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/pci.h>
35 #include <linux/vmalloc.h>
36 #include <linux/pagemap.h>
37 #include <linux/delay.h>
38 #include <linux/netdevice.h>
39 #include <linux/tcp.h>
40 #include <linux/ipv6.h>
41 #include <linux/slab.h>
42 #include <net/checksum.h>
43 #include <net/ip6_checksum.h>
44 #include <linux/mii.h>
45 #include <linux/ethtool.h>
46 #include <linux/if_vlan.h>
47 #include <linux/cpu.h>
48 #include <linux/smp.h>
49 #include <linux/pm_qos_params.h>
50 #include <linux/pm_runtime.h>
51 #include <linux/aer.h>
55 #define DRV_EXTRAVERSION "-k2"
57 #define DRV_VERSION "1.3.10" DRV_EXTRAVERSION
58 char e1000e_driver_name
[] = "e1000e";
59 const char e1000e_driver_version
[] = DRV_VERSION
;
61 static void e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
);
63 static const struct e1000_info
*e1000_info_tbl
[] = {
64 [board_82571
] = &e1000_82571_info
,
65 [board_82572
] = &e1000_82572_info
,
66 [board_82573
] = &e1000_82573_info
,
67 [board_82574
] = &e1000_82574_info
,
68 [board_82583
] = &e1000_82583_info
,
69 [board_80003es2lan
] = &e1000_es2_info
,
70 [board_ich8lan
] = &e1000_ich8_info
,
71 [board_ich9lan
] = &e1000_ich9_info
,
72 [board_ich10lan
] = &e1000_ich10_info
,
73 [board_pchlan
] = &e1000_pch_info
,
74 [board_pch2lan
] = &e1000_pch2_info
,
77 struct e1000_reg_info
{
82 #define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */
83 #define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */
84 #define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */
85 #define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */
86 #define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */
88 #define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */
89 #define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */
90 #define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */
91 #define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */
92 #define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */
94 static const struct e1000_reg_info e1000_reg_info_tbl
[] = {
96 /* General Registers */
98 {E1000_STATUS
, "STATUS"},
99 {E1000_CTRL_EXT
, "CTRL_EXT"},
101 /* Interrupt Registers */
105 {E1000_RCTL
, "RCTL"},
106 {E1000_RDLEN
, "RDLEN"},
109 {E1000_RDTR
, "RDTR"},
110 {E1000_RXDCTL(0), "RXDCTL"},
112 {E1000_RDBAL
, "RDBAL"},
113 {E1000_RDBAH
, "RDBAH"},
114 {E1000_RDFH
, "RDFH"},
115 {E1000_RDFT
, "RDFT"},
116 {E1000_RDFHS
, "RDFHS"},
117 {E1000_RDFTS
, "RDFTS"},
118 {E1000_RDFPC
, "RDFPC"},
121 {E1000_TCTL
, "TCTL"},
122 {E1000_TDBAL
, "TDBAL"},
123 {E1000_TDBAH
, "TDBAH"},
124 {E1000_TDLEN
, "TDLEN"},
127 {E1000_TIDV
, "TIDV"},
128 {E1000_TXDCTL(0), "TXDCTL"},
129 {E1000_TADV
, "TADV"},
130 {E1000_TARC(0), "TARC"},
131 {E1000_TDFH
, "TDFH"},
132 {E1000_TDFT
, "TDFT"},
133 {E1000_TDFHS
, "TDFHS"},
134 {E1000_TDFTS
, "TDFTS"},
135 {E1000_TDFPC
, "TDFPC"},
137 /* List Terminator */
142 * e1000_regdump - register printout routine
144 static void e1000_regdump(struct e1000_hw
*hw
, struct e1000_reg_info
*reginfo
)
150 switch (reginfo
->ofs
) {
151 case E1000_RXDCTL(0):
152 for (n
= 0; n
< 2; n
++)
153 regs
[n
] = __er32(hw
, E1000_RXDCTL(n
));
155 case E1000_TXDCTL(0):
156 for (n
= 0; n
< 2; n
++)
157 regs
[n
] = __er32(hw
, E1000_TXDCTL(n
));
160 for (n
= 0; n
< 2; n
++)
161 regs
[n
] = __er32(hw
, E1000_TARC(n
));
164 printk(KERN_INFO
"%-15s %08x\n",
165 reginfo
->name
, __er32(hw
, reginfo
->ofs
));
169 snprintf(rname
, 16, "%s%s", reginfo
->name
, "[0-1]");
170 printk(KERN_INFO
"%-15s ", rname
);
171 for (n
= 0; n
< 2; n
++)
172 printk(KERN_CONT
"%08x ", regs
[n
]);
173 printk(KERN_CONT
"\n");
177 * e1000e_dump - Print registers, Tx-ring and Rx-ring
179 static void e1000e_dump(struct e1000_adapter
*adapter
)
181 struct net_device
*netdev
= adapter
->netdev
;
182 struct e1000_hw
*hw
= &adapter
->hw
;
183 struct e1000_reg_info
*reginfo
;
184 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
185 struct e1000_tx_desc
*tx_desc
;
190 struct e1000_buffer
*buffer_info
;
191 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
192 union e1000_rx_desc_packet_split
*rx_desc_ps
;
193 struct e1000_rx_desc
*rx_desc
;
203 if (!netif_msg_hw(adapter
))
206 /* Print netdevice Info */
208 dev_info(&adapter
->pdev
->dev
, "Net device Info\n");
209 printk(KERN_INFO
"Device Name state "
210 "trans_start last_rx\n");
211 printk(KERN_INFO
"%-15s %016lX %016lX %016lX\n",
212 netdev
->name
, netdev
->state
, netdev
->trans_start
,
216 /* Print Registers */
217 dev_info(&adapter
->pdev
->dev
, "Register Dump\n");
218 printk(KERN_INFO
" Register Name Value\n");
219 for (reginfo
= (struct e1000_reg_info
*)e1000_reg_info_tbl
;
220 reginfo
->name
; reginfo
++) {
221 e1000_regdump(hw
, reginfo
);
224 /* Print Tx Ring Summary */
225 if (!netdev
|| !netif_running(netdev
))
228 dev_info(&adapter
->pdev
->dev
, "Tx Ring Summary\n");
229 printk(KERN_INFO
"Queue [NTU] [NTC] [bi(ntc)->dma ]"
230 " leng ntw timestamp\n");
231 buffer_info
= &tx_ring
->buffer_info
[tx_ring
->next_to_clean
];
232 printk(KERN_INFO
" %5d %5X %5X %016llX %04X %3X %016llX\n",
233 0, tx_ring
->next_to_use
, tx_ring
->next_to_clean
,
234 (unsigned long long)buffer_info
->dma
,
236 buffer_info
->next_to_watch
,
237 (unsigned long long)buffer_info
->time_stamp
);
240 if (!netif_msg_tx_done(adapter
))
241 goto rx_ring_summary
;
243 dev_info(&adapter
->pdev
->dev
, "Tx Ring Dump\n");
245 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
247 * Legacy Transmit Descriptor
248 * +--------------------------------------------------------------+
249 * 0 | Buffer Address [63:0] (Reserved on Write Back) |
250 * +--------------------------------------------------------------+
251 * 8 | Special | CSS | Status | CMD | CSO | Length |
252 * +--------------------------------------------------------------+
253 * 63 48 47 36 35 32 31 24 23 16 15 0
255 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
256 * 63 48 47 40 39 32 31 16 15 8 7 0
257 * +----------------------------------------------------------------+
258 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
259 * +----------------------------------------------------------------+
260 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
261 * +----------------------------------------------------------------+
262 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
264 * Extended Data Descriptor (DTYP=0x1)
265 * +----------------------------------------------------------------+
266 * 0 | Buffer Address [63:0] |
267 * +----------------------------------------------------------------+
268 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
269 * +----------------------------------------------------------------+
270 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
272 printk(KERN_INFO
"Tl[desc] [address 63:0 ] [SpeCssSCmCsLen]"
273 " [bi->dma ] leng ntw timestamp bi->skb "
274 "<-- Legacy format\n");
275 printk(KERN_INFO
"Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen]"
276 " [bi->dma ] leng ntw timestamp bi->skb "
277 "<-- Ext Context format\n");
278 printk(KERN_INFO
"Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen]"
279 " [bi->dma ] leng ntw timestamp bi->skb "
280 "<-- Ext Data format\n");
281 for (i
= 0; tx_ring
->desc
&& (i
< tx_ring
->count
); i
++) {
282 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
283 buffer_info
= &tx_ring
->buffer_info
[i
];
284 u0
= (struct my_u0
*)tx_desc
;
285 printk(KERN_INFO
"T%c[0x%03X] %016llX %016llX %016llX "
286 "%04X %3X %016llX %p",
287 (!(le64_to_cpu(u0
->b
) & (1 << 29)) ? 'l' :
288 ((le64_to_cpu(u0
->b
) & (1 << 20)) ? 'd' : 'c')), i
,
289 (unsigned long long)le64_to_cpu(u0
->a
),
290 (unsigned long long)le64_to_cpu(u0
->b
),
291 (unsigned long long)buffer_info
->dma
,
292 buffer_info
->length
, buffer_info
->next_to_watch
,
293 (unsigned long long)buffer_info
->time_stamp
,
295 if (i
== tx_ring
->next_to_use
&& i
== tx_ring
->next_to_clean
)
296 printk(KERN_CONT
" NTC/U\n");
297 else if (i
== tx_ring
->next_to_use
)
298 printk(KERN_CONT
" NTU\n");
299 else if (i
== tx_ring
->next_to_clean
)
300 printk(KERN_CONT
" NTC\n");
302 printk(KERN_CONT
"\n");
304 if (netif_msg_pktdata(adapter
) && buffer_info
->dma
!= 0)
305 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_ADDRESS
,
306 16, 1, phys_to_virt(buffer_info
->dma
),
307 buffer_info
->length
, true);
310 /* Print Rx Ring Summary */
312 dev_info(&adapter
->pdev
->dev
, "Rx Ring Summary\n");
313 printk(KERN_INFO
"Queue [NTU] [NTC]\n");
314 printk(KERN_INFO
" %5d %5X %5X\n", 0,
315 rx_ring
->next_to_use
, rx_ring
->next_to_clean
);
318 if (!netif_msg_rx_status(adapter
))
321 dev_info(&adapter
->pdev
->dev
, "Rx Ring Dump\n");
322 switch (adapter
->rx_ps_pages
) {
326 /* [Extended] Packet Split Receive Descriptor Format
328 * +-----------------------------------------------------+
329 * 0 | Buffer Address 0 [63:0] |
330 * +-----------------------------------------------------+
331 * 8 | Buffer Address 1 [63:0] |
332 * +-----------------------------------------------------+
333 * 16 | Buffer Address 2 [63:0] |
334 * +-----------------------------------------------------+
335 * 24 | Buffer Address 3 [63:0] |
336 * +-----------------------------------------------------+
338 printk(KERN_INFO
"R [desc] [buffer 0 63:0 ] "
340 "[buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] "
341 "[bi->skb] <-- Ext Pkt Split format\n");
342 /* [Extended] Receive Descriptor (Write-Back) Format
344 * 63 48 47 32 31 13 12 8 7 4 3 0
345 * +------------------------------------------------------+
346 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
347 * | Checksum | Ident | | Queue | | Type |
348 * +------------------------------------------------------+
349 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
350 * +------------------------------------------------------+
351 * 63 48 47 32 31 20 19 0
353 printk(KERN_INFO
"RWB[desc] [ck ipid mrqhsh] "
355 "[ l3 l2 l1 hs] [reserved ] ---------------- "
356 "[bi->skb] <-- Ext Rx Write-Back format\n");
357 for (i
= 0; i
< rx_ring
->count
; i
++) {
358 buffer_info
= &rx_ring
->buffer_info
[i
];
359 rx_desc_ps
= E1000_RX_DESC_PS(*rx_ring
, i
);
360 u1
= (struct my_u1
*)rx_desc_ps
;
362 le32_to_cpu(rx_desc_ps
->wb
.middle
.status_error
);
363 if (staterr
& E1000_RXD_STAT_DD
) {
364 /* Descriptor Done */
365 printk(KERN_INFO
"RWB[0x%03X] %016llX "
366 "%016llX %016llX %016llX "
367 "---------------- %p", i
,
368 (unsigned long long)le64_to_cpu(u1
->a
),
369 (unsigned long long)le64_to_cpu(u1
->b
),
370 (unsigned long long)le64_to_cpu(u1
->c
),
371 (unsigned long long)le64_to_cpu(u1
->d
),
374 printk(KERN_INFO
"R [0x%03X] %016llX "
375 "%016llX %016llX %016llX %016llX %p", i
,
376 (unsigned long long)le64_to_cpu(u1
->a
),
377 (unsigned long long)le64_to_cpu(u1
->b
),
378 (unsigned long long)le64_to_cpu(u1
->c
),
379 (unsigned long long)le64_to_cpu(u1
->d
),
380 (unsigned long long)buffer_info
->dma
,
383 if (netif_msg_pktdata(adapter
))
384 print_hex_dump(KERN_INFO
, "",
385 DUMP_PREFIX_ADDRESS
, 16, 1,
386 phys_to_virt(buffer_info
->dma
),
387 adapter
->rx_ps_bsize0
, true);
390 if (i
== rx_ring
->next_to_use
)
391 printk(KERN_CONT
" NTU\n");
392 else if (i
== rx_ring
->next_to_clean
)
393 printk(KERN_CONT
" NTC\n");
395 printk(KERN_CONT
"\n");
400 /* Legacy Receive Descriptor Format
402 * +-----------------------------------------------------+
403 * | Buffer Address [63:0] |
404 * +-----------------------------------------------------+
405 * | VLAN Tag | Errors | Status 0 | Packet csum | Length |
406 * +-----------------------------------------------------+
407 * 63 48 47 40 39 32 31 16 15 0
409 printk(KERN_INFO
"Rl[desc] [address 63:0 ] "
410 "[vl er S cks ln] [bi->dma ] [bi->skb] "
411 "<-- Legacy format\n");
412 for (i
= 0; rx_ring
->desc
&& (i
< rx_ring
->count
); i
++) {
413 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
414 buffer_info
= &rx_ring
->buffer_info
[i
];
415 u0
= (struct my_u0
*)rx_desc
;
416 printk(KERN_INFO
"Rl[0x%03X] %016llX %016llX "
418 (unsigned long long)le64_to_cpu(u0
->a
),
419 (unsigned long long)le64_to_cpu(u0
->b
),
420 (unsigned long long)buffer_info
->dma
,
422 if (i
== rx_ring
->next_to_use
)
423 printk(KERN_CONT
" NTU\n");
424 else if (i
== rx_ring
->next_to_clean
)
425 printk(KERN_CONT
" NTC\n");
427 printk(KERN_CONT
"\n");
429 if (netif_msg_pktdata(adapter
))
430 print_hex_dump(KERN_INFO
, "",
433 phys_to_virt(buffer_info
->dma
),
434 adapter
->rx_buffer_len
, true);
443 * e1000_desc_unused - calculate if we have unused descriptors
445 static int e1000_desc_unused(struct e1000_ring
*ring
)
447 if (ring
->next_to_clean
> ring
->next_to_use
)
448 return ring
->next_to_clean
- ring
->next_to_use
- 1;
450 return ring
->count
+ ring
->next_to_clean
- ring
->next_to_use
- 1;
454 * e1000_receive_skb - helper function to handle Rx indications
455 * @adapter: board private structure
456 * @status: descriptor status field as written by hardware
457 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
458 * @skb: pointer to sk_buff to be indicated to stack
460 static void e1000_receive_skb(struct e1000_adapter
*adapter
,
461 struct net_device
*netdev
, struct sk_buff
*skb
,
462 u8 status
, __le16 vlan
)
464 u16 tag
= le16_to_cpu(vlan
);
465 skb
->protocol
= eth_type_trans(skb
, netdev
);
467 if (status
& E1000_RXD_STAT_VP
)
468 __vlan_hwaccel_put_tag(skb
, tag
);
470 napi_gro_receive(&adapter
->napi
, skb
);
474 * e1000_rx_checksum - Receive Checksum Offload
475 * @adapter: board private structure
476 * @status_err: receive descriptor status and error fields
477 * @csum: receive descriptor csum field
478 * @sk_buff: socket buffer with received data
480 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
481 u32 csum
, struct sk_buff
*skb
)
483 u16 status
= (u16
)status_err
;
484 u8 errors
= (u8
)(status_err
>> 24);
486 skb_checksum_none_assert(skb
);
488 /* Ignore Checksum bit is set */
489 if (status
& E1000_RXD_STAT_IXSM
)
491 /* TCP/UDP checksum error bit is set */
492 if (errors
& E1000_RXD_ERR_TCPE
) {
493 /* let the stack verify checksum errors */
494 adapter
->hw_csum_err
++;
498 /* TCP/UDP Checksum has not been calculated */
499 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
502 /* It must be a TCP or UDP packet with a valid checksum */
503 if (status
& E1000_RXD_STAT_TCPCS
) {
504 /* TCP checksum is good */
505 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
508 * IP fragment with UDP payload
509 * Hardware complements the payload checksum, so we undo it
510 * and then put the value in host order for further stack use.
