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
)) {
1057 * May be block on write-back, flush and detect again
1058 * flush pending descriptor writebacks to memory
1060 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
1061 /* execute the writes immediately */
1063 adapter
->tx_hang_recheck
= true;
1066 /* Real hang detected */
1067 adapter
->tx_hang_recheck
= false;
1068 netif_stop_queue(netdev
);
1070 e1e_rphy(hw
, PHY_STATUS
, &phy_status
);
1071 e1e_rphy(hw
, PHY_1000T_STATUS
, &phy_1000t_status
);
1072 e1e_rphy(hw
, PHY_EXT_STATUS
, &phy_ext_status
);
1074 pci_read_config_word(adapter
->pdev
, PCI_STATUS
, &pci_status
);
1076 /* detected Hardware unit hang */
1077 e_err("Detected Hardware Unit Hang:\n"
1080 " next_to_use <%x>\n"
1081 " next_to_clean <%x>\n"
1082 "buffer_info[next_to_clean]:\n"
1083 " time_stamp <%lx>\n"
1084 " next_to_watch <%x>\n"
1086 " next_to_watch.status <%x>\n"
1089 "PHY 1000BASE-T Status <%x>\n"
1090 "PHY Extended Status <%x>\n"
1091 "PCI Status <%x>\n",
1092 readl(tx_ring
->head
),
1093 readl(tx_ring
->tail
),
1094 tx_ring
->next_to_use
,
1095 tx_ring
->next_to_clean
,
1096 tx_ring
->buffer_info
[eop
].time_stamp
,
1099 eop_desc
->upper
.fields
.status
,
1108 * e1000_clean_tx_irq - Reclaim resources after transmit completes
1109 * @tx_ring: Tx descriptor ring
1111 * the return value indicates whether actual cleaning was done, there
1112 * is no guarantee that everything was cleaned
1114 static bool e1000_clean_tx_irq(struct e1000_ring
*tx_ring
)
1116 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
1117 struct net_device
*netdev
= adapter
->netdev
;
1118 struct e1000_hw
*hw
= &adapter
->hw
;
1119 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
1120 struct e1000_buffer
*buffer_info
;
1121 unsigned int i
, eop
;
1122 unsigned int count
= 0;
1123 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
1124 unsigned int bytes_compl
= 0, pkts_compl
= 0;
1126 i
= tx_ring
->next_to_clean
;
1127 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1128 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1130 while ((eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
1131 (count
< tx_ring
->count
)) {
1132 bool cleaned
= false;
1133 rmb(); /* read buffer_info after eop_desc */
1134 for (; !cleaned
; count
++) {
1135 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
1136 buffer_info
= &tx_ring
->buffer_info
[i
];
1137 cleaned
= (i
== eop
);
1140 total_tx_packets
+= buffer_info
->segs
;
1141 total_tx_bytes
+= buffer_info
->bytecount
;
1142 if (buffer_info
->skb
) {
1143 bytes_compl
+= buffer_info
->skb
->len
;
1148 e1000_put_txbuf(tx_ring
, buffer_info
);
1149 tx_desc
->upper
.data
= 0;
1152 if (i
== tx_ring
->count
)
1156 if (i
== tx_ring
->next_to_use
)
1158 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1159 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1162 tx_ring
->next_to_clean
= i
;
1164 netdev_completed_queue(netdev
, pkts_compl
, bytes_compl
);
1166 #define TX_WAKE_THRESHOLD 32
1167 if (count
&& netif_carrier_ok(netdev
) &&
1168 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
1169 /* Make sure that anybody stopping the queue after this
1170 * sees the new next_to_clean.
1174 if (netif_queue_stopped(netdev
) &&
1175 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
1176 netif_wake_queue(netdev
);
1177 ++adapter
->restart_queue
;
1181 if (adapter
->detect_tx_hung
) {
1183 * Detect a transmit hang in hardware, this serializes the
1184 * check with the clearing of time_stamp and movement of i
1186 adapter
->detect_tx_hung
= false;
1187 if (tx_ring
->buffer_info
[i
].time_stamp
&&
1188 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
1189 + (adapter
->tx_timeout_factor
* HZ
)) &&
1190 !(er32(STATUS
) & E1000_STATUS_TXOFF
))
1191 schedule_work(&adapter
->print_hang_task
);
1193 adapter
->tx_hang_recheck
= false;
1195 adapter
->total_tx_bytes
+= total_tx_bytes
;
1196 adapter
->total_tx_packets
+= total_tx_packets
;
1197 return count
< tx_ring
->count
;
1201 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
1202 * @rx_ring: Rx descriptor ring
1204 * the return value indicates whether actual cleaning was done, there
1205 * is no guarantee that everything was cleaned
1207 static bool e1000_clean_rx_irq_ps(struct e1000_ring
*rx_ring
, int *work_done
,
1210 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1211 struct e1000_hw
*hw
= &adapter
->hw
;
1212 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
1213 struct net_device
*netdev
= adapter
->netdev
;
1214 struct pci_dev
*pdev
= adapter
->pdev
;
1215 struct e1000_buffer
*buffer_info
, *next_buffer
;
1216 struct e1000_ps_page
*ps_page
;
1217 struct sk_buff
*skb
;
1219 u32 length
, staterr
;
1220 int cleaned_count
= 0;
1221 bool cleaned
= false;
1222 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
1224 i
= rx_ring
->next_to_clean
;
1225 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
1226 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1227 buffer_info
= &rx_ring
->buffer_info
[i
];
1229 while (staterr
& E1000_RXD_STAT_DD
) {
1230 if (*work_done
>= work_to_do
)
1233 skb
= buffer_info
->skb
;
1234 rmb(); /* read descriptor and rx_buffer_info after status DD */
1236 /* in the packet split case this is header only */
1237 prefetch(skb
->data
- NET_IP_ALIGN
);
1240 if (i
== rx_ring
->count
)
1242 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
1245 next_buffer
= &rx_ring
->buffer_info
[i
];
1249 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1250 adapter
->rx_ps_bsize0
, DMA_FROM_DEVICE
);
1251 buffer_info
->dma
= 0;
1253 /* see !EOP comment in other Rx routine */
1254 if (!(staterr
& E1000_RXD_STAT_EOP
))
1255 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
1257 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
1258 e_dbg("Packet Split buffers didn't pick up the full packet\n");
1259 dev_kfree_skb_irq(skb
);
1260 if (staterr
& E1000_RXD_STAT_EOP
)
1261 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1265 if (unlikely((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
1266 !(netdev
->features
& NETIF_F_RXALL
))) {
1267 dev_kfree_skb_irq(skb
);
1271 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
1274 e_dbg("Last part of the packet spanning multiple descriptors\n");
1275 dev_kfree_skb_irq(skb
);
1280 skb_put(skb
, length
);
1284 * this looks ugly, but it seems compiler issues make
1285 * it more efficient than reusing j
1287 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
1290 * page alloc/put takes too long and effects small
1291 * packet throughput, so unsplit small packets and
1292 * save the alloc/put only valid in softirq (napi)
1293 * context to call kmap_*
1295 if (l1
&& (l1
<= copybreak
) &&
1296 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
1299 ps_page
= &buffer_info
->ps_pages
[0];
1302 * there is no documentation about how to call
1303 * kmap_atomic, so we can't hold the mapping
1306 dma_sync_single_for_cpu(&pdev
->dev
,
1310 vaddr
= kmap_atomic(ps_page
->page
);
1311 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
1312 kunmap_atomic(vaddr
);
1313 dma_sync_single_for_device(&pdev
->dev
,
1318 /* remove the CRC */
1319 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
1320 if (!(netdev
->features
& NETIF_F_RXFCS
))
1329 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1330 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
1334 ps_page
= &buffer_info
->ps_pages
[j
];
1335 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1338 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
1339 ps_page
->page
= NULL
;
1341 skb
->data_len
+= length
;
1342 skb
->truesize
+= PAGE_SIZE
;
1345 /* strip the ethernet crc, problem is we're using pages now so
1346 * this whole operation can get a little cpu intensive
1348 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
1349 if (!(netdev
->features
& NETIF_F_RXFCS
))
1350 pskb_trim(skb
, skb
->len
- 4);
1354 total_rx_bytes
+= skb
->len
;
1357 e1000_rx_checksum(adapter
, staterr
,
1358 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
, skb
);
1360 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1362 if (rx_desc
->wb
.upper
.header_status
&
1363 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
1364 adapter
->rx_hdr_split
++;
1366 e1000_receive_skb(adapter
, netdev
, skb
,
1367 staterr
, rx_desc
->wb
.middle
.vlan
);
1370 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
1371 buffer_info
->skb
= NULL
;
1373 /* return some buffers to hardware, one at a time is too slow */
1374 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
1375 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1380 /* use prefetched values */
1382 buffer_info
= next_buffer
;
1384 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1386 rx_ring
->next_to_clean
= i
;
1388 cleaned_count
= e1000_desc_unused(rx_ring
);
1390 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1392 adapter
->total_rx_bytes
+= total_rx_bytes
;
1393 adapter
->total_rx_packets
+= total_rx_packets
;
1398 * e1000_consume_page - helper function
1400 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
1405 skb
->data_len
+= length
;
1406 skb
->truesize
+= PAGE_SIZE
;
1410 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1411 * @adapter: board private structure
1413 * the return value indicates whether actual cleaning was done, there
1414 * is no guarantee that everything was cleaned
1416 static bool e1000_clean_jumbo_rx_irq(struct e1000_ring
*rx_ring
, int *work_done
,
1419 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1420 struct net_device
*netdev
= adapter
->netdev
;
1421 struct pci_dev
*pdev
= adapter
->pdev
;
1422 union e1000_rx_desc_extended
*rx_desc
, *next_rxd
;
1423 struct e1000_buffer
*buffer_info
, *next_buffer
;
1424 u32 length
, staterr
;
1426 int cleaned_count
= 0;
1427 bool cleaned
= false;
1428 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
1430 i
= rx_ring
->next_to_clean
;
1431 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
1432 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1433 buffer_info
= &rx_ring
->buffer_info
[i
];
1435 while (staterr
& E1000_RXD_STAT_DD
) {
1436 struct sk_buff
*skb
;
1438 if (*work_done
>= work_to_do
)
1441 rmb(); /* read descriptor and rx_buffer_info after status DD */
1443 skb
= buffer_info
->skb
;
1444 buffer_info
->skb
= NULL
;
1447 if (i
== rx_ring
->count
)
1449 next_rxd
= E1000_RX_DESC_EXT(*rx_ring
, i
);
1452 next_buffer
= &rx_ring
->buffer_info
[i
];
1456 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
, PAGE_SIZE
,
1458 buffer_info
->dma
= 0;
1460 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
1462 /* errors is only valid for DD + EOP descriptors */
1463 if (unlikely((staterr
& E1000_RXD_STAT_EOP
) &&
1464 ((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
1465 !(netdev
->features
& NETIF_F_RXALL
)))) {
1466 /* recycle both page and skb */
1467 buffer_info
->skb
= skb
;
1468 /* an error means any chain goes out the window too */
1469 if (rx_ring
->rx_skb_top
)
1470 dev_kfree_skb_irq(rx_ring
->rx_skb_top
);
1471 rx_ring
->rx_skb_top
= NULL
;
1475 #define rxtop (rx_ring->rx_skb_top)
1476 if (!(staterr
& E1000_RXD_STAT_EOP
)) {
1477 /* this descriptor is only the beginning (or middle) */
1479 /* this is the beginning of a chain */
1481 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
1484 /* this is the middle of a chain */
1485 skb_fill_page_desc(rxtop
,
1486 skb_shinfo(rxtop
)->nr_frags
,
1487 buffer_info
->page
, 0, length
);
1488 /* re-use the skb, only consumed the page */
1489 buffer_info
->skb
= skb
;
1491 e1000_consume_page(buffer_info
, rxtop
, length
);
1495 /* end of the chain */
1496 skb_fill_page_desc(rxtop
,
1497 skb_shinfo(rxtop
)->nr_frags
,
1498 buffer_info
->page
, 0, length
);
1499 /* re-use the current skb, we only consumed the
1501 buffer_info
->skb
= skb
;
1504 e1000_consume_page(buffer_info
, skb
, length
);
1506 /* no chain, got EOP, this buf is the packet
1507 * copybreak to save the put_page/alloc_page */
1508 if (length
<= copybreak
&&
1509 skb_tailroom(skb
) >= length
) {
1511 vaddr
= kmap_atomic(buffer_info
->page
);
1512 memcpy(skb_tail_pointer(skb
), vaddr
,
1514 kunmap_atomic(vaddr
);
1515 /* re-use the page, so don't erase
1516 * buffer_info->page */
1517 skb_put(skb
, length
);
1519 skb_fill_page_desc(skb
, 0,
1520 buffer_info
->page
, 0,
1522 e1000_consume_page(buffer_info
, skb
,
1528 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1529 e1000_rx_checksum(adapter
, staterr
,
1530 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
, skb
);
1532 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1534 /* probably a little skewed due to removing CRC */
1535 total_rx_bytes
+= skb
->len
;
1538 /* eth type trans needs skb->data to point to something */
1539 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1540 e_err("pskb_may_pull failed.\n");
1541 dev_kfree_skb_irq(skb
);
1545 e1000_receive_skb(adapter
, netdev
, skb
, staterr
,
1546 rx_desc
->wb
.upper
.vlan
);
1549 rx_desc
->wb
.upper
.status_error
&= cpu_to_le32(~0xFF);
1551 /* return some buffers to hardware, one at a time is too slow */
1552 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1553 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1558 /* use prefetched values */
1560 buffer_info
= next_buffer
;
1562 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1564 rx_ring
->next_to_clean
= i
;
1566 cleaned_count
= e1000_desc_unused(rx_ring
);
1568 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1570 adapter
->total_rx_bytes
+= total_rx_bytes
;
1571 adapter
->total_rx_packets
+= total_rx_packets
;
1576 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1577 * @rx_ring: Rx descriptor ring
1579 static void e1000_clean_rx_ring(struct e1000_ring
*rx_ring
)
1581 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1582 struct e1000_buffer
*buffer_info
;
1583 struct e1000_ps_page
*ps_page
;
1584 struct pci_dev
*pdev
= adapter
->pdev
;
1587 /* Free all the Rx ring sk_buffs */
1588 for (i
= 0; i
< rx_ring
->count
; i
++) {
1589 buffer_info
= &rx_ring
->buffer_info
[i
];
1590 if (buffer_info
->dma
) {
1591 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1592 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1593 adapter
->rx_buffer_len
,
1595 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1596 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
,
1599 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1600 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1601 adapter
->rx_ps_bsize0
,
1603 buffer_info
->dma
= 0;
1606 if (buffer_info
->page
) {
1607 put_page(buffer_info
->page
);
1608 buffer_info
->page
= NULL
;
1611 if (buffer_info
->skb
) {
1612 dev_kfree_skb(buffer_info
->skb
);
1613 buffer_info
->skb
= NULL
;
1616 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1617 ps_page
= &buffer_info
->ps_pages
[j
];
1620 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1623 put_page(ps_page
->page
);
1624 ps_page
->page
= NULL
;
1628 /* there also may be some cached data from a chained receive */
1629 if (rx_ring
->rx_skb_top
) {
1630 dev_kfree_skb(rx_ring
->rx_skb_top
);
1631 rx_ring
->rx_skb_top
= NULL
;
1634 /* Zero out the descriptor ring */
1635 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1637 rx_ring
->next_to_clean
= 0;
1638 rx_ring
->next_to_use
= 0;
1639 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1641 writel(0, rx_ring
->head
);
1642 writel(0, rx_ring
->tail
);
1645 static void e1000e_downshift_workaround(struct work_struct
*work
)
1647 struct e1000_adapter
*adapter
= container_of(work
,
1648 struct e1000_adapter
, downshift_task
);
1650 if (test_bit(__E1000_DOWN
, &adapter
->state
))
1653 e1000e_gig_downshift_workaround_ich8lan(&adapter
->hw
);
1657 * e1000_intr_msi - Interrupt Handler
1658 * @irq: interrupt number
1659 * @data: pointer to a network interface device structure
1661 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
1663 struct net_device
*netdev
= data
;
1664 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1665 struct e1000_hw
*hw
= &adapter
->hw
;
1666 u32 icr
= er32(ICR
);
1669 * read ICR disables interrupts using IAM
1672 if (icr
& E1000_ICR_LSC
) {
1673 hw
->mac
.get_link_status
= true;
1675 * ICH8 workaround-- Call gig speed drop workaround on cable
1676 * disconnect (LSC) before accessing any PHY registers
1678 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1679 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1680 schedule_work(&adapter
->downshift_task
);
1683 * 80003ES2LAN workaround-- For packet buffer work-around on
1684 * link down event; disable receives here in the ISR and reset
1685 * adapter in watchdog
1687 if (netif_carrier_ok(netdev
) &&
1688 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1689 /* disable receives */
1690 u32 rctl
= er32(RCTL
);
1691 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1692 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1694 /* guard against interrupt when we're going down */
1695 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1696 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1699 if (napi_schedule_prep(&adapter
->napi
)) {
1700 adapter
->total_tx_bytes
= 0;
1701 adapter
->total_tx_packets
= 0;
1702 adapter
->total_rx_bytes
= 0;
1703 adapter
->total_rx_packets
= 0;
1704 __napi_schedule(&adapter
->napi
);
1711 * e1000_intr - Interrupt Handler
1712 * @irq: interrupt number
1713 * @data: pointer to a network interface device structure
1715 static irqreturn_t
e1000_intr(int irq
, void *data
)
1717 struct net_device
*netdev
= data
;
1718 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1719 struct e1000_hw
*hw
= &adapter
->hw
;
1720 u32 rctl
, icr
= er32(ICR
);
1722 if (!icr
|| test_bit(__E1000_DOWN
, &adapter
->state
))
1723 return IRQ_NONE
; /* Not our interrupt */
1726 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1727 * not set, then the adapter didn't send an interrupt
1729 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1733 * Interrupt Auto-Mask...upon reading ICR,
1734 * interrupts are masked. No need for the
1738 if (icr
& E1000_ICR_LSC
) {
1739 hw
->mac
.get_link_status
= true;
1741 * ICH8 workaround-- Call gig speed drop workaround on cable
1742 * disconnect (LSC) before accessing any PHY registers
1744 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1745 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1746 schedule_work(&adapter
->downshift_task
);
1749 * 80003ES2LAN workaround--
1750 * For packet buffer work-around on link down event;
1751 * disable receives here in the ISR and
1752 * reset adapter in watchdog
1754 if (netif_carrier_ok(netdev
) &&
1755 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1756 /* disable receives */
1758 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1759 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1761 /* guard against interrupt when we're going down */
1762 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1763 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1766 if (napi_schedule_prep(&adapter
->napi
)) {
1767 adapter
->total_tx_bytes
= 0;
1768 adapter
->total_tx_packets
= 0;
1769 adapter
->total_rx_bytes
= 0;
1770 adapter
->total_rx_packets
= 0;
1771 __napi_schedule(&adapter
->napi
);
1777 static irqreturn_t
e1000_msix_other(int irq
, void *data
)
1779 struct net_device
*netdev
= data
;
1780 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1781 struct e1000_hw
*hw
= &adapter
->hw
;
1782 u32 icr
= er32(ICR
);
1784 if (!(icr
& E1000_ICR_INT_ASSERTED
)) {
1785 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1786 ew32(IMS
, E1000_IMS_OTHER
);
1790 if (icr
& adapter
->eiac_mask
)
1791 ew32(ICS
, (icr
& adapter
->eiac_mask
));
1793 if (icr
& E1000_ICR_OTHER
) {
1794 if (!(icr
& E1000_ICR_LSC
))
1795 goto no_link_interrupt
;
1796 hw
->mac
.get_link_status
= true;
1797 /* guard against interrupt when we're going down */
1798 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1799 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1803 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1804 ew32(IMS
, E1000_IMS_LSC
| E1000_IMS_OTHER
);
1810 static irqreturn_t
e1000_intr_msix_tx(int irq
, void *data
)
1812 struct net_device
*netdev
= data
;
1813 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1814 struct e1000_hw
*hw
= &adapter
->hw
;
1815 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1818 adapter
->total_tx_bytes
= 0;
1819 adapter
->total_tx_packets
= 0;
1821 if (!e1000_clean_tx_irq(tx_ring
))
1822 /* Ring was not completely cleaned, so fire another interrupt */
1823 ew32(ICS
, tx_ring
->ims_val
);
1828 static irqreturn_t
e1000_intr_msix_rx(int irq
, void *data
)
1830 struct net_device
*netdev
= data
;
1831 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1832 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1834 /* Write the ITR value calculated at the end of the
1835 * previous interrupt.
