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
)
785 status
= rx_desc
->status
;
786 skb
= buffer_info
->skb
;
787 buffer_info
->skb
= NULL
;
789 prefetch(skb
->data
- NET_IP_ALIGN
);
792 if (i
== rx_ring
->count
)
794 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
797 next_buffer
= &rx_ring
->buffer_info
[i
];
801 dma_unmap_single(&pdev
->dev
,
803 adapter
->rx_buffer_len
,
805 buffer_info
->dma
= 0;
807 length
= le16_to_cpu(rx_desc
->length
);
810 * !EOP means multiple descriptors were used to store a single
811 * packet, if that's the case we need to toss it. In fact, we
812 * need to toss every packet with the EOP bit clear and the
813 * next frame that _does_ have the EOP bit set, as it is by
814 * definition only a frame fragment
816 if (unlikely(!(status
& E1000_RXD_STAT_EOP
)))
817 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
819 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
820 /* All receives must fit into a single buffer */
821 e_dbg("Receive packet consumed multiple buffers\n");
823 buffer_info
->skb
= skb
;
824 if (status
& E1000_RXD_STAT_EOP
)
825 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
829 if (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
) {
831 buffer_info
->skb
= skb
;
835 /* adjust length to remove Ethernet CRC */
836 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
839 total_rx_bytes
+= length
;
843 * code added for copybreak, this should improve
844 * performance for small packets with large amounts
845 * of reassembly being done in the stack
847 if (length
< copybreak
) {
848 struct sk_buff
*new_skb
=
849 netdev_alloc_skb_ip_align(netdev
, length
);
851 skb_copy_to_linear_data_offset(new_skb
,
857 /* save the skb in buffer_info as good */
858 buffer_info
->skb
= skb
;
861 /* else just continue with the old one */
863 /* end copybreak code */
864 skb_put(skb
, length
);
866 /* Receive Checksum Offload */
867 e1000_rx_checksum(adapter
,
869 ((u32
)(rx_desc
->errors
) << 24),
870 le16_to_cpu(rx_desc
->csum
), skb
);
872 e1000_receive_skb(adapter
, netdev
, skb
,status
,rx_desc
->special
);
877 /* return some buffers to hardware, one at a time is too slow */
878 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
879 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
883 /* use prefetched values */
885 buffer_info
= next_buffer
;
887 rx_ring
->next_to_clean
= i
;
889 cleaned_count
= e1000_desc_unused(rx_ring
);
891 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
893 adapter
->total_rx_bytes
+= total_rx_bytes
;
894 adapter
->total_rx_packets
+= total_rx_packets
;
895 netdev
->stats
.rx_bytes
+= total_rx_bytes
;
896 netdev
->stats
.rx_packets
+= total_rx_packets
;
900 static void e1000_put_txbuf(struct e1000_adapter
*adapter
,
901 struct e1000_buffer
*buffer_info
)
903 if (buffer_info
->dma
) {
904 if (buffer_info
->mapped_as_page
)
905 dma_unmap_page(&adapter
->pdev
->dev
, buffer_info
->dma
,
906 buffer_info
->length
, DMA_TO_DEVICE
);
908 dma_unmap_single(&adapter
->pdev
->dev
, buffer_info
->dma
,
909 buffer_info
->length
, DMA_TO_DEVICE
);
910 buffer_info
->dma
= 0;
912 if (buffer_info
->skb
) {
913 dev_kfree_skb_any(buffer_info
->skb
);
914 buffer_info
->skb
= NULL
;
916 buffer_info
->time_stamp
= 0;
919 static void e1000_print_hw_hang(struct work_struct
*work
)
921 struct e1000_adapter
*adapter
= container_of(work
,
922 struct e1000_adapter
,
924 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
925 unsigned int i
= tx_ring
->next_to_clean
;
926 unsigned int eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
927 struct e1000_tx_desc
*eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
928 struct e1000_hw
*hw
= &adapter
->hw
;
929 u16 phy_status
, phy_1000t_status
, phy_ext_status
;
932 e1e_rphy(hw
, PHY_STATUS
, &phy_status
);
933 e1e_rphy(hw
, PHY_1000T_STATUS
, &phy_1000t_status
);
934 e1e_rphy(hw
, PHY_EXT_STATUS
, &phy_ext_status
);
936 pci_read_config_word(adapter
->pdev
, PCI_STATUS
, &pci_status
);
938 /* detected Hardware unit hang */
939 e_err("Detected Hardware Unit Hang:\n"
942 " next_to_use <%x>\n"
943 " next_to_clean <%x>\n"
944 "buffer_info[next_to_clean]:\n"
945 " time_stamp <%lx>\n"
946 " next_to_watch <%x>\n"
948 " next_to_watch.status <%x>\n"
951 "PHY 1000BASE-T Status <%x>\n"
952 "PHY Extended Status <%x>\n"
954 readl(adapter
->hw
.hw_addr
+ tx_ring
->head
),
955 readl(adapter
->hw
.hw_addr
+ tx_ring
->tail
),
956 tx_ring
->next_to_use
,
957 tx_ring
->next_to_clean
,
958 tx_ring
->buffer_info
[eop
].time_stamp
,
961 eop_desc
->upper
.fields
.status
,
970 * e1000_clean_tx_irq - Reclaim resources after transmit completes
971 * @adapter: board private structure
973 * the return value indicates whether actual cleaning was done, there
974 * is no guarantee that everything was cleaned
976 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
)
978 struct net_device
*netdev
= adapter
->netdev
;
979 struct e1000_hw
*hw
= &adapter
->hw
;
980 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
981 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
982 struct e1000_buffer
*buffer_info
;
984 unsigned int count
= 0;
985 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
987 i
= tx_ring
->next_to_clean
;
988 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
989 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
991 while ((eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
992 (count
< tx_ring
->count
)) {
993 bool cleaned
= false;
994 for (; !cleaned
; count
++) {
995 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
996 buffer_info
= &tx_ring
->buffer_info
[i
];
997 cleaned
= (i
== eop
);
1000 total_tx_packets
+= buffer_info
->segs
;
1001 total_tx_bytes
+= buffer_info
->bytecount
;
1004 e1000_put_txbuf(adapter
, buffer_info
);
1005 tx_desc
->upper
.data
= 0;
1008 if (i
== tx_ring
->count
)
1012 if (i
== tx_ring
->next_to_use
)
1014 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1015 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1018 tx_ring
->next_to_clean
= i
;
1020 #define TX_WAKE_THRESHOLD 32
1021 if (count
&& netif_carrier_ok(netdev
) &&
1022 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
1023 /* Make sure that anybody stopping the queue after this
1024 * sees the new next_to_clean.
1028 if (netif_queue_stopped(netdev
) &&
1029 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
1030 netif_wake_queue(netdev
);
1031 ++adapter
->restart_queue
;
1035 if (adapter
->detect_tx_hung
) {
1037 * Detect a transmit hang in hardware, this serializes the
1038 * check with the clearing of time_stamp and movement of i
1040 adapter
->detect_tx_hung
= 0;
1041 if (tx_ring
->buffer_info
[i
].time_stamp
&&
1042 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
1043 + (adapter
->tx_timeout_factor
* HZ
)) &&
1044 !(er32(STATUS
) & E1000_STATUS_TXOFF
)) {
1045 schedule_work(&adapter
->print_hang_task
);
1046 netif_stop_queue(netdev
);
1049 adapter
->total_tx_bytes
+= total_tx_bytes
;
1050 adapter
->total_tx_packets
+= total_tx_packets
;
1051 netdev
->stats
.tx_bytes
+= total_tx_bytes
;
1052 netdev
->stats
.tx_packets
+= total_tx_packets
;
1053 return (count
< tx_ring
->count
);
1057 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
1058 * @adapter: board private structure
1060 * the return value indicates whether actual cleaning was done, there
1061 * is no guarantee that everything was cleaned
1063 static bool e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
1064 int *work_done
, int work_to_do
)
1066 struct e1000_hw
*hw
= &adapter
->hw
;
1067 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
1068 struct net_device
*netdev
= adapter
->netdev
;
1069 struct pci_dev
*pdev
= adapter
->pdev
;
1070 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1071 struct e1000_buffer
*buffer_info
, *next_buffer
;
1072 struct e1000_ps_page
*ps_page
;
1073 struct sk_buff
*skb
;
1075 u32 length
, staterr
;
1076 int cleaned_count
= 0;
1078 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
1080 i
= rx_ring
->next_to_clean
;
1081 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
1082 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1083 buffer_info
= &rx_ring
->buffer_info
[i
];
1085 while (staterr
& E1000_RXD_STAT_DD
) {
1086 if (*work_done
>= work_to_do
)
1089 skb
= buffer_info
->skb
;
1091 /* in the packet split case this is header only */
1092 prefetch(skb
->data
- NET_IP_ALIGN
);
1095 if (i
== rx_ring
->count
)
1097 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
1100 next_buffer
= &rx_ring
->buffer_info
[i
];
1104 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1105 adapter
->rx_ps_bsize0
,
1107 buffer_info
->dma
= 0;
1109 /* see !EOP comment in other rx routine */
1110 if (!(staterr
& E1000_RXD_STAT_EOP
))
1111 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
1113 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
1114 e_dbg("Packet Split buffers didn't pick up the full "
1116 dev_kfree_skb_irq(skb
);
1117 if (staterr
& E1000_RXD_STAT_EOP
)
1118 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1122 if (staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) {
1123 dev_kfree_skb_irq(skb
);
1127 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
1130 e_dbg("Last part of the packet spanning multiple "
1132 dev_kfree_skb_irq(skb
);
1137 skb_put(skb
, length
);
1141 * this looks ugly, but it seems compiler issues make it
1142 * more efficient than reusing j
1144 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
1147 * page alloc/put takes too long and effects small packet
1148 * throughput, so unsplit small packets and save the alloc/put
1149 * only valid in softirq (napi) context to call kmap_*
1151 if (l1
&& (l1
<= copybreak
) &&
1152 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
1155 ps_page
= &buffer_info
->ps_pages
[0];
1158 * there is no documentation about how to call
1159 * kmap_atomic, so we can't hold the mapping
1162 dma_sync_single_for_cpu(&pdev
->dev
, ps_page
->dma
,
1163 PAGE_SIZE
, DMA_FROM_DEVICE
);
1164 vaddr
= kmap_atomic(ps_page
->page
, KM_SKB_DATA_SOFTIRQ
);
1165 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
1166 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
1167 dma_sync_single_for_device(&pdev
->dev
, ps_page
->dma
,
1168 PAGE_SIZE
, DMA_FROM_DEVICE
);
1170 /* remove the CRC */
1171 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
1179 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1180 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
1184 ps_page
= &buffer_info
->ps_pages
[j
];
1185 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1188 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
1189 ps_page
->page
= NULL
;
1191 skb
->data_len
+= length
;
1192 skb
->truesize
+= length
;
1195 /* strip the ethernet crc, problem is we're using pages now so
1196 * this whole operation can get a little cpu intensive
1198 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
1199 pskb_trim(skb
, skb
->len
- 4);
1202 total_rx_bytes
+= skb
->len
;
1205 e1000_rx_checksum(adapter
, staterr
, le16_to_cpu(
1206 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
1208 if (rx_desc
->wb
.upper
.header_status
&
1209 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
1210 adapter
->rx_hdr_split
++;
1212 e1000_receive_skb(adapter
, netdev
, skb
,
1213 staterr
, rx_desc
->wb
.middle
.vlan
);
1216 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
1217 buffer_info
->skb
= NULL
;
1219 /* return some buffers to hardware, one at a time is too slow */
1220 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
1221 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1225 /* use prefetched values */
1227 buffer_info
= next_buffer
;
1229 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1231 rx_ring
->next_to_clean
= i
;
1233 cleaned_count
= e1000_desc_unused(rx_ring
);
1235 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1237 adapter
->total_rx_bytes
+= total_rx_bytes
;
1238 adapter
->total_rx_packets
+= total_rx_packets
;
1239 netdev
->stats
.rx_bytes
+= total_rx_bytes
;
1240 netdev
->stats
.rx_packets
+= total_rx_packets
;
1245 * e1000_consume_page - helper function
1247 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
1252 skb
->data_len
+= length
;
1253 skb
->truesize
+= length
;
1257 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1258 * @adapter: board private structure
1260 * the return value indicates whether actual cleaning was done, there
1261 * is no guarantee that everything was cleaned
1264 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter
*adapter
,
1265 int *work_done
, int work_to_do
)
1267 struct net_device
*netdev
= adapter
->netdev
;
1268 struct pci_dev
*pdev
= adapter
->pdev
;
1269 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1270 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
1271 struct e1000_buffer
*buffer_info
, *next_buffer
;
1274 int cleaned_count
= 0;
1275 bool cleaned
= false;
1276 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
1278 i
= rx_ring
->next_to_clean
;
1279 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
1280 buffer_info
= &rx_ring
->buffer_info
[i
];
1282 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
1283 struct sk_buff
*skb
;
1286 if (*work_done
>= work_to_do
)
1290 status
= rx_desc
->status
;
1291 skb
= buffer_info
->skb
;
1292 buffer_info
->skb
= NULL
;
1295 if (i
== rx_ring
->count
)
1297 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
1300 next_buffer
= &rx_ring
->buffer_info
[i
];
1304 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
, PAGE_SIZE
,
1306 buffer_info
->dma
= 0;
1308 length
= le16_to_cpu(rx_desc
->length
);
1310 /* errors is only valid for DD + EOP descriptors */
1311 if (unlikely((status
& E1000_RXD_STAT_EOP
) &&
1312 (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
))) {
1313 /* recycle both page and skb */
1314 buffer_info
->skb
= skb
;
1315 /* an error means any chain goes out the window
1317 if (rx_ring
->rx_skb_top
)
1318 dev_kfree_skb(rx_ring
->rx_skb_top
);
1319 rx_ring
->rx_skb_top
= NULL
;
1323 #define rxtop rx_ring->rx_skb_top
1324 if (!(status
& E1000_RXD_STAT_EOP
)) {
1325 /* this descriptor is only the beginning (or middle) */
1327 /* this is the beginning of a chain */
1329 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
1332 /* this is the middle of a chain */
1333 skb_fill_page_desc(rxtop
,
1334 skb_shinfo(rxtop
)->nr_frags
,
1335 buffer_info
->page
, 0, length
);
1336 /* re-use the skb, only consumed the page */
1337 buffer_info
->skb
= skb
;
1339 e1000_consume_page(buffer_info
, rxtop
, length
);
1343 /* end of the chain */
1344 skb_fill_page_desc(rxtop
,
1345 skb_shinfo(rxtop
)->nr_frags
,
1346 buffer_info
->page
, 0, length
);
1347 /* re-use the current skb, we only consumed the
1349 buffer_info
->skb
= skb
;
1352 e1000_consume_page(buffer_info
, skb
, length
);
1354 /* no chain, got EOP, this buf is the packet
1355 * copybreak to save the put_page/alloc_page */
1356 if (length
<= copybreak
&&
1357 skb_tailroom(skb
) >= length
) {
1359 vaddr
= kmap_atomic(buffer_info
->page
,
1360 KM_SKB_DATA_SOFTIRQ
);
1361 memcpy(skb_tail_pointer(skb
), vaddr
,
1363 kunmap_atomic(vaddr
,
1364 KM_SKB_DATA_SOFTIRQ
);
1365 /* re-use the page, so don't erase
1366 * buffer_info->page */
1367 skb_put(skb
, length
);
1369 skb_fill_page_desc(skb
, 0,
1370 buffer_info
->page
, 0,
1372 e1000_consume_page(buffer_info
, skb
,
1378 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1379 e1000_rx_checksum(adapter
,
1381 ((u32
)(rx_desc
->errors
) << 24),
1382 le16_to_cpu(rx_desc
->csum
), skb
);
1384 /* probably a little skewed due to removing CRC */
1385 total_rx_bytes
+= skb
->len
;
1388 /* eth type trans needs skb->data to point to something */
1389 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1390 e_err("pskb_may_pull failed.\n");
1395 e1000_receive_skb(adapter
, netdev
, skb
, status
,
1399 rx_desc
->status
= 0;
1401 /* return some buffers to hardware, one at a time is too slow */
1402 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1403 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1407 /* use prefetched values */
1409 buffer_info
= next_buffer
;
1411 rx_ring
->next_to_clean
= i
;
1413 cleaned_count
= e1000_desc_unused(rx_ring
);
1415 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1417 adapter
->total_rx_bytes
+= total_rx_bytes
;
1418 adapter
->total_rx_packets
+= total_rx_packets
;
1419 netdev
->stats
.rx_bytes
+= total_rx_bytes
;
1420 netdev
->stats
.rx_packets
+= total_rx_packets
;
1425 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1426 * @adapter: board private structure
1428 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
)
1430 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1431 struct e1000_buffer
*buffer_info
;
1432 struct e1000_ps_page
*ps_page
;
1433 struct pci_dev
*pdev
= adapter
->pdev
;
1436 /* Free all the Rx ring sk_buffs */
1437 for (i
= 0; i
< rx_ring
->count
; i
++) {
1438 buffer_info
= &rx_ring
->buffer_info
[i
];
1439 if (buffer_info
->dma
) {
1440 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1441 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1442 adapter
->rx_buffer_len
,
1444 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1445 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
,
1448 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1449 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1450 adapter
->rx_ps_bsize0
,
1452 buffer_info
->dma
= 0;
1455 if (buffer_info
->page
) {
1456 put_page(buffer_info
->page
);
1457 buffer_info
->page
= NULL
;
1460 if (buffer_info
->skb
) {
1461 dev_kfree_skb(buffer_info
->skb
);
1462 buffer_info
->skb
= NULL
;
1465 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1466 ps_page
= &buffer_info
->ps_pages
[j
];
1469 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1472 put_page(ps_page
->page
);
1473 ps_page
->page
= NULL
;
1477 /* there also may be some cached data from a chained receive */
1478 if (rx_ring
->rx_skb_top
) {
1479 dev_kfree_skb(rx_ring
->rx_skb_top
);
1480 rx_ring
->rx_skb_top
= NULL
;
1483 /* Zero out the descriptor ring */
1484 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1486 rx_ring
->next_to_clean
= 0;
1487 rx_ring
->next_to_use
= 0;
1488 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1490 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
1491 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
1494 static void e1000e_downshift_workaround(struct work_struct
*work
)
1496 struct e1000_adapter
*adapter
= container_of(work
,
1497 struct e1000_adapter
, downshift_task
);
1499 e1000e_gig_downshift_workaround_ich8lan(&adapter
->hw
);
1503 * e1000_intr_msi - Interrupt Handler
1504 * @irq: interrupt number
1505 * @data: pointer to a network interface device structure
1507 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
1509 struct net_device
*netdev
= data
;
1510 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1511 struct e1000_hw
*hw
= &adapter
->hw
;
1512 u32 icr
= er32(ICR
);
1515 * read ICR disables interrupts using IAM
1518 if (icr
& E1000_ICR_LSC
) {
1519 hw
->mac
.get_link_status
= 1;
1521 * ICH8 workaround-- Call gig speed drop workaround on cable
1522 * disconnect (LSC) before accessing any PHY registers
1524 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1525 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1526 schedule_work(&adapter
->downshift_task
);
1529 * 80003ES2LAN workaround-- For packet buffer work-around on
1530 * link down event; disable receives here in the ISR and reset
1531 * adapter in watchdog
1533 if (netif_carrier_ok(netdev
) &&
1534 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1535 /* disable receives */
1536 u32 rctl
= er32(RCTL
);
1537 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1538 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1540 /* guard against interrupt when we're going down */
1541 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1542 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1545 if (napi_schedule_prep(&adapter
->napi
)) {
1546 adapter
->total_tx_bytes
= 0;
1547 adapter
->total_tx_packets
= 0;
1548 adapter
->total_rx_bytes
= 0;
1549 adapter
->total_rx_packets
= 0;
1550 __napi_schedule(&adapter
->napi
);
1557 * e1000_intr - Interrupt Handler
1558 * @irq: interrupt number
1559 * @data: pointer to a network interface device structure
1561 static irqreturn_t
e1000_intr(int irq
, void *data
)
1563 struct net_device
*netdev
= data
;
1564 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1565 struct e1000_hw
*hw
= &adapter
->hw
;
1566 u32 rctl
, icr
= er32(ICR
);
1568 if (!icr
|| test_bit(__E1000_DOWN
, &adapter
->state
))
1569 return IRQ_NONE
; /* Not our interrupt */
1572 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1573 * not set, then the adapter didn't send an interrupt
1575 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1579 * Interrupt Auto-Mask...upon reading ICR,
1580 * interrupts are masked. No need for the
1584 if (icr
& E1000_ICR_LSC
) {
1585 hw
->mac
.get_link_status
= 1;
1587 * ICH8 workaround-- Call gig speed drop workaround on cable
1588 * disconnect (LSC) before accessing any PHY registers
1590 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1591 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1592 schedule_work(&adapter
->downshift_task
);
1595 * 80003ES2LAN workaround--
1596 * For packet buffer work-around on link down event;
1597 * disable receives here in the ISR and
1598 * reset adapter in watchdog
1600 if (netif_carrier_ok(netdev
) &&
1601 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1602 /* disable receives */
1604 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1605 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1607 /* guard against interrupt when we're going down */
1608 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1609 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1612 if (napi_schedule_prep(&adapter
->napi
)) {
1613 adapter
->total_tx_bytes
= 0;
1614 adapter
->total_tx_packets
= 0;
1615 adapter
->total_rx_bytes
= 0;
1616 adapter
->total_rx_packets
= 0;
1617 __napi_schedule(&adapter
->napi
);
1623 static irqreturn_t
e1000_msix_other(int irq
, void *data
)
1625 struct net_device
*netdev
= data
;
1626 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1627 struct e1000_hw
*hw
= &adapter
->hw
;
1628 u32 icr
= er32(ICR
);
1630 if (!(icr
& E1000_ICR_INT_ASSERTED
)) {
1631 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1632 ew32(IMS
, E1000_IMS_OTHER
);
1636 if (icr
& adapter
->eiac_mask
)
1637 ew32(ICS
, (icr
& adapter
->eiac_mask
));
1639 if (icr
& E1000_ICR_OTHER
) {
1640 if (!(icr
& E1000_ICR_LSC
))
1641 goto no_link_interrupt
;
1642 hw
->mac
.get_link_status
= 1;
1643 /* guard against interrupt when we're going down */
1644 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1645 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1649 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1650 ew32(IMS
, E1000_IMS_LSC
| E1000_IMS_OTHER
);
1656 static irqreturn_t
e1000_intr_msix_tx(int irq
, void *data
)
1658 struct net_device
*netdev
= data
;
1659 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1660 struct e1000_hw
*hw
= &adapter
->hw
;
1661 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1664 adapter
->total_tx_bytes
= 0;
1665 adapter
->total_tx_packets
= 0;
1667 if (!e1000_clean_tx_irq(adapter
))
1668 /* Ring was not completely cleaned, so fire another interrupt */
1669 ew32(ICS
, tx_ring
->ims_val
);
1674 static irqreturn_t
e1000_intr_msix_rx(int irq
, void *data
)
1676 struct net_device
*netdev
= data
;
1677 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1679 /* Write the ITR value calculated at the end of the
1680 * previous interrupt.