512 __sum16 sum
= (__force __sum16
)htons(csum
);
513 skb
->csum
= csum_unfold(~sum
);
514 skb
->ip_summed
= CHECKSUM_COMPLETE
;
516 adapter
->hw_csum_good
++;
520 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
521 * @adapter: address of board private structure
523 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
526 struct net_device
*netdev
= adapter
->netdev
;
527 struct pci_dev
*pdev
= adapter
->pdev
;
528 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
529 struct e1000_rx_desc
*rx_desc
;
530 struct e1000_buffer
*buffer_info
;
533 unsigned int bufsz
= adapter
->rx_buffer_len
;
535 i
= rx_ring
->next_to_use
;
536 buffer_info
= &rx_ring
->buffer_info
[i
];
538 while (cleaned_count
--) {
539 skb
= buffer_info
->skb
;
545 skb
= netdev_alloc_skb_ip_align(netdev
, bufsz
);
547 /* Better luck next round */
548 adapter
->alloc_rx_buff_failed
++;
552 buffer_info
->skb
= skb
;
554 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
555 adapter
->rx_buffer_len
,
557 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
558 dev_err(&pdev
->dev
, "Rx DMA map failed\n");
559 adapter
->rx_dma_failed
++;
563 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
564 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
566 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
568 * Force memory writes to complete before letting h/w
569 * know there are new descriptors to fetch. (Only
570 * applicable for weak-ordered memory model archs,
574 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
577 if (i
== rx_ring
->count
)
579 buffer_info
= &rx_ring
->buffer_info
[i
];
582 rx_ring
->next_to_use
= i
;
586 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
587 * @adapter: address of board private structure
589 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
592 struct net_device
*netdev
= adapter
->netdev
;
593 struct pci_dev
*pdev
= adapter
->pdev
;
594 union e1000_rx_desc_packet_split
*rx_desc
;
595 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
596 struct e1000_buffer
*buffer_info
;
597 struct e1000_ps_page
*ps_page
;
601 i
= rx_ring
->next_to_use
;
602 buffer_info
= &rx_ring
->buffer_info
[i
];
604 while (cleaned_count
--) {
605 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
607 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
608 ps_page
= &buffer_info
->ps_pages
[j
];
609 if (j
>= adapter
->rx_ps_pages
) {
610 /* all unused desc entries get hw null ptr */
611 rx_desc
->read
.buffer_addr
[j
+ 1] =
615 if (!ps_page
->page
) {
616 ps_page
->page
= alloc_page(GFP_ATOMIC
);
617 if (!ps_page
->page
) {
618 adapter
->alloc_rx_buff_failed
++;
621 ps_page
->dma
= dma_map_page(&pdev
->dev
,
625 if (dma_mapping_error(&pdev
->dev
,
627 dev_err(&adapter
->pdev
->dev
,
628 "Rx DMA page map failed\n");
629 adapter
->rx_dma_failed
++;
634 * Refresh the desc even if buffer_addrs
635 * didn't change because each write-back
638 rx_desc
->read
.buffer_addr
[j
+ 1] =
639 cpu_to_le64(ps_page
->dma
);
642 skb
= netdev_alloc_skb_ip_align(netdev
,
643 adapter
->rx_ps_bsize0
);
646 adapter
->alloc_rx_buff_failed
++;
650 buffer_info
->skb
= skb
;
651 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
652 adapter
->rx_ps_bsize0
,
654 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
655 dev_err(&pdev
->dev
, "Rx DMA map failed\n");
656 adapter
->rx_dma_failed
++;
658 dev_kfree_skb_any(skb
);
659 buffer_info
->skb
= NULL
;
663 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
665 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
667 * Force memory writes to complete before letting h/w
668 * know there are new descriptors to fetch. (Only
669 * applicable for weak-ordered memory model archs,
673 writel(i
<< 1, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
677 if (i
== rx_ring
->count
)
679 buffer_info
= &rx_ring
->buffer_info
[i
];
683 rx_ring
->next_to_use
= i
;
687 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
688 * @adapter: address of board private structure
689 * @cleaned_count: number of buffers to allocate this pass
692 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter
*adapter
,
695 struct net_device
*netdev
= adapter
->netdev
;
696 struct pci_dev
*pdev
= adapter
->pdev
;
697 struct e1000_rx_desc
*rx_desc
;
698 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
699 struct e1000_buffer
*buffer_info
;
702 unsigned int bufsz
= 256 - 16 /* for skb_reserve */;
704 i
= rx_ring
->next_to_use
;
705 buffer_info
= &rx_ring
->buffer_info
[i
];
707 while (cleaned_count
--) {
708 skb
= buffer_info
->skb
;
714 skb
= netdev_alloc_skb_ip_align(netdev
, bufsz
);
715 if (unlikely(!skb
)) {
716 /* Better luck next round */
717 adapter
->alloc_rx_buff_failed
++;
721 buffer_info
->skb
= skb
;
723 /* allocate a new page if necessary */
724 if (!buffer_info
->page
) {
725 buffer_info
->page
= alloc_page(GFP_ATOMIC
);
726 if (unlikely(!buffer_info
->page
)) {
727 adapter
->alloc_rx_buff_failed
++;
732 if (!buffer_info
->dma
)
733 buffer_info
->dma
= dma_map_page(&pdev
->dev
,
734 buffer_info
->page
, 0,
738 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
739 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
741 if (unlikely(++i
== rx_ring
->count
))
743 buffer_info
= &rx_ring
->buffer_info
[i
];
746 if (likely(rx_ring
->next_to_use
!= i
)) {
747 rx_ring
->next_to_use
= i
;
748 if (unlikely(i
-- == 0))
749 i
= (rx_ring
->count
- 1);
751 /* Force memory writes to complete before letting h/w
752 * know there are new descriptors to fetch. (Only
753 * applicable for weak-ordered memory model archs,
756 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
761 * e1000_clean_rx_irq - Send received data up the network stack; legacy
762 * @adapter: board private structure
764 * the return value indicates whether actual cleaning was done, there
765 * is no guarantee that everything was cleaned
767 static bool e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
768 int *work_done
, int work_to_do
)
770 struct net_device
*netdev
= adapter
->netdev
;
771 struct pci_dev
*pdev
= adapter
->pdev
;
772 struct e1000_hw
*hw
= &adapter
->hw
;
773 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
774 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
775 struct e1000_buffer
*buffer_info
, *next_buffer
;
778 int cleaned_count
= 0;
780 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
782 i
= rx_ring
->next_to_clean
;
783 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
784 buffer_info
= &rx_ring
->buffer_info
[i
];
786 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
790 if (*work_done
>= work_to_do
)
793 rmb(); /* read descriptor and rx_buffer_info after status DD */
795 status
= rx_desc
->status
;
796 skb
= buffer_info
->skb
;
797 buffer_info
->skb
= NULL
;
799 prefetch(skb
->data
- NET_IP_ALIGN
);
802 if (i
== rx_ring
->count
)
804 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
807 next_buffer
= &rx_ring
->buffer_info
[i
];
811 dma_unmap_single(&pdev
->dev
,
813 adapter
->rx_buffer_len
,
815 buffer_info
->dma
= 0;
817 length
= le16_to_cpu(rx_desc
->length
);
820 * !EOP means multiple descriptors were used to store a single
821 * packet, if that's the case we need to toss it. In fact, we
822 * need to toss every packet with the EOP bit clear and the
823 * next frame that _does_ have the EOP bit set, as it is by
824 * definition only a frame fragment
826 if (unlikely(!(status
& E1000_RXD_STAT_EOP
)))
827 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
829 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
830 /* All receives must fit into a single buffer */
831 e_dbg("Receive packet consumed multiple buffers\n");
833 buffer_info
->skb
= skb
;
834 if (status
& E1000_RXD_STAT_EOP
)
835 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
839 if (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
) {
841 buffer_info
->skb
= skb
;
845 /* adjust length to remove Ethernet CRC */
846 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
849 total_rx_bytes
+= length
;
853 * code added for copybreak, this should improve
854 * performance for small packets with large amounts
855 * of reassembly being done in the stack
857 if (length
< copybreak
) {
858 struct sk_buff
*new_skb
=
859 netdev_alloc_skb_ip_align(netdev
, length
);
861 skb_copy_to_linear_data_offset(new_skb
,
867 /* save the skb in buffer_info as good */
868 buffer_info
->skb
= skb
;
871 /* else just continue with the old one */
873 /* end copybreak code */
874 skb_put(skb
, length
);
876 /* Receive Checksum Offload */
877 e1000_rx_checksum(adapter
,
879 ((u32
)(rx_desc
->errors
) << 24),
880 le16_to_cpu(rx_desc
->csum
), skb
);
882 e1000_receive_skb(adapter
, netdev
, skb
,status
,rx_desc
->special
);
887 /* return some buffers to hardware, one at a time is too slow */
888 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
889 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
893 /* use prefetched values */
895 buffer_info
= next_buffer
;
897 rx_ring
->next_to_clean
= i
;
899 cleaned_count
= e1000_desc_unused(rx_ring
);
901 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
903 adapter
->total_rx_bytes
+= total_rx_bytes
;
904 adapter
->total_rx_packets
+= total_rx_packets
;
908 static void e1000_put_txbuf(struct e1000_adapter
*adapter
,
909 struct e1000_buffer
*buffer_info
)
911 if (buffer_info
->dma
) {
912 if (buffer_info
->mapped_as_page
)
913 dma_unmap_page(&adapter
->pdev
->dev
, buffer_info
->dma
,
914 buffer_info
->length
, DMA_TO_DEVICE
);
916 dma_unmap_single(&adapter
->pdev
->dev
, buffer_info
->dma
,
917 buffer_info
->length
, DMA_TO_DEVICE
);
918 buffer_info
->dma
= 0;
920 if (buffer_info
->skb
) {
921 dev_kfree_skb_any(buffer_info
->skb
);
922 buffer_info
->skb
= NULL
;
924 buffer_info
->time_stamp
= 0;
927 static void e1000_print_hw_hang(struct work_struct
*work
)
929 struct e1000_adapter
*adapter
= container_of(work
,
930 struct e1000_adapter
,
932 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
933 unsigned int i
= tx_ring
->next_to_clean
;
934 unsigned int eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
935 struct e1000_tx_desc
*eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
936 struct e1000_hw
*hw
= &adapter
->hw
;
937 u16 phy_status
, phy_1000t_status
, phy_ext_status
;
940 if (test_bit(__E1000_DOWN
, &adapter
->state
))
943 e1e_rphy(hw
, PHY_STATUS
, &phy_status
);
944 e1e_rphy(hw
, PHY_1000T_STATUS
, &phy_1000t_status
);
945 e1e_rphy(hw
, PHY_EXT_STATUS
, &phy_ext_status
);
947 pci_read_config_word(adapter
->pdev
, PCI_STATUS
, &pci_status
);
949 /* detected Hardware unit hang */
950 e_err("Detected Hardware Unit Hang:\n"
953 " next_to_use <%x>\n"
954 " next_to_clean <%x>\n"
955 "buffer_info[next_to_clean]:\n"
956 " time_stamp <%lx>\n"
957 " next_to_watch <%x>\n"
959 " next_to_watch.status <%x>\n"
962 "PHY 1000BASE-T Status <%x>\n"
963 "PHY Extended Status <%x>\n"
965 readl(adapter
->hw
.hw_addr
+ tx_ring
->head
),
966 readl(adapter
->hw
.hw_addr
+ tx_ring
->tail
),
967 tx_ring
->next_to_use
,
968 tx_ring
->next_to_clean
,
969 tx_ring
->buffer_info
[eop
].time_stamp
,
972 eop_desc
->upper
.fields
.status
,
981 * e1000_clean_tx_irq - Reclaim resources after transmit completes
982 * @adapter: board private structure
984 * the return value indicates whether actual cleaning was done, there
985 * is no guarantee that everything was cleaned
987 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
)
989 struct net_device
*netdev
= adapter
->netdev
;
990 struct e1000_hw
*hw
= &adapter
->hw
;
991 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
992 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
993 struct e1000_buffer
*buffer_info
;
995 unsigned int count
= 0;
996 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
998 i
= tx_ring
->next_to_clean
;
999 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1000 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1002 while ((eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
1003 (count
< tx_ring
->count
)) {
1004 bool cleaned
= false;
1005 rmb(); /* read buffer_info after eop_desc */
1006 for (; !cleaned
; count
++) {
1007 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
1008 buffer_info
= &tx_ring
->buffer_info
[i
];
1009 cleaned
= (i
== eop
);
1012 total_tx_packets
+= buffer_info
->segs
;
1013 total_tx_bytes
+= buffer_info
->bytecount
;
1016 e1000_put_txbuf(adapter
, buffer_info
);
1017 tx_desc
->upper
.data
= 0;
1020 if (i
== tx_ring
->count
)
1024 if (i
== tx_ring
->next_to_use
)
1026 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1027 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1030 tx_ring
->next_to_clean
= i
;
1032 #define TX_WAKE_THRESHOLD 32
1033 if (count
&& netif_carrier_ok(netdev
) &&
1034 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
1035 /* Make sure that anybody stopping the queue after this
1036 * sees the new next_to_clean.
1040 if (netif_queue_stopped(netdev
) &&
1041 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
1042 netif_wake_queue(netdev
);
1043 ++adapter
->restart_queue
;
1047 if (adapter
->detect_tx_hung
) {
1049 * Detect a transmit hang in hardware, this serializes the
1050 * check with the clearing of time_stamp and movement of i
1052 adapter
->detect_tx_hung
= 0;
1053 if (tx_ring
->buffer_info
[i
].time_stamp
&&
1054 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
1055 + (adapter
->tx_timeout_factor
* HZ
)) &&
1056 !(er32(STATUS
) & E1000_STATUS_TXOFF
)) {
1057 schedule_work(&adapter
->print_hang_task
);
1058 netif_stop_queue(netdev
);
1061 adapter
->total_tx_bytes
+= total_tx_bytes
;
1062 adapter
->total_tx_packets
+= total_tx_packets
;
1063 return count
< tx_ring
->count
;
1067 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
1068 * @adapter: board private structure
1070 * the return value indicates whether actual cleaning was done, there
1071 * is no guarantee that everything was cleaned
1073 static bool e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
1074 int *work_done
, int work_to_do
)
1076 struct e1000_hw
*hw
= &adapter
->hw
;
1077 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
1078 struct net_device
*netdev
= adapter
->netdev
;
1079 struct pci_dev
*pdev
= adapter
->pdev
;
1080 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1081 struct e1000_buffer
*buffer_info
, *next_buffer
;
1082 struct e1000_ps_page
*ps_page
;
1083 struct sk_buff
*skb
;
1085 u32 length
, staterr
;
1086 int cleaned_count
= 0;
1088 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
1090 i
= rx_ring
->next_to_clean
;
1091 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
1092 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1093 buffer_info
= &rx_ring
->buffer_info
[i
];
1095 while (staterr
& E1000_RXD_STAT_DD
) {
1096 if (*work_done
>= work_to_do
)
1099 skb
= buffer_info
->skb
;
1100 rmb(); /* read descriptor and rx_buffer_info after status DD */
1102 /* in the packet split case this is header only */
1103 prefetch(skb
->data
- NET_IP_ALIGN
);
1106 if (i
== rx_ring
->count
)
1108 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
1111 next_buffer
= &rx_ring
->buffer_info
[i
];
1115 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1116 adapter
->rx_ps_bsize0
, DMA_FROM_DEVICE
);
1117 buffer_info
->dma
= 0;
1119 /* see !EOP comment in other Rx routine */
1120 if (!(staterr
& E1000_RXD_STAT_EOP
))
1121 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
1123 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
1124 e_dbg("Packet Split buffers didn't pick up the full "
1126 dev_kfree_skb_irq(skb
);
1127 if (staterr
& E1000_RXD_STAT_EOP
)
1128 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1132 if (staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) {
1133 dev_kfree_skb_irq(skb
);
1137 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
1140 e_dbg("Last part of the packet spanning multiple "
1142 dev_kfree_skb_irq(skb
);
1147 skb_put(skb
, length
);
1151 * this looks ugly, but it seems compiler issues make it
1152 * more efficient than reusing j
1154 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
1157 * page alloc/put takes too long and effects small packet
1158 * throughput, so unsplit small packets and save the alloc/put
1159 * only valid in softirq (napi) context to call kmap_*
1161 if (l1
&& (l1
<= copybreak
) &&
1162 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
1165 ps_page
= &buffer_info
->ps_pages
[0];
1168 * there is no documentation about how to call
1169 * kmap_atomic, so we can't hold the mapping
1172 dma_sync_single_for_cpu(&pdev
->dev
, ps_page
->dma
,
1173 PAGE_SIZE
, DMA_FROM_DEVICE
);
1174 vaddr
= kmap_atomic(ps_page
->page
, KM_SKB_DATA_SOFTIRQ
);
1175 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
1176 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
1177 dma_sync_single_for_device(&pdev
->dev
, ps_page
->dma
,
1178 PAGE_SIZE
, DMA_FROM_DEVICE
);
1180 /* remove the CRC */
1181 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
1189 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1190 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
1194 ps_page
= &buffer_info
->ps_pages
[j
];
1195 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1198 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
1199 ps_page
->page
= NULL
;
1201 skb
->data_len
+= length
;
1202 skb
->truesize
+= length
;
1205 /* strip the ethernet crc, problem is we're using pages now so
1206 * this whole operation can get a little cpu intensive
1208 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
1209 pskb_trim(skb
, skb
->len
- 4);
1212 total_rx_bytes
+= skb
->len
;
1215 e1000_rx_checksum(adapter
, staterr
, le16_to_cpu(
1216 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
1218 if (rx_desc
->wb
.upper
.header_status
&
1219 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
1220 adapter
->rx_hdr_split
++;
1222 e1000_receive_skb(adapter
, netdev
, skb
,
1223 staterr
, rx_desc
->wb
.middle
.vlan
);
1226 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
1227 buffer_info
->skb
= NULL
;
1229 /* return some buffers to hardware, one at a time is too slow */
1230 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
1231 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1235 /* use prefetched values */
1237 buffer_info
= next_buffer
;
1239 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1241 rx_ring
->next_to_clean
= i
;
1243 cleaned_count
= e1000_desc_unused(rx_ring
);
1245 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1247 adapter
->total_rx_bytes
+= total_rx_bytes
;
1248 adapter
->total_rx_packets
+= total_rx_packets
;
1253 * e1000_consume_page - helper function
1255 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
1260 skb
->data_len
+= length
;
1261 skb
->truesize
+= length
;
1265 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1266 * @adapter: board private structure
1268 * the return value indicates whether actual cleaning was done, there
1269 * is no guarantee that everything was cleaned
1272 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter
*adapter
,
1273 int *work_done
, int work_to_do
)
1275 struct net_device
*netdev
= adapter
->netdev
;
1276 struct pci_dev
*pdev
= adapter
->pdev
;
1277 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1278 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
1279 struct e1000_buffer
*buffer_info
, *next_buffer
;
1282 int cleaned_count
= 0;
1283 bool cleaned
= false;
1284 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
1286 i
= rx_ring
->next_to_clean
;
1287 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
1288 buffer_info
= &rx_ring
->buffer_info
[i
];
1290 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
1291 struct sk_buff
*skb
;
1294 if (*work_done
>= work_to_do
)
1297 rmb(); /* read descriptor and rx_buffer_info after status DD */
1299 status
= rx_desc
->status
;
1300 skb
= buffer_info
->skb
;
1301 buffer_info
->skb
= NULL
;
1304 if (i
== rx_ring
->count
)
1306 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
1309 next_buffer
= &rx_ring
->buffer_info
[i
];
1313 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
, PAGE_SIZE
,
1315 buffer_info
->dma
= 0;
1317 length
= le16_to_cpu(rx_desc
->length
);
1319 /* errors is only valid for DD + EOP descriptors */
1320 if (unlikely((status
& E1000_RXD_STAT_EOP
) &&
1321 (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
))) {
1322 /* recycle both page and skb */
1323 buffer_info
->skb
= skb
;
1324 /* an error means any chain goes out the window
1326 if (rx_ring
->rx_skb_top
)
1327 dev_kfree_skb_irq(rx_ring
->rx_skb_top
);
1328 rx_ring
->rx_skb_top
= NULL
;
1332 #define rxtop (rx_ring->rx_skb_top)
1333 if (!(status
& E1000_RXD_STAT_EOP
)) {
1334 /* this descriptor is only the beginning (or middle) */
1336 /* this is the beginning of a chain */
1338 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
1341 /* this is the middle of a chain */
1342 skb_fill_page_desc(rxtop
,
1343 skb_shinfo(rxtop
)->nr_frags
,
1344 buffer_info
->page
, 0, length
);
1345 /* re-use the skb, only consumed the page */
1346 buffer_info
->skb
= skb
;
1348 e1000_consume_page(buffer_info
, rxtop
, length
);
1352 /* end of the chain */
1353 skb_fill_page_desc(rxtop
,
1354 skb_shinfo(rxtop
)->nr_frags
,
1355 buffer_info
->page
, 0, length
);
1356 /* re-use the current skb, we only consumed the
1358 buffer_info
->skb
= skb
;
1361 e1000_consume_page(buffer_info
, skb
, length
);
1363 /* no chain, got EOP, this buf is the packet
1364 * copybreak to save the put_page/alloc_page */
1365 if (length
<= copybreak
&&
1366 skb_tailroom(skb
) >= length
) {
1368 vaddr
= kmap_atomic(buffer_info
->page
,
1369 KM_SKB_DATA_SOFTIRQ
);
1370 memcpy(skb_tail_pointer(skb
), vaddr
,
1372 kunmap_atomic(vaddr
,
1373 KM_SKB_DATA_SOFTIRQ
);
1374 /* re-use the page, so don't erase
1375 * buffer_info->page */
1376 skb_put(skb
, length
);
1378 skb_fill_page_desc(skb
, 0,
1379 buffer_info
->page
, 0,
1381 e1000_consume_page(buffer_info
, skb
,
1387 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1388 e1000_rx_checksum(adapter
,
1390 ((u32
)(rx_desc
->errors
) << 24),
1391 le16_to_cpu(rx_desc
->csum
), skb
);
1393 /* probably a little skewed due to removing CRC */
1394 total_rx_bytes
+= skb
->len
;
1397 /* eth type trans needs skb->data to point to something */
1398 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1399 e_err("pskb_may_pull failed.\n");
1400 dev_kfree_skb_irq(skb
);
1404 e1000_receive_skb(adapter
, netdev
, skb
, status
,
1408 rx_desc
->status
= 0;
1410 /* return some buffers to hardware, one at a time is too slow */
1411 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1412 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1416 /* use prefetched values */
1418 buffer_info
= next_buffer
;
1420 rx_ring
->next_to_clean
= i
;
1422 cleaned_count
= e1000_desc_unused(rx_ring
);
1424 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1426 adapter
->total_rx_bytes
+= total_rx_bytes
;
1427 adapter
->total_rx_packets
+= total_rx_packets
;
1432 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1433 * @adapter: board private structure
1435 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
)
1437 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1438 struct e1000_buffer
*buffer_info
;
1439 struct e1000_ps_page
*ps_page
;
1440 struct pci_dev
*pdev
= adapter
->pdev
;
1443 /* Free all the Rx ring sk_buffs */
1444 for (i
= 0; i
< rx_ring
->count
; i
++) {
1445 buffer_info
= &rx_ring
->buffer_info
[i
];
1446 if (buffer_info
->dma
) {
1447 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1448 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1449 adapter
->rx_buffer_len
,
1451 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1452 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
,
1455 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1456 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1457 adapter
->rx_ps_bsize0
,
1459 buffer_info
->dma
= 0;
1462 if (buffer_info
->page
) {
1463 put_page(buffer_info
->page
);
1464 buffer_info
->page
= NULL
;
1467 if (buffer_info
->skb
) {
1468 dev_kfree_skb(buffer_info
->skb
);
1469 buffer_info
->skb
= NULL
;
1472 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1473 ps_page
= &buffer_info
->ps_pages
[j
];
1476 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1479 put_page(ps_page
->page
);
1480 ps_page
->page
= NULL
;
1484 /* there also may be some cached data from a chained receive */
1485 if (rx_ring
->rx_skb_top
) {
1486 dev_kfree_skb(rx_ring
->rx_skb_top
);
1487 rx_ring
->rx_skb_top
= NULL
;
1490 /* Zero out the descriptor ring */
1491 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1493 rx_ring
->next_to_clean
= 0;
1494 rx_ring
->next_to_use
= 0;
1495 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1497 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
1498 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
1501 static void e1000e_downshift_workaround(struct work_struct
*work
)
1503 struct e1000_adapter
*adapter
= container_of(work
,
1504 struct e1000_adapter
, downshift_task
);
1506 if (test_bit(__E1000_DOWN
, &adapter
->state
))
1509 e1000e_gig_downshift_workaround_ich8lan(&adapter
->hw
);
1513 * e1000_intr_msi - Interrupt Handler
1514 * @irq: interrupt number
1515 * @data: pointer to a network interface device structure
1517 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
1519 struct net_device
*netdev
= data
;
1520 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1521 struct e1000_hw
*hw
= &adapter
->hw
;
1522 u32 icr
= er32(ICR
);
1525 * read ICR disables interrupts using IAM
1528 if (icr
& E1000_ICR_LSC
) {
1529 hw
->mac
.get_link_status
= 1;
1531 * ICH8 workaround-- Call gig speed drop workaround on cable
1532 * disconnect (LSC) before accessing any PHY registers
1534 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1535 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1536 schedule_work(&adapter
->downshift_task
);
1539 * 80003ES2LAN workaround-- For packet buffer work-around on
1540 * link down event; disable receives here in the ISR and reset
1541 * adapter in watchdog
1543 if (netif_carrier_ok(netdev
) &&
1544 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1545 /* disable receives */
1546 u32 rctl
= er32(RCTL
);
1547 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1548 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1550 /* guard against interrupt when we're going down */
1551 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1552 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1555 if (napi_schedule_prep(&adapter
->napi
)) {
1556 adapter
->total_tx_bytes
= 0;
1557 adapter
->total_tx_packets
= 0;
1558 adapter
->total_rx_bytes
= 0;
1559 adapter
->total_rx_packets
= 0;
1560 __napi_schedule(&adapter
->napi
);
1567 * e1000_intr - Interrupt Handler
1568 * @irq: interrupt number
1569 * @data: pointer to a network interface device structure
1571 static irqreturn_t
e1000_intr(int irq
, void *data
)
1573 struct net_device
*netdev
= data
;
1574 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1575 struct e1000_hw
*hw
= &adapter
->hw
;
1576 u32 rctl
, icr
= er32(ICR
);
1578 if (!icr
|| test_bit(__E1000_DOWN
, &adapter
->state
))
1579 return IRQ_NONE
; /* Not our interrupt */
1582 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1583 * not set, then the adapter didn't send an interrupt
1585 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1589 * Interrupt Auto-Mask...upon reading ICR,
1590 * interrupts are masked. No need for the
1594 if (icr
& E1000_ICR_LSC
) {
1595 hw
->mac
.get_link_status
= 1;
1597 * ICH8 workaround-- Call gig speed drop workaround on cable
1598 * disconnect (LSC) before accessing any PHY registers
1600 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1601 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1602 schedule_work(&adapter
->downshift_task
);
1605 * 80003ES2LAN workaround--
1606 * For packet buffer work-around on link down event;
1607 * disable receives here in the ISR and
1608 * reset adapter in watchdog
1610 if (netif_carrier_ok(netdev
) &&
1611 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1612 /* disable receives */
1614 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1615 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1617 /* guard against interrupt when we're going down */
1618 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1619 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1622 if (napi_schedule_prep(&adapter
->napi
)) {
1623 adapter
->total_tx_bytes
= 0;
1624 adapter
->total_tx_packets
= 0;
1625 adapter
->total_rx_bytes
= 0;
1626 adapter
->total_rx_packets
= 0;
1627 __napi_schedule(&adapter
->napi
);
1633 static irqreturn_t
e1000_msix_other(int irq
, void *data
)
1635 struct net_device
*netdev
= data
;
1636 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1637 struct e1000_hw
*hw
= &adapter
->hw
;
1638 u32 icr
= er32(ICR
);
1640 if (!(icr
& E1000_ICR_INT_ASSERTED
)) {
1641 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1642 ew32(IMS
, E1000_IMS_OTHER
);
1646 if (icr
& adapter
->eiac_mask
)
1647 ew32(ICS
, (icr
& adapter
->eiac_mask
));
1649 if (icr
& E1000_ICR_OTHER
) {
1650 if (!(icr
& E1000_ICR_LSC
))
1651 goto no_link_interrupt
;
1652 hw
->mac
.get_link_status
= 1;
1653 /* guard against interrupt when we're going down */
1654 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1655 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1659 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1660 ew32(IMS
, E1000_IMS_LSC
| E1000_IMS_OTHER
);
1666 static irqreturn_t
e1000_intr_msix_tx(int irq
, void *data
)
1668 struct net_device
*netdev
= data
;
1669 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1670 struct e1000_hw
*hw
= &adapter
->hw
;
1671 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1674 adapter
->total_tx_bytes
= 0;
1675 adapter
->total_tx_packets
= 0;
1677 if (!e1000_clean_tx_irq(adapter
))
1678 /* Ring was not completely cleaned, so fire another interrupt */
1679 ew32(ICS
, tx_ring
->ims_val
);
1684 static irqreturn_t
e1000_intr_msix_rx(int irq
, void *data
)
1686 struct net_device
*netdev
= data
;
1687 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1689 /* Write the ITR value calculated at the end of the
1690 * previous interrupt.
