1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2013 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
29 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31 #include <linux/module.h>
32 #include <linux/types.h>
33 #include <linux/init.h>
34 #include <linux/pci.h>
35 #include <linux/vmalloc.h>
36 #include <linux/pagemap.h>
37 #include <linux/delay.h>
38 #include <linux/netdevice.h>
39 #include <linux/interrupt.h>
40 #include <linux/tcp.h>
41 #include <linux/ipv6.h>
42 #include <linux/slab.h>
43 #include <net/checksum.h>
44 #include <net/ip6_checksum.h>
45 #include <linux/ethtool.h>
46 #include <linux/if_vlan.h>
47 #include <linux/cpu.h>
48 #include <linux/smp.h>
49 #include <linux/pm_qos.h>
50 #include <linux/pm_runtime.h>
51 #include <linux/aer.h>
52 #include <linux/prefetch.h>
56 #define DRV_EXTRAVERSION "-k"
58 #define DRV_VERSION "2.3.2" DRV_EXTRAVERSION
59 char e1000e_driver_name
[] = "e1000e";
60 const char e1000e_driver_version
[] = DRV_VERSION
;
62 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
63 static int debug
= -1;
64 module_param(debug
, int, 0);
65 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
67 static const struct e1000_info
*e1000_info_tbl
[] = {
68 [board_82571
] = &e1000_82571_info
,
69 [board_82572
] = &e1000_82572_info
,
70 [board_82573
] = &e1000_82573_info
,
71 [board_82574
] = &e1000_82574_info
,
72 [board_82583
] = &e1000_82583_info
,
73 [board_80003es2lan
] = &e1000_es2_info
,
74 [board_ich8lan
] = &e1000_ich8_info
,
75 [board_ich9lan
] = &e1000_ich9_info
,
76 [board_ich10lan
] = &e1000_ich10_info
,
77 [board_pchlan
] = &e1000_pch_info
,
78 [board_pch2lan
] = &e1000_pch2_info
,
79 [board_pch_lpt
] = &e1000_pch_lpt_info
,
82 struct e1000_reg_info
{
87 static const struct e1000_reg_info e1000_reg_info_tbl
[] = {
88 /* General Registers */
90 {E1000_STATUS
, "STATUS"},
91 {E1000_CTRL_EXT
, "CTRL_EXT"},
93 /* Interrupt Registers */
98 {E1000_RDLEN(0), "RDLEN"},
99 {E1000_RDH(0), "RDH"},
100 {E1000_RDT(0), "RDT"},
101 {E1000_RDTR
, "RDTR"},
102 {E1000_RXDCTL(0), "RXDCTL"},
104 {E1000_RDBAL(0), "RDBAL"},
105 {E1000_RDBAH(0), "RDBAH"},
106 {E1000_RDFH
, "RDFH"},
107 {E1000_RDFT
, "RDFT"},
108 {E1000_RDFHS
, "RDFHS"},
109 {E1000_RDFTS
, "RDFTS"},
110 {E1000_RDFPC
, "RDFPC"},
113 {E1000_TCTL
, "TCTL"},
114 {E1000_TDBAL(0), "TDBAL"},
115 {E1000_TDBAH(0), "TDBAH"},
116 {E1000_TDLEN(0), "TDLEN"},
117 {E1000_TDH(0), "TDH"},
118 {E1000_TDT(0), "TDT"},
119 {E1000_TIDV
, "TIDV"},
120 {E1000_TXDCTL(0), "TXDCTL"},
121 {E1000_TADV
, "TADV"},
122 {E1000_TARC(0), "TARC"},
123 {E1000_TDFH
, "TDFH"},
124 {E1000_TDFT
, "TDFT"},
125 {E1000_TDFHS
, "TDFHS"},
126 {E1000_TDFTS
, "TDFTS"},
127 {E1000_TDFPC
, "TDFPC"},
129 /* List Terminator */
134 * e1000_regdump - register printout routine
135 * @hw: pointer to the HW structure
136 * @reginfo: pointer to the register info table
138 static void e1000_regdump(struct e1000_hw
*hw
, struct e1000_reg_info
*reginfo
)
144 switch (reginfo
->ofs
) {
145 case E1000_RXDCTL(0):
146 for (n
= 0; n
< 2; n
++)
147 regs
[n
] = __er32(hw
, E1000_RXDCTL(n
));
149 case E1000_TXDCTL(0):
150 for (n
= 0; n
< 2; n
++)
151 regs
[n
] = __er32(hw
, E1000_TXDCTL(n
));
154 for (n
= 0; n
< 2; n
++)
155 regs
[n
] = __er32(hw
, E1000_TARC(n
));
158 pr_info("%-15s %08x\n",
159 reginfo
->name
, __er32(hw
, reginfo
->ofs
));
163 snprintf(rname
, 16, "%s%s", reginfo
->name
, "[0-1]");
164 pr_info("%-15s %08x %08x\n", rname
, regs
[0], regs
[1]);
167 static void e1000e_dump_ps_pages(struct e1000_adapter
*adapter
,
168 struct e1000_buffer
*bi
)
171 struct e1000_ps_page
*ps_page
;
173 for (i
= 0; i
< adapter
->rx_ps_pages
; i
++) {
174 ps_page
= &bi
->ps_pages
[i
];
177 pr_info("packet dump for ps_page %d:\n", i
);
178 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_ADDRESS
,
179 16, 1, page_address(ps_page
->page
),
186 * e1000e_dump - Print registers, Tx-ring and Rx-ring
187 * @adapter: board private structure
189 static void e1000e_dump(struct e1000_adapter
*adapter
)
191 struct net_device
*netdev
= adapter
->netdev
;
192 struct e1000_hw
*hw
= &adapter
->hw
;
193 struct e1000_reg_info
*reginfo
;
194 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
195 struct e1000_tx_desc
*tx_desc
;
200 struct e1000_buffer
*buffer_info
;
201 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
202 union e1000_rx_desc_packet_split
*rx_desc_ps
;
203 union e1000_rx_desc_extended
*rx_desc
;
213 if (!netif_msg_hw(adapter
))
216 /* Print netdevice Info */
218 dev_info(&adapter
->pdev
->dev
, "Net device Info\n");
219 pr_info("Device Name state trans_start last_rx\n");
220 pr_info("%-15s %016lX %016lX %016lX\n", netdev
->name
,
221 netdev
->state
, netdev
->trans_start
, netdev
->last_rx
);
224 /* Print Registers */
225 dev_info(&adapter
->pdev
->dev
, "Register Dump\n");
226 pr_info(" Register Name Value\n");
227 for (reginfo
= (struct e1000_reg_info
*)e1000_reg_info_tbl
;
228 reginfo
->name
; reginfo
++) {
229 e1000_regdump(hw
, reginfo
);
232 /* Print Tx Ring Summary */
233 if (!netdev
|| !netif_running(netdev
))
236 dev_info(&adapter
->pdev
->dev
, "Tx Ring Summary\n");
237 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
238 buffer_info
= &tx_ring
->buffer_info
[tx_ring
->next_to_clean
];
239 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n",
240 0, tx_ring
->next_to_use
, tx_ring
->next_to_clean
,
241 (unsigned long long)buffer_info
->dma
,
243 buffer_info
->next_to_watch
,
244 (unsigned long long)buffer_info
->time_stamp
);
247 if (!netif_msg_tx_done(adapter
))
248 goto rx_ring_summary
;
250 dev_info(&adapter
->pdev
->dev
, "Tx Ring Dump\n");
252 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
254 * Legacy Transmit Descriptor
255 * +--------------------------------------------------------------+
256 * 0 | Buffer Address [63:0] (Reserved on Write Back) |
257 * +--------------------------------------------------------------+
258 * 8 | Special | CSS | Status | CMD | CSO | Length |
259 * +--------------------------------------------------------------+
260 * 63 48 47 36 35 32 31 24 23 16 15 0
262 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
263 * 63 48 47 40 39 32 31 16 15 8 7 0
264 * +----------------------------------------------------------------+
265 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
266 * +----------------------------------------------------------------+
267 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
268 * +----------------------------------------------------------------+
269 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
271 * Extended Data Descriptor (DTYP=0x1)
272 * +----------------------------------------------------------------+
273 * 0 | Buffer Address [63:0] |
274 * +----------------------------------------------------------------+
275 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
276 * +----------------------------------------------------------------+
277 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
279 pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n");
280 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n");
281 pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Data format\n");
282 for (i
= 0; tx_ring
->desc
&& (i
< tx_ring
->count
); i
++) {
283 const char *next_desc
;
284 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
285 buffer_info
= &tx_ring
->buffer_info
[i
];
286 u0
= (struct my_u0
*)tx_desc
;
287 if (i
== tx_ring
->next_to_use
&& i
== tx_ring
->next_to_clean
)
288 next_desc
= " NTC/U";
289 else if (i
== tx_ring
->next_to_use
)
291 else if (i
== tx_ring
->next_to_clean
)
295 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n",
296 (!(le64_to_cpu(u0
->b
) & (1 << 29)) ? 'l' :
297 ((le64_to_cpu(u0
->b
) & (1 << 20)) ? 'd' : 'c')),
299 (unsigned long long)le64_to_cpu(u0
->a
),
300 (unsigned long long)le64_to_cpu(u0
->b
),
301 (unsigned long long)buffer_info
->dma
,
302 buffer_info
->length
, buffer_info
->next_to_watch
,
303 (unsigned long long)buffer_info
->time_stamp
,
304 buffer_info
->skb
, next_desc
);
306 if (netif_msg_pktdata(adapter
) && buffer_info
->skb
)
307 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_ADDRESS
,
308 16, 1, buffer_info
->skb
->data
,
309 buffer_info
->skb
->len
, true);
312 /* Print Rx Ring Summary */
314 dev_info(&adapter
->pdev
->dev
, "Rx Ring Summary\n");
315 pr_info("Queue [NTU] [NTC]\n");
316 pr_info(" %5d %5X %5X\n",
317 0, rx_ring
->next_to_use
, rx_ring
->next_to_clean
);
320 if (!netif_msg_rx_status(adapter
))
323 dev_info(&adapter
->pdev
->dev
, "Rx Ring Dump\n");
324 switch (adapter
->rx_ps_pages
) {
328 /* [Extended] Packet Split Receive Descriptor Format
330 * +-----------------------------------------------------+
331 * 0 | Buffer Address 0 [63:0] |
332 * +-----------------------------------------------------+
333 * 8 | Buffer Address 1 [63:0] |
334 * +-----------------------------------------------------+
335 * 16 | Buffer Address 2 [63:0] |
336 * +-----------------------------------------------------+
337 * 24 | Buffer Address 3 [63:0] |
338 * +-----------------------------------------------------+
340 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");
341 /* [Extended] Receive Descriptor (Write-Back) Format
343 * 63 48 47 32 31 13 12 8 7 4 3 0
344 * +------------------------------------------------------+
345 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
346 * | Checksum | Ident | | Queue | | Type |
347 * +------------------------------------------------------+
348 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
349 * +------------------------------------------------------+
350 * 63 48 47 32 31 20 19 0
352 pr_info("RWB[desc] [ck ipid mrqhsh] [vl l0 ee es] [ l3 l2 l1 hs] [reserved ] ---------------- [bi->skb] <-- Ext Rx Write-Back format\n");
353 for (i
= 0; i
< rx_ring
->count
; i
++) {
354 const char *next_desc
;
355 buffer_info
= &rx_ring
->buffer_info
[i
];
356 rx_desc_ps
= E1000_RX_DESC_PS(*rx_ring
, i
);
357 u1
= (struct my_u1
*)rx_desc_ps
;
359 le32_to_cpu(rx_desc_ps
->wb
.middle
.status_error
);
361 if (i
== rx_ring
->next_to_use
)
363 else if (i
== rx_ring
->next_to_clean
)
368 if (staterr
& E1000_RXD_STAT_DD
) {
369 /* Descriptor Done */
370 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n",
372 (unsigned long long)le64_to_cpu(u1
->a
),
373 (unsigned long long)le64_to_cpu(u1
->b
),
374 (unsigned long long)le64_to_cpu(u1
->c
),
375 (unsigned long long)le64_to_cpu(u1
->d
),
376 buffer_info
->skb
, next_desc
);
378 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n",
380 (unsigned long long)le64_to_cpu(u1
->a
),
381 (unsigned long long)le64_to_cpu(u1
->b
),
382 (unsigned long long)le64_to_cpu(u1
->c
),
383 (unsigned long long)le64_to_cpu(u1
->d
),
384 (unsigned long long)buffer_info
->dma
,
385 buffer_info
->skb
, next_desc
);
387 if (netif_msg_pktdata(adapter
))
388 e1000e_dump_ps_pages(adapter
,
395 /* Extended Receive Descriptor (Read) Format
397 * +-----------------------------------------------------+
398 * 0 | Buffer Address [63:0] |
399 * +-----------------------------------------------------+
401 * +-----------------------------------------------------+
403 pr_info("R [desc] [buf addr 63:0 ] [reserved 63:0 ] [bi->dma ] [bi->skb] <-- Ext (Read) format\n");
404 /* Extended Receive Descriptor (Write-Back) Format
406 * 63 48 47 32 31 24 23 4 3 0
407 * +------------------------------------------------------+
409 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS |
410 * | Packet | IP | | | Type |
411 * | Checksum | Ident | | | |
412 * +------------------------------------------------------+
413 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
414 * +------------------------------------------------------+
415 * 63 48 47 32 31 20 19 0
417 pr_info("RWB[desc] [cs ipid mrq] [vt ln xe xs] [bi->skb] <-- Ext (Write-Back) format\n");
419 for (i
= 0; i
< rx_ring
->count
; i
++) {
420 const char *next_desc
;
422 buffer_info
= &rx_ring
->buffer_info
[i
];
423 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
424 u1
= (struct my_u1
*)rx_desc
;
425 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
427 if (i
== rx_ring
->next_to_use
)
429 else if (i
== rx_ring
->next_to_clean
)
434 if (staterr
& E1000_RXD_STAT_DD
) {
435 /* Descriptor Done */
436 pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n",
438 (unsigned long long)le64_to_cpu(u1
->a
),
439 (unsigned long long)le64_to_cpu(u1
->b
),
440 buffer_info
->skb
, next_desc
);
442 pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n",
444 (unsigned long long)le64_to_cpu(u1
->a
),
445 (unsigned long long)le64_to_cpu(u1
->b
),
446 (unsigned long long)buffer_info
->dma
,
447 buffer_info
->skb
, next_desc
);
449 if (netif_msg_pktdata(adapter
) &&
451 print_hex_dump(KERN_INFO
, "",
452 DUMP_PREFIX_ADDRESS
, 16,
454 buffer_info
->skb
->data
,
455 adapter
->rx_buffer_len
,
463 * e1000_desc_unused - calculate if we have unused descriptors
465 static int e1000_desc_unused(struct e1000_ring
*ring
)
467 if (ring
->next_to_clean
> ring
->next_to_use
)
468 return ring
->next_to_clean
- ring
->next_to_use
- 1;
470 return ring
->count
+ ring
->next_to_clean
- ring
->next_to_use
- 1;
474 * e1000e_systim_to_hwtstamp - convert system time value to hw time stamp
475 * @adapter: board private structure
476 * @hwtstamps: time stamp structure to update
477 * @systim: unsigned 64bit system time value.
479 * Convert the system time value stored in the RX/TXSTMP registers into a
480 * hwtstamp which can be used by the upper level time stamping functions.
482 * The 'systim_lock' spinlock is used to protect the consistency of the
483 * system time value. This is needed because reading the 64 bit time
484 * value involves reading two 32 bit registers. The first read latches the
487 static void e1000e_systim_to_hwtstamp(struct e1000_adapter
*adapter
,
488 struct skb_shared_hwtstamps
*hwtstamps
,
494 spin_lock_irqsave(&adapter
->systim_lock
, flags
);
495 ns
= timecounter_cyc2time(&adapter
->tc
, systim
);
496 spin_unlock_irqrestore(&adapter
->systim_lock
, flags
);
498 memset(hwtstamps
, 0, sizeof(*hwtstamps
));
499 hwtstamps
->hwtstamp
= ns_to_ktime(ns
);
503 * e1000e_rx_hwtstamp - utility function which checks for Rx time stamp
504 * @adapter: board private structure
505 * @status: descriptor extended error and status field
506 * @skb: particular skb to include time stamp
508 * If the time stamp is valid, convert it into the timecounter ns value
509 * and store that result into the shhwtstamps structure which is passed
510 * up the network stack.
