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 "1.9.5" 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
,
84 struct e1000_reg_info
{
89 #define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */
90 #define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */
91 #define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */
92 #define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */
93 #define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */
95 #define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */
96 #define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */
97 #define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */
98 #define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */
99 #define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */
101 static const struct e1000_reg_info e1000_reg_info_tbl
[] = {
103 /* General Registers */
104 {E1000_CTRL
, "CTRL"},
105 {E1000_STATUS
, "STATUS"},
106 {E1000_CTRL_EXT
, "CTRL_EXT"},
108 /* Interrupt Registers */
112 {E1000_RCTL
, "RCTL"},
113 {E1000_RDLEN
, "RDLEN"},
116 {E1000_RDTR
, "RDTR"},
117 {E1000_RXDCTL(0), "RXDCTL"},
119 {E1000_RDBAL
, "RDBAL"},
120 {E1000_RDBAH
, "RDBAH"},
121 {E1000_RDFH
, "RDFH"},
122 {E1000_RDFT
, "RDFT"},
123 {E1000_RDFHS
, "RDFHS"},
124 {E1000_RDFTS
, "RDFTS"},
125 {E1000_RDFPC
, "RDFPC"},
128 {E1000_TCTL
, "TCTL"},
129 {E1000_TDBAL
, "TDBAL"},
130 {E1000_TDBAH
, "TDBAH"},
131 {E1000_TDLEN
, "TDLEN"},
134 {E1000_TIDV
, "TIDV"},
135 {E1000_TXDCTL(0), "TXDCTL"},
136 {E1000_TADV
, "TADV"},
137 {E1000_TARC(0), "TARC"},
138 {E1000_TDFH
, "TDFH"},
139 {E1000_TDFT
, "TDFT"},
140 {E1000_TDFHS
, "TDFHS"},
141 {E1000_TDFTS
, "TDFTS"},
142 {E1000_TDFPC
, "TDFPC"},
144 /* List Terminator */
149 * e1000_regdump - register printout routine
151 static void e1000_regdump(struct e1000_hw
*hw
, struct e1000_reg_info
*reginfo
)
157 switch (reginfo
->ofs
) {
158 case E1000_RXDCTL(0):
159 for (n
= 0; n
< 2; n
++)
160 regs
[n
] = __er32(hw
, E1000_RXDCTL(n
));
162 case E1000_TXDCTL(0):
163 for (n
= 0; n
< 2; n
++)
164 regs
[n
] = __er32(hw
, E1000_TXDCTL(n
));
167 for (n
= 0; n
< 2; n
++)
168 regs
[n
] = __er32(hw
, E1000_TARC(n
));
171 pr_info("%-15s %08x\n",
172 reginfo
->name
, __er32(hw
, reginfo
->ofs
));
176 snprintf(rname
, 16, "%s%s", reginfo
->name
, "[0-1]");
177 pr_info("%-15s %08x %08x\n", rname
, regs
[0], regs
[1]);
181 * e1000e_dump - Print registers, Tx-ring and Rx-ring
183 static void e1000e_dump(struct e1000_adapter
*adapter
)
185 struct net_device
*netdev
= adapter
->netdev
;
186 struct e1000_hw
*hw
= &adapter
->hw
;
187 struct e1000_reg_info
*reginfo
;
188 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
189 struct e1000_tx_desc
*tx_desc
;
194 struct e1000_buffer
*buffer_info
;
195 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
196 union e1000_rx_desc_packet_split
*rx_desc_ps
;
197 union e1000_rx_desc_extended
*rx_desc
;
207 if (!netif_msg_hw(adapter
))
210 /* Print netdevice Info */
212 dev_info(&adapter
->pdev
->dev
, "Net device Info\n");
213 pr_info("Device Name state trans_start last_rx\n");
214 pr_info("%-15s %016lX %016lX %016lX\n",
215 netdev
->name
, netdev
->state
, netdev
->trans_start
,
219 /* Print Registers */
220 dev_info(&adapter
->pdev
->dev
, "Register Dump\n");
221 pr_info(" Register Name Value\n");
222 for (reginfo
= (struct e1000_reg_info
*)e1000_reg_info_tbl
;
223 reginfo
->name
; reginfo
++) {
224 e1000_regdump(hw
, reginfo
);
227 /* Print Tx Ring Summary */
228 if (!netdev
|| !netif_running(netdev
))
231 dev_info(&adapter
->pdev
->dev
, "Tx Ring Summary\n");
232 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
233 buffer_info
= &tx_ring
->buffer_info
[tx_ring
->next_to_clean
];
234 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n",
235 0, tx_ring
->next_to_use
, tx_ring
->next_to_clean
,
236 (unsigned long long)buffer_info
->dma
,
238 buffer_info
->next_to_watch
,
239 (unsigned long long)buffer_info
->time_stamp
);
242 if (!netif_msg_tx_done(adapter
))
243 goto rx_ring_summary
;
245 dev_info(&adapter
->pdev
->dev
, "Tx Ring Dump\n");
247 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
249 * Legacy Transmit Descriptor
250 * +--------------------------------------------------------------+
251 * 0 | Buffer Address [63:0] (Reserved on Write Back) |
252 * +--------------------------------------------------------------+
253 * 8 | Special | CSS | Status | CMD | CSO | Length |
254 * +--------------------------------------------------------------+
255 * 63 48 47 36 35 32 31 24 23 16 15 0
257 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
258 * 63 48 47 40 39 32 31 16 15 8 7 0
259 * +----------------------------------------------------------------+
260 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
261 * +----------------------------------------------------------------+
262 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
263 * +----------------------------------------------------------------+
264 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
266 * Extended Data Descriptor (DTYP=0x1)
267 * +----------------------------------------------------------------+
268 * 0 | Buffer Address [63:0] |
269 * +----------------------------------------------------------------+
270 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
271 * +----------------------------------------------------------------+
272 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
274 pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n");
275 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n");
276 pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Data format\n");
277 for (i
= 0; tx_ring
->desc
&& (i
< tx_ring
->count
); i
++) {
278 const char *next_desc
;
279 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
280 buffer_info
= &tx_ring
->buffer_info
[i
];
281 u0
= (struct my_u0
*)tx_desc
;
282 if (i
== tx_ring
->next_to_use
&& i
== tx_ring
->next_to_clean
)
283 next_desc
= " NTC/U";
284 else if (i
== tx_ring
->next_to_use
)
286 else if (i
== tx_ring
->next_to_clean
)
290 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n",
291 (!(le64_to_cpu(u0
->b
) & (1 << 29)) ? 'l' :
292 ((le64_to_cpu(u0
->b
) & (1 << 20)) ? 'd' : 'c')),
294 (unsigned long long)le64_to_cpu(u0
->a
),
295 (unsigned long long)le64_to_cpu(u0
->b
),
296 (unsigned long long)buffer_info
->dma
,
297 buffer_info
->length
, buffer_info
->next_to_watch
,
298 (unsigned long long)buffer_info
->time_stamp
,
299 buffer_info
->skb
, next_desc
);
301 if (netif_msg_pktdata(adapter
) && buffer_info
->dma
!= 0)
302 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_ADDRESS
,
303 16, 1, phys_to_virt(buffer_info
->dma
),
304 buffer_info
->length
, true);
307 /* Print Rx Ring Summary */
309 dev_info(&adapter
->pdev
->dev
, "Rx Ring Summary\n");
310 pr_info("Queue [NTU] [NTC]\n");
311 pr_info(" %5d %5X %5X\n",
312 0, rx_ring
->next_to_use
, rx_ring
->next_to_clean
);
315 if (!netif_msg_rx_status(adapter
))
318 dev_info(&adapter
->pdev
->dev
, "Rx Ring Dump\n");
319 switch (adapter
->rx_ps_pages
) {
323 /* [Extended] Packet Split Receive Descriptor Format
325 * +-----------------------------------------------------+
326 * 0 | Buffer Address 0 [63:0] |
327 * +-----------------------------------------------------+
328 * 8 | Buffer Address 1 [63:0] |
329 * +-----------------------------------------------------+
330 * 16 | Buffer Address 2 [63:0] |
331 * +-----------------------------------------------------+
332 * 24 | Buffer Address 3 [63:0] |
333 * +-----------------------------------------------------+
335 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");
336 /* [Extended] Receive Descriptor (Write-Back) Format
338 * 63 48 47 32 31 13 12 8 7 4 3 0
339 * +------------------------------------------------------+
340 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
341 * | Checksum | Ident | | Queue | | Type |
342 * +------------------------------------------------------+
343 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
344 * +------------------------------------------------------+
345 * 63 48 47 32 31 20 19 0
347 pr_info("RWB[desc] [ck ipid mrqhsh] [vl l0 ee es] [ l3 l2 l1 hs] [reserved ] ---------------- [bi->skb] <-- Ext Rx Write-Back format\n");
348 for (i
= 0; i
< rx_ring
->count
; i
++) {
349 const char *next_desc
;
350 buffer_info
= &rx_ring
->buffer_info
[i
];
351 rx_desc_ps
= E1000_RX_DESC_PS(*rx_ring
, i
);
352 u1
= (struct my_u1
*)rx_desc_ps
;
354 le32_to_cpu(rx_desc_ps
->wb
.middle
.status_error
);
356 if (i
== rx_ring
->next_to_use
)
358 else if (i
== rx_ring
->next_to_clean
)
363 if (staterr
& E1000_RXD_STAT_DD
) {
364 /* Descriptor Done */
365 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n",
367 (unsigned long long)le64_to_cpu(u1
->a
),
368 (unsigned long long)le64_to_cpu(u1
->b
),
369 (unsigned long long)le64_to_cpu(u1
->c
),
370 (unsigned long long)le64_to_cpu(u1
->d
),
371 buffer_info
->skb
, next_desc
);
373 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n",
375 (unsigned long long)le64_to_cpu(u1
->a
),
376 (unsigned long long)le64_to_cpu(u1
->b
),
377 (unsigned long long)le64_to_cpu(u1
->c
),
378 (unsigned long long)le64_to_cpu(u1
->d
),
379 (unsigned long long)buffer_info
->dma
,
380 buffer_info
->skb
, next_desc
);
382 if (netif_msg_pktdata(adapter
))
383 print_hex_dump(KERN_INFO
, "",
384 DUMP_PREFIX_ADDRESS
, 16, 1,
385 phys_to_virt(buffer_info
->dma
),
386 adapter
->rx_ps_bsize0
, true);
392 /* Extended Receive Descriptor (Read) Format
394 * +-----------------------------------------------------+
395 * 0 | Buffer Address [63:0] |
396 * +-----------------------------------------------------+
398 * +-----------------------------------------------------+
400 pr_info("R [desc] [buf addr 63:0 ] [reserved 63:0 ] [bi->dma ] [bi->skb] <-- Ext (Read) format\n");
401 /* Extended Receive Descriptor (Write-Back) Format
403 * 63 48 47 32 31 24 23 4 3 0
404 * +------------------------------------------------------+
406 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS |
407 * | Packet | IP | | | Type |
408 * | Checksum | Ident | | | |
409 * +------------------------------------------------------+
410 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
411 * +------------------------------------------------------+
412 * 63 48 47 32 31 20 19 0
414 pr_info("RWB[desc] [cs ipid mrq] [vt ln xe xs] [bi->skb] <-- Ext (Write-Back) format\n");
416 for (i
= 0; i
< rx_ring
->count
; i
++) {
417 const char *next_desc
;
419 buffer_info
= &rx_ring
->buffer_info
[i
];
420 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
421 u1
= (struct my_u1
*)rx_desc
;
422 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
424 if (i
== rx_ring
->next_to_use
)
426 else if (i
== rx_ring
->next_to_clean
)
431 if (staterr
& E1000_RXD_STAT_DD
) {
432 /* Descriptor Done */
433 pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n",
435 (unsigned long long)le64_to_cpu(u1
->a
),
436 (unsigned long long)le64_to_cpu(u1
->b
),
437 buffer_info
->skb
, next_desc
);
439 pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n",
441 (unsigned long long)le64_to_cpu(u1
->a
),
442 (unsigned long long)le64_to_cpu(u1
->b
),
443 (unsigned long long)buffer_info
->dma
,
444 buffer_info
->skb
, next_desc
);
446 if (netif_msg_pktdata(adapter
))
447 print_hex_dump(KERN_INFO
, "",
448 DUMP_PREFIX_ADDRESS
, 16,
452 adapter
->rx_buffer_len
,
460 * e1000_desc_unused - calculate if we have unused descriptors
462 static int e1000_desc_unused(struct e1000_ring
*ring
)
464 if (ring
->next_to_clean
> ring
->next_to_use
)
465 return ring
->next_to_clean
- ring
->next_to_use
- 1;
467 return ring
->count
+ ring
->next_to_clean
- ring
->next_to_use
- 1;
471 * e1000_receive_skb - helper function to handle Rx indications
472 * @adapter: board private structure
473 * @status: descriptor status field as written by hardware
474 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
475 * @skb: pointer to sk_buff to be indicated to stack
477 static void e1000_receive_skb(struct e1000_adapter
*adapter
,
478 struct net_device
*netdev
, struct sk_buff
*skb
,
479 u8 status
, __le16 vlan
)
481 u16 tag
= le16_to_cpu(vlan
);
482 skb
->protocol
= eth_type_trans(skb
, netdev
);
484 if (status
& E1000_RXD_STAT_VP
)
485 __vlan_hwaccel_put_tag(skb
, tag
);
487 napi_gro_receive(&adapter
->napi
, skb
);
491 * e1000_rx_checksum - Receive Checksum Offload
492 * @adapter: board private structure
493 * @status_err: receive descriptor status and error fields
494 * @csum: receive descriptor csum field
495 * @sk_buff: socket buffer with received data
497 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
498 __le16 csum
, struct sk_buff
*skb
)
500 u16 status
= (u16
)status_err
;
501 u8 errors
= (u8
)(status_err
>> 24);
503 skb_checksum_none_assert(skb
);
505 /* Rx checksum disabled */
506 if (!(adapter
->netdev
->features
& NETIF_F_RXCSUM
))
509 /* Ignore Checksum bit is set */
510 if (status
& E1000_RXD_STAT_IXSM
)
513 /* TCP/UDP checksum error bit is set */
514 if (errors
& E1000_RXD_ERR_TCPE
) {
515 /* let the stack verify checksum errors */
516 adapter
->hw_csum_err
++;
520 /* TCP/UDP Checksum has not been calculated */
521 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
524 /* It must be a TCP or UDP packet with a valid checksum */
525 if (status
& E1000_RXD_STAT_TCPCS
) {
526 /* TCP checksum is good */
527 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
530 * IP fragment with UDP payload
531 * Hardware complements the payload checksum, so we undo it
532 * and then put the value in host order for further stack use.
534 __sum16 sum
= (__force __sum16
)swab16((__force u16
)csum
);
535 skb
->csum
= csum_unfold(~sum
);
536 skb
->ip_summed
= CHECKSUM_COMPLETE
;
538 adapter
->hw_csum_good
++;
542 * e1000e_update_tail_wa - helper function for e1000e_update_[rt]dt_wa()
543 * @hw: pointer to the HW structure
544 * @tail: address of tail descriptor register
545 * @i: value to write to tail descriptor register
547 * When updating the tail register, the ME could be accessing Host CSR
548 * registers at the same time. Normally, this is handled in h/w by an
549 * arbiter but on some parts there is a bug that acknowledges Host accesses
550 * later than it should which could result in the descriptor register to
551 * have an incorrect value. Workaround this by checking the FWSM register
552 * which has bit 24 set while ME is accessing Host CSR registers, wait
553 * if it is set and try again a number of times.
555 static inline s32
e1000e_update_tail_wa(struct e1000_hw
*hw
, void __iomem
*tail
,
560 while ((j
++ < E1000_ICH_FWSM_PCIM2PCI_COUNT
) &&
561 (er32(FWSM
) & E1000_ICH_FWSM_PCIM2PCI
))
566 if ((j
== E1000_ICH_FWSM_PCIM2PCI_COUNT
) && (i
!= readl(tail
)))
567 return E1000_ERR_SWFW_SYNC
;
572 static void e1000e_update_rdt_wa(struct e1000_ring
*rx_ring
, unsigned int i
)
574 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
575 struct e1000_hw
*hw
= &adapter
->hw
;
577 if (e1000e_update_tail_wa(hw
, rx_ring
->tail
, i
)) {
578 u32 rctl
= er32(RCTL
);
579 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
580 e_err("ME firmware caused invalid RDT - resetting\n");
581 schedule_work(&adapter
->reset_task
);
585 static void e1000e_update_tdt_wa(struct e1000_ring
*tx_ring
, unsigned int i
)
587 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
588 struct e1000_hw
*hw
= &adapter
->hw
;
590 if (e1000e_update_tail_wa(hw
, tx_ring
->tail
, i
)) {
591 u32 tctl
= er32(TCTL
);
592 ew32(TCTL
, tctl
& ~E1000_TCTL_EN
);
593 e_err("ME firmware caused invalid TDT - resetting\n");
594 schedule_work(&adapter
->reset_task
);
599 * e1000_alloc_rx_buffers - Replace used receive buffers
600 * @rx_ring: Rx descriptor ring
602 static void e1000_alloc_rx_buffers(struct e1000_ring
*rx_ring
,
603 int cleaned_count
, gfp_t gfp
)
605 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
606 struct net_device
*netdev
= adapter
->netdev
;
607 struct pci_dev
*pdev
= adapter
->pdev
;
608 union e1000_rx_desc_extended
*rx_desc
;
609 struct e1000_buffer
*buffer_info
;
612 unsigned int bufsz
= adapter
->rx_buffer_len
;
614 i
= rx_ring
->next_to_use
;
615 buffer_info
= &rx_ring
->buffer_info
[i
];
617 while (cleaned_count
--) {
618 skb
= buffer_info
->skb
;
624 skb
= __netdev_alloc_skb_ip_align(netdev
, bufsz
, gfp
);
626 /* Better luck next round */
627 adapter
->alloc_rx_buff_failed
++;
631 buffer_info
->skb
= skb
;
633 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
634 adapter
->rx_buffer_len
,
636 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
637 dev_err(&pdev
->dev
, "Rx DMA map failed\n");
638 adapter
->rx_dma_failed
++;
642 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
643 rx_desc
->read
.buffer_addr
= cpu_to_le64(buffer_info
->dma
);
645 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
647 * Force memory writes to complete before letting h/w
648 * know there are new descriptors to fetch. (Only
649 * applicable for weak-ordered memory model archs,
653 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
654 e1000e_update_rdt_wa(rx_ring
, i
);
656 writel(i
, rx_ring
->tail
);
659 if (i
== rx_ring
->count
)
661 buffer_info
= &rx_ring
->buffer_info
[i
];
664 rx_ring
->next_to_use
= i
;
668 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
669 * @rx_ring: Rx descriptor ring
671 static void e1000_alloc_rx_buffers_ps(struct e1000_ring
*rx_ring
,
672 int cleaned_count
, gfp_t gfp
)
674 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
675 struct net_device
*netdev
= adapter
->netdev
;
676 struct pci_dev
*pdev
= adapter
->pdev
;
677 union e1000_rx_desc_packet_split
*rx_desc
;
678 struct e1000_buffer
*buffer_info
;
679 struct e1000_ps_page
*ps_page
;
683 i
= rx_ring
->next_to_use
;
684 buffer_info
= &rx_ring
->buffer_info
[i
];
686 while (cleaned_count
--) {
687 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
689 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
690 ps_page
= &buffer_info
->ps_pages
[j
];
691 if (j
>= adapter
->rx_ps_pages
) {
692 /* all unused desc entries get hw null ptr */
693 rx_desc
->read
.buffer_addr
[j
+ 1] =
697 if (!ps_page
->page
) {
698 ps_page
->page
= alloc_page(gfp
);
699 if (!ps_page
->page
) {
700 adapter
->alloc_rx_buff_failed
++;
703 ps_page
->dma
= dma_map_page(&pdev
->dev
,
707 if (dma_mapping_error(&pdev
->dev
,
709 dev_err(&adapter
->pdev
->dev
,
710 "Rx DMA page map failed\n");
711 adapter
->rx_dma_failed
++;
716 * Refresh the desc even if buffer_addrs
717 * didn't change because each write-back
720 rx_desc
->read
.buffer_addr
[j
+ 1] =
721 cpu_to_le64(ps_page
->dma
);
724 skb
= __netdev_alloc_skb_ip_align(netdev
,
725 adapter
->rx_ps_bsize0
,
729 adapter
->alloc_rx_buff_failed
++;
733 buffer_info
->skb
= skb
;
734 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
735 adapter
->rx_ps_bsize0
,
737 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
738 dev_err(&pdev
->dev
, "Rx DMA map failed\n");
739 adapter
->rx_dma_failed
++;
741 dev_kfree_skb_any(skb
);
742 buffer_info
->skb
= NULL
;
746 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
748 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
750 * Force memory writes to complete before letting h/w
751 * know there are new descriptors to fetch. (Only
752 * applicable for weak-ordered memory model archs,
756 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
757 e1000e_update_rdt_wa(rx_ring
, i
<< 1);
759 writel(i
<< 1, rx_ring
->tail
);
763 if (i
== rx_ring
->count
)
765 buffer_info
= &rx_ring
->buffer_info
[i
];
769 rx_ring
->next_to_use
= i
;
773 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
774 * @rx_ring: Rx descriptor ring
775 * @cleaned_count: number of buffers to allocate this pass
778 static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring
*rx_ring
,
779 int cleaned_count
, gfp_t gfp
)
781 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
782 struct net_device
*netdev
= adapter
->netdev
;
783 struct pci_dev
*pdev
= adapter
->pdev
;
784 union e1000_rx_desc_extended
*rx_desc
;
785 struct e1000_buffer
*buffer_info
;
788 unsigned int bufsz
= 256 - 16 /* for skb_reserve */;
790 i
= rx_ring
->next_to_use
;
791 buffer_info
= &rx_ring
->buffer_info
[i
];
793 while (cleaned_count
--) {
794 skb
= buffer_info
->skb
;
800 skb
= __netdev_alloc_skb_ip_align(netdev
, bufsz
, gfp
);
801 if (unlikely(!skb
)) {
802 /* Better luck next round */
803 adapter
->alloc_rx_buff_failed
++;
807 buffer_info
->skb
= skb
;
809 /* allocate a new page if necessary */
810 if (!buffer_info
->page
) {
811 buffer_info
->page
= alloc_page(gfp
);
812 if (unlikely(!buffer_info
->page
)) {
813 adapter
->alloc_rx_buff_failed
++;
818 if (!buffer_info
->dma
)
819 buffer_info
->dma
= dma_map_page(&pdev
->dev
,
820 buffer_info
->page
, 0,
824 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
825 rx_desc
->read
.buffer_addr
= cpu_to_le64(buffer_info
->dma
);
827 if (unlikely(++i
== rx_ring
->count
))
829 buffer_info
= &rx_ring
->buffer_info
[i
];
832 if (likely(rx_ring
->next_to_use
!= i
)) {
833 rx_ring
->next_to_use
= i
;
834 if (unlikely(i
-- == 0))
835 i
= (rx_ring
->count
- 1);
837 /* Force memory writes to complete before letting h/w
838 * know there are new descriptors to fetch. (Only
839 * applicable for weak-ordered memory model archs,
842 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
843 e1000e_update_rdt_wa(rx_ring
, i
);
845 writel(i
, rx_ring
->tail
);
849 static inline void e1000_rx_hash(struct net_device
*netdev
, __le32 rss
,
852 if (netdev
->features
& NETIF_F_RXHASH
)
853 skb
->rxhash
= le32_to_cpu(rss
);
857 * e1000_clean_rx_irq - Send received data up the network stack
858 * @rx_ring: Rx descriptor ring
860 * the return value indicates whether actual cleaning was done, there
861 * is no guarantee that everything was cleaned
863 static bool e1000_clean_rx_irq(struct e1000_ring
*rx_ring
, int *work_done
,
866 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
867 struct net_device
*netdev
= adapter
->netdev
;
868 struct pci_dev
*pdev
= adapter
->pdev
;
869 struct e1000_hw
*hw
= &adapter
->hw
;
870 union e1000_rx_desc_extended
*rx_desc
, *next_rxd
;
871 struct e1000_buffer
*buffer_info
, *next_buffer
;
874 int cleaned_count
= 0;
875 bool cleaned
= false;
876 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
878 i
= rx_ring
->next_to_clean
;
879 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
880 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
881 buffer_info
= &rx_ring
->buffer_info
[i
];
883 while (staterr
& E1000_RXD_STAT_DD
) {
886 if (*work_done
>= work_to_do
)
889 rmb(); /* read descriptor and rx_buffer_info after status DD */
891 skb
= buffer_info
->skb
;
892 buffer_info
->skb
= NULL
;
894 prefetch(skb
->data
- NET_IP_ALIGN
);
897 if (i
== rx_ring
->count
)
899 next_rxd
= E1000_RX_DESC_EXT(*rx_ring
, i
);
902 next_buffer
= &rx_ring
->buffer_info
[i
];
906 dma_unmap_single(&pdev
->dev
,
908 adapter
->rx_buffer_len
,
910 buffer_info
->dma
= 0;
912 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
915 * !EOP means multiple descriptors were used to store a single
916 * packet, if that's the case we need to toss it. In fact, we
917 * need to toss every packet with the EOP bit clear and the
918 * next frame that _does_ have the EOP bit set, as it is by
919 * definition only a frame fragment
921 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
)))
922 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
924 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
925 /* All receives must fit into a single buffer */
926 e_dbg("Receive packet consumed multiple buffers\n");
928 buffer_info
->skb
= skb
;
929 if (staterr
& E1000_RXD_STAT_EOP
)
930 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
934 if (unlikely((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
935 !(netdev
->features
& NETIF_F_RXALL
))) {
937 buffer_info
->skb
= skb