1682 if (adapter
->rx_ring
->set_itr
) {
1683 writel(1000000000 / (adapter
->rx_ring
->itr_val
* 256),
1684 adapter
->hw
.hw_addr
+ adapter
->rx_ring
->itr_register
);
1685 adapter
->rx_ring
->set_itr
= 0;
1688 if (napi_schedule_prep(&adapter
->napi
)) {
1689 adapter
->total_rx_bytes
= 0;
1690 adapter
->total_rx_packets
= 0;
1691 __napi_schedule(&adapter
->napi
);
1697 * e1000_configure_msix - Configure MSI-X hardware
1699 * e1000_configure_msix sets up the hardware to properly
1700 * generate MSI-X interrupts.
1702 static void e1000_configure_msix(struct e1000_adapter
*adapter
)
1704 struct e1000_hw
*hw
= &adapter
->hw
;
1705 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1706 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1708 u32 ctrl_ext
, ivar
= 0;
1710 adapter
->eiac_mask
= 0;
1712 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1713 if (hw
->mac
.type
== e1000_82574
) {
1714 u32 rfctl
= er32(RFCTL
);
1715 rfctl
|= E1000_RFCTL_ACK_DIS
;
1719 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1720 /* Configure Rx vector */
1721 rx_ring
->ims_val
= E1000_IMS_RXQ0
;
1722 adapter
->eiac_mask
|= rx_ring
->ims_val
;
1723 if (rx_ring
->itr_val
)
1724 writel(1000000000 / (rx_ring
->itr_val
* 256),
1725 hw
->hw_addr
+ rx_ring
->itr_register
);
1727 writel(1, hw
->hw_addr
+ rx_ring
->itr_register
);
1728 ivar
= E1000_IVAR_INT_ALLOC_VALID
| vector
;
1730 /* Configure Tx vector */
1731 tx_ring
->ims_val
= E1000_IMS_TXQ0
;
1733 if (tx_ring
->itr_val
)
1734 writel(1000000000 / (tx_ring
->itr_val
* 256),
1735 hw
->hw_addr
+ tx_ring
->itr_register
);
1737 writel(1, hw
->hw_addr
+ tx_ring
->itr_register
);
1738 adapter
->eiac_mask
|= tx_ring
->ims_val
;
1739 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 8);
1741 /* set vector for Other Causes, e.g. link changes */
1743 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 16);
1744 if (rx_ring
->itr_val
)
1745 writel(1000000000 / (rx_ring
->itr_val
* 256),
1746 hw
->hw_addr
+ E1000_EITR_82574(vector
));
1748 writel(1, hw
->hw_addr
+ E1000_EITR_82574(vector
));
1750 /* Cause Tx interrupts on every write back */
1755 /* enable MSI-X PBA support */
1756 ctrl_ext
= er32(CTRL_EXT
);
1757 ctrl_ext
|= E1000_CTRL_EXT_PBA_CLR
;
1759 /* Auto-Mask Other interrupts upon ICR read */
1760 #define E1000_EIAC_MASK_82574 0x01F00000
1761 ew32(IAM
, ~E1000_EIAC_MASK_82574
| E1000_IMS_OTHER
);
1762 ctrl_ext
|= E1000_CTRL_EXT_EIAME
;
1763 ew32(CTRL_EXT
, ctrl_ext
);
1767 void e1000e_reset_interrupt_capability(struct e1000_adapter
*adapter
)
1769 if (adapter
->msix_entries
) {
1770 pci_disable_msix(adapter
->pdev
);
1771 kfree(adapter
->msix_entries
);
1772 adapter
->msix_entries
= NULL
;
1773 } else if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1774 pci_disable_msi(adapter
->pdev
);
1775 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
1780 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1782 * Attempt to configure interrupts using the best available
1783 * capabilities of the hardware and kernel.
1785 void e1000e_set_interrupt_capability(struct e1000_adapter
*adapter
)
1790 switch (adapter
->int_mode
) {
1791 case E1000E_INT_MODE_MSIX
:
1792 if (adapter
->flags
& FLAG_HAS_MSIX
) {
1793 adapter
->num_vectors
= 3; /* RxQ0, TxQ0 and other */
1794 adapter
->msix_entries
= kcalloc(adapter
->num_vectors
,
1795 sizeof(struct msix_entry
),
1797 if (adapter
->msix_entries
) {
1798 for (i
= 0; i
< adapter
->num_vectors
; i
++)
1799 adapter
->msix_entries
[i
].entry
= i
;
1801 err
= pci_enable_msix(adapter
->pdev
,
1802 adapter
->msix_entries
,
1803 adapter
->num_vectors
);
1808 /* MSI-X failed, so fall through and try MSI */
1809 e_err("Failed to initialize MSI-X interrupts. "
1810 "Falling back to MSI interrupts.\n");
1811 e1000e_reset_interrupt_capability(adapter
);
1813 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1815 case E1000E_INT_MODE_MSI
:
1816 if (!pci_enable_msi(adapter
->pdev
)) {
1817 adapter
->flags
|= FLAG_MSI_ENABLED
;
1819 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1820 e_err("Failed to initialize MSI interrupts. Falling "
1821 "back to legacy interrupts.\n");
1824 case E1000E_INT_MODE_LEGACY
:
1825 /* Don't do anything; this is the system default */
1829 /* store the number of vectors being used */
1830 adapter
->num_vectors
= 1;
1834 * e1000_request_msix - Initialize MSI-X interrupts
1836 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1839 static int e1000_request_msix(struct e1000_adapter
*adapter
)
1841 struct net_device
*netdev
= adapter
->netdev
;
1842 int err
= 0, vector
= 0;
1844 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1845 sprintf(adapter
->rx_ring
->name
, "%s-rx-0", netdev
->name
);
1847 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1848 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1849 e1000_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
1853 adapter
->rx_ring
->itr_register
= E1000_EITR_82574(vector
);
1854 adapter
->rx_ring
->itr_val
= adapter
->itr
;
1857 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1858 sprintf(adapter
->tx_ring
->name
, "%s-tx-0", netdev
->name
);
1860 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1861 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1862 e1000_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
1866 adapter
->tx_ring
->itr_register
= E1000_EITR_82574(vector
);
1867 adapter
->tx_ring
->itr_val
= adapter
->itr
;
1870 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1871 e1000_msix_other
, 0, netdev
->name
, netdev
);
1875 e1000_configure_msix(adapter
);
1882 * e1000_request_irq - initialize interrupts
1884 * Attempts to configure interrupts using the best available
1885 * capabilities of the hardware and kernel.
1887 static int e1000_request_irq(struct e1000_adapter
*adapter
)
1889 struct net_device
*netdev
= adapter
->netdev
;
1892 if (adapter
->msix_entries
) {
1893 err
= e1000_request_msix(adapter
);
1896 /* fall back to MSI */
1897 e1000e_reset_interrupt_capability(adapter
);
1898 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1899 e1000e_set_interrupt_capability(adapter
);
1901 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1902 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi
, 0,
1903 netdev
->name
, netdev
);
1907 /* fall back to legacy interrupt */
1908 e1000e_reset_interrupt_capability(adapter
);
1909 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1912 err
= request_irq(adapter
->pdev
->irq
, e1000_intr
, IRQF_SHARED
,
1913 netdev
->name
, netdev
);
1915 e_err("Unable to allocate interrupt, Error: %d\n", err
);
1920 static void e1000_free_irq(struct e1000_adapter
*adapter
)
1922 struct net_device
*netdev
= adapter
->netdev
;
1924 if (adapter
->msix_entries
) {
1927 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1930 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1933 /* Other Causes interrupt vector */
1934 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1938 free_irq(adapter
->pdev
->irq
, netdev
);
1942 * e1000_irq_disable - Mask off interrupt generation on the NIC
1944 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
1946 struct e1000_hw
*hw
= &adapter
->hw
;
1949 if (adapter
->msix_entries
)
1950 ew32(EIAC_82574
, 0);
1953 if (adapter
->msix_entries
) {
1955 for (i
= 0; i
< adapter
->num_vectors
; i
++)
1956 synchronize_irq(adapter
->msix_entries
[i
].vector
);
1958 synchronize_irq(adapter
->pdev
->irq
);
1963 * e1000_irq_enable - Enable default interrupt generation settings
1965 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
1967 struct e1000_hw
*hw
= &adapter
->hw
;
1969 if (adapter
->msix_entries
) {
1970 ew32(EIAC_82574
, adapter
->eiac_mask
& E1000_EIAC_MASK_82574
);
1971 ew32(IMS
, adapter
->eiac_mask
| E1000_IMS_OTHER
| E1000_IMS_LSC
);
1973 ew32(IMS
, IMS_ENABLE_MASK
);
1979 * e1000_get_hw_control - get control of the h/w from f/w
1980 * @adapter: address of board private structure
1982 * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1983 * For ASF and Pass Through versions of f/w this means that
1984 * the driver is loaded. For AMT version (only with 82573)
1985 * of the f/w this means that the network i/f is open.
1987 static void e1000_get_hw_control(struct e1000_adapter
*adapter
)
1989 struct e1000_hw
*hw
= &adapter
->hw
;
1993 /* Let firmware know the driver has taken over */
1994 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
1996 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
1997 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
1998 ctrl_ext
= er32(CTRL_EXT
);
1999 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
2004 * e1000_release_hw_control - release control of the h/w to f/w
2005 * @adapter: address of board private structure
2007 * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2008 * For ASF and Pass Through versions of f/w this means that the
2009 * driver is no longer loaded. For AMT version (only with 82573) i
2010 * of the f/w this means that the network i/f is closed.
2013 static void e1000_release_hw_control(struct e1000_adapter
*adapter
)
2015 struct e1000_hw
*hw
= &adapter
->hw
;
2019 /* Let firmware taken over control of h/w */
2020 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2022 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
2023 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2024 ctrl_ext
= er32(CTRL_EXT
);
2025 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
2030 * @e1000_alloc_ring - allocate memory for a ring structure
2032 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
2033 struct e1000_ring
*ring
)
2035 struct pci_dev
*pdev
= adapter
->pdev
;
2037 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
2046 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
2047 * @adapter: board private structure
2049 * Return 0 on success, negative on failure
2051 int e1000e_setup_tx_resources(struct e1000_adapter
*adapter
)
2053 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2054 int err
= -ENOMEM
, size
;
2056 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2057 tx_ring
->buffer_info
= vmalloc(size
);
2058 if (!tx_ring
->buffer_info
)
2060 memset(tx_ring
->buffer_info
, 0, size
);
2062 /* round up to nearest 4K */
2063 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2064 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
2066 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
2070 tx_ring
->next_to_use
= 0;
2071 tx_ring
->next_to_clean
= 0;
2075 vfree(tx_ring
->buffer_info
);
2076 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2081 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
2082 * @adapter: board private structure
2084 * Returns 0 on success, negative on failure
2086 int e1000e_setup_rx_resources(struct e1000_adapter
*adapter
)
2088 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2089 struct e1000_buffer
*buffer_info
;
2090 int i
, size
, desc_len
, err
= -ENOMEM
;
2092 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2093 rx_ring
->buffer_info
= vmalloc(size
);
2094 if (!rx_ring
->buffer_info
)
2096 memset(rx_ring
->buffer_info
, 0, size
);
2098 for (i
= 0; i
< rx_ring
->count
; i
++) {
2099 buffer_info
= &rx_ring
->buffer_info
[i
];
2100 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
2101 sizeof(struct e1000_ps_page
),
2103 if (!buffer_info
->ps_pages
)
2107 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
2109 /* Round up to nearest 4K */
2110 rx_ring
->size
= rx_ring
->count
* desc_len
;
2111 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
2113 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
2117 rx_ring
->next_to_clean
= 0;
2118 rx_ring
->next_to_use
= 0;
2119 rx_ring
->rx_skb_top
= NULL
;
2124 for (i
= 0; i
< rx_ring
->count
; i
++) {
2125 buffer_info
= &rx_ring
->buffer_info
[i
];
2126 kfree(buffer_info
->ps_pages
);
2129 vfree(rx_ring
->buffer_info
);
2130 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2135 * e1000_clean_tx_ring - Free Tx Buffers
2136 * @adapter: board private structure
2138 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
)
2140 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2141 struct e1000_buffer
*buffer_info
;
2145 for (i
= 0; i
< tx_ring
->count
; i
++) {
2146 buffer_info
= &tx_ring
->buffer_info
[i
];
2147 e1000_put_txbuf(adapter
, buffer_info
);
2150 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2151 memset(tx_ring
->buffer_info
, 0, size
);
2153 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2155 tx_ring
->next_to_use
= 0;
2156 tx_ring
->next_to_clean
= 0;
2158 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
2159 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
2163 * e1000e_free_tx_resources - Free Tx Resources per Queue
2164 * @adapter: board private structure
2166 * Free all transmit software resources
2168 void e1000e_free_tx_resources(struct e1000_adapter
*adapter
)
2170 struct pci_dev
*pdev
= adapter
->pdev
;
2171 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2173 e1000_clean_tx_ring(adapter
);
2175 vfree(tx_ring
->buffer_info
);
2176 tx_ring
->buffer_info
= NULL
;
2178 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
2180 tx_ring
->desc
= NULL
;
2184 * e1000e_free_rx_resources - Free Rx Resources
2185 * @adapter: board private structure
2187 * Free all receive software resources
2190 void e1000e_free_rx_resources(struct e1000_adapter
*adapter
)
2192 struct pci_dev
*pdev
= adapter
->pdev
;
2193 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2196 e1000_clean_rx_ring(adapter
);
2198 for (i
= 0; i
< rx_ring
->count
; i
++) {
2199 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
2202 vfree(rx_ring
->buffer_info
);
2203 rx_ring
->buffer_info
= NULL
;
2205 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
2207 rx_ring
->desc
= NULL
;
2211 * e1000_update_itr - update the dynamic ITR value based on statistics
2212 * @adapter: pointer to adapter
2213 * @itr_setting: current adapter->itr
2214 * @packets: the number of packets during this measurement interval
2215 * @bytes: the number of bytes during this measurement interval
2217 * Stores a new ITR value based on packets and byte
2218 * counts during the last interrupt. The advantage of per interrupt
2219 * computation is faster updates and more accurate ITR for the current
2220 * traffic pattern. Constants in this function were computed
2221 * based on theoretical maximum wire speed and thresholds were set based
2222 * on testing data as well as attempting to minimize response time
2223 * while increasing bulk throughput. This functionality is controlled
2224 * by the InterruptThrottleRate module parameter.