512 static void e1000e_rx_hwtstamp(struct e1000_adapter
*adapter
, u32 status
,
515 struct e1000_hw
*hw
= &adapter
->hw
;
518 if (!(adapter
->flags
& FLAG_HAS_HW_TIMESTAMP
) ||
519 !(status
& E1000_RXDEXT_STATERR_TST
) ||
520 !(er32(TSYNCRXCTL
) & E1000_TSYNCRXCTL_VALID
))
523 /* The Rx time stamp registers contain the time stamp. No other
524 * received packet will be time stamped until the Rx time stamp
525 * registers are read. Because only one packet can be time stamped
526 * at a time, the register values must belong to this packet and
527 * therefore none of the other additional attributes need to be
530 rxstmp
= (u64
)er32(RXSTMPL
);
531 rxstmp
|= (u64
)er32(RXSTMPH
) << 32;
532 e1000e_systim_to_hwtstamp(adapter
, skb_hwtstamps(skb
), rxstmp
);
534 adapter
->flags2
&= ~FLAG2_CHECK_RX_HWTSTAMP
;
538 * e1000_receive_skb - helper function to handle Rx indications
539 * @adapter: board private structure
540 * @staterr: descriptor extended error and status field as written by hardware
541 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
542 * @skb: pointer to sk_buff to be indicated to stack
544 static void e1000_receive_skb(struct e1000_adapter
*adapter
,
545 struct net_device
*netdev
, struct sk_buff
*skb
,
546 u32 staterr
, __le16 vlan
)
548 u16 tag
= le16_to_cpu(vlan
);
550 e1000e_rx_hwtstamp(adapter
, staterr
, skb
);
552 skb
->protocol
= eth_type_trans(skb
, netdev
);
554 if (staterr
& E1000_RXD_STAT_VP
)
555 __vlan_hwaccel_put_tag(skb
, htons(ETH_P_8021Q
), tag
);
557 napi_gro_receive(&adapter
->napi
, skb
);
561 * e1000_rx_checksum - Receive Checksum Offload
562 * @adapter: board private structure
563 * @status_err: receive descriptor status and error fields
564 * @csum: receive descriptor csum field
565 * @sk_buff: socket buffer with received data
567 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
570 u16 status
= (u16
)status_err
;
571 u8 errors
= (u8
)(status_err
>> 24);
573 skb_checksum_none_assert(skb
);
575 /* Rx checksum disabled */
576 if (!(adapter
->netdev
->features
& NETIF_F_RXCSUM
))
579 /* Ignore Checksum bit is set */
580 if (status
& E1000_RXD_STAT_IXSM
)
583 /* TCP/UDP checksum error bit or IP checksum error bit is set */
584 if (errors
& (E1000_RXD_ERR_TCPE
| E1000_RXD_ERR_IPE
)) {
585 /* let the stack verify checksum errors */
586 adapter
->hw_csum_err
++;
590 /* TCP/UDP Checksum has not been calculated */
591 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
594 /* It must be a TCP or UDP packet with a valid checksum */
595 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
596 adapter
->hw_csum_good
++;
599 static void e1000e_update_rdt_wa(struct e1000_ring
*rx_ring
, unsigned int i
)
601 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
602 struct e1000_hw
*hw
= &adapter
->hw
;
603 s32 ret_val
= __ew32_prepare(hw
);
605 writel(i
, rx_ring
->tail
);
607 if (unlikely(!ret_val
&& (i
!= readl(rx_ring
->tail
)))) {
608 u32 rctl
= er32(RCTL
);
609 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
610 e_err("ME firmware caused invalid RDT - resetting\n");
611 schedule_work(&adapter
->reset_task
);
615 static void e1000e_update_tdt_wa(struct e1000_ring
*tx_ring
, unsigned int i
)
617 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
618 struct e1000_hw
*hw
= &adapter
->hw
;
619 s32 ret_val
= __ew32_prepare(hw
);
621 writel(i
, tx_ring
->tail
);
623 if (unlikely(!ret_val
&& (i
!= readl(tx_ring
->tail
)))) {
624 u32 tctl
= er32(TCTL
);
625 ew32(TCTL
, tctl
& ~E1000_TCTL_EN
);
626 e_err("ME firmware caused invalid TDT - resetting\n");
627 schedule_work(&adapter
->reset_task
);
632 * e1000_alloc_rx_buffers - Replace used receive buffers
633 * @rx_ring: Rx descriptor ring
635 static void e1000_alloc_rx_buffers(struct e1000_ring
*rx_ring
,
636 int cleaned_count
, gfp_t gfp
)
638 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
639 struct net_device
*netdev
= adapter
->netdev
;
640 struct pci_dev
*pdev
= adapter
->pdev
;
641 union e1000_rx_desc_extended
*rx_desc
;
642 struct e1000_buffer
*buffer_info
;
645 unsigned int bufsz
= adapter
->rx_buffer_len
;
647 i
= rx_ring
->next_to_use
;
648 buffer_info
= &rx_ring
->buffer_info
[i
];
650 while (cleaned_count
--) {
651 skb
= buffer_info
->skb
;
657 skb
= __netdev_alloc_skb_ip_align(netdev
, bufsz
, gfp
);
659 /* Better luck next round */
660 adapter
->alloc_rx_buff_failed
++;
664 buffer_info
->skb
= skb
;
666 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
667 adapter
->rx_buffer_len
,
669 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
670 dev_err(&pdev
->dev
, "Rx DMA map failed\n");
671 adapter
->rx_dma_failed
++;
675 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
676 rx_desc
->read
.buffer_addr
= cpu_to_le64(buffer_info
->dma
);
678 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
679 /* Force memory writes to complete before letting h/w
680 * know there are new descriptors to fetch. (Only
681 * applicable for weak-ordered memory model archs,
685 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
686 e1000e_update_rdt_wa(rx_ring
, i
);
688 writel(i
, rx_ring
->tail
);
691 if (i
== rx_ring
->count
)
693 buffer_info
= &rx_ring
->buffer_info
[i
];
696 rx_ring
->next_to_use
= i
;
700 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
701 * @rx_ring: Rx descriptor ring
703 static void e1000_alloc_rx_buffers_ps(struct e1000_ring
*rx_ring
,
704 int cleaned_count
, gfp_t gfp
)
706 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
707 struct net_device
*netdev
= adapter
->netdev
;
708 struct pci_dev
*pdev
= adapter
->pdev
;
709 union e1000_rx_desc_packet_split
*rx_desc
;
710 struct e1000_buffer
*buffer_info
;
711 struct e1000_ps_page
*ps_page
;
715 i
= rx_ring
->next_to_use
;
716 buffer_info
= &rx_ring
->buffer_info
[i
];
718 while (cleaned_count
--) {
719 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
721 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
722 ps_page
= &buffer_info
->ps_pages
[j
];
723 if (j
>= adapter
->rx_ps_pages
) {
724 /* all unused desc entries get hw null ptr */
725 rx_desc
->read
.buffer_addr
[j
+ 1] =
729 if (!ps_page
->page
) {
730 ps_page
->page
= alloc_page(gfp
);
731 if (!ps_page
->page
) {
732 adapter
->alloc_rx_buff_failed
++;
735 ps_page
->dma
= dma_map_page(&pdev
->dev
,
739 if (dma_mapping_error(&pdev
->dev
,
741 dev_err(&adapter
->pdev
->dev
,
742 "Rx DMA page map failed\n");
743 adapter
->rx_dma_failed
++;
747 /* Refresh the desc even if buffer_addrs
748 * didn't change because each write-back
751 rx_desc
->read
.buffer_addr
[j
+ 1] =
752 cpu_to_le64(ps_page
->dma
);
755 skb
= __netdev_alloc_skb_ip_align(netdev
, adapter
->rx_ps_bsize0
,
759 adapter
->alloc_rx_buff_failed
++;
763 buffer_info
->skb
= skb
;
764 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
765 adapter
->rx_ps_bsize0
,
767 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
768 dev_err(&pdev
->dev
, "Rx DMA map failed\n");
769 adapter
->rx_dma_failed
++;
771 dev_kfree_skb_any(skb
);
772 buffer_info
->skb
= NULL
;
776 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
778 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
779 /* Force memory writes to complete before letting h/w
780 * know there are new descriptors to fetch. (Only
781 * applicable for weak-ordered memory model archs,
785 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
786 e1000e_update_rdt_wa(rx_ring
, i
<< 1);
788 writel(i
<< 1, rx_ring
->tail
);
792 if (i
== rx_ring
->count
)
794 buffer_info
= &rx_ring
->buffer_info
[i
];
798 rx_ring
->next_to_use
= i
;
802 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
803 * @rx_ring: Rx descriptor ring
804 * @cleaned_count: number of buffers to allocate this pass
807 static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring
*rx_ring
,
808 int cleaned_count
, gfp_t gfp
)
810 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
811 struct net_device
*netdev
= adapter
->netdev
;
812 struct pci_dev
*pdev
= adapter
->pdev
;
813 union e1000_rx_desc_extended
*rx_desc
;
814 struct e1000_buffer
*buffer_info
;
817 unsigned int bufsz
= 256 - 16; /* for skb_reserve */
819 i
= rx_ring
->next_to_use
;
820 buffer_info
= &rx_ring
->buffer_info
[i
];
822 while (cleaned_count
--) {
823 skb
= buffer_info
->skb
;
829 skb
= __netdev_alloc_skb_ip_align(netdev
, bufsz
, gfp
);
830 if (unlikely(!skb
)) {
831 /* Better luck next round */
832 adapter
->alloc_rx_buff_failed
++;
836 buffer_info
->skb
= skb
;
838 /* allocate a new page if necessary */
839 if (!buffer_info
->page
) {
840 buffer_info
->page
= alloc_page(gfp
);
841 if (unlikely(!buffer_info
->page
)) {
842 adapter
->alloc_rx_buff_failed
++;
847 if (!buffer_info
->dma
) {
848 buffer_info
->dma
= dma_map_page(&pdev
->dev
,
849 buffer_info
->page
, 0,
852 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
853 adapter
->alloc_rx_buff_failed
++;
858 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
859 rx_desc
->read
.buffer_addr
= cpu_to_le64(buffer_info
->dma
);
861 if (unlikely(++i
== rx_ring
->count
))
863 buffer_info
= &rx_ring
->buffer_info
[i
];
866 if (likely(rx_ring
->next_to_use
!= i
)) {
867 rx_ring
->next_to_use
= i
;
868 if (unlikely(i
-- == 0))
869 i
= (rx_ring
->count
- 1);
871 /* Force memory writes to complete before letting h/w
872 * know there are new descriptors to fetch. (Only
873 * applicable for weak-ordered memory model archs,
877 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
878 e1000e_update_rdt_wa(rx_ring
, i
);
880 writel(i
, rx_ring
->tail
);
884 static inline void e1000_rx_hash(struct net_device
*netdev
, __le32 rss
,
887 if (netdev
->features
& NETIF_F_RXHASH
)
888 skb
->rxhash
= le32_to_cpu(rss
);
892 * e1000_clean_rx_irq - Send received data up the network stack
893 * @rx_ring: Rx descriptor ring
895 * the return value indicates whether actual cleaning was done, there
896 * is no guarantee that everything was cleaned
898 static bool e1000_clean_rx_irq(struct e1000_ring
*rx_ring
, int *work_done
,
901 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
902 struct net_device
*netdev
= adapter
->netdev
;
903 struct pci_dev
*pdev
= adapter
->pdev
;
904 struct e1000_hw
*hw
= &adapter
->hw
;
905 union e1000_rx_desc_extended
*rx_desc
, *next_rxd
;
906 struct e1000_buffer
*buffer_info
, *next_buffer
;
909 int cleaned_count
= 0;
910 bool cleaned
= false;
911 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
913 i
= rx_ring
->next_to_clean
;
914 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
915 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
916 buffer_info
= &rx_ring
->buffer_info
[i
];
918 while (staterr
& E1000_RXD_STAT_DD
) {
921 if (*work_done
>= work_to_do
)
924 rmb(); /* read descriptor and rx_buffer_info after status DD */
926 skb
= buffer_info
->skb
;
927 buffer_info
->skb
= NULL
;
929 prefetch(skb
->data
- NET_IP_ALIGN
);
932 if (i
== rx_ring
->count
)
934 next_rxd
= E1000_RX_DESC_EXT(*rx_ring
, i
);
937 next_buffer
= &rx_ring
->buffer_info
[i
];
941 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
942 adapter
->rx_buffer_len
, DMA_FROM_DEVICE
);
943 buffer_info
->dma
= 0;
945 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
947 /* !EOP means multiple descriptors were used to store a single
948 * packet, if that's the case we need to toss it. In fact, we
949 * need to toss every packet with the EOP bit clear and the
950 * next frame that _does_ have the EOP bit set, as it is by
951 * definition only a frame fragment
953 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
)))
954 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
956 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
957 /* All receives must fit into a single buffer */
958 e_dbg("Receive packet consumed multiple buffers\n");
960 buffer_info
->skb
= skb
;
961 if (staterr
& E1000_RXD_STAT_EOP
)
962 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
966 if (unlikely((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
967 !(netdev
->features
& NETIF_F_RXALL
))) {
969 buffer_info
->skb
= skb
;
973 /* adjust length to remove Ethernet CRC */
974 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
975 /* If configured to store CRC, don't subtract FCS,
976 * but keep the FCS bytes out of the total_rx_bytes
979 if (netdev
->features
& NETIF_F_RXFCS
)
985 total_rx_bytes
+= length
;
988 /* code added for copybreak, this should improve
989 * performance for small packets with large amounts
990 * of reassembly being done in the stack
992 if (length
< copybreak
) {
993 struct sk_buff
*new_skb
=
994 netdev_alloc_skb_ip_align(netdev
, length
);
996 skb_copy_to_linear_data_offset(new_skb
,
1002 /* save the skb in buffer_info as good */
1003 buffer_info
->skb
= skb
;
1006 /* else just continue with the old one */
1008 /* end copybreak code */
1009 skb_put(skb
, length
);
1011 /* Receive Checksum Offload */
1012 e1000_rx_checksum(adapter
, staterr
, skb
);
1014 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1016 e1000_receive_skb(adapter
, netdev
, skb
, staterr
,
1017 rx_desc
->wb
.upper
.vlan
);
1020 rx_desc
->wb
.upper
.status_error
&= cpu_to_le32(~0xFF);
1022 /* return some buffers to hardware, one at a time is too slow */
1023 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
1024 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1029 /* use prefetched values */
1031 buffer_info
= next_buffer
;
1033 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1035 rx_ring
->next_to_clean
= i
;
1037 cleaned_count
= e1000_desc_unused(rx_ring
);
1039 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1041 adapter
->total_rx_bytes
+= total_rx_bytes
;
1042 adapter
->total_rx_packets
+= total_rx_packets
;
1046 static void e1000_put_txbuf(struct e1000_ring
*tx_ring
,
1047 struct e1000_buffer
*buffer_info
)
1049 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
1051 if (buffer_info
->dma
) {
1052 if (buffer_info
->mapped_as_page
)
1053 dma_unmap_page(&adapter
->pdev
->dev
, buffer_info
->dma
,
1054 buffer_info
->length
, DMA_TO_DEVICE
);
1056 dma_unmap_single(&adapter
->pdev
->dev
, buffer_info
->dma
,
1057 buffer_info
->length
, DMA_TO_DEVICE
);
1058 buffer_info
->dma
= 0;
1060 if (buffer_info
->skb
) {
1061 dev_kfree_skb_any(buffer_info
->skb
);
1062 buffer_info
->skb
= NULL
;
1064 buffer_info
->time_stamp
= 0;
1067 static void e1000_print_hw_hang(struct work_struct
*work
)
1069 struct e1000_adapter
*adapter
= container_of(work
,
1070 struct e1000_adapter
,
1072 struct net_device
*netdev
= adapter
->netdev
;
1073 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1074 unsigned int i
= tx_ring
->next_to_clean
;
1075 unsigned int eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1076 struct e1000_tx_desc
*eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1077 struct e1000_hw
*hw
= &adapter
->hw
;
1078 u16 phy_status
, phy_1000t_status
, phy_ext_status
;
1081 if (test_bit(__E1000_DOWN
, &adapter
->state
))
1084 if (!adapter
->tx_hang_recheck
&& (adapter
->flags2
& FLAG2_DMA_BURST
)) {
1085 /* May be block on write-back, flush and detect again
1086 * flush pending descriptor writebacks to memory
1088 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
1089 /* execute the writes immediately */
1091 /* Due to rare timing issues, write to TIDV again to ensure
1092 * the write is successful
1094 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
1095 /* execute the writes immediately */
1097 adapter
->tx_hang_recheck
= true;
1100 /* Real hang detected */
1101 adapter
->tx_hang_recheck
= false;
1102 netif_stop_queue(netdev
);
1104 e1e_rphy(hw
, MII_BMSR
, &phy_status
);
1105 e1e_rphy(hw
, MII_STAT1000
, &phy_1000t_status
);
1106 e1e_rphy(hw
, MII_ESTATUS
, &phy_ext_status
);
1108 pci_read_config_word(adapter
->pdev
, PCI_STATUS
, &pci_status
);
1110 /* detected Hardware unit hang */
1111 e_err("Detected Hardware Unit Hang:\n"
1114 " next_to_use <%x>\n"
1115 " next_to_clean <%x>\n"
1116 "buffer_info[next_to_clean]:\n"
1117 " time_stamp <%lx>\n"
1118 " next_to_watch <%x>\n"
1120 " next_to_watch.status <%x>\n"
1123 "PHY 1000BASE-T Status <%x>\n"
1124 "PHY Extended Status <%x>\n"
1125 "PCI Status <%x>\n",
1126 readl(tx_ring
->head
), readl(tx_ring
->tail
), tx_ring
->next_to_use
,
1127 tx_ring
->next_to_clean
, tx_ring
->buffer_info
[eop
].time_stamp
,
1128 eop
, jiffies
, eop_desc
->upper
.fields
.status
, er32(STATUS
),
1129 phy_status
, phy_1000t_status
, phy_ext_status
, pci_status
);
1131 /* Suggest workaround for known h/w issue */
1132 if ((hw
->mac
.type
== e1000_pchlan
) && (er32(CTRL
) & E1000_CTRL_TFCE
))
1133 e_err("Try turning off Tx pause (flow control) via ethtool\n");
1137 * e1000e_tx_hwtstamp_work - check for Tx time stamp
1138 * @work: pointer to work struct
1140 * This work function polls the TSYNCTXCTL valid bit to determine when a
1141 * timestamp has been taken for the current stored skb. The timestamp must
1142 * be for this skb because only one such packet is allowed in the queue.
1144 static void e1000e_tx_hwtstamp_work(struct work_struct
*work
)
1146 struct e1000_adapter
*adapter
= container_of(work
, struct e1000_adapter
,
1148 struct e1000_hw
*hw
= &adapter
->hw
;
1150 if (!adapter
->tx_hwtstamp_skb
)
1153 if (er32(TSYNCTXCTL
) & E1000_TSYNCTXCTL_VALID
) {
1154 struct skb_shared_hwtstamps shhwtstamps
;
1157 txstmp
= er32(TXSTMPL
);
1158 txstmp
|= (u64
)er32(TXSTMPH
) << 32;
1160 e1000e_systim_to_hwtstamp(adapter
, &shhwtstamps
, txstmp
);
1162 skb_tstamp_tx(adapter
->tx_hwtstamp_skb
, &shhwtstamps
);
1163 dev_kfree_skb_any(adapter
->tx_hwtstamp_skb
);
1164 adapter
->tx_hwtstamp_skb
= NULL
;
1166 /* reschedule to check later */
1167 schedule_work(&adapter
->tx_hwtstamp_work
);
1172 * e1000_clean_tx_irq - Reclaim resources after transmit completes
1173 * @tx_ring: Tx descriptor ring
1175 * the return value indicates whether actual cleaning was done, there
1176 * is no guarantee that everything was cleaned
1178 static bool e1000_clean_tx_irq(struct e1000_ring
*tx_ring
)
1180 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
1181 struct net_device
*netdev
= adapter
->netdev
;
1182 struct e1000_hw
*hw
= &adapter
->hw
;
1183 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
1184 struct e1000_buffer
*buffer_info
;
1185 unsigned int i
, eop
;
1186 unsigned int count
= 0;
1187 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
1188 unsigned int bytes_compl
= 0, pkts_compl
= 0;
1190 i
= tx_ring
->next_to_clean
;
1191 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1192 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1194 while ((eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
1195 (count
< tx_ring
->count
)) {
1196 bool cleaned
= false;
1197 rmb(); /* read buffer_info after eop_desc */
1198 for (; !cleaned
; count
++) {
1199 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
1200 buffer_info
= &tx_ring
->buffer_info
[i
];
1201 cleaned
= (i
== eop
);
1204 total_tx_packets
+= buffer_info
->segs
;
1205 total_tx_bytes
+= buffer_info
->bytecount
;
1206 if (buffer_info
->skb
) {
1207 bytes_compl
+= buffer_info
->skb
->len
;
1212 e1000_put_txbuf(tx_ring
, buffer_info
);
1213 tx_desc
->upper
.data
= 0;
1216 if (i
== tx_ring
->count
)
1220 if (i
== tx_ring
->next_to_use
)
1222 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1223 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1226 tx_ring
->next_to_clean
= i
;
1228 netdev_completed_queue(netdev
, pkts_compl
, bytes_compl
);
1230 #define TX_WAKE_THRESHOLD 32
1231 if (count
&& netif_carrier_ok(netdev
) &&
1232 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
1233 /* Make sure that anybody stopping the queue after this
1234 * sees the new next_to_clean.
