1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2011 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/interrupt.h>
35 #include <linux/pci.h>
36 #include <linux/vmalloc.h>
37 #include <linux/pagemap.h>
38 #include <linux/delay.h>
39 #include <linux/netdevice.h>
40 #include <linux/tcp.h>
41 #include <linux/ipv6.h>
42 #include <linux/slab.h>
43 #include <net/checksum.h>
44 #include <net/ip6_checksum.h>
45 #include <linux/mii.h>
46 #include <linux/ethtool.h>
47 #include <linux/if_vlan.h>
48 #include <linux/cpu.h>
49 #include <linux/smp.h>
50 #include <linux/pm_qos_params.h>
51 #include <linux/pm_runtime.h>
52 #include <linux/aer.h>
53 #include <linux/prefetch.h>
57 #define DRV_EXTRAVERSION "-k"
59 #define DRV_VERSION "1.3.16" DRV_EXTRAVERSION
60 char e1000e_driver_name
[] = "e1000e";
61 const char e1000e_driver_version
[] = DRV_VERSION
;
63 static void e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
);
65 static const struct e1000_info
*e1000_info_tbl
[] = {
66 [board_82571
] = &e1000_82571_info
,
67 [board_82572
] = &e1000_82572_info
,
68 [board_82573
] = &e1000_82573_info
,
69 [board_82574
] = &e1000_82574_info
,
70 [board_82583
] = &e1000_82583_info
,
71 [board_80003es2lan
] = &e1000_es2_info
,
72 [board_ich8lan
] = &e1000_ich8_info
,
73 [board_ich9lan
] = &e1000_ich9_info
,
74 [board_ich10lan
] = &e1000_ich10_info
,
75 [board_pchlan
] = &e1000_pch_info
,
76 [board_pch2lan
] = &e1000_pch2_info
,
79 struct e1000_reg_info
{
84 #define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */
85 #define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */
86 #define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */
87 #define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */
88 #define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */
90 #define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */
91 #define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */
92 #define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */
93 #define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */
94 #define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */
96 static const struct e1000_reg_info e1000_reg_info_tbl
[] = {
98 /* General Registers */
100 {E1000_STATUS
, "STATUS"},
101 {E1000_CTRL_EXT
, "CTRL_EXT"},
103 /* Interrupt Registers */
107 {E1000_RCTL
, "RCTL"},
108 {E1000_RDLEN
, "RDLEN"},
111 {E1000_RDTR
, "RDTR"},
112 {E1000_RXDCTL(0), "RXDCTL"},
114 {E1000_RDBAL
, "RDBAL"},
115 {E1000_RDBAH
, "RDBAH"},
116 {E1000_RDFH
, "RDFH"},
117 {E1000_RDFT
, "RDFT"},
118 {E1000_RDFHS
, "RDFHS"},
119 {E1000_RDFTS
, "RDFTS"},
120 {E1000_RDFPC
, "RDFPC"},
123 {E1000_TCTL
, "TCTL"},
124 {E1000_TDBAL
, "TDBAL"},
125 {E1000_TDBAH
, "TDBAH"},
126 {E1000_TDLEN
, "TDLEN"},
129 {E1000_TIDV
, "TIDV"},
130 {E1000_TXDCTL(0), "TXDCTL"},
131 {E1000_TADV
, "TADV"},
132 {E1000_TARC(0), "TARC"},
133 {E1000_TDFH
, "TDFH"},
134 {E1000_TDFT
, "TDFT"},
135 {E1000_TDFHS
, "TDFHS"},
136 {E1000_TDFTS
, "TDFTS"},
137 {E1000_TDFPC
, "TDFPC"},
139 /* List Terminator */
144 * e1000_regdump - register printout routine
146 static void e1000_regdump(struct e1000_hw
*hw
, struct e1000_reg_info
*reginfo
)
152 switch (reginfo
->ofs
) {
153 case E1000_RXDCTL(0):
154 for (n
= 0; n
< 2; n
++)
155 regs
[n
] = __er32(hw
, E1000_RXDCTL(n
));
157 case E1000_TXDCTL(0):
158 for (n
= 0; n
< 2; n
++)
159 regs
[n
] = __er32(hw
, E1000_TXDCTL(n
));
162 for (n
= 0; n
< 2; n
++)
163 regs
[n
] = __er32(hw
, E1000_TARC(n
));
166 printk(KERN_INFO
"%-15s %08x\n",
167 reginfo
->name
, __er32(hw
, reginfo
->ofs
));
171 snprintf(rname
, 16, "%s%s", reginfo
->name
, "[0-1]");
172 printk(KERN_INFO
"%-15s ", rname
);
173 for (n
= 0; n
< 2; n
++)
174 printk(KERN_CONT
"%08x ", regs
[n
]);
175 printk(KERN_CONT
"\n");
179 * e1000e_dump - Print registers, Tx-ring and Rx-ring
181 static void e1000e_dump(struct e1000_adapter
*adapter
)
183 struct net_device
*netdev
= adapter
->netdev
;
184 struct e1000_hw
*hw
= &adapter
->hw
;
185 struct e1000_reg_info
*reginfo
;
186 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
187 struct e1000_tx_desc
*tx_desc
;
192 struct e1000_buffer
*buffer_info
;
193 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
194 union e1000_rx_desc_packet_split
*rx_desc_ps
;
195 struct e1000_rx_desc
*rx_desc
;
205 if (!netif_msg_hw(adapter
))
208 /* Print netdevice Info */
210 dev_info(&adapter
->pdev
->dev
, "Net device Info\n");
211 printk(KERN_INFO
"Device Name state "
212 "trans_start last_rx\n");
213 printk(KERN_INFO
"%-15s %016lX %016lX %016lX\n",
214 netdev
->name
, netdev
->state
, netdev
->trans_start
,
218 /* Print Registers */
219 dev_info(&adapter
->pdev
->dev
, "Register Dump\n");
220 printk(KERN_INFO
" Register Name Value\n");
221 for (reginfo
= (struct e1000_reg_info
*)e1000_reg_info_tbl
;
222 reginfo
->name
; reginfo
++) {
223 e1000_regdump(hw
, reginfo
);
226 /* Print Tx Ring Summary */
227 if (!netdev
|| !netif_running(netdev
))
230 dev_info(&adapter
->pdev
->dev
, "Tx Ring Summary\n");
231 printk(KERN_INFO
"Queue [NTU] [NTC] [bi(ntc)->dma ]"
232 " leng ntw timestamp\n");
233 buffer_info
= &tx_ring
->buffer_info
[tx_ring
->next_to_clean
];
234 printk(KERN_INFO
" %5d %5X %5X %016llX %04X %3X %016llX\n",
235 0, tx_ring
->next_to_use
, tx_ring
->next_to_clean
,
236 (unsigned long long)buffer_info
->dma
,
238 buffer_info
->next_to_watch
,
239 (unsigned long long)buffer_info
->time_stamp
);
242 if (!netif_msg_tx_done(adapter
))
243 goto rx_ring_summary
;
245 dev_info(&adapter
->pdev
->dev
, "Tx Ring Dump\n");
247 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
249 * Legacy Transmit Descriptor
250 * +--------------------------------------------------------------+
251 * 0 | Buffer Address [63:0] (Reserved on Write Back) |
252 * +--------------------------------------------------------------+
253 * 8 | Special | CSS | Status | CMD | CSO | Length |
254 * +--------------------------------------------------------------+
255 * 63 48 47 36 35 32 31 24 23 16 15 0
257 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
258 * 63 48 47 40 39 32 31 16 15 8 7 0
259 * +----------------------------------------------------------------+
260 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
261 * +----------------------------------------------------------------+
262 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
263 * +----------------------------------------------------------------+
264 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
266 * Extended Data Descriptor (DTYP=0x1)
267 * +----------------------------------------------------------------+
268 * 0 | Buffer Address [63:0] |
269 * +----------------------------------------------------------------+
270 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
271 * +----------------------------------------------------------------+
272 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
274 printk(KERN_INFO
"Tl[desc] [address 63:0 ] [SpeCssSCmCsLen]"
275 " [bi->dma ] leng ntw timestamp bi->skb "
276 "<-- Legacy format\n");
277 printk(KERN_INFO
"Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen]"
278 " [bi->dma ] leng ntw timestamp bi->skb "
279 "<-- Ext Context format\n");
280 printk(KERN_INFO
"Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen]"
281 " [bi->dma ] leng ntw timestamp bi->skb "
282 "<-- Ext Data format\n");
283 for (i
= 0; tx_ring
->desc
&& (i
< tx_ring
->count
); i
++) {
284 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
285 buffer_info
= &tx_ring
->buffer_info
[i
];
286 u0
= (struct my_u0
*)tx_desc
;
287 printk(KERN_INFO
"T%c[0x%03X] %016llX %016llX %016llX "
288 "%04X %3X %016llX %p",
289 (!(le64_to_cpu(u0
->b
) & (1 << 29)) ? 'l' :
290 ((le64_to_cpu(u0
->b
) & (1 << 20)) ? 'd' : 'c')), i
,
291 (unsigned long long)le64_to_cpu(u0
->a
),
292 (unsigned long long)le64_to_cpu(u0
->b
),
293 (unsigned long long)buffer_info
->dma
,
294 buffer_info
->length
, buffer_info
->next_to_watch
,
295 (unsigned long long)buffer_info
->time_stamp
,
297 if (i
== tx_ring
->next_to_use
&& i
== tx_ring
->next_to_clean
)
298 printk(KERN_CONT
" NTC/U\n");
299 else if (i
== tx_ring
->next_to_use
)
300 printk(KERN_CONT
" NTU\n");
301 else if (i
== tx_ring
->next_to_clean
)
302 printk(KERN_CONT
" NTC\n");
304 printk(KERN_CONT
"\n");
306 if (netif_msg_pktdata(adapter
) && buffer_info
->dma
!= 0)
307 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_ADDRESS
,
308 16, 1, phys_to_virt(buffer_info
->dma
),
309 buffer_info
->length
, true);
312 /* Print Rx Ring Summary */
314 dev_info(&adapter
->pdev
->dev
, "Rx Ring Summary\n");
315 printk(KERN_INFO
"Queue [NTU] [NTC]\n");
316 printk(KERN_INFO
" %5d %5X %5X\n", 0,
317 rx_ring
->next_to_use
, rx_ring
->next_to_clean
);
320 if (!netif_msg_rx_status(adapter
))
323 dev_info(&adapter
->pdev
->dev
, "Rx Ring Dump\n");
324 switch (adapter
->rx_ps_pages
) {
328 /* [Extended] Packet Split Receive Descriptor Format
330 * +-----------------------------------------------------+
331 * 0 | Buffer Address 0 [63:0] |
332 * +-----------------------------------------------------+
333 * 8 | Buffer Address 1 [63:0] |
334 * +-----------------------------------------------------+
335 * 16 | Buffer Address 2 [63:0] |
336 * +-----------------------------------------------------+
337 * 24 | Buffer Address 3 [63:0] |
338 * +-----------------------------------------------------+
340 printk(KERN_INFO
"R [desc] [buffer 0 63:0 ] "
342 "[buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] "
343 "[bi->skb] <-- Ext Pkt Split format\n");
344 /* [Extended] Receive Descriptor (Write-Back) Format
346 * 63 48 47 32 31 13 12 8 7 4 3 0
347 * +------------------------------------------------------+
348 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
349 * | Checksum | Ident | | Queue | | Type |
350 * +------------------------------------------------------+
351 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
352 * +------------------------------------------------------+
353 * 63 48 47 32 31 20 19 0
355 printk(KERN_INFO
"RWB[desc] [ck ipid mrqhsh] "
357 "[ l3 l2 l1 hs] [reserved ] ---------------- "
358 "[bi->skb] <-- Ext Rx Write-Back format\n");
359 for (i
= 0; i
< rx_ring
->count
; i
++) {
360 buffer_info
= &rx_ring
->buffer_info
[i
];
361 rx_desc_ps
= E1000_RX_DESC_PS(*rx_ring
, i
);
362 u1
= (struct my_u1
*)rx_desc_ps
;
364 le32_to_cpu(rx_desc_ps
->wb
.middle
.status_error
);
365 if (staterr
& E1000_RXD_STAT_DD
) {
366 /* Descriptor Done */
367 printk(KERN_INFO
"RWB[0x%03X] %016llX "
368 "%016llX %016llX %016llX "
369 "---------------- %p", i
,
370 (unsigned long long)le64_to_cpu(u1
->a
),
371 (unsigned long long)le64_to_cpu(u1
->b
),
372 (unsigned long long)le64_to_cpu(u1
->c
),
373 (unsigned long long)le64_to_cpu(u1
->d
),
376 printk(KERN_INFO
"R [0x%03X] %016llX "
377 "%016llX %016llX %016llX %016llX %p", i
,
378 (unsigned long long)le64_to_cpu(u1
->a
),
379 (unsigned long long)le64_to_cpu(u1
->b
),
380 (unsigned long long)le64_to_cpu(u1
->c
),
381 (unsigned long long)le64_to_cpu(u1
->d
),
382 (unsigned long long)buffer_info
->dma
,
385 if (netif_msg_pktdata(adapter
))
386 print_hex_dump(KERN_INFO
, "",
387 DUMP_PREFIX_ADDRESS
, 16, 1,
388 phys_to_virt(buffer_info
->dma
),
389 adapter
->rx_ps_bsize0
, true);
392 if (i
== rx_ring
->next_to_use
)
393 printk(KERN_CONT
" NTU\n");
394 else if (i
== rx_ring
->next_to_clean
)
395 printk(KERN_CONT
" NTC\n");
397 printk(KERN_CONT
"\n");
402 /* Legacy Receive Descriptor Format
404 * +-----------------------------------------------------+
405 * | Buffer Address [63:0] |
406 * +-----------------------------------------------------+
407 * | VLAN Tag | Errors | Status 0 | Packet csum | Length |
408 * +-----------------------------------------------------+
409 * 63 48 47 40 39 32 31 16 15 0
411 printk(KERN_INFO
"Rl[desc] [address 63:0 ] "
412 "[vl er S cks ln] [bi->dma ] [bi->skb] "
413 "<-- Legacy format\n");
414 for (i
= 0; rx_ring
->desc
&& (i
< rx_ring
->count
); i
++) {
415 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
416 buffer_info
= &rx_ring
->buffer_info
[i
];
417 u0
= (struct my_u0
*)rx_desc
;
418 printk(KERN_INFO
"Rl[0x%03X] %016llX %016llX "
420 (unsigned long long)le64_to_cpu(u0
->a
),
421 (unsigned long long)le64_to_cpu(u0
->b
),
422 (unsigned long long)buffer_info
->dma
,
424 if (i
== rx_ring
->next_to_use
)
425 printk(KERN_CONT
" NTU\n");
426 else if (i
== rx_ring
->next_to_clean
)
427 printk(KERN_CONT
" NTC\n");
429 printk(KERN_CONT
"\n");
431 if (netif_msg_pktdata(adapter
))
432 print_hex_dump(KERN_INFO
, "",
435 phys_to_virt(buffer_info
->dma
),
436 adapter
->rx_buffer_len
, true);
445 * e1000_desc_unused - calculate if we have unused descriptors
447 static int e1000_desc_unused(struct e1000_ring
*ring
)
449 if (ring
->next_to_clean
> ring
->next_to_use
)
450 return ring
->next_to_clean
- ring
->next_to_use
- 1;
452 return ring
->count
+ ring
->next_to_clean
- ring
->next_to_use
- 1;
456 * e1000_receive_skb - helper function to handle Rx indications
457 * @adapter: board private structure
458 * @status: descriptor status field as written by hardware
459 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
460 * @skb: pointer to sk_buff to be indicated to stack
462 static void e1000_receive_skb(struct e1000_adapter
*adapter
,
463 struct net_device
*netdev
, struct sk_buff
*skb
,
464 u8 status
, __le16 vlan
)
466 u16 tag
= le16_to_cpu(vlan
);
467 skb
->protocol
= eth_type_trans(skb
, netdev
);
469 if (status
& E1000_RXD_STAT_VP
)
470 __vlan_hwaccel_put_tag(skb
, tag
);
472 napi_gro_receive(&adapter
->napi
, skb
);
476 * e1000_rx_checksum - Receive Checksum Offload
477 * @adapter: board private structure
478 * @status_err: receive descriptor status and error fields
479 * @csum: receive descriptor csum field
480 * @sk_buff: socket buffer with received data
482 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
483 u32 csum
, struct sk_buff
*skb
)
485 u16 status
= (u16
)status_err
;
486 u8 errors
= (u8
)(status_err
>> 24);
488 skb_checksum_none_assert(skb
);
490 /* Ignore Checksum bit is set */
491 if (status
& E1000_RXD_STAT_IXSM
)
493 /* TCP/UDP checksum error bit is set */
494 if (errors
& E1000_RXD_ERR_TCPE
) {
495 /* let the stack verify checksum errors */
496 adapter
->hw_csum_err
++;
500 /* TCP/UDP Checksum has not been calculated */
501 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
504 /* It must be a TCP or UDP packet with a valid checksum */
505 if (status
& E1000_RXD_STAT_TCPCS
) {
506 /* TCP checksum is good */
507 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
510 * IP fragment with UDP payload
511 * Hardware complements the payload checksum, so we undo it
512 * and then put the value in host order for further stack use.