1837 if (rx_ring
->set_itr
) {
1838 writel(1000000000 / (rx_ring
->itr_val
* 256),
1839 rx_ring
->itr_register
);
1840 rx_ring
->set_itr
= 0;
1843 if (napi_schedule_prep(&adapter
->napi
)) {
1844 adapter
->total_rx_bytes
= 0;
1845 adapter
->total_rx_packets
= 0;
1846 __napi_schedule(&adapter
->napi
);
1852 * e1000_configure_msix - Configure MSI-X hardware
1854 * e1000_configure_msix sets up the hardware to properly
1855 * generate MSI-X interrupts.
1857 static void e1000_configure_msix(struct e1000_adapter
*adapter
)
1859 struct e1000_hw
*hw
= &adapter
->hw
;
1860 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1861 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1863 u32 ctrl_ext
, ivar
= 0;
1865 adapter
->eiac_mask
= 0;
1867 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1868 if (hw
->mac
.type
== e1000_82574
) {
1869 u32 rfctl
= er32(RFCTL
);
1870 rfctl
|= E1000_RFCTL_ACK_DIS
;
1874 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1875 /* Configure Rx vector */
1876 rx_ring
->ims_val
= E1000_IMS_RXQ0
;
1877 adapter
->eiac_mask
|= rx_ring
->ims_val
;
1878 if (rx_ring
->itr_val
)
1879 writel(1000000000 / (rx_ring
->itr_val
* 256),
1880 rx_ring
->itr_register
);
1882 writel(1, rx_ring
->itr_register
);
1883 ivar
= E1000_IVAR_INT_ALLOC_VALID
| vector
;
1885 /* Configure Tx vector */
1886 tx_ring
->ims_val
= E1000_IMS_TXQ0
;
1888 if (tx_ring
->itr_val
)
1889 writel(1000000000 / (tx_ring
->itr_val
* 256),
1890 tx_ring
->itr_register
);
1892 writel(1, tx_ring
->itr_register
);
1893 adapter
->eiac_mask
|= tx_ring
->ims_val
;
1894 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 8);
1896 /* set vector for Other Causes, e.g. link changes */
1898 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 16);
1899 if (rx_ring
->itr_val
)
1900 writel(1000000000 / (rx_ring
->itr_val
* 256),
1901 hw
->hw_addr
+ E1000_EITR_82574(vector
));
1903 writel(1, hw
->hw_addr
+ E1000_EITR_82574(vector
));
1905 /* Cause Tx interrupts on every write back */
1910 /* enable MSI-X PBA support */
1911 ctrl_ext
= er32(CTRL_EXT
);
1912 ctrl_ext
|= E1000_CTRL_EXT_PBA_CLR
;
1914 /* Auto-Mask Other interrupts upon ICR read */
1915 #define E1000_EIAC_MASK_82574 0x01F00000
1916 ew32(IAM
, ~E1000_EIAC_MASK_82574
| E1000_IMS_OTHER
);
1917 ctrl_ext
|= E1000_CTRL_EXT_EIAME
;
1918 ew32(CTRL_EXT
, ctrl_ext
);
1922 void e1000e_reset_interrupt_capability(struct e1000_adapter
*adapter
)
1924 if (adapter
->msix_entries
) {
1925 pci_disable_msix(adapter
->pdev
);
1926 kfree(adapter
->msix_entries
);
1927 adapter
->msix_entries
= NULL
;
1928 } else if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1929 pci_disable_msi(adapter
->pdev
);
1930 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
1935 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1937 * Attempt to configure interrupts using the best available
1938 * capabilities of the hardware and kernel.
1940 void e1000e_set_interrupt_capability(struct e1000_adapter
*adapter
)
1945 switch (adapter
->int_mode
) {
1946 case E1000E_INT_MODE_MSIX
:
1947 if (adapter
->flags
& FLAG_HAS_MSIX
) {
1948 adapter
->num_vectors
= 3; /* RxQ0, TxQ0 and other */
1949 adapter
->msix_entries
= kcalloc(adapter
->num_vectors
,
1950 sizeof(struct msix_entry
),
1952 if (adapter
->msix_entries
) {
1953 for (i
= 0; i
< adapter
->num_vectors
; i
++)
1954 adapter
->msix_entries
[i
].entry
= i
;
1956 err
= pci_enable_msix(adapter
->pdev
,
1957 adapter
->msix_entries
,
1958 adapter
->num_vectors
);
1962 /* MSI-X failed, so fall through and try MSI */
1963 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n");
1964 e1000e_reset_interrupt_capability(adapter
);
1966 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1968 case E1000E_INT_MODE_MSI
:
1969 if (!pci_enable_msi(adapter
->pdev
)) {
1970 adapter
->flags
|= FLAG_MSI_ENABLED
;
1972 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1973 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n");
1976 case E1000E_INT_MODE_LEGACY
:
1977 /* Don't do anything; this is the system default */
1981 /* store the number of vectors being used */
1982 adapter
->num_vectors
= 1;
1986 * e1000_request_msix - Initialize MSI-X interrupts
1988 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1991 static int e1000_request_msix(struct e1000_adapter
*adapter
)
1993 struct net_device
*netdev
= adapter
->netdev
;
1994 int err
= 0, vector
= 0;
1996 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1997 snprintf(adapter
->rx_ring
->name
,
1998 sizeof(adapter
->rx_ring
->name
) - 1,
1999 "%s-rx-0", netdev
->name
);
2001 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
2002 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2003 e1000_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
2007 adapter
->rx_ring
->itr_register
= adapter
->hw
.hw_addr
+
2008 E1000_EITR_82574(vector
);
2009 adapter
->rx_ring
->itr_val
= adapter
->itr
;
2012 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
2013 snprintf(adapter
->tx_ring
->name
,
2014 sizeof(adapter
->tx_ring
->name
) - 1,
2015 "%s-tx-0", netdev
->name
);
2017 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
2018 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2019 e1000_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
2023 adapter
->tx_ring
->itr_register
= adapter
->hw
.hw_addr
+
2024 E1000_EITR_82574(vector
);
2025 adapter
->tx_ring
->itr_val
= adapter
->itr
;
2028 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2029 e1000_msix_other
, 0, netdev
->name
, netdev
);
2033 e1000_configure_msix(adapter
);
2039 * e1000_request_irq - initialize interrupts
2041 * Attempts to configure interrupts using the best available
2042 * capabilities of the hardware and kernel.
2044 static int e1000_request_irq(struct e1000_adapter
*adapter
)
2046 struct net_device
*netdev
= adapter
->netdev
;
2049 if (adapter
->msix_entries
) {
2050 err
= e1000_request_msix(adapter
);
2053 /* fall back to MSI */
2054 e1000e_reset_interrupt_capability(adapter
);
2055 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
2056 e1000e_set_interrupt_capability(adapter
);
2058 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
2059 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi
, 0,
2060 netdev
->name
, netdev
);
2064 /* fall back to legacy interrupt */
2065 e1000e_reset_interrupt_capability(adapter
);
2066 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
2069 err
= request_irq(adapter
->pdev
->irq
, e1000_intr
, IRQF_SHARED
,
2070 netdev
->name
, netdev
);
2072 e_err("Unable to allocate interrupt, Error: %d\n", err
);
2077 static void e1000_free_irq(struct e1000_adapter
*adapter
)
2079 struct net_device
*netdev
= adapter
->netdev
;
2081 if (adapter
->msix_entries
) {
2084 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2087 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2090 /* Other Causes interrupt vector */
2091 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2095 free_irq(adapter
->pdev
->irq
, netdev
);
2099 * e1000_irq_disable - Mask off interrupt generation on the NIC
2101 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
2103 struct e1000_hw
*hw
= &adapter
->hw
;
2106 if (adapter
->msix_entries
)
2107 ew32(EIAC_82574
, 0);
2110 if (adapter
->msix_entries
) {
2112 for (i
= 0; i
< adapter
->num_vectors
; i
++)
2113 synchronize_irq(adapter
->msix_entries
[i
].vector
);
2115 synchronize_irq(adapter
->pdev
->irq
);
2120 * e1000_irq_enable - Enable default interrupt generation settings
2122 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
2124 struct e1000_hw
*hw
= &adapter
->hw
;
2126 if (adapter
->msix_entries
) {
2127 ew32(EIAC_82574
, adapter
->eiac_mask
& E1000_EIAC_MASK_82574
);
2128 ew32(IMS
, adapter
->eiac_mask
| E1000_IMS_OTHER
| E1000_IMS_LSC
);
2130 ew32(IMS
, IMS_ENABLE_MASK
);
2136 * e1000e_get_hw_control - get control of the h/w from f/w
2137 * @adapter: address of board private structure
2139 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2140 * For ASF and Pass Through versions of f/w this means that
2141 * the driver is loaded. For AMT version (only with 82573)
2142 * of the f/w this means that the network i/f is open.
2144 void e1000e_get_hw_control(struct e1000_adapter
*adapter
)
2146 struct e1000_hw
*hw
= &adapter
->hw
;
2150 /* Let firmware know the driver has taken over */
2151 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2153 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
2154 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2155 ctrl_ext
= er32(CTRL_EXT
);
2156 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
2161 * e1000e_release_hw_control - release control of the h/w to f/w
2162 * @adapter: address of board private structure
2164 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2165 * For ASF and Pass Through versions of f/w this means that the
2166 * driver is no longer loaded. For AMT version (only with 82573) i
2167 * of the f/w this means that the network i/f is closed.
2170 void e1000e_release_hw_control(struct e1000_adapter
*adapter
)
2172 struct e1000_hw
*hw
= &adapter
->hw
;
2176 /* Let firmware taken over control of h/w */
2177 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2179 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
2180 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2181 ctrl_ext
= er32(CTRL_EXT
);
2182 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
2187 * @e1000_alloc_ring - allocate memory for a ring structure
2189 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
2190 struct e1000_ring
*ring
)
2192 struct pci_dev
*pdev
= adapter
->pdev
;
2194 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
2203 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
2204 * @tx_ring: Tx descriptor ring
2206 * Return 0 on success, negative on failure
2208 int e1000e_setup_tx_resources(struct e1000_ring
*tx_ring
)
2210 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2211 int err
= -ENOMEM
, size
;
2213 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2214 tx_ring
->buffer_info
= vzalloc(size
);
2215 if (!tx_ring
->buffer_info
)
2218 /* round up to nearest 4K */
2219 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2220 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
2222 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
2226 tx_ring
->next_to_use
= 0;
2227 tx_ring
->next_to_clean
= 0;
2231 vfree(tx_ring
->buffer_info
);
2232 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2237 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
2238 * @rx_ring: Rx descriptor ring
2240 * Returns 0 on success, negative on failure
2242 int e1000e_setup_rx_resources(struct e1000_ring
*rx_ring
)
2244 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
2245 struct e1000_buffer
*buffer_info
;
2246 int i
, size
, desc_len
, err
= -ENOMEM
;
2248 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2249 rx_ring
->buffer_info
= vzalloc(size
);
2250 if (!rx_ring
->buffer_info
)
2253 for (i
= 0; i
< rx_ring
->count
; i
++) {
2254 buffer_info
= &rx_ring
->buffer_info
[i
];
2255 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
2256 sizeof(struct e1000_ps_page
),
2258 if (!buffer_info
->ps_pages
)
2262 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
2264 /* Round up to nearest 4K */
2265 rx_ring
->size
= rx_ring
->count
* desc_len
;
2266 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
2268 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
2272 rx_ring
->next_to_clean
= 0;
2273 rx_ring
->next_to_use
= 0;
2274 rx_ring
->rx_skb_top
= NULL
;
2279 for (i
= 0; i
< rx_ring
->count
; i
++) {
2280 buffer_info
= &rx_ring
->buffer_info
[i
];
2281 kfree(buffer_info
->ps_pages
);
2284 vfree(rx_ring
->buffer_info
);
2285 e_err("Unable to allocate memory for the receive descriptor ring\n");
2290 * e1000_clean_tx_ring - Free Tx Buffers
2291 * @tx_ring: Tx descriptor ring
2293 static void e1000_clean_tx_ring(struct e1000_ring
*tx_ring
)
2295 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2296 struct e1000_buffer
*buffer_info
;
2300 for (i
= 0; i
< tx_ring
->count
; i
++) {
2301 buffer_info
= &tx_ring
->buffer_info
[i
];
2302 e1000_put_txbuf(tx_ring
, buffer_info
);
2305 netdev_reset_queue(adapter
->netdev
);
2306 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2307 memset(tx_ring
->buffer_info
, 0, size
);
2309 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2311 tx_ring
->next_to_use
= 0;
2312 tx_ring
->next_to_clean
= 0;
2314 writel(0, tx_ring
->head
);
2315 writel(0, tx_ring
->tail
);
2319 * e1000e_free_tx_resources - Free Tx Resources per Queue
2320 * @tx_ring: Tx descriptor ring
2322 * Free all transmit software resources
2324 void e1000e_free_tx_resources(struct e1000_ring
*tx_ring
)
2326 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2327 struct pci_dev
*pdev
= adapter
->pdev
;
2329 e1000_clean_tx_ring(tx_ring
);
2331 vfree(tx_ring
->buffer_info
);
2332 tx_ring
->buffer_info
= NULL
;
2334 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
2336 tx_ring
->desc
= NULL
;
2340 * e1000e_free_rx_resources - Free Rx Resources
2341 * @rx_ring: Rx descriptor ring
2343 * Free all receive software resources
2345 void e1000e_free_rx_resources(struct e1000_ring
*rx_ring
)
2347 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
2348 struct pci_dev
*pdev
= adapter
->pdev
;
2351 e1000_clean_rx_ring(rx_ring
);
2353 for (i
= 0; i
< rx_ring
->count
; i
++)
2354 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
2356 vfree(rx_ring
->buffer_info
);
2357 rx_ring
->buffer_info
= NULL
;
2359 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
2361 rx_ring
->desc
= NULL
;
2365 * e1000_update_itr - update the dynamic ITR value based on statistics
2366 * @adapter: pointer to adapter
2367 * @itr_setting: current adapter->itr
2368 * @packets: the number of packets during this measurement interval
2369 * @bytes: the number of bytes during this measurement interval
2371 * Stores a new ITR value based on packets and byte
2372 * counts during the last interrupt. The advantage of per interrupt
2373 * computation is faster updates and more accurate ITR for the current
2374 * traffic pattern. Constants in this function were computed
2375 * based on theoretical maximum wire speed and thresholds were set based
2376 * on testing data as well as attempting to minimize response time
2377 * while increasing bulk throughput. This functionality is controlled
2378 * by the InterruptThrottleRate module parameter.
2380 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
2381 u16 itr_setting
, int packets
,
2384 unsigned int retval
= itr_setting
;
2389 switch (itr_setting
) {
2390 case lowest_latency
:
2391 /* handle TSO and jumbo frames */
2392 if (bytes
/packets
> 8000)
2393 retval
= bulk_latency
;
2394 else if ((packets
< 5) && (bytes
> 512))
2395 retval
= low_latency
;
2397 case low_latency
: /* 50 usec aka 20000 ints/s */
2398 if (bytes
> 10000) {
2399 /* this if handles the TSO accounting */
2400 if (bytes
/packets
> 8000)
2401 retval
= bulk_latency
;
2402 else if ((packets
< 10) || ((bytes
/packets
) > 1200))
2403 retval
= bulk_latency
;
2404 else if ((packets
> 35))
2405 retval
= lowest_latency
;
2406 } else if (bytes
/packets
> 2000) {
2407 retval
= bulk_latency
;
2408 } else if (packets
<= 2 && bytes
< 512) {
2409 retval
= lowest_latency
;
2412 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2413 if (bytes
> 25000) {
2415 retval
= low_latency
;
2416 } else if (bytes
< 6000) {
2417 retval
= low_latency
;
2425 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2427 struct e1000_hw
*hw
= &adapter
->hw
;
2429 u32 new_itr
= adapter
->itr
;
2431 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2432 if (adapter
->link_speed
!= SPEED_1000
) {
2438 if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
2443 adapter
->tx_itr
= e1000_update_itr(adapter
,
2445 adapter
->total_tx_packets
,
2446 adapter
->total_tx_bytes
);
2447 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2448 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
2449 adapter
->tx_itr
= low_latency
;
2451 adapter
->rx_itr
= e1000_update_itr(adapter
,
2453 adapter
->total_rx_packets
,
2454 adapter
->total_rx_bytes
);
2455 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2456 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2457 adapter
->rx_itr
= low_latency
;
2459 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2461 switch (current_itr
) {
2462 /* counts and packets in update_itr are dependent on these numbers */
2463 case lowest_latency
:
2467 new_itr
= 20000; /* aka hwitr = ~200 */
2477 if (new_itr
!= adapter
->itr
) {
2479 * this attempts to bias the interrupt rate towards Bulk
2480 * by adding intermediate steps when interrupt rate is
2483 new_itr
= new_itr
> adapter
->itr
?