2226 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
2227 u16 itr_setting
, int packets
,
2230 unsigned int retval
= itr_setting
;
2233 goto update_itr_done
;
2235 switch (itr_setting
) {
2236 case lowest_latency
:
2237 /* handle TSO and jumbo frames */
2238 if (bytes
/packets
> 8000)
2239 retval
= bulk_latency
;
2240 else if ((packets
< 5) && (bytes
> 512)) {
2241 retval
= low_latency
;
2244 case low_latency
: /* 50 usec aka 20000 ints/s */
2245 if (bytes
> 10000) {
2246 /* this if handles the TSO accounting */
2247 if (bytes
/packets
> 8000) {
2248 retval
= bulk_latency
;
2249 } else if ((packets
< 10) || ((bytes
/packets
) > 1200)) {
2250 retval
= bulk_latency
;
2251 } else if ((packets
> 35)) {
2252 retval
= lowest_latency
;
2254 } else if (bytes
/packets
> 2000) {
2255 retval
= bulk_latency
;
2256 } else if (packets
<= 2 && bytes
< 512) {
2257 retval
= lowest_latency
;
2260 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2261 if (bytes
> 25000) {
2263 retval
= low_latency
;
2265 } else if (bytes
< 6000) {
2266 retval
= low_latency
;
2275 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2277 struct e1000_hw
*hw
= &adapter
->hw
;
2279 u32 new_itr
= adapter
->itr
;
2281 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2282 if (adapter
->link_speed
!= SPEED_1000
) {
2288 adapter
->tx_itr
= e1000_update_itr(adapter
,
2290 adapter
->total_tx_packets
,
2291 adapter
->total_tx_bytes
);
2292 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2293 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
2294 adapter
->tx_itr
= low_latency
;
2296 adapter
->rx_itr
= e1000_update_itr(adapter
,
2298 adapter
->total_rx_packets
,
2299 adapter
->total_rx_bytes
);
2300 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2301 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2302 adapter
->rx_itr
= low_latency
;
2304 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2306 switch (current_itr
) {
2307 /* counts and packets in update_itr are dependent on these numbers */
2308 case lowest_latency
:
2312 new_itr
= 20000; /* aka hwitr = ~200 */
2322 if (new_itr
!= adapter
->itr
) {
2324 * this attempts to bias the interrupt rate towards Bulk
2325 * by adding intermediate steps when interrupt rate is
2328 new_itr
= new_itr
> adapter
->itr
?
2329 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2331 adapter
->itr
= new_itr
;
2332 adapter
->rx_ring
->itr_val
= new_itr
;
2333 if (adapter
->msix_entries
)
2334 adapter
->rx_ring
->set_itr
= 1;
2336 ew32(ITR
, 1000000000 / (new_itr
* 256));
2341 * e1000_alloc_queues - Allocate memory for all rings
2342 * @adapter: board private structure to initialize
2344 static int __devinit
e1000_alloc_queues(struct e1000_adapter
*adapter
)
2346 adapter
->tx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
2347 if (!adapter
->tx_ring
)
2350 adapter
->rx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
2351 if (!adapter
->rx_ring
)
2356 e_err("Unable to allocate memory for queues\n");
2357 kfree(adapter
->rx_ring
);
2358 kfree(adapter
->tx_ring
);
2363 * e1000_clean - NAPI Rx polling callback
2364 * @napi: struct associated with this polling callback
2365 * @budget: amount of packets driver is allowed to process this poll
2367 static int e1000_clean(struct napi_struct
*napi
, int budget
)
2369 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
2370 struct e1000_hw
*hw
= &adapter
->hw
;
2371 struct net_device
*poll_dev
= adapter
->netdev
;
2372 int tx_cleaned
= 1, work_done
= 0;
2374 adapter
= netdev_priv(poll_dev
);
2376 if (adapter
->msix_entries
&&
2377 !(adapter
->rx_ring
->ims_val
& adapter
->tx_ring
->ims_val
))
2380 tx_cleaned
= e1000_clean_tx_irq(adapter
);
2383 adapter
->clean_rx(adapter
, &work_done
, budget
);
2388 /* If budget not fully consumed, exit the polling mode */
2389 if (work_done
< budget
) {
2390 if (adapter
->itr_setting
& 3)
2391 e1000_set_itr(adapter
);
2392 napi_complete(napi
);
2393 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
2394 if (adapter
->msix_entries
)
2395 ew32(IMS
, adapter
->rx_ring
->ims_val
);
2397 e1000_irq_enable(adapter
);
2404 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
2406 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2407 struct e1000_hw
*hw
= &adapter
->hw
;
2410 /* don't update vlan cookie if already programmed */
2411 if ((adapter
->hw
.mng_cookie
.status
&
2412 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2413 (vid
== adapter
->mng_vlan_id
))
2416 /* add VID to filter table */
2417 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2418 index
= (vid
>> 5) & 0x7F;
2419 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2420 vfta
|= (1 << (vid
& 0x1F));
2421 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2425 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
2427 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2428 struct e1000_hw
*hw
= &adapter
->hw
;
2431 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2432 e1000_irq_disable(adapter
);
2433 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
2435 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2436 e1000_irq_enable(adapter
);
2438 if ((adapter
->hw
.mng_cookie
.status
&
2439 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2440 (vid
== adapter
->mng_vlan_id
)) {
2441 /* release control to f/w */
2442 e1000_release_hw_control(adapter
);
2446 /* remove VID from filter table */
2447 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2448 index
= (vid
>> 5) & 0x7F;
2449 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2450 vfta
&= ~(1 << (vid
& 0x1F));
2451 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2455 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
2457 struct net_device
*netdev
= adapter
->netdev
;
2458 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
2459 u16 old_vid
= adapter
->mng_vlan_id
;
2461 if (!adapter
->vlgrp
)
2464 if (!vlan_group_get_device(adapter
->vlgrp
, vid
)) {
2465 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2466 if (adapter
->hw
.mng_cookie
.status
&
2467 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
2468 e1000_vlan_rx_add_vid(netdev
, vid
);
2469 adapter
->mng_vlan_id
= vid
;
2472 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) &&
2474 !vlan_group_get_device(adapter
->vlgrp
, old_vid
))
2475 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
2477 adapter
->mng_vlan_id
= vid
;
2482 static void e1000_vlan_rx_register(struct net_device
*netdev
,
2483 struct vlan_group
*grp
)
2485 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2486 struct e1000_hw
*hw
= &adapter
->hw
;
2489 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2490 e1000_irq_disable(adapter
);
2491 adapter
->vlgrp
= grp
;
2494 /* enable VLAN tag insert/strip */
2496 ctrl
|= E1000_CTRL_VME
;
2499 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2500 /* enable VLAN receive filtering */
2502 rctl
&= ~E1000_RCTL_CFIEN
;
2504 e1000_update_mng_vlan(adapter
);
2507 /* disable VLAN tag insert/strip */
2509 ctrl
&= ~E1000_CTRL_VME
;
2512 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2513 if (adapter
->mng_vlan_id
!=
2514 (u16
)E1000_MNG_VLAN_NONE
) {
2515 e1000_vlan_rx_kill_vid(netdev
,
2516 adapter
->mng_vlan_id
);
2517 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2522 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2523 e1000_irq_enable(adapter
);
2526 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
2530 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
2532 if (!adapter
->vlgrp
)
2535 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
2536 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
2538 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
2542 static void e1000_init_manageability_pt(struct e1000_adapter
*adapter
)
2544 struct e1000_hw
*hw
= &adapter
->hw
;
2545 u32 manc
, manc2h
, mdef
, i
, j
;
2547 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
2553 * enable receiving management packets to the host. this will probably
2554 * generate destination unreachable messages from the host OS, but
2555 * the packets will be handled on SMBUS
2557 manc
|= E1000_MANC_EN_MNG2HOST
;
2558 manc2h
= er32(MANC2H
);
2560 switch (hw
->mac
.type
) {
2562 manc2h
|= (E1000_MANC2H_PORT_623
| E1000_MANC2H_PORT_664
);
2567 * Check if IPMI pass-through decision filter already exists;
2570 for (i
= 0, j
= 0; i
< 8; i
++) {
2571 mdef
= er32(MDEF(i
));
2573 /* Ignore filters with anything other than IPMI ports */
2574 if (mdef
& ~(E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2577 /* Enable this decision filter in MANC2H */
2584 if (j
== (E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2587 /* Create new decision filter in an empty filter */
2588 for (i
= 0, j
= 0; i
< 8; i
++)
2589 if (er32(MDEF(i
)) == 0) {
2590 ew32(MDEF(i
), (E1000_MDEF_PORT_623
|
2591 E1000_MDEF_PORT_664
));
2598 e_warn("Unable to create IPMI pass-through filter\n");
2602 ew32(MANC2H
, manc2h
);
2607 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
2608 * @adapter: board private structure
2610 * Configure the Tx unit of the MAC after a reset.
2612 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
2614 struct e1000_hw
*hw
= &adapter
->hw
;
2615 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2617 u32 tdlen
, tctl
, tipg
, tarc
;
2620 /* Setup the HW Tx Head and Tail descriptor pointers */
2621 tdba
= tx_ring
->dma
;
2622 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2623 ew32(TDBAL
, (tdba
& DMA_BIT_MASK(32)));
2624 ew32(TDBAH
, (tdba
>> 32));
2628 tx_ring
->head
= E1000_TDH
;
2629 tx_ring
->tail
= E1000_TDT
;
2631 /* Set the default values for the Tx Inter Packet Gap timer */
2632 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
; /* 8 */
2633 ipgr1
= DEFAULT_82543_TIPG_IPGR1
; /* 8 */
2634 ipgr2
= DEFAULT_82543_TIPG_IPGR2
; /* 6 */
2636 if (adapter
->flags
& FLAG_TIPG_MEDIUM_FOR_80003ESLAN
)
2637 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
; /* 7 */
2639 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
2640 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
2643 /* Set the Tx Interrupt Delay register */
2644 ew32(TIDV
, adapter
->tx_int_delay
);
2645 /* Tx irq moderation */
2646 ew32(TADV
, adapter
->tx_abs_int_delay
);
2648 /* Program the Transmit Control Register */
2650 tctl
&= ~E1000_TCTL_CT
;
2651 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
2652 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
2654 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
2655 tarc
= er32(TARC(0));
2657 * set the speed mode bit, we'll clear it if we're not at
2658 * gigabit link later
2660 #define SPEED_MODE_BIT (1 << 21)
2661 tarc
|= SPEED_MODE_BIT
;
2662 ew32(TARC(0), tarc
);
2665 /* errata: program both queues to unweighted RR */
2666 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
2667 tarc
= er32(TARC(0));
2669 ew32(TARC(0), tarc
);
2670 tarc
= er32(TARC(1));
2672 ew32(TARC(1), tarc
);
2675 /* Setup Transmit Descriptor Settings for eop descriptor */
2676 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
2678 /* only set IDE if we are delaying interrupts using the timers */
2679 if (adapter
->tx_int_delay
)
2680 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
2682 /* enable Report Status bit */
2683 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
2687 e1000e_config_collision_dist(hw
);
2691 * e1000_setup_rctl - configure the receive control registers
2692 * @adapter: Board private structure
2694 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2695 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2696 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
2698 struct e1000_hw
*hw
= &adapter
->hw
;
2703 /* Program MC offset vector base */
2705 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
2706 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
2707 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
2708 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
2710 /* Do not Store bad packets */
2711 rctl
&= ~E1000_RCTL_SBP
;
2713 /* Enable Long Packet receive */
2714 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
2715 rctl
&= ~E1000_RCTL_LPE
;
2717 rctl
|= E1000_RCTL_LPE
;
2719 /* Some systems expect that the CRC is included in SMBUS traffic. The
2720 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2721 * host memory when this is enabled
2723 if (adapter
->flags2
& FLAG2_CRC_STRIPPING
)
2724 rctl
|= E1000_RCTL_SECRC
;
2726 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
2727 if ((hw
->phy
.type
== e1000_phy_82577
) && (rctl
& E1000_RCTL_LPE
)) {
2730 e1e_rphy(hw
, PHY_REG(770, 26), &phy_data
);
2732 phy_data
|= (1 << 2);
2733 e1e_wphy(hw
, PHY_REG(770, 26), phy_data
);
2735 e1e_rphy(hw
, 22, &phy_data
);
2737 phy_data
|= (1 << 14);
2738 e1e_wphy(hw
, 0x10, 0x2823);
2739 e1e_wphy(hw
, 0x11, 0x0003);
2740 e1e_wphy(hw
, 22, phy_data
);
2743 /* Workaround Si errata on 82579 - configure jumbo frame flow */
2744 if (hw
->mac
.type
== e1000_pch2lan
) {
2747 if (rctl
& E1000_RCTL_LPE
)
2748 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, true);
2750 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, false);
2753 /* Setup buffer sizes */
2754 rctl
&= ~E1000_RCTL_SZ_4096
;
2755 rctl
|= E1000_RCTL_BSEX
;
2756 switch (adapter
->rx_buffer_len
) {
2759 rctl
|= E1000_RCTL_SZ_2048
;
2760 rctl
&= ~E1000_RCTL_BSEX
;
2763 rctl
|= E1000_RCTL_SZ_4096
;
2766 rctl
|= E1000_RCTL_SZ_8192
;
2769 rctl
|= E1000_RCTL_SZ_16384
;
2774 * 82571 and greater support packet-split where the protocol
2775 * header is placed in skb->data and the packet data is
2776 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2777 * In the case of a non-split, skb->data is linearly filled,
2778 * followed by the page buffers. Therefore, skb->data is
2779 * sized to hold the largest protocol header.
2781 * allocations using alloc_page take too long for regular MTU
2782 * so only enable packet split for jumbo frames
2784 * Using pages when the page size is greater than 16k wastes
2785 * a lot of memory, since we allocate 3 pages at all times
2788 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
2789 if (!(adapter
->flags
& FLAG_HAS_ERT
) && (pages
<= 3) &&
2790 (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
2791 adapter
->rx_ps_pages
= pages
;
2793 adapter
->rx_ps_pages
= 0;
2795 if (adapter
->rx_ps_pages
) {
2796 /* Configure extra packet-split registers */
2797 rfctl
= er32(RFCTL
);
2798 rfctl
|= E1000_RFCTL_EXTEN
;
2800 * disable packet split support for IPv6 extension headers,
2801 * because some malformed IPv6 headers can hang the Rx
2803 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
2804 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
2808 /* Enable Packet split descriptors */
2809 rctl
|= E1000_RCTL_DTYP_PS
;
2811 psrctl
|= adapter
->rx_ps_bsize0
>>
2812 E1000_PSRCTL_BSIZE0_SHIFT
;
2814 switch (adapter
->rx_ps_pages
) {
2816 psrctl
|= PAGE_SIZE
<<
2817 E1000_PSRCTL_BSIZE3_SHIFT
;
2819 psrctl
|= PAGE_SIZE
<<
2820 E1000_PSRCTL_BSIZE2_SHIFT
;
2822 psrctl
|= PAGE_SIZE
>>
2823 E1000_PSRCTL_BSIZE1_SHIFT
;
2827 ew32(PSRCTL
, psrctl
);
2831 /* just started the receive unit, no need to restart */
2832 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
2836 * e1000_configure_rx - Configure Receive Unit after Reset
2837 * @adapter: board private structure
2839 * Configure the Rx unit of the MAC after a reset.
2841 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
2843 struct e1000_hw
*hw
= &adapter
->hw
;
2844 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2846 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
2848 if (adapter
->rx_ps_pages
) {
2849 /* this is a 32 byte descriptor */
2850 rdlen
= rx_ring
->count
*
2851 sizeof(union e1000_rx_desc_packet_split
);
2852 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
2853 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
2854 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2855 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2856 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
2857 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
2859 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2860 adapter
->clean_rx
= e1000_clean_rx_irq
;
2861 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
2864 /* disable receives while setting up the descriptors */
2866 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2870 /* set the Receive Delay Timer Register */
2871 ew32(RDTR
, adapter
->rx_int_delay
);
2873 /* irq moderation */
2874 ew32(RADV
, adapter
->rx_abs_int_delay
);
2875 if (adapter
->itr_setting
!= 0)
2876 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
2878 ctrl_ext
= er32(CTRL_EXT
);
2879 /* Auto-Mask interrupts upon ICR access */
2880 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
2881 ew32(IAM
, 0xffffffff);
2882 ew32(CTRL_EXT
, ctrl_ext
);
2886 * Setup the HW Rx Head and Tail Descriptor Pointers and
2887 * the Base and Length of the Rx Descriptor Ring
2889 rdba
= rx_ring
->dma
;
2890 ew32(RDBAL
, (rdba
& DMA_BIT_MASK(32)));
2891 ew32(RDBAH
, (rdba
>> 32));
2895 rx_ring
->head
= E1000_RDH
;
2896 rx_ring
->tail
= E1000_RDT
;
2898 /* Enable Receive Checksum Offload for TCP and UDP */
2899 rxcsum
= er32(RXCSUM
);
2900 if (adapter
->flags
& FLAG_RX_CSUM_ENABLED
) {
2901 rxcsum
|= E1000_RXCSUM_TUOFL
;
2904 * IPv4 payload checksum for UDP fragments must be
2905 * used in conjunction with packet-split.