514 __sum16 sum
= (__force __sum16
)htons(csum
);
515 skb
->csum
= csum_unfold(~sum
);
516 skb
->ip_summed
= CHECKSUM_COMPLETE
;
518 adapter
->hw_csum_good
++;
522 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
523 * @adapter: address of board private structure
525 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
528 struct net_device
*netdev
= adapter
->netdev
;
529 struct pci_dev
*pdev
= adapter
->pdev
;
530 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
531 struct e1000_rx_desc
*rx_desc
;
532 struct e1000_buffer
*buffer_info
;
535 unsigned int bufsz
= adapter
->rx_buffer_len
;
537 i
= rx_ring
->next_to_use
;
538 buffer_info
= &rx_ring
->buffer_info
[i
];
540 while (cleaned_count
--) {
541 skb
= buffer_info
->skb
;
547 skb
= netdev_alloc_skb_ip_align(netdev
, bufsz
);
549 /* Better luck next round */
550 adapter
->alloc_rx_buff_failed
++;
554 buffer_info
->skb
= skb
;
556 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
557 adapter
->rx_buffer_len
,
559 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
560 dev_err(&pdev
->dev
, "Rx DMA map failed\n");
561 adapter
->rx_dma_failed
++;
565 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
566 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
568 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
570 * Force memory writes to complete before letting h/w
571 * know there are new descriptors to fetch. (Only
572 * applicable for weak-ordered memory model archs,
576 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
579 if (i
== rx_ring
->count
)
581 buffer_info
= &rx_ring
->buffer_info
[i
];
584 rx_ring
->next_to_use
= i
;
588 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
589 * @adapter: address of board private structure
591 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
594 struct net_device
*netdev
= adapter
->netdev
;
595 struct pci_dev
*pdev
= adapter
->pdev
;
596 union e1000_rx_desc_packet_split
*rx_desc
;
597 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
598 struct e1000_buffer
*buffer_info
;
599 struct e1000_ps_page
*ps_page
;
603 i
= rx_ring
->next_to_use
;
604 buffer_info
= &rx_ring
->buffer_info
[i
];
606 while (cleaned_count
--) {
607 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
609 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
610 ps_page
= &buffer_info
->ps_pages
[j
];
611 if (j
>= adapter
->rx_ps_pages
) {
612 /* all unused desc entries get hw null ptr */
613 rx_desc
->read
.buffer_addr
[j
+ 1] =
617 if (!ps_page
->page
) {
618 ps_page
->page
= alloc_page(GFP_ATOMIC
);
619 if (!ps_page
->page
) {
620 adapter
->alloc_rx_buff_failed
++;
623 ps_page
->dma
= dma_map_page(&pdev
->dev
,
627 if (dma_mapping_error(&pdev
->dev
,
629 dev_err(&adapter
->pdev
->dev
,
630 "Rx DMA page map failed\n");
631 adapter
->rx_dma_failed
++;
636 * Refresh the desc even if buffer_addrs
637 * didn't change because each write-back
640 rx_desc
->read
.buffer_addr
[j
+ 1] =
641 cpu_to_le64(ps_page
->dma
);
644 skb
= netdev_alloc_skb_ip_align(netdev
,
645 adapter
->rx_ps_bsize0
);
648 adapter
->alloc_rx_buff_failed
++;
652 buffer_info
->skb
= skb
;
653 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
654 adapter
->rx_ps_bsize0
,
656 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
657 dev_err(&pdev
->dev
, "Rx DMA map failed\n");
658 adapter
->rx_dma_failed
++;
660 dev_kfree_skb_any(skb
);
661 buffer_info
->skb
= NULL
;
665 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
667 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
669 * Force memory writes to complete before letting h/w
670 * know there are new descriptors to fetch. (Only
671 * applicable for weak-ordered memory model archs,
675 writel(i
<< 1, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
679 if (i
== rx_ring
->count
)
681 buffer_info
= &rx_ring
->buffer_info
[i
];
685 rx_ring
->next_to_use
= i
;
689 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
690 * @adapter: address of board private structure
691 * @cleaned_count: number of buffers to allocate this pass
694 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter
*adapter
,
697 struct net_device
*netdev
= adapter
->netdev
;
698 struct pci_dev
*pdev
= adapter
->pdev
;
699 struct e1000_rx_desc
*rx_desc
;
700 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
701 struct e1000_buffer
*buffer_info
;
704 unsigned int bufsz
= 256 - 16 /* for skb_reserve */;
706 i
= rx_ring
->next_to_use
;
707 buffer_info
= &rx_ring
->buffer_info
[i
];
709 while (cleaned_count
--) {
710 skb
= buffer_info
->skb
;
716 skb
= netdev_alloc_skb_ip_align(netdev
, bufsz
);
717 if (unlikely(!skb
)) {
718 /* Better luck next round */
719 adapter
->alloc_rx_buff_failed
++;
723 buffer_info
->skb
= skb
;
725 /* allocate a new page if necessary */
726 if (!buffer_info
->page
) {
727 buffer_info
->page
= alloc_page(GFP_ATOMIC
);
728 if (unlikely(!buffer_info
->page
)) {
729 adapter
->alloc_rx_buff_failed
++;
734 if (!buffer_info
->dma
)
735 buffer_info
->dma
= dma_map_page(&pdev
->dev
,
736 buffer_info
->page
, 0,
740 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
741 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
743 if (unlikely(++i
== rx_ring
->count
))
745 buffer_info
= &rx_ring
->buffer_info
[i
];
748 if (likely(rx_ring
->next_to_use
!= i
)) {
749 rx_ring
->next_to_use
= i
;
750 if (unlikely(i
-- == 0))
751 i
= (rx_ring
->count
- 1);
753 /* Force memory writes to complete before letting h/w
754 * know there are new descriptors to fetch. (Only
755 * applicable for weak-ordered memory model archs,
758 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
763 * e1000_clean_rx_irq - Send received data up the network stack; legacy
764 * @adapter: board private structure
766 * the return value indicates whether actual cleaning was done, there
767 * is no guarantee that everything was cleaned
769 static bool e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
770 int *work_done
, int work_to_do
)
772 struct net_device
*netdev
= adapter
->netdev
;
773 struct pci_dev
*pdev
= adapter
->pdev
;
774 struct e1000_hw
*hw
= &adapter
->hw
;
775 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
776 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
777 struct e1000_buffer
*buffer_info
, *next_buffer
;
780 int cleaned_count
= 0;
782 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
784 i
= rx_ring
->next_to_clean
;
785 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
786 buffer_info
= &rx_ring
->buffer_info
[i
];
788 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
792 if (*work_done
>= work_to_do
)
795 rmb(); /* read descriptor and rx_buffer_info after status DD */
797 status
= rx_desc
->status
;
798 skb
= buffer_info
->skb
;
799 buffer_info
->skb
= NULL
;
801 prefetch(skb
->data
- NET_IP_ALIGN
);
804 if (i
== rx_ring
->count
)
806 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
809 next_buffer
= &rx_ring
->buffer_info
[i
];
813 dma_unmap_single(&pdev
->dev
,
815 adapter
->rx_buffer_len
,
817 buffer_info
->dma
= 0;
819 length
= le16_to_cpu(rx_desc
->length
);
822 * !EOP means multiple descriptors were used to store a single
823 * packet, if that's the case we need to toss it. In fact, we
824 * need to toss every packet with the EOP bit clear and the
825 * next frame that _does_ have the EOP bit set, as it is by
826 * definition only a frame fragment
828 if (unlikely(!(status
& E1000_RXD_STAT_EOP
)))
829 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
831 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
832 /* All receives must fit into a single buffer */
833 e_dbg("Receive packet consumed multiple buffers\n");
835 buffer_info
->skb
= skb
;
836 if (status
& E1000_RXD_STAT_EOP
)
837 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
841 if (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
) {
843 buffer_info
->skb
= skb
;
847 /* adjust length to remove Ethernet CRC */
848 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
851 total_rx_bytes
+= length
;
855 * code added for copybreak, this should improve
856 * performance for small packets with large amounts
857 * of reassembly being done in the stack
859 if (length
< copybreak
) {
860 struct sk_buff
*new_skb
=
861 netdev_alloc_skb_ip_align(netdev
, length
);
863 skb_copy_to_linear_data_offset(new_skb
,
869 /* save the skb in buffer_info as good */
870 buffer_info
->skb
= skb
;
873 /* else just continue with the old one */
875 /* end copybreak code */
876 skb_put(skb
, length
);
878 /* Receive Checksum Offload */
879 e1000_rx_checksum(adapter
,
881 ((u32
)(rx_desc
->errors
) << 24),
882 le16_to_cpu(rx_desc
->csum
), skb
);
884 e1000_receive_skb(adapter
, netdev
, skb
,status
,rx_desc
->special
);
889 /* return some buffers to hardware, one at a time is too slow */
890 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
891 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
895 /* use prefetched values */
897 buffer_info
= next_buffer
;
899 rx_ring
->next_to_clean
= i
;
901 cleaned_count
= e1000_desc_unused(rx_ring
);
903 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
905 adapter
->total_rx_bytes
+= total_rx_bytes
;
906 adapter
->total_rx_packets
+= total_rx_packets
;
910 static void e1000_put_txbuf(struct e1000_adapter
*adapter
,
911 struct e1000_buffer
*buffer_info
)
913 if (buffer_info
->dma
) {
914 if (buffer_info
->mapped_as_page
)
915 dma_unmap_page(&adapter
->pdev
->dev
, buffer_info
->dma
,
916 buffer_info
->length
, DMA_TO_DEVICE
);
918 dma_unmap_single(&adapter
->pdev
->dev
, buffer_info
->dma
,
919 buffer_info
->length
, DMA_TO_DEVICE
);
920 buffer_info
->dma
= 0;
922 if (buffer_info
->skb
) {
923 dev_kfree_skb_any(buffer_info
->skb
);
924 buffer_info
->skb
= NULL
;
926 buffer_info
->time_stamp
= 0;
929 static void e1000_print_hw_hang(struct work_struct
*work
)
931 struct e1000_adapter
*adapter
= container_of(work
,
932 struct e1000_adapter
,
934 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
935 unsigned int i
= tx_ring
->next_to_clean
;
936 unsigned int eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
937 struct e1000_tx_desc
*eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
938 struct e1000_hw
*hw
= &adapter
->hw
;
939 u16 phy_status
, phy_1000t_status
, phy_ext_status
;
942 if (test_bit(__E1000_DOWN
, &adapter
->state
))
945 e1e_rphy(hw
, PHY_STATUS
, &phy_status
);
946 e1e_rphy(hw
, PHY_1000T_STATUS
, &phy_1000t_status
);
947 e1e_rphy(hw
, PHY_EXT_STATUS
, &phy_ext_status
);
949 pci_read_config_word(adapter
->pdev
, PCI_STATUS
, &pci_status
);
951 /* detected Hardware unit hang */
952 e_err("Detected Hardware Unit Hang:\n"
955 " next_to_use <%x>\n"
956 " next_to_clean <%x>\n"
957 "buffer_info[next_to_clean]:\n"
958 " time_stamp <%lx>\n"
959 " next_to_watch <%x>\n"
961 " next_to_watch.status <%x>\n"
964 "PHY 1000BASE-T Status <%x>\n"
965 "PHY Extended Status <%x>\n"
967 readl(adapter
->hw
.hw_addr
+ tx_ring
->head
),
968 readl(adapter
->hw
.hw_addr
+ tx_ring
->tail
),
969 tx_ring
->next_to_use
,
970 tx_ring
->next_to_clean
,
971 tx_ring
->buffer_info
[eop
].time_stamp
,
974 eop_desc
->upper
.fields
.status
,
983 * e1000_clean_tx_irq - Reclaim resources after transmit completes
984 * @adapter: board private structure
986 * the return value indicates whether actual cleaning was done, there
987 * is no guarantee that everything was cleaned
989 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
)
991 struct net_device
*netdev
= adapter
->netdev
;
992 struct e1000_hw
*hw
= &adapter
->hw
;
993 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
994 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
995 struct e1000_buffer
*buffer_info
;
997 unsigned int count
= 0;
998 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
1000 i
= tx_ring
->next_to_clean
;
1001 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1002 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1004 while ((eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
1005 (count
< tx_ring
->count
)) {
1006 bool cleaned
= false;
1007 rmb(); /* read buffer_info after eop_desc */
1008 for (; !cleaned
; count
++) {
1009 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
1010 buffer_info
= &tx_ring
->buffer_info
[i
];
1011 cleaned
= (i
== eop
);
1014 total_tx_packets
+= buffer_info
->segs
;
1015 total_tx_bytes
+= buffer_info
->bytecount
;
1018 e1000_put_txbuf(adapter
, buffer_info
);
1019 tx_desc
->upper
.data
= 0;
1022 if (i
== tx_ring
->count
)
1026 if (i
== tx_ring
->next_to_use
)
1028 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1029 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1032 tx_ring
->next_to_clean
= i
;
1034 #define TX_WAKE_THRESHOLD 32
1035 if (count
&& netif_carrier_ok(netdev
) &&
1036 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
1037 /* Make sure that anybody stopping the queue after this
1038 * sees the new next_to_clean.
1042 if (netif_queue_stopped(netdev
) &&
1043 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
1044 netif_wake_queue(netdev
);
1045 ++adapter
->restart_queue
;
1049 if (adapter
->detect_tx_hung
) {
1051 * Detect a transmit hang in hardware, this serializes the
1052 * check with the clearing of time_stamp and movement of i
1054 adapter
->detect_tx_hung
= 0;
1055 if (tx_ring
->buffer_info
[i
].time_stamp
&&
1056 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
1057 + (adapter
->tx_timeout_factor
* HZ
)) &&
1058 !(er32(STATUS
) & E1000_STATUS_TXOFF
)) {
1059 schedule_work(&adapter
->print_hang_task
);
1060 netif_stop_queue(netdev
);
1063 adapter
->total_tx_bytes
+= total_tx_bytes
;
1064 adapter
->total_tx_packets
+= total_tx_packets
;
1065 return count
< tx_ring
->count
;
1069 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
1070 * @adapter: board private structure
1072 * the return value indicates whether actual cleaning was done, there
1073 * is no guarantee that everything was cleaned
1075 static bool e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
1076 int *work_done
, int work_to_do
)
1078 struct e1000_hw
*hw
= &adapter
->hw
;
1079 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
1080 struct net_device
*netdev
= adapter
->netdev
;
1081 struct pci_dev
*pdev
= adapter
->pdev
;
1082 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1083 struct e1000_buffer
*buffer_info
, *next_buffer
;
1084 struct e1000_ps_page
*ps_page
;
1085 struct sk_buff
*skb
;
1087 u32 length
, staterr
;
1088 int cleaned_count
= 0;
1090 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
1092 i
= rx_ring
->next_to_clean
;
1093 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
1094 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1095 buffer_info
= &rx_ring
->buffer_info
[i
];
1097 while (staterr
& E1000_RXD_STAT_DD
) {
1098 if (*work_done
>= work_to_do
)
1101 skb
= buffer_info
->skb
;
1102 rmb(); /* read descriptor and rx_buffer_info after status DD */
1104 /* in the packet split case this is header only */
1105 prefetch(skb
->data
- NET_IP_ALIGN
);
1108 if (i
== rx_ring
->count
)
1110 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
1113 next_buffer
= &rx_ring
->buffer_info
[i
];
1117 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1118 adapter
->rx_ps_bsize0
, DMA_FROM_DEVICE
);
1119 buffer_info
->dma
= 0;
1121 /* see !EOP comment in other Rx routine */
1122 if (!(staterr
& E1000_RXD_STAT_EOP
))
1123 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
1125 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
1126 e_dbg("Packet Split buffers didn't pick up the full "
1128 dev_kfree_skb_irq(skb
);
1129 if (staterr
& E1000_RXD_STAT_EOP
)
1130 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1134 if (staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) {
1135 dev_kfree_skb_irq(skb
);
1139 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
1142 e_dbg("Last part of the packet spanning multiple "
1144 dev_kfree_skb_irq(skb
);
1149 skb_put(skb
, length
);
1153 * this looks ugly, but it seems compiler issues make it
1154 * more efficient than reusing j
1156 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
1159 * page alloc/put takes too long and effects small packet
1160 * throughput, so unsplit small packets and save the alloc/put
1161 * only valid in softirq (napi) context to call kmap_*
1163 if (l1
&& (l1
<= copybreak
) &&
1164 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
1167 ps_page
= &buffer_info
->ps_pages
[0];
1170 * there is no documentation about how to call
1171 * kmap_atomic, so we can't hold the mapping
1174 dma_sync_single_for_cpu(&pdev
->dev
, ps_page
->dma
,
1175 PAGE_SIZE
, DMA_FROM_DEVICE
);
1176 vaddr
= kmap_atomic(ps_page
->page
, KM_SKB_DATA_SOFTIRQ
);
1177 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
1178 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
1179 dma_sync_single_for_device(&pdev
->dev
, ps_page
->dma
,
1180 PAGE_SIZE
, DMA_FROM_DEVICE
);
1182 /* remove the CRC */
1183 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
1191 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1192 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
1196 ps_page
= &buffer_info
->ps_pages
[j
];
1197 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1200 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
1201 ps_page
->page
= NULL
;
1203 skb
->data_len
+= length
;
1204 skb
->truesize
+= length
;
1207 /* strip the ethernet crc, problem is we're using pages now so
1208 * this whole operation can get a little cpu intensive
1210 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
1211 pskb_trim(skb
, skb
->len
- 4);
1214 total_rx_bytes
+= skb
->len
;
1217 e1000_rx_checksum(adapter
, staterr
, le16_to_cpu(
1218 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
1220 if (rx_desc
->wb
.upper
.header_status
&
1221 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
1222 adapter
->rx_hdr_split
++;
1224 e1000_receive_skb(adapter
, netdev
, skb
,
1225 staterr
, rx_desc
->wb
.middle
.vlan
);
1228 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
1229 buffer_info
->skb
= NULL
;
1231 /* return some buffers to hardware, one at a time is too slow */
1232 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
1233 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1237 /* use prefetched values */
1239 buffer_info
= next_buffer
;
1241 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1243 rx_ring
->next_to_clean
= i
;
1245 cleaned_count
= e1000_desc_unused(rx_ring
);
1247 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1249 adapter
->total_rx_bytes
+= total_rx_bytes
;
1250 adapter
->total_rx_packets
+= total_rx_packets
;
1255 * e1000_consume_page - helper function
1257 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
1262 skb
->data_len
+= length
;
1263 skb
->truesize
+= length
;
1267 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1268 * @adapter: board private structure
1270 * the return value indicates whether actual cleaning was done, there
1271 * is no guarantee that everything was cleaned
1274 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter
*adapter
,
1275 int *work_done
, int work_to_do
)
1277 struct net_device
*netdev
= adapter
->netdev
;
1278 struct pci_dev
*pdev
= adapter
->pdev
;
1279 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1280 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
1281 struct e1000_buffer
*buffer_info
, *next_buffer
;
1284 int cleaned_count
= 0;
1285 bool cleaned
= false;
1286 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
1288 i
= rx_ring
->next_to_clean
;
1289 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
1290 buffer_info
= &rx_ring
->buffer_info
[i
];
1292 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
1293 struct sk_buff
*skb
;
1296 if (*work_done
>= work_to_do
)
1299 rmb(); /* read descriptor and rx_buffer_info after status DD */
1301 status
= rx_desc
->status
;
1302 skb
= buffer_info
->skb
;
1303 buffer_info
->skb
= NULL
;
1306 if (i
== rx_ring
->count
)
1308 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
1311 next_buffer
= &rx_ring
->buffer_info
[i
];
1315 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
, PAGE_SIZE
,
1317 buffer_info
->dma
= 0;
1319 length
= le16_to_cpu(rx_desc
->length
);
1321 /* errors is only valid for DD + EOP descriptors */
1322 if (unlikely((status
& E1000_RXD_STAT_EOP
) &&
1323 (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
))) {
1324 /* recycle both page and skb */
1325 buffer_info
->skb
= skb
;
1326 /* an error means any chain goes out the window
1328 if (rx_ring
->rx_skb_top
)
1329 dev_kfree_skb_irq(rx_ring
->rx_skb_top
);
1330 rx_ring
->rx_skb_top
= NULL
;
1334 #define rxtop (rx_ring->rx_skb_top)
1335 if (!(status
& E1000_RXD_STAT_EOP
)) {
1336 /* this descriptor is only the beginning (or middle) */
1338 /* this is the beginning of a chain */
1340 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
1343 /* this is the middle of a chain */
1344 skb_fill_page_desc(rxtop
,
1345 skb_shinfo(rxtop
)->nr_frags
,
1346 buffer_info
->page
, 0, length
);
1347 /* re-use the skb, only consumed the page */
1348 buffer_info
->skb
= skb
;
1350 e1000_consume_page(buffer_info
, rxtop
, length
);
1354 /* end of the chain */
1355 skb_fill_page_desc(rxtop
,
1356 skb_shinfo(rxtop
)->nr_frags
,
1357 buffer_info
->page
, 0, length
);
1358 /* re-use the current skb, we only consumed the
1360 buffer_info
->skb
= skb
;
1363 e1000_consume_page(buffer_info
, skb
, length
);
1365 /* no chain, got EOP, this buf is the packet
1366 * copybreak to save the put_page/alloc_page */
1367 if (length
<= copybreak
&&
1368 skb_tailroom(skb
) >= length
) {
1370 vaddr
= kmap_atomic(buffer_info
->page
,
1371 KM_SKB_DATA_SOFTIRQ
);
1372 memcpy(skb_tail_pointer(skb
), vaddr
,
1374 kunmap_atomic(vaddr
,
1375 KM_SKB_DATA_SOFTIRQ
);
1376 /* re-use the page, so don't erase
1377 * buffer_info->page */
1378 skb_put(skb
, length
);
1380 skb_fill_page_desc(skb
, 0,
1381 buffer_info
->page
, 0,
1383 e1000_consume_page(buffer_info
, skb
,
1389 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1390 e1000_rx_checksum(adapter
,
1392 ((u32
)(rx_desc
->errors
) << 24),
1393 le16_to_cpu(rx_desc
->csum
), skb
);
1395 /* probably a little skewed due to removing CRC */
1396 total_rx_bytes
+= skb
->len
;
1399 /* eth type trans needs skb->data to point to something */
1400 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1401 e_err("pskb_may_pull failed.\n");
1402 dev_kfree_skb_irq(skb
);
1406 e1000_receive_skb(adapter
, netdev
, skb
, status
,
1410 rx_desc
->status
= 0;
1412 /* return some buffers to hardware, one at a time is too slow */
1413 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1414 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1418 /* use prefetched values */
1420 buffer_info
= next_buffer
;
1422 rx_ring
->next_to_clean
= i
;
1424 cleaned_count
= e1000_desc_unused(rx_ring
);
1426 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1428 adapter
->total_rx_bytes
+= total_rx_bytes
;
1429 adapter
->total_rx_packets
+= total_rx_packets
;
1434 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1435 * @adapter: board private structure
1437 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
)
1439 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1440 struct e1000_buffer
*buffer_info
;
1441 struct e1000_ps_page
*ps_page
;
1442 struct pci_dev
*pdev
= adapter
->pdev
;
1445 /* Free all the Rx ring sk_buffs */
1446 for (i
= 0; i
< rx_ring
->count
; i
++) {
1447 buffer_info
= &rx_ring
->buffer_info
[i
];
1448 if (buffer_info
->dma
) {
1449 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1450 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1451 adapter
->rx_buffer_len
,
1453 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1454 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
,
1457 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1458 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1459 adapter
->rx_ps_bsize0
,
1461 buffer_info
->dma
= 0;
1464 if (buffer_info
->page
) {
1465 put_page(buffer_info
->page
);
1466 buffer_info
->page
= NULL
;
1469 if (buffer_info
->skb
) {
1470 dev_kfree_skb(buffer_info
->skb
);
1471 buffer_info
->skb
= NULL
;
1474 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1475 ps_page
= &buffer_info
->ps_pages
[j
];
1478 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1481 put_page(ps_page
->page
);
1482 ps_page
->page
= NULL
;
1486 /* there also may be some cached data from a chained receive */
1487 if (rx_ring
->rx_skb_top
) {
1488 dev_kfree_skb(rx_ring
->rx_skb_top
);
1489 rx_ring
->rx_skb_top
= NULL
;
1492 /* Zero out the descriptor ring */
1493 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1495 rx_ring
->next_to_clean
= 0;
1496 rx_ring
->next_to_use
= 0;
1497 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1499 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
1500 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
1503 static void e1000e_downshift_workaround(struct work_struct
*work
)
1505 struct e1000_adapter
*adapter
= container_of(work
,
1506 struct e1000_adapter
, downshift_task
);
1508 if (test_bit(__E1000_DOWN
, &adapter
->state
))
1511 e1000e_gig_downshift_workaround_ich8lan(&adapter
->hw
);
1515 * e1000_intr_msi - Interrupt Handler
1516 * @irq: interrupt number
1517 * @data: pointer to a network interface device structure
1519 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
1521 struct net_device
*netdev
= data
;
1522 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1523 struct e1000_hw
*hw
= &adapter
->hw
;
1524 u32 icr
= er32(ICR
);
1527 * read ICR disables interrupts using IAM
1530 if (icr
& E1000_ICR_LSC
) {
1531 hw
->mac
.get_link_status
= 1;
1533 * ICH8 workaround-- Call gig speed drop workaround on cable
1534 * disconnect (LSC) before accessing any PHY registers
1536 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1537 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1538 schedule_work(&adapter
->downshift_task
);
1541 * 80003ES2LAN workaround-- For packet buffer work-around on
1542 * link down event; disable receives here in the ISR and reset
1543 * adapter in watchdog
1545 if (netif_carrier_ok(netdev
) &&
1546 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1547 /* disable receives */
1548 u32 rctl
= er32(RCTL
);
1549 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1550 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1552 /* guard against interrupt when we're going down */
1553 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1554 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1557 if (napi_schedule_prep(&adapter
->napi
)) {
1558 adapter
->total_tx_bytes
= 0;
1559 adapter
->total_tx_packets
= 0;
1560 adapter
->total_rx_bytes
= 0;
1561 adapter
->total_rx_packets
= 0;
1562 __napi_schedule(&adapter
->napi
);
1569 * e1000_intr - Interrupt Handler
1570 * @irq: interrupt number
1571 * @data: pointer to a network interface device structure
1573 static irqreturn_t
e1000_intr(int irq
, void *data
)
1575 struct net_device
*netdev
= data
;
1576 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1577 struct e1000_hw
*hw
= &adapter
->hw
;
1578 u32 rctl
, icr
= er32(ICR
);
1580 if (!icr
|| test_bit(__E1000_DOWN
, &adapter
->state
))
1581 return IRQ_NONE
; /* Not our interrupt */
1584 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1585 * not set, then the adapter didn't send an interrupt
1587 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1591 * Interrupt Auto-Mask...upon reading ICR,
1592 * interrupts are masked. No need for the
1596 if (icr
& E1000_ICR_LSC
) {
1597 hw
->mac
.get_link_status
= 1;
1599 * ICH8 workaround-- Call gig speed drop workaround on cable
1600 * disconnect (LSC) before accessing any PHY registers
1602 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1603 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1604 schedule_work(&adapter
->downshift_task
);
1607 * 80003ES2LAN workaround--
1608 * For packet buffer work-around on link down event;
1609 * disable receives here in the ISR and
1610 * reset adapter in watchdog
1612 if (netif_carrier_ok(netdev
) &&
1613 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1614 /* disable receives */
1616 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1617 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1619 /* guard against interrupt when we're going down */
1620 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1621 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1624 if (napi_schedule_prep(&adapter
->napi
)) {
1625 adapter
->total_tx_bytes
= 0;
1626 adapter
->total_tx_packets
= 0;
1627 adapter
->total_rx_bytes
= 0;
1628 adapter
->total_rx_packets
= 0;
1629 __napi_schedule(&adapter
->napi
);
1635 static irqreturn_t
e1000_msix_other(int irq
, void *data
)
1637 struct net_device
*netdev
= data
;
1638 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1639 struct e1000_hw
*hw
= &adapter
->hw
;
1640 u32 icr
= er32(ICR
);
1642 if (!(icr
& E1000_ICR_INT_ASSERTED
)) {
1643 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1644 ew32(IMS
, E1000_IMS_OTHER
);
1648 if (icr
& adapter
->eiac_mask
)
1649 ew32(ICS
, (icr
& adapter
->eiac_mask
));
1651 if (icr
& E1000_ICR_OTHER
) {
1652 if (!(icr
& E1000_ICR_LSC
))
1653 goto no_link_interrupt
;
1654 hw
->mac
.get_link_status
= 1;
1655 /* guard against interrupt when we're going down */
1656 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1657 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1661 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1662 ew32(IMS
, E1000_IMS_LSC
| E1000_IMS_OTHER
);
1668 static irqreturn_t
e1000_intr_msix_tx(int irq
, void *data
)
1670 struct net_device
*netdev
= data
;
1671 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1672 struct e1000_hw
*hw
= &adapter
->hw
;
1673 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1676 adapter
->total_tx_bytes
= 0;
1677 adapter
->total_tx_packets
= 0;
1679 if (!e1000_clean_tx_irq(adapter
))
1680 /* Ring was not completely cleaned, so fire another interrupt */
1681 ew32(ICS
, tx_ring
->ims_val
);
1686 static irqreturn_t
e1000_intr_msix_rx(int irq
, void *data
)
1688 struct net_device
*netdev
= data
;
1689 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1691 /* Write the ITR value calculated at the end of the
1692 * previous interrupt.