2484 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2486 adapter
->itr
= new_itr
;
2487 adapter
->rx_ring
->itr_val
= new_itr
;
2488 if (adapter
->msix_entries
)
2489 adapter
->rx_ring
->set_itr
= 1;
2492 ew32(ITR
, 1000000000 / (new_itr
* 256));
2499 * e1000_alloc_queues - Allocate memory for all rings
2500 * @adapter: board private structure to initialize
2502 static int __devinit
e1000_alloc_queues(struct e1000_adapter
*adapter
)
2504 int size
= sizeof(struct e1000_ring
);
2506 adapter
->tx_ring
= kzalloc(size
, GFP_KERNEL
);
2507 if (!adapter
->tx_ring
)
2509 adapter
->tx_ring
->count
= adapter
->tx_ring_count
;
2510 adapter
->tx_ring
->adapter
= adapter
;
2512 adapter
->rx_ring
= kzalloc(size
, GFP_KERNEL
);
2513 if (!adapter
->rx_ring
)
2515 adapter
->rx_ring
->count
= adapter
->rx_ring_count
;
2516 adapter
->rx_ring
->adapter
= adapter
;
2520 e_err("Unable to allocate memory for queues\n");
2521 kfree(adapter
->rx_ring
);
2522 kfree(adapter
->tx_ring
);
2527 * e1000_clean - NAPI Rx polling callback
2528 * @napi: struct associated with this polling callback
2529 * @budget: amount of packets driver is allowed to process this poll
2531 static int e1000_clean(struct napi_struct
*napi
, int budget
)
2533 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
2534 struct e1000_hw
*hw
= &adapter
->hw
;
2535 struct net_device
*poll_dev
= adapter
->netdev
;
2536 int tx_cleaned
= 1, work_done
= 0;
2538 adapter
= netdev_priv(poll_dev
);
2540 if (adapter
->msix_entries
&&
2541 !(adapter
->rx_ring
->ims_val
& adapter
->tx_ring
->ims_val
))
2544 tx_cleaned
= e1000_clean_tx_irq(adapter
->tx_ring
);
2547 adapter
->clean_rx(adapter
->rx_ring
, &work_done
, budget
);
2552 /* If budget not fully consumed, exit the polling mode */
2553 if (work_done
< budget
) {
2554 if (adapter
->itr_setting
& 3)
2555 e1000_set_itr(adapter
);
2556 napi_complete(napi
);
2557 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
2558 if (adapter
->msix_entries
)
2559 ew32(IMS
, adapter
->rx_ring
->ims_val
);
2561 e1000_irq_enable(adapter
);
2568 static int e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
2570 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2571 struct e1000_hw
*hw
= &adapter
->hw
;
2574 /* don't update vlan cookie if already programmed */
2575 if ((adapter
->hw
.mng_cookie
.status
&
2576 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2577 (vid
== adapter
->mng_vlan_id
))
2580 /* add VID to filter table */
2581 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2582 index
= (vid
>> 5) & 0x7F;
2583 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2584 vfta
|= (1 << (vid
& 0x1F));
2585 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2588 set_bit(vid
, adapter
->active_vlans
);
2593 static int e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
2595 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2596 struct e1000_hw
*hw
= &adapter
->hw
;
2599 if ((adapter
->hw
.mng_cookie
.status
&
2600 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2601 (vid
== adapter
->mng_vlan_id
)) {
2602 /* release control to f/w */
2603 e1000e_release_hw_control(adapter
);
2607 /* remove VID from filter table */
2608 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2609 index
= (vid
>> 5) & 0x7F;
2610 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2611 vfta
&= ~(1 << (vid
& 0x1F));
2612 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2615 clear_bit(vid
, adapter
->active_vlans
);
2621 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
2622 * @adapter: board private structure to initialize
2624 static void e1000e_vlan_filter_disable(struct e1000_adapter
*adapter
)
2626 struct net_device
*netdev
= adapter
->netdev
;
2627 struct e1000_hw
*hw
= &adapter
->hw
;
2630 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2631 /* disable VLAN receive filtering */
2633 rctl
&= ~(E1000_RCTL_VFE
| E1000_RCTL_CFIEN
);
2636 if (adapter
->mng_vlan_id
!= (u16
)E1000_MNG_VLAN_NONE
) {
2637 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
2638 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2644 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
2645 * @adapter: board private structure to initialize
2647 static void e1000e_vlan_filter_enable(struct e1000_adapter
*adapter
)
2649 struct e1000_hw
*hw
= &adapter
->hw
;
2652 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2653 /* enable VLAN receive filtering */
2655 rctl
|= E1000_RCTL_VFE
;
2656 rctl
&= ~E1000_RCTL_CFIEN
;
2662 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping
2663 * @adapter: board private structure to initialize
2665 static void e1000e_vlan_strip_disable(struct e1000_adapter
*adapter
)
2667 struct e1000_hw
*hw
= &adapter
->hw
;
2670 /* disable VLAN tag insert/strip */
2672 ctrl
&= ~E1000_CTRL_VME
;
2677 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
2678 * @adapter: board private structure to initialize
2680 static void e1000e_vlan_strip_enable(struct e1000_adapter
*adapter
)
2682 struct e1000_hw
*hw
= &adapter
->hw
;
2685 /* enable VLAN tag insert/strip */
2687 ctrl
|= E1000_CTRL_VME
;
2691 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
2693 struct net_device
*netdev
= adapter
->netdev
;
2694 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
2695 u16 old_vid
= adapter
->mng_vlan_id
;
2697 if (adapter
->hw
.mng_cookie
.status
&
2698 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
2699 e1000_vlan_rx_add_vid(netdev
, vid
);
2700 adapter
->mng_vlan_id
= vid
;
2703 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) && (vid
!= old_vid
))
2704 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
2707 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
2711 e1000_vlan_rx_add_vid(adapter
->netdev
, 0);
2713 for_each_set_bit(vid
, adapter
->active_vlans
, VLAN_N_VID
)
2714 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
2717 static void e1000_init_manageability_pt(struct e1000_adapter
*adapter
)
2719 struct e1000_hw
*hw
= &adapter
->hw
;
2720 u32 manc
, manc2h
, mdef
, i
, j
;
2722 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
2728 * enable receiving management packets to the host. this will probably
2729 * generate destination unreachable messages from the host OS, but
2730 * the packets will be handled on SMBUS
2732 manc
|= E1000_MANC_EN_MNG2HOST
;
2733 manc2h
= er32(MANC2H
);
2735 switch (hw
->mac
.type
) {
2737 manc2h
|= (E1000_MANC2H_PORT_623
| E1000_MANC2H_PORT_664
);
2742 * Check if IPMI pass-through decision filter already exists;
2745 for (i
= 0, j
= 0; i
< 8; i
++) {
2746 mdef
= er32(MDEF(i
));
2748 /* Ignore filters with anything other than IPMI ports */
2749 if (mdef
& ~(E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2752 /* Enable this decision filter in MANC2H */
2759 if (j
== (E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2762 /* Create new decision filter in an empty filter */
2763 for (i
= 0, j
= 0; i
< 8; i
++)
2764 if (er32(MDEF(i
)) == 0) {
2765 ew32(MDEF(i
), (E1000_MDEF_PORT_623
|
2766 E1000_MDEF_PORT_664
));
2773 e_warn("Unable to create IPMI pass-through filter\n");
2777 ew32(MANC2H
, manc2h
);
2782 * e1000_configure_tx - Configure Transmit Unit after Reset
2783 * @adapter: board private structure
2785 * Configure the Tx unit of the MAC after a reset.
2787 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
2789 struct e1000_hw
*hw
= &adapter
->hw
;
2790 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2794 /* Setup the HW Tx Head and Tail descriptor pointers */
2795 tdba
= tx_ring
->dma
;
2796 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2797 ew32(TDBAL
, (tdba
& DMA_BIT_MASK(32)));
2798 ew32(TDBAH
, (tdba
>> 32));
2802 tx_ring
->head
= adapter
->hw
.hw_addr
+ E1000_TDH
;
2803 tx_ring
->tail
= adapter
->hw
.hw_addr
+ E1000_TDT
;
2805 /* Set the Tx Interrupt Delay register */
2806 ew32(TIDV
, adapter
->tx_int_delay
);
2807 /* Tx irq moderation */
2808 ew32(TADV
, adapter
->tx_abs_int_delay
);
2810 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
2811 u32 txdctl
= er32(TXDCTL(0));
2812 txdctl
&= ~(E1000_TXDCTL_PTHRESH
| E1000_TXDCTL_HTHRESH
|
2813 E1000_TXDCTL_WTHRESH
);
2815 * set up some performance related parameters to encourage the
2816 * hardware to use the bus more efficiently in bursts, depends
2817 * on the tx_int_delay to be enabled,
2818 * wthresh = 5 ==> burst write a cacheline (64 bytes) at a time
2819 * hthresh = 1 ==> prefetch when one or more available
2820 * pthresh = 0x1f ==> prefetch if internal cache 31 or less
2821 * BEWARE: this seems to work but should be considered first if
2822 * there are Tx hangs or other Tx related bugs
2824 txdctl
|= E1000_TXDCTL_DMA_BURST_ENABLE
;
2825 ew32(TXDCTL(0), txdctl
);
2827 /* erratum work around: set txdctl the same for both queues */
2828 ew32(TXDCTL(1), er32(TXDCTL(0)));
2830 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
2831 tarc
= er32(TARC(0));
2833 * set the speed mode bit, we'll clear it if we're not at
2834 * gigabit link later
2836 #define SPEED_MODE_BIT (1 << 21)
2837 tarc
|= SPEED_MODE_BIT
;
2838 ew32(TARC(0), tarc
);
2841 /* errata: program both queues to unweighted RR */
2842 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
2843 tarc
= er32(TARC(0));
2845 ew32(TARC(0), tarc
);
2846 tarc
= er32(TARC(1));
2848 ew32(TARC(1), tarc
);
2851 /* Setup Transmit Descriptor Settings for eop descriptor */
2852 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
2854 /* only set IDE if we are delaying interrupts using the timers */
2855 if (adapter
->tx_int_delay
)
2856 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
2858 /* enable Report Status bit */
2859 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
2861 hw
->mac
.ops
.config_collision_dist(hw
);
2865 * e1000_setup_rctl - configure the receive control registers
2866 * @adapter: Board private structure
2868 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2869 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2870 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
2872 struct e1000_hw
*hw
= &adapter
->hw
;
2876 /* Workaround Si errata on 82579 - configure jumbo frame flow */
2877 if (hw
->mac
.type
== e1000_pch2lan
) {
2880 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
)
2881 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, true);
2883 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, false);
2886 e_dbg("failed to enable jumbo frame workaround mode\n");
2889 /* Program MC offset vector base */
2891 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
2892 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
2893 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
2894 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
2896 /* Do not Store bad packets */
2897 rctl
&= ~E1000_RCTL_SBP
;
2899 /* Enable Long Packet receive */
2900 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
2901 rctl
&= ~E1000_RCTL_LPE
;
2903 rctl
|= E1000_RCTL_LPE
;
2905 /* Some systems expect that the CRC is included in SMBUS traffic. The
2906 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2907 * host memory when this is enabled
2909 if (adapter
->flags2
& FLAG2_CRC_STRIPPING
)
2910 rctl
|= E1000_RCTL_SECRC
;
2912 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
2913 if ((hw
->phy
.type
== e1000_phy_82577
) && (rctl
& E1000_RCTL_LPE
)) {
2916 e1e_rphy(hw
, PHY_REG(770, 26), &phy_data
);
2918 phy_data
|= (1 << 2);
2919 e1e_wphy(hw
, PHY_REG(770, 26), phy_data
);
2921 e1e_rphy(hw
, 22, &phy_data
);
2923 phy_data
|= (1 << 14);
2924 e1e_wphy(hw
, 0x10, 0x2823);
2925 e1e_wphy(hw
, 0x11, 0x0003);
2926 e1e_wphy(hw
, 22, phy_data
);
2929 /* Setup buffer sizes */
2930 rctl
&= ~E1000_RCTL_SZ_4096
;
2931 rctl
|= E1000_RCTL_BSEX
;
2932 switch (adapter
->rx_buffer_len
) {
2935 rctl
|= E1000_RCTL_SZ_2048
;
2936 rctl
&= ~E1000_RCTL_BSEX
;
2939 rctl
|= E1000_RCTL_SZ_4096
;
2942 rctl
|= E1000_RCTL_SZ_8192
;
2945 rctl
|= E1000_RCTL_SZ_16384
;
2949 /* Enable Extended Status in all Receive Descriptors */
2950 rfctl
= er32(RFCTL
);
2951 rfctl
|= E1000_RFCTL_EXTEN
;
2954 * 82571 and greater support packet-split where the protocol
2955 * header is placed in skb->data and the packet data is
2956 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2957 * In the case of a non-split, skb->data is linearly filled,
2958 * followed by the page buffers. Therefore, skb->data is
2959 * sized to hold the largest protocol header.
2961 * allocations using alloc_page take too long for regular MTU
2962 * so only enable packet split for jumbo frames
2964 * Using pages when the page size is greater than 16k wastes
2965 * a lot of memory, since we allocate 3 pages at all times
2968 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
2969 if ((pages
<= 3) && (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
2970 adapter
->rx_ps_pages
= pages
;
2972 adapter
->rx_ps_pages
= 0;
2974 if (adapter
->rx_ps_pages
) {
2978 * disable packet split support for IPv6 extension headers,
2979 * because some malformed IPv6 headers can hang the Rx
2981 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
2982 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
2984 /* Enable Packet split descriptors */
2985 rctl
|= E1000_RCTL_DTYP_PS
;
2987 psrctl
|= adapter
->rx_ps_bsize0
>>
2988 E1000_PSRCTL_BSIZE0_SHIFT
;
2990 switch (adapter
->rx_ps_pages
) {
2992 psrctl
|= PAGE_SIZE
<<
2993 E1000_PSRCTL_BSIZE3_SHIFT
;
2995 psrctl
|= PAGE_SIZE
<<
2996 E1000_PSRCTL_BSIZE2_SHIFT
;
2998 psrctl
|= PAGE_SIZE
>>
2999 E1000_PSRCTL_BSIZE1_SHIFT
;
3003 ew32(PSRCTL
, psrctl
);
3006 /* This is useful for sniffing bad packets. */
3007 if (adapter
->netdev
->features
& NETIF_F_RXALL
) {
3008 /* UPE and MPE will be handled by normal PROMISC logic
3009 * in e1000e_set_rx_mode */
3010 rctl
|= (E1000_RCTL_SBP
| /* Receive bad packets */
3011 E1000_RCTL_BAM
| /* RX All Bcast Pkts */
3012 E1000_RCTL_PMCF
); /* RX All MAC Ctrl Pkts */
3014 rctl
&= ~(E1000_RCTL_VFE
| /* Disable VLAN filter */
3015 E1000_RCTL_DPF
| /* Allow filtered pause */
3016 E1000_RCTL_CFIEN
); /* Dis VLAN CFIEN Filter */
3017 /* Do not mess with E1000_CTRL_VME, it affects transmit as well,
3018 * and that breaks VLANs.
3024 /* just started the receive unit, no need to restart */
3025 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
3029 * e1000_configure_rx - Configure Receive Unit after Reset
3030 * @adapter: board private structure
3032 * Configure the Rx unit of the MAC after a reset.
3034 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
3036 struct e1000_hw
*hw
= &adapter
->hw
;
3037 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
3039 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
3041 if (adapter
->rx_ps_pages
) {
3042 /* this is a 32 byte descriptor */
3043 rdlen
= rx_ring
->count
*
3044 sizeof(union e1000_rx_desc_packet_split
);
3045 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
3046 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
3047 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3048 rdlen
= rx_ring
->count
* sizeof(union e1000_rx_desc_extended
);
3049 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
3050 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
3052 rdlen
= rx_ring
->count
* sizeof(union e1000_rx_desc_extended
);
3053 adapter
->clean_rx
= e1000_clean_rx_irq
;
3054 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
3057 /* disable receives while setting up the descriptors */
3059 if (!(adapter
->flags2
& FLAG2_NO_DISABLE_RX
))
3060 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3062 usleep_range(10000, 20000);
3064 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
3066 * set the writeback threshold (only takes effect if the RDTR
3067 * is set). set GRAN=1 and write back up to 0x4 worth, and
3068 * enable prefetching of 0x20 Rx descriptors
3074 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE
);
3075 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE
);
3078 * override the delay timers for enabling bursting, only if
3079 * the value was not set by the user via module options
3081 if (adapter
->rx_int_delay
== DEFAULT_RDTR
)
3082 adapter
->rx_int_delay
= BURST_RDTR
;
3083 if (adapter
->rx_abs_int_delay
== DEFAULT_RADV
)
3084 adapter
->rx_abs_int_delay
= BURST_RADV
;
3087 /* set the Receive Delay Timer Register */
3088 ew32(RDTR
, adapter
->rx_int_delay
);
3090 /* irq moderation */
3091 ew32(RADV
, adapter
->rx_abs_int_delay
);
3092 if ((adapter
->itr_setting
!= 0) && (adapter
->itr
!= 0))
3093 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
3095 ctrl_ext
= er32(CTRL_EXT
);
3096 /* Auto-Mask interrupts upon ICR access */
3097 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
3098 ew32(IAM
, 0xffffffff);
3099 ew32(CTRL_EXT
, ctrl_ext
);
3103 * Setup the HW Rx Head and Tail Descriptor Pointers and
3104 * the Base and Length of the Rx Descriptor Ring
3106 rdba
= rx_ring
->dma
;
3107 ew32(RDBAL
, (rdba
& DMA_BIT_MASK(32)));
3108 ew32(RDBAH
, (rdba
>> 32));
3112 rx_ring
->head
= adapter
->hw
.hw_addr
+ E1000_RDH
;
3113 rx_ring
->tail
= adapter
->hw
.hw_addr
+ E1000_RDT
;
3115 /* Enable Receive Checksum Offload for TCP and UDP */
3116 rxcsum
= er32(RXCSUM
);
3117 if (adapter
->netdev
->features
& NETIF_F_RXCSUM
) {
3118 rxcsum
|= E1000_RXCSUM_TUOFL
;
3121 * IPv4 payload checksum for UDP fragments must be
3122 * used in conjunction with packet-split.
3124 if (adapter
->rx_ps_pages
)
3125 rxcsum
|= E1000_RXCSUM_IPPCSE
;
3127 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
3128 /* no need to clear IPPCSE as it defaults to 0 */
3130 ew32(RXCSUM
, rxcsum
);
3132 if (adapter
->hw
.mac
.type
== e1000_pch2lan
) {
3134 * With jumbo frames, excessive C-state transition
3135 * latencies result in dropped transactions.
3137 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3138 u32 rxdctl
= er32(RXDCTL(0));
3139 ew32(RXDCTL(0), rxdctl
| 0x3);
3140 pm_qos_update_request(&adapter
->netdev
->pm_qos_req
, 55);
3142 pm_qos_update_request(&adapter
->netdev
->pm_qos_req
,
3143 PM_QOS_DEFAULT_VALUE
);
3147 /* Enable Receives */
3152 * e1000e_write_mc_addr_list - write multicast addresses to MTA
3153 * @netdev: network interface device structure
3155 * Writes multicast address list to the MTA hash table.
3156 * Returns: -ENOMEM on failure
3157 * 0 on no addresses written
3158 * X on writing X addresses to MTA
3160 static int e1000e_write_mc_addr_list(struct net_device
*netdev
)
3162 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3163 struct e1000_hw
*hw
= &adapter
->hw
;
3164 struct netdev_hw_addr
*ha
;
3168 if (netdev_mc_empty(netdev
)) {
3169 /* nothing to program, so clear mc list */
3170 hw
->mac
.ops
.update_mc_addr_list(hw
, NULL
, 0);
3174 mta_list
= kzalloc(netdev_mc_count(netdev
) * ETH_ALEN
, GFP_ATOMIC
);
3178 /* update_mc_addr_list expects a packed array of only addresses. */
3180 netdev_for_each_mc_addr(ha
, netdev
)
3181 memcpy(mta_list
+ (i
++ * ETH_ALEN
), ha
->addr
, ETH_ALEN
);
3183 hw
->mac
.ops
.update_mc_addr_list(hw
, mta_list
, i
);
3186 return netdev_mc_count(netdev
);
3190 * e1000e_write_uc_addr_list - write unicast addresses to RAR table
3191 * @netdev: network interface device structure
3193 * Writes unicast address list to the RAR table.
3194 * Returns: -ENOMEM on failure/insufficient address space
3195 * 0 on no addresses written
3196 * X on writing X addresses to the RAR table
3198 static int e1000e_write_uc_addr_list(struct net_device
*netdev
)
3200 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3201 struct e1000_hw
*hw
= &adapter
->hw
;
3202 unsigned int rar_entries
= hw
->mac
.rar_entry_count
;
3205 /* save a rar entry for our hardware address */
3208 /* save a rar entry for the LAA workaround */
3209 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
)
3212 /* return ENOMEM indicating insufficient memory for addresses */
3213 if (netdev_uc_count(netdev
) > rar_entries
)
3216 if (!netdev_uc_empty(netdev
) && rar_entries
) {
3217 struct netdev_hw_addr
*ha
;
3220 * write the addresses in reverse order to avoid write
3223 netdev_for_each_uc_addr(ha
, netdev
) {
3226 e1000e_rar_set(hw
, ha
->addr
, rar_entries
--);
3231 /* zero out the remaining RAR entries not used above */
3232 for (; rar_entries
> 0; rar_entries
--) {
3233 ew32(RAH(rar_entries
), 0);
3234 ew32(RAL(rar_entries
), 0);
3242 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set
3243 * @netdev: network interface device structure
3245 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast
3246 * address list or the network interface flags are updated. This routine is
3247 * responsible for configuring the hardware for proper unicast, multicast,
3248 * promiscuous mode, and all-multi behavior.