2907 if (adapter
->rx_ps_pages
)
2908 rxcsum
|= E1000_RXCSUM_IPPCSE
;
2910 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2911 /* no need to clear IPPCSE as it defaults to 0 */
2913 ew32(RXCSUM
, rxcsum
);
2916 * Enable early receives on supported devices, only takes effect when
2917 * packet size is equal or larger than the specified value (in 8 byte
2918 * units), e.g. using jumbo frames when setting to E1000_ERT_2048
2920 if (adapter
->flags
& FLAG_HAS_ERT
) {
2921 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
2922 u32 rxdctl
= er32(RXDCTL(0));
2923 ew32(RXDCTL(0), rxdctl
| 0x3);
2924 ew32(ERT
, E1000_ERT_2048
| (1 << 13));
2926 * With jumbo frames and early-receive enabled,
2927 * excessive C-state transition latencies result in
2928 * dropped transactions.
2930 pm_qos_update_request(
2931 &adapter
->netdev
->pm_qos_req
, 55);
2933 pm_qos_update_request(
2934 &adapter
->netdev
->pm_qos_req
,
2935 PM_QOS_DEFAULT_VALUE
);
2939 /* Enable Receives */
2944 * e1000_update_mc_addr_list - Update Multicast addresses
2945 * @hw: pointer to the HW structure
2946 * @mc_addr_list: array of multicast addresses to program
2947 * @mc_addr_count: number of multicast addresses to program
2949 * Updates the Multicast Table Array.
2950 * The caller must have a packed mc_addr_list of multicast addresses.
2952 static void e1000_update_mc_addr_list(struct e1000_hw
*hw
, u8
*mc_addr_list
,
2955 hw
->mac
.ops
.update_mc_addr_list(hw
, mc_addr_list
, mc_addr_count
);
2959 * e1000_set_multi - Multicast and Promiscuous mode set
2960 * @netdev: network interface device structure
2962 * The set_multi entry point is called whenever the multicast address
2963 * list or the network interface flags are updated. This routine is
2964 * responsible for configuring the hardware for proper multicast,
2965 * promiscuous mode, and all-multi behavior.
2967 static void e1000_set_multi(struct net_device
*netdev
)
2969 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2970 struct e1000_hw
*hw
= &adapter
->hw
;
2971 struct netdev_hw_addr
*ha
;
2976 /* Check for Promiscuous and All Multicast modes */
2980 if (netdev
->flags
& IFF_PROMISC
) {
2981 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2982 rctl
&= ~E1000_RCTL_VFE
;
2984 if (netdev
->flags
& IFF_ALLMULTI
) {
2985 rctl
|= E1000_RCTL_MPE
;
2986 rctl
&= ~E1000_RCTL_UPE
;
2988 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2990 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
2991 rctl
|= E1000_RCTL_VFE
;
2996 if (!netdev_mc_empty(netdev
)) {
2997 mta_list
= kmalloc(netdev_mc_count(netdev
) * 6, GFP_ATOMIC
);
3001 /* prepare a packed array of only addresses. */
3003 netdev_for_each_mc_addr(ha
, netdev
)
3004 memcpy(mta_list
+ (i
++ * ETH_ALEN
), ha
->addr
, ETH_ALEN
);
3006 e1000_update_mc_addr_list(hw
, mta_list
, i
);
3010 * if we're called from probe, we might not have
3011 * anything to do here, so clear out the list
3013 e1000_update_mc_addr_list(hw
, NULL
, 0);
3018 * e1000_configure - configure the hardware for Rx and Tx
3019 * @adapter: private board structure
3021 static void e1000_configure(struct e1000_adapter
*adapter
)
3023 e1000_set_multi(adapter
->netdev
);
3025 e1000_restore_vlan(adapter
);
3026 e1000_init_manageability_pt(adapter
);
3028 e1000_configure_tx(adapter
);
3029 e1000_setup_rctl(adapter
);
3030 e1000_configure_rx(adapter
);
3031 adapter
->alloc_rx_buf(adapter
, e1000_desc_unused(adapter
->rx_ring
));
3035 * e1000e_power_up_phy - restore link in case the phy was powered down
3036 * @adapter: address of board private structure
3038 * The phy may be powered down to save power and turn off link when the
3039 * driver is unloaded and wake on lan is not enabled (among others)
3040 * *** this routine MUST be followed by a call to e1000e_reset ***
3042 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
3044 if (adapter
->hw
.phy
.ops
.power_up
)
3045 adapter
->hw
.phy
.ops
.power_up(&adapter
->hw
);
3047 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
3051 * e1000_power_down_phy - Power down the PHY
3053 * Power down the PHY so no link is implied when interface is down.
3054 * The PHY cannot be powered down if management or WoL is active.
3056 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
3058 /* WoL is enabled */
3062 if (adapter
->hw
.phy
.ops
.power_down
)
3063 adapter
->hw
.phy
.ops
.power_down(&adapter
->hw
);
3067 * e1000e_reset - bring the hardware into a known good state
3069 * This function boots the hardware and enables some settings that
3070 * require a configuration cycle of the hardware - those cannot be
3071 * set/changed during runtime. After reset the device needs to be
3072 * properly configured for Rx, Tx etc.
3074 void e1000e_reset(struct e1000_adapter
*adapter
)
3076 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3077 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
3078 struct e1000_hw
*hw
= &adapter
->hw
;
3079 u32 tx_space
, min_tx_space
, min_rx_space
;
3080 u32 pba
= adapter
->pba
;
3083 /* reset Packet Buffer Allocation to default */
3086 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3088 * To maintain wire speed transmits, the Tx FIFO should be
3089 * large enough to accommodate two full transmit packets,
3090 * rounded up to the next 1KB and expressed in KB. Likewise,
3091 * the Rx FIFO should be large enough to accommodate at least
3092 * one full receive packet and is similarly rounded up and
3096 /* upper 16 bits has Tx packet buffer allocation size in KB */
3097 tx_space
= pba
>> 16;
3098 /* lower 16 bits has Rx packet buffer allocation size in KB */
3101 * the Tx fifo also stores 16 bytes of information about the tx
3102 * but don't include ethernet FCS because hardware appends it
3104 min_tx_space
= (adapter
->max_frame_size
+
3105 sizeof(struct e1000_tx_desc
) -
3107 min_tx_space
= ALIGN(min_tx_space
, 1024);
3108 min_tx_space
>>= 10;
3109 /* software strips receive CRC, so leave room for it */
3110 min_rx_space
= adapter
->max_frame_size
;
3111 min_rx_space
= ALIGN(min_rx_space
, 1024);
3112 min_rx_space
>>= 10;
3115 * If current Tx allocation is less than the min Tx FIFO size,
3116 * and the min Tx FIFO size is less than the current Rx FIFO
3117 * allocation, take space away from current Rx allocation
3119 if ((tx_space
< min_tx_space
) &&
3120 ((min_tx_space
- tx_space
) < pba
)) {
3121 pba
-= min_tx_space
- tx_space
;
3124 * if short on Rx space, Rx wins and must trump tx
3125 * adjustment or use Early Receive if available
3127 if ((pba
< min_rx_space
) &&
3128 (!(adapter
->flags
& FLAG_HAS_ERT
)))
3129 /* ERT enabled in e1000_configure_rx */
3138 * flow control settings
3140 * The high water mark must be low enough to fit one full frame
3141 * (or the size used for early receive) above it in the Rx FIFO.
3142 * Set it to the lower of:
3143 * - 90% of the Rx FIFO size, and
3144 * - the full Rx FIFO size minus the early receive size (for parts
3145 * with ERT support assuming ERT set to E1000_ERT_2048), or
3146 * - the full Rx FIFO size minus one full frame
3148 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
3149 fc
->pause_time
= 0xFFFF;
3151 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
3153 fc
->current_mode
= fc
->requested_mode
;
3155 switch (hw
->mac
.type
) {
3157 if ((adapter
->flags
& FLAG_HAS_ERT
) &&
3158 (adapter
->netdev
->mtu
> ETH_DATA_LEN
))
3159 hwm
= min(((pba
<< 10) * 9 / 10),
3160 ((pba
<< 10) - (E1000_ERT_2048
<< 3)));
3162 hwm
= min(((pba
<< 10) * 9 / 10),
3163 ((pba
<< 10) - adapter
->max_frame_size
));
3165 fc
->high_water
= hwm
& E1000_FCRTH_RTH
; /* 8-byte granularity */
3166 fc
->low_water
= fc
->high_water
- 8;
3170 * Workaround PCH LOM adapter hangs with certain network
3171 * loads. If hangs persist, try disabling Tx flow control.
3173 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3174 fc
->high_water
= 0x3500;
3175 fc
->low_water
= 0x1500;
3177 fc
->high_water
= 0x5000;
3178 fc
->low_water
= 0x3000;
3180 fc
->refresh_time
= 0x1000;
3183 fc
->high_water
= 0x05C20;
3184 fc
->low_water
= 0x05048;
3185 fc
->pause_time
= 0x0650;
3186 fc
->refresh_time
= 0x0400;
3190 /* Allow time for pending master requests to run */
3191 mac
->ops
.reset_hw(hw
);
3194 * For parts with AMT enabled, let the firmware know
3195 * that the network interface is in control
3197 if (adapter
->flags
& FLAG_HAS_AMT
)
3198 e1000_get_hw_control(adapter
);
3202 if (mac
->ops
.init_hw(hw
))
3203 e_err("Hardware Error\n");
3205 e1000_update_mng_vlan(adapter
);
3207 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3208 ew32(VET
, ETH_P_8021Q
);
3210 e1000e_reset_adaptive(hw
);
3211 e1000_get_phy_info(hw
);
3213 if ((adapter
->flags
& FLAG_HAS_SMART_POWER_DOWN
) &&
3214 !(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
3217 * speed up time to link by disabling smart power down, ignore
3218 * the return value of this function because there is nothing
3219 * different we would do if it failed
3221 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
3222 phy_data
&= ~IGP02E1000_PM_SPD
;
3223 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
3227 int e1000e_up(struct e1000_adapter
*adapter
)
3229 struct e1000_hw
*hw
= &adapter
->hw
;
3231 /* hardware has been reset, we need to reload some things */
3232 e1000_configure(adapter
);
3234 clear_bit(__E1000_DOWN
, &adapter
->state
);
3236 napi_enable(&adapter
->napi
);
3237 if (adapter
->msix_entries
)
3238 e1000_configure_msix(adapter
);
3239 e1000_irq_enable(adapter
);
3241 netif_wake_queue(adapter
->netdev
);
3243 /* fire a link change interrupt to start the watchdog */
3244 if (adapter
->msix_entries
)
3245 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
3247 ew32(ICS
, E1000_ICS_LSC
);
3252 void e1000e_down(struct e1000_adapter
*adapter
)
3254 struct net_device
*netdev
= adapter
->netdev
;
3255 struct e1000_hw
*hw
= &adapter
->hw
;
3259 * signal that we're down so the interrupt handler does not
3260 * reschedule our watchdog timer
3262 set_bit(__E1000_DOWN
, &adapter
->state
);
3264 /* disable receives in the hardware */
3266 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3267 /* flush and sleep below */
3269 netif_stop_queue(netdev
);
3271 /* disable transmits in the hardware */
3273 tctl
&= ~E1000_TCTL_EN
;
3275 /* flush both disables and wait for them to finish */
3279 napi_disable(&adapter
->napi
);
3280 e1000_irq_disable(adapter
);
3282 del_timer_sync(&adapter
->watchdog_timer
);
3283 del_timer_sync(&adapter
->phy_info_timer
);
3285 netif_carrier_off(netdev
);
3286 adapter
->link_speed
= 0;
3287 adapter
->link_duplex
= 0;
3289 if (!pci_channel_offline(adapter
->pdev
))
3290 e1000e_reset(adapter
);
3291 e1000_clean_tx_ring(adapter
);
3292 e1000_clean_rx_ring(adapter
);
3295 * TODO: for power management, we could drop the link and
3296 * pci_disable_device here.
3300 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
3303 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
3305 e1000e_down(adapter
);
3307 clear_bit(__E1000_RESETTING
, &adapter
->state
);
3311 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
3312 * @adapter: board private structure to initialize
3314 * e1000_sw_init initializes the Adapter private data structure.
3315 * Fields are initialized based on PCI device information and
3316 * OS network device settings (MTU size).
3318 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
3320 struct net_device
*netdev
= adapter
->netdev
;
3322 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
3323 adapter
->rx_ps_bsize0
= 128;
3324 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3325 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
3327 e1000e_set_interrupt_capability(adapter
);
3329 if (e1000_alloc_queues(adapter
))
3332 /* Explicitly disable IRQ since the NIC can be in any state. */
3333 e1000_irq_disable(adapter
);
3335 set_bit(__E1000_DOWN
, &adapter
->state
);
3340 * e1000_intr_msi_test - Interrupt Handler
3341 * @irq: interrupt number
3342 * @data: pointer to a network interface device structure
3344 static irqreturn_t
e1000_intr_msi_test(int irq
, void *data
)
3346 struct net_device
*netdev
= data
;
3347 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3348 struct e1000_hw
*hw
= &adapter
->hw
;
3349 u32 icr
= er32(ICR
);
3351 e_dbg("icr is %08X\n", icr
);
3352 if (icr
& E1000_ICR_RXSEQ
) {
3353 adapter
->flags
&= ~FLAG_MSI_TEST_FAILED
;
3361 * e1000_test_msi_interrupt - Returns 0 for successful test
3362 * @adapter: board private struct
3364 * code flow taken from tg3.c
3366 static int e1000_test_msi_interrupt(struct e1000_adapter
*adapter
)
3368 struct net_device
*netdev
= adapter
->netdev
;
3369 struct e1000_hw
*hw
= &adapter
->hw
;
3372 /* poll_enable hasn't been called yet, so don't need disable */
3373 /* clear any pending events */
3376 /* free the real vector and request a test handler */
3377 e1000_free_irq(adapter
);
3378 e1000e_reset_interrupt_capability(adapter
);
3380 /* Assume that the test fails, if it succeeds then the test
3381 * MSI irq handler will unset this flag */
3382 adapter
->flags
|= FLAG_MSI_TEST_FAILED
;
3384 err
= pci_enable_msi(adapter
->pdev
);
3386 goto msi_test_failed
;
3388 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi_test
, 0,
3389 netdev
->name
, netdev
);
3391 pci_disable_msi(adapter
->pdev
);
3392 goto msi_test_failed
;
3397 e1000_irq_enable(adapter
);
3399 /* fire an unusual interrupt on the test handler */
3400 ew32(ICS
, E1000_ICS_RXSEQ
);
3404 e1000_irq_disable(adapter
);
3408 if (adapter
->flags
& FLAG_MSI_TEST_FAILED
) {
3409 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
3411 e_info("MSI interrupt test failed!\n");
3414 free_irq(adapter
->pdev
->irq
, netdev
);
3415 pci_disable_msi(adapter
->pdev
);
3418 goto msi_test_failed
;
3420 /* okay so the test worked, restore settings */
3421 e_dbg("MSI interrupt test succeeded!\n");
3423 e1000e_set_interrupt_capability(adapter
);
3424 e1000_request_irq(adapter
);
3429 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3430 * @adapter: board private struct
3432 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3434 static int e1000_test_msi(struct e1000_adapter
*adapter
)
3439 if (!(adapter
->flags
& FLAG_MSI_ENABLED
))
3442 /* disable SERR in case the MSI write causes a master abort */
3443 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3444 if (pci_cmd
& PCI_COMMAND_SERR
)
3445 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
,
3446 pci_cmd
& ~PCI_COMMAND_SERR
);
3448 err
= e1000_test_msi_interrupt(adapter
);
3450 /* re-enable SERR */
3451 if (pci_cmd
& PCI_COMMAND_SERR
) {
3452 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3453 pci_cmd
|= PCI_COMMAND_SERR
;
3454 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
, pci_cmd
);
3461 /* EIO means MSI test failed */
3465 /* back to INTx mode */
3466 e_warn("MSI interrupt test failed, using legacy interrupt.\n");
3468 e1000_free_irq(adapter
);
3470 err
= e1000_request_irq(adapter
);
3476 * e1000_open - Called when a network interface is made active
3477 * @netdev: network interface device structure
3479 * Returns 0 on success, negative value on failure
3481 * The open entry point is called when a network interface is made
3482 * active by the system (IFF_UP). At this point all resources needed
3483 * for transmit and receive operations are allocated, the interrupt
3484 * handler is registered with the OS, the watchdog timer is started,
3485 * and the stack is notified that the interface is ready.
3487 static int e1000_open(struct net_device
*netdev
)
3489 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3490 struct e1000_hw
*hw
= &adapter
->hw
;
3491 struct pci_dev
*pdev
= adapter
->pdev
;
3494 /* disallow open during test */
3495 if (test_bit(__E1000_TESTING
, &adapter
->state
))
3498 pm_runtime_get_sync(&pdev
->dev
);
3500 netif_carrier_off(netdev
);
3502 /* allocate transmit descriptors */
3503 err
= e1000e_setup_tx_resources(adapter
);
3507 /* allocate receive descriptors */
3508 err
= e1000e_setup_rx_resources(adapter
);
3513 * If AMT is enabled, let the firmware know that the network
3514 * interface is now open and reset the part to a known state.