1694 if (adapter
->rx_ring
->set_itr
) {
1695 writel(1000000000 / (adapter
->rx_ring
->itr_val
* 256),
1696 adapter
->hw
.hw_addr
+ adapter
->rx_ring
->itr_register
);
1697 adapter
->rx_ring
->set_itr
= 0;
1700 if (napi_schedule_prep(&adapter
->napi
)) {
1701 adapter
->total_rx_bytes
= 0;
1702 adapter
->total_rx_packets
= 0;
1703 __napi_schedule(&adapter
->napi
);
1709 * e1000_configure_msix - Configure MSI-X hardware
1711 * e1000_configure_msix sets up the hardware to properly
1712 * generate MSI-X interrupts.
1714 static void e1000_configure_msix(struct e1000_adapter
*adapter
)
1716 struct e1000_hw
*hw
= &adapter
->hw
;
1717 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1718 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1720 u32 ctrl_ext
, ivar
= 0;
1722 adapter
->eiac_mask
= 0;
1724 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1725 if (hw
->mac
.type
== e1000_82574
) {
1726 u32 rfctl
= er32(RFCTL
);
1727 rfctl
|= E1000_RFCTL_ACK_DIS
;
1731 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1732 /* Configure Rx vector */
1733 rx_ring
->ims_val
= E1000_IMS_RXQ0
;
1734 adapter
->eiac_mask
|= rx_ring
->ims_val
;
1735 if (rx_ring
->itr_val
)
1736 writel(1000000000 / (rx_ring
->itr_val
* 256),
1737 hw
->hw_addr
+ rx_ring
->itr_register
);
1739 writel(1, hw
->hw_addr
+ rx_ring
->itr_register
);
1740 ivar
= E1000_IVAR_INT_ALLOC_VALID
| vector
;
1742 /* Configure Tx vector */
1743 tx_ring
->ims_val
= E1000_IMS_TXQ0
;
1745 if (tx_ring
->itr_val
)
1746 writel(1000000000 / (tx_ring
->itr_val
* 256),
1747 hw
->hw_addr
+ tx_ring
->itr_register
);
1749 writel(1, hw
->hw_addr
+ tx_ring
->itr_register
);
1750 adapter
->eiac_mask
|= tx_ring
->ims_val
;
1751 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 8);
1753 /* set vector for Other Causes, e.g. link changes */
1755 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 16);
1756 if (rx_ring
->itr_val
)
1757 writel(1000000000 / (rx_ring
->itr_val
* 256),
1758 hw
->hw_addr
+ E1000_EITR_82574(vector
));
1760 writel(1, hw
->hw_addr
+ E1000_EITR_82574(vector
));
1762 /* Cause Tx interrupts on every write back */
1767 /* enable MSI-X PBA support */
1768 ctrl_ext
= er32(CTRL_EXT
);
1769 ctrl_ext
|= E1000_CTRL_EXT_PBA_CLR
;
1771 /* Auto-Mask Other interrupts upon ICR read */
1772 #define E1000_EIAC_MASK_82574 0x01F00000
1773 ew32(IAM
, ~E1000_EIAC_MASK_82574
| E1000_IMS_OTHER
);
1774 ctrl_ext
|= E1000_CTRL_EXT_EIAME
;
1775 ew32(CTRL_EXT
, ctrl_ext
);
1779 void e1000e_reset_interrupt_capability(struct e1000_adapter
*adapter
)
1781 if (adapter
->msix_entries
) {
1782 pci_disable_msix(adapter
->pdev
);
1783 kfree(adapter
->msix_entries
);
1784 adapter
->msix_entries
= NULL
;
1785 } else if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1786 pci_disable_msi(adapter
->pdev
);
1787 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
1792 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1794 * Attempt to configure interrupts using the best available
1795 * capabilities of the hardware and kernel.
1797 void e1000e_set_interrupt_capability(struct e1000_adapter
*adapter
)
1802 switch (adapter
->int_mode
) {
1803 case E1000E_INT_MODE_MSIX
:
1804 if (adapter
->flags
& FLAG_HAS_MSIX
) {
1805 adapter
->num_vectors
= 3; /* RxQ0, TxQ0 and other */
1806 adapter
->msix_entries
= kcalloc(adapter
->num_vectors
,
1807 sizeof(struct msix_entry
),
1809 if (adapter
->msix_entries
) {
1810 for (i
= 0; i
< adapter
->num_vectors
; i
++)
1811 adapter
->msix_entries
[i
].entry
= i
;
1813 err
= pci_enable_msix(adapter
->pdev
,
1814 adapter
->msix_entries
,
1815 adapter
->num_vectors
);
1819 /* MSI-X failed, so fall through and try MSI */
1820 e_err("Failed to initialize MSI-X interrupts. "
1821 "Falling back to MSI interrupts.\n");
1822 e1000e_reset_interrupt_capability(adapter
);
1824 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1826 case E1000E_INT_MODE_MSI
:
1827 if (!pci_enable_msi(adapter
->pdev
)) {
1828 adapter
->flags
|= FLAG_MSI_ENABLED
;
1830 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1831 e_err("Failed to initialize MSI interrupts. Falling "
1832 "back to legacy interrupts.\n");
1835 case E1000E_INT_MODE_LEGACY
:
1836 /* Don't do anything; this is the system default */
1840 /* store the number of vectors being used */
1841 adapter
->num_vectors
= 1;
1845 * e1000_request_msix - Initialize MSI-X interrupts
1847 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1850 static int e1000_request_msix(struct e1000_adapter
*adapter
)
1852 struct net_device
*netdev
= adapter
->netdev
;
1853 int err
= 0, vector
= 0;
1855 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1856 snprintf(adapter
->rx_ring
->name
,
1857 sizeof(adapter
->rx_ring
->name
) - 1,
1858 "%s-rx-0", netdev
->name
);
1860 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1861 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1862 e1000_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
1866 adapter
->rx_ring
->itr_register
= E1000_EITR_82574(vector
);
1867 adapter
->rx_ring
->itr_val
= adapter
->itr
;
1870 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1871 snprintf(adapter
->tx_ring
->name
,
1872 sizeof(adapter
->tx_ring
->name
) - 1,
1873 "%s-tx-0", netdev
->name
);
1875 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1876 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1877 e1000_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
1881 adapter
->tx_ring
->itr_register
= E1000_EITR_82574(vector
);
1882 adapter
->tx_ring
->itr_val
= adapter
->itr
;
1885 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1886 e1000_msix_other
, 0, netdev
->name
, netdev
);
1890 e1000_configure_msix(adapter
);
1897 * e1000_request_irq - initialize interrupts
1899 * Attempts to configure interrupts using the best available
1900 * capabilities of the hardware and kernel.
1902 static int e1000_request_irq(struct e1000_adapter
*adapter
)
1904 struct net_device
*netdev
= adapter
->netdev
;
1907 if (adapter
->msix_entries
) {
1908 err
= e1000_request_msix(adapter
);
1911 /* fall back to MSI */
1912 e1000e_reset_interrupt_capability(adapter
);
1913 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1914 e1000e_set_interrupt_capability(adapter
);
1916 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1917 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi
, 0,
1918 netdev
->name
, netdev
);
1922 /* fall back to legacy interrupt */
1923 e1000e_reset_interrupt_capability(adapter
);
1924 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1927 err
= request_irq(adapter
->pdev
->irq
, e1000_intr
, IRQF_SHARED
,
1928 netdev
->name
, netdev
);
1930 e_err("Unable to allocate interrupt, Error: %d\n", err
);
1935 static void e1000_free_irq(struct e1000_adapter
*adapter
)
1937 struct net_device
*netdev
= adapter
->netdev
;
1939 if (adapter
->msix_entries
) {
1942 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1945 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1948 /* Other Causes interrupt vector */
1949 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1953 free_irq(adapter
->pdev
->irq
, netdev
);
1957 * e1000_irq_disable - Mask off interrupt generation on the NIC
1959 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
1961 struct e1000_hw
*hw
= &adapter
->hw
;
1964 if (adapter
->msix_entries
)
1965 ew32(EIAC_82574
, 0);
1968 if (adapter
->msix_entries
) {
1970 for (i
= 0; i
< adapter
->num_vectors
; i
++)
1971 synchronize_irq(adapter
->msix_entries
[i
].vector
);
1973 synchronize_irq(adapter
->pdev
->irq
);
1978 * e1000_irq_enable - Enable default interrupt generation settings
1980 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
1982 struct e1000_hw
*hw
= &adapter
->hw
;
1984 if (adapter
->msix_entries
) {
1985 ew32(EIAC_82574
, adapter
->eiac_mask
& E1000_EIAC_MASK_82574
);
1986 ew32(IMS
, adapter
->eiac_mask
| E1000_IMS_OTHER
| E1000_IMS_LSC
);
1988 ew32(IMS
, IMS_ENABLE_MASK
);
1994 * e1000e_get_hw_control - get control of the h/w from f/w
1995 * @adapter: address of board private structure
1997 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1998 * For ASF and Pass Through versions of f/w this means that
1999 * the driver is loaded. For AMT version (only with 82573)
2000 * of the f/w this means that the network i/f is open.
2002 void e1000e_get_hw_control(struct e1000_adapter
*adapter
)
2004 struct e1000_hw
*hw
= &adapter
->hw
;
2008 /* Let firmware know the driver has taken over */
2009 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2011 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
2012 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2013 ctrl_ext
= er32(CTRL_EXT
);
2014 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
2019 * e1000e_release_hw_control - release control of the h/w to f/w
2020 * @adapter: address of board private structure
2022 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2023 * For ASF and Pass Through versions of f/w this means that the
2024 * driver is no longer loaded. For AMT version (only with 82573) i
2025 * of the f/w this means that the network i/f is closed.
2028 void e1000e_release_hw_control(struct e1000_adapter
*adapter
)
2030 struct e1000_hw
*hw
= &adapter
->hw
;
2034 /* Let firmware taken over control of h/w */
2035 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2037 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
2038 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2039 ctrl_ext
= er32(CTRL_EXT
);
2040 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
2045 * @e1000_alloc_ring - allocate memory for a ring structure
2047 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
2048 struct e1000_ring
*ring
)
2050 struct pci_dev
*pdev
= adapter
->pdev
;
2052 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
2061 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
2062 * @adapter: board private structure
2064 * Return 0 on success, negative on failure
2066 int e1000e_setup_tx_resources(struct e1000_adapter
*adapter
)
2068 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2069 int err
= -ENOMEM
, size
;
2071 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2072 tx_ring
->buffer_info
= vzalloc(size
);
2073 if (!tx_ring
->buffer_info
)
2076 /* round up to nearest 4K */
2077 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2078 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
2080 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
2084 tx_ring
->next_to_use
= 0;
2085 tx_ring
->next_to_clean
= 0;
2089 vfree(tx_ring
->buffer_info
);
2090 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2095 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
2096 * @adapter: board private structure
2098 * Returns 0 on success, negative on failure
2100 int e1000e_setup_rx_resources(struct e1000_adapter
*adapter
)
2102 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2103 struct e1000_buffer
*buffer_info
;
2104 int i
, size
, desc_len
, err
= -ENOMEM
;
2106 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2107 rx_ring
->buffer_info
= vzalloc(size
);
2108 if (!rx_ring
->buffer_info
)
2111 for (i
= 0; i
< rx_ring
->count
; i
++) {
2112 buffer_info
= &rx_ring
->buffer_info
[i
];
2113 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
2114 sizeof(struct e1000_ps_page
),
2116 if (!buffer_info
->ps_pages
)
2120 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
2122 /* Round up to nearest 4K */
2123 rx_ring
->size
= rx_ring
->count
* desc_len
;
2124 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
2126 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
2130 rx_ring
->next_to_clean
= 0;
2131 rx_ring
->next_to_use
= 0;
2132 rx_ring
->rx_skb_top
= NULL
;
2137 for (i
= 0; i
< rx_ring
->count
; i
++) {
2138 buffer_info
= &rx_ring
->buffer_info
[i
];
2139 kfree(buffer_info
->ps_pages
);
2142 vfree(rx_ring
->buffer_info
);
2143 e_err("Unable to allocate memory for the receive descriptor ring\n");
2148 * e1000_clean_tx_ring - Free Tx Buffers
2149 * @adapter: board private structure
2151 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
)
2153 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2154 struct e1000_buffer
*buffer_info
;
2158 for (i
= 0; i
< tx_ring
->count
; i
++) {
2159 buffer_info
= &tx_ring
->buffer_info
[i
];
2160 e1000_put_txbuf(adapter
, buffer_info
);
2163 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2164 memset(tx_ring
->buffer_info
, 0, size
);
2166 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2168 tx_ring
->next_to_use
= 0;
2169 tx_ring
->next_to_clean
= 0;
2171 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
2172 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
2176 * e1000e_free_tx_resources - Free Tx Resources per Queue
2177 * @adapter: board private structure
2179 * Free all transmit software resources
2181 void e1000e_free_tx_resources(struct e1000_adapter
*adapter
)
2183 struct pci_dev
*pdev
= adapter
->pdev
;
2184 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2186 e1000_clean_tx_ring(adapter
);
2188 vfree(tx_ring
->buffer_info
);
2189 tx_ring
->buffer_info
= NULL
;
2191 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
2193 tx_ring
->desc
= NULL
;
2197 * e1000e_free_rx_resources - Free Rx Resources
2198 * @adapter: board private structure
2200 * Free all receive software resources
2203 void e1000e_free_rx_resources(struct e1000_adapter
*adapter
)
2205 struct pci_dev
*pdev
= adapter
->pdev
;
2206 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2209 e1000_clean_rx_ring(adapter
);
2211 for (i
= 0; i
< rx_ring
->count
; i
++)
2212 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
2214 vfree(rx_ring
->buffer_info
);
2215 rx_ring
->buffer_info
= NULL
;
2217 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
2219 rx_ring
->desc
= NULL
;
2223 * e1000_update_itr - update the dynamic ITR value based on statistics
2224 * @adapter: pointer to adapter
2225 * @itr_setting: current adapter->itr
2226 * @packets: the number of packets during this measurement interval
2227 * @bytes: the number of bytes during this measurement interval
2229 * Stores a new ITR value based on packets and byte
2230 * counts during the last interrupt. The advantage of per interrupt
2231 * computation is faster updates and more accurate ITR for the current
2232 * traffic pattern. Constants in this function were computed
2233 * based on theoretical maximum wire speed and thresholds were set based
2234 * on testing data as well as attempting to minimize response time
2235 * while increasing bulk throughput. This functionality is controlled
2236 * by the InterruptThrottleRate module parameter.
2238 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
2239 u16 itr_setting
, int packets
,
2242 unsigned int retval
= itr_setting
;
2245 goto update_itr_done
;
2247 switch (itr_setting
) {
2248 case lowest_latency
:
2249 /* handle TSO and jumbo frames */
2250 if (bytes
/packets
> 8000)
2251 retval
= bulk_latency
;
2252 else if ((packets
< 5) && (bytes
> 512))
2253 retval
= low_latency
;
2255 case low_latency
: /* 50 usec aka 20000 ints/s */
2256 if (bytes
> 10000) {
2257 /* this if handles the TSO accounting */
2258 if (bytes
/packets
> 8000)
2259 retval
= bulk_latency
;
2260 else if ((packets
< 10) || ((bytes
/packets
) > 1200))
2261 retval
= bulk_latency
;
2262 else if ((packets
> 35))
2263 retval
= lowest_latency
;
2264 } else if (bytes
/packets
> 2000) {
2265 retval
= bulk_latency
;
2266 } else if (packets
<= 2 && bytes
< 512) {
2267 retval
= lowest_latency
;
2270 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2271 if (bytes
> 25000) {
2273 retval
= low_latency
;
2274 } else if (bytes
< 6000) {
2275 retval
= low_latency
;
2284 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2286 struct e1000_hw
*hw
= &adapter
->hw
;
2288 u32 new_itr
= adapter
->itr
;
2290 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2291 if (adapter
->link_speed
!= SPEED_1000
) {
2297 if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
2302 adapter
->tx_itr
= e1000_update_itr(adapter
,
2304 adapter
->total_tx_packets
,
2305 adapter
->total_tx_bytes
);
2306 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2307 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
2308 adapter
->tx_itr
= low_latency
;
2310 adapter
->rx_itr
= e1000_update_itr(adapter
,
2312 adapter
->total_rx_packets
,
2313 adapter
->total_rx_bytes
);
2314 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2315 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2316 adapter
->rx_itr
= low_latency
;
2318 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2320 switch (current_itr
) {
2321 /* counts and packets in update_itr are dependent on these numbers */
2322 case lowest_latency
:
2326 new_itr
= 20000; /* aka hwitr = ~200 */
2336 if (new_itr
!= adapter
->itr
) {
2338 * this attempts to bias the interrupt rate towards Bulk
2339 * by adding intermediate steps when interrupt rate is
2342 new_itr
= new_itr
> adapter
->itr
?