1692 if (adapter
->rx_ring
->set_itr
) {
1693 writel(1000000000 / (adapter
->rx_ring
->itr_val
* 256),
1694 adapter
->hw
.hw_addr
+ adapter
->rx_ring
->itr_register
);
1695 adapter
->rx_ring
->set_itr
= 0;
1698 if (napi_schedule_prep(&adapter
->napi
)) {
1699 adapter
->total_rx_bytes
= 0;
1700 adapter
->total_rx_packets
= 0;
1701 __napi_schedule(&adapter
->napi
);
1707 * e1000_configure_msix - Configure MSI-X hardware
1709 * e1000_configure_msix sets up the hardware to properly
1710 * generate MSI-X interrupts.
1712 static void e1000_configure_msix(struct e1000_adapter
*adapter
)
1714 struct e1000_hw
*hw
= &adapter
->hw
;
1715 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1716 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1718 u32 ctrl_ext
, ivar
= 0;
1720 adapter
->eiac_mask
= 0;
1722 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1723 if (hw
->mac
.type
== e1000_82574
) {
1724 u32 rfctl
= er32(RFCTL
);
1725 rfctl
|= E1000_RFCTL_ACK_DIS
;
1729 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1730 /* Configure Rx vector */
1731 rx_ring
->ims_val
= E1000_IMS_RXQ0
;
1732 adapter
->eiac_mask
|= rx_ring
->ims_val
;
1733 if (rx_ring
->itr_val
)
1734 writel(1000000000 / (rx_ring
->itr_val
* 256),
1735 hw
->hw_addr
+ rx_ring
->itr_register
);
1737 writel(1, hw
->hw_addr
+ rx_ring
->itr_register
);
1738 ivar
= E1000_IVAR_INT_ALLOC_VALID
| vector
;
1740 /* Configure Tx vector */
1741 tx_ring
->ims_val
= E1000_IMS_TXQ0
;
1743 if (tx_ring
->itr_val
)
1744 writel(1000000000 / (tx_ring
->itr_val
* 256),
1745 hw
->hw_addr
+ tx_ring
->itr_register
);
1747 writel(1, hw
->hw_addr
+ tx_ring
->itr_register
);
1748 adapter
->eiac_mask
|= tx_ring
->ims_val
;
1749 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 8);
1751 /* set vector for Other Causes, e.g. link changes */
1753 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 16);
1754 if (rx_ring
->itr_val
)
1755 writel(1000000000 / (rx_ring
->itr_val
* 256),
1756 hw
->hw_addr
+ E1000_EITR_82574(vector
));
1758 writel(1, hw
->hw_addr
+ E1000_EITR_82574(vector
));
1760 /* Cause Tx interrupts on every write back */
1765 /* enable MSI-X PBA support */
1766 ctrl_ext
= er32(CTRL_EXT
);
1767 ctrl_ext
|= E1000_CTRL_EXT_PBA_CLR
;
1769 /* Auto-Mask Other interrupts upon ICR read */
1770 #define E1000_EIAC_MASK_82574 0x01F00000
1771 ew32(IAM
, ~E1000_EIAC_MASK_82574
| E1000_IMS_OTHER
);
1772 ctrl_ext
|= E1000_CTRL_EXT_EIAME
;
1773 ew32(CTRL_EXT
, ctrl_ext
);
1777 void e1000e_reset_interrupt_capability(struct e1000_adapter
*adapter
)
1779 if (adapter
->msix_entries
) {
1780 pci_disable_msix(adapter
->pdev
);
1781 kfree(adapter
->msix_entries
);
1782 adapter
->msix_entries
= NULL
;
1783 } else if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1784 pci_disable_msi(adapter
->pdev
);
1785 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
1790 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1792 * Attempt to configure interrupts using the best available
1793 * capabilities of the hardware and kernel.
1795 void e1000e_set_interrupt_capability(struct e1000_adapter
*adapter
)
1800 switch (adapter
->int_mode
) {
1801 case E1000E_INT_MODE_MSIX
:
1802 if (adapter
->flags
& FLAG_HAS_MSIX
) {
1803 adapter
->num_vectors
= 3; /* RxQ0, TxQ0 and other */
1804 adapter
->msix_entries
= kcalloc(adapter
->num_vectors
,
1805 sizeof(struct msix_entry
),
1807 if (adapter
->msix_entries
) {
1808 for (i
= 0; i
< adapter
->num_vectors
; i
++)
1809 adapter
->msix_entries
[i
].entry
= i
;
1811 err
= pci_enable_msix(adapter
->pdev
,
1812 adapter
->msix_entries
,
1813 adapter
->num_vectors
);
1817 /* MSI-X failed, so fall through and try MSI */
1818 e_err("Failed to initialize MSI-X interrupts. "
1819 "Falling back to MSI interrupts.\n");
1820 e1000e_reset_interrupt_capability(adapter
);
1822 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1824 case E1000E_INT_MODE_MSI
:
1825 if (!pci_enable_msi(adapter
->pdev
)) {
1826 adapter
->flags
|= FLAG_MSI_ENABLED
;
1828 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1829 e_err("Failed to initialize MSI interrupts. Falling "
1830 "back to legacy interrupts.\n");
1833 case E1000E_INT_MODE_LEGACY
:
1834 /* Don't do anything; this is the system default */
1838 /* store the number of vectors being used */
1839 adapter
->num_vectors
= 1;
1843 * e1000_request_msix - Initialize MSI-X interrupts
1845 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1848 static int e1000_request_msix(struct e1000_adapter
*adapter
)
1850 struct net_device
*netdev
= adapter
->netdev
;
1851 int err
= 0, vector
= 0;
1853 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1854 snprintf(adapter
->rx_ring
->name
,
1855 sizeof(adapter
->rx_ring
->name
) - 1,
1856 "%s-rx-0", netdev
->name
);
1858 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1859 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1860 e1000_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
1864 adapter
->rx_ring
->itr_register
= E1000_EITR_82574(vector
);
1865 adapter
->rx_ring
->itr_val
= adapter
->itr
;
1868 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1869 snprintf(adapter
->tx_ring
->name
,
1870 sizeof(adapter
->tx_ring
->name
) - 1,
1871 "%s-tx-0", netdev
->name
);
1873 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1874 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1875 e1000_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
1879 adapter
->tx_ring
->itr_register
= E1000_EITR_82574(vector
);
1880 adapter
->tx_ring
->itr_val
= adapter
->itr
;
1883 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1884 e1000_msix_other
, 0, netdev
->name
, netdev
);
1888 e1000_configure_msix(adapter
);
1895 * e1000_request_irq - initialize interrupts
1897 * Attempts to configure interrupts using the best available
1898 * capabilities of the hardware and kernel.
1900 static int e1000_request_irq(struct e1000_adapter
*adapter
)
1902 struct net_device
*netdev
= adapter
->netdev
;
1905 if (adapter
->msix_entries
) {
1906 err
= e1000_request_msix(adapter
);
1909 /* fall back to MSI */
1910 e1000e_reset_interrupt_capability(adapter
);
1911 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1912 e1000e_set_interrupt_capability(adapter
);
1914 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1915 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi
, 0,
1916 netdev
->name
, netdev
);
1920 /* fall back to legacy interrupt */
1921 e1000e_reset_interrupt_capability(adapter
);
1922 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1925 err
= request_irq(adapter
->pdev
->irq
, e1000_intr
, IRQF_SHARED
,
1926 netdev
->name
, netdev
);
1928 e_err("Unable to allocate interrupt, Error: %d\n", err
);
1933 static void e1000_free_irq(struct e1000_adapter
*adapter
)
1935 struct net_device
*netdev
= adapter
->netdev
;
1937 if (adapter
->msix_entries
) {
1940 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1943 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1946 /* Other Causes interrupt vector */
1947 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1951 free_irq(adapter
->pdev
->irq
, netdev
);
1955 * e1000_irq_disable - Mask off interrupt generation on the NIC
1957 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
1959 struct e1000_hw
*hw
= &adapter
->hw
;
1962 if (adapter
->msix_entries
)
1963 ew32(EIAC_82574
, 0);
1966 if (adapter
->msix_entries
) {
1968 for (i
= 0; i
< adapter
->num_vectors
; i
++)
1969 synchronize_irq(adapter
->msix_entries
[i
].vector
);
1971 synchronize_irq(adapter
->pdev
->irq
);
1976 * e1000_irq_enable - Enable default interrupt generation settings
1978 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
1980 struct e1000_hw
*hw
= &adapter
->hw
;
1982 if (adapter
->msix_entries
) {
1983 ew32(EIAC_82574
, adapter
->eiac_mask
& E1000_EIAC_MASK_82574
);
1984 ew32(IMS
, adapter
->eiac_mask
| E1000_IMS_OTHER
| E1000_IMS_LSC
);
1986 ew32(IMS
, IMS_ENABLE_MASK
);
1992 * e1000e_get_hw_control - get control of the h/w from f/w
1993 * @adapter: address of board private structure
1995 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1996 * For ASF and Pass Through versions of f/w this means that
1997 * the driver is loaded. For AMT version (only with 82573)
1998 * of the f/w this means that the network i/f is open.
2000 void e1000e_get_hw_control(struct e1000_adapter
*adapter
)
2002 struct e1000_hw
*hw
= &adapter
->hw
;
2006 /* Let firmware know the driver has taken over */
2007 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2009 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
2010 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2011 ctrl_ext
= er32(CTRL_EXT
);
2012 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
2017 * e1000e_release_hw_control - release control of the h/w to f/w
2018 * @adapter: address of board private structure
2020 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2021 * For ASF and Pass Through versions of f/w this means that the
2022 * driver is no longer loaded. For AMT version (only with 82573) i
2023 * of the f/w this means that the network i/f is closed.
2026 void e1000e_release_hw_control(struct e1000_adapter
*adapter
)
2028 struct e1000_hw
*hw
= &adapter
->hw
;
2032 /* Let firmware taken over control of h/w */
2033 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2035 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
2036 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2037 ctrl_ext
= er32(CTRL_EXT
);
2038 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
2043 * @e1000_alloc_ring - allocate memory for a ring structure
2045 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
2046 struct e1000_ring
*ring
)
2048 struct pci_dev
*pdev
= adapter
->pdev
;
2050 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
2059 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
2060 * @adapter: board private structure
2062 * Return 0 on success, negative on failure
2064 int e1000e_setup_tx_resources(struct e1000_adapter
*adapter
)
2066 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2067 int err
= -ENOMEM
, size
;
2069 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2070 tx_ring
->buffer_info
= vzalloc(size
);
2071 if (!tx_ring
->buffer_info
)
2074 /* round up to nearest 4K */
2075 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2076 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
2078 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
2082 tx_ring
->next_to_use
= 0;
2083 tx_ring
->next_to_clean
= 0;
2087 vfree(tx_ring
->buffer_info
);
2088 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2093 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
2094 * @adapter: board private structure
2096 * Returns 0 on success, negative on failure
2098 int e1000e_setup_rx_resources(struct e1000_adapter
*adapter
)
2100 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2101 struct e1000_buffer
*buffer_info
;
2102 int i
, size
, desc_len
, err
= -ENOMEM
;
2104 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2105 rx_ring
->buffer_info
= vzalloc(size
);
2106 if (!rx_ring
->buffer_info
)
2109 for (i
= 0; i
< rx_ring
->count
; i
++) {
2110 buffer_info
= &rx_ring
->buffer_info
[i
];
2111 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
2112 sizeof(struct e1000_ps_page
),
2114 if (!buffer_info
->ps_pages
)
2118 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
2120 /* Round up to nearest 4K */
2121 rx_ring
->size
= rx_ring
->count
* desc_len
;
2122 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
2124 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
2128 rx_ring
->next_to_clean
= 0;
2129 rx_ring
->next_to_use
= 0;
2130 rx_ring
->rx_skb_top
= NULL
;
2135 for (i
= 0; i
< rx_ring
->count
; i
++) {
2136 buffer_info
= &rx_ring
->buffer_info
[i
];
2137 kfree(buffer_info
->ps_pages
);
2140 vfree(rx_ring
->buffer_info
);
2141 e_err("Unable to allocate memory for the receive descriptor ring\n");
2146 * e1000_clean_tx_ring - Free Tx Buffers
2147 * @adapter: board private structure
2149 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
)
2151 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2152 struct e1000_buffer
*buffer_info
;
2156 for (i
= 0; i
< tx_ring
->count
; i
++) {
2157 buffer_info
= &tx_ring
->buffer_info
[i
];
2158 e1000_put_txbuf(adapter
, buffer_info
);
2161 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2162 memset(tx_ring
->buffer_info
, 0, size
);
2164 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2166 tx_ring
->next_to_use
= 0;
2167 tx_ring
->next_to_clean
= 0;
2169 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
2170 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
2174 * e1000e_free_tx_resources - Free Tx Resources per Queue
2175 * @adapter: board private structure
2177 * Free all transmit software resources
2179 void e1000e_free_tx_resources(struct e1000_adapter
*adapter
)
2181 struct pci_dev
*pdev
= adapter
->pdev
;
2182 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2184 e1000_clean_tx_ring(adapter
);
2186 vfree(tx_ring
->buffer_info
);
2187 tx_ring
->buffer_info
= NULL
;
2189 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
2191 tx_ring
->desc
= NULL
;
2195 * e1000e_free_rx_resources - Free Rx Resources
2196 * @adapter: board private structure
2198 * Free all receive software resources
2201 void e1000e_free_rx_resources(struct e1000_adapter
*adapter
)
2203 struct pci_dev
*pdev
= adapter
->pdev
;
2204 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2207 e1000_clean_rx_ring(adapter
);
2209 for (i
= 0; i
< rx_ring
->count
; i
++)
2210 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
2212 vfree(rx_ring
->buffer_info
);
2213 rx_ring
->buffer_info
= NULL
;
2215 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
2217 rx_ring
->desc
= NULL
;
2221 * e1000_update_itr - update the dynamic ITR value based on statistics
2222 * @adapter: pointer to adapter
2223 * @itr_setting: current adapter->itr
2224 * @packets: the number of packets during this measurement interval
2225 * @bytes: the number of bytes during this measurement interval
2227 * Stores a new ITR value based on packets and byte
2228 * counts during the last interrupt. The advantage of per interrupt
2229 * computation is faster updates and more accurate ITR for the current
2230 * traffic pattern. Constants in this function were computed
2231 * based on theoretical maximum wire speed and thresholds were set based
2232 * on testing data as well as attempting to minimize response time
2233 * while increasing bulk throughput. This functionality is controlled
2234 * by the InterruptThrottleRate module parameter.
2236 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
2237 u16 itr_setting
, int packets
,
2240 unsigned int retval
= itr_setting
;
2243 goto update_itr_done
;
2245 switch (itr_setting
) {
2246 case lowest_latency
:
2247 /* handle TSO and jumbo frames */
2248 if (bytes
/packets
> 8000)
2249 retval
= bulk_latency
;
2250 else if ((packets
< 5) && (bytes
> 512))
2251 retval
= low_latency
;
2253 case low_latency
: /* 50 usec aka 20000 ints/s */
2254 if (bytes
> 10000) {
2255 /* this if handles the TSO accounting */
2256 if (bytes
/packets
> 8000)
2257 retval
= bulk_latency
;
2258 else if ((packets
< 10) || ((bytes
/packets
) > 1200))
2259 retval
= bulk_latency
;
2260 else if ((packets
> 35))
2261 retval
= lowest_latency
;
2262 } else if (bytes
/packets
> 2000) {
2263 retval
= bulk_latency
;
2264 } else if (packets
<= 2 && bytes
< 512) {
2265 retval
= lowest_latency
;
2268 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2269 if (bytes
> 25000) {
2271 retval
= low_latency
;
2272 } else if (bytes
< 6000) {
2273 retval
= low_latency
;
2282 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2284 struct e1000_hw
*hw
= &adapter
->hw
;
2286 u32 new_itr
= adapter
->itr
;
2288 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2289 if (adapter
->link_speed
!= SPEED_1000
) {
2295 if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
2300 adapter
->tx_itr
= e1000_update_itr(adapter
,
2302 adapter
->total_tx_packets
,
2303 adapter
->total_tx_bytes
);
2304 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2305 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
2306 adapter
->tx_itr
= low_latency
;
2308 adapter
->rx_itr
= e1000_update_itr(adapter
,
2310 adapter
->total_rx_packets
,
2311 adapter
->total_rx_bytes
);
2312 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2313 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2314 adapter
->rx_itr
= low_latency
;
2316 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2318 switch (current_itr
) {
2319 /* counts and packets in update_itr are dependent on these numbers */
2320 case lowest_latency
:
2324 new_itr
= 20000; /* aka hwitr = ~200 */
2334 if (new_itr
!= adapter
->itr
) {
2336 * this attempts to bias the interrupt rate towards Bulk
2337 * by adding intermediate steps when interrupt rate is
2340 new_itr
= new_itr
> adapter
->itr
?