;
941 /* adjust length to remove Ethernet CRC */
942 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
943 /* If configured to store CRC, don't subtract FCS,
944 * but keep the FCS bytes out of the total_rx_bytes
947 if (netdev
->features
& NETIF_F_RXFCS
)
953 total_rx_bytes
+= length
;
957 * code added for copybreak, this should improve
958 * performance for small packets with large amounts
959 * of reassembly being done in the stack
961 if (length
< copybreak
) {
962 struct sk_buff
*new_skb
=
963 netdev_alloc_skb_ip_align(netdev
, length
);
965 skb_copy_to_linear_data_offset(new_skb
,
971 /* save the skb in buffer_info as good */
972 buffer_info
->skb
= skb
;
975 /* else just continue with the old one */
977 /* end copybreak code */
978 skb_put(skb
, length
);
980 /* Receive Checksum Offload */
981 e1000_rx_checksum(adapter
, staterr
,
982 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
, skb
);
984 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
986 e1000_receive_skb(adapter
, netdev
, skb
, staterr
,
987 rx_desc
->wb
.upper
.vlan
);
990 rx_desc
->wb
.upper
.status_error
&= cpu_to_le32(~0xFF);
992 /* return some buffers to hardware, one at a time is too slow */
993 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
994 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
999 /* use prefetched values */
1001 buffer_info
= next_buffer
;
1003 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1005 rx_ring
->next_to_clean
= i
;
1007 cleaned_count
= e1000_desc_unused(rx_ring
);
1009 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1011 adapter
->total_rx_bytes
+= total_rx_bytes
;
1012 adapter
->total_rx_packets
+= total_rx_packets
;
1016 static void e1000_put_txbuf(struct e1000_ring
*tx_ring
,
1017 struct e1000_buffer
*buffer_info
)
1019 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
1021 if (buffer_info
->dma
) {
1022 if (buffer_info
->mapped_as_page
)
1023 dma_unmap_page(&adapter
->pdev
->dev
, buffer_info
->dma
,
1024 buffer_info
->length
, DMA_TO_DEVICE
);
1026 dma_unmap_single(&adapter
->pdev
->dev
, buffer_info
->dma
,
1027 buffer_info
->length
, DMA_TO_DEVICE
);
1028 buffer_info
->dma
= 0;
1030 if (buffer_info
->skb
) {
1031 dev_kfree_skb_any(buffer_info
->skb
);
1032 buffer_info
->skb
= NULL
;
1034 buffer_info
->time_stamp
= 0;
1037 static void e1000_print_hw_hang(struct work_struct
*work
)
1039 struct e1000_adapter
*adapter
= container_of(work
,
1040 struct e1000_adapter
,
1042 struct net_device
*netdev
= adapter
->netdev
;
1043 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1044 unsigned int i
= tx_ring
->next_to_clean
;
1045 unsigned int eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1046 struct e1000_tx_desc
*eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1047 struct e1000_hw
*hw
= &adapter
->hw
;
1048 u16 phy_status
, phy_1000t_status
, phy_ext_status
;
1051 if (test_bit(__E1000_DOWN
, &adapter
->state
))
1054 if (!adapter
->tx_hang_recheck
&&
1055 (adapter
->flags2
& FLAG2_DMA_BURST
)) {
1056 /* May be block on write-back, flush and detect again
1057 * flush pending descriptor writebacks to memory
1059 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
1060 /* execute the writes immediately */
1062 adapter
->tx_hang_recheck
= true;
1065 /* Real hang detected */
1066 adapter
->tx_hang_recheck
= false;
1067 netif_stop_queue(netdev
);
1069 e1e_rphy(hw
, PHY_STATUS
, &phy_status
);
1070 e1e_rphy(hw
, PHY_1000T_STATUS
, &phy_1000t_status
);
1071 e1e_rphy(hw
, PHY_EXT_STATUS
, &phy_ext_status
);
1073 pci_read_config_word(adapter
->pdev
, PCI_STATUS
, &pci_status
);
1075 /* detected Hardware unit hang */
1076 e_err("Detected Hardware Unit Hang:\n"
1079 " next_to_use <%x>\n"
1080 " next_to_clean <%x>\n"
1081 "buffer_info[next_to_clean]:\n"
1082 " time_stamp <%lx>\n"
1083 " next_to_watch <%x>\n"
1085 " next_to_watch.status <%x>\n"
1088 "PHY 1000BASE-T Status <%x>\n"
1089 "PHY Extended Status <%x>\n"
1090 "PCI Status <%x>\n",
1091 readl(tx_ring
->head
),
1092 readl(tx_ring
->tail
),
1093 tx_ring
->next_to_use
,
1094 tx_ring
->next_to_clean
,
1095 tx_ring
->buffer_info
[eop
].time_stamp
,
1098 eop_desc
->upper
.fields
.status
,
1107 * e1000_clean_tx_irq - Reclaim resources after transmit completes
1108 * @tx_ring: Tx descriptor ring
1110 * the return value indicates whether actual cleaning was done, there
1111 * is no guarantee that everything was cleaned
1113 static bool e1000_clean_tx_irq(struct e1000_ring
*tx_ring
)
1115 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
1116 struct net_device
*netdev
= adapter
->netdev
;
1117 struct e1000_hw
*hw
= &adapter
->hw
;
1118 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
1119 struct e1000_buffer
*buffer_info
;
1120 unsigned int i
, eop
;
1121 unsigned int count
= 0;
1122 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
1123 unsigned int bytes_compl
= 0, pkts_compl
= 0;
1125 i
= tx_ring
->next_to_clean
;
1126 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1127 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1129 while ((eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
1130 (count
< tx_ring
->count
)) {
1131 bool cleaned
= false;
1132 rmb(); /* read buffer_info after eop_desc */
1133 for (; !cleaned
; count
++) {
1134 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
1135 buffer_info
= &tx_ring
->buffer_info
[i
];
1136 cleaned
= (i
== eop
);
1139 total_tx_packets
+= buffer_info
->segs
;
1140 total_tx_bytes
+= buffer_info
->bytecount
;
1141 if (buffer_info
->skb
) {
1142 bytes_compl
+= buffer_info
->skb
->len
;
1147 e1000_put_txbuf(tx_ring
, buffer_info
);
1148 tx_desc
->upper
.data
= 0;
1151 if (i
== tx_ring
->count
)
1155 if (i
== tx_ring
->next_to_use
)
1157 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1158 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1161 tx_ring
->next_to_clean
= i
;
1163 netdev_completed_queue(netdev
, pkts_compl
, bytes_compl
);
1165 #define TX_WAKE_THRESHOLD 32
1166 if (count
&& netif_carrier_ok(netdev
) &&
1167 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
1168 /* Make sure that anybody stopping the queue after this
1169 * sees the new next_to_clean.
1173 if (netif_queue_stopped(netdev
) &&
1174 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
1175 netif_wake_queue(netdev
);
1176 ++adapter
->restart_queue
;
1180 if (adapter
->detect_tx_hung
) {
1182 * Detect a transmit hang in hardware, this serializes the
1183 * check with the clearing of time_stamp and movement of i
1185 adapter
->detect_tx_hung
= false;
1186 if (tx_ring
->buffer_info
[i
].time_stamp
&&
1187 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
1188 + (adapter
->tx_timeout_factor
* HZ
)) &&
1189 !(er32(STATUS
) & E1000_STATUS_TXOFF
))
1190 schedule_work(&adapter
->print_hang_task
);
1192 adapter
->tx_hang_recheck
= false;
1194 adapter
->total_tx_bytes
+= total_tx_bytes
;
1195 adapter
->total_tx_packets
+= total_tx_packets
;
1196 return count
< tx_ring
->count
;
1200 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
1201 * @rx_ring: Rx descriptor ring
1203 * the return value indicates whether actual cleaning was done, there
1204 * is no guarantee that everything was cleaned
1206 static bool e1000_clean_rx_irq_ps(struct e1000_ring
*rx_ring
, int *work_done
,
1209 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1210 struct e1000_hw
*hw
= &adapter
->hw
;
1211 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
1212 struct net_device
*netdev
= adapter
->netdev
;
1213 struct pci_dev
*pdev
= adapter
->pdev
;
1214 struct e1000_buffer
*buffer_info
, *next_buffer
;
1215 struct e1000_ps_page
*ps_page
;
1216 struct sk_buff
*skb
;
1218 u32 length
, staterr
;
1219 int cleaned_count
= 0;
1220 bool cleaned
= false;
1221 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
1223 i
= rx_ring
->next_to_clean
;
1224 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
1225 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1226 buffer_info
= &rx_ring
->buffer_info
[i
];
1228 while (staterr
& E1000_RXD_STAT_DD
) {
1229 if (*work_done
>= work_to_do
)
1232 skb
= buffer_info
->skb
;
1233 rmb(); /* read descriptor and rx_buffer_info after status DD */
1235 /* in the packet split case this is header only */
1236 prefetch(skb
->data
- NET_IP_ALIGN
);
1239 if (i
== rx_ring
->count
)
1241 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
1244 next_buffer
= &rx_ring
->buffer_info
[i
];
1248 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1249 adapter
->rx_ps_bsize0
, DMA_FROM_DEVICE
);
1250 buffer_info
->dma
= 0;
1252 /* see !EOP comment in other Rx routine */
1253 if (!(staterr
& E1000_RXD_STAT_EOP
))
1254 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
1256 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
1257 e_dbg("Packet Split buffers didn't pick up the full packet\n");
1258 dev_kfree_skb_irq(skb
);
1259 if (staterr
& E1000_RXD_STAT_EOP
)
1260 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1264 if (unlikely((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
1265 !(netdev
->features
& NETIF_F_RXALL
))) {
1266 dev_kfree_skb_irq(skb
);
1270 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
1273 e_dbg("Last part of the packet spanning multiple descriptors\n");
1274 dev_kfree_skb_irq(skb
);
1279 skb_put(skb
, length
);
1283 * this looks ugly, but it seems compiler issues make
1284 * it more efficient than reusing j
1286 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
1289 * page alloc/put takes too long and effects small
1290 * packet throughput, so unsplit small packets and
1291 * save the alloc/put only valid in softirq (napi)
1292 * context to call kmap_*
1294 if (l1
&& (l1
<= copybreak
) &&
1295 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
1298 ps_page
= &buffer_info
->ps_pages
[0];
1301 * there is no documentation about how to call
1302 * kmap_atomic, so we can't hold the mapping
1305 dma_sync_single_for_cpu(&pdev
->dev
,
1309 vaddr
= kmap_atomic(ps_page
->page
);
1310 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
1311 kunmap_atomic(vaddr
);
1312 dma_sync_single_for_device(&pdev
->dev
,
1317 /* remove the CRC */
1318 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
1319 if (!(netdev
->features
& NETIF_F_RXFCS
))
1328 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1329 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
1333 ps_page
= &buffer_info
->ps_pages
[j
];
1334 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1337 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
1338 ps_page
->page
= NULL
;
1340 skb
->data_len
+= length
;
1341 skb
->truesize
+= PAGE_SIZE
;
1344 /* strip the ethernet crc, problem is we're using pages now so
1345 * this whole operation can get a little cpu intensive
1347 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
1348 if (!(netdev
->features
& NETIF_F_RXFCS
))
1349 pskb_trim(skb
, skb
->len
- 4);
1353 total_rx_bytes
+= skb
->len
;
1356 e1000_rx_checksum(adapter
, staterr
,
1357 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
, skb
);
1359 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1361 if (rx_desc
->wb
.upper
.header_status
&
1362 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
1363 adapter
->rx_hdr_split
++;
1365 e1000_receive_skb(adapter
, netdev
, skb
,
1366 staterr
, rx_desc
->wb
.middle
.vlan
);
1369 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
1370 buffer_info
->skb
= NULL
;
1372 /* return some buffers to hardware, one at a time is too slow */
1373 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
1374 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1379 /* use prefetched values */
1381 buffer_info
= next_buffer
;
1383 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1385 rx_ring
->next_to_clean
= i
;
1387 cleaned_count
= e1000_desc_unused(rx_ring
);
1389 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1391 adapter
->total_rx_bytes
+= total_rx_bytes
;
1392 adapter
->total_rx_packets
+= total_rx_packets
;
1397 * e1000_consume_page - helper function
1399 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
1404 skb
->data_len
+= length
;
1405 skb
->truesize
+= PAGE_SIZE
;
1409 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1410 * @adapter: board private structure
1412 * the return value indicates whether actual cleaning was done, there
1413 * is no guarantee that everything was cleaned
1415 static bool e1000_clean_jumbo_rx_irq(struct e1000_ring
*rx_ring
, int *work_done
,
1418 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1419 struct net_device
*netdev
= adapter
->netdev
;
1420 struct pci_dev
*pdev
= adapter
->pdev
;
1421 union e1000_rx_desc_extended
*rx_desc
, *next_rxd
;
1422 struct e1000_buffer
*buffer_info
, *next_buffer
;
1423 u32 length
, staterr
;
1425 int cleaned_count
= 0;
1426 bool cleaned
= false;
1427 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
1429 i
= rx_ring
->next_to_clean
;
1430 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
1431 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1432 buffer_info
= &rx_ring
->buffer_info
[i
];
1434 while (staterr
& E1000_RXD_STAT_DD
) {
1435 struct sk_buff
*skb
;
1437 if (*work_done
>= work_to_do
)
1440 rmb(); /* read descriptor and rx_buffer_info after status DD */
1442 skb
= buffer_info
->skb
;
1443 buffer_info
->skb
= NULL
;
1446 if (i
== rx_ring
->count
)
1448 next_rxd
= E1000_RX_DESC_EXT(*rx_ring
, i
);
1451 next_buffer
= &rx_ring
->buffer_info
[i
];
1455 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
, PAGE_SIZE
,
1457 buffer_info
->dma
= 0;
1459 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
1461 /* errors is only valid for DD + EOP descriptors */
1462 if (unlikely((staterr
& E1000_RXD_STAT_EOP
) &&
1463 ((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
1464 !(netdev
->features
& NETIF_F_RXALL
)))) {
1465 /* recycle both page and skb */
1466 buffer_info
->skb
= skb
;
1467 /* an error means any chain goes out the window too */
1468 if (rx_ring
->rx_skb_top
)
1469 dev_kfree_skb_irq(rx_ring
->rx_skb_top
);
1470 rx_ring
->rx_skb_top
= NULL
;
1474 #define rxtop (rx_ring->rx_skb_top)
1475 if (!(staterr
& E1000_RXD_STAT_EOP
)) {
1476 /* this descriptor is only the beginning (or middle) */
1478 /* this is the beginning of a chain */
1480 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
1483 /* this is the middle of a chain */
1484 skb_fill_page_desc(rxtop
,
1485 skb_shinfo(rxtop
)->nr_frags
,
1486 buffer_info
->page
, 0, length
);
1487 /* re-use the skb, only consumed the page */
1488 buffer_info
->skb
= skb
;
1490 e1000_consume_page(buffer_info
, rxtop
, length
);
1494 /* end of the chain */
1495 skb_fill_page_desc(rxtop
,
1496 skb_shinfo(rxtop
)->nr_frags
,
1497 buffer_info
->page
, 0, length
);
1498 /* re-use the current skb, we only consumed the
1500 buffer_info
->skb
= skb
;
1503 e1000_consume_page(buffer_info
, skb
, length
);
1505 /* no chain, got EOP, this buf is the packet
1506 * copybreak to save the put_page/alloc_page */
1507 if (length
<= copybreak
&&
1508 skb_tailroom(skb
) >= length
) {
1510 vaddr
= kmap_atomic(buffer_info
->page
);
1511 memcpy(skb_tail_pointer(skb
), vaddr
,
1513 kunmap_atomic(vaddr
);
1514 /* re-use the page, so don't erase
1515 * buffer_info->page */
1516 skb_put(skb
, length
);
1518 skb_fill_page_desc(skb
, 0,
1519 buffer_info
->page
, 0,
1521 e1000_consume_page(buffer_info
, skb
,
1527 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1528 e1000_rx_checksum(adapter
, staterr
,
1529 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
, skb
);
1531 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1533 /* probably a little skewed due to removing CRC */
1534 total_rx_bytes
+= skb
->len
;
1537 /* eth type trans needs skb->data to point to something */
1538 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1539 e_err("pskb_may_pull failed.\n");
1540 dev_kfree_skb_irq(skb
);
1544 e1000_receive_skb(adapter
, netdev
, skb
, staterr
,
1545 rx_desc
->wb
.upper
.vlan
);
1548 rx_desc
->wb
.upper
.status_error
&= cpu_to_le32(~0xFF);
1550 /* return some buffers to hardware, one at a time is too slow */
1551 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1552 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1557 /* use prefetched values */
1559 buffer_info
= next_buffer
;
1561 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1563 rx_ring
->next_to_clean
= i
;
1565 cleaned_count
= e1000_desc_unused(rx_ring
);
1567 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1569 adapter
->total_rx_bytes
+= total_rx_bytes
;
1570 adapter
->total_rx_packets
+= total_rx_packets
;
1575 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1576 * @rx_ring: Rx descriptor ring
1578 static void e1000_clean_rx_ring(struct e1000_ring
*rx_ring
)
1580 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1581 struct e1000_buffer
*buffer_info
;
1582 struct e1000_ps_page
*ps_page
;
1583 struct pci_dev
*pdev
= adapter
->pdev
;
1586 /* Free all the Rx ring sk_buffs */
1587 for (i
= 0; i
< rx_ring
->count
; i
++) {
1588 buffer_info
= &rx_ring
->buffer_info
[i
];
1589 if (buffer_info
->dma
) {
1590 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1591 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1592 adapter
->rx_buffer_len
,
1594 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1595 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
,
1598 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1599 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1600 adapter
->rx_ps_bsize0
,
1602 buffer_info
->dma
= 0;
1605 if (buffer_info
->page
) {
1606 put_page(buffer_info
->page
);
1607 buffer_info
->page
= NULL
;
1610 if (buffer_info
->skb
) {
1611 dev_kfree_skb(buffer_info
->skb
);
1612 buffer_info
->skb
= NULL
;
1615 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1616 ps_page
= &buffer_info
->ps_pages
[j
];
1619 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1622 put_page(ps_page
->page
);
1623 ps_page
->page
= NULL
;
1627 /* there also may be some cached data from a chained receive */
1628 if (rx_ring
->rx_skb_top
) {
1629 dev_kfree_skb(rx_ring
->rx_skb_top
);
1630 rx_ring
->rx_skb_top
= NULL
;
1633 /* Zero out the descriptor ring */
1634 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1636 rx_ring
->next_to_clean
= 0;
1637 rx_ring
->next_to_use
= 0;
1638 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1640 writel(0, rx_ring
->head
);
1641 writel(0, rx_ring
->tail
);
1644 static void e1000e_downshift_workaround(struct work_struct
*work
)
1646 struct e1000_adapter
*adapter
= container_of(work
,
1647 struct e1000_adapter
, downshift_task
);
1649 if (test_bit(__E1000_DOWN
, &adapter
->state
))
1652 e1000e_gig_downshift_workaround_ich8lan(&adapter
->hw
);
1656 * e1000_intr_msi - Interrupt Handler
1657 * @irq: interrupt number
1658 * @data: pointer to a network interface device structure
1660 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
1662 struct net_device
*netdev
= data
;
1663 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1664 struct e1000_hw
*hw
= &adapter
->hw
;
1665 u32 icr
= er32(ICR
);
1668 * read ICR disables interrupts using IAM
1671 if (icr
& E1000_ICR_LSC
) {
1672 hw
->mac
.get_link_status
= true;
1674 * ICH8 workaround-- Call gig speed drop workaround on cable
1675 * disconnect (LSC) before accessing any PHY registers
1677 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1678 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1679 schedule_work(&adapter
->downshift_task
);
1682 * 80003ES2LAN workaround-- For packet buffer work-around on
1683 * link down event; disable receives here in the ISR and reset
1684 * adapter in watchdog
1686 if (netif_carrier_ok(netdev
) &&
1687 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1688 /* disable receives */
1689 u32 rctl
= er32(RCTL
);
1690 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1691 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1693 /* guard against interrupt when we're going down */
1694 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1695 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1698 if (napi_schedule_prep(&adapter
->napi
)) {
1699 adapter
->total_tx_bytes
= 0;
1700 adapter
->total_tx_packets
= 0;
1701 adapter
->total_rx_bytes
= 0;
1702 adapter
->total_rx_packets
= 0;
1703 __napi_schedule(&adapter
->napi
);
1710 * e1000_intr - Interrupt Handler
1711 * @irq: interrupt number
1712 * @data: pointer to a network interface device structure
1714 static irqreturn_t
e1000_intr(int irq
, void *data
)
1716 struct net_device
*netdev
= data
;
1717 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1718 struct e1000_hw
*hw
= &adapter
->hw
;
1719 u32 rctl
, icr
= er32(ICR
);
1721 if (!icr
|| test_bit(__E1000_DOWN
, &adapter
->state
))
1722 return IRQ_NONE
; /* Not our interrupt */
1725 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1726 * not set, then the adapter didn't send an interrupt
1728 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1732 * Interrupt Auto-Mask...upon reading ICR,
1733 * interrupts are masked. No need for the
1737 if (icr
& E1000_ICR_LSC
) {
1738 hw
->mac
.get_link_status
= true;
1740 * ICH8 workaround-- Call gig speed drop workaround on cable
1741 * disconnect (LSC) before accessing any PHY registers
1743 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1744 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1745 schedule_work(&adapter
->downshift_task
);
1748 * 80003ES2LAN workaround--
1749 * For packet buffer work-around on link down event;
1750 * disable receives here in the ISR and
1751 * reset adapter in watchdog
1753 if (netif_carrier_ok(netdev
) &&
1754 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1755 /* disable receives */
1757 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1758 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1760 /* guard against interrupt when we're going down */
1761 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1762 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1765 if (napi_schedule_prep(&adapter
->napi
)) {
1766 adapter
->total_tx_bytes
= 0;
1767 adapter
->total_tx_packets
= 0;
1768 adapter
->total_rx_bytes
= 0;
1769 adapter
->total_rx_packets
= 0;
1770 __napi_schedule(&adapter
->napi
);
1776 static irqreturn_t
e1000_msix_other(int irq
, void *data
)
1778 struct net_device
*netdev
= data
;
1779 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1780 struct e1000_hw
*hw
= &adapter
->hw
;
1781 u32 icr
= er32(ICR
);
1783 if (!(icr
& E1000_ICR_INT_ASSERTED
)) {
1784 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1785 ew32(IMS
, E1000_IMS_OTHER
);
1789 if (icr
& adapter
->eiac_mask
)
1790 ew32(ICS
, (icr
& adapter
->eiac_mask
));
1792 if (icr
& E1000_ICR_OTHER
) {
1793 if (!(icr
& E1000_ICR_LSC
))
1794 goto no_link_interrupt
;
1795 hw
->mac
.get_link_status
= true;
1796 /* guard against interrupt when we're going down */
1797 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1798 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1802 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1803 ew32(IMS
, E1000_IMS_LSC
| E1000_IMS_OTHER
);
1809 static irqreturn_t
e1000_intr_msix_tx(int irq
, void *data
)
1811 struct net_device
*netdev
= data
;
1812 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1813 struct e1000_hw
*hw
= &adapter
->hw
;
1814 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1817 adapter
->total_tx_bytes
= 0;
1818 adapter
->total_tx_packets
= 0;
1820 if (!e1000_clean_tx_irq(tx_ring
))
1821 /* Ring was not completely cleaned, so fire another interrupt */
1822 ew32(ICS
, tx_ring
->ims_val
);
1827 static irqreturn_t
e1000_intr_msix_rx(int irq
, void *data
)
1829 struct net_device
*netdev
= data
;
1830 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1831 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1833 /* Write the ITR value calculated at the end of the
1834 * previous interrupt.
