blob: e87e9b01f404446dfca553146fa4734c2af45f79 [file] [log] [blame]
Auke Kokbc7f75f2007-09-17 12:30:59 -07001/*******************************************************************************
2
3 Intel PRO/1000 Linux driver
Bruce Allanbf670442013-01-01 16:00:01 +00004 Copyright(c) 1999 - 2013 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>
Auke Kokbc7f75f2007-09-17 12:30:59 -070045#include <linux/ethtool.h>
46#include <linux/if_vlan.h>
47#include <linux/cpu.h>
48#include <linux/smp.h>
Linus Torvalds7e0bb712011-10-25 15:18:39 +020049#include <linux/pm_qos.h>
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +000050#include <linux/pm_runtime.h>
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +000051#include <linux/aer.h>
Paul Gortmaker70c71602011-05-22 16:47:17 -040052#include <linux/prefetch.h>
Auke Kokbc7f75f2007-09-17 12:30:59 -070053
54#include "e1000.h"
55
Bruce Allanb3ccf262011-05-19 01:53:41 +000056#define DRV_EXTRAVERSION "-k"
Bruce Allanc14c6432010-06-16 13:28:34 +000057
Bruce Allan8defe712013-03-06 09:03:13 +000058#define DRV_VERSION "2.3.2" DRV_EXTRAVERSION
Auke Kokbc7f75f2007-09-17 12:30:59 -070059char e1000e_driver_name[] = "e1000e";
60const char e1000e_driver_version[] = DRV_VERSION;
61
stephen hemmingerb3f4d592012-03-13 06:04:20 +000062#define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
63static int debug = -1;
64module_param(debug, int, 0);
65MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
66
Auke Kokbc7f75f2007-09-17 12:30:59 -070067static const struct e1000_info *e1000_info_tbl[] = {
68 [board_82571] = &e1000_82571_info,
69 [board_82572] = &e1000_82572_info,
70 [board_82573] = &e1000_82573_info,
Bruce Allan4662e822008-08-26 18:37:06 -070071 [board_82574] = &e1000_82574_info,
Alexander Duyck8c81c9c2009-03-19 01:12:27 +000072 [board_82583] = &e1000_82583_info,
Auke Kokbc7f75f2007-09-17 12:30:59 -070073 [board_80003es2lan] = &e1000_es2_info,
74 [board_ich8lan] = &e1000_ich8_info,
75 [board_ich9lan] = &e1000_ich9_info,
Bruce Allanf4187b52008-08-26 18:36:50 -070076 [board_ich10lan] = &e1000_ich10_info,
Bruce Allana4f58f52009-06-02 11:29:18 +000077 [board_pchlan] = &e1000_pch_info,
Bruce Alland3738bb2010-06-16 13:27:28 +000078 [board_pch2lan] = &e1000_pch2_info,
Bruce Allan2fbe4522012-04-19 03:21:47 +000079 [board_pch_lpt] = &e1000_pch_lpt_info,
Auke Kokbc7f75f2007-09-17 12:30:59 -070080};
81
Taku Izumi84f4ee92010-04-27 14:39:08 +000082struct e1000_reg_info {
83 u32 ofs;
84 char *name;
85};
86
Taku Izumi84f4ee92010-04-27 14:39:08 +000087static const struct e1000_reg_info e1000_reg_info_tbl[] = {
Taku Izumi84f4ee92010-04-27 14:39:08 +000088 /* General Registers */
89 {E1000_CTRL, "CTRL"},
90 {E1000_STATUS, "STATUS"},
91 {E1000_CTRL_EXT, "CTRL_EXT"},
92
93 /* Interrupt Registers */
94 {E1000_ICR, "ICR"},
95
Bruce Allanaf667a22010-12-31 06:10:01 +000096 /* Rx Registers */
Taku Izumi84f4ee92010-04-27 14:39:08 +000097 {E1000_RCTL, "RCTL"},
Bruce Allan1e360522012-03-20 03:48:13 +000098 {E1000_RDLEN(0), "RDLEN"},
99 {E1000_RDH(0), "RDH"},
100 {E1000_RDT(0), "RDT"},
Taku Izumi84f4ee92010-04-27 14:39:08 +0000101 {E1000_RDTR, "RDTR"},
102 {E1000_RXDCTL(0), "RXDCTL"},
103 {E1000_ERT, "ERT"},
Bruce Allan1e360522012-03-20 03:48:13 +0000104 {E1000_RDBAL(0), "RDBAL"},
105 {E1000_RDBAH(0), "RDBAH"},
Taku Izumi84f4ee92010-04-27 14:39:08 +0000106 {E1000_RDFH, "RDFH"},
107 {E1000_RDFT, "RDFT"},
108 {E1000_RDFHS, "RDFHS"},
109 {E1000_RDFTS, "RDFTS"},
110 {E1000_RDFPC, "RDFPC"},
111
Bruce Allanaf667a22010-12-31 06:10:01 +0000112 /* Tx Registers */
Taku Izumi84f4ee92010-04-27 14:39:08 +0000113 {E1000_TCTL, "TCTL"},
Bruce Allan1e360522012-03-20 03:48:13 +0000114 {E1000_TDBAL(0), "TDBAL"},
115 {E1000_TDBAH(0), "TDBAH"},
116 {E1000_TDLEN(0), "TDLEN"},
117 {E1000_TDH(0), "TDH"},
118 {E1000_TDT(0), "TDT"},
Taku Izumi84f4ee92010-04-27 14:39:08 +0000119 {E1000_TIDV, "TIDV"},
120 {E1000_TXDCTL(0), "TXDCTL"},
121 {E1000_TADV, "TADV"},
122 {E1000_TARC(0), "TARC"},
123 {E1000_TDFH, "TDFH"},
124 {E1000_TDFT, "TDFT"},
125 {E1000_TDFHS, "TDFHS"},
126 {E1000_TDFTS, "TDFTS"},
127 {E1000_TDFPC, "TDFPC"},
128
129 /* List Terminator */
Bruce Allanf36bb6c2012-01-31 06:38:04 +0000130 {0, NULL}
Taku Izumi84f4ee92010-04-27 14:39:08 +0000131};
132
Bruce Allane921eb12012-11-28 09:28:37 +0000133/**
Taku Izumi84f4ee92010-04-27 14:39:08 +0000134 * e1000_regdump - register printout routine
Bruce Allane921eb12012-11-28 09:28:37 +0000135 * @hw: pointer to the HW structure
136 * @reginfo: pointer to the register info table
137 **/
Taku Izumi84f4ee92010-04-27 14:39:08 +0000138static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo)
139{
140 int n = 0;
141 char rname[16];
142 u32 regs[8];
143
144 switch (reginfo->ofs) {
145 case E1000_RXDCTL(0):
146 for (n = 0; n < 2; n++)
147 regs[n] = __er32(hw, E1000_RXDCTL(n));
148 break;
149 case E1000_TXDCTL(0):
150 for (n = 0; n < 2; n++)
151 regs[n] = __er32(hw, E1000_TXDCTL(n));
152 break;
153 case E1000_TARC(0):
154 for (n = 0; n < 2; n++)
155 regs[n] = __er32(hw, E1000_TARC(n));
156 break;
157 default:
Jeff Kirsheref456f82011-11-03 11:40:28 +0000158 pr_info("%-15s %08x\n",
159 reginfo->name, __er32(hw, reginfo->ofs));
Taku Izumi84f4ee92010-04-27 14:39:08 +0000160 return;
161 }
162
163 snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]");
Jeff Kirsheref456f82011-11-03 11:40:28 +0000164 pr_info("%-15s %08x %08x\n", rname, regs[0], regs[1]);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000165}
166
Emil Tantilovf0c5dad2012-08-01 08:12:21 +0000167static void e1000e_dump_ps_pages(struct e1000_adapter *adapter,
168 struct e1000_buffer *bi)
169{
170 int i;
171 struct e1000_ps_page *ps_page;
172
173 for (i = 0; i < adapter->rx_ps_pages; i++) {
174 ps_page = &bi->ps_pages[i];
175
176 if (ps_page->page) {
177 pr_info("packet dump for ps_page %d:\n", i);
178 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS,
179 16, 1, page_address(ps_page->page),
180 PAGE_SIZE, true);
181 }
182 }
183}
184
Bruce Allane921eb12012-11-28 09:28:37 +0000185/**
Bruce Allanaf667a22010-12-31 06:10:01 +0000186 * e1000e_dump - Print registers, Tx-ring and Rx-ring
Bruce Allane921eb12012-11-28 09:28:37 +0000187 * @adapter: board private structure
188 **/
Taku Izumi84f4ee92010-04-27 14:39:08 +0000189static void e1000e_dump(struct e1000_adapter *adapter)
190{
191 struct net_device *netdev = adapter->netdev;
192 struct e1000_hw *hw = &adapter->hw;
193 struct e1000_reg_info *reginfo;
194 struct e1000_ring *tx_ring = adapter->tx_ring;
195 struct e1000_tx_desc *tx_desc;
Bruce Allanaf667a22010-12-31 06:10:01 +0000196 struct my_u0 {
Bruce Allane885d762012-01-31 06:37:32 +0000197 __le64 a;
198 __le64 b;
Bruce Allanaf667a22010-12-31 06:10:01 +0000199 } *u0;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000200 struct e1000_buffer *buffer_info;
201 struct e1000_ring *rx_ring = adapter->rx_ring;
202 union e1000_rx_desc_packet_split *rx_desc_ps;
Bruce Allan5f450212011-07-22 06:21:46 +0000203 union e1000_rx_desc_extended *rx_desc;
Bruce Allanaf667a22010-12-31 06:10:01 +0000204 struct my_u1 {
Bruce Allane885d762012-01-31 06:37:32 +0000205 __le64 a;
206 __le64 b;
207 __le64 c;
208 __le64 d;
Bruce Allanaf667a22010-12-31 06:10:01 +0000209 } *u1;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000210 u32 staterr;
211 int i = 0;
212
213 if (!netif_msg_hw(adapter))
214 return;
215
216 /* Print netdevice Info */
217 if (netdev) {
218 dev_info(&adapter->pdev->dev, "Net device Info\n");
Jeff Kirsheref456f82011-11-03 11:40:28 +0000219 pr_info("Device Name state trans_start last_rx\n");
Bruce Allane5fe2542013-02-20 04:06:27 +0000220 pr_info("%-15s %016lX %016lX %016lX\n", netdev->name,
221 netdev->state, netdev->trans_start, netdev->last_rx);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000222 }
223
224 /* Print Registers */
225 dev_info(&adapter->pdev->dev, "Register Dump\n");
Jeff Kirsheref456f82011-11-03 11:40:28 +0000226 pr_info(" Register Name Value\n");
Taku Izumi84f4ee92010-04-27 14:39:08 +0000227 for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl;
228 reginfo->name; reginfo++) {
229 e1000_regdump(hw, reginfo);
230 }
231
Bruce Allanaf667a22010-12-31 06:10:01 +0000232 /* Print Tx Ring Summary */
Taku Izumi84f4ee92010-04-27 14:39:08 +0000233 if (!netdev || !netif_running(netdev))
Bruce Allanfe1e9802012-01-31 06:37:54 +0000234 return;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000235
Bruce Allanaf667a22010-12-31 06:10:01 +0000236 dev_info(&adapter->pdev->dev, "Tx Ring Summary\n");
Jeff Kirsheref456f82011-11-03 11:40:28 +0000237 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
Taku Izumi84f4ee92010-04-27 14:39:08 +0000238 buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean];
Jeff Kirsheref456f82011-11-03 11:40:28 +0000239 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n",
240 0, tx_ring->next_to_use, tx_ring->next_to_clean,
241 (unsigned long long)buffer_info->dma,
242 buffer_info->length,
243 buffer_info->next_to_watch,
244 (unsigned long long)buffer_info->time_stamp);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000245
Bruce Allanaf667a22010-12-31 06:10:01 +0000246 /* Print Tx Ring */
Taku Izumi84f4ee92010-04-27 14:39:08 +0000247 if (!netif_msg_tx_done(adapter))
248 goto rx_ring_summary;
249
Bruce Allanaf667a22010-12-31 06:10:01 +0000250 dev_info(&adapter->pdev->dev, "Tx Ring Dump\n");
Taku Izumi84f4ee92010-04-27 14:39:08 +0000251
252 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
253 *
254 * Legacy Transmit Descriptor
255 * +--------------------------------------------------------------+
256 * 0 | Buffer Address [63:0] (Reserved on Write Back) |
257 * +--------------------------------------------------------------+
258 * 8 | Special | CSS | Status | CMD | CSO | Length |
259 * +--------------------------------------------------------------+
260 * 63 48 47 36 35 32 31 24 23 16 15 0
261 *
262 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
263 * 63 48 47 40 39 32 31 16 15 8 7 0
264 * +----------------------------------------------------------------+
265 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
266 * +----------------------------------------------------------------+
267 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
268 * +----------------------------------------------------------------+
269 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
270 *
271 * Extended Data Descriptor (DTYP=0x1)
272 * +----------------------------------------------------------------+
273 * 0 | Buffer Address [63:0] |
274 * +----------------------------------------------------------------+
275 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
276 * +----------------------------------------------------------------+
277 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
278 */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000279 pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n");
280 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n");
281 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 +0000282 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
Jeff Kirsheref456f82011-11-03 11:40:28 +0000283 const char *next_desc;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000284 tx_desc = E1000_TX_DESC(*tx_ring, i);
285 buffer_info = &tx_ring->buffer_info[i];
286 u0 = (struct my_u0 *)tx_desc;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000287 if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean)
Jeff Kirsheref456f82011-11-03 11:40:28 +0000288 next_desc = " NTC/U";
Taku Izumi84f4ee92010-04-27 14:39:08 +0000289 else if (i == tx_ring->next_to_use)
Jeff Kirsheref456f82011-11-03 11:40:28 +0000290 next_desc = " NTU";
Taku Izumi84f4ee92010-04-27 14:39:08 +0000291 else if (i == tx_ring->next_to_clean)
Jeff Kirsheref456f82011-11-03 11:40:28 +0000292 next_desc = " NTC";
Taku Izumi84f4ee92010-04-27 14:39:08 +0000293 else
Jeff Kirsheref456f82011-11-03 11:40:28 +0000294 next_desc = "";
295 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n",
296 (!(le64_to_cpu(u0->b) & (1 << 29)) ? 'l' :
297 ((le64_to_cpu(u0->b) & (1 << 20)) ? 'd' : 'c')),
298 i,
299 (unsigned long long)le64_to_cpu(u0->a),
300 (unsigned long long)le64_to_cpu(u0->b),
301 (unsigned long long)buffer_info->dma,
302 buffer_info->length, buffer_info->next_to_watch,
303 (unsigned long long)buffer_info->time_stamp,
304 buffer_info->skb, next_desc);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000305
Emil Tantilovf0c5dad2012-08-01 08:12:21 +0000306 if (netif_msg_pktdata(adapter) && buffer_info->skb)
Taku Izumi84f4ee92010-04-27 14:39:08 +0000307 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS,
Emil Tantilovf0c5dad2012-08-01 08:12:21 +0000308 16, 1, buffer_info->skb->data,
309 buffer_info->skb->len, true);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000310 }
311
Bruce Allanaf667a22010-12-31 06:10:01 +0000312 /* Print Rx Ring Summary */
Taku Izumi84f4ee92010-04-27 14:39:08 +0000313rx_ring_summary:
Bruce Allanaf667a22010-12-31 06:10:01 +0000314 dev_info(&adapter->pdev->dev, "Rx Ring Summary\n");
Jeff Kirsheref456f82011-11-03 11:40:28 +0000315 pr_info("Queue [NTU] [NTC]\n");
316 pr_info(" %5d %5X %5X\n",
317 0, rx_ring->next_to_use, rx_ring->next_to_clean);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000318
Bruce Allanaf667a22010-12-31 06:10:01 +0000319 /* Print Rx Ring */
Taku Izumi84f4ee92010-04-27 14:39:08 +0000320 if (!netif_msg_rx_status(adapter))
Bruce Allanfe1e9802012-01-31 06:37:54 +0000321 return;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000322
Bruce Allanaf667a22010-12-31 06:10:01 +0000323 dev_info(&adapter->pdev->dev, "Rx Ring Dump\n");
Taku Izumi84f4ee92010-04-27 14:39:08 +0000324 switch (adapter->rx_ps_pages) {
325 case 1:
326 case 2:
327 case 3:
328 /* [Extended] Packet Split Receive Descriptor Format
329 *
330 * +-----------------------------------------------------+
331 * 0 | Buffer Address 0 [63:0] |
332 * +-----------------------------------------------------+
333 * 8 | Buffer Address 1 [63:0] |
334 * +-----------------------------------------------------+
335 * 16 | Buffer Address 2 [63:0] |
336 * +-----------------------------------------------------+
337 * 24 | Buffer Address 3 [63:0] |
338 * +-----------------------------------------------------+
339 */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000340 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 +0000341 /* [Extended] Receive Descriptor (Write-Back) Format
342 *
343 * 63 48 47 32 31 13 12 8 7 4 3 0
344 * +------------------------------------------------------+
345 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
346 * | Checksum | Ident | | Queue | | Type |
347 * +------------------------------------------------------+
348 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
349 * +------------------------------------------------------+
350 * 63 48 47 32 31 20 19 0
351 */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000352 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 +0000353 for (i = 0; i < rx_ring->count; i++) {
Jeff Kirsheref456f82011-11-03 11:40:28 +0000354 const char *next_desc;
Taku Izumi84f4ee92010-04-27 14:39:08 +0000355 buffer_info = &rx_ring->buffer_info[i];
356 rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i);
357 u1 = (struct my_u1 *)rx_desc_ps;
358 staterr =
Bruce Allanaf667a22010-12-31 06:10:01 +0000359 le32_to_cpu(rx_desc_ps->wb.middle.status_error);
Jeff Kirsheref456f82011-11-03 11:40:28 +0000360
361 if (i == rx_ring->next_to_use)
362 next_desc = " NTU";
363 else if (i == rx_ring->next_to_clean)
364 next_desc = " NTC";
365 else
366 next_desc = "";
367
Taku Izumi84f4ee92010-04-27 14:39:08 +0000368 if (staterr & E1000_RXD_STAT_DD) {
369 /* Descriptor Done */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000370 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n",
371 "RWB", i,
372 (unsigned long long)le64_to_cpu(u1->a),
373 (unsigned long long)le64_to_cpu(u1->b),
374 (unsigned long long)le64_to_cpu(u1->c),
375 (unsigned long long)le64_to_cpu(u1->d),
376 buffer_info->skb, next_desc);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000377 } else {
Jeff Kirsheref456f82011-11-03 11:40:28 +0000378 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n",
379 "R ", i,
380 (unsigned long long)le64_to_cpu(u1->a),
381 (unsigned long long)le64_to_cpu(u1->b),
382 (unsigned long long)le64_to_cpu(u1->c),
383 (unsigned long long)le64_to_cpu(u1->d),
384 (unsigned long long)buffer_info->dma,
385 buffer_info->skb, next_desc);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000386
387 if (netif_msg_pktdata(adapter))
Emil Tantilovf0c5dad2012-08-01 08:12:21 +0000388 e1000e_dump_ps_pages(adapter,
389 buffer_info);
Taku Izumi84f4ee92010-04-27 14:39:08 +0000390 }
Taku Izumi84f4ee92010-04-27 14:39:08 +0000391 }
392 break;
393 default:
394 case 0:
Bruce Allan5f450212011-07-22 06:21:46 +0000395 /* Extended Receive Descriptor (Read) Format
Taku Izumi84f4ee92010-04-27 14:39:08 +0000396 *
Bruce Allan5f450212011-07-22 06:21:46 +0000397 * +-----------------------------------------------------+
398 * 0 | Buffer Address [63:0] |
399 * +-----------------------------------------------------+
400 * 8 | Reserved |
401 * +-----------------------------------------------------+
Taku Izumi84f4ee92010-04-27 14:39:08 +0000402 */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000403 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 +0000404 /* Extended Receive Descriptor (Write-Back) Format
405 *
406 * 63 48 47 32 31 24 23 4 3 0
407 * +------------------------------------------------------+
408 * | RSS Hash | | | |
409 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS |
410 * | Packet | IP | | | Type |
411 * | Checksum | Ident | | | |
412 * +------------------------------------------------------+
413 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
414 * +------------------------------------------------------+
415 * 63 48 47 32 31 20 19 0
416 */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000417 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 +0000418
419 for (i = 0; i < rx_ring->count; i++) {
Jeff Kirsheref456f82011-11-03 11:40:28 +0000420 const char *next_desc;
421
Taku Izumi84f4ee92010-04-27 14:39:08 +0000422 buffer_info = &rx_ring->buffer_info[i];
Bruce Allan5f450212011-07-22 06:21:46 +0000423 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
424 u1 = (struct my_u1 *)rx_desc;
425 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Jeff Kirsheref456f82011-11-03 11:40:28 +0000426
427 if (i == rx_ring->next_to_use)
428 next_desc = " NTU";
429 else if (i == rx_ring->next_to_clean)
430 next_desc = " NTC";
431 else
432 next_desc = "";
433
Bruce Allan5f450212011-07-22 06:21:46 +0000434 if (staterr & E1000_RXD_STAT_DD) {
435 /* Descriptor Done */
Jeff Kirsheref456f82011-11-03 11:40:28 +0000436 pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n",
437 "RWB", i,
438 (unsigned long long)le64_to_cpu(u1->a),
439 (unsigned long long)le64_to_cpu(u1->b),
440 buffer_info->skb, next_desc);
Bruce Allan5f450212011-07-22 06:21:46 +0000441 } else {
Jeff Kirsheref456f82011-11-03 11:40:28 +0000442 pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n",
443 "R ", i,
444 (unsigned long long)le64_to_cpu(u1->a),
445 (unsigned long long)le64_to_cpu(u1->b),
446 (unsigned long long)buffer_info->dma,
447 buffer_info->skb, next_desc);
Bruce Allan5f450212011-07-22 06:21:46 +0000448
Emil Tantilovf0c5dad2012-08-01 08:12:21 +0000449 if (netif_msg_pktdata(adapter) &&
450 buffer_info->skb)
Bruce Allan5f450212011-07-22 06:21:46 +0000451 print_hex_dump(KERN_INFO, "",
452 DUMP_PREFIX_ADDRESS, 16,
453 1,
Emil Tantilovf0c5dad2012-08-01 08:12:21 +0000454 buffer_info->skb->data,
Bruce Allan5f450212011-07-22 06:21:46 +0000455 adapter->rx_buffer_len,
456 true);
457 }
Taku Izumi84f4ee92010-04-27 14:39:08 +0000458 }
459 }
Taku Izumi84f4ee92010-04-27 14:39:08 +0000460}
461
Auke Kokbc7f75f2007-09-17 12:30:59 -0700462/**
463 * e1000_desc_unused - calculate if we have unused descriptors
464 **/
465static int e1000_desc_unused(struct e1000_ring *ring)
466{
467 if (ring->next_to_clean > ring->next_to_use)
468 return ring->next_to_clean - ring->next_to_use - 1;
469
470 return ring->count + ring->next_to_clean - ring->next_to_use - 1;
471}
472
473/**
Bruce Allanb67e1912012-12-27 08:32:33 +0000474 * e1000e_systim_to_hwtstamp - convert system time value to hw time stamp
475 * @adapter: board private structure
476 * @hwtstamps: time stamp structure to update
477 * @systim: unsigned 64bit system time value.
478 *
479 * Convert the system time value stored in the RX/TXSTMP registers into a
480 * hwtstamp which can be used by the upper level time stamping functions.
481 *
482 * The 'systim_lock' spinlock is used to protect the consistency of the
483 * system time value. This is needed because reading the 64 bit time
484 * value involves reading two 32 bit registers. The first read latches the
485 * value.
486 **/
487static void e1000e_systim_to_hwtstamp(struct e1000_adapter *adapter,
488 struct skb_shared_hwtstamps *hwtstamps,
489 u64 systim)
490{
491 u64 ns;
492 unsigned long flags;
493
494 spin_lock_irqsave(&adapter->systim_lock, flags);
495 ns = timecounter_cyc2time(&adapter->tc, systim);
496 spin_unlock_irqrestore(&adapter->systim_lock, flags);
497
498 memset(hwtstamps, 0, sizeof(*hwtstamps));
499 hwtstamps->hwtstamp = ns_to_ktime(ns);
500}
501
502/**
503 * e1000e_rx_hwtstamp - utility function which checks for Rx time stamp
504 * @adapter: board private structure
505 * @status: descriptor extended error and status field
506 * @skb: particular skb to include time stamp
507 *
508 * If the time stamp is valid, convert it into the timecounter ns value
509 * and store that result into the shhwtstamps structure which is passed
510 * up the network stack.
511 **/
512static void e1000e_rx_hwtstamp(struct e1000_adapter *adapter, u32 status,
513 struct sk_buff *skb)
514{
515 struct e1000_hw *hw = &adapter->hw;
516 u64 rxstmp;
517
518 if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP) ||
519 !(status & E1000_RXDEXT_STATERR_TST) ||
520 !(er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID))
521 return;
522
523 /* The Rx time stamp registers contain the time stamp. No other
524 * received packet will be time stamped until the Rx time stamp
525 * registers are read. Because only one packet can be time stamped
526 * at a time, the register values must belong to this packet and
527 * therefore none of the other additional attributes need to be
528 * compared.
529 */
530 rxstmp = (u64)er32(RXSTMPL);
531 rxstmp |= (u64)er32(RXSTMPH) << 32;
532 e1000e_systim_to_hwtstamp(adapter, skb_hwtstamps(skb), rxstmp);
533
534 adapter->flags2 &= ~FLAG2_CHECK_RX_HWTSTAMP;
535}
536
537/**
Bruce Allanad680762008-03-28 09:15:03 -0700538 * e1000_receive_skb - helper function to handle Rx indications
Auke Kokbc7f75f2007-09-17 12:30:59 -0700539 * @adapter: board private structure
Bruce Allanb67e1912012-12-27 08:32:33 +0000540 * @staterr: descriptor extended error and status field as written by hardware
Auke Kokbc7f75f2007-09-17 12:30:59 -0700541 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
542 * @skb: pointer to sk_buff to be indicated to stack
543 **/
544static void e1000_receive_skb(struct e1000_adapter *adapter,
Bruce Allanaf667a22010-12-31 06:10:01 +0000545 struct net_device *netdev, struct sk_buff *skb,
Bruce Allanb67e1912012-12-27 08:32:33 +0000546 u32 staterr, __le16 vlan)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700547{
Jeff Kirsher86d70e52011-03-25 16:01:01 +0000548 u16 tag = le16_to_cpu(vlan);
Bruce Allanb67e1912012-12-27 08:32:33 +0000549
550 e1000e_rx_hwtstamp(adapter, staterr, skb);
551
Auke Kokbc7f75f2007-09-17 12:30:59 -0700552 skb->protocol = eth_type_trans(skb, netdev);
553
Bruce Allanb67e1912012-12-27 08:32:33 +0000554 if (staterr & E1000_RXD_STAT_VP)
Patrick McHardy86a9bad2013-04-19 02:04:30 +0000555 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
Jeff Kirsher86d70e52011-03-25 16:01:01 +0000556
557 napi_gro_receive(&adapter->napi, skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700558}
559
560/**
Bruce Allanaf667a22010-12-31 06:10:01 +0000561 * e1000_rx_checksum - Receive Checksum Offload
Bruce Allanafd12932012-01-05 00:34:05 +0000562 * @adapter: board private structure
563 * @status_err: receive descriptor status and error fields
564 * @csum: receive descriptor csum field
565 * @sk_buff: socket buffer with received data
Auke Kokbc7f75f2007-09-17 12:30:59 -0700566 **/
567static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
Bruce Allan2e1706f2012-06-30 20:02:42 +0000568 struct sk_buff *skb)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700569{
570 u16 status = (u16)status_err;
571 u8 errors = (u8)(status_err >> 24);
Eric Dumazetbc8acf22010-09-02 13:07:41 -0700572
573 skb_checksum_none_assert(skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700574
Bruce Allanafd12932012-01-05 00:34:05 +0000575 /* Rx checksum disabled */
576 if (!(adapter->netdev->features & NETIF_F_RXCSUM))
577 return;
578
Auke Kokbc7f75f2007-09-17 12:30:59 -0700579 /* Ignore Checksum bit is set */
580 if (status & E1000_RXD_STAT_IXSM)
581 return;
Bruce Allanafd12932012-01-05 00:34:05 +0000582
Bruce Allan2e1706f2012-06-30 20:02:42 +0000583 /* TCP/UDP checksum error bit or IP checksum error bit is set */
584 if (errors & (E1000_RXD_ERR_TCPE | E1000_RXD_ERR_IPE)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700585 /* let the stack verify checksum errors */
586 adapter->hw_csum_err++;
587 return;
588 }
589
590 /* TCP/UDP Checksum has not been calculated */
591 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
592 return;
593
594 /* It must be a TCP or UDP packet with a valid checksum */
Bruce Allan2e1706f2012-06-30 20:02:42 +0000595 skb->ip_summed = CHECKSUM_UNNECESSARY;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700596 adapter->hw_csum_good++;
597}
598
Bruce Allan55aa6982011-12-16 00:45:45 +0000599static void e1000e_update_rdt_wa(struct e1000_ring *rx_ring, unsigned int i)
David S. Miller823dcd22011-08-20 10:39:12 -0700600{
Bruce Allan55aa6982011-12-16 00:45:45 +0000601 struct e1000_adapter *adapter = rx_ring->adapter;
David S. Miller823dcd22011-08-20 10:39:12 -0700602 struct e1000_hw *hw = &adapter->hw;
Bruce Allanbdc125f2012-03-20 03:47:52 +0000603 s32 ret_val = __ew32_prepare(hw);
David S. Miller823dcd22011-08-20 10:39:12 -0700604
Bruce Allanbdc125f2012-03-20 03:47:52 +0000605 writel(i, rx_ring->tail);
606
607 if (unlikely(!ret_val && (i != readl(rx_ring->tail)))) {
David S. Miller823dcd22011-08-20 10:39:12 -0700608 u32 rctl = er32(RCTL);
609 ew32(RCTL, rctl & ~E1000_RCTL_EN);
610 e_err("ME firmware caused invalid RDT - resetting\n");
611 schedule_work(&adapter->reset_task);
612 }
613}
614
Bruce Allan55aa6982011-12-16 00:45:45 +0000615static void e1000e_update_tdt_wa(struct e1000_ring *tx_ring, unsigned int i)
David S. Miller823dcd22011-08-20 10:39:12 -0700616{
Bruce Allan55aa6982011-12-16 00:45:45 +0000617 struct e1000_adapter *adapter = tx_ring->adapter;
David S. Miller823dcd22011-08-20 10:39:12 -0700618 struct e1000_hw *hw = &adapter->hw;
Bruce Allanbdc125f2012-03-20 03:47:52 +0000619 s32 ret_val = __ew32_prepare(hw);
David S. Miller823dcd22011-08-20 10:39:12 -0700620
Bruce Allanbdc125f2012-03-20 03:47:52 +0000621 writel(i, tx_ring->tail);
622
623 if (unlikely(!ret_val && (i != readl(tx_ring->tail)))) {
David S. Miller823dcd22011-08-20 10:39:12 -0700624 u32 tctl = er32(TCTL);
625 ew32(TCTL, tctl & ~E1000_TCTL_EN);
626 e_err("ME firmware caused invalid TDT - resetting\n");
627 schedule_work(&adapter->reset_task);
628 }
629}
630
631/**
Bruce Allan5f450212011-07-22 06:21:46 +0000632 * e1000_alloc_rx_buffers - Replace used receive buffers
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(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;
Bruce Allan5f450212011-07-22 06:21:46 +0000641 union e1000_rx_desc_extended *rx_desc;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700642 struct e1000_buffer *buffer_info;
643 struct sk_buff *skb;
644 unsigned int i;
Eric Dumazet89d71a62009-10-13 05:34:20 +0000645 unsigned int bufsz = adapter->rx_buffer_len;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700646
647 i = rx_ring->next_to_use;
648 buffer_info = &rx_ring->buffer_info[i];
649
650 while (cleaned_count--) {
651 skb = buffer_info->skb;
652 if (skb) {
653 skb_trim(skb, 0);
654 goto map_skb;
655 }
656
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000657 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700658 if (!skb) {
659 /* Better luck next round */
660 adapter->alloc_rx_buff_failed++;
661 break;
662 }
663
Auke Kokbc7f75f2007-09-17 12:30:59 -0700664 buffer_info->skb = skb;
665map_skb:
Nick Nunley0be3f552010-04-27 13:09:05 +0000666 buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
Auke Kokbc7f75f2007-09-17 12:30:59 -0700667 adapter->rx_buffer_len,
Nick Nunley0be3f552010-04-27 13:09:05 +0000668 DMA_FROM_DEVICE);
669 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
Bruce Allanaf667a22010-12-31 06:10:01 +0000670 dev_err(&pdev->dev, "Rx DMA map failed\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -0700671 adapter->rx_dma_failed++;
672 break;
673 }
674
Bruce Allan5f450212011-07-22 06:21:46 +0000675 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
676 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700677
Tom Herbert50849d72010-05-05 14:02:49 +0000678 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
Bruce Allane921eb12012-11-28 09:28:37 +0000679 /* Force memory writes to complete before letting h/w
Tom Herbert50849d72010-05-05 14:02:49 +0000680 * know there are new descriptors to fetch. (Only
681 * applicable for weak-ordered memory model archs,
682 * such as IA-64).
683 */
684 wmb();
David S. Miller823dcd22011-08-20 10:39:12 -0700685 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
Bruce Allan55aa6982011-12-16 00:45:45 +0000686 e1000e_update_rdt_wa(rx_ring, i);
David S. Miller823dcd22011-08-20 10:39:12 -0700687 else
Bruce Allanc5083cf2011-12-16 00:45:40 +0000688 writel(i, rx_ring->tail);
Tom Herbert50849d72010-05-05 14:02:49 +0000689 }
Auke Kokbc7f75f2007-09-17 12:30:59 -0700690 i++;
691 if (i == rx_ring->count)
692 i = 0;
693 buffer_info = &rx_ring->buffer_info[i];
694 }
695
Tom Herbert50849d72010-05-05 14:02:49 +0000696 rx_ring->next_to_use = i;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700697}
698
699/**
700 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
Bruce Allan55aa6982011-12-16 00:45:45 +0000701 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -0700702 **/
Bruce Allan55aa6982011-12-16 00:45:45 +0000703static void e1000_alloc_rx_buffers_ps(struct e1000_ring *rx_ring,
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000704 int cleaned_count, gfp_t gfp)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700705{
Bruce Allan55aa6982011-12-16 00:45:45 +0000706 struct e1000_adapter *adapter = rx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700707 struct net_device *netdev = adapter->netdev;
708 struct pci_dev *pdev = adapter->pdev;
709 union e1000_rx_desc_packet_split *rx_desc;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700710 struct e1000_buffer *buffer_info;
711 struct e1000_ps_page *ps_page;
712 struct sk_buff *skb;
713 unsigned int i, j;
714
715 i = rx_ring->next_to_use;
716 buffer_info = &rx_ring->buffer_info[i];
717
718 while (cleaned_count--) {
719 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
720
721 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
Auke Kok47f44e42007-10-25 13:57:44 -0700722 ps_page = &buffer_info->ps_pages[j];
723 if (j >= adapter->rx_ps_pages) {
724 /* all unused desc entries get hw null ptr */
Bruce Allanaf667a22010-12-31 06:10:01 +0000725 rx_desc->read.buffer_addr[j + 1] =
726 ~cpu_to_le64(0);
Auke Kok47f44e42007-10-25 13:57:44 -0700727 continue;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700728 }
Auke Kok47f44e42007-10-25 13:57:44 -0700729 if (!ps_page->page) {
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000730 ps_page->page = alloc_page(gfp);
Auke Kok47f44e42007-10-25 13:57:44 -0700731 if (!ps_page->page) {
732 adapter->alloc_rx_buff_failed++;
733 goto no_buffers;
734 }
Nick Nunley0be3f552010-04-27 13:09:05 +0000735 ps_page->dma = dma_map_page(&pdev->dev,
736 ps_page->page,
737 0, PAGE_SIZE,
738 DMA_FROM_DEVICE);
739 if (dma_mapping_error(&pdev->dev,
740 ps_page->dma)) {
Auke Kok47f44e42007-10-25 13:57:44 -0700741 dev_err(&adapter->pdev->dev,
Bruce Allanaf667a22010-12-31 06:10:01 +0000742 "Rx DMA page map failed\n");
Auke Kok47f44e42007-10-25 13:57:44 -0700743 adapter->rx_dma_failed++;
744 goto no_buffers;
745 }
746 }
Bruce Allane921eb12012-11-28 09:28:37 +0000747 /* Refresh the desc even if buffer_addrs
Auke Kok47f44e42007-10-25 13:57:44 -0700748 * didn't change because each write-back
749 * erases this info.
750 */
Bruce Allanaf667a22010-12-31 06:10:01 +0000751 rx_desc->read.buffer_addr[j + 1] =
752 cpu_to_le64(ps_page->dma);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700753 }
754
Bruce Allane5fe2542013-02-20 04:06:27 +0000755 skb = __netdev_alloc_skb_ip_align(netdev, adapter->rx_ps_bsize0,
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000756 gfp);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700757
758 if (!skb) {
759 adapter->alloc_rx_buff_failed++;
760 break;
761 }
762
Auke Kokbc7f75f2007-09-17 12:30:59 -0700763 buffer_info->skb = skb;
Nick Nunley0be3f552010-04-27 13:09:05 +0000764 buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
Auke Kokbc7f75f2007-09-17 12:30:59 -0700765 adapter->rx_ps_bsize0,
Nick Nunley0be3f552010-04-27 13:09:05 +0000766 DMA_FROM_DEVICE);
767 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
Bruce Allanaf667a22010-12-31 06:10:01 +0000768 dev_err(&pdev->dev, "Rx DMA map failed\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -0700769 adapter->rx_dma_failed++;
770 /* cleanup skb */
771 dev_kfree_skb_any(skb);
772 buffer_info->skb = NULL;
773 break;
774 }
775
776 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
777
Tom Herbert50849d72010-05-05 14:02:49 +0000778 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
Bruce Allane921eb12012-11-28 09:28:37 +0000779 /* Force memory writes to complete before letting h/w
Tom Herbert50849d72010-05-05 14:02:49 +0000780 * know there are new descriptors to fetch. (Only
781 * applicable for weak-ordered memory model archs,
782 * such as IA-64).
783 */
784 wmb();
David S. Miller823dcd22011-08-20 10:39:12 -0700785 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
Bruce Allan55aa6982011-12-16 00:45:45 +0000786 e1000e_update_rdt_wa(rx_ring, i << 1);
David S. Miller823dcd22011-08-20 10:39:12 -0700787 else
Bruce Allanc5083cf2011-12-16 00:45:40 +0000788 writel(i << 1, rx_ring->tail);
Tom Herbert50849d72010-05-05 14:02:49 +0000789 }
790
Auke Kokbc7f75f2007-09-17 12:30:59 -0700791 i++;
792 if (i == rx_ring->count)
793 i = 0;
794 buffer_info = &rx_ring->buffer_info[i];
795 }
796
797no_buffers:
Tom Herbert50849d72010-05-05 14:02:49 +0000798 rx_ring->next_to_use = i;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700799}
800
801/**
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700802 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
Bruce Allan55aa6982011-12-16 00:45:45 +0000803 * @rx_ring: Rx descriptor ring
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700804 * @cleaned_count: number of buffers to allocate this pass
805 **/
806
Bruce Allan55aa6982011-12-16 00:45:45 +0000807static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring *rx_ring,
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000808 int cleaned_count, gfp_t gfp)
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700809{
Bruce Allan55aa6982011-12-16 00:45:45 +0000810 struct e1000_adapter *adapter = rx_ring->adapter;
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700811 struct net_device *netdev = adapter->netdev;
812 struct pci_dev *pdev = adapter->pdev;
Bruce Allan5f450212011-07-22 06:21:46 +0000813 union e1000_rx_desc_extended *rx_desc;
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700814 struct e1000_buffer *buffer_info;
815 struct sk_buff *skb;
816 unsigned int i;
Bruce Allan2a2293b2012-12-05 06:26:35 +0000817 unsigned int bufsz = 256 - 16; /* for skb_reserve */
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700818
819 i = rx_ring->next_to_use;
820 buffer_info = &rx_ring->buffer_info[i];
821
822 while (cleaned_count--) {
823 skb = buffer_info->skb;
824 if (skb) {
825 skb_trim(skb, 0);
826 goto check_page;
827 }
828
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000829 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp);
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700830 if (unlikely(!skb)) {
831 /* Better luck next round */
832 adapter->alloc_rx_buff_failed++;
833 break;
834 }
835
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700836 buffer_info->skb = skb;
837check_page:
838 /* allocate a new page if necessary */
839 if (!buffer_info->page) {
Jeff Kirsherc2fed992011-07-12 16:10:12 +0000840 buffer_info->page = alloc_page(gfp);
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700841 if (unlikely(!buffer_info->page)) {
842 adapter->alloc_rx_buff_failed++;
843 break;
844 }
845 }
846
Christoph Paasch37287fae2013-03-20 08:59:46 +0000847 if (!buffer_info->dma) {
Nick Nunley0be3f552010-04-27 13:09:05 +0000848 buffer_info->dma = dma_map_page(&pdev->dev,
Bruce Allanf0ff4392013-02-20 04:05:39 +0000849 buffer_info->page, 0,
850 PAGE_SIZE,
Nick Nunley0be3f552010-04-27 13:09:05 +0000851 DMA_FROM_DEVICE);
Christoph Paasch37287fae2013-03-20 08:59:46 +0000852 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
853 adapter->alloc_rx_buff_failed++;
854 break;
855 }
856 }
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700857
Bruce Allan5f450212011-07-22 06:21:46 +0000858 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
859 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700860
861 if (unlikely(++i == rx_ring->count))
862 i = 0;
863 buffer_info = &rx_ring->buffer_info[i];
864 }
865
866 if (likely(rx_ring->next_to_use != i)) {
867 rx_ring->next_to_use = i;
868 if (unlikely(i-- == 0))
869 i = (rx_ring->count - 1);
870
871 /* Force memory writes to complete before letting h/w
872 * know there are new descriptors to fetch. (Only
873 * applicable for weak-ordered memory model archs,
Bruce Allane921eb12012-11-28 09:28:37 +0000874 * such as IA-64).
