1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2010 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
29 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31 #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>
39 #include <linux/tcp.h>
40 #include <linux/ipv6.h>
41 #include <linux/slab.h>
42 #include <net/checksum.h>
43 #include <net/ip6_checksum.h>
44 #include <linux/mii.h>
45 #include <linux/ethtool.h>
46 #include <linux/if_vlan.h>
47 #include <linux/cpu.h>
48 #include <linux/smp.h>
49 #include <linux/pm_qos_params.h>
50 #include <linux/pm_runtime.h>
51 #include <linux/aer.h>
55 #define DRV_EXTRAVERSION "-k2"
57 #define DRV_VERSION "1.2.7" DRV_EXTRAVERSION
58 char e1000e_driver_name
[] = "e1000e";
59 const char e1000e_driver_version
[] = DRV_VERSION
;
61 static const struct e1000_info
*e1000_info_tbl
[] = {
62 [board_82571
] = &e1000_82571_info
,
63 [board_82572
] = &e1000_82572_info
,
64 [board_82573
] = &e1000_82573_info
,
65 [board_82574
] = &e1000_82574_info
,
66 [board_82583
] = &e1000_82583_info
,
67 [board_80003es2lan
] = &e1000_es2_info
,
68 [board_ich8lan
] = &e1000_ich8_info
,
69 [board_ich9lan
] = &e1000_ich9_info
,
70 [board_ich10lan
] = &e1000_ich10_info
,
71 [board_pchlan
] = &e1000_pch_info
,
72 [board_pch2lan
] = &e1000_pch2_info
,
75 struct e1000_reg_info
{
80 #define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */
81 #define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */
82 #define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */
83 #define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */
84 #define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */
86 #define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */
87 #define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */
88 #define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */
89 #define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */
90 #define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */
92 static const struct e1000_reg_info e1000_reg_info_tbl
[] = {
94 /* General Registers */
96 {E1000_STATUS
, "STATUS"},
97 {E1000_CTRL_EXT
, "CTRL_EXT"},
99 /* Interrupt Registers */
103 {E1000_RCTL
, "RCTL"},
104 {E1000_RDLEN
, "RDLEN"},
107 {E1000_RDTR
, "RDTR"},
108 {E1000_RXDCTL(0), "RXDCTL"},
110 {E1000_RDBAL
, "RDBAL"},
111 {E1000_RDBAH
, "RDBAH"},
112 {E1000_RDFH
, "RDFH"},
113 {E1000_RDFT
, "RDFT"},
114 {E1000_RDFHS
, "RDFHS"},
115 {E1000_RDFTS
, "RDFTS"},
116 {E1000_RDFPC
, "RDFPC"},
119 {E1000_TCTL
, "TCTL"},
120 {E1000_TDBAL
, "TDBAL"},
121 {E1000_TDBAH
, "TDBAH"},
122 {E1000_TDLEN
, "TDLEN"},
125 {E1000_TIDV
, "TIDV"},
126 {E1000_TXDCTL(0), "TXDCTL"},
127 {E1000_TADV
, "TADV"},
128 {E1000_TARC(0), "TARC"},
129 {E1000_TDFH
, "TDFH"},
130 {E1000_TDFT
, "TDFT"},
131 {E1000_TDFHS
, "TDFHS"},
132 {E1000_TDFTS
, "TDFTS"},
133 {E1000_TDFPC
, "TDFPC"},
135 /* List Terminator */
140 * e1000_regdump - register printout routine
142 static void e1000_regdump(struct e1000_hw
*hw
, struct e1000_reg_info
*reginfo
)
148 switch (reginfo
->ofs
) {
149 case E1000_RXDCTL(0):
150 for (n
= 0; n
< 2; n
++)
151 regs
[n
] = __er32(hw
, E1000_RXDCTL(n
));
153 case E1000_TXDCTL(0):
154 for (n
= 0; n
< 2; n
++)
155 regs
[n
] = __er32(hw
, E1000_TXDCTL(n
));
158 for (n
= 0; n
< 2; n
++)
159 regs
[n
] = __er32(hw
, E1000_TARC(n
));
162 printk(KERN_INFO
"%-15s %08x\n",
163 reginfo
->name
, __er32(hw
, reginfo
->ofs
));
167 snprintf(rname
, 16, "%s%s", reginfo
->name
, "[0-1]");
168 printk(KERN_INFO
"%-15s ", rname
);
169 for (n
= 0; n
< 2; n
++)
170 printk(KERN_CONT
"%08x ", regs
[n
]);
171 printk(KERN_CONT
"\n");
176 * e1000e_dump - Print registers, tx-ring and rx-ring
178 static void e1000e_dump(struct e1000_adapter
*adapter
)
180 struct net_device
*netdev
= adapter
->netdev
;
181 struct e1000_hw
*hw
= &adapter
->hw
;
182 struct e1000_reg_info
*reginfo
;
183 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
184 struct e1000_tx_desc
*tx_desc
;
185 struct my_u0
{ u64 a
; u64 b
; } *u0
;
186 struct e1000_buffer
*buffer_info
;
187 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
188 union e1000_rx_desc_packet_split
*rx_desc_ps
;
189 struct e1000_rx_desc
*rx_desc
;
190 struct my_u1
{ u64 a
; u64 b
; u64 c
; u64 d
; } *u1
;
194 if (!netif_msg_hw(adapter
))
197 /* Print netdevice Info */
199 dev_info(&adapter
->pdev
->dev
, "Net device Info\n");
200 printk(KERN_INFO
"Device Name state "
201 "trans_start last_rx\n");
202 printk(KERN_INFO
"%-15s %016lX %016lX %016lX\n",
209 /* Print Registers */
210 dev_info(&adapter
->pdev
->dev
, "Register Dump\n");
211 printk(KERN_INFO
" Register Name Value\n");
212 for (reginfo
= (struct e1000_reg_info
*)e1000_reg_info_tbl
;
213 reginfo
->name
; reginfo
++) {
214 e1000_regdump(hw
, reginfo
);
217 /* Print TX Ring Summary */
218 if (!netdev
|| !netif_running(netdev
))
221 dev_info(&adapter
->pdev
->dev
, "TX Rings Summary\n");
222 printk(KERN_INFO
"Queue [NTU] [NTC] [bi(ntc)->dma ]"
223 " leng ntw timestamp\n");
224 buffer_info
= &tx_ring
->buffer_info
[tx_ring
->next_to_clean
];
225 printk(KERN_INFO
" %5d %5X %5X %016llX %04X %3X %016llX\n",
226 0, tx_ring
->next_to_use
, tx_ring
->next_to_clean
,
227 (unsigned long long)buffer_info
->dma
,
229 buffer_info
->next_to_watch
,
230 (unsigned long long)buffer_info
->time_stamp
);
233 if (!netif_msg_tx_done(adapter
))
234 goto rx_ring_summary
;
236 dev_info(&adapter
->pdev
->dev
, "TX Rings Dump\n");
238 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
240 * Legacy Transmit Descriptor
241 * +--------------------------------------------------------------+
242 * 0 | Buffer Address [63:0] (Reserved on Write Back) |
243 * +--------------------------------------------------------------+
244 * 8 | Special | CSS | Status | CMD | CSO | Length |
245 * +--------------------------------------------------------------+
246 * 63 48 47 36 35 32 31 24 23 16 15 0
248 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
249 * 63 48 47 40 39 32 31 16 15 8 7 0
250 * +----------------------------------------------------------------+
251 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
252 * +----------------------------------------------------------------+
253 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
254 * +----------------------------------------------------------------+
255 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
257 * Extended Data Descriptor (DTYP=0x1)
258 * +----------------------------------------------------------------+
259 * 0 | Buffer Address [63:0] |
260 * +----------------------------------------------------------------+
261 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
262 * +----------------------------------------------------------------+
263 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
265 printk(KERN_INFO
"Tl[desc] [address 63:0 ] [SpeCssSCmCsLen]"
266 " [bi->dma ] leng ntw timestamp bi->skb "
267 "<-- Legacy format\n");
268 printk(KERN_INFO
"Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen]"
269 " [bi->dma ] leng ntw timestamp bi->skb "
270 "<-- Ext Context format\n");
271 printk(KERN_INFO
"Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen]"
272 " [bi->dma ] leng ntw timestamp bi->skb "
273 "<-- Ext Data format\n");
274 for (i
= 0; tx_ring
->desc
&& (i
< tx_ring
->count
); i
++) {
275 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
276 buffer_info
= &tx_ring
->buffer_info
[i
];
277 u0
= (struct my_u0
*)tx_desc
;
278 printk(KERN_INFO
"T%c[0x%03X] %016llX %016llX %016llX "
279 "%04X %3X %016llX %p",
280 (!(le64_to_cpu(u0
->b
) & (1<<29)) ? 'l' :
281 ((le64_to_cpu(u0
->b
) & (1<<20)) ? 'd' : 'c')), i
,
282 (unsigned long long)le64_to_cpu(u0
->a
),
283 (unsigned long long)le64_to_cpu(u0
->b
),
284 (unsigned long long)buffer_info
->dma
,
285 buffer_info
->length
, buffer_info
->next_to_watch
,
286 (unsigned long long)buffer_info
->time_stamp
,
288 if (i
== tx_ring
->next_to_use
&& i
== tx_ring
->next_to_clean
)
289 printk(KERN_CONT
" NTC/U\n");
290 else if (i
== tx_ring
->next_to_use
)
291 printk(KERN_CONT
" NTU\n");
292 else if (i
== tx_ring
->next_to_clean
)
293 printk(KERN_CONT
" NTC\n");
295 printk(KERN_CONT
"\n");
297 if (netif_msg_pktdata(adapter
) && buffer_info
->dma
!= 0)
298 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_ADDRESS
,
299 16, 1, phys_to_virt(buffer_info
->dma
),
300 buffer_info
->length
, true);
303 /* Print RX Rings Summary */
305 dev_info(&adapter
->pdev
->dev
, "RX Rings Summary\n");
306 printk(KERN_INFO
"Queue [NTU] [NTC]\n");
307 printk(KERN_INFO
" %5d %5X %5X\n", 0,
308 rx_ring
->next_to_use
, rx_ring
->next_to_clean
);
311 if (!netif_msg_rx_status(adapter
))
314 dev_info(&adapter
->pdev
->dev
, "RX Rings Dump\n");
315 switch (adapter
->rx_ps_pages
) {
319 /* [Extended] Packet Split Receive Descriptor Format
321 * +-----------------------------------------------------+
322 * 0 | Buffer Address 0 [63:0] |
323 * +-----------------------------------------------------+
324 * 8 | Buffer Address 1 [63:0] |
325 * +-----------------------------------------------------+
326 * 16 | Buffer Address 2 [63:0] |
327 * +-----------------------------------------------------+
328 * 24 | Buffer Address 3 [63:0] |
329 * +-----------------------------------------------------+
331 printk(KERN_INFO
"R [desc] [buffer 0 63:0 ] "
333 "[buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] "
334 "[bi->skb] <-- Ext Pkt Split format\n");
335 /* [Extended] Receive Descriptor (Write-Back) Format
337 * 63 48 47 32 31 13 12 8 7 4 3 0
338 * +------------------------------------------------------+
339 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
340 * | Checksum | Ident | | Queue | | Type |
341 * +------------------------------------------------------+
342 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
343 * +------------------------------------------------------+
344 * 63 48 47 32 31 20 19 0
346 printk(KERN_INFO
"RWB[desc] [ck ipid mrqhsh] "
348 "[ l3 l2 l1 hs] [reserved ] ---------------- "
349 "[bi->skb] <-- Ext Rx Write-Back format\n");
350 for (i
= 0; i
< rx_ring
->count
; i
++) {
351 buffer_info
= &rx_ring
->buffer_info
[i
];
352 rx_desc_ps
= E1000_RX_DESC_PS(*rx_ring
, i
);
353 u1
= (struct my_u1
*)rx_desc_ps
;
355 le32_to_cpu(rx_desc_ps
->wb
.middle
.status_error
);
356 if (staterr
& E1000_RXD_STAT_DD
) {
357 /* Descriptor Done */
358 printk(KERN_INFO
"RWB[0x%03X] %016llX "
359 "%016llX %016llX %016llX "
360 "---------------- %p", i
,
361 (unsigned long long)le64_to_cpu(u1
->a
),
362 (unsigned long long)le64_to_cpu(u1
->b
),
363 (unsigned long long)le64_to_cpu(u1
->c
),
364 (unsigned long long)le64_to_cpu(u1
->d
),
367 printk(KERN_INFO
"R [0x%03X] %016llX "
368 "%016llX %016llX %016llX %016llX %p", i
,
369 (unsigned long long)le64_to_cpu(u1
->a
),
370 (unsigned long long)le64_to_cpu(u1
->b
),
371 (unsigned long long)le64_to_cpu(u1
->c
),
372 (unsigned long long)le64_to_cpu(u1
->d
),
373 (unsigned long long)buffer_info
->dma
,
376 if (netif_msg_pktdata(adapter
))
377 print_hex_dump(KERN_INFO
, "",
378 DUMP_PREFIX_ADDRESS
, 16, 1,
379 phys_to_virt(buffer_info
->dma
),
380 adapter
->rx_ps_bsize0
, true);
383 if (i
== rx_ring
->next_to_use
)
384 printk(KERN_CONT
" NTU\n");
385 else if (i
== rx_ring
->next_to_clean
)
386 printk(KERN_CONT
" NTC\n");
388 printk(KERN_CONT
"\n");
393 /* Legacy Receive Descriptor Format
395 * +-----------------------------------------------------+
396 * | Buffer Address [63:0] |
397 * +-----------------------------------------------------+
398 * | VLAN Tag | Errors | Status 0 | Packet csum | Length |
399 * +-----------------------------------------------------+
400 * 63 48 47 40 39 32 31 16 15 0
402 printk(KERN_INFO
"Rl[desc] [address 63:0 ] "
403 "[vl er S cks ln] [bi->dma ] [bi->skb] "
404 "<-- Legacy format\n");
405 for (i
= 0; rx_ring
->desc
&& (i
< rx_ring
->count
); i
++) {
406 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
407 buffer_info
= &rx_ring
->buffer_info
[i
];
408 u0
= (struct my_u0
*)rx_desc
;
409 printk(KERN_INFO
"Rl[0x%03X] %016llX %016llX "
411 (unsigned long long)le64_to_cpu(u0
->a
),
412 (unsigned long long)le64_to_cpu(u0
->b
),
413 (unsigned long long)buffer_info
->dma
,
415 if (i
== rx_ring
->next_to_use
)
416 printk(KERN_CONT
" NTU\n");
417 else if (i
== rx_ring
->next_to_clean
)
418 printk(KERN_CONT
" NTC\n");
420 printk(KERN_CONT
"\n");
422 if (netif_msg_pktdata(adapter
))
423 print_hex_dump(KERN_INFO
, "",
425 16, 1, phys_to_virt(buffer_info
->dma
),
426 adapter
->rx_buffer_len
, true);
435 * e1000_desc_unused - calculate if we have unused descriptors
437 static int e1000_desc_unused(struct e1000_ring
*ring
)
439 if (ring
->next_to_clean
> ring
->next_to_use
)
440 return ring
->next_to_clean
- ring
->next_to_use
- 1;
442 return ring
->count
+ ring
->next_to_clean
- ring
->next_to_use
- 1;
446 * e1000_receive_skb - helper function to handle Rx indications
447 * @adapter: board private structure
448 * @status: descriptor status field as written by hardware
449 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
450 * @skb: pointer to sk_buff to be indicated to stack
452 static void e1000_receive_skb(struct e1000_adapter
*adapter
,
453 struct net_device
*netdev
,
455 u8 status
, __le16 vlan
)
457 skb
->protocol
= eth_type_trans(skb
, netdev
);
459 if (adapter
->vlgrp
&& (status
& E1000_RXD_STAT_VP
))
460 vlan_gro_receive(&adapter
->napi
, adapter
->vlgrp
,
461 le16_to_cpu(vlan
), skb
);
463 napi_gro_receive(&adapter
->napi
, skb
);
467 * e1000_rx_checksum - Receive Checksum Offload for 82543
468 * @adapter: board private structure
469 * @status_err: receive descriptor status and error fields
470 * @csum: receive descriptor csum field
471 * @sk_buff: socket buffer with received data
473 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
474 u32 csum
, struct sk_buff
*skb
)
476 u16 status
= (u16
)status_err
;
477 u8 errors
= (u8
)(status_err
>> 24);
478 skb
->ip_summed
= CHECKSUM_NONE
;
480 /* Ignore Checksum bit is set */
481 if (status
& E1000_RXD_STAT_IXSM
)
483 /* TCP/UDP checksum error bit is set */
484 if (errors
& E1000_RXD_ERR_TCPE
) {
485 /* let the stack verify checksum errors */
486 adapter
->hw_csum_err
++;
490 /* TCP/UDP Checksum has not been calculated */
491 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
494 /* It must be a TCP or UDP packet with a valid checksum */
495 if (status
& E1000_RXD_STAT_TCPCS
) {
496 /* TCP checksum is good */
497 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
500 * IP fragment with UDP payload
501 * Hardware complements the payload checksum, so we undo it
502 * and then put the value in host order for further stack use.
