blob: f444eb0b76d8d9c0c7147b8dc4a9fa7266d517b9 [file] [log] [blame]
Auke Kokbc7f75f2007-09-17 12:30:59 -07001/*******************************************************************************
2
3 Intel PRO/1000 Linux driver
Bruce Allanf5e261e2012-01-01 16:00:03 +00004 Copyright(c) 1999 - 2012 Intel Corporation.
Auke Kokbc7f75f2007-09-17 12:30:59 -07005
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.
9
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
13 more details.
14
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.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
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
26
27*******************************************************************************/
28
Bruce Allan8544b9f2010-03-24 12:55:30 +000029#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
30
Auke Kokbc7f75f2007-09-17 12:30:59 -070031#include <linux/module.h>
32#include <linux/types.h>
33#include <linux/init.h>
34#include <linux/pci.h>
35#include <linux/vmalloc.h>
36#include <linux/pagemap.h>
37#include <linux/delay.h>
38#include <linux/netdevice.h>
Bruce Allan9fb7a5f2011-07-29 05:52:51 +000039#include <linux/interrupt.h>
Auke Kokbc7f75f2007-09-17 12:30:59 -070040#include <linux/tcp.h>
41#include <linux/ipv6.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090042#include <linux/slab.h>
Auke Kokbc7f75f2007-09-17 12:30:59 -070043#include <net/checksum.h>
44#include <net/ip6_checksum.h>
45#include <linux/mii.h>
46#include <linux/ethtool.h>
47#include <linux/if_vlan.h>
48#include <linux/cpu.h>
49#include <linux/smp.h>
Linus Torvalds7e0bb712011-10-25 15:18:39 +020050#include <linux/pm_qos.h>
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +000051#include <linux/pm_runtime.h>
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +000052#include <linux/aer.h>
Paul Gortmaker70c71602011-05-22 16:47:17 -040053#include <linux/prefetch.h>
Auke Kokbc7f75f2007-09-17 12:30:59 -070054
55#include "e1000.h"
56
Bruce Allanb3ccf262011-05-19 01:53:41 +000057#define DRV_EXTRAVERSION "-k"
Bruce Allanc14c6432010-06-16 13:28:34 +000058
Bruce Allan076d8072012-08-17 06:18:23 +000059#define DRV_VERSION "2.1.4" DRV_EXTRAVERSION
Auke Kokbc7f75f2007-09-17 12:30:59 -070060char e1000e_driver_name[] = "e1000e";
61const char e1000e_driver_version[] = DRV_VERSION;
62
stephen hemmingerb3f4d592012-03-13 06:04:20 +000063#define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
64static int debug = -1;
65module_param(debug, int, 0);
66MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
67
Bruce Allan78cd29d2011-03-24 03:09:03 +000068static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state);
69
Auke Kokbc7f75f2007-09-17 12:30:59 -070070static const struct e1000_info *e1000_info_tbl[] = {
71 [board_82571] = &e1000_82571_info,
72 [board_82572] = &e1000_82572_info,
73 [board_82573] = &e1000_82573_info,
Bruce Allan4662e822008-08-26 18:37:06 -070074 [board_82574] = &e1000_82574_info,
Alexander Duyck8c81c9c2009-03-19 01:12:27 +000075 [board_82583] = &e1000_82583_info,
Auke Kokbc7f75f2007-09-17 12:30:59 -070076 [board_80003es2lan] = &e1000_es2_info,
77 [board_ich8lan] = &e1000_ich8_info,
78 [board_ich9lan] = &e1000_ich9_info,
Bruce Allanf4187b52008-08-26 18:36:50 -070079 [board_ich10lan] = &e1000_ich10_info,
Bruce Allana4f58f52009-06-02 11:29:18 +000080 [board_pchlan] = &e1000_pch_info,
Bruce Alland3738bb2010-06-16 13:27:28 +000081 [board_pch2lan] = &e1000_pch2_info,
Bruce Allan2fbe4522012-04-19 03:21:47 +000082 [board_pch_lpt] = &e1000_pch_lpt_info,
Auke Kokbc7f75f2007-09-17 12:30:59 -070083};
84
Taku Izumi84f4ee92010-04-27 14:39:08 +000085struct e1000_reg_info {
86 u32 ofs;
87 char *name;
88};
89
Bruce Allanaf667a22010-12-31 06:10:01 +000090#define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */
91#define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */
92#define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */
93#define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */
94#define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */
Taku Izumi84f4ee92010-04-27 14:39:08 +000095
Bruce Allanaf667a22010-12-31 06:10:01 +000096#define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */
97#define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */
98#define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */
99#define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */
100#define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */
Taku Izumi84f4ee92010-04-27 14:39:08 +0000101
102static const struct e1000_reg_info e1000_reg_info_tbl[] = {
103
104 /* General Registers */
105 {E1000_CTRL, "CTRL"},
106 {E1000_STATUS, "STATUS"},
107 {E1000_CTRL_EXT, "CTRL_EXT"},
108
109 /* Interrupt Registers */
110 {E1000_ICR, "ICR"},
111
Bruce Allanaf667a22010-12-31 06:10:01 +0000112 /* Rx Registers */
Taku Izumi84f4ee92010-04-27 14:39:08 +0000113 {E1000_RCTL, "RCTL"},
Bruce Allan1e360522012-03-20 03:48:13 +0000114 {E1000_RDLEN(0), "RDLEN"},
115 {E1000_RDH(0), "RDH"},
116 {E1000_RDT(0), "RDT"},
Taku Izumi84f4ee92010-04-27 14:39:08 +0000117 {E1000_RDTR, "RDTR"},
118 {E1000_RXDCTL(0), "RXDCTL"},
119 {E1000_ERT, "ERT"},
Bruce Allan1e360522012-03-20 03:48:13 +0000120 {E1000_RDBAL(0), "RDBAL"},
121 {E1000_RDBAH(0), "RDBAH"},
Taku Izumi84f4ee92010-04-27 14:39:08 +0000122 {E1000_RDFH, "RDFH"},
123 {E1000_RDFT, "RDFT"},
124 {E1000_RDFHS, "RDFHS"},
125 {E1000_RDFTS, "RDFTS"},
126 {E1000_RDFPC, "RDFPC"},
127
Bruce Allanaf667a22010-12-31 06:10:01 +0000128 /* Tx Registers */
Taku Izumi84f4ee92010-04-27 14:39:08 +0000129 {E1000_TCTL, "TCTL"},
Bruce Allan1e360522012-03-20 03:48:13 +0000130 {E1000_TDBAL(0), "TDBAL"},
131 {E1000_TDBAH(0), "TDBAH"},
132 {E1000_TDLEN(0), "TDLEN"},
133 {E1000_TDH(0), "TDH"},
134 {E1000_TDT(0), "TDT"},
Taku Izumi84f4ee92010-04-27 14:39:08 +0000135 {E1000_TIDV, "TIDV"},
136 {E1000_TXDCTL(0), "TXDCTL"},
137 {E1000_TADV, "TADV"},
138 {E1000_TARC(0), "TARC"},
139 {E1000_TDFH, "TDFH"},
140 {E1000_TDFT, "TDFT"},
141 {E1000_TDFHS, "TDFHS"},
142 {E1000_TDFTS, "TDFTS"},
143 {E1000_TDFPC, "TDFPC"},
144
145 /* List Terminator */
Bruce Allanf36bb6c2012-01-31 06:38:04 +0000146 {0, NULL}
Taku Izumi84f4ee92010-04-27 14:39:08 +0000147};
148
149/*
150 * e1000_regdump - register printout routine
151 */
152static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo)
153{
154 int n = 0;
155 char rname[16];
156 u32 regs[8];
157
158 switch (reginfo->ofs) {
159 case E1000_RXDCTL(0):
160 for (n = 0; n < 2; n++)
161 regs[n] = __er32(hw, E1000_RXDCTL(n));
162 break;
163 case E1000_TXDCTL(0):
164 for (n = 0; n < 2; n++)
165 regs[n] = __er32(hw, E1000_TXDCTL(n));
166 break;
167 case E1000_TARC(0):
168 for (n = 0; n < 2; n++)
169 regs[n] = __er32(hw, E1000_TARC(n));
170 break;
171 default:
Jeff Kirsheref456f82011-11-03 11:40:28 +0000172 pr_info("%-15s %08x\n",
173 reginfo->name, __er32(hw, reginfo->ofs));
Taku Izumi84f4ee92010-04-27 14:39:08 +0000174 return;
175 }
176
177 snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]");
Jeff Kirsheref456f82011-11-03 11:40:28 +0000178 pr_info("%-15s %08x %08x\n", rname, regs[0], regs[1]);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000179}
180
Emil Tantilovf0c5dad2012-08-01 08:12:21 +0000181static void e1000e_dump_ps_pages(struct e1000_adapter *adapter,
182 struct e1000_buffer *bi)
183{
184 int i;
185 struct e1000_ps_page *ps_page;
186
187 for (i = 0; i < adapter->rx_ps_pages; i++) {
188 ps_page = &bi->ps_pages[i];
189
190 if (ps_page->page) {
191 pr_info("packet dump for ps_page %d:\n", i);
192 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS,
193 16, 1, page_address(ps_page->page),
194 PAGE_SIZE, true);
195 }
196 }
197}
198
Taku Izumi84f4ee92010-04-27 14:39:08 +0000199/*
Bruce Allanaf667a22010-12-31 06:10:01 +0000200 * e1000e_dump - Print registers, Tx-ring and Rx-ring
Taku Izumi84f4ee92010-04-27 14:39:08 +0000201 */
202static void e1000e_dump(struct e1000_adapter *adapter)
203{
204 struct net_device *netdev = adapter->netdev;
205 struct e1000_hw *hw = &adapter->hw;
206 struct e1000_reg_info *reginfo;
207 struct e1000_ring *tx_ring = adapter->tx_ring;
208 struct e1000_tx_desc *tx_desc;
Bruce Allanaf667a22010-12-31 06:10:01 +0000209 struct my_u0 {
Bruce Allane885d762012-01-31 06:37:32 +0000210 __le64 a;
211 __le64 b;
Bruce Allanaf667a22010-12-31 06:10:01 +0000212 } *u0;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000213 struct e1000_buffer *buffer_info;
214 struct e1000_ring *rx_ring = adapter->rx_ring;
215 union e1000_rx_desc_packet_split *rx_desc_ps;
Bruce Allan5f450212011-07-22 06:21:46 +0000216 union e1000_rx_desc_extended *rx_desc;
Bruce Allanaf667a22010-12-31 06:10:01 +0000217 struct my_u1 {
Bruce Allane885d762012-01-31 06:37:32 +0000218 __le64 a;
219 __le64 b;
220 __le64 c;
221 __le64 d;
Bruce Allanaf667a22010-12-31 06:10:01 +0000222 } *u1;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000223 u32 staterr;
224 int i = 0;
225
226 if (!netif_msg_hw(adapter))
227 return;
228
229 /* Print netdevice Info */
230 if (netdev) {
231 dev_info(&adapter->pdev->dev, "Net device Info\n");
Jeff Kirsheref456f82011-11-03 11:40:28 +0000232 pr_info("Device Name state trans_start last_rx\n");
233 pr_info("%-15s %016lX %016lX %016lX\n",
234 netdev->name, netdev->state, netdev->trans_start,
235 netdev->last_rx);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000236 }
237
238 /* Print Registers */
239 dev_info(&adapter->pdev->dev, "Register Dump\n");
Jeff Kirsheref456f82011-11-03 11:40:28 +0000240 pr_info(" Register Name Value\n");
Taku Izumi84f4ee92010-04-27 14:39:08 +0000241 for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl;
242 reginfo->name; reginfo++) {
243 e1000_regdump(hw, reginfo);
244 }
245
Bruce Allanaf667a22010-12-31 06:10:01 +0000246 /* Print Tx Ring Summary */
Taku Izumi84f4ee92010-04-27 14:39:08 +0000247 if (!netdev || !netif_running(netdev))
Bruce Allanfe1e9802012-01-31 06:37:54 +0000248 return;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000249
Bruce Allanaf667a22010-12-31 06:10:01 +0000250 dev_info(&adapter->pdev->dev, "Tx Ring Summary\n");
Jeff Kirsheref456f82011-11-03 11:40:28 +0000251 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
Taku Izumi84f4ee92010-04-27 14:39:08 +0000252 buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean];
Jeff Kirsheref456f82011-11-03 11:40:28 +0000253 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n",
254 0, tx_ring->next_to_use, tx_ring->next_to_clean,
255 (unsigned long long)buffer_info->dma,
256 buffer_info->length,
257 buffer_info->next_to_watch,
258 (unsigned long long)buffer_info->time_stamp);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000259
Bruce Allanaf667a22010-12-31 06:10:01 +0000260 /* Print Tx Ring */
Taku Izumi84f4ee92010-04-27 14:39:08 +0000261 if (!netif_msg_tx_done(adapter))
262 goto rx_ring_summary;
263
Bruce Allanaf667a22010-12-31 06:10:01 +0000264 dev_info(&adapter->pdev->dev, "Tx Ring Dump\n");
Taku Izumi84f4ee92010-04-27 14:39:08 +0000265
266 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
267 *
268 * Legacy Transmit Descriptor
269 * +--------------------------------------------------------------+
270 * 0 | Buffer Address [63:0] (Reserved on Write Back) |
271 * +--------------------------------------------------------------+
272 * 8 | Special | CSS | Status | CMD | CSO | Length |
273 * +--------------------------------------------------------------+
274 * 63 48 47 36 35 32 31 24 23 16 15 0
275 *
276 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
277 * 63 48 47 40 39 32 31 16 15 8 7 0
278 * +----------------------------------------------------------------+
279 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
280 * +----------------------------------------------------------------+
281 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
282 * +----------------------------------------------------------------+
283 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
284 *
285 * Extended Data Descriptor (DTYP=0x1)
286 * +----------------------------------------------------------------+
287 * 0 | Buffer Address [63:0] |
288 * +----------------------------------------------------------------+
289 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
290 * +----------------------------------------------------------------+
291 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
292 */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000293 pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n");
294 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n");
295 pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Data format\n");
Taku Izumi84f4ee92010-04-27 14:39:08 +0000296 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
Jeff Kirsheref456f82011-11-03 11:40:28 +0000297 const char *next_desc;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000298 tx_desc = E1000_TX_DESC(*tx_ring, i);
299 buffer_info = &tx_ring->buffer_info[i];
300 u0 = (struct my_u0 *)tx_desc;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000301 if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean)
Jeff Kirsheref456f82011-11-03 11:40:28 +0000302 next_desc = " NTC/U";
Taku Izumi84f4ee92010-04-27 14:39:08 +0000303 else if (i == tx_ring->next_to_use)
Jeff Kirsheref456f82011-11-03 11:40:28 +0000304 next_desc = " NTU";
Taku Izumi84f4ee92010-04-27 14:39:08 +0000305 else if (i == tx_ring->next_to_clean)
Jeff Kirsheref456f82011-11-03 11:40:28 +0000306 next_desc = " NTC";
Taku Izumi84f4ee92010-04-27 14:39:08 +0000307 else
Jeff Kirsheref456f82011-11-03 11:40:28 +0000308 next_desc = "";
309 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n",
310 (!(le64_to_cpu(u0->b) & (1 << 29)) ? 'l' :
311 ((le64_to_cpu(u0->b) & (1 << 20)) ? 'd' : 'c')),
312 i,
313 (unsigned long long)le64_to_cpu(u0->a),
314 (unsigned long long)le64_to_cpu(u0->b),
315 (unsigned long long)buffer_info->dma,
316 buffer_info->length, buffer_info->next_to_watch,
317 (unsigned long long)buffer_info->time_stamp,
318 buffer_info->skb, next_desc);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000319
Emil Tantilovf0c5dad2012-08-01 08:12:21 +0000320 if (netif_msg_pktdata(adapter) && buffer_info->skb)
Taku Izumi84f4ee92010-04-27 14:39:08 +0000321 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS,
Emil Tantilovf0c5dad2012-08-01 08:12:21 +0000322 16, 1, buffer_info->skb->data,
323 buffer_info->skb->len, true);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000324 }
325
Bruce Allanaf667a22010-12-31 06:10:01 +0000326 /* Print Rx Ring Summary */
Taku Izumi84f4ee92010-04-27 14:39:08 +0000327rx_ring_summary:
Bruce Allanaf667a22010-12-31 06:10:01 +0000328 dev_info(&adapter->pdev->dev, "Rx Ring Summary\n");
Jeff Kirsheref456f82011-11-03 11:40:28 +0000329 pr_info("Queue [NTU] [NTC]\n");
330 pr_info(" %5d %5X %5X\n",
331 0, rx_ring->next_to_use, rx_ring->next_to_clean);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000332
Bruce Allanaf667a22010-12-31 06:10:01 +0000333 /* Print Rx Ring */
Taku Izumi84f4ee92010-04-27 14:39:08 +0000334 if (!netif_msg_rx_status(adapter))
Bruce Allanfe1e9802012-01-31 06:37:54 +0000335 return;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000336
Bruce Allanaf667a22010-12-31 06:10:01 +0000337 dev_info(&adapter->pdev->dev, "Rx Ring Dump\n");
Taku Izumi84f4ee92010-04-27 14:39:08 +0000338 switch (adapter->rx_ps_pages) {
339 case 1:
340 case 2:
341 case 3:
342 /* [Extended] Packet Split Receive Descriptor Format
343 *
344 * +-----------------------------------------------------+
345 * 0 | Buffer Address 0 [63:0] |
346 * +-----------------------------------------------------+
347 * 8 | Buffer Address 1 [63:0] |
348 * +-----------------------------------------------------+
349 * 16 | Buffer Address 2 [63:0] |
350 * +-----------------------------------------------------+
351 * 24 | Buffer Address 3 [63:0] |
352 * +-----------------------------------------------------+
353 */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000354 pr_info("R [desc] [buffer 0 63:0 ] [buffer 1 63:0 ] [buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] [bi->skb] <-- Ext Pkt Split format\n");
Taku Izumi84f4ee92010-04-27 14:39:08 +0000355 /* [Extended] Receive Descriptor (Write-Back) Format
356 *
357 * 63 48 47 32 31 13 12 8 7 4 3 0
358 * +------------------------------------------------------+
359 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
360 * | Checksum | Ident | | Queue | | Type |
361 * +------------------------------------------------------+
362 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
363 * +------------------------------------------------------+
364 * 63 48 47 32 31 20 19 0
365 */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000366 pr_info("RWB[desc] [ck ipid mrqhsh] [vl l0 ee es] [ l3 l2 l1 hs] [reserved ] ---------------- [bi->skb] <-- Ext Rx Write-Back format\n");
Taku Izumi84f4ee92010-04-27 14:39:08 +0000367 for (i = 0; i < rx_ring->count; i++) {
Jeff Kirsheref456f82011-11-03 11:40:28 +0000368 const char *next_desc;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000369 buffer_info = &rx_ring->buffer_info[i];
370 rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i);
371 u1 = (struct my_u1 *)rx_desc_ps;
372 staterr =
Bruce Allanaf667a22010-12-31 06:10:01 +0000373 le32_to_cpu(rx_desc_ps->wb.middle.status_error);
Jeff Kirsheref456f82011-11-03 11:40:28 +0000374
375 if (i == rx_ring->next_to_use)
376 next_desc = " NTU";
377 else if (i == rx_ring->next_to_clean)
378 next_desc = " NTC";
379 else
380 next_desc = "";
381
Taku Izumi84f4ee92010-04-27 14:39:08 +0000382 if (staterr & E1000_RXD_STAT_DD) {
383 /* Descriptor Done */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000384 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n",
385 "RWB", i,
386 (unsigned long long)le64_to_cpu(u1->a),
387 (unsigned long long)le64_to_cpu(u1->b),
388 (unsigned long long)le64_to_cpu(u1->c),
389 (unsigned long long)le64_to_cpu(u1->d),
390 buffer_info->skb, next_desc);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000391 } else {
Jeff Kirsheref456f82011-11-03 11:40:28 +0000392 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n",
393 "R ", i,
394 (unsigned long long)le64_to_cpu(u1->a),
395 (unsigned long long)le64_to_cpu(u1->b),
396 (unsigned long long)le64_to_cpu(u1->c),
397 (unsigned long long)le64_to_cpu(u1->d),
398 (unsigned long long)buffer_info->dma,
399 buffer_info->skb, next_desc);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000400
401 if (netif_msg_pktdata(adapter))
Emil Tantilovf0c5dad2012-08-01 08:12:21 +0000402 e1000e_dump_ps_pages(adapter,
403 buffer_info);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000404 }
Taku Izumi84f4ee92010-04-27 14:39:08 +0000405 }
406 break;
407 default:
408 case 0:
Bruce Allan5f450212011-07-22 06:21:46 +0000409 /* Extended Receive Descriptor (Read) Format
Taku Izumi84f4ee92010-04-27 14:39:08 +0000410 *
Bruce Allan5f450212011-07-22 06:21:46 +0000411 * +-----------------------------------------------------+
412 * 0 | Buffer Address [63:0] |
413 * +-----------------------------------------------------+
414 * 8 | Reserved |
415 * +-----------------------------------------------------+
Taku Izumi84f4ee92010-04-27 14:39:08 +0000416 */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000417 pr_info("R [desc] [buf addr 63:0 ] [reserved 63:0 ] [bi->dma ] [bi->skb] <-- Ext (Read) format\n");
Bruce Allan5f450212011-07-22 06:21:46 +0000418 /* Extended Receive Descriptor (Write-Back) Format
419 *
420 * 63 48 47 32 31 24 23 4 3 0
421 * +------------------------------------------------------+
422 * | RSS Hash | | | |
423 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS |
424 * | Packet | IP | | | Type |
425 * | Checksum | Ident | | | |
426 * +------------------------------------------------------+
427 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
428 * +------------------------------------------------------+
429 * 63 48 47 32 31 20 19 0
430 */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000431 pr_info("RWB[desc] [cs ipid mrq] [vt ln xe xs] [bi->skb] <-- Ext (Write-Back) format\n");
Bruce Allan5f450212011-07-22 06:21:46 +0000432
433 for (i = 0; i < rx_ring->count; i++) {
Jeff Kirsheref456f82011-11-03 11:40:28 +0000434 const char *next_desc;
435
Taku Izumi84f4ee92010-04-27 14:39:08 +0000436 buffer_info = &rx_ring->buffer_info[i];
Bruce Allan5f450212011-07-22 06:21:46 +0000437 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
438 u1 = (struct my_u1 *)rx_desc;
439 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Jeff Kirsheref456f82011-11-03 11:40:28 +0000440
441 if (i == rx_ring->next_to_use)
442 next_desc = " NTU";
443 else if (i == rx_ring->next_to_clean)
444 next_desc = " NTC";
445 else
446 next_desc = "";
447
Bruce Allan5f450212011-07-22 06:21:46 +0000448 if (staterr & E1000_RXD_STAT_DD) {
449 /* Descriptor Done */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000450 pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n",
451 "RWB", i,
452 (unsigned long long)le64_to_cpu(u1->a),
453 (unsigned long long)le64_to_cpu(u1->b),
454 buffer_info->skb, next_desc);
Bruce Allan5f450212011-07-22 06:21:46 +0000455 } else {
Jeff Kirsheref456f82011-11-03 11:40:28 +0000456 pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n",
457 "R ", i,
458 (unsigned long long)le64_to_cpu(u1->a),
459 (unsigned long long)le64_to_cpu(u1->b),
460 (unsigned long long)buffer_info->dma,
461 buffer_info->skb, next_desc);
Bruce Allan5f450212011-07-22 06:21:46 +0000462
Emil Tantilovf0c5dad2012-08-01 08:12:21 +0000463 if (netif_msg_pktdata(adapter) &&
464 buffer_info->skb)
Bruce Allan5f450212011-07-22 06:21:46 +0000465 print_hex_dump(KERN_INFO, "",
466 DUMP_PREFIX_ADDRESS, 16,
467 1,
Emil Tantilovf0c5dad2012-08-01 08:12:21 +0000468 buffer_info->skb->data,
Bruce Allan5f450212011-07-22 06:21:46 +0000469 adapter->rx_buffer_len,
470 true);
471 }
Taku Izumi84f4ee92010-04-27 14:39:08 +0000472 }
473 }
Taku Izumi84f4ee92010-04-27 14:39:08 +0000474}
475
Auke Kokbc7f75f2007-09-17 12:30:59 -0700476/**
477 * e1000_desc_unused - calculate if we have unused descriptors
478 **/
479static int e1000_desc_unused(struct e1000_ring *ring)
480{
481 if (ring->next_to_clean > ring->next_to_use)
482 return ring->next_to_clean - ring->next_to_use - 1;
483
484 return ring->count + ring->next_to_clean - ring->next_to_use - 1;
485}
486
487/**
Bruce Allanad680762008-03-28 09:15:03 -0700488 * e1000_receive_skb - helper function to handle Rx indications
Auke Kokbc7f75f2007-09-17 12:30:59 -0700489 * @adapter: board private structure
490 * @status: descriptor status field as written by hardware
491 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
492 * @skb: pointer to sk_buff to be indicated to stack
493 **/
494static void e1000_receive_skb(struct e1000_adapter *adapter,
Bruce Allanaf667a22010-12-31 06:10:01 +0000495 struct net_device *netdev, struct sk_buff *skb,
Al Viroa39fe742007-12-11 19:50:34 +0000496 u8 status, __le16 vlan)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700497{
Jeff Kirsher86d70e52011-03-25 16:01:01 +0000498 u16 tag = le16_to_cpu(vlan);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700499 skb->protocol = eth_type_trans(skb, netdev);
500
Jeff Kirsher86d70e52011-03-25 16:01:01 +0000501 if (status & E1000_RXD_STAT_VP)
502 __vlan_hwaccel_put_tag(skb, tag);
503
504 napi_gro_receive(&adapter->napi, skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700505}
506
507/**
Bruce Allanaf667a22010-12-31 06:10:01 +0000508 * e1000_rx_checksum - Receive Checksum Offload
Bruce Allanafd12932012-01-05 00:34:05 +0000509 * @adapter: board private structure
510 * @status_err: receive descriptor status and error fields
511 * @csum: receive descriptor csum field
512 * @sk_buff: socket buffer with received data
Auke Kokbc7f75f2007-09-17 12:30:59 -0700513 **/
514static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
Bruce Allan2e1706f2012-06-30 20:02:42 +0000515 struct sk_buff *skb)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700516{
517 u16 status = (u16)status_err;
518 u8 errors = (u8)(status_err >> 24);
Eric Dumazetbc8acf22010-09-02 13:07:41 -0700519
520 skb_checksum_none_assert(skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700521
Bruce Allanafd12932012-01-05 00:34:05 +0000522 /* Rx checksum disabled */
523 if (!(adapter->netdev->features & NETIF_F_RXCSUM))
524 return;
525
Auke Kokbc7f75f2007-09-17 12:30:59 -0700526 /* Ignore Checksum bit is set */
527 if (status & E1000_RXD_STAT_IXSM)
528 return;
Bruce Allanafd12932012-01-05 00:34:05 +0000529
Bruce Allan2e1706f2012-06-30 20:02:42 +0000530 /* TCP/UDP checksum error bit or IP checksum error bit is set */
531 if (errors & (E1000_RXD_ERR_TCPE | E1000_RXD_ERR_IPE)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700532 /* let the stack verify checksum errors */
533 adapter->hw_csum_err++;
534 return;
535 }
536
537 /* TCP/UDP Checksum has not been calculated */
538 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
539 return;
540
541 /* It must be a TCP or UDP packet with a valid checksum */
Bruce Allan2e1706f2012-06-30 20:02:42 +0000542 skb->ip_summed = CHECKSUM_UNNECESSARY;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700543 adapter->hw_csum_good++;
544}
545
Bruce Allan55aa6982011-12-16 00:45:45 +0000546static void e1000e_update_rdt_wa(struct e1000_ring *rx_ring, unsigned int i)
David S. Miller823dcd22011-08-20 10:39:12 -0700547{
Bruce Allan55aa6982011-12-16 00:45:45 +0000548 struct e1000_adapter *adapter = rx_ring->adapter;
David S. Miller823dcd22011-08-20 10:39:12 -0700549 struct e1000_hw *hw = &adapter->hw;
Bruce Allanbdc125f2012-03-20 03:47:52 +0000550 s32 ret_val = __ew32_prepare(hw);
David S. Miller823dcd22011-08-20 10:39:12 -0700551
Bruce Allanbdc125f2012-03-20 03:47:52 +0000552 writel(i, rx_ring->tail);
553
554 if (unlikely(!ret_val && (i != readl(rx_ring->tail)))) {
David S. Miller823dcd22011-08-20 10:39:12 -0700555 u32 rctl = er32(RCTL);
556 ew32(RCTL, rctl & ~E1000_RCTL_EN);
557 e_err("ME firmware caused invalid RDT - resetting\n");
558 schedule_work(&adapter->reset_task);
559 }
560}
561
Bruce Allan55aa6982011-12-16 00:45:45 +0000562static void e1000e_update_tdt_wa(struct e1000_ring *tx_ring, unsigned int i)
David S. Miller823dcd22011-08-20 10:39:12 -0700563{
Bruce Allan55aa6982011-12-16 00:45:45 +0000564 struct e1000_adapter *adapter = tx_ring->adapter;
David S. Miller823dcd22011-08-20 10:39:12 -0700565 struct e1000_hw *hw = &adapter->hw;
Bruce Allanbdc125f2012-03-20 03:47:52 +0000566 s32 ret_val = __ew32_prepare(hw);
David S. Miller823dcd22011-08-20 10:39:12 -0700567
Bruce Allanbdc125f2012-03-20 03:47:52 +0000568 writel(i, tx_ring->tail);
569
570 if (unlikely(!ret_val && (i != readl(tx_ring->tail)))) {
David S. Miller823dcd22011-08-20 10:39:12 -0700571 u32 tctl = er32(TCTL);
572 ew32(TCTL, tctl & ~E1000_TCTL_EN);
573 e_err("ME firmware caused invalid TDT - resetting\n");
574 schedule_work(&adapter->reset_task);
575 }
576}
577
578/**
Bruce Allan5f450212011-07-22 06:21:46 +0000579 * e1000_alloc_rx_buffers - Replace used receive buffers
Bruce Allan55aa6982011-12-16 00:45:45 +0000580 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -0700581 **/
Bruce Allan55aa6982011-12-16 00:45:45 +0000582static void e1000_alloc_rx_buffers(struct e1000_ring *rx_ring,
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000583 int cleaned_count, gfp_t gfp)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700584{
Bruce Allan55aa6982011-12-16 00:45:45 +0000585 struct e1000_adapter *adapter = rx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700586 struct net_device *netdev = adapter->netdev;
587 struct pci_dev *pdev = adapter->pdev;
Bruce Allan5f450212011-07-22 06:21:46 +0000588 union e1000_rx_desc_extended *rx_desc;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700589 struct e1000_buffer *buffer_info;
590 struct sk_buff *skb;
591 unsigned int i;
Eric Dumazet89d71a62009-10-13 05:34:20 +0000592 unsigned int bufsz = adapter->rx_buffer_len;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700593
594 i = rx_ring->next_to_use;
595 buffer_info = &rx_ring->buffer_info[i];
596
597 while (cleaned_count--) {
598 skb = buffer_info->skb;
599 if (skb) {
600 skb_trim(skb, 0);
601 goto map_skb;
602 }
603
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000604 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700605 if (!skb) {
606 /* Better luck next round */
607 adapter->alloc_rx_buff_failed++;
608 break;
609 }
610
Auke Kokbc7f75f2007-09-17 12:30:59 -0700611 buffer_info->skb = skb;
612map_skb:
Nick Nunley0be3f552010-04-27 13:09:05 +0000613 buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
Auke Kokbc7f75f2007-09-17 12:30:59 -0700614 adapter->rx_buffer_len,
Nick Nunley0be3f552010-04-27 13:09:05 +0000615 DMA_FROM_DEVICE);
616 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
Bruce Allanaf667a22010-12-31 06:10:01 +0000617 dev_err(&pdev->dev, "Rx DMA map failed\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -0700618 adapter->rx_dma_failed++;
619 break;
620 }
621
Bruce Allan5f450212011-07-22 06:21:46 +0000622 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
623 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700624
Tom Herbert50849d72010-05-05 14:02:49 +0000625 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
626 /*
627 * Force memory writes to complete before letting h/w
628 * know there are new descriptors to fetch. (Only
629 * applicable for weak-ordered memory model archs,
630 * such as IA-64).
631 */
632 wmb();
David S. Miller823dcd22011-08-20 10:39:12 -0700633 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
Bruce Allan55aa6982011-12-16 00:45:45 +0000634 e1000e_update_rdt_wa(rx_ring, i);
David S. Miller823dcd22011-08-20 10:39:12 -0700635 else
Bruce Allanc5083cf2011-12-16 00:45:40 +0000636 writel(i, rx_ring->tail);
Tom Herbert50849d72010-05-05 14:02:49 +0000637 }
Auke Kokbc7f75f2007-09-17 12:30:59 -0700638 i++;
639 if (i == rx_ring->count)
640 i = 0;
641 buffer_info = &rx_ring->buffer_info[i];
642 }
643
Tom Herbert50849d72010-05-05 14:02:49 +0000644 rx_ring->next_to_use = i;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700645}
646
647/**
648 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
Bruce Allan55aa6982011-12-16 00:45:45 +0000649 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -0700650 **/
Bruce Allan55aa6982011-12-16 00:45:45 +0000651static void e1000_alloc_rx_buffers_ps(struct e1000_ring *rx_ring,
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000652 int cleaned_count, gfp_t gfp)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700653{
Bruce Allan55aa6982011-12-16 00:45:45 +0000654 struct e1000_adapter *adapter = rx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700655 struct net_device *netdev = adapter->netdev;
656 struct pci_dev *pdev = adapter->pdev;
657 union e1000_rx_desc_packet_split *rx_desc;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700658 struct e1000_buffer *buffer_info;
659 struct e1000_ps_page *ps_page;
660 struct sk_buff *skb;
661 unsigned int i, j;
662
663 i = rx_ring->next_to_use;
664 buffer_info = &rx_ring->buffer_info[i];
665
666 while (cleaned_count--) {
667 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
668
669 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
Auke Kok47f44e42007-10-25 13:57:44 -0700670 ps_page = &buffer_info->ps_pages[j];
671 if (j >= adapter->rx_ps_pages) {
672 /* all unused desc entries get hw null ptr */
Bruce Allanaf667a22010-12-31 06:10:01 +0000673 rx_desc->read.buffer_addr[j + 1] =
674 ~cpu_to_le64(0);
Auke Kok47f44e42007-10-25 13:57:44 -0700675 continue;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700676 }
Auke Kok47f44e42007-10-25 13:57:44 -0700677 if (!ps_page->page) {
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000678 ps_page->page = alloc_page(gfp);
Auke Kok47f44e42007-10-25 13:57:44 -0700679 if (!ps_page->page) {
680 adapter->alloc_rx_buff_failed++;
681 goto no_buffers;
682 }
Nick Nunley0be3f552010-04-27 13:09:05 +0000683 ps_page->dma = dma_map_page(&pdev->dev,
684 ps_page->page,
685 0, PAGE_SIZE,
686 DMA_FROM_DEVICE);
687 if (dma_mapping_error(&pdev->dev,
688 ps_page->dma)) {
Auke Kok47f44e42007-10-25 13:57:44 -0700689 dev_err(&adapter->pdev->dev,
Bruce Allanaf667a22010-12-31 06:10:01 +0000690 "Rx DMA page map failed\n");
Auke Kok47f44e42007-10-25 13:57:44 -0700691 adapter->rx_dma_failed++;
692 goto no_buffers;
693 }
694 }
695 /*
696 * Refresh the desc even if buffer_addrs
697 * didn't change because each write-back
698 * erases this info.
699 */
Bruce Allanaf667a22010-12-31 06:10:01 +0000700 rx_desc->read.buffer_addr[j + 1] =
701 cpu_to_le64(ps_page->dma);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700702 }
703
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000704 skb = __netdev_alloc_skb_ip_align(netdev,
705 adapter->rx_ps_bsize0,
706 gfp);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700707
708 if (!skb) {
709 adapter->alloc_rx_buff_failed++;
710 break;
711 }
712
Auke Kokbc7f75f2007-09-17 12:30:59 -0700713 buffer_info->skb = skb;
Nick Nunley0be3f552010-04-27 13:09:05 +0000714 buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
Auke Kokbc7f75f2007-09-17 12:30:59 -0700715 adapter->rx_ps_bsize0,
Nick Nunley0be3f552010-04-27 13:09:05 +0000716 DMA_FROM_DEVICE);
717 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
Bruce Allanaf667a22010-12-31 06:10:01 +0000718 dev_err(&pdev->dev, "Rx DMA map failed\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -0700719 adapter->rx_dma_failed++;
720 /* cleanup skb */
721 dev_kfree_skb_any(skb);
722 buffer_info->skb = NULL;
723 break;
724 }
725
726 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
727
Tom Herbert50849d72010-05-05 14:02:49 +0000728 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
729 /*
730 * Force memory writes to complete before letting h/w
731 * know there are new descriptors to fetch. (Only
732 * applicable for weak-ordered memory model archs,
733 * such as IA-64).
