1 /* Intel PRO/1000 Linux driver
2 * Copyright(c) 1999 - 2014 Intel Corporation.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * The full GNU General Public License is included in this distribution in
14 * the file called "COPYING".
16 * Contact Information:
17 * Linux NICS <linux.nics@intel.com>
18 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
19 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
22 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24 #include <linux/module.h>
25 #include <linux/types.h>
26 #include <linux/init.h>
27 #include <linux/pci.h>
28 #include <linux/vmalloc.h>
29 #include <linux/pagemap.h>
30 #include <linux/delay.h>
31 #include <linux/netdevice.h>
32 #include <linux/interrupt.h>
33 #include <linux/tcp.h>
34 #include <linux/ipv6.h>
35 #include <linux/slab.h>
36 #include <net/checksum.h>
37 #include <net/ip6_checksum.h>
38 #include <linux/ethtool.h>
39 #include <linux/if_vlan.h>
40 #include <linux/cpu.h>
41 #include <linux/smp.h>
42 #include <linux/pm_qos.h>
43 #include <linux/pm_runtime.h>
44 #include <linux/aer.h>
45 #include <linux/prefetch.h>
49 #define DRV_EXTRAVERSION "-k"
51 #define DRV_VERSION "2.3.2" DRV_EXTRAVERSION
52 char e1000e_driver_name
[] = "e1000e";
53 const char e1000e_driver_version
[] = DRV_VERSION
;
55 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
56 static int debug
= -1;
57 module_param(debug
, int, 0);
58 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
60 static const struct e1000_info
*e1000_info_tbl
[] = {
61 [board_82571
] = &e1000_82571_info
,
62 [board_82572
] = &e1000_82572_info
,
63 [board_82573
] = &e1000_82573_info
,
64 [board_82574
] = &e1000_82574_info
,
65 [board_82583
] = &e1000_82583_info
,
66 [board_80003es2lan
] = &e1000_es2_info
,
67 [board_ich8lan
] = &e1000_ich8_info
,
68 [board_ich9lan
] = &e1000_ich9_info
,
69 [board_ich10lan
] = &e1000_ich10_info
,
70 [board_pchlan
] = &e1000_pch_info
,
71 [board_pch2lan
] = &e1000_pch2_info
,
72 [board_pch_lpt
] = &e1000_pch_lpt_info
,
75 struct e1000_reg_info
{
80 static const struct e1000_reg_info e1000_reg_info_tbl
[] = {
81 /* General Registers */
83 {E1000_STATUS
, "STATUS"},
84 {E1000_CTRL_EXT
, "CTRL_EXT"},
86 /* Interrupt Registers */
91 {E1000_RDLEN(0), "RDLEN"},
92 {E1000_RDH(0), "RDH"},
93 {E1000_RDT(0), "RDT"},
95 {E1000_RXDCTL(0), "RXDCTL"},
97 {E1000_RDBAL(0), "RDBAL"},
98 {E1000_RDBAH(0), "RDBAH"},
100 {E1000_RDFT
, "RDFT"},
101 {E1000_RDFHS
, "RDFHS"},
102 {E1000_RDFTS
, "RDFTS"},
103 {E1000_RDFPC
, "RDFPC"},
106 {E1000_TCTL
, "TCTL"},
107 {E1000_TDBAL(0), "TDBAL"},
108 {E1000_TDBAH(0), "TDBAH"},
109 {E1000_TDLEN(0), "TDLEN"},
110 {E1000_TDH(0), "TDH"},
111 {E1000_TDT(0), "TDT"},
112 {E1000_TIDV
, "TIDV"},
113 {E1000_TXDCTL(0), "TXDCTL"},
114 {E1000_TADV
, "TADV"},
115 {E1000_TARC(0), "TARC"},
116 {E1000_TDFH
, "TDFH"},
117 {E1000_TDFT
, "TDFT"},
118 {E1000_TDFHS
, "TDFHS"},
119 {E1000_TDFTS
, "TDFTS"},
120 {E1000_TDFPC
, "TDFPC"},
122 /* List Terminator */
127 * e1000_regdump - register printout routine
128 * @hw: pointer to the HW structure
129 * @reginfo: pointer to the register info table
131 static void e1000_regdump(struct e1000_hw
*hw
, struct e1000_reg_info
*reginfo
)
137 switch (reginfo
->ofs
) {
138 case E1000_RXDCTL(0):
139 for (n
= 0; n
< 2; n
++)
140 regs
[n
] = __er32(hw
, E1000_RXDCTL(n
));
142 case E1000_TXDCTL(0):
143 for (n
= 0; n
< 2; n
++)
144 regs
[n
] = __er32(hw
, E1000_TXDCTL(n
));
147 for (n
= 0; n
< 2; n
++)
148 regs
[n
] = __er32(hw
, E1000_TARC(n
));
151 pr_info("%-15s %08x\n",
152 reginfo
->name
, __er32(hw
, reginfo
->ofs
));
156 snprintf(rname
, 16, "%s%s", reginfo
->name
, "[0-1]");
157 pr_info("%-15s %08x %08x\n", rname
, regs
[0], regs
[1]);
160 static void e1000e_dump_ps_pages(struct e1000_adapter
*adapter
,
161 struct e1000_buffer
*bi
)
164 struct e1000_ps_page
*ps_page
;
166 for (i
= 0; i
< adapter
->rx_ps_pages
; i
++) {
167 ps_page
= &bi
->ps_pages
[i
];
170 pr_info("packet dump for ps_page %d:\n", i
);
171 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_ADDRESS
,
172 16, 1, page_address(ps_page
->page
),
179 * e1000e_dump - Print registers, Tx-ring and Rx-ring
180 * @adapter: board private structure
182 static void e1000e_dump(struct e1000_adapter
*adapter
)
184 struct net_device
*netdev
= adapter
->netdev
;
185 struct e1000_hw
*hw
= &adapter
->hw
;
186 struct e1000_reg_info
*reginfo
;
187 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
188 struct e1000_tx_desc
*tx_desc
;
193 struct e1000_buffer
*buffer_info
;
194 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
195 union e1000_rx_desc_packet_split
*rx_desc_ps
;
196 union e1000_rx_desc_extended
*rx_desc
;
206 if (!netif_msg_hw(adapter
))
209 /* Print netdevice Info */
211 dev_info(&adapter
->pdev
->dev
, "Net device Info\n");
212 pr_info("Device Name state trans_start last_rx\n");
213 pr_info("%-15s %016lX %016lX %016lX\n", netdev
->name
,
214 netdev
->state
, netdev
->trans_start
, netdev
->last_rx
);
217 /* Print Registers */
218 dev_info(&adapter
->pdev
->dev
, "Register Dump\n");
219 pr_info(" Register Name Value\n");
220 for (reginfo
= (struct e1000_reg_info
*)e1000_reg_info_tbl
;
221 reginfo
->name
; reginfo
++) {
222 e1000_regdump(hw
, reginfo
);
225 /* Print Tx Ring Summary */
226 if (!netdev
|| !netif_running(netdev
))
229 dev_info(&adapter
->pdev
->dev
, "Tx Ring Summary\n");
230 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
231 buffer_info
= &tx_ring
->buffer_info
[tx_ring
->next_to_clean
];
232 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n",
233 0, tx_ring
->next_to_use
, tx_ring
->next_to_clean
,
234 (unsigned long long)buffer_info
->dma
,
236 buffer_info
->next_to_watch
,
237 (unsigned long long)buffer_info
->time_stamp
);
240 if (!netif_msg_tx_done(adapter
))
241 goto rx_ring_summary
;
243 dev_info(&adapter
->pdev
->dev
, "Tx Ring Dump\n");
245 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
247 * Legacy Transmit Descriptor
248 * +--------------------------------------------------------------+
249 * 0 | Buffer Address [63:0] (Reserved on Write Back) |
250 * +--------------------------------------------------------------+
251 * 8 | Special | CSS | Status | CMD | CSO | Length |
252 * +--------------------------------------------------------------+
253 * 63 48 47 36 35 32 31 24 23 16 15 0
255 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
256 * 63 48 47 40 39 32 31 16 15 8 7 0
257 * +----------------------------------------------------------------+
258 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
259 * +----------------------------------------------------------------+
260 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
261 * +----------------------------------------------------------------+
262 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
264 * Extended Data Descriptor (DTYP=0x1)
265 * +----------------------------------------------------------------+
266 * 0 | Buffer Address [63:0] |
267 * +----------------------------------------------------------------+
268 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
269 * +----------------------------------------------------------------+
270 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
272 pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n");
273 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n");
274 pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Data format\n");
275 for (i
= 0; tx_ring
->desc
&& (i
< tx_ring
->count
); i
++) {
276 const char *next_desc
;
277 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
278 buffer_info
= &tx_ring
->buffer_info
[i
];
279 u0
= (struct my_u0
*)tx_desc
;
280 if (i
== tx_ring
->next_to_use
&& i
== tx_ring
->next_to_clean
)
281 next_desc
= " NTC/U";
282 else if (i
== tx_ring
->next_to_use
)
284 else if (i
== tx_ring
->next_to_clean
)
288 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n",
289 (!(le64_to_cpu(u0
->b
) & (1 << 29)) ? 'l' :
290 ((le64_to_cpu(u0
->b
) & (1 << 20)) ? 'd' : 'c')),
292 (unsigned long long)le64_to_cpu(u0
->a
),
293 (unsigned long long)le64_to_cpu(u0
->b
),
294 (unsigned long long)buffer_info
->dma
,
295 buffer_info
->length
, buffer_info
->next_to_watch
,
296 (unsigned long long)buffer_info
->time_stamp
,
297 buffer_info
->skb
, next_desc
);
299 if (netif_msg_pktdata(adapter
) && buffer_info
->skb
)
300 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_ADDRESS
,
301 16, 1, buffer_info
->skb
->data
,
302 buffer_info
->skb
->len
, true);
305 /* Print Rx Ring Summary */
307 dev_info(&adapter
->pdev
->dev
, "Rx Ring Summary\n");
308 pr_info("Queue [NTU] [NTC]\n");
309 pr_info(" %5d %5X %5X\n",
310 0, rx_ring
->next_to_use
, rx_ring
->next_to_clean
);
313 if (!netif_msg_rx_status(adapter
))
316 dev_info(&adapter
->pdev
->dev
, "Rx Ring Dump\n");
317 switch (adapter
->rx_ps_pages
) {
321 /* [Extended] Packet Split Receive Descriptor Format
323 * +-----------------------------------------------------+
324 * 0 | Buffer Address 0 [63:0] |
325 * +-----------------------------------------------------+
326 * 8 | Buffer Address 1 [63:0] |
327 * +-----------------------------------------------------+
328 * 16 | Buffer Address 2 [63:0] |
329 * +-----------------------------------------------------+
330 * 24 | Buffer Address 3 [63:0] |
331 * +-----------------------------------------------------+
333 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");
334 /* [Extended] Receive Descriptor (Write-Back) Format
336 * 63 48 47 32 31 13 12 8 7 4 3 0
337 * +------------------------------------------------------+
338 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
339 * | Checksum | Ident | | Queue | | Type |
340 * +------------------------------------------------------+
341 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
342 * +------------------------------------------------------+
343 * 63 48 47 32 31 20 19 0
345 pr_info("RWB[desc] [ck ipid mrqhsh] [vl l0 ee es] [ l3 l2 l1 hs] [reserved ] ---------------- [bi->skb] <-- Ext Rx Write-Back format\n");
346 for (i
= 0; i
< rx_ring
->count
; i
++) {
347 const char *next_desc
;
348 buffer_info
= &rx_ring
->buffer_info
[i
];
349 rx_desc_ps
= E1000_RX_DESC_PS(*rx_ring
, i
);
350 u1
= (struct my_u1
*)rx_desc_ps
;
352 le32_to_cpu(rx_desc_ps
->wb
.middle
.status_error
);
354 if (i
== rx_ring
->next_to_use
)
356 else if (i
== rx_ring
->next_to_clean
)
361 if (staterr
& E1000_RXD_STAT_DD
) {
362 /* Descriptor Done */
363 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n",
365 (unsigned long long)le64_to_cpu(u1
->a
),
366 (unsigned long long)le64_to_cpu(u1
->b
),
367 (unsigned long long)le64_to_cpu(u1
->c
),
368 (unsigned long long)le64_to_cpu(u1
->d
),
369 buffer_info
->skb
, next_desc
);
371 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n",
373 (unsigned long long)le64_to_cpu(u1
->a
),
374 (unsigned long long)le64_to_cpu(u1
->b
),
375 (unsigned long long)le64_to_cpu(u1
->c
),
376 (unsigned long long)le64_to_cpu(u1
->d
),
377 (unsigned long long)buffer_info
->dma
,
378 buffer_info
->skb
, next_desc
);
380 if (netif_msg_pktdata(adapter
))
381 e1000e_dump_ps_pages(adapter
,
388 /* Extended Receive Descriptor (Read) Format
390 * +-----------------------------------------------------+
391 * 0 | Buffer Address [63:0] |
392 * +-----------------------------------------------------+
394 * +-----------------------------------------------------+
396 pr_info("R [desc] [buf addr 63:0 ] [reserved 63:0 ] [bi->dma ] [bi->skb] <-- Ext (Read) format\n");
397 /* Extended Receive Descriptor (Write-Back) Format
399 * 63 48 47 32 31 24 23 4 3 0
400 * +------------------------------------------------------+
402 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS |
403 * | Packet | IP | | | Type |
404 * | Checksum | Ident | | | |
405 * +------------------------------------------------------+
406 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
407 * +------------------------------------------------------+
408 * 63 48 47 32 31 20 19 0
410 pr_info("RWB[desc] [cs ipid mrq] [vt ln xe xs] [bi->skb] <-- Ext (Write-Back) format\n");
412 for (i
= 0; i
< rx_ring
->count
; i
++) {
413 const char *next_desc
;
415 buffer_info
= &rx_ring
->buffer_info
[i
];
416 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
417 u1
= (struct my_u1
*)rx_desc
;
418 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
420 if (i
== rx_ring
->next_to_use
)
422 else if (i
== rx_ring
->next_to_clean
)
427 if (staterr
& E1000_RXD_STAT_DD
) {
428 /* Descriptor Done */
429 pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n",
431 (unsigned long long)le64_to_cpu(u1
->a
),
432 (unsigned long long)le64_to_cpu(u1
->b
),
433 buffer_info
->skb
, next_desc
);
435 pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n",
437 (unsigned long long)le64_to_cpu(u1
->a
),
438 (unsigned long long)le64_to_cpu(u1
->b
),
439 (unsigned long long)buffer_info
->dma
,
440 buffer_info
->skb
, next_desc
);
442 if (netif_msg_pktdata(adapter
) &&
444 print_hex_dump(KERN_INFO
, "",
445 DUMP_PREFIX_ADDRESS
, 16,
447 buffer_info
->skb
->data
,
448 adapter
->rx_buffer_len
,
456 * e1000_desc_unused - calculate if we have unused descriptors
458 static int e1000_desc_unused(struct e1000_ring
*ring
)
460 if (ring
->next_to_clean
> ring
->next_to_use
)
461 return ring
->next_to_clean
- ring
->next_to_use
- 1;
463 return ring
->count
+ ring
->next_to_clean
- ring
->next_to_use
- 1;
467 * e1000e_systim_to_hwtstamp - convert system time value to hw time stamp
468 * @adapter: board private structure
469 * @hwtstamps: time stamp structure to update
470 * @systim: unsigned 64bit system time value.
472 * Convert the system time value stored in the RX/TXSTMP registers into a
473 * hwtstamp which can be used by the upper level time stamping functions.
475 * The 'systim_lock' spinlock is used to protect the consistency of the
476 * system time value. This is needed because reading the 64 bit time
477 * value involves reading two 32 bit registers. The first read latches the
480 static void e1000e_systim_to_hwtstamp(struct e1000_adapter
*adapter
,
481 struct skb_shared_hwtstamps
*hwtstamps
,
487 spin_lock_irqsave(&adapter
->systim_lock
, flags
);
488 ns
= timecounter_cyc2time(&adapter
->tc
, systim
);
489 spin_unlock_irqrestore(&adapter
->systim_lock
, flags
);
491 memset(hwtstamps
, 0, sizeof(*hwtstamps
));
492 hwtstamps
->hwtstamp
= ns_to_ktime(ns
);
496 * e1000e_rx_hwtstamp - utility function which checks for Rx time stamp
497 * @adapter: board private structure
498 * @status: descriptor extended error and status field
499 * @skb: particular skb to include time stamp
501 * If the time stamp is valid, convert it into the timecounter ns value
502 * and store that result into the shhwtstamps structure which is passed
503 * up the network stack.
505 static void e1000e_rx_hwtstamp(struct e1000_adapter
*adapter
, u32 status
,
508 struct e1000_hw
*hw
= &adapter
->hw
;
511 if (!(adapter
->flags
& FLAG_HAS_HW_TIMESTAMP
) ||
512 !(status
& E1000_RXDEXT_STATERR_TST
) ||
513 !(er32(TSYNCRXCTL
) & E1000_TSYNCRXCTL_VALID
))
516 /* The Rx time stamp registers contain the time stamp. No other
517 * received packet will be time stamped until the Rx time stamp
518 * registers are read. Because only one packet can be time stamped
519 * at a time, the register values must belong to this packet and
520 * therefore none of the other additional attributes need to be
523 rxstmp
= (u64
)er32(RXSTMPL
);
524 rxstmp
|= (u64
)er32(RXSTMPH
) << 32;
525 e1000e_systim_to_hwtstamp(adapter
, skb_hwtstamps(skb
), rxstmp
);
527 adapter
->flags2
&= ~FLAG2_CHECK_RX_HWTSTAMP
;
531 * e1000_receive_skb - helper function to handle Rx indications
532 * @adapter: board private structure
533 * @staterr: descriptor extended error and status field as written by hardware
534 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
535 * @skb: pointer to sk_buff to be indicated to stack
537 static void e1000_receive_skb(struct e1000_adapter
*adapter
,
538 struct net_device
*netdev
, struct sk_buff
*skb
,
539 u32 staterr
, __le16 vlan
)
541 u16 tag
= le16_to_cpu(vlan
);
543 e1000e_rx_hwtstamp(adapter
, staterr
, skb
);
545 skb
->protocol
= eth_type_trans(skb
, netdev
);
547 if (staterr
& E1000_RXD_STAT_VP
)
548 __vlan_hwaccel_put_tag(skb
, htons(ETH_P_8021Q
), tag
);
550 napi_gro_receive(&adapter
->napi
, skb
);
554 * e1000_rx_checksum - Receive Checksum Offload
555 * @adapter: board private structure
556 * @status_err: receive descriptor status and error fields
557 * @csum: receive descriptor csum field
558 * @sk_buff: socket buffer with received data
560 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
563 u16 status
= (u16
)status_err
;
564 u8 errors
= (u8
)(status_err
>> 24);
566 skb_checksum_none_assert(skb
);
568 /* Rx checksum disabled */
569 if (!(adapter
->netdev
->features
& NETIF_F_RXCSUM
))
572 /* Ignore Checksum bit is set */
573 if (status
& E1000_RXD_STAT_IXSM
)
576 /* TCP/UDP checksum error bit or IP checksum error bit is set */
577 if (errors
& (E1000_RXD_ERR_TCPE
| E1000_RXD_ERR_IPE
)) {
578 /* let the stack verify checksum errors */
579 adapter
->hw_csum_err
++;
583 /* TCP/UDP Checksum has not been calculated */
584 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
587 /* It must be a TCP or UDP packet with a valid checksum */
588 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
589 adapter
->hw_csum_good
++;
592 static void e1000e_update_rdt_wa(struct e1000_ring
*rx_ring
, unsigned int i
)
594 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
595 struct e1000_hw
*hw
= &adapter
->hw
;
596 s32 ret_val
= __ew32_prepare(hw
);
598 writel(i
, rx_ring
->tail
);
600 if (unlikely(!ret_val
&& (i
!= readl(rx_ring
->tail
)))) {
601 u32 rctl
= er32(RCTL
);
602 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
603 e_err("ME firmware caused invalid RDT - resetting\n");
604 schedule_work(&adapter
->reset_task
);
608 static void e1000e_update_tdt_wa(struct e1000_ring
*tx_ring
, unsigned int i
)
610 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
611 struct e1000_hw
*hw
= &adapter
->hw
;
612 s32 ret_val
= __ew32_prepare(hw
);
614 writel(i
, tx_ring
->tail
);
616 if (unlikely(!ret_val
&& (i
!= readl(tx_ring
->tail
)))) {
617 u32 tctl
= er32(TCTL
);
618 ew32(TCTL
, tctl
& ~E1000_TCTL_EN
);
619 e_err("ME firmware caused invalid TDT - resetting\n");
620 schedule_work(&adapter
->reset_task
);
625 * e1000_alloc_rx_buffers - Replace used receive buffers
626 * @rx_ring: Rx descriptor ring
628 static void e1000_alloc_rx_buffers(struct e1000_ring
*rx_ring
,
629 int cleaned_count
, gfp_t gfp
)
631 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
632 struct net_device
*netdev
= adapter
->netdev
;
633 struct pci_dev
*pdev
= adapter
->pdev
;
634 union e1000_rx_desc_extended
*rx_desc
;
635 struct e1000_buffer
*buffer_info
;
638 unsigned int bufsz
= adapter
->rx_buffer_len
;
640 i
= rx_ring
->next_to_use
;
641 buffer_info
= &rx_ring
->buffer_info
[i
];
643 while (cleaned_count
--) {
644 skb
= buffer_info
->skb
;
650 skb
= __netdev_alloc_skb_ip_align(netdev
, bufsz
, gfp
);
652 /* Better luck next round */
653 adapter
->alloc_rx_buff_failed
++;
657 buffer_info
->skb
= skb
;
659 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
660 adapter
->rx_buffer_len
,
662 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
663 dev_err(&pdev
->dev
, "Rx DMA map failed\n");
664 adapter
->rx_dma_failed
++;
668 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
669 rx_desc
->read
.buffer_addr
= cpu_to_le64(buffer_info
->dma
);
671 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
672 /* Force memory writes to complete before letting h/w
673 * know there are new descriptors to fetch. (Only
674 * applicable for weak-ordered memory model archs,
678 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
679 e1000e_update_rdt_wa(rx_ring
, i
);
681 writel(i
, rx_ring
->tail
);
684 if (i
== rx_ring
->count
)
686 buffer_info
= &rx_ring
->buffer_info
[i
];
689 rx_ring
->next_to_use
= i
;
693 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
694 * @rx_ring: Rx descriptor ring
696 static void e1000_alloc_rx_buffers_ps(struct e1000_ring
*rx_ring
,
697 int cleaned_count
, gfp_t gfp
)
699 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
700 struct net_device
*netdev
= adapter
->netdev
;
701 struct pci_dev
*pdev
= adapter
->pdev
;
702 union e1000_rx_desc_packet_split
*rx_desc
;
703 struct e1000_buffer
*buffer_info
;
704 struct e1000_ps_page
*ps_page
;
708 i
= rx_ring
->next_to_use
;
709 buffer_info
= &rx_ring
->buffer_info
[i
];
711 while (cleaned_count
--) {
712 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
714 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
715 ps_page
= &buffer_info
->ps_pages
[j
];
716 if (j
>= adapter
->rx_ps_pages
) {
717 /* all unused desc entries get hw null ptr */
718 rx_desc
->read
.buffer_addr
[j
+ 1] =
722 if (!ps_page
->page
) {
723 ps_page
->page
= alloc_page(gfp
);
724 if (!ps_page
->page
) {
725 adapter
->alloc_rx_buff_failed
++;
728 ps_page
->dma
= dma_map_page(&pdev
->dev
,
732 if (dma_mapping_error(&pdev
->dev
,
734 dev_err(&adapter
->pdev
->dev
,
735 "Rx DMA page map failed\n");
736 adapter
->rx_dma_failed
++;
740 /* Refresh the desc even if buffer_addrs
741 * didn't change because each write-back
744 rx_desc
->read
.buffer_addr
[j
+ 1] =
745 cpu_to_le64(ps_page
->dma
);
748 skb
= __netdev_alloc_skb_ip_align(netdev
, adapter
->rx_ps_bsize0
,
752 adapter
->alloc_rx_buff_failed
++;
756 buffer_info
->skb
= skb
;
757 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
758 adapter
->rx_ps_bsize0
,
760 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
761 dev_err(&pdev
->dev
, "Rx DMA map failed\n");
762 adapter
->rx_dma_failed
++;
764 dev_kfree_skb_any(skb
);
765 buffer_info
->skb
= NULL
;
769 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
771 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
772 /* Force memory writes to complete before letting h/w
773 * know there are new descriptors to fetch. (Only
774 * applicable for weak-ordered memory model archs,
778 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
779 e1000e_update_rdt_wa(rx_ring
, i
<< 1);
781 writel(i
<< 1, rx_ring
->tail
);
785 if (i
== rx_ring
->count
)
787 buffer_info
= &rx_ring
->buffer_info
[i
];
791 rx_ring
->next_to_use
= i
;
795 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
796 * @rx_ring: Rx descriptor ring
797 * @cleaned_count: number of buffers to allocate this pass
800 static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring
*rx_ring
,
801 int cleaned_count
, gfp_t gfp
)
803 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
804 struct net_device
*netdev
= adapter
->netdev
;
805 struct pci_dev
*pdev
= adapter
->pdev
;
806 union e1000_rx_desc_extended
*rx_desc
;
807 struct e1000_buffer
*buffer_info
;
810 unsigned int bufsz
= 256 - 16; /* for skb_reserve */
812 i
= rx_ring
->next_to_use
;
813 buffer_info
= &rx_ring
->buffer_info
[i
];
815 while (cleaned_count
--) {
816 skb
= buffer_info
->skb
;
822 skb
= __netdev_alloc_skb_ip_align(netdev
, bufsz
, gfp
);
823 if (unlikely(!skb
)) {
824 /* Better luck next round */
825 adapter
->alloc_rx_buff_failed
++;
829 buffer_info
->skb
= skb
;
831 /* allocate a new page if necessary */
832 if (!buffer_info
->page
) {
833 buffer_info
->page
= alloc_page(gfp
);
834 if (unlikely(!buffer_info
->page
)) {
835 adapter
->alloc_rx_buff_failed
++;
840 if (!buffer_info
->dma
) {
841 buffer_info
->dma
= dma_map_page(&pdev
->dev
,
842 buffer_info
->page
, 0,
845 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
846 adapter
->alloc_rx_buff_failed
++;
851 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
852 rx_desc
->read
.buffer_addr
= cpu_to_le64(buffer_info
->dma
);
854 if (unlikely(++i
== rx_ring
->count
))
856 buffer_info
= &rx_ring
->buffer_info
[i
];
859 if (likely(rx_ring
->next_to_use
!= i
)) {
860 rx_ring
->next_to_use
= i
;
861 if (unlikely(i
-- == 0))
862 i
= (rx_ring
->count
- 1);
864 /* Force memory writes to complete before letting h/w
865 * know there are new descriptors to fetch. (Only
866 * applicable for weak-ordered memory model archs,
870 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
871 e1000e_update_rdt_wa(rx_ring
, i
);
873 writel(i
, rx_ring
->tail
);
877 static inline void e1000_rx_hash(struct net_device
*netdev
, __le32 rss
,
880 if (netdev
->features
& NETIF_F_RXHASH
)
881 skb_set_hash(skb
, le32_to_cpu(rss
), PKT_HASH_TYPE_L3
);
885 * e1000_clean_rx_irq - Send received data up the network stack
886 * @rx_ring: Rx descriptor ring
888 * the return value indicates whether actual cleaning was done, there
889 * is no guarantee that everything was cleaned
891 static bool e1000_clean_rx_irq(struct e1000_ring
*rx_ring
, int *work_done
,
894 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
895 struct net_device
*netdev
= adapter
->netdev
;
896 struct pci_dev
*pdev
= adapter
->pdev
;
897 struct e1000_hw
*hw
= &adapter
->hw
;
898 union e1000_rx_desc_extended
*rx_desc
, *next_rxd
;
899 struct e1000_buffer
*buffer_info
, *next_buffer
;
902 int cleaned_count
= 0;
903 bool cleaned
= false;
904 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
906 i
= rx_ring
->next_to_clean
;
907 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
908 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
909 buffer_info
= &rx_ring
->buffer_info
[i
];
911 while (staterr
& E1000_RXD_STAT_DD
) {
914 if (*work_done
>= work_to_do
)
917 rmb(); /* read descriptor and rx_buffer_info after status DD */
919 skb
= buffer_info
->skb
;
920 buffer_info
->skb
= NULL
;
922 prefetch(skb
->data
- NET_IP_ALIGN
);
925 if (i
== rx_ring
->count
)
927 next_rxd
= E1000_RX_DESC_EXT(*rx_ring
, i
);
930 next_buffer
= &rx_ring
->buffer_info
[i
];
934 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
935 adapter
->rx_buffer_len
, DMA_FROM_DEVICE
);
936 buffer_info
->dma
= 0;
938 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
940 /* !EOP means multiple descriptors were used to store a single
941 * packet, if that's the case we need to toss it. In fact, we
942 * need to toss every packet with the EOP bit clear and the
943 * next frame that _does_ have the EOP bit set, as it is by
944 * definition only a frame fragment
946 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
)))
947 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
949 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
950 /* All receives must fit into a single buffer */
951 e_dbg("Receive packet consumed multiple buffers\n");
953 buffer_info
->skb
= skb
;
954 if (staterr
& E1000_RXD_STAT_EOP
)
955 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
959 if (unlikely((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
