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
,
73 [board_pch_spt
] = &e1000_pch_spt_info
,
76 struct e1000_reg_info
{
81 static const struct e1000_reg_info e1000_reg_info_tbl
[] = {
82 /* General Registers */
84 {E1000_STATUS
, "STATUS"},
85 {E1000_CTRL_EXT
, "CTRL_EXT"},
87 /* Interrupt Registers */
92 {E1000_RDLEN(0), "RDLEN"},
93 {E1000_RDH(0), "RDH"},
94 {E1000_RDT(0), "RDT"},
96 {E1000_RXDCTL(0), "RXDCTL"},
98 {E1000_RDBAL(0), "RDBAL"},
99 {E1000_RDBAH(0), "RDBAH"},
100 {E1000_RDFH
, "RDFH"},
101 {E1000_RDFT
, "RDFT"},
102 {E1000_RDFHS
, "RDFHS"},
103 {E1000_RDFTS
, "RDFTS"},
104 {E1000_RDFPC
, "RDFPC"},
107 {E1000_TCTL
, "TCTL"},
108 {E1000_TDBAL(0), "TDBAL"},
109 {E1000_TDBAH(0), "TDBAH"},
110 {E1000_TDLEN(0), "TDLEN"},
111 {E1000_TDH(0), "TDH"},
112 {E1000_TDT(0), "TDT"},
113 {E1000_TIDV
, "TIDV"},
114 {E1000_TXDCTL(0), "TXDCTL"},
115 {E1000_TADV
, "TADV"},
116 {E1000_TARC(0), "TARC"},
117 {E1000_TDFH
, "TDFH"},
118 {E1000_TDFT
, "TDFT"},
119 {E1000_TDFHS
, "TDFHS"},
120 {E1000_TDFTS
, "TDFTS"},
121 {E1000_TDFPC
, "TDFPC"},
123 /* List Terminator */
128 * __ew32_prepare - prepare to write to MAC CSR register on certain parts
129 * @hw: pointer to the HW structure
131 * When updating the MAC CSR registers, the Manageability Engine (ME) could
132 * be accessing the registers at the same time. Normally, this is handled in
133 * h/w by an arbiter but on some parts there is a bug that acknowledges Host
134 * accesses later than it should which could result in the register to have
135 * an incorrect value. Workaround this by checking the FWSM register which
136 * has bit 24 set while ME is accessing MAC CSR registers, wait if it is set
137 * and try again a number of times.
139 s32
__ew32_prepare(struct e1000_hw
*hw
)
141 s32 i
= E1000_ICH_FWSM_PCIM2PCI_COUNT
;
143 while ((er32(FWSM
) & E1000_ICH_FWSM_PCIM2PCI
) && --i
)
149 void __ew32(struct e1000_hw
*hw
, unsigned long reg
, u32 val
)
151 if (hw
->adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
154 writel(val
, hw
->hw_addr
+ reg
);
158 * e1000_regdump - register printout routine
159 * @hw: pointer to the HW structure
160 * @reginfo: pointer to the register info table
162 static void e1000_regdump(struct e1000_hw
*hw
, struct e1000_reg_info
*reginfo
)
168 switch (reginfo
->ofs
) {
169 case E1000_RXDCTL(0):
170 for (n
= 0; n
< 2; n
++)
171 regs
[n
] = __er32(hw
, E1000_RXDCTL(n
));
173 case E1000_TXDCTL(0):
174 for (n
= 0; n
< 2; n
++)
175 regs
[n
] = __er32(hw
, E1000_TXDCTL(n
));
178 for (n
= 0; n
< 2; n
++)
179 regs
[n
] = __er32(hw
, E1000_TARC(n
));
182 pr_info("%-15s %08x\n",
183 reginfo
->name
, __er32(hw
, reginfo
->ofs
));
187 snprintf(rname
, 16, "%s%s", reginfo
->name
, "[0-1]");
188 pr_info("%-15s %08x %08x\n", rname
, regs
[0], regs
[1]);
191 static void e1000e_dump_ps_pages(struct e1000_adapter
*adapter
,
192 struct e1000_buffer
*bi
)
195 struct e1000_ps_page
*ps_page
;
197 for (i
= 0; i
< adapter
->rx_ps_pages
; i
++) {
198 ps_page
= &bi
->ps_pages
[i
];
201 pr_info("packet dump for ps_page %d:\n", i
);
202 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_ADDRESS
,
203 16, 1, page_address(ps_page
->page
),
210 * e1000e_dump - Print registers, Tx-ring and Rx-ring
211 * @adapter: board private structure
213 static void e1000e_dump(struct e1000_adapter
*adapter
)
215 struct net_device
*netdev
= adapter
->netdev
;
216 struct e1000_hw
*hw
= &adapter
->hw
;
217 struct e1000_reg_info
*reginfo
;
218 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
219 struct e1000_tx_desc
*tx_desc
;
224 struct e1000_buffer
*buffer_info
;
225 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
226 union e1000_rx_desc_packet_split
*rx_desc_ps
;
227 union e1000_rx_desc_extended
*rx_desc
;
237 if (!netif_msg_hw(adapter
))
240 /* Print netdevice Info */
242 dev_info(&adapter
->pdev
->dev
, "Net device Info\n");
243 pr_info("Device Name state trans_start last_rx\n");
244 pr_info("%-15s %016lX %016lX %016lX\n", netdev
->name
,
245 netdev
->state
, netdev
->trans_start
, netdev
->last_rx
);
248 /* Print Registers */
249 dev_info(&adapter
->pdev
->dev
, "Register Dump\n");
250 pr_info(" Register Name Value\n");
251 for (reginfo
= (struct e1000_reg_info
*)e1000_reg_info_tbl
;
252 reginfo
->name
; reginfo
++) {
253 e1000_regdump(hw
, reginfo
);
256 /* Print Tx Ring Summary */
257 if (!netdev
|| !netif_running(netdev
))
260 dev_info(&adapter
->pdev
->dev
, "Tx Ring Summary\n");
261 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
262 buffer_info
= &tx_ring
->buffer_info
[tx_ring
->next_to_clean
];
263 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n",
264 0, tx_ring
->next_to_use
, tx_ring
->next_to_clean
,
265 (unsigned long long)buffer_info
->dma
,
267 buffer_info
->next_to_watch
,
268 (unsigned long long)buffer_info
->time_stamp
);
271 if (!netif_msg_tx_done(adapter
))
272 goto rx_ring_summary
;
274 dev_info(&adapter
->pdev
->dev
, "Tx Ring Dump\n");
276 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
278 * Legacy Transmit Descriptor
279 * +--------------------------------------------------------------+
280 * 0 | Buffer Address [63:0] (Reserved on Write Back) |
281 * +--------------------------------------------------------------+
282 * 8 | Special | CSS | Status | CMD | CSO | Length |
283 * +--------------------------------------------------------------+
284 * 63 48 47 36 35 32 31 24 23 16 15 0
286 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
287 * 63 48 47 40 39 32 31 16 15 8 7 0
288 * +----------------------------------------------------------------+
289 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
290 * +----------------------------------------------------------------+
291 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
292 * +----------------------------------------------------------------+
293 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
295 * Extended Data Descriptor (DTYP=0x1)
296 * +----------------------------------------------------------------+
297 * 0 | Buffer Address [63:0] |
298 * +----------------------------------------------------------------+
299 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
300 * +----------------------------------------------------------------+
301 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
303 pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n");
304 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n");
305 pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Data format\n");
306 for (i
= 0; tx_ring
->desc
&& (i
< tx_ring
->count
); i
++) {
307 const char *next_desc
;
308 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
309 buffer_info
= &tx_ring
->buffer_info
[i
];
310 u0
= (struct my_u0
*)tx_desc
;
311 if (i
== tx_ring
->next_to_use
&& i
== tx_ring
->next_to_clean
)
312 next_desc
= " NTC/U";
313 else if (i
== tx_ring
->next_to_use
)
315 else if (i
== tx_ring
->next_to_clean
)
319 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n",
320 (!(le64_to_cpu(u0
->b
) & (1 << 29)) ? 'l' :
321 ((le64_to_cpu(u0
->b
) & (1 << 20)) ? 'd' : 'c')),
323 (unsigned long long)le64_to_cpu(u0
->a
),
324 (unsigned long long)le64_to_cpu(u0
->b
),
325 (unsigned long long)buffer_info
->dma
,
326 buffer_info
->length
, buffer_info
->next_to_watch
,
327 (unsigned long long)buffer_info
->time_stamp
,
328 buffer_info
->skb
, next_desc
);
330 if (netif_msg_pktdata(adapter
) && buffer_info
->skb
)
331 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_ADDRESS
,
332 16, 1, buffer_info
->skb
->data
,
333 buffer_info
->skb
->len
, true);
336 /* Print Rx Ring Summary */
338 dev_info(&adapter
->pdev
->dev
, "Rx Ring Summary\n");
339 pr_info("Queue [NTU] [NTC]\n");
340 pr_info(" %5d %5X %5X\n",
341 0, rx_ring
->next_to_use
, rx_ring
->next_to_clean
);
344 if (!netif_msg_rx_status(adapter
))
347 dev_info(&adapter
->pdev
->dev
, "Rx Ring Dump\n");
348 switch (adapter
->rx_ps_pages
) {
352 /* [Extended] Packet Split Receive Descriptor Format
354 * +-----------------------------------------------------+
355 * 0 | Buffer Address 0 [63:0] |
356 * +-----------------------------------------------------+
357 * 8 | Buffer Address 1 [63:0] |
358 * +-----------------------------------------------------+
359 * 16 | Buffer Address 2 [63:0] |
360 * +-----------------------------------------------------+
361 * 24 | Buffer Address 3 [63:0] |
362 * +-----------------------------------------------------+
364 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");
365 /* [Extended] Receive Descriptor (Write-Back) Format
367 * 63 48 47 32 31 13 12 8 7 4 3 0
368 * +------------------------------------------------------+
369 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
370 * | Checksum | Ident | | Queue | | Type |
371 * +------------------------------------------------------+
372 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
373 * +------------------------------------------------------+
374 * 63 48 47 32 31 20 19 0
376 pr_info("RWB[desc] [ck ipid mrqhsh] [vl l0 ee es] [ l3 l2 l1 hs] [reserved ] ---------------- [bi->skb] <-- Ext Rx Write-Back format\n");
377 for (i
= 0; i
< rx_ring
->count
; i
++) {
378 const char *next_desc
;
379 buffer_info
= &rx_ring
->buffer_info
[i
];
380 rx_desc_ps
= E1000_RX_DESC_PS(*rx_ring
, i
);
381 u1
= (struct my_u1
*)rx_desc_ps
;
383 le32_to_cpu(rx_desc_ps
->wb
.middle
.status_error
);
385 if (i
== rx_ring
->next_to_use
)
387 else if (i
== rx_ring
->next_to_clean
)
392 if (staterr
& E1000_RXD_STAT_DD
) {
393 /* Descriptor Done */
394 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n",
396 (unsigned long long)le64_to_cpu(u1
->a
),
397 (unsigned long long)le64_to_cpu(u1
->b
),
398 (unsigned long long)le64_to_cpu(u1
->c
),
399 (unsigned long long)le64_to_cpu(u1
->d
),
400 buffer_info
->skb
, next_desc
);
402 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n",
404 (unsigned long long)le64_to_cpu(u1
->a
),
405 (unsigned long long)le64_to_cpu(u1
->b
),
406 (unsigned long long)le64_to_cpu(u1
->c
),
407 (unsigned long long)le64_to_cpu(u1
->d
),
408 (unsigned long long)buffer_info
->dma
,
409 buffer_info
->skb
, next_desc
);
411 if (netif_msg_pktdata(adapter
))
412 e1000e_dump_ps_pages(adapter
,
419 /* Extended Receive Descriptor (Read) Format
421 * +-----------------------------------------------------+
422 * 0 | Buffer Address [63:0] |
423 * +-----------------------------------------------------+
425 * +-----------------------------------------------------+
427 pr_info("R [desc] [buf addr 63:0 ] [reserved 63:0 ] [bi->dma ] [bi->skb] <-- Ext (Read) format\n");
428 /* Extended Receive Descriptor (Write-Back) Format
430 * 63 48 47 32 31 24 23 4 3 0
431 * +------------------------------------------------------+
433 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS |
434 * | Packet | IP | | | Type |
435 * | Checksum | Ident | | | |
436 * +------------------------------------------------------+
437 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
438 * +------------------------------------------------------+
439 * 63 48 47 32 31 20 19 0
441 pr_info("RWB[desc] [cs ipid mrq] [vt ln xe xs] [bi->skb] <-- Ext (Write-Back) format\n");
443 for (i
= 0; i
< rx_ring
->count
; i
++) {
444 const char *next_desc
;
446 buffer_info
= &rx_ring
->buffer_info
[i
];
447 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
448 u1
= (struct my_u1
*)rx_desc
;
449 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
451 if (i
== rx_ring
->next_to_use
)
453 else if (i
== rx_ring
->next_to_clean
)
458 if (staterr
& E1000_RXD_STAT_DD
) {
459 /* Descriptor Done */
460 pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n",
462 (unsigned long long)le64_to_cpu(u1
->a
),
463 (unsigned long long)le64_to_cpu(u1
->b
),
464 buffer_info
->skb
, next_desc
);
466 pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n",
468 (unsigned long long)le64_to_cpu(u1
->a
),
469 (unsigned long long)le64_to_cpu(u1
->b
),
470 (unsigned long long)buffer_info
->dma
,
471 buffer_info
->skb
, next_desc
);
473 if (netif_msg_pktdata(adapter
) &&
475 print_hex_dump(KERN_INFO
, "",
476 DUMP_PREFIX_ADDRESS
, 16,
478 buffer_info
->skb
->data
,
479 adapter
->rx_buffer_len
,
487 * e1000_desc_unused - calculate if we have unused descriptors
489 static int e1000_desc_unused(struct e1000_ring
*ring
)
491 if (ring
->next_to_clean
> ring
->next_to_use
)
492 return ring
->next_to_clean
- ring
->next_to_use
- 1;
494 return ring
->count
+ ring
->next_to_clean
- ring
->next_to_use
- 1;
498 * e1000e_systim_to_hwtstamp - convert system time value to hw time stamp
499 * @adapter: board private structure
500 * @hwtstamps: time stamp structure to update
501 * @systim: unsigned 64bit system time value.
503 * Convert the system time value stored in the RX/TXSTMP registers into a
504 * hwtstamp which can be used by the upper level time stamping functions.
506 * The 'systim_lock' spinlock is used to protect the consistency of the
507 * system time value. This is needed because reading the 64 bit time
508 * value involves reading two 32 bit registers. The first read latches the
511 static void e1000e_systim_to_hwtstamp(struct e1000_adapter
*adapter
,
512 struct skb_shared_hwtstamps
*hwtstamps
,
518 spin_lock_irqsave(&adapter
->systim_lock
, flags
);
519 ns
= timecounter_cyc2time(&adapter
->tc
, systim
);
520 spin_unlock_irqrestore(&adapter
->systim_lock
, flags
);
522 memset(hwtstamps
, 0, sizeof(*hwtstamps
));
523 hwtstamps
->hwtstamp
= ns_to_ktime(ns
);
527 * e1000e_rx_hwtstamp - utility function which checks for Rx time stamp
528 * @adapter: board private structure
529 * @status: descriptor extended error and status field
530 * @skb: particular skb to include time stamp
532 * If the time stamp is valid, convert it into the timecounter ns value
533 * and store that result into the shhwtstamps structure which is passed
534 * up the network stack.
536 static void e1000e_rx_hwtstamp(struct e1000_adapter
*adapter
, u32 status
,
539 struct e1000_hw
*hw
= &adapter
->hw
;
542 if (!(adapter
->flags
& FLAG_HAS_HW_TIMESTAMP
) ||
543 !(status
& E1000_RXDEXT_STATERR_TST
) ||
544 !(er32(TSYNCRXCTL
) & E1000_TSYNCRXCTL_VALID
))
547 /* The Rx time stamp registers contain the time stamp. No other
548 * received packet will be time stamped until the Rx time stamp
549 * registers are read. Because only one packet can be time stamped
550 * at a time, the register values must belong to this packet and
551 * therefore none of the other additional attributes need to be
554 rxstmp
= (u64
)er32(RXSTMPL
);
555 rxstmp
|= (u64
)er32(RXSTMPH
) << 32;
556 e1000e_systim_to_hwtstamp(adapter
, skb_hwtstamps(skb
), rxstmp
);
558 adapter
->flags2
&= ~FLAG2_CHECK_RX_HWTSTAMP
;
562 * e1000_receive_skb - helper function to handle Rx indications
563 * @adapter: board private structure
564 * @staterr: descriptor extended error and status field as written by hardware
565 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
566 * @skb: pointer to sk_buff to be indicated to stack
568 static void e1000_receive_skb(struct e1000_adapter
*adapter
,
569 struct net_device
*netdev
, struct sk_buff
*skb
,
570 u32 staterr
, __le16 vlan
)
572 u16 tag
= le16_to_cpu(vlan
);
574 e1000e_rx_hwtstamp(adapter
, staterr
, skb
);
576 skb
->protocol
= eth_type_trans(skb
, netdev
);
578 if (staterr
& E1000_RXD_STAT_VP
)
579 __vlan_hwaccel_put_tag(skb
, htons(ETH_P_8021Q
), tag
);
581 napi_gro_receive(&adapter
->napi
, skb
);
585 * e1000_rx_checksum - Receive Checksum Offload
586 * @adapter: board private structure
587 * @status_err: receive descriptor status and error fields
588 * @csum: receive descriptor csum field
589 * @sk_buff: socket buffer with received data
591 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
594 u16 status
= (u16
)status_err
;
595 u8 errors
= (u8
)(status_err
>> 24);
597 skb_checksum_none_assert(skb
);
599 /* Rx checksum disabled */
600 if (!(adapter
->netdev
->features
& NETIF_F_RXCSUM
))
603 /* Ignore Checksum bit is set */
604 if (status
& E1000_RXD_STAT_IXSM
)
607 /* TCP/UDP checksum error bit or IP checksum error bit is set */
608 if (errors
& (E1000_RXD_ERR_TCPE
| E1000_RXD_ERR_IPE
)) {
609 /* let the stack verify checksum errors */
610 adapter
->hw_csum_err
++;
614 /* TCP/UDP Checksum has not been calculated */
615 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
618 /* It must be a TCP or UDP packet with a valid checksum */
619 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
620 adapter
->hw_csum_good
++;
623 static void e1000e_update_rdt_wa(struct e1000_ring
*rx_ring
, unsigned int i
)
625 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
626 struct e1000_hw
*hw
= &adapter
->hw
;
627 s32 ret_val
= __ew32_prepare(hw
);
629 writel(i
, rx_ring
->tail
);
631 if (unlikely(!ret_val
&& (i
!= readl(rx_ring
->tail
)))) {
632 u32 rctl
= er32(RCTL
);
634 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
635 e_err("ME firmware caused invalid RDT - resetting\n");
636 schedule_work(&adapter
->reset_task
);
640 static void e1000e_update_tdt_wa(struct e1000_ring
*tx_ring
, unsigned int i
)
642 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
643 struct e1000_hw
*hw
= &adapter
->hw
;
644 s32 ret_val
= __ew32_prepare(hw
);
646 writel(i
, tx_ring
->tail
);
648 if (unlikely(!ret_val
&& (i
!= readl(tx_ring
->tail
)))) {
649 u32 tctl
= er32(TCTL
);
651 ew32(TCTL
, tctl
& ~E1000_TCTL_EN
);
652 e_err("ME firmware caused invalid TDT - resetting\n");
653 schedule_work(&adapter
->reset_task
);
658 * e1000_alloc_rx_buffers - Replace used receive buffers
659 * @rx_ring: Rx descriptor ring
661 static void e1000_alloc_rx_buffers(struct e1000_ring
*rx_ring
,
662 int cleaned_count
, gfp_t gfp
)
664 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
665 struct net_device
*netdev
= adapter
->netdev
;
666 struct pci_dev
*pdev
= adapter
->pdev
;
667 union e1000_rx_desc_extended
*rx_desc
;
668 struct e1000_buffer
*buffer_info
;
671 unsigned int bufsz
= adapter
->rx_buffer_len
;
673 i
= rx_ring
->next_to_use
;
674 buffer_info
= &rx_ring
->buffer_info
[i
];
676 while (cleaned_count
--) {
677 skb
= buffer_info
->skb
;
683 skb
= __netdev_alloc_skb_ip_align(netdev
, bufsz
, gfp
);
685 /* Better luck next round */
686 adapter
->alloc_rx_buff_failed
++;
690 buffer_info
->skb
= skb
;
692 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
693 adapter
->rx_buffer_len
,
695 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
696 dev_err(&pdev
->dev
, "Rx DMA map failed\n");
697 adapter
->rx_dma_failed
++;
701 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
702 rx_desc
->read
.buffer_addr
= cpu_to_le64(buffer_info
->dma
);
704 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
705 /* Force memory writes to complete before letting h/w
706 * know there are new descriptors to fetch. (Only
707 * applicable for weak-ordered memory model archs,
711 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
712 e1000e_update_rdt_wa(rx_ring
, i
);
714 writel(i
, rx_ring
->tail
);
717 if (i
== rx_ring
->count
)
719 buffer_info
= &rx_ring
->buffer_info
[i
];
722 rx_ring
->next_to_use
= i
;
726 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
727 * @rx_ring: Rx descriptor ring
729 static void e1000_alloc_rx_buffers_ps(struct e1000_ring
*rx_ring
,
730 int cleaned_count
, gfp_t gfp
)
732 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
733 struct net_device
*netdev
= adapter
->netdev
;
734 struct pci_dev
*pdev
= adapter
->pdev
;
735 union e1000_rx_desc_packet_split
*rx_desc
;
736 struct e1000_buffer
*buffer_info
;
737 struct e1000_ps_page
*ps_page
;
741 i
= rx_ring
->next_to_use
;
742 buffer_info
= &rx_ring
->buffer_info
[i
];
744 while (cleaned_count
--) {
745 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
747 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
748 ps_page
= &buffer_info
->ps_pages
[j
];
749 if (j
>= adapter
->rx_ps_pages
) {
750 /* all unused desc entries get hw null ptr */
751 rx_desc
->read
.buffer_addr
[j
+ 1] =
755 if (!ps_page
->page
) {
756 ps_page
->page
= alloc_page(gfp
);
757 if (!ps_page
->page
) {
758 adapter
->alloc_rx_buff_failed
++;
761 ps_page
->dma
= dma_map_page(&pdev
->dev
,
765 if (dma_mapping_error(&pdev
->dev
,
767 dev_err(&adapter
->pdev
->dev
,
768 "Rx DMA page map failed\n");
769 adapter
->rx_dma_failed
++;
773 /* Refresh the desc even if buffer_addrs
774 * didn't change because each write-back
777 rx_desc
->read
.buffer_addr
[j
+ 1] =
778 cpu_to_le64(ps_page
->dma
);
781 skb
= __netdev_alloc_skb_ip_align(netdev
, adapter
->rx_ps_bsize0
,
785 adapter
->alloc_rx_buff_failed
++;
789 buffer_info
->skb
= skb
;
790 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
791 adapter
->rx_ps_bsize0
,
793 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
794 dev_err(&pdev
->dev
, "Rx DMA map failed\n");
795 adapter
->rx_dma_failed
++;
797 dev_kfree_skb_any(skb
);
798 buffer_info
->skb
= NULL
;
802 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
804 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
805 /* Force memory writes to complete before letting h/w
806 * know there are new descriptors to fetch. (Only
807 * applicable for weak-ordered memory model archs,
811 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
812 e1000e_update_rdt_wa(rx_ring
, i
<< 1);
814 writel(i
<< 1, rx_ring
->tail
);
818 if (i
== rx_ring
->count
)
820 buffer_info
= &rx_ring
->buffer_info
[i
];
824 rx_ring
->next_to_use
= i
;
828 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
829 * @rx_ring: Rx descriptor ring
830 * @cleaned_count: number of buffers to allocate this pass
833 static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring
*rx_ring
,
834 int cleaned_count
, gfp_t gfp
)
836 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
837 struct net_device
*netdev
= adapter
->netdev
;
838 struct pci_dev
*pdev
= adapter
->pdev
;
839 union e1000_rx_desc_extended
*rx_desc
;
840 struct e1000_buffer
*buffer_info
;
843 unsigned int bufsz
= 256 - 16; /* for skb_reserve */
845 i
= rx_ring
->next_to_use
;
846 buffer_info
= &rx_ring
->buffer_info
[i
];
848 while (cleaned_count
--) {
849 skb
= buffer_info
->skb
;
855 skb
= __netdev_alloc_skb_ip_align(netdev
, bufsz
, gfp
);
856 if (unlikely(!skb
)) {
857 /* Better luck next round */
858 adapter
->alloc_rx_buff_failed
++;
862 buffer_info
->skb
= skb
;
864 /* allocate a new page if necessary */
865 if (!buffer_info
->page
) {
866 buffer_info
->page
= alloc_page(gfp
);
867 if (unlikely(!buffer_info
->page
)) {
868 adapter
->alloc_rx_buff_failed
++;
873 if (!buffer_info
->dma
) {
874 buffer_info
->dma
= dma_map_page(&pdev
->dev
,
875 buffer_info
->page
, 0,
878 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
879 adapter
->alloc_rx_buff_failed
++;
884 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
885 rx_desc
->read
.buffer_addr
= cpu_to_le64(buffer_info
->dma
);
887 if (unlikely(++i
== rx_ring
->count
))
889 buffer_info
= &rx_ring
->buffer_info
[i
];
892 if (likely(rx_ring
->next_to_use
!= i
)) {
893 rx_ring
->next_to_use
= i
;
894 if (unlikely(i
-- == 0))
895 i
= (rx_ring
->count
- 1);
897 /* Force memory writes to complete before letting h/w
898 * know there are new descriptors to fetch. (Only
899 * applicable for weak-ordered memory model archs,
903 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
904 e1000e_update_rdt_wa(rx_ring
, i
);
906 writel(i
, rx_ring
->tail
);
910 static inline void e1000_rx_hash(struct net_device
*netdev
, __le32 rss
,
913 if (netdev
->features
& NETIF_F_RXHASH
)
914 skb_set_hash(skb
, le32_to_cpu(rss
), PKT_HASH_TYPE_L3
);
918 * e1000_clean_rx_irq - Send received data up the network stack
919 * @rx_ring: Rx descriptor ring
921 * the return value indicates whether actual cleaning was done, there
922 * is no guarantee that everything was cleaned
924 static bool e1000_clean_rx_irq(struct e1000_ring
*rx_ring
, int *work_done
,
927 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
928 struct net_device
*netdev
= adapter
->netdev
;
929 struct pci_dev
*pdev
= adapter
->pdev
;
930 struct e1000_hw
*hw
= &adapter
->hw
;
931 union e1000_rx_desc_extended
*rx_desc
, *next_rxd
;
932 struct e1000_buffer
*buffer_info
, *next_buffer
;
935 int cleaned_count
= 0;
936 bool cleaned
= false;
937 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
939 i
= rx_ring
->next_to_clean
;
940 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
941 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
942 buffer_info
= &rx_ring
->buffer_info
[i
];
944 while (staterr
& E1000_RXD_STAT_DD
) {
947 if (*work_done
>= work_to_do
)
950 dma_rmb(); /* read descriptor and rx_buffer_info after status DD */
952 skb
= buffer_info
->skb
;
953 buffer_info
->skb
= NULL
;
955 prefetch(skb
->data
- NET_IP_ALIGN
);
958 if (i
== rx_ring
->count
)
960 next_rxd
= E1000_RX_DESC_EXT(*rx_ring
, i
);
963 next_buffer
= &rx_ring
->buffer_info
[i
];
967 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
968 adapter
->rx_buffer_len
, DMA_FROM_DEVICE
);
969 buffer_info
->dma
= 0;
971 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
973 /* !EOP means multiple descriptors were used to store a single
974 * packet, if that's the case we need to toss it. In fact, we
975 * need to toss every packet with the EOP bit clear and the
976 * next frame that _does_ have the EOP bit set, as it is by
977 * definition only a frame fragment
979 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
)))
980 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
982 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
983 /* All receives must fit into a single buffer */
984 e_dbg("Receive packet consumed multiple buffers\n");
986 buffer_info
->skb
= skb
;
987 if (staterr
& E1000_RXD_STAT_EOP
)
988 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
992 if (unlikely((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
993 !(netdev
->features
& NETIF_F_RXALL
))) {
995 buffer_info
->skb
= skb
;
999 /* adjust length to remove Ethernet CRC */
1000 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
1001 /* If configured to store CRC, don't subtract FCS,
1002 * but keep the FCS bytes out of the total_rx_bytes
1005 if (netdev
->features
& NETIF_F_RXFCS
)
1006 total_rx_bytes
-= 4;
1011 total_rx_bytes
+= length
;
1014 /* code added for copybreak, this should improve
1015 * performance for small packets with large amounts
1016 * of reassembly being done in the stack
1018 if (length
< copybreak
) {
1019 struct sk_buff
*new_skb
=
1020 napi_alloc_skb(&adapter
->napi
, length
);
1022 skb_copy_to_linear_data_offset(new_skb
,
1028 /* save the skb in buffer_info as good */
1029 buffer_info
->skb
= skb
;
1032 /* else just continue with the old one */
1034 /* end copybreak code */
1035 skb_put(skb
, length
);
1037 /* Receive Checksum Offload */
1038 e1000_rx_checksum(adapter
, staterr
, skb
);
1040 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1042 e1000_receive_skb(adapter
, netdev
, skb
, staterr
,
1043 rx_desc
->wb
.upper
.vlan
);
1046 rx_desc
->wb
.upper
.status_error
&= cpu_to_le32(~0xFF);
1048 /* return some buffers to hardware, one at a time is too slow */
1049 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
1050 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1055 /* use prefetched values */
1057 buffer_info
= next_buffer
;
1059 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1061 rx_ring
->next_to_clean
= i
;
1063 cleaned_count
= e1000_desc_unused(rx_ring
);
1065 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1067 adapter
->total_rx_bytes
+= total_rx_bytes
;
1068 adapter
->total_rx_packets
+= total_rx_packets
;
1072 static void e1000_put_txbuf(struct e1000_ring
*tx_ring
,
1073 struct e1000_buffer
*buffer_info
)
1075 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
1077 if (buffer_info
->dma
) {
1078 if (buffer_info
->mapped_as_page
)
1079 dma_unmap_page(&adapter
->pdev
->dev
, buffer_info
->dma
,
1080 buffer_info
->length
, DMA_TO_DEVICE
);
1082 dma_unmap_single(&adapter
->pdev
->dev
, buffer_info
->dma
,
1083 buffer_info
->length
, DMA_TO_DEVICE
);
1084 buffer_info
->dma
= 0;
1086 if (buffer_info
->skb
) {
1087 dev_kfree_skb_any(buffer_info
->skb
);
1088 buffer_info
->skb
= NULL
;
1090 buffer_info
->time_stamp
= 0;
1093 static void e1000_print_hw_hang(struct work_struct
*work
)
1095 struct e1000_adapter
*adapter
= container_of(work
,
1096 struct e1000_adapter
,
1098 struct net_device
*netdev
= adapter
->netdev
;
1099 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1100 unsigned int i
= tx_ring
->next_to_clean
;
1101 unsigned int eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1102 struct e1000_tx_desc
*eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1103 struct e1000_hw
*hw
= &adapter
->hw
;
1104 u16 phy_status
, phy_1000t_status
, phy_ext_status
;
1107 if (test_bit(__E1000_DOWN
, &adapter
->state
))
1110 if (!adapter
->tx_hang_recheck
&& (adapter
->flags2
& FLAG2_DMA_BURST
)) {
1111 /* May be block on write-back, flush and detect again
1112 * flush pending descriptor writebacks to memory
1114 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
1115 /* execute the writes immediately */
1117 /* Due to rare timing issues, write to TIDV again to ensure
1118 * the write is successful
1120 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
1121 /* execute the writes immediately */
1123 adapter
->tx_hang_recheck
= true;
1126 adapter
->tx_hang_recheck
= false;
1128 if (er32(TDH(0)) == er32(TDT(0))) {
1129 e_dbg("false hang detected, ignoring\n");
1133 /* Real hang detected */
1134 netif_stop_queue(netdev
);
1136 e1e_rphy(hw
, MII_BMSR
, &phy_status
);
1137 e1e_rphy(hw
, MII_STAT1000
, &phy_1000t_status
);
1138 e1e_rphy(hw
, MII_ESTATUS
, &phy_ext_status
);
1140 pci_read_config_word(adapter
->pdev
, PCI_STATUS
, &pci_status
);
1142 /* detected Hardware unit hang */
1143 e_err("Detected Hardware Unit Hang:\n"
1146 " next_to_use <%x>\n"
1147 " next_to_clean <%x>\n"
1148 "buffer_info[next_to_clean]:\n"
1149 " time_stamp <%lx>\n"
1150 " next_to_watch <%x>\n"
1152 " next_to_watch.status <%x>\n"
1155 "PHY 1000BASE-T Status <%x>\n"
1156 "PHY Extended Status <%x>\n"
1157 "PCI Status <%x>\n",
1158 readl(tx_ring
->head
), readl(tx_ring
->tail
), tx_ring
->next_to_use
,
1159 tx_ring
->next_to_clean
, tx_ring
->buffer_info
[eop
].time_stamp
,
1160 eop
, jiffies
, eop_desc
->upper
.fields
.status
, er32(STATUS
),
1161 phy_status
, phy_1000t_status
, phy_ext_status
, pci_status
);
1163 e1000e_dump(adapter
);
1165 /* Suggest workaround for known h/w issue */
1166 if ((hw
->mac
.type
== e1000_pchlan
) && (er32(CTRL
) & E1000_CTRL_TFCE
))
1167 e_err("Try turning off Tx pause (flow control) via ethtool\n");
1171 * e1000e_tx_hwtstamp_work - check for Tx time stamp
1172 * @work: pointer to work struct
1174 * This work function polls the TSYNCTXCTL valid bit to determine when a
1175 * timestamp has been taken for the current stored skb. The timestamp must
1176 * be for this skb because only one such packet is allowed in the queue.