1836 if (rx_ring
->set_itr
) {
1837 writel(1000000000 / (rx_ring
->itr_val
* 256),
1838 rx_ring
->itr_register
);
1839 rx_ring
->set_itr
= 0;
1842 if (napi_schedule_prep(&adapter
->napi
)) {
1843 adapter
->total_rx_bytes
= 0;
1844 adapter
->total_rx_packets
= 0;
1845 __napi_schedule(&adapter
->napi
);
1851 * e1000_configure_msix - Configure MSI-X hardware
1853 * e1000_configure_msix sets up the hardware to properly
1854 * generate MSI-X interrupts.
1856 static void e1000_configure_msix(struct e1000_adapter
*adapter
)
1858 struct e1000_hw
*hw
= &adapter
->hw
;
1859 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1860 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1862 u32 ctrl_ext
, ivar
= 0;
1864 adapter
->eiac_mask
= 0;
1866 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1867 if (hw
->mac
.type
== e1000_82574
) {
1868 u32 rfctl
= er32(RFCTL
);
1869 rfctl
|= E1000_RFCTL_ACK_DIS
;
1873 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1874 /* Configure Rx vector */
1875 rx_ring
->ims_val
= E1000_IMS_RXQ0
;
1876 adapter
->eiac_mask
|= rx_ring
->ims_val
;
1877 if (rx_ring
->itr_val
)
1878 writel(1000000000 / (rx_ring
->itr_val
* 256),
1879 rx_ring
->itr_register
);
1881 writel(1, rx_ring
->itr_register
);
1882 ivar
= E1000_IVAR_INT_ALLOC_VALID
| vector
;
1884 /* Configure Tx vector */
1885 tx_ring
->ims_val
= E1000_IMS_TXQ0
;
1887 if (tx_ring
->itr_val
)
1888 writel(1000000000 / (tx_ring
->itr_val
* 256),
1889 tx_ring
->itr_register
);
1891 writel(1, tx_ring
->itr_register
);
1892 adapter
->eiac_mask
|= tx_ring
->ims_val
;
1893 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 8);
1895 /* set vector for Other Causes, e.g. link changes */
1897 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 16);
1898 if (rx_ring
->itr_val
)
1899 writel(1000000000 / (rx_ring
->itr_val
* 256),
1900 hw
->hw_addr
+ E1000_EITR_82574(vector
));
1902 writel(1, hw
->hw_addr
+ E1000_EITR_82574(vector
));
1904 /* Cause Tx interrupts on every write back */
1909 /* enable MSI-X PBA support */
1910 ctrl_ext
= er32(CTRL_EXT
);
1911 ctrl_ext
|= E1000_CTRL_EXT_PBA_CLR
;
1913 /* Auto-Mask Other interrupts upon ICR read */
1914 #define E1000_EIAC_MASK_82574 0x01F00000
1915 ew32(IAM
, ~E1000_EIAC_MASK_82574
| E1000_IMS_OTHER
);
1916 ctrl_ext
|= E1000_CTRL_EXT_EIAME
;
1917 ew32(CTRL_EXT
, ctrl_ext
);
1921 void e1000e_reset_interrupt_capability(struct e1000_adapter
*adapter
)
1923 if (adapter
->msix_entries
) {
1924 pci_disable_msix(adapter
->pdev
);
1925 kfree(adapter
->msix_entries
);
1926 adapter
->msix_entries
= NULL
;
1927 } else if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1928 pci_disable_msi(adapter
->pdev
);
1929 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
1934 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1936 * Attempt to configure interrupts using the best available
1937 * capabilities of the hardware and kernel.
1939 void e1000e_set_interrupt_capability(struct e1000_adapter
*adapter
)
1944 switch (adapter
->int_mode
) {
1945 case E1000E_INT_MODE_MSIX
:
1946 if (adapter
->flags
& FLAG_HAS_MSIX
) {
1947 adapter
->num_vectors
= 3; /* RxQ0, TxQ0 and other */
1948 adapter
->msix_entries
= kcalloc(adapter
->num_vectors
,
1949 sizeof(struct msix_entry
),
1951 if (adapter
->msix_entries
) {
1952 for (i
= 0; i
< adapter
->num_vectors
; i
++)
1953 adapter
->msix_entries
[i
].entry
= i
;
1955 err
= pci_enable_msix(adapter
->pdev
,
1956 adapter
->msix_entries
,
1957 adapter
->num_vectors
);
1961 /* MSI-X failed, so fall through and try MSI */
1962 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n");
1963 e1000e_reset_interrupt_capability(adapter
);
1965 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1967 case E1000E_INT_MODE_MSI
:
1968 if (!pci_enable_msi(adapter
->pdev
)) {
1969 adapter
->flags
|= FLAG_MSI_ENABLED
;
1971 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1972 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n");
1975 case E1000E_INT_MODE_LEGACY
:
1976 /* Don't do anything; this is the system default */
1980 /* store the number of vectors being used */
1981 adapter
->num_vectors
= 1;
1985 * e1000_request_msix - Initialize MSI-X interrupts
1987 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1990 static int e1000_request_msix(struct e1000_adapter
*adapter
)
1992 struct net_device
*netdev
= adapter
->netdev
;
1993 int err
= 0, vector
= 0;
1995 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1996 snprintf(adapter
->rx_ring
->name
,
1997 sizeof(adapter
->rx_ring
->name
) - 1,
1998 "%s-rx-0", netdev
->name
);
2000 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
2001 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2002 e1000_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
2006 adapter
->rx_ring
->itr_register
= adapter
->hw
.hw_addr
+
2007 E1000_EITR_82574(vector
);
2008 adapter
->rx_ring
->itr_val
= adapter
->itr
;
2011 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
2012 snprintf(adapter
->tx_ring
->name
,
2013 sizeof(adapter
->tx_ring
->name
) - 1,
2014 "%s-tx-0", netdev
->name
);
2016 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
2017 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2018 e1000_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
2022 adapter
->tx_ring
->itr_register
= adapter
->hw
.hw_addr
+
2023 E1000_EITR_82574(vector
);
2024 adapter
->tx_ring
->itr_val
= adapter
->itr
;
2027 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2028 e1000_msix_other
, 0, netdev
->name
, netdev
);
2032 e1000_configure_msix(adapter
);
2038 * e1000_request_irq - initialize interrupts
2040 * Attempts to configure interrupts using the best available
2041 * capabilities of the hardware and kernel.
2043 static int e1000_request_irq(struct e1000_adapter
*adapter
)
2045 struct net_device
*netdev
= adapter
->netdev
;
2048 if (adapter
->msix_entries
) {
2049 err
= e1000_request_msix(adapter
);
2052 /* fall back to MSI */
2053 e1000e_reset_interrupt_capability(adapter
);
2054 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
2055 e1000e_set_interrupt_capability(adapter
);
2057 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
2058 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi
, 0,
2059 netdev
->name
, netdev
);
2063 /* fall back to legacy interrupt */
2064 e1000e_reset_interrupt_capability(adapter
);
2065 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
2068 err
= request_irq(adapter
->pdev
->irq
, e1000_intr
, IRQF_SHARED
,
2069 netdev
->name
, netdev
);
2071 e_err("Unable to allocate interrupt, Error: %d\n", err
);
2076 static void e1000_free_irq(struct e1000_adapter
*adapter
)
2078 struct net_device
*netdev
= adapter
->netdev
;
2080 if (adapter
->msix_entries
) {
2083 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2086 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2089 /* Other Causes interrupt vector */
2090 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2094 free_irq(adapter
->pdev
->irq
, netdev
);
2098 * e1000_irq_disable - Mask off interrupt generation on the NIC
2100 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
2102 struct e1000_hw
*hw
= &adapter
->hw
;
2105 if (adapter
->msix_entries
)
2106 ew32(EIAC_82574
, 0);
2109 if (adapter
->msix_entries
) {
2111 for (i
= 0; i
< adapter
->num_vectors
; i
++)
2112 synchronize_irq(adapter
->msix_entries
[i
].vector
);
2114 synchronize_irq(adapter
->pdev
->irq
);
2119 * e1000_irq_enable - Enable default interrupt generation settings
2121 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
2123 struct e1000_hw
*hw
= &adapter
->hw
;
2125 if (adapter
->msix_entries
) {
2126 ew32(EIAC_82574
, adapter
->eiac_mask
& E1000_EIAC_MASK_82574
);
2127 ew32(IMS
, adapter
->eiac_mask
| E1000_IMS_OTHER
| E1000_IMS_LSC
);
2129 ew32(IMS
, IMS_ENABLE_MASK
);
2135 * e1000e_get_hw_control - get control of the h/w from f/w
2136 * @adapter: address of board private structure
2138 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2139 * For ASF and Pass Through versions of f/w this means that
2140 * the driver is loaded. For AMT version (only with 82573)
2141 * of the f/w this means that the network i/f is open.
2143 void e1000e_get_hw_control(struct e1000_adapter
*adapter
)
2145 struct e1000_hw
*hw
= &adapter
->hw
;
2149 /* Let firmware know the driver has taken over */
2150 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2152 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
2153 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2154 ctrl_ext
= er32(CTRL_EXT
);
2155 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
2160 * e1000e_release_hw_control - release control of the h/w to f/w
2161 * @adapter: address of board private structure
2163 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2164 * For ASF and Pass Through versions of f/w this means that the
2165 * driver is no longer loaded. For AMT version (only with 82573) i
2166 * of the f/w this means that the network i/f is closed.
2169 void e1000e_release_hw_control(struct e1000_adapter
*adapter
)
2171 struct e1000_hw
*hw
= &adapter
->hw
;
2175 /* Let firmware taken over control of h/w */
2176 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2178 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
2179 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2180 ctrl_ext
= er32(CTRL_EXT
);
2181 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
2186 * @e1000_alloc_ring - allocate memory for a ring structure
2188 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
2189 struct e1000_ring
*ring
)
2191 struct pci_dev
*pdev
= adapter
->pdev
;
2193 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
2202 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
2203 * @tx_ring: Tx descriptor ring
2205 * Return 0 on success, negative on failure
2207 int e1000e_setup_tx_resources(struct e1000_ring
*tx_ring
)
2209 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2210 int err
= -ENOMEM
, size
;
2212 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2213 tx_ring
->buffer_info
= vzalloc(size
);
2214 if (!tx_ring
->buffer_info
)
2217 /* round up to nearest 4K */
2218 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2219 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
2221 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
2225 tx_ring
->next_to_use
= 0;
2226 tx_ring
->next_to_clean
= 0;
2230 vfree(tx_ring
->buffer_info
);
2231 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2236 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
2237 * @rx_ring: Rx descriptor ring
2239 * Returns 0 on success, negative on failure
2241 int e1000e_setup_rx_resources(struct e1000_ring
*rx_ring
)
2243 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
2244 struct e1000_buffer
*buffer_info
;
2245 int i
, size
, desc_len
, err
= -ENOMEM
;
2247 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2248 rx_ring
->buffer_info
= vzalloc(size
);
2249 if (!rx_ring
->buffer_info
)
2252 for (i
= 0; i
< rx_ring
->count
; i
++) {
2253 buffer_info
= &rx_ring
->buffer_info
[i
];
2254 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
2255 sizeof(struct e1000_ps_page
),
2257 if (!buffer_info
->ps_pages
)
2261 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
2263 /* Round up to nearest 4K */
2264 rx_ring
->size
= rx_ring
->count
* desc_len
;
2265 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
2267 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
2271 rx_ring
->next_to_clean
= 0;
2272 rx_ring
->next_to_use
= 0;
2273 rx_ring
->rx_skb_top
= NULL
;
2278 for (i
= 0; i
< rx_ring
->count
; i
++) {
2279 buffer_info
= &rx_ring
->buffer_info
[i
];
2280 kfree(buffer_info
->ps_pages
);
2283 vfree(rx_ring
->buffer_info
);
2284 e_err("Unable to allocate memory for the receive descriptor ring\n");
2289 * e1000_clean_tx_ring - Free Tx Buffers
2290 * @tx_ring: Tx descriptor ring
2292 static void e1000_clean_tx_ring(struct e1000_ring
*tx_ring
)
2294 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2295 struct e1000_buffer
*buffer_info
;
2299 for (i
= 0; i
< tx_ring
->count
; i
++) {
2300 buffer_info
= &tx_ring
->buffer_info
[i
];
2301 e1000_put_txbuf(tx_ring
, buffer_info
);
2304 netdev_reset_queue(adapter
->netdev
);
2305 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2306 memset(tx_ring
->buffer_info
, 0, size
);
2308 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2310 tx_ring
->next_to_use
= 0;
2311 tx_ring
->next_to_clean
= 0;
2313 writel(0, tx_ring
->head
);
2314 writel(0, tx_ring
->tail
);
2318 * e1000e_free_tx_resources - Free Tx Resources per Queue
2319 * @tx_ring: Tx descriptor ring
2321 * Free all transmit software resources
2323 void e1000e_free_tx_resources(struct e1000_ring
*tx_ring
)
2325 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2326 struct pci_dev
*pdev
= adapter
->pdev
;
2328 e1000_clean_tx_ring(tx_ring
);
2330 vfree(tx_ring
->buffer_info
);
2331 tx_ring
->buffer_info
= NULL
;
2333 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
2335 tx_ring
->desc
= NULL
;
2339 * e1000e_free_rx_resources - Free Rx Resources
2340 * @rx_ring: Rx descriptor ring
2342 * Free all receive software resources
2344 void e1000e_free_rx_resources(struct e1000_ring
*rx_ring
)
2346 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
2347 struct pci_dev
*pdev
= adapter
->pdev
;
2350 e1000_clean_rx_ring(rx_ring
);
2352 for (i
= 0; i
< rx_ring
->count
; i
++)
2353 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
2355 vfree(rx_ring
->buffer_info
);
2356 rx_ring
->buffer_info
= NULL
;
2358 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
2360 rx_ring
->desc
= NULL
;
2364 * e1000_update_itr - update the dynamic ITR value based on statistics
2365 * @adapter: pointer to adapter
2366 * @itr_setting: current adapter->itr
2367 * @packets: the number of packets during this measurement interval
2368 * @bytes: the number of bytes during this measurement interval
2370 * Stores a new ITR value based on packets and byte
2371 * counts during the last interrupt. The advantage of per interrupt
2372 * computation is faster updates and more accurate ITR for the current
2373 * traffic pattern. Constants in this function were computed
2374 * based on theoretical maximum wire speed and thresholds were set based
2375 * on testing data as well as attempting to minimize response time
2376 * while increasing bulk throughput. This functionality is controlled
2377 * by the InterruptThrottleRate module parameter.
2379 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
2380 u16 itr_setting
, int packets
,
2383 unsigned int retval
= itr_setting
;
2388 switch (itr_setting
) {
2389 case lowest_latency
:
2390 /* handle TSO and jumbo frames */
2391 if (bytes
/packets
> 8000)
2392 retval
= bulk_latency
;
2393 else if ((packets
< 5) && (bytes
> 512))
2394 retval
= low_latency
;
2396 case low_latency
: /* 50 usec aka 20000 ints/s */
2397 if (bytes
> 10000) {
2398 /* this if handles the TSO accounting */
2399 if (bytes
/packets
> 8000)
2400 retval
= bulk_latency
;
2401 else if ((packets
< 10) || ((bytes
/packets
) > 1200))
2402 retval
= bulk_latency
;
2403 else if ((packets
> 35))
2404 retval
= lowest_latency
;
2405 } else if (bytes
/packets
> 2000) {
2406 retval
= bulk_latency
;
2407 } else if (packets
<= 2 && bytes
< 512) {
2408 retval
= lowest_latency
;
2411 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2412 if (bytes
> 25000) {
2414 retval
= low_latency
;
2415 } else if (bytes
< 6000) {
2416 retval
= low_latency
;
2424 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2426 struct e1000_hw
*hw
= &adapter
->hw
;
2428 u32 new_itr
= adapter
->itr
;
2430 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2431 if (adapter
->link_speed
!= SPEED_1000
) {
2437 if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
2442 adapter
->tx_itr
= e1000_update_itr(adapter
,
2444 adapter
->total_tx_packets
,
2445 adapter
->total_tx_bytes
);
2446 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2447 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
2448 adapter
->tx_itr
= low_latency
;
2450 adapter
->rx_itr
= e1000_update_itr(adapter
,
2452 adapter
->total_rx_packets
,
2453 adapter
->total_rx_bytes
);
2454 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2455 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2456 adapter
->rx_itr
= low_latency
;
2458 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2460 switch (current_itr
) {
2461 /* counts and packets in update_itr are dependent on these numbers */
2462 case lowest_latency
:
2466 new_itr
= 20000; /* aka hwitr = ~200 */
2476 if (new_itr
!= adapter
->itr
) {
2478 * this attempts to bias the interrupt rate towards Bulk
2479 * by adding intermediate steps when interrupt rate is
2482 new_itr
= new_itr
> adapter
->itr
?