960 !(netdev
->features
& NETIF_F_RXALL
))) {
962 buffer_info
->skb
= skb
;
966 /* adjust length to remove Ethernet CRC */
967 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
968 /* If configured to store CRC, don't subtract FCS,
969 * but keep the FCS bytes out of the total_rx_bytes
972 if (netdev
->features
& NETIF_F_RXFCS
)
978 total_rx_bytes
+= length
;
981 /* code added for copybreak, this should improve
982 * performance for small packets with large amounts
983 * of reassembly being done in the stack
985 if (length
< copybreak
) {
986 struct sk_buff
*new_skb
=
987 netdev_alloc_skb_ip_align(netdev
, length
);
989 skb_copy_to_linear_data_offset(new_skb
,
995 /* save the skb in buffer_info as good */
996 buffer_info
->skb
= skb
;
999 /* else just continue with the old one */
1001 /* end copybreak code */
1002 skb_put(skb
, length
);
1004 /* Receive Checksum Offload */
1005 e1000_rx_checksum(adapter
, staterr
, skb
);
1007 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1009 e1000_receive_skb(adapter
, netdev
, skb
, staterr
,
1010 rx_desc
->wb
.upper
.vlan
);
1013 rx_desc
->wb
.upper
.status_error
&= cpu_to_le32(~0xFF);
1015 /* return some buffers to hardware, one at a time is too slow */
1016 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
1017 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1022 /* use prefetched values */
1024 buffer_info
= next_buffer
;
1026 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1028 rx_ring
->next_to_clean
= i
;
1030 cleaned_count
= e1000_desc_unused(rx_ring
);
1032 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1034 adapter
->total_rx_bytes
+= total_rx_bytes
;
1035 adapter
->total_rx_packets
+= total_rx_packets
;
1039 static void e1000_put_txbuf(struct e1000_ring
*tx_ring
,
1040 struct e1000_buffer
*buffer_info
)
1042 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
1044 if (buffer_info
->dma
) {
1045 if (buffer_info
->mapped_as_page
)
1046 dma_unmap_page(&adapter
->pdev
->dev
, buffer_info
->dma
,
1047 buffer_info
->length
, DMA_TO_DEVICE
);
1049 dma_unmap_single(&adapter
->pdev
->dev
, buffer_info
->dma
,
1050 buffer_info
->length
, DMA_TO_DEVICE
);
1051 buffer_info
->dma
= 0;
1053 if (buffer_info
->skb
) {
1054 dev_kfree_skb_any(buffer_info
->skb
);
1055 buffer_info
->skb
= NULL
;
1057 buffer_info
->time_stamp
= 0;
1060 static void e1000_print_hw_hang(struct work_struct
*work
)
1062 struct e1000_adapter
*adapter
= container_of(work
,
1063 struct e1000_adapter
,
1065 struct net_device
*netdev
= adapter
->netdev
;
1066 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1067 unsigned int i
= tx_ring
->next_to_clean
;
1068 unsigned int eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1069 struct e1000_tx_desc
*eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1070 struct e1000_hw
*hw
= &adapter
->hw
;
1071 u16 phy_status
, phy_1000t_status
, phy_ext_status
;
1074 if (test_bit(__E1000_DOWN
, &adapter
->state
))
1077 if (!adapter
->tx_hang_recheck
&& (adapter
->flags2
& FLAG2_DMA_BURST
)) {
1078 /* May be block on write-back, flush and detect again
1079 * flush pending descriptor writebacks to memory
1081 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
1082 /* execute the writes immediately */
1084 /* Due to rare timing issues, write to TIDV again to ensure
1085 * the write is successful
1087 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
1088 /* execute the writes immediately */
1090 adapter
->tx_hang_recheck
= true;
1093 adapter
->tx_hang_recheck
= false;
1095 if (er32(TDH(0)) == er32(TDT(0))) {
1096 e_dbg("false hang detected, ignoring\n");
1100 /* Real hang detected */
1101 netif_stop_queue(netdev
);
1103 e1e_rphy(hw
, MII_BMSR
, &phy_status
);
1104 e1e_rphy(hw
, MII_STAT1000
, &phy_1000t_status
);
1105 e1e_rphy(hw
, MII_ESTATUS
, &phy_ext_status
);
1107 pci_read_config_word(adapter
->pdev
, PCI_STATUS
, &pci_status
);
1109 /* detected Hardware unit hang */
1110 e_err("Detected Hardware Unit Hang:\n"
1113 " next_to_use <%x>\n"
1114 " next_to_clean <%x>\n"
1115 "buffer_info[next_to_clean]:\n"
1116 " time_stamp <%lx>\n"
1117 " next_to_watch <%x>\n"
1119 " next_to_watch.status <%x>\n"
1122 "PHY 1000BASE-T Status <%x>\n"
1123 "PHY Extended Status <%x>\n"
1124 "PCI Status <%x>\n",
1125 readl(tx_ring
->head
), readl(tx_ring
->tail
), tx_ring
->next_to_use
,
1126 tx_ring
->next_to_clean
, tx_ring
->buffer_info
[eop
].time_stamp
,
1127 eop
, jiffies
, eop_desc
->upper
.fields
.status
, er32(STATUS
),
1128 phy_status
, phy_1000t_status
, phy_ext_status
, pci_status
);
1130 e1000e_dump(adapter
);
1132 /* Suggest workaround for known h/w issue */
1133 if ((hw
->mac
.type
== e1000_pchlan
) && (er32(CTRL
) & E1000_CTRL_TFCE
))
1134 e_err("Try turning off Tx pause (flow control) via ethtool\n");
1138 * e1000e_tx_hwtstamp_work - check for Tx time stamp
1139 * @work: pointer to work struct
1141 * This work function polls the TSYNCTXCTL valid bit to determine when a
1142 * timestamp has been taken for the current stored skb. The timestamp must
1143 * be for this skb because only one such packet is allowed in the queue.
1145 static void e1000e_tx_hwtstamp_work(struct work_struct
*work
)
1147 struct e1000_adapter
*adapter
= container_of(work
, struct e1000_adapter
,
1149 struct e1000_hw
*hw
= &adapter
->hw
;
1151 if (er32(TSYNCTXCTL
) & E1000_TSYNCTXCTL_VALID
) {
1152 struct skb_shared_hwtstamps shhwtstamps
;
1155 txstmp
= er32(TXSTMPL
);
1156 txstmp
|= (u64
)er32(TXSTMPH
) << 32;
1158 e1000e_systim_to_hwtstamp(adapter
, &shhwtstamps
, txstmp
);
1160 skb_tstamp_tx(adapter
->tx_hwtstamp_skb
, &shhwtstamps
);
1161 dev_kfree_skb_any(adapter
->tx_hwtstamp_skb
);
1162 adapter
->tx_hwtstamp_skb
= NULL
;
1163 } else if (time_after(jiffies
, adapter
->tx_hwtstamp_start
1164 + adapter
->tx_timeout_factor
* HZ
)) {
1165 dev_kfree_skb_any(adapter
->tx_hwtstamp_skb
);
1166 adapter
->tx_hwtstamp_skb
= NULL
;
1167 adapter
->tx_hwtstamp_timeouts
++;
1168 e_warn("clearing Tx timestamp hang");
1170 /* reschedule to check later */
1171 schedule_work(&adapter
->tx_hwtstamp_work
);
1176 * e1000_clean_tx_irq - Reclaim resources after transmit completes
1177 * @tx_ring: Tx descriptor ring
1179 * the return value indicates whether actual cleaning was done, there
1180 * is no guarantee that everything was cleaned
1182 static bool e1000_clean_tx_irq(struct e1000_ring
*tx_ring
)
1184 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
1185 struct net_device
*netdev
= adapter
->netdev
;
1186 struct e1000_hw
*hw
= &adapter
->hw
;
1187 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
1188 struct e1000_buffer
*buffer_info
;
1189 unsigned int i
, eop
;
1190 unsigned int count
= 0;
1191 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
1192 unsigned int bytes_compl
= 0, pkts_compl
= 0;
1194 i
= tx_ring
->next_to_clean
;
1195 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1196 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1198 while ((eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
1199 (count
< tx_ring
->count
)) {
1200 bool cleaned
= false;
1201 rmb(); /* read buffer_info after eop_desc */
1202 for (; !cleaned
; count
++) {
1203 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
1204 buffer_info
= &tx_ring
->buffer_info
[i
];
1205 cleaned
= (i
== eop
);
1208 total_tx_packets
+= buffer_info
->segs
;
1209 total_tx_bytes
+= buffer_info
->bytecount
;
1210 if (buffer_info
->skb
) {
1211 bytes_compl
+= buffer_info
->skb
->len
;
1216 e1000_put_txbuf(tx_ring
, buffer_info
);
1217 tx_desc
->upper
.data
= 0;
1220 if (i
== tx_ring
->count
)
1224 if (i
== tx_ring
->next_to_use
)
1226 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1227 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1230 tx_ring
->next_to_clean
= i
;
1232 netdev_completed_queue(netdev
, pkts_compl
, bytes_compl
);
1234 #define TX_WAKE_THRESHOLD 32
1235 if (count
&& netif_carrier_ok(netdev
) &&
1236 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
1237 /* Make sure that anybody stopping the queue after this
1238 * sees the new next_to_clean.
1242 if (netif_queue_stopped(netdev
) &&
1243 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
1244 netif_wake_queue(netdev
);
1245 ++adapter
->restart_queue
;
1249 if (adapter
->detect_tx_hung
) {
1250 /* Detect a transmit hang in hardware, this serializes the
1251 * check with the clearing of time_stamp and movement of i
1253 adapter
->detect_tx_hung
= false;
1254 if (tx_ring
->buffer_info
[i
].time_stamp
&&
1255 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
1256 + (adapter
->tx_timeout_factor
* HZ
)) &&
1257 !(er32(STATUS
) & E1000_STATUS_TXOFF
))
1258 schedule_work(&adapter
->print_hang_task
);
1260 adapter
->tx_hang_recheck
= false;
1262 adapter
->total_tx_bytes
+= total_tx_bytes
;
1263 adapter
->total_tx_packets
+= total_tx_packets
;
1264 return count
< tx_ring
->count
;
1268 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
1269 * @rx_ring: Rx descriptor ring
1271 * the return value indicates whether actual cleaning was done, there
1272 * is no guarantee that everything was cleaned
1274 static bool e1000_clean_rx_irq_ps(struct e1000_ring
*rx_ring
, int *work_done
,
1277 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1278 struct e1000_hw
*hw
= &adapter
->hw
;
1279 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
1280 struct net_device
*netdev
= adapter
->netdev
;
1281 struct pci_dev
*pdev
= adapter
->pdev
;
1282 struct e1000_buffer
*buffer_info
, *next_buffer
;
1283 struct e1000_ps_page
*ps_page
;
1284 struct sk_buff
*skb
;
1286 u32 length
, staterr
;
1287 int cleaned_count
= 0;
1288 bool cleaned
= false;
1289 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
1291 i
= rx_ring
->next_to_clean
;
1292 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
1293 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1294 buffer_info
= &rx_ring
->buffer_info
[i
];
1296 while (staterr
& E1000_RXD_STAT_DD
) {
1297 if (*work_done
>= work_to_do
)
1300 skb
= buffer_info
->skb
;
1301 rmb(); /* read descriptor and rx_buffer_info after status DD */
1303 /* in the packet split case this is header only */
1304 prefetch(skb
->data
- NET_IP_ALIGN
);
1307 if (i
== rx_ring
->count
)
1309 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
1312 next_buffer
= &rx_ring
->buffer_info
[i
];
1316 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1317 adapter
->rx_ps_bsize0
, DMA_FROM_DEVICE
);
1318 buffer_info
->dma
= 0;
1320 /* see !EOP comment in other Rx routine */
1321 if (!(staterr
& E1000_RXD_STAT_EOP
))
1322 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
1324 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
1325 e_dbg("Packet Split buffers didn't pick up the full packet\n");
1326 dev_kfree_skb_irq(skb
);
1327 if (staterr
& E1000_RXD_STAT_EOP
)
1328 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1332 if (unlikely((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
1333 !(netdev
->features
& NETIF_F_RXALL
))) {
1334 dev_kfree_skb_irq(skb
);
1338 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
1341 e_dbg("Last part of the packet spanning multiple descriptors\n");
1342 dev_kfree_skb_irq(skb
);
1347 skb_put(skb
, length
);
1350 /* this looks ugly, but it seems compiler issues make
1351 * it more efficient than reusing j
1353 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
1355 /* page alloc/put takes too long and effects small
1356 * packet throughput, so unsplit small packets and
1357 * save the alloc/put only valid in softirq (napi)
1358 * context to call kmap_*
1360 if (l1
&& (l1
<= copybreak
) &&
1361 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
1364 ps_page
= &buffer_info
->ps_pages
[0];
1366 /* there is no documentation about how to call
1367 * kmap_atomic, so we can't hold the mapping
1370 dma_sync_single_for_cpu(&pdev
->dev
,
1374 vaddr
= kmap_atomic(ps_page
->page
);
1375 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
1376 kunmap_atomic(vaddr
);
1377 dma_sync_single_for_device(&pdev
->dev
,
1382 /* remove the CRC */
1383 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
1384 if (!(netdev
->features
& NETIF_F_RXFCS
))
1393 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1394 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
1398 ps_page
= &buffer_info
->ps_pages
[j
];
1399 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1402 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
1403 ps_page
->page
= NULL
;
1405 skb
->data_len
+= length
;
1406 skb
->truesize
+= PAGE_SIZE
;
1409 /* strip the ethernet crc, problem is we're using pages now so
1410 * this whole operation can get a little cpu intensive
1412 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
1413 if (!(netdev
->features
& NETIF_F_RXFCS
))
1414 pskb_trim(skb
, skb
->len
- 4);
1418 total_rx_bytes
+= skb
->len
;
1421 e1000_rx_checksum(adapter
, staterr
, skb
);
1423 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1425 if (rx_desc
->wb
.upper
.header_status
&
1426 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
1427 adapter
->rx_hdr_split
++;
1429 e1000_receive_skb(adapter
, netdev
, skb
, staterr
,
1430 rx_desc
->wb
.middle
.vlan
);
1433 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
1434 buffer_info
->skb
= NULL
;
1436 /* return some buffers to hardware, one at a time is too slow */
1437 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
1438 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1443 /* use prefetched values */
1445 buffer_info
= next_buffer
;
1447 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1449 rx_ring
->next_to_clean
= i
;
1451 cleaned_count
= e1000_desc_unused(rx_ring
);
1453 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1455 adapter
->total_rx_bytes
+= total_rx_bytes
;
1456 adapter
->total_rx_packets
+= total_rx_packets
;
1461 * e1000_consume_page - helper function
1463 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
1468 skb
->data_len
+= length
;
1469 skb
->truesize
+= PAGE_SIZE
;
1473 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1474 * @adapter: board private structure
1476 * the return value indicates whether actual cleaning was done, there
1477 * is no guarantee that everything was cleaned
1479 static bool e1000_clean_jumbo_rx_irq(struct e1000_ring
*rx_ring
, int *work_done
,
1482 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1483 struct net_device
*netdev
= adapter
->netdev
;
1484 struct pci_dev
*pdev
= adapter
->pdev
;
1485 union e1000_rx_desc_extended
*rx_desc
, *next_rxd
;
1486 struct e1000_buffer
*buffer_info
, *next_buffer
;
1487 u32 length
, staterr
;
1489 int cleaned_count
= 0;
1490 bool cleaned
= false;
1491 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
1492 struct skb_shared_info
*shinfo
;
1494 i
= rx_ring
->next_to_clean
;
1495 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
1496 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1497 buffer_info
= &rx_ring
->buffer_info
[i
];
1499 while (staterr
& E1000_RXD_STAT_DD
) {
1500 struct sk_buff
*skb
;
1502 if (*work_done
>= work_to_do
)
1505 rmb(); /* read descriptor and rx_buffer_info after status DD */
1507 skb
= buffer_info
->skb
;
1508 buffer_info
->skb
= NULL
;
1511 if (i
== rx_ring
->count
)
1513 next_rxd
= E1000_RX_DESC_EXT(*rx_ring
, i
);
1516 next_buffer
= &rx_ring
->buffer_info
[i
];
1520 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
, PAGE_SIZE
,
1522 buffer_info
->dma
= 0;
1524 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
1526 /* errors is only valid for DD + EOP descriptors */
1527 if (unlikely((staterr
& E1000_RXD_STAT_EOP
) &&
1528 ((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
1529 !(netdev
->features
& NETIF_F_RXALL
)))) {
1530 /* recycle both page and skb */
1531 buffer_info
->skb
= skb
;
1532 /* an error means any chain goes out the window too */
1533 if (rx_ring
->rx_skb_top
)
1534 dev_kfree_skb_irq(rx_ring
->rx_skb_top
);
1535 rx_ring
->rx_skb_top
= NULL
;
1538 #define rxtop (rx_ring->rx_skb_top)
1539 if (!(staterr
& E1000_RXD_STAT_EOP
)) {
1540 /* this descriptor is only the beginning (or middle) */
1542 /* this is the beginning of a chain */
1544 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
1547 /* this is the middle of a chain */
1548 shinfo
= skb_shinfo(rxtop
);
1549 skb_fill_page_desc(rxtop
, shinfo
->nr_frags
,
1550 buffer_info
->page
, 0,
1552 /* re-use the skb, only consumed the page */
1553 buffer_info
->skb
= skb
;
1555 e1000_consume_page(buffer_info
, rxtop
, length
);
1559 /* end of the chain */
1560 shinfo
= skb_shinfo(rxtop
);
1561 skb_fill_page_desc(rxtop
, shinfo
->nr_frags
,
1562 buffer_info
->page
, 0,
1564 /* re-use the current skb, we only consumed the
1567 buffer_info
->skb
= skb
;
1570 e1000_consume_page(buffer_info
, skb
, length
);
1572 /* no chain, got EOP, this buf is the packet
1573 * copybreak to save the put_page/alloc_page
1575 if (length
<= copybreak
&&
1576 skb_tailroom(skb
) >= length
) {
1578 vaddr
= kmap_atomic(buffer_info
->page
);
1579 memcpy(skb_tail_pointer(skb
), vaddr
,
1581 kunmap_atomic(vaddr
);
1582 /* re-use the page, so don't erase
1585 skb_put(skb
, length
);
1587 skb_fill_page_desc(skb
, 0,
1588 buffer_info
->page
, 0,
1590 e1000_consume_page(buffer_info
, skb
,
1596 /* Receive Checksum Offload */
1597 e1000_rx_checksum(adapter
, staterr
, skb
);
1599 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1601 /* probably a little skewed due to removing CRC */
1602 total_rx_bytes
+= skb
->len
;
1605 /* eth type trans needs skb->data to point to something */
1606 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1607 e_err("pskb_may_pull failed.\n");
1608 dev_kfree_skb_irq(skb
);
1612 e1000_receive_skb(adapter
, netdev
, skb
, staterr
,
1613 rx_desc
->wb
.upper
.vlan
);
1616 rx_desc
->wb
.upper
.status_error
&= cpu_to_le32(~0xFF);
1618 /* return some buffers to hardware, one at a time is too slow */
1619 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1620 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1625 /* use prefetched values */
1627 buffer_info
= next_buffer
;
1629 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1631 rx_ring
->next_to_clean
= i
;
1633 cleaned_count
= e1000_desc_unused(rx_ring
);
1635 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1637 adapter
->total_rx_bytes
+= total_rx_bytes
;
1638 adapter
->total_rx_packets
+= total_rx_packets
;
1643 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1644 * @rx_ring: Rx descriptor ring
1646 static void e1000_clean_rx_ring(struct e1000_ring
*rx_ring
)
1648 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1649 struct e1000_buffer
*buffer_info
;
1650 struct e1000_ps_page
*ps_page
;
1651 struct pci_dev
*pdev
= adapter
->pdev
;
1654 /* Free all the Rx ring sk_buffs */
1655 for (i
= 0; i
< rx_ring
->count
; i
++) {
1656 buffer_info
= &rx_ring
->buffer_info
[i
];
1657 if (buffer_info
->dma
) {
1658 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1659 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1660 adapter
->rx_buffer_len
,
1662 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1663 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
,
1664 PAGE_SIZE
, DMA_FROM_DEVICE
);
1665 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1666 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1667 adapter
->rx_ps_bsize0
,
1669 buffer_info
->dma
= 0;
1672 if (buffer_info
->page
) {
1673 put_page(buffer_info
->page
);
1674 buffer_info
->page
= NULL
;
1677 if (buffer_info
->skb
) {
1678 dev_kfree_skb(buffer_info
->skb
);
1679 buffer_info
->skb
= NULL
;
1682 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1683 ps_page
= &buffer_info
->ps_pages
[j
];
1686 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1689 put_page(ps_page
->page
);
1690 ps_page
->page
= NULL
;
1694 /* there also may be some cached data from a chained receive */
1695 if (rx_ring
->rx_skb_top
) {
1696 dev_kfree_skb(rx_ring
->rx_skb_top
);
1697 rx_ring
->rx_skb_top
= NULL
;
1700 /* Zero out the descriptor ring */
1701 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1703 rx_ring
->next_to_clean
= 0;
1704 rx_ring
->next_to_use
= 0;
1705 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1707 writel(0, rx_ring
->head
);
1708 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
1709 e1000e_update_rdt_wa(rx_ring
, 0);
1711 writel(0, rx_ring
->tail
);
1714 static void e1000e_downshift_workaround(struct work_struct
*work
)
1716 struct e1000_adapter
*adapter
= container_of(work
,
1717 struct e1000_adapter
,
1720 if (test_bit(__E1000_DOWN
, &adapter
->state
))
1723 e1000e_gig_downshift_workaround_ich8lan(&adapter
->hw
);
1727 * e1000_intr_msi - Interrupt Handler
1728 * @irq: interrupt number
1729 * @data: pointer to a network interface device structure
1731 static irqreturn_t
e1000_intr_msi(int __always_unused irq
, void *data
)
1733 struct net_device
*netdev
= data
;
1734 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1735 struct e1000_hw
*hw
= &adapter
->hw
;
1736 u32 icr
= er32(ICR
);
1738 /* read ICR disables interrupts using IAM */
1739 if (icr
& E1000_ICR_LSC
) {
1740 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
);
1748 /* 80003ES2LAN workaround-- For packet buffer work-around on
1749 * link down event; disable receives here in the ISR and reset
1750 * adapter in watchdog
1752 if (netif_carrier_ok(netdev
) &&
1753 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1754 /* disable receives */
1755 u32 rctl
= er32(RCTL
);
1756 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1757 adapter
->flags
|= FLAG_RESTART_NOW
;
1759 /* guard against interrupt when we're going down */
1760 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1761 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1764 /* Reset on uncorrectable ECC error */
1765 if ((icr
& E1000_ICR_ECCER
) && (hw
->mac
.type
== e1000_pch_lpt
)) {
1766 u32 pbeccsts
= er32(PBECCSTS
);
1768 adapter
->corr_errors
+=
1769 pbeccsts
& E1000_PBECCSTS_CORR_ERR_CNT_MASK
;
1770 adapter
->uncorr_errors
+=
1771 (pbeccsts
& E1000_PBECCSTS_UNCORR_ERR_CNT_MASK
) >>
1772 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT
;
1774 /* Do the reset outside of interrupt context */
1775 schedule_work(&adapter
->reset_task
);
1777 /* return immediately since reset is imminent */
1781 if (napi_schedule_prep(&adapter
->napi
)) {
1782 adapter
->total_tx_bytes
= 0;
1783 adapter
->total_tx_packets
= 0;
1784 adapter
->total_rx_bytes
= 0;
1785 adapter
->total_rx_packets
= 0;
1786 __napi_schedule(&adapter
->napi
);
1793 * e1000_intr - Interrupt Handler
1794 * @irq: interrupt number
1795 * @data: pointer to a network interface device structure
1797 static irqreturn_t
e1000_intr(int __always_unused irq
, void *data
)
1799 struct net_device
*netdev
= data
;
1800 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1801 struct e1000_hw
*hw
= &adapter
->hw
;
1802 u32 rctl
, icr
= er32(ICR
);
1804 if (!icr
|| test_bit(__E1000_DOWN
, &adapter
->state
))
1805 return IRQ_NONE
; /* Not our interrupt */
1807 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1808 * not set, then the adapter didn't send an interrupt
1810 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1813 /* Interrupt Auto-Mask...upon reading ICR,
1814 * interrupts are masked. No need for the
1818 if (icr
& E1000_ICR_LSC
) {
1819 hw
->mac
.get_link_status
= true;
1820 /* ICH8 workaround-- Call gig speed drop workaround on cable
1821 * disconnect (LSC) before accessing any PHY registers
1823 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1824 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1825 schedule_work(&adapter
->downshift_task
);
1827 /* 80003ES2LAN workaround--
1828 * For packet buffer work-around on link down event;
1829 * disable receives here in the ISR and
1830 * reset adapter in watchdog
1832 if (netif_carrier_ok(netdev
) &&
1833 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1834 /* disable receives */
1836 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1837 adapter
->flags
|= FLAG_RESTART_NOW
;
1839 /* guard against interrupt when we're going down */
1840 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1841 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1844 /* Reset on uncorrectable ECC error */
1845 if ((icr
& E1000_ICR_ECCER
) && (hw
->mac
.type
== e1000_pch_lpt
)) {
1846 u32 pbeccsts
= er32(PBECCSTS
);
1848 adapter
->corr_errors
+=
1849 pbeccsts
& E1000_PBECCSTS_CORR_ERR_CNT_MASK
;
1850 adapter
->uncorr_errors
+=
1851 (pbeccsts
& E1000_PBECCSTS_UNCORR_ERR_CNT_MASK
) >>
1852 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT
;
1854 /* Do the reset outside of interrupt context */
1855 schedule_work(&adapter
->reset_task
);
1857 /* return immediately since reset is imminent */
1861 if (napi_schedule_prep(&adapter
->napi
)) {
1862 adapter
->total_tx_bytes
= 0;
1863 adapter
->total_tx_packets
= 0;
1864 adapter
->total_rx_bytes
= 0;
1865 adapter
->total_rx_packets
= 0;
1866 __napi_schedule(&adapter
->napi
);
1872 static irqreturn_t
e1000_msix_other(int __always_unused irq
, void *data
)
1874 struct net_device
*netdev
= data
;
1875 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1876 struct e1000_hw
*hw
= &adapter
->hw
;
1877 u32 icr
= er32(ICR
);
1879 if (!(icr
& E1000_ICR_INT_ASSERTED
)) {
1880 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1881 ew32(IMS
, E1000_IMS_OTHER
);
1885 if (icr
& adapter
->eiac_mask
)
1886 ew32(ICS
, (icr
& adapter
->eiac_mask
));
1888 if (icr
& E1000_ICR_OTHER
) {
1889 if (!(icr
& E1000_ICR_LSC
))
1890 goto no_link_interrupt
;
1891 hw
->mac
.get_link_status
= true;
1892 /* guard against interrupt when we're going down */
1893 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1894 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1898 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1899 ew32(IMS
, E1000_IMS_LSC
| E1000_IMS_OTHER
);
1904 static irqreturn_t
e1000_intr_msix_tx(int __always_unused irq
, void *data
)
1906 struct net_device
*netdev
= data
;
1907 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1908 struct e1000_hw
*hw
= &adapter
->hw
;
1909 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1911 adapter
->total_tx_bytes
= 0;
1912 adapter
->total_tx_packets
= 0;
1914 if (!e1000_clean_tx_irq(tx_ring
))
1915 /* Ring was not completely cleaned, so fire another interrupt */
1916 ew32(ICS
, tx_ring
->ims_val
);
1921 static irqreturn_t
e1000_intr_msix_rx(int __always_unused irq
, void *data
)
1923 struct net_device
*netdev
= data
;
1924 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1925 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1927 /* Write the ITR value calculated at the end of the
1928 * previous interrupt.
