1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2012 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/interrupt.h>
40 #include <linux/tcp.h>
41 #include <linux/ipv6.h>
42 #include <linux/slab.h>
43 #include <net/checksum.h>
44 #include <net/ip6_checksum.h>
45 #include <linux/mii.h>
46 #include <linux/ethtool.h>
47 #include <linux/if_vlan.h>
48 #include <linux/cpu.h>
49 #include <linux/smp.h>
50 #include <linux/pm_qos.h>
51 #include <linux/pm_runtime.h>
52 #include <linux/aer.h>
53 #include <linux/prefetch.h>
57 #define DRV_EXTRAVERSION "-k"
59 #define DRV_VERSION "2.0.0" DRV_EXTRAVERSION
60 char e1000e_driver_name
[] = "e1000e";
61 const char e1000e_driver_version
[] = DRV_VERSION
;
63 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
64 static int debug
= -1;
65 module_param(debug
, int, 0);
66 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
68 static void e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
);
70 static const struct e1000_info
*e1000_info_tbl
[] = {
71 [board_82571
] = &e1000_82571_info
,
72 [board_82572
] = &e1000_82572_info
,
73 [board_82573
] = &e1000_82573_info
,
74 [board_82574
] = &e1000_82574_info
,
75 [board_82583
] = &e1000_82583_info
,
76 [board_80003es2lan
] = &e1000_es2_info
,
77 [board_ich8lan
] = &e1000_ich8_info
,
78 [board_ich9lan
] = &e1000_ich9_info
,
79 [board_ich10lan
] = &e1000_ich10_info
,
80 [board_pchlan
] = &e1000_pch_info
,
81 [board_pch2lan
] = &e1000_pch2_info
,
82 [board_pch_lpt
] = &e1000_pch_lpt_info
,
85 struct e1000_reg_info
{
90 #define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */
91 #define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */
92 #define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */
93 #define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */
94 #define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */
96 #define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */
97 #define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */
98 #define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */
99 #define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */
100 #define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */
102 static const struct e1000_reg_info e1000_reg_info_tbl
[] = {
104 /* General Registers */
105 {E1000_CTRL
, "CTRL"},
106 {E1000_STATUS
, "STATUS"},
107 {E1000_CTRL_EXT
, "CTRL_EXT"},
109 /* Interrupt Registers */
113 {E1000_RCTL
, "RCTL"},
114 {E1000_RDLEN(0), "RDLEN"},
115 {E1000_RDH(0), "RDH"},
116 {E1000_RDT(0), "RDT"},
117 {E1000_RDTR
, "RDTR"},
118 {E1000_RXDCTL(0), "RXDCTL"},
120 {E1000_RDBAL(0), "RDBAL"},
121 {E1000_RDBAH(0), "RDBAH"},
122 {E1000_RDFH
, "RDFH"},
123 {E1000_RDFT
, "RDFT"},
124 {E1000_RDFHS
, "RDFHS"},
125 {E1000_RDFTS
, "RDFTS"},
126 {E1000_RDFPC
, "RDFPC"},
129 {E1000_TCTL
, "TCTL"},
130 {E1000_TDBAL(0), "TDBAL"},
131 {E1000_TDBAH(0), "TDBAH"},
132 {E1000_TDLEN(0), "TDLEN"},
133 {E1000_TDH(0), "TDH"},
134 {E1000_TDT(0), "TDT"},
135 {E1000_TIDV
, "TIDV"},
136 {E1000_TXDCTL(0), "TXDCTL"},
137 {E1000_TADV
, "TADV"},
138 {E1000_TARC(0), "TARC"},
139 {E1000_TDFH
, "TDFH"},
140 {E1000_TDFT
, "TDFT"},
141 {E1000_TDFHS
, "TDFHS"},
142 {E1000_TDFTS
, "TDFTS"},
143 {E1000_TDFPC
, "TDFPC"},
145 /* List Terminator */
150 * e1000_regdump - register printout routine
152 static void e1000_regdump(struct e1000_hw
*hw
, struct e1000_reg_info
*reginfo
)
158 switch (reginfo
->ofs
) {
159 case E1000_RXDCTL(0):
160 for (n
= 0; n
< 2; n
++)
161 regs
[n
] = __er32(hw
, E1000_RXDCTL(n
));
163 case E1000_TXDCTL(0):
164 for (n
= 0; n
< 2; n
++)
165 regs
[n
] = __er32(hw
, E1000_TXDCTL(n
));
168 for (n
= 0; n
< 2; n
++)
169 regs
[n
] = __er32(hw
, E1000_TARC(n
));
172 pr_info("%-15s %08x\n",
173 reginfo
->name
, __er32(hw
, reginfo
->ofs
));
177 snprintf(rname
, 16, "%s%s", reginfo
->name
, "[0-1]");
178 pr_info("%-15s %08x %08x\n", rname
, regs
[0], regs
[1]);
182 * e1000e_dump - Print registers, Tx-ring and Rx-ring
184 static void e1000e_dump(struct e1000_adapter
*adapter
)
186 struct net_device
*netdev
= adapter
->netdev
;
187 struct e1000_hw
*hw
= &adapter
->hw
;
188 struct e1000_reg_info
*reginfo
;
189 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
190 struct e1000_tx_desc
*tx_desc
;
195 struct e1000_buffer
*buffer_info
;
196 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
197 union e1000_rx_desc_packet_split
*rx_desc_ps
;
198 union e1000_rx_desc_extended
*rx_desc
;
208 if (!netif_msg_hw(adapter
))
211 /* Print netdevice Info */
213 dev_info(&adapter
->pdev
->dev
, "Net device Info\n");
214 pr_info("Device Name state trans_start last_rx\n");
215 pr_info("%-15s %016lX %016lX %016lX\n",
216 netdev
->name
, netdev
->state
, netdev
->trans_start
,
220 /* Print Registers */
221 dev_info(&adapter
->pdev
->dev
, "Register Dump\n");
222 pr_info(" Register Name Value\n");
223 for (reginfo
= (struct e1000_reg_info
*)e1000_reg_info_tbl
;
224 reginfo
->name
; reginfo
++) {
225 e1000_regdump(hw
, reginfo
);
228 /* Print Tx Ring Summary */
229 if (!netdev
|| !netif_running(netdev
))
232 dev_info(&adapter
->pdev
->dev
, "Tx Ring Summary\n");
233 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
234 buffer_info
= &tx_ring
->buffer_info
[tx_ring
->next_to_clean
];
235 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n",
236 0, tx_ring
->next_to_use
, tx_ring
->next_to_clean
,
237 (unsigned long long)buffer_info
->dma
,
239 buffer_info
->next_to_watch
,
240 (unsigned long long)buffer_info
->time_stamp
);
243 if (!netif_msg_tx_done(adapter
))
244 goto rx_ring_summary
;
246 dev_info(&adapter
->pdev
->dev
, "Tx Ring Dump\n");
248 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
250 * Legacy Transmit Descriptor
251 * +--------------------------------------------------------------+
252 * 0 | Buffer Address [63:0] (Reserved on Write Back) |
253 * +--------------------------------------------------------------+
254 * 8 | Special | CSS | Status | CMD | CSO | Length |
255 * +--------------------------------------------------------------+
256 * 63 48 47 36 35 32 31 24 23 16 15 0
258 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
259 * 63 48 47 40 39 32 31 16 15 8 7 0
260 * +----------------------------------------------------------------+
261 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
262 * +----------------------------------------------------------------+
263 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
264 * +----------------------------------------------------------------+
265 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
267 * Extended Data Descriptor (DTYP=0x1)
268 * +----------------------------------------------------------------+
269 * 0 | Buffer Address [63:0] |
270 * +----------------------------------------------------------------+
271 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
272 * +----------------------------------------------------------------+
273 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
275 pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n");
276 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n");
277 pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Data format\n");
278 for (i
= 0; tx_ring
->desc
&& (i
< tx_ring
->count
); i
++) {
279 const char *next_desc
;
280 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
281 buffer_info
= &tx_ring
->buffer_info
[i
];
282 u0
= (struct my_u0
*)tx_desc
;
283 if (i
== tx_ring
->next_to_use
&& i
== tx_ring
->next_to_clean
)
284 next_desc
= " NTC/U";
285 else if (i
== tx_ring
->next_to_use
)
287 else if (i
== tx_ring
->next_to_clean
)
291 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n",
292 (!(le64_to_cpu(u0
->b
) & (1 << 29)) ? 'l' :
293 ((le64_to_cpu(u0
->b
) & (1 << 20)) ? 'd' : 'c')),
295 (unsigned long long)le64_to_cpu(u0
->a
),
296 (unsigned long long)le64_to_cpu(u0
->b
),
297 (unsigned long long)buffer_info
->dma
,
298 buffer_info
->length
, buffer_info
->next_to_watch
,
299 (unsigned long long)buffer_info
->time_stamp
,
300 buffer_info
->skb
, next_desc
);
302 if (netif_msg_pktdata(adapter
) && buffer_info
->dma
!= 0)
303 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_ADDRESS
,
304 16, 1, phys_to_virt(buffer_info
->dma
),
305 buffer_info
->length
, true);
308 /* Print Rx Ring Summary */
310 dev_info(&adapter
->pdev
->dev
, "Rx Ring Summary\n");
311 pr_info("Queue [NTU] [NTC]\n");
312 pr_info(" %5d %5X %5X\n",
313 0, rx_ring
->next_to_use
, rx_ring
->next_to_clean
);
316 if (!netif_msg_rx_status(adapter
))
319 dev_info(&adapter
->pdev
->dev
, "Rx Ring Dump\n");
320 switch (adapter
->rx_ps_pages
) {
324 /* [Extended] Packet Split Receive Descriptor Format
326 * +-----------------------------------------------------+
327 * 0 | Buffer Address 0 [63:0] |
328 * +-----------------------------------------------------+
329 * 8 | Buffer Address 1 [63:0] |
330 * +-----------------------------------------------------+
331 * 16 | Buffer Address 2 [63:0] |
332 * +-----------------------------------------------------+
333 * 24 | Buffer Address 3 [63:0] |
334 * +-----------------------------------------------------+
336 pr_info("R [desc] [buffer 0 63:0 ] [buffer 1 63:0 ] [buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] [bi->skb] <-- Ext Pkt Split format\n");
337 /* [Extended] Receive Descriptor (Write-Back) Format
339 * 63 48 47 32 31 13 12 8 7 4 3 0
340 * +------------------------------------------------------+
341 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
342 * | Checksum | Ident | | Queue | | Type |
343 * +------------------------------------------------------+
344 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
345 * +------------------------------------------------------+
346 * 63 48 47 32 31 20 19 0
348 pr_info("RWB[desc] [ck ipid mrqhsh] [vl l0 ee es] [ l3 l2 l1 hs] [reserved ] ---------------- [bi->skb] <-- Ext Rx Write-Back format\n");
349 for (i
= 0; i
< rx_ring
->count
; i
++) {
350 const char *next_desc
;
351 buffer_info
= &rx_ring
->buffer_info
[i
];
352 rx_desc_ps
= E1000_RX_DESC_PS(*rx_ring
, i
);
353 u1
= (struct my_u1
*)rx_desc_ps
;
355 le32_to_cpu(rx_desc_ps
->wb
.middle
.status_error
);
357 if (i
== rx_ring
->next_to_use
)
359 else if (i
== rx_ring
->next_to_clean
)
364 if (staterr
& E1000_RXD_STAT_DD
) {
365 /* Descriptor Done */
366 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n",
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
),
372 buffer_info
->skb
, next_desc
);
374 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n",
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
,
381 buffer_info
->skb
, next_desc
);
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);
393 /* Extended Receive Descriptor (Read) Format
395 * +-----------------------------------------------------+
396 * 0 | Buffer Address [63:0] |
397 * +-----------------------------------------------------+
399 * +-----------------------------------------------------+
401 pr_info("R [desc] [buf addr 63:0 ] [reserved 63:0 ] [bi->dma ] [bi->skb] <-- Ext (Read) format\n");
402 /* Extended Receive Descriptor (Write-Back) Format
404 * 63 48 47 32 31 24 23 4 3 0
405 * +------------------------------------------------------+
407 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS |
408 * | Packet | IP | | | Type |
409 * | Checksum | Ident | | | |
410 * +------------------------------------------------------+
411 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
412 * +------------------------------------------------------+
413 * 63 48 47 32 31 20 19 0
415 pr_info("RWB[desc] [cs ipid mrq] [vt ln xe xs] [bi->skb] <-- Ext (Write-Back) format\n");
417 for (i
= 0; i
< rx_ring
->count
; i
++) {
418 const char *next_desc
;
420 buffer_info
= &rx_ring
->buffer_info
[i
];
421 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
422 u1
= (struct my_u1
*)rx_desc
;
423 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
425 if (i
== rx_ring
->next_to_use
)
427 else if (i
== rx_ring
->next_to_clean
)
432 if (staterr
& E1000_RXD_STAT_DD
) {
433 /* Descriptor Done */
434 pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n",
436 (unsigned long long)le64_to_cpu(u1
->a
),
437 (unsigned long long)le64_to_cpu(u1
->b
),
438 buffer_info
->skb
, next_desc
);
440 pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n",
442 (unsigned long long)le64_to_cpu(u1
->a
),
443 (unsigned long long)le64_to_cpu(u1
->b
),
444 (unsigned long long)buffer_info
->dma
,
445 buffer_info
->skb
, next_desc
);
447 if (netif_msg_pktdata(adapter
))
448 print_hex_dump(KERN_INFO
, "",
449 DUMP_PREFIX_ADDRESS
, 16,
453 adapter
->rx_buffer_len
,
461 * e1000_desc_unused - calculate if we have unused descriptors
463 static int e1000_desc_unused(struct e1000_ring
*ring
)
465 if (ring
->next_to_clean
> ring
->next_to_use
)
466 return ring
->next_to_clean
- ring
->next_to_use
- 1;
468 return ring
->count
+ ring
->next_to_clean
- ring
->next_to_use
- 1;
472 * e1000_receive_skb - helper function to handle Rx indications
473 * @adapter: board private structure
474 * @status: descriptor status field as written by hardware
475 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
476 * @skb: pointer to sk_buff to be indicated to stack
478 static void e1000_receive_skb(struct e1000_adapter
*adapter
,
479 struct net_device
*netdev
, struct sk_buff
*skb
,
480 u8 status
, __le16 vlan
)
482 u16 tag
= le16_to_cpu(vlan
);
483 skb
->protocol
= eth_type_trans(skb
, netdev
);
485 if (status
& E1000_RXD_STAT_VP
)
486 __vlan_hwaccel_put_tag(skb
, tag
);
488 napi_gro_receive(&adapter
->napi
, skb
);
492 * e1000_rx_checksum - Receive Checksum Offload
493 * @adapter: board private structure
494 * @status_err: receive descriptor status and error fields
495 * @csum: receive descriptor csum field
496 * @sk_buff: socket buffer with received data
498 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
501 u16 status
= (u16
)status_err
;
502 u8 errors
= (u8
)(status_err
>> 24);
504 skb_checksum_none_assert(skb
);
506 /* Rx checksum disabled */
507 if (!(adapter
->netdev
->features
& NETIF_F_RXCSUM
))
510 /* Ignore Checksum bit is set */
511 if (status
& E1000_RXD_STAT_IXSM
)
514 /* TCP/UDP checksum error bit or IP checksum error bit is set */
515 if (errors
& (E1000_RXD_ERR_TCPE
| E1000_RXD_ERR_IPE
)) {
516 /* let the stack verify checksum errors */
517 adapter
->hw_csum_err
++;
521 /* TCP/UDP Checksum has not been calculated */
522 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
525 /* It must be a TCP or UDP packet with a valid checksum */
526 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
527 adapter
->hw_csum_good
++;
530 static void e1000e_update_rdt_wa(struct e1000_ring
*rx_ring
, unsigned int i
)
532 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
533 struct e1000_hw
*hw
= &adapter
->hw
;
534 s32 ret_val
= __ew32_prepare(hw
);
536 writel(i
, rx_ring
->tail
);
538 if (unlikely(!ret_val
&& (i
!= readl(rx_ring
->tail
)))) {
539 u32 rctl
= er32(RCTL
);
540 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
541 e_err("ME firmware caused invalid RDT - resetting\n");
542 schedule_work(&adapter
->reset_task
);
546 static void e1000e_update_tdt_wa(struct e1000_ring
*tx_ring
, unsigned int i
)
548 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
549 struct e1000_hw
*hw
= &adapter
->hw
;
550 s32 ret_val
= __ew32_prepare(hw
);
552 writel(i
, tx_ring
->tail
);
554 if (unlikely(!ret_val
&& (i
!= readl(tx_ring
->tail
)))) {
555 u32 tctl
= er32(TCTL
);
556 ew32(TCTL
, tctl
& ~E1000_TCTL_EN
);
557 e_err("ME firmware caused invalid TDT - resetting\n");
558 schedule_work(&adapter
->reset_task
);
563 * e1000_alloc_rx_buffers - Replace used receive buffers
564 * @rx_ring: Rx descriptor ring
566 static void e1000_alloc_rx_buffers(struct e1000_ring
*rx_ring
,
567 int cleaned_count
, gfp_t gfp
)
569 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
570 struct net_device
*netdev
= adapter
->netdev
;
571 struct pci_dev
*pdev
= adapter
->pdev
;
572 union e1000_rx_desc_extended
*rx_desc
;
573 struct e1000_buffer
*buffer_info
;
576 unsigned int bufsz
= adapter
->rx_buffer_len
;
578 i
= rx_ring
->next_to_use
;
579 buffer_info
= &rx_ring
->buffer_info
[i
];
581 while (cleaned_count
--) {
582 skb
= buffer_info
->skb
;
588 skb
= __netdev_alloc_skb_ip_align(netdev
, bufsz
, gfp
);
590 /* Better luck next round */
591 adapter
->alloc_rx_buff_failed
++;
595 buffer_info
->skb
= skb
;
597 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
598 adapter
->rx_buffer_len
,
600 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
601 dev_err(&pdev
->dev
, "Rx DMA map failed\n");
602 adapter
->rx_dma_failed
++;
606 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
607 rx_desc
->read
.buffer_addr
= cpu_to_le64(buffer_info
->dma
);
609 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
611 * Force memory writes to complete before letting h/w
612 * know there are new descriptors to fetch. (Only
613 * applicable for weak-ordered memory model archs,
617 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
618 e1000e_update_rdt_wa(rx_ring
, i
);
620 writel(i
, rx_ring
->tail
);
623 if (i
== rx_ring
->count
)
625 buffer_info
= &rx_ring
->buffer_info
[i
];
628 rx_ring
->next_to_use
= i
;
632 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
633 * @rx_ring: Rx descriptor ring
635 static void e1000_alloc_rx_buffers_ps(struct e1000_ring
*rx_ring
,
636 int cleaned_count
, gfp_t gfp
)
638 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
639 struct net_device
*netdev
= adapter
->netdev
;
640 struct pci_dev
*pdev
= adapter
->pdev
;
641 union e1000_rx_desc_packet_split
*rx_desc
;
642 struct e1000_buffer
*buffer_info
;
643 struct e1000_ps_page
*ps_page
;
647 i
= rx_ring
->next_to_use
;
648 buffer_info
= &rx_ring
->buffer_info
[i
];
650 while (cleaned_count
--) {
651 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
653 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
654 ps_page
= &buffer_info
->ps_pages
[j
];
655 if (j
>= adapter
->rx_ps_pages
) {
656 /* all unused desc entries get hw null ptr */
657 rx_desc
->read
.buffer_addr
[j
+ 1] =
661 if (!ps_page
->page
) {
662 ps_page
->page
= alloc_page(gfp
);
663 if (!ps_page
->page
) {
664 adapter
->alloc_rx_buff_failed
++;
667 ps_page
->dma
= dma_map_page(&pdev
->dev
,
671 if (dma_mapping_error(&pdev
->dev
,
673 dev_err(&adapter
->pdev
->dev
,
674 "Rx DMA page map failed\n");
675 adapter
->rx_dma_failed
++;
680 * Refresh the desc even if buffer_addrs
681 * didn't change because each write-back
684 rx_desc
->read
.buffer_addr
[j
+ 1] =
685 cpu_to_le64(ps_page
->dma
);
688 skb
= __netdev_alloc_skb_ip_align(netdev
,
689 adapter
->rx_ps_bsize0
,
693 adapter
->alloc_rx_buff_failed
++;
697 buffer_info
->skb
= skb
;
698 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
699 adapter
->rx_ps_bsize0
,
701 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
702 dev_err(&pdev
->dev
, "Rx DMA map failed\n");
703 adapter
->rx_dma_failed
++;
705 dev_kfree_skb_any(skb
);
706 buffer_info
->skb
= NULL
;
710 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
712 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
714 * Force memory writes to complete before letting h/w
715 * know there are new descriptors to fetch. (Only
716 * applicable for weak-ordered memory model archs,
720 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
721 e1000e_update_rdt_wa(rx_ring
, i
<< 1);
723 writel(i
<< 1, rx_ring
->tail
);
727 if (i
== rx_ring
->count
)
729 buffer_info
= &rx_ring
->buffer_info
[i
];
733 rx_ring
->next_to_use
= i
;
737 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
738 * @rx_ring: Rx descriptor ring
739 * @cleaned_count: number of buffers to allocate this pass
742 static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring
*rx_ring
,
743 int cleaned_count
, gfp_t gfp
)
745 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
746 struct net_device
*netdev
= adapter
->netdev
;
747 struct pci_dev
*pdev
= adapter
->pdev
;
748 union e1000_rx_desc_extended
*rx_desc
;
749 struct e1000_buffer
*buffer_info
;
752 unsigned int bufsz
= 256 - 16 /* for skb_reserve */;
754 i
= rx_ring
->next_to_use
;
755 buffer_info
= &rx_ring
->buffer_info
[i
];
757 while (cleaned_count
--) {
758 skb
= buffer_info
->skb
;
764 skb
= __netdev_alloc_skb_ip_align(netdev
, bufsz
, gfp
);
765 if (unlikely(!skb
)) {
766 /* Better luck next round */
767 adapter
->alloc_rx_buff_failed
++;
771 buffer_info
->skb
= skb
;
773 /* allocate a new page if necessary */
774 if (!buffer_info
->page
) {
775 buffer_info
->page
= alloc_page(gfp
);
776 if (unlikely(!buffer_info
->page
)) {
777 adapter
->alloc_rx_buff_failed
++;
782 if (!buffer_info
->dma
)
783 buffer_info
->dma
= dma_map_page(&pdev
->dev
,
784 buffer_info
->page
, 0,
788 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
789 rx_desc
->read
.buffer_addr
= cpu_to_le64(buffer_info
->dma
);
791 if (unlikely(++i
== rx_ring
->count
))
793 buffer_info
= &rx_ring
->buffer_info
[i
];
796 if (likely(rx_ring
->next_to_use
!= i
)) {
797 rx_ring
->next_to_use
= i
;
798 if (unlikely(i
-- == 0))
799 i
= (rx_ring
->count
- 1);
801 /* Force memory writes to complete before letting h/w
802 * know there are new descriptors to fetch. (Only
803 * applicable for weak-ordered memory model archs,
806 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
807 e1000e_update_rdt_wa(rx_ring
, i
);
809 writel(i
, rx_ring
->tail
);
813 static inline void e1000_rx_hash(struct net_device
*netdev
, __le32 rss
,
816 if (netdev
->features
& NETIF_F_RXHASH
)
817 skb
->rxhash
= le32_to_cpu(rss
);
821 * e1000_clean_rx_irq - Send received data up the network stack
822 * @rx_ring: Rx descriptor ring
824 * the return value indicates whether actual cleaning was done, there
825 * is no guarantee that everything was cleaned
827 static bool e1000_clean_rx_irq(struct e1000_ring
*rx_ring
, int *work_done
,
830 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
831 struct net_device
*netdev
= adapter
->netdev
;
832 struct pci_dev
*pdev
= adapter
->pdev
;
833 struct e1000_hw
*hw
= &adapter
->hw
;
834 union e1000_rx_desc_extended
*rx_desc
, *next_rxd
;
835 struct e1000_buffer
*buffer_info
, *next_buffer
;
838 int cleaned_count
= 0;
839 bool cleaned
= false;
840 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
842 i
= rx_ring
->next_to_clean
;
843 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
844 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
845 buffer_info
= &rx_ring
->buffer_info
[i
];
847 while (staterr
& E1000_RXD_STAT_DD
) {
850 if (*work_done
>= work_to_do
)
853 rmb(); /* read descriptor and rx_buffer_info after status DD */
855 skb
= buffer_info
->skb
;
856 buffer_info
->skb
= NULL
;
858 prefetch(skb
->data
- NET_IP_ALIGN
);
861 if (i
== rx_ring
->count
)
863 next_rxd
= E1000_RX_DESC_EXT(*rx_ring
, i
);
866 next_buffer
= &rx_ring
->buffer_info
[i
];
870 dma_unmap_single(&pdev
->dev
,
872 adapter
->rx_buffer_len
,
874 buffer_info
->dma
= 0;
876 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
879 * !EOP means multiple descriptors were used to store a single
880 * packet, if that's the case we need to toss it. In fact, we
881 * need to toss every packet with the EOP bit clear and the
882 * next frame that _does_ have the EOP bit set, as it is by
883 * definition only a frame fragment
885 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
)))
886 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
888 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
889 /* All receives must fit into a single buffer */
890 e_dbg("Receive packet consumed multiple buffers\n");
892 buffer_info
->skb
= skb
;
893 if (staterr
& E1000_RXD_STAT_EOP
)
894 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
898 if (unlikely((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
899 !(netdev
->features
& NETIF_F_RXALL
))) {
901 buffer_info
->skb
= skb
;
905 /* adjust length to remove Ethernet CRC */
906 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
907 /* If configured to store CRC, don't subtract FCS,