2341 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2343 adapter
->itr
= new_itr
;
2344 adapter
->rx_ring
->itr_val
= new_itr
;
2345 if (adapter
->msix_entries
)
2346 adapter
->rx_ring
->set_itr
= 1;
2349 ew32(ITR
, 1000000000 / (new_itr
* 256));
2356 * e1000_alloc_queues - Allocate memory for all rings
2357 * @adapter: board private structure to initialize
2359 static int __devinit
e1000_alloc_queues(struct e1000_adapter
*adapter
)
2361 adapter
->tx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
2362 if (!adapter
->tx_ring
)
2365 adapter
->rx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
2366 if (!adapter
->rx_ring
)
2371 e_err("Unable to allocate memory for queues\n");
2372 kfree(adapter
->rx_ring
);
2373 kfree(adapter
->tx_ring
);
2378 * e1000_clean - NAPI Rx polling callback
2379 * @napi: struct associated with this polling callback
2380 * @budget: amount of packets driver is allowed to process this poll
2382 static int e1000_clean(struct napi_struct
*napi
, int budget
)
2384 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
2385 struct e1000_hw
*hw
= &adapter
->hw
;
2386 struct net_device
*poll_dev
= adapter
->netdev
;
2387 int tx_cleaned
= 1, work_done
= 0;
2389 adapter
= netdev_priv(poll_dev
);
2391 if (adapter
->msix_entries
&&
2392 !(adapter
->rx_ring
->ims_val
& adapter
->tx_ring
->ims_val
))
2395 tx_cleaned
= e1000_clean_tx_irq(adapter
);
2398 adapter
->clean_rx(adapter
, &work_done
, budget
);
2403 /* If budget not fully consumed, exit the polling mode */
2404 if (work_done
< budget
) {
2405 if (adapter
->itr_setting
& 3)
2406 e1000_set_itr(adapter
);
2407 napi_complete(napi
);
2408 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
2409 if (adapter
->msix_entries
)
2410 ew32(IMS
, adapter
->rx_ring
->ims_val
);
2412 e1000_irq_enable(adapter
);
2419 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
2421 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2422 struct e1000_hw
*hw
= &adapter
->hw
;
2425 /* don't update vlan cookie if already programmed */
2426 if ((adapter
->hw
.mng_cookie
.status
&
2427 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2428 (vid
== adapter
->mng_vlan_id
))
2431 /* add VID to filter table */
2432 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2433 index
= (vid
>> 5) & 0x7F;
2434 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2435 vfta
|= (1 << (vid
& 0x1F));
2436 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2439 set_bit(vid
, adapter
->active_vlans
);
2442 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
2444 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2445 struct e1000_hw
*hw
= &adapter
->hw
;
2448 if ((adapter
->hw
.mng_cookie
.status
&
2449 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2450 (vid
== adapter
->mng_vlan_id
)) {
2451 /* release control to f/w */
2452 e1000e_release_hw_control(adapter
);
2456 /* remove VID from filter table */
2457 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2458 index
= (vid
>> 5) & 0x7F;
2459 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2460 vfta
&= ~(1 << (vid
& 0x1F));
2461 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2464 clear_bit(vid
, adapter
->active_vlans
);
2468 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
2469 * @adapter: board private structure to initialize
2471 static void e1000e_vlan_filter_disable(struct e1000_adapter
*adapter
)
2473 struct net_device
*netdev
= adapter
->netdev
;
2474 struct e1000_hw
*hw
= &adapter
->hw
;
2477 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2478 /* disable VLAN receive filtering */
2480 rctl
&= ~(E1000_RCTL_VFE
| E1000_RCTL_CFIEN
);
2483 if (adapter
->mng_vlan_id
!= (u16
)E1000_MNG_VLAN_NONE
) {
2484 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
2485 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2491 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
2492 * @adapter: board private structure to initialize
2494 static void e1000e_vlan_filter_enable(struct e1000_adapter
*adapter
)
2496 struct e1000_hw
*hw
= &adapter
->hw
;
2499 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2500 /* enable VLAN receive filtering */
2502 rctl
|= E1000_RCTL_VFE
;
2503 rctl
&= ~E1000_RCTL_CFIEN
;
2509 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping
2510 * @adapter: board private structure to initialize
2512 static void e1000e_vlan_strip_disable(struct e1000_adapter
*adapter
)
2514 struct e1000_hw
*hw
= &adapter
->hw
;
2517 /* disable VLAN tag insert/strip */
2519 ctrl
&= ~E1000_CTRL_VME
;
2524 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
2525 * @adapter: board private structure to initialize
2527 static void e1000e_vlan_strip_enable(struct e1000_adapter
*adapter
)
2529 struct e1000_hw
*hw
= &adapter
->hw
;
2532 /* enable VLAN tag insert/strip */
2534 ctrl
|= E1000_CTRL_VME
;
2538 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
2540 struct net_device
*netdev
= adapter
->netdev
;
2541 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
2542 u16 old_vid
= adapter
->mng_vlan_id
;
2544 if (adapter
->hw
.mng_cookie
.status
&
2545 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
2546 e1000_vlan_rx_add_vid(netdev
, vid
);
2547 adapter
->mng_vlan_id
= vid
;
2550 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) && (vid
!= old_vid
))
2551 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
2554 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
2558 e1000_vlan_rx_add_vid(adapter
->netdev
, 0);
2560 for_each_set_bit(vid
, adapter
->active_vlans
, VLAN_N_VID
)
2561 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
2564 static void e1000_init_manageability_pt(struct e1000_adapter
*adapter
)
2566 struct e1000_hw
*hw
= &adapter
->hw
;
2567 u32 manc
, manc2h
, mdef
, i
, j
;
2569 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
2575 * enable receiving management packets to the host. this will probably
2576 * generate destination unreachable messages from the host OS, but
2577 * the packets will be handled on SMBUS
2579 manc
|= E1000_MANC_EN_MNG2HOST
;
2580 manc2h
= er32(MANC2H
);
2582 switch (hw
->mac
.type
) {
2584 manc2h
|= (E1000_MANC2H_PORT_623
| E1000_MANC2H_PORT_664
);
2589 * Check if IPMI pass-through decision filter already exists;
2592 for (i
= 0, j
= 0; i
< 8; i
++) {
2593 mdef
= er32(MDEF(i
));
2595 /* Ignore filters with anything other than IPMI ports */
2596 if (mdef
& ~(E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2599 /* Enable this decision filter in MANC2H */
2606 if (j
== (E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2609 /* Create new decision filter in an empty filter */
2610 for (i
= 0, j
= 0; i
< 8; i
++)
2611 if (er32(MDEF(i
)) == 0) {
2612 ew32(MDEF(i
), (E1000_MDEF_PORT_623
|
2613 E1000_MDEF_PORT_664
));
2620 e_warn("Unable to create IPMI pass-through filter\n");
2624 ew32(MANC2H
, manc2h
);
2629 * e1000_configure_tx - Configure Transmit Unit after Reset
2630 * @adapter: board private structure
2632 * Configure the Tx unit of the MAC after a reset.
2634 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
2636 struct e1000_hw
*hw
= &adapter
->hw
;
2637 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2639 u32 tdlen
, tctl
, tipg
, tarc
;
2642 /* Setup the HW Tx Head and Tail descriptor pointers */
2643 tdba
= tx_ring
->dma
;
2644 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2645 ew32(TDBAL
, (tdba
& DMA_BIT_MASK(32)));
2646 ew32(TDBAH
, (tdba
>> 32));
2650 tx_ring
->head
= E1000_TDH
;
2651 tx_ring
->tail
= E1000_TDT
;
2653 /* Set the default values for the Tx Inter Packet Gap timer */
2654 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
; /* 8 */
2655 ipgr1
= DEFAULT_82543_TIPG_IPGR1
; /* 8 */
2656 ipgr2
= DEFAULT_82543_TIPG_IPGR2
; /* 6 */
2658 if (adapter
->flags
& FLAG_TIPG_MEDIUM_FOR_80003ESLAN
)
2659 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
; /* 7 */
2661 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
2662 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
2665 /* Set the Tx Interrupt Delay register */
2666 ew32(TIDV
, adapter
->tx_int_delay
);
2667 /* Tx irq moderation */
2668 ew32(TADV
, adapter
->tx_abs_int_delay
);
2670 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
2671 u32 txdctl
= er32(TXDCTL(0));
2672 txdctl
&= ~(E1000_TXDCTL_PTHRESH
| E1000_TXDCTL_HTHRESH
|
2673 E1000_TXDCTL_WTHRESH
);
2675 * set up some performance related parameters to encourage the
2676 * hardware to use the bus more efficiently in bursts, depends
2677 * on the tx_int_delay to be enabled,
2678 * wthresh = 5 ==> burst write a cacheline (64 bytes) at a time
2679 * hthresh = 1 ==> prefetch when one or more available
2680 * pthresh = 0x1f ==> prefetch if internal cache 31 or less
2681 * BEWARE: this seems to work but should be considered first if
2682 * there are Tx hangs or other Tx related bugs
2684 txdctl
|= E1000_TXDCTL_DMA_BURST_ENABLE
;
2685 ew32(TXDCTL(0), txdctl
);
2686 /* erratum work around: set txdctl the same for both queues */
2687 ew32(TXDCTL(1), txdctl
);
2690 /* Program the Transmit Control Register */
2692 tctl
&= ~E1000_TCTL_CT
;
2693 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
2694 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
2696 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
2697 tarc
= er32(TARC(0));
2699 * set the speed mode bit, we'll clear it if we're not at
2700 * gigabit link later
2702 #define SPEED_MODE_BIT (1 << 21)
2703 tarc
|= SPEED_MODE_BIT
;
2704 ew32(TARC(0), tarc
);
2707 /* errata: program both queues to unweighted RR */
2708 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
2709 tarc
= er32(TARC(0));
2711 ew32(TARC(0), tarc
);
2712 tarc
= er32(TARC(1));
2714 ew32(TARC(1), tarc
);
2717 /* Setup Transmit Descriptor Settings for eop descriptor */
2718 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
2720 /* only set IDE if we are delaying interrupts using the timers */
2721 if (adapter
->tx_int_delay
)
2722 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
2724 /* enable Report Status bit */
2725 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
2729 e1000e_config_collision_dist(hw
);
2733 * e1000_setup_rctl - configure the receive control registers
2734 * @adapter: Board private structure
2736 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2737 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2738 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
2740 struct e1000_hw
*hw
= &adapter
->hw
;
2744 /* Workaround Si errata on 82579 - configure jumbo frame flow */
2745 if (hw
->mac
.type
== e1000_pch2lan
) {
2748 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
)
2749 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, true);
2751 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, false);
2754 e_dbg("failed to enable jumbo frame workaround mode\n");
2757 /* Program MC offset vector base */
2759 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
2760 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
2761 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
2762 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
2764 /* Do not Store bad packets */
2765 rctl
&= ~E1000_RCTL_SBP
;
2767 /* Enable Long Packet receive */
2768 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
2769 rctl
&= ~E1000_RCTL_LPE
;
2771 rctl
|= E1000_RCTL_LPE
;
2773 /* Some systems expect that the CRC is included in SMBUS traffic. The
2774 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2775 * host memory when this is enabled
2777 if (adapter
->flags2
& FLAG2_CRC_STRIPPING
)
2778 rctl
|= E1000_RCTL_SECRC
;
2780 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
2781 if ((hw
->phy
.type
== e1000_phy_82577
) && (rctl
& E1000_RCTL_LPE
)) {
2784 e1e_rphy(hw
, PHY_REG(770, 26), &phy_data
);
2786 phy_data
|= (1 << 2);
2787 e1e_wphy(hw
, PHY_REG(770, 26), phy_data
);
2789 e1e_rphy(hw
, 22, &phy_data
);
2791 phy_data
|= (1 << 14);
2792 e1e_wphy(hw
, 0x10, 0x2823);
2793 e1e_wphy(hw
, 0x11, 0x0003);
2794 e1e_wphy(hw
, 22, phy_data
);
2797 /* Setup buffer sizes */
2798 rctl
&= ~E1000_RCTL_SZ_4096
;
2799 rctl
|= E1000_RCTL_BSEX
;
2800 switch (adapter
->rx_buffer_len
) {
2803 rctl
|= E1000_RCTL_SZ_2048
;
2804 rctl
&= ~E1000_RCTL_BSEX
;
2807 rctl
|= E1000_RCTL_SZ_4096
;
2810 rctl
|= E1000_RCTL_SZ_8192
;
2813 rctl
|= E1000_RCTL_SZ_16384
;
2818 * 82571 and greater support packet-split where the protocol
2819 * header is placed in skb->data and the packet data is
2820 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2821 * In the case of a non-split, skb->data is linearly filled,
2822 * followed by the page buffers. Therefore, skb->data is
2823 * sized to hold the largest protocol header.
2825 * allocations using alloc_page take too long for regular MTU
2826 * so only enable packet split for jumbo frames
2828 * Using pages when the page size is greater than 16k wastes
2829 * a lot of memory, since we allocate 3 pages at all times
2832 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
2833 if (!(adapter
->flags
& FLAG_HAS_ERT
) && (pages
<= 3) &&
2834 (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
2835 adapter
->rx_ps_pages
= pages
;
2837 adapter
->rx_ps_pages
= 0;
2839 if (adapter
->rx_ps_pages
) {
2842 /* Configure extra packet-split registers */
2843 rfctl
= er32(RFCTL
);
2844 rfctl
|= E1000_RFCTL_EXTEN
;
2846 * disable packet split support for IPv6 extension headers,
2847 * because some malformed IPv6 headers can hang the Rx
2849 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
2850 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
2854 /* Enable Packet split descriptors */
2855 rctl
|= E1000_RCTL_DTYP_PS
;
2857 psrctl
|= adapter
->rx_ps_bsize0
>>
2858 E1000_PSRCTL_BSIZE0_SHIFT
;
2860 switch (adapter
->rx_ps_pages
) {
2862 psrctl
|= PAGE_SIZE
<<
2863 E1000_PSRCTL_BSIZE3_SHIFT
;
2865 psrctl
|= PAGE_SIZE
<<
2866 E1000_PSRCTL_BSIZE2_SHIFT
;
2868 psrctl
|= PAGE_SIZE
>>
2869 E1000_PSRCTL_BSIZE1_SHIFT
;
2873 ew32(PSRCTL
, psrctl
);
2877 /* just started the receive unit, no need to restart */
2878 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
2882 * e1000_configure_rx - Configure Receive Unit after Reset
2883 * @adapter: board private structure
2885 * Configure the Rx unit of the MAC after a reset.
2887 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
2889 struct e1000_hw
*hw
= &adapter
->hw
;
2890 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2892 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
2894 if (adapter
->rx_ps_pages
) {
2895 /* this is a 32 byte descriptor */
2896 rdlen
= rx_ring
->count
*
2897 sizeof(union e1000_rx_desc_packet_split
);
2898 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
2899 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
2900 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2901 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2902 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
2903 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
2905 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2906 adapter
->clean_rx
= e1000_clean_rx_irq
;
2907 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
2910 /* disable receives while setting up the descriptors */
2912 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2914 usleep_range(10000, 20000);
2916 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
2918 * set the writeback threshold (only takes effect if the RDTR
2919 * is set). set GRAN=1 and write back up to 0x4 worth, and
2920 * enable prefetching of 0x20 Rx descriptors
2926 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE
);
2927 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE
);
2930 * override the delay timers for enabling bursting, only if
2931 * the value was not set by the user via module options
2933 if (adapter
->rx_int_delay
== DEFAULT_RDTR
)
2934 adapter
->rx_int_delay
= BURST_RDTR
;
2935 if (adapter
->rx_abs_int_delay
== DEFAULT_RADV
)
2936 adapter
->rx_abs_int_delay
= BURST_RADV
;
2939 /* set the Receive Delay Timer Register */
2940 ew32(RDTR
, adapter
->rx_int_delay
);
2942 /* irq moderation */
2943 ew32(RADV
, adapter
->rx_abs_int_delay
);
2944 if ((adapter
->itr_setting
!= 0) && (adapter
->itr
!= 0))
2945 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
2947 ctrl_ext
= er32(CTRL_EXT
);
2948 /* Auto-Mask interrupts upon ICR access */
2949 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
2950 ew32(IAM
, 0xffffffff);
2951 ew32(CTRL_EXT
, ctrl_ext
);
2955 * Setup the HW Rx Head and Tail Descriptor Pointers and
2956 * the Base and Length of the Rx Descriptor Ring
2958 rdba
= rx_ring
->dma
;
2959 ew32(RDBAL
, (rdba
& DMA_BIT_MASK(32)));
2960 ew32(RDBAH
, (rdba
>> 32));
2964 rx_ring
->head
= E1000_RDH
;
2965 rx_ring
->tail
= E1000_RDT
;
2967 /* Enable Receive Checksum Offload for TCP and UDP */
2968 rxcsum
= er32(RXCSUM
);
2969 if (adapter
->flags
& FLAG_RX_CSUM_ENABLED
) {
2970 rxcsum
|= E1000_RXCSUM_TUOFL
;
2973 * IPv4 payload checksum for UDP fragments must be
2974 * used in conjunction with packet-split.
2976 if (adapter
->rx_ps_pages
)
2977 rxcsum
|= E1000_RXCSUM_IPPCSE
;
2979 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2980 /* no need to clear IPPCSE as it defaults to 0 */
2982 ew32(RXCSUM
, rxcsum
);
2985 * Enable early receives on supported devices, only takes effect when
2986 * packet size is equal or larger than the specified value (in 8 byte
2987 * units), e.g. using jumbo frames when setting to E1000_ERT_2048
2989 if ((adapter
->flags
& FLAG_HAS_ERT
) ||
2990 (adapter
->hw
.mac
.type
== e1000_pch2lan
)) {
2991 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
2992 u32 rxdctl
= er32(RXDCTL(0));
2993 ew32(RXDCTL(0), rxdctl
| 0x3);
2994 if (adapter
->flags
& FLAG_HAS_ERT
)
2995 ew32(ERT
, E1000_ERT_2048
| (1 << 13));
2997 * With jumbo frames and early-receive enabled,
2998 * excessive C-state transition latencies result in
2999 * dropped transactions.
3001 pm_qos_update_request(&adapter
->netdev
->pm_qos_req
, 55);
3003 pm_qos_update_request(&adapter
->netdev
->pm_qos_req
,
3004 PM_QOS_DEFAULT_VALUE
);
3008 /* Enable Receives */
3013 * e1000_update_mc_addr_list - Update Multicast addresses
3014 * @hw: pointer to the HW structure
3015 * @mc_addr_list: array of multicast addresses to program
3016 * @mc_addr_count: number of multicast addresses to program
3018 * Updates the Multicast Table Array.
3019 * The caller must have a packed mc_addr_list of multicast addresses.
3021 static void e1000_update_mc_addr_list(struct e1000_hw
*hw
, u8
*mc_addr_list
,
3024 hw
->mac
.ops
.update_mc_addr_list(hw
, mc_addr_list
, mc_addr_count
);
3028 * e1000_set_multi - Multicast and Promiscuous mode set
3029 * @netdev: network interface device structure
3031 * The set_multi entry point is called whenever the multicast address
3032 * list or the network interface flags are updated. This routine is
3033 * responsible for configuring the hardware for proper multicast,
3034 * promiscuous mode, and all-multi behavior.
3036 static void e1000_set_multi(struct net_device
*netdev
)
3038 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3039 struct e1000_hw
*hw
= &adapter
->hw
;
3040 struct netdev_hw_addr
*ha
;
3044 /* Check for Promiscuous and All Multicast modes */
3048 if (netdev
->flags
& IFF_PROMISC
) {
3049 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3050 rctl
&= ~E1000_RCTL_VFE
;
3051 /* Do not hardware filter VLANs in promisc mode */
3052 e1000e_vlan_filter_disable(adapter
);
3054 if (netdev
->flags
& IFF_ALLMULTI
) {
3055 rctl
|= E1000_RCTL_MPE
;
3056 rctl
&= ~E1000_RCTL_UPE
;
3058 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3060 e1000e_vlan_filter_enable(adapter
);
3065 if (!netdev_mc_empty(netdev
)) {
3068 mta_list
= kmalloc(netdev_mc_count(netdev
) * 6, GFP_ATOMIC
);
3072 /* prepare a packed array of only addresses. */
3073 netdev_for_each_mc_addr(ha
, netdev
)
3074 memcpy(mta_list
+ (i
++ * ETH_ALEN
), ha
->addr
, ETH_ALEN
);
3076 e1000_update_mc_addr_list(hw
, mta_list
, i
);
3080 * if we're called from probe, we might not have
3081 * anything to do here, so clear out the list
3083 e1000_update_mc_addr_list(hw
, NULL
, 0);
3086 if (netdev
->features
& NETIF_F_HW_VLAN_RX
)
3087 e1000e_vlan_strip_enable(adapter
);
3089 e1000e_vlan_strip_disable(adapter
);
3093 * e1000_configure - configure the hardware for Rx and Tx
3094 * @adapter: private board structure
3096 static void e1000_configure(struct e1000_adapter
*adapter
)
3098 e1000_set_multi(adapter
->netdev
);
3100 e1000_restore_vlan(adapter
);
3101 e1000_init_manageability_pt(adapter
);
3103 e1000_configure_tx(adapter
);
3104 e1000_setup_rctl(adapter
);
3105 e1000_configure_rx(adapter
);
3106 adapter
->alloc_rx_buf(adapter
, e1000_desc_unused(adapter
->rx_ring
));
3110 * e1000e_power_up_phy - restore link in case the phy was powered down
3111 * @adapter: address of board private structure
3113 * The phy may be powered down to save power and turn off link when the
3114 * driver is unloaded and wake on lan is not enabled (among others)
3115 * *** this routine MUST be followed by a call to e1000e_reset ***
3117 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
3119 if (adapter
->hw
.phy
.ops
.power_up
)
3120 adapter
->hw
.phy
.ops
.power_up(&adapter
->hw
);
3122 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
3126 * e1000_power_down_phy - Power down the PHY
3128 * Power down the PHY so no link is implied when interface is down.
3129 * The PHY cannot be powered down if management or WoL is active.
3131 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
3133 /* WoL is enabled */
3137 if (adapter
->hw
.phy
.ops
.power_down
)
3138 adapter
->hw
.phy
.ops
.power_down(&adapter
->hw
);
3142 * e1000e_reset - bring the hardware into a known good state
3144 * This function boots the hardware and enables some settings that
3145 * require a configuration cycle of the hardware - those cannot be
3146 * set/changed during runtime. After reset the device needs to be
3147 * properly configured for Rx, Tx etc.
3149 void e1000e_reset(struct e1000_adapter
*adapter
)
3151 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3152 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
3153 struct e1000_hw
*hw
= &adapter
->hw
;
3154 u32 tx_space
, min_tx_space
, min_rx_space
;
3155 u32 pba
= adapter
->pba
;
3158 /* reset Packet Buffer Allocation to default */
3161 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3163 * To maintain wire speed transmits, the Tx FIFO should be
3164 * large enough to accommodate two full transmit packets,
3165 * rounded up to the next 1KB and expressed in KB. Likewise,
3166 * the Rx FIFO should be large enough to accommodate at least
3167 * one full receive packet and is similarly rounded up and
3171 /* upper 16 bits has Tx packet buffer allocation size in KB */
3172 tx_space
= pba
>> 16;
3173 /* lower 16 bits has Rx packet buffer allocation size in KB */
3176 * the Tx fifo also stores 16 bytes of information about the Tx
3177 * but don't include ethernet FCS because hardware appends it
3179 min_tx_space
= (adapter
->max_frame_size
+
3180 sizeof(struct e1000_tx_desc
) -
3182 min_tx_space
= ALIGN(min_tx_space
, 1024);
3183 min_tx_space
>>= 10;
3184 /* software strips receive CRC, so leave room for it */
3185 min_rx_space
= adapter
->max_frame_size
;
3186 min_rx_space
= ALIGN(min_rx_space
, 1024);
3187 min_rx_space
>>= 10;
3190 * If current Tx allocation is less than the min Tx FIFO size,
3191 * and the min Tx FIFO size is less than the current Rx FIFO
3192 * allocation, take space away from current Rx allocation
3194 if ((tx_space
< min_tx_space
) &&
3195 ((min_tx_space
- tx_space
) < pba
)) {
3196 pba
-= min_tx_space
- tx_space
;
3199 * if short on Rx space, Rx wins and must trump Tx
3200 * adjustment or use Early Receive if available
3202 if ((pba
< min_rx_space
) &&
3203 (!(adapter
->flags
& FLAG_HAS_ERT
)))
3204 /* ERT enabled in e1000_configure_rx */
3212 * flow control settings
3214 * The high water mark must be low enough to fit one full frame
3215 * (or the size used for early receive) above it in the Rx FIFO.