1178 static void e1000e_tx_hwtstamp_work(struct work_struct
*work
)
1180 struct e1000_adapter
*adapter
= container_of(work
, struct e1000_adapter
,
1182 struct e1000_hw
*hw
= &adapter
->hw
;
1184 if (er32(TSYNCTXCTL
) & E1000_TSYNCTXCTL_VALID
) {
1185 struct skb_shared_hwtstamps shhwtstamps
;
1188 txstmp
= er32(TXSTMPL
);
1189 txstmp
|= (u64
)er32(TXSTMPH
) << 32;
1191 e1000e_systim_to_hwtstamp(adapter
, &shhwtstamps
, txstmp
);
1193 skb_tstamp_tx(adapter
->tx_hwtstamp_skb
, &shhwtstamps
);
1194 dev_kfree_skb_any(adapter
->tx_hwtstamp_skb
);
1195 adapter
->tx_hwtstamp_skb
= NULL
;
1196 } else if (time_after(jiffies
, adapter
->tx_hwtstamp_start
1197 + adapter
->tx_timeout_factor
* HZ
)) {
1198 dev_kfree_skb_any(adapter
->tx_hwtstamp_skb
);
1199 adapter
->tx_hwtstamp_skb
= NULL
;
1200 adapter
->tx_hwtstamp_timeouts
++;
1201 e_warn("clearing Tx timestamp hang\n");
1203 /* reschedule to check later */
1204 schedule_work(&adapter
->tx_hwtstamp_work
);
1209 * e1000_clean_tx_irq - Reclaim resources after transmit completes
1210 * @tx_ring: Tx descriptor ring
1212 * the return value indicates whether actual cleaning was done, there
1213 * is no guarantee that everything was cleaned
1215 static bool e1000_clean_tx_irq(struct e1000_ring
*tx_ring
)
1217 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
1218 struct net_device
*netdev
= adapter
->netdev
;
1219 struct e1000_hw
*hw
= &adapter
->hw
;
1220 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
1221 struct e1000_buffer
*buffer_info
;
1222 unsigned int i
, eop
;
1223 unsigned int count
= 0;
1224 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
1225 unsigned int bytes_compl
= 0, pkts_compl
= 0;
1227 i
= tx_ring
->next_to_clean
;
1228 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1229 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1231 while ((eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
1232 (count
< tx_ring
->count
)) {
1233 bool cleaned
= false;
1235 dma_rmb(); /* read buffer_info after eop_desc */
1236 for (; !cleaned
; count
++) {
1237 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
1238 buffer_info
= &tx_ring
->buffer_info
[i
];
1239 cleaned
= (i
== eop
);
1242 total_tx_packets
+= buffer_info
->segs
;
1243 total_tx_bytes
+= buffer_info
->bytecount
;
1244 if (buffer_info
->skb
) {
1245 bytes_compl
+= buffer_info
->skb
->len
;
1250 e1000_put_txbuf(tx_ring
, buffer_info
);
1251 tx_desc
->upper
.data
= 0;
1254 if (i
== tx_ring
->count
)
1258 if (i
== tx_ring
->next_to_use
)
1260 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1261 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1264 tx_ring
->next_to_clean
= i
;
1266 netdev_completed_queue(netdev
, pkts_compl
, bytes_compl
);
1268 #define TX_WAKE_THRESHOLD 32
1269 if (count
&& netif_carrier_ok(netdev
) &&
1270 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
1271 /* Make sure that anybody stopping the queue after this
1272 * sees the new next_to_clean.
1276 if (netif_queue_stopped(netdev
) &&
1277 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
1278 netif_wake_queue(netdev
);
1279 ++adapter
->restart_queue
;
1283 if (adapter
->detect_tx_hung
) {
1284 /* Detect a transmit hang in hardware, this serializes the
1285 * check with the clearing of time_stamp and movement of i
1287 adapter
->detect_tx_hung
= false;
1288 if (tx_ring
->buffer_info
[i
].time_stamp
&&
1289 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
1290 + (adapter
->tx_timeout_factor
* HZ
)) &&
1291 !(er32(STATUS
) & E1000_STATUS_TXOFF
))
1292 schedule_work(&adapter
->print_hang_task
);
1294 adapter
->tx_hang_recheck
= false;
1296 adapter
->total_tx_bytes
+= total_tx_bytes
;
1297 adapter
->total_tx_packets
+= total_tx_packets
;
1298 return count
< tx_ring
->count
;
1302 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
1303 * @rx_ring: Rx descriptor ring
1305 * the return value indicates whether actual cleaning was done, there
1306 * is no guarantee that everything was cleaned
1308 static bool e1000_clean_rx_irq_ps(struct e1000_ring
*rx_ring
, int *work_done
,
1311 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1312 struct e1000_hw
*hw
= &adapter
->hw
;
1313 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
1314 struct net_device
*netdev
= adapter
->netdev
;
1315 struct pci_dev
*pdev
= adapter
->pdev
;
1316 struct e1000_buffer
*buffer_info
, *next_buffer
;
1317 struct e1000_ps_page
*ps_page
;
1318 struct sk_buff
*skb
;
1320 u32 length
, staterr
;
1321 int cleaned_count
= 0;
1322 bool cleaned
= false;
1323 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
1325 i
= rx_ring
->next_to_clean
;
1326 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
1327 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1328 buffer_info
= &rx_ring
->buffer_info
[i
];
1330 while (staterr
& E1000_RXD_STAT_DD
) {
1331 if (*work_done
>= work_to_do
)
1334 skb
= buffer_info
->skb
;
1335 dma_rmb(); /* read descriptor and rx_buffer_info after status DD */
1337 /* in the packet split case this is header only */
1338 prefetch(skb
->data
- NET_IP_ALIGN
);
1341 if (i
== rx_ring
->count
)
1343 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
1346 next_buffer
= &rx_ring
->buffer_info
[i
];
1350 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1351 adapter
->rx_ps_bsize0
, DMA_FROM_DEVICE
);
1352 buffer_info
->dma
= 0;
1354 /* see !EOP comment in other Rx routine */
1355 if (!(staterr
& E1000_RXD_STAT_EOP
))
1356 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
1358 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
1359 e_dbg("Packet Split buffers didn't pick up the full packet\n");
1360 dev_kfree_skb_irq(skb
);
1361 if (staterr
& E1000_RXD_STAT_EOP
)
1362 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1366 if (unlikely((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
1367 !(netdev
->features
& NETIF_F_RXALL
))) {
1368 dev_kfree_skb_irq(skb
);
1372 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
1375 e_dbg("Last part of the packet spanning multiple descriptors\n");
1376 dev_kfree_skb_irq(skb
);
1381 skb_put(skb
, length
);
1384 /* this looks ugly, but it seems compiler issues make
1385 * it more efficient than reusing j
1387 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
1389 /* page alloc/put takes too long and effects small
1390 * packet throughput, so unsplit small packets and
1391 * save the alloc/put only valid in softirq (napi)
1392 * context to call kmap_*
1394 if (l1
&& (l1
<= copybreak
) &&
1395 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
1398 ps_page
= &buffer_info
->ps_pages
[0];
1400 /* there is no documentation about how to call
1401 * kmap_atomic, so we can't hold the mapping
1404 dma_sync_single_for_cpu(&pdev
->dev
,
1408 vaddr
= kmap_atomic(ps_page
->page
);
1409 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
1410 kunmap_atomic(vaddr
);
1411 dma_sync_single_for_device(&pdev
->dev
,
1416 /* remove the CRC */
1417 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
1418 if (!(netdev
->features
& NETIF_F_RXFCS
))
1427 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1428 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
1432 ps_page
= &buffer_info
->ps_pages
[j
];
1433 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1436 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
1437 ps_page
->page
= NULL
;
1439 skb
->data_len
+= length
;
1440 skb
->truesize
+= PAGE_SIZE
;
1443 /* strip the ethernet crc, problem is we're using pages now so
1444 * this whole operation can get a little cpu intensive
1446 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
1447 if (!(netdev
->features
& NETIF_F_RXFCS
))
1448 pskb_trim(skb
, skb
->len
- 4);
1452 total_rx_bytes
+= skb
->len
;
1455 e1000_rx_checksum(adapter
, staterr
, skb
);
1457 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1459 if (rx_desc
->wb
.upper
.header_status
&
1460 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
1461 adapter
->rx_hdr_split
++;
1463 e1000_receive_skb(adapter
, netdev
, skb
, staterr
,
1464 rx_desc
->wb
.middle
.vlan
);
1467 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
1468 buffer_info
->skb
= NULL
;
1470 /* return some buffers to hardware, one at a time is too slow */
1471 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
1472 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1477 /* use prefetched values */
1479 buffer_info
= next_buffer
;
1481 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1483 rx_ring
->next_to_clean
= i
;
1485 cleaned_count
= e1000_desc_unused(rx_ring
);
1487 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1489 adapter
->total_rx_bytes
+= total_rx_bytes
;
1490 adapter
->total_rx_packets
+= total_rx_packets
;
1495 * e1000_consume_page - helper function
1497 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
1502 skb
->data_len
+= length
;
1503 skb
->truesize
+= PAGE_SIZE
;
1507 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1508 * @adapter: board private structure
1510 * the return value indicates whether actual cleaning was done, there
1511 * is no guarantee that everything was cleaned
1513 static bool e1000_clean_jumbo_rx_irq(struct e1000_ring
*rx_ring
, int *work_done
,
1516 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1517 struct net_device
*netdev
= adapter
->netdev
;
1518 struct pci_dev
*pdev
= adapter
->pdev
;
1519 union e1000_rx_desc_extended
*rx_desc
, *next_rxd
;
1520 struct e1000_buffer
*buffer_info
, *next_buffer
;
1521 u32 length
, staterr
;
1523 int cleaned_count
= 0;
1524 bool cleaned
= false;
1525 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
1526 struct skb_shared_info
*shinfo
;
1528 i
= rx_ring
->next_to_clean
;
1529 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
1530 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1531 buffer_info
= &rx_ring
->buffer_info
[i
];
1533 while (staterr
& E1000_RXD_STAT_DD
) {
1534 struct sk_buff
*skb
;
1536 if (*work_done
>= work_to_do
)
1539 dma_rmb(); /* read descriptor and rx_buffer_info after status DD */
1541 skb
= buffer_info
->skb
;
1542 buffer_info
->skb
= NULL
;
1545 if (i
== rx_ring
->count
)
1547 next_rxd
= E1000_RX_DESC_EXT(*rx_ring
, i
);
1550 next_buffer
= &rx_ring
->buffer_info
[i
];
1554 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
, PAGE_SIZE
,
1556 buffer_info
->dma
= 0;
1558 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
1560 /* errors is only valid for DD + EOP descriptors */
1561 if (unlikely((staterr
& E1000_RXD_STAT_EOP
) &&
1562 ((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
1563 !(netdev
->features
& NETIF_F_RXALL
)))) {
1564 /* recycle both page and skb */
1565 buffer_info
->skb
= skb
;
1566 /* an error means any chain goes out the window too */
1567 if (rx_ring
->rx_skb_top
)
1568 dev_kfree_skb_irq(rx_ring
->rx_skb_top
);
1569 rx_ring
->rx_skb_top
= NULL
;
1572 #define rxtop (rx_ring->rx_skb_top)
1573 if (!(staterr
& E1000_RXD_STAT_EOP
)) {
1574 /* this descriptor is only the beginning (or middle) */
1576 /* this is the beginning of a chain */
1578 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
1581 /* this is the middle of a chain */
1582 shinfo
= skb_shinfo(rxtop
);
1583 skb_fill_page_desc(rxtop
, shinfo
->nr_frags
,
1584 buffer_info
->page
, 0,
1586 /* re-use the skb, only consumed the page */
1587 buffer_info
->skb
= skb
;
1589 e1000_consume_page(buffer_info
, rxtop
, length
);
1593 /* end of the chain */
1594 shinfo
= skb_shinfo(rxtop
);
1595 skb_fill_page_desc(rxtop
, shinfo
->nr_frags
,
1596 buffer_info
->page
, 0,
1598 /* re-use the current skb, we only consumed the
1601 buffer_info
->skb
= skb
;
1604 e1000_consume_page(buffer_info
, skb
, length
);
1606 /* no chain, got EOP, this buf is the packet
1607 * copybreak to save the put_page/alloc_page
1609 if (length
<= copybreak
&&
1610 skb_tailroom(skb
) >= length
) {
1612 vaddr
= kmap_atomic(buffer_info
->page
);
1613 memcpy(skb_tail_pointer(skb
), vaddr
,
1615 kunmap_atomic(vaddr
);
1616 /* re-use the page, so don't erase
1619 skb_put(skb
, length
);
1621 skb_fill_page_desc(skb
, 0,
1622 buffer_info
->page
, 0,
1624 e1000_consume_page(buffer_info
, skb
,
1630 /* Receive Checksum Offload */
1631 e1000_rx_checksum(adapter
, staterr
, skb
);
1633 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1635 /* probably a little skewed due to removing CRC */
1636 total_rx_bytes
+= skb
->len
;
1639 /* eth type trans needs skb->data to point to something */
1640 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1641 e_err("pskb_may_pull failed.\n");
1642 dev_kfree_skb_irq(skb
);
1646 e1000_receive_skb(adapter
, netdev
, skb
, staterr
,
1647 rx_desc
->wb
.upper
.vlan
);
1650 rx_desc
->wb
.upper
.status_error
&= cpu_to_le32(~0xFF);
1652 /* return some buffers to hardware, one at a time is too slow */
1653 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1654 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1659 /* use prefetched values */
1661 buffer_info
= next_buffer
;
1663 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1665 rx_ring
->next_to_clean
= i
;
1667 cleaned_count
= e1000_desc_unused(rx_ring
);
1669 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1671 adapter
->total_rx_bytes
+= total_rx_bytes
;
1672 adapter
->total_rx_packets
+= total_rx_packets
;
1677 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1678 * @rx_ring: Rx descriptor ring
1680 static void e1000_clean_rx_ring(struct e1000_ring
*rx_ring
)
1682 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1683 struct e1000_buffer
*buffer_info
;
1684 struct e1000_ps_page
*ps_page
;
1685 struct pci_dev
*pdev
= adapter
->pdev
;
1688 /* Free all the Rx ring sk_buffs */
1689 for (i
= 0; i
< rx_ring
->count
; i
++) {
1690 buffer_info
= &rx_ring
->buffer_info
[i
];
1691 if (buffer_info
->dma
) {
1692 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1693 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1694 adapter
->rx_buffer_len
,
1696 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1697 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
,
1698 PAGE_SIZE
, DMA_FROM_DEVICE
);
1699 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1700 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1701 adapter
->rx_ps_bsize0
,
1703 buffer_info
->dma
= 0;
1706 if (buffer_info
->page
) {
1707 put_page(buffer_info
->page
);
1708 buffer_info
->page
= NULL
;
1711 if (buffer_info
->skb
) {
1712 dev_kfree_skb(buffer_info
->skb
);
1713 buffer_info
->skb
= NULL
;
1716 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1717 ps_page
= &buffer_info
->ps_pages
[j
];
1720 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1723 put_page(ps_page
->page
);
1724 ps_page
->page
= NULL
;
1728 /* there also may be some cached data from a chained receive */
1729 if (rx_ring
->rx_skb_top
) {
1730 dev_kfree_skb(rx_ring
->rx_skb_top
);
1731 rx_ring
->rx_skb_top
= NULL
;
1734 /* Zero out the descriptor ring */
1735 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1737 rx_ring
->next_to_clean
= 0;
1738 rx_ring
->next_to_use
= 0;
1739 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1741 writel(0, rx_ring
->head
);
1742 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
1743 e1000e_update_rdt_wa(rx_ring
, 0);
1745 writel(0, rx_ring
->tail
);
1748 static void e1000e_downshift_workaround(struct work_struct
*work
)
1750 struct e1000_adapter
*adapter
= container_of(work
,
1751 struct e1000_adapter
,
1754 if (test_bit(__E1000_DOWN
, &adapter
->state
))
1757 e1000e_gig_downshift_workaround_ich8lan(&adapter
->hw
);
1761 * e1000_intr_msi - Interrupt Handler
1762 * @irq: interrupt number
1763 * @data: pointer to a network interface device structure
1765 static irqreturn_t
e1000_intr_msi(int __always_unused irq
, void *data
)
1767 struct net_device
*netdev
= data
;
1768 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1769 struct e1000_hw
*hw
= &adapter
->hw
;
1770 u32 icr
= er32(ICR
);
1772 /* read ICR disables interrupts using IAM */
1773 if (icr
& E1000_ICR_LSC
) {
1774 hw
->mac
.get_link_status
= true;
1775 /* ICH8 workaround-- Call gig speed drop workaround on cable
1776 * disconnect (LSC) before accessing any PHY registers
1778 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1779 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1780 schedule_work(&adapter
->downshift_task
);
1782 /* 80003ES2LAN workaround-- For packet buffer work-around on
1783 * link down event; disable receives here in the ISR and reset
1784 * adapter in watchdog
1786 if (netif_carrier_ok(netdev
) &&
1787 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1788 /* disable receives */
1789 u32 rctl
= er32(RCTL
);
1791 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1792 adapter
->flags
|= FLAG_RESTART_NOW
;
1794 /* guard against interrupt when we're going down */
1795 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1796 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1799 /* Reset on uncorrectable ECC error */
1800 if ((icr
& E1000_ICR_ECCER
) && ((hw
->mac
.type
== e1000_pch_lpt
) ||
1801 (hw
->mac
.type
== e1000_pch_spt
))) {
1802 u32 pbeccsts
= er32(PBECCSTS
);
1804 adapter
->corr_errors
+=
1805 pbeccsts
& E1000_PBECCSTS_CORR_ERR_CNT_MASK
;
1806 adapter
->uncorr_errors
+=
1807 (pbeccsts
& E1000_PBECCSTS_UNCORR_ERR_CNT_MASK
) >>
1808 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT
;
1810 /* Do the reset outside of interrupt context */
1811 schedule_work(&adapter
->reset_task
);
1813 /* return immediately since reset is imminent */
1817 if (napi_schedule_prep(&adapter
->napi
)) {
1818 adapter
->total_tx_bytes
= 0;
1819 adapter
->total_tx_packets
= 0;
1820 adapter
->total_rx_bytes
= 0;
1821 adapter
->total_rx_packets
= 0;
1822 __napi_schedule(&adapter
->napi
);
1829 * e1000_intr - Interrupt Handler
1830 * @irq: interrupt number
1831 * @data: pointer to a network interface device structure
1833 static irqreturn_t
e1000_intr(int __always_unused irq
, void *data
)
1835 struct net_device
*netdev
= data
;
1836 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1837 struct e1000_hw
*hw
= &adapter
->hw
;
1838 u32 rctl
, icr
= er32(ICR
);
1840 if (!icr
|| test_bit(__E1000_DOWN
, &adapter
->state
))
1841 return IRQ_NONE
; /* Not our interrupt */
1843 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1844 * not set, then the adapter didn't send an interrupt
1846 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1849 /* Interrupt Auto-Mask...upon reading ICR,
1850 * interrupts are masked. No need for the
1854 if (icr
& E1000_ICR_LSC
) {
1855 hw
->mac
.get_link_status
= true;
1856 /* ICH8 workaround-- Call gig speed drop workaround on cable
1857 * disconnect (LSC) before accessing any PHY registers
1859 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1860 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1861 schedule_work(&adapter
->downshift_task
);
1863 /* 80003ES2LAN workaround--
1864 * For packet buffer work-around on link down event;
1865 * disable receives here in the ISR and
1866 * reset adapter in watchdog
1868 if (netif_carrier_ok(netdev
) &&
1869 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1870 /* disable receives */
1872 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1873 adapter
->flags
|= FLAG_RESTART_NOW
;
1875 /* guard against interrupt when we're going down */
1876 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1877 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1880 /* Reset on uncorrectable ECC error */
1881 if ((icr
& E1000_ICR_ECCER
) && ((hw
->mac
.type
== e1000_pch_lpt
) ||
1882 (hw
->mac
.type
== e1000_pch_spt
))) {
1883 u32 pbeccsts
= er32(PBECCSTS
);
1885 adapter
->corr_errors
+=
1886 pbeccsts
& E1000_PBECCSTS_CORR_ERR_CNT_MASK
;
1887 adapter
->uncorr_errors
+=
1888 (pbeccsts
& E1000_PBECCSTS_UNCORR_ERR_CNT_MASK
) >>
1889 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT
;
1891 /* Do the reset outside of interrupt context */
1892 schedule_work(&adapter
->reset_task
);
1894 /* return immediately since reset is imminent */
1898 if (napi_schedule_prep(&adapter
->napi
)) {
1899 adapter
->total_tx_bytes
= 0;
1900 adapter
->total_tx_packets
= 0;
1901 adapter
->total_rx_bytes
= 0;
1902 adapter
->total_rx_packets
= 0;
1903 __napi_schedule(&adapter
->napi
);
1909 static irqreturn_t
e1000_msix_other(int __always_unused irq
, void *data
)
1911 struct net_device
*netdev
= data
;
1912 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1913 struct e1000_hw
*hw
= &adapter
->hw
;
1914 u32 icr
= er32(ICR
);
1916 if (!(icr
& E1000_ICR_INT_ASSERTED
)) {
1917 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1918 ew32(IMS
, E1000_IMS_OTHER
);
1922 if (icr
& adapter
->eiac_mask
)
1923 ew32(ICS
, (icr
& adapter
->eiac_mask
));
1925 if (icr
& E1000_ICR_OTHER
) {
1926 if (!(icr
& E1000_ICR_LSC
))
1927 goto no_link_interrupt
;
1928 hw
->mac
.get_link_status
= true;
1929 /* guard against interrupt when we're going down */
1930 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1931 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1935 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1936 ew32(IMS
, E1000_IMS_LSC
| E1000_IMS_OTHER
);
1941 static irqreturn_t
e1000_intr_msix_tx(int __always_unused irq
, void *data
)
1943 struct net_device
*netdev
= data
;
1944 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1945 struct e1000_hw
*hw
= &adapter
->hw
;
1946 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1948 adapter
->total_tx_bytes
= 0;
1949 adapter
->total_tx_packets
= 0;
1951 if (!e1000_clean_tx_irq(tx_ring
))
1952 /* Ring was not completely cleaned, so fire another interrupt */
1953 ew32(ICS
, tx_ring
->ims_val
);
1958 static irqreturn_t
e1000_intr_msix_rx(int __always_unused irq
, void *data
)
1960 struct net_device
*netdev
= data
;
1961 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1962 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1964 /* Write the ITR value calculated at the end of the
1965 * previous interrupt.
