc += er32(GPTC);
3323 adapter->stats.gotc += er32(GOTCL);
3324 er32(GOTCH); /* Clear gotc */
3325 adapter->stats.rnbc += er32(RNBC);
3326 adapter->stats.ruc += er32(RUC);
3328 adapter->stats.mptc += er32(MPTC);
3329 adapter->stats.bptc += er32(BPTC);
3331 /* used for adaptive IFS */
3333 hw->mac.tx_packet_delta = er32(TPT);
3334 adapter->stats.tpt += hw->mac.tx_packet_delta;
3335 if ((hw->phy.type == e1000_phy_82578) ||
3336 (hw->phy.type == e1000_phy_82577)) {
3337 e1e_rphy(hw, HV_COLC_UPPER, &phy_data);
3338 e1e_rphy(hw, HV_COLC_LOWER, &phy_data);
3339 hw->mac.collision_delta = phy_data;
3341 hw->mac.collision_delta = er32(COLC);
3343 adapter->stats.colc += hw->mac.collision_delta;
3345 adapter->stats.algnerrc += er32(ALGNERRC);
3346 adapter->stats.rxerrc += er32(RXERRC);
3347 if ((hw->phy.type == e1000_phy_82578) ||
3348 (hw->phy.type == e1000_phy_82577)) {
3349 e1e_rphy(hw, HV_TNCRS_UPPER, &phy_data);
3350 e1e_rphy(hw, HV_TNCRS_LOWER, &phy_data);
3351 adapter->stats.tncrs += phy_data;
3353 if ((hw->mac.type != e1000_82574) &&
3354 (hw->mac.type != e1000_82583))
3355 adapter->stats.tncrs += er32(TNCRS);
3357 adapter->stats.cexterr += er32(CEXTERR);
3358 adapter->stats.tsctc += er32(TSCTC);
3359 adapter->stats.tsctfc += er32(TSCTFC);
3361 /* Fill out the OS statistics structure */
3362 netdev->stats.multicast = adapter->stats.mprc;
3363 netdev->stats.collisions = adapter->stats.colc;
3368 * RLEC on some newer hardware can be incorrect so build
3369 * our own version based on RUC and ROC
3371 netdev->stats.rx_errors = adapter->stats.rxerrc +
3372 adapter->stats.crcerrs + adapter->stats.algnerrc +
3373 adapter->stats.ruc + adapter->stats.roc +
3374 adapter->stats.cexterr;
3375 netdev->stats.rx_length_errors = adapter->stats.ruc +
3377 netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
3378 netdev->stats.rx_frame_errors = adapter->stats.algnerrc;
3379 netdev->stats.rx_missed_errors = adapter->stats.mpc;
3382 netdev->stats.tx_errors = adapter->stats.ecol +
3383 adapter->stats.latecol;
3384 netdev->stats.tx_aborted_errors = adapter->stats.ecol;
3385 netdev->stats.tx_window_errors = adapter->stats.latecol;
3386 netdev->stats.tx_carrier_errors = adapter->stats.tncrs;
3388 /* Tx Dropped needs to be maintained elsewhere */
3390 /* Management Stats */
3391 adapter->stats.mgptc += er32(MGTPTC);
3392 adapter->stats.mgprc += er32(MGTPRC);
3393 adapter->stats.mgpdc += er32(MGTPDC);
3397 * e1000_phy_read_status - Update the PHY register status snapshot
3398 * @adapter: board private structure
3400 static void e1000_phy_read_status(struct e1000_adapter *adapter)
3402 struct e1000_hw *hw = &adapter->hw;
3403 struct e1000_phy_regs *phy = &adapter->phy_regs;
3406 if ((er32(STATUS) & E1000_STATUS_LU) &&
3407 (adapter->hw.phy.media_type == e1000_media_type_copper)) {
3408 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr);
3409 ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr);
3410 ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise);
3411 ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa);
3412 ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion);
3413 ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000);
3414 ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000);
3415 ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus);
3417 e_warn("Error reading PHY register\n");
3420 * Do not read PHY registers if link is not up
3421 * Set values to typical power-on defaults
3423 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX);
3424 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL |
3425 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE |
3427 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP |
3428 ADVERTISE_ALL | ADVERTISE_CSMA);
3430 phy->expansion = EXPANSION_ENABLENPAGE;
3431 phy->ctrl1000 = ADVERTISE_1000FULL;
3433 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF);
3437 static void e1000_print_link_info(struct e1000_adapter *adapter)
3439 struct e1000_hw *hw = &adapter->hw;
3440 u32 ctrl = er32(CTRL);
3442 /* Link status message must follow this format for user tools */
3443 printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s, "
3444 "Flow Control: %s\n",
3445 adapter->netdev->name,
3446 adapter->link_speed,
3447 (adapter->link_duplex == FULL_DUPLEX) ?
3448 "Full Duplex" : "Half Duplex",
3449 ((ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE)) ?
3451 ((ctrl & E1000_CTRL_RFCE) ? "RX" :
3452 ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None" )));
3455 bool e1000_has_link(struct e1000_adapter *adapter)
3457 struct e1000_hw *hw = &adapter->hw;
3458 bool link_active = 0;
3462 * get_link_status is set on LSC (link status) interrupt or
3463 * Rx sequence error interrupt. get_link_status will stay
3464 * false until the check_for_link establishes link
3465 * for copper adapters ONLY
3467 switch (hw->phy.media_type) {
3468 case e1000_media_type_copper:
3469 if (hw->mac.get_link_status) {
3470 ret_val = hw->mac.ops.check_for_link(hw);
3471 link_active = !hw->mac.get_link_status;
3476 case e1000_media_type_fiber:
3477 ret_val = hw->mac.ops.check_for_link(hw);
3478 link_active = !!(er32(STATUS) & E1000_STATUS_LU);
3480 case e1000_media_type_internal_serdes:
3481 ret_val = hw->mac.ops.check_for_link(hw);
3482 link_active = adapter->hw.mac.serdes_has_link;
3485 case e1000_media_type_unknown:
3489 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) &&
3490 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
3491 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
3492 e_info("Gigabit has been disabled, downgrading speed\n");
3498 static void e1000e_enable_receives(struct e1000_adapter *adapter)
3500 /* make sure the receive unit is started */
3501 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
3502 (adapter->flags & FLAG_RX_RESTART_NOW)) {
3503 struct e1000_hw *hw = &adapter->hw;
3504 u32 rctl = er32(RCTL);
3505 ew32(RCTL, rctl | E1000_RCTL_EN);
3506 adapter->flags &= ~FLAG_RX_RESTART_NOW;
3511 * e1000_watchdog - Timer Call-back
3512 * @data: pointer to adapter cast into an unsigned long
3514 static void e1000_watchdog(unsigned long data)
3516 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
3518 /* Do the rest outside of interrupt context */
3519 schedule_work(&adapter->watchdog_task);
3521 /* TODO: make this use queue_delayed_work() */
3524 static void e1000_watchdog_task(struct work_struct *work)
3526 struct e1000_adapter *adapter = container_of(work,