2343 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2345 adapter
->itr
= new_itr
;
2346 adapter
->rx_ring
->itr_val
= new_itr
;
2347 if (adapter
->msix_entries
)
2348 adapter
->rx_ring
->set_itr
= 1;
2351 ew32(ITR
, 1000000000 / (new_itr
* 256));
2358 * e1000_alloc_queues - Allocate memory for all rings
2359 * @adapter: board private structure to initialize
2361 static int __devinit
e1000_alloc_queues(struct e1000_adapter
*adapter
)
2363 adapter
->tx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
2364 if (!adapter
->tx_ring
)
2367 adapter
->rx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
2368 if (!adapter
->rx_ring
)
2373 e_err("Unable to allocate memory for queues\n");
2374 kfree(adapter
->rx_ring
);
2375 kfree(adapter
->tx_ring
);
2380 * e1000_clean - NAPI Rx polling callback
2381 * @napi: struct associated with this polling callback
2382 * @budget: amount of packets driver is allowed to process this poll
2384 static int e1000_clean(struct napi_struct
*napi
, int budget
)
2386 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
2387 struct e1000_hw
*hw
= &adapter
->hw
;
2388 struct net_device
*poll_dev
= adapter
->netdev
;
2389 int tx_cleaned
= 1, work_done
= 0;
2391 adapter
= netdev_priv(poll_dev
);
2393 if (adapter
->msix_entries
&&
2394 !(adapter
->rx_ring
->ims_val
& adapter
->tx_ring
->ims_val
))
2397 tx_cleaned
= e1000_clean_tx_irq(adapter
);
2400 adapter
->clean_rx(adapter
, &work_done
, budget
);
2405 /* If budget not fully consumed, exit the polling mode */
2406 if (work_done
< budget
) {
2407 if (adapter
->itr_setting
& 3)
2408 e1000_set_itr(adapter
);
2409 napi_complete(napi
);
2410 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
2411 if (adapter
->msix_entries
)
2412 ew32(IMS
, adapter
->rx_ring
->ims_val
);
2414 e1000_irq_enable(adapter
);
2421 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
2423 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2424 struct e1000_hw
*hw
= &adapter
->hw
;
2427 /* don't update vlan cookie if already programmed */
2428 if ((adapter
->hw
.mng_cookie
.status
&
2429 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2430 (vid
== adapter
->mng_vlan_id
))
2433 /* add VID to filter table */
2434 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2435 index
= (vid
>> 5) & 0x7F;
2436 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2437 vfta
|= (1 << (vid
& 0x1F));
2438 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2441 set_bit(vid
, adapter
->active_vlans
);
2444 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
2446 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2447 struct e1000_hw
*hw
= &adapter
->hw
;
2450 if ((adapter
->hw
.mng_cookie
.status
&
2451 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2452 (vid
== adapter
->mng_vlan_id
)) {
2453 /* release control to f/w */
2454 e1000e_release_hw_control(adapter
);
2458 /* remove VID from filter table */
2459 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2460 index
= (vid
>> 5) & 0x7F;
2461 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2462 vfta
&= ~(1 << (vid
& 0x1F));
2463 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2466 clear_bit(vid
, adapter
->active_vlans
);
2470 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
2471 * @adapter: board private structure to initialize
2473 static void e1000e_vlan_filter_disable(struct e1000_adapter
*adapter
)
2475 struct net_device
*netdev
= adapter
->netdev
;
2476 struct e1000_hw
*hw
= &adapter
->hw
;
2479 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2480 /* disable VLAN receive filtering */
2482 rctl
&= ~(E1000_RCTL_VFE
| E1000_RCTL_CFIEN
);
2485 if (adapter
->mng_vlan_id
!= (u16
)E1000_MNG_VLAN_NONE
) {
2486 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
2487 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2493 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
2494 * @adapter: board private structure to initialize
2496 static void e1000e_vlan_filter_enable(struct e1000_adapter
*adapter
)
2498 struct e1000_hw
*hw
= &adapter
->hw
;
2501 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2502 /* enable VLAN receive filtering */
2504 rctl
|= E1000_RCTL_VFE
;
2505 rctl
&= ~E1000_RCTL_CFIEN
;
2511 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping
2512 * @adapter: board private structure to initialize
2514 static void e1000e_vlan_strip_disable(struct e1000_adapter
*adapter
)
2516 struct e1000_hw
*hw
= &adapter
->hw
;
2519 /* disable VLAN tag insert/strip */
2521 ctrl
&= ~E1000_CTRL_VME
;
2526 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
2527 * @adapter: board private structure to initialize
2529 static void e1000e_vlan_strip_enable(struct e1000_adapter
*adapter
)
2531 struct e1000_hw
*hw
= &adapter
->hw
;
2534 /* enable VLAN tag insert/strip */
2536 ctrl
|= E1000_CTRL_VME
;
2540 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
2542 struct net_device
*netdev
= adapter
->netdev
;
2543 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
2544 u16 old_vid
= adapter
->mng_vlan_id
;
2546 if (adapter
->hw
.mng_cookie
.status
&
2547 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
2548 e1000_vlan_rx_add_vid(netdev
, vid
);
2549 adapter
->mng_vlan_id
= vid
;
2552 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) && (vid
!= old_vid
))
2553 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
2556 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
2560 e1000_vlan_rx_add_vid(adapter
->netdev
, 0);
2562 for_each_set_bit(vid
, adapter
->active_vlans
, VLAN_N_VID
)
2563 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
2566 static void e1000_init_manageability_pt(struct e1000_adapter
*adapter
)
2568 struct e1000_hw
*hw
= &adapter
->hw
;
2569 u32 manc
, manc2h
, mdef
, i
, j
;
2571 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
2577 * enable receiving management packets to the host. this will probably
2578 * generate destination unreachable messages from the host OS, but
2579 * the packets will be handled on SMBUS
2581 manc
|= E1000_MANC_EN_MNG2HOST
;
2582 manc2h
= er32(MANC2H
);
2584 switch (hw
->mac
.type
) {
2586 manc2h
|= (E1000_MANC2H_PORT_623
| E1000_MANC2H_PORT_664
);
2591 * Check if IPMI pass-through decision filter already exists;
2594 for (i
= 0, j
= 0; i
< 8; i
++) {
2595 mdef
= er32(MDEF(i
));
2597 /* Ignore filters with anything other than IPMI ports */
2598 if (mdef
& ~(E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2601 /* Enable this decision filter in MANC2H */
2608 if (j
== (E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2611 /* Create new decision filter in an empty filter */
2612 for (i
= 0, j
= 0; i
< 8; i
++)
2613 if (er32(MDEF(i
)) == 0) {
2614 ew32(MDEF(i
), (E1000_MDEF_PORT_623
|
2615 E1000_MDEF_PORT_664
));
2622 e_warn("Unable to create IPMI pass-through filter\n");
2626 ew32(MANC2H
, manc2h
);
2631 * e1000_configure_tx - Configure Transmit Unit after Reset
2632 * @adapter: board private structure
2634 * Configure the Tx unit of the MAC after a reset.
2636 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
2638 struct e1000_hw
*hw
= &adapter
->hw
;
2639 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2641 u32 tdlen
, tctl
, tipg
, tarc
;
2644 /* Setup the HW Tx Head and Tail descriptor pointers */
2645 tdba
= tx_ring
->dma
;
2646 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2647 ew32(TDBAL
, (tdba
& DMA_BIT_MASK(32)));
2648 ew32(TDBAH
, (tdba
>> 32));
2652 tx_ring
->head
= E1000_TDH
;
2653 tx_ring
->tail
= E1000_TDT
;
2655 /* Set the default values for the Tx Inter Packet Gap timer */
2656 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
; /* 8 */
2657 ipgr1
= DEFAULT_82543_TIPG_IPGR1
; /* 8 */
2658 ipgr2
= DEFAULT_82543_TIPG_IPGR2
; /* 6 */
2660 if (adapter
->flags
& FLAG_TIPG_MEDIUM_FOR_80003ESLAN
)
2661 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
; /* 7 */
2663 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
2664 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
2667 /* Set the Tx Interrupt Delay register */
2668 ew32(TIDV
, adapter
->tx_int_delay
);
2669 /* Tx irq moderation */
2670 ew32(TADV
, adapter
->tx_abs_int_delay
);
2672 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
2673 u32 txdctl
= er32(TXDCTL(0));
2674 txdctl
&= ~(E1000_TXDCTL_PTHRESH
| E1000_TXDCTL_HTHRESH
|
2675 E1000_TXDCTL_WTHRESH
);
2677 * set up some performance related parameters to encourage the
2678 * hardware to use the bus more efficiently in bursts, depends
2679 * on the tx_int_delay to be enabled,
2680 * wthresh = 5 ==> burst write a cacheline (64 bytes) at a time
2681 * hthresh = 1 ==> prefetch when one or more available
2682 * pthresh = 0x1f ==> prefetch if internal cache 31 or less
2683 * BEWARE: this seems to work but should be considered first if
2684 * there are Tx hangs or other Tx related bugs
2686 txdctl
|= E1000_TXDCTL_DMA_BURST_ENABLE
;
2687 ew32(TXDCTL(0), txdctl
);
2688 /* erratum work around: set txdctl the same for both queues */
2689 ew32(TXDCTL(1), txdctl
);
2692 /* Program the Transmit Control Register */
2694 tctl
&= ~E1000_TCTL_CT
;
2695 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
2696 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
2698 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
2699 tarc
= er32(TARC(0));
2701 * set the speed mode bit, we'll clear it if we're not at
2702 * gigabit link later
2704 #define SPEED_MODE_BIT (1 << 21)
2705 tarc
|= SPEED_MODE_BIT
;
2706 ew32(TARC(0), tarc
);
2709 /* errata: program both queues to unweighted RR */
2710 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
2711 tarc
= er32(TARC(0));
2713 ew32(TARC(0), tarc
);
2714 tarc
= er32(TARC(1));
2716 ew32(TARC(1), tarc
);
2719 /* Setup Transmit Descriptor Settings for eop descriptor */
2720 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
2722 /* only set IDE if we are delaying interrupts using the timers */
2723 if (adapter
->tx_int_delay
)
2724 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
2726 /* enable Report Status bit */
2727 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
2731 e1000e_config_collision_dist(hw
);
2735 * e1000_setup_rctl - configure the receive control registers
2736 * @adapter: Board private structure
2738 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2739 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2740 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
2742 struct e1000_hw
*hw
= &adapter
->hw
;
2746 /* Workaround Si errata on 82579 - configure jumbo frame flow */
2747 if (hw
->mac
.type
== e1000_pch2lan
) {
2750 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
)
2751 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, true);
2753 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, false);
2756 e_dbg("failed to enable jumbo frame workaround mode\n");
2759 /* Program MC offset vector base */
2761 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
2762 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
2763 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
2764 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
2766 /* Do not Store bad packets */
2767 rctl
&= ~E1000_RCTL_SBP
;
2769 /* Enable Long Packet receive */
2770 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
2771 rctl
&= ~E1000_RCTL_LPE
;
2773 rctl
|= E1000_RCTL_LPE
;
2775 /* Some systems expect that the CRC is included in SMBUS traffic. The
2776 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2777 * host memory when this is enabled
2779 if (adapter
->flags2
& FLAG2_CRC_STRIPPING
)
2780 rctl
|= E1000_RCTL_SECRC
;
2782 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
2783 if ((hw
->phy
.type
== e1000_phy_82577
) && (rctl
& E1000_RCTL_LPE
)) {
2786 e1e_rphy(hw
, PHY_REG(770, 26), &phy_data
);
2788 phy_data
|= (1 << 2);
2789 e1e_wphy(hw
, PHY_REG(770, 26), phy_data
);
2791 e1e_rphy(hw
, 22, &phy_data
);
2793 phy_data
|= (1 << 14);
2794 e1e_wphy(hw
, 0x10, 0x2823);
2795 e1e_wphy(hw
, 0x11, 0x0003);
2796 e1e_wphy(hw
, 22, phy_data
);
2799 /* Setup buffer sizes */
2800 rctl
&= ~E1000_RCTL_SZ_4096
;
2801 rctl
|= E1000_RCTL_BSEX
;
2802 switch (adapter
->rx_buffer_len
) {
2805 rctl
|= E1000_RCTL_SZ_2048
;
2806 rctl
&= ~E1000_RCTL_BSEX
;
2809 rctl
|= E1000_RCTL_SZ_4096
;
2812 rctl
|= E1000_RCTL_SZ_8192
;
2815 rctl
|= E1000_RCTL_SZ_16384
;
2820 * 82571 and greater support packet-split where the protocol
2821 * header is placed in skb->data and the packet data is
2822 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2823 * In the case of a non-split, skb->data is linearly filled,
2824 * followed by the page buffers. Therefore, skb->data is
2825 * sized to hold the largest protocol header.
2827 * allocations using alloc_page take too long for regular MTU
2828 * so only enable packet split for jumbo frames
2830 * Using pages when the page size is greater than 16k wastes
2831 * a lot of memory, since we allocate 3 pages at all times
2834 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
2835 if (!(adapter
->flags
& FLAG_HAS_ERT
) && (pages
<= 3) &&
2836 (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
2837 adapter
->rx_ps_pages
= pages
;
2839 adapter
->rx_ps_pages
= 0;
2841 if (adapter
->rx_ps_pages
) {
2844 /* Configure extra packet-split registers */
2845 rfctl
= er32(RFCTL
);
2846 rfctl
|= E1000_RFCTL_EXTEN
;
2848 * disable packet split support for IPv6 extension headers,
2849 * because some malformed IPv6 headers can hang the Rx
2851 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
2852 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
2856 /* Enable Packet split descriptors */
2857 rctl
|= E1000_RCTL_DTYP_PS
;
2859 psrctl
|= adapter
->rx_ps_bsize0
>>
2860 E1000_PSRCTL_BSIZE0_SHIFT
;
2862 switch (adapter
->rx_ps_pages
) {
2864 psrctl
|= PAGE_SIZE
<<
2865 E1000_PSRCTL_BSIZE3_SHIFT
;
2867 psrctl
|= PAGE_SIZE
<<
2868 E1000_PSRCTL_BSIZE2_SHIFT
;
2870 psrctl
|= PAGE_SIZE
>>
2871 E1000_PSRCTL_BSIZE1_SHIFT
;
2875 ew32(PSRCTL
, psrctl
);
2879 /* just started the receive unit, no need to restart */
2880 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
2884 * e1000_configure_rx - Configure Receive Unit after Reset
2885 * @adapter: board private structure
2887 * Configure the Rx unit of the MAC after a reset.
2889 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
2891 struct e1000_hw
*hw
= &adapter
->hw
;
2892 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2894 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
2896 if (adapter
->rx_ps_pages
) {
2897 /* this is a 32 byte descriptor */
2898 rdlen
= rx_ring
->count
*
2899 sizeof(union e1000_rx_desc_packet_split
);
2900 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
2901 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
2902 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2903 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2904 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
2905 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
2907 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2908 adapter
->clean_rx
= e1000_clean_rx_irq
;
2909 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
2912 /* disable receives while setting up the descriptors */
2914 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2916 usleep_range(10000, 20000);
2918 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
2920 * set the writeback threshold (only takes effect if the RDTR
2921 * is set). set GRAN=1 and write back up to 0x4 worth, and
2922 * enable prefetching of 0x20 Rx descriptors
2928 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE
);
2929 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE
);
2932 * override the delay timers for enabling bursting, only if
2933 * the value was not set by the user via module options
2935 if (adapter
->rx_int_delay
== DEFAULT_RDTR
)
2936 adapter
->rx_int_delay
= BURST_RDTR
;
2937 if (adapter
->rx_abs_int_delay
== DEFAULT_RADV
)
2938 adapter
->rx_abs_int_delay
= BURST_RADV
;
2941 /* set the Receive Delay Timer Register */
2942 ew32(RDTR
, adapter
->rx_int_delay
);
2944 /* irq moderation */
2945 ew32(RADV
, adapter
->rx_abs_int_delay
);
2946 if ((adapter
->itr_setting
!= 0) && (adapter
->itr
!= 0))
2947 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
2949 ctrl_ext
= er32(CTRL_EXT
);
2950 /* Auto-Mask interrupts upon ICR access */
2951 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
2952 ew32(IAM
, 0xffffffff);
2953 ew32(CTRL_EXT
, ctrl_ext
);
2957 * Setup the HW Rx Head and Tail Descriptor Pointers and
2958 * the Base and Length of the Rx Descriptor Ring
2960 rdba
= rx_ring
->dma
;
2961 ew32(RDBAL
, (rdba
& DMA_BIT_MASK(32)));
2962 ew32(RDBAH
, (rdba
>> 32));
2966 rx_ring
->head
= E1000_RDH
;
2967 rx_ring
->tail
= E1000_RDT
;
2969 /* Enable Receive Checksum Offload for TCP and UDP */
2970 rxcsum
= er32(RXCSUM
);
2971 if (adapter
->flags
& FLAG_RX_CSUM_ENABLED
) {
2972 rxcsum
|= E1000_RXCSUM_TUOFL
;
2975 * IPv4 payload checksum for UDP fragments must be
2976 * used in conjunction with packet-split.
2978 if (adapter
->rx_ps_pages
)
2979 rxcsum
|= E1000_RXCSUM_IPPCSE
;
2981 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2982 /* no need to clear IPPCSE as it defaults to 0 */
2984 ew32(RXCSUM
, rxcsum
);
2987 * Enable early receives on supported devices, only takes effect when
2988 * packet size is equal or larger than the specified value (in 8 byte
2989 * units), e.g. using jumbo frames when setting to E1000_ERT_2048
2991 if ((adapter
->flags
& FLAG_HAS_ERT
) ||
2992 (adapter
->hw
.mac
.type
== e1000_pch2lan
)) {
2993 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
2994 u32 rxdctl
= er32(RXDCTL(0));
2995 ew32(RXDCTL(0), rxdctl
| 0x3);
2996 if (adapter
->flags
& FLAG_HAS_ERT
)
2997 ew32(ERT
, E1000_ERT_2048
| (1 << 13));
2999 * With jumbo frames and early-receive enabled,
3000 * excessive C-state transition latencies result in
3001 * dropped transactions.
3003 pm_qos_update_request(&adapter
->netdev
->pm_qos_req
, 55);
3005 pm_qos_update_request(&adapter
->netdev
->pm_qos_req
,
3006 PM_QOS_DEFAULT_VALUE
);
3010 /* Enable Receives */
3015 * e1000_update_mc_addr_list - Update Multicast addresses
3016 * @hw: pointer to the HW structure
3017 * @mc_addr_list: array of multicast addresses to program
3018 * @mc_addr_count: number of multicast addresses to program
3020 * Updates the Multicast Table Array.
3021 * The caller must have a packed mc_addr_list of multicast addresses.
3023 static void e1000_update_mc_addr_list(struct e1000_hw
*hw
, u8
*mc_addr_list
,
3026 hw
->mac
.ops
.update_mc_addr_list(hw
, mc_addr_list
, mc_addr_count
);
3030 * e1000_set_multi - Multicast and Promiscuous mode set
3031 * @netdev: network interface device structure
3033 * The set_multi entry point is called whenever the multicast address
3034 * list or the network interface flags are updated. This routine is
3035 * responsible for configuring the hardware for proper multicast,
3036 * promiscuous mode, and all-multi behavior.
3038 static void e1000_set_multi(struct net_device
*netdev
)
3040 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3041 struct e1000_hw
*hw
= &adapter
->hw
;
3042 struct netdev_hw_addr
*ha
;
3046 /* Check for Promiscuous and All Multicast modes */
3050 if (netdev
->flags
& IFF_PROMISC
) {
3051 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3052 rctl
&= ~E1000_RCTL_VFE
;
3053 /* Do not hardware filter VLANs in promisc mode */
3054 e1000e_vlan_filter_disable(adapter
);
3056 if (netdev
->flags
& IFF_ALLMULTI
) {
3057 rctl
|= E1000_RCTL_MPE
;
3058 rctl
&= ~E1000_RCTL_UPE
;
3060 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3062 e1000e_vlan_filter_enable(adapter
);
3067 if (!netdev_mc_empty(netdev
)) {
3070 mta_list
= kmalloc(netdev_mc_count(netdev
) * 6, GFP_ATOMIC
);
3074 /* prepare a packed array of only addresses. */
3075 netdev_for_each_mc_addr(ha
, netdev
)
3076 memcpy(mta_list
+ (i
++ * ETH_ALEN
), ha
->addr
, ETH_ALEN
);
3078 e1000_update_mc_addr_list(hw
, mta_list
, i
);
3082 * if we're called from probe, we might not have
3083 * anything to do here, so clear out the list
3085 e1000_update_mc_addr_list(hw
, NULL
, 0);
3088 if (netdev
->features
& NETIF_F_HW_VLAN_RX
)
3089 e1000e_vlan_strip_enable(adapter
);
3091 e1000e_vlan_strip_disable(adapter
);
3095 * e1000_configure - configure the hardware for Rx and Tx
3096 * @adapter: private board structure
3098 static void e1000_configure(struct e1000_adapter
*adapter
)
3100 e1000_set_multi(adapter
->netdev
);
3102 e1000_restore_vlan(adapter
);
3103 e1000_init_manageability_pt(adapter
);
3105 e1000_configure_tx(adapter
);
3106 e1000_setup_rctl(adapter
);
3107 e1000_configure_rx(adapter
);
3108 adapter
->alloc_rx_buf(adapter
, e1000_desc_unused(adapter
->rx_ring
));
3112 * e1000e_power_up_phy - restore link in case the phy was powered down
3113 * @adapter: address of board private structure
3115 * The phy may be powered down to save power and turn off link when the
3116 * driver is unloaded and wake on lan is not enabled (among others)
3117 * *** this routine MUST be followed by a call to e1000e_reset ***
3119 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
3121 if (adapter
->hw
.phy
.ops
.power_up
)
3122 adapter
->hw
.phy
.ops
.power_up(&adapter
->hw
);
3124 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
3128 * e1000_power_down_phy - Power down the PHY
3130 * Power down the PHY so no link is implied when interface is down.
3131 * The PHY cannot be powered down if management or WoL is active.
3133 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
3135 /* WoL is enabled */
3139 if (adapter
->hw
.phy
.ops
.power_down
)
3140 adapter
->hw
.phy
.ops
.power_down(&adapter
->hw
);
3144 * e1000e_reset - bring the hardware into a known good state
3146 * This function boots the hardware and enables some settings that
3147 * require a configuration cycle of the hardware - those cannot be
3148 * set/changed during runtime. After reset the device needs to be
3149 * properly configured for Rx, Tx etc.
3151 void e1000e_reset(struct e1000_adapter
*adapter
)
3153 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3154 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
3155 struct e1000_hw
*hw
= &adapter
->hw
;
3156 u32 tx_space
, min_tx_space
, min_rx_space
;
3157 u32 pba
= adapter
->pba
;
3160 /* reset Packet Buffer Allocation to default */
3163 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3165 * To maintain wire speed transmits, the Tx FIFO should be
3166 * large enough to accommodate two full transmit packets,
3167 * rounded up to the next 1KB and expressed in KB. Likewise,
3168 * the Rx FIFO should be large enough to accommodate at least
3169 * one full receive packet and is similarly rounded up and
3173 /* upper 16 bits has Tx packet buffer allocation size in KB */
3174 tx_space
= pba
>> 16;
3175 /* lower 16 bits has Rx packet buffer allocation size in KB */
3178 * the Tx fifo also stores 16 bytes of information about the Tx
3179 * but don't include ethernet FCS because hardware appends it
3181 min_tx_space
= (adapter
->max_frame_size
+
3182 sizeof(struct e1000_tx_desc
) -
3184 min_tx_space
= ALIGN(min_tx_space
, 1024);
3185 min_tx_space
>>= 10;
3186 /* software strips receive CRC, so leave room for it */
3187 min_rx_space
= adapter
->max_frame_size
;
3188 min_rx_space
= ALIGN(min_rx_space
, 1024);
3189 min_rx_space
>>= 10;
3192 * If current Tx allocation is less than the min Tx FIFO size,
3193 * and the min Tx FIFO size is less than the current Rx FIFO
3194 * allocation, take space away from current Rx allocation
3196 if ((tx_space
< min_tx_space
) &&
3197 ((min_tx_space
- tx_space
) < pba
)) {
3198 pba
-= min_tx_space
- tx_space
;
3201 * if short on Rx space, Rx wins and must trump Tx
3202 * adjustment or use Early Receive if available
3204 if ((pba
< min_rx_space
) &&
3205 (!(adapter
->flags
& FLAG_HAS_ERT
)))
3206 /* ERT enabled in e1000_configure_rx */
3214 * flow control settings
3216 * The high water mark must be low enough to fit one full frame
3217 * (or the size used for early receive) above it in the Rx FIFO.