2483 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2485 adapter
->itr
= new_itr
;
2486 adapter
->rx_ring
->itr_val
= new_itr
;
2487 if (adapter
->msix_entries
)
2488 adapter
->rx_ring
->set_itr
= 1;
2491 ew32(ITR
, 1000000000 / (new_itr
* 256));
2498 * e1000_alloc_queues - Allocate memory for all rings
2499 * @adapter: board private structure to initialize
2501 static int __devinit
e1000_alloc_queues(struct e1000_adapter
*adapter
)
2503 int size
= sizeof(struct e1000_ring
);
2505 adapter
->tx_ring
= kzalloc(size
, GFP_KERNEL
);
2506 if (!adapter
->tx_ring
)
2508 adapter
->tx_ring
->count
= adapter
->tx_ring_count
;
2509 adapter
->tx_ring
->adapter
= adapter
;
2511 adapter
->rx_ring
= kzalloc(size
, GFP_KERNEL
);
2512 if (!adapter
->rx_ring
)
2514 adapter
->rx_ring
->count
= adapter
->rx_ring_count
;
2515 adapter
->rx_ring
->adapter
= adapter
;
2519 e_err("Unable to allocate memory for queues\n");
2520 kfree(adapter
->rx_ring
);
2521 kfree(adapter
->tx_ring
);
2526 * e1000_clean - NAPI Rx polling callback
2527 * @napi: struct associated with this polling callback
2528 * @budget: amount of packets driver is allowed to process this poll
2530 static int e1000_clean(struct napi_struct
*napi
, int budget
)
2532 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
2533 struct e1000_hw
*hw
= &adapter
->hw
;
2534 struct net_device
*poll_dev
= adapter
->netdev
;
2535 int tx_cleaned
= 1, work_done
= 0;
2537 adapter
= netdev_priv(poll_dev
);
2539 if (adapter
->msix_entries
&&
2540 !(adapter
->rx_ring
->ims_val
& adapter
->tx_ring
->ims_val
))
2543 tx_cleaned
= e1000_clean_tx_irq(adapter
->tx_ring
);
2546 adapter
->clean_rx(adapter
->rx_ring
, &work_done
, budget
);
2551 /* If budget not fully consumed, exit the polling mode */
2552 if (work_done
< budget
) {
2553 if (adapter
->itr_setting
& 3)
2554 e1000_set_itr(adapter
);
2555 napi_complete(napi
);
2556 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
2557 if (adapter
->msix_entries
)
2558 ew32(IMS
, adapter
->rx_ring
->ims_val
);
2560 e1000_irq_enable(adapter
);
2567 static int e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
2569 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2570 struct e1000_hw
*hw
= &adapter
->hw
;
2573 /* don't update vlan cookie if already programmed */
2574 if ((adapter
->hw
.mng_cookie
.status
&
2575 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2576 (vid
== adapter
->mng_vlan_id
))
2579 /* add VID to filter table */
2580 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2581 index
= (vid
>> 5) & 0x7F;
2582 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2583 vfta
|= (1 << (vid
& 0x1F));
2584 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2587 set_bit(vid
, adapter
->active_vlans
);
2592 static int e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
2594 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2595 struct e1000_hw
*hw
= &adapter
->hw
;
2598 if ((adapter
->hw
.mng_cookie
.status
&
2599 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2600 (vid
== adapter
->mng_vlan_id
)) {
2601 /* release control to f/w */
2602 e1000e_release_hw_control(adapter
);
2606 /* remove VID from filter table */
2607 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2608 index
= (vid
>> 5) & 0x7F;
2609 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2610 vfta
&= ~(1 << (vid
& 0x1F));
2611 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2614 clear_bit(vid
, adapter
->active_vlans
);
2620 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
2621 * @adapter: board private structure to initialize
2623 static void e1000e_vlan_filter_disable(struct e1000_adapter
*adapter
)
2625 struct net_device
*netdev
= adapter
->netdev
;
2626 struct e1000_hw
*hw
= &adapter
->hw
;
2629 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2630 /* disable VLAN receive filtering */
2632 rctl
&= ~(E1000_RCTL_VFE
| E1000_RCTL_CFIEN
);
2635 if (adapter
->mng_vlan_id
!= (u16
)E1000_MNG_VLAN_NONE
) {
2636 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
2637 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2643 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
2644 * @adapter: board private structure to initialize
2646 static void e1000e_vlan_filter_enable(struct e1000_adapter
*adapter
)
2648 struct e1000_hw
*hw
= &adapter
->hw
;
2651 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2652 /* enable VLAN receive filtering */
2654 rctl
|= E1000_RCTL_VFE
;
2655 rctl
&= ~E1000_RCTL_CFIEN
;
2661 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping
2662 * @adapter: board private structure to initialize
2664 static void e1000e_vlan_strip_disable(struct e1000_adapter
*adapter
)
2666 struct e1000_hw
*hw
= &adapter
->hw
;
2669 /* disable VLAN tag insert/strip */
2671 ctrl
&= ~E1000_CTRL_VME
;
2676 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
2677 * @adapter: board private structure to initialize
2679 static void e1000e_vlan_strip_enable(struct e1000_adapter
*adapter
)
2681 struct e1000_hw
*hw
= &adapter
->hw
;
2684 /* enable VLAN tag insert/strip */
2686 ctrl
|= E1000_CTRL_VME
;
2690 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
2692 struct net_device
*netdev
= adapter
->netdev
;
2693 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
2694 u16 old_vid
= adapter
->mng_vlan_id
;
2696 if (adapter
->hw
.mng_cookie
.status
&
2697 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
2698 e1000_vlan_rx_add_vid(netdev
, vid
);
2699 adapter
->mng_vlan_id
= vid
;
2702 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) && (vid
!= old_vid
))
2703 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
2706 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
2710 e1000_vlan_rx_add_vid(adapter
->netdev
, 0);
2712 for_each_set_bit(vid
, adapter
->active_vlans
, VLAN_N_VID
)
2713 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
2716 static void e1000_init_manageability_pt(struct e1000_adapter
*adapter
)
2718 struct e1000_hw
*hw
= &adapter
->hw
;
2719 u32 manc
, manc2h
, mdef
, i
, j
;
2721 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
2727 * enable receiving management packets to the host. this will probably
2728 * generate destination unreachable messages from the host OS, but
2729 * the packets will be handled on SMBUS
2731 manc
|= E1000_MANC_EN_MNG2HOST
;
2732 manc2h
= er32(MANC2H
);
2734 switch (hw
->mac
.type
) {
2736 manc2h
|= (E1000_MANC2H_PORT_623
| E1000_MANC2H_PORT_664
);
2741 * Check if IPMI pass-through decision filter already exists;
2744 for (i
= 0, j
= 0; i
< 8; i
++) {
2745 mdef
= er32(MDEF(i
));
2747 /* Ignore filters with anything other than IPMI ports */
2748 if (mdef
& ~(E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2751 /* Enable this decision filter in MANC2H */
2758 if (j
== (E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2761 /* Create new decision filter in an empty filter */
2762 for (i
= 0, j
= 0; i
< 8; i
++)
2763 if (er32(MDEF(i
)) == 0) {
2764 ew32(MDEF(i
), (E1000_MDEF_PORT_623
|
2765 E1000_MDEF_PORT_664
));
2772 e_warn("Unable to create IPMI pass-through filter\n");
2776 ew32(MANC2H
, manc2h
);
2781 * e1000_configure_tx - Configure Transmit Unit after Reset
2782 * @adapter: board private structure
2784 * Configure the Tx unit of the MAC after a reset.
2786 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
2788 struct e1000_hw
*hw
= &adapter
->hw
;
2789 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2793 /* Setup the HW Tx Head and Tail descriptor pointers */
2794 tdba
= tx_ring
->dma
;
2795 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2796 ew32(TDBAL
, (tdba
& DMA_BIT_MASK(32)));
2797 ew32(TDBAH
, (tdba
>> 32));
2801 tx_ring
->head
= adapter
->hw
.hw_addr
+ E1000_TDH
;
2802 tx_ring
->tail
= adapter
->hw
.hw_addr
+ E1000_TDT
;
2804 /* Set the Tx Interrupt Delay register */
2805 ew32(TIDV
, adapter
->tx_int_delay
);
2806 /* Tx irq moderation */
2807 ew32(TADV
, adapter
->tx_abs_int_delay
);
2809 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
2810 u32 txdctl
= er32(TXDCTL(0));
2811 txdctl
&= ~(E1000_TXDCTL_PTHRESH
| E1000_TXDCTL_HTHRESH
|
2812 E1000_TXDCTL_WTHRESH
);
2814 * set up some performance related parameters to encourage the
2815 * hardware to use the bus more efficiently in bursts, depends
2816 * on the tx_int_delay to be enabled,
2817 * wthresh = 5 ==> burst write a cacheline (64 bytes) at a time
2818 * hthresh = 1 ==> prefetch when one or more available
2819 * pthresh = 0x1f ==> prefetch if internal cache 31 or less
2820 * BEWARE: this seems to work but should be considered first if
2821 * there are Tx hangs or other Tx related bugs
2823 txdctl
|= E1000_TXDCTL_DMA_BURST_ENABLE
;
2824 ew32(TXDCTL(0), txdctl
);
2826 /* erratum work around: set txdctl the same for both queues */
2827 ew32(TXDCTL(1), er32(TXDCTL(0)));
2829 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
2830 tarc
= er32(TARC(0));
2832 * set the speed mode bit, we'll clear it if we're not at
2833 * gigabit link later
2835 #define SPEED_MODE_BIT (1 << 21)
2836 tarc
|= SPEED_MODE_BIT
;
2837 ew32(TARC(0), tarc
);
2840 /* errata: program both queues to unweighted RR */
2841 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
2842 tarc
= er32(TARC(0));
2844 ew32(TARC(0), tarc
);
2845 tarc
= er32(TARC(1));
2847 ew32(TARC(1), tarc
);
2850 /* Setup Transmit Descriptor Settings for eop descriptor */
2851 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
2853 /* only set IDE if we are delaying interrupts using the timers */
2854 if (adapter
->tx_int_delay
)
2855 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
2857 /* enable Report Status bit */
2858 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
2860 hw
->mac
.ops
.config_collision_dist(hw
);
2864 * e1000_setup_rctl - configure the receive control registers
2865 * @adapter: Board private structure
2867 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2868 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2869 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
2871 struct e1000_hw
*hw
= &adapter
->hw
;
2875 /* Workaround Si errata on 82579 - configure jumbo frame flow */
2876 if (hw
->mac
.type
== e1000_pch2lan
) {
2879 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
)
2880 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, true);
2882 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, false);
2885 e_dbg("failed to enable jumbo frame workaround mode\n");
2888 /* Program MC offset vector base */
2890 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
2891 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
2892 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
2893 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
2895 /* Do not Store bad packets */
2896 rctl
&= ~E1000_RCTL_SBP
;
2898 /* Enable Long Packet receive */
2899 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
2900 rctl
&= ~E1000_RCTL_LPE
;
2902 rctl
|= E1000_RCTL_LPE
;
2904 /* Some systems expect that the CRC is included in SMBUS traffic. The
2905 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2906 * host memory when this is enabled
2908 if (adapter
->flags2
& FLAG2_CRC_STRIPPING
)
2909 rctl
|= E1000_RCTL_SECRC
;
2911 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
2912 if ((hw
->phy
.type
== e1000_phy_82577
) && (rctl
& E1000_RCTL_LPE
)) {
2915 e1e_rphy(hw
, PHY_REG(770, 26), &phy_data
);
2917 phy_data
|= (1 << 2);
2918 e1e_wphy(hw
, PHY_REG(770, 26), phy_data
);
2920 e1e_rphy(hw
, 22, &phy_data
);
2922 phy_data
|= (1 << 14);
2923 e1e_wphy(hw
, 0x10, 0x2823);
2924 e1e_wphy(hw
, 0x11, 0x0003);
2925 e1e_wphy(hw
, 22, phy_data
);
2928 /* Setup buffer sizes */
2929 rctl
&= ~E1000_RCTL_SZ_4096
;
2930 rctl
|= E1000_RCTL_BSEX
;
2931 switch (adapter
->rx_buffer_len
) {
2934 rctl
|= E1000_RCTL_SZ_2048
;
2935 rctl
&= ~E1000_RCTL_BSEX
;
2938 rctl
|= E1000_RCTL_SZ_4096
;
2941 rctl
|= E1000_RCTL_SZ_8192
;
2944 rctl
|= E1000_RCTL_SZ_16384
;
2948 /* Enable Extended Status in all Receive Descriptors */
2949 rfctl
= er32(RFCTL
);
2950 rfctl
|= E1000_RFCTL_EXTEN
;
2953 * 82571 and greater support packet-split where the protocol
2954 * header is placed in skb->data and the packet data is
2955 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2956 * In the case of a non-split, skb->data is linearly filled,
2957 * followed by the page buffers. Therefore, skb->data is
2958 * sized to hold the largest protocol header.
2960 * allocations using alloc_page take too long for regular MTU
2961 * so only enable packet split for jumbo frames
2963 * Using pages when the page size is greater than 16k wastes
2964 * a lot of memory, since we allocate 3 pages at all times
2967 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
2968 if ((pages
<= 3) && (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
2969 adapter
->rx_ps_pages
= pages
;
2971 adapter
->rx_ps_pages
= 0;
2973 if (adapter
->rx_ps_pages
) {
2977 * disable packet split support for IPv6 extension headers,
2978 * because some malformed IPv6 headers can hang the Rx
2980 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
2981 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
2983 /* Enable Packet split descriptors */
2984 rctl
|= E1000_RCTL_DTYP_PS
;
2986 psrctl
|= adapter
->rx_ps_bsize0
>>
2987 E1000_PSRCTL_BSIZE0_SHIFT
;
2989 switch (adapter
->rx_ps_pages
) {
2991 psrctl
|= PAGE_SIZE
<<
2992 E1000_PSRCTL_BSIZE3_SHIFT
;
2994 psrctl
|= PAGE_SIZE
<<
2995 E1000_PSRCTL_BSIZE2_SHIFT
;
2997 psrctl
|= PAGE_SIZE
>>
2998 E1000_PSRCTL_BSIZE1_SHIFT
;
3002 ew32(PSRCTL
, psrctl
);
3005 /* This is useful for sniffing bad packets. */
3006 if (adapter
->netdev
->features
& NETIF_F_RXALL
) {
3007 /* UPE and MPE will be handled by normal PROMISC logic
3008 * in e1000e_set_rx_mode */
3009 rctl
|= (E1000_RCTL_SBP
| /* Receive bad packets */
3010 E1000_RCTL_BAM
| /* RX All Bcast Pkts */
3011 E1000_RCTL_PMCF
); /* RX All MAC Ctrl Pkts */
3013 rctl
&= ~(E1000_RCTL_VFE
| /* Disable VLAN filter */
3014 E1000_RCTL_DPF
| /* Allow filtered pause */
3015 E1000_RCTL_CFIEN
); /* Dis VLAN CFIEN Filter */
3016 /* Do not mess with E1000_CTRL_VME, it affects transmit as well,
3017 * and that breaks VLANs.
3023 /* just started the receive unit, no need to restart */
3024 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
3028 * e1000_configure_rx - Configure Receive Unit after Reset
3029 * @adapter: board private structure
3031 * Configure the Rx unit of the MAC after a reset.
3033 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
3035 struct e1000_hw
*hw
= &adapter
->hw
;
3036 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
3038 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
3040 if (adapter
->rx_ps_pages
) {
3041 /* this is a 32 byte descriptor */
3042 rdlen
= rx_ring
->count
*
3043 sizeof(union e1000_rx_desc_packet_split
);
3044 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
3045 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
3046 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3047 rdlen
= rx_ring
->count
* sizeof(union e1000_rx_desc_extended
);
3048 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
3049 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
3051 rdlen
= rx_ring
->count
* sizeof(union e1000_rx_desc_extended
);
3052 adapter
->clean_rx
= e1000_clean_rx_irq
;
3053 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
3056 /* disable receives while setting up the descriptors */
3058 if (!(adapter
->flags2
& FLAG2_NO_DISABLE_RX
))
3059 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3061 usleep_range(10000, 20000);
3063 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
3065 * set the writeback threshold (only takes effect if the RDTR
3066 * is set). set GRAN=1 and write back up to 0x4 worth, and
3067 * enable prefetching of 0x20 Rx descriptors
3073 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE
);
3074 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE
);
3077 * override the delay timers for enabling bursting, only if
3078 * the value was not set by the user via module options
3080 if (adapter
->rx_int_delay
== DEFAULT_RDTR
)
3081 adapter
->rx_int_delay
= BURST_RDTR
;
3082 if (adapter
->rx_abs_int_delay
== DEFAULT_RADV
)
3083 adapter
->rx_abs_int_delay
= BURST_RADV
;
3086 /* set the Receive Delay Timer Register */
3087 ew32(RDTR
, adapter
->rx_int_delay
);
3089 /* irq moderation */
3090 ew32(RADV
, adapter
->rx_abs_int_delay
);
3091 if ((adapter
->itr_setting
!= 0) && (adapter
->itr
!= 0))
3092 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
3094 ctrl_ext
= er32(CTRL_EXT
);
3095 /* Auto-Mask interrupts upon ICR access */
3096 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
3097 ew32(IAM
, 0xffffffff);
3098 ew32(CTRL_EXT
, ctrl_ext
);
3102 * Setup the HW Rx Head and Tail Descriptor Pointers and
3103 * the Base and Length of the Rx Descriptor Ring
3105 rdba
= rx_ring
->dma
;
3106 ew32(RDBAL
, (rdba
& DMA_BIT_MASK(32)));
3107 ew32(RDBAH
, (rdba
>> 32));
3111 rx_ring
->head
= adapter
->hw
.hw_addr
+ E1000_RDH
;
3112 rx_ring
->tail
= adapter
->hw
.hw_addr
+ E1000_RDT
;
3114 /* Enable Receive Checksum Offload for TCP and UDP */
3115 rxcsum
= er32(RXCSUM
);
3116 if (adapter
->netdev
->features
& NETIF_F_RXCSUM
) {
3117 rxcsum
|= E1000_RXCSUM_TUOFL
;
3120 * IPv4 payload checksum for UDP fragments must be
3121 * used in conjunction with packet-split.
3123 if (adapter
->rx_ps_pages
)
3124 rxcsum
|= E1000_RXCSUM_IPPCSE
;
3126 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
3127 /* no need to clear IPPCSE as it defaults to 0 */
3129 ew32(RXCSUM
, rxcsum
);
3131 if (adapter
->hw
.mac
.type
== e1000_pch2lan
) {
3133 * With jumbo frames, excessive C-state transition
3134 * latencies result in dropped transactions.
3136 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3137 u32 rxdctl
= er32(RXDCTL(0));
3138 ew32(RXDCTL(0), rxdctl
| 0x3);
3139 pm_qos_update_request(&adapter
->netdev
->pm_qos_req
, 55);
3141 pm_qos_update_request(&adapter
->netdev
->pm_qos_req
,
3142 PM_QOS_DEFAULT_VALUE
);
3146 /* Enable Receives */
3151 * e1000e_write_mc_addr_list - write multicast addresses to MTA
3152 * @netdev: network interface device structure
3154 * Writes multicast address list to the MTA hash table.
3155 * Returns: -ENOMEM on failure
3156 * 0 on no addresses written
3157 * X on writing X addresses to MTA
3159 static int e1000e_write_mc_addr_list(struct net_device
*netdev
)
3161 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3162 struct e1000_hw
*hw
= &adapter
->hw
;
3163 struct netdev_hw_addr
*ha
;
3167 if (netdev_mc_empty(netdev
)) {
3168 /* nothing to program, so clear mc list */
3169 hw
->mac
.ops
.update_mc_addr_list(hw
, NULL
, 0);
3173 mta_list
= kzalloc(netdev_mc_count(netdev
) * ETH_ALEN
, GFP_ATOMIC
);
3177 /* update_mc_addr_list expects a packed array of only addresses. */
3179 netdev_for_each_mc_addr(ha
, netdev
)
3180 memcpy(mta_list
+ (i
++ * ETH_ALEN
), ha
->addr
, ETH_ALEN
);
3182 hw
->mac
.ops
.update_mc_addr_list(hw
, mta_list
, i
);
3185 return netdev_mc_count(netdev
);
3189 * e1000e_write_uc_addr_list - write unicast addresses to RAR table
3190 * @netdev: network interface device structure
3192 * Writes unicast address list to the RAR table.
3193 * Returns: -ENOMEM on failure/insufficient address space
3194 * 0 on no addresses written
3195 * X on writing X addresses to the RAR table
3197 static int e1000e_write_uc_addr_list(struct net_device
*netdev
)
3199 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3200 struct e1000_hw
*hw
= &adapter
->hw
;
3201 unsigned int rar_entries
= hw
->mac
.rar_entry_count
;
3204 /* save a rar entry for our hardware address */
3207 /* save a rar entry for the LAA workaround */
3208 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
)
3211 /* return ENOMEM indicating insufficient memory for addresses */
3212 if (netdev_uc_count(netdev
) > rar_entries
)
3215 if (!netdev_uc_empty(netdev
) && rar_entries
) {
3216 struct netdev_hw_addr
*ha
;
3219 * write the addresses in reverse order to avoid write
3222 netdev_for_each_uc_addr(ha
, netdev
) {
3225 e1000e_rar_set(hw
, ha
->addr
, rar_entries
--);
3230 /* zero out the remaining RAR entries not used above */
3231 for (; rar_entries
> 0; rar_entries
--) {
3232 ew32(RAH(rar_entries
), 0);
3233 ew32(RAL(rar_entries
), 0);
3241 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set
3242 * @netdev: network interface device structure
3244 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast
3245 * address list or the network interface flags are updated. This routine is
3246 * responsible for configuring the hardware for proper unicast, multicast,
3247 * promiscuous mode, and all-multi behavior.
3249 static void e1000e_set_rx_mode(struct net_device
*netdev
)
3251 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3252 struct e1000_hw
*hw
= &adapter
->hw
;
3255 /* Check for Promiscuous and All Multicast modes */
3258 /* clear the affected bits */
3259 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3261 if (netdev
->flags
& IFF_PROMISC
) {
3262 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3263 /* Do not hardware filter VLANs in promisc mode */
3264 e1000e_vlan_filter_disable(adapter
);
3268 if (netdev
->flags
& IFF_ALLMULTI
) {
3269 rctl
|= E1000_RCTL_MPE
;
3272 * Write addresses to the MTA, if the attempt fails
3273 * then we should just turn on promiscuous mode so
3274 * that we can at least receive multicast traffic
3276 count
= e1000e_write_mc_addr_list(netdev
);
3278 rctl
|= E1000_RCTL_MPE
;
3280 e1000e_vlan_filter_enable(adapter
);
3282 * Write addresses to available RAR registers, if there is not
3283 * sufficient space to store all the addresses then enable
3284 * unicast promiscuous mode
3286 count
= e1000e_write_uc_addr_list(netdev
);
3288 rctl
|= E1000_RCTL_UPE
;
3293 if (netdev
->features
& NETIF_F_HW_VLAN_RX
)
3294 e1000e_vlan_strip_enable(adapter
);
3296 e1000e_vlan_strip_disable(adapter
);
3299 static void e1000e_setup_rss_hash(struct e1000_adapter
*adapter
)
3301 struct e1000_hw
*hw
= &adapter
->hw
;
3304 static const u32 rsskey
[10] = {
3305 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0,
3306 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe
3309 /* Fill out hash function seed */
3310 for (i
= 0; i
< 10; i
++)
3311 ew32(RSSRK(i
), rsskey
[i
]);
3313 /* Direct all traffic to queue 0 */
3314 for (i
= 0; i
< 32; i
++)
3318 * Disable raw packet checksumming so that RSS hash is placed in
3319 * descriptor on writeback.
3321 rxcsum
= er32(RXCSUM
);
3322 rxcsum
|= E1000_RXCSUM_PCSD
;
3324 ew32(RXCSUM
, rxcsum
);
3326 mrqc
= (E1000_MRQC_RSS_FIELD_IPV4
|
3327 E1000_MRQC_RSS_FIELD_IPV4_TCP
|
3328 E1000_MRQC_RSS_FIELD_IPV6
|
3329 E1000_MRQC_RSS_FIELD_IPV6_TCP
|
3330 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX
);
3336 * e1000_configure - configure the hardware for Rx and Tx
3337 * @adapter: private board structure
3339 static void e1000_configure(struct e1000_adapter
*adapter
)
3341 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
3343 e1000e_set_rx_mode(adapter
->netdev
);
3345 e1000_restore_vlan(adapter
);
3346 e1000_init_manageability_pt(adapter
);
3348 e1000_configure_tx(adapter
);
3350 if (adapter
->netdev
->features
& NETIF_F_RXHASH
)
3351 e1000e_setup_rss_hash(adapter
);
3352 e1000_setup_rctl(adapter
);
3353 e1000_configure_rx(adapter
);
3354 adapter
->alloc_rx_buf(rx_ring
, e1000_desc_unused(rx_ring
), GFP_KERNEL
);
3358 * e1000e_power_up_phy - restore link in case the phy was powered down
3359 * @adapter: address of board private structure
3361 * The phy may be powered down to save power and turn off link when the
3362 * driver is unloaded and wake on lan is not enabled (among others)
3363 * *** this routine MUST be followed by a call to e1000e_reset ***
3365 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
3367 if (adapter
->hw
.phy
.ops
.power_up
)
3368 adapter
->hw
.phy
.ops
.power_up(&adapter
->hw
);
3370 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
3374 * e1000_power_down_phy - Power down the PHY
3376 * Power down the PHY so no link is implied when interface is down.
3377 * The PHY cannot be powered down if management or WoL is active.
3379 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
3381 /* WoL is enabled */
3385 if (adapter
->hw
.phy
.ops
.power_down
)
3386 adapter
->hw
.phy
.ops
.power_down(&adapter
->hw
);
3390 * e1000e_reset - bring the hardware into a known good state
3392 * This function boots the hardware and enables some settings that
3393 * require a configuration cycle of the hardware - those cannot be
3394 * set/changed during runtime. After reset the device needs to be
3395 * properly configured for Rx, Tx etc.