734 */
735 wmb();
David S. Miller823dcd22011-08-20 10:39:12 -0700736 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
Bruce Allan55aa6982011-12-16 00:45:45 +0000737 e1000e_update_rdt_wa(rx_ring, i << 1);
David S. Miller823dcd22011-08-20 10:39:12 -0700738 else
Bruce Allanc5083cf2011-12-16 00:45:40 +0000739 writel(i << 1, rx_ring->tail);
Tom Herbert50849d72010-05-05 14:02:49 +0000740 }
741
Auke Kokbc7f75f2007-09-17 12:30:59 -0700742 i++;
743 if (i == rx_ring->count)
744 i = 0;
745 buffer_info = &rx_ring->buffer_info[i];
746 }
747
748no_buffers:
Tom Herbert50849d72010-05-05 14:02:49 +0000749 rx_ring->next_to_use = i;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700750}
751
752/**
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700753 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
Bruce Allan55aa6982011-12-16 00:45:45 +0000754 * @rx_ring: Rx descriptor ring
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700755 * @cleaned_count: number of buffers to allocate this pass
756 **/
757
Bruce Allan55aa6982011-12-16 00:45:45 +0000758static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring *rx_ring,
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000759 int cleaned_count, gfp_t gfp)
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700760{
Bruce Allan55aa6982011-12-16 00:45:45 +0000761 struct e1000_adapter *adapter = rx_ring->adapter;
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700762 struct net_device *netdev = adapter->netdev;
763 struct pci_dev *pdev = adapter->pdev;
Bruce Allan5f450212011-07-22 06:21:46 +0000764 union e1000_rx_desc_extended *rx_desc;
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700765 struct e1000_buffer *buffer_info;
766 struct sk_buff *skb;
767 unsigned int i;
Eric Dumazet89d71a62009-10-13 05:34:20 +0000768 unsigned int bufsz = 256 - 16 /* for skb_reserve */;
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700769
770 i = rx_ring->next_to_use;
771 buffer_info = &rx_ring->buffer_info[i];
772
773 while (cleaned_count--) {
774 skb = buffer_info->skb;
775 if (skb) {
776 skb_trim(skb, 0);
777 goto check_page;
778 }
779
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000780 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp);
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700781 if (unlikely(!skb)) {
782 /* Better luck next round */
783 adapter->alloc_rx_buff_failed++;
784 break;
785 }
786
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700787 buffer_info->skb = skb;
788check_page:
789 /* allocate a new page if necessary */
790 if (!buffer_info->page) {
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000791 buffer_info->page = alloc_page(gfp);
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700792 if (unlikely(!buffer_info->page)) {
793 adapter->alloc_rx_buff_failed++;
794 break;
795 }
796 }
797
798 if (!buffer_info->dma)
Nick Nunley0be3f552010-04-27 13:09:05 +0000799 buffer_info->dma = dma_map_page(&pdev->dev,
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700800 buffer_info->page, 0,
801 PAGE_SIZE,
Nick Nunley0be3f552010-04-27 13:09:05 +0000802 DMA_FROM_DEVICE);
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700803
Bruce Allan5f450212011-07-22 06:21:46 +0000804 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
805 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700806
807 if (unlikely(++i == rx_ring->count))
808 i = 0;
809 buffer_info = &rx_ring->buffer_info[i];
810 }
811
812 if (likely(rx_ring->next_to_use != i)) {
813 rx_ring->next_to_use = i;
814 if (unlikely(i-- == 0))
815 i = (rx_ring->count - 1);
816
817 /* Force memory writes to complete before letting h/w
818 * know there are new descriptors to fetch. (Only
819 * applicable for weak-ordered memory model archs,
820 * such as IA-64). */
821 wmb();
David S. Miller823dcd22011-08-20 10:39:12 -0700822 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
Bruce Allan55aa6982011-12-16 00:45:45 +0000823 e1000e_update_rdt_wa(rx_ring, i);
David S. Miller823dcd22011-08-20 10:39:12 -0700824 else
Bruce Allanc5083cf2011-12-16 00:45:40 +0000825 writel(i, rx_ring->tail);
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700826 }
827}
828
Bruce Allan70495a52012-01-11 01:26:50 +0000829static inline void e1000_rx_hash(struct net_device *netdev, __le32 rss,
830 struct sk_buff *skb)
831{
832 if (netdev->features & NETIF_F_RXHASH)
833 skb->rxhash = le32_to_cpu(rss);
834}
835
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700836/**
Bruce Allan55aa6982011-12-16 00:45:45 +0000837 * e1000_clean_rx_irq - Send received data up the network stack
838 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -0700839 *
840 * the return value indicates whether actual cleaning was done, there
841 * is no guarantee that everything was cleaned
842 **/
Bruce Allan55aa6982011-12-16 00:45:45 +0000843static bool e1000_clean_rx_irq(struct e1000_ring *rx_ring, int *work_done,
844 int work_to_do)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700845{
Bruce Allan55aa6982011-12-16 00:45:45 +0000846 struct e1000_adapter *adapter = rx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700847 struct net_device *netdev = adapter->netdev;
848 struct pci_dev *pdev = adapter->pdev;
Bruce Allan3bb99fe2009-11-20 23:25:07 +0000849 struct e1000_hw *hw = &adapter->hw;
Bruce Allan5f450212011-07-22 06:21:46 +0000850 union e1000_rx_desc_extended *rx_desc, *next_rxd;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700851 struct e1000_buffer *buffer_info, *next_buffer;
Bruce Allan5f450212011-07-22 06:21:46 +0000852 u32 length, staterr;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700853 unsigned int i;
854 int cleaned_count = 0;
Rusty Russell3db1cd52011-12-19 13:56:45 +0000855 bool cleaned = false;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700856 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
857
858 i = rx_ring->next_to_clean;
Bruce Allan5f450212011-07-22 06:21:46 +0000859 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
860 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700861 buffer_info = &rx_ring->buffer_info[i];
862
Bruce Allan5f450212011-07-22 06:21:46 +0000863 while (staterr & E1000_RXD_STAT_DD) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700864 struct sk_buff *skb;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700865
866 if (*work_done >= work_to_do)
867 break;
868 (*work_done)++;
Jeff Kirsher2d0bb1c2010-08-08 16:02:31 +0000869 rmb(); /* read descriptor and rx_buffer_info after status DD */
Auke Kokbc7f75f2007-09-17 12:30:59 -0700870
Auke Kokbc7f75f2007-09-17 12:30:59 -0700871 skb = buffer_info->skb;
872 buffer_info->skb = NULL;
873
874 prefetch(skb->data - NET_IP_ALIGN);
875
876 i++;
877 if (i == rx_ring->count)
878 i = 0;
Bruce Allan5f450212011-07-22 06:21:46 +0000879 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700880 prefetch(next_rxd);
881
882 next_buffer = &rx_ring->buffer_info[i];
883
Rusty Russell3db1cd52011-12-19 13:56:45 +0000884 cleaned = true;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700885 cleaned_count++;
Nick Nunley0be3f552010-04-27 13:09:05 +0000886 dma_unmap_single(&pdev->dev,
Auke Kokbc7f75f2007-09-17 12:30:59 -0700887 buffer_info->dma,
888 adapter->rx_buffer_len,
Nick Nunley0be3f552010-04-27 13:09:05 +0000889 DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700890 buffer_info->dma = 0;
891
Bruce Allan5f450212011-07-22 06:21:46 +0000892 length = le16_to_cpu(rx_desc->wb.upper.length);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700893
Jesse Brandeburgb94b5022010-01-19 14:15:59 +0000894 /*
895 * !EOP means multiple descriptors were used to store a single
896 * packet, if that's the case we need to toss it. In fact, we
897 * need to toss every packet with the EOP bit clear and the
898 * next frame that _does_ have the EOP bit set, as it is by
899 * definition only a frame fragment
900 */
Bruce Allan5f450212011-07-22 06:21:46 +0000901 if (unlikely(!(staterr & E1000_RXD_STAT_EOP)))
Jesse Brandeburgb94b5022010-01-19 14:15:59 +0000902 adapter->flags2 |= FLAG2_IS_DISCARDING;
903
904 if (adapter->flags2 & FLAG2_IS_DISCARDING) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700905 /* All receives must fit into a single buffer */
Bruce Allan3bb99fe2009-11-20 23:25:07 +0000906 e_dbg("Receive packet consumed multiple buffers\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -0700907 /* recycle */
908 buffer_info->skb = skb;
Bruce Allan5f450212011-07-22 06:21:46 +0000909 if (staterr & E1000_RXD_STAT_EOP)
Jesse Brandeburgb94b5022010-01-19 14:15:59 +0000910 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700911 goto next_desc;
912 }
913
Ben Greearcf955e62012-02-11 15:39:51 +0000914 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
915 !(netdev->features & NETIF_F_RXALL))) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700916 /* recycle */
917 buffer_info->skb = skb;
918 goto next_desc;
919 }
920
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +0000921 /* adjust length to remove Ethernet CRC */
Ben Greear01840392012-02-11 15:39:25 +0000922 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
923 /* If configured to store CRC, don't subtract FCS,
924 * but keep the FCS bytes out of the total_rx_bytes
925 * counter
926 */
927 if (netdev->features & NETIF_F_RXFCS)
928 total_rx_bytes -= 4;
929 else
930 length -= 4;
931 }
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +0000932
Auke Kokbc7f75f2007-09-17 12:30:59 -0700933 total_rx_bytes += length;
934 total_rx_packets++;
935
Bruce Allanad680762008-03-28 09:15:03 -0700936 /*
937 * code added for copybreak, this should improve
Auke Kokbc7f75f2007-09-17 12:30:59 -0700938 * performance for small packets with large amounts
Bruce Allanad680762008-03-28 09:15:03 -0700939 * of reassembly being done in the stack
940 */
Auke Kokbc7f75f2007-09-17 12:30:59 -0700941 if (length < copybreak) {
942 struct sk_buff *new_skb =
Eric Dumazet89d71a62009-10-13 05:34:20 +0000943 netdev_alloc_skb_ip_align(netdev, length);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700944 if (new_skb) {
Bruce Allan808ff672008-08-08 18:35:56 -0700945 skb_copy_to_linear_data_offset(new_skb,
946 -NET_IP_ALIGN,
947 (skb->data -
948 NET_IP_ALIGN),
949 (length +
950 NET_IP_ALIGN));
Auke Kokbc7f75f2007-09-17 12:30:59 -0700951 /* save the skb in buffer_info as good */
952 buffer_info->skb = skb;
953 skb = new_skb;
954 }
955 /* else just continue with the old one */
956 }
957 /* end copybreak code */
958 skb_put(skb, length);
959
960 /* Receive Checksum Offload */
Bruce Allan2e1706f2012-06-30 20:02:42 +0000961 e1000_rx_checksum(adapter, staterr, skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700962
Bruce Allan70495a52012-01-11 01:26:50 +0000963 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
964
Bruce Allan5f450212011-07-22 06:21:46 +0000965 e1000_receive_skb(adapter, netdev, skb, staterr,
966 rx_desc->wb.upper.vlan);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700967
968next_desc:
Bruce Allan5f450212011-07-22 06:21:46 +0000969 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700970
971 /* return some buffers to hardware, one at a time is too slow */
972 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
Bruce Allan55aa6982011-12-16 00:45:45 +0000973 adapter->alloc_rx_buf(rx_ring, cleaned_count,
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000974 GFP_ATOMIC);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700975 cleaned_count = 0;
976 }
977
978 /* use prefetched values */
979 rx_desc = next_rxd;
980 buffer_info = next_buffer;
Bruce Allan5f450212011-07-22 06:21:46 +0000981
982 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700983 }
984 rx_ring->next_to_clean = i;
985
986 cleaned_count = e1000_desc_unused(rx_ring);
987 if (cleaned_count)
Bruce Allan55aa6982011-12-16 00:45:45 +0000988 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700989
Auke Kokbc7f75f2007-09-17 12:30:59 -0700990 adapter->total_rx_bytes += total_rx_bytes;
Bruce Allan7c257692008-04-23 11:09:00 -0700991 adapter->total_rx_packets += total_rx_packets;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700992 return cleaned;
993}
994
Bruce Allan55aa6982011-12-16 00:45:45 +0000995static void e1000_put_txbuf(struct e1000_ring *tx_ring,
996 struct e1000_buffer *buffer_info)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700997{
Bruce Allan55aa6982011-12-16 00:45:45 +0000998 struct e1000_adapter *adapter = tx_ring->adapter;
999
Alexander Duyck03b13202009-12-02 16:45:31 +00001000 if (buffer_info->dma) {
1001 if (buffer_info->mapped_as_page)
Nick Nunley0be3f552010-04-27 13:09:05 +00001002 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma,
1003 buffer_info->length, DMA_TO_DEVICE);
Alexander Duyck03b13202009-12-02 16:45:31 +00001004 else
Nick Nunley0be3f552010-04-27 13:09:05 +00001005 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma,
1006 buffer_info->length, DMA_TO_DEVICE);
Alexander Duyck03b13202009-12-02 16:45:31 +00001007 buffer_info->dma = 0;
1008 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07001009 if (buffer_info->skb) {
1010 dev_kfree_skb_any(buffer_info->skb);
1011 buffer_info->skb = NULL;
1012 }
Alexander Duyck1b7719c2009-03-19 01:12:50 +00001013 buffer_info->time_stamp = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001014}
1015
Bruce Allan41cec6f2009-11-20 23:28:56 +00001016static void e1000_print_hw_hang(struct work_struct *work)
Auke Kokbc7f75f2007-09-17 12:30:59 -07001017{
Bruce Allan41cec6f2009-11-20 23:28:56 +00001018 struct e1000_adapter *adapter = container_of(work,
1019 struct e1000_adapter,
1020 print_hang_task);
Jeff Kirsher09357b02011-11-18 14:25:00 +00001021 struct net_device *netdev = adapter->netdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001022 struct e1000_ring *tx_ring = adapter->tx_ring;
1023 unsigned int i = tx_ring->next_to_clean;
1024 unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
1025 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop);
Bruce Allan41cec6f2009-11-20 23:28:56 +00001026 struct e1000_hw *hw = &adapter->hw;
1027 u16 phy_status, phy_1000t_status, phy_ext_status;
1028 u16 pci_status;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001029
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00001030 if (test_bit(__E1000_DOWN, &adapter->state))
1031 return;
1032
Jeff Kirsher09357b02011-11-18 14:25:00 +00001033 if (!adapter->tx_hang_recheck &&
1034 (adapter->flags2 & FLAG2_DMA_BURST)) {
Matthew Vick397c0202012-03-16 09:03:01 +00001035 /*
1036 * May be block on write-back, flush and detect again
Jeff Kirsher09357b02011-11-18 14:25:00 +00001037 * flush pending descriptor writebacks to memory
1038 */
1039 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
1040 /* execute the writes immediately */
1041 e1e_flush();
Matthew Vickbf030852012-03-16 09:03:00 +00001042 /*
1043 * Due to rare timing issues, write to TIDV again to ensure
1044 * the write is successful
1045 */
1046 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
1047 /* execute the writes immediately */
1048 e1e_flush();
Jeff Kirsher09357b02011-11-18 14:25:00 +00001049 adapter->tx_hang_recheck = true;
1050 return;
1051 }
1052 /* Real hang detected */
1053 adapter->tx_hang_recheck = false;
1054 netif_stop_queue(netdev);
1055
Bruce Allan41cec6f2009-11-20 23:28:56 +00001056 e1e_rphy(hw, PHY_STATUS, &phy_status);
1057 e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status);
1058 e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status);
1059
1060 pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status);
1061
1062 /* detected Hardware unit hang */
1063 e_err("Detected Hardware Unit Hang:\n"
Jeff Kirsher44defeb2008-08-04 17:20:41 -07001064 " TDH <%x>\n"
1065 " TDT <%x>\n"
1066 " next_to_use <%x>\n"
1067 " next_to_clean <%x>\n"
1068 "buffer_info[next_to_clean]:\n"
1069 " time_stamp <%lx>\n"
1070 " next_to_watch <%x>\n"
1071 " jiffies <%lx>\n"
Bruce Allan41cec6f2009-11-20 23:28:56 +00001072 " next_to_watch.status <%x>\n"
1073 "MAC Status <%x>\n"
1074 "PHY Status <%x>\n"
1075 "PHY 1000BASE-T Status <%x>\n"
1076 "PHY Extended Status <%x>\n"
1077 "PCI Status <%x>\n",
Bruce Allanc5083cf2011-12-16 00:45:40 +00001078 readl(tx_ring->head),
1079 readl(tx_ring->tail),
Jeff Kirsher44defeb2008-08-04 17:20:41 -07001080 tx_ring->next_to_use,
1081 tx_ring->next_to_clean,
1082 tx_ring->buffer_info[eop].time_stamp,
1083 eop,
1084 jiffies,
Bruce Allan41cec6f2009-11-20 23:28:56 +00001085 eop_desc->upper.fields.status,
1086 er32(STATUS),
1087 phy_status,
1088 phy_1000t_status,
1089 phy_ext_status,
1090 pci_status);
Bruce Allan7c0427e2012-03-20 03:48:08 +00001091
1092 /* Suggest workaround for known h/w issue */
1093 if ((hw->mac.type == e1000_pchlan) && (er32(CTRL) & E1000_CTRL_TFCE))
1094 e_err("Try turning off Tx pause (flow control) via ethtool\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07001095}
1096
1097/**
1098 * e1000_clean_tx_irq - Reclaim resources after transmit completes
Bruce Allan55aa6982011-12-16 00:45:45 +00001099 * @tx_ring: Tx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07001100 *
1101 * the return value indicates whether actual cleaning was done, there
1102 * is no guarantee that everything was cleaned
1103 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00001104static bool e1000_clean_tx_irq(struct e1000_ring *tx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07001105{
Bruce Allan55aa6982011-12-16 00:45:45 +00001106 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001107 struct net_device *netdev = adapter->netdev;
1108 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001109 struct e1000_tx_desc *tx_desc, *eop_desc;
1110 struct e1000_buffer *buffer_info;
1111 unsigned int i, eop;
1112 unsigned int count = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001113 unsigned int total_tx_bytes = 0, total_tx_packets = 0;
Tom Herbert3f0cfa32011-11-28 16:33:16 +00001114 unsigned int bytes_compl = 0, pkts_compl = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001115
1116 i = tx_ring->next_to_clean;
1117 eop = tx_ring->buffer_info[i].next_to_watch;
1118 eop_desc = E1000_TX_DESC(*tx_ring, eop);
1119
Alexander Duyck12d04a32009-03-25 22:05:03 +00001120 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
1121 (count < tx_ring->count)) {
Jesse Brandeburga86043c2009-04-16 16:59:28 +00001122 bool cleaned = false;
Jeff Kirsher2d0bb1c2010-08-08 16:02:31 +00001123 rmb(); /* read buffer_info after eop_desc */
Jesse Brandeburga86043c2009-04-16 16:59:28 +00001124 for (; !cleaned; count++) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07001125 tx_desc = E1000_TX_DESC(*tx_ring, i);
1126 buffer_info = &tx_ring->buffer_info[i];
1127 cleaned = (i == eop);
1128
1129 if (cleaned) {
Tom Herbert9ed318d2010-05-05 14:02:27 +00001130 total_tx_packets += buffer_info->segs;
1131 total_tx_bytes += buffer_info->bytecount;
Tom Herbert3f0cfa32011-11-28 16:33:16 +00001132 if (buffer_info->skb) {
1133 bytes_compl += buffer_info->skb->len;
1134 pkts_compl++;
1135 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07001136 }
1137
Bruce Allan55aa6982011-12-16 00:45:45 +00001138 e1000_put_txbuf(tx_ring, buffer_info);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001139 tx_desc->upper.data = 0;
1140
1141 i++;
1142 if (i == tx_ring->count)
1143 i = 0;
1144 }
1145
Terry Loftindac87612010-04-09 10:29:49 +00001146 if (i == tx_ring->next_to_use)
1147 break;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001148 eop = tx_ring->buffer_info[i].next_to_watch;
1149 eop_desc = E1000_TX_DESC(*tx_ring, eop);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001150 }
1151
1152 tx_ring->next_to_clean = i;
1153
Tom Herbert3f0cfa32011-11-28 16:33:16 +00001154 netdev_completed_queue(netdev, pkts_compl, bytes_compl);
1155
Auke Kokbc7f75f2007-09-17 12:30:59 -07001156#define TX_WAKE_THRESHOLD 32
Jesse Brandeburga86043c2009-04-16 16:59:28 +00001157 if (count && netif_carrier_ok(netdev) &&
1158 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07001159 /* Make sure that anybody stopping the queue after this
1160 * sees the new next_to_clean.
1161 */
1162 smp_mb();
1163
1164 if (netif_queue_stopped(netdev) &&
1165 !(test_bit(__E1000_DOWN, &adapter->state))) {
1166 netif_wake_queue(netdev);
1167 ++adapter->restart_queue;
1168 }
1169 }
1170
1171 if (adapter->detect_tx_hung) {
Bruce Allan41cec6f2009-11-20 23:28:56 +00001172 /*
1173 * Detect a transmit hang in hardware, this serializes the
1174 * check with the clearing of time_stamp and movement of i
1175 */
Rusty Russell3db1cd52011-12-19 13:56:45 +00001176 adapter->detect_tx_hung = false;
Alexander Duyck12d04a32009-03-25 22:05:03 +00001177 if (tx_ring->buffer_info[i].time_stamp &&
1178 time_after(jiffies, tx_ring->buffer_info[i].time_stamp
Joe Perches8e95a202009-12-03 07:58:21 +00001179 + (adapter->tx_timeout_factor * HZ)) &&
Jeff Kirsher09357b02011-11-18 14:25:00 +00001180 !(er32(STATUS) & E1000_STATUS_TXOFF))
Bruce Allan41cec6f2009-11-20 23:28:56 +00001181 schedule_work(&adapter->print_hang_task);
Jeff Kirsher09357b02011-11-18 14:25:00 +00001182 else
1183 adapter->tx_hang_recheck = false;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001184 }
1185 adapter->total_tx_bytes += total_tx_bytes;
1186 adapter->total_tx_packets += total_tx_packets;
Eric Dumazet807540b2010-09-23 05:40:09 +00001187 return count < tx_ring->count;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001188}
1189
1190/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07001191 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
Bruce Allan55aa6982011-12-16 00:45:45 +00001192 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07001193 *
1194 * the return value indicates whether actual cleaning was done, there
1195 * is no guarantee that everything was cleaned
1196 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00001197static bool e1000_clean_rx_irq_ps(struct e1000_ring *rx_ring, int *work_done,
1198 int work_to_do)
Auke Kokbc7f75f2007-09-17 12:30:59 -07001199{
Bruce Allan55aa6982011-12-16 00:45:45 +00001200 struct e1000_adapter *adapter = rx_ring->adapter;
Bruce Allan3bb99fe2009-11-20 23:25:07 +00001201 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001202 union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
1203 struct net_device *netdev = adapter->netdev;
1204 struct pci_dev *pdev = adapter->pdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001205 struct e1000_buffer *buffer_info, *next_buffer;
1206 struct e1000_ps_page *ps_page;
1207 struct sk_buff *skb;
1208 unsigned int i, j;
1209 u32 length, staterr;
1210 int cleaned_count = 0;
Rusty Russell3db1cd52011-12-19 13:56:45 +00001211 bool cleaned = false;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001212 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
1213
1214 i = rx_ring->next_to_clean;
1215 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
1216 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1217 buffer_info = &rx_ring->buffer_info[i];
1218
1219 while (staterr & E1000_RXD_STAT_DD) {
1220 if (*work_done >= work_to_do)
1221 break;
1222 (*work_done)++;
1223 skb = buffer_info->skb;
Jeff Kirsher2d0bb1c2010-08-08 16:02:31 +00001224 rmb(); /* read descriptor and rx_buffer_info after status DD */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001225
1226 /* in the packet split case this is header only */
1227 prefetch(skb->data - NET_IP_ALIGN);
1228
1229 i++;
1230 if (i == rx_ring->count)
1231 i = 0;
1232 next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
1233 prefetch(next_rxd);
1234
1235 next_buffer = &rx_ring->buffer_info[i];
1236
Rusty Russell3db1cd52011-12-19 13:56:45 +00001237 cleaned = true;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001238 cleaned_count++;
Nick Nunley0be3f552010-04-27 13:09:05 +00001239 dma_unmap_single(&pdev->dev, buffer_info->dma,
Bruce Allanaf667a22010-12-31 06:10:01 +00001240 adapter->rx_ps_bsize0, DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001241 buffer_info->dma = 0;
1242
Bruce Allanaf667a22010-12-31 06:10:01 +00001243 /* see !EOP comment in other Rx routine */
Jesse Brandeburgb94b5022010-01-19 14:15:59 +00001244 if (!(staterr & E1000_RXD_STAT_EOP))
1245 adapter->flags2 |= FLAG2_IS_DISCARDING;
1246
1247 if (adapter->flags2 & FLAG2_IS_DISCARDING) {
Jeff Kirsheref456f82011-11-03 11:40:28 +00001248 e_dbg("Packet Split buffers didn't pick up the full packet\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07001249 dev_kfree_skb_irq(skb);
Jesse Brandeburgb94b5022010-01-19 14:15:59 +00001250 if (staterr & E1000_RXD_STAT_EOP)
1251 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001252 goto next_desc;
1253 }
1254
Ben Greearcf955e62012-02-11 15:39:51 +00001255 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
1256 !(netdev->features & NETIF_F_RXALL))) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07001257 dev_kfree_skb_irq(skb);
1258 goto next_desc;
1259 }
1260
1261 length = le16_to_cpu(rx_desc->wb.middle.length0);
1262
1263 if (!length) {
Jeff Kirsheref456f82011-11-03 11:40:28 +00001264 e_dbg("Last part of the packet spanning multiple descriptors\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07001265 dev_kfree_skb_irq(skb);
1266 goto next_desc;
1267 }
1268
1269 /* Good Receive */
1270 skb_put(skb, length);
1271
1272 {
Bruce Allan0e15df42012-01-31 06:37:11 +00001273 /*
1274 * this looks ugly, but it seems compiler issues make
1275 * it more efficient than reusing j
1276 */
1277 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001278
Bruce Allanad680762008-03-28 09:15:03 -07001279 /*
Bruce Allan0e15df42012-01-31 06:37:11 +00001280 * page alloc/put takes too long and effects small
1281 * packet throughput, so unsplit small packets and
1282 * save the alloc/put only valid in softirq (napi)
1283 * context to call kmap_*
Bruce Allanad680762008-03-28 09:15:03 -07001284 */
Bruce Allan0e15df42012-01-31 06:37:11 +00001285 if (l1 && (l1 <= copybreak) &&
1286 ((length + l1) <= adapter->rx_ps_bsize0)) {
1287 u8 *vaddr;
Auke Kok140a7482007-10-25 13:57:58 -07001288
Bruce Allan0e15df42012-01-31 06:37:11 +00001289 ps_page = &buffer_info->ps_pages[0];
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +00001290
Bruce Allan0e15df42012-01-31 06:37:11 +00001291 /*
1292 * there is no documentation about how to call
1293 * kmap_atomic, so we can't hold the mapping
1294 * very long
1295 */
1296 dma_sync_single_for_cpu(&pdev->dev,
1297 ps_page->dma,
1298 PAGE_SIZE,
1299 DMA_FROM_DEVICE);
Linus Torvalds9f393832012-03-21 09:40:26 -07001300 vaddr = kmap_atomic(ps_page->page);
Bruce Allan0e15df42012-01-31 06:37:11 +00001301 memcpy(skb_tail_pointer(skb), vaddr, l1);
Linus Torvalds9f393832012-03-21 09:40:26 -07001302 kunmap_atomic(vaddr);
Bruce Allan0e15df42012-01-31 06:37:11 +00001303 dma_sync_single_for_device(&pdev->dev,
1304 ps_page->dma,
1305 PAGE_SIZE,
1306 DMA_FROM_DEVICE);
1307
1308 /* remove the CRC */
Ben Greear01840392012-02-11 15:39:25 +00001309 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
1310 if (!(netdev->features & NETIF_F_RXFCS))
1311 l1 -= 4;
1312 }
Bruce Allan0e15df42012-01-31 06:37:11 +00001313
1314 skb_put(skb, l1);
1315 goto copydone;
1316 } /* if */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001317 }
1318
1319 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
1320 length = le16_to_cpu(rx_desc->wb.upper.length[j]);
1321 if (!length)
1322 break;
1323
Auke Kok47f44e42007-10-25 13:57:44 -07001324 ps_page = &buffer_info->ps_pages[j];
Nick Nunley0be3f552010-04-27 13:09:05 +00001325 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
1326 DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001327 ps_page->dma = 0;
1328 skb_fill_page_desc(skb, j, ps_page->page, 0, length);
1329 ps_page->page = NULL;
1330 skb->len += length;
1331 skb->data_len += length;
Eric Dumazet98a045d2011-10-13 08:03:36 +00001332 skb->truesize += PAGE_SIZE;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001333 }
1334
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +00001335 /* strip the ethernet crc, problem is we're using pages now so
1336 * this whole operation can get a little cpu intensive
1337 */
Ben Greear01840392012-02-11 15:39:25 +00001338 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
1339 if (!(netdev->features & NETIF_F_RXFCS))
1340 pskb_trim(skb, skb->len - 4);
1341 }
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +00001342
Auke Kokbc7f75f2007-09-17 12:30:59 -07001343copydone:
1344 total_rx_bytes += skb->len;
1345 total_rx_packets++;
1346
Bruce Allan2e1706f2012-06-30 20:02:42 +00001347 e1000_rx_checksum(adapter, staterr, skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001348
Bruce Allan70495a52012-01-11 01:26:50 +00001349 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
1350
Auke Kokbc7f75f2007-09-17 12:30:59 -07001351 if (rx_desc->wb.upper.header_status &
1352 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))
1353 adapter->rx_hdr_split++;
1354
1355 e1000_receive_skb(adapter, netdev, skb,
1356 staterr, rx_desc->wb.middle.vlan);
1357
1358next_desc:
1359 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
1360 buffer_info->skb = NULL;
1361
1362 /* return some buffers to hardware, one at a time is too slow */
1363 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
Bruce Allan55aa6982011-12-16 00:45:45 +00001364 adapter->alloc_rx_buf(rx_ring, cleaned_count,
Jeff Kirsherc2fed992011-07-12 16:10:12 +00001365 GFP_ATOMIC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001366 cleaned_count = 0;
1367 }
1368
1369 /* use prefetched values */
1370 rx_desc = next_rxd;
1371 buffer_info = next_buffer;
1372
1373 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1374 }
1375 rx_ring->next_to_clean = i;
1376
1377 cleaned_count = e1000_desc_unused(rx_ring);
1378 if (cleaned_count)
Bruce Allan55aa6982011-12-16 00:45:45 +00001379 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001380
Auke Kokbc7f75f2007-09-17 12:30:59 -07001381 adapter->total_rx_bytes += total_rx_bytes;
Bruce Allan7c257692008-04-23 11:09:00 -07001382 adapter->total_rx_packets += total_rx_packets;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001383 return cleaned;
1384}
1385
1386/**
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001387 * e1000_consume_page - helper function
1388 **/
1389static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
1390 u16 length)
1391{
1392 bi->page = NULL;
1393 skb->len += length;
1394 skb->data_len += length;
Eric Dumazet98a045d2011-10-13 08:03:36 +00001395 skb->truesize += PAGE_SIZE;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001396}
1397
1398/**
1399 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1400 * @adapter: board private structure
1401 *
1402 * the return value indicates whether actual cleaning was done, there
1403 * is no guarantee that everything was cleaned
1404 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00001405static bool e1000_clean_jumbo_rx_irq(struct e1000_ring *rx_ring, int *work_done,
1406 int work_to_do)
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001407{
Bruce Allan55aa6982011-12-16 00:45:45 +00001408 struct e1000_adapter *adapter = rx_ring->adapter;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001409 struct net_device *netdev = adapter->netdev;
1410 struct pci_dev *pdev = adapter->pdev;
Bruce Allan5f450212011-07-22 06:21:46 +00001411 union e1000_rx_desc_extended *rx_desc, *next_rxd;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001412 struct e1000_buffer *buffer_info, *next_buffer;
Bruce Allan5f450212011-07-22 06:21:46 +00001413 u32 length, staterr;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001414 unsigned int i;
1415 int cleaned_count = 0;
1416 bool cleaned = false;
1417 unsigned int total_rx_bytes=0, total_rx_packets=0;
1418
1419 i = rx_ring->next_to_clean;
Bruce Allan5f450212011-07-22 06:21:46 +00001420 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
1421 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001422 buffer_info = &rx_ring->buffer_info[i];
1423
Bruce Allan5f450212011-07-22 06:21:46 +00001424 while (staterr & E1000_RXD_STAT_DD) {
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001425 struct sk_buff *skb;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001426
1427 if (*work_done >= work_to_do)
1428 break;
1429 (*work_done)++;
Jeff Kirsher2d0bb1c2010-08-08 16:02:31 +00001430 rmb(); /* read descriptor and rx_buffer_info after status DD */
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001431
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001432 skb = buffer_info->skb;
1433 buffer_info->skb = NULL;
1434
1435 ++i;
1436 if (i == rx_ring->count)
1437 i = 0;
Bruce Allan5f450212011-07-22 06:21:46 +00001438 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001439 prefetch(next_rxd);
1440
1441 next_buffer = &rx_ring->buffer_info[i];
1442
1443 cleaned = true;
1444 cleaned_count++;
Nick Nunley0be3f552010-04-27 13:09:05 +00001445 dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE,
1446 DMA_FROM_DEVICE);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001447 buffer_info->dma = 0;
1448
Bruce Allan5f450212011-07-22 06:21:46 +00001449 length = le16_to_cpu(rx_desc->wb.upper.length);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001450
1451 /* errors is only valid for DD + EOP descriptors */
Bruce Allan5f450212011-07-22 06:21:46 +00001452 if (unlikely((staterr & E1000_RXD_STAT_EOP) &&
Ben Greearcf955e62012-02-11 15:39:51 +00001453 ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
1454 !(netdev->features & NETIF_F_RXALL)))) {
Bruce Allan5f450212011-07-22 06:21:46 +00001455 /* recycle both page and skb */
1456 buffer_info->skb = skb;
1457 /* an error means any chain goes out the window too */
1458 if (rx_ring->rx_skb_top)
1459 dev_kfree_skb_irq(rx_ring->rx_skb_top);
1460 rx_ring->rx_skb_top = NULL;
1461 goto next_desc;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001462 }
1463
Bruce Allanf0f1a172010-12-11 05:53:32 +00001464#define rxtop (rx_ring->rx_skb_top)
Bruce Allan5f450212011-07-22 06:21:46 +00001465 if (!(staterr & E1000_RXD_STAT_EOP)) {
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001466 /* this descriptor is only the beginning (or middle) */
1467 if (!rxtop) {
1468 /* this is the beginning of a chain */
1469 rxtop = skb;
1470 skb_fill_page_desc(rxtop, 0, buffer_info->page,
1471 0, length);
1472 } else {
1473 /* this is the middle of a chain */
1474 skb_fill_page_desc(rxtop,
1475 skb_shinfo(rxtop)->nr_frags,
1476 buffer_info->page, 0, length);
1477 /* re-use the skb, only consumed the page */
1478 buffer_info->skb = skb;
1479 }
1480 e1000_consume_page(buffer_info, rxtop, length);
1481 goto next_desc;
1482 } else {
1483 if (rxtop) {
1484 /* end of the chain */
1485 skb_fill_page_desc(rxtop,
1486 skb_shinfo(rxtop)->nr_frags,
1487 buffer_info->page, 0, length);
1488 /* re-use the current skb, we only consumed the
1489 * page */
1490 buffer_info->skb = skb;
1491 skb = rxtop;
1492 rxtop = NULL;
1493 e1000_consume_page(buffer_info, skb, length);
1494 } else {
1495 /* no chain, got EOP, this buf is the packet
1496 * copybreak to save the put_page/alloc_page */
1497 if (length <= copybreak &&
1498 skb_tailroom(skb) >= length) {
1499 u8 *vaddr;
Cong Wang46790262011-11-25 23:14:23 +08001500 vaddr = kmap_atomic(buffer_info->page);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001501 memcpy(skb_tail_pointer(skb), vaddr,
1502 length);
Cong Wang46790262011-11-25 23:14:23 +08001503 kunmap_atomic(vaddr);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001504 /* re-use the page, so don't erase
1505 * buffer_info->page */
1506 skb_put(skb, length);
1507 } else {
1508 skb_fill_page_desc(skb, 0,
1509 buffer_info->page, 0,
1510 length);
1511 e1000_consume_page(buffer_info, skb,
1512 length);
1513 }
1514 }
1515 }
1516
Bruce Allan2e1706f2012-06-30 20:02:42 +00001517 /* Receive Checksum Offload */
1518 e1000_rx_checksum(adapter, staterr, skb);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001519
Bruce Allan70495a52012-01-11 01:26:50 +00001520 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
1521
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001522 /* probably a little skewed due to removing CRC */
1523 total_rx_bytes += skb->len;
1524 total_rx_packets++;
1525
1526 /* eth type trans needs skb->data to point to something */
1527 if (!pskb_may_pull(skb, ETH_HLEN)) {
Jeff Kirsher44defeb2008-08-04 17:20:41 -07001528 e_err("pskb_may_pull failed.\n");
Bruce Allanef5ab892011-02-10 08:17:21 +00001529 dev_kfree_skb_irq(skb);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001530 goto next_desc;
1531 }
1532
Bruce Allan5f450212011-07-22 06:21:46 +00001533 e1000_receive_skb(adapter, netdev, skb, staterr,
1534 rx_desc->wb.upper.vlan);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001535
1536next_desc:
Bruce Allan5f450212011-07-22 06:21:46 +00001537 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001538
1539 /* return some buffers to hardware, one at a time is too slow */
1540 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
Bruce Allan55aa6982011-12-16 00:45:45 +00001541 adapter->alloc_rx_buf(rx_ring, cleaned_count,
Jeff Kirsherc2fed992011-07-12 16:10:12 +00001542 GFP_ATOMIC);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001543 cleaned_count = 0;
1544 }
1545
1546 /* use prefetched values */
1547 rx_desc = next_rxd;
1548 buffer_info = next_buffer;
Bruce Allan5f450212011-07-22 06:21:46 +00001549
1550 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001551 }
1552 rx_ring->next_to_clean = i;
1553
1554 cleaned_count = e1000_desc_unused(rx_ring);
1555 if (cleaned_count)
Bruce Allan55aa6982011-12-16 00:45:45 +00001556 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001557
1558 adapter->total_rx_bytes += total_rx_bytes;
1559 adapter->total_rx_packets += total_rx_packets;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001560 return cleaned;
1561}
1562
1563/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07001564 * e1000_clean_rx_ring - Free Rx Buffers per Queue
Bruce Allan55aa6982011-12-16 00:45:45 +00001565 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07001566 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00001567static void e1000_clean_rx_ring(struct e1000_ring *rx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07001568{
Bruce Allan55aa6982011-12-16 00:45:45 +00001569 struct e1000_adapter *adapter = rx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001570 struct e1000_buffer *buffer_info;
1571 struct e1000_ps_page *ps_page;
1572 struct pci_dev *pdev = adapter->pdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001573 unsigned int i, j;
1574
1575 /* Free all the Rx ring sk_buffs */
1576 for (i = 0; i < rx_ring->count; i++) {
1577 buffer_info = &rx_ring->buffer_info[i];
1578 if (buffer_info->dma) {
1579 if (adapter->clean_rx == e1000_clean_rx_irq)
Nick Nunley0be3f552010-04-27 13:09:05 +00001580 dma_unmap_single(&pdev->dev, buffer_info->dma,
Auke Kokbc7f75f2007-09-17 12:30:59 -07001581 adapter->rx_buffer_len,
Nick Nunley0be3f552010-04-27 13:09:05 +00001582 DMA_FROM_DEVICE);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001583 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq)
Nick Nunley0be3f552010-04-27 13:09:05 +00001584 dma_unmap_page(&pdev->dev, buffer_info->dma,
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001585 PAGE_SIZE,
Nick Nunley0be3f552010-04-27 13:09:05 +00001586 DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001587 else if (adapter->clean_rx == e1000_clean_rx_irq_ps)
Nick Nunley0be3f552010-04-27 13:09:05 +00001588 dma_unmap_single(&pdev->dev, buffer_info->dma,
Auke Kokbc7f75f2007-09-17 12:30:59 -07001589 adapter->rx_ps_bsize0,
Nick Nunley0be3f552010-04-27 13:09:05 +00001590 DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001591 buffer_info->dma = 0;
1592 }
1593
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001594 if (buffer_info->page) {
1595 put_page(buffer_info->page);
1596 buffer_info->page = NULL;
1597 }
1598
Auke Kokbc7f75f2007-09-17 12:30:59 -07001599 if (buffer_info->skb) {
1600 dev_kfree_skb(buffer_info->skb);
1601 buffer_info->skb = NULL;
1602 }
1603
1604 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
Auke Kok47f44e42007-10-25 13:57:44 -07001605 ps_page = &buffer_info->ps_pages[j];
Auke Kokbc7f75f2007-09-17 12:30:59 -07001606 if (!ps_page->page)
1607 break;
Nick Nunley0be3f552010-04-27 13:09:05 +00001608 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
1609 DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001610 ps_page->dma = 0;
1611 put_page(ps_page->page);
1612 ps_page->page = NULL;
1613 }
1614 }
1615
1616 /* there also may be some cached data from a chained receive */
1617 if (rx_ring->rx_skb_top) {
1618 dev_kfree_skb(rx_ring->rx_skb_top);
1619 rx_ring->rx_skb_top = NULL;
1620 }
1621
Auke Kokbc7f75f2007-09-17 12:30:59 -07001622 /* Zero out the descriptor ring */
1623 memset(rx_ring->desc, 0, rx_ring->size);
1624
1625 rx_ring->next_to_clean = 0;
1626 rx_ring->next_to_use = 0;
Jesse Brandeburgb94b5022010-01-19 14:15:59 +00001627 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001628
Bruce Allanc5083cf2011-12-16 00:45:40 +00001629 writel(0, rx_ring->head);
Bruce Allanbdc125f2012-03-20 03:47:52 +00001630 if (rx_ring->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
1631 e1000e_update_rdt_wa(rx_ring, 0);
1632 else
1633 writel(0, rx_ring->tail);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001634}
1635
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07001636static void e1000e_downshift_workaround(struct work_struct *work)
1637{
1638 struct e1000_adapter *adapter = container_of(work,
1639 struct e1000_adapter, downshift_task);
1640
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00001641 if (test_bit(__E1000_DOWN, &adapter->state))
1642 return;
1643
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07001644 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw);
1645}
1646
Auke Kokbc7f75f2007-09-17 12:30:59 -07001647/**
1648 * e1000_intr_msi - Interrupt Handler
1649 * @irq: interrupt number
1650 * @data: pointer to a network interface device structure
1651 **/
1652static irqreturn_t e1000_intr_msi(int irq, void *data)
1653{
1654 struct net_device *netdev = data;
1655 struct e1000_adapter *adapter = netdev_priv(netdev);
1656 struct e1000_hw *hw = &adapter->hw;
1657 u32 icr = er32(ICR);
1658
Bruce Allanad680762008-03-28 09:15:03 -07001659 /*
1660 * read ICR disables interrupts using IAM
1661 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001662
dave graham573cca82009-02-10 12:52:05 +00001663 if (icr & E1000_ICR_LSC) {
Bruce Allanf92518d2012-02-01 11:16:42 +00001664 hw->mac.get_link_status = true;
Bruce Allanad680762008-03-28 09:15:03 -07001665 /*
1666 * ICH8 workaround-- Call gig speed drop workaround on cable
1667 * disconnect (LSC) before accessing any PHY registers
1668 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001669 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1670 (!(er32(STATUS) & E1000_STATUS_LU)))
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07001671 schedule_work(&adapter->downshift_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001672
Bruce Allanad680762008-03-28 09:15:03 -07001673 /*
1674 * 80003ES2LAN workaround-- For packet buffer work-around on
Auke Kokbc7f75f2007-09-17 12:30:59 -07001675 * link down event; disable receives here in the ISR and reset
Bruce Allanad680762008-03-28 09:15:03 -07001676 * adapter in watchdog
1677 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001678 if (netif_carrier_ok(netdev) &&
1679 adapter->flags & FLAG_RX_NEEDS_RESTART) {
1680 /* disable receives */
1681 u32 rctl = er32(RCTL);
1682 ew32(RCTL, rctl & ~E1000_RCTL_EN);
Jeff Kirsher318a94d2008-03-28 09:15:16 -07001683 adapter->flags |= FLAG_RX_RESTART_NOW;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001684 }
1685 /* guard against interrupt when we're going down */
1686 if (!test_bit(__E1000_DOWN, &adapter->state))
1687 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1688 }
1689
Ben Hutchings288379f2009-01-19 16:43:59 -08001690 if (napi_schedule_prep(&adapter->napi)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07001691 adapter->total_tx_bytes = 0;
1692 adapter->total_tx_packets = 0;
1693 adapter->total_rx_bytes = 0;
1694 adapter->total_rx_packets = 0;
Ben Hutchings288379f2009-01-19 16:43:59 -08001695 __napi_schedule(&adapter->napi);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001696 }
1697
1698 return IRQ_HANDLED;
1699}
1700
1701/**
1702 * e1000_intr - Interrupt Handler
1703 * @irq: interrupt number
1704 * @data: pointer to a network interface device structure
1705 **/
1706static irqreturn_t e1000_intr(int irq, void *data)
1707{
1708 struct net_device *netdev = data;
1709 struct e1000_adapter *adapter = netdev_priv(netdev);
1710 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001711 u32 rctl, icr = er32(ICR);
Bruce Allan4662e822008-08-26 18:37:06 -07001712
Bruce Allana68ea772009-11-20 23:23:16 +00001713 if (!icr || test_bit(__E1000_DOWN, &adapter->state))
Auke Kokbc7f75f2007-09-17 12:30:59 -07001714 return IRQ_NONE; /* Not our interrupt */
1715
Bruce Allanad680762008-03-28 09:15:03 -07001716 /*
1717 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1718 * not set, then the adapter didn't send an interrupt
1719 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001720 if (!(icr & E1000_ICR_INT_ASSERTED))
1721 return IRQ_NONE;
1722
Bruce Allanad680762008-03-28 09:15:03 -07001723 /*
1724 * Interrupt Auto-Mask...upon reading ICR,
1725 * interrupts are masked. No need for the
1726 * IMC write
1727 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001728
dave graham573cca82009-02-10 12:52:05 +00001729 if (icr & E1000_ICR_LSC) {
Bruce Allanf92518d2012-02-01 11:16:42 +00001730 hw->mac.get_link_status = true;
Bruce Allanad680762008-03-28 09:15:03 -07001731 /*
1732 * ICH8 workaround-- Call gig speed drop workaround on cable
1733 * disconnect (LSC) before accessing any PHY registers
1734 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001735 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1736 (!(er32(STATUS) & E1000_STATUS_LU)))
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07001737 schedule_work(&adapter->downshift_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001738
Bruce Allanad680762008-03-28 09:15:03 -07001739 /*
1740 * 80003ES2LAN workaround--
Auke Kokbc7f75f2007-09-17 12:30:59 -07001741 * For packet buffer work-around on link down event;
1742 * disable receives here in the ISR and
1743 * reset adapter in watchdog
1744 */
1745 if (netif_carrier_ok(netdev) &&
1746 (adapter->flags & FLAG_RX_NEEDS_RESTART)) {
1747 /* disable receives */
1748 rctl = er32(RCTL);
1749 ew32(RCTL, rctl & ~E1000_RCTL_EN);
Jeff Kirsher318a94d2008-03-28 09:15:16 -07001750 adapter->flags |= FLAG_RX_RESTART_NOW;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001751 }
1752 /* guard against interrupt when we're going down */
1753 if (!test_bit(__E1000_DOWN, &adapter->state))
1754 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1755 }
1756
Ben Hutchings288379f2009-01-19 16:43:59 -08001757 if (napi_schedule_prep(&adapter->napi)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07001758 adapter->total_tx_bytes = 0;
1759 adapter->total_tx_packets = 0;
1760 adapter->total_rx_bytes = 0;
1761 adapter->total_rx_packets = 0;
Ben Hutchings288379f2009-01-19 16:43:59 -08001762 __napi_schedule(&adapter->napi);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001763 }
1764
1765 return IRQ_HANDLED;
1766}
1767
Bruce Allan4662e822008-08-26 18:37:06 -07001768static irqreturn_t e1000_msix_other(int irq, void *data)
1769{
1770 struct net_device *netdev = data;
1771 struct e1000_adapter *adapter = netdev_priv(netdev);
1772 struct e1000_hw *hw = &adapter->hw;
1773 u32 icr = er32(ICR);
1774
1775 if (!(icr & E1000_ICR_INT_ASSERTED)) {
Jesse Brandeburga3c69fe2009-03-25 22:05:41 +00001776 if (!test_bit(__E1000_DOWN, &adapter->state))
1777 ew32(IMS, E1000_IMS_OTHER);
Bruce Allan4662e822008-08-26 18:37:06 -07001778 return IRQ_NONE;
1779 }
1780
1781 if (icr & adapter->eiac_mask)
1782 ew32(ICS, (icr & adapter->eiac_mask));
1783
1784 if (icr & E1000_ICR_OTHER) {
1785 if (!(icr & E1000_ICR_LSC))
1786 goto no_link_interrupt;
Bruce Allanf92518d2012-02-01 11:16:42 +00001787 hw->mac.get_link_status = true;
Bruce Allan4662e822008-08-26 18:37:06 -07001788 /* guard against interrupt when we're going down */
1789 if (!test_bit(__E1000_DOWN, &adapter->state))
1790 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1791 }
1792
1793no_link_interrupt:
Jesse Brandeburga3c69fe2009-03-25 22:05:41 +00001794 if (!test_bit(__E1000_DOWN, &adapter->state))
1795 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER);
Bruce Allan4662e822008-08-26 18:37:06 -07001796
1797 return IRQ_HANDLED;
1798}
1799
1800
1801static irqreturn_t e1000_intr_msix_tx(int irq, void *data)
1802{
1803 struct net_device *netdev = data;
1804 struct e1000_adapter *adapter = netdev_priv(netdev);
1805 struct e1000_hw *hw = &adapter->hw;
1806 struct e1000_ring *tx_ring = adapter->tx_ring;
1807
1808
1809 adapter->total_tx_bytes = 0;
1810 adapter->total_tx_packets = 0;
1811
Bruce Allan55aa6982011-12-16 00:45:45 +00001812 if (!e1000_clean_tx_irq(tx_ring))
Bruce Allan4662e822008-08-26 18:37:06 -07001813 /* Ring was not completely cleaned, so fire another interrupt */
1814 ew32(ICS, tx_ring->ims_val);
1815
1816 return IRQ_HANDLED;
1817}
1818
1819static irqreturn_t e1000_intr_msix_rx(int irq, void *data)
1820{
1821 struct net_device *netdev = data;
1822 struct e1000_adapter *adapter = netdev_priv(netdev);
Bruce Allan55aa6982011-12-16 00:45:45 +00001823 struct e1000_ring *rx_ring = adapter->rx_ring;
Bruce Allan4662e822008-08-26 18:37:06 -07001824
1825 /* Write the ITR value calculated at the end of the
1826 * previous interrupt.