3250 static void e1000e_set_rx_mode(struct net_device
*netdev
)
3252 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3253 struct e1000_hw
*hw
= &adapter
->hw
;
3256 /* Check for Promiscuous and All Multicast modes */
3259 /* clear the affected bits */
3260 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3262 if (netdev
->flags
& IFF_PROMISC
) {
3263 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3264 /* Do not hardware filter VLANs in promisc mode */
3265 e1000e_vlan_filter_disable(adapter
);
3269 if (netdev
->flags
& IFF_ALLMULTI
) {
3270 rctl
|= E1000_RCTL_MPE
;
3273 * Write addresses to the MTA, if the attempt fails
3274 * then we should just turn on promiscuous mode so
3275 * that we can at least receive multicast traffic
3277 count
= e1000e_write_mc_addr_list(netdev
);
3279 rctl
|= E1000_RCTL_MPE
;
3281 e1000e_vlan_filter_enable(adapter
);
3283 * Write addresses to available RAR registers, if there is not
3284 * sufficient space to store all the addresses then enable
3285 * unicast promiscuous mode
3287 count
= e1000e_write_uc_addr_list(netdev
);
3289 rctl
|= E1000_RCTL_UPE
;
3294 if (netdev
->features
& NETIF_F_HW_VLAN_RX
)
3295 e1000e_vlan_strip_enable(adapter
);
3297 e1000e_vlan_strip_disable(adapter
);
3300 static void e1000e_setup_rss_hash(struct e1000_adapter
*adapter
)
3302 struct e1000_hw
*hw
= &adapter
->hw
;
3305 static const u32 rsskey
[10] = {
3306 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0,
3307 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe
3310 /* Fill out hash function seed */
3311 for (i
= 0; i
< 10; i
++)
3312 ew32(RSSRK(i
), rsskey
[i
]);
3314 /* Direct all traffic to queue 0 */
3315 for (i
= 0; i
< 32; i
++)
3319 * Disable raw packet checksumming so that RSS hash is placed in
3320 * descriptor on writeback.
3322 rxcsum
= er32(RXCSUM
);
3323 rxcsum
|= E1000_RXCSUM_PCSD
;
3325 ew32(RXCSUM
, rxcsum
);
3327 mrqc
= (E1000_MRQC_RSS_FIELD_IPV4
|
3328 E1000_MRQC_RSS_FIELD_IPV4_TCP
|
3329 E1000_MRQC_RSS_FIELD_IPV6
|
3330 E1000_MRQC_RSS_FIELD_IPV6_TCP
|
3331 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX
);
3337 * e1000_configure - configure the hardware for Rx and Tx
3338 * @adapter: private board structure
3340 static void e1000_configure(struct e1000_adapter
*adapter
)
3342 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
3344 e1000e_set_rx_mode(adapter
->netdev
);
3346 e1000_restore_vlan(adapter
);
3347 e1000_init_manageability_pt(adapter
);
3349 e1000_configure_tx(adapter
);
3351 if (adapter
->netdev
->features
& NETIF_F_RXHASH
)
3352 e1000e_setup_rss_hash(adapter
);
3353 e1000_setup_rctl(adapter
);
3354 e1000_configure_rx(adapter
);
3355 adapter
->alloc_rx_buf(rx_ring
, e1000_desc_unused(rx_ring
), GFP_KERNEL
);
3359 * e1000e_power_up_phy - restore link in case the phy was powered down
3360 * @adapter: address of board private structure
3362 * The phy may be powered down to save power and turn off link when the
3363 * driver is unloaded and wake on lan is not enabled (among others)
3364 * *** this routine MUST be followed by a call to e1000e_reset ***
3366 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
3368 if (adapter
->hw
.phy
.ops
.power_up
)
3369 adapter
->hw
.phy
.ops
.power_up(&adapter
->hw
);
3371 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
3375 * e1000_power_down_phy - Power down the PHY
3377 * Power down the PHY so no link is implied when interface is down.
3378 * The PHY cannot be powered down if management or WoL is active.
3380 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
3382 /* WoL is enabled */
3386 if (adapter
->hw
.phy
.ops
.power_down
)
3387 adapter
->hw
.phy
.ops
.power_down(&adapter
->hw
);
3391 * e1000e_reset - bring the hardware into a known good state
3393 * This function boots the hardware and enables some settings that
3394 * require a configuration cycle of the hardware - those cannot be
3395 * set/changed during runtime. After reset the device needs to be
3396 * properly configured for Rx, Tx etc.
3398 void e1000e_reset(struct e1000_adapter
*adapter
)
3400 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3401 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
3402 struct e1000_hw
*hw
= &adapter
->hw
;
3403 u32 tx_space
, min_tx_space
, min_rx_space
;
3404 u32 pba
= adapter
->pba
;
3407 /* reset Packet Buffer Allocation to default */
3410 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3412 * To maintain wire speed transmits, the Tx FIFO should be
3413 * large enough to accommodate two full transmit packets,
3414 * rounded up to the next 1KB and expressed in KB. Likewise,
3415 * the Rx FIFO should be large enough to accommodate at least
3416 * one full receive packet and is similarly rounded up and
3420 /* upper 16 bits has Tx packet buffer allocation size in KB */
3421 tx_space
= pba
>> 16;
3422 /* lower 16 bits has Rx packet buffer allocation size in KB */
3425 * the Tx fifo also stores 16 bytes of information about the Tx
3426 * but don't include ethernet FCS because hardware appends it
3428 min_tx_space
= (adapter
->max_frame_size
+
3429 sizeof(struct e1000_tx_desc
) -
3431 min_tx_space
= ALIGN(min_tx_space
, 1024);
3432 min_tx_space
>>= 10;
3433 /* software strips receive CRC, so leave room for it */
3434 min_rx_space
= adapter
->max_frame_size
;
3435 min_rx_space
= ALIGN(min_rx_space
, 1024);
3436 min_rx_space
>>= 10;
3439 * If current Tx allocation is less than the min Tx FIFO size,
3440 * and the min Tx FIFO size is less than the current Rx FIFO
3441 * allocation, take space away from current Rx allocation
3443 if ((tx_space
< min_tx_space
) &&
3444 ((min_tx_space
- tx_space
) < pba
)) {
3445 pba
-= min_tx_space
- tx_space
;
3448 * if short on Rx space, Rx wins and must trump Tx
3449 * adjustment or use Early Receive if available
3451 if (pba
< min_rx_space
)
3459 * flow control settings
3461 * The high water mark must be low enough to fit one full frame
3462 * (or the size used for early receive) above it in the Rx FIFO.
3463 * Set it to the lower of:
3464 * - 90% of the Rx FIFO size, and
3465 * - the full Rx FIFO size minus one full frame
3467 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
3468 fc
->pause_time
= 0xFFFF;
3470 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
3471 fc
->send_xon
= true;
3472 fc
->current_mode
= fc
->requested_mode
;
3474 switch (hw
->mac
.type
) {
3476 case e1000_ich10lan
:
3477 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3480 fc
->high_water
= 0x2800;
3481 fc
->low_water
= fc
->high_water
- 8;
3486 hwm
= min(((pba
<< 10) * 9 / 10),
3487 ((pba
<< 10) - adapter
->max_frame_size
));
3489 fc
->high_water
= hwm
& E1000_FCRTH_RTH
; /* 8-byte granularity */
3490 fc
->low_water
= fc
->high_water
- 8;
3494 * Workaround PCH LOM adapter hangs with certain network
3495 * loads. If hangs persist, try disabling Tx flow control.
3497 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3498 fc
->high_water
= 0x3500;
3499 fc
->low_water
= 0x1500;
3501 fc
->high_water
= 0x5000;
3502 fc
->low_water
= 0x3000;
3504 fc
->refresh_time
= 0x1000;
3507 fc
->high_water
= 0x05C20;
3508 fc
->low_water
= 0x05048;
3509 fc
->pause_time
= 0x0650;
3510 fc
->refresh_time
= 0x0400;
3511 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3519 * Disable Adaptive Interrupt Moderation if 2 full packets cannot
3520 * fit in receive buffer.
3522 if (adapter
->itr_setting
& 0x3) {
3523 if ((adapter
->max_frame_size
* 2) > (pba
<< 10)) {
3524 if (!(adapter
->flags2
& FLAG2_DISABLE_AIM
)) {
3525 dev_info(&adapter
->pdev
->dev
,
3526 "Interrupt Throttle Rate turned off\n");
3527 adapter
->flags2
|= FLAG2_DISABLE_AIM
;
3530 } else if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
3531 dev_info(&adapter
->pdev
->dev
,
3532 "Interrupt Throttle Rate turned on\n");
3533 adapter
->flags2
&= ~FLAG2_DISABLE_AIM
;
3534 adapter
->itr
= 20000;
3535 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
3539 /* Allow time for pending master requests to run */
3540 mac
->ops
.reset_hw(hw
);
3543 * For parts with AMT enabled, let the firmware know
3544 * that the network interface is in control
3546 if (adapter
->flags
& FLAG_HAS_AMT
)
3547 e1000e_get_hw_control(adapter
);
3551 if (mac
->ops
.init_hw(hw
))
3552 e_err("Hardware Error\n");
3554 e1000_update_mng_vlan(adapter
);
3556 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3557 ew32(VET
, ETH_P_8021Q
);
3559 e1000e_reset_adaptive(hw
);
3561 if (!netif_running(adapter
->netdev
) &&
3562 !test_bit(__E1000_TESTING
, &adapter
->state
)) {
3563 e1000_power_down_phy(adapter
);
3567 e1000_get_phy_info(hw
);
3569 if ((adapter
->flags
& FLAG_HAS_SMART_POWER_DOWN
) &&
3570 !(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
3573 * speed up time to link by disabling smart power down, ignore
3574 * the return value of this function because there is nothing
3575 * different we would do if it failed
3577 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
3578 phy_data
&= ~IGP02E1000_PM_SPD
;
3579 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
3583 int e1000e_up(struct e1000_adapter
*adapter
)
3585 struct e1000_hw
*hw
= &adapter
->hw
;
3587 /* hardware has been reset, we need to reload some things */
3588 e1000_configure(adapter
);
3590 clear_bit(__E1000_DOWN
, &adapter
->state
);
3592 if (adapter
->msix_entries
)
3593 e1000_configure_msix(adapter
);
3594 e1000_irq_enable(adapter
);
3596 netif_start_queue(adapter
->netdev
);
3598 /* fire a link change interrupt to start the watchdog */
3599 if (adapter
->msix_entries
)
3600 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
3602 ew32(ICS
, E1000_ICS_LSC
);
3607 static void e1000e_flush_descriptors(struct e1000_adapter
*adapter
)
3609 struct e1000_hw
*hw
= &adapter
->hw
;
3611 if (!(adapter
->flags2
& FLAG2_DMA_BURST
))
3614 /* flush pending descriptor writebacks to memory */
3615 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
3616 ew32(RDTR
, adapter
->rx_int_delay
| E1000_RDTR_FPD
);
3618 /* execute the writes immediately */
3622 static void e1000e_update_stats(struct e1000_adapter
*adapter
);
3624 void e1000e_down(struct e1000_adapter
*adapter
)
3626 struct net_device
*netdev
= adapter
->netdev
;
3627 struct e1000_hw
*hw
= &adapter
->hw
;
3631 * signal that we're down so the interrupt handler does not
3632 * reschedule our watchdog timer
3634 set_bit(__E1000_DOWN
, &adapter
->state
);
3636 /* disable receives in the hardware */
3638 if (!(adapter
->flags2
& FLAG2_NO_DISABLE_RX
))
3639 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3640 /* flush and sleep below */
3642 netif_stop_queue(netdev
);
3644 /* disable transmits in the hardware */
3646 tctl
&= ~E1000_TCTL_EN
;
3649 /* flush both disables and wait for them to finish */
3651 usleep_range(10000, 20000);
3653 e1000_irq_disable(adapter
);
3655 del_timer_sync(&adapter
->watchdog_timer
);
3656 del_timer_sync(&adapter
->phy_info_timer
);
3658 netif_carrier_off(netdev
);
3660 spin_lock(&adapter
->stats64_lock
);
3661 e1000e_update_stats(adapter
);
3662 spin_unlock(&adapter
->stats64_lock
);
3664 e1000e_flush_descriptors(adapter
);
3665 e1000_clean_tx_ring(adapter
->tx_ring
);
3666 e1000_clean_rx_ring(adapter
->rx_ring
);
3668 adapter
->link_speed
= 0;
3669 adapter
->link_duplex
= 0;
3671 if (!pci_channel_offline(adapter
->pdev
))
3672 e1000e_reset(adapter
);
3675 * TODO: for power management, we could drop the link and
3676 * pci_disable_device here.
3680 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
3683 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
3684 usleep_range(1000, 2000);
3685 e1000e_down(adapter
);
3687 clear_bit(__E1000_RESETTING
, &adapter
->state
);
3691 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
3692 * @adapter: board private structure to initialize
3694 * e1000_sw_init initializes the Adapter private data structure.
3695 * Fields are initialized based on PCI device information and
3696 * OS network device settings (MTU size).
3698 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
3700 struct net_device
*netdev
= adapter
->netdev
;
3702 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
3703 adapter
->rx_ps_bsize0
= 128;
3704 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3705 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
3706 adapter
->tx_ring_count
= E1000_DEFAULT_TXD
;
3707 adapter
->rx_ring_count
= E1000_DEFAULT_RXD
;
3709 spin_lock_init(&adapter
->stats64_lock
);
3711 e1000e_set_interrupt_capability(adapter
);
3713 if (e1000_alloc_queues(adapter
))
3716 /* Explicitly disable IRQ since the NIC can be in any state. */
3717 e1000_irq_disable(adapter
);
3719 set_bit(__E1000_DOWN
, &adapter
->state
);
3724 * e1000_intr_msi_test - Interrupt Handler
3725 * @irq: interrupt number
3726 * @data: pointer to a network interface device structure
3728 static irqreturn_t
e1000_intr_msi_test(int irq
, void *data
)
3730 struct net_device
*netdev
= data
;
3731 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3732 struct e1000_hw
*hw
= &adapter
->hw
;
3733 u32 icr
= er32(ICR
);
3735 e_dbg("icr is %08X\n", icr
);
3736 if (icr
& E1000_ICR_RXSEQ
) {
3737 adapter
->flags
&= ~FLAG_MSI_TEST_FAILED
;
3745 * e1000_test_msi_interrupt - Returns 0 for successful test
3746 * @adapter: board private struct
3748 * code flow taken from tg3.c
3750 static int e1000_test_msi_interrupt(struct e1000_adapter
*adapter
)
3752 struct net_device
*netdev
= adapter
->netdev
;
3753 struct e1000_hw
*hw
= &adapter
->hw
;
3756 /* poll_enable hasn't been called yet, so don't need disable */
3757 /* clear any pending events */
3760 /* free the real vector and request a test handler */
3761 e1000_free_irq(adapter
);
3762 e1000e_reset_interrupt_capability(adapter
);
3764 /* Assume that the test fails, if it succeeds then the test
3765 * MSI irq handler will unset this flag */
3766 adapter
->flags
|= FLAG_MSI_TEST_FAILED
;
3768 err
= pci_enable_msi(adapter
->pdev
);
3770 goto msi_test_failed
;
3772 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi_test
, 0,
3773 netdev
->name
, netdev
);
3775 pci_disable_msi(adapter
->pdev
);
3776 goto msi_test_failed
;
3781 e1000_irq_enable(adapter
);
3783 /* fire an unusual interrupt on the test handler */
3784 ew32(ICS
, E1000_ICS_RXSEQ
);
3788 e1000_irq_disable(adapter
);
3792 if (adapter
->flags
& FLAG_MSI_TEST_FAILED
) {
3793 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
3794 e_info("MSI interrupt test failed, using legacy interrupt.\n");
3796 e_dbg("MSI interrupt test succeeded!\n");
3799 free_irq(adapter
->pdev
->irq
, netdev
);
3800 pci_disable_msi(adapter
->pdev
);
3803 e1000e_set_interrupt_capability(adapter
);
3804 return e1000_request_irq(adapter
);
3808 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3809 * @adapter: board private struct
3811 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3813 static int e1000_test_msi(struct e1000_adapter
*adapter
)
3818 if (!(adapter
->flags
& FLAG_MSI_ENABLED
))
3821 /* disable SERR in case the MSI write causes a master abort */
3822 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3823 if (pci_cmd
& PCI_COMMAND_SERR
)
3824 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
,
3825 pci_cmd
& ~PCI_COMMAND_SERR
);
3827 err
= e1000_test_msi_interrupt(adapter
);
3829 /* re-enable SERR */
3830 if (pci_cmd
& PCI_COMMAND_SERR
) {
3831 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3832 pci_cmd
|= PCI_COMMAND_SERR
;
3833 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
, pci_cmd
);
3840 * e1000_open - Called when a network interface is made active
3841 * @netdev: network interface device structure
3843 * Returns 0 on success, negative value on failure
3845 * The open entry point is called when a network interface is made
3846 * active by the system (IFF_UP). At this point all resources needed
3847 * for transmit and receive operations are allocated, the interrupt
3848 * handler is registered with the OS, the watchdog timer is started,
3849 * and the stack is notified that the interface is ready.
3851 static int e1000_open(struct net_device
*netdev
)
3853 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3854 struct e1000_hw
*hw
= &adapter
->hw
;
3855 struct pci_dev
*pdev
= adapter
->pdev
;
3858 /* disallow open during test */
3859 if (test_bit(__E1000_TESTING
, &adapter
->state
))
3862 pm_runtime_get_sync(&pdev
->dev
);
3864 netif_carrier_off(netdev
);
3866 /* allocate transmit descriptors */
3867 err
= e1000e_setup_tx_resources(adapter
->tx_ring
);
3871 /* allocate receive descriptors */
3872 err
= e1000e_setup_rx_resources(adapter
->rx_ring
);
3877 * If AMT is enabled, let the firmware know that the network
3878 * interface is now open and reset the part to a known state.
3880 if (adapter
->flags
& FLAG_HAS_AMT
) {
3881 e1000e_get_hw_control(adapter
);
3882 e1000e_reset(adapter
);
3885 e1000e_power_up_phy(adapter
);
3887 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
3888 if ((adapter
->hw
.mng_cookie
.status
&
3889 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
3890 e1000_update_mng_vlan(adapter
);
3892 /* DMA latency requirement to workaround jumbo issue */
3893 if (adapter
->hw
.mac
.type
== e1000_pch2lan
)
3894 pm_qos_add_request(&adapter
->netdev
->pm_qos_req
,
3895 PM_QOS_CPU_DMA_LATENCY
,
3896 PM_QOS_DEFAULT_VALUE
);
3899 * before we allocate an interrupt, we must be ready to handle it.
3900 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3901 * as soon as we call pci_request_irq, so we have to setup our
3902 * clean_rx handler before we do so.