3218 * Set it to the lower of:
3219 * - 90% of the Rx FIFO size, and
3220 * - the full Rx FIFO size minus the early receive size (for parts
3221 * with ERT support assuming ERT set to E1000_ERT_2048), or
3222 * - the full Rx FIFO size minus one full frame
3224 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
3225 fc
->pause_time
= 0xFFFF;
3227 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
3229 fc
->current_mode
= fc
->requested_mode
;
3231 switch (hw
->mac
.type
) {
3233 if ((adapter
->flags
& FLAG_HAS_ERT
) &&
3234 (adapter
->netdev
->mtu
> ETH_DATA_LEN
))
3235 hwm
= min(((pba
<< 10) * 9 / 10),
3236 ((pba
<< 10) - (E1000_ERT_2048
<< 3)));
3238 hwm
= min(((pba
<< 10) * 9 / 10),
3239 ((pba
<< 10) - adapter
->max_frame_size
));
3241 fc
->high_water
= hwm
& E1000_FCRTH_RTH
; /* 8-byte granularity */
3242 fc
->low_water
= fc
->high_water
- 8;
3246 * Workaround PCH LOM adapter hangs with certain network
3247 * loads. If hangs persist, try disabling Tx flow control.
3249 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3250 fc
->high_water
= 0x3500;
3251 fc
->low_water
= 0x1500;
3253 fc
->high_water
= 0x5000;
3254 fc
->low_water
= 0x3000;
3256 fc
->refresh_time
= 0x1000;
3259 fc
->high_water
= 0x05C20;
3260 fc
->low_water
= 0x05048;
3261 fc
->pause_time
= 0x0650;
3262 fc
->refresh_time
= 0x0400;
3263 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3271 * Disable Adaptive Interrupt Moderation if 2 full packets cannot
3272 * fit in receive buffer and early-receive not supported.
3274 if (adapter
->itr_setting
& 0x3) {
3275 if (((adapter
->max_frame_size
* 2) > (pba
<< 10)) &&
3276 !(adapter
->flags
& FLAG_HAS_ERT
)) {
3277 if (!(adapter
->flags2
& FLAG2_DISABLE_AIM
)) {
3278 dev_info(&adapter
->pdev
->dev
,
3279 "Interrupt Throttle Rate turned off\n");
3280 adapter
->flags2
|= FLAG2_DISABLE_AIM
;
3283 } else if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
3284 dev_info(&adapter
->pdev
->dev
,
3285 "Interrupt Throttle Rate turned on\n");
3286 adapter
->flags2
&= ~FLAG2_DISABLE_AIM
;
3287 adapter
->itr
= 20000;
3288 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
3292 /* Allow time for pending master requests to run */
3293 mac
->ops
.reset_hw(hw
);
3296 * For parts with AMT enabled, let the firmware know
3297 * that the network interface is in control
3299 if (adapter
->flags
& FLAG_HAS_AMT
)
3300 e1000e_get_hw_control(adapter
);
3304 if (mac
->ops
.init_hw(hw
))
3305 e_err("Hardware Error\n");
3307 e1000_update_mng_vlan(adapter
);
3309 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3310 ew32(VET
, ETH_P_8021Q
);
3312 e1000e_reset_adaptive(hw
);
3314 if (!netif_running(adapter
->netdev
) &&
3315 !test_bit(__E1000_TESTING
, &adapter
->state
)) {
3316 e1000_power_down_phy(adapter
);
3320 e1000_get_phy_info(hw
);
3322 if ((adapter
->flags
& FLAG_HAS_SMART_POWER_DOWN
) &&
3323 !(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
3326 * speed up time to link by disabling smart power down, ignore
3327 * the return value of this function because there is nothing
3328 * different we would do if it failed
3330 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
3331 phy_data
&= ~IGP02E1000_PM_SPD
;
3332 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
3336 int e1000e_up(struct e1000_adapter
*adapter
)
3338 struct e1000_hw
*hw
= &adapter
->hw
;
3340 /* hardware has been reset, we need to reload some things */
3341 e1000_configure(adapter
);
3343 clear_bit(__E1000_DOWN
, &adapter
->state
);
3345 napi_enable(&adapter
->napi
);
3346 if (adapter
->msix_entries
)
3347 e1000_configure_msix(adapter
);
3348 e1000_irq_enable(adapter
);
3350 netif_start_queue(adapter
->netdev
);
3352 /* fire a link change interrupt to start the watchdog */
3353 if (adapter
->msix_entries
)
3354 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
3356 ew32(ICS
, E1000_ICS_LSC
);
3361 static void e1000e_flush_descriptors(struct e1000_adapter
*adapter
)
3363 struct e1000_hw
*hw
= &adapter
->hw
;
3365 if (!(adapter
->flags2
& FLAG2_DMA_BURST
))
3368 /* flush pending descriptor writebacks to memory */
3369 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
3370 ew32(RDTR
, adapter
->rx_int_delay
| E1000_RDTR_FPD
);
3372 /* execute the writes immediately */
3376 static void e1000e_update_stats(struct e1000_adapter
*adapter
);
3378 void e1000e_down(struct e1000_adapter
*adapter
)
3380 struct net_device
*netdev
= adapter
->netdev
;
3381 struct e1000_hw
*hw
= &adapter
->hw
;
3385 * signal that we're down so the interrupt handler does not
3386 * reschedule our watchdog timer
3388 set_bit(__E1000_DOWN
, &adapter
->state
);
3390 /* disable receives in the hardware */
3392 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3393 /* flush and sleep below */
3395 netif_stop_queue(netdev
);
3397 /* disable transmits in the hardware */
3399 tctl
&= ~E1000_TCTL_EN
;
3401 /* flush both disables and wait for them to finish */
3403 usleep_range(10000, 20000);
3405 napi_disable(&adapter
->napi
);
3406 e1000_irq_disable(adapter
);
3408 del_timer_sync(&adapter
->watchdog_timer
);
3409 del_timer_sync(&adapter
->phy_info_timer
);
3411 netif_carrier_off(netdev
);
3413 spin_lock(&adapter
->stats64_lock
);
3414 e1000e_update_stats(adapter
);
3415 spin_unlock(&adapter
->stats64_lock
);
3417 e1000e_flush_descriptors(adapter
);
3418 e1000_clean_tx_ring(adapter
);
3419 e1000_clean_rx_ring(adapter
);
3421 adapter
->link_speed
= 0;
3422 adapter
->link_duplex
= 0;
3424 if (!pci_channel_offline(adapter
->pdev
))
3425 e1000e_reset(adapter
);
3428 * TODO: for power management, we could drop the link and
3429 * pci_disable_device here.
3433 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
3436 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
3437 usleep_range(1000, 2000);
3438 e1000e_down(adapter
);
3440 clear_bit(__E1000_RESETTING
, &adapter
->state
);
3444 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
3445 * @adapter: board private structure to initialize
3447 * e1000_sw_init initializes the Adapter private data structure.
3448 * Fields are initialized based on PCI device information and
3449 * OS network device settings (MTU size).
3451 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
3453 struct net_device
*netdev
= adapter
->netdev
;
3455 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
3456 adapter
->rx_ps_bsize0
= 128;
3457 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3458 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
3460 spin_lock_init(&adapter
->stats64_lock
);
3462 e1000e_set_interrupt_capability(adapter
);
3464 if (e1000_alloc_queues(adapter
))
3467 /* Explicitly disable IRQ since the NIC can be in any state. */
3468 e1000_irq_disable(adapter
);
3470 set_bit(__E1000_DOWN
, &adapter
->state
);
3475 * e1000_intr_msi_test - Interrupt Handler
3476 * @irq: interrupt number
3477 * @data: pointer to a network interface device structure
3479 static irqreturn_t
e1000_intr_msi_test(int irq
, void *data
)
3481 struct net_device
*netdev
= data
;
3482 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3483 struct e1000_hw
*hw
= &adapter
->hw
;
3484 u32 icr
= er32(ICR
);
3486 e_dbg("icr is %08X\n", icr
);
3487 if (icr
& E1000_ICR_RXSEQ
) {
3488 adapter
->flags
&= ~FLAG_MSI_TEST_FAILED
;
3496 * e1000_test_msi_interrupt - Returns 0 for successful test
3497 * @adapter: board private struct
3499 * code flow taken from tg3.c
3501 static int e1000_test_msi_interrupt(struct e1000_adapter
*adapter
)
3503 struct net_device
*netdev
= adapter
->netdev
;
3504 struct e1000_hw
*hw
= &adapter
->hw
;
3507 /* poll_enable hasn't been called yet, so don't need disable */
3508 /* clear any pending events */
3511 /* free the real vector and request a test handler */
3512 e1000_free_irq(adapter
);
3513 e1000e_reset_interrupt_capability(adapter
);
3515 /* Assume that the test fails, if it succeeds then the test
3516 * MSI irq handler will unset this flag */
3517 adapter
->flags
|= FLAG_MSI_TEST_FAILED
;
3519 err
= pci_enable_msi(adapter
->pdev
);
3521 goto msi_test_failed
;
3523 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi_test
, 0,
3524 netdev
->name
, netdev
);
3526 pci_disable_msi(adapter
->pdev
);
3527 goto msi_test_failed
;
3532 e1000_irq_enable(adapter
);
3534 /* fire an unusual interrupt on the test handler */
3535 ew32(ICS
, E1000_ICS_RXSEQ
);
3539 e1000_irq_disable(adapter
);
3543 if (adapter
->flags
& FLAG_MSI_TEST_FAILED
) {
3544 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
3545 e_info("MSI interrupt test failed, using legacy interrupt.\n");
3547 e_dbg("MSI interrupt test succeeded!\n");
3549 free_irq(adapter
->pdev
->irq
, netdev
);
3550 pci_disable_msi(adapter
->pdev
);
3553 e1000e_set_interrupt_capability(adapter
);
3554 return e1000_request_irq(adapter
);
3558 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3559 * @adapter: board private struct
3561 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3563 static int e1000_test_msi(struct e1000_adapter
*adapter
)
3568 if (!(adapter
->flags
& FLAG_MSI_ENABLED
))
3571 /* disable SERR in case the MSI write causes a master abort */
3572 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3573 if (pci_cmd
& PCI_COMMAND_SERR
)
3574 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
,
3575 pci_cmd
& ~PCI_COMMAND_SERR
);
3577 err
= e1000_test_msi_interrupt(adapter
);
3579 /* re-enable SERR */
3580 if (pci_cmd
& PCI_COMMAND_SERR
) {
3581 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3582 pci_cmd
|= PCI_COMMAND_SERR
;
3583 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
, pci_cmd
);
3590 * e1000_open - Called when a network interface is made active
3591 * @netdev: network interface device structure
3593 * Returns 0 on success, negative value on failure
3595 * The open entry point is called when a network interface is made
3596 * active by the system (IFF_UP). At this point all resources needed
3597 * for transmit and receive operations are allocated, the interrupt
3598 * handler is registered with the OS, the watchdog timer is started,
3599 * and the stack is notified that the interface is ready.
3601 static int e1000_open(struct net_device
*netdev
)
3603 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3604 struct e1000_hw
*hw
= &adapter
->hw
;
3605 struct pci_dev
*pdev
= adapter
->pdev
;
3608 /* disallow open during test */
3609 if (test_bit(__E1000_TESTING
, &adapter
->state
))
3612 pm_runtime_get_sync(&pdev
->dev
);
3614 netif_carrier_off(netdev
);
3616 /* allocate transmit descriptors */
3617 err
= e1000e_setup_tx_resources(adapter
);
3621 /* allocate receive descriptors */
3622 err
= e1000e_setup_rx_resources(adapter
);
3627 * If AMT is enabled, let the firmware know that the network
3628 * interface is now open and reset the part to a known state.
3630 if (adapter
->flags
& FLAG_HAS_AMT
) {
3631 e1000e_get_hw_control(adapter
);
3632 e1000e_reset(adapter
);
3635 e1000e_power_up_phy(adapter
);
3637 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
3638 if ((adapter
->hw
.mng_cookie
.status
&
3639 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
3640 e1000_update_mng_vlan(adapter
);
3642 /* DMA latency requirement to workaround early-receive/jumbo issue */
3643 if ((adapter
->flags
& FLAG_HAS_ERT
) ||
3644 (adapter
->hw
.mac
.type
== e1000_pch2lan
))
3645 pm_qos_add_request(&adapter
->netdev
->pm_qos_req
,
3646 PM_QOS_CPU_DMA_LATENCY
,
3647 PM_QOS_DEFAULT_VALUE
);
3650 * before we allocate an interrupt, we must be ready to handle it.
3651 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3652 * as soon as we call pci_request_irq, so we have to setup our
3653 * clean_rx handler before we do so.
3655 e1000_configure(adapter
);
3657 err
= e1000_request_irq(adapter
);
3662 * Work around PCIe errata with MSI interrupts causing some chipsets to
3663 * ignore e1000e MSI messages, which means we need to test our MSI
3666 if (adapter
->int_mode
!= E1000E_INT_MODE_LEGACY
) {
3667 err
= e1000_test_msi(adapter
);
3669 e_err("Interrupt allocation failed\n");
3674 /* From here on the code is the same as e1000e_up() */
3675 clear_bit(__E1000_DOWN
, &adapter
->state
);
3677 napi_enable(&adapter
->napi
);
3679 e1000_irq_enable(adapter
);
3681 netif_start_queue(netdev
);
3683 adapter
->idle_check
= true;
3684 pm_runtime_put(&pdev
->dev
);
3686 /* fire a link status change interrupt to start the watchdog */
3687 if (adapter
->msix_entries
)
3688 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
3690 ew32(ICS
, E1000_ICS_LSC
);
3695 e1000e_release_hw_control(adapter
);
3696 e1000_power_down_phy(adapter
);
3697 e1000e_free_rx_resources(adapter
);
3699 e1000e_free_tx_resources(adapter
);
3701 e1000e_reset(adapter
);
3702 pm_runtime_put_sync(&pdev
->dev
);
3708 * e1000_close - Disables a network interface
3709 * @netdev: network interface device structure
3711 * Returns 0, this is not allowed to fail
3713 * The close entry point is called when an interface is de-activated
3714 * by the OS. The hardware is still under the drivers control, but
3715 * needs to be disabled. A global MAC reset is issued to stop the
3716 * hardware, and all transmit and receive resources are freed.
3718 static int e1000_close(struct net_device
*netdev
)
3720 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3721 struct pci_dev
*pdev
= adapter
->pdev
;
3723 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
3725 pm_runtime_get_sync(&pdev
->dev
);
3727 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
3728 e1000e_down(adapter
);
3729 e1000_free_irq(adapter
);
3731 e1000_power_down_phy(adapter
);
3733 e1000e_free_tx_resources(adapter
);
3734 e1000e_free_rx_resources(adapter
);
3737 * kill manageability vlan ID if supported, but not if a vlan with
3738 * the same ID is registered on the host OS (let 8021q kill it)
3740 if (adapter
->hw
.mng_cookie
.status
&
3741 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)
3742 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
3745 * If AMT is enabled, let the firmware know that the network
3746 * interface is now closed
3748 if ((adapter
->flags
& FLAG_HAS_AMT
) &&
3749 !test_bit(__E1000_TESTING
, &adapter
->state
))
3750 e1000e_release_hw_control(adapter
);
3752 if ((adapter
->flags
& FLAG_HAS_ERT
) ||
3753 (adapter
->hw
.mac
.type
== e1000_pch2lan
))
3754 pm_qos_remove_request(&adapter
->netdev
->pm_qos_req
);
3756 pm_runtime_put_sync(&pdev
->dev
);
3761 * e1000_set_mac - Change the Ethernet Address of the NIC
3762 * @netdev: network interface device structure
3763 * @p: pointer to an address structure
3765 * Returns 0 on success, negative on failure
3767 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
3769 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3770 struct sockaddr
*addr
= p
;
3772 if (!is_valid_ether_addr(addr
->sa_data
))
3773 return -EADDRNOTAVAIL
;
3775 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
3776 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
3778 e1000e_rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
3780 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
3781 /* activate the work around */
3782 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
3785 * Hold a copy of the LAA in RAR[14] This is done so that
3786 * between the time RAR[0] gets clobbered and the time it
3787 * gets fixed (in e1000_watchdog), the actual LAA is in one
3788 * of the RARs and no incoming packets directed to this port
3789 * are dropped. Eventually the LAA will be in RAR[0] and
3792 e1000e_rar_set(&adapter
->hw
,
3793 adapter
->hw
.mac
.addr
,
3794 adapter
->hw
.mac
.rar_entry_count
- 1);
3801 * e1000e_update_phy_task - work thread to update phy
3802 * @work: pointer to our work struct
3804 * this worker thread exists because we must acquire a
3805 * semaphore to read the phy, which we could msleep while
3806 * waiting for it, and we can't msleep in a timer.
3808 static void e1000e_update_phy_task(struct work_struct
*work
)
3810 struct e1000_adapter
*adapter
= container_of(work
,
3811 struct e1000_adapter
, update_phy_task
);
3813 if (test_bit(__E1000_DOWN
, &adapter
->state
))
3816 e1000_get_phy_info(&adapter
->hw
);
3820 * Need to wait a few seconds after link up to get diagnostic information from
3823 static void e1000_update_phy_info(unsigned long data
)
3825 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3827 if (test_bit(__E1000_DOWN
, &adapter
->state
))
3830 schedule_work(&adapter
->update_phy_task
);
3834 * e1000e_update_phy_stats - Update the PHY statistics counters
3835 * @adapter: board private structure
3837 * Read/clear the upper 16-bit PHY registers and read/accumulate lower
3839 static void e1000e_update_phy_stats(struct e1000_adapter
*adapter
)
3841 struct e1000_hw
*hw
= &adapter
->hw
;
3845 ret_val
= hw
->phy
.ops
.acquire(hw
);
3850 * A page set is expensive so check if already on desired page.
3851 * If not, set to the page with the PHY status registers.
3854 ret_val
= e1000e_read_phy_reg_mdic(hw
, IGP01E1000_PHY_PAGE_SELECT
,
3858 if (phy_data
!= (HV_STATS_PAGE
<< IGP_PAGE_SHIFT
)) {
3859 ret_val
= hw
->phy
.ops
.set_page(hw
,
3860 HV_STATS_PAGE
<< IGP_PAGE_SHIFT
);
3865 /* Single Collision Count */
3866 hw
->phy
.ops
.read_reg_page(hw
, HV_SCC_UPPER
, &phy_data
);
3867 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_SCC_LOWER
, &phy_data
);
3869 adapter
->stats
.scc
+= phy_data
;
3871 /* Excessive Collision Count */
3872 hw
->phy
.ops
.read_reg_page(hw
, HV_ECOL_UPPER
, &phy_data
);
3873 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_ECOL_LOWER
, &phy_data
);
3875 adapter
->stats
.ecol
+= phy_data
;
3877 /* Multiple Collision Count */
3878 hw
->phy
.ops
.read_reg_page(hw
, HV_MCC_UPPER
, &phy_data
);
3879 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_MCC_LOWER
, &phy_data
);
3881 adapter
->stats
.mcc
+= phy_data
;
3883 /* Late Collision Count */
3884 hw
->phy
.ops
.read_reg_page(hw
, HV_LATECOL_UPPER
, &phy_data
);
3885 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_LATECOL_LOWER
, &phy_data
);
3887 adapter
->stats
.latecol
+= phy_data
;
3889 /* Collision Count - also used for adaptive IFS */
3890 hw
->phy
.ops
.read_reg_page(hw
, HV_COLC_UPPER
, &phy_data
);
3891 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_COLC_LOWER
, &phy_data
);
3893 hw
->mac
.collision_delta
= phy_data
;
3896 hw
->phy
.ops
.read_reg_page(hw
, HV_DC_UPPER
, &phy_data
);
3897 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_DC_LOWER
, &phy_data
);
3899 adapter
->stats
.dc
+= phy_data
;
3901 /* Transmit with no CRS */
3902 hw
->phy
.ops
.read_reg_page(hw
, HV_TNCRS_UPPER
, &phy_data
);
3903 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_TNCRS_LOWER
, &phy_data
);
3905 adapter
->stats
.tncrs
+= phy_data
;
3908 hw
->phy
.ops
.release(hw
);
3912 * e1000e_update_stats - Update the board statistics counters
3913 * @adapter: board private structure
3915 static void e1000e_update_stats(struct e1000_adapter
*adapter
)
3917 struct net_device
*netdev
= adapter
->netdev
;
3918 struct e1000_hw
*hw
= &adapter
->hw
;
3919 struct pci_dev
*pdev
= adapter
->pdev
;
3922 * Prevent stats update while adapter is being reset, or if the pci
3923 * connection is down.