1827 */
Bruce Allan55aa6982011-12-16 00:45:45 +00001828 if (rx_ring->set_itr) {
1829 writel(1000000000 / (rx_ring->itr_val * 256),
1830 rx_ring->itr_register);
1831 rx_ring->set_itr = 0;
Bruce Allan4662e822008-08-26 18:37:06 -07001832 }
1833
Ben Hutchings288379f2009-01-19 16:43:59 -08001834 if (napi_schedule_prep(&adapter->napi)) {
Bruce Allan4662e822008-08-26 18:37:06 -07001835 adapter->total_rx_bytes = 0;
1836 adapter->total_rx_packets = 0;
Ben Hutchings288379f2009-01-19 16:43:59 -08001837 __napi_schedule(&adapter->napi);
Bruce Allan4662e822008-08-26 18:37:06 -07001838 }
1839 return IRQ_HANDLED;
1840}
1841
1842/**
1843 * e1000_configure_msix - Configure MSI-X hardware
1844 *
1845 * e1000_configure_msix sets up the hardware to properly
1846 * generate MSI-X interrupts.
1847 **/
1848static void e1000_configure_msix(struct e1000_adapter *adapter)
1849{
1850 struct e1000_hw *hw = &adapter->hw;
1851 struct e1000_ring *rx_ring = adapter->rx_ring;
1852 struct e1000_ring *tx_ring = adapter->tx_ring;
1853 int vector = 0;
1854 u32 ctrl_ext, ivar = 0;
1855
1856 adapter->eiac_mask = 0;
1857
1858 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1859 if (hw->mac.type == e1000_82574) {
1860 u32 rfctl = er32(RFCTL);
1861 rfctl |= E1000_RFCTL_ACK_DIS;
1862 ew32(RFCTL, rfctl);
1863 }
1864
1865#define E1000_IVAR_INT_ALLOC_VALID 0x8
1866 /* Configure Rx vector */
1867 rx_ring->ims_val = E1000_IMS_RXQ0;
1868 adapter->eiac_mask |= rx_ring->ims_val;
1869 if (rx_ring->itr_val)
1870 writel(1000000000 / (rx_ring->itr_val * 256),
Bruce Allanc5083cf2011-12-16 00:45:40 +00001871 rx_ring->itr_register);
Bruce Allan4662e822008-08-26 18:37:06 -07001872 else
Bruce Allanc5083cf2011-12-16 00:45:40 +00001873 writel(1, rx_ring->itr_register);
Bruce Allan4662e822008-08-26 18:37:06 -07001874 ivar = E1000_IVAR_INT_ALLOC_VALID | vector;
1875
1876 /* Configure Tx vector */
1877 tx_ring->ims_val = E1000_IMS_TXQ0;
1878 vector++;
1879 if (tx_ring->itr_val)
1880 writel(1000000000 / (tx_ring->itr_val * 256),
Bruce Allanc5083cf2011-12-16 00:45:40 +00001881 tx_ring->itr_register);
Bruce Allan4662e822008-08-26 18:37:06 -07001882 else
Bruce Allanc5083cf2011-12-16 00:45:40 +00001883 writel(1, tx_ring->itr_register);
Bruce Allan4662e822008-08-26 18:37:06 -07001884 adapter->eiac_mask |= tx_ring->ims_val;
1885 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8);
1886
1887 /* set vector for Other Causes, e.g. link changes */
1888 vector++;
1889 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16);
1890 if (rx_ring->itr_val)
1891 writel(1000000000 / (rx_ring->itr_val * 256),
1892 hw->hw_addr + E1000_EITR_82574(vector));
1893 else
1894 writel(1, hw->hw_addr + E1000_EITR_82574(vector));
1895
1896 /* Cause Tx interrupts on every write back */
1897 ivar |= (1 << 31);
1898
1899 ew32(IVAR, ivar);
1900
1901 /* enable MSI-X PBA support */
1902 ctrl_ext = er32(CTRL_EXT);
1903 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR;
1904
1905 /* Auto-Mask Other interrupts upon ICR read */
1906#define E1000_EIAC_MASK_82574 0x01F00000
1907 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER);
1908 ctrl_ext |= E1000_CTRL_EXT_EIAME;
1909 ew32(CTRL_EXT, ctrl_ext);
1910 e1e_flush();
1911}
1912
1913void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter)
1914{
1915 if (adapter->msix_entries) {
1916 pci_disable_msix(adapter->pdev);
1917 kfree(adapter->msix_entries);
1918 adapter->msix_entries = NULL;
1919 } else if (adapter->flags & FLAG_MSI_ENABLED) {
1920 pci_disable_msi(adapter->pdev);
1921 adapter->flags &= ~FLAG_MSI_ENABLED;
1922 }
Bruce Allan4662e822008-08-26 18:37:06 -07001923}
1924
1925/**
1926 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1927 *
1928 * Attempt to configure interrupts using the best available
1929 * capabilities of the hardware and kernel.
1930 **/
1931void e1000e_set_interrupt_capability(struct e1000_adapter *adapter)
1932{
1933 int err;
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00001934 int i;
Bruce Allan4662e822008-08-26 18:37:06 -07001935
1936 switch (adapter->int_mode) {
1937 case E1000E_INT_MODE_MSIX:
1938 if (adapter->flags & FLAG_HAS_MSIX) {
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00001939 adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */
1940 adapter->msix_entries = kcalloc(adapter->num_vectors,
Bruce Allan4662e822008-08-26 18:37:06 -07001941 sizeof(struct msix_entry),
1942 GFP_KERNEL);
1943 if (adapter->msix_entries) {
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00001944 for (i = 0; i < adapter->num_vectors; i++)
Bruce Allan4662e822008-08-26 18:37:06 -07001945 adapter->msix_entries[i].entry = i;
1946
1947 err = pci_enable_msix(adapter->pdev,
1948 adapter->msix_entries,
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00001949 adapter->num_vectors);
Bruce Allanb1cdfea2010-12-11 05:53:47 +00001950 if (err == 0)
Bruce Allan4662e822008-08-26 18:37:06 -07001951 return;
1952 }
1953 /* MSI-X failed, so fall through and try MSI */
Jeff Kirsheref456f82011-11-03 11:40:28 +00001954 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n");
Bruce Allan4662e822008-08-26 18:37:06 -07001955 e1000e_reset_interrupt_capability(adapter);
1956 }
1957 adapter->int_mode = E1000E_INT_MODE_MSI;
1958 /* Fall through */
1959 case E1000E_INT_MODE_MSI:
1960 if (!pci_enable_msi(adapter->pdev)) {
1961 adapter->flags |= FLAG_MSI_ENABLED;
1962 } else {
1963 adapter->int_mode = E1000E_INT_MODE_LEGACY;
Jeff Kirsheref456f82011-11-03 11:40:28 +00001964 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n");
Bruce Allan4662e822008-08-26 18:37:06 -07001965 }
1966 /* Fall through */
1967 case E1000E_INT_MODE_LEGACY:
1968 /* Don't do anything; this is the system default */
1969 break;
1970 }
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00001971
1972 /* store the number of vectors being used */
1973 adapter->num_vectors = 1;
Bruce Allan4662e822008-08-26 18:37:06 -07001974}
1975
1976/**
1977 * e1000_request_msix - Initialize MSI-X interrupts
1978 *
1979 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1980 * kernel.
1981 **/
1982static int e1000_request_msix(struct e1000_adapter *adapter)
1983{
1984 struct net_device *netdev = adapter->netdev;
1985 int err = 0, vector = 0;
1986
1987 if (strlen(netdev->name) < (IFNAMSIZ - 5))
Bruce Allan79f5e842011-01-19 04:20:59 +00001988 snprintf(adapter->rx_ring->name,
1989 sizeof(adapter->rx_ring->name) - 1,
1990 "%s-rx-0", netdev->name);
Bruce Allan4662e822008-08-26 18:37:06 -07001991 else
1992 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
1993 err = request_irq(adapter->msix_entries[vector].vector,
Joe Perchesa0607fd2009-11-18 23:29:17 -08001994 e1000_intr_msix_rx, 0, adapter->rx_ring->name,
Bruce Allan4662e822008-08-26 18:37:06 -07001995 netdev);
1996 if (err)
Bruce Allan5015e532012-02-08 02:55:56 +00001997 return err;
Bruce Allanc5083cf2011-12-16 00:45:40 +00001998 adapter->rx_ring->itr_register = adapter->hw.hw_addr +
1999 E1000_EITR_82574(vector);
Bruce Allan4662e822008-08-26 18:37:06 -07002000 adapter->rx_ring->itr_val = adapter->itr;
2001 vector++;
2002
2003 if (strlen(netdev->name) < (IFNAMSIZ - 5))
Bruce Allan79f5e842011-01-19 04:20:59 +00002004 snprintf(adapter->tx_ring->name,
2005 sizeof(adapter->tx_ring->name) - 1,
2006 "%s-tx-0", netdev->name);
Bruce Allan4662e822008-08-26 18:37:06 -07002007 else
2008 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
2009 err = request_irq(adapter->msix_entries[vector].vector,
Joe Perchesa0607fd2009-11-18 23:29:17 -08002010 e1000_intr_msix_tx, 0, adapter->tx_ring->name,
Bruce Allan4662e822008-08-26 18:37:06 -07002011 netdev);
2012 if (err)
Bruce Allan5015e532012-02-08 02:55:56 +00002013 return err;
Bruce Allanc5083cf2011-12-16 00:45:40 +00002014 adapter->tx_ring->itr_register = adapter->hw.hw_addr +
2015 E1000_EITR_82574(vector);
Bruce Allan4662e822008-08-26 18:37:06 -07002016 adapter->tx_ring->itr_val = adapter->itr;
2017 vector++;
2018
2019 err = request_irq(adapter->msix_entries[vector].vector,
Joe Perchesa0607fd2009-11-18 23:29:17 -08002020 e1000_msix_other, 0, netdev->name, netdev);
Bruce Allan4662e822008-08-26 18:37:06 -07002021 if (err)
Bruce Allan5015e532012-02-08 02:55:56 +00002022 return err;
Bruce Allan4662e822008-08-26 18:37:06 -07002023
2024 e1000_configure_msix(adapter);
Bruce Allan5015e532012-02-08 02:55:56 +00002025
Bruce Allan4662e822008-08-26 18:37:06 -07002026 return 0;
Bruce Allan4662e822008-08-26 18:37:06 -07002027}
2028
Bruce Allanf8d59f72008-08-08 18:36:11 -07002029/**
2030 * e1000_request_irq - initialize interrupts
2031 *
2032 * Attempts to configure interrupts using the best available
2033 * capabilities of the hardware and kernel.
2034 **/
Auke Kokbc7f75f2007-09-17 12:30:59 -07002035static int e1000_request_irq(struct e1000_adapter *adapter)
2036{
2037 struct net_device *netdev = adapter->netdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002038 int err;
2039
Bruce Allan4662e822008-08-26 18:37:06 -07002040 if (adapter->msix_entries) {
2041 err = e1000_request_msix(adapter);
2042 if (!err)
2043 return err;
2044 /* fall back to MSI */
2045 e1000e_reset_interrupt_capability(adapter);
2046 adapter->int_mode = E1000E_INT_MODE_MSI;
2047 e1000e_set_interrupt_capability(adapter);
2048 }
2049 if (adapter->flags & FLAG_MSI_ENABLED) {
Joe Perchesa0607fd2009-11-18 23:29:17 -08002050 err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0,
Bruce Allan4662e822008-08-26 18:37:06 -07002051 netdev->name, netdev);
2052 if (!err)
2053 return err;
2054
2055 /* fall back to legacy interrupt */
2056 e1000e_reset_interrupt_capability(adapter);
2057 adapter->int_mode = E1000E_INT_MODE_LEGACY;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002058 }
2059
Joe Perchesa0607fd2009-11-18 23:29:17 -08002060 err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED,
Bruce Allan4662e822008-08-26 18:37:06 -07002061 netdev->name, netdev);
2062 if (err)
Bruce Allanf8d59f72008-08-08 18:36:11 -07002063 e_err("Unable to allocate interrupt, Error: %d\n", err);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002064
2065 return err;
2066}
2067
2068static void e1000_free_irq(struct e1000_adapter *adapter)
2069{
2070 struct net_device *netdev = adapter->netdev;
2071
Bruce Allan4662e822008-08-26 18:37:06 -07002072 if (adapter->msix_entries) {
2073 int vector = 0;
2074
2075 free_irq(adapter->msix_entries[vector].vector, netdev);
2076 vector++;
2077
2078 free_irq(adapter->msix_entries[vector].vector, netdev);
2079 vector++;
2080
2081 /* Other Causes interrupt vector */
2082 free_irq(adapter->msix_entries[vector].vector, netdev);
2083 return;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002084 }
Bruce Allan4662e822008-08-26 18:37:06 -07002085
2086 free_irq(adapter->pdev->irq, netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002087}
2088
2089/**
2090 * e1000_irq_disable - Mask off interrupt generation on the NIC
2091 **/
2092static void e1000_irq_disable(struct e1000_adapter *adapter)
2093{
2094 struct e1000_hw *hw = &adapter->hw;
2095
Auke Kokbc7f75f2007-09-17 12:30:59 -07002096 ew32(IMC, ~0);
Bruce Allan4662e822008-08-26 18:37:06 -07002097 if (adapter->msix_entries)
2098 ew32(EIAC_82574, 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002099 e1e_flush();
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00002100
2101 if (adapter->msix_entries) {
2102 int i;
2103 for (i = 0; i < adapter->num_vectors; i++)
2104 synchronize_irq(adapter->msix_entries[i].vector);
2105 } else {
2106 synchronize_irq(adapter->pdev->irq);
2107 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07002108}
2109
2110/**
2111 * e1000_irq_enable - Enable default interrupt generation settings
2112 **/
2113static void e1000_irq_enable(struct e1000_adapter *adapter)
2114{
2115 struct e1000_hw *hw = &adapter->hw;
2116
Bruce Allan4662e822008-08-26 18:37:06 -07002117 if (adapter->msix_entries) {
2118 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574);
2119 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC);
2120 } else {
2121 ew32(IMS, IMS_ENABLE_MASK);
2122 }
Jesse Brandeburg74ef9c32008-03-21 11:06:52 -07002123 e1e_flush();
Auke Kokbc7f75f2007-09-17 12:30:59 -07002124}
2125
2126/**
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002127 * e1000e_get_hw_control - get control of the h/w from f/w
Auke Kokbc7f75f2007-09-17 12:30:59 -07002128 * @adapter: address of board private structure
2129 *
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002130 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
Auke Kokbc7f75f2007-09-17 12:30:59 -07002131 * For ASF and Pass Through versions of f/w this means that
2132 * the driver is loaded. For AMT version (only with 82573)
2133 * of the f/w this means that the network i/f is open.
2134 **/
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002135void e1000e_get_hw_control(struct e1000_adapter *adapter)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002136{
2137 struct e1000_hw *hw = &adapter->hw;
2138 u32 ctrl_ext;
2139 u32 swsm;
2140
2141 /* Let firmware know the driver has taken over */
2142 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
2143 swsm = er32(SWSM);
2144 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
2145 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
2146 ctrl_ext = er32(CTRL_EXT);
Bruce Allanad680762008-03-28 09:15:03 -07002147 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002148 }
2149}
2150
2151/**
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002152 * e1000e_release_hw_control - release control of the h/w to f/w
Auke Kokbc7f75f2007-09-17 12:30:59 -07002153 * @adapter: address of board private structure
2154 *
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002155 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
Auke Kokbc7f75f2007-09-17 12:30:59 -07002156 * For ASF and Pass Through versions of f/w this means that the
2157 * driver is no longer loaded. For AMT version (only with 82573) i
2158 * of the f/w this means that the network i/f is closed.
2159 *
2160 **/
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002161void e1000e_release_hw_control(struct e1000_adapter *adapter)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002162{
2163 struct e1000_hw *hw = &adapter->hw;
2164 u32 ctrl_ext;
2165 u32 swsm;
2166
2167 /* Let firmware taken over control of h/w */
2168 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
2169 swsm = er32(SWSM);
2170 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
2171 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
2172 ctrl_ext = er32(CTRL_EXT);
Bruce Allanad680762008-03-28 09:15:03 -07002173 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002174 }
2175}
2176
Auke Kokbc7f75f2007-09-17 12:30:59 -07002177/**
Ben Hutchings49ce9c22012-07-10 10:56:00 +00002178 * e1000_alloc_ring_dma - allocate memory for a ring structure
Auke Kokbc7f75f2007-09-17 12:30:59 -07002179 **/
2180static int e1000_alloc_ring_dma(struct e1000_adapter *adapter,
2181 struct e1000_ring *ring)
2182{
2183 struct pci_dev *pdev = adapter->pdev;
2184
2185 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma,
2186 GFP_KERNEL);
2187 if (!ring->desc)
2188 return -ENOMEM;
2189
2190 return 0;
2191}
2192
2193/**
2194 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
Bruce Allan55aa6982011-12-16 00:45:45 +00002195 * @tx_ring: Tx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07002196 *
2197 * Return 0 on success, negative on failure
2198 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00002199int e1000e_setup_tx_resources(struct e1000_ring *tx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002200{
Bruce Allan55aa6982011-12-16 00:45:45 +00002201 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002202 int err = -ENOMEM, size;
2203
2204 size = sizeof(struct e1000_buffer) * tx_ring->count;
Eric Dumazet89bf67f2010-11-22 00:15:06 +00002205 tx_ring->buffer_info = vzalloc(size);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002206 if (!tx_ring->buffer_info)
2207 goto err;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002208
2209 /* round up to nearest 4K */
2210 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
2211 tx_ring->size = ALIGN(tx_ring->size, 4096);
2212
2213 err = e1000_alloc_ring_dma(adapter, tx_ring);
2214 if (err)
2215 goto err;
2216
2217 tx_ring->next_to_use = 0;
2218 tx_ring->next_to_clean = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002219
2220 return 0;
2221err:
2222 vfree(tx_ring->buffer_info);
Jeff Kirsher44defeb2008-08-04 17:20:41 -07002223 e_err("Unable to allocate memory for the transmit descriptor ring\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07002224 return err;
2225}
2226
2227/**
2228 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
Bruce Allan55aa6982011-12-16 00:45:45 +00002229 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07002230 *
2231 * Returns 0 on success, negative on failure
2232 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00002233int e1000e_setup_rx_resources(struct e1000_ring *rx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002234{
Bruce Allan55aa6982011-12-16 00:45:45 +00002235 struct e1000_adapter *adapter = rx_ring->adapter;
Auke Kok47f44e42007-10-25 13:57:44 -07002236 struct e1000_buffer *buffer_info;
2237 int i, size, desc_len, err = -ENOMEM;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002238
2239 size = sizeof(struct e1000_buffer) * rx_ring->count;
Eric Dumazet89bf67f2010-11-22 00:15:06 +00002240 rx_ring->buffer_info = vzalloc(size);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002241 if (!rx_ring->buffer_info)
2242 goto err;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002243
Auke Kok47f44e42007-10-25 13:57:44 -07002244 for (i = 0; i < rx_ring->count; i++) {
2245 buffer_info = &rx_ring->buffer_info[i];
2246 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS,
2247 sizeof(struct e1000_ps_page),
2248 GFP_KERNEL);
2249 if (!buffer_info->ps_pages)
2250 goto err_pages;
2251 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07002252
2253 desc_len = sizeof(union e1000_rx_desc_packet_split);
2254
2255 /* Round up to nearest 4K */
2256 rx_ring->size = rx_ring->count * desc_len;
2257 rx_ring->size = ALIGN(rx_ring->size, 4096);
2258
2259 err = e1000_alloc_ring_dma(adapter, rx_ring);
2260 if (err)
Auke Kok47f44e42007-10-25 13:57:44 -07002261 goto err_pages;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002262
2263 rx_ring->next_to_clean = 0;
2264 rx_ring->next_to_use = 0;
2265 rx_ring->rx_skb_top = NULL;
2266
2267 return 0;
Auke Kok47f44e42007-10-25 13:57:44 -07002268
2269err_pages:
2270 for (i = 0; i < rx_ring->count; i++) {
2271 buffer_info = &rx_ring->buffer_info[i];
2272 kfree(buffer_info->ps_pages);
2273 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07002274err:
2275 vfree(rx_ring->buffer_info);
Bruce Allane9262442010-11-24 06:02:06 +00002276 e_err("Unable to allocate memory for the receive descriptor ring\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07002277 return err;
2278}
2279
2280/**
2281 * e1000_clean_tx_ring - Free Tx Buffers
Bruce Allan55aa6982011-12-16 00:45:45 +00002282 * @tx_ring: Tx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07002283 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00002284static void e1000_clean_tx_ring(struct e1000_ring *tx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002285{
Bruce Allan55aa6982011-12-16 00:45:45 +00002286 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002287 struct e1000_buffer *buffer_info;
2288 unsigned long size;
2289 unsigned int i;
2290
2291 for (i = 0; i < tx_ring->count; i++) {
2292 buffer_info = &tx_ring->buffer_info[i];
Bruce Allan55aa6982011-12-16 00:45:45 +00002293 e1000_put_txbuf(tx_ring, buffer_info);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002294 }
2295
Tom Herbert3f0cfa32011-11-28 16:33:16 +00002296 netdev_reset_queue(adapter->netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002297 size = sizeof(struct e1000_buffer) * tx_ring->count;
2298 memset(tx_ring->buffer_info, 0, size);
2299
2300 memset(tx_ring->desc, 0, tx_ring->size);
2301
2302 tx_ring->next_to_use = 0;
2303 tx_ring->next_to_clean = 0;
2304
Bruce Allanc5083cf2011-12-16 00:45:40 +00002305 writel(0, tx_ring->head);
Bruce Allanbdc125f2012-03-20 03:47:52 +00002306 if (tx_ring->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
2307 e1000e_update_tdt_wa(tx_ring, 0);
2308 else
2309 writel(0, tx_ring->tail);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002310}
2311
2312/**
2313 * e1000e_free_tx_resources - Free Tx Resources per Queue
Bruce Allan55aa6982011-12-16 00:45:45 +00002314 * @tx_ring: Tx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07002315 *
2316 * Free all transmit software resources
2317 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00002318void e1000e_free_tx_resources(struct e1000_ring *tx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002319{
Bruce Allan55aa6982011-12-16 00:45:45 +00002320 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002321 struct pci_dev *pdev = adapter->pdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002322
Bruce Allan55aa6982011-12-16 00:45:45 +00002323 e1000_clean_tx_ring(tx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002324
2325 vfree(tx_ring->buffer_info);
2326 tx_ring->buffer_info = NULL;
2327
2328 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
2329 tx_ring->dma);
2330 tx_ring->desc = NULL;
2331}
2332
2333/**
2334 * e1000e_free_rx_resources - Free Rx Resources
Bruce Allan55aa6982011-12-16 00:45:45 +00002335 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07002336 *
2337 * Free all receive software resources
2338 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00002339void e1000e_free_rx_resources(struct e1000_ring *rx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002340{
Bruce Allan55aa6982011-12-16 00:45:45 +00002341 struct e1000_adapter *adapter = rx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002342 struct pci_dev *pdev = adapter->pdev;
Auke Kok47f44e42007-10-25 13:57:44 -07002343 int i;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002344
Bruce Allan55aa6982011-12-16 00:45:45 +00002345 e1000_clean_rx_ring(rx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002346
Bruce Allanb1cdfea2010-12-11 05:53:47 +00002347 for (i = 0; i < rx_ring->count; i++)
Auke Kok47f44e42007-10-25 13:57:44 -07002348 kfree(rx_ring->buffer_info[i].ps_pages);
Auke Kok47f44e42007-10-25 13:57:44 -07002349
Auke Kokbc7f75f2007-09-17 12:30:59 -07002350 vfree(rx_ring->buffer_info);
2351 rx_ring->buffer_info = NULL;
2352
Auke Kokbc7f75f2007-09-17 12:30:59 -07002353 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
2354 rx_ring->dma);
2355 rx_ring->desc = NULL;
2356}
2357
2358/**
2359 * e1000_update_itr - update the dynamic ITR value based on statistics
Auke Kok489815c2008-02-21 15:11:07 -08002360 * @adapter: pointer to adapter
2361 * @itr_setting: current adapter->itr
2362 * @packets: the number of packets during this measurement interval
2363 * @bytes: the number of bytes during this measurement interval
2364 *
Auke Kokbc7f75f2007-09-17 12:30:59 -07002365 * Stores a new ITR value based on packets and byte
2366 * counts during the last interrupt. The advantage of per interrupt
2367 * computation is faster updates and more accurate ITR for the current
2368 * traffic pattern. Constants in this function were computed
2369 * based on theoretical maximum wire speed and thresholds were set based
2370 * on testing data as well as attempting to minimize response time
Bruce Allan4662e822008-08-26 18:37:06 -07002371 * while increasing bulk throughput. This functionality is controlled
2372 * by the InterruptThrottleRate module parameter.
Auke Kokbc7f75f2007-09-17 12:30:59 -07002373 **/
2374static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
2375 u16 itr_setting, int packets,
2376 int bytes)
2377{
2378 unsigned int retval = itr_setting;
2379
2380 if (packets == 0)
Bruce Allan5015e532012-02-08 02:55:56 +00002381 return itr_setting;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002382
2383 switch (itr_setting) {
2384 case lowest_latency:
2385 /* handle TSO and jumbo frames */
2386 if (bytes/packets > 8000)
2387 retval = bulk_latency;
Bruce Allanb1cdfea2010-12-11 05:53:47 +00002388 else if ((packets < 5) && (bytes > 512))
Auke Kokbc7f75f2007-09-17 12:30:59 -07002389 retval = low_latency;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002390 break;
2391 case low_latency: /* 50 usec aka 20000 ints/s */
2392 if (bytes > 10000) {
2393 /* this if handles the TSO accounting */
Bruce Allanb1cdfea2010-12-11 05:53:47 +00002394 if (bytes/packets > 8000)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002395 retval = bulk_latency;
Bruce Allanb1cdfea2010-12-11 05:53:47 +00002396 else if ((packets < 10) || ((bytes/packets) > 1200))
Auke Kokbc7f75f2007-09-17 12:30:59 -07002397 retval = bulk_latency;
Bruce Allanb1cdfea2010-12-11 05:53:47 +00002398 else if ((packets > 35))
Auke Kokbc7f75f2007-09-17 12:30:59 -07002399 retval = lowest_latency;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002400 } else if (bytes/packets > 2000) {
2401 retval = bulk_latency;
2402 } else if (packets <= 2 && bytes < 512) {
2403 retval = lowest_latency;
2404 }
2405 break;
2406 case bulk_latency: /* 250 usec aka 4000 ints/s */
2407 if (bytes > 25000) {
Bruce Allanb1cdfea2010-12-11 05:53:47 +00002408 if (packets > 35)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002409 retval = low_latency;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002410 } else if (bytes < 6000) {
2411 retval = low_latency;
2412 }
2413 break;
2414 }
2415
Auke Kokbc7f75f2007-09-17 12:30:59 -07002416 return retval;
2417}
2418
2419static void e1000_set_itr(struct e1000_adapter *adapter)
2420{
2421 struct e1000_hw *hw = &adapter->hw;
2422 u16 current_itr;
2423 u32 new_itr = adapter->itr;
2424
2425 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2426 if (adapter->link_speed != SPEED_1000) {
2427 current_itr = 0;
2428 new_itr = 4000;
2429 goto set_itr_now;
2430 }
2431
Bruce Allan828bac82010-09-29 21:39:37 +00002432 if (adapter->flags2 & FLAG2_DISABLE_AIM) {
2433 new_itr = 0;
2434 goto set_itr_now;
2435 }
2436
Auke Kokbc7f75f2007-09-17 12:30:59 -07002437 adapter->tx_itr = e1000_update_itr(adapter,
2438 adapter->tx_itr,
2439 adapter->total_tx_packets,
2440 adapter->total_tx_bytes);
2441 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2442 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
2443 adapter->tx_itr = low_latency;
2444
2445 adapter->rx_itr = e1000_update_itr(adapter,
2446 adapter->rx_itr,
2447 adapter->total_rx_packets,
2448 adapter->total_rx_bytes);
2449 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2450 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
2451 adapter->rx_itr = low_latency;
2452
2453 current_itr = max(adapter->rx_itr, adapter->tx_itr);
2454
2455 switch (current_itr) {
2456 /* counts and packets in update_itr are dependent on these numbers */
2457 case lowest_latency:
2458 new_itr = 70000;
2459 break;
2460 case low_latency:
2461 new_itr = 20000; /* aka hwitr = ~200 */
2462 break;
2463 case bulk_latency:
2464 new_itr = 4000;
2465 break;
2466 default:
2467 break;
2468 }
2469
2470set_itr_now:
2471 if (new_itr != adapter->itr) {
Bruce Allanad680762008-03-28 09:15:03 -07002472 /*
2473 * this attempts to bias the interrupt rate towards Bulk
Auke Kokbc7f75f2007-09-17 12:30:59 -07002474 * by adding intermediate steps when interrupt rate is
Bruce Allanad680762008-03-28 09:15:03 -07002475 * increasing
2476 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002477 new_itr = new_itr > adapter->itr ?