3527 struct e1000_adapter, watchdog_task);
3528 struct net_device *netdev = adapter->netdev;
3529 struct e1000_mac_info *mac = &adapter->hw.mac;
3530 struct e1000_phy_info *phy = &adapter->hw.phy;
3531 struct e1000_ring *tx_ring = adapter->tx_ring;
3532 struct e1000_hw *hw = &adapter->hw;
3536 link = e1000_has_link(adapter);
3537 if ((netif_carrier_ok(netdev)) && link) {
3538 e1000e_enable_receives(adapter);
3542 if ((e1000e_enable_tx_pkt_filtering(hw)) &&
3543 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id))
3544 e1000_update_mng_vlan(adapter);
3547 if (!netif_carrier_ok(netdev)) {
3549 /* update snapshot of PHY registers on LSC */
3550 e1000_phy_read_status(adapter);
3551 mac->ops.get_link_up_info(&adapter->hw,
3552 &adapter->link_speed,
3553 &adapter->link_duplex);
3554 e1000_print_link_info(adapter);
3556 * On supported PHYs, check for duplex mismatch only
3557 * if link has autonegotiated at 10/100 half
3559 if ((hw->phy.type == e1000_phy_igp_3 ||
3560 hw->phy.type == e1000_phy_bm) &&
3561 (hw->mac.autoneg == true) &&
3562 (adapter->link_speed == SPEED_10 ||
3563 adapter->link_speed == SPEED_100) &&
3564 (adapter->link_duplex == HALF_DUPLEX)) {
3567 e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp);
3569 if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS))
3570 e_info("Autonegotiated half duplex but"
3571 " link partner cannot autoneg. "
3572 " Try forcing full duplex if "
3573 "link gets many collisions.\n");
3577 * tweak tx_queue_len according to speed/duplex
3578 * and adjust the timeout factor
3580 netdev->tx_queue_len = adapter->tx_queue_len;
3581 adapter->tx_timeout_factor = 1;
3582 switch (adapter->link_speed) {
3585 netdev->tx_queue_len = 10;
3586 adapter->tx_timeout_factor = 16;
3590 netdev->tx_queue_len = 100;
3591 /* maybe add some timeout factor ? */
3596 * workaround: re-program speed mode bit after
3599 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) &&
3602 tarc0 = er32(TARC(0));
3603 tarc0 &= ~SPEED_MODE_BIT;
3604 ew32(TARC(0), tarc0);
3608 * disable TSO for pcie and 10/100 speeds, to avoid
3609 * some hardware issues
3611 if (!(adapter->flags & FLAG_TSO_FORCE)) {
3612 switch (adapter->link_speed) {
3615 e_info("10/100 speed: disabling TSO\n");
3616 netdev->features &= ~NETIF_F_TSO;
3617 netdev->features &= ~NETIF_F_TSO6;
3620 netdev->features |= NETIF_F_TSO;
3621 netdev->features |= NETIF_F_TSO6;
3630 * enable transmits in the hardware, need to do this
3631 * after setting TARC(0)
3634 tctl |= E1000_TCTL_EN;
3638 * Perform any post-link-up configuration before
3639 * reporting link up.
3641 if (phy->ops.cfg_on_link_up)
3642 phy->ops.cfg_on_link_up(hw);
3644 netif_carrier_on(netdev);
3646 if (!test_bit(__E1000_DOWN, &adapter->state))
3647 mod_timer(&adapter->phy_info_timer,
3648 round_jiffies(jiffies + 2 * HZ));
3651 if (netif_carrier_ok(netdev)) {
3652 adapter->link_speed = 0;
3653 adapter->link_duplex = 0;
3654 /* Link status message must follow this format */
3655 printk(KERN_INFO "e1000e: %s NIC Link is Down\n",
3656 adapter->netdev->name);
3657 netif_carrier_off(netdev);
3658 if (!test_bit(__E1000_DOWN, &adapter->state))
3659 mod_timer(&adapter->phy_info_timer,
3660 round_jiffies(jiffies + 2 * HZ));
3662 if (adapter->flags & FLAG_RX_NEEDS_RESTART)
3663 schedule_work(&adapter->reset_task);
3668 e1000e_update_stats(adapter);
3670 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
3671 adapter->tpt_old = adapter->stats.tpt;
3672 mac->collision_delta = adapter->stats.colc - adapter->colc_old;
3673 adapter->colc_old = adapter->stats.colc;
3675 adapter->gorc = adapter->stats.gorc - adapter->gorc_old;
3676 adapter->gorc_old = adapter->stats.gorc;
3677 adapter->gotc = adapter->stats.gotc - adapter->gotc_old;
3678 adapter->gotc_old = adapter->stats.gotc;
3680 e1000e_update_adaptive(&adapter->hw);
3682 if (!netif_carrier_ok(netdev)) {
3683 tx_pending = (e1000_desc_unused(tx_ring) + 1 <
3687 * We've lost link, so the controller stops DMA,
3688 * but we've got queued Tx work that's never going
3689 * to get done, so reset controller to flush Tx.
3690 * (Do the reset outside of interrupt context).
3692 adapter->tx_timeout_count++;
3693 schedule_work(&adapter->reset_task);
3694 /* return immediately since reset is imminent */
3699 /* Cause software interrupt to ensure Rx ring is cleaned */
3700 if (adapter->msix_entries)
3701 ew32(ICS, adapter->rx_ring->ims_val);
3703 ew32(ICS, E1000_ICS_RXDMT0);
3705 /* Force detection of hung controller every watchdog period */
3706 adapter->detect_tx_hung = 1;
3709 * With 82571 controllers, LAA may be overwritten due to controller
3710 * reset from the other port. Set the appropriate LAA in RAR[0]
3712 if (e1000e_get_laa_state_82571(hw))
3713 e1000e_rar_set(hw, adapter->hw.mac.addr, 0);
3715 /* Reset the timer */
3716 if (!test_bit(__E1000_DOWN, &adapter->state))
3717 mod_timer(&adapter->watchdog_timer,
3718 round_jiffies(jiffies + 2 * HZ));
3721 #define E1000_TX_FLAGS_CSUM 0x00000001
3722 #define E1000_TX_FLAGS_VLAN 0x00000002
3723 #define E1000_TX_FLAGS_TSO 0x00000004
3724 #define E1000_TX_FLAGS_IPV4 0x00000008
3725 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
3726 #define E1000_TX_FLAGS_VLAN_SHIFT 16
3728 static int e1000_tso(struct e1000_adapter *adapter,
3729 struct sk_buff *skb)
3731 struct e1000_ring *tx_ring = adapter->tx_ring;
3732 struct e1000_context_desc *context_desc;
3733 struct e1000_buffer *buffer_info;
3736 u16 ipcse = 0, tucse, mss;
3737 u8 ipcss, ipcso, tucss, tucso, hdr_len;
3740 if (!skb_is_gso(skb))
3743 if (skb_header_cloned(skb)) {
3744 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
3749 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
3750 mss = skb_shinfo(skb)->gso_size;
3751 if (skb->protocol == htons(ETH_P_IP)) {
3752 struct iphdr *iph = ip_hdr(skb);
3755 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
3757 cmd_length = E1000_TXD_CMD_IP;
3758 ipcse = skb_transport_offset(skb) - 1;
3759 } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) {
3760 ipv6_hdr(skb)->payload_len = 0;
3761 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
3762 &ipv6_hdr(skb)->daddr,
3766 ipcss = skb_network_offset(skb);
3767 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
3768 tucss = skb_transport_offset(skb);
3769 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
3772 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
3773 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
3775 i = tx_ring->next_to_use;
