blob: 95b245310f1761fa4f9b06de319cea48fdc28c92 [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 Allana61d3d12012-05-04 08:52:03 +000059#define DRV_VERSION "2.0.0" 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
Taku Izumi84f4ee92010-04-27 14:39:08 +0000181/*
Bruce Allanaf667a22010-12-31 06:10:01 +0000182 * e1000e_dump - Print registers, Tx-ring and Rx-ring
Taku Izumi84f4ee92010-04-27 14:39:08 +0000183 */
184static void e1000e_dump(struct e1000_adapter *adapter)
185{
186 struct net_device *netdev = adapter->netdev;
187 struct e1000_hw *hw = &adapter->hw;
188 struct e1000_reg_info *reginfo;
189 struct e1000_ring *tx_ring = adapter->tx_ring;
190 struct e1000_tx_desc *tx_desc;
Bruce Allanaf667a22010-12-31 06:10:01 +0000191 struct my_u0 {
Bruce Allane885d762012-01-31 06:37:32 +0000192 __le64 a;
193 __le64 b;
Bruce Allanaf667a22010-12-31 06:10:01 +0000194 } *u0;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000195 struct e1000_buffer *buffer_info;
196 struct e1000_ring *rx_ring = adapter->rx_ring;
197 union e1000_rx_desc_packet_split *rx_desc_ps;
Bruce Allan5f450212011-07-22 06:21:46 +0000198 union e1000_rx_desc_extended *rx_desc;
Bruce Allanaf667a22010-12-31 06:10:01 +0000199 struct my_u1 {
Bruce Allane885d762012-01-31 06:37:32 +0000200 __le64 a;
201 __le64 b;
202 __le64 c;
203 __le64 d;
Bruce Allanaf667a22010-12-31 06:10:01 +0000204 } *u1;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000205 u32 staterr;
206 int i = 0;
207
208 if (!netif_msg_hw(adapter))
209 return;
210
211 /* Print netdevice Info */
212 if (netdev) {
213 dev_info(&adapter->pdev->dev, "Net device Info\n");
Jeff Kirsheref456f82011-11-03 11:40:28 +0000214 pr_info("Device Name state trans_start last_rx\n");
215 pr_info("%-15s %016lX %016lX %016lX\n",
216 netdev->name, netdev->state, netdev->trans_start,
217 netdev->last_rx);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000218 }
219
220 /* Print Registers */
221 dev_info(&adapter->pdev->dev, "Register Dump\n");
Jeff Kirsheref456f82011-11-03 11:40:28 +0000222 pr_info(" Register Name Value\n");
Taku Izumi84f4ee92010-04-27 14:39:08 +0000223 for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl;
224 reginfo->name; reginfo++) {
225 e1000_regdump(hw, reginfo);
226 }
227
Bruce Allanaf667a22010-12-31 06:10:01 +0000228 /* Print Tx Ring Summary */
Taku Izumi84f4ee92010-04-27 14:39:08 +0000229 if (!netdev || !netif_running(netdev))
Bruce Allanfe1e9802012-01-31 06:37:54 +0000230 return;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000231
Bruce Allanaf667a22010-12-31 06:10:01 +0000232 dev_info(&adapter->pdev->dev, "Tx Ring Summary\n");
Jeff Kirsheref456f82011-11-03 11:40:28 +0000233 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
Taku Izumi84f4ee92010-04-27 14:39:08 +0000234 buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean];
Jeff Kirsheref456f82011-11-03 11:40:28 +0000235 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n",
236 0, tx_ring->next_to_use, tx_ring->next_to_clean,
237 (unsigned long long)buffer_info->dma,
238 buffer_info->length,
239 buffer_info->next_to_watch,
240 (unsigned long long)buffer_info->time_stamp);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000241
Bruce Allanaf667a22010-12-31 06:10:01 +0000242 /* Print Tx Ring */
Taku Izumi84f4ee92010-04-27 14:39:08 +0000243 if (!netif_msg_tx_done(adapter))
244 goto rx_ring_summary;
245
Bruce Allanaf667a22010-12-31 06:10:01 +0000246 dev_info(&adapter->pdev->dev, "Tx Ring Dump\n");
Taku Izumi84f4ee92010-04-27 14:39:08 +0000247
248 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
249 *
250 * Legacy Transmit Descriptor
251 * +--------------------------------------------------------------+
252 * 0 | Buffer Address [63:0] (Reserved on Write Back) |
253 * +--------------------------------------------------------------+
254 * 8 | Special | CSS | Status | CMD | CSO | Length |
255 * +--------------------------------------------------------------+
256 * 63 48 47 36 35 32 31 24 23 16 15 0
257 *
258 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
259 * 63 48 47 40 39 32 31 16 15 8 7 0
260 * +----------------------------------------------------------------+
261 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
262 * +----------------------------------------------------------------+
263 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
264 * +----------------------------------------------------------------+
265 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
266 *
267 * Extended Data Descriptor (DTYP=0x1)
268 * +----------------------------------------------------------------+
269 * 0 | Buffer Address [63:0] |
270 * +----------------------------------------------------------------+
271 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
272 * +----------------------------------------------------------------+
273 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
274 */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000275 pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n");
276 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n");
277 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 +0000278 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
Jeff Kirsheref456f82011-11-03 11:40:28 +0000279 const char *next_desc;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000280 tx_desc = E1000_TX_DESC(*tx_ring, i);
281 buffer_info = &tx_ring->buffer_info[i];
282 u0 = (struct my_u0 *)tx_desc;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000283 if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean)
Jeff Kirsheref456f82011-11-03 11:40:28 +0000284 next_desc = " NTC/U";
Taku Izumi84f4ee92010-04-27 14:39:08 +0000285 else if (i == tx_ring->next_to_use)
Jeff Kirsheref456f82011-11-03 11:40:28 +0000286 next_desc = " NTU";
Taku Izumi84f4ee92010-04-27 14:39:08 +0000287 else if (i == tx_ring->next_to_clean)
Jeff Kirsheref456f82011-11-03 11:40:28 +0000288 next_desc = " NTC";
Taku Izumi84f4ee92010-04-27 14:39:08 +0000289 else
Jeff Kirsheref456f82011-11-03 11:40:28 +0000290 next_desc = "";
291 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n",
292 (!(le64_to_cpu(u0->b) & (1 << 29)) ? 'l' :
293 ((le64_to_cpu(u0->b) & (1 << 20)) ? 'd' : 'c')),
294 i,
295 (unsigned long long)le64_to_cpu(u0->a),
296 (unsigned long long)le64_to_cpu(u0->b),
297 (unsigned long long)buffer_info->dma,
298 buffer_info->length, buffer_info->next_to_watch,
299 (unsigned long long)buffer_info->time_stamp,
300 buffer_info->skb, next_desc);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000301
302 if (netif_msg_pktdata(adapter) && buffer_info->dma != 0)
303 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS,
Bruce Allanaf667a22010-12-31 06:10:01 +0000304 16, 1, phys_to_virt(buffer_info->dma),
305 buffer_info->length, true);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000306 }
307
Bruce Allanaf667a22010-12-31 06:10:01 +0000308 /* Print Rx Ring Summary */
Taku Izumi84f4ee92010-04-27 14:39:08 +0000309rx_ring_summary:
Bruce Allanaf667a22010-12-31 06:10:01 +0000310 dev_info(&adapter->pdev->dev, "Rx Ring Summary\n");
Jeff Kirsheref456f82011-11-03 11:40:28 +0000311 pr_info("Queue [NTU] [NTC]\n");
312 pr_info(" %5d %5X %5X\n",
313 0, rx_ring->next_to_use, rx_ring->next_to_clean);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000314
Bruce Allanaf667a22010-12-31 06:10:01 +0000315 /* Print Rx Ring */
Taku Izumi84f4ee92010-04-27 14:39:08 +0000316 if (!netif_msg_rx_status(adapter))
Bruce Allanfe1e9802012-01-31 06:37:54 +0000317 return;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000318
Bruce Allanaf667a22010-12-31 06:10:01 +0000319 dev_info(&adapter->pdev->dev, "Rx Ring Dump\n");
Taku Izumi84f4ee92010-04-27 14:39:08 +0000320 switch (adapter->rx_ps_pages) {
321 case 1:
322 case 2:
323 case 3:
324 /* [Extended] Packet Split Receive Descriptor Format
325 *
326 * +-----------------------------------------------------+
327 * 0 | Buffer Address 0 [63:0] |
328 * +-----------------------------------------------------+
329 * 8 | Buffer Address 1 [63:0] |
330 * +-----------------------------------------------------+
331 * 16 | Buffer Address 2 [63:0] |
332 * +-----------------------------------------------------+
333 * 24 | Buffer Address 3 [63:0] |
334 * +-----------------------------------------------------+
335 */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000336 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 +0000337 /* [Extended] Receive Descriptor (Write-Back) Format
338 *
339 * 63 48 47 32 31 13 12 8 7 4 3 0
340 * +------------------------------------------------------+
341 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
342 * | Checksum | Ident | | Queue | | Type |
343 * +------------------------------------------------------+
344 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
345 * +------------------------------------------------------+
346 * 63 48 47 32 31 20 19 0
347 */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000348 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 +0000349 for (i = 0; i < rx_ring->count; i++) {
Jeff Kirsheref456f82011-11-03 11:40:28 +0000350 const char *next_desc;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000351 buffer_info = &rx_ring->buffer_info[i];
352 rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i);
353 u1 = (struct my_u1 *)rx_desc_ps;
354 staterr =
Bruce Allanaf667a22010-12-31 06:10:01 +0000355 le32_to_cpu(rx_desc_ps->wb.middle.status_error);
Jeff Kirsheref456f82011-11-03 11:40:28 +0000356
357 if (i == rx_ring->next_to_use)
358 next_desc = " NTU";
359 else if (i == rx_ring->next_to_clean)
360 next_desc = " NTC";
361 else
362 next_desc = "";
363
Taku Izumi84f4ee92010-04-27 14:39:08 +0000364 if (staterr & E1000_RXD_STAT_DD) {
365 /* Descriptor Done */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000366 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n",
367 "RWB", i,
368 (unsigned long long)le64_to_cpu(u1->a),
369 (unsigned long long)le64_to_cpu(u1->b),
370 (unsigned long long)le64_to_cpu(u1->c),
371 (unsigned long long)le64_to_cpu(u1->d),
372 buffer_info->skb, next_desc);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000373 } else {
Jeff Kirsheref456f82011-11-03 11:40:28 +0000374 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n",
375 "R ", i,
376 (unsigned long long)le64_to_cpu(u1->a),
377 (unsigned long long)le64_to_cpu(u1->b),
378 (unsigned long long)le64_to_cpu(u1->c),
379 (unsigned long long)le64_to_cpu(u1->d),
380 (unsigned long long)buffer_info->dma,
381 buffer_info->skb, next_desc);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000382
383 if (netif_msg_pktdata(adapter))
384 print_hex_dump(KERN_INFO, "",
385 DUMP_PREFIX_ADDRESS, 16, 1,
386 phys_to_virt(buffer_info->dma),
387 adapter->rx_ps_bsize0, true);
388 }
Taku Izumi84f4ee92010-04-27 14:39:08 +0000389 }
390 break;
391 default:
392 case 0:
Bruce Allan5f450212011-07-22 06:21:46 +0000393 /* Extended Receive Descriptor (Read) Format
Taku Izumi84f4ee92010-04-27 14:39:08 +0000394 *
Bruce Allan5f450212011-07-22 06:21:46 +0000395 * +-----------------------------------------------------+
396 * 0 | Buffer Address [63:0] |
397 * +-----------------------------------------------------+
398 * 8 | Reserved |
399 * +-----------------------------------------------------+
Taku Izumi84f4ee92010-04-27 14:39:08 +0000400 */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000401 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 +0000402 /* Extended Receive Descriptor (Write-Back) Format
403 *
404 * 63 48 47 32 31 24 23 4 3 0
405 * +------------------------------------------------------+
406 * | RSS Hash | | | |
407 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS |
408 * | Packet | IP | | | Type |
409 * | Checksum | Ident | | | |
410 * +------------------------------------------------------+
411 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
412 * +------------------------------------------------------+
413 * 63 48 47 32 31 20 19 0
414 */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000415 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 +0000416
417 for (i = 0; i < rx_ring->count; i++) {
Jeff Kirsheref456f82011-11-03 11:40:28 +0000418 const char *next_desc;
419
Taku Izumi84f4ee92010-04-27 14:39:08 +0000420 buffer_info = &rx_ring->buffer_info[i];
Bruce Allan5f450212011-07-22 06:21:46 +0000421 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
422 u1 = (struct my_u1 *)rx_desc;
423 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Jeff Kirsheref456f82011-11-03 11:40:28 +0000424
425 if (i == rx_ring->next_to_use)
426 next_desc = " NTU";
427 else if (i == rx_ring->next_to_clean)
428 next_desc = " NTC";
429 else
430 next_desc = "";
431
Bruce Allan5f450212011-07-22 06:21:46 +0000432 if (staterr & E1000_RXD_STAT_DD) {
433 /* Descriptor Done */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000434 pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n",
435 "RWB", i,
436 (unsigned long long)le64_to_cpu(u1->a),
437 (unsigned long long)le64_to_cpu(u1->b),
438 buffer_info->skb, next_desc);
Bruce Allan5f450212011-07-22 06:21:46 +0000439 } else {
Jeff Kirsheref456f82011-11-03 11:40:28 +0000440 pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n",
441 "R ", i,
442 (unsigned long long)le64_to_cpu(u1->a),
443 (unsigned long long)le64_to_cpu(u1->b),
444 (unsigned long long)buffer_info->dma,
445 buffer_info->skb, next_desc);
Bruce Allan5f450212011-07-22 06:21:46 +0000446
447 if (netif_msg_pktdata(adapter))
448 print_hex_dump(KERN_INFO, "",
449 DUMP_PREFIX_ADDRESS, 16,
450 1,
451 phys_to_virt
452 (buffer_info->dma),
453 adapter->rx_buffer_len,
454 true);
455 }
Taku Izumi84f4ee92010-04-27 14:39:08 +0000456 }
457 }
Taku Izumi84f4ee92010-04-27 14:39:08 +0000458}
459
Auke Kokbc7f75f2007-09-17 12:30:59 -0700460/**
461 * e1000_desc_unused - calculate if we have unused descriptors
462 **/
463static int e1000_desc_unused(struct e1000_ring *ring)
464{
465 if (ring->next_to_clean > ring->next_to_use)
466 return ring->next_to_clean - ring->next_to_use - 1;
467
468 return ring->count + ring->next_to_clean - ring->next_to_use - 1;
469}
470
471/**
Bruce Allanad680762008-03-28 09:15:03 -0700472 * e1000_receive_skb - helper function to handle Rx indications
Auke Kokbc7f75f2007-09-17 12:30:59 -0700473 * @adapter: board private structure
474 * @status: descriptor status field as written by hardware
475 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
476 * @skb: pointer to sk_buff to be indicated to stack
477 **/
478static void e1000_receive_skb(struct e1000_adapter *adapter,
Bruce Allanaf667a22010-12-31 06:10:01 +0000479 struct net_device *netdev, struct sk_buff *skb,
Al Viroa39fe742007-12-11 19:50:34 +0000480 u8 status, __le16 vlan)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700481{
Jeff Kirsher86d70e52011-03-25 16:01:01 +0000482 u16 tag = le16_to_cpu(vlan);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700483 skb->protocol = eth_type_trans(skb, netdev);
484
Jeff Kirsher86d70e52011-03-25 16:01:01 +0000485 if (status & E1000_RXD_STAT_VP)
486 __vlan_hwaccel_put_tag(skb, tag);
487
488 napi_gro_receive(&adapter->napi, skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700489}
490
491/**
Bruce Allanaf667a22010-12-31 06:10:01 +0000492 * e1000_rx_checksum - Receive Checksum Offload
Bruce Allanafd12932012-01-05 00:34:05 +0000493 * @adapter: board private structure
494 * @status_err: receive descriptor status and error fields
495 * @csum: receive descriptor csum field
496 * @sk_buff: socket buffer with received data
Auke Kokbc7f75f2007-09-17 12:30:59 -0700497 **/
498static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
Bruce Allan2e1706f2012-06-30 20:02:42 +0000499 struct sk_buff *skb)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700500{
501 u16 status = (u16)status_err;
502 u8 errors = (u8)(status_err >> 24);
Eric Dumazetbc8acf22010-09-02 13:07:41 -0700503
504 skb_checksum_none_assert(skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700505
Bruce Allanafd12932012-01-05 00:34:05 +0000506 /* Rx checksum disabled */
507 if (!(adapter->netdev->features & NETIF_F_RXCSUM))
508 return;
509
Auke Kokbc7f75f2007-09-17 12:30:59 -0700510 /* Ignore Checksum bit is set */
511 if (status & E1000_RXD_STAT_IXSM)
512 return;
Bruce Allanafd12932012-01-05 00:34:05 +0000513
Bruce Allan2e1706f2012-06-30 20:02:42 +0000514 /* TCP/UDP checksum error bit or IP checksum error bit is set */
515 if (errors & (E1000_RXD_ERR_TCPE | E1000_RXD_ERR_IPE)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700516 /* let the stack verify checksum errors */
517 adapter->hw_csum_err++;
518 return;
519 }
520
521 /* TCP/UDP Checksum has not been calculated */
522 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
523 return;
524
525 /* It must be a TCP or UDP packet with a valid checksum */
Bruce Allan2e1706f2012-06-30 20:02:42 +0000526 skb->ip_summed = CHECKSUM_UNNECESSARY;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700527 adapter->hw_csum_good++;
528}
529
Bruce Allan55aa6982011-12-16 00:45:45 +0000530static void e1000e_update_rdt_wa(struct e1000_ring *rx_ring, unsigned int i)
David S. Miller823dcd22011-08-20 10:39:12 -0700531{
Bruce Allan55aa6982011-12-16 00:45:45 +0000532 struct e1000_adapter *adapter = rx_ring->adapter;
David S. Miller823dcd22011-08-20 10:39:12 -0700533 struct e1000_hw *hw = &adapter->hw;
Bruce Allanbdc125f2012-03-20 03:47:52 +0000534 s32 ret_val = __ew32_prepare(hw);
David S. Miller823dcd22011-08-20 10:39:12 -0700535
Bruce Allanbdc125f2012-03-20 03:47:52 +0000536 writel(i, rx_ring->tail);
537
538 if (unlikely(!ret_val && (i != readl(rx_ring->tail)))) {
David S. Miller823dcd22011-08-20 10:39:12 -0700539 u32 rctl = er32(RCTL);
540 ew32(RCTL, rctl & ~E1000_RCTL_EN);
541 e_err("ME firmware caused invalid RDT - resetting\n");
542 schedule_work(&adapter->reset_task);
543 }
544}
545
Bruce Allan55aa6982011-12-16 00:45:45 +0000546static void e1000e_update_tdt_wa(struct e1000_ring *tx_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 = tx_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, tx_ring->tail);
553
554 if (unlikely(!ret_val && (i != readl(tx_ring->tail)))) {
David S. Miller823dcd22011-08-20 10:39:12 -0700555 u32 tctl = er32(TCTL);
556 ew32(TCTL, tctl & ~E1000_TCTL_EN);
557 e_err("ME firmware caused invalid TDT - resetting\n");
558 schedule_work(&adapter->reset_task);
559 }
560}
561
562/**
Bruce Allan5f450212011-07-22 06:21:46 +0000563 * e1000_alloc_rx_buffers - Replace used receive buffers
Bruce Allan55aa6982011-12-16 00:45:45 +0000564 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -0700565 **/
Bruce Allan55aa6982011-12-16 00:45:45 +0000566static void e1000_alloc_rx_buffers(struct e1000_ring *rx_ring,
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000567 int cleaned_count, gfp_t gfp)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700568{
Bruce Allan55aa6982011-12-16 00:45:45 +0000569 struct e1000_adapter *adapter = rx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700570 struct net_device *netdev = adapter->netdev;
571 struct pci_dev *pdev = adapter->pdev;
Bruce Allan5f450212011-07-22 06:21:46 +0000572 union e1000_rx_desc_extended *rx_desc;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700573 struct e1000_buffer *buffer_info;
574 struct sk_buff *skb;
575 unsigned int i;
Eric Dumazet89d71a62009-10-13 05:34:20 +0000576 unsigned int bufsz = adapter->rx_buffer_len;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700577
578 i = rx_ring->next_to_use;
579 buffer_info = &rx_ring->buffer_info[i];
580
581 while (cleaned_count--) {
582 skb = buffer_info->skb;
583 if (skb) {
584 skb_trim(skb, 0);
585 goto map_skb;
586 }
587
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000588 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700589 if (!skb) {
590 /* Better luck next round */
591 adapter->alloc_rx_buff_failed++;
592 break;
593 }
594
Auke Kokbc7f75f2007-09-17 12:30:59 -0700595 buffer_info->skb = skb;
596map_skb:
Nick Nunley0be3f552010-04-27 13:09:05 +0000597 buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
Auke Kokbc7f75f2007-09-17 12:30:59 -0700598 adapter->rx_buffer_len,
Nick Nunley0be3f552010-04-27 13:09:05 +0000599 DMA_FROM_DEVICE);
600 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
Bruce Allanaf667a22010-12-31 06:10:01 +0000601 dev_err(&pdev->dev, "Rx DMA map failed\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -0700602 adapter->rx_dma_failed++;
603 break;
604 }
605
Bruce Allan5f450212011-07-22 06:21:46 +0000606 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
607 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700608
Tom Herbert50849d72010-05-05 14:02:49 +0000609 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
610 /*
611 * Force memory writes to complete before letting h/w
612 * know there are new descriptors to fetch. (Only
613 * applicable for weak-ordered memory model archs,
614 * such as IA-64).
615 */
616 wmb();
David S. Miller823dcd22011-08-20 10:39:12 -0700617 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
Bruce Allan55aa6982011-12-16 00:45:45 +0000618 e1000e_update_rdt_wa(rx_ring, i);
David S. Miller823dcd22011-08-20 10:39:12 -0700619 else
Bruce Allanc5083cf2011-12-16 00:45:40 +0000620 writel(i, rx_ring->tail);
Tom Herbert50849d72010-05-05 14:02:49 +0000621 }
Auke Kokbc7f75f2007-09-17 12:30:59 -0700622 i++;
623 if (i == rx_ring->count)
624 i = 0;
625 buffer_info = &rx_ring->buffer_info[i];
626 }
627
Tom Herbert50849d72010-05-05 14:02:49 +0000628 rx_ring->next_to_use = i;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700629}
630
631/**
632 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
Bruce Allan55aa6982011-12-16 00:45:45 +0000633 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -0700634 **/
Bruce Allan55aa6982011-12-16 00:45:45 +0000635static void e1000_alloc_rx_buffers_ps(struct e1000_ring *rx_ring,
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000636 int cleaned_count, gfp_t gfp)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700637{
Bruce Allan55aa6982011-12-16 00:45:45 +0000638 struct e1000_adapter *adapter = rx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700639 struct net_device *netdev = adapter->netdev;
640 struct pci_dev *pdev = adapter->pdev;
641 union e1000_rx_desc_packet_split *rx_desc;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700642 struct e1000_buffer *buffer_info;
643 struct e1000_ps_page *ps_page;
644 struct sk_buff *skb;
645 unsigned int i, j;
646
647 i = rx_ring->next_to_use;
648 buffer_info = &rx_ring->buffer_info[i];
649
650 while (cleaned_count--) {
651 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
652
653 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
Auke Kok47f44e42007-10-25 13:57:44 -0700654 ps_page = &buffer_info->ps_pages[j];
655 if (j >= adapter->rx_ps_pages) {
656 /* all unused desc entries get hw null ptr */
Bruce Allanaf667a22010-12-31 06:10:01 +0000657 rx_desc->read.buffer_addr[j + 1] =
658 ~cpu_to_le64(0);
Auke Kok47f44e42007-10-25 13:57:44 -0700659 continue;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700660 }
Auke Kok47f44e42007-10-25 13:57:44 -0700661 if (!ps_page->page) {
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000662 ps_page->page = alloc_page(gfp);
Auke Kok47f44e42007-10-25 13:57:44 -0700663 if (!ps_page->page) {
664 adapter->alloc_rx_buff_failed++;
665 goto no_buffers;
666 }
Nick Nunley0be3f552010-04-27 13:09:05 +0000667 ps_page->dma = dma_map_page(&pdev->dev,
668 ps_page->page,
669 0, PAGE_SIZE,
670 DMA_FROM_DEVICE);
671 if (dma_mapping_error(&pdev->dev,
672 ps_page->dma)) {
Auke Kok47f44e42007-10-25 13:57:44 -0700673 dev_err(&adapter->pdev->dev,
Bruce Allanaf667a22010-12-31 06:10:01 +0000674 "Rx DMA page map failed\n");
Auke Kok47f44e42007-10-25 13:57:44 -0700675 adapter->rx_dma_failed++;
676 goto no_buffers;
677 }
678 }
679 /*
680 * Refresh the desc even if buffer_addrs
681 * didn't change because each write-back
682 * erases this info.
683 */
Bruce Allanaf667a22010-12-31 06:10:01 +0000684 rx_desc->read.buffer_addr[j + 1] =
685 cpu_to_le64(ps_page->dma);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700686 }
687
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000688 skb = __netdev_alloc_skb_ip_align(netdev,
689 adapter->rx_ps_bsize0,
690 gfp);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700691
692 if (!skb) {
693 adapter->alloc_rx_buff_failed++;
694 break;
695 }
696
Auke Kokbc7f75f2007-09-17 12:30:59 -0700697 buffer_info->skb = skb;
Nick Nunley0be3f552010-04-27 13:09:05 +0000698 buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
Auke Kokbc7f75f2007-09-17 12:30:59 -0700699 adapter->rx_ps_bsize0,
Nick Nunley0be3f552010-04-27 13:09:05 +0000700 DMA_FROM_DEVICE);
701 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
Bruce Allanaf667a22010-12-31 06:10:01 +0000702 dev_err(&pdev->dev, "Rx DMA map failed\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -0700703 adapter->rx_dma_failed++;
704 /* cleanup skb */
705 dev_kfree_skb_any(skb);
706 buffer_info->skb = NULL;
707 break;
708 }
709
710 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
711
Tom Herbert50849d72010-05-05 14:02:49 +0000712 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
713 /*
714 * Force memory writes to complete before letting h/w
715 * know there are new descriptors to fetch. (Only
716 * applicable for weak-ordered memory model archs,
717 * such as IA-64).
718 */
719 wmb();
David S. Miller823dcd22011-08-20 10:39:12 -0700720 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
Bruce Allan55aa6982011-12-16 00:45:45 +0000721 e1000e_update_rdt_wa(rx_ring, i << 1);
David S. Miller823dcd22011-08-20 10:39:12 -0700722 else
Bruce Allanc5083cf2011-12-16 00:45:40 +0000723 writel(i << 1, rx_ring->tail);
Tom Herbert50849d72010-05-05 14:02:49 +0000724 }
725
Auke Kokbc7f75f2007-09-17 12:30:59 -0700726 i++;
727 if (i == rx_ring->count)
728 i = 0;
729 buffer_info = &rx_ring->buffer_info[i];
730 }
731
732no_buffers:
Tom Herbert50849d72010-05-05 14:02:49 +0000733 rx_ring->next_to_use = i;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700734}
735
736/**
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700737 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
Bruce Allan55aa6982011-12-16 00:45:45 +0000738 * @rx_ring: Rx descriptor ring
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700739 * @cleaned_count: number of buffers to allocate this pass
740 **/
741
Bruce Allan55aa6982011-12-16 00:45:45 +0000742static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring *rx_ring,
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000743 int cleaned_count, gfp_t gfp)
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700744{
Bruce Allan55aa6982011-12-16 00:45:45 +0000745 struct e1000_adapter *adapter = rx_ring->adapter;
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700746 struct net_device *netdev = adapter->netdev;
747 struct pci_dev *pdev = adapter->pdev;
Bruce Allan5f450212011-07-22 06:21:46 +0000748 union e1000_rx_desc_extended *rx_desc;
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700749 struct e1000_buffer *buffer_info;
750 struct sk_buff *skb;
751 unsigned int i;
Eric Dumazet89d71a62009-10-13 05:34:20 +0000752 unsigned int bufsz = 256 - 16 /* for skb_reserve */;
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700753
754 i = rx_ring->next_to_use;
755 buffer_info = &rx_ring->buffer_info[i];
756
757 while (cleaned_count--) {
758 skb = buffer_info->skb;
759 if (skb) {
760 skb_trim(skb, 0);
761 goto check_page;
762 }
763
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000764 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp);
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700765 if (unlikely(!skb)) {
766 /* Better luck next round */
767 adapter->alloc_rx_buff_failed++;
768 break;
769 }
770
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700771 buffer_info->skb = skb;
772check_page:
773 /* allocate a new page if necessary */
774 if (!buffer_info->page) {
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000775 buffer_info->page = alloc_page(gfp);
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700776 if (unlikely(!buffer_info->page)) {
777 adapter->alloc_rx_buff_failed++;
778 break;
779 }
780 }
781
782 if (!buffer_info->dma)
Nick Nunley0be3f552010-04-27 13:09:05 +0000783 buffer_info->dma = dma_map_page(&pdev->dev,
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700784 buffer_info->page, 0,
785 PAGE_SIZE,
Nick Nunley0be3f552010-04-27 13:09:05 +0000786 DMA_FROM_DEVICE);
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700787
Bruce Allan5f450212011-07-22 06:21:46 +0000788 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
789 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700790
791 if (unlikely(++i == rx_ring->count))
792 i = 0;
793 buffer_info = &rx_ring->buffer_info[i];
794 }
795
796 if (likely(rx_ring->next_to_use != i)) {
797 rx_ring->next_to_use = i;
798 if (unlikely(i-- == 0))
799 i = (rx_ring->count - 1);
800
801 /* Force memory writes to complete before letting h/w
802 * know there are new descriptors to fetch. (Only
803 * applicable for weak-ordered memory model archs,
804 * such as IA-64). */
805 wmb();
David S. Miller823dcd22011-08-20 10:39:12 -0700806 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
Bruce Allan55aa6982011-12-16 00:45:45 +0000807 e1000e_update_rdt_wa(rx_ring, i);
David S. Miller823dcd22011-08-20 10:39:12 -0700808 else
Bruce Allanc5083cf2011-12-16 00:45:40 +0000809 writel(i, rx_ring->tail);
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700810 }
811}
812
Bruce Allan70495a52012-01-11 01:26:50 +0000813static inline void e1000_rx_hash(struct net_device *netdev, __le32 rss,
814 struct sk_buff *skb)
815{
816 if (netdev->features & NETIF_F_RXHASH)
817 skb->rxhash = le32_to_cpu(rss);
818}
819
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700820/**
Bruce Allan55aa6982011-12-16 00:45:45 +0000821 * e1000_clean_rx_irq - Send received data up the network stack
822 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -0700823 *
824 * the return value indicates whether actual cleaning was done, there
825 * is no guarantee that everything was cleaned
826 **/
Bruce Allan55aa6982011-12-16 00:45:45 +0000827static bool e1000_clean_rx_irq(struct e1000_ring *rx_ring, int *work_done,
828 int work_to_do)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700829{
Bruce Allan55aa6982011-12-16 00:45:45 +0000830 struct e1000_adapter *adapter = rx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700831 struct net_device *netdev = adapter->netdev;
832 struct pci_dev *pdev = adapter->pdev;
Bruce Allan3bb99fe2009-11-20 23:25:07 +0000833 struct e1000_hw *hw = &adapter->hw;
Bruce Allan5f450212011-07-22 06:21:46 +0000834 union e1000_rx_desc_extended *rx_desc, *next_rxd;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700835 struct e1000_buffer *buffer_info, *next_buffer;
Bruce Allan5f450212011-07-22 06:21:46 +0000836 u32 length, staterr;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700837 unsigned int i;
838 int cleaned_count = 0;
Rusty Russell3db1cd52011-12-19 13:56:45 +0000839 bool cleaned = false;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700840 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
841
842 i = rx_ring->next_to_clean;
Bruce Allan5f450212011-07-22 06:21:46 +0000843 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
844 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700845 buffer_info = &rx_ring->buffer_info[i];
846
Bruce Allan5f450212011-07-22 06:21:46 +0000847 while (staterr & E1000_RXD_STAT_DD) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700848 struct sk_buff *skb;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700849
850 if (*work_done >= work_to_do)
851 break;
852 (*work_done)++;
Jeff Kirsher2d0bb1c2010-08-08 16:02:31 +0000853 rmb(); /* read descriptor and rx_buffer_info after status DD */
Auke Kokbc7f75f2007-09-17 12:30:59 -0700854
Auke Kokbc7f75f2007-09-17 12:30:59 -0700855 skb = buffer_info->skb;
856 buffer_info->skb = NULL;
857
858 prefetch(skb->data - NET_IP_ALIGN);
859
860 i++;
861 if (i == rx_ring->count)
862 i = 0;
Bruce Allan5f450212011-07-22 06:21:46 +0000863 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700864 prefetch(next_rxd);
865
866 next_buffer = &rx_ring->buffer_info[i];
867
Rusty Russell3db1cd52011-12-19 13:56:45 +0000868 cleaned = true;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700869 cleaned_count++;
Nick Nunley0be3f552010-04-27 13:09:05 +0000870 dma_unmap_single(&pdev->dev,
Auke Kokbc7f75f2007-09-17 12:30:59 -0700871 buffer_info->dma,
872 adapter->rx_buffer_len,
Nick Nunley0be3f552010-04-27 13:09:05 +0000873 DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700874 buffer_info->dma = 0;
875
Bruce Allan5f450212011-07-22 06:21:46 +0000876 length = le16_to_cpu(rx_desc->wb.upper.length);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700877
Jesse Brandeburgb94b5022010-01-19 14:15:59 +0000878 /*
879 * !EOP means multiple descriptors were used to store a single
880 * packet, if that's the case we need to toss it. In fact, we
881 * need to toss every packet with the EOP bit clear and the
882 * next frame that _does_ have the EOP bit set, as it is by
883 * definition only a frame fragment
884 */
Bruce Allan5f450212011-07-22 06:21:46 +0000885 if (unlikely(!(staterr & E1000_RXD_STAT_EOP)))
Jesse Brandeburgb94b5022010-01-19 14:15:59 +0000886 adapter->flags2 |= FLAG2_IS_DISCARDING;
887
888 if (adapter->flags2 & FLAG2_IS_DISCARDING) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700889 /* All receives must fit into a single buffer */
Bruce Allan3bb99fe2009-11-20 23:25:07 +0000890 e_dbg("Receive packet consumed multiple buffers\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -0700891 /* recycle */
892 buffer_info->skb = skb;
Bruce Allan5f450212011-07-22 06:21:46 +0000893 if (staterr & E1000_RXD_STAT_EOP)
Jesse Brandeburgb94b5022010-01-19 14:15:59 +0000894 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700895 goto next_desc;
896 }
897
Ben Greearcf955e62012-02-11 15:39:51 +0000898 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
899 !(netdev->features & NETIF_F_RXALL))) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700900 /* recycle */
901 buffer_info->skb = skb;
902 goto next_desc;
903 }
904
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +0000905 /* adjust length to remove Ethernet CRC */
Ben Greear01840392012-02-11 15:39:25 +0000906 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
907 /* If configured to store CRC, don't subtract FCS,
908 * but keep the FCS bytes out of the total_rx_bytes
909 * counter
910 */
911 if (netdev->features & NETIF_F_RXFCS)
912 total_rx_bytes -= 4;
913 else
914 length -= 4;
915 }
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +0000916
Auke Kokbc7f75f2007-09-17 12:30:59 -0700917 total_rx_bytes += length;
918 total_rx_packets++;
919
Bruce Allanad680762008-03-28 09:15:03 -0700920 /*
921 * code added for copybreak, this should improve
Auke Kokbc7f75f2007-09-17 12:30:59 -0700922 * performance for small packets with large amounts
Bruce Allanad680762008-03-28 09:15:03 -0700923 * of reassembly being done in the stack
924 */
Auke Kokbc7f75f2007-09-17 12:30:59 -0700925 if (length < copybreak) {
926 struct sk_buff *new_skb =
Eric Dumazet89d71a62009-10-13 05:34:20 +0000927 netdev_alloc_skb_ip_align(netdev, length);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700928 if (new_skb) {
Bruce Allan808ff672008-08-08 18:35:56 -0700929 skb_copy_to_linear_data_offset(new_skb,
930 -NET_IP_ALIGN,
931 (skb->data -
932 NET_IP_ALIGN),
933 (length +
934 NET_IP_ALIGN));
Auke Kokbc7f75f2007-09-17 12:30:59 -0700935 /* save the skb in buffer_info as good */
936 buffer_info->skb = skb;
937 skb = new_skb;
938 }
939 /* else just continue with the old one */
940 }
941 /* end copybreak code */
942 skb_put(skb, length);
943
944 /* Receive Checksum Offload */
Bruce Allan2e1706f2012-06-30 20:02:42 +0000945 e1000_rx_checksum(adapter, staterr, skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700946
Bruce Allan70495a52012-01-11 01:26:50 +0000947 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
948
Bruce Allan5f450212011-07-22 06:21:46 +0000949 e1000_receive_skb(adapter, netdev, skb, staterr,
950 rx_desc->wb.upper.vlan);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700951
952next_desc:
Bruce Allan5f450212011-07-22 06:21:46 +0000953 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700954
955 /* return some buffers to hardware, one at a time is too slow */
956 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
Bruce Allan55aa6982011-12-16 00:45:45 +0000957 adapter->alloc_rx_buf(rx_ring, cleaned_count,
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000958 GFP_ATOMIC);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700959 cleaned_count = 0;
960 }
961
962 /* use prefetched values */
963 rx_desc = next_rxd;
964 buffer_info = next_buffer;
Bruce Allan5f450212011-07-22 06:21:46 +0000965
966 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700967 }
968 rx_ring->next_to_clean = i;
969
970 cleaned_count = e1000_desc_unused(rx_ring);
971 if (cleaned_count)
Bruce Allan55aa6982011-12-16 00:45:45 +0000972 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700973
Auke Kokbc7f75f2007-09-17 12:30:59 -0700974 adapter->total_rx_bytes += total_rx_bytes;
Bruce Allan7c257692008-04-23 11:09:00 -0700975 adapter->total_rx_packets += total_rx_packets;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700976 return cleaned;
977}
978
Bruce Allan55aa6982011-12-16 00:45:45 +0000979static void e1000_put_txbuf(struct e1000_ring *tx_ring,
980 struct e1000_buffer *buffer_info)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700981{
Bruce Allan55aa6982011-12-16 00:45:45 +0000982 struct e1000_adapter *adapter = tx_ring->adapter;
983
Alexander Duyck03b13202009-12-02 16:45:31 +0000984 if (buffer_info->dma) {
985 if (buffer_info->mapped_as_page)
Nick Nunley0be3f552010-04-27 13:09:05 +0000986 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma,
987 buffer_info->length, DMA_TO_DEVICE);
Alexander Duyck03b13202009-12-02 16:45:31 +0000988 else
Nick Nunley0be3f552010-04-27 13:09:05 +0000989 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma,
990 buffer_info->length, DMA_TO_DEVICE);
Alexander Duyck03b13202009-12-02 16:45:31 +0000991 buffer_info->dma = 0;
992 }
Auke Kokbc7f75f2007-09-17 12:30:59 -0700993 if (buffer_info->skb) {
994 dev_kfree_skb_any(buffer_info->skb);
995 buffer_info->skb = NULL;
996 }
Alexander Duyck1b7719c2009-03-19 01:12:50 +0000997 buffer_info->time_stamp = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700998}
999
Bruce Allan41cec6f2009-11-20 23:28:56 +00001000static void e1000_print_hw_hang(struct work_struct *work)
Auke Kokbc7f75f2007-09-17 12:30:59 -07001001{
Bruce Allan41cec6f2009-11-20 23:28:56 +00001002 struct e1000_adapter *adapter = container_of(work,
1003 struct e1000_adapter,
1004 print_hang_task);
Jeff Kirsher09357b02011-11-18 14:25:00 +00001005 struct net_device *netdev = adapter->netdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001006 struct e1000_ring *tx_ring = adapter->tx_ring;
1007 unsigned int i = tx_ring->next_to_clean;
1008 unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
1009 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop);
Bruce Allan41cec6f2009-11-20 23:28:56 +00001010 struct e1000_hw *hw = &adapter->hw;
1011 u16 phy_status, phy_1000t_status, phy_ext_status;
1012 u16 pci_status;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001013
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00001014 if (test_bit(__E1000_DOWN, &adapter->state))
1015 return;
1016
Jeff Kirsher09357b02011-11-18 14:25:00 +00001017 if (!adapter->tx_hang_recheck &&
1018 (adapter->flags2 & FLAG2_DMA_BURST)) {
Matthew Vick397c0202012-03-16 09:03:01 +00001019 /*
1020 * May be block on write-back, flush and detect again
Jeff Kirsher09357b02011-11-18 14:25:00 +00001021 * flush pending descriptor writebacks to memory
1022 */
1023 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
1024 /* execute the writes immediately */
1025 e1e_flush();
Matthew Vickbf030852012-03-16 09:03:00 +00001026 /*
1027 * Due to rare timing issues, write to TIDV again to ensure
1028 * the write is successful
1029 */
1030 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
1031 /* execute the writes immediately */
1032 e1e_flush();
Jeff Kirsher09357b02011-11-18 14:25:00 +00001033 adapter->tx_hang_recheck = true;
1034 return;
1035 }
1036 /* Real hang detected */
1037 adapter->tx_hang_recheck = false;
1038 netif_stop_queue(netdev);
1039
Bruce Allan41cec6f2009-11-20 23:28:56 +00001040 e1e_rphy(hw, PHY_STATUS, &phy_status);
1041 e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status);
1042 e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status);
1043
1044 pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status);
1045
1046 /* detected Hardware unit hang */
1047 e_err("Detected Hardware Unit Hang:\n"
Jeff Kirsher44defeb2008-08-04 17:20:41 -07001048 " TDH <%x>\n"
1049 " TDT <%x>\n"
1050 " next_to_use <%x>\n"
1051 " next_to_clean <%x>\n"
1052 "buffer_info[next_to_clean]:\n"
1053 " time_stamp <%lx>\n"
1054 " next_to_watch <%x>\n"
1055 " jiffies <%lx>\n"
Bruce Allan41cec6f2009-11-20 23:28:56 +00001056 " next_to_watch.status <%x>\n"
1057 "MAC Status <%x>\n"
1058 "PHY Status <%x>\n"
1059 "PHY 1000BASE-T Status <%x>\n"
1060 "PHY Extended Status <%x>\n"
1061 "PCI Status <%x>\n",
Bruce Allanc5083cf2011-12-16 00:45:40 +00001062 readl(tx_ring->head),
1063 readl(tx_ring->tail),
Jeff Kirsher44defeb2008-08-04 17:20:41 -07001064 tx_ring->next_to_use,
1065 tx_ring->next_to_clean,
1066 tx_ring->buffer_info[eop].time_stamp,
1067 eop,
1068 jiffies,
Bruce Allan41cec6f2009-11-20 23:28:56 +00001069 eop_desc->upper.fields.status,
1070 er32(STATUS),
1071 phy_status,
1072 phy_1000t_status,
1073 phy_ext_status,
1074 pci_status);
Bruce Allan7c0427e2012-03-20 03:48:08 +00001075
1076 /* Suggest workaround for known h/w issue */
1077 if ((hw->mac.type == e1000_pchlan) && (er32(CTRL) & E1000_CTRL_TFCE))
1078 e_err("Try turning off Tx pause (flow control) via ethtool\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07001079}
1080
1081/**
1082 * e1000_clean_tx_irq - Reclaim resources after transmit completes
Bruce Allan55aa6982011-12-16 00:45:45 +00001083 * @tx_ring: Tx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07001084 *
1085 * the return value indicates whether actual cleaning was done, there
1086 * is no guarantee that everything was cleaned
1087 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00001088static bool e1000_clean_tx_irq(struct e1000_ring *tx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07001089{
Bruce Allan55aa6982011-12-16 00:45:45 +00001090 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001091 struct net_device *netdev = adapter->netdev;
1092 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001093 struct e1000_tx_desc *tx_desc, *eop_desc;
1094 struct e1000_buffer *buffer_info;
1095 unsigned int i, eop;
1096 unsigned int count = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001097 unsigned int total_tx_bytes = 0, total_tx_packets = 0;
Tom Herbert3f0cfa32011-11-28 16:33:16 +00001098 unsigned int bytes_compl = 0, pkts_compl = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001099
1100 i = tx_ring->next_to_clean;
1101 eop = tx_ring->buffer_info[i].next_to_watch;
1102 eop_desc = E1000_TX_DESC(*tx_ring, eop);
1103
Alexander Duyck12d04a32009-03-25 22:05:03 +00001104 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
1105 (count < tx_ring->count)) {
Jesse Brandeburga86043c2009-04-16 16:59:28 +00001106 bool cleaned = false;
Jeff Kirsher2d0bb1c2010-08-08 16:02:31 +00001107 rmb(); /* read buffer_info after eop_desc */
Jesse Brandeburga86043c2009-04-16 16:59:28 +00001108 for (; !cleaned; count++) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07001109 tx_desc = E1000_TX_DESC(*tx_ring, i);
1110 buffer_info = &tx_ring->buffer_info[i];
1111 cleaned = (i == eop);
1112
1113 if (cleaned) {
Tom Herbert9ed318d2010-05-05 14:02:27 +00001114 total_tx_packets += buffer_info->segs;
1115 total_tx_bytes += buffer_info->bytecount;
Tom Herbert3f0cfa32011-11-28 16:33:16 +00001116 if (buffer_info->skb) {
1117 bytes_compl += buffer_info->skb->len;
1118 pkts_compl++;
1119 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07001120 }
1121
Bruce Allan55aa6982011-12-16 00:45:45 +00001122 e1000_put_txbuf(tx_ring, buffer_info);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001123 tx_desc->upper.data = 0;
1124
1125 i++;
1126 if (i == tx_ring->count)
1127 i = 0;
1128 }
1129
Terry Loftindac87612010-04-09 10:29:49 +00001130 if (i == tx_ring->next_to_use)
1131 break;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001132 eop = tx_ring->buffer_info[i].next_to_watch;
1133 eop_desc = E1000_TX_DESC(*tx_ring, eop);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001134 }
1135
1136 tx_ring->next_to_clean = i;
1137
Tom Herbert3f0cfa32011-11-28 16:33:16 +00001138 netdev_completed_queue(netdev, pkts_compl, bytes_compl);
1139
Auke Kokbc7f75f2007-09-17 12:30:59 -07001140#define TX_WAKE_THRESHOLD 32
Jesse Brandeburga86043c2009-04-16 16:59:28 +00001141 if (count && netif_carrier_ok(netdev) &&
1142 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07001143 /* Make sure that anybody stopping the queue after this
1144 * sees the new next_to_clean.