3216 * Set it to the lower of:
3217 * - 90% of the Rx FIFO size, and
3218 * - the full Rx FIFO size minus the early receive size (for parts
3219 * with ERT support assuming ERT set to E1000_ERT_2048), or
3220 * - the full Rx FIFO size minus one full frame
3222 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
3223 fc
->pause_time
= 0xFFFF;
3225 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
3227 fc
->current_mode
= fc
->requested_mode
;
3229 switch (hw
->mac
.type
) {
3231 if ((adapter
->flags
& FLAG_HAS_ERT
) &&
3232 (adapter
->netdev
->mtu
> ETH_DATA_LEN
))
3233 hwm
= min(((pba
<< 10) * 9 / 10),
3234 ((pba
<< 10) - (E1000_ERT_2048
<< 3)));
3236 hwm
= min(((pba
<< 10) * 9 / 10),
3237 ((pba
<< 10) - adapter
->max_frame_size
));
3239 fc
->high_water
= hwm
& E1000_FCRTH_RTH
; /* 8-byte granularity */
3240 fc
->low_water
= fc
->high_water
- 8;
3244 * Workaround PCH LOM adapter hangs with certain network
3245 * loads. If hangs persist, try disabling Tx flow control.
3247 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3248 fc
->high_water
= 0x3500;
3249 fc
->low_water
= 0x1500;
3251 fc
->high_water
= 0x5000;
3252 fc
->low_water
= 0x3000;
3254 fc
->refresh_time
= 0x1000;
3257 fc
->high_water
= 0x05C20;
3258 fc
->low_water
= 0x05048;
3259 fc
->pause_time
= 0x0650;
3260 fc
->refresh_time
= 0x0400;
3261 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3269 * Disable Adaptive Interrupt Moderation if 2 full packets cannot
3270 * fit in receive buffer and early-receive not supported.
3272 if (adapter
->itr_setting
& 0x3) {
3273 if (((adapter
->max_frame_size
* 2) > (pba
<< 10)) &&
3274 !(adapter
->flags
& FLAG_HAS_ERT
)) {
3275 if (!(adapter
->flags2
& FLAG2_DISABLE_AIM
)) {
3276 dev_info(&adapter
->pdev
->dev
,
3277 "Interrupt Throttle Rate turned off\n");
3278 adapter
->flags2
|= FLAG2_DISABLE_AIM
;
3281 } else if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
3282 dev_info(&adapter
->pdev
->dev
,
3283 "Interrupt Throttle Rate turned on\n");
3284 adapter
->flags2
&= ~FLAG2_DISABLE_AIM
;
3285 adapter
->itr
= 20000;
3286 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
3290 /* Allow time for pending master requests to run */
3291 mac
->ops
.reset_hw(hw
);
3294 * For parts with AMT enabled, let the firmware know
3295 * that the network interface is in control
3297 if (adapter
->flags
& FLAG_HAS_AMT
)
3298 e1000e_get_hw_control(adapter
);
3302 if (mac
->ops
.init_hw(hw
))
3303 e_err("Hardware Error\n");
3305 e1000_update_mng_vlan(adapter
);
3307 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3308 ew32(VET
, ETH_P_8021Q
);
3310 e1000e_reset_adaptive(hw
);
3312 if (!netif_running(adapter
->netdev
) &&
3313 !test_bit(__E1000_TESTING
, &adapter
->state
)) {
3314 e1000_power_down_phy(adapter
);
3318 e1000_get_phy_info(hw
);
3320 if ((adapter
->flags
& FLAG_HAS_SMART_POWER_DOWN
) &&
3321 !(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
3324 * speed up time to link by disabling smart power down, ignore
3325 * the return value of this function because there is nothing
3326 * different we would do if it failed
3328 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
3329 phy_data
&= ~IGP02E1000_PM_SPD
;
3330 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
3334 int e1000e_up(struct e1000_adapter
*adapter
)
3336 struct e1000_hw
*hw
= &adapter
->hw
;
3338 /* hardware has been reset, we need to reload some things */
3339 e1000_configure(adapter
);
3341 clear_bit(__E1000_DOWN
, &adapter
->state
);
3343 napi_enable(&adapter
->napi
);
3344 if (adapter
->msix_entries
)
3345 e1000_configure_msix(adapter
);
3346 e1000_irq_enable(adapter
);
3348 netif_wake_queue(adapter
->netdev
);
3350 /* fire a link change interrupt to start the watchdog */
3351 if (adapter
->msix_entries
)
3352 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
3354 ew32(ICS
, E1000_ICS_LSC
);
3359 static void e1000e_flush_descriptors(struct e1000_adapter
*adapter
)
3361 struct e1000_hw
*hw
= &adapter
->hw
;
3363 if (!(adapter
->flags2
& FLAG2_DMA_BURST
))
3366 /* flush pending descriptor writebacks to memory */
3367 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
3368 ew32(RDTR
, adapter
->rx_int_delay
| E1000_RDTR_FPD
);
3370 /* execute the writes immediately */
3374 static void e1000e_update_stats(struct e1000_adapter
*adapter
);
3376 void e1000e_down(struct e1000_adapter
*adapter
)
3378 struct net_device
*netdev
= adapter
->netdev
;
3379 struct e1000_hw
*hw
= &adapter
->hw
;
3383 * signal that we're down so the interrupt handler does not
3384 * reschedule our watchdog timer
3386 set_bit(__E1000_DOWN
, &adapter
->state
);
3388 /* disable receives in the hardware */
3390 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3391 /* flush and sleep below */
3393 netif_stop_queue(netdev
);
3395 /* disable transmits in the hardware */
3397 tctl
&= ~E1000_TCTL_EN
;
3399 /* flush both disables and wait for them to finish */
3401 usleep_range(10000, 20000);
3403 napi_disable(&adapter
->napi
);
3404 e1000_irq_disable(adapter
);
3406 del_timer_sync(&adapter
->watchdog_timer
);
3407 del_timer_sync(&adapter
->phy_info_timer
);
3409 netif_carrier_off(netdev
);
3411 spin_lock(&adapter
->stats64_lock
);
3412 e1000e_update_stats(adapter
);
3413 spin_unlock(&adapter
->stats64_lock
);
3415 adapter
->link_speed
= 0;
3416 adapter
->link_duplex
= 0;
3418 if (!pci_channel_offline(adapter
->pdev
))
3419 e1000e_reset(adapter
);
3421 e1000e_flush_descriptors(adapter
);
3423 e1000_clean_tx_ring(adapter
);
3424 e1000_clean_rx_ring(adapter
);
3427 * TODO: for power management, we could drop the link and
3428 * pci_disable_device here.
3432 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
3435 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
3436 usleep_range(1000, 2000);
3437 e1000e_down(adapter
);
3439 clear_bit(__E1000_RESETTING
, &adapter
->state
);
3443 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
3444 * @adapter: board private structure to initialize
3446 * e1000_sw_init initializes the Adapter private data structure.
3447 * Fields are initialized based on PCI device information and
3448 * OS network device settings (MTU size).
3450 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
3452 struct net_device
*netdev
= adapter
->netdev
;
3454 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
3455 adapter
->rx_ps_bsize0
= 128;
3456 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3457 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
3459 spin_lock_init(&adapter
->stats64_lock
);
3461 e1000e_set_interrupt_capability(adapter
);
3463 if (e1000_alloc_queues(adapter
))
3466 /* Explicitly disable IRQ since the NIC can be in any state. */
3467 e1000_irq_disable(adapter
);
3469 set_bit(__E1000_DOWN
, &adapter
->state
);
3474 * e1000_intr_msi_test - Interrupt Handler
3475 * @irq: interrupt number
3476 * @data: pointer to a network interface device structure
3478 static irqreturn_t
e1000_intr_msi_test(int irq
, void *data
)
3480 struct net_device
*netdev
= data
;
3481 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3482 struct e1000_hw
*hw
= &adapter
->hw
;
3483 u32 icr
= er32(ICR
);
3485 e_dbg("icr is %08X\n", icr
);
3486 if (icr
& E1000_ICR_RXSEQ
) {
3487 adapter
->flags
&= ~FLAG_MSI_TEST_FAILED
;
3495 * e1000_test_msi_interrupt - Returns 0 for successful test
3496 * @adapter: board private struct
3498 * code flow taken from tg3.c
3500 static int e1000_test_msi_interrupt(struct e1000_adapter
*adapter
)
3502 struct net_device
*netdev
= adapter
->netdev
;
3503 struct e1000_hw
*hw
= &adapter
->hw
;
3506 /* poll_enable hasn't been called yet, so don't need disable */
3507 /* clear any pending events */
3510 /* free the real vector and request a test handler */
3511 e1000_free_irq(adapter
);
3512 e1000e_reset_interrupt_capability(adapter
);
3514 /* Assume that the test fails, if it succeeds then the test
3515 * MSI irq handler will unset this flag */
3516 adapter
->flags
|= FLAG_MSI_TEST_FAILED
;
3518 err
= pci_enable_msi(adapter
->pdev
);
3520 goto msi_test_failed
;
3522 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi_test
, 0,
3523 netdev
->name
, netdev
);
3525 pci_disable_msi(adapter
->pdev
);
3526 goto msi_test_failed
;
3531 e1000_irq_enable(adapter
);
3533 /* fire an unusual interrupt on the test handler */
3534 ew32(ICS
, E1000_ICS_RXSEQ
);
3538 e1000_irq_disable(adapter
);
3542 if (adapter
->flags
& FLAG_MSI_TEST_FAILED
) {
3543 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
3544 e_info("MSI interrupt test failed, using legacy interrupt.\n");
3546 e_dbg("MSI interrupt test succeeded!\n");
3548 free_irq(adapter
->pdev
->irq
, netdev
);
3549 pci_disable_msi(adapter
->pdev
);
3552 e1000e_set_interrupt_capability(adapter
);
3553 return e1000_request_irq(adapter
);
3557 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3558 * @adapter: board private struct
3560 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3562 static int e1000_test_msi(struct e1000_adapter
*adapter
)
3567 if (!(adapter
->flags
& FLAG_MSI_ENABLED
))
3570 /* disable SERR in case the MSI write causes a master abort */
3571 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3572 if (pci_cmd
& PCI_COMMAND_SERR
)
3573 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
,
3574 pci_cmd
& ~PCI_COMMAND_SERR
);
3576 err
= e1000_test_msi_interrupt(adapter
);
3578 /* re-enable SERR */
3579 if (pci_cmd
& PCI_COMMAND_SERR
) {
3580 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3581 pci_cmd
|= PCI_COMMAND_SERR
;
3582 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
, pci_cmd
);
3589 * e1000_open - Called when a network interface is made active
3590 * @netdev: network interface device structure
3592 * Returns 0 on success, negative value on failure
3594 * The open entry point is called when a network interface is made
3595 * active by the system (IFF_UP). At this point all resources needed
3596 * for transmit and receive operations are allocated, the interrupt
3597 * handler is registered with the OS, the watchdog timer is started,
3598 * and the stack is notified that the interface is ready.
3600 static int e1000_open(struct net_device
*netdev
)
3602 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3603 struct e1000_hw
*hw
= &adapter
->hw
;
3604 struct pci_dev
*pdev
= adapter
->pdev
;
3607 /* disallow open during test */
3608 if (test_bit(__E1000_TESTING
, &adapter
->state
))
3611 pm_runtime_get_sync(&pdev
->dev
);
3613 netif_carrier_off(netdev
);
3615 /* allocate transmit descriptors */
3616 err
= e1000e_setup_tx_resources(adapter
);
3620 /* allocate receive descriptors */
3621 err
= e1000e_setup_rx_resources(adapter
);
3626 * If AMT is enabled, let the firmware know that the network
3627 * interface is now open and reset the part to a known state.
3629 if (adapter
->flags
& FLAG_HAS_AMT
) {
3630 e1000e_get_hw_control(adapter
);
3631 e1000e_reset(adapter
);
3634 e1000e_power_up_phy(adapter
);
3636 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
3637 if ((adapter
->hw
.mng_cookie
.status
&
3638 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
3639 e1000_update_mng_vlan(adapter
);
3641 /* DMA latency requirement to workaround early-receive/jumbo issue */
3642 if ((adapter
->flags
& FLAG_HAS_ERT
) ||
3643 (adapter
->hw
.mac
.type
== e1000_pch2lan
))
3644 pm_qos_add_request(&adapter
->netdev
->pm_qos_req
,
3645 PM_QOS_CPU_DMA_LATENCY
,
3646 PM_QOS_DEFAULT_VALUE
);
3649 * before we allocate an interrupt, we must be ready to handle it.
3650 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3651 * as soon as we call pci_request_irq, so we have to setup our
3652 * clean_rx handler before we do so.
3654 e1000_configure(adapter
);
3656 err
= e1000_request_irq(adapter
);
3661 * Work around PCIe errata with MSI interrupts causing some chipsets to
3662 * ignore e1000e MSI messages, which means we need to test our MSI
3665 if (adapter
->int_mode
!= E1000E_INT_MODE_LEGACY
) {
3666 err
= e1000_test_msi(adapter
);
3668 e_err("Interrupt allocation failed\n");
3673 /* From here on the code is the same as e1000e_up() */
3674 clear_bit(__E1000_DOWN
, &adapter
->state
);
3676 napi_enable(&adapter
->napi
);
3678 e1000_irq_enable(adapter
);
3680 netif_start_queue(netdev
);
3682 adapter
->idle_check
= true;
3683 pm_runtime_put(&pdev
->dev
);
3685 /* fire a link status change interrupt to start the watchdog */
3686 if (adapter
->msix_entries
)
3687 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
3689 ew32(ICS
, E1000_ICS_LSC
);
3694 e1000e_release_hw_control(adapter
);
3695 e1000_power_down_phy(adapter
);
3696 e1000e_free_rx_resources(adapter
);
3698 e1000e_free_tx_resources(adapter
);
3700 e1000e_reset(adapter
);
3701 pm_runtime_put_sync(&pdev
->dev
);
3707 * e1000_close - Disables a network interface
3708 * @netdev: network interface device structure
3710 * Returns 0, this is not allowed to fail
3712 * The close entry point is called when an interface is de-activated
3713 * by the OS. The hardware is still under the drivers control, but
3714 * needs to be disabled. A global MAC reset is issued to stop the
3715 * hardware, and all transmit and receive resources are freed.
3717 static int e1000_close(struct net_device
*netdev
)
3719 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3720 struct pci_dev
*pdev
= adapter
->pdev
;
3722 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
3724 pm_runtime_get_sync(&pdev
->dev
);
3726 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
3727 e1000e_down(adapter
);
3728 e1000_free_irq(adapter
);
3730 e1000_power_down_phy(adapter
);
3732 e1000e_free_tx_resources(adapter
);
3733 e1000e_free_rx_resources(adapter
);
3736 * kill manageability vlan ID if supported, but not if a vlan with
3737 * the same ID is registered on the host OS (let 8021q kill it)
3739 if (adapter
->hw
.mng_cookie
.status
&
3740 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)
3741 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
3744 * If AMT is enabled, let the firmware know that the network
3745 * interface is now closed
3747 if ((adapter
->flags
& FLAG_HAS_AMT
) &&
3748 !test_bit(__E1000_TESTING
, &adapter
->state
))
3749 e1000e_release_hw_control(adapter
);
3751 if ((adapter
->flags
& FLAG_HAS_ERT
) ||
3752 (adapter
->hw
.mac
.type
== e1000_pch2lan
))
3753 pm_qos_remove_request(&adapter
->netdev
->pm_qos_req
);
3755 pm_runtime_put_sync(&pdev
->dev
);
3760 * e1000_set_mac - Change the Ethernet Address of the NIC
3761 * @netdev: network interface device structure
3762 * @p: pointer to an address structure
3764 * Returns 0 on success, negative on failure
3766 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
3768 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3769 struct sockaddr
*addr
= p
;
3771 if (!is_valid_ether_addr(addr
->sa_data
))
3772 return -EADDRNOTAVAIL
;
3774 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
3775 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
3777 e1000e_rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
3779 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
3780 /* activate the work around */
3781 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
3784 * Hold a copy of the LAA in RAR[14] This is done so that
3785 * between the time RAR[0] gets clobbered and the time it
3786 * gets fixed (in e1000_watchdog), the actual LAA is in one
3787 * of the RARs and no incoming packets directed to this port
3788 * are dropped. Eventually the LAA will be in RAR[0] and
3791 e1000e_rar_set(&adapter
->hw
,
3792 adapter
->hw
.mac
.addr
,
3793 adapter
->hw
.mac
.rar_entry_count
- 1);
3800 * e1000e_update_phy_task - work thread to update phy
3801 * @work: pointer to our work struct
3803 * this worker thread exists because we must acquire a
3804 * semaphore to read the phy, which we could msleep while
3805 * waiting for it, and we can't msleep in a timer.
3807 static void e1000e_update_phy_task(struct work_struct
*work
)
3809 struct e1000_adapter
*adapter
= container_of(work
,
3810 struct e1000_adapter
, update_phy_task
);
3812 if (test_bit(__E1000_DOWN
, &adapter
->state
))
3815 e1000_get_phy_info(&adapter
->hw
);
3819 * Need to wait a few seconds after link up to get diagnostic information from
3822 static void e1000_update_phy_info(unsigned long data
)
3824 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3826 if (test_bit(__E1000_DOWN
, &adapter
->state
))
3829 schedule_work(&adapter
->update_phy_task
);
3833 * e1000e_update_phy_stats - Update the PHY statistics counters
3834 * @adapter: board private structure
3836 static void e1000e_update_phy_stats(struct e1000_adapter
*adapter
)
3838 struct e1000_hw
*hw
= &adapter
->hw
;
3842 ret_val
= hw
->phy
.ops
.acquire(hw
);
3848 #define HV_PHY_STATS_PAGE 778
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.
3853 ret_val
= e1000e_read_phy_reg_mdic(hw
, IGP01E1000_PHY_PAGE_SELECT
,
3857 if (phy_data
!= (HV_PHY_STATS_PAGE
<< IGP_PAGE_SHIFT
)) {
3858 ret_val
= e1000e_write_phy_reg_mdic(hw
,
3859 IGP01E1000_PHY_PAGE_SELECT
,
3860 (HV_PHY_STATS_PAGE
<<
3866 /* Read/clear the upper 16-bit registers and read/accumulate lower */
3868 /* Single Collision Count */
3869 e1000e_read_phy_reg_mdic(hw
, HV_SCC_UPPER
& MAX_PHY_REG_ADDRESS
,
3871 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3872 HV_SCC_LOWER
& MAX_PHY_REG_ADDRESS
,
3875 adapter
->stats
.scc
+= phy_data
;
3877 /* Excessive Collision Count */
3878 e1000e_read_phy_reg_mdic(hw
, HV_ECOL_UPPER
& MAX_PHY_REG_ADDRESS
,
3880 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3881 HV_ECOL_LOWER
& MAX_PHY_REG_ADDRESS
,
3884 adapter
->stats
.ecol
+= phy_data
;
3886 /* Multiple Collision Count */
3887 e1000e_read_phy_reg_mdic(hw
, HV_MCC_UPPER
& MAX_PHY_REG_ADDRESS
,
3889 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3890 HV_MCC_LOWER
& MAX_PHY_REG_ADDRESS
,
3893 adapter
->stats
.mcc
+= phy_data
;
3895 /* Late Collision Count */
3896 e1000e_read_phy_reg_mdic(hw
, HV_LATECOL_UPPER
& MAX_PHY_REG_ADDRESS
,
3898 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3900 MAX_PHY_REG_ADDRESS
,
3903 adapter
->stats
.latecol
+= phy_data
;
3905 /* Collision Count - also used for adaptive IFS */
3906 e1000e_read_phy_reg_mdic(hw
, HV_COLC_UPPER
& MAX_PHY_REG_ADDRESS
,
3908 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3909 HV_COLC_LOWER
& MAX_PHY_REG_ADDRESS
,
3912 hw
->mac
.collision_delta
= phy_data
;
3915 e1000e_read_phy_reg_mdic(hw
, HV_DC_UPPER
& MAX_PHY_REG_ADDRESS
,
3917 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3918 HV_DC_LOWER
& MAX_PHY_REG_ADDRESS
,
3921 adapter
->stats
.dc
+= phy_data
;
3923 /* Transmit with no CRS */
3924 e1000e_read_phy_reg_mdic(hw
, HV_TNCRS_UPPER
& MAX_PHY_REG_ADDRESS
,
3926 ret_val
= e1000e_read_phy_reg_mdic(hw
,
3927 HV_TNCRS_LOWER
& MAX_PHY_REG_ADDRESS
,
3930 adapter
->stats
.tncrs
+= phy_data
;
3933 hw
->phy
.ops
.release(hw
);
3937 * e1000e_update_stats - Update the board statistics counters
3938 * @adapter: board private structure
3940 static void e1000e_update_stats(struct e1000_adapter
*adapter
)
3942 struct net_device
*netdev
= adapter
->netdev
;
3943 struct e1000_hw
*hw
= &adapter
->hw
;
3944 struct pci_dev
*pdev
= adapter
->pdev
;
3947 * Prevent stats update while adapter is being reset, or if the pci
3948 * connection is down.