875 */
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700876 wmb();
David S. Miller823dcd22011-08-20 10:39:12 -0700877 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
Bruce Allan55aa6982011-12-16 00:45:45 +0000878 e1000e_update_rdt_wa(rx_ring, i);
David S. Miller823dcd22011-08-20 10:39:12 -0700879 else
Bruce Allanc5083cf2011-12-16 00:45:40 +0000880 writel(i, rx_ring->tail);
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700881 }
882}
883
Bruce Allan70495a52012-01-11 01:26:50 +0000884static inline void e1000_rx_hash(struct net_device *netdev, __le32 rss,
885 struct sk_buff *skb)
886{
887 if (netdev->features & NETIF_F_RXHASH)
888 skb->rxhash = le32_to_cpu(rss);
889}
890
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700891/**
Bruce Allan55aa6982011-12-16 00:45:45 +0000892 * e1000_clean_rx_irq - Send received data up the network stack
893 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -0700894 *
895 * the return value indicates whether actual cleaning was done, there
896 * is no guarantee that everything was cleaned
897 **/
Bruce Allan55aa6982011-12-16 00:45:45 +0000898static bool e1000_clean_rx_irq(struct e1000_ring *rx_ring, int *work_done,
899 int work_to_do)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700900{
Bruce Allan55aa6982011-12-16 00:45:45 +0000901 struct e1000_adapter *adapter = rx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700902 struct net_device *netdev = adapter->netdev;
903 struct pci_dev *pdev = adapter->pdev;
Bruce Allan3bb99fe2009-11-20 23:25:07 +0000904 struct e1000_hw *hw = &adapter->hw;
Bruce Allan5f450212011-07-22 06:21:46 +0000905 union e1000_rx_desc_extended *rx_desc, *next_rxd;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700906 struct e1000_buffer *buffer_info, *next_buffer;
Bruce Allan5f450212011-07-22 06:21:46 +0000907 u32 length, staterr;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700908 unsigned int i;
909 int cleaned_count = 0;
Rusty Russell3db1cd52011-12-19 13:56:45 +0000910 bool cleaned = false;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700911 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
912
913 i = rx_ring->next_to_clean;
Bruce Allan5f450212011-07-22 06:21:46 +0000914 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
915 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700916 buffer_info = &rx_ring->buffer_info[i];
917
Bruce Allan5f450212011-07-22 06:21:46 +0000918 while (staterr & E1000_RXD_STAT_DD) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700919 struct sk_buff *skb;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700920
921 if (*work_done >= work_to_do)
922 break;
923 (*work_done)++;
Jeff Kirsher2d0bb1c2010-08-08 16:02:31 +0000924 rmb(); /* read descriptor and rx_buffer_info after status DD */
Auke Kokbc7f75f2007-09-17 12:30:59 -0700925
Auke Kokbc7f75f2007-09-17 12:30:59 -0700926 skb = buffer_info->skb;
927 buffer_info->skb = NULL;
928
929 prefetch(skb->data - NET_IP_ALIGN);
930
931 i++;
932 if (i == rx_ring->count)
933 i = 0;
Bruce Allan5f450212011-07-22 06:21:46 +0000934 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700935 prefetch(next_rxd);
936
937 next_buffer = &rx_ring->buffer_info[i];
938
Rusty Russell3db1cd52011-12-19 13:56:45 +0000939 cleaned = true;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700940 cleaned_count++;
Bruce Allane5fe2542013-02-20 04:06:27 +0000941 dma_unmap_single(&pdev->dev, buffer_info->dma,
942 adapter->rx_buffer_len, DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700943 buffer_info->dma = 0;
944
Bruce Allan5f450212011-07-22 06:21:46 +0000945 length = le16_to_cpu(rx_desc->wb.upper.length);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700946
Bruce Allane921eb12012-11-28 09:28:37 +0000947 /* !EOP means multiple descriptors were used to store a single
Jesse Brandeburgb94b5022010-01-19 14:15:59 +0000948 * packet, if that's the case we need to toss it. In fact, we
949 * need to toss every packet with the EOP bit clear and the
950 * next frame that _does_ have the EOP bit set, as it is by
951 * definition only a frame fragment
952 */
Bruce Allan5f450212011-07-22 06:21:46 +0000953 if (unlikely(!(staterr & E1000_RXD_STAT_EOP)))
Jesse Brandeburgb94b5022010-01-19 14:15:59 +0000954 adapter->flags2 |= FLAG2_IS_DISCARDING;
955
956 if (adapter->flags2 & FLAG2_IS_DISCARDING) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700957 /* All receives must fit into a single buffer */
Bruce Allan3bb99fe2009-11-20 23:25:07 +0000958 e_dbg("Receive packet consumed multiple buffers\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -0700959 /* recycle */
960 buffer_info->skb = skb;
Bruce Allan5f450212011-07-22 06:21:46 +0000961 if (staterr & E1000_RXD_STAT_EOP)
Jesse Brandeburgb94b5022010-01-19 14:15:59 +0000962 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700963 goto next_desc;
964 }
965
Ben Greearcf955e62012-02-11 15:39:51 +0000966 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
967 !(netdev->features & NETIF_F_RXALL))) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700968 /* recycle */
969 buffer_info->skb = skb;
970 goto next_desc;
971 }
972
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +0000973 /* adjust length to remove Ethernet CRC */
Ben Greear01840392012-02-11 15:39:25 +0000974 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
975 /* If configured to store CRC, don't subtract FCS,
976 * but keep the FCS bytes out of the total_rx_bytes
977 * counter
978 */
979 if (netdev->features & NETIF_F_RXFCS)
980 total_rx_bytes -= 4;
981 else
982 length -= 4;
983 }
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +0000984
Auke Kokbc7f75f2007-09-17 12:30:59 -0700985 total_rx_bytes += length;
986 total_rx_packets++;
987
Bruce Allane921eb12012-11-28 09:28:37 +0000988 /* code added for copybreak, this should improve
Auke Kokbc7f75f2007-09-17 12:30:59 -0700989 * performance for small packets with large amounts
Bruce Allanad680762008-03-28 09:15:03 -0700990 * of reassembly being done in the stack
991 */
Auke Kokbc7f75f2007-09-17 12:30:59 -0700992 if (length < copybreak) {
993 struct sk_buff *new_skb =
Eric Dumazet89d71a62009-10-13 05:34:20 +0000994 netdev_alloc_skb_ip_align(netdev, length);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700995 if (new_skb) {
Bruce Allan808ff672008-08-08 18:35:56 -0700996 skb_copy_to_linear_data_offset(new_skb,
997 -NET_IP_ALIGN,
998 (skb->data -
999 NET_IP_ALIGN),
1000 (length +
1001 NET_IP_ALIGN));
Auke Kokbc7f75f2007-09-17 12:30:59 -07001002 /* save the skb in buffer_info as good */
1003 buffer_info->skb = skb;
1004 skb = new_skb;
1005 }
1006 /* else just continue with the old one */
1007 }
1008 /* end copybreak code */
1009 skb_put(skb, length);
1010
1011 /* Receive Checksum Offload */
Bruce Allan2e1706f2012-06-30 20:02:42 +00001012 e1000_rx_checksum(adapter, staterr, skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001013
Bruce Allan70495a52012-01-11 01:26:50 +00001014 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
1015
Bruce Allan5f450212011-07-22 06:21:46 +00001016 e1000_receive_skb(adapter, netdev, skb, staterr,
1017 rx_desc->wb.upper.vlan);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001018
1019next_desc:
Bruce Allan5f450212011-07-22 06:21:46 +00001020 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001021
1022 /* return some buffers to hardware, one at a time is too slow */
1023 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
Bruce Allan55aa6982011-12-16 00:45:45 +00001024 adapter->alloc_rx_buf(rx_ring, cleaned_count,
Jeff Kirsherc2fed992011-07-12 16:10:12 +00001025 GFP_ATOMIC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001026 cleaned_count = 0;
1027 }
1028
1029 /* use prefetched values */
1030 rx_desc = next_rxd;
1031 buffer_info = next_buffer;
Bruce Allan5f450212011-07-22 06:21:46 +00001032
1033 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001034 }
1035 rx_ring->next_to_clean = i;
1036
1037 cleaned_count = e1000_desc_unused(rx_ring);
1038 if (cleaned_count)
Bruce Allan55aa6982011-12-16 00:45:45 +00001039 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001040
Auke Kokbc7f75f2007-09-17 12:30:59 -07001041 adapter->total_rx_bytes += total_rx_bytes;
Bruce Allan7c257692008-04-23 11:09:00 -07001042 adapter->total_rx_packets += total_rx_packets;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001043 return cleaned;
1044}
1045
Bruce Allan55aa6982011-12-16 00:45:45 +00001046static void e1000_put_txbuf(struct e1000_ring *tx_ring,
1047 struct e1000_buffer *buffer_info)
Auke Kokbc7f75f2007-09-17 12:30:59 -07001048{
Bruce Allan55aa6982011-12-16 00:45:45 +00001049 struct e1000_adapter *adapter = tx_ring->adapter;
1050
Alexander Duyck03b13202009-12-02 16:45:31 +00001051 if (buffer_info->dma) {
1052 if (buffer_info->mapped_as_page)
Nick Nunley0be3f552010-04-27 13:09:05 +00001053 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma,
1054 buffer_info->length, DMA_TO_DEVICE);
Alexander Duyck03b13202009-12-02 16:45:31 +00001055 else
Nick Nunley0be3f552010-04-27 13:09:05 +00001056 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma,
1057 buffer_info->length, DMA_TO_DEVICE);
Alexander Duyck03b13202009-12-02 16:45:31 +00001058 buffer_info->dma = 0;
1059 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07001060 if (buffer_info->skb) {
1061 dev_kfree_skb_any(buffer_info->skb);
1062 buffer_info->skb = NULL;
1063 }
Alexander Duyck1b7719c2009-03-19 01:12:50 +00001064 buffer_info->time_stamp = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001065}
1066
Bruce Allan41cec6f2009-11-20 23:28:56 +00001067static void e1000_print_hw_hang(struct work_struct *work)
Auke Kokbc7f75f2007-09-17 12:30:59 -07001068{
Bruce Allan41cec6f2009-11-20 23:28:56 +00001069 struct e1000_adapter *adapter = container_of(work,
Bruce Allanf0ff4392013-02-20 04:05:39 +00001070 struct e1000_adapter,
1071 print_hang_task);
Jeff Kirsher09357b02011-11-18 14:25:00 +00001072 struct net_device *netdev = adapter->netdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001073 struct e1000_ring *tx_ring = adapter->tx_ring;
1074 unsigned int i = tx_ring->next_to_clean;
1075 unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
1076 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop);
Bruce Allan41cec6f2009-11-20 23:28:56 +00001077 struct e1000_hw *hw = &adapter->hw;
1078 u16 phy_status, phy_1000t_status, phy_ext_status;
1079 u16 pci_status;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001080
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00001081 if (test_bit(__E1000_DOWN, &adapter->state))
1082 return;
1083
Bruce Allane5fe2542013-02-20 04:06:27 +00001084 if (!adapter->tx_hang_recheck && (adapter->flags2 & FLAG2_DMA_BURST)) {
Bruce Allane921eb12012-11-28 09:28:37 +00001085 /* May be block on write-back, flush and detect again
Jeff Kirsher09357b02011-11-18 14:25:00 +00001086 * flush pending descriptor writebacks to memory
1087 */
1088 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
1089 /* execute the writes immediately */
1090 e1e_flush();
Bruce Allane921eb12012-11-28 09:28:37 +00001091 /* Due to rare timing issues, write to TIDV again to ensure
Matthew Vickbf030852012-03-16 09:03:00 +00001092 * the write is successful
1093 */
1094 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
1095 /* execute the writes immediately */
1096 e1e_flush();
Jeff Kirsher09357b02011-11-18 14:25:00 +00001097 adapter->tx_hang_recheck = true;
1098 return;
1099 }
1100 /* Real hang detected */
1101 adapter->tx_hang_recheck = false;
1102 netif_stop_queue(netdev);
1103
Bruce Allanc2ade1a2013-01-16 08:54:35 +00001104 e1e_rphy(hw, MII_BMSR, &phy_status);
1105 e1e_rphy(hw, MII_STAT1000, &phy_1000t_status);
1106 e1e_rphy(hw, MII_ESTATUS, &phy_ext_status);
Bruce Allan41cec6f2009-11-20 23:28:56 +00001107
1108 pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status);
1109
1110 /* detected Hardware unit hang */
1111 e_err("Detected Hardware Unit Hang:\n"
Jeff Kirsher44defeb2008-08-04 17:20:41 -07001112 " TDH <%x>\n"
1113 " TDT <%x>\n"
1114 " next_to_use <%x>\n"
1115 " next_to_clean <%x>\n"
1116 "buffer_info[next_to_clean]:\n"
1117 " time_stamp <%lx>\n"
1118 " next_to_watch <%x>\n"
1119 " jiffies <%lx>\n"
Bruce Allan41cec6f2009-11-20 23:28:56 +00001120 " next_to_watch.status <%x>\n"
1121 "MAC Status <%x>\n"
1122 "PHY Status <%x>\n"
1123 "PHY 1000BASE-T Status <%x>\n"
1124 "PHY Extended Status <%x>\n"
1125 "PCI Status <%x>\n",
Bruce Allane5fe2542013-02-20 04:06:27 +00001126 readl(tx_ring->head), readl(tx_ring->tail), tx_ring->next_to_use,
1127 tx_ring->next_to_clean, tx_ring->buffer_info[eop].time_stamp,
1128 eop, jiffies, eop_desc->upper.fields.status, er32(STATUS),
1129 phy_status, phy_1000t_status, phy_ext_status, pci_status);
Bruce Allan7c0427e2012-03-20 03:48:08 +00001130
1131 /* Suggest workaround for known h/w issue */
1132 if ((hw->mac.type == e1000_pchlan) && (er32(CTRL) & E1000_CTRL_TFCE))
1133 e_err("Try turning off Tx pause (flow control) via ethtool\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07001134}
1135
1136/**
Bruce Allanb67e1912012-12-27 08:32:33 +00001137 * e1000e_tx_hwtstamp_work - check for Tx time stamp
1138 * @work: pointer to work struct
1139 *
1140 * This work function polls the TSYNCTXCTL valid bit to determine when a
1141 * timestamp has been taken for the current stored skb. The timestamp must
1142 * be for this skb because only one such packet is allowed in the queue.
1143 */
1144static void e1000e_tx_hwtstamp_work(struct work_struct *work)
1145{
1146 struct e1000_adapter *adapter = container_of(work, struct e1000_adapter,
1147 tx_hwtstamp_work);
1148 struct e1000_hw *hw = &adapter->hw;
1149
1150 if (!adapter->tx_hwtstamp_skb)
1151 return;
1152
1153 if (er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_VALID) {
1154 struct skb_shared_hwtstamps shhwtstamps;
1155 u64 txstmp;
1156
1157 txstmp = er32(TXSTMPL);
1158 txstmp |= (u64)er32(TXSTMPH) << 32;
1159
1160 e1000e_systim_to_hwtstamp(adapter, &shhwtstamps, txstmp);
1161
1162 skb_tstamp_tx(adapter->tx_hwtstamp_skb, &shhwtstamps);
1163 dev_kfree_skb_any(adapter->tx_hwtstamp_skb);
1164 adapter->tx_hwtstamp_skb = NULL;
1165 } else {
1166 /* reschedule to check later */
1167 schedule_work(&adapter->tx_hwtstamp_work);
1168 }
1169}
1170
1171/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07001172 * e1000_clean_tx_irq - Reclaim resources after transmit completes
Bruce Allan55aa6982011-12-16 00:45:45 +00001173 * @tx_ring: Tx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07001174 *
1175 * the return value indicates whether actual cleaning was done, there
1176 * is no guarantee that everything was cleaned
1177 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00001178static bool e1000_clean_tx_irq(struct e1000_ring *tx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07001179{
Bruce Allan55aa6982011-12-16 00:45:45 +00001180 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001181 struct net_device *netdev = adapter->netdev;
1182 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001183 struct e1000_tx_desc *tx_desc, *eop_desc;
1184 struct e1000_buffer *buffer_info;
1185 unsigned int i, eop;
1186 unsigned int count = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001187 unsigned int total_tx_bytes = 0, total_tx_packets = 0;
Tom Herbert3f0cfa32011-11-28 16:33:16 +00001188 unsigned int bytes_compl = 0, pkts_compl = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001189
1190 i = tx_ring->next_to_clean;
1191 eop = tx_ring->buffer_info[i].next_to_watch;
1192 eop_desc = E1000_TX_DESC(*tx_ring, eop);
1193
Alexander Duyck12d04a32009-03-25 22:05:03 +00001194 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
1195 (count < tx_ring->count)) {
Jesse Brandeburga86043c2009-04-16 16:59:28 +00001196 bool cleaned = false;
Bruce Allane80bd1d2013-05-01 01:19:46 +00001197 rmb(); /* read buffer_info after eop_desc */
Jesse Brandeburga86043c2009-04-16 16:59:28 +00001198 for (; !cleaned; count++) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07001199 tx_desc = E1000_TX_DESC(*tx_ring, i);
1200 buffer_info = &tx_ring->buffer_info[i];
1201 cleaned = (i == eop);
1202
1203 if (cleaned) {
Tom Herbert9ed318d2010-05-05 14:02:27 +00001204 total_tx_packets += buffer_info->segs;
1205 total_tx_bytes += buffer_info->bytecount;
Tom Herbert3f0cfa32011-11-28 16:33:16 +00001206 if (buffer_info->skb) {
1207 bytes_compl += buffer_info->skb->len;
1208 pkts_compl++;
1209 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07001210 }
1211
Bruce Allan55aa6982011-12-16 00:45:45 +00001212 e1000_put_txbuf(tx_ring, buffer_info);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001213 tx_desc->upper.data = 0;
1214
1215 i++;
1216 if (i == tx_ring->count)
1217 i = 0;
1218 }
1219
Terry Loftindac87612010-04-09 10:29:49 +00001220 if (i == tx_ring->next_to_use)
1221 break;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001222 eop = tx_ring->buffer_info[i].next_to_watch;
1223 eop_desc = E1000_TX_DESC(*tx_ring, eop);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001224 }
1225
1226 tx_ring->next_to_clean = i;
1227
Tom Herbert3f0cfa32011-11-28 16:33:16 +00001228 netdev_completed_queue(netdev, pkts_compl, bytes_compl);
1229
Auke Kokbc7f75f2007-09-17 12:30:59 -07001230#define TX_WAKE_THRESHOLD 32
Jesse Brandeburga86043c2009-04-16 16:59:28 +00001231 if (count && netif_carrier_ok(netdev) &&
1232 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07001233 /* Make sure that anybody stopping the queue after this
1234 * sees the new next_to_clean.
1235 */
1236 smp_mb();
1237
1238 if (netif_queue_stopped(netdev) &&
1239 !(test_bit(__E1000_DOWN, &adapter->state))) {
1240 netif_wake_queue(netdev);
1241 ++adapter->restart_queue;
1242 }
1243 }
1244
1245 if (adapter->detect_tx_hung) {
Bruce Allane921eb12012-11-28 09:28:37 +00001246 /* Detect a transmit hang in hardware, this serializes the
Bruce Allan41cec6f2009-11-20 23:28:56 +00001247 * check with the clearing of time_stamp and movement of i
1248 */
Rusty Russell3db1cd52011-12-19 13:56:45 +00001249 adapter->detect_tx_hung = false;
Alexander Duyck12d04a32009-03-25 22:05:03 +00001250 if (tx_ring->buffer_info[i].time_stamp &&
1251 time_after(jiffies, tx_ring->buffer_info[i].time_stamp
Joe Perches8e95a202009-12-03 07:58:21 +00001252 + (adapter->tx_timeout_factor * HZ)) &&
Jeff Kirsher09357b02011-11-18 14:25:00 +00001253 !(er32(STATUS) & E1000_STATUS_TXOFF))
Bruce Allan41cec6f2009-11-20 23:28:56 +00001254 schedule_work(&adapter->print_hang_task);
Jeff Kirsher09357b02011-11-18 14:25:00 +00001255 else
1256 adapter->tx_hang_recheck = false;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001257 }
1258 adapter->total_tx_bytes += total_tx_bytes;
1259 adapter->total_tx_packets += total_tx_packets;
Eric Dumazet807540b2010-09-23 05:40:09 +00001260 return count < tx_ring->count;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001261}
1262
1263/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07001264 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
Bruce Allan55aa6982011-12-16 00:45:45 +00001265 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07001266 *
1267 * the return value indicates whether actual cleaning was done, there
1268 * is no guarantee that everything was cleaned
1269 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00001270static bool e1000_clean_rx_irq_ps(struct e1000_ring *rx_ring, int *work_done,
1271 int work_to_do)
Auke Kokbc7f75f2007-09-17 12:30:59 -07001272{
Bruce Allan55aa6982011-12-16 00:45:45 +00001273 struct e1000_adapter *adapter = rx_ring->adapter;
Bruce Allan3bb99fe2009-11-20 23:25:07 +00001274 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001275 union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
1276 struct net_device *netdev = adapter->netdev;
1277 struct pci_dev *pdev = adapter->pdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001278 struct e1000_buffer *buffer_info, *next_buffer;
1279 struct e1000_ps_page *ps_page;
1280 struct sk_buff *skb;
1281 unsigned int i, j;
1282 u32 length, staterr;
1283 int cleaned_count = 0;
Rusty Russell3db1cd52011-12-19 13:56:45 +00001284 bool cleaned = false;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001285 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
1286
1287 i = rx_ring->next_to_clean;
1288 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
1289 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1290 buffer_info = &rx_ring->buffer_info[i];
1291
1292 while (staterr & E1000_RXD_STAT_DD) {
1293 if (*work_done >= work_to_do)
1294 break;
1295 (*work_done)++;
1296 skb = buffer_info->skb;
Jeff Kirsher2d0bb1c2010-08-08 16:02:31 +00001297 rmb(); /* read descriptor and rx_buffer_info after status DD */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001298
1299 /* in the packet split case this is header only */
1300 prefetch(skb->data - NET_IP_ALIGN);
1301
1302 i++;
1303 if (i == rx_ring->count)
1304 i = 0;
1305 next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
1306 prefetch(next_rxd);
1307
1308 next_buffer = &rx_ring->buffer_info[i];
1309
Rusty Russell3db1cd52011-12-19 13:56:45 +00001310 cleaned = true;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001311 cleaned_count++;
Nick Nunley0be3f552010-04-27 13:09:05 +00001312 dma_unmap_single(&pdev->dev, buffer_info->dma,
Bruce Allanaf667a22010-12-31 06:10:01 +00001313 adapter->rx_ps_bsize0, DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001314 buffer_info->dma = 0;
1315
Bruce Allanaf667a22010-12-31 06:10:01 +00001316 /* see !EOP comment in other Rx routine */
Jesse Brandeburgb94b5022010-01-19 14:15:59 +00001317 if (!(staterr & E1000_RXD_STAT_EOP))
1318 adapter->flags2 |= FLAG2_IS_DISCARDING;
1319
1320 if (adapter->flags2 & FLAG2_IS_DISCARDING) {
Jeff Kirsheref456f82011-11-03 11:40:28 +00001321 e_dbg("Packet Split buffers didn't pick up the full packet\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07001322 dev_kfree_skb_irq(skb);
Jesse Brandeburgb94b5022010-01-19 14:15:59 +00001323 if (staterr & E1000_RXD_STAT_EOP)
1324 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001325 goto next_desc;
1326 }
1327
Ben Greearcf955e62012-02-11 15:39:51 +00001328 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
1329 !(netdev->features & NETIF_F_RXALL))) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07001330 dev_kfree_skb_irq(skb);
1331 goto next_desc;
1332 }
1333
1334 length = le16_to_cpu(rx_desc->wb.middle.length0);
1335
1336 if (!length) {
Jeff Kirsheref456f82011-11-03 11:40:28 +00001337 e_dbg("Last part of the packet spanning multiple descriptors\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07001338 dev_kfree_skb_irq(skb);
1339 goto next_desc;
1340 }
1341
1342 /* Good Receive */
1343 skb_put(skb, length);
1344
1345 {
Bruce Allane921eb12012-11-28 09:28:37 +00001346 /* this looks ugly, but it seems compiler issues make
Bruce Allan0e15df42012-01-31 06:37:11 +00001347 * it more efficient than reusing j
1348 */
1349 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001350
Bruce Allane921eb12012-11-28 09:28:37 +00001351 /* page alloc/put takes too long and effects small
Bruce Allan0e15df42012-01-31 06:37:11 +00001352 * packet throughput, so unsplit small packets and
1353 * save the alloc/put only valid in softirq (napi)
1354 * context to call kmap_*
Bruce Allanad680762008-03-28 09:15:03 -07001355 */
Bruce Allan0e15df42012-01-31 06:37:11 +00001356 if (l1 && (l1 <= copybreak) &&
1357 ((length + l1) <= adapter->rx_ps_bsize0)) {
1358 u8 *vaddr;
Auke Kok140a7482007-10-25 13:57:58 -07001359
Bruce Allan0e15df42012-01-31 06:37:11 +00001360 ps_page = &buffer_info->ps_pages[0];
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +00001361
Bruce Allane921eb12012-11-28 09:28:37 +00001362 /* there is no documentation about how to call
Bruce Allan0e15df42012-01-31 06:37:11 +00001363 * kmap_atomic, so we can't hold the mapping
1364 * very long
1365 */
1366 dma_sync_single_for_cpu(&pdev->dev,
1367 ps_page->dma,
1368 PAGE_SIZE,
1369 DMA_FROM_DEVICE);
Linus Torvalds9f393832012-03-21 09:40:26 -07001370 vaddr = kmap_atomic(ps_page->page);
Bruce Allan0e15df42012-01-31 06:37:11 +00001371 memcpy(skb_tail_pointer(skb), vaddr, l1);
Linus Torvalds9f393832012-03-21 09:40:26 -07001372 kunmap_atomic(vaddr);
Bruce Allan0e15df42012-01-31 06:37:11 +00001373 dma_sync_single_for_device(&pdev->dev,
1374 ps_page->dma,
1375 PAGE_SIZE,
1376 DMA_FROM_DEVICE);
1377
1378 /* remove the CRC */
Ben Greear01840392012-02-11 15:39:25 +00001379 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
1380 if (!(netdev->features & NETIF_F_RXFCS))
1381 l1 -= 4;
1382 }
Bruce Allan0e15df42012-01-31 06:37:11 +00001383
1384 skb_put(skb, l1);
1385 goto copydone;
Bruce Allane80bd1d2013-05-01 01:19:46 +00001386 } /* if */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001387 }
1388
1389 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
1390 length = le16_to_cpu(rx_desc->wb.upper.length[j]);
1391 if (!length)
1392 break;
1393
Auke Kok47f44e42007-10-25 13:57:44 -07001394 ps_page = &buffer_info->ps_pages[j];
Nick Nunley0be3f552010-04-27 13:09:05 +00001395 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
1396 DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001397 ps_page->dma = 0;
1398 skb_fill_page_desc(skb, j, ps_page->page, 0, length);
1399 ps_page->page = NULL;
1400 skb->len += length;
1401 skb->data_len += length;
Eric Dumazet98a045d2011-10-13 08:03:36 +00001402 skb->truesize += PAGE_SIZE;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001403 }
1404
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +00001405 /* strip the ethernet crc, problem is we're using pages now so
1406 * this whole operation can get a little cpu intensive
1407 */
Ben Greear01840392012-02-11 15:39:25 +00001408 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
1409 if (!(netdev->features & NETIF_F_RXFCS))
1410 pskb_trim(skb, skb->len - 4);
1411 }
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +00001412
Auke Kokbc7f75f2007-09-17 12:30:59 -07001413copydone:
1414 total_rx_bytes += skb->len;
1415 total_rx_packets++;
1416
Bruce Allan2e1706f2012-06-30 20:02:42 +00001417 e1000_rx_checksum(adapter, staterr, skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001418
Bruce Allan70495a52012-01-11 01:26:50 +00001419 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
1420
Auke Kokbc7f75f2007-09-17 12:30:59 -07001421 if (rx_desc->wb.upper.header_status &
Bruce Allan17e813e2013-02-20 04:06:01 +00001422 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))
Auke Kokbc7f75f2007-09-17 12:30:59 -07001423 adapter->rx_hdr_split++;
1424
Bruce Allanb67e1912012-12-27 08:32:33 +00001425 e1000_receive_skb(adapter, netdev, skb, staterr,
1426 rx_desc->wb.middle.vlan);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001427
1428next_desc:
1429 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
1430 buffer_info->skb = NULL;
1431
1432 /* return some buffers to hardware, one at a time is too slow */
1433 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
Bruce Allan55aa6982011-12-16 00:45:45 +00001434 adapter->alloc_rx_buf(rx_ring, cleaned_count,
Jeff Kirsherc2fed992011-07-12 16:10:12 +00001435 GFP_ATOMIC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001436 cleaned_count = 0;
1437 }
1438
1439 /* use prefetched values */
1440 rx_desc = next_rxd;
1441 buffer_info = next_buffer;
1442
1443 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1444 }
1445 rx_ring->next_to_clean = i;
1446
1447 cleaned_count = e1000_desc_unused(rx_ring);
1448 if (cleaned_count)
Bruce Allan55aa6982011-12-16 00:45:45 +00001449 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001450
Auke Kokbc7f75f2007-09-17 12:30:59 -07001451 adapter->total_rx_bytes += total_rx_bytes;
Bruce Allan7c257692008-04-23 11:09:00 -07001452 adapter->total_rx_packets += total_rx_packets;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001453 return cleaned;
1454}
1455
1456/**
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001457 * e1000_consume_page - helper function
1458 **/
1459static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
Bruce Allan66501f52013-02-20 04:05:55 +00001460 u16 length)
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001461{
1462 bi->page = NULL;
1463 skb->len += length;
1464 skb->data_len += length;
Eric Dumazet98a045d2011-10-13 08:03:36 +00001465 skb->truesize += PAGE_SIZE;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001466}
1467
1468/**
1469 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1470 * @adapter: board private structure
1471 *
1472 * the return value indicates whether actual cleaning was done, there
1473 * is no guarantee that everything was cleaned
1474 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00001475static bool e1000_clean_jumbo_rx_irq(struct e1000_ring *rx_ring, int *work_done,
1476 int work_to_do)
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001477{
Bruce Allan55aa6982011-12-16 00:45:45 +00001478 struct e1000_adapter *adapter = rx_ring->adapter;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001479 struct net_device *netdev = adapter->netdev;
1480 struct pci_dev *pdev = adapter->pdev;
Bruce Allan5f450212011-07-22 06:21:46 +00001481 union e1000_rx_desc_extended *rx_desc, *next_rxd;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001482 struct e1000_buffer *buffer_info, *next_buffer;
Bruce Allan5f450212011-07-22 06:21:46 +00001483 u32 length, staterr;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001484 unsigned int i;
1485 int cleaned_count = 0;
1486 bool cleaned = false;
Bruce Allan362e20c2013-02-20 04:05:45 +00001487 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
Bruce Allan17e813e2013-02-20 04:06:01 +00001488 struct skb_shared_info *shinfo;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001489
1490 i = rx_ring->next_to_clean;
Bruce Allan5f450212011-07-22 06:21:46 +00001491 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
1492 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001493 buffer_info = &rx_ring->buffer_info[i];
1494
Bruce Allan5f450212011-07-22 06:21:46 +00001495 while (staterr & E1000_RXD_STAT_DD) {
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001496 struct sk_buff *skb;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001497
1498 if (*work_done >= work_to_do)
1499 break;
1500 (*work_done)++;
Jeff Kirsher2d0bb1c2010-08-08 16:02:31 +00001501 rmb(); /* read descriptor and rx_buffer_info after status DD */
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001502
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001503 skb = buffer_info->skb;
1504 buffer_info->skb = NULL;
1505
1506 ++i;
1507 if (i == rx_ring->count)
1508 i = 0;
Bruce Allan5f450212011-07-22 06:21:46 +00001509 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001510 prefetch(next_rxd);
1511
1512 next_buffer = &rx_ring->buffer_info[i];
1513
1514 cleaned = true;
1515 cleaned_count++;
Nick Nunley0be3f552010-04-27 13:09:05 +00001516 dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE,
1517 DMA_FROM_DEVICE);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001518 buffer_info->dma = 0;
1519
Bruce Allan5f450212011-07-22 06:21:46 +00001520 length = le16_to_cpu(rx_desc->wb.upper.length);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001521
1522 /* errors is only valid for DD + EOP descriptors */
Bruce Allan5f450212011-07-22 06:21:46 +00001523 if (unlikely((staterr & E1000_RXD_STAT_EOP) &&
Ben Greearcf955e62012-02-11 15:39:51 +00001524 ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
1525 !(netdev->features & NETIF_F_RXALL)))) {
Bruce Allan5f450212011-07-22 06:21:46 +00001526 /* recycle both page and skb */
1527 buffer_info->skb = skb;
1528 /* an error means any chain goes out the window too */
1529 if (rx_ring->rx_skb_top)
1530 dev_kfree_skb_irq(rx_ring->rx_skb_top);
1531 rx_ring->rx_skb_top = NULL;
1532 goto next_desc;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001533 }
Bruce Allanf0f1a172010-12-11 05:53:32 +00001534#define rxtop (rx_ring->rx_skb_top)
Bruce Allan5f450212011-07-22 06:21:46 +00001535 if (!(staterr & E1000_RXD_STAT_EOP)) {
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001536 /* this descriptor is only the beginning (or middle) */
1537 if (!rxtop) {
1538 /* this is the beginning of a chain */
1539 rxtop = skb;
1540 skb_fill_page_desc(rxtop, 0, buffer_info->page,
Bruce Allanf0ff4392013-02-20 04:05:39 +00001541 0, length);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001542 } else {
1543 /* this is the middle of a chain */
Bruce Allan17e813e2013-02-20 04:06:01 +00001544 shinfo = skb_shinfo(rxtop);
1545 skb_fill_page_desc(rxtop, shinfo->nr_frags,
1546 buffer_info->page, 0,
1547 length);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001548 /* re-use the skb, only consumed the page */
1549 buffer_info->skb = skb;
1550 }
1551 e1000_consume_page(buffer_info, rxtop, length);
1552 goto next_desc;
1553 } else {
1554 if (rxtop) {
1555 /* end of the chain */
Bruce Allan17e813e2013-02-20 04:06:01 +00001556 shinfo = skb_shinfo(rxtop);
1557 skb_fill_page_desc(rxtop, shinfo->nr_frags,
1558 buffer_info->page, 0,
1559 length);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001560 /* re-use the current skb, we only consumed the
Bruce Allane921eb12012-11-28 09:28:37 +00001561 * page
1562 */
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001563 buffer_info->skb = skb;
1564 skb = rxtop;
1565 rxtop = NULL;
1566 e1000_consume_page(buffer_info, skb, length);
1567 } else {
1568 /* no chain, got EOP, this buf is the packet
Bruce Allane921eb12012-11-28 09:28:37 +00001569 * copybreak to save the put_page/alloc_page
1570 */
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001571 if (length <= copybreak &&
1572 skb_tailroom(skb) >= length) {
1573 u8 *vaddr;
Cong Wang46790262011-11-25 23:14:23 +08001574 vaddr = kmap_atomic(buffer_info->page);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001575 memcpy(skb_tail_pointer(skb), vaddr,
1576 length);
Cong Wang46790262011-11-25 23:14:23 +08001577 kunmap_atomic(vaddr);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001578 /* re-use the page, so don't erase
Bruce Allane921eb12012-11-28 09:28:37 +00001579 * buffer_info->page
1580 */
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001581 skb_put(skb, length);
1582 } else {
1583 skb_fill_page_desc(skb, 0,
Bruce Allanf0ff4392013-02-20 04:05:39 +00001584 buffer_info->page, 0,
1585 length);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001586 e1000_consume_page(buffer_info, skb,
Bruce Allanf0ff4392013-02-20 04:05:39 +00001587 length);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001588 }
1589 }
1590 }
1591
Bruce Allan2e1706f2012-06-30 20:02:42 +00001592 /* Receive Checksum Offload */
1593 e1000_rx_checksum(adapter, staterr, skb);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001594
Bruce Allan70495a52012-01-11 01:26:50 +00001595 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
1596
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001597 /* probably a little skewed due to removing CRC */
1598 total_rx_bytes += skb->len;
1599 total_rx_packets++;
1600
1601 /* eth type trans needs skb->data to point to something */
1602 if (!pskb_may_pull(skb, ETH_HLEN)) {
Jeff Kirsher44defeb2008-08-04 17:20:41 -07001603 e_err("pskb_may_pull failed.\n");
Bruce Allanef5ab892011-02-10 08:17:21 +00001604 dev_kfree_skb_irq(skb);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001605 goto next_desc;
1606 }
1607
Bruce Allan5f450212011-07-22 06:21:46 +00001608 e1000_receive_skb(adapter, netdev, skb, staterr,
1609 rx_desc->wb.upper.vlan);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001610
1611next_desc:
Bruce Allan5f450212011-07-22 06:21:46 +00001612 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001613
1614 /* return some buffers to hardware, one at a time is too slow */
1615 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
Bruce Allan55aa6982011-12-16 00:45:45 +00001616 adapter->alloc_rx_buf(rx_ring, cleaned_count,
Jeff Kirsherc2fed992011-07-12 16:10:12 +00001617 GFP_ATOMIC);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001618 cleaned_count = 0;
1619 }
1620
1621 /* use prefetched values */
1622 rx_desc = next_rxd;
1623 buffer_info = next_buffer;
Bruce Allan5f450212011-07-22 06:21:46 +00001624
1625 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001626 }
1627 rx_ring->next_to_clean = i;
1628
1629 cleaned_count = e1000_desc_unused(rx_ring);
1630 if (cleaned_count)
Bruce Allan55aa6982011-12-16 00:45:45 +00001631 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001632
1633 adapter->total_rx_bytes += total_rx_bytes;
1634 adapter->total_rx_packets += total_rx_packets;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001635 return cleaned;
1636}
1637
1638/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07001639 * e1000_clean_rx_ring - Free Rx Buffers per Queue
Bruce Allan55aa6982011-12-16 00:45:45 +00001640 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07001641 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00001642static void e1000_clean_rx_ring(struct e1000_ring *rx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07001643{
Bruce Allan55aa6982011-12-16 00:45:45 +00001644 struct e1000_adapter *adapter = rx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001645 struct e1000_buffer *buffer_info;
1646 struct e1000_ps_page *ps_page;
1647 struct pci_dev *pdev = adapter->pdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001648 unsigned int i, j;
1649
1650 /* Free all the Rx ring sk_buffs */
1651 for (i = 0; i < rx_ring->count; i++) {
1652 buffer_info = &rx_ring->buffer_info[i];
1653 if (buffer_info->dma) {
1654 if (adapter->clean_rx == e1000_clean_rx_irq)
Nick Nunley0be3f552010-04-27 13:09:05 +00001655 dma_unmap_single(&pdev->dev, buffer_info->dma,
Auke Kokbc7f75f2007-09-17 12:30:59 -07001656 adapter->rx_buffer_len,
Nick Nunley0be3f552010-04-27 13:09:05 +00001657 DMA_FROM_DEVICE);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001658 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq)
Nick Nunley0be3f552010-04-27 13:09:05 +00001659 dma_unmap_page(&pdev->dev, buffer_info->dma,
Bruce Allanf0ff4392013-02-20 04:05:39 +00001660 PAGE_SIZE, DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001661 else if (adapter->clean_rx == e1000_clean_rx_irq_ps)
Nick Nunley0be3f552010-04-27 13:09:05 +00001662 dma_unmap_single(&pdev->dev, buffer_info->dma,
Auke Kokbc7f75f2007-09-17 12:30:59 -07001663 adapter->rx_ps_bsize0,
Nick Nunley0be3f552010-04-27 13:09:05 +00001664 DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001665 buffer_info->dma = 0;
1666 }
1667
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001668 if (buffer_info->page) {
1669 put_page(buffer_info->page);
1670 buffer_info->page = NULL;
1671 }
1672
Auke Kokbc7f75f2007-09-17 12:30:59 -07001673 if (buffer_info->skb) {
1674 dev_kfree_skb(buffer_info->skb);
1675 buffer_info->skb = NULL;
1676 }
1677
1678 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
Auke Kok47f44e42007-10-25 13:57:44 -07001679 ps_page = &buffer_info->ps_pages[j];
Auke Kokbc7f75f2007-09-17 12:30:59 -07001680 if (!ps_page->page)
1681 break;
Nick Nunley0be3f552010-04-27 13:09:05 +00001682 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
1683 DMA_FROM_DEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001684 ps_page->dma = 0;
1685 put_page(ps_page->page);
1686 ps_page->page = NULL;
1687 }
1688 }
1689
1690 /* there also may be some cached data from a chained receive */
1691 if (rx_ring->rx_skb_top) {
1692 dev_kfree_skb(rx_ring->rx_skb_top);
1693 rx_ring->rx_skb_top = NULL;
1694 }
1695
Auke Kokbc7f75f2007-09-17 12:30:59 -07001696 /* Zero out the descriptor ring */
1697 memset(rx_ring->desc, 0, rx_ring->size);
1698
1699 rx_ring->next_to_clean = 0;
1700 rx_ring->next_to_use = 0;
Jesse Brandeburgb94b5022010-01-19 14:15:59 +00001701 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001702
Bruce Allanc5083cf2011-12-16 00:45:40 +00001703 writel(0, rx_ring->head);
Bruce Allanbdc125f2012-03-20 03:47:52 +00001704 if (rx_ring->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
1705 e1000e_update_rdt_wa(rx_ring, 0);
1706 else
1707 writel(0, rx_ring->tail);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001708}
1709
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07001710static void e1000e_downshift_workaround(struct work_struct *work)
1711{
1712 struct e1000_adapter *adapter = container_of(work,
Bruce Allan17e813e2013-02-20 04:06:01 +00001713 struct e1000_adapter,
1714 downshift_task);
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07001715
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00001716 if (test_bit(__E1000_DOWN, &adapter->state))
1717 return;
1718
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07001719 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw);
1720}
1721
Auke Kokbc7f75f2007-09-17 12:30:59 -07001722/**
1723 * e1000_intr_msi - Interrupt Handler
1724 * @irq: interrupt number
1725 * @data: pointer to a network interface device structure
1726 **/
Bruce Allan8bb62862013-01-16 08:46:49 +00001727static irqreturn_t e1000_intr_msi(int __always_unused irq, void *data)
Auke Kokbc7f75f2007-09-17 12:30:59 -07001728{
1729 struct net_device *netdev = data;
1730 struct e1000_adapter *adapter = netdev_priv(netdev);
1731 struct e1000_hw *hw = &adapter->hw;
1732 u32 icr = er32(ICR);
1733
Bruce Allane921eb12012-11-28 09:28:37 +00001734 /* read ICR disables interrupts using IAM */
dave graham573cca82009-02-10 12:52:05 +00001735 if (icr & E1000_ICR_LSC) {
Bruce Allanf92518d2012-02-01 11:16:42 +00001736 hw->mac.get_link_status = true;
Bruce Allane921eb12012-11-28 09:28:37 +00001737 /* ICH8 workaround-- Call gig speed drop workaround on cable
Bruce Allanad680762008-03-28 09:15:03 -07001738 * disconnect (LSC) before accessing any PHY registers
1739 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001740 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1741 (!(er32(STATUS) & E1000_STATUS_LU)))
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07001742 schedule_work(&adapter->downshift_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001743
Bruce Allane921eb12012-11-28 09:28:37 +00001744 /* 80003ES2LAN workaround-- For packet buffer work-around on
Auke Kokbc7f75f2007-09-17 12:30:59 -07001745 * link down event; disable receives here in the ISR and reset
Bruce Allanad680762008-03-28 09:15:03 -07001746 * adapter in watchdog
1747 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001748 if (netif_carrier_ok(netdev) &&
1749 adapter->flags & FLAG_RX_NEEDS_RESTART) {
1750 /* disable receives */
1751 u32 rctl = er32(RCTL);
1752 ew32(RCTL, rctl & ~E1000_RCTL_EN);
Bruce Allan12d43f72012-12-05 06:26:14 +00001753 adapter->flags |= FLAG_RESTART_NOW;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001754 }
1755 /* guard against interrupt when we're going down */
1756 if (!test_bit(__E1000_DOWN, &adapter->state))
1757 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1758 }
1759
Bruce Allan94fb8482013-01-23 09:00:03 +00001760 /* Reset on uncorrectable ECC error */
1761 if ((icr & E1000_ICR_ECCER) && (hw->mac.type == e1000_pch_lpt)) {
1762 u32 pbeccsts = er32(PBECCSTS);
1763
1764 adapter->corr_errors +=
1765 pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK;
1766 adapter->uncorr_errors +=
1767 (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >>
1768 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT;
1769
1770 /* Do the reset outside of interrupt context */
1771 schedule_work(&adapter->reset_task);
1772
1773 /* return immediately since reset is imminent */
1774 return IRQ_HANDLED;
1775 }
1776
Ben Hutchings288379f2009-01-19 16:43:59 -08001777 if (napi_schedule_prep(&adapter->napi)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07001778 adapter->total_tx_bytes = 0;
1779 adapter->total_tx_packets = 0;
1780 adapter->total_rx_bytes = 0;
1781 adapter->total_rx_packets = 0;
Ben Hutchings288379f2009-01-19 16:43:59 -08001782 __napi_schedule(&adapter->napi);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001783 }
1784
1785 return IRQ_HANDLED;
1786}
1787
1788/**
1789 * e1000_intr - Interrupt Handler
1790 * @irq: interrupt number
1791 * @data: pointer to a network interface device structure
1792 **/
Bruce Allan8bb62862013-01-16 08:46:49 +00001793static irqreturn_t e1000_intr(int __always_unused irq, void *data)
Auke Kokbc7f75f2007-09-17 12:30:59 -07001794{
1795 struct net_device *netdev = data;
1796 struct e1000_adapter *adapter = netdev_priv(netdev);
1797 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001798 u32 rctl, icr = er32(ICR);
Bruce Allan4662e822008-08-26 18:37:06 -07001799
Bruce Allana68ea772009-11-20 23:23:16 +00001800 if (!icr || test_bit(__E1000_DOWN, &adapter->state))
Bruce Allane80bd1d2013-05-01 01:19:46 +00001801 return IRQ_NONE; /* Not our interrupt */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001802
Bruce Allane921eb12012-11-28 09:28:37 +00001803 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
Bruce Allanad680762008-03-28 09:15:03 -07001804 * not set, then the adapter didn't send an interrupt
1805 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001806 if (!(icr & E1000_ICR_INT_ASSERTED))
1807 return IRQ_NONE;
1808
Bruce Allane921eb12012-11-28 09:28:37 +00001809 /* Interrupt Auto-Mask...upon reading ICR,
Bruce Allanad680762008-03-28 09:15:03 -07001810 * interrupts are masked. No need for the
1811 * IMC write
1812 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001813
dave graham573cca82009-02-10 12:52:05 +00001814 if (icr & E1000_ICR_LSC) {
Bruce Allanf92518d2012-02-01 11:16:42 +00001815 hw->mac.get_link_status = true;
Bruce Allane921eb12012-11-28 09:28:37 +00001816 /* ICH8 workaround-- Call gig speed drop workaround on cable
Bruce Allanad680762008-03-28 09:15:03 -07001817 * disconnect (LSC) before accessing any PHY registers
1818 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001819 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1820 (!(er32(STATUS) & E1000_STATUS_LU)))
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07001821 schedule_work(&adapter->downshift_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001822
Bruce Allane921eb12012-11-28 09:28:37 +00001823 /* 80003ES2LAN workaround--
Auke Kokbc7f75f2007-09-17 12:30:59 -07001824 * For packet buffer work-around on link down event;
1825 * disable receives here in the ISR and
1826 * reset adapter in watchdog
1827 */
1828 if (netif_carrier_ok(netdev) &&
1829 (adapter->flags & FLAG_RX_NEEDS_RESTART)) {
1830 /* disable receives */
1831 rctl = er32(RCTL);
1832 ew32(RCTL, rctl & ~E1000_RCTL_EN);
Bruce Allan12d43f72012-12-05 06:26:14 +00001833 adapter->flags |= FLAG_RESTART_NOW;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001834 }
1835 /* guard against interrupt when we're going down */
1836 if (!test_bit(__E1000_DOWN, &adapter->state))
1837 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1838 }
1839
Bruce Allan94fb8482013-01-23 09:00:03 +00001840 /* Reset on uncorrectable ECC error */
1841 if ((icr & E1000_ICR_ECCER) && (hw->mac.type == e1000_pch_lpt)) {
1842 u32 pbeccsts = er32(PBECCSTS);
1843
1844 adapter->corr_errors +=
1845 pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK;
1846 adapter->uncorr_errors +=
1847 (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >>
1848 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT;
1849
1850 /* Do the reset outside of interrupt context */
1851 schedule_work(&adapter->reset_task);
1852
1853 /* return immediately since reset is imminent */
1854 return IRQ_HANDLED;
1855 }
1856
Ben Hutchings288379f2009-01-19 16:43:59 -08001857 if (napi_schedule_prep(&adapter->napi)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07001858 adapter->total_tx_bytes = 0;
1859 adapter->total_tx_packets = 0;
1860 adapter->total_rx_bytes = 0;
1861 adapter->total_rx_packets = 0;
Ben Hutchings288379f2009-01-19 16:43:59 -08001862 __napi_schedule(&adapter->napi);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001863 }
1864
1865 return IRQ_HANDLED;
1866}
1867
Bruce Allan8bb62862013-01-16 08:46:49 +00001868static irqreturn_t e1000_msix_other(int __always_unused irq, void *data)
Bruce Allan4662e822008-08-26 18:37:06 -07001869{
1870 struct net_device *netdev = data;
1871 struct e1000_adapter *adapter = netdev_priv(netdev);
1872 struct e1000_hw *hw = &adapter->hw;
1873 u32 icr = er32(ICR);
1874
1875 if (!(icr & E1000_ICR_INT_ASSERTED)) {
Jesse Brandeburga3c69fe2009-03-25 22:05:41 +00001876 if (!test_bit(__E1000_DOWN, &adapter->state))
1877 ew32(IMS, E1000_IMS_OTHER);
Bruce Allan4662e822008-08-26 18:37:06 -07001878 return IRQ_NONE;
1879 }
1880
1881 if (icr & adapter->eiac_mask)
1882 ew32(ICS, (icr & adapter->eiac_mask));
1883
1884 if (icr & E1000_ICR_OTHER) {
1885 if (!(icr & E1000_ICR_LSC))
1886 goto no_link_interrupt;
Bruce Allanf92518d2012-02-01 11:16:42 +00001887 hw->mac.get_link_status = true;
Bruce Allan4662e822008-08-26 18:37:06 -07001888 /* guard against interrupt when we're going down */
1889 if (!test_bit(__E1000_DOWN, &adapter->state))
1890 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1891 }
1892
1893no_link_interrupt:
Jesse Brandeburga3c69fe2009-03-25 22:05:41 +00001894 if (!test_bit(__E1000_DOWN, &adapter->state))
1895 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER);
Bruce Allan4662e822008-08-26 18:37:06 -07001896
1897 return IRQ_HANDLED;
1898}
1899
Bruce Allan8bb62862013-01-16 08:46:49 +00001900static irqreturn_t e1000_intr_msix_tx(int __always_unused irq, void *data)
Bruce Allan4662e822008-08-26 18:37:06 -07001901{
1902 struct net_device *netdev = data;
1903 struct e1000_adapter *adapter = netdev_priv(netdev);
1904 struct e1000_hw *hw = &adapter->hw;
1905 struct e1000_ring *tx_ring = adapter->tx_ring;
1906
Bruce Allan4662e822008-08-26 18:37:06 -07001907 adapter->total_tx_bytes = 0;
1908 adapter->total_tx_packets = 0;
1909
Bruce Allan55aa6982011-12-16 00:45:45 +00001910 if (!e1000_clean_tx_irq(tx_ring))
Bruce Allan4662e822008-08-26 18:37:06 -07001911 /* Ring was not completely cleaned, so fire another interrupt */
1912 ew32(ICS, tx_ring->ims_val);
1913
1914 return IRQ_HANDLED;
1915}
1916
Bruce Allan8bb62862013-01-16 08:46:49 +00001917static irqreturn_t e1000_intr_msix_rx(int __always_unused irq, void *data)
Bruce Allan4662e822008-08-26 18:37:06 -07001918{
1919 struct net_device *netdev = data;
1920 struct e1000_adapter *adapter = netdev_priv(netdev);
Bruce Allan55aa6982011-12-16 00:45:45 +00001921 struct e1000_ring *rx_ring = adapter->rx_ring;
Bruce Allan4662e822008-08-26 18:37:06 -07001922
1923 /* Write the ITR value calculated at the end of the
1924 * previous interrupt.