1238 if (netif_queue_stopped(netdev
) &&
1239 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
1240 netif_wake_queue(netdev
);
1241 ++adapter
->restart_queue
;
1245 if (adapter
->detect_tx_hung
) {
1246 /* Detect a transmit hang in hardware, this serializes the
1247 * check with the clearing of time_stamp and movement of i
1249 adapter
->detect_tx_hung
= false;
1250 if (tx_ring
->buffer_info
[i
].time_stamp
&&
1251 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
1252 + (adapter
->tx_timeout_factor
* HZ
)) &&
1253 !(er32(STATUS
) & E1000_STATUS_TXOFF
))
1254 schedule_work(&adapter
->print_hang_task
);
1256 adapter
->tx_hang_recheck
= false;
1258 adapter
->total_tx_bytes
+= total_tx_bytes
;
1259 adapter
->total_tx_packets
+= total_tx_packets
;
1260 return count
< tx_ring
->count
;
1264 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
1265 * @rx_ring: Rx descriptor ring
1267 * the return value indicates whether actual cleaning was done, there
1268 * is no guarantee that everything was cleaned
1270 static bool e1000_clean_rx_irq_ps(struct e1000_ring
*rx_ring
, int *work_done
,
1273 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1274 struct e1000_hw
*hw
= &adapter
->hw
;
1275 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
1276 struct net_device
*netdev
= adapter
->netdev
;
1277 struct pci_dev
*pdev
= adapter
->pdev
;
1278 struct e1000_buffer
*buffer_info
, *next_buffer
;
1279 struct e1000_ps_page
*ps_page
;
1280 struct sk_buff
*skb
;
1282 u32 length
, staterr
;
1283 int cleaned_count
= 0;
1284 bool cleaned
= false;
1285 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
1287 i
= rx_ring
->next_to_clean
;
1288 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
1289 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1290 buffer_info
= &rx_ring
->buffer_info
[i
];
1292 while (staterr
& E1000_RXD_STAT_DD
) {
1293 if (*work_done
>= work_to_do
)
1296 skb
= buffer_info
->skb
;
1297 rmb(); /* read descriptor and rx_buffer_info after status DD */
1299 /* in the packet split case this is header only */
1300 prefetch(skb
->data
- NET_IP_ALIGN
);
1303 if (i
== rx_ring
->count
)
1305 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
1308 next_buffer
= &rx_ring
->buffer_info
[i
];
1312 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1313 adapter
->rx_ps_bsize0
, DMA_FROM_DEVICE
);
1314 buffer_info
->dma
= 0;
1316 /* see !EOP comment in other Rx routine */
1317 if (!(staterr
& E1000_RXD_STAT_EOP
))
1318 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
1320 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
1321 e_dbg("Packet Split buffers didn't pick up the full packet\n");
1322 dev_kfree_skb_irq(skb
);
1323 if (staterr
& E1000_RXD_STAT_EOP
)
1324 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1328 if (unlikely((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
1329 !(netdev
->features
& NETIF_F_RXALL
))) {
1330 dev_kfree_skb_irq(skb
);
1334 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
1337 e_dbg("Last part of the packet spanning multiple descriptors\n");
1338 dev_kfree_skb_irq(skb
);
1343 skb_put(skb
, length
);
1346 /* this looks ugly, but it seems compiler issues make
1347 * it more efficient than reusing j
1349 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
1351 /* page alloc/put takes too long and effects small
1352 * packet throughput, so unsplit small packets and
1353 * save the alloc/put only valid in softirq (napi)
1354 * context to call kmap_*
1356 if (l1
&& (l1
<= copybreak
) &&
1357 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
1360 ps_page
= &buffer_info
->ps_pages
[0];
1362 /* there is no documentation about how to call
1363 * kmap_atomic, so we can't hold the mapping
1366 dma_sync_single_for_cpu(&pdev
->dev
,
1370 vaddr
= kmap_atomic(ps_page
->page
);
1371 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
1372 kunmap_atomic(vaddr
);
1373 dma_sync_single_for_device(&pdev
->dev
,
1378 /* remove the CRC */
1379 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
1380 if (!(netdev
->features
& NETIF_F_RXFCS
))
1389 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1390 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
1394 ps_page
= &buffer_info
->ps_pages
[j
];
1395 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1398 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
1399 ps_page
->page
= NULL
;
1401 skb
->data_len
+= length
;
1402 skb
->truesize
+= PAGE_SIZE
;
1405 /* strip the ethernet crc, problem is we're using pages now so
1406 * this whole operation can get a little cpu intensive
1408 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
1409 if (!(netdev
->features
& NETIF_F_RXFCS
))
1410 pskb_trim(skb
, skb
->len
- 4);
1414 total_rx_bytes
+= skb
->len
;
1417 e1000_rx_checksum(adapter
, staterr
, skb
);
1419 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1421 if (rx_desc
->wb
.upper
.header_status
&
1422 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
1423 adapter
->rx_hdr_split
++;
1425 e1000_receive_skb(adapter
, netdev
, skb
, staterr
,
1426 rx_desc
->wb
.middle
.vlan
);
1429 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
1430 buffer_info
->skb
= NULL
;
1432 /* return some buffers to hardware, one at a time is too slow */
1433 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
1434 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1439 /* use prefetched values */
1441 buffer_info
= next_buffer
;
1443 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1445 rx_ring
->next_to_clean
= i
;
1447 cleaned_count
= e1000_desc_unused(rx_ring
);
1449 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1451 adapter
->total_rx_bytes
+= total_rx_bytes
;
1452 adapter
->total_rx_packets
+= total_rx_packets
;
1457 * e1000_consume_page - helper function
1459 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
1464 skb
->data_len
+= length
;
1465 skb
->truesize
+= PAGE_SIZE
;
1469 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1470 * @adapter: board private structure
1472 * the return value indicates whether actual cleaning was done, there
1473 * is no guarantee that everything was cleaned
1475 static bool e1000_clean_jumbo_rx_irq(struct e1000_ring
*rx_ring
, int *work_done
,
1478 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1479 struct net_device
*netdev
= adapter
->netdev
;
1480 struct pci_dev
*pdev
= adapter
->pdev
;
1481 union e1000_rx_desc_extended
*rx_desc
, *next_rxd
;
1482 struct e1000_buffer
*buffer_info
, *next_buffer
;
1483 u32 length
, staterr
;
1485 int cleaned_count
= 0;
1486 bool cleaned
= false;
1487 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
1488 struct skb_shared_info
*shinfo
;
1490 i
= rx_ring
->next_to_clean
;
1491 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
1492 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1493 buffer_info
= &rx_ring
->buffer_info
[i
];
1495 while (staterr
& E1000_RXD_STAT_DD
) {
1496 struct sk_buff
*skb
;
1498 if (*work_done
>= work_to_do
)
1501 rmb(); /* read descriptor and rx_buffer_info after status DD */
1503 skb
= buffer_info
->skb
;
1504 buffer_info
->skb
= NULL
;
1507 if (i
== rx_ring
->count
)
1509 next_rxd
= E1000_RX_DESC_EXT(*rx_ring
, i
);
1512 next_buffer
= &rx_ring
->buffer_info
[i
];
1516 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
, PAGE_SIZE
,
1518 buffer_info
->dma
= 0;
1520 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
1522 /* errors is only valid for DD + EOP descriptors */
1523 if (unlikely((staterr
& E1000_RXD_STAT_EOP
) &&
1524 ((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
1525 !(netdev
->features
& NETIF_F_RXALL
)))) {
1526 /* recycle both page and skb */
1527 buffer_info
->skb
= skb
;
1528 /* an error means any chain goes out the window too */
1529 if (rx_ring
->rx_skb_top
)
1530 dev_kfree_skb_irq(rx_ring
->rx_skb_top
);
1531 rx_ring
->rx_skb_top
= NULL
;
1534 #define rxtop (rx_ring->rx_skb_top)
1535 if (!(staterr
& E1000_RXD_STAT_EOP
)) {
1536 /* this descriptor is only the beginning (or middle) */
1538 /* this is the beginning of a chain */
1540 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
1543 /* this is the middle of a chain */
1544 shinfo
= skb_shinfo(rxtop
);
1545 skb_fill_page_desc(rxtop
, shinfo
->nr_frags
,
1546 buffer_info
->page
, 0,
1548 /* re-use the skb, only consumed the page */
1549 buffer_info
->skb
= skb
;
1551 e1000_consume_page(buffer_info
, rxtop
, length
);
1555 /* end of the chain */
1556 shinfo
= skb_shinfo(rxtop
);
1557 skb_fill_page_desc(rxtop
, shinfo
->nr_frags
,
1558 buffer_info
->page
, 0,
1560 /* re-use the current skb, we only consumed the
1563 buffer_info
->skb
= skb
;
1566 e1000_consume_page(buffer_info
, skb
, length
);
1568 /* no chain, got EOP, this buf is the packet
1569 * copybreak to save the put_page/alloc_page
1571 if (length
<= copybreak
&&
1572 skb_tailroom(skb
) >= length
) {
1574 vaddr
= kmap_atomic(buffer_info
->page
);
1575 memcpy(skb_tail_pointer(skb
), vaddr
,
1577 kunmap_atomic(vaddr
);
1578 /* re-use the page, so don't erase
1581 skb_put(skb
, length
);
1583 skb_fill_page_desc(skb
, 0,
1584 buffer_info
->page
, 0,
1586 e1000_consume_page(buffer_info
, skb
,
1592 /* Receive Checksum Offload */
1593 e1000_rx_checksum(adapter
, staterr
, skb
);
1595 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1597 /* probably a little skewed due to removing CRC */
1598 total_rx_bytes
+= skb
->len
;
1601 /* eth type trans needs skb->data to point to something */
1602 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1603 e_err("pskb_may_pull failed.\n");
1604 dev_kfree_skb_irq(skb
);
1608 e1000_receive_skb(adapter
, netdev
, skb
, staterr
,
1609 rx_desc
->wb
.upper
.vlan
);
1612 rx_desc
->wb
.upper
.status_error
&= cpu_to_le32(~0xFF);
1614 /* return some buffers to hardware, one at a time is too slow */
1615 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1616 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1621 /* use prefetched values */
1623 buffer_info
= next_buffer
;
1625 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1627 rx_ring
->next_to_clean
= i
;
1629 cleaned_count
= e1000_desc_unused(rx_ring
);
1631 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1633 adapter
->total_rx_bytes
+= total_rx_bytes
;
1634 adapter
->total_rx_packets
+= total_rx_packets
;
1639 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1640 * @rx_ring: Rx descriptor ring
1642 static void e1000_clean_rx_ring(struct e1000_ring
*rx_ring
)
1644 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1645 struct e1000_buffer
*buffer_info
;
1646 struct e1000_ps_page
*ps_page
;
1647 struct pci_dev
*pdev
= adapter
->pdev
;
1650 /* Free all the Rx ring sk_buffs */
1651 for (i
= 0; i
< rx_ring
->count
; i
++) {
1652 buffer_info
= &rx_ring
->buffer_info
[i
];
1653 if (buffer_info
->dma
) {
1654 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1655 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1656 adapter
->rx_buffer_len
,
1658 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1659 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
,
1660 PAGE_SIZE
, DMA_FROM_DEVICE
);
1661 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1662 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1663 adapter
->rx_ps_bsize0
,
1665 buffer_info
->dma
= 0;
1668 if (buffer_info
->page
) {
1669 put_page(buffer_info
->page
);
1670 buffer_info
->page
= NULL
;
1673 if (buffer_info
->skb
) {
1674 dev_kfree_skb(buffer_info
->skb
);
1675 buffer_info
->skb
= NULL
;
1678 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1679 ps_page
= &buffer_info
->ps_pages
[j
];
1682 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1685 put_page(ps_page
->page
);
1686 ps_page
->page
= NULL
;
1690 /* there also may be some cached data from a chained receive */
1691 if (rx_ring
->rx_skb_top
) {
1692 dev_kfree_skb(rx_ring
->rx_skb_top
);
1693 rx_ring
->rx_skb_top
= NULL
;
1696 /* Zero out the descriptor ring */
1697 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1699 rx_ring
->next_to_clean
= 0;
1700 rx_ring
->next_to_use
= 0;
1701 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1703 writel(0, rx_ring
->head
);
1704 if (rx_ring
->adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
1705 e1000e_update_rdt_wa(rx_ring
, 0);
1707 writel(0, rx_ring
->tail
);
1710 static void e1000e_downshift_workaround(struct work_struct
*work
)
1712 struct e1000_adapter
*adapter
= container_of(work
,
1713 struct e1000_adapter
,
1716 if (test_bit(__E1000_DOWN
, &adapter
->state
))
1719 e1000e_gig_downshift_workaround_ich8lan(&adapter
->hw
);
1723 * e1000_intr_msi - Interrupt Handler
1724 * @irq: interrupt number
1725 * @data: pointer to a network interface device structure
1727 static irqreturn_t
e1000_intr_msi(int __always_unused irq
, void *data
)
1729 struct net_device
*netdev
= data
;
1730 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1731 struct e1000_hw
*hw
= &adapter
->hw
;
1732 u32 icr
= er32(ICR
);
1734 /* read ICR disables interrupts using IAM */
1735 if (icr
& E1000_ICR_LSC
) {
1736 hw
->mac
.get_link_status
= true;
1737 /* ICH8 workaround-- Call gig speed drop workaround on cable
1738 * disconnect (LSC) before accessing any PHY registers
1740 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1741 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1742 schedule_work(&adapter
->downshift_task
);
1744 /* 80003ES2LAN workaround-- For packet buffer work-around on
1745 * link down event; disable receives here in the ISR and reset
1746 * adapter in watchdog
1748 if (netif_carrier_ok(netdev
) &&
1749 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1750 /* disable receives */
1751 u32 rctl
= er32(RCTL
);
1752 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1753 adapter
->flags
|= FLAG_RESTART_NOW
;
1755 /* guard against interrupt when we're going down */
1756 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1757 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1760 /* Reset on uncorrectable ECC error */
1761 if ((icr
& E1000_ICR_ECCER
) && (hw
->mac
.type
== e1000_pch_lpt
)) {
1762 u32 pbeccsts
= er32(PBECCSTS
);
1764 adapter
->corr_errors
+=
1765 pbeccsts
& E1000_PBECCSTS_CORR_ERR_CNT_MASK
;
1766 adapter
->uncorr_errors
+=
1767 (pbeccsts
& E1000_PBECCSTS_UNCORR_ERR_CNT_MASK
) >>
1768 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT
;
1770 /* Do the reset outside of interrupt context */
1771 schedule_work(&adapter
->reset_task
);
1773 /* return immediately since reset is imminent */
1777 if (napi_schedule_prep(&adapter
->napi
)) {
1778 adapter
->total_tx_bytes
= 0;
1779 adapter
->total_tx_packets
= 0;
1780 adapter
->total_rx_bytes
= 0;
1781 adapter
->total_rx_packets
= 0;
1782 __napi_schedule(&adapter
->napi
);
1789 * e1000_intr - Interrupt Handler
1790 * @irq: interrupt number
1791 * @data: pointer to a network interface device structure
1793 static irqreturn_t
e1000_intr(int __always_unused irq
, void *data
)
1795 struct net_device
*netdev
= data
;
1796 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1797 struct e1000_hw
*hw
= &adapter
->hw
;
1798 u32 rctl
, icr
= er32(ICR
);
1800 if (!icr
|| test_bit(__E1000_DOWN
, &adapter
->state
))
1801 return IRQ_NONE
; /* Not our interrupt */
1803 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1804 * not set, then the adapter didn't send an interrupt
1806 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1809 /* Interrupt Auto-Mask...upon reading ICR,
1810 * interrupts are masked. No need for the
1814 if (icr
& E1000_ICR_LSC
) {
1815 hw
->mac
.get_link_status
= true;
1816 /* ICH8 workaround-- Call gig speed drop workaround on cable
1817 * disconnect (LSC) before accessing any PHY registers
1819 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1820 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1821 schedule_work(&adapter
->downshift_task
);
1823 /* 80003ES2LAN workaround--
1824 * For packet buffer work-around on link down event;
1825 * disable receives here in the ISR and
1826 * reset adapter in watchdog
1828 if (netif_carrier_ok(netdev
) &&
1829 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1830 /* disable receives */
1832 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1833 adapter
->flags
|= FLAG_RESTART_NOW
;
1835 /* guard against interrupt when we're going down */
1836 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1837 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1840 /* Reset on uncorrectable ECC error */
1841 if ((icr
& E1000_ICR_ECCER
) && (hw
->mac
.type
== e1000_pch_lpt
)) {
1842 u32 pbeccsts
= er32(PBECCSTS
);
1844 adapter
->corr_errors
+=
1845 pbeccsts
& E1000_PBECCSTS_CORR_ERR_CNT_MASK
;
1846 adapter
->uncorr_errors
+=
1847 (pbeccsts
& E1000_PBECCSTS_UNCORR_ERR_CNT_MASK
) >>
1848 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT
;
1850 /* Do the reset outside of interrupt context */
1851 schedule_work(&adapter
->reset_task
);
1853 /* return immediately since reset is imminent */
1857 if (napi_schedule_prep(&adapter
->napi
)) {
1858 adapter
->total_tx_bytes
= 0;
1859 adapter
->total_tx_packets
= 0;
1860 adapter
->total_rx_bytes
= 0;
1861 adapter
->total_rx_packets
= 0;
1862 __napi_schedule(&adapter
->napi
);
1868 static irqreturn_t
e1000_msix_other(int __always_unused irq
, void *data
)
1870 struct net_device
*netdev
= data
;
1871 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1872 struct e1000_hw
*hw
= &adapter
->hw
;
1873 u32 icr
= er32(ICR
);
1875 if (!(icr
& E1000_ICR_INT_ASSERTED
)) {
1876 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1877 ew32(IMS
, E1000_IMS_OTHER
);
1881 if (icr
& adapter
->eiac_mask
)
1882 ew32(ICS
, (icr
& adapter
->eiac_mask
));
1884 if (icr
& E1000_ICR_OTHER
) {
1885 if (!(icr
& E1000_ICR_LSC
))
1886 goto no_link_interrupt
;
1887 hw
->mac
.get_link_status
= true;
1888 /* guard against interrupt when we're going down */
1889 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1890 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1894 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1895 ew32(IMS
, E1000_IMS_LSC
| E1000_IMS_OTHER
);
1900 static irqreturn_t
e1000_intr_msix_tx(int __always_unused irq
, void *data
)
1902 struct net_device
*netdev
= data
;
1903 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1904 struct e1000_hw
*hw
= &adapter
->hw
;
1905 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1907 adapter
->total_tx_bytes
= 0;
1908 adapter
->total_tx_packets
= 0;
1910 if (!e1000_clean_tx_irq(tx_ring
))
1911 /* Ring was not completely cleaned, so fire another interrupt */
1912 ew32(ICS
, tx_ring
->ims_val
);
1917 static irqreturn_t
e1000_intr_msix_rx(int __always_unused irq
, void *data
)
1919 struct net_device
*netdev
= data
;
1920 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1921 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1923 /* Write the ITR value calculated at the end of the
1924 * previous interrupt.
1926 if (rx_ring
->set_itr
) {
1927 writel(1000000000 / (rx_ring
->itr_val
* 256),
1928 rx_ring
->itr_register
);
1929 rx_ring
->set_itr
= 0;
1932 if (napi_schedule_prep(&adapter
->napi
)) {
1933 adapter
->total_rx_bytes
= 0;
1934 adapter
->total_rx_packets
= 0;
1935 __napi_schedule(&adapter
->napi
);
1941 * e1000_configure_msix - Configure MSI-X hardware
1943 * e1000_configure_msix sets up the hardware to properly
1944 * generate MSI-X interrupts.
1946 static void e1000_configure_msix(struct e1000_adapter
*adapter
)
1948 struct e1000_hw
*hw
= &adapter
->hw
;
1949 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1950 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1952 u32 ctrl_ext
, ivar
= 0;
1954 adapter
->eiac_mask
= 0;
1956 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1957 if (hw
->mac
.type
== e1000_82574
) {
1958 u32 rfctl
= er32(RFCTL
);
1959 rfctl
|= E1000_RFCTL_ACK_DIS
;
1963 /* Configure Rx vector */
1964 rx_ring
->ims_val
= E1000_IMS_RXQ0
;
1965 adapter
->eiac_mask
|= rx_ring
->ims_val
;
1966 if (rx_ring
->itr_val
)
1967 writel(1000000000 / (rx_ring
->itr_val
* 256),
1968 rx_ring
->itr_register
);
1970 writel(1, rx_ring
->itr_register
);
1971 ivar
= E1000_IVAR_INT_ALLOC_VALID
| vector
;
1973 /* Configure Tx vector */
1974 tx_ring
->ims_val
= E1000_IMS_TXQ0
;
1976 if (tx_ring
->itr_val
)
1977 writel(1000000000 / (tx_ring
->itr_val
* 256),
1978 tx_ring
->itr_register
);
1980 writel(1, tx_ring
->itr_register
);
1981 adapter
->eiac_mask
|= tx_ring
->ims_val
;
1982 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 8);
1984 /* set vector for Other Causes, e.g. link changes */
1986 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 16);
1987 if (rx_ring
->itr_val
)
1988 writel(1000000000 / (rx_ring
->itr_val
* 256),
1989 hw
->hw_addr
+ E1000_EITR_82574(vector
));
1991 writel(1, hw
->hw_addr
+ E1000_EITR_82574(vector
));
1993 /* Cause Tx interrupts on every write back */
1998 /* enable MSI-X PBA support */
1999 ctrl_ext
= er32(CTRL_EXT
);
2000 ctrl_ext
|= E1000_CTRL_EXT_PBA_CLR
;
2002 /* Auto-Mask Other interrupts upon ICR read */
2003 ew32(IAM
, ~E1000_EIAC_MASK_82574
| E1000_IMS_OTHER
);
2004 ctrl_ext
|= E1000_CTRL_EXT_EIAME
;
2005 ew32(CTRL_EXT
, ctrl_ext
);
2009 void e1000e_reset_interrupt_capability(struct e1000_adapter
*adapter
)
2011 if (adapter
->msix_entries
) {
2012 pci_disable_msix(adapter
->pdev
);
2013 kfree(adapter
->msix_entries
);
2014 adapter
->msix_entries
= NULL
;
2015 } else if (adapter
->flags
& FLAG_MSI_ENABLED
) {
2016 pci_disable_msi(adapter
->pdev
);
2017 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
2022 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
2024 * Attempt to configure interrupts using the best available
2025 * capabilities of the hardware and kernel.
2027 void e1000e_set_interrupt_capability(struct e1000_adapter
*adapter
)
2032 switch (adapter
->int_mode
) {
2033 case E1000E_INT_MODE_MSIX
:
2034 if (adapter
->flags
& FLAG_HAS_MSIX
) {
2035 adapter
->num_vectors
= 3; /* RxQ0, TxQ0 and other */
2036 adapter
->msix_entries
= kcalloc(adapter
->num_vectors
,
2040 if (adapter
->msix_entries
) {
2041 for (i
= 0; i
< adapter
->num_vectors
; i
++)
2042 adapter
->msix_entries
[i
].entry
= i
;
2044 err
= pci_enable_msix(adapter
->pdev
,
2045 adapter
->msix_entries
,
2046 adapter
->num_vectors
);
2050 /* MSI-X failed, so fall through and try MSI */
2051 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n");
2052 e1000e_reset_interrupt_capability(adapter
);
2054 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
2056 case E1000E_INT_MODE_MSI
:
2057 if (!pci_enable_msi(adapter
->pdev
)) {
2058 adapter
->flags
|= FLAG_MSI_ENABLED
;
2060 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
2061 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n");
2064 case E1000E_INT_MODE_LEGACY
:
2065 /* Don't do anything; this is the system default */
2069 /* store the number of vectors being used */
2070 adapter
->num_vectors
= 1;
2074 * e1000_request_msix - Initialize MSI-X interrupts
2076 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
2079 static int e1000_request_msix(struct e1000_adapter
*adapter
)
2081 struct net_device
*netdev
= adapter
->netdev
;
2082 int err
= 0, vector
= 0;
2084 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
2085 snprintf(adapter
->rx_ring
->name
,
2086 sizeof(adapter
->rx_ring
->name
) - 1,
2087 "%s-rx-0", netdev
->name
);
2089 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
2090 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2091 e1000_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
2095 adapter
->rx_ring
->itr_register
= adapter
->hw
.hw_addr
+
2096 E1000_EITR_82574(vector
);
2097 adapter
->rx_ring
->itr_val
= adapter
->itr
;
2100 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
2101 snprintf(adapter
->tx_ring
->name
,
2102 sizeof(adapter
->tx_ring
->name
) - 1,
2103 "%s-tx-0", netdev
->name
);
2105 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
2106 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2107 e1000_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
2111 adapter
->tx_ring
->itr_register
= adapter
->hw
.hw_addr
+
2112 E1000_EITR_82574(vector
);
2113 adapter
->tx_ring
->itr_val
= adapter
->itr
;
2116 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2117 e1000_msix_other
, 0, netdev
->name
, netdev
);
2121 e1000_configure_msix(adapter
);
2127 * e1000_request_irq - initialize interrupts
2129 * Attempts to configure interrupts using the best available
2130 * capabilities of the hardware and kernel.