1930 if (rx_ring
->set_itr
) {
1931 writel(1000000000 / (rx_ring
->itr_val
* 256),
1932 rx_ring
->itr_register
);
1933 rx_ring
->set_itr
= 0;
1936 if (napi_schedule_prep(&adapter
->napi
)) {
1937 adapter
->total_rx_bytes
= 0;
1938 adapter
->total_rx_packets
= 0;
1939 __napi_schedule(&adapter
->napi
);
1945 * e1000_configure_msix - Configure MSI-X hardware
1947 * e1000_configure_msix sets up the hardware to properly
1948 * generate MSI-X interrupts.
1950 static void e1000_configure_msix(struct e1000_adapter
*adapter
)
1952 struct e1000_hw
*hw
= &adapter
->hw
;
1953 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1954 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1956 u32 ctrl_ext
, ivar
= 0;
1958 adapter
->eiac_mask
= 0;
1960 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1961 if (hw
->mac
.type
== e1000_82574
) {
1962 u32 rfctl
= er32(RFCTL
);
1963 rfctl
|= E1000_RFCTL_ACK_DIS
;
1967 /* Configure Rx vector */
1968 rx_ring
->ims_val
= E1000_IMS_RXQ0
;
1969 adapter
->eiac_mask
|= rx_ring
->ims_val
;
1970 if (rx_ring
->itr_val
)
1971 writel(1000000000 / (rx_ring
->itr_val
* 256),
1972 rx_ring
->itr_register
);
1974 writel(1, rx_ring
->itr_register
);
1975 ivar
= E1000_IVAR_INT_ALLOC_VALID
| vector
;
1977 /* Configure Tx vector */
1978 tx_ring
->ims_val
= E1000_IMS_TXQ0
;
1980 if (tx_ring
->itr_val
)
1981 writel(1000000000 / (tx_ring
->itr_val
* 256),
1982 tx_ring
->itr_register
);
1984 writel(1, tx_ring
->itr_register
);
1985 adapter
->eiac_mask
|= tx_ring
->ims_val
;
1986 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 8);
1988 /* set vector for Other Causes, e.g. link changes */
1990 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 16);
1991 if (rx_ring
->itr_val
)
1992 writel(1000000000 / (rx_ring
->itr_val
* 256),
1993 hw
->hw_addr
+ E1000_EITR_82574(vector
));
1995 writel(1, hw
->hw_addr
+ E1000_EITR_82574(vector
));
1997 /* Cause Tx interrupts on every write back */
2002 /* enable MSI-X PBA support */
2003 ctrl_ext
= er32(CTRL_EXT
);
2004 ctrl_ext
|= E1000_CTRL_EXT_PBA_CLR
;
2006 /* Auto-Mask Other interrupts upon ICR read */
2007 ew32(IAM
, ~E1000_EIAC_MASK_82574
| E1000_IMS_OTHER
);
2008 ctrl_ext
|= E1000_CTRL_EXT_EIAME
;
2009 ew32(CTRL_EXT
, ctrl_ext
);
2013 void e1000e_reset_interrupt_capability(struct e1000_adapter
*adapter
)
2015 if (adapter
->msix_entries
) {
2016 pci_disable_msix(adapter
->pdev
);
2017 kfree(adapter
->msix_entries
);
2018 adapter
->msix_entries
= NULL
;
2019 } else if (adapter
->flags
& FLAG_MSI_ENABLED
) {
2020 pci_disable_msi(adapter
->pdev
);
2021 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
2026 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
2028 * Attempt to configure interrupts using the best available
2029 * capabilities of the hardware and kernel.
2031 void e1000e_set_interrupt_capability(struct e1000_adapter
*adapter
)
2036 switch (adapter
->int_mode
) {
2037 case E1000E_INT_MODE_MSIX
:
2038 if (adapter
->flags
& FLAG_HAS_MSIX
) {
2039 adapter
->num_vectors
= 3; /* RxQ0, TxQ0 and other */
2040 adapter
->msix_entries
= kcalloc(adapter
->num_vectors
,
2044 if (adapter
->msix_entries
) {
2045 struct e1000_adapter
*a
= adapter
;
2047 for (i
= 0; i
< adapter
->num_vectors
; i
++)
2048 adapter
->msix_entries
[i
].entry
= i
;
2050 err
= pci_enable_msix_range(a
->pdev
,
2057 /* MSI-X failed, so fall through and try MSI */
2058 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n");
2059 e1000e_reset_interrupt_capability(adapter
);
2061 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
2063 case E1000E_INT_MODE_MSI
:
2064 if (!pci_enable_msi(adapter
->pdev
)) {
2065 adapter
->flags
|= FLAG_MSI_ENABLED
;
2067 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
2068 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n");
2071 case E1000E_INT_MODE_LEGACY
:
2072 /* Don't do anything; this is the system default */
2076 /* store the number of vectors being used */
2077 adapter
->num_vectors
= 1;
2081 * e1000_request_msix - Initialize MSI-X interrupts
2083 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
2086 static int e1000_request_msix(struct e1000_adapter
*adapter
)
2088 struct net_device
*netdev
= adapter
->netdev
;
2089 int err
= 0, vector
= 0;
2091 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
2092 snprintf(adapter
->rx_ring
->name
,
2093 sizeof(adapter
->rx_ring
->name
) - 1,
2094 "%s-rx-0", netdev
->name
);
2096 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
2097 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2098 e1000_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
2102 adapter
->rx_ring
->itr_register
= adapter
->hw
.hw_addr
+
2103 E1000_EITR_82574(vector
);
2104 adapter
->rx_ring
->itr_val
= adapter
->itr
;
2107 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
2108 snprintf(adapter
->tx_ring
->name
,
2109 sizeof(adapter
->tx_ring
->name
) - 1,
2110 "%s-tx-0", netdev
->name
);
2112 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
2113 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2114 e1000_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
2118 adapter
->tx_ring
->itr_register
= adapter
->hw
.hw_addr
+
2119 E1000_EITR_82574(vector
);
2120 adapter
->tx_ring
->itr_val
= adapter
->itr
;
2123 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2124 e1000_msix_other
, 0, netdev
->name
, netdev
);
2128 e1000_configure_msix(adapter
);
2134 * e1000_request_irq - initialize interrupts
2136 * Attempts to configure interrupts using the best available
2137 * capabilities of the hardware and kernel.
2139 static int e1000_request_irq(struct e1000_adapter
*adapter
)
2141 struct net_device
*netdev
= adapter
->netdev
;
2144 if (adapter
->msix_entries
) {
2145 err
= e1000_request_msix(adapter
);
2148 /* fall back to MSI */
2149 e1000e_reset_interrupt_capability(adapter
);
2150 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
2151 e1000e_set_interrupt_capability(adapter
);
2153 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
2154 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi
, 0,
2155 netdev
->name
, netdev
);
2159 /* fall back to legacy interrupt */
2160 e1000e_reset_interrupt_capability(adapter
);
2161 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
2164 err
= request_irq(adapter
->pdev
->irq
, e1000_intr
, IRQF_SHARED
,
2165 netdev
->name
, netdev
);
2167 e_err("Unable to allocate interrupt, Error: %d\n", err
);
2172 static void e1000_free_irq(struct e1000_adapter
*adapter
)
2174 struct net_device
*netdev
= adapter
->netdev
;
2176 if (adapter
->msix_entries
) {
2179 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2182 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2185 /* Other Causes interrupt vector */
2186 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2190 free_irq(adapter
->pdev
->irq
, netdev
);
2194 * e1000_irq_disable - Mask off interrupt generation on the NIC
2196 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
2198 struct e1000_hw
*hw
= &adapter
->hw
;
2201 if (adapter
->msix_entries
)
2202 ew32(EIAC_82574
, 0);
2205 if (adapter
->msix_entries
) {
2207 for (i
= 0; i
< adapter
->num_vectors
; i
++)
2208 synchronize_irq(adapter
->msix_entries
[i
].vector
);
2210 synchronize_irq(adapter
->pdev
->irq
);
2215 * e1000_irq_enable - Enable default interrupt generation settings
2217 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
2219 struct e1000_hw
*hw
= &adapter
->hw
;
2221 if (adapter
->msix_entries
) {
2222 ew32(EIAC_82574
, adapter
->eiac_mask
& E1000_EIAC_MASK_82574
);
2223 ew32(IMS
, adapter
->eiac_mask
| E1000_IMS_OTHER
| E1000_IMS_LSC
);
2224 } else if (hw
->mac
.type
== e1000_pch_lpt
) {
2225 ew32(IMS
, IMS_ENABLE_MASK
| E1000_IMS_ECCER
);
2227 ew32(IMS
, IMS_ENABLE_MASK
);
2233 * e1000e_get_hw_control - get control of the h/w from f/w
2234 * @adapter: address of board private structure
2236 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2237 * For ASF and Pass Through versions of f/w this means that
2238 * the driver is loaded. For AMT version (only with 82573)
2239 * of the f/w this means that the network i/f is open.
2241 void e1000e_get_hw_control(struct e1000_adapter
*adapter
)
2243 struct e1000_hw
*hw
= &adapter
->hw
;
2247 /* Let firmware know the driver has taken over */
2248 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2250 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
2251 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2252 ctrl_ext
= er32(CTRL_EXT
);
2253 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
2258 * e1000e_release_hw_control - release control of the h/w to f/w
2259 * @adapter: address of board private structure
2261 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2262 * For ASF and Pass Through versions of f/w this means that the
2263 * driver is no longer loaded. For AMT version (only with 82573) i
2264 * of the f/w this means that the network i/f is closed.
2267 void e1000e_release_hw_control(struct e1000_adapter
*adapter
)
2269 struct e1000_hw
*hw
= &adapter
->hw
;
2273 /* Let firmware taken over control of h/w */
2274 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2276 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
2277 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2278 ctrl_ext
= er32(CTRL_EXT
);
2279 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
2284 * e1000_alloc_ring_dma - allocate memory for a ring structure
2286 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
2287 struct e1000_ring
*ring
)
2289 struct pci_dev
*pdev
= adapter
->pdev
;
2291 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
2300 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
2301 * @tx_ring: Tx descriptor ring
2303 * Return 0 on success, negative on failure
2305 int e1000e_setup_tx_resources(struct e1000_ring
*tx_ring
)
2307 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2308 int err
= -ENOMEM
, size
;
2310 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2311 tx_ring
->buffer_info
= vzalloc(size
);
2312 if (!tx_ring
->buffer_info
)
2315 /* round up to nearest 4K */
2316 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2317 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
2319 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
2323 tx_ring
->next_to_use
= 0;
2324 tx_ring
->next_to_clean
= 0;
2328 vfree(tx_ring
->buffer_info
);
2329 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2334 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
2335 * @rx_ring: Rx descriptor ring
2337 * Returns 0 on success, negative on failure
2339 int e1000e_setup_rx_resources(struct e1000_ring
*rx_ring
)
2341 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
2342 struct e1000_buffer
*buffer_info
;
2343 int i
, size
, desc_len
, err
= -ENOMEM
;
2345 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2346 rx_ring
->buffer_info
= vzalloc(size
);
2347 if (!rx_ring
->buffer_info
)
2350 for (i
= 0; i
< rx_ring
->count
; i
++) {
2351 buffer_info
= &rx_ring
->buffer_info
[i
];
2352 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
2353 sizeof(struct e1000_ps_page
),
2355 if (!buffer_info
->ps_pages
)
2359 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
2361 /* Round up to nearest 4K */
2362 rx_ring
->size
= rx_ring
->count
* desc_len
;
2363 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
2365 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
2369 rx_ring
->next_to_clean
= 0;
2370 rx_ring
->next_to_use
= 0;
2371 rx_ring
->rx_skb_top
= NULL
;
2376 for (i
= 0; i
< rx_ring
->count
; i
++) {
2377 buffer_info
= &rx_ring
->buffer_info
[i
];
2378 kfree(buffer_info
->ps_pages
);
2381 vfree(rx_ring
->buffer_info
);
2382 e_err("Unable to allocate memory for the receive descriptor ring\n");
2387 * e1000_clean_tx_ring - Free Tx Buffers
2388 * @tx_ring: Tx descriptor ring
2390 static void e1000_clean_tx_ring(struct e1000_ring
*tx_ring
)
2392 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2393 struct e1000_buffer
*buffer_info
;
2397 for (i
= 0; i
< tx_ring
->count
; i
++) {
2398 buffer_info
= &tx_ring
->buffer_info
[i
];
2399 e1000_put_txbuf(tx_ring
, buffer_info
);
2402 netdev_reset_queue(adapter
->netdev
);
2403 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2404 memset(tx_ring
->buffer_info
, 0, size
);
2406 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2408 tx_ring
->next_to_use
= 0;
2409 tx_ring
->next_to_clean
= 0;
2411 writel(0, tx_ring
->head
);
2412 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
2413 e1000e_update_tdt_wa(tx_ring
, 0);
2415 writel(0, tx_ring
->tail
);
2419 * e1000e_free_tx_resources - Free Tx Resources per Queue
2420 * @tx_ring: Tx descriptor ring
2422 * Free all transmit software resources
2424 void e1000e_free_tx_resources(struct e1000_ring
*tx_ring
)
2426 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2427 struct pci_dev
*pdev
= adapter
->pdev
;
2429 e1000_clean_tx_ring(tx_ring
);
2431 vfree(tx_ring
->buffer_info
);
2432 tx_ring
->buffer_info
= NULL
;
2434 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
2436 tx_ring
->desc
= NULL
;
2440 * e1000e_free_rx_resources - Free Rx Resources
2441 * @rx_ring: Rx descriptor ring
2443 * Free all receive software resources
2445 void e1000e_free_rx_resources(struct e1000_ring
*rx_ring
)
2447 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
2448 struct pci_dev
*pdev
= adapter
->pdev
;
2451 e1000_clean_rx_ring(rx_ring
);
2453 for (i
= 0; i
< rx_ring
->count
; i
++)
2454 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
2456 vfree(rx_ring
->buffer_info
);
2457 rx_ring
->buffer_info
= NULL
;
2459 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
2461 rx_ring
->desc
= NULL
;
2465 * e1000_update_itr - update the dynamic ITR value based on statistics
2466 * @adapter: pointer to adapter
2467 * @itr_setting: current adapter->itr
2468 * @packets: the number of packets during this measurement interval
2469 * @bytes: the number of bytes during this measurement interval
2471 * Stores a new ITR value based on packets and byte
2472 * counts during the last interrupt. The advantage of per interrupt
2473 * computation is faster updates and more accurate ITR for the current
2474 * traffic pattern. Constants in this function were computed
2475 * based on theoretical maximum wire speed and thresholds were set based
2476 * on testing data as well as attempting to minimize response time
2477 * while increasing bulk throughput. This functionality is controlled
2478 * by the InterruptThrottleRate module parameter.
2480 static unsigned int e1000_update_itr(u16 itr_setting
, int packets
, int bytes
)
2482 unsigned int retval
= itr_setting
;
2487 switch (itr_setting
) {
2488 case lowest_latency
:
2489 /* handle TSO and jumbo frames */
2490 if (bytes
/ packets
> 8000)
2491 retval
= bulk_latency
;
2492 else if ((packets
< 5) && (bytes
> 512))
2493 retval
= low_latency
;
2495 case low_latency
: /* 50 usec aka 20000 ints/s */
2496 if (bytes
> 10000) {
2497 /* this if handles the TSO accounting */
2498 if (bytes
/ packets
> 8000)
2499 retval
= bulk_latency
;
2500 else if ((packets
< 10) || ((bytes
/ packets
) > 1200))
2501 retval
= bulk_latency
;
2502 else if ((packets
> 35))
2503 retval
= lowest_latency
;
2504 } else if (bytes
/ packets
> 2000) {
2505 retval
= bulk_latency
;
2506 } else if (packets
<= 2 && bytes
< 512) {
2507 retval
= lowest_latency
;
2510 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2511 if (bytes
> 25000) {
2513 retval
= low_latency
;
2514 } else if (bytes
< 6000) {
2515 retval
= low_latency
;
2523 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2526 u32 new_itr
= adapter
->itr
;
2528 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2529 if (adapter
->link_speed
!= SPEED_1000
) {
2535 if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
2540 adapter
->tx_itr
= e1000_update_itr(adapter
->tx_itr
,
2541 adapter
->total_tx_packets
,
2542 adapter
->total_tx_bytes
);
2543 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2544 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
2545 adapter
->tx_itr
= low_latency
;
2547 adapter
->rx_itr
= e1000_update_itr(adapter
->rx_itr
,
2548 adapter
->total_rx_packets
,
2549 adapter
->total_rx_bytes
);
2550 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2551 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2552 adapter
->rx_itr
= low_latency
;
2554 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2556 /* counts and packets in update_itr are dependent on these numbers */
2557 switch (current_itr
) {
2558 case lowest_latency
:
2562 new_itr
= 20000; /* aka hwitr = ~200 */
2572 if (new_itr
!= adapter
->itr
) {
2573 /* this attempts to bias the interrupt rate towards Bulk
2574 * by adding intermediate steps when interrupt rate is
2577 new_itr
= new_itr
> adapter
->itr
?
2578 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) : new_itr
;
2579 adapter
->itr
= new_itr
;
2580 adapter
->rx_ring
->itr_val
= new_itr
;
2581 if (adapter
->msix_entries
)
2582 adapter
->rx_ring
->set_itr
= 1;
2584 e1000e_write_itr(adapter
, new_itr
);
2589 * e1000e_write_itr - write the ITR value to the appropriate registers
2590 * @adapter: address of board private structure
2591 * @itr: new ITR value to program
2593 * e1000e_write_itr determines if the adapter is in MSI-X mode
2594 * and, if so, writes the EITR registers with the ITR value.
2595 * Otherwise, it writes the ITR value into the ITR register.
2597 void e1000e_write_itr(struct e1000_adapter
*adapter
, u32 itr
)
2599 struct e1000_hw
*hw
= &adapter
->hw
;
2600 u32 new_itr
= itr
? 1000000000 / (itr
* 256) : 0;
2602 if (adapter
->msix_entries
) {
2605 for (vector
= 0; vector
< adapter
->num_vectors
; vector
++)
2606 writel(new_itr
, hw
->hw_addr
+ E1000_EITR_82574(vector
));
2613 * e1000_alloc_queues - Allocate memory for all rings
2614 * @adapter: board private structure to initialize
2616 static int e1000_alloc_queues(struct e1000_adapter
*adapter
)
2618 int size
= sizeof(struct e1000_ring
);
2620 adapter
->tx_ring
= kzalloc(size
, GFP_KERNEL
);
2621 if (!adapter
->tx_ring
)
2623 adapter
->tx_ring
->count
= adapter
->tx_ring_count
;
2624 adapter
->tx_ring
->adapter
= adapter
;
2626 adapter
->rx_ring
= kzalloc(size
, GFP_KERNEL
);
2627 if (!adapter
->rx_ring
)
2629 adapter
->rx_ring
->count
= adapter
->rx_ring_count
;
2630 adapter
->rx_ring
->adapter
= adapter
;
2634 e_err("Unable to allocate memory for queues\n");
2635 kfree(adapter
->rx_ring
);
2636 kfree(adapter
->tx_ring
);
2641 * e1000e_poll - NAPI Rx polling callback
2642 * @napi: struct associated with this polling callback
2643 * @weight: number of packets driver is allowed to process this poll
2645 static int e1000e_poll(struct napi_struct
*napi
, int weight
)
2647 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
,
2649 struct e1000_hw
*hw
= &adapter
->hw
;
2650 struct net_device
*poll_dev
= adapter
->netdev
;
2651 int tx_cleaned
= 1, work_done
= 0;
2653 adapter
= netdev_priv(poll_dev
);
2655 if (!adapter
->msix_entries
||
2656 (adapter
->rx_ring
->ims_val
& adapter
->tx_ring
->ims_val
))
2657 tx_cleaned
= e1000_clean_tx_irq(adapter
->tx_ring
);
2659 adapter
->clean_rx(adapter
->rx_ring
, &work_done
, weight
);
2664 /* If weight not fully consumed, exit the polling mode */
2665 if (work_done
< weight
) {
2666 if (adapter
->itr_setting
& 3)
2667 e1000_set_itr(adapter
);
2668 napi_complete(napi
);
2669 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
2670 if (adapter
->msix_entries
)
2671 ew32(IMS
, adapter
->rx_ring
->ims_val
);
2673 e1000_irq_enable(adapter
);
2680 static int e1000_vlan_rx_add_vid(struct net_device
*netdev
,
2681 __always_unused __be16 proto
, u16 vid
)
2683 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2684 struct e1000_hw
*hw
= &adapter
->hw
;
2687 /* don't update vlan cookie if already programmed */
2688 if ((adapter
->hw
.mng_cookie
.status
&
2689 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2690 (vid
== adapter
->mng_vlan_id
))
2693 /* add VID to filter table */
2694 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2695 index
= (vid
>> 5) & 0x7F;
2696 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2697 vfta
|= (1 << (vid
& 0x1F));
2698 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2701 set_bit(vid
, adapter
->active_vlans
);
2706 static int e1000_vlan_rx_kill_vid(struct net_device
*netdev
,
2707 __always_unused __be16 proto
, u16 vid
)
2709 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2710 struct e1000_hw
*hw
= &adapter
->hw
;
2713 if ((adapter
->hw
.mng_cookie
.status
&
2714 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2715 (vid
== adapter
->mng_vlan_id
)) {
2716 /* release control to f/w */
2717 e1000e_release_hw_control(adapter
);
2721 /* remove VID from filter table */
2722 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2723 index
= (vid
>> 5) & 0x7F;
2724 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2725 vfta
&= ~(1 << (vid
& 0x1F));
2726 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2729 clear_bit(vid
, adapter
->active_vlans
);
2735 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
2736 * @adapter: board private structure to initialize
2738 static void e1000e_vlan_filter_disable(struct e1000_adapter
*adapter
)
2740 struct net_device
*netdev
= adapter
->netdev
;
2741 struct e1000_hw
*hw
= &adapter
->hw
;
2744 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2745 /* disable VLAN receive filtering */
2747 rctl
&= ~(E1000_RCTL_VFE
| E1000_RCTL_CFIEN
);
2750 if (adapter
->mng_vlan_id
!= (u16
)E1000_MNG_VLAN_NONE
) {
2751 e1000_vlan_rx_kill_vid(netdev
, htons(ETH_P_8021Q
),
2752 adapter
->mng_vlan_id
);
2753 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2759 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
2760 * @adapter: board private structure to initialize
2762 static void e1000e_vlan_filter_enable(struct e1000_adapter
*adapter
)
2764 struct e1000_hw
*hw
= &adapter
->hw
;
2767 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2768 /* enable VLAN receive filtering */
2770 rctl
|= E1000_RCTL_VFE
;
2771 rctl
&= ~E1000_RCTL_CFIEN
;
2777 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping
2778 * @adapter: board private structure to initialize
2780 static void e1000e_vlan_strip_disable(struct e1000_adapter
*adapter
)
2782 struct e1000_hw
*hw
= &adapter
->hw
;
2785 /* disable VLAN tag insert/strip */
2787 ctrl
&= ~E1000_CTRL_VME
;
2792 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
2793 * @adapter: board private structure to initialize
2795 static void e1000e_vlan_strip_enable(struct e1000_adapter
*adapter
)
2797 struct e1000_hw
*hw
= &adapter
->hw
;
2800 /* enable VLAN tag insert/strip */
2802 ctrl
|= E1000_CTRL_VME
;
2806 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
2808 struct net_device
*netdev
= adapter
->netdev
;
2809 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
2810 u16 old_vid
= adapter
->mng_vlan_id
;
2812 if (adapter
->hw
.mng_cookie
.status
& E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
2813 e1000_vlan_rx_add_vid(netdev
, htons(ETH_P_8021Q
), vid
);
2814 adapter
->mng_vlan_id
= vid
;
2817 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) && (vid
!= old_vid
))
2818 e1000_vlan_rx_kill_vid(netdev
, htons(ETH_P_8021Q
), old_vid
);
2821 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
2825 e1000_vlan_rx_add_vid(adapter
->netdev
, htons(ETH_P_8021Q
), 0);
2827 for_each_set_bit(vid
, adapter
->active_vlans
, VLAN_N_VID
)
2828 e1000_vlan_rx_add_vid(adapter
->netdev
, htons(ETH_P_8021Q
), vid
);
2831 static void e1000_init_manageability_pt(struct e1000_adapter
*adapter
)
2833 struct e1000_hw
*hw
= &adapter
->hw
;
2834 u32 manc
, manc2h
, mdef
, i
, j
;
2836 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
2841 /* enable receiving management packets to the host. this will probably
2842 * generate destination unreachable messages from the host OS, but
2843 * the packets will be handled on SMBUS
2845 manc
|= E1000_MANC_EN_MNG2HOST
;
2846 manc2h
= er32(MANC2H
);
2848 switch (hw
->mac
.type
) {
2850 manc2h
|= (E1000_MANC2H_PORT_623
| E1000_MANC2H_PORT_664
);
2854 /* Check if IPMI pass-through decision filter already exists;
2857 for (i
= 0, j
= 0; i
< 8; i
++) {
2858 mdef
= er32(MDEF(i
));
2860 /* Ignore filters with anything other than IPMI ports */
2861 if (mdef
& ~(E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2864 /* Enable this decision filter in MANC2H */
2871 if (j
== (E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2874 /* Create new decision filter in an empty filter */
2875 for (i
= 0, j
= 0; i
< 8; i
++)
2876 if (er32(MDEF(i
)) == 0) {
2877 ew32(MDEF(i
), (E1000_MDEF_PORT_623
|
2878 E1000_MDEF_PORT_664
));
2885 e_warn("Unable to create IPMI pass-through filter\n");
2889 ew32(MANC2H
, manc2h
);
2894 * e1000_configure_tx - Configure Transmit Unit after Reset
2895 * @adapter: board private structure
2897 * Configure the Tx unit of the MAC after a reset.