1925 */
Bruce Allan55aa6982011-12-16 00:45:45 +00001926 if (rx_ring->set_itr) {
1927 writel(1000000000 / (rx_ring->itr_val * 256),
1928 rx_ring->itr_register);
1929 rx_ring->set_itr = 0;
Bruce Allan4662e822008-08-26 18:37:06 -07001930 }
1931
Ben Hutchings288379f2009-01-19 16:43:59 -08001932 if (napi_schedule_prep(&adapter->napi)) {
Bruce Allan4662e822008-08-26 18:37:06 -07001933 adapter->total_rx_bytes = 0;
1934 adapter->total_rx_packets = 0;
Ben Hutchings288379f2009-01-19 16:43:59 -08001935 __napi_schedule(&adapter->napi);
Bruce Allan4662e822008-08-26 18:37:06 -07001936 }
1937 return IRQ_HANDLED;
1938}
1939
1940/**
1941 * e1000_configure_msix - Configure MSI-X hardware
1942 *
1943 * e1000_configure_msix sets up the hardware to properly
1944 * generate MSI-X interrupts.
1945 **/
1946static void e1000_configure_msix(struct e1000_adapter *adapter)
1947{
1948 struct e1000_hw *hw = &adapter->hw;
1949 struct e1000_ring *rx_ring = adapter->rx_ring;
1950 struct e1000_ring *tx_ring = adapter->tx_ring;
1951 int vector = 0;
1952 u32 ctrl_ext, ivar = 0;
1953
1954 adapter->eiac_mask = 0;
1955
1956 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1957 if (hw->mac.type == e1000_82574) {
1958 u32 rfctl = er32(RFCTL);
1959 rfctl |= E1000_RFCTL_ACK_DIS;
1960 ew32(RFCTL, rfctl);
1961 }
1962
Bruce Allan4662e822008-08-26 18:37:06 -07001963 /* Configure Rx vector */
1964 rx_ring->ims_val = E1000_IMS_RXQ0;
1965 adapter->eiac_mask |= rx_ring->ims_val;
1966 if (rx_ring->itr_val)
1967 writel(1000000000 / (rx_ring->itr_val * 256),
Bruce Allanc5083cf2011-12-16 00:45:40 +00001968 rx_ring->itr_register);
Bruce Allan4662e822008-08-26 18:37:06 -07001969 else
Bruce Allanc5083cf2011-12-16 00:45:40 +00001970 writel(1, rx_ring->itr_register);
Bruce Allan4662e822008-08-26 18:37:06 -07001971 ivar = E1000_IVAR_INT_ALLOC_VALID | vector;
1972
1973 /* Configure Tx vector */
1974 tx_ring->ims_val = E1000_IMS_TXQ0;
1975 vector++;
1976 if (tx_ring->itr_val)
1977 writel(1000000000 / (tx_ring->itr_val * 256),
Bruce Allanc5083cf2011-12-16 00:45:40 +00001978 tx_ring->itr_register);
Bruce Allan4662e822008-08-26 18:37:06 -07001979 else
Bruce Allanc5083cf2011-12-16 00:45:40 +00001980 writel(1, tx_ring->itr_register);
Bruce Allan4662e822008-08-26 18:37:06 -07001981 adapter->eiac_mask |= tx_ring->ims_val;
1982 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8);
1983
1984 /* set vector for Other Causes, e.g. link changes */
1985 vector++;
1986 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16);
1987 if (rx_ring->itr_val)
1988 writel(1000000000 / (rx_ring->itr_val * 256),
1989 hw->hw_addr + E1000_EITR_82574(vector));
1990 else
1991 writel(1, hw->hw_addr + E1000_EITR_82574(vector));
1992
1993 /* Cause Tx interrupts on every write back */
1994 ivar |= (1 << 31);
1995
1996 ew32(IVAR, ivar);
1997
1998 /* enable MSI-X PBA support */
1999 ctrl_ext = er32(CTRL_EXT);
2000 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR;
2001
2002 /* Auto-Mask Other interrupts upon ICR read */
Bruce Allan4662e822008-08-26 18:37:06 -07002003 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER);
2004 ctrl_ext |= E1000_CTRL_EXT_EIAME;
2005 ew32(CTRL_EXT, ctrl_ext);
2006 e1e_flush();
2007}
2008
2009void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter)
2010{
2011 if (adapter->msix_entries) {
2012 pci_disable_msix(adapter->pdev);
2013 kfree(adapter->msix_entries);
2014 adapter->msix_entries = NULL;
2015 } else if (adapter->flags & FLAG_MSI_ENABLED) {
2016 pci_disable_msi(adapter->pdev);
2017 adapter->flags &= ~FLAG_MSI_ENABLED;
2018 }
Bruce Allan4662e822008-08-26 18:37:06 -07002019}
2020
2021/**
2022 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
2023 *
2024 * Attempt to configure interrupts using the best available
2025 * capabilities of the hardware and kernel.
2026 **/
2027void e1000e_set_interrupt_capability(struct e1000_adapter *adapter)
2028{
2029 int err;
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00002030 int i;
Bruce Allan4662e822008-08-26 18:37:06 -07002031
2032 switch (adapter->int_mode) {
2033 case E1000E_INT_MODE_MSIX:
2034 if (adapter->flags & FLAG_HAS_MSIX) {
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00002035 adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */
2036 adapter->msix_entries = kcalloc(adapter->num_vectors,
Bruce Allan17e813e2013-02-20 04:06:01 +00002037 sizeof(struct
2038 msix_entry),
2039 GFP_KERNEL);
Bruce Allan4662e822008-08-26 18:37:06 -07002040 if (adapter->msix_entries) {
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00002041 for (i = 0; i < adapter->num_vectors; i++)
Bruce Allan4662e822008-08-26 18:37:06 -07002042 adapter->msix_entries[i].entry = i;
2043
2044 err = pci_enable_msix(adapter->pdev,
2045 adapter->msix_entries,
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00002046 adapter->num_vectors);
Bruce Allanb1cdfea2010-12-11 05:53:47 +00002047 if (err == 0)
Bruce Allan4662e822008-08-26 18:37:06 -07002048 return;
2049 }
2050 /* MSI-X failed, so fall through and try MSI */
Jeff Kirsheref456f82011-11-03 11:40:28 +00002051 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n");
Bruce Allan4662e822008-08-26 18:37:06 -07002052 e1000e_reset_interrupt_capability(adapter);
2053 }
2054 adapter->int_mode = E1000E_INT_MODE_MSI;
2055 /* Fall through */
2056 case E1000E_INT_MODE_MSI:
2057 if (!pci_enable_msi(adapter->pdev)) {
2058 adapter->flags |= FLAG_MSI_ENABLED;
2059 } else {
2060 adapter->int_mode = E1000E_INT_MODE_LEGACY;
Jeff Kirsheref456f82011-11-03 11:40:28 +00002061 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n");
Bruce Allan4662e822008-08-26 18:37:06 -07002062 }
2063 /* Fall through */
2064 case E1000E_INT_MODE_LEGACY:
2065 /* Don't do anything; this is the system default */
2066 break;
2067 }
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00002068
2069 /* store the number of vectors being used */
2070 adapter->num_vectors = 1;
Bruce Allan4662e822008-08-26 18:37:06 -07002071}
2072
2073/**
2074 * e1000_request_msix - Initialize MSI-X interrupts
2075 *
2076 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
2077 * kernel.
2078 **/
2079static int e1000_request_msix(struct e1000_adapter *adapter)
2080{
2081 struct net_device *netdev = adapter->netdev;
2082 int err = 0, vector = 0;
2083
2084 if (strlen(netdev->name) < (IFNAMSIZ - 5))
Bruce Allan79f5e842011-01-19 04:20:59 +00002085 snprintf(adapter->rx_ring->name,
2086 sizeof(adapter->rx_ring->name) - 1,
2087 "%s-rx-0", netdev->name);
Bruce Allan4662e822008-08-26 18:37:06 -07002088 else
2089 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
2090 err = request_irq(adapter->msix_entries[vector].vector,
Joe Perchesa0607fd2009-11-18 23:29:17 -08002091 e1000_intr_msix_rx, 0, adapter->rx_ring->name,
Bruce Allan4662e822008-08-26 18:37:06 -07002092 netdev);
2093 if (err)
Bruce Allan5015e532012-02-08 02:55:56 +00002094 return err;
Bruce Allanc5083cf2011-12-16 00:45:40 +00002095 adapter->rx_ring->itr_register = adapter->hw.hw_addr +
2096 E1000_EITR_82574(vector);
Bruce Allan4662e822008-08-26 18:37:06 -07002097 adapter->rx_ring->itr_val = adapter->itr;
2098 vector++;
2099
2100 if (strlen(netdev->name) < (IFNAMSIZ - 5))
Bruce Allan79f5e842011-01-19 04:20:59 +00002101 snprintf(adapter->tx_ring->name,
2102 sizeof(adapter->tx_ring->name) - 1,
2103 "%s-tx-0", netdev->name);
Bruce Allan4662e822008-08-26 18:37:06 -07002104 else
2105 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
2106 err = request_irq(adapter->msix_entries[vector].vector,
Joe Perchesa0607fd2009-11-18 23:29:17 -08002107 e1000_intr_msix_tx, 0, adapter->tx_ring->name,
Bruce Allan4662e822008-08-26 18:37:06 -07002108 netdev);
2109 if (err)
Bruce Allan5015e532012-02-08 02:55:56 +00002110 return err;
Bruce Allanc5083cf2011-12-16 00:45:40 +00002111 adapter->tx_ring->itr_register = adapter->hw.hw_addr +
2112 E1000_EITR_82574(vector);
Bruce Allan4662e822008-08-26 18:37:06 -07002113 adapter->tx_ring->itr_val = adapter->itr;
2114 vector++;
2115
2116 err = request_irq(adapter->msix_entries[vector].vector,
Joe Perchesa0607fd2009-11-18 23:29:17 -08002117 e1000_msix_other, 0, netdev->name, netdev);
Bruce Allan4662e822008-08-26 18:37:06 -07002118 if (err)
Bruce Allan5015e532012-02-08 02:55:56 +00002119 return err;
Bruce Allan4662e822008-08-26 18:37:06 -07002120
2121 e1000_configure_msix(adapter);
Bruce Allan5015e532012-02-08 02:55:56 +00002122
Bruce Allan4662e822008-08-26 18:37:06 -07002123 return 0;
Bruce Allan4662e822008-08-26 18:37:06 -07002124}
2125
Bruce Allanf8d59f72008-08-08 18:36:11 -07002126/**
2127 * e1000_request_irq - initialize interrupts
2128 *
2129 * Attempts to configure interrupts using the best available
2130 * capabilities of the hardware and kernel.
2131 **/
Auke Kokbc7f75f2007-09-17 12:30:59 -07002132static int e1000_request_irq(struct e1000_adapter *adapter)
2133{
2134 struct net_device *netdev = adapter->netdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002135 int err;
2136
Bruce Allan4662e822008-08-26 18:37:06 -07002137 if (adapter->msix_entries) {
2138 err = e1000_request_msix(adapter);
2139 if (!err)
2140 return err;
2141 /* fall back to MSI */
2142 e1000e_reset_interrupt_capability(adapter);
2143 adapter->int_mode = E1000E_INT_MODE_MSI;
2144 e1000e_set_interrupt_capability(adapter);
2145 }
2146 if (adapter->flags & FLAG_MSI_ENABLED) {
Joe Perchesa0607fd2009-11-18 23:29:17 -08002147 err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0,
Bruce Allan4662e822008-08-26 18:37:06 -07002148 netdev->name, netdev);
2149 if (!err)
2150 return err;
2151
2152 /* fall back to legacy interrupt */
2153 e1000e_reset_interrupt_capability(adapter);
2154 adapter->int_mode = E1000E_INT_MODE_LEGACY;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002155 }
2156
Joe Perchesa0607fd2009-11-18 23:29:17 -08002157 err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED,
Bruce Allan4662e822008-08-26 18:37:06 -07002158 netdev->name, netdev);
2159 if (err)
Bruce Allanf8d59f72008-08-08 18:36:11 -07002160 e_err("Unable to allocate interrupt, Error: %d\n", err);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002161
2162 return err;
2163}
2164
2165static void e1000_free_irq(struct e1000_adapter *adapter)
2166{
2167 struct net_device *netdev = adapter->netdev;
2168
Bruce Allan4662e822008-08-26 18:37:06 -07002169 if (adapter->msix_entries) {
2170 int vector = 0;
2171
2172 free_irq(adapter->msix_entries[vector].vector, netdev);
2173 vector++;
2174
2175 free_irq(adapter->msix_entries[vector].vector, netdev);
2176 vector++;
2177
2178 /* Other Causes interrupt vector */
2179 free_irq(adapter->msix_entries[vector].vector, netdev);
2180 return;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002181 }
Bruce Allan4662e822008-08-26 18:37:06 -07002182
2183 free_irq(adapter->pdev->irq, netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002184}
2185
2186/**
2187 * e1000_irq_disable - Mask off interrupt generation on the NIC
2188 **/
2189static void e1000_irq_disable(struct e1000_adapter *adapter)
2190{
2191 struct e1000_hw *hw = &adapter->hw;
2192
Auke Kokbc7f75f2007-09-17 12:30:59 -07002193 ew32(IMC, ~0);
Bruce Allan4662e822008-08-26 18:37:06 -07002194 if (adapter->msix_entries)
2195 ew32(EIAC_82574, 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002196 e1e_flush();
Jeff Kirsher8e86acd2010-08-02 14:27:23 +00002197
2198 if (adapter->msix_entries) {
2199 int i;
2200 for (i = 0; i < adapter->num_vectors; i++)
2201 synchronize_irq(adapter->msix_entries[i].vector);
2202 } else {
2203 synchronize_irq(adapter->pdev->irq);
2204 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07002205}
2206
2207/**
2208 * e1000_irq_enable - Enable default interrupt generation settings
2209 **/
2210static void e1000_irq_enable(struct e1000_adapter *adapter)
2211{
2212 struct e1000_hw *hw = &adapter->hw;
2213
Bruce Allan4662e822008-08-26 18:37:06 -07002214 if (adapter->msix_entries) {
2215 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574);
2216 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC);
Bruce Allan94fb8482013-01-23 09:00:03 +00002217 } else if (hw->mac.type == e1000_pch_lpt) {
2218 ew32(IMS, IMS_ENABLE_MASK | E1000_IMS_ECCER);
Bruce Allan4662e822008-08-26 18:37:06 -07002219 } else {
2220 ew32(IMS, IMS_ENABLE_MASK);
2221 }
Jesse Brandeburg74ef9c32008-03-21 11:06:52 -07002222 e1e_flush();
Auke Kokbc7f75f2007-09-17 12:30:59 -07002223}
2224
2225/**
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002226 * e1000e_get_hw_control - get control of the h/w from f/w
Auke Kokbc7f75f2007-09-17 12:30:59 -07002227 * @adapter: address of board private structure
2228 *
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002229 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
Auke Kokbc7f75f2007-09-17 12:30:59 -07002230 * For ASF and Pass Through versions of f/w this means that
2231 * the driver is loaded. For AMT version (only with 82573)
2232 * of the f/w this means that the network i/f is open.
2233 **/
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002234void e1000e_get_hw_control(struct e1000_adapter *adapter)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002235{
2236 struct e1000_hw *hw = &adapter->hw;
2237 u32 ctrl_ext;
2238 u32 swsm;
2239
2240 /* Let firmware know the driver has taken over */
2241 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
2242 swsm = er32(SWSM);
2243 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
2244 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
2245 ctrl_ext = er32(CTRL_EXT);
Bruce Allanad680762008-03-28 09:15:03 -07002246 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002247 }
2248}
2249
2250/**
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002251 * e1000e_release_hw_control - release control of the h/w to f/w
Auke Kokbc7f75f2007-09-17 12:30:59 -07002252 * @adapter: address of board private structure
2253 *
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002254 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
Auke Kokbc7f75f2007-09-17 12:30:59 -07002255 * For ASF and Pass Through versions of f/w this means that the
2256 * driver is no longer loaded. For AMT version (only with 82573) i
2257 * of the f/w this means that the network i/f is closed.
2258 *
2259 **/
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002260void e1000e_release_hw_control(struct e1000_adapter *adapter)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002261{
2262 struct e1000_hw *hw = &adapter->hw;
2263 u32 ctrl_ext;
2264 u32 swsm;
2265
2266 /* Let firmware taken over control of h/w */
2267 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
2268 swsm = er32(SWSM);
2269 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
2270 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
2271 ctrl_ext = er32(CTRL_EXT);
Bruce Allanad680762008-03-28 09:15:03 -07002272 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002273 }
2274}
2275
Auke Kokbc7f75f2007-09-17 12:30:59 -07002276/**
Ben Hutchings49ce9c22012-07-10 10:56:00 +00002277 * e1000_alloc_ring_dma - allocate memory for a ring structure
Auke Kokbc7f75f2007-09-17 12:30:59 -07002278 **/
2279static int e1000_alloc_ring_dma(struct e1000_adapter *adapter,
2280 struct e1000_ring *ring)
2281{
2282 struct pci_dev *pdev = adapter->pdev;
2283
2284 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma,
2285 GFP_KERNEL);
2286 if (!ring->desc)
2287 return -ENOMEM;
2288
2289 return 0;
2290}
2291
2292/**
2293 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
Bruce Allan55aa6982011-12-16 00:45:45 +00002294 * @tx_ring: Tx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07002295 *
2296 * Return 0 on success, negative on failure
2297 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00002298int e1000e_setup_tx_resources(struct e1000_ring *tx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002299{
Bruce Allan55aa6982011-12-16 00:45:45 +00002300 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002301 int err = -ENOMEM, size;
2302
2303 size = sizeof(struct e1000_buffer) * tx_ring->count;
Eric Dumazet89bf67f2010-11-22 00:15:06 +00002304 tx_ring->buffer_info = vzalloc(size);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002305 if (!tx_ring->buffer_info)
2306 goto err;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002307
2308 /* round up to nearest 4K */
2309 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
2310 tx_ring->size = ALIGN(tx_ring->size, 4096);
2311
2312 err = e1000_alloc_ring_dma(adapter, tx_ring);
2313 if (err)
2314 goto err;
2315
2316 tx_ring->next_to_use = 0;
2317 tx_ring->next_to_clean = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002318
2319 return 0;
2320err:
2321 vfree(tx_ring->buffer_info);
Jeff Kirsher44defeb2008-08-04 17:20:41 -07002322 e_err("Unable to allocate memory for the transmit descriptor ring\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07002323 return err;
2324}
2325
2326/**
2327 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
Bruce Allan55aa6982011-12-16 00:45:45 +00002328 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07002329 *
2330 * Returns 0 on success, negative on failure
2331 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00002332int e1000e_setup_rx_resources(struct e1000_ring *rx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002333{
Bruce Allan55aa6982011-12-16 00:45:45 +00002334 struct e1000_adapter *adapter = rx_ring->adapter;
Auke Kok47f44e42007-10-25 13:57:44 -07002335 struct e1000_buffer *buffer_info;
2336 int i, size, desc_len, err = -ENOMEM;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002337
2338 size = sizeof(struct e1000_buffer) * rx_ring->count;
Eric Dumazet89bf67f2010-11-22 00:15:06 +00002339 rx_ring->buffer_info = vzalloc(size);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002340 if (!rx_ring->buffer_info)
2341 goto err;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002342
Auke Kok47f44e42007-10-25 13:57:44 -07002343 for (i = 0; i < rx_ring->count; i++) {
2344 buffer_info = &rx_ring->buffer_info[i];
2345 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS,
2346 sizeof(struct e1000_ps_page),
2347 GFP_KERNEL);
2348 if (!buffer_info->ps_pages)
2349 goto err_pages;
2350 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07002351
2352 desc_len = sizeof(union e1000_rx_desc_packet_split);
2353
2354 /* Round up to nearest 4K */
2355 rx_ring->size = rx_ring->count * desc_len;
2356 rx_ring->size = ALIGN(rx_ring->size, 4096);
2357
2358 err = e1000_alloc_ring_dma(adapter, rx_ring);
2359 if (err)
Auke Kok47f44e42007-10-25 13:57:44 -07002360 goto err_pages;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002361
2362 rx_ring->next_to_clean = 0;
2363 rx_ring->next_to_use = 0;
2364 rx_ring->rx_skb_top = NULL;
2365
2366 return 0;
Auke Kok47f44e42007-10-25 13:57:44 -07002367
2368err_pages:
2369 for (i = 0; i < rx_ring->count; i++) {
2370 buffer_info = &rx_ring->buffer_info[i];
2371 kfree(buffer_info->ps_pages);
2372 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07002373err:
2374 vfree(rx_ring->buffer_info);
Bruce Allane9262442010-11-24 06:02:06 +00002375 e_err("Unable to allocate memory for the receive descriptor ring\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07002376 return err;
2377}
2378
2379/**
2380 * e1000_clean_tx_ring - Free Tx Buffers
Bruce Allan55aa6982011-12-16 00:45:45 +00002381 * @tx_ring: Tx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07002382 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00002383static void e1000_clean_tx_ring(struct e1000_ring *tx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002384{
Bruce Allan55aa6982011-12-16 00:45:45 +00002385 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002386 struct e1000_buffer *buffer_info;
2387 unsigned long size;
2388 unsigned int i;
2389
2390 for (i = 0; i < tx_ring->count; i++) {
2391 buffer_info = &tx_ring->buffer_info[i];
Bruce Allan55aa6982011-12-16 00:45:45 +00002392 e1000_put_txbuf(tx_ring, buffer_info);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002393 }
2394
Tom Herbert3f0cfa32011-11-28 16:33:16 +00002395 netdev_reset_queue(adapter->netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002396 size = sizeof(struct e1000_buffer) * tx_ring->count;
2397 memset(tx_ring->buffer_info, 0, size);
2398
2399 memset(tx_ring->desc, 0, tx_ring->size);
2400
2401 tx_ring->next_to_use = 0;
2402 tx_ring->next_to_clean = 0;
2403
Bruce Allanc5083cf2011-12-16 00:45:40 +00002404 writel(0, tx_ring->head);
Bruce Allanbdc125f2012-03-20 03:47:52 +00002405 if (tx_ring->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
2406 e1000e_update_tdt_wa(tx_ring, 0);
2407 else
2408 writel(0, tx_ring->tail);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002409}
2410
2411/**
2412 * e1000e_free_tx_resources - Free Tx Resources per Queue
Bruce Allan55aa6982011-12-16 00:45:45 +00002413 * @tx_ring: Tx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07002414 *
2415 * Free all transmit software resources
2416 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00002417void e1000e_free_tx_resources(struct e1000_ring *tx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002418{
Bruce Allan55aa6982011-12-16 00:45:45 +00002419 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002420 struct pci_dev *pdev = adapter->pdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002421
Bruce Allan55aa6982011-12-16 00:45:45 +00002422 e1000_clean_tx_ring(tx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002423
2424 vfree(tx_ring->buffer_info);
2425 tx_ring->buffer_info = NULL;
2426
2427 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
2428 tx_ring->dma);
2429 tx_ring->desc = NULL;
2430}
2431
2432/**
2433 * e1000e_free_rx_resources - Free Rx Resources
Bruce Allan55aa6982011-12-16 00:45:45 +00002434 * @rx_ring: Rx descriptor ring
Auke Kokbc7f75f2007-09-17 12:30:59 -07002435 *
2436 * Free all receive software resources
2437 **/
Bruce Allan55aa6982011-12-16 00:45:45 +00002438void e1000e_free_rx_resources(struct e1000_ring *rx_ring)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002439{
Bruce Allan55aa6982011-12-16 00:45:45 +00002440 struct e1000_adapter *adapter = rx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002441 struct pci_dev *pdev = adapter->pdev;
Auke Kok47f44e42007-10-25 13:57:44 -07002442 int i;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002443
Bruce Allan55aa6982011-12-16 00:45:45 +00002444 e1000_clean_rx_ring(rx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002445
Bruce Allanb1cdfea2010-12-11 05:53:47 +00002446 for (i = 0; i < rx_ring->count; i++)
Auke Kok47f44e42007-10-25 13:57:44 -07002447 kfree(rx_ring->buffer_info[i].ps_pages);
Auke Kok47f44e42007-10-25 13:57:44 -07002448
Auke Kokbc7f75f2007-09-17 12:30:59 -07002449 vfree(rx_ring->buffer_info);
2450 rx_ring->buffer_info = NULL;
2451
Auke Kokbc7f75f2007-09-17 12:30:59 -07002452 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
2453 rx_ring->dma);
2454 rx_ring->desc = NULL;
2455}
2456
2457/**
2458 * e1000_update_itr - update the dynamic ITR value based on statistics
Auke Kok489815c2008-02-21 15:11:07 -08002459 * @adapter: pointer to adapter
2460 * @itr_setting: current adapter->itr
2461 * @packets: the number of packets during this measurement interval
2462 * @bytes: the number of bytes during this measurement interval
2463 *
Auke Kokbc7f75f2007-09-17 12:30:59 -07002464 * Stores a new ITR value based on packets and byte
2465 * counts during the last interrupt. The advantage of per interrupt
2466 * computation is faster updates and more accurate ITR for the current
2467 * traffic pattern. Constants in this function were computed
2468 * based on theoretical maximum wire speed and thresholds were set based
2469 * on testing data as well as attempting to minimize response time
Bruce Allan4662e822008-08-26 18:37:06 -07002470 * while increasing bulk throughput. This functionality is controlled
2471 * by the InterruptThrottleRate module parameter.
Auke Kokbc7f75f2007-09-17 12:30:59 -07002472 **/
Bruce Allan8bb62862013-01-16 08:46:49 +00002473static unsigned int e1000_update_itr(u16 itr_setting, int packets, int bytes)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002474{
2475 unsigned int retval = itr_setting;
2476
2477 if (packets == 0)
Bruce Allan5015e532012-02-08 02:55:56 +00002478 return itr_setting;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002479
2480 switch (itr_setting) {
2481 case lowest_latency:
2482 /* handle TSO and jumbo frames */
Bruce Allan362e20c2013-02-20 04:05:45 +00002483 if (bytes / packets > 8000)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002484 retval = bulk_latency;
Bruce Allanb1cdfea2010-12-11 05:53:47 +00002485 else if ((packets < 5) && (bytes > 512))
Auke Kokbc7f75f2007-09-17 12:30:59 -07002486 retval = low_latency;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002487 break;
Bruce Allane80bd1d2013-05-01 01:19:46 +00002488 case low_latency: /* 50 usec aka 20000 ints/s */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002489 if (bytes > 10000) {
2490 /* this if handles the TSO accounting */
Bruce Allan362e20c2013-02-20 04:05:45 +00002491 if (bytes / packets > 8000)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002492 retval = bulk_latency;
Bruce Allan362e20c2013-02-20 04:05:45 +00002493 else if ((packets < 10) || ((bytes / packets) > 1200))
Auke Kokbc7f75f2007-09-17 12:30:59 -07002494 retval = bulk_latency;
Bruce Allanb1cdfea2010-12-11 05:53:47 +00002495 else if ((packets > 35))
Auke Kokbc7f75f2007-09-17 12:30:59 -07002496 retval = lowest_latency;
Bruce Allan362e20c2013-02-20 04:05:45 +00002497 } else if (bytes / packets > 2000) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07002498 retval = bulk_latency;
2499 } else if (packets <= 2 && bytes < 512) {
2500 retval = lowest_latency;
2501 }
2502 break;
Bruce Allane80bd1d2013-05-01 01:19:46 +00002503 case bulk_latency: /* 250 usec aka 4000 ints/s */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002504 if (bytes > 25000) {
Bruce Allanb1cdfea2010-12-11 05:53:47 +00002505 if (packets > 35)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002506 retval = low_latency;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002507 } else if (bytes < 6000) {
2508 retval = low_latency;
2509 }
2510 break;
2511 }
2512
Auke Kokbc7f75f2007-09-17 12:30:59 -07002513 return retval;
2514}
2515
2516static void e1000_set_itr(struct e1000_adapter *adapter)
2517{
Auke Kokbc7f75f2007-09-17 12:30:59 -07002518 u16 current_itr;
2519 u32 new_itr = adapter->itr;
2520
2521 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2522 if (adapter->link_speed != SPEED_1000) {
2523 current_itr = 0;
2524 new_itr = 4000;
2525 goto set_itr_now;
2526 }
2527
Bruce Allan828bac82010-09-29 21:39:37 +00002528 if (adapter->flags2 & FLAG2_DISABLE_AIM) {
2529 new_itr = 0;
2530 goto set_itr_now;
2531 }
2532
Bruce Allan8bb62862013-01-16 08:46:49 +00002533 adapter->tx_itr = e1000_update_itr(adapter->tx_itr,
2534 adapter->total_tx_packets,
2535 adapter->total_tx_bytes);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002536 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2537 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
2538 adapter->tx_itr = low_latency;
2539
Bruce Allan8bb62862013-01-16 08:46:49 +00002540 adapter->rx_itr = e1000_update_itr(adapter->rx_itr,
2541 adapter->total_rx_packets,
2542 adapter->total_rx_bytes);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002543 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2544 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
2545 adapter->rx_itr = low_latency;
2546
2547 current_itr = max(adapter->rx_itr, adapter->tx_itr);
2548
Auke Kokbc7f75f2007-09-17 12:30:59 -07002549 /* counts and packets in update_itr are dependent on these numbers */
Bruce Allan33550ce2013-02-20 04:06:16 +00002550 switch (current_itr) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07002551 case lowest_latency:
2552 new_itr = 70000;
2553 break;
2554 case low_latency:
Bruce Allane80bd1d2013-05-01 01:19:46 +00002555 new_itr = 20000; /* aka hwitr = ~200 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002556 break;
2557 case bulk_latency:
2558 new_itr = 4000;
2559 break;
2560 default:
2561 break;
2562 }
2563
2564set_itr_now:
2565 if (new_itr != adapter->itr) {
Bruce Allane921eb12012-11-28 09:28:37 +00002566 /* this attempts to bias the interrupt rate towards Bulk
Auke Kokbc7f75f2007-09-17 12:30:59 -07002567 * by adding intermediate steps when interrupt rate is
Bruce Allanad680762008-03-28 09:15:03 -07002568 * increasing
2569 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002570 new_itr = new_itr > adapter->itr ?
Bruce Allanf0ff4392013-02-20 04:05:39 +00002571 min(adapter->itr + (new_itr >> 2), new_itr) : new_itr;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002572 adapter->itr = new_itr;
Bruce Allan4662e822008-08-26 18:37:06 -07002573 adapter->rx_ring->itr_val = new_itr;
2574 if (adapter->msix_entries)
2575 adapter->rx_ring->set_itr = 1;
2576 else
Bruce Allane3d14b02012-12-05 06:26:51 +00002577 e1000e_write_itr(adapter, new_itr);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002578 }
2579}
2580
2581/**
Matthew Vick22a4cca2012-07-12 00:02:42 +00002582 * e1000e_write_itr - write the ITR value to the appropriate registers
2583 * @adapter: address of board private structure
2584 * @itr: new ITR value to program
2585 *
2586 * e1000e_write_itr determines if the adapter is in MSI-X mode
2587 * and, if so, writes the EITR registers with the ITR value.
2588 * Otherwise, it writes the ITR value into the ITR register.
2589 **/
2590void e1000e_write_itr(struct e1000_adapter *adapter, u32 itr)
2591{
2592 struct e1000_hw *hw = &adapter->hw;
2593 u32 new_itr = itr ? 1000000000 / (itr * 256) : 0;
2594
2595 if (adapter->msix_entries) {
2596 int vector;
2597
2598 for (vector = 0; vector < adapter->num_vectors; vector++)
2599 writel(new_itr, hw->hw_addr + E1000_EITR_82574(vector));
2600 } else {
2601 ew32(ITR, new_itr);
2602 }
2603}
2604
2605/**
Bruce Allan4662e822008-08-26 18:37:06 -07002606 * e1000_alloc_queues - Allocate memory for all rings
2607 * @adapter: board private structure to initialize
2608 **/
Bill Pemberton9f9a12f2012-12-03 09:24:25 -05002609static int e1000_alloc_queues(struct e1000_adapter *adapter)
Bruce Allan4662e822008-08-26 18:37:06 -07002610{
Bruce Allan55aa6982011-12-16 00:45:45 +00002611 int size = sizeof(struct e1000_ring);
2612
2613 adapter->tx_ring = kzalloc(size, GFP_KERNEL);
Bruce Allan4662e822008-08-26 18:37:06 -07002614 if (!adapter->tx_ring)
2615 goto err;
Bruce Allan55aa6982011-12-16 00:45:45 +00002616 adapter->tx_ring->count = adapter->tx_ring_count;
2617 adapter->tx_ring->adapter = adapter;
Bruce Allan4662e822008-08-26 18:37:06 -07002618
Bruce Allan55aa6982011-12-16 00:45:45 +00002619 adapter->rx_ring = kzalloc(size, GFP_KERNEL);
Bruce Allan4662e822008-08-26 18:37:06 -07002620 if (!adapter->rx_ring)
2621 goto err;
Bruce Allan55aa6982011-12-16 00:45:45 +00002622 adapter->rx_ring->count = adapter->rx_ring_count;
2623 adapter->rx_ring->adapter = adapter;
Bruce Allan4662e822008-08-26 18:37:06 -07002624
2625 return 0;
2626err:
2627 e_err("Unable to allocate memory for queues\n");
2628 kfree(adapter->rx_ring);
2629 kfree(adapter->tx_ring);
2630 return -ENOMEM;
2631}
2632
2633/**
Bruce Allanc58c8a72012-03-20 03:48:19 +00002634 * e1000e_poll - NAPI Rx polling callback
Bruce Allanad680762008-03-28 09:15:03 -07002635 * @napi: struct associated with this polling callback
Bruce Allanc58c8a72012-03-20 03:48:19 +00002636 * @weight: number of packets driver is allowed to process this poll
Auke Kokbc7f75f2007-09-17 12:30:59 -07002637 **/
Bruce Allanc58c8a72012-03-20 03:48:19 +00002638static int e1000e_poll(struct napi_struct *napi, int weight)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002639{
Bruce Allanc58c8a72012-03-20 03:48:19 +00002640 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter,
2641 napi);
Bruce Allan4662e822008-08-26 18:37:06 -07002642 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002643 struct net_device *poll_dev = adapter->netdev;
Andy Gospodarek679e8a02009-06-18 11:57:37 +00002644 int tx_cleaned = 1, work_done = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002645
Wang Chen4cf16532008-11-12 23:38:14 -08002646 adapter = netdev_priv(poll_dev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002647
Bruce Allanc58c8a72012-03-20 03:48:19 +00002648 if (!adapter->msix_entries ||
2649 (adapter->rx_ring->ims_val & adapter->tx_ring->ims_val))
2650 tx_cleaned = e1000_clean_tx_irq(adapter->tx_ring);
Bruce Allan4662e822008-08-26 18:37:06 -07002651
Bruce Allanc58c8a72012-03-20 03:48:19 +00002652 adapter->clean_rx(adapter->rx_ring, &work_done, weight);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002653
Alexander Duyck12d04a32009-03-25 22:05:03 +00002654 if (!tx_cleaned)
Bruce Allanc58c8a72012-03-20 03:48:19 +00002655 work_done = weight;
David S. Millerd2c7ddd2008-01-15 22:43:24 -08002656
Bruce Allanc58c8a72012-03-20 03:48:19 +00002657 /* If weight not fully consumed, exit the polling mode */
2658 if (work_done < weight) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07002659 if (adapter->itr_setting & 3)
2660 e1000_set_itr(adapter);
Ben Hutchings288379f2009-01-19 16:43:59 -08002661 napi_complete(napi);
Jesse Brandeburga3c69fe2009-03-25 22:05:41 +00002662 if (!test_bit(__E1000_DOWN, &adapter->state)) {
2663 if (adapter->msix_entries)
2664 ew32(IMS, adapter->rx_ring->ims_val);
2665 else
2666 e1000_irq_enable(adapter);
2667 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07002668 }
2669
2670 return work_done;
2671}
2672
Patrick McHardy80d5c362013-04-19 02:04:28 +00002673static int e1000_vlan_rx_add_vid(struct net_device *netdev,
Bruce Allan603cdca2013-05-01 03:48:11 +00002674 __always_unused __be16 proto, u16 vid)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002675{
2676 struct e1000_adapter *adapter = netdev_priv(netdev);
2677 struct e1000_hw *hw = &adapter->hw;
2678 u32 vfta, index;
2679
2680 /* don't update vlan cookie if already programmed */
2681 if ((adapter->hw.mng_cookie.status &
2682 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2683 (vid == adapter->mng_vlan_id))
Jiri Pirko8e586132011-12-08 19:52:37 -05002684 return 0;
Bruce Allancaaddaf2009-12-01 15:46:43 +00002685
Auke Kokbc7f75f2007-09-17 12:30:59 -07002686 /* add VID to filter table */
Bruce Allancaaddaf2009-12-01 15:46:43 +00002687 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2688 index = (vid >> 5) & 0x7F;
2689 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2690 vfta |= (1 << (vid & 0x1F));
2691 hw->mac.ops.write_vfta(hw, index, vfta);
2692 }
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002693
2694 set_bit(vid, adapter->active_vlans);
Jiri Pirko8e586132011-12-08 19:52:37 -05002695
2696 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002697}
2698
Patrick McHardy80d5c362013-04-19 02:04:28 +00002699static int e1000_vlan_rx_kill_vid(struct net_device *netdev,
Bruce Allan603cdca2013-05-01 03:48:11 +00002700 __always_unused __be16 proto, u16 vid)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002701{
2702 struct e1000_adapter *adapter = netdev_priv(netdev);
2703 struct e1000_hw *hw = &adapter->hw;
2704 u32 vfta, index;
2705
Auke Kokbc7f75f2007-09-17 12:30:59 -07002706 if ((adapter->hw.mng_cookie.status &
2707 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2708 (vid == adapter->mng_vlan_id)) {
2709 /* release control to f/w */
Bruce Allan31dbe5b2011-01-06 14:29:52 +00002710 e1000e_release_hw_control(adapter);
Jiri Pirko8e586132011-12-08 19:52:37 -05002711 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002712 }
2713
2714 /* remove VID from filter table */
Bruce Allancaaddaf2009-12-01 15:46:43 +00002715 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2716 index = (vid >> 5) & 0x7F;
2717 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2718 vfta &= ~(1 << (vid & 0x1F));
2719 hw->mac.ops.write_vfta(hw, index, vfta);
2720 }
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002721
2722 clear_bit(vid, adapter->active_vlans);
Jiri Pirko8e586132011-12-08 19:52:37 -05002723
2724 return 0;
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002725}
2726
2727/**
2728 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
2729 * @adapter: board private structure to initialize
2730 **/
2731static void e1000e_vlan_filter_disable(struct e1000_adapter *adapter)
2732{
2733 struct net_device *netdev = adapter->netdev;
2734 struct e1000_hw *hw = &adapter->hw;
2735 u32 rctl;
2736
2737 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2738 /* disable VLAN receive filtering */
2739 rctl = er32(RCTL);
2740 rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN);
2741 ew32(RCTL, rctl);
2742
2743 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) {
Patrick McHardy80d5c362013-04-19 02:04:28 +00002744 e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q),
2745 adapter->mng_vlan_id);
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002746 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2747 }
2748 }
2749}
2750
2751/**
2752 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
2753 * @adapter: board private structure to initialize
2754 **/
2755static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter)
2756{
2757 struct e1000_hw *hw = &adapter->hw;
2758 u32 rctl;
2759
2760 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2761 /* enable VLAN receive filtering */
2762 rctl = er32(RCTL);
2763 rctl |= E1000_RCTL_VFE;
2764 rctl &= ~E1000_RCTL_CFIEN;
2765 ew32(RCTL, rctl);
2766 }
2767}
2768
2769/**
2770 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping
2771 * @adapter: board private structure to initialize
2772 **/
2773static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter)
2774{
2775 struct e1000_hw *hw = &adapter->hw;
2776 u32 ctrl;
2777
2778 /* disable VLAN tag insert/strip */
2779 ctrl = er32(CTRL);
2780 ctrl &= ~E1000_CTRL_VME;
2781 ew32(CTRL, ctrl);
2782}
2783
2784/**
2785 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
2786 * @adapter: board private structure to initialize
2787 **/
2788static void e1000e_vlan_strip_enable(struct e1000_adapter *adapter)
2789{
2790 struct e1000_hw *hw = &adapter->hw;
2791 u32 ctrl;
2792
2793 /* enable VLAN tag insert/strip */
2794 ctrl = er32(CTRL);
2795 ctrl |= E1000_CTRL_VME;
2796 ew32(CTRL, ctrl);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002797}
2798
2799static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
2800{
2801 struct net_device *netdev = adapter->netdev;
2802 u16 vid = adapter->hw.mng_cookie.vlan_id;
2803 u16 old_vid = adapter->mng_vlan_id;
2804
Bruce Allane5fe2542013-02-20 04:06:27 +00002805 if (adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
Patrick McHardy80d5c362013-04-19 02:04:28 +00002806 e1000_vlan_rx_add_vid(netdev, htons(ETH_P_8021Q), vid);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002807 adapter->mng_vlan_id = vid;
2808 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07002809
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002810 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && (vid != old_vid))
Patrick McHardy80d5c362013-04-19 02:04:28 +00002811 e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q), old_vid);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002812}
2813
2814static void e1000_restore_vlan(struct e1000_adapter *adapter)
2815{
2816 u16 vid;
2817
Patrick McHardy80d5c362013-04-19 02:04:28 +00002818 e1000_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002819
Jeff Kirsher86d70e52011-03-25 16:01:01 +00002820 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
Patrick McHardy80d5c362013-04-19 02:04:28 +00002821 e1000_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002822}
2823
Bruce Allancd791612010-05-10 14:59:51 +00002824static void e1000_init_manageability_pt(struct e1000_adapter *adapter)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002825{
2826 struct e1000_hw *hw = &adapter->hw;
Bruce Allancd791612010-05-10 14:59:51 +00002827 u32 manc, manc2h, mdef, i, j;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002828
2829 if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
2830 return;
2831
2832 manc = er32(MANC);
2833
Bruce Allane921eb12012-11-28 09:28:37 +00002834 /* enable receiving management packets to the host. this will probably
Auke Kokbc7f75f2007-09-17 12:30:59 -07002835 * generate destination unreachable messages from the host OS, but
Bruce Allanad680762008-03-28 09:15:03 -07002836 * the packets will be handled on SMBUS
2837 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002838 manc |= E1000_MANC_EN_MNG2HOST;
2839 manc2h = er32(MANC2H);
Bruce Allancd791612010-05-10 14:59:51 +00002840
2841 switch (hw->mac.type) {
2842 default:
2843 manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664);
2844 break;
2845 case e1000_82574:
2846 case e1000_82583:
Bruce Allane921eb12012-11-28 09:28:37 +00002847 /* Check if IPMI pass-through decision filter already exists;
Bruce Allancd791612010-05-10 14:59:51 +00002848 * if so, enable it.