3516 if (adapter
->flags
& FLAG_HAS_AMT
) {
3517 e1000_get_hw_control(adapter
);
3518 e1000e_reset(adapter
);
3521 e1000e_power_up_phy(adapter
);
3523 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
3524 if ((adapter
->hw
.mng_cookie
.status
&
3525 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
3526 e1000_update_mng_vlan(adapter
);
3528 /* DMA latency requirement to workaround early-receive/jumbo issue */
3529 if (adapter
->flags
& FLAG_HAS_ERT
)
3530 pm_qos_add_request(&adapter
->netdev
->pm_qos_req
,
3531 PM_QOS_CPU_DMA_LATENCY
,
3532 PM_QOS_DEFAULT_VALUE
);
3535 * before we allocate an interrupt, we must be ready to handle it.
3536 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3537 * as soon as we call pci_request_irq, so we have to setup our
3538 * clean_rx handler before we do so.
3540 e1000_configure(adapter
);
3542 err
= e1000_request_irq(adapter
);
3547 * Work around PCIe errata with MSI interrupts causing some chipsets to
3548 * ignore e1000e MSI messages, which means we need to test our MSI
3551 if (adapter
->int_mode
!= E1000E_INT_MODE_LEGACY
) {
3552 err
= e1000_test_msi(adapter
);
3554 e_err("Interrupt allocation failed\n");
3559 /* From here on the code is the same as e1000e_up() */
3560 clear_bit(__E1000_DOWN
, &adapter
->state
);
3562 napi_enable(&adapter
->napi
);
3564 e1000_irq_enable(adapter
);
3566 netif_start_queue(netdev
);
3568 adapter
->idle_check
= true;
3569 pm_runtime_put(&pdev
->dev
);
3571 /* fire a link status change interrupt to start the watchdog */
3572 if (adapter
->msix_entries
)
3573 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
3575 ew32(ICS
, E1000_ICS_LSC
);
3580 e1000_release_hw_control(adapter
);
3581 e1000_power_down_phy(adapter
);
3582 e1000e_free_rx_resources(adapter
);
3584 e1000e_free_tx_resources(adapter
);
3586 e1000e_reset(adapter
);
3587 pm_runtime_put_sync(&pdev
->dev
);
3593 * e1000_close - Disables a network interface
3594 * @netdev: network interface device structure
3596 * Returns 0, this is not allowed to fail
3598 * The close entry point is called when an interface is de-activated
3599 * by the OS. The hardware is still under the drivers control, but
3600 * needs to be disabled. A global MAC reset is issued to stop the
3601 * hardware, and all transmit and receive resources are freed.
3603 static int e1000_close(struct net_device
*netdev
)
3605 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3606 struct pci_dev
*pdev
= adapter
->pdev
;
3608 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
3610 pm_runtime_get_sync(&pdev
->dev
);
3612 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
3613 e1000e_down(adapter
);
3614 e1000_free_irq(adapter
);
3616 e1000_power_down_phy(adapter
);
3618 e1000e_free_tx_resources(adapter
);
3619 e1000e_free_rx_resources(adapter
);
3622 * kill manageability vlan ID if supported, but not if a vlan with
3623 * the same ID is registered on the host OS (let 8021q kill it)
3625 if ((adapter
->hw
.mng_cookie
.status
&
3626 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
3628 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
)))
3629 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
3632 * If AMT is enabled, let the firmware know that the network
3633 * interface is now closed
3635 if (adapter
->flags
& FLAG_HAS_AMT
)
3636 e1000_release_hw_control(adapter
);
3638 if (adapter
->flags
& FLAG_HAS_ERT
)
3639 pm_qos_remove_request(&adapter
->netdev
->pm_qos_req
);
3641 pm_runtime_put_sync(&pdev
->dev
);
3646 * e1000_set_mac - Change the Ethernet Address of the NIC
3647 * @netdev: network interface device structure
3648 * @p: pointer to an address structure
3650 * Returns 0 on success, negative on failure
3652 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
3654 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3655 struct sockaddr
*addr
= p
;
3657 if (!is_valid_ether_addr(addr
->sa_data
))
3658 return -EADDRNOTAVAIL
;
3660 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
3661 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
3663 e1000e_rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
3665 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
3666 /* activate the work around */
3667 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
3670 * Hold a copy of the LAA in RAR[14] This is done so that
3671 * between the time RAR[0] gets clobbered and the time it
3672 * gets fixed (in e1000_watchdog), the actual LAA is in one
3673 * of the RARs and no incoming packets directed to this port
3674 * are dropped. Eventually the LAA will be in RAR[0] and
3677 e1000e_rar_set(&adapter
->hw
,
3678 adapter
->hw
.mac
.addr
,
3679 adapter
->hw
.mac
.rar_entry_count
- 1);
3686 * e1000e_update_phy_task - work thread to update phy
3687 * @work: pointer to our work struct
3689 * this worker thread exists because we must acquire a
3690 * semaphore to read the phy, which we could msleep while
3691 * waiting for it, and we can't msleep in a timer.
3693 static void e1000e_update_phy_task(struct work_struct
*work
)
3695 struct e1000_adapter
*adapter
= container_of(work
,
3696 struct e1000_adapter
, update_phy_task
);
3697 e1000_get_phy_info(&adapter
->hw
);
3701 * Need to wait a few seconds after link up to get diagnostic information from
3704 static void e1000_update_phy_info(unsigned long data
)
3706 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3707 schedule_work(&adapter
->update_phy_task
);
3711 * e1000e_update_phy_stats - Update the PHY statistics counters
3712 * @adapter: board private structure
3714 static void e1000e_update_phy_stats(struct e1000_adapter
*adapter
)
3716 struct e1000_hw
*hw
= &adapter
->hw
;
3720 ret_val
= hw
->phy
.ops
.acquire(hw
);
3726 #define HV_PHY_STATS_PAGE 778
3728 * A page set is expensive so check if already on desired page.
3729 * If not, set to the page with the PHY status registers.
3731 ret_val
= e1000e_read_phy_reg_mdic(hw
, IGP01E1000_PHY_PAGE_SELECT
,
3735 if (phy_data
!= (HV_PHY_STATS_PAGE
<< IGP_PAGE_SHIFT
)) {
3736 ret_val
= e1000e_write_phy_reg_mdic(hw
,
3737 IGP01E1000_PHY_PAGE_SELECT
,
3738 (HV_PHY_STATS_PAGE
<<
3744 /* Read/clear the upper 16-bit registers and read/accumulate lower */
3746 /* Single Collision Count */
3747 e1000e_read_phy_reg_mdic(hw
, HV_SCC_UPPER
& MAX_PHY_REG_ADDRESS
,
3749 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3750 HV_SCC_LOWER
& MAX_PHY_REG_ADDRESS
,
3753 adapter
->stats
.scc
+= phy_data
;
3755 /* Excessive Collision Count */
3756 e1000e_read_phy_reg_mdic(hw
, HV_ECOL_UPPER
& MAX_PHY_REG_ADDRESS
,
3758 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3759 HV_ECOL_LOWER
& MAX_PHY_REG_ADDRESS
,
3762 adapter
->stats
.ecol
+= phy_data
;
3764 /* Multiple Collision Count */
3765 e1000e_read_phy_reg_mdic(hw
, HV_MCC_UPPER
& MAX_PHY_REG_ADDRESS
,
3767 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3768 HV_MCC_LOWER
& MAX_PHY_REG_ADDRESS
,
3771 adapter
->stats
.mcc
+= phy_data
;
3773 /* Late Collision Count */
3774 e1000e_read_phy_reg_mdic(hw
, HV_LATECOL_UPPER
& MAX_PHY_REG_ADDRESS
,
3776 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3778 MAX_PHY_REG_ADDRESS
,
3781 adapter
->stats
.latecol
+= phy_data
;
3783 /* Collision Count - also used for adaptive IFS */
3784 e1000e_read_phy_reg_mdic(hw
, HV_COLC_UPPER
& MAX_PHY_REG_ADDRESS
,
3786 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3787 HV_COLC_LOWER
& MAX_PHY_REG_ADDRESS
,
3790 hw
->mac
.collision_delta
= phy_data
;
3793 e1000e_read_phy_reg_mdic(hw
, HV_DC_UPPER
& MAX_PHY_REG_ADDRESS
,
3795 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3796 HV_DC_LOWER
& MAX_PHY_REG_ADDRESS
,
3799 adapter
->stats
.dc
+= phy_data
;
3801 /* Transmit with no CRS */
3802 e1000e_read_phy_reg_mdic(hw
, HV_TNCRS_UPPER
& MAX_PHY_REG_ADDRESS
,
3804 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3805 HV_TNCRS_LOWER
& MAX_PHY_REG_ADDRESS
,
3808 adapter
->stats
.tncrs
+= phy_data
;
3811 hw
->phy
.ops
.release(hw
);
3815 * e1000e_update_stats - Update the board statistics counters
3816 * @adapter: board private structure
3818 void e1000e_update_stats(struct e1000_adapter
*adapter
)
3820 struct net_device
*netdev
= adapter
->netdev
;
3821 struct e1000_hw
*hw
= &adapter
->hw
;
3822 struct pci_dev
*pdev
= adapter
->pdev
;
3825 * Prevent stats update while adapter is being reset, or if the pci
3826 * connection is down.
3828 if (adapter
->link_speed
== 0)
3830 if (pci_channel_offline(pdev
))
3833 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
3834 adapter
->stats
.gprc
+= er32(GPRC
);
3835 adapter
->stats
.gorc
+= er32(GORCL
);
3836 er32(GORCH
); /* Clear gorc */
3837 adapter
->stats
.bprc
+= er32(BPRC
);
3838 adapter
->stats
.mprc
+= er32(MPRC
);
3839 adapter
->stats
.roc
+= er32(ROC
);
3841 adapter
->stats
.mpc
+= er32(MPC
);
3843 /* Half-duplex statistics */
3844 if (adapter
->link_duplex
== HALF_DUPLEX
) {
3845 if (adapter
->flags2
& FLAG2_HAS_PHY_STATS
) {
3846 e1000e_update_phy_stats(adapter
);
3848 adapter
->stats
.scc
+= er32(SCC
);
3849 adapter
->stats
.ecol
+= er32(ECOL
);
3850 adapter
->stats
.mcc
+= er32(MCC
);
3851 adapter
->stats
.latecol
+= er32(LATECOL
);
3852 adapter
->stats
.dc
+= er32(DC
);
3854 hw
->mac
.collision_delta
= er32(COLC
);
3856 if ((hw
->mac
.type
!= e1000_82574
) &&
3857 (hw
->mac
.type
!= e1000_82583
))
3858 adapter
->stats
.tncrs
+= er32(TNCRS
);
3860 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
3863 adapter
->stats
.xonrxc
+= er32(XONRXC
);
3864 adapter
->stats
.xontxc
+= er32(XONTXC
);
3865 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
3866 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
3867 adapter
->stats
.gptc
+= er32(GPTC
);
3868 adapter
->stats
.gotc
+= er32(GOTCL
);
3869 er32(GOTCH
); /* Clear gotc */
3870 adapter
->stats
.rnbc
+= er32(RNBC
);
3871 adapter
->stats
.ruc
+= er32(RUC
);
3873 adapter
->stats
.mptc
+= er32(MPTC
);
3874 adapter
->stats
.bptc
+= er32(BPTC
);
3876 /* used for adaptive IFS */
3878 hw
->mac
.tx_packet_delta
= er32(TPT
);
3879 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
3881 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
3882 adapter
->stats
.rxerrc
+= er32(RXERRC
);
3883 adapter
->stats
.cexterr
+= er32(CEXTERR
);
3884 adapter
->stats
.tsctc
+= er32(TSCTC
);
3885 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
3887 /* Fill out the OS statistics structure */
3888 netdev
->stats
.multicast
= adapter
->stats
.mprc
;
3889 netdev
->stats
.collisions
= adapter
->stats
.colc
;
3894 * RLEC on some newer hardware can be incorrect so build
3895 * our own version based on RUC and ROC
3897 netdev
->stats
.rx_errors
= adapter
->stats
.rxerrc
+
3898 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3899 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3900 adapter
->stats
.cexterr
;
3901 netdev
->stats
.rx_length_errors
= adapter
->stats
.ruc
+
3903 netdev
->stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3904 netdev
->stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3905 netdev
->stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3908 netdev
->stats
.tx_errors
= adapter
->stats
.ecol
+
3909 adapter
->stats
.latecol
;
3910 netdev
->stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3911 netdev
->stats
.tx_window_errors
= adapter
->stats
.latecol
;
3912 netdev
->stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3914 /* Tx Dropped needs to be maintained elsewhere */
3916 /* Management Stats */
3917 adapter
->stats
.mgptc
+= er32(MGTPTC
);
3918 adapter
->stats
.mgprc
+= er32(MGTPRC
);
3919 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
3923 * e1000_phy_read_status - Update the PHY register status snapshot
3924 * @adapter: board private structure
3926 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
3928 struct e1000_hw
*hw
= &adapter
->hw
;
3929 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
3932 if ((er32(STATUS
) & E1000_STATUS_LU
) &&
3933 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
3934 ret_val
= e1e_rphy(hw
, PHY_CONTROL
, &phy
->bmcr
);
3935 ret_val
|= e1e_rphy(hw
, PHY_STATUS
, &phy
->bmsr
);
3936 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_ADV
, &phy
->advertise
);
3937 ret_val
|= e1e_rphy(hw
, PHY_LP_ABILITY
, &phy
->lpa
);
3938 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_EXP
, &phy
->expansion
);
3939 ret_val
|= e1e_rphy(hw
, PHY_1000T_CTRL
, &phy
->ctrl1000
);
3940 ret_val
|= e1e_rphy(hw
, PHY_1000T_STATUS
, &phy
->stat1000
);
3941 ret_val
|= e1e_rphy(hw
, PHY_EXT_STATUS
, &phy
->estatus
);
3943 e_warn("Error reading PHY register\n");
3946 * Do not read PHY registers if link is not up
3947 * Set values to typical power-on defaults
3949 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
3950 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
3951 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
3953 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
3954 ADVERTISE_ALL
| ADVERTISE_CSMA
);
3956 phy
->expansion
= EXPANSION_ENABLENPAGE
;
3957 phy
->ctrl1000
= ADVERTISE_1000FULL
;
3959 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
3963 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
3965 struct e1000_hw
*hw
= &adapter
->hw
;
3966 u32 ctrl
= er32(CTRL
);
3968 /* Link status message must follow this format for user tools */
3969 printk(KERN_INFO
"e1000e: %s NIC Link is Up %d Mbps %s, "
3970 "Flow Control: %s\n",
3971 adapter
->netdev
->name
,
3972 adapter
->link_speed
,
3973 (adapter
->link_duplex
== FULL_DUPLEX
) ?
3974 "Full Duplex" : "Half Duplex",
3975 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
)) ?
3977 ((ctrl
& E1000_CTRL_RFCE
) ? "RX" :
3978 ((ctrl
& E1000_CTRL_TFCE
) ? "TX" : "None" )));
3981 static bool e1000e_has_link(struct e1000_adapter
*adapter
)
3983 struct e1000_hw
*hw
= &adapter
->hw
;
3984 bool link_active
= 0;
3988 * get_link_status is set on LSC (link status) interrupt or
3989 * Rx sequence error interrupt. get_link_status will stay
3990 * false until the check_for_link establishes link
3991 * for copper adapters ONLY
3993 switch (hw
->phy
.media_type
) {
3994 case e1000_media_type_copper
:
3995 if (hw
->mac
.get_link_status
) {
3996 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3997 link_active
= !hw
->mac
.get_link_status
;
4002 case e1000_media_type_fiber
:
4003 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4004 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
4006 case e1000_media_type_internal_serdes
:
4007 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4008 link_active
= adapter
->hw
.mac
.serdes_has_link
;
4011 case e1000_media_type_unknown
:
4015 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
4016 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
4017 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
4018 e_info("Gigabit has been disabled, downgrading speed\n");
4024 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
4026 /* make sure the receive unit is started */
4027 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
4028 (adapter
->flags
& FLAG_RX_RESTART_NOW
)) {
4029 struct e1000_hw
*hw
= &adapter
->hw
;
4030 u32 rctl
= er32(RCTL
);
4031 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
4032 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
4037 * e1000_watchdog - Timer Call-back
4038 * @data: pointer to adapter cast into an unsigned long
4040 static void e1000_watchdog(unsigned long data
)
4042 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
4044 /* Do the rest outside of interrupt context */
4045 schedule_work(&adapter
->watchdog_task
);
4047 /* TODO: make this use queue_delayed_work() */
4050 static void e1000_watchdog_task(struct work_struct
*work
)
4052 struct e1000_adapter
*adapter
= container_of(work
,
4053 struct e1000_adapter
, watchdog_task
);
4054 struct net_device
*netdev
= adapter
->netdev
;
4055 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
4056 struct e1000_phy_info
*phy
= &adapter
->hw
.phy
;
4057 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4058 struct e1000_hw
*hw
= &adapter
->hw
;
4062 link
= e1000e_has_link(adapter
);
4063 if ((netif_carrier_ok(netdev
)) && link
) {
4064 /* Cancel scheduled suspend requests. */
4065 pm_runtime_resume(netdev
->dev
.parent
);
4067 e1000e_enable_receives(adapter
);
4071 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
4072 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
4073 e1000_update_mng_vlan(adapter
);
4076 if (!netif_carrier_ok(netdev
)) {
4079 /* Cancel scheduled suspend requests. */
4080 pm_runtime_resume(netdev
->dev
.parent
);
4082 /* update snapshot of PHY registers on LSC */
4083 e1000_phy_read_status(adapter
);
4084 mac
->ops
.get_link_up_info(&adapter
->hw
,
4085 &adapter
->link_speed
,
4086 &adapter
->link_duplex
);
4087 e1000_print_link_info(adapter
);
4089 * On supported PHYs, check for duplex mismatch only
4090 * if link has autonegotiated at 10/100 half
4092 if ((hw
->phy
.type
== e1000_phy_igp_3
||
4093 hw
->phy
.type
== e1000_phy_bm
) &&
4094 (hw
->mac
.autoneg
== true) &&
4095 (adapter
->link_speed
== SPEED_10
||
4096 adapter
->link_speed
== SPEED_100
) &&
4097 (adapter
->link_duplex
== HALF_DUPLEX
)) {
4100 e1e_rphy(hw
, PHY_AUTONEG_EXP
, &autoneg_exp
);
4102 if (!(autoneg_exp
& NWAY_ER_LP_NWAY_CAPS
))
4103 e_info("Autonegotiated half duplex but"
4104 " link partner cannot autoneg. "
4105 " Try forcing full duplex if "
4106 "link gets many collisions.\n");
4109 /* adjust timeout factor according to speed/duplex */
4110 adapter
->tx_timeout_factor
= 1;
4111 switch (adapter
->link_speed
) {
4114 adapter
->tx_timeout_factor
= 16;
4118 adapter
->tx_timeout_factor
= 10;
4123 * workaround: re-program speed mode bit after
4126 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
4129 tarc0
= er32(TARC(0));
4130 tarc0
&= ~SPEED_MODE_BIT
;
4131 ew32(TARC(0), tarc0
);
4135 * disable TSO for pcie and 10/100 speeds, to avoid
4136 * some hardware issues
4138 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
4139 switch (adapter
->link_speed
) {
4142 e_info("10/100 speed: disabling TSO\n");
4143 netdev
->features
&= ~NETIF_F_TSO
;
4144 netdev
->features
&= ~NETIF_F_TSO6
;
4147 netdev
->features
|= NETIF_F_TSO
;
4148 netdev
->features
|= NETIF_F_TSO6
;
4157 * enable transmits in the hardware, need to do this
4158 * after setting TARC(0)
4161 tctl
|= E1000_TCTL_EN
;
4165 * Perform any post-link-up configuration before
4166 * reporting link up.