3950 if (adapter
->link_speed
== 0)
3952 if (pci_channel_offline(pdev
))
3955 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
3956 adapter
->stats
.gprc
+= er32(GPRC
);
3957 adapter
->stats
.gorc
+= er32(GORCL
);
3958 er32(GORCH
); /* Clear gorc */
3959 adapter
->stats
.bprc
+= er32(BPRC
);
3960 adapter
->stats
.mprc
+= er32(MPRC
);
3961 adapter
->stats
.roc
+= er32(ROC
);
3963 adapter
->stats
.mpc
+= er32(MPC
);
3965 /* Half-duplex statistics */
3966 if (adapter
->link_duplex
== HALF_DUPLEX
) {
3967 if (adapter
->flags2
& FLAG2_HAS_PHY_STATS
) {
3968 e1000e_update_phy_stats(adapter
);
3970 adapter
->stats
.scc
+= er32(SCC
);
3971 adapter
->stats
.ecol
+= er32(ECOL
);
3972 adapter
->stats
.mcc
+= er32(MCC
);
3973 adapter
->stats
.latecol
+= er32(LATECOL
);
3974 adapter
->stats
.dc
+= er32(DC
);
3976 hw
->mac
.collision_delta
= er32(COLC
);
3978 if ((hw
->mac
.type
!= e1000_82574
) &&
3979 (hw
->mac
.type
!= e1000_82583
))
3980 adapter
->stats
.tncrs
+= er32(TNCRS
);
3982 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
3985 adapter
->stats
.xonrxc
+= er32(XONRXC
);
3986 adapter
->stats
.xontxc
+= er32(XONTXC
);
3987 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
3988 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
3989 adapter
->stats
.gptc
+= er32(GPTC
);
3990 adapter
->stats
.gotc
+= er32(GOTCL
);
3991 er32(GOTCH
); /* Clear gotc */
3992 adapter
->stats
.rnbc
+= er32(RNBC
);
3993 adapter
->stats
.ruc
+= er32(RUC
);
3995 adapter
->stats
.mptc
+= er32(MPTC
);
3996 adapter
->stats
.bptc
+= er32(BPTC
);
3998 /* used for adaptive IFS */
4000 hw
->mac
.tx_packet_delta
= er32(TPT
);
4001 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
4003 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
4004 adapter
->stats
.rxerrc
+= er32(RXERRC
);
4005 adapter
->stats
.cexterr
+= er32(CEXTERR
);
4006 adapter
->stats
.tsctc
+= er32(TSCTC
);
4007 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
4009 /* Fill out the OS statistics structure */
4010 netdev
->stats
.multicast
= adapter
->stats
.mprc
;
4011 netdev
->stats
.collisions
= adapter
->stats
.colc
;
4016 * RLEC on some newer hardware can be incorrect so build
4017 * our own version based on RUC and ROC
4019 netdev
->stats
.rx_errors
= adapter
->stats
.rxerrc
+
4020 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
4021 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
4022 adapter
->stats
.cexterr
;
4023 netdev
->stats
.rx_length_errors
= adapter
->stats
.ruc
+
4025 netdev
->stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
4026 netdev
->stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
4027 netdev
->stats
.rx_missed_errors
= adapter
->stats
.mpc
;
4030 netdev
->stats
.tx_errors
= adapter
->stats
.ecol
+
4031 adapter
->stats
.latecol
;
4032 netdev
->stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
4033 netdev
->stats
.tx_window_errors
= adapter
->stats
.latecol
;
4034 netdev
->stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
4036 /* Tx Dropped needs to be maintained elsewhere */
4038 /* Management Stats */
4039 adapter
->stats
.mgptc
+= er32(MGTPTC
);
4040 adapter
->stats
.mgprc
+= er32(MGTPRC
);
4041 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
4045 * e1000_phy_read_status - Update the PHY register status snapshot
4046 * @adapter: board private structure
4048 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
4050 struct e1000_hw
*hw
= &adapter
->hw
;
4051 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
4053 if ((er32(STATUS
) & E1000_STATUS_LU
) &&
4054 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
4057 ret_val
= e1e_rphy(hw
, PHY_CONTROL
, &phy
->bmcr
);
4058 ret_val
|= e1e_rphy(hw
, PHY_STATUS
, &phy
->bmsr
);
4059 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_ADV
, &phy
->advertise
);
4060 ret_val
|= e1e_rphy(hw
, PHY_LP_ABILITY
, &phy
->lpa
);
4061 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_EXP
, &phy
->expansion
);
4062 ret_val
|= e1e_rphy(hw
, PHY_1000T_CTRL
, &phy
->ctrl1000
);
4063 ret_val
|= e1e_rphy(hw
, PHY_1000T_STATUS
, &phy
->stat1000
);
4064 ret_val
|= e1e_rphy(hw
, PHY_EXT_STATUS
, &phy
->estatus
);
4066 e_warn("Error reading PHY register\n");
4069 * Do not read PHY registers if link is not up
4070 * Set values to typical power-on defaults
4072 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
4073 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
4074 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
4076 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
4077 ADVERTISE_ALL
| ADVERTISE_CSMA
);
4079 phy
->expansion
= EXPANSION_ENABLENPAGE
;
4080 phy
->ctrl1000
= ADVERTISE_1000FULL
;
4082 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
4086 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
4088 struct e1000_hw
*hw
= &adapter
->hw
;
4089 u32 ctrl
= er32(CTRL
);
4091 /* Link status message must follow this format for user tools */
4092 printk(KERN_INFO
"e1000e: %s NIC Link is Up %d Mbps %s, "
4093 "Flow Control: %s\n",
4094 adapter
->netdev
->name
,
4095 adapter
->link_speed
,
4096 (adapter
->link_duplex
== FULL_DUPLEX
) ?
4097 "Full Duplex" : "Half Duplex",
4098 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
)) ?
4100 ((ctrl
& E1000_CTRL_RFCE
) ? "Rx" :
4101 ((ctrl
& E1000_CTRL_TFCE
) ? "Tx" : "None")));
4104 static bool e1000e_has_link(struct e1000_adapter
*adapter
)
4106 struct e1000_hw
*hw
= &adapter
->hw
;
4107 bool link_active
= 0;
4111 * get_link_status is set on LSC (link status) interrupt or
4112 * Rx sequence error interrupt. get_link_status will stay
4113 * false until the check_for_link establishes link
4114 * for copper adapters ONLY
4116 switch (hw
->phy
.media_type
) {
4117 case e1000_media_type_copper
:
4118 if (hw
->mac
.get_link_status
) {
4119 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4120 link_active
= !hw
->mac
.get_link_status
;
4125 case e1000_media_type_fiber
:
4126 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4127 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
4129 case e1000_media_type_internal_serdes
:
4130 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4131 link_active
= adapter
->hw
.mac
.serdes_has_link
;
4134 case e1000_media_type_unknown
:
4138 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
4139 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
4140 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
4141 e_info("Gigabit has been disabled, downgrading speed\n");
4147 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
4149 /* make sure the receive unit is started */
4150 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
4151 (adapter
->flags
& FLAG_RX_RESTART_NOW
)) {
4152 struct e1000_hw
*hw
= &adapter
->hw
;
4153 u32 rctl
= er32(RCTL
);
4154 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
4155 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
4159 static void e1000e_check_82574_phy_workaround(struct e1000_adapter
*adapter
)
4161 struct e1000_hw
*hw
= &adapter
->hw
;
4164 * With 82574 controllers, PHY needs to be checked periodically
4165 * for hung state and reset, if two calls return true
4167 if (e1000_check_phy_82574(hw
))
4168 adapter
->phy_hang_count
++;
4170 adapter
->phy_hang_count
= 0;
4172 if (adapter
->phy_hang_count
> 1) {
4173 adapter
->phy_hang_count
= 0;
4174 schedule_work(&adapter
->reset_task
);
4179 * e1000_watchdog - Timer Call-back
4180 * @data: pointer to adapter cast into an unsigned long
4182 static void e1000_watchdog(unsigned long data
)
4184 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
4186 /* Do the rest outside of interrupt context */
4187 schedule_work(&adapter
->watchdog_task
);
4189 /* TODO: make this use queue_delayed_work() */
4192 static void e1000_watchdog_task(struct work_struct
*work
)
4194 struct e1000_adapter
*adapter
= container_of(work
,
4195 struct e1000_adapter
, watchdog_task
);
4196 struct net_device
*netdev
= adapter
->netdev
;
4197 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
4198 struct e1000_phy_info
*phy
= &adapter
->hw
.phy
;
4199 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4200 struct e1000_hw
*hw
= &adapter
->hw
;
4203 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4206 link
= e1000e_has_link(adapter
);
4207 if ((netif_carrier_ok(netdev
)) && link
) {
4208 /* Cancel scheduled suspend requests. */
4209 pm_runtime_resume(netdev
->dev
.parent
);
4211 e1000e_enable_receives(adapter
);
4215 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
4216 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
4217 e1000_update_mng_vlan(adapter
);
4220 if (!netif_carrier_ok(netdev
)) {
4223 /* Cancel scheduled suspend requests. */
4224 pm_runtime_resume(netdev
->dev
.parent
);
4226 /* update snapshot of PHY registers on LSC */
4227 e1000_phy_read_status(adapter
);
4228 mac
->ops
.get_link_up_info(&adapter
->hw
,
4229 &adapter
->link_speed
,
4230 &adapter
->link_duplex
);
4231 e1000_print_link_info(adapter
);
4233 * On supported PHYs, check for duplex mismatch only
4234 * if link has autonegotiated at 10/100 half
4236 if ((hw
->phy
.type
== e1000_phy_igp_3
||
4237 hw
->phy
.type
== e1000_phy_bm
) &&
4238 (hw
->mac
.autoneg
== true) &&
4239 (adapter
->link_speed
== SPEED_10
||
4240 adapter
->link_speed
== SPEED_100
) &&
4241 (adapter
->link_duplex
== HALF_DUPLEX
)) {
4244 e1e_rphy(hw
, PHY_AUTONEG_EXP
, &autoneg_exp
);
4246 if (!(autoneg_exp
& NWAY_ER_LP_NWAY_CAPS
))
4247 e_info("Autonegotiated half duplex but"
4248 " link partner cannot autoneg. "
4249 " Try forcing full duplex if "
4250 "link gets many collisions.\n");
4253 /* adjust timeout factor according to speed/duplex */
4254 adapter
->tx_timeout_factor
= 1;
4255 switch (adapter
->link_speed
) {
4258 adapter
->tx_timeout_factor
= 16;
4262 adapter
->tx_timeout_factor
= 10;
4267 * workaround: re-program speed mode bit after
4270 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
4273 tarc0
= er32(TARC(0));
4274 tarc0
&= ~SPEED_MODE_BIT
;
4275 ew32(TARC(0), tarc0
);
4279 * disable TSO for pcie and 10/100 speeds, to avoid
4280 * some hardware issues
4282 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
4283 switch (adapter
->link_speed
) {
4286 e_info("10/100 speed: disabling TSO\n");
4287 netdev
->features
&= ~NETIF_F_TSO
;
4288 netdev
->features
&= ~NETIF_F_TSO6
;
4291 netdev
->features
|= NETIF_F_TSO
;
4292 netdev
->features
|= NETIF_F_TSO6
;
4301 * enable transmits in the hardware, need to do this
4302 * after setting TARC(0)
4305 tctl
|= E1000_TCTL_EN
;
4309 * Perform any post-link-up configuration before
4310 * reporting link up.
4312 if (phy
->ops
.cfg_on_link_up
)
4313 phy
->ops
.cfg_on_link_up(hw
);
4315 netif_carrier_on(netdev
);
4317 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4318 mod_timer(&adapter
->phy_info_timer
,
4319 round_jiffies(jiffies
+ 2 * HZ
));
4322 if (netif_carrier_ok(netdev
)) {
4323 adapter
->link_speed
= 0;
4324 adapter
->link_duplex
= 0;
4325 /* Link status message must follow this format */
4326 printk(KERN_INFO
"e1000e: %s NIC Link is Down\n",
4327 adapter
->netdev
->name
);
4328 netif_carrier_off(netdev
);
4329 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4330 mod_timer(&adapter
->phy_info_timer
,
4331 round_jiffies(jiffies
+ 2 * HZ
));
4333 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
4334 schedule_work(&adapter
->reset_task
);
4336 pm_schedule_suspend(netdev
->dev
.parent
,
4342 spin_lock(&adapter
->stats64_lock
);
4343 e1000e_update_stats(adapter
);
4345 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
4346 adapter
->tpt_old
= adapter
->stats
.tpt
;
4347 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
4348 adapter
->colc_old
= adapter
->stats
.colc
;
4350 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
4351 adapter
->gorc_old
= adapter
->stats
.gorc
;
4352 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
4353 adapter
->gotc_old
= adapter
->stats
.gotc
;
4354 spin_unlock(&adapter
->stats64_lock
);
4356 e1000e_update_adaptive(&adapter
->hw
);
4358 if (!netif_carrier_ok(netdev
) &&
4359 (e1000_desc_unused(tx_ring
) + 1 < tx_ring
->count
)) {
4361 * We've lost link, so the controller stops DMA,
4362 * but we've got queued Tx work that's never going
4363 * to get done, so reset controller to flush Tx.
4364 * (Do the reset outside of interrupt context).
4366 schedule_work(&adapter
->reset_task
);
4367 /* return immediately since reset is imminent */
4371 /* Simple mode for Interrupt Throttle Rate (ITR) */
4372 if (adapter
->itr_setting
== 4) {
4374 * Symmetric Tx/Rx gets a reduced ITR=2000;
4375 * Total asymmetrical Tx or Rx gets ITR=8000;
4376 * everyone else is between 2000-8000.
4378 u32 goc
= (adapter
->gotc
+ adapter
->gorc
) / 10000;
4379 u32 dif
= (adapter
->gotc
> adapter
->gorc
?
4380 adapter
->gotc
- adapter
->gorc
:
4381 adapter
->gorc
- adapter
->gotc
) / 10000;
4382 u32 itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
4384 ew32(ITR
, 1000000000 / (itr
* 256));
4387 /* Cause software interrupt to ensure Rx ring is cleaned */
4388 if (adapter
->msix_entries
)
4389 ew32(ICS
, adapter
->rx_ring
->ims_val
);
4391 ew32(ICS
, E1000_ICS_RXDMT0
);
4393 /* flush pending descriptors to memory before detecting Tx hang */
4394 e1000e_flush_descriptors(adapter
);
4396 /* Force detection of hung controller every watchdog period */
4397 adapter
->detect_tx_hung
= 1;
4400 * With 82571 controllers, LAA may be overwritten due to controller
4401 * reset from the other port. Set the appropriate LAA in RAR[0]
4403 if (e1000e_get_laa_state_82571(hw
))
4404 e1000e_rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
4406 if (adapter
->flags2
& FLAG2_CHECK_PHY_HANG
)
4407 e1000e_check_82574_phy_workaround(adapter
);
4409 /* Reset the timer */
4410 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4411 mod_timer(&adapter
->watchdog_timer
,
4412 round_jiffies(jiffies
+ 2 * HZ
));
4415 #define E1000_TX_FLAGS_CSUM 0x00000001
4416 #define E1000_TX_FLAGS_VLAN 0x00000002
4417 #define E1000_TX_FLAGS_TSO 0x00000004
4418 #define E1000_TX_FLAGS_IPV4 0x00000008
4419 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
4420 #define E1000_TX_FLAGS_VLAN_SHIFT 16
4422 static int e1000_tso(struct e1000_adapter
*adapter
,
4423 struct sk_buff
*skb
)
4425 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4426 struct e1000_context_desc
*context_desc
;
4427 struct e1000_buffer
*buffer_info
;
4430 u16 ipcse
= 0, tucse
, mss
;
4431 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
4433 if (!skb_is_gso(skb
))
4436 if (skb_header_cloned(skb
)) {
4437 int err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
4443 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
4444 mss
= skb_shinfo(skb
)->gso_size
;
4445 if (skb
->protocol
== htons(ETH_P_IP
)) {
4446 struct iphdr
*iph
= ip_hdr(skb
);
4449 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
, iph
->daddr
,
4451 cmd_length
= E1000_TXD_CMD_IP
;
4452 ipcse
= skb_transport_offset(skb
) - 1;
4453 } else if (skb_is_gso_v6(skb
)) {
4454 ipv6_hdr(skb
)->payload_len
= 0;
4455 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
4456 &ipv6_hdr(skb
)->daddr
,
4460 ipcss
= skb_network_offset(skb
);
4461 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
4462 tucss
= skb_transport_offset(skb
);
4463 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
4466 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
4467 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
4469 i
= tx_ring
->next_to_use
;
4470 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
4471 buffer_info
= &tx_ring
->buffer_info
[i
];
4473 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
4474 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
4475 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
4476 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
4477 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
4478 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
4479 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
4480 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
4481 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
4483 buffer_info
->time_stamp
= jiffies
;
4484 buffer_info
->next_to_watch
= i
;
4487 if (i
== tx_ring
->count
)
4489 tx_ring
->next_to_use
= i
;
4494 static bool e1000_tx_csum(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
4496 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4497 struct e1000_context_desc
*context_desc
;
4498 struct e1000_buffer
*buffer_info
;
4501 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
4504 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
4507 if (skb
->protocol
== cpu_to_be16(ETH_P_8021Q
))
4508 protocol
= vlan_eth_hdr(skb
)->h_vlan_encapsulated_proto
;
4510 protocol
= skb
->protocol
;
4513 case cpu_to_be16(ETH_P_IP
):
4514 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
4515 cmd_len
|= E1000_TXD_CMD_TCP
;
4517 case cpu_to_be16(ETH_P_IPV6
):
4518 /* XXX not handling all IPV6 headers */
4519 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
4520 cmd_len
|= E1000_TXD_CMD_TCP
;
4523 if (unlikely(net_ratelimit()))
4524 e_warn("checksum_partial proto=%x!\n",
4525 be16_to_cpu(protocol
));
4529 css
= skb_checksum_start_offset(skb
);
4531 i
= tx_ring
->next_to_use
;
4532 buffer_info
= &tx_ring
->buffer_info
[i
];
4533 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
4535 context_desc
->lower_setup
.ip_config
= 0;
4536 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
4537 context_desc
->upper_setup
.tcp_fields
.tucso
=
4538 css
+ skb
->csum_offset
;
4539 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
4540 context_desc
->tcp_seg_setup
.data
= 0;
4541 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
4543 buffer_info
->time_stamp
= jiffies
;
4544 buffer_info
->next_to_watch
= i
;
4547 if (i
== tx_ring
->count
)
4549 tx_ring
->next_to_use
= i
;
4554 #define E1000_MAX_PER_TXD 8192
4555 #define E1000_MAX_TXD_PWR 12
4557 static int e1000_tx_map(struct e1000_adapter
*adapter
,
4558 struct sk_buff
*skb
, unsigned int first
,
4559 unsigned int max_per_txd
, unsigned int nr_frags
,
4562 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4563 struct pci_dev
*pdev
= adapter
->pdev
;
4564 struct e1000_buffer
*buffer_info
;
4565 unsigned int len
= skb_headlen(skb
);
4566 unsigned int offset
= 0, size
, count
= 0, i
;
4567 unsigned int f
, bytecount
, segs
;
4569 i
= tx_ring
->next_to_use
;
4572 buffer_info
= &tx_ring
->buffer_info
[i
];
4573 size
= min(len
, max_per_txd
);
4575 buffer_info
->length
= size
;
4576 buffer_info
->time_stamp
= jiffies
;
4577 buffer_info
->next_to_watch
= i
;
4578 buffer_info
->dma
= dma_map_single(&pdev
->dev
,
4580 size
, DMA_TO_DEVICE
);
4581 buffer_info
->mapped_as_page
= false;
4582 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
4591 if (i
== tx_ring
->count
)
4596 for (f
= 0; f
< nr_frags
; f
++) {
4597 struct skb_frag_struct
*frag
;
4599 frag
= &skb_shinfo(skb
)->frags
[f
];
4601 offset
= frag
->page_offset
;
4605 if (i
== tx_ring
->count
)
4608 buffer_info
= &tx_ring
->buffer_info
[i
];
4609 size
= min(len
, max_per_txd
);
4611 buffer_info
->length
= size
;
4612 buffer_info
->time_stamp
= jiffies
;
4613 buffer_info
->next_to_watch
= i
;
4614 buffer_info
->dma
= dma_map_page(&pdev
->dev
, frag
->page
,
4617 buffer_info
->mapped_as_page
= true;
4618 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
4627 segs
= skb_shinfo(skb
)->gso_segs
? : 1;
4628 /* multiply data chunks by size of headers */
4629 bytecount
= ((segs
- 1) * skb_headlen(skb
)) + skb
->len
;
4631 tx_ring
->buffer_info
[i
].skb
= skb
;
4632 tx_ring
->buffer_info
[i
].segs
= segs
;
4633 tx_ring
->buffer_info
[i
].bytecount
= bytecount
;
4634 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
4639 dev_err(&pdev
->dev
, "Tx DMA map failed\n");
4640 buffer_info
->dma
= 0;
4646 i
+= tx_ring
->count
;
4648 buffer_info
= &tx_ring
->buffer_info
[i
];
4649 e1000_put_txbuf(adapter
, buffer_info
);
4655 static void e1000_tx_queue(struct e1000_adapter
*adapter
,
4656 int tx_flags
, int count
)
4658 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4659 struct e1000_tx_desc
*tx_desc
= NULL
;
4660 struct e1000_buffer
*buffer_info
;
4661 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
4664 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
4665 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
4667 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
4669 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
4670 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
4673 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
4674 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
4675 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
4678 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
4679 txd_lower
|= E1000_TXD_CMD_VLE
;
4680 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
4683 i
= tx_ring
->next_to_use
;
4686 buffer_info
= &tx_ring
->buffer_info
[i
];
4687 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
4688 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4689 tx_desc
->lower
.data
=
4690 cpu_to_le32(txd_lower
| buffer_info
->length
);
4691 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
4694 if (i
== tx_ring
->count
)
4696 } while (--count
> 0);
4698 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
4701 * Force memory writes to complete before letting h/w
4702 * know there are new descriptors to fetch. (Only
4703 * applicable for weak-ordered memory model archs,
4708 tx_ring
->next_to_use
= i
;
4709 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
4711 * we need this if more than one processor can write to our tail
4712 * at a time, it synchronizes IO on IA64/Altix systems
4717 #define MINIMUM_DHCP_PACKET_SIZE 282
4718 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
4719 struct sk_buff
*skb
)
4721 struct e1000_hw
*hw
= &adapter
->hw
;
4724 if (vlan_tx_tag_present(skb
)) {
4725 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
4726 (adapter
->hw
.mng_cookie
.status
&
4727 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
4731 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
4734 if (((struct ethhdr
*) skb
->data
)->h_proto
!= htons(ETH_P_IP
))
4738 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+14);
4741 if (ip
->protocol
!= IPPROTO_UDP
)
4744 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
4745 if (ntohs(udp
->dest
) != 67)
4748 offset
= (u8
*)udp
+ 8 - skb
->data
;
4749 length
= skb
->len
- offset
;
4750 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
4756 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4758 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4760 netif_stop_queue(netdev
);
4762 * Herbert's original patch had:
4763 * smp_mb__after_netif_stop_queue();
4764 * but since that doesn't exist yet, just open code it.
4769 * We need to check again in a case another CPU has just
4770 * made room available.