1145 */
1146 smp_mb();
1147
1148 if (netif_queue_stopped(netdev) &&
1149 !(test_bit(__E1000_DOWN, &adapter->state))) {
1150 netif_wake_queue(netdev);
1151 ++adapter->restart_queue;
1152 }
1153 }
1154
1155 if (adapter->detect_tx_hung) {
Bruce Allan41cec6f2009-11-20 23:28:56 +00001156 /*
1157 * Detect a transmit hang in hardware, this serializes the
1158 * check with the clearing of time_stamp and movement of i
1159 */
Rusty Russell3db1cd52011-12-19 13:56:45 +00001160 adapter->detect_tx_hung = false;
Alexander Duyck12d04a32009-03-25 22:05:03 +00001161 if (tx_ring->buffer_info[i].time_stamp &&
1162 time_after(jiffies, tx_ring->buffer_info[i].time_stamp
Joe Perches8e95a202009-12-03 07:58:21 +00001163 + (adapter->tx_timeout_factor * HZ)) &&
Jeff Kirsher09357b02011-11-18 14:25:00 +00001164 !(er32(STATUS) & E1000_STATUS_TXOFF))
Bruce Allan41cec6f2009-11-20 23:28:56 +00001165 schedule_work(&adapter->print_hang_task);
Jeff Kirsher09357b02011-11-18 14:25:00 +00001166 else
1167 adapter->tx_hang_recheck = false;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001168 }
1169 adapter->total_tx_bytes += total_tx_bytes;
1170 adapter->total_tx_packets += total_tx_packets;
Eric Dumazet807540b2010-09-23 05:40:09 +00001171 return count < tx_ring->count;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001172}
1173
1174/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07001175 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
Bruce Allan55aa6982011-12-16 00:45:45 +00001176 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07001177 *
1178 * the return value indicates whether actual cleaning was done, there
1179 * is no guarantee that everything was cleaned
1180 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00001181static bool e1000_clean_rx_irq_ps(struct e1000_ring *rx_ring, int *work_done,
1182 int work_to_do)
Auke Kokbc7f75f2007-09-17 12:30:59 -07001183{
Bruce Allan55aa6982011-12-16 00:45:45 +00001184 struct e1000_adapter *adapter = rx_ring->adapter;
Bruce Allan3bb99fe2009-11-20 23:25:07 +00001185 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001186 union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
1187 struct net_device *netdev = adapter->netdev;
1188 struct pci_dev *pdev = adapter->pdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001189 struct e1000_buffer *buffer_info, *next_buffer;
1190 struct e1000_ps_page *ps_page;
1191 struct sk_buff *skb;
1192 unsigned int i, j;
1193 u32 length, staterr;
1194 int cleaned_count = 0;
Rusty Russell3db1cd52011-12-19 13:56:45 +00001195 bool cleaned = false;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001196 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
1197
1198 i = rx_ring->next_to_clean;
1199 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
1200 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1201 buffer_info = &rx_ring->buffer_info[i];
1202
1203 while (staterr & E1000_RXD_STAT_DD) {
1204 if (*work_done >= work_to_do)
1205 break;
1206 (*work_done)++;
1207 skb = buffer_info->skb;
Jeff Kirsher2d0bb1c2010-08-08 16:02:31 +00001208 rmb(); /* read descriptor and rx_buffer_info after status DD */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001209
1210 /* in the packet split case this is header only */
1211 prefetch(skb->data - NET_IP_ALIGN);
1212
1213 i++;
1214 if (i == rx_ring->count)
1215 i = 0;
1216 next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
1217 prefetch(next_rxd);
1218
1219 next_buffer = &rx_ring->buffer_info[i];
1220
Rusty Russell3db1cd52011-12-19 13:56:45 +00001221 cleaned = true;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001222 cleaned_count++;
Nick Nunley0be3f552010-04-27 13:09:05 +00001223 dma_unmap_single(&pdev->dev, buffer_info->dma,
Bruce Allanaf667a22010-12-31 06:10:01 +00001224 adapter->rx_ps_bsize0, DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001225 buffer_info->dma = 0;
1226
Bruce Allanaf667a22010-12-31 06:10:01 +00001227 /* see !EOP comment in other Rx routine */
Jesse Brandeburgb94b5022010-01-19 14:15:59 +00001228 if (!(staterr & E1000_RXD_STAT_EOP))
1229 adapter->flags2 |= FLAG2_IS_DISCARDING;
1230
1231 if (adapter->flags2 & FLAG2_IS_DISCARDING) {
Jeff Kirsheref456f82011-11-03 11:40:28 +00001232 e_dbg("Packet Split buffers didn't pick up the full packet\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07001233 dev_kfree_skb_irq(skb);
Jesse Brandeburgb94b5022010-01-19 14:15:59 +00001234 if (staterr & E1000_RXD_STAT_EOP)
1235 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001236 goto next_desc;
1237 }
1238
Ben Greearcf955e62012-02-11 15:39:51 +00001239 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
1240 !(netdev->features & NETIF_F_RXALL))) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07001241 dev_kfree_skb_irq(skb);
1242 goto next_desc;
1243 }
1244
1245 length = le16_to_cpu(rx_desc->wb.middle.length0);
1246
1247 if (!length) {
Jeff Kirsheref456f82011-11-03 11:40:28 +00001248 e_dbg("Last part of the packet spanning multiple descriptors\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07001249 dev_kfree_skb_irq(skb);
1250 goto next_desc;
1251 }
1252
1253 /* Good Receive */
1254 skb_put(skb, length);
1255
1256 {
Bruce Allan0e15df42012-01-31 06:37:11 +00001257 /*
1258 * this looks ugly, but it seems compiler issues make
1259 * it more efficient than reusing j
1260 */
1261 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001262
Bruce Allanad680762008-03-28 09:15:03 -07001263 /*
Bruce Allan0e15df42012-01-31 06:37:11 +00001264 * page alloc/put takes too long and effects small
1265 * packet throughput, so unsplit small packets and
1266 * save the alloc/put only valid in softirq (napi)
1267 * context to call kmap_*
Bruce Allanad680762008-03-28 09:15:03 -07001268 */
Bruce Allan0e15df42012-01-31 06:37:11 +00001269 if (l1 && (l1 <= copybreak) &&
1270 ((length + l1) <= adapter->rx_ps_bsize0)) {
1271 u8 *vaddr;
Auke Kok140a7482007-10-25 13:57:58 -07001272
Bruce Allan0e15df42012-01-31 06:37:11 +00001273 ps_page = &buffer_info->ps_pages[0];
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +00001274
Bruce Allan0e15df42012-01-31 06:37:11 +00001275 /*
1276 * there is no documentation about how to call
1277 * kmap_atomic, so we can't hold the mapping
1278 * very long
1279 */
1280 dma_sync_single_for_cpu(&pdev->dev,
1281 ps_page->dma,
1282 PAGE_SIZE,
1283 DMA_FROM_DEVICE);
Linus Torvalds9f393832012-03-21 09:40:26 -07001284 vaddr = kmap_atomic(ps_page->page);
Bruce Allan0e15df42012-01-31 06:37:11 +00001285 memcpy(skb_tail_pointer(skb), vaddr, l1);
Linus Torvalds9f393832012-03-21 09:40:26 -07001286 kunmap_atomic(vaddr);
Bruce Allan0e15df42012-01-31 06:37:11 +00001287 dma_sync_single_for_device(&pdev->dev,
1288 ps_page->dma,
1289 PAGE_SIZE,
1290 DMA_FROM_DEVICE);
1291
1292 /* remove the CRC */
Ben Greear01840392012-02-11 15:39:25 +00001293 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
1294 if (!(netdev->features & NETIF_F_RXFCS))
1295 l1 -= 4;
1296 }
Bruce Allan0e15df42012-01-31 06:37:11 +00001297
1298 skb_put(skb, l1);
1299 goto copydone;
1300 } /* if */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001301 }
1302
1303 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
1304 length = le16_to_cpu(rx_desc->wb.upper.length[j]);
1305 if (!length)
1306 break;
1307
Auke Kok47f44e42007-10-25 13:57:44 -07001308 ps_page = &buffer_info->ps_pages[j];
Nick Nunley0be3f552010-04-27 13:09:05 +00001309 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
1310 DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001311 ps_page->dma = 0;
1312 skb_fill_page_desc(skb, j, ps_page->page, 0, length);
1313 ps_page->page = NULL;
1314 skb->len += length;
1315 skb->data_len += length;
Eric Dumazet98a045d2011-10-13 08:03:36 +00001316 skb->truesize += PAGE_SIZE;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001317 }
1318
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +00001319 /* strip the ethernet crc, problem is we're using pages now so
1320 * this whole operation can get a little cpu intensive
1321 */
Ben Greear01840392012-02-11 15:39:25 +00001322 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
1323 if (!(netdev->features & NETIF_F_RXFCS))
1324 pskb_trim(skb, skb->len - 4);
1325 }
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +00001326
Auke Kokbc7f75f2007-09-17 12:30:59 -07001327copydone:
1328 total_rx_bytes += skb->len;
1329 total_rx_packets++;
1330
Bruce Allan2e1706f2012-06-30 20:02:42 +00001331 e1000_rx_checksum(adapter, staterr, skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001332
Bruce Allan70495a52012-01-11 01:26:50 +00001333 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
1334
Auke Kokbc7f75f2007-09-17 12:30:59 -07001335 if (rx_desc->wb.upper.header_status &
1336 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))
1337 adapter->rx_hdr_split++;
1338
1339 e1000_receive_skb(adapter, netdev, skb,
1340 staterr, rx_desc->wb.middle.vlan);
1341
1342next_desc:
1343 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
1344 buffer_info->skb = NULL;
1345
1346 /* return some buffers to hardware, one at a time is too slow */
1347 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
Bruce Allan55aa6982011-12-16 00:45:45 +00001348 adapter->alloc_rx_buf(rx_ring, cleaned_count,
Jeff Kirsherc2fed992011-07-12 16:10:12 +00001349 GFP_ATOMIC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001350 cleaned_count = 0;
1351 }
1352
1353 /* use prefetched values */
1354 rx_desc = next_rxd;
1355 buffer_info = next_buffer;
1356
1357 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1358 }
1359 rx_ring->next_to_clean = i;
1360
1361 cleaned_count = e1000_desc_unused(rx_ring);
1362 if (cleaned_count)
Bruce Allan55aa6982011-12-16 00:45:45 +00001363 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001364
Auke Kokbc7f75f2007-09-17 12:30:59 -07001365 adapter->total_rx_bytes += total_rx_bytes;
Bruce Allan7c257692008-04-23 11:09:00 -07001366 adapter->total_rx_packets += total_rx_packets;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001367 return cleaned;
1368}
1369
1370/**
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001371 * e1000_consume_page - helper function
1372 **/
1373static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
1374 u16 length)
1375{
1376 bi->page = NULL;
1377 skb->len += length;
1378 skb->data_len += length;
Eric Dumazet98a045d2011-10-13 08:03:36 +00001379 skb->truesize += PAGE_SIZE;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001380}
1381
1382/**
1383 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1384 * @adapter: board private structure
1385 *
1386 * the return value indicates whether actual cleaning was done, there
1387 * is no guarantee that everything was cleaned
1388 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00001389static bool e1000_clean_jumbo_rx_irq(struct e1000_ring *rx_ring, int *work_done,
1390 int work_to_do)
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001391{
Bruce Allan55aa6982011-12-16 00:45:45 +00001392 struct e1000_adapter *adapter = rx_ring->adapter;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001393 struct net_device *netdev = adapter->netdev;
1394 struct pci_dev *pdev = adapter->pdev;
Bruce Allan5f450212011-07-22 06:21:46 +00001395 union e1000_rx_desc_extended *rx_desc, *next_rxd;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001396 struct e1000_buffer *buffer_info, *next_buffer;
Bruce Allan5f450212011-07-22 06:21:46 +00001397 u32 length, staterr;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001398 unsigned int i;
1399 int cleaned_count = 0;
1400 bool cleaned = false;
1401 unsigned int total_rx_bytes=0, total_rx_packets=0;
1402
1403 i = rx_ring->next_to_clean;
Bruce Allan5f450212011-07-22 06:21:46 +00001404 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
1405 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001406 buffer_info = &rx_ring->buffer_info[i];
1407
Bruce Allan5f450212011-07-22 06:21:46 +00001408 while (staterr & E1000_RXD_STAT_DD) {
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001409 struct sk_buff *skb;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001410
1411 if (*work_done >= work_to_do)
1412 break;
1413 (*work_done)++;
Jeff Kirsher2d0bb1c2010-08-08 16:02:31 +00001414 rmb(); /* read descriptor and rx_buffer_info after status DD */
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001415
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001416 skb = buffer_info->skb;
1417 buffer_info->skb = NULL;
1418
1419 ++i;
1420 if (i == rx_ring->count)
1421 i = 0;
Bruce Allan5f450212011-07-22 06:21:46 +00001422 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001423 prefetch(next_rxd);
1424
1425 next_buffer = &rx_ring->buffer_info[i];
1426
1427 cleaned = true;
1428 cleaned_count++;
Nick Nunley0be3f552010-04-27 13:09:05 +00001429 dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE,
1430 DMA_FROM_DEVICE);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001431 buffer_info->dma = 0;
1432
Bruce Allan5f450212011-07-22 06:21:46 +00001433 length = le16_to_cpu(rx_desc->wb.upper.length);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001434
1435 /* errors is only valid for DD + EOP descriptors */
Bruce Allan5f450212011-07-22 06:21:46 +00001436 if (unlikely((staterr & E1000_RXD_STAT_EOP) &&
Ben Greearcf955e62012-02-11 15:39:51 +00001437 ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
1438 !(netdev->features & NETIF_F_RXALL)))) {
Bruce Allan5f450212011-07-22 06:21:46 +00001439 /* recycle both page and skb */
1440 buffer_info->skb = skb;
1441 /* an error means any chain goes out the window too */
1442 if (rx_ring->rx_skb_top)
1443 dev_kfree_skb_irq(rx_ring->rx_skb_top);
1444 rx_ring->rx_skb_top = NULL;
1445 goto next_desc;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001446 }
1447
Bruce Allanf0f1a172010-12-11 05:53:32 +00001448#define rxtop (rx_ring->rx_skb_top)
Bruce Allan5f450212011-07-22 06:21:46 +00001449 if (!(staterr & E1000_RXD_STAT_EOP)) {
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001450 /* this descriptor is only the beginning (or middle) */
1451 if (!rxtop) {
1452 /* this is the beginning of a chain */
1453 rxtop = skb;
1454 skb_fill_page_desc(rxtop, 0, buffer_info->page,
1455 0, length);
1456 } else {
1457 /* this is the middle of a chain */
1458 skb_fill_page_desc(rxtop,
1459 skb_shinfo(rxtop)->nr_frags,
1460 buffer_info->page, 0, length);
1461 /* re-use the skb, only consumed the page */
1462 buffer_info->skb = skb;
1463 }
1464 e1000_consume_page(buffer_info, rxtop, length);
1465 goto next_desc;
1466 } else {
1467 if (rxtop) {
1468 /* end of the chain */
1469 skb_fill_page_desc(rxtop,
1470 skb_shinfo(rxtop)->nr_frags,
1471 buffer_info->page, 0, length);
1472 /* re-use the current skb, we only consumed the
1473 * page */
1474 buffer_info->skb = skb;
1475 skb = rxtop;
1476 rxtop = NULL;
1477 e1000_consume_page(buffer_info, skb, length);
1478 } else {
1479 /* no chain, got EOP, this buf is the packet
1480 * copybreak to save the put_page/alloc_page */
1481 if (length <= copybreak &&
1482 skb_tailroom(skb) >= length) {
1483 u8 *vaddr;
Cong Wang46790262011-11-25 23:14:23 +08001484 vaddr = kmap_atomic(buffer_info->page);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001485 memcpy(skb_tail_pointer(skb), vaddr,
1486 length);
Cong Wang46790262011-11-25 23:14:23 +08001487 kunmap_atomic(vaddr);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001488 /* re-use the page, so don't erase
1489 * buffer_info->page */
1490 skb_put(skb, length);
1491 } else {
1492 skb_fill_page_desc(skb, 0,
1493 buffer_info->page, 0,
1494 length);
1495 e1000_consume_page(buffer_info, skb,
1496 length);
1497 }
1498 }
1499 }
1500
Bruce Allan2e1706f2012-06-30 20:02:42 +00001501 /* Receive Checksum Offload */
1502 e1000_rx_checksum(adapter, staterr, skb);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001503
Bruce Allan70495a52012-01-11 01:26:50 +00001504 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
1505
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001506 /* probably a little skewed due to removing CRC */
1507 total_rx_bytes += skb->len;
1508 total_rx_packets++;
1509
1510 /* eth type trans needs skb->data to point to something */
1511 if (!pskb_may_pull(skb, ETH_HLEN)) {
Jeff Kirsher44defeb2008-08-04 17:20:41 -07001512 e_err("pskb_may_pull failed.\n");
Bruce Allanef5ab892011-02-10 08:17:21 +00001513 dev_kfree_skb_irq(skb);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001514 goto next_desc;
1515 }
1516
Bruce Allan5f450212011-07-22 06:21:46 +00001517 e1000_receive_skb(adapter, netdev, skb, staterr,
1518 rx_desc->wb.upper.vlan);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001519
1520next_desc:
Bruce Allan5f450212011-07-22 06:21:46 +00001521 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001522
1523 /* return some buffers to hardware, one at a time is too slow */
1524 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
Bruce Allan55aa6982011-12-16 00:45:45 +00001525 adapter->alloc_rx_buf(rx_ring, cleaned_count,
Jeff Kirsherc2fed992011-07-12 16:10:12 +00001526 GFP_ATOMIC);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001527 cleaned_count = 0;
1528 }
1529
1530 /* use prefetched values */
1531 rx_desc = next_rxd;
1532 buffer_info = next_buffer;
Bruce Allan5f450212011-07-22 06:21:46 +00001533
1534 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001535 }
1536 rx_ring->next_to_clean = i;
1537
1538 cleaned_count = e1000_desc_unused(rx_ring);
1539 if (cleaned_count)
Bruce Allan55aa6982011-12-16 00:45:45 +00001540 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001541
1542 adapter->total_rx_bytes += total_rx_bytes;
1543 adapter->total_rx_packets += total_rx_packets;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001544 return cleaned;
1545}
1546
1547/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07001548 * e1000_clean_rx_ring - Free Rx Buffers per Queue
Bruce Allan55aa6982011-12-16 00:45:45 +00001549 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07001550 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00001551static void e1000_clean_rx_ring(struct e1000_ring *rx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07001552{
Bruce Allan55aa6982011-12-16 00:45:45 +00001553 struct e1000_adapter *adapter = rx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001554 struct e1000_buffer *buffer_info;
1555 struct e1000_ps_page *ps_page;
1556 struct pci_dev *pdev = adapter->pdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001557 unsigned int i, j;
1558
1559 /* Free all the Rx ring sk_buffs */
1560 for (i = 0; i < rx_ring->count; i++) {
1561 buffer_info = &rx_ring->buffer_info[i];
1562 if (buffer_info->dma) {
1563 if (adapter->clean_rx == e1000_clean_rx_irq)
Nick Nunley0be3f552010-04-27 13:09:05 +00001564 dma_unmap_single(&pdev->dev, buffer_info->dma,
Auke Kokbc7f75f2007-09-17 12:30:59 -07001565 adapter->rx_buffer_len,
Nick Nunley0be3f552010-04-27 13:09:05 +00001566 DMA_FROM_DEVICE);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001567 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq)
Nick Nunley0be3f552010-04-27 13:09:05 +00001568 dma_unmap_page(&pdev->dev, buffer_info->dma,
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001569 PAGE_SIZE,
Nick Nunley0be3f552010-04-27 13:09:05 +00001570 DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001571 else if (adapter->clean_rx == e1000_clean_rx_irq_ps)
Nick Nunley0be3f552010-04-27 13:09:05 +00001572 dma_unmap_single(&pdev->dev, buffer_info->dma,
Auke Kokbc7f75f2007-09-17 12:30:59 -07001573 adapter->rx_ps_bsize0,
Nick Nunley0be3f552010-04-27 13:09:05 +00001574 DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001575 buffer_info->dma = 0;
1576 }
1577
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001578 if (buffer_info->page) {
1579 put_page(buffer_info->page);
1580 buffer_info->page = NULL;
1581 }
1582
Auke Kokbc7f75f2007-09-17 12:30:59 -07001583 if (buffer_info->skb) {
1584 dev_kfree_skb(buffer_info->skb);
1585 buffer_info->skb = NULL;
1586 }
1587
1588 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
Auke Kok47f44e42007-10-25 13:57:44 -07001589 ps_page = &buffer_info->ps_pages[j];
Auke Kokbc7f75f2007-09-17 12:30:59 -07001590 if (!ps_page->page)
1591 break;
Nick Nunley0be3f552010-04-27 13:09:05 +00001592 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
1593 DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001594 ps_page->dma = 0;
1595 put_page(ps_page->page);
1596 ps_page->page = NULL;
1597 }
1598 }
1599
1600 /* there also may be some cached data from a chained receive */
1601 if (rx_ring->rx_skb_top) {
1602 dev_kfree_skb(rx_ring->rx_skb_top);
1603 rx_ring->rx_skb_top = NULL;
1604 }
1605
Auke Kokbc7f75f2007-09-17 12:30:59 -07001606 /* Zero out the descriptor ring */
1607 memset(rx_ring->desc, 0, rx_ring->size);
1608
1609 rx_ring->next_to_clean = 0;
1610 rx_ring->next_to_use = 0;
Jesse Brandeburgb94b5022010-01-19 14:15:59 +00001611 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001612
Bruce Allanc5083cf2011-12-16 00:45:40 +00001613 writel(0, rx_ring->head);
Bruce Allanbdc125f2012-03-20 03:47:52 +00001614 if (rx_ring->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
1615 e1000e_update_rdt_wa(rx_ring, 0);
1616 else
1617 writel(0, rx_ring->tail);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001618}
1619
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07001620static void e1000e_downshift_workaround(struct work_struct *work)
1621{
1622 struct e1000_adapter *adapter = container_of(work,
1623 struct e1000_adapter, downshift_task);
1624
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00001625 if (test_bit(__E1000_DOWN, &adapter->state))
1626 return;
1627
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07001628 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw);
1629}
1630
Auke Kokbc7f75f2007-09-17 12:30:59 -07001631/**
1632 * e1000_intr_msi - Interrupt Handler
1633 * @irq: interrupt number
1634 * @data: pointer to a network interface device structure
1635 **/
1636static irqreturn_t e1000_intr_msi(int irq, void *data)
1637{
1638 struct net_device *netdev = data;
1639 struct e1000_adapter *adapter = netdev_priv(netdev);
1640 struct e1000_hw *hw = &adapter->hw;
1641 u32 icr = er32(ICR);
1642
Bruce Allanad680762008-03-28 09:15:03 -07001643 /*
1644 * read ICR disables interrupts using IAM
1645 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001646
dave graham573cca82009-02-10 12:52:05 +00001647 if (icr & E1000_ICR_LSC) {
Bruce Allanf92518d2012-02-01 11:16:42 +00001648 hw->mac.get_link_status = true;
Bruce Allanad680762008-03-28 09:15:03 -07001649 /*
1650 * ICH8 workaround-- Call gig speed drop workaround on cable
1651 * disconnect (LSC) before accessing any PHY registers
1652 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001653 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1654 (!(er32(STATUS) & E1000_STATUS_LU)))
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07001655 schedule_work(&adapter->downshift_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001656
Bruce Allanad680762008-03-28 09:15:03 -07001657 /*
1658 * 80003ES2LAN workaround-- For packet buffer work-around on
Auke Kokbc7f75f2007-09-17 12:30:59 -07001659 * link down event; disable receives here in the ISR and reset
Bruce Allanad680762008-03-28 09:15:03 -07001660 * adapter in watchdog
1661 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001662 if (netif_carrier_ok(netdev) &&
1663 adapter->flags & FLAG_RX_NEEDS_RESTART) {
1664 /* disable receives */
1665 u32 rctl = er32(RCTL);
1666 ew32(RCTL, rctl & ~E1000_RCTL_EN);
Jeff Kirsher318a94d2008-03-28 09:15:16 -07001667 adapter->flags |= FLAG_RX_RESTART_NOW;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001668 }
1669 /* guard against interrupt when we're going down */
1670 if (!test_bit(__E1000_DOWN, &adapter->state))
1671 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1672 }
1673
Ben Hutchings288379f2009-01-19 16:43:59 -08001674 if (napi_schedule_prep(&adapter->napi)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07001675 adapter->total_tx_bytes = 0;
1676 adapter->total_tx_packets = 0;
1677 adapter->total_rx_bytes = 0;
1678 adapter->total_rx_packets = 0;
Ben Hutchings288379f2009-01-19 16:43:59 -08001679 __napi_schedule(&adapter->napi);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001680 }
1681
1682 return IRQ_HANDLED;
1683}
1684
1685/**
1686 * e1000_intr - Interrupt Handler
1687 * @irq: interrupt number
1688 * @data: pointer to a network interface device structure
1689 **/
1690static irqreturn_t e1000_intr(int irq, void *data)
1691{
1692 struct net_device *netdev = data;
1693 struct e1000_adapter *adapter = netdev_priv(netdev);
1694 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001695 u32 rctl, icr = er32(ICR);
Bruce Allan4662e822008-08-26 18:37:06 -07001696
Bruce Allana68ea772009-11-20 23:23:16 +00001697 if (!icr || test_bit(__E1000_DOWN, &adapter->state))
Auke Kokbc7f75f2007-09-17 12:30:59 -07001698 return IRQ_NONE; /* Not our interrupt */
1699
Bruce Allanad680762008-03-28 09:15:03 -07001700 /*
1701 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1702 * not set, then the adapter didn't send an interrupt
1703 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001704 if (!(icr & E1000_ICR_INT_ASSERTED))
1705 return IRQ_NONE;
1706
Bruce Allanad680762008-03-28 09:15:03 -07001707 /*
1708 * Interrupt Auto-Mask...upon reading ICR,
1709 * interrupts are masked. No need for the
1710 * IMC write
1711 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001712
dave graham573cca82009-02-10 12:52:05 +00001713 if (icr & E1000_ICR_LSC) {
Bruce Allanf92518d2012-02-01 11:16:42 +00001714 hw->mac.get_link_status = true;
Bruce Allanad680762008-03-28 09:15:03 -07001715 /*
1716 * ICH8 workaround-- Call gig speed drop workaround on cable
1717 * disconnect (LSC) before accessing any PHY registers
1718 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001719 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1720 (!(er32(STATUS) & E1000_STATUS_LU)))
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07001721 schedule_work(&adapter->downshift_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001722
Bruce Allanad680762008-03-28 09:15:03 -07001723 /*
1724 * 80003ES2LAN workaround--
Auke Kokbc7f75f2007-09-17 12:30:59 -07001725 * For packet buffer work-around on link down event;
1726 * disable receives here in the ISR and
1727 * reset adapter in watchdog
1728 */
1729 if (netif_carrier_ok(netdev) &&
1730 (adapter->flags & FLAG_RX_NEEDS_RESTART)) {
1731 /* disable receives */
1732 rctl = er32(RCTL);
1733 ew32(RCTL, rctl & ~E1000_RCTL_EN);
Jeff Kirsher318a94d2008-03-28 09:15:16 -07001734 adapter->flags |= FLAG_RX_RESTART_NOW;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001735 }
1736 /* guard against interrupt when we're going down */
1737 if (!test_bit(__E1000_DOWN, &adapter->state))
1738 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1739 }
1740
Ben Hutchings288379f2009-01-19 16:43:59 -08001741 if (napi_schedule_prep(&adapter->napi)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07001742 adapter->total_tx_bytes = 0;
1743 adapter->total_tx_packets = 0;
1744 adapter->total_rx_bytes = 0;
1745 adapter->total_rx_packets = 0;
Ben Hutchings288379f2009-01-19 16:43:59 -08001746 __napi_schedule(&adapter->napi);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001747 }
1748
1749 return IRQ_HANDLED;
1750}
1751
Bruce Allan4662e822008-08-26 18:37:06 -07001752static irqreturn_t e1000_msix_other(int irq, void *data)
1753{
1754 struct net_device *netdev = data;
1755 struct e1000_adapter *adapter = netdev_priv(netdev);
1756 struct e1000_hw *hw = &adapter->hw;
1757 u32 icr = er32(ICR);
1758
1759 if (!(icr & E1000_ICR_INT_ASSERTED)) {
Jesse Brandeburga3c69fe2009-03-25 22:05:41 +00001760 if (!test_bit(__E1000_DOWN, &adapter->state))
1761 ew32(IMS, E1000_IMS_OTHER);
Bruce Allan4662e822008-08-26 18:37:06 -07001762 return IRQ_NONE;
1763 }
1764
1765 if (icr & adapter->eiac_mask)
1766 ew32(ICS, (icr & adapter->eiac_mask));
1767
1768 if (icr & E1000_ICR_OTHER) {
1769 if (!(icr & E1000_ICR_LSC))
1770 goto no_link_interrupt;
Bruce Allanf92518d2012-02-01 11:16:42 +00001771 hw->mac.get_link_status = true;
Bruce Allan4662e822008-08-26 18:37:06 -07001772 /* guard against interrupt when we're going down */
1773 if (!test_bit(__E1000_DOWN, &adapter->state))
1774 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1775 }
1776
1777no_link_interrupt:
Jesse Brandeburga3c69fe2009-03-25 22:05:41 +00001778 if (!test_bit(__E1000_DOWN, &adapter->state))
1779 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER);
Bruce Allan4662e822008-08-26 18:37:06 -07001780
1781 return IRQ_HANDLED;
1782}
1783
1784
1785static irqreturn_t e1000_intr_msix_tx(int irq, void *data)
1786{
1787 struct net_device *netdev = data;
1788 struct e1000_adapter *adapter = netdev_priv(netdev);
1789 struct e1000_hw *hw = &adapter->hw;
1790 struct e1000_ring *tx_ring = adapter->tx_ring;
1791
1792
1793 adapter->total_tx_bytes = 0;
1794 adapter->total_tx_packets = 0;
1795
Bruce Allan55aa6982011-12-16 00:45:45 +00001796 if (!e1000_clean_tx_irq(tx_ring))
Bruce Allan4662e822008-08-26 18:37:06 -07001797 /* Ring was not completely cleaned, so fire another interrupt */
1798 ew32(ICS, tx_ring->ims_val);
1799
1800 return IRQ_HANDLED;
1801}
1802
1803static irqreturn_t e1000_intr_msix_rx(int irq, void *data)
1804{
1805 struct net_device *netdev = data;
1806 struct e1000_adapter *adapter = netdev_priv(netdev);
Bruce Allan55aa6982011-12-16 00:45:45 +00001807 struct e1000_ring *rx_ring = adapter->rx_ring;
Bruce Allan4662e822008-08-26 18:37:06 -07001808
1809 /* Write the ITR value calculated at the end of the
1810 * previous interrupt.