3397 void e1000e_reset(struct e1000_adapter
*adapter
)
3399 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3400 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
3401 struct e1000_hw
*hw
= &adapter
->hw
;
3402 u32 tx_space
, min_tx_space
, min_rx_space
;
3403 u32 pba
= adapter
->pba
;
3406 /* reset Packet Buffer Allocation to default */
3409 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3411 * To maintain wire speed transmits, the Tx FIFO should be
3412 * large enough to accommodate two full transmit packets,
3413 * rounded up to the next 1KB and expressed in KB. Likewise,
3414 * the Rx FIFO should be large enough to accommodate at least
3415 * one full receive packet and is similarly rounded up and
3419 /* upper 16 bits has Tx packet buffer allocation size in KB */
3420 tx_space
= pba
>> 16;
3421 /* lower 16 bits has Rx packet buffer allocation size in KB */
3424 * the Tx fifo also stores 16 bytes of information about the Tx
3425 * but don't include ethernet FCS because hardware appends it
3427 min_tx_space
= (adapter
->max_frame_size
+
3428 sizeof(struct e1000_tx_desc
) -
3430 min_tx_space
= ALIGN(min_tx_space
, 1024);
3431 min_tx_space
>>= 10;
3432 /* software strips receive CRC, so leave room for it */
3433 min_rx_space
= adapter
->max_frame_size
;
3434 min_rx_space
= ALIGN(min_rx_space
, 1024);
3435 min_rx_space
>>= 10;
3438 * If current Tx allocation is less than the min Tx FIFO size,
3439 * and the min Tx FIFO size is less than the current Rx FIFO
3440 * allocation, take space away from current Rx allocation
3442 if ((tx_space
< min_tx_space
) &&
3443 ((min_tx_space
- tx_space
) < pba
)) {
3444 pba
-= min_tx_space
- tx_space
;
3447 * if short on Rx space, Rx wins and must trump Tx
3448 * adjustment or use Early Receive if available
3450 if (pba
< min_rx_space
)
3458 * flow control settings
3460 * The high water mark must be low enough to fit one full frame
3461 * (or the size used for early receive) above it in the Rx FIFO.
3462 * Set it to the lower of:
3463 * - 90% of the Rx FIFO size, and
3464 * - the full Rx FIFO size minus one full frame
3466 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
3467 fc
->pause_time
= 0xFFFF;
3469 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
3470 fc
->send_xon
= true;
3471 fc
->current_mode
= fc
->requested_mode
;
3473 switch (hw
->mac
.type
) {
3475 case e1000_ich10lan
:
3476 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3479 fc
->high_water
= 0x2800;
3480 fc
->low_water
= fc
->high_water
- 8;
3485 hwm
= min(((pba
<< 10) * 9 / 10),
3486 ((pba
<< 10) - adapter
->max_frame_size
));
3488 fc
->high_water
= hwm
& E1000_FCRTH_RTH
; /* 8-byte granularity */
3489 fc
->low_water
= fc
->high_water
- 8;
3493 * Workaround PCH LOM adapter hangs with certain network
3494 * loads. If hangs persist, try disabling Tx flow control.
3496 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3497 fc
->high_water
= 0x3500;
3498 fc
->low_water
= 0x1500;
3500 fc
->high_water
= 0x5000;
3501 fc
->low_water
= 0x3000;
3503 fc
->refresh_time
= 0x1000;
3506 fc
->high_water
= 0x05C20;
3507 fc
->low_water
= 0x05048;
3508 fc
->pause_time
= 0x0650;
3509 fc
->refresh_time
= 0x0400;
3510 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3518 * Disable Adaptive Interrupt Moderation if 2 full packets cannot
3519 * fit in receive buffer.
3521 if (adapter
->itr_setting
& 0x3) {
3522 if ((adapter
->max_frame_size
* 2) > (pba
<< 10)) {
3523 if (!(adapter
->flags2
& FLAG2_DISABLE_AIM
)) {
3524 dev_info(&adapter
->pdev
->dev
,
3525 "Interrupt Throttle Rate turned off\n");
3526 adapter
->flags2
|= FLAG2_DISABLE_AIM
;
3529 } else if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
3530 dev_info(&adapter
->pdev
->dev
,
3531 "Interrupt Throttle Rate turned on\n");
3532 adapter
->flags2
&= ~FLAG2_DISABLE_AIM
;
3533 adapter
->itr
= 20000;
3534 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
3538 /* Allow time for pending master requests to run */
3539 mac
->ops
.reset_hw(hw
);
3542 * For parts with AMT enabled, let the firmware know
3543 * that the network interface is in control
3545 if (adapter
->flags
& FLAG_HAS_AMT
)
3546 e1000e_get_hw_control(adapter
);
3550 if (mac
->ops
.init_hw(hw
))
3551 e_err("Hardware Error\n");
3553 e1000_update_mng_vlan(adapter
);
3555 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3556 ew32(VET
, ETH_P_8021Q
);
3558 e1000e_reset_adaptive(hw
);
3560 if (!netif_running(adapter
->netdev
) &&
3561 !test_bit(__E1000_TESTING
, &adapter
->state
)) {
3562 e1000_power_down_phy(adapter
);
3566 e1000_get_phy_info(hw
);
3568 if ((adapter
->flags
& FLAG_HAS_SMART_POWER_DOWN
) &&
3569 !(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
3572 * speed up time to link by disabling smart power down, ignore
3573 * the return value of this function because there is nothing
3574 * different we would do if it failed
3576 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
3577 phy_data
&= ~IGP02E1000_PM_SPD
;
3578 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
3582 int e1000e_up(struct e1000_adapter
*adapter
)
3584 struct e1000_hw
*hw
= &adapter
->hw
;
3586 /* hardware has been reset, we need to reload some things */
3587 e1000_configure(adapter
);
3589 clear_bit(__E1000_DOWN
, &adapter
->state
);
3591 if (adapter
->msix_entries
)
3592 e1000_configure_msix(adapter
);
3593 e1000_irq_enable(adapter
);
3595 netif_start_queue(adapter
->netdev
);
3597 /* fire a link change interrupt to start the watchdog */
3598 if (adapter
->msix_entries
)
3599 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
3601 ew32(ICS
, E1000_ICS_LSC
);
3606 static void e1000e_flush_descriptors(struct e1000_adapter
*adapter
)
3608 struct e1000_hw
*hw
= &adapter
->hw
;
3610 if (!(adapter
->flags2
& FLAG2_DMA_BURST
))
3613 /* flush pending descriptor writebacks to memory */
3614 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
3615 ew32(RDTR
, adapter
->rx_int_delay
| E1000_RDTR_FPD
);
3617 /* execute the writes immediately */
3621 static void e1000e_update_stats(struct e1000_adapter
*adapter
);
3623 void e1000e_down(struct e1000_adapter
*adapter
)
3625 struct net_device
*netdev
= adapter
->netdev
;
3626 struct e1000_hw
*hw
= &adapter
->hw
;
3630 * signal that we're down so the interrupt handler does not
3631 * reschedule our watchdog timer
3633 set_bit(__E1000_DOWN
, &adapter
->state
);
3635 /* disable receives in the hardware */
3637 if (!(adapter
->flags2
& FLAG2_NO_DISABLE_RX
))
3638 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3639 /* flush and sleep below */
3641 netif_stop_queue(netdev
);
3643 /* disable transmits in the hardware */
3645 tctl
&= ~E1000_TCTL_EN
;
3648 /* flush both disables and wait for them to finish */
3650 usleep_range(10000, 20000);
3652 e1000_irq_disable(adapter
);
3654 del_timer_sync(&adapter
->watchdog_timer
);
3655 del_timer_sync(&adapter
->phy_info_timer
);
3657 netif_carrier_off(netdev
);
3659 spin_lock(&adapter
->stats64_lock
);
3660 e1000e_update_stats(adapter
);
3661 spin_unlock(&adapter
->stats64_lock
);
3663 e1000e_flush_descriptors(adapter
);
3664 e1000_clean_tx_ring(adapter
->tx_ring
);
3665 e1000_clean_rx_ring(adapter
->rx_ring
);
3667 adapter
->link_speed
= 0;
3668 adapter
->link_duplex
= 0;
3670 if (!pci_channel_offline(adapter
->pdev
))
3671 e1000e_reset(adapter
);
3674 * TODO: for power management, we could drop the link and
3675 * pci_disable_device here.
3679 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
3682 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
3683 usleep_range(1000, 2000);
3684 e1000e_down(adapter
);
3686 clear_bit(__E1000_RESETTING
, &adapter
->state
);
3690 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
3691 * @adapter: board private structure to initialize
3693 * e1000_sw_init initializes the Adapter private data structure.
3694 * Fields are initialized based on PCI device information and
3695 * OS network device settings (MTU size).
3697 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
3699 struct net_device
*netdev
= adapter
->netdev
;
3701 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
3702 adapter
->rx_ps_bsize0
= 128;
3703 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3704 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
3705 adapter
->tx_ring_count
= E1000_DEFAULT_TXD
;
3706 adapter
->rx_ring_count
= E1000_DEFAULT_RXD
;
3708 spin_lock_init(&adapter
->stats64_lock
);
3710 e1000e_set_interrupt_capability(adapter
);
3712 if (e1000_alloc_queues(adapter
))
3715 /* Explicitly disable IRQ since the NIC can be in any state. */
3716 e1000_irq_disable(adapter
);
3718 set_bit(__E1000_DOWN
, &adapter
->state
);
3723 * e1000_intr_msi_test - Interrupt Handler
3724 * @irq: interrupt number
3725 * @data: pointer to a network interface device structure
3727 static irqreturn_t
e1000_intr_msi_test(int irq
, void *data
)
3729 struct net_device
*netdev
= data
;
3730 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3731 struct e1000_hw
*hw
= &adapter
->hw
;
3732 u32 icr
= er32(ICR
);
3734 e_dbg("icr is %08X\n", icr
);
3735 if (icr
& E1000_ICR_RXSEQ
) {
3736 adapter
->flags
&= ~FLAG_MSI_TEST_FAILED
;
3744 * e1000_test_msi_interrupt - Returns 0 for successful test
3745 * @adapter: board private struct
3747 * code flow taken from tg3.c
3749 static int e1000_test_msi_interrupt(struct e1000_adapter
*adapter
)
3751 struct net_device
*netdev
= adapter
->netdev
;
3752 struct e1000_hw
*hw
= &adapter
->hw
;
3755 /* poll_enable hasn't been called yet, so don't need disable */
3756 /* clear any pending events */
3759 /* free the real vector and request a test handler */
3760 e1000_free_irq(adapter
);
3761 e1000e_reset_interrupt_capability(adapter
);
3763 /* Assume that the test fails, if it succeeds then the test
3764 * MSI irq handler will unset this flag */
3765 adapter
->flags
|= FLAG_MSI_TEST_FAILED
;
3767 err
= pci_enable_msi(adapter
->pdev
);
3769 goto msi_test_failed
;
3771 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi_test
, 0,
3772 netdev
->name
, netdev
);
3774 pci_disable_msi(adapter
->pdev
);
3775 goto msi_test_failed
;
3780 e1000_irq_enable(adapter
);
3782 /* fire an unusual interrupt on the test handler */
3783 ew32(ICS
, E1000_ICS_RXSEQ
);
3787 e1000_irq_disable(adapter
);
3791 if (adapter
->flags
& FLAG_MSI_TEST_FAILED
) {
3792 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
3793 e_info("MSI interrupt test failed, using legacy interrupt.\n");
3795 e_dbg("MSI interrupt test succeeded!\n");
3798 free_irq(adapter
->pdev
->irq
, netdev
);
3799 pci_disable_msi(adapter
->pdev
);
3802 e1000e_set_interrupt_capability(adapter
);
3803 return e1000_request_irq(adapter
);
3807 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3808 * @adapter: board private struct
3810 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3812 static int e1000_test_msi(struct e1000_adapter
*adapter
)
3817 if (!(adapter
->flags
& FLAG_MSI_ENABLED
))
3820 /* disable SERR in case the MSI write causes a master abort */
3821 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3822 if (pci_cmd
& PCI_COMMAND_SERR
)
3823 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
,
3824 pci_cmd
& ~PCI_COMMAND_SERR
);
3826 err
= e1000_test_msi_interrupt(adapter
);
3828 /* re-enable SERR */
3829 if (pci_cmd
& PCI_COMMAND_SERR
) {
3830 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3831 pci_cmd
|= PCI_COMMAND_SERR
;
3832 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
, pci_cmd
);
3839 * e1000_open - Called when a network interface is made active
3840 * @netdev: network interface device structure
3842 * Returns 0 on success, negative value on failure
3844 * The open entry point is called when a network interface is made
3845 * active by the system (IFF_UP). At this point all resources needed
3846 * for transmit and receive operations are allocated, the interrupt
3847 * handler is registered with the OS, the watchdog timer is started,
3848 * and the stack is notified that the interface is ready.
3850 static int e1000_open(struct net_device
*netdev
)
3852 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3853 struct e1000_hw
*hw
= &adapter
->hw
;
3854 struct pci_dev
*pdev
= adapter
->pdev
;
3857 /* disallow open during test */
3858 if (test_bit(__E1000_TESTING
, &adapter
->state
))
3861 pm_runtime_get_sync(&pdev
->dev
);
3863 netif_carrier_off(netdev
);
3865 /* allocate transmit descriptors */
3866 err
= e1000e_setup_tx_resources(adapter
->tx_ring
);
3870 /* allocate receive descriptors */
3871 err
= e1000e_setup_rx_resources(adapter
->rx_ring
);
3876 * If AMT is enabled, let the firmware know that the network
3877 * interface is now open and reset the part to a known state.
3879 if (adapter
->flags
& FLAG_HAS_AMT
) {
3880 e1000e_get_hw_control(adapter
);
3881 e1000e_reset(adapter
);
3884 e1000e_power_up_phy(adapter
);
3886 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
3887 if ((adapter
->hw
.mng_cookie
.status
&
3888 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
3889 e1000_update_mng_vlan(adapter
);
3891 /* DMA latency requirement to workaround jumbo issue */
3892 if (adapter
->hw
.mac
.type
== e1000_pch2lan
)
3893 pm_qos_add_request(&adapter
->netdev
->pm_qos_req
,
3894 PM_QOS_CPU_DMA_LATENCY
,
3895 PM_QOS_DEFAULT_VALUE
);
3898 * before we allocate an interrupt, we must be ready to handle it.
3899 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3900 * as soon as we call pci_request_irq, so we have to setup our
3901 * clean_rx handler before we do so.
3903 e1000_configure(adapter
);
3905 err
= e1000_request_irq(adapter
);
3910 * Work around PCIe errata with MSI interrupts causing some chipsets to
3911 * ignore e1000e MSI messages, which means we need to test our MSI
3914 if (adapter
->int_mode
!= E1000E_INT_MODE_LEGACY
) {
3915 err
= e1000_test_msi(adapter
);
3917 e_err("Interrupt allocation failed\n");
3922 /* From here on the code is the same as e1000e_up() */
3923 clear_bit(__E1000_DOWN
, &adapter
->state
);
3925 napi_enable(&adapter
->napi
);
3927 e1000_irq_enable(adapter
);
3929 adapter
->tx_hang_recheck
= false;
3930 netif_start_queue(netdev
);
3932 adapter
->idle_check
= true;
3933 pm_runtime_put(&pdev
->dev
);
3935 /* fire a link status change interrupt to start the watchdog */
3936 if (adapter
->msix_entries
)
3937 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
3939 ew32(ICS
, E1000_ICS_LSC
);
3944 e1000e_release_hw_control(adapter
);
3945 e1000_power_down_phy(adapter
);
3946 e1000e_free_rx_resources(adapter
->rx_ring
);
3948 e1000e_free_tx_resources(adapter
->tx_ring
);
3950 e1000e_reset(adapter
);
3951 pm_runtime_put_sync(&pdev
->dev
);
3957 * e1000_close - Disables a network interface
3958 * @netdev: network interface device structure
3960 * Returns 0, this is not allowed to fail
3962 * The close entry point is called when an interface is de-activated
3963 * by the OS. The hardware is still under the drivers control, but
3964 * needs to be disabled. A global MAC reset is issued to stop the
3965 * hardware, and all transmit and receive resources are freed.
3967 static int e1000_close(struct net_device
*netdev
)
3969 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3970 struct pci_dev
*pdev
= adapter
->pdev
;
3972 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
3974 pm_runtime_get_sync(&pdev
->dev
);
3976 napi_disable(&adapter
->napi
);
3978 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
3979 e1000e_down(adapter
);
3980 e1000_free_irq(adapter
);
3982 e1000_power_down_phy(adapter
);
3984 e1000e_free_tx_resources(adapter
->tx_ring
);
3985 e1000e_free_rx_resources(adapter
->rx_ring
);
3988 * kill manageability vlan ID if supported, but not if a vlan with
3989 * the same ID is registered on the host OS (let 8021q kill it)
3991 if (adapter
->hw
.mng_cookie
.status
&
3992 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)
3993 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
3996 * If AMT is enabled, let the firmware know that the network
3997 * interface is now closed
3999 if ((adapter
->flags
& FLAG_HAS_AMT
) &&
4000 !test_bit(__E1000_TESTING
, &adapter
->state
))
4001 e1000e_release_hw_control(adapter
);
4003 if (adapter
->hw
.mac
.type
== e1000_pch2lan
)
4004 pm_qos_remove_request(&adapter
->netdev
->pm_qos_req
);
4006 pm_runtime_put_sync(&pdev
->dev
);
4011 * e1000_set_mac - Change the Ethernet Address of the NIC
4012 * @netdev: network interface device structure
4013 * @p: pointer to an address structure
4015 * Returns 0 on success, negative on failure
4017 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
4019 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4020 struct sockaddr
*addr
= p
;
4022 if (!is_valid_ether_addr(addr
->sa_data
))
4023 return -EADDRNOTAVAIL
;
4025 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
4026 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
4028 e1000e_rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
4030 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
4031 /* activate the work around */
4032 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
4035 * Hold a copy of the LAA in RAR[14] This is done so that
4036 * between the time RAR[0] gets clobbered and the time it
4037 * gets fixed (in e1000_watchdog), the actual LAA is in one
4038 * of the RARs and no incoming packets directed to this port
4039 * are dropped. Eventually the LAA will be in RAR[0] and
4042 e1000e_rar_set(&adapter
->hw
,
4043 adapter
->hw
.mac
.addr
,
4044 adapter
->hw
.mac
.rar_entry_count
- 1);
4051 * e1000e_update_phy_task - work thread to update phy
4052 * @work: pointer to our work struct
4054 * this worker thread exists because we must acquire a
4055 * semaphore to read the phy, which we could msleep while
4056 * waiting for it, and we can't msleep in a timer.
4058 static void e1000e_update_phy_task(struct work_struct
*work
)
4060 struct e1000_adapter
*adapter
= container_of(work
,
4061 struct e1000_adapter
, update_phy_task
);
4063 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4066 e1000_get_phy_info(&adapter
->hw
);
4070 * Need to wait a few seconds after link up to get diagnostic information from
4073 static void e1000_update_phy_info(unsigned long data
)
4075 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
4077 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4080 schedule_work(&adapter
->update_phy_task
);
4084 * e1000e_update_phy_stats - Update the PHY statistics counters
4085 * @adapter: board private structure
4087 * Read/clear the upper 16-bit PHY registers and read/accumulate lower
4089 static void e1000e_update_phy_stats(struct e1000_adapter
*adapter
)
4091 struct e1000_hw
*hw
= &adapter
->hw
;
4095 ret_val
= hw
->phy
.ops
.acquire(hw
);
4100 * A page set is expensive so check if already on desired page.
4101 * If not, set to the page with the PHY status registers.
4104 ret_val
= e1000e_read_phy_reg_mdic(hw
, IGP01E1000_PHY_PAGE_SELECT
,
4108 if (phy_data
!= (HV_STATS_PAGE
<< IGP_PAGE_SHIFT
)) {
4109 ret_val
= hw
->phy
.ops
.set_page(hw
,
4110 HV_STATS_PAGE
<< IGP_PAGE_SHIFT
);
4115 /* Single Collision Count */
4116 hw
->phy
.ops
.read_reg_page(hw
, HV_SCC_UPPER
, &phy_data
);
4117 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_SCC_LOWER
, &phy_data
);
4119 adapter
->stats
.scc
+= phy_data
;
4121 /* Excessive Collision Count */
4122 hw
->phy
.ops
.read_reg_page(hw
, HV_ECOL_UPPER
, &phy_data
);
4123 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_ECOL_LOWER
, &phy_data
);
4125 adapter
->stats
.ecol
+= phy_data
;
4127 /* Multiple Collision Count */
4128 hw
->phy
.ops
.read_reg_page(hw
, HV_MCC_UPPER
, &phy_data
);
4129 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_MCC_LOWER
, &phy_data
);
4131 adapter
->stats
.mcc
+= phy_data
;
4133 /* Late Collision Count */
4134 hw
->phy
.ops
.read_reg_page(hw
, HV_LATECOL_UPPER
, &phy_data
);
4135 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_LATECOL_LOWER
, &phy_data
);
4137 adapter
->stats
.latecol
+= phy_data
;
4139 /* Collision Count - also used for adaptive IFS */
4140 hw
->phy
.ops
.read_reg_page(hw
, HV_COLC_UPPER
, &phy_data
);
4141 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_COLC_LOWER
, &phy_data
);
4143 hw
->mac
.collision_delta
= phy_data
;
4146 hw
->phy
.ops
.read_reg_page(hw
, HV_DC_UPPER
, &phy_data
);
4147 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_DC_LOWER
, &phy_data
);
4149 adapter
->stats
.dc
+= phy_data
;
4151 /* Transmit with no CRS */
4152 hw
->phy
.ops
.read_reg_page(hw
, HV_TNCRS_UPPER
, &phy_data
);
4153 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_TNCRS_LOWER
, &phy_data
);
4155 adapter
->stats
.tncrs
+= phy_data
;
4158 hw
->phy
.ops
.release(hw
);
4162 * e1000e_update_stats - Update the board statistics counters
4163 * @adapter: board private structure
4165 static void e1000e_update_stats(struct e1000_adapter
*adapter
)
4167 struct net_device
*netdev
= adapter
->netdev
;
4168 struct e1000_hw
*hw
= &adapter
->hw
;
4169 struct pci_dev
*pdev
= adapter
->pdev
;
4172 * Prevent stats update while adapter is being reset, or if the pci
4173 * connection is down.