4772 if (e1000_desc_unused(adapter
->tx_ring
) < size
)
4776 netif_start_queue(netdev
);
4777 ++adapter
->restart_queue
;
4781 static int e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4783 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4785 if (e1000_desc_unused(adapter
->tx_ring
) >= size
)
4787 return __e1000_maybe_stop_tx(netdev
, size
);
4790 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
4791 static netdev_tx_t
e1000_xmit_frame(struct sk_buff
*skb
,
4792 struct net_device
*netdev
)
4794 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4795 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4797 unsigned int max_per_txd
= E1000_MAX_PER_TXD
;
4798 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
4799 unsigned int tx_flags
= 0;
4800 unsigned int len
= skb_headlen(skb
);
4801 unsigned int nr_frags
;
4807 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
4808 dev_kfree_skb_any(skb
);
4809 return NETDEV_TX_OK
;
4812 if (skb
->len
<= 0) {
4813 dev_kfree_skb_any(skb
);
4814 return NETDEV_TX_OK
;
4817 mss
= skb_shinfo(skb
)->gso_size
;
4819 * The controller does a simple calculation to
4820 * make sure there is enough room in the FIFO before
4821 * initiating the DMA for each buffer. The calc is:
4822 * 4 = ceil(buffer len/mss). To make sure we don't
4823 * overrun the FIFO, adjust the max buffer len if mss
4828 max_per_txd
= min(mss
<< 2, max_per_txd
);
4829 max_txd_pwr
= fls(max_per_txd
) - 1;
4832 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
4833 * points to just header, pull a few bytes of payload from
4834 * frags into skb->data
4836 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
4838 * we do this workaround for ES2LAN, but it is un-necessary,
4839 * avoiding it could save a lot of cycles
4841 if (skb
->data_len
&& (hdr_len
== len
)) {
4842 unsigned int pull_size
;
4844 pull_size
= min((unsigned int)4, skb
->data_len
);
4845 if (!__pskb_pull_tail(skb
, pull_size
)) {
4846 e_err("__pskb_pull_tail failed.\n");
4847 dev_kfree_skb_any(skb
);
4848 return NETDEV_TX_OK
;
4850 len
= skb_headlen(skb
);
4854 /* reserve a descriptor for the offload context */
4855 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
4859 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
4861 nr_frags
= skb_shinfo(skb
)->nr_frags
;
4862 for (f
= 0; f
< nr_frags
; f
++)
4863 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
4866 if (adapter
->hw
.mac
.tx_pkt_filtering
)
4867 e1000_transfer_dhcp_info(adapter
, skb
);
4870 * need: count + 2 desc gap to keep tail from touching
4871 * head, otherwise try next time
4873 if (e1000_maybe_stop_tx(netdev
, count
+ 2))
4874 return NETDEV_TX_BUSY
;
4876 if (vlan_tx_tag_present(skb
)) {
4877 tx_flags
|= E1000_TX_FLAGS_VLAN
;
4878 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
4881 first
= tx_ring
->next_to_use
;
4883 tso
= e1000_tso(adapter
, skb
);
4885 dev_kfree_skb_any(skb
);
4886 return NETDEV_TX_OK
;
4890 tx_flags
|= E1000_TX_FLAGS_TSO
;
4891 else if (e1000_tx_csum(adapter
, skb
))
4892 tx_flags
|= E1000_TX_FLAGS_CSUM
;
4895 * Old method was to assume IPv4 packet by default if TSO was enabled.
4896 * 82571 hardware supports TSO capabilities for IPv6 as well...
4897 * no longer assume, we must.
4899 if (skb
->protocol
== htons(ETH_P_IP
))
4900 tx_flags
|= E1000_TX_FLAGS_IPV4
;
4902 /* if count is 0 then mapping error has occurred */
4903 count
= e1000_tx_map(adapter
, skb
, first
, max_per_txd
, nr_frags
, mss
);
4905 e1000_tx_queue(adapter
, tx_flags
, count
);
4906 /* Make sure there is space in the ring for the next send. */
4907 e1000_maybe_stop_tx(netdev
, MAX_SKB_FRAGS
+ 2);
4910 dev_kfree_skb_any(skb
);
4911 tx_ring
->buffer_info
[first
].time_stamp
= 0;
4912 tx_ring
->next_to_use
= first
;
4915 return NETDEV_TX_OK
;
4919 * e1000_tx_timeout - Respond to a Tx Hang
4920 * @netdev: network interface device structure
4922 static void e1000_tx_timeout(struct net_device
*netdev
)
4924 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4926 /* Do the reset outside of interrupt context */
4927 adapter
->tx_timeout_count
++;
4928 schedule_work(&adapter
->reset_task
);
4931 static void e1000_reset_task(struct work_struct
*work
)
4933 struct e1000_adapter
*adapter
;
4934 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
4936 /* don't run the task if already down */
4937 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4940 if (!((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
4941 (adapter
->flags
& FLAG_RX_RESTART_NOW
))) {
4942 e1000e_dump(adapter
);
4943 e_err("Reset adapter\n");
4945 e1000e_reinit_locked(adapter
);
4949 * e1000_get_stats64 - Get System Network Statistics
4950 * @netdev: network interface device structure
4951 * @stats: rtnl_link_stats64 pointer
4953 * Returns the address of the device statistics structure.
4955 struct rtnl_link_stats64
*e1000e_get_stats64(struct net_device
*netdev
,
4956 struct rtnl_link_stats64
*stats
)
4958 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4960 memset(stats
, 0, sizeof(struct rtnl_link_stats64
));
4961 spin_lock(&adapter
->stats64_lock
);
4962 e1000e_update_stats(adapter
);
4963 /* Fill out the OS statistics structure */
4964 stats
->rx_bytes
= adapter
->stats
.gorc
;
4965 stats
->rx_packets
= adapter
->stats
.gprc
;
4966 stats
->tx_bytes
= adapter
->stats
.gotc
;
4967 stats
->tx_packets
= adapter
->stats
.gptc
;
4968 stats
->multicast
= adapter
->stats
.mprc
;
4969 stats
->collisions
= adapter
->stats
.colc
;
4974 * RLEC on some newer hardware can be incorrect so build
4975 * our own version based on RUC and ROC
4977 stats
->rx_errors
= adapter
->stats
.rxerrc
+
4978 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
4979 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
4980 adapter
->stats
.cexterr
;
4981 stats
->rx_length_errors
= adapter
->stats
.ruc
+
4983 stats
->rx_crc_errors
= adapter
->stats
.crcerrs
;
4984 stats
->rx_frame_errors
= adapter
->stats
.algnerrc
;
4985 stats
->rx_missed_errors
= adapter
->stats
.mpc
;
4988 stats
->tx_errors
= adapter
->stats
.ecol
+
4989 adapter
->stats
.latecol
;
4990 stats
->tx_aborted_errors
= adapter
->stats
.ecol
;
4991 stats
->tx_window_errors
= adapter
->stats
.latecol
;
4992 stats
->tx_carrier_errors
= adapter
->stats
.tncrs
;
4994 /* Tx Dropped needs to be maintained elsewhere */
4996 spin_unlock(&adapter
->stats64_lock
);
5001 * e1000_change_mtu - Change the Maximum Transfer Unit
5002 * @netdev: network interface device structure
5003 * @new_mtu: new value for maximum frame size
5005 * Returns 0 on success, negative on failure
5007 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
5009 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5010 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
5012 /* Jumbo frame support */
5013 if ((max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) &&
5014 !(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
5015 e_err("Jumbo Frames not supported.\n");
5019 /* Supported frame sizes */
5020 if ((new_mtu
< ETH_ZLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
) ||
5021 (max_frame
> adapter
->max_hw_frame_size
)) {
5022 e_err("Unsupported MTU setting\n");
5026 /* Jumbo frame workaround on 82579 requires CRC be stripped */
5027 if ((adapter
->hw
.mac
.type
== e1000_pch2lan
) &&
5028 !(adapter
->flags2
& FLAG2_CRC_STRIPPING
) &&
5029 (new_mtu
> ETH_DATA_LEN
)) {
5030 e_err("Jumbo Frames not supported on 82579 when CRC "
5031 "stripping is disabled.\n");
5035 /* 82573 Errata 17 */
5036 if (((adapter
->hw
.mac
.type
== e1000_82573
) ||
5037 (adapter
->hw
.mac
.type
== e1000_82574
)) &&
5038 (max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
)) {
5039 adapter
->flags2
|= FLAG2_DISABLE_ASPM_L1
;
5040 e1000e_disable_aspm(adapter
->pdev
, PCIE_LINK_STATE_L1
);
5043 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
5044 usleep_range(1000, 2000);
5045 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
5046 adapter
->max_frame_size
= max_frame
;
5047 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
5048 netdev
->mtu
= new_mtu
;
5049 if (netif_running(netdev
))
5050 e1000e_down(adapter
);
5053 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
5054 * means we reserve 2 more, this pushes us to allocate from the next
5056 * i.e. RXBUFFER_2048 --> size-4096 slab
5057 * However with the new *_jumbo_rx* routines, jumbo receives will use
5061 if (max_frame
<= 2048)
5062 adapter
->rx_buffer_len
= 2048;
5064 adapter
->rx_buffer_len
= 4096;
5066 /* adjust allocation if LPE protects us, and we aren't using SBP */
5067 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
5068 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
5069 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
5072 if (netif_running(netdev
))
5075 e1000e_reset(adapter
);
5077 clear_bit(__E1000_RESETTING
, &adapter
->state
);
5082 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
5085 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5086 struct mii_ioctl_data
*data
= if_mii(ifr
);
5088 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
5093 data
->phy_id
= adapter
->hw
.phy
.addr
;
5096 e1000_phy_read_status(adapter
);
5098 switch (data
->reg_num
& 0x1F) {
5100 data
->val_out
= adapter
->phy_regs
.bmcr
;
5103 data
->val_out
= adapter
->phy_regs
.bmsr
;
5106 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
5109 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
5112 data
->val_out
= adapter
->phy_regs
.advertise
;
5115 data
->val_out
= adapter
->phy_regs
.lpa
;
5118 data
->val_out
= adapter
->phy_regs
.expansion
;
5121 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
5124 data
->val_out
= adapter
->phy_regs
.stat1000
;
5127 data
->val_out
= adapter
->phy_regs
.estatus
;
5140 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
5146 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
5152 static int e1000_init_phy_wakeup(struct e1000_adapter
*adapter
, u32 wufc
)
5154 struct e1000_hw
*hw
= &adapter
->hw
;
5159 /* copy MAC RARs to PHY RARs */
5160 e1000_copy_rx_addrs_to_phy_ich8lan(hw
);
5162 /* copy MAC MTA to PHY MTA */
5163 for (i
= 0; i
< adapter
->hw
.mac
.mta_reg_count
; i
++) {
5164 mac_reg
= E1000_READ_REG_ARRAY(hw
, E1000_MTA
, i
);
5165 e1e_wphy(hw
, BM_MTA(i
), (u16
)(mac_reg
& 0xFFFF));
5166 e1e_wphy(hw
, BM_MTA(i
) + 1, (u16
)((mac_reg
>> 16) & 0xFFFF));
5169 /* configure PHY Rx Control register */
5170 e1e_rphy(&adapter
->hw
, BM_RCTL
, &phy_reg
);
5171 mac_reg
= er32(RCTL
);
5172 if (mac_reg
& E1000_RCTL_UPE
)
5173 phy_reg
|= BM_RCTL_UPE
;
5174 if (mac_reg
& E1000_RCTL_MPE
)
5175 phy_reg
|= BM_RCTL_MPE
;
5176 phy_reg
&= ~(BM_RCTL_MO_MASK
);
5177 if (mac_reg
& E1000_RCTL_MO_3
)
5178 phy_reg
|= (((mac_reg
& E1000_RCTL_MO_3
) >> E1000_RCTL_MO_SHIFT
)
5179 << BM_RCTL_MO_SHIFT
);
5180 if (mac_reg
& E1000_RCTL_BAM
)
5181 phy_reg
|= BM_RCTL_BAM
;
5182 if (mac_reg
& E1000_RCTL_PMCF
)
5183 phy_reg
|= BM_RCTL_PMCF
;
5184 mac_reg
= er32(CTRL
);
5185 if (mac_reg
& E1000_CTRL_RFCE
)
5186 phy_reg
|= BM_RCTL_RFCE
;
5187 e1e_wphy(&adapter
->hw
, BM_RCTL
, phy_reg
);
5189 /* enable PHY wakeup in MAC register */
5191 ew32(WUC
, E1000_WUC_PHY_WAKE
| E1000_WUC_PME_EN
);
5193 /* configure and enable PHY wakeup in PHY registers */
5194 e1e_wphy(&adapter
->hw
, BM_WUFC
, wufc
);
5195 e1e_wphy(&adapter
->hw
, BM_WUC
, E1000_WUC_PME_EN
);
5197 /* activate PHY wakeup */
5198 retval
= hw
->phy
.ops
.acquire(hw
);
5200 e_err("Could not acquire PHY\n");
5203 e1000e_write_phy_reg_mdic(hw
, IGP01E1000_PHY_PAGE_SELECT
,
5204 (BM_WUC_ENABLE_PAGE
<< IGP_PAGE_SHIFT
));
5205 retval
= e1000e_read_phy_reg_mdic(hw
, BM_WUC_ENABLE_REG
, &phy_reg
);
5207 e_err("Could not read PHY page 769\n");
5210 phy_reg
|= BM_WUC_ENABLE_BIT
| BM_WUC_HOST_WU_BIT
;
5211 retval
= e1000e_write_phy_reg_mdic(hw
, BM_WUC_ENABLE_REG
, phy_reg
);
5213 e_err("Could not set PHY Host Wakeup bit\n");
5215 hw
->phy
.ops
.release(hw
);
5220 static int __e1000_shutdown(struct pci_dev
*pdev
, bool *enable_wake
,
5223 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5224 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5225 struct e1000_hw
*hw
= &adapter
->hw
;
5226 u32 ctrl
, ctrl_ext
, rctl
, status
;
5227 /* Runtime suspend should only enable wakeup for link changes */
5228 u32 wufc
= runtime
? E1000_WUFC_LNKC
: adapter
->wol
;
5231 netif_device_detach(netdev
);
5233 if (netif_running(netdev
)) {
5234 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
5235 e1000e_down(adapter
);
5236 e1000_free_irq(adapter
);
5238 e1000e_reset_interrupt_capability(adapter
);
5240 retval
= pci_save_state(pdev
);
5244 status
= er32(STATUS
);
5245 if (status
& E1000_STATUS_LU
)
5246 wufc
&= ~E1000_WUFC_LNKC
;
5249 e1000_setup_rctl(adapter
);
5250 e1000_set_multi(netdev
);
5252 /* turn on all-multi mode if wake on multicast is enabled */
5253 if (wufc
& E1000_WUFC_MC
) {
5255 rctl
|= E1000_RCTL_MPE
;
5260 /* advertise wake from D3Cold */
5261 #define E1000_CTRL_ADVD3WUC 0x00100000
5262 /* phy power management enable */
5263 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5264 ctrl
|= E1000_CTRL_ADVD3WUC
;
5265 if (!(adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
))
5266 ctrl
|= E1000_CTRL_EN_PHY_PWR_MGMT
;
5269 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
5270 adapter
->hw
.phy
.media_type
==
5271 e1000_media_type_internal_serdes
) {
5272 /* keep the laser running in D3 */
5273 ctrl_ext
= er32(CTRL_EXT
);
5274 ctrl_ext
|= E1000_CTRL_EXT_SDP3_DATA
;
5275 ew32(CTRL_EXT
, ctrl_ext
);
5278 if (adapter
->flags
& FLAG_IS_ICH
)
5279 e1000e_disable_gig_wol_ich8lan(&adapter
->hw
);
5281 /* Allow time for pending master requests to run */
5282 e1000e_disable_pcie_master(&adapter
->hw
);
5284 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
5285 /* enable wakeup by the PHY */
5286 retval
= e1000_init_phy_wakeup(adapter
, wufc
);
5290 /* enable wakeup by the MAC */
5292 ew32(WUC
, E1000_WUC_PME_EN
);
5299 *enable_wake
= !!wufc
;
5301 /* make sure adapter isn't asleep if manageability is enabled */
5302 if ((adapter
->flags
& FLAG_MNG_PT_ENABLED
) ||
5303 (hw
->mac
.ops
.check_mng_mode(hw
)))
5304 *enable_wake
= true;
5306 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
)
5307 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
5310 * Release control of h/w to f/w. If f/w is AMT enabled, this
5311 * would have already happened in close and is redundant.
5313 e1000e_release_hw_control(adapter
);
5315 pci_disable_device(pdev
);
5320 static void e1000_power_off(struct pci_dev
*pdev
, bool sleep
, bool wake
)
5322 if (sleep
&& wake
) {
5323 pci_prepare_to_sleep(pdev
);
5327 pci_wake_from_d3(pdev
, wake
);
5328 pci_set_power_state(pdev
, PCI_D3hot
);
5331 static void e1000_complete_shutdown(struct pci_dev
*pdev
, bool sleep
,
5334 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5335 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5338 * The pci-e switch on some quad port adapters will report a
5339 * correctable error when the MAC transitions from D0 to D3. To
5340 * prevent this we need to mask off the correctable errors on the
5341 * downstream port of the pci-e switch.
5343 if (adapter
->flags
& FLAG_IS_QUAD_PORT
) {
5344 struct pci_dev
*us_dev
= pdev
->bus
->self
;
5345 int pos
= pci_find_capability(us_dev
, PCI_CAP_ID_EXP
);
5348 pci_read_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, &devctl
);
5349 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
,
5350 (devctl
& ~PCI_EXP_DEVCTL_CERE
));
5352 e1000_power_off(pdev
, sleep
, wake
);
5354 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, devctl
);
5356 e1000_power_off(pdev
, sleep
, wake
);
5360 #ifdef CONFIG_PCIEASPM
5361 static void __e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5363 pci_disable_link_state(pdev
, state
);
5366 static void __e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5372 * Both device and parent should have the same ASPM setting.
5373 * Disable ASPM in downstream component first and then upstream.
5375 pos
= pci_pcie_cap(pdev
);
5376 pci_read_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, ®16
);
5378 pci_write_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, reg16
);
5380 if (!pdev
->bus
->self
)
5383 pos
= pci_pcie_cap(pdev
->bus
->self
);
5384 pci_read_config_word(pdev
->bus
->self
, pos
+ PCI_EXP_LNKCTL
, ®16
);
5386 pci_write_config_word(pdev
->bus
->self
, pos
+ PCI_EXP_LNKCTL
, reg16
);
5389 static void e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5391 dev_info(&pdev
->dev
, "Disabling ASPM %s %s\n",
5392 (state
& PCIE_LINK_STATE_L0S
) ? "L0s" : "",
5393 (state
& PCIE_LINK_STATE_L1
) ? "L1" : "");
5395 __e1000e_disable_aspm(pdev
, state
);
5399 static bool e1000e_pm_ready(struct e1000_adapter
*adapter
)
5401 return !!adapter
->tx_ring
->buffer_info
;
5404 static int __e1000_resume(struct pci_dev
*pdev
)
5406 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5407 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5408 struct e1000_hw
*hw
= &adapter
->hw
;
5409 u16 aspm_disable_flag
= 0;
5412 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
5413 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
5414 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5415 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
5416 if (aspm_disable_flag
)
5417 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
5419 pci_set_power_state(pdev
, PCI_D0
);
5420 pci_restore_state(pdev
);
5421 pci_save_state(pdev
);
5423 e1000e_set_interrupt_capability(adapter
);
5424 if (netif_running(netdev
)) {
5425 err
= e1000_request_irq(adapter
);
5430 e1000e_power_up_phy(adapter
);
5432 /* report the system wakeup cause from S3/S4 */
5433 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
5436 e1e_rphy(&adapter
->hw
, BM_WUS
, &phy_data
);
5438 e_info("PHY Wakeup cause - %s\n",
5439 phy_data
& E1000_WUS_EX
? "Unicast Packet" :
5440 phy_data
& E1000_WUS_MC
? "Multicast Packet" :
5441 phy_data
& E1000_WUS_BC
? "Broadcast Packet" :
5442 phy_data
& E1000_WUS_MAG
? "Magic Packet" :
5443 phy_data
& E1000_WUS_LNKC
? "Link Status "
5444 " Change" : "other");
5446 e1e_wphy(&adapter
->hw
, BM_WUS
, ~0);
5448 u32 wus
= er32(WUS
);
5450 e_info("MAC Wakeup cause - %s\n",
5451 wus
& E1000_WUS_EX
? "Unicast Packet" :
5452 wus
& E1000_WUS_MC
? "Multicast Packet" :
5453 wus
& E1000_WUS_BC
? "Broadcast Packet" :
5454 wus
& E1000_WUS_MAG
? "Magic Packet" :
5455 wus
& E1000_WUS_LNKC
? "Link Status Change" :
5461 e1000e_reset(adapter
);
5463 e1000_init_manageability_pt(adapter
);
5465 if (netif_running(netdev
))
5468 netif_device_attach(netdev
);
5471 * If the controller has AMT, do not set DRV_LOAD until the interface
5472 * is up. For all other cases, let the f/w know that the h/w is now
5473 * under the control of the driver.