908 * but keep the FCS bytes out of the total_rx_bytes
911 if (netdev
->features
& NETIF_F_RXFCS
)
917 total_rx_bytes
+= length
;
921 * code added for copybreak, this should improve
922 * performance for small packets with large amounts
923 * of reassembly being done in the stack
925 if (length
< copybreak
) {
926 struct sk_buff
*new_skb
=
927 netdev_alloc_skb_ip_align(netdev
, length
);
929 skb_copy_to_linear_data_offset(new_skb
,
935 /* save the skb in buffer_info as good */
936 buffer_info
->skb
= skb
;
939 /* else just continue with the old one */
941 /* end copybreak code */
942 skb_put(skb
, length
);
944 /* Receive Checksum Offload */
945 e1000_rx_checksum(adapter
, staterr
, skb
);
947 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
949 e1000_receive_skb(adapter
, netdev
, skb
, staterr
,
950 rx_desc
->wb
.upper
.vlan
);
953 rx_desc
->wb
.upper
.status_error
&= cpu_to_le32(~0xFF);
955 /* return some buffers to hardware, one at a time is too slow */
956 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
957 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
962 /* use prefetched values */
964 buffer_info
= next_buffer
;
966 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
968 rx_ring
->next_to_clean
= i
;
970 cleaned_count
= e1000_desc_unused(rx_ring
);
972 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
974 adapter
->total_rx_bytes
+= total_rx_bytes
;
975 adapter
->total_rx_packets
+= total_rx_packets
;
979 static void e1000_put_txbuf(struct e1000_ring
*tx_ring
,
980 struct e1000_buffer
*buffer_info
)
982 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
984 if (buffer_info
->dma
) {
985 if (buffer_info
->mapped_as_page
)
986 dma_unmap_page(&adapter
->pdev
->dev
, buffer_info
->dma
,
987 buffer_info
->length
, DMA_TO_DEVICE
);
989 dma_unmap_single(&adapter
->pdev
->dev
, buffer_info
->dma
,
990 buffer_info
->length
, DMA_TO_DEVICE
);
991 buffer_info
->dma
= 0;
993 if (buffer_info
->skb
) {
994 dev_kfree_skb_any(buffer_info
->skb
);
995 buffer_info
->skb
= NULL
;
997 buffer_info
->time_stamp
= 0;
1000 static void e1000_print_hw_hang(struct work_struct
*work
)
1002 struct e1000_adapter
*adapter
= container_of(work
,
1003 struct e1000_adapter
,
1005 struct net_device
*netdev
= adapter
->netdev
;
1006 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1007 unsigned int i
= tx_ring
->next_to_clean
;
1008 unsigned int eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1009 struct e1000_tx_desc
*eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1010 struct e1000_hw
*hw
= &adapter
->hw
;
1011 u16 phy_status
, phy_1000t_status
, phy_ext_status
;
1014 if (test_bit(__E1000_DOWN
, &adapter
->state
))
1017 if (!adapter
->tx_hang_recheck
&&
1018 (adapter
->flags2
& FLAG2_DMA_BURST
)) {
1020 * May be block on write-back, flush and detect again
1021 * flush pending descriptor writebacks to memory
1023 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
1024 /* execute the writes immediately */
1027 * Due to rare timing issues, write to TIDV again to ensure
1028 * the write is successful
1030 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
1031 /* execute the writes immediately */
1033 adapter
->tx_hang_recheck
= true;
1036 /* Real hang detected */
1037 adapter
->tx_hang_recheck
= false;
1038 netif_stop_queue(netdev
);
1040 e1e_rphy(hw
, PHY_STATUS
, &phy_status
);
1041 e1e_rphy(hw
, PHY_1000T_STATUS
, &phy_1000t_status
);
1042 e1e_rphy(hw
, PHY_EXT_STATUS
, &phy_ext_status
);
1044 pci_read_config_word(adapter
->pdev
, PCI_STATUS
, &pci_status
);
1046 /* detected Hardware unit hang */
1047 e_err("Detected Hardware Unit Hang:\n"
1050 " next_to_use <%x>\n"
1051 " next_to_clean <%x>\n"
1052 "buffer_info[next_to_clean]:\n"
1053 " time_stamp <%lx>\n"
1054 " next_to_watch <%x>\n"
1056 " next_to_watch.status <%x>\n"
1059 "PHY 1000BASE-T Status <%x>\n"
1060 "PHY Extended Status <%x>\n"
1061 "PCI Status <%x>\n",
1062 readl(tx_ring
->head
),
1063 readl(tx_ring
->tail
),
1064 tx_ring
->next_to_use
,
1065 tx_ring
->next_to_clean
,
1066 tx_ring
->buffer_info
[eop
].time_stamp
,
1069 eop_desc
->upper
.fields
.status
,
1076 /* Suggest workaround for known h/w issue */
1077 if ((hw
->mac
.type
== e1000_pchlan
) && (er32(CTRL
) & E1000_CTRL_TFCE
))
1078 e_err("Try turning off Tx pause (flow control) via ethtool\n");
1082 * e1000_clean_tx_irq - Reclaim resources after transmit completes
1083 * @tx_ring: Tx descriptor ring
1085 * the return value indicates whether actual cleaning was done, there
1086 * is no guarantee that everything was cleaned
1088 static bool e1000_clean_tx_irq(struct e1000_ring
*tx_ring
)
1090 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
1091 struct net_device
*netdev
= adapter
->netdev
;
1092 struct e1000_hw
*hw
= &adapter
->hw
;
1093 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
1094 struct e1000_buffer
*buffer_info
;
1095 unsigned int i
, eop
;
1096 unsigned int count
= 0;
1097 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
1098 unsigned int bytes_compl
= 0, pkts_compl
= 0;
1100 i
= tx_ring
->next_to_clean
;
1101 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1102 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1104 while ((eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
1105 (count
< tx_ring
->count
)) {
1106 bool cleaned
= false;
1107 rmb(); /* read buffer_info after eop_desc */
1108 for (; !cleaned
; count
++) {
1109 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
1110 buffer_info
= &tx_ring
->buffer_info
[i
];
1111 cleaned
= (i
== eop
);
1114 total_tx_packets
+= buffer_info
->segs
;
1115 total_tx_bytes
+= buffer_info
->bytecount
;
1116 if (buffer_info
->skb
) {
1117 bytes_compl
+= buffer_info
->skb
->len
;
1122 e1000_put_txbuf(tx_ring
, buffer_info
);
1123 tx_desc
->upper
.data
= 0;
1126 if (i
== tx_ring
->count
)
1130 if (i
== tx_ring
->next_to_use
)
1132 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1133 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1136 tx_ring
->next_to_clean
= i
;
1138 netdev_completed_queue(netdev
, pkts_compl
, bytes_compl
);
1140 #define TX_WAKE_THRESHOLD 32
1141 if (count
&& netif_carrier_ok(netdev
) &&
1142 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
1143 /* Make sure that anybody stopping the queue after this
1144 * sees the new next_to_clean.
1148 if (netif_queue_stopped(netdev
) &&
1149 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
1150 netif_wake_queue(netdev
);
1151 ++adapter
->restart_queue
;
1155 if (adapter
->detect_tx_hung
) {
1157 * Detect a transmit hang in hardware, this serializes the
1158 * check with the clearing of time_stamp and movement of i
1160 adapter
->detect_tx_hung
= false;
1161 if (tx_ring
->buffer_info
[i
].time_stamp
&&
1162 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
1163 + (adapter
->tx_timeout_factor
* HZ
)) &&
1164 !(er32(STATUS
) & E1000_STATUS_TXOFF
))
1165 schedule_work(&adapter
->print_hang_task
);
1167 adapter
->tx_hang_recheck
= false;
1169 adapter
->total_tx_bytes
+= total_tx_bytes
;
1170 adapter
->total_tx_packets
+= total_tx_packets
;
1171 return count
< tx_ring
->count
;
1175 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
1176 * @rx_ring: Rx descriptor ring
1178 * the return value indicates whether actual cleaning was done, there
1179 * is no guarantee that everything was cleaned
1181 static bool e1000_clean_rx_irq_ps(struct e1000_ring
*rx_ring
, int *work_done
,
1184 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1185 struct e1000_hw
*hw
= &adapter
->hw
;
1186 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
1187 struct net_device
*netdev
= adapter
->netdev
;
1188 struct pci_dev
*pdev
= adapter
->pdev
;
1189 struct e1000_buffer
*buffer_info
, *next_buffer
;
1190 struct e1000_ps_page
*ps_page
;
1191 struct sk_buff
*skb
;
1193 u32 length
, staterr
;
1194 int cleaned_count
= 0;
1195 bool cleaned
= false;
1196 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
1198 i
= rx_ring
->next_to_clean
;
1199 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
1200 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1201 buffer_info
= &rx_ring
->buffer_info
[i
];
1203 while (staterr
& E1000_RXD_STAT_DD
) {
1204 if (*work_done
>= work_to_do
)
1207 skb
= buffer_info
->skb
;
1208 rmb(); /* read descriptor and rx_buffer_info after status DD */
1210 /* in the packet split case this is header only */
1211 prefetch(skb
->data
- NET_IP_ALIGN
);
1214 if (i
== rx_ring
->count
)
1216 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
1219 next_buffer
= &rx_ring
->buffer_info
[i
];
1223 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1224 adapter
->rx_ps_bsize0
, DMA_FROM_DEVICE
);
1225 buffer_info
->dma
= 0;
1227 /* see !EOP comment in other Rx routine */
1228 if (!(staterr
& E1000_RXD_STAT_EOP
))
1229 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
1231 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
1232 e_dbg("Packet Split buffers didn't pick up the full packet\n");
1233 dev_kfree_skb_irq(skb
);
1234 if (staterr
& E1000_RXD_STAT_EOP
)
1235 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1239 if (unlikely((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
1240 !(netdev
->features
& NETIF_F_RXALL
))) {
1241 dev_kfree_skb_irq(skb
);
1245 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
1248 e_dbg("Last part of the packet spanning multiple descriptors\n");
1249 dev_kfree_skb_irq(skb
);
1254 skb_put(skb
, length
);
1258 * this looks ugly, but it seems compiler issues make
1259 * it more efficient than reusing j
1261 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
1264 * page alloc/put takes too long and effects small
1265 * packet throughput, so unsplit small packets and
1266 * save the alloc/put only valid in softirq (napi)
1267 * context to call kmap_*
1269 if (l1
&& (l1
<= copybreak
) &&
1270 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
1273 ps_page
= &buffer_info
->ps_pages
[0];
1276 * there is no documentation about how to call
1277 * kmap_atomic, so we can't hold the mapping
1280 dma_sync_single_for_cpu(&pdev
->dev
,
1284 vaddr
= kmap_atomic(ps_page
->page
);
1285 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
1286 kunmap_atomic(vaddr
);
1287 dma_sync_single_for_device(&pdev
->dev
,
1292 /* remove the CRC */
1293 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
1294 if (!(netdev
->features
& NETIF_F_RXFCS
))
1303 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1304 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
1308 ps_page
= &buffer_info
->ps_pages
[j
];
1309 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1312 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
1313 ps_page
->page
= NULL
;
1315 skb
->data_len
+= length
;
1316 skb
->truesize
+= PAGE_SIZE
;
1319 /* strip the ethernet crc, problem is we're using pages now so
1320 * this whole operation can get a little cpu intensive
1322 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
1323 if (!(netdev
->features
& NETIF_F_RXFCS
))
1324 pskb_trim(skb
, skb
->len
- 4);
1328 total_rx_bytes
+= skb
->len
;
1331 e1000_rx_checksum(adapter
, staterr
, skb
);
1333 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1335 if (rx_desc
->wb
.upper
.header_status
&
1336 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
1337 adapter
->rx_hdr_split
++;
1339 e1000_receive_skb(adapter
, netdev
, skb
,
1340 staterr
, rx_desc
->wb
.middle
.vlan
);
1343 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
1344 buffer_info
->skb
= NULL
;
1346 /* return some buffers to hardware, one at a time is too slow */
1347 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
1348 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1353 /* use prefetched values */
1355 buffer_info
= next_buffer
;
1357 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1359 rx_ring
->next_to_clean
= i
;
1361 cleaned_count
= e1000_desc_unused(rx_ring
);
1363 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1365 adapter
->total_rx_bytes
+= total_rx_bytes
;
1366 adapter
->total_rx_packets
+= total_rx_packets
;
1371 * e1000_consume_page - helper function
1373 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
1378 skb
->data_len
+= length
;
1379 skb
->truesize
+= PAGE_SIZE
;
1383 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1384 * @adapter: board private structure
1386 * the return value indicates whether actual cleaning was done, there
1387 * is no guarantee that everything was cleaned
1389 static bool e1000_clean_jumbo_rx_irq(struct e1000_ring
*rx_ring
, int *work_done
,
1392 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1393 struct net_device
*netdev
= adapter
->netdev
;
1394 struct pci_dev
*pdev
= adapter
->pdev
;
1395 union e1000_rx_desc_extended
*rx_desc
, *next_rxd
;
1396 struct e1000_buffer
*buffer_info
, *next_buffer
;
1397 u32 length
, staterr
;
1399 int cleaned_count
= 0;
1400 bool cleaned
= false;
1401 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
1403 i
= rx_ring
->next_to_clean
;
1404 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
1405 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1406 buffer_info
= &rx_ring
->buffer_info
[i
];
1408 while (staterr
& E1000_RXD_STAT_DD
) {
1409 struct sk_buff
*skb
;
1411 if (*work_done
>= work_to_do
)
1414 rmb(); /* read descriptor and rx_buffer_info after status DD */
1416 skb
= buffer_info
->skb
;
1417 buffer_info
->skb
= NULL
;
1420 if (i
== rx_ring
->count
)
1422 next_rxd
= E1000_RX_DESC_EXT(*rx_ring
, i
);
1425 next_buffer
= &rx_ring
->buffer_info
[i
];
1429 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
, PAGE_SIZE
,
1431 buffer_info
->dma
= 0;
1433 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
1435 /* errors is only valid for DD + EOP descriptors */
1436 if (unlikely((staterr
& E1000_RXD_STAT_EOP
) &&
1437 ((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
1438 !(netdev
->features
& NETIF_F_RXALL
)))) {
1439 /* recycle both page and skb */
1440 buffer_info
->skb
= skb
;
1441 /* an error means any chain goes out the window too */
1442 if (rx_ring
->rx_skb_top
)
1443 dev_kfree_skb_irq(rx_ring
->rx_skb_top
);
1444 rx_ring
->rx_skb_top
= NULL
;
1448 #define rxtop (rx_ring->rx_skb_top)
1449 if (!(staterr
& E1000_RXD_STAT_EOP
)) {
1450 /* this descriptor is only the beginning (or middle) */
1452 /* this is the beginning of a chain */
1454 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
1457 /* this is the middle of a chain */
1458 skb_fill_page_desc(rxtop
,
1459 skb_shinfo(rxtop
)->nr_frags
,
1460 buffer_info
->page
, 0, length
);
1461 /* re-use the skb, only consumed the page */
1462 buffer_info
->skb
= skb
;
1464 e1000_consume_page(buffer_info
, rxtop
, length
);
1468 /* end of the chain */
1469 skb_fill_page_desc(rxtop
,
1470 skb_shinfo(rxtop
)->nr_frags
,
1471 buffer_info
->page
, 0, length
);
1472 /* re-use the current skb, we only consumed the
1474 buffer_info
->skb
= skb
;
1477 e1000_consume_page(buffer_info
, skb
, length
);
1479 /* no chain, got EOP, this buf is the packet
1480 * copybreak to save the put_page/alloc_page */
1481 if (length
<= copybreak
&&
1482 skb_tailroom(skb
) >= length
) {
1484 vaddr
= kmap_atomic(buffer_info
->page
);
1485 memcpy(skb_tail_pointer(skb
), vaddr
,
1487 kunmap_atomic(vaddr
);
1488 /* re-use the page, so don't erase
1489 * buffer_info->page */
1490 skb_put(skb
, length
);
1492 skb_fill_page_desc(skb
, 0,
1493 buffer_info
->page
, 0,
1495 e1000_consume_page(buffer_info
, skb
,
1501 /* Receive Checksum Offload */
1502 e1000_rx_checksum(adapter
, staterr
, skb
);
1504 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1506 /* probably a little skewed due to removing CRC */
1507 total_rx_bytes
+= skb
->len
;
1510 /* eth type trans needs skb->data to point to something */
1511 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1512 e_err("pskb_may_pull failed.\n");
1513 dev_kfree_skb_irq(skb
);
1517 e1000_receive_skb(adapter
, netdev
, skb
, staterr
,
1518 rx_desc
->wb
.upper
.vlan
);
1521 rx_desc
->wb
.upper
.status_error
&= cpu_to_le32(~0xFF);
1523 /* return some buffers to hardware, one at a time is too slow */
1524 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1525 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1530 /* use prefetched values */
1532 buffer_info
= next_buffer
;
1534 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1536 rx_ring
->next_to_clean
= i
;
1538 cleaned_count
= e1000_desc_unused(rx_ring
);
1540 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1542 adapter
->total_rx_bytes
+= total_rx_bytes
;
1543 adapter
->total_rx_packets
+= total_rx_packets
;
1548 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1549 * @rx_ring: Rx descriptor ring
1551 static void e1000_clean_rx_ring(struct e1000_ring
*rx_ring
)
1553 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1554 struct e1000_buffer
*buffer_info
;
1555 struct e1000_ps_page
*ps_page
;
1556 struct pci_dev
*pdev
= adapter
->pdev
;
1559 /* Free all the Rx ring sk_buffs */
1560 for (i
= 0; i
< rx_ring
->count
; i
++) {
1561 buffer_info
= &rx_ring
->buffer_info
[i
];
1562 if (buffer_info
->dma
) {
1563 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1564 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1565 adapter
->rx_buffer_len
,
1567 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1568 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
,
1571 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1572 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1573 adapter
->rx_ps_bsize0
,
1575 buffer_info
->dma
= 0;
1578 if (buffer_info
->page
) {
1579 put_page(buffer_info
->page
);
1580 buffer_info
->page
= NULL
;
1583 if (buffer_info
->skb
) {
1584 dev_kfree_skb(buffer_info
->skb
);
1585 buffer_info
->skb
= NULL
;
1588 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1589 ps_page
= &buffer_info
->ps_pages
[j
];
1592 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1595 put_page(ps_page
->page
);
1596 ps_page
->page
= NULL
;
1600 /* there also may be some cached data from a chained receive */
1601 if (rx_ring
->rx_skb_top
) {
1602 dev_kfree_skb(rx_ring
->rx_skb_top
);
1603 rx_ring
->rx_skb_top
= NULL
;
1606 /* Zero out the descriptor ring */
1607 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1609 rx_ring
->next_to_clean
= 0;
1610 rx_ring
->next_to_use
= 0;
1611 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1613 writel(0, rx_ring
->head
);
1614 if (rx_ring
->adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
1615 e1000e_update_rdt_wa(rx_ring
, 0);
1617 writel(0, rx_ring
->tail
);
1620 static void e1000e_downshift_workaround(struct work_struct
*work
)
1622 struct e1000_adapter
*adapter
= container_of(work
,
1623 struct e1000_adapter
, downshift_task
);
1625 if (test_bit(__E1000_DOWN
, &adapter
->state
))
1628 e1000e_gig_downshift_workaround_ich8lan(&adapter
->hw
);
1632 * e1000_intr_msi - Interrupt Handler
1633 * @irq: interrupt number
1634 * @data: pointer to a network interface device structure
1636 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
1638 struct net_device
*netdev
= data
;
1639 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1640 struct e1000_hw
*hw
= &adapter
->hw
;
1641 u32 icr
= er32(ICR
);
1644 * read ICR disables interrupts using IAM
1647 if (icr
& E1000_ICR_LSC
) {
1648 hw
->mac
.get_link_status
= true;
1650 * ICH8 workaround-- Call gig speed drop workaround on cable
1651 * disconnect (LSC) before accessing any PHY registers
1653 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1654 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1655 schedule_work(&adapter
->downshift_task
);
1658 * 80003ES2LAN workaround-- For packet buffer work-around on
1659 * link down event; disable receives here in the ISR and reset
1660 * adapter in watchdog
1662 if (netif_carrier_ok(netdev
) &&
1663 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1664 /* disable receives */
1665 u32 rctl
= er32(RCTL
);
1666 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1667 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1669 /* guard against interrupt when we're going down */
1670 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1671 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1674 if (napi_schedule_prep(&adapter
->napi
)) {
1675 adapter
->total_tx_bytes
= 0;
1676 adapter
->total_tx_packets
= 0;
1677 adapter
->total_rx_bytes
= 0;
1678 adapter
->total_rx_packets
= 0;
1679 __napi_schedule(&adapter
->napi
);
1686 * e1000_intr - Interrupt Handler
1687 * @irq: interrupt number
1688 * @data: pointer to a network interface device structure
1690 static irqreturn_t
e1000_intr(int irq
, void *data
)
1692 struct net_device
*netdev
= data
;
1693 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1694 struct e1000_hw
*hw
= &adapter
->hw
;
1695 u32 rctl
, icr
= er32(ICR
);
1697 if (!icr
|| test_bit(__E1000_DOWN
, &adapter
->state
))
1698 return IRQ_NONE
; /* Not our interrupt */
1701 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1702 * not set, then the adapter didn't send an interrupt
1704 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1708 * Interrupt Auto-Mask...upon reading ICR,
1709 * interrupts are masked. No need for the
1713 if (icr
& E1000_ICR_LSC
) {
1714 hw
->mac
.get_link_status
= true;
1716 * ICH8 workaround-- Call gig speed drop workaround on cable
1717 * disconnect (LSC) before accessing any PHY registers
1719 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1720 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1721 schedule_work(&adapter
->downshift_task
);
1724 * 80003ES2LAN workaround--
1725 * For packet buffer work-around on link down event;
1726 * disable receives here in the ISR and
1727 * reset adapter in watchdog
1729 if (netif_carrier_ok(netdev
) &&
1730 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1731 /* disable receives */
1733 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1734 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1736 /* guard against interrupt when we're going down */
1737 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1738 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1741 if (napi_schedule_prep(&adapter
->napi
)) {
1742 adapter
->total_tx_bytes
= 0;
1743 adapter
->total_tx_packets
= 0;
1744 adapter
->total_rx_bytes
= 0;
1745 adapter
->total_rx_packets
= 0;
1746 __napi_schedule(&adapter
->napi
);
1752 static irqreturn_t
e1000_msix_other(int irq
, void *data
)
1754 struct net_device
*netdev
= data
;
1755 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1756 struct e1000_hw
*hw
= &adapter
->hw
;
1757 u32 icr
= er32(ICR
);
1759 if (!(icr
& E1000_ICR_INT_ASSERTED
)) {
1760 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1761 ew32(IMS
, E1000_IMS_OTHER
);
1765 if (icr
& adapter
->eiac_mask
)
1766 ew32(ICS
, (icr
& adapter
->eiac_mask
));
1768 if (icr
& E1000_ICR_OTHER
) {
1769 if (!(icr
& E1000_ICR_LSC
))
1770 goto no_link_interrupt
;
1771 hw
->mac
.get_link_status
= true;
1772 /* guard against interrupt when we're going down */
1773 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1774 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1778 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1779 ew32(IMS
, E1000_IMS_LSC
| E1000_IMS_OTHER
);
1785 static irqreturn_t
e1000_intr_msix_tx(int irq
, void *data
)
1787 struct net_device
*netdev
= data
;
1788 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1789 struct e1000_hw
*hw
= &adapter
->hw
;
1790 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1793 adapter
->total_tx_bytes
= 0;
1794 adapter
->total_tx_packets
= 0;
1796 if (!e1000_clean_tx_irq(tx_ring
))
1797 /* Ring was not completely cleaned, so fire another interrupt */
1798 ew32(ICS
, tx_ring
->ims_val
);
1803 static irqreturn_t
e1000_intr_msix_rx(int irq
, void *data
)
1805 struct net_device
*netdev
= data
;
1806 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1807 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1809 /* Write the ITR value calculated at the end of the
1810 * previous interrupt.