3904 e1000_configure(adapter
);
3906 err
= e1000_request_irq(adapter
);
3911 * Work around PCIe errata with MSI interrupts causing some chipsets to
3912 * ignore e1000e MSI messages, which means we need to test our MSI
3915 if (adapter
->int_mode
!= E1000E_INT_MODE_LEGACY
) {
3916 err
= e1000_test_msi(adapter
);
3918 e_err("Interrupt allocation failed\n");
3923 /* From here on the code is the same as e1000e_up() */
3924 clear_bit(__E1000_DOWN
, &adapter
->state
);
3926 napi_enable(&adapter
->napi
);
3928 e1000_irq_enable(adapter
);
3930 adapter
->tx_hang_recheck
= false;
3931 netif_start_queue(netdev
);
3933 adapter
->idle_check
= true;
3934 pm_runtime_put(&pdev
->dev
);
3936 /* fire a link status change interrupt to start the watchdog */
3937 if (adapter
->msix_entries
)
3938 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
3940 ew32(ICS
, E1000_ICS_LSC
);
3945 e1000e_release_hw_control(adapter
);
3946 e1000_power_down_phy(adapter
);
3947 e1000e_free_rx_resources(adapter
->rx_ring
);
3949 e1000e_free_tx_resources(adapter
->tx_ring
);
3951 e1000e_reset(adapter
);
3952 pm_runtime_put_sync(&pdev
->dev
);
3958 * e1000_close - Disables a network interface
3959 * @netdev: network interface device structure
3961 * Returns 0, this is not allowed to fail
3963 * The close entry point is called when an interface is de-activated
3964 * by the OS. The hardware is still under the drivers control, but
3965 * needs to be disabled. A global MAC reset is issued to stop the
3966 * hardware, and all transmit and receive resources are freed.
3968 static int e1000_close(struct net_device
*netdev
)
3970 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3971 struct pci_dev
*pdev
= adapter
->pdev
;
3973 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
3975 pm_runtime_get_sync(&pdev
->dev
);
3977 napi_disable(&adapter
->napi
);
3979 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
3980 e1000e_down(adapter
);
3981 e1000_free_irq(adapter
);
3983 e1000_power_down_phy(adapter
);
3985 e1000e_free_tx_resources(adapter
->tx_ring
);
3986 e1000e_free_rx_resources(adapter
->rx_ring
);
3989 * kill manageability vlan ID if supported, but not if a vlan with
3990 * the same ID is registered on the host OS (let 8021q kill it)
3992 if (adapter
->hw
.mng_cookie
.status
&
3993 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)
3994 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
3997 * If AMT is enabled, let the firmware know that the network
3998 * interface is now closed
4000 if ((adapter
->flags
& FLAG_HAS_AMT
) &&
4001 !test_bit(__E1000_TESTING
, &adapter
->state
))
4002 e1000e_release_hw_control(adapter
);
4004 if (adapter
->hw
.mac
.type
== e1000_pch2lan
)
4005 pm_qos_remove_request(&adapter
->netdev
->pm_qos_req
);
4007 pm_runtime_put_sync(&pdev
->dev
);
4012 * e1000_set_mac - Change the Ethernet Address of the NIC
4013 * @netdev: network interface device structure
4014 * @p: pointer to an address structure
4016 * Returns 0 on success, negative on failure
4018 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
4020 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4021 struct sockaddr
*addr
= p
;
4023 if (!is_valid_ether_addr(addr
->sa_data
))
4024 return -EADDRNOTAVAIL
;
4026 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
4027 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
4029 e1000e_rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
4031 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
4032 /* activate the work around */
4033 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
4036 * Hold a copy of the LAA in RAR[14] This is done so that
4037 * between the time RAR[0] gets clobbered and the time it
4038 * gets fixed (in e1000_watchdog), the actual LAA is in one
4039 * of the RARs and no incoming packets directed to this port
4040 * are dropped. Eventually the LAA will be in RAR[0] and
4043 e1000e_rar_set(&adapter
->hw
,
4044 adapter
->hw
.mac
.addr
,
4045 adapter
->hw
.mac
.rar_entry_count
- 1);
4052 * e1000e_update_phy_task - work thread to update phy
4053 * @work: pointer to our work struct
4055 * this worker thread exists because we must acquire a
4056 * semaphore to read the phy, which we could msleep while
4057 * waiting for it, and we can't msleep in a timer.
4059 static void e1000e_update_phy_task(struct work_struct
*work
)
4061 struct e1000_adapter
*adapter
= container_of(work
,
4062 struct e1000_adapter
, update_phy_task
);
4064 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4067 e1000_get_phy_info(&adapter
->hw
);
4071 * Need to wait a few seconds after link up to get diagnostic information from
4074 static void e1000_update_phy_info(unsigned long data
)
4076 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
4078 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4081 schedule_work(&adapter
->update_phy_task
);
4085 * e1000e_update_phy_stats - Update the PHY statistics counters
4086 * @adapter: board private structure
4088 * Read/clear the upper 16-bit PHY registers and read/accumulate lower
4090 static void e1000e_update_phy_stats(struct e1000_adapter
*adapter
)
4092 struct e1000_hw
*hw
= &adapter
->hw
;
4096 ret_val
= hw
->phy
.ops
.acquire(hw
);
4101 * A page set is expensive so check if already on desired page.
4102 * If not, set to the page with the PHY status registers.
4105 ret_val
= e1000e_read_phy_reg_mdic(hw
, IGP01E1000_PHY_PAGE_SELECT
,
4109 if (phy_data
!= (HV_STATS_PAGE
<< IGP_PAGE_SHIFT
)) {
4110 ret_val
= hw
->phy
.ops
.set_page(hw
,
4111 HV_STATS_PAGE
<< IGP_PAGE_SHIFT
);
4116 /* Single Collision Count */
4117 hw
->phy
.ops
.read_reg_page(hw
, HV_SCC_UPPER
, &phy_data
);
4118 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_SCC_LOWER
, &phy_data
);
4120 adapter
->stats
.scc
+= phy_data
;
4122 /* Excessive Collision Count */
4123 hw
->phy
.ops
.read_reg_page(hw
, HV_ECOL_UPPER
, &phy_data
);
4124 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_ECOL_LOWER
, &phy_data
);
4126 adapter
->stats
.ecol
+= phy_data
;
4128 /* Multiple Collision Count */
4129 hw
->phy
.ops
.read_reg_page(hw
, HV_MCC_UPPER
, &phy_data
);
4130 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_MCC_LOWER
, &phy_data
);
4132 adapter
->stats
.mcc
+= phy_data
;
4134 /* Late Collision Count */
4135 hw
->phy
.ops
.read_reg_page(hw
, HV_LATECOL_UPPER
, &phy_data
);
4136 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_LATECOL_LOWER
, &phy_data
);
4138 adapter
->stats
.latecol
+= phy_data
;
4140 /* Collision Count - also used for adaptive IFS */
4141 hw
->phy
.ops
.read_reg_page(hw
, HV_COLC_UPPER
, &phy_data
);
4142 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_COLC_LOWER
, &phy_data
);
4144 hw
->mac
.collision_delta
= phy_data
;
4147 hw
->phy
.ops
.read_reg_page(hw
, HV_DC_UPPER
, &phy_data
);
4148 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_DC_LOWER
, &phy_data
);
4150 adapter
->stats
.dc
+= phy_data
;
4152 /* Transmit with no CRS */
4153 hw
->phy
.ops
.read_reg_page(hw
, HV_TNCRS_UPPER
, &phy_data
);
4154 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_TNCRS_LOWER
, &phy_data
);
4156 adapter
->stats
.tncrs
+= phy_data
;
4159 hw
->phy
.ops
.release(hw
);
4163 * e1000e_update_stats - Update the board statistics counters
4164 * @adapter: board private structure
4166 static void e1000e_update_stats(struct e1000_adapter
*adapter
)
4168 struct net_device
*netdev
= adapter
->netdev
;
4169 struct e1000_hw
*hw
= &adapter
->hw
;
4170 struct pci_dev
*pdev
= adapter
->pdev
;
4173 * Prevent stats update while adapter is being reset, or if the pci
4174 * connection is down.
4176 if (adapter
->link_speed
== 0)
4178 if (pci_channel_offline(pdev
))
4181 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
4182 adapter
->stats
.gprc
+= er32(GPRC
);
4183 adapter
->stats
.gorc
+= er32(GORCL
);
4184 er32(GORCH
); /* Clear gorc */
4185 adapter
->stats
.bprc
+= er32(BPRC
);
4186 adapter
->stats
.mprc
+= er32(MPRC
);
4187 adapter
->stats
.roc
+= er32(ROC
);
4189 adapter
->stats
.mpc
+= er32(MPC
);
4191 /* Half-duplex statistics */
4192 if (adapter
->link_duplex
== HALF_DUPLEX
) {
4193 if (adapter
->flags2
& FLAG2_HAS_PHY_STATS
) {
4194 e1000e_update_phy_stats(adapter
);
4196 adapter
->stats
.scc
+= er32(SCC
);
4197 adapter
->stats
.ecol
+= er32(ECOL
);
4198 adapter
->stats
.mcc
+= er32(MCC
);
4199 adapter
->stats
.latecol
+= er32(LATECOL
);
4200 adapter
->stats
.dc
+= er32(DC
);
4202 hw
->mac
.collision_delta
= er32(COLC
);
4204 if ((hw
->mac
.type
!= e1000_82574
) &&
4205 (hw
->mac
.type
!= e1000_82583
))
4206 adapter
->stats
.tncrs
+= er32(TNCRS
);
4208 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
4211 adapter
->stats
.xonrxc
+= er32(XONRXC
);
4212 adapter
->stats
.xontxc
+= er32(XONTXC
);
4213 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
4214 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
4215 adapter
->stats
.gptc
+= er32(GPTC
);
4216 adapter
->stats
.gotc
+= er32(GOTCL
);
4217 er32(GOTCH
); /* Clear gotc */
4218 adapter
->stats
.rnbc
+= er32(RNBC
);
4219 adapter
->stats
.ruc
+= er32(RUC
);
4221 adapter
->stats
.mptc
+= er32(MPTC
);
4222 adapter
->stats
.bptc
+= er32(BPTC
);
4224 /* used for adaptive IFS */
4226 hw
->mac
.tx_packet_delta
= er32(TPT
);
4227 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
4229 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
4230 adapter
->stats
.rxerrc
+= er32(RXERRC
);
4231 adapter
->stats
.cexterr
+= er32(CEXTERR
);
4232 adapter
->stats
.tsctc
+= er32(TSCTC
);
4233 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
4235 /* Fill out the OS statistics structure */
4236 netdev
->stats
.multicast
= adapter
->stats
.mprc
;
4237 netdev
->stats
.collisions
= adapter
->stats
.colc
;
4242 * RLEC on some newer hardware can be incorrect so build
4243 * our own version based on RUC and ROC
4245 netdev
->stats
.rx_errors
= adapter
->stats
.rxerrc
+
4246 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
4247 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
4248 adapter
->stats
.cexterr
;
4249 netdev
->stats
.rx_length_errors
= adapter
->stats
.ruc
+
4251 netdev
->stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
4252 netdev
->stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
4253 netdev
->stats
.rx_missed_errors
= adapter
->stats
.mpc
;
4256 netdev
->stats
.tx_errors
= adapter
->stats
.ecol
+
4257 adapter
->stats
.latecol
;
4258 netdev
->stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
4259 netdev
->stats
.tx_window_errors
= adapter
->stats
.latecol
;
4260 netdev
->stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
4262 /* Tx Dropped needs to be maintained elsewhere */
4264 /* Management Stats */
4265 adapter
->stats
.mgptc
+= er32(MGTPTC
);
4266 adapter
->stats
.mgprc
+= er32(MGTPRC
);
4267 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
4271 * e1000_phy_read_status - Update the PHY register status snapshot
4272 * @adapter: board private structure
4274 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
4276 struct e1000_hw
*hw
= &adapter
->hw
;
4277 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
4279 if ((er32(STATUS
) & E1000_STATUS_LU
) &&
4280 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
4283 ret_val
= e1e_rphy(hw
, PHY_CONTROL
, &phy
->bmcr
);
4284 ret_val
|= e1e_rphy(hw
, PHY_STATUS
, &phy
->bmsr
);
4285 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_ADV
, &phy
->advertise
);
4286 ret_val
|= e1e_rphy(hw
, PHY_LP_ABILITY
, &phy
->lpa
);
4287 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_EXP
, &phy
->expansion
);
4288 ret_val
|= e1e_rphy(hw
, PHY_1000T_CTRL
, &phy
->ctrl1000
);
4289 ret_val
|= e1e_rphy(hw
, PHY_1000T_STATUS
, &phy
->stat1000
);
4290 ret_val
|= e1e_rphy(hw
, PHY_EXT_STATUS
, &phy
->estatus
);
4292 e_warn("Error reading PHY register\n");
4295 * Do not read PHY registers if link is not up
4296 * Set values to typical power-on defaults
4298 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
4299 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
4300 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
4302 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
4303 ADVERTISE_ALL
| ADVERTISE_CSMA
);
4305 phy
->expansion
= EXPANSION_ENABLENPAGE
;
4306 phy
->ctrl1000
= ADVERTISE_1000FULL
;
4308 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
4312 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
4314 struct e1000_hw
*hw
= &adapter
->hw
;
4315 u32 ctrl
= er32(CTRL
);
4317 /* Link status message must follow this format for user tools */
4318 printk(KERN_INFO
"e1000e: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n",
4319 adapter
->netdev
->name
,
4320 adapter
->link_speed
,
4321 adapter
->link_duplex
== FULL_DUPLEX
? "Full" : "Half",
4322 (ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
) ? "Rx/Tx" :
4323 (ctrl
& E1000_CTRL_RFCE
) ? "Rx" :
4324 (ctrl
& E1000_CTRL_TFCE
) ? "Tx" : "None");
4327 static bool e1000e_has_link(struct e1000_adapter
*adapter
)
4329 struct e1000_hw
*hw
= &adapter
->hw
;
4330 bool link_active
= false;
4334 * get_link_status is set on LSC (link status) interrupt or
4335 * Rx sequence error interrupt. get_link_status will stay
4336 * false until the check_for_link establishes link
4337 * for copper adapters ONLY
4339 switch (hw
->phy
.media_type
) {
4340 case e1000_media_type_copper
:
4341 if (hw
->mac
.get_link_status
) {
4342 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4343 link_active
= !hw
->mac
.get_link_status
;
4348 case e1000_media_type_fiber
:
4349 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4350 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
4352 case e1000_media_type_internal_serdes
:
4353 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4354 link_active
= adapter
->hw
.mac
.serdes_has_link
;
4357 case e1000_media_type_unknown
:
4361 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
4362 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
4363 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
4364 e_info("Gigabit has been disabled, downgrading speed\n");
4370 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
4372 /* make sure the receive unit is started */
4373 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
4374 (adapter
->flags
& FLAG_RX_RESTART_NOW
)) {
4375 struct e1000_hw
*hw
= &adapter
->hw
;
4376 u32 rctl
= er32(RCTL
);
4377 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
4378 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
4382 static void e1000e_check_82574_phy_workaround(struct e1000_adapter
*adapter
)
4384 struct e1000_hw
*hw
= &adapter
->hw
;
4387 * With 82574 controllers, PHY needs to be checked periodically
4388 * for hung state and reset, if two calls return true
4390 if (e1000_check_phy_82574(hw
))
4391 adapter
->phy_hang_count
++;
4393 adapter
->phy_hang_count
= 0;
4395 if (adapter
->phy_hang_count
> 1) {
4396 adapter
->phy_hang_count
= 0;
4397 schedule_work(&adapter
->reset_task
);
4402 * e1000_watchdog - Timer Call-back
4403 * @data: pointer to adapter cast into an unsigned long
4405 static void e1000_watchdog(unsigned long data
)
4407 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
4409 /* Do the rest outside of interrupt context */
4410 schedule_work(&adapter
->watchdog_task
);
4412 /* TODO: make this use queue_delayed_work() */
4415 static void e1000_watchdog_task(struct work_struct
*work
)
4417 struct e1000_adapter
*adapter
= container_of(work
,
4418 struct e1000_adapter
, watchdog_task
);
4419 struct net_device
*netdev
= adapter
->netdev
;
4420 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
4421 struct e1000_phy_info
*phy
= &adapter
->hw
.phy
;
4422 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4423 struct e1000_hw
*hw
= &adapter
->hw
;
4426 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4429 link
= e1000e_has_link(adapter
);
4430 if ((netif_carrier_ok(netdev
)) && link
) {
4431 /* Cancel scheduled suspend requests. */
4432 pm_runtime_resume(netdev
->dev
.parent
);
4434 e1000e_enable_receives(adapter
);
4438 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
4439 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
4440 e1000_update_mng_vlan(adapter
);
4443 if (!netif_carrier_ok(netdev
)) {
4446 /* Cancel scheduled suspend requests. */
4447 pm_runtime_resume(netdev
->dev
.parent
);
4449 /* update snapshot of PHY registers on LSC */
4450 e1000_phy_read_status(adapter
);
4451 mac
->ops
.get_link_up_info(&adapter
->hw
,
4452 &adapter
->link_speed
,
4453 &adapter
->link_duplex
);
4454 e1000_print_link_info(adapter
);
4456 * On supported PHYs, check for duplex mismatch only
4457 * if link has autonegotiated at 10/100 half
4459 if ((hw
->phy
.type
== e1000_phy_igp_3
||
4460 hw
->phy
.type
== e1000_phy_bm
) &&
4461 (hw
->mac
.autoneg
== true) &&
4462 (adapter
->link_speed
== SPEED_10
||
4463 adapter
->link_speed
== SPEED_100
) &&
4464 (adapter
->link_duplex
== HALF_DUPLEX
)) {
4467 e1e_rphy(hw
, PHY_AUTONEG_EXP
, &autoneg_exp
);
4469 if (!(autoneg_exp
& NWAY_ER_LP_NWAY_CAPS
))
4470 e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n");
4473 /* adjust timeout factor according to speed/duplex */
4474 adapter
->tx_timeout_factor
= 1;
4475 switch (adapter
->link_speed
) {
4478 adapter
->tx_timeout_factor
= 16;
4482 adapter
->tx_timeout_factor
= 10;
4487 * workaround: re-program speed mode bit after
4490 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
4493 tarc0
= er32(TARC(0));
4494 tarc0
&= ~SPEED_MODE_BIT
;
4495 ew32(TARC(0), tarc0
);
4499 * disable TSO for pcie and 10/100 speeds, to avoid
4500 * some hardware issues
4502 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
4503 switch (adapter
->link_speed
) {
4506 e_info("10/100 speed: disabling TSO\n");
4507 netdev
->features
&= ~NETIF_F_TSO
;
4508 netdev
->features
&= ~NETIF_F_TSO6
;
4511 netdev
->features
|= NETIF_F_TSO
;
4512 netdev
->features
|= NETIF_F_TSO6
;
4521 * enable transmits in the hardware, need to do this
4522 * after setting TARC(0)
4525 tctl
|= E1000_TCTL_EN
;
4529 * Perform any post-link-up configuration before
4530 * reporting link up.
4532 if (phy
->ops
.cfg_on_link_up
)
4533 phy
->ops
.cfg_on_link_up(hw
);
4535 netif_carrier_on(netdev
);
4537 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4538 mod_timer(&adapter
->phy_info_timer
,
4539 round_jiffies(jiffies
+ 2 * HZ
));
4542 if (netif_carrier_ok(netdev
)) {
4543 adapter
->link_speed
= 0;
4544 adapter
->link_duplex
= 0;
4545 /* Link status message must follow this format */
4546 printk(KERN_INFO
"e1000e: %s NIC Link is Down\n",
4547 adapter
->netdev
->name
);
4548 netif_carrier_off(netdev
);
4549 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4550 mod_timer(&adapter
->phy_info_timer
,
4551 round_jiffies(jiffies
+ 2 * HZ
));
4553 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
4554 schedule_work(&adapter
->reset_task
);
4556 pm_schedule_suspend(netdev
->dev
.parent
,
4562 spin_lock(&adapter
->stats64_lock
);
4563 e1000e_update_stats(adapter
);
4565 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
4566 adapter
->tpt_old
= adapter
->stats
.tpt
;
4567 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
4568 adapter
->colc_old
= adapter
->stats
.colc
;
4570 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
4571 adapter
->gorc_old
= adapter
->stats
.gorc
;
4572 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
4573 adapter
->gotc_old
= adapter
->stats
.gotc
;
4574 spin_unlock(&adapter
->stats64_lock
);
4576 e1000e_update_adaptive(&adapter
->hw
);
4578 if (!netif_carrier_ok(netdev
) &&
4579 (e1000_desc_unused(tx_ring
) + 1 < tx_ring
->count
)) {
4581 * We've lost link, so the controller stops DMA,
4582 * but we've got queued Tx work that's never going
4583 * to get done, so reset controller to flush Tx.