2899 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
2901 struct e1000_hw
*hw
= &adapter
->hw
;
2902 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2904 u32 tdlen
, tctl
, tarc
;
2906 /* Setup the HW Tx Head and Tail descriptor pointers */
2907 tdba
= tx_ring
->dma
;
2908 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2909 ew32(TDBAL(0), (tdba
& DMA_BIT_MASK(32)));
2910 ew32(TDBAH(0), (tdba
>> 32));
2911 ew32(TDLEN(0), tdlen
);
2914 tx_ring
->head
= adapter
->hw
.hw_addr
+ E1000_TDH(0);
2915 tx_ring
->tail
= adapter
->hw
.hw_addr
+ E1000_TDT(0);
2917 /* Set the Tx Interrupt Delay register */
2918 ew32(TIDV
, adapter
->tx_int_delay
);
2919 /* Tx irq moderation */
2920 ew32(TADV
, adapter
->tx_abs_int_delay
);
2922 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
2923 u32 txdctl
= er32(TXDCTL(0));
2924 txdctl
&= ~(E1000_TXDCTL_PTHRESH
| E1000_TXDCTL_HTHRESH
|
2925 E1000_TXDCTL_WTHRESH
);
2926 /* set up some performance related parameters to encourage the
2927 * hardware to use the bus more efficiently in bursts, depends
2928 * on the tx_int_delay to be enabled,
2929 * wthresh = 1 ==> burst write is disabled to avoid Tx stalls
2930 * hthresh = 1 ==> prefetch when one or more available
2931 * pthresh = 0x1f ==> prefetch if internal cache 31 or less
2932 * BEWARE: this seems to work but should be considered first if
2933 * there are Tx hangs or other Tx related bugs
2935 txdctl
|= E1000_TXDCTL_DMA_BURST_ENABLE
;
2936 ew32(TXDCTL(0), txdctl
);
2938 /* erratum work around: set txdctl the same for both queues */
2939 ew32(TXDCTL(1), er32(TXDCTL(0)));
2941 /* Program the Transmit Control Register */
2943 tctl
&= ~E1000_TCTL_CT
;
2944 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
2945 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
2947 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
2948 tarc
= er32(TARC(0));
2949 /* set the speed mode bit, we'll clear it if we're not at
2950 * gigabit link later
2952 #define SPEED_MODE_BIT (1 << 21)
2953 tarc
|= SPEED_MODE_BIT
;
2954 ew32(TARC(0), tarc
);
2957 /* errata: program both queues to unweighted RR */
2958 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
2959 tarc
= er32(TARC(0));
2961 ew32(TARC(0), tarc
);
2962 tarc
= er32(TARC(1));
2964 ew32(TARC(1), tarc
);
2967 /* Setup Transmit Descriptor Settings for eop descriptor */
2968 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
2970 /* only set IDE if we are delaying interrupts using the timers */
2971 if (adapter
->tx_int_delay
)
2972 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
2974 /* enable Report Status bit */
2975 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
2979 hw
->mac
.ops
.config_collision_dist(hw
);
2983 * e1000_setup_rctl - configure the receive control registers
2984 * @adapter: Board private structure
2986 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2987 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2988 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
2990 struct e1000_hw
*hw
= &adapter
->hw
;
2994 /* Workaround Si errata on PCHx - configure jumbo frame flow.
2995 * If jumbo frames not set, program related MAC/PHY registers
2998 if (hw
->mac
.type
>= e1000_pch2lan
) {
3001 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
)
3002 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, true);
3004 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, false);
3007 e_dbg("failed to enable|disable jumbo frame workaround mode\n");
3010 /* Program MC offset vector base */
3012 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
3013 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
3014 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
3015 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
3017 /* Do not Store bad packets */
3018 rctl
&= ~E1000_RCTL_SBP
;
3020 /* Enable Long Packet receive */
3021 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
3022 rctl
&= ~E1000_RCTL_LPE
;
3024 rctl
|= E1000_RCTL_LPE
;
3026 /* Some systems expect that the CRC is included in SMBUS traffic. The
3027 * hardware strips the CRC before sending to both SMBUS (BMC) and to
3028 * host memory when this is enabled
3030 if (adapter
->flags2
& FLAG2_CRC_STRIPPING
)
3031 rctl
|= E1000_RCTL_SECRC
;
3033 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
3034 if ((hw
->phy
.type
== e1000_phy_82577
) && (rctl
& E1000_RCTL_LPE
)) {
3037 e1e_rphy(hw
, PHY_REG(770, 26), &phy_data
);
3039 phy_data
|= (1 << 2);
3040 e1e_wphy(hw
, PHY_REG(770, 26), phy_data
);
3042 e1e_rphy(hw
, 22, &phy_data
);
3044 phy_data
|= (1 << 14);
3045 e1e_wphy(hw
, 0x10, 0x2823);
3046 e1e_wphy(hw
, 0x11, 0x0003);
3047 e1e_wphy(hw
, 22, phy_data
);
3050 /* Setup buffer sizes */
3051 rctl
&= ~E1000_RCTL_SZ_4096
;
3052 rctl
|= E1000_RCTL_BSEX
;
3053 switch (adapter
->rx_buffer_len
) {
3056 rctl
|= E1000_RCTL_SZ_2048
;
3057 rctl
&= ~E1000_RCTL_BSEX
;
3060 rctl
|= E1000_RCTL_SZ_4096
;
3063 rctl
|= E1000_RCTL_SZ_8192
;
3066 rctl
|= E1000_RCTL_SZ_16384
;
3070 /* Enable Extended Status in all Receive Descriptors */
3071 rfctl
= er32(RFCTL
);
3072 rfctl
|= E1000_RFCTL_EXTEN
;
3075 /* 82571 and greater support packet-split where the protocol
3076 * header is placed in skb->data and the packet data is
3077 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
3078 * In the case of a non-split, skb->data is linearly filled,
3079 * followed by the page buffers. Therefore, skb->data is
3080 * sized to hold the largest protocol header.
3082 * allocations using alloc_page take too long for regular MTU
3083 * so only enable packet split for jumbo frames
3085 * Using pages when the page size is greater than 16k wastes
3086 * a lot of memory, since we allocate 3 pages at all times
3089 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
3090 if ((pages
<= 3) && (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
3091 adapter
->rx_ps_pages
= pages
;
3093 adapter
->rx_ps_pages
= 0;
3095 if (adapter
->rx_ps_pages
) {
3098 /* Enable Packet split descriptors */
3099 rctl
|= E1000_RCTL_DTYP_PS
;
3101 psrctl
|= adapter
->rx_ps_bsize0
>> E1000_PSRCTL_BSIZE0_SHIFT
;
3103 switch (adapter
->rx_ps_pages
) {
3105 psrctl
|= PAGE_SIZE
<< E1000_PSRCTL_BSIZE3_SHIFT
;
3108 psrctl
|= PAGE_SIZE
<< E1000_PSRCTL_BSIZE2_SHIFT
;
3111 psrctl
|= PAGE_SIZE
>> E1000_PSRCTL_BSIZE1_SHIFT
;
3115 ew32(PSRCTL
, psrctl
);
3118 /* This is useful for sniffing bad packets. */
3119 if (adapter
->netdev
->features
& NETIF_F_RXALL
) {
3120 /* UPE and MPE will be handled by normal PROMISC logic
3121 * in e1000e_set_rx_mode
3123 rctl
|= (E1000_RCTL_SBP
| /* Receive bad packets */
3124 E1000_RCTL_BAM
| /* RX All Bcast Pkts */
3125 E1000_RCTL_PMCF
); /* RX All MAC Ctrl Pkts */
3127 rctl
&= ~(E1000_RCTL_VFE
| /* Disable VLAN filter */
3128 E1000_RCTL_DPF
| /* Allow filtered pause */
3129 E1000_RCTL_CFIEN
); /* Dis VLAN CFIEN Filter */
3130 /* Do not mess with E1000_CTRL_VME, it affects transmit as well,
3131 * and that breaks VLANs.
3136 /* just started the receive unit, no need to restart */
3137 adapter
->flags
&= ~FLAG_RESTART_NOW
;
3141 * e1000_configure_rx - Configure Receive Unit after Reset
3142 * @adapter: board private structure
3144 * Configure the Rx unit of the MAC after a reset.
3146 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
3148 struct e1000_hw
*hw
= &adapter
->hw
;
3149 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
3151 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
3153 if (adapter
->rx_ps_pages
) {
3154 /* this is a 32 byte descriptor */
3155 rdlen
= rx_ring
->count
*
3156 sizeof(union e1000_rx_desc_packet_split
);
3157 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
3158 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
3159 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3160 rdlen
= rx_ring
->count
* sizeof(union e1000_rx_desc_extended
);
3161 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
3162 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
3164 rdlen
= rx_ring
->count
* sizeof(union e1000_rx_desc_extended
);
3165 adapter
->clean_rx
= e1000_clean_rx_irq
;
3166 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
3169 /* disable receives while setting up the descriptors */
3171 if (!(adapter
->flags2
& FLAG2_NO_DISABLE_RX
))
3172 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3174 usleep_range(10000, 20000);
3176 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
3177 /* set the writeback threshold (only takes effect if the RDTR
3178 * is set). set GRAN=1 and write back up to 0x4 worth, and
3179 * enable prefetching of 0x20 Rx descriptors
3185 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE
);
3186 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE
);
3188 /* override the delay timers for enabling bursting, only if
3189 * the value was not set by the user via module options
3191 if (adapter
->rx_int_delay
== DEFAULT_RDTR
)
3192 adapter
->rx_int_delay
= BURST_RDTR
;
3193 if (adapter
->rx_abs_int_delay
== DEFAULT_RADV
)
3194 adapter
->rx_abs_int_delay
= BURST_RADV
;
3197 /* set the Receive Delay Timer Register */
3198 ew32(RDTR
, adapter
->rx_int_delay
);
3200 /* irq moderation */
3201 ew32(RADV
, adapter
->rx_abs_int_delay
);
3202 if ((adapter
->itr_setting
!= 0) && (adapter
->itr
!= 0))
3203 e1000e_write_itr(adapter
, adapter
->itr
);
3205 ctrl_ext
= er32(CTRL_EXT
);
3206 /* Auto-Mask interrupts upon ICR access */
3207 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
3208 ew32(IAM
, 0xffffffff);
3209 ew32(CTRL_EXT
, ctrl_ext
);
3212 /* Setup the HW Rx Head and Tail Descriptor Pointers and
3213 * the Base and Length of the Rx Descriptor Ring
3215 rdba
= rx_ring
->dma
;
3216 ew32(RDBAL(0), (rdba
& DMA_BIT_MASK(32)));
3217 ew32(RDBAH(0), (rdba
>> 32));
3218 ew32(RDLEN(0), rdlen
);
3221 rx_ring
->head
= adapter
->hw
.hw_addr
+ E1000_RDH(0);
3222 rx_ring
->tail
= adapter
->hw
.hw_addr
+ E1000_RDT(0);
3224 /* Enable Receive Checksum Offload for TCP and UDP */
3225 rxcsum
= er32(RXCSUM
);
3226 if (adapter
->netdev
->features
& NETIF_F_RXCSUM
)
3227 rxcsum
|= E1000_RXCSUM_TUOFL
;
3229 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
3230 ew32(RXCSUM
, rxcsum
);
3232 /* With jumbo frames, excessive C-state transition latencies result
3233 * in dropped transactions.
3235 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3237 ((er32(PBA
) & E1000_PBA_RXA_MASK
) * 1024 -
3238 adapter
->max_frame_size
) * 8 / 1000;
3240 if (adapter
->flags
& FLAG_IS_ICH
) {
3241 u32 rxdctl
= er32(RXDCTL(0));
3242 ew32(RXDCTL(0), rxdctl
| 0x3);
3245 pm_qos_update_request(&adapter
->netdev
->pm_qos_req
, lat
);
3247 pm_qos_update_request(&adapter
->netdev
->pm_qos_req
,
3248 PM_QOS_DEFAULT_VALUE
);
3251 /* Enable Receives */
3256 * e1000e_write_mc_addr_list - write multicast addresses to MTA
3257 * @netdev: network interface device structure
3259 * Writes multicast address list to the MTA hash table.
3260 * Returns: -ENOMEM on failure
3261 * 0 on no addresses written
3262 * X on writing X addresses to MTA
3264 static int e1000e_write_mc_addr_list(struct net_device
*netdev
)
3266 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3267 struct e1000_hw
*hw
= &adapter
->hw
;
3268 struct netdev_hw_addr
*ha
;
3272 if (netdev_mc_empty(netdev
)) {
3273 /* nothing to program, so clear mc list */
3274 hw
->mac
.ops
.update_mc_addr_list(hw
, NULL
, 0);
3278 mta_list
= kzalloc(netdev_mc_count(netdev
) * ETH_ALEN
, GFP_ATOMIC
);
3282 /* update_mc_addr_list expects a packed array of only addresses. */
3284 netdev_for_each_mc_addr(ha
, netdev
)
3285 memcpy(mta_list
+ (i
++ * ETH_ALEN
), ha
->addr
, ETH_ALEN
);
3287 hw
->mac
.ops
.update_mc_addr_list(hw
, mta_list
, i
);
3290 return netdev_mc_count(netdev
);
3294 * e1000e_write_uc_addr_list - write unicast addresses to RAR table
3295 * @netdev: network interface device structure
3297 * Writes unicast address list to the RAR table.
3298 * Returns: -ENOMEM on failure/insufficient address space
3299 * 0 on no addresses written
3300 * X on writing X addresses to the RAR table
3302 static int e1000e_write_uc_addr_list(struct net_device
*netdev
)
3304 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3305 struct e1000_hw
*hw
= &adapter
->hw
;
3306 unsigned int rar_entries
= hw
->mac
.rar_entry_count
;
3309 /* save a rar entry for our hardware address */
3312 /* save a rar entry for the LAA workaround */
3313 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
)
3316 /* return ENOMEM indicating insufficient memory for addresses */
3317 if (netdev_uc_count(netdev
) > rar_entries
)
3320 if (!netdev_uc_empty(netdev
) && rar_entries
) {
3321 struct netdev_hw_addr
*ha
;
3323 /* write the addresses in reverse order to avoid write
3326 netdev_for_each_uc_addr(ha
, netdev
) {
3329 hw
->mac
.ops
.rar_set(hw
, ha
->addr
, rar_entries
--);
3334 /* zero out the remaining RAR entries not used above */
3335 for (; rar_entries
> 0; rar_entries
--) {
3336 ew32(RAH(rar_entries
), 0);
3337 ew32(RAL(rar_entries
), 0);
3345 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set
3346 * @netdev: network interface device structure
3348 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast
3349 * address list or the network interface flags are updated. This routine is
3350 * responsible for configuring the hardware for proper unicast, multicast,
3351 * promiscuous mode, and all-multi behavior.
3353 static void e1000e_set_rx_mode(struct net_device
*netdev
)
3355 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3356 struct e1000_hw
*hw
= &adapter
->hw
;
3359 if (pm_runtime_suspended(netdev
->dev
.parent
))
3362 /* Check for Promiscuous and All Multicast modes */
3365 /* clear the affected bits */
3366 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3368 if (netdev
->flags
& IFF_PROMISC
) {
3369 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3370 /* Do not hardware filter VLANs in promisc mode */
3371 e1000e_vlan_filter_disable(adapter
);
3375 if (netdev
->flags
& IFF_ALLMULTI
) {
3376 rctl
|= E1000_RCTL_MPE
;
3378 /* Write addresses to the MTA, if the attempt fails
3379 * then we should just turn on promiscuous mode so
3380 * that we can at least receive multicast traffic
3382 count
= e1000e_write_mc_addr_list(netdev
);
3384 rctl
|= E1000_RCTL_MPE
;
3386 e1000e_vlan_filter_enable(adapter
);
3387 /* Write addresses to available RAR registers, if there is not
3388 * sufficient space to store all the addresses then enable
3389 * unicast promiscuous mode
3391 count
= e1000e_write_uc_addr_list(netdev
);
3393 rctl
|= E1000_RCTL_UPE
;
3398 if (netdev
->features
& NETIF_F_HW_VLAN_CTAG_RX
)
3399 e1000e_vlan_strip_enable(adapter
);
3401 e1000e_vlan_strip_disable(adapter
);
3404 static void e1000e_setup_rss_hash(struct e1000_adapter
*adapter
)
3406 struct e1000_hw
*hw
= &adapter
->hw
;
3409 static const u32 rsskey
[10] = {
3410 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0,
3411 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe
3414 /* Fill out hash function seed */
3415 for (i
= 0; i
< 10; i
++)
3416 ew32(RSSRK(i
), rsskey
[i
]);
3418 /* Direct all traffic to queue 0 */
3419 for (i
= 0; i
< 32; i
++)
3422 /* Disable raw packet checksumming so that RSS hash is placed in
3423 * descriptor on writeback.
3425 rxcsum
= er32(RXCSUM
);
3426 rxcsum
|= E1000_RXCSUM_PCSD
;
3428 ew32(RXCSUM
, rxcsum
);
3430 mrqc
= (E1000_MRQC_RSS_FIELD_IPV4
|
3431 E1000_MRQC_RSS_FIELD_IPV4_TCP
|
3432 E1000_MRQC_RSS_FIELD_IPV6
|
3433 E1000_MRQC_RSS_FIELD_IPV6_TCP
|
3434 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX
);
3440 * e1000e_get_base_timinca - get default SYSTIM time increment attributes
3441 * @adapter: board private structure
3442 * @timinca: pointer to returned time increment attributes
3444 * Get attributes for incrementing the System Time Register SYSTIML/H at
3445 * the default base frequency, and set the cyclecounter shift value.
3447 s32
e1000e_get_base_timinca(struct e1000_adapter
*adapter
, u32
*timinca
)
3449 struct e1000_hw
*hw
= &adapter
->hw
;
3450 u32 incvalue
, incperiod
, shift
;
3452 /* Make sure clock is enabled on I217 before checking the frequency */
3453 if ((hw
->mac
.type
== e1000_pch_lpt
) &&
3454 !(er32(TSYNCTXCTL
) & E1000_TSYNCTXCTL_ENABLED
) &&
3455 !(er32(TSYNCRXCTL
) & E1000_TSYNCRXCTL_ENABLED
)) {
3456 u32 fextnvm7
= er32(FEXTNVM7
);
3458 if (!(fextnvm7
& (1 << 0))) {
3459 ew32(FEXTNVM7
, fextnvm7
| (1 << 0));
3464 switch (hw
->mac
.type
) {
3467 /* On I217, the clock frequency is 25MHz or 96MHz as
3468 * indicated by the System Clock Frequency Indication
3470 if ((hw
->mac
.type
!= e1000_pch_lpt
) ||
3471 (er32(TSYNCRXCTL
) & E1000_TSYNCRXCTL_SYSCFI
)) {
3472 /* Stable 96MHz frequency */
3473 incperiod
= INCPERIOD_96MHz
;
3474 incvalue
= INCVALUE_96MHz
;
3475 shift
= INCVALUE_SHIFT_96MHz
;
3476 adapter
->cc
.shift
= shift
+ INCPERIOD_SHIFT_96MHz
;
3482 /* Stable 25MHz frequency */
3483 incperiod
= INCPERIOD_25MHz
;
3484 incvalue
= INCVALUE_25MHz
;
3485 shift
= INCVALUE_SHIFT_25MHz
;
3486 adapter
->cc
.shift
= shift
;
3492 *timinca
= ((incperiod
<< E1000_TIMINCA_INCPERIOD_SHIFT
) |
3493 ((incvalue
<< shift
) & E1000_TIMINCA_INCVALUE_MASK
));
3499 * e1000e_config_hwtstamp - configure the hwtstamp registers and enable/disable
3500 * @adapter: board private structure
3502 * Outgoing time stamping can be enabled and disabled. Play nice and
3503 * disable it when requested, although it shouldn't cause any overhead
3504 * when no packet needs it. At most one packet in the queue may be
3505 * marked for time stamping, otherwise it would be impossible to tell
3506 * for sure to which packet the hardware time stamp belongs.
3508 * Incoming time stamping has to be configured via the hardware filters.
3509 * Not all combinations are supported, in particular event type has to be
3510 * specified. Matching the kind of event packet is not supported, with the
3511 * exception of "all V2 events regardless of level 2 or 4".
3513 static int e1000e_config_hwtstamp(struct e1000_adapter
*adapter
,
3514 struct hwtstamp_config
*config
)
3516 struct e1000_hw
*hw
= &adapter
->hw
;
3517 u32 tsync_tx_ctl
= E1000_TSYNCTXCTL_ENABLED
;
3518 u32 tsync_rx_ctl
= E1000_TSYNCRXCTL_ENABLED
;
3526 if (!(adapter
->flags
& FLAG_HAS_HW_TIMESTAMP
))
3529 /* flags reserved for future extensions - must be zero */
3533 switch (config
->tx_type
) {
3534 case HWTSTAMP_TX_OFF
:
3537 case HWTSTAMP_TX_ON
:
3543 switch (config
->rx_filter
) {
3544 case HWTSTAMP_FILTER_NONE
:
3547 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC
:
3548 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L4_V1
;
3549 rxmtrl
= E1000_RXMTRL_PTP_V1_SYNC_MESSAGE
;
3552 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ
:
3553 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L4_V1
;
3554 rxmtrl
= E1000_RXMTRL_PTP_V1_DELAY_REQ_MESSAGE
;
3557 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC
:
3558 /* Also time stamps V2 L2 Path Delay Request/Response */
3559 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L2_V2
;
3560 rxmtrl
= E1000_RXMTRL_PTP_V2_SYNC_MESSAGE
;
3563 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ
:
3564 /* Also time stamps V2 L2 Path Delay Request/Response. */
3565 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L2_V2
;
3566 rxmtrl
= E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE
;
3569 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC
:
3570 /* Hardware cannot filter just V2 L4 Sync messages;
3571 * fall-through to V2 (both L2 and L4) Sync.
3573 case HWTSTAMP_FILTER_PTP_V2_SYNC
:
3574 /* Also time stamps V2 Path Delay Request/Response. */
3575 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L2_L4_V2
;
3576 rxmtrl
= E1000_RXMTRL_PTP_V2_SYNC_MESSAGE
;
3580 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ
:
3581 /* Hardware cannot filter just V2 L4 Delay Request messages;
3582 * fall-through to V2 (both L2 and L4) Delay Request.
3584 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ
:
3585 /* Also time stamps V2 Path Delay Request/Response. */
3586 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L2_L4_V2
;
3587 rxmtrl
= E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE
;
3591 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT
:
3592 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT
:
3593 /* Hardware cannot filter just V2 L4 or L2 Event messages;
3594 * fall-through to all V2 (both L2 and L4) Events.
3596 case HWTSTAMP_FILTER_PTP_V2_EVENT
:
3597 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_EVENT_V2
;
3598 config
->rx_filter
= HWTSTAMP_FILTER_PTP_V2_EVENT
;
3602 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT
:
3603 /* For V1, the hardware can only filter Sync messages or
3604 * Delay Request messages but not both so fall-through to
3605 * time stamp all packets.
3607 case HWTSTAMP_FILTER_ALL
:
3610 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_ALL
;
3611 config
->rx_filter
= HWTSTAMP_FILTER_ALL
;
3617 adapter
->hwtstamp_config
= *config
;
3619 /* enable/disable Tx h/w time stamping */
3620 regval
= er32(TSYNCTXCTL
);
3621 regval
&= ~E1000_TSYNCTXCTL_ENABLED
;
3622 regval
|= tsync_tx_ctl
;
3623 ew32(TSYNCTXCTL
, regval
);
3624 if ((er32(TSYNCTXCTL
) & E1000_TSYNCTXCTL_ENABLED
) !=
3625 (regval
& E1000_TSYNCTXCTL_ENABLED
)) {
3626 e_err("Timesync Tx Control register not set as expected\n");
3630 /* enable/disable Rx h/w time stamping */
3631 regval
= er32(TSYNCRXCTL
);
3632 regval
&= ~(E1000_TSYNCRXCTL_ENABLED
| E1000_TSYNCRXCTL_TYPE_MASK
);
3633 regval
|= tsync_rx_ctl
;
3634 ew32(TSYNCRXCTL
, regval
);
3635 if ((er32(TSYNCRXCTL
) & (E1000_TSYNCRXCTL_ENABLED
|
3636 E1000_TSYNCRXCTL_TYPE_MASK
)) !=
3637 (regval
& (E1000_TSYNCRXCTL_ENABLED
|
3638 E1000_TSYNCRXCTL_TYPE_MASK
))) {
3639 e_err("Timesync Rx Control register not set as expected\n");
3643 /* L2: define ethertype filter for time stamped packets */
3645 rxmtrl
|= ETH_P_1588
;
3647 /* define which PTP packets get time stamped */
3648 ew32(RXMTRL
, rxmtrl
);
3650 /* Filter by destination port */
3652 rxudp
= PTP_EV_PORT
;
3653 cpu_to_be16s(&rxudp
);
3659 /* Clear TSYNCRXCTL_VALID & TSYNCTXCTL_VALID bit */
3663 /* Get and set the System Time Register SYSTIM base frequency */
3664 ret_val
= e1000e_get_base_timinca(adapter
, ®val
);
3667 ew32(TIMINCA
, regval
);
3669 /* reset the ns time counter */
3670 timecounter_init(&adapter
->tc
, &adapter
->cc
,
3671 ktime_to_ns(ktime_get_real()));
3677 * e1000_configure - configure the hardware for Rx and Tx
3678 * @adapter: private board structure
3680 static void e1000_configure(struct e1000_adapter
*adapter
)
3682 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
3684 e1000e_set_rx_mode(adapter
->netdev
);
3686 e1000_restore_vlan(adapter
);
3687 e1000_init_manageability_pt(adapter
);
3689 e1000_configure_tx(adapter
);
3691 if (adapter
->netdev
->features
& NETIF_F_RXHASH
)
3692 e1000e_setup_rss_hash(adapter
);
3693 e1000_setup_rctl(adapter
);
3694 e1000_configure_rx(adapter
);
3695 adapter
->alloc_rx_buf(rx_ring
, e1000_desc_unused(rx_ring
), GFP_KERNEL
);
3699 * e1000e_power_up_phy - restore link in case the phy was powered down
3700 * @adapter: address of board private structure
3702 * The phy may be powered down to save power and turn off link when the
3703 * driver is unloaded and wake on lan is not enabled (among others)
3704 * *** this routine MUST be followed by a call to e1000e_reset ***
3706 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
3708 if (adapter
->hw
.phy
.ops
.power_up
)
3709 adapter
->hw
.phy
.ops
.power_up(&adapter
->hw
);
3711 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
3715 * e1000_power_down_phy - Power down the PHY
3717 * Power down the PHY so no link is implied when interface is down.