3925 if (adapter
->link_speed
== 0)
3927 if (pci_channel_offline(pdev
))
3930 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
3931 adapter
->stats
.gprc
+= er32(GPRC
);
3932 adapter
->stats
.gorc
+= er32(GORCL
);
3933 er32(GORCH
); /* Clear gorc */
3934 adapter
->stats
.bprc
+= er32(BPRC
);
3935 adapter
->stats
.mprc
+= er32(MPRC
);
3936 adapter
->stats
.roc
+= er32(ROC
);
3938 adapter
->stats
.mpc
+= er32(MPC
);
3940 /* Half-duplex statistics */
3941 if (adapter
->link_duplex
== HALF_DUPLEX
) {
3942 if (adapter
->flags2
& FLAG2_HAS_PHY_STATS
) {
3943 e1000e_update_phy_stats(adapter
);
3945 adapter
->stats
.scc
+= er32(SCC
);
3946 adapter
->stats
.ecol
+= er32(ECOL
);
3947 adapter
->stats
.mcc
+= er32(MCC
);
3948 adapter
->stats
.latecol
+= er32(LATECOL
);
3949 adapter
->stats
.dc
+= er32(DC
);
3951 hw
->mac
.collision_delta
= er32(COLC
);
3953 if ((hw
->mac
.type
!= e1000_82574
) &&
3954 (hw
->mac
.type
!= e1000_82583
))
3955 adapter
->stats
.tncrs
+= er32(TNCRS
);
3957 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
3960 adapter
->stats
.xonrxc
+= er32(XONRXC
);
3961 adapter
->stats
.xontxc
+= er32(XONTXC
);
3962 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
3963 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
3964 adapter
->stats
.gptc
+= er32(GPTC
);
3965 adapter
->stats
.gotc
+= er32(GOTCL
);
3966 er32(GOTCH
); /* Clear gotc */
3967 adapter
->stats
.rnbc
+= er32(RNBC
);
3968 adapter
->stats
.ruc
+= er32(RUC
);
3970 adapter
->stats
.mptc
+= er32(MPTC
);
3971 adapter
->stats
.bptc
+= er32(BPTC
);
3973 /* used for adaptive IFS */
3975 hw
->mac
.tx_packet_delta
= er32(TPT
);
3976 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
3978 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
3979 adapter
->stats
.rxerrc
+= er32(RXERRC
);
3980 adapter
->stats
.cexterr
+= er32(CEXTERR
);
3981 adapter
->stats
.tsctc
+= er32(TSCTC
);
3982 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
3984 /* Fill out the OS statistics structure */
3985 netdev
->stats
.multicast
= adapter
->stats
.mprc
;
3986 netdev
->stats
.collisions
= adapter
->stats
.colc
;
3991 * RLEC on some newer hardware can be incorrect so build
3992 * our own version based on RUC and ROC
3994 netdev
->stats
.rx_errors
= adapter
->stats
.rxerrc
+
3995 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3996 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3997 adapter
->stats
.cexterr
;
3998 netdev
->stats
.rx_length_errors
= adapter
->stats
.ruc
+
4000 netdev
->stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
4001 netdev
->stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
4002 netdev
->stats
.rx_missed_errors
= adapter
->stats
.mpc
;
4005 netdev
->stats
.tx_errors
= adapter
->stats
.ecol
+
4006 adapter
->stats
.latecol
;
4007 netdev
->stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
4008 netdev
->stats
.tx_window_errors
= adapter
->stats
.latecol
;
4009 netdev
->stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
4011 /* Tx Dropped needs to be maintained elsewhere */
4013 /* Management Stats */
4014 adapter
->stats
.mgptc
+= er32(MGTPTC
);
4015 adapter
->stats
.mgprc
+= er32(MGTPRC
);
4016 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
4020 * e1000_phy_read_status - Update the PHY register status snapshot
4021 * @adapter: board private structure
4023 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
4025 struct e1000_hw
*hw
= &adapter
->hw
;
4026 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
4028 if ((er32(STATUS
) & E1000_STATUS_LU
) &&
4029 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
4032 ret_val
= e1e_rphy(hw
, PHY_CONTROL
, &phy
->bmcr
);
4033 ret_val
|= e1e_rphy(hw
, PHY_STATUS
, &phy
->bmsr
);
4034 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_ADV
, &phy
->advertise
);
4035 ret_val
|= e1e_rphy(hw
, PHY_LP_ABILITY
, &phy
->lpa
);
4036 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_EXP
, &phy
->expansion
);
4037 ret_val
|= e1e_rphy(hw
, PHY_1000T_CTRL
, &phy
->ctrl1000
);
4038 ret_val
|= e1e_rphy(hw
, PHY_1000T_STATUS
, &phy
->stat1000
);
4039 ret_val
|= e1e_rphy(hw
, PHY_EXT_STATUS
, &phy
->estatus
);
4041 e_warn("Error reading PHY register\n");
4044 * Do not read PHY registers if link is not up
4045 * Set values to typical power-on defaults
4047 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
4048 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
4049 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
4051 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
4052 ADVERTISE_ALL
| ADVERTISE_CSMA
);
4054 phy
->expansion
= EXPANSION_ENABLENPAGE
;
4055 phy
->ctrl1000
= ADVERTISE_1000FULL
;
4057 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
4061 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
4063 struct e1000_hw
*hw
= &adapter
->hw
;
4064 u32 ctrl
= er32(CTRL
);
4066 /* Link status message must follow this format for user tools */
4067 printk(KERN_INFO
"e1000e: %s NIC Link is Up %d Mbps %s, "
4068 "Flow Control: %s\n",
4069 adapter
->netdev
->name
,
4070 adapter
->link_speed
,
4071 (adapter
->link_duplex
== FULL_DUPLEX
) ?
4072 "Full Duplex" : "Half Duplex",
4073 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
)) ?
4075 ((ctrl
& E1000_CTRL_RFCE
) ? "Rx" :
4076 ((ctrl
& E1000_CTRL_TFCE
) ? "Tx" : "None")));
4079 static bool e1000e_has_link(struct e1000_adapter
*adapter
)
4081 struct e1000_hw
*hw
= &adapter
->hw
;
4082 bool link_active
= 0;
4086 * get_link_status is set on LSC (link status) interrupt or
4087 * Rx sequence error interrupt. get_link_status will stay
4088 * false until the check_for_link establishes link
4089 * for copper adapters ONLY
4091 switch (hw
->phy
.media_type
) {
4092 case e1000_media_type_copper
:
4093 if (hw
->mac
.get_link_status
) {
4094 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4095 link_active
= !hw
->mac
.get_link_status
;
4100 case e1000_media_type_fiber
:
4101 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4102 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
4104 case e1000_media_type_internal_serdes
:
4105 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4106 link_active
= adapter
->hw
.mac
.serdes_has_link
;
4109 case e1000_media_type_unknown
:
4113 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
4114 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
4115 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
4116 e_info("Gigabit has been disabled, downgrading speed\n");
4122 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
4124 /* make sure the receive unit is started */
4125 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
4126 (adapter
->flags
& FLAG_RX_RESTART_NOW
)) {
4127 struct e1000_hw
*hw
= &adapter
->hw
;
4128 u32 rctl
= er32(RCTL
);
4129 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
4130 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
4134 static void e1000e_check_82574_phy_workaround(struct e1000_adapter
*adapter
)
4136 struct e1000_hw
*hw
= &adapter
->hw
;
4139 * With 82574 controllers, PHY needs to be checked periodically
4140 * for hung state and reset, if two calls return true
4142 if (e1000_check_phy_82574(hw
))
4143 adapter
->phy_hang_count
++;
4145 adapter
->phy_hang_count
= 0;
4147 if (adapter
->phy_hang_count
> 1) {
4148 adapter
->phy_hang_count
= 0;
4149 schedule_work(&adapter
->reset_task
);
4154 * e1000_watchdog - Timer Call-back
4155 * @data: pointer to adapter cast into an unsigned long
4157 static void e1000_watchdog(unsigned long data
)
4159 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
4161 /* Do the rest outside of interrupt context */
4162 schedule_work(&adapter
->watchdog_task
);
4164 /* TODO: make this use queue_delayed_work() */
4167 static void e1000_watchdog_task(struct work_struct
*work
)
4169 struct e1000_adapter
*adapter
= container_of(work
,
4170 struct e1000_adapter
, watchdog_task
);
4171 struct net_device
*netdev
= adapter
->netdev
;
4172 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
4173 struct e1000_phy_info
*phy
= &adapter
->hw
.phy
;
4174 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4175 struct e1000_hw
*hw
= &adapter
->hw
;
4178 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4181 link
= e1000e_has_link(adapter
);
4182 if ((netif_carrier_ok(netdev
)) && link
) {
4183 /* Cancel scheduled suspend requests. */
4184 pm_runtime_resume(netdev
->dev
.parent
);
4186 e1000e_enable_receives(adapter
);
4190 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
4191 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
4192 e1000_update_mng_vlan(adapter
);
4195 if (!netif_carrier_ok(netdev
)) {
4198 /* Cancel scheduled suspend requests. */
4199 pm_runtime_resume(netdev
->dev
.parent
);
4201 /* update snapshot of PHY registers on LSC */
4202 e1000_phy_read_status(adapter
);
4203 mac
->ops
.get_link_up_info(&adapter
->hw
,
4204 &adapter
->link_speed
,
4205 &adapter
->link_duplex
);
4206 e1000_print_link_info(adapter
);
4208 * On supported PHYs, check for duplex mismatch only
4209 * if link has autonegotiated at 10/100 half
4211 if ((hw
->phy
.type
== e1000_phy_igp_3
||
4212 hw
->phy
.type
== e1000_phy_bm
) &&
4213 (hw
->mac
.autoneg
== true) &&
4214 (adapter
->link_speed
== SPEED_10
||
4215 adapter
->link_speed
== SPEED_100
) &&
4216 (adapter
->link_duplex
== HALF_DUPLEX
)) {
4219 e1e_rphy(hw
, PHY_AUTONEG_EXP
, &autoneg_exp
);
4221 if (!(autoneg_exp
& NWAY_ER_LP_NWAY_CAPS
))
4222 e_info("Autonegotiated half duplex but"
4223 " link partner cannot autoneg. "
4224 " Try forcing full duplex if "
4225 "link gets many collisions.\n");
4228 /* adjust timeout factor according to speed/duplex */
4229 adapter
->tx_timeout_factor
= 1;
4230 switch (adapter
->link_speed
) {
4233 adapter
->tx_timeout_factor
= 16;
4237 adapter
->tx_timeout_factor
= 10;
4242 * workaround: re-program speed mode bit after
4245 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
4248 tarc0
= er32(TARC(0));
4249 tarc0
&= ~SPEED_MODE_BIT
;
4250 ew32(TARC(0), tarc0
);
4254 * disable TSO for pcie and 10/100 speeds, to avoid
4255 * some hardware issues
4257 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
4258 switch (adapter
->link_speed
) {
4261 e_info("10/100 speed: disabling TSO\n");
4262 netdev
->features
&= ~NETIF_F_TSO
;
4263 netdev
->features
&= ~NETIF_F_TSO6
;
4266 netdev
->features
|= NETIF_F_TSO
;
4267 netdev
->features
|= NETIF_F_TSO6
;
4276 * enable transmits in the hardware, need to do this
4277 * after setting TARC(0)
4280 tctl
|= E1000_TCTL_EN
;
4284 * Perform any post-link-up configuration before
4285 * reporting link up.
4287 if (phy
->ops
.cfg_on_link_up
)
4288 phy
->ops
.cfg_on_link_up(hw
);
4290 netif_carrier_on(netdev
);
4292 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4293 mod_timer(&adapter
->phy_info_timer
,
4294 round_jiffies(jiffies
+ 2 * HZ
));
4297 if (netif_carrier_ok(netdev
)) {
4298 adapter
->link_speed
= 0;
4299 adapter
->link_duplex
= 0;
4300 /* Link status message must follow this format */
4301 printk(KERN_INFO
"e1000e: %s NIC Link is Down\n",
4302 adapter
->netdev
->name
);
4303 netif_carrier_off(netdev
);
4304 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4305 mod_timer(&adapter
->phy_info_timer
,
4306 round_jiffies(jiffies
+ 2 * HZ
));
4308 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
4309 schedule_work(&adapter
->reset_task
);
4311 pm_schedule_suspend(netdev
->dev
.parent
,
4317 spin_lock(&adapter
->stats64_lock
);
4318 e1000e_update_stats(adapter
);
4320 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
4321 adapter
->tpt_old
= adapter
->stats
.tpt
;
4322 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
4323 adapter
->colc_old
= adapter
->stats
.colc
;
4325 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
4326 adapter
->gorc_old
= adapter
->stats
.gorc
;
4327 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
4328 adapter
->gotc_old
= adapter
->stats
.gotc
;
4329 spin_unlock(&adapter
->stats64_lock
);
4331 e1000e_update_adaptive(&adapter
->hw
);
4333 if (!netif_carrier_ok(netdev
) &&
4334 (e1000_desc_unused(tx_ring
) + 1 < tx_ring
->count
)) {
4336 * We've lost link, so the controller stops DMA,
4337 * but we've got queued Tx work that's never going
4338 * to get done, so reset controller to flush Tx.
4339 * (Do the reset outside of interrupt context).
4341 schedule_work(&adapter
->reset_task
);
4342 /* return immediately since reset is imminent */
4346 /* Simple mode for Interrupt Throttle Rate (ITR) */
4347 if (adapter
->itr_setting
== 4) {
4349 * Symmetric Tx/Rx gets a reduced ITR=2000;
4350 * Total asymmetrical Tx or Rx gets ITR=8000;
4351 * everyone else is between 2000-8000.
4353 u32 goc
= (adapter
->gotc
+ adapter
->gorc
) / 10000;
4354 u32 dif
= (adapter
->gotc
> adapter
->gorc
?
4355 adapter
->gotc
- adapter
->gorc
:
4356 adapter
->gorc
- adapter
->gotc
) / 10000;
4357 u32 itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
4359 ew32(ITR
, 1000000000 / (itr
* 256));
4362 /* Cause software interrupt to ensure Rx ring is cleaned */
4363 if (adapter
->msix_entries
)
4364 ew32(ICS
, adapter
->rx_ring
->ims_val
);
4366 ew32(ICS
, E1000_ICS_RXDMT0
);
4368 /* flush pending descriptors to memory before detecting Tx hang */
4369 e1000e_flush_descriptors(adapter
);
4371 /* Force detection of hung controller every watchdog period */
4372 adapter
->detect_tx_hung
= 1;
4375 * With 82571 controllers, LAA may be overwritten due to controller
4376 * reset from the other port. Set the appropriate LAA in RAR[0]
4378 if (e1000e_get_laa_state_82571(hw
))
4379 e1000e_rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
4381 if (adapter
->flags2
& FLAG2_CHECK_PHY_HANG
)
4382 e1000e_check_82574_phy_workaround(adapter
);
4384 /* Reset the timer */
4385 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4386 mod_timer(&adapter
->watchdog_timer
,
4387 round_jiffies(jiffies
+ 2 * HZ
));
4390 #define E1000_TX_FLAGS_CSUM 0x00000001
4391 #define E1000_TX_FLAGS_VLAN 0x00000002
4392 #define E1000_TX_FLAGS_TSO 0x00000004
4393 #define E1000_TX_FLAGS_IPV4 0x00000008
4394 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
4395 #define E1000_TX_FLAGS_VLAN_SHIFT 16
4397 static int e1000_tso(struct e1000_adapter
*adapter
,
4398 struct sk_buff
*skb
)
4400 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4401 struct e1000_context_desc
*context_desc
;
4402 struct e1000_buffer
*buffer_info
;
4405 u16 ipcse
= 0, tucse
, mss
;
4406 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
4408 if (!skb_is_gso(skb
))
4411 if (skb_header_cloned(skb
)) {
4412 int err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
4418 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
4419 mss
= skb_shinfo(skb
)->gso_size
;
4420 if (skb
->protocol
== htons(ETH_P_IP
)) {
4421 struct iphdr
*iph
= ip_hdr(skb
);
4424 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
, iph
->daddr
,
4426 cmd_length
= E1000_TXD_CMD_IP
;
4427 ipcse
= skb_transport_offset(skb
) - 1;
4428 } else if (skb_is_gso_v6(skb
)) {
4429 ipv6_hdr(skb
)->payload_len
= 0;
4430 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
4431 &ipv6_hdr(skb
)->daddr
,
4435 ipcss
= skb_network_offset(skb
);
4436 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
4437 tucss
= skb_transport_offset(skb
);
4438 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
4441 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
4442 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
4444 i
= tx_ring
->next_to_use
;
4445 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
4446 buffer_info
= &tx_ring
->buffer_info
[i
];
4448 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
4449 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
4450 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
4451 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
4452 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
4453 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
4454 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
4455 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
4456 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
4458 buffer_info
->time_stamp
= jiffies
;
4459 buffer_info
->next_to_watch
= i
;
4462 if (i
== tx_ring
->count
)
4464 tx_ring
->next_to_use
= i
;
4469 static bool e1000_tx_csum(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
4471 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4472 struct e1000_context_desc
*context_desc
;
4473 struct e1000_buffer
*buffer_info
;
4476 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
4479 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
4482 if (skb
->protocol
== cpu_to_be16(ETH_P_8021Q
))
4483 protocol
= vlan_eth_hdr(skb
)->h_vlan_encapsulated_proto
;
4485 protocol
= skb
->protocol
;
4488 case cpu_to_be16(ETH_P_IP
):
4489 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
4490 cmd_len
|= E1000_TXD_CMD_TCP
;
4492 case cpu_to_be16(ETH_P_IPV6
):
4493 /* XXX not handling all IPV6 headers */
4494 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
4495 cmd_len
|= E1000_TXD_CMD_TCP
;
4498 if (unlikely(net_ratelimit()))
4499 e_warn("checksum_partial proto=%x!\n",
4500 be16_to_cpu(protocol
));
4504 css
= skb_checksum_start_offset(skb
);
4506 i
= tx_ring
->next_to_use
;
4507 buffer_info
= &tx_ring
->buffer_info
[i
];
4508 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
4510 context_desc
->lower_setup
.ip_config
= 0;
4511 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
4512 context_desc
->upper_setup
.tcp_fields
.tucso
=
4513 css
+ skb
->csum_offset
;
4514 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
4515 context_desc
->tcp_seg_setup
.data
= 0;
4516 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
4518 buffer_info
->time_stamp
= jiffies
;
4519 buffer_info
->next_to_watch
= i
;
4522 if (i
== tx_ring
->count
)
4524 tx_ring
->next_to_use
= i
;
4529 #define E1000_MAX_PER_TXD 8192
4530 #define E1000_MAX_TXD_PWR 12
4532 static int e1000_tx_map(struct e1000_adapter
*adapter
,
4533 struct sk_buff
*skb
, unsigned int first
,
4534 unsigned int max_per_txd
, unsigned int nr_frags
,
4537 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4538 struct pci_dev
*pdev
= adapter
->pdev
;
4539 struct e1000_buffer
*buffer_info
;
4540 unsigned int len
= skb_headlen(skb
);
4541 unsigned int offset
= 0, size
, count
= 0, i
;
4542 unsigned int f
, bytecount
, segs
;
4544 i
= tx_ring
->next_to_use
;
4547 buffer_info
= &tx_ring
->buffer_info
[i
];
4548 size
= min(len
, max_per_txd
);
4550 buffer_info
->length
= size
;
4551 buffer_info
->time_stamp
= jiffies
;
4552 buffer_info
->next_to_watch
= i
;
4553 buffer_info
->dma
= dma_map_single(&pdev
->dev
,
4555 size
, DMA_TO_DEVICE
);
4556 buffer_info
->mapped_as_page
= false;
4557 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
4566 if (i
== tx_ring
->count
)
4571 for (f
= 0; f
< nr_frags
; f
++) {
4572 struct skb_frag_struct
*frag
;
4574 frag
= &skb_shinfo(skb
)->frags
[f
];
4576 offset
= frag
->page_offset
;
4580 if (i
== tx_ring
->count
)
4583 buffer_info
= &tx_ring
->buffer_info
[i
];
4584 size
= min(len
, max_per_txd
);
4586 buffer_info
->length
= size
;
4587 buffer_info
->time_stamp
= jiffies
;
4588 buffer_info
->next_to_watch
= i
;
4589 buffer_info
->dma
= dma_map_page(&pdev
->dev
, frag
->page
,
4592 buffer_info
->mapped_as_page
= true;
4593 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
4602 segs
= skb_shinfo(skb
)->gso_segs
? : 1;
4603 /* multiply data chunks by size of headers */
4604 bytecount
= ((segs
- 1) * skb_headlen(skb
)) + skb
->len
;
4606 tx_ring
->buffer_info
[i
].skb
= skb
;
4607 tx_ring
->buffer_info
[i
].segs
= segs
;
4608 tx_ring
->buffer_info
[i
].bytecount
= bytecount
;
4609 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
4614 dev_err(&pdev
->dev
, "Tx DMA map failed\n");
4615 buffer_info
->dma
= 0;
4621 i
+= tx_ring
->count
;
4623 buffer_info
= &tx_ring
->buffer_info
[i
];
4624 e1000_put_txbuf(adapter
, buffer_info
);
4630 static void e1000_tx_queue(struct e1000_adapter
*adapter
,
4631 int tx_flags
, int count
)
4633 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4634 struct e1000_tx_desc
*tx_desc
= NULL
;
4635 struct e1000_buffer
*buffer_info
;
4636 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
4639 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
4640 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
4642 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
4644 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
4645 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
4648 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
4649 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
4650 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
4653 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
4654 txd_lower
|= E1000_TXD_CMD_VLE
;
4655 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
4658 i
= tx_ring
->next_to_use
;
4661 buffer_info
= &tx_ring
->buffer_info
[i
];
4662 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
4663 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4664 tx_desc
->lower
.data
=
4665 cpu_to_le32(txd_lower
| buffer_info
->length
);
4666 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
4669 if (i
== tx_ring
->count
)
4671 } while (--count
> 0);
4673 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
4676 * Force memory writes to complete before letting h/w
4677 * know there are new descriptors to fetch. (Only
4678 * applicable for weak-ordered memory model archs,
4683 tx_ring
->next_to_use
= i
;
4684 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
4686 * we need this if more than one processor can write to our tail
4687 * at a time, it synchronizes IO on IA64/Altix systems
4692 #define MINIMUM_DHCP_PACKET_SIZE 282
4693 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
4694 struct sk_buff
*skb
)
4696 struct e1000_hw
*hw
= &adapter
->hw
;
4699 if (vlan_tx_tag_present(skb
)) {
4700 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
4701 (adapter
->hw
.mng_cookie
.status
&
4702 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
4706 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
4709 if (((struct ethhdr
*) skb
->data
)->h_proto
!= htons(ETH_P_IP
))
4713 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+14);
4716 if (ip
->protocol
!= IPPROTO_UDP
)
4719 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
4720 if (ntohs(udp
->dest
) != 67)
4723 offset
= (u8
*)udp
+ 8 - skb
->data
;
4724 length
= skb
->len
- offset
;
4725 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
4731 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4733 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4735 netif_stop_queue(netdev
);
4737 * Herbert's original patch had:
4738 * smp_mb__after_netif_stop_queue();
4739 * but since that doesn't exist yet, just open code it.
4744 * We need to check again in a case another CPU has just
4745 * made room available.