2478 min(adapter->itr + (new_itr >> 2), new_itr) :
2479 new_itr;
2480 adapter->itr = new_itr;
Bruce Allan4662e822008-08-26 18:37:06 -07002481 adapter->rx_ring->itr_val = new_itr;
2482 if (adapter->msix_entries)
2483 adapter->rx_ring->set_itr = 1;
2484 else
Bruce Allan828bac82010-09-29 21:39:37 +00002485 if (new_itr)
2486 ew32(ITR, 1000000000 / (new_itr * 256));
2487 else
2488 ew32(ITR, 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002489 }
2490}
2491
2492/**
Matthew Vick22a4cca2012-07-12 00:02:42 +00002493 * e1000e_write_itr - write the ITR value to the appropriate registers
2494 * @adapter: address of board private structure
2495 * @itr: new ITR value to program
2496 *
2497 * e1000e_write_itr determines if the adapter is in MSI-X mode
2498 * and, if so, writes the EITR registers with the ITR value.
2499 * Otherwise, it writes the ITR value into the ITR register.
2500 **/
2501void e1000e_write_itr(struct e1000_adapter *adapter, u32 itr)
2502{
2503 struct e1000_hw *hw = &adapter->hw;
2504 u32 new_itr = itr ? 1000000000 / (itr * 256) : 0;
2505
2506 if (adapter->msix_entries) {
2507 int vector;
2508
2509 for (vector = 0; vector < adapter->num_vectors; vector++)
2510 writel(new_itr, hw->hw_addr + E1000_EITR_82574(vector));
2511 } else {
2512 ew32(ITR, new_itr);
2513 }
2514}
2515
2516/**
Bruce Allan4662e822008-08-26 18:37:06 -07002517 * e1000_alloc_queues - Allocate memory for all rings
2518 * @adapter: board private structure to initialize
2519 **/
2520static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter)
2521{
Bruce Allan55aa6982011-12-16 00:45:45 +00002522 int size = sizeof(struct e1000_ring);
2523
2524 adapter->tx_ring = kzalloc(size, GFP_KERNEL);
Bruce Allan4662e822008-08-26 18:37:06 -07002525 if (!adapter->tx_ring)
2526 goto err;
Bruce Allan55aa6982011-12-16 00:45:45 +00002527 adapter->tx_ring->count = adapter->tx_ring_count;
2528 adapter->tx_ring->adapter = adapter;
Bruce Allan4662e822008-08-26 18:37:06 -07002529
Bruce Allan55aa6982011-12-16 00:45:45 +00002530 adapter->rx_ring = kzalloc(size, GFP_KERNEL);
Bruce Allan4662e822008-08-26 18:37:06 -07002531 if (!adapter->rx_ring)
2532 goto err;
Bruce Allan55aa6982011-12-16 00:45:45 +00002533 adapter->rx_ring->count = adapter->rx_ring_count;
2534 adapter->rx_ring->adapter = adapter;
Bruce Allan4662e822008-08-26 18:37:06 -07002535
2536 return 0;
2537err:
2538 e_err("Unable to allocate memory for queues\n");
2539 kfree(adapter->rx_ring);
2540 kfree(adapter->tx_ring);
2541 return -ENOMEM;
2542}
2543
2544/**
Bruce Allanc58c8a72012-03-20 03:48:19 +00002545 * e1000e_poll - NAPI Rx polling callback
Bruce Allanad680762008-03-28 09:15:03 -07002546 * @napi: struct associated with this polling callback
Bruce Allanc58c8a72012-03-20 03:48:19 +00002547 * @weight: number of packets driver is allowed to process this poll
Auke Kokbc7f75f2007-09-17 12:30:59 -07002548 **/
Bruce Allanc58c8a72012-03-20 03:48:19 +00002549static int e1000e_poll(struct napi_struct *napi, int weight)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002550{
Bruce Allanc58c8a72012-03-20 03:48:19 +00002551 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter,
2552 napi);
Bruce Allan4662e822008-08-26 18:37:06 -07002553 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002554 struct net_device *poll_dev = adapter->netdev;
Andy Gospodarek679e8a02009-06-18 11:57:37 +00002555 int tx_cleaned = 1, work_done = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002556
Wang Chen4cf16532008-11-12 23:38:14 -08002557 adapter = netdev_priv(poll_dev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002558
Bruce Allanc58c8a72012-03-20 03:48:19 +00002559 if (!adapter->msix_entries ||
2560 (adapter->rx_ring->ims_val & adapter->tx_ring->ims_val))
2561 tx_cleaned = e1000_clean_tx_irq(adapter->tx_ring);
Bruce Allan4662e822008-08-26 18:37:06 -07002562
Bruce Allanc58c8a72012-03-20 03:48:19 +00002563 adapter->clean_rx(adapter->rx_ring, &work_done, weight);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002564
Alexander Duyck12d04a32009-03-25 22:05:03 +00002565 if (!tx_cleaned)
Bruce Allanc58c8a72012-03-20 03:48:19 +00002566 work_done = weight;
David S. Millerd2c7ddd2008-01-15 22:43:24 -08002567
Bruce Allanc58c8a72012-03-20 03:48:19 +00002568 /* If weight not fully consumed, exit the polling mode */
2569 if (work_done < weight) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07002570 if (adapter->itr_setting & 3)
2571 e1000_set_itr(adapter);
Ben Hutchings288379f2009-01-19 16:43:59 -08002572 napi_complete(napi);
Jesse Brandeburga3c69fe2009-03-25 22:05:41 +00002573 if (!test_bit(__E1000_DOWN, &adapter->state)) {
2574 if (adapter->msix_entries)
2575 ew32(IMS, adapter->rx_ring->ims_val);
2576 else
2577 e1000_irq_enable(adapter);
2578 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07002579 }
2580
2581 return work_done;
2582}
2583
Jiri Pirko8e586132011-12-08 19:52:37 -05002584static int e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002585{
2586 struct e1000_adapter *adapter = netdev_priv(netdev);
2587 struct e1000_hw *hw = &adapter->hw;
2588 u32 vfta, index;
2589
2590 /* don't update vlan cookie if already programmed */
2591 if ((adapter->hw.mng_cookie.status &
2592 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2593 (vid == adapter->mng_vlan_id))
Jiri Pirko8e586132011-12-08 19:52:37 -05002594 return 0;
Bruce Allancaaddaf2009-12-01 15:46:43 +00002595
Auke Kokbc7f75f2007-09-17 12:30:59 -07002596 /* add VID to filter table */
Bruce Allancaaddaf2009-12-01 15:46:43 +00002597 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2598 index = (vid >> 5) & 0x7F;
2599 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2600 vfta |= (1 << (vid & 0x1F));
2601 hw->mac.ops.write_vfta(hw, index, vfta);
2602 }
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002603
2604 set_bit(vid, adapter->active_vlans);
Jiri Pirko8e586132011-12-08 19:52:37 -05002605
2606 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002607}
2608
Jiri Pirko8e586132011-12-08 19:52:37 -05002609static int e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002610{
2611 struct e1000_adapter *adapter = netdev_priv(netdev);
2612 struct e1000_hw *hw = &adapter->hw;
2613 u32 vfta, index;
2614
Auke Kokbc7f75f2007-09-17 12:30:59 -07002615 if ((adapter->hw.mng_cookie.status &
2616 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2617 (vid == adapter->mng_vlan_id)) {
2618 /* release control to f/w */
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002619 e1000e_release_hw_control(adapter);
Jiri Pirko8e586132011-12-08 19:52:37 -05002620 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002621 }
2622
2623 /* remove VID from filter table */
Bruce Allancaaddaf2009-12-01 15:46:43 +00002624 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2625 index = (vid >> 5) & 0x7F;
2626 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2627 vfta &= ~(1 << (vid & 0x1F));
2628 hw->mac.ops.write_vfta(hw, index, vfta);
2629 }
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002630
2631 clear_bit(vid, adapter->active_vlans);
Jiri Pirko8e586132011-12-08 19:52:37 -05002632
2633 return 0;
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002634}
2635
2636/**
2637 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
2638 * @adapter: board private structure to initialize
2639 **/
2640static void e1000e_vlan_filter_disable(struct e1000_adapter *adapter)
2641{
2642 struct net_device *netdev = adapter->netdev;
2643 struct e1000_hw *hw = &adapter->hw;
2644 u32 rctl;
2645
2646 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2647 /* disable VLAN receive filtering */
2648 rctl = er32(RCTL);
2649 rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN);
2650 ew32(RCTL, rctl);
2651
2652 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) {
2653 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
2654 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2655 }
2656 }
2657}
2658
2659/**
2660 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
2661 * @adapter: board private structure to initialize
2662 **/
2663static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter)
2664{
2665 struct e1000_hw *hw = &adapter->hw;
2666 u32 rctl;
2667
2668 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2669 /* enable VLAN receive filtering */
2670 rctl = er32(RCTL);
2671 rctl |= E1000_RCTL_VFE;
2672 rctl &= ~E1000_RCTL_CFIEN;
2673 ew32(RCTL, rctl);
2674 }
2675}
2676
2677/**
2678 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping
2679 * @adapter: board private structure to initialize
2680 **/
2681static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter)
2682{
2683 struct e1000_hw *hw = &adapter->hw;
2684 u32 ctrl;
2685
2686 /* disable VLAN tag insert/strip */
2687 ctrl = er32(CTRL);
2688 ctrl &= ~E1000_CTRL_VME;
2689 ew32(CTRL, ctrl);
2690}
2691
2692/**
2693 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
2694 * @adapter: board private structure to initialize
2695 **/
2696static void e1000e_vlan_strip_enable(struct e1000_adapter *adapter)
2697{
2698 struct e1000_hw *hw = &adapter->hw;
2699 u32 ctrl;
2700
2701 /* enable VLAN tag insert/strip */
2702 ctrl = er32(CTRL);
2703 ctrl |= E1000_CTRL_VME;
2704 ew32(CTRL, ctrl);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002705}
2706
2707static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
2708{
2709 struct net_device *netdev = adapter->netdev;
2710 u16 vid = adapter->hw.mng_cookie.vlan_id;
2711 u16 old_vid = adapter->mng_vlan_id;
2712
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002713 if (adapter->hw.mng_cookie.status &
2714 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
2715 e1000_vlan_rx_add_vid(netdev, vid);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002716 adapter->mng_vlan_id = vid;
2717 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07002718
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002719 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && (vid != old_vid))
2720 e1000_vlan_rx_kill_vid(netdev, old_vid);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002721}
2722
2723static void e1000_restore_vlan(struct e1000_adapter *adapter)
2724{
2725 u16 vid;
2726
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002727 e1000_vlan_rx_add_vid(adapter->netdev, 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002728
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002729 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002730 e1000_vlan_rx_add_vid(adapter->netdev, vid);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002731}
2732
Bruce Allancd791612010-05-10 14:59:51 +00002733static void e1000_init_manageability_pt(struct e1000_adapter *adapter)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002734{
2735 struct e1000_hw *hw = &adapter->hw;
Bruce Allancd791612010-05-10 14:59:51 +00002736 u32 manc, manc2h, mdef, i, j;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002737
2738 if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
2739 return;
2740
2741 manc = er32(MANC);
2742
Bruce Allanad680762008-03-28 09:15:03 -07002743 /*
2744 * enable receiving management packets to the host. this will probably
Auke Kokbc7f75f2007-09-17 12:30:59 -07002745 * generate destination unreachable messages from the host OS, but
Bruce Allanad680762008-03-28 09:15:03 -07002746 * the packets will be handled on SMBUS
2747 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002748 manc |= E1000_MANC_EN_MNG2HOST;
2749 manc2h = er32(MANC2H);
Bruce Allancd791612010-05-10 14:59:51 +00002750
2751 switch (hw->mac.type) {
2752 default:
2753 manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664);
2754 break;
2755 case e1000_82574:
2756 case e1000_82583:
2757 /*
2758 * Check if IPMI pass-through decision filter already exists;
2759 * if so, enable it.
2760 */
2761 for (i = 0, j = 0; i < 8; i++) {
2762 mdef = er32(MDEF(i));
2763
2764 /* Ignore filters with anything other than IPMI ports */
Dan Carpenter3b21b502010-06-02 13:43:15 +00002765 if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
Bruce Allancd791612010-05-10 14:59:51 +00002766 continue;
2767
2768 /* Enable this decision filter in MANC2H */
2769 if (mdef)
2770 manc2h |= (1 << i);
2771
2772 j |= mdef;
2773 }
2774
2775 if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
2776 break;
2777
2778 /* Create new decision filter in an empty filter */
2779 for (i = 0, j = 0; i < 8; i++)
2780 if (er32(MDEF(i)) == 0) {
2781 ew32(MDEF(i), (E1000_MDEF_PORT_623 |
2782 E1000_MDEF_PORT_664));
2783 manc2h |= (1 << 1);
2784 j++;
2785 break;
2786 }
2787
2788 if (!j)
2789 e_warn("Unable to create IPMI pass-through filter\n");
2790 break;
2791 }
2792
Auke Kokbc7f75f2007-09-17 12:30:59 -07002793 ew32(MANC2H, manc2h);
2794 ew32(MANC, manc);
2795}
2796
2797/**
Bruce Allanaf667a22010-12-31 06:10:01 +00002798 * e1000_configure_tx - Configure Transmit Unit after Reset
Auke Kokbc7f75f2007-09-17 12:30:59 -07002799 * @adapter: board private structure
2800 *
2801 * Configure the Tx unit of the MAC after a reset.
2802 **/
2803static void e1000_configure_tx(struct e1000_adapter *adapter)
2804{
2805 struct e1000_hw *hw = &adapter->hw;
2806 struct e1000_ring *tx_ring = adapter->tx_ring;
2807 u64 tdba;
Bruce Allanc550b122011-12-16 00:46:17 +00002808 u32 tdlen, tarc;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002809
2810 /* Setup the HW Tx Head and Tail descriptor pointers */
2811 tdba = tx_ring->dma;
2812 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc);
Bruce Allan1e360522012-03-20 03:48:13 +00002813 ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32)));
2814 ew32(TDBAH(0), (tdba >> 32));
2815 ew32(TDLEN(0), tdlen);
2816 ew32(TDH(0), 0);
2817 ew32(TDT(0), 0);
2818 tx_ring->head = adapter->hw.hw_addr + E1000_TDH(0);
2819 tx_ring->tail = adapter->hw.hw_addr + E1000_TDT(0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002820
Auke Kokbc7f75f2007-09-17 12:30:59 -07002821 /* Set the Tx Interrupt Delay register */
2822 ew32(TIDV, adapter->tx_int_delay);
Bruce Allanad680762008-03-28 09:15:03 -07002823 /* Tx irq moderation */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002824 ew32(TADV, adapter->tx_abs_int_delay);
2825
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00002826 if (adapter->flags2 & FLAG2_DMA_BURST) {
2827 u32 txdctl = er32(TXDCTL(0));
2828 txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH |
2829 E1000_TXDCTL_WTHRESH);
2830 /*
2831 * set up some performance related parameters to encourage the
2832 * hardware to use the bus more efficiently in bursts, depends
2833 * on the tx_int_delay to be enabled,
Hiroaki SHIMODA8edc0e62012-10-10 15:34:20 +00002834 * wthresh = 1 ==> burst write is disabled to avoid Tx stalls
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00002835 * hthresh = 1 ==> prefetch when one or more available
2836 * pthresh = 0x1f ==> prefetch if internal cache 31 or less
2837 * BEWARE: this seems to work but should be considered first if
Bruce Allanaf667a22010-12-31 06:10:01 +00002838 * there are Tx hangs or other Tx related bugs
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00002839 */
2840 txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE;
2841 ew32(TXDCTL(0), txdctl);
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00002842 }
Bruce Allan56032be2011-12-16 00:46:01 +00002843 /* erratum work around: set txdctl the same for both queues */
2844 ew32(TXDCTL(1), er32(TXDCTL(0)));
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00002845
Auke Kokbc7f75f2007-09-17 12:30:59 -07002846 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) {
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002847 tarc = er32(TARC(0));
Bruce Allanad680762008-03-28 09:15:03 -07002848 /*
2849 * set the speed mode bit, we'll clear it if we're not at
2850 * gigabit link later
2851 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002852#define SPEED_MODE_BIT (1 << 21)
2853 tarc |= SPEED_MODE_BIT;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002854 ew32(TARC(0), tarc);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002855 }
2856
2857 /* errata: program both queues to unweighted RR */
2858 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) {
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002859 tarc = er32(TARC(0));
Auke Kokbc7f75f2007-09-17 12:30:59 -07002860 tarc |= 1;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002861 ew32(TARC(0), tarc);
2862 tarc = er32(TARC(1));
Auke Kokbc7f75f2007-09-17 12:30:59 -07002863 tarc |= 1;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002864 ew32(TARC(1), tarc);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002865 }
2866
Auke Kokbc7f75f2007-09-17 12:30:59 -07002867 /* Setup Transmit Descriptor Settings for eop descriptor */
2868 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
2869
2870 /* only set IDE if we are delaying interrupts using the timers */
2871 if (adapter->tx_int_delay)
2872 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
2873
2874 /* enable Report Status bit */
2875 adapter->txd_cmd |= E1000_TXD_CMD_RS;
2876
Bruce Allan57cde762012-02-22 09:02:58 +00002877 hw->mac.ops.config_collision_dist(hw);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002878}
2879
2880/**
2881 * e1000_setup_rctl - configure the receive control registers
2882 * @adapter: Board private structure
2883 **/
2884#define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2885 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2886static void e1000_setup_rctl(struct e1000_adapter *adapter)
2887{
2888 struct e1000_hw *hw = &adapter->hw;
2889 u32 rctl, rfctl;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002890 u32 pages = 0;
2891
Bruce Allan2fbe4522012-04-19 03:21:47 +00002892 /* Workaround Si errata on PCHx - configure jumbo frame flow */
2893 if (hw->mac.type >= e1000_pch2lan) {
Bruce Allana1ce6472010-09-22 17:16:40 +00002894 s32 ret_val;
2895
2896 if (adapter->netdev->mtu > ETH_DATA_LEN)
2897 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true);
2898 else
2899 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false);
Bruce Allandd93f952011-01-06 14:29:48 +00002900
2901 if (ret_val)
2902 e_dbg("failed to enable jumbo frame workaround mode\n");
Bruce Allana1ce6472010-09-22 17:16:40 +00002903 }
2904
Auke Kokbc7f75f2007-09-17 12:30:59 -07002905 /* Program MC offset vector base */
2906 rctl = er32(RCTL);
2907 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2908 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
2909 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
2910 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
2911
2912 /* Do not Store bad packets */
2913 rctl &= ~E1000_RCTL_SBP;
2914
2915 /* Enable Long Packet receive */
2916 if (adapter->netdev->mtu <= ETH_DATA_LEN)
2917 rctl &= ~E1000_RCTL_LPE;
2918 else
2919 rctl |= E1000_RCTL_LPE;
2920
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +00002921 /* Some systems expect that the CRC is included in SMBUS traffic. The
2922 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2923 * host memory when this is enabled
2924 */
2925 if (adapter->flags2 & FLAG2_CRC_STRIPPING)
2926 rctl |= E1000_RCTL_SECRC;
Auke Kok5918bd82008-02-12 15:20:24 -08002927
Bruce Allana4f58f52009-06-02 11:29:18 +00002928 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
2929 if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) {
2930 u16 phy_data;
2931
2932 e1e_rphy(hw, PHY_REG(770, 26), &phy_data);
2933 phy_data &= 0xfff8;
2934 phy_data |= (1 << 2);
2935 e1e_wphy(hw, PHY_REG(770, 26), phy_data);
2936
2937 e1e_rphy(hw, 22, &phy_data);
2938 phy_data &= 0x0fff;
2939 phy_data |= (1 << 14);
2940 e1e_wphy(hw, 0x10, 0x2823);
2941 e1e_wphy(hw, 0x11, 0x0003);
2942 e1e_wphy(hw, 22, phy_data);
2943 }
2944
Auke Kokbc7f75f2007-09-17 12:30:59 -07002945 /* Setup buffer sizes */
2946 rctl &= ~E1000_RCTL_SZ_4096;
2947 rctl |= E1000_RCTL_BSEX;
2948 switch (adapter->rx_buffer_len) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07002949 case 2048:
2950 default:
2951 rctl |= E1000_RCTL_SZ_2048;
2952 rctl &= ~E1000_RCTL_BSEX;
2953 break;
2954 case 4096:
2955 rctl |= E1000_RCTL_SZ_4096;
2956 break;
2957 case 8192:
2958 rctl |= E1000_RCTL_SZ_8192;
2959 break;
2960 case 16384:
2961 rctl |= E1000_RCTL_SZ_16384;
2962 break;
2963 }
2964
Bruce Allan5f450212011-07-22 06:21:46 +00002965 /* Enable Extended Status in all Receive Descriptors */
2966 rfctl = er32(RFCTL);
2967 rfctl |= E1000_RFCTL_EXTEN;
Matthew Vickf6bd5572012-04-25 08:01:05 +00002968 ew32(RFCTL, rfctl);
Bruce Allan5f450212011-07-22 06:21:46 +00002969
Auke Kokbc7f75f2007-09-17 12:30:59 -07002970 /*
2971 * 82571 and greater support packet-split where the protocol
2972 * header is placed in skb->data and the packet data is
2973 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2974 * In the case of a non-split, skb->data is linearly filled,
2975 * followed by the page buffers. Therefore, skb->data is
2976 * sized to hold the largest protocol header.
2977 *
2978 * allocations using alloc_page take too long for regular MTU
2979 * so only enable packet split for jumbo frames
2980 *
2981 * Using pages when the page size is greater than 16k wastes
2982 * a lot of memory, since we allocate 3 pages at all times
2983 * per packet.
2984 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002985 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
Bruce Allan79d4e902011-12-16 00:46:27 +00002986 if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE))
Auke Kokbc7f75f2007-09-17 12:30:59 -07002987 adapter->rx_ps_pages = pages;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07002988 else
2989 adapter->rx_ps_pages = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002990
2991 if (adapter->rx_ps_pages) {
Bruce Allan90da0662011-01-06 07:02:53 +00002992 u32 psrctl = 0;
2993
Auke Kok140a7482007-10-25 13:57:58 -07002994 /* Enable Packet split descriptors */
2995 rctl |= E1000_RCTL_DTYP_PS;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002996
2997 psrctl |= adapter->rx_ps_bsize0 >>
2998 E1000_PSRCTL_BSIZE0_SHIFT;
2999
3000 switch (adapter->rx_ps_pages) {
3001 case 3:
3002 psrctl |= PAGE_SIZE <<
3003 E1000_PSRCTL_BSIZE3_SHIFT;
3004 case 2:
3005 psrctl |= PAGE_SIZE <<
3006 E1000_PSRCTL_BSIZE2_SHIFT;
3007 case 1:
3008 psrctl |= PAGE_SIZE >>
3009 E1000_PSRCTL_BSIZE1_SHIFT;
3010 break;
3011 }
3012
3013 ew32(PSRCTL, psrctl);
3014 }
3015
Ben Greearcf955e62012-02-11 15:39:51 +00003016 /* This is useful for sniffing bad packets. */
3017 if (adapter->netdev->features & NETIF_F_RXALL) {
3018 /* UPE and MPE will be handled by normal PROMISC logic
3019 * in e1000e_set_rx_mode */
3020 rctl |= (E1000_RCTL_SBP | /* Receive bad packets */
3021 E1000_RCTL_BAM | /* RX All Bcast Pkts */
3022 E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */
3023
3024 rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */
3025 E1000_RCTL_DPF | /* Allow filtered pause */
3026 E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */
3027 /* Do not mess with E1000_CTRL_VME, it affects transmit as well,
3028 * and that breaks VLANs.
3029 */
3030 }
3031
Auke Kokbc7f75f2007-09-17 12:30:59 -07003032 ew32(RCTL, rctl);
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003033 /* just started the receive unit, no need to restart */
3034 adapter->flags &= ~FLAG_RX_RESTART_NOW;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003035}
3036
3037/**
3038 * e1000_configure_rx - Configure Receive Unit after Reset
3039 * @adapter: board private structure
3040 *
3041 * Configure the Rx unit of the MAC after a reset.
3042 **/
3043static void e1000_configure_rx(struct e1000_adapter *adapter)
3044{
3045 struct e1000_hw *hw = &adapter->hw;
3046 struct e1000_ring *rx_ring = adapter->rx_ring;
3047 u64 rdba;
3048 u32 rdlen, rctl, rxcsum, ctrl_ext;
3049
3050 if (adapter->rx_ps_pages) {
3051 /* this is a 32 byte descriptor */
3052 rdlen = rx_ring->count *
Bruce Allanaf667a22010-12-31 06:10:01 +00003053 sizeof(union e1000_rx_desc_packet_split);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003054 adapter->clean_rx = e1000_clean_rx_irq_ps;
3055 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07003056 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) {
Bruce Allan5f450212011-07-22 06:21:46 +00003057 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07003058 adapter->clean_rx = e1000_clean_jumbo_rx_irq;
3059 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003060 } else {
Bruce Allan5f450212011-07-22 06:21:46 +00003061 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003062 adapter->clean_rx = e1000_clean_rx_irq;
3063 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
3064 }
3065
3066 /* disable receives while setting up the descriptors */
3067 rctl = er32(RCTL);
David S. Miller823dcd22011-08-20 10:39:12 -07003068 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
3069 ew32(RCTL, rctl & ~E1000_RCTL_EN);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003070 e1e_flush();
Bruce Allan1bba4382011-03-19 00:27:20 +00003071 usleep_range(10000, 20000);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003072
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00003073 if (adapter->flags2 & FLAG2_DMA_BURST) {
3074 /*
3075 * set the writeback threshold (only takes effect if the RDTR
3076 * is set). set GRAN=1 and write back up to 0x4 worth, and
Bruce Allanaf667a22010-12-31 06:10:01 +00003077 * enable prefetching of 0x20 Rx descriptors
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00003078 * granularity = 01
3079 * wthresh = 04,
3080 * hthresh = 04,
3081 * pthresh = 0x20
3082 */
3083 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE);
3084 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE);
3085
3086 /*
3087 * override the delay timers for enabling bursting, only if
3088 * the value was not set by the user via module options
3089 */
3090 if (adapter->rx_int_delay == DEFAULT_RDTR)
3091 adapter->rx_int_delay = BURST_RDTR;
3092 if (adapter->rx_abs_int_delay == DEFAULT_RADV)
3093 adapter->rx_abs_int_delay = BURST_RADV;
3094 }
3095
Auke Kokbc7f75f2007-09-17 12:30:59 -07003096 /* set the Receive Delay Timer Register */
3097 ew32(RDTR, adapter->rx_int_delay);
3098
3099 /* irq moderation */
3100 ew32(RADV, adapter->rx_abs_int_delay);
Bruce Allan828bac82010-09-29 21:39:37 +00003101 if ((adapter->itr_setting != 0) && (adapter->itr != 0))
Matthew Vick22a4cca2012-07-12 00:02:42 +00003102 e1000e_write_itr(adapter, adapter->itr);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003103
3104 ctrl_ext = er32(CTRL_EXT);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003105 /* Auto-Mask interrupts upon ICR access */
3106 ctrl_ext |= E1000_CTRL_EXT_IAME;
3107 ew32(IAM, 0xffffffff);
3108 ew32(CTRL_EXT, ctrl_ext);
3109 e1e_flush();
3110
Bruce Allanad680762008-03-28 09:15:03 -07003111 /*
3112 * Setup the HW Rx Head and Tail Descriptor Pointers and
3113 * the Base and Length of the Rx Descriptor Ring
3114 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003115 rdba = rx_ring->dma;
Bruce Allan1e360522012-03-20 03:48:13 +00003116 ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32)));
3117 ew32(RDBAH(0), (rdba >> 32));
3118 ew32(RDLEN(0), rdlen);
3119 ew32(RDH(0), 0);
3120 ew32(RDT(0), 0);
3121 rx_ring->head = adapter->hw.hw_addr + E1000_RDH(0);
3122 rx_ring->tail = adapter->hw.hw_addr + E1000_RDT(0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003123
3124 /* Enable Receive Checksum Offload for TCP and UDP */
3125 rxcsum = er32(RXCSUM);
Bruce Allan2e1706f2012-06-30 20:02:42 +00003126 if (adapter->netdev->features & NETIF_F_RXCSUM)
Auke Kokbc7f75f2007-09-17 12:30:59 -07003127 rxcsum |= E1000_RXCSUM_TUOFL;
Bruce Allan2e1706f2012-06-30 20:02:42 +00003128 else
Auke Kokbc7f75f2007-09-17 12:30:59 -07003129 rxcsum &= ~E1000_RXCSUM_TUOFL;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003130 ew32(RXCSUM, rxcsum);
3131
Bruce Allan79d4e902011-12-16 00:46:27 +00003132 if (adapter->hw.mac.type == e1000_pch2lan) {
3133 /*
3134 * With jumbo frames, excessive C-state transition
3135 * latencies result in dropped transactions.
3136 */
Bruce Allan53ec5492009-11-20 23:27:40 +00003137 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3138 u32 rxdctl = er32(RXDCTL(0));
3139 ew32(RXDCTL(0), rxdctl | 0x3);
Bruce Allanaf667a22010-12-31 06:10:01 +00003140 pm_qos_update_request(&adapter->netdev->pm_qos_req, 55);
Bruce Allan53ec5492009-11-20 23:27:40 +00003141 } else {
Bruce Allanaf667a22010-12-31 06:10:01 +00003142 pm_qos_update_request(&adapter->netdev->pm_qos_req,
3143 PM_QOS_DEFAULT_VALUE);
Bruce Allan53ec5492009-11-20 23:27:40 +00003144 }
Bruce Allan97ac8ca2008-04-29 09:16:05 -07003145 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07003146
3147 /* Enable Receives */
3148 ew32(RCTL, rctl);
3149}
3150
3151/**
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003152 * e1000e_write_mc_addr_list - write multicast addresses to MTA
Auke Kokbc7f75f2007-09-17 12:30:59 -07003153 * @netdev: network interface device structure
3154 *
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003155 * Writes multicast address list to the MTA hash table.
3156 * Returns: -ENOMEM on failure
3157 * 0 on no addresses written
3158 * X on writing X addresses to MTA
3159 */
3160static int e1000e_write_mc_addr_list(struct net_device *netdev)
Auke Kokbc7f75f2007-09-17 12:30:59 -07003161{
3162 struct e1000_adapter *adapter = netdev_priv(netdev);
3163 struct e1000_hw *hw = &adapter->hw;
Jiri Pirko22bedad32010-04-01 21:22:57 +00003164 struct netdev_hw_addr *ha;
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003165 u8 *mta_list;
3166 int i;
3167
3168 if (netdev_mc_empty(netdev)) {
3169 /* nothing to program, so clear mc list */
3170 hw->mac.ops.update_mc_addr_list(hw, NULL, 0);
3171 return 0;
3172 }
3173
3174 mta_list = kzalloc(netdev_mc_count(netdev) * ETH_ALEN, GFP_ATOMIC);
3175 if (!mta_list)
3176 return -ENOMEM;
3177
3178 /* update_mc_addr_list expects a packed array of only addresses. */
3179 i = 0;
3180 netdev_for_each_mc_addr(ha, netdev)
3181 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN);
3182
3183 hw->mac.ops.update_mc_addr_list(hw, mta_list, i);
3184 kfree(mta_list);
3185
3186 return netdev_mc_count(netdev);
3187}
3188
3189/**
3190 * e1000e_write_uc_addr_list - write unicast addresses to RAR table
3191 * @netdev: network interface device structure
3192 *
3193 * Writes unicast address list to the RAR table.
3194 * Returns: -ENOMEM on failure/insufficient address space
3195 * 0 on no addresses written
3196 * X on writing X addresses to the RAR table
3197 **/
3198static int e1000e_write_uc_addr_list(struct net_device *netdev)
3199{
3200 struct e1000_adapter *adapter = netdev_priv(netdev);
3201 struct e1000_hw *hw = &adapter->hw;
3202 unsigned int rar_entries = hw->mac.rar_entry_count;
3203 int count = 0;
3204
3205 /* save a rar entry for our hardware address */
3206 rar_entries--;
3207
3208 /* save a rar entry for the LAA workaround */
3209 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA)
3210 rar_entries--;
3211
3212 /* return ENOMEM indicating insufficient memory for addresses */
3213 if (netdev_uc_count(netdev) > rar_entries)
3214 return -ENOMEM;
3215
3216 if (!netdev_uc_empty(netdev) && rar_entries) {
3217 struct netdev_hw_addr *ha;
3218
3219 /*
3220 * write the addresses in reverse order to avoid write
3221 * combining
3222 */
3223 netdev_for_each_uc_addr(ha, netdev) {
3224 if (!rar_entries)
3225 break;
Bruce Allan69e1e012012-04-14 03:28:50 +00003226 hw->mac.ops.rar_set(hw, ha->addr, rar_entries--);
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003227 count++;
3228 }
3229 }
3230
3231 /* zero out the remaining RAR entries not used above */
3232 for (; rar_entries > 0; rar_entries--) {
3233 ew32(RAH(rar_entries), 0);
3234 ew32(RAL(rar_entries), 0);
3235 }
3236 e1e_flush();
3237
3238 return count;
3239}
3240
3241/**
3242 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set
3243 * @netdev: network interface device structure
3244 *
3245 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast
3246 * address list or the network interface flags are updated. This routine is
3247 * responsible for configuring the hardware for proper unicast, multicast,
3248 * promiscuous mode, and all-multi behavior.
3249 **/
3250static void e1000e_set_rx_mode(struct net_device *netdev)
3251{
3252 struct e1000_adapter *adapter = netdev_priv(netdev);
3253 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003254 u32 rctl;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003255
3256 /* Check for Promiscuous and All Multicast modes */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003257 rctl = er32(RCTL);
3258
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003259 /* clear the affected bits */
3260 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
3261
Auke Kokbc7f75f2007-09-17 12:30:59 -07003262 if (netdev->flags & IFF_PROMISC) {
3263 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
Jeff Kirsher86d70e52011-03-25 16:01:01 +00003264 /* Do not hardware filter VLANs in promisc mode */
3265 e1000e_vlan_filter_disable(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003266 } else {
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003267 int count;
Bruce Allan3d3a1672012-02-23 03:13:18 +00003268
Patrick McHardy746b9f02008-07-16 20:15:45 -07003269 if (netdev->flags & IFF_ALLMULTI) {
3270 rctl |= E1000_RCTL_MPE;
Patrick McHardy746b9f02008-07-16 20:15:45 -07003271 } else {
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003272 /*
3273 * Write addresses to the MTA, if the attempt fails
3274 * then we should just turn on promiscuous mode so
3275 * that we can at least receive multicast traffic
3276 */
3277 count = e1000e_write_mc_addr_list(netdev);
3278 if (count < 0)
3279 rctl |= E1000_RCTL_MPE;
Patrick McHardy746b9f02008-07-16 20:15:45 -07003280 }
Jeff Kirsher86d70e52011-03-25 16:01:01 +00003281 e1000e_vlan_filter_enable(adapter);
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003282 /*
3283 * Write addresses to available RAR registers, if there is not
3284 * sufficient space to store all the addresses then enable
3285 * unicast promiscuous mode
3286 */
3287 count = e1000e_write_uc_addr_list(netdev);
3288 if (count < 0)
3289 rctl |= E1000_RCTL_UPE;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003290 }
3291
3292 ew32(RCTL, rctl);
3293
Jeff Kirsher86d70e52011-03-25 16:01:01 +00003294 if (netdev->features & NETIF_F_HW_VLAN_RX)
3295 e1000e_vlan_strip_enable(adapter);
3296 else
3297 e1000e_vlan_strip_disable(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003298}
3299
Bruce Allan70495a52012-01-11 01:26:50 +00003300static void e1000e_setup_rss_hash(struct e1000_adapter *adapter)
3301{
3302 struct e1000_hw *hw = &adapter->hw;
3303 u32 mrqc, rxcsum;
3304 int i;
3305 static const u32 rsskey[10] = {
3306 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0,
3307 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe
3308 };
3309
3310 /* Fill out hash function seed */
3311 for (i = 0; i < 10; i++)
3312 ew32(RSSRK(i), rsskey[i]);
3313
3314 /* Direct all traffic to queue 0 */
3315 for (i = 0; i < 32; i++)
3316 ew32(RETA(i), 0);
3317
3318 /*
3319 * Disable raw packet checksumming so that RSS hash is placed in
3320 * descriptor on writeback.
3321 */
3322 rxcsum = er32(RXCSUM);
3323 rxcsum |= E1000_RXCSUM_PCSD;
3324
3325 ew32(RXCSUM, rxcsum);
3326
3327 mrqc = (E1000_MRQC_RSS_FIELD_IPV4 |
3328 E1000_MRQC_RSS_FIELD_IPV4_TCP |
3329 E1000_MRQC_RSS_FIELD_IPV6 |
3330 E1000_MRQC_RSS_FIELD_IPV6_TCP |
3331 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX);
3332
3333 ew32(MRQC, mrqc);
3334}
3335
Auke Kokbc7f75f2007-09-17 12:30:59 -07003336/**
Bruce Allanad680762008-03-28 09:15:03 -07003337 * e1000_configure - configure the hardware for Rx and Tx
Auke Kokbc7f75f2007-09-17 12:30:59 -07003338 * @adapter: private board structure
3339 **/
3340static void e1000_configure(struct e1000_adapter *adapter)
3341{
Bruce Allan55aa6982011-12-16 00:45:45 +00003342 struct e1000_ring *rx_ring = adapter->rx_ring;
3343
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003344 e1000e_set_rx_mode(adapter->netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003345
3346 e1000_restore_vlan(adapter);
Bruce Allancd791612010-05-10 14:59:51 +00003347 e1000_init_manageability_pt(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003348
3349 e1000_configure_tx(adapter);
Bruce Allan70495a52012-01-11 01:26:50 +00003350
3351 if (adapter->netdev->features & NETIF_F_RXHASH)
3352 e1000e_setup_rss_hash(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003353 e1000_setup_rctl(adapter);
3354 e1000_configure_rx(adapter);
Bruce Allan55aa6982011-12-16 00:45:45 +00003355 adapter->alloc_rx_buf(rx_ring, e1000_desc_unused(rx_ring), GFP_KERNEL);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003356}
3357
3358/**
3359 * e1000e_power_up_phy - restore link in case the phy was powered down
3360 * @adapter: address of board private structure
3361 *
3362 * The phy may be powered down to save power and turn off link when the
3363 * driver is unloaded and wake on lan is not enabled (among others)
3364 * *** this routine MUST be followed by a call to e1000e_reset ***
3365 **/
3366void e1000e_power_up_phy(struct e1000_adapter *adapter)
3367{
Bruce Allan17f208d2009-12-01 15:47:22 +00003368 if (adapter->hw.phy.ops.power_up)
3369 adapter->hw.phy.ops.power_up(&adapter->hw);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003370
3371 adapter->hw.mac.ops.setup_link(&adapter->hw);
3372}
3373
3374/**
3375 * e1000_power_down_phy - Power down the PHY
3376 *
Bruce Allan17f208d2009-12-01 15:47:22 +00003377 * Power down the PHY so no link is implied when interface is down.