4584 * (Do the reset outside of interrupt context).
4586 schedule_work(&adapter
->reset_task
);
4587 /* return immediately since reset is imminent */
4591 /* Simple mode for Interrupt Throttle Rate (ITR) */
4592 if (adapter
->itr_setting
== 4) {
4594 * Symmetric Tx/Rx gets a reduced ITR=2000;
4595 * Total asymmetrical Tx or Rx gets ITR=8000;
4596 * everyone else is between 2000-8000.
4598 u32 goc
= (adapter
->gotc
+ adapter
->gorc
) / 10000;
4599 u32 dif
= (adapter
->gotc
> adapter
->gorc
?
4600 adapter
->gotc
- adapter
->gorc
:
4601 adapter
->gorc
- adapter
->gotc
) / 10000;
4602 u32 itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
4604 ew32(ITR
, 1000000000 / (itr
* 256));
4607 /* Cause software interrupt to ensure Rx ring is cleaned */
4608 if (adapter
->msix_entries
)
4609 ew32(ICS
, adapter
->rx_ring
->ims_val
);
4611 ew32(ICS
, E1000_ICS_RXDMT0
);
4613 /* flush pending descriptors to memory before detecting Tx hang */
4614 e1000e_flush_descriptors(adapter
);
4616 /* Force detection of hung controller every watchdog period */
4617 adapter
->detect_tx_hung
= true;
4620 * With 82571 controllers, LAA may be overwritten due to controller
4621 * reset from the other port. Set the appropriate LAA in RAR[0]
4623 if (e1000e_get_laa_state_82571(hw
))
4624 e1000e_rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
4626 if (adapter
->flags2
& FLAG2_CHECK_PHY_HANG
)
4627 e1000e_check_82574_phy_workaround(adapter
);
4629 /* Reset the timer */
4630 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4631 mod_timer(&adapter
->watchdog_timer
,
4632 round_jiffies(jiffies
+ 2 * HZ
));
4635 #define E1000_TX_FLAGS_CSUM 0x00000001
4636 #define E1000_TX_FLAGS_VLAN 0x00000002
4637 #define E1000_TX_FLAGS_TSO 0x00000004
4638 #define E1000_TX_FLAGS_IPV4 0x00000008
4639 #define E1000_TX_FLAGS_NO_FCS 0x00000010
4640 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
4641 #define E1000_TX_FLAGS_VLAN_SHIFT 16
4643 static int e1000_tso(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
)
4645 struct e1000_context_desc
*context_desc
;
4646 struct e1000_buffer
*buffer_info
;
4649 u16 ipcse
= 0, tucse
, mss
;
4650 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
4652 if (!skb_is_gso(skb
))
4655 if (skb_header_cloned(skb
)) {
4656 int err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
4662 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
4663 mss
= skb_shinfo(skb
)->gso_size
;
4664 if (skb
->protocol
== htons(ETH_P_IP
)) {
4665 struct iphdr
*iph
= ip_hdr(skb
);
4668 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
, iph
->daddr
,
4670 cmd_length
= E1000_TXD_CMD_IP
;
4671 ipcse
= skb_transport_offset(skb
) - 1;
4672 } else if (skb_is_gso_v6(skb
)) {
4673 ipv6_hdr(skb
)->payload_len
= 0;
4674 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
4675 &ipv6_hdr(skb
)->daddr
,
4679 ipcss
= skb_network_offset(skb
);
4680 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
4681 tucss
= skb_transport_offset(skb
);
4682 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
4685 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
4686 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
4688 i
= tx_ring
->next_to_use
;
4689 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
4690 buffer_info
= &tx_ring
->buffer_info
[i
];
4692 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
4693 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
4694 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
4695 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
4696 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
4697 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
4698 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
4699 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
4700 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
4702 buffer_info
->time_stamp
= jiffies
;
4703 buffer_info
->next_to_watch
= i
;
4706 if (i
== tx_ring
->count
)
4708 tx_ring
->next_to_use
= i
;
4713 static bool e1000_tx_csum(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
)
4715 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
4716 struct e1000_context_desc
*context_desc
;
4717 struct e1000_buffer
*buffer_info
;
4720 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
4723 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
4726 if (skb
->protocol
== cpu_to_be16(ETH_P_8021Q
))
4727 protocol
= vlan_eth_hdr(skb
)->h_vlan_encapsulated_proto
;
4729 protocol
= skb
->protocol
;
4732 case cpu_to_be16(ETH_P_IP
):
4733 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
4734 cmd_len
|= E1000_TXD_CMD_TCP
;
4736 case cpu_to_be16(ETH_P_IPV6
):
4737 /* XXX not handling all IPV6 headers */
4738 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
4739 cmd_len
|= E1000_TXD_CMD_TCP
;
4742 if (unlikely(net_ratelimit()))
4743 e_warn("checksum_partial proto=%x!\n",
4744 be16_to_cpu(protocol
));
4748 css
= skb_checksum_start_offset(skb
);
4750 i
= tx_ring
->next_to_use
;
4751 buffer_info
= &tx_ring
->buffer_info
[i
];
4752 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
4754 context_desc
->lower_setup
.ip_config
= 0;
4755 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
4756 context_desc
->upper_setup
.tcp_fields
.tucso
=
4757 css
+ skb
->csum_offset
;
4758 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
4759 context_desc
->tcp_seg_setup
.data
= 0;
4760 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
4762 buffer_info
->time_stamp
= jiffies
;
4763 buffer_info
->next_to_watch
= i
;
4766 if (i
== tx_ring
->count
)
4768 tx_ring
->next_to_use
= i
;
4773 #define E1000_MAX_PER_TXD 8192
4774 #define E1000_MAX_TXD_PWR 12
4776 static int e1000_tx_map(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
,
4777 unsigned int first
, unsigned int max_per_txd
,
4778 unsigned int nr_frags
, unsigned int mss
)
4780 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
4781 struct pci_dev
*pdev
= adapter
->pdev
;
4782 struct e1000_buffer
*buffer_info
;
4783 unsigned int len
= skb_headlen(skb
);
4784 unsigned int offset
= 0, size
, count
= 0, i
;
4785 unsigned int f
, bytecount
, segs
;
4787 i
= tx_ring
->next_to_use
;
4790 buffer_info
= &tx_ring
->buffer_info
[i
];
4791 size
= min(len
, max_per_txd
);
4793 buffer_info
->length
= size
;
4794 buffer_info
->time_stamp
= jiffies
;
4795 buffer_info
->next_to_watch
= i
;
4796 buffer_info
->dma
= dma_map_single(&pdev
->dev
,
4798 size
, DMA_TO_DEVICE
);
4799 buffer_info
->mapped_as_page
= false;
4800 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
4809 if (i
== tx_ring
->count
)
4814 for (f
= 0; f
< nr_frags
; f
++) {
4815 const struct skb_frag_struct
*frag
;
4817 frag
= &skb_shinfo(skb
)->frags
[f
];
4818 len
= skb_frag_size(frag
);
4823 if (i
== tx_ring
->count
)
4826 buffer_info
= &tx_ring
->buffer_info
[i
];
4827 size
= min(len
, max_per_txd
);
4829 buffer_info
->length
= size
;
4830 buffer_info
->time_stamp
= jiffies
;
4831 buffer_info
->next_to_watch
= i
;
4832 buffer_info
->dma
= skb_frag_dma_map(&pdev
->dev
, frag
,
4833 offset
, size
, DMA_TO_DEVICE
);
4834 buffer_info
->mapped_as_page
= true;
4835 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
4844 segs
= skb_shinfo(skb
)->gso_segs
? : 1;
4845 /* multiply data chunks by size of headers */
4846 bytecount
= ((segs
- 1) * skb_headlen(skb
)) + skb
->len
;
4848 tx_ring
->buffer_info
[i
].skb
= skb
;
4849 tx_ring
->buffer_info
[i
].segs
= segs
;
4850 tx_ring
->buffer_info
[i
].bytecount
= bytecount
;
4851 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
4856 dev_err(&pdev
->dev
, "Tx DMA map failed\n");
4857 buffer_info
->dma
= 0;
4863 i
+= tx_ring
->count
;
4865 buffer_info
= &tx_ring
->buffer_info
[i
];
4866 e1000_put_txbuf(tx_ring
, buffer_info
);
4872 static void e1000_tx_queue(struct e1000_ring
*tx_ring
, int tx_flags
, int count
)
4874 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
4875 struct e1000_tx_desc
*tx_desc
= NULL
;
4876 struct e1000_buffer
*buffer_info
;
4877 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
4880 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
4881 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
4883 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
4885 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
4886 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
4889 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
4890 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
4891 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
4894 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
4895 txd_lower
|= E1000_TXD_CMD_VLE
;
4896 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
4899 if (unlikely(tx_flags
& E1000_TX_FLAGS_NO_FCS
))
4900 txd_lower
&= ~(E1000_TXD_CMD_IFCS
);
4902 i
= tx_ring
->next_to_use
;
4905 buffer_info
= &tx_ring
->buffer_info
[i
];
4906 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
4907 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4908 tx_desc
->lower
.data
=
4909 cpu_to_le32(txd_lower
| buffer_info
->length
);
4910 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
4913 if (i
== tx_ring
->count
)
4915 } while (--count
> 0);
4917 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
4919 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */
4920 if (unlikely(tx_flags
& E1000_TX_FLAGS_NO_FCS
))
4921 tx_desc
->lower
.data
&= ~(cpu_to_le32(E1000_TXD_CMD_IFCS
));
4924 * Force memory writes to complete before letting h/w
4925 * know there are new descriptors to fetch. (Only
4926 * applicable for weak-ordered memory model archs,
4931 tx_ring
->next_to_use
= i
;
4933 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
4934 e1000e_update_tdt_wa(tx_ring
, i
);
4936 writel(i
, tx_ring
->tail
);
4939 * we need this if more than one processor can write to our tail
4940 * at a time, it synchronizes IO on IA64/Altix systems
4945 #define MINIMUM_DHCP_PACKET_SIZE 282
4946 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
4947 struct sk_buff
*skb
)
4949 struct e1000_hw
*hw
= &adapter
->hw
;
4952 if (vlan_tx_tag_present(skb
)) {
4953 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
4954 (adapter
->hw
.mng_cookie
.status
&
4955 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
4959 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
4962 if (((struct ethhdr
*) skb
->data
)->h_proto
!= htons(ETH_P_IP
))
4966 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+14);
4969 if (ip
->protocol
!= IPPROTO_UDP
)
4972 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
4973 if (ntohs(udp
->dest
) != 67)
4976 offset
= (u8
*)udp
+ 8 - skb
->data
;
4977 length
= skb
->len
- offset
;
4978 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
4984 static int __e1000_maybe_stop_tx(struct e1000_ring
*tx_ring
, int size
)
4986 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
4988 netif_stop_queue(adapter
->netdev
);
4990 * Herbert's original patch had:
4991 * smp_mb__after_netif_stop_queue();
4992 * but since that doesn't exist yet, just open code it.
4997 * We need to check again in a case another CPU has just
4998 * made room available.
5000 if (e1000_desc_unused(tx_ring
) < size
)
5004 netif_start_queue(adapter
->netdev
);
5005 ++adapter
->restart_queue
;
5009 static int e1000_maybe_stop_tx(struct e1000_ring
*tx_ring
, int size
)
5011 if (e1000_desc_unused(tx_ring
) >= size
)
5013 return __e1000_maybe_stop_tx(tx_ring
, size
);
5016 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1)
5017 static netdev_tx_t
e1000_xmit_frame(struct sk_buff
*skb
,
5018 struct net_device
*netdev
)
5020 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5021 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
5023 unsigned int max_per_txd
= E1000_MAX_PER_TXD
;
5024 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
5025 unsigned int tx_flags
= 0;
5026 unsigned int len
= skb_headlen(skb
);
5027 unsigned int nr_frags
;
5033 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
5034 dev_kfree_skb_any(skb
);
5035 return NETDEV_TX_OK
;
5038 if (skb
->len
<= 0) {
5039 dev_kfree_skb_any(skb
);
5040 return NETDEV_TX_OK
;
5043 mss
= skb_shinfo(skb
)->gso_size
;
5045 * The controller does a simple calculation to
5046 * make sure there is enough room in the FIFO before
5047 * initiating the DMA for each buffer. The calc is:
5048 * 4 = ceil(buffer len/mss). To make sure we don't
5049 * overrun the FIFO, adjust the max buffer len if mss
5054 max_per_txd
= min(mss
<< 2, max_per_txd
);
5055 max_txd_pwr
= fls(max_per_txd
) - 1;
5058 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
5059 * points to just header, pull a few bytes of payload from
5060 * frags into skb->data
5062 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
5064 * we do this workaround for ES2LAN, but it is un-necessary,
5065 * avoiding it could save a lot of cycles
5067 if (skb
->data_len
&& (hdr_len
== len
)) {
5068 unsigned int pull_size
;
5070 pull_size
= min_t(unsigned int, 4, skb
->data_len
);
5071 if (!__pskb_pull_tail(skb
, pull_size
)) {
5072 e_err("__pskb_pull_tail failed.\n");
5073 dev_kfree_skb_any(skb
);
5074 return NETDEV_TX_OK
;
5076 len
= skb_headlen(skb
);
5080 /* reserve a descriptor for the offload context */
5081 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
5085 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
5087 nr_frags
= skb_shinfo(skb
)->nr_frags
;
5088 for (f
= 0; f
< nr_frags
; f
++)
5089 count
+= TXD_USE_COUNT(skb_frag_size(&skb_shinfo(skb
)->frags
[f
]),
5092 if (adapter
->hw
.mac
.tx_pkt_filtering
)
5093 e1000_transfer_dhcp_info(adapter
, skb
);
5096 * need: count + 2 desc gap to keep tail from touching
5097 * head, otherwise try next time
5099 if (e1000_maybe_stop_tx(tx_ring
, count
+ 2))
5100 return NETDEV_TX_BUSY
;
5102 if (vlan_tx_tag_present(skb
)) {
5103 tx_flags
|= E1000_TX_FLAGS_VLAN
;
5104 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
5107 first
= tx_ring
->next_to_use
;
5109 tso
= e1000_tso(tx_ring
, skb
);
5111 dev_kfree_skb_any(skb
);
5112 return NETDEV_TX_OK
;
5116 tx_flags
|= E1000_TX_FLAGS_TSO
;
5117 else if (e1000_tx_csum(tx_ring
, skb
))
5118 tx_flags
|= E1000_TX_FLAGS_CSUM
;
5121 * Old method was to assume IPv4 packet by default if TSO was enabled.
5122 * 82571 hardware supports TSO capabilities for IPv6 as well...
5123 * no longer assume, we must.
5125 if (skb
->protocol
== htons(ETH_P_IP
))
5126 tx_flags
|= E1000_TX_FLAGS_IPV4
;
5128 if (unlikely(skb
->no_fcs
))
5129 tx_flags
|= E1000_TX_FLAGS_NO_FCS
;
5131 /* if count is 0 then mapping error has occurred */
5132 count
= e1000_tx_map(tx_ring
, skb
, first
, max_per_txd
, nr_frags
, mss
);
5134 netdev_sent_queue(netdev
, skb
->len
);
5135 e1000_tx_queue(tx_ring
, tx_flags
, count
);
5136 /* Make sure there is space in the ring for the next send. */
5137 e1000_maybe_stop_tx(tx_ring
, MAX_SKB_FRAGS
+ 2);
5140 dev_kfree_skb_any(skb
);
5141 tx_ring
->buffer_info
[first
].time_stamp
= 0;
5142 tx_ring
->next_to_use
= first
;
5145 return NETDEV_TX_OK
;
5149 * e1000_tx_timeout - Respond to a Tx Hang
5150 * @netdev: network interface device structure
5152 static void e1000_tx_timeout(struct net_device
*netdev
)
5154 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5156 /* Do the reset outside of interrupt context */
5157 adapter
->tx_timeout_count
++;
5158 schedule_work(&adapter
->reset_task
);
5161 static void e1000_reset_task(struct work_struct
*work
)
5163 struct e1000_adapter
*adapter
;
5164 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
5166 /* don't run the task if already down */
5167 if (test_bit(__E1000_DOWN
, &adapter
->state
))
5170 if (!((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
5171 (adapter
->flags
& FLAG_RX_RESTART_NOW
))) {
5172 e1000e_dump(adapter
);
5173 e_err("Reset adapter\n");
5175 e1000e_reinit_locked(adapter
);
5179 * e1000_get_stats64 - Get System Network Statistics
5180 * @netdev: network interface device structure
5181 * @stats: rtnl_link_stats64 pointer
5183 * Returns the address of the device statistics structure.
5185 struct rtnl_link_stats64
*e1000e_get_stats64(struct net_device
*netdev
,
5186 struct rtnl_link_stats64
*stats
)
5188 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5190 memset(stats
, 0, sizeof(struct rtnl_link_stats64
));
5191 spin_lock(&adapter
->stats64_lock
);
5192 e1000e_update_stats(adapter
);
5193 /* Fill out the OS statistics structure */
5194 stats
->rx_bytes
= adapter
->stats
.gorc
;
5195 stats
->rx_packets
= adapter
->stats
.gprc
;
5196 stats
->tx_bytes
= adapter
->stats
.gotc
;
5197 stats
->tx_packets
= adapter
->stats
.gptc
;
5198 stats
->multicast
= adapter
->stats
.mprc
;
5199 stats
->collisions
= adapter
->stats
.colc
;
5204 * RLEC on some newer hardware can be incorrect so build
5205 * our own version based on RUC and ROC
5207 stats
->rx_errors
= adapter
->stats
.rxerrc
+
5208 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
5209 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
5210 adapter
->stats
.cexterr
;
5211 stats
->rx_length_errors
= adapter
->stats
.ruc
+
5213 stats
->rx_crc_errors
= adapter
->stats
.crcerrs
;
5214 stats
->rx_frame_errors
= adapter
->stats
.algnerrc
;
5215 stats
->rx_missed_errors
= adapter
->stats
.mpc
;
5218 stats
->tx_errors
= adapter
->stats
.ecol
+
5219 adapter
->stats
.latecol
;
5220 stats
->tx_aborted_errors
= adapter
->stats
.ecol
;
5221 stats
->tx_window_errors
= adapter
->stats
.latecol
;
5222 stats
->tx_carrier_errors
= adapter
->stats
.tncrs
;
5224 /* Tx Dropped needs to be maintained elsewhere */
5226 spin_unlock(&adapter
->stats64_lock
);
5231 * e1000_change_mtu - Change the Maximum Transfer Unit
5232 * @netdev: network interface device structure
5233 * @new_mtu: new value for maximum frame size
5235 * Returns 0 on success, negative on failure
5237 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
5239 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5240 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
5242 /* Jumbo frame support */
5243 if (max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
5244 if (!(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
5245 e_err("Jumbo Frames not supported.\n");
5250 * IP payload checksum (enabled with jumbos/packet-split when
5251 * Rx checksum is enabled) and generation of RSS hash is
5252 * mutually exclusive in the hardware.