1967 if (rx_ring
->set_itr
) {
1968 writel(1000000000 / (rx_ring
->itr_val
* 256),
1969 rx_ring
->itr_register
);
1970 rx_ring
->set_itr
= 0;
1973 if (napi_schedule_prep(&adapter
->napi
)) {
1974 adapter
->total_rx_bytes
= 0;
1975 adapter
->total_rx_packets
= 0;
1976 __napi_schedule(&adapter
->napi
);
1982 * e1000_configure_msix - Configure MSI-X hardware
1984 * e1000_configure_msix sets up the hardware to properly
1985 * generate MSI-X interrupts.
1987 static void e1000_configure_msix(struct e1000_adapter
*adapter
)
1989 struct e1000_hw
*hw
= &adapter
->hw
;
1990 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1991 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1993 u32 ctrl_ext
, ivar
= 0;
1995 adapter
->eiac_mask
= 0;
1997 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1998 if (hw
->mac
.type
== e1000_82574
) {
1999 u32 rfctl
= er32(RFCTL
);
2001 rfctl
|= E1000_RFCTL_ACK_DIS
;
2005 /* Configure Rx vector */
2006 rx_ring
->ims_val
= E1000_IMS_RXQ0
;
2007 adapter
->eiac_mask
|= rx_ring
->ims_val
;
2008 if (rx_ring
->itr_val
)
2009 writel(1000000000 / (rx_ring
->itr_val
* 256),
2010 rx_ring
->itr_register
);
2012 writel(1, rx_ring
->itr_register
);
2013 ivar
= E1000_IVAR_INT_ALLOC_VALID
| vector
;
2015 /* Configure Tx vector */
2016 tx_ring
->ims_val
= E1000_IMS_TXQ0
;
2018 if (tx_ring
->itr_val
)
2019 writel(1000000000 / (tx_ring
->itr_val
* 256),
2020 tx_ring
->itr_register
);
2022 writel(1, tx_ring
->itr_register
);
2023 adapter
->eiac_mask
|= tx_ring
->ims_val
;
2024 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 8);
2026 /* set vector for Other Causes, e.g. link changes */
2028 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 16);
2029 if (rx_ring
->itr_val
)
2030 writel(1000000000 / (rx_ring
->itr_val
* 256),
2031 hw
->hw_addr
+ E1000_EITR_82574(vector
));
2033 writel(1, hw
->hw_addr
+ E1000_EITR_82574(vector
));
2035 /* Cause Tx interrupts on every write back */
2040 /* enable MSI-X PBA support */
2041 ctrl_ext
= er32(CTRL_EXT
);
2042 ctrl_ext
|= E1000_CTRL_EXT_PBA_CLR
;
2044 /* Auto-Mask Other interrupts upon ICR read */
2045 ew32(IAM
, ~E1000_EIAC_MASK_82574
| E1000_IMS_OTHER
);
2046 ctrl_ext
|= E1000_CTRL_EXT_EIAME
;
2047 ew32(CTRL_EXT
, ctrl_ext
);
2051 void e1000e_reset_interrupt_capability(struct e1000_adapter
*adapter
)
2053 if (adapter
->msix_entries
) {
2054 pci_disable_msix(adapter
->pdev
);
2055 kfree(adapter
->msix_entries
);
2056 adapter
->msix_entries
= NULL
;
2057 } else if (adapter
->flags
& FLAG_MSI_ENABLED
) {
2058 pci_disable_msi(adapter
->pdev
);
2059 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
2064 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
2066 * Attempt to configure interrupts using the best available
2067 * capabilities of the hardware and kernel.
2069 void e1000e_set_interrupt_capability(struct e1000_adapter
*adapter
)
2074 switch (adapter
->int_mode
) {
2075 case E1000E_INT_MODE_MSIX
:
2076 if (adapter
->flags
& FLAG_HAS_MSIX
) {
2077 adapter
->num_vectors
= 3; /* RxQ0, TxQ0 and other */
2078 adapter
->msix_entries
= kcalloc(adapter
->num_vectors
,
2082 if (adapter
->msix_entries
) {
2083 struct e1000_adapter
*a
= adapter
;
2085 for (i
= 0; i
< adapter
->num_vectors
; i
++)
2086 adapter
->msix_entries
[i
].entry
= i
;
2088 err
= pci_enable_msix_range(a
->pdev
,
2095 /* MSI-X failed, so fall through and try MSI */
2096 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n");
2097 e1000e_reset_interrupt_capability(adapter
);
2099 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
2101 case E1000E_INT_MODE_MSI
:
2102 if (!pci_enable_msi(adapter
->pdev
)) {
2103 adapter
->flags
|= FLAG_MSI_ENABLED
;
2105 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
2106 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n");
2109 case E1000E_INT_MODE_LEGACY
:
2110 /* Don't do anything; this is the system default */
2114 /* store the number of vectors being used */
2115 adapter
->num_vectors
= 1;
2119 * e1000_request_msix - Initialize MSI-X interrupts
2121 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
2124 static int e1000_request_msix(struct e1000_adapter
*adapter
)
2126 struct net_device
*netdev
= adapter
->netdev
;
2127 int err
= 0, vector
= 0;
2129 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
2130 snprintf(adapter
->rx_ring
->name
,
2131 sizeof(adapter
->rx_ring
->name
) - 1,
2132 "%s-rx-0", netdev
->name
);
2134 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
2135 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2136 e1000_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
2140 adapter
->rx_ring
->itr_register
= adapter
->hw
.hw_addr
+
2141 E1000_EITR_82574(vector
);
2142 adapter
->rx_ring
->itr_val
= adapter
->itr
;
2145 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
2146 snprintf(adapter
->tx_ring
->name
,
2147 sizeof(adapter
->tx_ring
->name
) - 1,
2148 "%s-tx-0", netdev
->name
);
2150 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
2151 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2152 e1000_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
2156 adapter
->tx_ring
->itr_register
= adapter
->hw
.hw_addr
+
2157 E1000_EITR_82574(vector
);
2158 adapter
->tx_ring
->itr_val
= adapter
->itr
;
2161 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2162 e1000_msix_other
, 0, netdev
->name
, netdev
);
2166 e1000_configure_msix(adapter
);
2172 * e1000_request_irq - initialize interrupts
2174 * Attempts to configure interrupts using the best available
2175 * capabilities of the hardware and kernel.
2177 static int e1000_request_irq(struct e1000_adapter
*adapter
)
2179 struct net_device
*netdev
= adapter
->netdev
;
2182 if (adapter
->msix_entries
) {
2183 err
= e1000_request_msix(adapter
);
2186 /* fall back to MSI */
2187 e1000e_reset_interrupt_capability(adapter
);
2188 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
2189 e1000e_set_interrupt_capability(adapter
);
2191 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
2192 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi
, 0,
2193 netdev
->name
, netdev
);
2197 /* fall back to legacy interrupt */
2198 e1000e_reset_interrupt_capability(adapter
);
2199 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
2202 err
= request_irq(adapter
->pdev
->irq
, e1000_intr
, IRQF_SHARED
,
2203 netdev
->name
, netdev
);
2205 e_err("Unable to allocate interrupt, Error: %d\n", err
);
2210 static void e1000_free_irq(struct e1000_adapter
*adapter
)
2212 struct net_device
*netdev
= adapter
->netdev
;
2214 if (adapter
->msix_entries
) {
2217 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2220 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2223 /* Other Causes interrupt vector */
2224 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2228 free_irq(adapter
->pdev
->irq
, netdev
);
2232 * e1000_irq_disable - Mask off interrupt generation on the NIC
2234 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
2236 struct e1000_hw
*hw
= &adapter
->hw
;
2239 if (adapter
->msix_entries
)
2240 ew32(EIAC_82574
, 0);
2243 if (adapter
->msix_entries
) {
2246 for (i
= 0; i
< adapter
->num_vectors
; i
++)
2247 synchronize_irq(adapter
->msix_entries
[i
].vector
);
2249 synchronize_irq(adapter
->pdev
->irq
);
2254 * e1000_irq_enable - Enable default interrupt generation settings
2256 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
2258 struct e1000_hw
*hw
= &adapter
->hw
;
2260 if (adapter
->msix_entries
) {
2261 ew32(EIAC_82574
, adapter
->eiac_mask
& E1000_EIAC_MASK_82574
);
2262 ew32(IMS
, adapter
->eiac_mask
| E1000_IMS_OTHER
| E1000_IMS_LSC
);
2263 } else if ((hw
->mac
.type
== e1000_pch_lpt
) ||
2264 (hw
->mac
.type
== e1000_pch_spt
)) {
2265 ew32(IMS
, IMS_ENABLE_MASK
| E1000_IMS_ECCER
);
2267 ew32(IMS
, IMS_ENABLE_MASK
);
2273 * e1000e_get_hw_control - get control of the h/w from f/w
2274 * @adapter: address of board private structure
2276 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2277 * For ASF and Pass Through versions of f/w this means that
2278 * the driver is loaded. For AMT version (only with 82573)
2279 * of the f/w this means that the network i/f is open.
2281 void e1000e_get_hw_control(struct e1000_adapter
*adapter
)
2283 struct e1000_hw
*hw
= &adapter
->hw
;
2287 /* Let firmware know the driver has taken over */
2288 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2290 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
2291 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2292 ctrl_ext
= er32(CTRL_EXT
);
2293 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
2298 * e1000e_release_hw_control - release control of the h/w to f/w
2299 * @adapter: address of board private structure
2301 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2302 * For ASF and Pass Through versions of f/w this means that the
2303 * driver is no longer loaded. For AMT version (only with 82573) i
2304 * of the f/w this means that the network i/f is closed.
2307 void e1000e_release_hw_control(struct e1000_adapter
*adapter
)
2309 struct e1000_hw
*hw
= &adapter
->hw
;
2313 /* Let firmware taken over control of h/w */
2314 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2316 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
2317 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2318 ctrl_ext
= er32(CTRL_EXT
);
2319 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
2324 * e1000_alloc_ring_dma - allocate memory for a ring structure
2326 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
2327 struct e1000_ring
*ring
)
2329 struct pci_dev
*pdev
= adapter
->pdev
;
2331 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
2340 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
2341 * @tx_ring: Tx descriptor ring
2343 * Return 0 on success, negative on failure
2345 int e1000e_setup_tx_resources(struct e1000_ring
*tx_ring
)
2347 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2348 int err
= -ENOMEM
, size
;
2350 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2351 tx_ring
->buffer_info
= vzalloc(size
);
2352 if (!tx_ring
->buffer_info
)
2355 /* round up to nearest 4K */
2356 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2357 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
2359 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
2363 tx_ring
->next_to_use
= 0;
2364 tx_ring
->next_to_clean
= 0;
2368 vfree(tx_ring
->buffer_info
);
2369 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2374 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
2375 * @rx_ring: Rx descriptor ring
2377 * Returns 0 on success, negative on failure
2379 int e1000e_setup_rx_resources(struct e1000_ring
*rx_ring
)
2381 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
2382 struct e1000_buffer
*buffer_info
;
2383 int i
, size
, desc_len
, err
= -ENOMEM
;
2385 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2386 rx_ring
->buffer_info
= vzalloc(size
);
2387 if (!rx_ring
->buffer_info
)
2390 for (i
= 0; i
< rx_ring
->count
; i
++) {
2391 buffer_info
= &rx_ring
->buffer_info
[i
];
2392 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
2393 sizeof(struct e1000_ps_page
),
2395 if (!buffer_info
->ps_pages
)
2399 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
2401 /* Round up to nearest 4K */
2402 rx_ring
->size
= rx_ring
->count
* desc_len
;
2403 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
2405 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
2409 rx_ring
->next_to_clean
= 0;
2410 rx_ring
->next_to_use
= 0;
2411 rx_ring
->rx_skb_top
= NULL
;
2416 for (i
= 0; i
< rx_ring
->count
; i
++) {
2417 buffer_info
= &rx_ring
->buffer_info
[i
];
2418 kfree(buffer_info
->ps_pages
);
2421 vfree(rx_ring
->buffer_info
);
2422 e_err("Unable to allocate memory for the receive descriptor ring\n");
2427 * e1000_clean_tx_ring - Free Tx Buffers
2428 * @tx_ring: Tx descriptor ring
2430 static void e1000_clean_tx_ring(struct e1000_ring
*tx_ring
)
2432 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2433 struct e1000_buffer
*buffer_info
;
2437 for (i
= 0; i
< tx_ring
->count
; i
++) {
2438 buffer_info
= &tx_ring
->buffer_info
[i
];
2439 e1000_put_txbuf(tx_ring
, buffer_info
);
2442 netdev_reset_queue(adapter
->netdev
);
2443 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2444 memset(tx_ring
->buffer_info
, 0, size
);
2446 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2448 tx_ring
->next_to_use
= 0;
2449 tx_ring
->next_to_clean
= 0;
2451 writel(0, tx_ring
->head
);
2452 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
2453 e1000e_update_tdt_wa(tx_ring
, 0);
2455 writel(0, tx_ring
->tail
);
2459 * e1000e_free_tx_resources - Free Tx Resources per Queue
2460 * @tx_ring: Tx descriptor ring
2462 * Free all transmit software resources
2464 void e1000e_free_tx_resources(struct e1000_ring
*tx_ring
)
2466 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2467 struct pci_dev
*pdev
= adapter
->pdev
;
2469 e1000_clean_tx_ring(tx_ring
);
2471 vfree(tx_ring
->buffer_info
);
2472 tx_ring
->buffer_info
= NULL
;
2474 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
2476 tx_ring
->desc
= NULL
;
2480 * e1000e_free_rx_resources - Free Rx Resources
2481 * @rx_ring: Rx descriptor ring
2483 * Free all receive software resources
2485 void e1000e_free_rx_resources(struct e1000_ring
*rx_ring
)
2487 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
2488 struct pci_dev
*pdev
= adapter
->pdev
;
2491 e1000_clean_rx_ring(rx_ring
);
2493 for (i
= 0; i
< rx_ring
->count
; i
++)
2494 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
2496 vfree(rx_ring
->buffer_info
);
2497 rx_ring
->buffer_info
= NULL
;
2499 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
2501 rx_ring
->desc
= NULL
;
2505 * e1000_update_itr - update the dynamic ITR value based on statistics
2506 * @adapter: pointer to adapter
2507 * @itr_setting: current adapter->itr
2508 * @packets: the number of packets during this measurement interval
2509 * @bytes: the number of bytes during this measurement interval
2511 * Stores a new ITR value based on packets and byte
2512 * counts during the last interrupt. The advantage of per interrupt
2513 * computation is faster updates and more accurate ITR for the current
2514 * traffic pattern. Constants in this function were computed
2515 * based on theoretical maximum wire speed and thresholds were set based
2516 * on testing data as well as attempting to minimize response time
2517 * while increasing bulk throughput. This functionality is controlled
2518 * by the InterruptThrottleRate module parameter.
2520 static unsigned int e1000_update_itr(u16 itr_setting
, int packets
, int bytes
)
2522 unsigned int retval
= itr_setting
;
2527 switch (itr_setting
) {
2528 case lowest_latency
:
2529 /* handle TSO and jumbo frames */
2530 if (bytes
/ packets
> 8000)
2531 retval
= bulk_latency
;
2532 else if ((packets
< 5) && (bytes
> 512))
2533 retval
= low_latency
;
2535 case low_latency
: /* 50 usec aka 20000 ints/s */
2536 if (bytes
> 10000) {
2537 /* this if handles the TSO accounting */
2538 if (bytes
/ packets
> 8000)
2539 retval
= bulk_latency
;
2540 else if ((packets
< 10) || ((bytes
/ packets
) > 1200))
2541 retval
= bulk_latency
;
2542 else if ((packets
> 35))
2543 retval
= lowest_latency
;
2544 } else if (bytes
/ packets
> 2000) {
2545 retval
= bulk_latency
;
2546 } else if (packets
<= 2 && bytes
< 512) {
2547 retval
= lowest_latency
;
2550 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2551 if (bytes
> 25000) {
2553 retval
= low_latency
;
2554 } else if (bytes
< 6000) {
2555 retval
= low_latency
;
2563 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2566 u32 new_itr
= adapter
->itr
;
2568 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2569 if (adapter
->link_speed
!= SPEED_1000
) {
2575 if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
2580 adapter
->tx_itr
= e1000_update_itr(adapter
->tx_itr
,
2581 adapter
->total_tx_packets
,
2582 adapter
->total_tx_bytes
);
2583 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2584 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
2585 adapter
->tx_itr
= low_latency
;
2587 adapter
->rx_itr
= e1000_update_itr(adapter
->rx_itr
,
2588 adapter
->total_rx_packets
,
2589 adapter
->total_rx_bytes
);
2590 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2591 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2592 adapter
->rx_itr
= low_latency
;
2594 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2596 /* counts and packets in update_itr are dependent on these numbers */
2597 switch (current_itr
) {
2598 case lowest_latency
:
2602 new_itr
= 20000; /* aka hwitr = ~200 */
2612 if (new_itr
!= adapter
->itr
) {
2613 /* this attempts to bias the interrupt rate towards Bulk
2614 * by adding intermediate steps when interrupt rate is
2617 new_itr
= new_itr
> adapter
->itr
?
2618 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) : new_itr
;
2619 adapter
->itr
= new_itr
;
2620 adapter
->rx_ring
->itr_val
= new_itr
;
2621 if (adapter
->msix_entries
)
2622 adapter
->rx_ring
->set_itr
= 1;
2624 e1000e_write_itr(adapter
, new_itr
);
2629 * e1000e_write_itr - write the ITR value to the appropriate registers
2630 * @adapter: address of board private structure
2631 * @itr: new ITR value to program
2633 * e1000e_write_itr determines if the adapter is in MSI-X mode
2634 * and, if so, writes the EITR registers with the ITR value.
2635 * Otherwise, it writes the ITR value into the ITR register.
2637 void e1000e_write_itr(struct e1000_adapter
*adapter
, u32 itr
)
2639 struct e1000_hw
*hw
= &adapter
->hw
;
2640 u32 new_itr
= itr
? 1000000000 / (itr
* 256) : 0;
2642 if (adapter
->msix_entries
) {
2645 for (vector
= 0; vector
< adapter
->num_vectors
; vector
++)
2646 writel(new_itr
, hw
->hw_addr
+ E1000_EITR_82574(vector
));
2653 * e1000_alloc_queues - Allocate memory for all rings
2654 * @adapter: board private structure to initialize
2656 static int e1000_alloc_queues(struct e1000_adapter
*adapter
)
2658 int size
= sizeof(struct e1000_ring
);
2660 adapter
->tx_ring
= kzalloc(size
, GFP_KERNEL
);
2661 if (!adapter
->tx_ring
)
2663 adapter
->tx_ring
->count
= adapter
->tx_ring_count
;
2664 adapter
->tx_ring
->adapter
= adapter
;
2666 adapter
->rx_ring
= kzalloc(size
, GFP_KERNEL
);
2667 if (!adapter
->rx_ring
)
2669 adapter
->rx_ring
->count
= adapter
->rx_ring_count
;
2670 adapter
->rx_ring
->adapter
= adapter
;
2674 e_err("Unable to allocate memory for queues\n");
2675 kfree(adapter
->rx_ring
);
2676 kfree(adapter
->tx_ring
);
2681 * e1000e_poll - NAPI Rx polling callback
2682 * @napi: struct associated with this polling callback
2683 * @weight: number of packets driver is allowed to process this poll
2685 static int e1000e_poll(struct napi_struct
*napi
, int weight
)
2687 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
,
2689 struct e1000_hw
*hw
= &adapter
->hw
;
2690 struct net_device
*poll_dev
= adapter
->netdev
;
2691 int tx_cleaned
= 1, work_done
= 0;
2693 adapter
= netdev_priv(poll_dev
);
2695 if (!adapter
->msix_entries
||
2696 (adapter
->rx_ring
->ims_val
& adapter
->tx_ring
->ims_val
))
2697 tx_cleaned
= e1000_clean_tx_irq(adapter
->tx_ring
);
2699 adapter
->clean_rx(adapter
->rx_ring
, &work_done
, weight
);
2704 /* If weight not fully consumed, exit the polling mode */
2705 if (work_done
< weight
) {
2706 if (adapter
->itr_setting
& 3)
2707 e1000_set_itr(adapter
);
2708 napi_complete(napi
);
2709 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
2710 if (adapter
->msix_entries
)
2711 ew32(IMS
, adapter
->rx_ring
->ims_val
);
2713 e1000_irq_enable(adapter
);
2720 static int e1000_vlan_rx_add_vid(struct net_device
*netdev
,
2721 __always_unused __be16 proto
, u16 vid
)
2723 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2724 struct e1000_hw
*hw
= &adapter
->hw
;
2727 /* don't update vlan cookie if already programmed */
2728 if ((adapter
->hw
.mng_cookie
.status
&
2729 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2730 (vid
== adapter
->mng_vlan_id
))
2733 /* add VID to filter table */
2734 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2735 index
= (vid
>> 5) & 0x7F;
2736 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2737 vfta
|= (1 << (vid
& 0x1F));
2738 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2741 set_bit(vid
, adapter
->active_vlans
);
2746 static int e1000_vlan_rx_kill_vid(struct net_device
*netdev
,
2747 __always_unused __be16 proto
, u16 vid
)
2749 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2750 struct e1000_hw
*hw
= &adapter
->hw
;
2753 if ((adapter
->hw
.mng_cookie
.status
&
2754 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2755 (vid
== adapter
->mng_vlan_id
)) {
2756 /* release control to f/w */
2757 e1000e_release_hw_control(adapter
);
2761 /* remove VID from filter table */
2762 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2763 index
= (vid
>> 5) & 0x7F;
2764 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2765 vfta
&= ~(1 << (vid
& 0x1F));
2766 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2769 clear_bit(vid
, adapter
->active_vlans
);
2775 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
2776 * @adapter: board private structure to initialize
2778 static void e1000e_vlan_filter_disable(struct e1000_adapter
*adapter
)
2780 struct net_device
*netdev
= adapter
->netdev
;
2781 struct e1000_hw
*hw
= &adapter
->hw
;
2784 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2785 /* disable VLAN receive filtering */
2787 rctl
&= ~(E1000_RCTL_VFE
| E1000_RCTL_CFIEN
);
2790 if (adapter
->mng_vlan_id
!= (u16
)E1000_MNG_VLAN_NONE
) {
2791 e1000_vlan_rx_kill_vid(netdev
, htons(ETH_P_8021Q
),
2792 adapter
->mng_vlan_id
);
2793 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2799 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
2800 * @adapter: board private structure to initialize
2802 static void e1000e_vlan_filter_enable(struct e1000_adapter
*adapter
)
2804 struct e1000_hw
*hw
= &adapter
->hw
;
2807 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2808 /* enable VLAN receive filtering */
2810 rctl
|= E1000_RCTL_VFE
;
2811 rctl
&= ~E1000_RCTL_CFIEN
;
2817 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping
2818 * @adapter: board private structure to initialize
2820 static void e1000e_vlan_strip_disable(struct e1000_adapter
*adapter
)
2822 struct e1000_hw
*hw
= &adapter
->hw
;
2825 /* disable VLAN tag insert/strip */
2827 ctrl
&= ~E1000_CTRL_VME
;
2832 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
2833 * @adapter: board private structure to initialize
2835 static void e1000e_vlan_strip_enable(struct e1000_adapter
*adapter
)
2837 struct e1000_hw
*hw
= &adapter
->hw
;
2840 /* enable VLAN tag insert/strip */
2842 ctrl
|= E1000_CTRL_VME
;
2846 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
2848 struct net_device
*netdev
= adapter
->netdev
;
2849 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
2850 u16 old_vid
= adapter
->mng_vlan_id
;
2852 if (adapter
->hw
.mng_cookie
.status
& E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
2853 e1000_vlan_rx_add_vid(netdev
, htons(ETH_P_8021Q
), vid
);
2854 adapter
->mng_vlan_id
= vid
;
2857 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) && (vid
!= old_vid
))
2858 e1000_vlan_rx_kill_vid(netdev
, htons(ETH_P_8021Q
), old_vid
);
2861 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
2865 e1000_vlan_rx_add_vid(adapter
->netdev
, htons(ETH_P_8021Q
), 0);
2867 for_each_set_bit(vid
, adapter
->active_vlans
, VLAN_N_VID
)
2868 e1000_vlan_rx_add_vid(adapter
->netdev
, htons(ETH_P_8021Q
), vid
);
2871 static void e1000_init_manageability_pt(struct e1000_adapter
*adapter
)
2873 struct e1000_hw
*hw
= &adapter
->hw
;
2874 u32 manc
, manc2h
, mdef
, i
, j
;
2876 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
2881 /* enable receiving management packets to the host. this will probably
2882 * generate destination unreachable messages from the host OS, but
2883 * the packets will be handled on SMBUS
2885 manc
|= E1000_MANC_EN_MNG2HOST
;
2886 manc2h
= er32(MANC2H
);
2888 switch (hw
->mac
.type
) {
2890 manc2h
|= (E1000_MANC2H_PORT_623
| E1000_MANC2H_PORT_664
);
2894 /* Check if IPMI pass-through decision filter already exists;
2897 for (i
= 0, j
= 0; i
< 8; i
++) {
2898 mdef
= er32(MDEF(i
));
2900 /* Ignore filters with anything other than IPMI ports */
2901 if (mdef
& ~(E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2904 /* Enable this decision filter in MANC2H */
2911 if (j
== (E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2914 /* Create new decision filter in an empty filter */
2915 for (i
= 0, j
= 0; i
< 8; i
++)
2916 if (er32(MDEF(i
)) == 0) {
2917 ew32(MDEF(i
), (E1000_MDEF_PORT_623
|
2918 E1000_MDEF_PORT_664
));
2925 e_warn("Unable to create IPMI pass-through filter\n");
2929 ew32(MANC2H
, manc2h
);
2934 * e1000_configure_tx - Configure Transmit Unit after Reset
2935 * @adapter: board private structure
2937 * Configure the Tx unit of the MAC after a reset.