2849 */
2850 for (i = 0, j = 0; i < 8; i++) {
2851 mdef = er32(MDEF(i));
2852
2853 /* Ignore filters with anything other than IPMI ports */
Dan Carpenter3b21b502010-06-02 13:43:15 +00002854 if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
Bruce Allancd791612010-05-10 14:59:51 +00002855 continue;
2856
2857 /* Enable this decision filter in MANC2H */
2858 if (mdef)
2859 manc2h |= (1 << i);
2860
2861 j |= mdef;
2862 }
2863
2864 if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
2865 break;
2866
2867 /* Create new decision filter in an empty filter */
2868 for (i = 0, j = 0; i < 8; i++)
2869 if (er32(MDEF(i)) == 0) {
2870 ew32(MDEF(i), (E1000_MDEF_PORT_623 |
2871 E1000_MDEF_PORT_664));
2872 manc2h |= (1 << 1);
2873 j++;
2874 break;
2875 }
2876
2877 if (!j)
2878 e_warn("Unable to create IPMI pass-through filter\n");
2879 break;
2880 }
2881
Auke Kokbc7f75f2007-09-17 12:30:59 -07002882 ew32(MANC2H, manc2h);
2883 ew32(MANC, manc);
2884}
2885
2886/**
Bruce Allanaf667a22010-12-31 06:10:01 +00002887 * e1000_configure_tx - Configure Transmit Unit after Reset
Auke Kokbc7f75f2007-09-17 12:30:59 -07002888 * @adapter: board private structure
2889 *
2890 * Configure the Tx unit of the MAC after a reset.
2891 **/
2892static void e1000_configure_tx(struct e1000_adapter *adapter)
2893{
2894 struct e1000_hw *hw = &adapter->hw;
2895 struct e1000_ring *tx_ring = adapter->tx_ring;
2896 u64 tdba;
Bruce Allanc550b122011-12-16 00:46:17 +00002897 u32 tdlen, tarc;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002898
2899 /* Setup the HW Tx Head and Tail descriptor pointers */
2900 tdba = tx_ring->dma;
2901 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc);
Bruce Allan1e360522012-03-20 03:48:13 +00002902 ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32)));
2903 ew32(TDBAH(0), (tdba >> 32));
2904 ew32(TDLEN(0), tdlen);
2905 ew32(TDH(0), 0);
2906 ew32(TDT(0), 0);
2907 tx_ring->head = adapter->hw.hw_addr + E1000_TDH(0);
2908 tx_ring->tail = adapter->hw.hw_addr + E1000_TDT(0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002909
Auke Kokbc7f75f2007-09-17 12:30:59 -07002910 /* Set the Tx Interrupt Delay register */
2911 ew32(TIDV, adapter->tx_int_delay);
Bruce Allanad680762008-03-28 09:15:03 -07002912 /* Tx irq moderation */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002913 ew32(TADV, adapter->tx_abs_int_delay);
2914
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00002915 if (adapter->flags2 & FLAG2_DMA_BURST) {
2916 u32 txdctl = er32(TXDCTL(0));
2917 txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH |
2918 E1000_TXDCTL_WTHRESH);
Bruce Allane921eb12012-11-28 09:28:37 +00002919 /* set up some performance related parameters to encourage the
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00002920 * hardware to use the bus more efficiently in bursts, depends
2921 * on the tx_int_delay to be enabled,
Hiroaki SHIMODA8edc0e62012-10-10 15:34:20 +00002922 * wthresh = 1 ==> burst write is disabled to avoid Tx stalls
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00002923 * hthresh = 1 ==> prefetch when one or more available
2924 * pthresh = 0x1f ==> prefetch if internal cache 31 or less
2925 * BEWARE: this seems to work but should be considered first if
Bruce Allanaf667a22010-12-31 06:10:01 +00002926 * there are Tx hangs or other Tx related bugs
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00002927 */
2928 txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE;
2929 ew32(TXDCTL(0), txdctl);
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00002930 }
Bruce Allan56032be2011-12-16 00:46:01 +00002931 /* erratum work around: set txdctl the same for both queues */
2932 ew32(TXDCTL(1), er32(TXDCTL(0)));
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00002933
Auke Kokbc7f75f2007-09-17 12:30:59 -07002934 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) {
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002935 tarc = er32(TARC(0));
Bruce Allane921eb12012-11-28 09:28:37 +00002936 /* set the speed mode bit, we'll clear it if we're not at
Bruce Allanad680762008-03-28 09:15:03 -07002937 * gigabit link later
2938 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002939#define SPEED_MODE_BIT (1 << 21)
2940 tarc |= SPEED_MODE_BIT;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002941 ew32(TARC(0), tarc);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002942 }
2943
2944 /* errata: program both queues to unweighted RR */
2945 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) {
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002946 tarc = er32(TARC(0));
Auke Kokbc7f75f2007-09-17 12:30:59 -07002947 tarc |= 1;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002948 ew32(TARC(0), tarc);
2949 tarc = er32(TARC(1));
Auke Kokbc7f75f2007-09-17 12:30:59 -07002950 tarc |= 1;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002951 ew32(TARC(1), tarc);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002952 }
2953
Auke Kokbc7f75f2007-09-17 12:30:59 -07002954 /* Setup Transmit Descriptor Settings for eop descriptor */
2955 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
2956
2957 /* only set IDE if we are delaying interrupts using the timers */
2958 if (adapter->tx_int_delay)
2959 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
2960
2961 /* enable Report Status bit */
2962 adapter->txd_cmd |= E1000_TXD_CMD_RS;
2963
Bruce Allan57cde762012-02-22 09:02:58 +00002964 hw->mac.ops.config_collision_dist(hw);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002965}
2966
2967/**
2968 * e1000_setup_rctl - configure the receive control registers
2969 * @adapter: Board private structure
2970 **/
2971#define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2972 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2973static void e1000_setup_rctl(struct e1000_adapter *adapter)
2974{
2975 struct e1000_hw *hw = &adapter->hw;
2976 u32 rctl, rfctl;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002977 u32 pages = 0;
2978
Bruce Allan2fbe4522012-04-19 03:21:47 +00002979 /* Workaround Si errata on PCHx - configure jumbo frame flow */
Bruce Allanda1e2042013-06-21 09:07:02 +00002980 if ((hw->mac.type >= e1000_pch2lan) &&
2981 (adapter->netdev->mtu > ETH_DATA_LEN) &&
2982 e1000_lv_jumbo_workaround_ich8lan(hw, true))
2983 e_dbg("failed to enable jumbo frame workaround mode\n");
Bruce Allana1ce6472010-09-22 17:16:40 +00002984
Auke Kokbc7f75f2007-09-17 12:30:59 -07002985 /* Program MC offset vector base */
2986 rctl = er32(RCTL);
2987 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2988 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
Bruce Allanf0ff4392013-02-20 04:05:39 +00002989 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
2990 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002991
2992 /* Do not Store bad packets */
2993 rctl &= ~E1000_RCTL_SBP;
2994
2995 /* Enable Long Packet receive */
2996 if (adapter->netdev->mtu <= ETH_DATA_LEN)
2997 rctl &= ~E1000_RCTL_LPE;
2998 else
2999 rctl |= E1000_RCTL_LPE;
3000
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +00003001 /* Some systems expect that the CRC is included in SMBUS traffic. The
3002 * hardware strips the CRC before sending to both SMBUS (BMC) and to
3003 * host memory when this is enabled
3004 */
3005 if (adapter->flags2 & FLAG2_CRC_STRIPPING)
3006 rctl |= E1000_RCTL_SECRC;
Auke Kok5918bd82008-02-12 15:20:24 -08003007
Bruce Allana4f58f52009-06-02 11:29:18 +00003008 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
3009 if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) {
3010 u16 phy_data;
3011
3012 e1e_rphy(hw, PHY_REG(770, 26), &phy_data);
3013 phy_data &= 0xfff8;
3014 phy_data |= (1 << 2);
3015 e1e_wphy(hw, PHY_REG(770, 26), phy_data);
3016
3017 e1e_rphy(hw, 22, &phy_data);
3018 phy_data &= 0x0fff;
3019 phy_data |= (1 << 14);
3020 e1e_wphy(hw, 0x10, 0x2823);
3021 e1e_wphy(hw, 0x11, 0x0003);
3022 e1e_wphy(hw, 22, phy_data);
3023 }
3024
Auke Kokbc7f75f2007-09-17 12:30:59 -07003025 /* Setup buffer sizes */
3026 rctl &= ~E1000_RCTL_SZ_4096;
3027 rctl |= E1000_RCTL_BSEX;
3028 switch (adapter->rx_buffer_len) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07003029 case 2048:
3030 default:
3031 rctl |= E1000_RCTL_SZ_2048;
3032 rctl &= ~E1000_RCTL_BSEX;
3033 break;
3034 case 4096:
3035 rctl |= E1000_RCTL_SZ_4096;
3036 break;
3037 case 8192:
3038 rctl |= E1000_RCTL_SZ_8192;
3039 break;
3040 case 16384:
3041 rctl |= E1000_RCTL_SZ_16384;
3042 break;
3043 }
3044
Bruce Allan5f450212011-07-22 06:21:46 +00003045 /* Enable Extended Status in all Receive Descriptors */
3046 rfctl = er32(RFCTL);
3047 rfctl |= E1000_RFCTL_EXTEN;
Matthew Vickf6bd5572012-04-25 08:01:05 +00003048 ew32(RFCTL, rfctl);
Bruce Allan5f450212011-07-22 06:21:46 +00003049
Bruce Allane921eb12012-11-28 09:28:37 +00003050 /* 82571 and greater support packet-split where the protocol
Auke Kokbc7f75f2007-09-17 12:30:59 -07003051 * header is placed in skb->data and the packet data is
3052 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
3053 * In the case of a non-split, skb->data is linearly filled,
3054 * followed by the page buffers. Therefore, skb->data is
3055 * sized to hold the largest protocol header.
3056 *
3057 * allocations using alloc_page take too long for regular MTU
3058 * so only enable packet split for jumbo frames
3059 *
3060 * Using pages when the page size is greater than 16k wastes
3061 * a lot of memory, since we allocate 3 pages at all times
3062 * per packet.
3063 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003064 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
Bruce Allan79d4e902011-12-16 00:46:27 +00003065 if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE))
Auke Kokbc7f75f2007-09-17 12:30:59 -07003066 adapter->rx_ps_pages = pages;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07003067 else
3068 adapter->rx_ps_pages = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003069
3070 if (adapter->rx_ps_pages) {
Bruce Allan90da0662011-01-06 07:02:53 +00003071 u32 psrctl = 0;
3072
Auke Kok140a7482007-10-25 13:57:58 -07003073 /* Enable Packet split descriptors */
3074 rctl |= E1000_RCTL_DTYP_PS;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003075
Bruce Allane5fe2542013-02-20 04:06:27 +00003076 psrctl |= adapter->rx_ps_bsize0 >> E1000_PSRCTL_BSIZE0_SHIFT;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003077
3078 switch (adapter->rx_ps_pages) {
3079 case 3:
Bruce Allane5fe2542013-02-20 04:06:27 +00003080 psrctl |= PAGE_SIZE << E1000_PSRCTL_BSIZE3_SHIFT;
3081 /* fall-through */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003082 case 2:
Bruce Allane5fe2542013-02-20 04:06:27 +00003083 psrctl |= PAGE_SIZE << E1000_PSRCTL_BSIZE2_SHIFT;
3084 /* fall-through */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003085 case 1:
Bruce Allane5fe2542013-02-20 04:06:27 +00003086 psrctl |= PAGE_SIZE >> E1000_PSRCTL_BSIZE1_SHIFT;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003087 break;
3088 }
3089
3090 ew32(PSRCTL, psrctl);
3091 }
3092
Ben Greearcf955e62012-02-11 15:39:51 +00003093 /* This is useful for sniffing bad packets. */
3094 if (adapter->netdev->features & NETIF_F_RXALL) {
3095 /* UPE and MPE will be handled by normal PROMISC logic
Bruce Allane921eb12012-11-28 09:28:37 +00003096 * in e1000e_set_rx_mode
3097 */
Bruce Allane80bd1d2013-05-01 01:19:46 +00003098 rctl |= (E1000_RCTL_SBP | /* Receive bad packets */
3099 E1000_RCTL_BAM | /* RX All Bcast Pkts */
3100 E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */
Ben Greearcf955e62012-02-11 15:39:51 +00003101
Bruce Allane80bd1d2013-05-01 01:19:46 +00003102 rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */
3103 E1000_RCTL_DPF | /* Allow filtered pause */
3104 E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */
Ben Greearcf955e62012-02-11 15:39:51 +00003105 /* Do not mess with E1000_CTRL_VME, it affects transmit as well,
3106 * and that breaks VLANs.
3107 */
3108 }
3109
Auke Kokbc7f75f2007-09-17 12:30:59 -07003110 ew32(RCTL, rctl);
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003111 /* just started the receive unit, no need to restart */
Bruce Allan12d43f72012-12-05 06:26:14 +00003112 adapter->flags &= ~FLAG_RESTART_NOW;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003113}
3114
3115/**
3116 * e1000_configure_rx - Configure Receive Unit after Reset
3117 * @adapter: board private structure
3118 *
3119 * Configure the Rx unit of the MAC after a reset.
3120 **/
3121static void e1000_configure_rx(struct e1000_adapter *adapter)
3122{
3123 struct e1000_hw *hw = &adapter->hw;
3124 struct e1000_ring *rx_ring = adapter->rx_ring;
3125 u64 rdba;
3126 u32 rdlen, rctl, rxcsum, ctrl_ext;
3127
3128 if (adapter->rx_ps_pages) {
3129 /* this is a 32 byte descriptor */
3130 rdlen = rx_ring->count *
Bruce Allanaf667a22010-12-31 06:10:01 +00003131 sizeof(union e1000_rx_desc_packet_split);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003132 adapter->clean_rx = e1000_clean_rx_irq_ps;
3133 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07003134 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) {
Bruce Allan5f450212011-07-22 06:21:46 +00003135 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07003136 adapter->clean_rx = e1000_clean_jumbo_rx_irq;
3137 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003138 } else {
Bruce Allan5f450212011-07-22 06:21:46 +00003139 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003140 adapter->clean_rx = e1000_clean_rx_irq;
3141 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
3142 }
3143
3144 /* disable receives while setting up the descriptors */
3145 rctl = er32(RCTL);
David S. Miller823dcd22011-08-20 10:39:12 -07003146 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
3147 ew32(RCTL, rctl & ~E1000_RCTL_EN);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003148 e1e_flush();
Bruce Allan1bba4382011-03-19 00:27:20 +00003149 usleep_range(10000, 20000);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003150
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00003151 if (adapter->flags2 & FLAG2_DMA_BURST) {
Bruce Allane921eb12012-11-28 09:28:37 +00003152 /* set the writeback threshold (only takes effect if the RDTR
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00003153 * is set). set GRAN=1 and write back up to 0x4 worth, and
Bruce Allanaf667a22010-12-31 06:10:01 +00003154 * enable prefetching of 0x20 Rx descriptors
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00003155 * granularity = 01
3156 * wthresh = 04,
3157 * hthresh = 04,
3158 * pthresh = 0x20
3159 */
3160 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE);
3161 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE);
3162
Bruce Allane921eb12012-11-28 09:28:37 +00003163 /* override the delay timers for enabling bursting, only if
Jesse Brandeburg3a3b7582010-09-29 21:38:49 +00003164 * the value was not set by the user via module options
3165 */
3166 if (adapter->rx_int_delay == DEFAULT_RDTR)
3167 adapter->rx_int_delay = BURST_RDTR;
3168 if (adapter->rx_abs_int_delay == DEFAULT_RADV)
3169 adapter->rx_abs_int_delay = BURST_RADV;
3170 }
3171
Auke Kokbc7f75f2007-09-17 12:30:59 -07003172 /* set the Receive Delay Timer Register */
3173 ew32(RDTR, adapter->rx_int_delay);
3174
3175 /* irq moderation */
3176 ew32(RADV, adapter->rx_abs_int_delay);
Bruce Allan828bac82010-09-29 21:39:37 +00003177 if ((adapter->itr_setting != 0) && (adapter->itr != 0))
Matthew Vick22a4cca2012-07-12 00:02:42 +00003178 e1000e_write_itr(adapter, adapter->itr);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003179
3180 ctrl_ext = er32(CTRL_EXT);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003181 /* Auto-Mask interrupts upon ICR access */
3182 ctrl_ext |= E1000_CTRL_EXT_IAME;
3183 ew32(IAM, 0xffffffff);
3184 ew32(CTRL_EXT, ctrl_ext);
3185 e1e_flush();
3186
Bruce Allane921eb12012-11-28 09:28:37 +00003187 /* Setup the HW Rx Head and Tail Descriptor Pointers and
Bruce Allanad680762008-03-28 09:15:03 -07003188 * the Base and Length of the Rx Descriptor Ring
3189 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003190 rdba = rx_ring->dma;
Bruce Allan1e360522012-03-20 03:48:13 +00003191 ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32)));
3192 ew32(RDBAH(0), (rdba >> 32));
3193 ew32(RDLEN(0), rdlen);
3194 ew32(RDH(0), 0);
3195 ew32(RDT(0), 0);
3196 rx_ring->head = adapter->hw.hw_addr + E1000_RDH(0);
3197 rx_ring->tail = adapter->hw.hw_addr + E1000_RDT(0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003198
3199 /* Enable Receive Checksum Offload for TCP and UDP */
3200 rxcsum = er32(RXCSUM);
Bruce Allan2e1706f2012-06-30 20:02:42 +00003201 if (adapter->netdev->features & NETIF_F_RXCSUM)
Auke Kokbc7f75f2007-09-17 12:30:59 -07003202 rxcsum |= E1000_RXCSUM_TUOFL;
Bruce Allan2e1706f2012-06-30 20:02:42 +00003203 else
Auke Kokbc7f75f2007-09-17 12:30:59 -07003204 rxcsum &= ~E1000_RXCSUM_TUOFL;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003205 ew32(RXCSUM, rxcsum);
3206
Bruce Allan3e35d992013-01-12 07:25:22 +00003207 /* With jumbo frames, excessive C-state transition latencies result
3208 * in dropped transactions.
3209 */
3210 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3211 u32 lat =
3212 ((er32(PBA) & E1000_PBA_RXA_MASK) * 1024 -
3213 adapter->max_frame_size) * 8 / 1000;
3214
3215 if (adapter->flags & FLAG_IS_ICH) {
Bruce Allan53ec5492009-11-20 23:27:40 +00003216 u32 rxdctl = er32(RXDCTL(0));
3217 ew32(RXDCTL(0), rxdctl | 0x3);
Bruce Allan53ec5492009-11-20 23:27:40 +00003218 }
Bruce Allan3e35d992013-01-12 07:25:22 +00003219
3220 pm_qos_update_request(&adapter->netdev->pm_qos_req, lat);
3221 } else {
3222 pm_qos_update_request(&adapter->netdev->pm_qos_req,
3223 PM_QOS_DEFAULT_VALUE);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07003224 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07003225
3226 /* Enable Receives */
3227 ew32(RCTL, rctl);
3228}
3229
3230/**
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003231 * e1000e_write_mc_addr_list - write multicast addresses to MTA
Auke Kokbc7f75f2007-09-17 12:30:59 -07003232 * @netdev: network interface device structure
3233 *
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003234 * Writes multicast address list to the MTA hash table.
3235 * Returns: -ENOMEM on failure
3236 * 0 on no addresses written
3237 * X on writing X addresses to MTA
3238 */
3239static int e1000e_write_mc_addr_list(struct net_device *netdev)
Auke Kokbc7f75f2007-09-17 12:30:59 -07003240{
3241 struct e1000_adapter *adapter = netdev_priv(netdev);
3242 struct e1000_hw *hw = &adapter->hw;
Jiri Pirko22bedad32010-04-01 21:22:57 +00003243 struct netdev_hw_addr *ha;
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003244 u8 *mta_list;
3245 int i;
3246
3247 if (netdev_mc_empty(netdev)) {
3248 /* nothing to program, so clear mc list */
3249 hw->mac.ops.update_mc_addr_list(hw, NULL, 0);
3250 return 0;
3251 }
3252
3253 mta_list = kzalloc(netdev_mc_count(netdev) * ETH_ALEN, GFP_ATOMIC);
3254 if (!mta_list)
3255 return -ENOMEM;
3256
3257 /* update_mc_addr_list expects a packed array of only addresses. */
3258 i = 0;
3259 netdev_for_each_mc_addr(ha, netdev)
Bruce Allanf0ff4392013-02-20 04:05:39 +00003260 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN);
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003261
3262 hw->mac.ops.update_mc_addr_list(hw, mta_list, i);
3263 kfree(mta_list);
3264
3265 return netdev_mc_count(netdev);
3266}
3267
3268/**
3269 * e1000e_write_uc_addr_list - write unicast addresses to RAR table
3270 * @netdev: network interface device structure
3271 *
3272 * Writes unicast address list to the RAR table.
3273 * Returns: -ENOMEM on failure/insufficient address space
3274 * 0 on no addresses written
3275 * X on writing X addresses to the RAR table
3276 **/
3277static int e1000e_write_uc_addr_list(struct net_device *netdev)
3278{
3279 struct e1000_adapter *adapter = netdev_priv(netdev);
3280 struct e1000_hw *hw = &adapter->hw;
3281 unsigned int rar_entries = hw->mac.rar_entry_count;
3282 int count = 0;
3283
3284 /* save a rar entry for our hardware address */
3285 rar_entries--;
3286
3287 /* save a rar entry for the LAA workaround */
3288 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA)
3289 rar_entries--;
3290
3291 /* return ENOMEM indicating insufficient memory for addresses */
3292 if (netdev_uc_count(netdev) > rar_entries)
3293 return -ENOMEM;
3294
3295 if (!netdev_uc_empty(netdev) && rar_entries) {
3296 struct netdev_hw_addr *ha;
3297
Bruce Allane921eb12012-11-28 09:28:37 +00003298 /* write the addresses in reverse order to avoid write
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003299 * combining
3300 */
3301 netdev_for_each_uc_addr(ha, netdev) {
3302 if (!rar_entries)
3303 break;
Bruce Allan69e1e012012-04-14 03:28:50 +00003304 hw->mac.ops.rar_set(hw, ha->addr, rar_entries--);
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003305 count++;
3306 }
3307 }
3308
3309 /* zero out the remaining RAR entries not used above */
3310 for (; rar_entries > 0; rar_entries--) {
3311 ew32(RAH(rar_entries), 0);
3312 ew32(RAL(rar_entries), 0);
3313 }
3314 e1e_flush();
3315
3316 return count;
3317}
3318
3319/**
3320 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set
3321 * @netdev: network interface device structure
3322 *
3323 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast
3324 * address list or the network interface flags are updated. This routine is
3325 * responsible for configuring the hardware for proper unicast, multicast,
3326 * promiscuous mode, and all-multi behavior.
3327 **/
3328static void e1000e_set_rx_mode(struct net_device *netdev)
3329{
3330 struct e1000_adapter *adapter = netdev_priv(netdev);
3331 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003332 u32 rctl;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003333
3334 /* Check for Promiscuous and All Multicast modes */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003335 rctl = er32(RCTL);
3336
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003337 /* clear the affected bits */
3338 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
3339
Auke Kokbc7f75f2007-09-17 12:30:59 -07003340 if (netdev->flags & IFF_PROMISC) {
3341 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
Jeff Kirsher86d70e52011-03-25 16:01:01 +00003342 /* Do not hardware filter VLANs in promisc mode */
3343 e1000e_vlan_filter_disable(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003344 } else {
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003345 int count;
Bruce Allan3d3a1672012-02-23 03:13:18 +00003346
Patrick McHardy746b9f02008-07-16 20:15:45 -07003347 if (netdev->flags & IFF_ALLMULTI) {
3348 rctl |= E1000_RCTL_MPE;
Patrick McHardy746b9f02008-07-16 20:15:45 -07003349 } else {
Bruce Allane921eb12012-11-28 09:28:37 +00003350 /* Write addresses to the MTA, if the attempt fails
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003351 * then we should just turn on promiscuous mode so
3352 * that we can at least receive multicast traffic
3353 */
3354 count = e1000e_write_mc_addr_list(netdev);
3355 if (count < 0)
3356 rctl |= E1000_RCTL_MPE;
Patrick McHardy746b9f02008-07-16 20:15:45 -07003357 }
Jeff Kirsher86d70e52011-03-25 16:01:01 +00003358 e1000e_vlan_filter_enable(adapter);
Bruce Allane921eb12012-11-28 09:28:37 +00003359 /* Write addresses to available RAR registers, if there is not
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003360 * sufficient space to store all the addresses then enable
3361 * unicast promiscuous mode
3362 */
3363 count = e1000e_write_uc_addr_list(netdev);
3364 if (count < 0)
3365 rctl |= E1000_RCTL_UPE;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003366 }
3367
3368 ew32(RCTL, rctl);
3369
Patrick McHardyf6469682013-04-19 02:04:27 +00003370 if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX)
Jeff Kirsher86d70e52011-03-25 16:01:01 +00003371 e1000e_vlan_strip_enable(adapter);
3372 else
3373 e1000e_vlan_strip_disable(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003374}
3375
Bruce Allan70495a52012-01-11 01:26:50 +00003376static void e1000e_setup_rss_hash(struct e1000_adapter *adapter)
3377{
3378 struct e1000_hw *hw = &adapter->hw;
3379 u32 mrqc, rxcsum;
3380 int i;
3381 static const u32 rsskey[10] = {
3382 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0,
3383 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe
3384 };
3385
3386 /* Fill out hash function seed */
3387 for (i = 0; i < 10; i++)
3388 ew32(RSSRK(i), rsskey[i]);
3389
3390 /* Direct all traffic to queue 0 */
3391 for (i = 0; i < 32; i++)
3392 ew32(RETA(i), 0);
3393
Bruce Allane921eb12012-11-28 09:28:37 +00003394 /* Disable raw packet checksumming so that RSS hash is placed in
Bruce Allan70495a52012-01-11 01:26:50 +00003395 * descriptor on writeback.
3396 */
3397 rxcsum = er32(RXCSUM);
3398 rxcsum |= E1000_RXCSUM_PCSD;
3399
3400 ew32(RXCSUM, rxcsum);
3401
3402 mrqc = (E1000_MRQC_RSS_FIELD_IPV4 |
3403 E1000_MRQC_RSS_FIELD_IPV4_TCP |
3404 E1000_MRQC_RSS_FIELD_IPV6 |
3405 E1000_MRQC_RSS_FIELD_IPV6_TCP |
3406 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX);
3407
3408 ew32(MRQC, mrqc);
3409}
3410
Auke Kokbc7f75f2007-09-17 12:30:59 -07003411/**
Bruce Allanb67e1912012-12-27 08:32:33 +00003412 * e1000e_get_base_timinca - get default SYSTIM time increment attributes
3413 * @adapter: board private structure
3414 * @timinca: pointer to returned time increment attributes
3415 *
3416 * Get attributes for incrementing the System Time Register SYSTIML/H at
3417 * the default base frequency, and set the cyclecounter shift value.
3418 **/
Bruce Alland89777b2013-01-19 01:09:58 +00003419s32 e1000e_get_base_timinca(struct e1000_adapter *adapter, u32 *timinca)
Bruce Allanb67e1912012-12-27 08:32:33 +00003420{
3421 struct e1000_hw *hw = &adapter->hw;
3422 u32 incvalue, incperiod, shift;
3423
3424 /* Make sure clock is enabled on I217 before checking the frequency */
3425 if ((hw->mac.type == e1000_pch_lpt) &&
3426 !(er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_ENABLED) &&
3427 !(er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_ENABLED)) {
3428 u32 fextnvm7 = er32(FEXTNVM7);
3429
3430 if (!(fextnvm7 & (1 << 0))) {
3431 ew32(FEXTNVM7, fextnvm7 | (1 << 0));
3432 e1e_flush();
3433 }
3434 }
3435
3436 switch (hw->mac.type) {
3437 case e1000_pch2lan:
3438 case e1000_pch_lpt:
3439 /* On I217, the clock frequency is 25MHz or 96MHz as
3440 * indicated by the System Clock Frequency Indication
3441 */
3442 if ((hw->mac.type != e1000_pch_lpt) ||
3443 (er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_SYSCFI)) {
3444 /* Stable 96MHz frequency */
3445 incperiod = INCPERIOD_96MHz;
3446 incvalue = INCVALUE_96MHz;
3447 shift = INCVALUE_SHIFT_96MHz;
3448 adapter->cc.shift = shift + INCPERIOD_SHIFT_96MHz;
3449 break;
3450 }
3451 /* fall-through */
3452 case e1000_82574:
3453 case e1000_82583:
3454 /* Stable 25MHz frequency */
3455 incperiod = INCPERIOD_25MHz;
3456 incvalue = INCVALUE_25MHz;
3457 shift = INCVALUE_SHIFT_25MHz;
3458 adapter->cc.shift = shift;
3459 break;
3460 default:
3461 return -EINVAL;
3462 }
3463
3464 *timinca = ((incperiod << E1000_TIMINCA_INCPERIOD_SHIFT) |
3465 ((incvalue << shift) & E1000_TIMINCA_INCVALUE_MASK));
3466
3467 return 0;
3468}
3469
3470/**
3471 * e1000e_config_hwtstamp - configure the hwtstamp registers and enable/disable
3472 * @adapter: board private structure
3473 *
3474 * Outgoing time stamping can be enabled and disabled. Play nice and
3475 * disable it when requested, although it shouldn't cause any overhead
3476 * when no packet needs it. At most one packet in the queue may be
3477 * marked for time stamping, otherwise it would be impossible to tell
3478 * for sure to which packet the hardware time stamp belongs.
3479 *
3480 * Incoming time stamping has to be configured via the hardware filters.
3481 * Not all combinations are supported, in particular event type has to be
3482 * specified. Matching the kind of event packet is not supported, with the
3483 * exception of "all V2 events regardless of level 2 or 4".
3484 **/
3485static int e1000e_config_hwtstamp(struct e1000_adapter *adapter)
3486{
3487 struct e1000_hw *hw = &adapter->hw;
3488 struct hwtstamp_config *config = &adapter->hwtstamp_config;
3489 u32 tsync_tx_ctl = E1000_TSYNCTXCTL_ENABLED;
3490 u32 tsync_rx_ctl = E1000_TSYNCRXCTL_ENABLED;
Bruce Alland89777b2013-01-19 01:09:58 +00003491 u32 rxmtrl = 0;
3492 u16 rxudp = 0;
3493 bool is_l4 = false;
3494 bool is_l2 = false;
Bruce Allanb67e1912012-12-27 08:32:33 +00003495 u32 regval;
3496 s32 ret_val;
3497
3498 if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP))
3499 return -EINVAL;
3500
3501 /* flags reserved for future extensions - must be zero */
3502 if (config->flags)
3503 return -EINVAL;
3504
3505 switch (config->tx_type) {
3506 case HWTSTAMP_TX_OFF:
3507 tsync_tx_ctl = 0;
3508 break;
3509 case HWTSTAMP_TX_ON:
3510 break;
3511 default:
3512 return -ERANGE;
3513 }
3514
3515 switch (config->rx_filter) {
3516 case HWTSTAMP_FILTER_NONE:
3517 tsync_rx_ctl = 0;
3518 break;
Bruce Alland89777b2013-01-19 01:09:58 +00003519 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
3520 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1;
3521 rxmtrl = E1000_RXMTRL_PTP_V1_SYNC_MESSAGE;
3522 is_l4 = true;
3523 break;
3524 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
3525 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1;
3526 rxmtrl = E1000_RXMTRL_PTP_V1_DELAY_REQ_MESSAGE;
3527 is_l4 = true;
3528 break;
3529 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
3530 /* Also time stamps V2 L2 Path Delay Request/Response */
3531 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_V2;
3532 rxmtrl = E1000_RXMTRL_PTP_V2_SYNC_MESSAGE;
3533 is_l2 = true;
3534 break;
3535 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
3536 /* Also time stamps V2 L2 Path Delay Request/Response. */
3537 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_V2;
3538 rxmtrl = E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE;
3539 is_l2 = true;
3540 break;
3541 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
3542 /* Hardware cannot filter just V2 L4 Sync messages;
3543 * fall-through to V2 (both L2 and L4) Sync.
3544 */
3545 case HWTSTAMP_FILTER_PTP_V2_SYNC:
3546 /* Also time stamps V2 Path Delay Request/Response. */
3547 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2;
3548 rxmtrl = E1000_RXMTRL_PTP_V2_SYNC_MESSAGE;
3549 is_l2 = true;
3550 is_l4 = true;
3551 break;
3552 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
3553 /* Hardware cannot filter just V2 L4 Delay Request messages;
3554 * fall-through to V2 (both L2 and L4) Delay Request.
3555 */
3556 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
3557 /* Also time stamps V2 Path Delay Request/Response. */
3558 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2;
3559 rxmtrl = E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE;
3560 is_l2 = true;
3561 is_l4 = true;
3562 break;
3563 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
3564 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
3565 /* Hardware cannot filter just V2 L4 or L2 Event messages;
3566 * fall-through to all V2 (both L2 and L4) Events.
3567 */
3568 case HWTSTAMP_FILTER_PTP_V2_EVENT:
3569 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_EVENT_V2;
3570 config->rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
3571 is_l2 = true;
3572 is_l4 = true;
3573 break;
3574 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
3575 /* For V1, the hardware can only filter Sync messages or
3576 * Delay Request messages but not both so fall-through to
3577 * time stamp all packets.
3578 */
Bruce Allanb67e1912012-12-27 08:32:33 +00003579 case HWTSTAMP_FILTER_ALL:
Bruce Alland89777b2013-01-19 01:09:58 +00003580 is_l2 = true;
3581 is_l4 = true;
Bruce Allanb67e1912012-12-27 08:32:33 +00003582 tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_ALL;
3583 config->rx_filter = HWTSTAMP_FILTER_ALL;
3584 break;
3585 default:
3586 return -ERANGE;
3587 }
3588
3589 /* enable/disable Tx h/w time stamping */
3590 regval = er32(TSYNCTXCTL);
3591 regval &= ~E1000_TSYNCTXCTL_ENABLED;
3592 regval |= tsync_tx_ctl;
3593 ew32(TSYNCTXCTL, regval);
3594 if ((er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_ENABLED) !=
3595 (regval & E1000_TSYNCTXCTL_ENABLED)) {
3596 e_err("Timesync Tx Control register not set as expected\n");
3597 return -EAGAIN;
3598 }
3599
3600 /* enable/disable Rx h/w time stamping */
3601 regval = er32(TSYNCRXCTL);
3602 regval &= ~(E1000_TSYNCRXCTL_ENABLED | E1000_TSYNCRXCTL_TYPE_MASK);
3603 regval |= tsync_rx_ctl;
3604 ew32(TSYNCRXCTL, regval);
3605 if ((er32(TSYNCRXCTL) & (E1000_TSYNCRXCTL_ENABLED |
3606 E1000_TSYNCRXCTL_TYPE_MASK)) !=
3607 (regval & (E1000_TSYNCRXCTL_ENABLED |
3608 E1000_TSYNCRXCTL_TYPE_MASK))) {
3609 e_err("Timesync Rx Control register not set as expected\n");
3610 return -EAGAIN;
3611 }
3612
Bruce Alland89777b2013-01-19 01:09:58 +00003613 /* L2: define ethertype filter for time stamped packets */
3614 if (is_l2)
3615 rxmtrl |= ETH_P_1588;
3616
3617 /* define which PTP packets get time stamped */
3618 ew32(RXMTRL, rxmtrl);
3619
3620 /* Filter by destination port */
3621 if (is_l4) {
3622 rxudp = PTP_EV_PORT;
3623 cpu_to_be16s(&rxudp);
3624 }
3625 ew32(RXUDP, rxudp);
3626
3627 e1e_flush();
3628
Bruce Allanb67e1912012-12-27 08:32:33 +00003629 /* Clear TSYNCRXCTL_VALID & TSYNCTXCTL_VALID bit */
Bruce Allan70806a72013-01-05 05:08:37 +00003630 er32(RXSTMPH);
3631 er32(TXSTMPH);
Bruce Allanb67e1912012-12-27 08:32:33 +00003632
3633 /* Get and set the System Time Register SYSTIM base frequency */
3634 ret_val = e1000e_get_base_timinca(adapter, &regval);
3635 if (ret_val)
3636 return ret_val;
3637 ew32(TIMINCA, regval);
3638
3639 /* reset the ns time counter */
3640 timecounter_init(&adapter->tc, &adapter->cc,
3641 ktime_to_ns(ktime_get_real()));
3642
3643 return 0;
3644}
3645
3646/**
Bruce Allanad680762008-03-28 09:15:03 -07003647 * e1000_configure - configure the hardware for Rx and Tx
Auke Kokbc7f75f2007-09-17 12:30:59 -07003648 * @adapter: private board structure
3649 **/
3650static void e1000_configure(struct e1000_adapter *adapter)
3651{
Bruce Allan55aa6982011-12-16 00:45:45 +00003652 struct e1000_ring *rx_ring = adapter->rx_ring;
3653
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00003654 e1000e_set_rx_mode(adapter->netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003655
3656 e1000_restore_vlan(adapter);
Bruce Allancd791612010-05-10 14:59:51 +00003657 e1000_init_manageability_pt(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003658
3659 e1000_configure_tx(adapter);
Bruce Allan70495a52012-01-11 01:26:50 +00003660
3661 if (adapter->netdev->features & NETIF_F_RXHASH)
3662 e1000e_setup_rss_hash(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003663 e1000_setup_rctl(adapter);
3664 e1000_configure_rx(adapter);
Bruce Allan55aa6982011-12-16 00:45:45 +00003665 adapter->alloc_rx_buf(rx_ring, e1000_desc_unused(rx_ring), GFP_KERNEL);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003666}
3667
3668/**
3669 * e1000e_power_up_phy - restore link in case the phy was powered down
3670 * @adapter: address of board private structure
3671 *
3672 * The phy may be powered down to save power and turn off link when the
3673 * driver is unloaded and wake on lan is not enabled (among others)
3674 * *** this routine MUST be followed by a call to e1000e_reset ***
3675 **/
3676void e1000e_power_up_phy(struct e1000_adapter *adapter)
3677{
Bruce Allan17f208d2009-12-01 15:47:22 +00003678 if (adapter->hw.phy.ops.power_up)
3679 adapter->hw.phy.ops.power_up(&adapter->hw);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003680
3681 adapter->hw.mac.ops.setup_link(&adapter->hw);
3682}
3683
3684/**
3685 * e1000_power_down_phy - Power down the PHY
3686 *
Bruce Allan17f208d2009-12-01 15:47:22 +00003687 * Power down the PHY so no link is implied when interface is down.
3688 * The PHY cannot be powered down if management or WoL is active.