1812 if (rx_ring
->set_itr
) {
1813 writel(1000000000 / (rx_ring
->itr_val
* 256),
1814 rx_ring
->itr_register
);
1815 rx_ring
->set_itr
= 0;
1818 if (napi_schedule_prep(&adapter
->napi
)) {
1819 adapter
->total_rx_bytes
= 0;
1820 adapter
->total_rx_packets
= 0;
1821 __napi_schedule(&adapter
->napi
);
1827 * e1000_configure_msix - Configure MSI-X hardware
1829 * e1000_configure_msix sets up the hardware to properly
1830 * generate MSI-X interrupts.
1832 static void e1000_configure_msix(struct e1000_adapter
*adapter
)
1834 struct e1000_hw
*hw
= &adapter
->hw
;
1835 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1836 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1838 u32 ctrl_ext
, ivar
= 0;
1840 adapter
->eiac_mask
= 0;
1842 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1843 if (hw
->mac
.type
== e1000_82574
) {
1844 u32 rfctl
= er32(RFCTL
);
1845 rfctl
|= E1000_RFCTL_ACK_DIS
;
1849 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1850 /* Configure Rx vector */
1851 rx_ring
->ims_val
= E1000_IMS_RXQ0
;
1852 adapter
->eiac_mask
|= rx_ring
->ims_val
;
1853 if (rx_ring
->itr_val
)
1854 writel(1000000000 / (rx_ring
->itr_val
* 256),
1855 rx_ring
->itr_register
);
1857 writel(1, rx_ring
->itr_register
);
1858 ivar
= E1000_IVAR_INT_ALLOC_VALID
| vector
;
1860 /* Configure Tx vector */
1861 tx_ring
->ims_val
= E1000_IMS_TXQ0
;
1863 if (tx_ring
->itr_val
)
1864 writel(1000000000 / (tx_ring
->itr_val
* 256),
1865 tx_ring
->itr_register
);
1867 writel(1, tx_ring
->itr_register
);
1868 adapter
->eiac_mask
|= tx_ring
->ims_val
;
1869 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 8);
1871 /* set vector for Other Causes, e.g. link changes */
1873 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 16);
1874 if (rx_ring
->itr_val
)
1875 writel(1000000000 / (rx_ring
->itr_val
* 256),
1876 hw
->hw_addr
+ E1000_EITR_82574(vector
));
1878 writel(1, hw
->hw_addr
+ E1000_EITR_82574(vector
));
1880 /* Cause Tx interrupts on every write back */
1885 /* enable MSI-X PBA support */
1886 ctrl_ext
= er32(CTRL_EXT
);
1887 ctrl_ext
|= E1000_CTRL_EXT_PBA_CLR
;
1889 /* Auto-Mask Other interrupts upon ICR read */
1890 #define E1000_EIAC_MASK_82574 0x01F00000
1891 ew32(IAM
, ~E1000_EIAC_MASK_82574
| E1000_IMS_OTHER
);
1892 ctrl_ext
|= E1000_CTRL_EXT_EIAME
;
1893 ew32(CTRL_EXT
, ctrl_ext
);
1897 void e1000e_reset_interrupt_capability(struct e1000_adapter
*adapter
)
1899 if (adapter
->msix_entries
) {
1900 pci_disable_msix(adapter
->pdev
);
1901 kfree(adapter
->msix_entries
);
1902 adapter
->msix_entries
= NULL
;
1903 } else if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1904 pci_disable_msi(adapter
->pdev
);
1905 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
1910 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1912 * Attempt to configure interrupts using the best available
1913 * capabilities of the hardware and kernel.
1915 void e1000e_set_interrupt_capability(struct e1000_adapter
*adapter
)
1920 switch (adapter
->int_mode
) {
1921 case E1000E_INT_MODE_MSIX
:
1922 if (adapter
->flags
& FLAG_HAS_MSIX
) {
1923 adapter
->num_vectors
= 3; /* RxQ0, TxQ0 and other */
1924 adapter
->msix_entries
= kcalloc(adapter
->num_vectors
,
1925 sizeof(struct msix_entry
),
1927 if (adapter
->msix_entries
) {
1928 for (i
= 0; i
< adapter
->num_vectors
; i
++)
1929 adapter
->msix_entries
[i
].entry
= i
;
1931 err
= pci_enable_msix(adapter
->pdev
,
1932 adapter
->msix_entries
,
1933 adapter
->num_vectors
);
1937 /* MSI-X failed, so fall through and try MSI */
1938 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n");
1939 e1000e_reset_interrupt_capability(adapter
);
1941 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1943 case E1000E_INT_MODE_MSI
:
1944 if (!pci_enable_msi(adapter
->pdev
)) {
1945 adapter
->flags
|= FLAG_MSI_ENABLED
;
1947 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1948 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n");
1951 case E1000E_INT_MODE_LEGACY
:
1952 /* Don't do anything; this is the system default */
1956 /* store the number of vectors being used */
1957 adapter
->num_vectors
= 1;
1961 * e1000_request_msix - Initialize MSI-X interrupts
1963 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1966 static int e1000_request_msix(struct e1000_adapter
*adapter
)
1968 struct net_device
*netdev
= adapter
->netdev
;
1969 int err
= 0, vector
= 0;
1971 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1972 snprintf(adapter
->rx_ring
->name
,
1973 sizeof(adapter
->rx_ring
->name
) - 1,
1974 "%s-rx-0", netdev
->name
);
1976 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1977 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1978 e1000_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
1982 adapter
->rx_ring
->itr_register
= adapter
->hw
.hw_addr
+
1983 E1000_EITR_82574(vector
);
1984 adapter
->rx_ring
->itr_val
= adapter
->itr
;
1987 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1988 snprintf(adapter
->tx_ring
->name
,
1989 sizeof(adapter
->tx_ring
->name
) - 1,
1990 "%s-tx-0", netdev
->name
);
1992 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1993 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1994 e1000_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
1998 adapter
->tx_ring
->itr_register
= adapter
->hw
.hw_addr
+
1999 E1000_EITR_82574(vector
);
2000 adapter
->tx_ring
->itr_val
= adapter
->itr
;
2003 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2004 e1000_msix_other
, 0, netdev
->name
, netdev
);
2008 e1000_configure_msix(adapter
);
2014 * e1000_request_irq - initialize interrupts
2016 * Attempts to configure interrupts using the best available
2017 * capabilities of the hardware and kernel.
2019 static int e1000_request_irq(struct e1000_adapter
*adapter
)
2021 struct net_device
*netdev
= adapter
->netdev
;
2024 if (adapter
->msix_entries
) {
2025 err
= e1000_request_msix(adapter
);
2028 /* fall back to MSI */
2029 e1000e_reset_interrupt_capability(adapter
);
2030 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
2031 e1000e_set_interrupt_capability(adapter
);
2033 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
2034 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi
, 0,
2035 netdev
->name
, netdev
);
2039 /* fall back to legacy interrupt */
2040 e1000e_reset_interrupt_capability(adapter
);
2041 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
2044 err
= request_irq(adapter
->pdev
->irq
, e1000_intr
, IRQF_SHARED
,
2045 netdev
->name
, netdev
);
2047 e_err("Unable to allocate interrupt, Error: %d\n", err
);
2052 static void e1000_free_irq(struct e1000_adapter
*adapter
)
2054 struct net_device
*netdev
= adapter
->netdev
;
2056 if (adapter
->msix_entries
) {
2059 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2062 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2065 /* Other Causes interrupt vector */
2066 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2070 free_irq(adapter
->pdev
->irq
, netdev
);
2074 * e1000_irq_disable - Mask off interrupt generation on the NIC
2076 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
2078 struct e1000_hw
*hw
= &adapter
->hw
;
2081 if (adapter
->msix_entries
)
2082 ew32(EIAC_82574
, 0);
2085 if (adapter
->msix_entries
) {
2087 for (i
= 0; i
< adapter
->num_vectors
; i
++)
2088 synchronize_irq(adapter
->msix_entries
[i
].vector
);
2090 synchronize_irq(adapter
->pdev
->irq
);
2095 * e1000_irq_enable - Enable default interrupt generation settings
2097 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
2099 struct e1000_hw
*hw
= &adapter
->hw
;
2101 if (adapter
->msix_entries
) {
2102 ew32(EIAC_82574
, adapter
->eiac_mask
& E1000_EIAC_MASK_82574
);
2103 ew32(IMS
, adapter
->eiac_mask
| E1000_IMS_OTHER
| E1000_IMS_LSC
);
2105 ew32(IMS
, IMS_ENABLE_MASK
);
2111 * e1000e_get_hw_control - get control of the h/w from f/w
2112 * @adapter: address of board private structure
2114 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2115 * For ASF and Pass Through versions of f/w this means that
2116 * the driver is loaded. For AMT version (only with 82573)
2117 * of the f/w this means that the network i/f is open.
2119 void e1000e_get_hw_control(struct e1000_adapter
*adapter
)
2121 struct e1000_hw
*hw
= &adapter
->hw
;
2125 /* Let firmware know the driver has taken over */
2126 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2128 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
2129 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2130 ctrl_ext
= er32(CTRL_EXT
);
2131 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
2136 * e1000e_release_hw_control - release control of the h/w to f/w
2137 * @adapter: address of board private structure
2139 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2140 * For ASF and Pass Through versions of f/w this means that the
2141 * driver is no longer loaded. For AMT version (only with 82573) i
2142 * of the f/w this means that the network i/f is closed.
2145 void e1000e_release_hw_control(struct e1000_adapter
*adapter
)
2147 struct e1000_hw
*hw
= &adapter
->hw
;
2151 /* Let firmware taken over control of h/w */
2152 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2154 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
2155 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2156 ctrl_ext
= er32(CTRL_EXT
);
2157 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
2162 * @e1000_alloc_ring - allocate memory for a ring structure
2164 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
2165 struct e1000_ring
*ring
)
2167 struct pci_dev
*pdev
= adapter
->pdev
;
2169 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
2178 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
2179 * @tx_ring: Tx descriptor ring
2181 * Return 0 on success, negative on failure
2183 int e1000e_setup_tx_resources(struct e1000_ring
*tx_ring
)
2185 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2186 int err
= -ENOMEM
, size
;
2188 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2189 tx_ring
->buffer_info
= vzalloc(size
);
2190 if (!tx_ring
->buffer_info
)
2193 /* round up to nearest 4K */
2194 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2195 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
2197 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
2201 tx_ring
->next_to_use
= 0;
2202 tx_ring
->next_to_clean
= 0;
2206 vfree(tx_ring
->buffer_info
);
2207 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2212 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
2213 * @rx_ring: Rx descriptor ring
2215 * Returns 0 on success, negative on failure
2217 int e1000e_setup_rx_resources(struct e1000_ring
*rx_ring
)
2219 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
2220 struct e1000_buffer
*buffer_info
;
2221 int i
, size
, desc_len
, err
= -ENOMEM
;
2223 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2224 rx_ring
->buffer_info
= vzalloc(size
);
2225 if (!rx_ring
->buffer_info
)
2228 for (i
= 0; i
< rx_ring
->count
; i
++) {
2229 buffer_info
= &rx_ring
->buffer_info
[i
];
2230 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
2231 sizeof(struct e1000_ps_page
),
2233 if (!buffer_info
->ps_pages
)
2237 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
2239 /* Round up to nearest 4K */
2240 rx_ring
->size
= rx_ring
->count
* desc_len
;
2241 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
2243 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
2247 rx_ring
->next_to_clean
= 0;
2248 rx_ring
->next_to_use
= 0;
2249 rx_ring
->rx_skb_top
= NULL
;
2254 for (i
= 0; i
< rx_ring
->count
; i
++) {
2255 buffer_info
= &rx_ring
->buffer_info
[i
];
2256 kfree(buffer_info
->ps_pages
);
2259 vfree(rx_ring
->buffer_info
);
2260 e_err("Unable to allocate memory for the receive descriptor ring\n");
2265 * e1000_clean_tx_ring - Free Tx Buffers
2266 * @tx_ring: Tx descriptor ring
2268 static void e1000_clean_tx_ring(struct e1000_ring
*tx_ring
)
2270 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2271 struct e1000_buffer
*buffer_info
;
2275 for (i
= 0; i
< tx_ring
->count
; i
++) {
2276 buffer_info
= &tx_ring
->buffer_info
[i
];
2277 e1000_put_txbuf(tx_ring
, buffer_info
);
2280 netdev_reset_queue(adapter
->netdev
);
2281 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2282 memset(tx_ring
->buffer_info
, 0, size
);
2284 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2286 tx_ring
->next_to_use
= 0;
2287 tx_ring
->next_to_clean
= 0;
2289 writel(0, tx_ring
->head
);
2290 if (tx_ring
->adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
2291 e1000e_update_tdt_wa(tx_ring
, 0);
2293 writel(0, tx_ring
->tail
);
2297 * e1000e_free_tx_resources - Free Tx Resources per Queue
2298 * @tx_ring: Tx descriptor ring
2300 * Free all transmit software resources
2302 void e1000e_free_tx_resources(struct e1000_ring
*tx_ring
)
2304 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2305 struct pci_dev
*pdev
= adapter
->pdev
;
2307 e1000_clean_tx_ring(tx_ring
);
2309 vfree(tx_ring
->buffer_info
);
2310 tx_ring
->buffer_info
= NULL
;
2312 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
2314 tx_ring
->desc
= NULL
;
2318 * e1000e_free_rx_resources - Free Rx Resources
2319 * @rx_ring: Rx descriptor ring
2321 * Free all receive software resources
2323 void e1000e_free_rx_resources(struct e1000_ring
*rx_ring
)
2325 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
2326 struct pci_dev
*pdev
= adapter
->pdev
;
2329 e1000_clean_rx_ring(rx_ring
);
2331 for (i
= 0; i
< rx_ring
->count
; i
++)
2332 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
2334 vfree(rx_ring
->buffer_info
);
2335 rx_ring
->buffer_info
= NULL
;
2337 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
2339 rx_ring
->desc
= NULL
;
2343 * e1000_update_itr - update the dynamic ITR value based on statistics
2344 * @adapter: pointer to adapter
2345 * @itr_setting: current adapter->itr
2346 * @packets: the number of packets during this measurement interval
2347 * @bytes: the number of bytes during this measurement interval
2349 * Stores a new ITR value based on packets and byte
2350 * counts during the last interrupt. The advantage of per interrupt
2351 * computation is faster updates and more accurate ITR for the current
2352 * traffic pattern. Constants in this function were computed
2353 * based on theoretical maximum wire speed and thresholds were set based
2354 * on testing data as well as attempting to minimize response time
2355 * while increasing bulk throughput. This functionality is controlled
2356 * by the InterruptThrottleRate module parameter.
2358 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
2359 u16 itr_setting
, int packets
,
2362 unsigned int retval
= itr_setting
;
2367 switch (itr_setting
) {
2368 case lowest_latency
:
2369 /* handle TSO and jumbo frames */
2370 if (bytes
/packets
> 8000)
2371 retval
= bulk_latency
;
2372 else if ((packets
< 5) && (bytes
> 512))
2373 retval
= low_latency
;
2375 case low_latency
: /* 50 usec aka 20000 ints/s */
2376 if (bytes
> 10000) {
2377 /* this if handles the TSO accounting */
2378 if (bytes
/packets
> 8000)
2379 retval
= bulk_latency
;
2380 else if ((packets
< 10) || ((bytes
/packets
) > 1200))
2381 retval
= bulk_latency
;
2382 else if ((packets
> 35))
2383 retval
= lowest_latency
;
2384 } else if (bytes
/packets
> 2000) {
2385 retval
= bulk_latency
;
2386 } else if (packets
<= 2 && bytes
< 512) {
2387 retval
= lowest_latency
;
2390 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2391 if (bytes
> 25000) {
2393 retval
= low_latency
;
2394 } else if (bytes
< 6000) {
2395 retval
= low_latency
;
2403 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2405 struct e1000_hw
*hw
= &adapter
->hw
;
2407 u32 new_itr
= adapter
->itr
;
2409 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2410 if (adapter
->link_speed
!= SPEED_1000
) {
2416 if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
2421 adapter
->tx_itr
= e1000_update_itr(adapter
,
2423 adapter
->total_tx_packets
,
2424 adapter
->total_tx_bytes
);
2425 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2426 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
2427 adapter
->tx_itr
= low_latency
;
2429 adapter
->rx_itr
= e1000_update_itr(adapter
,
2431 adapter
->total_rx_packets
,
2432 adapter
->total_rx_bytes
);
2433 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2434 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2435 adapter
->rx_itr
= low_latency
;
2437 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2439 switch (current_itr
) {
2440 /* counts and packets in update_itr are dependent on these numbers */
2441 case lowest_latency
:
2445 new_itr
= 20000; /* aka hwitr = ~200 */
2455 if (new_itr
!= adapter
->itr
) {
2457 * this attempts to bias the interrupt rate towards Bulk
2458 * by adding intermediate steps when interrupt rate is
2461 new_itr
= new_itr
> adapter
->itr
?