3378 * The PHY cannot be powered down if management or WoL is active.
Auke Kokbc7f75f2007-09-17 12:30:59 -07003379 */
3380static void e1000_power_down_phy(struct e1000_adapter *adapter)
3381{
Auke Kokbc7f75f2007-09-17 12:30:59 -07003382 /* WoL is enabled */
Auke Kok23b66e22008-02-11 09:25:51 -08003383 if (adapter->wol)
Auke Kokbc7f75f2007-09-17 12:30:59 -07003384 return;
3385
Bruce Allan17f208d2009-12-01 15:47:22 +00003386 if (adapter->hw.phy.ops.power_down)
3387 adapter->hw.phy.ops.power_down(&adapter->hw);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003388}
3389
3390/**
3391 * e1000e_reset - bring the hardware into a known good state
3392 *
3393 * This function boots the hardware and enables some settings that
3394 * require a configuration cycle of the hardware - those cannot be
3395 * set/changed during runtime. After reset the device needs to be
Bruce Allanad680762008-03-28 09:15:03 -07003396 * properly configured for Rx, Tx etc.
Auke Kokbc7f75f2007-09-17 12:30:59 -07003397 */
3398void e1000e_reset(struct e1000_adapter *adapter)
3399{
3400 struct e1000_mac_info *mac = &adapter->hw.mac;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003401 struct e1000_fc_info *fc = &adapter->hw.fc;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003402 struct e1000_hw *hw = &adapter->hw;
3403 u32 tx_space, min_tx_space, min_rx_space;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003404 u32 pba = adapter->pba;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003405 u16 hwm;
3406
Bruce Allanad680762008-03-28 09:15:03 -07003407 /* reset Packet Buffer Allocation to default */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003408 ew32(PBA, pba);
Auke Kokdf762462007-10-25 13:57:53 -07003409
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003410 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
Bruce Allanad680762008-03-28 09:15:03 -07003411 /*
3412 * To maintain wire speed transmits, the Tx FIFO should be
Auke Kokbc7f75f2007-09-17 12:30:59 -07003413 * large enough to accommodate two full transmit packets,
3414 * rounded up to the next 1KB and expressed in KB. Likewise,
3415 * the Rx FIFO should be large enough to accommodate at least
3416 * one full receive packet and is similarly rounded up and
Bruce Allanad680762008-03-28 09:15:03 -07003417 * expressed in KB.
3418 */
Auke Kokdf762462007-10-25 13:57:53 -07003419 pba = er32(PBA);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003420 /* upper 16 bits has Tx packet buffer allocation size in KB */
Auke Kokdf762462007-10-25 13:57:53 -07003421 tx_space = pba >> 16;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003422 /* lower 16 bits has Rx packet buffer allocation size in KB */
Auke Kokdf762462007-10-25 13:57:53 -07003423 pba &= 0xffff;
Bruce Allanad680762008-03-28 09:15:03 -07003424 /*
Bruce Allanaf667a22010-12-31 06:10:01 +00003425 * the Tx fifo also stores 16 bytes of information about the Tx
Bruce Allanad680762008-03-28 09:15:03 -07003426 * but don't include ethernet FCS because hardware appends it
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003427 */
3428 min_tx_space = (adapter->max_frame_size +
Auke Kokbc7f75f2007-09-17 12:30:59 -07003429 sizeof(struct e1000_tx_desc) -
3430 ETH_FCS_LEN) * 2;
3431 min_tx_space = ALIGN(min_tx_space, 1024);
3432 min_tx_space >>= 10;
3433 /* software strips receive CRC, so leave room for it */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003434 min_rx_space = adapter->max_frame_size;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003435 min_rx_space = ALIGN(min_rx_space, 1024);
3436 min_rx_space >>= 10;
3437
Bruce Allanad680762008-03-28 09:15:03 -07003438 /*
3439 * If current Tx allocation is less than the min Tx FIFO size,
Auke Kokbc7f75f2007-09-17 12:30:59 -07003440 * and the min Tx FIFO size is less than the current Rx FIFO
Bruce Allanad680762008-03-28 09:15:03 -07003441 * allocation, take space away from current Rx allocation
3442 */
Auke Kokdf762462007-10-25 13:57:53 -07003443 if ((tx_space < min_tx_space) &&
3444 ((min_tx_space - tx_space) < pba)) {
3445 pba -= min_tx_space - tx_space;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003446
Bruce Allanad680762008-03-28 09:15:03 -07003447 /*
Bruce Allanaf667a22010-12-31 06:10:01 +00003448 * if short on Rx space, Rx wins and must trump Tx
Bruce Allan419e5512012-08-17 06:18:02 +00003449 * adjustment
Bruce Allanad680762008-03-28 09:15:03 -07003450 */
Bruce Allan79d4e902011-12-16 00:46:27 +00003451 if (pba < min_rx_space)
Auke Kokdf762462007-10-25 13:57:53 -07003452 pba = min_rx_space;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003453 }
Auke Kokdf762462007-10-25 13:57:53 -07003454
3455 ew32(PBA, pba);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003456 }
3457
Bruce Allanad680762008-03-28 09:15:03 -07003458 /*
3459 * flow control settings
3460 *
Bruce Allan38eb3942009-11-19 12:34:20 +00003461 * The high water mark must be low enough to fit one full frame
Auke Kokbc7f75f2007-09-17 12:30:59 -07003462 * (or the size used for early receive) above it in the Rx FIFO.
3463 * Set it to the lower of:
3464 * - 90% of the Rx FIFO size, and
Bruce Allan38eb3942009-11-19 12:34:20 +00003465 * - the full Rx FIFO size minus one full frame
Bruce Allanad680762008-03-28 09:15:03 -07003466 */
Bruce Alland3738bb2010-06-16 13:27:28 +00003467 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME)
3468 fc->pause_time = 0xFFFF;
3469 else
3470 fc->pause_time = E1000_FC_PAUSE_TIME;
Bruce Allanb20caa82012-02-22 09:03:03 +00003471 fc->send_xon = true;
Bruce Alland3738bb2010-06-16 13:27:28 +00003472 fc->current_mode = fc->requested_mode;
3473
3474 switch (hw->mac.type) {
Bruce Allan79d4e902011-12-16 00:46:27 +00003475 case e1000_ich9lan:
3476 case e1000_ich10lan:
3477 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3478 pba = 14;
3479 ew32(PBA, pba);
3480 fc->high_water = 0x2800;
3481 fc->low_water = fc->high_water - 8;
3482 break;
3483 }
3484 /* fall-through */
Bruce Alland3738bb2010-06-16 13:27:28 +00003485 default:
Bruce Allan79d4e902011-12-16 00:46:27 +00003486 hwm = min(((pba << 10) * 9 / 10),
3487 ((pba << 10) - adapter->max_frame_size));
Bruce Alland3738bb2010-06-16 13:27:28 +00003488
3489 fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */
3490 fc->low_water = fc->high_water - 8;
3491 break;
3492 case e1000_pchlan:
Bruce Allan38eb3942009-11-19 12:34:20 +00003493 /*
3494 * Workaround PCH LOM adapter hangs with certain network
3495 * loads. If hangs persist, try disabling Tx flow control.
3496 */
3497 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3498 fc->high_water = 0x3500;
3499 fc->low_water = 0x1500;
3500 } else {
3501 fc->high_water = 0x5000;
3502 fc->low_water = 0x3000;
3503 }
Bruce Allana3055952010-05-10 15:02:12 +00003504 fc->refresh_time = 0x1000;
Bruce Alland3738bb2010-06-16 13:27:28 +00003505 break;
3506 case e1000_pch2lan:
Bruce Allan2fbe4522012-04-19 03:21:47 +00003507 case e1000_pch_lpt:
Bruce Alland3738bb2010-06-16 13:27:28 +00003508 fc->high_water = 0x05C20;
3509 fc->low_water = 0x05048;
3510 fc->pause_time = 0x0650;
3511 fc->refresh_time = 0x0400;
Bruce Allan828bac82010-09-29 21:39:37 +00003512 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3513 pba = 14;
3514 ew32(PBA, pba);
3515 }
Bruce Alland3738bb2010-06-16 13:27:28 +00003516 break;
Bruce Allan38eb3942009-11-19 12:34:20 +00003517 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07003518
Bruce Allan828bac82010-09-29 21:39:37 +00003519 /*
Bruce Alland821a4c2012-08-24 20:38:11 +00003520 * Alignment of Tx data is on an arbitrary byte boundary with the
3521 * maximum size per Tx descriptor limited only to the transmit
3522 * allocation of the packet buffer minus 96 bytes with an upper
3523 * limit of 24KB due to receive synchronization limitations.
3524 */
3525 adapter->tx_fifo_limit = min_t(u32, ((er32(PBA) >> 16) << 10) - 96,
3526 24 << 10);
3527
3528 /*
Bruce Allan828bac82010-09-29 21:39:37 +00003529 * Disable Adaptive Interrupt Moderation if 2 full packets cannot
Bruce Allan79d4e902011-12-16 00:46:27 +00003530 * fit in receive buffer.
Bruce Allan828bac82010-09-29 21:39:37 +00003531 */
3532 if (adapter->itr_setting & 0x3) {
Bruce Allan79d4e902011-12-16 00:46:27 +00003533 if ((adapter->max_frame_size * 2) > (pba << 10)) {
Bruce Allan828bac82010-09-29 21:39:37 +00003534 if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) {
3535 dev_info(&adapter->pdev->dev,
3536 "Interrupt Throttle Rate turned off\n");
3537 adapter->flags2 |= FLAG2_DISABLE_AIM;
Matthew Vick22a4cca2012-07-12 00:02:42 +00003538 e1000e_write_itr(adapter, 0);
Bruce Allan828bac82010-09-29 21:39:37 +00003539 }
3540 } else if (adapter->flags2 & FLAG2_DISABLE_AIM) {
3541 dev_info(&adapter->pdev->dev,
3542 "Interrupt Throttle Rate turned on\n");
3543 adapter->flags2 &= ~FLAG2_DISABLE_AIM;
3544 adapter->itr = 20000;
Matthew Vick22a4cca2012-07-12 00:02:42 +00003545 e1000e_write_itr(adapter, adapter->itr);
Bruce Allan828bac82010-09-29 21:39:37 +00003546 }
3547 }
3548
Auke Kokbc7f75f2007-09-17 12:30:59 -07003549 /* Allow time for pending master requests to run */
3550 mac->ops.reset_hw(hw);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07003551
3552 /*
3553 * For parts with AMT enabled, let the firmware know
3554 * that the network interface is in control
3555 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07003556 if (adapter->flags & FLAG_HAS_AMT)
Bruce Allan31dbe5b2011-01-06 14:29:52 +00003557 e1000e_get_hw_control(adapter);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07003558
Auke Kokbc7f75f2007-09-17 12:30:59 -07003559 ew32(WUC, 0);
3560
3561 if (mac->ops.init_hw(hw))
Jeff Kirsher44defeb2008-08-04 17:20:41 -07003562 e_err("Hardware Error\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07003563
3564 e1000_update_mng_vlan(adapter);
3565
3566 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3567 ew32(VET, ETH_P_8021Q);
3568
3569 e1000e_reset_adaptive(hw);
Bruce Allan31dbe5b2011-01-06 14:29:52 +00003570
3571 if (!netif_running(adapter->netdev) &&
3572 !test_bit(__E1000_TESTING, &adapter->state)) {
3573 e1000_power_down_phy(adapter);
3574 return;
3575 }
3576
Auke Kokbc7f75f2007-09-17 12:30:59 -07003577 e1000_get_phy_info(hw);
3578
Bruce Allan918d7192009-06-02 11:28:20 +00003579 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) &&
3580 !(adapter->flags & FLAG_SMART_POWER_DOWN)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07003581 u16 phy_data = 0;
Bruce Allanad680762008-03-28 09:15:03 -07003582 /*
3583 * speed up time to link by disabling smart power down, ignore
Auke Kokbc7f75f2007-09-17 12:30:59 -07003584 * the return value of this function because there is nothing
Bruce Allanad680762008-03-28 09:15:03 -07003585 * different we would do if it failed
3586 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003587 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
3588 phy_data &= ~IGP02E1000_PM_SPD;
3589 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
3590 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07003591}
3592
3593int e1000e_up(struct e1000_adapter *adapter)
3594{
3595 struct e1000_hw *hw = &adapter->hw;
3596
3597 /* hardware has been reset, we need to reload some things */
3598 e1000_configure(adapter);
3599
3600 clear_bit(__E1000_DOWN, &adapter->state);
3601
Bruce Allan4662e822008-08-26 18:37:06 -07003602 if (adapter->msix_entries)
3603 e1000_configure_msix(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003604 e1000_irq_enable(adapter);
3605
Bruce Allan400484f2011-05-13 07:20:03 +00003606 netif_start_queue(adapter->netdev);
Jesse Brandeburg4cb9be72009-04-21 18:42:05 +00003607
Auke Kokbc7f75f2007-09-17 12:30:59 -07003608 /* fire a link change interrupt to start the watchdog */
Bruce Allan52a9b232010-05-10 15:00:10 +00003609 if (adapter->msix_entries)
3610 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
3611 else
3612 ew32(ICS, E1000_ICS_LSC);
3613
Auke Kokbc7f75f2007-09-17 12:30:59 -07003614 return 0;
3615}
3616
Jesse Brandeburg713b3c92011-02-02 10:19:50 +00003617static void e1000e_flush_descriptors(struct e1000_adapter *adapter)
3618{
3619 struct e1000_hw *hw = &adapter->hw;
3620
3621 if (!(adapter->flags2 & FLAG2_DMA_BURST))
3622 return;
3623
3624 /* flush pending descriptor writebacks to memory */
3625 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
3626 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
3627
3628 /* execute the writes immediately */
3629 e1e_flush();
Matthew Vickbf030852012-03-16 09:03:00 +00003630
3631 /*
3632 * due to rare timing issues, write to TIDV/RDTR again to ensure the
3633 * write is successful
3634 */
3635 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
3636 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
3637
3638 /* execute the writes immediately */
3639 e1e_flush();
Jesse Brandeburg713b3c92011-02-02 10:19:50 +00003640}
3641
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00003642static void e1000e_update_stats(struct e1000_adapter *adapter);
3643
Auke Kokbc7f75f2007-09-17 12:30:59 -07003644void e1000e_down(struct e1000_adapter *adapter)
3645{
3646 struct net_device *netdev = adapter->netdev;
3647 struct e1000_hw *hw = &adapter->hw;
3648 u32 tctl, rctl;
3649
Bruce Allanad680762008-03-28 09:15:03 -07003650 /*
3651 * signal that we're down so the interrupt handler does not
3652 * reschedule our watchdog timer
3653 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003654 set_bit(__E1000_DOWN, &adapter->state);
3655
3656 /* disable receives in the hardware */
3657 rctl = er32(RCTL);
David S. Miller823dcd22011-08-20 10:39:12 -07003658 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
3659 ew32(RCTL, rctl & ~E1000_RCTL_EN);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003660 /* flush and sleep below */
3661
Jesse Brandeburg4cb9be72009-04-21 18:42:05 +00003662 netif_stop_queue(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003663
3664 /* disable transmits in the hardware */
3665 tctl = er32(TCTL);
3666 tctl &= ~E1000_TCTL_EN;
3667 ew32(TCTL, tctl);
David S. Miller823dcd22011-08-20 10:39:12 -07003668
Auke Kokbc7f75f2007-09-17 12:30:59 -07003669 /* flush both disables and wait for them to finish */
3670 e1e_flush();
Bruce Allan1bba4382011-03-19 00:27:20 +00003671 usleep_range(10000, 20000);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003672
Auke Kokbc7f75f2007-09-17 12:30:59 -07003673 e1000_irq_disable(adapter);
3674
3675 del_timer_sync(&adapter->watchdog_timer);
3676 del_timer_sync(&adapter->phy_info_timer);
3677
Auke Kokbc7f75f2007-09-17 12:30:59 -07003678 netif_carrier_off(netdev);
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00003679
3680 spin_lock(&adapter->stats64_lock);
3681 e1000e_update_stats(adapter);
3682 spin_unlock(&adapter->stats64_lock);
3683
Bruce Allan400484f2011-05-13 07:20:03 +00003684 e1000e_flush_descriptors(adapter);
Bruce Allan55aa6982011-12-16 00:45:45 +00003685 e1000_clean_tx_ring(adapter->tx_ring);
3686 e1000_clean_rx_ring(adapter->rx_ring);
Bruce Allan400484f2011-05-13 07:20:03 +00003687
Auke Kokbc7f75f2007-09-17 12:30:59 -07003688 adapter->link_speed = 0;
3689 adapter->link_duplex = 0;
3690
Jeff Kirsher52cc3082008-06-24 17:01:29 -07003691 if (!pci_channel_offline(adapter->pdev))
3692 e1000e_reset(adapter);
Jesse Brandeburg713b3c92011-02-02 10:19:50 +00003693
Auke Kokbc7f75f2007-09-17 12:30:59 -07003694 /*
3695 * TODO: for power management, we could drop the link and
3696 * pci_disable_device here.
3697 */
3698}
3699
3700void e1000e_reinit_locked(struct e1000_adapter *adapter)
3701{
3702 might_sleep();
3703 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
Bruce Allan1bba4382011-03-19 00:27:20 +00003704 usleep_range(1000, 2000);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003705 e1000e_down(adapter);
3706 e1000e_up(adapter);
3707 clear_bit(__E1000_RESETTING, &adapter->state);
3708}
3709
3710/**
3711 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
3712 * @adapter: board private structure to initialize
3713 *
3714 * e1000_sw_init initializes the Adapter private data structure.
3715 * Fields are initialized based on PCI device information and
3716 * OS network device settings (MTU size).
3717 **/
3718static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
3719{
Auke Kokbc7f75f2007-09-17 12:30:59 -07003720 struct net_device *netdev = adapter->netdev;
3721
3722 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
3723 adapter->rx_ps_bsize0 = 128;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003724 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
3725 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
Bruce Allan55aa6982011-12-16 00:45:45 +00003726 adapter->tx_ring_count = E1000_DEFAULT_TXD;
3727 adapter->rx_ring_count = E1000_DEFAULT_RXD;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003728
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00003729 spin_lock_init(&adapter->stats64_lock);
3730
Bruce Allan4662e822008-08-26 18:37:06 -07003731 e1000e_set_interrupt_capability(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003732
Bruce Allan4662e822008-08-26 18:37:06 -07003733 if (e1000_alloc_queues(adapter))
3734 return -ENOMEM;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003735
Auke Kokbc7f75f2007-09-17 12:30:59 -07003736 /* Explicitly disable IRQ since the NIC can be in any state. */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003737 e1000_irq_disable(adapter);
3738
Auke Kokbc7f75f2007-09-17 12:30:59 -07003739 set_bit(__E1000_DOWN, &adapter->state);
3740 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003741}
3742
3743/**
Bruce Allanf8d59f72008-08-08 18:36:11 -07003744 * e1000_intr_msi_test - Interrupt Handler
3745 * @irq: interrupt number
3746 * @data: pointer to a network interface device structure
3747 **/
3748static irqreturn_t e1000_intr_msi_test(int irq, void *data)
3749{
3750 struct net_device *netdev = data;
3751 struct e1000_adapter *adapter = netdev_priv(netdev);
3752 struct e1000_hw *hw = &adapter->hw;
3753 u32 icr = er32(ICR);
3754
Bruce Allan3bb99fe2009-11-20 23:25:07 +00003755 e_dbg("icr is %08X\n", icr);
Bruce Allanf8d59f72008-08-08 18:36:11 -07003756 if (icr & E1000_ICR_RXSEQ) {
3757 adapter->flags &= ~FLAG_MSI_TEST_FAILED;
Bruce Allanbc763292012-08-17 06:18:07 +00003758 /*
3759 * Force memory writes to complete before acknowledging the
3760 * interrupt is handled.
3761 */
Bruce Allanf8d59f72008-08-08 18:36:11 -07003762 wmb();
3763 }
3764
3765 return IRQ_HANDLED;
3766}
3767
3768/**
3769 * e1000_test_msi_interrupt - Returns 0 for successful test
3770 * @adapter: board private struct
3771 *
3772 * code flow taken from tg3.c
3773 **/
3774static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
3775{
3776 struct net_device *netdev = adapter->netdev;
3777 struct e1000_hw *hw = &adapter->hw;
3778 int err;
3779
3780 /* poll_enable hasn't been called yet, so don't need disable */
3781 /* clear any pending events */
3782 er32(ICR);
3783
3784 /* free the real vector and request a test handler */
3785 e1000_free_irq(adapter);
Bruce Allan4662e822008-08-26 18:37:06 -07003786 e1000e_reset_interrupt_capability(adapter);
Bruce Allanf8d59f72008-08-08 18:36:11 -07003787
3788 /* Assume that the test fails, if it succeeds then the test
3789 * MSI irq handler will unset this flag */
3790 adapter->flags |= FLAG_MSI_TEST_FAILED;
3791
3792 err = pci_enable_msi(adapter->pdev);
3793 if (err)
3794 goto msi_test_failed;
3795
Joe Perchesa0607fd2009-11-18 23:29:17 -08003796 err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0,
Bruce Allanf8d59f72008-08-08 18:36:11 -07003797 netdev->name, netdev);
3798 if (err) {
3799 pci_disable_msi(adapter->pdev);
3800 goto msi_test_failed;
3801 }
3802
Bruce Allanbc763292012-08-17 06:18:07 +00003803 /*
3804 * Force memory writes to complete before enabling and firing an
3805 * interrupt.
3806 */
Bruce Allanf8d59f72008-08-08 18:36:11 -07003807 wmb();
3808
3809 e1000_irq_enable(adapter);
3810
3811 /* fire an unusual interrupt on the test handler */
3812 ew32(ICS, E1000_ICS_RXSEQ);
3813 e1e_flush();
Prasanna S Panchamukhi569a3af2012-04-19 17:01:00 +00003814 msleep(100);
Bruce Allanf8d59f72008-08-08 18:36:11 -07003815
3816 e1000_irq_disable(adapter);
3817
Bruce Allanbc763292012-08-17 06:18:07 +00003818 rmb(); /* read flags after interrupt has been fired */
Bruce Allanf8d59f72008-08-08 18:36:11 -07003819
3820 if (adapter->flags & FLAG_MSI_TEST_FAILED) {
Bruce Allan4662e822008-08-26 18:37:06 -07003821 adapter->int_mode = E1000E_INT_MODE_LEGACY;
Jean Delvare068e8a32010-09-12 22:45:39 +00003822 e_info("MSI interrupt test failed, using legacy interrupt.\n");
Bruce Allan24b706b2012-01-31 06:37:22 +00003823 } else {
Jean Delvare068e8a32010-09-12 22:45:39 +00003824 e_dbg("MSI interrupt test succeeded!\n");
Bruce Allan24b706b2012-01-31 06:37:22 +00003825 }
Bruce Allanf8d59f72008-08-08 18:36:11 -07003826
3827 free_irq(adapter->pdev->irq, netdev);
3828 pci_disable_msi(adapter->pdev);
3829
Bruce Allanf8d59f72008-08-08 18:36:11 -07003830msi_test_failed:
Bruce Allan4662e822008-08-26 18:37:06 -07003831 e1000e_set_interrupt_capability(adapter);
Jean Delvare068e8a32010-09-12 22:45:39 +00003832 return e1000_request_irq(adapter);
Bruce Allanf8d59f72008-08-08 18:36:11 -07003833}
3834
3835/**
3836 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3837 * @adapter: board private struct
3838 *
3839 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3840 **/
3841static int e1000_test_msi(struct e1000_adapter *adapter)
3842{
3843 int err;
3844 u16 pci_cmd;
3845
3846 if (!(adapter->flags & FLAG_MSI_ENABLED))
3847 return 0;
3848
3849 /* disable SERR in case the MSI write causes a master abort */
3850 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
Dean Nelson36f24072010-06-29 18:12:05 +00003851 if (pci_cmd & PCI_COMMAND_SERR)
3852 pci_write_config_word(adapter->pdev, PCI_COMMAND,
3853 pci_cmd & ~PCI_COMMAND_SERR);
Bruce Allanf8d59f72008-08-08 18:36:11 -07003854
3855 err = e1000_test_msi_interrupt(adapter);
3856
Dean Nelson36f24072010-06-29 18:12:05 +00003857 /* re-enable SERR */
3858 if (pci_cmd & PCI_COMMAND_SERR) {
3859 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
3860 pci_cmd |= PCI_COMMAND_SERR;
3861 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);
3862 }
Bruce Allanf8d59f72008-08-08 18:36:11 -07003863
Bruce Allanf8d59f72008-08-08 18:36:11 -07003864 return err;
3865}
3866
3867/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07003868 * e1000_open - Called when a network interface is made active
3869 * @netdev: network interface device structure
3870 *
3871 * Returns 0 on success, negative value on failure
3872 *
3873 * The open entry point is called when a network interface is made
3874 * active by the system (IFF_UP). At this point all resources needed
3875 * for transmit and receive operations are allocated, the interrupt
3876 * handler is registered with the OS, the watchdog timer is started,
3877 * and the stack is notified that the interface is ready.
3878 **/
3879static int e1000_open(struct net_device *netdev)
3880{
3881 struct e1000_adapter *adapter = netdev_priv(netdev);
3882 struct e1000_hw *hw = &adapter->hw;
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00003883 struct pci_dev *pdev = adapter->pdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003884 int err;
3885
3886 /* disallow open during test */
3887 if (test_bit(__E1000_TESTING, &adapter->state))
3888 return -EBUSY;
3889
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00003890 pm_runtime_get_sync(&pdev->dev);
3891
Jesse Brandeburg9c563d22009-04-17 20:44:34 +00003892 netif_carrier_off(netdev);
3893
Auke Kokbc7f75f2007-09-17 12:30:59 -07003894 /* allocate transmit descriptors */
Bruce Allan55aa6982011-12-16 00:45:45 +00003895 err = e1000e_setup_tx_resources(adapter->tx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003896 if (err)
3897 goto err_setup_tx;
3898
3899 /* allocate receive descriptors */
Bruce Allan55aa6982011-12-16 00:45:45 +00003900 err = e1000e_setup_rx_resources(adapter->rx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003901 if (err)
3902 goto err_setup_rx;
3903
Bruce Allan11b08be2010-05-10 14:59:31 +00003904 /*
3905 * If AMT is enabled, let the firmware know that the network
3906 * interface is now open and reset the part to a known state.
3907 */
3908 if (adapter->flags & FLAG_HAS_AMT) {
Bruce Allan31dbe5b2011-01-06 14:29:52 +00003909 e1000e_get_hw_control(adapter);
Bruce Allan11b08be2010-05-10 14:59:31 +00003910 e1000e_reset(adapter);
3911 }
3912
Auke Kokbc7f75f2007-09-17 12:30:59 -07003913 e1000e_power_up_phy(adapter);
3914
3915 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
3916 if ((adapter->hw.mng_cookie.status &
3917 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
3918 e1000_update_mng_vlan(adapter);
3919
Bruce Allan79d4e902011-12-16 00:46:27 +00003920 /* DMA latency requirement to workaround jumbo issue */
3921 if (adapter->hw.mac.type == e1000_pch2lan)
Linus Torvalds6ba74012010-08-04 11:47:58 -07003922 pm_qos_add_request(&adapter->netdev->pm_qos_req,
3923 PM_QOS_CPU_DMA_LATENCY,
3924 PM_QOS_DEFAULT_VALUE);
Florian Micklerc128ec22010-08-02 14:27:00 +00003925
Bruce Allanad680762008-03-28 09:15:03 -07003926 /*
Bruce Allanad680762008-03-28 09:15:03 -07003927 * before we allocate an interrupt, we must be ready to handle it.
Auke Kokbc7f75f2007-09-17 12:30:59 -07003928 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3929 * as soon as we call pci_request_irq, so we have to setup our
Bruce Allanad680762008-03-28 09:15:03 -07003930 * clean_rx handler before we do so.
3931 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003932 e1000_configure(adapter);
3933
3934 err = e1000_request_irq(adapter);
3935 if (err)
3936 goto err_req_irq;
3937
Bruce Allanf8d59f72008-08-08 18:36:11 -07003938 /*
3939 * Work around PCIe errata with MSI interrupts causing some chipsets to
3940 * ignore e1000e MSI messages, which means we need to test our MSI
3941 * interrupt now
3942 */
Bruce Allan4662e822008-08-26 18:37:06 -07003943 if (adapter->int_mode != E1000E_INT_MODE_LEGACY) {
Bruce Allanf8d59f72008-08-08 18:36:11 -07003944 err = e1000_test_msi(adapter);
3945 if (err) {
3946 e_err("Interrupt allocation failed\n");
3947 goto err_req_irq;
3948 }
3949 }
3950
Auke Kokbc7f75f2007-09-17 12:30:59 -07003951 /* From here on the code is the same as e1000e_up() */
3952 clear_bit(__E1000_DOWN, &adapter->state);
3953
3954 napi_enable(&adapter->napi);
3955
3956 e1000_irq_enable(adapter);
3957
Jeff Kirsher09357b02011-11-18 14:25:00 +00003958 adapter->tx_hang_recheck = false;
Jesse Brandeburg4cb9be72009-04-21 18:42:05 +00003959 netif_start_queue(netdev);
Jeff Kirsherd55b53f2008-07-18 04:33:03 -07003960
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00003961 adapter->idle_check = true;
3962 pm_runtime_put(&pdev->dev);
3963
Auke Kokbc7f75f2007-09-17 12:30:59 -07003964 /* fire a link status change interrupt to start the watchdog */
Bruce Allan52a9b232010-05-10 15:00:10 +00003965 if (adapter->msix_entries)
3966 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
3967 else
3968 ew32(ICS, E1000_ICS_LSC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003969
3970 return 0;
3971
3972err_req_irq:
Bruce Allan31dbe5b2011-01-06 14:29:52 +00003973 e1000e_release_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003974 e1000_power_down_phy(adapter);
Bruce Allan55aa6982011-12-16 00:45:45 +00003975 e1000e_free_rx_resources(adapter->rx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003976err_setup_rx:
Bruce Allan55aa6982011-12-16 00:45:45 +00003977 e1000e_free_tx_resources(adapter->tx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003978err_setup_tx:
3979 e1000e_reset(adapter);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00003980 pm_runtime_put_sync(&pdev->dev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003981
3982 return err;
3983}
3984
3985/**
3986 * e1000_close - Disables a network interface
3987 * @netdev: network interface device structure
3988 *
3989 * Returns 0, this is not allowed to fail
3990 *
3991 * The close entry point is called when an interface is de-activated
3992 * by the OS. The hardware is still under the drivers control, but
3993 * needs to be disabled. A global MAC reset is issued to stop the
3994 * hardware, and all transmit and receive resources are freed.
3995 **/
3996static int e1000_close(struct net_device *netdev)
3997{
3998 struct e1000_adapter *adapter = netdev_priv(netdev);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00003999 struct pci_dev *pdev = adapter->pdev;
Bruce Allanbb9e44d2012-03-21 00:39:12 +00004000 int count = E1000_CHECK_RESET_COUNT;
4001
4002 while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
4003 usleep_range(10000, 20000);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004004
4005 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004006
4007 pm_runtime_get_sync(&pdev->dev);
4008
Bruce Allan5f4a7802011-11-29 08:09:19 +00004009 napi_disable(&adapter->napi);
4010
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004011 if (!test_bit(__E1000_DOWN, &adapter->state)) {
4012 e1000e_down(adapter);
4013 e1000_free_irq(adapter);
4014 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07004015 e1000_power_down_phy(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004016
Bruce Allan55aa6982011-12-16 00:45:45 +00004017 e1000e_free_tx_resources(adapter->tx_ring);
4018 e1000e_free_rx_resources(adapter->rx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004019
Bruce Allanad680762008-03-28 09:15:03 -07004020 /*
4021 * kill manageability vlan ID if supported, but not if a vlan with
4022 * the same ID is registered on the host OS (let 8021q kill it)
4023 */
Jeff Kirsher86d70e52011-03-25 16:01:01 +00004024 if (adapter->hw.mng_cookie.status &
4025 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)
Auke Kokbc7f75f2007-09-17 12:30:59 -07004026 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
4027
Bruce Allanad680762008-03-28 09:15:03 -07004028 /*
4029 * If AMT is enabled, let the firmware know that the network
4030 * interface is now closed
4031 */
Bruce Allan31dbe5b2011-01-06 14:29:52 +00004032 if ((adapter->flags & FLAG_HAS_AMT) &&
4033 !test_bit(__E1000_TESTING, &adapter->state))
4034 e1000e_release_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004035
Bruce Allan79d4e902011-12-16 00:46:27 +00004036 if (adapter->hw.mac.type == e1000_pch2lan)
Linus Torvalds6ba74012010-08-04 11:47:58 -07004037 pm_qos_remove_request(&adapter->netdev->pm_qos_req);
Florian Micklerc128ec22010-08-02 14:27:00 +00004038
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004039 pm_runtime_put_sync(&pdev->dev);
4040
Auke Kokbc7f75f2007-09-17 12:30:59 -07004041 return 0;
4042}
4043/**
4044 * e1000_set_mac - Change the Ethernet Address of the NIC
4045 * @netdev: network interface device structure
4046 * @p: pointer to an address structure
4047 *
4048 * Returns 0 on success, negative on failure
4049 **/
4050static int e1000_set_mac(struct net_device *netdev, void *p)
4051{
4052 struct e1000_adapter *adapter = netdev_priv(netdev);
Bruce Allan69e1e012012-04-14 03:28:50 +00004053 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004054 struct sockaddr *addr = p;
4055
4056 if (!is_valid_ether_addr(addr->sa_data))
4057 return -EADDRNOTAVAIL;
4058
4059 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
4060 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
4061
Bruce Allan69e1e012012-04-14 03:28:50 +00004062 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004063
4064 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) {
4065 /* activate the work around */
4066 e1000e_set_laa_state_82571(&adapter->hw, 1);
4067
Bruce Allanad680762008-03-28 09:15:03 -07004068 /*
4069 * Hold a copy of the LAA in RAR[14] This is done so that
Auke Kokbc7f75f2007-09-17 12:30:59 -07004070 * between the time RAR[0] gets clobbered and the time it
4071 * gets fixed (in e1000_watchdog), the actual LAA is in one
4072 * of the RARs and no incoming packets directed to this port
4073 * are dropped. Eventually the LAA will be in RAR[0] and
Bruce Allanad680762008-03-28 09:15:03 -07004074 * RAR[14]
4075 */
Bruce Allan69e1e012012-04-14 03:28:50 +00004076 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr,
4077 adapter->hw.mac.rar_entry_count - 1);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004078 }
4079
4080 return 0;
4081}
4082
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07004083/**
4084 * e1000e_update_phy_task - work thread to update phy
4085 * @work: pointer to our work struct
4086 *
4087 * this worker thread exists because we must acquire a
4088 * semaphore to read the phy, which we could msleep while
4089 * waiting for it, and we can't msleep in a timer.
4090 **/
4091static void e1000e_update_phy_task(struct work_struct *work)
4092{
4093 struct e1000_adapter *adapter = container_of(work,
4094 struct e1000_adapter, update_phy_task);
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00004095
4096 if (test_bit(__E1000_DOWN, &adapter->state))
4097 return;
4098
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07004099 e1000_get_phy_info(&adapter->hw);
4100}
4101
Bruce Allanad680762008-03-28 09:15:03 -07004102/*
4103 * Need to wait a few seconds after link up to get diagnostic information from
4104 * the phy
4105 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004106static void e1000_update_phy_info(unsigned long data)
4107{
4108 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00004109
4110 if (test_bit(__E1000_DOWN, &adapter->state))
4111 return;
4112
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07004113 schedule_work(&adapter->update_phy_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004114}
4115
4116/**
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004117 * e1000e_update_phy_stats - Update the PHY statistics counters
4118 * @adapter: board private structure
Bruce Allan2b6b1682011-05-13 07:20:09 +00004119 *
4120 * Read/clear the upper 16-bit PHY registers and read/accumulate lower
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004121 **/
4122static void e1000e_update_phy_stats(struct e1000_adapter *adapter)
4123{
4124 struct e1000_hw *hw = &adapter->hw;
4125 s32 ret_val;
4126 u16 phy_data;
4127
4128 ret_val = hw->phy.ops.acquire(hw);
4129 if (ret_val)
4130 return;
4131
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004132 /*
4133 * A page set is expensive so check if already on desired page.
4134 * If not, set to the page with the PHY status registers.
4135 */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004136 hw->phy.addr = 1;
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004137 ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
4138 &phy_data);
4139 if (ret_val)
4140 goto release;
Bruce Allan2b6b1682011-05-13 07:20:09 +00004141 if (phy_data != (HV_STATS_PAGE << IGP_PAGE_SHIFT)) {
4142 ret_val = hw->phy.ops.set_page(hw,
4143 HV_STATS_PAGE << IGP_PAGE_SHIFT);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004144 if (ret_val)
4145 goto release;
4146 }
4147
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004148 /* Single Collision Count */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004149 hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data);
4150 ret_val = hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004151 if (!ret_val)
4152 adapter->stats.scc += phy_data;
4153
4154 /* Excessive Collision Count */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004155 hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data);
4156 ret_val = hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004157 if (!ret_val)
4158 adapter->stats.ecol += phy_data;
4159
4160 /* Multiple Collision Count */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004161 hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data);
4162 ret_val = hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004163 if (!ret_val)
4164 adapter->stats.mcc += phy_data;
4165
4166 /* Late Collision Count */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004167 hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data);
4168 ret_val = hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004169 if (!ret_val)
4170 adapter->stats.latecol += phy_data;
4171
4172 /* Collision Count - also used for adaptive IFS */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004173 hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data);
4174 ret_val = hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004175 if (!ret_val)
4176 hw->mac.collision_delta = phy_data;
4177
4178 /* Defer Count */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004179 hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data);
4180 ret_val = hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004181 if (!ret_val)
4182 adapter->stats.dc += phy_data;
4183
4184 /* Transmit with no CRS */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004185 hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data);
4186 ret_val = hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004187 if (!ret_val)
4188 adapter->stats.tncrs += phy_data;
4189
4190release:
4191 hw->phy.ops.release(hw);
4192}
4193
4194/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07004195 * e1000e_update_stats - Update the board statistics counters
4196 * @adapter: board private structure
4197 **/
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00004198static void e1000e_update_stats(struct e1000_adapter *adapter)
Auke Kokbc7f75f2007-09-17 12:30:59 -07004199{
Ajit Khaparde7274c202009-10-07 02:44:26 +00004200 struct net_device *netdev = adapter->netdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004201 struct e1000_hw *hw = &adapter->hw;
4202 struct pci_dev *pdev = adapter->pdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004203
4204 /*
4205 * Prevent stats update while adapter is being reset, or if the pci
4206 * connection is down.