2939 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
2941 struct e1000_hw
*hw
= &adapter
->hw
;
2942 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2944 u32 tdlen
, tctl
, tarc
;
2946 /* Setup the HW Tx Head and Tail descriptor pointers */
2947 tdba
= tx_ring
->dma
;
2948 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2949 ew32(TDBAL(0), (tdba
& DMA_BIT_MASK(32)));
2950 ew32(TDBAH(0), (tdba
>> 32));
2951 ew32(TDLEN(0), tdlen
);
2954 tx_ring
->head
= adapter
->hw
.hw_addr
+ E1000_TDH(0);
2955 tx_ring
->tail
= adapter
->hw
.hw_addr
+ E1000_TDT(0);
2957 /* Set the Tx Interrupt Delay register */
2958 ew32(TIDV
, adapter
->tx_int_delay
);
2959 /* Tx irq moderation */
2960 ew32(TADV
, adapter
->tx_abs_int_delay
);
2962 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
2963 u32 txdctl
= er32(TXDCTL(0));
2965 txdctl
&= ~(E1000_TXDCTL_PTHRESH
| E1000_TXDCTL_HTHRESH
|
2966 E1000_TXDCTL_WTHRESH
);
2967 /* set up some performance related parameters to encourage the
2968 * hardware to use the bus more efficiently in bursts, depends
2969 * on the tx_int_delay to be enabled,
2970 * wthresh = 1 ==> burst write is disabled to avoid Tx stalls
2971 * hthresh = 1 ==> prefetch when one or more available
2972 * pthresh = 0x1f ==> prefetch if internal cache 31 or less
2973 * BEWARE: this seems to work but should be considered first if
2974 * there are Tx hangs or other Tx related bugs
2976 txdctl
|= E1000_TXDCTL_DMA_BURST_ENABLE
;
2977 ew32(TXDCTL(0), txdctl
);
2979 /* erratum work around: set txdctl the same for both queues */
2980 ew32(TXDCTL(1), er32(TXDCTL(0)));
2982 /* Program the Transmit Control Register */
2984 tctl
&= ~E1000_TCTL_CT
;
2985 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
2986 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
2988 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
2989 tarc
= er32(TARC(0));
2990 /* set the speed mode bit, we'll clear it if we're not at
2991 * gigabit link later
2993 #define SPEED_MODE_BIT (1 << 21)
2994 tarc
|= SPEED_MODE_BIT
;
2995 ew32(TARC(0), tarc
);
2998 /* errata: program both queues to unweighted RR */
2999 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
3000 tarc
= er32(TARC(0));
3002 ew32(TARC(0), tarc
);
3003 tarc
= er32(TARC(1));
3005 ew32(TARC(1), tarc
);
3008 /* Setup Transmit Descriptor Settings for eop descriptor */
3009 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
3011 /* only set IDE if we are delaying interrupts using the timers */
3012 if (adapter
->tx_int_delay
)
3013 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
3015 /* enable Report Status bit */
3016 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
3020 hw
->mac
.ops
.config_collision_dist(hw
);
3022 /* SPT Si errata workaround to avoid data corruption */
3023 if (hw
->mac
.type
== e1000_pch_spt
) {
3026 reg_val
= er32(IOSFPC
);
3027 reg_val
|= E1000_RCTL_RDMTS_HEX
;
3028 ew32(IOSFPC
, reg_val
);
3030 reg_val
= er32(TARC(0));
3031 reg_val
|= E1000_TARC0_CB_MULTIQ_3_REQ
;
3032 ew32(TARC(0), reg_val
);
3037 * e1000_setup_rctl - configure the receive control registers
3038 * @adapter: Board private structure
3040 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
3041 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
3042 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
3044 struct e1000_hw
*hw
= &adapter
->hw
;
3048 /* Workaround Si errata on PCHx - configure jumbo frame flow.
3049 * If jumbo frames not set, program related MAC/PHY registers
3052 if (hw
->mac
.type
>= e1000_pch2lan
) {
3055 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
)
3056 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, true);
3058 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, false);
3061 e_dbg("failed to enable|disable jumbo frame workaround mode\n");
3064 /* Program MC offset vector base */
3066 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
3067 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
3068 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
3069 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
3071 /* Do not Store bad packets */
3072 rctl
&= ~E1000_RCTL_SBP
;
3074 /* Enable Long Packet receive */
3075 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
3076 rctl
&= ~E1000_RCTL_LPE
;
3078 rctl
|= E1000_RCTL_LPE
;
3080 /* Some systems expect that the CRC is included in SMBUS traffic. The
3081 * hardware strips the CRC before sending to both SMBUS (BMC) and to
3082 * host memory when this is enabled
3084 if (adapter
->flags2
& FLAG2_CRC_STRIPPING
)
3085 rctl
|= E1000_RCTL_SECRC
;
3087 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
3088 if ((hw
->phy
.type
== e1000_phy_82577
) && (rctl
& E1000_RCTL_LPE
)) {
3091 e1e_rphy(hw
, PHY_REG(770, 26), &phy_data
);
3093 phy_data
|= (1 << 2);
3094 e1e_wphy(hw
, PHY_REG(770, 26), phy_data
);
3096 e1e_rphy(hw
, 22, &phy_data
);
3098 phy_data
|= (1 << 14);
3099 e1e_wphy(hw
, 0x10, 0x2823);
3100 e1e_wphy(hw
, 0x11, 0x0003);
3101 e1e_wphy(hw
, 22, phy_data
);
3104 /* Setup buffer sizes */
3105 rctl
&= ~E1000_RCTL_SZ_4096
;
3106 rctl
|= E1000_RCTL_BSEX
;
3107 switch (adapter
->rx_buffer_len
) {
3110 rctl
|= E1000_RCTL_SZ_2048
;
3111 rctl
&= ~E1000_RCTL_BSEX
;
3114 rctl
|= E1000_RCTL_SZ_4096
;
3117 rctl
|= E1000_RCTL_SZ_8192
;
3120 rctl
|= E1000_RCTL_SZ_16384
;
3124 /* Enable Extended Status in all Receive Descriptors */
3125 rfctl
= er32(RFCTL
);
3126 rfctl
|= E1000_RFCTL_EXTEN
;
3129 /* 82571 and greater support packet-split where the protocol
3130 * header is placed in skb->data and the packet data is
3131 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
3132 * In the case of a non-split, skb->data is linearly filled,
3133 * followed by the page buffers. Therefore, skb->data is
3134 * sized to hold the largest protocol header.
3136 * allocations using alloc_page take too long for regular MTU
3137 * so only enable packet split for jumbo frames
3139 * Using pages when the page size is greater than 16k wastes
3140 * a lot of memory, since we allocate 3 pages at all times
3143 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
3144 if ((pages
<= 3) && (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
3145 adapter
->rx_ps_pages
= pages
;
3147 adapter
->rx_ps_pages
= 0;
3149 if (adapter
->rx_ps_pages
) {
3152 /* Enable Packet split descriptors */
3153 rctl
|= E1000_RCTL_DTYP_PS
;
3155 psrctl
|= adapter
->rx_ps_bsize0
>> E1000_PSRCTL_BSIZE0_SHIFT
;
3157 switch (adapter
->rx_ps_pages
) {
3159 psrctl
|= PAGE_SIZE
<< E1000_PSRCTL_BSIZE3_SHIFT
;
3162 psrctl
|= PAGE_SIZE
<< E1000_PSRCTL_BSIZE2_SHIFT
;
3165 psrctl
|= PAGE_SIZE
>> E1000_PSRCTL_BSIZE1_SHIFT
;
3169 ew32(PSRCTL
, psrctl
);
3172 /* This is useful for sniffing bad packets. */
3173 if (adapter
->netdev
->features
& NETIF_F_RXALL
) {
3174 /* UPE and MPE will be handled by normal PROMISC logic
3175 * in e1000e_set_rx_mode
3177 rctl
|= (E1000_RCTL_SBP
| /* Receive bad packets */
3178 E1000_RCTL_BAM
| /* RX All Bcast Pkts */
3179 E1000_RCTL_PMCF
); /* RX All MAC Ctrl Pkts */
3181 rctl
&= ~(E1000_RCTL_VFE
| /* Disable VLAN filter */
3182 E1000_RCTL_DPF
| /* Allow filtered pause */
3183 E1000_RCTL_CFIEN
); /* Dis VLAN CFIEN Filter */
3184 /* Do not mess with E1000_CTRL_VME, it affects transmit as well,
3185 * and that breaks VLANs.
3190 /* just started the receive unit, no need to restart */
3191 adapter
->flags
&= ~FLAG_RESTART_NOW
;
3195 * e1000_configure_rx - Configure Receive Unit after Reset
3196 * @adapter: board private structure
3198 * Configure the Rx unit of the MAC after a reset.
3200 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
3202 struct e1000_hw
*hw
= &adapter
->hw
;
3203 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
3205 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
3207 if (adapter
->rx_ps_pages
) {
3208 /* this is a 32 byte descriptor */
3209 rdlen
= rx_ring
->count
*
3210 sizeof(union e1000_rx_desc_packet_split
);
3211 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
3212 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
3213 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3214 rdlen
= rx_ring
->count
* sizeof(union e1000_rx_desc_extended
);
3215 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
3216 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
3218 rdlen
= rx_ring
->count
* sizeof(union e1000_rx_desc_extended
);
3219 adapter
->clean_rx
= e1000_clean_rx_irq
;
3220 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
3223 /* disable receives while setting up the descriptors */
3225 if (!(adapter
->flags2
& FLAG2_NO_DISABLE_RX
))
3226 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3228 usleep_range(10000, 20000);
3230 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
3231 /* set the writeback threshold (only takes effect if the RDTR
3232 * is set). set GRAN=1 and write back up to 0x4 worth, and
3233 * enable prefetching of 0x20 Rx descriptors
3239 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE
);
3240 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE
);
3242 /* override the delay timers for enabling bursting, only if
3243 * the value was not set by the user via module options
3245 if (adapter
->rx_int_delay
== DEFAULT_RDTR
)
3246 adapter
->rx_int_delay
= BURST_RDTR
;
3247 if (adapter
->rx_abs_int_delay
== DEFAULT_RADV
)
3248 adapter
->rx_abs_int_delay
= BURST_RADV
;
3251 /* set the Receive Delay Timer Register */
3252 ew32(RDTR
, adapter
->rx_int_delay
);
3254 /* irq moderation */
3255 ew32(RADV
, adapter
->rx_abs_int_delay
);
3256 if ((adapter
->itr_setting
!= 0) && (adapter
->itr
!= 0))
3257 e1000e_write_itr(adapter
, adapter
->itr
);
3259 ctrl_ext
= er32(CTRL_EXT
);
3260 /* Auto-Mask interrupts upon ICR access */
3261 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
3262 ew32(IAM
, 0xffffffff);
3263 ew32(CTRL_EXT
, ctrl_ext
);
3266 /* Setup the HW Rx Head and Tail Descriptor Pointers and
3267 * the Base and Length of the Rx Descriptor Ring
3269 rdba
= rx_ring
->dma
;
3270 ew32(RDBAL(0), (rdba
& DMA_BIT_MASK(32)));
3271 ew32(RDBAH(0), (rdba
>> 32));
3272 ew32(RDLEN(0), rdlen
);
3275 rx_ring
->head
= adapter
->hw
.hw_addr
+ E1000_RDH(0);
3276 rx_ring
->tail
= adapter
->hw
.hw_addr
+ E1000_RDT(0);
3278 /* Enable Receive Checksum Offload for TCP and UDP */
3279 rxcsum
= er32(RXCSUM
);
3280 if (adapter
->netdev
->features
& NETIF_F_RXCSUM
)
3281 rxcsum
|= E1000_RXCSUM_TUOFL
;
3283 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
3284 ew32(RXCSUM
, rxcsum
);
3286 /* With jumbo frames, excessive C-state transition latencies result
3287 * in dropped transactions.
3289 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3291 ((er32(PBA
) & E1000_PBA_RXA_MASK
) * 1024 -
3292 adapter
->max_frame_size
) * 8 / 1000;
3294 if (adapter
->flags
& FLAG_IS_ICH
) {
3295 u32 rxdctl
= er32(RXDCTL(0));
3297 ew32(RXDCTL(0), rxdctl
| 0x3);
3300 pm_qos_update_request(&adapter
->pm_qos_req
, lat
);
3302 pm_qos_update_request(&adapter
->pm_qos_req
,
3303 PM_QOS_DEFAULT_VALUE
);
3306 /* Enable Receives */
3311 * e1000e_write_mc_addr_list - write multicast addresses to MTA
3312 * @netdev: network interface device structure
3314 * Writes multicast address list to the MTA hash table.
3315 * Returns: -ENOMEM on failure
3316 * 0 on no addresses written
3317 * X on writing X addresses to MTA
3319 static int e1000e_write_mc_addr_list(struct net_device
*netdev
)
3321 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3322 struct e1000_hw
*hw
= &adapter
->hw
;
3323 struct netdev_hw_addr
*ha
;
3327 if (netdev_mc_empty(netdev
)) {
3328 /* nothing to program, so clear mc list */
3329 hw
->mac
.ops
.update_mc_addr_list(hw
, NULL
, 0);
3333 mta_list
= kzalloc(netdev_mc_count(netdev
) * ETH_ALEN
, GFP_ATOMIC
);
3337 /* update_mc_addr_list expects a packed array of only addresses. */
3339 netdev_for_each_mc_addr(ha
, netdev
)
3340 memcpy(mta_list
+ (i
++ * ETH_ALEN
), ha
->addr
, ETH_ALEN
);
3342 hw
->mac
.ops
.update_mc_addr_list(hw
, mta_list
, i
);
3345 return netdev_mc_count(netdev
);
3349 * e1000e_write_uc_addr_list - write unicast addresses to RAR table
3350 * @netdev: network interface device structure
3352 * Writes unicast address list to the RAR table.
3353 * Returns: -ENOMEM on failure/insufficient address space
3354 * 0 on no addresses written
3355 * X on writing X addresses to the RAR table
3357 static int e1000e_write_uc_addr_list(struct net_device
*netdev
)
3359 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3360 struct e1000_hw
*hw
= &adapter
->hw
;
3361 unsigned int rar_entries
;
3364 rar_entries
= hw
->mac
.ops
.rar_get_count(hw
);
3366 /* save a rar entry for our hardware address */
3369 /* save a rar entry for the LAA workaround */
3370 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
)
3373 /* return ENOMEM indicating insufficient memory for addresses */
3374 if (netdev_uc_count(netdev
) > rar_entries
)
3377 if (!netdev_uc_empty(netdev
) && rar_entries
) {
3378 struct netdev_hw_addr
*ha
;
3380 /* write the addresses in reverse order to avoid write
3383 netdev_for_each_uc_addr(ha
, netdev
) {
3388 rval
= hw
->mac
.ops
.rar_set(hw
, ha
->addr
, rar_entries
--);
3395 /* zero out the remaining RAR entries not used above */
3396 for (; rar_entries
> 0; rar_entries
--) {
3397 ew32(RAH(rar_entries
), 0);
3398 ew32(RAL(rar_entries
), 0);
3406 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set
3407 * @netdev: network interface device structure
3409 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast
3410 * address list or the network interface flags are updated. This routine is
3411 * responsible for configuring the hardware for proper unicast, multicast,
3412 * promiscuous mode, and all-multi behavior.
3414 static void e1000e_set_rx_mode(struct net_device
*netdev
)
3416 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3417 struct e1000_hw
*hw
= &adapter
->hw
;
3420 if (pm_runtime_suspended(netdev
->dev
.parent
))
3423 /* Check for Promiscuous and All Multicast modes */
3426 /* clear the affected bits */
3427 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3429 if (netdev
->flags
& IFF_PROMISC
) {
3430 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3431 /* Do not hardware filter VLANs in promisc mode */
3432 e1000e_vlan_filter_disable(adapter
);
3436 if (netdev
->flags
& IFF_ALLMULTI
) {
3437 rctl
|= E1000_RCTL_MPE
;
3439 /* Write addresses to the MTA, if the attempt fails
3440 * then we should just turn on promiscuous mode so
3441 * that we can at least receive multicast traffic
3443 count
= e1000e_write_mc_addr_list(netdev
);
3445 rctl
|= E1000_RCTL_MPE
;
3447 e1000e_vlan_filter_enable(adapter
);
3448 /* Write addresses to available RAR registers, if there is not
3449 * sufficient space to store all the addresses then enable
3450 * unicast promiscuous mode
3452 count
= e1000e_write_uc_addr_list(netdev
);
3454 rctl
|= E1000_RCTL_UPE
;
3459 if (netdev
->features
& NETIF_F_HW_VLAN_CTAG_RX
)
3460 e1000e_vlan_strip_enable(adapter
);
3462 e1000e_vlan_strip_disable(adapter
);
3465 static void e1000e_setup_rss_hash(struct e1000_adapter
*adapter
)
3467 struct e1000_hw
*hw
= &adapter
->hw
;
3472 netdev_rss_key_fill(rss_key
, sizeof(rss_key
));
3473 for (i
= 0; i
< 10; i
++)
3474 ew32(RSSRK(i
), rss_key
[i
]);
3476 /* Direct all traffic to queue 0 */
3477 for (i
= 0; i
< 32; i
++)
3480 /* Disable raw packet checksumming so that RSS hash is placed in
3481 * descriptor on writeback.
3483 rxcsum
= er32(RXCSUM
);
3484 rxcsum
|= E1000_RXCSUM_PCSD
;
3486 ew32(RXCSUM
, rxcsum
);
3488 mrqc
= (E1000_MRQC_RSS_FIELD_IPV4
|
3489 E1000_MRQC_RSS_FIELD_IPV4_TCP
|
3490 E1000_MRQC_RSS_FIELD_IPV6
|
3491 E1000_MRQC_RSS_FIELD_IPV6_TCP
|
3492 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX
);
3498 * e1000e_get_base_timinca - get default SYSTIM time increment attributes
3499 * @adapter: board private structure
3500 * @timinca: pointer to returned time increment attributes
3502 * Get attributes for incrementing the System Time Register SYSTIML/H at
3503 * the default base frequency, and set the cyclecounter shift value.
3505 s32
e1000e_get_base_timinca(struct e1000_adapter
*adapter
, u32
*timinca
)
3507 struct e1000_hw
*hw
= &adapter
->hw
;
3508 u32 incvalue
, incperiod
, shift
;
3510 /* Make sure clock is enabled on I217/I218/I219 before checking
3513 if (((hw
->mac
.type
== e1000_pch_lpt
) ||
3514 (hw
->mac
.type
== e1000_pch_spt
)) &&
3515 !(er32(TSYNCTXCTL
) & E1000_TSYNCTXCTL_ENABLED
) &&
3516 !(er32(TSYNCRXCTL
) & E1000_TSYNCRXCTL_ENABLED
)) {
3517 u32 fextnvm7
= er32(FEXTNVM7
);
3519 if (!(fextnvm7
& (1 << 0))) {
3520 ew32(FEXTNVM7
, fextnvm7
| (1 << 0));
3525 switch (hw
->mac
.type
) {
3529 /* On I217, I218 and I219, the clock frequency is 25MHz
3530 * or 96MHz as indicated by the System Clock Frequency
3533 if (((hw
->mac
.type
!= e1000_pch_lpt
) &&
3534 (hw
->mac
.type
!= e1000_pch_spt
)) ||
3535 (er32(TSYNCRXCTL
) & E1000_TSYNCRXCTL_SYSCFI
)) {
3536 /* Stable 96MHz frequency */
3537 incperiod
= INCPERIOD_96MHz
;
3538 incvalue
= INCVALUE_96MHz
;
3539 shift
= INCVALUE_SHIFT_96MHz
;
3540 adapter
->cc
.shift
= shift
+ INCPERIOD_SHIFT_96MHz
;
3546 /* Stable 25MHz frequency */
3547 incperiod
= INCPERIOD_25MHz
;
3548 incvalue
= INCVALUE_25MHz
;
3549 shift
= INCVALUE_SHIFT_25MHz
;
3550 adapter
->cc
.shift
= shift
;
3556 *timinca
= ((incperiod
<< E1000_TIMINCA_INCPERIOD_SHIFT
) |
3557 ((incvalue
<< shift
) & E1000_TIMINCA_INCVALUE_MASK
));
3563 * e1000e_config_hwtstamp - configure the hwtstamp registers and enable/disable
3564 * @adapter: board private structure
3566 * Outgoing time stamping can be enabled and disabled. Play nice and
3567 * disable it when requested, although it shouldn't cause any overhead
3568 * when no packet needs it. At most one packet in the queue may be
3569 * marked for time stamping, otherwise it would be impossible to tell
3570 * for sure to which packet the hardware time stamp belongs.
3572 * Incoming time stamping has to be configured via the hardware filters.
3573 * Not all combinations are supported, in particular event type has to be
3574 * specified. Matching the kind of event packet is not supported, with the
3575 * exception of "all V2 events regardless of level 2 or 4".
3577 static int e1000e_config_hwtstamp(struct e1000_adapter
*adapter
,
3578 struct hwtstamp_config
*config
)
3580 struct e1000_hw
*hw
= &adapter
->hw
;
3581 u32 tsync_tx_ctl
= E1000_TSYNCTXCTL_ENABLED
;
3582 u32 tsync_rx_ctl
= E1000_TSYNCRXCTL_ENABLED
;
3590 if (!(adapter
->flags
& FLAG_HAS_HW_TIMESTAMP
))
3593 /* flags reserved for future extensions - must be zero */
3597 switch (config
->tx_type
) {
3598 case HWTSTAMP_TX_OFF
:
3601 case HWTSTAMP_TX_ON
:
3607 switch (config
->rx_filter
) {
3608 case HWTSTAMP_FILTER_NONE
:
3611 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC
:
3612 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L4_V1
;
3613 rxmtrl
= E1000_RXMTRL_PTP_V1_SYNC_MESSAGE
;
3616 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ
:
3617 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L4_V1
;
3618 rxmtrl
= E1000_RXMTRL_PTP_V1_DELAY_REQ_MESSAGE
;
3621 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC
:
3622 /* Also time stamps V2 L2 Path Delay Request/Response */
3623 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L2_V2
;
3624 rxmtrl
= E1000_RXMTRL_PTP_V2_SYNC_MESSAGE
;
3627 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ
:
3628 /* Also time stamps V2 L2 Path Delay Request/Response. */
3629 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L2_V2
;
3630 rxmtrl
= E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE
;
3633 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC
:
3634 /* Hardware cannot filter just V2 L4 Sync messages;
3635 * fall-through to V2 (both L2 and L4) Sync.
3637 case HWTSTAMP_FILTER_PTP_V2_SYNC
:
3638 /* Also time stamps V2 Path Delay Request/Response. */
3639 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L2_L4_V2
;
3640 rxmtrl
= E1000_RXMTRL_PTP_V2_SYNC_MESSAGE
;
3644 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ
:
3645 /* Hardware cannot filter just V2 L4 Delay Request messages;
3646 * fall-through to V2 (both L2 and L4) Delay Request.
3648 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ
:
3649 /* Also time stamps V2 Path Delay Request/Response. */
3650 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L2_L4_V2
;
3651 rxmtrl
= E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE
;
3655 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT
:
3656 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT
:
3657 /* Hardware cannot filter just V2 L4 or L2 Event messages;
3658 * fall-through to all V2 (both L2 and L4) Events.
3660 case HWTSTAMP_FILTER_PTP_V2_EVENT
:
3661 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_EVENT_V2
;
3662 config
->rx_filter
= HWTSTAMP_FILTER_PTP_V2_EVENT
;
3666 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT
:
3667 /* For V1, the hardware can only filter Sync messages or
3668 * Delay Request messages but not both so fall-through to
3669 * time stamp all packets.
3671 case HWTSTAMP_FILTER_ALL
:
3674 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_ALL
;
3675 config
->rx_filter
= HWTSTAMP_FILTER_ALL
;
3681 adapter
->hwtstamp_config
= *config
;
3683 /* enable/disable Tx h/w time stamping */
3684 regval
= er32(TSYNCTXCTL
);
3685 regval
&= ~E1000_TSYNCTXCTL_ENABLED
;
3686 regval
|= tsync_tx_ctl
;
3687 ew32(TSYNCTXCTL
, regval
);
3688 if ((er32(TSYNCTXCTL
) & E1000_TSYNCTXCTL_ENABLED
) !=
3689 (regval
& E1000_TSYNCTXCTL_ENABLED
)) {
3690 e_err("Timesync Tx Control register not set as expected\n");
3694 /* enable/disable Rx h/w time stamping */
3695 regval
= er32(TSYNCRXCTL
);
3696 regval
&= ~(E1000_TSYNCRXCTL_ENABLED
| E1000_TSYNCRXCTL_TYPE_MASK
);
3697 regval
|= tsync_rx_ctl
;
3698 ew32(TSYNCRXCTL
, regval
);
3699 if ((er32(TSYNCRXCTL
) & (E1000_TSYNCRXCTL_ENABLED
|
3700 E1000_TSYNCRXCTL_TYPE_MASK
)) !=
3701 (regval
& (E1000_TSYNCRXCTL_ENABLED
|
3702 E1000_TSYNCRXCTL_TYPE_MASK
))) {
3703 e_err("Timesync Rx Control register not set as expected\n");
3707 /* L2: define ethertype filter for time stamped packets */
3709 rxmtrl
|= ETH_P_1588
;
3711 /* define which PTP packets get time stamped */
3712 ew32(RXMTRL
, rxmtrl
);
3714 /* Filter by destination port */
3716 rxudp
= PTP_EV_PORT
;
3717 cpu_to_be16s(&rxudp
);
3723 /* Clear TSYNCRXCTL_VALID & TSYNCTXCTL_VALID bit */
3727 /* Get and set the System Time Register SYSTIM base frequency */
3728 ret_val
= e1000e_get_base_timinca(adapter
, ®val
);
3731 ew32(TIMINCA
, regval
);
3733 /* reset the ns time counter */
3734 timecounter_init(&adapter
->tc
, &adapter
->cc
,
3735 ktime_to_ns(ktime_get_real()));
3741 * e1000_configure - configure the hardware for Rx and Tx
3742 * @adapter: private board structure
3744 static void e1000_configure(struct e1000_adapter
*adapter
)
3746 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
3748 e1000e_set_rx_mode(adapter
->netdev
);
3750 e1000_restore_vlan(adapter
);
3751 e1000_init_manageability_pt(adapter
);
3753 e1000_configure_tx(adapter
);
3755 if (adapter
->netdev
->features
& NETIF_F_RXHASH
)
3756 e1000e_setup_rss_hash(adapter
);
3757 e1000_setup_rctl(adapter
);
3758 e1000_configure_rx(adapter
);
3759 adapter
->alloc_rx_buf(rx_ring
, e1000_desc_unused(rx_ring
), GFP_KERNEL
);
3763 * e1000e_power_up_phy - restore link in case the phy was powered down
3764 * @adapter: address of board private structure
3766 * The phy may be powered down to save power and turn off link when the
3767 * driver is unloaded and wake on lan is not enabled (among others)
3768 * *** this routine MUST be followed by a call to e1000e_reset ***
3770 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
3772 if (adapter
->hw
.phy
.ops
.power_up
)
3773 adapter
->hw
.phy
.ops
.power_up(&adapter
->hw
);
3775 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
3779 * e1000_power_down_phy - Power down the PHY
3781 * Power down the PHY so no link is implied when interface is down.