1811 */
Bruce Allan55aa6982011-12-16 00:45:45 +00001812 if (rx_ring->set_itr) {
1813 writel(1000000000 / (rx_ring->itr_val * 256),
1814 rx_ring->itr_register);
1815 rx_ring->set_itr = 0;
Bruce Allan4662e822008-08-26 18:37:06 -07001816 }
1817
Ben Hutchings288379f2009-01-19 16:43:59 -08001818 if (napi_schedule_prep(&adapter->napi)) {
Bruce Allan4662e822008-08-26 18:37:06 -07001819 adapter->total_rx_bytes = 0;
1820 adapter->total_rx_packets = 0;
Ben Hutchings288379f2009-01-19 16:43:59 -08001821 __napi_schedule(&adapter->napi);
Bruce Allan4662e822008-08-26 18:37:06 -07001822 }
1823 return IRQ_HANDLED;
1824}
1825
1826/**
1827 * e1000_configure_msix - Configure MSI-X hardware
1828 *
1829 * e1000_configure_msix sets up the hardware to properly
1830 * generate MSI-X interrupts.
1831 **/
1832static void e1000_configure_msix(struct e1000_adapter *adapter)
1833{
1834 struct e1000_hw *hw = &adapter->hw;
1835 struct e1000_ring *rx_ring = adapter->rx_ring;
1836 struct e1000_ring *tx_ring = adapter->tx_ring;
1837 int vector = 0;
1838 u32 ctrl_ext, ivar = 0;
1839
1840 adapter->eiac_mask = 0;
1841
1842 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1843 if (hw->mac.type == e1000_82574) {
1844 u32 rfctl = er32(RFCTL);
1845 rfctl |= E1000_RFCTL_ACK_DIS;
1846 ew32(RFCTL, rfctl);
1847 }
1848
1849#define E1000_IVAR_INT_ALLOC_VALID 0x8
1850 /* Configure Rx vector */
1851 rx_ring->ims_val = E1000_IMS_RXQ0;
1852 adapter->eiac_mask |= rx_ring->ims_val;
1853 if (rx_ring->itr_val)
1854 writel(1000000000 / (rx_ring->itr_val * 256),
Bruce Allanc5083cf2011-12-16 00:45:40 +00001855 rx_ring->itr_register);
Bruce Allan4662e822008-08-26 18:37:06 -07001856 else
Bruce Allanc5083cf2011-12-16 00:45:40 +00001857 writel(1, rx_ring->itr_register);
Bruce Allan4662e822008-08-26 18:37:06 -07001858 ivar = E1000_IVAR_INT_ALLOC_VALID | vector;
1859
1860 /* Configure Tx vector */
1861 tx_ring->ims_val = E1000_IMS_TXQ0;
1862 vector++;
1863 if (tx_ring->itr_val)
1864 writel(1000000000 / (tx_ring->itr_val * 256),
Bruce Allanc5083cf2011-12-16 00:45:40 +00001865 tx_ring->itr_register);
Bruce Allan4662e822008-08-26 18:37:06 -07001866 else
Bruce Allanc5083cf2011-12-16 00:45:40 +00001867 writel(1, tx_ring->itr_register);
Bruce Allan4662e822008-08-26 18:37:06 -07001868 adapter->eiac_mask |= tx_ring->ims_val;
1869 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8);
1870
1871 /* set vector for Other Causes, e.g. link changes */
1872 vector++;
1873 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16);
1874 if (rx_ring->itr_val)
1875 writel(1000000000 / (rx_ring->itr_val * 256),
1876 hw->hw_addr + E1000_EITR_82574(vector));
1877 else
1878 writel(1, hw->hw_addr + E1000_EITR_82574(vector));
1879
1880 /* Cause Tx interrupts on every write back */
1881 ivar |= (1 << 31);
1882
1883 ew32(IVAR, ivar);
1884
1885 /* enable MSI-X PBA support */
1886 ctrl_ext = er32(CTRL_EXT);
1887 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR;
1888
1889 /* Auto-Mask Other interrupts upon ICR read */
1890#define E1000_EIAC_MASK_82574 0x01F00000
1891 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER);
1892 ctrl_ext |= E1000_CTRL_EXT_EIAME;
1893 ew32(CTRL_EXT, ctrl_ext);
1894 e1e_flush();
1895}
1896
1897void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter)
1898{
1899 if (adapter->msix_entries) {
1900 pci_disable_msix(adapter->pdev);
1901 kfree(adapter->msix_entries);
1902 adapter->msix_entries = NULL;
1903 } else if (adapter->flags & FLAG_MSI_ENABLED) {
1904 pci_disable_msi(adapter->pdev);
1905 adapter->flags &= ~FLAG_MSI_ENABLED;
1906 }
Bruce Allan4662e822008-08-26 18:37:06 -07001907}
1908
1909/**
1910 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1911 *
1912 * Attempt to configure interrupts using the best available
1913 * capabilities of the hardware and kernel.
1914 **/
1915void e1000e_set_interrupt_capability(struct e1000_adapter *adapter)
1916{
1917 int err;
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00001918 int i;
Bruce Allan4662e822008-08-26 18:37:06 -07001919
1920 switch (adapter->int_mode) {
1921 case E1000E_INT_MODE_MSIX:
1922 if (adapter->flags & FLAG_HAS_MSIX) {
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00001923 adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */
1924 adapter->msix_entries = kcalloc(adapter->num_vectors,
Bruce Allan4662e822008-08-26 18:37:06 -07001925 sizeof(struct msix_entry),
1926 GFP_KERNEL);
1927 if (adapter->msix_entries) {
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00001928 for (i = 0; i < adapter->num_vectors; i++)
Bruce Allan4662e822008-08-26 18:37:06 -07001929 adapter->msix_entries[i].entry = i;
1930
1931 err = pci_enable_msix(adapter->pdev,
1932 adapter->msix_entries,
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00001933 adapter->num_vectors);
Bruce Allanb1cdfea2010-12-11 05:53:47 +00001934 if (err == 0)
Bruce Allan4662e822008-08-26 18:37:06 -07001935 return;
1936 }
1937 /* MSI-X failed, so fall through and try MSI */
Jeff Kirsheref456f82011-11-03 11:40:28 +00001938 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n");
Bruce Allan4662e822008-08-26 18:37:06 -07001939 e1000e_reset_interrupt_capability(adapter);
1940 }
1941 adapter->int_mode = E1000E_INT_MODE_MSI;
1942 /* Fall through */
1943 case E1000E_INT_MODE_MSI:
1944 if (!pci_enable_msi(adapter->pdev)) {
1945 adapter->flags |= FLAG_MSI_ENABLED;
1946 } else {
1947 adapter->int_mode = E1000E_INT_MODE_LEGACY;
Jeff Kirsheref456f82011-11-03 11:40:28 +00001948 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n");
Bruce Allan4662e822008-08-26 18:37:06 -07001949 }
1950 /* Fall through */
1951 case E1000E_INT_MODE_LEGACY:
1952 /* Don't do anything; this is the system default */
1953 break;
1954 }
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00001955
1956 /* store the number of vectors being used */
1957 adapter->num_vectors = 1;
Bruce Allan4662e822008-08-26 18:37:06 -07001958}
1959
1960/**
1961 * e1000_request_msix - Initialize MSI-X interrupts
1962 *
1963 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1964 * kernel.
1965 **/
1966static int e1000_request_msix(struct e1000_adapter *adapter)
1967{
1968 struct net_device *netdev = adapter->netdev;
1969 int err = 0, vector = 0;
1970
1971 if (strlen(netdev->name) < (IFNAMSIZ - 5))
Bruce Allan79f5e842011-01-19 04:20:59 +00001972 snprintf(adapter->rx_ring->name,
1973 sizeof(adapter->rx_ring->name) - 1,
1974 "%s-rx-0", netdev->name);
Bruce Allan4662e822008-08-26 18:37:06 -07001975 else
1976 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
1977 err = request_irq(adapter->msix_entries[vector].vector,
Joe Perchesa0607fd2009-11-18 23:29:17 -08001978 e1000_intr_msix_rx, 0, adapter->rx_ring->name,
Bruce Allan4662e822008-08-26 18:37:06 -07001979 netdev);
1980 if (err)
Bruce Allan5015e532012-02-08 02:55:56 +00001981 return err;
Bruce Allanc5083cf2011-12-16 00:45:40 +00001982 adapter->rx_ring->itr_register = adapter->hw.hw_addr +
1983 E1000_EITR_82574(vector);
Bruce Allan4662e822008-08-26 18:37:06 -07001984 adapter->rx_ring->itr_val = adapter->itr;
1985 vector++;
1986
1987 if (strlen(netdev->name) < (IFNAMSIZ - 5))
Bruce Allan79f5e842011-01-19 04:20:59 +00001988 snprintf(adapter->tx_ring->name,
1989 sizeof(adapter->tx_ring->name) - 1,
1990 "%s-tx-0", netdev->name);
Bruce Allan4662e822008-08-26 18:37:06 -07001991 else
1992 memcpy(adapter->tx_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_tx, 0, adapter->tx_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->tx_ring->itr_register = adapter->hw.hw_addr +
1999 E1000_EITR_82574(vector);
Bruce Allan4662e822008-08-26 18:37:06 -07002000 adapter->tx_ring->itr_val = adapter->itr;
2001 vector++;
2002
2003 err = request_irq(adapter->msix_entries[vector].vector,
Joe Perchesa0607fd2009-11-18 23:29:17 -08002004 e1000_msix_other, 0, netdev->name, netdev);
Bruce Allan4662e822008-08-26 18:37:06 -07002005 if (err)
Bruce Allan5015e532012-02-08 02:55:56 +00002006 return err;
Bruce Allan4662e822008-08-26 18:37:06 -07002007
2008 e1000_configure_msix(adapter);
Bruce Allan5015e532012-02-08 02:55:56 +00002009
Bruce Allan4662e822008-08-26 18:37:06 -07002010 return 0;
Bruce Allan4662e822008-08-26 18:37:06 -07002011}
2012
Bruce Allanf8d59f72008-08-08 18:36:11 -07002013/**
2014 * e1000_request_irq - initialize interrupts
2015 *
2016 * Attempts to configure interrupts using the best available
2017 * capabilities of the hardware and kernel.
2018 **/
Auke Kokbc7f75f2007-09-17 12:30:59 -07002019static int e1000_request_irq(struct e1000_adapter *adapter)
2020{
2021 struct net_device *netdev = adapter->netdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002022 int err;
2023
Bruce Allan4662e822008-08-26 18:37:06 -07002024 if (adapter->msix_entries) {
2025 err = e1000_request_msix(adapter);
2026 if (!err)
2027 return err;
2028 /* fall back to MSI */
2029 e1000e_reset_interrupt_capability(adapter);
2030 adapter->int_mode = E1000E_INT_MODE_MSI;
2031 e1000e_set_interrupt_capability(adapter);
2032 }
2033 if (adapter->flags & FLAG_MSI_ENABLED) {
Joe Perchesa0607fd2009-11-18 23:29:17 -08002034 err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0,
Bruce Allan4662e822008-08-26 18:37:06 -07002035 netdev->name, netdev);
2036 if (!err)
2037 return err;
2038
2039 /* fall back to legacy interrupt */
2040 e1000e_reset_interrupt_capability(adapter);
2041 adapter->int_mode = E1000E_INT_MODE_LEGACY;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002042 }
2043
Joe Perchesa0607fd2009-11-18 23:29:17 -08002044 err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED,
Bruce Allan4662e822008-08-26 18:37:06 -07002045 netdev->name, netdev);
2046 if (err)
Bruce Allanf8d59f72008-08-08 18:36:11 -07002047 e_err("Unable to allocate interrupt, Error: %d\n", err);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002048
2049 return err;
2050}
2051
2052static void e1000_free_irq(struct e1000_adapter *adapter)
2053{
2054 struct net_device *netdev = adapter->netdev;
2055
Bruce Allan4662e822008-08-26 18:37:06 -07002056 if (adapter->msix_entries) {
2057 int vector = 0;
2058
2059 free_irq(adapter->msix_entries[vector].vector, netdev);
2060 vector++;
2061
2062 free_irq(adapter->msix_entries[vector].vector, netdev);
2063 vector++;
2064
2065 /* Other Causes interrupt vector */
2066 free_irq(adapter->msix_entries[vector].vector, netdev);
2067 return;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002068 }
Bruce Allan4662e822008-08-26 18:37:06 -07002069
2070 free_irq(adapter->pdev->irq, netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002071}
2072
2073/**
2074 * e1000_irq_disable - Mask off interrupt generation on the NIC
2075 **/
2076static void e1000_irq_disable(struct e1000_adapter *adapter)
2077{
2078 struct e1000_hw *hw = &adapter->hw;
2079
Auke Kokbc7f75f2007-09-17 12:30:59 -07002080 ew32(IMC, ~0);
Bruce Allan4662e822008-08-26 18:37:06 -07002081 if (adapter->msix_entries)
2082 ew32(EIAC_82574, 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002083 e1e_flush();
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00002084
2085 if (adapter->msix_entries) {
2086 int i;
2087 for (i = 0; i < adapter->num_vectors; i++)
2088 synchronize_irq(adapter->msix_entries[i].vector);
2089 } else {
2090 synchronize_irq(adapter->pdev->irq);
2091 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07002092}
2093
2094/**
2095 * e1000_irq_enable - Enable default interrupt generation settings
2096 **/
2097static void e1000_irq_enable(struct e1000_adapter *adapter)
2098{
2099 struct e1000_hw *hw = &adapter->hw;
2100
Bruce Allan4662e822008-08-26 18:37:06 -07002101 if (adapter->msix_entries) {
2102 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574);
2103 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC);
2104 } else {
2105 ew32(IMS, IMS_ENABLE_MASK);
2106 }
Jesse Brandeburg74ef9c32008-03-21 11:06:52 -07002107 e1e_flush();
Auke Kokbc7f75f2007-09-17 12:30:59 -07002108}
2109
2110/**
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002111 * e1000e_get_hw_control - get control of the h/w from f/w
Auke Kokbc7f75f2007-09-17 12:30:59 -07002112 * @adapter: address of board private structure
2113 *
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002114 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
Auke Kokbc7f75f2007-09-17 12:30:59 -07002115 * For ASF and Pass Through versions of f/w this means that
2116 * the driver is loaded. For AMT version (only with 82573)
2117 * of the f/w this means that the network i/f is open.
2118 **/
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002119void e1000e_get_hw_control(struct e1000_adapter *adapter)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002120{
2121 struct e1000_hw *hw = &adapter->hw;
2122 u32 ctrl_ext;
2123 u32 swsm;
2124
2125 /* Let firmware know the driver has taken over */
2126 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
2127 swsm = er32(SWSM);
2128 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
2129 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
2130 ctrl_ext = er32(CTRL_EXT);
Bruce Allanad680762008-03-28 09:15:03 -07002131 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002132 }
2133}
2134
2135/**
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002136 * e1000e_release_hw_control - release control of the h/w to f/w
Auke Kokbc7f75f2007-09-17 12:30:59 -07002137 * @adapter: address of board private structure
2138 *
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002139 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
Auke Kokbc7f75f2007-09-17 12:30:59 -07002140 * For ASF and Pass Through versions of f/w this means that the
2141 * driver is no longer loaded. For AMT version (only with 82573) i
2142 * of the f/w this means that the network i/f is closed.
2143 *
2144 **/
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002145void e1000e_release_hw_control(struct e1000_adapter *adapter)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002146{
2147 struct e1000_hw *hw = &adapter->hw;
2148 u32 ctrl_ext;
2149 u32 swsm;
2150
2151 /* Let firmware taken over control of h/w */
2152 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
2153 swsm = er32(SWSM);
2154 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
2155 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
2156 ctrl_ext = er32(CTRL_EXT);
Bruce Allanad680762008-03-28 09:15:03 -07002157 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002158 }
2159}
2160
Auke Kokbc7f75f2007-09-17 12:30:59 -07002161/**
Ben Hutchings49ce9c22012-07-10 10:56:00 +00002162 * e1000_alloc_ring_dma - allocate memory for a ring structure
Auke Kokbc7f75f2007-09-17 12:30:59 -07002163 **/
2164static int e1000_alloc_ring_dma(struct e1000_adapter *adapter,
2165 struct e1000_ring *ring)
2166{
2167 struct pci_dev *pdev = adapter->pdev;
2168
2169 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma,
2170 GFP_KERNEL);
2171 if (!ring->desc)
2172 return -ENOMEM;
2173
2174 return 0;
2175}
2176
2177/**
2178 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
Bruce Allan55aa6982011-12-16 00:45:45 +00002179 * @tx_ring: Tx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07002180 *
2181 * Return 0 on success, negative on failure
2182 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00002183int e1000e_setup_tx_resources(struct e1000_ring *tx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002184{
Bruce Allan55aa6982011-12-16 00:45:45 +00002185 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002186 int err = -ENOMEM, size;
2187
2188 size = sizeof(struct e1000_buffer) * tx_ring->count;
Eric Dumazet89bf67f2010-11-22 00:15:06 +00002189 tx_ring->buffer_info = vzalloc(size);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002190 if (!tx_ring->buffer_info)
2191 goto err;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002192
2193 /* round up to nearest 4K */
2194 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
2195 tx_ring->size = ALIGN(tx_ring->size, 4096);
2196
2197 err = e1000_alloc_ring_dma(adapter, tx_ring);
2198 if (err)
2199 goto err;
2200
2201 tx_ring->next_to_use = 0;
2202 tx_ring->next_to_clean = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002203
2204 return 0;
2205err:
2206 vfree(tx_ring->buffer_info);
Jeff Kirsher44defeb2008-08-04 17:20:41 -07002207 e_err("Unable to allocate memory for the transmit descriptor ring\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07002208 return err;
2209}
2210
2211/**
2212 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
Bruce Allan55aa6982011-12-16 00:45:45 +00002213 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07002214 *
2215 * Returns 0 on success, negative on failure
2216 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00002217int e1000e_setup_rx_resources(struct e1000_ring *rx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002218{
Bruce Allan55aa6982011-12-16 00:45:45 +00002219 struct e1000_adapter *adapter = rx_ring->adapter;
Auke Kok47f44e42007-10-25 13:57:44 -07002220 struct e1000_buffer *buffer_info;
2221 int i, size, desc_len, err = -ENOMEM;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002222
2223 size = sizeof(struct e1000_buffer) * rx_ring->count;
Eric Dumazet89bf67f2010-11-22 00:15:06 +00002224 rx_ring->buffer_info = vzalloc(size);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002225 if (!rx_ring->buffer_info)
2226 goto err;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002227
Auke Kok47f44e42007-10-25 13:57:44 -07002228 for (i = 0; i < rx_ring->count; i++) {
2229 buffer_info = &rx_ring->buffer_info[i];
2230 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS,
2231 sizeof(struct e1000_ps_page),
2232 GFP_KERNEL);
2233 if (!buffer_info->ps_pages)
2234 goto err_pages;
2235 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07002236
2237 desc_len = sizeof(union e1000_rx_desc_packet_split);
2238
2239 /* Round up to nearest 4K */
2240 rx_ring->size = rx_ring->count * desc_len;
2241 rx_ring->size = ALIGN(rx_ring->size, 4096);
2242
2243 err = e1000_alloc_ring_dma(adapter, rx_ring);
2244 if (err)
Auke Kok47f44e42007-10-25 13:57:44 -07002245 goto err_pages;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002246
2247 rx_ring->next_to_clean = 0;
2248 rx_ring->next_to_use = 0;
2249 rx_ring->rx_skb_top = NULL;
2250
2251 return 0;
Auke Kok47f44e42007-10-25 13:57:44 -07002252
2253err_pages:
2254 for (i = 0; i < rx_ring->count; i++) {
2255 buffer_info = &rx_ring->buffer_info[i];
2256 kfree(buffer_info->ps_pages);
2257 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07002258err:
2259 vfree(rx_ring->buffer_info);
Bruce Allane9262442010-11-24 06:02:06 +00002260 e_err("Unable to allocate memory for the receive descriptor ring\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07002261 return err;
2262}
2263
2264/**
2265 * e1000_clean_tx_ring - Free Tx Buffers
Bruce Allan55aa6982011-12-16 00:45:45 +00002266 * @tx_ring: Tx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07002267 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00002268static void e1000_clean_tx_ring(struct e1000_ring *tx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002269{
Bruce Allan55aa6982011-12-16 00:45:45 +00002270 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002271 struct e1000_buffer *buffer_info;
2272 unsigned long size;
2273 unsigned int i;
2274
2275 for (i = 0; i < tx_ring->count; i++) {
2276 buffer_info = &tx_ring->buffer_info[i];
Bruce Allan55aa6982011-12-16 00:45:45 +00002277 e1000_put_txbuf(tx_ring, buffer_info);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002278 }
2279
Tom Herbert3f0cfa32011-11-28 16:33:16 +00002280 netdev_reset_queue(adapter->netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002281 size = sizeof(struct e1000_buffer) * tx_ring->count;
2282 memset(tx_ring->buffer_info, 0, size);
2283
2284 memset(tx_ring->desc, 0, tx_ring->size);
2285
2286 tx_ring->next_to_use = 0;
2287 tx_ring->next_to_clean = 0;
2288
Bruce Allanc5083cf2011-12-16 00:45:40 +00002289 writel(0, tx_ring->head);
Bruce Allanbdc125f2012-03-20 03:47:52 +00002290 if (tx_ring->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
2291 e1000e_update_tdt_wa(tx_ring, 0);
2292 else
2293 writel(0, tx_ring->tail);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002294}
2295
2296/**
2297 * e1000e_free_tx_resources - Free Tx Resources per Queue
Bruce Allan55aa6982011-12-16 00:45:45 +00002298 * @tx_ring: Tx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07002299 *
2300 * Free all transmit software resources
2301 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00002302void e1000e_free_tx_resources(struct e1000_ring *tx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002303{
Bruce Allan55aa6982011-12-16 00:45:45 +00002304 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002305 struct pci_dev *pdev = adapter->pdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002306
Bruce Allan55aa6982011-12-16 00:45:45 +00002307 e1000_clean_tx_ring(tx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002308
2309 vfree(tx_ring->buffer_info);
2310 tx_ring->buffer_info = NULL;
2311
2312 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
2313 tx_ring->dma);
2314 tx_ring->desc = NULL;
2315}
2316
2317/**
2318 * e1000e_free_rx_resources - Free Rx Resources
Bruce Allan55aa6982011-12-16 00:45:45 +00002319 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07002320 *
2321 * Free all receive software resources
2322 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00002323void e1000e_free_rx_resources(struct e1000_ring *rx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002324{
Bruce Allan55aa6982011-12-16 00:45:45 +00002325 struct e1000_adapter *adapter = rx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002326 struct pci_dev *pdev = adapter->pdev;
Auke Kok47f44e42007-10-25 13:57:44 -07002327 int i;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002328
Bruce Allan55aa6982011-12-16 00:45:45 +00002329 e1000_clean_rx_ring(rx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002330
Bruce Allanb1cdfea2010-12-11 05:53:47 +00002331 for (i = 0; i < rx_ring->count; i++)
Auke Kok47f44e42007-10-25 13:57:44 -07002332 kfree(rx_ring->buffer_info[i].ps_pages);
Auke Kok47f44e42007-10-25 13:57:44 -07002333
Auke Kokbc7f75f2007-09-17 12:30:59 -07002334 vfree(rx_ring->buffer_info);
2335 rx_ring->buffer_info = NULL;
2336
Auke Kokbc7f75f2007-09-17 12:30:59 -07002337 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
2338 rx_ring->dma);
2339 rx_ring->desc = NULL;
2340}
2341
2342/**
2343 * e1000_update_itr - update the dynamic ITR value based on statistics
Auke Kok489815c2008-02-21 15:11:07 -08002344 * @adapter: pointer to adapter
2345 * @itr_setting: current adapter->itr
2346 * @packets: the number of packets during this measurement interval
2347 * @bytes: the number of bytes during this measurement interval
2348 *
Auke Kokbc7f75f2007-09-17 12:30:59 -07002349 * Stores a new ITR value based on packets and byte
2350 * counts during the last interrupt. The advantage of per interrupt
2351 * computation is faster updates and more accurate ITR for the current
2352 * traffic pattern. Constants in this function were computed
2353 * based on theoretical maximum wire speed and thresholds were set based
2354 * on testing data as well as attempting to minimize response time
Bruce Allan4662e822008-08-26 18:37:06 -07002355 * while increasing bulk throughput. This functionality is controlled
2356 * by the InterruptThrottleRate module parameter.
Auke Kokbc7f75f2007-09-17 12:30:59 -07002357 **/
2358static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
2359 u16 itr_setting, int packets,
2360 int bytes)
2361{
2362 unsigned int retval = itr_setting;
2363
2364 if (packets == 0)
Bruce Allan5015e532012-02-08 02:55:56 +00002365 return itr_setting;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002366
2367 switch (itr_setting) {
2368 case lowest_latency:
2369 /* handle TSO and jumbo frames */
2370 if (bytes/packets > 8000)
2371 retval = bulk_latency;
Bruce Allanb1cdfea2010-12-11 05:53:47 +00002372 else if ((packets < 5) && (bytes > 512))
Auke Kokbc7f75f2007-09-17 12:30:59 -07002373 retval = low_latency;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002374 break;
2375 case low_latency: /* 50 usec aka 20000 ints/s */
2376 if (bytes > 10000) {
2377 /* this if handles the TSO accounting */
Bruce Allanb1cdfea2010-12-11 05:53:47 +00002378 if (bytes/packets > 8000)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002379 retval = bulk_latency;
Bruce Allanb1cdfea2010-12-11 05:53:47 +00002380 else if ((packets < 10) || ((bytes/packets) > 1200))
Auke Kokbc7f75f2007-09-17 12:30:59 -07002381 retval = bulk_latency;
Bruce Allanb1cdfea2010-12-11 05:53:47 +00002382 else if ((packets > 35))
Auke Kokbc7f75f2007-09-17 12:30:59 -07002383 retval = lowest_latency;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002384 } else if (bytes/packets > 2000) {
2385 retval = bulk_latency;
2386 } else if (packets <= 2 && bytes < 512) {
2387 retval = lowest_latency;
2388 }
2389 break;
2390 case bulk_latency: /* 250 usec aka 4000 ints/s */
2391 if (bytes > 25000) {
Bruce Allanb1cdfea2010-12-11 05:53:47 +00002392 if (packets > 35)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002393 retval = low_latency;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002394 } else if (bytes < 6000) {
2395 retval = low_latency;
2396 }
2397 break;
2398 }
2399
Auke Kokbc7f75f2007-09-17 12:30:59 -07002400 return retval;
2401}
2402
2403static void e1000_set_itr(struct e1000_adapter *adapter)
2404{
2405 struct e1000_hw *hw = &adapter->hw;
2406 u16 current_itr;
2407 u32 new_itr = adapter->itr;
2408
2409 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2410 if (adapter->link_speed != SPEED_1000) {
2411 current_itr = 0;
2412 new_itr = 4000;
2413 goto set_itr_now;
2414 }
2415
Bruce Allan828bac82010-09-29 21:39:37 +00002416 if (adapter->flags2 & FLAG2_DISABLE_AIM) {
2417 new_itr = 0;
2418 goto set_itr_now;
2419 }
2420
Auke Kokbc7f75f2007-09-17 12:30:59 -07002421 adapter->tx_itr = e1000_update_itr(adapter,
2422 adapter->tx_itr,
2423 adapter->total_tx_packets,
2424 adapter->total_tx_bytes);
2425 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2426 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
2427 adapter->tx_itr = low_latency;
2428
2429 adapter->rx_itr = e1000_update_itr(adapter,
2430 adapter->rx_itr,
2431 adapter->total_rx_packets,
2432 adapter->total_rx_bytes);
2433 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2434 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
2435 adapter->rx_itr = low_latency;
2436
2437 current_itr = max(adapter->rx_itr, adapter->tx_itr);
2438
2439 switch (current_itr) {
2440 /* counts and packets in update_itr are dependent on these numbers */
2441 case lowest_latency:
2442 new_itr = 70000;
2443 break;
2444 case low_latency:
2445 new_itr = 20000; /* aka hwitr = ~200 */
2446 break;
2447 case bulk_latency:
2448 new_itr = 4000;
2449 break;
2450 default:
2451 break;
2452 }
2453
2454set_itr_now:
2455 if (new_itr != adapter->itr) {
Bruce Allanad680762008-03-28 09:15:03 -07002456 /*
2457 * this attempts to bias the interrupt rate towards Bulk
Auke Kokbc7f75f2007-09-17 12:30:59 -07002458 * by adding intermediate steps when interrupt rate is
Bruce Allanad680762008-03-28 09:15:03 -07002459 * increasing
2460 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002461 new_itr = new_itr > adapter->itr ?
2462 min(adapter->itr + (new_itr >> 2), new_itr) :
2463 new_itr;
2464 adapter->itr = new_itr;
Bruce Allan4662e822008-08-26 18:37:06 -07002465 adapter->rx_ring->itr_val = new_itr;
2466 if (adapter->msix_entries)
2467 adapter->rx_ring->set_itr = 1;
2468 else
Bruce Allan828bac82010-09-29 21:39:37 +00002469 if (new_itr)
2470 ew32(ITR, 1000000000 / (new_itr * 256));
2471 else
2472 ew32(ITR, 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002473 }
2474}
2475
2476/**
Matthew Vick22a4cca2012-07-12 00:02:42 +00002477 * e1000e_write_itr - write the ITR value to the appropriate registers
2478 * @adapter: address of board private structure
2479 * @itr: new ITR value to program
2480 *
2481 * e1000e_write_itr determines if the adapter is in MSI-X mode
2482 * and, if so, writes the EITR registers with the ITR value.
2483 * Otherwise, it writes the ITR value into the ITR register.