Auke Kokbc7f75f2007-09-17 12:30:59 -07003689 */
3690static void e1000_power_down_phy(struct e1000_adapter *adapter)
3691{
Auke Kokbc7f75f2007-09-17 12:30:59 -07003692 /* WoL is enabled */
Auke Kok23b66e22008-02-11 09:25:51 -08003693 if (adapter->wol)
Auke Kokbc7f75f2007-09-17 12:30:59 -07003694 return;
3695
Bruce Allan17f208d2009-12-01 15:47:22 +00003696 if (adapter->hw.phy.ops.power_down)
3697 adapter->hw.phy.ops.power_down(&adapter->hw);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003698}
3699
3700/**
3701 * e1000e_reset - bring the hardware into a known good state
3702 *
3703 * This function boots the hardware and enables some settings that
3704 * require a configuration cycle of the hardware - those cannot be
3705 * set/changed during runtime. After reset the device needs to be
Bruce Allanad680762008-03-28 09:15:03 -07003706 * properly configured for Rx, Tx etc.
Auke Kokbc7f75f2007-09-17 12:30:59 -07003707 */
3708void e1000e_reset(struct e1000_adapter *adapter)
3709{
3710 struct e1000_mac_info *mac = &adapter->hw.mac;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003711 struct e1000_fc_info *fc = &adapter->hw.fc;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003712 struct e1000_hw *hw = &adapter->hw;
3713 u32 tx_space, min_tx_space, min_rx_space;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003714 u32 pba = adapter->pba;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003715 u16 hwm;
3716
Bruce Allanad680762008-03-28 09:15:03 -07003717 /* reset Packet Buffer Allocation to default */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003718 ew32(PBA, pba);
Auke Kokdf762462007-10-25 13:57:53 -07003719
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003720 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
Bruce Allane921eb12012-11-28 09:28:37 +00003721 /* To maintain wire speed transmits, the Tx FIFO should be
Auke Kokbc7f75f2007-09-17 12:30:59 -07003722 * large enough to accommodate two full transmit packets,
3723 * rounded up to the next 1KB and expressed in KB. Likewise,
3724 * the Rx FIFO should be large enough to accommodate at least
3725 * one full receive packet and is similarly rounded up and
Bruce Allanad680762008-03-28 09:15:03 -07003726 * expressed in KB.
3727 */
Auke Kokdf762462007-10-25 13:57:53 -07003728 pba = er32(PBA);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003729 /* upper 16 bits has Tx packet buffer allocation size in KB */
Auke Kokdf762462007-10-25 13:57:53 -07003730 tx_space = pba >> 16;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003731 /* lower 16 bits has Rx packet buffer allocation size in KB */
Auke Kokdf762462007-10-25 13:57:53 -07003732 pba &= 0xffff;
Bruce Allane921eb12012-11-28 09:28:37 +00003733 /* the Tx fifo also stores 16 bytes of information about the Tx
Bruce Allanad680762008-03-28 09:15:03 -07003734 * but don't include ethernet FCS because hardware appends it
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003735 */
3736 min_tx_space = (adapter->max_frame_size +
Bruce Allane5fe2542013-02-20 04:06:27 +00003737 sizeof(struct e1000_tx_desc) - ETH_FCS_LEN) * 2;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003738 min_tx_space = ALIGN(min_tx_space, 1024);
3739 min_tx_space >>= 10;
3740 /* software strips receive CRC, so leave room for it */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003741 min_rx_space = adapter->max_frame_size;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003742 min_rx_space = ALIGN(min_rx_space, 1024);
3743 min_rx_space >>= 10;
3744
Bruce Allane921eb12012-11-28 09:28:37 +00003745 /* If current Tx allocation is less than the min Tx FIFO size,
Auke Kokbc7f75f2007-09-17 12:30:59 -07003746 * and the min Tx FIFO size is less than the current Rx FIFO
Bruce Allanad680762008-03-28 09:15:03 -07003747 * allocation, take space away from current Rx allocation
3748 */
Auke Kokdf762462007-10-25 13:57:53 -07003749 if ((tx_space < min_tx_space) &&
3750 ((min_tx_space - tx_space) < pba)) {
3751 pba -= min_tx_space - tx_space;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003752
Bruce Allane921eb12012-11-28 09:28:37 +00003753 /* if short on Rx space, Rx wins and must trump Tx
Bruce Allan419e5512012-08-17 06:18:02 +00003754 * adjustment
Bruce Allanad680762008-03-28 09:15:03 -07003755 */
Bruce Allan79d4e902011-12-16 00:46:27 +00003756 if (pba < min_rx_space)
Auke Kokdf762462007-10-25 13:57:53 -07003757 pba = min_rx_space;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003758 }
Auke Kokdf762462007-10-25 13:57:53 -07003759
3760 ew32(PBA, pba);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003761 }
3762
Bruce Allane921eb12012-11-28 09:28:37 +00003763 /* flow control settings
Bruce Allanad680762008-03-28 09:15:03 -07003764 *
Bruce Allan38eb3942009-11-19 12:34:20 +00003765 * The high water mark must be low enough to fit one full frame
Auke Kokbc7f75f2007-09-17 12:30:59 -07003766 * (or the size used for early receive) above it in the Rx FIFO.
3767 * Set it to the lower of:
3768 * - 90% of the Rx FIFO size, and
Bruce Allan38eb3942009-11-19 12:34:20 +00003769 * - the full Rx FIFO size minus one full frame
Bruce Allanad680762008-03-28 09:15:03 -07003770 */
Bruce Alland3738bb2010-06-16 13:27:28 +00003771 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME)
3772 fc->pause_time = 0xFFFF;
3773 else
3774 fc->pause_time = E1000_FC_PAUSE_TIME;
Bruce Allanb20caa82012-02-22 09:03:03 +00003775 fc->send_xon = true;
Bruce Alland3738bb2010-06-16 13:27:28 +00003776 fc->current_mode = fc->requested_mode;
3777
3778 switch (hw->mac.type) {
Bruce Allan79d4e902011-12-16 00:46:27 +00003779 case e1000_ich9lan:
3780 case e1000_ich10lan:
3781 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3782 pba = 14;
3783 ew32(PBA, pba);
3784 fc->high_water = 0x2800;
3785 fc->low_water = fc->high_water - 8;
3786 break;
3787 }
3788 /* fall-through */
Bruce Alland3738bb2010-06-16 13:27:28 +00003789 default:
Bruce Allan79d4e902011-12-16 00:46:27 +00003790 hwm = min(((pba << 10) * 9 / 10),
3791 ((pba << 10) - adapter->max_frame_size));
Bruce Alland3738bb2010-06-16 13:27:28 +00003792
Bruce Allane80bd1d2013-05-01 01:19:46 +00003793 fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */
Bruce Alland3738bb2010-06-16 13:27:28 +00003794 fc->low_water = fc->high_water - 8;
3795 break;
3796 case e1000_pchlan:
Bruce Allane921eb12012-11-28 09:28:37 +00003797 /* Workaround PCH LOM adapter hangs with certain network
Bruce Allan38eb3942009-11-19 12:34:20 +00003798 * loads. If hangs persist, try disabling Tx flow control.
3799 */
3800 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3801 fc->high_water = 0x3500;
Bruce Allane80bd1d2013-05-01 01:19:46 +00003802 fc->low_water = 0x1500;
Bruce Allan38eb3942009-11-19 12:34:20 +00003803 } else {
3804 fc->high_water = 0x5000;
Bruce Allane80bd1d2013-05-01 01:19:46 +00003805 fc->low_water = 0x3000;
Bruce Allan38eb3942009-11-19 12:34:20 +00003806 }
Bruce Allana3055952010-05-10 15:02:12 +00003807 fc->refresh_time = 0x1000;
Bruce Alland3738bb2010-06-16 13:27:28 +00003808 break;
3809 case e1000_pch2lan:
Bruce Allan2fbe4522012-04-19 03:21:47 +00003810 case e1000_pch_lpt:
Bruce Alland3738bb2010-06-16 13:27:28 +00003811 fc->refresh_time = 0x0400;
Bruce Allan347b5202012-12-08 00:35:35 +00003812
3813 if (adapter->netdev->mtu <= ETH_DATA_LEN) {
3814 fc->high_water = 0x05C20;
3815 fc->low_water = 0x05048;
3816 fc->pause_time = 0x0650;
3817 break;
Bruce Allan828bac82010-09-29 21:39:37 +00003818 }
Bruce Allan347b5202012-12-08 00:35:35 +00003819
Bruce Allance345e02013-06-21 09:07:07 +00003820 pba = 14;
3821 ew32(PBA, pba);
Bruce Allan347b5202012-12-08 00:35:35 +00003822 fc->high_water = ((pba << 10) * 9 / 10) & E1000_FCRTH_RTH;
3823 fc->low_water = ((pba << 10) * 8 / 10) & E1000_FCRTL_RTL;
Bruce Alland3738bb2010-06-16 13:27:28 +00003824 break;
Bruce Allan38eb3942009-11-19 12:34:20 +00003825 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07003826
Bruce Allane921eb12012-11-28 09:28:37 +00003827 /* Alignment of Tx data is on an arbitrary byte boundary with the
Bruce Alland821a4c2012-08-24 20:38:11 +00003828 * maximum size per Tx descriptor limited only to the transmit
3829 * allocation of the packet buffer minus 96 bytes with an upper
3830 * limit of 24KB due to receive synchronization limitations.
3831 */
3832 adapter->tx_fifo_limit = min_t(u32, ((er32(PBA) >> 16) << 10) - 96,
3833 24 << 10);
3834
Bruce Allane921eb12012-11-28 09:28:37 +00003835 /* Disable Adaptive Interrupt Moderation if 2 full packets cannot
Bruce Allan79d4e902011-12-16 00:46:27 +00003836 * fit in receive buffer.
Bruce Allan828bac82010-09-29 21:39:37 +00003837 */
3838 if (adapter->itr_setting & 0x3) {
Bruce Allan79d4e902011-12-16 00:46:27 +00003839 if ((adapter->max_frame_size * 2) > (pba << 10)) {
Bruce Allan828bac82010-09-29 21:39:37 +00003840 if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) {
3841 dev_info(&adapter->pdev->dev,
Bruce Allan17e813e2013-02-20 04:06:01 +00003842 "Interrupt Throttle Rate off\n");
Bruce Allan828bac82010-09-29 21:39:37 +00003843 adapter->flags2 |= FLAG2_DISABLE_AIM;
Matthew Vick22a4cca2012-07-12 00:02:42 +00003844 e1000e_write_itr(adapter, 0);
Bruce Allan828bac82010-09-29 21:39:37 +00003845 }
3846 } else if (adapter->flags2 & FLAG2_DISABLE_AIM) {
3847 dev_info(&adapter->pdev->dev,
Bruce Allan17e813e2013-02-20 04:06:01 +00003848 "Interrupt Throttle Rate on\n");
Bruce Allan828bac82010-09-29 21:39:37 +00003849 adapter->flags2 &= ~FLAG2_DISABLE_AIM;
3850 adapter->itr = 20000;
Matthew Vick22a4cca2012-07-12 00:02:42 +00003851 e1000e_write_itr(adapter, adapter->itr);
Bruce Allan828bac82010-09-29 21:39:37 +00003852 }
3853 }
3854
Auke Kokbc7f75f2007-09-17 12:30:59 -07003855 /* Allow time for pending master requests to run */
3856 mac->ops.reset_hw(hw);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07003857
Bruce Allane921eb12012-11-28 09:28:37 +00003858 /* For parts with AMT enabled, let the firmware know
Bruce Allan97ac8ca2008-04-29 09:16:05 -07003859 * that the network interface is in control
3860 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07003861 if (adapter->flags & FLAG_HAS_AMT)
Bruce Allan31dbe5b2011-01-06 14:29:52 +00003862 e1000e_get_hw_control(adapter);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07003863
Auke Kokbc7f75f2007-09-17 12:30:59 -07003864 ew32(WUC, 0);
3865
3866 if (mac->ops.init_hw(hw))
Jeff Kirsher44defeb2008-08-04 17:20:41 -07003867 e_err("Hardware Error\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07003868
3869 e1000_update_mng_vlan(adapter);
3870
3871 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3872 ew32(VET, ETH_P_8021Q);
3873
3874 e1000e_reset_adaptive(hw);
Bruce Allan31dbe5b2011-01-06 14:29:52 +00003875
Bruce Allanb67e1912012-12-27 08:32:33 +00003876 /* initialize systim and reset the ns time counter */
3877 e1000e_config_hwtstamp(adapter);
3878
Bruce Alland495bcb2013-03-20 07:23:11 +00003879 /* Set EEE advertisement as appropriate */
3880 if (adapter->flags2 & FLAG2_HAS_EEE) {
3881 s32 ret_val;
3882 u16 adv_addr;
3883
3884 switch (hw->phy.type) {
3885 case e1000_phy_82579:
3886 adv_addr = I82579_EEE_ADVERTISEMENT;
3887 break;
3888 case e1000_phy_i217:
3889 adv_addr = I217_EEE_ADVERTISEMENT;
3890 break;
3891 default:
3892 dev_err(&adapter->pdev->dev,
3893 "Invalid PHY type setting EEE advertisement\n");
3894 return;
3895 }
3896
3897 ret_val = hw->phy.ops.acquire(hw);
3898 if (ret_val) {
3899 dev_err(&adapter->pdev->dev,
3900 "EEE advertisement - unable to acquire PHY\n");
3901 return;
3902 }
3903
3904 e1000_write_emi_reg_locked(hw, adv_addr,
3905 hw->dev_spec.ich8lan.eee_disable ?
3906 0 : adapter->eee_advert);
3907
3908 hw->phy.ops.release(hw);
3909 }
3910
Bruce Allan31dbe5b2011-01-06 14:29:52 +00003911 if (!netif_running(adapter->netdev) &&
3912 !test_bit(__E1000_TESTING, &adapter->state)) {
3913 e1000_power_down_phy(adapter);
3914 return;
3915 }
3916
Auke Kokbc7f75f2007-09-17 12:30:59 -07003917 e1000_get_phy_info(hw);
3918
Bruce Allan918d7192009-06-02 11:28:20 +00003919 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) &&
3920 !(adapter->flags & FLAG_SMART_POWER_DOWN)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07003921 u16 phy_data = 0;
Bruce Allane921eb12012-11-28 09:28:37 +00003922 /* speed up time to link by disabling smart power down, ignore
Auke Kokbc7f75f2007-09-17 12:30:59 -07003923 * the return value of this function because there is nothing
Bruce Allanad680762008-03-28 09:15:03 -07003924 * different we would do if it failed
3925 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003926 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
3927 phy_data &= ~IGP02E1000_PM_SPD;
3928 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
3929 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07003930}
3931
3932int e1000e_up(struct e1000_adapter *adapter)
3933{
3934 struct e1000_hw *hw = &adapter->hw;
3935
3936 /* hardware has been reset, we need to reload some things */
3937 e1000_configure(adapter);
3938
3939 clear_bit(__E1000_DOWN, &adapter->state);
3940
Bruce Allan4662e822008-08-26 18:37:06 -07003941 if (adapter->msix_entries)
3942 e1000_configure_msix(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003943 e1000_irq_enable(adapter);
3944
Bruce Allan400484f2011-05-13 07:20:03 +00003945 netif_start_queue(adapter->netdev);
Jesse Brandeburg4cb9be72009-04-21 18:42:05 +00003946
Auke Kokbc7f75f2007-09-17 12:30:59 -07003947 /* fire a link change interrupt to start the watchdog */
Bruce Allan52a9b232010-05-10 15:00:10 +00003948 if (adapter->msix_entries)
3949 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
3950 else
3951 ew32(ICS, E1000_ICS_LSC);
3952
Auke Kokbc7f75f2007-09-17 12:30:59 -07003953 return 0;
3954}
3955
Jesse Brandeburg713b3c92011-02-02 10:19:50 +00003956static void e1000e_flush_descriptors(struct e1000_adapter *adapter)
3957{
3958 struct e1000_hw *hw = &adapter->hw;
3959
3960 if (!(adapter->flags2 & FLAG2_DMA_BURST))
3961 return;
3962
3963 /* flush pending descriptor writebacks to memory */
3964 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
3965 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
3966
3967 /* execute the writes immediately */
3968 e1e_flush();
Matthew Vickbf030852012-03-16 09:03:00 +00003969
Bruce Allane921eb12012-11-28 09:28:37 +00003970 /* due to rare timing issues, write to TIDV/RDTR again to ensure the
Matthew Vickbf030852012-03-16 09:03:00 +00003971 * write is successful
3972 */
3973 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
3974 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
3975
3976 /* execute the writes immediately */
3977 e1e_flush();
Jesse Brandeburg713b3c92011-02-02 10:19:50 +00003978}
3979
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00003980static void e1000e_update_stats(struct e1000_adapter *adapter);
3981
Auke Kokbc7f75f2007-09-17 12:30:59 -07003982void e1000e_down(struct e1000_adapter *adapter)
3983{
3984 struct net_device *netdev = adapter->netdev;
3985 struct e1000_hw *hw = &adapter->hw;
3986 u32 tctl, rctl;
3987
Bruce Allane921eb12012-11-28 09:28:37 +00003988 /* signal that we're down so the interrupt handler does not
Bruce Allanad680762008-03-28 09:15:03 -07003989 * reschedule our watchdog timer
3990 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003991 set_bit(__E1000_DOWN, &adapter->state);
3992
3993 /* disable receives in the hardware */
3994 rctl = er32(RCTL);
David S. Miller823dcd22011-08-20 10:39:12 -07003995 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
3996 ew32(RCTL, rctl & ~E1000_RCTL_EN);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003997 /* flush and sleep below */
3998
Jesse Brandeburg4cb9be72009-04-21 18:42:05 +00003999 netif_stop_queue(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004000
4001 /* disable transmits in the hardware */
4002 tctl = er32(TCTL);
4003 tctl &= ~E1000_TCTL_EN;
4004 ew32(TCTL, tctl);
David S. Miller823dcd22011-08-20 10:39:12 -07004005
Auke Kokbc7f75f2007-09-17 12:30:59 -07004006 /* flush both disables and wait for them to finish */
4007 e1e_flush();
Bruce Allan1bba4382011-03-19 00:27:20 +00004008 usleep_range(10000, 20000);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004009
Auke Kokbc7f75f2007-09-17 12:30:59 -07004010 e1000_irq_disable(adapter);
4011
Bruce Allana3b87a42013-04-20 05:37:29 +00004012 napi_synchronize(&adapter->napi);
4013
Auke Kokbc7f75f2007-09-17 12:30:59 -07004014 del_timer_sync(&adapter->watchdog_timer);
4015 del_timer_sync(&adapter->phy_info_timer);
4016
Auke Kokbc7f75f2007-09-17 12:30:59 -07004017 netif_carrier_off(netdev);
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00004018
4019 spin_lock(&adapter->stats64_lock);
4020 e1000e_update_stats(adapter);
4021 spin_unlock(&adapter->stats64_lock);
4022
Bruce Allan400484f2011-05-13 07:20:03 +00004023 e1000e_flush_descriptors(adapter);
Bruce Allan55aa6982011-12-16 00:45:45 +00004024 e1000_clean_tx_ring(adapter->tx_ring);
4025 e1000_clean_rx_ring(adapter->rx_ring);
Bruce Allan400484f2011-05-13 07:20:03 +00004026
Auke Kokbc7f75f2007-09-17 12:30:59 -07004027 adapter->link_speed = 0;
4028 adapter->link_duplex = 0;
4029
Bruce Allanda1e2042013-06-21 09:07:02 +00004030 /* Disable Si errata workaround on PCHx for jumbo frame flow */
4031 if ((hw->mac.type >= e1000_pch2lan) &&
4032 (adapter->netdev->mtu > ETH_DATA_LEN) &&
4033 e1000_lv_jumbo_workaround_ich8lan(hw, false))
4034 e_dbg("failed to disable jumbo frame workaround mode\n");
4035
Jeff Kirsher52cc3082008-06-24 17:01:29 -07004036 if (!pci_channel_offline(adapter->pdev))
4037 e1000e_reset(adapter);
Jesse Brandeburg713b3c92011-02-02 10:19:50 +00004038
Bruce Allane921eb12012-11-28 09:28:37 +00004039 /* TODO: for power management, we could drop the link and
Auke Kokbc7f75f2007-09-17 12:30:59 -07004040 * pci_disable_device here.
4041 */
4042}
4043
4044void e1000e_reinit_locked(struct e1000_adapter *adapter)
4045{
4046 might_sleep();
4047 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
Bruce Allan1bba4382011-03-19 00:27:20 +00004048 usleep_range(1000, 2000);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004049 e1000e_down(adapter);
4050 e1000e_up(adapter);
4051 clear_bit(__E1000_RESETTING, &adapter->state);
4052}
4053
4054/**
Bruce Allanb67e1912012-12-27 08:32:33 +00004055 * e1000e_cyclecounter_read - read raw cycle counter (used by time counter)
4056 * @cc: cyclecounter structure
4057 **/
4058static cycle_t e1000e_cyclecounter_read(const struct cyclecounter *cc)
4059{
4060 struct e1000_adapter *adapter = container_of(cc, struct e1000_adapter,
4061 cc);
4062 struct e1000_hw *hw = &adapter->hw;
4063 cycle_t systim;
4064
4065 /* latch SYSTIMH on read of SYSTIML */
4066 systim = (cycle_t)er32(SYSTIML);
4067 systim |= (cycle_t)er32(SYSTIMH) << 32;
4068
4069 return systim;
4070}
4071
4072/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07004073 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
4074 * @adapter: board private structure to initialize
4075 *
4076 * e1000_sw_init initializes the Adapter private data structure.
4077 * Fields are initialized based on PCI device information and
4078 * OS network device settings (MTU size).
4079 **/
Bill Pemberton9f9a12f2012-12-03 09:24:25 -05004080static int e1000_sw_init(struct e1000_adapter *adapter)
Auke Kokbc7f75f2007-09-17 12:30:59 -07004081{
Auke Kokbc7f75f2007-09-17 12:30:59 -07004082 struct net_device *netdev = adapter->netdev;
4083
4084 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
4085 adapter->rx_ps_bsize0 = 128;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004086 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
4087 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
Bruce Allan55aa6982011-12-16 00:45:45 +00004088 adapter->tx_ring_count = E1000_DEFAULT_TXD;
4089 adapter->rx_ring_count = E1000_DEFAULT_RXD;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004090
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00004091 spin_lock_init(&adapter->stats64_lock);
4092
Bruce Allan4662e822008-08-26 18:37:06 -07004093 e1000e_set_interrupt_capability(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004094
Bruce Allan4662e822008-08-26 18:37:06 -07004095 if (e1000_alloc_queues(adapter))
4096 return -ENOMEM;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004097
Bruce Allanb67e1912012-12-27 08:32:33 +00004098 /* Setup hardware time stamping cyclecounter */
4099 if (adapter->flags & FLAG_HAS_HW_TIMESTAMP) {
4100 adapter->cc.read = e1000e_cyclecounter_read;
4101 adapter->cc.mask = CLOCKSOURCE_MASK(64);
4102 adapter->cc.mult = 1;
4103 /* cc.shift set in e1000e_get_base_tininca() */
4104
4105 spin_lock_init(&adapter->systim_lock);
4106 INIT_WORK(&adapter->tx_hwtstamp_work, e1000e_tx_hwtstamp_work);
4107 }
4108
Auke Kokbc7f75f2007-09-17 12:30:59 -07004109 /* Explicitly disable IRQ since the NIC can be in any state. */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004110 e1000_irq_disable(adapter);
4111
Auke Kokbc7f75f2007-09-17 12:30:59 -07004112 set_bit(__E1000_DOWN, &adapter->state);
4113 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004114}
4115
4116/**
Bruce Allanf8d59f72008-08-08 18:36:11 -07004117 * e1000_intr_msi_test - Interrupt Handler
4118 * @irq: interrupt number
4119 * @data: pointer to a network interface device structure
4120 **/
Bruce Allan8bb62862013-01-16 08:46:49 +00004121static irqreturn_t e1000_intr_msi_test(int __always_unused irq, void *data)
Bruce Allanf8d59f72008-08-08 18:36:11 -07004122{
4123 struct net_device *netdev = data;
4124 struct e1000_adapter *adapter = netdev_priv(netdev);
4125 struct e1000_hw *hw = &adapter->hw;
4126 u32 icr = er32(ICR);
4127
Bruce Allan3bb99fe2009-11-20 23:25:07 +00004128 e_dbg("icr is %08X\n", icr);
Bruce Allanf8d59f72008-08-08 18:36:11 -07004129 if (icr & E1000_ICR_RXSEQ) {
4130 adapter->flags &= ~FLAG_MSI_TEST_FAILED;
Bruce Allane921eb12012-11-28 09:28:37 +00004131 /* Force memory writes to complete before acknowledging the
Bruce Allanbc763292012-08-17 06:18:07 +00004132 * interrupt is handled.
4133 */
Bruce Allanf8d59f72008-08-08 18:36:11 -07004134 wmb();
4135 }
4136
4137 return IRQ_HANDLED;
4138}
4139
4140/**
4141 * e1000_test_msi_interrupt - Returns 0 for successful test
4142 * @adapter: board private struct
4143 *
4144 * code flow taken from tg3.c
4145 **/
4146static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
4147{
4148 struct net_device *netdev = adapter->netdev;
4149 struct e1000_hw *hw = &adapter->hw;
4150 int err;
4151
4152 /* poll_enable hasn't been called yet, so don't need disable */
4153 /* clear any pending events */
4154 er32(ICR);
4155
4156 /* free the real vector and request a test handler */
4157 e1000_free_irq(adapter);
Bruce Allan4662e822008-08-26 18:37:06 -07004158 e1000e_reset_interrupt_capability(adapter);
Bruce Allanf8d59f72008-08-08 18:36:11 -07004159
4160 /* Assume that the test fails, if it succeeds then the test
Bruce Allane921eb12012-11-28 09:28:37 +00004161 * MSI irq handler will unset this flag
4162 */
Bruce Allanf8d59f72008-08-08 18:36:11 -07004163 adapter->flags |= FLAG_MSI_TEST_FAILED;
4164
4165 err = pci_enable_msi(adapter->pdev);
4166 if (err)
4167 goto msi_test_failed;
4168
Joe Perchesa0607fd2009-11-18 23:29:17 -08004169 err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0,
Bruce Allanf8d59f72008-08-08 18:36:11 -07004170 netdev->name, netdev);
4171 if (err) {
4172 pci_disable_msi(adapter->pdev);
4173 goto msi_test_failed;
4174 }
4175
Bruce Allane921eb12012-11-28 09:28:37 +00004176 /* Force memory writes to complete before enabling and firing an
Bruce Allanbc763292012-08-17 06:18:07 +00004177 * interrupt.
4178 */
Bruce Allanf8d59f72008-08-08 18:36:11 -07004179 wmb();
4180
4181 e1000_irq_enable(adapter);
4182
4183 /* fire an unusual interrupt on the test handler */
4184 ew32(ICS, E1000_ICS_RXSEQ);
4185 e1e_flush();
Prasanna S Panchamukhi569a3af2012-04-19 17:01:00 +00004186 msleep(100);
Bruce Allanf8d59f72008-08-08 18:36:11 -07004187
4188 e1000_irq_disable(adapter);
4189
Bruce Allanbc763292012-08-17 06:18:07 +00004190 rmb(); /* read flags after interrupt has been fired */
Bruce Allanf8d59f72008-08-08 18:36:11 -07004191
4192 if (adapter->flags & FLAG_MSI_TEST_FAILED) {
Bruce Allan4662e822008-08-26 18:37:06 -07004193 adapter->int_mode = E1000E_INT_MODE_LEGACY;
Jean Delvare068e8a32010-09-12 22:45:39 +00004194 e_info("MSI interrupt test failed, using legacy interrupt.\n");
Bruce Allan24b706b2012-01-31 06:37:22 +00004195 } else {
Jean Delvare068e8a32010-09-12 22:45:39 +00004196 e_dbg("MSI interrupt test succeeded!\n");
Bruce Allan24b706b2012-01-31 06:37:22 +00004197 }
Bruce Allanf8d59f72008-08-08 18:36:11 -07004198
4199 free_irq(adapter->pdev->irq, netdev);
4200 pci_disable_msi(adapter->pdev);
4201
Bruce Allanf8d59f72008-08-08 18:36:11 -07004202msi_test_failed:
Bruce Allan4662e822008-08-26 18:37:06 -07004203 e1000e_set_interrupt_capability(adapter);
Jean Delvare068e8a32010-09-12 22:45:39 +00004204 return e1000_request_irq(adapter);
Bruce Allanf8d59f72008-08-08 18:36:11 -07004205}
4206
4207/**
4208 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
4209 * @adapter: board private struct
4210 *
4211 * code flow taken from tg3.c, called with e1000 interrupts disabled.
4212 **/
4213static int e1000_test_msi(struct e1000_adapter *adapter)
4214{
4215 int err;
4216 u16 pci_cmd;
4217
4218 if (!(adapter->flags & FLAG_MSI_ENABLED))
4219 return 0;
4220
4221 /* disable SERR in case the MSI write causes a master abort */
4222 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
Dean Nelson36f24072010-06-29 18:12:05 +00004223 if (pci_cmd & PCI_COMMAND_SERR)
4224 pci_write_config_word(adapter->pdev, PCI_COMMAND,
4225 pci_cmd & ~PCI_COMMAND_SERR);
Bruce Allanf8d59f72008-08-08 18:36:11 -07004226
4227 err = e1000_test_msi_interrupt(adapter);
4228
Dean Nelson36f24072010-06-29 18:12:05 +00004229 /* re-enable SERR */
4230 if (pci_cmd & PCI_COMMAND_SERR) {
4231 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
4232 pci_cmd |= PCI_COMMAND_SERR;
4233 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);
4234 }
Bruce Allanf8d59f72008-08-08 18:36:11 -07004235
Bruce Allanf8d59f72008-08-08 18:36:11 -07004236 return err;
4237}
4238
4239/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07004240 * e1000_open - Called when a network interface is made active
4241 * @netdev: network interface device structure
4242 *
4243 * Returns 0 on success, negative value on failure
4244 *
4245 * The open entry point is called when a network interface is made
4246 * active by the system (IFF_UP). At this point all resources needed
4247 * for transmit and receive operations are allocated, the interrupt
4248 * handler is registered with the OS, the watchdog timer is started,
4249 * and the stack is notified that the interface is ready.
4250 **/
4251static int e1000_open(struct net_device *netdev)
4252{
4253 struct e1000_adapter *adapter = netdev_priv(netdev);
4254 struct e1000_hw *hw = &adapter->hw;
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004255 struct pci_dev *pdev = adapter->pdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004256 int err;
4257
4258 /* disallow open during test */
4259 if (test_bit(__E1000_TESTING, &adapter->state))
4260 return -EBUSY;
4261
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004262 pm_runtime_get_sync(&pdev->dev);
4263
Jesse Brandeburg9c563d22009-04-17 20:44:34 +00004264 netif_carrier_off(netdev);
4265
Auke Kokbc7f75f2007-09-17 12:30:59 -07004266 /* allocate transmit descriptors */
Bruce Allan55aa6982011-12-16 00:45:45 +00004267 err = e1000e_setup_tx_resources(adapter->tx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004268 if (err)
4269 goto err_setup_tx;
4270
4271 /* allocate receive descriptors */
Bruce Allan55aa6982011-12-16 00:45:45 +00004272 err = e1000e_setup_rx_resources(adapter->rx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004273 if (err)
4274 goto err_setup_rx;
4275
Bruce Allane921eb12012-11-28 09:28:37 +00004276 /* If AMT is enabled, let the firmware know that the network
Bruce Allan11b08be2010-05-10 14:59:31 +00004277 * interface is now open and reset the part to a known state.
4278 */
4279 if (adapter->flags & FLAG_HAS_AMT) {
Bruce Allan31dbe5b2011-01-06 14:29:52 +00004280 e1000e_get_hw_control(adapter);
Bruce Allan11b08be2010-05-10 14:59:31 +00004281 e1000e_reset(adapter);
4282 }
4283
Auke Kokbc7f75f2007-09-17 12:30:59 -07004284 e1000e_power_up_phy(adapter);
4285
4286 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
Bruce Allane5fe2542013-02-20 04:06:27 +00004287 if ((adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
Auke Kokbc7f75f2007-09-17 12:30:59 -07004288 e1000_update_mng_vlan(adapter);
4289
Bruce Allan79d4e902011-12-16 00:46:27 +00004290 /* DMA latency requirement to workaround jumbo issue */
Bruce Allan3e35d992013-01-12 07:25:22 +00004291 pm_qos_add_request(&adapter->netdev->pm_qos_req, PM_QOS_CPU_DMA_LATENCY,
4292 PM_QOS_DEFAULT_VALUE);
Florian Micklerc128ec22010-08-02 14:27:00 +00004293
Bruce Allane921eb12012-11-28 09:28:37 +00004294 /* before we allocate an interrupt, we must be ready to handle it.
Auke Kokbc7f75f2007-09-17 12:30:59 -07004295 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
4296 * as soon as we call pci_request_irq, so we have to setup our
Bruce Allanad680762008-03-28 09:15:03 -07004297 * clean_rx handler before we do so.
4298 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004299 e1000_configure(adapter);
4300
4301 err = e1000_request_irq(adapter);
4302 if (err)
4303 goto err_req_irq;
4304
Bruce Allane921eb12012-11-28 09:28:37 +00004305 /* Work around PCIe errata with MSI interrupts causing some chipsets to
Bruce Allanf8d59f72008-08-08 18:36:11 -07004306 * ignore e1000e MSI messages, which means we need to test our MSI
4307 * interrupt now
4308 */
Bruce Allan4662e822008-08-26 18:37:06 -07004309 if (adapter->int_mode != E1000E_INT_MODE_LEGACY) {
Bruce Allanf8d59f72008-08-08 18:36:11 -07004310 err = e1000_test_msi(adapter);
4311 if (err) {
4312 e_err("Interrupt allocation failed\n");
4313 goto err_req_irq;
4314 }
4315 }
4316
Auke Kokbc7f75f2007-09-17 12:30:59 -07004317 /* From here on the code is the same as e1000e_up() */
4318 clear_bit(__E1000_DOWN, &adapter->state);
4319
4320 napi_enable(&adapter->napi);
4321
4322 e1000_irq_enable(adapter);
4323
Jeff Kirsher09357b02011-11-18 14:25:00 +00004324 adapter->tx_hang_recheck = false;
Jesse Brandeburg4cb9be72009-04-21 18:42:05 +00004325 netif_start_queue(netdev);
Jeff Kirsherd55b53f2008-07-18 04:33:03 -07004326
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004327 adapter->idle_check = true;
Konstantin Khlebnikov66148ba2013-03-05 09:43:04 +00004328 hw->mac.get_link_status = true;
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004329 pm_runtime_put(&pdev->dev);
4330
Auke Kokbc7f75f2007-09-17 12:30:59 -07004331 /* fire a link status change interrupt to start the watchdog */
Bruce Allan52a9b232010-05-10 15:00:10 +00004332 if (adapter->msix_entries)
4333 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
4334 else
4335 ew32(ICS, E1000_ICS_LSC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004336
4337 return 0;
4338
4339err_req_irq:
Bruce Allan31dbe5b2011-01-06 14:29:52 +00004340 e1000e_release_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004341 e1000_power_down_phy(adapter);
Bruce Allan55aa6982011-12-16 00:45:45 +00004342 e1000e_free_rx_resources(adapter->rx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004343err_setup_rx:
Bruce Allan55aa6982011-12-16 00:45:45 +00004344 e1000e_free_tx_resources(adapter->tx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004345err_setup_tx:
4346 e1000e_reset(adapter);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004347 pm_runtime_put_sync(&pdev->dev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004348
4349 return err;
4350}
4351
4352/**
4353 * e1000_close - Disables a network interface
4354 * @netdev: network interface device structure
4355 *
4356 * Returns 0, this is not allowed to fail
4357 *
4358 * The close entry point is called when an interface is de-activated
4359 * by the OS. The hardware is still under the drivers control, but
4360 * needs to be disabled. A global MAC reset is issued to stop the
4361 * hardware, and all transmit and receive resources are freed.
4362 **/
4363static int e1000_close(struct net_device *netdev)
4364{
4365 struct e1000_adapter *adapter = netdev_priv(netdev);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004366 struct pci_dev *pdev = adapter->pdev;
Bruce Allanbb9e44d2012-03-21 00:39:12 +00004367 int count = E1000_CHECK_RESET_COUNT;
4368
4369 while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
4370 usleep_range(10000, 20000);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004371
4372 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004373
4374 pm_runtime_get_sync(&pdev->dev);
4375
4376 if (!test_bit(__E1000_DOWN, &adapter->state)) {
4377 e1000e_down(adapter);
4378 e1000_free_irq(adapter);
4379 }
Bruce Allana3b87a42013-04-20 05:37:29 +00004380
4381 napi_disable(&adapter->napi);
4382
Auke Kokbc7f75f2007-09-17 12:30:59 -07004383 e1000_power_down_phy(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004384
Bruce Allan55aa6982011-12-16 00:45:45 +00004385 e1000e_free_tx_resources(adapter->tx_ring);
4386 e1000e_free_rx_resources(adapter->rx_ring);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004387
Bruce Allane921eb12012-11-28 09:28:37 +00004388 /* kill manageability vlan ID if supported, but not if a vlan with
Bruce Allanad680762008-03-28 09:15:03 -07004389 * the same ID is registered on the host OS (let 8021q kill it)
4390 */
Bruce Allane5fe2542013-02-20 04:06:27 +00004391 if (adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN)
Patrick McHardy80d5c362013-04-19 02:04:28 +00004392 e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q),
4393 adapter->mng_vlan_id);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004394
Bruce Allane921eb12012-11-28 09:28:37 +00004395 /* If AMT is enabled, let the firmware know that the network
Bruce Allanad680762008-03-28 09:15:03 -07004396 * interface is now closed
4397 */
Bruce Allan31dbe5b2011-01-06 14:29:52 +00004398 if ((adapter->flags & FLAG_HAS_AMT) &&
4399 !test_bit(__E1000_TESTING, &adapter->state))
4400 e1000e_release_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004401
Bruce Allan3e35d992013-01-12 07:25:22 +00004402 pm_qos_remove_request(&adapter->netdev->pm_qos_req);
Florian Micklerc128ec22010-08-02 14:27:00 +00004403
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004404 pm_runtime_put_sync(&pdev->dev);
4405
Auke Kokbc7f75f2007-09-17 12:30:59 -07004406 return 0;
4407}
Bruce Allanfc830b72013-02-20 04:06:11 +00004408
Auke Kokbc7f75f2007-09-17 12:30:59 -07004409/**
4410 * e1000_set_mac - Change the Ethernet Address of the NIC
4411 * @netdev: network interface device structure
4412 * @p: pointer to an address structure
4413 *
4414 * Returns 0 on success, negative on failure
4415 **/
4416static int e1000_set_mac(struct net_device *netdev, void *p)
4417{
4418 struct e1000_adapter *adapter = netdev_priv(netdev);
Bruce Allan69e1e012012-04-14 03:28:50 +00004419 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004420 struct sockaddr *addr = p;
4421
4422 if (!is_valid_ether_addr(addr->sa_data))
4423 return -EADDRNOTAVAIL;
4424
4425 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
4426 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
4427
Bruce Allan69e1e012012-04-14 03:28:50 +00004428 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004429
4430 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) {
4431 /* activate the work around */
4432 e1000e_set_laa_state_82571(&adapter->hw, 1);
4433
Bruce Allane921eb12012-11-28 09:28:37 +00004434 /* Hold a copy of the LAA in RAR[14] This is done so that
Auke Kokbc7f75f2007-09-17 12:30:59 -07004435 * between the time RAR[0] gets clobbered and the time it
4436 * gets fixed (in e1000_watchdog), the actual LAA is in one
4437 * of the RARs and no incoming packets directed to this port
4438 * are dropped. Eventually the LAA will be in RAR[0] and
Bruce Allanad680762008-03-28 09:15:03 -07004439 * RAR[14]
4440 */
Bruce Allan69e1e012012-04-14 03:28:50 +00004441 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr,
4442 adapter->hw.mac.rar_entry_count - 1);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004443 }
4444
4445 return 0;
4446}
4447
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07004448/**
4449 * e1000e_update_phy_task - work thread to update phy
4450 * @work: pointer to our work struct
4451 *
4452 * this worker thread exists because we must acquire a
4453 * semaphore to read the phy, which we could msleep while
4454 * waiting for it, and we can't msleep in a timer.
4455 **/
4456static void e1000e_update_phy_task(struct work_struct *work)
4457{
4458 struct e1000_adapter *adapter = container_of(work,
Bruce Allan17e813e2013-02-20 04:06:01 +00004459 struct e1000_adapter,
4460 update_phy_task);
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00004461
4462 if (test_bit(__E1000_DOWN, &adapter->state))
4463 return;
4464
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07004465 e1000_get_phy_info(&adapter->hw);
4466}
4467
Bruce Allane921eb12012-11-28 09:28:37 +00004468/**
4469 * e1000_update_phy_info - timre call-back to update PHY info
4470 * @data: pointer to adapter cast into an unsigned long
4471 *
Bruce Allanad680762008-03-28 09:15:03 -07004472 * Need to wait a few seconds after link up to get diagnostic information from
4473 * the phy
Bruce Allane921eb12012-11-28 09:28:37 +00004474 **/
Auke Kokbc7f75f2007-09-17 12:30:59 -07004475static void e1000_update_phy_info(unsigned long data)
4476{
Bruce Allan53aa82d2013-02-20 04:06:06 +00004477 struct e1000_adapter *adapter = (struct e1000_adapter *)data;
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00004478
4479 if (test_bit(__E1000_DOWN, &adapter->state))
4480 return;
4481
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07004482 schedule_work(&adapter->update_phy_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004483}
4484
4485/**
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004486 * e1000e_update_phy_stats - Update the PHY statistics counters
4487 * @adapter: board private structure
Bruce Allan2b6b1682011-05-13 07:20:09 +00004488 *
4489 * Read/clear the upper 16-bit PHY registers and read/accumulate lower
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004490 **/
4491static void e1000e_update_phy_stats(struct e1000_adapter *adapter)
4492{
4493 struct e1000_hw *hw = &adapter->hw;
4494 s32 ret_val;
4495 u16 phy_data;
4496
4497 ret_val = hw->phy.ops.acquire(hw);
4498 if (ret_val)
4499 return;
4500
Bruce Allane921eb12012-11-28 09:28:37 +00004501 /* A page set is expensive so check if already on desired page.
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004502 * If not, set to the page with the PHY status registers.
4503 */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004504 hw->phy.addr = 1;
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004505 ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
4506 &phy_data);
4507 if (ret_val)
4508 goto release;
Bruce Allan2b6b1682011-05-13 07:20:09 +00004509 if (phy_data != (HV_STATS_PAGE << IGP_PAGE_SHIFT)) {
4510 ret_val = hw->phy.ops.set_page(hw,
4511 HV_STATS_PAGE << IGP_PAGE_SHIFT);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004512 if (ret_val)
4513 goto release;
4514 }
4515
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004516 /* Single Collision Count */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004517 hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data);
4518 ret_val = hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004519 if (!ret_val)
4520 adapter->stats.scc += phy_data;
4521
4522 /* Excessive Collision Count */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004523 hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data);
4524 ret_val = hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004525 if (!ret_val)
4526 adapter->stats.ecol += phy_data;
4527
4528 /* Multiple Collision Count */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004529 hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data);
4530 ret_val = hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004531 if (!ret_val)
4532 adapter->stats.mcc += phy_data;
4533
4534 /* Late Collision Count */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004535 hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data);
4536 ret_val = hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004537 if (!ret_val)
4538 adapter->stats.latecol += phy_data;
4539
4540 /* Collision Count - also used for adaptive IFS */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004541 hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data);
4542 ret_val = hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004543 if (!ret_val)
4544 hw->mac.collision_delta = phy_data;
4545
4546 /* Defer Count */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004547 hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data);
4548 ret_val = hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004549 if (!ret_val)
4550 adapter->stats.dc += phy_data;
4551
4552 /* Transmit with no CRS */
Bruce Allan2b6b1682011-05-13 07:20:09 +00004553 hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data);
4554 ret_val = hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data);
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004555 if (!ret_val)
4556 adapter->stats.tncrs += phy_data;
4557
4558release:
4559 hw->phy.ops.release(hw);
4560}
4561
4562/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07004563 * e1000e_update_stats - Update the board statistics counters
4564 * @adapter: board private structure
4565 **/
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00004566static void e1000e_update_stats(struct e1000_adapter *adapter)
Auke Kokbc7f75f2007-09-17 12:30:59 -07004567{
Ajit Khaparde7274c202009-10-07 02:44:26 +00004568 struct net_device *netdev = adapter->netdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004569 struct e1000_hw *hw = &adapter->hw;
4570 struct pci_dev *pdev = adapter->pdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004571
Bruce Allane921eb12012-11-28 09:28:37 +00004572 /* Prevent stats update while adapter is being reset, or if the pci
Auke Kokbc7f75f2007-09-17 12:30:59 -07004573 * connection is down.