4168 if (phy
->ops
.cfg_on_link_up
)
4169 phy
->ops
.cfg_on_link_up(hw
);
4171 netif_carrier_on(netdev
);
4173 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4174 mod_timer(&adapter
->phy_info_timer
,
4175 round_jiffies(jiffies
+ 2 * HZ
));
4178 if (netif_carrier_ok(netdev
)) {
4179 adapter
->link_speed
= 0;
4180 adapter
->link_duplex
= 0;
4181 /* Link status message must follow this format */
4182 printk(KERN_INFO
"e1000e: %s NIC Link is Down\n",
4183 adapter
->netdev
->name
);
4184 netif_carrier_off(netdev
);
4185 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4186 mod_timer(&adapter
->phy_info_timer
,
4187 round_jiffies(jiffies
+ 2 * HZ
));
4189 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
4190 schedule_work(&adapter
->reset_task
);
4192 pm_schedule_suspend(netdev
->dev
.parent
,
4198 e1000e_update_stats(adapter
);
4200 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
4201 adapter
->tpt_old
= adapter
->stats
.tpt
;
4202 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
4203 adapter
->colc_old
= adapter
->stats
.colc
;
4205 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
4206 adapter
->gorc_old
= adapter
->stats
.gorc
;
4207 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
4208 adapter
->gotc_old
= adapter
->stats
.gotc
;
4210 e1000e_update_adaptive(&adapter
->hw
);
4212 if (!netif_carrier_ok(netdev
)) {
4213 tx_pending
= (e1000_desc_unused(tx_ring
) + 1 <
4217 * We've lost link, so the controller stops DMA,
4218 * but we've got queued Tx work that's never going
4219 * to get done, so reset controller to flush Tx.
4220 * (Do the reset outside of interrupt context).
4222 adapter
->tx_timeout_count
++;
4223 schedule_work(&adapter
->reset_task
);
4224 /* return immediately since reset is imminent */
4229 /* Simple mode for Interrupt Throttle Rate (ITR) */
4230 if (adapter
->itr_setting
== 4) {
4232 * Symmetric Tx/Rx gets a reduced ITR=2000;
4233 * Total asymmetrical Tx or Rx gets ITR=8000;
4234 * everyone else is between 2000-8000.
4236 u32 goc
= (adapter
->gotc
+ adapter
->gorc
) / 10000;
4237 u32 dif
= (adapter
->gotc
> adapter
->gorc
?
4238 adapter
->gotc
- adapter
->gorc
:
4239 adapter
->gorc
- adapter
->gotc
) / 10000;
4240 u32 itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
4242 ew32(ITR
, 1000000000 / (itr
* 256));
4245 /* Cause software interrupt to ensure Rx ring is cleaned */
4246 if (adapter
->msix_entries
)
4247 ew32(ICS
, adapter
->rx_ring
->ims_val
);
4249 ew32(ICS
, E1000_ICS_RXDMT0
);
4251 /* Force detection of hung controller every watchdog period */
4252 adapter
->detect_tx_hung
= 1;
4255 * With 82571 controllers, LAA may be overwritten due to controller
4256 * reset from the other port. Set the appropriate LAA in RAR[0]
4258 if (e1000e_get_laa_state_82571(hw
))
4259 e1000e_rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
4261 /* Reset the timer */
4262 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4263 mod_timer(&adapter
->watchdog_timer
,
4264 round_jiffies(jiffies
+ 2 * HZ
));
4267 #define E1000_TX_FLAGS_CSUM 0x00000001
4268 #define E1000_TX_FLAGS_VLAN 0x00000002
4269 #define E1000_TX_FLAGS_TSO 0x00000004
4270 #define E1000_TX_FLAGS_IPV4 0x00000008
4271 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
4272 #define E1000_TX_FLAGS_VLAN_SHIFT 16
4274 static int e1000_tso(struct e1000_adapter
*adapter
,
4275 struct sk_buff
*skb
)
4277 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4278 struct e1000_context_desc
*context_desc
;
4279 struct e1000_buffer
*buffer_info
;
4282 u16 ipcse
= 0, tucse
, mss
;
4283 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
4286 if (!skb_is_gso(skb
))
4289 if (skb_header_cloned(skb
)) {
4290 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
4295 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
4296 mss
= skb_shinfo(skb
)->gso_size
;
4297 if (skb
->protocol
== htons(ETH_P_IP
)) {
4298 struct iphdr
*iph
= ip_hdr(skb
);
4301 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
, iph
->daddr
,
4303 cmd_length
= E1000_TXD_CMD_IP
;
4304 ipcse
= skb_transport_offset(skb
) - 1;
4305 } else if (skb_is_gso_v6(skb
)) {
4306 ipv6_hdr(skb
)->payload_len
= 0;
4307 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
4308 &ipv6_hdr(skb
)->daddr
,
4312 ipcss
= skb_network_offset(skb
);
4313 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
4314 tucss
= skb_transport_offset(skb
);
4315 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
4318 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
4319 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
4321 i
= tx_ring
->next_to_use
;
4322 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
4323 buffer_info
= &tx_ring
->buffer_info
[i
];
4325 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
4326 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
4327 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
4328 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
4329 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
4330 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
4331 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
4332 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
4333 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
4335 buffer_info
->time_stamp
= jiffies
;
4336 buffer_info
->next_to_watch
= i
;
4339 if (i
== tx_ring
->count
)
4341 tx_ring
->next_to_use
= i
;
4346 static bool e1000_tx_csum(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
4348 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4349 struct e1000_context_desc
*context_desc
;
4350 struct e1000_buffer
*buffer_info
;
4353 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
4356 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
4359 if (skb
->protocol
== cpu_to_be16(ETH_P_8021Q
))
4360 protocol
= vlan_eth_hdr(skb
)->h_vlan_encapsulated_proto
;
4362 protocol
= skb
->protocol
;
4365 case cpu_to_be16(ETH_P_IP
):
4366 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
4367 cmd_len
|= E1000_TXD_CMD_TCP
;
4369 case cpu_to_be16(ETH_P_IPV6
):
4370 /* XXX not handling all IPV6 headers */
4371 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
4372 cmd_len
|= E1000_TXD_CMD_TCP
;
4375 if (unlikely(net_ratelimit()))
4376 e_warn("checksum_partial proto=%x!\n",
4377 be16_to_cpu(protocol
));
4381 css
= skb_transport_offset(skb
);
4383 i
= tx_ring
->next_to_use
;
4384 buffer_info
= &tx_ring
->buffer_info
[i
];
4385 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
4387 context_desc
->lower_setup
.ip_config
= 0;
4388 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
4389 context_desc
->upper_setup
.tcp_fields
.tucso
=
4390 css
+ skb
->csum_offset
;
4391 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
4392 context_desc
->tcp_seg_setup
.data
= 0;
4393 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
4395 buffer_info
->time_stamp
= jiffies
;
4396 buffer_info
->next_to_watch
= i
;
4399 if (i
== tx_ring
->count
)
4401 tx_ring
->next_to_use
= i
;
4406 #define E1000_MAX_PER_TXD 8192
4407 #define E1000_MAX_TXD_PWR 12
4409 static int e1000_tx_map(struct e1000_adapter
*adapter
,
4410 struct sk_buff
*skb
, unsigned int first
,
4411 unsigned int max_per_txd
, unsigned int nr_frags
,
4414 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4415 struct pci_dev
*pdev
= adapter
->pdev
;
4416 struct e1000_buffer
*buffer_info
;
4417 unsigned int len
= skb_headlen(skb
);
4418 unsigned int offset
= 0, size
, count
= 0, i
;
4419 unsigned int f
, bytecount
, segs
;
4421 i
= tx_ring
->next_to_use
;
4424 buffer_info
= &tx_ring
->buffer_info
[i
];
4425 size
= min(len
, max_per_txd
);
4427 buffer_info
->length
= size
;
4428 buffer_info
->time_stamp
= jiffies
;
4429 buffer_info
->next_to_watch
= i
;
4430 buffer_info
->dma
= dma_map_single(&pdev
->dev
,
4432 size
, DMA_TO_DEVICE
);
4433 buffer_info
->mapped_as_page
= false;
4434 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
4443 if (i
== tx_ring
->count
)
4448 for (f
= 0; f
< nr_frags
; f
++) {
4449 struct skb_frag_struct
*frag
;
4451 frag
= &skb_shinfo(skb
)->frags
[f
];
4453 offset
= frag
->page_offset
;
4457 if (i
== tx_ring
->count
)
4460 buffer_info
= &tx_ring
->buffer_info
[i
];
4461 size
= min(len
, max_per_txd
);
4463 buffer_info
->length
= size
;
4464 buffer_info
->time_stamp
= jiffies
;
4465 buffer_info
->next_to_watch
= i
;
4466 buffer_info
->dma
= dma_map_page(&pdev
->dev
, frag
->page
,
4469 buffer_info
->mapped_as_page
= true;
4470 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
4479 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
4480 /* multiply data chunks by size of headers */
4481 bytecount
= ((segs
- 1) * skb_headlen(skb
)) + skb
->len
;
4483 tx_ring
->buffer_info
[i
].skb
= skb
;
4484 tx_ring
->buffer_info
[i
].segs
= segs
;
4485 tx_ring
->buffer_info
[i
].bytecount
= bytecount
;
4486 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
4491 dev_err(&pdev
->dev
, "TX DMA map failed\n");
4492 buffer_info
->dma
= 0;
4498 i
+= tx_ring
->count
;
4500 buffer_info
= &tx_ring
->buffer_info
[i
];
4501 e1000_put_txbuf(adapter
, buffer_info
);;
4507 static void e1000_tx_queue(struct e1000_adapter
*adapter
,
4508 int tx_flags
, int count
)
4510 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4511 struct e1000_tx_desc
*tx_desc
= NULL
;
4512 struct e1000_buffer
*buffer_info
;
4513 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
4516 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
4517 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
4519 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
4521 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
4522 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
4525 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
4526 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
4527 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
4530 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
4531 txd_lower
|= E1000_TXD_CMD_VLE
;
4532 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
4535 i
= tx_ring
->next_to_use
;
4538 buffer_info
= &tx_ring
->buffer_info
[i
];
4539 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
4540 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4541 tx_desc
->lower
.data
=
4542 cpu_to_le32(txd_lower
| buffer_info
->length
);
4543 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
4546 if (i
== tx_ring
->count
)
4550 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
4553 * Force memory writes to complete before letting h/w
4554 * know there are new descriptors to fetch. (Only
4555 * applicable for weak-ordered memory model archs,
4560 tx_ring
->next_to_use
= i
;
4561 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
4563 * we need this if more than one processor can write to our tail
4564 * at a time, it synchronizes IO on IA64/Altix systems
4569 #define MINIMUM_DHCP_PACKET_SIZE 282
4570 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
4571 struct sk_buff
*skb
)
4573 struct e1000_hw
*hw
= &adapter
->hw
;
4576 if (vlan_tx_tag_present(skb
)) {
4577 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
4578 (adapter
->hw
.mng_cookie
.status
&
4579 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
4583 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
4586 if (((struct ethhdr
*) skb
->data
)->h_proto
!= htons(ETH_P_IP
))
4590 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+14);
4593 if (ip
->protocol
!= IPPROTO_UDP
)
4596 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
4597 if (ntohs(udp
->dest
) != 67)
4600 offset
= (u8
*)udp
+ 8 - skb
->data
;
4601 length
= skb
->len
- offset
;
4602 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
4608 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4610 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4612 netif_stop_queue(netdev
);
4614 * Herbert's original patch had:
4615 * smp_mb__after_netif_stop_queue();
4616 * but since that doesn't exist yet, just open code it.
4621 * We need to check again in a case another CPU has just
4622 * made room available.
4624 if (e1000_desc_unused(adapter
->tx_ring
) < size
)
4628 netif_start_queue(netdev
);
4629 ++adapter
->restart_queue
;
4633 static int e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4635 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4637 if (e1000_desc_unused(adapter
->tx_ring
) >= size
)
4639 return __e1000_maybe_stop_tx(netdev
, size
);
4642 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
4643 static netdev_tx_t
e1000_xmit_frame(struct sk_buff
*skb
,
4644 struct net_device
*netdev
)
4646 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4647 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4649 unsigned int max_per_txd
= E1000_MAX_PER_TXD
;
4650 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
4651 unsigned int tx_flags
= 0;
4652 unsigned int len
= skb_headlen(skb
);
4653 unsigned int nr_frags
;
4659 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
4660 dev_kfree_skb_any(skb
);
4661 return NETDEV_TX_OK
;
4664 if (skb
->len
<= 0) {
4665 dev_kfree_skb_any(skb
);
4666 return NETDEV_TX_OK
;
4669 mss
= skb_shinfo(skb
)->gso_size
;
4671 * The controller does a simple calculation to
4672 * make sure there is enough room in the FIFO before
4673 * initiating the DMA for each buffer. The calc is:
4674 * 4 = ceil(buffer len/mss). To make sure we don't
4675 * overrun the FIFO, adjust the max buffer len if mss
4680 max_per_txd
= min(mss
<< 2, max_per_txd
);
4681 max_txd_pwr
= fls(max_per_txd
) - 1;
4684 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
4685 * points to just header, pull a few bytes of payload from
4686 * frags into skb->data
4688 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
4690 * we do this workaround for ES2LAN, but it is un-necessary,
4691 * avoiding it could save a lot of cycles
4693 if (skb
->data_len
&& (hdr_len
== len
)) {
4694 unsigned int pull_size
;
4696 pull_size
= min((unsigned int)4, skb
->data_len
);
4697 if (!__pskb_pull_tail(skb
, pull_size
)) {
4698 e_err("__pskb_pull_tail failed.\n");
4699 dev_kfree_skb_any(skb
);
4700 return NETDEV_TX_OK
;
4702 len
= skb_headlen(skb
);
4706 /* reserve a descriptor for the offload context */
4707 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
4711 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
4713 nr_frags
= skb_shinfo(skb
)->nr_frags
;
4714 for (f
= 0; f
< nr_frags
; f
++)
4715 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
4718 if (adapter
->hw
.mac
.tx_pkt_filtering
)
4719 e1000_transfer_dhcp_info(adapter
, skb
);
4722 * need: count + 2 desc gap to keep tail from touching
4723 * head, otherwise try next time
4725 if (e1000_maybe_stop_tx(netdev
, count
+ 2))
4726 return NETDEV_TX_BUSY
;
4728 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
4729 tx_flags
|= E1000_TX_FLAGS_VLAN
;
4730 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
4733 first
= tx_ring
->next_to_use
;
4735 tso
= e1000_tso(adapter
, skb
);
4737 dev_kfree_skb_any(skb
);
4738 return NETDEV_TX_OK
;
4742 tx_flags
|= E1000_TX_FLAGS_TSO
;
4743 else if (e1000_tx_csum(adapter
, skb
))
4744 tx_flags
|= E1000_TX_FLAGS_CSUM
;
4747 * Old method was to assume IPv4 packet by default if TSO was enabled.
4748 * 82571 hardware supports TSO capabilities for IPv6 as well...
4749 * no longer assume, we must.
4751 if (skb
->protocol
== htons(ETH_P_IP
))
4752 tx_flags
|= E1000_TX_FLAGS_IPV4
;
4754 /* if count is 0 then mapping error has occured */
4755 count
= e1000_tx_map(adapter
, skb
, first
, max_per_txd
, nr_frags
, mss
);
4757 e1000_tx_queue(adapter
, tx_flags
, count
);
4758 /* Make sure there is space in the ring for the next send. */
4759 e1000_maybe_stop_tx(netdev
, MAX_SKB_FRAGS
+ 2);
4762 dev_kfree_skb_any(skb
);
4763 tx_ring
->buffer_info
[first
].time_stamp
= 0;
4764 tx_ring
->next_to_use
= first
;
4767 return NETDEV_TX_OK
;
4771 * e1000_tx_timeout - Respond to a Tx Hang
4772 * @netdev: network interface device structure
4774 static void e1000_tx_timeout(struct net_device
*netdev
)
4776 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4778 /* Do the reset outside of interrupt context */
4779 adapter
->tx_timeout_count
++;
4780 schedule_work(&adapter
->reset_task
);
4783 static void e1000_reset_task(struct work_struct
*work
)
4785 struct e1000_adapter
*adapter
;
4786 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
4788 e1000e_dump(adapter
);
4789 e_err("Reset adapter\n");
4790 e1000e_reinit_locked(adapter
);
4794 * e1000_get_stats - Get System Network Statistics
4795 * @netdev: network interface device structure
4797 * Returns the address of the device statistics structure.
4798 * The statistics are actually updated from the timer callback.