504 __sum16 sum
= (__force __sum16
)htons(csum
);
505 skb
->csum
= csum_unfold(~sum
);
506 skb
->ip_summed
= CHECKSUM_COMPLETE
;
508 adapter
->hw_csum_good
++;
512 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
513 * @adapter: address of board private structure
515 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
518 struct net_device
*netdev
= adapter
->netdev
;
519 struct pci_dev
*pdev
= adapter
->pdev
;
520 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
521 struct e1000_rx_desc
*rx_desc
;
522 struct e1000_buffer
*buffer_info
;
525 unsigned int bufsz
= adapter
->rx_buffer_len
;
527 i
= rx_ring
->next_to_use
;
528 buffer_info
= &rx_ring
->buffer_info
[i
];
530 while (cleaned_count
--) {
531 skb
= buffer_info
->skb
;
537 skb
= netdev_alloc_skb_ip_align(netdev
, bufsz
);
539 /* Better luck next round */
540 adapter
->alloc_rx_buff_failed
++;
544 buffer_info
->skb
= skb
;
546 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
547 adapter
->rx_buffer_len
,
549 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
550 dev_err(&pdev
->dev
, "RX DMA map failed\n");
551 adapter
->rx_dma_failed
++;
555 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
556 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
558 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
560 * Force memory writes to complete before letting h/w
561 * know there are new descriptors to fetch. (Only
562 * applicable for weak-ordered memory model archs,
566 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
569 if (i
== rx_ring
->count
)
571 buffer_info
= &rx_ring
->buffer_info
[i
];
574 rx_ring
->next_to_use
= i
;
578 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
579 * @adapter: address of board private structure
581 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
584 struct net_device
*netdev
= adapter
->netdev
;
585 struct pci_dev
*pdev
= adapter
->pdev
;
586 union e1000_rx_desc_packet_split
*rx_desc
;
587 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
588 struct e1000_buffer
*buffer_info
;
589 struct e1000_ps_page
*ps_page
;
593 i
= rx_ring
->next_to_use
;
594 buffer_info
= &rx_ring
->buffer_info
[i
];
596 while (cleaned_count
--) {
597 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
599 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
600 ps_page
= &buffer_info
->ps_pages
[j
];
601 if (j
>= adapter
->rx_ps_pages
) {
602 /* all unused desc entries get hw null ptr */
603 rx_desc
->read
.buffer_addr
[j
+1] = ~cpu_to_le64(0);
606 if (!ps_page
->page
) {
607 ps_page
->page
= alloc_page(GFP_ATOMIC
);
608 if (!ps_page
->page
) {
609 adapter
->alloc_rx_buff_failed
++;
612 ps_page
->dma
= dma_map_page(&pdev
->dev
,
616 if (dma_mapping_error(&pdev
->dev
,
618 dev_err(&adapter
->pdev
->dev
,
619 "RX DMA page map failed\n");
620 adapter
->rx_dma_failed
++;
625 * Refresh the desc even if buffer_addrs
626 * didn't change because each write-back
629 rx_desc
->read
.buffer_addr
[j
+1] =
630 cpu_to_le64(ps_page
->dma
);
633 skb
= netdev_alloc_skb_ip_align(netdev
,
634 adapter
->rx_ps_bsize0
);
637 adapter
->alloc_rx_buff_failed
++;
641 buffer_info
->skb
= skb
;
642 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
643 adapter
->rx_ps_bsize0
,
645 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
646 dev_err(&pdev
->dev
, "RX DMA map failed\n");
647 adapter
->rx_dma_failed
++;
649 dev_kfree_skb_any(skb
);
650 buffer_info
->skb
= NULL
;
654 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
656 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
658 * Force memory writes to complete before letting h/w
659 * know there are new descriptors to fetch. (Only
660 * applicable for weak-ordered memory model archs,
664 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
668 if (i
== rx_ring
->count
)
670 buffer_info
= &rx_ring
->buffer_info
[i
];
674 rx_ring
->next_to_use
= i
;
678 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
679 * @adapter: address of board private structure
680 * @cleaned_count: number of buffers to allocate this pass
683 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter
*adapter
,
686 struct net_device
*netdev
= adapter
->netdev
;
687 struct pci_dev
*pdev
= adapter
->pdev
;
688 struct e1000_rx_desc
*rx_desc
;
689 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
690 struct e1000_buffer
*buffer_info
;
693 unsigned int bufsz
= 256 - 16 /* for skb_reserve */;
695 i
= rx_ring
->next_to_use
;
696 buffer_info
= &rx_ring
->buffer_info
[i
];
698 while (cleaned_count
--) {
699 skb
= buffer_info
->skb
;
705 skb
= netdev_alloc_skb_ip_align(netdev
, bufsz
);
706 if (unlikely(!skb
)) {
707 /* Better luck next round */
708 adapter
->alloc_rx_buff_failed
++;
712 buffer_info
->skb
= skb
;
714 /* allocate a new page if necessary */
715 if (!buffer_info
->page
) {
716 buffer_info
->page
= alloc_page(GFP_ATOMIC
);
717 if (unlikely(!buffer_info
->page
)) {
718 adapter
->alloc_rx_buff_failed
++;
723 if (!buffer_info
->dma
)
724 buffer_info
->dma
= dma_map_page(&pdev
->dev
,
725 buffer_info
->page
, 0,
729 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
730 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
732 if (unlikely(++i
== rx_ring
->count
))
734 buffer_info
= &rx_ring
->buffer_info
[i
];
737 if (likely(rx_ring
->next_to_use
!= i
)) {
738 rx_ring
->next_to_use
= i
;
739 if (unlikely(i
-- == 0))
740 i
= (rx_ring
->count
- 1);
742 /* Force memory writes to complete before letting h/w
743 * know there are new descriptors to fetch. (Only
744 * applicable for weak-ordered memory model archs,
747 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
752 * e1000_clean_rx_irq - Send received data up the network stack; legacy
753 * @adapter: board private structure
755 * the return value indicates whether actual cleaning was done, there
756 * is no guarantee that everything was cleaned
758 static bool e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
759 int *work_done
, int work_to_do
)
761 struct net_device
*netdev
= adapter
->netdev
;
762 struct pci_dev
*pdev
= adapter
->pdev
;
763 struct e1000_hw
*hw
= &adapter
->hw
;
764 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
765 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
766 struct e1000_buffer
*buffer_info
, *next_buffer
;
769 int cleaned_count
= 0;
771 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
773 i
= rx_ring
->next_to_clean
;
774 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
775 buffer_info
= &rx_ring
->buffer_info
[i
];
777 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
781 if (*work_done
>= work_to_do
)
784 rmb(); /* read descriptor and rx_buffer_info after status DD */
786 status
= rx_desc
->status
;
787 skb
= buffer_info
->skb
;
788 buffer_info
->skb
= NULL
;
790 prefetch(skb
->data
- NET_IP_ALIGN
);
793 if (i
== rx_ring
->count
)
795 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
798 next_buffer
= &rx_ring
->buffer_info
[i
];
802 dma_unmap_single(&pdev
->dev
,
804 adapter
->rx_buffer_len
,
806 buffer_info
->dma
= 0;
808 length
= le16_to_cpu(rx_desc
->length
);
811 * !EOP means multiple descriptors were used to store a single
812 * packet, if that's the case we need to toss it. In fact, we
813 * need to toss every packet with the EOP bit clear and the
814 * next frame that _does_ have the EOP bit set, as it is by
815 * definition only a frame fragment
817 if (unlikely(!(status
& E1000_RXD_STAT_EOP
)))
818 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
820 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
821 /* All receives must fit into a single buffer */
822 e_dbg("Receive packet consumed multiple buffers\n");
824 buffer_info
->skb
= skb
;
825 if (status
& E1000_RXD_STAT_EOP
)
826 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
830 if (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
) {
832 buffer_info
->skb
= skb
;
836 /* adjust length to remove Ethernet CRC */
837 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
840 total_rx_bytes
+= length
;
844 * code added for copybreak, this should improve
845 * performance for small packets with large amounts
846 * of reassembly being done in the stack
848 if (length
< copybreak
) {
849 struct sk_buff
*new_skb
=
850 netdev_alloc_skb_ip_align(netdev
, length
);
852 skb_copy_to_linear_data_offset(new_skb
,
858 /* save the skb in buffer_info as good */
859 buffer_info
->skb
= skb
;
862 /* else just continue with the old one */
864 /* end copybreak code */
865 skb_put(skb
, length
);
867 /* Receive Checksum Offload */
868 e1000_rx_checksum(adapter
,
870 ((u32
)(rx_desc
->errors
) << 24),
871 le16_to_cpu(rx_desc
->csum
), skb
);
873 e1000_receive_skb(adapter
, netdev
, skb
,status
,rx_desc
->special
);
878 /* return some buffers to hardware, one at a time is too slow */
879 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
880 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
884 /* use prefetched values */
886 buffer_info
= next_buffer
;
888 rx_ring
->next_to_clean
= i
;
890 cleaned_count
= e1000_desc_unused(rx_ring
);
892 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
894 adapter
->total_rx_bytes
+= total_rx_bytes
;
895 adapter
->total_rx_packets
+= total_rx_packets
;
896 netdev
->stats
.rx_bytes
+= total_rx_bytes
;
897 netdev
->stats
.rx_packets
+= total_rx_packets
;
901 static void e1000_put_txbuf(struct e1000_adapter
*adapter
,
902 struct e1000_buffer
*buffer_info
)
904 if (buffer_info
->dma
) {
905 if (buffer_info
->mapped_as_page
)
906 dma_unmap_page(&adapter
->pdev
->dev
, buffer_info
->dma
,
907 buffer_info
->length
, DMA_TO_DEVICE
);
909 dma_unmap_single(&adapter
->pdev
->dev
, buffer_info
->dma
,
910 buffer_info
->length
, DMA_TO_DEVICE
);
911 buffer_info
->dma
= 0;
913 if (buffer_info
->skb
) {
914 dev_kfree_skb_any(buffer_info
->skb
);
915 buffer_info
->skb
= NULL
;
917 buffer_info
->time_stamp
= 0;
920 static void e1000_print_hw_hang(struct work_struct
*work
)
922 struct e1000_adapter
*adapter
= container_of(work
,
923 struct e1000_adapter
,
925 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
926 unsigned int i
= tx_ring
->next_to_clean
;
927 unsigned int eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
928 struct e1000_tx_desc
*eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
929 struct e1000_hw
*hw
= &adapter
->hw
;
930 u16 phy_status
, phy_1000t_status
, phy_ext_status
;
933 e1e_rphy(hw
, PHY_STATUS
, &phy_status
);
934 e1e_rphy(hw
, PHY_1000T_STATUS
, &phy_1000t_status
);
935 e1e_rphy(hw
, PHY_EXT_STATUS
, &phy_ext_status
);
937 pci_read_config_word(adapter
->pdev
, PCI_STATUS
, &pci_status
);
939 /* detected Hardware unit hang */
940 e_err("Detected Hardware Unit Hang:\n"
943 " next_to_use <%x>\n"
944 " next_to_clean <%x>\n"
945 "buffer_info[next_to_clean]:\n"
946 " time_stamp <%lx>\n"
947 " next_to_watch <%x>\n"
949 " next_to_watch.status <%x>\n"
952 "PHY 1000BASE-T Status <%x>\n"
953 "PHY Extended Status <%x>\n"
955 readl(adapter
->hw
.hw_addr
+ tx_ring
->head
),
956 readl(adapter
->hw
.hw_addr
+ tx_ring
->tail
),
957 tx_ring
->next_to_use
,
958 tx_ring
->next_to_clean
,
959 tx_ring
->buffer_info
[eop
].time_stamp
,
962 eop_desc
->upper
.fields
.status
,
971 * e1000_clean_tx_irq - Reclaim resources after transmit completes
972 * @adapter: board private structure
974 * the return value indicates whether actual cleaning was done, there
975 * is no guarantee that everything was cleaned
977 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
)
979 struct net_device
*netdev
= adapter
->netdev
;
980 struct e1000_hw
*hw
= &adapter
->hw
;
981 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
982 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
983 struct e1000_buffer
*buffer_info
;
985 unsigned int count
= 0;
986 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
988 i
= tx_ring
->next_to_clean
;
989 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
990 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
992 while ((eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
993 (count
< tx_ring
->count
)) {
994 bool cleaned
= false;
995 rmb(); /* read buffer_info after eop_desc */
996 for (; !cleaned
; count
++) {
997 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
998 buffer_info
= &tx_ring
->buffer_info
[i
];
999 cleaned
= (i
== eop
);
1002 total_tx_packets
+= buffer_info
->segs
;
1003 total_tx_bytes
+= buffer_info
->bytecount
;
1006 e1000_put_txbuf(adapter
, buffer_info
);
1007 tx_desc
->upper
.data
= 0;
1010 if (i
== tx_ring
->count
)
1014 if (i
== tx_ring
->next_to_use
)
1016 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1017 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1020 tx_ring
->next_to_clean
= i
;
1022 #define TX_WAKE_THRESHOLD 32
1023 if (count
&& netif_carrier_ok(netdev
) &&
1024 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
1025 /* Make sure that anybody stopping the queue after this
1026 * sees the new next_to_clean.
1030 if (netif_queue_stopped(netdev
) &&
1031 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
1032 netif_wake_queue(netdev
);
1033 ++adapter
->restart_queue
;
1037 if (adapter
->detect_tx_hung
) {
1039 * Detect a transmit hang in hardware, this serializes the
1040 * check with the clearing of time_stamp and movement of i
1042 adapter
->detect_tx_hung
= 0;
1043 if (tx_ring
->buffer_info
[i
].time_stamp
&&
1044 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
1045 + (adapter
->tx_timeout_factor
* HZ
)) &&
1046 !(er32(STATUS
) & E1000_STATUS_TXOFF
)) {
1047 schedule_work(&adapter
->print_hang_task
);
1048 netif_stop_queue(netdev
);
1051 adapter
->total_tx_bytes
+= total_tx_bytes
;
1052 adapter
->total_tx_packets
+= total_tx_packets
;
1053 netdev
->stats
.tx_bytes
+= total_tx_bytes
;
1054 netdev
->stats
.tx_packets
+= total_tx_packets
;
1055 return (count
< tx_ring
->count
);
1059 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
1060 * @adapter: board private structure
1062 * the return value indicates whether actual cleaning was done, there
1063 * is no guarantee that everything was cleaned
1065 static bool e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
1066 int *work_done
, int work_to_do
)
1068 struct e1000_hw
*hw
= &adapter
->hw
;
1069 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
1070 struct net_device
*netdev
= adapter
->netdev
;
1071 struct pci_dev
*pdev
= adapter
->pdev
;
1072 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1073 struct e1000_buffer
*buffer_info
, *next_buffer
;
1074 struct e1000_ps_page
*ps_page
;
1075 struct sk_buff
*skb
;
1077 u32 length
, staterr
;
1078 int cleaned_count
= 0;
1080 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
1082 i
= rx_ring
->next_to_clean
;
1083 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
1084 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1085 buffer_info
= &rx_ring
->buffer_info
[i
];
1087 while (staterr
& E1000_RXD_STAT_DD
) {
1088 if (*work_done
>= work_to_do
)
1091 skb
= buffer_info
->skb
;
1092 rmb(); /* read descriptor and rx_buffer_info after status DD */
1094 /* in the packet split case this is header only */
1095 prefetch(skb
->data
- NET_IP_ALIGN
);
1098 if (i
== rx_ring
->count
)
1100 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
1103 next_buffer
= &rx_ring
->buffer_info
[i
];
1107 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1108 adapter
->rx_ps_bsize0
,
1110 buffer_info
->dma
= 0;
1112 /* see !EOP comment in other rx routine */
1113 if (!(staterr
& E1000_RXD_STAT_EOP
))
1114 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
1116 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
1117 e_dbg("Packet Split buffers didn't pick up the full "
1119 dev_kfree_skb_irq(skb
);
1120 if (staterr
& E1000_RXD_STAT_EOP
)
1121 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1125 if (staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) {
1126 dev_kfree_skb_irq(skb
);
1130 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
1133 e_dbg("Last part of the packet spanning multiple "
1135 dev_kfree_skb_irq(skb
);
1140 skb_put(skb
, length
);
1144 * this looks ugly, but it seems compiler issues make it
1145 * more efficient than reusing j
1147 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
1150 * page alloc/put takes too long and effects small packet
1151 * throughput, so unsplit small packets and save the alloc/put
1152 * only valid in softirq (napi) context to call kmap_*
1154 if (l1
&& (l1
<= copybreak
) &&
1155 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
1158 ps_page
= &buffer_info
->ps_pages
[0];
1161 * there is no documentation about how to call
1162 * kmap_atomic, so we can't hold the mapping
1165 dma_sync_single_for_cpu(&pdev
->dev
, ps_page
->dma
,
1166 PAGE_SIZE
, DMA_FROM_DEVICE
);
1167 vaddr
= kmap_atomic(ps_page
->page
, KM_SKB_DATA_SOFTIRQ
);
1168 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
1169 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
1170 dma_sync_single_for_device(&pdev
->dev
, ps_page
->dma
,
1171 PAGE_SIZE
, DMA_FROM_DEVICE
);
1173 /* remove the CRC */
1174 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
1182 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1183 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
1187 ps_page
= &buffer_info
->ps_pages
[j
];
1188 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1191 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
1192 ps_page
->page
= NULL
;
1194 skb
->data_len
+= length
;
1195 skb
->truesize
+= length
;
1198 /* strip the ethernet crc, problem is we're using pages now so
1199 * this whole operation can get a little cpu intensive
1201 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
1202 pskb_trim(skb
, skb
->len
- 4);
1205 total_rx_bytes
+= skb
->len
;
1208 e1000_rx_checksum(adapter
, staterr
, le16_to_cpu(
1209 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
1211 if (rx_desc
->wb
.upper
.header_status
&
1212 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
1213 adapter
->rx_hdr_split
++;
1215 e1000_receive_skb(adapter
, netdev
, skb
,
1216 staterr
, rx_desc
->wb
.middle
.vlan
);
1219 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
1220 buffer_info
->skb
= NULL
;
1222 /* return some buffers to hardware, one at a time is too slow */
1223 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
1224 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1228 /* use prefetched values */
1230 buffer_info
= next_buffer
;
1232 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1234 rx_ring
->next_to_clean
= i
;
1236 cleaned_count
= e1000_desc_unused(rx_ring
);
1238 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1240 adapter
->total_rx_bytes
+= total_rx_bytes
;
1241 adapter
->total_rx_packets
+= total_rx_packets
;
1242 netdev
->stats
.rx_bytes
+= total_rx_bytes
;
1243 netdev
->stats
.rx_packets
+= total_rx_packets
;
1248 * e1000_consume_page - helper function
1250 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
1255 skb
->data_len
+= length
;
1256 skb
->truesize
+= length
;
1260 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1261 * @adapter: board private structure
1263 * the return value indicates whether actual cleaning was done, there
1264 * is no guarantee that everything was cleaned
1267 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter
*adapter
,
1268 int *work_done
, int work_to_do
)
1270 struct net_device
*netdev
= adapter
->netdev
;
1271 struct pci_dev
*pdev
= adapter
->pdev
;
1272 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1273 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
1274 struct e1000_buffer
*buffer_info
, *next_buffer
;
1277 int cleaned_count
= 0;
1278 bool cleaned
= false;
1279 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
1281 i
= rx_ring
->next_to_clean
;
1282 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
1283 buffer_info
= &rx_ring
->buffer_info
[i
];
1285 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
1286 struct sk_buff
*skb
;
1289 if (*work_done
>= work_to_do
)
1292 rmb(); /* read descriptor and rx_buffer_info after status DD */
1294 status
= rx_desc
->status
;
1295 skb
= buffer_info
->skb
;
1296 buffer_info
->skb
= NULL
;
1299 if (i
== rx_ring
->count
)
1301 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
1304 next_buffer
= &rx_ring
->buffer_info
[i
];
1308 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
, PAGE_SIZE
,
1310 buffer_info
->dma
= 0;
1312 length
= le16_to_cpu(rx_desc
->length
);
1314 /* errors is only valid for DD + EOP descriptors */
1315 if (unlikely((status
& E1000_RXD_STAT_EOP
) &&
1316 (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
))) {
1317 /* recycle both page and skb */
1318 buffer_info
->skb
= skb
;
1319 /* an error means any chain goes out the window
1321 if (rx_ring
->rx_skb_top
)
1322 dev_kfree_skb(rx_ring
->rx_skb_top
);
1323 rx_ring
->rx_skb_top
= NULL
;
1327 #define rxtop rx_ring->rx_skb_top
1328 if (!(status
& E1000_RXD_STAT_EOP
)) {
1329 /* this descriptor is only the beginning (or middle) */
1331 /* this is the beginning of a chain */
1333 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
1336 /* this is the middle of a chain */
1337 skb_fill_page_desc(rxtop
,
1338 skb_shinfo(rxtop
)->nr_frags
,
1339 buffer_info
->page
, 0, length
);
1340 /* re-use the skb, only consumed the page */
1341 buffer_info
->skb
= skb
;
1343 e1000_consume_page(buffer_info
, rxtop
, length
);
1347 /* end of the chain */
1348 skb_fill_page_desc(rxtop
,
1349 skb_shinfo(rxtop
)->nr_frags
,
1350 buffer_info
->page
, 0, length
);
1351 /* re-use the current skb, we only consumed the
1353 buffer_info
->skb
= skb
;
1356 e1000_consume_page(buffer_info
, skb
, length
);
1358 /* no chain, got EOP, this buf is the packet
1359 * copybreak to save the put_page/alloc_page */
1360 if (length
<= copybreak
&&
1361 skb_tailroom(skb
) >= length
) {
1363 vaddr
= kmap_atomic(buffer_info
->page
,
1364 KM_SKB_DATA_SOFTIRQ
);
1365 memcpy(skb_tail_pointer(skb
), vaddr
,
1367 kunmap_atomic(vaddr
,
1368 KM_SKB_DATA_SOFTIRQ
);
1369 /* re-use the page, so don't erase
1370 * buffer_info->page */
1371 skb_put(skb
, length
);
1373 skb_fill_page_desc(skb
, 0,
1374 buffer_info
->page
, 0,
1376 e1000_consume_page(buffer_info
, skb
,
1382 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1383 e1000_rx_checksum(adapter
,
1385 ((u32
)(rx_desc
->errors
) << 24),
1386 le16_to_cpu(rx_desc
->csum
), skb
);
1388 /* probably a little skewed due to removing CRC */
1389 total_rx_bytes
+= skb
->len
;
1392 /* eth type trans needs skb->data to point to something */
1393 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1394 e_err("pskb_may_pull failed.\n");
1399 e1000_receive_skb(adapter
, netdev
, skb
, status
,
1403 rx_desc
->status
= 0;
1405 /* return some buffers to hardware, one at a time is too slow */
1406 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1407 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1411 /* use prefetched values */
1413 buffer_info
= next_buffer
;
1415 rx_ring
->next_to_clean
= i
;
1417 cleaned_count
= e1000_desc_unused(rx_ring
);
1419 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1421 adapter
->total_rx_bytes
+= total_rx_bytes
;
1422 adapter
->total_rx_packets
+= total_rx_packets
;
1423 netdev
->stats
.rx_bytes
+= total_rx_bytes
;
1424 netdev
->stats
.rx_packets
+= total_rx_packets
;
1429 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1430 * @adapter: board private structure
1432 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
)
1434 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1435 struct e1000_buffer
*buffer_info
;
1436 struct e1000_ps_page
*ps_page
;
1437 struct pci_dev
*pdev
= adapter
->pdev
;
1440 /* Free all the Rx ring sk_buffs */
1441 for (i
= 0; i
< rx_ring
->count
; i
++) {
1442 buffer_info
= &rx_ring
->buffer_info
[i
];
1443 if (buffer_info
->dma
) {
1444 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1445 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1446 adapter
->rx_buffer_len
,
1448 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1449 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
,
1452 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1453 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1454 adapter
->rx_ps_bsize0
,
1456 buffer_info
->dma
= 0;
1459 if (buffer_info
->page
) {
1460 put_page(buffer_info
->page
);
1461 buffer_info
->page
= NULL
;
1464 if (buffer_info
->skb
) {
1465 dev_kfree_skb(buffer_info
->skb
);
1466 buffer_info
->skb
= NULL
;
1469 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1470 ps_page
= &buffer_info
->ps_pages
[j
];
1473 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1476 put_page(ps_page
->page
);
1477 ps_page
->page
= NULL
;
1481 /* there also may be some cached data from a chained receive */
1482 if (rx_ring
->rx_skb_top
) {
1483 dev_kfree_skb(rx_ring
->rx_skb_top
);
1484 rx_ring
->rx_skb_top
= NULL
;
1487 /* Zero out the descriptor ring */
1488 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1490 rx_ring
->next_to_clean
= 0;
1491 rx_ring
->next_to_use
= 0;
1492 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1494 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
1495 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
1498 static void e1000e_downshift_workaround(struct work_struct
*work
)
1500 struct e1000_adapter
*adapter
= container_of(work
,
1501 struct e1000_adapter
, downshift_task
);
1503 e1000e_gig_downshift_workaround_ich8lan(&adapter
->hw
);
1507 * e1000_intr_msi - Interrupt Handler
1508 * @irq: interrupt number
1509 * @data: pointer to a network interface device structure
1511 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
1513 struct net_device
*netdev
= data
;
1514 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1515 struct e1000_hw
*hw
= &adapter
->hw
;
1516 u32 icr
= er32(ICR
);
1519 * read ICR disables interrupts using IAM
1522 if (icr
& E1000_ICR_LSC
) {
1523 hw
->mac
.get_link_status
= 1;
1525 * ICH8 workaround-- Call gig speed drop workaround on cable
1526 * disconnect (LSC) before accessing any PHY registers
1528 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1529 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1530 schedule_work(&adapter
->downshift_task
);
1533 * 80003ES2LAN workaround-- For packet buffer work-around on
1534 * link down event; disable receives here in the ISR and reset
1535 * adapter in watchdog
1537 if (netif_carrier_ok(netdev
) &&
1538 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1539 /* disable receives */
1540 u32 rctl
= er32(RCTL
);
1541 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1542 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1544 /* guard against interrupt when we're going down */
1545 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1546 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1549 if (napi_schedule_prep(&adapter
->napi
)) {
1550 adapter
->total_tx_bytes
= 0;
1551 adapter
->total_tx_packets
= 0;
1552 adapter
->total_rx_bytes
= 0;
1553 adapter
->total_rx_packets
= 0;
1554 __napi_schedule(&adapter
->napi
);
1561 * e1000_intr - Interrupt Handler
1562 * @irq: interrupt number
1563 * @data: pointer to a network interface device structure
1565 static irqreturn_t
e1000_intr(int irq
, void *data
)
1567 struct net_device
*netdev
= data
;
1568 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1569 struct e1000_hw
*hw
= &adapter
->hw
;
1570 u32 rctl
, icr
= er32(ICR
);
1572 if (!icr
|| test_bit(__E1000_DOWN
, &adapter
->state
))
1573 return IRQ_NONE
; /* Not our interrupt */
1576 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1577 * not set, then the adapter didn't send an interrupt
1579 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1583 * Interrupt Auto-Mask...upon reading ICR,
1584 * interrupts are masked. No need for the
1588 if (icr
& E1000_ICR_LSC
) {
1589 hw
->mac
.get_link_status
= 1;
1591 * ICH8 workaround-- Call gig speed drop workaround on cable
1592 * disconnect (LSC) before accessing any PHY registers
1594 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1595 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1596 schedule_work(&adapter
->downshift_task
);
1599 * 80003ES2LAN workaround--
1600 * For packet buffer work-around on link down event;
1601 * disable receives here in the ISR and
1602 * reset adapter in watchdog
1604 if (netif_carrier_ok(netdev
) &&
1605 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1606 /* disable receives */
1608 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1609 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1611 /* guard against interrupt when we're going down */
1612 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1613 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1616 if (napi_schedule_prep(&adapter
->napi
)) {
1617 adapter
->total_tx_bytes
= 0;
1618 adapter
->total_tx_packets
= 0;
1619 adapter
->total_rx_bytes
= 0;
1620 adapter
->total_rx_packets
= 0;
1621 __napi_schedule(&adapter
->napi
);
1627 static irqreturn_t
e1000_msix_other(int irq
, void *data
)
1629 struct net_device
*netdev
= data
;
1630 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1631 struct e1000_hw
*hw
= &adapter
->hw
;
1632 u32 icr
= er32(ICR
);
1634 if (!(icr
& E1000_ICR_INT_ASSERTED
)) {
1635 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1636 ew32(IMS
, E1000_IMS_OTHER
);
1640 if (icr
& adapter
->eiac_mask
)
1641 ew32(ICS
, (icr
& adapter
->eiac_mask
));
1643 if (icr
& E1000_ICR_OTHER
) {
1644 if (!(icr
& E1000_ICR_LSC
))
1645 goto no_link_interrupt
;
1646 hw
->mac
.get_link_status
= 1;
1647 /* guard against interrupt when we're going down */
1648 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1649 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1653 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1654 ew32(IMS
, E1000_IMS_LSC
| E1000_IMS_OTHER
);
1660 static irqreturn_t
e1000_intr_msix_tx(int irq
, void *data
)
1662 struct net_device
*netdev
= data
;
1663 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1664 struct e1000_hw
*hw
= &adapter
->hw
;
1665 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1668 adapter
->total_tx_bytes
= 0;
1669 adapter
->total_tx_packets
= 0;
1671 if (!e1000_clean_tx_irq(adapter
))
1672 /* Ring was not completely cleaned, so fire another interrupt */
1673 ew32(ICS
, tx_ring
->ims_val
);
1678 static irqreturn_t
e1000_intr_msix_rx(int irq
, void *data
)
1680 struct net_device
*netdev
= data
;
1681 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1683 /* Write the ITR value calculated at the end of the
1684 * previous interrupt.