4574 */
4575 if (adapter->link_speed == 0)
4576 return;
4577 if (pci_channel_offline(pdev))
4578 return;
4579
Auke Kokbc7f75f2007-09-17 12:30:59 -07004580 adapter->stats.crcerrs += er32(CRCERRS);
4581 adapter->stats.gprc += er32(GPRC);
Bruce Allan7c257692008-04-23 11:09:00 -07004582 adapter->stats.gorc += er32(GORCL);
Bruce Allane80bd1d2013-05-01 01:19:46 +00004583 er32(GORCH); /* Clear gorc */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004584 adapter->stats.bprc += er32(BPRC);
4585 adapter->stats.mprc += er32(MPRC);
4586 adapter->stats.roc += er32(ROC);
4587
Auke Kokbc7f75f2007-09-17 12:30:59 -07004588 adapter->stats.mpc += er32(MPC);
Bruce Allana4f58f52009-06-02 11:29:18 +00004589
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004590 /* Half-duplex statistics */
4591 if (adapter->link_duplex == HALF_DUPLEX) {
4592 if (adapter->flags2 & FLAG2_HAS_PHY_STATS) {
4593 e1000e_update_phy_stats(adapter);
4594 } else {
4595 adapter->stats.scc += er32(SCC);
4596 adapter->stats.ecol += er32(ECOL);
4597 adapter->stats.mcc += er32(MCC);
4598 adapter->stats.latecol += er32(LATECOL);
4599 adapter->stats.dc += er32(DC);
Bruce Allana4f58f52009-06-02 11:29:18 +00004600
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004601 hw->mac.collision_delta = er32(COLC);
Bruce Allana4f58f52009-06-02 11:29:18 +00004602
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004603 if ((hw->mac.type != e1000_82574) &&
4604 (hw->mac.type != e1000_82583))
4605 adapter->stats.tncrs += er32(TNCRS);
4606 }
4607 adapter->stats.colc += hw->mac.collision_delta;
Bruce Allana4f58f52009-06-02 11:29:18 +00004608 }
Bruce Allan8c7bbb92010-06-16 13:26:41 +00004609
Auke Kokbc7f75f2007-09-17 12:30:59 -07004610 adapter->stats.xonrxc += er32(XONRXC);
4611 adapter->stats.xontxc += er32(XONTXC);
4612 adapter->stats.xoffrxc += er32(XOFFRXC);
4613 adapter->stats.xofftxc += er32(XOFFTXC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004614 adapter->stats.gptc += er32(GPTC);
Bruce Allan7c257692008-04-23 11:09:00 -07004615 adapter->stats.gotc += er32(GOTCL);
Bruce Allane80bd1d2013-05-01 01:19:46 +00004616 er32(GOTCH); /* Clear gotc */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004617 adapter->stats.rnbc += er32(RNBC);
4618 adapter->stats.ruc += er32(RUC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004619
4620 adapter->stats.mptc += er32(MPTC);
4621 adapter->stats.bptc += er32(BPTC);
4622
4623 /* used for adaptive IFS */
4624
4625 hw->mac.tx_packet_delta = er32(TPT);
4626 adapter->stats.tpt += hw->mac.tx_packet_delta;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004627
4628 adapter->stats.algnerrc += er32(ALGNERRC);
4629 adapter->stats.rxerrc += er32(RXERRC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004630 adapter->stats.cexterr += er32(CEXTERR);
4631 adapter->stats.tsctc += er32(TSCTC);
4632 adapter->stats.tsctfc += er32(TSCTFC);
4633
Auke Kokbc7f75f2007-09-17 12:30:59 -07004634 /* Fill out the OS statistics structure */
Ajit Khaparde7274c202009-10-07 02:44:26 +00004635 netdev->stats.multicast = adapter->stats.mprc;
4636 netdev->stats.collisions = adapter->stats.colc;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004637
4638 /* Rx Errors */
4639
Bruce Allane921eb12012-11-28 09:28:37 +00004640 /* RLEC on some newer hardware can be incorrect so build
Bruce Allanad680762008-03-28 09:15:03 -07004641 * our own version based on RUC and ROC
4642 */
Ajit Khaparde7274c202009-10-07 02:44:26 +00004643 netdev->stats.rx_errors = adapter->stats.rxerrc +
Bruce Allanf0ff4392013-02-20 04:05:39 +00004644 adapter->stats.crcerrs + adapter->stats.algnerrc +
4645 adapter->stats.ruc + adapter->stats.roc + adapter->stats.cexterr;
Ajit Khaparde7274c202009-10-07 02:44:26 +00004646 netdev->stats.rx_length_errors = adapter->stats.ruc +
Bruce Allanf0ff4392013-02-20 04:05:39 +00004647 adapter->stats.roc;
Ajit Khaparde7274c202009-10-07 02:44:26 +00004648 netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
4649 netdev->stats.rx_frame_errors = adapter->stats.algnerrc;
4650 netdev->stats.rx_missed_errors = adapter->stats.mpc;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004651
4652 /* Tx Errors */
Bruce Allanf0ff4392013-02-20 04:05:39 +00004653 netdev->stats.tx_errors = adapter->stats.ecol + adapter->stats.latecol;
Ajit Khaparde7274c202009-10-07 02:44:26 +00004654 netdev->stats.tx_aborted_errors = adapter->stats.ecol;
4655 netdev->stats.tx_window_errors = adapter->stats.latecol;
4656 netdev->stats.tx_carrier_errors = adapter->stats.tncrs;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004657
4658 /* Tx Dropped needs to be maintained elsewhere */
4659
Auke Kokbc7f75f2007-09-17 12:30:59 -07004660 /* Management Stats */
4661 adapter->stats.mgptc += er32(MGTPTC);
4662 adapter->stats.mgprc += er32(MGTPRC);
4663 adapter->stats.mgpdc += er32(MGTPDC);
Bruce Allan94fb8482013-01-23 09:00:03 +00004664
4665 /* Correctable ECC Errors */
4666 if (hw->mac.type == e1000_pch_lpt) {
4667 u32 pbeccsts = er32(PBECCSTS);
4668 adapter->corr_errors +=
4669 pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK;
4670 adapter->uncorr_errors +=
4671 (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >>
4672 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT;
4673 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07004674}
4675
Bruce Allan7c257692008-04-23 11:09:00 -07004676/**
4677 * e1000_phy_read_status - Update the PHY register status snapshot
4678 * @adapter: board private structure
4679 **/
4680static void e1000_phy_read_status(struct e1000_adapter *adapter)
4681{
4682 struct e1000_hw *hw = &adapter->hw;
4683 struct e1000_phy_regs *phy = &adapter->phy_regs;
Bruce Allan7c257692008-04-23 11:09:00 -07004684
Bruce Allan97390ab2013-06-29 07:42:25 +00004685 if (!pm_runtime_suspended((&adapter->pdev->dev)->parent) &&
4686 (er32(STATUS) & E1000_STATUS_LU) &&
Bruce Allan7c257692008-04-23 11:09:00 -07004687 (adapter->hw.phy.media_type == e1000_media_type_copper)) {
Bruce Allan90da0662011-01-06 07:02:53 +00004688 int ret_val;
4689
Bruce Allanc2ade1a2013-01-16 08:54:35 +00004690 ret_val = e1e_rphy(hw, MII_BMCR, &phy->bmcr);
4691 ret_val |= e1e_rphy(hw, MII_BMSR, &phy->bmsr);
4692 ret_val |= e1e_rphy(hw, MII_ADVERTISE, &phy->advertise);
4693 ret_val |= e1e_rphy(hw, MII_LPA, &phy->lpa);
4694 ret_val |= e1e_rphy(hw, MII_EXPANSION, &phy->expansion);
4695 ret_val |= e1e_rphy(hw, MII_CTRL1000, &phy->ctrl1000);
4696 ret_val |= e1e_rphy(hw, MII_STAT1000, &phy->stat1000);
4697 ret_val |= e1e_rphy(hw, MII_ESTATUS, &phy->estatus);
Bruce Allan7c257692008-04-23 11:09:00 -07004698 if (ret_val)
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004699 e_warn("Error reading PHY register\n");
Bruce Allan7c257692008-04-23 11:09:00 -07004700 } else {
Bruce Allane921eb12012-11-28 09:28:37 +00004701 /* Do not read PHY registers if link is not up
Bruce Allan7c257692008-04-23 11:09:00 -07004702 * Set values to typical power-on defaults
4703 */
4704 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX);
4705 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL |
4706 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE |
4707 BMSR_ERCAP);
4708 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP |
4709 ADVERTISE_ALL | ADVERTISE_CSMA);
4710 phy->lpa = 0;
4711 phy->expansion = EXPANSION_ENABLENPAGE;
4712 phy->ctrl1000 = ADVERTISE_1000FULL;
4713 phy->stat1000 = 0;
4714 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF);
4715 }
Bruce Allan7c257692008-04-23 11:09:00 -07004716}
4717
Auke Kokbc7f75f2007-09-17 12:30:59 -07004718static void e1000_print_link_info(struct e1000_adapter *adapter)
4719{
Auke Kokbc7f75f2007-09-17 12:30:59 -07004720 struct e1000_hw *hw = &adapter->hw;
4721 u32 ctrl = er32(CTRL);
4722
Bruce Allan8f12fe82008-11-21 16:54:43 -08004723 /* Link status message must follow this format for user tools */
Bruce Allan7dbc1672013-01-12 03:11:25 +00004724 pr_info("%s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n",
4725 adapter->netdev->name, adapter->link_speed,
Jeff Kirsheref456f82011-11-03 11:40:28 +00004726 adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half",
4727 (ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE) ? "Rx/Tx" :
4728 (ctrl & E1000_CTRL_RFCE) ? "Rx" :
4729 (ctrl & E1000_CTRL_TFCE) ? "Tx" : "None");
Auke Kokbc7f75f2007-09-17 12:30:59 -07004730}
4731
Bruce Allan0c6bdb32010-06-17 18:58:43 +00004732static bool e1000e_has_link(struct e1000_adapter *adapter)
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004733{
4734 struct e1000_hw *hw = &adapter->hw;
Rusty Russell3db1cd52011-12-19 13:56:45 +00004735 bool link_active = false;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004736 s32 ret_val = 0;
4737
Bruce Allane921eb12012-11-28 09:28:37 +00004738 /* get_link_status is set on LSC (link status) interrupt or
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004739 * Rx sequence error interrupt. get_link_status will stay
4740 * false until the check_for_link establishes link
4741 * for copper adapters ONLY
4742 */
4743 switch (hw->phy.media_type) {
4744 case e1000_media_type_copper:
4745 if (hw->mac.get_link_status) {
4746 ret_val = hw->mac.ops.check_for_link(hw);
4747 link_active = !hw->mac.get_link_status;
4748 } else {
Rusty Russell3db1cd52011-12-19 13:56:45 +00004749 link_active = true;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004750 }
4751 break;
4752 case e1000_media_type_fiber:
4753 ret_val = hw->mac.ops.check_for_link(hw);
4754 link_active = !!(er32(STATUS) & E1000_STATUS_LU);
4755 break;
4756 case e1000_media_type_internal_serdes:
4757 ret_val = hw->mac.ops.check_for_link(hw);
4758 link_active = adapter->hw.mac.serdes_has_link;
4759 break;
4760 default:
4761 case e1000_media_type_unknown:
4762 break;
4763 }
4764
4765 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) &&
4766 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
4767 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004768 e_info("Gigabit has been disabled, downgrading speed\n");
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004769 }
4770
4771 return link_active;
4772}
4773
4774static void e1000e_enable_receives(struct e1000_adapter *adapter)
4775{
4776 /* make sure the receive unit is started */
4777 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
Bruce Allan12d43f72012-12-05 06:26:14 +00004778 (adapter->flags & FLAG_RESTART_NOW)) {
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004779 struct e1000_hw *hw = &adapter->hw;
4780 u32 rctl = er32(RCTL);
4781 ew32(RCTL, rctl | E1000_RCTL_EN);
Bruce Allan12d43f72012-12-05 06:26:14 +00004782 adapter->flags &= ~FLAG_RESTART_NOW;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004783 }
4784}
4785
Carolyn Wybornyff10e132010-10-28 00:59:53 +00004786static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter)
4787{
4788 struct e1000_hw *hw = &adapter->hw;
4789
Bruce Allane921eb12012-11-28 09:28:37 +00004790 /* With 82574 controllers, PHY needs to be checked periodically
Carolyn Wybornyff10e132010-10-28 00:59:53 +00004791 * for hung state and reset, if two calls return true
4792 */
4793 if (e1000_check_phy_82574(hw))
4794 adapter->phy_hang_count++;
4795 else
4796 adapter->phy_hang_count = 0;
4797
4798 if (adapter->phy_hang_count > 1) {
4799 adapter->phy_hang_count = 0;
4800 schedule_work(&adapter->reset_task);
4801 }
4802}
4803
Auke Kokbc7f75f2007-09-17 12:30:59 -07004804/**
4805 * e1000_watchdog - Timer Call-back
4806 * @data: pointer to adapter cast into an unsigned long
4807 **/
4808static void e1000_watchdog(unsigned long data)
4809{
Bruce Allan53aa82d2013-02-20 04:06:06 +00004810 struct e1000_adapter *adapter = (struct e1000_adapter *)data;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004811
4812 /* Do the rest outside of interrupt context */
4813 schedule_work(&adapter->watchdog_task);
4814
4815 /* TODO: make this use queue_delayed_work() */
4816}
4817
4818static void e1000_watchdog_task(struct work_struct *work)
4819{
4820 struct e1000_adapter *adapter = container_of(work,
Bruce Allan17e813e2013-02-20 04:06:01 +00004821 struct e1000_adapter,
4822 watchdog_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004823 struct net_device *netdev = adapter->netdev;
4824 struct e1000_mac_info *mac = &adapter->hw.mac;
Bruce Allan75eb0fa2008-11-21 16:53:51 -08004825 struct e1000_phy_info *phy = &adapter->hw.phy;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004826 struct e1000_ring *tx_ring = adapter->tx_ring;
4827 struct e1000_hw *hw = &adapter->hw;
4828 u32 link, tctl;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004829
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00004830 if (test_bit(__E1000_DOWN, &adapter->state))
4831 return;
4832
David S. Millerb405e8d2010-02-04 22:31:41 -08004833 link = e1000e_has_link(adapter);
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004834 if ((netif_carrier_ok(netdev)) && link) {
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004835 /* Cancel scheduled suspend requests. */
4836 pm_runtime_resume(netdev->dev.parent);
4837
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004838 e1000e_enable_receives(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004839 goto link_up;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004840 }
4841
4842 if ((e1000e_enable_tx_pkt_filtering(hw)) &&
4843 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id))
4844 e1000_update_mng_vlan(adapter);
4845
Auke Kokbc7f75f2007-09-17 12:30:59 -07004846 if (link) {
4847 if (!netif_carrier_ok(netdev)) {
Rusty Russell3db1cd52011-12-19 13:56:45 +00004848 bool txb2b = true;
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004849
4850 /* Cancel scheduled suspend requests. */
4851 pm_runtime_resume(netdev->dev.parent);
4852
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004853 /* update snapshot of PHY registers on LSC */
Bruce Allan7c257692008-04-23 11:09:00 -07004854 e1000_phy_read_status(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004855 mac->ops.get_link_up_info(&adapter->hw,
Bruce Allan17e813e2013-02-20 04:06:01 +00004856 &adapter->link_speed,
4857 &adapter->link_duplex);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004858 e1000_print_link_info(adapter);
Koki Sanagie792cd92013-02-03 14:03:55 +00004859
4860 /* check if SmartSpeed worked */
4861 e1000e_check_downshift(hw);
4862 if (phy->speed_downgraded)
4863 netdev_warn(netdev,
4864 "Link Speed was downgraded by SmartSpeed\n");
4865
Bruce Allane921eb12012-11-28 09:28:37 +00004866 /* On supported PHYs, check for duplex mismatch only
Bruce Allanf4187b52008-08-26 18:36:50 -07004867 * if link has autonegotiated at 10/100 half
4868 */
4869 if ((hw->phy.type == e1000_phy_igp_3 ||
4870 hw->phy.type == e1000_phy_bm) &&
4871 (hw->mac.autoneg == true) &&
4872 (adapter->link_speed == SPEED_10 ||
4873 adapter->link_speed == SPEED_100) &&
4874 (adapter->link_duplex == HALF_DUPLEX)) {
4875 u16 autoneg_exp;
4876
Bruce Allanc2ade1a2013-01-16 08:54:35 +00004877 e1e_rphy(hw, MII_EXPANSION, &autoneg_exp);
Bruce Allanf4187b52008-08-26 18:36:50 -07004878
Bruce Allanc2ade1a2013-01-16 08:54:35 +00004879 if (!(autoneg_exp & EXPANSION_NWAY))
Jeff Kirsheref456f82011-11-03 11:40:28 +00004880 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 -07004881 }
4882
Emil Tantilovf49c57e2010-03-24 12:55:02 +00004883 /* adjust timeout factor according to speed/duplex */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004884 adapter->tx_timeout_factor = 1;
4885 switch (adapter->link_speed) {
4886 case SPEED_10:
Rusty Russell3db1cd52011-12-19 13:56:45 +00004887 txb2b = false;
Bruce Allan10f1b492008-08-08 18:36:01 -07004888 adapter->tx_timeout_factor = 16;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004889 break;
4890 case SPEED_100:
Rusty Russell3db1cd52011-12-19 13:56:45 +00004891 txb2b = false;
Bruce Allan4c86e0b2009-11-19 12:35:26 +00004892 adapter->tx_timeout_factor = 10;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004893 break;
4894 }
4895
Bruce Allane921eb12012-11-28 09:28:37 +00004896 /* workaround: re-program speed mode bit after
Bruce Allanad680762008-03-28 09:15:03 -07004897 * link-up event
4898 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004899 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) &&
4900 !txb2b) {
4901 u32 tarc0;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07004902 tarc0 = er32(TARC(0));
Auke Kokbc7f75f2007-09-17 12:30:59 -07004903 tarc0 &= ~SPEED_MODE_BIT;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07004904 ew32(TARC(0), tarc0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004905 }
4906
Bruce Allane921eb12012-11-28 09:28:37 +00004907 /* disable TSO for pcie and 10/100 speeds, to avoid
Bruce Allanad680762008-03-28 09:15:03 -07004908 * some hardware issues
4909 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004910 if (!(adapter->flags & FLAG_TSO_FORCE)) {
4911 switch (adapter->link_speed) {
4912 case SPEED_10:
4913 case SPEED_100:
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004914 e_info("10/100 speed: disabling TSO\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07004915 netdev->features &= ~NETIF_F_TSO;
4916 netdev->features &= ~NETIF_F_TSO6;
4917 break;
4918 case SPEED_1000:
4919 netdev->features |= NETIF_F_TSO;
4920 netdev->features |= NETIF_F_TSO6;
4921 break;
4922 default:
4923 /* oops */
4924 break;
4925 }
4926 }
4927
Bruce Allane921eb12012-11-28 09:28:37 +00004928 /* enable transmits in the hardware, need to do this
Bruce Allanad680762008-03-28 09:15:03 -07004929 * after setting TARC(0)
4930 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004931 tctl = er32(TCTL);
4932 tctl |= E1000_TCTL_EN;
4933 ew32(TCTL, tctl);
4934
Bruce Allane921eb12012-11-28 09:28:37 +00004935 /* Perform any post-link-up configuration before
Bruce Allan75eb0fa2008-11-21 16:53:51 -08004936 * reporting link up.
4937 */
4938 if (phy->ops.cfg_on_link_up)
4939 phy->ops.cfg_on_link_up(hw);
4940
Auke Kokbc7f75f2007-09-17 12:30:59 -07004941 netif_carrier_on(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004942
4943 if (!test_bit(__E1000_DOWN, &adapter->state))
4944 mod_timer(&adapter->phy_info_timer,
4945 round_jiffies(jiffies + 2 * HZ));
Auke Kokbc7f75f2007-09-17 12:30:59 -07004946 }
4947 } else {
4948 if (netif_carrier_ok(netdev)) {
4949 adapter->link_speed = 0;
4950 adapter->link_duplex = 0;
Bruce Allan8f12fe82008-11-21 16:54:43 -08004951 /* Link status message must follow this format */
Bruce Allan7dbc1672013-01-12 03:11:25 +00004952 pr_info("%s NIC Link is Down\n", adapter->netdev->name);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004953 netif_carrier_off(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004954 if (!test_bit(__E1000_DOWN, &adapter->state))
4955 mod_timer(&adapter->phy_info_timer,
4956 round_jiffies(jiffies + 2 * HZ));
4957
Bruce Allan12d43f72012-12-05 06:26:14 +00004958 /* The link is lost so the controller stops DMA.
4959 * If there is queued Tx work that cannot be done
4960 * or if on an 8000ES2LAN which requires a Rx packet
4961 * buffer work-around on link down event, reset the
4962 * controller to flush the Tx/Rx packet buffers.
4963 * (Do the reset outside of interrupt context).
4964 */
4965 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) ||
4966 (e1000_desc_unused(tx_ring) + 1 < tx_ring->count))
4967 adapter->flags |= FLAG_RESTART_NOW;
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00004968 else
4969 pm_schedule_suspend(netdev->dev.parent,
Bruce Allan17e813e2013-02-20 04:06:01 +00004970 LINK_TIMEOUT);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004971 }
4972 }
4973
4974link_up:
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00004975 spin_lock(&adapter->stats64_lock);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004976 e1000e_update_stats(adapter);
4977
4978 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
4979 adapter->tpt_old = adapter->stats.tpt;
4980 mac->collision_delta = adapter->stats.colc - adapter->colc_old;
4981 adapter->colc_old = adapter->stats.colc;
4982
Bruce Allan7c257692008-04-23 11:09:00 -07004983 adapter->gorc = adapter->stats.gorc - adapter->gorc_old;
4984 adapter->gorc_old = adapter->stats.gorc;
4985 adapter->gotc = adapter->stats.gotc - adapter->gotc_old;
4986 adapter->gotc_old = adapter->stats.gotc;
Flavio Leitner2084b112011-04-05 04:27:43 +00004987 spin_unlock(&adapter->stats64_lock);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004988
Bruce Allan12d43f72012-12-05 06:26:14 +00004989 if (adapter->flags & FLAG_RESTART_NOW) {
Bruce Allan90da0662011-01-06 07:02:53 +00004990 schedule_work(&adapter->reset_task);
4991 /* return immediately since reset is imminent */
4992 return;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004993 }
4994
Bruce Allan12d43f72012-12-05 06:26:14 +00004995 e1000e_update_adaptive(&adapter->hw);
4996
Jesse Brandeburgeab2abf2010-05-04 22:26:03 +00004997 /* Simple mode for Interrupt Throttle Rate (ITR) */
4998 if (adapter->itr_setting == 4) {
Bruce Allane921eb12012-11-28 09:28:37 +00004999 /* Symmetric Tx/Rx gets a reduced ITR=2000;
Jesse Brandeburgeab2abf2010-05-04 22:26:03 +00005000 * Total asymmetrical Tx or Rx gets ITR=8000;
5001 * everyone else is between 2000-8000.
5002 */
5003 u32 goc = (adapter->gotc + adapter->gorc) / 10000;
5004 u32 dif = (adapter->gotc > adapter->gorc ?
Bruce Allan17e813e2013-02-20 04:06:01 +00005005 adapter->gotc - adapter->gorc :
5006 adapter->gorc - adapter->gotc) / 10000;
Jesse Brandeburgeab2abf2010-05-04 22:26:03 +00005007 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
5008
Matthew Vick22a4cca2012-07-12 00:02:42 +00005009 e1000e_write_itr(adapter, itr);
Jesse Brandeburgeab2abf2010-05-04 22:26:03 +00005010 }
5011
Bruce Allanad680762008-03-28 09:15:03 -07005012 /* Cause software interrupt to ensure Rx ring is cleaned */
Bruce Allan4662e822008-08-26 18:37:06 -07005013 if (adapter->msix_entries)
5014 ew32(ICS, adapter->rx_ring->ims_val);
5015 else
5016 ew32(ICS, E1000_ICS_RXDMT0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005017
Jesse Brandeburg713b3c92011-02-02 10:19:50 +00005018 /* flush pending descriptors to memory before detecting Tx hang */
5019 e1000e_flush_descriptors(adapter);
5020
Auke Kokbc7f75f2007-09-17 12:30:59 -07005021 /* Force detection of hung controller every watchdog period */
Rusty Russell3db1cd52011-12-19 13:56:45 +00005022 adapter->detect_tx_hung = true;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005023
Bruce Allane921eb12012-11-28 09:28:37 +00005024 /* With 82571 controllers, LAA may be overwritten due to controller
Bruce Allanad680762008-03-28 09:15:03 -07005025 * reset from the other port. Set the appropriate LAA in RAR[0]
5026 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005027 if (e1000e_get_laa_state_82571(hw))
Bruce Allan69e1e012012-04-14 03:28:50 +00005028 hw->mac.ops.rar_set(hw, adapter->hw.mac.addr, 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005029
Carolyn Wybornyff10e132010-10-28 00:59:53 +00005030 if (adapter->flags2 & FLAG2_CHECK_PHY_HANG)
5031 e1000e_check_82574_phy_workaround(adapter);
5032
Bruce Allanb67e1912012-12-27 08:32:33 +00005033 /* Clear valid timestamp stuck in RXSTMPL/H due to a Rx error */
5034 if (adapter->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE) {
5035 if ((adapter->flags2 & FLAG2_CHECK_RX_HWTSTAMP) &&
5036 (er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID)) {
5037 er32(RXSTMPH);
5038 adapter->rx_hwtstamp_cleared++;
5039 } else {
5040 adapter->flags2 |= FLAG2_CHECK_RX_HWTSTAMP;
5041 }
5042 }
5043
Auke Kokbc7f75f2007-09-17 12:30:59 -07005044 /* Reset the timer */
5045 if (!test_bit(__E1000_DOWN, &adapter->state))
5046 mod_timer(&adapter->watchdog_timer,
5047 round_jiffies(jiffies + 2 * HZ));
5048}
5049
5050#define E1000_TX_FLAGS_CSUM 0x00000001
5051#define E1000_TX_FLAGS_VLAN 0x00000002
5052#define E1000_TX_FLAGS_TSO 0x00000004
5053#define E1000_TX_FLAGS_IPV4 0x00000008
Ben Greear943146d2012-02-11 15:39:40 +00005054#define E1000_TX_FLAGS_NO_FCS 0x00000010
Bruce Allanb67e1912012-12-27 08:32:33 +00005055#define E1000_TX_FLAGS_HWTSTAMP 0x00000020
Auke Kokbc7f75f2007-09-17 12:30:59 -07005056#define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
5057#define E1000_TX_FLAGS_VLAN_SHIFT 16
5058
Bruce Allan55aa6982011-12-16 00:45:45 +00005059static int e1000_tso(struct e1000_ring *tx_ring, struct sk_buff *skb)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005060{
Auke Kokbc7f75f2007-09-17 12:30:59 -07005061 struct e1000_context_desc *context_desc;
5062 struct e1000_buffer *buffer_info;
5063 unsigned int i;
5064 u32 cmd_length = 0;
Bruce Allan70443ae2012-08-17 06:18:13 +00005065 u16 ipcse = 0, mss;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005066 u8 ipcss, ipcso, tucss, tucso, hdr_len;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005067
Bruce Allan3d5e33c2009-11-20 23:27:03 +00005068 if (!skb_is_gso(skb))
5069 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005070
Bruce Allan3d5e33c2009-11-20 23:27:03 +00005071 if (skb_header_cloned(skb)) {
Bruce Allan90da0662011-01-06 07:02:53 +00005072 int err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
5073
Bruce Allan3d5e33c2009-11-20 23:27:03 +00005074 if (err)
5075 return err;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005076 }
5077
Bruce Allan3d5e33c2009-11-20 23:27:03 +00005078 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
5079 mss = skb_shinfo(skb)->gso_size;
5080 if (skb->protocol == htons(ETH_P_IP)) {
5081 struct iphdr *iph = ip_hdr(skb);
5082 iph->tot_len = 0;
5083 iph->check = 0;
5084 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
Bruce Allanf0ff4392013-02-20 04:05:39 +00005085 0, IPPROTO_TCP, 0);
Bruce Allan3d5e33c2009-11-20 23:27:03 +00005086 cmd_length = E1000_TXD_CMD_IP;
5087 ipcse = skb_transport_offset(skb) - 1;
Sridhar Samudrala8e1e8a42010-01-23 02:02:21 -08005088 } else if (skb_is_gso_v6(skb)) {
Bruce Allan3d5e33c2009-11-20 23:27:03 +00005089 ipv6_hdr(skb)->payload_len = 0;
5090 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
Bruce Allanf0ff4392013-02-20 04:05:39 +00005091 &ipv6_hdr(skb)->daddr,
5092 0, IPPROTO_TCP, 0);
Bruce Allan3d5e33c2009-11-20 23:27:03 +00005093 ipcse = 0;
5094 }
5095 ipcss = skb_network_offset(skb);
5096 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
5097 tucss = skb_transport_offset(skb);
5098 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
Bruce Allan3d5e33c2009-11-20 23:27:03 +00005099
5100 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
Bruce Allanf0ff4392013-02-20 04:05:39 +00005101 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
Bruce Allan3d5e33c2009-11-20 23:27:03 +00005102
5103 i = tx_ring->next_to_use;
5104 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
5105 buffer_info = &tx_ring->buffer_info[i];
5106
Bruce Allane80bd1d2013-05-01 01:19:46 +00005107 context_desc->lower_setup.ip_fields.ipcss = ipcss;
5108 context_desc->lower_setup.ip_fields.ipcso = ipcso;
5109 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
Bruce Allan3d5e33c2009-11-20 23:27:03 +00005110 context_desc->upper_setup.tcp_fields.tucss = tucss;
5111 context_desc->upper_setup.tcp_fields.tucso = tucso;
Bruce Allan70443ae2012-08-17 06:18:13 +00005112 context_desc->upper_setup.tcp_fields.tucse = 0;
Bruce Allane80bd1d2013-05-01 01:19:46 +00005113 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
Bruce Allan3d5e33c2009-11-20 23:27:03 +00005114 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
5115 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
5116
5117 buffer_info->time_stamp = jiffies;
5118 buffer_info->next_to_watch = i;
5119
5120 i++;
5121 if (i == tx_ring->count)
5122 i = 0;
5123 tx_ring->next_to_use = i;
5124
5125 return 1;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005126}
5127
Bruce Allan55aa6982011-12-16 00:45:45 +00005128static bool e1000_tx_csum(struct e1000_ring *tx_ring, struct sk_buff *skb)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005129{
Bruce Allan55aa6982011-12-16 00:45:45 +00005130 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005131 struct e1000_context_desc *context_desc;
5132 struct e1000_buffer *buffer_info;
5133 unsigned int i;
5134 u8 css;
Dave Grahamaf807c82008-10-09 14:28:58 -07005135 u32 cmd_len = E1000_TXD_CMD_DEXT;
Arthur Jones5f66f202009-03-19 01:13:08 +00005136 __be16 protocol;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005137
Dave Grahamaf807c82008-10-09 14:28:58 -07005138 if (skb->ip_summed != CHECKSUM_PARTIAL)
5139 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005140
Arthur Jones5f66f202009-03-19 01:13:08 +00005141 if (skb->protocol == cpu_to_be16(ETH_P_8021Q))
5142 protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto;
5143 else
5144 protocol = skb->protocol;
5145
Arthur Jones3f518392009-03-20 15:56:35 -07005146 switch (protocol) {
Harvey Harrison09640e62009-02-01 00:45:17 -08005147 case cpu_to_be16(ETH_P_IP):
Dave Grahamaf807c82008-10-09 14:28:58 -07005148 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
5149 cmd_len |= E1000_TXD_CMD_TCP;
5150 break;
Harvey Harrison09640e62009-02-01 00:45:17 -08005151 case cpu_to_be16(ETH_P_IPV6):
Dave Grahamaf807c82008-10-09 14:28:58 -07005152 /* XXX not handling all IPV6 headers */
5153 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
5154 cmd_len |= E1000_TXD_CMD_TCP;
5155 break;
5156 default:
5157 if (unlikely(net_ratelimit()))
Arthur Jones5f66f202009-03-19 01:13:08 +00005158 e_warn("checksum_partial proto=%x!\n",
5159 be16_to_cpu(protocol));
Dave Grahamaf807c82008-10-09 14:28:58 -07005160 break;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005161 }
5162
Michał Mirosław0d0b1672010-12-14 15:24:08 +00005163 css = skb_checksum_start_offset(skb);
Dave Grahamaf807c82008-10-09 14:28:58 -07005164
5165 i = tx_ring->next_to_use;
5166 buffer_info = &tx_ring->buffer_info[i];
5167 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
5168
5169 context_desc->lower_setup.ip_config = 0;
5170 context_desc->upper_setup.tcp_fields.tucss = css;
Bruce Allanf0ff4392013-02-20 04:05:39 +00005171 context_desc->upper_setup.tcp_fields.tucso = css + skb->csum_offset;
Dave Grahamaf807c82008-10-09 14:28:58 -07005172 context_desc->upper_setup.tcp_fields.tucse = 0;
5173 context_desc->tcp_seg_setup.data = 0;
5174 context_desc->cmd_and_length = cpu_to_le32(cmd_len);
5175
5176 buffer_info->time_stamp = jiffies;
5177 buffer_info->next_to_watch = i;
5178
5179 i++;
5180 if (i == tx_ring->count)
5181 i = 0;
5182 tx_ring->next_to_use = i;
5183
5184 return 1;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005185}
5186
Bruce Allan55aa6982011-12-16 00:45:45 +00005187static int e1000_tx_map(struct e1000_ring *tx_ring, struct sk_buff *skb,
5188 unsigned int first, unsigned int max_per_txd,
Bruce Alland821a4c2012-08-24 20:38:11 +00005189 unsigned int nr_frags)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005190{
Bruce Allan55aa6982011-12-16 00:45:45 +00005191 struct e1000_adapter *adapter = tx_ring->adapter;
Alexander Duyck03b13202009-12-02 16:45:31 +00005192 struct pci_dev *pdev = adapter->pdev;
Alexander Duyck1b7719c2009-03-19 01:12:50 +00005193 struct e1000_buffer *buffer_info;
Jesse Brandeburg8ddc9512009-03-02 16:02:53 -08005194 unsigned int len = skb_headlen(skb);
Alexander Duyck03b13202009-12-02 16:45:31 +00005195 unsigned int offset = 0, size, count = 0, i;
Tom Herbert9ed318d2010-05-05 14:02:27 +00005196 unsigned int f, bytecount, segs;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005197
5198 i = tx_ring->next_to_use;
5199
5200 while (len) {
Alexander Duyck1b7719c2009-03-19 01:12:50 +00005201 buffer_info = &tx_ring->buffer_info[i];
Auke Kokbc7f75f2007-09-17 12:30:59 -07005202 size = min(len, max_per_txd);
5203
Auke Kokbc7f75f2007-09-17 12:30:59 -07005204 buffer_info->length = size;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005205 buffer_info->time_stamp = jiffies;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005206 buffer_info->next_to_watch = i;
Nick Nunley0be3f552010-04-27 13:09:05 +00005207 buffer_info->dma = dma_map_single(&pdev->dev,
5208 skb->data + offset,
Bruce Allanaf667a22010-12-31 06:10:01 +00005209 size, DMA_TO_DEVICE);
Alexander Duyck03b13202009-12-02 16:45:31 +00005210 buffer_info->mapped_as_page = false;
Nick Nunley0be3f552010-04-27 13:09:05 +00005211 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
Alexander Duyck03b13202009-12-02 16:45:31 +00005212 goto dma_error;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005213
5214 len -= size;
5215 offset += size;
Alexander Duyck03b13202009-12-02 16:45:31 +00005216 count++;
Alexander Duyck1b7719c2009-03-19 01:12:50 +00005217
5218 if (len) {
5219 i++;
5220 if (i == tx_ring->count)
5221 i = 0;
5222 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07005223 }
5224
5225 for (f = 0; f < nr_frags; f++) {
Eric Dumazet9e903e02011-10-18 21:00:24 +00005226 const struct skb_frag_struct *frag;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005227
5228 frag = &skb_shinfo(skb)->frags[f];
Eric Dumazet9e903e02011-10-18 21:00:24 +00005229 len = skb_frag_size(frag);
Ian Campbell877749b2011-08-29 23:18:26 +00005230 offset = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005231
5232 while (len) {
Alexander Duyck1b7719c2009-03-19 01:12:50 +00005233 i++;
5234 if (i == tx_ring->count)
5235 i = 0;
5236
Auke Kokbc7f75f2007-09-17 12:30:59 -07005237 buffer_info = &tx_ring->buffer_info[i];
5238 size = min(len, max_per_txd);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005239
5240 buffer_info->length = size;
5241 buffer_info->time_stamp = jiffies;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005242 buffer_info->next_to_watch = i;
Ian Campbell877749b2011-08-29 23:18:26 +00005243 buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag,
Bruce Allan17e813e2013-02-20 04:06:01 +00005244 offset, size,
5245 DMA_TO_DEVICE);
Alexander Duyck03b13202009-12-02 16:45:31 +00005246 buffer_info->mapped_as_page = true;
Nick Nunley0be3f552010-04-27 13:09:05 +00005247 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
Alexander Duyck03b13202009-12-02 16:45:31 +00005248 goto dma_error;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005249
5250 len -= size;
5251 offset += size;
5252 count++;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005253 }
5254 }
5255
Bruce Allanaf667a22010-12-31 06:10:01 +00005256 segs = skb_shinfo(skb)->gso_segs ? : 1;
Tom Herbert9ed318d2010-05-05 14:02:27 +00005257 /* multiply data chunks by size of headers */
5258 bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len;
5259
Auke Kokbc7f75f2007-09-17 12:30:59 -07005260 tx_ring->buffer_info[i].skb = skb;
Tom Herbert9ed318d2010-05-05 14:02:27 +00005261 tx_ring->buffer_info[i].segs = segs;
5262 tx_ring->buffer_info[i].bytecount = bytecount;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005263 tx_ring->buffer_info[first].next_to_watch = i;
5264
5265 return count;
Alexander Duyck03b13202009-12-02 16:45:31 +00005266
5267dma_error:
Bruce Allanaf667a22010-12-31 06:10:01 +00005268 dev_err(&pdev->dev, "Tx DMA map failed\n");
Alexander Duyck03b13202009-12-02 16:45:31 +00005269 buffer_info->dma = 0;
Roel Kluinc1fa3472010-01-19 14:21:45 +00005270 if (count)
Alexander Duyck03b13202009-12-02 16:45:31 +00005271 count--;
Roel Kluinc1fa3472010-01-19 14:21:45 +00005272
5273 while (count--) {
Bruce Allanaf667a22010-12-31 06:10:01 +00005274 if (i == 0)
Alexander Duyck03b13202009-12-02 16:45:31 +00005275 i += tx_ring->count;
Roel Kluinc1fa3472010-01-19 14:21:45 +00005276 i--;
Alexander Duyck03b13202009-12-02 16:45:31 +00005277 buffer_info = &tx_ring->buffer_info[i];
Bruce Allan55aa6982011-12-16 00:45:45 +00005278 e1000_put_txbuf(tx_ring, buffer_info);
Alexander Duyck03b13202009-12-02 16:45:31 +00005279 }
5280
5281 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005282}
5283
Bruce Allan55aa6982011-12-16 00:45:45 +00005284static void e1000_tx_queue(struct e1000_ring *tx_ring, int tx_flags, int count)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005285{
Bruce Allan55aa6982011-12-16 00:45:45 +00005286 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005287 struct e1000_tx_desc *tx_desc = NULL;
5288 struct e1000_buffer *buffer_info;
5289 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
5290 unsigned int i;
5291
5292 if (tx_flags & E1000_TX_FLAGS_TSO) {
5293 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
Bruce Allanf0ff4392013-02-20 04:05:39 +00005294 E1000_TXD_CMD_TSE;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005295 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
5296
5297 if (tx_flags & E1000_TX_FLAGS_IPV4)
5298 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
5299 }
5300
5301 if (tx_flags & E1000_TX_FLAGS_CSUM) {
5302 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
5303 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
5304 }
5305
5306 if (tx_flags & E1000_TX_FLAGS_VLAN) {
5307 txd_lower |= E1000_TXD_CMD_VLE;
5308 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
5309 }
5310
Ben Greear943146d2012-02-11 15:39:40 +00005311 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
5312 txd_lower &= ~(E1000_TXD_CMD_IFCS);
5313
Bruce Allanb67e1912012-12-27 08:32:33 +00005314 if (unlikely(tx_flags & E1000_TX_FLAGS_HWTSTAMP)) {
5315 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
5316 txd_upper |= E1000_TXD_EXTCMD_TSTAMP;
5317 }
5318
Auke Kokbc7f75f2007-09-17 12:30:59 -07005319 i = tx_ring->next_to_use;
5320
Bruce Allan36b973d2010-11-24 07:42:43 +00005321 do {
Auke Kokbc7f75f2007-09-17 12:30:59 -07005322 buffer_info = &tx_ring->buffer_info[i];
5323 tx_desc = E1000_TX_DESC(*tx_ring, i);
5324 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
Bruce Allanf0ff4392013-02-20 04:05:39 +00005325 tx_desc->lower.data = cpu_to_le32(txd_lower |
5326 buffer_info->length);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005327 tx_desc->upper.data = cpu_to_le32(txd_upper);
5328
5329 i++;
5330 if (i == tx_ring->count)
5331 i = 0;
Bruce Allan36b973d2010-11-24 07:42:43 +00005332 } while (--count > 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005333
5334 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
5335
Ben Greear943146d2012-02-11 15:39:40 +00005336 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */
5337 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
5338 tx_desc->lower.data &= ~(cpu_to_le32(E1000_TXD_CMD_IFCS));
5339
Bruce Allane921eb12012-11-28 09:28:37 +00005340 /* Force memory writes to complete before letting h/w
Auke Kokbc7f75f2007-09-17 12:30:59 -07005341 * know there are new descriptors to fetch. (Only
5342 * applicable for weak-ordered memory model archs,
Bruce Allanad680762008-03-28 09:15:03 -07005343 * such as IA-64).
5344 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005345 wmb();
5346
5347 tx_ring->next_to_use = i;
David S. Miller823dcd22011-08-20 10:39:12 -07005348
5349 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
Bruce Allan55aa6982011-12-16 00:45:45 +00005350 e1000e_update_tdt_wa(tx_ring, i);
David S. Miller823dcd22011-08-20 10:39:12 -07005351 else
Bruce Allanc5083cf2011-12-16 00:45:40 +00005352 writel(i, tx_ring->tail);
David S. Miller823dcd22011-08-20 10:39:12 -07005353
Bruce Allane921eb12012-11-28 09:28:37 +00005354 /* we need this if more than one processor can write to our tail
Bruce Allanad680762008-03-28 09:15:03 -07005355 * at a time, it synchronizes IO on IA64/Altix systems
5356 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005357 mmiowb();
5358}
5359
5360#define MINIMUM_DHCP_PACKET_SIZE 282
5361static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
5362 struct sk_buff *skb)
5363{
Bruce Allane80bd1d2013-05-01 01:19:46 +00005364 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005365 u16 length, offset;
5366
Bruce Alland60923c2012-12-05 06:26:56 +00005367 if (vlan_tx_tag_present(skb) &&
5368 !((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) &&
5369 (adapter->hw.mng_cookie.status &
5370 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
5371 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005372
5373 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE)
5374 return 0;
5375
Bruce Allan53aa82d2013-02-20 04:06:06 +00005376 if (((struct ethhdr *)skb->data)->h_proto != htons(ETH_P_IP))
Auke Kokbc7f75f2007-09-17 12:30:59 -07005377 return 0;
5378
5379 {
Bruce Allan362e20c2013-02-20 04:05:45 +00005380 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data + 14);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005381 struct udphdr *udp;
5382
5383 if (ip->protocol != IPPROTO_UDP)
5384 return 0;
5385
5386 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
5387 if (ntohs(udp->dest) != 67)
5388 return 0;
5389
5390 offset = (u8 *)udp + 8 - skb->data;
5391 length = skb->len - offset;
5392 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length);
5393 }
5394
5395 return 0;
5396}
5397
Bruce Allan55aa6982011-12-16 00:45:45 +00005398static int __e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005399{
Bruce Allan55aa6982011-12-16 00:45:45 +00005400 struct e1000_adapter *adapter = tx_ring->adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005401
Bruce Allan55aa6982011-12-16 00:45:45 +00005402 netif_stop_queue(adapter->netdev);
Bruce Allane921eb12012-11-28 09:28:37 +00005403 /* Herbert's original patch had:
Auke Kokbc7f75f2007-09-17 12:30:59 -07005404 * smp_mb__after_netif_stop_queue();
Bruce Allanad680762008-03-28 09:15:03 -07005405 * but since that doesn't exist yet, just open code it.