2132 static int e1000_request_irq(struct e1000_adapter
*adapter
)
2134 struct net_device
*netdev
= adapter
->netdev
;
2137 if (adapter
->msix_entries
) {
2138 err
= e1000_request_msix(adapter
);
2141 /* fall back to MSI */
2142 e1000e_reset_interrupt_capability(adapter
);
2143 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
2144 e1000e_set_interrupt_capability(adapter
);
2146 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
2147 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi
, 0,
2148 netdev
->name
, netdev
);
2152 /* fall back to legacy interrupt */
2153 e1000e_reset_interrupt_capability(adapter
);
2154 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
2157 err
= request_irq(adapter
->pdev
->irq
, e1000_intr
, IRQF_SHARED
,
2158 netdev
->name
, netdev
);
2160 e_err("Unable to allocate interrupt, Error: %d\n", err
);
2165 static void e1000_free_irq(struct e1000_adapter
*adapter
)
2167 struct net_device
*netdev
= adapter
->netdev
;
2169 if (adapter
->msix_entries
) {
2172 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2175 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2178 /* Other Causes interrupt vector */
2179 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2183 free_irq(adapter
->pdev
->irq
, netdev
);
2187 * e1000_irq_disable - Mask off interrupt generation on the NIC
2189 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
2191 struct e1000_hw
*hw
= &adapter
->hw
;
2194 if (adapter
->msix_entries
)
2195 ew32(EIAC_82574
, 0);
2198 if (adapter
->msix_entries
) {
2200 for (i
= 0; i
< adapter
->num_vectors
; i
++)
2201 synchronize_irq(adapter
->msix_entries
[i
].vector
);
2203 synchronize_irq(adapter
->pdev
->irq
);
2208 * e1000_irq_enable - Enable default interrupt generation settings
2210 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
2212 struct e1000_hw
*hw
= &adapter
->hw
;
2214 if (adapter
->msix_entries
) {
2215 ew32(EIAC_82574
, adapter
->eiac_mask
& E1000_EIAC_MASK_82574
);
2216 ew32(IMS
, adapter
->eiac_mask
| E1000_IMS_OTHER
| E1000_IMS_LSC
);
2217 } else if (hw
->mac
.type
== e1000_pch_lpt
) {
2218 ew32(IMS
, IMS_ENABLE_MASK
| E1000_IMS_ECCER
);
2220 ew32(IMS
, IMS_ENABLE_MASK
);
2226 * e1000e_get_hw_control - get control of the h/w from f/w
2227 * @adapter: address of board private structure
2229 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2230 * For ASF and Pass Through versions of f/w this means that
2231 * the driver is loaded. For AMT version (only with 82573)
2232 * of the f/w this means that the network i/f is open.
2234 void e1000e_get_hw_control(struct e1000_adapter
*adapter
)
2236 struct e1000_hw
*hw
= &adapter
->hw
;
2240 /* Let firmware know the driver has taken over */
2241 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2243 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
2244 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2245 ctrl_ext
= er32(CTRL_EXT
);
2246 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
2251 * e1000e_release_hw_control - release control of the h/w to f/w
2252 * @adapter: address of board private structure
2254 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2255 * For ASF and Pass Through versions of f/w this means that the
2256 * driver is no longer loaded. For AMT version (only with 82573) i
2257 * of the f/w this means that the network i/f is closed.
2260 void e1000e_release_hw_control(struct e1000_adapter
*adapter
)
2262 struct e1000_hw
*hw
= &adapter
->hw
;
2266 /* Let firmware taken over control of h/w */
2267 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2269 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
2270 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2271 ctrl_ext
= er32(CTRL_EXT
);
2272 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
2277 * e1000_alloc_ring_dma - allocate memory for a ring structure
2279 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
2280 struct e1000_ring
*ring
)
2282 struct pci_dev
*pdev
= adapter
->pdev
;
2284 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
2293 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
2294 * @tx_ring: Tx descriptor ring
2296 * Return 0 on success, negative on failure
2298 int e1000e_setup_tx_resources(struct e1000_ring
*tx_ring
)
2300 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2301 int err
= -ENOMEM
, size
;
2303 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2304 tx_ring
->buffer_info
= vzalloc(size
);
2305 if (!tx_ring
->buffer_info
)
2308 /* round up to nearest 4K */
2309 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2310 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
2312 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
2316 tx_ring
->next_to_use
= 0;
2317 tx_ring
->next_to_clean
= 0;
2321 vfree(tx_ring
->buffer_info
);
2322 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2327 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
2328 * @rx_ring: Rx descriptor ring
2330 * Returns 0 on success, negative on failure
2332 int e1000e_setup_rx_resources(struct e1000_ring
*rx_ring
)
2334 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
2335 struct e1000_buffer
*buffer_info
;
2336 int i
, size
, desc_len
, err
= -ENOMEM
;
2338 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2339 rx_ring
->buffer_info
= vzalloc(size
);
2340 if (!rx_ring
->buffer_info
)
2343 for (i
= 0; i
< rx_ring
->count
; i
++) {
2344 buffer_info
= &rx_ring
->buffer_info
[i
];
2345 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
2346 sizeof(struct e1000_ps_page
),
2348 if (!buffer_info
->ps_pages
)
2352 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
2354 /* Round up to nearest 4K */
2355 rx_ring
->size
= rx_ring
->count
* desc_len
;
2356 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
2358 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
2362 rx_ring
->next_to_clean
= 0;
2363 rx_ring
->next_to_use
= 0;
2364 rx_ring
->rx_skb_top
= NULL
;
2369 for (i
= 0; i
< rx_ring
->count
; i
++) {
2370 buffer_info
= &rx_ring
->buffer_info
[i
];
2371 kfree(buffer_info
->ps_pages
);
2374 vfree(rx_ring
->buffer_info
);
2375 e_err("Unable to allocate memory for the receive descriptor ring\n");
2380 * e1000_clean_tx_ring - Free Tx Buffers
2381 * @tx_ring: Tx descriptor ring
2383 static void e1000_clean_tx_ring(struct e1000_ring
*tx_ring
)
2385 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2386 struct e1000_buffer
*buffer_info
;
2390 for (i
= 0; i
< tx_ring
->count
; i
++) {
2391 buffer_info
= &tx_ring
->buffer_info
[i
];
2392 e1000_put_txbuf(tx_ring
, buffer_info
);
2395 netdev_reset_queue(adapter
->netdev
);
2396 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2397 memset(tx_ring
->buffer_info
, 0, size
);
2399 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2401 tx_ring
->next_to_use
= 0;
2402 tx_ring
->next_to_clean
= 0;
2404 writel(0, tx_ring
->head
);
2405 if (tx_ring
->adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
2406 e1000e_update_tdt_wa(tx_ring
, 0);
2408 writel(0, tx_ring
->tail
);
2412 * e1000e_free_tx_resources - Free Tx Resources per Queue
2413 * @tx_ring: Tx descriptor ring
2415 * Free all transmit software resources
2417 void e1000e_free_tx_resources(struct e1000_ring
*tx_ring
)
2419 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2420 struct pci_dev
*pdev
= adapter
->pdev
;
2422 e1000_clean_tx_ring(tx_ring
);
2424 vfree(tx_ring
->buffer_info
);
2425 tx_ring
->buffer_info
= NULL
;
2427 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
2429 tx_ring
->desc
= NULL
;
2433 * e1000e_free_rx_resources - Free Rx Resources
2434 * @rx_ring: Rx descriptor ring
2436 * Free all receive software resources
2438 void e1000e_free_rx_resources(struct e1000_ring
*rx_ring
)
2440 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
2441 struct pci_dev
*pdev
= adapter
->pdev
;
2444 e1000_clean_rx_ring(rx_ring
);
2446 for (i
= 0; i
< rx_ring
->count
; i
++)
2447 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
2449 vfree(rx_ring
->buffer_info
);
2450 rx_ring
->buffer_info
= NULL
;
2452 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
2454 rx_ring
->desc
= NULL
;
2458 * e1000_update_itr - update the dynamic ITR value based on statistics
2459 * @adapter: pointer to adapter
2460 * @itr_setting: current adapter->itr
2461 * @packets: the number of packets during this measurement interval
2462 * @bytes: the number of bytes during this measurement interval
2464 * Stores a new ITR value based on packets and byte
2465 * counts during the last interrupt. The advantage of per interrupt
2466 * computation is faster updates and more accurate ITR for the current
2467 * traffic pattern. Constants in this function were computed
2468 * based on theoretical maximum wire speed and thresholds were set based
2469 * on testing data as well as attempting to minimize response time
2470 * while increasing bulk throughput. This functionality is controlled
2471 * by the InterruptThrottleRate module parameter.
2473 static unsigned int e1000_update_itr(u16 itr_setting
, int packets
, int bytes
)
2475 unsigned int retval
= itr_setting
;
2480 switch (itr_setting
) {
2481 case lowest_latency
:
2482 /* handle TSO and jumbo frames */
2483 if (bytes
/ packets
> 8000)
2484 retval
= bulk_latency
;
2485 else if ((packets
< 5) && (bytes
> 512))
2486 retval
= low_latency
;
2488 case low_latency
: /* 50 usec aka 20000 ints/s */
2489 if (bytes
> 10000) {
2490 /* this if handles the TSO accounting */
2491 if (bytes
/ packets
> 8000)
2492 retval
= bulk_latency
;
2493 else if ((packets
< 10) || ((bytes
/ packets
) > 1200))
2494 retval
= bulk_latency
;
2495 else if ((packets
> 35))
2496 retval
= lowest_latency
;
2497 } else if (bytes
/ packets
> 2000) {
2498 retval
= bulk_latency
;
2499 } else if (packets
<= 2 && bytes
< 512) {
2500 retval
= lowest_latency
;
2503 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2504 if (bytes
> 25000) {
2506 retval
= low_latency
;
2507 } else if (bytes
< 6000) {
2508 retval
= low_latency
;
2516 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2519 u32 new_itr
= adapter
->itr
;
2521 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2522 if (adapter
->link_speed
!= SPEED_1000
) {
2528 if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
2533 adapter
->tx_itr
= e1000_update_itr(adapter
->tx_itr
,
2534 adapter
->total_tx_packets
,
2535 adapter
->total_tx_bytes
);
2536 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2537 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
2538 adapter
->tx_itr
= low_latency
;
2540 adapter
->rx_itr
= e1000_update_itr(adapter
->rx_itr
,
2541 adapter
->total_rx_packets
,
2542 adapter
->total_rx_bytes
);
2543 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2544 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2545 adapter
->rx_itr
= low_latency
;
2547 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2549 /* counts and packets in update_itr are dependent on these numbers */
2550 switch (current_itr
) {
2551 case lowest_latency
:
2555 new_itr
= 20000; /* aka hwitr = ~200 */
2565 if (new_itr
!= adapter
->itr
) {
2566 /* this attempts to bias the interrupt rate towards Bulk
2567 * by adding intermediate steps when interrupt rate is
2570 new_itr
= new_itr
> adapter
->itr
?
2571 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) : new_itr
;
2572 adapter
->itr
= new_itr
;
2573 adapter
->rx_ring
->itr_val
= new_itr
;
2574 if (adapter
->msix_entries
)
2575 adapter
->rx_ring
->set_itr
= 1;
2577 e1000e_write_itr(adapter
, new_itr
);
2582 * e1000e_write_itr - write the ITR value to the appropriate registers
2583 * @adapter: address of board private structure
2584 * @itr: new ITR value to program
2586 * e1000e_write_itr determines if the adapter is in MSI-X mode
2587 * and, if so, writes the EITR registers with the ITR value.
2588 * Otherwise, it writes the ITR value into the ITR register.
2590 void e1000e_write_itr(struct e1000_adapter
*adapter
, u32 itr
)
2592 struct e1000_hw
*hw
= &adapter
->hw
;
2593 u32 new_itr
= itr
? 1000000000 / (itr
* 256) : 0;
2595 if (adapter
->msix_entries
) {
2598 for (vector
= 0; vector
< adapter
->num_vectors
; vector
++)
2599 writel(new_itr
, hw
->hw_addr
+ E1000_EITR_82574(vector
));
2606 * e1000_alloc_queues - Allocate memory for all rings
2607 * @adapter: board private structure to initialize
2609 static int e1000_alloc_queues(struct e1000_adapter
*adapter
)
2611 int size
= sizeof(struct e1000_ring
);
2613 adapter
->tx_ring
= kzalloc(size
, GFP_KERNEL
);
2614 if (!adapter
->tx_ring
)
2616 adapter
->tx_ring
->count
= adapter
->tx_ring_count
;
2617 adapter
->tx_ring
->adapter
= adapter
;
2619 adapter
->rx_ring
= kzalloc(size
, GFP_KERNEL
);
2620 if (!adapter
->rx_ring
)
2622 adapter
->rx_ring
->count
= adapter
->rx_ring_count
;
2623 adapter
->rx_ring
->adapter
= adapter
;
2627 e_err("Unable to allocate memory for queues\n");
2628 kfree(adapter
->rx_ring
);
2629 kfree(adapter
->tx_ring
);
2634 * e1000e_poll - NAPI Rx polling callback
2635 * @napi: struct associated with this polling callback
2636 * @weight: number of packets driver is allowed to process this poll
2638 static int e1000e_poll(struct napi_struct
*napi
, int weight
)
2640 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
,
2642 struct e1000_hw
*hw
= &adapter
->hw
;
2643 struct net_device
*poll_dev
= adapter
->netdev
;
2644 int tx_cleaned
= 1, work_done
= 0;
2646 adapter
= netdev_priv(poll_dev
);
2648 if (!adapter
->msix_entries
||
2649 (adapter
->rx_ring
->ims_val
& adapter
->tx_ring
->ims_val
))
2650 tx_cleaned
= e1000_clean_tx_irq(adapter
->tx_ring
);
2652 adapter
->clean_rx(adapter
->rx_ring
, &work_done
, weight
);
2657 /* If weight not fully consumed, exit the polling mode */
2658 if (work_done
< weight
) {
2659 if (adapter
->itr_setting
& 3)
2660 e1000_set_itr(adapter
);
2661 napi_complete(napi
);
2662 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
2663 if (adapter
->msix_entries
)
2664 ew32(IMS
, adapter
->rx_ring
->ims_val
);
2666 e1000_irq_enable(adapter
);
2673 static int e1000_vlan_rx_add_vid(struct net_device
*netdev
,
2674 __always_unused __be16 proto
, u16 vid
)
2676 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2677 struct e1000_hw
*hw
= &adapter
->hw
;
2680 /* don't update vlan cookie if already programmed */
2681 if ((adapter
->hw
.mng_cookie
.status
&
2682 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2683 (vid
== adapter
->mng_vlan_id
))
2686 /* add VID to filter table */
2687 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2688 index
= (vid
>> 5) & 0x7F;
2689 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2690 vfta
|= (1 << (vid
& 0x1F));
2691 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2694 set_bit(vid
, adapter
->active_vlans
);
2699 static int e1000_vlan_rx_kill_vid(struct net_device
*netdev
,
2700 __always_unused __be16 proto
, u16 vid
)
2702 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2703 struct e1000_hw
*hw
= &adapter
->hw
;
2706 if ((adapter
->hw
.mng_cookie
.status
&
2707 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2708 (vid
== adapter
->mng_vlan_id
)) {
2709 /* release control to f/w */
2710 e1000e_release_hw_control(adapter
);
2714 /* remove VID from filter table */
2715 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2716 index
= (vid
>> 5) & 0x7F;
2717 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2718 vfta
&= ~(1 << (vid
& 0x1F));
2719 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2722 clear_bit(vid
, adapter
->active_vlans
);
2728 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
2729 * @adapter: board private structure to initialize
2731 static void e1000e_vlan_filter_disable(struct e1000_adapter
*adapter
)
2733 struct net_device
*netdev
= adapter
->netdev
;
2734 struct e1000_hw
*hw
= &adapter
->hw
;
2737 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2738 /* disable VLAN receive filtering */
2740 rctl
&= ~(E1000_RCTL_VFE
| E1000_RCTL_CFIEN
);
2743 if (adapter
->mng_vlan_id
!= (u16
)E1000_MNG_VLAN_NONE
) {
2744 e1000_vlan_rx_kill_vid(netdev
, htons(ETH_P_8021Q
),
2745 adapter
->mng_vlan_id
);
2746 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2752 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
2753 * @adapter: board private structure to initialize
2755 static void e1000e_vlan_filter_enable(struct e1000_adapter
*adapter
)
2757 struct e1000_hw
*hw
= &adapter
->hw
;
2760 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2761 /* enable VLAN receive filtering */
2763 rctl
|= E1000_RCTL_VFE
;
2764 rctl
&= ~E1000_RCTL_CFIEN
;
2770 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping
2771 * @adapter: board private structure to initialize
2773 static void e1000e_vlan_strip_disable(struct e1000_adapter
*adapter
)
2775 struct e1000_hw
*hw
= &adapter
->hw
;
2778 /* disable VLAN tag insert/strip */
2780 ctrl
&= ~E1000_CTRL_VME
;
2785 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
2786 * @adapter: board private structure to initialize
2788 static void e1000e_vlan_strip_enable(struct e1000_adapter
*adapter
)
2790 struct e1000_hw
*hw
= &adapter
->hw
;
2793 /* enable VLAN tag insert/strip */
2795 ctrl
|= E1000_CTRL_VME
;
2799 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
2801 struct net_device
*netdev
= adapter
->netdev
;
2802 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
2803 u16 old_vid
= adapter
->mng_vlan_id
;
2805 if (adapter
->hw
.mng_cookie
.status
& E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
2806 e1000_vlan_rx_add_vid(netdev
, htons(ETH_P_8021Q
), vid
);
2807 adapter
->mng_vlan_id
= vid
;
2810 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) && (vid
!= old_vid
))
2811 e1000_vlan_rx_kill_vid(netdev
, htons(ETH_P_8021Q
), old_vid
);
2814 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
2818 e1000_vlan_rx_add_vid(adapter
->netdev
, htons(ETH_P_8021Q
), 0);
2820 for_each_set_bit(vid
, adapter
->active_vlans
, VLAN_N_VID
)
2821 e1000_vlan_rx_add_vid(adapter
->netdev
, htons(ETH_P_8021Q
), vid
);
2824 static void e1000_init_manageability_pt(struct e1000_adapter
*adapter
)
2826 struct e1000_hw
*hw
= &adapter
->hw
;
2827 u32 manc
, manc2h
, mdef
, i
, j
;
2829 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
2834 /* enable receiving management packets to the host. this will probably
2835 * generate destination unreachable messages from the host OS, but
2836 * the packets will be handled on SMBUS
2838 manc
|= E1000_MANC_EN_MNG2HOST
;
2839 manc2h
= er32(MANC2H
);
2841 switch (hw
->mac
.type
) {
2843 manc2h
|= (E1000_MANC2H_PORT_623
| E1000_MANC2H_PORT_664
);
2847 /* Check if IPMI pass-through decision filter already exists;
2850 for (i
= 0, j
= 0; i
< 8; i
++) {
2851 mdef
= er32(MDEF(i
));
2853 /* Ignore filters with anything other than IPMI ports */
2854 if (mdef
& ~(E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2857 /* Enable this decision filter in MANC2H */
2864 if (j
== (E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2867 /* Create new decision filter in an empty filter */
2868 for (i
= 0, j
= 0; i
< 8; i
++)
2869 if (er32(MDEF(i
)) == 0) {
2870 ew32(MDEF(i
), (E1000_MDEF_PORT_623
|
2871 E1000_MDEF_PORT_664
));
2878 e_warn("Unable to create IPMI pass-through filter\n");
2882 ew32(MANC2H
, manc2h
);
2887 * e1000_configure_tx - Configure Transmit Unit after Reset
2888 * @adapter: board private structure
2890 * Configure the Tx unit of the MAC after a reset.