1686 if (adapter
->rx_ring
->set_itr
) {
1687 writel(1000000000 / (adapter
->rx_ring
->itr_val
* 256),
1688 adapter
->hw
.hw_addr
+ adapter
->rx_ring
->itr_register
);
1689 adapter
->rx_ring
->set_itr
= 0;
1692 if (napi_schedule_prep(&adapter
->napi
)) {
1693 adapter
->total_rx_bytes
= 0;
1694 adapter
->total_rx_packets
= 0;
1695 __napi_schedule(&adapter
->napi
);
1701 * e1000_configure_msix - Configure MSI-X hardware
1703 * e1000_configure_msix sets up the hardware to properly
1704 * generate MSI-X interrupts.
1706 static void e1000_configure_msix(struct e1000_adapter
*adapter
)
1708 struct e1000_hw
*hw
= &adapter
->hw
;
1709 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1710 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1712 u32 ctrl_ext
, ivar
= 0;
1714 adapter
->eiac_mask
= 0;
1716 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1717 if (hw
->mac
.type
== e1000_82574
) {
1718 u32 rfctl
= er32(RFCTL
);
1719 rfctl
|= E1000_RFCTL_ACK_DIS
;
1723 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1724 /* Configure Rx vector */
1725 rx_ring
->ims_val
= E1000_IMS_RXQ0
;
1726 adapter
->eiac_mask
|= rx_ring
->ims_val
;
1727 if (rx_ring
->itr_val
)
1728 writel(1000000000 / (rx_ring
->itr_val
* 256),
1729 hw
->hw_addr
+ rx_ring
->itr_register
);
1731 writel(1, hw
->hw_addr
+ rx_ring
->itr_register
);
1732 ivar
= E1000_IVAR_INT_ALLOC_VALID
| vector
;
1734 /* Configure Tx vector */
1735 tx_ring
->ims_val
= E1000_IMS_TXQ0
;
1737 if (tx_ring
->itr_val
)
1738 writel(1000000000 / (tx_ring
->itr_val
* 256),
1739 hw
->hw_addr
+ tx_ring
->itr_register
);
1741 writel(1, hw
->hw_addr
+ tx_ring
->itr_register
);
1742 adapter
->eiac_mask
|= tx_ring
->ims_val
;
1743 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 8);
1745 /* set vector for Other Causes, e.g. link changes */
1747 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 16);
1748 if (rx_ring
->itr_val
)
1749 writel(1000000000 / (rx_ring
->itr_val
* 256),
1750 hw
->hw_addr
+ E1000_EITR_82574(vector
));
1752 writel(1, hw
->hw_addr
+ E1000_EITR_82574(vector
));
1754 /* Cause Tx interrupts on every write back */
1759 /* enable MSI-X PBA support */
1760 ctrl_ext
= er32(CTRL_EXT
);
1761 ctrl_ext
|= E1000_CTRL_EXT_PBA_CLR
;
1763 /* Auto-Mask Other interrupts upon ICR read */
1764 #define E1000_EIAC_MASK_82574 0x01F00000
1765 ew32(IAM
, ~E1000_EIAC_MASK_82574
| E1000_IMS_OTHER
);
1766 ctrl_ext
|= E1000_CTRL_EXT_EIAME
;
1767 ew32(CTRL_EXT
, ctrl_ext
);
1771 void e1000e_reset_interrupt_capability(struct e1000_adapter
*adapter
)
1773 if (adapter
->msix_entries
) {
1774 pci_disable_msix(adapter
->pdev
);
1775 kfree(adapter
->msix_entries
);
1776 adapter
->msix_entries
= NULL
;
1777 } else if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1778 pci_disable_msi(adapter
->pdev
);
1779 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
1784 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1786 * Attempt to configure interrupts using the best available
1787 * capabilities of the hardware and kernel.
1789 void e1000e_set_interrupt_capability(struct e1000_adapter
*adapter
)
1794 switch (adapter
->int_mode
) {
1795 case E1000E_INT_MODE_MSIX
:
1796 if (adapter
->flags
& FLAG_HAS_MSIX
) {
1797 adapter
->num_vectors
= 3; /* RxQ0, TxQ0 and other */
1798 adapter
->msix_entries
= kcalloc(adapter
->num_vectors
,
1799 sizeof(struct msix_entry
),
1801 if (adapter
->msix_entries
) {
1802 for (i
= 0; i
< adapter
->num_vectors
; i
++)
1803 adapter
->msix_entries
[i
].entry
= i
;
1805 err
= pci_enable_msix(adapter
->pdev
,
1806 adapter
->msix_entries
,
1807 adapter
->num_vectors
);
1812 /* MSI-X failed, so fall through and try MSI */
1813 e_err("Failed to initialize MSI-X interrupts. "
1814 "Falling back to MSI interrupts.\n");
1815 e1000e_reset_interrupt_capability(adapter
);
1817 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1819 case E1000E_INT_MODE_MSI
:
1820 if (!pci_enable_msi(adapter
->pdev
)) {
1821 adapter
->flags
|= FLAG_MSI_ENABLED
;
1823 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1824 e_err("Failed to initialize MSI interrupts. Falling "
1825 "back to legacy interrupts.\n");
1828 case E1000E_INT_MODE_LEGACY
:
1829 /* Don't do anything; this is the system default */
1833 /* store the number of vectors being used */
1834 adapter
->num_vectors
= 1;
1838 * e1000_request_msix - Initialize MSI-X interrupts
1840 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1843 static int e1000_request_msix(struct e1000_adapter
*adapter
)
1845 struct net_device
*netdev
= adapter
->netdev
;
1846 int err
= 0, vector
= 0;
1848 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1849 sprintf(adapter
->rx_ring
->name
, "%s-rx-0", netdev
->name
);
1851 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1852 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1853 e1000_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
1857 adapter
->rx_ring
->itr_register
= E1000_EITR_82574(vector
);
1858 adapter
->rx_ring
->itr_val
= adapter
->itr
;
1861 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1862 sprintf(adapter
->tx_ring
->name
, "%s-tx-0", netdev
->name
);
1864 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1865 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1866 e1000_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
1870 adapter
->tx_ring
->itr_register
= E1000_EITR_82574(vector
);
1871 adapter
->tx_ring
->itr_val
= adapter
->itr
;
1874 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1875 e1000_msix_other
, 0, netdev
->name
, netdev
);
1879 e1000_configure_msix(adapter
);
1886 * e1000_request_irq - initialize interrupts
1888 * Attempts to configure interrupts using the best available
1889 * capabilities of the hardware and kernel.
1891 static int e1000_request_irq(struct e1000_adapter
*adapter
)
1893 struct net_device
*netdev
= adapter
->netdev
;
1896 if (adapter
->msix_entries
) {
1897 err
= e1000_request_msix(adapter
);
1900 /* fall back to MSI */
1901 e1000e_reset_interrupt_capability(adapter
);
1902 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1903 e1000e_set_interrupt_capability(adapter
);
1905 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1906 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi
, 0,
1907 netdev
->name
, netdev
);
1911 /* fall back to legacy interrupt */
1912 e1000e_reset_interrupt_capability(adapter
);
1913 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1916 err
= request_irq(adapter
->pdev
->irq
, e1000_intr
, IRQF_SHARED
,
1917 netdev
->name
, netdev
);
1919 e_err("Unable to allocate interrupt, Error: %d\n", err
);
1924 static void e1000_free_irq(struct e1000_adapter
*adapter
)
1926 struct net_device
*netdev
= adapter
->netdev
;
1928 if (adapter
->msix_entries
) {
1931 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1934 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1937 /* Other Causes interrupt vector */
1938 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1942 free_irq(adapter
->pdev
->irq
, netdev
);
1946 * e1000_irq_disable - Mask off interrupt generation on the NIC
1948 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
1950 struct e1000_hw
*hw
= &adapter
->hw
;
1953 if (adapter
->msix_entries
)
1954 ew32(EIAC_82574
, 0);
1957 if (adapter
->msix_entries
) {
1959 for (i
= 0; i
< adapter
->num_vectors
; i
++)
1960 synchronize_irq(adapter
->msix_entries
[i
].vector
);
1962 synchronize_irq(adapter
->pdev
->irq
);
1967 * e1000_irq_enable - Enable default interrupt generation settings
1969 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
1971 struct e1000_hw
*hw
= &adapter
->hw
;
1973 if (adapter
->msix_entries
) {
1974 ew32(EIAC_82574
, adapter
->eiac_mask
& E1000_EIAC_MASK_82574
);
1975 ew32(IMS
, adapter
->eiac_mask
| E1000_IMS_OTHER
| E1000_IMS_LSC
);
1977 ew32(IMS
, IMS_ENABLE_MASK
);
1983 * e1000_get_hw_control - get control of the h/w from f/w
1984 * @adapter: address of board private structure
1986 * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1987 * For ASF and Pass Through versions of f/w this means that
1988 * the driver is loaded. For AMT version (only with 82573)
1989 * of the f/w this means that the network i/f is open.
1991 static void e1000_get_hw_control(struct e1000_adapter
*adapter
)
1993 struct e1000_hw
*hw
= &adapter
->hw
;
1997 /* Let firmware know the driver has taken over */
1998 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2000 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
2001 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2002 ctrl_ext
= er32(CTRL_EXT
);
2003 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
2008 * e1000_release_hw_control - release control of the h/w to f/w
2009 * @adapter: address of board private structure
2011 * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2012 * For ASF and Pass Through versions of f/w this means that the
2013 * driver is no longer loaded. For AMT version (only with 82573) i
2014 * of the f/w this means that the network i/f is closed.
2017 static void e1000_release_hw_control(struct e1000_adapter
*adapter
)
2019 struct e1000_hw
*hw
= &adapter
->hw
;
2023 /* Let firmware taken over control of h/w */
2024 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2026 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
2027 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2028 ctrl_ext
= er32(CTRL_EXT
);
2029 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
2034 * @e1000_alloc_ring - allocate memory for a ring structure
2036 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
2037 struct e1000_ring
*ring
)
2039 struct pci_dev
*pdev
= adapter
->pdev
;
2041 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
2050 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
2051 * @adapter: board private structure
2053 * Return 0 on success, negative on failure
2055 int e1000e_setup_tx_resources(struct e1000_adapter
*adapter
)
2057 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2058 int err
= -ENOMEM
, size
;
2060 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2061 tx_ring
->buffer_info
= vmalloc(size
);
2062 if (!tx_ring
->buffer_info
)
2064 memset(tx_ring
->buffer_info
, 0, size
);
2066 /* round up to nearest 4K */
2067 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2068 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
2070 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
2074 tx_ring
->next_to_use
= 0;
2075 tx_ring
->next_to_clean
= 0;
2079 vfree(tx_ring
->buffer_info
);
2080 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2085 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
2086 * @adapter: board private structure
2088 * Returns 0 on success, negative on failure
2090 int e1000e_setup_rx_resources(struct e1000_adapter
*adapter
)
2092 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2093 struct e1000_buffer
*buffer_info
;
2094 int i
, size
, desc_len
, err
= -ENOMEM
;
2096 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2097 rx_ring
->buffer_info
= vmalloc(size
);
2098 if (!rx_ring
->buffer_info
)
2100 memset(rx_ring
->buffer_info
, 0, size
);
2102 for (i
= 0; i
< rx_ring
->count
; i
++) {
2103 buffer_info
= &rx_ring
->buffer_info
[i
];
2104 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
2105 sizeof(struct e1000_ps_page
),
2107 if (!buffer_info
->ps_pages
)
2111 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
2113 /* Round up to nearest 4K */
2114 rx_ring
->size
= rx_ring
->count
* desc_len
;
2115 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
2117 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
2121 rx_ring
->next_to_clean
= 0;
2122 rx_ring
->next_to_use
= 0;
2123 rx_ring
->rx_skb_top
= NULL
;
2128 for (i
= 0; i
< rx_ring
->count
; i
++) {
2129 buffer_info
= &rx_ring
->buffer_info
[i
];
2130 kfree(buffer_info
->ps_pages
);
2133 vfree(rx_ring
->buffer_info
);
2134 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2139 * e1000_clean_tx_ring - Free Tx Buffers
2140 * @adapter: board private structure
2142 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
)
2144 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2145 struct e1000_buffer
*buffer_info
;
2149 for (i
= 0; i
< tx_ring
->count
; i
++) {
2150 buffer_info
= &tx_ring
->buffer_info
[i
];
2151 e1000_put_txbuf(adapter
, buffer_info
);
2154 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2155 memset(tx_ring
->buffer_info
, 0, size
);
2157 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2159 tx_ring
->next_to_use
= 0;
2160 tx_ring
->next_to_clean
= 0;
2162 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
2163 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
2167 * e1000e_free_tx_resources - Free Tx Resources per Queue
2168 * @adapter: board private structure
2170 * Free all transmit software resources
2172 void e1000e_free_tx_resources(struct e1000_adapter
*adapter
)
2174 struct pci_dev
*pdev
= adapter
->pdev
;
2175 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2177 e1000_clean_tx_ring(adapter
);
2179 vfree(tx_ring
->buffer_info
);
2180 tx_ring
->buffer_info
= NULL
;
2182 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
2184 tx_ring
->desc
= NULL
;
2188 * e1000e_free_rx_resources - Free Rx Resources
2189 * @adapter: board private structure
2191 * Free all receive software resources
2194 void e1000e_free_rx_resources(struct e1000_adapter
*adapter
)
2196 struct pci_dev
*pdev
= adapter
->pdev
;
2197 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2200 e1000_clean_rx_ring(adapter
);
2202 for (i
= 0; i
< rx_ring
->count
; i
++) {
2203 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
2206 vfree(rx_ring
->buffer_info
);
2207 rx_ring
->buffer_info
= NULL
;
2209 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
2211 rx_ring
->desc
= NULL
;
2215 * e1000_update_itr - update the dynamic ITR value based on statistics
2216 * @adapter: pointer to adapter
2217 * @itr_setting: current adapter->itr
2218 * @packets: the number of packets during this measurement interval
2219 * @bytes: the number of bytes during this measurement interval
2221 * Stores a new ITR value based on packets and byte
2222 * counts during the last interrupt. The advantage of per interrupt
2223 * computation is faster updates and more accurate ITR for the current
2224 * traffic pattern. Constants in this function were computed
2225 * based on theoretical maximum wire speed and thresholds were set based
2226 * on testing data as well as attempting to minimize response time
2227 * while increasing bulk throughput. This functionality is controlled
2228 * by the InterruptThrottleRate module parameter.
2230 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
2231 u16 itr_setting
, int packets
,
2234 unsigned int retval
= itr_setting
;
2237 goto update_itr_done
;
2239 switch (itr_setting
) {
2240 case lowest_latency
:
2241 /* handle TSO and jumbo frames */
2242 if (bytes
/packets
> 8000)
2243 retval
= bulk_latency
;
2244 else if ((packets
< 5) && (bytes
> 512)) {
2245 retval
= low_latency
;
2248 case low_latency
: /* 50 usec aka 20000 ints/s */
2249 if (bytes
> 10000) {
2250 /* this if handles the TSO accounting */
2251 if (bytes
/packets
> 8000) {
2252 retval
= bulk_latency
;
2253 } else if ((packets
< 10) || ((bytes
/packets
) > 1200)) {
2254 retval
= bulk_latency
;
2255 } else if ((packets
> 35)) {
2256 retval
= lowest_latency
;
2258 } else if (bytes
/packets
> 2000) {
2259 retval
= bulk_latency
;
2260 } else if (packets
<= 2 && bytes
< 512) {
2261 retval
= lowest_latency
;
2264 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2265 if (bytes
> 25000) {
2267 retval
= low_latency
;
2269 } else if (bytes
< 6000) {
2270 retval
= low_latency
;
2279 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2281 struct e1000_hw
*hw
= &adapter
->hw
;
2283 u32 new_itr
= adapter
->itr
;
2285 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2286 if (adapter
->link_speed
!= SPEED_1000
) {
2292 adapter
->tx_itr
= e1000_update_itr(adapter
,
2294 adapter
->total_tx_packets
,
2295 adapter
->total_tx_bytes
);
2296 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2297 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
2298 adapter
->tx_itr
= low_latency
;
2300 adapter
->rx_itr
= e1000_update_itr(adapter
,
2302 adapter
->total_rx_packets
,
2303 adapter
->total_rx_bytes
);
2304 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2305 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2306 adapter
->rx_itr
= low_latency
;
2308 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2310 switch (current_itr
) {
2311 /* counts and packets in update_itr are dependent on these numbers */
2312 case lowest_latency
:
2316 new_itr
= 20000; /* aka hwitr = ~200 */
2326 if (new_itr
!= adapter
->itr
) {
2328 * this attempts to bias the interrupt rate towards Bulk
2329 * by adding intermediate steps when interrupt rate is
2332 new_itr
= new_itr
> adapter
->itr
?