4207 */
4208 if (adapter->link_speed == 0)
4209 return;
4210 if (pci_channel_offline(pdev))
4211 return;
4212
Auke Kokbc7f75f2007-09-17 12:30:59 -07004213 adapter->stats.crcerrs += er32(CRCERRS);
4214 adapter->stats.gprc += er32(GPRC);
Bruce Allan7c257692008-04-23 11:09:00 -07004215 adapter->stats.gorc += er32(GORCL);
4216 er32(GORCH); /* Clear gorc */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004217 adapter->stats.bprc += er32(BPRC);
4218 adapter->stats.mprc += er32(MPRC);
4219 adapter->stats.roc += er32(ROC);
4220
Auke Kokbc7f75f2007-09-17 12:30:59 -07004221 adapter->stats.mpc += er32(MPC);
Bruce Allana4f58f52009-06-02 11:29:18 +00004222
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004223 /* Half-duplex statistics */
4224 if (adapter->link_duplex == HALF_DUPLEX) {
4225 if (adapter->flags2 & FLAG2_HAS_PHY_STATS) {
4226 e1000e_update_phy_stats(adapter);
4227 } else {
4228 adapter->stats.scc += er32(SCC);
4229 adapter->stats.ecol += er32(ECOL);
4230 adapter->stats.mcc += er32(MCC);
4231 adapter->stats.latecol += er32(LATECOL);
4232 adapter->stats.dc += er32(DC);
Bruce Allana4f58f52009-06-02 11:29:18 +00004233
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004234 hw->mac.collision_delta = er32(COLC);
Bruce Allana4f58f52009-06-02 11:29:18 +00004235
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004236 if ((hw->mac.type != e1000_82574) &&
4237 (hw->mac.type != e1000_82583))
4238 adapter->stats.tncrs += er32(TNCRS);
4239 }
4240 adapter->stats.colc += hw->mac.collision_delta;
Bruce Allana4f58f52009-06-02 11:29:18 +00004241 }
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004242
Auke Kokbc7f75f2007-09-17 12:30:59 -07004243 adapter->stats.xonrxc += er32(XONRXC);
4244 adapter->stats.xontxc += er32(XONTXC);
4245 adapter->stats.xoffrxc += er32(XOFFRXC);
4246 adapter->stats.xofftxc += er32(XOFFTXC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004247 adapter->stats.gptc += er32(GPTC);
Bruce Allan7c257692008-04-23 11:09:00 -07004248 adapter->stats.gotc += er32(GOTCL);
4249 er32(GOTCH); /* Clear gotc */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004250 adapter->stats.rnbc += er32(RNBC);
4251 adapter->stats.ruc += er32(RUC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004252
4253 adapter->stats.mptc += er32(MPTC);
4254 adapter->stats.bptc += er32(BPTC);
4255
4256 /* used for adaptive IFS */
4257
4258 hw->mac.tx_packet_delta = er32(TPT);
4259 adapter->stats.tpt += hw->mac.tx_packet_delta;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004260
4261 adapter->stats.algnerrc += er32(ALGNERRC);
4262 adapter->stats.rxerrc += er32(RXERRC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004263 adapter->stats.cexterr += er32(CEXTERR);
4264 adapter->stats.tsctc += er32(TSCTC);
4265 adapter->stats.tsctfc += er32(TSCTFC);
4266
Auke Kokbc7f75f2007-09-17 12:30:59 -07004267 /* Fill out the OS statistics structure */
Ajit Khaparde7274c202009-10-07 02:44:26 +00004268 netdev->stats.multicast = adapter->stats.mprc;
4269 netdev->stats.collisions = adapter->stats.colc;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004270
4271 /* Rx Errors */
4272
Bruce Allanad680762008-03-28 09:15:03 -07004273 /*
4274 * RLEC on some newer hardware can be incorrect so build
4275 * our own version based on RUC and ROC
4276 */
Ajit Khaparde7274c202009-10-07 02:44:26 +00004277 netdev->stats.rx_errors = adapter->stats.rxerrc +
Auke Kokbc7f75f2007-09-17 12:30:59 -07004278 adapter->stats.crcerrs + adapter->stats.algnerrc +
4279 adapter->stats.ruc + adapter->stats.roc +
4280 adapter->stats.cexterr;
Ajit Khaparde7274c202009-10-07 02:44:26 +00004281 netdev->stats.rx_length_errors = adapter->stats.ruc +
Auke Kokbc7f75f2007-09-17 12:30:59 -07004282 adapter->stats.roc;
Ajit Khaparde7274c202009-10-07 02:44:26 +00004283 netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
4284 netdev->stats.rx_frame_errors = adapter->stats.algnerrc;
4285 netdev->stats.rx_missed_errors = adapter->stats.mpc;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004286
4287 /* Tx Errors */
Ajit Khaparde7274c202009-10-07 02:44:26 +00004288 netdev->stats.tx_errors = adapter->stats.ecol +
Auke Kokbc7f75f2007-09-17 12:30:59 -07004289 adapter->stats.latecol;
Ajit Khaparde7274c202009-10-07 02:44:26 +00004290 netdev->stats.tx_aborted_errors = adapter->stats.ecol;
4291 netdev->stats.tx_window_errors = adapter->stats.latecol;
4292 netdev->stats.tx_carrier_errors = adapter->stats.tncrs;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004293
4294 /* Tx Dropped needs to be maintained elsewhere */
4295
Auke Kokbc7f75f2007-09-17 12:30:59 -07004296 /* Management Stats */
4297 adapter->stats.mgptc += er32(MGTPTC);
4298 adapter->stats.mgprc += er32(MGTPRC);
4299 adapter->stats.mgpdc += er32(MGTPDC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004300}
4301
Bruce Allan7c257692008-04-23 11:09:00 -07004302/**
4303 * e1000_phy_read_status - Update the PHY register status snapshot
4304 * @adapter: board private structure
4305 **/
4306static void e1000_phy_read_status(struct e1000_adapter *adapter)
4307{
4308 struct e1000_hw *hw = &adapter->hw;
4309 struct e1000_phy_regs *phy = &adapter->phy_regs;
Bruce Allan7c257692008-04-23 11:09:00 -07004310
4311 if ((er32(STATUS) & E1000_STATUS_LU) &&
4312 (adapter->hw.phy.media_type == e1000_media_type_copper)) {
Bruce Allan90da0662011-01-06 07:02:53 +00004313 int ret_val;
4314
Bruce Allan7c257692008-04-23 11:09:00 -07004315 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr);
4316 ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr);
4317 ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise);
4318 ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa);
4319 ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion);
4320 ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000);
4321 ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000);
4322 ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus);
4323 if (ret_val)
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004324 e_warn("Error reading PHY register\n");
Bruce Allan7c257692008-04-23 11:09:00 -07004325 } else {
4326 /*
4327 * Do not read PHY registers if link is not up
4328 * Set values to typical power-on defaults
4329 */
4330 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX);
4331 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL |
4332 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE |
4333 BMSR_ERCAP);
4334 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP |
4335 ADVERTISE_ALL | ADVERTISE_CSMA);
4336 phy->lpa = 0;
4337 phy->expansion = EXPANSION_ENABLENPAGE;
4338 phy->ctrl1000 = ADVERTISE_1000FULL;
4339 phy->stat1000 = 0;
4340 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF);
4341 }
Bruce Allan7c257692008-04-23 11:09:00 -07004342}
4343
Auke Kokbc7f75f2007-09-17 12:30:59 -07004344static void e1000_print_link_info(struct e1000_adapter *adapter)
4345{
Auke Kokbc7f75f2007-09-17 12:30:59 -07004346 struct e1000_hw *hw = &adapter->hw;
4347 u32 ctrl = er32(CTRL);
4348
Bruce Allan8f12fe82008-11-21 16:54:43 -08004349 /* Link status message must follow this format for user tools */
Jeff Kirsheref456f82011-11-03 11:40:28 +00004350 printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n",
4351 adapter->netdev->name,
4352 adapter->link_speed,
4353 adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half",
4354 (ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE) ? "Rx/Tx" :
4355 (ctrl & E1000_CTRL_RFCE) ? "Rx" :
4356 (ctrl & E1000_CTRL_TFCE) ? "Tx" : "None");
Auke Kokbc7f75f2007-09-17 12:30:59 -07004357}
4358
Bruce Allan0c6bdb32010-06-17 18:58:43 +00004359static bool e1000e_has_link(struct e1000_adapter *adapter)
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004360{
4361 struct e1000_hw *hw = &adapter->hw;
Rusty Russell3db1cd52011-12-19 13:56:45 +00004362 bool link_active = false;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004363 s32 ret_val = 0;
4364
4365 /*
4366 * get_link_status is set on LSC (link status) interrupt or
4367 * Rx sequence error interrupt. get_link_status will stay
4368 * false until the check_for_link establishes link
4369 * for copper adapters ONLY
4370 */
4371 switch (hw->phy.media_type) {
4372 case e1000_media_type_copper:
4373 if (hw->mac.get_link_status) {
4374 ret_val = hw->mac.ops.check_for_link(hw);
4375 link_active = !hw->mac.get_link_status;
4376 } else {
Rusty Russell3db1cd52011-12-19 13:56:45 +00004377 link_active = true;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004378 }
4379 break;
4380 case e1000_media_type_fiber:
4381 ret_val = hw->mac.ops.check_for_link(hw);
4382 link_active = !!(er32(STATUS) & E1000_STATUS_LU);
4383 break;
4384 case e1000_media_type_internal_serdes:
4385 ret_val = hw->mac.ops.check_for_link(hw);
4386 link_active = adapter->hw.mac.serdes_has_link;
4387 break;
4388 default:
4389 case e1000_media_type_unknown:
4390 break;
4391 }
4392
4393 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) &&
4394 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
4395 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004396 e_info("Gigabit has been disabled, downgrading speed\n");
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004397 }
4398
4399 return link_active;
4400}
4401
4402static void e1000e_enable_receives(struct e1000_adapter *adapter)
4403{
4404 /* make sure the receive unit is started */
4405 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
4406 (adapter->flags & FLAG_RX_RESTART_NOW)) {
4407 struct e1000_hw *hw = &adapter->hw;
4408 u32 rctl = er32(RCTL);
4409 ew32(RCTL, rctl | E1000_RCTL_EN);
4410 adapter->flags &= ~FLAG_RX_RESTART_NOW;
4411 }
4412}
4413
Carolyn Wybornyff10e132010-10-28 00:59:53 +00004414static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter)
4415{
4416 struct e1000_hw *hw = &adapter->hw;
4417
4418 /*
4419 * With 82574 controllers, PHY needs to be checked periodically
4420 * for hung state and reset, if two calls return true
4421 */
4422 if (e1000_check_phy_82574(hw))
4423 adapter->phy_hang_count++;
4424 else
4425 adapter->phy_hang_count = 0;
4426
4427 if (adapter->phy_hang_count > 1) {
4428 adapter->phy_hang_count = 0;
4429 schedule_work(&adapter->reset_task);
4430 }
4431}
4432
Auke Kokbc7f75f2007-09-17 12:30:59 -07004433/**
4434 * e1000_watchdog - Timer Call-back
4435 * @data: pointer to adapter cast into an unsigned long
4436 **/
4437static void e1000_watchdog(unsigned long data)
4438{
4439 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
4440
4441 /* Do the rest outside of interrupt context */
4442 schedule_work(&adapter->watchdog_task);
4443
4444 /* TODO: make this use queue_delayed_work() */
4445}
4446
4447static void e1000_watchdog_task(struct work_struct *work)
4448{
4449 struct e1000_adapter *adapter = container_of(work,
4450 struct e1000_adapter, watchdog_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004451 struct net_device *netdev = adapter->netdev;
4452 struct e1000_mac_info *mac = &adapter->hw.mac;
Bruce Allan75eb0fa2008-11-21 16:53:51 -08004453 struct e1000_phy_info *phy = &adapter->hw.phy;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004454 struct e1000_ring *tx_ring = adapter->tx_ring;
4455 struct e1000_hw *hw = &adapter->hw;
4456 u32 link, tctl;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004457
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00004458 if (test_bit(__E1000_DOWN, &adapter->state))
4459 return;
4460
David S. Millerb405e8d2010-02-04 22:31:41 -08004461 link = e1000e_has_link(adapter);
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004462 if ((netif_carrier_ok(netdev)) && link) {
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004463 /* Cancel scheduled suspend requests. */
4464 pm_runtime_resume(netdev->dev.parent);
4465
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004466 e1000e_enable_receives(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004467 goto link_up;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004468 }
4469
4470 if ((e1000e_enable_tx_pkt_filtering(hw)) &&
4471 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id))
4472 e1000_update_mng_vlan(adapter);
4473
Auke Kokbc7f75f2007-09-17 12:30:59 -07004474 if (link) {
4475 if (!netif_carrier_ok(netdev)) {
Rusty Russell3db1cd52011-12-19 13:56:45 +00004476 bool txb2b = true;
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004477
4478 /* Cancel scheduled suspend requests. */
4479 pm_runtime_resume(netdev->dev.parent);
4480
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004481 /* update snapshot of PHY registers on LSC */
Bruce Allan7c257692008-04-23 11:09:00 -07004482 e1000_phy_read_status(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004483 mac->ops.get_link_up_info(&adapter->hw,
4484 &adapter->link_speed,
4485 &adapter->link_duplex);
4486 e1000_print_link_info(adapter);
Bruce Allanad680762008-03-28 09:15:03 -07004487 /*
Bruce Allanf4187b52008-08-26 18:36:50 -07004488 * On supported PHYs, check for duplex mismatch only
4489 * if link has autonegotiated at 10/100 half
4490 */
4491 if ((hw->phy.type == e1000_phy_igp_3 ||
4492 hw->phy.type == e1000_phy_bm) &&
4493 (hw->mac.autoneg == true) &&
4494 (adapter->link_speed == SPEED_10 ||
4495 adapter->link_speed == SPEED_100) &&
4496 (adapter->link_duplex == HALF_DUPLEX)) {
4497 u16 autoneg_exp;
4498
4499 e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp);
4500
4501 if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS))
Jeff Kirsheref456f82011-11-03 11:40:28 +00004502 e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n");
Bruce Allanf4187b52008-08-26 18:36:50 -07004503 }
4504
Emil Tantilovf49c57e2010-03-24 12:55:02 +00004505 /* adjust timeout factor according to speed/duplex */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004506 adapter->tx_timeout_factor = 1;
4507 switch (adapter->link_speed) {
4508 case SPEED_10:
Rusty Russell3db1cd52011-12-19 13:56:45 +00004509 txb2b = false;
Bruce Allan10f1b492008-08-08 18:36:01 -07004510 adapter->tx_timeout_factor = 16;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004511 break;
4512 case SPEED_100:
Rusty Russell3db1cd52011-12-19 13:56:45 +00004513 txb2b = false;
Bruce Allan4c86e0b2009-11-19 12:35:26 +00004514 adapter->tx_timeout_factor = 10;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004515 break;
4516 }
4517
Bruce Allanad680762008-03-28 09:15:03 -07004518 /*
4519 * workaround: re-program speed mode bit after
4520 * link-up event
4521 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004522 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) &&
4523 !txb2b) {
4524 u32 tarc0;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07004525 tarc0 = er32(TARC(0));
Auke Kokbc7f75f2007-09-17 12:30:59 -07004526 tarc0 &= ~SPEED_MODE_BIT;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07004527 ew32(TARC(0), tarc0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004528 }
4529
Bruce Allanad680762008-03-28 09:15:03 -07004530 /*
4531 * disable TSO for pcie and 10/100 speeds, to avoid
4532 * some hardware issues
4533 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004534 if (!(adapter->flags & FLAG_TSO_FORCE)) {
4535 switch (adapter->link_speed) {
4536 case SPEED_10:
4537 case SPEED_100:
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004538 e_info("10/100 speed: disabling TSO\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07004539 netdev->features &= ~NETIF_F_TSO;
4540 netdev->features &= ~NETIF_F_TSO6;
4541 break;
4542 case SPEED_1000:
4543 netdev->features |= NETIF_F_TSO;
4544 netdev->features |= NETIF_F_TSO6;
4545 break;
4546 default:
4547 /* oops */
4548 break;
4549 }
4550 }
4551
Bruce Allanad680762008-03-28 09:15:03 -07004552 /*
4553 * enable transmits in the hardware, need to do this
4554 * after setting TARC(0)
4555 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004556 tctl = er32(TCTL);
4557 tctl |= E1000_TCTL_EN;
4558 ew32(TCTL, tctl);
4559
Bruce Allan75eb0fa2008-11-21 16:53:51 -08004560 /*
4561 * Perform any post-link-up configuration before
4562 * reporting link up.
4563 */
4564 if (phy->ops.cfg_on_link_up)
4565 phy->ops.cfg_on_link_up(hw);
4566
Auke Kokbc7f75f2007-09-17 12:30:59 -07004567 netif_carrier_on(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004568
4569 if (!test_bit(__E1000_DOWN, &adapter->state))
4570 mod_timer(&adapter->phy_info_timer,
4571 round_jiffies(jiffies + 2 * HZ));
Auke Kokbc7f75f2007-09-17 12:30:59 -07004572 }
4573 } else {
4574 if (netif_carrier_ok(netdev)) {
4575 adapter->link_speed = 0;
4576 adapter->link_duplex = 0;
Bruce Allan8f12fe82008-11-21 16:54:43 -08004577 /* Link status message must follow this format */
4578 printk(KERN_INFO "e1000e: %s NIC Link is Down\n",
4579 adapter->netdev->name);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004580 netif_carrier_off(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004581 if (!test_bit(__E1000_DOWN, &adapter->state))
4582 mod_timer(&adapter->phy_info_timer,
4583 round_jiffies(jiffies + 2 * HZ));
4584
4585 if (adapter->flags & FLAG_RX_NEEDS_RESTART)
4586 schedule_work(&adapter->reset_task);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004587 else
4588 pm_schedule_suspend(netdev->dev.parent,
4589 LINK_TIMEOUT);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004590 }
4591 }
4592
4593link_up:
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00004594 spin_lock(&adapter->stats64_lock);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004595 e1000e_update_stats(adapter);
4596
4597 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
4598 adapter->tpt_old = adapter->stats.tpt;
4599 mac->collision_delta = adapter->stats.colc - adapter->colc_old;
4600 adapter->colc_old = adapter->stats.colc;
4601
Bruce Allan7c257692008-04-23 11:09:00 -07004602 adapter->gorc = adapter->stats.gorc - adapter->gorc_old;
4603 adapter->gorc_old = adapter->stats.gorc;
4604 adapter->gotc = adapter->stats.gotc - adapter->gotc_old;
4605 adapter->gotc_old = adapter->stats.gotc;
Flavio Leitner2084b112011-04-05 04:27:43 +00004606 spin_unlock(&adapter->stats64_lock);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004607
4608 e1000e_update_adaptive(&adapter->hw);
4609
Bruce Allan90da0662011-01-06 07:02:53 +00004610 if (!netif_carrier_ok(netdev) &&
4611 (e1000_desc_unused(tx_ring) + 1 < tx_ring->count)) {
4612 /*
4613 * We've lost link, so the controller stops DMA,
4614 * but we've got queued Tx work that's never going
4615 * to get done, so reset controller to flush Tx.
4616 * (Do the reset outside of interrupt context).
4617 */
Bruce Allan90da0662011-01-06 07:02:53 +00004618 schedule_work(&adapter->reset_task);
4619 /* return immediately since reset is imminent */
4620 return;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004621 }
4622
Jesse Brandeburgeab2abf2010-05-04 22:26:03 +00004623 /* Simple mode for Interrupt Throttle Rate (ITR) */
4624 if (adapter->itr_setting == 4) {
4625 /*
4626 * Symmetric Tx/Rx gets a reduced ITR=2000;
4627 * Total asymmetrical Tx or Rx gets ITR=8000;
4628 * everyone else is between 2000-8000.
4629 */
4630 u32 goc = (adapter->gotc + adapter->gorc) / 10000;
4631 u32 dif = (adapter->gotc > adapter->gorc ?
4632 adapter->gotc - adapter->gorc :
4633 adapter->gorc - adapter->gotc) / 10000;
4634 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
4635
Matthew Vick22a4cca2012-07-12 00:02:42 +00004636 e1000e_write_itr(adapter, itr);
Jesse Brandeburgeab2abf2010-05-04 22:26:03 +00004637 }
4638
Bruce Allanad680762008-03-28 09:15:03 -07004639 /* Cause software interrupt to ensure Rx ring is cleaned */
Bruce Allan4662e822008-08-26 18:37:06 -07004640 if (adapter->msix_entries)
4641 ew32(ICS, adapter->rx_ring->ims_val);
4642 else
4643 ew32(ICS, E1000_ICS_RXDMT0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004644
Jesse Brandeburg713b3c92011-02-02 10:19:50 +00004645 /* flush pending descriptors to memory before detecting Tx hang */
4646 e1000e_flush_descriptors(adapter);
4647
Auke Kokbc7f75f2007-09-17 12:30:59 -07004648 /* Force detection of hung controller every watchdog period */
Rusty Russell3db1cd52011-12-19 13:56:45 +00004649 adapter->detect_tx_hung = true;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004650
Bruce Allanad680762008-03-28 09:15:03 -07004651 /*
4652 * With 82571 controllers, LAA may be overwritten due to controller
4653 * reset from the other port. Set the appropriate LAA in RAR[0]
4654 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004655 if (e1000e_get_laa_state_82571(hw))
Bruce Allan69e1e012012-04-14 03:28:50 +00004656 hw->mac.ops.rar_set(hw, adapter->hw.mac.addr, 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004657
Carolyn Wybornyff10e132010-10-28 00:59:53 +00004658 if (adapter->flags2 & FLAG2_CHECK_PHY_HANG)
4659 e1000e_check_82574_phy_workaround(adapter);
4660
Auke Kokbc7f75f2007-09-17 12:30:59 -07004661 /* Reset the timer */
4662 if (!test_bit(__E1000_DOWN, &adapter->state))
4663 mod_timer(&adapter->watchdog_timer,
4664 round_jiffies(jiffies + 2 * HZ));
4665}
4666
4667#define E1000_TX_FLAGS_CSUM 0x00000001
4668#define E1000_TX_FLAGS_VLAN 0x00000002
4669#define E1000_TX_FLAGS_TSO 0x00000004
4670#define E1000_TX_FLAGS_IPV4 0x00000008
Ben Greear943146d2012-02-11 15:39:40 +00004671#define E1000_TX_FLAGS_NO_FCS 0x00000010
Auke Kokbc7f75f2007-09-17 12:30:59 -07004672#define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
4673#define E1000_TX_FLAGS_VLAN_SHIFT 16
4674
Bruce Allan55aa6982011-12-16 00:45:45 +00004675static int e1000_tso(struct e1000_ring *tx_ring, struct sk_buff *skb)
Auke Kokbc7f75f2007-09-17 12:30:59 -07004676{
Auke Kokbc7f75f2007-09-17 12:30:59 -07004677 struct e1000_context_desc *context_desc;
4678 struct e1000_buffer *buffer_info;
4679 unsigned int i;
4680 u32 cmd_length = 0;
Bruce Allan70443ae2012-08-17 06:18:13 +00004681 u16 ipcse = 0, mss;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004682 u8 ipcss, ipcso, tucss, tucso, hdr_len;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004683
Bruce Allan3d5e33c2009-11-20 23:27:03 +00004684 if (!skb_is_gso(skb))
4685 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004686
Bruce Allan3d5e33c2009-11-20 23:27:03 +00004687 if (skb_header_cloned(skb)) {
Bruce Allan90da0662011-01-06 07:02:53 +00004688 int err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
4689
Bruce Allan3d5e33c2009-11-20 23:27:03 +00004690 if (err)
4691 return err;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004692 }
4693
Bruce Allan3d5e33c2009-11-20 23:27:03 +00004694 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4695 mss = skb_shinfo(skb)->gso_size;
4696 if (skb->protocol == htons(ETH_P_IP)) {
4697 struct iphdr *iph = ip_hdr(skb);
4698 iph->tot_len = 0;
4699 iph->check = 0;
4700 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
4701 0, IPPROTO_TCP, 0);
4702 cmd_length = E1000_TXD_CMD_IP;
4703 ipcse = skb_transport_offset(skb) - 1;
Sridhar Samudrala8e1e8a42010-01-23 02:02:21 -08004704 } else if (skb_is_gso_v6(skb)) {
Bruce Allan3d5e33c2009-11-20 23:27:03 +00004705 ipv6_hdr(skb)->payload_len = 0;
4706 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
4707 &ipv6_hdr(skb)->daddr,
4708 0, IPPROTO_TCP, 0);
4709 ipcse = 0;
4710 }
4711 ipcss = skb_network_offset(skb);
4712 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
4713 tucss = skb_transport_offset(skb);
4714 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
Bruce Allan3d5e33c2009-11-20 23:27:03 +00004715
4716 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
4717 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
4718
4719 i = tx_ring->next_to_use;
4720 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
4721 buffer_info = &tx_ring->buffer_info[i];
4722
4723 context_desc->lower_setup.ip_fields.ipcss = ipcss;
4724 context_desc->lower_setup.ip_fields.ipcso = ipcso;
4725 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
4726 context_desc->upper_setup.tcp_fields.tucss = tucss;
4727 context_desc->upper_setup.tcp_fields.tucso = tucso;
Bruce Allan70443ae2012-08-17 06:18:13 +00004728 context_desc->upper_setup.tcp_fields.tucse = 0;
Bruce Allan3d5e33c2009-11-20 23:27:03 +00004729 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
4730 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
4731 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
4732
4733 buffer_info->time_stamp = jiffies;
4734 buffer_info->next_to_watch = i;
4735
4736 i++;
4737 if (i == tx_ring->count)
4738 i = 0;
4739 tx_ring->next_to_use = i;
4740
4741 return 1;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004742}
4743
Bruce Allan55aa6982011-12-16 00:45:45 +00004744static bool e1000_tx_csum(struct e1000_ring *tx_ring, struct sk_buff *skb)
Auke Kokbc7f75f2007-09-17 12:30:59 -07004745{
Bruce Allan55aa6982011-12-16 00:45:45 +00004746 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004747 struct e1000_context_desc *context_desc;
4748 struct e1000_buffer *buffer_info;
4749 unsigned int i;
4750 u8 css;
Dave Grahamaf807c82008-10-09 14:28:58 -07004751 u32 cmd_len = E1000_TXD_CMD_DEXT;
Arthur Jones5f66f202009-03-19 01:13:08 +00004752 __be16 protocol;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004753
Dave Grahamaf807c82008-10-09 14:28:58 -07004754 if (skb->ip_summed != CHECKSUM_PARTIAL)
4755 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004756
Arthur Jones5f66f202009-03-19 01:13:08 +00004757 if (skb->protocol == cpu_to_be16(ETH_P_8021Q))
4758 protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto;
4759 else
4760 protocol = skb->protocol;
4761
Arthur Jones3f518392009-03-20 15:56:35 -07004762 switch (protocol) {
Harvey Harrison09640e62009-02-01 00:45:17 -08004763 case cpu_to_be16(ETH_P_IP):
Dave Grahamaf807c82008-10-09 14:28:58 -07004764 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
4765 cmd_len |= E1000_TXD_CMD_TCP;
4766 break;
Harvey Harrison09640e62009-02-01 00:45:17 -08004767 case cpu_to_be16(ETH_P_IPV6):
Dave Grahamaf807c82008-10-09 14:28:58 -07004768 /* XXX not handling all IPV6 headers */
4769 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
4770 cmd_len |= E1000_TXD_CMD_TCP;
4771 break;
4772 default:
4773 if (unlikely(net_ratelimit()))
Arthur Jones5f66f202009-03-19 01:13:08 +00004774 e_warn("checksum_partial proto=%x!\n",
4775 be16_to_cpu(protocol));
Dave Grahamaf807c82008-10-09 14:28:58 -07004776 break;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004777 }
4778
Michał Mirosław0d0b1672010-12-14 15:24:08 +00004779 css = skb_checksum_start_offset(skb);
Dave Grahamaf807c82008-10-09 14:28:58 -07004780
4781 i = tx_ring->next_to_use;
4782 buffer_info = &tx_ring->buffer_info[i];
4783 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
4784
4785 context_desc->lower_setup.ip_config = 0;
4786 context_desc->upper_setup.tcp_fields.tucss = css;
4787 context_desc->upper_setup.tcp_fields.tucso =
4788 css + skb->csum_offset;
4789 context_desc->upper_setup.tcp_fields.tucse = 0;
4790 context_desc->tcp_seg_setup.data = 0;
4791 context_desc->cmd_and_length = cpu_to_le32(cmd_len);
4792
4793 buffer_info->time_stamp = jiffies;
4794 buffer_info->next_to_watch = i;
4795
4796 i++;
4797 if (i == tx_ring->count)
4798 i = 0;
4799 tx_ring->next_to_use = i;
4800
4801 return 1;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004802}
4803
Bruce Allan55aa6982011-12-16 00:45:45 +00004804static int e1000_tx_map(struct e1000_ring *tx_ring, struct sk_buff *skb,
4805 unsigned int first, unsigned int max_per_txd,
Bruce Alland821a4c2012-08-24 20:38:11 +00004806 unsigned int nr_frags)
Auke Kokbc7f75f2007-09-17 12:30:59 -07004807{
Bruce Allan55aa6982011-12-16 00:45:45 +00004808 struct e1000_adapter *adapter = tx_ring->adapter;
Alexander Duyck03b13202009-12-02 16:45:31 +00004809 struct pci_dev *pdev = adapter->pdev;
Alexander Duyck1b7719c2009-03-19 01:12:50 +00004810 struct e1000_buffer *buffer_info;
Jesse Brandeburg8ddc9512009-03-02 16:02:53 -08004811 unsigned int len = skb_headlen(skb);
Alexander Duyck03b13202009-12-02 16:45:31 +00004812 unsigned int offset = 0, size, count = 0, i;
Tom Herbert9ed318d2010-05-05 14:02:27 +00004813 unsigned int f, bytecount, segs;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004814
4815 i = tx_ring->next_to_use;
4816
4817 while (len) {
Alexander Duyck1b7719c2009-03-19 01:12:50 +00004818 buffer_info = &tx_ring->buffer_info[i];
Auke Kokbc7f75f2007-09-17 12:30:59 -07004819 size = min(len, max_per_txd);
4820
Auke Kokbc7f75f2007-09-17 12:30:59 -07004821 buffer_info->length = size;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004822 buffer_info->time_stamp = jiffies;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004823 buffer_info->next_to_watch = i;
Nick Nunley0be3f552010-04-27 13:09:05 +00004824 buffer_info->dma = dma_map_single(&pdev->dev,
4825 skb->data + offset,
Bruce Allanaf667a22010-12-31 06:10:01 +00004826 size, DMA_TO_DEVICE);
Alexander Duyck03b13202009-12-02 16:45:31 +00004827 buffer_info->mapped_as_page = false;
Nick Nunley0be3f552010-04-27 13:09:05 +00004828 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
Alexander Duyck03b13202009-12-02 16:45:31 +00004829 goto dma_error;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004830
4831 len -= size;
4832 offset += size;
Alexander Duyck03b13202009-12-02 16:45:31 +00004833 count++;
Alexander Duyck1b7719c2009-03-19 01:12:50 +00004834
4835 if (len) {
4836 i++;
4837 if (i == tx_ring->count)
4838 i = 0;
4839 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07004840 }
4841
4842 for (f = 0; f < nr_frags; f++) {
Eric Dumazet9e903e02011-10-18 21:00:24 +00004843 const struct skb_frag_struct *frag;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004844
4845 frag = &skb_shinfo(skb)->frags[f];
Eric Dumazet9e903e02011-10-18 21:00:24 +00004846 len = skb_frag_size(frag);
Ian Campbell877749b2011-08-29 23:18:26 +00004847 offset = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004848
4849 while (len) {
Alexander Duyck1b7719c2009-03-19 01:12:50 +00004850 i++;
4851 if (i == tx_ring->count)
4852 i = 0;
4853
Auke Kokbc7f75f2007-09-17 12:30:59 -07004854 buffer_info = &tx_ring->buffer_info[i];
4855 size = min(len, max_per_txd);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004856
4857 buffer_info->length = size;
4858 buffer_info->time_stamp = jiffies;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004859 buffer_info->next_to_watch = i;
Ian Campbell877749b2011-08-29 23:18:26 +00004860 buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag,
4861 offset, size, DMA_TO_DEVICE);
Alexander Duyck03b13202009-12-02 16:45:31 +00004862 buffer_info->mapped_as_page = true;
Nick Nunley0be3f552010-04-27 13:09:05 +00004863 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
Alexander Duyck03b13202009-12-02 16:45:31 +00004864 goto dma_error;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004865
4866 len -= size;
4867 offset += size;
4868 count++;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004869 }
4870 }
4871
Bruce Allanaf667a22010-12-31 06:10:01 +00004872 segs = skb_shinfo(skb)->gso_segs ? : 1;
Tom Herbert9ed318d2010-05-05 14:02:27 +00004873 /* multiply data chunks by size of headers */
4874 bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len;
4875
Auke Kokbc7f75f2007-09-17 12:30:59 -07004876 tx_ring->buffer_info[i].skb = skb;
Tom Herbert9ed318d2010-05-05 14:02:27 +00004877 tx_ring->buffer_info[i].segs = segs;
4878 tx_ring->buffer_info[i].bytecount = bytecount;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004879 tx_ring->buffer_info[first].next_to_watch = i;
4880
4881 return count;
Alexander Duyck03b13202009-12-02 16:45:31 +00004882
4883dma_error:
Bruce Allanaf667a22010-12-31 06:10:01 +00004884 dev_err(&pdev->dev, "Tx DMA map failed\n");
Alexander Duyck03b13202009-12-02 16:45:31 +00004885 buffer_info->dma = 0;
Roel Kluinc1fa3472010-01-19 14:21:45 +00004886 if (count)
Alexander Duyck03b13202009-12-02 16:45:31 +00004887 count--;
Roel Kluinc1fa3472010-01-19 14:21:45 +00004888
4889 while (count--) {
Bruce Allanaf667a22010-12-31 06:10:01 +00004890 if (i == 0)
Alexander Duyck03b13202009-12-02 16:45:31 +00004891 i += tx_ring->count;
Roel Kluinc1fa3472010-01-19 14:21:45 +00004892 i--;
Alexander Duyck03b13202009-12-02 16:45:31 +00004893 buffer_info = &tx_ring->buffer_info[i];
Bruce Allan55aa6982011-12-16 00:45:45 +00004894 e1000_put_txbuf(tx_ring, buffer_info);
Alexander Duyck03b13202009-12-02 16:45:31 +00004895 }
4896
4897 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004898}
4899
Bruce Allan55aa6982011-12-16 00:45:45 +00004900static void e1000_tx_queue(struct e1000_ring *tx_ring, int tx_flags, int count)
Auke Kokbc7f75f2007-09-17 12:30:59 -07004901{
Bruce Allan55aa6982011-12-16 00:45:45 +00004902 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004903 struct e1000_tx_desc *tx_desc = NULL;
4904 struct e1000_buffer *buffer_info;
4905 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
4906 unsigned int i;
4907
4908 if (tx_flags & E1000_TX_FLAGS_TSO) {
4909 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
4910 E1000_TXD_CMD_TSE;
4911 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
4912
4913 if (tx_flags & E1000_TX_FLAGS_IPV4)
4914 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
4915 }
4916
4917 if (tx_flags & E1000_TX_FLAGS_CSUM) {
4918 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
4919 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
4920 }
4921
4922 if (tx_flags & E1000_TX_FLAGS_VLAN) {
4923 txd_lower |= E1000_TXD_CMD_VLE;
4924 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
4925 }
4926
Ben Greear943146d2012-02-11 15:39:40 +00004927 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
4928 txd_lower &= ~(E1000_TXD_CMD_IFCS);
4929
Auke Kokbc7f75f2007-09-17 12:30:59 -07004930 i = tx_ring->next_to_use;
4931
Bruce Allan36b973d2010-11-24 07:42:43 +00004932 do {
Auke Kokbc7f75f2007-09-17 12:30:59 -07004933 buffer_info = &tx_ring->buffer_info[i];
4934 tx_desc = E1000_TX_DESC(*tx_ring, i);
4935 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
4936 tx_desc->lower.data =
4937 cpu_to_le32(txd_lower | buffer_info->length);
4938 tx_desc->upper.data = cpu_to_le32(txd_upper);
4939
4940 i++;
4941 if (i == tx_ring->count)
4942 i = 0;
Bruce Allan36b973d2010-11-24 07:42:43 +00004943 } while (--count > 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004944
4945 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
4946
Ben Greear943146d2012-02-11 15:39:40 +00004947 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */
4948 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
4949 tx_desc->lower.data &= ~(cpu_to_le32(E1000_TXD_CMD_IFCS));
4950
Bruce Allanad680762008-03-28 09:15:03 -07004951 /*
4952 * Force memory writes to complete before letting h/w
Auke Kokbc7f75f2007-09-17 12:30:59 -07004953 * know there are new descriptors to fetch. (Only
4954 * applicable for weak-ordered memory model archs,
Bruce Allanad680762008-03-28 09:15:03 -07004955 * such as IA-64).
4956 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004957 wmb();
4958
4959 tx_ring->next_to_use = i;
David S. Miller823dcd22011-08-20 10:39:12 -07004960
4961 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
Bruce Allan55aa6982011-12-16 00:45:45 +00004962 e1000e_update_tdt_wa(tx_ring, i);
David S. Miller823dcd22011-08-20 10:39:12 -07004963 else
Bruce Allanc5083cf2011-12-16 00:45:40 +00004964 writel(i, tx_ring->tail);
David S. Miller823dcd22011-08-20 10:39:12 -07004965
Bruce Allanad680762008-03-28 09:15:03 -07004966 /*
4967 * we need this if more than one processor can write to our tail
4968 * at a time, it synchronizes IO on IA64/Altix systems
4969 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004970 mmiowb();
4971}
4972
4973#define MINIMUM_DHCP_PACKET_SIZE 282
4974static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
4975 struct sk_buff *skb)
4976{
4977 struct e1000_hw *hw = &adapter->hw;
4978 u16 length, offset;
4979
4980 if (vlan_tx_tag_present(skb)) {
Joe Perches8e95a202009-12-03 07:58:21 +00004981 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) &&
4982 (adapter->hw.mng_cookie.status &
Auke Kokbc7f75f2007-09-17 12:30:59 -07004983 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
4984 return 0;
4985 }
4986
4987 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE)
4988 return 0;
4989
4990 if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP))
4991 return 0;
4992
4993 {
4994 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14);
4995 struct udphdr *udp;
4996
4997 if (ip->protocol != IPPROTO_UDP)
4998 return 0;
4999
5000 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
5001 if (ntohs(udp->dest) != 67)
5002 return 0;
5003
5004 offset = (u8 *)udp + 8 - skb->data;
5005 length = skb->len - offset;
5006 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length);
5007 }
5008
5009 return 0;
5010}
5011
Bruce Allan55aa6982011-12-16 00:45:45 +00005012static int __e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005013{
Bruce Allan55aa6982011-12-16 00:45:45 +00005014 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005015
Bruce Allan55aa6982011-12-16 00:45:45 +00005016 netif_stop_queue(adapter->netdev);
Bruce Allanad680762008-03-28 09:15:03 -07005017 /*
5018 * Herbert's original patch had:
Auke Kokbc7f75f2007-09-17 12:30:59 -07005019 * smp_mb__after_netif_stop_queue();
Bruce Allanad680762008-03-28 09:15:03 -07005020 * but since that doesn't exist yet, just open code it.