4800 static struct net_device_stats
*e1000_get_stats(struct net_device
*netdev
)
4802 /* only return the current stats */
4803 return &netdev
->stats
;
4807 * e1000_change_mtu - Change the Maximum Transfer Unit
4808 * @netdev: network interface device structure
4809 * @new_mtu: new value for maximum frame size
4811 * Returns 0 on success, negative on failure
4813 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
4815 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4816 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4818 /* Jumbo frame support */
4819 if ((max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) &&
4820 !(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
4821 e_err("Jumbo Frames not supported.\n");
4825 /* Supported frame sizes */
4826 if ((new_mtu
< ETH_ZLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
) ||
4827 (max_frame
> adapter
->max_hw_frame_size
)) {
4828 e_err("Unsupported MTU setting\n");
4832 /* 82573 Errata 17 */
4833 if (((adapter
->hw
.mac
.type
== e1000_82573
) ||
4834 (adapter
->hw
.mac
.type
== e1000_82574
)) &&
4835 (max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
)) {
4836 adapter
->flags2
|= FLAG2_DISABLE_ASPM_L1
;
4837 e1000e_disable_aspm(adapter
->pdev
, PCIE_LINK_STATE_L1
);
4840 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
4842 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
4843 adapter
->max_frame_size
= max_frame
;
4844 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
4845 netdev
->mtu
= new_mtu
;
4846 if (netif_running(netdev
))
4847 e1000e_down(adapter
);
4850 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
4851 * means we reserve 2 more, this pushes us to allocate from the next
4853 * i.e. RXBUFFER_2048 --> size-4096 slab
4854 * However with the new *_jumbo_rx* routines, jumbo receives will use
4858 if (max_frame
<= 2048)
4859 adapter
->rx_buffer_len
= 2048;
4861 adapter
->rx_buffer_len
= 4096;
4863 /* adjust allocation if LPE protects us, and we aren't using SBP */
4864 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
4865 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
4866 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
4869 if (netif_running(netdev
))
4872 e1000e_reset(adapter
);
4874 clear_bit(__E1000_RESETTING
, &adapter
->state
);
4879 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
4882 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4883 struct mii_ioctl_data
*data
= if_mii(ifr
);
4885 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
4890 data
->phy_id
= adapter
->hw
.phy
.addr
;
4893 e1000_phy_read_status(adapter
);
4895 switch (data
->reg_num
& 0x1F) {
4897 data
->val_out
= adapter
->phy_regs
.bmcr
;
4900 data
->val_out
= adapter
->phy_regs
.bmsr
;
4903 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
4906 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
4909 data
->val_out
= adapter
->phy_regs
.advertise
;
4912 data
->val_out
= adapter
->phy_regs
.lpa
;
4915 data
->val_out
= adapter
->phy_regs
.expansion
;
4918 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
4921 data
->val_out
= adapter
->phy_regs
.stat1000
;
4924 data
->val_out
= adapter
->phy_regs
.estatus
;
4937 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4943 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4949 static int e1000_init_phy_wakeup(struct e1000_adapter
*adapter
, u32 wufc
)
4951 struct e1000_hw
*hw
= &adapter
->hw
;
4956 /* copy MAC RARs to PHY RARs */
4957 e1000_copy_rx_addrs_to_phy_ich8lan(hw
);
4959 /* copy MAC MTA to PHY MTA */
4960 for (i
= 0; i
< adapter
->hw
.mac
.mta_reg_count
; i
++) {
4961 mac_reg
= E1000_READ_REG_ARRAY(hw
, E1000_MTA
, i
);
4962 e1e_wphy(hw
, BM_MTA(i
), (u16
)(mac_reg
& 0xFFFF));
4963 e1e_wphy(hw
, BM_MTA(i
) + 1, (u16
)((mac_reg
>> 16) & 0xFFFF));
4966 /* configure PHY Rx Control register */
4967 e1e_rphy(&adapter
->hw
, BM_RCTL
, &phy_reg
);
4968 mac_reg
= er32(RCTL
);
4969 if (mac_reg
& E1000_RCTL_UPE
)
4970 phy_reg
|= BM_RCTL_UPE
;
4971 if (mac_reg
& E1000_RCTL_MPE
)
4972 phy_reg
|= BM_RCTL_MPE
;
4973 phy_reg
&= ~(BM_RCTL_MO_MASK
);
4974 if (mac_reg
& E1000_RCTL_MO_3
)
4975 phy_reg
|= (((mac_reg
& E1000_RCTL_MO_3
) >> E1000_RCTL_MO_SHIFT
)
4976 << BM_RCTL_MO_SHIFT
);
4977 if (mac_reg
& E1000_RCTL_BAM
)
4978 phy_reg
|= BM_RCTL_BAM
;
4979 if (mac_reg
& E1000_RCTL_PMCF
)
4980 phy_reg
|= BM_RCTL_PMCF
;
4981 mac_reg
= er32(CTRL
);
4982 if (mac_reg
& E1000_CTRL_RFCE
)
4983 phy_reg
|= BM_RCTL_RFCE
;
4984 e1e_wphy(&adapter
->hw
, BM_RCTL
, phy_reg
);
4986 /* enable PHY wakeup in MAC register */
4988 ew32(WUC
, E1000_WUC_PHY_WAKE
| E1000_WUC_PME_EN
);
4990 /* configure and enable PHY wakeup in PHY registers */
4991 e1e_wphy(&adapter
->hw
, BM_WUFC
, wufc
);
4992 e1e_wphy(&adapter
->hw
, BM_WUC
, E1000_WUC_PME_EN
);
4994 /* activate PHY wakeup */
4995 retval
= hw
->phy
.ops
.acquire(hw
);
4997 e_err("Could not acquire PHY\n");
5000 e1000e_write_phy_reg_mdic(hw
, IGP01E1000_PHY_PAGE_SELECT
,
5001 (BM_WUC_ENABLE_PAGE
<< IGP_PAGE_SHIFT
));
5002 retval
= e1000e_read_phy_reg_mdic(hw
, BM_WUC_ENABLE_REG
, &phy_reg
);
5004 e_err("Could not read PHY page 769\n");
5007 phy_reg
|= BM_WUC_ENABLE_BIT
| BM_WUC_HOST_WU_BIT
;
5008 retval
= e1000e_write_phy_reg_mdic(hw
, BM_WUC_ENABLE_REG
, phy_reg
);
5010 e_err("Could not set PHY Host Wakeup bit\n");
5012 hw
->phy
.ops
.release(hw
);
5017 static int __e1000_shutdown(struct pci_dev
*pdev
, bool *enable_wake
,
5020 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5021 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5022 struct e1000_hw
*hw
= &adapter
->hw
;
5023 u32 ctrl
, ctrl_ext
, rctl
, status
;
5024 /* Runtime suspend should only enable wakeup for link changes */
5025 u32 wufc
= runtime
? E1000_WUFC_LNKC
: adapter
->wol
;
5028 netif_device_detach(netdev
);
5030 if (netif_running(netdev
)) {
5031 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
5032 e1000e_down(adapter
);
5033 e1000_free_irq(adapter
);
5035 e1000e_reset_interrupt_capability(adapter
);
5037 retval
= pci_save_state(pdev
);
5041 status
= er32(STATUS
);
5042 if (status
& E1000_STATUS_LU
)
5043 wufc
&= ~E1000_WUFC_LNKC
;
5046 e1000_setup_rctl(adapter
);
5047 e1000_set_multi(netdev
);
5049 /* turn on all-multi mode if wake on multicast is enabled */
5050 if (wufc
& E1000_WUFC_MC
) {
5052 rctl
|= E1000_RCTL_MPE
;
5057 /* advertise wake from D3Cold */
5058 #define E1000_CTRL_ADVD3WUC 0x00100000
5059 /* phy power management enable */
5060 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5061 ctrl
|= E1000_CTRL_ADVD3WUC
;
5062 if (!(adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
))
5063 ctrl
|= E1000_CTRL_EN_PHY_PWR_MGMT
;
5066 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
5067 adapter
->hw
.phy
.media_type
==
5068 e1000_media_type_internal_serdes
) {
5069 /* keep the laser running in D3 */
5070 ctrl_ext
= er32(CTRL_EXT
);
5071 ctrl_ext
|= E1000_CTRL_EXT_SDP3_DATA
;
5072 ew32(CTRL_EXT
, ctrl_ext
);
5075 if (adapter
->flags
& FLAG_IS_ICH
)
5076 e1000e_disable_gig_wol_ich8lan(&adapter
->hw
);
5078 /* Allow time for pending master requests to run */
5079 e1000e_disable_pcie_master(&adapter
->hw
);
5081 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
5082 /* enable wakeup by the PHY */
5083 retval
= e1000_init_phy_wakeup(adapter
, wufc
);
5087 /* enable wakeup by the MAC */
5089 ew32(WUC
, E1000_WUC_PME_EN
);
5096 *enable_wake
= !!wufc
;
5098 /* make sure adapter isn't asleep if manageability is enabled */
5099 if ((adapter
->flags
& FLAG_MNG_PT_ENABLED
) ||
5100 (hw
->mac
.ops
.check_mng_mode(hw
)))
5101 *enable_wake
= true;
5103 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
)
5104 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
5107 * Release control of h/w to f/w. If f/w is AMT enabled, this
5108 * would have already happened in close and is redundant.
5110 e1000_release_hw_control(adapter
);
5112 pci_disable_device(pdev
);
5117 static void e1000_power_off(struct pci_dev
*pdev
, bool sleep
, bool wake
)
5119 if (sleep
&& wake
) {
5120 pci_prepare_to_sleep(pdev
);
5124 pci_wake_from_d3(pdev
, wake
);
5125 pci_set_power_state(pdev
, PCI_D3hot
);
5128 static void e1000_complete_shutdown(struct pci_dev
*pdev
, bool sleep
,
5131 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5132 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5135 * The pci-e switch on some quad port adapters will report a
5136 * correctable error when the MAC transitions from D0 to D3. To
5137 * prevent this we need to mask off the correctable errors on the
5138 * downstream port of the pci-e switch.
5140 if (adapter
->flags
& FLAG_IS_QUAD_PORT
) {
5141 struct pci_dev
*us_dev
= pdev
->bus
->self
;
5142 int pos
= pci_find_capability(us_dev
, PCI_CAP_ID_EXP
);
5145 pci_read_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, &devctl
);
5146 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
,
5147 (devctl
& ~PCI_EXP_DEVCTL_CERE
));
5149 e1000_power_off(pdev
, sleep
, wake
);
5151 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, devctl
);
5153 e1000_power_off(pdev
, sleep
, wake
);
5157 #ifdef CONFIG_PCIEASPM
5158 static void __e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5160 pci_disable_link_state(pdev
, state
);
5163 static void __e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5169 * Both device and parent should have the same ASPM setting.
5170 * Disable ASPM in downstream component first and then upstream.
5172 pos
= pci_pcie_cap(pdev
);
5173 pci_read_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, ®16
);
5175 pci_write_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, reg16
);
5177 if (!pdev
->bus
->self
)
5180 pos
= pci_pcie_cap(pdev
->bus
->self
);
5181 pci_read_config_word(pdev
->bus
->self
, pos
+ PCI_EXP_LNKCTL
, ®16
);
5183 pci_write_config_word(pdev
->bus
->self
, pos
+ PCI_EXP_LNKCTL
, reg16
);
5186 void e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5188 dev_info(&pdev
->dev
, "Disabling ASPM %s %s\n",
5189 (state
& PCIE_LINK_STATE_L0S
) ? "L0s" : "",
5190 (state
& PCIE_LINK_STATE_L1
) ? "L1" : "");
5192 __e1000e_disable_aspm(pdev
, state
);
5195 #ifdef CONFIG_PM_OPS
5196 static bool e1000e_pm_ready(struct e1000_adapter
*adapter
)
5198 return !!adapter
->tx_ring
->buffer_info
;
5201 static int __e1000_resume(struct pci_dev
*pdev
)
5203 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5204 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5205 struct e1000_hw
*hw
= &adapter
->hw
;
5208 pci_set_power_state(pdev
, PCI_D0
);
5209 pci_restore_state(pdev
);
5210 pci_save_state(pdev
);
5211 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5212 e1000e_disable_aspm(pdev
, PCIE_LINK_STATE_L1
);
5214 e1000e_set_interrupt_capability(adapter
);
5215 if (netif_running(netdev
)) {
5216 err
= e1000_request_irq(adapter
);
5221 e1000e_power_up_phy(adapter
);
5223 /* report the system wakeup cause from S3/S4 */
5224 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
5227 e1e_rphy(&adapter
->hw
, BM_WUS
, &phy_data
);
5229 e_info("PHY Wakeup cause - %s\n",
5230 phy_data
& E1000_WUS_EX
? "Unicast Packet" :
5231 phy_data
& E1000_WUS_MC
? "Multicast Packet" :
5232 phy_data
& E1000_WUS_BC
? "Broadcast Packet" :
5233 phy_data
& E1000_WUS_MAG
? "Magic Packet" :
5234 phy_data
& E1000_WUS_LNKC
? "Link Status "
5235 " Change" : "other");
5237 e1e_wphy(&adapter
->hw
, BM_WUS
, ~0);
5239 u32 wus
= er32(WUS
);
5241 e_info("MAC Wakeup cause - %s\n",
5242 wus
& E1000_WUS_EX
? "Unicast Packet" :
5243 wus
& E1000_WUS_MC
? "Multicast Packet" :
5244 wus
& E1000_WUS_BC
? "Broadcast Packet" :
5245 wus
& E1000_WUS_MAG
? "Magic Packet" :
5246 wus
& E1000_WUS_LNKC
? "Link Status Change" :
5252 e1000e_reset(adapter
);
5254 e1000_init_manageability_pt(adapter
);
5256 if (netif_running(netdev
))
5259 netif_device_attach(netdev
);
5262 * If the controller has AMT, do not set DRV_LOAD until the interface
5263 * is up. For all other cases, let the f/w know that the h/w is now
5264 * under the control of the driver.
5266 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5267 e1000_get_hw_control(adapter
);
5272 #ifdef CONFIG_PM_SLEEP
5273 static int e1000_suspend(struct device
*dev
)
5275 struct pci_dev
*pdev
= to_pci_dev(dev
);
5279 retval
= __e1000_shutdown(pdev
, &wake
, false);
5281 e1000_complete_shutdown(pdev
, true, wake
);
5286 static int e1000_resume(struct device
*dev
)
5288 struct pci_dev
*pdev
= to_pci_dev(dev
);
5289 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5290 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5292 if (e1000e_pm_ready(adapter
))
5293 adapter
->idle_check
= true;
5295 return __e1000_resume(pdev
);
5297 #endif /* CONFIG_PM_SLEEP */
5299 #ifdef CONFIG_PM_RUNTIME
5300 static int e1000_runtime_suspend(struct device
*dev
)
5302 struct pci_dev
*pdev
= to_pci_dev(dev
);
5303 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5304 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5306 if (e1000e_pm_ready(adapter
)) {
5309 __e1000_shutdown(pdev
, &wake
, true);
5315 static int e1000_idle(struct device
*dev
)
5317 struct pci_dev
*pdev
= to_pci_dev(dev
);
5318 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5319 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5321 if (!e1000e_pm_ready(adapter
))
5324 if (adapter
->idle_check
) {
5325 adapter
->idle_check
= false;
5326 if (!e1000e_has_link(adapter
))
5327 pm_schedule_suspend(dev
, MSEC_PER_SEC
);
5333 static int e1000_runtime_resume(struct device
*dev
)
5335 struct pci_dev
*pdev
= to_pci_dev(dev
);
5336 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5337 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5339 if (!e1000e_pm_ready(adapter
))
5342 adapter
->idle_check
= !dev
->power
.runtime_auto
;
5343 return __e1000_resume(pdev
);
5345 #endif /* CONFIG_PM_RUNTIME */
5346 #endif /* CONFIG_PM_OPS */
5348 static void e1000_shutdown(struct pci_dev
*pdev
)
5352 __e1000_shutdown(pdev
, &wake
, false);
5354 if (system_state
== SYSTEM_POWER_OFF
)
5355 e1000_complete_shutdown(pdev
, false, wake
);
5358 #ifdef CONFIG_NET_POLL_CONTROLLER
5360 * Polling 'interrupt' - used by things like netconsole to send skbs
5361 * without having to re-enable interrupts. It's not called while
5362 * the interrupt routine is executing.
5364 static void e1000_netpoll(struct net_device
*netdev
)
5366 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5368 disable_irq(adapter
->pdev
->irq
);
5369 e1000_intr(adapter
->pdev
->irq
, netdev
);
5371 enable_irq(adapter
->pdev
->irq
);
5376 * e1000_io_error_detected - called when PCI error is detected
5377 * @pdev: Pointer to PCI device
5378 * @state: The current pci connection state
5380 * This function is called after a PCI bus error affecting
5381 * this device has been detected.
5383 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
5384 pci_channel_state_t state
)
5386 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5387 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5389 netif_device_detach(netdev
);
5391 if (state
== pci_channel_io_perm_failure
)
5392 return PCI_ERS_RESULT_DISCONNECT
;
5394 if (netif_running(netdev
))
5395 e1000e_down(adapter
);
5396 pci_disable_device(pdev
);
5398 /* Request a slot slot reset. */
5399 return PCI_ERS_RESULT_NEED_RESET
;
5403 * e1000_io_slot_reset - called after the pci bus has been reset.
5404 * @pdev: Pointer to PCI device
5406 * Restart the card from scratch, as if from a cold-boot. Implementation
5407 * resembles the first-half of the e1000_resume routine.
5409 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
5411 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5412 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5413 struct e1000_hw
*hw
= &adapter
->hw
;
5415 pci_ers_result_t result
;
5417 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5418 e1000e_disable_aspm(pdev
, PCIE_LINK_STATE_L1
);
5419 err
= pci_enable_device_mem(pdev
);
5422 "Cannot re-enable PCI device after reset.\n");
5423 result
= PCI_ERS_RESULT_DISCONNECT
;
5425 pci_set_master(pdev
);
5426 pdev
->state_saved
= true;
5427 pci_restore_state(pdev
);
5429 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5430 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5432 e1000e_reset(adapter
);
5434 result
= PCI_ERS_RESULT_RECOVERED
;
5437 pci_cleanup_aer_uncorrect_error_status(pdev
);
5443 * e1000_io_resume - called when traffic can start flowing again.