5406 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005407 smp_mb();
5408
Bruce Allane921eb12012-11-28 09:28:37 +00005409 /* We need to check again in a case another CPU has just
Bruce Allanad680762008-03-28 09:15:03 -07005410 * made room available.
5411 */
Bruce Allan55aa6982011-12-16 00:45:45 +00005412 if (e1000_desc_unused(tx_ring) < size)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005413 return -EBUSY;
5414
5415 /* A reprieve! */
Bruce Allan55aa6982011-12-16 00:45:45 +00005416 netif_start_queue(adapter->netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005417 ++adapter->restart_queue;
5418 return 0;
5419}
5420
Bruce Allan55aa6982011-12-16 00:45:45 +00005421static int e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005422{
Bruce Alland821a4c2012-08-24 20:38:11 +00005423 BUG_ON(size > tx_ring->count);
5424
Bruce Allan55aa6982011-12-16 00:45:45 +00005425 if (e1000_desc_unused(tx_ring) >= size)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005426 return 0;
Bruce Allan55aa6982011-12-16 00:45:45 +00005427 return __e1000_maybe_stop_tx(tx_ring, size);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005428}
5429
Stephen Hemminger3b29a562009-08-31 19:50:55 +00005430static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
5431 struct net_device *netdev)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005432{
5433 struct e1000_adapter *adapter = netdev_priv(netdev);
5434 struct e1000_ring *tx_ring = adapter->tx_ring;
5435 unsigned int first;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005436 unsigned int tx_flags = 0;
Eric Dumazete743d312010-04-14 15:59:40 -07005437 unsigned int len = skb_headlen(skb);
Auke Kok4e6c7092007-10-05 14:15:23 -07005438 unsigned int nr_frags;
5439 unsigned int mss;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005440 int count = 0;
5441 int tso;
5442 unsigned int f;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005443
5444 if (test_bit(__E1000_DOWN, &adapter->state)) {
5445 dev_kfree_skb_any(skb);
5446 return NETDEV_TX_OK;
5447 }
5448
5449 if (skb->len <= 0) {
5450 dev_kfree_skb_any(skb);
5451 return NETDEV_TX_OK;
5452 }
5453
Bruce Allane921eb12012-11-28 09:28:37 +00005454 /* The minimum packet size with TCTL.PSP set is 17 bytes so
Tushar Dave6e97c172012-09-14 02:21:37 +00005455 * pad skb in order to meet this minimum size requirement
5456 */
5457 if (unlikely(skb->len < 17)) {
5458 if (skb_pad(skb, 17 - skb->len))
5459 return NETDEV_TX_OK;
5460 skb->len = 17;
5461 skb_set_tail_pointer(skb, 17);
5462 }
5463
Auke Kokbc7f75f2007-09-17 12:30:59 -07005464 mss = skb_shinfo(skb)->gso_size;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005465 if (mss) {
5466 u8 hdr_len;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005467
Bruce Allane921eb12012-11-28 09:28:37 +00005468 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
Bruce Allanad680762008-03-28 09:15:03 -07005469 * points to just header, pull a few bytes of payload from
5470 * frags into skb->data
5471 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005472 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
Bruce Allane921eb12012-11-28 09:28:37 +00005473 /* we do this workaround for ES2LAN, but it is un-necessary,
Bruce Allanad680762008-03-28 09:15:03 -07005474 * avoiding it could save a lot of cycles
5475 */
Auke Kok4e6c7092007-10-05 14:15:23 -07005476 if (skb->data_len && (hdr_len == len)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07005477 unsigned int pull_size;
5478
Bruce Allana2a5b322012-01-31 06:37:17 +00005479 pull_size = min_t(unsigned int, 4, skb->data_len);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005480 if (!__pskb_pull_tail(skb, pull_size)) {
Jeff Kirsher44defeb2008-08-04 17:20:41 -07005481 e_err("__pskb_pull_tail failed.\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07005482 dev_kfree_skb_any(skb);
5483 return NETDEV_TX_OK;
5484 }
Eric Dumazete743d312010-04-14 15:59:40 -07005485 len = skb_headlen(skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005486 }
5487 }
5488
5489 /* reserve a descriptor for the offload context */
5490 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
5491 count++;
5492 count++;
5493
Bruce Alland821a4c2012-08-24 20:38:11 +00005494 count += DIV_ROUND_UP(len, adapter->tx_fifo_limit);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005495
5496 nr_frags = skb_shinfo(skb)->nr_frags;
5497 for (f = 0; f < nr_frags; f++)
Bruce Alland821a4c2012-08-24 20:38:11 +00005498 count += DIV_ROUND_UP(skb_frag_size(&skb_shinfo(skb)->frags[f]),
5499 adapter->tx_fifo_limit);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005500
5501 if (adapter->hw.mac.tx_pkt_filtering)
5502 e1000_transfer_dhcp_info(adapter, skb);
5503
Bruce Allane921eb12012-11-28 09:28:37 +00005504 /* need: count + 2 desc gap to keep tail from touching
Bruce Allanad680762008-03-28 09:15:03 -07005505 * head, otherwise try next time
5506 */
Bruce Allan55aa6982011-12-16 00:45:45 +00005507 if (e1000_maybe_stop_tx(tx_ring, count + 2))
Auke Kokbc7f75f2007-09-17 12:30:59 -07005508 return NETDEV_TX_BUSY;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005509
Jesse Grosseab6d182010-10-20 13:56:03 +00005510 if (vlan_tx_tag_present(skb)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07005511 tx_flags |= E1000_TX_FLAGS_VLAN;
5512 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
5513 }
5514
5515 first = tx_ring->next_to_use;
5516
Bruce Allan55aa6982011-12-16 00:45:45 +00005517 tso = e1000_tso(tx_ring, skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005518 if (tso < 0) {
5519 dev_kfree_skb_any(skb);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005520 return NETDEV_TX_OK;
5521 }
5522
5523 if (tso)
5524 tx_flags |= E1000_TX_FLAGS_TSO;
Bruce Allan55aa6982011-12-16 00:45:45 +00005525 else if (e1000_tx_csum(tx_ring, skb))
Auke Kokbc7f75f2007-09-17 12:30:59 -07005526 tx_flags |= E1000_TX_FLAGS_CSUM;
5527
Bruce Allane921eb12012-11-28 09:28:37 +00005528 /* Old method was to assume IPv4 packet by default if TSO was enabled.
Auke Kokbc7f75f2007-09-17 12:30:59 -07005529 * 82571 hardware supports TSO capabilities for IPv6 as well...
Bruce Allanad680762008-03-28 09:15:03 -07005530 * no longer assume, we must.
5531 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005532 if (skb->protocol == htons(ETH_P_IP))
5533 tx_flags |= E1000_TX_FLAGS_IPV4;
5534
Ben Greear943146d2012-02-11 15:39:40 +00005535 if (unlikely(skb->no_fcs))
5536 tx_flags |= E1000_TX_FLAGS_NO_FCS;
5537
Lucas De Marchi25985ed2011-03-30 22:57:33 -03005538 /* if count is 0 then mapping error has occurred */
Bruce Alland821a4c2012-08-24 20:38:11 +00005539 count = e1000_tx_map(tx_ring, skb, first, adapter->tx_fifo_limit,
5540 nr_frags);
Alexander Duyck1b7719c2009-03-19 01:12:50 +00005541 if (count) {
Bruce Allanb67e1912012-12-27 08:32:33 +00005542 if (unlikely((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
5543 !adapter->tx_hwtstamp_skb)) {
5544 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
5545 tx_flags |= E1000_TX_FLAGS_HWTSTAMP;
5546 adapter->tx_hwtstamp_skb = skb_get(skb);
5547 schedule_work(&adapter->tx_hwtstamp_work);
5548 } else {
5549 skb_tx_timestamp(skb);
5550 }
Willem de Bruijn80be3122012-04-27 09:04:05 +00005551
Tom Herbert3f0cfa32011-11-28 16:33:16 +00005552 netdev_sent_queue(netdev, skb->len);
Bruce Allan55aa6982011-12-16 00:45:45 +00005553 e1000_tx_queue(tx_ring, tx_flags, count);
Alexander Duyck1b7719c2009-03-19 01:12:50 +00005554 /* Make sure there is space in the ring for the next send. */
Bruce Alland821a4c2012-08-24 20:38:11 +00005555 e1000_maybe_stop_tx(tx_ring,
5556 (MAX_SKB_FRAGS *
5557 DIV_ROUND_UP(PAGE_SIZE,
5558 adapter->tx_fifo_limit) + 2));
Alexander Duyck1b7719c2009-03-19 01:12:50 +00005559 } else {
Auke Kokbc7f75f2007-09-17 12:30:59 -07005560 dev_kfree_skb_any(skb);
Alexander Duyck1b7719c2009-03-19 01:12:50 +00005561 tx_ring->buffer_info[first].time_stamp = 0;
5562 tx_ring->next_to_use = first;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005563 }
5564
Auke Kokbc7f75f2007-09-17 12:30:59 -07005565 return NETDEV_TX_OK;
5566}
5567
5568/**
5569 * e1000_tx_timeout - Respond to a Tx Hang
5570 * @netdev: network interface device structure
5571 **/
5572static void e1000_tx_timeout(struct net_device *netdev)
5573{
5574 struct e1000_adapter *adapter = netdev_priv(netdev);
5575
5576 /* Do the reset outside of interrupt context */
5577 adapter->tx_timeout_count++;
5578 schedule_work(&adapter->reset_task);
5579}
5580
5581static void e1000_reset_task(struct work_struct *work)
5582{
5583 struct e1000_adapter *adapter;
5584 adapter = container_of(work, struct e1000_adapter, reset_task);
5585
Jesse Brandeburg615b32a2011-02-02 10:19:45 +00005586 /* don't run the task if already down */
5587 if (test_bit(__E1000_DOWN, &adapter->state))
5588 return;
5589
Bruce Allan12d43f72012-12-05 06:26:14 +00005590 if (!(adapter->flags & FLAG_RESTART_NOW)) {
Carolyn Wybornyaffa9df2010-10-28 00:59:55 +00005591 e1000e_dump(adapter);
Bruce Allan12d43f72012-12-05 06:26:14 +00005592 e_err("Reset adapter unexpectedly\n");
Carolyn Wybornyaffa9df2010-10-28 00:59:55 +00005593 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07005594 e1000e_reinit_locked(adapter);
5595}
5596
5597/**
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00005598 * e1000_get_stats64 - Get System Network Statistics
Auke Kokbc7f75f2007-09-17 12:30:59 -07005599 * @netdev: network interface device structure
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00005600 * @stats: rtnl_link_stats64 pointer
Auke Kokbc7f75f2007-09-17 12:30:59 -07005601 *
5602 * Returns the address of the device statistics structure.
Auke Kokbc7f75f2007-09-17 12:30:59 -07005603 **/
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00005604struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev,
Bruce Allan66501f52013-02-20 04:05:55 +00005605 struct rtnl_link_stats64 *stats)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005606{
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00005607 struct e1000_adapter *adapter = netdev_priv(netdev);
5608
5609 memset(stats, 0, sizeof(struct rtnl_link_stats64));
5610 spin_lock(&adapter->stats64_lock);
5611 e1000e_update_stats(adapter);
5612 /* Fill out the OS statistics structure */
5613 stats->rx_bytes = adapter->stats.gorc;
5614 stats->rx_packets = adapter->stats.gprc;
5615 stats->tx_bytes = adapter->stats.gotc;
5616 stats->tx_packets = adapter->stats.gptc;
5617 stats->multicast = adapter->stats.mprc;
5618 stats->collisions = adapter->stats.colc;
5619
5620 /* Rx Errors */
5621
Bruce Allane921eb12012-11-28 09:28:37 +00005622 /* RLEC on some newer hardware can be incorrect so build
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00005623 * our own version based on RUC and ROC
5624 */
5625 stats->rx_errors = adapter->stats.rxerrc +
Bruce Allanf0ff4392013-02-20 04:05:39 +00005626 adapter->stats.crcerrs + adapter->stats.algnerrc +
5627 adapter->stats.ruc + adapter->stats.roc + adapter->stats.cexterr;
5628 stats->rx_length_errors = adapter->stats.ruc + adapter->stats.roc;
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00005629 stats->rx_crc_errors = adapter->stats.crcerrs;
5630 stats->rx_frame_errors = adapter->stats.algnerrc;
5631 stats->rx_missed_errors = adapter->stats.mpc;
5632
5633 /* Tx Errors */
Bruce Allanf0ff4392013-02-20 04:05:39 +00005634 stats->tx_errors = adapter->stats.ecol + adapter->stats.latecol;
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00005635 stats->tx_aborted_errors = adapter->stats.ecol;
5636 stats->tx_window_errors = adapter->stats.latecol;
5637 stats->tx_carrier_errors = adapter->stats.tncrs;
5638
5639 /* Tx Dropped needs to be maintained elsewhere */
5640
5641 spin_unlock(&adapter->stats64_lock);
5642 return stats;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005643}
5644
5645/**
5646 * e1000_change_mtu - Change the Maximum Transfer Unit
5647 * @netdev: network interface device structure
5648 * @new_mtu: new value for maximum frame size
5649 *
5650 * Returns 0 on success, negative on failure
5651 **/
5652static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
5653{
5654 struct e1000_adapter *adapter = netdev_priv(netdev);
5655 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
5656
Bruce Allan2adc55c2009-06-02 11:28:58 +00005657 /* Jumbo frame support */
Bruce Allan2e1706f2012-06-30 20:02:42 +00005658 if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) &&
5659 !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
5660 e_err("Jumbo Frames not supported.\n");
5661 return -EINVAL;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005662 }
5663
Bruce Allan2adc55c2009-06-02 11:28:58 +00005664 /* Supported frame sizes */
5665 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) ||
5666 (max_frame > adapter->max_hw_frame_size)) {
5667 e_err("Unsupported MTU setting\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07005668 return -EINVAL;
5669 }
5670
Bruce Allan2fbe4522012-04-19 03:21:47 +00005671 /* Jumbo frame workaround on 82579 and newer requires CRC be stripped */
5672 if ((adapter->hw.mac.type >= e1000_pch2lan) &&
Bruce Allana1ce6472010-09-22 17:16:40 +00005673 !(adapter->flags2 & FLAG2_CRC_STRIPPING) &&
5674 (new_mtu > ETH_DATA_LEN)) {
Bruce Allan2fbe4522012-04-19 03:21:47 +00005675 e_err("Jumbo Frames not supported on this device when CRC stripping is disabled.\n");
Bruce Allana1ce6472010-09-22 17:16:40 +00005676 return -EINVAL;
5677 }
5678
Auke Kokbc7f75f2007-09-17 12:30:59 -07005679 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
Bruce Allan1bba4382011-03-19 00:27:20 +00005680 usleep_range(1000, 2000);
Bruce Allan610c9922009-11-19 12:35:45 +00005681 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07005682 adapter->max_frame_size = max_frame;
Bruce Allan610c9922009-11-19 12:35:45 +00005683 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu);
5684 netdev->mtu = new_mtu;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005685 if (netif_running(netdev))
5686 e1000e_down(adapter);
5687
Bruce Allane921eb12012-11-28 09:28:37 +00005688 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
Auke Kokbc7f75f2007-09-17 12:30:59 -07005689 * means we reserve 2 more, this pushes us to allocate from the next
5690 * larger slab size.
Bruce Allanad680762008-03-28 09:15:03 -07005691 * i.e. RXBUFFER_2048 --> size-4096 slab
Bruce Allan97ac8ca2008-04-29 09:16:05 -07005692 * However with the new *_jumbo_rx* routines, jumbo receives will use
5693 * fragmented skbs
Bruce Allanad680762008-03-28 09:15:03 -07005694 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005695
Jesse Brandeburg99261462010-01-22 22:56:16 +00005696 if (max_frame <= 2048)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005697 adapter->rx_buffer_len = 2048;
5698 else
5699 adapter->rx_buffer_len = 4096;
5700
5701 /* adjust allocation if LPE protects us, and we aren't using SBP */
5702 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
Bruce Allan17e813e2013-02-20 04:06:01 +00005703 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
Auke Kokbc7f75f2007-09-17 12:30:59 -07005704 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN
Bruce Allan17e813e2013-02-20 04:06:01 +00005705 + ETH_FCS_LEN;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005706
Auke Kokbc7f75f2007-09-17 12:30:59 -07005707 if (netif_running(netdev))
5708 e1000e_up(adapter);
5709 else
5710 e1000e_reset(adapter);
5711
5712 clear_bit(__E1000_RESETTING, &adapter->state);
5713
5714 return 0;
5715}
5716
5717static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
5718 int cmd)
5719{
5720 struct e1000_adapter *adapter = netdev_priv(netdev);
5721 struct mii_ioctl_data *data = if_mii(ifr);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005722
Jeff Kirsher318a94d2008-03-28 09:15:16 -07005723 if (adapter->hw.phy.media_type != e1000_media_type_copper)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005724 return -EOPNOTSUPP;
5725
5726 switch (cmd) {
5727 case SIOCGMIIPHY:
5728 data->phy_id = adapter->hw.phy.addr;
5729 break;
5730 case SIOCGMIIREG:
Bruce Allanb16a0022009-11-20 23:24:30 +00005731 e1000_phy_read_status(adapter);
5732
Bruce Allan7c257692008-04-23 11:09:00 -07005733 switch (data->reg_num & 0x1F) {
5734 case MII_BMCR:
5735 data->val_out = adapter->phy_regs.bmcr;
5736 break;
5737 case MII_BMSR:
5738 data->val_out = adapter->phy_regs.bmsr;
5739 break;
5740 case MII_PHYSID1:
5741 data->val_out = (adapter->hw.phy.id >> 16);
5742 break;
5743 case MII_PHYSID2:
5744 data->val_out = (adapter->hw.phy.id & 0xFFFF);
5745 break;
5746 case MII_ADVERTISE:
5747 data->val_out = adapter->phy_regs.advertise;
5748 break;
5749 case MII_LPA:
5750 data->val_out = adapter->phy_regs.lpa;
5751 break;
5752 case MII_EXPANSION:
5753 data->val_out = adapter->phy_regs.expansion;
5754 break;
5755 case MII_CTRL1000:
5756 data->val_out = adapter->phy_regs.ctrl1000;
5757 break;
5758 case MII_STAT1000:
5759 data->val_out = adapter->phy_regs.stat1000;
5760 break;
5761 case MII_ESTATUS:
5762 data->val_out = adapter->phy_regs.estatus;
5763 break;
5764 default:
Auke Kokbc7f75f2007-09-17 12:30:59 -07005765 return -EIO;
5766 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07005767 break;
5768 case SIOCSMIIREG:
5769 default:
5770 return -EOPNOTSUPP;
5771 }
5772 return 0;
5773}
5774
Bruce Allanb67e1912012-12-27 08:32:33 +00005775/**
5776 * e1000e_hwtstamp_ioctl - control hardware time stamping
5777 * @netdev: network interface device structure
5778 * @ifreq: interface request
5779 *
5780 * Outgoing time stamping can be enabled and disabled. Play nice and
5781 * disable it when requested, although it shouldn't cause any overhead
5782 * when no packet needs it. At most one packet in the queue may be
5783 * marked for time stamping, otherwise it would be impossible to tell
5784 * for sure to which packet the hardware time stamp belongs.
5785 *
5786 * Incoming time stamping has to be configured via the hardware filters.
5787 * Not all combinations are supported, in particular event type has to be
5788 * specified. Matching the kind of event packet is not supported, with the
5789 * exception of "all V2 events regardless of level 2 or 4".
5790 **/
5791static int e1000e_hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr)
5792{
5793 struct e1000_adapter *adapter = netdev_priv(netdev);
5794 struct hwtstamp_config config;
5795 int ret_val;
5796
5797 if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
5798 return -EFAULT;
5799
5800 adapter->hwtstamp_config = config;
5801
5802 ret_val = e1000e_config_hwtstamp(adapter);
5803 if (ret_val)
5804 return ret_val;
5805
5806 config = adapter->hwtstamp_config;
5807
Bruce Alland89777b2013-01-19 01:09:58 +00005808 switch (config.rx_filter) {
5809 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
5810 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
5811 case HWTSTAMP_FILTER_PTP_V2_SYNC:
5812 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
5813 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
5814 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
5815 /* With V2 type filters which specify a Sync or Delay Request,
5816 * Path Delay Request/Response messages are also time stamped
5817 * by hardware so notify the caller the requested packets plus
5818 * some others are time stamped.
5819 */
5820 config.rx_filter = HWTSTAMP_FILTER_SOME;
5821 break;
5822 default:
5823 break;
5824 }
5825
Bruce Allanb67e1912012-12-27 08:32:33 +00005826 return copy_to_user(ifr->ifr_data, &config,
5827 sizeof(config)) ? -EFAULT : 0;
5828}
5829
Auke Kokbc7f75f2007-09-17 12:30:59 -07005830static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
5831{
5832 switch (cmd) {
5833 case SIOCGMIIPHY:
5834 case SIOCGMIIREG:
5835 case SIOCSMIIREG:
5836 return e1000_mii_ioctl(netdev, ifr, cmd);
Bruce Allanb67e1912012-12-27 08:32:33 +00005837 case SIOCSHWTSTAMP:
5838 return e1000e_hwtstamp_ioctl(netdev, ifr);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005839 default:
5840 return -EOPNOTSUPP;
5841 }
5842}
5843
Bruce Allana4f58f52009-06-02 11:29:18 +00005844static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc)
5845{
5846 struct e1000_hw *hw = &adapter->hw;
5847 u32 i, mac_reg;
Bruce Allan2b6b1682011-05-13 07:20:09 +00005848 u16 phy_reg, wuc_enable;
Bruce Allan70806a72013-01-05 05:08:37 +00005849 int retval;
Bruce Allana4f58f52009-06-02 11:29:18 +00005850
5851 /* copy MAC RARs to PHY RARs */
Bruce Alland3738bb2010-06-16 13:27:28 +00005852 e1000_copy_rx_addrs_to_phy_ich8lan(hw);
Bruce Allana4f58f52009-06-02 11:29:18 +00005853
Bruce Allan2b6b1682011-05-13 07:20:09 +00005854 retval = hw->phy.ops.acquire(hw);
5855 if (retval) {
5856 e_err("Could not acquire PHY\n");
5857 return retval;
5858 }
5859
5860 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */
5861 retval = e1000_enable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
5862 if (retval)
Bruce Allan75ce1532012-02-08 02:54:48 +00005863 goto release;
Bruce Allan2b6b1682011-05-13 07:20:09 +00005864
5865 /* copy MAC MTA to PHY MTA - only needed for pchlan */
Bruce Allana4f58f52009-06-02 11:29:18 +00005866 for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) {
5867 mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i);
Bruce Allan2b6b1682011-05-13 07:20:09 +00005868 hw->phy.ops.write_reg_page(hw, BM_MTA(i),
5869 (u16)(mac_reg & 0xFFFF));
5870 hw->phy.ops.write_reg_page(hw, BM_MTA(i) + 1,
5871 (u16)((mac_reg >> 16) & 0xFFFF));
Bruce Allana4f58f52009-06-02 11:29:18 +00005872 }
5873
5874 /* configure PHY Rx Control register */
Bruce Allan2b6b1682011-05-13 07:20:09 +00005875 hw->phy.ops.read_reg_page(&adapter->hw, BM_RCTL, &phy_reg);
Bruce Allana4f58f52009-06-02 11:29:18 +00005876 mac_reg = er32(RCTL);
5877 if (mac_reg & E1000_RCTL_UPE)
5878 phy_reg |= BM_RCTL_UPE;
5879 if (mac_reg & E1000_RCTL_MPE)
5880 phy_reg |= BM_RCTL_MPE;
5881 phy_reg &= ~(BM_RCTL_MO_MASK);
5882 if (mac_reg & E1000_RCTL_MO_3)
5883 phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT)
Bruce Allan17e813e2013-02-20 04:06:01 +00005884 << BM_RCTL_MO_SHIFT);
Bruce Allana4f58f52009-06-02 11:29:18 +00005885 if (mac_reg & E1000_RCTL_BAM)
5886 phy_reg |= BM_RCTL_BAM;
5887 if (mac_reg & E1000_RCTL_PMCF)
5888 phy_reg |= BM_RCTL_PMCF;
5889 mac_reg = er32(CTRL);
5890 if (mac_reg & E1000_CTRL_RFCE)
5891 phy_reg |= BM_RCTL_RFCE;
Bruce Allan2b6b1682011-05-13 07:20:09 +00005892 hw->phy.ops.write_reg_page(&adapter->hw, BM_RCTL, phy_reg);
Bruce Allana4f58f52009-06-02 11:29:18 +00005893
5894 /* enable PHY wakeup in MAC register */
5895 ew32(WUFC, wufc);
5896 ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN);
5897
5898 /* configure and enable PHY wakeup in PHY registers */
Bruce Allan2b6b1682011-05-13 07:20:09 +00005899 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUFC, wufc);
5900 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUC, E1000_WUC_PME_EN);
Bruce Allana4f58f52009-06-02 11:29:18 +00005901
5902 /* activate PHY wakeup */
Bruce Allan2b6b1682011-05-13 07:20:09 +00005903 wuc_enable |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT;
5904 retval = e1000_disable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
Bruce Allana4f58f52009-06-02 11:29:18 +00005905 if (retval)
5906 e_err("Could not set PHY Host Wakeup bit\n");
Bruce Allan75ce1532012-02-08 02:54:48 +00005907release:
Bruce Allan94d81862009-11-20 23:25:26 +00005908 hw->phy.ops.release(hw);
Bruce Allana4f58f52009-06-02 11:29:18 +00005909
5910 return retval;
5911}
5912
Konstantin Khlebnikov66148ba2013-03-05 09:43:04 +00005913static int __e1000_shutdown(struct pci_dev *pdev, bool runtime)
Auke Kokbc7f75f2007-09-17 12:30:59 -07005914{
5915 struct net_device *netdev = pci_get_drvdata(pdev);
5916 struct e1000_adapter *adapter = netdev_priv(netdev);
5917 struct e1000_hw *hw = &adapter->hw;
5918 u32 ctrl, ctrl_ext, rctl, status;
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00005919 /* Runtime suspend should only enable wakeup for link changes */
5920 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005921 int retval = 0;
5922
5923 netif_device_detach(netdev);
5924
5925 if (netif_running(netdev)) {
Bruce Allanbb9e44d2012-03-21 00:39:12 +00005926 int count = E1000_CHECK_RESET_COUNT;
5927
5928 while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
5929 usleep_range(10000, 20000);
5930
Auke Kokbc7f75f2007-09-17 12:30:59 -07005931 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
5932 e1000e_down(adapter);
5933 e1000_free_irq(adapter);
5934 }
Bruce Allan4662e822008-08-26 18:37:06 -07005935 e1000e_reset_interrupt_capability(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005936
Auke Kokbc7f75f2007-09-17 12:30:59 -07005937 status = er32(STATUS);
5938 if (status & E1000_STATUS_LU)
5939 wufc &= ~E1000_WUFC_LNKC;
5940
5941 if (wufc) {
5942 e1000_setup_rctl(adapter);
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00005943 e1000e_set_rx_mode(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005944
5945 /* turn on all-multi mode if wake on multicast is enabled */
5946 if (wufc & E1000_WUFC_MC) {
5947 rctl = er32(RCTL);
5948 rctl |= E1000_RCTL_MPE;
5949 ew32(RCTL, rctl);
5950 }
5951
5952 ctrl = er32(CTRL);
Bruce Allana4f58f52009-06-02 11:29:18 +00005953 ctrl |= E1000_CTRL_ADVD3WUC;
5954 if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP))
5955 ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005956 ew32(CTRL, ctrl);
5957
Jeff Kirsher318a94d2008-03-28 09:15:16 -07005958 if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
5959 adapter->hw.phy.media_type ==
5960 e1000_media_type_internal_serdes) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07005961 /* keep the laser running in D3 */
5962 ctrl_ext = er32(CTRL_EXT);
Bruce Allan93a23f42009-12-08 07:27:41 +00005963 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA;
Auke Kokbc7f75f2007-09-17 12:30:59 -07005964 ew32(CTRL_EXT, ctrl_ext);
5965 }
5966
Bruce Allan97ac8ca2008-04-29 09:16:05 -07005967 if (adapter->flags & FLAG_IS_ICH)
Bruce Allan99730e42011-05-13 07:19:48 +00005968 e1000_suspend_workarounds_ich8lan(&adapter->hw);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07005969
Auke Kokbc7f75f2007-09-17 12:30:59 -07005970 /* Allow time for pending master requests to run */
5971 e1000e_disable_pcie_master(&adapter->hw);
5972
Bruce Allan82776a42009-08-14 14:35:33 +00005973 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
Bruce Allana4f58f52009-06-02 11:29:18 +00005974 /* enable wakeup by the PHY */
5975 retval = e1000_init_phy_wakeup(adapter, wufc);
5976 if (retval)
5977 return retval;
5978 } else {
5979 /* enable wakeup by the MAC */
5980 ew32(WUFC, wufc);
5981 ew32(WUC, E1000_WUC_PME_EN);
5982 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07005983 } else {
5984 ew32(WUC, 0);
5985 ew32(WUFC, 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005986 }
5987
Auke Kokbc7f75f2007-09-17 12:30:59 -07005988 if (adapter->hw.phy.type == e1000_phy_igp_3)
5989 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw);
5990
Bruce Allane921eb12012-11-28 09:28:37 +00005991 /* Release control of h/w to f/w. If f/w is AMT enabled, this
Bruce Allanad680762008-03-28 09:15:03 -07005992 * would have already happened in close and is redundant.
5993 */
Bruce Allan31dbe5b2011-01-06 14:29:52 +00005994 e1000e_release_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005995
Dean Nelson24b41c92013-06-13 03:55:44 +00005996 pci_clear_master(pdev);
5997
Bruce Allane921eb12012-11-28 09:28:37 +00005998 /* The pci-e switch on some quad port adapters will report a
Alexander Duyck005cbdf2008-11-21 16:49:10 -08005999 * correctable error when the MAC transitions from D0 to D3. To
6000 * prevent this we need to mask off the correctable errors on the
6001 * downstream port of the pci-e switch.
Li Zhange8c254c2013-08-13 18:42:58 +00006002 *
6003 * We don't have the associated upstream bridge while assigning
6004 * the PCI device into guest. For example, the KVM on power is
6005 * one of the cases.
Alexander Duyck005cbdf2008-11-21 16:49:10 -08006006 */
6007 if (adapter->flags & FLAG_IS_QUAD_PORT) {
6008 struct pci_dev *us_dev = pdev->bus->self;
Alexander Duyck005cbdf2008-11-21 16:49:10 -08006009 u16 devctl;
6010
Li Zhange8c254c2013-08-13 18:42:58 +00006011 if (!us_dev)
6012 return 0;
6013
Jiang Liuf8c0fca2012-08-20 13:30:43 -06006014 pcie_capability_read_word(us_dev, PCI_EXP_DEVCTL, &devctl);
6015 pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL,
6016 (devctl & ~PCI_EXP_DEVCTL_CERE));
Alexander Duyck005cbdf2008-11-21 16:49:10 -08006017
Konstantin Khlebnikov66148ba2013-03-05 09:43:04 +00006018 pci_save_state(pdev);
6019 pci_prepare_to_sleep(pdev);
Alexander Duyck005cbdf2008-11-21 16:49:10 -08006020
Jiang Liuf8c0fca2012-08-20 13:30:43 -06006021 pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL, devctl);
Alexander Duyck005cbdf2008-11-21 16:49:10 -08006022 }
Konstantin Khlebnikov66148ba2013-03-05 09:43:04 +00006023
6024 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006025}
6026
Carolyn Wyborny13129d92013-08-03 01:53:54 +00006027/**
6028 * e1000e_disable_aspm - Disable ASPM states
6029 * @pdev: pointer to PCI device struct
6030 * @state: bit-mask of ASPM states to disable
6031 *
6032 * Some devices *must* have certain ASPM states disabled per hardware errata.
6033 **/
6034static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
Bruce Allan6f461f62010-04-27 03:33:04 +00006035{
Carolyn Wyborny13129d92013-08-03 01:53:54 +00006036 struct pci_dev *parent = pdev->bus->self;
6037 u16 aspm_dis_mask = 0;
6038 u16 pdev_aspmc, parent_aspmc;
Bjorn Helgaasffe0b2ff2012-12-06 06:40:07 +00006039
Carolyn Wyborny13129d92013-08-03 01:53:54 +00006040 switch (state) {
6041 case PCIE_LINK_STATE_L0S:
6042 case PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1:
6043 aspm_dis_mask |= PCI_EXP_LNKCTL_ASPM_L0S;
6044 /* fall-through - can't have L1 without L0s */
6045 case PCIE_LINK_STATE_L1:
6046 aspm_dis_mask |= PCI_EXP_LNKCTL_ASPM_L1;
6047 break;
6048 default:
6049 return;
6050 }
6051
6052 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &pdev_aspmc);
6053 pdev_aspmc &= PCI_EXP_LNKCTL_ASPMC;
6054
6055 if (parent) {
6056 pcie_capability_read_word(parent, PCI_EXP_LNKCTL,
6057 &parent_aspmc);
6058 parent_aspmc &= PCI_EXP_LNKCTL_ASPMC;
6059 }
6060
6061 /* Nothing to do if the ASPM states to be disabled already are */
6062 if (!(pdev_aspmc & aspm_dis_mask) &&
6063 (!parent || !(parent_aspmc & aspm_dis_mask)))
6064 return;
6065
6066 dev_info(&pdev->dev, "Disabling ASPM %s %s\n",
6067 (aspm_dis_mask & pdev_aspmc & PCI_EXP_LNKCTL_ASPM_L0S) ?
6068 "L0s" : "",
6069 (aspm_dis_mask & pdev_aspmc & PCI_EXP_LNKCTL_ASPM_L1) ?
6070 "L1" : "");
6071
6072#ifdef CONFIG_PCIEASPM
6073 pci_disable_link_state_locked(pdev, state);
6074
6075 /* Double-check ASPM control. If not disabled by the above, the
6076 * BIOS is preventing that from happening (or CONFIG_PCIEASPM is
6077 * not enabled); override by writing PCI config space directly.
6078 */
6079 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &pdev_aspmc);
6080 pdev_aspmc &= PCI_EXP_LNKCTL_ASPMC;
6081
6082 if (!(aspm_dis_mask & pdev_aspmc))
6083 return;
6084#endif
Bjorn Helgaasffe0b2ff2012-12-06 06:40:07 +00006085
Bruce Allane921eb12012-11-28 09:28:37 +00006086 /* Both device and parent should have the same ASPM setting.
Bruce Allan6f461f62010-04-27 03:33:04 +00006087 * Disable ASPM in downstream component first and then upstream.
Auke Kok1eae4eb2007-10-31 15:22:00 -07006088 */
Carolyn Wyborny13129d92013-08-03 01:53:54 +00006089 pcie_capability_clear_word(pdev, PCI_EXP_LNKCTL, aspm_dis_mask);
Bruce Allan6f461f62010-04-27 03:33:04 +00006090
Carolyn Wyborny13129d92013-08-03 01:53:54 +00006091 if (parent)
6092 pcie_capability_clear_word(parent, PCI_EXP_LNKCTL,
6093 aspm_dis_mask);
Auke Kok1eae4eb2007-10-31 15:22:00 -07006094}
6095
Rafael J. Wysockiaa338602011-02-11 00:06:54 +01006096#ifdef CONFIG_PM
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006097static bool e1000e_pm_ready(struct e1000_adapter *adapter)
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00006098{
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006099 return !!adapter->tx_ring->buffer_info;
Rafael J. Wysocki4f9de722009-04-15 17:43:43 +00006100}
6101
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006102static int __e1000_resume(struct pci_dev *pdev)
Auke Kokbc7f75f2007-09-17 12:30:59 -07006103{
6104 struct net_device *netdev = pci_get_drvdata(pdev);
6105 struct e1000_adapter *adapter = netdev_priv(netdev);
6106 struct e1000_hw *hw = &adapter->hw;
Bruce Allan78cd29d2011-03-24 03:09:03 +00006107 u16 aspm_disable_flag = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006108 u32 err;
6109
Bruce Allan78cd29d2011-03-24 03:09:03 +00006110 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
6111 aspm_disable_flag = PCIE_LINK_STATE_L0S;
6112 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
6113 aspm_disable_flag |= PCIE_LINK_STATE_L1;
6114 if (aspm_disable_flag)
6115 e1000e_disable_aspm(pdev, aspm_disable_flag);
6116
Konstantin Khlebnikov66148ba2013-03-05 09:43:04 +00006117 pci_set_master(pdev);
Taku Izumi6e4f6f62008-06-20 11:57:02 +09006118
Bruce Allan4662e822008-08-26 18:37:06 -07006119 e1000e_set_interrupt_capability(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006120 if (netif_running(netdev)) {
6121 err = e1000_request_irq(adapter);
6122 if (err)
6123 return err;
6124 }
6125
Bruce Allan2fbe4522012-04-19 03:21:47 +00006126 if (hw->mac.type >= e1000_pch2lan)
Bruce Allan99730e42011-05-13 07:19:48 +00006127 e1000_resume_workarounds_pchlan(&adapter->hw);
6128
Auke Kokbc7f75f2007-09-17 12:30:59 -07006129 e1000e_power_up_phy(adapter);
Bruce Allana4f58f52009-06-02 11:29:18 +00006130
6131 /* report the system wakeup cause from S3/S4 */
6132 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
6133 u16 phy_data;
6134
6135 e1e_rphy(&adapter->hw, BM_WUS, &phy_data);
6136 if (phy_data) {
6137 e_info("PHY Wakeup cause - %s\n",
Bruce Allan17e813e2013-02-20 04:06:01 +00006138 phy_data & E1000_WUS_EX ? "Unicast Packet" :
6139 phy_data & E1000_WUS_MC ? "Multicast Packet" :
6140 phy_data & E1000_WUS_BC ? "Broadcast Packet" :
6141 phy_data & E1000_WUS_MAG ? "Magic Packet" :
6142 phy_data & E1000_WUS_LNKC ?
6143 "Link Status Change" : "other");
Bruce Allana4f58f52009-06-02 11:29:18 +00006144 }
6145 e1e_wphy(&adapter->hw, BM_WUS, ~0);
6146 } else {
6147 u32 wus = er32(WUS);
6148 if (wus) {
6149 e_info("MAC Wakeup cause - %s\n",
Bruce Allan17e813e2013-02-20 04:06:01 +00006150 wus & E1000_WUS_EX ? "Unicast Packet" :
6151 wus & E1000_WUS_MC ? "Multicast Packet" :
6152 wus & E1000_WUS_BC ? "Broadcast Packet" :
6153 wus & E1000_WUS_MAG ? "Magic Packet" :
6154 wus & E1000_WUS_LNKC ? "Link Status Change" :
6155 "other");
Bruce Allana4f58f52009-06-02 11:29:18 +00006156 }
6157 ew32(WUS, ~0);
6158 }
6159
Auke Kokbc7f75f2007-09-17 12:30:59 -07006160 e1000e_reset(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006161
Bruce Allancd791612010-05-10 14:59:51 +00006162 e1000_init_manageability_pt(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006163
6164 if (netif_running(netdev))
6165 e1000e_up(adapter);
6166
6167 netif_device_attach(netdev);
6168
Bruce Allane921eb12012-11-28 09:28:37 +00006169 /* If the controller has AMT, do not set DRV_LOAD until the interface
Auke Kokbc7f75f2007-09-17 12:30:59 -07006170 * is up. For all other cases, let the f/w know that the h/w is now
Bruce Allanad680762008-03-28 09:15:03 -07006171 * under the control of the driver.
6172 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07006173 if (!(adapter->flags & FLAG_HAS_AMT))
Bruce Allan31dbe5b2011-01-06 14:29:52 +00006174 e1000e_get_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006175
6176 return 0;
6177}
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006178
Rafael J. Wysockia0340162010-03-17 23:12:24 -07006179#ifdef CONFIG_PM_SLEEP
6180static int e1000_suspend(struct device *dev)
6181{
6182 struct pci_dev *pdev = to_pci_dev(dev);
Rafael J. Wysockia0340162010-03-17 23:12:24 -07006183
Konstantin Khlebnikov66148ba2013-03-05 09:43:04 +00006184 return __e1000_shutdown(pdev, false);
Rafael J. Wysockia0340162010-03-17 23:12:24 -07006185}
6186
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006187static int e1000_resume(struct device *dev)
6188{
6189 struct pci_dev *pdev = to_pci_dev(dev);
6190 struct net_device *netdev = pci_get_drvdata(pdev);
6191 struct e1000_adapter *adapter = netdev_priv(netdev);
6192
6193 if (e1000e_pm_ready(adapter))
6194 adapter->idle_check = true;
6195
6196 return __e1000_resume(pdev);
6197}
Rafael J. Wysockia0340162010-03-17 23:12:24 -07006198#endif /* CONFIG_PM_SLEEP */
6199
6200#ifdef CONFIG_PM_RUNTIME
6201static int e1000_runtime_suspend(struct device *dev)
6202{
6203 struct pci_dev *pdev = to_pci_dev(dev);
6204 struct net_device *netdev = pci_get_drvdata(pdev);
6205 struct e1000_adapter *adapter = netdev_priv(netdev);
6206
Konstantin Khlebnikov66148ba2013-03-05 09:43:04 +00006207 if (!e1000e_pm_ready(adapter))
6208 return 0;
Rafael J. Wysockia0340162010-03-17 23:12:24 -07006209
Konstantin Khlebnikov66148ba2013-03-05 09:43:04 +00006210 return __e1000_shutdown(pdev, true);
Rafael J. Wysockia0340162010-03-17 23:12:24 -07006211}
6212
6213static int e1000_idle(struct device *dev)
6214{
6215 struct pci_dev *pdev = to_pci_dev(dev);
6216 struct net_device *netdev = pci_get_drvdata(pdev);
6217 struct e1000_adapter *adapter = netdev_priv(netdev);
6218
6219 if (!e1000e_pm_ready(adapter))
6220 return 0;
6221
6222 if (adapter->idle_check) {
6223 adapter->idle_check = false;
6224 if (!e1000e_has_link(adapter))
6225 pm_schedule_suspend(dev, MSEC_PER_SEC);
6226 }
6227
6228 return -EBUSY;
6229}
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006230
6231static int e1000_runtime_resume(struct device *dev)
6232{
6233 struct pci_dev *pdev = to_pci_dev(dev);
6234 struct net_device *netdev = pci_get_drvdata(pdev);
6235 struct e1000_adapter *adapter = netdev_priv(netdev);
6236
6237 if (!e1000e_pm_ready(adapter))
6238 return 0;
6239
6240 adapter->idle_check = !dev->power.runtime_auto;
6241 return __e1000_resume(pdev);
6242}
Rafael J. Wysockia0340162010-03-17 23:12:24 -07006243#endif /* CONFIG_PM_RUNTIME */
Rafael J. Wysockiaa338602011-02-11 00:06:54 +01006244#endif /* CONFIG_PM */
Auke Kokbc7f75f2007-09-17 12:30:59 -07006245
6246static void e1000_shutdown(struct pci_dev *pdev)
6247{
Konstantin Khlebnikov66148ba2013-03-05 09:43:04 +00006248 __e1000_shutdown(pdev, false);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006249}
6250
6251#ifdef CONFIG_NET_POLL_CONTROLLER
Dongdong Deng147b2c82010-11-16 19:50:15 -08006252
Bruce Allan8bb62862013-01-16 08:46:49 +00006253static irqreturn_t e1000_intr_msix(int __always_unused irq, void *data)
Dongdong Deng147b2c82010-11-16 19:50:15 -08006254{
6255 struct net_device *netdev = data;
6256 struct e1000_adapter *adapter = netdev_priv(netdev);
Dongdong Deng147b2c82010-11-16 19:50:15 -08006257
6258 if (adapter->msix_entries) {
Bruce Allan90da0662011-01-06 07:02:53 +00006259 int vector, msix_irq;
6260
Dongdong Deng147b2c82010-11-16 19:50:15 -08006261 vector = 0;
6262 msix_irq = adapter->msix_entries[vector].vector;
6263 disable_irq(msix_irq);
6264 e1000_intr_msix_rx(msix_irq, netdev);
6265 enable_irq(msix_irq);
6266
6267 vector++;
6268 msix_irq = adapter->msix_entries[vector].vector;
6269 disable_irq(msix_irq);
6270 e1000_intr_msix_tx(msix_irq, netdev);
6271 enable_irq(msix_irq);
6272
6273 vector++;
6274 msix_irq = adapter->msix_entries[vector].vector;
6275 disable_irq(msix_irq);
6276 e1000_msix_other(msix_irq, netdev);
6277 enable_irq(msix_irq);
6278 }
6279
6280 return IRQ_HANDLED;
6281}
6282
Bruce Allane921eb12012-11-28 09:28:37 +00006283/**
6284 * e1000_netpoll
6285 * @netdev: network interface device structure
6286 *
Auke Kokbc7f75f2007-09-17 12:30:59 -07006287 * Polling 'interrupt' - used by things like netconsole to send skbs
6288 * without having to re-enable interrupts. It's not called while
6289 * the interrupt routine is executing.