4747 if (e1000_desc_unused(adapter
->tx_ring
) < size
)
4751 netif_start_queue(netdev
);
4752 ++adapter
->restart_queue
;
4756 static int e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4758 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4760 if (e1000_desc_unused(adapter
->tx_ring
) >= size
)
4762 return __e1000_maybe_stop_tx(netdev
, size
);
4765 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
4766 static netdev_tx_t
e1000_xmit_frame(struct sk_buff
*skb
,
4767 struct net_device
*netdev
)
4769 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4770 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4772 unsigned int max_per_txd
= E1000_MAX_PER_TXD
;
4773 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
4774 unsigned int tx_flags
= 0;
4775 unsigned int len
= skb_headlen(skb
);
4776 unsigned int nr_frags
;
4782 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
4783 dev_kfree_skb_any(skb
);
4784 return NETDEV_TX_OK
;
4787 if (skb
->len
<= 0) {
4788 dev_kfree_skb_any(skb
);
4789 return NETDEV_TX_OK
;
4792 mss
= skb_shinfo(skb
)->gso_size
;
4794 * The controller does a simple calculation to
4795 * make sure there is enough room in the FIFO before
4796 * initiating the DMA for each buffer. The calc is:
4797 * 4 = ceil(buffer len/mss). To make sure we don't
4798 * overrun the FIFO, adjust the max buffer len if mss
4803 max_per_txd
= min(mss
<< 2, max_per_txd
);
4804 max_txd_pwr
= fls(max_per_txd
) - 1;
4807 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
4808 * points to just header, pull a few bytes of payload from
4809 * frags into skb->data
4811 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
4813 * we do this workaround for ES2LAN, but it is un-necessary,
4814 * avoiding it could save a lot of cycles
4816 if (skb
->data_len
&& (hdr_len
== len
)) {
4817 unsigned int pull_size
;
4819 pull_size
= min((unsigned int)4, skb
->data_len
);
4820 if (!__pskb_pull_tail(skb
, pull_size
)) {
4821 e_err("__pskb_pull_tail failed.\n");
4822 dev_kfree_skb_any(skb
);
4823 return NETDEV_TX_OK
;
4825 len
= skb_headlen(skb
);
4829 /* reserve a descriptor for the offload context */
4830 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
4834 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
4836 nr_frags
= skb_shinfo(skb
)->nr_frags
;
4837 for (f
= 0; f
< nr_frags
; f
++)
4838 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
4841 if (adapter
->hw
.mac
.tx_pkt_filtering
)
4842 e1000_transfer_dhcp_info(adapter
, skb
);
4845 * need: count + 2 desc gap to keep tail from touching
4846 * head, otherwise try next time
4848 if (e1000_maybe_stop_tx(netdev
, count
+ 2))
4849 return NETDEV_TX_BUSY
;
4851 if (vlan_tx_tag_present(skb
)) {
4852 tx_flags
|= E1000_TX_FLAGS_VLAN
;
4853 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
4856 first
= tx_ring
->next_to_use
;
4858 tso
= e1000_tso(adapter
, skb
);
4860 dev_kfree_skb_any(skb
);
4861 return NETDEV_TX_OK
;
4865 tx_flags
|= E1000_TX_FLAGS_TSO
;
4866 else if (e1000_tx_csum(adapter
, skb
))
4867 tx_flags
|= E1000_TX_FLAGS_CSUM
;
4870 * Old method was to assume IPv4 packet by default if TSO was enabled.
4871 * 82571 hardware supports TSO capabilities for IPv6 as well...
4872 * no longer assume, we must.
4874 if (skb
->protocol
== htons(ETH_P_IP
))
4875 tx_flags
|= E1000_TX_FLAGS_IPV4
;
4877 /* if count is 0 then mapping error has occurred */
4878 count
= e1000_tx_map(adapter
, skb
, first
, max_per_txd
, nr_frags
, mss
);
4880 e1000_tx_queue(adapter
, tx_flags
, count
);
4881 /* Make sure there is space in the ring for the next send. */
4882 e1000_maybe_stop_tx(netdev
, MAX_SKB_FRAGS
+ 2);
4885 dev_kfree_skb_any(skb
);
4886 tx_ring
->buffer_info
[first
].time_stamp
= 0;
4887 tx_ring
->next_to_use
= first
;
4890 return NETDEV_TX_OK
;
4894 * e1000_tx_timeout - Respond to a Tx Hang
4895 * @netdev: network interface device structure
4897 static void e1000_tx_timeout(struct net_device
*netdev
)
4899 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4901 /* Do the reset outside of interrupt context */
4902 adapter
->tx_timeout_count
++;
4903 schedule_work(&adapter
->reset_task
);
4906 static void e1000_reset_task(struct work_struct
*work
)
4908 struct e1000_adapter
*adapter
;
4909 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
4911 /* don't run the task if already down */
4912 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4915 if (!((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
4916 (adapter
->flags
& FLAG_RX_RESTART_NOW
))) {
4917 e1000e_dump(adapter
);
4918 e_err("Reset adapter\n");
4920 e1000e_reinit_locked(adapter
);
4924 * e1000_get_stats64 - Get System Network Statistics
4925 * @netdev: network interface device structure
4926 * @stats: rtnl_link_stats64 pointer
4928 * Returns the address of the device statistics structure.
4930 struct rtnl_link_stats64
*e1000e_get_stats64(struct net_device
*netdev
,
4931 struct rtnl_link_stats64
*stats
)
4933 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4935 memset(stats
, 0, sizeof(struct rtnl_link_stats64
));
4936 spin_lock(&adapter
->stats64_lock
);
4937 e1000e_update_stats(adapter
);
4938 /* Fill out the OS statistics structure */
4939 stats
->rx_bytes
= adapter
->stats
.gorc
;
4940 stats
->rx_packets
= adapter
->stats
.gprc
;
4941 stats
->tx_bytes
= adapter
->stats
.gotc
;
4942 stats
->tx_packets
= adapter
->stats
.gptc
;
4943 stats
->multicast
= adapter
->stats
.mprc
;
4944 stats
->collisions
= adapter
->stats
.colc
;
4949 * RLEC on some newer hardware can be incorrect so build
4950 * our own version based on RUC and ROC
4952 stats
->rx_errors
= adapter
->stats
.rxerrc
+
4953 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
4954 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
4955 adapter
->stats
.cexterr
;
4956 stats
->rx_length_errors
= adapter
->stats
.ruc
+
4958 stats
->rx_crc_errors
= adapter
->stats
.crcerrs
;
4959 stats
->rx_frame_errors
= adapter
->stats
.algnerrc
;
4960 stats
->rx_missed_errors
= adapter
->stats
.mpc
;
4963 stats
->tx_errors
= adapter
->stats
.ecol
+
4964 adapter
->stats
.latecol
;
4965 stats
->tx_aborted_errors
= adapter
->stats
.ecol
;
4966 stats
->tx_window_errors
= adapter
->stats
.latecol
;
4967 stats
->tx_carrier_errors
= adapter
->stats
.tncrs
;
4969 /* Tx Dropped needs to be maintained elsewhere */
4971 spin_unlock(&adapter
->stats64_lock
);
4976 * e1000_change_mtu - Change the Maximum Transfer Unit
4977 * @netdev: network interface device structure
4978 * @new_mtu: new value for maximum frame size
4980 * Returns 0 on success, negative on failure
4982 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
4984 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4985 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4987 /* Jumbo frame support */
4988 if ((max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) &&
4989 !(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
4990 e_err("Jumbo Frames not supported.\n");
4994 /* Supported frame sizes */
4995 if ((new_mtu
< ETH_ZLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
) ||
4996 (max_frame
> adapter
->max_hw_frame_size
)) {
4997 e_err("Unsupported MTU setting\n");
5001 /* Jumbo frame workaround on 82579 requires CRC be stripped */
5002 if ((adapter
->hw
.mac
.type
== e1000_pch2lan
) &&
5003 !(adapter
->flags2
& FLAG2_CRC_STRIPPING
) &&
5004 (new_mtu
> ETH_DATA_LEN
)) {
5005 e_err("Jumbo Frames not supported on 82579 when CRC "
5006 "stripping is disabled.\n");
5010 /* 82573 Errata 17 */
5011 if (((adapter
->hw
.mac
.type
== e1000_82573
) ||
5012 (adapter
->hw
.mac
.type
== e1000_82574
)) &&
5013 (max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
)) {
5014 adapter
->flags2
|= FLAG2_DISABLE_ASPM_L1
;
5015 e1000e_disable_aspm(adapter
->pdev
, PCIE_LINK_STATE_L1
);
5018 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
5019 usleep_range(1000, 2000);
5020 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
5021 adapter
->max_frame_size
= max_frame
;
5022 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
5023 netdev
->mtu
= new_mtu
;
5024 if (netif_running(netdev
))
5025 e1000e_down(adapter
);
5028 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
5029 * means we reserve 2 more, this pushes us to allocate from the next
5031 * i.e. RXBUFFER_2048 --> size-4096 slab
5032 * However with the new *_jumbo_rx* routines, jumbo receives will use
5036 if (max_frame
<= 2048)
5037 adapter
->rx_buffer_len
= 2048;
5039 adapter
->rx_buffer_len
= 4096;
5041 /* adjust allocation if LPE protects us, and we aren't using SBP */
5042 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
5043 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
5044 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
5047 if (netif_running(netdev
))
5050 e1000e_reset(adapter
);
5052 clear_bit(__E1000_RESETTING
, &adapter
->state
);
5057 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
5060 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5061 struct mii_ioctl_data
*data
= if_mii(ifr
);
5063 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
5068 data
->phy_id
= adapter
->hw
.phy
.addr
;
5071 e1000_phy_read_status(adapter
);
5073 switch (data
->reg_num
& 0x1F) {
5075 data
->val_out
= adapter
->phy_regs
.bmcr
;
5078 data
->val_out
= adapter
->phy_regs
.bmsr
;
5081 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
5084 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
5087 data
->val_out
= adapter
->phy_regs
.advertise
;
5090 data
->val_out
= adapter
->phy_regs
.lpa
;
5093 data
->val_out
= adapter
->phy_regs
.expansion
;
5096 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
5099 data
->val_out
= adapter
->phy_regs
.stat1000
;
5102 data
->val_out
= adapter
->phy_regs
.estatus
;
5115 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
5121 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
5127 static int e1000_init_phy_wakeup(struct e1000_adapter
*adapter
, u32 wufc
)
5129 struct e1000_hw
*hw
= &adapter
->hw
;
5131 u16 phy_reg
, wuc_enable
;
5134 /* copy MAC RARs to PHY RARs */
5135 e1000_copy_rx_addrs_to_phy_ich8lan(hw
);
5137 retval
= hw
->phy
.ops
.acquire(hw
);
5139 e_err("Could not acquire PHY\n");
5143 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */
5144 retval
= e1000_enable_phy_wakeup_reg_access_bm(hw
, &wuc_enable
);
5148 /* copy MAC MTA to PHY MTA - only needed for pchlan */
5149 for (i
= 0; i
< adapter
->hw
.mac
.mta_reg_count
; i
++) {
5150 mac_reg
= E1000_READ_REG_ARRAY(hw
, E1000_MTA
, i
);
5151 hw
->phy
.ops
.write_reg_page(hw
, BM_MTA(i
),
5152 (u16
)(mac_reg
& 0xFFFF));
5153 hw
->phy
.ops
.write_reg_page(hw
, BM_MTA(i
) + 1,
5154 (u16
)((mac_reg
>> 16) & 0xFFFF));
5157 /* configure PHY Rx Control register */
5158 hw
->phy
.ops
.read_reg_page(&adapter
->hw
, BM_RCTL
, &phy_reg
);
5159 mac_reg
= er32(RCTL
);
5160 if (mac_reg
& E1000_RCTL_UPE
)
5161 phy_reg
|= BM_RCTL_UPE
;
5162 if (mac_reg
& E1000_RCTL_MPE
)
5163 phy_reg
|= BM_RCTL_MPE
;
5164 phy_reg
&= ~(BM_RCTL_MO_MASK
);
5165 if (mac_reg
& E1000_RCTL_MO_3
)
5166 phy_reg
|= (((mac_reg
& E1000_RCTL_MO_3
) >> E1000_RCTL_MO_SHIFT
)
5167 << BM_RCTL_MO_SHIFT
);
5168 if (mac_reg
& E1000_RCTL_BAM
)
5169 phy_reg
|= BM_RCTL_BAM
;
5170 if (mac_reg
& E1000_RCTL_PMCF
)
5171 phy_reg
|= BM_RCTL_PMCF
;
5172 mac_reg
= er32(CTRL
);
5173 if (mac_reg
& E1000_CTRL_RFCE
)
5174 phy_reg
|= BM_RCTL_RFCE
;
5175 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_RCTL
, phy_reg
);
5177 /* enable PHY wakeup in MAC register */
5179 ew32(WUC
, E1000_WUC_PHY_WAKE
| E1000_WUC_PME_EN
);
5181 /* configure and enable PHY wakeup in PHY registers */
5182 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_WUFC
, wufc
);
5183 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_WUC
, E1000_WUC_PME_EN
);
5185 /* activate PHY wakeup */
5186 wuc_enable
|= BM_WUC_ENABLE_BIT
| BM_WUC_HOST_WU_BIT
;
5187 retval
= e1000_disable_phy_wakeup_reg_access_bm(hw
, &wuc_enable
);
5189 e_err("Could not set PHY Host Wakeup bit\n");
5191 hw
->phy
.ops
.release(hw
);
5196 static int __e1000_shutdown(struct pci_dev
*pdev
, bool *enable_wake
,
5199 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5200 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5201 struct e1000_hw
*hw
= &adapter
->hw
;
5202 u32 ctrl
, ctrl_ext
, rctl
, status
;
5203 /* Runtime suspend should only enable wakeup for link changes */
5204 u32 wufc
= runtime
? E1000_WUFC_LNKC
: adapter
->wol
;
5207 netif_device_detach(netdev
);
5209 if (netif_running(netdev
)) {
5210 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
5211 e1000e_down(adapter
);
5212 e1000_free_irq(adapter
);
5214 e1000e_reset_interrupt_capability(adapter
);
5216 retval
= pci_save_state(pdev
);
5220 status
= er32(STATUS
);
5221 if (status
& E1000_STATUS_LU
)
5222 wufc
&= ~E1000_WUFC_LNKC
;
5225 e1000_setup_rctl(adapter
);
5226 e1000_set_multi(netdev
);
5228 /* turn on all-multi mode if wake on multicast is enabled */
5229 if (wufc
& E1000_WUFC_MC
) {
5231 rctl
|= E1000_RCTL_MPE
;
5236 /* advertise wake from D3Cold */
5237 #define E1000_CTRL_ADVD3WUC 0x00100000
5238 /* phy power management enable */
5239 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5240 ctrl
|= E1000_CTRL_ADVD3WUC
;
5241 if (!(adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
))
5242 ctrl
|= E1000_CTRL_EN_PHY_PWR_MGMT
;
5245 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
5246 adapter
->hw
.phy
.media_type
==
5247 e1000_media_type_internal_serdes
) {
5248 /* keep the laser running in D3 */
5249 ctrl_ext
= er32(CTRL_EXT
);
5250 ctrl_ext
|= E1000_CTRL_EXT_SDP3_DATA
;
5251 ew32(CTRL_EXT
, ctrl_ext
);
5254 if (adapter
->flags
& FLAG_IS_ICH
)
5255 e1000_suspend_workarounds_ich8lan(&adapter
->hw
);
5257 /* Allow time for pending master requests to run */
5258 e1000e_disable_pcie_master(&adapter
->hw
);
5260 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
5261 /* enable wakeup by the PHY */
5262 retval
= e1000_init_phy_wakeup(adapter
, wufc
);
5266 /* enable wakeup by the MAC */
5268 ew32(WUC
, E1000_WUC_PME_EN
);
5275 *enable_wake
= !!wufc
;
5277 /* make sure adapter isn't asleep if manageability is enabled */
5278 if ((adapter
->flags
& FLAG_MNG_PT_ENABLED
) ||
5279 (hw
->mac
.ops
.check_mng_mode(hw
)))
5280 *enable_wake
= true;
5282 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
)
5283 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
5286 * Release control of h/w to f/w. If f/w is AMT enabled, this
5287 * would have already happened in close and is redundant.
5289 e1000e_release_hw_control(adapter
);
5291 pci_disable_device(pdev
);
5296 static void e1000_power_off(struct pci_dev
*pdev
, bool sleep
, bool wake
)
5298 if (sleep
&& wake
) {
5299 pci_prepare_to_sleep(pdev
);
5303 pci_wake_from_d3(pdev
, wake
);
5304 pci_set_power_state(pdev
, PCI_D3hot
);
5307 static void e1000_complete_shutdown(struct pci_dev
*pdev
, bool sleep
,
5310 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5311 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5314 * The pci-e switch on some quad port adapters will report a
5315 * correctable error when the MAC transitions from D0 to D3. To
5316 * prevent this we need to mask off the correctable errors on the
5317 * downstream port of the pci-e switch.
5319 if (adapter
->flags
& FLAG_IS_QUAD_PORT
) {
5320 struct pci_dev
*us_dev
= pdev
->bus
->self
;
5321 int pos
= pci_pcie_cap(us_dev
);
5324 pci_read_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, &devctl
);
5325 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
,
5326 (devctl
& ~PCI_EXP_DEVCTL_CERE
));
5328 e1000_power_off(pdev
, sleep
, wake
);
5330 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, devctl
);
5332 e1000_power_off(pdev
, sleep
, wake
);
5336 #ifdef CONFIG_PCIEASPM
5337 static void __e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5339 pci_disable_link_state_locked(pdev
, state
);
5342 static void __e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5348 * Both device and parent should have the same ASPM setting.
5349 * Disable ASPM in downstream component first and then upstream.
5351 pos
= pci_pcie_cap(pdev
);
5352 pci_read_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, ®16
);
5354 pci_write_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, reg16
);
5356 if (!pdev
->bus
->self
)
5359 pos
= pci_pcie_cap(pdev
->bus
->self
);
5360 pci_read_config_word(pdev
->bus
->self
, pos
+ PCI_EXP_LNKCTL
, ®16
);
5362 pci_write_config_word(pdev
->bus
->self
, pos
+ PCI_EXP_LNKCTL
, reg16
);
5365 static void e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5367 dev_info(&pdev
->dev
, "Disabling ASPM %s %s\n",
5368 (state
& PCIE_LINK_STATE_L0S
) ? "L0s" : "",
5369 (state
& PCIE_LINK_STATE_L1
) ? "L1" : "");
5371 __e1000e_disable_aspm(pdev
, state
);
5375 static bool e1000e_pm_ready(struct e1000_adapter
*adapter
)
5377 return !!adapter
->tx_ring
->buffer_info
;
5380 static int __e1000_resume(struct pci_dev
*pdev
)
5382 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5383 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5384 struct e1000_hw
*hw
= &adapter
->hw
;
5385 u16 aspm_disable_flag
= 0;
5388 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
5389 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
5390 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5391 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
5392 if (aspm_disable_flag
)
5393 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
5395 pci_set_power_state(pdev
, PCI_D0
);
5396 pci_restore_state(pdev
);
5397 pci_save_state(pdev
);
5399 e1000e_set_interrupt_capability(adapter
);
5400 if (netif_running(netdev
)) {
5401 err
= e1000_request_irq(adapter
);
5406 if (hw
->mac
.type
== e1000_pch2lan
)
5407 e1000_resume_workarounds_pchlan(&adapter
->hw
);
5409 e1000e_power_up_phy(adapter
);
5411 /* report the system wakeup cause from S3/S4 */
5412 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
5415 e1e_rphy(&adapter
->hw
, BM_WUS
, &phy_data
);
5417 e_info("PHY Wakeup cause - %s\n",
5418 phy_data
& E1000_WUS_EX
? "Unicast Packet" :
5419 phy_data
& E1000_WUS_MC
? "Multicast Packet" :
5420 phy_data
& E1000_WUS_BC
? "Broadcast Packet" :
5421 phy_data
& E1000_WUS_MAG
? "Magic Packet" :
5422 phy_data
& E1000_WUS_LNKC
? "Link Status "
5423 " Change" : "other");
5425 e1e_wphy(&adapter
->hw
, BM_WUS
, ~0);
5427 u32 wus
= er32(WUS
);
5429 e_info("MAC Wakeup cause - %s\n",
5430 wus
& E1000_WUS_EX
? "Unicast Packet" :
5431 wus
& E1000_WUS_MC
? "Multicast Packet" :
5432 wus
& E1000_WUS_BC
? "Broadcast Packet" :
5433 wus
& E1000_WUS_MAG
? "Magic Packet" :
5434 wus
& E1000_WUS_LNKC
? "Link Status Change" :
5440 e1000e_reset(adapter
);
5442 e1000_init_manageability_pt(adapter
);
5444 if (netif_running(netdev
))
5447 netif_device_attach(netdev
);
5450 * If the controller has AMT, do not set DRV_LOAD until the interface
5451 * is up. For all other cases, let the f/w know that the h/w is now
5452 * under the control of the driver.