3718 * The PHY cannot be powered down if management or WoL is active.
3720 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
3722 if (adapter
->hw
.phy
.ops
.power_down
)
3723 adapter
->hw
.phy
.ops
.power_down(&adapter
->hw
);
3727 * e1000e_reset - bring the hardware into a known good state
3729 * This function boots the hardware and enables some settings that
3730 * require a configuration cycle of the hardware - those cannot be
3731 * set/changed during runtime. After reset the device needs to be
3732 * properly configured for Rx, Tx etc.
3734 void e1000e_reset(struct e1000_adapter
*adapter
)
3736 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3737 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
3738 struct e1000_hw
*hw
= &adapter
->hw
;
3739 u32 tx_space
, min_tx_space
, min_rx_space
;
3740 u32 pba
= adapter
->pba
;
3743 /* reset Packet Buffer Allocation to default */
3746 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3747 /* To maintain wire speed transmits, the Tx FIFO should be
3748 * large enough to accommodate two full transmit packets,
3749 * rounded up to the next 1KB and expressed in KB. Likewise,
3750 * the Rx FIFO should be large enough to accommodate at least
3751 * one full receive packet and is similarly rounded up and
3755 /* upper 16 bits has Tx packet buffer allocation size in KB */
3756 tx_space
= pba
>> 16;
3757 /* lower 16 bits has Rx packet buffer allocation size in KB */
3759 /* the Tx fifo also stores 16 bytes of information about the Tx
3760 * but don't include ethernet FCS because hardware appends it
3762 min_tx_space
= (adapter
->max_frame_size
+
3763 sizeof(struct e1000_tx_desc
) - ETH_FCS_LEN
) * 2;
3764 min_tx_space
= ALIGN(min_tx_space
, 1024);
3765 min_tx_space
>>= 10;
3766 /* software strips receive CRC, so leave room for it */
3767 min_rx_space
= adapter
->max_frame_size
;
3768 min_rx_space
= ALIGN(min_rx_space
, 1024);
3769 min_rx_space
>>= 10;
3771 /* If current Tx allocation is less than the min Tx FIFO size,
3772 * and the min Tx FIFO size is less than the current Rx FIFO
3773 * allocation, take space away from current Rx allocation
3775 if ((tx_space
< min_tx_space
) &&
3776 ((min_tx_space
- tx_space
) < pba
)) {
3777 pba
-= min_tx_space
- tx_space
;
3779 /* if short on Rx space, Rx wins and must trump Tx
3782 if (pba
< min_rx_space
)
3789 /* flow control settings
3791 * The high water mark must be low enough to fit one full frame
3792 * (or the size used for early receive) above it in the Rx FIFO.
3793 * Set it to the lower of:
3794 * - 90% of the Rx FIFO size, and
3795 * - the full Rx FIFO size minus one full frame
3797 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
3798 fc
->pause_time
= 0xFFFF;
3800 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
3801 fc
->send_xon
= true;
3802 fc
->current_mode
= fc
->requested_mode
;
3804 switch (hw
->mac
.type
) {
3806 case e1000_ich10lan
:
3807 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3810 fc
->high_water
= 0x2800;
3811 fc
->low_water
= fc
->high_water
- 8;
3816 hwm
= min(((pba
<< 10) * 9 / 10),
3817 ((pba
<< 10) - adapter
->max_frame_size
));
3819 fc
->high_water
= hwm
& E1000_FCRTH_RTH
; /* 8-byte granularity */
3820 fc
->low_water
= fc
->high_water
- 8;
3823 /* Workaround PCH LOM adapter hangs with certain network
3824 * loads. If hangs persist, try disabling Tx flow control.
3826 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3827 fc
->high_water
= 0x3500;
3828 fc
->low_water
= 0x1500;
3830 fc
->high_water
= 0x5000;
3831 fc
->low_water
= 0x3000;
3833 fc
->refresh_time
= 0x1000;
3837 fc
->refresh_time
= 0x0400;
3839 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
) {
3840 fc
->high_water
= 0x05C20;
3841 fc
->low_water
= 0x05048;
3842 fc
->pause_time
= 0x0650;
3848 fc
->high_water
= ((pba
<< 10) * 9 / 10) & E1000_FCRTH_RTH
;
3849 fc
->low_water
= ((pba
<< 10) * 8 / 10) & E1000_FCRTL_RTL
;
3853 /* Alignment of Tx data is on an arbitrary byte boundary with the
3854 * maximum size per Tx descriptor limited only to the transmit
3855 * allocation of the packet buffer minus 96 bytes with an upper
3856 * limit of 24KB due to receive synchronization limitations.
3858 adapter
->tx_fifo_limit
= min_t(u32
, ((er32(PBA
) >> 16) << 10) - 96,
3861 /* Disable Adaptive Interrupt Moderation if 2 full packets cannot
3862 * fit in receive buffer.
3864 if (adapter
->itr_setting
& 0x3) {
3865 if ((adapter
->max_frame_size
* 2) > (pba
<< 10)) {
3866 if (!(adapter
->flags2
& FLAG2_DISABLE_AIM
)) {
3867 dev_info(&adapter
->pdev
->dev
,
3868 "Interrupt Throttle Rate off\n");
3869 adapter
->flags2
|= FLAG2_DISABLE_AIM
;
3870 e1000e_write_itr(adapter
, 0);
3872 } else if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
3873 dev_info(&adapter
->pdev
->dev
,
3874 "Interrupt Throttle Rate on\n");
3875 adapter
->flags2
&= ~FLAG2_DISABLE_AIM
;
3876 adapter
->itr
= 20000;
3877 e1000e_write_itr(adapter
, adapter
->itr
);
3881 /* Allow time for pending master requests to run */
3882 mac
->ops
.reset_hw(hw
);
3884 /* For parts with AMT enabled, let the firmware know
3885 * that the network interface is in control
3887 if (adapter
->flags
& FLAG_HAS_AMT
)
3888 e1000e_get_hw_control(adapter
);
3892 if (mac
->ops
.init_hw(hw
))
3893 e_err("Hardware Error\n");
3895 e1000_update_mng_vlan(adapter
);
3897 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3898 ew32(VET
, ETH_P_8021Q
);
3900 e1000e_reset_adaptive(hw
);
3902 /* initialize systim and reset the ns time counter */
3903 e1000e_config_hwtstamp(adapter
, &adapter
->hwtstamp_config
);
3905 /* Set EEE advertisement as appropriate */
3906 if (adapter
->flags2
& FLAG2_HAS_EEE
) {
3910 switch (hw
->phy
.type
) {
3911 case e1000_phy_82579
:
3912 adv_addr
= I82579_EEE_ADVERTISEMENT
;
3914 case e1000_phy_i217
:
3915 adv_addr
= I217_EEE_ADVERTISEMENT
;
3918 dev_err(&adapter
->pdev
->dev
,
3919 "Invalid PHY type setting EEE advertisement\n");
3923 ret_val
= hw
->phy
.ops
.acquire(hw
);
3925 dev_err(&adapter
->pdev
->dev
,
3926 "EEE advertisement - unable to acquire PHY\n");
3930 e1000_write_emi_reg_locked(hw
, adv_addr
,
3931 hw
->dev_spec
.ich8lan
.eee_disable
?
3932 0 : adapter
->eee_advert
);
3934 hw
->phy
.ops
.release(hw
);
3937 if (!netif_running(adapter
->netdev
) &&
3938 !test_bit(__E1000_TESTING
, &adapter
->state
))
3939 e1000_power_down_phy(adapter
);
3941 e1000_get_phy_info(hw
);
3943 if ((adapter
->flags
& FLAG_HAS_SMART_POWER_DOWN
) &&
3944 !(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
3946 /* speed up time to link by disabling smart power down, ignore
3947 * the return value of this function because there is nothing
3948 * different we would do if it failed
3950 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
3951 phy_data
&= ~IGP02E1000_PM_SPD
;
3952 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
3956 int e1000e_up(struct e1000_adapter
*adapter
)
3958 struct e1000_hw
*hw
= &adapter
->hw
;
3960 /* hardware has been reset, we need to reload some things */
3961 e1000_configure(adapter
);
3963 clear_bit(__E1000_DOWN
, &adapter
->state
);
3965 if (adapter
->msix_entries
)
3966 e1000_configure_msix(adapter
);
3967 e1000_irq_enable(adapter
);
3969 netif_start_queue(adapter
->netdev
);
3971 /* fire a link change interrupt to start the watchdog */
3972 if (adapter
->msix_entries
)
3973 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
3975 ew32(ICS
, E1000_ICS_LSC
);
3980 static void e1000e_flush_descriptors(struct e1000_adapter
*adapter
)
3982 struct e1000_hw
*hw
= &adapter
->hw
;
3984 if (!(adapter
->flags2
& FLAG2_DMA_BURST
))
3987 /* flush pending descriptor writebacks to memory */
3988 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
3989 ew32(RDTR
, adapter
->rx_int_delay
| E1000_RDTR_FPD
);
3991 /* execute the writes immediately */
3994 /* due to rare timing issues, write to TIDV/RDTR again to ensure the
3995 * write is successful
3997 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
3998 ew32(RDTR
, adapter
->rx_int_delay
| E1000_RDTR_FPD
);
4000 /* execute the writes immediately */
4004 static void e1000e_update_stats(struct e1000_adapter
*adapter
);
4007 * e1000e_down - quiesce the device and optionally reset the hardware
4008 * @adapter: board private structure
4009 * @reset: boolean flag to reset the hardware or not
4011 void e1000e_down(struct e1000_adapter
*adapter
, bool reset
)
4013 struct net_device
*netdev
= adapter
->netdev
;
4014 struct e1000_hw
*hw
= &adapter
->hw
;
4017 /* signal that we're down so the interrupt handler does not
4018 * reschedule our watchdog timer
4020 set_bit(__E1000_DOWN
, &adapter
->state
);
4022 /* disable receives in the hardware */
4024 if (!(adapter
->flags2
& FLAG2_NO_DISABLE_RX
))
4025 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
4026 /* flush and sleep below */
4028 netif_stop_queue(netdev
);
4030 /* disable transmits in the hardware */
4032 tctl
&= ~E1000_TCTL_EN
;
4035 /* flush both disables and wait for them to finish */
4037 usleep_range(10000, 20000);
4039 e1000_irq_disable(adapter
);
4041 napi_synchronize(&adapter
->napi
);
4043 del_timer_sync(&adapter
->watchdog_timer
);
4044 del_timer_sync(&adapter
->phy_info_timer
);
4046 netif_carrier_off(netdev
);
4048 spin_lock(&adapter
->stats64_lock
);
4049 e1000e_update_stats(adapter
);
4050 spin_unlock(&adapter
->stats64_lock
);
4052 e1000e_flush_descriptors(adapter
);
4053 e1000_clean_tx_ring(adapter
->tx_ring
);
4054 e1000_clean_rx_ring(adapter
->rx_ring
);
4056 adapter
->link_speed
= 0;
4057 adapter
->link_duplex
= 0;
4059 /* Disable Si errata workaround on PCHx for jumbo frame flow */
4060 if ((hw
->mac
.type
>= e1000_pch2lan
) &&
4061 (adapter
->netdev
->mtu
> ETH_DATA_LEN
) &&
4062 e1000_lv_jumbo_workaround_ich8lan(hw
, false))
4063 e_dbg("failed to disable jumbo frame workaround mode\n");
4065 if (reset
&& !pci_channel_offline(adapter
->pdev
))
4066 e1000e_reset(adapter
);
4069 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
4072 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
4073 usleep_range(1000, 2000);
4074 e1000e_down(adapter
, true);
4076 clear_bit(__E1000_RESETTING
, &adapter
->state
);
4080 * e1000e_cyclecounter_read - read raw cycle counter (used by time counter)
4081 * @cc: cyclecounter structure
4083 static cycle_t
e1000e_cyclecounter_read(const struct cyclecounter
*cc
)
4085 struct e1000_adapter
*adapter
= container_of(cc
, struct e1000_adapter
,
4087 struct e1000_hw
*hw
= &adapter
->hw
;
4090 /* latch SYSTIMH on read of SYSTIML */
4091 systim
= (cycle_t
)er32(SYSTIML
);
4092 systim
|= (cycle_t
)er32(SYSTIMH
) << 32;
4098 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
4099 * @adapter: board private structure to initialize
4101 * e1000_sw_init initializes the Adapter private data structure.
4102 * Fields are initialized based on PCI device information and
4103 * OS network device settings (MTU size).
4105 static int e1000_sw_init(struct e1000_adapter
*adapter
)
4107 struct net_device
*netdev
= adapter
->netdev
;
4109 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
4110 adapter
->rx_ps_bsize0
= 128;
4111 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4112 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
4113 adapter
->tx_ring_count
= E1000_DEFAULT_TXD
;
4114 adapter
->rx_ring_count
= E1000_DEFAULT_RXD
;
4116 spin_lock_init(&adapter
->stats64_lock
);
4118 e1000e_set_interrupt_capability(adapter
);
4120 if (e1000_alloc_queues(adapter
))
4123 /* Setup hardware time stamping cyclecounter */
4124 if (adapter
->flags
& FLAG_HAS_HW_TIMESTAMP
) {
4125 adapter
->cc
.read
= e1000e_cyclecounter_read
;
4126 adapter
->cc
.mask
= CLOCKSOURCE_MASK(64);
4127 adapter
->cc
.mult
= 1;
4128 /* cc.shift set in e1000e_get_base_tininca() */
4130 spin_lock_init(&adapter
->systim_lock
);
4131 INIT_WORK(&adapter
->tx_hwtstamp_work
, e1000e_tx_hwtstamp_work
);
4134 /* Explicitly disable IRQ since the NIC can be in any state. */
4135 e1000_irq_disable(adapter
);
4137 set_bit(__E1000_DOWN
, &adapter
->state
);
4142 * e1000_intr_msi_test - Interrupt Handler
4143 * @irq: interrupt number
4144 * @data: pointer to a network interface device structure
4146 static irqreturn_t
e1000_intr_msi_test(int __always_unused irq
, void *data
)
4148 struct net_device
*netdev
= data
;
4149 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4150 struct e1000_hw
*hw
= &adapter
->hw
;
4151 u32 icr
= er32(ICR
);
4153 e_dbg("icr is %08X\n", icr
);
4154 if (icr
& E1000_ICR_RXSEQ
) {
4155 adapter
->flags
&= ~FLAG_MSI_TEST_FAILED
;
4156 /* Force memory writes to complete before acknowledging the
4157 * interrupt is handled.
4166 * e1000_test_msi_interrupt - Returns 0 for successful test
4167 * @adapter: board private struct
4169 * code flow taken from tg3.c
4171 static int e1000_test_msi_interrupt(struct e1000_adapter
*adapter
)
4173 struct net_device
*netdev
= adapter
->netdev
;
4174 struct e1000_hw
*hw
= &adapter
->hw
;
4177 /* poll_enable hasn't been called yet, so don't need disable */
4178 /* clear any pending events */
4181 /* free the real vector and request a test handler */
4182 e1000_free_irq(adapter
);
4183 e1000e_reset_interrupt_capability(adapter
);
4185 /* Assume that the test fails, if it succeeds then the test
4186 * MSI irq handler will unset this flag
4188 adapter
->flags
|= FLAG_MSI_TEST_FAILED
;
4190 err
= pci_enable_msi(adapter
->pdev
);
4192 goto msi_test_failed
;
4194 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi_test
, 0,
4195 netdev
->name
, netdev
);
4197 pci_disable_msi(adapter
->pdev
);
4198 goto msi_test_failed
;
4201 /* Force memory writes to complete before enabling and firing an
4206 e1000_irq_enable(adapter
);
4208 /* fire an unusual interrupt on the test handler */
4209 ew32(ICS
, E1000_ICS_RXSEQ
);
4213 e1000_irq_disable(adapter
);
4215 rmb(); /* read flags after interrupt has been fired */
4217 if (adapter
->flags
& FLAG_MSI_TEST_FAILED
) {
4218 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
4219 e_info("MSI interrupt test failed, using legacy interrupt.\n");
4221 e_dbg("MSI interrupt test succeeded!\n");
4224 free_irq(adapter
->pdev
->irq
, netdev
);
4225 pci_disable_msi(adapter
->pdev
);
4228 e1000e_set_interrupt_capability(adapter
);
4229 return e1000_request_irq(adapter
);
4233 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
4234 * @adapter: board private struct
4236 * code flow taken from tg3.c, called with e1000 interrupts disabled.
4238 static int e1000_test_msi(struct e1000_adapter
*adapter
)
4243 if (!(adapter
->flags
& FLAG_MSI_ENABLED
))
4246 /* disable SERR in case the MSI write causes a master abort */
4247 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
4248 if (pci_cmd
& PCI_COMMAND_SERR
)
4249 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
,
4250 pci_cmd
& ~PCI_COMMAND_SERR
);
4252 err
= e1000_test_msi_interrupt(adapter
);
4254 /* re-enable SERR */
4255 if (pci_cmd
& PCI_COMMAND_SERR
) {
4256 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
4257 pci_cmd
|= PCI_COMMAND_SERR
;
4258 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
, pci_cmd
);
4265 * e1000_open - Called when a network interface is made active
4266 * @netdev: network interface device structure
4268 * Returns 0 on success, negative value on failure
4270 * The open entry point is called when a network interface is made
4271 * active by the system (IFF_UP). At this point all resources needed
4272 * for transmit and receive operations are allocated, the interrupt
4273 * handler is registered with the OS, the watchdog timer is started,
4274 * and the stack is notified that the interface is ready.
4276 static int e1000_open(struct net_device
*netdev
)
4278 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4279 struct e1000_hw
*hw
= &adapter
->hw
;
4280 struct pci_dev
*pdev
= adapter
->pdev
;
4283 /* disallow open during test */
4284 if (test_bit(__E1000_TESTING
, &adapter
->state
))
4287 pm_runtime_get_sync(&pdev
->dev
);
4289 netif_carrier_off(netdev
);
4291 /* allocate transmit descriptors */
4292 err
= e1000e_setup_tx_resources(adapter
->tx_ring
);
4296 /* allocate receive descriptors */
4297 err
= e1000e_setup_rx_resources(adapter
->rx_ring
);
4301 /* If AMT is enabled, let the firmware know that the network
4302 * interface is now open and reset the part to a known state.
4304 if (adapter
->flags
& FLAG_HAS_AMT
) {
4305 e1000e_get_hw_control(adapter
);
4306 e1000e_reset(adapter
);
4309 e1000e_power_up_phy(adapter
);
4311 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4312 if ((adapter
->hw
.mng_cookie
.status
& E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
4313 e1000_update_mng_vlan(adapter
);
4315 /* DMA latency requirement to workaround jumbo issue */
4316 pm_qos_add_request(&adapter
->netdev
->pm_qos_req
, PM_QOS_CPU_DMA_LATENCY
,
4317 PM_QOS_DEFAULT_VALUE
);
4319 /* before we allocate an interrupt, we must be ready to handle it.
4320 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
4321 * as soon as we call pci_request_irq, so we have to setup our
4322 * clean_rx handler before we do so.
4324 e1000_configure(adapter
);
4326 err
= e1000_request_irq(adapter
);
4330 /* Work around PCIe errata with MSI interrupts causing some chipsets to
4331 * ignore e1000e MSI messages, which means we need to test our MSI
4334 if (adapter
->int_mode
!= E1000E_INT_MODE_LEGACY
) {
4335 err
= e1000_test_msi(adapter
);
4337 e_err("Interrupt allocation failed\n");
4342 /* From here on the code is the same as e1000e_up() */
4343 clear_bit(__E1000_DOWN
, &adapter
->state
);
4345 napi_enable(&adapter
->napi
);
4347 e1000_irq_enable(adapter
);
4349 adapter
->tx_hang_recheck
= false;
4350 netif_start_queue(netdev
);
4352 hw
->mac
.get_link_status
= true;
4353 pm_runtime_put(&pdev
->dev
);
4355 /* fire a link status change interrupt to start the watchdog */
4356 if (adapter
->msix_entries
)
4357 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
4359 ew32(ICS
, E1000_ICS_LSC
);
4364 e1000e_release_hw_control(adapter
);
4365 e1000_power_down_phy(adapter
);
4366 e1000e_free_rx_resources(adapter
->rx_ring
);
4368 e1000e_free_tx_resources(adapter
->tx_ring
);
4370 e1000e_reset(adapter
);
4371 pm_runtime_put_sync(&pdev
->dev
);
4377 * e1000_close - Disables a network interface
4378 * @netdev: network interface device structure
4380 * Returns 0, this is not allowed to fail
4382 * The close entry point is called when an interface is de-activated
4383 * by the OS. The hardware is still under the drivers control, but
4384 * needs to be disabled. A global MAC reset is issued to stop the
4385 * hardware, and all transmit and receive resources are freed.
4387 static int e1000_close(struct net_device
*netdev
)
4389 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4390 struct pci_dev
*pdev
= adapter
->pdev
;
4391 int count
= E1000_CHECK_RESET_COUNT
;
4393 while (test_bit(__E1000_RESETTING
, &adapter
->state
) && count
--)
4394 usleep_range(10000, 20000);
4396 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
4398 pm_runtime_get_sync(&pdev
->dev
);
4400 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
4401 e1000e_down(adapter
, true);
4402 e1000_free_irq(adapter
);
4404 /* Link status message must follow this format */
4405 pr_info("%s NIC Link is Down\n", adapter
->netdev
->name
);
4408 napi_disable(&adapter
->napi
);
4410 e1000e_free_tx_resources(adapter
->tx_ring
);
4411 e1000e_free_rx_resources(adapter
->rx_ring
);
4413 /* kill manageability vlan ID if supported, but not if a vlan with
4414 * the same ID is registered on the host OS (let 8021q kill it)
4416 if (adapter
->hw
.mng_cookie
.status
& E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)
4417 e1000_vlan_rx_kill_vid(netdev
, htons(ETH_P_8021Q
),
4418 adapter
->mng_vlan_id
);
4420 /* If AMT is enabled, let the firmware know that the network
4421 * interface is now closed
4423 if ((adapter
->flags
& FLAG_HAS_AMT
) &&
4424 !test_bit(__E1000_TESTING
, &adapter
->state
))
4425 e1000e_release_hw_control(adapter
);
4427 pm_qos_remove_request(&adapter
->netdev
->pm_qos_req
);
4429 pm_runtime_put_sync(&pdev
->dev
);
4435 * e1000_set_mac - Change the Ethernet Address of the NIC
4436 * @netdev: network interface device structure
4437 * @p: pointer to an address structure
4439 * Returns 0 on success, negative on failure
4441 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
4443 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4444 struct e1000_hw
*hw
= &adapter
->hw
;
4445 struct sockaddr
*addr
= p
;
4447 if (!is_valid_ether_addr(addr
->sa_data
))
4448 return -EADDRNOTAVAIL
;
4450 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
4451 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
4453 hw
->mac
.ops
.rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
4455 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
4456 /* activate the work around */
4457 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
4459 /* Hold a copy of the LAA in RAR[14] This is done so that
4460 * between the time RAR[0] gets clobbered and the time it
4461 * gets fixed (in e1000_watchdog), the actual LAA is in one
4462 * of the RARs and no incoming packets directed to this port
4463 * are dropped. Eventually the LAA will be in RAR[0] and
4466 hw
->mac
.ops
.rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
,
4467 adapter
->hw
.mac
.rar_entry_count
- 1);
4474 * e1000e_update_phy_task - work thread to update phy
4475 * @work: pointer to our work struct
4477 * this worker thread exists because we must acquire a
4478 * semaphore to read the phy, which we could msleep while
4479 * waiting for it, and we can't msleep in a timer.
4481 static void e1000e_update_phy_task(struct work_struct
*work
)
4483 struct e1000_adapter
*adapter
= container_of(work
,
4484 struct e1000_adapter
,
4486 struct e1000_hw
*hw
= &adapter
->hw
;
4488 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4491 e1000_get_phy_info(hw
);
4493 /* Enable EEE on 82579 after link up */
4494 if (hw
->phy
.type
== e1000_phy_82579
)
4495 e1000_set_eee_pchlan(hw
);
4499 * e1000_update_phy_info - timre call-back to update PHY info
4500 * @data: pointer to adapter cast into an unsigned long
4502 * Need to wait a few seconds after link up to get diagnostic information from
4505 static void e1000_update_phy_info(unsigned long data
)
4507 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
4509 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4512 schedule_work(&adapter
->update_phy_task
);
4516 * e1000e_update_phy_stats - Update the PHY statistics counters
4517 * @adapter: board private structure
4519 * Read/clear the upper 16-bit PHY registers and read/accumulate lower
4521 static void e1000e_update_phy_stats(struct e1000_adapter
*adapter
)
4523 struct e1000_hw
*hw
= &adapter
->hw
;
4527 ret_val
= hw
->phy
.ops
.acquire(hw
);
4531 /* A page set is expensive so check if already on desired page.
4532 * If not, set to the page with the PHY status registers.