2892 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
2894 struct e1000_hw
*hw
= &adapter
->hw
;
2895 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2899 /* Setup the HW Tx Head and Tail descriptor pointers */
2900 tdba
= tx_ring
->dma
;
2901 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2902 ew32(TDBAL(0), (tdba
& DMA_BIT_MASK(32)));
2903 ew32(TDBAH(0), (tdba
>> 32));
2904 ew32(TDLEN(0), tdlen
);
2907 tx_ring
->head
= adapter
->hw
.hw_addr
+ E1000_TDH(0);
2908 tx_ring
->tail
= adapter
->hw
.hw_addr
+ E1000_TDT(0);
2910 /* Set the Tx Interrupt Delay register */
2911 ew32(TIDV
, adapter
->tx_int_delay
);
2912 /* Tx irq moderation */
2913 ew32(TADV
, adapter
->tx_abs_int_delay
);
2915 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
2916 u32 txdctl
= er32(TXDCTL(0));
2917 txdctl
&= ~(E1000_TXDCTL_PTHRESH
| E1000_TXDCTL_HTHRESH
|
2918 E1000_TXDCTL_WTHRESH
);
2919 /* set up some performance related parameters to encourage the
2920 * hardware to use the bus more efficiently in bursts, depends
2921 * on the tx_int_delay to be enabled,
2922 * wthresh = 1 ==> burst write is disabled to avoid Tx stalls
2923 * hthresh = 1 ==> prefetch when one or more available
2924 * pthresh = 0x1f ==> prefetch if internal cache 31 or less
2925 * BEWARE: this seems to work but should be considered first if
2926 * there are Tx hangs or other Tx related bugs
2928 txdctl
|= E1000_TXDCTL_DMA_BURST_ENABLE
;
2929 ew32(TXDCTL(0), txdctl
);
2931 /* erratum work around: set txdctl the same for both queues */
2932 ew32(TXDCTL(1), er32(TXDCTL(0)));
2934 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
2935 tarc
= er32(TARC(0));
2936 /* set the speed mode bit, we'll clear it if we're not at
2937 * gigabit link later
2939 #define SPEED_MODE_BIT (1 << 21)
2940 tarc
|= SPEED_MODE_BIT
;
2941 ew32(TARC(0), tarc
);
2944 /* errata: program both queues to unweighted RR */
2945 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
2946 tarc
= er32(TARC(0));
2948 ew32(TARC(0), tarc
);
2949 tarc
= er32(TARC(1));
2951 ew32(TARC(1), tarc
);
2954 /* Setup Transmit Descriptor Settings for eop descriptor */
2955 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
2957 /* only set IDE if we are delaying interrupts using the timers */
2958 if (adapter
->tx_int_delay
)
2959 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
2961 /* enable Report Status bit */
2962 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
2964 hw
->mac
.ops
.config_collision_dist(hw
);
2968 * e1000_setup_rctl - configure the receive control registers
2969 * @adapter: Board private structure
2971 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2972 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2973 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
2975 struct e1000_hw
*hw
= &adapter
->hw
;
2979 /* Workaround Si errata on PCHx - configure jumbo frame flow */
2980 if ((hw
->mac
.type
>= e1000_pch2lan
) &&
2981 (adapter
->netdev
->mtu
> ETH_DATA_LEN
) &&
2982 e1000_lv_jumbo_workaround_ich8lan(hw
, true))
2983 e_dbg("failed to enable jumbo frame workaround mode\n");
2985 /* Program MC offset vector base */
2987 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
2988 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
2989 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
2990 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
2992 /* Do not Store bad packets */
2993 rctl
&= ~E1000_RCTL_SBP
;
2995 /* Enable Long Packet receive */
2996 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
2997 rctl
&= ~E1000_RCTL_LPE
;
2999 rctl
|= E1000_RCTL_LPE
;
3001 /* Some systems expect that the CRC is included in SMBUS traffic. The
3002 * hardware strips the CRC before sending to both SMBUS (BMC) and to
3003 * host memory when this is enabled
3005 if (adapter
->flags2
& FLAG2_CRC_STRIPPING
)
3006 rctl
|= E1000_RCTL_SECRC
;
3008 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
3009 if ((hw
->phy
.type
== e1000_phy_82577
) && (rctl
& E1000_RCTL_LPE
)) {
3012 e1e_rphy(hw
, PHY_REG(770, 26), &phy_data
);
3014 phy_data
|= (1 << 2);
3015 e1e_wphy(hw
, PHY_REG(770, 26), phy_data
);
3017 e1e_rphy(hw
, 22, &phy_data
);
3019 phy_data
|= (1 << 14);
3020 e1e_wphy(hw
, 0x10, 0x2823);
3021 e1e_wphy(hw
, 0x11, 0x0003);
3022 e1e_wphy(hw
, 22, phy_data
);
3025 /* Setup buffer sizes */
3026 rctl
&= ~E1000_RCTL_SZ_4096
;
3027 rctl
|= E1000_RCTL_BSEX
;
3028 switch (adapter
->rx_buffer_len
) {
3031 rctl
|= E1000_RCTL_SZ_2048
;
3032 rctl
&= ~E1000_RCTL_BSEX
;
3035 rctl
|= E1000_RCTL_SZ_4096
;
3038 rctl
|= E1000_RCTL_SZ_8192
;
3041 rctl
|= E1000_RCTL_SZ_16384
;
3045 /* Enable Extended Status in all Receive Descriptors */
3046 rfctl
= er32(RFCTL
);
3047 rfctl
|= E1000_RFCTL_EXTEN
;
3050 /* 82571 and greater support packet-split where the protocol
3051 * header is placed in skb->data and the packet data is
3052 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
3053 * In the case of a non-split, skb->data is linearly filled,
3054 * followed by the page buffers. Therefore, skb->data is
3055 * sized to hold the largest protocol header.
3057 * allocations using alloc_page take too long for regular MTU
3058 * so only enable packet split for jumbo frames
3060 * Using pages when the page size is greater than 16k wastes
3061 * a lot of memory, since we allocate 3 pages at all times
3064 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
3065 if ((pages
<= 3) && (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
3066 adapter
->rx_ps_pages
= pages
;
3068 adapter
->rx_ps_pages
= 0;
3070 if (adapter
->rx_ps_pages
) {
3073 /* Enable Packet split descriptors */
3074 rctl
|= E1000_RCTL_DTYP_PS
;
3076 psrctl
|= adapter
->rx_ps_bsize0
>> E1000_PSRCTL_BSIZE0_SHIFT
;
3078 switch (adapter
->rx_ps_pages
) {
3080 psrctl
|= PAGE_SIZE
<< E1000_PSRCTL_BSIZE3_SHIFT
;
3083 psrctl
|= PAGE_SIZE
<< E1000_PSRCTL_BSIZE2_SHIFT
;
3086 psrctl
|= PAGE_SIZE
>> E1000_PSRCTL_BSIZE1_SHIFT
;
3090 ew32(PSRCTL
, psrctl
);
3093 /* This is useful for sniffing bad packets. */
3094 if (adapter
->netdev
->features
& NETIF_F_RXALL
) {
3095 /* UPE and MPE will be handled by normal PROMISC logic
3096 * in e1000e_set_rx_mode
3098 rctl
|= (E1000_RCTL_SBP
| /* Receive bad packets */
3099 E1000_RCTL_BAM
| /* RX All Bcast Pkts */
3100 E1000_RCTL_PMCF
); /* RX All MAC Ctrl Pkts */
3102 rctl
&= ~(E1000_RCTL_VFE
| /* Disable VLAN filter */
3103 E1000_RCTL_DPF
| /* Allow filtered pause */
3104 E1000_RCTL_CFIEN
); /* Dis VLAN CFIEN Filter */
3105 /* Do not mess with E1000_CTRL_VME, it affects transmit as well,
3106 * and that breaks VLANs.
3111 /* just started the receive unit, no need to restart */
3112 adapter
->flags
&= ~FLAG_RESTART_NOW
;
3116 * e1000_configure_rx - Configure Receive Unit after Reset
3117 * @adapter: board private structure
3119 * Configure the Rx unit of the MAC after a reset.
3121 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
3123 struct e1000_hw
*hw
= &adapter
->hw
;
3124 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
3126 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
3128 if (adapter
->rx_ps_pages
) {
3129 /* this is a 32 byte descriptor */
3130 rdlen
= rx_ring
->count
*
3131 sizeof(union e1000_rx_desc_packet_split
);
3132 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
3133 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
3134 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3135 rdlen
= rx_ring
->count
* sizeof(union e1000_rx_desc_extended
);
3136 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
3137 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
3139 rdlen
= rx_ring
->count
* sizeof(union e1000_rx_desc_extended
);
3140 adapter
->clean_rx
= e1000_clean_rx_irq
;
3141 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
3144 /* disable receives while setting up the descriptors */
3146 if (!(adapter
->flags2
& FLAG2_NO_DISABLE_RX
))
3147 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3149 usleep_range(10000, 20000);
3151 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
3152 /* set the writeback threshold (only takes effect if the RDTR
3153 * is set). set GRAN=1 and write back up to 0x4 worth, and
3154 * enable prefetching of 0x20 Rx descriptors
3160 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE
);
3161 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE
);
3163 /* override the delay timers for enabling bursting, only if
3164 * the value was not set by the user via module options
3166 if (adapter
->rx_int_delay
== DEFAULT_RDTR
)
3167 adapter
->rx_int_delay
= BURST_RDTR
;
3168 if (adapter
->rx_abs_int_delay
== DEFAULT_RADV
)
3169 adapter
->rx_abs_int_delay
= BURST_RADV
;
3172 /* set the Receive Delay Timer Register */
3173 ew32(RDTR
, adapter
->rx_int_delay
);
3175 /* irq moderation */
3176 ew32(RADV
, adapter
->rx_abs_int_delay
);
3177 if ((adapter
->itr_setting
!= 0) && (adapter
->itr
!= 0))
3178 e1000e_write_itr(adapter
, adapter
->itr
);
3180 ctrl_ext
= er32(CTRL_EXT
);
3181 /* Auto-Mask interrupts upon ICR access */
3182 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
3183 ew32(IAM
, 0xffffffff);
3184 ew32(CTRL_EXT
, ctrl_ext
);
3187 /* Setup the HW Rx Head and Tail Descriptor Pointers and
3188 * the Base and Length of the Rx Descriptor Ring
3190 rdba
= rx_ring
->dma
;
3191 ew32(RDBAL(0), (rdba
& DMA_BIT_MASK(32)));
3192 ew32(RDBAH(0), (rdba
>> 32));
3193 ew32(RDLEN(0), rdlen
);
3196 rx_ring
->head
= adapter
->hw
.hw_addr
+ E1000_RDH(0);
3197 rx_ring
->tail
= adapter
->hw
.hw_addr
+ E1000_RDT(0);
3199 /* Enable Receive Checksum Offload for TCP and UDP */
3200 rxcsum
= er32(RXCSUM
);
3201 if (adapter
->netdev
->features
& NETIF_F_RXCSUM
)
3202 rxcsum
|= E1000_RXCSUM_TUOFL
;
3204 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
3205 ew32(RXCSUM
, rxcsum
);
3207 /* With jumbo frames, excessive C-state transition latencies result
3208 * in dropped transactions.
3210 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3212 ((er32(PBA
) & E1000_PBA_RXA_MASK
) * 1024 -
3213 adapter
->max_frame_size
) * 8 / 1000;
3215 if (adapter
->flags
& FLAG_IS_ICH
) {
3216 u32 rxdctl
= er32(RXDCTL(0));
3217 ew32(RXDCTL(0), rxdctl
| 0x3);
3220 pm_qos_update_request(&adapter
->netdev
->pm_qos_req
, lat
);
3222 pm_qos_update_request(&adapter
->netdev
->pm_qos_req
,
3223 PM_QOS_DEFAULT_VALUE
);
3226 /* Enable Receives */
3231 * e1000e_write_mc_addr_list - write multicast addresses to MTA
3232 * @netdev: network interface device structure
3234 * Writes multicast address list to the MTA hash table.
3235 * Returns: -ENOMEM on failure
3236 * 0 on no addresses written
3237 * X on writing X addresses to MTA
3239 static int e1000e_write_mc_addr_list(struct net_device
*netdev
)
3241 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3242 struct e1000_hw
*hw
= &adapter
->hw
;
3243 struct netdev_hw_addr
*ha
;
3247 if (netdev_mc_empty(netdev
)) {
3248 /* nothing to program, so clear mc list */
3249 hw
->mac
.ops
.update_mc_addr_list(hw
, NULL
, 0);
3253 mta_list
= kzalloc(netdev_mc_count(netdev
) * ETH_ALEN
, GFP_ATOMIC
);
3257 /* update_mc_addr_list expects a packed array of only addresses. */
3259 netdev_for_each_mc_addr(ha
, netdev
)
3260 memcpy(mta_list
+ (i
++ * ETH_ALEN
), ha
->addr
, ETH_ALEN
);
3262 hw
->mac
.ops
.update_mc_addr_list(hw
, mta_list
, i
);
3265 return netdev_mc_count(netdev
);
3269 * e1000e_write_uc_addr_list - write unicast addresses to RAR table
3270 * @netdev: network interface device structure
3272 * Writes unicast address list to the RAR table.
3273 * Returns: -ENOMEM on failure/insufficient address space
3274 * 0 on no addresses written
3275 * X on writing X addresses to the RAR table
3277 static int e1000e_write_uc_addr_list(struct net_device
*netdev
)
3279 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3280 struct e1000_hw
*hw
= &adapter
->hw
;
3281 unsigned int rar_entries
= hw
->mac
.rar_entry_count
;
3284 /* save a rar entry for our hardware address */
3287 /* save a rar entry for the LAA workaround */
3288 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
)
3291 /* return ENOMEM indicating insufficient memory for addresses */
3292 if (netdev_uc_count(netdev
) > rar_entries
)
3295 if (!netdev_uc_empty(netdev
) && rar_entries
) {
3296 struct netdev_hw_addr
*ha
;
3298 /* write the addresses in reverse order to avoid write
3301 netdev_for_each_uc_addr(ha
, netdev
) {
3304 hw
->mac
.ops
.rar_set(hw
, ha
->addr
, rar_entries
--);
3309 /* zero out the remaining RAR entries not used above */
3310 for (; rar_entries
> 0; rar_entries
--) {
3311 ew32(RAH(rar_entries
), 0);
3312 ew32(RAL(rar_entries
), 0);
3320 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set
3321 * @netdev: network interface device structure
3323 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast
3324 * address list or the network interface flags are updated. This routine is
3325 * responsible for configuring the hardware for proper unicast, multicast,
3326 * promiscuous mode, and all-multi behavior.
3328 static void e1000e_set_rx_mode(struct net_device
*netdev
)
3330 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3331 struct e1000_hw
*hw
= &adapter
->hw
;
3334 /* Check for Promiscuous and All Multicast modes */
3337 /* clear the affected bits */
3338 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3340 if (netdev
->flags
& IFF_PROMISC
) {
3341 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3342 /* Do not hardware filter VLANs in promisc mode */
3343 e1000e_vlan_filter_disable(adapter
);
3347 if (netdev
->flags
& IFF_ALLMULTI
) {
3348 rctl
|= E1000_RCTL_MPE
;
3350 /* Write addresses to the MTA, if the attempt fails
3351 * then we should just turn on promiscuous mode so
3352 * that we can at least receive multicast traffic
3354 count
= e1000e_write_mc_addr_list(netdev
);
3356 rctl
|= E1000_RCTL_MPE
;
3358 e1000e_vlan_filter_enable(adapter
);
3359 /* Write addresses to available RAR registers, if there is not
3360 * sufficient space to store all the addresses then enable
3361 * unicast promiscuous mode
3363 count
= e1000e_write_uc_addr_list(netdev
);
3365 rctl
|= E1000_RCTL_UPE
;
3370 if (netdev
->features
& NETIF_F_HW_VLAN_CTAG_RX
)
3371 e1000e_vlan_strip_enable(adapter
);
3373 e1000e_vlan_strip_disable(adapter
);
3376 static void e1000e_setup_rss_hash(struct e1000_adapter
*adapter
)
3378 struct e1000_hw
*hw
= &adapter
->hw
;
3381 static const u32 rsskey
[10] = {
3382 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0,
3383 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe
3386 /* Fill out hash function seed */
3387 for (i
= 0; i
< 10; i
++)
3388 ew32(RSSRK(i
), rsskey
[i
]);
3390 /* Direct all traffic to queue 0 */
3391 for (i
= 0; i
< 32; i
++)
3394 /* Disable raw packet checksumming so that RSS hash is placed in
3395 * descriptor on writeback.
3397 rxcsum
= er32(RXCSUM
);
3398 rxcsum
|= E1000_RXCSUM_PCSD
;
3400 ew32(RXCSUM
, rxcsum
);
3402 mrqc
= (E1000_MRQC_RSS_FIELD_IPV4
|
3403 E1000_MRQC_RSS_FIELD_IPV4_TCP
|
3404 E1000_MRQC_RSS_FIELD_IPV6
|
3405 E1000_MRQC_RSS_FIELD_IPV6_TCP
|
3406 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX
);
3412 * e1000e_get_base_timinca - get default SYSTIM time increment attributes
3413 * @adapter: board private structure
3414 * @timinca: pointer to returned time increment attributes
3416 * Get attributes for incrementing the System Time Register SYSTIML/H at
3417 * the default base frequency, and set the cyclecounter shift value.
3419 s32
e1000e_get_base_timinca(struct e1000_adapter
*adapter
, u32
*timinca
)
3421 struct e1000_hw
*hw
= &adapter
->hw
;
3422 u32 incvalue
, incperiod
, shift
;
3424 /* Make sure clock is enabled on I217 before checking the frequency */
3425 if ((hw
->mac
.type
== e1000_pch_lpt
) &&
3426 !(er32(TSYNCTXCTL
) & E1000_TSYNCTXCTL_ENABLED
) &&
3427 !(er32(TSYNCRXCTL
) & E1000_TSYNCRXCTL_ENABLED
)) {
3428 u32 fextnvm7
= er32(FEXTNVM7
);
3430 if (!(fextnvm7
& (1 << 0))) {
3431 ew32(FEXTNVM7
, fextnvm7
| (1 << 0));
3436 switch (hw
->mac
.type
) {
3439 /* On I217, the clock frequency is 25MHz or 96MHz as
3440 * indicated by the System Clock Frequency Indication
3442 if ((hw
->mac
.type
!= e1000_pch_lpt
) ||
3443 (er32(TSYNCRXCTL
) & E1000_TSYNCRXCTL_SYSCFI
)) {
3444 /* Stable 96MHz frequency */
3445 incperiod
= INCPERIOD_96MHz
;
3446 incvalue
= INCVALUE_96MHz
;
3447 shift
= INCVALUE_SHIFT_96MHz
;
3448 adapter
->cc
.shift
= shift
+ INCPERIOD_SHIFT_96MHz
;
3454 /* Stable 25MHz frequency */
3455 incperiod
= INCPERIOD_25MHz
;
3456 incvalue
= INCVALUE_25MHz
;
3457 shift
= INCVALUE_SHIFT_25MHz
;
3458 adapter
->cc
.shift
= shift
;
3464 *timinca
= ((incperiod
<< E1000_TIMINCA_INCPERIOD_SHIFT
) |
3465 ((incvalue
<< shift
) & E1000_TIMINCA_INCVALUE_MASK
));
3471 * e1000e_config_hwtstamp - configure the hwtstamp registers and enable/disable
3472 * @adapter: board private structure
3474 * Outgoing time stamping can be enabled and disabled. Play nice and
3475 * disable it when requested, although it shouldn't cause any overhead
3476 * when no packet needs it. At most one packet in the queue may be
3477 * marked for time stamping, otherwise it would be impossible to tell
3478 * for sure to which packet the hardware time stamp belongs.
3480 * Incoming time stamping has to be configured via the hardware filters.
3481 * Not all combinations are supported, in particular event type has to be
3482 * specified. Matching the kind of event packet is not supported, with the
3483 * exception of "all V2 events regardless of level 2 or 4".
3485 static int e1000e_config_hwtstamp(struct e1000_adapter
*adapter
)
3487 struct e1000_hw
*hw
= &adapter
->hw
;
3488 struct hwtstamp_config
*config
= &adapter
->hwtstamp_config
;
3489 u32 tsync_tx_ctl
= E1000_TSYNCTXCTL_ENABLED
;
3490 u32 tsync_rx_ctl
= E1000_TSYNCRXCTL_ENABLED
;
3498 if (!(adapter
->flags
& FLAG_HAS_HW_TIMESTAMP
))
3501 /* flags reserved for future extensions - must be zero */
3505 switch (config
->tx_type
) {
3506 case HWTSTAMP_TX_OFF
:
3509 case HWTSTAMP_TX_ON
:
3515 switch (config
->rx_filter
) {
3516 case HWTSTAMP_FILTER_NONE
:
3519 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC
:
3520 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L4_V1
;
3521 rxmtrl
= E1000_RXMTRL_PTP_V1_SYNC_MESSAGE
;
3524 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ
:
3525 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L4_V1
;
3526 rxmtrl
= E1000_RXMTRL_PTP_V1_DELAY_REQ_MESSAGE
;
3529 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC
:
3530 /* Also time stamps V2 L2 Path Delay Request/Response */
3531 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L2_V2
;
3532 rxmtrl
= E1000_RXMTRL_PTP_V2_SYNC_MESSAGE
;
3535 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ
:
3536 /* Also time stamps V2 L2 Path Delay Request/Response. */
3537 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L2_V2
;
3538 rxmtrl
= E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE
;
3541 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC
:
3542 /* Hardware cannot filter just V2 L4 Sync messages;
3543 * fall-through to V2 (both L2 and L4) Sync.
3545 case HWTSTAMP_FILTER_PTP_V2_SYNC
:
3546 /* Also time stamps V2 Path Delay Request/Response. */
3547 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L2_L4_V2
;
3548 rxmtrl
= E1000_RXMTRL_PTP_V2_SYNC_MESSAGE
;
3552 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ
:
3553 /* Hardware cannot filter just V2 L4 Delay Request messages;
3554 * fall-through to V2 (both L2 and L4) Delay Request.
3556 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ
:
3557 /* Also time stamps V2 Path Delay Request/Response. */
3558 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L2_L4_V2
;
3559 rxmtrl
= E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE
;
3563 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT
:
3564 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT
:
3565 /* Hardware cannot filter just V2 L4 or L2 Event messages;
3566 * fall-through to all V2 (both L2 and L4) Events.
3568 case HWTSTAMP_FILTER_PTP_V2_EVENT
:
3569 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_EVENT_V2
;
3570 config
->rx_filter
= HWTSTAMP_FILTER_PTP_V2_EVENT
;
3574 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT
:
3575 /* For V1, the hardware can only filter Sync messages or
3576 * Delay Request messages but not both so fall-through to
3577 * time stamp all packets.