5454 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5455 e1000e_get_hw_control(adapter
);
5460 #ifdef CONFIG_PM_SLEEP
5461 static int e1000_suspend(struct device
*dev
)
5463 struct pci_dev
*pdev
= to_pci_dev(dev
);
5467 retval
= __e1000_shutdown(pdev
, &wake
, false);
5469 e1000_complete_shutdown(pdev
, true, wake
);
5474 static int e1000_resume(struct device
*dev
)
5476 struct pci_dev
*pdev
= to_pci_dev(dev
);
5477 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5478 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5480 if (e1000e_pm_ready(adapter
))
5481 adapter
->idle_check
= true;
5483 return __e1000_resume(pdev
);
5485 #endif /* CONFIG_PM_SLEEP */
5487 #ifdef CONFIG_PM_RUNTIME
5488 static int e1000_runtime_suspend(struct device
*dev
)
5490 struct pci_dev
*pdev
= to_pci_dev(dev
);
5491 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5492 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5494 if (e1000e_pm_ready(adapter
)) {
5497 __e1000_shutdown(pdev
, &wake
, true);
5503 static int e1000_idle(struct device
*dev
)
5505 struct pci_dev
*pdev
= to_pci_dev(dev
);
5506 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5507 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5509 if (!e1000e_pm_ready(adapter
))
5512 if (adapter
->idle_check
) {
5513 adapter
->idle_check
= false;
5514 if (!e1000e_has_link(adapter
))
5515 pm_schedule_suspend(dev
, MSEC_PER_SEC
);
5521 static int e1000_runtime_resume(struct device
*dev
)
5523 struct pci_dev
*pdev
= to_pci_dev(dev
);
5524 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5525 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5527 if (!e1000e_pm_ready(adapter
))
5530 adapter
->idle_check
= !dev
->power
.runtime_auto
;
5531 return __e1000_resume(pdev
);
5533 #endif /* CONFIG_PM_RUNTIME */
5534 #endif /* CONFIG_PM */
5536 static void e1000_shutdown(struct pci_dev
*pdev
)
5540 __e1000_shutdown(pdev
, &wake
, false);
5542 if (system_state
== SYSTEM_POWER_OFF
)
5543 e1000_complete_shutdown(pdev
, false, wake
);
5546 #ifdef CONFIG_NET_POLL_CONTROLLER
5548 static irqreturn_t
e1000_intr_msix(int irq
, void *data
)
5550 struct net_device
*netdev
= data
;
5551 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5553 if (adapter
->msix_entries
) {
5554 int vector
, msix_irq
;
5557 msix_irq
= adapter
->msix_entries
[vector
].vector
;
5558 disable_irq(msix_irq
);
5559 e1000_intr_msix_rx(msix_irq
, netdev
);
5560 enable_irq(msix_irq
);
5563 msix_irq
= adapter
->msix_entries
[vector
].vector
;
5564 disable_irq(msix_irq
);
5565 e1000_intr_msix_tx(msix_irq
, netdev
);
5566 enable_irq(msix_irq
);
5569 msix_irq
= adapter
->msix_entries
[vector
].vector
;
5570 disable_irq(msix_irq
);
5571 e1000_msix_other(msix_irq
, netdev
);
5572 enable_irq(msix_irq
);
5579 * Polling 'interrupt' - used by things like netconsole to send skbs
5580 * without having to re-enable interrupts. It's not called while
5581 * the interrupt routine is executing.
5583 static void e1000_netpoll(struct net_device
*netdev
)
5585 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5587 switch (adapter
->int_mode
) {
5588 case E1000E_INT_MODE_MSIX
:
5589 e1000_intr_msix(adapter
->pdev
->irq
, netdev
);
5591 case E1000E_INT_MODE_MSI
:
5592 disable_irq(adapter
->pdev
->irq
);
5593 e1000_intr_msi(adapter
->pdev
->irq
, netdev
);
5594 enable_irq(adapter
->pdev
->irq
);
5596 default: /* E1000E_INT_MODE_LEGACY */
5597 disable_irq(adapter
->pdev
->irq
);
5598 e1000_intr(adapter
->pdev
->irq
, netdev
);
5599 enable_irq(adapter
->pdev
->irq
);
5606 * e1000_io_error_detected - called when PCI error is detected
5607 * @pdev: Pointer to PCI device
5608 * @state: The current pci connection state
5610 * This function is called after a PCI bus error affecting
5611 * this device has been detected.
5613 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
5614 pci_channel_state_t state
)
5616 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5617 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5619 netif_device_detach(netdev
);
5621 if (state
== pci_channel_io_perm_failure
)
5622 return PCI_ERS_RESULT_DISCONNECT
;
5624 if (netif_running(netdev
))
5625 e1000e_down(adapter
);
5626 pci_disable_device(pdev
);
5628 /* Request a slot slot reset. */
5629 return PCI_ERS_RESULT_NEED_RESET
;
5633 * e1000_io_slot_reset - called after the pci bus has been reset.
5634 * @pdev: Pointer to PCI device
5636 * Restart the card from scratch, as if from a cold-boot. Implementation
5637 * resembles the first-half of the e1000_resume routine.
5639 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
5641 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5642 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5643 struct e1000_hw
*hw
= &adapter
->hw
;
5644 u16 aspm_disable_flag
= 0;
5646 pci_ers_result_t result
;
5648 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
5649 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
5650 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5651 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
5652 if (aspm_disable_flag
)
5653 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
5655 err
= pci_enable_device_mem(pdev
);
5658 "Cannot re-enable PCI device after reset.\n");
5659 result
= PCI_ERS_RESULT_DISCONNECT
;
5661 pci_set_master(pdev
);
5662 pdev
->state_saved
= true;
5663 pci_restore_state(pdev
);
5665 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5666 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5668 e1000e_reset(adapter
);
5670 result
= PCI_ERS_RESULT_RECOVERED
;
5673 pci_cleanup_aer_uncorrect_error_status(pdev
);
5679 * e1000_io_resume - called when traffic can start flowing again.
5680 * @pdev: Pointer to PCI device
5682 * This callback is called when the error recovery driver tells us that
5683 * its OK to resume normal operation. Implementation resembles the
5684 * second-half of the e1000_resume routine.
5686 static void e1000_io_resume(struct pci_dev
*pdev
)
5688 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5689 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5691 e1000_init_manageability_pt(adapter
);
5693 if (netif_running(netdev
)) {
5694 if (e1000e_up(adapter
)) {
5696 "can't bring device back up after reset\n");
5701 netif_device_attach(netdev
);
5704 * If the controller has AMT, do not set DRV_LOAD until the interface
5705 * is up. For all other cases, let the f/w know that the h/w is now
5706 * under the control of the driver.
5708 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5709 e1000e_get_hw_control(adapter
);
5713 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
5715 struct e1000_hw
*hw
= &adapter
->hw
;
5716 struct net_device
*netdev
= adapter
->netdev
;
5718 u8 pba_str
[E1000_PBANUM_LENGTH
];
5720 /* print bus type/speed/width info */
5721 e_info("(PCI Express:2.5GT/s:%s) %pM\n",
5723 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
5727 e_info("Intel(R) PRO/%s Network Connection\n",
5728 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
5729 ret_val
= e1000_read_pba_string_generic(hw
, pba_str
,
5730 E1000_PBANUM_LENGTH
);
5732 strncpy((char *)pba_str
, "Unknown", sizeof(pba_str
) - 1);
5733 e_info("MAC: %d, PHY: %d, PBA No: %s\n",
5734 hw
->mac
.type
, hw
->phy
.type
, pba_str
);
5737 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
5739 struct e1000_hw
*hw
= &adapter
->hw
;
5743 if (hw
->mac
.type
!= e1000_82573
)
5746 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
5747 if (!ret_val
&& (!(le16_to_cpu(buf
) & (1 << 0)))) {
5748 /* Deep Smart Power Down (DSPD) */
5749 dev_warn(&adapter
->pdev
->dev
,
5750 "Warning: detected DSPD enabled in EEPROM\n");
5754 static const struct net_device_ops e1000e_netdev_ops
= {
5755 .ndo_open
= e1000_open
,
5756 .ndo_stop
= e1000_close
,
5757 .ndo_start_xmit
= e1000_xmit_frame
,
5758 .ndo_get_stats64
= e1000e_get_stats64
,
5759 .ndo_set_multicast_list
= e1000_set_multi
,
5760 .ndo_set_mac_address
= e1000_set_mac
,
5761 .ndo_change_mtu
= e1000_change_mtu
,
5762 .ndo_do_ioctl
= e1000_ioctl
,
5763 .ndo_tx_timeout
= e1000_tx_timeout
,
5764 .ndo_validate_addr
= eth_validate_addr
,
5766 .ndo_vlan_rx_add_vid
= e1000_vlan_rx_add_vid
,
5767 .ndo_vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
,
5768 #ifdef CONFIG_NET_POLL_CONTROLLER
5769 .ndo_poll_controller
= e1000_netpoll
,
5774 * e1000_probe - Device Initialization Routine
5775 * @pdev: PCI device information struct
5776 * @ent: entry in e1000_pci_tbl
5778 * Returns 0 on success, negative on failure
5780 * e1000_probe initializes an adapter identified by a pci_dev structure.
5781 * The OS initialization, configuring of the adapter private structure,
5782 * and a hardware reset occur.
5784 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
5785 const struct pci_device_id
*ent
)
5787 struct net_device
*netdev
;
5788 struct e1000_adapter
*adapter
;
5789 struct e1000_hw
*hw
;
5790 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
5791 resource_size_t mmio_start
, mmio_len
;
5792 resource_size_t flash_start
, flash_len
;
5794 static int cards_found
;
5795 u16 aspm_disable_flag
= 0;
5796 int i
, err
, pci_using_dac
;
5797 u16 eeprom_data
= 0;
5798 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
5800 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
5801 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
5802 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5803 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
5804 if (aspm_disable_flag
)
5805 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
5807 err
= pci_enable_device_mem(pdev
);
5812 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(64));
5814 err
= dma_set_coherent_mask(&pdev
->dev
, DMA_BIT_MASK(64));
5818 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(32));
5820 err
= dma_set_coherent_mask(&pdev
->dev
,
5823 dev_err(&pdev
->dev
, "No usable DMA "
5824 "configuration, aborting\n");
5830 err
= pci_request_selected_regions_exclusive(pdev
,
5831 pci_select_bars(pdev
, IORESOURCE_MEM
),
5832 e1000e_driver_name
);
5836 /* AER (Advanced Error Reporting) hooks */
5837 pci_enable_pcie_error_reporting(pdev
);
5839 pci_set_master(pdev
);
5840 /* PCI config space info */
5841 err
= pci_save_state(pdev
);
5843 goto err_alloc_etherdev
;
5846 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
5848 goto err_alloc_etherdev
;
5850 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
5852 netdev
->irq
= pdev
->irq
;
5854 pci_set_drvdata(pdev
, netdev
);
5855 adapter
= netdev_priv(netdev
);
5857 adapter
->netdev
= netdev
;
5858 adapter
->pdev
= pdev
;
5860 adapter
->pba
= ei
->pba
;
5861 adapter
->flags
= ei
->flags
;
5862 adapter
->flags2
= ei
->flags2
;
5863 adapter
->hw
.adapter
= adapter
;
5864 adapter
->hw
.mac
.type
= ei
->mac
;
5865 adapter
->max_hw_frame_size
= ei
->max_hw_frame_size
;
5866 adapter
->msg_enable
= (1 << NETIF_MSG_DRV
| NETIF_MSG_PROBE
) - 1;
5868 mmio_start
= pci_resource_start(pdev
, 0);
5869 mmio_len
= pci_resource_len(pdev
, 0);
5872 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
5873 if (!adapter
->hw
.hw_addr
)
5876 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
5877 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
5878 flash_start
= pci_resource_start(pdev
, 1);
5879 flash_len
= pci_resource_len(pdev
, 1);
5880 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
5881 if (!adapter
->hw
.flash_address
)
5885 /* construct the net_device struct */
5886 netdev
->netdev_ops
= &e1000e_netdev_ops
;
5887 e1000e_set_ethtool_ops(netdev
);
5888 netdev
->watchdog_timeo
= 5 * HZ
;
5889 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
5890 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
5892 netdev
->mem_start
= mmio_start
;
5893 netdev
->mem_end
= mmio_start
+ mmio_len
;
5895 adapter
->bd_number
= cards_found
++;
5897 e1000e_check_options(adapter
);
5899 /* setup adapter struct */
5900 err
= e1000_sw_init(adapter
);
5904 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
5905 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
5906 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
5908 err
= ei
->get_variants(adapter
);
5912 if ((adapter
->flags
& FLAG_IS_ICH
) &&
5913 (adapter
->flags
& FLAG_READ_ONLY_NVM
))
5914 e1000e_write_protect_nvm_ich8lan(&adapter
->hw
);
5916 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
5918 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
5920 /* Copper options */
5921 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
5922 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
5923 adapter
->hw
.phy
.disable_polarity_correction
= 0;
5924 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
5927 if (e1000_check_reset_block(&adapter
->hw
))
5928 e_info("PHY reset is blocked due to SOL/IDER session.\n");
5930 netdev
->features
= NETIF_F_SG
|
5932 NETIF_F_HW_VLAN_TX
|
5935 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
5936 netdev
->features
|= NETIF_F_HW_VLAN_FILTER
;
5938 netdev
->features
|= NETIF_F_TSO
;
5939 netdev
->features
|= NETIF_F_TSO6
;
5941 netdev
->vlan_features
|= NETIF_F_TSO
;
5942 netdev
->vlan_features
|= NETIF_F_TSO6
;
5943 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
5944 netdev
->vlan_features
|= NETIF_F_SG
;
5946 if (pci_using_dac
) {
5947 netdev
->features
|= NETIF_F_HIGHDMA
;
5948 netdev
->vlan_features
|= NETIF_F_HIGHDMA
;
5951 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
5952 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
5955 * before reading the NVM, reset the controller to
5956 * put the device in a known good starting state
5958 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
5961 * systems with ASPM and others may see the checksum fail on the first
5962 * attempt. Let's give it a few tries
5965 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
5968 e_err("The NVM Checksum Is Not Valid\n");
5974 e1000_eeprom_checks(adapter
);
5976 /* copy the MAC address */
5977 if (e1000e_read_mac_addr(&adapter
->hw
))
5978 e_err("NVM Read Error while reading MAC address\n");
5980 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
5981 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
5983 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
5984 e_err("Invalid MAC Address: %pM\n", netdev
->perm_addr
);
5989 init_timer(&adapter
->watchdog_timer
);
5990 adapter
->watchdog_timer
.function
= e1000_watchdog
;
5991 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
5993 init_timer(&adapter
->phy_info_timer
);
5994 adapter
->phy_info_timer
.function
= e1000_update_phy_info
;
5995 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
5997 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
5998 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
5999 INIT_WORK(&adapter
->downshift_task
, e1000e_downshift_workaround
);
6000 INIT_WORK(&adapter
->update_phy_task
, e1000e_update_phy_task
);
6001 INIT_WORK(&adapter
->print_hang_task
, e1000_print_hw_hang
);
6003 /* Initialize link parameters. User can change them with ethtool */
6004 adapter
->hw
.mac
.autoneg
= 1;
6005 adapter
->fc_autoneg
= 1;
6006 adapter
->hw
.fc
.requested_mode
= e1000_fc_default
;
6007 adapter
->hw
.fc
.current_mode
= e1000_fc_default
;
6008 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
6010 /* ring size defaults */
6011 adapter
->rx_ring
->count
= 256;
6012 adapter
->tx_ring
->count
= 256;
6015 * Initial Wake on LAN setting - If APM wake is enabled in
6016 * the EEPROM, enable the ACPI Magic Packet filter
6018 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
6019 /* APME bit in EEPROM is mapped to WUC.APME */
6020 eeprom_data
= er32(WUC
);
6021 eeprom_apme_mask
= E1000_WUC_APME
;
6022 if ((hw
->mac
.type
> e1000_ich10lan
) &&
6023 (eeprom_data
& E1000_WUC_PHY_WAKE
))
6024 adapter
->flags2
|= FLAG2_HAS_PHY_WAKEUP
;
6025 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
6026 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
6027 (adapter
->hw
.bus
.func
== 1))
6028 e1000_read_nvm(&adapter
->hw
,
6029 NVM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
6031 e1000_read_nvm(&adapter
->hw
,
6032 NVM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
6035 /* fetch WoL from EEPROM */
6036 if (eeprom_data
& eeprom_apme_mask
)
6037 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
6040 * now that we have the eeprom settings, apply the special cases
6041 * where the eeprom may be wrong or the board simply won't support
6042 * wake on lan on a particular port
6044 if (!(adapter
->flags
& FLAG_HAS_WOL
))
6045 adapter
->eeprom_wol
= 0;
6047 /* initialize the wol settings based on the eeprom settings */
6048 adapter
->wol
= adapter
->eeprom_wol
;
6049 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
6051 /* save off EEPROM version number */
6052 e1000_read_nvm(&adapter
->hw
, 5, 1, &adapter
->eeprom_vers
);
6054 /* reset the hardware with the new settings */
6055 e1000e_reset(adapter
);
6058 * If the controller has AMT, do not set DRV_LOAD until the interface
6059 * is up. For all other cases, let the f/w know that the h/w is now
6060 * under the control of the driver.
6062 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6063 e1000e_get_hw_control(adapter
);
6065 strncpy(netdev
->name
, "eth%d", sizeof(netdev
->name
) - 1);
6066 err
= register_netdev(netdev
);
6070 /* carrier off reporting is important to ethtool even BEFORE open */
6071 netif_carrier_off(netdev
);
6073 e1000_print_device_info(adapter
);
6075 if (pci_dev_run_wake(pdev
))
6076 pm_runtime_put_noidle(&pdev
->dev
);
6081 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6082 e1000e_release_hw_control(adapter
);
6084 if (!e1000_check_reset_block(&adapter
->hw
))
6085 e1000_phy_hw_reset(&adapter
->hw
);
6087 kfree(adapter
->tx_ring
);
6088 kfree(adapter
->rx_ring
);
6090 if (adapter
->hw
.flash_address
)
6091 iounmap(adapter
->hw
.flash_address
);
6092 e1000e_reset_interrupt_capability(adapter
);
6094 iounmap(adapter
->hw
.hw_addr
);
6096 free_netdev(netdev
);
6098 pci_release_selected_regions(pdev
,
6099 pci_select_bars(pdev
, IORESOURCE_MEM
));
6102 pci_disable_device(pdev
);
6107 * e1000_remove - Device Removal Routine
6108 * @pdev: PCI device information struct
6110 * e1000_remove is called by the PCI subsystem to alert the driver
6111 * that it should release a PCI device. The could be caused by a
6112 * Hot-Plug event, or because the driver is going to be removed from
6115 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
6117 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6118 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6119 bool down
= test_bit(__E1000_DOWN
, &adapter
->state
);
6122 * The timers may be rescheduled, so explicitly disable them
6123 * from being rescheduled.
6126 set_bit(__E1000_DOWN
, &adapter
->state
);
6127 del_timer_sync(&adapter
->watchdog_timer
);
6128 del_timer_sync(&adapter
->phy_info_timer
);
6130 cancel_work_sync(&adapter
->reset_task
);
6131 cancel_work_sync(&adapter
->watchdog_task
);
6132 cancel_work_sync(&adapter
->downshift_task
);
6133 cancel_work_sync(&adapter
->update_phy_task
);
6134 cancel_work_sync(&adapter
->print_hang_task
);
6136 if (!(netdev
->flags
& IFF_UP
))
6137 e1000_power_down_phy(adapter
);
6139 /* Don't lie to e1000_close() down the road. */
6141 clear_bit(__E1000_DOWN
, &adapter
->state
);
6142 unregister_netdev(netdev
);
6144 if (pci_dev_run_wake(pdev
))
6145 pm_runtime_get_noresume(&pdev
->dev
);
6148 * Release control of h/w to f/w. If f/w is AMT enabled, this
6149 * would have already happened in close and is redundant.
6151 e1000e_release_hw_control(adapter
);
6153 e1000e_reset_interrupt_capability(adapter
);
6154 kfree(adapter
->tx_ring
);
6155 kfree(adapter
->rx_ring
);
6157 iounmap(adapter
->hw
.hw_addr
);
6158 if (adapter
->hw
.flash_address
)
6159 iounmap(adapter
->hw
.flash_address
);
6160 pci_release_selected_regions(pdev
,
6161 pci_select_bars(pdev
, IORESOURCE_MEM
));
6163 free_netdev(netdev
);
6166 pci_disable_pcie_error_reporting(pdev
);
6168 pci_disable_device(pdev
);
6171 /* PCI Error Recovery (ERS) */
6172 static struct pci_error_handlers e1000_err_handler
= {
6173 .error_detected
= e1000_io_error_detected
,
6174 .slot_reset
= e1000_io_slot_reset
,
6175 .resume
= e1000_io_resume
,
6178 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl
) = {
6179 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
6180 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
6181 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
6182 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
), board_82571
},
6183 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
6184 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
6185 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
6186 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
6187 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
6189 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
6190 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
6191 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
6192 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
6194 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
6195 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
6196 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
6198 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574L
), board_82574
},
6199 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574LA
), board_82574
},
6200 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82583V
), board_82583
},
6202 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
6203 board_80003es2lan
},
6204 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
6205 board_80003es2lan
},
6206 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
6207 board_80003es2lan
},
6208 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
6209 board_80003es2lan
},
6211 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
6212 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
6213 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
6214 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
6215 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
6216 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
6217 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
6218 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_82567V_3
), board_ich8lan
},
6220 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
6221 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
6222 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
6223 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
6224 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
6225 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_BM
), board_ich9lan
},
6226 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
6227 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
6228 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
6230 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
6231 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
6232 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
6234 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LM
), board_ich10lan
},
6235 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LF
), board_ich10lan
},
6236 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_V
), board_ich10lan
},
6238 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LM
), board_pchlan
},
6239 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LC
), board_pchlan
},
6240 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DM
), board_pchlan
},
6241 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DC
), board_pchlan
},
6243 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_LM
), board_pch2lan
},
6244 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_V
), board_pch2lan
},
6246 { } /* terminate list */
6248 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
6251 static const struct dev_pm_ops e1000_pm_ops
= {
6252 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend
, e1000_resume
)
6253 SET_RUNTIME_PM_OPS(e1000_runtime_suspend
,
6254 e1000_runtime_resume
, e1000_idle
)
6258 /* PCI Device API Driver */
6259 static struct pci_driver e1000_driver
= {
6260 .name
= e1000e_driver_name
,
6261 .id_table
= e1000_pci_tbl
,
6262 .probe
= e1000_probe
,
6263 .remove
= __devexit_p(e1000_remove
),
6265 .driver
.pm
= &e1000_pm_ops
,
6267 .shutdown
= e1000_shutdown
,
6268 .err_handler
= &e1000_err_handler
6272 * e1000_init_module - Driver Registration Routine
6274 * e1000_init_module is the first routine called when the driver is
6275 * loaded. All it does is register with the PCI subsystem.
6277 static int __init
e1000_init_module(void)
6280 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
6281 e1000e_driver_version
);
6282 pr_info("Copyright(c) 1999 - 2011 Intel Corporation.\n");
6283 ret
= pci_register_driver(&e1000_driver
);
6287 module_init(e1000_init_module
);
6290 * e1000_exit_module - Driver Exit Cleanup Routine
6292 * e1000_exit_module is called just before the driver is removed
6295 static void __exit
e1000_exit_module(void)
6297 pci_unregister_driver(&e1000_driver
);
6299 module_exit(e1000_exit_module
);
6302 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
6303 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
6304 MODULE_LICENSE("GPL");
6305 MODULE_VERSION(DRV_VERSION
);