3782 * The PHY cannot be powered down if management or WoL is active.
3784 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
3786 if (adapter
->hw
.phy
.ops
.power_down
)
3787 adapter
->hw
.phy
.ops
.power_down(&adapter
->hw
);
3791 * e1000e_reset - bring the hardware into a known good state
3793 * This function boots the hardware and enables some settings that
3794 * require a configuration cycle of the hardware - those cannot be
3795 * set/changed during runtime. After reset the device needs to be
3796 * properly configured for Rx, Tx etc.
3798 void e1000e_reset(struct e1000_adapter
*adapter
)
3800 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3801 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
3802 struct e1000_hw
*hw
= &adapter
->hw
;
3803 u32 tx_space
, min_tx_space
, min_rx_space
;
3804 u32 pba
= adapter
->pba
;
3807 /* reset Packet Buffer Allocation to default */
3810 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3811 /* To maintain wire speed transmits, the Tx FIFO should be
3812 * large enough to accommodate two full transmit packets,
3813 * rounded up to the next 1KB and expressed in KB. Likewise,
3814 * the Rx FIFO should be large enough to accommodate at least
3815 * one full receive packet and is similarly rounded up and
3819 /* upper 16 bits has Tx packet buffer allocation size in KB */
3820 tx_space
= pba
>> 16;
3821 /* lower 16 bits has Rx packet buffer allocation size in KB */
3823 /* the Tx fifo also stores 16 bytes of information about the Tx
3824 * but don't include ethernet FCS because hardware appends it
3826 min_tx_space
= (adapter
->max_frame_size
+
3827 sizeof(struct e1000_tx_desc
) - ETH_FCS_LEN
) * 2;
3828 min_tx_space
= ALIGN(min_tx_space
, 1024);
3829 min_tx_space
>>= 10;
3830 /* software strips receive CRC, so leave room for it */
3831 min_rx_space
= adapter
->max_frame_size
;
3832 min_rx_space
= ALIGN(min_rx_space
, 1024);
3833 min_rx_space
>>= 10;
3835 /* If current Tx allocation is less than the min Tx FIFO size,
3836 * and the min Tx FIFO size is less than the current Rx FIFO
3837 * allocation, take space away from current Rx allocation
3839 if ((tx_space
< min_tx_space
) &&
3840 ((min_tx_space
- tx_space
) < pba
)) {
3841 pba
-= min_tx_space
- tx_space
;
3843 /* if short on Rx space, Rx wins and must trump Tx
3846 if (pba
< min_rx_space
)
3853 /* flow control settings
3855 * The high water mark must be low enough to fit one full frame
3856 * (or the size used for early receive) above it in the Rx FIFO.
3857 * Set it to the lower of:
3858 * - 90% of the Rx FIFO size, and
3859 * - the full Rx FIFO size minus one full frame
3861 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
3862 fc
->pause_time
= 0xFFFF;
3864 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
3865 fc
->send_xon
= true;
3866 fc
->current_mode
= fc
->requested_mode
;
3868 switch (hw
->mac
.type
) {
3870 case e1000_ich10lan
:
3871 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3874 fc
->high_water
= 0x2800;
3875 fc
->low_water
= fc
->high_water
- 8;
3880 hwm
= min(((pba
<< 10) * 9 / 10),
3881 ((pba
<< 10) - adapter
->max_frame_size
));
3883 fc
->high_water
= hwm
& E1000_FCRTH_RTH
; /* 8-byte granularity */
3884 fc
->low_water
= fc
->high_water
- 8;
3887 /* Workaround PCH LOM adapter hangs with certain network
3888 * loads. If hangs persist, try disabling Tx flow control.
3890 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3891 fc
->high_water
= 0x3500;
3892 fc
->low_water
= 0x1500;
3894 fc
->high_water
= 0x5000;
3895 fc
->low_water
= 0x3000;
3897 fc
->refresh_time
= 0x1000;
3902 fc
->refresh_time
= 0x0400;
3904 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
) {
3905 fc
->high_water
= 0x05C20;
3906 fc
->low_water
= 0x05048;
3907 fc
->pause_time
= 0x0650;
3913 fc
->high_water
= ((pba
<< 10) * 9 / 10) & E1000_FCRTH_RTH
;
3914 fc
->low_water
= ((pba
<< 10) * 8 / 10) & E1000_FCRTL_RTL
;
3918 /* Alignment of Tx data is on an arbitrary byte boundary with the
3919 * maximum size per Tx descriptor limited only to the transmit
3920 * allocation of the packet buffer minus 96 bytes with an upper
3921 * limit of 24KB due to receive synchronization limitations.
3923 adapter
->tx_fifo_limit
= min_t(u32
, ((er32(PBA
) >> 16) << 10) - 96,
3926 /* Disable Adaptive Interrupt Moderation if 2 full packets cannot
3927 * fit in receive buffer.
3929 if (adapter
->itr_setting
& 0x3) {
3930 if ((adapter
->max_frame_size
* 2) > (pba
<< 10)) {
3931 if (!(adapter
->flags2
& FLAG2_DISABLE_AIM
)) {
3932 dev_info(&adapter
->pdev
->dev
,
3933 "Interrupt Throttle Rate off\n");
3934 adapter
->flags2
|= FLAG2_DISABLE_AIM
;
3935 e1000e_write_itr(adapter
, 0);
3937 } else if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
3938 dev_info(&adapter
->pdev
->dev
,
3939 "Interrupt Throttle Rate on\n");
3940 adapter
->flags2
&= ~FLAG2_DISABLE_AIM
;
3941 adapter
->itr
= 20000;
3942 e1000e_write_itr(adapter
, adapter
->itr
);
3946 /* Allow time for pending master requests to run */
3947 mac
->ops
.reset_hw(hw
);
3949 /* For parts with AMT enabled, let the firmware know
3950 * that the network interface is in control
3952 if (adapter
->flags
& FLAG_HAS_AMT
)
3953 e1000e_get_hw_control(adapter
);
3957 if (mac
->ops
.init_hw(hw
))
3958 e_err("Hardware Error\n");
3960 e1000_update_mng_vlan(adapter
);
3962 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3963 ew32(VET
, ETH_P_8021Q
);
3965 e1000e_reset_adaptive(hw
);
3967 /* initialize systim and reset the ns time counter */
3968 e1000e_config_hwtstamp(adapter
, &adapter
->hwtstamp_config
);
3970 /* Set EEE advertisement as appropriate */
3971 if (adapter
->flags2
& FLAG2_HAS_EEE
) {
3975 switch (hw
->phy
.type
) {
3976 case e1000_phy_82579
:
3977 adv_addr
= I82579_EEE_ADVERTISEMENT
;
3979 case e1000_phy_i217
:
3980 adv_addr
= I217_EEE_ADVERTISEMENT
;
3983 dev_err(&adapter
->pdev
->dev
,
3984 "Invalid PHY type setting EEE advertisement\n");
3988 ret_val
= hw
->phy
.ops
.acquire(hw
);
3990 dev_err(&adapter
->pdev
->dev
,
3991 "EEE advertisement - unable to acquire PHY\n");
3995 e1000_write_emi_reg_locked(hw
, adv_addr
,
3996 hw
->dev_spec
.ich8lan
.eee_disable
?
3997 0 : adapter
->eee_advert
);
3999 hw
->phy
.ops
.release(hw
);
4002 if (!netif_running(adapter
->netdev
) &&
4003 !test_bit(__E1000_TESTING
, &adapter
->state
))
4004 e1000_power_down_phy(adapter
);
4006 e1000_get_phy_info(hw
);
4008 if ((adapter
->flags
& FLAG_HAS_SMART_POWER_DOWN
) &&
4009 !(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
4011 /* speed up time to link by disabling smart power down, ignore
4012 * the return value of this function because there is nothing
4013 * different we would do if it failed
4015 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
4016 phy_data
&= ~IGP02E1000_PM_SPD
;
4017 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
4021 int e1000e_up(struct e1000_adapter
*adapter
)
4023 struct e1000_hw
*hw
= &adapter
->hw
;
4025 /* hardware has been reset, we need to reload some things */
4026 e1000_configure(adapter
);
4028 clear_bit(__E1000_DOWN
, &adapter
->state
);
4030 if (adapter
->msix_entries
)
4031 e1000_configure_msix(adapter
);
4032 e1000_irq_enable(adapter
);
4034 netif_start_queue(adapter
->netdev
);
4036 /* fire a link change interrupt to start the watchdog */
4037 if (adapter
->msix_entries
)
4038 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
4040 ew32(ICS
, E1000_ICS_LSC
);
4045 static void e1000e_flush_descriptors(struct e1000_adapter
*adapter
)
4047 struct e1000_hw
*hw
= &adapter
->hw
;
4049 if (!(adapter
->flags2
& FLAG2_DMA_BURST
))
4052 /* flush pending descriptor writebacks to memory */
4053 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
4054 ew32(RDTR
, adapter
->rx_int_delay
| E1000_RDTR_FPD
);
4056 /* execute the writes immediately */
4059 /* due to rare timing issues, write to TIDV/RDTR again to ensure the
4060 * write is successful
4062 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
4063 ew32(RDTR
, adapter
->rx_int_delay
| E1000_RDTR_FPD
);
4065 /* execute the writes immediately */
4069 static void e1000e_update_stats(struct e1000_adapter
*adapter
);
4072 * e1000e_down - quiesce the device and optionally reset the hardware
4073 * @adapter: board private structure
4074 * @reset: boolean flag to reset the hardware or not
4076 void e1000e_down(struct e1000_adapter
*adapter
, bool reset
)
4078 struct net_device
*netdev
= adapter
->netdev
;
4079 struct e1000_hw
*hw
= &adapter
->hw
;
4082 /* signal that we're down so the interrupt handler does not
4083 * reschedule our watchdog timer
4085 set_bit(__E1000_DOWN
, &adapter
->state
);
4087 netif_carrier_off(netdev
);
4089 /* disable receives in the hardware */
4091 if (!(adapter
->flags2
& FLAG2_NO_DISABLE_RX
))
4092 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
4093 /* flush and sleep below */
4095 netif_stop_queue(netdev
);
4097 /* disable transmits in the hardware */
4099 tctl
&= ~E1000_TCTL_EN
;
4102 /* flush both disables and wait for them to finish */
4104 usleep_range(10000, 20000);
4106 e1000_irq_disable(adapter
);
4108 napi_synchronize(&adapter
->napi
);
4110 del_timer_sync(&adapter
->watchdog_timer
);
4111 del_timer_sync(&adapter
->phy_info_timer
);
4113 spin_lock(&adapter
->stats64_lock
);
4114 e1000e_update_stats(adapter
);
4115 spin_unlock(&adapter
->stats64_lock
);
4117 e1000e_flush_descriptors(adapter
);
4118 e1000_clean_tx_ring(adapter
->tx_ring
);
4119 e1000_clean_rx_ring(adapter
->rx_ring
);
4121 adapter
->link_speed
= 0;
4122 adapter
->link_duplex
= 0;
4124 /* Disable Si errata workaround on PCHx for jumbo frame flow */
4125 if ((hw
->mac
.type
>= e1000_pch2lan
) &&
4126 (adapter
->netdev
->mtu
> ETH_DATA_LEN
) &&
4127 e1000_lv_jumbo_workaround_ich8lan(hw
, false))
4128 e_dbg("failed to disable jumbo frame workaround mode\n");
4130 if (reset
&& !pci_channel_offline(adapter
->pdev
))
4131 e1000e_reset(adapter
);
4134 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
4137 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
4138 usleep_range(1000, 2000);
4139 e1000e_down(adapter
, true);
4141 clear_bit(__E1000_RESETTING
, &adapter
->state
);
4145 * e1000e_cyclecounter_read - read raw cycle counter (used by time counter)
4146 * @cc: cyclecounter structure
4148 static cycle_t
e1000e_cyclecounter_read(const struct cyclecounter
*cc
)
4150 struct e1000_adapter
*adapter
= container_of(cc
, struct e1000_adapter
,
4152 struct e1000_hw
*hw
= &adapter
->hw
;
4153 cycle_t systim
, systim_next
;
4155 /* latch SYSTIMH on read of SYSTIML */
4156 systim
= (cycle_t
)er32(SYSTIML
);
4157 systim
|= (cycle_t
)er32(SYSTIMH
) << 32;
4159 if ((hw
->mac
.type
== e1000_82574
) || (hw
->mac
.type
== e1000_82583
)) {
4160 u64 incvalue
, time_delta
, rem
, temp
;
4163 /* errata for 82574/82583 possible bad bits read from SYSTIMH/L
4164 * check to see that the time is incrementing at a reasonable
4165 * rate and is a multiple of incvalue
4167 incvalue
= er32(TIMINCA
) & E1000_TIMINCA_INCVALUE_MASK
;
4168 for (i
= 0; i
< E1000_MAX_82574_SYSTIM_REREADS
; i
++) {
4169 /* latch SYSTIMH on read of SYSTIML */
4170 systim_next
= (cycle_t
)er32(SYSTIML
);
4171 systim_next
|= (cycle_t
)er32(SYSTIMH
) << 32;
4173 time_delta
= systim_next
- systim
;
4175 rem
= do_div(temp
, incvalue
);
4177 systim
= systim_next
;
4179 if ((time_delta
< E1000_82574_SYSTIM_EPSILON
) &&
4188 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
4189 * @adapter: board private structure to initialize
4191 * e1000_sw_init initializes the Adapter private data structure.
4192 * Fields are initialized based on PCI device information and
4193 * OS network device settings (MTU size).
4195 static int e1000_sw_init(struct e1000_adapter
*adapter
)
4197 struct net_device
*netdev
= adapter
->netdev
;
4199 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
4200 adapter
->rx_ps_bsize0
= 128;
4201 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4202 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
4203 adapter
->tx_ring_count
= E1000_DEFAULT_TXD
;
4204 adapter
->rx_ring_count
= E1000_DEFAULT_RXD
;
4206 spin_lock_init(&adapter
->stats64_lock
);
4208 e1000e_set_interrupt_capability(adapter
);
4210 if (e1000_alloc_queues(adapter
))
4213 /* Setup hardware time stamping cyclecounter */
4214 if (adapter
->flags
& FLAG_HAS_HW_TIMESTAMP
) {
4215 adapter
->cc
.read
= e1000e_cyclecounter_read
;
4216 adapter
->cc
.mask
= CYCLECOUNTER_MASK(64);
4217 adapter
->cc
.mult
= 1;
4218 /* cc.shift set in e1000e_get_base_tininca() */
4220 spin_lock_init(&adapter
->systim_lock
);
4221 INIT_WORK(&adapter
->tx_hwtstamp_work
, e1000e_tx_hwtstamp_work
);
4224 /* Explicitly disable IRQ since the NIC can be in any state. */
4225 e1000_irq_disable(adapter
);
4227 set_bit(__E1000_DOWN
, &adapter
->state
);
4232 * e1000_intr_msi_test - Interrupt Handler
4233 * @irq: interrupt number
4234 * @data: pointer to a network interface device structure
4236 static irqreturn_t
e1000_intr_msi_test(int __always_unused irq
, void *data
)
4238 struct net_device
*netdev
= data
;
4239 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4240 struct e1000_hw
*hw
= &adapter
->hw
;
4241 u32 icr
= er32(ICR
);
4243 e_dbg("icr is %08X\n", icr
);
4244 if (icr
& E1000_ICR_RXSEQ
) {
4245 adapter
->flags
&= ~FLAG_MSI_TEST_FAILED
;
4246 /* Force memory writes to complete before acknowledging the
4247 * interrupt is handled.
4256 * e1000_test_msi_interrupt - Returns 0 for successful test
4257 * @adapter: board private struct
4259 * code flow taken from tg3.c
4261 static int e1000_test_msi_interrupt(struct e1000_adapter
*adapter
)
4263 struct net_device
*netdev
= adapter
->netdev
;
4264 struct e1000_hw
*hw
= &adapter
->hw
;
4267 /* poll_enable hasn't been called yet, so don't need disable */
4268 /* clear any pending events */
4271 /* free the real vector and request a test handler */
4272 e1000_free_irq(adapter
);
4273 e1000e_reset_interrupt_capability(adapter
);
4275 /* Assume that the test fails, if it succeeds then the test
4276 * MSI irq handler will unset this flag
4278 adapter
->flags
|= FLAG_MSI_TEST_FAILED
;
4280 err
= pci_enable_msi(adapter
->pdev
);
4282 goto msi_test_failed
;
4284 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi_test
, 0,
4285 netdev
->name
, netdev
);
4287 pci_disable_msi(adapter
->pdev
);
4288 goto msi_test_failed
;
4291 /* Force memory writes to complete before enabling and firing an
4296 e1000_irq_enable(adapter
);
4298 /* fire an unusual interrupt on the test handler */
4299 ew32(ICS
, E1000_ICS_RXSEQ
);
4303 e1000_irq_disable(adapter
);
4305 rmb(); /* read flags after interrupt has been fired */
4307 if (adapter
->flags
& FLAG_MSI_TEST_FAILED
) {
4308 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
4309 e_info("MSI interrupt test failed, using legacy interrupt.\n");
4311 e_dbg("MSI interrupt test succeeded!\n");
4314 free_irq(adapter
->pdev
->irq
, netdev
);
4315 pci_disable_msi(adapter
->pdev
);
4318 e1000e_set_interrupt_capability(adapter
);
4319 return e1000_request_irq(adapter
);
4323 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
4324 * @adapter: board private struct
4326 * code flow taken from tg3.c, called with e1000 interrupts disabled.
4328 static int e1000_test_msi(struct e1000_adapter
*adapter
)
4333 if (!(adapter
->flags
& FLAG_MSI_ENABLED
))
4336 /* disable SERR in case the MSI write causes a master abort */
4337 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
4338 if (pci_cmd
& PCI_COMMAND_SERR
)
4339 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
,
4340 pci_cmd
& ~PCI_COMMAND_SERR
);
4342 err
= e1000_test_msi_interrupt(adapter
);
4344 /* re-enable SERR */
4345 if (pci_cmd
& PCI_COMMAND_SERR
) {
4346 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
4347 pci_cmd
|= PCI_COMMAND_SERR
;
4348 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
, pci_cmd
);
4355 * e1000_open - Called when a network interface is made active
4356 * @netdev: network interface device structure
4358 * Returns 0 on success, negative value on failure
4360 * The open entry point is called when a network interface is made
4361 * active by the system (IFF_UP). At this point all resources needed
4362 * for transmit and receive operations are allocated, the interrupt
4363 * handler is registered with the OS, the watchdog timer is started,
4364 * and the stack is notified that the interface is ready.
4366 static int e1000_open(struct net_device
*netdev
)
4368 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4369 struct e1000_hw
*hw
= &adapter
->hw
;
4370 struct pci_dev
*pdev
= adapter
->pdev
;
4373 /* disallow open during test */
4374 if (test_bit(__E1000_TESTING
, &adapter
->state
))
4377 pm_runtime_get_sync(&pdev
->dev
);
4379 netif_carrier_off(netdev
);
4381 /* allocate transmit descriptors */
4382 err
= e1000e_setup_tx_resources(adapter
->tx_ring
);
4386 /* allocate receive descriptors */
4387 err
= e1000e_setup_rx_resources(adapter
->rx_ring
);
4391 /* If AMT is enabled, let the firmware know that the network
4392 * interface is now open and reset the part to a known state.
4394 if (adapter
->flags
& FLAG_HAS_AMT
) {
4395 e1000e_get_hw_control(adapter
);
4396 e1000e_reset(adapter
);
4399 e1000e_power_up_phy(adapter
);
4401 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4402 if ((adapter
->hw
.mng_cookie
.status
& E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
4403 e1000_update_mng_vlan(adapter
);
4405 /* DMA latency requirement to workaround jumbo issue */
4406 pm_qos_add_request(&adapter
->pm_qos_req
, PM_QOS_CPU_DMA_LATENCY
,
4407 PM_QOS_DEFAULT_VALUE
);
4409 /* before we allocate an interrupt, we must be ready to handle it.
4410 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
4411 * as soon as we call pci_request_irq, so we have to setup our
4412 * clean_rx handler before we do so.
4414 e1000_configure(adapter
);
4416 err
= e1000_request_irq(adapter
);
4420 /* Work around PCIe errata with MSI interrupts causing some chipsets to
4421 * ignore e1000e MSI messages, which means we need to test our MSI
4424 if (adapter
->int_mode
!= E1000E_INT_MODE_LEGACY
) {
4425 err
= e1000_test_msi(adapter
);
4427 e_err("Interrupt allocation failed\n");
4432 /* From here on the code is the same as e1000e_up() */
4433 clear_bit(__E1000_DOWN
, &adapter
->state
);
4435 napi_enable(&adapter
->napi
);
4437 e1000_irq_enable(adapter
);
4439 adapter
->tx_hang_recheck
= false;
4440 netif_start_queue(netdev
);
4442 hw
->mac
.get_link_status
= true;
4443 pm_runtime_put(&pdev
->dev
);
4445 /* fire a link status change interrupt to start the watchdog */
4446 if (adapter
->msix_entries
)
4447 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
4449 ew32(ICS
, E1000_ICS_LSC
);
4454 e1000e_release_hw_control(adapter
);
4455 e1000_power_down_phy(adapter
);
4456 e1000e_free_rx_resources(adapter
->rx_ring
);
4458 e1000e_free_tx_resources(adapter
->tx_ring
);
4460 e1000e_reset(adapter
);
4461 pm_runtime_put_sync(&pdev
->dev
);
4467 * e1000_close - Disables a network interface
4468 * @netdev: network interface device structure
4470 * Returns 0, this is not allowed to fail
4472 * The close entry point is called when an interface is de-activated
4473 * by the OS. The hardware is still under the drivers control, but
4474 * needs to be disabled. A global MAC reset is issued to stop the
4475 * hardware, and all transmit and receive resources are freed.
4477 static int e1000_close(struct net_device
*netdev
)
4479 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4480 struct pci_dev
*pdev
= adapter
->pdev
;
4481 int count
= E1000_CHECK_RESET_COUNT
;
4483 while (test_bit(__E1000_RESETTING
, &adapter
->state
) && count
--)
4484 usleep_range(10000, 20000);
4486 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
4488 pm_runtime_get_sync(&pdev
->dev
);
4490 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
4491 e1000e_down(adapter
, true);
4492 e1000_free_irq(adapter
);
4494 /* Link status message must follow this format */
4495 pr_info("%s NIC Link is Down\n", adapter
->netdev
->name
);
4498 napi_disable(&adapter
->napi
);
4500 e1000e_free_tx_resources(adapter
->tx_ring
);
4501 e1000e_free_rx_resources(adapter
->rx_ring
);
4503 /* kill manageability vlan ID if supported, but not if a vlan with
4504 * the same ID is registered on the host OS (let 8021q kill it)
4506 if (adapter
->hw
.mng_cookie
.status
& E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)
4507 e1000_vlan_rx_kill_vid(netdev
, htons(ETH_P_8021Q
),
4508 adapter
->mng_vlan_id
);
4510 /* If AMT is enabled, let the firmware know that the network
4511 * interface is now closed
4513 if ((adapter
->flags
& FLAG_HAS_AMT
) &&
4514 !test_bit(__E1000_TESTING
, &adapter
->state
))
4515 e1000e_release_hw_control(adapter
);
4517 pm_qos_remove_request(&adapter
->pm_qos_req
);
4519 pm_runtime_put_sync(&pdev
->dev
);
4525 * e1000_set_mac - Change the Ethernet Address of the NIC
4526 * @netdev: network interface device structure
4527 * @p: pointer to an address structure
4529 * Returns 0 on success, negative on failure
4531 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
4533 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4534 struct e1000_hw
*hw
= &adapter
->hw
;
4535 struct sockaddr
*addr
= p
;
4537 if (!is_valid_ether_addr(addr
->sa_data
))
4538 return -EADDRNOTAVAIL
;
4540 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
4541 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
4543 hw
->mac
.ops
.rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
4545 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
4546 /* activate the work around */
4547 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
4549 /* Hold a copy of the LAA in RAR[14] This is done so that
4550 * between the time RAR[0] gets clobbered and the time it
4551 * gets fixed (in e1000_watchdog), the actual LAA is in one
4552 * of the RARs and no incoming packets directed to this port
4553 * are dropped. Eventually the LAA will be in RAR[0] and
4556 hw
->mac
.ops
.rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
,
4557 adapter
->hw
.mac
.rar_entry_count
- 1);
4564 * e1000e_update_phy_task - work thread to update phy
4565 * @work: pointer to our work struct
4567 * this worker thread exists because we must acquire a
4568 * semaphore to read the phy, which we could msleep while
4569 * waiting for it, and we can't msleep in a timer.
4571 static void e1000e_update_phy_task(struct work_struct
*work
)
4573 struct e1000_adapter
*adapter
= container_of(work
,
4574 struct e1000_adapter
,
4576 struct e1000_hw
*hw
= &adapter
->hw
;
4578 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4581 e1000_get_phy_info(hw
);
4583 /* Enable EEE on 82579 after link up */
4584 if (hw
->phy
.type
>= e1000_phy_82579
)
4585 e1000_set_eee_pchlan(hw
);
4589 * e1000_update_phy_info - timre call-back to update PHY info
4590 * @data: pointer to adapter cast into an unsigned long
4592 * Need to wait a few seconds after link up to get diagnostic information from
4595 static void e1000_update_phy_info(unsigned long data
)
4597 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
4599 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4602 schedule_work(&adapter
->update_phy_task
);
4606 * e1000e_update_phy_stats - Update the PHY statistics counters
4607 * @adapter: board private structure
4609 * Read/clear the upper 16-bit PHY registers and read/accumulate lower
4611 static void e1000e_update_phy_stats(struct e1000_adapter
*adapter
)
4613 struct e1000_hw
*hw
= &adapter
->hw
;
4617 ret_val
= hw
->phy
.ops
.acquire(hw
);
4621 /* A page set is expensive so check if already on desired page.
4622 * If not, set to the page with the PHY status registers.