2484 **/
2485void e1000e_write_itr(struct e1000_adapter *adapter, u32 itr)
2486{
2487 struct e1000_hw *hw = &adapter->hw;
2488 u32 new_itr = itr ? 1000000000 / (itr * 256) : 0;
2489
2490 if (adapter->msix_entries) {
2491 int vector;
2492
2493 for (vector = 0; vector < adapter->num_vectors; vector++)
2494 writel(new_itr, hw->hw_addr + E1000_EITR_82574(vector));
2495 } else {
2496 ew32(ITR, new_itr);
2497 }
2498}
2499
2500/**
Bruce Allan4662e822008-08-26 18:37:06 -07002501 * e1000_alloc_queues - Allocate memory for all rings
2502 * @adapter: board private structure to initialize
2503 **/
2504static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter)
2505{
Bruce Allan55aa6982011-12-16 00:45:45 +00002506 int size = sizeof(struct e1000_ring);
2507
2508 adapter->tx_ring = kzalloc(size, GFP_KERNEL);
Bruce Allan4662e822008-08-26 18:37:06 -07002509 if (!adapter->tx_ring)
2510 goto err;
Bruce Allan55aa6982011-12-16 00:45:45 +00002511 adapter->tx_ring->count = adapter->tx_ring_count;
2512 adapter->tx_ring->adapter = adapter;
Bruce Allan4662e822008-08-26 18:37:06 -07002513
Bruce Allan55aa6982011-12-16 00:45:45 +00002514 adapter->rx_ring = kzalloc(size, GFP_KERNEL);
Bruce Allan4662e822008-08-26 18:37:06 -07002515 if (!adapter->rx_ring)
2516 goto err;
Bruce Allan55aa6982011-12-16 00:45:45 +00002517 adapter->rx_ring->count = adapter->rx_ring_count;
2518 adapter->rx_ring->adapter = adapter;
Bruce Allan4662e822008-08-26 18:37:06 -07002519
2520 return 0;
2521err:
2522 e_err("Unable to allocate memory for queues\n");
2523 kfree(adapter->rx_ring);
2524 kfree(adapter->tx_ring);
2525 return -ENOMEM;
2526}
2527
2528/**
Bruce Allanc58c8a72012-03-20 03:48:19 +00002529 * e1000e_poll - NAPI Rx polling callback
Bruce Allanad680762008-03-28 09:15:03 -07002530 * @napi: struct associated with this polling callback
Bruce Allanc58c8a72012-03-20 03:48:19 +00002531 * @weight: number of packets driver is allowed to process this poll
Auke Kokbc7f75f2007-09-17 12:30:59 -07002532 **/
Bruce Allanc58c8a72012-03-20 03:48:19 +00002533static int e1000e_poll(struct napi_struct *napi, int weight)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002534{
Bruce Allanc58c8a72012-03-20 03:48:19 +00002535 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter,
2536 napi);
Bruce Allan4662e822008-08-26 18:37:06 -07002537 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002538 struct net_device *poll_dev = adapter->netdev;
Andy Gospodarek679e8a02009-06-18 11:57:37 +00002539 int tx_cleaned = 1, work_done = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002540
Wang Chen4cf16532008-11-12 23:38:14 -08002541 adapter = netdev_priv(poll_dev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002542
Bruce Allanc58c8a72012-03-20 03:48:19 +00002543 if (!adapter->msix_entries ||
2544 (adapter->rx_ring->ims_val & adapter->tx_ring->ims_val))
2545 tx_cleaned = e1000_clean_tx_irq(adapter->tx_ring);
Bruce Allan4662e822008-08-26 18:37:06 -07002546
Bruce Allanc58c8a72012-03-20 03:48:19 +00002547 adapter->clean_rx(adapter->rx_ring, &work_done, weight);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002548
Alexander Duyck12d04a32009-03-25 22:05:03 +00002549 if (!tx_cleaned)
Bruce Allanc58c8a72012-03-20 03:48:19 +00002550 work_done = weight;
David S. Millerd2c7ddd2008-01-15 22:43:24 -08002551
Bruce Allanc58c8a72012-03-20 03:48:19 +00002552 /* If weight not fully consumed, exit the polling mode */
2553 if (work_done < weight) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07002554 if (adapter->itr_setting & 3)
2555 e1000_set_itr(adapter);
Ben Hutchings288379f2009-01-19 16:43:59 -08002556 napi_complete(napi);
Jesse Brandeburga3c69fe2009-03-25 22:05:41 +00002557 if (!test_bit(__E1000_DOWN, &adapter->state)) {
2558 if (adapter->msix_entries)
2559 ew32(IMS, adapter->rx_ring->ims_val);
2560 else
2561 e1000_irq_enable(adapter);
2562 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07002563 }
2564
2565 return work_done;
2566}
2567
Jiri Pirko8e586132011-12-08 19:52:37 -05002568static int e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002569{
2570 struct e1000_adapter *adapter = netdev_priv(netdev);
2571 struct e1000_hw *hw = &adapter->hw;
2572 u32 vfta, index;
2573
2574 /* don't update vlan cookie if already programmed */
2575 if ((adapter->hw.mng_cookie.status &
2576 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2577 (vid == adapter->mng_vlan_id))
Jiri Pirko8e586132011-12-08 19:52:37 -05002578 return 0;
Bruce Allancaaddaf2009-12-01 15:46:43 +00002579
Auke Kokbc7f75f2007-09-17 12:30:59 -07002580 /* add VID to filter table */
Bruce Allancaaddaf2009-12-01 15:46:43 +00002581 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2582 index = (vid >> 5) & 0x7F;
2583 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2584 vfta |= (1 << (vid & 0x1F));
2585 hw->mac.ops.write_vfta(hw, index, vfta);
2586 }
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002587
2588 set_bit(vid, adapter->active_vlans);
Jiri Pirko8e586132011-12-08 19:52:37 -05002589
2590 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002591}
2592
Jiri Pirko8e586132011-12-08 19:52:37 -05002593static int e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002594{
2595 struct e1000_adapter *adapter = netdev_priv(netdev);
2596 struct e1000_hw *hw = &adapter->hw;
2597 u32 vfta, index;
2598
Auke Kokbc7f75f2007-09-17 12:30:59 -07002599 if ((adapter->hw.mng_cookie.status &
2600 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2601 (vid == adapter->mng_vlan_id)) {
2602 /* release control to f/w */
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002603 e1000e_release_hw_control(adapter);
Jiri Pirko8e586132011-12-08 19:52:37 -05002604 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002605 }
2606
2607 /* remove VID from filter table */
Bruce Allancaaddaf2009-12-01 15:46:43 +00002608 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2609 index = (vid >> 5) & 0x7F;
2610 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2611 vfta &= ~(1 << (vid & 0x1F));
2612 hw->mac.ops.write_vfta(hw, index, vfta);
2613 }
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002614
2615 clear_bit(vid, adapter->active_vlans);
Jiri Pirko8e586132011-12-08 19:52:37 -05002616
2617 return 0;
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002618}
2619
2620/**
2621 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
2622 * @adapter: board private structure to initialize
2623 **/
2624static void e1000e_vlan_filter_disable(struct e1000_adapter *adapter)
2625{
2626 struct net_device *netdev = adapter->netdev;
2627 struct e1000_hw *hw = &adapter->hw;
2628 u32 rctl;
2629
2630 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2631 /* disable VLAN receive filtering */
2632 rctl = er32(RCTL);
2633 rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN);
2634 ew32(RCTL, rctl);
2635
2636 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) {
2637 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
2638 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2639 }
2640 }
2641}
2642
2643/**
2644 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
2645 * @adapter: board private structure to initialize
2646 **/
2647static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter)
2648{
2649 struct e1000_hw *hw = &adapter->hw;
2650 u32 rctl;
2651
2652 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2653 /* enable VLAN receive filtering */
2654 rctl = er32(RCTL);
2655 rctl |= E1000_RCTL_VFE;
2656 rctl &= ~E1000_RCTL_CFIEN;
2657 ew32(RCTL, rctl);
2658 }
2659}
2660
2661/**
2662 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping
2663 * @adapter: board private structure to initialize
2664 **/
2665static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter)
2666{
2667 struct e1000_hw *hw = &adapter->hw;
2668 u32 ctrl;
2669
2670 /* disable VLAN tag insert/strip */
2671 ctrl = er32(CTRL);
2672 ctrl &= ~E1000_CTRL_VME;
2673 ew32(CTRL, ctrl);
2674}
2675
2676/**
2677 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
2678 * @adapter: board private structure to initialize
2679 **/
2680static void e1000e_vlan_strip_enable(struct e1000_adapter *adapter)
2681{
2682 struct e1000_hw *hw = &adapter->hw;
2683 u32 ctrl;
2684
2685 /* enable VLAN tag insert/strip */
2686 ctrl = er32(CTRL);
2687 ctrl |= E1000_CTRL_VME;
2688 ew32(CTRL, ctrl);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002689}
2690
2691static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
2692{
2693 struct net_device *netdev = adapter->netdev;
2694 u16 vid = adapter->hw.mng_cookie.vlan_id;
2695 u16 old_vid = adapter->mng_vlan_id;
2696
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002697 if (adapter->hw.mng_cookie.status &
2698 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
2699 e1000_vlan_rx_add_vid(netdev, vid);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002700 adapter->mng_vlan_id = vid;
2701 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07002702
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002703 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && (vid != old_vid))
2704 e1000_vlan_rx_kill_vid(netdev, old_vid);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002705}
2706
2707static void e1000_restore_vlan(struct e1000_adapter *adapter)
2708{
2709 u16 vid;
2710
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002711 e1000_vlan_rx_add_vid(adapter->netdev, 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002712
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002713 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002714 e1000_vlan_rx_add_vid(adapter->netdev, vid);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002715}
2716
Bruce Allancd791612010-05-10 14:59:51 +00002717static void e1000_init_manageability_pt(struct e1000_adapter *adapter)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002718{
2719 struct e1000_hw *hw = &adapter->hw;
Bruce Allancd791612010-05-10 14:59:51 +00002720 u32 manc, manc2h, mdef, i, j;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002721
2722 if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
2723 return;
2724
2725 manc = er32(MANC);
2726
Bruce Allanad680762008-03-28 09:15:03 -07002727 /*
2728 * enable receiving management packets to the host. this will probably
Auke Kokbc7f75f2007-09-17 12:30:59 -07002729 * generate destination unreachable messages from the host OS, but
Bruce Allanad680762008-03-28 09:15:03 -07002730 * the packets will be handled on SMBUS
2731 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002732 manc |= E1000_MANC_EN_MNG2HOST;
2733 manc2h = er32(MANC2H);
Bruce Allancd791612010-05-10 14:59:51 +00002734
2735 switch (hw->mac.type) {
2736 default:
2737 manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664);
2738 break;
2739 case e1000_82574:
2740 case e1000_82583:
2741 /*
2742 * Check if IPMI pass-through decision filter already exists;
2743 * if so, enable it.
2744 */
2745 for (i = 0, j = 0; i < 8; i++) {
2746 mdef = er32(MDEF(i));
2747
2748 /* Ignore filters with anything other than IPMI ports */
Dan Carpenter3b21b502010-06-02 13:43:15 +00002749 if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
Bruce Allancd791612010-05-10 14:59:51 +00002750 continue;
2751
2752 /* Enable this decision filter in MANC2H */
2753 if (mdef)
2754 manc2h |= (1 << i);
2755
2756 j |= mdef;
2757 }
2758
2759 if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
2760 break;
2761
2762 /* Create new decision filter in an empty filter */
2763 for (i = 0, j = 0; i < 8; i++)
2764 if (er32(MDEF(i)) == 0) {
2765 ew32(MDEF(i), (E1000_MDEF_PORT_623 |
2766 E1000_MDEF_PORT_664));
2767 manc2h |= (1 << 1);
2768 j++;
2769 break;
2770 }
2771
2772 if (!j)
2773 e_warn("Unable to create IPMI pass-through filter\n");
2774 break;
2775 }
2776
Auke Kokbc7f75f2007-09-17 12:30:59 -07002777 ew32(MANC2H, manc2h);
2778 ew32(MANC, manc);
2779}
2780
2781/**
Bruce Allanaf667a22010-12-31 06:10:01 +00002782 * e1000_configure_tx - Configure Transmit Unit after Reset
Auke Kokbc7f75f2007-09-17 12:30:59 -07002783 * @adapter: board private structure
2784 *
2785 * Configure the Tx unit of the MAC after a reset.
2786 **/
2787static void e1000_configure_tx(struct e1000_adapter *adapter)
2788{
2789 struct e1000_hw *hw = &adapter->hw;
2790 struct e1000_ring *tx_ring = adapter->tx_ring;
2791 u64 tdba;
Bruce Allanc550b122011-12-16 00:46:17 +00002792 u32 tdlen, tarc;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002793
2794 /* Setup the HW Tx Head and Tail descriptor pointers */
2795 tdba = tx_ring->dma;
2796 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc);
Bruce Allan1e360522012-03-20 03:48:13 +00002797 ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32)));
2798 ew32(TDBAH(0), (tdba >> 32));
2799 ew32(TDLEN(0), tdlen);
2800 ew32(TDH(0), 0);
2801 ew32(TDT(0), 0);
2802 tx_ring->head = adapter->hw.hw_addr + E1000_TDH(0);
2803 tx_ring->tail = adapter->hw.hw_addr + E1000_TDT(0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002804
Auke Kokbc7f75f2007-09-17 12:30:59 -07002805 /* Set the Tx Interrupt Delay register */
2806 ew32(TIDV, adapter->tx_int_delay);
Bruce Allanad680762008-03-28 09:15:03 -07002807 /* Tx irq moderation */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002808 ew32(TADV, adapter->tx_abs_int_delay);
2809
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00002810 if (adapter->flags2 & FLAG2_DMA_BURST) {
2811 u32 txdctl = er32(TXDCTL(0));
2812 txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH |
2813 E1000_TXDCTL_WTHRESH);
2814 /*
2815 * set up some performance related parameters to encourage the
2816 * hardware to use the bus more efficiently in bursts, depends
2817 * on the tx_int_delay to be enabled,
2818 * wthresh = 5 ==> burst write a cacheline (64 bytes) at a time
2819 * hthresh = 1 ==> prefetch when one or more available
2820 * pthresh = 0x1f ==> prefetch if internal cache 31 or less
2821 * BEWARE: this seems to work but should be considered first if
Bruce Allanaf667a22010-12-31 06:10:01 +00002822 * there are Tx hangs or other Tx related bugs
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00002823 */
2824 txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE;
2825 ew32(TXDCTL(0), txdctl);
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00002826 }
Bruce Allan56032be2011-12-16 00:46:01 +00002827 /* erratum work around: set txdctl the same for both queues */
2828 ew32(TXDCTL(1), er32(TXDCTL(0)));
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00002829
Auke Kokbc7f75f2007-09-17 12:30:59 -07002830 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) {
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002831 tarc = er32(TARC(0));
Bruce Allanad680762008-03-28 09:15:03 -07002832 /*
2833 * set the speed mode bit, we'll clear it if we're not at
2834 * gigabit link later
2835 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002836#define SPEED_MODE_BIT (1 << 21)
2837 tarc |= SPEED_MODE_BIT;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002838 ew32(TARC(0), tarc);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002839 }
2840
2841 /* errata: program both queues to unweighted RR */
2842 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) {
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002843 tarc = er32(TARC(0));
Auke Kokbc7f75f2007-09-17 12:30:59 -07002844 tarc |= 1;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002845 ew32(TARC(0), tarc);
2846 tarc = er32(TARC(1));
Auke Kokbc7f75f2007-09-17 12:30:59 -07002847 tarc |= 1;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002848 ew32(TARC(1), tarc);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002849 }
2850
Auke Kokbc7f75f2007-09-17 12:30:59 -07002851 /* Setup Transmit Descriptor Settings for eop descriptor */
2852 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
2853
2854 /* only set IDE if we are delaying interrupts using the timers */
2855 if (adapter->tx_int_delay)
2856 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
2857
2858 /* enable Report Status bit */
2859 adapter->txd_cmd |= E1000_TXD_CMD_RS;
2860
Bruce Allan57cde762012-02-22 09:02:58 +00002861 hw->mac.ops.config_collision_dist(hw);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002862}
2863
2864/**
2865 * e1000_setup_rctl - configure the receive control registers
2866 * @adapter: Board private structure
2867 **/
2868#define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2869 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2870static void e1000_setup_rctl(struct e1000_adapter *adapter)
2871{
2872 struct e1000_hw *hw = &adapter->hw;
2873 u32 rctl, rfctl;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002874 u32 pages = 0;
2875
Bruce Allan2fbe4522012-04-19 03:21:47 +00002876 /* Workaround Si errata on PCHx - configure jumbo frame flow */
2877 if (hw->mac.type >= e1000_pch2lan) {
Bruce Allana1ce6472010-09-22 17:16:40 +00002878 s32 ret_val;
2879
2880 if (adapter->netdev->mtu > ETH_DATA_LEN)
2881 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true);
2882 else
2883 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false);
Bruce Allandd93f952011-01-06 14:29:48 +00002884
2885 if (ret_val)
2886 e_dbg("failed to enable jumbo frame workaround mode\n");
Bruce Allana1ce6472010-09-22 17:16:40 +00002887 }
2888
Auke Kokbc7f75f2007-09-17 12:30:59 -07002889 /* Program MC offset vector base */
2890 rctl = er32(RCTL);
2891 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2892 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
2893 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
2894 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
2895
2896 /* Do not Store bad packets */
2897 rctl &= ~E1000_RCTL_SBP;
2898
2899 /* Enable Long Packet receive */
2900 if (adapter->netdev->mtu <= ETH_DATA_LEN)
2901 rctl &= ~E1000_RCTL_LPE;
2902 else
2903 rctl |= E1000_RCTL_LPE;
2904
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +00002905 /* Some systems expect that the CRC is included in SMBUS traffic. The
2906 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2907 * host memory when this is enabled
2908 */
2909 if (adapter->flags2 & FLAG2_CRC_STRIPPING)
2910 rctl |= E1000_RCTL_SECRC;
Auke Kok5918bd82008-02-12 15:20:24 -08002911
Bruce Allana4f58f52009-06-02 11:29:18 +00002912 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
2913 if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) {
2914 u16 phy_data;
2915
2916 e1e_rphy(hw, PHY_REG(770, 26), &phy_data);
2917 phy_data &= 0xfff8;
2918 phy_data |= (1 << 2);
2919 e1e_wphy(hw, PHY_REG(770, 26), phy_data);
2920
2921 e1e_rphy(hw, 22, &phy_data);
2922 phy_data &= 0x0fff;
2923 phy_data |= (1 << 14);
2924 e1e_wphy(hw, 0x10, 0x2823);
2925 e1e_wphy(hw, 0x11, 0x0003);
2926 e1e_wphy(hw, 22, phy_data);
2927 }
2928
Auke Kokbc7f75f2007-09-17 12:30:59 -07002929 /* Setup buffer sizes */
2930 rctl &= ~E1000_RCTL_SZ_4096;
2931 rctl |= E1000_RCTL_BSEX;
2932 switch (adapter->rx_buffer_len) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07002933 case 2048:
2934 default:
2935 rctl |= E1000_RCTL_SZ_2048;
2936 rctl &= ~E1000_RCTL_BSEX;
2937 break;
2938 case 4096:
2939 rctl |= E1000_RCTL_SZ_4096;
2940 break;
2941 case 8192:
2942 rctl |= E1000_RCTL_SZ_8192;
2943 break;
2944 case 16384:
2945 rctl |= E1000_RCTL_SZ_16384;
2946 break;
2947 }
2948
Bruce Allan5f450212011-07-22 06:21:46 +00002949 /* Enable Extended Status in all Receive Descriptors */
2950 rfctl = er32(RFCTL);
2951 rfctl |= E1000_RFCTL_EXTEN;
Matthew Vickf6bd5572012-04-25 08:01:05 +00002952 ew32(RFCTL, rfctl);
Bruce Allan5f450212011-07-22 06:21:46 +00002953
Auke Kokbc7f75f2007-09-17 12:30:59 -07002954 /*
2955 * 82571 and greater support packet-split where the protocol
2956 * header is placed in skb->data and the packet data is
2957 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2958 * In the case of a non-split, skb->data is linearly filled,
2959 * followed by the page buffers. Therefore, skb->data is
2960 * sized to hold the largest protocol header.
2961 *
2962 * allocations using alloc_page take too long for regular MTU
2963 * so only enable packet split for jumbo frames
2964 *
2965 * Using pages when the page size is greater than 16k wastes
2966 * a lot of memory, since we allocate 3 pages at all times
2967 * per packet.
2968 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002969 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
Bruce Allan79d4e902011-12-16 00:46:27 +00002970 if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE))
Auke Kokbc7f75f2007-09-17 12:30:59 -07002971 adapter->rx_ps_pages = pages;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07002972 else
2973 adapter->rx_ps_pages = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002974
2975 if (adapter->rx_ps_pages) {
Bruce Allan90da0662011-01-06 07:02:53 +00002976 u32 psrctl = 0;
2977
Auke Kok140a7482007-10-25 13:57:58 -07002978 /* Enable Packet split descriptors */
2979 rctl |= E1000_RCTL_DTYP_PS;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002980
2981 psrctl |= adapter->rx_ps_bsize0 >>
2982 E1000_PSRCTL_BSIZE0_SHIFT;
2983
2984 switch (adapter->rx_ps_pages) {
2985 case 3:
2986 psrctl |= PAGE_SIZE <<
2987 E1000_PSRCTL_BSIZE3_SHIFT;
2988 case 2:
2989 psrctl |= PAGE_SIZE <<
2990 E1000_PSRCTL_BSIZE2_SHIFT;
2991 case 1:
2992 psrctl |= PAGE_SIZE >>
2993 E1000_PSRCTL_BSIZE1_SHIFT;
2994 break;
2995 }
2996
2997 ew32(PSRCTL, psrctl);
2998 }
2999
Ben Greearcf955e62012-02-11 15:39:51 +00003000 /* This is useful for sniffing bad packets. */
3001 if (adapter->netdev->features & NETIF_F_RXALL) {
3002 /* UPE and MPE will be handled by normal PROMISC logic
3003 * in e1000e_set_rx_mode */
3004 rctl |= (E1000_RCTL_SBP | /* Receive bad packets */
3005 E1000_RCTL_BAM | /* RX All Bcast Pkts */
3006 E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */
3007
3008 rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */
3009 E1000_RCTL_DPF | /* Allow filtered pause */
3010 E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */
3011 /* Do not mess with E1000_CTRL_VME, it affects transmit as well,
3012 * and that breaks VLANs.
3013 */
3014 }
3015
Auke Kokbc7f75f2007-09-17 12:30:59 -07003016 ew32(RCTL, rctl);
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003017 /* just started the receive unit, no need to restart */
3018 adapter->flags &= ~FLAG_RX_RESTART_NOW;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003019}
3020
3021/**
3022 * e1000_configure_rx - Configure Receive Unit after Reset
3023 * @adapter: board private structure
3024 *
3025 * Configure the Rx unit of the MAC after a reset.
3026 **/
3027static void e1000_configure_rx(struct e1000_adapter *adapter)
3028{
3029 struct e1000_hw *hw = &adapter->hw;
3030 struct e1000_ring *rx_ring = adapter->rx_ring;
3031 u64 rdba;
3032 u32 rdlen, rctl, rxcsum, ctrl_ext;
3033
3034 if (adapter->rx_ps_pages) {
3035 /* this is a 32 byte descriptor */
3036 rdlen = rx_ring->count *
Bruce Allanaf667a22010-12-31 06:10:01 +00003037 sizeof(union e1000_rx_desc_packet_split);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003038 adapter->clean_rx = e1000_clean_rx_irq_ps;
3039 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07003040 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) {
Bruce Allan5f450212011-07-22 06:21:46 +00003041 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07003042 adapter->clean_rx = e1000_clean_jumbo_rx_irq;
3043 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003044 } else {
Bruce Allan5f450212011-07-22 06:21:46 +00003045 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003046 adapter->clean_rx = e1000_clean_rx_irq;
3047 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
3048 }
3049
3050 /* disable receives while setting up the descriptors */
3051 rctl = er32(RCTL);
David S. Miller823dcd22011-08-20 10:39:12 -07003052 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
3053 ew32(RCTL, rctl & ~E1000_RCTL_EN);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003054 e1e_flush();
Bruce Allan1bba4382011-03-19 00:27:20 +00003055 usleep_range(10000, 20000);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003056
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00003057 if (adapter->flags2 & FLAG2_DMA_BURST) {
3058 /*
3059 * set the writeback threshold (only takes effect if the RDTR
3060 * is set). set GRAN=1 and write back up to 0x4 worth, and
Bruce Allanaf667a22010-12-31 06:10:01 +00003061 * enable prefetching of 0x20 Rx descriptors
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00003062 * granularity = 01
3063 * wthresh = 04,
3064 * hthresh = 04,
3065 * pthresh = 0x20
3066 */
3067 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE);
3068 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE);
3069
3070 /*
3071 * override the delay timers for enabling bursting, only if
3072 * the value was not set by the user via module options
3073 */
3074 if (adapter->rx_int_delay == DEFAULT_RDTR)
3075 adapter->rx_int_delay = BURST_RDTR;
3076 if (adapter->rx_abs_int_delay == DEFAULT_RADV)
3077 adapter->rx_abs_int_delay = BURST_RADV;
3078 }
3079
Auke Kokbc7f75f2007-09-17 12:30:59 -07003080 /* set the Receive Delay Timer Register */
3081 ew32(RDTR, adapter->rx_int_delay);
3082
3083 /* irq moderation */
3084 ew32(RADV, adapter->rx_abs_int_delay);
Bruce Allan828bac82010-09-29 21:39:37 +00003085 if ((adapter->itr_setting != 0) && (adapter->itr != 0))
Matthew Vick22a4cca2012-07-12 00:02:42 +00003086 e1000e_write_itr(adapter, adapter->itr);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003087
3088 ctrl_ext = er32(CTRL_EXT);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003089 /* Auto-Mask interrupts upon ICR access */
3090 ctrl_ext |= E1000_CTRL_EXT_IAME;
3091 ew32(IAM, 0xffffffff);
3092 ew32(CTRL_EXT, ctrl_ext);
3093 e1e_flush();
3094
Bruce Allanad680762008-03-28 09:15:03 -07003095 /*
3096 * Setup the HW Rx Head and Tail Descriptor Pointers and
3097 * the Base and Length of the Rx Descriptor Ring
3098 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003099 rdba = rx_ring->dma;
Bruce Allan1e360522012-03-20 03:48:13 +00003100 ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32)));
3101 ew32(RDBAH(0), (rdba >> 32));
3102 ew32(RDLEN(0), rdlen);
3103 ew32(RDH(0), 0);
3104 ew32(RDT(0), 0);
3105 rx_ring->head = adapter->hw.hw_addr + E1000_RDH(0);
3106 rx_ring->tail = adapter->hw.hw_addr + E1000_RDT(0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003107
3108 /* Enable Receive Checksum Offload for TCP and UDP */
3109 rxcsum = er32(RXCSUM);
Bruce Allan2e1706f2012-06-30 20:02:42 +00003110 if (adapter->netdev->features & NETIF_F_RXCSUM)
Auke Kokbc7f75f2007-09-17 12:30:59 -07003111 rxcsum |= E1000_RXCSUM_TUOFL;
Bruce Allan2e1706f2012-06-30 20:02:42 +00003112 else
Auke Kokbc7f75f2007-09-17 12:30:59 -07003113 rxcsum &= ~E1000_RXCSUM_TUOFL;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003114 ew32(RXCSUM, rxcsum);
3115
Bruce Allan79d4e902011-12-16 00:46:27 +00003116 if (adapter->hw.mac.type == e1000_pch2lan) {
3117 /*
3118 * With jumbo frames, excessive C-state transition
3119 * latencies result in dropped transactions.
3120 */
Bruce Allan53ec5492009-11-20 23:27:40 +00003121 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3122 u32 rxdctl = er32(RXDCTL(0));
3123 ew32(RXDCTL(0), rxdctl | 0x3);
Bruce Allanaf667a22010-12-31 06:10:01 +00003124 pm_qos_update_request(&adapter->netdev->pm_qos_req, 55);
Bruce Allan53ec5492009-11-20 23:27:40 +00003125 } else {
Bruce Allanaf667a22010-12-31 06:10:01 +00003126 pm_qos_update_request(&adapter->netdev->pm_qos_req,
3127 PM_QOS_DEFAULT_VALUE);
Bruce Allan53ec5492009-11-20 23:27:40 +00003128 }
Bruce Allan97ac8ca2008-04-29 09:16:05 -07003129 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07003130
3131 /* Enable Receives */
3132 ew32(RCTL, rctl);
3133}
3134
3135/**
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003136 * e1000e_write_mc_addr_list - write multicast addresses to MTA
Auke Kokbc7f75f2007-09-17 12:30:59 -07003137 * @netdev: network interface device structure
3138 *
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003139 * Writes multicast address list to the MTA hash table.
3140 * Returns: -ENOMEM on failure
3141 * 0 on no addresses written
3142 * X on writing X addresses to MTA
3143 */
3144static int e1000e_write_mc_addr_list(struct net_device *netdev)
Auke Kokbc7f75f2007-09-17 12:30:59 -07003145{
3146 struct e1000_adapter *adapter = netdev_priv(netdev);
3147 struct e1000_hw *hw = &adapter->hw;
Jiri Pirko22bedad32010-04-01 21:22:57 +00003148 struct netdev_hw_addr *ha;
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003149 u8 *mta_list;
3150 int i;
3151
3152 if (netdev_mc_empty(netdev)) {
3153 /* nothing to program, so clear mc list */
3154 hw->mac.ops.update_mc_addr_list(hw, NULL, 0);
3155 return 0;
3156 }
3157
3158 mta_list = kzalloc(netdev_mc_count(netdev) * ETH_ALEN, GFP_ATOMIC);
3159 if (!mta_list)
3160 return -ENOMEM;
3161
3162 /* update_mc_addr_list expects a packed array of only addresses. */
3163 i = 0;
3164 netdev_for_each_mc_addr(ha, netdev)
3165 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN);
3166
3167 hw->mac.ops.update_mc_addr_list(hw, mta_list, i);
3168 kfree(mta_list);
3169
3170 return netdev_mc_count(netdev);
3171}
3172
3173/**
3174 * e1000e_write_uc_addr_list - write unicast addresses to RAR table
3175 * @netdev: network interface device structure
3176 *
3177 * Writes unicast address list to the RAR table.
3178 * Returns: -ENOMEM on failure/insufficient address space
3179 * 0 on no addresses written
3180 * X on writing X addresses to the RAR table
3181 **/
3182static int e1000e_write_uc_addr_list(struct net_device *netdev)
3183{
3184 struct e1000_adapter *adapter = netdev_priv(netdev);
3185 struct e1000_hw *hw = &adapter->hw;
3186 unsigned int rar_entries = hw->mac.rar_entry_count;
3187 int count = 0;
3188
3189 /* save a rar entry for our hardware address */
3190 rar_entries--;
3191
3192 /* save a rar entry for the LAA workaround */
3193 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA)
3194 rar_entries--;
3195
3196 /* return ENOMEM indicating insufficient memory for addresses */
3197 if (netdev_uc_count(netdev) > rar_entries)
3198 return -ENOMEM;
3199
3200 if (!netdev_uc_empty(netdev) && rar_entries) {
3201 struct netdev_hw_addr *ha;
3202
3203 /*
3204 * write the addresses in reverse order to avoid write
3205 * combining
3206 */
3207 netdev_for_each_uc_addr(ha, netdev) {
3208 if (!rar_entries)
3209 break;
Bruce Allan69e1e012012-04-14 03:28:50 +00003210 hw->mac.ops.rar_set(hw, ha->addr, rar_entries--);
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003211 count++;
3212 }
3213 }
3214
3215 /* zero out the remaining RAR entries not used above */
3216 for (; rar_entries > 0; rar_entries--) {
3217 ew32(RAH(rar_entries), 0);
3218 ew32(RAL(rar_entries), 0);
3219 }
3220 e1e_flush();
3221
3222 return count;
3223}
3224
3225/**
3226 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set
3227 * @netdev: network interface device structure
3228 *
3229 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast
3230 * address list or the network interface flags are updated. This routine is
3231 * responsible for configuring the hardware for proper unicast, multicast,
3232 * promiscuous mode, and all-multi behavior.
3233 **/
3234static void e1000e_set_rx_mode(struct net_device *netdev)
3235{
3236 struct e1000_adapter *adapter = netdev_priv(netdev);
3237 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003238 u32 rctl;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003239
3240 /* Check for Promiscuous and All Multicast modes */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003241 rctl = er32(RCTL);
3242
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003243 /* clear the affected bits */
3244 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
3245
Auke Kokbc7f75f2007-09-17 12:30:59 -07003246 if (netdev->flags & IFF_PROMISC) {
3247 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
Jeff Kirsher86d70e52011-03-25 16:01:01 +00003248 /* Do not hardware filter VLANs in promisc mode */
3249 e1000e_vlan_filter_disable(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003250 } else {
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003251 int count;
Bruce Allan3d3a1672012-02-23 03:13:18 +00003252
Patrick McHardy746b9f02008-07-16 20:15:45 -07003253 if (netdev->flags & IFF_ALLMULTI) {
3254 rctl |= E1000_RCTL_MPE;
Patrick McHardy746b9f02008-07-16 20:15:45 -07003255 } else {
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003256 /*
3257 * Write addresses to the MTA, if the attempt fails
3258 * then we should just turn on promiscuous mode so
3259 * that we can at least receive multicast traffic
3260 */
3261 count = e1000e_write_mc_addr_list(netdev);
3262 if (count < 0)
3263 rctl |= E1000_RCTL_MPE;
Patrick McHardy746b9f02008-07-16 20:15:45 -07003264 }
Jeff Kirsher86d70e52011-03-25 16:01:01 +00003265 e1000e_vlan_filter_enable(adapter);
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003266 /*
3267 * Write addresses to available RAR registers, if there is not
3268 * sufficient space to store all the addresses then enable
3269 * unicast promiscuous mode
3270 */
3271 count = e1000e_write_uc_addr_list(netdev);
3272 if (count < 0)
3273 rctl |= E1000_RCTL_UPE;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003274 }
3275
3276 ew32(RCTL, rctl);
3277
Jeff Kirsher86d70e52011-03-25 16:01:01 +00003278 if (netdev->features & NETIF_F_HW_VLAN_RX)
3279 e1000e_vlan_strip_enable(adapter);
3280 else
3281 e1000e_vlan_strip_disable(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003282}
3283
Bruce Allan70495a52012-01-11 01:26:50 +00003284static void e1000e_setup_rss_hash(struct e1000_adapter *adapter)
3285{
3286 struct e1000_hw *hw = &adapter->hw;
3287 u32 mrqc, rxcsum;
3288 int i;
3289 static const u32 rsskey[10] = {
3290 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0,
3291 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe
3292 };
3293
3294 /* Fill out hash function seed */
3295 for (i = 0; i < 10; i++)
3296 ew32(RSSRK(i), rsskey[i]);
3297
3298 /* Direct all traffic to queue 0 */
3299 for (i = 0; i < 32; i++)
3300 ew32(RETA(i), 0);
3301
3302 /*
3303 * Disable raw packet checksumming so that RSS hash is placed in
3304 * descriptor on writeback.
3305 */
3306 rxcsum = er32(RXCSUM);
3307 rxcsum |= E1000_RXCSUM_PCSD;
3308
3309 ew32(RXCSUM, rxcsum);
3310
3311 mrqc = (E1000_MRQC_RSS_FIELD_IPV4 |
3312 E1000_MRQC_RSS_FIELD_IPV4_TCP |
3313 E1000_MRQC_RSS_FIELD_IPV6 |
3314 E1000_MRQC_RSS_FIELD_IPV6_TCP |
3315 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX);
3316
3317 ew32(MRQC, mrqc);
3318}
3319
Auke Kokbc7f75f2007-09-17 12:30:59 -07003320/**
Bruce Allanad680762008-03-28 09:15:03 -07003321 * e1000_configure - configure the hardware for Rx and Tx
Auke Kokbc7f75f2007-09-17 12:30:59 -07003322 * @adapter: private board structure
3323 **/
3324static void e1000_configure(struct e1000_adapter *adapter)
3325{
Bruce Allan55aa6982011-12-16 00:45:45 +00003326 struct e1000_ring *rx_ring = adapter->rx_ring;
3327
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003328 e1000e_set_rx_mode(adapter->netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003329
3330 e1000_restore_vlan(adapter);
Bruce Allancd791612010-05-10 14:59:51 +00003331 e1000_init_manageability_pt(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003332
3333 e1000_configure_tx(adapter);
Bruce Allan70495a52012-01-11 01:26:50 +00003334
3335 if (adapter->netdev->features & NETIF_F_RXHASH)
3336 e1000e_setup_rss_hash(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003337 e1000_setup_rctl(adapter);
3338 e1000_configure_rx(adapter);
Bruce Allan55aa6982011-12-16 00:45:45 +00003339 adapter->alloc_rx_buf(rx_ring, e1000_desc_unused(rx_ring), GFP_KERNEL);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003340}
3341
3342/**
3343 * e1000e_power_up_phy - restore link in case the phy was powered down
3344 * @adapter: address of board private structure
3345 *
3346 * The phy may be powered down to save power and turn off link when the
3347 * driver is unloaded and wake on lan is not enabled (among others)
3348 * *** this routine MUST be followed by a call to e1000e_reset ***
3349 **/
3350void e1000e_power_up_phy(struct e1000_adapter *adapter)
3351{
Bruce Allan17f208d2009-12-01 15:47:22 +00003352 if (adapter->hw.phy.ops.power_up)
3353 adapter->hw.phy.ops.power_up(&adapter->hw);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003354
3355 adapter->hw.mac.ops.setup_link(&adapter->hw);
3356}
3357
3358/**
3359 * e1000_power_down_phy - Power down the PHY
3360 *
Bruce Allan17f208d2009-12-01 15:47:22 +00003361 * Power down the PHY so no link is implied when interface is down.
3362 * The PHY cannot be powered down if management or WoL is active.
Auke Kokbc7f75f2007-09-17 12:30:59 -07003363 */
3364static void e1000_power_down_phy(struct e1000_adapter *adapter)
3365{
Auke Kokbc7f75f2007-09-17 12:30:59 -07003366 /* WoL is enabled */
Auke Kok23b66e22008-02-11 09:25:51 -08003367 if (adapter->wol)
Auke Kokbc7f75f2007-09-17 12:30:59 -07003368 return;
3369
Bruce Allan17f208d2009-12-01 15:47:22 +00003370 if (adapter->hw.phy.ops.power_down)
3371 adapter->hw.phy.ops.power_down(&adapter->hw);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003372}
3373
3374/**
3375 * e1000e_reset - bring the hardware into a known good state
3376 *
3377 * This function boots the hardware and enables some settings that
3378 * require a configuration cycle of the hardware - those cannot be
3379 * set/changed during runtime. After reset the device needs to be
Bruce Allanad680762008-03-28 09:15:03 -07003380 * properly configured for Rx, Tx etc.
Auke Kokbc7f75f2007-09-17 12:30:59 -07003381 */
3382void e1000e_reset(struct e1000_adapter *adapter)
3383{
3384 struct e1000_mac_info *mac = &adapter->hw.mac;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003385 struct e1000_fc_info *fc = &adapter->hw.fc;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003386 struct e1000_hw *hw = &adapter->hw;
3387 u32 tx_space, min_tx_space, min_rx_space;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003388 u32 pba = adapter->pba;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003389 u16 hwm;
3390
Bruce Allanad680762008-03-28 09:15:03 -07003391 /* reset Packet Buffer Allocation to default */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003392 ew32(PBA, pba);
Auke Kokdf762462007-10-25 13:57:53 -07003393
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003394 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
Bruce Allanad680762008-03-28 09:15:03 -07003395 /*
3396 * To maintain wire speed transmits, the Tx FIFO should be
Auke Kokbc7f75f2007-09-17 12:30:59 -07003397 * large enough to accommodate two full transmit packets,
3398 * rounded up to the next 1KB and expressed in KB. Likewise,
3399 * the Rx FIFO should be large enough to accommodate at least
3400 * one full receive packet and is similarly rounded up and
Bruce Allanad680762008-03-28 09:15:03 -07003401 * expressed in KB.
3402 */
Auke Kokdf762462007-10-25 13:57:53 -07003403 pba = er32(PBA);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003404 /* upper 16 bits has Tx packet buffer allocation size in KB */
Auke Kokdf762462007-10-25 13:57:53 -07003405 tx_space = pba >> 16;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003406 /* lower 16 bits has Rx packet buffer allocation size in KB */
Auke Kokdf762462007-10-25 13:57:53 -07003407 pba &= 0xffff;
Bruce Allanad680762008-03-28 09:15:03 -07003408 /*
Bruce Allanaf667a22010-12-31 06:10:01 +00003409 * the Tx fifo also stores 16 bytes of information about the Tx
Bruce Allanad680762008-03-28 09:15:03 -07003410 * but don't include ethernet FCS because hardware appends it
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003411 */
3412 min_tx_space = (adapter->max_frame_size +
Auke Kokbc7f75f2007-09-17 12:30:59 -07003413 sizeof(struct e1000_tx_desc) -
3414 ETH_FCS_LEN) * 2;
3415 min_tx_space = ALIGN(min_tx_space, 1024);
3416 min_tx_space >>= 10;
3417 /* software strips receive CRC, so leave room for it */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003418 min_rx_space = adapter->max_frame_size;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003419 min_rx_space = ALIGN(min_rx_space, 1024);
3420 min_rx_space >>= 10;
3421
Bruce Allanad680762008-03-28 09:15:03 -07003422 /*
3423 * If current Tx allocation is less than the min Tx FIFO size,
Auke Kokbc7f75f2007-09-17 12:30:59 -07003424 * and the min Tx FIFO size is less than the current Rx FIFO
Bruce Allanad680762008-03-28 09:15:03 -07003425 * allocation, take space away from current Rx allocation
3426 */
Auke Kokdf762462007-10-25 13:57:53 -07003427 if ((tx_space < min_tx_space) &&
3428 ((min_tx_space - tx_space) < pba)) {
3429 pba -= min_tx_space - tx_space;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003430
Bruce Allanad680762008-03-28 09:15:03 -07003431 /*
Bruce Allanaf667a22010-12-31 06:10:01 +00003432 * if short on Rx space, Rx wins and must trump Tx
Bruce Allanad680762008-03-28 09:15:03 -07003433 * adjustment or use Early Receive if available
3434 */
Bruce Allan79d4e902011-12-16 00:46:27 +00003435 if (pba < min_rx_space)
Auke Kokdf762462007-10-25 13:57:53 -07003436 pba = min_rx_space;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003437 }
Auke Kokdf762462007-10-25 13:57:53 -07003438
3439 ew32(PBA, pba);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003440 }
3441
Bruce Allanad680762008-03-28 09:15:03 -07003442 /*
3443 * flow control settings
3444 *
Bruce Allan38eb3942009-11-19 12:34:20 +00003445 * The high water mark must be low enough to fit one full frame
Auke Kokbc7f75f2007-09-17 12:30:59 -07003446 * (or the size used for early receive) above it in the Rx FIFO.