5254 if ((netdev
->features
& NETIF_F_RXCSUM
) &&
5255 (netdev
->features
& NETIF_F_RXHASH
)) {
5256 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");
5261 /* Supported frame sizes */
5262 if ((new_mtu
< ETH_ZLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
) ||
5263 (max_frame
> adapter
->max_hw_frame_size
)) {
5264 e_err("Unsupported MTU setting\n");
5268 /* Jumbo frame workaround on 82579 requires CRC be stripped */
5269 if ((adapter
->hw
.mac
.type
== e1000_pch2lan
) &&
5270 !(adapter
->flags2
& FLAG2_CRC_STRIPPING
) &&
5271 (new_mtu
> ETH_DATA_LEN
)) {
5272 e_err("Jumbo Frames not supported on 82579 when CRC stripping is disabled.\n");
5276 /* 82573 Errata 17 */
5277 if (((adapter
->hw
.mac
.type
== e1000_82573
) ||
5278 (adapter
->hw
.mac
.type
== e1000_82574
)) &&
5279 (max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
)) {
5280 adapter
->flags2
|= FLAG2_DISABLE_ASPM_L1
;
5281 e1000e_disable_aspm(adapter
->pdev
, PCIE_LINK_STATE_L1
);
5284 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
5285 usleep_range(1000, 2000);
5286 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
5287 adapter
->max_frame_size
= max_frame
;
5288 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
5289 netdev
->mtu
= new_mtu
;
5290 if (netif_running(netdev
))
5291 e1000e_down(adapter
);
5294 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
5295 * means we reserve 2 more, this pushes us to allocate from the next
5297 * i.e. RXBUFFER_2048 --> size-4096 slab
5298 * However with the new *_jumbo_rx* routines, jumbo receives will use
5302 if (max_frame
<= 2048)
5303 adapter
->rx_buffer_len
= 2048;
5305 adapter
->rx_buffer_len
= 4096;
5307 /* adjust allocation if LPE protects us, and we aren't using SBP */
5308 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
5309 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
5310 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
5313 if (netif_running(netdev
))
5316 e1000e_reset(adapter
);
5318 clear_bit(__E1000_RESETTING
, &adapter
->state
);
5323 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
5326 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5327 struct mii_ioctl_data
*data
= if_mii(ifr
);
5329 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
5334 data
->phy_id
= adapter
->hw
.phy
.addr
;
5337 e1000_phy_read_status(adapter
);
5339 switch (data
->reg_num
& 0x1F) {
5341 data
->val_out
= adapter
->phy_regs
.bmcr
;
5344 data
->val_out
= adapter
->phy_regs
.bmsr
;
5347 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
5350 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
5353 data
->val_out
= adapter
->phy_regs
.advertise
;
5356 data
->val_out
= adapter
->phy_regs
.lpa
;
5359 data
->val_out
= adapter
->phy_regs
.expansion
;
5362 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
5365 data
->val_out
= adapter
->phy_regs
.stat1000
;
5368 data
->val_out
= adapter
->phy_regs
.estatus
;
5381 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
5387 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
5393 static int e1000_init_phy_wakeup(struct e1000_adapter
*adapter
, u32 wufc
)
5395 struct e1000_hw
*hw
= &adapter
->hw
;
5397 u16 phy_reg
, wuc_enable
;
5400 /* copy MAC RARs to PHY RARs */
5401 e1000_copy_rx_addrs_to_phy_ich8lan(hw
);
5403 retval
= hw
->phy
.ops
.acquire(hw
);
5405 e_err("Could not acquire PHY\n");
5409 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */
5410 retval
= e1000_enable_phy_wakeup_reg_access_bm(hw
, &wuc_enable
);
5414 /* copy MAC MTA to PHY MTA - only needed for pchlan */
5415 for (i
= 0; i
< adapter
->hw
.mac
.mta_reg_count
; i
++) {
5416 mac_reg
= E1000_READ_REG_ARRAY(hw
, E1000_MTA
, i
);
5417 hw
->phy
.ops
.write_reg_page(hw
, BM_MTA(i
),
5418 (u16
)(mac_reg
& 0xFFFF));
5419 hw
->phy
.ops
.write_reg_page(hw
, BM_MTA(i
) + 1,
5420 (u16
)((mac_reg
>> 16) & 0xFFFF));
5423 /* configure PHY Rx Control register */
5424 hw
->phy
.ops
.read_reg_page(&adapter
->hw
, BM_RCTL
, &phy_reg
);
5425 mac_reg
= er32(RCTL
);
5426 if (mac_reg
& E1000_RCTL_UPE
)
5427 phy_reg
|= BM_RCTL_UPE
;
5428 if (mac_reg
& E1000_RCTL_MPE
)
5429 phy_reg
|= BM_RCTL_MPE
;
5430 phy_reg
&= ~(BM_RCTL_MO_MASK
);
5431 if (mac_reg
& E1000_RCTL_MO_3
)
5432 phy_reg
|= (((mac_reg
& E1000_RCTL_MO_3
) >> E1000_RCTL_MO_SHIFT
)
5433 << BM_RCTL_MO_SHIFT
);
5434 if (mac_reg
& E1000_RCTL_BAM
)
5435 phy_reg
|= BM_RCTL_BAM
;
5436 if (mac_reg
& E1000_RCTL_PMCF
)
5437 phy_reg
|= BM_RCTL_PMCF
;
5438 mac_reg
= er32(CTRL
);
5439 if (mac_reg
& E1000_CTRL_RFCE
)
5440 phy_reg
|= BM_RCTL_RFCE
;
5441 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_RCTL
, phy_reg
);
5443 /* enable PHY wakeup in MAC register */
5445 ew32(WUC
, E1000_WUC_PHY_WAKE
| E1000_WUC_PME_EN
);
5447 /* configure and enable PHY wakeup in PHY registers */
5448 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_WUFC
, wufc
);
5449 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_WUC
, E1000_WUC_PME_EN
);
5451 /* activate PHY wakeup */
5452 wuc_enable
|= BM_WUC_ENABLE_BIT
| BM_WUC_HOST_WU_BIT
;
5453 retval
= e1000_disable_phy_wakeup_reg_access_bm(hw
, &wuc_enable
);
5455 e_err("Could not set PHY Host Wakeup bit\n");
5457 hw
->phy
.ops
.release(hw
);
5462 static int __e1000_shutdown(struct pci_dev
*pdev
, bool *enable_wake
,
5465 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5466 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5467 struct e1000_hw
*hw
= &adapter
->hw
;
5468 u32 ctrl
, ctrl_ext
, rctl
, status
;
5469 /* Runtime suspend should only enable wakeup for link changes */
5470 u32 wufc
= runtime
? E1000_WUFC_LNKC
: adapter
->wol
;
5473 netif_device_detach(netdev
);
5475 if (netif_running(netdev
)) {
5476 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
5477 e1000e_down(adapter
);
5478 e1000_free_irq(adapter
);
5480 e1000e_reset_interrupt_capability(adapter
);
5482 retval
= pci_save_state(pdev
);
5486 status
= er32(STATUS
);
5487 if (status
& E1000_STATUS_LU
)
5488 wufc
&= ~E1000_WUFC_LNKC
;
5491 e1000_setup_rctl(adapter
);
5492 e1000e_set_rx_mode(netdev
);
5494 /* turn on all-multi mode if wake on multicast is enabled */
5495 if (wufc
& E1000_WUFC_MC
) {
5497 rctl
|= E1000_RCTL_MPE
;
5502 /* advertise wake from D3Cold */
5503 #define E1000_CTRL_ADVD3WUC 0x00100000
5504 /* phy power management enable */
5505 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5506 ctrl
|= E1000_CTRL_ADVD3WUC
;
5507 if (!(adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
))
5508 ctrl
|= E1000_CTRL_EN_PHY_PWR_MGMT
;
5511 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
5512 adapter
->hw
.phy
.media_type
==
5513 e1000_media_type_internal_serdes
) {
5514 /* keep the laser running in D3 */
5515 ctrl_ext
= er32(CTRL_EXT
);
5516 ctrl_ext
|= E1000_CTRL_EXT_SDP3_DATA
;
5517 ew32(CTRL_EXT
, ctrl_ext
);
5520 if (adapter
->flags
& FLAG_IS_ICH
)
5521 e1000_suspend_workarounds_ich8lan(&adapter
->hw
);
5523 /* Allow time for pending master requests to run */
5524 e1000e_disable_pcie_master(&adapter
->hw
);
5526 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
5527 /* enable wakeup by the PHY */
5528 retval
= e1000_init_phy_wakeup(adapter
, wufc
);
5532 /* enable wakeup by the MAC */
5534 ew32(WUC
, E1000_WUC_PME_EN
);
5541 *enable_wake
= !!wufc
;
5543 /* make sure adapter isn't asleep if manageability is enabled */
5544 if ((adapter
->flags
& FLAG_MNG_PT_ENABLED
) ||
5545 (hw
->mac
.ops
.check_mng_mode(hw
)))
5546 *enable_wake
= true;
5548 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
)
5549 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
5552 * Release control of h/w to f/w. If f/w is AMT enabled, this
5553 * would have already happened in close and is redundant.
5555 e1000e_release_hw_control(adapter
);
5557 pci_disable_device(pdev
);
5562 static void e1000_power_off(struct pci_dev
*pdev
, bool sleep
, bool wake
)
5564 if (sleep
&& wake
) {
5565 pci_prepare_to_sleep(pdev
);
5569 pci_wake_from_d3(pdev
, wake
);
5570 pci_set_power_state(pdev
, PCI_D3hot
);
5573 static void e1000_complete_shutdown(struct pci_dev
*pdev
, bool sleep
,
5576 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5577 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5580 * The pci-e switch on some quad port adapters will report a
5581 * correctable error when the MAC transitions from D0 to D3. To
5582 * prevent this we need to mask off the correctable errors on the
5583 * downstream port of the pci-e switch.
5585 if (adapter
->flags
& FLAG_IS_QUAD_PORT
) {
5586 struct pci_dev
*us_dev
= pdev
->bus
->self
;
5587 int pos
= pci_pcie_cap(us_dev
);
5590 pci_read_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, &devctl
);
5591 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
,
5592 (devctl
& ~PCI_EXP_DEVCTL_CERE
));
5594 e1000_power_off(pdev
, sleep
, wake
);
5596 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, devctl
);
5598 e1000_power_off(pdev
, sleep
, wake
);
5602 #ifdef CONFIG_PCIEASPM
5603 static void __e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5605 pci_disable_link_state_locked(pdev
, state
);
5608 static void __e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5614 * Both device and parent should have the same ASPM setting.
5615 * Disable ASPM in downstream component first and then upstream.
5617 pos
= pci_pcie_cap(pdev
);
5618 pci_read_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, ®16
);
5620 pci_write_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, reg16
);
5622 if (!pdev
->bus
->self
)
5625 pos
= pci_pcie_cap(pdev
->bus
->self
);
5626 pci_read_config_word(pdev
->bus
->self
, pos
+ PCI_EXP_LNKCTL
, ®16
);
5628 pci_write_config_word(pdev
->bus
->self
, pos
+ PCI_EXP_LNKCTL
, reg16
);
5631 static void e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
5633 dev_info(&pdev
->dev
, "Disabling ASPM %s %s\n",
5634 (state
& PCIE_LINK_STATE_L0S
) ? "L0s" : "",
5635 (state
& PCIE_LINK_STATE_L1
) ? "L1" : "");
5637 __e1000e_disable_aspm(pdev
, state
);
5641 static bool e1000e_pm_ready(struct e1000_adapter
*adapter
)
5643 return !!adapter
->tx_ring
->buffer_info
;
5646 static int __e1000_resume(struct pci_dev
*pdev
)
5648 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5649 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5650 struct e1000_hw
*hw
= &adapter
->hw
;
5651 u16 aspm_disable_flag
= 0;
5654 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
5655 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
5656 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5657 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
5658 if (aspm_disable_flag
)
5659 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
5661 pci_set_power_state(pdev
, PCI_D0
);
5662 pci_restore_state(pdev
);
5663 pci_save_state(pdev
);
5665 e1000e_set_interrupt_capability(adapter
);
5666 if (netif_running(netdev
)) {
5667 err
= e1000_request_irq(adapter
);
5672 if (hw
->mac
.type
== e1000_pch2lan
)
5673 e1000_resume_workarounds_pchlan(&adapter
->hw
);
5675 e1000e_power_up_phy(adapter
);
5677 /* report the system wakeup cause from S3/S4 */
5678 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
5681 e1e_rphy(&adapter
->hw
, BM_WUS
, &phy_data
);
5683 e_info("PHY Wakeup cause - %s\n",
5684 phy_data
& E1000_WUS_EX
? "Unicast Packet" :
5685 phy_data
& E1000_WUS_MC
? "Multicast Packet" :
5686 phy_data
& E1000_WUS_BC
? "Broadcast Packet" :
5687 phy_data
& E1000_WUS_MAG
? "Magic Packet" :
5688 phy_data
& E1000_WUS_LNKC
?
5689 "Link Status Change" : "other");
5691 e1e_wphy(&adapter
->hw
, BM_WUS
, ~0);
5693 u32 wus
= er32(WUS
);
5695 e_info("MAC Wakeup cause - %s\n",
5696 wus
& E1000_WUS_EX
? "Unicast Packet" :
5697 wus
& E1000_WUS_MC
? "Multicast Packet" :
5698 wus
& E1000_WUS_BC
? "Broadcast Packet" :
5699 wus
& E1000_WUS_MAG
? "Magic Packet" :
5700 wus
& E1000_WUS_LNKC
? "Link Status Change" :
5706 e1000e_reset(adapter
);
5708 e1000_init_manageability_pt(adapter
);
5710 if (netif_running(netdev
))
5713 netif_device_attach(netdev
);
5716 * If the controller has AMT, do not set DRV_LOAD until the interface
5717 * is up. For all other cases, let the f/w know that the h/w is now
5718 * under the control of the driver.
5720 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5721 e1000e_get_hw_control(adapter
);
5726 #ifdef CONFIG_PM_SLEEP
5727 static int e1000_suspend(struct device
*dev
)
5729 struct pci_dev
*pdev
= to_pci_dev(dev
);
5733 retval
= __e1000_shutdown(pdev
, &wake
, false);
5735 e1000_complete_shutdown(pdev
, true, wake
);
5740 static int e1000_resume(struct device
*dev
)
5742 struct pci_dev
*pdev
= to_pci_dev(dev
);
5743 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5744 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5746 if (e1000e_pm_ready(adapter
))
5747 adapter
->idle_check
= true;
5749 return __e1000_resume(pdev
);
5751 #endif /* CONFIG_PM_SLEEP */
5753 #ifdef CONFIG_PM_RUNTIME
5754 static int e1000_runtime_suspend(struct device
*dev
)
5756 struct pci_dev
*pdev
= to_pci_dev(dev
);
5757 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5758 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5760 if (e1000e_pm_ready(adapter
)) {
5763 __e1000_shutdown(pdev
, &wake
, true);
5769 static int e1000_idle(struct device
*dev
)
5771 struct pci_dev
*pdev
= to_pci_dev(dev
);
5772 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5773 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5775 if (!e1000e_pm_ready(adapter
))
5778 if (adapter
->idle_check
) {
5779 adapter
->idle_check
= false;
5780 if (!e1000e_has_link(adapter
))
5781 pm_schedule_suspend(dev
, MSEC_PER_SEC
);
5787 static int e1000_runtime_resume(struct device
*dev
)
5789 struct pci_dev
*pdev
= to_pci_dev(dev
);
5790 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5791 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5793 if (!e1000e_pm_ready(adapter
))
5796 adapter
->idle_check
= !dev
->power
.runtime_auto
;
5797 return __e1000_resume(pdev
);
5799 #endif /* CONFIG_PM_RUNTIME */
5800 #endif /* CONFIG_PM */
5802 static void e1000_shutdown(struct pci_dev
*pdev
)
5806 __e1000_shutdown(pdev
, &wake
, false);
5808 if (system_state
== SYSTEM_POWER_OFF
)
5809 e1000_complete_shutdown(pdev
, false, wake
);
5812 #ifdef CONFIG_NET_POLL_CONTROLLER
5814 static irqreturn_t
e1000_intr_msix(int irq
, void *data
)
5816 struct net_device
*netdev
= data
;
5817 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5819 if (adapter
->msix_entries
) {
5820 int vector
, msix_irq
;
5823 msix_irq
= adapter
->msix_entries
[vector
].vector
;
5824 disable_irq(msix_irq
);
5825 e1000_intr_msix_rx(msix_irq
, netdev
);
5826 enable_irq(msix_irq
);
5829 msix_irq
= adapter
->msix_entries
[vector
].vector
;
5830 disable_irq(msix_irq
);
5831 e1000_intr_msix_tx(msix_irq
, netdev
);
5832 enable_irq(msix_irq
);
5835 msix_irq
= adapter
->msix_entries
[vector
].vector
;
5836 disable_irq(msix_irq
);
5837 e1000_msix_other(msix_irq
, netdev
);
5838 enable_irq(msix_irq
);
5845 * Polling 'interrupt' - used by things like netconsole to send skbs
5846 * without having to re-enable interrupts. It's not called while
5847 * the interrupt routine is executing.
5849 static void e1000_netpoll(struct net_device
*netdev
)
5851 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5853 switch (adapter
->int_mode
) {
5854 case E1000E_INT_MODE_MSIX
:
5855 e1000_intr_msix(adapter
->pdev
->irq
, netdev
);
5857 case E1000E_INT_MODE_MSI
:
5858 disable_irq(adapter
->pdev
->irq
);
5859 e1000_intr_msi(adapter
->pdev
->irq
, netdev
);
5860 enable_irq(adapter
->pdev
->irq
);
5862 default: /* E1000E_INT_MODE_LEGACY */
5863 disable_irq(adapter
->pdev
->irq
);
5864 e1000_intr(adapter
->pdev
->irq
, netdev
);
5865 enable_irq(adapter
->pdev
->irq
);
5872 * e1000_io_error_detected - called when PCI error is detected
5873 * @pdev: Pointer to PCI device
5874 * @state: The current pci connection state
5876 * This function is called after a PCI bus error affecting
5877 * this device has been detected.
5879 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
5880 pci_channel_state_t state
)
5882 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5883 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5885 netif_device_detach(netdev
);
5887 if (state
== pci_channel_io_perm_failure
)
5888 return PCI_ERS_RESULT_DISCONNECT
;
5890 if (netif_running(netdev
))
5891 e1000e_down(adapter
);
5892 pci_disable_device(pdev
);
5894 /* Request a slot slot reset. */
5895 return PCI_ERS_RESULT_NEED_RESET
;
5899 * e1000_io_slot_reset - called after the pci bus has been reset.
5900 * @pdev: Pointer to PCI device
5902 * Restart the card from scratch, as if from a cold-boot. Implementation
5903 * resembles the first-half of the e1000_resume routine.
5905 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
5907 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5908 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5909 struct e1000_hw
*hw
= &adapter
->hw
;
5910 u16 aspm_disable_flag
= 0;
5912 pci_ers_result_t result
;
5914 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
5915 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
5916 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
5917 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
5918 if (aspm_disable_flag
)
5919 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
5921 err
= pci_enable_device_mem(pdev
);
5924 "Cannot re-enable PCI device after reset.\n");
5925 result
= PCI_ERS_RESULT_DISCONNECT
;
5927 pci_set_master(pdev
);
5928 pdev
->state_saved
= true;
5929 pci_restore_state(pdev
);
5931 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5932 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5934 e1000e_reset(adapter
);
5936 result
= PCI_ERS_RESULT_RECOVERED
;
5939 pci_cleanup_aer_uncorrect_error_status(pdev
);
5945 * e1000_io_resume - called when traffic can start flowing again.
5946 * @pdev: Pointer to PCI device
5948 * This callback is called when the error recovery driver tells us that
5949 * its OK to resume normal operation. Implementation resembles the
5950 * second-half of the e1000_resume routine.