4625 ret_val
= e1000e_read_phy_reg_mdic(hw
, IGP01E1000_PHY_PAGE_SELECT
,
4629 if (phy_data
!= (HV_STATS_PAGE
<< IGP_PAGE_SHIFT
)) {
4630 ret_val
= hw
->phy
.ops
.set_page(hw
,
4631 HV_STATS_PAGE
<< IGP_PAGE_SHIFT
);
4636 /* Single Collision Count */
4637 hw
->phy
.ops
.read_reg_page(hw
, HV_SCC_UPPER
, &phy_data
);
4638 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_SCC_LOWER
, &phy_data
);
4640 adapter
->stats
.scc
+= phy_data
;
4642 /* Excessive Collision Count */
4643 hw
->phy
.ops
.read_reg_page(hw
, HV_ECOL_UPPER
, &phy_data
);
4644 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_ECOL_LOWER
, &phy_data
);
4646 adapter
->stats
.ecol
+= phy_data
;
4648 /* Multiple Collision Count */
4649 hw
->phy
.ops
.read_reg_page(hw
, HV_MCC_UPPER
, &phy_data
);
4650 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_MCC_LOWER
, &phy_data
);
4652 adapter
->stats
.mcc
+= phy_data
;
4654 /* Late Collision Count */
4655 hw
->phy
.ops
.read_reg_page(hw
, HV_LATECOL_UPPER
, &phy_data
);
4656 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_LATECOL_LOWER
, &phy_data
);
4658 adapter
->stats
.latecol
+= phy_data
;
4660 /* Collision Count - also used for adaptive IFS */
4661 hw
->phy
.ops
.read_reg_page(hw
, HV_COLC_UPPER
, &phy_data
);
4662 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_COLC_LOWER
, &phy_data
);
4664 hw
->mac
.collision_delta
= phy_data
;
4667 hw
->phy
.ops
.read_reg_page(hw
, HV_DC_UPPER
, &phy_data
);
4668 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_DC_LOWER
, &phy_data
);
4670 adapter
->stats
.dc
+= phy_data
;
4672 /* Transmit with no CRS */
4673 hw
->phy
.ops
.read_reg_page(hw
, HV_TNCRS_UPPER
, &phy_data
);
4674 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_TNCRS_LOWER
, &phy_data
);
4676 adapter
->stats
.tncrs
+= phy_data
;
4679 hw
->phy
.ops
.release(hw
);
4683 * e1000e_update_stats - Update the board statistics counters
4684 * @adapter: board private structure
4686 static void e1000e_update_stats(struct e1000_adapter
*adapter
)
4688 struct net_device
*netdev
= adapter
->netdev
;
4689 struct e1000_hw
*hw
= &adapter
->hw
;
4690 struct pci_dev
*pdev
= adapter
->pdev
;
4692 /* Prevent stats update while adapter is being reset, or if the pci
4693 * connection is down.
4695 if (adapter
->link_speed
== 0)
4697 if (pci_channel_offline(pdev
))
4700 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
4701 adapter
->stats
.gprc
+= er32(GPRC
);
4702 adapter
->stats
.gorc
+= er32(GORCL
);
4703 er32(GORCH
); /* Clear gorc */
4704 adapter
->stats
.bprc
+= er32(BPRC
);
4705 adapter
->stats
.mprc
+= er32(MPRC
);
4706 adapter
->stats
.roc
+= er32(ROC
);
4708 adapter
->stats
.mpc
+= er32(MPC
);
4710 /* Half-duplex statistics */
4711 if (adapter
->link_duplex
== HALF_DUPLEX
) {
4712 if (adapter
->flags2
& FLAG2_HAS_PHY_STATS
) {
4713 e1000e_update_phy_stats(adapter
);
4715 adapter
->stats
.scc
+= er32(SCC
);
4716 adapter
->stats
.ecol
+= er32(ECOL
);
4717 adapter
->stats
.mcc
+= er32(MCC
);
4718 adapter
->stats
.latecol
+= er32(LATECOL
);
4719 adapter
->stats
.dc
+= er32(DC
);
4721 hw
->mac
.collision_delta
= er32(COLC
);
4723 if ((hw
->mac
.type
!= e1000_82574
) &&
4724 (hw
->mac
.type
!= e1000_82583
))
4725 adapter
->stats
.tncrs
+= er32(TNCRS
);
4727 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
4730 adapter
->stats
.xonrxc
+= er32(XONRXC
);
4731 adapter
->stats
.xontxc
+= er32(XONTXC
);
4732 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
4733 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
4734 adapter
->stats
.gptc
+= er32(GPTC
);
4735 adapter
->stats
.gotc
+= er32(GOTCL
);
4736 er32(GOTCH
); /* Clear gotc */
4737 adapter
->stats
.rnbc
+= er32(RNBC
);
4738 adapter
->stats
.ruc
+= er32(RUC
);
4740 adapter
->stats
.mptc
+= er32(MPTC
);
4741 adapter
->stats
.bptc
+= er32(BPTC
);
4743 /* used for adaptive IFS */
4745 hw
->mac
.tx_packet_delta
= er32(TPT
);
4746 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
4748 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
4749 adapter
->stats
.rxerrc
+= er32(RXERRC
);
4750 adapter
->stats
.cexterr
+= er32(CEXTERR
);
4751 adapter
->stats
.tsctc
+= er32(TSCTC
);
4752 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
4754 /* Fill out the OS statistics structure */
4755 netdev
->stats
.multicast
= adapter
->stats
.mprc
;
4756 netdev
->stats
.collisions
= adapter
->stats
.colc
;
4760 /* RLEC on some newer hardware can be incorrect so build
4761 * our own version based on RUC and ROC
4763 netdev
->stats
.rx_errors
= adapter
->stats
.rxerrc
+
4764 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
4765 adapter
->stats
.ruc
+ adapter
->stats
.roc
+ adapter
->stats
.cexterr
;
4766 netdev
->stats
.rx_length_errors
= adapter
->stats
.ruc
+
4768 netdev
->stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
4769 netdev
->stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
4770 netdev
->stats
.rx_missed_errors
= adapter
->stats
.mpc
;
4773 netdev
->stats
.tx_errors
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
4774 netdev
->stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
4775 netdev
->stats
.tx_window_errors
= adapter
->stats
.latecol
;
4776 netdev
->stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
4778 /* Tx Dropped needs to be maintained elsewhere */
4780 /* Management Stats */
4781 adapter
->stats
.mgptc
+= er32(MGTPTC
);
4782 adapter
->stats
.mgprc
+= er32(MGTPRC
);
4783 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
4785 /* Correctable ECC Errors */
4786 if ((hw
->mac
.type
== e1000_pch_lpt
) ||
4787 (hw
->mac
.type
== e1000_pch_spt
)) {
4788 u32 pbeccsts
= er32(PBECCSTS
);
4790 adapter
->corr_errors
+=
4791 pbeccsts
& E1000_PBECCSTS_CORR_ERR_CNT_MASK
;
4792 adapter
->uncorr_errors
+=
4793 (pbeccsts
& E1000_PBECCSTS_UNCORR_ERR_CNT_MASK
) >>
4794 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT
;
4799 * e1000_phy_read_status - Update the PHY register status snapshot
4800 * @adapter: board private structure
4802 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
4804 struct e1000_hw
*hw
= &adapter
->hw
;
4805 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
4807 if (!pm_runtime_suspended((&adapter
->pdev
->dev
)->parent
) &&
4808 (er32(STATUS
) & E1000_STATUS_LU
) &&
4809 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
4812 ret_val
= e1e_rphy(hw
, MII_BMCR
, &phy
->bmcr
);
4813 ret_val
|= e1e_rphy(hw
, MII_BMSR
, &phy
->bmsr
);
4814 ret_val
|= e1e_rphy(hw
, MII_ADVERTISE
, &phy
->advertise
);
4815 ret_val
|= e1e_rphy(hw
, MII_LPA
, &phy
->lpa
);
4816 ret_val
|= e1e_rphy(hw
, MII_EXPANSION
, &phy
->expansion
);
4817 ret_val
|= e1e_rphy(hw
, MII_CTRL1000
, &phy
->ctrl1000
);
4818 ret_val
|= e1e_rphy(hw
, MII_STAT1000
, &phy
->stat1000
);
4819 ret_val
|= e1e_rphy(hw
, MII_ESTATUS
, &phy
->estatus
);
4821 e_warn("Error reading PHY register\n");
4823 /* Do not read PHY registers if link is not up
4824 * Set values to typical power-on defaults
4826 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
4827 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
4828 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
4830 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
4831 ADVERTISE_ALL
| ADVERTISE_CSMA
);
4833 phy
->expansion
= EXPANSION_ENABLENPAGE
;
4834 phy
->ctrl1000
= ADVERTISE_1000FULL
;
4836 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
4840 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
4842 struct e1000_hw
*hw
= &adapter
->hw
;
4843 u32 ctrl
= er32(CTRL
);
4845 /* Link status message must follow this format for user tools */
4846 pr_info("%s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n",
4847 adapter
->netdev
->name
, adapter
->link_speed
,
4848 adapter
->link_duplex
== FULL_DUPLEX
? "Full" : "Half",
4849 (ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
) ? "Rx/Tx" :
4850 (ctrl
& E1000_CTRL_RFCE
) ? "Rx" :
4851 (ctrl
& E1000_CTRL_TFCE
) ? "Tx" : "None");
4854 static bool e1000e_has_link(struct e1000_adapter
*adapter
)
4856 struct e1000_hw
*hw
= &adapter
->hw
;
4857 bool link_active
= false;
4860 /* get_link_status is set on LSC (link status) interrupt or
4861 * Rx sequence error interrupt. get_link_status will stay
4862 * false until the check_for_link establishes link
4863 * for copper adapters ONLY
4865 switch (hw
->phy
.media_type
) {
4866 case e1000_media_type_copper
:
4867 if (hw
->mac
.get_link_status
) {
4868 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4869 link_active
= !hw
->mac
.get_link_status
;
4874 case e1000_media_type_fiber
:
4875 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4876 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
4878 case e1000_media_type_internal_serdes
:
4879 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4880 link_active
= adapter
->hw
.mac
.serdes_has_link
;
4883 case e1000_media_type_unknown
:
4887 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
4888 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
4889 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
4890 e_info("Gigabit has been disabled, downgrading speed\n");
4896 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
4898 /* make sure the receive unit is started */
4899 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
4900 (adapter
->flags
& FLAG_RESTART_NOW
)) {
4901 struct e1000_hw
*hw
= &adapter
->hw
;
4902 u32 rctl
= er32(RCTL
);
4904 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
4905 adapter
->flags
&= ~FLAG_RESTART_NOW
;
4909 static void e1000e_check_82574_phy_workaround(struct e1000_adapter
*adapter
)
4911 struct e1000_hw
*hw
= &adapter
->hw
;
4913 /* With 82574 controllers, PHY needs to be checked periodically
4914 * for hung state and reset, if two calls return true
4916 if (e1000_check_phy_82574(hw
))
4917 adapter
->phy_hang_count
++;
4919 adapter
->phy_hang_count
= 0;
4921 if (adapter
->phy_hang_count
> 1) {
4922 adapter
->phy_hang_count
= 0;
4923 e_dbg("PHY appears hung - resetting\n");
4924 schedule_work(&adapter
->reset_task
);
4929 * e1000_watchdog - Timer Call-back
4930 * @data: pointer to adapter cast into an unsigned long
4932 static void e1000_watchdog(unsigned long data
)
4934 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
4936 /* Do the rest outside of interrupt context */
4937 schedule_work(&adapter
->watchdog_task
);
4939 /* TODO: make this use queue_delayed_work() */
4942 static void e1000_watchdog_task(struct work_struct
*work
)
4944 struct e1000_adapter
*adapter
= container_of(work
,
4945 struct e1000_adapter
,
4947 struct net_device
*netdev
= adapter
->netdev
;
4948 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
4949 struct e1000_phy_info
*phy
= &adapter
->hw
.phy
;
4950 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4951 struct e1000_hw
*hw
= &adapter
->hw
;
4954 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4957 link
= e1000e_has_link(adapter
);
4958 if ((netif_carrier_ok(netdev
)) && link
) {
4959 /* Cancel scheduled suspend requests. */
4960 pm_runtime_resume(netdev
->dev
.parent
);
4962 e1000e_enable_receives(adapter
);
4966 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
4967 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
4968 e1000_update_mng_vlan(adapter
);
4971 if (!netif_carrier_ok(netdev
)) {
4974 /* Cancel scheduled suspend requests. */
4975 pm_runtime_resume(netdev
->dev
.parent
);
4977 /* update snapshot of PHY registers on LSC */
4978 e1000_phy_read_status(adapter
);
4979 mac
->ops
.get_link_up_info(&adapter
->hw
,
4980 &adapter
->link_speed
,
4981 &adapter
->link_duplex
);
4982 e1000_print_link_info(adapter
);
4984 /* check if SmartSpeed worked */
4985 e1000e_check_downshift(hw
);
4986 if (phy
->speed_downgraded
)
4988 "Link Speed was downgraded by SmartSpeed\n");
4990 /* On supported PHYs, check for duplex mismatch only
4991 * if link has autonegotiated at 10/100 half
4993 if ((hw
->phy
.type
== e1000_phy_igp_3
||
4994 hw
->phy
.type
== e1000_phy_bm
) &&
4996 (adapter
->link_speed
== SPEED_10
||
4997 adapter
->link_speed
== SPEED_100
) &&
4998 (adapter
->link_duplex
== HALF_DUPLEX
)) {
5001 e1e_rphy(hw
, MII_EXPANSION
, &autoneg_exp
);
5003 if (!(autoneg_exp
& EXPANSION_NWAY
))
5004 e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n");
5007 /* adjust timeout factor according to speed/duplex */
5008 adapter
->tx_timeout_factor
= 1;
5009 switch (adapter
->link_speed
) {
5012 adapter
->tx_timeout_factor
= 16;
5016 adapter
->tx_timeout_factor
= 10;
5020 /* workaround: re-program speed mode bit after
5023 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
5027 tarc0
= er32(TARC(0));
5028 tarc0
&= ~SPEED_MODE_BIT
;
5029 ew32(TARC(0), tarc0
);
5032 /* disable TSO for pcie and 10/100 speeds, to avoid
5033 * some hardware issues
5035 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
5036 switch (adapter
->link_speed
) {
5039 e_info("10/100 speed: disabling TSO\n");
5040 netdev
->features
&= ~NETIF_F_TSO
;
5041 netdev
->features
&= ~NETIF_F_TSO6
;
5044 netdev
->features
|= NETIF_F_TSO
;
5045 netdev
->features
|= NETIF_F_TSO6
;
5053 /* enable transmits in the hardware, need to do this
5054 * after setting TARC(0)
5057 tctl
|= E1000_TCTL_EN
;
5060 /* Perform any post-link-up configuration before
5061 * reporting link up.
5063 if (phy
->ops
.cfg_on_link_up
)
5064 phy
->ops
.cfg_on_link_up(hw
);
5066 netif_carrier_on(netdev
);
5068 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
5069 mod_timer(&adapter
->phy_info_timer
,
5070 round_jiffies(jiffies
+ 2 * HZ
));
5073 if (netif_carrier_ok(netdev
)) {
5074 adapter
->link_speed
= 0;
5075 adapter
->link_duplex
= 0;
5076 /* Link status message must follow this format */
5077 pr_info("%s NIC Link is Down\n", adapter
->netdev
->name
);
5078 netif_carrier_off(netdev
);
5079 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
5080 mod_timer(&adapter
->phy_info_timer
,
5081 round_jiffies(jiffies
+ 2 * HZ
));
5083 /* 8000ES2LAN requires a Rx packet buffer work-around
5084 * on link down event; reset the controller to flush
5085 * the Rx packet buffer.
5087 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
5088 adapter
->flags
|= FLAG_RESTART_NOW
;
5090 pm_schedule_suspend(netdev
->dev
.parent
,
5096 spin_lock(&adapter
->stats64_lock
);
5097 e1000e_update_stats(adapter
);
5099 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
5100 adapter
->tpt_old
= adapter
->stats
.tpt
;
5101 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
5102 adapter
->colc_old
= adapter
->stats
.colc
;
5104 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
5105 adapter
->gorc_old
= adapter
->stats
.gorc
;
5106 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
5107 adapter
->gotc_old
= adapter
->stats
.gotc
;
5108 spin_unlock(&adapter
->stats64_lock
);
5110 /* If the link is lost the controller stops DMA, but
5111 * if there is queued Tx work it cannot be done. So
5112 * reset the controller to flush the Tx packet buffers.
5114 if (!netif_carrier_ok(netdev
) &&
5115 (e1000_desc_unused(tx_ring
) + 1 < tx_ring
->count
))
5116 adapter
->flags
|= FLAG_RESTART_NOW
;
5118 /* If reset is necessary, do it outside of interrupt context. */
5119 if (adapter
->flags
& FLAG_RESTART_NOW
) {
5120 schedule_work(&adapter
->reset_task
);
5121 /* return immediately since reset is imminent */
5125 e1000e_update_adaptive(&adapter
->hw
);
5127 /* Simple mode for Interrupt Throttle Rate (ITR) */
5128 if (adapter
->itr_setting
== 4) {
5129 /* Symmetric Tx/Rx gets a reduced ITR=2000;
5130 * Total asymmetrical Tx or Rx gets ITR=8000;
5131 * everyone else is between 2000-8000.
5133 u32 goc
= (adapter
->gotc
+ adapter
->gorc
) / 10000;
5134 u32 dif
= (adapter
->gotc
> adapter
->gorc
?
5135 adapter
->gotc
- adapter
->gorc
:
5136 adapter
->gorc
- adapter
->gotc
) / 10000;
5137 u32 itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
5139 e1000e_write_itr(adapter
, itr
);
5142 /* Cause software interrupt to ensure Rx ring is cleaned */
5143 if (adapter
->msix_entries
)
5144 ew32(ICS
, adapter
->rx_ring
->ims_val
);
5146 ew32(ICS
, E1000_ICS_RXDMT0
);
5148 /* flush pending descriptors to memory before detecting Tx hang */
5149 e1000e_flush_descriptors(adapter
);
5151 /* Force detection of hung controller every watchdog period */
5152 adapter
->detect_tx_hung
= true;
5154 /* With 82571 controllers, LAA may be overwritten due to controller
5155 * reset from the other port. Set the appropriate LAA in RAR[0]
5157 if (e1000e_get_laa_state_82571(hw
))
5158 hw
->mac
.ops
.rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
5160 if (adapter
->flags2
& FLAG2_CHECK_PHY_HANG
)
5161 e1000e_check_82574_phy_workaround(adapter
);
5163 /* Clear valid timestamp stuck in RXSTMPL/H due to a Rx error */
5164 if (adapter
->hwtstamp_config
.rx_filter
!= HWTSTAMP_FILTER_NONE
) {
5165 if ((adapter
->flags2
& FLAG2_CHECK_RX_HWTSTAMP
) &&
5166 (er32(TSYNCRXCTL
) & E1000_TSYNCRXCTL_VALID
)) {
5168 adapter
->rx_hwtstamp_cleared
++;
5170 adapter
->flags2
|= FLAG2_CHECK_RX_HWTSTAMP
;
5174 /* Reset the timer */
5175 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
5176 mod_timer(&adapter
->watchdog_timer
,
5177 round_jiffies(jiffies
+ 2 * HZ
));
5180 #define E1000_TX_FLAGS_CSUM 0x00000001
5181 #define E1000_TX_FLAGS_VLAN 0x00000002
5182 #define E1000_TX_FLAGS_TSO 0x00000004
5183 #define E1000_TX_FLAGS_IPV4 0x00000008
5184 #define E1000_TX_FLAGS_NO_FCS 0x00000010
5185 #define E1000_TX_FLAGS_HWTSTAMP 0x00000020
5186 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
5187 #define E1000_TX_FLAGS_VLAN_SHIFT 16
5189 static int e1000_tso(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
,
5192 struct e1000_context_desc
*context_desc
;
5193 struct e1000_buffer
*buffer_info
;
5197 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
5200 if (!skb_is_gso(skb
))
5203 err
= skb_cow_head(skb
, 0);
5207 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
5208 mss
= skb_shinfo(skb
)->gso_size
;
5209 if (protocol
== htons(ETH_P_IP
)) {
5210 struct iphdr
*iph
= ip_hdr(skb
);
5213 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
, iph
->daddr
,
5215 cmd_length
= E1000_TXD_CMD_IP
;
5216 ipcse
= skb_transport_offset(skb
) - 1;
5217 } else if (skb_is_gso_v6(skb
)) {
5218 ipv6_hdr(skb
)->payload_len
= 0;
5219 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
5220 &ipv6_hdr(skb
)->daddr
,
5224 ipcss
= skb_network_offset(skb
);
5225 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
5226 tucss
= skb_transport_offset(skb
);
5227 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
5229 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
5230 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
5232 i
= tx_ring
->next_to_use
;
5233 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
5234 buffer_info
= &tx_ring
->buffer_info
[i
];
5236 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
5237 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
5238 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
5239 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
5240 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
5241 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
5242 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
5243 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
5244 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
5246 buffer_info
->time_stamp
= jiffies
;
5247 buffer_info
->next_to_watch
= i
;
5250 if (i
== tx_ring
->count
)
5252 tx_ring
->next_to_use
= i
;
5257 static bool e1000_tx_csum(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
,
5260 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
5261 struct e1000_context_desc
*context_desc
;
5262 struct e1000_buffer
*buffer_info
;
5265 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
5267 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
5271 case cpu_to_be16(ETH_P_IP
):
5272 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
5273 cmd_len
|= E1000_TXD_CMD_TCP
;
5275 case cpu_to_be16(ETH_P_IPV6
):
5276 /* XXX not handling all IPV6 headers */
5277 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
5278 cmd_len
|= E1000_TXD_CMD_TCP
;
5281 if (unlikely(net_ratelimit()))
5282 e_warn("checksum_partial proto=%x!\n",
5283 be16_to_cpu(protocol
));
5287 css
= skb_checksum_start_offset(skb
);
5289 i
= tx_ring
->next_to_use
;
5290 buffer_info
= &tx_ring
->buffer_info
[i
];
5291 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
5293 context_desc
->lower_setup
.ip_config
= 0;
5294 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
5295 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum_offset
;
5296 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
5297 context_desc
->tcp_seg_setup
.data
= 0;
5298 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
5300 buffer_info
->time_stamp
= jiffies
;
5301 buffer_info
->next_to_watch
= i
;
5304 if (i
== tx_ring
->count
)
5306 tx_ring
->next_to_use
= i
;
5311 static int e1000_tx_map(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
,
5312 unsigned int first
, unsigned int max_per_txd
,
5313 unsigned int nr_frags
)
5315 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
5316 struct pci_dev
*pdev
= adapter
->pdev
;
5317 struct e1000_buffer
*buffer_info
;
5318 unsigned int len
= skb_headlen(skb
);
5319 unsigned int offset
= 0, size
, count
= 0, i
;
5320 unsigned int f
, bytecount
, segs
;
5322 i
= tx_ring
->next_to_use
;
5325 buffer_info
= &tx_ring
->buffer_info
[i
];
5326 size
= min(len
, max_per_txd
);
5328 buffer_info
->length
= size
;
5329 buffer_info
->time_stamp
= jiffies
;
5330 buffer_info
->next_to_watch
= i
;
5331 buffer_info
->dma
= dma_map_single(&pdev
->dev
,
5333 size
, DMA_TO_DEVICE
);
5334 buffer_info
->mapped_as_page
= false;
5335 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
5344 if (i
== tx_ring
->count
)
5349 for (f
= 0; f
< nr_frags
; f
++) {
5350 const struct skb_frag_struct
*frag
;
5352 frag
= &skb_shinfo(skb
)->frags
[f
];
5353 len
= skb_frag_size(frag
);
5358 if (i
== tx_ring
->count
)
5361 buffer_info
= &tx_ring
->buffer_info
[i
];
5362 size
= min(len
, max_per_txd
);
5364 buffer_info
->length
= size
;
5365 buffer_info
->time_stamp
= jiffies
;
5366 buffer_info
->next_to_watch
= i
;
5367 buffer_info
->dma
= skb_frag_dma_map(&pdev
->dev
, frag
,
5370 buffer_info
->mapped_as_page
= true;
5371 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
5380 segs
= skb_shinfo(skb
)->gso_segs
? : 1;
5381 /* multiply data chunks by size of headers */
5382 bytecount
= ((segs
- 1) * skb_headlen(skb
)) + skb
->len
;
5384 tx_ring
->buffer_info
[i
].skb
= skb
;
5385 tx_ring
->buffer_info
[i
].segs
= segs
;
5386 tx_ring
->buffer_info
[i
].bytecount
= bytecount
;
5387 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
5392 dev_err(&pdev
->dev
, "Tx DMA map failed\n");
5393 buffer_info
->dma
= 0;
5399 i
+= tx_ring
->count
;
5401 buffer_info
= &tx_ring
->buffer_info
[i
];
5402 e1000_put_txbuf(tx_ring
, buffer_info
);
5408 static void e1000_tx_queue(struct e1000_ring
*tx_ring
, int tx_flags
, int count
)
5410 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
5411 struct e1000_tx_desc
*tx_desc
= NULL
;
5412 struct e1000_buffer
*buffer_info
;
5413 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
5416 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
5417 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
5419 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
5421 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
5422 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
5425 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
5426 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
5427 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
5430 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
5431 txd_lower
|= E1000_TXD_CMD_VLE
;
5432 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
5435 if (unlikely(tx_flags
& E1000_TX_FLAGS_NO_FCS
))
5436 txd_lower
&= ~(E1000_TXD_CMD_IFCS
);
5438 if (unlikely(tx_flags
& E1000_TX_FLAGS_HWTSTAMP
)) {
5439 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
5440 txd_upper
|= E1000_TXD_EXTCMD_TSTAMP
;
5443 i
= tx_ring
->next_to_use
;
5446 buffer_info
= &tx_ring
->buffer_info
[i
];
5447 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
5448 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
5449 tx_desc
->lower
.data
= cpu_to_le32(txd_lower
|
5450 buffer_info
->length
);
5451 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
5454 if (i
== tx_ring
->count
)
5456 } while (--count
> 0);
5458 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
5460 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */
5461 if (unlikely(tx_flags
& E1000_TX_FLAGS_NO_FCS
))
5462 tx_desc
->lower
.data
&= ~(cpu_to_le32(E1000_TXD_CMD_IFCS
));
5464 /* Force memory writes to complete before letting h/w
5465 * know there are new descriptors to fetch. (Only
5466 * applicable for weak-ordered memory model archs,
5471 tx_ring
->next_to_use
= i
;
5474 #define MINIMUM_DHCP_PACKET_SIZE 282
5475 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
5476 struct sk_buff
*skb
)
5478 struct e1000_hw
*hw
= &adapter
->hw
;
5481 if (skb_vlan_tag_present(skb
) &&
5482 !((skb_vlan_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
5483 (adapter
->hw
.mng_cookie
.status
&
5484 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
5487 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
5490 if (((struct ethhdr
*)skb
->data
)->h_proto
!= htons(ETH_P_IP
))
5494 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+ 14);
5497 if (ip
->protocol
!= IPPROTO_UDP
)
5500 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
5501 if (ntohs(udp
->dest
) != 67)
5504 offset
= (u8
*)udp
+ 8 - skb
->data
;
5505 length
= skb
->len
- offset
;
5506 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
5512 static int __e1000_maybe_stop_tx(struct e1000_ring
*tx_ring
, int size
)
5514 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
5516 netif_stop_queue(adapter
->netdev
);
5517 /* Herbert's original patch had:
5518 * smp_mb__after_netif_stop_queue();
5519 * but since that doesn't exist yet, just open code it.
5523 /* We need to check again in a case another CPU has just
5524 * made room available.