3447 * Set it to the lower of:
3448 * - 90% of the Rx FIFO size, and
Bruce Allan38eb3942009-11-19 12:34:20 +00003449 * - the full Rx FIFO size minus one full frame
Bruce Allanad680762008-03-28 09:15:03 -07003450 */
Bruce Alland3738bb2010-06-16 13:27:28 +00003451 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME)
3452 fc->pause_time = 0xFFFF;
3453 else
3454 fc->pause_time = E1000_FC_PAUSE_TIME;
Bruce Allanb20caa82012-02-22 09:03:03 +00003455 fc->send_xon = true;
Bruce Alland3738bb2010-06-16 13:27:28 +00003456 fc->current_mode = fc->requested_mode;
3457
3458 switch (hw->mac.type) {
Bruce Allan79d4e902011-12-16 00:46:27 +00003459 case e1000_ich9lan:
3460 case e1000_ich10lan:
3461 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3462 pba = 14;
3463 ew32(PBA, pba);
3464 fc->high_water = 0x2800;
3465 fc->low_water = fc->high_water - 8;
3466 break;
3467 }
3468 /* fall-through */
Bruce Alland3738bb2010-06-16 13:27:28 +00003469 default:
Bruce Allan79d4e902011-12-16 00:46:27 +00003470 hwm = min(((pba << 10) * 9 / 10),
3471 ((pba << 10) - adapter->max_frame_size));
Bruce Alland3738bb2010-06-16 13:27:28 +00003472
3473 fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */
3474 fc->low_water = fc->high_water - 8;
3475 break;
3476 case e1000_pchlan:
Bruce Allan38eb3942009-11-19 12:34:20 +00003477 /*
3478 * Workaround PCH LOM adapter hangs with certain network
3479 * loads. If hangs persist, try disabling Tx flow control.
3480 */
3481 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3482 fc->high_water = 0x3500;
3483 fc->low_water = 0x1500;
3484 } else {
3485 fc->high_water = 0x5000;
3486 fc->low_water = 0x3000;
3487 }
Bruce Allana3055952010-05-10 15:02:12 +00003488 fc->refresh_time = 0x1000;
Bruce Alland3738bb2010-06-16 13:27:28 +00003489 break;
3490 case e1000_pch2lan:
Bruce Allan2fbe4522012-04-19 03:21:47 +00003491 case e1000_pch_lpt:
Bruce Alland3738bb2010-06-16 13:27:28 +00003492 fc->high_water = 0x05C20;
3493 fc->low_water = 0x05048;
3494 fc->pause_time = 0x0650;
3495 fc->refresh_time = 0x0400;
Bruce Allan828bac82010-09-29 21:39:37 +00003496 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3497 pba = 14;
3498 ew32(PBA, pba);
3499 }
Bruce Alland3738bb2010-06-16 13:27:28 +00003500 break;
Bruce Allan38eb3942009-11-19 12:34:20 +00003501 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07003502
Bruce Allan828bac82010-09-29 21:39:37 +00003503 /*
3504 * Disable Adaptive Interrupt Moderation if 2 full packets cannot
Bruce Allan79d4e902011-12-16 00:46:27 +00003505 * fit in receive buffer.
Bruce Allan828bac82010-09-29 21:39:37 +00003506 */
3507 if (adapter->itr_setting & 0x3) {
Bruce Allan79d4e902011-12-16 00:46:27 +00003508 if ((adapter->max_frame_size * 2) > (pba << 10)) {
Bruce Allan828bac82010-09-29 21:39:37 +00003509 if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) {
3510 dev_info(&adapter->pdev->dev,
3511 "Interrupt Throttle Rate turned off\n");
3512 adapter->flags2 |= FLAG2_DISABLE_AIM;
Matthew Vick22a4cca2012-07-12 00:02:42 +00003513 e1000e_write_itr(adapter, 0);
Bruce Allan828bac82010-09-29 21:39:37 +00003514 }
3515 } else if (adapter->flags2 & FLAG2_DISABLE_AIM) {
3516 dev_info(&adapter->pdev->dev,
3517 "Interrupt Throttle Rate turned on\n");
3518 adapter->flags2 &= ~FLAG2_DISABLE_AIM;
3519 adapter->itr = 20000;
Matthew Vick22a4cca2012-07-12 00:02:42 +00003520 e1000e_write_itr(adapter, adapter->itr);
Bruce Allan828bac82010-09-29 21:39:37 +00003521 }
3522 }
3523
Auke Kokbc7f75f2007-09-17 12:30:59 -07003524 /* Allow time for pending master requests to run */
3525 mac->ops.reset_hw(hw);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07003526
3527 /*
3528 * For parts with AMT enabled, let the firmware know
3529 * that the network interface is in control
3530 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07003531 if (adapter->flags & FLAG_HAS_AMT)
Bruce Allan31dbe5b2011-01-06 14:29:52 +00003532 e1000e_get_hw_control(adapter);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07003533
Auke Kokbc7f75f2007-09-17 12:30:59 -07003534 ew32(WUC, 0);
3535
3536 if (mac->ops.init_hw(hw))
Jeff Kirsher44defeb2008-08-04 17:20:41 -07003537 e_err("Hardware Error\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07003538
3539 e1000_update_mng_vlan(adapter);
3540
3541 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3542 ew32(VET, ETH_P_8021Q);
3543
3544 e1000e_reset_adaptive(hw);
Bruce Allan31dbe5b2011-01-06 14:29:52 +00003545
3546 if (!netif_running(adapter->netdev) &&
3547 !test_bit(__E1000_TESTING, &adapter->state)) {
3548 e1000_power_down_phy(adapter);
3549 return;
3550 }
3551
Auke Kokbc7f75f2007-09-17 12:30:59 -07003552 e1000_get_phy_info(hw);
3553
Bruce Allan918d7192009-06-02 11:28:20 +00003554 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) &&
3555 !(adapter->flags & FLAG_SMART_POWER_DOWN)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07003556 u16 phy_data = 0;
Bruce Allanad680762008-03-28 09:15:03 -07003557 /*
3558 * speed up time to link by disabling smart power down, ignore
Auke Kokbc7f75f2007-09-17 12:30:59 -07003559 * the return value of this function because there is nothing
Bruce Allanad680762008-03-28 09:15:03 -07003560 * different we would do if it failed
3561 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003562 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
3563 phy_data &= ~IGP02E1000_PM_SPD;
3564 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
3565 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07003566}
3567
3568int e1000e_up(struct e1000_adapter *adapter)
3569{
3570 struct e1000_hw *hw = &adapter->hw;
3571
3572 /* hardware has been reset, we need to reload some things */
3573 e1000_configure(adapter);
3574
3575 clear_bit(__E1000_DOWN, &adapter->state);
3576
Bruce Allan4662e822008-08-26 18:37:06 -07003577 if (adapter->msix_entries)
3578 e1000_configure_msix(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003579 e1000_irq_enable(adapter);
3580
Bruce Allan400484f2011-05-13 07:20:03 +00003581 netif_start_queue(adapter->netdev);
Jesse Brandeburg4cb9be72009-04-21 18:42:05 +00003582
Auke Kokbc7f75f2007-09-17 12:30:59 -07003583 /* fire a link change interrupt to start the watchdog */
Bruce Allan52a9b232010-05-10 15:00:10 +00003584 if (adapter->msix_entries)
3585 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
3586 else
3587 ew32(ICS, E1000_ICS_LSC);
3588
Auke Kokbc7f75f2007-09-17 12:30:59 -07003589 return 0;
3590}
3591
Jesse Brandeburg713b3c92011-02-02 10:19:50 +00003592static void e1000e_flush_descriptors(struct e1000_adapter *adapter)
3593{
3594 struct e1000_hw *hw = &adapter->hw;
3595
3596 if (!(adapter->flags2 & FLAG2_DMA_BURST))
3597 return;
3598
3599 /* flush pending descriptor writebacks to memory */
3600 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
3601 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
3602
3603 /* execute the writes immediately */
3604 e1e_flush();
Matthew Vickbf030852012-03-16 09:03:00 +00003605
3606 /*
3607 * due to rare timing issues, write to TIDV/RDTR again to ensure the
3608 * write is successful
3609 */
3610 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
3611 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
3612
3613 /* execute the writes immediately */
3614 e1e_flush();
Jesse Brandeburg713b3c92011-02-02 10:19:50 +00003615}
3616
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00003617static void e1000e_update_stats(struct e1000_adapter *adapter);
3618
Auke Kokbc7f75f2007-09-17 12:30:59 -07003619void e1000e_down(struct e1000_adapter *adapter)
3620{
3621 struct net_device *netdev = adapter->netdev;
3622 struct e1000_hw *hw = &adapter->hw;
3623 u32 tctl, rctl;
3624
Bruce Allanad680762008-03-28 09:15:03 -07003625 /*
3626 * signal that we're down so the interrupt handler does not
3627 * reschedule our watchdog timer
3628 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003629 set_bit(__E1000_DOWN, &adapter->state);
3630
3631 /* disable receives in the hardware */
3632 rctl = er32(RCTL);
David S. Miller823dcd22011-08-20 10:39:12 -07003633 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
3634 ew32(RCTL, rctl & ~E1000_RCTL_EN);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003635 /* flush and sleep below */
3636
Jesse Brandeburg4cb9be72009-04-21 18:42:05 +00003637 netif_stop_queue(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003638
3639 /* disable transmits in the hardware */
3640 tctl = er32(TCTL);
3641 tctl &= ~E1000_TCTL_EN;
3642 ew32(TCTL, tctl);
David S. Miller823dcd22011-08-20 10:39:12 -07003643
Auke Kokbc7f75f2007-09-17 12:30:59 -07003644 /* flush both disables and wait for them to finish */
3645 e1e_flush();
Bruce Allan1bba4382011-03-19 00:27:20 +00003646 usleep_range(10000, 20000);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003647
Auke Kokbc7f75f2007-09-17 12:30:59 -07003648 e1000_irq_disable(adapter);
3649
3650 del_timer_sync(&adapter->watchdog_timer);
3651 del_timer_sync(&adapter->phy_info_timer);
3652
Auke Kokbc7f75f2007-09-17 12:30:59 -07003653 netif_carrier_off(netdev);
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00003654
3655 spin_lock(&adapter->stats64_lock);
3656 e1000e_update_stats(adapter);
3657 spin_unlock(&adapter->stats64_lock);
3658
Bruce Allan400484f2011-05-13 07:20:03 +00003659 e1000e_flush_descriptors(adapter);
Bruce Allan55aa6982011-12-16 00:45:45 +00003660 e1000_clean_tx_ring(adapter->tx_ring);
3661 e1000_clean_rx_ring(adapter->rx_ring);
Bruce Allan400484f2011-05-13 07:20:03 +00003662
Auke Kokbc7f75f2007-09-17 12:30:59 -07003663 adapter->link_speed = 0;
3664 adapter->link_duplex = 0;
3665
Jeff Kirsher52cc3082008-06-24 17:01:29 -07003666 if (!pci_channel_offline(adapter->pdev))
3667 e1000e_reset(adapter);
Jesse Brandeburg713b3c92011-02-02 10:19:50 +00003668
Auke Kokbc7f75f2007-09-17 12:30:59 -07003669 /*
3670 * TODO: for power management, we could drop the link and
3671 * pci_disable_device here.
3672 */
3673}
3674
3675void e1000e_reinit_locked(struct e1000_adapter *adapter)
3676{
3677 might_sleep();
3678 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
Bruce Allan1bba4382011-03-19 00:27:20 +00003679 usleep_range(1000, 2000);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003680 e1000e_down(adapter);
3681 e1000e_up(adapter);
3682 clear_bit(__E1000_RESETTING, &adapter->state);
3683}
3684
3685/**
3686 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
3687 * @adapter: board private structure to initialize
3688 *
3689 * e1000_sw_init initializes the Adapter private data structure.
3690 * Fields are initialized based on PCI device information and
3691 * OS network device settings (MTU size).
3692 **/
3693static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
3694{
Auke Kokbc7f75f2007-09-17 12:30:59 -07003695 struct net_device *netdev = adapter->netdev;
3696
3697 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
3698 adapter->rx_ps_bsize0 = 128;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003699 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
3700 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
Bruce Allan55aa6982011-12-16 00:45:45 +00003701 adapter->tx_ring_count = E1000_DEFAULT_TXD;
3702 adapter->rx_ring_count = E1000_DEFAULT_RXD;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003703
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00003704 spin_lock_init(&adapter->stats64_lock);
3705
Bruce Allan4662e822008-08-26 18:37:06 -07003706 e1000e_set_interrupt_capability(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003707
Bruce Allan4662e822008-08-26 18:37:06 -07003708 if (e1000_alloc_queues(adapter))
3709 return -ENOMEM;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003710
Auke Kokbc7f75f2007-09-17 12:30:59 -07003711 /* Explicitly disable IRQ since the NIC can be in any state. */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003712 e1000_irq_disable(adapter);
3713
Auke Kokbc7f75f2007-09-17 12:30:59 -07003714 set_bit(__E1000_DOWN, &adapter->state);
3715 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003716}
3717
3718/**
Bruce Allanf8d59f72008-08-08 18:36:11 -07003719 * e1000_intr_msi_test - Interrupt Handler
3720 * @irq: interrupt number
3721 * @data: pointer to a network interface device structure
3722 **/
3723static irqreturn_t e1000_intr_msi_test(int irq, void *data)
3724{
3725 struct net_device *netdev = data;
3726 struct e1000_adapter *adapter = netdev_priv(netdev);
3727 struct e1000_hw *hw = &adapter->hw;
3728 u32 icr = er32(ICR);
3729
Bruce Allan3bb99fe2009-11-20 23:25:07 +00003730 e_dbg("icr is %08X\n", icr);
Bruce Allanf8d59f72008-08-08 18:36:11 -07003731 if (icr & E1000_ICR_RXSEQ) {
3732 adapter->flags &= ~FLAG_MSI_TEST_FAILED;
3733 wmb();
3734 }
3735
3736 return IRQ_HANDLED;
3737}
3738
3739/**
3740 * e1000_test_msi_interrupt - Returns 0 for successful test
3741 * @adapter: board private struct
3742 *
3743 * code flow taken from tg3.c
3744 **/
3745static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
3746{
3747 struct net_device *netdev = adapter->netdev;
3748 struct e1000_hw *hw = &adapter->hw;
3749 int err;
3750
3751 /* poll_enable hasn't been called yet, so don't need disable */
3752 /* clear any pending events */
3753 er32(ICR);
3754
3755 /* free the real vector and request a test handler */
3756 e1000_free_irq(adapter);
Bruce Allan4662e822008-08-26 18:37:06 -07003757 e1000e_reset_interrupt_capability(adapter);
Bruce Allanf8d59f72008-08-08 18:36:11 -07003758
3759 /* Assume that the test fails, if it succeeds then the test
3760 * MSI irq handler will unset this flag */
3761 adapter->flags |= FLAG_MSI_TEST_FAILED;
3762
3763 err = pci_enable_msi(adapter->pdev);
3764 if (err)
3765 goto msi_test_failed;
3766
Joe Perchesa0607fd2009-11-18 23:29:17 -08003767 err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0,
Bruce Allanf8d59f72008-08-08 18:36:11 -07003768 netdev->name, netdev);
3769 if (err) {
3770 pci_disable_msi(adapter->pdev);
3771 goto msi_test_failed;
3772 }
3773
3774 wmb();
3775
3776 e1000_irq_enable(adapter);
3777
3778 /* fire an unusual interrupt on the test handler */
3779 ew32(ICS, E1000_ICS_RXSEQ);
3780 e1e_flush();
Prasanna S Panchamukhi569a3af2012-04-19 17:01:00 +00003781 msleep(100);
Bruce Allanf8d59f72008-08-08 18:36:11 -07003782
3783 e1000_irq_disable(adapter);
3784
3785 rmb();
3786
3787 if (adapter->flags & FLAG_MSI_TEST_FAILED) {
Bruce Allan4662e822008-08-26 18:37:06 -07003788 adapter->int_mode = E1000E_INT_MODE_LEGACY;
Jean Delvare068e8a32010-09-12 22:45:39 +00003789 e_info("MSI interrupt test failed, using legacy interrupt.\n");
Bruce Allan24b706b2012-01-31 06:37:22 +00003790 } else {
Jean Delvare068e8a32010-09-12 22:45:39 +00003791 e_dbg("MSI interrupt test succeeded!\n");
Bruce Allan24b706b2012-01-31 06:37:22 +00003792 }
Bruce Allanf8d59f72008-08-08 18:36:11 -07003793
3794 free_irq(adapter->pdev->irq, netdev);
3795 pci_disable_msi(adapter->pdev);
3796
Bruce Allanf8d59f72008-08-08 18:36:11 -07003797msi_test_failed:
Bruce Allan4662e822008-08-26 18:37:06 -07003798 e1000e_set_interrupt_capability(adapter);
Jean Delvare068e8a32010-09-12 22:45:39 +00003799 return e1000_request_irq(adapter);
Bruce Allanf8d59f72008-08-08 18:36:11 -07003800}
3801
3802/**
3803 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3804 * @adapter: board private struct
3805 *
3806 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3807 **/
3808static int e1000_test_msi(struct e1000_adapter *adapter)
3809{
3810 int err;
3811 u16 pci_cmd;
3812
3813 if (!(adapter->flags & FLAG_MSI_ENABLED))
3814 return 0;
3815
3816 /* disable SERR in case the MSI write causes a master abort */
3817 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
Dean Nelson36f24072010-06-29 18:12:05 +00003818 if (pci_cmd & PCI_COMMAND_SERR)
3819 pci_write_config_word(adapter->pdev, PCI_COMMAND,
3820 pci_cmd & ~PCI_COMMAND_SERR);
Bruce Allanf8d59f72008-08-08 18:36:11 -07003821
3822 err = e1000_test_msi_interrupt(adapter);
3823
Dean Nelson36f24072010-06-29 18:12:05 +00003824 /* re-enable SERR */
3825 if (pci_cmd & PCI_COMMAND_SERR) {
3826 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
3827 pci_cmd |= PCI_COMMAND_SERR;
3828 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);
3829 }
Bruce Allanf8d59f72008-08-08 18:36:11 -07003830
Bruce Allanf8d59f72008-08-08 18:36:11 -07003831 return err;
3832}
3833
3834/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07003835 * e1000_open - Called when a network interface is made active
3836 * @netdev: network interface device structure
3837 *
3838 * Returns 0 on success, negative value on failure
3839 *
3840 * The open entry point is called when a network interface is made
3841 * active by the system (IFF_UP). At this point all resources needed
3842 * for transmit and receive operations are allocated, the interrupt
3843 * handler is registered with the OS, the watchdog timer is started,
3844 * and the stack is notified that the interface is ready.
3845 **/
3846static int e1000_open(struct net_device *netdev)
3847{
3848 struct e1000_adapter *adapter = netdev_priv(netdev);
3849 struct e1000_hw *hw = &adapter->hw;
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00003850 struct pci_dev *pdev = adapter->pdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003851 int err;
3852
3853 /* disallow open during test */
3854 if (test_bit(__E1000_TESTING, &adapter->state))
3855 return -EBUSY;
3856
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00003857 pm_runtime_get_sync(&pdev->dev);
3858
Jesse Brandeburg9c563d22009-04-17 20:44:34 +00003859 netif_carrier_off(netdev);
3860
Auke Kokbc7f75f2007-09-17 12:30:59 -07003861 /* allocate transmit descriptors */
Bruce Allan55aa6982011-12-16 00:45:45 +00003862 err = e1000e_setup_tx_resources(adapter->tx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003863 if (err)
3864 goto err_setup_tx;
3865
3866 /* allocate receive descriptors */
Bruce Allan55aa6982011-12-16 00:45:45 +00003867 err = e1000e_setup_rx_resources(adapter->rx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003868 if (err)
3869 goto err_setup_rx;
3870
Bruce Allan11b08be2010-05-10 14:59:31 +00003871 /*
3872 * If AMT is enabled, let the firmware know that the network
3873 * interface is now open and reset the part to a known state.
3874 */
3875 if (adapter->flags & FLAG_HAS_AMT) {
Bruce Allan31dbe5b2011-01-06 14:29:52 +00003876 e1000e_get_hw_control(adapter);
Bruce Allan11b08be2010-05-10 14:59:31 +00003877 e1000e_reset(adapter);
3878 }
3879
Auke Kokbc7f75f2007-09-17 12:30:59 -07003880 e1000e_power_up_phy(adapter);
3881
3882 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
3883 if ((adapter->hw.mng_cookie.status &
3884 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
3885 e1000_update_mng_vlan(adapter);
3886
Bruce Allan79d4e902011-12-16 00:46:27 +00003887 /* DMA latency requirement to workaround jumbo issue */
3888 if (adapter->hw.mac.type == e1000_pch2lan)
Linus Torvalds6ba74012010-08-04 11:47:58 -07003889 pm_qos_add_request(&adapter->netdev->pm_qos_req,
3890 PM_QOS_CPU_DMA_LATENCY,
3891 PM_QOS_DEFAULT_VALUE);
Florian Micklerc128ec22010-08-02 14:27:00 +00003892
Bruce Allanad680762008-03-28 09:15:03 -07003893 /*
Bruce Allanad680762008-03-28 09:15:03 -07003894 * before we allocate an interrupt, we must be ready to handle it.
Auke Kokbc7f75f2007-09-17 12:30:59 -07003895 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3896 * as soon as we call pci_request_irq, so we have to setup our
Bruce Allanad680762008-03-28 09:15:03 -07003897 * clean_rx handler before we do so.
3898 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003899 e1000_configure(adapter);
3900
3901 err = e1000_request_irq(adapter);
3902 if (err)
3903 goto err_req_irq;
3904
Bruce Allanf8d59f72008-08-08 18:36:11 -07003905 /*
3906 * Work around PCIe errata with MSI interrupts causing some chipsets to
3907 * ignore e1000e MSI messages, which means we need to test our MSI
3908 * interrupt now
3909 */
Bruce Allan4662e822008-08-26 18:37:06 -07003910 if (adapter->int_mode != E1000E_INT_MODE_LEGACY) {
Bruce Allanf8d59f72008-08-08 18:36:11 -07003911 err = e1000_test_msi(adapter);
3912 if (err) {
3913 e_err("Interrupt allocation failed\n");
3914 goto err_req_irq;
3915 }
3916 }
3917
Auke Kokbc7f75f2007-09-17 12:30:59 -07003918 /* From here on the code is the same as e1000e_up() */
3919 clear_bit(__E1000_DOWN, &adapter->state);
3920
3921 napi_enable(&adapter->napi);
3922
3923 e1000_irq_enable(adapter);
3924
Jeff Kirsher09357b02011-11-18 14:25:00 +00003925 adapter->tx_hang_recheck = false;
Jesse Brandeburg4cb9be72009-04-21 18:42:05 +00003926 netif_start_queue(netdev);
Jeff Kirsherd55b53f2008-07-18 04:33:03 -07003927
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00003928 adapter->idle_check = true;
3929 pm_runtime_put(&pdev->dev);
3930
Auke Kokbc7f75f2007-09-17 12:30:59 -07003931 /* fire a link status change interrupt to start the watchdog */
Bruce Allan52a9b232010-05-10 15:00:10 +00003932 if (adapter->msix_entries)
3933 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
3934 else
3935 ew32(ICS, E1000_ICS_LSC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003936
3937 return 0;
3938
3939err_req_irq:
Bruce Allan31dbe5b2011-01-06 14:29:52 +00003940 e1000e_release_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003941 e1000_power_down_phy(adapter);
Bruce Allan55aa6982011-12-16 00:45:45 +00003942 e1000e_free_rx_resources(adapter->rx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003943err_setup_rx:
Bruce Allan55aa6982011-12-16 00:45:45 +00003944 e1000e_free_tx_resources(adapter->tx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003945err_setup_tx:
3946 e1000e_reset(adapter);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00003947 pm_runtime_put_sync(&pdev->dev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003948
3949 return err;
3950}
3951
3952/**
3953 * e1000_close - Disables a network interface
3954 * @netdev: network interface device structure
3955 *
3956 * Returns 0, this is not allowed to fail
3957 *
3958 * The close entry point is called when an interface is de-activated
3959 * by the OS. The hardware is still under the drivers control, but
3960 * needs to be disabled. A global MAC reset is issued to stop the
3961 * hardware, and all transmit and receive resources are freed.
3962 **/
3963static int e1000_close(struct net_device *netdev)
3964{
3965 struct e1000_adapter *adapter = netdev_priv(netdev);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00003966 struct pci_dev *pdev = adapter->pdev;
Bruce Allanbb9e44d2012-03-21 00:39:12 +00003967 int count = E1000_CHECK_RESET_COUNT;
3968
3969 while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
3970 usleep_range(10000, 20000);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003971
3972 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00003973
3974 pm_runtime_get_sync(&pdev->dev);
3975
Bruce Allan5f4a7802011-11-29 08:09:19 +00003976 napi_disable(&adapter->napi);
3977
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00003978 if (!test_bit(__E1000_DOWN, &adapter->state)) {
3979 e1000e_down(adapter);
3980 e1000_free_irq(adapter);
3981 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07003982 e1000_power_down_phy(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003983
Bruce Allan55aa6982011-12-16 00:45:45 +00003984 e1000e_free_tx_resources(adapter->tx_ring);
3985 e1000e_free_rx_resources(adapter->rx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003986
Bruce Allanad680762008-03-28 09:15:03 -07003987 /*
3988 * kill manageability vlan ID if supported, but not if a vlan with
3989 * the same ID is registered on the host OS (let 8021q kill it)
3990 */
Jeff Kirsher86d70e52011-03-25 16:01:01 +00003991 if (adapter->hw.mng_cookie.status &
3992 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)
Auke Kokbc7f75f2007-09-17 12:30:59 -07003993 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
3994
Bruce Allanad680762008-03-28 09:15:03 -07003995 /*
3996 * If AMT is enabled, let the firmware know that the network
3997 * interface is now closed
3998 */
Bruce Allan31dbe5b2011-01-06 14:29:52 +00003999 if ((adapter->flags & FLAG_HAS_AMT) &&
4000 !test_bit(__E1000_TESTING, &adapter->state))
4001 e1000e_release_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004002
Bruce Allan79d4e902011-12-16 00:46:27 +00004003 if (adapter->hw.mac.type == e1000_pch2lan)
Linus Torvalds6ba74012010-08-04 11:47:58 -07004004 pm_qos_remove_request(&adapter->netdev->pm_qos_req);
Florian Micklerc128ec22010-08-02 14:27:00 +00004005
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004006 pm_runtime_put_sync(&pdev->dev);
4007
Auke Kokbc7f75f2007-09-17 12:30:59 -07004008 return 0;
4009}
4010/**
4011 * e1000_set_mac - Change the Ethernet Address of the NIC
4012 * @netdev: network interface device structure
4013 * @p: pointer to an address structure
4014 *
4015 * Returns 0 on success, negative on failure
4016 **/
4017static int e1000_set_mac(struct net_device *netdev, void *p)
4018{
4019 struct e1000_adapter *adapter = netdev_priv(netdev);
Bruce Allan69e1e012012-04-14 03:28:50 +00004020 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004021 struct sockaddr *addr = p;
4022
4023 if (!is_valid_ether_addr(addr->sa_data))
4024 return -EADDRNOTAVAIL;
4025
4026 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
4027 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
4028
Bruce Allan69e1e012012-04-14 03:28:50 +00004029 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004030
4031 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) {
4032 /* activate the work around */
4033 e1000e_set_laa_state_82571(&adapter->hw, 1);
4034
Bruce Allanad680762008-03-28 09:15:03 -07004035 /*
4036 * Hold a copy of the LAA in RAR[14] This is done so that
Auke Kokbc7f75f2007-09-17 12:30:59 -07004037 * between the time RAR[0] gets clobbered and the time it
4038 * gets fixed (in e1000_watchdog), the actual LAA is in one
4039 * of the RARs and no incoming packets directed to this port
4040 * are dropped. Eventually the LAA will be in RAR[0] and
Bruce Allanad680762008-03-28 09:15:03 -07004041 * RAR[14]
4042 */
Bruce Allan69e1e012012-04-14 03:28:50 +00004043 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr,
4044 adapter->hw.mac.rar_entry_count - 1);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004045 }
4046
4047 return 0;
4048}
4049
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07004050/**
4051 * e1000e_update_phy_task - work thread to update phy
4052 * @work: pointer to our work struct
4053 *
4054 * this worker thread exists because we must acquire a
4055 * semaphore to read the phy, which we could msleep while
4056 * waiting for it, and we can't msleep in a timer.
4057 **/
4058static void e1000e_update_phy_task(struct work_struct *work)
4059{
4060 struct e1000_adapter *adapter = container_of(work,
4061 struct e1000_adapter, update_phy_task);
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00004062
4063 if (test_bit(__E1000_DOWN, &adapter->state))
4064 return;
4065
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07004066 e1000_get_phy_info(&adapter->hw);
4067}
4068
Bruce Allanad680762008-03-28 09:15:03 -07004069/*
4070 * Need to wait a few seconds after link up to get diagnostic information from
4071 * the phy
4072 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004073static void e1000_update_phy_info(unsigned long data)
4074{
4075 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00004076
4077 if (test_bit(__E1000_DOWN, &adapter->state))
4078 return;
4079
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07004080 schedule_work(&adapter->update_phy_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004081}
4082
4083/**
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004084 * e1000e_update_phy_stats - Update the PHY statistics counters
4085 * @adapter: board private structure
Bruce Allan2b6b1682011-05-13 07:20:09 +00004086 *
4087 * Read/clear the upper 16-bit PHY registers and read/accumulate lower
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004088 **/
4089static void e1000e_update_phy_stats(struct e1000_adapter *adapter)
4090{
4091 struct e1000_hw *hw = &adapter->hw;
4092 s32 ret_val;
4093 u16 phy_data;
4094
4095 ret_val = hw->phy.ops.acquire(hw);
4096 if (ret_val)
4097 return;
4098
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004099 /*
4100 * A page set is expensive so check if already on desired page.
4101 * If not, set to the page with the PHY status registers.
4102 */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004103 hw->phy.addr = 1;
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004104 ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
4105 &phy_data);
4106 if (ret_val)
4107 goto release;
Bruce Allan2b6b1682011-05-13 07:20:09 +00004108 if (phy_data != (HV_STATS_PAGE << IGP_PAGE_SHIFT)) {
4109 ret_val = hw->phy.ops.set_page(hw,
4110 HV_STATS_PAGE << IGP_PAGE_SHIFT);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004111 if (ret_val)
4112 goto release;
4113 }
4114
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004115 /* Single Collision Count */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004116 hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data);
4117 ret_val = hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004118 if (!ret_val)
4119 adapter->stats.scc += phy_data;
4120
4121 /* Excessive Collision Count */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004122 hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data);
4123 ret_val = hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004124 if (!ret_val)
4125 adapter->stats.ecol += phy_data;
4126
4127 /* Multiple Collision Count */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004128 hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data);
4129 ret_val = hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004130 if (!ret_val)
4131 adapter->stats.mcc += phy_data;
4132
4133 /* Late Collision Count */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004134 hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data);
4135 ret_val = hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004136 if (!ret_val)
4137 adapter->stats.latecol += phy_data;
4138
4139 /* Collision Count - also used for adaptive IFS */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004140 hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data);
4141 ret_val = hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004142 if (!ret_val)
4143 hw->mac.collision_delta = phy_data;
4144
4145 /* Defer Count */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004146 hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data);
4147 ret_val = hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004148 if (!ret_val)
4149 adapter->stats.dc += phy_data;
4150
4151 /* Transmit with no CRS */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004152 hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data);
4153 ret_val = hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004154 if (!ret_val)
4155 adapter->stats.tncrs += phy_data;
4156
4157release:
4158 hw->phy.ops.release(hw);
4159}
4160
4161/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07004162 * e1000e_update_stats - Update the board statistics counters
4163 * @adapter: board private structure
4164 **/
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00004165static void e1000e_update_stats(struct e1000_adapter *adapter)
Auke Kokbc7f75f2007-09-17 12:30:59 -07004166{
Ajit Khaparde7274c202009-10-07 02:44:26 +00004167 struct net_device *netdev = adapter->netdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004168 struct e1000_hw *hw = &adapter->hw;
4169 struct pci_dev *pdev = adapter->pdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004170
4171 /*
4172 * Prevent stats update while adapter is being reset, or if the pci
4173 * connection is down.