2462 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2464 adapter
->itr
= new_itr
;
2465 adapter
->rx_ring
->itr_val
= new_itr
;
2466 if (adapter
->msix_entries
)
2467 adapter
->rx_ring
->set_itr
= 1;
2470 ew32(ITR
, 1000000000 / (new_itr
* 256));
2477 * e1000_alloc_queues - Allocate memory for all rings
2478 * @adapter: board private structure to initialize
2480 static int __devinit
e1000_alloc_queues(struct e1000_adapter
*adapter
)
2482 int size
= sizeof(struct e1000_ring
);
2484 adapter
->tx_ring
= kzalloc(size
, GFP_KERNEL
);
2485 if (!adapter
->tx_ring
)
2487 adapter
->tx_ring
->count
= adapter
->tx_ring_count
;
2488 adapter
->tx_ring
->adapter
= adapter
;
2490 adapter
->rx_ring
= kzalloc(size
, GFP_KERNEL
);
2491 if (!adapter
->rx_ring
)
2493 adapter
->rx_ring
->count
= adapter
->rx_ring_count
;
2494 adapter
->rx_ring
->adapter
= adapter
;
2498 e_err("Unable to allocate memory for queues\n");
2499 kfree(adapter
->rx_ring
);
2500 kfree(adapter
->tx_ring
);
2505 * e1000e_poll - NAPI Rx polling callback
2506 * @napi: struct associated with this polling callback
2507 * @weight: number of packets driver is allowed to process this poll
2509 static int e1000e_poll(struct napi_struct
*napi
, int weight
)
2511 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
,
2513 struct e1000_hw
*hw
= &adapter
->hw
;
2514 struct net_device
*poll_dev
= adapter
->netdev
;
2515 int tx_cleaned
= 1, work_done
= 0;
2517 adapter
= netdev_priv(poll_dev
);
2519 if (!adapter
->msix_entries
||
2520 (adapter
->rx_ring
->ims_val
& adapter
->tx_ring
->ims_val
))
2521 tx_cleaned
= e1000_clean_tx_irq(adapter
->tx_ring
);
2523 adapter
->clean_rx(adapter
->rx_ring
, &work_done
, weight
);
2528 /* If weight not fully consumed, exit the polling mode */
2529 if (work_done
< weight
) {
2530 if (adapter
->itr_setting
& 3)
2531 e1000_set_itr(adapter
);
2532 napi_complete(napi
);
2533 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
2534 if (adapter
->msix_entries
)
2535 ew32(IMS
, adapter
->rx_ring
->ims_val
);
2537 e1000_irq_enable(adapter
);
2544 static int e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
2546 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2547 struct e1000_hw
*hw
= &adapter
->hw
;
2550 /* don't update vlan cookie if already programmed */
2551 if ((adapter
->hw
.mng_cookie
.status
&
2552 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2553 (vid
== adapter
->mng_vlan_id
))
2556 /* add VID to filter table */
2557 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2558 index
= (vid
>> 5) & 0x7F;
2559 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2560 vfta
|= (1 << (vid
& 0x1F));
2561 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2564 set_bit(vid
, adapter
->active_vlans
);
2569 static int e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
2571 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2572 struct e1000_hw
*hw
= &adapter
->hw
;
2575 if ((adapter
->hw
.mng_cookie
.status
&
2576 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2577 (vid
== adapter
->mng_vlan_id
)) {
2578 /* release control to f/w */
2579 e1000e_release_hw_control(adapter
);
2583 /* remove VID from filter table */
2584 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2585 index
= (vid
>> 5) & 0x7F;
2586 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2587 vfta
&= ~(1 << (vid
& 0x1F));
2588 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2591 clear_bit(vid
, adapter
->active_vlans
);
2597 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
2598 * @adapter: board private structure to initialize
2600 static void e1000e_vlan_filter_disable(struct e1000_adapter
*adapter
)
2602 struct net_device
*netdev
= adapter
->netdev
;
2603 struct e1000_hw
*hw
= &adapter
->hw
;
2606 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2607 /* disable VLAN receive filtering */
2609 rctl
&= ~(E1000_RCTL_VFE
| E1000_RCTL_CFIEN
);
2612 if (adapter
->mng_vlan_id
!= (u16
)E1000_MNG_VLAN_NONE
) {
2613 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
2614 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2620 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
2621 * @adapter: board private structure to initialize
2623 static void e1000e_vlan_filter_enable(struct e1000_adapter
*adapter
)
2625 struct e1000_hw
*hw
= &adapter
->hw
;
2628 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2629 /* enable VLAN receive filtering */
2631 rctl
|= E1000_RCTL_VFE
;
2632 rctl
&= ~E1000_RCTL_CFIEN
;
2638 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping
2639 * @adapter: board private structure to initialize
2641 static void e1000e_vlan_strip_disable(struct e1000_adapter
*adapter
)
2643 struct e1000_hw
*hw
= &adapter
->hw
;
2646 /* disable VLAN tag insert/strip */
2648 ctrl
&= ~E1000_CTRL_VME
;
2653 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
2654 * @adapter: board private structure to initialize
2656 static void e1000e_vlan_strip_enable(struct e1000_adapter
*adapter
)
2658 struct e1000_hw
*hw
= &adapter
->hw
;
2661 /* enable VLAN tag insert/strip */
2663 ctrl
|= E1000_CTRL_VME
;
2667 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
2669 struct net_device
*netdev
= adapter
->netdev
;
2670 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
2671 u16 old_vid
= adapter
->mng_vlan_id
;
2673 if (adapter
->hw
.mng_cookie
.status
&
2674 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
2675 e1000_vlan_rx_add_vid(netdev
, vid
);
2676 adapter
->mng_vlan_id
= vid
;
2679 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) && (vid
!= old_vid
))
2680 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
2683 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
2687 e1000_vlan_rx_add_vid(adapter
->netdev
, 0);
2689 for_each_set_bit(vid
, adapter
->active_vlans
, VLAN_N_VID
)
2690 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
2693 static void e1000_init_manageability_pt(struct e1000_adapter
*adapter
)
2695 struct e1000_hw
*hw
= &adapter
->hw
;
2696 u32 manc
, manc2h
, mdef
, i
, j
;
2698 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
2704 * enable receiving management packets to the host. this will probably
2705 * generate destination unreachable messages from the host OS, but
2706 * the packets will be handled on SMBUS
2708 manc
|= E1000_MANC_EN_MNG2HOST
;
2709 manc2h
= er32(MANC2H
);
2711 switch (hw
->mac
.type
) {
2713 manc2h
|= (E1000_MANC2H_PORT_623
| E1000_MANC2H_PORT_664
);
2718 * Check if IPMI pass-through decision filter already exists;
2721 for (i
= 0, j
= 0; i
< 8; i
++) {
2722 mdef
= er32(MDEF(i
));
2724 /* Ignore filters with anything other than IPMI ports */
2725 if (mdef
& ~(E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2728 /* Enable this decision filter in MANC2H */
2735 if (j
== (E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2738 /* Create new decision filter in an empty filter */
2739 for (i
= 0, j
= 0; i
< 8; i
++)
2740 if (er32(MDEF(i
)) == 0) {
2741 ew32(MDEF(i
), (E1000_MDEF_PORT_623
|
2742 E1000_MDEF_PORT_664
));
2749 e_warn("Unable to create IPMI pass-through filter\n");
2753 ew32(MANC2H
, manc2h
);
2758 * e1000_configure_tx - Configure Transmit Unit after Reset
2759 * @adapter: board private structure
2761 * Configure the Tx unit of the MAC after a reset.
2763 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
2765 struct e1000_hw
*hw
= &adapter
->hw
;
2766 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2770 /* Setup the HW Tx Head and Tail descriptor pointers */
2771 tdba
= tx_ring
->dma
;
2772 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2773 ew32(TDBAL(0), (tdba
& DMA_BIT_MASK(32)));
2774 ew32(TDBAH(0), (tdba
>> 32));
2775 ew32(TDLEN(0), tdlen
);
2778 tx_ring
->head
= adapter
->hw
.hw_addr
+ E1000_TDH(0);
2779 tx_ring
->tail
= adapter
->hw
.hw_addr
+ E1000_TDT(0);
2781 /* Set the Tx Interrupt Delay register */
2782 ew32(TIDV
, adapter
->tx_int_delay
);
2783 /* Tx irq moderation */
2784 ew32(TADV
, adapter
->tx_abs_int_delay
);
2786 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
2787 u32 txdctl
= er32(TXDCTL(0));
2788 txdctl
&= ~(E1000_TXDCTL_PTHRESH
| E1000_TXDCTL_HTHRESH
|
2789 E1000_TXDCTL_WTHRESH
);
2791 * set up some performance related parameters to encourage the
2792 * hardware to use the bus more efficiently in bursts, depends
2793 * on the tx_int_delay to be enabled,
2794 * wthresh = 5 ==> burst write a cacheline (64 bytes) at a time
2795 * hthresh = 1 ==> prefetch when one or more available
2796 * pthresh = 0x1f ==> prefetch if internal cache 31 or less
2797 * BEWARE: this seems to work but should be considered first if
2798 * there are Tx hangs or other Tx related bugs
2800 txdctl
|= E1000_TXDCTL_DMA_BURST_ENABLE
;
2801 ew32(TXDCTL(0), txdctl
);
2803 /* erratum work around: set txdctl the same for both queues */
2804 ew32(TXDCTL(1), er32(TXDCTL(0)));
2806 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
2807 tarc
= er32(TARC(0));
2809 * set the speed mode bit, we'll clear it if we're not at
2810 * gigabit link later
2812 #define SPEED_MODE_BIT (1 << 21)
2813 tarc
|= SPEED_MODE_BIT
;
2814 ew32(TARC(0), tarc
);
2817 /* errata: program both queues to unweighted RR */
2818 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
2819 tarc
= er32(TARC(0));
2821 ew32(TARC(0), tarc
);
2822 tarc
= er32(TARC(1));
2824 ew32(TARC(1), tarc
);
2827 /* Setup Transmit Descriptor Settings for eop descriptor */
2828 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
2830 /* only set IDE if we are delaying interrupts using the timers */
2831 if (adapter
->tx_int_delay
)
2832 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
2834 /* enable Report Status bit */
2835 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
2837 hw
->mac
.ops
.config_collision_dist(hw
);
2841 * e1000_setup_rctl - configure the receive control registers
2842 * @adapter: Board private structure
2844 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2845 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2846 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
2848 struct e1000_hw
*hw
= &adapter
->hw
;
2852 /* Workaround Si errata on PCHx - configure jumbo frame flow */
2853 if (hw
->mac
.type
>= e1000_pch2lan
) {
2856 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
)
2857 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, true);
2859 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, false);
2862 e_dbg("failed to enable jumbo frame workaround mode\n");
2865 /* Program MC offset vector base */
2867 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
2868 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
2869 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
2870 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
2872 /* Do not Store bad packets */
2873 rctl
&= ~E1000_RCTL_SBP
;
2875 /* Enable Long Packet receive */
2876 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
2877 rctl
&= ~E1000_RCTL_LPE
;
2879 rctl
|= E1000_RCTL_LPE
;
2881 /* Some systems expect that the CRC is included in SMBUS traffic. The
2882 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2883 * host memory when this is enabled
2885 if (adapter
->flags2
& FLAG2_CRC_STRIPPING
)
2886 rctl
|= E1000_RCTL_SECRC
;
2888 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
2889 if ((hw
->phy
.type
== e1000_phy_82577
) && (rctl
& E1000_RCTL_LPE
)) {
2892 e1e_rphy(hw
, PHY_REG(770, 26), &phy_data
);
2894 phy_data
|= (1 << 2);
2895 e1e_wphy(hw
, PHY_REG(770, 26), phy_data
);
2897 e1e_rphy(hw
, 22, &phy_data
);
2899 phy_data
|= (1 << 14);
2900 e1e_wphy(hw
, 0x10, 0x2823);
2901 e1e_wphy(hw
, 0x11, 0x0003);
2902 e1e_wphy(hw
, 22, phy_data
);
2905 /* Setup buffer sizes */
2906 rctl
&= ~E1000_RCTL_SZ_4096
;
2907 rctl
|= E1000_RCTL_BSEX
;
2908 switch (adapter
->rx_buffer_len
) {
2911 rctl
|= E1000_RCTL_SZ_2048
;
2912 rctl
&= ~E1000_RCTL_BSEX
;
2915 rctl
|= E1000_RCTL_SZ_4096
;
2918 rctl
|= E1000_RCTL_SZ_8192
;
2921 rctl
|= E1000_RCTL_SZ_16384
;
2925 /* Enable Extended Status in all Receive Descriptors */
2926 rfctl
= er32(RFCTL
);
2927 rfctl
|= E1000_RFCTL_EXTEN
;
2931 * 82571 and greater support packet-split where the protocol
2932 * header is placed in skb->data and the packet data is
2933 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2934 * In the case of a non-split, skb->data is linearly filled,
2935 * followed by the page buffers. Therefore, skb->data is
2936 * sized to hold the largest protocol header.
2938 * allocations using alloc_page take too long for regular MTU
2939 * so only enable packet split for jumbo frames
2941 * Using pages when the page size is greater than 16k wastes
2942 * a lot of memory, since we allocate 3 pages at all times
2945 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
2946 if ((pages
<= 3) && (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
2947 adapter
->rx_ps_pages
= pages
;
2949 adapter
->rx_ps_pages
= 0;
2951 if (adapter
->rx_ps_pages
) {
2954 /* Enable Packet split descriptors */
2955 rctl
|= E1000_RCTL_DTYP_PS
;
2957 psrctl
|= adapter
->rx_ps_bsize0
>>
2958 E1000_PSRCTL_BSIZE0_SHIFT
;
2960 switch (adapter
->rx_ps_pages
) {
2962 psrctl
|= PAGE_SIZE
<<
2963 E1000_PSRCTL_BSIZE3_SHIFT
;
2965 psrctl
|= PAGE_SIZE
<<
2966 E1000_PSRCTL_BSIZE2_SHIFT
;
2968 psrctl
|= PAGE_SIZE
>>
2969 E1000_PSRCTL_BSIZE1_SHIFT
;
2973 ew32(PSRCTL
, psrctl
);
2976 /* This is useful for sniffing bad packets. */
2977 if (adapter
->netdev
->features
& NETIF_F_RXALL
) {
2978 /* UPE and MPE will be handled by normal PROMISC logic
2979 * in e1000e_set_rx_mode */
2980 rctl
|= (E1000_RCTL_SBP
| /* Receive bad packets */
2981 E1000_RCTL_BAM
| /* RX All Bcast Pkts */
2982 E1000_RCTL_PMCF
); /* RX All MAC Ctrl Pkts */
2984 rctl
&= ~(E1000_RCTL_VFE
| /* Disable VLAN filter */
2985 E1000_RCTL_DPF
| /* Allow filtered pause */
2986 E1000_RCTL_CFIEN
); /* Dis VLAN CFIEN Filter */
2987 /* Do not mess with E1000_CTRL_VME, it affects transmit as well,
2988 * and that breaks VLANs.
2993 /* just started the receive unit, no need to restart */
2994 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
2998 * e1000_configure_rx - Configure Receive Unit after Reset
2999 * @adapter: board private structure
3001 * Configure the Rx unit of the MAC after a reset.
3003 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
3005 struct e1000_hw
*hw
= &adapter
->hw
;
3006 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
3008 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
3010 if (adapter
->rx_ps_pages
) {
3011 /* this is a 32 byte descriptor */
3012 rdlen
= rx_ring
->count
*
3013 sizeof(union e1000_rx_desc_packet_split
);
3014 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
3015 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
3016 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3017 rdlen
= rx_ring
->count
* sizeof(union e1000_rx_desc_extended
);
3018 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
3019 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
3021 rdlen
= rx_ring
->count
* sizeof(union e1000_rx_desc_extended
);
3022 adapter
->clean_rx
= e1000_clean_rx_irq
;
3023 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
3026 /* disable receives while setting up the descriptors */
3028 if (!(adapter
->flags2
& FLAG2_NO_DISABLE_RX
))
3029 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3031 usleep_range(10000, 20000);
3033 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
3035 * set the writeback threshold (only takes effect if the RDTR
3036 * is set). set GRAN=1 and write back up to 0x4 worth, and
3037 * enable prefetching of 0x20 Rx descriptors
3043 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE
);
3044 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE
);
3047 * override the delay timers for enabling bursting, only if
3048 * the value was not set by the user via module options
3050 if (adapter
->rx_int_delay
== DEFAULT_RDTR
)
3051 adapter
->rx_int_delay
= BURST_RDTR
;
3052 if (adapter
->rx_abs_int_delay
== DEFAULT_RADV
)
3053 adapter
->rx_abs_int_delay
= BURST_RADV
;
3056 /* set the Receive Delay Timer Register */
3057 ew32(RDTR
, adapter
->rx_int_delay
);
3059 /* irq moderation */
3060 ew32(RADV
, adapter
->rx_abs_int_delay
);
3061 if ((adapter
->itr_setting
!= 0) && (adapter
->itr
!= 0))
3062 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
3064 ctrl_ext
= er32(CTRL_EXT
);
3065 /* Auto-Mask interrupts upon ICR access */
3066 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
3067 ew32(IAM
, 0xffffffff);
3068 ew32(CTRL_EXT
, ctrl_ext
);
3072 * Setup the HW Rx Head and Tail Descriptor Pointers and
3073 * the Base and Length of the Rx Descriptor Ring
3075 rdba
= rx_ring
->dma
;
3076 ew32(RDBAL(0), (rdba
& DMA_BIT_MASK(32)));
3077 ew32(RDBAH(0), (rdba
>> 32));
3078 ew32(RDLEN(0), rdlen
);
3081 rx_ring
->head
= adapter
->hw
.hw_addr
+ E1000_RDH(0);
3082 rx_ring
->tail
= adapter
->hw
.hw_addr
+ E1000_RDT(0);
3084 /* Enable Receive Checksum Offload for TCP and UDP */
3085 rxcsum
= er32(RXCSUM
);
3086 if (adapter
->netdev
->features
& NETIF_F_RXCSUM
)
3087 rxcsum
|= E1000_RXCSUM_TUOFL
;
3089 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
3090 ew32(RXCSUM
, rxcsum
);
3092 if (adapter
->hw
.mac
.type
== e1000_pch2lan
) {
3094 * With jumbo frames, excessive C-state transition
3095 * latencies result in dropped transactions.
3097 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3098 u32 rxdctl
= er32(RXDCTL(0));
3099 ew32(RXDCTL(0), rxdctl
| 0x3);
3100 pm_qos_update_request(&adapter
->netdev
->pm_qos_req
, 55);
3102 pm_qos_update_request(&adapter
->netdev
->pm_qos_req
,
3103 PM_QOS_DEFAULT_VALUE
);
3107 /* Enable Receives */
3112 * e1000e_write_mc_addr_list - write multicast addresses to MTA
3113 * @netdev: network interface device structure
3115 * Writes multicast address list to the MTA hash table.
3116 * Returns: -ENOMEM on failure
3117 * 0 on no addresses written
3118 * X on writing X addresses to MTA
3120 static int e1000e_write_mc_addr_list(struct net_device
*netdev
)
3122 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3123 struct e1000_hw
*hw
= &adapter
->hw
;
3124 struct netdev_hw_addr
*ha
;
3128 if (netdev_mc_empty(netdev
)) {
3129 /* nothing to program, so clear mc list */
3130 hw
->mac
.ops
.update_mc_addr_list(hw
, NULL
, 0);
3134 mta_list
= kzalloc(netdev_mc_count(netdev
) * ETH_ALEN
, GFP_ATOMIC
);
3138 /* update_mc_addr_list expects a packed array of only addresses. */
3140 netdev_for_each_mc_addr(ha
, netdev
)
3141 memcpy(mta_list
+ (i
++ * ETH_ALEN
), ha
->addr
, ETH_ALEN
);
3143 hw
->mac
.ops
.update_mc_addr_list(hw
, mta_list
, i
);
3146 return netdev_mc_count(netdev
);
3150 * e1000e_write_uc_addr_list - write unicast addresses to RAR table
3151 * @netdev: network interface device structure
3153 * Writes unicast address list to the RAR table.
3154 * Returns: -ENOMEM on failure/insufficient address space
3155 * 0 on no addresses written
3156 * X on writing X addresses to the RAR table
3158 static int e1000e_write_uc_addr_list(struct net_device
*netdev
)
3160 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3161 struct e1000_hw
*hw
= &adapter
->hw
;
3162 unsigned int rar_entries
= hw
->mac
.rar_entry_count
;
3165 /* save a rar entry for our hardware address */
3168 /* save a rar entry for the LAA workaround */
3169 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
)
3172 /* return ENOMEM indicating insufficient memory for addresses */
3173 if (netdev_uc_count(netdev
) > rar_entries
)
3176 if (!netdev_uc_empty(netdev
) && rar_entries
) {
3177 struct netdev_hw_addr
*ha
;
3180 * write the addresses in reverse order to avoid write
3183 netdev_for_each_uc_addr(ha
, netdev
) {
3186 hw
->mac
.ops
.rar_set(hw
, ha
->addr
, rar_entries
--);
3191 /* zero out the remaining RAR entries not used above */
3192 for (; rar_entries
> 0; rar_entries
--) {
3193 ew32(RAH(rar_entries
), 0);
3194 ew32(RAL(rar_entries
), 0);
3202 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set
3203 * @netdev: network interface device structure
3205 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast
3206 * address list or the network interface flags are updated. This routine is
3207 * responsible for configuring the hardware for proper unicast, multicast,
3208 * promiscuous mode, and all-multi behavior.
3210 static void e1000e_set_rx_mode(struct net_device
*netdev
)
3212 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3213 struct e1000_hw
*hw
= &adapter
->hw
;
3216 /* Check for Promiscuous and All Multicast modes */
3219 /* clear the affected bits */
3220 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3222 if (netdev
->flags
& IFF_PROMISC
) {
3223 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3224 /* Do not hardware filter VLANs in promisc mode */
3225 e1000e_vlan_filter_disable(adapter
);
3229 if (netdev
->flags
& IFF_ALLMULTI
) {
3230 rctl
|= E1000_RCTL_MPE
;
3233 * Write addresses to the MTA, if the attempt fails
3234 * then we should just turn on promiscuous mode so
3235 * that we can at least receive multicast traffic
3237 count
= e1000e_write_mc_addr_list(netdev
);
3239 rctl
|= E1000_RCTL_MPE
;
3241 e1000e_vlan_filter_enable(adapter
);
3243 * Write addresses to available RAR registers, if there is not
3244 * sufficient space to store all the addresses then enable
3245 * unicast promiscuous mode
3247 count
= e1000e_write_uc_addr_list(netdev
);
3249 rctl
|= E1000_RCTL_UPE
;
3254 if (netdev
->features
& NETIF_F_HW_VLAN_RX
)
3255 e1000e_vlan_strip_enable(adapter
);
3257 e1000e_vlan_strip_disable(adapter
);
3260 static void e1000e_setup_rss_hash(struct e1000_adapter
*adapter
)
3262 struct e1000_hw
*hw
= &adapter
->hw
;
3265 static const u32 rsskey
[10] = {
3266 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0,
3267 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe
3270 /* Fill out hash function seed */
3271 for (i
= 0; i
< 10; i
++)
3272 ew32(RSSRK(i
), rsskey
[i
]);
3274 /* Direct all traffic to queue 0 */
3275 for (i
= 0; i
< 32; i
++)
3279 * Disable raw packet checksumming so that RSS hash is placed in
3280 * descriptor on writeback.
3282 rxcsum
= er32(RXCSUM
);
3283 rxcsum
|= E1000_RXCSUM_PCSD
;
3285 ew32(RXCSUM
, rxcsum
);
3287 mrqc
= (E1000_MRQC_RSS_FIELD_IPV4
|
3288 E1000_MRQC_RSS_FIELD_IPV4_TCP
|
3289 E1000_MRQC_RSS_FIELD_IPV6
|
3290 E1000_MRQC_RSS_FIELD_IPV6_TCP
|
3291 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX
);
3297 * e1000_configure - configure the hardware for Rx and Tx
3298 * @adapter: private board structure
3300 static void e1000_configure(struct e1000_adapter
*adapter
)
3302 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
3304 e1000e_set_rx_mode(adapter
->netdev
);
3306 e1000_restore_vlan(adapter
);
3307 e1000_init_manageability_pt(adapter
);
3309 e1000_configure_tx(adapter
);
3311 if (adapter
->netdev
->features
& NETIF_F_RXHASH
)
3312 e1000e_setup_rss_hash(adapter
);
3313 e1000_setup_rctl(adapter
);
3314 e1000_configure_rx(adapter
);
3315 adapter
->alloc_rx_buf(rx_ring
, e1000_desc_unused(rx_ring
), GFP_KERNEL
);
3319 * e1000e_power_up_phy - restore link in case the phy was powered down
3320 * @adapter: address of board private structure
3322 * The phy may be powered down to save power and turn off link when the
3323 * driver is unloaded and wake on lan is not enabled (among others)
3324 * *** this routine MUST be followed by a call to e1000e_reset ***
3326 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
3328 if (adapter
->hw
.phy
.ops
.power_up
)
3329 adapter
->hw
.phy
.ops
.power_up(&adapter
->hw
);
3331 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
3335 * e1000_power_down_phy - Power down the PHY
3337 * Power down the PHY so no link is implied when interface is down.
3338 * The PHY cannot be powered down if management or WoL is active.
3340 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
3342 /* WoL is enabled */
3346 if (adapter
->hw
.phy
.ops
.power_down
)
3347 adapter
->hw
.phy
.ops
.power_down(&adapter
->hw
);
3351 * e1000e_reset - bring the hardware into a known good state
3353 * This function boots the hardware and enables some settings that
3354 * require a configuration cycle of the hardware - those cannot be
3355 * set/changed during runtime. After reset the device needs to be
3356 * properly configured for Rx, Tx etc.