2333 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2335 adapter
->itr
= new_itr
;
2336 adapter
->rx_ring
->itr_val
= new_itr
;
2337 if (adapter
->msix_entries
)
2338 adapter
->rx_ring
->set_itr
= 1;
2340 ew32(ITR
, 1000000000 / (new_itr
* 256));
2345 * e1000_alloc_queues - Allocate memory for all rings
2346 * @adapter: board private structure to initialize
2348 static int __devinit
e1000_alloc_queues(struct e1000_adapter
*adapter
)
2350 adapter
->tx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
2351 if (!adapter
->tx_ring
)
2354 adapter
->rx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
2355 if (!adapter
->rx_ring
)
2360 e_err("Unable to allocate memory for queues\n");
2361 kfree(adapter
->rx_ring
);
2362 kfree(adapter
->tx_ring
);
2367 * e1000_clean - NAPI Rx polling callback
2368 * @napi: struct associated with this polling callback
2369 * @budget: amount of packets driver is allowed to process this poll
2371 static int e1000_clean(struct napi_struct
*napi
, int budget
)
2373 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
2374 struct e1000_hw
*hw
= &adapter
->hw
;
2375 struct net_device
*poll_dev
= adapter
->netdev
;
2376 int tx_cleaned
= 1, work_done
= 0;
2378 adapter
= netdev_priv(poll_dev
);
2380 if (adapter
->msix_entries
&&
2381 !(adapter
->rx_ring
->ims_val
& adapter
->tx_ring
->ims_val
))
2384 tx_cleaned
= e1000_clean_tx_irq(adapter
);
2387 adapter
->clean_rx(adapter
, &work_done
, budget
);
2392 /* If budget not fully consumed, exit the polling mode */
2393 if (work_done
< budget
) {
2394 if (adapter
->itr_setting
& 3)
2395 e1000_set_itr(adapter
);
2396 napi_complete(napi
);
2397 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
2398 if (adapter
->msix_entries
)
2399 ew32(IMS
, adapter
->rx_ring
->ims_val
);
2401 e1000_irq_enable(adapter
);
2408 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
2410 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2411 struct e1000_hw
*hw
= &adapter
->hw
;
2414 /* don't update vlan cookie if already programmed */
2415 if ((adapter
->hw
.mng_cookie
.status
&
2416 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2417 (vid
== adapter
->mng_vlan_id
))
2420 /* add VID to filter table */
2421 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2422 index
= (vid
>> 5) & 0x7F;
2423 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2424 vfta
|= (1 << (vid
& 0x1F));
2425 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2429 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
2431 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2432 struct e1000_hw
*hw
= &adapter
->hw
;
2435 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2436 e1000_irq_disable(adapter
);
2437 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
2439 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2440 e1000_irq_enable(adapter
);
2442 if ((adapter
->hw
.mng_cookie
.status
&
2443 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2444 (vid
== adapter
->mng_vlan_id
)) {
2445 /* release control to f/w */
2446 e1000_release_hw_control(adapter
);
2450 /* remove VID from filter table */
2451 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2452 index
= (vid
>> 5) & 0x7F;
2453 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2454 vfta
&= ~(1 << (vid
& 0x1F));
2455 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2459 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
2461 struct net_device
*netdev
= adapter
->netdev
;
2462 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
2463 u16 old_vid
= adapter
->mng_vlan_id
;
2465 if (!adapter
->vlgrp
)
2468 if (!vlan_group_get_device(adapter
->vlgrp
, vid
)) {
2469 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2470 if (adapter
->hw
.mng_cookie
.status
&
2471 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
2472 e1000_vlan_rx_add_vid(netdev
, vid
);
2473 adapter
->mng_vlan_id
= vid
;
2476 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) &&
2478 !vlan_group_get_device(adapter
->vlgrp
, old_vid
))
2479 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
2481 adapter
->mng_vlan_id
= vid
;
2486 static void e1000_vlan_rx_register(struct net_device
*netdev
,
2487 struct vlan_group
*grp
)
2489 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2490 struct e1000_hw
*hw
= &adapter
->hw
;
2493 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2494 e1000_irq_disable(adapter
);
2495 adapter
->vlgrp
= grp
;
2498 /* enable VLAN tag insert/strip */
2500 ctrl
|= E1000_CTRL_VME
;
2503 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2504 /* enable VLAN receive filtering */
2506 rctl
&= ~E1000_RCTL_CFIEN
;
2508 e1000_update_mng_vlan(adapter
);
2511 /* disable VLAN tag insert/strip */
2513 ctrl
&= ~E1000_CTRL_VME
;
2516 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2517 if (adapter
->mng_vlan_id
!=
2518 (u16
)E1000_MNG_VLAN_NONE
) {
2519 e1000_vlan_rx_kill_vid(netdev
,
2520 adapter
->mng_vlan_id
);
2521 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2526 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2527 e1000_irq_enable(adapter
);
2530 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
2534 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
2536 if (!adapter
->vlgrp
)
2539 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
2540 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
2542 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
2546 static void e1000_init_manageability_pt(struct e1000_adapter
*adapter
)
2548 struct e1000_hw
*hw
= &adapter
->hw
;
2549 u32 manc
, manc2h
, mdef
, i
, j
;
2551 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
2557 * enable receiving management packets to the host. this will probably
2558 * generate destination unreachable messages from the host OS, but
2559 * the packets will be handled on SMBUS
2561 manc
|= E1000_MANC_EN_MNG2HOST
;
2562 manc2h
= er32(MANC2H
);
2564 switch (hw
->mac
.type
) {
2566 manc2h
|= (E1000_MANC2H_PORT_623
| E1000_MANC2H_PORT_664
);
2571 * Check if IPMI pass-through decision filter already exists;
2574 for (i
= 0, j
= 0; i
< 8; i
++) {
2575 mdef
= er32(MDEF(i
));
2577 /* Ignore filters with anything other than IPMI ports */
2578 if (mdef
& ~(E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2581 /* Enable this decision filter in MANC2H */
2588 if (j
== (E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2591 /* Create new decision filter in an empty filter */
2592 for (i
= 0, j
= 0; i
< 8; i
++)
2593 if (er32(MDEF(i
)) == 0) {
2594 ew32(MDEF(i
), (E1000_MDEF_PORT_623
|
2595 E1000_MDEF_PORT_664
));
2602 e_warn("Unable to create IPMI pass-through filter\n");
2606 ew32(MANC2H
, manc2h
);
2611 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
2612 * @adapter: board private structure
2614 * Configure the Tx unit of the MAC after a reset.
2616 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
2618 struct e1000_hw
*hw
= &adapter
->hw
;
2619 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2621 u32 tdlen
, tctl
, tipg
, tarc
;
2624 /* Setup the HW Tx Head and Tail descriptor pointers */
2625 tdba
= tx_ring
->dma
;
2626 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2627 ew32(TDBAL
, (tdba
& DMA_BIT_MASK(32)));
2628 ew32(TDBAH
, (tdba
>> 32));
2632 tx_ring
->head
= E1000_TDH
;
2633 tx_ring
->tail
= E1000_TDT
;
2635 /* Set the default values for the Tx Inter Packet Gap timer */
2636 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
; /* 8 */
2637 ipgr1
= DEFAULT_82543_TIPG_IPGR1
; /* 8 */
2638 ipgr2
= DEFAULT_82543_TIPG_IPGR2
; /* 6 */
2640 if (adapter
->flags
& FLAG_TIPG_MEDIUM_FOR_80003ESLAN
)
2641 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
; /* 7 */
2643 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
2644 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
2647 /* Set the Tx Interrupt Delay register */
2648 ew32(TIDV
, adapter
->tx_int_delay
);
2649 /* Tx irq moderation */
2650 ew32(TADV
, adapter
->tx_abs_int_delay
);
2652 /* Program the Transmit Control Register */
2654 tctl
&= ~E1000_TCTL_CT
;
2655 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
2656 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
2658 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
2659 tarc
= er32(TARC(0));
2661 * set the speed mode bit, we'll clear it if we're not at
2662 * gigabit link later
2664 #define SPEED_MODE_BIT (1 << 21)
2665 tarc
|= SPEED_MODE_BIT
;
2666 ew32(TARC(0), tarc
);
2669 /* errata: program both queues to unweighted RR */
2670 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
2671 tarc
= er32(TARC(0));
2673 ew32(TARC(0), tarc
);
2674 tarc
= er32(TARC(1));
2676 ew32(TARC(1), tarc
);
2679 /* Setup Transmit Descriptor Settings for eop descriptor */
2680 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
2682 /* only set IDE if we are delaying interrupts using the timers */
2683 if (adapter
->tx_int_delay
)
2684 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
2686 /* enable Report Status bit */
2687 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
2691 e1000e_config_collision_dist(hw
);
2695 * e1000_setup_rctl - configure the receive control registers
2696 * @adapter: Board private structure
2698 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2699 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2700 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
2702 struct e1000_hw
*hw
= &adapter
->hw
;
2707 /* Workaround Si errata on 82579 - configure jumbo frame flow */
2708 if (hw
->mac
.type
== e1000_pch2lan
) {
2711 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
)
2712 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, true);
2714 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, false);
2717 /* Program MC offset vector base */
2719 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
2720 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
2721 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
2722 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
2724 /* Do not Store bad packets */
2725 rctl
&= ~E1000_RCTL_SBP
;
2727 /* Enable Long Packet receive */
2728 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
2729 rctl
&= ~E1000_RCTL_LPE
;
2731 rctl
|= E1000_RCTL_LPE
;
2733 /* Some systems expect that the CRC is included in SMBUS traffic. The
2734 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2735 * host memory when this is enabled
2737 if (adapter
->flags2
& FLAG2_CRC_STRIPPING
)
2738 rctl
|= E1000_RCTL_SECRC
;
2740 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
2741 if ((hw
->phy
.type
== e1000_phy_82577
) && (rctl
& E1000_RCTL_LPE
)) {
2744 e1e_rphy(hw
, PHY_REG(770, 26), &phy_data
);
2746 phy_data
|= (1 << 2);
2747 e1e_wphy(hw
, PHY_REG(770, 26), phy_data
);
2749 e1e_rphy(hw
, 22, &phy_data
);
2751 phy_data
|= (1 << 14);
2752 e1e_wphy(hw
, 0x10, 0x2823);
2753 e1e_wphy(hw
, 0x11, 0x0003);
2754 e1e_wphy(hw
, 22, phy_data
);
2757 /* Setup buffer sizes */
2758 rctl
&= ~E1000_RCTL_SZ_4096
;
2759 rctl
|= E1000_RCTL_BSEX
;
2760 switch (adapter
->rx_buffer_len
) {
2763 rctl
|= E1000_RCTL_SZ_2048
;
2764 rctl
&= ~E1000_RCTL_BSEX
;
2767 rctl
|= E1000_RCTL_SZ_4096
;
2770 rctl
|= E1000_RCTL_SZ_8192
;
2773 rctl
|= E1000_RCTL_SZ_16384
;
2778 * 82571 and greater support packet-split where the protocol
2779 * header is placed in skb->data and the packet data is
2780 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2781 * In the case of a non-split, skb->data is linearly filled,
2782 * followed by the page buffers. Therefore, skb->data is
2783 * sized to hold the largest protocol header.
2785 * allocations using alloc_page take too long for regular MTU
2786 * so only enable packet split for jumbo frames
2788 * Using pages when the page size is greater than 16k wastes
2789 * a lot of memory, since we allocate 3 pages at all times
2792 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
2793 if (!(adapter
->flags
& FLAG_HAS_ERT
) && (pages
<= 3) &&
2794 (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
2795 adapter
->rx_ps_pages
= pages
;
2797 adapter
->rx_ps_pages
= 0;
2799 if (adapter
->rx_ps_pages
) {
2800 /* Configure extra packet-split registers */
2801 rfctl
= er32(RFCTL
);
2802 rfctl
|= E1000_RFCTL_EXTEN
;
2804 * disable packet split support for IPv6 extension headers,
2805 * because some malformed IPv6 headers can hang the Rx
2807 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
2808 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
2812 /* Enable Packet split descriptors */
2813 rctl
|= E1000_RCTL_DTYP_PS
;
2815 psrctl
|= adapter
->rx_ps_bsize0
>>
2816 E1000_PSRCTL_BSIZE0_SHIFT
;
2818 switch (adapter
->rx_ps_pages
) {
2820 psrctl
|= PAGE_SIZE
<<
2821 E1000_PSRCTL_BSIZE3_SHIFT
;
2823 psrctl
|= PAGE_SIZE
<<
2824 E1000_PSRCTL_BSIZE2_SHIFT
;
2826 psrctl
|= PAGE_SIZE
>>
2827 E1000_PSRCTL_BSIZE1_SHIFT
;
2831 ew32(PSRCTL
, psrctl
);
2835 /* just started the receive unit, no need to restart */
2836 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
2840 * e1000_configure_rx - Configure Receive Unit after Reset
2841 * @adapter: board private structure
2843 * Configure the Rx unit of the MAC after a reset.
2845 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
2847 struct e1000_hw
*hw
= &adapter
->hw
;
2848 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2850 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
2852 if (adapter
->rx_ps_pages
) {
2853 /* this is a 32 byte descriptor */
2854 rdlen
= rx_ring
->count
*
2855 sizeof(union e1000_rx_desc_packet_split
);
2856 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
2857 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
2858 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2859 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2860 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
2861 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
2863 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2864 adapter
->clean_rx
= e1000_clean_rx_irq
;
2865 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
2868 /* disable receives while setting up the descriptors */
2870 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2874 /* set the Receive Delay Timer Register */
2875 ew32(RDTR
, adapter
->rx_int_delay
);
2877 /* irq moderation */
2878 ew32(RADV
, adapter
->rx_abs_int_delay
);
2879 if (adapter
->itr_setting
!= 0)
2880 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
2882 ctrl_ext
= er32(CTRL_EXT
);
2883 /* Auto-Mask interrupts upon ICR access */
2884 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
2885 ew32(IAM
, 0xffffffff);
2886 ew32(CTRL_EXT
, ctrl_ext
);
2890 * Setup the HW Rx Head and Tail Descriptor Pointers and
2891 * the Base and Length of the Rx Descriptor Ring
2893 rdba
= rx_ring
->dma
;
2894 ew32(RDBAL
, (rdba
& DMA_BIT_MASK(32)));
2895 ew32(RDBAH
, (rdba
>> 32));
2899 rx_ring
->head
= E1000_RDH
;
2900 rx_ring
->tail
= E1000_RDT
;
2902 /* Enable Receive Checksum Offload for TCP and UDP */
2903 rxcsum
= er32(RXCSUM
);
2904 if (adapter
->flags
& FLAG_RX_CSUM_ENABLED
) {
2905 rxcsum
|= E1000_RXCSUM_TUOFL
;
2908 * IPv4 payload checksum for UDP fragments must be
2909 * used in conjunction with packet-split.
2911 if (adapter
->rx_ps_pages
)
2912 rxcsum
|= E1000_RXCSUM_IPPCSE
;
2914 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2915 /* no need to clear IPPCSE as it defaults to 0 */
2917 ew32(RXCSUM
, rxcsum
);
2920 * Enable early receives on supported devices, only takes effect when
2921 * packet size is equal or larger than the specified value (in 8 byte
2922 * units), e.g. using jumbo frames when setting to E1000_ERT_2048
2924 if (adapter
->flags
& FLAG_HAS_ERT
) {
2925 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
2926 u32 rxdctl
= er32(RXDCTL(0));
2927 ew32(RXDCTL(0), rxdctl
| 0x3);
2928 ew32(ERT
, E1000_ERT_2048
| (1 << 13));
2930 * With jumbo frames and early-receive enabled,
2931 * excessive C-state transition latencies result in
2932 * dropped transactions.
2934 pm_qos_update_request(
2935 &adapter
->netdev
->pm_qos_req
, 55);
2937 pm_qos_update_request(
2938 &adapter
->netdev
->pm_qos_req
,
2939 PM_QOS_DEFAULT_VALUE
);
2943 /* Enable Receives */
2948 * e1000_update_mc_addr_list - Update Multicast addresses
2949 * @hw: pointer to the HW structure
2950 * @mc_addr_list: array of multicast addresses to program
2951 * @mc_addr_count: number of multicast addresses to program
2953 * Updates the Multicast Table Array.
2954 * The caller must have a packed mc_addr_list of multicast addresses.
2956 static void e1000_update_mc_addr_list(struct e1000_hw
*hw
, u8
*mc_addr_list
,
2959 hw
->mac
.ops
.update_mc_addr_list(hw
, mc_addr_list
, mc_addr_count
);
2963 * e1000_set_multi - Multicast and Promiscuous mode set
2964 * @netdev: network interface device structure
2966 * The set_multi entry point is called whenever the multicast address
2967 * list or the network interface flags are updated. This routine is
2968 * responsible for configuring the hardware for proper multicast,
2969 * promiscuous mode, and all-multi behavior.
2971 static void e1000_set_multi(struct net_device
*netdev
)
2973 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2974 struct e1000_hw
*hw
= &adapter
->hw
;
2975 struct netdev_hw_addr
*ha
;
2980 /* Check for Promiscuous and All Multicast modes */
2984 if (netdev
->flags
& IFF_PROMISC
) {
2985 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2986 rctl
&= ~E1000_RCTL_VFE
;
2988 if (netdev
->flags
& IFF_ALLMULTI
) {
2989 rctl
|= E1000_RCTL_MPE
;
2990 rctl
&= ~E1000_RCTL_UPE
;
2992 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2994 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
2995 rctl
|= E1000_RCTL_VFE
;
3000 if (!netdev_mc_empty(netdev
)) {
3001 mta_list
= kmalloc(netdev_mc_count(netdev
) * 6, GFP_ATOMIC
);
3005 /* prepare a packed array of only addresses. */
3007 netdev_for_each_mc_addr(ha
, netdev
)
3008 memcpy(mta_list
+ (i
++ * ETH_ALEN
), ha
->addr
, ETH_ALEN
);
3010 e1000_update_mc_addr_list(hw
, mta_list
, i
);
3014 * if we're called from probe, we might not have
3015 * anything to do here, so clear out the list
3017 e1000_update_mc_addr_list(hw
, NULL
, 0);
3022 * e1000_configure - configure the hardware for Rx and Tx
3023 * @adapter: private board structure
3025 static void e1000_configure(struct e1000_adapter
*adapter
)
3027 e1000_set_multi(adapter
->netdev
);
3029 e1000_restore_vlan(adapter
);
3030 e1000_init_manageability_pt(adapter
);
3032 e1000_configure_tx(adapter
);
3033 e1000_setup_rctl(adapter
);
3034 e1000_configure_rx(adapter
);
3035 adapter
->alloc_rx_buf(adapter
, e1000_desc_unused(adapter
->rx_ring
));
3039 * e1000e_power_up_phy - restore link in case the phy was powered down
3040 * @adapter: address of board private structure
3042 * The phy may be powered down to save power and turn off link when the
3043 * driver is unloaded and wake on lan is not enabled (among others)
3044 * *** this routine MUST be followed by a call to e1000e_reset ***
3046 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
3048 if (adapter
->hw
.phy
.ops
.power_up
)
3049 adapter
->hw
.phy
.ops
.power_up(&adapter
->hw
);
3051 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
3055 * e1000_power_down_phy - Power down the PHY
3057 * Power down the PHY so no link is implied when interface is down.
3058 * The PHY cannot be powered down if management or WoL is active.
3060 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
3062 /* WoL is enabled */
3066 if (adapter
->hw
.phy
.ops
.power_down
)
3067 adapter
->hw
.phy
.ops
.power_down(&adapter
->hw
);
3071 * e1000e_reset - bring the hardware into a known good state
3073 * This function boots the hardware and enables some settings that
3074 * require a configuration cycle of the hardware - those cannot be
3075 * set/changed during runtime. After reset the device needs to be
3076 * properly configured for Rx, Tx etc.