3579 case HWTSTAMP_FILTER_ALL
:
3582 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_ALL
;
3583 config
->rx_filter
= HWTSTAMP_FILTER_ALL
;
3589 /* enable/disable Tx h/w time stamping */
3590 regval
= er32(TSYNCTXCTL
);
3591 regval
&= ~E1000_TSYNCTXCTL_ENABLED
;
3592 regval
|= tsync_tx_ctl
;
3593 ew32(TSYNCTXCTL
, regval
);
3594 if ((er32(TSYNCTXCTL
) & E1000_TSYNCTXCTL_ENABLED
) !=
3595 (regval
& E1000_TSYNCTXCTL_ENABLED
)) {
3596 e_err("Timesync Tx Control register not set as expected\n");
3600 /* enable/disable Rx h/w time stamping */
3601 regval
= er32(TSYNCRXCTL
);
3602 regval
&= ~(E1000_TSYNCRXCTL_ENABLED
| E1000_TSYNCRXCTL_TYPE_MASK
);
3603 regval
|= tsync_rx_ctl
;
3604 ew32(TSYNCRXCTL
, regval
);
3605 if ((er32(TSYNCRXCTL
) & (E1000_TSYNCRXCTL_ENABLED
|
3606 E1000_TSYNCRXCTL_TYPE_MASK
)) !=
3607 (regval
& (E1000_TSYNCRXCTL_ENABLED
|
3608 E1000_TSYNCRXCTL_TYPE_MASK
))) {
3609 e_err("Timesync Rx Control register not set as expected\n");
3613 /* L2: define ethertype filter for time stamped packets */
3615 rxmtrl
|= ETH_P_1588
;
3617 /* define which PTP packets get time stamped */
3618 ew32(RXMTRL
, rxmtrl
);
3620 /* Filter by destination port */
3622 rxudp
= PTP_EV_PORT
;
3623 cpu_to_be16s(&rxudp
);
3629 /* Clear TSYNCRXCTL_VALID & TSYNCTXCTL_VALID bit */
3633 /* Get and set the System Time Register SYSTIM base frequency */
3634 ret_val
= e1000e_get_base_timinca(adapter
, ®val
);
3637 ew32(TIMINCA
, regval
);
3639 /* reset the ns time counter */
3640 timecounter_init(&adapter
->tc
, &adapter
->cc
,
3641 ktime_to_ns(ktime_get_real()));
3647 * e1000_configure - configure the hardware for Rx and Tx
3648 * @adapter: private board structure
3650 static void e1000_configure(struct e1000_adapter
*adapter
)
3652 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
3654 e1000e_set_rx_mode(adapter
->netdev
);
3656 e1000_restore_vlan(adapter
);
3657 e1000_init_manageability_pt(adapter
);
3659 e1000_configure_tx(adapter
);
3661 if (adapter
->netdev
->features
& NETIF_F_RXHASH
)
3662 e1000e_setup_rss_hash(adapter
);
3663 e1000_setup_rctl(adapter
);
3664 e1000_configure_rx(adapter
);
3665 adapter
->alloc_rx_buf(rx_ring
, e1000_desc_unused(rx_ring
), GFP_KERNEL
);
3669 * e1000e_power_up_phy - restore link in case the phy was powered down
3670 * @adapter: address of board private structure
3672 * The phy may be powered down to save power and turn off link when the
3673 * driver is unloaded and wake on lan is not enabled (among others)
3674 * *** this routine MUST be followed by a call to e1000e_reset ***
3676 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
3678 if (adapter
->hw
.phy
.ops
.power_up
)
3679 adapter
->hw
.phy
.ops
.power_up(&adapter
->hw
);
3681 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
3685 * e1000_power_down_phy - Power down the PHY
3687 * Power down the PHY so no link is implied when interface is down.
3688 * The PHY cannot be powered down if management or WoL is active.
3690 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
3692 /* WoL is enabled */
3696 if (adapter
->hw
.phy
.ops
.power_down
)
3697 adapter
->hw
.phy
.ops
.power_down(&adapter
->hw
);
3701 * e1000e_reset - bring the hardware into a known good state
3703 * This function boots the hardware and enables some settings that
3704 * require a configuration cycle of the hardware - those cannot be
3705 * set/changed during runtime. After reset the device needs to be
3706 * properly configured for Rx, Tx etc.
3708 void e1000e_reset(struct e1000_adapter
*adapter
)
3710 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3711 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
3712 struct e1000_hw
*hw
= &adapter
->hw
;
3713 u32 tx_space
, min_tx_space
, min_rx_space
;
3714 u32 pba
= adapter
->pba
;
3717 /* reset Packet Buffer Allocation to default */
3720 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3721 /* To maintain wire speed transmits, the Tx FIFO should be
3722 * large enough to accommodate two full transmit packets,
3723 * rounded up to the next 1KB and expressed in KB. Likewise,
3724 * the Rx FIFO should be large enough to accommodate at least
3725 * one full receive packet and is similarly rounded up and
3729 /* upper 16 bits has Tx packet buffer allocation size in KB */
3730 tx_space
= pba
>> 16;
3731 /* lower 16 bits has Rx packet buffer allocation size in KB */
3733 /* the Tx fifo also stores 16 bytes of information about the Tx
3734 * but don't include ethernet FCS because hardware appends it
3736 min_tx_space
= (adapter
->max_frame_size
+
3737 sizeof(struct e1000_tx_desc
) - ETH_FCS_LEN
) * 2;
3738 min_tx_space
= ALIGN(min_tx_space
, 1024);
3739 min_tx_space
>>= 10;
3740 /* software strips receive CRC, so leave room for it */
3741 min_rx_space
= adapter
->max_frame_size
;
3742 min_rx_space
= ALIGN(min_rx_space
, 1024);
3743 min_rx_space
>>= 10;
3745 /* If current Tx allocation is less than the min Tx FIFO size,
3746 * and the min Tx FIFO size is less than the current Rx FIFO
3747 * allocation, take space away from current Rx allocation
3749 if ((tx_space
< min_tx_space
) &&
3750 ((min_tx_space
- tx_space
) < pba
)) {
3751 pba
-= min_tx_space
- tx_space
;
3753 /* if short on Rx space, Rx wins and must trump Tx
3756 if (pba
< min_rx_space
)
3763 /* flow control settings
3765 * The high water mark must be low enough to fit one full frame
3766 * (or the size used for early receive) above it in the Rx FIFO.
3767 * Set it to the lower of:
3768 * - 90% of the Rx FIFO size, and
3769 * - the full Rx FIFO size minus one full frame
3771 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
3772 fc
->pause_time
= 0xFFFF;
3774 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
3775 fc
->send_xon
= true;
3776 fc
->current_mode
= fc
->requested_mode
;
3778 switch (hw
->mac
.type
) {
3780 case e1000_ich10lan
:
3781 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3784 fc
->high_water
= 0x2800;
3785 fc
->low_water
= fc
->high_water
- 8;
3790 hwm
= min(((pba
<< 10) * 9 / 10),
3791 ((pba
<< 10) - adapter
->max_frame_size
));
3793 fc
->high_water
= hwm
& E1000_FCRTH_RTH
; /* 8-byte granularity */
3794 fc
->low_water
= fc
->high_water
- 8;
3797 /* Workaround PCH LOM adapter hangs with certain network
3798 * loads. If hangs persist, try disabling Tx flow control.
3800 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3801 fc
->high_water
= 0x3500;
3802 fc
->low_water
= 0x1500;
3804 fc
->high_water
= 0x5000;
3805 fc
->low_water
= 0x3000;
3807 fc
->refresh_time
= 0x1000;
3811 fc
->refresh_time
= 0x0400;
3813 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
) {
3814 fc
->high_water
= 0x05C20;
3815 fc
->low_water
= 0x05048;
3816 fc
->pause_time
= 0x0650;
3822 fc
->high_water
= ((pba
<< 10) * 9 / 10) & E1000_FCRTH_RTH
;
3823 fc
->low_water
= ((pba
<< 10) * 8 / 10) & E1000_FCRTL_RTL
;
3827 /* Alignment of Tx data is on an arbitrary byte boundary with the
3828 * maximum size per Tx descriptor limited only to the transmit
3829 * allocation of the packet buffer minus 96 bytes with an upper
3830 * limit of 24KB due to receive synchronization limitations.
3832 adapter
->tx_fifo_limit
= min_t(u32
, ((er32(PBA
) >> 16) << 10) - 96,
3835 /* Disable Adaptive Interrupt Moderation if 2 full packets cannot
3836 * fit in receive buffer.
3838 if (adapter
->itr_setting
& 0x3) {
3839 if ((adapter
->max_frame_size
* 2) > (pba
<< 10)) {
3840 if (!(adapter
->flags2
& FLAG2_DISABLE_AIM
)) {
3841 dev_info(&adapter
->pdev
->dev
,
3842 "Interrupt Throttle Rate off\n");
3843 adapter
->flags2
|= FLAG2_DISABLE_AIM
;
3844 e1000e_write_itr(adapter
, 0);
3846 } else if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
3847 dev_info(&adapter
->pdev
->dev
,
3848 "Interrupt Throttle Rate on\n");
3849 adapter
->flags2
&= ~FLAG2_DISABLE_AIM
;
3850 adapter
->itr
= 20000;
3851 e1000e_write_itr(adapter
, adapter
->itr
);
3855 /* Allow time for pending master requests to run */
3856 mac
->ops
.reset_hw(hw
);
3858 /* For parts with AMT enabled, let the firmware know
3859 * that the network interface is in control
3861 if (adapter
->flags
& FLAG_HAS_AMT
)
3862 e1000e_get_hw_control(adapter
);
3866 if (mac
->ops
.init_hw(hw
))
3867 e_err("Hardware Error\n");
3869 e1000_update_mng_vlan(adapter
);
3871 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3872 ew32(VET
, ETH_P_8021Q
);
3874 e1000e_reset_adaptive(hw
);
3876 /* initialize systim and reset the ns time counter */
3877 e1000e_config_hwtstamp(adapter
);
3879 /* Set EEE advertisement as appropriate */
3880 if (adapter
->flags2
& FLAG2_HAS_EEE
) {
3884 switch (hw
->phy
.type
) {
3885 case e1000_phy_82579
:
3886 adv_addr
= I82579_EEE_ADVERTISEMENT
;
3888 case e1000_phy_i217
:
3889 adv_addr
= I217_EEE_ADVERTISEMENT
;
3892 dev_err(&adapter
->pdev
->dev
,
3893 "Invalid PHY type setting EEE advertisement\n");
3897 ret_val
= hw
->phy
.ops
.acquire(hw
);
3899 dev_err(&adapter
->pdev
->dev
,
3900 "EEE advertisement - unable to acquire PHY\n");
3904 e1000_write_emi_reg_locked(hw
, adv_addr
,
3905 hw
->dev_spec
.ich8lan
.eee_disable
?
3906 0 : adapter
->eee_advert
);
3908 hw
->phy
.ops
.release(hw
);
3911 if (!netif_running(adapter
->netdev
) &&
3912 !test_bit(__E1000_TESTING
, &adapter
->state
)) {
3913 e1000_power_down_phy(adapter
);
3917 e1000_get_phy_info(hw
);
3919 if ((adapter
->flags
& FLAG_HAS_SMART_POWER_DOWN
) &&
3920 !(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
3922 /* speed up time to link by disabling smart power down, ignore
3923 * the return value of this function because there is nothing
3924 * different we would do if it failed
3926 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
3927 phy_data
&= ~IGP02E1000_PM_SPD
;
3928 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
3932 int e1000e_up(struct e1000_adapter
*adapter
)
3934 struct e1000_hw
*hw
= &adapter
->hw
;
3936 /* hardware has been reset, we need to reload some things */
3937 e1000_configure(adapter
);
3939 clear_bit(__E1000_DOWN
, &adapter
->state
);
3941 if (adapter
->msix_entries
)
3942 e1000_configure_msix(adapter
);
3943 e1000_irq_enable(adapter
);
3945 netif_start_queue(adapter
->netdev
);
3947 /* fire a link change interrupt to start the watchdog */
3948 if (adapter
->msix_entries
)
3949 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
3951 ew32(ICS
, E1000_ICS_LSC
);
3956 static void e1000e_flush_descriptors(struct e1000_adapter
*adapter
)
3958 struct e1000_hw
*hw
= &adapter
->hw
;
3960 if (!(adapter
->flags2
& FLAG2_DMA_BURST
))
3963 /* flush pending descriptor writebacks to memory */
3964 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
3965 ew32(RDTR
, adapter
->rx_int_delay
| E1000_RDTR_FPD
);
3967 /* execute the writes immediately */
3970 /* due to rare timing issues, write to TIDV/RDTR again to ensure the
3971 * write is successful
3973 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
3974 ew32(RDTR
, adapter
->rx_int_delay
| E1000_RDTR_FPD
);
3976 /* execute the writes immediately */
3980 static void e1000e_update_stats(struct e1000_adapter
*adapter
);
3982 void e1000e_down(struct e1000_adapter
*adapter
)
3984 struct net_device
*netdev
= adapter
->netdev
;
3985 struct e1000_hw
*hw
= &adapter
->hw
;
3988 /* signal that we're down so the interrupt handler does not
3989 * reschedule our watchdog timer
3991 set_bit(__E1000_DOWN
, &adapter
->state
);
3993 /* disable receives in the hardware */
3995 if (!(adapter
->flags2
& FLAG2_NO_DISABLE_RX
))
3996 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3997 /* flush and sleep below */
3999 netif_stop_queue(netdev
);
4001 /* disable transmits in the hardware */
4003 tctl
&= ~E1000_TCTL_EN
;
4006 /* flush both disables and wait for them to finish */
4008 usleep_range(10000, 20000);
4010 e1000_irq_disable(adapter
);
4012 napi_synchronize(&adapter
->napi
);
4014 del_timer_sync(&adapter
->watchdog_timer
);
4015 del_timer_sync(&adapter
->phy_info_timer
);
4017 netif_carrier_off(netdev
);
4019 spin_lock(&adapter
->stats64_lock
);
4020 e1000e_update_stats(adapter
);
4021 spin_unlock(&adapter
->stats64_lock
);
4023 e1000e_flush_descriptors(adapter
);
4024 e1000_clean_tx_ring(adapter
->tx_ring
);
4025 e1000_clean_rx_ring(adapter
->rx_ring
);
4027 adapter
->link_speed
= 0;
4028 adapter
->link_duplex
= 0;
4030 /* Disable Si errata workaround on PCHx for jumbo frame flow */
4031 if ((hw
->mac
.type
>= e1000_pch2lan
) &&
4032 (adapter
->netdev
->mtu
> ETH_DATA_LEN
) &&
4033 e1000_lv_jumbo_workaround_ich8lan(hw
, false))
4034 e_dbg("failed to disable jumbo frame workaround mode\n");
4036 if (!pci_channel_offline(adapter
->pdev
))
4037 e1000e_reset(adapter
);
4039 /* TODO: for power management, we could drop the link and
4040 * pci_disable_device here.
4044 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
4047 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
4048 usleep_range(1000, 2000);
4049 e1000e_down(adapter
);
4051 clear_bit(__E1000_RESETTING
, &adapter
->state
);
4055 * e1000e_cyclecounter_read - read raw cycle counter (used by time counter)
4056 * @cc: cyclecounter structure
4058 static cycle_t
e1000e_cyclecounter_read(const struct cyclecounter
*cc
)
4060 struct e1000_adapter
*adapter
= container_of(cc
, struct e1000_adapter
,
4062 struct e1000_hw
*hw
= &adapter
->hw
;
4065 /* latch SYSTIMH on read of SYSTIML */
4066 systim
= (cycle_t
)er32(SYSTIML
);
4067 systim
|= (cycle_t
)er32(SYSTIMH
) << 32;
4073 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
4074 * @adapter: board private structure to initialize
4076 * e1000_sw_init initializes the Adapter private data structure.
4077 * Fields are initialized based on PCI device information and
4078 * OS network device settings (MTU size).
4080 static int e1000_sw_init(struct e1000_adapter
*adapter
)
4082 struct net_device
*netdev
= adapter
->netdev
;
4084 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
4085 adapter
->rx_ps_bsize0
= 128;
4086 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4087 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
4088 adapter
->tx_ring_count
= E1000_DEFAULT_TXD
;
4089 adapter
->rx_ring_count
= E1000_DEFAULT_RXD
;
4091 spin_lock_init(&adapter
->stats64_lock
);
4093 e1000e_set_interrupt_capability(adapter
);
4095 if (e1000_alloc_queues(adapter
))
4098 /* Setup hardware time stamping cyclecounter */
4099 if (adapter
->flags
& FLAG_HAS_HW_TIMESTAMP
) {
4100 adapter
->cc
.read
= e1000e_cyclecounter_read
;
4101 adapter
->cc
.mask
= CLOCKSOURCE_MASK(64);
4102 adapter
->cc
.mult
= 1;
4103 /* cc.shift set in e1000e_get_base_tininca() */
4105 spin_lock_init(&adapter
->systim_lock
);
4106 INIT_WORK(&adapter
->tx_hwtstamp_work
, e1000e_tx_hwtstamp_work
);
4109 /* Explicitly disable IRQ since the NIC can be in any state. */
4110 e1000_irq_disable(adapter
);
4112 set_bit(__E1000_DOWN
, &adapter
->state
);
4117 * e1000_intr_msi_test - Interrupt Handler
4118 * @irq: interrupt number
4119 * @data: pointer to a network interface device structure
4121 static irqreturn_t
e1000_intr_msi_test(int __always_unused irq
, void *data
)
4123 struct net_device
*netdev
= data
;
4124 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4125 struct e1000_hw
*hw
= &adapter
->hw
;
4126 u32 icr
= er32(ICR
);
4128 e_dbg("icr is %08X\n", icr
);
4129 if (icr
& E1000_ICR_RXSEQ
) {
4130 adapter
->flags
&= ~FLAG_MSI_TEST_FAILED
;
4131 /* Force memory writes to complete before acknowledging the
4132 * interrupt is handled.
4141 * e1000_test_msi_interrupt - Returns 0 for successful test
4142 * @adapter: board private struct
4144 * code flow taken from tg3.c
4146 static int e1000_test_msi_interrupt(struct e1000_adapter
*adapter
)
4148 struct net_device
*netdev
= adapter
->netdev
;
4149 struct e1000_hw
*hw
= &adapter
->hw
;
4152 /* poll_enable hasn't been called yet, so don't need disable */
4153 /* clear any pending events */
4156 /* free the real vector and request a test handler */
4157 e1000_free_irq(adapter
);
4158 e1000e_reset_interrupt_capability(adapter
);
4160 /* Assume that the test fails, if it succeeds then the test
4161 * MSI irq handler will unset this flag
4163 adapter
->flags
|= FLAG_MSI_TEST_FAILED
;
4165 err
= pci_enable_msi(adapter
->pdev
);
4167 goto msi_test_failed
;
4169 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi_test
, 0,
4170 netdev
->name
, netdev
);
4172 pci_disable_msi(adapter
->pdev
);
4173 goto msi_test_failed
;
4176 /* Force memory writes to complete before enabling and firing an
4181 e1000_irq_enable(adapter
);
4183 /* fire an unusual interrupt on the test handler */
4184 ew32(ICS
, E1000_ICS_RXSEQ
);
4188 e1000_irq_disable(adapter
);
4190 rmb(); /* read flags after interrupt has been fired */
4192 if (adapter
->flags
& FLAG_MSI_TEST_FAILED
) {
4193 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
4194 e_info("MSI interrupt test failed, using legacy interrupt.\n");
4196 e_dbg("MSI interrupt test succeeded!\n");
4199 free_irq(adapter
->pdev
->irq
, netdev
);
4200 pci_disable_msi(adapter
->pdev
);
4203 e1000e_set_interrupt_capability(adapter
);
4204 return e1000_request_irq(adapter
);
4208 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
4209 * @adapter: board private struct
4211 * code flow taken from tg3.c, called with e1000 interrupts disabled.
4213 static int e1000_test_msi(struct e1000_adapter
*adapter
)
4218 if (!(adapter
->flags
& FLAG_MSI_ENABLED
))
4221 /* disable SERR in case the MSI write causes a master abort */
4222 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
4223 if (pci_cmd
& PCI_COMMAND_SERR
)
4224 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
,
4225 pci_cmd
& ~PCI_COMMAND_SERR
);
4227 err
= e1000_test_msi_interrupt(adapter
);
4229 /* re-enable SERR */
4230 if (pci_cmd
& PCI_COMMAND_SERR
) {
4231 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
4232 pci_cmd
|= PCI_COMMAND_SERR
;
4233 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
, pci_cmd
);
4240 * e1000_open - Called when a network interface is made active
4241 * @netdev: network interface device structure
4243 * Returns 0 on success, negative value on failure
4245 * The open entry point is called when a network interface is made
4246 * active by the system (IFF_UP). At this point all resources needed
4247 * for transmit and receive operations are allocated, the interrupt
4248 * handler is registered with the OS, the watchdog timer is started,
4249 * and the stack is notified that the interface is ready.