3776 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
3777 buffer_info = &tx_ring->buffer_info[i];
3779 context_desc->lower_setup.ip_fields.ipcss = ipcss;
3780 context_desc->lower_setup.ip_fields.ipcso = ipcso;
3781 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
3782 context_desc->upper_setup.tcp_fields.tucss = tucss;
3783 context_desc->upper_setup.tcp_fields.tucso = tucso;
3784 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
3785 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
3786 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
3787 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
3789 buffer_info->time_stamp = jiffies;
3790 buffer_info->next_to_watch = i;
3793 if (i == tx_ring->count)
3795 tx_ring->next_to_use = i;
3800 static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb)
3802 struct e1000_ring *tx_ring = adapter->tx_ring;
3803 struct e1000_context_desc *context_desc;
3804 struct e1000_buffer *buffer_info;
3807 u32 cmd_len = E1000_TXD_CMD_DEXT;
3810 if (skb->ip_summed != CHECKSUM_PARTIAL)
3813 if (skb->protocol == cpu_to_be16(ETH_P_8021Q))
3814 protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto;
3816 protocol = skb->protocol;
3819 case cpu_to_be16(ETH_P_IP):
3820 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
3821 cmd_len |= E1000_TXD_CMD_TCP;
3823 case cpu_to_be16(ETH_P_IPV6):
3824 /* XXX not handling all IPV6 headers */
3825 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
3826 cmd_len |= E1000_TXD_CMD_TCP;
3829 if (unlikely(net_ratelimit()))
3830 e_warn("checksum_partial proto=%x!\n",
3831 be16_to_cpu(protocol));
3835 css = skb_transport_offset(skb);
3837 i = tx_ring->next_to_use;
3838 buffer_info = &tx_ring->buffer_info[i];
3839 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
3841 context_desc->lower_setup.ip_config = 0;
3842 context_desc->upper_setup.tcp_fields.tucss = css;
3843 context_desc->upper_setup.tcp_fields.tucso =
3844 css + skb->csum_offset;
3845 context_desc->upper_setup.tcp_fields.tucse = 0;
3846 context_desc->tcp_seg_setup.data = 0;
3847 context_desc->cmd_and_length = cpu_to_le32(cmd_len);
3849 buffer_info->time_stamp = jiffies;
3850 buffer_info->next_to_watch = i;
3853 if (i == tx_ring->count)
3855 tx_ring->next_to_use = i;
3860 #define E1000_MAX_PER_TXD 8192
3861 #define E1000_MAX_TXD_PWR 12
3863 static int e1000_tx_map(struct e1000_adapter *adapter,
3864 struct sk_buff *skb, unsigned int first,
3865 unsigned int max_per_txd, unsigned int nr_frags,
3868 struct e1000_ring *tx_ring = adapter->tx_ring;
3869 struct e1000_buffer *buffer_info;
3870 unsigned int len = skb_headlen(skb);
3871 unsigned int offset, size, count = 0, i;
3875 i = tx_ring->next_to_use;
3877 if (skb_dma_map(&adapter->pdev->dev, skb, DMA_TO_DEVICE)) {
3878 dev_err(&adapter->pdev->dev, "TX DMA map failed\n");
3879 adapter->tx_dma_failed++;
3883 map = skb_shinfo(skb)->dma_maps;
3887 buffer_info = &tx_ring->buffer_info[i];
3888 size = min(len, max_per_txd);
3890 buffer_info->length = size;
3891 buffer_info->time_stamp = jiffies;
3892 buffer_info->next_to_watch = i;
3893 buffer_info->dma = skb_shinfo(skb)->dma_head + offset;
3901 if (i == tx_ring->count)
3906 for (f = 0; f < nr_frags; f++) {
3907 struct skb_frag_struct *frag;
3909 frag = &skb_shinfo(skb)->frags[f];
3915 if (i == tx_ring->count)
3918 buffer_info = &tx_ring->buffer_info[i];
3919 size = min(len, max_per_txd);
3921 buffer_info->length = size;
3922 buffer_info->time_stamp = jiffies;
3923 buffer_info->next_to_watch = i;
3924 buffer_info->dma = map[f] + offset;
3932 tx_ring->buffer_info[i].skb = skb;
3933 tx_ring->buffer_info[first].next_to_watch = i;
3938 static void e1000_tx_queue(struct e1000_adapter *adapter,
3939 int tx_flags, int count)
3941 struct e1000_ring *tx_ring = adapter->tx_ring;
3942 struct e1000_tx_desc *tx_desc = NULL;
3943 struct e1000_buffer *buffer_info;
3944 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
3947 if (tx_flags & E1000_TX_FLAGS_TSO) {
3948 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
3950 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
3952 if (tx_flags & E1000_TX_FLAGS_IPV4)
3953 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
3956 if (tx_flags & E1000_TX_FLAGS_CSUM) {
3957 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
3958 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
3961 if (tx_flags & E1000_TX_FLAGS_VLAN) {
3962 txd_lower |= E1000_TXD_CMD_VLE;
3963 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
3966 i = tx_ring->next_to_use;
3969 buffer_info = &tx_ring->buffer_info[i];
3970 tx_desc = E1000_TX_DESC(*tx_ring, i);
3971 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
3972 tx_desc->lower.data =
3973 cpu_to_le32(txd_lower | buffer_info->length);
3974 tx_desc->upper.data = cpu_to_le32(txd_upper);
3977 if (i == tx_ring->count)
3981 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
3984 * Force memory writes to complete before letting h/w
3985 * know there are new descriptors to fetch. (Only
3986 * applicable for weak-ordered memory model archs,
3991 tx_ring->next_to_use = i;
3992 writel(i, adapter->hw.hw_addr + tx_ring->tail);
3994 * we need this if more than one processor can write to our tail
3995 * at a time, it synchronizes IO on IA64/Altix systems
4000 #define MINIMUM_DHCP_PACKET_SIZE 282
4001 static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
4002 struct sk_buff *skb)
4004 struct e1000_hw *hw = &adapter->hw;
4007 if (vlan_tx_tag_present(skb)) {
4008 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id)
4009 && (adapter->hw.mng_cookie.status &
4010 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
4014 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE)
4017 if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP))
4021 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14);
4024 if (ip->protocol != IPPROTO_UDP)
4027 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
4028 if (ntohs(udp->dest) != 67)
4031 offset = (u8 *)udp + 8 - skb->data;
4032 length = skb->len - offset;
4033 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length);
4039 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
4041 struct e1000_adapter *adapter = netdev_priv(netdev);
4043 netif_stop_queue(netdev);
4045 * Herbert's original patch had:
4046 * smp_mb__after_netif_stop_queue();
4047 * but since that doesn't exist yet, just open code it.
4052 * We need to check again in a case another CPU has just
4053 * made room available.