3078 void e1000e_reset(struct e1000_adapter
*adapter
)
3080 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3081 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
3082 struct e1000_hw
*hw
= &adapter
->hw
;
3083 u32 tx_space
, min_tx_space
, min_rx_space
;
3084 u32 pba
= adapter
->pba
;
3087 /* reset Packet Buffer Allocation to default */
3090 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3092 * To maintain wire speed transmits, the Tx FIFO should be
3093 * large enough to accommodate two full transmit packets,
3094 * rounded up to the next 1KB and expressed in KB. Likewise,
3095 * the Rx FIFO should be large enough to accommodate at least
3096 * one full receive packet and is similarly rounded up and
3100 /* upper 16 bits has Tx packet buffer allocation size in KB */
3101 tx_space
= pba
>> 16;
3102 /* lower 16 bits has Rx packet buffer allocation size in KB */
3105 * the Tx fifo also stores 16 bytes of information about the tx
3106 * but don't include ethernet FCS because hardware appends it
3108 min_tx_space
= (adapter
->max_frame_size
+
3109 sizeof(struct e1000_tx_desc
) -
3111 min_tx_space
= ALIGN(min_tx_space
, 1024);
3112 min_tx_space
>>= 10;
3113 /* software strips receive CRC, so leave room for it */
3114 min_rx_space
= adapter
->max_frame_size
;
3115 min_rx_space
= ALIGN(min_rx_space
, 1024);
3116 min_rx_space
>>= 10;
3119 * If current Tx allocation is less than the min Tx FIFO size,
3120 * and the min Tx FIFO size is less than the current Rx FIFO
3121 * allocation, take space away from current Rx allocation
3123 if ((tx_space
< min_tx_space
) &&
3124 ((min_tx_space
- tx_space
) < pba
)) {
3125 pba
-= min_tx_space
- tx_space
;
3128 * if short on Rx space, Rx wins and must trump tx
3129 * adjustment or use Early Receive if available
3131 if ((pba
< min_rx_space
) &&
3132 (!(adapter
->flags
& FLAG_HAS_ERT
)))
3133 /* ERT enabled in e1000_configure_rx */
3142 * flow control settings
3144 * The high water mark must be low enough to fit one full frame
3145 * (or the size used for early receive) above it in the Rx FIFO.
3146 * Set it to the lower of:
3147 * - 90% of the Rx FIFO size, and
3148 * - the full Rx FIFO size minus the early receive size (for parts
3149 * with ERT support assuming ERT set to E1000_ERT_2048), or
3150 * - the full Rx FIFO size minus one full frame
3152 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
3153 fc
->pause_time
= 0xFFFF;
3155 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
3157 fc
->current_mode
= fc
->requested_mode
;
3159 switch (hw
->mac
.type
) {
3161 if ((adapter
->flags
& FLAG_HAS_ERT
) &&
3162 (adapter
->netdev
->mtu
> ETH_DATA_LEN
))
3163 hwm
= min(((pba
<< 10) * 9 / 10),
3164 ((pba
<< 10) - (E1000_ERT_2048
<< 3)));
3166 hwm
= min(((pba
<< 10) * 9 / 10),
3167 ((pba
<< 10) - adapter
->max_frame_size
));
3169 fc
->high_water
= hwm
& E1000_FCRTH_RTH
; /* 8-byte granularity */
3170 fc
->low_water
= fc
->high_water
- 8;
3174 * Workaround PCH LOM adapter hangs with certain network
3175 * loads. If hangs persist, try disabling Tx flow control.
3177 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3178 fc
->high_water
= 0x3500;
3179 fc
->low_water
= 0x1500;
3181 fc
->high_water
= 0x5000;
3182 fc
->low_water
= 0x3000;
3184 fc
->refresh_time
= 0x1000;
3187 fc
->high_water
= 0x05C20;
3188 fc
->low_water
= 0x05048;
3189 fc
->pause_time
= 0x0650;
3190 fc
->refresh_time
= 0x0400;
3194 /* Allow time for pending master requests to run */
3195 mac
->ops
.reset_hw(hw
);
3198 * For parts with AMT enabled, let the firmware know
3199 * that the network interface is in control
3201 if (adapter
->flags
& FLAG_HAS_AMT
)
3202 e1000_get_hw_control(adapter
);
3206 if (mac
->ops
.init_hw(hw
))
3207 e_err("Hardware Error\n");
3209 e1000_update_mng_vlan(adapter
);
3211 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3212 ew32(VET
, ETH_P_8021Q
);
3214 e1000e_reset_adaptive(hw
);
3215 e1000_get_phy_info(hw
);
3217 if ((adapter
->flags
& FLAG_HAS_SMART_POWER_DOWN
) &&
3218 !(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
3221 * speed up time to link by disabling smart power down, ignore
3222 * the return value of this function because there is nothing
3223 * different we would do if it failed
3225 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
3226 phy_data
&= ~IGP02E1000_PM_SPD
;
3227 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
3231 int e1000e_up(struct e1000_adapter
*adapter
)
3233 struct e1000_hw
*hw
= &adapter
->hw
;
3235 /* hardware has been reset, we need to reload some things */
3236 e1000_configure(adapter
);
3238 clear_bit(__E1000_DOWN
, &adapter
->state
);
3240 napi_enable(&adapter
->napi
);
3241 if (adapter
->msix_entries
)
3242 e1000_configure_msix(adapter
);
3243 e1000_irq_enable(adapter
);
3245 netif_wake_queue(adapter
->netdev
);
3247 /* fire a link change interrupt to start the watchdog */
3248 if (adapter
->msix_entries
)
3249 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
3251 ew32(ICS
, E1000_ICS_LSC
);
3256 void e1000e_down(struct e1000_adapter
*adapter
)
3258 struct net_device
*netdev
= adapter
->netdev
;
3259 struct e1000_hw
*hw
= &adapter
->hw
;
3263 * signal that we're down so the interrupt handler does not
3264 * reschedule our watchdog timer
3266 set_bit(__E1000_DOWN
, &adapter
->state
);
3268 /* disable receives in the hardware */
3270 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3271 /* flush and sleep below */
3273 netif_stop_queue(netdev
);
3275 /* disable transmits in the hardware */
3277 tctl
&= ~E1000_TCTL_EN
;
3279 /* flush both disables and wait for them to finish */
3283 napi_disable(&adapter
->napi
);
3284 e1000_irq_disable(adapter
);
3286 del_timer_sync(&adapter
->watchdog_timer
);
3287 del_timer_sync(&adapter
->phy_info_timer
);
3289 netif_carrier_off(netdev
);
3290 adapter
->link_speed
= 0;
3291 adapter
->link_duplex
= 0;
3293 if (!pci_channel_offline(adapter
->pdev
))
3294 e1000e_reset(adapter
);
3295 e1000_clean_tx_ring(adapter
);
3296 e1000_clean_rx_ring(adapter
);
3299 * TODO: for power management, we could drop the link and
3300 * pci_disable_device here.
3304 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
3307 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
3309 e1000e_down(adapter
);
3311 clear_bit(__E1000_RESETTING
, &adapter
->state
);
3315 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
3316 * @adapter: board private structure to initialize
3318 * e1000_sw_init initializes the Adapter private data structure.
3319 * Fields are initialized based on PCI device information and
3320 * OS network device settings (MTU size).
3322 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
3324 struct net_device
*netdev
= adapter
->netdev
;
3326 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
3327 adapter
->rx_ps_bsize0
= 128;
3328 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3329 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
3331 e1000e_set_interrupt_capability(adapter
);
3333 if (e1000_alloc_queues(adapter
))
3336 /* Explicitly disable IRQ since the NIC can be in any state. */
3337 e1000_irq_disable(adapter
);
3339 set_bit(__E1000_DOWN
, &adapter
->state
);
3344 * e1000_intr_msi_test - Interrupt Handler
3345 * @irq: interrupt number
3346 * @data: pointer to a network interface device structure
3348 static irqreturn_t
e1000_intr_msi_test(int irq
, void *data
)
3350 struct net_device
*netdev
= data
;
3351 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3352 struct e1000_hw
*hw
= &adapter
->hw
;
3353 u32 icr
= er32(ICR
);
3355 e_dbg("icr is %08X\n", icr
);
3356 if (icr
& E1000_ICR_RXSEQ
) {
3357 adapter
->flags
&= ~FLAG_MSI_TEST_FAILED
;
3365 * e1000_test_msi_interrupt - Returns 0 for successful test
3366 * @adapter: board private struct
3368 * code flow taken from tg3.c
3370 static int e1000_test_msi_interrupt(struct e1000_adapter
*adapter
)
3372 struct net_device
*netdev
= adapter
->netdev
;
3373 struct e1000_hw
*hw
= &adapter
->hw
;
3376 /* poll_enable hasn't been called yet, so don't need disable */
3377 /* clear any pending events */
3380 /* free the real vector and request a test handler */
3381 e1000_free_irq(adapter
);
3382 e1000e_reset_interrupt_capability(adapter
);
3384 /* Assume that the test fails, if it succeeds then the test
3385 * MSI irq handler will unset this flag */
3386 adapter
->flags
|= FLAG_MSI_TEST_FAILED
;
3388 err
= pci_enable_msi(adapter
->pdev
);
3390 goto msi_test_failed
;
3392 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi_test
, 0,
3393 netdev
->name
, netdev
);
3395 pci_disable_msi(adapter
->pdev
);
3396 goto msi_test_failed
;
3401 e1000_irq_enable(adapter
);
3403 /* fire an unusual interrupt on the test handler */
3404 ew32(ICS
, E1000_ICS_RXSEQ
);
3408 e1000_irq_disable(adapter
);
3412 if (adapter
->flags
& FLAG_MSI_TEST_FAILED
) {
3413 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
3415 e_info("MSI interrupt test failed!\n");
3418 free_irq(adapter
->pdev
->irq
, netdev
);
3419 pci_disable_msi(adapter
->pdev
);
3422 goto msi_test_failed
;
3424 /* okay so the test worked, restore settings */
3425 e_dbg("MSI interrupt test succeeded!\n");
3427 e1000e_set_interrupt_capability(adapter
);
3428 e1000_request_irq(adapter
);
3433 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3434 * @adapter: board private struct
3436 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3438 static int e1000_test_msi(struct e1000_adapter
*adapter
)
3443 if (!(adapter
->flags
& FLAG_MSI_ENABLED
))
3446 /* disable SERR in case the MSI write causes a master abort */
3447 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3448 if (pci_cmd
& PCI_COMMAND_SERR
)
3449 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
,
3450 pci_cmd
& ~PCI_COMMAND_SERR
);
3452 err
= e1000_test_msi_interrupt(adapter
);
3454 /* re-enable SERR */
3455 if (pci_cmd
& PCI_COMMAND_SERR
) {
3456 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3457 pci_cmd
|= PCI_COMMAND_SERR
;
3458 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
, pci_cmd
);
3465 /* EIO means MSI test failed */
3469 /* back to INTx mode */
3470 e_warn("MSI interrupt test failed, using legacy interrupt.\n");
3472 e1000_free_irq(adapter
);
3474 err
= e1000_request_irq(adapter
);
3480 * e1000_open - Called when a network interface is made active
3481 * @netdev: network interface device structure
3483 * Returns 0 on success, negative value on failure
3485 * The open entry point is called when a network interface is made
3486 * active by the system (IFF_UP). At this point all resources needed
3487 * for transmit and receive operations are allocated, the interrupt
3488 * handler is registered with the OS, the watchdog timer is started,
3489 * and the stack is notified that the interface is ready.
3491 static int e1000_open(struct net_device
*netdev
)
3493 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3494 struct e1000_hw
*hw
= &adapter
->hw
;
3495 struct pci_dev
*pdev
= adapter
->pdev
;
3498 /* disallow open during test */
3499 if (test_bit(__E1000_TESTING
, &adapter
->state
))
3502 pm_runtime_get_sync(&pdev
->dev
);
3504 netif_carrier_off(netdev
);
3506 /* allocate transmit descriptors */
3507 err
= e1000e_setup_tx_resources(adapter
);
3511 /* allocate receive descriptors */
3512 err
= e1000e_setup_rx_resources(adapter
);
3517 * If AMT is enabled, let the firmware know that the network
3518 * interface is now open and reset the part to a known state.
3520 if (adapter
->flags
& FLAG_HAS_AMT
) {
3521 e1000_get_hw_control(adapter
);
3522 e1000e_reset(adapter
);
3525 e1000e_power_up_phy(adapter
);
3527 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
3528 if ((adapter
->hw
.mng_cookie
.status
&
3529 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
3530 e1000_update_mng_vlan(adapter
);
3532 /* DMA latency requirement to workaround early-receive/jumbo issue */
3533 if (adapter
->flags
& FLAG_HAS_ERT
)
3534 pm_qos_add_request(&adapter
->netdev
->pm_qos_req
,
3535 PM_QOS_CPU_DMA_LATENCY
,
3536 PM_QOS_DEFAULT_VALUE
);
3539 * before we allocate an interrupt, we must be ready to handle it.
3540 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3541 * as soon as we call pci_request_irq, so we have to setup our
3542 * clean_rx handler before we do so.
3544 e1000_configure(adapter
);
3546 err
= e1000_request_irq(adapter
);
3551 * Work around PCIe errata with MSI interrupts causing some chipsets to
3552 * ignore e1000e MSI messages, which means we need to test our MSI
3555 if (adapter
->int_mode
!= E1000E_INT_MODE_LEGACY
) {
3556 err
= e1000_test_msi(adapter
);
3558 e_err("Interrupt allocation failed\n");
3563 /* From here on the code is the same as e1000e_up() */
3564 clear_bit(__E1000_DOWN
, &adapter
->state
);
3566 napi_enable(&adapter
->napi
);
3568 e1000_irq_enable(adapter
);
3570 netif_start_queue(netdev
);
3572 adapter
->idle_check
= true;
3573 pm_runtime_put(&pdev
->dev
);
3575 /* fire a link status change interrupt to start the watchdog */
3576 if (adapter
->msix_entries
)
3577 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
3579 ew32(ICS
, E1000_ICS_LSC
);
3584 e1000_release_hw_control(adapter
);
3585 e1000_power_down_phy(adapter
);
3586 e1000e_free_rx_resources(adapter
);
3588 e1000e_free_tx_resources(adapter
);
3590 e1000e_reset(adapter
);
3591 pm_runtime_put_sync(&pdev
->dev
);
3597 * e1000_close - Disables a network interface
3598 * @netdev: network interface device structure
3600 * Returns 0, this is not allowed to fail
3602 * The close entry point is called when an interface is de-activated
3603 * by the OS. The hardware is still under the drivers control, but
3604 * needs to be disabled. A global MAC reset is issued to stop the
3605 * hardware, and all transmit and receive resources are freed.
3607 static int e1000_close(struct net_device
*netdev
)
3609 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3610 struct pci_dev
*pdev
= adapter
->pdev
;
3612 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
3614 pm_runtime_get_sync(&pdev
->dev
);
3616 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
3617 e1000e_down(adapter
);
3618 e1000_free_irq(adapter
);
3620 e1000_power_down_phy(adapter
);
3622 e1000e_free_tx_resources(adapter
);
3623 e1000e_free_rx_resources(adapter
);
3626 * kill manageability vlan ID if supported, but not if a vlan with
3627 * the same ID is registered on the host OS (let 8021q kill it)
3629 if ((adapter
->hw
.mng_cookie
.status
&
3630 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
3632 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
)))
3633 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
3636 * If AMT is enabled, let the firmware know that the network
3637 * interface is now closed
3639 if (adapter
->flags
& FLAG_HAS_AMT
)
3640 e1000_release_hw_control(adapter
);
3642 if (adapter
->flags
& FLAG_HAS_ERT
)
3643 pm_qos_remove_request(&adapter
->netdev
->pm_qos_req
);
3645 pm_runtime_put_sync(&pdev
->dev
);
3650 * e1000_set_mac - Change the Ethernet Address of the NIC
3651 * @netdev: network interface device structure
3652 * @p: pointer to an address structure
3654 * Returns 0 on success, negative on failure
3656 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
3658 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3659 struct sockaddr
*addr
= p
;
3661 if (!is_valid_ether_addr(addr
->sa_data
))
3662 return -EADDRNOTAVAIL
;
3664 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
3665 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
3667 e1000e_rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
3669 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
3670 /* activate the work around */
3671 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
3674 * Hold a copy of the LAA in RAR[14] This is done so that
3675 * between the time RAR[0] gets clobbered and the time it
3676 * gets fixed (in e1000_watchdog), the actual LAA is in one
3677 * of the RARs and no incoming packets directed to this port
3678 * are dropped. Eventually the LAA will be in RAR[0] and
3681 e1000e_rar_set(&adapter
->hw
,
3682 adapter
->hw
.mac
.addr
,
3683 adapter
->hw
.mac
.rar_entry_count
- 1);
3690 * e1000e_update_phy_task - work thread to update phy
3691 * @work: pointer to our work struct
3693 * this worker thread exists because we must acquire a
3694 * semaphore to read the phy, which we could msleep while
3695 * waiting for it, and we can't msleep in a timer.
3697 static void e1000e_update_phy_task(struct work_struct
*work
)
3699 struct e1000_adapter
*adapter
= container_of(work
,
3700 struct e1000_adapter
, update_phy_task
);
3701 e1000_get_phy_info(&adapter
->hw
);
3705 * Need to wait a few seconds after link up to get diagnostic information from
3708 static void e1000_update_phy_info(unsigned long data
)
3710 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3711 schedule_work(&adapter
->update_phy_task
);
3715 * e1000e_update_phy_stats - Update the PHY statistics counters
3716 * @adapter: board private structure
3718 static void e1000e_update_phy_stats(struct e1000_adapter
*adapter
)
3720 struct e1000_hw
*hw
= &adapter
->hw
;
3724 ret_val
= hw
->phy
.ops
.acquire(hw
);
3730 #define HV_PHY_STATS_PAGE 778
3732 * A page set is expensive so check if already on desired page.
3733 * If not, set to the page with the PHY status registers.
3735 ret_val
= e1000e_read_phy_reg_mdic(hw
, IGP01E1000_PHY_PAGE_SELECT
,
3739 if (phy_data
!= (HV_PHY_STATS_PAGE
<< IGP_PAGE_SHIFT
)) {
3740 ret_val
= e1000e_write_phy_reg_mdic(hw
,
3741 IGP01E1000_PHY_PAGE_SELECT
,
3742 (HV_PHY_STATS_PAGE
<<
3748 /* Read/clear the upper 16-bit registers and read/accumulate lower */
3750 /* Single Collision Count */
3751 e1000e_read_phy_reg_mdic(hw
, HV_SCC_UPPER
& MAX_PHY_REG_ADDRESS
,
3753 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3754 HV_SCC_LOWER
& MAX_PHY_REG_ADDRESS
,
3757 adapter
->stats
.scc
+= phy_data
;
3759 /* Excessive Collision Count */
3760 e1000e_read_phy_reg_mdic(hw
, HV_ECOL_UPPER
& MAX_PHY_REG_ADDRESS
,
3762 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3763 HV_ECOL_LOWER
& MAX_PHY_REG_ADDRESS
,
3766 adapter
->stats
.ecol
+= phy_data
;
3768 /* Multiple Collision Count */
3769 e1000e_read_phy_reg_mdic(hw
, HV_MCC_UPPER
& MAX_PHY_REG_ADDRESS
,
3771 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3772 HV_MCC_LOWER
& MAX_PHY_REG_ADDRESS
,
3775 adapter
->stats
.mcc
+= phy_data
;
3777 /* Late Collision Count */
3778 e1000e_read_phy_reg_mdic(hw
, HV_LATECOL_UPPER
& MAX_PHY_REG_ADDRESS
,
3780 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3782 MAX_PHY_REG_ADDRESS
,
3785 adapter
->stats
.latecol
+= phy_data
;
3787 /* Collision Count - also used for adaptive IFS */
3788 e1000e_read_phy_reg_mdic(hw
, HV_COLC_UPPER
& MAX_PHY_REG_ADDRESS
,
3790 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3791 HV_COLC_LOWER
& MAX_PHY_REG_ADDRESS
,
3794 hw
->mac
.collision_delta
= phy_data
;
3797 e1000e_read_phy_reg_mdic(hw
, HV_DC_UPPER
& MAX_PHY_REG_ADDRESS
,
3799 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3800 HV_DC_LOWER
& MAX_PHY_REG_ADDRESS
,
3803 adapter
->stats
.dc
+= phy_data
;
3805 /* Transmit with no CRS */
3806 e1000e_read_phy_reg_mdic(hw
, HV_TNCRS_UPPER
& MAX_PHY_REG_ADDRESS
,
3808 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3809 HV_TNCRS_LOWER
& MAX_PHY_REG_ADDRESS
,
3812 adapter
->stats
.tncrs
+= phy_data
;
3815 hw
->phy
.ops
.release(hw
);
3819 * e1000e_update_stats - Update the board statistics counters
3820 * @adapter: board private structure
3822 void e1000e_update_stats(struct e1000_adapter
*adapter
)
3824 struct net_device
*netdev
= adapter
->netdev
;
3825 struct e1000_hw
*hw
= &adapter
->hw
;
3826 struct pci_dev
*pdev
= adapter
->pdev
;
3829 * Prevent stats update while adapter is being reset, or if the pci
3830 * connection is down.