4535 ret_val
= e1000e_read_phy_reg_mdic(hw
, IGP01E1000_PHY_PAGE_SELECT
,
4539 if (phy_data
!= (HV_STATS_PAGE
<< IGP_PAGE_SHIFT
)) {
4540 ret_val
= hw
->phy
.ops
.set_page(hw
,
4541 HV_STATS_PAGE
<< IGP_PAGE_SHIFT
);
4546 /* Single Collision Count */
4547 hw
->phy
.ops
.read_reg_page(hw
, HV_SCC_UPPER
, &phy_data
);
4548 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_SCC_LOWER
, &phy_data
);
4550 adapter
->stats
.scc
+= phy_data
;
4552 /* Excessive Collision Count */
4553 hw
->phy
.ops
.read_reg_page(hw
, HV_ECOL_UPPER
, &phy_data
);
4554 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_ECOL_LOWER
, &phy_data
);
4556 adapter
->stats
.ecol
+= phy_data
;
4558 /* Multiple Collision Count */
4559 hw
->phy
.ops
.read_reg_page(hw
, HV_MCC_UPPER
, &phy_data
);
4560 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_MCC_LOWER
, &phy_data
);
4562 adapter
->stats
.mcc
+= phy_data
;
4564 /* Late Collision Count */
4565 hw
->phy
.ops
.read_reg_page(hw
, HV_LATECOL_UPPER
, &phy_data
);
4566 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_LATECOL_LOWER
, &phy_data
);
4568 adapter
->stats
.latecol
+= phy_data
;
4570 /* Collision Count - also used for adaptive IFS */
4571 hw
->phy
.ops
.read_reg_page(hw
, HV_COLC_UPPER
, &phy_data
);
4572 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_COLC_LOWER
, &phy_data
);
4574 hw
->mac
.collision_delta
= phy_data
;
4577 hw
->phy
.ops
.read_reg_page(hw
, HV_DC_UPPER
, &phy_data
);
4578 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_DC_LOWER
, &phy_data
);
4580 adapter
->stats
.dc
+= phy_data
;
4582 /* Transmit with no CRS */
4583 hw
->phy
.ops
.read_reg_page(hw
, HV_TNCRS_UPPER
, &phy_data
);
4584 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_TNCRS_LOWER
, &phy_data
);
4586 adapter
->stats
.tncrs
+= phy_data
;
4589 hw
->phy
.ops
.release(hw
);
4593 * e1000e_update_stats - Update the board statistics counters
4594 * @adapter: board private structure
4596 static void e1000e_update_stats(struct e1000_adapter
*adapter
)
4598 struct net_device
*netdev
= adapter
->netdev
;
4599 struct e1000_hw
*hw
= &adapter
->hw
;
4600 struct pci_dev
*pdev
= adapter
->pdev
;
4602 /* Prevent stats update while adapter is being reset, or if the pci
4603 * connection is down.
4605 if (adapter
->link_speed
== 0)
4607 if (pci_channel_offline(pdev
))
4610 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
4611 adapter
->stats
.gprc
+= er32(GPRC
);
4612 adapter
->stats
.gorc
+= er32(GORCL
);
4613 er32(GORCH
); /* Clear gorc */
4614 adapter
->stats
.bprc
+= er32(BPRC
);
4615 adapter
->stats
.mprc
+= er32(MPRC
);
4616 adapter
->stats
.roc
+= er32(ROC
);
4618 adapter
->stats
.mpc
+= er32(MPC
);
4620 /* Half-duplex statistics */
4621 if (adapter
->link_duplex
== HALF_DUPLEX
) {
4622 if (adapter
->flags2
& FLAG2_HAS_PHY_STATS
) {
4623 e1000e_update_phy_stats(adapter
);
4625 adapter
->stats
.scc
+= er32(SCC
);
4626 adapter
->stats
.ecol
+= er32(ECOL
);
4627 adapter
->stats
.mcc
+= er32(MCC
);
4628 adapter
->stats
.latecol
+= er32(LATECOL
);
4629 adapter
->stats
.dc
+= er32(DC
);
4631 hw
->mac
.collision_delta
= er32(COLC
);
4633 if ((hw
->mac
.type
!= e1000_82574
) &&
4634 (hw
->mac
.type
!= e1000_82583
))
4635 adapter
->stats
.tncrs
+= er32(TNCRS
);
4637 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
4640 adapter
->stats
.xonrxc
+= er32(XONRXC
);
4641 adapter
->stats
.xontxc
+= er32(XONTXC
);
4642 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
4643 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
4644 adapter
->stats
.gptc
+= er32(GPTC
);
4645 adapter
->stats
.gotc
+= er32(GOTCL
);
4646 er32(GOTCH
); /* Clear gotc */
4647 adapter
->stats
.rnbc
+= er32(RNBC
);
4648 adapter
->stats
.ruc
+= er32(RUC
);
4650 adapter
->stats
.mptc
+= er32(MPTC
);
4651 adapter
->stats
.bptc
+= er32(BPTC
);
4653 /* used for adaptive IFS */
4655 hw
->mac
.tx_packet_delta
= er32(TPT
);
4656 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
4658 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
4659 adapter
->stats
.rxerrc
+= er32(RXERRC
);
4660 adapter
->stats
.cexterr
+= er32(CEXTERR
);
4661 adapter
->stats
.tsctc
+= er32(TSCTC
);
4662 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
4664 /* Fill out the OS statistics structure */
4665 netdev
->stats
.multicast
= adapter
->stats
.mprc
;
4666 netdev
->stats
.collisions
= adapter
->stats
.colc
;
4670 /* RLEC on some newer hardware can be incorrect so build
4671 * our own version based on RUC and ROC
4673 netdev
->stats
.rx_errors
= adapter
->stats
.rxerrc
+
4674 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
4675 adapter
->stats
.ruc
+ adapter
->stats
.roc
+ adapter
->stats
.cexterr
;
4676 netdev
->stats
.rx_length_errors
= adapter
->stats
.ruc
+
4678 netdev
->stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
4679 netdev
->stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
4680 netdev
->stats
.rx_missed_errors
= adapter
->stats
.mpc
;
4683 netdev
->stats
.tx_errors
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
4684 netdev
->stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
4685 netdev
->stats
.tx_window_errors
= adapter
->stats
.latecol
;
4686 netdev
->stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
4688 /* Tx Dropped needs to be maintained elsewhere */
4690 /* Management Stats */
4691 adapter
->stats
.mgptc
+= er32(MGTPTC
);
4692 adapter
->stats
.mgprc
+= er32(MGTPRC
);
4693 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
4695 /* Correctable ECC Errors */
4696 if (hw
->mac
.type
== e1000_pch_lpt
) {
4697 u32 pbeccsts
= er32(PBECCSTS
);
4698 adapter
->corr_errors
+=
4699 pbeccsts
& E1000_PBECCSTS_CORR_ERR_CNT_MASK
;
4700 adapter
->uncorr_errors
+=
4701 (pbeccsts
& E1000_PBECCSTS_UNCORR_ERR_CNT_MASK
) >>
4702 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT
;
4707 * e1000_phy_read_status - Update the PHY register status snapshot
4708 * @adapter: board private structure
4710 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
4712 struct e1000_hw
*hw
= &adapter
->hw
;
4713 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
4715 if (!pm_runtime_suspended((&adapter
->pdev
->dev
)->parent
) &&
4716 (er32(STATUS
) & E1000_STATUS_LU
) &&
4717 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
4720 ret_val
= e1e_rphy(hw
, MII_BMCR
, &phy
->bmcr
);
4721 ret_val
|= e1e_rphy(hw
, MII_BMSR
, &phy
->bmsr
);
4722 ret_val
|= e1e_rphy(hw
, MII_ADVERTISE
, &phy
->advertise
);
4723 ret_val
|= e1e_rphy(hw
, MII_LPA
, &phy
->lpa
);
4724 ret_val
|= e1e_rphy(hw
, MII_EXPANSION
, &phy
->expansion
);
4725 ret_val
|= e1e_rphy(hw
, MII_CTRL1000
, &phy
->ctrl1000
);
4726 ret_val
|= e1e_rphy(hw
, MII_STAT1000
, &phy
->stat1000
);
4727 ret_val
|= e1e_rphy(hw
, MII_ESTATUS
, &phy
->estatus
);
4729 e_warn("Error reading PHY register\n");
4731 /* Do not read PHY registers if link is not up
4732 * Set values to typical power-on defaults
4734 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
4735 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
4736 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
4738 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
4739 ADVERTISE_ALL
| ADVERTISE_CSMA
);
4741 phy
->expansion
= EXPANSION_ENABLENPAGE
;
4742 phy
->ctrl1000
= ADVERTISE_1000FULL
;
4744 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
4748 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
4750 struct e1000_hw
*hw
= &adapter
->hw
;
4751 u32 ctrl
= er32(CTRL
);
4753 /* Link status message must follow this format for user tools */
4754 pr_info("%s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n",
4755 adapter
->netdev
->name
, adapter
->link_speed
,
4756 adapter
->link_duplex
== FULL_DUPLEX
? "Full" : "Half",
4757 (ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
) ? "Rx/Tx" :
4758 (ctrl
& E1000_CTRL_RFCE
) ? "Rx" :
4759 (ctrl
& E1000_CTRL_TFCE
) ? "Tx" : "None");
4762 static bool e1000e_has_link(struct e1000_adapter
*adapter
)
4764 struct e1000_hw
*hw
= &adapter
->hw
;
4765 bool link_active
= false;
4768 /* get_link_status is set on LSC (link status) interrupt or
4769 * Rx sequence error interrupt. get_link_status will stay
4770 * false until the check_for_link establishes link
4771 * for copper adapters ONLY
4773 switch (hw
->phy
.media_type
) {
4774 case e1000_media_type_copper
:
4775 if (hw
->mac
.get_link_status
) {
4776 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4777 link_active
= !hw
->mac
.get_link_status
;
4782 case e1000_media_type_fiber
:
4783 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4784 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
4786 case e1000_media_type_internal_serdes
:
4787 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4788 link_active
= adapter
->hw
.mac
.serdes_has_link
;
4791 case e1000_media_type_unknown
:
4795 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
4796 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
4797 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
4798 e_info("Gigabit has been disabled, downgrading speed\n");
4804 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
4806 /* make sure the receive unit is started */
4807 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
4808 (adapter
->flags
& FLAG_RESTART_NOW
)) {
4809 struct e1000_hw
*hw
= &adapter
->hw
;
4810 u32 rctl
= er32(RCTL
);
4811 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
4812 adapter
->flags
&= ~FLAG_RESTART_NOW
;
4816 static void e1000e_check_82574_phy_workaround(struct e1000_adapter
*adapter
)
4818 struct e1000_hw
*hw
= &adapter
->hw
;
4820 /* With 82574 controllers, PHY needs to be checked periodically
4821 * for hung state and reset, if two calls return true
4823 if (e1000_check_phy_82574(hw
))
4824 adapter
->phy_hang_count
++;
4826 adapter
->phy_hang_count
= 0;
4828 if (adapter
->phy_hang_count
> 1) {
4829 adapter
->phy_hang_count
= 0;
4830 e_dbg("PHY appears hung - resetting\n");
4831 schedule_work(&adapter
->reset_task
);
4836 * e1000_watchdog - Timer Call-back
4837 * @data: pointer to adapter cast into an unsigned long
4839 static void e1000_watchdog(unsigned long data
)
4841 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
4843 /* Do the rest outside of interrupt context */
4844 schedule_work(&adapter
->watchdog_task
);
4846 /* TODO: make this use queue_delayed_work() */
4849 static void e1000_watchdog_task(struct work_struct
*work
)
4851 struct e1000_adapter
*adapter
= container_of(work
,
4852 struct e1000_adapter
,
4854 struct net_device
*netdev
= adapter
->netdev
;
4855 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
4856 struct e1000_phy_info
*phy
= &adapter
->hw
.phy
;
4857 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4858 struct e1000_hw
*hw
= &adapter
->hw
;
4861 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4864 link
= e1000e_has_link(adapter
);
4865 if ((netif_carrier_ok(netdev
)) && link
) {
4866 /* Cancel scheduled suspend requests. */
4867 pm_runtime_resume(netdev
->dev
.parent
);
4869 e1000e_enable_receives(adapter
);
4873 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
4874 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
4875 e1000_update_mng_vlan(adapter
);
4878 if (!netif_carrier_ok(netdev
)) {
4881 /* Cancel scheduled suspend requests. */
4882 pm_runtime_resume(netdev
->dev
.parent
);
4884 /* update snapshot of PHY registers on LSC */
4885 e1000_phy_read_status(adapter
);
4886 mac
->ops
.get_link_up_info(&adapter
->hw
,
4887 &adapter
->link_speed
,
4888 &adapter
->link_duplex
);
4889 e1000_print_link_info(adapter
);
4891 /* check if SmartSpeed worked */
4892 e1000e_check_downshift(hw
);
4893 if (phy
->speed_downgraded
)
4895 "Link Speed was downgraded by SmartSpeed\n");
4897 /* On supported PHYs, check for duplex mismatch only
4898 * if link has autonegotiated at 10/100 half
4900 if ((hw
->phy
.type
== e1000_phy_igp_3
||
4901 hw
->phy
.type
== e1000_phy_bm
) &&
4903 (adapter
->link_speed
== SPEED_10
||
4904 adapter
->link_speed
== SPEED_100
) &&
4905 (adapter
->link_duplex
== HALF_DUPLEX
)) {
4908 e1e_rphy(hw
, MII_EXPANSION
, &autoneg_exp
);
4910 if (!(autoneg_exp
& EXPANSION_NWAY
))
4911 e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n");
4914 /* adjust timeout factor according to speed/duplex */
4915 adapter
->tx_timeout_factor
= 1;
4916 switch (adapter
->link_speed
) {
4919 adapter
->tx_timeout_factor
= 16;
4923 adapter
->tx_timeout_factor
= 10;
4927 /* workaround: re-program speed mode bit after
4930 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
4933 tarc0
= er32(TARC(0));
4934 tarc0
&= ~SPEED_MODE_BIT
;
4935 ew32(TARC(0), tarc0
);
4938 /* disable TSO for pcie and 10/100 speeds, to avoid
4939 * some hardware issues
4941 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
4942 switch (adapter
->link_speed
) {
4945 e_info("10/100 speed: disabling TSO\n");
4946 netdev
->features
&= ~NETIF_F_TSO
;
4947 netdev
->features
&= ~NETIF_F_TSO6
;
4950 netdev
->features
|= NETIF_F_TSO
;
4951 netdev
->features
|= NETIF_F_TSO6
;
4959 /* enable transmits in the hardware, need to do this
4960 * after setting TARC(0)
4963 tctl
|= E1000_TCTL_EN
;
4966 /* Perform any post-link-up configuration before
4967 * reporting link up.
4969 if (phy
->ops
.cfg_on_link_up
)
4970 phy
->ops
.cfg_on_link_up(hw
);
4972 netif_carrier_on(netdev
);
4974 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4975 mod_timer(&adapter
->phy_info_timer
,
4976 round_jiffies(jiffies
+ 2 * HZ
));
4979 if (netif_carrier_ok(netdev
)) {
4980 adapter
->link_speed
= 0;
4981 adapter
->link_duplex
= 0;
4982 /* Link status message must follow this format */
4983 pr_info("%s NIC Link is Down\n", adapter
->netdev
->name
);
4984 netif_carrier_off(netdev
);
4985 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4986 mod_timer(&adapter
->phy_info_timer
,
4987 round_jiffies(jiffies
+ 2 * HZ
));
4989 /* 8000ES2LAN requires a Rx packet buffer work-around
4990 * on link down event; reset the controller to flush
4991 * the Rx packet buffer.
4993 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
4994 adapter
->flags
|= FLAG_RESTART_NOW
;
4996 pm_schedule_suspend(netdev
->dev
.parent
,
5002 spin_lock(&adapter
->stats64_lock
);
5003 e1000e_update_stats(adapter
);
5005 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
5006 adapter
->tpt_old
= adapter
->stats
.tpt
;
5007 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
5008 adapter
->colc_old
= adapter
->stats
.colc
;
5010 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
5011 adapter
->gorc_old
= adapter
->stats
.gorc
;
5012 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
5013 adapter
->gotc_old
= adapter
->stats
.gotc
;
5014 spin_unlock(&adapter
->stats64_lock
);
5016 /* If the link is lost the controller stops DMA, but
5017 * if there is queued Tx work it cannot be done. So
5018 * reset the controller to flush the Tx packet buffers.
5020 if (!netif_carrier_ok(netdev
) &&
5021 (e1000_desc_unused(tx_ring
) + 1 < tx_ring
->count
))
5022 adapter
->flags
|= FLAG_RESTART_NOW
;
5024 /* If reset is necessary, do it outside of interrupt context. */
5025 if (adapter
->flags
& FLAG_RESTART_NOW
) {
5026 schedule_work(&adapter
->reset_task
);
5027 /* return immediately since reset is imminent */
5031 e1000e_update_adaptive(&adapter
->hw
);
5033 /* Simple mode for Interrupt Throttle Rate (ITR) */
5034 if (adapter
->itr_setting
== 4) {
5035 /* Symmetric Tx/Rx gets a reduced ITR=2000;
5036 * Total asymmetrical Tx or Rx gets ITR=8000;
5037 * everyone else is between 2000-8000.
5039 u32 goc
= (adapter
->gotc
+ adapter
->gorc
) / 10000;
5040 u32 dif
= (adapter
->gotc
> adapter
->gorc
?
5041 adapter
->gotc
- adapter
->gorc
:
5042 adapter
->gorc
- adapter
->gotc
) / 10000;
5043 u32 itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
5045 e1000e_write_itr(adapter
, itr
);
5048 /* Cause software interrupt to ensure Rx ring is cleaned */
5049 if (adapter
->msix_entries
)
5050 ew32(ICS
, adapter
->rx_ring
->ims_val
);
5052 ew32(ICS
, E1000_ICS_RXDMT0
);
5054 /* flush pending descriptors to memory before detecting Tx hang */
5055 e1000e_flush_descriptors(adapter
);
5057 /* Force detection of hung controller every watchdog period */
5058 adapter
->detect_tx_hung
= true;
5060 /* With 82571 controllers, LAA may be overwritten due to controller
5061 * reset from the other port. Set the appropriate LAA in RAR[0]
5063 if (e1000e_get_laa_state_82571(hw
))
5064 hw
->mac
.ops
.rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
5066 if (adapter
->flags2
& FLAG2_CHECK_PHY_HANG
)
5067 e1000e_check_82574_phy_workaround(adapter
);
5069 /* Clear valid timestamp stuck in RXSTMPL/H due to a Rx error */
5070 if (adapter
->hwtstamp_config
.rx_filter
!= HWTSTAMP_FILTER_NONE
) {
5071 if ((adapter
->flags2
& FLAG2_CHECK_RX_HWTSTAMP
) &&
5072 (er32(TSYNCRXCTL
) & E1000_TSYNCRXCTL_VALID
)) {
5074 adapter
->rx_hwtstamp_cleared
++;
5076 adapter
->flags2
|= FLAG2_CHECK_RX_HWTSTAMP
;
5080 /* Reset the timer */
5081 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
5082 mod_timer(&adapter
->watchdog_timer
,
5083 round_jiffies(jiffies
+ 2 * HZ
));
5086 #define E1000_TX_FLAGS_CSUM 0x00000001
5087 #define E1000_TX_FLAGS_VLAN 0x00000002
5088 #define E1000_TX_FLAGS_TSO 0x00000004
5089 #define E1000_TX_FLAGS_IPV4 0x00000008
5090 #define E1000_TX_FLAGS_NO_FCS 0x00000010
5091 #define E1000_TX_FLAGS_HWTSTAMP 0x00000020
5092 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
5093 #define E1000_TX_FLAGS_VLAN_SHIFT 16
5095 static int e1000_tso(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
)
5097 struct e1000_context_desc
*context_desc
;
5098 struct e1000_buffer
*buffer_info
;
5102 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
5104 if (!skb_is_gso(skb
))
5107 if (skb_header_cloned(skb
)) {
5108 int err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
5114 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
5115 mss
= skb_shinfo(skb
)->gso_size
;
5116 if (skb
->protocol
== htons(ETH_P_IP
)) {
5117 struct iphdr
*iph
= ip_hdr(skb
);
5120 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
, iph
->daddr
,
5122 cmd_length
= E1000_TXD_CMD_IP
;
5123 ipcse
= skb_transport_offset(skb
) - 1;
5124 } else if (skb_is_gso_v6(skb
)) {
5125 ipv6_hdr(skb
)->payload_len
= 0;
5126 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
5127 &ipv6_hdr(skb
)->daddr
,
5131 ipcss
= skb_network_offset(skb
);
5132 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
5133 tucss
= skb_transport_offset(skb
);
5134 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
5136 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
5137 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
5139 i
= tx_ring
->next_to_use
;
5140 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
5141 buffer_info
= &tx_ring
->buffer_info
[i
];
5143 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
5144 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
5145 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
5146 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
5147 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
5148 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
5149 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
5150 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
5151 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
5153 buffer_info
->time_stamp
= jiffies
;
5154 buffer_info
->next_to_watch
= i
;
5157 if (i
== tx_ring
->count
)
5159 tx_ring
->next_to_use
= i
;
5164 static bool e1000_tx_csum(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
)
5166 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
5167 struct e1000_context_desc
*context_desc
;
5168 struct e1000_buffer
*buffer_info
;
5171 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
5174 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
5177 if (skb
->protocol
== cpu_to_be16(ETH_P_8021Q
))
5178 protocol
= vlan_eth_hdr(skb
)->h_vlan_encapsulated_proto
;
5180 protocol
= skb
->protocol
;
5183 case cpu_to_be16(ETH_P_IP
):
5184 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
5185 cmd_len
|= E1000_TXD_CMD_TCP
;
5187 case cpu_to_be16(ETH_P_IPV6
):
5188 /* XXX not handling all IPV6 headers */
5189 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
5190 cmd_len
|= E1000_TXD_CMD_TCP
;
5193 if (unlikely(net_ratelimit()))
5194 e_warn("checksum_partial proto=%x!\n",
5195 be16_to_cpu(protocol
));
5199 css
= skb_checksum_start_offset(skb
);
5201 i
= tx_ring
->next_to_use
;
5202 buffer_info
= &tx_ring
->buffer_info
[i
];
5203 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
5205 context_desc
->lower_setup
.ip_config
= 0;
5206 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
5207 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum_offset
;
5208 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
5209 context_desc
->tcp_seg_setup
.data
= 0;
5210 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
5212 buffer_info
->time_stamp
= jiffies
;
5213 buffer_info
->next_to_watch
= i
;
5216 if (i
== tx_ring
->count
)
5218 tx_ring
->next_to_use
= i
;
5223 static int e1000_tx_map(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
,
5224 unsigned int first
, unsigned int max_per_txd
,
5225 unsigned int nr_frags
)
5227 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
5228 struct pci_dev
*pdev
= adapter
->pdev
;
5229 struct e1000_buffer
*buffer_info
;
5230 unsigned int len
= skb_headlen(skb
);
5231 unsigned int offset
= 0, size
, count
= 0, i
;
5232 unsigned int f
, bytecount
, segs
;
5234 i
= tx_ring
->next_to_use
;
5237 buffer_info
= &tx_ring
->buffer_info
[i
];
5238 size
= min(len
, max_per_txd
);
5240 buffer_info
->length
= size
;
5241 buffer_info
->time_stamp
= jiffies
;
5242 buffer_info
->next_to_watch
= i
;
5243 buffer_info
->dma
= dma_map_single(&pdev
->dev
,
5245 size
, DMA_TO_DEVICE
);
5246 buffer_info
->mapped_as_page
= false;
5247 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
5256 if (i
== tx_ring
->count
)
5261 for (f
= 0; f
< nr_frags
; f
++) {
5262 const struct skb_frag_struct
*frag
;
5264 frag
= &skb_shinfo(skb
)->frags
[f
];
5265 len
= skb_frag_size(frag
);
5270 if (i
== tx_ring
->count
)
5273 buffer_info
= &tx_ring
->buffer_info
[i
];
5274 size
= min(len
, max_per_txd
);
5276 buffer_info
->length
= size
;
5277 buffer_info
->time_stamp
= jiffies
;
5278 buffer_info
->next_to_watch
= i
;
5279 buffer_info
->dma
= skb_frag_dma_map(&pdev
->dev
, frag
,
5282 buffer_info
->mapped_as_page
= true;
5283 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
5292 segs
= skb_shinfo(skb
)->gso_segs
? : 1;
5293 /* multiply data chunks by size of headers */
5294 bytecount
= ((segs
- 1) * skb_headlen(skb
)) + skb
->len
;
5296 tx_ring
->buffer_info
[i
].skb
= skb
;
5297 tx_ring
->buffer_info
[i
].segs
= segs
;
5298 tx_ring
->buffer_info
[i
].bytecount
= bytecount
;
5299 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
5304 dev_err(&pdev
->dev
, "Tx DMA map failed\n");
5305 buffer_info
->dma
= 0;
5311 i
+= tx_ring
->count
;
5313 buffer_info
= &tx_ring
->buffer_info
[i
];
5314 e1000_put_txbuf(tx_ring
, buffer_info
);
5320 static void e1000_tx_queue(struct e1000_ring
*tx_ring
, int tx_flags
, int count
)
5322 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
5323 struct e1000_tx_desc
*tx_desc
= NULL
;
5324 struct e1000_buffer
*buffer_info
;
5325 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
5328 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
5329 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
5331 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
5333 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
5334 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
5337 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
5338 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
5339 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
5342 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
5343 txd_lower
|= E1000_TXD_CMD_VLE
;
5344 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
5347 if (unlikely(tx_flags
& E1000_TX_FLAGS_NO_FCS
))
5348 txd_lower
&= ~(E1000_TXD_CMD_IFCS
);
5350 if (unlikely(tx_flags
& E1000_TX_FLAGS_HWTSTAMP
)) {
5351 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
5352 txd_upper
|= E1000_TXD_EXTCMD_TSTAMP
;
5355 i
= tx_ring
->next_to_use
;
5358 buffer_info
= &tx_ring
->buffer_info
[i
];
5359 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
5360 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
5361 tx_desc
->lower
.data
= cpu_to_le32(txd_lower
|
5362 buffer_info
->length
);
5363 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
5366 if (i
== tx_ring
->count
)
5368 } while (--count
> 0);
5370 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
5372 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */
5373 if (unlikely(tx_flags
& E1000_TX_FLAGS_NO_FCS
))
5374 tx_desc
->lower
.data
&= ~(cpu_to_le32(E1000_TXD_CMD_IFCS
));
5376 /* Force memory writes to complete before letting h/w
5377 * know there are new descriptors to fetch. (Only
5378 * applicable for weak-ordered memory model archs,
5383 tx_ring
->next_to_use
= i
;
5385 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
5386 e1000e_update_tdt_wa(tx_ring
, i
);
5388 writel(i
, tx_ring
->tail
);
5390 /* we need this if more than one processor can write to our tail
5391 * at a time, it synchronizes IO on IA64/Altix systems
5396 #define MINIMUM_DHCP_PACKET_SIZE 282
5397 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
5398 struct sk_buff
*skb
)
5400 struct e1000_hw
*hw
= &adapter
->hw
;
5403 if (vlan_tx_tag_present(skb
) &&
5404 !((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
5405 (adapter
->hw
.mng_cookie
.status
&
5406 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
5409 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
5412 if (((struct ethhdr
*)skb
->data
)->h_proto
!= htons(ETH_P_IP
))
5416 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+ 14);
5419 if (ip
->protocol
!= IPPROTO_UDP
)
5422 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
5423 if (ntohs(udp
->dest
) != 67)
5426 offset
= (u8
*)udp
+ 8 - skb
->data
;
5427 length
= skb
->len
- offset
;
5428 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
5434 static int __e1000_maybe_stop_tx(struct e1000_ring
*tx_ring
, int size
)
5436 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
5438 netif_stop_queue(adapter
->netdev
);
5439 /* Herbert's original patch had:
5440 * smp_mb__after_netif_stop_queue();
5441 * but since that doesn't exist yet, just open code it.