4055 if (e1000_desc_unused(adapter->tx_ring) < size)
4059 netif_start_queue(netdev);
4060 ++adapter->restart_queue;
4064 static int e1000_maybe_stop_tx(struct net_device *netdev, int size)
4066 struct e1000_adapter *adapter = netdev_priv(netdev);
4068 if (e1000_desc_unused(adapter->tx_ring) >= size)
4070 return __e1000_maybe_stop_tx(netdev, size);
4073 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
4074 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
4075 struct net_device *netdev)
4077 struct e1000_adapter *adapter = netdev_priv(netdev);
4078 struct e1000_ring *tx_ring = adapter->tx_ring;
4080 unsigned int max_per_txd = E1000_MAX_PER_TXD;
4081 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
4082 unsigned int tx_flags = 0;
4083 unsigned int len = skb->len - skb->data_len;
4084 unsigned int nr_frags;
4090 if (test_bit(__E1000_DOWN, &adapter->state)) {
4091 dev_kfree_skb_any(skb);
4092 return NETDEV_TX_OK;
4095 if (skb->len <= 0) {
4096 dev_kfree_skb_any(skb);
4097 return NETDEV_TX_OK;
4100 mss = skb_shinfo(skb)->gso_size;
4102 * The controller does a simple calculation to
4103 * make sure there is enough room in the FIFO before
4104 * initiating the DMA for each buffer. The calc is:
4105 * 4 = ceil(buffer len/mss). To make sure we don't
4106 * overrun the FIFO, adjust the max buffer len if mss
4111 max_per_txd = min(mss << 2, max_per_txd);
4112 max_txd_pwr = fls(max_per_txd) - 1;
4115 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
4116 * points to just header, pull a few bytes of payload from
4117 * frags into skb->data
4119 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4121 * we do this workaround for ES2LAN, but it is un-necessary,
4122 * avoiding it could save a lot of cycles
4124 if (skb->data_len && (hdr_len == len)) {
4125 unsigned int pull_size;
4127 pull_size = min((unsigned int)4, skb->data_len);
4128 if (!__pskb_pull_tail(skb, pull_size)) {
4129 e_err("__pskb_pull_tail failed.\n");
4130 dev_kfree_skb_any(skb);
4131 return NETDEV_TX_OK;
4133 len = skb->len - skb->data_len;
4137 /* reserve a descriptor for the offload context */
4138 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
4142 count += TXD_USE_COUNT(len, max_txd_pwr);
4144 nr_frags = skb_shinfo(skb)->nr_frags;
4145 for (f = 0; f < nr_frags; f++)
4146 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
4149 if (adapter->hw.mac.tx_pkt_filtering)
4150 e1000_transfer_dhcp_info(adapter, skb);
4153 * need: count + 2 desc gap to keep tail from touching
4154 * head, otherwise try next time
4156 if (e1000_maybe_stop_tx(netdev, count + 2))
4157 return NETDEV_TX_BUSY;
4159 if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
4160 tx_flags |= E1000_TX_FLAGS_VLAN;
4161 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
4164 first = tx_ring->next_to_use;
4166 tso = e1000_tso(adapter, skb);
4168 dev_kfree_skb_any(skb);
4169 return NETDEV_TX_OK;
4173 tx_flags |= E1000_TX_FLAGS_TSO;
4174 else if (e1000_tx_csum(adapter, skb))
4175 tx_flags |= E1000_TX_FLAGS_CSUM;
4178 * Old method was to assume IPv4 packet by default if TSO was enabled.
4179 * 82571 hardware supports TSO capabilities for IPv6 as well...
4180 * no longer assume, we must.
4182 if (skb->protocol == htons(ETH_P_IP))
4183 tx_flags |= E1000_TX_FLAGS_IPV4;
4185 /* if count is 0 then mapping error has occured */
4186 count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss);
4188 e1000_tx_queue(adapter, tx_flags, count);
4189 /* Make sure there is space in the ring for the next send. */
4190 e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2);
4193 dev_kfree_skb_any(skb);
4194 tx_ring->buffer_info[first].time_stamp = 0;
4195 tx_ring->next_to_use = first;
4198 return NETDEV_TX_OK;
4202 * e1000_tx_timeout - Respond to a Tx Hang
4203 * @netdev: network interface device structure
4205 static void e1000_tx_timeout(struct net_device *netdev)
4207 struct e1000_adapter *adapter = netdev_priv(netdev);
4209 /* Do the reset outside of interrupt context */
4210 adapter->tx_timeout_count++;
4211 schedule_work(&adapter->reset_task);
4214 static void e1000_reset_task(struct work_struct *work)
4216 struct e1000_adapter *adapter;
4217 adapter = container_of(work, struct e1000_adapter, reset_task);
4219 e1000e_reinit_locked(adapter);
4223 * e1000_get_stats - Get System Network Statistics
4224 * @netdev: network interface device structure
4226 * Returns the address of the device statistics structure.
4227 * The statistics are actually updated from the timer callback.
4229 static struct net_device_stats *e1000_get_stats(struct net_device *netdev)
4231 /* only return the current stats */
4232 return &netdev->stats;
4236 * e1000_change_mtu - Change the Maximum Transfer Unit
4237 * @netdev: network interface device structure
4238 * @new_mtu: new value for maximum frame size
4240 * Returns 0 on success, negative on failure
4242 static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
4244 struct e1000_adapter *adapter = netdev_priv(netdev);
4245 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
4247 /* Jumbo frame support */
4248 if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) &&
4249 !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
4250 e_err("Jumbo Frames not supported.\n");
4254 /* Supported frame sizes */
4255 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) ||
4256 (max_frame > adapter->max_hw_frame_size)) {
4257 e_err("Unsupported MTU setting\n");
4261 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
4263 /* e1000e_down has a dependency on max_frame_size */
4264 adapter->max_frame_size = max_frame;
4265 if (netif_running(netdev))
4266 e1000e_down(adapter);
4269 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
4270 * means we reserve 2 more, this pushes us to allocate from the next
4272 * i.e. RXBUFFER_2048 --> size-4096 slab
4273 * However with the new *_jumbo_rx* routines, jumbo receives will use
4277 if (max_frame <= 256)
4278 adapter->rx_buffer_len = 256;
4279 else if (max_frame <= 512)
4280 adapter->rx_buffer_len = 512;
4281 else if (max_frame <= 1024)
4282 adapter->rx_buffer_len = 1024;
4283 else if (max_frame <= 2048)
4284 adapter->rx_buffer_len = 2048;
4286 adapter->rx_buffer_len = 4096;
4288 /* adjust allocation if LPE protects us, and we aren't using SBP */
4289 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
4290 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
4291 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN
4294 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu);
4295 netdev->mtu = new_mtu;
4297 if (netif_running(netdev))
4300 e1000e_reset(adapter);
4302 clear_bit(__E1000_RESETTING, &adapter->state);
4307 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
4310 struct e1000_adapter *adapter = netdev_priv(netdev);
4311 struct mii_ioctl_data *data = if_mii(ifr);
4313 if (adapter->hw.phy.media_type != e1000_media_type_copper)
4318 data->phy_id = adapter->hw.phy.addr;