4175 if (adapter
->link_speed
== 0)
4177 if (pci_channel_offline(pdev
))
4180 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
4181 adapter
->stats
.gprc
+= er32(GPRC
);
4182 adapter
->stats
.gorc
+= er32(GORCL
);
4183 er32(GORCH
); /* Clear gorc */
4184 adapter
->stats
.bprc
+= er32(BPRC
);
4185 adapter
->stats
.mprc
+= er32(MPRC
);
4186 adapter
->stats
.roc
+= er32(ROC
);
4188 adapter
->stats
.mpc
+= er32(MPC
);
4190 /* Half-duplex statistics */
4191 if (adapter
->link_duplex
== HALF_DUPLEX
) {
4192 if (adapter
->flags2
& FLAG2_HAS_PHY_STATS
) {
4193 e1000e_update_phy_stats(adapter
);
4195 adapter
->stats
.scc
+= er32(SCC
);
4196 adapter
->stats
.ecol
+= er32(ECOL
);
4197 adapter
->stats
.mcc
+= er32(MCC
);
4198 adapter
->stats
.latecol
+= er32(LATECOL
);
4199 adapter
->stats
.dc
+= er32(DC
);
4201 hw
->mac
.collision_delta
= er32(COLC
);
4203 if ((hw
->mac
.type
!= e1000_82574
) &&
4204 (hw
->mac
.type
!= e1000_82583
))
4205 adapter
->stats
.tncrs
+= er32(TNCRS
);
4207 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
4210 adapter
->stats
.xonrxc
+= er32(XONRXC
);
4211 adapter
->stats
.xontxc
+= er32(XONTXC
);
4212 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
4213 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
4214 adapter
->stats
.gptc
+= er32(GPTC
);
4215 adapter
->stats
.gotc
+= er32(GOTCL
);
4216 er32(GOTCH
); /* Clear gotc */
4217 adapter
->stats
.rnbc
+= er32(RNBC
);
4218 adapter
->stats
.ruc
+= er32(RUC
);
4220 adapter
->stats
.mptc
+= er32(MPTC
);
4221 adapter
->stats
.bptc
+= er32(BPTC
);
4223 /* used for adaptive IFS */
4225 hw
->mac
.tx_packet_delta
= er32(TPT
);
4226 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
4228 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
4229 adapter
->stats
.rxerrc
+= er32(RXERRC
);
4230 adapter
->stats
.cexterr
+= er32(CEXTERR
);
4231 adapter
->stats
.tsctc
+= er32(TSCTC
);
4232 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
4234 /* Fill out the OS statistics structure */
4235 netdev
->stats
.multicast
= adapter
->stats
.mprc
;
4236 netdev
->stats
.collisions
= adapter
->stats
.colc
;
4241 * RLEC on some newer hardware can be incorrect so build
4242 * our own version based on RUC and ROC
4244 netdev
->stats
.rx_errors
= adapter
->stats
.rxerrc
+
4245 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
4246 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
4247 adapter
->stats
.cexterr
;
4248 netdev
->stats
.rx_length_errors
= adapter
->stats
.ruc
+
4250 netdev
->stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
4251 netdev
->stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
4252 netdev
->stats
.rx_missed_errors
= adapter
->stats
.mpc
;
4255 netdev
->stats
.tx_errors
= adapter
->stats
.ecol
+
4256 adapter
->stats
.latecol
;
4257 netdev
->stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
4258 netdev
->stats
.tx_window_errors
= adapter
->stats
.latecol
;
4259 netdev
->stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
4261 /* Tx Dropped needs to be maintained elsewhere */
4263 /* Management Stats */
4264 adapter
->stats
.mgptc
+= er32(MGTPTC
);
4265 adapter
->stats
.mgprc
+= er32(MGTPRC
);
4266 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
4270 * e1000_phy_read_status - Update the PHY register status snapshot
4271 * @adapter: board private structure
4273 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
4275 struct e1000_hw
*hw
= &adapter
->hw
;
4276 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
4278 if ((er32(STATUS
) & E1000_STATUS_LU
) &&
4279 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
4282 ret_val
= e1e_rphy(hw
, PHY_CONTROL
, &phy
->bmcr
);
4283 ret_val
|= e1e_rphy(hw
, PHY_STATUS
, &phy
->bmsr
);
4284 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_ADV
, &phy
->advertise
);
4285 ret_val
|= e1e_rphy(hw
, PHY_LP_ABILITY
, &phy
->lpa
);
4286 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_EXP
, &phy
->expansion
);
4287 ret_val
|= e1e_rphy(hw
, PHY_1000T_CTRL
, &phy
->ctrl1000
);
4288 ret_val
|= e1e_rphy(hw
, PHY_1000T_STATUS
, &phy
->stat1000
);
4289 ret_val
|= e1e_rphy(hw
, PHY_EXT_STATUS
, &phy
->estatus
);
4291 e_warn("Error reading PHY register\n");
4294 * Do not read PHY registers if link is not up
4295 * Set values to typical power-on defaults
4297 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
4298 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
4299 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
4301 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
4302 ADVERTISE_ALL
| ADVERTISE_CSMA
);
4304 phy
->expansion
= EXPANSION_ENABLENPAGE
;
4305 phy
->ctrl1000
= ADVERTISE_1000FULL
;
4307 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
4311 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
4313 struct e1000_hw
*hw
= &adapter
->hw
;
4314 u32 ctrl
= er32(CTRL
);
4316 /* Link status message must follow this format for user tools */
4317 printk(KERN_INFO
"e1000e: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n",
4318 adapter
->netdev
->name
,
4319 adapter
->link_speed
,
4320 adapter
->link_duplex
== FULL_DUPLEX
? "Full" : "Half",
4321 (ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
) ? "Rx/Tx" :
4322 (ctrl
& E1000_CTRL_RFCE
) ? "Rx" :
4323 (ctrl
& E1000_CTRL_TFCE
) ? "Tx" : "None");
4326 static bool e1000e_has_link(struct e1000_adapter
*adapter
)
4328 struct e1000_hw
*hw
= &adapter
->hw
;
4329 bool link_active
= false;
4333 * get_link_status is set on LSC (link status) interrupt or
4334 * Rx sequence error interrupt. get_link_status will stay
4335 * false until the check_for_link establishes link
4336 * for copper adapters ONLY
4338 switch (hw
->phy
.media_type
) {
4339 case e1000_media_type_copper
:
4340 if (hw
->mac
.get_link_status
) {
4341 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4342 link_active
= !hw
->mac
.get_link_status
;
4347 case e1000_media_type_fiber
:
4348 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4349 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
4351 case e1000_media_type_internal_serdes
:
4352 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4353 link_active
= adapter
->hw
.mac
.serdes_has_link
;
4356 case e1000_media_type_unknown
:
4360 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
4361 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
4362 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
4363 e_info("Gigabit has been disabled, downgrading speed\n");
4369 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
4371 /* make sure the receive unit is started */
4372 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
4373 (adapter
->flags
& FLAG_RX_RESTART_NOW
)) {
4374 struct e1000_hw
*hw
= &adapter
->hw
;
4375 u32 rctl
= er32(RCTL
);
4376 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
4377 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
4381 static void e1000e_check_82574_phy_workaround(struct e1000_adapter
*adapter
)
4383 struct e1000_hw
*hw
= &adapter
->hw
;
4386 * With 82574 controllers, PHY needs to be checked periodically
4387 * for hung state and reset, if two calls return true
4389 if (e1000_check_phy_82574(hw
))
4390 adapter
->phy_hang_count
++;
4392 adapter
->phy_hang_count
= 0;
4394 if (adapter
->phy_hang_count
> 1) {
4395 adapter
->phy_hang_count
= 0;
4396 schedule_work(&adapter
->reset_task
);
4401 * e1000_watchdog - Timer Call-back
4402 * @data: pointer to adapter cast into an unsigned long
4404 static void e1000_watchdog(unsigned long data
)
4406 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
4408 /* Do the rest outside of interrupt context */
4409 schedule_work(&adapter
->watchdog_task
);
4411 /* TODO: make this use queue_delayed_work() */
4414 static void e1000_watchdog_task(struct work_struct
*work
)
4416 struct e1000_adapter
*adapter
= container_of(work
,
4417 struct e1000_adapter
, watchdog_task
);
4418 struct net_device
*netdev
= adapter
->netdev
;
4419 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
4420 struct e1000_phy_info
*phy
= &adapter
->hw
.phy
;
4421 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4422 struct e1000_hw
*hw
= &adapter
->hw
;
4425 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4428 link
= e1000e_has_link(adapter
);
4429 if ((netif_carrier_ok(netdev
)) && link
) {
4430 /* Cancel scheduled suspend requests. */
4431 pm_runtime_resume(netdev
->dev
.parent
);
4433 e1000e_enable_receives(adapter
);
4437 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
4438 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
4439 e1000_update_mng_vlan(adapter
);
4442 if (!netif_carrier_ok(netdev
)) {
4445 /* Cancel scheduled suspend requests. */
4446 pm_runtime_resume(netdev
->dev
.parent
);
4448 /* update snapshot of PHY registers on LSC */
4449 e1000_phy_read_status(adapter
);
4450 mac
->ops
.get_link_up_info(&adapter
->hw
,
4451 &adapter
->link_speed
,
4452 &adapter
->link_duplex
);
4453 e1000_print_link_info(adapter
);
4455 * On supported PHYs, check for duplex mismatch only
4456 * if link has autonegotiated at 10/100 half
4458 if ((hw
->phy
.type
== e1000_phy_igp_3
||
4459 hw
->phy
.type
== e1000_phy_bm
) &&
4460 (hw
->mac
.autoneg
== true) &&
4461 (adapter
->link_speed
== SPEED_10
||
4462 adapter
->link_speed
== SPEED_100
) &&
4463 (adapter
->link_duplex
== HALF_DUPLEX
)) {
4466 e1e_rphy(hw
, PHY_AUTONEG_EXP
, &autoneg_exp
);
4468 if (!(autoneg_exp
& NWAY_ER_LP_NWAY_CAPS
))
4469 e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n");
4472 /* adjust timeout factor according to speed/duplex */
4473 adapter
->tx_timeout_factor
= 1;
4474 switch (adapter
->link_speed
) {
4477 adapter
->tx_timeout_factor
= 16;
4481 adapter
->tx_timeout_factor
= 10;
4486 * workaround: re-program speed mode bit after
4489 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
4492 tarc0
= er32(TARC(0));
4493 tarc0
&= ~SPEED_MODE_BIT
;
4494 ew32(TARC(0), tarc0
);
4498 * disable TSO for pcie and 10/100 speeds, to avoid
4499 * some hardware issues
4501 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
4502 switch (adapter
->link_speed
) {
4505 e_info("10/100 speed: disabling TSO\n");
4506 netdev
->features
&= ~NETIF_F_TSO
;
4507 netdev
->features
&= ~NETIF_F_TSO6
;
4510 netdev
->features
|= NETIF_F_TSO
;
4511 netdev
->features
|= NETIF_F_TSO6
;
4520 * enable transmits in the hardware, need to do this
4521 * after setting TARC(0)
4524 tctl
|= E1000_TCTL_EN
;
4528 * Perform any post-link-up configuration before
4529 * reporting link up.
4531 if (phy
->ops
.cfg_on_link_up
)
4532 phy
->ops
.cfg_on_link_up(hw
);
4534 netif_carrier_on(netdev
);
4536 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4537 mod_timer(&adapter
->phy_info_timer
,
4538 round_jiffies(jiffies
+ 2 * HZ
));
4541 if (netif_carrier_ok(netdev
)) {
4542 adapter
->link_speed
= 0;
4543 adapter
->link_duplex
= 0;
4544 /* Link status message must follow this format */
4545 printk(KERN_INFO
"e1000e: %s NIC Link is Down\n",
4546 adapter
->netdev
->name
);
4547 netif_carrier_off(netdev
);
4548 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4549 mod_timer(&adapter
->phy_info_timer
,
4550 round_jiffies(jiffies
+ 2 * HZ
));
4552 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
4553 schedule_work(&adapter
->reset_task
);
4555 pm_schedule_suspend(netdev
->dev
.parent
,
4561 spin_lock(&adapter
->stats64_lock
);
4562 e1000e_update_stats(adapter
);
4564 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
4565 adapter
->tpt_old
= adapter
->stats
.tpt
;
4566 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
4567 adapter
->colc_old
= adapter
->stats
.colc
;
4569 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
4570 adapter
->gorc_old
= adapter
->stats
.gorc
;
4571 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
4572 adapter
->gotc_old
= adapter
->stats
.gotc
;
4573 spin_unlock(&adapter
->stats64_lock
);
4575 e1000e_update_adaptive(&adapter
->hw
);
4577 if (!netif_carrier_ok(netdev
) &&
4578 (e1000_desc_unused(tx_ring
) + 1 < tx_ring
->count
)) {
4580 * We've lost link, so the controller stops DMA,
4581 * but we've got queued Tx work that's never going
4582 * to get done, so reset controller to flush Tx.
4583 * (Do the reset outside of interrupt context).
4585 schedule_work(&adapter
->reset_task
);
4586 /* return immediately since reset is imminent */
4590 /* Simple mode for Interrupt Throttle Rate (ITR) */
4591 if (adapter
->itr_setting
== 4) {
4593 * Symmetric Tx/Rx gets a reduced ITR=2000;
4594 * Total asymmetrical Tx or Rx gets ITR=8000;
4595 * everyone else is between 2000-8000.
4597 u32 goc
= (adapter
->gotc
+ adapter
->gorc
) / 10000;
4598 u32 dif
= (adapter
->gotc
> adapter
->gorc
?
4599 adapter
->gotc
- adapter
->gorc
:
4600 adapter
->gorc
- adapter
->gotc
) / 10000;
4601 u32 itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
4603 ew32(ITR
, 1000000000 / (itr
* 256));
4606 /* Cause software interrupt to ensure Rx ring is cleaned */
4607 if (adapter
->msix_entries
)
4608 ew32(ICS
, adapter
->rx_ring
->ims_val
);
4610 ew32(ICS
, E1000_ICS_RXDMT0
);
4612 /* flush pending descriptors to memory before detecting Tx hang */
4613 e1000e_flush_descriptors(adapter
);
4615 /* Force detection of hung controller every watchdog period */
4616 adapter
->detect_tx_hung
= true;
4619 * With 82571 controllers, LAA may be overwritten due to controller
4620 * reset from the other port. Set the appropriate LAA in RAR[0]
4622 if (e1000e_get_laa_state_82571(hw
))
4623 e1000e_rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
4625 if (adapter
->flags2
& FLAG2_CHECK_PHY_HANG
)
4626 e1000e_check_82574_phy_workaround(adapter
);
4628 /* Reset the timer */
4629 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4630 mod_timer(&adapter
->watchdog_timer
,
4631 round_jiffies(jiffies
+ 2 * HZ
));
4634 #define E1000_TX_FLAGS_CSUM 0x00000001
4635 #define E1000_TX_FLAGS_VLAN 0x00000002
4636 #define E1000_TX_FLAGS_TSO 0x00000004
4637 #define E1000_TX_FLAGS_IPV4 0x00000008
4638 #define E1000_TX_FLAGS_NO_FCS 0x00000010
4639 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
4640 #define E1000_TX_FLAGS_VLAN_SHIFT 16
4642 static int e1000_tso(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
)
4644 struct e1000_context_desc
*context_desc
;
4645 struct e1000_buffer
*buffer_info
;
4648 u16 ipcse
= 0, tucse
, mss
;
4649 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
4651 if (!skb_is_gso(skb
))
4654 if (skb_header_cloned(skb
)) {
4655 int err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
4661 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
4662 mss
= skb_shinfo(skb
)->gso_size
;
4663 if (skb
->protocol
== htons(ETH_P_IP
)) {
4664 struct iphdr
*iph
= ip_hdr(skb
);
4667 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
, iph
->daddr
,
4669 cmd_length
= E1000_TXD_CMD_IP
;
4670 ipcse
= skb_transport_offset(skb
) - 1;
4671 } else if (skb_is_gso_v6(skb
)) {
4672 ipv6_hdr(skb
)->payload_len
= 0;
4673 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
4674 &ipv6_hdr(skb
)->daddr
,
4678 ipcss
= skb_network_offset(skb
);
4679 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
4680 tucss
= skb_transport_offset(skb
);
4681 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
4684 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
4685 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
4687 i
= tx_ring
->next_to_use
;
4688 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
4689 buffer_info
= &tx_ring
->buffer_info
[i
];
4691 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
4692 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
4693 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
4694 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
4695 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
4696 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
4697 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
4698 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
4699 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
4701 buffer_info
->time_stamp
= jiffies
;
4702 buffer_info
->next_to_watch
= i
;
4705 if (i
== tx_ring
->count
)
4707 tx_ring
->next_to_use
= i
;
4712 static bool e1000_tx_csum(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
)
4714 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
4715 struct e1000_context_desc
*context_desc
;
4716 struct e1000_buffer
*buffer_info
;
4719 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
4722 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
4725 if (skb
->protocol
== cpu_to_be16(ETH_P_8021Q
))
4726 protocol
= vlan_eth_hdr(skb
)->h_vlan_encapsulated_proto
;
4728 protocol
= skb
->protocol
;
4731 case cpu_to_be16(ETH_P_IP
):
4732 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
4733 cmd_len
|= E1000_TXD_CMD_TCP
;
4735 case cpu_to_be16(ETH_P_IPV6
):
4736 /* XXX not handling all IPV6 headers */
4737 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
4738 cmd_len
|= E1000_TXD_CMD_TCP
;
4741 if (unlikely(net_ratelimit()))
4742 e_warn("checksum_partial proto=%x!\n",
4743 be16_to_cpu(protocol
));
4747 css
= skb_checksum_start_offset(skb
);
4749 i
= tx_ring
->next_to_use
;
4750 buffer_info
= &tx_ring
->buffer_info
[i
];
4751 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
4753 context_desc
->lower_setup
.ip_config
= 0;
4754 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
4755 context_desc
->upper_setup
.tcp_fields
.tucso
=
4756 css
+ skb
->csum_offset
;
4757 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
4758 context_desc
->tcp_seg_setup
.data
= 0;
4759 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
4761 buffer_info
->time_stamp
= jiffies
;
4762 buffer_info
->next_to_watch
= i
;
4765 if (i
== tx_ring
->count
)
4767 tx_ring
->next_to_use
= i
;
4772 #define E1000_MAX_PER_TXD 8192
4773 #define E1000_MAX_TXD_PWR 12
4775 static int e1000_tx_map(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
,
4776 unsigned int first
, unsigned int max_per_txd
,
4777 unsigned int nr_frags
, unsigned int mss
)
4779 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
4780 struct pci_dev
*pdev
= adapter
->pdev
;
4781 struct e1000_buffer
*buffer_info
;
4782 unsigned int len
= skb_headlen(skb
);
4783 unsigned int offset
= 0, size
, count
= 0, i
;
4784 unsigned int f
, bytecount
, segs
;
4786 i
= tx_ring
->next_to_use
;
4789 buffer_info
= &tx_ring
->buffer_info
[i
];
4790 size
= min(len
, max_per_txd
);
4792 buffer_info
->length
= size
;
4793 buffer_info
->time_stamp
= jiffies
;
4794 buffer_info
->next_to_watch
= i
;
4795 buffer_info
->dma
= dma_map_single(&pdev
->dev
,
4797 size
, DMA_TO_DEVICE
);
4798 buffer_info
->mapped_as_page
= false;
4799 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
4808 if (i
== tx_ring
->count
)
4813 for (f
= 0; f
< nr_frags
; f
++) {
4814 const struct skb_frag_struct
*frag
;
4816 frag
= &skb_shinfo(skb
)->frags
[f
];
4817 len
= skb_frag_size(frag
);
4822 if (i
== tx_ring
->count
)
4825 buffer_info
= &tx_ring
->buffer_info
[i
];
4826 size
= min(len
, max_per_txd
);
4828 buffer_info
->length
= size
;
4829 buffer_info
->time_stamp
= jiffies
;
4830 buffer_info
->next_to_watch
= i
;
4831 buffer_info
->dma
= skb_frag_dma_map(&pdev
->dev
, frag
,
4832 offset
, size
, DMA_TO_DEVICE
);
4833 buffer_info
->mapped_as_page
= true;
4834 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
4843 segs
= skb_shinfo(skb
)->gso_segs
? : 1;
4844 /* multiply data chunks by size of headers */
4845 bytecount
= ((segs
- 1) * skb_headlen(skb
)) + skb
->len
;
4847 tx_ring
->buffer_info
[i
].skb
= skb
;
4848 tx_ring
->buffer_info
[i
].segs
= segs
;
4849 tx_ring
->buffer_info
[i
].bytecount
= bytecount
;
4850 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
4855 dev_err(&pdev
->dev
, "Tx DMA map failed\n");
4856 buffer_info
->dma
= 0;
4862 i
+= tx_ring
->count
;
4864 buffer_info
= &tx_ring
->buffer_info
[i
];
4865 e1000_put_txbuf(tx_ring
, buffer_info
);
4871 static void e1000_tx_queue(struct e1000_ring
*tx_ring
, int tx_flags
, int count
)
4873 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
4874 struct e1000_tx_desc
*tx_desc
= NULL
;
4875 struct e1000_buffer
*buffer_info
;
4876 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
4879 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
4880 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
4882 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
4884 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
4885 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
4888 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
4889 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
4890 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
4893 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
4894 txd_lower
|= E1000_TXD_CMD_VLE
;
4895 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
4898 if (unlikely(tx_flags
& E1000_TX_FLAGS_NO_FCS
))
4899 txd_lower
&= ~(E1000_TXD_CMD_IFCS
);
4901 i
= tx_ring
->next_to_use
;
4904 buffer_info
= &tx_ring
->buffer_info
[i
];
4905 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
4906 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4907 tx_desc
->lower
.data
=
4908 cpu_to_le32(txd_lower
| buffer_info
->length
);
4909 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
4912 if (i
== tx_ring
->count
)
4914 } while (--count
> 0);
4916 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
4918 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */
4919 if (unlikely(tx_flags
& E1000_TX_FLAGS_NO_FCS
))
4920 tx_desc
->lower
.data
&= ~(cpu_to_le32(E1000_TXD_CMD_IFCS
));
4923 * Force memory writes to complete before letting h/w
4924 * know there are new descriptors to fetch. (Only
4925 * applicable for weak-ordered memory model archs,
4930 tx_ring
->next_to_use
= i
;
4932 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
4933 e1000e_update_tdt_wa(tx_ring
, i
);
4935 writel(i
, tx_ring
->tail
);
4938 * we need this if more than one processor can write to our tail
4939 * at a time, it synchronizes IO on IA64/Altix systems
4944 #define MINIMUM_DHCP_PACKET_SIZE 282
4945 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
4946 struct sk_buff
*skb
)
4948 struct e1000_hw
*hw
= &adapter
->hw
;
4951 if (vlan_tx_tag_present(skb
)) {
4952 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
4953 (adapter
->hw
.mng_cookie
.status
&
4954 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
4958 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
4961 if (((struct ethhdr
*) skb
->data
)->h_proto
!= htons(ETH_P_IP
))
4965 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+14);
4968 if (ip
->protocol
!= IPPROTO_UDP
)
4971 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
4972 if (ntohs(udp
->dest
) != 67)
4975 offset
= (u8
*)udp
+ 8 - skb
->data
;
4976 length
= skb
->len
- offset
;
4977 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
4983 static int __e1000_maybe_stop_tx(struct e1000_ring
*tx_ring
, int size
)
4985 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
4987 netif_stop_queue(adapter
->netdev
);
4989 * Herbert's original patch had:
4990 * smp_mb__after_netif_stop_queue();
4991 * but since that doesn't exist yet, just open code it.
4996 * We need to check again in a case another CPU has just
4997 * made room available.