5445 /* We need to check again in a case another CPU has just
5446 * made room available.
5448 if (e1000_desc_unused(tx_ring
) < size
)
5452 netif_start_queue(adapter
->netdev
);
5453 ++adapter
->restart_queue
;
5457 static int e1000_maybe_stop_tx(struct e1000_ring
*tx_ring
, int size
)
5459 BUG_ON(size
> tx_ring
->count
);
5461 if (e1000_desc_unused(tx_ring
) >= size
)
5463 return __e1000_maybe_stop_tx(tx_ring
, size
);
5466 static netdev_tx_t
e1000_xmit_frame(struct sk_buff
*skb
,
5467 struct net_device
*netdev
)
5469 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5470 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
5472 unsigned int tx_flags
= 0;
5473 unsigned int len
= skb_headlen(skb
);
5474 unsigned int nr_frags
;
5480 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
5481 dev_kfree_skb_any(skb
);
5482 return NETDEV_TX_OK
;
5485 if (skb
->len
<= 0) {
5486 dev_kfree_skb_any(skb
);
5487 return NETDEV_TX_OK
;
5490 /* The minimum packet size with TCTL.PSP set is 17 bytes so
5491 * pad skb in order to meet this minimum size requirement
5493 if (unlikely(skb
->len
< 17)) {
5494 if (skb_pad(skb
, 17 - skb
->len
))
5495 return NETDEV_TX_OK
;
5497 skb_set_tail_pointer(skb
, 17);
5500 mss
= skb_shinfo(skb
)->gso_size
;
5504 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
5505 * points to just header, pull a few bytes of payload from
5506 * frags into skb->data
5508 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
5509 /* we do this workaround for ES2LAN, but it is un-necessary,
5510 * avoiding it could save a lot of cycles
5512 if (skb
->data_len
&& (hdr_len
== len
)) {
5513 unsigned int pull_size
;
5515 pull_size
= min_t(unsigned int, 4, skb
->data_len
);
5516 if (!__pskb_pull_tail(skb
, pull_size
)) {
5517 e_err("__pskb_pull_tail failed.\n");
5518 dev_kfree_skb_any(skb
);
5519 return NETDEV_TX_OK
;
5521 len
= skb_headlen(skb
);
5525 /* reserve a descriptor for the offload context */
5526 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
5530 count
+= DIV_ROUND_UP(len
, adapter
->tx_fifo_limit
);
5532 nr_frags
= skb_shinfo(skb
)->nr_frags
;
5533 for (f
= 0; f
< nr_frags
; f
++)
5534 count
+= DIV_ROUND_UP(skb_frag_size(&skb_shinfo(skb
)->frags
[f
]),
5535 adapter
->tx_fifo_limit
);
5537 if (adapter
->hw
.mac
.tx_pkt_filtering
)
5538 e1000_transfer_dhcp_info(adapter
, skb
);
5540 /* need: count + 2 desc gap to keep tail from touching
5541 * head, otherwise try next time
5543 if (e1000_maybe_stop_tx(tx_ring
, count
+ 2))
5544 return NETDEV_TX_BUSY
;
5546 if (vlan_tx_tag_present(skb
)) {
5547 tx_flags
|= E1000_TX_FLAGS_VLAN
;
5548 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
5551 first
= tx_ring
->next_to_use
;
5553 tso
= e1000_tso(tx_ring
, skb
);
5555 dev_kfree_skb_any(skb
);
5556 return NETDEV_TX_OK
;
5560 tx_flags
|= E1000_TX_FLAGS_TSO
;
5561 else if (e1000_tx_csum(tx_ring
, skb
))
5562 tx_flags
|= E1000_TX_FLAGS_CSUM
;
5564 /* Old method was to assume IPv4 packet by default if TSO was enabled.
5565 * 82571 hardware supports TSO capabilities for IPv6 as well...
5566 * no longer assume, we must.
5568 if (skb
->protocol
== htons(ETH_P_IP
))
5569 tx_flags
|= E1000_TX_FLAGS_IPV4
;
5571 if (unlikely(skb
->no_fcs
))
5572 tx_flags
|= E1000_TX_FLAGS_NO_FCS
;
5574 /* if count is 0 then mapping error has occurred */
5575 count
= e1000_tx_map(tx_ring
, skb
, first
, adapter
->tx_fifo_limit
,
5578 if (unlikely((skb_shinfo(skb
)->tx_flags
& SKBTX_HW_TSTAMP
) &&
5579 !adapter
->tx_hwtstamp_skb
)) {
5580 skb_shinfo(skb
)->tx_flags
|= SKBTX_IN_PROGRESS
;
5581 tx_flags
|= E1000_TX_FLAGS_HWTSTAMP
;
5582 adapter
->tx_hwtstamp_skb
= skb_get(skb
);
5583 adapter
->tx_hwtstamp_start
= jiffies
;
5584 schedule_work(&adapter
->tx_hwtstamp_work
);
5586 skb_tx_timestamp(skb
);
5589 netdev_sent_queue(netdev
, skb
->len
);
5590 e1000_tx_queue(tx_ring
, tx_flags
, count
);
5591 /* Make sure there is space in the ring for the next send. */
5592 e1000_maybe_stop_tx(tx_ring
,
5594 DIV_ROUND_UP(PAGE_SIZE
,
5595 adapter
->tx_fifo_limit
) + 2));
5597 dev_kfree_skb_any(skb
);
5598 tx_ring
->buffer_info
[first
].time_stamp
= 0;
5599 tx_ring
->next_to_use
= first
;
5602 return NETDEV_TX_OK
;
5606 * e1000_tx_timeout - Respond to a Tx Hang
5607 * @netdev: network interface device structure
5609 static void e1000_tx_timeout(struct net_device
*netdev
)
5611 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5613 /* Do the reset outside of interrupt context */
5614 adapter
->tx_timeout_count
++;
5615 schedule_work(&adapter
->reset_task
);
5618 static void e1000_reset_task(struct work_struct
*work
)
5620 struct e1000_adapter
*adapter
;
5621 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
5623 /* don't run the task if already down */
5624 if (test_bit(__E1000_DOWN
, &adapter
->state
))
5627 if (!(adapter
->flags
& FLAG_RESTART_NOW
)) {
5628 e1000e_dump(adapter
);
5629 e_err("Reset adapter unexpectedly\n");
5631 e1000e_reinit_locked(adapter
);
5635 * e1000_get_stats64 - Get System Network Statistics
5636 * @netdev: network interface device structure
5637 * @stats: rtnl_link_stats64 pointer
5639 * Returns the address of the device statistics structure.
5641 struct rtnl_link_stats64
*e1000e_get_stats64(struct net_device
*netdev
,
5642 struct rtnl_link_stats64
*stats
)
5644 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5646 memset(stats
, 0, sizeof(struct rtnl_link_stats64
));
5647 spin_lock(&adapter
->stats64_lock
);
5648 e1000e_update_stats(adapter
);
5649 /* Fill out the OS statistics structure */
5650 stats
->rx_bytes
= adapter
->stats
.gorc
;
5651 stats
->rx_packets
= adapter
->stats
.gprc
;
5652 stats
->tx_bytes
= adapter
->stats
.gotc
;
5653 stats
->tx_packets
= adapter
->stats
.gptc
;
5654 stats
->multicast
= adapter
->stats
.mprc
;
5655 stats
->collisions
= adapter
->stats
.colc
;
5659 /* RLEC on some newer hardware can be incorrect so build
5660 * our own version based on RUC and ROC
5662 stats
->rx_errors
= adapter
->stats
.rxerrc
+
5663 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
5664 adapter
->stats
.ruc
+ adapter
->stats
.roc
+ adapter
->stats
.cexterr
;
5665 stats
->rx_length_errors
= adapter
->stats
.ruc
+ adapter
->stats
.roc
;
5666 stats
->rx_crc_errors
= adapter
->stats
.crcerrs
;
5667 stats
->rx_frame_errors
= adapter
->stats
.algnerrc
;
5668 stats
->rx_missed_errors
= adapter
->stats
.mpc
;
5671 stats
->tx_errors
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
5672 stats
->tx_aborted_errors
= adapter
->stats
.ecol
;
5673 stats
->tx_window_errors
= adapter
->stats
.latecol
;
5674 stats
->tx_carrier_errors
= adapter
->stats
.tncrs
;
5676 /* Tx Dropped needs to be maintained elsewhere */
5678 spin_unlock(&adapter
->stats64_lock
);
5683 * e1000_change_mtu - Change the Maximum Transfer Unit
5684 * @netdev: network interface device structure
5685 * @new_mtu: new value for maximum frame size
5687 * Returns 0 on success, negative on failure
5689 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
5691 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5692 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
5694 /* Jumbo frame support */
5695 if ((max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) &&
5696 !(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
5697 e_err("Jumbo Frames not supported.\n");
5701 /* Supported frame sizes */
5702 if ((new_mtu
< ETH_ZLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
) ||
5703 (max_frame
> adapter
->max_hw_frame_size
)) {
5704 e_err("Unsupported MTU setting\n");
5708 /* Jumbo frame workaround on 82579 and newer requires CRC be stripped */
5709 if ((adapter
->hw
.mac
.type
>= e1000_pch2lan
) &&
5710 !(adapter
->flags2
& FLAG2_CRC_STRIPPING
) &&
5711 (new_mtu
> ETH_DATA_LEN
)) {
5712 e_err("Jumbo Frames not supported on this device when CRC stripping is disabled.\n");
5716 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
5717 usleep_range(1000, 2000);
5718 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
5719 adapter
->max_frame_size
= max_frame
;
5720 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
5721 netdev
->mtu
= new_mtu
;
5723 pm_runtime_get_sync(netdev
->dev
.parent
);
5725 if (netif_running(netdev
))
5726 e1000e_down(adapter
, true);
5728 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
5729 * means we reserve 2 more, this pushes us to allocate from the next
5731 * i.e. RXBUFFER_2048 --> size-4096 slab
5732 * However with the new *_jumbo_rx* routines, jumbo receives will use
5736 if (max_frame
<= 2048)
5737 adapter
->rx_buffer_len
= 2048;
5739 adapter
->rx_buffer_len
= 4096;
5741 /* adjust allocation if LPE protects us, and we aren't using SBP */
5742 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
5743 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
5744 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
5747 if (netif_running(netdev
))
5750 e1000e_reset(adapter
);
5752 pm_runtime_put_sync(netdev
->dev
.parent
);
5754 clear_bit(__E1000_RESETTING
, &adapter
->state
);
5759 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
5762 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5763 struct mii_ioctl_data
*data
= if_mii(ifr
);
5765 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
5770 data
->phy_id
= adapter
->hw
.phy
.addr
;
5773 e1000_phy_read_status(adapter
);
5775 switch (data
->reg_num
& 0x1F) {
5777 data
->val_out
= adapter
->phy_regs
.bmcr
;
5780 data
->val_out
= adapter
->phy_regs
.bmsr
;
5783 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
5786 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
5789 data
->val_out
= adapter
->phy_regs
.advertise
;
5792 data
->val_out
= adapter
->phy_regs
.lpa
;
5795 data
->val_out
= adapter
->phy_regs
.expansion
;
5798 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
5801 data
->val_out
= adapter
->phy_regs
.stat1000
;
5804 data
->val_out
= adapter
->phy_regs
.estatus
;
5818 * e1000e_hwtstamp_ioctl - control hardware time stamping
5819 * @netdev: network interface device structure
5820 * @ifreq: interface request
5822 * Outgoing time stamping can be enabled and disabled. Play nice and
5823 * disable it when requested, although it shouldn't cause any overhead
5824 * when no packet needs it. At most one packet in the queue may be
5825 * marked for time stamping, otherwise it would be impossible to tell
5826 * for sure to which packet the hardware time stamp belongs.
5828 * Incoming time stamping has to be configured via the hardware filters.
5829 * Not all combinations are supported, in particular event type has to be
5830 * specified. Matching the kind of event packet is not supported, with the
5831 * exception of "all V2 events regardless of level 2 or 4".
5833 static int e1000e_hwtstamp_set(struct net_device
*netdev
, struct ifreq
*ifr
)
5835 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5836 struct hwtstamp_config config
;
5839 if (copy_from_user(&config
, ifr
->ifr_data
, sizeof(config
)))
5842 ret_val
= e1000e_config_hwtstamp(adapter
, &config
);
5846 switch (config
.rx_filter
) {
5847 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC
:
5848 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC
:
5849 case HWTSTAMP_FILTER_PTP_V2_SYNC
:
5850 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ
:
5851 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ
:
5852 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ
:
5853 /* With V2 type filters which specify a Sync or Delay Request,
5854 * Path Delay Request/Response messages are also time stamped
5855 * by hardware so notify the caller the requested packets plus
5856 * some others are time stamped.
5858 config
.rx_filter
= HWTSTAMP_FILTER_SOME
;
5864 return copy_to_user(ifr
->ifr_data
, &config
,
5865 sizeof(config
)) ? -EFAULT
: 0;
5868 static int e1000e_hwtstamp_get(struct net_device
*netdev
, struct ifreq
*ifr
)
5870 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5872 return copy_to_user(ifr
->ifr_data
, &adapter
->hwtstamp_config
,
5873 sizeof(adapter
->hwtstamp_config
)) ? -EFAULT
: 0;
5876 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
5882 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
5884 return e1000e_hwtstamp_set(netdev
, ifr
);
5886 return e1000e_hwtstamp_get(netdev
, ifr
);
5892 static int e1000_init_phy_wakeup(struct e1000_adapter
*adapter
, u32 wufc
)
5894 struct e1000_hw
*hw
= &adapter
->hw
;
5895 u32 i
, mac_reg
, wuc
;
5896 u16 phy_reg
, wuc_enable
;
5899 /* copy MAC RARs to PHY RARs */
5900 e1000_copy_rx_addrs_to_phy_ich8lan(hw
);
5902 retval
= hw
->phy
.ops
.acquire(hw
);
5904 e_err("Could not acquire PHY\n");
5908 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */
5909 retval
= e1000_enable_phy_wakeup_reg_access_bm(hw
, &wuc_enable
);
5913 /* copy MAC MTA to PHY MTA - only needed for pchlan */
5914 for (i
= 0; i
< adapter
->hw
.mac
.mta_reg_count
; i
++) {
5915 mac_reg
= E1000_READ_REG_ARRAY(hw
, E1000_MTA
, i
);
5916 hw
->phy
.ops
.write_reg_page(hw
, BM_MTA(i
),
5917 (u16
)(mac_reg
& 0xFFFF));
5918 hw
->phy
.ops
.write_reg_page(hw
, BM_MTA(i
) + 1,
5919 (u16
)((mac_reg
>> 16) & 0xFFFF));
5922 /* configure PHY Rx Control register */
5923 hw
->phy
.ops
.read_reg_page(&adapter
->hw
, BM_RCTL
, &phy_reg
);
5924 mac_reg
= er32(RCTL
);
5925 if (mac_reg
& E1000_RCTL_UPE
)
5926 phy_reg
|= BM_RCTL_UPE
;
5927 if (mac_reg
& E1000_RCTL_MPE
)
5928 phy_reg
|= BM_RCTL_MPE
;
5929 phy_reg
&= ~(BM_RCTL_MO_MASK
);
5930 if (mac_reg
& E1000_RCTL_MO_3
)
5931 phy_reg
|= (((mac_reg
& E1000_RCTL_MO_3
) >> E1000_RCTL_MO_SHIFT
)
5932 << BM_RCTL_MO_SHIFT
);
5933 if (mac_reg
& E1000_RCTL_BAM
)
5934 phy_reg
|= BM_RCTL_BAM
;
5935 if (mac_reg
& E1000_RCTL_PMCF
)
5936 phy_reg
|= BM_RCTL_PMCF
;
5937 mac_reg
= er32(CTRL
);
5938 if (mac_reg
& E1000_CTRL_RFCE
)
5939 phy_reg
|= BM_RCTL_RFCE
;
5940 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_RCTL
, phy_reg
);
5942 wuc
= E1000_WUC_PME_EN
;
5943 if (wufc
& (E1000_WUFC_MAG
| E1000_WUFC_LNKC
))
5944 wuc
|= E1000_WUC_APME
;
5946 /* enable PHY wakeup in MAC register */
5948 ew32(WUC
, (E1000_WUC_PHY_WAKE
| E1000_WUC_APMPME
|
5949 E1000_WUC_PME_STATUS
| wuc
));
5951 /* configure and enable PHY wakeup in PHY registers */
5952 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_WUFC
, wufc
);
5953 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_WUC
, wuc
);
5955 /* activate PHY wakeup */
5956 wuc_enable
|= BM_WUC_ENABLE_BIT
| BM_WUC_HOST_WU_BIT
;
5957 retval
= e1000_disable_phy_wakeup_reg_access_bm(hw
, &wuc_enable
);
5959 e_err("Could not set PHY Host Wakeup bit\n");
5961 hw
->phy
.ops
.release(hw
);
5966 static int e1000e_pm_freeze(struct device
*dev
)
5968 struct net_device
*netdev
= pci_get_drvdata(to_pci_dev(dev
));
5969 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5971 netif_device_detach(netdev
);
5973 if (netif_running(netdev
)) {
5974 int count
= E1000_CHECK_RESET_COUNT
;
5976 while (test_bit(__E1000_RESETTING
, &adapter
->state
) && count
--)
5977 usleep_range(10000, 20000);
5979 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
5981 /* Quiesce the device without resetting the hardware */
5982 e1000e_down(adapter
, false);
5983 e1000_free_irq(adapter
);
5985 e1000e_reset_interrupt_capability(adapter
);
5987 /* Allow time for pending master requests to run */
5988 e1000e_disable_pcie_master(&adapter
->hw
);
5993 static int __e1000_shutdown(struct pci_dev
*pdev
, bool runtime
)
5995 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5996 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5997 struct e1000_hw
*hw
= &adapter
->hw
;
5998 u32 ctrl
, ctrl_ext
, rctl
, status
;
5999 /* Runtime suspend should only enable wakeup for link changes */
6000 u32 wufc
= runtime
? E1000_WUFC_LNKC
: adapter
->wol
;
6003 status
= er32(STATUS
);
6004 if (status
& E1000_STATUS_LU
)
6005 wufc
&= ~E1000_WUFC_LNKC
;
6008 e1000_setup_rctl(adapter
);
6009 e1000e_set_rx_mode(netdev
);
6011 /* turn on all-multi mode if wake on multicast is enabled */
6012 if (wufc
& E1000_WUFC_MC
) {
6014 rctl
|= E1000_RCTL_MPE
;
6019 ctrl
|= E1000_CTRL_ADVD3WUC
;
6020 if (!(adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
))
6021 ctrl
|= E1000_CTRL_EN_PHY_PWR_MGMT
;
6024 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
6025 adapter
->hw
.phy
.media_type
==
6026 e1000_media_type_internal_serdes
) {
6027 /* keep the laser running in D3 */
6028 ctrl_ext
= er32(CTRL_EXT
);
6029 ctrl_ext
|= E1000_CTRL_EXT_SDP3_DATA
;
6030 ew32(CTRL_EXT
, ctrl_ext
);
6034 e1000e_power_up_phy(adapter
);
6036 if (adapter
->flags
& FLAG_IS_ICH
)
6037 e1000_suspend_workarounds_ich8lan(&adapter
->hw
);
6039 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
6040 /* enable wakeup by the PHY */
6041 retval
= e1000_init_phy_wakeup(adapter
, wufc
);
6045 /* enable wakeup by the MAC */
6047 ew32(WUC
, E1000_WUC_PME_EN
);
6053 e1000_power_down_phy(adapter
);
6056 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
) {
6057 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
6058 } else if (hw
->mac
.type
== e1000_pch_lpt
) {
6059 if (!(wufc
& (E1000_WUFC_EX
| E1000_WUFC_MC
| E1000_WUFC_BC
)))
6060 /* ULP does not support wake from unicast, multicast
6063 retval
= e1000_enable_ulp_lpt_lp(hw
, !runtime
);
6070 /* Release control of h/w to f/w. If f/w is AMT enabled, this
6071 * would have already happened in close and is redundant.
6073 e1000e_release_hw_control(adapter
);
6075 pci_clear_master(pdev
);
6077 /* The pci-e switch on some quad port adapters will report a
6078 * correctable error when the MAC transitions from D0 to D3. To
6079 * prevent this we need to mask off the correctable errors on the
6080 * downstream port of the pci-e switch.
6082 * We don't have the associated upstream bridge while assigning
6083 * the PCI device into guest. For example, the KVM on power is
6086 if (adapter
->flags
& FLAG_IS_QUAD_PORT
) {
6087 struct pci_dev
*us_dev
= pdev
->bus
->self
;
6093 pcie_capability_read_word(us_dev
, PCI_EXP_DEVCTL
, &devctl
);
6094 pcie_capability_write_word(us_dev
, PCI_EXP_DEVCTL
,
6095 (devctl
& ~PCI_EXP_DEVCTL_CERE
));
6097 pci_save_state(pdev
);
6098 pci_prepare_to_sleep(pdev
);
6100 pcie_capability_write_word(us_dev
, PCI_EXP_DEVCTL
, devctl
);
6107 * e1000e_disable_aspm - Disable ASPM states
6108 * @pdev: pointer to PCI device struct
6109 * @state: bit-mask of ASPM states to disable
6111 * Some devices *must* have certain ASPM states disabled per hardware errata.
6113 static void e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
6115 struct pci_dev
*parent
= pdev
->bus
->self
;
6116 u16 aspm_dis_mask
= 0;
6117 u16 pdev_aspmc
, parent_aspmc
;
6120 case PCIE_LINK_STATE_L0S
:
6121 case PCIE_LINK_STATE_L0S
| PCIE_LINK_STATE_L1
:
6122 aspm_dis_mask
|= PCI_EXP_LNKCTL_ASPM_L0S
;
6123 /* fall-through - can't have L1 without L0s */
6124 case PCIE_LINK_STATE_L1
:
6125 aspm_dis_mask
|= PCI_EXP_LNKCTL_ASPM_L1
;
6131 pcie_capability_read_word(pdev
, PCI_EXP_LNKCTL
, &pdev_aspmc
);
6132 pdev_aspmc
&= PCI_EXP_LNKCTL_ASPMC
;
6135 pcie_capability_read_word(parent
, PCI_EXP_LNKCTL
,
6137 parent_aspmc
&= PCI_EXP_LNKCTL_ASPMC
;
6140 /* Nothing to do if the ASPM states to be disabled already are */
6141 if (!(pdev_aspmc
& aspm_dis_mask
) &&
6142 (!parent
|| !(parent_aspmc
& aspm_dis_mask
)))
6145 dev_info(&pdev
->dev
, "Disabling ASPM %s %s\n",
6146 (aspm_dis_mask
& pdev_aspmc
& PCI_EXP_LNKCTL_ASPM_L0S
) ?
6148 (aspm_dis_mask
& pdev_aspmc
& PCI_EXP_LNKCTL_ASPM_L1
) ?
6151 #ifdef CONFIG_PCIEASPM
6152 pci_disable_link_state_locked(pdev
, state
);
6154 /* Double-check ASPM control. If not disabled by the above, the
6155 * BIOS is preventing that from happening (or CONFIG_PCIEASPM is
6156 * not enabled); override by writing PCI config space directly.
6158 pcie_capability_read_word(pdev
, PCI_EXP_LNKCTL
, &pdev_aspmc
);
6159 pdev_aspmc
&= PCI_EXP_LNKCTL_ASPMC
;
6161 if (!(aspm_dis_mask
& pdev_aspmc
))
6165 /* Both device and parent should have the same ASPM setting.
6166 * Disable ASPM in downstream component first and then upstream.
6168 pcie_capability_clear_word(pdev
, PCI_EXP_LNKCTL
, aspm_dis_mask
);
6171 pcie_capability_clear_word(parent
, PCI_EXP_LNKCTL
,
6176 static int __e1000_resume(struct pci_dev
*pdev
)
6178 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6179 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6180 struct e1000_hw
*hw
= &adapter
->hw
;
6181 u16 aspm_disable_flag
= 0;
6183 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
6184 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
6185 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
6186 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
6187 if (aspm_disable_flag
)
6188 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
6190 pci_set_master(pdev
);
6192 if (hw
->mac
.type
>= e1000_pch2lan
)
6193 e1000_resume_workarounds_pchlan(&adapter
->hw
);
6195 e1000e_power_up_phy(adapter
);
6197 /* report the system wakeup cause from S3/S4 */
6198 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
6201 e1e_rphy(&adapter
->hw
, BM_WUS
, &phy_data
);
6203 e_info("PHY Wakeup cause - %s\n",
6204 phy_data
& E1000_WUS_EX
? "Unicast Packet" :
6205 phy_data
& E1000_WUS_MC
? "Multicast Packet" :
6206 phy_data
& E1000_WUS_BC
? "Broadcast Packet" :
6207 phy_data
& E1000_WUS_MAG
? "Magic Packet" :
6208 phy_data
& E1000_WUS_LNKC
?
6209 "Link Status Change" : "other");
6211 e1e_wphy(&adapter
->hw
, BM_WUS
, ~0);
6213 u32 wus
= er32(WUS
);
6215 e_info("MAC Wakeup cause - %s\n",
6216 wus
& E1000_WUS_EX
? "Unicast Packet" :
6217 wus
& E1000_WUS_MC
? "Multicast Packet" :
6218 wus
& E1000_WUS_BC
? "Broadcast Packet" :
6219 wus
& E1000_WUS_MAG
? "Magic Packet" :
6220 wus
& E1000_WUS_LNKC
? "Link Status Change" :
6226 e1000e_reset(adapter
);
6228 e1000_init_manageability_pt(adapter
);
6230 /* If the controller has AMT, do not set DRV_LOAD until the interface
6231 * is up. For all other cases, let the f/w know that the h/w is now
6232 * under the control of the driver.