5444 * @pdev: Pointer to PCI device
5446 * This callback is called when the error recovery driver tells us that
5447 * its OK to resume normal operation. Implementation resembles the
5448 * second-half of the e1000_resume routine.
5450 static void e1000_io_resume(struct pci_dev
*pdev
)
5452 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5453 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5455 e1000_init_manageability_pt(adapter
);
5457 if (netif_running(netdev
)) {
5458 if (e1000e_up(adapter
)) {
5460 "can't bring device back up after reset\n");
5465 netif_device_attach(netdev
);
5468 * If the controller has AMT, do not set DRV_LOAD until the interface
5469 * is up. For all other cases, let the f/w know that the h/w is now
5470 * under the control of the driver.
5472 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5473 e1000_get_hw_control(adapter
);
5477 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
5479 struct e1000_hw
*hw
= &adapter
->hw
;
5480 struct net_device
*netdev
= adapter
->netdev
;
5483 /* print bus type/speed/width info */
5484 e_info("(PCI Express:2.5GB/s:%s) %pM\n",
5486 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
5490 e_info("Intel(R) PRO/%s Network Connection\n",
5491 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
5492 e1000e_read_pba_num(hw
, &pba_num
);
5493 e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
5494 hw
->mac
.type
, hw
->phy
.type
, (pba_num
>> 8), (pba_num
& 0xff));
5497 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
5499 struct e1000_hw
*hw
= &adapter
->hw
;
5503 if (hw
->mac
.type
!= e1000_82573
)
5506 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
5507 if (!ret_val
&& (!(le16_to_cpu(buf
) & (1 << 0)))) {
5508 /* Deep Smart Power Down (DSPD) */
5509 dev_warn(&adapter
->pdev
->dev
,
5510 "Warning: detected DSPD enabled in EEPROM\n");
5514 static const struct net_device_ops e1000e_netdev_ops
= {
5515 .ndo_open
= e1000_open
,
5516 .ndo_stop
= e1000_close
,
5517 .ndo_start_xmit
= e1000_xmit_frame
,
5518 .ndo_get_stats
= e1000_get_stats
,
5519 .ndo_set_multicast_list
= e1000_set_multi
,
5520 .ndo_set_mac_address
= e1000_set_mac
,
5521 .ndo_change_mtu
= e1000_change_mtu
,
5522 .ndo_do_ioctl
= e1000_ioctl
,
5523 .ndo_tx_timeout
= e1000_tx_timeout
,
5524 .ndo_validate_addr
= eth_validate_addr
,
5526 .ndo_vlan_rx_register
= e1000_vlan_rx_register
,
5527 .ndo_vlan_rx_add_vid
= e1000_vlan_rx_add_vid
,
5528 .ndo_vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
,
5529 #ifdef CONFIG_NET_POLL_CONTROLLER
5530 .ndo_poll_controller
= e1000_netpoll
,
5535 * e1000_probe - Device Initialization Routine
5536 * @pdev: PCI device information struct
5537 * @ent: entry in e1000_pci_tbl
5539 * Returns 0 on success, negative on failure
5541 * e1000_probe initializes an adapter identified by a pci_dev structure.
5542 * The OS initialization, configuring of the adapter private structure,
5543 * and a hardware reset occur.
5545 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
5546 const struct pci_device_id
*ent
)
5548 struct net_device
*netdev
;
5549 struct e1000_adapter
*adapter
;
5550 struct e1000_hw
*hw
;
5551 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
5552 resource_size_t mmio_start
, mmio_len
;
5553 resource_size_t flash_start
, flash_len
;
5555 static int cards_found
;
5556 int i
, err
, pci_using_dac
;
5557 u16 eeprom_data
= 0;
5558 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
5560 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5561 e1000e_disable_aspm(pdev
, PCIE_LINK_STATE_L1
);
5563 err
= pci_enable_device_mem(pdev
);
5568 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(64));
5570 err
= dma_set_coherent_mask(&pdev
->dev
, DMA_BIT_MASK(64));
5574 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(32));
5576 err
= dma_set_coherent_mask(&pdev
->dev
,
5579 dev_err(&pdev
->dev
, "No usable DMA "
5580 "configuration, aborting\n");
5586 err
= pci_request_selected_regions_exclusive(pdev
,
5587 pci_select_bars(pdev
, IORESOURCE_MEM
),
5588 e1000e_driver_name
);
5592 /* AER (Advanced Error Reporting) hooks */
5593 pci_enable_pcie_error_reporting(pdev
);
5595 pci_set_master(pdev
);
5596 /* PCI config space info */
5597 err
= pci_save_state(pdev
);
5599 goto err_alloc_etherdev
;
5602 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
5604 goto err_alloc_etherdev
;
5606 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
5608 netdev
->irq
= pdev
->irq
;
5610 pci_set_drvdata(pdev
, netdev
);
5611 adapter
= netdev_priv(netdev
);
5613 adapter
->netdev
= netdev
;
5614 adapter
->pdev
= pdev
;
5616 adapter
->pba
= ei
->pba
;
5617 adapter
->flags
= ei
->flags
;
5618 adapter
->flags2
= ei
->flags2
;
5619 adapter
->hw
.adapter
= adapter
;
5620 adapter
->hw
.mac
.type
= ei
->mac
;
5621 adapter
->max_hw_frame_size
= ei
->max_hw_frame_size
;
5622 adapter
->msg_enable
= (1 << NETIF_MSG_DRV
| NETIF_MSG_PROBE
) - 1;
5624 mmio_start
= pci_resource_start(pdev
, 0);
5625 mmio_len
= pci_resource_len(pdev
, 0);
5628 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
5629 if (!adapter
->hw
.hw_addr
)
5632 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
5633 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
5634 flash_start
= pci_resource_start(pdev
, 1);
5635 flash_len
= pci_resource_len(pdev
, 1);
5636 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
5637 if (!adapter
->hw
.flash_address
)
5641 /* construct the net_device struct */
5642 netdev
->netdev_ops
= &e1000e_netdev_ops
;
5643 e1000e_set_ethtool_ops(netdev
);
5644 netdev
->watchdog_timeo
= 5 * HZ
;
5645 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
5646 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
5648 netdev
->mem_start
= mmio_start
;
5649 netdev
->mem_end
= mmio_start
+ mmio_len
;
5651 adapter
->bd_number
= cards_found
++;
5653 e1000e_check_options(adapter
);
5655 /* setup adapter struct */
5656 err
= e1000_sw_init(adapter
);
5660 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
5661 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
5662 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
5664 err
= ei
->get_variants(adapter
);
5668 if ((adapter
->flags
& FLAG_IS_ICH
) &&
5669 (adapter
->flags
& FLAG_READ_ONLY_NVM
))
5670 e1000e_write_protect_nvm_ich8lan(&adapter
->hw
);
5672 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
5674 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
5676 /* Copper options */
5677 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
5678 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
5679 adapter
->hw
.phy
.disable_polarity_correction
= 0;
5680 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
5683 if (e1000_check_reset_block(&adapter
->hw
))
5684 e_info("PHY reset is blocked due to SOL/IDER session.\n");
5686 netdev
->features
= NETIF_F_SG
|
5688 NETIF_F_HW_VLAN_TX
|
5691 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
5692 netdev
->features
|= NETIF_F_HW_VLAN_FILTER
;
5694 netdev
->features
|= NETIF_F_TSO
;
5695 netdev
->features
|= NETIF_F_TSO6
;
5697 netdev
->vlan_features
|= NETIF_F_TSO
;
5698 netdev
->vlan_features
|= NETIF_F_TSO6
;
5699 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
5700 netdev
->vlan_features
|= NETIF_F_SG
;
5703 netdev
->features
|= NETIF_F_HIGHDMA
;
5705 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
5706 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
5709 * before reading the NVM, reset the controller to
5710 * put the device in a known good starting state
5712 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
5715 * systems with ASPM and others may see the checksum fail on the first
5716 * attempt. Let's give it a few tries
5719 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
5722 e_err("The NVM Checksum Is Not Valid\n");
5728 e1000_eeprom_checks(adapter
);
5730 /* copy the MAC address */
5731 if (e1000e_read_mac_addr(&adapter
->hw
))
5732 e_err("NVM Read Error while reading MAC address\n");
5734 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
5735 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
5737 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
5738 e_err("Invalid MAC Address: %pM\n", netdev
->perm_addr
);
5743 init_timer(&adapter
->watchdog_timer
);
5744 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
5745 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
5747 init_timer(&adapter
->phy_info_timer
);
5748 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
5749 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
5751 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
5752 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
5753 INIT_WORK(&adapter
->downshift_task
, e1000e_downshift_workaround
);
5754 INIT_WORK(&adapter
->update_phy_task
, e1000e_update_phy_task
);
5755 INIT_WORK(&adapter
->print_hang_task
, e1000_print_hw_hang
);
5757 /* Initialize link parameters. User can change them with ethtool */
5758 adapter
->hw
.mac
.autoneg
= 1;
5759 adapter
->fc_autoneg
= 1;
5760 adapter
->hw
.fc
.requested_mode
= e1000_fc_default
;
5761 adapter
->hw
.fc
.current_mode
= e1000_fc_default
;
5762 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
5764 /* ring size defaults */
5765 adapter
->rx_ring
->count
= 256;
5766 adapter
->tx_ring
->count
= 256;
5769 * Initial Wake on LAN setting - If APM wake is enabled in
5770 * the EEPROM, enable the ACPI Magic Packet filter
5772 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
5773 /* APME bit in EEPROM is mapped to WUC.APME */
5774 eeprom_data
= er32(WUC
);
5775 eeprom_apme_mask
= E1000_WUC_APME
;
5776 if (eeprom_data
& E1000_WUC_PHY_WAKE
)
5777 adapter
->flags2
|= FLAG2_HAS_PHY_WAKEUP
;
5778 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
5779 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
5780 (adapter
->hw
.bus
.func
== 1))
5781 e1000_read_nvm(&adapter
->hw
,
5782 NVM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
5784 e1000_read_nvm(&adapter
->hw
,
5785 NVM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
5788 /* fetch WoL from EEPROM */
5789 if (eeprom_data
& eeprom_apme_mask
)
5790 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
5793 * now that we have the eeprom settings, apply the special cases
5794 * where the eeprom may be wrong or the board simply won't support
5795 * wake on lan on a particular port
5797 if (!(adapter
->flags
& FLAG_HAS_WOL
))
5798 adapter
->eeprom_wol
= 0;
5800 /* initialize the wol settings based on the eeprom settings */
5801 adapter
->wol
= adapter
->eeprom_wol
;
5802 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
5804 /* save off EEPROM version number */
5805 e1000_read_nvm(&adapter
->hw
, 5, 1, &adapter
->eeprom_vers
);
5807 /* reset the hardware with the new settings */
5808 e1000e_reset(adapter
);
5811 * If the controller has AMT, do not set DRV_LOAD until the interface
5812 * is up. For all other cases, let the f/w know that the h/w is now
5813 * under the control of the driver.
5815 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5816 e1000_get_hw_control(adapter
);
5818 strcpy(netdev
->name
, "eth%d");
5819 err
= register_netdev(netdev
);
5823 /* carrier off reporting is important to ethtool even BEFORE open */
5824 netif_carrier_off(netdev
);
5826 e1000_print_device_info(adapter
);
5828 if (pci_dev_run_wake(pdev
)) {
5829 pm_runtime_set_active(&pdev
->dev
);
5830 pm_runtime_enable(&pdev
->dev
);
5832 pm_schedule_suspend(&pdev
->dev
, MSEC_PER_SEC
);
5837 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5838 e1000_release_hw_control(adapter
);
5840 if (!e1000_check_reset_block(&adapter
->hw
))
5841 e1000_phy_hw_reset(&adapter
->hw
);
5844 kfree(adapter
->tx_ring
);
5845 kfree(adapter
->rx_ring
);
5847 if (adapter
->hw
.flash_address
)
5848 iounmap(adapter
->hw
.flash_address
);
5849 e1000e_reset_interrupt_capability(adapter
);
5851 iounmap(adapter
->hw
.hw_addr
);
5853 free_netdev(netdev
);
5855 pci_release_selected_regions(pdev
,
5856 pci_select_bars(pdev
, IORESOURCE_MEM
));
5859 pci_disable_device(pdev
);
5864 * e1000_remove - Device Removal Routine
5865 * @pdev: PCI device information struct
5867 * e1000_remove is called by the PCI subsystem to alert the driver
5868 * that it should release a PCI device. The could be caused by a
5869 * Hot-Plug event, or because the driver is going to be removed from
5872 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
5874 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5875 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5876 bool down
= test_bit(__E1000_DOWN
, &adapter
->state
);
5878 pm_runtime_get_sync(&pdev
->dev
);
5881 * flush_scheduled work may reschedule our watchdog task, so
5882 * explicitly disable watchdog tasks from being rescheduled
5885 set_bit(__E1000_DOWN
, &adapter
->state
);
5886 del_timer_sync(&adapter
->watchdog_timer
);
5887 del_timer_sync(&adapter
->phy_info_timer
);
5889 cancel_work_sync(&adapter
->reset_task
);
5890 cancel_work_sync(&adapter
->watchdog_task
);
5891 cancel_work_sync(&adapter
->downshift_task
);
5892 cancel_work_sync(&adapter
->update_phy_task
);
5893 cancel_work_sync(&adapter
->print_hang_task
);
5894 flush_scheduled_work();
5896 if (!(netdev
->flags
& IFF_UP
))
5897 e1000_power_down_phy(adapter
);
5899 /* Don't lie to e1000_close() down the road. */
5901 clear_bit(__E1000_DOWN
, &adapter
->state
);
5902 unregister_netdev(netdev
);
5904 if (pci_dev_run_wake(pdev
)) {
5905 pm_runtime_disable(&pdev
->dev
);
5906 pm_runtime_set_suspended(&pdev
->dev
);
5908 pm_runtime_put_noidle(&pdev
->dev
);
5911 * Release control of h/w to f/w. If f/w is AMT enabled, this
5912 * would have already happened in close and is redundant.
5914 e1000_release_hw_control(adapter
);
5916 e1000e_reset_interrupt_capability(adapter
);
5917 kfree(adapter
->tx_ring
);
5918 kfree(adapter
->rx_ring
);
5920 iounmap(adapter
->hw
.hw_addr
);
5921 if (adapter
->hw
.flash_address
)
5922 iounmap(adapter
->hw
.flash_address
);
5923 pci_release_selected_regions(pdev
,
5924 pci_select_bars(pdev
, IORESOURCE_MEM
));
5926 free_netdev(netdev
);
5929 pci_disable_pcie_error_reporting(pdev
);
5931 pci_disable_device(pdev
);
5934 /* PCI Error Recovery (ERS) */
5935 static struct pci_error_handlers e1000_err_handler
= {
5936 .error_detected
= e1000_io_error_detected
,
5937 .slot_reset
= e1000_io_slot_reset
,
5938 .resume
= e1000_io_resume
,
5941 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl
) = {
5942 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
5943 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
5944 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
5945 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
), board_82571
},
5946 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
5947 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
5948 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
5949 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
5950 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
5952 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
5953 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
5954 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
5955 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
5957 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
5958 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
5959 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
5961 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574L
), board_82574
},
5962 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574LA
), board_82574
},
5963 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82583V
), board_82583
},
5965 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
5966 board_80003es2lan
},
5967 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
5968 board_80003es2lan
},
5969 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
5970 board_80003es2lan
},
5971 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
5972 board_80003es2lan
},
5974 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
5975 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
5976 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
5977 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
5978 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
5979 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
5980 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
5981 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_82567V_3
), board_ich8lan
},
5983 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
5984 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
5985 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
5986 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
5987 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
5988 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_BM
), board_ich9lan
},
5989 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
5990 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
5991 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
5993 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
5994 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
5995 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
5997 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LM
), board_ich10lan
},
5998 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LF
), board_ich10lan
},
5999 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_V
), board_ich10lan
},
6001 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LM
), board_pchlan
},
6002 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LC
), board_pchlan
},
6003 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DM
), board_pchlan
},
6004 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DC
), board_pchlan
},
6006 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_LM
), board_pch2lan
},
6007 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_V
), board_pch2lan
},
6009 { } /* terminate list */
6011 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
6013 #ifdef CONFIG_PM_OPS
6014 static const struct dev_pm_ops e1000_pm_ops
= {
6015 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend
, e1000_resume
)
6016 SET_RUNTIME_PM_OPS(e1000_runtime_suspend
,
6017 e1000_runtime_resume
, e1000_idle
)
6021 /* PCI Device API Driver */
6022 static struct pci_driver e1000_driver
= {
6023 .name
= e1000e_driver_name
,
6024 .id_table
= e1000_pci_tbl
,
6025 .probe
= e1000_probe
,
6026 .remove
= __devexit_p(e1000_remove
),
6027 #ifdef CONFIG_PM_OPS
6028 .driver
.pm
= &e1000_pm_ops
,
6030 .shutdown
= e1000_shutdown
,
6031 .err_handler
= &e1000_err_handler
6035 * e1000_init_module - Driver Registration Routine
6037 * e1000_init_module is the first routine called when the driver is
6038 * loaded. All it does is register with the PCI subsystem.
6040 static int __init
e1000_init_module(void)
6043 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
6044 e1000e_driver_version
);
6045 pr_info("Copyright (c) 1999 - 2010 Intel Corporation.\n");
6046 ret
= pci_register_driver(&e1000_driver
);
6050 module_init(e1000_init_module
);
6053 * e1000_exit_module - Driver Exit Cleanup Routine
6055 * e1000_exit_module is called just before the driver is removed
6058 static void __exit
e1000_exit_module(void)
6060 pci_unregister_driver(&e1000_driver
);
6062 module_exit(e1000_exit_module
);
6065 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
6066 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
6067 MODULE_LICENSE("GPL");
6068 MODULE_VERSION(DRV_VERSION
);