5021 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005022 smp_mb();
5023
Bruce Allanad680762008-03-28 09:15:03 -07005024 /*
5025 * We need to check again in a case another CPU has just
5026 * made room available.
5027 */
Bruce Allan55aa6982011-12-16 00:45:45 +00005028 if (e1000_desc_unused(tx_ring) < size)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005029 return -EBUSY;
5030
5031 /* A reprieve! */
Bruce Allan55aa6982011-12-16 00:45:45 +00005032 netif_start_queue(adapter->netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005033 ++adapter->restart_queue;
5034 return 0;
5035}
5036
Bruce Allan55aa6982011-12-16 00:45:45 +00005037static int e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005038{
Bruce Alland821a4c2012-08-24 20:38:11 +00005039 BUG_ON(size > tx_ring->count);
5040
Bruce Allan55aa6982011-12-16 00:45:45 +00005041 if (e1000_desc_unused(tx_ring) >= size)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005042 return 0;
Bruce Allan55aa6982011-12-16 00:45:45 +00005043 return __e1000_maybe_stop_tx(tx_ring, size);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005044}
5045
Stephen Hemminger3b29a562009-08-31 19:50:55 +00005046static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
5047 struct net_device *netdev)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005048{
5049 struct e1000_adapter *adapter = netdev_priv(netdev);
5050 struct e1000_ring *tx_ring = adapter->tx_ring;
5051 unsigned int first;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005052 unsigned int tx_flags = 0;
Eric Dumazete743d312010-04-14 15:59:40 -07005053 unsigned int len = skb_headlen(skb);
Auke Kok4e6c7092007-10-05 14:15:23 -07005054 unsigned int nr_frags;
5055 unsigned int mss;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005056 int count = 0;
5057 int tso;
5058 unsigned int f;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005059
5060 if (test_bit(__E1000_DOWN, &adapter->state)) {
5061 dev_kfree_skb_any(skb);
5062 return NETDEV_TX_OK;
5063 }
5064
5065 if (skb->len <= 0) {
5066 dev_kfree_skb_any(skb);
5067 return NETDEV_TX_OK;
5068 }
5069
5070 mss = skb_shinfo(skb)->gso_size;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005071 if (mss) {
5072 u8 hdr_len;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005073
Bruce Allanad680762008-03-28 09:15:03 -07005074 /*
5075 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
5076 * points to just header, pull a few bytes of payload from
5077 * frags into skb->data
5078 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005079 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
Bruce Allanad680762008-03-28 09:15:03 -07005080 /*
5081 * we do this workaround for ES2LAN, but it is un-necessary,
5082 * avoiding it could save a lot of cycles
5083 */
Auke Kok4e6c7092007-10-05 14:15:23 -07005084 if (skb->data_len && (hdr_len == len)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07005085 unsigned int pull_size;
5086
Bruce Allana2a5b322012-01-31 06:37:17 +00005087 pull_size = min_t(unsigned int, 4, skb->data_len);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005088 if (!__pskb_pull_tail(skb, pull_size)) {
Jeff Kirsher44defeb2008-08-04 17:20:41 -07005089 e_err("__pskb_pull_tail failed.\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07005090 dev_kfree_skb_any(skb);
5091 return NETDEV_TX_OK;
5092 }
Eric Dumazete743d312010-04-14 15:59:40 -07005093 len = skb_headlen(skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005094 }
5095 }
5096
5097 /* reserve a descriptor for the offload context */
5098 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
5099 count++;
5100 count++;
5101
Bruce Alland821a4c2012-08-24 20:38:11 +00005102 count += DIV_ROUND_UP(len, adapter->tx_fifo_limit);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005103
5104 nr_frags = skb_shinfo(skb)->nr_frags;
5105 for (f = 0; f < nr_frags; f++)
Bruce Alland821a4c2012-08-24 20:38:11 +00005106 count += DIV_ROUND_UP(skb_frag_size(&skb_shinfo(skb)->frags[f]),
5107 adapter->tx_fifo_limit);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005108
5109 if (adapter->hw.mac.tx_pkt_filtering)
5110 e1000_transfer_dhcp_info(adapter, skb);
5111
Bruce Allanad680762008-03-28 09:15:03 -07005112 /*
5113 * need: count + 2 desc gap to keep tail from touching
5114 * head, otherwise try next time
5115 */
Bruce Allan55aa6982011-12-16 00:45:45 +00005116 if (e1000_maybe_stop_tx(tx_ring, count + 2))
Auke Kokbc7f75f2007-09-17 12:30:59 -07005117 return NETDEV_TX_BUSY;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005118
Jesse Grosseab6d182010-10-20 13:56:03 +00005119 if (vlan_tx_tag_present(skb)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07005120 tx_flags |= E1000_TX_FLAGS_VLAN;
5121 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
5122 }
5123
5124 first = tx_ring->next_to_use;
5125
Bruce Allan55aa6982011-12-16 00:45:45 +00005126 tso = e1000_tso(tx_ring, skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005127 if (tso < 0) {
5128 dev_kfree_skb_any(skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005129 return NETDEV_TX_OK;
5130 }
5131
5132 if (tso)
5133 tx_flags |= E1000_TX_FLAGS_TSO;
Bruce Allan55aa6982011-12-16 00:45:45 +00005134 else if (e1000_tx_csum(tx_ring, skb))
Auke Kokbc7f75f2007-09-17 12:30:59 -07005135 tx_flags |= E1000_TX_FLAGS_CSUM;
5136
Bruce Allanad680762008-03-28 09:15:03 -07005137 /*
5138 * Old method was to assume IPv4 packet by default if TSO was enabled.
Auke Kokbc7f75f2007-09-17 12:30:59 -07005139 * 82571 hardware supports TSO capabilities for IPv6 as well...
Bruce Allanad680762008-03-28 09:15:03 -07005140 * no longer assume, we must.
5141 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005142 if (skb->protocol == htons(ETH_P_IP))
5143 tx_flags |= E1000_TX_FLAGS_IPV4;
5144
Ben Greear943146d2012-02-11 15:39:40 +00005145 if (unlikely(skb->no_fcs))
5146 tx_flags |= E1000_TX_FLAGS_NO_FCS;
5147
Lucas De Marchi25985ed2011-03-30 22:57:33 -03005148 /* if count is 0 then mapping error has occurred */
Bruce Alland821a4c2012-08-24 20:38:11 +00005149 count = e1000_tx_map(tx_ring, skb, first, adapter->tx_fifo_limit,
5150 nr_frags);
Alexander Duyck1b7719c2009-03-19 01:12:50 +00005151 if (count) {
Willem de Bruijn80be3122012-04-27 09:04:05 +00005152 skb_tx_timestamp(skb);
5153
Tom Herbert3f0cfa32011-11-28 16:33:16 +00005154 netdev_sent_queue(netdev, skb->len);
Bruce Allan55aa6982011-12-16 00:45:45 +00005155 e1000_tx_queue(tx_ring, tx_flags, count);
Alexander Duyck1b7719c2009-03-19 01:12:50 +00005156 /* Make sure there is space in the ring for the next send. */
Bruce Alland821a4c2012-08-24 20:38:11 +00005157 e1000_maybe_stop_tx(tx_ring,
5158 (MAX_SKB_FRAGS *
5159 DIV_ROUND_UP(PAGE_SIZE,
5160 adapter->tx_fifo_limit) + 2));
Alexander Duyck1b7719c2009-03-19 01:12:50 +00005161 } else {
Auke Kokbc7f75f2007-09-17 12:30:59 -07005162 dev_kfree_skb_any(skb);
Alexander Duyck1b7719c2009-03-19 01:12:50 +00005163 tx_ring->buffer_info[first].time_stamp = 0;
5164 tx_ring->next_to_use = first;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005165 }
5166
Auke Kokbc7f75f2007-09-17 12:30:59 -07005167 return NETDEV_TX_OK;
5168}
5169
5170/**
5171 * e1000_tx_timeout - Respond to a Tx Hang
5172 * @netdev: network interface device structure
5173 **/
5174static void e1000_tx_timeout(struct net_device *netdev)
5175{
5176 struct e1000_adapter *adapter = netdev_priv(netdev);
5177
5178 /* Do the reset outside of interrupt context */
5179 adapter->tx_timeout_count++;
5180 schedule_work(&adapter->reset_task);
5181}
5182
5183static void e1000_reset_task(struct work_struct *work)
5184{
5185 struct e1000_adapter *adapter;
5186 adapter = container_of(work, struct e1000_adapter, reset_task);
5187
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00005188 /* don't run the task if already down */
5189 if (test_bit(__E1000_DOWN, &adapter->state))
5190 return;
5191
Carolyn Wybornyaffa9df2010-10-28 00:59:55 +00005192 if (!((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
5193 (adapter->flags & FLAG_RX_RESTART_NOW))) {
5194 e1000e_dump(adapter);
5195 e_err("Reset adapter\n");
5196 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07005197 e1000e_reinit_locked(adapter);
5198}
5199
5200/**
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00005201 * e1000_get_stats64 - Get System Network Statistics
Auke Kokbc7f75f2007-09-17 12:30:59 -07005202 * @netdev: network interface device structure
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00005203 * @stats: rtnl_link_stats64 pointer
Auke Kokbc7f75f2007-09-17 12:30:59 -07005204 *
5205 * Returns the address of the device statistics structure.
Auke Kokbc7f75f2007-09-17 12:30:59 -07005206 **/
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00005207struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev,
5208 struct rtnl_link_stats64 *stats)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005209{
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00005210 struct e1000_adapter *adapter = netdev_priv(netdev);
5211
5212 memset(stats, 0, sizeof(struct rtnl_link_stats64));
5213 spin_lock(&adapter->stats64_lock);
5214 e1000e_update_stats(adapter);
5215 /* Fill out the OS statistics structure */
5216 stats->rx_bytes = adapter->stats.gorc;
5217 stats->rx_packets = adapter->stats.gprc;
5218 stats->tx_bytes = adapter->stats.gotc;
5219 stats->tx_packets = adapter->stats.gptc;
5220 stats->multicast = adapter->stats.mprc;
5221 stats->collisions = adapter->stats.colc;
5222
5223 /* Rx Errors */
5224
5225 /*
5226 * RLEC on some newer hardware can be incorrect so build
5227 * our own version based on RUC and ROC
5228 */
5229 stats->rx_errors = adapter->stats.rxerrc +
5230 adapter->stats.crcerrs + adapter->stats.algnerrc +
5231 adapter->stats.ruc + adapter->stats.roc +
5232 adapter->stats.cexterr;
5233 stats->rx_length_errors = adapter->stats.ruc +
5234 adapter->stats.roc;
5235 stats->rx_crc_errors = adapter->stats.crcerrs;
5236 stats->rx_frame_errors = adapter->stats.algnerrc;
5237 stats->rx_missed_errors = adapter->stats.mpc;
5238
5239 /* Tx Errors */
5240 stats->tx_errors = adapter->stats.ecol +
5241 adapter->stats.latecol;
5242 stats->tx_aborted_errors = adapter->stats.ecol;
5243 stats->tx_window_errors = adapter->stats.latecol;
5244 stats->tx_carrier_errors = adapter->stats.tncrs;
5245
5246 /* Tx Dropped needs to be maintained elsewhere */
5247
5248 spin_unlock(&adapter->stats64_lock);
5249 return stats;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005250}
5251
5252/**
5253 * e1000_change_mtu - Change the Maximum Transfer Unit
5254 * @netdev: network interface device structure
5255 * @new_mtu: new value for maximum frame size
5256 *
5257 * Returns 0 on success, negative on failure
5258 **/
5259static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
5260{
5261 struct e1000_adapter *adapter = netdev_priv(netdev);
5262 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
5263
Bruce Allan2adc55c2009-06-02 11:28:58 +00005264 /* Jumbo frame support */
Bruce Allan2e1706f2012-06-30 20:02:42 +00005265 if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) &&
5266 !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
5267 e_err("Jumbo Frames not supported.\n");
5268 return -EINVAL;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005269 }
5270
Bruce Allan2adc55c2009-06-02 11:28:58 +00005271 /* Supported frame sizes */
5272 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) ||
5273 (max_frame > adapter->max_hw_frame_size)) {
5274 e_err("Unsupported MTU setting\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07005275 return -EINVAL;
5276 }
5277
Bruce Allan2fbe4522012-04-19 03:21:47 +00005278 /* Jumbo frame workaround on 82579 and newer requires CRC be stripped */
5279 if ((adapter->hw.mac.type >= e1000_pch2lan) &&
Bruce Allana1ce6472010-09-22 17:16:40 +00005280 !(adapter->flags2 & FLAG2_CRC_STRIPPING) &&
5281 (new_mtu > ETH_DATA_LEN)) {
Bruce Allan2fbe4522012-04-19 03:21:47 +00005282 e_err("Jumbo Frames not supported on this device when CRC stripping is disabled.\n");
Bruce Allana1ce6472010-09-22 17:16:40 +00005283 return -EINVAL;
5284 }
5285
Auke Kokbc7f75f2007-09-17 12:30:59 -07005286 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
Bruce Allan1bba4382011-03-19 00:27:20 +00005287 usleep_range(1000, 2000);
Bruce Allan610c9922009-11-19 12:35:45 +00005288 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07005289 adapter->max_frame_size = max_frame;
Bruce Allan610c9922009-11-19 12:35:45 +00005290 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu);
5291 netdev->mtu = new_mtu;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005292 if (netif_running(netdev))
5293 e1000e_down(adapter);
5294
Bruce Allanad680762008-03-28 09:15:03 -07005295 /*
5296 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
Auke Kokbc7f75f2007-09-17 12:30:59 -07005297 * means we reserve 2 more, this pushes us to allocate from the next
5298 * larger slab size.
Bruce Allanad680762008-03-28 09:15:03 -07005299 * i.e. RXBUFFER_2048 --> size-4096 slab
Bruce Allan97ac8ca2008-04-29 09:16:05 -07005300 * However with the new *_jumbo_rx* routines, jumbo receives will use
5301 * fragmented skbs
Bruce Allanad680762008-03-28 09:15:03 -07005302 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005303
Jesse Brandeburg99261462010-01-22 22:56:16 +00005304 if (max_frame <= 2048)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005305 adapter->rx_buffer_len = 2048;
5306 else
5307 adapter->rx_buffer_len = 4096;
5308
5309 /* adjust allocation if LPE protects us, and we aren't using SBP */
5310 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
5311 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
5312 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN
Bruce Allanad680762008-03-28 09:15:03 -07005313 + ETH_FCS_LEN;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005314
Auke Kokbc7f75f2007-09-17 12:30:59 -07005315 if (netif_running(netdev))
5316 e1000e_up(adapter);
5317 else
5318 e1000e_reset(adapter);
5319
5320 clear_bit(__E1000_RESETTING, &adapter->state);
5321
5322 return 0;
5323}
5324
5325static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
5326 int cmd)
5327{
5328 struct e1000_adapter *adapter = netdev_priv(netdev);
5329 struct mii_ioctl_data *data = if_mii(ifr);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005330
Jeff Kirsher318a94d2008-03-28 09:15:16 -07005331 if (adapter->hw.phy.media_type != e1000_media_type_copper)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005332 return -EOPNOTSUPP;
5333
5334 switch (cmd) {
5335 case SIOCGMIIPHY:
5336 data->phy_id = adapter->hw.phy.addr;
5337 break;
5338 case SIOCGMIIREG:
Bruce Allanb16a0022009-11-20 23:24:30 +00005339 e1000_phy_read_status(adapter);
5340
Bruce Allan7c257692008-04-23 11:09:00 -07005341 switch (data->reg_num & 0x1F) {
5342 case MII_BMCR:
5343 data->val_out = adapter->phy_regs.bmcr;
5344 break;
5345 case MII_BMSR:
5346 data->val_out = adapter->phy_regs.bmsr;
5347 break;
5348 case MII_PHYSID1:
5349 data->val_out = (adapter->hw.phy.id >> 16);
5350 break;
5351 case MII_PHYSID2:
5352 data->val_out = (adapter->hw.phy.id & 0xFFFF);
5353 break;
5354 case MII_ADVERTISE:
5355 data->val_out = adapter->phy_regs.advertise;
5356 break;
5357 case MII_LPA:
5358 data->val_out = adapter->phy_regs.lpa;
5359 break;
5360 case MII_EXPANSION:
5361 data->val_out = adapter->phy_regs.expansion;
5362 break;
5363 case MII_CTRL1000:
5364 data->val_out = adapter->phy_regs.ctrl1000;
5365 break;
5366 case MII_STAT1000:
5367 data->val_out = adapter->phy_regs.stat1000;
5368 break;
5369 case MII_ESTATUS:
5370 data->val_out = adapter->phy_regs.estatus;
5371 break;
5372 default:
Auke Kokbc7f75f2007-09-17 12:30:59 -07005373 return -EIO;
5374 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07005375 break;
5376 case SIOCSMIIREG:
5377 default:
5378 return -EOPNOTSUPP;
5379 }
5380 return 0;
5381}
5382
5383static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
5384{
5385 switch (cmd) {
5386 case SIOCGMIIPHY:
5387 case SIOCGMIIREG:
5388 case SIOCSMIIREG:
5389 return e1000_mii_ioctl(netdev, ifr, cmd);
5390 default:
5391 return -EOPNOTSUPP;
5392 }
5393}
5394
Bruce Allana4f58f52009-06-02 11:29:18 +00005395static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc)
5396{
5397 struct e1000_hw *hw = &adapter->hw;
5398 u32 i, mac_reg;
Bruce Allan2b6b1682011-05-13 07:20:09 +00005399 u16 phy_reg, wuc_enable;
Bruce Allana4f58f52009-06-02 11:29:18 +00005400 int retval = 0;
5401
5402 /* copy MAC RARs to PHY RARs */
Bruce Alland3738bb2010-06-16 13:27:28 +00005403 e1000_copy_rx_addrs_to_phy_ich8lan(hw);
Bruce Allana4f58f52009-06-02 11:29:18 +00005404
Bruce Allan2b6b1682011-05-13 07:20:09 +00005405 retval = hw->phy.ops.acquire(hw);
5406 if (retval) {
5407 e_err("Could not acquire PHY\n");
5408 return retval;
5409 }
5410
5411 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */
5412 retval = e1000_enable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
5413 if (retval)
Bruce Allan75ce1532012-02-08 02:54:48 +00005414 goto release;
Bruce Allan2b6b1682011-05-13 07:20:09 +00005415
5416 /* copy MAC MTA to PHY MTA - only needed for pchlan */
Bruce Allana4f58f52009-06-02 11:29:18 +00005417 for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) {
5418 mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i);
Bruce Allan2b6b1682011-05-13 07:20:09 +00005419 hw->phy.ops.write_reg_page(hw, BM_MTA(i),
5420 (u16)(mac_reg & 0xFFFF));
5421 hw->phy.ops.write_reg_page(hw, BM_MTA(i) + 1,
5422 (u16)((mac_reg >> 16) & 0xFFFF));
Bruce Allana4f58f52009-06-02 11:29:18 +00005423 }
5424
5425 /* configure PHY Rx Control register */
Bruce Allan2b6b1682011-05-13 07:20:09 +00005426 hw->phy.ops.read_reg_page(&adapter->hw, BM_RCTL, &phy_reg);
Bruce Allana4f58f52009-06-02 11:29:18 +00005427 mac_reg = er32(RCTL);
5428 if (mac_reg & E1000_RCTL_UPE)
5429 phy_reg |= BM_RCTL_UPE;
5430 if (mac_reg & E1000_RCTL_MPE)
5431 phy_reg |= BM_RCTL_MPE;
5432 phy_reg &= ~(BM_RCTL_MO_MASK);
5433 if (mac_reg & E1000_RCTL_MO_3)
5434 phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT)
5435 << BM_RCTL_MO_SHIFT);
5436 if (mac_reg & E1000_RCTL_BAM)
5437 phy_reg |= BM_RCTL_BAM;
5438 if (mac_reg & E1000_RCTL_PMCF)
5439 phy_reg |= BM_RCTL_PMCF;
5440 mac_reg = er32(CTRL);
5441 if (mac_reg & E1000_CTRL_RFCE)
5442 phy_reg |= BM_RCTL_RFCE;
Bruce Allan2b6b1682011-05-13 07:20:09 +00005443 hw->phy.ops.write_reg_page(&adapter->hw, BM_RCTL, phy_reg);
Bruce Allana4f58f52009-06-02 11:29:18 +00005444
5445 /* enable PHY wakeup in MAC register */
5446 ew32(WUFC, wufc);
5447 ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN);
5448
5449 /* configure and enable PHY wakeup in PHY registers */
Bruce Allan2b6b1682011-05-13 07:20:09 +00005450 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUFC, wufc);
5451 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUC, E1000_WUC_PME_EN);
Bruce Allana4f58f52009-06-02 11:29:18 +00005452
5453 /* activate PHY wakeup */
Bruce Allan2b6b1682011-05-13 07:20:09 +00005454 wuc_enable |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT;
5455 retval = e1000_disable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
Bruce Allana4f58f52009-06-02 11:29:18 +00005456 if (retval)
5457 e_err("Could not set PHY Host Wakeup bit\n");
Bruce Allan75ce1532012-02-08 02:54:48 +00005458release:
Bruce Allan94d81862009-11-20 23:25:26 +00005459 hw->phy.ops.release(hw);
Bruce Allana4f58f52009-06-02 11:29:18 +00005460
5461 return retval;
5462}
5463
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005464static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake,
5465 bool runtime)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005466{
5467 struct net_device *netdev = pci_get_drvdata(pdev);
5468 struct e1000_adapter *adapter = netdev_priv(netdev);
5469 struct e1000_hw *hw = &adapter->hw;
5470 u32 ctrl, ctrl_ext, rctl, status;
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005471 /* Runtime suspend should only enable wakeup for link changes */
5472 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005473 int retval = 0;
5474
5475 netif_device_detach(netdev);
5476
5477 if (netif_running(netdev)) {
Bruce Allanbb9e44d2012-03-21 00:39:12 +00005478 int count = E1000_CHECK_RESET_COUNT;
5479
5480 while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
5481 usleep_range(10000, 20000);
5482
Auke Kokbc7f75f2007-09-17 12:30:59 -07005483 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
5484 e1000e_down(adapter);
5485 e1000_free_irq(adapter);
5486 }
Bruce Allan4662e822008-08-26 18:37:06 -07005487 e1000e_reset_interrupt_capability(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005488
5489 retval = pci_save_state(pdev);
5490 if (retval)
5491 return retval;
5492
5493 status = er32(STATUS);
5494 if (status & E1000_STATUS_LU)
5495 wufc &= ~E1000_WUFC_LNKC;
5496
5497 if (wufc) {
5498 e1000_setup_rctl(adapter);
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00005499 e1000e_set_rx_mode(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005500
5501 /* turn on all-multi mode if wake on multicast is enabled */
5502 if (wufc & E1000_WUFC_MC) {
5503 rctl = er32(RCTL);
5504 rctl |= E1000_RCTL_MPE;
5505 ew32(RCTL, rctl);
5506 }
5507
5508 ctrl = er32(CTRL);
5509 /* advertise wake from D3Cold */
5510 #define E1000_CTRL_ADVD3WUC 0x00100000
5511 /* phy power management enable */
5512 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
Bruce Allana4f58f52009-06-02 11:29:18 +00005513 ctrl |= E1000_CTRL_ADVD3WUC;
5514 if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP))
5515 ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005516 ew32(CTRL, ctrl);
5517
Jeff Kirsher318a94d2008-03-28 09:15:16 -07005518 if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
5519 adapter->hw.phy.media_type ==
5520 e1000_media_type_internal_serdes) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07005521 /* keep the laser running in D3 */
5522 ctrl_ext = er32(CTRL_EXT);
Bruce Allan93a23f42009-12-08 07:27:41 +00005523 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005524 ew32(CTRL_EXT, ctrl_ext);
5525 }
5526
Bruce Allan97ac8ca2008-04-29 09:16:05 -07005527 if (adapter->flags & FLAG_IS_ICH)
Bruce Allan99730e42011-05-13 07:19:48 +00005528 e1000_suspend_workarounds_ich8lan(&adapter->hw);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07005529
Auke Kokbc7f75f2007-09-17 12:30:59 -07005530 /* Allow time for pending master requests to run */
5531 e1000e_disable_pcie_master(&adapter->hw);
5532
Bruce Allan82776a42009-08-14 14:35:33 +00005533 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
Bruce Allana4f58f52009-06-02 11:29:18 +00005534 /* enable wakeup by the PHY */
5535 retval = e1000_init_phy_wakeup(adapter, wufc);
5536 if (retval)
5537 return retval;
5538 } else {
5539 /* enable wakeup by the MAC */
5540 ew32(WUFC, wufc);
5541 ew32(WUC, E1000_WUC_PME_EN);
5542 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07005543 } else {
5544 ew32(WUC, 0);
5545 ew32(WUFC, 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005546 }
5547
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005548 *enable_wake = !!wufc;
5549
Auke Kokbc7f75f2007-09-17 12:30:59 -07005550 /* make sure adapter isn't asleep if manageability is enabled */
Bruce Allan82776a42009-08-14 14:35:33 +00005551 if ((adapter->flags & FLAG_MNG_PT_ENABLED) ||
5552 (hw->mac.ops.check_mng_mode(hw)))
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005553 *enable_wake = true;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005554
5555 if (adapter->hw.phy.type == e1000_phy_igp_3)
5556 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw);
5557
Bruce Allanad680762008-03-28 09:15:03 -07005558 /*
5559 * Release control of h/w to f/w. If f/w is AMT enabled, this
5560 * would have already happened in close and is redundant.
5561 */
Bruce Allan31dbe5b2011-01-06 14:29:52 +00005562 e1000e_release_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005563
5564 pci_disable_device(pdev);
5565
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005566 return 0;
5567}
5568
5569static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake)
5570{
5571 if (sleep && wake) {
5572 pci_prepare_to_sleep(pdev);
5573 return;
5574 }
5575
5576 pci_wake_from_d3(pdev, wake);
5577 pci_set_power_state(pdev, PCI_D3hot);
5578}
5579
5580static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep,
5581 bool wake)
5582{
5583 struct net_device *netdev = pci_get_drvdata(pdev);
5584 struct e1000_adapter *adapter = netdev_priv(netdev);
5585
Alexander Duyck005cbdf2008-11-21 16:49:10 -08005586 /*
5587 * The pci-e switch on some quad port adapters will report a
5588 * correctable error when the MAC transitions from D0 to D3. To
5589 * prevent this we need to mask off the correctable errors on the
5590 * downstream port of the pci-e switch.
5591 */
5592 if (adapter->flags & FLAG_IS_QUAD_PORT) {
5593 struct pci_dev *us_dev = pdev->bus->self;
Alexander Duyck005cbdf2008-11-21 16:49:10 -08005594 u16 devctl;
5595
Jiang Liuf8c0fca2012-08-20 13:30:43 -06005596 pcie_capability_read_word(us_dev, PCI_EXP_DEVCTL, &devctl);
5597 pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL,
5598 (devctl & ~PCI_EXP_DEVCTL_CERE));
Alexander Duyck005cbdf2008-11-21 16:49:10 -08005599
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005600 e1000_power_off(pdev, sleep, wake);
Alexander Duyck005cbdf2008-11-21 16:49:10 -08005601
Jiang Liuf8c0fca2012-08-20 13:30:43 -06005602 pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL, devctl);
Alexander Duyck005cbdf2008-11-21 16:49:10 -08005603 } else {
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005604 e1000_power_off(pdev, sleep, wake);
Alexander Duyck005cbdf2008-11-21 16:49:10 -08005605 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07005606}
5607
Bruce Allan6f461f62010-04-27 03:33:04 +00005608#ifdef CONFIG_PCIEASPM
5609static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
5610{
Yinghai Lu9f728f52011-05-12 17:11:47 -07005611 pci_disable_link_state_locked(pdev, state);
Bruce Allan6f461f62010-04-27 03:33:04 +00005612}
5613#else
5614static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
Auke Kok1eae4eb2007-10-31 15:22:00 -07005615{
Auke Kok1eae4eb2007-10-31 15:22:00 -07005616 /*
Bruce Allan6f461f62010-04-27 03:33:04 +00005617 * Both device and parent should have the same ASPM setting.
5618 * Disable ASPM in downstream component first and then upstream.
Auke Kok1eae4eb2007-10-31 15:22:00 -07005619 */
Jiang Liuf8c0fca2012-08-20 13:30:43 -06005620 pcie_capability_clear_word(pdev, PCI_EXP_LNKCTL, state);
Bruce Allan6f461f62010-04-27 03:33:04 +00005621
Jiang Liuf8c0fca2012-08-20 13:30:43 -06005622 if (pdev->bus->self)
5623 pcie_capability_clear_word(pdev->bus->self, PCI_EXP_LNKCTL,
5624 state);
Bruce Allan6f461f62010-04-27 03:33:04 +00005625}
5626#endif
Bruce Allan78cd29d2011-03-24 03:09:03 +00005627static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
Bruce Allan6f461f62010-04-27 03:33:04 +00005628{
5629 dev_info(&pdev->dev, "Disabling ASPM %s %s\n",
5630 (state & PCIE_LINK_STATE_L0S) ? "L0s" : "",
5631 (state & PCIE_LINK_STATE_L1) ? "L1" : "");
5632
5633 __e1000e_disable_aspm(pdev, state);
Auke Kok1eae4eb2007-10-31 15:22:00 -07005634}
5635
Rafael J. Wysockiaa338602011-02-11 00:06:54 +01005636#ifdef CONFIG_PM
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005637static bool e1000e_pm_ready(struct e1000_adapter *adapter)
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005638{
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005639 return !!adapter->tx_ring->buffer_info;
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005640}
5641
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005642static int __e1000_resume(struct pci_dev *pdev)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005643{
5644 struct net_device *netdev = pci_get_drvdata(pdev);
5645 struct e1000_adapter *adapter = netdev_priv(netdev);
5646 struct e1000_hw *hw = &adapter->hw;
Bruce Allan78cd29d2011-03-24 03:09:03 +00005647 u16 aspm_disable_flag = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005648 u32 err;
5649
Bruce Allan78cd29d2011-03-24 03:09:03 +00005650 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
5651 aspm_disable_flag = PCIE_LINK_STATE_L0S;
5652 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
5653 aspm_disable_flag |= PCIE_LINK_STATE_L1;
5654 if (aspm_disable_flag)
5655 e1000e_disable_aspm(pdev, aspm_disable_flag);
5656
Auke Kokbc7f75f2007-09-17 12:30:59 -07005657 pci_set_power_state(pdev, PCI_D0);
5658 pci_restore_state(pdev);
Bruce Allan28b8f042010-01-07 16:30:56 +00005659 pci_save_state(pdev);
Taku Izumi6e4f6f62008-06-20 11:57:02 +09005660
Bruce Allan4662e822008-08-26 18:37:06 -07005661 e1000e_set_interrupt_capability(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005662 if (netif_running(netdev)) {
5663 err = e1000_request_irq(adapter);
5664 if (err)
5665 return err;
5666 }
5667
Bruce Allan2fbe4522012-04-19 03:21:47 +00005668 if (hw->mac.type >= e1000_pch2lan)
Bruce Allan99730e42011-05-13 07:19:48 +00005669 e1000_resume_workarounds_pchlan(&adapter->hw);
5670
Auke Kokbc7f75f2007-09-17 12:30:59 -07005671 e1000e_power_up_phy(adapter);
Bruce Allana4f58f52009-06-02 11:29:18 +00005672
5673 /* report the system wakeup cause from S3/S4 */
5674 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
5675 u16 phy_data;
5676
5677 e1e_rphy(&adapter->hw, BM_WUS, &phy_data);
5678 if (phy_data) {
5679 e_info("PHY Wakeup cause - %s\n",
5680 phy_data & E1000_WUS_EX ? "Unicast Packet" :
5681 phy_data & E1000_WUS_MC ? "Multicast Packet" :
5682 phy_data & E1000_WUS_BC ? "Broadcast Packet" :
5683 phy_data & E1000_WUS_MAG ? "Magic Packet" :
Jeff Kirsheref456f82011-11-03 11:40:28 +00005684 phy_data & E1000_WUS_LNKC ?
5685 "Link Status Change" : "other");
Bruce Allana4f58f52009-06-02 11:29:18 +00005686 }
5687 e1e_wphy(&adapter->hw, BM_WUS, ~0);
5688 } else {
5689 u32 wus = er32(WUS);
5690 if (wus) {
5691 e_info("MAC Wakeup cause - %s\n",
5692 wus & E1000_WUS_EX ? "Unicast Packet" :
5693 wus & E1000_WUS_MC ? "Multicast Packet" :
5694 wus & E1000_WUS_BC ? "Broadcast Packet" :
5695 wus & E1000_WUS_MAG ? "Magic Packet" :
5696 wus & E1000_WUS_LNKC ? "Link Status Change" :
5697 "other");
5698 }
5699 ew32(WUS, ~0);
5700 }
5701
Auke Kokbc7f75f2007-09-17 12:30:59 -07005702 e1000e_reset(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005703
Bruce Allancd791612010-05-10 14:59:51 +00005704 e1000_init_manageability_pt(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005705
5706 if (netif_running(netdev))
5707 e1000e_up(adapter);
5708
5709 netif_device_attach(netdev);
5710
Bruce Allanad680762008-03-28 09:15:03 -07005711 /*
5712 * If the controller has AMT, do not set DRV_LOAD until the interface
Auke Kokbc7f75f2007-09-17 12:30:59 -07005713 * is up. For all other cases, let the f/w know that the h/w is now
Bruce Allanad680762008-03-28 09:15:03 -07005714 * under the control of the driver.
5715 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07005716 if (!(adapter->flags & FLAG_HAS_AMT))
Bruce Allan31dbe5b2011-01-06 14:29:52 +00005717 e1000e_get_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005718
5719 return 0;
5720}
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005721
Rafael J. Wysockia0340162010-03-17 23:12:24 -07005722#ifdef CONFIG_PM_SLEEP
5723static int e1000_suspend(struct device *dev)
5724{
5725 struct pci_dev *pdev = to_pci_dev(dev);
5726 int retval;
5727 bool wake;
5728
5729 retval = __e1000_shutdown(pdev, &wake, false);
5730 if (!retval)
5731 e1000_complete_shutdown(pdev, true, wake);
5732
5733 return retval;
5734}
5735
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005736static int e1000_resume(struct device *dev)
5737{
5738 struct pci_dev *pdev = to_pci_dev(dev);
5739 struct net_device *netdev = pci_get_drvdata(pdev);
5740 struct e1000_adapter *adapter = netdev_priv(netdev);
5741
5742 if (e1000e_pm_ready(adapter))
5743 adapter->idle_check = true;
5744
5745 return __e1000_resume(pdev);
5746}
Rafael J. Wysockia0340162010-03-17 23:12:24 -07005747#endif /* CONFIG_PM_SLEEP */
5748
5749#ifdef CONFIG_PM_RUNTIME
5750static int e1000_runtime_suspend(struct device *dev)
5751{
5752 struct pci_dev *pdev = to_pci_dev(dev);
5753 struct net_device *netdev = pci_get_drvdata(pdev);
5754 struct e1000_adapter *adapter = netdev_priv(netdev);
5755
5756 if (e1000e_pm_ready(adapter)) {
5757 bool wake;
5758
5759 __e1000_shutdown(pdev, &wake, true);
5760 }
5761
5762 return 0;
5763}
5764
5765static int e1000_idle(struct device *dev)
5766{
5767 struct pci_dev *pdev = to_pci_dev(dev);
5768 struct net_device *netdev = pci_get_drvdata(pdev);
5769 struct e1000_adapter *adapter = netdev_priv(netdev);
5770
5771 if (!e1000e_pm_ready(adapter))
5772 return 0;
5773
5774 if (adapter->idle_check) {
5775 adapter->idle_check = false;
5776 if (!e1000e_has_link(adapter))
5777 pm_schedule_suspend(dev, MSEC_PER_SEC);
5778 }
5779
5780 return -EBUSY;
5781}
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005782
5783static int e1000_runtime_resume(struct device *dev)
5784{
5785 struct pci_dev *pdev = to_pci_dev(dev);
5786 struct net_device *netdev = pci_get_drvdata(pdev);
5787 struct e1000_adapter *adapter = netdev_priv(netdev);
5788
5789 if (!e1000e_pm_ready(adapter))
5790 return 0;
5791
5792 adapter->idle_check = !dev->power.runtime_auto;
5793 return __e1000_resume(pdev);
5794}
Rafael J. Wysockia0340162010-03-17 23:12:24 -07005795#endif /* CONFIG_PM_RUNTIME */
Rafael J. Wysockiaa338602011-02-11 00:06:54 +01005796#endif /* CONFIG_PM */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005797
5798static void e1000_shutdown(struct pci_dev *pdev)
5799{
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005800 bool wake = false;
5801
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005802 __e1000_shutdown(pdev, &wake, false);
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005803
5804 if (system_state == SYSTEM_POWER_OFF)
5805 e1000_complete_shutdown(pdev, false, wake);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005806}
5807
5808#ifdef CONFIG_NET_POLL_CONTROLLER
Dongdong Deng147b2c82010-11-16 19:50:15 -08005809
5810static irqreturn_t e1000_intr_msix(int irq, void *data)
5811{
5812 struct net_device *netdev = data;
5813 struct e1000_adapter *adapter = netdev_priv(netdev);
Dongdong Deng147b2c82010-11-16 19:50:15 -08005814
5815 if (adapter->msix_entries) {
Bruce Allan90da0662011-01-06 07:02:53 +00005816 int vector, msix_irq;
5817
Dongdong Deng147b2c82010-11-16 19:50:15 -08005818 vector = 0;
5819 msix_irq = adapter->msix_entries[vector].vector;
5820 disable_irq(msix_irq);
5821 e1000_intr_msix_rx(msix_irq, netdev);
5822 enable_irq(msix_irq);
5823
5824 vector++;
5825 msix_irq = adapter->msix_entries[vector].vector;
5826 disable_irq(msix_irq);
5827 e1000_intr_msix_tx(msix_irq, netdev);
5828 enable_irq(msix_irq);
5829
5830 vector++;
5831 msix_irq = adapter->msix_entries[vector].vector;
5832 disable_irq(msix_irq);
5833 e1000_msix_other(msix_irq, netdev);
5834 enable_irq(msix_irq);
5835 }
5836
5837 return IRQ_HANDLED;
5838}
5839
Auke Kokbc7f75f2007-09-17 12:30:59 -07005840/*
5841 * Polling 'interrupt' - used by things like netconsole to send skbs
5842 * without having to re-enable interrupts. It's not called while
5843 * the interrupt routine is executing.