4321 e1000_phy_read_status(adapter);
4323 switch (data->reg_num & 0x1F) {
4325 data->val_out = adapter->phy_regs.bmcr;
4328 data->val_out = adapter->phy_regs.bmsr;
4331 data->val_out = (adapter->hw.phy.id >> 16);
4334 data->val_out = (adapter->hw.phy.id & 0xFFFF);
4337 data->val_out = adapter->phy_regs.advertise;
4340 data->val_out = adapter->phy_regs.lpa;
4343 data->val_out = adapter->phy_regs.expansion;
4346 data->val_out = adapter->phy_regs.ctrl1000;
4349 data->val_out = adapter->phy_regs.stat1000;
4352 data->val_out = adapter->phy_regs.estatus;
4365 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
4371 return e1000_mii_ioctl(netdev, ifr, cmd);
4377 static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc)
4379 struct e1000_hw *hw = &adapter->hw;
4384 /* copy MAC RARs to PHY RARs */
4385 for (i = 0; i < adapter->hw.mac.rar_entry_count; i++) {
4386 mac_reg = er32(RAL(i));
4387 e1e_wphy(hw, BM_RAR_L(i), (u16)(mac_reg & 0xFFFF));
4388 e1e_wphy(hw, BM_RAR_M(i), (u16)((mac_reg >> 16) & 0xFFFF));
4389 mac_reg = er32(RAH(i));
4390 e1e_wphy(hw, BM_RAR_H(i), (u16)(mac_reg & 0xFFFF));
4391 e1e_wphy(hw, BM_RAR_CTRL(i), (u16)((mac_reg >> 16) & 0xFFFF));
4394 /* copy MAC MTA to PHY MTA */
4395 for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) {
4396 mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i);
4397 e1e_wphy(hw, BM_MTA(i), (u16)(mac_reg & 0xFFFF));
4398 e1e_wphy(hw, BM_MTA(i) + 1, (u16)((mac_reg >> 16) & 0xFFFF));
4401 /* configure PHY Rx Control register */
4402 e1e_rphy(&adapter->hw, BM_RCTL, &phy_reg);
4403 mac_reg = er32(RCTL);
4404 if (mac_reg & E1000_RCTL_UPE)
4405 phy_reg |= BM_RCTL_UPE;
4406 if (mac_reg & E1000_RCTL_MPE)
4407 phy_reg |= BM_RCTL_MPE;
4408 phy_reg &= ~(BM_RCTL_MO_MASK);
4409 if (mac_reg & E1000_RCTL_MO_3)
4410 phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT)
4411 << BM_RCTL_MO_SHIFT);
4412 if (mac_reg & E1000_RCTL_BAM)
4413 phy_reg |= BM_RCTL_BAM;
4414 if (mac_reg & E1000_RCTL_PMCF)
4415 phy_reg |= BM_RCTL_PMCF;
4416 mac_reg = er32(CTRL);
4417 if (mac_reg & E1000_CTRL_RFCE)
4418 phy_reg |= BM_RCTL_RFCE;
4419 e1e_wphy(&adapter->hw, BM_RCTL, phy_reg);
4421 /* enable PHY wakeup in MAC register */
4423 ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN);
4425 /* configure and enable PHY wakeup in PHY registers */
4426 e1e_wphy(&adapter->hw, BM_WUFC, wufc);
4427 e1e_wphy(&adapter->hw, BM_WUC, E1000_WUC_PME_EN);
4429 /* activate PHY wakeup */
4430 retval = hw->phy.ops.acquire(hw);
4432 e_err("Could not acquire PHY\n");
4435 e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
4436 (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT));
4437 retval = e1000e_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, &phy_reg);
4439 e_err("Could not read PHY page 769\n");
4442 phy_reg |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT;
4443 retval = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, phy_reg);
4445 e_err("Could not set PHY Host Wakeup bit\n");
4447 hw->phy.ops.release(hw);
4452 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake)
4454 struct net_device *netdev = pci_get_drvdata(pdev);
4455 struct e1000_adapter *adapter = netdev_priv(netdev);
4456 struct e1000_hw *hw = &adapter->hw;
4457 u32 ctrl, ctrl_ext, rctl, status;
4458 u32 wufc = adapter->wol;
4461 netif_device_detach(netdev);
4463 if (netif_running(netdev)) {
4464 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
4465 e1000e_down(adapter);
4466 e1000_free_irq(adapter);
4468 e1000e_reset_interrupt_capability(adapter);
4470 retval = pci_save_state(pdev);
4474 status = er32(STATUS);
4475 if (status & E1000_STATUS_LU)
4476 wufc &= ~E1000_WUFC_LNKC;
4479 e1000_setup_rctl(adapter);
4480 e1000_set_multi(netdev);
4482 /* turn on all-multi mode if wake on multicast is enabled */
4483 if (wufc & E1000_WUFC_MC) {
4485 rctl |= E1000_RCTL_MPE;
4490 /* advertise wake from D3Cold */
4491 #define E1000_CTRL_ADVD3WUC 0x00100000
4492 /* phy power management enable */
4493 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4494 ctrl |= E1000_CTRL_ADVD3WUC;
4495 if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP))
4496 ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT;
4499 if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
4500 adapter->hw.phy.media_type ==
4501 e1000_media_type_internal_serdes) {
4502 /* keep the laser running in D3 */
4503 ctrl_ext = er32(CTRL_EXT);
4504 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
4505 ew32(CTRL_EXT, ctrl_ext);
4508 if (adapter->flags & FLAG_IS_ICH)
4509 e1000e_disable_gig_wol_ich8lan(&adapter->hw);
4511 /* Allow time for pending master requests to run */
4512 e1000e_disable_pcie_master(&adapter->hw);
4514 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
4515 /* enable wakeup by the PHY */
4516 retval = e1000_init_phy_wakeup(adapter, wufc);
4520 /* enable wakeup by the MAC */
4522 ew32(WUC, E1000_WUC_PME_EN);
4529 *enable_wake = !!wufc;
4531 /* make sure adapter isn't asleep if manageability is enabled */
4532 if ((adapter->flags & FLAG_MNG_PT_ENABLED) ||
4533 (hw->mac.ops.check_mng_mode(hw)))
4534 *enable_wake = true;
4536 if (adapter->hw.phy.type == e1000_phy_igp_3)
4537 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw);
4540 * Release control of h/w to f/w. If f/w is AMT enabled, this
4541 * would have already happened in close and is redundant.
4543 e1000_release_hw_control(adapter);
4545 pci_disable_device(pdev);
4550 static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake)
4552 if (sleep && wake) {
4553 pci_prepare_to_sleep(pdev);
4557 pci_wake_from_d3(pdev, wake);
4558 pci_set_power_state(pdev, PCI_D3hot);
4561 static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep,
4564 struct net_device *netdev = pci_get_drvdata(pdev);
4565 struct e1000_adapter *adapter = netdev_priv(netdev);
4568 * The pci-e switch on some quad port adapters will report a
4569 * correctable error when the MAC transitions from D0 to D3. To
4570 * prevent this we need to mask off the correctable errors on the
4571 * downstream port of the pci-e switch.
4573 if (adapter->flags & FLAG_IS_QUAD_PORT) {
4574 struct pci_dev *us_dev = pdev->bus->self;
4575 int pos = pci_find_capability(us_dev, PCI_CAP_ID_EXP);
4578 pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl);
4579 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL,
4580 (devctl & ~PCI_EXP_DEVCTL_CERE));
4582 e1000_power_off(pdev, sleep, wake);
4584 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl);
4586 e1000_power_off(pdev, sleep, wake);
4590 static void e1000e_disable_l1aspm(struct pci_dev *pdev)
4596 * 82573 workaround - disable L1 ASPM on mobile chipsets
4598 * L1 ASPM on various mobile (ich7) chipsets do not behave properly
4599 * resulting in lost data or garbage information on the pci-e link
4600 * level. This could result in (false) bad EEPROM checksum errors,
4601 * long ping times (up to 2s) or even a system freeze/hang.