3832 if (adapter
->link_speed
== 0)
3834 if (pci_channel_offline(pdev
))
3837 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
3838 adapter
->stats
.gprc
+= er32(GPRC
);
3839 adapter
->stats
.gorc
+= er32(GORCL
);
3840 er32(GORCH
); /* Clear gorc */
3841 adapter
->stats
.bprc
+= er32(BPRC
);
3842 adapter
->stats
.mprc
+= er32(MPRC
);
3843 adapter
->stats
.roc
+= er32(ROC
);
3845 adapter
->stats
.mpc
+= er32(MPC
);
3847 /* Half-duplex statistics */
3848 if (adapter
->link_duplex
== HALF_DUPLEX
) {
3849 if (adapter
->flags2
& FLAG2_HAS_PHY_STATS
) {
3850 e1000e_update_phy_stats(adapter
);
3852 adapter
->stats
.scc
+= er32(SCC
);
3853 adapter
->stats
.ecol
+= er32(ECOL
);
3854 adapter
->stats
.mcc
+= er32(MCC
);
3855 adapter
->stats
.latecol
+= er32(LATECOL
);
3856 adapter
->stats
.dc
+= er32(DC
);
3858 hw
->mac
.collision_delta
= er32(COLC
);
3860 if ((hw
->mac
.type
!= e1000_82574
) &&
3861 (hw
->mac
.type
!= e1000_82583
))
3862 adapter
->stats
.tncrs
+= er32(TNCRS
);
3864 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
3867 adapter
->stats
.xonrxc
+= er32(XONRXC
);
3868 adapter
->stats
.xontxc
+= er32(XONTXC
);
3869 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
3870 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
3871 adapter
->stats
.gptc
+= er32(GPTC
);
3872 adapter
->stats
.gotc
+= er32(GOTCL
);
3873 er32(GOTCH
); /* Clear gotc */
3874 adapter
->stats
.rnbc
+= er32(RNBC
);
3875 adapter
->stats
.ruc
+= er32(RUC
);
3877 adapter
->stats
.mptc
+= er32(MPTC
);
3878 adapter
->stats
.bptc
+= er32(BPTC
);
3880 /* used for adaptive IFS */
3882 hw
->mac
.tx_packet_delta
= er32(TPT
);
3883 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
3885 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
3886 adapter
->stats
.rxerrc
+= er32(RXERRC
);
3887 adapter
->stats
.cexterr
+= er32(CEXTERR
);
3888 adapter
->stats
.tsctc
+= er32(TSCTC
);
3889 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
3891 /* Fill out the OS statistics structure */
3892 netdev
->stats
.multicast
= adapter
->stats
.mprc
;
3893 netdev
->stats
.collisions
= adapter
->stats
.colc
;
3898 * RLEC on some newer hardware can be incorrect so build
3899 * our own version based on RUC and ROC
3901 netdev
->stats
.rx_errors
= adapter
->stats
.rxerrc
+
3902 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3903 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3904 adapter
->stats
.cexterr
;
3905 netdev
->stats
.rx_length_errors
= adapter
->stats
.ruc
+
3907 netdev
->stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3908 netdev
->stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3909 netdev
->stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3912 netdev
->stats
.tx_errors
= adapter
->stats
.ecol
+
3913 adapter
->stats
.latecol
;
3914 netdev
->stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3915 netdev
->stats
.tx_window_errors
= adapter
->stats
.latecol
;
3916 netdev
->stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3918 /* Tx Dropped needs to be maintained elsewhere */
3920 /* Management Stats */
3921 adapter
->stats
.mgptc
+= er32(MGTPTC
);
3922 adapter
->stats
.mgprc
+= er32(MGTPRC
);
3923 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
3927 * e1000_phy_read_status - Update the PHY register status snapshot
3928 * @adapter: board private structure
3930 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
3932 struct e1000_hw
*hw
= &adapter
->hw
;
3933 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
3936 if ((er32(STATUS
) & E1000_STATUS_LU
) &&
3937 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
3938 ret_val
= e1e_rphy(hw
, PHY_CONTROL
, &phy
->bmcr
);
3939 ret_val
|= e1e_rphy(hw
, PHY_STATUS
, &phy
->bmsr
);
3940 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_ADV
, &phy
->advertise
);
3941 ret_val
|= e1e_rphy(hw
, PHY_LP_ABILITY
, &phy
->lpa
);
3942 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_EXP
, &phy
->expansion
);
3943 ret_val
|= e1e_rphy(hw
, PHY_1000T_CTRL
, &phy
->ctrl1000
);
3944 ret_val
|= e1e_rphy(hw
, PHY_1000T_STATUS
, &phy
->stat1000
);
3945 ret_val
|= e1e_rphy(hw
, PHY_EXT_STATUS
, &phy
->estatus
);
3947 e_warn("Error reading PHY register\n");
3950 * Do not read PHY registers if link is not up
3951 * Set values to typical power-on defaults
3953 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
3954 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
3955 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
3957 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
3958 ADVERTISE_ALL
| ADVERTISE_CSMA
);
3960 phy
->expansion
= EXPANSION_ENABLENPAGE
;
3961 phy
->ctrl1000
= ADVERTISE_1000FULL
;
3963 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
3967 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
3969 struct e1000_hw
*hw
= &adapter
->hw
;
3970 u32 ctrl
= er32(CTRL
);
3972 /* Link status message must follow this format for user tools */
3973 printk(KERN_INFO
"e1000e: %s NIC Link is Up %d Mbps %s, "
3974 "Flow Control: %s\n",
3975 adapter
->netdev
->name
,
3976 adapter
->link_speed
,
3977 (adapter
->link_duplex
== FULL_DUPLEX
) ?
3978 "Full Duplex" : "Half Duplex",
3979 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
)) ?
3981 ((ctrl
& E1000_CTRL_RFCE
) ? "RX" :
3982 ((ctrl
& E1000_CTRL_TFCE
) ? "TX" : "None" )));
3985 static bool e1000e_has_link(struct e1000_adapter
*adapter
)
3987 struct e1000_hw
*hw
= &adapter
->hw
;
3988 bool link_active
= 0;
3992 * get_link_status is set on LSC (link status) interrupt or
3993 * Rx sequence error interrupt. get_link_status will stay
3994 * false until the check_for_link establishes link
3995 * for copper adapters ONLY
3997 switch (hw
->phy
.media_type
) {
3998 case e1000_media_type_copper
:
3999 if (hw
->mac
.get_link_status
) {
4000 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4001 link_active
= !hw
->mac
.get_link_status
;
4006 case e1000_media_type_fiber
:
4007 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4008 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
4010 case e1000_media_type_internal_serdes
:
4011 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4012 link_active
= adapter
->hw
.mac
.serdes_has_link
;
4015 case e1000_media_type_unknown
:
4019 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
4020 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
4021 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
4022 e_info("Gigabit has been disabled, downgrading speed\n");
4028 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
4030 /* make sure the receive unit is started */
4031 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
4032 (adapter
->flags
& FLAG_RX_RESTART_NOW
)) {
4033 struct e1000_hw
*hw
= &adapter
->hw
;
4034 u32 rctl
= er32(RCTL
);
4035 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
4036 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
4041 * e1000_watchdog - Timer Call-back
4042 * @data: pointer to adapter cast into an unsigned long
4044 static void e1000_watchdog(unsigned long data
)
4046 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
4048 /* Do the rest outside of interrupt context */
4049 schedule_work(&adapter
->watchdog_task
);
4051 /* TODO: make this use queue_delayed_work() */
4054 static void e1000_watchdog_task(struct work_struct
*work
)
4056 struct e1000_adapter
*adapter
= container_of(work
,
4057 struct e1000_adapter
, watchdog_task
);
4058 struct net_device
*netdev
= adapter
->netdev
;
4059 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
4060 struct e1000_phy_info
*phy
= &adapter
->hw
.phy
;
4061 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4062 struct e1000_hw
*hw
= &adapter
->hw
;
4066 link
= e1000e_has_link(adapter
);
4067 if ((netif_carrier_ok(netdev
)) && link
) {
4068 /* Cancel scheduled suspend requests. */
4069 pm_runtime_resume(netdev
->dev
.parent
);
4071 e1000e_enable_receives(adapter
);
4075 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
4076 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
4077 e1000_update_mng_vlan(adapter
);
4080 if (!netif_carrier_ok(netdev
)) {
4083 /* Cancel scheduled suspend requests. */
4084 pm_runtime_resume(netdev
->dev
.parent
);
4086 /* update snapshot of PHY registers on LSC */
4087 e1000_phy_read_status(adapter
);
4088 mac
->ops
.get_link_up_info(&adapter
->hw
,
4089 &adapter
->link_speed
,
4090 &adapter
->link_duplex
);
4091 e1000_print_link_info(adapter
);
4093 * On supported PHYs, check for duplex mismatch only
4094 * if link has autonegotiated at 10/100 half
4096 if ((hw
->phy
.type
== e1000_phy_igp_3
||
4097 hw
->phy
.type
== e1000_phy_bm
) &&
4098 (hw
->mac
.autoneg
== true) &&
4099 (adapter
->link_speed
== SPEED_10
||
4100 adapter
->link_speed
== SPEED_100
) &&
4101 (adapter
->link_duplex
== HALF_DUPLEX
)) {
4104 e1e_rphy(hw
, PHY_AUTONEG_EXP
, &autoneg_exp
);
4106 if (!(autoneg_exp
& NWAY_ER_LP_NWAY_CAPS
))
4107 e_info("Autonegotiated half duplex but"
4108 " link partner cannot autoneg. "
4109 " Try forcing full duplex if "
4110 "link gets many collisions.\n");
4113 /* adjust timeout factor according to speed/duplex */
4114 adapter
->tx_timeout_factor
= 1;
4115 switch (adapter
->link_speed
) {
4118 adapter
->tx_timeout_factor
= 16;
4122 adapter
->tx_timeout_factor
= 10;
4127 * workaround: re-program speed mode bit after
4130 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
4133 tarc0
= er32(TARC(0));
4134 tarc0
&= ~SPEED_MODE_BIT
;
4135 ew32(TARC(0), tarc0
);
4139 * disable TSO for pcie and 10/100 speeds, to avoid
4140 * some hardware issues
4142 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
4143 switch (adapter
->link_speed
) {
4146 e_info("10/100 speed: disabling TSO\n");
4147 netdev
->features
&= ~NETIF_F_TSO
;
4148 netdev
->features
&= ~NETIF_F_TSO6
;
4151 netdev
->features
|= NETIF_F_TSO
;
4152 netdev
->features
|= NETIF_F_TSO6
;
4161 * enable transmits in the hardware, need to do this
4162 * after setting TARC(0)
4165 tctl
|= E1000_TCTL_EN
;
4169 * Perform any post-link-up configuration before
4170 * reporting link up.
4172 if (phy
->ops
.cfg_on_link_up
)
4173 phy
->ops
.cfg_on_link_up(hw
);
4175 netif_carrier_on(netdev
);
4177 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4178 mod_timer(&adapter
->phy_info_timer
,
4179 round_jiffies(jiffies
+ 2 * HZ
));
4182 if (netif_carrier_ok(netdev
)) {
4183 adapter
->link_speed
= 0;
4184 adapter
->link_duplex
= 0;
4185 /* Link status message must follow this format */
4186 printk(KERN_INFO
"e1000e: %s NIC Link is Down\n",
4187 adapter
->netdev
->name
);
4188 netif_carrier_off(netdev
);
4189 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4190 mod_timer(&adapter
->phy_info_timer
,
4191 round_jiffies(jiffies
+ 2 * HZ
));
4193 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
4194 schedule_work(&adapter
->reset_task
);
4196 pm_schedule_suspend(netdev
->dev
.parent
,
4202 e1000e_update_stats(adapter
);
4204 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
4205 adapter
->tpt_old
= adapter
->stats
.tpt
;
4206 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
4207 adapter
->colc_old
= adapter
->stats
.colc
;
4209 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
4210 adapter
->gorc_old
= adapter
->stats
.gorc
;
4211 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
4212 adapter
->gotc_old
= adapter
->stats
.gotc
;
4214 e1000e_update_adaptive(&adapter
->hw
);
4216 if (!netif_carrier_ok(netdev
)) {
4217 tx_pending
= (e1000_desc_unused(tx_ring
) + 1 <
4221 * We've lost link, so the controller stops DMA,
4222 * but we've got queued Tx work that's never going
4223 * to get done, so reset controller to flush Tx.
4224 * (Do the reset outside of interrupt context).
4226 adapter
->tx_timeout_count
++;
4227 schedule_work(&adapter
->reset_task
);
4228 /* return immediately since reset is imminent */
4233 /* Simple mode for Interrupt Throttle Rate (ITR) */
4234 if (adapter
->itr_setting
== 4) {
4236 * Symmetric Tx/Rx gets a reduced ITR=2000;
4237 * Total asymmetrical Tx or Rx gets ITR=8000;
4238 * everyone else is between 2000-8000.
4240 u32 goc
= (adapter
->gotc
+ adapter
->gorc
) / 10000;
4241 u32 dif
= (adapter
->gotc
> adapter
->gorc
?
4242 adapter
->gotc
- adapter
->gorc
:
4243 adapter
->gorc
- adapter
->gotc
) / 10000;
4244 u32 itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
4246 ew32(ITR
, 1000000000 / (itr
* 256));
4249 /* Cause software interrupt to ensure Rx ring is cleaned */
4250 if (adapter
->msix_entries
)
4251 ew32(ICS
, adapter
->rx_ring
->ims_val
);
4253 ew32(ICS
, E1000_ICS_RXDMT0
);
4255 /* Force detection of hung controller every watchdog period */
4256 adapter
->detect_tx_hung
= 1;
4259 * With 82571 controllers, LAA may be overwritten due to controller
4260 * reset from the other port. Set the appropriate LAA in RAR[0]
4262 if (e1000e_get_laa_state_82571(hw
))
4263 e1000e_rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
4265 /* Reset the timer */
4266 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4267 mod_timer(&adapter
->watchdog_timer
,
4268 round_jiffies(jiffies
+ 2 * HZ
));
4271 #define E1000_TX_FLAGS_CSUM 0x00000001
4272 #define E1000_TX_FLAGS_VLAN 0x00000002
4273 #define E1000_TX_FLAGS_TSO 0x00000004
4274 #define E1000_TX_FLAGS_IPV4 0x00000008
4275 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
4276 #define E1000_TX_FLAGS_VLAN_SHIFT 16
4278 static int e1000_tso(struct e1000_adapter
*adapter
,
4279 struct sk_buff
*skb
)
4281 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4282 struct e1000_context_desc
*context_desc
;
4283 struct e1000_buffer
*buffer_info
;
4286 u16 ipcse
= 0, tucse
, mss
;
4287 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
4290 if (!skb_is_gso(skb
))
4293 if (skb_header_cloned(skb
)) {
4294 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
4299 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
4300 mss
= skb_shinfo(skb
)->gso_size
;
4301 if (skb
->protocol
== htons(ETH_P_IP
)) {
4302 struct iphdr
*iph
= ip_hdr(skb
);
4305 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
, iph
->daddr
,
4307 cmd_length
= E1000_TXD_CMD_IP
;
4308 ipcse
= skb_transport_offset(skb
) - 1;
4309 } else if (skb_is_gso_v6(skb
)) {
4310 ipv6_hdr(skb
)->payload_len
= 0;
4311 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
4312 &ipv6_hdr(skb
)->daddr
,
4316 ipcss
= skb_network_offset(skb
);
4317 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
4318 tucss
= skb_transport_offset(skb
);
4319 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
4322 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
4323 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
4325 i
= tx_ring
->next_to_use
;
4326 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
4327 buffer_info
= &tx_ring
->buffer_info
[i
];
4329 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
4330 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
4331 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
4332 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
4333 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
4334 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
4335 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
4336 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
4337 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
4339 buffer_info
->time_stamp
= jiffies
;
4340 buffer_info
->next_to_watch
= i
;
4343 if (i
== tx_ring
->count
)
4345 tx_ring
->next_to_use
= i
;
4350 static bool e1000_tx_csum(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
4352 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4353 struct e1000_context_desc
*context_desc
;
4354 struct e1000_buffer
*buffer_info
;
4357 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
4360 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
4363 if (skb
->protocol
== cpu_to_be16(ETH_P_8021Q
))
4364 protocol
= vlan_eth_hdr(skb
)->h_vlan_encapsulated_proto
;
4366 protocol
= skb
->protocol
;
4369 case cpu_to_be16(ETH_P_IP
):
4370 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
4371 cmd_len
|= E1000_TXD_CMD_TCP
;
4373 case cpu_to_be16(ETH_P_IPV6
):
4374 /* XXX not handling all IPV6 headers */
4375 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
4376 cmd_len
|= E1000_TXD_CMD_TCP
;
4379 if (unlikely(net_ratelimit()))
4380 e_warn("checksum_partial proto=%x!\n",
4381 be16_to_cpu(protocol
));
4385 css
= skb_transport_offset(skb
);
4387 i
= tx_ring
->next_to_use
;
4388 buffer_info
= &tx_ring
->buffer_info
[i
];
4389 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
4391 context_desc
->lower_setup
.ip_config
= 0;
4392 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
4393 context_desc
->upper_setup
.tcp_fields
.tucso
=
4394 css
+ skb
->csum_offset
;
4395 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
4396 context_desc
->tcp_seg_setup
.data
= 0;
4397 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
4399 buffer_info
->time_stamp
= jiffies
;
4400 buffer_info
->next_to_watch
= i
;
4403 if (i
== tx_ring
->count
)
4405 tx_ring
->next_to_use
= i
;
4410 #define E1000_MAX_PER_TXD 8192
4411 #define E1000_MAX_TXD_PWR 12
4413 static int e1000_tx_map(struct e1000_adapter
*adapter
,
4414 struct sk_buff
*skb
, unsigned int first
,
4415 unsigned int max_per_txd
, unsigned int nr_frags
,
4418 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4419 struct pci_dev
*pdev
= adapter
->pdev
;
4420 struct e1000_buffer
*buffer_info
;
4421 unsigned int len
= skb_headlen(skb
);
4422 unsigned int offset
= 0, size
, count
= 0, i
;
4423 unsigned int f
, bytecount
, segs
;
4425 i
= tx_ring
->next_to_use
;
4428 buffer_info
= &tx_ring
->buffer_info
[i
];
4429 size
= min(len
, max_per_txd
);
4431 buffer_info
->length
= size
;
4432 buffer_info
->time_stamp
= jiffies
;
4433 buffer_info
->next_to_watch
= i
;
4434 buffer_info
->dma
= dma_map_single(&pdev
->dev
,
4436 size
, DMA_TO_DEVICE
);
4437 buffer_info
->mapped_as_page
= false;
4438 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
4447 if (i
== tx_ring
->count
)
4452 for (f
= 0; f
< nr_frags
; f
++) {
4453 struct skb_frag_struct
*frag
;
4455 frag
= &skb_shinfo(skb
)->frags
[f
];
4457 offset
= frag
->page_offset
;
4461 if (i
== tx_ring
->count
)
4464 buffer_info
= &tx_ring
->buffer_info
[i
];
4465 size
= min(len
, max_per_txd
);
4467 buffer_info
->length
= size
;
4468 buffer_info
->time_stamp
= jiffies
;
4469 buffer_info
->next_to_watch
= i
;
4470 buffer_info
->dma
= dma_map_page(&pdev
->dev
, frag
->page
,
4473 buffer_info
->mapped_as_page
= true;
4474 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
4483 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
4484 /* multiply data chunks by size of headers */
4485 bytecount
= ((segs
- 1) * skb_headlen(skb
)) + skb
->len
;
4487 tx_ring
->buffer_info
[i
].skb
= skb
;
4488 tx_ring
->buffer_info
[i
].segs
= segs
;
4489 tx_ring
->buffer_info
[i
].bytecount
= bytecount
;
4490 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
4495 dev_err(&pdev
->dev
, "TX DMA map failed\n");
4496 buffer_info
->dma
= 0;
4502 i
+= tx_ring
->count
;
4504 buffer_info
= &tx_ring
->buffer_info
[i
];
4505 e1000_put_txbuf(adapter
, buffer_info
);;
4511 static void e1000_tx_queue(struct e1000_adapter
*adapter
,
4512 int tx_flags
, int count
)
4514 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4515 struct e1000_tx_desc
*tx_desc
= NULL
;
4516 struct e1000_buffer
*buffer_info
;
4517 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
4520 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
4521 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
4523 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
4525 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
4526 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
4529 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
4530 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
4531 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
4534 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
4535 txd_lower
|= E1000_TXD_CMD_VLE
;
4536 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
4539 i
= tx_ring
->next_to_use
;
4542 buffer_info
= &tx_ring
->buffer_info
[i
];
4543 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
4544 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4545 tx_desc
->lower
.data
=
4546 cpu_to_le32(txd_lower
| buffer_info
->length
);
4547 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
4550 if (i
== tx_ring
->count
)
4554 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
4557 * Force memory writes to complete before letting h/w
4558 * know there are new descriptors to fetch. (Only
4559 * applicable for weak-ordered memory model archs,
4564 tx_ring
->next_to_use
= i
;
4565 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
4567 * we need this if more than one processor can write to our tail
4568 * at a time, it synchronizes IO on IA64/Altix systems
4573 #define MINIMUM_DHCP_PACKET_SIZE 282
4574 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
4575 struct sk_buff
*skb
)
4577 struct e1000_hw
*hw
= &adapter
->hw
;
4580 if (vlan_tx_tag_present(skb
)) {
4581 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
4582 (adapter
->hw
.mng_cookie
.status
&
4583 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
4587 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
4590 if (((struct ethhdr
*) skb
->data
)->h_proto
!= htons(ETH_P_IP
))
4594 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+14);
4597 if (ip
->protocol
!= IPPROTO_UDP
)
4600 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
4601 if (ntohs(udp
->dest
) != 67)
4604 offset
= (u8
*)udp
+ 8 - skb
->data
;
4605 length
= skb
->len
- offset
;
4606 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
4612 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4614 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4616 netif_stop_queue(netdev
);
4618 * Herbert's original patch had:
4619 * smp_mb__after_netif_stop_queue();
4620 * but since that doesn't exist yet, just open code it.