4174 */
4175 if (adapter->link_speed == 0)
4176 return;
4177 if (pci_channel_offline(pdev))
4178 return;
4179
Auke Kokbc7f75f2007-09-17 12:30:59 -07004180 adapter->stats.crcerrs += er32(CRCERRS);
4181 adapter->stats.gprc += er32(GPRC);
Bruce Allan7c257692008-04-23 11:09:00 -07004182 adapter->stats.gorc += er32(GORCL);
4183 er32(GORCH); /* Clear gorc */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004184 adapter->stats.bprc += er32(BPRC);
4185 adapter->stats.mprc += er32(MPRC);
4186 adapter->stats.roc += er32(ROC);
4187
Auke Kokbc7f75f2007-09-17 12:30:59 -07004188 adapter->stats.mpc += er32(MPC);
Bruce Allana4f58f52009-06-02 11:29:18 +00004189
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004190 /* Half-duplex statistics */
4191 if (adapter->link_duplex == HALF_DUPLEX) {
4192 if (adapter->flags2 & FLAG2_HAS_PHY_STATS) {
4193 e1000e_update_phy_stats(adapter);
4194 } else {
4195 adapter->stats.scc += er32(SCC);
4196 adapter->stats.ecol += er32(ECOL);
4197 adapter->stats.mcc += er32(MCC);
4198 adapter->stats.latecol += er32(LATECOL);
4199 adapter->stats.dc += er32(DC);
Bruce Allana4f58f52009-06-02 11:29:18 +00004200
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004201 hw->mac.collision_delta = er32(COLC);
Bruce Allana4f58f52009-06-02 11:29:18 +00004202
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004203 if ((hw->mac.type != e1000_82574) &&
4204 (hw->mac.type != e1000_82583))
4205 adapter->stats.tncrs += er32(TNCRS);
4206 }
4207 adapter->stats.colc += hw->mac.collision_delta;
Bruce Allana4f58f52009-06-02 11:29:18 +00004208 }
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004209
Auke Kokbc7f75f2007-09-17 12:30:59 -07004210 adapter->stats.xonrxc += er32(XONRXC);
4211 adapter->stats.xontxc += er32(XONTXC);
4212 adapter->stats.xoffrxc += er32(XOFFRXC);
4213 adapter->stats.xofftxc += er32(XOFFTXC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004214 adapter->stats.gptc += er32(GPTC);
Bruce Allan7c257692008-04-23 11:09:00 -07004215 adapter->stats.gotc += er32(GOTCL);
4216 er32(GOTCH); /* Clear gotc */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004217 adapter->stats.rnbc += er32(RNBC);
4218 adapter->stats.ruc += er32(RUC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004219
4220 adapter->stats.mptc += er32(MPTC);
4221 adapter->stats.bptc += er32(BPTC);
4222
4223 /* used for adaptive IFS */
4224
4225 hw->mac.tx_packet_delta = er32(TPT);
4226 adapter->stats.tpt += hw->mac.tx_packet_delta;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004227
4228 adapter->stats.algnerrc += er32(ALGNERRC);
4229 adapter->stats.rxerrc += er32(RXERRC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004230 adapter->stats.cexterr += er32(CEXTERR);
4231 adapter->stats.tsctc += er32(TSCTC);
4232 adapter->stats.tsctfc += er32(TSCTFC);
4233
Auke Kokbc7f75f2007-09-17 12:30:59 -07004234 /* Fill out the OS statistics structure */
Ajit Khaparde7274c202009-10-07 02:44:26 +00004235 netdev->stats.multicast = adapter->stats.mprc;
4236 netdev->stats.collisions = adapter->stats.colc;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004237
4238 /* Rx Errors */
4239
Bruce Allanad680762008-03-28 09:15:03 -07004240 /*
4241 * RLEC on some newer hardware can be incorrect so build
4242 * our own version based on RUC and ROC
4243 */
Ajit Khaparde7274c202009-10-07 02:44:26 +00004244 netdev->stats.rx_errors = adapter->stats.rxerrc +
Auke Kokbc7f75f2007-09-17 12:30:59 -07004245 adapter->stats.crcerrs + adapter->stats.algnerrc +
4246 adapter->stats.ruc + adapter->stats.roc +
4247 adapter->stats.cexterr;
Ajit Khaparde7274c202009-10-07 02:44:26 +00004248 netdev->stats.rx_length_errors = adapter->stats.ruc +
Auke Kokbc7f75f2007-09-17 12:30:59 -07004249 adapter->stats.roc;
Ajit Khaparde7274c202009-10-07 02:44:26 +00004250 netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
4251 netdev->stats.rx_frame_errors = adapter->stats.algnerrc;
4252 netdev->stats.rx_missed_errors = adapter->stats.mpc;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004253
4254 /* Tx Errors */
Ajit Khaparde7274c202009-10-07 02:44:26 +00004255 netdev->stats.tx_errors = adapter->stats.ecol +
Auke Kokbc7f75f2007-09-17 12:30:59 -07004256 adapter->stats.latecol;
Ajit Khaparde7274c202009-10-07 02:44:26 +00004257 netdev->stats.tx_aborted_errors = adapter->stats.ecol;
4258 netdev->stats.tx_window_errors = adapter->stats.latecol;
4259 netdev->stats.tx_carrier_errors = adapter->stats.tncrs;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004260
4261 /* Tx Dropped needs to be maintained elsewhere */
4262
Auke Kokbc7f75f2007-09-17 12:30:59 -07004263 /* Management Stats */
4264 adapter->stats.mgptc += er32(MGTPTC);
4265 adapter->stats.mgprc += er32(MGTPRC);
4266 adapter->stats.mgpdc += er32(MGTPDC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004267}
4268
Bruce Allan7c257692008-04-23 11:09:00 -07004269/**
4270 * e1000_phy_read_status - Update the PHY register status snapshot
4271 * @adapter: board private structure
4272 **/
4273static void e1000_phy_read_status(struct e1000_adapter *adapter)
4274{
4275 struct e1000_hw *hw = &adapter->hw;
4276 struct e1000_phy_regs *phy = &adapter->phy_regs;
Bruce Allan7c257692008-04-23 11:09:00 -07004277
4278 if ((er32(STATUS) & E1000_STATUS_LU) &&
4279 (adapter->hw.phy.media_type == e1000_media_type_copper)) {
Bruce Allan90da0662011-01-06 07:02:53 +00004280 int ret_val;
4281
Bruce Allan7c257692008-04-23 11:09:00 -07004282 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr);
4283 ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr);
4284 ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise);
4285 ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa);
4286 ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion);
4287 ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000);
4288 ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000);
4289 ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus);
4290 if (ret_val)
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004291 e_warn("Error reading PHY register\n");
Bruce Allan7c257692008-04-23 11:09:00 -07004292 } else {
4293 /*
4294 * Do not read PHY registers if link is not up
4295 * Set values to typical power-on defaults
4296 */
4297 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX);
4298 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL |
4299 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE |
4300 BMSR_ERCAP);
4301 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP |
4302 ADVERTISE_ALL | ADVERTISE_CSMA);
4303 phy->lpa = 0;
4304 phy->expansion = EXPANSION_ENABLENPAGE;
4305 phy->ctrl1000 = ADVERTISE_1000FULL;
4306 phy->stat1000 = 0;
4307 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF);
4308 }
Bruce Allan7c257692008-04-23 11:09:00 -07004309}
4310
Auke Kokbc7f75f2007-09-17 12:30:59 -07004311static void e1000_print_link_info(struct e1000_adapter *adapter)
4312{
Auke Kokbc7f75f2007-09-17 12:30:59 -07004313 struct e1000_hw *hw = &adapter->hw;
4314 u32 ctrl = er32(CTRL);
4315
Bruce Allan8f12fe82008-11-21 16:54:43 -08004316 /* Link status message must follow this format for user tools */
Jeff Kirsheref456f82011-11-03 11:40:28 +00004317 printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n",
4318 adapter->netdev->name,
4319 adapter->link_speed,
4320 adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half",
4321 (ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE) ? "Rx/Tx" :
4322 (ctrl & E1000_CTRL_RFCE) ? "Rx" :
4323 (ctrl & E1000_CTRL_TFCE) ? "Tx" : "None");
Auke Kokbc7f75f2007-09-17 12:30:59 -07004324}
4325
Bruce Allan0c6bdb32010-06-17 18:58:43 +00004326static bool e1000e_has_link(struct e1000_adapter *adapter)
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004327{
4328 struct e1000_hw *hw = &adapter->hw;
Rusty Russell3db1cd52011-12-19 13:56:45 +00004329 bool link_active = false;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004330 s32 ret_val = 0;
4331
4332 /*
4333 * get_link_status is set on LSC (link status) interrupt or
4334 * Rx sequence error interrupt. get_link_status will stay
4335 * false until the check_for_link establishes link
4336 * for copper adapters ONLY
4337 */
4338 switch (hw->phy.media_type) {
4339 case e1000_media_type_copper:
4340 if (hw->mac.get_link_status) {
4341 ret_val = hw->mac.ops.check_for_link(hw);
4342 link_active = !hw->mac.get_link_status;
4343 } else {
Rusty Russell3db1cd52011-12-19 13:56:45 +00004344 link_active = true;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004345 }
4346 break;
4347 case e1000_media_type_fiber:
4348 ret_val = hw->mac.ops.check_for_link(hw);
4349 link_active = !!(er32(STATUS) & E1000_STATUS_LU);
4350 break;
4351 case e1000_media_type_internal_serdes:
4352 ret_val = hw->mac.ops.check_for_link(hw);
4353 link_active = adapter->hw.mac.serdes_has_link;
4354 break;
4355 default:
4356 case e1000_media_type_unknown:
4357 break;
4358 }
4359
4360 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) &&
4361 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
4362 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004363 e_info("Gigabit has been disabled, downgrading speed\n");
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004364 }
4365
4366 return link_active;
4367}
4368
4369static void e1000e_enable_receives(struct e1000_adapter *adapter)
4370{
4371 /* make sure the receive unit is started */
4372 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
4373 (adapter->flags & FLAG_RX_RESTART_NOW)) {
4374 struct e1000_hw *hw = &adapter->hw;
4375 u32 rctl = er32(RCTL);
4376 ew32(RCTL, rctl | E1000_RCTL_EN);
4377 adapter->flags &= ~FLAG_RX_RESTART_NOW;
4378 }
4379}
4380
Carolyn Wybornyff10e132010-10-28 00:59:53 +00004381static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter)
4382{
4383 struct e1000_hw *hw = &adapter->hw;
4384
4385 /*
4386 * With 82574 controllers, PHY needs to be checked periodically
4387 * for hung state and reset, if two calls return true
4388 */
4389 if (e1000_check_phy_82574(hw))
4390 adapter->phy_hang_count++;
4391 else
4392 adapter->phy_hang_count = 0;
4393
4394 if (adapter->phy_hang_count > 1) {
4395 adapter->phy_hang_count = 0;
4396 schedule_work(&adapter->reset_task);
4397 }
4398}
4399
Auke Kokbc7f75f2007-09-17 12:30:59 -07004400/**
4401 * e1000_watchdog - Timer Call-back
4402 * @data: pointer to adapter cast into an unsigned long
4403 **/
4404static void e1000_watchdog(unsigned long data)
4405{
4406 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
4407
4408 /* Do the rest outside of interrupt context */
4409 schedule_work(&adapter->watchdog_task);
4410
4411 /* TODO: make this use queue_delayed_work() */
4412}
4413
4414static void e1000_watchdog_task(struct work_struct *work)
4415{
4416 struct e1000_adapter *adapter = container_of(work,
4417 struct e1000_adapter, watchdog_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004418 struct net_device *netdev = adapter->netdev;
4419 struct e1000_mac_info *mac = &adapter->hw.mac;
Bruce Allan75eb0fa2008-11-21 16:53:51 -08004420 struct e1000_phy_info *phy = &adapter->hw.phy;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004421 struct e1000_ring *tx_ring = adapter->tx_ring;
4422 struct e1000_hw *hw = &adapter->hw;
4423 u32 link, tctl;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004424
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00004425 if (test_bit(__E1000_DOWN, &adapter->state))
4426 return;
4427
David S. Millerb405e8d2010-02-04 22:31:41 -08004428 link = e1000e_has_link(adapter);
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004429 if ((netif_carrier_ok(netdev)) && link) {
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004430 /* Cancel scheduled suspend requests. */
4431 pm_runtime_resume(netdev->dev.parent);
4432
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004433 e1000e_enable_receives(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004434 goto link_up;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004435 }
4436
4437 if ((e1000e_enable_tx_pkt_filtering(hw)) &&
4438 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id))
4439 e1000_update_mng_vlan(adapter);
4440
Auke Kokbc7f75f2007-09-17 12:30:59 -07004441 if (link) {
4442 if (!netif_carrier_ok(netdev)) {
Rusty Russell3db1cd52011-12-19 13:56:45 +00004443 bool txb2b = true;
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004444
4445 /* Cancel scheduled suspend requests. */
4446 pm_runtime_resume(netdev->dev.parent);
4447
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004448 /* update snapshot of PHY registers on LSC */
Bruce Allan7c257692008-04-23 11:09:00 -07004449 e1000_phy_read_status(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004450 mac->ops.get_link_up_info(&adapter->hw,
4451 &adapter->link_speed,
4452 &adapter->link_duplex);
4453 e1000_print_link_info(adapter);
Bruce Allanad680762008-03-28 09:15:03 -07004454 /*
Bruce Allanf4187b52008-08-26 18:36:50 -07004455 * On supported PHYs, check for duplex mismatch only
4456 * if link has autonegotiated at 10/100 half
4457 */
4458 if ((hw->phy.type == e1000_phy_igp_3 ||
4459 hw->phy.type == e1000_phy_bm) &&
4460 (hw->mac.autoneg == true) &&
4461 (adapter->link_speed == SPEED_10 ||
4462 adapter->link_speed == SPEED_100) &&
4463 (adapter->link_duplex == HALF_DUPLEX)) {
4464 u16 autoneg_exp;
4465
4466 e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp);
4467
4468 if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS))
Jeff Kirsheref456f82011-11-03 11:40:28 +00004469 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 -07004470 }
4471
Emil Tantilovf49c57e2010-03-24 12:55:02 +00004472 /* adjust timeout factor according to speed/duplex */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004473 adapter->tx_timeout_factor = 1;
4474 switch (adapter->link_speed) {
4475 case SPEED_10:
Rusty Russell3db1cd52011-12-19 13:56:45 +00004476 txb2b = false;
Bruce Allan10f1b492008-08-08 18:36:01 -07004477 adapter->tx_timeout_factor = 16;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004478 break;
4479 case SPEED_100:
Rusty Russell3db1cd52011-12-19 13:56:45 +00004480 txb2b = false;
Bruce Allan4c86e0b2009-11-19 12:35:26 +00004481 adapter->tx_timeout_factor = 10;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004482 break;
4483 }
4484
Bruce Allanad680762008-03-28 09:15:03 -07004485 /*
4486 * workaround: re-program speed mode bit after
4487 * link-up event
4488 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004489 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) &&
4490 !txb2b) {
4491 u32 tarc0;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07004492 tarc0 = er32(TARC(0));
Auke Kokbc7f75f2007-09-17 12:30:59 -07004493 tarc0 &= ~SPEED_MODE_BIT;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07004494 ew32(TARC(0), tarc0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004495 }
4496
Bruce Allanad680762008-03-28 09:15:03 -07004497 /*
4498 * disable TSO for pcie and 10/100 speeds, to avoid
4499 * some hardware issues
4500 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004501 if (!(adapter->flags & FLAG_TSO_FORCE)) {
4502 switch (adapter->link_speed) {
4503 case SPEED_10:
4504 case SPEED_100:
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004505 e_info("10/100 speed: disabling TSO\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07004506 netdev->features &= ~NETIF_F_TSO;
4507 netdev->features &= ~NETIF_F_TSO6;
4508 break;
4509 case SPEED_1000:
4510 netdev->features |= NETIF_F_TSO;
4511 netdev->features |= NETIF_F_TSO6;
4512 break;
4513 default:
4514 /* oops */
4515 break;
4516 }
4517 }
4518
Bruce Allanad680762008-03-28 09:15:03 -07004519 /*
4520 * enable transmits in the hardware, need to do this
4521 * after setting TARC(0)
4522 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004523 tctl = er32(TCTL);
4524 tctl |= E1000_TCTL_EN;
4525 ew32(TCTL, tctl);
4526
Bruce Allan75eb0fa2008-11-21 16:53:51 -08004527 /*
4528 * Perform any post-link-up configuration before
4529 * reporting link up.
4530 */
4531 if (phy->ops.cfg_on_link_up)
4532 phy->ops.cfg_on_link_up(hw);
4533
Auke Kokbc7f75f2007-09-17 12:30:59 -07004534 netif_carrier_on(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004535
4536 if (!test_bit(__E1000_DOWN, &adapter->state))
4537 mod_timer(&adapter->phy_info_timer,
4538 round_jiffies(jiffies + 2 * HZ));
Auke Kokbc7f75f2007-09-17 12:30:59 -07004539 }
4540 } else {
4541 if (netif_carrier_ok(netdev)) {
4542 adapter->link_speed = 0;
4543 adapter->link_duplex = 0;
Bruce Allan8f12fe82008-11-21 16:54:43 -08004544 /* Link status message must follow this format */
4545 printk(KERN_INFO "e1000e: %s NIC Link is Down\n",
4546 adapter->netdev->name);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004547 netif_carrier_off(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004548 if (!test_bit(__E1000_DOWN, &adapter->state))
4549 mod_timer(&adapter->phy_info_timer,
4550 round_jiffies(jiffies + 2 * HZ));
4551
4552 if (adapter->flags & FLAG_RX_NEEDS_RESTART)
4553 schedule_work(&adapter->reset_task);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004554 else
4555 pm_schedule_suspend(netdev->dev.parent,
4556 LINK_TIMEOUT);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004557 }
4558 }
4559
4560link_up:
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00004561 spin_lock(&adapter->stats64_lock);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004562 e1000e_update_stats(adapter);
4563
4564 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
4565 adapter->tpt_old = adapter->stats.tpt;
4566 mac->collision_delta = adapter->stats.colc - adapter->colc_old;
4567 adapter->colc_old = adapter->stats.colc;
4568
Bruce Allan7c257692008-04-23 11:09:00 -07004569 adapter->gorc = adapter->stats.gorc - adapter->gorc_old;
4570 adapter->gorc_old = adapter->stats.gorc;
4571 adapter->gotc = adapter->stats.gotc - adapter->gotc_old;
4572 adapter->gotc_old = adapter->stats.gotc;
Flavio Leitner2084b112011-04-05 04:27:43 +00004573 spin_unlock(&adapter->stats64_lock);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004574
4575 e1000e_update_adaptive(&adapter->hw);
4576
Bruce Allan90da0662011-01-06 07:02:53 +00004577 if (!netif_carrier_ok(netdev) &&
4578 (e1000_desc_unused(tx_ring) + 1 < tx_ring->count)) {
4579 /*
4580 * We've lost link, so the controller stops DMA,
4581 * but we've got queued Tx work that's never going
4582 * to get done, so reset controller to flush Tx.
4583 * (Do the reset outside of interrupt context).
4584 */
Bruce Allan90da0662011-01-06 07:02:53 +00004585 schedule_work(&adapter->reset_task);
4586 /* return immediately since reset is imminent */
4587 return;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004588 }
4589
Jesse Brandeburgeab2abf2010-05-04 22:26:03 +00004590 /* Simple mode for Interrupt Throttle Rate (ITR) */
4591 if (adapter->itr_setting == 4) {
4592 /*
4593 * Symmetric Tx/Rx gets a reduced ITR=2000;
4594 * Total asymmetrical Tx or Rx gets ITR=8000;
4595 * everyone else is between 2000-8000.
4596 */
4597 u32 goc = (adapter->gotc + adapter->gorc) / 10000;
4598 u32 dif = (adapter->gotc > adapter->gorc ?
4599 adapter->gotc - adapter->gorc :
4600 adapter->gorc - adapter->gotc) / 10000;
4601 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
4602
Matthew Vick22a4cca2012-07-12 00:02:42 +00004603 e1000e_write_itr(adapter, itr);
Jesse Brandeburgeab2abf2010-05-04 22:26:03 +00004604 }
4605
Bruce Allanad680762008-03-28 09:15:03 -07004606 /* Cause software interrupt to ensure Rx ring is cleaned */
Bruce Allan4662e822008-08-26 18:37:06 -07004607 if (adapter->msix_entries)
4608 ew32(ICS, adapter->rx_ring->ims_val);
4609 else
4610 ew32(ICS, E1000_ICS_RXDMT0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004611
Jesse Brandeburg713b3c92011-02-02 10:19:50 +00004612 /* flush pending descriptors to memory before detecting Tx hang */
4613 e1000e_flush_descriptors(adapter);
4614
Auke Kokbc7f75f2007-09-17 12:30:59 -07004615 /* Force detection of hung controller every watchdog period */
Rusty Russell3db1cd52011-12-19 13:56:45 +00004616 adapter->detect_tx_hung = true;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004617
Bruce Allanad680762008-03-28 09:15:03 -07004618 /*
4619 * With 82571 controllers, LAA may be overwritten due to controller
4620 * reset from the other port. Set the appropriate LAA in RAR[0]
4621 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004622 if (e1000e_get_laa_state_82571(hw))
Bruce Allan69e1e012012-04-14 03:28:50 +00004623 hw->mac.ops.rar_set(hw, adapter->hw.mac.addr, 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004624
Carolyn Wybornyff10e132010-10-28 00:59:53 +00004625 if (adapter->flags2 & FLAG2_CHECK_PHY_HANG)
4626 e1000e_check_82574_phy_workaround(adapter);
4627
Auke Kokbc7f75f2007-09-17 12:30:59 -07004628 /* Reset the timer */
4629 if (!test_bit(__E1000_DOWN, &adapter->state))
4630 mod_timer(&adapter->watchdog_timer,
4631 round_jiffies(jiffies + 2 * HZ));
4632}
4633
4634#define E1000_TX_FLAGS_CSUM 0x00000001
4635#define E1000_TX_FLAGS_VLAN 0x00000002
4636#define E1000_TX_FLAGS_TSO 0x00000004
4637#define E1000_TX_FLAGS_IPV4 0x00000008
Ben Greear943146d2012-02-11 15:39:40 +00004638#define E1000_TX_FLAGS_NO_FCS 0x00000010
Auke Kokbc7f75f2007-09-17 12:30:59 -07004639#define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
4640#define E1000_TX_FLAGS_VLAN_SHIFT 16
4641
Bruce Allan55aa6982011-12-16 00:45:45 +00004642static int e1000_tso(struct e1000_ring *tx_ring, struct sk_buff *skb)
Auke Kokbc7f75f2007-09-17 12:30:59 -07004643{
Auke Kokbc7f75f2007-09-17 12:30:59 -07004644 struct e1000_context_desc *context_desc;
4645 struct e1000_buffer *buffer_info;
4646 unsigned int i;
4647 u32 cmd_length = 0;
4648 u16 ipcse = 0, tucse, mss;
4649 u8 ipcss, ipcso, tucss, tucso, hdr_len;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004650
Bruce Allan3d5e33c2009-11-20 23:27:03 +00004651 if (!skb_is_gso(skb))
4652 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004653
Bruce Allan3d5e33c2009-11-20 23:27:03 +00004654 if (skb_header_cloned(skb)) {
Bruce Allan90da0662011-01-06 07:02:53 +00004655 int err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
4656
Bruce Allan3d5e33c2009-11-20 23:27:03 +00004657 if (err)
4658 return err;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004659 }
4660
Bruce Allan3d5e33c2009-11-20 23:27:03 +00004661 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4662 mss = skb_shinfo(skb)->gso_size;
4663 if (skb->protocol == htons(ETH_P_IP)) {
4664 struct iphdr *iph = ip_hdr(skb);
4665 iph->tot_len = 0;
4666 iph->check = 0;
4667 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
4668 0, IPPROTO_TCP, 0);
4669 cmd_length = E1000_TXD_CMD_IP;
4670 ipcse = skb_transport_offset(skb) - 1;
Sridhar Samudrala8e1e8a42010-01-23 02:02:21 -08004671 } else if (skb_is_gso_v6(skb)) {
Bruce Allan3d5e33c2009-11-20 23:27:03 +00004672 ipv6_hdr(skb)->payload_len = 0;
4673 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
4674 &ipv6_hdr(skb)->daddr,
4675 0, IPPROTO_TCP, 0);
4676 ipcse = 0;
4677 }
4678 ipcss = skb_network_offset(skb);
4679 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
4680 tucss = skb_transport_offset(skb);
4681 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
4682 tucse = 0;
4683
4684 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
4685 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
4686
4687 i = tx_ring->next_to_use;
4688 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
4689 buffer_info = &tx_ring->buffer_info[i];
4690
4691 context_desc->lower_setup.ip_fields.ipcss = ipcss;
4692 context_desc->lower_setup.ip_fields.ipcso = ipcso;
4693 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
4694 context_desc->upper_setup.tcp_fields.tucss = tucss;
4695 context_desc->upper_setup.tcp_fields.tucso = tucso;
4696 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
4697 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
4698 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
4699 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
4700
4701 buffer_info->time_stamp = jiffies;
4702 buffer_info->next_to_watch = i;
4703
4704 i++;
4705 if (i == tx_ring->count)
4706 i = 0;
4707 tx_ring->next_to_use = i;
4708
4709 return 1;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004710}
4711
Bruce Allan55aa6982011-12-16 00:45:45 +00004712static bool e1000_tx_csum(struct e1000_ring *tx_ring, struct sk_buff *skb)
Auke Kokbc7f75f2007-09-17 12:30:59 -07004713{
Bruce Allan55aa6982011-12-16 00:45:45 +00004714 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004715 struct e1000_context_desc *context_desc;
4716 struct e1000_buffer *buffer_info;
4717 unsigned int i;
4718 u8 css;
Dave Grahamaf807c82008-10-09 14:28:58 -07004719 u32 cmd_len = E1000_TXD_CMD_DEXT;
Arthur Jones5f66f202009-03-19 01:13:08 +00004720 __be16 protocol;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004721
Dave Grahamaf807c82008-10-09 14:28:58 -07004722 if (skb->ip_summed != CHECKSUM_PARTIAL)
4723 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004724
Arthur Jones5f66f202009-03-19 01:13:08 +00004725 if (skb->protocol == cpu_to_be16(ETH_P_8021Q))
4726 protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto;
4727 else
4728 protocol = skb->protocol;
4729
Arthur Jones3f518392009-03-20 15:56:35 -07004730 switch (protocol) {
Harvey Harrison09640e62009-02-01 00:45:17 -08004731 case cpu_to_be16(ETH_P_IP):
Dave Grahamaf807c82008-10-09 14:28:58 -07004732 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
4733 cmd_len |= E1000_TXD_CMD_TCP;
4734 break;
Harvey Harrison09640e62009-02-01 00:45:17 -08004735 case cpu_to_be16(ETH_P_IPV6):
Dave Grahamaf807c82008-10-09 14:28:58 -07004736 /* XXX not handling all IPV6 headers */
4737 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
4738 cmd_len |= E1000_TXD_CMD_TCP;
4739 break;
4740 default:
4741 if (unlikely(net_ratelimit()))
Arthur Jones5f66f202009-03-19 01:13:08 +00004742 e_warn("checksum_partial proto=%x!\n",
4743 be16_to_cpu(protocol));
Dave Grahamaf807c82008-10-09 14:28:58 -07004744 break;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004745 }
4746
Michał Mirosław0d0b1672010-12-14 15:24:08 +00004747 css = skb_checksum_start_offset(skb);
Dave Grahamaf807c82008-10-09 14:28:58 -07004748
4749 i = tx_ring->next_to_use;
4750 buffer_info = &tx_ring->buffer_info[i];
4751 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
4752
4753 context_desc->lower_setup.ip_config = 0;
4754 context_desc->upper_setup.tcp_fields.tucss = css;
4755 context_desc->upper_setup.tcp_fields.tucso =
4756 css + skb->csum_offset;
4757 context_desc->upper_setup.tcp_fields.tucse = 0;
4758 context_desc->tcp_seg_setup.data = 0;
4759 context_desc->cmd_and_length = cpu_to_le32(cmd_len);
4760
4761 buffer_info->time_stamp = jiffies;
4762 buffer_info->next_to_watch = i;
4763
4764 i++;
4765 if (i == tx_ring->count)
4766 i = 0;
4767 tx_ring->next_to_use = i;
4768
4769 return 1;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004770}
4771
4772#define E1000_MAX_PER_TXD 8192
4773#define E1000_MAX_TXD_PWR 12
4774
Bruce Allan55aa6982011-12-16 00:45:45 +00004775static int e1000_tx_map(struct e1000_ring *tx_ring, struct sk_buff *skb,
4776 unsigned int first, unsigned int max_per_txd,
4777 unsigned int nr_frags, unsigned int mss)
Auke Kokbc7f75f2007-09-17 12:30:59 -07004778{
Bruce Allan55aa6982011-12-16 00:45:45 +00004779 struct e1000_adapter *adapter = tx_ring->adapter;
Alexander Duyck03b13202009-12-02 16:45:31 +00004780 struct pci_dev *pdev = adapter->pdev;
Alexander Duyck1b7719c2009-03-19 01:12:50 +00004781 struct e1000_buffer *buffer_info;
Jesse Brandeburg8ddc9512009-03-02 16:02:53 -08004782 unsigned int len = skb_headlen(skb);
Alexander Duyck03b13202009-12-02 16:45:31 +00004783 unsigned int offset = 0, size, count = 0, i;
Tom Herbert9ed318d2010-05-05 14:02:27 +00004784 unsigned int f, bytecount, segs;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004785
4786 i = tx_ring->next_to_use;
4787
4788 while (len) {
Alexander Duyck1b7719c2009-03-19 01:12:50 +00004789 buffer_info = &tx_ring->buffer_info[i];
Auke Kokbc7f75f2007-09-17 12:30:59 -07004790 size = min(len, max_per_txd);
4791
Auke Kokbc7f75f2007-09-17 12:30:59 -07004792 buffer_info->length = size;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004793 buffer_info->time_stamp = jiffies;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004794 buffer_info->next_to_watch = i;
Nick Nunley0be3f552010-04-27 13:09:05 +00004795 buffer_info->dma = dma_map_single(&pdev->dev,
4796 skb->data + offset,
Bruce Allanaf667a22010-12-31 06:10:01 +00004797 size, DMA_TO_DEVICE);
Alexander Duyck03b13202009-12-02 16:45:31 +00004798 buffer_info->mapped_as_page = false;
Nick Nunley0be3f552010-04-27 13:09:05 +00004799 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
Alexander Duyck03b13202009-12-02 16:45:31 +00004800 goto dma_error;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004801
4802 len -= size;
4803 offset += size;
Alexander Duyck03b13202009-12-02 16:45:31 +00004804 count++;
Alexander Duyck1b7719c2009-03-19 01:12:50 +00004805
4806 if (len) {
4807 i++;
4808 if (i == tx_ring->count)
4809 i = 0;
4810 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07004811 }
4812
4813 for (f = 0; f < nr_frags; f++) {
Eric Dumazet9e903e02011-10-18 21:00:24 +00004814 const struct skb_frag_struct *frag;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004815
4816 frag = &skb_shinfo(skb)->frags[f];
Eric Dumazet9e903e02011-10-18 21:00:24 +00004817 len = skb_frag_size(frag);
Ian Campbell877749b2011-08-29 23:18:26 +00004818 offset = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004819
4820 while (len) {
Alexander Duyck1b7719c2009-03-19 01:12:50 +00004821 i++;
4822 if (i == tx_ring->count)
4823 i = 0;
4824
Auke Kokbc7f75f2007-09-17 12:30:59 -07004825 buffer_info = &tx_ring->buffer_info[i];
4826 size = min(len, max_per_txd);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004827
4828 buffer_info->length = size;
4829 buffer_info->time_stamp = jiffies;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004830 buffer_info->next_to_watch = i;
Ian Campbell877749b2011-08-29 23:18:26 +00004831 buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag,
4832 offset, size, DMA_TO_DEVICE);
Alexander Duyck03b13202009-12-02 16:45:31 +00004833 buffer_info->mapped_as_page = true;
Nick Nunley0be3f552010-04-27 13:09:05 +00004834 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
Alexander Duyck03b13202009-12-02 16:45:31 +00004835 goto dma_error;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004836
4837 len -= size;
4838 offset += size;
4839 count++;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004840 }
4841 }
4842
Bruce Allanaf667a22010-12-31 06:10:01 +00004843 segs = skb_shinfo(skb)->gso_segs ? : 1;
Tom Herbert9ed318d2010-05-05 14:02:27 +00004844 /* multiply data chunks by size of headers */
4845 bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len;
4846
Auke Kokbc7f75f2007-09-17 12:30:59 -07004847 tx_ring->buffer_info[i].skb = skb;
Tom Herbert9ed318d2010-05-05 14:02:27 +00004848 tx_ring->buffer_info[i].segs = segs;
4849 tx_ring->buffer_info[i].bytecount = bytecount;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004850 tx_ring->buffer_info[first].next_to_watch = i;
4851
4852 return count;
Alexander Duyck03b13202009-12-02 16:45:31 +00004853
4854dma_error:
Bruce Allanaf667a22010-12-31 06:10:01 +00004855 dev_err(&pdev->dev, "Tx DMA map failed\n");
Alexander Duyck03b13202009-12-02 16:45:31 +00004856 buffer_info->dma = 0;
Roel Kluinc1fa3472010-01-19 14:21:45 +00004857 if (count)
Alexander Duyck03b13202009-12-02 16:45:31 +00004858 count--;
Roel Kluinc1fa3472010-01-19 14:21:45 +00004859
4860 while (count--) {
Bruce Allanaf667a22010-12-31 06:10:01 +00004861 if (i == 0)
Alexander Duyck03b13202009-12-02 16:45:31 +00004862 i += tx_ring->count;
Roel Kluinc1fa3472010-01-19 14:21:45 +00004863 i--;
Alexander Duyck03b13202009-12-02 16:45:31 +00004864 buffer_info = &tx_ring->buffer_info[i];
Bruce Allan55aa6982011-12-16 00:45:45 +00004865 e1000_put_txbuf(tx_ring, buffer_info);
Alexander Duyck03b13202009-12-02 16:45:31 +00004866 }
4867
4868 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004869}
4870
Bruce Allan55aa6982011-12-16 00:45:45 +00004871static void e1000_tx_queue(struct e1000_ring *tx_ring, int tx_flags, int count)
Auke Kokbc7f75f2007-09-17 12:30:59 -07004872{
Bruce Allan55aa6982011-12-16 00:45:45 +00004873 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004874 struct e1000_tx_desc *tx_desc = NULL;
4875 struct e1000_buffer *buffer_info;
4876 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
4877 unsigned int i;
4878
4879 if (tx_flags & E1000_TX_FLAGS_TSO) {
4880 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
4881 E1000_TXD_CMD_TSE;
4882 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
4883
4884 if (tx_flags & E1000_TX_FLAGS_IPV4)
4885 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
4886 }
4887
4888 if (tx_flags & E1000_TX_FLAGS_CSUM) {
4889 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
4890 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
4891 }
4892
4893 if (tx_flags & E1000_TX_FLAGS_VLAN) {
4894 txd_lower |= E1000_TXD_CMD_VLE;
4895 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
4896 }
4897
Ben Greear943146d2012-02-11 15:39:40 +00004898 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
4899 txd_lower &= ~(E1000_TXD_CMD_IFCS);
4900
Auke Kokbc7f75f2007-09-17 12:30:59 -07004901 i = tx_ring->next_to_use;
4902
Bruce Allan36b973d2010-11-24 07:42:43 +00004903 do {
Auke Kokbc7f75f2007-09-17 12:30:59 -07004904 buffer_info = &tx_ring->buffer_info[i];
4905 tx_desc = E1000_TX_DESC(*tx_ring, i);
4906 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
4907 tx_desc->lower.data =
4908 cpu_to_le32(txd_lower | buffer_info->length);
4909 tx_desc->upper.data = cpu_to_le32(txd_upper);
4910
4911 i++;
4912 if (i == tx_ring->count)
4913 i = 0;
Bruce Allan36b973d2010-11-24 07:42:43 +00004914 } while (--count > 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004915
4916 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
4917
Ben Greear943146d2012-02-11 15:39:40 +00004918 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */
4919 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
4920 tx_desc->lower.data &= ~(cpu_to_le32(E1000_TXD_CMD_IFCS));
4921
Bruce Allanad680762008-03-28 09:15:03 -07004922 /*
4923 * Force memory writes to complete before letting h/w
Auke Kokbc7f75f2007-09-17 12:30:59 -07004924 * know there are new descriptors to fetch. (Only
4925 * applicable for weak-ordered memory model archs,
Bruce Allanad680762008-03-28 09:15:03 -07004926 * such as IA-64).
4927 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004928 wmb();
4929
4930 tx_ring->next_to_use = i;
David S. Miller823dcd22011-08-20 10:39:12 -07004931
4932 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
Bruce Allan55aa6982011-12-16 00:45:45 +00004933 e1000e_update_tdt_wa(tx_ring, i);
David S. Miller823dcd22011-08-20 10:39:12 -07004934 else
Bruce Allanc5083cf2011-12-16 00:45:40 +00004935 writel(i, tx_ring->tail);
David S. Miller823dcd22011-08-20 10:39:12 -07004936
Bruce Allanad680762008-03-28 09:15:03 -07004937 /*
4938 * we need this if more than one processor can write to our tail
4939 * at a time, it synchronizes IO on IA64/Altix systems
4940 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004941 mmiowb();
4942}
4943
4944#define MINIMUM_DHCP_PACKET_SIZE 282
4945static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
4946 struct sk_buff *skb)
4947{
4948 struct e1000_hw *hw = &adapter->hw;
4949 u16 length, offset;
4950
4951 if (vlan_tx_tag_present(skb)) {
Joe Perches8e95a202009-12-03 07:58:21 +00004952 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) &&
4953 (adapter->hw.mng_cookie.status &
Auke Kokbc7f75f2007-09-17 12:30:59 -07004954 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
4955 return 0;
4956 }
4957
4958 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE)
4959 return 0;
4960
4961 if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP))
4962 return 0;
4963
4964 {
4965 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14);
4966 struct udphdr *udp;
4967
4968 if (ip->protocol != IPPROTO_UDP)
4969 return 0;
4970
4971 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
4972 if (ntohs(udp->dest) != 67)
4973 return 0;
4974
4975 offset = (u8 *)udp + 8 - skb->data;
4976 length = skb->len - offset;
4977 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length);
4978 }
4979
4980 return 0;
4981}
4982
Bruce Allan55aa6982011-12-16 00:45:45 +00004983static int __e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size)
Auke Kokbc7f75f2007-09-17 12:30:59 -07004984{
Bruce Allan55aa6982011-12-16 00:45:45 +00004985 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004986
Bruce Allan55aa6982011-12-16 00:45:45 +00004987 netif_stop_queue(adapter->netdev);
Bruce Allanad680762008-03-28 09:15:03 -07004988 /*
4989 * Herbert's original patch had:
Auke Kokbc7f75f2007-09-17 12:30:59 -07004990 * smp_mb__after_netif_stop_queue();
Bruce Allanad680762008-03-28 09:15:03 -07004991 * but since that doesn't exist yet, just open code it.
4992 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004993 smp_mb();
4994
Bruce Allanad680762008-03-28 09:15:03 -07004995 /*
4996 * We need to check again in a case another CPU has just
4997 * made room available.
4998 */
Bruce Allan55aa6982011-12-16 00:45:45 +00004999 if (e1000_desc_unused(tx_ring) < size)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005000 return -EBUSY;
5001
5002 /* A reprieve! */
Bruce Allan55aa6982011-12-16 00:45:45 +00005003 netif_start_queue(adapter->netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005004 ++adapter->restart_queue;
5005 return 0;
5006}
5007
Bruce Allan55aa6982011-12-16 00:45:45 +00005008static int e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005009{
Bruce Allan55aa6982011-12-16 00:45:45 +00005010 if (e1000_desc_unused(tx_ring) >= size)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005011 return 0;
Bruce Allan55aa6982011-12-16 00:45:45 +00005012 return __e1000_maybe_stop_tx(tx_ring, size);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005013}
5014
Bruce Allan0e15df42012-01-31 06:37:11 +00005015#define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1)
Stephen Hemminger3b29a562009-08-31 19:50:55 +00005016static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
5017 struct net_device *netdev)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005018{
5019 struct e1000_adapter *adapter = netdev_priv(netdev);
5020 struct e1000_ring *tx_ring = adapter->tx_ring;
5021 unsigned int first;
5022 unsigned int max_per_txd = E1000_MAX_PER_TXD;
5023 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
5024 unsigned int tx_flags = 0;
Eric Dumazete743d312010-04-14 15:59:40 -07005025 unsigned int len = skb_headlen(skb);
Auke Kok4e6c7092007-10-05 14:15:23 -07005026 unsigned int nr_frags;
5027 unsigned int mss;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005028 int count = 0;
5029 int tso;
5030 unsigned int f;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005031
5032 if (test_bit(__E1000_DOWN, &adapter->state)) {
5033 dev_kfree_skb_any(skb);
5034 return NETDEV_TX_OK;
5035 }
5036
5037 if (skb->len <= 0) {
5038 dev_kfree_skb_any(skb);
5039 return NETDEV_TX_OK;
5040 }
5041
5042 mss = skb_shinfo(skb)->gso_size;
Bruce Allanad680762008-03-28 09:15:03 -07005043 /*
5044 * The controller does a simple calculation to
Auke Kokbc7f75f2007-09-17 12:30:59 -07005045 * make sure there is enough room in the FIFO before
5046 * initiating the DMA for each buffer. The calc is:
5047 * 4 = ceil(buffer len/mss). To make sure we don't
5048 * overrun the FIFO, adjust the max buffer len if mss
Bruce Allanad680762008-03-28 09:15:03 -07005049 * drops.