5526 if (e1000_desc_unused(tx_ring
) < size
)
5530 netif_start_queue(adapter
->netdev
);
5531 ++adapter
->restart_queue
;
5535 static int e1000_maybe_stop_tx(struct e1000_ring
*tx_ring
, int size
)
5537 BUG_ON(size
> tx_ring
->count
);
5539 if (e1000_desc_unused(tx_ring
) >= size
)
5541 return __e1000_maybe_stop_tx(tx_ring
, size
);
5544 static netdev_tx_t
e1000_xmit_frame(struct sk_buff
*skb
,
5545 struct net_device
*netdev
)
5547 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5548 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
5550 unsigned int tx_flags
= 0;
5551 unsigned int len
= skb_headlen(skb
);
5552 unsigned int nr_frags
;
5557 __be16 protocol
= vlan_get_protocol(skb
);
5559 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
5560 dev_kfree_skb_any(skb
);
5561 return NETDEV_TX_OK
;
5564 if (skb
->len
<= 0) {
5565 dev_kfree_skb_any(skb
);
5566 return NETDEV_TX_OK
;
5569 /* The minimum packet size with TCTL.PSP set is 17 bytes so
5570 * pad skb in order to meet this minimum size requirement
5572 if (skb_put_padto(skb
, 17))
5573 return NETDEV_TX_OK
;
5575 mss
= skb_shinfo(skb
)->gso_size
;
5579 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
5580 * points to just header, pull a few bytes of payload from
5581 * frags into skb->data
5583 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
5584 /* we do this workaround for ES2LAN, but it is un-necessary,
5585 * avoiding it could save a lot of cycles
5587 if (skb
->data_len
&& (hdr_len
== len
)) {
5588 unsigned int pull_size
;
5590 pull_size
= min_t(unsigned int, 4, skb
->data_len
);
5591 if (!__pskb_pull_tail(skb
, pull_size
)) {
5592 e_err("__pskb_pull_tail failed.\n");
5593 dev_kfree_skb_any(skb
);
5594 return NETDEV_TX_OK
;
5596 len
= skb_headlen(skb
);
5600 /* reserve a descriptor for the offload context */
5601 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
5605 count
+= DIV_ROUND_UP(len
, adapter
->tx_fifo_limit
);
5607 nr_frags
= skb_shinfo(skb
)->nr_frags
;
5608 for (f
= 0; f
< nr_frags
; f
++)
5609 count
+= DIV_ROUND_UP(skb_frag_size(&skb_shinfo(skb
)->frags
[f
]),
5610 adapter
->tx_fifo_limit
);
5612 if (adapter
->hw
.mac
.tx_pkt_filtering
)
5613 e1000_transfer_dhcp_info(adapter
, skb
);
5615 /* need: count + 2 desc gap to keep tail from touching
5616 * head, otherwise try next time
5618 if (e1000_maybe_stop_tx(tx_ring
, count
+ 2))
5619 return NETDEV_TX_BUSY
;
5621 if (skb_vlan_tag_present(skb
)) {
5622 tx_flags
|= E1000_TX_FLAGS_VLAN
;
5623 tx_flags
|= (skb_vlan_tag_get(skb
) <<
5624 E1000_TX_FLAGS_VLAN_SHIFT
);
5627 first
= tx_ring
->next_to_use
;
5629 tso
= e1000_tso(tx_ring
, skb
, protocol
);
5631 dev_kfree_skb_any(skb
);
5632 return NETDEV_TX_OK
;
5636 tx_flags
|= E1000_TX_FLAGS_TSO
;
5637 else if (e1000_tx_csum(tx_ring
, skb
, protocol
))
5638 tx_flags
|= E1000_TX_FLAGS_CSUM
;
5640 /* Old method was to assume IPv4 packet by default if TSO was enabled.
5641 * 82571 hardware supports TSO capabilities for IPv6 as well...
5642 * no longer assume, we must.
5644 if (protocol
== htons(ETH_P_IP
))
5645 tx_flags
|= E1000_TX_FLAGS_IPV4
;
5647 if (unlikely(skb
->no_fcs
))
5648 tx_flags
|= E1000_TX_FLAGS_NO_FCS
;
5650 /* if count is 0 then mapping error has occurred */
5651 count
= e1000_tx_map(tx_ring
, skb
, first
, adapter
->tx_fifo_limit
,
5654 if (unlikely(skb_shinfo(skb
)->tx_flags
& SKBTX_HW_TSTAMP
) &&
5655 (adapter
->flags
& FLAG_HAS_HW_TIMESTAMP
) &&
5656 !adapter
->tx_hwtstamp_skb
) {
5657 skb_shinfo(skb
)->tx_flags
|= SKBTX_IN_PROGRESS
;
5658 tx_flags
|= E1000_TX_FLAGS_HWTSTAMP
;
5659 adapter
->tx_hwtstamp_skb
= skb_get(skb
);
5660 adapter
->tx_hwtstamp_start
= jiffies
;
5661 schedule_work(&adapter
->tx_hwtstamp_work
);
5663 skb_tx_timestamp(skb
);
5666 netdev_sent_queue(netdev
, skb
->len
);
5667 e1000_tx_queue(tx_ring
, tx_flags
, count
);
5668 /* Make sure there is space in the ring for the next send. */
5669 e1000_maybe_stop_tx(tx_ring
,
5671 DIV_ROUND_UP(PAGE_SIZE
,
5672 adapter
->tx_fifo_limit
) + 2));
5674 if (!skb
->xmit_more
||
5675 netif_xmit_stopped(netdev_get_tx_queue(netdev
, 0))) {
5676 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
5677 e1000e_update_tdt_wa(tx_ring
,
5678 tx_ring
->next_to_use
);
5680 writel(tx_ring
->next_to_use
, tx_ring
->tail
);
5682 /* we need this if more than one processor can write
5683 * to our tail at a time, it synchronizes IO on
5689 dev_kfree_skb_any(skb
);
5690 tx_ring
->buffer_info
[first
].time_stamp
= 0;
5691 tx_ring
->next_to_use
= first
;
5694 return NETDEV_TX_OK
;
5698 * e1000_tx_timeout - Respond to a Tx Hang
5699 * @netdev: network interface device structure
5701 static void e1000_tx_timeout(struct net_device
*netdev
)
5703 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5705 /* Do the reset outside of interrupt context */
5706 adapter
->tx_timeout_count
++;
5707 schedule_work(&adapter
->reset_task
);
5710 static void e1000_reset_task(struct work_struct
*work
)
5712 struct e1000_adapter
*adapter
;
5713 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
5715 /* don't run the task if already down */
5716 if (test_bit(__E1000_DOWN
, &adapter
->state
))
5719 if (!(adapter
->flags
& FLAG_RESTART_NOW
)) {
5720 e1000e_dump(adapter
);
5721 e_err("Reset adapter unexpectedly\n");
5723 e1000e_reinit_locked(adapter
);
5727 * e1000_get_stats64 - Get System Network Statistics
5728 * @netdev: network interface device structure
5729 * @stats: rtnl_link_stats64 pointer
5731 * Returns the address of the device statistics structure.
5733 struct rtnl_link_stats64
*e1000e_get_stats64(struct net_device
*netdev
,
5734 struct rtnl_link_stats64
*stats
)
5736 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5738 memset(stats
, 0, sizeof(struct rtnl_link_stats64
));
5739 spin_lock(&adapter
->stats64_lock
);
5740 e1000e_update_stats(adapter
);
5741 /* Fill out the OS statistics structure */
5742 stats
->rx_bytes
= adapter
->stats
.gorc
;
5743 stats
->rx_packets
= adapter
->stats
.gprc
;
5744 stats
->tx_bytes
= adapter
->stats
.gotc
;
5745 stats
->tx_packets
= adapter
->stats
.gptc
;
5746 stats
->multicast
= adapter
->stats
.mprc
;
5747 stats
->collisions
= adapter
->stats
.colc
;
5751 /* RLEC on some newer hardware can be incorrect so build
5752 * our own version based on RUC and ROC
5754 stats
->rx_errors
= adapter
->stats
.rxerrc
+
5755 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
5756 adapter
->stats
.ruc
+ adapter
->stats
.roc
+ adapter
->stats
.cexterr
;
5757 stats
->rx_length_errors
= adapter
->stats
.ruc
+ adapter
->stats
.roc
;
5758 stats
->rx_crc_errors
= adapter
->stats
.crcerrs
;
5759 stats
->rx_frame_errors
= adapter
->stats
.algnerrc
;
5760 stats
->rx_missed_errors
= adapter
->stats
.mpc
;
5763 stats
->tx_errors
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
5764 stats
->tx_aborted_errors
= adapter
->stats
.ecol
;
5765 stats
->tx_window_errors
= adapter
->stats
.latecol
;
5766 stats
->tx_carrier_errors
= adapter
->stats
.tncrs
;
5768 /* Tx Dropped needs to be maintained elsewhere */
5770 spin_unlock(&adapter
->stats64_lock
);
5775 * e1000_change_mtu - Change the Maximum Transfer Unit
5776 * @netdev: network interface device structure
5777 * @new_mtu: new value for maximum frame size
5779 * Returns 0 on success, negative on failure
5781 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
5783 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5784 int max_frame
= new_mtu
+ VLAN_HLEN
+ ETH_HLEN
+ ETH_FCS_LEN
;
5786 /* Jumbo frame support */
5787 if ((max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) &&
5788 !(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
5789 e_err("Jumbo Frames not supported.\n");
5793 /* Supported frame sizes */
5794 if ((new_mtu
< ETH_ZLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
) ||
5795 (max_frame
> adapter
->max_hw_frame_size
)) {
5796 e_err("Unsupported MTU setting\n");
5800 /* Jumbo frame workaround on 82579 and newer requires CRC be stripped */
5801 if ((adapter
->hw
.mac
.type
>= e1000_pch2lan
) &&
5802 !(adapter
->flags2
& FLAG2_CRC_STRIPPING
) &&
5803 (new_mtu
> ETH_DATA_LEN
)) {
5804 e_err("Jumbo Frames not supported on this device when CRC stripping is disabled.\n");
5808 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
5809 usleep_range(1000, 2000);
5810 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
5811 adapter
->max_frame_size
= max_frame
;
5812 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
5813 netdev
->mtu
= new_mtu
;
5815 pm_runtime_get_sync(netdev
->dev
.parent
);
5817 if (netif_running(netdev
))
5818 e1000e_down(adapter
, true);
5820 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
5821 * means we reserve 2 more, this pushes us to allocate from the next
5823 * i.e. RXBUFFER_2048 --> size-4096 slab
5824 * However with the new *_jumbo_rx* routines, jumbo receives will use
5828 if (max_frame
<= 2048)
5829 adapter
->rx_buffer_len
= 2048;
5831 adapter
->rx_buffer_len
= 4096;
5833 /* adjust allocation if LPE protects us, and we aren't using SBP */
5834 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
5835 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
5836 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
5839 if (netif_running(netdev
))
5842 e1000e_reset(adapter
);
5844 pm_runtime_put_sync(netdev
->dev
.parent
);
5846 clear_bit(__E1000_RESETTING
, &adapter
->state
);
5851 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
5854 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5855 struct mii_ioctl_data
*data
= if_mii(ifr
);
5857 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
5862 data
->phy_id
= adapter
->hw
.phy
.addr
;
5865 e1000_phy_read_status(adapter
);
5867 switch (data
->reg_num
& 0x1F) {
5869 data
->val_out
= adapter
->phy_regs
.bmcr
;
5872 data
->val_out
= adapter
->phy_regs
.bmsr
;
5875 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
5878 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
5881 data
->val_out
= adapter
->phy_regs
.advertise
;
5884 data
->val_out
= adapter
->phy_regs
.lpa
;
5887 data
->val_out
= adapter
->phy_regs
.expansion
;
5890 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
5893 data
->val_out
= adapter
->phy_regs
.stat1000
;
5896 data
->val_out
= adapter
->phy_regs
.estatus
;
5910 * e1000e_hwtstamp_ioctl - control hardware time stamping
5911 * @netdev: network interface device structure
5912 * @ifreq: interface request
5914 * Outgoing time stamping can be enabled and disabled. Play nice and
5915 * disable it when requested, although it shouldn't cause any overhead
5916 * when no packet needs it. At most one packet in the queue may be
5917 * marked for time stamping, otherwise it would be impossible to tell
5918 * for sure to which packet the hardware time stamp belongs.
5920 * Incoming time stamping has to be configured via the hardware filters.
5921 * Not all combinations are supported, in particular event type has to be
5922 * specified. Matching the kind of event packet is not supported, with the
5923 * exception of "all V2 events regardless of level 2 or 4".
5925 static int e1000e_hwtstamp_set(struct net_device
*netdev
, struct ifreq
*ifr
)
5927 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5928 struct hwtstamp_config config
;
5931 if (copy_from_user(&config
, ifr
->ifr_data
, sizeof(config
)))
5934 ret_val
= e1000e_config_hwtstamp(adapter
, &config
);
5938 switch (config
.rx_filter
) {
5939 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC
:
5940 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC
:
5941 case HWTSTAMP_FILTER_PTP_V2_SYNC
:
5942 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ
:
5943 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ
:
5944 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ
:
5945 /* With V2 type filters which specify a Sync or Delay Request,
5946 * Path Delay Request/Response messages are also time stamped
5947 * by hardware so notify the caller the requested packets plus
5948 * some others are time stamped.
5950 config
.rx_filter
= HWTSTAMP_FILTER_SOME
;
5956 return copy_to_user(ifr
->ifr_data
, &config
,
5957 sizeof(config
)) ? -EFAULT
: 0;
5960 static int e1000e_hwtstamp_get(struct net_device
*netdev
, struct ifreq
*ifr
)
5962 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5964 return copy_to_user(ifr
->ifr_data
, &adapter
->hwtstamp_config
,
5965 sizeof(adapter
->hwtstamp_config
)) ? -EFAULT
: 0;
5968 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
5974 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
5976 return e1000e_hwtstamp_set(netdev
, ifr
);
5978 return e1000e_hwtstamp_get(netdev
, ifr
);
5984 static int e1000_init_phy_wakeup(struct e1000_adapter
*adapter
, u32 wufc
)
5986 struct e1000_hw
*hw
= &adapter
->hw
;
5987 u32 i
, mac_reg
, wuc
;
5988 u16 phy_reg
, wuc_enable
;
5991 /* copy MAC RARs to PHY RARs */
5992 e1000_copy_rx_addrs_to_phy_ich8lan(hw
);
5994 retval
= hw
->phy
.ops
.acquire(hw
);
5996 e_err("Could not acquire PHY\n");
6000 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */
6001 retval
= e1000_enable_phy_wakeup_reg_access_bm(hw
, &wuc_enable
);
6005 /* copy MAC MTA to PHY MTA - only needed for pchlan */
6006 for (i
= 0; i
< adapter
->hw
.mac
.mta_reg_count
; i
++) {
6007 mac_reg
= E1000_READ_REG_ARRAY(hw
, E1000_MTA
, i
);
6008 hw
->phy
.ops
.write_reg_page(hw
, BM_MTA(i
),
6009 (u16
)(mac_reg
& 0xFFFF));
6010 hw
->phy
.ops
.write_reg_page(hw
, BM_MTA(i
) + 1,
6011 (u16
)((mac_reg
>> 16) & 0xFFFF));
6014 /* configure PHY Rx Control register */
6015 hw
->phy
.ops
.read_reg_page(&adapter
->hw
, BM_RCTL
, &phy_reg
);
6016 mac_reg
= er32(RCTL
);
6017 if (mac_reg
& E1000_RCTL_UPE
)
6018 phy_reg
|= BM_RCTL_UPE
;
6019 if (mac_reg
& E1000_RCTL_MPE
)
6020 phy_reg
|= BM_RCTL_MPE
;
6021 phy_reg
&= ~(BM_RCTL_MO_MASK
);
6022 if (mac_reg
& E1000_RCTL_MO_3
)
6023 phy_reg
|= (((mac_reg
& E1000_RCTL_MO_3
) >> E1000_RCTL_MO_SHIFT
)
6024 << BM_RCTL_MO_SHIFT
);
6025 if (mac_reg
& E1000_RCTL_BAM
)
6026 phy_reg
|= BM_RCTL_BAM
;
6027 if (mac_reg
& E1000_RCTL_PMCF
)
6028 phy_reg
|= BM_RCTL_PMCF
;
6029 mac_reg
= er32(CTRL
);
6030 if (mac_reg
& E1000_CTRL_RFCE
)
6031 phy_reg
|= BM_RCTL_RFCE
;
6032 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_RCTL
, phy_reg
);
6034 wuc
= E1000_WUC_PME_EN
;
6035 if (wufc
& (E1000_WUFC_MAG
| E1000_WUFC_LNKC
))
6036 wuc
|= E1000_WUC_APME
;
6038 /* enable PHY wakeup in MAC register */
6040 ew32(WUC
, (E1000_WUC_PHY_WAKE
| E1000_WUC_APMPME
|
6041 E1000_WUC_PME_STATUS
| wuc
));
6043 /* configure and enable PHY wakeup in PHY registers */
6044 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_WUFC
, wufc
);
6045 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_WUC
, wuc
);
6047 /* activate PHY wakeup */
6048 wuc_enable
|= BM_WUC_ENABLE_BIT
| BM_WUC_HOST_WU_BIT
;
6049 retval
= e1000_disable_phy_wakeup_reg_access_bm(hw
, &wuc_enable
);
6051 e_err("Could not set PHY Host Wakeup bit\n");
6053 hw
->phy
.ops
.release(hw
);
6058 static void e1000e_flush_lpic(struct pci_dev
*pdev
)
6060 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6061 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6062 struct e1000_hw
*hw
= &adapter
->hw
;
6065 pm_runtime_get_sync(netdev
->dev
.parent
);
6067 ret_val
= hw
->phy
.ops
.acquire(hw
);
6071 pr_info("EEE TX LPI TIMER: %08X\n",
6072 er32(LPIC
) >> E1000_LPIC_LPIET_SHIFT
);
6074 hw
->phy
.ops
.release(hw
);
6077 pm_runtime_put_sync(netdev
->dev
.parent
);
6080 static int e1000e_pm_freeze(struct device
*dev
)
6082 struct net_device
*netdev
= pci_get_drvdata(to_pci_dev(dev
));
6083 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6085 netif_device_detach(netdev
);
6087 if (netif_running(netdev
)) {
6088 int count
= E1000_CHECK_RESET_COUNT
;
6090 while (test_bit(__E1000_RESETTING
, &adapter
->state
) && count
--)
6091 usleep_range(10000, 20000);
6093 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
6095 /* Quiesce the device without resetting the hardware */
6096 e1000e_down(adapter
, false);
6097 e1000_free_irq(adapter
);
6099 e1000e_reset_interrupt_capability(adapter
);
6101 /* Allow time for pending master requests to run */
6102 e1000e_disable_pcie_master(&adapter
->hw
);
6107 static int __e1000_shutdown(struct pci_dev
*pdev
, bool runtime
)
6109 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6110 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6111 struct e1000_hw
*hw
= &adapter
->hw
;
6112 u32 ctrl
, ctrl_ext
, rctl
, status
;
6113 /* Runtime suspend should only enable wakeup for link changes */
6114 u32 wufc
= runtime
? E1000_WUFC_LNKC
: adapter
->wol
;
6117 status
= er32(STATUS
);
6118 if (status
& E1000_STATUS_LU
)
6119 wufc
&= ~E1000_WUFC_LNKC
;
6122 e1000_setup_rctl(adapter
);
6123 e1000e_set_rx_mode(netdev
);
6125 /* turn on all-multi mode if wake on multicast is enabled */
6126 if (wufc
& E1000_WUFC_MC
) {
6128 rctl
|= E1000_RCTL_MPE
;
6133 ctrl
|= E1000_CTRL_ADVD3WUC
;
6134 if (!(adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
))
6135 ctrl
|= E1000_CTRL_EN_PHY_PWR_MGMT
;
6138 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
6139 adapter
->hw
.phy
.media_type
==
6140 e1000_media_type_internal_serdes
) {
6141 /* keep the laser running in D3 */
6142 ctrl_ext
= er32(CTRL_EXT
);
6143 ctrl_ext
|= E1000_CTRL_EXT_SDP3_DATA
;
6144 ew32(CTRL_EXT
, ctrl_ext
);
6148 e1000e_power_up_phy(adapter
);
6150 if (adapter
->flags
& FLAG_IS_ICH
)
6151 e1000_suspend_workarounds_ich8lan(&adapter
->hw
);
6153 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
6154 /* enable wakeup by the PHY */
6155 retval
= e1000_init_phy_wakeup(adapter
, wufc
);
6159 /* enable wakeup by the MAC */
6161 ew32(WUC
, E1000_WUC_PME_EN
);
6167 e1000_power_down_phy(adapter
);
6170 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
) {
6171 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
6172 } else if ((hw
->mac
.type
== e1000_pch_lpt
) ||
6173 (hw
->mac
.type
== e1000_pch_spt
)) {
6174 if (!(wufc
& (E1000_WUFC_EX
| E1000_WUFC_MC
| E1000_WUFC_BC
)))
6175 /* ULP does not support wake from unicast, multicast
6178 retval
= e1000_enable_ulp_lpt_lp(hw
, !runtime
);
6185 /* Release control of h/w to f/w. If f/w is AMT enabled, this
6186 * would have already happened in close and is redundant.
6188 e1000e_release_hw_control(adapter
);
6190 pci_clear_master(pdev
);
6192 /* The pci-e switch on some quad port adapters will report a
6193 * correctable error when the MAC transitions from D0 to D3. To
6194 * prevent this we need to mask off the correctable errors on the
6195 * downstream port of the pci-e switch.
6197 * We don't have the associated upstream bridge while assigning
6198 * the PCI device into guest. For example, the KVM on power is
6201 if (adapter
->flags
& FLAG_IS_QUAD_PORT
) {
6202 struct pci_dev
*us_dev
= pdev
->bus
->self
;
6208 pcie_capability_read_word(us_dev
, PCI_EXP_DEVCTL
, &devctl
);
6209 pcie_capability_write_word(us_dev
, PCI_EXP_DEVCTL
,
6210 (devctl
& ~PCI_EXP_DEVCTL_CERE
));
6212 pci_save_state(pdev
);
6213 pci_prepare_to_sleep(pdev
);
6215 pcie_capability_write_word(us_dev
, PCI_EXP_DEVCTL
, devctl
);
6222 * e1000e_disable_aspm - Disable ASPM states
6223 * @pdev: pointer to PCI device struct
6224 * @state: bit-mask of ASPM states to disable
6226 * Some devices *must* have certain ASPM states disabled per hardware errata.
6228 static void e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
6230 struct pci_dev
*parent
= pdev
->bus
->self
;
6231 u16 aspm_dis_mask
= 0;
6232 u16 pdev_aspmc
, parent_aspmc
;
6235 case PCIE_LINK_STATE_L0S
:
6236 case PCIE_LINK_STATE_L0S
| PCIE_LINK_STATE_L1
:
6237 aspm_dis_mask
|= PCI_EXP_LNKCTL_ASPM_L0S
;
6238 /* fall-through - can't have L1 without L0s */
6239 case PCIE_LINK_STATE_L1
:
6240 aspm_dis_mask
|= PCI_EXP_LNKCTL_ASPM_L1
;
6246 pcie_capability_read_word(pdev
, PCI_EXP_LNKCTL
, &pdev_aspmc
);
6247 pdev_aspmc
&= PCI_EXP_LNKCTL_ASPMC
;
6250 pcie_capability_read_word(parent
, PCI_EXP_LNKCTL
,
6252 parent_aspmc
&= PCI_EXP_LNKCTL_ASPMC
;
6255 /* Nothing to do if the ASPM states to be disabled already are */
6256 if (!(pdev_aspmc
& aspm_dis_mask
) &&
6257 (!parent
|| !(parent_aspmc
& aspm_dis_mask
)))
6260 dev_info(&pdev
->dev
, "Disabling ASPM %s %s\n",
6261 (aspm_dis_mask
& pdev_aspmc
& PCI_EXP_LNKCTL_ASPM_L0S
) ?
6263 (aspm_dis_mask
& pdev_aspmc
& PCI_EXP_LNKCTL_ASPM_L1
) ?
6266 #ifdef CONFIG_PCIEASPM
6267 pci_disable_link_state_locked(pdev
, state
);
6269 /* Double-check ASPM control. If not disabled by the above, the
6270 * BIOS is preventing that from happening (or CONFIG_PCIEASPM is
6271 * not enabled); override by writing PCI config space directly.
6273 pcie_capability_read_word(pdev
, PCI_EXP_LNKCTL
, &pdev_aspmc
);
6274 pdev_aspmc
&= PCI_EXP_LNKCTL_ASPMC
;
6276 if (!(aspm_dis_mask
& pdev_aspmc
))
6280 /* Both device and parent should have the same ASPM setting.
6281 * Disable ASPM in downstream component first and then upstream.
6283 pcie_capability_clear_word(pdev
, PCI_EXP_LNKCTL
, aspm_dis_mask
);
6286 pcie_capability_clear_word(parent
, PCI_EXP_LNKCTL
,
6291 static int __e1000_resume(struct pci_dev
*pdev
)
6293 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6294 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6295 struct e1000_hw
*hw
= &adapter
->hw
;
6296 u16 aspm_disable_flag
= 0;
6298 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
6299 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
6300 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
6301 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
6302 if (aspm_disable_flag
)
6303 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
6305 pci_set_master(pdev
);
6307 if (hw
->mac
.type
>= e1000_pch2lan
)
6308 e1000_resume_workarounds_pchlan(&adapter
->hw
);
6310 e1000e_power_up_phy(adapter
);
6312 /* report the system wakeup cause from S3/S4 */
6313 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
6316 e1e_rphy(&adapter
->hw
, BM_WUS
, &phy_data
);
6318 e_info("PHY Wakeup cause - %s\n",
6319 phy_data
& E1000_WUS_EX
? "Unicast Packet" :
6320 phy_data
& E1000_WUS_MC
? "Multicast Packet" :
6321 phy_data
& E1000_WUS_BC
? "Broadcast Packet" :
6322 phy_data
& E1000_WUS_MAG
? "Magic Packet" :
6323 phy_data
& E1000_WUS_LNKC
?
6324 "Link Status Change" : "other");
6326 e1e_wphy(&adapter
->hw
, BM_WUS
, ~0);
6328 u32 wus
= er32(WUS
);
6331 e_info("MAC Wakeup cause - %s\n",
6332 wus
& E1000_WUS_EX
? "Unicast Packet" :
6333 wus
& E1000_WUS_MC
? "Multicast Packet" :
6334 wus
& E1000_WUS_BC
? "Broadcast Packet" :
6335 wus
& E1000_WUS_MAG
? "Magic Packet" :
6336 wus
& E1000_WUS_LNKC
? "Link Status Change" :
6342 e1000e_reset(adapter
);
6344 e1000_init_manageability_pt(adapter
);
6346 /* If the controller has AMT, do not set DRV_LOAD until the interface
6347 * is up. For all other cases, let the f/w know that the h/w is now
6348 * under the control of the driver.