3358 void e1000e_reset(struct e1000_adapter
*adapter
)
3360 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3361 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
3362 struct e1000_hw
*hw
= &adapter
->hw
;
3363 u32 tx_space
, min_tx_space
, min_rx_space
;
3364 u32 pba
= adapter
->pba
;
3367 /* reset Packet Buffer Allocation to default */
3370 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3372 * To maintain wire speed transmits, the Tx FIFO should be
3373 * large enough to accommodate two full transmit packets,
3374 * rounded up to the next 1KB and expressed in KB. Likewise,
3375 * the Rx FIFO should be large enough to accommodate at least
3376 * one full receive packet and is similarly rounded up and
3380 /* upper 16 bits has Tx packet buffer allocation size in KB */
3381 tx_space
= pba
>> 16;
3382 /* lower 16 bits has Rx packet buffer allocation size in KB */
3385 * the Tx fifo also stores 16 bytes of information about the Tx
3386 * but don't include ethernet FCS because hardware appends it
3388 min_tx_space
= (adapter
->max_frame_size
+
3389 sizeof(struct e1000_tx_desc
) -
3391 min_tx_space
= ALIGN(min_tx_space
, 1024);
3392 min_tx_space
>>= 10;
3393 /* software strips receive CRC, so leave room for it */
3394 min_rx_space
= adapter
->max_frame_size
;
3395 min_rx_space
= ALIGN(min_rx_space
, 1024);
3396 min_rx_space
>>= 10;
3399 * If current Tx allocation is less than the min Tx FIFO size,
3400 * and the min Tx FIFO size is less than the current Rx FIFO
3401 * allocation, take space away from current Rx allocation
3403 if ((tx_space
< min_tx_space
) &&
3404 ((min_tx_space
- tx_space
) < pba
)) {
3405 pba
-= min_tx_space
- tx_space
;
3408 * if short on Rx space, Rx wins and must trump Tx
3409 * adjustment or use Early Receive if available
3411 if (pba
< min_rx_space
)
3419 * flow control settings
3421 * The high water mark must be low enough to fit one full frame
3422 * (or the size used for early receive) above it in the Rx FIFO.
3423 * Set it to the lower of:
3424 * - 90% of the Rx FIFO size, and
3425 * - the full Rx FIFO size minus one full frame
3427 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
3428 fc
->pause_time
= 0xFFFF;
3430 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
3431 fc
->send_xon
= true;
3432 fc
->current_mode
= fc
->requested_mode
;
3434 switch (hw
->mac
.type
) {
3436 case e1000_ich10lan
:
3437 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3440 fc
->high_water
= 0x2800;
3441 fc
->low_water
= fc
->high_water
- 8;
3446 hwm
= min(((pba
<< 10) * 9 / 10),
3447 ((pba
<< 10) - adapter
->max_frame_size
));
3449 fc
->high_water
= hwm
& E1000_FCRTH_RTH
; /* 8-byte granularity */
3450 fc
->low_water
= fc
->high_water
- 8;
3454 * Workaround PCH LOM adapter hangs with certain network
3455 * loads. If hangs persist, try disabling Tx flow control.
3457 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3458 fc
->high_water
= 0x3500;
3459 fc
->low_water
= 0x1500;
3461 fc
->high_water
= 0x5000;
3462 fc
->low_water
= 0x3000;
3464 fc
->refresh_time
= 0x1000;
3468 fc
->high_water
= 0x05C20;
3469 fc
->low_water
= 0x05048;
3470 fc
->pause_time
= 0x0650;
3471 fc
->refresh_time
= 0x0400;
3472 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3480 * Disable Adaptive Interrupt Moderation if 2 full packets cannot
3481 * fit in receive buffer.
3483 if (adapter
->itr_setting
& 0x3) {
3484 if ((adapter
->max_frame_size
* 2) > (pba
<< 10)) {
3485 if (!(adapter
->flags2
& FLAG2_DISABLE_AIM
)) {
3486 dev_info(&adapter
->pdev
->dev
,
3487 "Interrupt Throttle Rate turned off\n");
3488 adapter
->flags2
|= FLAG2_DISABLE_AIM
;
3491 } else if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
3492 dev_info(&adapter
->pdev
->dev
,
3493 "Interrupt Throttle Rate turned on\n");
3494 adapter
->flags2
&= ~FLAG2_DISABLE_AIM
;
3495 adapter
->itr
= 20000;
3496 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
3500 /* Allow time for pending master requests to run */
3501 mac
->ops
.reset_hw(hw
);
3504 * For parts with AMT enabled, let the firmware know
3505 * that the network interface is in control
3507 if (adapter
->flags
& FLAG_HAS_AMT
)
3508 e1000e_get_hw_control(adapter
);
3512 if (mac
->ops
.init_hw(hw
))
3513 e_err("Hardware Error\n");
3515 e1000_update_mng_vlan(adapter
);
3517 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3518 ew32(VET
, ETH_P_8021Q
);
3520 e1000e_reset_adaptive(hw
);
3522 if (!netif_running(adapter
->netdev
) &&
3523 !test_bit(__E1000_TESTING
, &adapter
->state
)) {
3524 e1000_power_down_phy(adapter
);
3528 e1000_get_phy_info(hw
);
3530 if ((adapter
->flags
& FLAG_HAS_SMART_POWER_DOWN
) &&
3531 !(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
3534 * speed up time to link by disabling smart power down, ignore
3535 * the return value of this function because there is nothing
3536 * different we would do if it failed
3538 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
3539 phy_data
&= ~IGP02E1000_PM_SPD
;
3540 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
3544 int e1000e_up(struct e1000_adapter
*adapter
)
3546 struct e1000_hw
*hw
= &adapter
->hw
;
3548 /* hardware has been reset, we need to reload some things */
3549 e1000_configure(adapter
);
3551 clear_bit(__E1000_DOWN
, &adapter
->state
);
3553 if (adapter
->msix_entries
)
3554 e1000_configure_msix(adapter
);
3555 e1000_irq_enable(adapter
);
3557 netif_start_queue(adapter
->netdev
);
3559 /* fire a link change interrupt to start the watchdog */
3560 if (adapter
->msix_entries
)
3561 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
3563 ew32(ICS
, E1000_ICS_LSC
);
3568 static void e1000e_flush_descriptors(struct e1000_adapter
*adapter
)
3570 struct e1000_hw
*hw
= &adapter
->hw
;
3572 if (!(adapter
->flags2
& FLAG2_DMA_BURST
))
3575 /* flush pending descriptor writebacks to memory */
3576 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
3577 ew32(RDTR
, adapter
->rx_int_delay
| E1000_RDTR_FPD
);
3579 /* execute the writes immediately */
3583 * due to rare timing issues, write to TIDV/RDTR again to ensure the
3584 * write is successful
3586 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
3587 ew32(RDTR
, adapter
->rx_int_delay
| E1000_RDTR_FPD
);
3589 /* execute the writes immediately */
3593 static void e1000e_update_stats(struct e1000_adapter
*adapter
);
3595 void e1000e_down(struct e1000_adapter
*adapter
)
3597 struct net_device
*netdev
= adapter
->netdev
;
3598 struct e1000_hw
*hw
= &adapter
->hw
;
3602 * signal that we're down so the interrupt handler does not
3603 * reschedule our watchdog timer
3605 set_bit(__E1000_DOWN
, &adapter
->state
);
3607 /* disable receives in the hardware */
3609 if (!(adapter
->flags2
& FLAG2_NO_DISABLE_RX
))
3610 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3611 /* flush and sleep below */
3613 netif_stop_queue(netdev
);
3615 /* disable transmits in the hardware */
3617 tctl
&= ~E1000_TCTL_EN
;
3620 /* flush both disables and wait for them to finish */
3622 usleep_range(10000, 20000);
3624 e1000_irq_disable(adapter
);
3626 del_timer_sync(&adapter
->watchdog_timer
);
3627 del_timer_sync(&adapter
->phy_info_timer
);
3629 netif_carrier_off(netdev
);
3631 spin_lock(&adapter
->stats64_lock
);
3632 e1000e_update_stats(adapter
);
3633 spin_unlock(&adapter
->stats64_lock
);
3635 e1000e_flush_descriptors(adapter
);
3636 e1000_clean_tx_ring(adapter
->tx_ring
);
3637 e1000_clean_rx_ring(adapter
->rx_ring
);
3639 adapter
->link_speed
= 0;
3640 adapter
->link_duplex
= 0;
3642 if (!pci_channel_offline(adapter
->pdev
))
3643 e1000e_reset(adapter
);
3646 * TODO: for power management, we could drop the link and
3647 * pci_disable_device here.
3651 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
3654 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
3655 usleep_range(1000, 2000);
3656 e1000e_down(adapter
);
3658 clear_bit(__E1000_RESETTING
, &adapter
->state
);
3662 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
3663 * @adapter: board private structure to initialize
3665 * e1000_sw_init initializes the Adapter private data structure.
3666 * Fields are initialized based on PCI device information and
3667 * OS network device settings (MTU size).
3669 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
3671 struct net_device
*netdev
= adapter
->netdev
;
3673 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
3674 adapter
->rx_ps_bsize0
= 128;
3675 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3676 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
3677 adapter
->tx_ring_count
= E1000_DEFAULT_TXD
;
3678 adapter
->rx_ring_count
= E1000_DEFAULT_RXD
;
3680 spin_lock_init(&adapter
->stats64_lock
);
3682 e1000e_set_interrupt_capability(adapter
);
3684 if (e1000_alloc_queues(adapter
))
3687 /* Explicitly disable IRQ since the NIC can be in any state. */
3688 e1000_irq_disable(adapter
);
3690 set_bit(__E1000_DOWN
, &adapter
->state
);
3695 * e1000_intr_msi_test - Interrupt Handler
3696 * @irq: interrupt number
3697 * @data: pointer to a network interface device structure
3699 static irqreturn_t
e1000_intr_msi_test(int irq
, void *data
)
3701 struct net_device
*netdev
= data
;
3702 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3703 struct e1000_hw
*hw
= &adapter
->hw
;
3704 u32 icr
= er32(ICR
);
3706 e_dbg("icr is %08X\n", icr
);
3707 if (icr
& E1000_ICR_RXSEQ
) {
3708 adapter
->flags
&= ~FLAG_MSI_TEST_FAILED
;
3716 * e1000_test_msi_interrupt - Returns 0 for successful test
3717 * @adapter: board private struct
3719 * code flow taken from tg3.c
3721 static int e1000_test_msi_interrupt(struct e1000_adapter
*adapter
)
3723 struct net_device
*netdev
= adapter
->netdev
;
3724 struct e1000_hw
*hw
= &adapter
->hw
;
3727 /* poll_enable hasn't been called yet, so don't need disable */
3728 /* clear any pending events */
3731 /* free the real vector and request a test handler */
3732 e1000_free_irq(adapter
);
3733 e1000e_reset_interrupt_capability(adapter
);
3735 /* Assume that the test fails, if it succeeds then the test
3736 * MSI irq handler will unset this flag */
3737 adapter
->flags
|= FLAG_MSI_TEST_FAILED
;
3739 err
= pci_enable_msi(adapter
->pdev
);
3741 goto msi_test_failed
;
3743 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi_test
, 0,
3744 netdev
->name
, netdev
);
3746 pci_disable_msi(adapter
->pdev
);
3747 goto msi_test_failed
;
3752 e1000_irq_enable(adapter
);
3754 /* fire an unusual interrupt on the test handler */
3755 ew32(ICS
, E1000_ICS_RXSEQ
);
3759 e1000_irq_disable(adapter
);
3763 if (adapter
->flags
& FLAG_MSI_TEST_FAILED
) {
3764 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
3765 e_info("MSI interrupt test failed, using legacy interrupt.\n");
3767 e_dbg("MSI interrupt test succeeded!\n");
3770 free_irq(adapter
->pdev
->irq
, netdev
);
3771 pci_disable_msi(adapter
->pdev
);
3774 e1000e_set_interrupt_capability(adapter
);
3775 return e1000_request_irq(adapter
);
3779 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3780 * @adapter: board private struct
3782 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3784 static int e1000_test_msi(struct e1000_adapter
*adapter
)
3789 if (!(adapter
->flags
& FLAG_MSI_ENABLED
))
3792 /* disable SERR in case the MSI write causes a master abort */
3793 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3794 if (pci_cmd
& PCI_COMMAND_SERR
)
3795 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
,
3796 pci_cmd
& ~PCI_COMMAND_SERR
);
3798 err
= e1000_test_msi_interrupt(adapter
);
3800 /* re-enable SERR */
3801 if (pci_cmd
& PCI_COMMAND_SERR
) {
3802 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3803 pci_cmd
|= PCI_COMMAND_SERR
;
3804 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
, pci_cmd
);
3811 * e1000_open - Called when a network interface is made active
3812 * @netdev: network interface device structure
3814 * Returns 0 on success, negative value on failure
3816 * The open entry point is called when a network interface is made
3817 * active by the system (IFF_UP). At this point all resources needed
3818 * for transmit and receive operations are allocated, the interrupt
3819 * handler is registered with the OS, the watchdog timer is started,
3820 * and the stack is notified that the interface is ready.
3822 static int e1000_open(struct net_device
*netdev
)
3824 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3825 struct e1000_hw
*hw
= &adapter
->hw
;
3826 struct pci_dev
*pdev
= adapter
->pdev
;
3829 /* disallow open during test */
3830 if (test_bit(__E1000_TESTING
, &adapter
->state
))
3833 pm_runtime_get_sync(&pdev
->dev
);
3835 netif_carrier_off(netdev
);
3837 /* allocate transmit descriptors */
3838 err
= e1000e_setup_tx_resources(adapter
->tx_ring
);
3842 /* allocate receive descriptors */
3843 err
= e1000e_setup_rx_resources(adapter
->rx_ring
);
3848 * If AMT is enabled, let the firmware know that the network
3849 * interface is now open and reset the part to a known state.
3851 if (adapter
->flags
& FLAG_HAS_AMT
) {
3852 e1000e_get_hw_control(adapter
);
3853 e1000e_reset(adapter
);
3856 e1000e_power_up_phy(adapter
);
3858 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
3859 if ((adapter
->hw
.mng_cookie
.status
&
3860 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
3861 e1000_update_mng_vlan(adapter
);
3863 /* DMA latency requirement to workaround jumbo issue */
3864 if (adapter
->hw
.mac
.type
== e1000_pch2lan
)
3865 pm_qos_add_request(&adapter
->netdev
->pm_qos_req
,
3866 PM_QOS_CPU_DMA_LATENCY
,
3867 PM_QOS_DEFAULT_VALUE
);
3870 * before we allocate an interrupt, we must be ready to handle it.
3871 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3872 * as soon as we call pci_request_irq, so we have to setup our
3873 * clean_rx handler before we do so.
3875 e1000_configure(adapter
);
3877 err
= e1000_request_irq(adapter
);
3882 * Work around PCIe errata with MSI interrupts causing some chipsets to
3883 * ignore e1000e MSI messages, which means we need to test our MSI
3886 if (adapter
->int_mode
!= E1000E_INT_MODE_LEGACY
) {
3887 err
= e1000_test_msi(adapter
);
3889 e_err("Interrupt allocation failed\n");
3894 /* From here on the code is the same as e1000e_up() */
3895 clear_bit(__E1000_DOWN
, &adapter
->state
);
3897 napi_enable(&adapter
->napi
);
3899 e1000_irq_enable(adapter
);
3901 adapter
->tx_hang_recheck
= false;
3902 netif_start_queue(netdev
);
3904 adapter
->idle_check
= true;
3905 pm_runtime_put(&pdev
->dev
);
3907 /* fire a link status change interrupt to start the watchdog */
3908 if (adapter
->msix_entries
)
3909 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
3911 ew32(ICS
, E1000_ICS_LSC
);
3916 e1000e_release_hw_control(adapter
);
3917 e1000_power_down_phy(adapter
);
3918 e1000e_free_rx_resources(adapter
->rx_ring
);
3920 e1000e_free_tx_resources(adapter
->tx_ring
);
3922 e1000e_reset(adapter
);
3923 pm_runtime_put_sync(&pdev
->dev
);
3929 * e1000_close - Disables a network interface
3930 * @netdev: network interface device structure
3932 * Returns 0, this is not allowed to fail
3934 * The close entry point is called when an interface is de-activated
3935 * by the OS. The hardware is still under the drivers control, but
3936 * needs to be disabled. A global MAC reset is issued to stop the
3937 * hardware, and all transmit and receive resources are freed.
3939 static int e1000_close(struct net_device
*netdev
)
3941 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3942 struct pci_dev
*pdev
= adapter
->pdev
;
3943 int count
= E1000_CHECK_RESET_COUNT
;
3945 while (test_bit(__E1000_RESETTING
, &adapter
->state
) && count
--)
3946 usleep_range(10000, 20000);
3948 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
3950 pm_runtime_get_sync(&pdev
->dev
);
3952 napi_disable(&adapter
->napi
);
3954 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
3955 e1000e_down(adapter
);
3956 e1000_free_irq(adapter
);
3958 e1000_power_down_phy(adapter
);
3960 e1000e_free_tx_resources(adapter
->tx_ring
);
3961 e1000e_free_rx_resources(adapter
->rx_ring
);
3964 * kill manageability vlan ID if supported, but not if a vlan with
3965 * the same ID is registered on the host OS (let 8021q kill it)
3967 if (adapter
->hw
.mng_cookie
.status
&
3968 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)
3969 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
3972 * If AMT is enabled, let the firmware know that the network
3973 * interface is now closed
3975 if ((adapter
->flags
& FLAG_HAS_AMT
) &&
3976 !test_bit(__E1000_TESTING
, &adapter
->state
))
3977 e1000e_release_hw_control(adapter
);
3979 if (adapter
->hw
.mac
.type
== e1000_pch2lan
)
3980 pm_qos_remove_request(&adapter
->netdev
->pm_qos_req
);
3982 pm_runtime_put_sync(&pdev
->dev
);
3987 * e1000_set_mac - Change the Ethernet Address of the NIC
3988 * @netdev: network interface device structure
3989 * @p: pointer to an address structure
3991 * Returns 0 on success, negative on failure
3993 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
3995 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3996 struct e1000_hw
*hw
= &adapter
->hw
;
3997 struct sockaddr
*addr
= p
;
3999 if (!is_valid_ether_addr(addr
->sa_data
))
4000 return -EADDRNOTAVAIL
;
4002 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
4003 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
4005 hw
->mac
.ops
.rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
4007 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
4008 /* activate the work around */
4009 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
4012 * Hold a copy of the LAA in RAR[14] This is done so that
4013 * between the time RAR[0] gets clobbered and the time it
4014 * gets fixed (in e1000_watchdog), the actual LAA is in one
4015 * of the RARs and no incoming packets directed to this port
4016 * are dropped. Eventually the LAA will be in RAR[0] and
4019 hw
->mac
.ops
.rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
,
4020 adapter
->hw
.mac
.rar_entry_count
- 1);
4027 * e1000e_update_phy_task - work thread to update phy
4028 * @work: pointer to our work struct
4030 * this worker thread exists because we must acquire a
4031 * semaphore to read the phy, which we could msleep while
4032 * waiting for it, and we can't msleep in a timer.
4034 static void e1000e_update_phy_task(struct work_struct
*work
)
4036 struct e1000_adapter
*adapter
= container_of(work
,
4037 struct e1000_adapter
, update_phy_task
);
4039 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4042 e1000_get_phy_info(&adapter
->hw
);
4046 * Need to wait a few seconds after link up to get diagnostic information from
4049 static void e1000_update_phy_info(unsigned long data
)
4051 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
4053 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4056 schedule_work(&adapter
->update_phy_task
);
4060 * e1000e_update_phy_stats - Update the PHY statistics counters
4061 * @adapter: board private structure
4063 * Read/clear the upper 16-bit PHY registers and read/accumulate lower
4065 static void e1000e_update_phy_stats(struct e1000_adapter
*adapter
)
4067 struct e1000_hw
*hw
= &adapter
->hw
;
4071 ret_val
= hw
->phy
.ops
.acquire(hw
);
4076 * A page set is expensive so check if already on desired page.
4077 * If not, set to the page with the PHY status registers.
4080 ret_val
= e1000e_read_phy_reg_mdic(hw
, IGP01E1000_PHY_PAGE_SELECT
,
4084 if (phy_data
!= (HV_STATS_PAGE
<< IGP_PAGE_SHIFT
)) {
4085 ret_val
= hw
->phy
.ops
.set_page(hw
,
4086 HV_STATS_PAGE
<< IGP_PAGE_SHIFT
);
4091 /* Single Collision Count */
4092 hw
->phy
.ops
.read_reg_page(hw
, HV_SCC_UPPER
, &phy_data
);
4093 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_SCC_LOWER
, &phy_data
);
4095 adapter
->stats
.scc
+= phy_data
;
4097 /* Excessive Collision Count */
4098 hw
->phy
.ops
.read_reg_page(hw
, HV_ECOL_UPPER
, &phy_data
);
4099 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_ECOL_LOWER
, &phy_data
);
4101 adapter
->stats
.ecol
+= phy_data
;
4103 /* Multiple Collision Count */
4104 hw
->phy
.ops
.read_reg_page(hw
, HV_MCC_UPPER
, &phy_data
);
4105 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_MCC_LOWER
, &phy_data
);
4107 adapter
->stats
.mcc
+= phy_data
;
4109 /* Late Collision Count */
4110 hw
->phy
.ops
.read_reg_page(hw
, HV_LATECOL_UPPER
, &phy_data
);
4111 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_LATECOL_LOWER
, &phy_data
);
4113 adapter
->stats
.latecol
+= phy_data
;
4115 /* Collision Count - also used for adaptive IFS */
4116 hw
->phy
.ops
.read_reg_page(hw
, HV_COLC_UPPER
, &phy_data
);
4117 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_COLC_LOWER
, &phy_data
);
4119 hw
->mac
.collision_delta
= phy_data
;
4122 hw
->phy
.ops
.read_reg_page(hw
, HV_DC_UPPER
, &phy_data
);
4123 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_DC_LOWER
, &phy_data
);
4125 adapter
->stats
.dc
+= phy_data
;
4127 /* Transmit with no CRS */
4128 hw
->phy
.ops
.read_reg_page(hw
, HV_TNCRS_UPPER
, &phy_data
);
4129 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_TNCRS_LOWER
, &phy_data
);
4131 adapter
->stats
.tncrs
+= phy_data
;
4134 hw
->phy
.ops
.release(hw
);
4138 * e1000e_update_stats - Update the board statistics counters
4139 * @adapter: board private structure
4141 static void e1000e_update_stats(struct e1000_adapter
*adapter
)
4143 struct net_device
*netdev
= adapter
->netdev
;
4144 struct e1000_hw
*hw
= &adapter
->hw
;
4145 struct pci_dev
*pdev
= adapter
->pdev
;
4148 * Prevent stats update while adapter is being reset, or if the pci
4149 * connection is down.