4625 * We need to check again in a case another CPU has just
4626 * made room available.
4628 if (e1000_desc_unused(adapter
->tx_ring
) < size
)
4632 netif_start_queue(netdev
);
4633 ++adapter
->restart_queue
;
4637 static int e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4639 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4641 if (e1000_desc_unused(adapter
->tx_ring
) >= size
)
4643 return __e1000_maybe_stop_tx(netdev
, size
);
4646 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
4647 static netdev_tx_t
e1000_xmit_frame(struct sk_buff
*skb
,
4648 struct net_device
*netdev
)
4650 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4651 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4653 unsigned int max_per_txd
= E1000_MAX_PER_TXD
;
4654 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
4655 unsigned int tx_flags
= 0;
4656 unsigned int len
= skb_headlen(skb
);
4657 unsigned int nr_frags
;
4663 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
4664 dev_kfree_skb_any(skb
);
4665 return NETDEV_TX_OK
;
4668 if (skb
->len
<= 0) {
4669 dev_kfree_skb_any(skb
);
4670 return NETDEV_TX_OK
;
4673 mss
= skb_shinfo(skb
)->gso_size
;
4675 * The controller does a simple calculation to
4676 * make sure there is enough room in the FIFO before
4677 * initiating the DMA for each buffer. The calc is:
4678 * 4 = ceil(buffer len/mss). To make sure we don't
4679 * overrun the FIFO, adjust the max buffer len if mss
4684 max_per_txd
= min(mss
<< 2, max_per_txd
);
4685 max_txd_pwr
= fls(max_per_txd
) - 1;
4688 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
4689 * points to just header, pull a few bytes of payload from
4690 * frags into skb->data
4692 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
4694 * we do this workaround for ES2LAN, but it is un-necessary,
4695 * avoiding it could save a lot of cycles
4697 if (skb
->data_len
&& (hdr_len
== len
)) {
4698 unsigned int pull_size
;
4700 pull_size
= min((unsigned int)4, skb
->data_len
);
4701 if (!__pskb_pull_tail(skb
, pull_size
)) {
4702 e_err("__pskb_pull_tail failed.\n");
4703 dev_kfree_skb_any(skb
);
4704 return NETDEV_TX_OK
;
4706 len
= skb_headlen(skb
);
4710 /* reserve a descriptor for the offload context */
4711 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
4715 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
4717 nr_frags
= skb_shinfo(skb
)->nr_frags
;
4718 for (f
= 0; f
< nr_frags
; f
++)
4719 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
4722 if (adapter
->hw
.mac
.tx_pkt_filtering
)
4723 e1000_transfer_dhcp_info(adapter
, skb
);
4726 * need: count + 2 desc gap to keep tail from touching
4727 * head, otherwise try next time
4729 if (e1000_maybe_stop_tx(netdev
, count
+ 2))
4730 return NETDEV_TX_BUSY
;
4732 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
4733 tx_flags
|= E1000_TX_FLAGS_VLAN
;
4734 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
4737 first
= tx_ring
->next_to_use
;
4739 tso
= e1000_tso(adapter
, skb
);
4741 dev_kfree_skb_any(skb
);
4742 return NETDEV_TX_OK
;
4746 tx_flags
|= E1000_TX_FLAGS_TSO
;
4747 else if (e1000_tx_csum(adapter
, skb
))
4748 tx_flags
|= E1000_TX_FLAGS_CSUM
;
4751 * Old method was to assume IPv4 packet by default if TSO was enabled.
4752 * 82571 hardware supports TSO capabilities for IPv6 as well...
4753 * no longer assume, we must.
4755 if (skb
->protocol
== htons(ETH_P_IP
))
4756 tx_flags
|= E1000_TX_FLAGS_IPV4
;
4758 /* if count is 0 then mapping error has occured */
4759 count
= e1000_tx_map(adapter
, skb
, first
, max_per_txd
, nr_frags
, mss
);
4761 e1000_tx_queue(adapter
, tx_flags
, count
);
4762 /* Make sure there is space in the ring for the next send. */
4763 e1000_maybe_stop_tx(netdev
, MAX_SKB_FRAGS
+ 2);
4766 dev_kfree_skb_any(skb
);
4767 tx_ring
->buffer_info
[first
].time_stamp
= 0;
4768 tx_ring
->next_to_use
= first
;
4771 return NETDEV_TX_OK
;
4775 * e1000_tx_timeout - Respond to a Tx Hang
4776 * @netdev: network interface device structure
4778 static void e1000_tx_timeout(struct net_device
*netdev
)
4780 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4782 /* Do the reset outside of interrupt context */
4783 adapter
->tx_timeout_count
++;
4784 schedule_work(&adapter
->reset_task
);
4787 static void e1000_reset_task(struct work_struct
*work
)
4789 struct e1000_adapter
*adapter
;
4790 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
4792 e1000e_dump(adapter
);
4793 e_err("Reset adapter\n");
4794 e1000e_reinit_locked(adapter
);
4798 * e1000_get_stats - Get System Network Statistics
4799 * @netdev: network interface device structure
4801 * Returns the address of the device statistics structure.
4802 * The statistics are actually updated from the timer callback.
4804 static struct net_device_stats
*e1000_get_stats(struct net_device
*netdev
)
4806 /* only return the current stats */
4807 return &netdev
->stats
;
4811 * e1000_change_mtu - Change the Maximum Transfer Unit
4812 * @netdev: network interface device structure
4813 * @new_mtu: new value for maximum frame size
4815 * Returns 0 on success, negative on failure
4817 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
4819 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4820 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4822 /* Jumbo frame support */
4823 if ((max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) &&
4824 !(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
4825 e_err("Jumbo Frames not supported.\n");
4829 /* Supported frame sizes */
4830 if ((new_mtu
< ETH_ZLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
) ||
4831 (max_frame
> adapter
->max_hw_frame_size
)) {
4832 e_err("Unsupported MTU setting\n");
4836 /* Jumbo frame workaround on 82579 requires CRC be stripped */
4837 if ((adapter
->hw
.mac
.type
== e1000_pch2lan
) &&
4838 !(adapter
->flags2
& FLAG2_CRC_STRIPPING
) &&
4839 (new_mtu
> ETH_DATA_LEN
)) {
4840 e_err("Jumbo Frames not supported on 82579 when CRC "
4841 "stripping is disabled.\n");
4845 /* 82573 Errata 17 */
4846 if (((adapter
->hw
.mac
.type
== e1000_82573
) ||
4847 (adapter
->hw
.mac
.type
== e1000_82574
)) &&
4848 (max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
)) {
4849 adapter
->flags2
|= FLAG2_DISABLE_ASPM_L1
;
4850 e1000e_disable_aspm(adapter
->pdev
, PCIE_LINK_STATE_L1
);
4853 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
4855 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
4856 adapter
->max_frame_size
= max_frame
;
4857 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
4858 netdev
->mtu
= new_mtu
;
4859 if (netif_running(netdev
))
4860 e1000e_down(adapter
);
4863 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
4864 * means we reserve 2 more, this pushes us to allocate from the next
4866 * i.e. RXBUFFER_2048 --> size-4096 slab
4867 * However with the new *_jumbo_rx* routines, jumbo receives will use
4871 if (max_frame
<= 2048)
4872 adapter
->rx_buffer_len
= 2048;
4874 adapter
->rx_buffer_len
= 4096;
4876 /* adjust allocation if LPE protects us, and we aren't using SBP */
4877 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
4878 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
4879 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
4882 if (netif_running(netdev
))
4885 e1000e_reset(adapter
);
4887 clear_bit(__E1000_RESETTING
, &adapter
->state
);
4892 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
4895 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4896 struct mii_ioctl_data
*data
= if_mii(ifr
);
4898 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
4903 data
->phy_id
= adapter
->hw
.phy
.addr
;
4906 e1000_phy_read_status(adapter
);
4908 switch (data
->reg_num
& 0x1F) {
4910 data
->val_out
= adapter
->phy_regs
.bmcr
;
4913 data
->val_out
= adapter
->phy_regs
.bmsr
;
4916 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
4919 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
4922 data
->val_out
= adapter
->phy_regs
.advertise
;
4925 data
->val_out
= adapter
->phy_regs
.lpa
;
4928 data
->val_out
= adapter
->phy_regs
.expansion
;
4931 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
4934 data
->val_out
= adapter
->phy_regs
.stat1000
;
4937 data
->val_out
= adapter
->phy_regs
.estatus
;
4950 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4956 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4962 static int e1000_init_phy_wakeup(struct e1000_adapter
*adapter
, u32 wufc
)
4964 struct e1000_hw
*hw
= &adapter
->hw
;
4969 /* copy MAC RARs to PHY RARs */
4970 e1000_copy_rx_addrs_to_phy_ich8lan(hw
);
4972 /* copy MAC MTA to PHY MTA */
4973 for (i
= 0; i
< adapter
->hw
.mac
.mta_reg_count
; i
++) {
4974 mac_reg
= E1000_READ_REG_ARRAY(hw
, E1000_MTA
, i
);
4975 e1e_wphy(hw
, BM_MTA(i
), (u16
)(mac_reg
& 0xFFFF));
4976 e1e_wphy(hw
, BM_MTA(i
) + 1, (u16
)((mac_reg
>> 16) & 0xFFFF));
4979 /* configure PHY Rx Control register */
4980 e1e_rphy(&adapter
->hw
, BM_RCTL
, &phy_reg
);
4981 mac_reg
= er32(RCTL
);
4982 if (mac_reg
& E1000_RCTL_UPE
)
4983 phy_reg
|= BM_RCTL_UPE
;
4984 if (mac_reg
& E1000_RCTL_MPE
)
4985 phy_reg
|= BM_RCTL_MPE
;
4986 phy_reg
&= ~(BM_RCTL_MO_MASK
);
4987 if (mac_reg
& E1000_RCTL_MO_3
)
4988 phy_reg
|= (((mac_reg
& E1000_RCTL_MO_3
) >> E1000_RCTL_MO_SHIFT
)
4989 << BM_RCTL_MO_SHIFT
);
4990 if (mac_reg
& E1000_RCTL_BAM
)
4991 phy_reg
|= BM_RCTL_BAM
;
4992 if (mac_reg
& E1000_RCTL_PMCF
)
4993 phy_reg
|= BM_RCTL_PMCF
;
4994 mac_reg
= er32(CTRL
);
4995 if (mac_reg
& E1000_CTRL_RFCE
)
4996 phy_reg
|= BM_RCTL_RFCE
;
4997 e1e_wphy(&adapter
->hw
, BM_RCTL
, phy_reg
);
4999 /* enable PHY wakeup in MAC register */
5001 ew32(WUC
, E1000_WUC_PHY_WAKE
| E1000_WUC_PME_EN
);
5003 /* configure and enable PHY wakeup in PHY registers */
5004 e1e_wphy(&adapter
->hw
, BM_WUFC
, wufc
);
5005 e1e_wphy(&adapter
->hw
, BM_WUC
, E1000_WUC_PME_EN
);
5007 /* activate PHY wakeup */
5008 retval
= hw
->phy
.ops
.acquire(hw
);
5010 e_err("Could not acquire PHY\n");
5013 e1000e_write_phy_reg_mdic(hw
, IGP01E1000_PHY_PAGE_SELECT
,
5014 (BM_WUC_ENABLE_PAGE
<< IGP_PAGE_SHIFT
));
5015 retval
= e1000e_read_phy_reg_mdic(hw
, BM_WUC_ENABLE_REG
, &phy_reg
);
5017 e_err("Could not read PHY page 769\n");
5020 phy_reg
|= BM_WUC_ENABLE_BIT
| BM_WUC_HOST_WU_BIT
;
5021 retval
= e1000e_write_phy_reg_mdic(hw
, BM_WUC_ENABLE_REG
, phy_reg
);
5023 e_err("Could not set PHY Host Wakeup bit\n");
5025 hw
->phy
.ops
.release(hw
);
5030 static int __e1000_shutdown(struct pci_dev
*pdev
, bool *enable_wake
,
5033 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5034 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5035 struct e1000_hw
*hw
= &adapter
->hw
;
5036 u32 ctrl
, ctrl_ext
, rctl
, status
;
5037 /* Runtime suspend should only enable wakeup for link changes */
5038 u32 wufc
= runtime
? E1000_WUFC_LNKC
: adapter
->wol
;
5041 netif_device_detach(netdev
);
5043 if (netif_running(netdev
)) {
5044 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
5045 e1000e_down(adapter
);
5046 e1000_free_irq(adapter
);
5048 e1000e_reset_interrupt_capability(adapter
);
5050 retval
= pci_save_state(pdev
);
5054 status
= er32(STATUS
);
5055 if (status
& E1000_STATUS_LU
)
5056 wufc
&= ~E1000_WUFC_LNKC
;
5059 e1000_setup_rctl(adapter
);
5060 e1000_set_multi(netdev
);
5062 /* turn on all-multi mode if wake on multicast is enabled */
5063 if (wufc
& E1000_WUFC_MC
) {
5065 rctl
|= E1000_RCTL_MPE
;
5070 /* advertise wake from D3Cold */
5071 #define E1000_CTRL_ADVD3WUC 0x00100000
5072 /* phy power management enable */
5073 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5074 ctrl
|= E1000_CTRL_ADVD3WUC
;
5075 if (!(adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
))
5076 ctrl
|= E1000_CTRL_EN_PHY_PWR_MGMT
;
5079 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
5080 adapter
->hw
.phy
.media_type
==
5081 e1000_media_type_internal_serdes
) {
5082 /* keep the laser running in D3 */
5083 ctrl_ext
= er32(CTRL_EXT
);
5084 ctrl_ext
|= E1000_CTRL_EXT_SDP3_DATA
;
5085 ew32(CTRL_EXT
, ctrl_ext
);
5088 if (adapter
->flags
& FLAG_IS_ICH
)
5089 e1000e_disable_gig_wol_ich8lan(&adapter
->hw
);
5091 /* Allow time for pending master requests to run */
5092 e1000e_disable_pcie_master(&adapter
->hw
);
5094 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
5095 /* enable wakeup by the PHY */
5096 retval
= e1000_init_phy_wakeup(adapter
, wufc
);
5100 /* enable wakeup by the MAC */
5102 ew32(WUC
, E1000_WUC_PME_EN
);
5109 *enable_wake
= !!wufc
;
5111 /* make sure adapter isn't asleep if manageability is enabled */
5112 if ((adapter
->flags
& FLAG_MNG_PT_ENABLED
) ||
5113 (hw
->mac
.ops
.check_mng_mode(hw
)))
5114 *enable_wake
= true;
5116 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
)
5117 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
5120 * Release control of h/w to f/w. If f/w is AMT enabled, this
5121 * would have already happened in close and is redundant.
5123 e1000_release_hw_control(adapter
);
5125 pci_disable_device(pdev
);
5130 static void e1000_power_off(struct pci_dev
*pdev
, bool sleep
, bool wake
)
5132 if (sleep
&& wake
) {
5133 pci_prepare_to_sleep(pdev
);
5137 pci_wake_from_d3(pdev
, wake
);
5138 pci_set_power_state(pdev
, PCI_D3hot
);
5141 static void e1000_complete_shutdown(struct pci_dev
*pdev
, bool sleep
,
5144 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5145 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5148 * The pci-e switch on some quad port adapters will report a
5149 * correctable error when the MAC transitions from D0 to D3. To
5150 * prevent this we need to mask off the correctable errors on the
5151 * downstream port of the pci-e switch.
5153 if (adapter
->flags
& FLAG_IS_QUAD_PORT
) {
5154 struct pci_dev
*us_dev
= pdev
->bus
->self
;
5155 int pos
= pci_find_capability(us_dev
, PCI_CAP_ID_EXP
);
5158 pci_read_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, &devctl
);
5159 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
,
5160 (devctl
& ~PCI_EXP_DEVCTL_CERE
));
5162 e1000_power_off(pdev
, sleep
, wake
);
5164 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, devctl
);
5166 e1000_power_off(pdev
, sleep
, wake
);
5170 #ifdef CONFIG_PCIEASPM
5171 static void __e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5173 pci_disable_link_state(pdev
, state
);
5176 static void __e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5182 * Both device and parent should have the same ASPM setting.
5183 * Disable ASPM in downstream component first and then upstream.
5185 pos
= pci_pcie_cap(pdev
);
5186 pci_read_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, ®16
);
5188 pci_write_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, reg16
);
5190 if (!pdev
->bus
->self
)
5193 pos
= pci_pcie_cap(pdev
->bus
->self
);
5194 pci_read_config_word(pdev
->bus
->self
, pos
+ PCI_EXP_LNKCTL
, ®16
);
5196 pci_write_config_word(pdev
->bus
->self
, pos
+ PCI_EXP_LNKCTL
, reg16
);
5199 void e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5201 dev_info(&pdev
->dev
, "Disabling ASPM %s %s\n",
5202 (state
& PCIE_LINK_STATE_L0S
) ? "L0s" : "",
5203 (state
& PCIE_LINK_STATE_L1
) ? "L1" : "");
5205 __e1000e_disable_aspm(pdev
, state
);
5208 #ifdef CONFIG_PM_OPS
5209 static bool e1000e_pm_ready(struct e1000_adapter
*adapter
)
5211 return !!adapter
->tx_ring
->buffer_info
;
5214 static int __e1000_resume(struct pci_dev
*pdev
)
5216 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5217 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5218 struct e1000_hw
*hw
= &adapter
->hw
;
5221 pci_set_power_state(pdev
, PCI_D0
);
5222 pci_restore_state(pdev
);
5223 pci_save_state(pdev
);
5224 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5225 e1000e_disable_aspm(pdev
, PCIE_LINK_STATE_L1
);
5227 e1000e_set_interrupt_capability(adapter
);
5228 if (netif_running(netdev
)) {
5229 err
= e1000_request_irq(adapter
);
5234 e1000e_power_up_phy(adapter
);
5236 /* report the system wakeup cause from S3/S4 */
5237 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
5240 e1e_rphy(&adapter
->hw
, BM_WUS
, &phy_data
);
5242 e_info("PHY Wakeup cause - %s\n",
5243 phy_data
& E1000_WUS_EX
? "Unicast Packet" :
5244 phy_data
& E1000_WUS_MC
? "Multicast Packet" :
5245 phy_data
& E1000_WUS_BC
? "Broadcast Packet" :
5246 phy_data
& E1000_WUS_MAG
? "Magic Packet" :
5247 phy_data
& E1000_WUS_LNKC
? "Link Status "
5248 " Change" : "other");
5250 e1e_wphy(&adapter
->hw
, BM_WUS
, ~0);
5252 u32 wus
= er32(WUS
);
5254 e_info("MAC Wakeup cause - %s\n",
5255 wus
& E1000_WUS_EX
? "Unicast Packet" :
5256 wus
& E1000_WUS_MC
? "Multicast Packet" :
5257 wus
& E1000_WUS_BC
? "Broadcast Packet" :
5258 wus
& E1000_WUS_MAG
? "Magic Packet" :
5259 wus
& E1000_WUS_LNKC
? "Link Status Change" :
5265 e1000e_reset(adapter
);
5267 e1000_init_manageability_pt(adapter
);
5269 if (netif_running(netdev
))
5272 netif_device_attach(netdev
);
5275 * If the controller has AMT, do not set DRV_LOAD until the interface
5276 * is up. For all other cases, let the f/w know that the h/w is now
5277 * under the control of the driver.