4999 if (e1000_desc_unused(tx_ring
) < size
)
5003 netif_start_queue(adapter
->netdev
);
5004 ++adapter
->restart_queue
;
5008 static int e1000_maybe_stop_tx(struct e1000_ring
*tx_ring
, int size
)
5010 if (e1000_desc_unused(tx_ring
) >= size
)
5012 return __e1000_maybe_stop_tx(tx_ring
, size
);
5015 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1)
5016 static netdev_tx_t
e1000_xmit_frame(struct sk_buff
*skb
,
5017 struct net_device
*netdev
)
5019 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5020 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
5022 unsigned int max_per_txd
= E1000_MAX_PER_TXD
;
5023 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
5024 unsigned int tx_flags
= 0;
5025 unsigned int len
= skb_headlen(skb
);
5026 unsigned int nr_frags
;
5032 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
5033 dev_kfree_skb_any(skb
);
5034 return NETDEV_TX_OK
;
5037 if (skb
->len
<= 0) {
5038 dev_kfree_skb_any(skb
);
5039 return NETDEV_TX_OK
;
5042 mss
= skb_shinfo(skb
)->gso_size
;
5044 * The controller does a simple calculation to
5045 * make sure there is enough room in the FIFO before
5046 * initiating the DMA for each buffer. The calc is:
5047 * 4 = ceil(buffer len/mss). To make sure we don't
5048 * overrun the FIFO, adjust the max buffer len if mss
5053 max_per_txd
= min(mss
<< 2, max_per_txd
);
5054 max_txd_pwr
= fls(max_per_txd
) - 1;
5057 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
5058 * points to just header, pull a few bytes of payload from
5059 * frags into skb->data
5061 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
5063 * we do this workaround for ES2LAN, but it is un-necessary,
5064 * avoiding it could save a lot of cycles
5066 if (skb
->data_len
&& (hdr_len
== len
)) {
5067 unsigned int pull_size
;
5069 pull_size
= min_t(unsigned int, 4, skb
->data_len
);
5070 if (!__pskb_pull_tail(skb
, pull_size
)) {
5071 e_err("__pskb_pull_tail failed.\n");
5072 dev_kfree_skb_any(skb
);
5073 return NETDEV_TX_OK
;
5075 len
= skb_headlen(skb
);
5079 /* reserve a descriptor for the offload context */
5080 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
5084 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
5086 nr_frags
= skb_shinfo(skb
)->nr_frags
;
5087 for (f
= 0; f
< nr_frags
; f
++)
5088 count
+= TXD_USE_COUNT(skb_frag_size(&skb_shinfo(skb
)->frags
[f
]),
5091 if (adapter
->hw
.mac
.tx_pkt_filtering
)
5092 e1000_transfer_dhcp_info(adapter
, skb
);
5095 * need: count + 2 desc gap to keep tail from touching
5096 * head, otherwise try next time
5098 if (e1000_maybe_stop_tx(tx_ring
, count
+ 2))
5099 return NETDEV_TX_BUSY
;
5101 if (vlan_tx_tag_present(skb
)) {
5102 tx_flags
|= E1000_TX_FLAGS_VLAN
;
5103 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
5106 first
= tx_ring
->next_to_use
;
5108 tso
= e1000_tso(tx_ring
, skb
);
5110 dev_kfree_skb_any(skb
);
5111 return NETDEV_TX_OK
;
5115 tx_flags
|= E1000_TX_FLAGS_TSO
;
5116 else if (e1000_tx_csum(tx_ring
, skb
))
5117 tx_flags
|= E1000_TX_FLAGS_CSUM
;
5120 * Old method was to assume IPv4 packet by default if TSO was enabled.
5121 * 82571 hardware supports TSO capabilities for IPv6 as well...
5122 * no longer assume, we must.
5124 if (skb
->protocol
== htons(ETH_P_IP
))
5125 tx_flags
|= E1000_TX_FLAGS_IPV4
;
5127 if (unlikely(skb
->no_fcs
))
5128 tx_flags
|= E1000_TX_FLAGS_NO_FCS
;
5130 /* if count is 0 then mapping error has occurred */
5131 count
= e1000_tx_map(tx_ring
, skb
, first
, max_per_txd
, nr_frags
, mss
);
5133 netdev_sent_queue(netdev
, skb
->len
);
5134 e1000_tx_queue(tx_ring
, tx_flags
, count
);
5135 /* Make sure there is space in the ring for the next send. */
5136 e1000_maybe_stop_tx(tx_ring
, MAX_SKB_FRAGS
+ 2);
5139 dev_kfree_skb_any(skb
);
5140 tx_ring
->buffer_info
[first
].time_stamp
= 0;
5141 tx_ring
->next_to_use
= first
;
5144 return NETDEV_TX_OK
;
5148 * e1000_tx_timeout - Respond to a Tx Hang
5149 * @netdev: network interface device structure
5151 static void e1000_tx_timeout(struct net_device
*netdev
)
5153 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5155 /* Do the reset outside of interrupt context */
5156 adapter
->tx_timeout_count
++;
5157 schedule_work(&adapter
->reset_task
);
5160 static void e1000_reset_task(struct work_struct
*work
)
5162 struct e1000_adapter
*adapter
;
5163 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
5165 /* don't run the task if already down */
5166 if (test_bit(__E1000_DOWN
, &adapter
->state
))
5169 if (!((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
5170 (adapter
->flags
& FLAG_RX_RESTART_NOW
))) {
5171 e1000e_dump(adapter
);
5172 e_err("Reset adapter\n");
5174 e1000e_reinit_locked(adapter
);
5178 * e1000_get_stats64 - Get System Network Statistics
5179 * @netdev: network interface device structure
5180 * @stats: rtnl_link_stats64 pointer
5182 * Returns the address of the device statistics structure.
5184 struct rtnl_link_stats64
*e1000e_get_stats64(struct net_device
*netdev
,
5185 struct rtnl_link_stats64
*stats
)
5187 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5189 memset(stats
, 0, sizeof(struct rtnl_link_stats64
));
5190 spin_lock(&adapter
->stats64_lock
);
5191 e1000e_update_stats(adapter
);
5192 /* Fill out the OS statistics structure */
5193 stats
->rx_bytes
= adapter
->stats
.gorc
;
5194 stats
->rx_packets
= adapter
->stats
.gprc
;
5195 stats
->tx_bytes
= adapter
->stats
.gotc
;
5196 stats
->tx_packets
= adapter
->stats
.gptc
;
5197 stats
->multicast
= adapter
->stats
.mprc
;
5198 stats
->collisions
= adapter
->stats
.colc
;
5203 * RLEC on some newer hardware can be incorrect so build
5204 * our own version based on RUC and ROC
5206 stats
->rx_errors
= adapter
->stats
.rxerrc
+
5207 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
5208 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
5209 adapter
->stats
.cexterr
;
5210 stats
->rx_length_errors
= adapter
->stats
.ruc
+
5212 stats
->rx_crc_errors
= adapter
->stats
.crcerrs
;
5213 stats
->rx_frame_errors
= adapter
->stats
.algnerrc
;
5214 stats
->rx_missed_errors
= adapter
->stats
.mpc
;
5217 stats
->tx_errors
= adapter
->stats
.ecol
+
5218 adapter
->stats
.latecol
;
5219 stats
->tx_aborted_errors
= adapter
->stats
.ecol
;
5220 stats
->tx_window_errors
= adapter
->stats
.latecol
;
5221 stats
->tx_carrier_errors
= adapter
->stats
.tncrs
;
5223 /* Tx Dropped needs to be maintained elsewhere */
5225 spin_unlock(&adapter
->stats64_lock
);
5230 * e1000_change_mtu - Change the Maximum Transfer Unit
5231 * @netdev: network interface device structure
5232 * @new_mtu: new value for maximum frame size
5234 * Returns 0 on success, negative on failure
5236 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
5238 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5239 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
5241 /* Jumbo frame support */
5242 if (max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
5243 if (!(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
5244 e_err("Jumbo Frames not supported.\n");
5249 * IP payload checksum (enabled with jumbos/packet-split when
5250 * Rx checksum is enabled) and generation of RSS hash is
5251 * mutually exclusive in the hardware.
5253 if ((netdev
->features
& NETIF_F_RXCSUM
) &&
5254 (netdev
->features
& NETIF_F_RXHASH
)) {
5255 e_err("Jumbo frames cannot be enabled when both receive checksum offload and receive hashing are enabled. Disable one of the receive offload features before enabling jumbos.\n");
5260 /* Supported frame sizes */
5261 if ((new_mtu
< ETH_ZLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
) ||
5262 (max_frame
> adapter
->max_hw_frame_size
)) {
5263 e_err("Unsupported MTU setting\n");
5267 /* Jumbo frame workaround on 82579 requires CRC be stripped */
5268 if ((adapter
->hw
.mac
.type
== e1000_pch2lan
) &&
5269 !(adapter
->flags2
& FLAG2_CRC_STRIPPING
) &&
5270 (new_mtu
> ETH_DATA_LEN
)) {
5271 e_err("Jumbo Frames not supported on 82579 when CRC stripping is disabled.\n");
5275 /* 82573 Errata 17 */
5276 if (((adapter
->hw
.mac
.type
== e1000_82573
) ||
5277 (adapter
->hw
.mac
.type
== e1000_82574
)) &&
5278 (max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
)) {
5279 adapter
->flags2
|= FLAG2_DISABLE_ASPM_L1
;
5280 e1000e_disable_aspm(adapter
->pdev
, PCIE_LINK_STATE_L1
);
5283 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
5284 usleep_range(1000, 2000);
5285 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
5286 adapter
->max_frame_size
= max_frame
;
5287 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
5288 netdev
->mtu
= new_mtu
;
5289 if (netif_running(netdev
))
5290 e1000e_down(adapter
);
5293 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
5294 * means we reserve 2 more, this pushes us to allocate from the next
5296 * i.e. RXBUFFER_2048 --> size-4096 slab
5297 * However with the new *_jumbo_rx* routines, jumbo receives will use
5301 if (max_frame
<= 2048)
5302 adapter
->rx_buffer_len
= 2048;
5304 adapter
->rx_buffer_len
= 4096;
5306 /* adjust allocation if LPE protects us, and we aren't using SBP */
5307 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
5308 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
5309 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
5312 if (netif_running(netdev
))
5315 e1000e_reset(adapter
);
5317 clear_bit(__E1000_RESETTING
, &adapter
->state
);
5322 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
5325 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5326 struct mii_ioctl_data
*data
= if_mii(ifr
);
5328 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
5333 data
->phy_id
= adapter
->hw
.phy
.addr
;
5336 e1000_phy_read_status(adapter
);
5338 switch (data
->reg_num
& 0x1F) {
5340 data
->val_out
= adapter
->phy_regs
.bmcr
;
5343 data
->val_out
= adapter
->phy_regs
.bmsr
;
5346 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
5349 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
5352 data
->val_out
= adapter
->phy_regs
.advertise
;
5355 data
->val_out
= adapter
->phy_regs
.lpa
;
5358 data
->val_out
= adapter
->phy_regs
.expansion
;
5361 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
5364 data
->val_out
= adapter
->phy_regs
.stat1000
;
5367 data
->val_out
= adapter
->phy_regs
.estatus
;
5380 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
5386 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
5392 static int e1000_init_phy_wakeup(struct e1000_adapter
*adapter
, u32 wufc
)
5394 struct e1000_hw
*hw
= &adapter
->hw
;
5396 u16 phy_reg
, wuc_enable
;
5399 /* copy MAC RARs to PHY RARs */
5400 e1000_copy_rx_addrs_to_phy_ich8lan(hw
);
5402 retval
= hw
->phy
.ops
.acquire(hw
);
5404 e_err("Could not acquire PHY\n");
5408 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */
5409 retval
= e1000_enable_phy_wakeup_reg_access_bm(hw
, &wuc_enable
);
5413 /* copy MAC MTA to PHY MTA - only needed for pchlan */
5414 for (i
= 0; i
< adapter
->hw
.mac
.mta_reg_count
; i
++) {
5415 mac_reg
= E1000_READ_REG_ARRAY(hw
, E1000_MTA
, i
);
5416 hw
->phy
.ops
.write_reg_page(hw
, BM_MTA(i
),
5417 (u16
)(mac_reg
& 0xFFFF));
5418 hw
->phy
.ops
.write_reg_page(hw
, BM_MTA(i
) + 1,
5419 (u16
)((mac_reg
>> 16) & 0xFFFF));
5422 /* configure PHY Rx Control register */
5423 hw
->phy
.ops
.read_reg_page(&adapter
->hw
, BM_RCTL
, &phy_reg
);
5424 mac_reg
= er32(RCTL
);
5425 if (mac_reg
& E1000_RCTL_UPE
)
5426 phy_reg
|= BM_RCTL_UPE
;
5427 if (mac_reg
& E1000_RCTL_MPE
)
5428 phy_reg
|= BM_RCTL_MPE
;
5429 phy_reg
&= ~(BM_RCTL_MO_MASK
);
5430 if (mac_reg
& E1000_RCTL_MO_3
)
5431 phy_reg
|= (((mac_reg
& E1000_RCTL_MO_3
) >> E1000_RCTL_MO_SHIFT
)
5432 << BM_RCTL_MO_SHIFT
);
5433 if (mac_reg
& E1000_RCTL_BAM
)
5434 phy_reg
|= BM_RCTL_BAM
;
5435 if (mac_reg
& E1000_RCTL_PMCF
)
5436 phy_reg
|= BM_RCTL_PMCF
;
5437 mac_reg
= er32(CTRL
);
5438 if (mac_reg
& E1000_CTRL_RFCE
)
5439 phy_reg
|= BM_RCTL_RFCE
;
5440 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_RCTL
, phy_reg
);
5442 /* enable PHY wakeup in MAC register */
5444 ew32(WUC
, E1000_WUC_PHY_WAKE
| E1000_WUC_PME_EN
);
5446 /* configure and enable PHY wakeup in PHY registers */
5447 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_WUFC
, wufc
);
5448 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_WUC
, E1000_WUC_PME_EN
);
5450 /* activate PHY wakeup */
5451 wuc_enable
|= BM_WUC_ENABLE_BIT
| BM_WUC_HOST_WU_BIT
;
5452 retval
= e1000_disable_phy_wakeup_reg_access_bm(hw
, &wuc_enable
);
5454 e_err("Could not set PHY Host Wakeup bit\n");
5456 hw
->phy
.ops
.release(hw
);
5461 static int __e1000_shutdown(struct pci_dev
*pdev
, bool *enable_wake
,
5464 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5465 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5466 struct e1000_hw
*hw
= &adapter
->hw
;
5467 u32 ctrl
, ctrl_ext
, rctl
, status
;
5468 /* Runtime suspend should only enable wakeup for link changes */
5469 u32 wufc
= runtime
? E1000_WUFC_LNKC
: adapter
->wol
;
5472 netif_device_detach(netdev
);
5474 if (netif_running(netdev
)) {
5475 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
5476 e1000e_down(adapter
);
5477 e1000_free_irq(adapter
);
5479 e1000e_reset_interrupt_capability(adapter
);
5481 retval
= pci_save_state(pdev
);
5485 status
= er32(STATUS
);
5486 if (status
& E1000_STATUS_LU
)
5487 wufc
&= ~E1000_WUFC_LNKC
;
5490 e1000_setup_rctl(adapter
);
5491 e1000e_set_rx_mode(netdev
);
5493 /* turn on all-multi mode if wake on multicast is enabled */
5494 if (wufc
& E1000_WUFC_MC
) {
5496 rctl
|= E1000_RCTL_MPE
;
5501 /* advertise wake from D3Cold */
5502 #define E1000_CTRL_ADVD3WUC 0x00100000
5503 /* phy power management enable */
5504 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5505 ctrl
|= E1000_CTRL_ADVD3WUC
;
5506 if (!(adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
))
5507 ctrl
|= E1000_CTRL_EN_PHY_PWR_MGMT
;
5510 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
5511 adapter
->hw
.phy
.media_type
==
5512 e1000_media_type_internal_serdes
) {
5513 /* keep the laser running in D3 */
5514 ctrl_ext
= er32(CTRL_EXT
);
5515 ctrl_ext
|= E1000_CTRL_EXT_SDP3_DATA
;
5516 ew32(CTRL_EXT
, ctrl_ext
);
5519 if (adapter
->flags
& FLAG_IS_ICH
)
5520 e1000_suspend_workarounds_ich8lan(&adapter
->hw
);
5522 /* Allow time for pending master requests to run */
5523 e1000e_disable_pcie_master(&adapter
->hw
);
5525 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
5526 /* enable wakeup by the PHY */
5527 retval
= e1000_init_phy_wakeup(adapter
, wufc
);
5531 /* enable wakeup by the MAC */
5533 ew32(WUC
, E1000_WUC_PME_EN
);
5540 *enable_wake
= !!wufc
;
5542 /* make sure adapter isn't asleep if manageability is enabled */
5543 if ((adapter
->flags
& FLAG_MNG_PT_ENABLED
) ||
5544 (hw
->mac
.ops
.check_mng_mode(hw
)))
5545 *enable_wake
= true;
5547 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
)
5548 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
5551 * Release control of h/w to f/w. If f/w is AMT enabled, this
5552 * would have already happened in close and is redundant.
5554 e1000e_release_hw_control(adapter
);
5556 pci_disable_device(pdev
);
5561 static void e1000_power_off(struct pci_dev
*pdev
, bool sleep
, bool wake
)
5563 if (sleep
&& wake
) {
5564 pci_prepare_to_sleep(pdev
);
5568 pci_wake_from_d3(pdev
, wake
);
5569 pci_set_power_state(pdev
, PCI_D3hot
);
5572 static void e1000_complete_shutdown(struct pci_dev
*pdev
, bool sleep
,
5575 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5576 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5579 * The pci-e switch on some quad port adapters will report a
5580 * correctable error when the MAC transitions from D0 to D3. To
5581 * prevent this we need to mask off the correctable errors on the
5582 * downstream port of the pci-e switch.
5584 if (adapter
->flags
& FLAG_IS_QUAD_PORT
) {
5585 struct pci_dev
*us_dev
= pdev
->bus
->self
;
5586 int pos
= pci_pcie_cap(us_dev
);
5589 pci_read_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, &devctl
);
5590 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
,
5591 (devctl
& ~PCI_EXP_DEVCTL_CERE
));
5593 e1000_power_off(pdev
, sleep
, wake
);
5595 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, devctl
);
5597 e1000_power_off(pdev
, sleep
, wake
);
5601 #ifdef CONFIG_PCIEASPM
5602 static void __e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5604 pci_disable_link_state_locked(pdev
, state
);
5607 static void __e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5613 * Both device and parent should have the same ASPM setting.
5614 * Disable ASPM in downstream component first and then upstream.
5616 pos
= pci_pcie_cap(pdev
);
5617 pci_read_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, ®16
);
5619 pci_write_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, reg16
);
5621 if (!pdev
->bus
->self
)
5624 pos
= pci_pcie_cap(pdev
->bus
->self
);
5625 pci_read_config_word(pdev
->bus
->self
, pos
+ PCI_EXP_LNKCTL
, ®16
);
5627 pci_write_config_word(pdev
->bus
->self
, pos
+ PCI_EXP_LNKCTL
, reg16
);
5630 static void e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5632 dev_info(&pdev
->dev
, "Disabling ASPM %s %s\n",
5633 (state
& PCIE_LINK_STATE_L0S
) ? "L0s" : "",
5634 (state
& PCIE_LINK_STATE_L1
) ? "L1" : "");
5636 __e1000e_disable_aspm(pdev
, state
);
5640 static bool e1000e_pm_ready(struct e1000_adapter
*adapter
)
5642 return !!adapter
->tx_ring
->buffer_info
;
5645 static int __e1000_resume(struct pci_dev
*pdev
)
5647 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5648 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5649 struct e1000_hw
*hw
= &adapter
->hw
;
5650 u16 aspm_disable_flag
= 0;
5653 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
5654 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
5655 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5656 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
5657 if (aspm_disable_flag
)
5658 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
5660 pci_set_power_state(pdev
, PCI_D0
);
5661 pci_restore_state(pdev
);
5662 pci_save_state(pdev
);
5664 e1000e_set_interrupt_capability(adapter
);
5665 if (netif_running(netdev
)) {
5666 err
= e1000_request_irq(adapter
);
5671 if (hw
->mac
.type
== e1000_pch2lan
)
5672 e1000_resume_workarounds_pchlan(&adapter
->hw
);
5674 e1000e_power_up_phy(adapter
);
5676 /* report the system wakeup cause from S3/S4 */
5677 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
5680 e1e_rphy(&adapter
->hw
, BM_WUS
, &phy_data
);
5682 e_info("PHY Wakeup cause - %s\n",
5683 phy_data
& E1000_WUS_EX
? "Unicast Packet" :
5684 phy_data
& E1000_WUS_MC
? "Multicast Packet" :
5685 phy_data
& E1000_WUS_BC
? "Broadcast Packet" :
5686 phy_data
& E1000_WUS_MAG
? "Magic Packet" :
5687 phy_data
& E1000_WUS_LNKC
?
5688 "Link Status Change" : "other");
5690 e1e_wphy(&adapter
->hw
, BM_WUS
, ~0);
5692 u32 wus
= er32(WUS
);
5694 e_info("MAC Wakeup cause - %s\n",
5695 wus
& E1000_WUS_EX
? "Unicast Packet" :
5696 wus
& E1000_WUS_MC
? "Multicast Packet" :
5697 wus
& E1000_WUS_BC
? "Broadcast Packet" :
5698 wus
& E1000_WUS_MAG
? "Magic Packet" :
5699 wus
& E1000_WUS_LNKC
? "Link Status Change" :
5705 e1000e_reset(adapter
);
5707 e1000_init_manageability_pt(adapter
);
5709 if (netif_running(netdev
))
5712 netif_device_attach(netdev
);
5715 * If the controller has AMT, do not set DRV_LOAD until the interface
5716 * is up. For all other cases, let the f/w know that the h/w is now
5717 * under the control of the driver.
5719 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5720 e1000e_get_hw_control(adapter
);
5725 #ifdef CONFIG_PM_SLEEP
5726 static int e1000_suspend(struct device
*dev
)
5728 struct pci_dev
*pdev
= to_pci_dev(dev
);
5732 retval
= __e1000_shutdown(pdev
, &wake
, false);
5734 e1000_complete_shutdown(pdev
, true, wake
);
5739 static int e1000_resume(struct device
*dev
)
5741 struct pci_dev
*pdev
= to_pci_dev(dev
);
5742 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5743 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5745 if (e1000e_pm_ready(adapter
))
5746 adapter
->idle_check
= true;
5748 return __e1000_resume(pdev
);
5750 #endif /* CONFIG_PM_SLEEP */
5752 #ifdef CONFIG_PM_RUNTIME
5753 static int e1000_runtime_suspend(struct device
*dev
)
5755 struct pci_dev
*pdev
= to_pci_dev(dev
);
5756 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5757 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5759 if (e1000e_pm_ready(adapter
)) {
5762 __e1000_shutdown(pdev
, &wake
, true);
5768 static int e1000_idle(struct device
*dev
)
5770 struct pci_dev
*pdev
= to_pci_dev(dev
);
5771 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5772 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5774 if (!e1000e_pm_ready(adapter
))
5777 if (adapter
->idle_check
) {
5778 adapter
->idle_check
= false;
5779 if (!e1000e_has_link(adapter
))
5780 pm_schedule_suspend(dev
, MSEC_PER_SEC
);
5786 static int e1000_runtime_resume(struct device
*dev
)
5788 struct pci_dev
*pdev
= to_pci_dev(dev
);
5789 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5790 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5792 if (!e1000e_pm_ready(adapter
))
5795 adapter
->idle_check
= !dev
->power
.runtime_auto
;
5796 return __e1000_resume(pdev
);
5798 #endif /* CONFIG_PM_RUNTIME */
5799 #endif /* CONFIG_PM */
5801 static void e1000_shutdown(struct pci_dev
*pdev
)
5805 __e1000_shutdown(pdev
, &wake
, false);
5807 if (system_state
== SYSTEM_POWER_OFF
)
5808 e1000_complete_shutdown(pdev
, false, wake
);
5811 #ifdef CONFIG_NET_POLL_CONTROLLER
5813 static irqreturn_t
e1000_intr_msix(int irq
, void *data
)
5815 struct net_device
*netdev
= data
;
5816 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5818 if (adapter
->msix_entries
) {
5819 int vector
, msix_irq
;
5822 msix_irq
= adapter
->msix_entries
[vector
].vector
;
5823 disable_irq(msix_irq
);
5824 e1000_intr_msix_rx(msix_irq
, netdev
);
5825 enable_irq(msix_irq
);
5828 msix_irq
= adapter
->msix_entries
[vector
].vector
;
5829 disable_irq(msix_irq
);
5830 e1000_intr_msix_tx(msix_irq
, netdev
);
5831 enable_irq(msix_irq
);
5834 msix_irq
= adapter
->msix_entries
[vector
].vector
;
5835 disable_irq(msix_irq
);
5836 e1000_msix_other(msix_irq
, netdev
);
5837 enable_irq(msix_irq
);
5844 * Polling 'interrupt' - used by things like netconsole to send skbs
5845 * without having to re-enable interrupts. It's not called while
5846 * the interrupt routine is executing.