4151 if (adapter
->link_speed
== 0)
4153 if (pci_channel_offline(pdev
))
4156 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
4157 adapter
->stats
.gprc
+= er32(GPRC
);
4158 adapter
->stats
.gorc
+= er32(GORCL
);
4159 er32(GORCH
); /* Clear gorc */
4160 adapter
->stats
.bprc
+= er32(BPRC
);
4161 adapter
->stats
.mprc
+= er32(MPRC
);
4162 adapter
->stats
.roc
+= er32(ROC
);
4164 adapter
->stats
.mpc
+= er32(MPC
);
4166 /* Half-duplex statistics */
4167 if (adapter
->link_duplex
== HALF_DUPLEX
) {
4168 if (adapter
->flags2
& FLAG2_HAS_PHY_STATS
) {
4169 e1000e_update_phy_stats(adapter
);
4171 adapter
->stats
.scc
+= er32(SCC
);
4172 adapter
->stats
.ecol
+= er32(ECOL
);
4173 adapter
->stats
.mcc
+= er32(MCC
);
4174 adapter
->stats
.latecol
+= er32(LATECOL
);
4175 adapter
->stats
.dc
+= er32(DC
);
4177 hw
->mac
.collision_delta
= er32(COLC
);
4179 if ((hw
->mac
.type
!= e1000_82574
) &&
4180 (hw
->mac
.type
!= e1000_82583
))
4181 adapter
->stats
.tncrs
+= er32(TNCRS
);
4183 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
4186 adapter
->stats
.xonrxc
+= er32(XONRXC
);
4187 adapter
->stats
.xontxc
+= er32(XONTXC
);
4188 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
4189 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
4190 adapter
->stats
.gptc
+= er32(GPTC
);
4191 adapter
->stats
.gotc
+= er32(GOTCL
);
4192 er32(GOTCH
); /* Clear gotc */
4193 adapter
->stats
.rnbc
+= er32(RNBC
);
4194 adapter
->stats
.ruc
+= er32(RUC
);
4196 adapter
->stats
.mptc
+= er32(MPTC
);
4197 adapter
->stats
.bptc
+= er32(BPTC
);
4199 /* used for adaptive IFS */
4201 hw
->mac
.tx_packet_delta
= er32(TPT
);
4202 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
4204 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
4205 adapter
->stats
.rxerrc
+= er32(RXERRC
);
4206 adapter
->stats
.cexterr
+= er32(CEXTERR
);
4207 adapter
->stats
.tsctc
+= er32(TSCTC
);
4208 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
4210 /* Fill out the OS statistics structure */
4211 netdev
->stats
.multicast
= adapter
->stats
.mprc
;
4212 netdev
->stats
.collisions
= adapter
->stats
.colc
;
4217 * RLEC on some newer hardware can be incorrect so build
4218 * our own version based on RUC and ROC
4220 netdev
->stats
.rx_errors
= adapter
->stats
.rxerrc
+
4221 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
4222 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
4223 adapter
->stats
.cexterr
;
4224 netdev
->stats
.rx_length_errors
= adapter
->stats
.ruc
+
4226 netdev
->stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
4227 netdev
->stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
4228 netdev
->stats
.rx_missed_errors
= adapter
->stats
.mpc
;
4231 netdev
->stats
.tx_errors
= adapter
->stats
.ecol
+
4232 adapter
->stats
.latecol
;
4233 netdev
->stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
4234 netdev
->stats
.tx_window_errors
= adapter
->stats
.latecol
;
4235 netdev
->stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
4237 /* Tx Dropped needs to be maintained elsewhere */
4239 /* Management Stats */
4240 adapter
->stats
.mgptc
+= er32(MGTPTC
);
4241 adapter
->stats
.mgprc
+= er32(MGTPRC
);
4242 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
4246 * e1000_phy_read_status - Update the PHY register status snapshot
4247 * @adapter: board private structure
4249 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
4251 struct e1000_hw
*hw
= &adapter
->hw
;
4252 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
4254 if ((er32(STATUS
) & E1000_STATUS_LU
) &&
4255 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
4258 ret_val
= e1e_rphy(hw
, PHY_CONTROL
, &phy
->bmcr
);
4259 ret_val
|= e1e_rphy(hw
, PHY_STATUS
, &phy
->bmsr
);
4260 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_ADV
, &phy
->advertise
);
4261 ret_val
|= e1e_rphy(hw
, PHY_LP_ABILITY
, &phy
->lpa
);
4262 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_EXP
, &phy
->expansion
);
4263 ret_val
|= e1e_rphy(hw
, PHY_1000T_CTRL
, &phy
->ctrl1000
);
4264 ret_val
|= e1e_rphy(hw
, PHY_1000T_STATUS
, &phy
->stat1000
);
4265 ret_val
|= e1e_rphy(hw
, PHY_EXT_STATUS
, &phy
->estatus
);
4267 e_warn("Error reading PHY register\n");
4270 * Do not read PHY registers if link is not up
4271 * Set values to typical power-on defaults
4273 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
4274 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
4275 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
4277 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
4278 ADVERTISE_ALL
| ADVERTISE_CSMA
);
4280 phy
->expansion
= EXPANSION_ENABLENPAGE
;
4281 phy
->ctrl1000
= ADVERTISE_1000FULL
;
4283 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
4287 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
4289 struct e1000_hw
*hw
= &adapter
->hw
;
4290 u32 ctrl
= er32(CTRL
);
4292 /* Link status message must follow this format for user tools */
4293 printk(KERN_INFO
"e1000e: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n",
4294 adapter
->netdev
->name
,
4295 adapter
->link_speed
,
4296 adapter
->link_duplex
== FULL_DUPLEX
? "Full" : "Half",
4297 (ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
) ? "Rx/Tx" :
4298 (ctrl
& E1000_CTRL_RFCE
) ? "Rx" :
4299 (ctrl
& E1000_CTRL_TFCE
) ? "Tx" : "None");
4302 static bool e1000e_has_link(struct e1000_adapter
*adapter
)
4304 struct e1000_hw
*hw
= &adapter
->hw
;
4305 bool link_active
= false;
4309 * get_link_status is set on LSC (link status) interrupt or
4310 * Rx sequence error interrupt. get_link_status will stay
4311 * false until the check_for_link establishes link
4312 * for copper adapters ONLY
4314 switch (hw
->phy
.media_type
) {
4315 case e1000_media_type_copper
:
4316 if (hw
->mac
.get_link_status
) {
4317 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4318 link_active
= !hw
->mac
.get_link_status
;
4323 case e1000_media_type_fiber
:
4324 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4325 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
4327 case e1000_media_type_internal_serdes
:
4328 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4329 link_active
= adapter
->hw
.mac
.serdes_has_link
;
4332 case e1000_media_type_unknown
:
4336 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
4337 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
4338 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
4339 e_info("Gigabit has been disabled, downgrading speed\n");
4345 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
4347 /* make sure the receive unit is started */
4348 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
4349 (adapter
->flags
& FLAG_RX_RESTART_NOW
)) {
4350 struct e1000_hw
*hw
= &adapter
->hw
;
4351 u32 rctl
= er32(RCTL
);
4352 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
4353 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
4357 static void e1000e_check_82574_phy_workaround(struct e1000_adapter
*adapter
)
4359 struct e1000_hw
*hw
= &adapter
->hw
;
4362 * With 82574 controllers, PHY needs to be checked periodically
4363 * for hung state and reset, if two calls return true
4365 if (e1000_check_phy_82574(hw
))
4366 adapter
->phy_hang_count
++;
4368 adapter
->phy_hang_count
= 0;
4370 if (adapter
->phy_hang_count
> 1) {
4371 adapter
->phy_hang_count
= 0;
4372 schedule_work(&adapter
->reset_task
);
4377 * e1000_watchdog - Timer Call-back
4378 * @data: pointer to adapter cast into an unsigned long
4380 static void e1000_watchdog(unsigned long data
)
4382 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
4384 /* Do the rest outside of interrupt context */
4385 schedule_work(&adapter
->watchdog_task
);
4387 /* TODO: make this use queue_delayed_work() */
4390 static void e1000_watchdog_task(struct work_struct
*work
)
4392 struct e1000_adapter
*adapter
= container_of(work
,
4393 struct e1000_adapter
, watchdog_task
);
4394 struct net_device
*netdev
= adapter
->netdev
;
4395 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
4396 struct e1000_phy_info
*phy
= &adapter
->hw
.phy
;
4397 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4398 struct e1000_hw
*hw
= &adapter
->hw
;
4401 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4404 link
= e1000e_has_link(adapter
);
4405 if ((netif_carrier_ok(netdev
)) && link
) {
4406 /* Cancel scheduled suspend requests. */
4407 pm_runtime_resume(netdev
->dev
.parent
);
4409 e1000e_enable_receives(adapter
);
4413 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
4414 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
4415 e1000_update_mng_vlan(adapter
);
4418 if (!netif_carrier_ok(netdev
)) {
4421 /* Cancel scheduled suspend requests. */
4422 pm_runtime_resume(netdev
->dev
.parent
);
4424 /* update snapshot of PHY registers on LSC */
4425 e1000_phy_read_status(adapter
);
4426 mac
->ops
.get_link_up_info(&adapter
->hw
,
4427 &adapter
->link_speed
,
4428 &adapter
->link_duplex
);
4429 e1000_print_link_info(adapter
);
4431 * On supported PHYs, check for duplex mismatch only
4432 * if link has autonegotiated at 10/100 half
4434 if ((hw
->phy
.type
== e1000_phy_igp_3
||
4435 hw
->phy
.type
== e1000_phy_bm
) &&
4436 (hw
->mac
.autoneg
== true) &&
4437 (adapter
->link_speed
== SPEED_10
||
4438 adapter
->link_speed
== SPEED_100
) &&
4439 (adapter
->link_duplex
== HALF_DUPLEX
)) {
4442 e1e_rphy(hw
, PHY_AUTONEG_EXP
, &autoneg_exp
);
4444 if (!(autoneg_exp
& NWAY_ER_LP_NWAY_CAPS
))
4445 e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n");
4448 /* adjust timeout factor according to speed/duplex */
4449 adapter
->tx_timeout_factor
= 1;
4450 switch (adapter
->link_speed
) {
4453 adapter
->tx_timeout_factor
= 16;
4457 adapter
->tx_timeout_factor
= 10;
4462 * workaround: re-program speed mode bit after
4465 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
4468 tarc0
= er32(TARC(0));
4469 tarc0
&= ~SPEED_MODE_BIT
;
4470 ew32(TARC(0), tarc0
);
4474 * disable TSO for pcie and 10/100 speeds, to avoid
4475 * some hardware issues
4477 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
4478 switch (adapter
->link_speed
) {
4481 e_info("10/100 speed: disabling TSO\n");
4482 netdev
->features
&= ~NETIF_F_TSO
;
4483 netdev
->features
&= ~NETIF_F_TSO6
;
4486 netdev
->features
|= NETIF_F_TSO
;
4487 netdev
->features
|= NETIF_F_TSO6
;
4496 * enable transmits in the hardware, need to do this
4497 * after setting TARC(0)
4500 tctl
|= E1000_TCTL_EN
;
4504 * Perform any post-link-up configuration before
4505 * reporting link up.
4507 if (phy
->ops
.cfg_on_link_up
)
4508 phy
->ops
.cfg_on_link_up(hw
);
4510 netif_carrier_on(netdev
);
4512 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4513 mod_timer(&adapter
->phy_info_timer
,
4514 round_jiffies(jiffies
+ 2 * HZ
));
4517 if (netif_carrier_ok(netdev
)) {
4518 adapter
->link_speed
= 0;
4519 adapter
->link_duplex
= 0;
4520 /* Link status message must follow this format */
4521 printk(KERN_INFO
"e1000e: %s NIC Link is Down\n",
4522 adapter
->netdev
->name
);
4523 netif_carrier_off(netdev
);
4524 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4525 mod_timer(&adapter
->phy_info_timer
,
4526 round_jiffies(jiffies
+ 2 * HZ
));
4528 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
4529 schedule_work(&adapter
->reset_task
);
4531 pm_schedule_suspend(netdev
->dev
.parent
,
4537 spin_lock(&adapter
->stats64_lock
);
4538 e1000e_update_stats(adapter
);
4540 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
4541 adapter
->tpt_old
= adapter
->stats
.tpt
;
4542 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
4543 adapter
->colc_old
= adapter
->stats
.colc
;
4545 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
4546 adapter
->gorc_old
= adapter
->stats
.gorc
;
4547 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
4548 adapter
->gotc_old
= adapter
->stats
.gotc
;
4549 spin_unlock(&adapter
->stats64_lock
);
4551 e1000e_update_adaptive(&adapter
->hw
);
4553 if (!netif_carrier_ok(netdev
) &&
4554 (e1000_desc_unused(tx_ring
) + 1 < tx_ring
->count
)) {
4556 * We've lost link, so the controller stops DMA,
4557 * but we've got queued Tx work that's never going
4558 * to get done, so reset controller to flush Tx.
4559 * (Do the reset outside of interrupt context).
4561 schedule_work(&adapter
->reset_task
);
4562 /* return immediately since reset is imminent */
4566 /* Simple mode for Interrupt Throttle Rate (ITR) */
4567 if (adapter
->itr_setting
== 4) {
4569 * Symmetric Tx/Rx gets a reduced ITR=2000;
4570 * Total asymmetrical Tx or Rx gets ITR=8000;
4571 * everyone else is between 2000-8000.
4573 u32 goc
= (adapter
->gotc
+ adapter
->gorc
) / 10000;
4574 u32 dif
= (adapter
->gotc
> adapter
->gorc
?
4575 adapter
->gotc
- adapter
->gorc
:
4576 adapter
->gorc
- adapter
->gotc
) / 10000;
4577 u32 itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
4579 ew32(ITR
, 1000000000 / (itr
* 256));
4582 /* Cause software interrupt to ensure Rx ring is cleaned */
4583 if (adapter
->msix_entries
)
4584 ew32(ICS
, adapter
->rx_ring
->ims_val
);
4586 ew32(ICS
, E1000_ICS_RXDMT0
);
4588 /* flush pending descriptors to memory before detecting Tx hang */
4589 e1000e_flush_descriptors(adapter
);
4591 /* Force detection of hung controller every watchdog period */
4592 adapter
->detect_tx_hung
= true;
4595 * With 82571 controllers, LAA may be overwritten due to controller
4596 * reset from the other port. Set the appropriate LAA in RAR[0]
4598 if (e1000e_get_laa_state_82571(hw
))
4599 hw
->mac
.ops
.rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
4601 if (adapter
->flags2
& FLAG2_CHECK_PHY_HANG
)
4602 e1000e_check_82574_phy_workaround(adapter
);
4604 /* Reset the timer */
4605 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4606 mod_timer(&adapter
->watchdog_timer
,
4607 round_jiffies(jiffies
+ 2 * HZ
));
4610 #define E1000_TX_FLAGS_CSUM 0x00000001
4611 #define E1000_TX_FLAGS_VLAN 0x00000002
4612 #define E1000_TX_FLAGS_TSO 0x00000004
4613 #define E1000_TX_FLAGS_IPV4 0x00000008
4614 #define E1000_TX_FLAGS_NO_FCS 0x00000010
4615 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
4616 #define E1000_TX_FLAGS_VLAN_SHIFT 16
4618 static int e1000_tso(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
)
4620 struct e1000_context_desc
*context_desc
;
4621 struct e1000_buffer
*buffer_info
;
4624 u16 ipcse
= 0, tucse
, mss
;
4625 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
4627 if (!skb_is_gso(skb
))
4630 if (skb_header_cloned(skb
)) {
4631 int err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
4637 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
4638 mss
= skb_shinfo(skb
)->gso_size
;
4639 if (skb
->protocol
== htons(ETH_P_IP
)) {
4640 struct iphdr
*iph
= ip_hdr(skb
);
4643 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
, iph
->daddr
,
4645 cmd_length
= E1000_TXD_CMD_IP
;
4646 ipcse
= skb_transport_offset(skb
) - 1;
4647 } else if (skb_is_gso_v6(skb
)) {
4648 ipv6_hdr(skb
)->payload_len
= 0;
4649 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
4650 &ipv6_hdr(skb
)->daddr
,
4654 ipcss
= skb_network_offset(skb
);
4655 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
4656 tucss
= skb_transport_offset(skb
);
4657 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
4660 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
4661 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
4663 i
= tx_ring
->next_to_use
;
4664 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
4665 buffer_info
= &tx_ring
->buffer_info
[i
];
4667 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
4668 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
4669 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
4670 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
4671 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
4672 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
4673 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
4674 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
4675 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
4677 buffer_info
->time_stamp
= jiffies
;
4678 buffer_info
->next_to_watch
= i
;
4681 if (i
== tx_ring
->count
)
4683 tx_ring
->next_to_use
= i
;
4688 static bool e1000_tx_csum(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
)
4690 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
4691 struct e1000_context_desc
*context_desc
;
4692 struct e1000_buffer
*buffer_info
;
4695 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
4698 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
4701 if (skb
->protocol
== cpu_to_be16(ETH_P_8021Q
))
4702 protocol
= vlan_eth_hdr(skb
)->h_vlan_encapsulated_proto
;
4704 protocol
= skb
->protocol
;
4707 case cpu_to_be16(ETH_P_IP
):
4708 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
4709 cmd_len
|= E1000_TXD_CMD_TCP
;
4711 case cpu_to_be16(ETH_P_IPV6
):
4712 /* XXX not handling all IPV6 headers */
4713 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
4714 cmd_len
|= E1000_TXD_CMD_TCP
;
4717 if (unlikely(net_ratelimit()))
4718 e_warn("checksum_partial proto=%x!\n",
4719 be16_to_cpu(protocol
));
4723 css
= skb_checksum_start_offset(skb
);
4725 i
= tx_ring
->next_to_use
;
4726 buffer_info
= &tx_ring
->buffer_info
[i
];
4727 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
4729 context_desc
->lower_setup
.ip_config
= 0;
4730 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
4731 context_desc
->upper_setup
.tcp_fields
.tucso
=
4732 css
+ skb
->csum_offset
;
4733 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
4734 context_desc
->tcp_seg_setup
.data
= 0;
4735 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
4737 buffer_info
->time_stamp
= jiffies
;
4738 buffer_info
->next_to_watch
= i
;
4741 if (i
== tx_ring
->count
)
4743 tx_ring
->next_to_use
= i
;
4748 #define E1000_MAX_PER_TXD 8192
4749 #define E1000_MAX_TXD_PWR 12
4751 static int e1000_tx_map(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
,
4752 unsigned int first
, unsigned int max_per_txd
,
4753 unsigned int nr_frags
, unsigned int mss
)
4755 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
4756 struct pci_dev
*pdev
= adapter
->pdev
;
4757 struct e1000_buffer
*buffer_info
;
4758 unsigned int len
= skb_headlen(skb
);
4759 unsigned int offset
= 0, size
, count
= 0, i
;
4760 unsigned int f
, bytecount
, segs
;
4762 i
= tx_ring
->next_to_use
;
4765 buffer_info
= &tx_ring
->buffer_info
[i
];
4766 size
= min(len
, max_per_txd
);
4768 buffer_info
->length
= size
;
4769 buffer_info
->time_stamp
= jiffies
;
4770 buffer_info
->next_to_watch
= i
;
4771 buffer_info
->dma
= dma_map_single(&pdev
->dev
,
4773 size
, DMA_TO_DEVICE
);
4774 buffer_info
->mapped_as_page
= false;
4775 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
4784 if (i
== tx_ring
->count
)
4789 for (f
= 0; f
< nr_frags
; f
++) {
4790 const struct skb_frag_struct
*frag
;
4792 frag
= &skb_shinfo(skb
)->frags
[f
];
4793 len
= skb_frag_size(frag
);
4798 if (i
== tx_ring
->count
)
4801 buffer_info
= &tx_ring
->buffer_info
[i
];
4802 size
= min(len
, max_per_txd
);
4804 buffer_info
->length
= size
;
4805 buffer_info
->time_stamp
= jiffies
;
4806 buffer_info
->next_to_watch
= i
;
4807 buffer_info
->dma
= skb_frag_dma_map(&pdev
->dev
, frag
,
4808 offset
, size
, DMA_TO_DEVICE
);
4809 buffer_info
->mapped_as_page
= true;
4810 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
4819 segs
= skb_shinfo(skb
)->gso_segs
? : 1;
4820 /* multiply data chunks by size of headers */
4821 bytecount
= ((segs
- 1) * skb_headlen(skb
)) + skb
->len
;
4823 tx_ring
->buffer_info
[i
].skb
= skb
;
4824 tx_ring
->buffer_info
[i
].segs
= segs
;
4825 tx_ring
->buffer_info
[i
].bytecount
= bytecount
;
4826 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
4831 dev_err(&pdev
->dev
, "Tx DMA map failed\n");
4832 buffer_info
->dma
= 0;
4838 i
+= tx_ring
->count
;
4840 buffer_info
= &tx_ring
->buffer_info
[i
];
4841 e1000_put_txbuf(tx_ring
, buffer_info
);
4847 static void e1000_tx_queue(struct e1000_ring
*tx_ring
, int tx_flags
, int count
)
4849 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
4850 struct e1000_tx_desc
*tx_desc
= NULL
;
4851 struct e1000_buffer
*buffer_info
;
4852 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
4855 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
4856 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
4858 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
4860 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
4861 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
4864 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
4865 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
4866 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
4869 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
4870 txd_lower
|= E1000_TXD_CMD_VLE
;
4871 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
4874 if (unlikely(tx_flags
& E1000_TX_FLAGS_NO_FCS
))
4875 txd_lower
&= ~(E1000_TXD_CMD_IFCS
);
4877 i
= tx_ring
->next_to_use
;
4880 buffer_info
= &tx_ring
->buffer_info
[i
];
4881 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
4882 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4883 tx_desc
->lower
.data
=
4884 cpu_to_le32(txd_lower
| buffer_info
->length
);
4885 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
4888 if (i
== tx_ring
->count
)
4890 } while (--count
> 0);
4892 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
4894 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */
4895 if (unlikely(tx_flags
& E1000_TX_FLAGS_NO_FCS
))
4896 tx_desc
->lower
.data
&= ~(cpu_to_le32(E1000_TXD_CMD_IFCS
));
4899 * Force memory writes to complete before letting h/w
4900 * know there are new descriptors to fetch. (Only
4901 * applicable for weak-ordered memory model archs,
4906 tx_ring
->next_to_use
= i
;
4908 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
4909 e1000e_update_tdt_wa(tx_ring
, i
);
4911 writel(i
, tx_ring
->tail
);
4914 * we need this if more than one processor can write to our tail
4915 * at a time, it synchronizes IO on IA64/Altix systems
4920 #define MINIMUM_DHCP_PACKET_SIZE 282
4921 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
4922 struct sk_buff
*skb
)
4924 struct e1000_hw
*hw
= &adapter
->hw
;
4927 if (vlan_tx_tag_present(skb
)) {
4928 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
4929 (adapter
->hw
.mng_cookie
.status
&
4930 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
4934 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
4937 if (((struct ethhdr
*) skb
->data
)->h_proto
!= htons(ETH_P_IP
))
4941 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+14);
4944 if (ip
->protocol
!= IPPROTO_UDP
)
4947 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
4948 if (ntohs(udp
->dest
) != 67)
4951 offset
= (u8
*)udp
+ 8 - skb
->data
;
4952 length
= skb
->len
- offset
;
4953 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
4959 static int __e1000_maybe_stop_tx(struct e1000_ring
*tx_ring
, int size
)
4961 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
4963 netif_stop_queue(adapter
->netdev
);
4965 * Herbert's original patch had:
4966 * smp_mb__after_netif_stop_queue();
4967 * but since that doesn't exist yet, just open code it.
4972 * We need to check again in a case another CPU has just
4973 * made room available.