5279 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5280 e1000_get_hw_control(adapter
);
5285 #ifdef CONFIG_PM_SLEEP
5286 static int e1000_suspend(struct device
*dev
)
5288 struct pci_dev
*pdev
= to_pci_dev(dev
);
5292 retval
= __e1000_shutdown(pdev
, &wake
, false);
5294 e1000_complete_shutdown(pdev
, true, wake
);
5299 static int e1000_resume(struct device
*dev
)
5301 struct pci_dev
*pdev
= to_pci_dev(dev
);
5302 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5303 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5305 if (e1000e_pm_ready(adapter
))
5306 adapter
->idle_check
= true;
5308 return __e1000_resume(pdev
);
5310 #endif /* CONFIG_PM_SLEEP */
5312 #ifdef CONFIG_PM_RUNTIME
5313 static int e1000_runtime_suspend(struct device
*dev
)
5315 struct pci_dev
*pdev
= to_pci_dev(dev
);
5316 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5317 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5319 if (e1000e_pm_ready(adapter
)) {
5322 __e1000_shutdown(pdev
, &wake
, true);
5328 static int e1000_idle(struct device
*dev
)
5330 struct pci_dev
*pdev
= to_pci_dev(dev
);
5331 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5332 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5334 if (!e1000e_pm_ready(adapter
))
5337 if (adapter
->idle_check
) {
5338 adapter
->idle_check
= false;
5339 if (!e1000e_has_link(adapter
))
5340 pm_schedule_suspend(dev
, MSEC_PER_SEC
);
5346 static int e1000_runtime_resume(struct device
*dev
)
5348 struct pci_dev
*pdev
= to_pci_dev(dev
);
5349 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5350 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5352 if (!e1000e_pm_ready(adapter
))
5355 adapter
->idle_check
= !dev
->power
.runtime_auto
;
5356 return __e1000_resume(pdev
);
5358 #endif /* CONFIG_PM_RUNTIME */
5359 #endif /* CONFIG_PM_OPS */
5361 static void e1000_shutdown(struct pci_dev
*pdev
)
5365 __e1000_shutdown(pdev
, &wake
, false);
5367 if (system_state
== SYSTEM_POWER_OFF
)
5368 e1000_complete_shutdown(pdev
, false, wake
);
5371 #ifdef CONFIG_NET_POLL_CONTROLLER
5373 * Polling 'interrupt' - used by things like netconsole to send skbs
5374 * without having to re-enable interrupts. It's not called while
5375 * the interrupt routine is executing.
5377 static void e1000_netpoll(struct net_device
*netdev
)
5379 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5381 disable_irq(adapter
->pdev
->irq
);
5382 e1000_intr(adapter
->pdev
->irq
, netdev
);
5384 enable_irq(adapter
->pdev
->irq
);
5389 * e1000_io_error_detected - called when PCI error is detected
5390 * @pdev: Pointer to PCI device
5391 * @state: The current pci connection state
5393 * This function is called after a PCI bus error affecting
5394 * this device has been detected.
5396 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
5397 pci_channel_state_t state
)
5399 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5400 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5402 netif_device_detach(netdev
);
5404 if (state
== pci_channel_io_perm_failure
)
5405 return PCI_ERS_RESULT_DISCONNECT
;
5407 if (netif_running(netdev
))
5408 e1000e_down(adapter
);
5409 pci_disable_device(pdev
);
5411 /* Request a slot slot reset. */
5412 return PCI_ERS_RESULT_NEED_RESET
;
5416 * e1000_io_slot_reset - called after the pci bus has been reset.
5417 * @pdev: Pointer to PCI device
5419 * Restart the card from scratch, as if from a cold-boot. Implementation
5420 * resembles the first-half of the e1000_resume routine.
5422 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
5424 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5425 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5426 struct e1000_hw
*hw
= &adapter
->hw
;
5428 pci_ers_result_t result
;
5430 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5431 e1000e_disable_aspm(pdev
, PCIE_LINK_STATE_L1
);
5432 err
= pci_enable_device_mem(pdev
);
5435 "Cannot re-enable PCI device after reset.\n");
5436 result
= PCI_ERS_RESULT_DISCONNECT
;
5438 pci_set_master(pdev
);
5439 pdev
->state_saved
= true;
5440 pci_restore_state(pdev
);
5442 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5443 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5445 e1000e_reset(adapter
);
5447 result
= PCI_ERS_RESULT_RECOVERED
;
5450 pci_cleanup_aer_uncorrect_error_status(pdev
);
5456 * e1000_io_resume - called when traffic can start flowing again.
5457 * @pdev: Pointer to PCI device
5459 * This callback is called when the error recovery driver tells us that
5460 * its OK to resume normal operation. Implementation resembles the
5461 * second-half of the e1000_resume routine.
5463 static void e1000_io_resume(struct pci_dev
*pdev
)
5465 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5466 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5468 e1000_init_manageability_pt(adapter
);
5470 if (netif_running(netdev
)) {
5471 if (e1000e_up(adapter
)) {
5473 "can't bring device back up after reset\n");
5478 netif_device_attach(netdev
);
5481 * If the controller has AMT, do not set DRV_LOAD until the interface
5482 * is up. For all other cases, let the f/w know that the h/w is now
5483 * under the control of the driver.
5485 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5486 e1000_get_hw_control(adapter
);
5490 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
5492 struct e1000_hw
*hw
= &adapter
->hw
;
5493 struct net_device
*netdev
= adapter
->netdev
;
5496 /* print bus type/speed/width info */
5497 e_info("(PCI Express:2.5GB/s:%s) %pM\n",
5499 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
5503 e_info("Intel(R) PRO/%s Network Connection\n",
5504 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
5505 e1000e_read_pba_num(hw
, &pba_num
);
5506 e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
5507 hw
->mac
.type
, hw
->phy
.type
, (pba_num
>> 8), (pba_num
& 0xff));
5510 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
5512 struct e1000_hw
*hw
= &adapter
->hw
;
5516 if (hw
->mac
.type
!= e1000_82573
)
5519 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
5520 if (!ret_val
&& (!(le16_to_cpu(buf
) & (1 << 0)))) {
5521 /* Deep Smart Power Down (DSPD) */
5522 dev_warn(&adapter
->pdev
->dev
,
5523 "Warning: detected DSPD enabled in EEPROM\n");
5527 static const struct net_device_ops e1000e_netdev_ops
= {
5528 .ndo_open
= e1000_open
,
5529 .ndo_stop
= e1000_close
,
5530 .ndo_start_xmit
= e1000_xmit_frame
,
5531 .ndo_get_stats
= e1000_get_stats
,
5532 .ndo_set_multicast_list
= e1000_set_multi
,
5533 .ndo_set_mac_address
= e1000_set_mac
,
5534 .ndo_change_mtu
= e1000_change_mtu
,
5535 .ndo_do_ioctl
= e1000_ioctl
,
5536 .ndo_tx_timeout
= e1000_tx_timeout
,
5537 .ndo_validate_addr
= eth_validate_addr
,
5539 .ndo_vlan_rx_register
= e1000_vlan_rx_register
,
5540 .ndo_vlan_rx_add_vid
= e1000_vlan_rx_add_vid
,
5541 .ndo_vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
,
5542 #ifdef CONFIG_NET_POLL_CONTROLLER
5543 .ndo_poll_controller
= e1000_netpoll
,
5548 * e1000_probe - Device Initialization Routine
5549 * @pdev: PCI device information struct
5550 * @ent: entry in e1000_pci_tbl
5552 * Returns 0 on success, negative on failure
5554 * e1000_probe initializes an adapter identified by a pci_dev structure.
5555 * The OS initialization, configuring of the adapter private structure,
5556 * and a hardware reset occur.
5558 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
5559 const struct pci_device_id
*ent
)
5561 struct net_device
*netdev
;
5562 struct e1000_adapter
*adapter
;
5563 struct e1000_hw
*hw
;
5564 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
5565 resource_size_t mmio_start
, mmio_len
;
5566 resource_size_t flash_start
, flash_len
;
5568 static int cards_found
;
5569 int i
, err
, pci_using_dac
;
5570 u16 eeprom_data
= 0;
5571 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
5573 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5574 e1000e_disable_aspm(pdev
, PCIE_LINK_STATE_L1
);
5576 err
= pci_enable_device_mem(pdev
);
5581 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(64));
5583 err
= dma_set_coherent_mask(&pdev
->dev
, DMA_BIT_MASK(64));
5587 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(32));
5589 err
= dma_set_coherent_mask(&pdev
->dev
,
5592 dev_err(&pdev
->dev
, "No usable DMA "
5593 "configuration, aborting\n");
5599 err
= pci_request_selected_regions_exclusive(pdev
,
5600 pci_select_bars(pdev
, IORESOURCE_MEM
),
5601 e1000e_driver_name
);
5605 /* AER (Advanced Error Reporting) hooks */
5606 pci_enable_pcie_error_reporting(pdev
);
5608 pci_set_master(pdev
);
5609 /* PCI config space info */
5610 err
= pci_save_state(pdev
);
5612 goto err_alloc_etherdev
;
5615 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
5617 goto err_alloc_etherdev
;
5619 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
5621 netdev
->irq
= pdev
->irq
;
5623 pci_set_drvdata(pdev
, netdev
);
5624 adapter
= netdev_priv(netdev
);
5626 adapter
->netdev
= netdev
;
5627 adapter
->pdev
= pdev
;
5629 adapter
->pba
= ei
->pba
;
5630 adapter
->flags
= ei
->flags
;
5631 adapter
->flags2
= ei
->flags2
;
5632 adapter
->hw
.adapter
= adapter
;
5633 adapter
->hw
.mac
.type
= ei
->mac
;
5634 adapter
->max_hw_frame_size
= ei
->max_hw_frame_size
;
5635 adapter
->msg_enable
= (1 << NETIF_MSG_DRV
| NETIF_MSG_PROBE
) - 1;
5637 mmio_start
= pci_resource_start(pdev
, 0);
5638 mmio_len
= pci_resource_len(pdev
, 0);
5641 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
5642 if (!adapter
->hw
.hw_addr
)
5645 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
5646 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
5647 flash_start
= pci_resource_start(pdev
, 1);
5648 flash_len
= pci_resource_len(pdev
, 1);
5649 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
5650 if (!adapter
->hw
.flash_address
)
5654 /* construct the net_device struct */
5655 netdev
->netdev_ops
= &e1000e_netdev_ops
;
5656 e1000e_set_ethtool_ops(netdev
);
5657 netdev
->watchdog_timeo
= 5 * HZ
;
5658 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
5659 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
5661 netdev
->mem_start
= mmio_start
;
5662 netdev
->mem_end
= mmio_start
+ mmio_len
;
5664 adapter
->bd_number
= cards_found
++;
5666 e1000e_check_options(adapter
);
5668 /* setup adapter struct */
5669 err
= e1000_sw_init(adapter
);
5673 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
5674 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
5675 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
5677 err
= ei
->get_variants(adapter
);
5681 if ((adapter
->flags
& FLAG_IS_ICH
) &&
5682 (adapter
->flags
& FLAG_READ_ONLY_NVM
))
5683 e1000e_write_protect_nvm_ich8lan(&adapter
->hw
);
5685 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
5687 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
5689 /* Copper options */
5690 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
5691 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
5692 adapter
->hw
.phy
.disable_polarity_correction
= 0;
5693 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
5696 if (e1000_check_reset_block(&adapter
->hw
))
5697 e_info("PHY reset is blocked due to SOL/IDER session.\n");
5699 netdev
->features
= NETIF_F_SG
|
5701 NETIF_F_HW_VLAN_TX
|
5704 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
5705 netdev
->features
|= NETIF_F_HW_VLAN_FILTER
;
5707 netdev
->features
|= NETIF_F_TSO
;
5708 netdev
->features
|= NETIF_F_TSO6
;
5710 netdev
->vlan_features
|= NETIF_F_TSO
;
5711 netdev
->vlan_features
|= NETIF_F_TSO6
;
5712 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
5713 netdev
->vlan_features
|= NETIF_F_SG
;
5716 netdev
->features
|= NETIF_F_HIGHDMA
;
5718 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
5719 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
5722 * before reading the NVM, reset the controller to
5723 * put the device in a known good starting state
5725 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
5728 * systems with ASPM and others may see the checksum fail on the first
5729 * attempt. Let's give it a few tries
5732 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
5735 e_err("The NVM Checksum Is Not Valid\n");
5741 e1000_eeprom_checks(adapter
);
5743 /* copy the MAC address */
5744 if (e1000e_read_mac_addr(&adapter
->hw
))
5745 e_err("NVM Read Error while reading MAC address\n");
5747 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
5748 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
5750 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
5751 e_err("Invalid MAC Address: %pM\n", netdev
->perm_addr
);
5756 init_timer(&adapter
->watchdog_timer
);
5757 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
5758 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
5760 init_timer(&adapter
->phy_info_timer
);
5761 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
5762 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
5764 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
5765 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
5766 INIT_WORK(&adapter
->downshift_task
, e1000e_downshift_workaround
);
5767 INIT_WORK(&adapter
->update_phy_task
, e1000e_update_phy_task
);
5768 INIT_WORK(&adapter
->print_hang_task
, e1000_print_hw_hang
);
5770 /* Initialize link parameters. User can change them with ethtool */
5771 adapter
->hw
.mac
.autoneg
= 1;
5772 adapter
->fc_autoneg
= 1;
5773 adapter
->hw
.fc
.requested_mode
= e1000_fc_default
;
5774 adapter
->hw
.fc
.current_mode
= e1000_fc_default
;
5775 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
5777 /* ring size defaults */
5778 adapter
->rx_ring
->count
= 256;
5779 adapter
->tx_ring
->count
= 256;
5782 * Initial Wake on LAN setting - If APM wake is enabled in
5783 * the EEPROM, enable the ACPI Magic Packet filter
5785 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
5786 /* APME bit in EEPROM is mapped to WUC.APME */
5787 eeprom_data
= er32(WUC
);
5788 eeprom_apme_mask
= E1000_WUC_APME
;
5789 if (eeprom_data
& E1000_WUC_PHY_WAKE
)
5790 adapter
->flags2
|= FLAG2_HAS_PHY_WAKEUP
;
5791 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
5792 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
5793 (adapter
->hw
.bus
.func
== 1))
5794 e1000_read_nvm(&adapter
->hw
,
5795 NVM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
5797 e1000_read_nvm(&adapter
->hw
,
5798 NVM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
5801 /* fetch WoL from EEPROM */
5802 if (eeprom_data
& eeprom_apme_mask
)
5803 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
5806 * now that we have the eeprom settings, apply the special cases
5807 * where the eeprom may be wrong or the board simply won't support
5808 * wake on lan on a particular port
5810 if (!(adapter
->flags
& FLAG_HAS_WOL
))
5811 adapter
->eeprom_wol
= 0;
5813 /* initialize the wol settings based on the eeprom settings */
5814 adapter
->wol
= adapter
->eeprom_wol
;
5815 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
5817 /* save off EEPROM version number */
5818 e1000_read_nvm(&adapter
->hw
, 5, 1, &adapter
->eeprom_vers
);
5820 /* reset the hardware with the new settings */
5821 e1000e_reset(adapter
);
5824 * If the controller has AMT, do not set DRV_LOAD until the interface
5825 * is up. For all other cases, let the f/w know that the h/w is now
5826 * under the control of the driver.
5828 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5829 e1000_get_hw_control(adapter
);
5831 strcpy(netdev
->name
, "eth%d");
5832 err
= register_netdev(netdev
);
5836 /* carrier off reporting is important to ethtool even BEFORE open */
5837 netif_carrier_off(netdev
);
5839 e1000_print_device_info(adapter
);
5841 if (pci_dev_run_wake(pdev
))
5842 pm_runtime_put_noidle(&pdev
->dev
);
5847 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5848 e1000_release_hw_control(adapter
);
5850 if (!e1000_check_reset_block(&adapter
->hw
))
5851 e1000_phy_hw_reset(&adapter
->hw
);
5854 kfree(adapter
->tx_ring
);
5855 kfree(adapter
->rx_ring
);
5857 if (adapter
->hw
.flash_address
)
5858 iounmap(adapter
->hw
.flash_address
);
5859 e1000e_reset_interrupt_capability(adapter
);
5861 iounmap(adapter
->hw
.hw_addr
);
5863 free_netdev(netdev
);
5865 pci_release_selected_regions(pdev
,
5866 pci_select_bars(pdev
, IORESOURCE_MEM
));
5869 pci_disable_device(pdev
);
5874 * e1000_remove - Device Removal Routine
5875 * @pdev: PCI device information struct
5877 * e1000_remove is called by the PCI subsystem to alert the driver
5878 * that it should release a PCI device. The could be caused by a
5879 * Hot-Plug event, or because the driver is going to be removed from
5882 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
5884 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5885 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5886 bool down
= test_bit(__E1000_DOWN
, &adapter
->state
);
5889 * flush_scheduled work may reschedule our watchdog task, so
5890 * explicitly disable watchdog tasks from being rescheduled
5893 set_bit(__E1000_DOWN
, &adapter
->state
);
5894 del_timer_sync(&adapter
->watchdog_timer
);
5895 del_timer_sync(&adapter
->phy_info_timer
);
5897 cancel_work_sync(&adapter
->reset_task
);
5898 cancel_work_sync(&adapter
->watchdog_task
);
5899 cancel_work_sync(&adapter
->downshift_task
);
5900 cancel_work_sync(&adapter
->update_phy_task
);
5901 cancel_work_sync(&adapter
->print_hang_task
);
5902 flush_scheduled_work();
5904 if (!(netdev
->flags
& IFF_UP
))
5905 e1000_power_down_phy(adapter
);
5907 /* Don't lie to e1000_close() down the road. */
5909 clear_bit(__E1000_DOWN
, &adapter
->state
);
5910 unregister_netdev(netdev
);
5912 if (pci_dev_run_wake(pdev
))
5913 pm_runtime_get_noresume(&pdev
->dev
);
5916 * Release control of h/w to f/w. If f/w is AMT enabled, this
5917 * would have already happened in close and is redundant.
5919 e1000_release_hw_control(adapter
);
5921 e1000e_reset_interrupt_capability(adapter
);
5922 kfree(adapter
->tx_ring
);
5923 kfree(adapter
->rx_ring
);
5925 iounmap(adapter
->hw
.hw_addr
);
5926 if (adapter
->hw
.flash_address
)
5927 iounmap(adapter
->hw
.flash_address
);
5928 pci_release_selected_regions(pdev
,
5929 pci_select_bars(pdev
, IORESOURCE_MEM
));
5931 free_netdev(netdev
);
5934 pci_disable_pcie_error_reporting(pdev
);
5936 pci_disable_device(pdev
);
5939 /* PCI Error Recovery (ERS) */
5940 static struct pci_error_handlers e1000_err_handler
= {
5941 .error_detected
= e1000_io_error_detected
,
5942 .slot_reset
= e1000_io_slot_reset
,
5943 .resume
= e1000_io_resume
,
5946 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl
) = {
5947 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
5948 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
5949 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
5950 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
), board_82571
},
5951 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
5952 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
5953 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
5954 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
5955 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
5957 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
5958 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
5959 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
5960 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
5962 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
5963 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
5964 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
5966 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574L
), board_82574
},
5967 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574LA
), board_82574
},
5968 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82583V
), board_82583
},
5970 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
5971 board_80003es2lan
},
5972 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
5973 board_80003es2lan
},
5974 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
5975 board_80003es2lan
},
5976 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
5977 board_80003es2lan
},
5979 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
5980 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
5981 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
5982 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
5983 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
5984 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
5985 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
5986 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_82567V_3
), board_ich8lan
},
5988 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
5989 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
5990 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
5991 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
5992 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
5993 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_BM
), board_ich9lan
},
5994 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
5995 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
5996 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
5998 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
5999 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
6000 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
6002 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LM
), board_ich10lan
},
6003 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LF
), board_ich10lan
},
6004 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_V
), board_ich10lan
},
6006 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LM
), board_pchlan
},
6007 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LC
), board_pchlan
},
6008 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DM
), board_pchlan
},
6009 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DC
), board_pchlan
},
6011 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_LM
), board_pch2lan
},
6012 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_V
), board_pch2lan
},
6014 { } /* terminate list */
6016 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
6018 #ifdef CONFIG_PM_OPS
6019 static const struct dev_pm_ops e1000_pm_ops
= {
6020 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend
, e1000_resume
)
6021 SET_RUNTIME_PM_OPS(e1000_runtime_suspend
,
6022 e1000_runtime_resume
, e1000_idle
)
6026 /* PCI Device API Driver */
6027 static struct pci_driver e1000_driver
= {
6028 .name
= e1000e_driver_name
,
6029 .id_table
= e1000_pci_tbl
,
6030 .probe
= e1000_probe
,
6031 .remove
= __devexit_p(e1000_remove
),
6032 #ifdef CONFIG_PM_OPS
6033 .driver
.pm
= &e1000_pm_ops
,
6035 .shutdown
= e1000_shutdown
,
6036 .err_handler
= &e1000_err_handler
6040 * e1000_init_module - Driver Registration Routine
6042 * e1000_init_module is the first routine called when the driver is
6043 * loaded. All it does is register with the PCI subsystem.
6045 static int __init
e1000_init_module(void)
6048 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
6049 e1000e_driver_version
);
6050 pr_info("Copyright (c) 1999 - 2010 Intel Corporation.\n");
6051 ret
= pci_register_driver(&e1000_driver
);
6055 module_init(e1000_init_module
);
6058 * e1000_exit_module - Driver Exit Cleanup Routine
6060 * e1000_exit_module is called just before the driver is removed
6063 static void __exit
e1000_exit_module(void)
6065 pci_unregister_driver(&e1000_driver
);
6067 module_exit(e1000_exit_module
);
6070 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
6071 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
6072 MODULE_LICENSE("GPL");
6073 MODULE_VERSION(DRV_VERSION
);