6290 */
6291static void e1000_netpoll(struct net_device *netdev)
6292{
6293 struct e1000_adapter *adapter = netdev_priv(netdev);
6294
Dongdong Deng147b2c82010-11-16 19:50:15 -08006295 switch (adapter->int_mode) {
6296 case E1000E_INT_MODE_MSIX:
6297 e1000_intr_msix(adapter->pdev->irq, netdev);
6298 break;
6299 case E1000E_INT_MODE_MSI:
6300 disable_irq(adapter->pdev->irq);
6301 e1000_intr_msi(adapter->pdev->irq, netdev);
6302 enable_irq(adapter->pdev->irq);
6303 break;
Bruce Allane80bd1d2013-05-01 01:19:46 +00006304 default: /* E1000E_INT_MODE_LEGACY */
Dongdong Deng147b2c82010-11-16 19:50:15 -08006305 disable_irq(adapter->pdev->irq);
6306 e1000_intr(adapter->pdev->irq, netdev);
6307 enable_irq(adapter->pdev->irq);
6308 break;
6309 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07006310}
6311#endif
6312
6313/**
6314 * e1000_io_error_detected - called when PCI error is detected
6315 * @pdev: Pointer to PCI device
6316 * @state: The current pci connection state
6317 *
6318 * This function is called after a PCI bus error affecting
6319 * this device has been detected.
6320 */
6321static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
6322 pci_channel_state_t state)
6323{
6324 struct net_device *netdev = pci_get_drvdata(pdev);
6325 struct e1000_adapter *adapter = netdev_priv(netdev);
6326
6327 netif_device_detach(netdev);
6328
Mike Masonc93b5a72009-06-30 12:45:53 +00006329 if (state == pci_channel_io_perm_failure)
6330 return PCI_ERS_RESULT_DISCONNECT;
6331
Auke Kokbc7f75f2007-09-17 12:30:59 -07006332 if (netif_running(netdev))
6333 e1000e_down(adapter);
6334 pci_disable_device(pdev);
6335
6336 /* Request a slot slot reset. */
6337 return PCI_ERS_RESULT_NEED_RESET;
6338}
6339
6340/**
6341 * e1000_io_slot_reset - called after the pci bus has been reset.
6342 * @pdev: Pointer to PCI device
6343 *
6344 * Restart the card from scratch, as if from a cold-boot. Implementation
6345 * resembles the first-half of the e1000_resume routine.
6346 */
6347static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
6348{
6349 struct net_device *netdev = pci_get_drvdata(pdev);
6350 struct e1000_adapter *adapter = netdev_priv(netdev);
6351 struct e1000_hw *hw = &adapter->hw;
Bruce Allan78cd29d2011-03-24 03:09:03 +00006352 u16 aspm_disable_flag = 0;
Taku Izumi6e4f6f62008-06-20 11:57:02 +09006353 int err;
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00006354 pci_ers_result_t result;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006355
Bruce Allan78cd29d2011-03-24 03:09:03 +00006356 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
6357 aspm_disable_flag = PCIE_LINK_STATE_L0S;
Bruce Allan6f461f62010-04-27 03:33:04 +00006358 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
Bruce Allan78cd29d2011-03-24 03:09:03 +00006359 aspm_disable_flag |= PCIE_LINK_STATE_L1;
6360 if (aspm_disable_flag)
6361 e1000e_disable_aspm(pdev, aspm_disable_flag);
6362
Bruce Allanf0f422e2008-08-04 17:21:53 -07006363 err = pci_enable_device_mem(pdev);
Taku Izumi6e4f6f62008-06-20 11:57:02 +09006364 if (err) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07006365 dev_err(&pdev->dev,
6366 "Cannot re-enable PCI device after reset.\n");
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00006367 result = PCI_ERS_RESULT_DISCONNECT;
6368 } else {
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006369 pdev->state_saved = true;
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00006370 pci_restore_state(pdev);
Konstantin Khlebnikov66148ba2013-03-05 09:43:04 +00006371 pci_set_master(pdev);
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00006372
6373 pci_enable_wake(pdev, PCI_D3hot, 0);
6374 pci_enable_wake(pdev, PCI_D3cold, 0);
6375
6376 e1000e_reset(adapter);
6377 ew32(WUS, ~0);
6378 result = PCI_ERS_RESULT_RECOVERED;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006379 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07006380
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00006381 pci_cleanup_aer_uncorrect_error_status(pdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006382
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00006383 return result;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006384}
6385
6386/**
6387 * e1000_io_resume - called when traffic can start flowing again.
6388 * @pdev: Pointer to PCI device
6389 *
6390 * This callback is called when the error recovery driver tells us that
6391 * its OK to resume normal operation. Implementation resembles the
6392 * second-half of the e1000_resume routine.
6393 */
6394static void e1000_io_resume(struct pci_dev *pdev)
6395{
6396 struct net_device *netdev = pci_get_drvdata(pdev);
6397 struct e1000_adapter *adapter = netdev_priv(netdev);
6398
Bruce Allancd791612010-05-10 14:59:51 +00006399 e1000_init_manageability_pt(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006400
6401 if (netif_running(netdev)) {
6402 if (e1000e_up(adapter)) {
6403 dev_err(&pdev->dev,
6404 "can't bring device back up after reset\n");
6405 return;
6406 }
6407 }
6408
6409 netif_device_attach(netdev);
6410
Bruce Allane921eb12012-11-28 09:28:37 +00006411 /* If the controller has AMT, do not set DRV_LOAD until the interface
Auke Kokbc7f75f2007-09-17 12:30:59 -07006412 * is up. For all other cases, let the f/w know that the h/w is now
Bruce Allanad680762008-03-28 09:15:03 -07006413 * under the control of the driver.
6414 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07006415 if (!(adapter->flags & FLAG_HAS_AMT))
Bruce Allan31dbe5b2011-01-06 14:29:52 +00006416 e1000e_get_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006417}
6418
6419static void e1000_print_device_info(struct e1000_adapter *adapter)
6420{
6421 struct e1000_hw *hw = &adapter->hw;
6422 struct net_device *netdev = adapter->netdev;
Bruce Allan073287c2010-11-24 06:01:51 +00006423 u32 ret_val;
6424 u8 pba_str[E1000_PBANUM_LENGTH];
Auke Kokbc7f75f2007-09-17 12:30:59 -07006425
6426 /* print bus type/speed/width info */
Bruce Allana5cc7642011-03-19 00:31:23 +00006427 e_info("(PCI Express:2.5GT/s:%s) %pM\n",
Jeff Kirsher44defeb2008-08-04 17:20:41 -07006428 /* bus width */
6429 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
Bruce Allanf0ff4392013-02-20 04:05:39 +00006430 "Width x1"),
Jeff Kirsher44defeb2008-08-04 17:20:41 -07006431 /* MAC address */
Johannes Berg7c510e42008-10-27 17:47:26 -07006432 netdev->dev_addr);
Jeff Kirsher44defeb2008-08-04 17:20:41 -07006433 e_info("Intel(R) PRO/%s Network Connection\n",
6434 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000");
Bruce Allan073287c2010-11-24 06:01:51 +00006435 ret_val = e1000_read_pba_string_generic(hw, pba_str,
6436 E1000_PBANUM_LENGTH);
6437 if (ret_val)
Bruce Allanf2315bf2011-12-16 00:46:59 +00006438 strlcpy((char *)pba_str, "Unknown", sizeof(pba_str));
Bruce Allan073287c2010-11-24 06:01:51 +00006439 e_info("MAC: %d, PHY: %d, PBA No: %s\n",
6440 hw->mac.type, hw->phy.type, pba_str);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006441}
6442
Auke Kok10aa4c02008-08-04 17:21:20 -07006443static void e1000_eeprom_checks(struct e1000_adapter *adapter)
6444{
6445 struct e1000_hw *hw = &adapter->hw;
6446 int ret_val;
6447 u16 buf = 0;
6448
6449 if (hw->mac.type != e1000_82573)
6450 return;
6451
6452 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf);
Bruce Allane885d762012-01-31 06:37:32 +00006453 le16_to_cpus(&buf);
6454 if (!ret_val && (!(buf & (1 << 0)))) {
Auke Kok10aa4c02008-08-04 17:21:20 -07006455 /* Deep Smart Power Down (DSPD) */
Frans Pop6c2a9ef2008-09-22 14:52:22 -07006456 dev_warn(&adapter->pdev->dev,
6457 "Warning: detected DSPD enabled in EEPROM\n");
Auke Kok10aa4c02008-08-04 17:21:20 -07006458 }
Auke Kok10aa4c02008-08-04 17:21:20 -07006459}
6460
Michał Mirosławc8f44af2011-11-15 15:29:55 +00006461static int e1000_set_features(struct net_device *netdev,
Bruce Allan70495a52012-01-11 01:26:50 +00006462 netdev_features_t features)
Bruce Allandc221292011-08-19 03:23:48 +00006463{
6464 struct e1000_adapter *adapter = netdev_priv(netdev);
Michał Mirosławc8f44af2011-11-15 15:29:55 +00006465 netdev_features_t changed = features ^ netdev->features;
Bruce Allandc221292011-08-19 03:23:48 +00006466
6467 if (changed & (NETIF_F_TSO | NETIF_F_TSO6))
6468 adapter->flags |= FLAG_TSO_FORCE;
6469
Patrick McHardyf6469682013-04-19 02:04:27 +00006470 if (!(changed & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX |
Ben Greearcf955e62012-02-11 15:39:51 +00006471 NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_RXFCS |
6472 NETIF_F_RXALL)))
Bruce Allandc221292011-08-19 03:23:48 +00006473 return 0;
6474
Ben Greear01840392012-02-11 15:39:25 +00006475 if (changed & NETIF_F_RXFCS) {
6476 if (features & NETIF_F_RXFCS) {
6477 adapter->flags2 &= ~FLAG2_CRC_STRIPPING;
6478 } else {
6479 /* We need to take it back to defaults, which might mean
6480 * stripping is still disabled at the adapter level.
6481 */
6482 if (adapter->flags2 & FLAG2_DFLT_CRC_STRIPPING)
6483 adapter->flags2 |= FLAG2_CRC_STRIPPING;
6484 else
6485 adapter->flags2 &= ~FLAG2_CRC_STRIPPING;
6486 }
6487 }
6488
Bruce Allan70495a52012-01-11 01:26:50 +00006489 netdev->features = features;
6490
Bruce Allandc221292011-08-19 03:23:48 +00006491 if (netif_running(netdev))
6492 e1000e_reinit_locked(adapter);
6493 else
6494 e1000e_reset(adapter);
6495
6496 return 0;
6497}
6498
Stephen Hemminger651c2462008-11-19 21:57:48 -08006499static const struct net_device_ops e1000e_netdev_ops = {
6500 .ndo_open = e1000_open,
6501 .ndo_stop = e1000_close,
Stephen Hemminger00829822008-11-20 20:14:53 -08006502 .ndo_start_xmit = e1000_xmit_frame,
Jeff Kirsher67fd4fc2011-01-07 05:12:09 +00006503 .ndo_get_stats64 = e1000e_get_stats64,
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00006504 .ndo_set_rx_mode = e1000e_set_rx_mode,
Stephen Hemminger651c2462008-11-19 21:57:48 -08006505 .ndo_set_mac_address = e1000_set_mac,
6506 .ndo_change_mtu = e1000_change_mtu,
6507 .ndo_do_ioctl = e1000_ioctl,
6508 .ndo_tx_timeout = e1000_tx_timeout,
6509 .ndo_validate_addr = eth_validate_addr,
6510
Stephen Hemminger651c2462008-11-19 21:57:48 -08006511 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid,
6512 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid,
6513#ifdef CONFIG_NET_POLL_CONTROLLER
6514 .ndo_poll_controller = e1000_netpoll,
6515#endif
Bruce Allandc221292011-08-19 03:23:48 +00006516 .ndo_set_features = e1000_set_features,
Stephen Hemminger651c2462008-11-19 21:57:48 -08006517};
6518
Auke Kokbc7f75f2007-09-17 12:30:59 -07006519/**
6520 * e1000_probe - Device Initialization Routine
6521 * @pdev: PCI device information struct
6522 * @ent: entry in e1000_pci_tbl
6523 *
6524 * Returns 0 on success, negative on failure
6525 *
6526 * e1000_probe initializes an adapter identified by a pci_dev structure.
6527 * The OS initialization, configuring of the adapter private structure,
6528 * and a hardware reset occur.
6529 **/
Greg Kroah-Hartman1dd06ae2012-12-06 14:30:56 +00006530static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
Auke Kokbc7f75f2007-09-17 12:30:59 -07006531{
6532 struct net_device *netdev;
6533 struct e1000_adapter *adapter;
6534 struct e1000_hw *hw;
6535 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data];
Becky Brucef47e81f2008-05-01 18:03:11 -05006536 resource_size_t mmio_start, mmio_len;
6537 resource_size_t flash_start, flash_len;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006538 static int cards_found;
Bruce Allan78cd29d2011-03-24 03:09:03 +00006539 u16 aspm_disable_flag = 0;
Bruce Allan17e813e2013-02-20 04:06:01 +00006540 int bars, i, err, pci_using_dac;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006541 u16 eeprom_data = 0;
6542 u16 eeprom_apme_mask = E1000_EEPROM_APME;
6543
Bruce Allan78cd29d2011-03-24 03:09:03 +00006544 if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S)
6545 aspm_disable_flag = PCIE_LINK_STATE_L0S;
Bruce Allan6f461f62010-04-27 03:33:04 +00006546 if (ei->flags2 & FLAG2_DISABLE_ASPM_L1)
Bruce Allan78cd29d2011-03-24 03:09:03 +00006547 aspm_disable_flag |= PCIE_LINK_STATE_L1;
6548 if (aspm_disable_flag)
6549 e1000e_disable_aspm(pdev, aspm_disable_flag);
Taku Izumi6e4f6f62008-06-20 11:57:02 +09006550
Bruce Allanf0f422e2008-08-04 17:21:53 -07006551 err = pci_enable_device_mem(pdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006552 if (err)
6553 return err;
6554
6555 pci_using_dac = 0;
Nick Nunley0be3f552010-04-27 13:09:05 +00006556 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006557 if (!err) {
Nick Nunley0be3f552010-04-27 13:09:05 +00006558 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006559 if (!err)
6560 pci_using_dac = 1;
6561 } else {
Nick Nunley0be3f552010-04-27 13:09:05 +00006562 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006563 if (err) {
Nick Nunley0be3f552010-04-27 13:09:05 +00006564 err = dma_set_coherent_mask(&pdev->dev,
6565 DMA_BIT_MASK(32));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006566 if (err) {
Bruce Allanf0ff4392013-02-20 04:05:39 +00006567 dev_err(&pdev->dev,
6568 "No usable DMA configuration, aborting\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07006569 goto err_dma;
6570 }
6571 }
6572 }
6573
Bruce Allan17e813e2013-02-20 04:06:01 +00006574 bars = pci_select_bars(pdev, IORESOURCE_MEM);
6575 err = pci_request_selected_regions_exclusive(pdev, bars,
6576 e1000e_driver_name);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006577 if (err)
6578 goto err_pci_reg;
6579
Xiaotian Feng68eac462009-08-14 14:35:52 +00006580 /* AER (Advanced Error Reporting) hooks */
Frans Pop19d5afd2009-10-02 10:04:12 -07006581 pci_enable_pcie_error_reporting(pdev);
Xiaotian Feng68eac462009-08-14 14:35:52 +00006582
Auke Kokbc7f75f2007-09-17 12:30:59 -07006583 pci_set_master(pdev);
Bruce Allan438b3652008-11-21 16:51:33 -08006584 /* PCI config space info */
6585 err = pci_save_state(pdev);
6586 if (err)
6587 goto err_alloc_etherdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006588
6589 err = -ENOMEM;
6590 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
6591 if (!netdev)
6592 goto err_alloc_etherdev;
6593
Auke Kokbc7f75f2007-09-17 12:30:59 -07006594 SET_NETDEV_DEV(netdev, &pdev->dev);
6595
Tom Herbertf85e4df2010-05-05 14:03:32 +00006596 netdev->irq = pdev->irq;
6597
Auke Kokbc7f75f2007-09-17 12:30:59 -07006598 pci_set_drvdata(pdev, netdev);
6599 adapter = netdev_priv(netdev);
6600 hw = &adapter->hw;
6601 adapter->netdev = netdev;
6602 adapter->pdev = pdev;
6603 adapter->ei = ei;
6604 adapter->pba = ei->pba;
6605 adapter->flags = ei->flags;
Jeff Kirshereb7c3ad2008-11-14 06:45:23 +00006606 adapter->flags2 = ei->flags2;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006607 adapter->hw.adapter = adapter;
6608 adapter->hw.mac.type = ei->mac;
Bruce Allan2adc55c2009-06-02 11:28:58 +00006609 adapter->max_hw_frame_size = ei->max_hw_frame_size;
stephen hemmingerb3f4d592012-03-13 06:04:20 +00006610 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006611
6612 mmio_start = pci_resource_start(pdev, 0);
6613 mmio_len = pci_resource_len(pdev, 0);
6614
6615 err = -EIO;
6616 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
6617 if (!adapter->hw.hw_addr)
6618 goto err_ioremap;
6619
6620 if ((adapter->flags & FLAG_HAS_FLASH) &&
6621 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
6622 flash_start = pci_resource_start(pdev, 1);
6623 flash_len = pci_resource_len(pdev, 1);
6624 adapter->hw.flash_address = ioremap(flash_start, flash_len);
6625 if (!adapter->hw.flash_address)
6626 goto err_flashmap;
6627 }
6628
Bruce Alland495bcb2013-03-20 07:23:11 +00006629 /* Set default EEE advertisement */
6630 if (adapter->flags2 & FLAG2_HAS_EEE)
6631 adapter->eee_advert = MDIO_EEE_100TX | MDIO_EEE_1000T;
6632
Auke Kokbc7f75f2007-09-17 12:30:59 -07006633 /* construct the net_device struct */
Bruce Allane80bd1d2013-05-01 01:19:46 +00006634 netdev->netdev_ops = &e1000e_netdev_ops;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006635 e1000e_set_ethtool_ops(netdev);
Bruce Allane80bd1d2013-05-01 01:19:46 +00006636 netdev->watchdog_timeo = 5 * HZ;
Bruce Allanc58c8a72012-03-20 03:48:19 +00006637 netif_napi_add(netdev, &adapter->napi, e1000e_poll, 64);
Bruce Allanf2315bf2011-12-16 00:46:59 +00006638 strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006639
6640 netdev->mem_start = mmio_start;
6641 netdev->mem_end = mmio_start + mmio_len;
6642
6643 adapter->bd_number = cards_found++;
6644
Bruce Allan4662e822008-08-26 18:37:06 -07006645 e1000e_check_options(adapter);
6646
Auke Kokbc7f75f2007-09-17 12:30:59 -07006647 /* setup adapter struct */
6648 err = e1000_sw_init(adapter);
6649 if (err)
6650 goto err_sw_init;
6651
Auke Kokbc7f75f2007-09-17 12:30:59 -07006652 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
6653 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
6654 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
6655
Jeff Kirsher69e3fd82008-04-02 13:48:18 -07006656 err = ei->get_variants(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006657 if (err)
6658 goto err_hw_init;
6659
Bruce Allan4a770352008-10-01 17:18:35 -07006660 if ((adapter->flags & FLAG_IS_ICH) &&
6661 (adapter->flags & FLAG_READ_ONLY_NVM))
6662 e1000e_write_protect_nvm_ich8lan(&adapter->hw);
6663
Auke Kokbc7f75f2007-09-17 12:30:59 -07006664 hw->mac.ops.get_bus_info(&adapter->hw);
6665
Jeff Kirsher318a94d2008-03-28 09:15:16 -07006666 adapter->hw.phy.autoneg_wait_to_complete = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006667
6668 /* Copper options */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07006669 if (adapter->hw.phy.media_type == e1000_media_type_copper) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07006670 adapter->hw.phy.mdix = AUTO_ALL_MODES;
6671 adapter->hw.phy.disable_polarity_correction = 0;
6672 adapter->hw.phy.ms_type = e1000_ms_hw_default;
6673 }
6674
Bruce Allan470a5422012-05-26 06:08:48 +00006675 if (hw->phy.ops.check_reset_block && hw->phy.ops.check_reset_block(hw))
Bruce Allan185095f2012-06-07 02:23:37 +00006676 dev_info(&pdev->dev,
6677 "PHY reset is blocked due to SOL/IDER session.\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07006678
Bruce Allandc221292011-08-19 03:23:48 +00006679 /* Set initial default active device features */
6680 netdev->features = (NETIF_F_SG |
Patrick McHardyf6469682013-04-19 02:04:27 +00006681 NETIF_F_HW_VLAN_CTAG_RX |
6682 NETIF_F_HW_VLAN_CTAG_TX |
Bruce Allandc221292011-08-19 03:23:48 +00006683 NETIF_F_TSO |
6684 NETIF_F_TSO6 |
Bruce Allan70495a52012-01-11 01:26:50 +00006685 NETIF_F_RXHASH |
Bruce Allandc221292011-08-19 03:23:48 +00006686 NETIF_F_RXCSUM |
6687 NETIF_F_HW_CSUM);
6688
6689 /* Set user-changeable features (subset of all device features) */
6690 netdev->hw_features = netdev->features;
Ben Greear01840392012-02-11 15:39:25 +00006691 netdev->hw_features |= NETIF_F_RXFCS;
Ben Greear943146d2012-02-11 15:39:40 +00006692 netdev->priv_flags |= IFF_SUPP_NOFCS;
Ben Greearcf955e62012-02-11 15:39:51 +00006693 netdev->hw_features |= NETIF_F_RXALL;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006694
6695 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
Patrick McHardyf6469682013-04-19 02:04:27 +00006696 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006697
Bruce Allandc221292011-08-19 03:23:48 +00006698 netdev->vlan_features |= (NETIF_F_SG |
6699 NETIF_F_TSO |
6700 NETIF_F_TSO6 |
6701 NETIF_F_HW_CSUM);
Jeff Kirshera5136e22008-06-05 04:07:28 -07006702
Jesse Brandeburgef9b9652011-11-04 05:47:06 +00006703 netdev->priv_flags |= IFF_UNICAST_FLT;
6704
Yi Zou7b872a52010-09-22 17:57:58 +00006705 if (pci_using_dac) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07006706 netdev->features |= NETIF_F_HIGHDMA;
Yi Zou7b872a52010-09-22 17:57:58 +00006707 netdev->vlan_features |= NETIF_F_HIGHDMA;
6708 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07006709
Auke Kokbc7f75f2007-09-17 12:30:59 -07006710 if (e1000e_enable_mng_pass_thru(&adapter->hw))
6711 adapter->flags |= FLAG_MNG_PT_ENABLED;
6712
Bruce Allane921eb12012-11-28 09:28:37 +00006713 /* before reading the NVM, reset the controller to
Bruce Allanad680762008-03-28 09:15:03 -07006714 * put the device in a known good starting state
6715 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07006716 adapter->hw.mac.ops.reset_hw(&adapter->hw);
6717
Bruce Allane921eb12012-11-28 09:28:37 +00006718 /* systems with ASPM and others may see the checksum fail on the first
Auke Kokbc7f75f2007-09-17 12:30:59 -07006719 * attempt. Let's give it a few tries
6720 */
6721 for (i = 0;; i++) {
6722 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0)
6723 break;
6724 if (i == 2) {
Bruce Allan185095f2012-06-07 02:23:37 +00006725 dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07006726 err = -EIO;
6727 goto err_eeprom;
6728 }
6729 }
6730
Auke Kok10aa4c02008-08-04 17:21:20 -07006731 e1000_eeprom_checks(adapter);
6732
Bruce Allan608f8a02010-01-13 02:04:58 +00006733 /* copy the MAC address */
Auke Kokbc7f75f2007-09-17 12:30:59 -07006734 if (e1000e_read_mac_addr(&adapter->hw))
Bruce Allan185095f2012-06-07 02:23:37 +00006735 dev_err(&pdev->dev,
6736 "NVM Read Error while reading MAC address\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07006737
6738 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006739
Jiri Pirkoaaeb6cd2013-01-08 01:38:26 +00006740 if (!is_valid_ether_addr(netdev->dev_addr)) {
Bruce Allan185095f2012-06-07 02:23:37 +00006741 dev_err(&pdev->dev, "Invalid MAC Address: %pM\n",
Jiri Pirkoaaeb6cd2013-01-08 01:38:26 +00006742 netdev->dev_addr);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006743 err = -EIO;
6744 goto err_eeprom;
6745 }
6746
6747 init_timer(&adapter->watchdog_timer);
Joe Perchesc061b182010-08-23 18:20:03 +00006748 adapter->watchdog_timer.function = e1000_watchdog;
Bruce Allan53aa82d2013-02-20 04:06:06 +00006749 adapter->watchdog_timer.data = (unsigned long)adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006750
6751 init_timer(&adapter->phy_info_timer);
Joe Perchesc061b182010-08-23 18:20:03 +00006752 adapter->phy_info_timer.function = e1000_update_phy_info;
Bruce Allan53aa82d2013-02-20 04:06:06 +00006753 adapter->phy_info_timer.data = (unsigned long)adapter;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006754
6755 INIT_WORK(&adapter->reset_task, e1000_reset_task);
6756 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07006757 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround);
6758 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task);
Bruce Allan41cec6f2009-11-20 23:28:56 +00006759 INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006760
Auke Kokbc7f75f2007-09-17 12:30:59 -07006761 /* Initialize link parameters. User can change them with ethtool */
6762 adapter->hw.mac.autoneg = 1;
Rusty Russell3db1cd52011-12-19 13:56:45 +00006763 adapter->fc_autoneg = true;
Bruce Allan5c48ef3e22008-11-21 16:57:36 -08006764 adapter->hw.fc.requested_mode = e1000_fc_default;
6765 adapter->hw.fc.current_mode = e1000_fc_default;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006766 adapter->hw.phy.autoneg_advertised = 0x2f;
6767
Bruce Allane921eb12012-11-28 09:28:37 +00006768 /* Initial Wake on LAN setting - If APM wake is enabled in
Auke Kokbc7f75f2007-09-17 12:30:59 -07006769 * the EEPROM, enable the ACPI Magic Packet filter
6770 */
6771 if (adapter->flags & FLAG_APME_IN_WUC) {
6772 /* APME bit in EEPROM is mapped to WUC.APME */
6773 eeprom_data = er32(WUC);
6774 eeprom_apme_mask = E1000_WUC_APME;
Bruce Allan4def99b2011-02-02 09:30:36 +00006775 if ((hw->mac.type > e1000_ich10lan) &&
6776 (eeprom_data & E1000_WUC_PHY_WAKE))
Bruce Allana4f58f52009-06-02 11:29:18 +00006777 adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP;
Auke Kokbc7f75f2007-09-17 12:30:59 -07006778 } else if (adapter->flags & FLAG_APME_IN_CTRL3) {
6779 if (adapter->flags & FLAG_APME_CHECK_PORT_B &&
6780 (adapter->hw.bus.func == 1))
Bruce Allan3d3a1672012-02-23 03:13:18 +00006781 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_B,
6782 1, &eeprom_data);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006783 else
Bruce Allan3d3a1672012-02-23 03:13:18 +00006784 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_A,
6785 1, &eeprom_data);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006786 }
6787
6788 /* fetch WoL from EEPROM */
6789 if (eeprom_data & eeprom_apme_mask)
6790 adapter->eeprom_wol |= E1000_WUFC_MAG;
6791
Bruce Allane921eb12012-11-28 09:28:37 +00006792 /* now that we have the eeprom settings, apply the special cases
Auke Kokbc7f75f2007-09-17 12:30:59 -07006793 * where the eeprom may be wrong or the board simply won't support
6794 * wake on lan on a particular port
6795 */
6796 if (!(adapter->flags & FLAG_HAS_WOL))
6797 adapter->eeprom_wol = 0;
6798
6799 /* initialize the wol settings based on the eeprom settings */
6800 adapter->wol = adapter->eeprom_wol;
Konstantin Khlebnikov66148ba2013-03-05 09:43:04 +00006801
6802 /* make sure adapter isn't asleep if manageability is enabled */
6803 if (adapter->wol || (adapter->flags & FLAG_MNG_PT_ENABLED) ||
6804 (hw->mac.ops.check_mng_mode(hw)))
6805 device_wakeup_enable(&pdev->dev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006806
Bruce Allan84527592008-11-21 17:00:22 -08006807 /* save off EEPROM version number */
6808 e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers);
6809
Auke Kokbc7f75f2007-09-17 12:30:59 -07006810 /* reset the hardware with the new settings */
6811 e1000e_reset(adapter);
6812
Bruce Allane921eb12012-11-28 09:28:37 +00006813 /* If the controller has AMT, do not set DRV_LOAD until the interface
Auke Kokbc7f75f2007-09-17 12:30:59 -07006814 * is up. For all other cases, let the f/w know that the h/w is now
Bruce Allanad680762008-03-28 09:15:03 -07006815 * under the control of the driver.
6816 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07006817 if (!(adapter->flags & FLAG_HAS_AMT))
Bruce Allan31dbe5b2011-01-06 14:29:52 +00006818 e1000e_get_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006819
Bruce Allanf2315bf2011-12-16 00:46:59 +00006820 strlcpy(netdev->name, "eth%d", sizeof(netdev->name));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006821 err = register_netdev(netdev);
6822 if (err)
6823 goto err_register;
6824
Jesse Brandeburg9c563d22009-04-17 20:44:34 +00006825 /* carrier off reporting is important to ethtool even BEFORE open */
6826 netif_carrier_off(netdev);
6827
Bruce Alland89777b2013-01-19 01:09:58 +00006828 /* init PTP hardware clock */
6829 e1000e_ptp_init(adapter);
6830
Auke Kokbc7f75f2007-09-17 12:30:59 -07006831 e1000_print_device_info(adapter);
6832
Alan Sternf3ec4f82010-06-08 15:23:51 -04006833 if (pci_dev_run_wake(pdev))
6834 pm_runtime_put_noidle(&pdev->dev);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006835
Auke Kokbc7f75f2007-09-17 12:30:59 -07006836 return 0;
6837
6838err_register:
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07006839 if (!(adapter->flags & FLAG_HAS_AMT))
Bruce Allan31dbe5b2011-01-06 14:29:52 +00006840 e1000e_release_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006841err_eeprom:
Bruce Allan470a5422012-05-26 06:08:48 +00006842 if (hw->phy.ops.check_reset_block && !hw->phy.ops.check_reset_block(hw))
Auke Kokbc7f75f2007-09-17 12:30:59 -07006843 e1000_phy_hw_reset(&adapter->hw);
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07006844err_hw_init:
Auke Kokbc7f75f2007-09-17 12:30:59 -07006845 kfree(adapter->tx_ring);
6846 kfree(adapter->rx_ring);
6847err_sw_init:
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07006848 if (adapter->hw.flash_address)
6849 iounmap(adapter->hw.flash_address);
Jeff Kirshere82f54b2008-11-14 06:45:07 +00006850 e1000e_reset_interrupt_capability(adapter);
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07006851err_flashmap:
Auke Kokbc7f75f2007-09-17 12:30:59 -07006852 iounmap(adapter->hw.hw_addr);
6853err_ioremap:
6854 free_netdev(netdev);
6855err_alloc_etherdev:
Bruce Allanf0f422e2008-08-04 17:21:53 -07006856 pci_release_selected_regions(pdev,
Bruce Allanf0ff4392013-02-20 04:05:39 +00006857 pci_select_bars(pdev, IORESOURCE_MEM));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006858err_pci_reg:
6859err_dma:
6860 pci_disable_device(pdev);
6861 return err;
6862}
6863
6864/**
6865 * e1000_remove - Device Removal Routine
6866 * @pdev: PCI device information struct
6867 *
6868 * e1000_remove is called by the PCI subsystem to alert the driver
6869 * that it should release a PCI device. The could be caused by a
6870 * Hot-Plug event, or because the driver is going to be removed from
6871 * memory.
6872 **/
Bill Pemberton9f9a12f2012-12-03 09:24:25 -05006873static void e1000_remove(struct pci_dev *pdev)
Auke Kokbc7f75f2007-09-17 12:30:59 -07006874{
6875 struct net_device *netdev = pci_get_drvdata(pdev);
6876 struct e1000_adapter *adapter = netdev_priv(netdev);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006877 bool down = test_bit(__E1000_DOWN, &adapter->state);
6878
Bruce Alland89777b2013-01-19 01:09:58 +00006879 e1000e_ptp_remove(adapter);
6880
Bruce Allane921eb12012-11-28 09:28:37 +00006881 /* The timers may be rescheduled, so explicitly disable them
Tejun Heo23f333a2010-12-12 16:45:14 +01006882 * from being rescheduled.
Bruce Allanad680762008-03-28 09:15:03 -07006883 */
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006884 if (!down)
6885 set_bit(__E1000_DOWN, &adapter->state);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006886 del_timer_sync(&adapter->watchdog_timer);
6887 del_timer_sync(&adapter->phy_info_timer);
6888
Bruce Allan41cec6f2009-11-20 23:28:56 +00006889 cancel_work_sync(&adapter->reset_task);
6890 cancel_work_sync(&adapter->watchdog_task);
6891 cancel_work_sync(&adapter->downshift_task);
6892 cancel_work_sync(&adapter->update_phy_task);
6893 cancel_work_sync(&adapter->print_hang_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006894
Bruce Allanb67e1912012-12-27 08:32:33 +00006895 if (adapter->flags & FLAG_HAS_HW_TIMESTAMP) {
6896 cancel_work_sync(&adapter->tx_hwtstamp_work);
6897 if (adapter->tx_hwtstamp_skb) {
6898 dev_kfree_skb_any(adapter->tx_hwtstamp_skb);
6899 adapter->tx_hwtstamp_skb = NULL;
6900 }
6901 }
6902
Bruce Allan17f208d2009-12-01 15:47:22 +00006903 if (!(netdev->flags & IFF_UP))
6904 e1000_power_down_phy(adapter);
6905
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006906 /* Don't lie to e1000_close() down the road. */
6907 if (!down)
6908 clear_bit(__E1000_DOWN, &adapter->state);
Bruce Allan17f208d2009-12-01 15:47:22 +00006909 unregister_netdev(netdev);
6910
Alan Sternf3ec4f82010-06-08 15:23:51 -04006911 if (pci_dev_run_wake(pdev))
6912 pm_runtime_get_noresume(&pdev->dev);
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00006913
Bruce Allane921eb12012-11-28 09:28:37 +00006914 /* Release control of h/w to f/w. If f/w is AMT enabled, this
Bruce Allanad680762008-03-28 09:15:03 -07006915 * would have already happened in close and is redundant.
6916 */
Bruce Allan31dbe5b2011-01-06 14:29:52 +00006917 e1000e_release_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006918
Bruce Allan4662e822008-08-26 18:37:06 -07006919 e1000e_reset_interrupt_capability(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07006920 kfree(adapter->tx_ring);
6921 kfree(adapter->rx_ring);
6922
6923 iounmap(adapter->hw.hw_addr);
6924 if (adapter->hw.flash_address)
6925 iounmap(adapter->hw.flash_address);
Bruce Allanf0f422e2008-08-04 17:21:53 -07006926 pci_release_selected_regions(pdev,
Bruce Allanf0ff4392013-02-20 04:05:39 +00006927 pci_select_bars(pdev, IORESOURCE_MEM));
Auke Kokbc7f75f2007-09-17 12:30:59 -07006928
6929 free_netdev(netdev);
6930
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00006931 /* AER disable */
Frans Pop19d5afd2009-10-02 10:04:12 -07006932 pci_disable_pcie_error_reporting(pdev);
Jesse Brandeburg111b9dc2009-02-10 12:51:20 +00006933
Auke Kokbc7f75f2007-09-17 12:30:59 -07006934 pci_disable_device(pdev);
6935}
6936
6937/* PCI Error Recovery (ERS) */
Stephen Hemminger3646f0e2012-09-07 09:33:15 -07006938static const struct pci_error_handlers e1000_err_handler = {
Auke Kokbc7f75f2007-09-17 12:30:59 -07006939 .error_detected = e1000_io_error_detected,
6940 .slot_reset = e1000_io_slot_reset,
6941 .resume = e1000_io_resume,
6942};
6943
Alexey Dobriyana3aa1882010-01-07 11:58:11 +00006944static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = {
Auke Kokbc7f75f2007-09-17 12:30:59 -07006945 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 },
6946 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 },
6947 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 },
Bruce Allanc29c3ba2013-02-20 04:05:50 +00006948 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP),
6949 board_82571 },
Auke Kokbc7f75f2007-09-17 12:30:59 -07006950 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 },
6951 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 },
Auke Kok040babf2007-10-31 15:22:05 -07006952 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 },
6953 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 },
6954 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 },
Bruce Allanad680762008-03-28 09:15:03 -07006955
Auke Kokbc7f75f2007-09-17 12:30:59 -07006956 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 },
6957 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 },
6958 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 },
6959 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 },
Bruce Allanad680762008-03-28 09:15:03 -07006960
Auke Kokbc7f75f2007-09-17 12:30:59 -07006961 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 },
6962 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 },
6963 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 },
Bruce Allanad680762008-03-28 09:15:03 -07006964
Bruce Allan4662e822008-08-26 18:37:06 -07006965 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 },
Bruce Allanbef28b12009-03-24 23:28:02 -07006966 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 },
Alexander Duyck8c81c9c2009-03-19 01:12:27 +00006967 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 },
Bruce Allan4662e822008-08-26 18:37:06 -07006968
Auke Kokbc7f75f2007-09-17 12:30:59 -07006969 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT),
6970 board_80003es2lan },
6971 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT),
6972 board_80003es2lan },
6973 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT),
6974 board_80003es2lan },
6975 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT),
6976 board_80003es2lan },
Bruce Allanad680762008-03-28 09:15:03 -07006977
Auke Kokbc7f75f2007-09-17 12:30:59 -07006978 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan },
6979 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan },
6980 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan },
6981 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan },
6982 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan },
6983 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan },
6984 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan },
Bruce Allan9e135a22009-12-01 15:50:31 +00006985 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan },
Bruce Allanad680762008-03-28 09:15:03 -07006986
Auke Kokbc7f75f2007-09-17 12:30:59 -07006987 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan },
6988 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan },
6989 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan },
6990 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan },
6991 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan },
Bruce Allan2f15f9d2008-08-26 18:36:36 -07006992 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan },
Bruce Allan97ac8ca2008-04-29 09:16:05 -07006993 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan },
6994 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan },
6995 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan },
6996
6997 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan },
6998 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan },
6999 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan },
Auke Kokbc7f75f2007-09-17 12:30:59 -07007000
Bruce Allanf4187b52008-08-26 18:36:50 -07007001 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan },
7002 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan },
Bruce Allan10df0b92010-05-10 15:02:52 +00007003 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan },
Bruce Allanf4187b52008-08-26 18:36:50 -07007004
Bruce Allana4f58f52009-06-02 11:29:18 +00007005 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan },
7006 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan },
7007 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan },
7008 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan },
7009
Bruce Alland3738bb2010-06-16 13:27:28 +00007010 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan },
7011 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan },
7012
Bruce Allan2fbe4522012-04-19 03:21:47 +00007013 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_LM), board_pch_lpt },
7014 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_V), board_pch_lpt },
Bruce Allan16e310a2012-10-09 01:11:26 +00007015 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPTLP_I218_LM), board_pch_lpt },
7016 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPTLP_I218_V), board_pch_lpt },
Bruce Allan91a3d822013-06-29 01:15:16 +00007017 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_LM2), board_pch_lpt },
7018 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_V2), board_pch_lpt },
7019 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_LM3), board_pch_lpt },
7020 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_V3), board_pch_lpt },
Bruce Allan2fbe4522012-04-19 03:21:47 +00007021
Bruce Allanf36bb6c2012-01-31 06:38:04 +00007022 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */
Auke Kokbc7f75f2007-09-17 12:30:59 -07007023};
7024MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
7025
Rafael J. Wysockiaa338602011-02-11 00:06:54 +01007026#ifdef CONFIG_PM
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00007027static const struct dev_pm_ops e1000_pm_ops = {
Rafael J. Wysockia0340162010-03-17 23:12:24 -07007028 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume)
Bruce Allan17e813e2013-02-20 04:06:01 +00007029 SET_RUNTIME_PM_OPS(e1000_runtime_suspend, e1000_runtime_resume,
7030 e1000_idle)
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00007031};
David S. Millere50208a2010-03-16 23:36:24 -07007032#endif
Rafael J. Wysocki23606cf2010-03-14 14:35:17 +00007033
Auke Kokbc7f75f2007-09-17 12:30:59 -07007034/* PCI Device API Driver */
7035static struct pci_driver e1000_driver = {
7036 .name = e1000e_driver_name,
7037 .id_table = e1000_pci_tbl,
7038 .probe = e1000_probe,
Bill Pemberton9f9a12f2012-12-03 09:24:25 -05007039 .remove = e1000_remove,
Rafael J. Wysockiaa338602011-02-11 00:06:54 +01007040#ifdef CONFIG_PM
Bruce Allanf36bb6c2012-01-31 06:38:04 +00007041 .driver = {
7042 .pm = &e1000_pm_ops,
7043 },
Auke Kokbc7f75f2007-09-17 12:30:59 -07007044#endif
7045 .shutdown = e1000_shutdown,
7046 .err_handler = &e1000_err_handler
7047};
7048
7049/**
7050 * e1000_init_module - Driver Registration Routine
7051 *
7052 * e1000_init_module is the first routine called when the driver is
7053 * loaded. All it does is register with the PCI subsystem.
7054 **/
7055static int __init e1000_init_module(void)
7056{
7057 int ret;
Bruce Allan8544b9f2010-03-24 12:55:30 +00007058 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
7059 e1000e_driver_version);
Bruce Allanbf670442013-01-01 16:00:01 +00007060 pr_info("Copyright(c) 1999 - 2013 Intel Corporation.\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07007061 ret = pci_register_driver(&e1000_driver);
Bruce Allan53ec5492009-11-20 23:27:40 +00007062
Auke Kokbc7f75f2007-09-17 12:30:59 -07007063 return ret;
7064}
7065module_init(e1000_init_module);
7066
7067/**
7068 * e1000_exit_module - Driver Exit Cleanup Routine
7069 *
7070 * e1000_exit_module is called just before the driver is removed
7071 * from memory.
7072 **/
7073static void __exit e1000_exit_module(void)
7074{
7075 pci_unregister_driver(&e1000_driver);
Auke Kokbc7f75f2007-09-17 12:30:59 -07007076}
7077module_exit(e1000_exit_module);
7078
Auke Kokbc7f75f2007-09-17 12:30:59 -07007079MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
7080MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
7081MODULE_LICENSE("GPL");
7082MODULE_VERSION(DRV_VERSION);
7083
Bruce Allan06c24b92012-02-23 03:13:13 +00007084/* netdev.c */