4975 if (e1000_desc_unused(tx_ring
) < size
)
4979 netif_start_queue(adapter
->netdev
);
4980 ++adapter
->restart_queue
;
4984 static int e1000_maybe_stop_tx(struct e1000_ring
*tx_ring
, int size
)
4986 if (e1000_desc_unused(tx_ring
) >= size
)
4988 return __e1000_maybe_stop_tx(tx_ring
, size
);
4991 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1)
4992 static netdev_tx_t
e1000_xmit_frame(struct sk_buff
*skb
,
4993 struct net_device
*netdev
)
4995 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4996 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4998 unsigned int max_per_txd
= E1000_MAX_PER_TXD
;
4999 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
5000 unsigned int tx_flags
= 0;
5001 unsigned int len
= skb_headlen(skb
);
5002 unsigned int nr_frags
;
5008 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
5009 dev_kfree_skb_any(skb
);
5010 return NETDEV_TX_OK
;
5013 if (skb
->len
<= 0) {
5014 dev_kfree_skb_any(skb
);
5015 return NETDEV_TX_OK
;
5018 mss
= skb_shinfo(skb
)->gso_size
;
5020 * The controller does a simple calculation to
5021 * make sure there is enough room in the FIFO before
5022 * initiating the DMA for each buffer. The calc is:
5023 * 4 = ceil(buffer len/mss). To make sure we don't
5024 * overrun the FIFO, adjust the max buffer len if mss
5029 max_per_txd
= min(mss
<< 2, max_per_txd
);
5030 max_txd_pwr
= fls(max_per_txd
) - 1;
5033 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
5034 * points to just header, pull a few bytes of payload from
5035 * frags into skb->data
5037 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
5039 * we do this workaround for ES2LAN, but it is un-necessary,
5040 * avoiding it could save a lot of cycles
5042 if (skb
->data_len
&& (hdr_len
== len
)) {
5043 unsigned int pull_size
;
5045 pull_size
= min_t(unsigned int, 4, skb
->data_len
);
5046 if (!__pskb_pull_tail(skb
, pull_size
)) {
5047 e_err("__pskb_pull_tail failed.\n");
5048 dev_kfree_skb_any(skb
);
5049 return NETDEV_TX_OK
;
5051 len
= skb_headlen(skb
);
5055 /* reserve a descriptor for the offload context */
5056 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
5060 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
5062 nr_frags
= skb_shinfo(skb
)->nr_frags
;
5063 for (f
= 0; f
< nr_frags
; f
++)
5064 count
+= TXD_USE_COUNT(skb_frag_size(&skb_shinfo(skb
)->frags
[f
]),
5067 if (adapter
->hw
.mac
.tx_pkt_filtering
)
5068 e1000_transfer_dhcp_info(adapter
, skb
);
5071 * need: count + 2 desc gap to keep tail from touching
5072 * head, otherwise try next time
5074 if (e1000_maybe_stop_tx(tx_ring
, count
+ 2))
5075 return NETDEV_TX_BUSY
;
5077 if (vlan_tx_tag_present(skb
)) {
5078 tx_flags
|= E1000_TX_FLAGS_VLAN
;
5079 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
5082 first
= tx_ring
->next_to_use
;
5084 tso
= e1000_tso(tx_ring
, skb
);
5086 dev_kfree_skb_any(skb
);
5087 return NETDEV_TX_OK
;
5091 tx_flags
|= E1000_TX_FLAGS_TSO
;
5092 else if (e1000_tx_csum(tx_ring
, skb
))
5093 tx_flags
|= E1000_TX_FLAGS_CSUM
;
5096 * Old method was to assume IPv4 packet by default if TSO was enabled.
5097 * 82571 hardware supports TSO capabilities for IPv6 as well...
5098 * no longer assume, we must.
5100 if (skb
->protocol
== htons(ETH_P_IP
))
5101 tx_flags
|= E1000_TX_FLAGS_IPV4
;
5103 if (unlikely(skb
->no_fcs
))
5104 tx_flags
|= E1000_TX_FLAGS_NO_FCS
;
5106 /* if count is 0 then mapping error has occurred */
5107 count
= e1000_tx_map(tx_ring
, skb
, first
, max_per_txd
, nr_frags
, mss
);
5109 skb_tx_timestamp(skb
);
5111 netdev_sent_queue(netdev
, skb
->len
);
5112 e1000_tx_queue(tx_ring
, tx_flags
, count
);
5113 /* Make sure there is space in the ring for the next send. */
5114 e1000_maybe_stop_tx(tx_ring
, MAX_SKB_FRAGS
+ 2);
5117 dev_kfree_skb_any(skb
);
5118 tx_ring
->buffer_info
[first
].time_stamp
= 0;
5119 tx_ring
->next_to_use
= first
;
5122 return NETDEV_TX_OK
;
5126 * e1000_tx_timeout - Respond to a Tx Hang
5127 * @netdev: network interface device structure
5129 static void e1000_tx_timeout(struct net_device
*netdev
)
5131 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5133 /* Do the reset outside of interrupt context */
5134 adapter
->tx_timeout_count
++;
5135 schedule_work(&adapter
->reset_task
);
5138 static void e1000_reset_task(struct work_struct
*work
)
5140 struct e1000_adapter
*adapter
;
5141 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
5143 /* don't run the task if already down */
5144 if (test_bit(__E1000_DOWN
, &adapter
->state
))
5147 if (!((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
5148 (adapter
->flags
& FLAG_RX_RESTART_NOW
))) {
5149 e1000e_dump(adapter
);
5150 e_err("Reset adapter\n");
5152 e1000e_reinit_locked(adapter
);
5156 * e1000_get_stats64 - Get System Network Statistics
5157 * @netdev: network interface device structure
5158 * @stats: rtnl_link_stats64 pointer
5160 * Returns the address of the device statistics structure.
5162 struct rtnl_link_stats64
*e1000e_get_stats64(struct net_device
*netdev
,
5163 struct rtnl_link_stats64
*stats
)
5165 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5167 memset(stats
, 0, sizeof(struct rtnl_link_stats64
));
5168 spin_lock(&adapter
->stats64_lock
);
5169 e1000e_update_stats(adapter
);
5170 /* Fill out the OS statistics structure */
5171 stats
->rx_bytes
= adapter
->stats
.gorc
;
5172 stats
->rx_packets
= adapter
->stats
.gprc
;
5173 stats
->tx_bytes
= adapter
->stats
.gotc
;
5174 stats
->tx_packets
= adapter
->stats
.gptc
;
5175 stats
->multicast
= adapter
->stats
.mprc
;
5176 stats
->collisions
= adapter
->stats
.colc
;
5181 * RLEC on some newer hardware can be incorrect so build
5182 * our own version based on RUC and ROC
5184 stats
->rx_errors
= adapter
->stats
.rxerrc
+
5185 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
5186 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
5187 adapter
->stats
.cexterr
;
5188 stats
->rx_length_errors
= adapter
->stats
.ruc
+
5190 stats
->rx_crc_errors
= adapter
->stats
.crcerrs
;
5191 stats
->rx_frame_errors
= adapter
->stats
.algnerrc
;
5192 stats
->rx_missed_errors
= adapter
->stats
.mpc
;
5195 stats
->tx_errors
= adapter
->stats
.ecol
+
5196 adapter
->stats
.latecol
;
5197 stats
->tx_aborted_errors
= adapter
->stats
.ecol
;
5198 stats
->tx_window_errors
= adapter
->stats
.latecol
;
5199 stats
->tx_carrier_errors
= adapter
->stats
.tncrs
;
5201 /* Tx Dropped needs to be maintained elsewhere */
5203 spin_unlock(&adapter
->stats64_lock
);
5208 * e1000_change_mtu - Change the Maximum Transfer Unit
5209 * @netdev: network interface device structure
5210 * @new_mtu: new value for maximum frame size
5212 * Returns 0 on success, negative on failure
5214 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
5216 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5217 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
5219 /* Jumbo frame support */
5220 if ((max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) &&
5221 !(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
5222 e_err("Jumbo Frames not supported.\n");
5226 /* Supported frame sizes */
5227 if ((new_mtu
< ETH_ZLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
) ||
5228 (max_frame
> adapter
->max_hw_frame_size
)) {
5229 e_err("Unsupported MTU setting\n");
5233 /* Jumbo frame workaround on 82579 and newer requires CRC be stripped */
5234 if ((adapter
->hw
.mac
.type
>= e1000_pch2lan
) &&
5235 !(adapter
->flags2
& FLAG2_CRC_STRIPPING
) &&
5236 (new_mtu
> ETH_DATA_LEN
)) {
5237 e_err("Jumbo Frames not supported on this device when CRC stripping is disabled.\n");
5241 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
5242 usleep_range(1000, 2000);
5243 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
5244 adapter
->max_frame_size
= max_frame
;
5245 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
5246 netdev
->mtu
= new_mtu
;
5247 if (netif_running(netdev
))
5248 e1000e_down(adapter
);
5251 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
5252 * means we reserve 2 more, this pushes us to allocate from the next
5254 * i.e. RXBUFFER_2048 --> size-4096 slab
5255 * However with the new *_jumbo_rx* routines, jumbo receives will use
5259 if (max_frame
<= 2048)
5260 adapter
->rx_buffer_len
= 2048;
5262 adapter
->rx_buffer_len
= 4096;
5264 /* adjust allocation if LPE protects us, and we aren't using SBP */
5265 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
5266 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
5267 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
5270 if (netif_running(netdev
))
5273 e1000e_reset(adapter
);
5275 clear_bit(__E1000_RESETTING
, &adapter
->state
);
5280 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
5283 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5284 struct mii_ioctl_data
*data
= if_mii(ifr
);
5286 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
5291 data
->phy_id
= adapter
->hw
.phy
.addr
;
5294 e1000_phy_read_status(adapter
);
5296 switch (data
->reg_num
& 0x1F) {
5298 data
->val_out
= adapter
->phy_regs
.bmcr
;
5301 data
->val_out
= adapter
->phy_regs
.bmsr
;
5304 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
5307 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
5310 data
->val_out
= adapter
->phy_regs
.advertise
;
5313 data
->val_out
= adapter
->phy_regs
.lpa
;
5316 data
->val_out
= adapter
->phy_regs
.expansion
;
5319 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
5322 data
->val_out
= adapter
->phy_regs
.stat1000
;
5325 data
->val_out
= adapter
->phy_regs
.estatus
;
5338 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
5344 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
5350 static int e1000_init_phy_wakeup(struct e1000_adapter
*adapter
, u32 wufc
)
5352 struct e1000_hw
*hw
= &adapter
->hw
;
5354 u16 phy_reg
, wuc_enable
;
5357 /* copy MAC RARs to PHY RARs */
5358 e1000_copy_rx_addrs_to_phy_ich8lan(hw
);
5360 retval
= hw
->phy
.ops
.acquire(hw
);
5362 e_err("Could not acquire PHY\n");
5366 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */
5367 retval
= e1000_enable_phy_wakeup_reg_access_bm(hw
, &wuc_enable
);
5371 /* copy MAC MTA to PHY MTA - only needed for pchlan */
5372 for (i
= 0; i
< adapter
->hw
.mac
.mta_reg_count
; i
++) {
5373 mac_reg
= E1000_READ_REG_ARRAY(hw
, E1000_MTA
, i
);
5374 hw
->phy
.ops
.write_reg_page(hw
, BM_MTA(i
),
5375 (u16
)(mac_reg
& 0xFFFF));
5376 hw
->phy
.ops
.write_reg_page(hw
, BM_MTA(i
) + 1,
5377 (u16
)((mac_reg
>> 16) & 0xFFFF));
5380 /* configure PHY Rx Control register */
5381 hw
->phy
.ops
.read_reg_page(&adapter
->hw
, BM_RCTL
, &phy_reg
);
5382 mac_reg
= er32(RCTL
);
5383 if (mac_reg
& E1000_RCTL_UPE
)
5384 phy_reg
|= BM_RCTL_UPE
;
5385 if (mac_reg
& E1000_RCTL_MPE
)
5386 phy_reg
|= BM_RCTL_MPE
;
5387 phy_reg
&= ~(BM_RCTL_MO_MASK
);
5388 if (mac_reg
& E1000_RCTL_MO_3
)
5389 phy_reg
|= (((mac_reg
& E1000_RCTL_MO_3
) >> E1000_RCTL_MO_SHIFT
)
5390 << BM_RCTL_MO_SHIFT
);
5391 if (mac_reg
& E1000_RCTL_BAM
)
5392 phy_reg
|= BM_RCTL_BAM
;
5393 if (mac_reg
& E1000_RCTL_PMCF
)
5394 phy_reg
|= BM_RCTL_PMCF
;
5395 mac_reg
= er32(CTRL
);
5396 if (mac_reg
& E1000_CTRL_RFCE
)
5397 phy_reg
|= BM_RCTL_RFCE
;
5398 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_RCTL
, phy_reg
);
5400 /* enable PHY wakeup in MAC register */
5402 ew32(WUC
, E1000_WUC_PHY_WAKE
| E1000_WUC_PME_EN
);
5404 /* configure and enable PHY wakeup in PHY registers */
5405 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_WUFC
, wufc
);
5406 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_WUC
, E1000_WUC_PME_EN
);
5408 /* activate PHY wakeup */
5409 wuc_enable
|= BM_WUC_ENABLE_BIT
| BM_WUC_HOST_WU_BIT
;
5410 retval
= e1000_disable_phy_wakeup_reg_access_bm(hw
, &wuc_enable
);
5412 e_err("Could not set PHY Host Wakeup bit\n");
5414 hw
->phy
.ops
.release(hw
);
5419 static int __e1000_shutdown(struct pci_dev
*pdev
, bool *enable_wake
,
5422 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5423 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5424 struct e1000_hw
*hw
= &adapter
->hw
;
5425 u32 ctrl
, ctrl_ext
, rctl
, status
;
5426 /* Runtime suspend should only enable wakeup for link changes */
5427 u32 wufc
= runtime
? E1000_WUFC_LNKC
: adapter
->wol
;
5430 netif_device_detach(netdev
);
5432 if (netif_running(netdev
)) {
5433 int count
= E1000_CHECK_RESET_COUNT
;
5435 while (test_bit(__E1000_RESETTING
, &adapter
->state
) && count
--)
5436 usleep_range(10000, 20000);
5438 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
5439 e1000e_down(adapter
);
5440 e1000_free_irq(adapter
);
5442 e1000e_reset_interrupt_capability(adapter
);
5444 retval
= pci_save_state(pdev
);
5448 status
= er32(STATUS
);
5449 if (status
& E1000_STATUS_LU
)
5450 wufc
&= ~E1000_WUFC_LNKC
;
5453 e1000_setup_rctl(adapter
);
5454 e1000e_set_rx_mode(netdev
);
5456 /* turn on all-multi mode if wake on multicast is enabled */
5457 if (wufc
& E1000_WUFC_MC
) {
5459 rctl
|= E1000_RCTL_MPE
;
5464 /* advertise wake from D3Cold */
5465 #define E1000_CTRL_ADVD3WUC 0x00100000
5466 /* phy power management enable */
5467 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5468 ctrl
|= E1000_CTRL_ADVD3WUC
;
5469 if (!(adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
))
5470 ctrl
|= E1000_CTRL_EN_PHY_PWR_MGMT
;
5473 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
5474 adapter
->hw
.phy
.media_type
==
5475 e1000_media_type_internal_serdes
) {
5476 /* keep the laser running in D3 */
5477 ctrl_ext
= er32(CTRL_EXT
);
5478 ctrl_ext
|= E1000_CTRL_EXT_SDP3_DATA
;
5479 ew32(CTRL_EXT
, ctrl_ext
);
5482 if (adapter
->flags
& FLAG_IS_ICH
)
5483 e1000_suspend_workarounds_ich8lan(&adapter
->hw
);
5485 /* Allow time for pending master requests to run */
5486 e1000e_disable_pcie_master(&adapter
->hw
);
5488 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
5489 /* enable wakeup by the PHY */
5490 retval
= e1000_init_phy_wakeup(adapter
, wufc
);
5494 /* enable wakeup by the MAC */
5496 ew32(WUC
, E1000_WUC_PME_EN
);
5503 *enable_wake
= !!wufc
;
5505 /* make sure adapter isn't asleep if manageability is enabled */
5506 if ((adapter
->flags
& FLAG_MNG_PT_ENABLED
) ||
5507 (hw
->mac
.ops
.check_mng_mode(hw
)))
5508 *enable_wake
= true;
5510 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
)
5511 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
5514 * Release control of h/w to f/w. If f/w is AMT enabled, this
5515 * would have already happened in close and is redundant.
5517 e1000e_release_hw_control(adapter
);
5519 pci_disable_device(pdev
);
5524 static void e1000_power_off(struct pci_dev
*pdev
, bool sleep
, bool wake
)
5526 if (sleep
&& wake
) {
5527 pci_prepare_to_sleep(pdev
);
5531 pci_wake_from_d3(pdev
, wake
);
5532 pci_set_power_state(pdev
, PCI_D3hot
);
5535 static void e1000_complete_shutdown(struct pci_dev
*pdev
, bool sleep
,
5538 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5539 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5542 * The pci-e switch on some quad port adapters will report a
5543 * correctable error when the MAC transitions from D0 to D3. To
5544 * prevent this we need to mask off the correctable errors on the
5545 * downstream port of the pci-e switch.
5547 if (adapter
->flags
& FLAG_IS_QUAD_PORT
) {
5548 struct pci_dev
*us_dev
= pdev
->bus
->self
;
5549 int pos
= pci_pcie_cap(us_dev
);
5552 pci_read_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, &devctl
);
5553 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
,
5554 (devctl
& ~PCI_EXP_DEVCTL_CERE
));
5556 e1000_power_off(pdev
, sleep
, wake
);
5558 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, devctl
);
5560 e1000_power_off(pdev
, sleep
, wake
);
5564 #ifdef CONFIG_PCIEASPM
5565 static void __e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5567 pci_disable_link_state_locked(pdev
, state
);
5570 static void __e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5576 * Both device and parent should have the same ASPM setting.
5577 * Disable ASPM in downstream component first and then upstream.
5579 pos
= pci_pcie_cap(pdev
);
5580 pci_read_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, ®16
);
5582 pci_write_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, reg16
);
5584 if (!pdev
->bus
->self
)
5587 pos
= pci_pcie_cap(pdev
->bus
->self
);
5588 pci_read_config_word(pdev
->bus
->self
, pos
+ PCI_EXP_LNKCTL
, ®16
);
5590 pci_write_config_word(pdev
->bus
->self
, pos
+ PCI_EXP_LNKCTL
, reg16
);
5593 static void e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5595 dev_info(&pdev
->dev
, "Disabling ASPM %s %s\n",
5596 (state
& PCIE_LINK_STATE_L0S
) ? "L0s" : "",
5597 (state
& PCIE_LINK_STATE_L1
) ? "L1" : "");
5599 __e1000e_disable_aspm(pdev
, state
);
5603 static bool e1000e_pm_ready(struct e1000_adapter
*adapter
)
5605 return !!adapter
->tx_ring
->buffer_info
;
5608 static int __e1000_resume(struct pci_dev
*pdev
)
5610 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5611 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5612 struct e1000_hw
*hw
= &adapter
->hw
;
5613 u16 aspm_disable_flag
= 0;
5616 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
5617 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
5618 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5619 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
5620 if (aspm_disable_flag
)
5621 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
5623 pci_set_power_state(pdev
, PCI_D0
);
5624 pci_restore_state(pdev
);
5625 pci_save_state(pdev
);
5627 e1000e_set_interrupt_capability(adapter
);
5628 if (netif_running(netdev
)) {
5629 err
= e1000_request_irq(adapter
);
5634 if (hw
->mac
.type
>= e1000_pch2lan
)
5635 e1000_resume_workarounds_pchlan(&adapter
->hw
);
5637 e1000e_power_up_phy(adapter
);
5639 /* report the system wakeup cause from S3/S4 */
5640 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
5643 e1e_rphy(&adapter
->hw
, BM_WUS
, &phy_data
);
5645 e_info("PHY Wakeup cause - %s\n",
5646 phy_data
& E1000_WUS_EX
? "Unicast Packet" :
5647 phy_data
& E1000_WUS_MC
? "Multicast Packet" :
5648 phy_data
& E1000_WUS_BC
? "Broadcast Packet" :
5649 phy_data
& E1000_WUS_MAG
? "Magic Packet" :
5650 phy_data
& E1000_WUS_LNKC
?
5651 "Link Status Change" : "other");
5653 e1e_wphy(&adapter
->hw
, BM_WUS
, ~0);
5655 u32 wus
= er32(WUS
);
5657 e_info("MAC Wakeup cause - %s\n",
5658 wus
& E1000_WUS_EX
? "Unicast Packet" :
5659 wus
& E1000_WUS_MC
? "Multicast Packet" :
5660 wus
& E1000_WUS_BC
? "Broadcast Packet" :
5661 wus
& E1000_WUS_MAG
? "Magic Packet" :
5662 wus
& E1000_WUS_LNKC
? "Link Status Change" :
5668 e1000e_reset(adapter
);
5670 e1000_init_manageability_pt(adapter
);
5672 if (netif_running(netdev
))
5675 netif_device_attach(netdev
);
5678 * If the controller has AMT, do not set DRV_LOAD until the interface
5679 * is up. For all other cases, let the f/w know that the h/w is now
5680 * under the control of the driver.
5682 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5683 e1000e_get_hw_control(adapter
);
5688 #ifdef CONFIG_PM_SLEEP
5689 static int e1000_suspend(struct device
*dev
)
5691 struct pci_dev
*pdev
= to_pci_dev(dev
);
5695 retval
= __e1000_shutdown(pdev
, &wake
, false);
5697 e1000_complete_shutdown(pdev
, true, wake
);
5702 static int e1000_resume(struct device
*dev
)
5704 struct pci_dev
*pdev
= to_pci_dev(dev
);
5705 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5706 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5708 if (e1000e_pm_ready(adapter
))
5709 adapter
->idle_check
= true;
5711 return __e1000_resume(pdev
);
5713 #endif /* CONFIG_PM_SLEEP */
5715 #ifdef CONFIG_PM_RUNTIME
5716 static int e1000_runtime_suspend(struct device
*dev
)
5718 struct pci_dev
*pdev
= to_pci_dev(dev
);
5719 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5720 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5722 if (e1000e_pm_ready(adapter
)) {
5725 __e1000_shutdown(pdev
, &wake
, true);
5731 static int e1000_idle(struct device
*dev
)
5733 struct pci_dev
*pdev
= to_pci_dev(dev
);
5734 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5735 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5737 if (!e1000e_pm_ready(adapter
))
5740 if (adapter
->idle_check
) {
5741 adapter
->idle_check
= false;
5742 if (!e1000e_has_link(adapter
))
5743 pm_schedule_suspend(dev
, MSEC_PER_SEC
);
5749 static int e1000_runtime_resume(struct device
*dev
)
5751 struct pci_dev
*pdev
= to_pci_dev(dev
);
5752 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5753 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5755 if (!e1000e_pm_ready(adapter
))
5758 adapter
->idle_check
= !dev
->power
.runtime_auto
;
5759 return __e1000_resume(pdev
);
5761 #endif /* CONFIG_PM_RUNTIME */
5762 #endif /* CONFIG_PM */
5764 static void e1000_shutdown(struct pci_dev
*pdev
)
5768 __e1000_shutdown(pdev
, &wake
, false);
5770 if (system_state
== SYSTEM_POWER_OFF
)
5771 e1000_complete_shutdown(pdev
, false, wake
);
5774 #ifdef CONFIG_NET_POLL_CONTROLLER
5776 static irqreturn_t
e1000_intr_msix(int irq
, void *data
)
5778 struct net_device
*netdev
= data
;
5779 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5781 if (adapter
->msix_entries
) {
5782 int vector
, msix_irq
;
5785 msix_irq
= adapter
->msix_entries
[vector
].vector
;
5786 disable_irq(msix_irq
);
5787 e1000_intr_msix_rx(msix_irq
, netdev
);
5788 enable_irq(msix_irq
);
5791 msix_irq
= adapter
->msix_entries
[vector
].vector
;
5792 disable_irq(msix_irq
);
5793 e1000_intr_msix_tx(msix_irq
, netdev
);
5794 enable_irq(msix_irq
);
5797 msix_irq
= adapter
->msix_entries
[vector
].vector
;
5798 disable_irq(msix_irq
);
5799 e1000_msix_other(msix_irq
, netdev
);
5800 enable_irq(msix_irq
);
5807 * Polling 'interrupt' - used by things like netconsole to send skbs
5808 * without having to re-enable interrupts. It's not called while
5809 * the interrupt routine is executing.