5475 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5476 e1000e_get_hw_control(adapter
);
5481 #ifdef CONFIG_PM_SLEEP
5482 static int e1000_suspend(struct device
*dev
)
5484 struct pci_dev
*pdev
= to_pci_dev(dev
);
5488 retval
= __e1000_shutdown(pdev
, &wake
, false);
5490 e1000_complete_shutdown(pdev
, true, wake
);
5495 static int e1000_resume(struct device
*dev
)
5497 struct pci_dev
*pdev
= to_pci_dev(dev
);
5498 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5499 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5501 if (e1000e_pm_ready(adapter
))
5502 adapter
->idle_check
= true;
5504 return __e1000_resume(pdev
);
5506 #endif /* CONFIG_PM_SLEEP */
5508 #ifdef CONFIG_PM_RUNTIME
5509 static int e1000_runtime_suspend(struct device
*dev
)
5511 struct pci_dev
*pdev
= to_pci_dev(dev
);
5512 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5513 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5515 if (e1000e_pm_ready(adapter
)) {
5518 __e1000_shutdown(pdev
, &wake
, true);
5524 static int e1000_idle(struct device
*dev
)
5526 struct pci_dev
*pdev
= to_pci_dev(dev
);
5527 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5528 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5530 if (!e1000e_pm_ready(adapter
))
5533 if (adapter
->idle_check
) {
5534 adapter
->idle_check
= false;
5535 if (!e1000e_has_link(adapter
))
5536 pm_schedule_suspend(dev
, MSEC_PER_SEC
);
5542 static int e1000_runtime_resume(struct device
*dev
)
5544 struct pci_dev
*pdev
= to_pci_dev(dev
);
5545 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5546 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5548 if (!e1000e_pm_ready(adapter
))
5551 adapter
->idle_check
= !dev
->power
.runtime_auto
;
5552 return __e1000_resume(pdev
);
5554 #endif /* CONFIG_PM_RUNTIME */
5555 #endif /* CONFIG_PM */
5557 static void e1000_shutdown(struct pci_dev
*pdev
)
5561 __e1000_shutdown(pdev
, &wake
, false);
5563 if (system_state
== SYSTEM_POWER_OFF
)
5564 e1000_complete_shutdown(pdev
, false, wake
);
5567 #ifdef CONFIG_NET_POLL_CONTROLLER
5569 static irqreturn_t
e1000_intr_msix(int irq
, void *data
)
5571 struct net_device
*netdev
= data
;
5572 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5574 if (adapter
->msix_entries
) {
5575 int vector
, msix_irq
;
5578 msix_irq
= adapter
->msix_entries
[vector
].vector
;
5579 disable_irq(msix_irq
);
5580 e1000_intr_msix_rx(msix_irq
, netdev
);
5581 enable_irq(msix_irq
);
5584 msix_irq
= adapter
->msix_entries
[vector
].vector
;
5585 disable_irq(msix_irq
);
5586 e1000_intr_msix_tx(msix_irq
, netdev
);
5587 enable_irq(msix_irq
);
5590 msix_irq
= adapter
->msix_entries
[vector
].vector
;
5591 disable_irq(msix_irq
);
5592 e1000_msix_other(msix_irq
, netdev
);
5593 enable_irq(msix_irq
);
5600 * Polling 'interrupt' - used by things like netconsole to send skbs
5601 * without having to re-enable interrupts. It's not called while
5602 * the interrupt routine is executing.
5604 static void e1000_netpoll(struct net_device
*netdev
)
5606 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5608 switch (adapter
->int_mode
) {
5609 case E1000E_INT_MODE_MSIX
:
5610 e1000_intr_msix(adapter
->pdev
->irq
, netdev
);
5612 case E1000E_INT_MODE_MSI
:
5613 disable_irq(adapter
->pdev
->irq
);
5614 e1000_intr_msi(adapter
->pdev
->irq
, netdev
);
5615 enable_irq(adapter
->pdev
->irq
);
5617 default: /* E1000E_INT_MODE_LEGACY */
5618 disable_irq(adapter
->pdev
->irq
);
5619 e1000_intr(adapter
->pdev
->irq
, netdev
);
5620 enable_irq(adapter
->pdev
->irq
);
5627 * e1000_io_error_detected - called when PCI error is detected
5628 * @pdev: Pointer to PCI device
5629 * @state: The current pci connection state
5631 * This function is called after a PCI bus error affecting
5632 * this device has been detected.
5634 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
5635 pci_channel_state_t state
)
5637 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5638 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5640 netif_device_detach(netdev
);
5642 if (state
== pci_channel_io_perm_failure
)
5643 return PCI_ERS_RESULT_DISCONNECT
;
5645 if (netif_running(netdev
))
5646 e1000e_down(adapter
);
5647 pci_disable_device(pdev
);
5649 /* Request a slot slot reset. */
5650 return PCI_ERS_RESULT_NEED_RESET
;
5654 * e1000_io_slot_reset - called after the pci bus has been reset.
5655 * @pdev: Pointer to PCI device
5657 * Restart the card from scratch, as if from a cold-boot. Implementation
5658 * resembles the first-half of the e1000_resume routine.
5660 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
5662 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5663 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5664 struct e1000_hw
*hw
= &adapter
->hw
;
5665 u16 aspm_disable_flag
= 0;
5667 pci_ers_result_t result
;
5669 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
5670 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
5671 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5672 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
5673 if (aspm_disable_flag
)
5674 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
5676 err
= pci_enable_device_mem(pdev
);
5679 "Cannot re-enable PCI device after reset.\n");
5680 result
= PCI_ERS_RESULT_DISCONNECT
;
5682 pci_set_master(pdev
);
5683 pdev
->state_saved
= true;
5684 pci_restore_state(pdev
);
5686 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5687 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5689 e1000e_reset(adapter
);
5691 result
= PCI_ERS_RESULT_RECOVERED
;
5694 pci_cleanup_aer_uncorrect_error_status(pdev
);
5700 * e1000_io_resume - called when traffic can start flowing again.
5701 * @pdev: Pointer to PCI device
5703 * This callback is called when the error recovery driver tells us that
5704 * its OK to resume normal operation. Implementation resembles the
5705 * second-half of the e1000_resume routine.
5707 static void e1000_io_resume(struct pci_dev
*pdev
)
5709 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5710 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5712 e1000_init_manageability_pt(adapter
);
5714 if (netif_running(netdev
)) {
5715 if (e1000e_up(adapter
)) {
5717 "can't bring device back up after reset\n");
5722 netif_device_attach(netdev
);
5725 * If the controller has AMT, do not set DRV_LOAD until the interface
5726 * is up. For all other cases, let the f/w know that the h/w is now
5727 * under the control of the driver.
5729 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5730 e1000e_get_hw_control(adapter
);
5734 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
5736 struct e1000_hw
*hw
= &adapter
->hw
;
5737 struct net_device
*netdev
= adapter
->netdev
;
5739 u8 pba_str
[E1000_PBANUM_LENGTH
];
5741 /* print bus type/speed/width info */
5742 e_info("(PCI Express:2.5GT/s:%s) %pM\n",
5744 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
5748 e_info("Intel(R) PRO/%s Network Connection\n",
5749 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
5750 ret_val
= e1000_read_pba_string_generic(hw
, pba_str
,
5751 E1000_PBANUM_LENGTH
);
5753 strncpy((char *)pba_str
, "Unknown", sizeof(pba_str
) - 1);
5754 e_info("MAC: %d, PHY: %d, PBA No: %s\n",
5755 hw
->mac
.type
, hw
->phy
.type
, pba_str
);
5758 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
5760 struct e1000_hw
*hw
= &adapter
->hw
;
5764 if (hw
->mac
.type
!= e1000_82573
)
5767 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
5768 if (!ret_val
&& (!(le16_to_cpu(buf
) & (1 << 0)))) {
5769 /* Deep Smart Power Down (DSPD) */
5770 dev_warn(&adapter
->pdev
->dev
,
5771 "Warning: detected DSPD enabled in EEPROM\n");
5775 static const struct net_device_ops e1000e_netdev_ops
= {
5776 .ndo_open
= e1000_open
,
5777 .ndo_stop
= e1000_close
,
5778 .ndo_start_xmit
= e1000_xmit_frame
,
5779 .ndo_get_stats64
= e1000e_get_stats64
,
5780 .ndo_set_multicast_list
= e1000_set_multi
,
5781 .ndo_set_mac_address
= e1000_set_mac
,
5782 .ndo_change_mtu
= e1000_change_mtu
,
5783 .ndo_do_ioctl
= e1000_ioctl
,
5784 .ndo_tx_timeout
= e1000_tx_timeout
,
5785 .ndo_validate_addr
= eth_validate_addr
,
5787 .ndo_vlan_rx_add_vid
= e1000_vlan_rx_add_vid
,
5788 .ndo_vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
,
5789 #ifdef CONFIG_NET_POLL_CONTROLLER
5790 .ndo_poll_controller
= e1000_netpoll
,
5795 * e1000_probe - Device Initialization Routine
5796 * @pdev: PCI device information struct
5797 * @ent: entry in e1000_pci_tbl
5799 * Returns 0 on success, negative on failure
5801 * e1000_probe initializes an adapter identified by a pci_dev structure.
5802 * The OS initialization, configuring of the adapter private structure,
5803 * and a hardware reset occur.
5805 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
5806 const struct pci_device_id
*ent
)
5808 struct net_device
*netdev
;
5809 struct e1000_adapter
*adapter
;
5810 struct e1000_hw
*hw
;
5811 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
5812 resource_size_t mmio_start
, mmio_len
;
5813 resource_size_t flash_start
, flash_len
;
5815 static int cards_found
;
5816 u16 aspm_disable_flag
= 0;
5817 int i
, err
, pci_using_dac
;
5818 u16 eeprom_data
= 0;
5819 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
5821 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
5822 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
5823 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5824 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
5825 if (aspm_disable_flag
)
5826 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
5828 err
= pci_enable_device_mem(pdev
);
5833 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(64));
5835 err
= dma_set_coherent_mask(&pdev
->dev
, DMA_BIT_MASK(64));
5839 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(32));
5841 err
= dma_set_coherent_mask(&pdev
->dev
,
5844 dev_err(&pdev
->dev
, "No usable DMA "
5845 "configuration, aborting\n");
5851 err
= pci_request_selected_regions_exclusive(pdev
,
5852 pci_select_bars(pdev
, IORESOURCE_MEM
),
5853 e1000e_driver_name
);
5857 /* AER (Advanced Error Reporting) hooks */
5858 pci_enable_pcie_error_reporting(pdev
);
5860 pci_set_master(pdev
);
5861 /* PCI config space info */
5862 err
= pci_save_state(pdev
);
5864 goto err_alloc_etherdev
;
5867 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
5869 goto err_alloc_etherdev
;
5871 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
5873 netdev
->irq
= pdev
->irq
;
5875 pci_set_drvdata(pdev
, netdev
);
5876 adapter
= netdev_priv(netdev
);
5878 adapter
->netdev
= netdev
;
5879 adapter
->pdev
= pdev
;
5881 adapter
->pba
= ei
->pba
;
5882 adapter
->flags
= ei
->flags
;
5883 adapter
->flags2
= ei
->flags2
;
5884 adapter
->hw
.adapter
= adapter
;
5885 adapter
->hw
.mac
.type
= ei
->mac
;
5886 adapter
->max_hw_frame_size
= ei
->max_hw_frame_size
;
5887 adapter
->msg_enable
= (1 << NETIF_MSG_DRV
| NETIF_MSG_PROBE
) - 1;
5889 mmio_start
= pci_resource_start(pdev
, 0);
5890 mmio_len
= pci_resource_len(pdev
, 0);
5893 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
5894 if (!adapter
->hw
.hw_addr
)
5897 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
5898 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
5899 flash_start
= pci_resource_start(pdev
, 1);
5900 flash_len
= pci_resource_len(pdev
, 1);
5901 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
5902 if (!adapter
->hw
.flash_address
)
5906 /* construct the net_device struct */
5907 netdev
->netdev_ops
= &e1000e_netdev_ops
;
5908 e1000e_set_ethtool_ops(netdev
);
5909 netdev
->watchdog_timeo
= 5 * HZ
;
5910 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
5911 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
5913 netdev
->mem_start
= mmio_start
;
5914 netdev
->mem_end
= mmio_start
+ mmio_len
;
5916 adapter
->bd_number
= cards_found
++;
5918 e1000e_check_options(adapter
);
5920 /* setup adapter struct */
5921 err
= e1000_sw_init(adapter
);
5925 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
5926 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
5927 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
5929 err
= ei
->get_variants(adapter
);
5933 if ((adapter
->flags
& FLAG_IS_ICH
) &&
5934 (adapter
->flags
& FLAG_READ_ONLY_NVM
))
5935 e1000e_write_protect_nvm_ich8lan(&adapter
->hw
);
5937 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
5939 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
5941 /* Copper options */
5942 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
5943 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
5944 adapter
->hw
.phy
.disable_polarity_correction
= 0;
5945 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
5948 if (e1000_check_reset_block(&adapter
->hw
))
5949 e_info("PHY reset is blocked due to SOL/IDER session.\n");
5951 netdev
->features
= NETIF_F_SG
|
5953 NETIF_F_HW_VLAN_TX
|
5956 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
5957 netdev
->features
|= NETIF_F_HW_VLAN_FILTER
;
5959 netdev
->features
|= NETIF_F_TSO
;
5960 netdev
->features
|= NETIF_F_TSO6
;
5962 netdev
->vlan_features
|= NETIF_F_TSO
;
5963 netdev
->vlan_features
|= NETIF_F_TSO6
;
5964 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
5965 netdev
->vlan_features
|= NETIF_F_SG
;
5967 if (pci_using_dac
) {
5968 netdev
->features
|= NETIF_F_HIGHDMA
;
5969 netdev
->vlan_features
|= NETIF_F_HIGHDMA
;
5972 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
5973 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
5976 * before reading the NVM, reset the controller to
5977 * put the device in a known good starting state
5979 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
5982 * systems with ASPM and others may see the checksum fail on the first
5983 * attempt. Let's give it a few tries
5986 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
5989 e_err("The NVM Checksum Is Not Valid\n");
5995 e1000_eeprom_checks(adapter
);
5997 /* copy the MAC address */
5998 if (e1000e_read_mac_addr(&adapter
->hw
))
5999 e_err("NVM Read Error while reading MAC address\n");
6001 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
6002 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
6004 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
6005 e_err("Invalid MAC Address: %pM\n", netdev
->perm_addr
);
6010 init_timer(&adapter
->watchdog_timer
);
6011 adapter
->watchdog_timer
.function
= e1000_watchdog
;
6012 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
6014 init_timer(&adapter
->phy_info_timer
);
6015 adapter
->phy_info_timer
.function
= e1000_update_phy_info
;
6016 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
6018 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
6019 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
6020 INIT_WORK(&adapter
->downshift_task
, e1000e_downshift_workaround
);
6021 INIT_WORK(&adapter
->update_phy_task
, e1000e_update_phy_task
);
6022 INIT_WORK(&adapter
->print_hang_task
, e1000_print_hw_hang
);
6023 INIT_WORK(&adapter
->led_blink_task
, e1000e_led_blink_task
);
6025 /* Initialize link parameters. User can change them with ethtool */
6026 adapter
->hw
.mac
.autoneg
= 1;
6027 adapter
->fc_autoneg
= 1;
6028 adapter
->hw
.fc
.requested_mode
= e1000_fc_default
;
6029 adapter
->hw
.fc
.current_mode
= e1000_fc_default
;
6030 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
6032 /* ring size defaults */
6033 adapter
->rx_ring
->count
= 256;
6034 adapter
->tx_ring
->count
= 256;
6037 * Initial Wake on LAN setting - If APM wake is enabled in
6038 * the EEPROM, enable the ACPI Magic Packet filter
6040 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
6041 /* APME bit in EEPROM is mapped to WUC.APME */
6042 eeprom_data
= er32(WUC
);
6043 eeprom_apme_mask
= E1000_WUC_APME
;
6044 if ((hw
->mac
.type
> e1000_ich10lan
) &&
6045 (eeprom_data
& E1000_WUC_PHY_WAKE
))
6046 adapter
->flags2
|= FLAG2_HAS_PHY_WAKEUP
;
6047 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
6048 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
6049 (adapter
->hw
.bus
.func
== 1))
6050 e1000_read_nvm(&adapter
->hw
,
6051 NVM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
6053 e1000_read_nvm(&adapter
->hw
,
6054 NVM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
6057 /* fetch WoL from EEPROM */
6058 if (eeprom_data
& eeprom_apme_mask
)
6059 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
6062 * now that we have the eeprom settings, apply the special cases
6063 * where the eeprom may be wrong or the board simply won't support
6064 * wake on lan on a particular port
6066 if (!(adapter
->flags
& FLAG_HAS_WOL
))
6067 adapter
->eeprom_wol
= 0;
6069 /* initialize the wol settings based on the eeprom settings */
6070 adapter
->wol
= adapter
->eeprom_wol
;
6071 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
6073 /* save off EEPROM version number */
6074 e1000_read_nvm(&adapter
->hw
, 5, 1, &adapter
->eeprom_vers
);
6076 /* reset the hardware with the new settings */
6077 e1000e_reset(adapter
);
6080 * If the controller has AMT, do not set DRV_LOAD until the interface
6081 * is up. For all other cases, let the f/w know that the h/w is now
6082 * under the control of the driver.
6084 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6085 e1000e_get_hw_control(adapter
);
6087 strncpy(netdev
->name
, "eth%d", sizeof(netdev
->name
) - 1);
6088 err
= register_netdev(netdev
);
6092 /* carrier off reporting is important to ethtool even BEFORE open */
6093 netif_carrier_off(netdev
);
6095 e1000_print_device_info(adapter
);
6097 if (pci_dev_run_wake(pdev
))
6098 pm_runtime_put_noidle(&pdev
->dev
);
6103 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6104 e1000e_release_hw_control(adapter
);
6106 if (!e1000_check_reset_block(&adapter
->hw
))
6107 e1000_phy_hw_reset(&adapter
->hw
);
6109 kfree(adapter
->tx_ring
);
6110 kfree(adapter
->rx_ring
);
6112 if (adapter
->hw
.flash_address
)
6113 iounmap(adapter
->hw
.flash_address
);
6114 e1000e_reset_interrupt_capability(adapter
);
6116 iounmap(adapter
->hw
.hw_addr
);
6118 free_netdev(netdev
);
6120 pci_release_selected_regions(pdev
,
6121 pci_select_bars(pdev
, IORESOURCE_MEM
));
6124 pci_disable_device(pdev
);
6129 * e1000_remove - Device Removal Routine
6130 * @pdev: PCI device information struct
6132 * e1000_remove is called by the PCI subsystem to alert the driver
6133 * that it should release a PCI device. The could be caused by a
6134 * Hot-Plug event, or because the driver is going to be removed from
6137 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
6139 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6140 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6141 bool down
= test_bit(__E1000_DOWN
, &adapter
->state
);
6144 * The timers may be rescheduled, so explicitly disable them
6145 * from being rescheduled.
6148 set_bit(__E1000_DOWN
, &adapter
->state
);
6149 del_timer_sync(&adapter
->watchdog_timer
);
6150 del_timer_sync(&adapter
->phy_info_timer
);
6152 cancel_work_sync(&adapter
->reset_task
);
6153 cancel_work_sync(&adapter
->watchdog_task
);
6154 cancel_work_sync(&adapter
->downshift_task
);
6155 cancel_work_sync(&adapter
->update_phy_task
);
6156 cancel_work_sync(&adapter
->led_blink_task
);
6157 cancel_work_sync(&adapter
->print_hang_task
);
6159 if (!(netdev
->flags
& IFF_UP
))
6160 e1000_power_down_phy(adapter
);
6162 /* Don't lie to e1000_close() down the road. */
6164 clear_bit(__E1000_DOWN
, &adapter
->state
);
6165 unregister_netdev(netdev
);
6167 if (pci_dev_run_wake(pdev
))
6168 pm_runtime_get_noresume(&pdev
->dev
);
6171 * Release control of h/w to f/w. If f/w is AMT enabled, this
6172 * would have already happened in close and is redundant.
6174 e1000e_release_hw_control(adapter
);
6176 e1000e_reset_interrupt_capability(adapter
);
6177 kfree(adapter
->tx_ring
);
6178 kfree(adapter
->rx_ring
);
6180 iounmap(adapter
->hw
.hw_addr
);
6181 if (adapter
->hw
.flash_address
)
6182 iounmap(adapter
->hw
.flash_address
);
6183 pci_release_selected_regions(pdev
,
6184 pci_select_bars(pdev
, IORESOURCE_MEM
));
6186 free_netdev(netdev
);
6189 pci_disable_pcie_error_reporting(pdev
);
6191 pci_disable_device(pdev
);
6194 /* PCI Error Recovery (ERS) */
6195 static struct pci_error_handlers e1000_err_handler
= {
6196 .error_detected
= e1000_io_error_detected
,
6197 .slot_reset
= e1000_io_slot_reset
,
6198 .resume
= e1000_io_resume
,
6201 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl
) = {
6202 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
6203 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
6204 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
6205 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
), board_82571
},
6206 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
6207 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
6208 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
6209 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
6210 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
6212 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
6213 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
6214 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
6215 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
6217 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
6218 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
6219 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
6221 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574L
), board_82574
},
6222 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574LA
), board_82574
},
6223 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82583V
), board_82583
},
6225 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
6226 board_80003es2lan
},
6227 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
6228 board_80003es2lan
},
6229 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
6230 board_80003es2lan
},
6231 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
6232 board_80003es2lan
},
6234 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
6235 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
6236 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
6237 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
6238 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
6239 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
6240 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
6241 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_82567V_3
), board_ich8lan
},
6243 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
6244 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
6245 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
6246 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
6247 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
6248 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_BM
), board_ich9lan
},
6249 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
6250 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
6251 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
6253 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
6254 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
6255 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
6257 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LM
), board_ich10lan
},
6258 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LF
), board_ich10lan
},
6259 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_V
), board_ich10lan
},
6261 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LM
), board_pchlan
},
6262 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LC
), board_pchlan
},
6263 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DM
), board_pchlan
},
6264 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DC
), board_pchlan
},
6266 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_LM
), board_pch2lan
},
6267 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_V
), board_pch2lan
},
6269 { } /* terminate list */
6271 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
6274 static const struct dev_pm_ops e1000_pm_ops
= {
6275 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend
, e1000_resume
)
6276 SET_RUNTIME_PM_OPS(e1000_runtime_suspend
,
6277 e1000_runtime_resume
, e1000_idle
)
6281 /* PCI Device API Driver */
6282 static struct pci_driver e1000_driver
= {
6283 .name
= e1000e_driver_name
,
6284 .id_table
= e1000_pci_tbl
,
6285 .probe
= e1000_probe
,
6286 .remove
= __devexit_p(e1000_remove
),
6288 .driver
.pm
= &e1000_pm_ops
,
6290 .shutdown
= e1000_shutdown
,
6291 .err_handler
= &e1000_err_handler
6295 * e1000_init_module - Driver Registration Routine
6297 * e1000_init_module is the first routine called when the driver is
6298 * loaded. All it does is register with the PCI subsystem.
6300 static int __init
e1000_init_module(void)
6303 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
6304 e1000e_driver_version
);
6305 pr_info("Copyright(c) 1999 - 2011 Intel Corporation.\n");
6306 ret
= pci_register_driver(&e1000_driver
);
6310 module_init(e1000_init_module
);
6313 * e1000_exit_module - Driver Exit Cleanup Routine
6315 * e1000_exit_module is called just before the driver is removed
6318 static void __exit
e1000_exit_module(void)
6320 pci_unregister_driver(&e1000_driver
);
6322 module_exit(e1000_exit_module
);
6325 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
6326 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
6327 MODULE_LICENSE("GPL");
6328 MODULE_VERSION(DRV_VERSION
);