5848 static void e1000_netpoll(struct net_device
*netdev
)
5850 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5852 switch (adapter
->int_mode
) {
5853 case E1000E_INT_MODE_MSIX
:
5854 e1000_intr_msix(adapter
->pdev
->irq
, netdev
);
5856 case E1000E_INT_MODE_MSI
:
5857 disable_irq(adapter
->pdev
->irq
);
5858 e1000_intr_msi(adapter
->pdev
->irq
, netdev
);
5859 enable_irq(adapter
->pdev
->irq
);
5861 default: /* E1000E_INT_MODE_LEGACY */
5862 disable_irq(adapter
->pdev
->irq
);
5863 e1000_intr(adapter
->pdev
->irq
, netdev
);
5864 enable_irq(adapter
->pdev
->irq
);
5871 * e1000_io_error_detected - called when PCI error is detected
5872 * @pdev: Pointer to PCI device
5873 * @state: The current pci connection state
5875 * This function is called after a PCI bus error affecting
5876 * this device has been detected.
5878 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
5879 pci_channel_state_t state
)
5881 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5882 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5884 netif_device_detach(netdev
);
5886 if (state
== pci_channel_io_perm_failure
)
5887 return PCI_ERS_RESULT_DISCONNECT
;
5889 if (netif_running(netdev
))
5890 e1000e_down(adapter
);
5891 pci_disable_device(pdev
);
5893 /* Request a slot slot reset. */
5894 return PCI_ERS_RESULT_NEED_RESET
;
5898 * e1000_io_slot_reset - called after the pci bus has been reset.
5899 * @pdev: Pointer to PCI device
5901 * Restart the card from scratch, as if from a cold-boot. Implementation
5902 * resembles the first-half of the e1000_resume routine.
5904 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
5906 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5907 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5908 struct e1000_hw
*hw
= &adapter
->hw
;
5909 u16 aspm_disable_flag
= 0;
5911 pci_ers_result_t result
;
5913 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
5914 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
5915 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5916 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
5917 if (aspm_disable_flag
)
5918 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
5920 err
= pci_enable_device_mem(pdev
);
5923 "Cannot re-enable PCI device after reset.\n");
5924 result
= PCI_ERS_RESULT_DISCONNECT
;
5926 pci_set_master(pdev
);
5927 pdev
->state_saved
= true;
5928 pci_restore_state(pdev
);
5930 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5931 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5933 e1000e_reset(adapter
);
5935 result
= PCI_ERS_RESULT_RECOVERED
;
5938 pci_cleanup_aer_uncorrect_error_status(pdev
);
5944 * e1000_io_resume - called when traffic can start flowing again.
5945 * @pdev: Pointer to PCI device
5947 * This callback is called when the error recovery driver tells us that
5948 * its OK to resume normal operation. Implementation resembles the
5949 * second-half of the e1000_resume routine.
5951 static void e1000_io_resume(struct pci_dev
*pdev
)
5953 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5954 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5956 e1000_init_manageability_pt(adapter
);
5958 if (netif_running(netdev
)) {
5959 if (e1000e_up(adapter
)) {
5961 "can't bring device back up after reset\n");
5966 netif_device_attach(netdev
);
5969 * If the controller has AMT, do not set DRV_LOAD until the interface
5970 * is up. For all other cases, let the f/w know that the h/w is now
5971 * under the control of the driver.
5973 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5974 e1000e_get_hw_control(adapter
);
5978 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
5980 struct e1000_hw
*hw
= &adapter
->hw
;
5981 struct net_device
*netdev
= adapter
->netdev
;
5983 u8 pba_str
[E1000_PBANUM_LENGTH
];
5985 /* print bus type/speed/width info */
5986 e_info("(PCI Express:2.5GT/s:%s) %pM\n",
5988 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
5992 e_info("Intel(R) PRO/%s Network Connection\n",
5993 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
5994 ret_val
= e1000_read_pba_string_generic(hw
, pba_str
,
5995 E1000_PBANUM_LENGTH
);
5997 strlcpy((char *)pba_str
, "Unknown", sizeof(pba_str
));
5998 e_info("MAC: %d, PHY: %d, PBA No: %s\n",
5999 hw
->mac
.type
, hw
->phy
.type
, pba_str
);
6002 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
6004 struct e1000_hw
*hw
= &adapter
->hw
;
6008 if (hw
->mac
.type
!= e1000_82573
)
6011 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
6013 if (!ret_val
&& (!(buf
& (1 << 0)))) {
6014 /* Deep Smart Power Down (DSPD) */
6015 dev_warn(&adapter
->pdev
->dev
,
6016 "Warning: detected DSPD enabled in EEPROM\n");
6020 static int e1000_set_features(struct net_device
*netdev
,
6021 netdev_features_t features
)
6023 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6024 netdev_features_t changed
= features
^ netdev
->features
;
6026 if (changed
& (NETIF_F_TSO
| NETIF_F_TSO6
))
6027 adapter
->flags
|= FLAG_TSO_FORCE
;
6029 if (!(changed
& (NETIF_F_HW_VLAN_RX
| NETIF_F_HW_VLAN_TX
|
6030 NETIF_F_RXCSUM
| NETIF_F_RXHASH
| NETIF_F_RXFCS
|
6035 * IP payload checksum (enabled with jumbos/packet-split when Rx
6036 * checksum is enabled) and generation of RSS hash is mutually
6037 * exclusive in the hardware.
6039 if (adapter
->rx_ps_pages
&&
6040 (features
& NETIF_F_RXCSUM
) && (features
& NETIF_F_RXHASH
)) {
6041 e_err("Enabling both receive checksum offload and receive hashing is not possible with jumbo frames. Disable jumbos or enable only one of the receive offload features.\n");
6045 if (changed
& NETIF_F_RXFCS
) {
6046 if (features
& NETIF_F_RXFCS
) {
6047 adapter
->flags2
&= ~FLAG2_CRC_STRIPPING
;
6049 /* We need to take it back to defaults, which might mean
6050 * stripping is still disabled at the adapter level.
6052 if (adapter
->flags2
& FLAG2_DFLT_CRC_STRIPPING
)
6053 adapter
->flags2
|= FLAG2_CRC_STRIPPING
;
6055 adapter
->flags2
&= ~FLAG2_CRC_STRIPPING
;
6059 netdev
->features
= features
;
6061 if (netif_running(netdev
))
6062 e1000e_reinit_locked(adapter
);
6064 e1000e_reset(adapter
);
6069 static const struct net_device_ops e1000e_netdev_ops
= {
6070 .ndo_open
= e1000_open
,
6071 .ndo_stop
= e1000_close
,
6072 .ndo_start_xmit
= e1000_xmit_frame
,
6073 .ndo_get_stats64
= e1000e_get_stats64
,
6074 .ndo_set_rx_mode
= e1000e_set_rx_mode
,
6075 .ndo_set_mac_address
= e1000_set_mac
,
6076 .ndo_change_mtu
= e1000_change_mtu
,
6077 .ndo_do_ioctl
= e1000_ioctl
,
6078 .ndo_tx_timeout
= e1000_tx_timeout
,
6079 .ndo_validate_addr
= eth_validate_addr
,
6081 .ndo_vlan_rx_add_vid
= e1000_vlan_rx_add_vid
,
6082 .ndo_vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
,
6083 #ifdef CONFIG_NET_POLL_CONTROLLER
6084 .ndo_poll_controller
= e1000_netpoll
,
6086 .ndo_set_features
= e1000_set_features
,
6090 * e1000_probe - Device Initialization Routine
6091 * @pdev: PCI device information struct
6092 * @ent: entry in e1000_pci_tbl
6094 * Returns 0 on success, negative on failure
6096 * e1000_probe initializes an adapter identified by a pci_dev structure.
6097 * The OS initialization, configuring of the adapter private structure,
6098 * and a hardware reset occur.
6100 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
6101 const struct pci_device_id
*ent
)
6103 struct net_device
*netdev
;
6104 struct e1000_adapter
*adapter
;
6105 struct e1000_hw
*hw
;
6106 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
6107 resource_size_t mmio_start
, mmio_len
;
6108 resource_size_t flash_start
, flash_len
;
6109 static int cards_found
;
6110 u16 aspm_disable_flag
= 0;
6111 int i
, err
, pci_using_dac
;
6112 u16 eeprom_data
= 0;
6113 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
6115 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
6116 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
6117 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L1
)
6118 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
6119 if (aspm_disable_flag
)
6120 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
6122 err
= pci_enable_device_mem(pdev
);
6127 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(64));
6129 err
= dma_set_coherent_mask(&pdev
->dev
, DMA_BIT_MASK(64));
6133 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(32));
6135 err
= dma_set_coherent_mask(&pdev
->dev
,
6138 dev_err(&pdev
->dev
, "No usable DMA configuration, aborting\n");
6144 err
= pci_request_selected_regions_exclusive(pdev
,
6145 pci_select_bars(pdev
, IORESOURCE_MEM
),
6146 e1000e_driver_name
);
6150 /* AER (Advanced Error Reporting) hooks */
6151 pci_enable_pcie_error_reporting(pdev
);
6153 pci_set_master(pdev
);
6154 /* PCI config space info */
6155 err
= pci_save_state(pdev
);
6157 goto err_alloc_etherdev
;
6160 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
6162 goto err_alloc_etherdev
;
6164 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
6166 netdev
->irq
= pdev
->irq
;
6168 pci_set_drvdata(pdev
, netdev
);
6169 adapter
= netdev_priv(netdev
);
6171 adapter
->netdev
= netdev
;
6172 adapter
->pdev
= pdev
;
6174 adapter
->pba
= ei
->pba
;
6175 adapter
->flags
= ei
->flags
;
6176 adapter
->flags2
= ei
->flags2
;
6177 adapter
->hw
.adapter
= adapter
;
6178 adapter
->hw
.mac
.type
= ei
->mac
;
6179 adapter
->max_hw_frame_size
= ei
->max_hw_frame_size
;
6180 adapter
->msg_enable
= netif_msg_init(debug
, DEFAULT_MSG_ENABLE
);
6182 mmio_start
= pci_resource_start(pdev
, 0);
6183 mmio_len
= pci_resource_len(pdev
, 0);
6186 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
6187 if (!adapter
->hw
.hw_addr
)
6190 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
6191 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
6192 flash_start
= pci_resource_start(pdev
, 1);
6193 flash_len
= pci_resource_len(pdev
, 1);
6194 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
6195 if (!adapter
->hw
.flash_address
)
6199 /* construct the net_device struct */
6200 netdev
->netdev_ops
= &e1000e_netdev_ops
;
6201 e1000e_set_ethtool_ops(netdev
);
6202 netdev
->watchdog_timeo
= 5 * HZ
;
6203 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
6204 strlcpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
));
6206 netdev
->mem_start
= mmio_start
;
6207 netdev
->mem_end
= mmio_start
+ mmio_len
;
6209 adapter
->bd_number
= cards_found
++;
6211 e1000e_check_options(adapter
);
6213 /* setup adapter struct */
6214 err
= e1000_sw_init(adapter
);
6218 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
6219 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
6220 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
6222 err
= ei
->get_variants(adapter
);
6226 if ((adapter
->flags
& FLAG_IS_ICH
) &&
6227 (adapter
->flags
& FLAG_READ_ONLY_NVM
))
6228 e1000e_write_protect_nvm_ich8lan(&adapter
->hw
);
6230 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
6232 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
6234 /* Copper options */
6235 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
6236 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
6237 adapter
->hw
.phy
.disable_polarity_correction
= 0;
6238 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
6241 if (hw
->phy
.ops
.check_reset_block(hw
))
6242 e_info("PHY reset is blocked due to SOL/IDER session.\n");
6244 /* Set initial default active device features */
6245 netdev
->features
= (NETIF_F_SG
|
6246 NETIF_F_HW_VLAN_RX
|
6247 NETIF_F_HW_VLAN_TX
|
6254 /* Set user-changeable features (subset of all device features) */
6255 netdev
->hw_features
= netdev
->features
;
6256 netdev
->hw_features
|= NETIF_F_RXFCS
;
6257 netdev
->priv_flags
|= IFF_SUPP_NOFCS
;
6258 netdev
->hw_features
|= NETIF_F_RXALL
;
6260 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
6261 netdev
->features
|= NETIF_F_HW_VLAN_FILTER
;
6263 netdev
->vlan_features
|= (NETIF_F_SG
|
6268 netdev
->priv_flags
|= IFF_UNICAST_FLT
;
6270 if (pci_using_dac
) {
6271 netdev
->features
|= NETIF_F_HIGHDMA
;
6272 netdev
->vlan_features
|= NETIF_F_HIGHDMA
;
6275 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
6276 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
6279 * before reading the NVM, reset the controller to
6280 * put the device in a known good starting state
6282 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
6285 * systems with ASPM and others may see the checksum fail on the first
6286 * attempt. Let's give it a few tries
6289 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
6292 e_err("The NVM Checksum Is Not Valid\n");
6298 e1000_eeprom_checks(adapter
);
6300 /* copy the MAC address */
6301 if (e1000e_read_mac_addr(&adapter
->hw
))
6302 e_err("NVM Read Error while reading MAC address\n");
6304 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
6305 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
6307 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
6308 e_err("Invalid MAC Address: %pM\n", netdev
->perm_addr
);
6313 init_timer(&adapter
->watchdog_timer
);
6314 adapter
->watchdog_timer
.function
= e1000_watchdog
;
6315 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
6317 init_timer(&adapter
->phy_info_timer
);
6318 adapter
->phy_info_timer
.function
= e1000_update_phy_info
;
6319 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
6321 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
6322 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
6323 INIT_WORK(&adapter
->downshift_task
, e1000e_downshift_workaround
);
6324 INIT_WORK(&adapter
->update_phy_task
, e1000e_update_phy_task
);
6325 INIT_WORK(&adapter
->print_hang_task
, e1000_print_hw_hang
);
6327 /* Initialize link parameters. User can change them with ethtool */
6328 adapter
->hw
.mac
.autoneg
= 1;
6329 adapter
->fc_autoneg
= true;
6330 adapter
->hw
.fc
.requested_mode
= e1000_fc_default
;
6331 adapter
->hw
.fc
.current_mode
= e1000_fc_default
;
6332 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
6334 /* ring size defaults */
6335 adapter
->rx_ring
->count
= 256;
6336 adapter
->tx_ring
->count
= 256;
6339 * Initial Wake on LAN setting - If APM wake is enabled in
6340 * the EEPROM, enable the ACPI Magic Packet filter
6342 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
6343 /* APME bit in EEPROM is mapped to WUC.APME */
6344 eeprom_data
= er32(WUC
);
6345 eeprom_apme_mask
= E1000_WUC_APME
;
6346 if ((hw
->mac
.type
> e1000_ich10lan
) &&
6347 (eeprom_data
& E1000_WUC_PHY_WAKE
))
6348 adapter
->flags2
|= FLAG2_HAS_PHY_WAKEUP
;
6349 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
6350 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
6351 (adapter
->hw
.bus
.func
== 1))
6352 e1000_read_nvm(&adapter
->hw
, NVM_INIT_CONTROL3_PORT_B
,
6355 e1000_read_nvm(&adapter
->hw
, NVM_INIT_CONTROL3_PORT_A
,
6359 /* fetch WoL from EEPROM */
6360 if (eeprom_data
& eeprom_apme_mask
)
6361 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
6364 * now that we have the eeprom settings, apply the special cases
6365 * where the eeprom may be wrong or the board simply won't support
6366 * wake on lan on a particular port
6368 if (!(adapter
->flags
& FLAG_HAS_WOL
))
6369 adapter
->eeprom_wol
= 0;
6371 /* initialize the wol settings based on the eeprom settings */
6372 adapter
->wol
= adapter
->eeprom_wol
;
6373 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
6375 /* save off EEPROM version number */
6376 e1000_read_nvm(&adapter
->hw
, 5, 1, &adapter
->eeprom_vers
);
6378 /* reset the hardware with the new settings */
6379 e1000e_reset(adapter
);
6382 * If the controller has AMT, do not set DRV_LOAD until the interface
6383 * is up. For all other cases, let the f/w know that the h/w is now
6384 * under the control of the driver.
6386 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6387 e1000e_get_hw_control(adapter
);
6389 strlcpy(netdev
->name
, "eth%d", sizeof(netdev
->name
));
6390 err
= register_netdev(netdev
);
6394 /* carrier off reporting is important to ethtool even BEFORE open */
6395 netif_carrier_off(netdev
);
6397 e1000_print_device_info(adapter
);
6399 if (pci_dev_run_wake(pdev
))
6400 pm_runtime_put_noidle(&pdev
->dev
);
6405 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6406 e1000e_release_hw_control(adapter
);
6408 if (!hw
->phy
.ops
.check_reset_block(hw
))
6409 e1000_phy_hw_reset(&adapter
->hw
);
6411 kfree(adapter
->tx_ring
);
6412 kfree(adapter
->rx_ring
);
6414 if (adapter
->hw
.flash_address
)
6415 iounmap(adapter
->hw
.flash_address
);
6416 e1000e_reset_interrupt_capability(adapter
);
6418 iounmap(adapter
->hw
.hw_addr
);
6420 free_netdev(netdev
);
6422 pci_release_selected_regions(pdev
,
6423 pci_select_bars(pdev
, IORESOURCE_MEM
));
6426 pci_disable_device(pdev
);
6431 * e1000_remove - Device Removal Routine
6432 * @pdev: PCI device information struct
6434 * e1000_remove is called by the PCI subsystem to alert the driver
6435 * that it should release a PCI device. The could be caused by a
6436 * Hot-Plug event, or because the driver is going to be removed from
6439 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
6441 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6442 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6443 bool down
= test_bit(__E1000_DOWN
, &adapter
->state
);
6446 * The timers may be rescheduled, so explicitly disable them
6447 * from being rescheduled.
6450 set_bit(__E1000_DOWN
, &adapter
->state
);
6451 del_timer_sync(&adapter
->watchdog_timer
);
6452 del_timer_sync(&adapter
->phy_info_timer
);
6454 cancel_work_sync(&adapter
->reset_task
);
6455 cancel_work_sync(&adapter
->watchdog_task
);
6456 cancel_work_sync(&adapter
->downshift_task
);
6457 cancel_work_sync(&adapter
->update_phy_task
);
6458 cancel_work_sync(&adapter
->print_hang_task
);
6460 if (!(netdev
->flags
& IFF_UP
))
6461 e1000_power_down_phy(adapter
);
6463 /* Don't lie to e1000_close() down the road. */
6465 clear_bit(__E1000_DOWN
, &adapter
->state
);
6466 unregister_netdev(netdev
);
6468 if (pci_dev_run_wake(pdev
))
6469 pm_runtime_get_noresume(&pdev
->dev
);
6472 * Release control of h/w to f/w. If f/w is AMT enabled, this
6473 * would have already happened in close and is redundant.
6475 e1000e_release_hw_control(adapter
);
6477 e1000e_reset_interrupt_capability(adapter
);
6478 kfree(adapter
->tx_ring
);
6479 kfree(adapter
->rx_ring
);
6481 iounmap(adapter
->hw
.hw_addr
);
6482 if (adapter
->hw
.flash_address
)
6483 iounmap(adapter
->hw
.flash_address
);
6484 pci_release_selected_regions(pdev
,
6485 pci_select_bars(pdev
, IORESOURCE_MEM
));
6487 free_netdev(netdev
);
6490 pci_disable_pcie_error_reporting(pdev
);
6492 pci_disable_device(pdev
);
6495 /* PCI Error Recovery (ERS) */
6496 static struct pci_error_handlers e1000_err_handler
= {
6497 .error_detected
= e1000_io_error_detected
,
6498 .slot_reset
= e1000_io_slot_reset
,
6499 .resume
= e1000_io_resume
,
6502 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl
) = {
6503 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
6504 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
6505 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
6506 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
), board_82571
},
6507 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
6508 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
6509 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
6510 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
6511 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
6513 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
6514 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
6515 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
6516 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
6518 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
6519 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
6520 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
6522 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574L
), board_82574
},
6523 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574LA
), board_82574
},
6524 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82583V
), board_82583
},
6526 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
6527 board_80003es2lan
},
6528 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
6529 board_80003es2lan
},
6530 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
6531 board_80003es2lan
},
6532 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
6533 board_80003es2lan
},
6535 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
6536 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
6537 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
6538 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
6539 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
6540 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
6541 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
6542 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_82567V_3
), board_ich8lan
},
6544 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
6545 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
6546 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
6547 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
6548 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
6549 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_BM
), board_ich9lan
},
6550 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
6551 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
6552 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
6554 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
6555 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
6556 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
6558 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LM
), board_ich10lan
},
6559 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LF
), board_ich10lan
},
6560 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_V
), board_ich10lan
},
6562 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LM
), board_pchlan
},
6563 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LC
), board_pchlan
},
6564 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DM
), board_pchlan
},
6565 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DC
), board_pchlan
},
6567 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_LM
), board_pch2lan
},
6568 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_V
), board_pch2lan
},
6570 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */
6572 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
6575 static const struct dev_pm_ops e1000_pm_ops
= {
6576 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend
, e1000_resume
)
6577 SET_RUNTIME_PM_OPS(e1000_runtime_suspend
,
6578 e1000_runtime_resume
, e1000_idle
)
6582 /* PCI Device API Driver */
6583 static struct pci_driver e1000_driver
= {
6584 .name
= e1000e_driver_name
,
6585 .id_table
= e1000_pci_tbl
,
6586 .probe
= e1000_probe
,
6587 .remove
= __devexit_p(e1000_remove
),
6590 .pm
= &e1000_pm_ops
,
6593 .shutdown
= e1000_shutdown
,
6594 .err_handler
= &e1000_err_handler
6598 * e1000_init_module - Driver Registration Routine
6600 * e1000_init_module is the first routine called when the driver is
6601 * loaded. All it does is register with the PCI subsystem.
6603 static int __init
e1000_init_module(void)
6606 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
6607 e1000e_driver_version
);
6608 pr_info("Copyright(c) 1999 - 2012 Intel Corporation.\n");
6609 ret
= pci_register_driver(&e1000_driver
);
6613 module_init(e1000_init_module
);
6616 * e1000_exit_module - Driver Exit Cleanup Routine
6618 * e1000_exit_module is called just before the driver is removed
6621 static void __exit
e1000_exit_module(void)
6623 pci_unregister_driver(&e1000_driver
);
6625 module_exit(e1000_exit_module
);
6628 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
6629 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
6630 MODULE_LICENSE("GPL");
6631 MODULE_VERSION(DRV_VERSION
);