5811 static void e1000_netpoll(struct net_device
*netdev
)
5813 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5815 switch (adapter
->int_mode
) {
5816 case E1000E_INT_MODE_MSIX
:
5817 e1000_intr_msix(adapter
->pdev
->irq
, netdev
);
5819 case E1000E_INT_MODE_MSI
:
5820 disable_irq(adapter
->pdev
->irq
);
5821 e1000_intr_msi(adapter
->pdev
->irq
, netdev
);
5822 enable_irq(adapter
->pdev
->irq
);
5824 default: /* E1000E_INT_MODE_LEGACY */
5825 disable_irq(adapter
->pdev
->irq
);
5826 e1000_intr(adapter
->pdev
->irq
, netdev
);
5827 enable_irq(adapter
->pdev
->irq
);
5834 * e1000_io_error_detected - called when PCI error is detected
5835 * @pdev: Pointer to PCI device
5836 * @state: The current pci connection state
5838 * This function is called after a PCI bus error affecting
5839 * this device has been detected.
5841 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
5842 pci_channel_state_t state
)
5844 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5845 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5847 netif_device_detach(netdev
);
5849 if (state
== pci_channel_io_perm_failure
)
5850 return PCI_ERS_RESULT_DISCONNECT
;
5852 if (netif_running(netdev
))
5853 e1000e_down(adapter
);
5854 pci_disable_device(pdev
);
5856 /* Request a slot slot reset. */
5857 return PCI_ERS_RESULT_NEED_RESET
;
5861 * e1000_io_slot_reset - called after the pci bus has been reset.
5862 * @pdev: Pointer to PCI device
5864 * Restart the card from scratch, as if from a cold-boot. Implementation
5865 * resembles the first-half of the e1000_resume routine.
5867 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
5869 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5870 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5871 struct e1000_hw
*hw
= &adapter
->hw
;
5872 u16 aspm_disable_flag
= 0;
5874 pci_ers_result_t result
;
5876 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
5877 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
5878 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5879 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
5880 if (aspm_disable_flag
)
5881 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
5883 err
= pci_enable_device_mem(pdev
);
5886 "Cannot re-enable PCI device after reset.\n");
5887 result
= PCI_ERS_RESULT_DISCONNECT
;
5889 pci_set_master(pdev
);
5890 pdev
->state_saved
= true;
5891 pci_restore_state(pdev
);
5893 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5894 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5896 e1000e_reset(adapter
);
5898 result
= PCI_ERS_RESULT_RECOVERED
;
5901 pci_cleanup_aer_uncorrect_error_status(pdev
);
5907 * e1000_io_resume - called when traffic can start flowing again.
5908 * @pdev: Pointer to PCI device
5910 * This callback is called when the error recovery driver tells us that
5911 * its OK to resume normal operation. Implementation resembles the
5912 * second-half of the e1000_resume routine.
5914 static void e1000_io_resume(struct pci_dev
*pdev
)
5916 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5917 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5919 e1000_init_manageability_pt(adapter
);
5921 if (netif_running(netdev
)) {
5922 if (e1000e_up(adapter
)) {
5924 "can't bring device back up after reset\n");
5929 netif_device_attach(netdev
);
5932 * If the controller has AMT, do not set DRV_LOAD until the interface
5933 * is up. For all other cases, let the f/w know that the h/w is now
5934 * under the control of the driver.
5936 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5937 e1000e_get_hw_control(adapter
);
5941 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
5943 struct e1000_hw
*hw
= &adapter
->hw
;
5944 struct net_device
*netdev
= adapter
->netdev
;
5946 u8 pba_str
[E1000_PBANUM_LENGTH
];
5948 /* print bus type/speed/width info */
5949 e_info("(PCI Express:2.5GT/s:%s) %pM\n",
5951 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
5955 e_info("Intel(R) PRO/%s Network Connection\n",
5956 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
5957 ret_val
= e1000_read_pba_string_generic(hw
, pba_str
,
5958 E1000_PBANUM_LENGTH
);
5960 strlcpy((char *)pba_str
, "Unknown", sizeof(pba_str
));
5961 e_info("MAC: %d, PHY: %d, PBA No: %s\n",
5962 hw
->mac
.type
, hw
->phy
.type
, pba_str
);
5965 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
5967 struct e1000_hw
*hw
= &adapter
->hw
;
5971 if (hw
->mac
.type
!= e1000_82573
)
5974 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
5976 if (!ret_val
&& (!(buf
& (1 << 0)))) {
5977 /* Deep Smart Power Down (DSPD) */
5978 dev_warn(&adapter
->pdev
->dev
,
5979 "Warning: detected DSPD enabled in EEPROM\n");
5983 static int e1000_set_features(struct net_device
*netdev
,
5984 netdev_features_t features
)
5986 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5987 netdev_features_t changed
= features
^ netdev
->features
;
5989 if (changed
& (NETIF_F_TSO
| NETIF_F_TSO6
))
5990 adapter
->flags
|= FLAG_TSO_FORCE
;
5992 if (!(changed
& (NETIF_F_HW_VLAN_RX
| NETIF_F_HW_VLAN_TX
|
5993 NETIF_F_RXCSUM
| NETIF_F_RXHASH
| NETIF_F_RXFCS
|
5997 if (changed
& NETIF_F_RXFCS
) {
5998 if (features
& NETIF_F_RXFCS
) {
5999 adapter
->flags2
&= ~FLAG2_CRC_STRIPPING
;
6001 /* We need to take it back to defaults, which might mean
6002 * stripping is still disabled at the adapter level.
6004 if (adapter
->flags2
& FLAG2_DFLT_CRC_STRIPPING
)
6005 adapter
->flags2
|= FLAG2_CRC_STRIPPING
;
6007 adapter
->flags2
&= ~FLAG2_CRC_STRIPPING
;
6011 netdev
->features
= features
;
6013 if (netif_running(netdev
))
6014 e1000e_reinit_locked(adapter
);
6016 e1000e_reset(adapter
);
6021 static const struct net_device_ops e1000e_netdev_ops
= {
6022 .ndo_open
= e1000_open
,
6023 .ndo_stop
= e1000_close
,
6024 .ndo_start_xmit
= e1000_xmit_frame
,
6025 .ndo_get_stats64
= e1000e_get_stats64
,
6026 .ndo_set_rx_mode
= e1000e_set_rx_mode
,
6027 .ndo_set_mac_address
= e1000_set_mac
,
6028 .ndo_change_mtu
= e1000_change_mtu
,
6029 .ndo_do_ioctl
= e1000_ioctl
,
6030 .ndo_tx_timeout
= e1000_tx_timeout
,
6031 .ndo_validate_addr
= eth_validate_addr
,
6033 .ndo_vlan_rx_add_vid
= e1000_vlan_rx_add_vid
,
6034 .ndo_vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
,
6035 #ifdef CONFIG_NET_POLL_CONTROLLER
6036 .ndo_poll_controller
= e1000_netpoll
,
6038 .ndo_set_features
= e1000_set_features
,
6042 * e1000_probe - Device Initialization Routine
6043 * @pdev: PCI device information struct
6044 * @ent: entry in e1000_pci_tbl
6046 * Returns 0 on success, negative on failure
6048 * e1000_probe initializes an adapter identified by a pci_dev structure.
6049 * The OS initialization, configuring of the adapter private structure,
6050 * and a hardware reset occur.
6052 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
6053 const struct pci_device_id
*ent
)
6055 struct net_device
*netdev
;
6056 struct e1000_adapter
*adapter
;
6057 struct e1000_hw
*hw
;
6058 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
6059 resource_size_t mmio_start
, mmio_len
;
6060 resource_size_t flash_start
, flash_len
;
6061 static int cards_found
;
6062 u16 aspm_disable_flag
= 0;
6063 int i
, err
, pci_using_dac
;
6064 u16 eeprom_data
= 0;
6065 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
6067 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
6068 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
6069 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L1
)
6070 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
6071 if (aspm_disable_flag
)
6072 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
6074 err
= pci_enable_device_mem(pdev
);
6079 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(64));
6081 err
= dma_set_coherent_mask(&pdev
->dev
, DMA_BIT_MASK(64));
6085 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(32));
6087 err
= dma_set_coherent_mask(&pdev
->dev
,
6090 dev_err(&pdev
->dev
, "No usable DMA configuration, aborting\n");
6096 err
= pci_request_selected_regions_exclusive(pdev
,
6097 pci_select_bars(pdev
, IORESOURCE_MEM
),
6098 e1000e_driver_name
);
6102 /* AER (Advanced Error Reporting) hooks */
6103 pci_enable_pcie_error_reporting(pdev
);
6105 pci_set_master(pdev
);
6106 /* PCI config space info */
6107 err
= pci_save_state(pdev
);
6109 goto err_alloc_etherdev
;
6112 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
6114 goto err_alloc_etherdev
;
6116 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
6118 netdev
->irq
= pdev
->irq
;
6120 pci_set_drvdata(pdev
, netdev
);
6121 adapter
= netdev_priv(netdev
);
6123 adapter
->netdev
= netdev
;
6124 adapter
->pdev
= pdev
;
6126 adapter
->pba
= ei
->pba
;
6127 adapter
->flags
= ei
->flags
;
6128 adapter
->flags2
= ei
->flags2
;
6129 adapter
->hw
.adapter
= adapter
;
6130 adapter
->hw
.mac
.type
= ei
->mac
;
6131 adapter
->max_hw_frame_size
= ei
->max_hw_frame_size
;
6132 adapter
->msg_enable
= netif_msg_init(debug
, DEFAULT_MSG_ENABLE
);
6134 mmio_start
= pci_resource_start(pdev
, 0);
6135 mmio_len
= pci_resource_len(pdev
, 0);
6138 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
6139 if (!adapter
->hw
.hw_addr
)
6142 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
6143 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
6144 flash_start
= pci_resource_start(pdev
, 1);
6145 flash_len
= pci_resource_len(pdev
, 1);
6146 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
6147 if (!adapter
->hw
.flash_address
)
6151 /* construct the net_device struct */
6152 netdev
->netdev_ops
= &e1000e_netdev_ops
;
6153 e1000e_set_ethtool_ops(netdev
);
6154 netdev
->watchdog_timeo
= 5 * HZ
;
6155 netif_napi_add(netdev
, &adapter
->napi
, e1000e_poll
, 64);
6156 strlcpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
));
6158 netdev
->mem_start
= mmio_start
;
6159 netdev
->mem_end
= mmio_start
+ mmio_len
;
6161 adapter
->bd_number
= cards_found
++;
6163 e1000e_check_options(adapter
);
6165 /* setup adapter struct */
6166 err
= e1000_sw_init(adapter
);
6170 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
6171 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
6172 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
6174 err
= ei
->get_variants(adapter
);
6178 if ((adapter
->flags
& FLAG_IS_ICH
) &&
6179 (adapter
->flags
& FLAG_READ_ONLY_NVM
))
6180 e1000e_write_protect_nvm_ich8lan(&adapter
->hw
);
6182 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
6184 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
6186 /* Copper options */
6187 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
6188 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
6189 adapter
->hw
.phy
.disable_polarity_correction
= 0;
6190 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
6193 if (hw
->phy
.ops
.check_reset_block
&& hw
->phy
.ops
.check_reset_block(hw
))
6194 e_info("PHY reset is blocked due to SOL/IDER session.\n");
6196 /* Set initial default active device features */
6197 netdev
->features
= (NETIF_F_SG
|
6198 NETIF_F_HW_VLAN_RX
|
6199 NETIF_F_HW_VLAN_TX
|
6206 /* Set user-changeable features (subset of all device features) */
6207 netdev
->hw_features
= netdev
->features
;
6208 netdev
->hw_features
|= NETIF_F_RXFCS
;
6209 netdev
->priv_flags
|= IFF_SUPP_NOFCS
;
6210 netdev
->hw_features
|= NETIF_F_RXALL
;
6212 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
6213 netdev
->features
|= NETIF_F_HW_VLAN_FILTER
;
6215 netdev
->vlan_features
|= (NETIF_F_SG
|
6220 netdev
->priv_flags
|= IFF_UNICAST_FLT
;
6222 if (pci_using_dac
) {
6223 netdev
->features
|= NETIF_F_HIGHDMA
;
6224 netdev
->vlan_features
|= NETIF_F_HIGHDMA
;
6227 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
6228 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
6231 * before reading the NVM, reset the controller to
6232 * put the device in a known good starting state
6234 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
6237 * systems with ASPM and others may see the checksum fail on the first
6238 * attempt. Let's give it a few tries
6241 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
6244 e_err("The NVM Checksum Is Not Valid\n");
6250 e1000_eeprom_checks(adapter
);
6252 /* copy the MAC address */
6253 if (e1000e_read_mac_addr(&adapter
->hw
))
6254 e_err("NVM Read Error while reading MAC address\n");
6256 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
6257 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
6259 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
6260 e_err("Invalid MAC Address: %pM\n", netdev
->perm_addr
);
6265 init_timer(&adapter
->watchdog_timer
);
6266 adapter
->watchdog_timer
.function
= e1000_watchdog
;
6267 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
6269 init_timer(&adapter
->phy_info_timer
);
6270 adapter
->phy_info_timer
.function
= e1000_update_phy_info
;
6271 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
6273 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
6274 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
6275 INIT_WORK(&adapter
->downshift_task
, e1000e_downshift_workaround
);
6276 INIT_WORK(&adapter
->update_phy_task
, e1000e_update_phy_task
);
6277 INIT_WORK(&adapter
->print_hang_task
, e1000_print_hw_hang
);
6279 /* Initialize link parameters. User can change them with ethtool */
6280 adapter
->hw
.mac
.autoneg
= 1;
6281 adapter
->fc_autoneg
= true;
6282 adapter
->hw
.fc
.requested_mode
= e1000_fc_default
;
6283 adapter
->hw
.fc
.current_mode
= e1000_fc_default
;
6284 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
6286 /* ring size defaults */
6287 adapter
->rx_ring
->count
= 256;
6288 adapter
->tx_ring
->count
= 256;
6291 * Initial Wake on LAN setting - If APM wake is enabled in
6292 * the EEPROM, enable the ACPI Magic Packet filter
6294 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
6295 /* APME bit in EEPROM is mapped to WUC.APME */
6296 eeprom_data
= er32(WUC
);
6297 eeprom_apme_mask
= E1000_WUC_APME
;
6298 if ((hw
->mac
.type
> e1000_ich10lan
) &&
6299 (eeprom_data
& E1000_WUC_PHY_WAKE
))
6300 adapter
->flags2
|= FLAG2_HAS_PHY_WAKEUP
;
6301 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
6302 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
6303 (adapter
->hw
.bus
.func
== 1))
6304 e1000_read_nvm(&adapter
->hw
, NVM_INIT_CONTROL3_PORT_B
,
6307 e1000_read_nvm(&adapter
->hw
, NVM_INIT_CONTROL3_PORT_A
,
6311 /* fetch WoL from EEPROM */
6312 if (eeprom_data
& eeprom_apme_mask
)
6313 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
6316 * now that we have the eeprom settings, apply the special cases
6317 * where the eeprom may be wrong or the board simply won't support
6318 * wake on lan on a particular port
6320 if (!(adapter
->flags
& FLAG_HAS_WOL
))
6321 adapter
->eeprom_wol
= 0;
6323 /* initialize the wol settings based on the eeprom settings */
6324 adapter
->wol
= adapter
->eeprom_wol
;
6325 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
6327 /* save off EEPROM version number */
6328 e1000_read_nvm(&adapter
->hw
, 5, 1, &adapter
->eeprom_vers
);
6330 /* reset the hardware with the new settings */
6331 e1000e_reset(adapter
);
6334 * If the controller has AMT, do not set DRV_LOAD until the interface
6335 * is up. For all other cases, let the f/w know that the h/w is now
6336 * under the control of the driver.
6338 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6339 e1000e_get_hw_control(adapter
);
6341 strlcpy(netdev
->name
, "eth%d", sizeof(netdev
->name
));
6342 err
= register_netdev(netdev
);
6346 /* carrier off reporting is important to ethtool even BEFORE open */
6347 netif_carrier_off(netdev
);
6349 e1000_print_device_info(adapter
);
6351 if (pci_dev_run_wake(pdev
))
6352 pm_runtime_put_noidle(&pdev
->dev
);
6357 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6358 e1000e_release_hw_control(adapter
);
6360 if (hw
->phy
.ops
.check_reset_block
&& !hw
->phy
.ops
.check_reset_block(hw
))
6361 e1000_phy_hw_reset(&adapter
->hw
);
6363 kfree(adapter
->tx_ring
);
6364 kfree(adapter
->rx_ring
);
6366 if (adapter
->hw
.flash_address
)
6367 iounmap(adapter
->hw
.flash_address
);
6368 e1000e_reset_interrupt_capability(adapter
);
6370 iounmap(adapter
->hw
.hw_addr
);
6372 free_netdev(netdev
);
6374 pci_release_selected_regions(pdev
,
6375 pci_select_bars(pdev
, IORESOURCE_MEM
));
6378 pci_disable_device(pdev
);
6383 * e1000_remove - Device Removal Routine
6384 * @pdev: PCI device information struct
6386 * e1000_remove is called by the PCI subsystem to alert the driver
6387 * that it should release a PCI device. The could be caused by a
6388 * Hot-Plug event, or because the driver is going to be removed from
6391 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
6393 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6394 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6395 bool down
= test_bit(__E1000_DOWN
, &adapter
->state
);
6398 * The timers may be rescheduled, so explicitly disable them
6399 * from being rescheduled.
6402 set_bit(__E1000_DOWN
, &adapter
->state
);
6403 del_timer_sync(&adapter
->watchdog_timer
);
6404 del_timer_sync(&adapter
->phy_info_timer
);
6406 cancel_work_sync(&adapter
->reset_task
);
6407 cancel_work_sync(&adapter
->watchdog_task
);
6408 cancel_work_sync(&adapter
->downshift_task
);
6409 cancel_work_sync(&adapter
->update_phy_task
);
6410 cancel_work_sync(&adapter
->print_hang_task
);
6412 if (!(netdev
->flags
& IFF_UP
))
6413 e1000_power_down_phy(adapter
);
6415 /* Don't lie to e1000_close() down the road. */
6417 clear_bit(__E1000_DOWN
, &adapter
->state
);
6418 unregister_netdev(netdev
);
6420 if (pci_dev_run_wake(pdev
))
6421 pm_runtime_get_noresume(&pdev
->dev
);
6424 * Release control of h/w to f/w. If f/w is AMT enabled, this
6425 * would have already happened in close and is redundant.
6427 e1000e_release_hw_control(adapter
);
6429 e1000e_reset_interrupt_capability(adapter
);
6430 kfree(adapter
->tx_ring
);
6431 kfree(adapter
->rx_ring
);
6433 iounmap(adapter
->hw
.hw_addr
);
6434 if (adapter
->hw
.flash_address
)
6435 iounmap(adapter
->hw
.flash_address
);
6436 pci_release_selected_regions(pdev
,
6437 pci_select_bars(pdev
, IORESOURCE_MEM
));
6439 free_netdev(netdev
);
6442 pci_disable_pcie_error_reporting(pdev
);
6444 pci_disable_device(pdev
);
6447 /* PCI Error Recovery (ERS) */
6448 static struct pci_error_handlers e1000_err_handler
= {
6449 .error_detected
= e1000_io_error_detected
,
6450 .slot_reset
= e1000_io_slot_reset
,
6451 .resume
= e1000_io_resume
,
6454 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl
) = {
6455 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
6456 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
6457 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
6458 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
), board_82571
},
6459 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
6460 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
6461 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
6462 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
6463 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
6465 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
6466 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
6467 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
6468 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
6470 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
6471 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
6472 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
6474 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574L
), board_82574
},
6475 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574LA
), board_82574
},
6476 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82583V
), board_82583
},
6478 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
6479 board_80003es2lan
},
6480 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
6481 board_80003es2lan
},
6482 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
6483 board_80003es2lan
},
6484 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
6485 board_80003es2lan
},
6487 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
6488 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
6489 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
6490 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
6491 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
6492 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
6493 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
6494 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_82567V_3
), board_ich8lan
},
6496 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
6497 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
6498 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
6499 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
6500 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
6501 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_BM
), board_ich9lan
},
6502 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
6503 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
6504 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
6506 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
6507 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
6508 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
6510 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LM
), board_ich10lan
},
6511 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LF
), board_ich10lan
},
6512 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_V
), board_ich10lan
},
6514 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LM
), board_pchlan
},
6515 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LC
), board_pchlan
},
6516 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DM
), board_pchlan
},
6517 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DC
), board_pchlan
},
6519 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_LM
), board_pch2lan
},
6520 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_V
), board_pch2lan
},
6522 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPT_I217_LM
), board_pch_lpt
},
6523 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPT_I217_V
), board_pch_lpt
},
6525 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */
6527 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
6530 static const struct dev_pm_ops e1000_pm_ops
= {
6531 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend
, e1000_resume
)
6532 SET_RUNTIME_PM_OPS(e1000_runtime_suspend
,
6533 e1000_runtime_resume
, e1000_idle
)
6537 /* PCI Device API Driver */
6538 static struct pci_driver e1000_driver
= {
6539 .name
= e1000e_driver_name
,
6540 .id_table
= e1000_pci_tbl
,
6541 .probe
= e1000_probe
,
6542 .remove
= __devexit_p(e1000_remove
),
6545 .pm
= &e1000_pm_ops
,
6548 .shutdown
= e1000_shutdown
,
6549 .err_handler
= &e1000_err_handler
6553 * e1000_init_module - Driver Registration Routine
6555 * e1000_init_module is the first routine called when the driver is
6556 * loaded. All it does is register with the PCI subsystem.
6558 static int __init
e1000_init_module(void)
6561 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
6562 e1000e_driver_version
);
6563 pr_info("Copyright(c) 1999 - 2012 Intel Corporation.\n");
6564 ret
= pci_register_driver(&e1000_driver
);
6568 module_init(e1000_init_module
);
6571 * e1000_exit_module - Driver Exit Cleanup Routine
6573 * e1000_exit_module is called just before the driver is removed
6576 static void __exit
e1000_exit_module(void)
6578 pci_unregister_driver(&e1000_driver
);
6580 module_exit(e1000_exit_module
);
6583 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
6584 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
6585 MODULE_LICENSE("GPL");
6586 MODULE_VERSION(DRV_VERSION
);