4251 static int e1000_open(struct net_device
*netdev
)
4253 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4254 struct e1000_hw
*hw
= &adapter
->hw
;
4255 struct pci_dev
*pdev
= adapter
->pdev
;
4258 /* disallow open during test */
4259 if (test_bit(__E1000_TESTING
, &adapter
->state
))
4262 pm_runtime_get_sync(&pdev
->dev
);
4264 netif_carrier_off(netdev
);
4266 /* allocate transmit descriptors */
4267 err
= e1000e_setup_tx_resources(adapter
->tx_ring
);
4271 /* allocate receive descriptors */
4272 err
= e1000e_setup_rx_resources(adapter
->rx_ring
);
4276 /* If AMT is enabled, let the firmware know that the network
4277 * interface is now open and reset the part to a known state.
4279 if (adapter
->flags
& FLAG_HAS_AMT
) {
4280 e1000e_get_hw_control(adapter
);
4281 e1000e_reset(adapter
);
4284 e1000e_power_up_phy(adapter
);
4286 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4287 if ((adapter
->hw
.mng_cookie
.status
& E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
4288 e1000_update_mng_vlan(adapter
);
4290 /* DMA latency requirement to workaround jumbo issue */
4291 pm_qos_add_request(&adapter
->netdev
->pm_qos_req
, PM_QOS_CPU_DMA_LATENCY
,
4292 PM_QOS_DEFAULT_VALUE
);
4294 /* before we allocate an interrupt, we must be ready to handle it.
4295 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
4296 * as soon as we call pci_request_irq, so we have to setup our
4297 * clean_rx handler before we do so.
4299 e1000_configure(adapter
);
4301 err
= e1000_request_irq(adapter
);
4305 /* Work around PCIe errata with MSI interrupts causing some chipsets to
4306 * ignore e1000e MSI messages, which means we need to test our MSI
4309 if (adapter
->int_mode
!= E1000E_INT_MODE_LEGACY
) {
4310 err
= e1000_test_msi(adapter
);
4312 e_err("Interrupt allocation failed\n");
4317 /* From here on the code is the same as e1000e_up() */
4318 clear_bit(__E1000_DOWN
, &adapter
->state
);
4320 napi_enable(&adapter
->napi
);
4322 e1000_irq_enable(adapter
);
4324 adapter
->tx_hang_recheck
= false;
4325 netif_start_queue(netdev
);
4327 adapter
->idle_check
= true;
4328 hw
->mac
.get_link_status
= true;
4329 pm_runtime_put(&pdev
->dev
);
4331 /* fire a link status change interrupt to start the watchdog */
4332 if (adapter
->msix_entries
)
4333 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
4335 ew32(ICS
, E1000_ICS_LSC
);
4340 e1000e_release_hw_control(adapter
);
4341 e1000_power_down_phy(adapter
);
4342 e1000e_free_rx_resources(adapter
->rx_ring
);
4344 e1000e_free_tx_resources(adapter
->tx_ring
);
4346 e1000e_reset(adapter
);
4347 pm_runtime_put_sync(&pdev
->dev
);
4353 * e1000_close - Disables a network interface
4354 * @netdev: network interface device structure
4356 * Returns 0, this is not allowed to fail
4358 * The close entry point is called when an interface is de-activated
4359 * by the OS. The hardware is still under the drivers control, but
4360 * needs to be disabled. A global MAC reset is issued to stop the
4361 * hardware, and all transmit and receive resources are freed.
4363 static int e1000_close(struct net_device
*netdev
)
4365 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4366 struct pci_dev
*pdev
= adapter
->pdev
;
4367 int count
= E1000_CHECK_RESET_COUNT
;
4369 while (test_bit(__E1000_RESETTING
, &adapter
->state
) && count
--)
4370 usleep_range(10000, 20000);
4372 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
4374 pm_runtime_get_sync(&pdev
->dev
);
4376 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
4377 e1000e_down(adapter
);
4378 e1000_free_irq(adapter
);
4381 napi_disable(&adapter
->napi
);
4383 e1000_power_down_phy(adapter
);
4385 e1000e_free_tx_resources(adapter
->tx_ring
);
4386 e1000e_free_rx_resources(adapter
->rx_ring
);
4388 /* kill manageability vlan ID if supported, but not if a vlan with
4389 * the same ID is registered on the host OS (let 8021q kill it)
4391 if (adapter
->hw
.mng_cookie
.status
& E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)
4392 e1000_vlan_rx_kill_vid(netdev
, htons(ETH_P_8021Q
),
4393 adapter
->mng_vlan_id
);
4395 /* If AMT is enabled, let the firmware know that the network
4396 * interface is now closed
4398 if ((adapter
->flags
& FLAG_HAS_AMT
) &&
4399 !test_bit(__E1000_TESTING
, &adapter
->state
))
4400 e1000e_release_hw_control(adapter
);
4402 pm_qos_remove_request(&adapter
->netdev
->pm_qos_req
);
4404 pm_runtime_put_sync(&pdev
->dev
);
4410 * e1000_set_mac - Change the Ethernet Address of the NIC
4411 * @netdev: network interface device structure
4412 * @p: pointer to an address structure
4414 * Returns 0 on success, negative on failure
4416 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
4418 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4419 struct e1000_hw
*hw
= &adapter
->hw
;
4420 struct sockaddr
*addr
= p
;
4422 if (!is_valid_ether_addr(addr
->sa_data
))
4423 return -EADDRNOTAVAIL
;
4425 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
4426 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
4428 hw
->mac
.ops
.rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
4430 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
4431 /* activate the work around */
4432 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
4434 /* Hold a copy of the LAA in RAR[14] This is done so that
4435 * between the time RAR[0] gets clobbered and the time it
4436 * gets fixed (in e1000_watchdog), the actual LAA is in one
4437 * of the RARs and no incoming packets directed to this port
4438 * are dropped. Eventually the LAA will be in RAR[0] and
4441 hw
->mac
.ops
.rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
,
4442 adapter
->hw
.mac
.rar_entry_count
- 1);
4449 * e1000e_update_phy_task - work thread to update phy
4450 * @work: pointer to our work struct
4452 * this worker thread exists because we must acquire a
4453 * semaphore to read the phy, which we could msleep while
4454 * waiting for it, and we can't msleep in a timer.
4456 static void e1000e_update_phy_task(struct work_struct
*work
)
4458 struct e1000_adapter
*adapter
= container_of(work
,
4459 struct e1000_adapter
,
4462 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4465 e1000_get_phy_info(&adapter
->hw
);
4469 * e1000_update_phy_info - timre call-back to update PHY info
4470 * @data: pointer to adapter cast into an unsigned long
4472 * Need to wait a few seconds after link up to get diagnostic information from
4475 static void e1000_update_phy_info(unsigned long data
)
4477 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
4479 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4482 schedule_work(&adapter
->update_phy_task
);
4486 * e1000e_update_phy_stats - Update the PHY statistics counters
4487 * @adapter: board private structure
4489 * Read/clear the upper 16-bit PHY registers and read/accumulate lower
4491 static void e1000e_update_phy_stats(struct e1000_adapter
*adapter
)
4493 struct e1000_hw
*hw
= &adapter
->hw
;
4497 ret_val
= hw
->phy
.ops
.acquire(hw
);
4501 /* A page set is expensive so check if already on desired page.
4502 * If not, set to the page with the PHY status registers.
4505 ret_val
= e1000e_read_phy_reg_mdic(hw
, IGP01E1000_PHY_PAGE_SELECT
,
4509 if (phy_data
!= (HV_STATS_PAGE
<< IGP_PAGE_SHIFT
)) {
4510 ret_val
= hw
->phy
.ops
.set_page(hw
,
4511 HV_STATS_PAGE
<< IGP_PAGE_SHIFT
);
4516 /* Single Collision Count */
4517 hw
->phy
.ops
.read_reg_page(hw
, HV_SCC_UPPER
, &phy_data
);
4518 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_SCC_LOWER
, &phy_data
);
4520 adapter
->stats
.scc
+= phy_data
;
4522 /* Excessive Collision Count */
4523 hw
->phy
.ops
.read_reg_page(hw
, HV_ECOL_UPPER
, &phy_data
);
4524 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_ECOL_LOWER
, &phy_data
);
4526 adapter
->stats
.ecol
+= phy_data
;
4528 /* Multiple Collision Count */
4529 hw
->phy
.ops
.read_reg_page(hw
, HV_MCC_UPPER
, &phy_data
);
4530 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_MCC_LOWER
, &phy_data
);
4532 adapter
->stats
.mcc
+= phy_data
;
4534 /* Late Collision Count */
4535 hw
->phy
.ops
.read_reg_page(hw
, HV_LATECOL_UPPER
, &phy_data
);
4536 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_LATECOL_LOWER
, &phy_data
);
4538 adapter
->stats
.latecol
+= phy_data
;
4540 /* Collision Count - also used for adaptive IFS */
4541 hw
->phy
.ops
.read_reg_page(hw
, HV_COLC_UPPER
, &phy_data
);
4542 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_COLC_LOWER
, &phy_data
);
4544 hw
->mac
.collision_delta
= phy_data
;
4547 hw
->phy
.ops
.read_reg_page(hw
, HV_DC_UPPER
, &phy_data
);
4548 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_DC_LOWER
, &phy_data
);
4550 adapter
->stats
.dc
+= phy_data
;
4552 /* Transmit with no CRS */
4553 hw
->phy
.ops
.read_reg_page(hw
, HV_TNCRS_UPPER
, &phy_data
);
4554 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_TNCRS_LOWER
, &phy_data
);
4556 adapter
->stats
.tncrs
+= phy_data
;
4559 hw
->phy
.ops
.release(hw
);
4563 * e1000e_update_stats - Update the board statistics counters
4564 * @adapter: board private structure
4566 static void e1000e_update_stats(struct e1000_adapter
*adapter
)
4568 struct net_device
*netdev
= adapter
->netdev
;
4569 struct e1000_hw
*hw
= &adapter
->hw
;
4570 struct pci_dev
*pdev
= adapter
->pdev
;
4572 /* Prevent stats update while adapter is being reset, or if the pci
4573 * connection is down.
4575 if (adapter
->link_speed
== 0)
4577 if (pci_channel_offline(pdev
))
4580 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
4581 adapter
->stats
.gprc
+= er32(GPRC
);
4582 adapter
->stats
.gorc
+= er32(GORCL
);
4583 er32(GORCH
); /* Clear gorc */
4584 adapter
->stats
.bprc
+= er32(BPRC
);
4585 adapter
->stats
.mprc
+= er32(MPRC
);
4586 adapter
->stats
.roc
+= er32(ROC
);
4588 adapter
->stats
.mpc
+= er32(MPC
);
4590 /* Half-duplex statistics */
4591 if (adapter
->link_duplex
== HALF_DUPLEX
) {
4592 if (adapter
->flags2
& FLAG2_HAS_PHY_STATS
) {
4593 e1000e_update_phy_stats(adapter
);
4595 adapter
->stats
.scc
+= er32(SCC
);
4596 adapter
->stats
.ecol
+= er32(ECOL
);
4597 adapter
->stats
.mcc
+= er32(MCC
);
4598 adapter
->stats
.latecol
+= er32(LATECOL
);
4599 adapter
->stats
.dc
+= er32(DC
);
4601 hw
->mac
.collision_delta
= er32(COLC
);
4603 if ((hw
->mac
.type
!= e1000_82574
) &&
4604 (hw
->mac
.type
!= e1000_82583
))
4605 adapter
->stats
.tncrs
+= er32(TNCRS
);
4607 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
4610 adapter
->stats
.xonrxc
+= er32(XONRXC
);
4611 adapter
->stats
.xontxc
+= er32(XONTXC
);
4612 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
4613 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
4614 adapter
->stats
.gptc
+= er32(GPTC
);
4615 adapter
->stats
.gotc
+= er32(GOTCL
);
4616 er32(GOTCH
); /* Clear gotc */
4617 adapter
->stats
.rnbc
+= er32(RNBC
);
4618 adapter
->stats
.ruc
+= er32(RUC
);
4620 adapter
->stats
.mptc
+= er32(MPTC
);
4621 adapter
->stats
.bptc
+= er32(BPTC
);
4623 /* used for adaptive IFS */
4625 hw
->mac
.tx_packet_delta
= er32(TPT
);
4626 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
4628 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
4629 adapter
->stats
.rxerrc
+= er32(RXERRC
);
4630 adapter
->stats
.cexterr
+= er32(CEXTERR
);
4631 adapter
->stats
.tsctc
+= er32(TSCTC
);
4632 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
4634 /* Fill out the OS statistics structure */
4635 netdev
->stats
.multicast
= adapter
->stats
.mprc
;
4636 netdev
->stats
.collisions
= adapter
->stats
.colc
;
4640 /* RLEC on some newer hardware can be incorrect so build
4641 * our own version based on RUC and ROC
4643 netdev
->stats
.rx_errors
= adapter
->stats
.rxerrc
+
4644 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
4645 adapter
->stats
.ruc
+ adapter
->stats
.roc
+ adapter
->stats
.cexterr
;
4646 netdev
->stats
.rx_length_errors
= adapter
->stats
.ruc
+
4648 netdev
->stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
4649 netdev
->stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
4650 netdev
->stats
.rx_missed_errors
= adapter
->stats
.mpc
;
4653 netdev
->stats
.tx_errors
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
4654 netdev
->stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
4655 netdev
->stats
.tx_window_errors
= adapter
->stats
.latecol
;
4656 netdev
->stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
4658 /* Tx Dropped needs to be maintained elsewhere */
4660 /* Management Stats */
4661 adapter
->stats
.mgptc
+= er32(MGTPTC
);
4662 adapter
->stats
.mgprc
+= er32(MGTPRC
);
4663 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
4665 /* Correctable ECC Errors */
4666 if (hw
->mac
.type
== e1000_pch_lpt
) {
4667 u32 pbeccsts
= er32(PBECCSTS
);
4668 adapter
->corr_errors
+=
4669 pbeccsts
& E1000_PBECCSTS_CORR_ERR_CNT_MASK
;
4670 adapter
->uncorr_errors
+=
4671 (pbeccsts
& E1000_PBECCSTS_UNCORR_ERR_CNT_MASK
) >>
4672 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT
;
4677 * e1000_phy_read_status - Update the PHY register status snapshot
4678 * @adapter: board private structure
4680 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
4682 struct e1000_hw
*hw
= &adapter
->hw
;
4683 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
4685 if (!pm_runtime_suspended((&adapter
->pdev
->dev
)->parent
) &&
4686 (er32(STATUS
) & E1000_STATUS_LU
) &&
4687 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
4690 ret_val
= e1e_rphy(hw
, MII_BMCR
, &phy
->bmcr
);
4691 ret_val
|= e1e_rphy(hw
, MII_BMSR
, &phy
->bmsr
);
4692 ret_val
|= e1e_rphy(hw
, MII_ADVERTISE
, &phy
->advertise
);
4693 ret_val
|= e1e_rphy(hw
, MII_LPA
, &phy
->lpa
);
4694 ret_val
|= e1e_rphy(hw
, MII_EXPANSION
, &phy
->expansion
);
4695 ret_val
|= e1e_rphy(hw
, MII_CTRL1000
, &phy
->ctrl1000
);
4696 ret_val
|= e1e_rphy(hw
, MII_STAT1000
, &phy
->stat1000
);
4697 ret_val
|= e1e_rphy(hw
, MII_ESTATUS
, &phy
->estatus
);
4699 e_warn("Error reading PHY register\n");
4701 /* Do not read PHY registers if link is not up
4702 * Set values to typical power-on defaults
4704 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
4705 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
4706 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
4708 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
4709 ADVERTISE_ALL
| ADVERTISE_CSMA
);
4711 phy
->expansion
= EXPANSION_ENABLENPAGE
;
4712 phy
->ctrl1000
= ADVERTISE_1000FULL
;
4714 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
4718 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
4720 struct e1000_hw
*hw
= &adapter
->hw
;
4721 u32 ctrl
= er32(CTRL
);
4723 /* Link status message must follow this format for user tools */
4724 pr_info("%s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n",
4725 adapter
->netdev
->name
, adapter
->link_speed
,
4726 adapter
->link_duplex
== FULL_DUPLEX
? "Full" : "Half",
4727 (ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
) ? "Rx/Tx" :
4728 (ctrl
& E1000_CTRL_RFCE
) ? "Rx" :
4729 (ctrl
& E1000_CTRL_TFCE
) ? "Tx" : "None");
4732 static bool e1000e_has_link(struct e1000_adapter
*adapter
)
4734 struct e1000_hw
*hw
= &adapter
->hw
;
4735 bool link_active
= false;
4738 /* get_link_status is set on LSC (link status) interrupt or
4739 * Rx sequence error interrupt. get_link_status will stay
4740 * false until the check_for_link establishes link
4741 * for copper adapters ONLY
4743 switch (hw
->phy
.media_type
) {
4744 case e1000_media_type_copper
:
4745 if (hw
->mac
.get_link_status
) {
4746 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4747 link_active
= !hw
->mac
.get_link_status
;
4752 case e1000_media_type_fiber
:
4753 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4754 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
4756 case e1000_media_type_internal_serdes
:
4757 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4758 link_active
= adapter
->hw
.mac
.serdes_has_link
;
4761 case e1000_media_type_unknown
:
4765 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
4766 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
4767 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
4768 e_info("Gigabit has been disabled, downgrading speed\n");
4774 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
4776 /* make sure the receive unit is started */
4777 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
4778 (adapter
->flags
& FLAG_RESTART_NOW
)) {
4779 struct e1000_hw
*hw
= &adapter
->hw
;
4780 u32 rctl
= er32(RCTL
);
4781 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
4782 adapter
->flags
&= ~FLAG_RESTART_NOW
;
4786 static void e1000e_check_82574_phy_workaround(struct e1000_adapter
*adapter
)
4788 struct e1000_hw
*hw
= &adapter
->hw
;
4790 /* With 82574 controllers, PHY needs to be checked periodically
4791 * for hung state and reset, if two calls return true
4793 if (e1000_check_phy_82574(hw
))
4794 adapter
->phy_hang_count
++;
4796 adapter
->phy_hang_count
= 0;
4798 if (adapter
->phy_hang_count
> 1) {
4799 adapter
->phy_hang_count
= 0;
4800 schedule_work(&adapter
->reset_task
);
4805 * e1000_watchdog - Timer Call-back
4806 * @data: pointer to adapter cast into an unsigned long
4808 static void e1000_watchdog(unsigned long data
)
4810 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
4812 /* Do the rest outside of interrupt context */
4813 schedule_work(&adapter
->watchdog_task
);
4815 /* TODO: make this use queue_delayed_work() */
4818 static void e1000_watchdog_task(struct work_struct
*work
)
4820 struct e1000_adapter
*adapter
= container_of(work
,
4821 struct e1000_adapter
,
4823 struct net_device
*netdev
= adapter
->netdev
;
4824 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
4825 struct e1000_phy_info
*phy
= &adapter
->hw
.phy
;
4826 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4827 struct e1000_hw
*hw
= &adapter
->hw
;
4830 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4833 link
= e1000e_has_link(adapter
);
4834 if ((netif_carrier_ok(netdev
)) && link
) {
4835 /* Cancel scheduled suspend requests. */
4836 pm_runtime_resume(netdev
->dev
.parent
);
4838 e1000e_enable_receives(adapter
);
4842 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
4843 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
4844 e1000_update_mng_vlan(adapter
);
4847 if (!netif_carrier_ok(netdev
)) {
4850 /* Cancel scheduled suspend requests. */
4851 pm_runtime_resume(netdev
->dev
.parent
);
4853 /* update snapshot of PHY registers on LSC */
4854 e1000_phy_read_status(adapter
);
4855 mac
->ops
.get_link_up_info(&adapter
->hw
,
4856 &adapter
->link_speed
,
4857 &adapter
->link_duplex
);
4858 e1000_print_link_info(adapter
);
4860 /* check if SmartSpeed worked */
4861 e1000e_check_downshift(hw
);
4862 if (phy
->speed_downgraded
)
4864 "Link Speed was downgraded by SmartSpeed\n");
4866 /* On supported PHYs, check for duplex mismatch only
4867 * if link has autonegotiated at 10/100 half
4869 if ((hw
->phy
.type
== e1000_phy_igp_3
||
4870 hw
->phy
.type
== e1000_phy_bm
) &&
4871 (hw
->mac
.autoneg
== true) &&
4872 (adapter
->link_speed
== SPEED_10
||
4873 adapter
->link_speed
== SPEED_100
) &&
4874 (adapter
->link_duplex
== HALF_DUPLEX
)) {
4877 e1e_rphy(hw
, MII_EXPANSION
, &autoneg_exp
);
4879 if (!(autoneg_exp
& EXPANSION_NWAY
))
4880 e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n");
4883 /* adjust timeout factor according to speed/duplex */
4884 adapter
->tx_timeout_factor
= 1;
4885 switch (adapter
->link_speed
) {
4888 adapter
->tx_timeout_factor
= 16;
4892 adapter
->tx_timeout_factor
= 10;
4896 /* workaround: re-program speed mode bit after
4899 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
4902 tarc0
= er32(TARC(0));
4903 tarc0
&= ~SPEED_MODE_BIT
;
4904 ew32(TARC(0), tarc0
);
4907 /* disable TSO for pcie and 10/100 speeds, to avoid
4908 * some hardware issues
4910 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
4911 switch (adapter
->link_speed
) {
4914 e_info("10/100 speed: disabling TSO\n");
4915 netdev
->features
&= ~NETIF_F_TSO
;
4916 netdev
->features
&= ~NETIF_F_TSO6
;
4919 netdev
->features
|= NETIF_F_TSO
;
4920 netdev
->features
|= NETIF_F_TSO6
;
4928 /* enable transmits in the hardware, need to do this
4929 * after setting TARC(0)
4932 tctl
|= E1000_TCTL_EN
;
4935 /* Perform any post-link-up configuration before
4936 * reporting link up.