5844 */
5845static void e1000_netpoll(struct net_device *netdev)
5846{
5847 struct e1000_adapter *adapter = netdev_priv(netdev);
5848
Dongdong Deng147b2c82010-11-16 19:50:15 -08005849 switch (adapter->int_mode) {
5850 case E1000E_INT_MODE_MSIX:
5851 e1000_intr_msix(adapter->pdev->irq, netdev);
5852 break;
5853 case E1000E_INT_MODE_MSI:
5854 disable_irq(adapter->pdev->irq);
5855 e1000_intr_msi(adapter->pdev->irq, netdev);
5856 enable_irq(adapter->pdev->irq);
5857 break;
5858 default: /* E1000E_INT_MODE_LEGACY */
5859 disable_irq(adapter->pdev->irq);
5860 e1000_intr(adapter->pdev->irq, netdev);
5861 enable_irq(adapter->pdev->irq);
5862 break;
5863 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07005864}
5865#endif
5866
5867/**
5868 * e1000_io_error_detected - called when PCI error is detected
5869 * @pdev: Pointer to PCI device
5870 * @state: The current pci connection state
5871 *
5872 * This function is called after a PCI bus error affecting
5873 * this device has been detected.
5874 */
5875static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
5876 pci_channel_state_t state)
5877{
5878 struct net_device *netdev = pci_get_drvdata(pdev);
5879 struct e1000_adapter *adapter = netdev_priv(netdev);
5880
5881 netif_device_detach(netdev);
5882
Mike Masonc93b5a72009-06-30 12:45:53 +00005883 if (state == pci_channel_io_perm_failure)
5884 return PCI_ERS_RESULT_DISCONNECT;
5885
Auke Kokbc7f75f2007-09-17 12:30:59 -07005886 if (netif_running(netdev))
5887 e1000e_down(adapter);
5888 pci_disable_device(pdev);
5889
5890 /* Request a slot slot reset. */
5891 return PCI_ERS_RESULT_NEED_RESET;
5892}
5893
5894/**
5895 * e1000_io_slot_reset - called after the pci bus has been reset.
5896 * @pdev: Pointer to PCI device
5897 *
5898 * Restart the card from scratch, as if from a cold-boot. Implementation
5899 * resembles the first-half of the e1000_resume routine.
5900 */
5901static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
5902{
5903 struct net_device *netdev = pci_get_drvdata(pdev);
5904 struct e1000_adapter *adapter = netdev_priv(netdev);
5905 struct e1000_hw *hw = &adapter->hw;
Bruce Allan78cd29d2011-03-24 03:09:03 +00005906 u16 aspm_disable_flag = 0;
Taku Izumi6e4f6f62008-06-20 11:57:02 +09005907 int err;
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00005908 pci_ers_result_t result;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005909
Bruce Allan78cd29d2011-03-24 03:09:03 +00005910 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
5911 aspm_disable_flag = PCIE_LINK_STATE_L0S;
Bruce Allan6f461f62010-04-27 03:33:04 +00005912 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
Bruce Allan78cd29d2011-03-24 03:09:03 +00005913 aspm_disable_flag |= PCIE_LINK_STATE_L1;
5914 if (aspm_disable_flag)
5915 e1000e_disable_aspm(pdev, aspm_disable_flag);
5916
Bruce Allanf0f422e2008-08-04 17:21:53 -07005917 err = pci_enable_device_mem(pdev);
Taku Izumi6e4f6f62008-06-20 11:57:02 +09005918 if (err) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07005919 dev_err(&pdev->dev,
5920 "Cannot re-enable PCI device after reset.\n");
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00005921 result = PCI_ERS_RESULT_DISCONNECT;
5922 } else {
5923 pci_set_master(pdev);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005924 pdev->state_saved = true;
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00005925 pci_restore_state(pdev);
5926
5927 pci_enable_wake(pdev, PCI_D3hot, 0);
5928 pci_enable_wake(pdev, PCI_D3cold, 0);
5929
5930 e1000e_reset(adapter);
5931 ew32(WUS, ~0);
5932 result = PCI_ERS_RESULT_RECOVERED;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005933 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07005934
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00005935 pci_cleanup_aer_uncorrect_error_status(pdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005936
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00005937 return result;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005938}
5939
5940/**
5941 * e1000_io_resume - called when traffic can start flowing again.
5942 * @pdev: Pointer to PCI device
5943 *
5944 * This callback is called when the error recovery driver tells us that
5945 * its OK to resume normal operation. Implementation resembles the
5946 * second-half of the e1000_resume routine.
5947 */
5948static void e1000_io_resume(struct pci_dev *pdev)
5949{
5950 struct net_device *netdev = pci_get_drvdata(pdev);
5951 struct e1000_adapter *adapter = netdev_priv(netdev);
5952
Bruce Allancd791612010-05-10 14:59:51 +00005953 e1000_init_manageability_pt(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005954
5955 if (netif_running(netdev)) {
5956 if (e1000e_up(adapter)) {
5957 dev_err(&pdev->dev,
5958 "can't bring device back up after reset\n");
5959 return;
5960 }
5961 }
5962
5963 netif_device_attach(netdev);
5964
Bruce Allanad680762008-03-28 09:15:03 -07005965 /*
5966 * If the controller has AMT, do not set DRV_LOAD until the interface
Auke Kokbc7f75f2007-09-17 12:30:59 -07005967 * is up. For all other cases, let the f/w know that the h/w is now
Bruce Allanad680762008-03-28 09:15:03 -07005968 * under the control of the driver.
5969 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07005970 if (!(adapter->flags & FLAG_HAS_AMT))
Bruce Allan31dbe5b2011-01-06 14:29:52 +00005971 e1000e_get_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005972
5973}
5974
5975static void e1000_print_device_info(struct e1000_adapter *adapter)
5976{
5977 struct e1000_hw *hw = &adapter->hw;
5978 struct net_device *netdev = adapter->netdev;
Bruce Allan073287c2010-11-24 06:01:51 +00005979 u32 ret_val;
5980 u8 pba_str[E1000_PBANUM_LENGTH];
Auke Kokbc7f75f2007-09-17 12:30:59 -07005981
5982 /* print bus type/speed/width info */
Bruce Allana5cc7642011-03-19 00:31:23 +00005983 e_info("(PCI Express:2.5GT/s:%s) %pM\n",
Jeff Kirsher44defeb2008-08-04 17:20:41 -07005984 /* bus width */
5985 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
5986 "Width x1"),
5987 /* MAC address */
Johannes Berg7c510e42008-10-27 17:47:26 -07005988 netdev->dev_addr);
Jeff Kirsher44defeb2008-08-04 17:20:41 -07005989 e_info("Intel(R) PRO/%s Network Connection\n",
5990 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000");
Bruce Allan073287c2010-11-24 06:01:51 +00005991 ret_val = e1000_read_pba_string_generic(hw, pba_str,
5992 E1000_PBANUM_LENGTH);
5993 if (ret_val)
Bruce Allanf2315bf2011-12-16 00:46:59 +00005994 strlcpy((char *)pba_str, "Unknown", sizeof(pba_str));
Bruce Allan073287c2010-11-24 06:01:51 +00005995 e_info("MAC: %d, PHY: %d, PBA No: %s\n",
5996 hw->mac.type, hw->phy.type, pba_str);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005997}
5998
Auke Kok10aa4c02008-08-04 17:21:20 -07005999static void e1000_eeprom_checks(struct e1000_adapter *adapter)
6000{
6001 struct e1000_hw *hw = &adapter->hw;
6002 int ret_val;
6003 u16 buf = 0;
6004
6005 if (hw->mac.type != e1000_82573)
6006 return;
6007
6008 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf);
Bruce Allane885d762012-01-31 06:37:32 +00006009 le16_to_cpus(&buf);
6010 if (!ret_val && (!(buf & (1 << 0)))) {
Auke Kok10aa4c02008-08-04 17:21:20 -07006011 /* Deep Smart Power Down (DSPD) */
Frans Pop6c2a9ef2008-09-22 14:52:22 -07006012 dev_warn(&adapter->pdev->dev,
6013 "Warning: detected DSPD enabled in EEPROM\n");
Auke Kok10aa4c02008-08-04 17:21:20 -07006014 }
Auke Kok10aa4c02008-08-04 17:21:20 -07006015}
6016
Michał Mirosławc8f44af2011-11-15 15:29:55 +00006017static int e1000_set_features(struct net_device *netdev,
Bruce Allan70495a52012-01-11 01:26:50 +00006018 netdev_features_t features)
Bruce Allandc221292011-08-19 03:23:48 +00006019{
6020 struct e1000_adapter *adapter = netdev_priv(netdev);
Michał Mirosławc8f44af2011-11-15 15:29:55 +00006021 netdev_features_t changed = features ^ netdev->features;
Bruce Allandc221292011-08-19 03:23:48 +00006022
6023 if (changed & (NETIF_F_TSO | NETIF_F_TSO6))
6024 adapter->flags |= FLAG_TSO_FORCE;
6025
6026 if (!(changed & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX |
Ben Greearcf955e62012-02-11 15:39:51 +00006027 NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_RXFCS |
6028 NETIF_F_RXALL)))
Bruce Allandc221292011-08-19 03:23:48 +00006029 return 0;
6030
Ben Greear01840392012-02-11 15:39:25 +00006031 if (changed & NETIF_F_RXFCS) {
6032 if (features & NETIF_F_RXFCS) {
6033 adapter->flags2 &= ~FLAG2_CRC_STRIPPING;
6034 } else {
6035 /* We need to take it back to defaults, which might mean
6036 * stripping is still disabled at the adapter level.
6037 */
6038 if (adapter->flags2 & FLAG2_DFLT_CRC_STRIPPING)
6039 adapter->flags2 |= FLAG2_CRC_STRIPPING;
6040 else
6041 adapter->flags2 &= ~FLAG2_CRC_STRIPPING;
6042 }
6043 }
6044
Bruce Allan70495a52012-01-11 01:26:50 +00006045 netdev->features = features;
6046
Bruce Allandc221292011-08-19 03:23:48 +00006047 if (netif_running(netdev))
6048 e1000e_reinit_locked(adapter);
6049 else
6050 e1000e_reset(adapter);
6051
6052 return 0;
6053}
6054
Stephen Hemminger651c2462008-11-19 21:57:48 -08006055static const struct net_device_ops e1000e_netdev_ops = {
6056 .ndo_open = e1000_open,
6057 .ndo_stop = e1000_close,
Stephen Hemminger00829822008-11-20 20:14:53 -08006058 .ndo_start_xmit = e1000_xmit_frame,
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00006059 .ndo_get_stats64 = e1000e_get_stats64,
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00006060 .ndo_set_rx_mode = e1000e_set_rx_mode,
Stephen Hemminger651c2462008-11-19 21:57:48 -08006061 .ndo_set_mac_address = e1000_set_mac,
6062 .ndo_change_mtu = e1000_change_mtu,
6063 .ndo_do_ioctl = e1000_ioctl,
6064 .ndo_tx_timeout = e1000_tx_timeout,
6065 .ndo_validate_addr = eth_validate_addr,
6066
Stephen Hemminger651c2462008-11-19 21:57:48 -08006067 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid,
6068 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid,
6069#ifdef CONFIG_NET_POLL_CONTROLLER
6070 .ndo_poll_controller = e1000_netpoll,
6071#endif
Bruce Allandc221292011-08-19 03:23:48 +00006072 .ndo_set_features = e1000_set_features,
Stephen Hemminger651c2462008-11-19 21:57:48 -08006073};
6074
Auke Kokbc7f75f2007-09-17 12:30:59 -07006075/**
6076 * e1000_probe - Device Initialization Routine
6077 * @pdev: PCI device information struct
6078 * @ent: entry in e1000_pci_tbl
6079 *
6080 * Returns 0 on success, negative on failure
6081 *
6082 * e1000_probe initializes an adapter identified by a pci_dev structure.
6083 * The OS initialization, configuring of the adapter private structure,
6084 * and a hardware reset occur.
6085 **/
6086static int __devinit e1000_probe(struct pci_dev *pdev,
6087 const struct pci_device_id *ent)
6088{
6089 struct net_device *netdev;
6090 struct e1000_adapter *adapter;
6091 struct e1000_hw *hw;
6092 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data];
Becky Brucef47e81f2008-05-01 18:03:11 -05006093 resource_size_t mmio_start, mmio_len;
6094 resource_size_t flash_start, flash_len;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006095 static int cards_found;
Bruce Allan78cd29d2011-03-24 03:09:03 +00006096 u16 aspm_disable_flag = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006097 int i, err, pci_using_dac;
6098 u16 eeprom_data = 0;
6099 u16 eeprom_apme_mask = E1000_EEPROM_APME;
6100
Bruce Allan78cd29d2011-03-24 03:09:03 +00006101 if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S)
6102 aspm_disable_flag = PCIE_LINK_STATE_L0S;
Bruce Allan6f461f62010-04-27 03:33:04 +00006103 if (ei->flags2 & FLAG2_DISABLE_ASPM_L1)
Bruce Allan78cd29d2011-03-24 03:09:03 +00006104 aspm_disable_flag |= PCIE_LINK_STATE_L1;
6105 if (aspm_disable_flag)
6106 e1000e_disable_aspm(pdev, aspm_disable_flag);
Taku Izumi6e4f6f62008-06-20 11:57:02 +09006107
Bruce Allanf0f422e2008-08-04 17:21:53 -07006108 err = pci_enable_device_mem(pdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006109 if (err)
6110 return err;
6111
6112 pci_using_dac = 0;
Nick Nunley0be3f552010-04-27 13:09:05 +00006113 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006114 if (!err) {
Nick Nunley0be3f552010-04-27 13:09:05 +00006115 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006116 if (!err)
6117 pci_using_dac = 1;
6118 } else {
Nick Nunley0be3f552010-04-27 13:09:05 +00006119 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006120 if (err) {
Nick Nunley0be3f552010-04-27 13:09:05 +00006121 err = dma_set_coherent_mask(&pdev->dev,
6122 DMA_BIT_MASK(32));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006123 if (err) {
Jeff Kirsheref456f82011-11-03 11:40:28 +00006124 dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07006125 goto err_dma;
6126 }
6127 }
6128 }
6129
Arjan van de Vene8de1482008-10-22 19:55:31 -07006130 err = pci_request_selected_regions_exclusive(pdev,
Bruce Allanf0f422e2008-08-04 17:21:53 -07006131 pci_select_bars(pdev, IORESOURCE_MEM),
6132 e1000e_driver_name);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006133 if (err)
6134 goto err_pci_reg;
6135
Xiaotian Feng68eac462009-08-14 14:35:52 +00006136 /* AER (Advanced Error Reporting) hooks */
Frans Pop19d5afd2009-10-02 10:04:12 -07006137 pci_enable_pcie_error_reporting(pdev);
Xiaotian Feng68eac462009-08-14 14:35:52 +00006138
Auke Kokbc7f75f2007-09-17 12:30:59 -07006139 pci_set_master(pdev);
Bruce Allan438b3652008-11-21 16:51:33 -08006140 /* PCI config space info */
6141 err = pci_save_state(pdev);
6142 if (err)
6143 goto err_alloc_etherdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006144
6145 err = -ENOMEM;
6146 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
6147 if (!netdev)
6148 goto err_alloc_etherdev;
6149
Auke Kokbc7f75f2007-09-17 12:30:59 -07006150 SET_NETDEV_DEV(netdev, &pdev->dev);
6151
Tom Herbertf85e4df2010-05-05 14:03:32 +00006152 netdev->irq = pdev->irq;
6153
Auke Kokbc7f75f2007-09-17 12:30:59 -07006154 pci_set_drvdata(pdev, netdev);
6155 adapter = netdev_priv(netdev);
6156 hw = &adapter->hw;
6157 adapter->netdev = netdev;
6158 adapter->pdev = pdev;
6159 adapter->ei = ei;
6160 adapter->pba = ei->pba;
6161 adapter->flags = ei->flags;
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +00006162 adapter->flags2 = ei->flags2;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006163 adapter->hw.adapter = adapter;
6164 adapter->hw.mac.type = ei->mac;
Bruce Allan2adc55c2009-06-02 11:28:58 +00006165 adapter->max_hw_frame_size = ei->max_hw_frame_size;
stephen hemmingerb3f4d592012-03-13 06:04:20 +00006166 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006167
6168 mmio_start = pci_resource_start(pdev, 0);
6169 mmio_len = pci_resource_len(pdev, 0);
6170
6171 err = -EIO;
6172 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
6173 if (!adapter->hw.hw_addr)
6174 goto err_ioremap;
6175
6176 if ((adapter->flags & FLAG_HAS_FLASH) &&
6177 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
6178 flash_start = pci_resource_start(pdev, 1);
6179 flash_len = pci_resource_len(pdev, 1);
6180 adapter->hw.flash_address = ioremap(flash_start, flash_len);
6181 if (!adapter->hw.flash_address)
6182 goto err_flashmap;
6183 }
6184
6185 /* construct the net_device struct */
Stephen Hemminger651c2462008-11-19 21:57:48 -08006186 netdev->netdev_ops = &e1000e_netdev_ops;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006187 e1000e_set_ethtool_ops(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006188 netdev->watchdog_timeo = 5 * HZ;
Bruce Allanc58c8a72012-03-20 03:48:19 +00006189 netif_napi_add(netdev, &adapter->napi, e1000e_poll, 64);
Bruce Allanf2315bf2011-12-16 00:46:59 +00006190 strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006191
6192 netdev->mem_start = mmio_start;
6193 netdev->mem_end = mmio_start + mmio_len;
6194
6195 adapter->bd_number = cards_found++;
6196
Bruce Allan4662e822008-08-26 18:37:06 -07006197 e1000e_check_options(adapter);
6198
Auke Kokbc7f75f2007-09-17 12:30:59 -07006199 /* setup adapter struct */
6200 err = e1000_sw_init(adapter);
6201 if (err)
6202 goto err_sw_init;
6203
Auke Kokbc7f75f2007-09-17 12:30:59 -07006204 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
6205 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
6206 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
6207
Jeff Kirsher69e3fd82008-04-02 13:48:18 -07006208 err = ei->get_variants(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006209 if (err)
6210 goto err_hw_init;
6211
Bruce Allan4a770352008-10-01 17:18:35 -07006212 if ((adapter->flags & FLAG_IS_ICH) &&
6213 (adapter->flags & FLAG_READ_ONLY_NVM))
6214 e1000e_write_protect_nvm_ich8lan(&adapter->hw);
6215
Auke Kokbc7f75f2007-09-17 12:30:59 -07006216 hw->mac.ops.get_bus_info(&adapter->hw);
6217
Jeff Kirsher318a94d2008-03-28 09:15:16 -07006218 adapter->hw.phy.autoneg_wait_to_complete = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006219
6220 /* Copper options */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07006221 if (adapter->hw.phy.media_type == e1000_media_type_copper) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07006222 adapter->hw.phy.mdix = AUTO_ALL_MODES;
6223 adapter->hw.phy.disable_polarity_correction = 0;
6224 adapter->hw.phy.ms_type = e1000_ms_hw_default;
6225 }
6226
Bruce Allan470a5422012-05-26 06:08:48 +00006227 if (hw->phy.ops.check_reset_block && hw->phy.ops.check_reset_block(hw))
Bruce Allan185095f2012-06-07 02:23:37 +00006228 dev_info(&pdev->dev,
6229 "PHY reset is blocked due to SOL/IDER session.\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07006230
Bruce Allandc221292011-08-19 03:23:48 +00006231 /* Set initial default active device features */
6232 netdev->features = (NETIF_F_SG |
6233 NETIF_F_HW_VLAN_RX |
6234 NETIF_F_HW_VLAN_TX |
6235 NETIF_F_TSO |
6236 NETIF_F_TSO6 |
Bruce Allan70495a52012-01-11 01:26:50 +00006237 NETIF_F_RXHASH |
Bruce Allandc221292011-08-19 03:23:48 +00006238 NETIF_F_RXCSUM |
6239 NETIF_F_HW_CSUM);
6240
6241 /* Set user-changeable features (subset of all device features) */
6242 netdev->hw_features = netdev->features;
Ben Greear01840392012-02-11 15:39:25 +00006243 netdev->hw_features |= NETIF_F_RXFCS;
Ben Greear943146d2012-02-11 15:39:40 +00006244 netdev->priv_flags |= IFF_SUPP_NOFCS;
Ben Greearcf955e62012-02-11 15:39:51 +00006245 netdev->hw_features |= NETIF_F_RXALL;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006246
6247 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
6248 netdev->features |= NETIF_F_HW_VLAN_FILTER;
6249
Bruce Allandc221292011-08-19 03:23:48 +00006250 netdev->vlan_features |= (NETIF_F_SG |
6251 NETIF_F_TSO |
6252 NETIF_F_TSO6 |
6253 NETIF_F_HW_CSUM);
Jeff Kirshera5136e22008-06-05 04:07:28 -07006254
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00006255 netdev->priv_flags |= IFF_UNICAST_FLT;
6256
Yi Zou7b872a52010-09-22 17:57:58 +00006257 if (pci_using_dac) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07006258 netdev->features |= NETIF_F_HIGHDMA;
Yi Zou7b872a52010-09-22 17:57:58 +00006259 netdev->vlan_features |= NETIF_F_HIGHDMA;
6260 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07006261
Auke Kokbc7f75f2007-09-17 12:30:59 -07006262 if (e1000e_enable_mng_pass_thru(&adapter->hw))
6263 adapter->flags |= FLAG_MNG_PT_ENABLED;
6264
Bruce Allanad680762008-03-28 09:15:03 -07006265 /*
6266 * before reading the NVM, reset the controller to
6267 * put the device in a known good starting state
6268 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07006269 adapter->hw.mac.ops.reset_hw(&adapter->hw);
6270
6271 /*
6272 * systems with ASPM and others may see the checksum fail on the first
6273 * attempt. Let's give it a few tries
6274 */
6275 for (i = 0;; i++) {
6276 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0)
6277 break;
6278 if (i == 2) {
Bruce Allan185095f2012-06-07 02:23:37 +00006279 dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07006280 err = -EIO;
6281 goto err_eeprom;
6282 }
6283 }
6284
Auke Kok10aa4c02008-08-04 17:21:20 -07006285 e1000_eeprom_checks(adapter);
6286
Bruce Allan608f8a02010-01-13 02:04:58 +00006287 /* copy the MAC address */
Auke Kokbc7f75f2007-09-17 12:30:59 -07006288 if (e1000e_read_mac_addr(&adapter->hw))
Bruce Allan185095f2012-06-07 02:23:37 +00006289 dev_err(&pdev->dev,
6290 "NVM Read Error while reading MAC address\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07006291
6292 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
6293 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
6294
6295 if (!is_valid_ether_addr(netdev->perm_addr)) {
Bruce Allan185095f2012-06-07 02:23:37 +00006296 dev_err(&pdev->dev, "Invalid MAC Address: %pM\n",
6297 netdev->perm_addr);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006298 err = -EIO;
6299 goto err_eeprom;
6300 }
6301
6302 init_timer(&adapter->watchdog_timer);
Joe Perchesc061b182010-08-23 18:20:03 +00006303 adapter->watchdog_timer.function = e1000_watchdog;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006304 adapter->watchdog_timer.data = (unsigned long) adapter;
6305
6306 init_timer(&adapter->phy_info_timer);
Joe Perchesc061b182010-08-23 18:20:03 +00006307 adapter->phy_info_timer.function = e1000_update_phy_info;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006308 adapter->phy_info_timer.data = (unsigned long) adapter;
6309
6310 INIT_WORK(&adapter->reset_task, e1000_reset_task);
6311 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07006312 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround);
6313 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task);
Bruce Allan41cec6f2009-11-20 23:28:56 +00006314 INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006315
Auke Kokbc7f75f2007-09-17 12:30:59 -07006316 /* Initialize link parameters. User can change them with ethtool */
6317 adapter->hw.mac.autoneg = 1;
Rusty Russell3db1cd52011-12-19 13:56:45 +00006318 adapter->fc_autoneg = true;
Bruce Allan5c48ef3e22008-11-21 16:57:36 -08006319 adapter->hw.fc.requested_mode = e1000_fc_default;
6320 adapter->hw.fc.current_mode = e1000_fc_default;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006321 adapter->hw.phy.autoneg_advertised = 0x2f;
6322
6323 /* ring size defaults */
Bruce Alland821a4c2012-08-24 20:38:11 +00006324 adapter->rx_ring->count = E1000_DEFAULT_RXD;
6325 adapter->tx_ring->count = E1000_DEFAULT_TXD;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006326
6327 /*
6328 * Initial Wake on LAN setting - If APM wake is enabled in
6329 * the EEPROM, enable the ACPI Magic Packet filter
6330 */
6331 if (adapter->flags & FLAG_APME_IN_WUC) {
6332 /* APME bit in EEPROM is mapped to WUC.APME */
6333 eeprom_data = er32(WUC);
6334 eeprom_apme_mask = E1000_WUC_APME;
Bruce Allan4def99b2011-02-02 09:30:36 +00006335 if ((hw->mac.type > e1000_ich10lan) &&
6336 (eeprom_data & E1000_WUC_PHY_WAKE))
Bruce Allana4f58f52009-06-02 11:29:18 +00006337 adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006338 } else if (adapter->flags & FLAG_APME_IN_CTRL3) {
6339 if (adapter->flags & FLAG_APME_CHECK_PORT_B &&
6340 (adapter->hw.bus.func == 1))
Bruce Allan3d3a1672012-02-23 03:13:18 +00006341 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_B,
6342 1, &eeprom_data);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006343 else
Bruce Allan3d3a1672012-02-23 03:13:18 +00006344 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_A,
6345 1, &eeprom_data);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006346 }
6347
6348 /* fetch WoL from EEPROM */
6349 if (eeprom_data & eeprom_apme_mask)
6350 adapter->eeprom_wol |= E1000_WUFC_MAG;
6351
6352 /*
6353 * now that we have the eeprom settings, apply the special cases
6354 * where the eeprom may be wrong or the board simply won't support
6355 * wake on lan on a particular port
6356 */
6357 if (!(adapter->flags & FLAG_HAS_WOL))
6358 adapter->eeprom_wol = 0;
6359
6360 /* initialize the wol settings based on the eeprom settings */
6361 adapter->wol = adapter->eeprom_wol;
\"Rafael J. Wysocki\6ff68022008-11-12 09:52:32 +00006362 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006363
Bruce Allan84527592008-11-21 17:00:22 -08006364 /* save off EEPROM version number */
6365 e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers);
6366
Auke Kokbc7f75f2007-09-17 12:30:59 -07006367 /* reset the hardware with the new settings */
6368 e1000e_reset(adapter);
6369
Bruce Allanad680762008-03-28 09:15:03 -07006370 /*
6371 * If the controller has AMT, do not set DRV_LOAD until the interface
Auke Kokbc7f75f2007-09-17 12:30:59 -07006372 * is up. For all other cases, let the f/w know that the h/w is now
Bruce Allanad680762008-03-28 09:15:03 -07006373 * under the control of the driver.
6374 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07006375 if (!(adapter->flags & FLAG_HAS_AMT))
Bruce Allan31dbe5b2011-01-06 14:29:52 +00006376 e1000e_get_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006377
Bruce Allanf2315bf2011-12-16 00:46:59 +00006378 strlcpy(netdev->name, "eth%d", sizeof(netdev->name));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006379 err = register_netdev(netdev);
6380 if (err)
6381 goto err_register;
6382
Jesse Brandeburg9c563d22009-04-17 20:44:34 +00006383 /* carrier off reporting is important to ethtool even BEFORE open */
6384 netif_carrier_off(netdev);
6385
Auke Kokbc7f75f2007-09-17 12:30:59 -07006386 e1000_print_device_info(adapter);
6387
Alan Sternf3ec4f82010-06-08 15:23:51 -04006388 if (pci_dev_run_wake(pdev))
6389 pm_runtime_put_noidle(&pdev->dev);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006390
Auke Kokbc7f75f2007-09-17 12:30:59 -07006391 return 0;
6392
6393err_register:
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07006394 if (!(adapter->flags & FLAG_HAS_AMT))
Bruce Allan31dbe5b2011-01-06 14:29:52 +00006395 e1000e_release_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006396err_eeprom:
Bruce Allan470a5422012-05-26 06:08:48 +00006397 if (hw->phy.ops.check_reset_block && !hw->phy.ops.check_reset_block(hw))
Auke Kokbc7f75f2007-09-17 12:30:59 -07006398 e1000_phy_hw_reset(&adapter->hw);
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07006399err_hw_init:
Auke Kokbc7f75f2007-09-17 12:30:59 -07006400 kfree(adapter->tx_ring);
6401 kfree(adapter->rx_ring);
6402err_sw_init:
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07006403 if (adapter->hw.flash_address)
6404 iounmap(adapter->hw.flash_address);
Jeff Kirshere82f54b2008-11-14 06:45:07 +00006405 e1000e_reset_interrupt_capability(adapter);
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07006406err_flashmap:
Auke Kokbc7f75f2007-09-17 12:30:59 -07006407 iounmap(adapter->hw.hw_addr);
6408err_ioremap:
6409 free_netdev(netdev);
6410err_alloc_etherdev:
Bruce Allanf0f422e2008-08-04 17:21:53 -07006411 pci_release_selected_regions(pdev,
6412 pci_select_bars(pdev, IORESOURCE_MEM));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006413err_pci_reg:
6414err_dma:
6415 pci_disable_device(pdev);
6416 return err;
6417}
6418
6419/**
6420 * e1000_remove - Device Removal Routine
6421 * @pdev: PCI device information struct
6422 *
6423 * e1000_remove is called by the PCI subsystem to alert the driver
6424 * that it should release a PCI device. The could be caused by a
6425 * Hot-Plug event, or because the driver is going to be removed from
6426 * memory.
6427 **/
6428static void __devexit e1000_remove(struct pci_dev *pdev)
6429{
6430 struct net_device *netdev = pci_get_drvdata(pdev);
6431 struct e1000_adapter *adapter = netdev_priv(netdev);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006432 bool down = test_bit(__E1000_DOWN, &adapter->state);
6433
Bruce Allanad680762008-03-28 09:15:03 -07006434 /*
Tejun Heo23f333a2010-12-12 16:45:14 +01006435 * The timers may be rescheduled, so explicitly disable them
6436 * from being rescheduled.
Bruce Allanad680762008-03-28 09:15:03 -07006437 */
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006438 if (!down)
6439 set_bit(__E1000_DOWN, &adapter->state);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006440 del_timer_sync(&adapter->watchdog_timer);
6441 del_timer_sync(&adapter->phy_info_timer);
6442
Bruce Allan41cec6f2009-11-20 23:28:56 +00006443 cancel_work_sync(&adapter->reset_task);
6444 cancel_work_sync(&adapter->watchdog_task);
6445 cancel_work_sync(&adapter->downshift_task);
6446 cancel_work_sync(&adapter->update_phy_task);
6447 cancel_work_sync(&adapter->print_hang_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006448
Bruce Allan17f208d2009-12-01 15:47:22 +00006449 if (!(netdev->flags & IFF_UP))
6450 e1000_power_down_phy(adapter);
6451
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006452 /* Don't lie to e1000_close() down the road. */
6453 if (!down)
6454 clear_bit(__E1000_DOWN, &adapter->state);
Bruce Allan17f208d2009-12-01 15:47:22 +00006455 unregister_netdev(netdev);
6456
Alan Sternf3ec4f82010-06-08 15:23:51 -04006457 if (pci_dev_run_wake(pdev))
6458 pm_runtime_get_noresume(&pdev->dev);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006459
Bruce Allanad680762008-03-28 09:15:03 -07006460 /*
6461 * Release control of h/w to f/w. If f/w is AMT enabled, this
6462 * would have already happened in close and is redundant.
6463 */
Bruce Allan31dbe5b2011-01-06 14:29:52 +00006464 e1000e_release_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006465
Bruce Allan4662e822008-08-26 18:37:06 -07006466 e1000e_reset_interrupt_capability(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006467 kfree(adapter->tx_ring);
6468 kfree(adapter->rx_ring);
6469
6470 iounmap(adapter->hw.hw_addr);
6471 if (adapter->hw.flash_address)
6472 iounmap(adapter->hw.flash_address);
Bruce Allanf0f422e2008-08-04 17:21:53 -07006473 pci_release_selected_regions(pdev,
6474 pci_select_bars(pdev, IORESOURCE_MEM));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006475
6476 free_netdev(netdev);
6477
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00006478 /* AER disable */
Frans Pop19d5afd2009-10-02 10:04:12 -07006479 pci_disable_pcie_error_reporting(pdev);
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00006480
Auke Kokbc7f75f2007-09-17 12:30:59 -07006481 pci_disable_device(pdev);
6482}
6483
6484/* PCI Error Recovery (ERS) */
Stephen Hemminger3646f0e2012-09-07 09:33:15 -07006485static const struct pci_error_handlers e1000_err_handler = {
Auke Kokbc7f75f2007-09-17 12:30:59 -07006486 .error_detected = e1000_io_error_detected,
6487 .slot_reset = e1000_io_slot_reset,
6488 .resume = e1000_io_resume,
6489};
6490
Alexey Dobriyana3aa1882010-01-07 11:58:11 +00006491static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = {
Auke Kokbc7f75f2007-09-17 12:30:59 -07006492 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 },
6493 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 },
6494 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 },
6495 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 },
6496 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 },
6497 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 },
Auke Kok040babf2007-10-31 15:22:05 -07006498 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 },
6499 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 },
6500 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 },
Bruce Allanad680762008-03-28 09:15:03 -07006501
Auke Kokbc7f75f2007-09-17 12:30:59 -07006502 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 },
6503 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 },
6504 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 },
6505 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 },
Bruce Allanad680762008-03-28 09:15:03 -07006506
Auke Kokbc7f75f2007-09-17 12:30:59 -07006507 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 },
6508 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 },
6509 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 },
Bruce Allanad680762008-03-28 09:15:03 -07006510
Bruce Allan4662e822008-08-26 18:37:06 -07006511 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 },
Bruce Allanbef28b12009-03-24 23:28:02 -07006512 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 },
Alexander Duyck8c81c9c2009-03-19 01:12:27 +00006513 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 },
Bruce Allan4662e822008-08-26 18:37:06 -07006514
Auke Kokbc7f75f2007-09-17 12:30:59 -07006515 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT),
6516 board_80003es2lan },
6517 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT),
6518 board_80003es2lan },
6519 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT),
6520 board_80003es2lan },
6521 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT),
6522 board_80003es2lan },
Bruce Allanad680762008-03-28 09:15:03 -07006523
Auke Kokbc7f75f2007-09-17 12:30:59 -07006524 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan },
6525 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan },
6526 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan },
6527 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan },
6528 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan },
6529 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan },
6530 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan },
Bruce Allan9e135a22009-12-01 15:50:31 +00006531 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan },
Bruce Allanad680762008-03-28 09:15:03 -07006532
Auke Kokbc7f75f2007-09-17 12:30:59 -07006533 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan },
6534 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan },
6535 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan },
6536 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan },
6537 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan },
Bruce Allan2f15f9d2008-08-26 18:36:36 -07006538 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan },
Bruce Allan97ac8ca2008-04-29 09:16:05 -07006539 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan },
6540 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan },
6541 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan },
6542
6543 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan },
6544 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan },
6545 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan },
Auke Kokbc7f75f2007-09-17 12:30:59 -07006546
Bruce Allanf4187b52008-08-26 18:36:50 -07006547 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan },
6548 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan },
Bruce Allan10df0b92010-05-10 15:02:52 +00006549 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan },
Bruce Allanf4187b52008-08-26 18:36:50 -07006550
Bruce Allana4f58f52009-06-02 11:29:18 +00006551 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan },
6552 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan },
6553 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan },
6554 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan },
6555
Bruce Alland3738bb2010-06-16 13:27:28 +00006556 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan },
6557 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan },
6558
Bruce Allan2fbe4522012-04-19 03:21:47 +00006559 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_LM), board_pch_lpt },
6560 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_V), board_pch_lpt },
Bruce Allan16e310a2012-10-09 01:11:26 +00006561 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPTLP_I218_LM), board_pch_lpt },
6562 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPTLP_I218_V), board_pch_lpt },
Bruce Allan2fbe4522012-04-19 03:21:47 +00006563
Bruce Allanf36bb6c2012-01-31 06:38:04 +00006564 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */
Auke Kokbc7f75f2007-09-17 12:30:59 -07006565};
6566MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
6567
Rafael J. Wysockiaa338602011-02-11 00:06:54 +01006568#ifdef CONFIG_PM
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006569static const struct dev_pm_ops e1000_pm_ops = {
Rafael J. Wysockia0340162010-03-17 23:12:24 -07006570 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume)
6571 SET_RUNTIME_PM_OPS(e1000_runtime_suspend,
6572 e1000_runtime_resume, e1000_idle)
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006573};
David S. Millere50208a2010-03-16 23:36:24 -07006574#endif
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006575
Auke Kokbc7f75f2007-09-17 12:30:59 -07006576/* PCI Device API Driver */
6577static struct pci_driver e1000_driver = {
6578 .name = e1000e_driver_name,
6579 .id_table = e1000_pci_tbl,
6580 .probe = e1000_probe,
6581 .remove = __devexit_p(e1000_remove),
Rafael J. Wysockiaa338602011-02-11 00:06:54 +01006582#ifdef CONFIG_PM
Bruce Allanf36bb6c2012-01-31 06:38:04 +00006583 .driver = {
6584 .pm = &e1000_pm_ops,
6585 },
Auke Kokbc7f75f2007-09-17 12:30:59 -07006586#endif
6587 .shutdown = e1000_shutdown,
6588 .err_handler = &e1000_err_handler
6589};
6590
6591/**
6592 * e1000_init_module - Driver Registration Routine
6593 *
6594 * e1000_init_module is the first routine called when the driver is
6595 * loaded. All it does is register with the PCI subsystem.
6596 **/
6597static int __init e1000_init_module(void)
6598{
6599 int ret;
Bruce Allan8544b9f2010-03-24 12:55:30 +00006600 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
6601 e1000e_driver_version);
Bruce Allanf5e261e2012-01-01 16:00:03 +00006602 pr_info("Copyright(c) 1999 - 2012 Intel Corporation.\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07006603 ret = pci_register_driver(&e1000_driver);
Bruce Allan53ec5492009-11-20 23:27:40 +00006604
Auke Kokbc7f75f2007-09-17 12:30:59 -07006605 return ret;
6606}
6607module_init(e1000_init_module);
6608
6609/**
6610 * e1000_exit_module - Driver Exit Cleanup Routine
6611 *
6612 * e1000_exit_module is called just before the driver is removed
6613 * from memory.
6614 **/
6615static void __exit e1000_exit_module(void)
6616{
6617 pci_unregister_driver(&e1000_driver);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006618}
6619module_exit(e1000_exit_module);
6620
6621
6622MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
6623MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
6624MODULE_LICENSE("GPL");
6625MODULE_VERSION(DRV_VERSION);
6626
Bruce Allan06c24b92012-02-23 03:13:13 +00006627/* netdev.c */