6350 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6351 e1000e_get_hw_control(adapter
);
6356 #ifdef CONFIG_PM_SLEEP
6357 static int e1000e_pm_thaw(struct device
*dev
)
6359 struct net_device
*netdev
= pci_get_drvdata(to_pci_dev(dev
));
6360 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6362 e1000e_set_interrupt_capability(adapter
);
6363 if (netif_running(netdev
)) {
6364 u32 err
= e1000_request_irq(adapter
);
6372 netif_device_attach(netdev
);
6377 static int e1000e_pm_suspend(struct device
*dev
)
6379 struct pci_dev
*pdev
= to_pci_dev(dev
);
6381 e1000e_flush_lpic(pdev
);
6383 e1000e_pm_freeze(dev
);
6385 return __e1000_shutdown(pdev
, false);
6388 static int e1000e_pm_resume(struct device
*dev
)
6390 struct pci_dev
*pdev
= to_pci_dev(dev
);
6393 rc
= __e1000_resume(pdev
);
6397 return e1000e_pm_thaw(dev
);
6399 #endif /* CONFIG_PM_SLEEP */
6401 static int e1000e_pm_runtime_idle(struct device
*dev
)
6403 struct pci_dev
*pdev
= to_pci_dev(dev
);
6404 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6405 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6408 eee_lp
= adapter
->hw
.dev_spec
.ich8lan
.eee_lp_ability
;
6410 if (!e1000e_has_link(adapter
)) {
6411 adapter
->hw
.dev_spec
.ich8lan
.eee_lp_ability
= eee_lp
;
6412 pm_schedule_suspend(dev
, 5 * MSEC_PER_SEC
);
6418 static int e1000e_pm_runtime_resume(struct device
*dev
)
6420 struct pci_dev
*pdev
= to_pci_dev(dev
);
6421 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6422 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6425 rc
= __e1000_resume(pdev
);
6429 if (netdev
->flags
& IFF_UP
)
6430 rc
= e1000e_up(adapter
);
6435 static int e1000e_pm_runtime_suspend(struct device
*dev
)
6437 struct pci_dev
*pdev
= to_pci_dev(dev
);
6438 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6439 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6441 if (netdev
->flags
& IFF_UP
) {
6442 int count
= E1000_CHECK_RESET_COUNT
;
6444 while (test_bit(__E1000_RESETTING
, &adapter
->state
) && count
--)
6445 usleep_range(10000, 20000);
6447 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
6449 /* Down the device without resetting the hardware */
6450 e1000e_down(adapter
, false);
6453 if (__e1000_shutdown(pdev
, true)) {
6454 e1000e_pm_runtime_resume(dev
);
6460 #endif /* CONFIG_PM */
6462 static void e1000_shutdown(struct pci_dev
*pdev
)
6464 e1000e_flush_lpic(pdev
);
6466 e1000e_pm_freeze(&pdev
->dev
);
6468 __e1000_shutdown(pdev
, false);
6471 #ifdef CONFIG_NET_POLL_CONTROLLER
6473 static irqreturn_t
e1000_intr_msix(int __always_unused irq
, void *data
)
6475 struct net_device
*netdev
= data
;
6476 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6478 if (adapter
->msix_entries
) {
6479 int vector
, msix_irq
;
6482 msix_irq
= adapter
->msix_entries
[vector
].vector
;
6483 disable_irq(msix_irq
);
6484 e1000_intr_msix_rx(msix_irq
, netdev
);
6485 enable_irq(msix_irq
);
6488 msix_irq
= adapter
->msix_entries
[vector
].vector
;
6489 disable_irq(msix_irq
);
6490 e1000_intr_msix_tx(msix_irq
, netdev
);
6491 enable_irq(msix_irq
);
6494 msix_irq
= adapter
->msix_entries
[vector
].vector
;
6495 disable_irq(msix_irq
);
6496 e1000_msix_other(msix_irq
, netdev
);
6497 enable_irq(msix_irq
);
6505 * @netdev: network interface device structure
6507 * Polling 'interrupt' - used by things like netconsole to send skbs
6508 * without having to re-enable interrupts. It's not called while
6509 * the interrupt routine is executing.
6511 static void e1000_netpoll(struct net_device
*netdev
)
6513 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6515 switch (adapter
->int_mode
) {
6516 case E1000E_INT_MODE_MSIX
:
6517 e1000_intr_msix(adapter
->pdev
->irq
, netdev
);
6519 case E1000E_INT_MODE_MSI
:
6520 disable_irq(adapter
->pdev
->irq
);
6521 e1000_intr_msi(adapter
->pdev
->irq
, netdev
);
6522 enable_irq(adapter
->pdev
->irq
);
6524 default: /* E1000E_INT_MODE_LEGACY */
6525 disable_irq(adapter
->pdev
->irq
);
6526 e1000_intr(adapter
->pdev
->irq
, netdev
);
6527 enable_irq(adapter
->pdev
->irq
);
6534 * e1000_io_error_detected - called when PCI error is detected
6535 * @pdev: Pointer to PCI device
6536 * @state: The current pci connection state
6538 * This function is called after a PCI bus error affecting
6539 * this device has been detected.
6541 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
6542 pci_channel_state_t state
)
6544 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6545 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6547 netif_device_detach(netdev
);
6549 if (state
== pci_channel_io_perm_failure
)
6550 return PCI_ERS_RESULT_DISCONNECT
;
6552 if (netif_running(netdev
))
6553 e1000e_down(adapter
, true);
6554 pci_disable_device(pdev
);
6556 /* Request a slot slot reset. */
6557 return PCI_ERS_RESULT_NEED_RESET
;
6561 * e1000_io_slot_reset - called after the pci bus has been reset.
6562 * @pdev: Pointer to PCI device
6564 * Restart the card from scratch, as if from a cold-boot. Implementation
6565 * resembles the first-half of the e1000e_pm_resume routine.
6567 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
6569 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6570 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6571 struct e1000_hw
*hw
= &adapter
->hw
;
6572 u16 aspm_disable_flag
= 0;
6574 pci_ers_result_t result
;
6576 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
6577 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
6578 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
6579 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
6580 if (aspm_disable_flag
)
6581 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
6583 err
= pci_enable_device_mem(pdev
);
6586 "Cannot re-enable PCI device after reset.\n");
6587 result
= PCI_ERS_RESULT_DISCONNECT
;
6589 pdev
->state_saved
= true;
6590 pci_restore_state(pdev
);
6591 pci_set_master(pdev
);
6593 pci_enable_wake(pdev
, PCI_D3hot
, 0);
6594 pci_enable_wake(pdev
, PCI_D3cold
, 0);
6596 e1000e_reset(adapter
);
6598 result
= PCI_ERS_RESULT_RECOVERED
;
6601 pci_cleanup_aer_uncorrect_error_status(pdev
);
6607 * e1000_io_resume - called when traffic can start flowing again.
6608 * @pdev: Pointer to PCI device
6610 * This callback is called when the error recovery driver tells us that
6611 * its OK to resume normal operation. Implementation resembles the
6612 * second-half of the e1000e_pm_resume routine.
6614 static void e1000_io_resume(struct pci_dev
*pdev
)
6616 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6617 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6619 e1000_init_manageability_pt(adapter
);
6621 if (netif_running(netdev
)) {
6622 if (e1000e_up(adapter
)) {
6624 "can't bring device back up after reset\n");
6629 netif_device_attach(netdev
);
6631 /* If the controller has AMT, do not set DRV_LOAD until the interface
6632 * is up. For all other cases, let the f/w know that the h/w is now
6633 * under the control of the driver.
6635 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6636 e1000e_get_hw_control(adapter
);
6639 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
6641 struct e1000_hw
*hw
= &adapter
->hw
;
6642 struct net_device
*netdev
= adapter
->netdev
;
6644 u8 pba_str
[E1000_PBANUM_LENGTH
];
6646 /* print bus type/speed/width info */
6647 e_info("(PCI Express:2.5GT/s:%s) %pM\n",
6649 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
6653 e_info("Intel(R) PRO/%s Network Connection\n",
6654 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
6655 ret_val
= e1000_read_pba_string_generic(hw
, pba_str
,
6656 E1000_PBANUM_LENGTH
);
6658 strlcpy((char *)pba_str
, "Unknown", sizeof(pba_str
));
6659 e_info("MAC: %d, PHY: %d, PBA No: %s\n",
6660 hw
->mac
.type
, hw
->phy
.type
, pba_str
);
6663 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
6665 struct e1000_hw
*hw
= &adapter
->hw
;
6669 if (hw
->mac
.type
!= e1000_82573
)
6672 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
6674 if (!ret_val
&& (!(buf
& (1 << 0)))) {
6675 /* Deep Smart Power Down (DSPD) */
6676 dev_warn(&adapter
->pdev
->dev
,
6677 "Warning: detected DSPD enabled in EEPROM\n");
6681 static int e1000_set_features(struct net_device
*netdev
,
6682 netdev_features_t features
)
6684 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6685 netdev_features_t changed
= features
^ netdev
->features
;
6687 if (changed
& (NETIF_F_TSO
| NETIF_F_TSO6
))
6688 adapter
->flags
|= FLAG_TSO_FORCE
;
6690 if (!(changed
& (NETIF_F_HW_VLAN_CTAG_RX
| NETIF_F_HW_VLAN_CTAG_TX
|
6691 NETIF_F_RXCSUM
| NETIF_F_RXHASH
| NETIF_F_RXFCS
|
6695 if (changed
& NETIF_F_RXFCS
) {
6696 if (features
& NETIF_F_RXFCS
) {
6697 adapter
->flags2
&= ~FLAG2_CRC_STRIPPING
;
6699 /* We need to take it back to defaults, which might mean
6700 * stripping is still disabled at the adapter level.
6702 if (adapter
->flags2
& FLAG2_DFLT_CRC_STRIPPING
)
6703 adapter
->flags2
|= FLAG2_CRC_STRIPPING
;
6705 adapter
->flags2
&= ~FLAG2_CRC_STRIPPING
;
6709 netdev
->features
= features
;
6711 if (netif_running(netdev
))
6712 e1000e_reinit_locked(adapter
);
6714 e1000e_reset(adapter
);
6719 static const struct net_device_ops e1000e_netdev_ops
= {
6720 .ndo_open
= e1000_open
,
6721 .ndo_stop
= e1000_close
,
6722 .ndo_start_xmit
= e1000_xmit_frame
,
6723 .ndo_get_stats64
= e1000e_get_stats64
,
6724 .ndo_set_rx_mode
= e1000e_set_rx_mode
,
6725 .ndo_set_mac_address
= e1000_set_mac
,
6726 .ndo_change_mtu
= e1000_change_mtu
,
6727 .ndo_do_ioctl
= e1000_ioctl
,
6728 .ndo_tx_timeout
= e1000_tx_timeout
,
6729 .ndo_validate_addr
= eth_validate_addr
,
6731 .ndo_vlan_rx_add_vid
= e1000_vlan_rx_add_vid
,
6732 .ndo_vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
,
6733 #ifdef CONFIG_NET_POLL_CONTROLLER
6734 .ndo_poll_controller
= e1000_netpoll
,
6736 .ndo_set_features
= e1000_set_features
,
6740 * e1000_probe - Device Initialization Routine
6741 * @pdev: PCI device information struct
6742 * @ent: entry in e1000_pci_tbl
6744 * Returns 0 on success, negative on failure
6746 * e1000_probe initializes an adapter identified by a pci_dev structure.
6747 * The OS initialization, configuring of the adapter private structure,
6748 * and a hardware reset occur.
6750 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
6752 struct net_device
*netdev
;
6753 struct e1000_adapter
*adapter
;
6754 struct e1000_hw
*hw
;
6755 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
6756 resource_size_t mmio_start
, mmio_len
;
6757 resource_size_t flash_start
, flash_len
;
6758 static int cards_found
;
6759 u16 aspm_disable_flag
= 0;
6760 int bars
, i
, err
, pci_using_dac
;
6761 u16 eeprom_data
= 0;
6762 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
6765 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
6766 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
6767 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L1
)
6768 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
6769 if (aspm_disable_flag
)
6770 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
6772 err
= pci_enable_device_mem(pdev
);
6777 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(64));
6781 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(32));
6784 "No usable DMA configuration, aborting\n");
6789 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
);
6790 err
= pci_request_selected_regions_exclusive(pdev
, bars
,
6791 e1000e_driver_name
);
6795 /* AER (Advanced Error Reporting) hooks */
6796 pci_enable_pcie_error_reporting(pdev
);
6798 pci_set_master(pdev
);
6799 /* PCI config space info */
6800 err
= pci_save_state(pdev
);
6802 goto err_alloc_etherdev
;
6805 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
6807 goto err_alloc_etherdev
;
6809 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
6811 netdev
->irq
= pdev
->irq
;
6813 pci_set_drvdata(pdev
, netdev
);
6814 adapter
= netdev_priv(netdev
);
6816 adapter
->netdev
= netdev
;
6817 adapter
->pdev
= pdev
;
6819 adapter
->pba
= ei
->pba
;
6820 adapter
->flags
= ei
->flags
;
6821 adapter
->flags2
= ei
->flags2
;
6822 adapter
->hw
.adapter
= adapter
;
6823 adapter
->hw
.mac
.type
= ei
->mac
;
6824 adapter
->max_hw_frame_size
= ei
->max_hw_frame_size
;
6825 adapter
->msg_enable
= netif_msg_init(debug
, DEFAULT_MSG_ENABLE
);
6827 mmio_start
= pci_resource_start(pdev
, 0);
6828 mmio_len
= pci_resource_len(pdev
, 0);
6831 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
6832 if (!adapter
->hw
.hw_addr
)
6835 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
6836 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
) &&
6837 (hw
->mac
.type
< e1000_pch_spt
)) {
6838 flash_start
= pci_resource_start(pdev
, 1);
6839 flash_len
= pci_resource_len(pdev
, 1);
6840 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
6841 if (!adapter
->hw
.flash_address
)
6845 /* Set default EEE advertisement */
6846 if (adapter
->flags2
& FLAG2_HAS_EEE
)
6847 adapter
->eee_advert
= MDIO_EEE_100TX
| MDIO_EEE_1000T
;
6849 /* construct the net_device struct */
6850 netdev
->netdev_ops
= &e1000e_netdev_ops
;
6851 e1000e_set_ethtool_ops(netdev
);
6852 netdev
->watchdog_timeo
= 5 * HZ
;
6853 netif_napi_add(netdev
, &adapter
->napi
, e1000e_poll
, 64);
6854 strlcpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
));
6856 netdev
->mem_start
= mmio_start
;
6857 netdev
->mem_end
= mmio_start
+ mmio_len
;
6859 adapter
->bd_number
= cards_found
++;
6861 e1000e_check_options(adapter
);
6863 /* setup adapter struct */
6864 err
= e1000_sw_init(adapter
);
6868 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
6869 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
6870 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
6872 err
= ei
->get_variants(adapter
);
6876 if ((adapter
->flags
& FLAG_IS_ICH
) &&
6877 (adapter
->flags
& FLAG_READ_ONLY_NVM
) &&
6878 (hw
->mac
.type
< e1000_pch_spt
))
6879 e1000e_write_protect_nvm_ich8lan(&adapter
->hw
);
6881 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
6883 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
6885 /* Copper options */
6886 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
6887 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
6888 adapter
->hw
.phy
.disable_polarity_correction
= 0;
6889 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
6892 if (hw
->phy
.ops
.check_reset_block
&& hw
->phy
.ops
.check_reset_block(hw
))
6893 dev_info(&pdev
->dev
,
6894 "PHY reset is blocked due to SOL/IDER session.\n");
6896 /* Set initial default active device features */
6897 netdev
->features
= (NETIF_F_SG
|
6898 NETIF_F_HW_VLAN_CTAG_RX
|
6899 NETIF_F_HW_VLAN_CTAG_TX
|
6906 /* Set user-changeable features (subset of all device features) */
6907 netdev
->hw_features
= netdev
->features
;
6908 netdev
->hw_features
|= NETIF_F_RXFCS
;
6909 netdev
->priv_flags
|= IFF_SUPP_NOFCS
;
6910 netdev
->hw_features
|= NETIF_F_RXALL
;
6912 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
6913 netdev
->features
|= NETIF_F_HW_VLAN_CTAG_FILTER
;
6915 netdev
->vlan_features
|= (NETIF_F_SG
|
6920 netdev
->priv_flags
|= IFF_UNICAST_FLT
;
6922 if (pci_using_dac
) {
6923 netdev
->features
|= NETIF_F_HIGHDMA
;
6924 netdev
->vlan_features
|= NETIF_F_HIGHDMA
;
6927 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
6928 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
6930 /* before reading the NVM, reset the controller to
6931 * put the device in a known good starting state
6933 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
6935 /* systems with ASPM and others may see the checksum fail on the first
6936 * attempt. Let's give it a few tries
6939 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
6942 dev_err(&pdev
->dev
, "The NVM Checksum Is Not Valid\n");
6948 e1000_eeprom_checks(adapter
);
6950 /* copy the MAC address */
6951 if (e1000e_read_mac_addr(&adapter
->hw
))
6953 "NVM Read Error while reading MAC address\n");
6955 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
6957 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
6958 dev_err(&pdev
->dev
, "Invalid MAC Address: %pM\n",
6964 init_timer(&adapter
->watchdog_timer
);
6965 adapter
->watchdog_timer
.function
= e1000_watchdog
;
6966 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
6968 init_timer(&adapter
->phy_info_timer
);
6969 adapter
->phy_info_timer
.function
= e1000_update_phy_info
;
6970 adapter
->phy_info_timer
.data
= (unsigned long)adapter
;
6972 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
6973 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
6974 INIT_WORK(&adapter
->downshift_task
, e1000e_downshift_workaround
);
6975 INIT_WORK(&adapter
->update_phy_task
, e1000e_update_phy_task
);
6976 INIT_WORK(&adapter
->print_hang_task
, e1000_print_hw_hang
);
6978 /* Initialize link parameters. User can change them with ethtool */
6979 adapter
->hw
.mac
.autoneg
= 1;
6980 adapter
->fc_autoneg
= true;
6981 adapter
->hw
.fc
.requested_mode
= e1000_fc_default
;
6982 adapter
->hw
.fc
.current_mode
= e1000_fc_default
;
6983 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
6985 /* Initial Wake on LAN setting - If APM wake is enabled in
6986 * the EEPROM, enable the ACPI Magic Packet filter
6988 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
6989 /* APME bit in EEPROM is mapped to WUC.APME */
6990 eeprom_data
= er32(WUC
);
6991 eeprom_apme_mask
= E1000_WUC_APME
;
6992 if ((hw
->mac
.type
> e1000_ich10lan
) &&
6993 (eeprom_data
& E1000_WUC_PHY_WAKE
))
6994 adapter
->flags2
|= FLAG2_HAS_PHY_WAKEUP
;
6995 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
6996 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
6997 (adapter
->hw
.bus
.func
== 1))
6998 rval
= e1000_read_nvm(&adapter
->hw
,
6999 NVM_INIT_CONTROL3_PORT_B
,
7002 rval
= e1000_read_nvm(&adapter
->hw
,
7003 NVM_INIT_CONTROL3_PORT_A
,
7007 /* fetch WoL from EEPROM */
7009 e_dbg("NVM read error getting WoL initial values: %d\n", rval
);
7010 else if (eeprom_data
& eeprom_apme_mask
)
7011 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
7013 /* now that we have the eeprom settings, apply the special cases
7014 * where the eeprom may be wrong or the board simply won't support
7015 * wake on lan on a particular port
7017 if (!(adapter
->flags
& FLAG_HAS_WOL
))
7018 adapter
->eeprom_wol
= 0;
7020 /* initialize the wol settings based on the eeprom settings */
7021 adapter
->wol
= adapter
->eeprom_wol
;
7023 /* make sure adapter isn't asleep if manageability is enabled */
7024 if (adapter
->wol
|| (adapter
->flags
& FLAG_MNG_PT_ENABLED
) ||
7025 (hw
->mac
.ops
.check_mng_mode(hw
)))
7026 device_wakeup_enable(&pdev
->dev
);
7028 /* save off EEPROM version number */
7029 rval
= e1000_read_nvm(&adapter
->hw
, 5, 1, &adapter
->eeprom_vers
);
7032 e_dbg("NVM read error getting EEPROM version: %d\n", rval
);
7033 adapter
->eeprom_vers
= 0;
7036 /* reset the hardware with the new settings */
7037 e1000e_reset(adapter
);
7039 /* If the controller has AMT, do not set DRV_LOAD until the interface
7040 * is up. For all other cases, let the f/w know that the h/w is now
7041 * under the control of the driver.
7043 if (!(adapter
->flags
& FLAG_HAS_AMT
))
7044 e1000e_get_hw_control(adapter
);
7046 strlcpy(netdev
->name
, "eth%d", sizeof(netdev
->name
));
7047 err
= register_netdev(netdev
);
7051 /* carrier off reporting is important to ethtool even BEFORE open */
7052 netif_carrier_off(netdev
);
7054 /* init PTP hardware clock */
7055 e1000e_ptp_init(adapter
);
7057 e1000_print_device_info(adapter
);
7059 if (pci_dev_run_wake(pdev
))
7060 pm_runtime_put_noidle(&pdev
->dev
);
7065 if (!(adapter
->flags
& FLAG_HAS_AMT
))
7066 e1000e_release_hw_control(adapter
);
7068 if (hw
->phy
.ops
.check_reset_block
&& !hw
->phy
.ops
.check_reset_block(hw
))
7069 e1000_phy_hw_reset(&adapter
->hw
);
7071 kfree(adapter
->tx_ring
);
7072 kfree(adapter
->rx_ring
);
7074 if ((adapter
->hw
.flash_address
) && (hw
->mac
.type
< e1000_pch_spt
))
7075 iounmap(adapter
->hw
.flash_address
);
7076 e1000e_reset_interrupt_capability(adapter
);
7078 iounmap(adapter
->hw
.hw_addr
);
7080 free_netdev(netdev
);
7082 pci_release_selected_regions(pdev
,
7083 pci_select_bars(pdev
, IORESOURCE_MEM
));
7086 pci_disable_device(pdev
);
7091 * e1000_remove - Device Removal Routine
7092 * @pdev: PCI device information struct
7094 * e1000_remove is called by the PCI subsystem to alert the driver
7095 * that it should release a PCI device. The could be caused by a
7096 * Hot-Plug event, or because the driver is going to be removed from
7099 static void e1000_remove(struct pci_dev
*pdev
)
7101 struct net_device
*netdev
= pci_get_drvdata(pdev
);
7102 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
7103 bool down
= test_bit(__E1000_DOWN
, &adapter
->state
);
7105 e1000e_ptp_remove(adapter
);
7107 /* The timers may be rescheduled, so explicitly disable them
7108 * from being rescheduled.
7111 set_bit(__E1000_DOWN
, &adapter
->state
);
7112 del_timer_sync(&adapter
->watchdog_timer
);
7113 del_timer_sync(&adapter
->phy_info_timer
);
7115 cancel_work_sync(&adapter
->reset_task
);
7116 cancel_work_sync(&adapter
->watchdog_task
);
7117 cancel_work_sync(&adapter
->downshift_task
);
7118 cancel_work_sync(&adapter
->update_phy_task
);
7119 cancel_work_sync(&adapter
->print_hang_task
);
7121 if (adapter
->flags
& FLAG_HAS_HW_TIMESTAMP
) {
7122 cancel_work_sync(&adapter
->tx_hwtstamp_work
);
7123 if (adapter
->tx_hwtstamp_skb
) {
7124 dev_kfree_skb_any(adapter
->tx_hwtstamp_skb
);
7125 adapter
->tx_hwtstamp_skb
= NULL
;
7129 /* Don't lie to e1000_close() down the road. */
7131 clear_bit(__E1000_DOWN
, &adapter
->state
);
7132 unregister_netdev(netdev
);
7134 if (pci_dev_run_wake(pdev
))
7135 pm_runtime_get_noresume(&pdev
->dev
);
7137 /* Release control of h/w to f/w. If f/w is AMT enabled, this
7138 * would have already happened in close and is redundant.
7140 e1000e_release_hw_control(adapter
);
7142 e1000e_reset_interrupt_capability(adapter
);
7143 kfree(adapter
->tx_ring
);
7144 kfree(adapter
->rx_ring
);
7146 iounmap(adapter
->hw
.hw_addr
);
7147 if ((adapter
->hw
.flash_address
) &&
7148 (adapter
->hw
.mac
.type
< e1000_pch_spt
))
7149 iounmap(adapter
->hw
.flash_address
);
7150 pci_release_selected_regions(pdev
,
7151 pci_select_bars(pdev
, IORESOURCE_MEM
));
7153 free_netdev(netdev
);
7156 pci_disable_pcie_error_reporting(pdev
);
7158 pci_disable_device(pdev
);
7161 /* PCI Error Recovery (ERS) */
7162 static const struct pci_error_handlers e1000_err_handler
= {
7163 .error_detected
= e1000_io_error_detected
,
7164 .slot_reset
= e1000_io_slot_reset
,
7165 .resume
= e1000_io_resume
,
7168 static const struct pci_device_id e1000_pci_tbl
[] = {
7169 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
7170 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
7171 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
7172 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
),
7174 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
7175 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
7176 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
7177 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
7178 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
7180 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
7181 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
7182 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
7183 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
7185 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
7186 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
7187 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
7189 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574L
), board_82574
},
7190 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574LA
), board_82574
},
7191 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82583V
), board_82583
},
7193 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
7194 board_80003es2lan
},
7195 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
7196 board_80003es2lan
},
7197 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
7198 board_80003es2lan
},
7199 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
7200 board_80003es2lan
},
7202 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
7203 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
7204 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
7205 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
7206 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
7207 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
7208 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
7209 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_82567V_3
), board_ich8lan
},
7211 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
7212 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
7213 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
7214 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
7215 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
7216 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_BM
), board_ich9lan
},
7217 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
7218 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
7219 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
7221 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
7222 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
7223 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
7225 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LM
), board_ich10lan
},
7226 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LF
), board_ich10lan
},
7227 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_V
), board_ich10lan
},
7229 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LM
), board_pchlan
},
7230 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LC
), board_pchlan
},
7231 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DM
), board_pchlan
},
7232 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DC
), board_pchlan
},
7234 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_LM
), board_pch2lan
},
7235 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_V
), board_pch2lan
},
7237 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPT_I217_LM
), board_pch_lpt
},
7238 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPT_I217_V
), board_pch_lpt
},
7239 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPTLP_I218_LM
), board_pch_lpt
},
7240 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPTLP_I218_V
), board_pch_lpt
},
7241 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_I218_LM2
), board_pch_lpt
},
7242 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_I218_V2
), board_pch_lpt
},
7243 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_I218_LM3
), board_pch_lpt
},
7244 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_I218_V3
), board_pch_lpt
},
7245 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_SPT_I219_LM
), board_pch_spt
},
7246 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_SPT_I219_V
), board_pch_spt
},
7247 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_SPT_I219_LM2
), board_pch_spt
},
7248 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_SPT_I219_V2
), board_pch_spt
},
7250 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */
7252 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
7254 static const struct dev_pm_ops e1000_pm_ops
= {
7255 #ifdef CONFIG_PM_SLEEP
7256 .suspend
= e1000e_pm_suspend
,
7257 .resume
= e1000e_pm_resume
,
7258 .freeze
= e1000e_pm_freeze
,
7259 .thaw
= e1000e_pm_thaw
,
7260 .poweroff
= e1000e_pm_suspend
,
7261 .restore
= e1000e_pm_resume
,
7263 SET_RUNTIME_PM_OPS(e1000e_pm_runtime_suspend
, e1000e_pm_runtime_resume
,
7264 e1000e_pm_runtime_idle
)
7267 /* PCI Device API Driver */
7268 static struct pci_driver e1000_driver
= {
7269 .name
= e1000e_driver_name
,
7270 .id_table
= e1000_pci_tbl
,
7271 .probe
= e1000_probe
,
7272 .remove
= e1000_remove
,
7274 .pm
= &e1000_pm_ops
,
7276 .shutdown
= e1000_shutdown
,
7277 .err_handler
= &e1000_err_handler
7281 * e1000_init_module - Driver Registration Routine
7283 * e1000_init_module is the first routine called when the driver is
7284 * loaded. All it does is register with the PCI subsystem.
7286 static int __init
e1000_init_module(void)
7290 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
7291 e1000e_driver_version
);
7292 pr_info("Copyright(c) 1999 - 2014 Intel Corporation.\n");
7293 ret
= pci_register_driver(&e1000_driver
);
7297 module_init(e1000_init_module
);
7300 * e1000_exit_module - Driver Exit Cleanup Routine
7302 * e1000_exit_module is called just before the driver is removed
7305 static void __exit
e1000_exit_module(void)
7307 pci_unregister_driver(&e1000_driver
);
7309 module_exit(e1000_exit_module
);
7311 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
7312 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
7313 MODULE_LICENSE("GPL");
7314 MODULE_VERSION(DRV_VERSION
);