5952 static void e1000_io_resume(struct pci_dev
*pdev
)
5954 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5955 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5957 e1000_init_manageability_pt(adapter
);
5959 if (netif_running(netdev
)) {
5960 if (e1000e_up(adapter
)) {
5962 "can't bring device back up after reset\n");
5967 netif_device_attach(netdev
);
5970 * If the controller has AMT, do not set DRV_LOAD until the interface
5971 * is up. For all other cases, let the f/w know that the h/w is now
5972 * under the control of the driver.
5974 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5975 e1000e_get_hw_control(adapter
);
5979 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
5981 struct e1000_hw
*hw
= &adapter
->hw
;
5982 struct net_device
*netdev
= adapter
->netdev
;
5984 u8 pba_str
[E1000_PBANUM_LENGTH
];
5986 /* print bus type/speed/width info */
5987 e_info("(PCI Express:2.5GT/s:%s) %pM\n",
5989 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
5993 e_info("Intel(R) PRO/%s Network Connection\n",
5994 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
5995 ret_val
= e1000_read_pba_string_generic(hw
, pba_str
,
5996 E1000_PBANUM_LENGTH
);
5998 strlcpy((char *)pba_str
, "Unknown", sizeof(pba_str
));
5999 e_info("MAC: %d, PHY: %d, PBA No: %s\n",
6000 hw
->mac
.type
, hw
->phy
.type
, pba_str
);
6003 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
6005 struct e1000_hw
*hw
= &adapter
->hw
;
6009 if (hw
->mac
.type
!= e1000_82573
)
6012 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
6014 if (!ret_val
&& (!(buf
& (1 << 0)))) {
6015 /* Deep Smart Power Down (DSPD) */
6016 dev_warn(&adapter
->pdev
->dev
,
6017 "Warning: detected DSPD enabled in EEPROM\n");
6021 static int e1000_set_features(struct net_device
*netdev
,
6022 netdev_features_t features
)
6024 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6025 netdev_features_t changed
= features
^ netdev
->features
;
6027 if (changed
& (NETIF_F_TSO
| NETIF_F_TSO6
))
6028 adapter
->flags
|= FLAG_TSO_FORCE
;
6030 if (!(changed
& (NETIF_F_HW_VLAN_RX
| NETIF_F_HW_VLAN_TX
|
6031 NETIF_F_RXCSUM
| NETIF_F_RXHASH
| NETIF_F_RXFCS
|
6036 * IP payload checksum (enabled with jumbos/packet-split when Rx
6037 * checksum is enabled) and generation of RSS hash is mutually
6038 * exclusive in the hardware.
6040 if (adapter
->rx_ps_pages
&&
6041 (features
& NETIF_F_RXCSUM
) && (features
& NETIF_F_RXHASH
)) {
6042 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");
6046 if (changed
& NETIF_F_RXFCS
) {
6047 if (features
& NETIF_F_RXFCS
) {
6048 adapter
->flags2
&= ~FLAG2_CRC_STRIPPING
;
6050 /* We need to take it back to defaults, which might mean
6051 * stripping is still disabled at the adapter level.
6053 if (adapter
->flags2
& FLAG2_DFLT_CRC_STRIPPING
)
6054 adapter
->flags2
|= FLAG2_CRC_STRIPPING
;
6056 adapter
->flags2
&= ~FLAG2_CRC_STRIPPING
;
6060 netdev
->features
= features
;
6062 if (netif_running(netdev
))
6063 e1000e_reinit_locked(adapter
);
6065 e1000e_reset(adapter
);
6070 static const struct net_device_ops e1000e_netdev_ops
= {
6071 .ndo_open
= e1000_open
,
6072 .ndo_stop
= e1000_close
,
6073 .ndo_start_xmit
= e1000_xmit_frame
,
6074 .ndo_get_stats64
= e1000e_get_stats64
,
6075 .ndo_set_rx_mode
= e1000e_set_rx_mode
,
6076 .ndo_set_mac_address
= e1000_set_mac
,
6077 .ndo_change_mtu
= e1000_change_mtu
,
6078 .ndo_do_ioctl
= e1000_ioctl
,
6079 .ndo_tx_timeout
= e1000_tx_timeout
,
6080 .ndo_validate_addr
= eth_validate_addr
,
6082 .ndo_vlan_rx_add_vid
= e1000_vlan_rx_add_vid
,
6083 .ndo_vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
,
6084 #ifdef CONFIG_NET_POLL_CONTROLLER
6085 .ndo_poll_controller
= e1000_netpoll
,
6087 .ndo_set_features
= e1000_set_features
,
6091 * e1000_probe - Device Initialization Routine
6092 * @pdev: PCI device information struct
6093 * @ent: entry in e1000_pci_tbl
6095 * Returns 0 on success, negative on failure
6097 * e1000_probe initializes an adapter identified by a pci_dev structure.
6098 * The OS initialization, configuring of the adapter private structure,
6099 * and a hardware reset occur.
6101 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
6102 const struct pci_device_id
*ent
)
6104 struct net_device
*netdev
;
6105 struct e1000_adapter
*adapter
;
6106 struct e1000_hw
*hw
;
6107 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
6108 resource_size_t mmio_start
, mmio_len
;
6109 resource_size_t flash_start
, flash_len
;
6110 static int cards_found
;
6111 u16 aspm_disable_flag
= 0;
6112 int i
, err
, pci_using_dac
;
6113 u16 eeprom_data
= 0;
6114 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
6116 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
6117 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
6118 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L1
)
6119 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
6120 if (aspm_disable_flag
)
6121 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
6123 err
= pci_enable_device_mem(pdev
);
6128 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(64));
6130 err
= dma_set_coherent_mask(&pdev
->dev
, DMA_BIT_MASK(64));
6134 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(32));
6136 err
= dma_set_coherent_mask(&pdev
->dev
,
6139 dev_err(&pdev
->dev
, "No usable DMA configuration, aborting\n");
6145 err
= pci_request_selected_regions_exclusive(pdev
,
6146 pci_select_bars(pdev
, IORESOURCE_MEM
),
6147 e1000e_driver_name
);
6151 /* AER (Advanced Error Reporting) hooks */
6152 pci_enable_pcie_error_reporting(pdev
);
6154 pci_set_master(pdev
);
6155 /* PCI config space info */
6156 err
= pci_save_state(pdev
);
6158 goto err_alloc_etherdev
;
6161 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
6163 goto err_alloc_etherdev
;
6165 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
6167 netdev
->irq
= pdev
->irq
;
6169 pci_set_drvdata(pdev
, netdev
);
6170 adapter
= netdev_priv(netdev
);
6172 adapter
->netdev
= netdev
;
6173 adapter
->pdev
= pdev
;
6175 adapter
->pba
= ei
->pba
;
6176 adapter
->flags
= ei
->flags
;
6177 adapter
->flags2
= ei
->flags2
;
6178 adapter
->hw
.adapter
= adapter
;
6179 adapter
->hw
.mac
.type
= ei
->mac
;
6180 adapter
->max_hw_frame_size
= ei
->max_hw_frame_size
;
6181 adapter
->msg_enable
= netif_msg_init(debug
, DEFAULT_MSG_ENABLE
);
6183 mmio_start
= pci_resource_start(pdev
, 0);
6184 mmio_len
= pci_resource_len(pdev
, 0);
6187 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
6188 if (!adapter
->hw
.hw_addr
)
6191 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
6192 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
6193 flash_start
= pci_resource_start(pdev
, 1);
6194 flash_len
= pci_resource_len(pdev
, 1);
6195 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
6196 if (!adapter
->hw
.flash_address
)
6200 /* construct the net_device struct */
6201 netdev
->netdev_ops
= &e1000e_netdev_ops
;
6202 e1000e_set_ethtool_ops(netdev
);
6203 netdev
->watchdog_timeo
= 5 * HZ
;
6204 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
6205 strlcpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
));
6207 netdev
->mem_start
= mmio_start
;
6208 netdev
->mem_end
= mmio_start
+ mmio_len
;
6210 adapter
->bd_number
= cards_found
++;
6212 e1000e_check_options(adapter
);
6214 /* setup adapter struct */
6215 err
= e1000_sw_init(adapter
);
6219 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
6220 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
6221 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
6223 err
= ei
->get_variants(adapter
);
6227 if ((adapter
->flags
& FLAG_IS_ICH
) &&
6228 (adapter
->flags
& FLAG_READ_ONLY_NVM
))
6229 e1000e_write_protect_nvm_ich8lan(&adapter
->hw
);
6231 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
6233 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
6235 /* Copper options */
6236 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
6237 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
6238 adapter
->hw
.phy
.disable_polarity_correction
= 0;
6239 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
6242 if (hw
->phy
.ops
.check_reset_block(hw
))
6243 e_info("PHY reset is blocked due to SOL/IDER session.\n");
6245 /* Set initial default active device features */
6246 netdev
->features
= (NETIF_F_SG
|
6247 NETIF_F_HW_VLAN_RX
|
6248 NETIF_F_HW_VLAN_TX
|
6255 /* Set user-changeable features (subset of all device features) */
6256 netdev
->hw_features
= netdev
->features
;
6257 netdev
->hw_features
|= NETIF_F_RXFCS
;
6258 netdev
->priv_flags
|= IFF_SUPP_NOFCS
;
6259 netdev
->hw_features
|= NETIF_F_RXALL
;
6261 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
6262 netdev
->features
|= NETIF_F_HW_VLAN_FILTER
;
6264 netdev
->vlan_features
|= (NETIF_F_SG
|
6269 netdev
->priv_flags
|= IFF_UNICAST_FLT
;
6271 if (pci_using_dac
) {
6272 netdev
->features
|= NETIF_F_HIGHDMA
;
6273 netdev
->vlan_features
|= NETIF_F_HIGHDMA
;
6276 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
6277 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
6280 * before reading the NVM, reset the controller to
6281 * put the device in a known good starting state
6283 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
6286 * systems with ASPM and others may see the checksum fail on the first
6287 * attempt. Let's give it a few tries
6290 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
6293 e_err("The NVM Checksum Is Not Valid\n");
6299 e1000_eeprom_checks(adapter
);
6301 /* copy the MAC address */
6302 if (e1000e_read_mac_addr(&adapter
->hw
))
6303 e_err("NVM Read Error while reading MAC address\n");
6305 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
6306 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
6308 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
6309 e_err("Invalid MAC Address: %pM\n", netdev
->perm_addr
);
6314 init_timer(&adapter
->watchdog_timer
);
6315 adapter
->watchdog_timer
.function
= e1000_watchdog
;
6316 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
6318 init_timer(&adapter
->phy_info_timer
);
6319 adapter
->phy_info_timer
.function
= e1000_update_phy_info
;
6320 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
6322 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
6323 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
6324 INIT_WORK(&adapter
->downshift_task
, e1000e_downshift_workaround
);
6325 INIT_WORK(&adapter
->update_phy_task
, e1000e_update_phy_task
);
6326 INIT_WORK(&adapter
->print_hang_task
, e1000_print_hw_hang
);
6328 /* Initialize link parameters. User can change them with ethtool */
6329 adapter
->hw
.mac
.autoneg
= 1;
6330 adapter
->fc_autoneg
= true;
6331 adapter
->hw
.fc
.requested_mode
= e1000_fc_default
;
6332 adapter
->hw
.fc
.current_mode
= e1000_fc_default
;
6333 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
6335 /* ring size defaults */
6336 adapter
->rx_ring
->count
= 256;
6337 adapter
->tx_ring
->count
= 256;
6340 * Initial Wake on LAN setting - If APM wake is enabled in
6341 * the EEPROM, enable the ACPI Magic Packet filter
6343 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
6344 /* APME bit in EEPROM is mapped to WUC.APME */
6345 eeprom_data
= er32(WUC
);
6346 eeprom_apme_mask
= E1000_WUC_APME
;
6347 if ((hw
->mac
.type
> e1000_ich10lan
) &&
6348 (eeprom_data
& E1000_WUC_PHY_WAKE
))
6349 adapter
->flags2
|= FLAG2_HAS_PHY_WAKEUP
;
6350 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
6351 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
6352 (adapter
->hw
.bus
.func
== 1))
6353 e1000_read_nvm(&adapter
->hw
, NVM_INIT_CONTROL3_PORT_B
,
6356 e1000_read_nvm(&adapter
->hw
, NVM_INIT_CONTROL3_PORT_A
,
6360 /* fetch WoL from EEPROM */
6361 if (eeprom_data
& eeprom_apme_mask
)
6362 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
6365 * now that we have the eeprom settings, apply the special cases
6366 * where the eeprom may be wrong or the board simply won't support
6367 * wake on lan on a particular port
6369 if (!(adapter
->flags
& FLAG_HAS_WOL
))
6370 adapter
->eeprom_wol
= 0;
6372 /* initialize the wol settings based on the eeprom settings */
6373 adapter
->wol
= adapter
->eeprom_wol
;
6374 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
6376 /* save off EEPROM version number */
6377 e1000_read_nvm(&adapter
->hw
, 5, 1, &adapter
->eeprom_vers
);
6379 /* reset the hardware with the new settings */
6380 e1000e_reset(adapter
);
6383 * If the controller has AMT, do not set DRV_LOAD until the interface
6384 * is up. For all other cases, let the f/w know that the h/w is now
6385 * under the control of the driver.
6387 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6388 e1000e_get_hw_control(adapter
);
6390 strlcpy(netdev
->name
, "eth%d", sizeof(netdev
->name
));
6391 err
= register_netdev(netdev
);
6395 /* carrier off reporting is important to ethtool even BEFORE open */
6396 netif_carrier_off(netdev
);
6398 e1000_print_device_info(adapter
);
6400 if (pci_dev_run_wake(pdev
))
6401 pm_runtime_put_noidle(&pdev
->dev
);
6406 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6407 e1000e_release_hw_control(adapter
);
6409 if (!hw
->phy
.ops
.check_reset_block(hw
))
6410 e1000_phy_hw_reset(&adapter
->hw
);
6412 kfree(adapter
->tx_ring
);
6413 kfree(adapter
->rx_ring
);
6415 if (adapter
->hw
.flash_address
)
6416 iounmap(adapter
->hw
.flash_address
);
6417 e1000e_reset_interrupt_capability(adapter
);
6419 iounmap(adapter
->hw
.hw_addr
);
6421 free_netdev(netdev
);
6423 pci_release_selected_regions(pdev
,
6424 pci_select_bars(pdev
, IORESOURCE_MEM
));
6427 pci_disable_device(pdev
);
6432 * e1000_remove - Device Removal Routine
6433 * @pdev: PCI device information struct
6435 * e1000_remove is called by the PCI subsystem to alert the driver
6436 * that it should release a PCI device. The could be caused by a
6437 * Hot-Plug event, or because the driver is going to be removed from
6440 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
6442 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6443 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6444 bool down
= test_bit(__E1000_DOWN
, &adapter
->state
);
6447 * The timers may be rescheduled, so explicitly disable them
6448 * from being rescheduled.
6451 set_bit(__E1000_DOWN
, &adapter
->state
);
6452 del_timer_sync(&adapter
->watchdog_timer
);
6453 del_timer_sync(&adapter
->phy_info_timer
);
6455 cancel_work_sync(&adapter
->reset_task
);
6456 cancel_work_sync(&adapter
->watchdog_task
);
6457 cancel_work_sync(&adapter
->downshift_task
);
6458 cancel_work_sync(&adapter
->update_phy_task
);
6459 cancel_work_sync(&adapter
->print_hang_task
);
6461 if (!(netdev
->flags
& IFF_UP
))
6462 e1000_power_down_phy(adapter
);
6464 /* Don't lie to e1000_close() down the road. */
6466 clear_bit(__E1000_DOWN
, &adapter
->state
);
6467 unregister_netdev(netdev
);
6469 if (pci_dev_run_wake(pdev
))
6470 pm_runtime_get_noresume(&pdev
->dev
);
6473 * Release control of h/w to f/w. If f/w is AMT enabled, this
6474 * would have already happened in close and is redundant.
6476 e1000e_release_hw_control(adapter
);
6478 e1000e_reset_interrupt_capability(adapter
);
6479 kfree(adapter
->tx_ring
);
6480 kfree(adapter
->rx_ring
);
6482 iounmap(adapter
->hw
.hw_addr
);
6483 if (adapter
->hw
.flash_address
)
6484 iounmap(adapter
->hw
.flash_address
);
6485 pci_release_selected_regions(pdev
,
6486 pci_select_bars(pdev
, IORESOURCE_MEM
));
6488 free_netdev(netdev
);
6491 pci_disable_pcie_error_reporting(pdev
);
6493 pci_disable_device(pdev
);
6496 /* PCI Error Recovery (ERS) */
6497 static struct pci_error_handlers e1000_err_handler
= {
6498 .error_detected
= e1000_io_error_detected
,
6499 .slot_reset
= e1000_io_slot_reset
,
6500 .resume
= e1000_io_resume
,
6503 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl
) = {
6504 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
6505 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
6506 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
6507 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
), board_82571
},
6508 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
6509 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
6510 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
6511 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
6512 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
6514 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
6515 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
6516 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
6517 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
6519 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
6520 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
6521 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
6523 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574L
), board_82574
},
6524 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574LA
), board_82574
},
6525 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82583V
), board_82583
},
6527 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
6528 board_80003es2lan
},
6529 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
6530 board_80003es2lan
},
6531 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
6532 board_80003es2lan
},
6533 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
6534 board_80003es2lan
},
6536 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
6537 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
6538 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
6539 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
6540 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
6541 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
6542 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
6543 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_82567V_3
), board_ich8lan
},
6545 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
6546 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
6547 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
6548 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
6549 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
6550 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_BM
), board_ich9lan
},
6551 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
6552 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
6553 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
6555 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
6556 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
6557 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
6559 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LM
), board_ich10lan
},
6560 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LF
), board_ich10lan
},
6561 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_V
), board_ich10lan
},
6563 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LM
), board_pchlan
},
6564 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LC
), board_pchlan
},
6565 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DM
), board_pchlan
},
6566 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DC
), board_pchlan
},
6568 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_LM
), board_pch2lan
},
6569 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_V
), board_pch2lan
},
6571 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */
6573 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
6576 static const struct dev_pm_ops e1000_pm_ops
= {
6577 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend
, e1000_resume
)
6578 SET_RUNTIME_PM_OPS(e1000_runtime_suspend
,
6579 e1000_runtime_resume
, e1000_idle
)
6583 /* PCI Device API Driver */
6584 static struct pci_driver e1000_driver
= {
6585 .name
= e1000e_driver_name
,
6586 .id_table
= e1000_pci_tbl
,
6587 .probe
= e1000_probe
,
6588 .remove
= __devexit_p(e1000_remove
),
6591 .pm
= &e1000_pm_ops
,
6594 .shutdown
= e1000_shutdown
,
6595 .err_handler
= &e1000_err_handler
6599 * e1000_init_module - Driver Registration Routine
6601 * e1000_init_module is the first routine called when the driver is
6602 * loaded. All it does is register with the PCI subsystem.
6604 static int __init
e1000_init_module(void)
6607 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
6608 e1000e_driver_version
);
6609 pr_info("Copyright(c) 1999 - 2012 Intel Corporation.\n");
6610 ret
= pci_register_driver(&e1000_driver
);
6614 module_init(e1000_init_module
);
6617 * e1000_exit_module - Driver Exit Cleanup Routine
6619 * e1000_exit_module is called just before the driver is removed
6622 static void __exit
e1000_exit_module(void)
6624 pci_unregister_driver(&e1000_driver
);
6626 module_exit(e1000_exit_module
);
6629 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
6630 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
6631 MODULE_LICENSE("GPL");
6632 MODULE_VERSION(DRV_VERSION
);