4603 * Unfortunately this feature saves about 1W power consumption when
4606 pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
4607 pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, &val);
4609 dev_warn(&pdev->dev, "Disabling L1 ASPM\n");
4611 pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, val);
4616 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
4621 retval = __e1000_shutdown(pdev, &wake);
4623 e1000_complete_shutdown(pdev, true, wake);
4628 static int e1000_resume(struct pci_dev *pdev)
4630 struct net_device *netdev = pci_get_drvdata(pdev);
4631 struct e1000_adapter *adapter = netdev_priv(netdev);
4632 struct e1000_hw *hw = &adapter->hw;
4635 pci_set_power_state(pdev, PCI_D0);
4636 pci_restore_state(pdev);
4637 e1000e_disable_l1aspm(pdev);
4639 err = pci_enable_device_mem(pdev);
4642 "Cannot enable PCI device from suspend\n");
4646 pci_set_master(pdev);
4648 pci_enable_wake(pdev, PCI_D3hot, 0);
4649 pci_enable_wake(pdev, PCI_D3cold, 0);
4651 e1000e_set_interrupt_capability(adapter);
4652 if (netif_running(netdev)) {
4653 err = e1000_request_irq(adapter);
4658 e1000e_power_up_phy(adapter);
4660 /* report the system wakeup cause from S3/S4 */
4661 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
4664 e1e_rphy(&adapter->hw, BM_WUS, &phy_data);
4666 e_info("PHY Wakeup cause - %s\n",
4667 phy_data & E1000_WUS_EX ? "Unicast Packet" :
4668 phy_data & E1000_WUS_MC ? "Multicast Packet" :
4669 phy_data & E1000_WUS_BC ? "Broadcast Packet" :
4670 phy_data & E1000_WUS_MAG ? "Magic Packet" :
4671 phy_data & E1000_WUS_LNKC ? "Link Status "
4672 " Change" : "other");
4674 e1e_wphy(&adapter->hw, BM_WUS, ~0);
4676 u32 wus = er32(WUS);
4678 e_info("MAC Wakeup cause - %s\n",
4679 wus & E1000_WUS_EX ? "Unicast Packet" :
4680 wus & E1000_WUS_MC ? "Multicast Packet" :
4681 wus & E1000_WUS_BC ? "Broadcast Packet" :
4682 wus & E1000_WUS_MAG ? "Magic Packet" :
4683 wus & E1000_WUS_LNKC ? "Link Status Change" :
4689 e1000e_reset(adapter);
4691 e1000_init_manageability(adapter);
4693 if (netif_running(netdev))
4696 netif_device_attach(netdev);
4699 * If the controller has AMT, do not set DRV_LOAD until the interface
4700 * is up. For all other cases, let the f/w know that the h/w is now
4701 * under the control of the driver.
4703 if (!(adapter->flags & FLAG_HAS_AMT))
4704 e1000_get_hw_control(adapter);
4710 static void e1000_shutdown(struct pci_dev *pdev)
4714 __e1000_shutdown(pdev, &wake);
4716 if (system_state == SYSTEM_POWER_OFF)
4717 e1000_complete_shutdown(pdev, false, wake);
4720 #ifdef CONFIG_NET_POLL_CONTROLLER
4722 * Polling 'interrupt' - used by things like netconsole to send skbs
4723 * without having to re-enable interrupts. It's not called while
4724 * the interrupt routine is executing.
4726 static void e1000_netpoll(struct net_device *netdev)
4728 struct e1000_adapter *adapter = netdev_priv(netdev);
4730 disable_irq(adapter->pdev->irq);
4731 e1000_intr(adapter->pdev->irq, netdev);
4733 enable_irq(adapter->pdev->irq);
4738 * e1000_io_error_detected - called when PCI error is detected
4739 * @pdev: Pointer to PCI device
4740 * @state: The current pci connection state
4742 * This function is called after a PCI bus error affecting
4743 * this device has been detected.
4745 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
4746 pci_channel_state_t state)
4748 struct net_device *netdev = pci_get_drvdata(pdev);
4749 struct e1000_adapter *adapter = netdev_priv(netdev);
4751 netif_device_detach(netdev);
4753 if (state == pci_channel_io_perm_failure)
4754 return PCI_ERS_RESULT_DISCONNECT;
4756 if (netif_running(netdev))
4757 e1000e_down(adapter);
4758 pci_disable_device(pdev);
4760 /* Request a slot slot reset. */
4761 return PCI_ERS_RESULT_NEED_RESET;
4765 * e1000_io_slot_reset - called after the pci bus has been reset.
4766 * @pdev: Pointer to PCI device
4768 * Restart the card from scratch, as if from a cold-boot. Implementation
4769 * resembles the first-half of the e1000_resume routine.
4771 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
4773 struct net_device *netdev = pci_get_drvdata(pdev);
4774 struct e1000_adapter *adapter = netdev_priv(netdev);
4775 struct e1000_hw *hw = &adapter->hw;
4777 pci_ers_result_t result;
4779 e1000e_disable_l1aspm(pdev);
4780 err = pci_enable_device_mem(pdev);
4783 "Cannot re-enable PCI device after reset.\n");
4784 result = PCI_ERS_RESULT_DISCONNECT;
4786 pci_set_master(pdev);
4787 pci_restore_state(pdev);
4789 pci_enable_wake(pdev, PCI_D3hot, 0);
4790 pci_enable_wake(pdev, PCI_D3cold, 0);
4792 e1000e_reset(adapter);
4794 result = PCI_ERS_RESULT_RECOVERED;
4797 pci_cleanup_aer_uncorrect_error_status(pdev);
4803 * e1000_io_resume - called when traffic can start flowing again.
4804 * @pdev: Pointer to PCI device
4806 * This callback is called when the error recovery driver tells us that
4807 * its OK to resume normal operation. Implementation resembles the
4808 * second-half of the e1000_resume routine.
4810 static void e1000_io_resume(struct pci_dev *pdev)
4812 struct net_device *netdev = pci_get_drvdata(pdev);
4813 struct e1000_adapter *adapter = netdev_priv(netdev);
4815 e1000_init_manageability(adapter);
4817 if (netif_running(netdev)) {
4818 if (e1000e_up(adapter)) {
4820 "can't bring device back up after reset\n");
4825 netif_device_attach(netdev);
4828 * If the controller has AMT, do not set DRV_LOAD until the interface
4829 * is up. For all other cases, let the f/w know that the h/w is now
4830 * under the control of the driver.
4832 if (!(adapter->flags & FLAG_HAS_AMT))
4833 e1000_get_hw_control(adapter);
4837 static void e1000_print_device_info(struct e1000_adapter *adapter)
4839 struct e1000_hw *hw = &adapter->hw;
4840 struct net_device *netdev = adapter->netdev;
4843 /* print bus type/speed/width info */
4844 e_info("(PCI Express:2.5GB/s:%s) %pM\n",
4846 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
4850 e_info("Intel(R) PRO/%s Network Connection\n",
4851 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000");
4852 e1000e_read_pba_num(hw, &pba_num);
4853 e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
4854 hw->mac.type, hw->phy.type, (pba_num >> 8), (pba_num & 0xff));
4857 static void e1000_eeprom_checks(struct e1000_adapter *adapter)
4859 struct e1000_hw *hw = &adapter->hw;
4863 if (hw->mac.type != e1000_82573)
4866 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf);
4867 if (!ret_val && (!(le16_to_cpu(buf) & (1 << 0)))) {
4868 /* Deep Smart Power Down (DSPD) */
4869 dev_warn(&adapter->pdev->dev,
4870 "Warning: detected DSPD enabled in EEPROM\n");
4873 ret_val = e1000_read_nvm(hw, NVM_INIT_3GIO_3, 1, &buf);
4874 if (!ret_val && (le16_to_cpu(buf) & (3 << 2))) {
4876 dev_warn(&adapter->pdev->dev,
4877 "Warning: detected ASPM enabled in EEPROM\n");
4881 static const struct net_device_ops e1000e_netdev_ops = {
4882 .ndo_open = e1000_open,
4883 .ndo_stop = e1000_close,
4884 .ndo_start_xmit = e1000_xmit_frame,
4885 .ndo_get_stats = e1000_get_stats,
4886 .ndo_set_multicast_list = e1000_set_multi,
4887 .ndo_set_mac_address = e1000_set_mac,
4888 .ndo_change_mtu = e1000_change_mtu,
4889 .ndo_do_ioctl = e1000_ioctl,
4890 .ndo_tx_timeout = e1000_tx_timeout,
4891 .ndo_validate_addr = eth_validate_addr,
4893 .ndo_vlan_rx_register = e1000_vlan_rx_register,
4894 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid,
4895 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid,
4896 #ifdef CONFIG_NET_POLL_CONTROLLER
4897 .ndo_poll_controller = e1000_netpoll,
4902 * e1000_probe - Device Initialization Routine
4903 * @pdev: PCI device information struct
4904 * @ent: entry in e1000_pci_tbl
4906 * Returns 0 on success, negative on failure
4908 * e1000_probe initializes an adapter identified by a pci_dev structure.