5050 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005051 if (mss) {
5052 u8 hdr_len;
5053 max_per_txd = min(mss << 2, max_per_txd);
5054 max_txd_pwr = fls(max_per_txd) - 1;
5055
Bruce Allanad680762008-03-28 09:15:03 -07005056 /*
5057 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
5058 * points to just header, pull a few bytes of payload from
5059 * frags into skb->data
5060 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005061 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
Bruce Allanad680762008-03-28 09:15:03 -07005062 /*
5063 * we do this workaround for ES2LAN, but it is un-necessary,
5064 * avoiding it could save a lot of cycles
5065 */
Auke Kok4e6c7092007-10-05 14:15:23 -07005066 if (skb->data_len && (hdr_len == len)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07005067 unsigned int pull_size;
5068
Bruce Allana2a5b322012-01-31 06:37:17 +00005069 pull_size = min_t(unsigned int, 4, skb->data_len);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005070 if (!__pskb_pull_tail(skb, pull_size)) {
Jeff Kirsher44defeb2008-08-04 17:20:41 -07005071 e_err("__pskb_pull_tail failed.\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07005072 dev_kfree_skb_any(skb);
5073 return NETDEV_TX_OK;
5074 }
Eric Dumazete743d312010-04-14 15:59:40 -07005075 len = skb_headlen(skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005076 }
5077 }
5078
5079 /* reserve a descriptor for the offload context */
5080 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
5081 count++;
5082 count++;
5083
5084 count += TXD_USE_COUNT(len, max_txd_pwr);
5085
5086 nr_frags = skb_shinfo(skb)->nr_frags;
5087 for (f = 0; f < nr_frags; f++)
Eric Dumazet9e903e02011-10-18 21:00:24 +00005088 count += TXD_USE_COUNT(skb_frag_size(&skb_shinfo(skb)->frags[f]),
Auke Kokbc7f75f2007-09-17 12:30:59 -07005089 max_txd_pwr);
5090
5091 if (adapter->hw.mac.tx_pkt_filtering)
5092 e1000_transfer_dhcp_info(adapter, skb);
5093
Bruce Allanad680762008-03-28 09:15:03 -07005094 /*
5095 * need: count + 2 desc gap to keep tail from touching
5096 * head, otherwise try next time
5097 */
Bruce Allan55aa6982011-12-16 00:45:45 +00005098 if (e1000_maybe_stop_tx(tx_ring, count + 2))
Auke Kokbc7f75f2007-09-17 12:30:59 -07005099 return NETDEV_TX_BUSY;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005100
Jesse Grosseab6d182010-10-20 13:56:03 +00005101 if (vlan_tx_tag_present(skb)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07005102 tx_flags |= E1000_TX_FLAGS_VLAN;
5103 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
5104 }
5105
5106 first = tx_ring->next_to_use;
5107
Bruce Allan55aa6982011-12-16 00:45:45 +00005108 tso = e1000_tso(tx_ring, skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005109 if (tso < 0) {
5110 dev_kfree_skb_any(skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005111 return NETDEV_TX_OK;
5112 }
5113
5114 if (tso)
5115 tx_flags |= E1000_TX_FLAGS_TSO;
Bruce Allan55aa6982011-12-16 00:45:45 +00005116 else if (e1000_tx_csum(tx_ring, skb))
Auke Kokbc7f75f2007-09-17 12:30:59 -07005117 tx_flags |= E1000_TX_FLAGS_CSUM;
5118
Bruce Allanad680762008-03-28 09:15:03 -07005119 /*
5120 * Old method was to assume IPv4 packet by default if TSO was enabled.
Auke Kokbc7f75f2007-09-17 12:30:59 -07005121 * 82571 hardware supports TSO capabilities for IPv6 as well...
Bruce Allanad680762008-03-28 09:15:03 -07005122 * no longer assume, we must.
5123 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005124 if (skb->protocol == htons(ETH_P_IP))
5125 tx_flags |= E1000_TX_FLAGS_IPV4;
5126
Ben Greear943146d2012-02-11 15:39:40 +00005127 if (unlikely(skb->no_fcs))
5128 tx_flags |= E1000_TX_FLAGS_NO_FCS;
5129
Lucas De Marchi25985ed2011-03-30 22:57:33 -03005130 /* if count is 0 then mapping error has occurred */
Bruce Allan55aa6982011-12-16 00:45:45 +00005131 count = e1000_tx_map(tx_ring, skb, first, max_per_txd, nr_frags, mss);
Alexander Duyck1b7719c2009-03-19 01:12:50 +00005132 if (count) {
Willem de Bruijn80be3122012-04-27 09:04:05 +00005133 skb_tx_timestamp(skb);
5134
Tom Herbert3f0cfa32011-11-28 16:33:16 +00005135 netdev_sent_queue(netdev, skb->len);
Bruce Allan55aa6982011-12-16 00:45:45 +00005136 e1000_tx_queue(tx_ring, tx_flags, count);
Alexander Duyck1b7719c2009-03-19 01:12:50 +00005137 /* Make sure there is space in the ring for the next send. */
Bruce Allan55aa6982011-12-16 00:45:45 +00005138 e1000_maybe_stop_tx(tx_ring, MAX_SKB_FRAGS + 2);
Alexander Duyck1b7719c2009-03-19 01:12:50 +00005139
5140 } else {
Auke Kokbc7f75f2007-09-17 12:30:59 -07005141 dev_kfree_skb_any(skb);
Alexander Duyck1b7719c2009-03-19 01:12:50 +00005142 tx_ring->buffer_info[first].time_stamp = 0;
5143 tx_ring->next_to_use = first;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005144 }
5145
Auke Kokbc7f75f2007-09-17 12:30:59 -07005146 return NETDEV_TX_OK;
5147}
5148
5149/**
5150 * e1000_tx_timeout - Respond to a Tx Hang
5151 * @netdev: network interface device structure
5152 **/
5153static void e1000_tx_timeout(struct net_device *netdev)
5154{
5155 struct e1000_adapter *adapter = netdev_priv(netdev);
5156
5157 /* Do the reset outside of interrupt context */
5158 adapter->tx_timeout_count++;
5159 schedule_work(&adapter->reset_task);
5160}
5161
5162static void e1000_reset_task(struct work_struct *work)
5163{
5164 struct e1000_adapter *adapter;
5165 adapter = container_of(work, struct e1000_adapter, reset_task);
5166
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00005167 /* don't run the task if already down */
5168 if (test_bit(__E1000_DOWN, &adapter->state))
5169 return;
5170
Carolyn Wybornyaffa9df2010-10-28 00:59:55 +00005171 if (!((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
5172 (adapter->flags & FLAG_RX_RESTART_NOW))) {
5173 e1000e_dump(adapter);
5174 e_err("Reset adapter\n");
5175 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07005176 e1000e_reinit_locked(adapter);
5177}
5178
5179/**
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00005180 * e1000_get_stats64 - Get System Network Statistics
Auke Kokbc7f75f2007-09-17 12:30:59 -07005181 * @netdev: network interface device structure
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00005182 * @stats: rtnl_link_stats64 pointer
Auke Kokbc7f75f2007-09-17 12:30:59 -07005183 *
5184 * Returns the address of the device statistics structure.
Auke Kokbc7f75f2007-09-17 12:30:59 -07005185 **/
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00005186struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev,
5187 struct rtnl_link_stats64 *stats)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005188{
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00005189 struct e1000_adapter *adapter = netdev_priv(netdev);
5190
5191 memset(stats, 0, sizeof(struct rtnl_link_stats64));
5192 spin_lock(&adapter->stats64_lock);
5193 e1000e_update_stats(adapter);
5194 /* Fill out the OS statistics structure */
5195 stats->rx_bytes = adapter->stats.gorc;
5196 stats->rx_packets = adapter->stats.gprc;
5197 stats->tx_bytes = adapter->stats.gotc;
5198 stats->tx_packets = adapter->stats.gptc;
5199 stats->multicast = adapter->stats.mprc;
5200 stats->collisions = adapter->stats.colc;
5201
5202 /* Rx Errors */
5203
5204 /*
5205 * RLEC on some newer hardware can be incorrect so build
5206 * our own version based on RUC and ROC
5207 */
5208 stats->rx_errors = adapter->stats.rxerrc +
5209 adapter->stats.crcerrs + adapter->stats.algnerrc +
5210 adapter->stats.ruc + adapter->stats.roc +
5211 adapter->stats.cexterr;
5212 stats->rx_length_errors = adapter->stats.ruc +
5213 adapter->stats.roc;
5214 stats->rx_crc_errors = adapter->stats.crcerrs;
5215 stats->rx_frame_errors = adapter->stats.algnerrc;
5216 stats->rx_missed_errors = adapter->stats.mpc;
5217
5218 /* Tx Errors */
5219 stats->tx_errors = adapter->stats.ecol +
5220 adapter->stats.latecol;
5221 stats->tx_aborted_errors = adapter->stats.ecol;
5222 stats->tx_window_errors = adapter->stats.latecol;
5223 stats->tx_carrier_errors = adapter->stats.tncrs;
5224
5225 /* Tx Dropped needs to be maintained elsewhere */
5226
5227 spin_unlock(&adapter->stats64_lock);
5228 return stats;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005229}
5230
5231/**
5232 * e1000_change_mtu - Change the Maximum Transfer Unit
5233 * @netdev: network interface device structure
5234 * @new_mtu: new value for maximum frame size
5235 *
5236 * Returns 0 on success, negative on failure
5237 **/
5238static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
5239{
5240 struct e1000_adapter *adapter = netdev_priv(netdev);
5241 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
5242
Bruce Allan2adc55c2009-06-02 11:28:58 +00005243 /* Jumbo frame support */
Bruce Allan2e1706f2012-06-30 20:02:42 +00005244 if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) &&
5245 !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
5246 e_err("Jumbo Frames not supported.\n");
5247 return -EINVAL;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005248 }
5249
Bruce Allan2adc55c2009-06-02 11:28:58 +00005250 /* Supported frame sizes */
5251 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) ||
5252 (max_frame > adapter->max_hw_frame_size)) {
5253 e_err("Unsupported MTU setting\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07005254 return -EINVAL;
5255 }
5256
Bruce Allan2fbe4522012-04-19 03:21:47 +00005257 /* Jumbo frame workaround on 82579 and newer requires CRC be stripped */
5258 if ((adapter->hw.mac.type >= e1000_pch2lan) &&
Bruce Allana1ce6472010-09-22 17:16:40 +00005259 !(adapter->flags2 & FLAG2_CRC_STRIPPING) &&
5260 (new_mtu > ETH_DATA_LEN)) {
Bruce Allan2fbe4522012-04-19 03:21:47 +00005261 e_err("Jumbo Frames not supported on this device when CRC stripping is disabled.\n");
Bruce Allana1ce6472010-09-22 17:16:40 +00005262 return -EINVAL;
5263 }
5264
Auke Kokbc7f75f2007-09-17 12:30:59 -07005265 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
Bruce Allan1bba4382011-03-19 00:27:20 +00005266 usleep_range(1000, 2000);
Bruce Allan610c9922009-11-19 12:35:45 +00005267 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07005268 adapter->max_frame_size = max_frame;
Bruce Allan610c9922009-11-19 12:35:45 +00005269 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu);
5270 netdev->mtu = new_mtu;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005271 if (netif_running(netdev))
5272 e1000e_down(adapter);
5273
Bruce Allanad680762008-03-28 09:15:03 -07005274 /*
5275 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
Auke Kokbc7f75f2007-09-17 12:30:59 -07005276 * means we reserve 2 more, this pushes us to allocate from the next
5277 * larger slab size.
Bruce Allanad680762008-03-28 09:15:03 -07005278 * i.e. RXBUFFER_2048 --> size-4096 slab
Bruce Allan97ac8ca2008-04-29 09:16:05 -07005279 * However with the new *_jumbo_rx* routines, jumbo receives will use
5280 * fragmented skbs
Bruce Allanad680762008-03-28 09:15:03 -07005281 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005282
Jesse Brandeburg99261462010-01-22 22:56:16 +00005283 if (max_frame <= 2048)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005284 adapter->rx_buffer_len = 2048;
5285 else
5286 adapter->rx_buffer_len = 4096;
5287
5288 /* adjust allocation if LPE protects us, and we aren't using SBP */
5289 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
5290 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
5291 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN
Bruce Allanad680762008-03-28 09:15:03 -07005292 + ETH_FCS_LEN;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005293
Auke Kokbc7f75f2007-09-17 12:30:59 -07005294 if (netif_running(netdev))
5295 e1000e_up(adapter);
5296 else
5297 e1000e_reset(adapter);
5298
5299 clear_bit(__E1000_RESETTING, &adapter->state);
5300
5301 return 0;
5302}
5303
5304static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
5305 int cmd)
5306{
5307 struct e1000_adapter *adapter = netdev_priv(netdev);
5308 struct mii_ioctl_data *data = if_mii(ifr);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005309
Jeff Kirsher318a94d2008-03-28 09:15:16 -07005310 if (adapter->hw.phy.media_type != e1000_media_type_copper)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005311 return -EOPNOTSUPP;
5312
5313 switch (cmd) {
5314 case SIOCGMIIPHY:
5315 data->phy_id = adapter->hw.phy.addr;
5316 break;
5317 case SIOCGMIIREG:
Bruce Allanb16a0022009-11-20 23:24:30 +00005318 e1000_phy_read_status(adapter);
5319
Bruce Allan7c257692008-04-23 11:09:00 -07005320 switch (data->reg_num & 0x1F) {
5321 case MII_BMCR:
5322 data->val_out = adapter->phy_regs.bmcr;
5323 break;
5324 case MII_BMSR:
5325 data->val_out = adapter->phy_regs.bmsr;
5326 break;
5327 case MII_PHYSID1:
5328 data->val_out = (adapter->hw.phy.id >> 16);
5329 break;
5330 case MII_PHYSID2:
5331 data->val_out = (adapter->hw.phy.id & 0xFFFF);
5332 break;
5333 case MII_ADVERTISE:
5334 data->val_out = adapter->phy_regs.advertise;
5335 break;
5336 case MII_LPA:
5337 data->val_out = adapter->phy_regs.lpa;
5338 break;
5339 case MII_EXPANSION:
5340 data->val_out = adapter->phy_regs.expansion;
5341 break;
5342 case MII_CTRL1000:
5343 data->val_out = adapter->phy_regs.ctrl1000;
5344 break;
5345 case MII_STAT1000:
5346 data->val_out = adapter->phy_regs.stat1000;
5347 break;
5348 case MII_ESTATUS:
5349 data->val_out = adapter->phy_regs.estatus;
5350 break;
5351 default:
Auke Kokbc7f75f2007-09-17 12:30:59 -07005352 return -EIO;
5353 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07005354 break;
5355 case SIOCSMIIREG:
5356 default:
5357 return -EOPNOTSUPP;
5358 }
5359 return 0;
5360}
5361
5362static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
5363{
5364 switch (cmd) {
5365 case SIOCGMIIPHY:
5366 case SIOCGMIIREG:
5367 case SIOCSMIIREG:
5368 return e1000_mii_ioctl(netdev, ifr, cmd);
5369 default:
5370 return -EOPNOTSUPP;
5371 }
5372}
5373
Bruce Allana4f58f52009-06-02 11:29:18 +00005374static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc)
5375{
5376 struct e1000_hw *hw = &adapter->hw;
5377 u32 i, mac_reg;
Bruce Allan2b6b1682011-05-13 07:20:09 +00005378 u16 phy_reg, wuc_enable;
Bruce Allana4f58f52009-06-02 11:29:18 +00005379 int retval = 0;
5380
5381 /* copy MAC RARs to PHY RARs */
Bruce Alland3738bb2010-06-16 13:27:28 +00005382 e1000_copy_rx_addrs_to_phy_ich8lan(hw);
Bruce Allana4f58f52009-06-02 11:29:18 +00005383
Bruce Allan2b6b1682011-05-13 07:20:09 +00005384 retval = hw->phy.ops.acquire(hw);
5385 if (retval) {
5386 e_err("Could not acquire PHY\n");
5387 return retval;
5388 }
5389
5390 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */
5391 retval = e1000_enable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
5392 if (retval)
Bruce Allan75ce1532012-02-08 02:54:48 +00005393 goto release;
Bruce Allan2b6b1682011-05-13 07:20:09 +00005394
5395 /* copy MAC MTA to PHY MTA - only needed for pchlan */
Bruce Allana4f58f52009-06-02 11:29:18 +00005396 for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) {
5397 mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i);
Bruce Allan2b6b1682011-05-13 07:20:09 +00005398 hw->phy.ops.write_reg_page(hw, BM_MTA(i),
5399 (u16)(mac_reg & 0xFFFF));
5400 hw->phy.ops.write_reg_page(hw, BM_MTA(i) + 1,
5401 (u16)((mac_reg >> 16) & 0xFFFF));
Bruce Allana4f58f52009-06-02 11:29:18 +00005402 }
5403
5404 /* configure PHY Rx Control register */
Bruce Allan2b6b1682011-05-13 07:20:09 +00005405 hw->phy.ops.read_reg_page(&adapter->hw, BM_RCTL, &phy_reg);
Bruce Allana4f58f52009-06-02 11:29:18 +00005406 mac_reg = er32(RCTL);
5407 if (mac_reg & E1000_RCTL_UPE)
5408 phy_reg |= BM_RCTL_UPE;
5409 if (mac_reg & E1000_RCTL_MPE)
5410 phy_reg |= BM_RCTL_MPE;
5411 phy_reg &= ~(BM_RCTL_MO_MASK);
5412 if (mac_reg & E1000_RCTL_MO_3)
5413 phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT)
5414 << BM_RCTL_MO_SHIFT);
5415 if (mac_reg & E1000_RCTL_BAM)
5416 phy_reg |= BM_RCTL_BAM;
5417 if (mac_reg & E1000_RCTL_PMCF)
5418 phy_reg |= BM_RCTL_PMCF;
5419 mac_reg = er32(CTRL);
5420 if (mac_reg & E1000_CTRL_RFCE)
5421 phy_reg |= BM_RCTL_RFCE;
Bruce Allan2b6b1682011-05-13 07:20:09 +00005422 hw->phy.ops.write_reg_page(&adapter->hw, BM_RCTL, phy_reg);
Bruce Allana4f58f52009-06-02 11:29:18 +00005423
5424 /* enable PHY wakeup in MAC register */
5425 ew32(WUFC, wufc);
5426 ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN);
5427
5428 /* configure and enable PHY wakeup in PHY registers */
Bruce Allan2b6b1682011-05-13 07:20:09 +00005429 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUFC, wufc);
5430 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUC, E1000_WUC_PME_EN);
Bruce Allana4f58f52009-06-02 11:29:18 +00005431
5432 /* activate PHY wakeup */
Bruce Allan2b6b1682011-05-13 07:20:09 +00005433 wuc_enable |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT;
5434 retval = e1000_disable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
Bruce Allana4f58f52009-06-02 11:29:18 +00005435 if (retval)
5436 e_err("Could not set PHY Host Wakeup bit\n");
Bruce Allan75ce1532012-02-08 02:54:48 +00005437release:
Bruce Allan94d81862009-11-20 23:25:26 +00005438 hw->phy.ops.release(hw);
Bruce Allana4f58f52009-06-02 11:29:18 +00005439
5440 return retval;
5441}
5442
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005443static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake,
5444 bool runtime)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005445{
5446 struct net_device *netdev = pci_get_drvdata(pdev);
5447 struct e1000_adapter *adapter = netdev_priv(netdev);
5448 struct e1000_hw *hw = &adapter->hw;
5449 u32 ctrl, ctrl_ext, rctl, status;
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005450 /* Runtime suspend should only enable wakeup for link changes */
5451 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005452 int retval = 0;
5453
5454 netif_device_detach(netdev);
5455
5456 if (netif_running(netdev)) {
Bruce Allanbb9e44d2012-03-21 00:39:12 +00005457 int count = E1000_CHECK_RESET_COUNT;
5458
5459 while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
5460 usleep_range(10000, 20000);
5461
Auke Kokbc7f75f2007-09-17 12:30:59 -07005462 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
5463 e1000e_down(adapter);
5464 e1000_free_irq(adapter);
5465 }
Bruce Allan4662e822008-08-26 18:37:06 -07005466 e1000e_reset_interrupt_capability(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005467
5468 retval = pci_save_state(pdev);
5469 if (retval)
5470 return retval;
5471
5472 status = er32(STATUS);
5473 if (status & E1000_STATUS_LU)
5474 wufc &= ~E1000_WUFC_LNKC;
5475
5476 if (wufc) {
5477 e1000_setup_rctl(adapter);
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00005478 e1000e_set_rx_mode(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005479
5480 /* turn on all-multi mode if wake on multicast is enabled */
5481 if (wufc & E1000_WUFC_MC) {
5482 rctl = er32(RCTL);
5483 rctl |= E1000_RCTL_MPE;
5484 ew32(RCTL, rctl);
5485 }
5486
5487 ctrl = er32(CTRL);
5488 /* advertise wake from D3Cold */
5489 #define E1000_CTRL_ADVD3WUC 0x00100000
5490 /* phy power management enable */
5491 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
Bruce Allana4f58f52009-06-02 11:29:18 +00005492 ctrl |= E1000_CTRL_ADVD3WUC;
5493 if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP))
5494 ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005495 ew32(CTRL, ctrl);
5496
Jeff Kirsher318a94d2008-03-28 09:15:16 -07005497 if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
5498 adapter->hw.phy.media_type ==
5499 e1000_media_type_internal_serdes) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07005500 /* keep the laser running in D3 */
5501 ctrl_ext = er32(CTRL_EXT);
Bruce Allan93a23f42009-12-08 07:27:41 +00005502 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005503 ew32(CTRL_EXT, ctrl_ext);
5504 }
5505
Bruce Allan97ac8ca2008-04-29 09:16:05 -07005506 if (adapter->flags & FLAG_IS_ICH)
Bruce Allan99730e42011-05-13 07:19:48 +00005507 e1000_suspend_workarounds_ich8lan(&adapter->hw);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07005508
Auke Kokbc7f75f2007-09-17 12:30:59 -07005509 /* Allow time for pending master requests to run */
5510 e1000e_disable_pcie_master(&adapter->hw);
5511
Bruce Allan82776a42009-08-14 14:35:33 +00005512 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
Bruce Allana4f58f52009-06-02 11:29:18 +00005513 /* enable wakeup by the PHY */
5514 retval = e1000_init_phy_wakeup(adapter, wufc);
5515 if (retval)
5516 return retval;
5517 } else {
5518 /* enable wakeup by the MAC */
5519 ew32(WUFC, wufc);
5520 ew32(WUC, E1000_WUC_PME_EN);
5521 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07005522 } else {
5523 ew32(WUC, 0);
5524 ew32(WUFC, 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005525 }
5526
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005527 *enable_wake = !!wufc;
5528
Auke Kokbc7f75f2007-09-17 12:30:59 -07005529 /* make sure adapter isn't asleep if manageability is enabled */
Bruce Allan82776a42009-08-14 14:35:33 +00005530 if ((adapter->flags & FLAG_MNG_PT_ENABLED) ||
5531 (hw->mac.ops.check_mng_mode(hw)))
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005532 *enable_wake = true;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005533
5534 if (adapter->hw.phy.type == e1000_phy_igp_3)
5535 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw);
5536
Bruce Allanad680762008-03-28 09:15:03 -07005537 /*
5538 * Release control of h/w to f/w. If f/w is AMT enabled, this
5539 * would have already happened in close and is redundant.
5540 */
Bruce Allan31dbe5b2011-01-06 14:29:52 +00005541 e1000e_release_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005542
5543 pci_disable_device(pdev);
5544
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005545 return 0;
5546}
5547
5548static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake)
5549{
5550 if (sleep && wake) {
5551 pci_prepare_to_sleep(pdev);
5552 return;
5553 }
5554
5555 pci_wake_from_d3(pdev, wake);
5556 pci_set_power_state(pdev, PCI_D3hot);
5557}
5558
5559static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep,
5560 bool wake)
5561{
5562 struct net_device *netdev = pci_get_drvdata(pdev);
5563 struct e1000_adapter *adapter = netdev_priv(netdev);
5564
Alexander Duyck005cbdf2008-11-21 16:49:10 -08005565 /*
5566 * The pci-e switch on some quad port adapters will report a
5567 * correctable error when the MAC transitions from D0 to D3. To
5568 * prevent this we need to mask off the correctable errors on the
5569 * downstream port of the pci-e switch.
5570 */
5571 if (adapter->flags & FLAG_IS_QUAD_PORT) {
5572 struct pci_dev *us_dev = pdev->bus->self;
Jon Mason353064d2011-06-27 07:43:47 +00005573 int pos = pci_pcie_cap(us_dev);
Alexander Duyck005cbdf2008-11-21 16:49:10 -08005574 u16 devctl;
5575
5576 pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl);
5577 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL,
5578 (devctl & ~PCI_EXP_DEVCTL_CERE));
5579
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005580 e1000_power_off(pdev, sleep, wake);
Alexander Duyck005cbdf2008-11-21 16:49:10 -08005581
5582 pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl);
5583 } else {
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005584 e1000_power_off(pdev, sleep, wake);
Alexander Duyck005cbdf2008-11-21 16:49:10 -08005585 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07005586}
5587
Bruce Allan6f461f62010-04-27 03:33:04 +00005588#ifdef CONFIG_PCIEASPM
5589static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
5590{
Yinghai Lu9f728f52011-05-12 17:11:47 -07005591 pci_disable_link_state_locked(pdev, state);
Bruce Allan6f461f62010-04-27 03:33:04 +00005592}
5593#else
5594static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
Auke Kok1eae4eb2007-10-31 15:22:00 -07005595{
5596 int pos;
Bruce Allan6f461f62010-04-27 03:33:04 +00005597 u16 reg16;
Auke Kok1eae4eb2007-10-31 15:22:00 -07005598
5599 /*
Bruce Allan6f461f62010-04-27 03:33:04 +00005600 * Both device and parent should have the same ASPM setting.
5601 * Disable ASPM in downstream component first and then upstream.
Auke Kok1eae4eb2007-10-31 15:22:00 -07005602 */
Bruce Allan6f461f62010-04-27 03:33:04 +00005603 pos = pci_pcie_cap(pdev);
5604 pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, &reg16);
5605 reg16 &= ~state;
5606 pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16);
5607
Anton Blanchard0c75ba22010-04-28 21:46:06 +00005608 if (!pdev->bus->self)
5609 return;
5610
Bruce Allan6f461f62010-04-27 03:33:04 +00005611 pos = pci_pcie_cap(pdev->bus->self);
5612 pci_read_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, &reg16);
5613 reg16 &= ~state;
5614 pci_write_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, reg16);
5615}
5616#endif
Bruce Allan78cd29d2011-03-24 03:09:03 +00005617static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
Bruce Allan6f461f62010-04-27 03:33:04 +00005618{
5619 dev_info(&pdev->dev, "Disabling ASPM %s %s\n",
5620 (state & PCIE_LINK_STATE_L0S) ? "L0s" : "",
5621 (state & PCIE_LINK_STATE_L1) ? "L1" : "");
5622
5623 __e1000e_disable_aspm(pdev, state);
Auke Kok1eae4eb2007-10-31 15:22:00 -07005624}
5625
Rafael J. Wysockiaa338602011-02-11 00:06:54 +01005626#ifdef CONFIG_PM
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005627static bool e1000e_pm_ready(struct e1000_adapter *adapter)
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005628{
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005629 return !!adapter->tx_ring->buffer_info;
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005630}
5631
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005632static int __e1000_resume(struct pci_dev *pdev)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005633{
5634 struct net_device *netdev = pci_get_drvdata(pdev);
5635 struct e1000_adapter *adapter = netdev_priv(netdev);
5636 struct e1000_hw *hw = &adapter->hw;
Bruce Allan78cd29d2011-03-24 03:09:03 +00005637 u16 aspm_disable_flag = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005638 u32 err;
5639
Bruce Allan78cd29d2011-03-24 03:09:03 +00005640 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
5641 aspm_disable_flag = PCIE_LINK_STATE_L0S;
5642 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
5643 aspm_disable_flag |= PCIE_LINK_STATE_L1;
5644 if (aspm_disable_flag)
5645 e1000e_disable_aspm(pdev, aspm_disable_flag);
5646
Auke Kokbc7f75f2007-09-17 12:30:59 -07005647 pci_set_power_state(pdev, PCI_D0);
5648 pci_restore_state(pdev);
Bruce Allan28b8f042010-01-07 16:30:56 +00005649 pci_save_state(pdev);
Taku Izumi6e4f6f62008-06-20 11:57:02 +09005650
Bruce Allan4662e822008-08-26 18:37:06 -07005651 e1000e_set_interrupt_capability(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005652 if (netif_running(netdev)) {
5653 err = e1000_request_irq(adapter);
5654 if (err)
5655 return err;
5656 }
5657
Bruce Allan2fbe4522012-04-19 03:21:47 +00005658 if (hw->mac.type >= e1000_pch2lan)
Bruce Allan99730e42011-05-13 07:19:48 +00005659 e1000_resume_workarounds_pchlan(&adapter->hw);
5660
Auke Kokbc7f75f2007-09-17 12:30:59 -07005661 e1000e_power_up_phy(adapter);
Bruce Allana4f58f52009-06-02 11:29:18 +00005662
5663 /* report the system wakeup cause from S3/S4 */
5664 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
5665 u16 phy_data;
5666
5667 e1e_rphy(&adapter->hw, BM_WUS, &phy_data);
5668 if (phy_data) {
5669 e_info("PHY Wakeup cause - %s\n",
5670 phy_data & E1000_WUS_EX ? "Unicast Packet" :
5671 phy_data & E1000_WUS_MC ? "Multicast Packet" :
5672 phy_data & E1000_WUS_BC ? "Broadcast Packet" :
5673 phy_data & E1000_WUS_MAG ? "Magic Packet" :
Jeff Kirsheref456f82011-11-03 11:40:28 +00005674 phy_data & E1000_WUS_LNKC ?
5675 "Link Status Change" : "other");
Bruce Allana4f58f52009-06-02 11:29:18 +00005676 }
5677 e1e_wphy(&adapter->hw, BM_WUS, ~0);
5678 } else {
5679 u32 wus = er32(WUS);
5680 if (wus) {
5681 e_info("MAC Wakeup cause - %s\n",
5682 wus & E1000_WUS_EX ? "Unicast Packet" :
5683 wus & E1000_WUS_MC ? "Multicast Packet" :
5684 wus & E1000_WUS_BC ? "Broadcast Packet" :
5685 wus & E1000_WUS_MAG ? "Magic Packet" :
5686 wus & E1000_WUS_LNKC ? "Link Status Change" :
5687 "other");
5688 }
5689 ew32(WUS, ~0);
5690 }
5691
Auke Kokbc7f75f2007-09-17 12:30:59 -07005692 e1000e_reset(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005693
Bruce Allancd791612010-05-10 14:59:51 +00005694 e1000_init_manageability_pt(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005695
5696 if (netif_running(netdev))
5697 e1000e_up(adapter);
5698
5699 netif_device_attach(netdev);
5700
Bruce Allanad680762008-03-28 09:15:03 -07005701 /*
5702 * If the controller has AMT, do not set DRV_LOAD until the interface
Auke Kokbc7f75f2007-09-17 12:30:59 -07005703 * is up. For all other cases, let the f/w know that the h/w is now
Bruce Allanad680762008-03-28 09:15:03 -07005704 * under the control of the driver.
5705 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07005706 if (!(adapter->flags & FLAG_HAS_AMT))
Bruce Allan31dbe5b2011-01-06 14:29:52 +00005707 e1000e_get_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005708
5709 return 0;
5710}
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005711
Rafael J. Wysockia0340162010-03-17 23:12:24 -07005712#ifdef CONFIG_PM_SLEEP
5713static int e1000_suspend(struct device *dev)
5714{
5715 struct pci_dev *pdev = to_pci_dev(dev);
5716 int retval;
5717 bool wake;
5718
5719 retval = __e1000_shutdown(pdev, &wake, false);
5720 if (!retval)
5721 e1000_complete_shutdown(pdev, true, wake);
5722
5723 return retval;
5724}
5725
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005726static int e1000_resume(struct device *dev)
5727{
5728 struct pci_dev *pdev = to_pci_dev(dev);
5729 struct net_device *netdev = pci_get_drvdata(pdev);
5730 struct e1000_adapter *adapter = netdev_priv(netdev);
5731
5732 if (e1000e_pm_ready(adapter))
5733 adapter->idle_check = true;
5734
5735 return __e1000_resume(pdev);
5736}
Rafael J. Wysockia0340162010-03-17 23:12:24 -07005737#endif /* CONFIG_PM_SLEEP */
5738
5739#ifdef CONFIG_PM_RUNTIME
5740static int e1000_runtime_suspend(struct device *dev)
5741{
5742 struct pci_dev *pdev = to_pci_dev(dev);
5743 struct net_device *netdev = pci_get_drvdata(pdev);
5744 struct e1000_adapter *adapter = netdev_priv(netdev);
5745
5746 if (e1000e_pm_ready(adapter)) {
5747 bool wake;
5748
5749 __e1000_shutdown(pdev, &wake, true);
5750 }
5751
5752 return 0;
5753}
5754
5755static int e1000_idle(struct device *dev)
5756{
5757 struct pci_dev *pdev = to_pci_dev(dev);
5758 struct net_device *netdev = pci_get_drvdata(pdev);
5759 struct e1000_adapter *adapter = netdev_priv(netdev);
5760
5761 if (!e1000e_pm_ready(adapter))
5762 return 0;
5763
5764 if (adapter->idle_check) {
5765 adapter->idle_check = false;
5766 if (!e1000e_has_link(adapter))
5767 pm_schedule_suspend(dev, MSEC_PER_SEC);
5768 }
5769
5770 return -EBUSY;
5771}
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005772
5773static int e1000_runtime_resume(struct device *dev)
5774{
5775 struct pci_dev *pdev = to_pci_dev(dev);
5776 struct net_device *netdev = pci_get_drvdata(pdev);
5777 struct e1000_adapter *adapter = netdev_priv(netdev);
5778
5779 if (!e1000e_pm_ready(adapter))
5780 return 0;
5781
5782 adapter->idle_check = !dev->power.runtime_auto;
5783 return __e1000_resume(pdev);
5784}
Rafael J. Wysockia0340162010-03-17 23:12:24 -07005785#endif /* CONFIG_PM_RUNTIME */
Rafael J. Wysockiaa338602011-02-11 00:06:54 +01005786#endif /* CONFIG_PM */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005787
5788static void e1000_shutdown(struct pci_dev *pdev)
5789{
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005790 bool wake = false;
5791
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005792 __e1000_shutdown(pdev, &wake, false);
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00005793
5794 if (system_state == SYSTEM_POWER_OFF)
5795 e1000_complete_shutdown(pdev, false, wake);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005796}
5797
5798#ifdef CONFIG_NET_POLL_CONTROLLER
Dongdong Deng147b2c82010-11-16 19:50:15 -08005799
5800static irqreturn_t e1000_intr_msix(int irq, void *data)
5801{
5802 struct net_device *netdev = data;
5803 struct e1000_adapter *adapter = netdev_priv(netdev);
Dongdong Deng147b2c82010-11-16 19:50:15 -08005804
5805 if (adapter->msix_entries) {
Bruce Allan90da0662011-01-06 07:02:53 +00005806 int vector, msix_irq;
5807
Dongdong Deng147b2c82010-11-16 19:50:15 -08005808 vector = 0;
5809 msix_irq = adapter->msix_entries[vector].vector;
5810 disable_irq(msix_irq);
5811 e1000_intr_msix_rx(msix_irq, netdev);
5812 enable_irq(msix_irq);
5813
5814 vector++;
5815 msix_irq = adapter->msix_entries[vector].vector;
5816 disable_irq(msix_irq);
5817 e1000_intr_msix_tx(msix_irq, netdev);
5818 enable_irq(msix_irq);
5819
5820 vector++;
5821 msix_irq = adapter->msix_entries[vector].vector;
5822 disable_irq(msix_irq);
5823 e1000_msix_other(msix_irq, netdev);
5824 enable_irq(msix_irq);
5825 }
5826
5827 return IRQ_HANDLED;
5828}
5829
Auke Kokbc7f75f2007-09-17 12:30:59 -07005830/*
5831 * Polling 'interrupt' - used by things like netconsole to send skbs
5832 * without having to re-enable interrupts. It's not called while
5833 * the interrupt routine is executing.
5834 */
5835static void e1000_netpoll(struct net_device *netdev)
5836{
5837 struct e1000_adapter *adapter = netdev_priv(netdev);
5838
Dongdong Deng147b2c82010-11-16 19:50:15 -08005839 switch (adapter->int_mode) {
5840 case E1000E_INT_MODE_MSIX:
5841 e1000_intr_msix(adapter->pdev->irq, netdev);
5842 break;
5843 case E1000E_INT_MODE_MSI:
5844 disable_irq(adapter->pdev->irq);
5845 e1000_intr_msi(adapter->pdev->irq, netdev);
5846 enable_irq(adapter->pdev->irq);
5847 break;
5848 default: /* E1000E_INT_MODE_LEGACY */
5849 disable_irq(adapter->pdev->irq);
5850 e1000_intr(adapter->pdev->irq, netdev);
5851 enable_irq(adapter->pdev->irq);
5852 break;
5853 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07005854}
5855#endif
5856
5857/**
5858 * e1000_io_error_detected - called when PCI error is detected
5859 * @pdev: Pointer to PCI device
5860 * @state: The current pci connection state
5861 *
5862 * This function is called after a PCI bus error affecting
5863 * this device has been detected.