6234 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6235 e1000e_get_hw_control(adapter
);
6240 static int e1000e_pm_thaw(struct device
*dev
)
6242 struct net_device
*netdev
= pci_get_drvdata(to_pci_dev(dev
));
6243 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6245 e1000e_set_interrupt_capability(adapter
);
6246 if (netif_running(netdev
)) {
6247 u32 err
= e1000_request_irq(adapter
);
6255 netif_device_attach(netdev
);
6260 #ifdef CONFIG_PM_SLEEP
6261 static int e1000e_pm_suspend(struct device
*dev
)
6263 struct pci_dev
*pdev
= to_pci_dev(dev
);
6265 e1000e_pm_freeze(dev
);
6267 return __e1000_shutdown(pdev
, false);
6270 static int e1000e_pm_resume(struct device
*dev
)
6272 struct pci_dev
*pdev
= to_pci_dev(dev
);
6275 rc
= __e1000_resume(pdev
);
6279 return e1000e_pm_thaw(dev
);
6281 #endif /* CONFIG_PM_SLEEP */
6283 #ifdef CONFIG_PM_RUNTIME
6284 static int e1000e_pm_runtime_idle(struct device
*dev
)
6286 struct pci_dev
*pdev
= to_pci_dev(dev
);
6287 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6288 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6290 if (!e1000e_has_link(adapter
))
6291 pm_schedule_suspend(dev
, 5 * MSEC_PER_SEC
);
6296 static int e1000e_pm_runtime_resume(struct device
*dev
)
6298 struct pci_dev
*pdev
= to_pci_dev(dev
);
6299 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6300 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6303 rc
= __e1000_resume(pdev
);
6307 if (netdev
->flags
& IFF_UP
)
6308 rc
= e1000e_up(adapter
);
6313 static int e1000e_pm_runtime_suspend(struct device
*dev
)
6315 struct pci_dev
*pdev
= to_pci_dev(dev
);
6316 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6317 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6319 if (netdev
->flags
& IFF_UP
) {
6320 int count
= E1000_CHECK_RESET_COUNT
;
6322 while (test_bit(__E1000_RESETTING
, &adapter
->state
) && count
--)
6323 usleep_range(10000, 20000);
6325 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
6327 /* Down the device without resetting the hardware */
6328 e1000e_down(adapter
, false);
6331 if (__e1000_shutdown(pdev
, true)) {
6332 e1000e_pm_runtime_resume(dev
);
6338 #endif /* CONFIG_PM_RUNTIME */
6339 #endif /* CONFIG_PM */
6341 static void e1000_shutdown(struct pci_dev
*pdev
)
6343 e1000e_pm_freeze(&pdev
->dev
);
6345 __e1000_shutdown(pdev
, false);
6348 #ifdef CONFIG_NET_POLL_CONTROLLER
6350 static irqreturn_t
e1000_intr_msix(int __always_unused irq
, void *data
)
6352 struct net_device
*netdev
= data
;
6353 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6355 if (adapter
->msix_entries
) {
6356 int vector
, msix_irq
;
6359 msix_irq
= adapter
->msix_entries
[vector
].vector
;
6360 disable_irq(msix_irq
);
6361 e1000_intr_msix_rx(msix_irq
, netdev
);
6362 enable_irq(msix_irq
);
6365 msix_irq
= adapter
->msix_entries
[vector
].vector
;
6366 disable_irq(msix_irq
);
6367 e1000_intr_msix_tx(msix_irq
, netdev
);
6368 enable_irq(msix_irq
);
6371 msix_irq
= adapter
->msix_entries
[vector
].vector
;
6372 disable_irq(msix_irq
);
6373 e1000_msix_other(msix_irq
, netdev
);
6374 enable_irq(msix_irq
);
6382 * @netdev: network interface device structure
6384 * Polling 'interrupt' - used by things like netconsole to send skbs
6385 * without having to re-enable interrupts. It's not called while
6386 * the interrupt routine is executing.
6388 static void e1000_netpoll(struct net_device
*netdev
)
6390 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6392 switch (adapter
->int_mode
) {
6393 case E1000E_INT_MODE_MSIX
:
6394 e1000_intr_msix(adapter
->pdev
->irq
, netdev
);
6396 case E1000E_INT_MODE_MSI
:
6397 disable_irq(adapter
->pdev
->irq
);
6398 e1000_intr_msi(adapter
->pdev
->irq
, netdev
);
6399 enable_irq(adapter
->pdev
->irq
);
6401 default: /* E1000E_INT_MODE_LEGACY */
6402 disable_irq(adapter
->pdev
->irq
);
6403 e1000_intr(adapter
->pdev
->irq
, netdev
);
6404 enable_irq(adapter
->pdev
->irq
);
6411 * e1000_io_error_detected - called when PCI error is detected
6412 * @pdev: Pointer to PCI device
6413 * @state: The current pci connection state
6415 * This function is called after a PCI bus error affecting
6416 * this device has been detected.
6418 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
6419 pci_channel_state_t state
)
6421 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6422 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6424 netif_device_detach(netdev
);
6426 if (state
== pci_channel_io_perm_failure
)
6427 return PCI_ERS_RESULT_DISCONNECT
;
6429 if (netif_running(netdev
))
6430 e1000e_down(adapter
, true);
6431 pci_disable_device(pdev
);
6433 /* Request a slot slot reset. */
6434 return PCI_ERS_RESULT_NEED_RESET
;
6438 * e1000_io_slot_reset - called after the pci bus has been reset.
6439 * @pdev: Pointer to PCI device
6441 * Restart the card from scratch, as if from a cold-boot. Implementation
6442 * resembles the first-half of the e1000e_pm_resume routine.
6444 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
6446 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6447 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6448 struct e1000_hw
*hw
= &adapter
->hw
;
6449 u16 aspm_disable_flag
= 0;
6451 pci_ers_result_t result
;
6453 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
6454 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
6455 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
6456 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
6457 if (aspm_disable_flag
)
6458 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
6460 err
= pci_enable_device_mem(pdev
);
6463 "Cannot re-enable PCI device after reset.\n");
6464 result
= PCI_ERS_RESULT_DISCONNECT
;
6466 pdev
->state_saved
= true;
6467 pci_restore_state(pdev
);
6468 pci_set_master(pdev
);
6470 pci_enable_wake(pdev
, PCI_D3hot
, 0);
6471 pci_enable_wake(pdev
, PCI_D3cold
, 0);
6473 e1000e_reset(adapter
);
6475 result
= PCI_ERS_RESULT_RECOVERED
;
6478 pci_cleanup_aer_uncorrect_error_status(pdev
);
6484 * e1000_io_resume - called when traffic can start flowing again.
6485 * @pdev: Pointer to PCI device
6487 * This callback is called when the error recovery driver tells us that
6488 * its OK to resume normal operation. Implementation resembles the
6489 * second-half of the e1000e_pm_resume routine.
6491 static void e1000_io_resume(struct pci_dev
*pdev
)
6493 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6494 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6496 e1000_init_manageability_pt(adapter
);
6498 if (netif_running(netdev
)) {
6499 if (e1000e_up(adapter
)) {
6501 "can't bring device back up after reset\n");
6506 netif_device_attach(netdev
);
6508 /* If the controller has AMT, do not set DRV_LOAD until the interface
6509 * is up. For all other cases, let the f/w know that the h/w is now
6510 * under the control of the driver.
6512 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6513 e1000e_get_hw_control(adapter
);
6516 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
6518 struct e1000_hw
*hw
= &adapter
->hw
;
6519 struct net_device
*netdev
= adapter
->netdev
;
6521 u8 pba_str
[E1000_PBANUM_LENGTH
];
6523 /* print bus type/speed/width info */
6524 e_info("(PCI Express:2.5GT/s:%s) %pM\n",
6526 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
6530 e_info("Intel(R) PRO/%s Network Connection\n",
6531 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
6532 ret_val
= e1000_read_pba_string_generic(hw
, pba_str
,
6533 E1000_PBANUM_LENGTH
);
6535 strlcpy((char *)pba_str
, "Unknown", sizeof(pba_str
));
6536 e_info("MAC: %d, PHY: %d, PBA No: %s\n",
6537 hw
->mac
.type
, hw
->phy
.type
, pba_str
);
6540 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
6542 struct e1000_hw
*hw
= &adapter
->hw
;
6546 if (hw
->mac
.type
!= e1000_82573
)
6549 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
6551 if (!ret_val
&& (!(buf
& (1 << 0)))) {
6552 /* Deep Smart Power Down (DSPD) */
6553 dev_warn(&adapter
->pdev
->dev
,
6554 "Warning: detected DSPD enabled in EEPROM\n");
6558 static int e1000_set_features(struct net_device
*netdev
,
6559 netdev_features_t features
)
6561 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6562 netdev_features_t changed
= features
^ netdev
->features
;
6564 if (changed
& (NETIF_F_TSO
| NETIF_F_TSO6
))
6565 adapter
->flags
|= FLAG_TSO_FORCE
;
6567 if (!(changed
& (NETIF_F_HW_VLAN_CTAG_RX
| NETIF_F_HW_VLAN_CTAG_TX
|
6568 NETIF_F_RXCSUM
| NETIF_F_RXHASH
| NETIF_F_RXFCS
|
6572 if (changed
& NETIF_F_RXFCS
) {
6573 if (features
& NETIF_F_RXFCS
) {
6574 adapter
->flags2
&= ~FLAG2_CRC_STRIPPING
;
6576 /* We need to take it back to defaults, which might mean
6577 * stripping is still disabled at the adapter level.
6579 if (adapter
->flags2
& FLAG2_DFLT_CRC_STRIPPING
)
6580 adapter
->flags2
|= FLAG2_CRC_STRIPPING
;
6582 adapter
->flags2
&= ~FLAG2_CRC_STRIPPING
;
6586 netdev
->features
= features
;
6588 if (netif_running(netdev
))
6589 e1000e_reinit_locked(adapter
);
6591 e1000e_reset(adapter
);
6596 static const struct net_device_ops e1000e_netdev_ops
= {
6597 .ndo_open
= e1000_open
,
6598 .ndo_stop
= e1000_close
,
6599 .ndo_start_xmit
= e1000_xmit_frame
,
6600 .ndo_get_stats64
= e1000e_get_stats64
,
6601 .ndo_set_rx_mode
= e1000e_set_rx_mode
,
6602 .ndo_set_mac_address
= e1000_set_mac
,
6603 .ndo_change_mtu
= e1000_change_mtu
,
6604 .ndo_do_ioctl
= e1000_ioctl
,
6605 .ndo_tx_timeout
= e1000_tx_timeout
,
6606 .ndo_validate_addr
= eth_validate_addr
,
6608 .ndo_vlan_rx_add_vid
= e1000_vlan_rx_add_vid
,
6609 .ndo_vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
,
6610 #ifdef CONFIG_NET_POLL_CONTROLLER
6611 .ndo_poll_controller
= e1000_netpoll
,
6613 .ndo_set_features
= e1000_set_features
,
6617 * e1000_probe - Device Initialization Routine
6618 * @pdev: PCI device information struct
6619 * @ent: entry in e1000_pci_tbl
6621 * Returns 0 on success, negative on failure
6623 * e1000_probe initializes an adapter identified by a pci_dev structure.
6624 * The OS initialization, configuring of the adapter private structure,
6625 * and a hardware reset occur.
6627 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
6629 struct net_device
*netdev
;
6630 struct e1000_adapter
*adapter
;
6631 struct e1000_hw
*hw
;
6632 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
6633 resource_size_t mmio_start
, mmio_len
;
6634 resource_size_t flash_start
, flash_len
;
6635 static int cards_found
;
6636 u16 aspm_disable_flag
= 0;
6637 int bars
, i
, err
, pci_using_dac
;
6638 u16 eeprom_data
= 0;
6639 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
6641 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
6642 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
6643 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L1
)
6644 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
6645 if (aspm_disable_flag
)
6646 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
6648 err
= pci_enable_device_mem(pdev
);
6653 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(64));
6657 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(32));
6660 "No usable DMA configuration, aborting\n");
6665 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
);
6666 err
= pci_request_selected_regions_exclusive(pdev
, bars
,
6667 e1000e_driver_name
);
6671 /* AER (Advanced Error Reporting) hooks */
6672 pci_enable_pcie_error_reporting(pdev
);
6674 pci_set_master(pdev
);
6675 /* PCI config space info */
6676 err
= pci_save_state(pdev
);
6678 goto err_alloc_etherdev
;
6681 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
6683 goto err_alloc_etherdev
;
6685 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
6687 netdev
->irq
= pdev
->irq
;
6689 pci_set_drvdata(pdev
, netdev
);
6690 adapter
= netdev_priv(netdev
);
6692 adapter
->netdev
= netdev
;
6693 adapter
->pdev
= pdev
;
6695 adapter
->pba
= ei
->pba
;
6696 adapter
->flags
= ei
->flags
;
6697 adapter
->flags2
= ei
->flags2
;
6698 adapter
->hw
.adapter
= adapter
;
6699 adapter
->hw
.mac
.type
= ei
->mac
;
6700 adapter
->max_hw_frame_size
= ei
->max_hw_frame_size
;
6701 adapter
->msg_enable
= netif_msg_init(debug
, DEFAULT_MSG_ENABLE
);
6703 mmio_start
= pci_resource_start(pdev
, 0);
6704 mmio_len
= pci_resource_len(pdev
, 0);
6707 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
6708 if (!adapter
->hw
.hw_addr
)
6711 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
6712 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
6713 flash_start
= pci_resource_start(pdev
, 1);
6714 flash_len
= pci_resource_len(pdev
, 1);
6715 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
6716 if (!adapter
->hw
.flash_address
)
6720 /* Set default EEE advertisement */
6721 if (adapter
->flags2
& FLAG2_HAS_EEE
)
6722 adapter
->eee_advert
= MDIO_EEE_100TX
| MDIO_EEE_1000T
;
6724 /* construct the net_device struct */
6725 netdev
->netdev_ops
= &e1000e_netdev_ops
;
6726 e1000e_set_ethtool_ops(netdev
);
6727 netdev
->watchdog_timeo
= 5 * HZ
;
6728 netif_napi_add(netdev
, &adapter
->napi
, e1000e_poll
, 64);
6729 strlcpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
));
6731 netdev
->mem_start
= mmio_start
;
6732 netdev
->mem_end
= mmio_start
+ mmio_len
;
6734 adapter
->bd_number
= cards_found
++;
6736 e1000e_check_options(adapter
);
6738 /* setup adapter struct */
6739 err
= e1000_sw_init(adapter
);
6743 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
6744 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
6745 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
6747 err
= ei
->get_variants(adapter
);
6751 if ((adapter
->flags
& FLAG_IS_ICH
) &&
6752 (adapter
->flags
& FLAG_READ_ONLY_NVM
))
6753 e1000e_write_protect_nvm_ich8lan(&adapter
->hw
);
6755 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
6757 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
6759 /* Copper options */
6760 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
6761 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
6762 adapter
->hw
.phy
.disable_polarity_correction
= 0;
6763 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
6766 if (hw
->phy
.ops
.check_reset_block
&& hw
->phy
.ops
.check_reset_block(hw
))
6767 dev_info(&pdev
->dev
,
6768 "PHY reset is blocked due to SOL/IDER session.\n");
6770 /* Set initial default active device features */
6771 netdev
->features
= (NETIF_F_SG
|
6772 NETIF_F_HW_VLAN_CTAG_RX
|
6773 NETIF_F_HW_VLAN_CTAG_TX
|
6780 /* Set user-changeable features (subset of all device features) */
6781 netdev
->hw_features
= netdev
->features
;
6782 netdev
->hw_features
|= NETIF_F_RXFCS
;
6783 netdev
->priv_flags
|= IFF_SUPP_NOFCS
;
6784 netdev
->hw_features
|= NETIF_F_RXALL
;
6786 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
6787 netdev
->features
|= NETIF_F_HW_VLAN_CTAG_FILTER
;
6789 netdev
->vlan_features
|= (NETIF_F_SG
|
6794 netdev
->priv_flags
|= IFF_UNICAST_FLT
;
6796 if (pci_using_dac
) {
6797 netdev
->features
|= NETIF_F_HIGHDMA
;
6798 netdev
->vlan_features
|= NETIF_F_HIGHDMA
;
6801 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
6802 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
6804 /* before reading the NVM, reset the controller to
6805 * put the device in a known good starting state
6807 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
6809 /* systems with ASPM and others may see the checksum fail on the first
6810 * attempt. Let's give it a few tries
6813 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
6816 dev_err(&pdev
->dev
, "The NVM Checksum Is Not Valid\n");
6822 e1000_eeprom_checks(adapter
);
6824 /* copy the MAC address */
6825 if (e1000e_read_mac_addr(&adapter
->hw
))
6827 "NVM Read Error while reading MAC address\n");
6829 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
6831 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
6832 dev_err(&pdev
->dev
, "Invalid MAC Address: %pM\n",
6838 init_timer(&adapter
->watchdog_timer
);
6839 adapter
->watchdog_timer
.function
= e1000_watchdog
;
6840 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
6842 init_timer(&adapter
->phy_info_timer
);
6843 adapter
->phy_info_timer
.function
= e1000_update_phy_info
;
6844 adapter
->phy_info_timer
.data
= (unsigned long)adapter
;
6846 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
6847 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
6848 INIT_WORK(&adapter
->downshift_task
, e1000e_downshift_workaround
);
6849 INIT_WORK(&adapter
->update_phy_task
, e1000e_update_phy_task
);
6850 INIT_WORK(&adapter
->print_hang_task
, e1000_print_hw_hang
);
6852 /* Initialize link parameters. User can change them with ethtool */
6853 adapter
->hw
.mac
.autoneg
= 1;
6854 adapter
->fc_autoneg
= true;
6855 adapter
->hw
.fc
.requested_mode
= e1000_fc_default
;
6856 adapter
->hw
.fc
.current_mode
= e1000_fc_default
;
6857 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
6859 /* Initial Wake on LAN setting - If APM wake is enabled in
6860 * the EEPROM, enable the ACPI Magic Packet filter
6862 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
6863 /* APME bit in EEPROM is mapped to WUC.APME */
6864 eeprom_data
= er32(WUC
);
6865 eeprom_apme_mask
= E1000_WUC_APME
;
6866 if ((hw
->mac
.type
> e1000_ich10lan
) &&
6867 (eeprom_data
& E1000_WUC_PHY_WAKE
))
6868 adapter
->flags2
|= FLAG2_HAS_PHY_WAKEUP
;
6869 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
6870 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
6871 (adapter
->hw
.bus
.func
== 1))
6872 e1000_read_nvm(&adapter
->hw
, NVM_INIT_CONTROL3_PORT_B
,
6875 e1000_read_nvm(&adapter
->hw
, NVM_INIT_CONTROL3_PORT_A
,
6879 /* fetch WoL from EEPROM */
6880 if (eeprom_data
& eeprom_apme_mask
)
6881 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
6883 /* now that we have the eeprom settings, apply the special cases
6884 * where the eeprom may be wrong or the board simply won't support
6885 * wake on lan on a particular port
6887 if (!(adapter
->flags
& FLAG_HAS_WOL
))
6888 adapter
->eeprom_wol
= 0;
6890 /* initialize the wol settings based on the eeprom settings */
6891 adapter
->wol
= adapter
->eeprom_wol
;
6893 /* make sure adapter isn't asleep if manageability is enabled */
6894 if (adapter
->wol
|| (adapter
->flags
& FLAG_MNG_PT_ENABLED
) ||
6895 (hw
->mac
.ops
.check_mng_mode(hw
)))
6896 device_wakeup_enable(&pdev
->dev
);
6898 /* save off EEPROM version number */
6899 e1000_read_nvm(&adapter
->hw
, 5, 1, &adapter
->eeprom_vers
);
6901 /* reset the hardware with the new settings */
6902 e1000e_reset(adapter
);
6904 /* If the controller has AMT, do not set DRV_LOAD until the interface
6905 * is up. For all other cases, let the f/w know that the h/w is now
6906 * under the control of the driver.
6908 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6909 e1000e_get_hw_control(adapter
);
6911 strlcpy(netdev
->name
, "eth%d", sizeof(netdev
->name
));
6912 err
= register_netdev(netdev
);
6916 /* carrier off reporting is important to ethtool even BEFORE open */
6917 netif_carrier_off(netdev
);
6919 /* init PTP hardware clock */
6920 e1000e_ptp_init(adapter
);
6922 e1000_print_device_info(adapter
);
6924 if (pci_dev_run_wake(pdev
))
6925 pm_runtime_put_noidle(&pdev
->dev
);
6930 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6931 e1000e_release_hw_control(adapter
);
6933 if (hw
->phy
.ops
.check_reset_block
&& !hw
->phy
.ops
.check_reset_block(hw
))
6934 e1000_phy_hw_reset(&adapter
->hw
);
6936 kfree(adapter
->tx_ring
);
6937 kfree(adapter
->rx_ring
);
6939 if (adapter
->hw
.flash_address
)
6940 iounmap(adapter
->hw
.flash_address
);
6941 e1000e_reset_interrupt_capability(adapter
);
6943 iounmap(adapter
->hw
.hw_addr
);
6945 free_netdev(netdev
);
6947 pci_release_selected_regions(pdev
,
6948 pci_select_bars(pdev
, IORESOURCE_MEM
));
6951 pci_disable_device(pdev
);
6956 * e1000_remove - Device Removal Routine
6957 * @pdev: PCI device information struct
6959 * e1000_remove is called by the PCI subsystem to alert the driver
6960 * that it should release a PCI device. The could be caused by a
6961 * Hot-Plug event, or because the driver is going to be removed from
6964 static void e1000_remove(struct pci_dev
*pdev
)
6966 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6967 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6968 bool down
= test_bit(__E1000_DOWN
, &adapter
->state
);
6970 e1000e_ptp_remove(adapter
);
6972 /* The timers may be rescheduled, so explicitly disable them
6973 * from being rescheduled.
6976 set_bit(__E1000_DOWN
, &adapter
->state
);
6977 del_timer_sync(&adapter
->watchdog_timer
);
6978 del_timer_sync(&adapter
->phy_info_timer
);
6980 cancel_work_sync(&adapter
->reset_task
);
6981 cancel_work_sync(&adapter
->watchdog_task
);
6982 cancel_work_sync(&adapter
->downshift_task
);
6983 cancel_work_sync(&adapter
->update_phy_task
);
6984 cancel_work_sync(&adapter
->print_hang_task
);
6986 if (adapter
->flags
& FLAG_HAS_HW_TIMESTAMP
) {
6987 cancel_work_sync(&adapter
->tx_hwtstamp_work
);
6988 if (adapter
->tx_hwtstamp_skb
) {
6989 dev_kfree_skb_any(adapter
->tx_hwtstamp_skb
);
6990 adapter
->tx_hwtstamp_skb
= NULL
;
6994 /* Don't lie to e1000_close() down the road. */
6996 clear_bit(__E1000_DOWN
, &adapter
->state
);
6997 unregister_netdev(netdev
);
6999 if (pci_dev_run_wake(pdev
))
7000 pm_runtime_get_noresume(&pdev
->dev
);
7002 /* Release control of h/w to f/w. If f/w is AMT enabled, this
7003 * would have already happened in close and is redundant.
7005 e1000e_release_hw_control(adapter
);
7007 e1000e_reset_interrupt_capability(adapter
);
7008 kfree(adapter
->tx_ring
);
7009 kfree(adapter
->rx_ring
);
7011 iounmap(adapter
->hw
.hw_addr
);
7012 if (adapter
->hw
.flash_address
)
7013 iounmap(adapter
->hw
.flash_address
);
7014 pci_release_selected_regions(pdev
,
7015 pci_select_bars(pdev
, IORESOURCE_MEM
));
7017 free_netdev(netdev
);
7020 pci_disable_pcie_error_reporting(pdev
);
7022 pci_disable_device(pdev
);
7025 /* PCI Error Recovery (ERS) */
7026 static const struct pci_error_handlers e1000_err_handler
= {
7027 .error_detected
= e1000_io_error_detected
,
7028 .slot_reset
= e1000_io_slot_reset
,
7029 .resume
= e1000_io_resume
,
7032 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl
) = {
7033 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
7034 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
7035 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
7036 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
),
7038 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
7039 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
7040 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
7041 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
7042 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
7044 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
7045 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
7046 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
7047 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
7049 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
7050 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
7051 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
7053 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574L
), board_82574
},
7054 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574LA
), board_82574
},
7055 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82583V
), board_82583
},
7057 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
7058 board_80003es2lan
},
7059 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
7060 board_80003es2lan
},
7061 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
7062 board_80003es2lan
},
7063 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
7064 board_80003es2lan
},
7066 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
7067 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
7068 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
7069 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
7070 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
7071 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
7072 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
7073 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_82567V_3
), board_ich8lan
},
7075 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
7076 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
7077 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
7078 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
7079 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
7080 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_BM
), board_ich9lan
},
7081 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
7082 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
7083 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
7085 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
7086 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
7087 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
7089 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LM
), board_ich10lan
},
7090 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LF
), board_ich10lan
},
7091 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_V
), board_ich10lan
},
7093 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LM
), board_pchlan
},
7094 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LC
), board_pchlan
},
7095 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DM
), board_pchlan
},
7096 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DC
), board_pchlan
},
7098 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_LM
), board_pch2lan
},
7099 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_V
), board_pch2lan
},
7101 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPT_I217_LM
), board_pch_lpt
},
7102 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPT_I217_V
), board_pch_lpt
},
7103 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPTLP_I218_LM
), board_pch_lpt
},
7104 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPTLP_I218_V
), board_pch_lpt
},
7105 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_I218_LM2
), board_pch_lpt
},
7106 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_I218_V2
), board_pch_lpt
},
7107 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_I218_LM3
), board_pch_lpt
},
7108 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_I218_V3
), board_pch_lpt
},
7110 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */
7112 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
7114 static const struct dev_pm_ops e1000_pm_ops
= {
7115 #ifdef CONFIG_PM_SLEEP
7116 .suspend
= e1000e_pm_suspend
,
7117 .resume
= e1000e_pm_resume
,
7118 .freeze
= e1000e_pm_freeze
,
7119 .thaw
= e1000e_pm_thaw
,
7120 .poweroff
= e1000e_pm_suspend
,
7121 .restore
= e1000e_pm_resume
,
7123 SET_RUNTIME_PM_OPS(e1000e_pm_runtime_suspend
, e1000e_pm_runtime_resume
,
7124 e1000e_pm_runtime_idle
)
7127 /* PCI Device API Driver */
7128 static struct pci_driver e1000_driver
= {
7129 .name
= e1000e_driver_name
,
7130 .id_table
= e1000_pci_tbl
,
7131 .probe
= e1000_probe
,
7132 .remove
= e1000_remove
,
7134 .pm
= &e1000_pm_ops
,
7136 .shutdown
= e1000_shutdown
,
7137 .err_handler
= &e1000_err_handler
7141 * e1000_init_module - Driver Registration Routine
7143 * e1000_init_module is the first routine called when the driver is
7144 * loaded. All it does is register with the PCI subsystem.
7146 static int __init
e1000_init_module(void)
7149 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
7150 e1000e_driver_version
);
7151 pr_info("Copyright(c) 1999 - 2014 Intel Corporation.\n");
7152 ret
= pci_register_driver(&e1000_driver
);
7156 module_init(e1000_init_module
);
7159 * e1000_exit_module - Driver Exit Cleanup Routine
7161 * e1000_exit_module is called just before the driver is removed
7164 static void __exit
e1000_exit_module(void)
7166 pci_unregister_driver(&e1000_driver
);
7168 module_exit(e1000_exit_module
);
7170 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
7171 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
7172 MODULE_LICENSE("GPL");
7173 MODULE_VERSION(DRV_VERSION
);