4909 * The OS initialization, configuring of the adapter private structure,
4910 * and a hardware reset occur.
4912 static int __devinit e1000_probe(struct pci_dev *pdev,
4913 const struct pci_device_id *ent)
4915 struct net_device *netdev;
4916 struct e1000_adapter *adapter;
4917 struct e1000_hw *hw;
4918 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data];
4919 resource_size_t mmio_start, mmio_len;
4920 resource_size_t flash_start, flash_len;
4922 static int cards_found;
4923 int i, err, pci_using_dac;
4924 u16 eeprom_data = 0;
4925 u16 eeprom_apme_mask = E1000_EEPROM_APME;
4927 e1000e_disable_l1aspm(pdev);
4929 err = pci_enable_device_mem(pdev);
4934 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4936 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4940 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4942 err = pci_set_consistent_dma_mask(pdev,
4945 dev_err(&pdev->dev, "No usable DMA "
4946 "configuration, aborting\n");
4952 err = pci_request_selected_regions_exclusive(pdev,
4953 pci_select_bars(pdev, IORESOURCE_MEM),
4954 e1000e_driver_name);
4958 /* AER (Advanced Error Reporting) hooks */
4959 pci_enable_pcie_error_reporting(pdev);
4961 pci_set_master(pdev);
4962 /* PCI config space info */
4963 err = pci_save_state(pdev);
4965 goto err_alloc_etherdev;
4968 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
4970 goto err_alloc_etherdev;
4972 SET_NETDEV_DEV(netdev, &pdev->dev);
4974 pci_set_drvdata(pdev, netdev);
4975 adapter = netdev_priv(netdev);
4977 adapter->netdev = netdev;
4978 adapter->pdev = pdev;
4980 adapter->pba = ei->pba;
4981 adapter->flags = ei->flags;
4982 adapter->flags2 = ei->flags2;
4983 adapter->hw.adapter = adapter;
4984 adapter->hw.mac.type = ei->mac;
4985 adapter->max_hw_frame_size = ei->max_hw_frame_size;
4986 adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1;
4988 mmio_start = pci_resource_start(pdev, 0);
4989 mmio_len = pci_resource_len(pdev, 0);
4992 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
4993 if (!adapter->hw.hw_addr)
4996 if ((adapter->flags & FLAG_HAS_FLASH) &&
4997 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
4998 flash_start = pci_resource_start(pdev, 1);
4999 flash_len = pci_resource_len(pdev, 1);
5000 adapter->hw.flash_address = ioremap(flash_start, flash_len);
5001 if (!adapter->hw.flash_address)
5005 /* construct the net_device struct */
5006 netdev->netdev_ops = &e1000e_netdev_ops;
5007 e1000e_set_ethtool_ops(netdev);
5008 netdev->watchdog_timeo = 5 * HZ;
5009 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
5010 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
5012 netdev->mem_start = mmio_start;
5013 netdev->mem_end = mmio_start + mmio_len;
5015 adapter->bd_number = cards_found++;
5017 e1000e_check_options(adapter);
5019 /* setup adapter struct */
5020 err = e1000_sw_init(adapter);
5026 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
5027 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
5028 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
5030 err = ei->get_variants(adapter);
5034 if ((adapter->flags & FLAG_IS_ICH) &&
5035 (adapter->flags & FLAG_READ_ONLY_NVM))
5036 e1000e_write_protect_nvm_ich8lan(&adapter->hw);
5038 hw->mac.ops.get_bus_info(&adapter->hw);
5040 adapter->hw.phy.autoneg_wait_to_complete = 0;
5042 /* Copper options */
5043 if (adapter->hw.phy.media_type == e1000_media_type_copper) {
5044 adapter->hw.phy.mdix = AUTO_ALL_MODES;
5045 adapter->hw.phy.disable_polarity_correction = 0;
5046 adapter->hw.phy.ms_type = e1000_ms_hw_default;
5049 if (e1000_check_reset_block(&adapter->hw))
5050 e_info("PHY reset is blocked due to SOL/IDER session.\n");
5052 netdev->features = NETIF_F_SG |
5054 NETIF_F_HW_VLAN_TX |
5057 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
5058 netdev->features |= NETIF_F_HW_VLAN_FILTER;
5060 netdev->features |= NETIF_F_TSO;
5061 netdev->features |= NETIF_F_TSO6;
5063 netdev->vlan_features |= NETIF_F_TSO;
5064 netdev->vlan_features |= NETIF_F_TSO6;
5065 netdev->vlan_features |= NETIF_F_HW_CSUM;
5066 netdev->vlan_features |= NETIF_F_SG;
5069 netdev->features |= NETIF_F_HIGHDMA;
5071 if (e1000e_enable_mng_pass_thru(&adapter->hw))
5072 adapter->flags |= FLAG_MNG_PT_ENABLED;
5075 * before reading the NVM, reset the controller to
5076 * put the device in a known good starting state
5078 adapter->hw.mac.ops.reset_hw(&adapter->hw);
5081 * systems with ASPM and others may see the checksum fail on the first
5082 * attempt. Let's give it a few tries
5085 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0)
5088 e_err("The NVM Checksum Is Not Valid\n");
5094 e1000_eeprom_checks(adapter);
5096 /* copy the MAC address out of the NVM */
5097 if (e1000e_read_mac_addr(&adapter->hw))
5098 e_err("NVM Read Error while reading MAC address\n");
5100 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
5101 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
5103 if (!is_valid_ether_addr(netdev->perm_addr)) {
5104 e_err("Invalid MAC Address: %pM\n", netdev->perm_addr);
5109 init_timer(&adapter->watchdog_timer);
5110 adapter->watchdog_timer.function = &e1000_watchdog;
5111 adapter->watchdog_timer.data = (unsigned long) adapter;
5113 init_timer(&adapter->phy_info_timer);
5114 adapter->phy_info_timer.function = &e1000_update_phy_info;
5115 adapter->phy_info_timer.data = (unsigned long) adapter;
5117 INIT_WORK(&adapter->reset_task, e1000_reset_task);
5118 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
5119 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround);
5120 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task);
5122 /* Initialize link parameters. User can change them with ethtool */
5123 adapter->hw.mac.autoneg = 1;
5124 adapter->fc_autoneg = 1;
5125 adapter->hw.fc.requested_mode = e1000_fc_default;
5126 adapter->hw.fc.current_mode = e1000_fc_default;
5127 adapter->hw.phy.autoneg_advertised = 0x2f;
5129 /* ring size defaults */
5130 adapter->rx_ring->count = 256;
5131 adapter->tx_ring->count = 256;
5134 * Initial Wake on LAN setting - If APM wake is enabled in
5135 * the EEPROM, enable the ACPI Magic Packet filter
5137 if (adapter->flags & FLAG_APME_IN_WUC) {
5138 /* APME bit in EEPROM is mapped to WUC.APME */
5139 eeprom_data = er32(WUC);
5140 eeprom_apme_mask = E1000_WUC_APME;
5141 if (eeprom_data & E1000_WUC_PHY_WAKE)
5142 adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP;
5143 } else if (adapter->flags & FLAG_APME_IN_CTRL3) {
5144 if (adapter->flags & FLAG_APME_CHECK_PORT_B &&
5145 (adapter->hw.bus.func == 1))
5146 e1000_read_nvm(&adapter->hw,
5147 NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
5149 e1000_read_nvm(&adapter->hw,
5150 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
5153 /* fetch WoL from EEPROM */
5154 if (eeprom_data & eeprom_apme_mask)
5155 adapter->eeprom_wol |= E1000_WUFC_MAG;
5158 * now that we have the eeprom settings, apply the special cases
5159 * where the eeprom may be wrong or the board simply won't support
5160 * wake on lan on a particular port
5162 if (!(adapter->flags & FLAG_HAS_WOL))
5163 adapter->eeprom_wol = 0;
5165 /* initialize the wol settings based on the eeprom settings */
5166 adapter->wol = adapter->eeprom_wol;
5167 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
5169 /* save off EEPROM version number */
5170 e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers);
5172 /* reset the hardware with the new settings */
5173 e1000e_reset(adapter);
5176 * If the controller has AMT, do not set DRV_LOAD until the interface
5177 * is up. For all other cases, let the f/w know that the h/w is now
5178 * under the control of the driver.