5864 */
5865static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
5866 pci_channel_state_t state)
5867{
5868 struct net_device *netdev = pci_get_drvdata(pdev);
5869 struct e1000_adapter *adapter = netdev_priv(netdev);
5870
5871 netif_device_detach(netdev);
5872
Mike Masonc93b5a72009-06-30 12:45:53 +00005873 if (state == pci_channel_io_perm_failure)
5874 return PCI_ERS_RESULT_DISCONNECT;
5875
Auke Kokbc7f75f2007-09-17 12:30:59 -07005876 if (netif_running(netdev))
5877 e1000e_down(adapter);
5878 pci_disable_device(pdev);
5879
5880 /* Request a slot slot reset. */
5881 return PCI_ERS_RESULT_NEED_RESET;
5882}
5883
5884/**
5885 * e1000_io_slot_reset - called after the pci bus has been reset.
5886 * @pdev: Pointer to PCI device
5887 *
5888 * Restart the card from scratch, as if from a cold-boot. Implementation
5889 * resembles the first-half of the e1000_resume routine.
5890 */
5891static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
5892{
5893 struct net_device *netdev = pci_get_drvdata(pdev);
5894 struct e1000_adapter *adapter = netdev_priv(netdev);
5895 struct e1000_hw *hw = &adapter->hw;
Bruce Allan78cd29d2011-03-24 03:09:03 +00005896 u16 aspm_disable_flag = 0;
Taku Izumi6e4f6f62008-06-20 11:57:02 +09005897 int err;
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00005898 pci_ers_result_t result;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005899
Bruce Allan78cd29d2011-03-24 03:09:03 +00005900 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
5901 aspm_disable_flag = PCIE_LINK_STATE_L0S;
Bruce Allan6f461f62010-04-27 03:33:04 +00005902 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
Bruce Allan78cd29d2011-03-24 03:09:03 +00005903 aspm_disable_flag |= PCIE_LINK_STATE_L1;
5904 if (aspm_disable_flag)
5905 e1000e_disable_aspm(pdev, aspm_disable_flag);
5906
Bruce Allanf0f422e2008-08-04 17:21:53 -07005907 err = pci_enable_device_mem(pdev);
Taku Izumi6e4f6f62008-06-20 11:57:02 +09005908 if (err) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07005909 dev_err(&pdev->dev,
5910 "Cannot re-enable PCI device after reset.\n");
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00005911 result = PCI_ERS_RESULT_DISCONNECT;
5912 } else {
5913 pci_set_master(pdev);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005914 pdev->state_saved = true;
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00005915 pci_restore_state(pdev);
5916
5917 pci_enable_wake(pdev, PCI_D3hot, 0);
5918 pci_enable_wake(pdev, PCI_D3cold, 0);
5919
5920 e1000e_reset(adapter);
5921 ew32(WUS, ~0);
5922 result = PCI_ERS_RESULT_RECOVERED;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005923 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07005924
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00005925 pci_cleanup_aer_uncorrect_error_status(pdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005926
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00005927 return result;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005928}
5929
5930/**
5931 * e1000_io_resume - called when traffic can start flowing again.
5932 * @pdev: Pointer to PCI device
5933 *
5934 * This callback is called when the error recovery driver tells us that
5935 * its OK to resume normal operation. Implementation resembles the
5936 * second-half of the e1000_resume routine.
5937 */
5938static void e1000_io_resume(struct pci_dev *pdev)
5939{
5940 struct net_device *netdev = pci_get_drvdata(pdev);
5941 struct e1000_adapter *adapter = netdev_priv(netdev);
5942
Bruce Allancd791612010-05-10 14:59:51 +00005943 e1000_init_manageability_pt(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005944
5945 if (netif_running(netdev)) {
5946 if (e1000e_up(adapter)) {
5947 dev_err(&pdev->dev,
5948 "can't bring device back up after reset\n");
5949 return;
5950 }
5951 }
5952
5953 netif_device_attach(netdev);
5954
Bruce Allanad680762008-03-28 09:15:03 -07005955 /*
5956 * If the controller has AMT, do not set DRV_LOAD until the interface
Auke Kokbc7f75f2007-09-17 12:30:59 -07005957 * is up. For all other cases, let the f/w know that the h/w is now
Bruce Allanad680762008-03-28 09:15:03 -07005958 * under the control of the driver.
5959 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07005960 if (!(adapter->flags & FLAG_HAS_AMT))
Bruce Allan31dbe5b2011-01-06 14:29:52 +00005961 e1000e_get_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005962
5963}
5964
5965static void e1000_print_device_info(struct e1000_adapter *adapter)
5966{
5967 struct e1000_hw *hw = &adapter->hw;
5968 struct net_device *netdev = adapter->netdev;
Bruce Allan073287c2010-11-24 06:01:51 +00005969 u32 ret_val;
5970 u8 pba_str[E1000_PBANUM_LENGTH];
Auke Kokbc7f75f2007-09-17 12:30:59 -07005971
5972 /* print bus type/speed/width info */
Bruce Allana5cc7642011-03-19 00:31:23 +00005973 e_info("(PCI Express:2.5GT/s:%s) %pM\n",
Jeff Kirsher44defeb2008-08-04 17:20:41 -07005974 /* bus width */
5975 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
5976 "Width x1"),
5977 /* MAC address */
Johannes Berg7c510e42008-10-27 17:47:26 -07005978 netdev->dev_addr);
Jeff Kirsher44defeb2008-08-04 17:20:41 -07005979 e_info("Intel(R) PRO/%s Network Connection\n",
5980 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000");
Bruce Allan073287c2010-11-24 06:01:51 +00005981 ret_val = e1000_read_pba_string_generic(hw, pba_str,
5982 E1000_PBANUM_LENGTH);
5983 if (ret_val)
Bruce Allanf2315bf2011-12-16 00:46:59 +00005984 strlcpy((char *)pba_str, "Unknown", sizeof(pba_str));
Bruce Allan073287c2010-11-24 06:01:51 +00005985 e_info("MAC: %d, PHY: %d, PBA No: %s\n",
5986 hw->mac.type, hw->phy.type, pba_str);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005987}
5988
Auke Kok10aa4c02008-08-04 17:21:20 -07005989static void e1000_eeprom_checks(struct e1000_adapter *adapter)
5990{
5991 struct e1000_hw *hw = &adapter->hw;
5992 int ret_val;
5993 u16 buf = 0;
5994
5995 if (hw->mac.type != e1000_82573)
5996 return;
5997
5998 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf);
Bruce Allane885d762012-01-31 06:37:32 +00005999 le16_to_cpus(&buf);
6000 if (!ret_val && (!(buf & (1 << 0)))) {
Auke Kok10aa4c02008-08-04 17:21:20 -07006001 /* Deep Smart Power Down (DSPD) */
Frans Pop6c2a9ef2008-09-22 14:52:22 -07006002 dev_warn(&adapter->pdev->dev,
6003 "Warning: detected DSPD enabled in EEPROM\n");
Auke Kok10aa4c02008-08-04 17:21:20 -07006004 }
Auke Kok10aa4c02008-08-04 17:21:20 -07006005}
6006
Michał Mirosławc8f44af2011-11-15 15:29:55 +00006007static int e1000_set_features(struct net_device *netdev,
Bruce Allan70495a52012-01-11 01:26:50 +00006008 netdev_features_t features)
Bruce Allandc221292011-08-19 03:23:48 +00006009{
6010 struct e1000_adapter *adapter = netdev_priv(netdev);
Michał Mirosławc8f44af2011-11-15 15:29:55 +00006011 netdev_features_t changed = features ^ netdev->features;
Bruce Allandc221292011-08-19 03:23:48 +00006012
6013 if (changed & (NETIF_F_TSO | NETIF_F_TSO6))
6014 adapter->flags |= FLAG_TSO_FORCE;
6015
6016 if (!(changed & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX |
Ben Greearcf955e62012-02-11 15:39:51 +00006017 NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_RXFCS |
6018 NETIF_F_RXALL)))
Bruce Allandc221292011-08-19 03:23:48 +00006019 return 0;
6020
Ben Greear01840392012-02-11 15:39:25 +00006021 if (changed & NETIF_F_RXFCS) {
6022 if (features & NETIF_F_RXFCS) {
6023 adapter->flags2 &= ~FLAG2_CRC_STRIPPING;
6024 } else {
6025 /* We need to take it back to defaults, which might mean
6026 * stripping is still disabled at the adapter level.
6027 */
6028 if (adapter->flags2 & FLAG2_DFLT_CRC_STRIPPING)
6029 adapter->flags2 |= FLAG2_CRC_STRIPPING;
6030 else
6031 adapter->flags2 &= ~FLAG2_CRC_STRIPPING;
6032 }
6033 }
6034
Bruce Allan70495a52012-01-11 01:26:50 +00006035 netdev->features = features;
6036
Bruce Allandc221292011-08-19 03:23:48 +00006037 if (netif_running(netdev))
6038 e1000e_reinit_locked(adapter);
6039 else
6040 e1000e_reset(adapter);
6041
6042 return 0;
6043}
6044
Stephen Hemminger651c2462008-11-19 21:57:48 -08006045static const struct net_device_ops e1000e_netdev_ops = {
6046 .ndo_open = e1000_open,
6047 .ndo_stop = e1000_close,
Stephen Hemminger00829822008-11-20 20:14:53 -08006048 .ndo_start_xmit = e1000_xmit_frame,
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00006049 .ndo_get_stats64 = e1000e_get_stats64,
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00006050 .ndo_set_rx_mode = e1000e_set_rx_mode,
Stephen Hemminger651c2462008-11-19 21:57:48 -08006051 .ndo_set_mac_address = e1000_set_mac,
6052 .ndo_change_mtu = e1000_change_mtu,
6053 .ndo_do_ioctl = e1000_ioctl,
6054 .ndo_tx_timeout = e1000_tx_timeout,
6055 .ndo_validate_addr = eth_validate_addr,
6056
Stephen Hemminger651c2462008-11-19 21:57:48 -08006057 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid,
6058 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid,
6059#ifdef CONFIG_NET_POLL_CONTROLLER
6060 .ndo_poll_controller = e1000_netpoll,
6061#endif
Bruce Allandc221292011-08-19 03:23:48 +00006062 .ndo_set_features = e1000_set_features,
Stephen Hemminger651c2462008-11-19 21:57:48 -08006063};
6064
Auke Kokbc7f75f2007-09-17 12:30:59 -07006065/**
6066 * e1000_probe - Device Initialization Routine
6067 * @pdev: PCI device information struct
6068 * @ent: entry in e1000_pci_tbl
6069 *
6070 * Returns 0 on success, negative on failure
6071 *
6072 * e1000_probe initializes an adapter identified by a pci_dev structure.
6073 * The OS initialization, configuring of the adapter private structure,
6074 * and a hardware reset occur.
6075 **/
6076static int __devinit e1000_probe(struct pci_dev *pdev,
6077 const struct pci_device_id *ent)
6078{
6079 struct net_device *netdev;
6080 struct e1000_adapter *adapter;
6081 struct e1000_hw *hw;
6082 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data];
Becky Brucef47e81f2008-05-01 18:03:11 -05006083 resource_size_t mmio_start, mmio_len;
6084 resource_size_t flash_start, flash_len;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006085 static int cards_found;
Bruce Allan78cd29d2011-03-24 03:09:03 +00006086 u16 aspm_disable_flag = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006087 int i, err, pci_using_dac;
6088 u16 eeprom_data = 0;
6089 u16 eeprom_apme_mask = E1000_EEPROM_APME;
6090
Bruce Allan78cd29d2011-03-24 03:09:03 +00006091 if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S)
6092 aspm_disable_flag = PCIE_LINK_STATE_L0S;
Bruce Allan6f461f62010-04-27 03:33:04 +00006093 if (ei->flags2 & FLAG2_DISABLE_ASPM_L1)
Bruce Allan78cd29d2011-03-24 03:09:03 +00006094 aspm_disable_flag |= PCIE_LINK_STATE_L1;
6095 if (aspm_disable_flag)
6096 e1000e_disable_aspm(pdev, aspm_disable_flag);
Taku Izumi6e4f6f62008-06-20 11:57:02 +09006097
Bruce Allanf0f422e2008-08-04 17:21:53 -07006098 err = pci_enable_device_mem(pdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006099 if (err)
6100 return err;
6101
6102 pci_using_dac = 0;
Nick Nunley0be3f552010-04-27 13:09:05 +00006103 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006104 if (!err) {
Nick Nunley0be3f552010-04-27 13:09:05 +00006105 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006106 if (!err)
6107 pci_using_dac = 1;
6108 } else {
Nick Nunley0be3f552010-04-27 13:09:05 +00006109 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006110 if (err) {
Nick Nunley0be3f552010-04-27 13:09:05 +00006111 err = dma_set_coherent_mask(&pdev->dev,
6112 DMA_BIT_MASK(32));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006113 if (err) {
Jeff Kirsheref456f82011-11-03 11:40:28 +00006114 dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07006115 goto err_dma;
6116 }
6117 }
6118 }
6119
Arjan van de Vene8de1482008-10-22 19:55:31 -07006120 err = pci_request_selected_regions_exclusive(pdev,
Bruce Allanf0f422e2008-08-04 17:21:53 -07006121 pci_select_bars(pdev, IORESOURCE_MEM),
6122 e1000e_driver_name);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006123 if (err)
6124 goto err_pci_reg;
6125
Xiaotian Feng68eac462009-08-14 14:35:52 +00006126 /* AER (Advanced Error Reporting) hooks */
Frans Pop19d5afd2009-10-02 10:04:12 -07006127 pci_enable_pcie_error_reporting(pdev);
Xiaotian Feng68eac462009-08-14 14:35:52 +00006128
Auke Kokbc7f75f2007-09-17 12:30:59 -07006129 pci_set_master(pdev);
Bruce Allan438b3652008-11-21 16:51:33 -08006130 /* PCI config space info */
6131 err = pci_save_state(pdev);
6132 if (err)
6133 goto err_alloc_etherdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006134
6135 err = -ENOMEM;
6136 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
6137 if (!netdev)
6138 goto err_alloc_etherdev;
6139
Auke Kokbc7f75f2007-09-17 12:30:59 -07006140 SET_NETDEV_DEV(netdev, &pdev->dev);
6141
Tom Herbertf85e4df2010-05-05 14:03:32 +00006142 netdev->irq = pdev->irq;
6143
Auke Kokbc7f75f2007-09-17 12:30:59 -07006144 pci_set_drvdata(pdev, netdev);
6145 adapter = netdev_priv(netdev);
6146 hw = &adapter->hw;
6147 adapter->netdev = netdev;
6148 adapter->pdev = pdev;
6149 adapter->ei = ei;
6150 adapter->pba = ei->pba;
6151 adapter->flags = ei->flags;
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +00006152 adapter->flags2 = ei->flags2;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006153 adapter->hw.adapter = adapter;
6154 adapter->hw.mac.type = ei->mac;
Bruce Allan2adc55c2009-06-02 11:28:58 +00006155 adapter->max_hw_frame_size = ei->max_hw_frame_size;
stephen hemmingerb3f4d592012-03-13 06:04:20 +00006156 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006157
6158 mmio_start = pci_resource_start(pdev, 0);
6159 mmio_len = pci_resource_len(pdev, 0);
6160
6161 err = -EIO;
6162 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
6163 if (!adapter->hw.hw_addr)
6164 goto err_ioremap;
6165
6166 if ((adapter->flags & FLAG_HAS_FLASH) &&
6167 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
6168 flash_start = pci_resource_start(pdev, 1);
6169 flash_len = pci_resource_len(pdev, 1);
6170 adapter->hw.flash_address = ioremap(flash_start, flash_len);
6171 if (!adapter->hw.flash_address)
6172 goto err_flashmap;
6173 }
6174
6175 /* construct the net_device struct */
Stephen Hemminger651c2462008-11-19 21:57:48 -08006176 netdev->netdev_ops = &e1000e_netdev_ops;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006177 e1000e_set_ethtool_ops(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006178 netdev->watchdog_timeo = 5 * HZ;
Bruce Allanc58c8a72012-03-20 03:48:19 +00006179 netif_napi_add(netdev, &adapter->napi, e1000e_poll, 64);
Bruce Allanf2315bf2011-12-16 00:46:59 +00006180 strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006181
6182 netdev->mem_start = mmio_start;
6183 netdev->mem_end = mmio_start + mmio_len;
6184
6185 adapter->bd_number = cards_found++;
6186
Bruce Allan4662e822008-08-26 18:37:06 -07006187 e1000e_check_options(adapter);
6188
Auke Kokbc7f75f2007-09-17 12:30:59 -07006189 /* setup adapter struct */
6190 err = e1000_sw_init(adapter);
6191 if (err)
6192 goto err_sw_init;
6193
Auke Kokbc7f75f2007-09-17 12:30:59 -07006194 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
6195 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
6196 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
6197
Jeff Kirsher69e3fd82008-04-02 13:48:18 -07006198 err = ei->get_variants(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006199 if (err)
6200 goto err_hw_init;
6201
Bruce Allan4a770352008-10-01 17:18:35 -07006202 if ((adapter->flags & FLAG_IS_ICH) &&
6203 (adapter->flags & FLAG_READ_ONLY_NVM))
6204 e1000e_write_protect_nvm_ich8lan(&adapter->hw);
6205
Auke Kokbc7f75f2007-09-17 12:30:59 -07006206 hw->mac.ops.get_bus_info(&adapter->hw);
6207
Jeff Kirsher318a94d2008-03-28 09:15:16 -07006208 adapter->hw.phy.autoneg_wait_to_complete = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006209
6210 /* Copper options */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07006211 if (adapter->hw.phy.media_type == e1000_media_type_copper) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07006212 adapter->hw.phy.mdix = AUTO_ALL_MODES;
6213 adapter->hw.phy.disable_polarity_correction = 0;
6214 adapter->hw.phy.ms_type = e1000_ms_hw_default;
6215 }
6216
Bruce Allan470a5422012-05-26 06:08:48 +00006217 if (hw->phy.ops.check_reset_block && hw->phy.ops.check_reset_block(hw))
Bruce Allan185095f2012-06-07 02:23:37 +00006218 dev_info(&pdev->dev,
6219 "PHY reset is blocked due to SOL/IDER session.\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07006220
Bruce Allandc221292011-08-19 03:23:48 +00006221 /* Set initial default active device features */
6222 netdev->features = (NETIF_F_SG |
6223 NETIF_F_HW_VLAN_RX |
6224 NETIF_F_HW_VLAN_TX |
6225 NETIF_F_TSO |
6226 NETIF_F_TSO6 |
Bruce Allan70495a52012-01-11 01:26:50 +00006227 NETIF_F_RXHASH |
Bruce Allandc221292011-08-19 03:23:48 +00006228 NETIF_F_RXCSUM |
6229 NETIF_F_HW_CSUM);
6230
6231 /* Set user-changeable features (subset of all device features) */
6232 netdev->hw_features = netdev->features;
Ben Greear01840392012-02-11 15:39:25 +00006233 netdev->hw_features |= NETIF_F_RXFCS;
Ben Greear943146d2012-02-11 15:39:40 +00006234 netdev->priv_flags |= IFF_SUPP_NOFCS;
Ben Greearcf955e62012-02-11 15:39:51 +00006235 netdev->hw_features |= NETIF_F_RXALL;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006236
6237 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
6238 netdev->features |= NETIF_F_HW_VLAN_FILTER;
6239
Bruce Allandc221292011-08-19 03:23:48 +00006240 netdev->vlan_features |= (NETIF_F_SG |
6241 NETIF_F_TSO |
6242 NETIF_F_TSO6 |
6243 NETIF_F_HW_CSUM);
Jeff Kirshera5136e22008-06-05 04:07:28 -07006244
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00006245 netdev->priv_flags |= IFF_UNICAST_FLT;
6246
Yi Zou7b872a52010-09-22 17:57:58 +00006247 if (pci_using_dac) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07006248 netdev->features |= NETIF_F_HIGHDMA;
Yi Zou7b872a52010-09-22 17:57:58 +00006249 netdev->vlan_features |= NETIF_F_HIGHDMA;
6250 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07006251
Auke Kokbc7f75f2007-09-17 12:30:59 -07006252 if (e1000e_enable_mng_pass_thru(&adapter->hw))
6253 adapter->flags |= FLAG_MNG_PT_ENABLED;
6254
Bruce Allanad680762008-03-28 09:15:03 -07006255 /*
6256 * before reading the NVM, reset the controller to
6257 * put the device in a known good starting state
6258 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07006259 adapter->hw.mac.ops.reset_hw(&adapter->hw);
6260
6261 /*
6262 * systems with ASPM and others may see the checksum fail on the first
6263 * attempt. Let's give it a few tries
6264 */
6265 for (i = 0;; i++) {
6266 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0)
6267 break;
6268 if (i == 2) {
Bruce Allan185095f2012-06-07 02:23:37 +00006269 dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07006270 err = -EIO;
6271 goto err_eeprom;
6272 }
6273 }
6274
Auke Kok10aa4c02008-08-04 17:21:20 -07006275 e1000_eeprom_checks(adapter);
6276
Bruce Allan608f8a02010-01-13 02:04:58 +00006277 /* copy the MAC address */
Auke Kokbc7f75f2007-09-17 12:30:59 -07006278 if (e1000e_read_mac_addr(&adapter->hw))
Bruce Allan185095f2012-06-07 02:23:37 +00006279 dev_err(&pdev->dev,
6280 "NVM Read Error while reading MAC address\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07006281
6282 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
6283 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
6284
6285 if (!is_valid_ether_addr(netdev->perm_addr)) {
Bruce Allan185095f2012-06-07 02:23:37 +00006286 dev_err(&pdev->dev, "Invalid MAC Address: %pM\n",
6287 netdev->perm_addr);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006288 err = -EIO;
6289 goto err_eeprom;
6290 }
6291
6292 init_timer(&adapter->watchdog_timer);
Joe Perchesc061b182010-08-23 18:20:03 +00006293 adapter->watchdog_timer.function = e1000_watchdog;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006294 adapter->watchdog_timer.data = (unsigned long) adapter;
6295
6296 init_timer(&adapter->phy_info_timer);
Joe Perchesc061b182010-08-23 18:20:03 +00006297 adapter->phy_info_timer.function = e1000_update_phy_info;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006298 adapter->phy_info_timer.data = (unsigned long) adapter;
6299
6300 INIT_WORK(&adapter->reset_task, e1000_reset_task);
6301 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07006302 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround);
6303 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task);
Bruce Allan41cec6f2009-11-20 23:28:56 +00006304 INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006305
Auke Kokbc7f75f2007-09-17 12:30:59 -07006306 /* Initialize link parameters. User can change them with ethtool */
6307 adapter->hw.mac.autoneg = 1;
Rusty Russell3db1cd52011-12-19 13:56:45 +00006308 adapter->fc_autoneg = true;
Bruce Allan5c48ef3e22008-11-21 16:57:36 -08006309 adapter->hw.fc.requested_mode = e1000_fc_default;
6310 adapter->hw.fc.current_mode = e1000_fc_default;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006311 adapter->hw.phy.autoneg_advertised = 0x2f;
6312
6313 /* ring size defaults */
6314 adapter->rx_ring->count = 256;
6315 adapter->tx_ring->count = 256;
6316
6317 /*
6318 * Initial Wake on LAN setting - If APM wake is enabled in
6319 * the EEPROM, enable the ACPI Magic Packet filter
6320 */
6321 if (adapter->flags & FLAG_APME_IN_WUC) {
6322 /* APME bit in EEPROM is mapped to WUC.APME */
6323 eeprom_data = er32(WUC);
6324 eeprom_apme_mask = E1000_WUC_APME;
Bruce Allan4def99b2011-02-02 09:30:36 +00006325 if ((hw->mac.type > e1000_ich10lan) &&
6326 (eeprom_data & E1000_WUC_PHY_WAKE))
Bruce Allana4f58f52009-06-02 11:29:18 +00006327 adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006328 } else if (adapter->flags & FLAG_APME_IN_CTRL3) {
6329 if (adapter->flags & FLAG_APME_CHECK_PORT_B &&
6330 (adapter->hw.bus.func == 1))
Bruce Allan3d3a1672012-02-23 03:13:18 +00006331 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_B,
6332 1, &eeprom_data);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006333 else
Bruce Allan3d3a1672012-02-23 03:13:18 +00006334 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_A,
6335 1, &eeprom_data);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006336 }
6337
6338 /* fetch WoL from EEPROM */
6339 if (eeprom_data & eeprom_apme_mask)
6340 adapter->eeprom_wol |= E1000_WUFC_MAG;
6341
6342 /*
6343 * now that we have the eeprom settings, apply the special cases
6344 * where the eeprom may be wrong or the board simply won't support
6345 * wake on lan on a particular port
6346 */
6347 if (!(adapter->flags & FLAG_HAS_WOL))
6348 adapter->eeprom_wol = 0;
6349
6350 /* initialize the wol settings based on the eeprom settings */
6351 adapter->wol = adapter->eeprom_wol;
\"Rafael J. Wysocki\6ff68022008-11-12 09:52:32 +00006352 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006353
Bruce Allan84527592008-11-21 17:00:22 -08006354 /* save off EEPROM version number */
6355 e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers);
6356
Auke Kokbc7f75f2007-09-17 12:30:59 -07006357 /* reset the hardware with the new settings */
6358 e1000e_reset(adapter);
6359
Bruce Allanad680762008-03-28 09:15:03 -07006360 /*
6361 * If the controller has AMT, do not set DRV_LOAD until the interface
Auke Kokbc7f75f2007-09-17 12:30:59 -07006362 * is up. For all other cases, let the f/w know that the h/w is now
Bruce Allanad680762008-03-28 09:15:03 -07006363 * under the control of the driver.
6364 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07006365 if (!(adapter->flags & FLAG_HAS_AMT))
Bruce Allan31dbe5b2011-01-06 14:29:52 +00006366 e1000e_get_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006367
Bruce Allanf2315bf2011-12-16 00:46:59 +00006368 strlcpy(netdev->name, "eth%d", sizeof(netdev->name));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006369 err = register_netdev(netdev);
6370 if (err)
6371 goto err_register;
6372
Jesse Brandeburg9c563d22009-04-17 20:44:34 +00006373 /* carrier off reporting is important to ethtool even BEFORE open */
6374 netif_carrier_off(netdev);
6375
Auke Kokbc7f75f2007-09-17 12:30:59 -07006376 e1000_print_device_info(adapter);
6377
Alan Sternf3ec4f82010-06-08 15:23:51 -04006378 if (pci_dev_run_wake(pdev))
6379 pm_runtime_put_noidle(&pdev->dev);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006380
Auke Kokbc7f75f2007-09-17 12:30:59 -07006381 return 0;
6382
6383err_register:
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07006384 if (!(adapter->flags & FLAG_HAS_AMT))
Bruce Allan31dbe5b2011-01-06 14:29:52 +00006385 e1000e_release_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006386err_eeprom:
Bruce Allan470a5422012-05-26 06:08:48 +00006387 if (hw->phy.ops.check_reset_block && !hw->phy.ops.check_reset_block(hw))
Auke Kokbc7f75f2007-09-17 12:30:59 -07006388 e1000_phy_hw_reset(&adapter->hw);
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07006389err_hw_init:
Auke Kokbc7f75f2007-09-17 12:30:59 -07006390 kfree(adapter->tx_ring);
6391 kfree(adapter->rx_ring);
6392err_sw_init:
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07006393 if (adapter->hw.flash_address)
6394 iounmap(adapter->hw.flash_address);
Jeff Kirshere82f54b2008-11-14 06:45:07 +00006395 e1000e_reset_interrupt_capability(adapter);
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07006396err_flashmap:
Auke Kokbc7f75f2007-09-17 12:30:59 -07006397 iounmap(adapter->hw.hw_addr);
6398err_ioremap:
6399 free_netdev(netdev);
6400err_alloc_etherdev:
Bruce Allanf0f422e2008-08-04 17:21:53 -07006401 pci_release_selected_regions(pdev,
6402 pci_select_bars(pdev, IORESOURCE_MEM));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006403err_pci_reg:
6404err_dma:
6405 pci_disable_device(pdev);
6406 return err;
6407}
6408
6409/**
6410 * e1000_remove - Device Removal Routine
6411 * @pdev: PCI device information struct
6412 *
6413 * e1000_remove is called by the PCI subsystem to alert the driver
6414 * that it should release a PCI device. The could be caused by a
6415 * Hot-Plug event, or because the driver is going to be removed from
6416 * memory.
6417 **/
6418static void __devexit e1000_remove(struct pci_dev *pdev)
6419{
6420 struct net_device *netdev = pci_get_drvdata(pdev);
6421 struct e1000_adapter *adapter = netdev_priv(netdev);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006422 bool down = test_bit(__E1000_DOWN, &adapter->state);
6423
Bruce Allanad680762008-03-28 09:15:03 -07006424 /*
Tejun Heo23f333a2010-12-12 16:45:14 +01006425 * The timers may be rescheduled, so explicitly disable them
6426 * from being rescheduled.
Bruce Allanad680762008-03-28 09:15:03 -07006427 */
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006428 if (!down)
6429 set_bit(__E1000_DOWN, &adapter->state);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006430 del_timer_sync(&adapter->watchdog_timer);
6431 del_timer_sync(&adapter->phy_info_timer);
6432
Bruce Allan41cec6f2009-11-20 23:28:56 +00006433 cancel_work_sync(&adapter->reset_task);
6434 cancel_work_sync(&adapter->watchdog_task);
6435 cancel_work_sync(&adapter->downshift_task);
6436 cancel_work_sync(&adapter->update_phy_task);
6437 cancel_work_sync(&adapter->print_hang_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006438
Bruce Allan17f208d2009-12-01 15:47:22 +00006439 if (!(netdev->flags & IFF_UP))
6440 e1000_power_down_phy(adapter);
6441
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006442 /* Don't lie to e1000_close() down the road. */
6443 if (!down)
6444 clear_bit(__E1000_DOWN, &adapter->state);
Bruce Allan17f208d2009-12-01 15:47:22 +00006445 unregister_netdev(netdev);
6446
Alan Sternf3ec4f82010-06-08 15:23:51 -04006447 if (pci_dev_run_wake(pdev))
6448 pm_runtime_get_noresume(&pdev->dev);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006449
Bruce Allanad680762008-03-28 09:15:03 -07006450 /*
6451 * Release control of h/w to f/w. If f/w is AMT enabled, this
6452 * would have already happened in close and is redundant.
6453 */
Bruce Allan31dbe5b2011-01-06 14:29:52 +00006454 e1000e_release_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006455
Bruce Allan4662e822008-08-26 18:37:06 -07006456 e1000e_reset_interrupt_capability(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006457 kfree(adapter->tx_ring);
6458 kfree(adapter->rx_ring);
6459
6460 iounmap(adapter->hw.hw_addr);
6461 if (adapter->hw.flash_address)
6462 iounmap(adapter->hw.flash_address);
Bruce Allanf0f422e2008-08-04 17:21:53 -07006463 pci_release_selected_regions(pdev,
6464 pci_select_bars(pdev, IORESOURCE_MEM));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006465
6466 free_netdev(netdev);
6467
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00006468 /* AER disable */
Frans Pop19d5afd2009-10-02 10:04:12 -07006469 pci_disable_pcie_error_reporting(pdev);
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00006470
Auke Kokbc7f75f2007-09-17 12:30:59 -07006471 pci_disable_device(pdev);
6472}
6473
6474/* PCI Error Recovery (ERS) */
6475static struct pci_error_handlers e1000_err_handler = {
6476 .error_detected = e1000_io_error_detected,
6477 .slot_reset = e1000_io_slot_reset,
6478 .resume = e1000_io_resume,
6479};
6480
Alexey Dobriyana3aa1882010-01-07 11:58:11 +00006481static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = {
Auke Kokbc7f75f2007-09-17 12:30:59 -07006482 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 },
6483 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 },
6484 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 },
6485 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 },
6486 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 },
6487 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 },
Auke Kok040babf2007-10-31 15:22:05 -07006488 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 },
6489 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 },
6490 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 },
Bruce Allanad680762008-03-28 09:15:03 -07006491
Auke Kokbc7f75f2007-09-17 12:30:59 -07006492 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 },
6493 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 },
6494 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 },
6495 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 },
Bruce Allanad680762008-03-28 09:15:03 -07006496
Auke Kokbc7f75f2007-09-17 12:30:59 -07006497 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 },
6498 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 },
6499 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 },
Bruce Allanad680762008-03-28 09:15:03 -07006500
Bruce Allan4662e822008-08-26 18:37:06 -07006501 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 },
Bruce Allanbef28b12009-03-24 23:28:02 -07006502 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 },
Alexander Duyck8c81c9c2009-03-19 01:12:27 +00006503 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 },
Bruce Allan4662e822008-08-26 18:37:06 -07006504
Auke Kokbc7f75f2007-09-17 12:30:59 -07006505 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT),
6506 board_80003es2lan },
6507 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT),
6508 board_80003es2lan },
6509 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT),
6510 board_80003es2lan },
6511 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT),
6512 board_80003es2lan },
Bruce Allanad680762008-03-28 09:15:03 -07006513
Auke Kokbc7f75f2007-09-17 12:30:59 -07006514 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan },
6515 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan },
6516 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan },
6517 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan },
6518 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan },
6519 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan },
6520 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan },
Bruce Allan9e135a22009-12-01 15:50:31 +00006521 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan },
Bruce Allanad680762008-03-28 09:15:03 -07006522
Auke Kokbc7f75f2007-09-17 12:30:59 -07006523 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan },
6524 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan },
6525 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan },
6526 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan },
6527 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan },
Bruce Allan2f15f9d2008-08-26 18:36:36 -07006528 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan },
Bruce Allan97ac8ca2008-04-29 09:16:05 -07006529 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan },
6530 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan },
6531 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan },
6532
6533 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan },
6534 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan },
6535 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan },
Auke Kokbc7f75f2007-09-17 12:30:59 -07006536
Bruce Allanf4187b52008-08-26 18:36:50 -07006537 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan },
6538 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan },
Bruce Allan10df0b92010-05-10 15:02:52 +00006539 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan },
Bruce Allanf4187b52008-08-26 18:36:50 -07006540
Bruce Allana4f58f52009-06-02 11:29:18 +00006541 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan },
6542 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan },
6543 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan },
6544 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan },
6545
Bruce Alland3738bb2010-06-16 13:27:28 +00006546 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan },
6547 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan },
6548
Bruce Allan2fbe4522012-04-19 03:21:47 +00006549 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_LM), board_pch_lpt },
6550 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_V), board_pch_lpt },
6551
Bruce Allanf36bb6c2012-01-31 06:38:04 +00006552 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */
Auke Kokbc7f75f2007-09-17 12:30:59 -07006553};
6554MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
6555
Rafael J. Wysockiaa338602011-02-11 00:06:54 +01006556#ifdef CONFIG_PM
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006557static const struct dev_pm_ops e1000_pm_ops = {
Rafael J. Wysockia0340162010-03-17 23:12:24 -07006558 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume)
6559 SET_RUNTIME_PM_OPS(e1000_runtime_suspend,
6560 e1000_runtime_resume, e1000_idle)
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006561};
David S. Millere50208a2010-03-16 23:36:24 -07006562#endif
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006563
Auke Kokbc7f75f2007-09-17 12:30:59 -07006564/* PCI Device API Driver */
6565static struct pci_driver e1000_driver = {
6566 .name = e1000e_driver_name,
6567 .id_table = e1000_pci_tbl,
6568 .probe = e1000_probe,
6569 .remove = __devexit_p(e1000_remove),
Rafael J. Wysockiaa338602011-02-11 00:06:54 +01006570#ifdef CONFIG_PM
Bruce Allanf36bb6c2012-01-31 06:38:04 +00006571 .driver = {
6572 .pm = &e1000_pm_ops,
6573 },
Auke Kokbc7f75f2007-09-17 12:30:59 -07006574#endif
6575 .shutdown = e1000_shutdown,
6576 .err_handler = &e1000_err_handler
6577};
6578
6579/**
6580 * e1000_init_module - Driver Registration Routine
6581 *
6582 * e1000_init_module is the first routine called when the driver is
6583 * loaded. All it does is register with the PCI subsystem.
6584 **/
6585static int __init e1000_init_module(void)
6586{
6587 int ret;
Bruce Allan8544b9f2010-03-24 12:55:30 +00006588 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
6589 e1000e_driver_version);
Bruce Allanf5e261e2012-01-01 16:00:03 +00006590 pr_info("Copyright(c) 1999 - 2012 Intel Corporation.\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07006591 ret = pci_register_driver(&e1000_driver);
Bruce Allan53ec5492009-11-20 23:27:40 +00006592
Auke Kokbc7f75f2007-09-17 12:30:59 -07006593 return ret;
6594}
6595module_init(e1000_init_module);
6596
6597/**
6598 * e1000_exit_module - Driver Exit Cleanup Routine
6599 *
6600 * e1000_exit_module is called just before the driver is removed
6601 * from memory.
6602 **/
6603static void __exit e1000_exit_module(void)
6604{
6605 pci_unregister_driver(&e1000_driver);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006606}
6607module_exit(e1000_exit_module);
6608
6609
6610MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
6611MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
6612MODULE_LICENSE("GPL");
6613MODULE_VERSION(DRV_VERSION);
6614
Bruce Allan06c24b92012-02-23 03:13:13 +00006615/* netdev.c */