5180 if (!(adapter->flags & FLAG_HAS_AMT))
5181 e1000_get_hw_control(adapter);
5183 strcpy(netdev->name, "eth%d");
5184 err = register_netdev(netdev);
5188 /* carrier off reporting is important to ethtool even BEFORE open */
5189 netif_carrier_off(netdev);
5191 e1000_print_device_info(adapter);
5196 if (!(adapter->flags & FLAG_HAS_AMT))
5197 e1000_release_hw_control(adapter);
5199 if (!e1000_check_reset_block(&adapter->hw))
5200 e1000_phy_hw_reset(&adapter->hw);
5203 kfree(adapter->tx_ring);
5204 kfree(adapter->rx_ring);
5206 if (adapter->hw.flash_address)
5207 iounmap(adapter->hw.flash_address);
5208 e1000e_reset_interrupt_capability(adapter);
5210 iounmap(adapter->hw.hw_addr);
5212 free_netdev(netdev);
5214 pci_release_selected_regions(pdev,
5215 pci_select_bars(pdev, IORESOURCE_MEM));
5218 pci_disable_device(pdev);
5223 * e1000_remove - Device Removal Routine
5224 * @pdev: PCI device information struct
5226 * e1000_remove is called by the PCI subsystem to alert the driver
5227 * that it should release a PCI device. The could be caused by a
5228 * Hot-Plug event, or because the driver is going to be removed from
5231 static void __devexit e1000_remove(struct pci_dev *pdev)
5233 struct net_device *netdev = pci_get_drvdata(pdev);
5234 struct e1000_adapter *adapter = netdev_priv(netdev);
5237 * flush_scheduled work may reschedule our watchdog task, so
5238 * explicitly disable watchdog tasks from being rescheduled
5240 set_bit(__E1000_DOWN, &adapter->state);
5241 del_timer_sync(&adapter->watchdog_timer);
5242 del_timer_sync(&adapter->phy_info_timer);
5244 flush_scheduled_work();
5247 * Release control of h/w to f/w. If f/w is AMT enabled, this
5248 * would have already happened in close and is redundant.
5250 e1000_release_hw_control(adapter);
5252 unregister_netdev(netdev);
5254 if (!e1000_check_reset_block(&adapter->hw))
5255 e1000_phy_hw_reset(&adapter->hw);
5257 e1000e_reset_interrupt_capability(adapter);
5258 kfree(adapter->tx_ring);
5259 kfree(adapter->rx_ring);
5261 iounmap(adapter->hw.hw_addr);
5262 if (adapter->hw.flash_address)
5263 iounmap(adapter->hw.flash_address);
5264 pci_release_selected_regions(pdev,
5265 pci_select_bars(pdev, IORESOURCE_MEM));
5267 free_netdev(netdev);
5270 pci_disable_pcie_error_reporting(pdev);
5272 pci_disable_device(pdev);
5275 /* PCI Error Recovery (ERS) */
5276 static struct pci_error_handlers e1000_err_handler = {
5277 .error_detected = e1000_io_error_detected,
5278 .slot_reset = e1000_io_slot_reset,
5279 .resume = e1000_io_resume,
5282 static struct pci_device_id e1000_pci_tbl[] = {
5283 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 },
5284 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 },
5285 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 },
5286 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 },
5287 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 },
5288 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 },
5289 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 },
5290 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 },
5291 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 },
5293 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 },
5294 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 },
5295 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 },
5296 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 },
5298 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 },
5299 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 },
5300 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 },
5302 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 },
5303 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 },
5304 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 },
5306 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT),
5307 board_80003es2lan },
5308 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT),
5309 board_80003es2lan },
5310 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT),
5311 board_80003es2lan },
5312 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT),
5313 board_80003es2lan },
5315 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan },
5316 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan },
5317 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan },
5318 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan },
5319 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan },
5320 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan },
5321 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan },
5323 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan },
5324 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan },
5325 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan },
5326 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan },
5327 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan },
5328 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan },
5329 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan },
5330 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan },
5331 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan },
5333 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan },
5334 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan },
5335 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan },
5337 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan },
5338 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan },
5340 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan },
5341 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan },
5342 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan },
5343 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan },
5345 { } /* terminate list */
5347 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
5349 /* PCI Device API Driver */
5350 static struct pci_driver e1000_driver = {
5351 .name = e1000e_driver_name,
5352 .id_table = e1000_pci_tbl,
5353 .probe = e1000_probe,
5354 .remove = __devexit_p(e1000_remove),
5356 /* Power Management Hooks */
5357 .suspend = e1000_suspend,
5358 .resume = e1000_resume,
5360 .shutdown = e1000_shutdown,
5361 .err_handler = &e1000_err_handler
5365 * e1000_init_module - Driver Registration Routine
5367 * e1000_init_module is the first routine called when the driver is
5368 * loaded. All it does is register with the PCI subsystem.
5370 static int __init e1000_init_module(void)
5373 printk(KERN_INFO "%s: Intel(R) PRO/1000 Network Driver - %s\n",
5374 e1000e_driver_name, e1000e_driver_version);
5375 printk(KERN_INFO "%s: Copyright (c) 1999 - 2009 Intel Corporation.\n",
5376 e1000e_driver_name);
5377 ret = pci_register_driver(&e1000_driver);
5381 module_init(e1000_init_module);
5384 * e1000_exit_module - Driver Exit Cleanup Routine
5386 * e1000_exit_module is called just before the driver is removed
5389 static void __exit e1000_exit_module(void)
5391 pci_unregister_driver(&e1000_driver);
5393 module_exit(e1000_exit_module);
5396 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
5397 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
5398 MODULE_LICENSE("GPL");
5399 MODULE_VERSION(DRV_VERSION);