4938 if (phy
->ops
.cfg_on_link_up
)
4939 phy
->ops
.cfg_on_link_up(hw
);
4941 netif_carrier_on(netdev
);
4943 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4944 mod_timer(&adapter
->phy_info_timer
,
4945 round_jiffies(jiffies
+ 2 * HZ
));
4948 if (netif_carrier_ok(netdev
)) {
4949 adapter
->link_speed
= 0;
4950 adapter
->link_duplex
= 0;
4951 /* Link status message must follow this format */
4952 pr_info("%s NIC Link is Down\n", adapter
->netdev
->name
);
4953 netif_carrier_off(netdev
);
4954 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
4955 mod_timer(&adapter
->phy_info_timer
,
4956 round_jiffies(jiffies
+ 2 * HZ
));
4958 /* The link is lost so the controller stops DMA.
4959 * If there is queued Tx work that cannot be done
4960 * or if on an 8000ES2LAN which requires a Rx packet
4961 * buffer work-around on link down event, reset the
4962 * controller to flush the Tx/Rx packet buffers.
4963 * (Do the reset outside of interrupt context).
4965 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) ||
4966 (e1000_desc_unused(tx_ring
) + 1 < tx_ring
->count
))
4967 adapter
->flags
|= FLAG_RESTART_NOW
;
4969 pm_schedule_suspend(netdev
->dev
.parent
,
4975 spin_lock(&adapter
->stats64_lock
);
4976 e1000e_update_stats(adapter
);
4978 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
4979 adapter
->tpt_old
= adapter
->stats
.tpt
;
4980 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
4981 adapter
->colc_old
= adapter
->stats
.colc
;
4983 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
4984 adapter
->gorc_old
= adapter
->stats
.gorc
;
4985 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
4986 adapter
->gotc_old
= adapter
->stats
.gotc
;
4987 spin_unlock(&adapter
->stats64_lock
);
4989 if (adapter
->flags
& FLAG_RESTART_NOW
) {
4990 schedule_work(&adapter
->reset_task
);
4991 /* return immediately since reset is imminent */
4995 e1000e_update_adaptive(&adapter
->hw
);
4997 /* Simple mode for Interrupt Throttle Rate (ITR) */
4998 if (adapter
->itr_setting
== 4) {
4999 /* Symmetric Tx/Rx gets a reduced ITR=2000;
5000 * Total asymmetrical Tx or Rx gets ITR=8000;
5001 * everyone else is between 2000-8000.
5003 u32 goc
= (adapter
->gotc
+ adapter
->gorc
) / 10000;
5004 u32 dif
= (adapter
->gotc
> adapter
->gorc
?
5005 adapter
->gotc
- adapter
->gorc
:
5006 adapter
->gorc
- adapter
->gotc
) / 10000;
5007 u32 itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
5009 e1000e_write_itr(adapter
, itr
);
5012 /* Cause software interrupt to ensure Rx ring is cleaned */
5013 if (adapter
->msix_entries
)
5014 ew32(ICS
, adapter
->rx_ring
->ims_val
);
5016 ew32(ICS
, E1000_ICS_RXDMT0
);
5018 /* flush pending descriptors to memory before detecting Tx hang */
5019 e1000e_flush_descriptors(adapter
);
5021 /* Force detection of hung controller every watchdog period */
5022 adapter
->detect_tx_hung
= true;
5024 /* With 82571 controllers, LAA may be overwritten due to controller
5025 * reset from the other port. Set the appropriate LAA in RAR[0]
5027 if (e1000e_get_laa_state_82571(hw
))
5028 hw
->mac
.ops
.rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
5030 if (adapter
->flags2
& FLAG2_CHECK_PHY_HANG
)
5031 e1000e_check_82574_phy_workaround(adapter
);
5033 /* Clear valid timestamp stuck in RXSTMPL/H due to a Rx error */
5034 if (adapter
->hwtstamp_config
.rx_filter
!= HWTSTAMP_FILTER_NONE
) {
5035 if ((adapter
->flags2
& FLAG2_CHECK_RX_HWTSTAMP
) &&
5036 (er32(TSYNCRXCTL
) & E1000_TSYNCRXCTL_VALID
)) {
5038 adapter
->rx_hwtstamp_cleared
++;
5040 adapter
->flags2
|= FLAG2_CHECK_RX_HWTSTAMP
;
5044 /* Reset the timer */
5045 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
5046 mod_timer(&adapter
->watchdog_timer
,
5047 round_jiffies(jiffies
+ 2 * HZ
));
5050 #define E1000_TX_FLAGS_CSUM 0x00000001
5051 #define E1000_TX_FLAGS_VLAN 0x00000002
5052 #define E1000_TX_FLAGS_TSO 0x00000004
5053 #define E1000_TX_FLAGS_IPV4 0x00000008
5054 #define E1000_TX_FLAGS_NO_FCS 0x00000010
5055 #define E1000_TX_FLAGS_HWTSTAMP 0x00000020
5056 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
5057 #define E1000_TX_FLAGS_VLAN_SHIFT 16
5059 static int e1000_tso(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
)
5061 struct e1000_context_desc
*context_desc
;
5062 struct e1000_buffer
*buffer_info
;
5066 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
5068 if (!skb_is_gso(skb
))
5071 if (skb_header_cloned(skb
)) {
5072 int err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
5078 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
5079 mss
= skb_shinfo(skb
)->gso_size
;
5080 if (skb
->protocol
== htons(ETH_P_IP
)) {
5081 struct iphdr
*iph
= ip_hdr(skb
);
5084 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
, iph
->daddr
,
5086 cmd_length
= E1000_TXD_CMD_IP
;
5087 ipcse
= skb_transport_offset(skb
) - 1;
5088 } else if (skb_is_gso_v6(skb
)) {
5089 ipv6_hdr(skb
)->payload_len
= 0;
5090 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
5091 &ipv6_hdr(skb
)->daddr
,
5095 ipcss
= skb_network_offset(skb
);
5096 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
5097 tucss
= skb_transport_offset(skb
);
5098 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
5100 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
5101 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
5103 i
= tx_ring
->next_to_use
;
5104 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
5105 buffer_info
= &tx_ring
->buffer_info
[i
];
5107 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
5108 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
5109 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
5110 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
5111 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
5112 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
5113 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
5114 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
5115 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
5117 buffer_info
->time_stamp
= jiffies
;
5118 buffer_info
->next_to_watch
= i
;
5121 if (i
== tx_ring
->count
)
5123 tx_ring
->next_to_use
= i
;
5128 static bool e1000_tx_csum(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
)
5130 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
5131 struct e1000_context_desc
*context_desc
;
5132 struct e1000_buffer
*buffer_info
;
5135 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
5138 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
5141 if (skb
->protocol
== cpu_to_be16(ETH_P_8021Q
))
5142 protocol
= vlan_eth_hdr(skb
)->h_vlan_encapsulated_proto
;
5144 protocol
= skb
->protocol
;
5147 case cpu_to_be16(ETH_P_IP
):
5148 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
5149 cmd_len
|= E1000_TXD_CMD_TCP
;
5151 case cpu_to_be16(ETH_P_IPV6
):
5152 /* XXX not handling all IPV6 headers */
5153 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
5154 cmd_len
|= E1000_TXD_CMD_TCP
;
5157 if (unlikely(net_ratelimit()))
5158 e_warn("checksum_partial proto=%x!\n",
5159 be16_to_cpu(protocol
));
5163 css
= skb_checksum_start_offset(skb
);
5165 i
= tx_ring
->next_to_use
;
5166 buffer_info
= &tx_ring
->buffer_info
[i
];
5167 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
5169 context_desc
->lower_setup
.ip_config
= 0;
5170 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
5171 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum_offset
;
5172 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
5173 context_desc
->tcp_seg_setup
.data
= 0;
5174 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
5176 buffer_info
->time_stamp
= jiffies
;
5177 buffer_info
->next_to_watch
= i
;
5180 if (i
== tx_ring
->count
)
5182 tx_ring
->next_to_use
= i
;
5187 static int e1000_tx_map(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
,
5188 unsigned int first
, unsigned int max_per_txd
,
5189 unsigned int nr_frags
)
5191 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
5192 struct pci_dev
*pdev
= adapter
->pdev
;
5193 struct e1000_buffer
*buffer_info
;
5194 unsigned int len
= skb_headlen(skb
);
5195 unsigned int offset
= 0, size
, count
= 0, i
;
5196 unsigned int f
, bytecount
, segs
;
5198 i
= tx_ring
->next_to_use
;
5201 buffer_info
= &tx_ring
->buffer_info
[i
];
5202 size
= min(len
, max_per_txd
);
5204 buffer_info
->length
= size
;
5205 buffer_info
->time_stamp
= jiffies
;
5206 buffer_info
->next_to_watch
= i
;
5207 buffer_info
->dma
= dma_map_single(&pdev
->dev
,
5209 size
, DMA_TO_DEVICE
);
5210 buffer_info
->mapped_as_page
= false;
5211 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
5220 if (i
== tx_ring
->count
)
5225 for (f
= 0; f
< nr_frags
; f
++) {
5226 const struct skb_frag_struct
*frag
;
5228 frag
= &skb_shinfo(skb
)->frags
[f
];
5229 len
= skb_frag_size(frag
);
5234 if (i
== tx_ring
->count
)
5237 buffer_info
= &tx_ring
->buffer_info
[i
];
5238 size
= min(len
, max_per_txd
);
5240 buffer_info
->length
= size
;
5241 buffer_info
->time_stamp
= jiffies
;
5242 buffer_info
->next_to_watch
= i
;
5243 buffer_info
->dma
= skb_frag_dma_map(&pdev
->dev
, frag
,
5246 buffer_info
->mapped_as_page
= true;
5247 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
5256 segs
= skb_shinfo(skb
)->gso_segs
? : 1;
5257 /* multiply data chunks by size of headers */
5258 bytecount
= ((segs
- 1) * skb_headlen(skb
)) + skb
->len
;
5260 tx_ring
->buffer_info
[i
].skb
= skb
;
5261 tx_ring
->buffer_info
[i
].segs
= segs
;
5262 tx_ring
->buffer_info
[i
].bytecount
= bytecount
;
5263 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
5268 dev_err(&pdev
->dev
, "Tx DMA map failed\n");
5269 buffer_info
->dma
= 0;
5275 i
+= tx_ring
->count
;
5277 buffer_info
= &tx_ring
->buffer_info
[i
];
5278 e1000_put_txbuf(tx_ring
, buffer_info
);
5284 static void e1000_tx_queue(struct e1000_ring
*tx_ring
, int tx_flags
, int count
)
5286 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
5287 struct e1000_tx_desc
*tx_desc
= NULL
;
5288 struct e1000_buffer
*buffer_info
;
5289 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
5292 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
5293 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
5295 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
5297 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
5298 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
5301 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
5302 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
5303 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
5306 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
5307 txd_lower
|= E1000_TXD_CMD_VLE
;
5308 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
5311 if (unlikely(tx_flags
& E1000_TX_FLAGS_NO_FCS
))
5312 txd_lower
&= ~(E1000_TXD_CMD_IFCS
);
5314 if (unlikely(tx_flags
& E1000_TX_FLAGS_HWTSTAMP
)) {
5315 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
5316 txd_upper
|= E1000_TXD_EXTCMD_TSTAMP
;
5319 i
= tx_ring
->next_to_use
;
5322 buffer_info
= &tx_ring
->buffer_info
[i
];
5323 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
5324 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
5325 tx_desc
->lower
.data
= cpu_to_le32(txd_lower
|
5326 buffer_info
->length
);
5327 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
5330 if (i
== tx_ring
->count
)
5332 } while (--count
> 0);
5334 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
5336 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */
5337 if (unlikely(tx_flags
& E1000_TX_FLAGS_NO_FCS
))
5338 tx_desc
->lower
.data
&= ~(cpu_to_le32(E1000_TXD_CMD_IFCS
));
5340 /* Force memory writes to complete before letting h/w
5341 * know there are new descriptors to fetch. (Only
5342 * applicable for weak-ordered memory model archs,
5347 tx_ring
->next_to_use
= i
;
5349 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
5350 e1000e_update_tdt_wa(tx_ring
, i
);
5352 writel(i
, tx_ring
->tail
);
5354 /* we need this if more than one processor can write to our tail
5355 * at a time, it synchronizes IO on IA64/Altix systems
5360 #define MINIMUM_DHCP_PACKET_SIZE 282
5361 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
5362 struct sk_buff
*skb
)
5364 struct e1000_hw
*hw
= &adapter
->hw
;
5367 if (vlan_tx_tag_present(skb
) &&
5368 !((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
5369 (adapter
->hw
.mng_cookie
.status
&
5370 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
5373 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
5376 if (((struct ethhdr
*)skb
->data
)->h_proto
!= htons(ETH_P_IP
))
5380 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+ 14);
5383 if (ip
->protocol
!= IPPROTO_UDP
)
5386 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
5387 if (ntohs(udp
->dest
) != 67)
5390 offset
= (u8
*)udp
+ 8 - skb
->data
;
5391 length
= skb
->len
- offset
;
5392 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
5398 static int __e1000_maybe_stop_tx(struct e1000_ring
*tx_ring
, int size
)
5400 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
5402 netif_stop_queue(adapter
->netdev
);
5403 /* Herbert's original patch had:
5404 * smp_mb__after_netif_stop_queue();
5405 * but since that doesn't exist yet, just open code it.
5409 /* We need to check again in a case another CPU has just
5410 * made room available.
5412 if (e1000_desc_unused(tx_ring
) < size
)
5416 netif_start_queue(adapter
->netdev
);
5417 ++adapter
->restart_queue
;
5421 static int e1000_maybe_stop_tx(struct e1000_ring
*tx_ring
, int size
)
5423 BUG_ON(size
> tx_ring
->count
);
5425 if (e1000_desc_unused(tx_ring
) >= size
)
5427 return __e1000_maybe_stop_tx(tx_ring
, size
);
5430 static netdev_tx_t
e1000_xmit_frame(struct sk_buff
*skb
,
5431 struct net_device
*netdev
)
5433 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5434 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
5436 unsigned int tx_flags
= 0;
5437 unsigned int len
= skb_headlen(skb
);
5438 unsigned int nr_frags
;
5444 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
5445 dev_kfree_skb_any(skb
);
5446 return NETDEV_TX_OK
;
5449 if (skb
->len
<= 0) {
5450 dev_kfree_skb_any(skb
);
5451 return NETDEV_TX_OK
;
5454 /* The minimum packet size with TCTL.PSP set is 17 bytes so
5455 * pad skb in order to meet this minimum size requirement
5457 if (unlikely(skb
->len
< 17)) {
5458 if (skb_pad(skb
, 17 - skb
->len
))
5459 return NETDEV_TX_OK
;
5461 skb_set_tail_pointer(skb
, 17);
5464 mss
= skb_shinfo(skb
)->gso_size
;
5468 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
5469 * points to just header, pull a few bytes of payload from
5470 * frags into skb->data
5472 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
5473 /* we do this workaround for ES2LAN, but it is un-necessary,
5474 * avoiding it could save a lot of cycles
5476 if (skb
->data_len
&& (hdr_len
== len
)) {
5477 unsigned int pull_size
;
5479 pull_size
= min_t(unsigned int, 4, skb
->data_len
);
5480 if (!__pskb_pull_tail(skb
, pull_size
)) {
5481 e_err("__pskb_pull_tail failed.\n");
5482 dev_kfree_skb_any(skb
);
5483 return NETDEV_TX_OK
;
5485 len
= skb_headlen(skb
);
5489 /* reserve a descriptor for the offload context */
5490 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
5494 count
+= DIV_ROUND_UP(len
, adapter
->tx_fifo_limit
);
5496 nr_frags
= skb_shinfo(skb
)->nr_frags
;
5497 for (f
= 0; f
< nr_frags
; f
++)
5498 count
+= DIV_ROUND_UP(skb_frag_size(&skb_shinfo(skb
)->frags
[f
]),
5499 adapter
->tx_fifo_limit
);
5501 if (adapter
->hw
.mac
.tx_pkt_filtering
)
5502 e1000_transfer_dhcp_info(adapter
, skb
);
5504 /* need: count + 2 desc gap to keep tail from touching
5505 * head, otherwise try next time
5507 if (e1000_maybe_stop_tx(tx_ring
, count
+ 2))
5508 return NETDEV_TX_BUSY
;
5510 if (vlan_tx_tag_present(skb
)) {
5511 tx_flags
|= E1000_TX_FLAGS_VLAN
;
5512 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
5515 first
= tx_ring
->next_to_use
;
5517 tso
= e1000_tso(tx_ring
, skb
);
5519 dev_kfree_skb_any(skb
);
5520 return NETDEV_TX_OK
;
5524 tx_flags
|= E1000_TX_FLAGS_TSO
;
5525 else if (e1000_tx_csum(tx_ring
, skb
))
5526 tx_flags
|= E1000_TX_FLAGS_CSUM
;
5528 /* Old method was to assume IPv4 packet by default if TSO was enabled.
5529 * 82571 hardware supports TSO capabilities for IPv6 as well...
5530 * no longer assume, we must.
5532 if (skb
->protocol
== htons(ETH_P_IP
))
5533 tx_flags
|= E1000_TX_FLAGS_IPV4
;
5535 if (unlikely(skb
->no_fcs
))
5536 tx_flags
|= E1000_TX_FLAGS_NO_FCS
;
5538 /* if count is 0 then mapping error has occurred */
5539 count
= e1000_tx_map(tx_ring
, skb
, first
, adapter
->tx_fifo_limit
,
5542 if (unlikely((skb_shinfo(skb
)->tx_flags
& SKBTX_HW_TSTAMP
) &&
5543 !adapter
->tx_hwtstamp_skb
)) {
5544 skb_shinfo(skb
)->tx_flags
|= SKBTX_IN_PROGRESS
;
5545 tx_flags
|= E1000_TX_FLAGS_HWTSTAMP
;
5546 adapter
->tx_hwtstamp_skb
= skb_get(skb
);
5547 schedule_work(&adapter
->tx_hwtstamp_work
);
5549 skb_tx_timestamp(skb
);
5552 netdev_sent_queue(netdev
, skb
->len
);
5553 e1000_tx_queue(tx_ring
, tx_flags
, count
);
5554 /* Make sure there is space in the ring for the next send. */
5555 e1000_maybe_stop_tx(tx_ring
,
5557 DIV_ROUND_UP(PAGE_SIZE
,
5558 adapter
->tx_fifo_limit
) + 2));
5560 dev_kfree_skb_any(skb
);
5561 tx_ring
->buffer_info
[first
].time_stamp
= 0;
5562 tx_ring
->next_to_use
= first
;
5565 return NETDEV_TX_OK
;
5569 * e1000_tx_timeout - Respond to a Tx Hang
5570 * @netdev: network interface device structure
5572 static void e1000_tx_timeout(struct net_device
*netdev
)
5574 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5576 /* Do the reset outside of interrupt context */
5577 adapter
->tx_timeout_count
++;
5578 schedule_work(&adapter
->reset_task
);
5581 static void e1000_reset_task(struct work_struct
*work
)
5583 struct e1000_adapter
*adapter
;
5584 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
5586 /* don't run the task if already down */
5587 if (test_bit(__E1000_DOWN
, &adapter
->state
))
5590 if (!(adapter
->flags
& FLAG_RESTART_NOW
)) {
5591 e1000e_dump(adapter
);
5592 e_err("Reset adapter unexpectedly\n");
5594 e1000e_reinit_locked(adapter
);
5598 * e1000_get_stats64 - Get System Network Statistics
5599 * @netdev: network interface device structure
5600 * @stats: rtnl_link_stats64 pointer
5602 * Returns the address of the device statistics structure.
5604 struct rtnl_link_stats64
*e1000e_get_stats64(struct net_device
*netdev
,
5605 struct rtnl_link_stats64
*stats
)
5607 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5609 memset(stats
, 0, sizeof(struct rtnl_link_stats64
));
5610 spin_lock(&adapter
->stats64_lock
);
5611 e1000e_update_stats(adapter
);
5612 /* Fill out the OS statistics structure */
5613 stats
->rx_bytes
= adapter
->stats
.gorc
;
5614 stats
->rx_packets
= adapter
->stats
.gprc
;
5615 stats
->tx_bytes
= adapter
->stats
.gotc
;
5616 stats
->tx_packets
= adapter
->stats
.gptc
;
5617 stats
->multicast
= adapter
->stats
.mprc
;
5618 stats
->collisions
= adapter
->stats
.colc
;
5622 /* RLEC on some newer hardware can be incorrect so build
5623 * our own version based on RUC and ROC
5625 stats
->rx_errors
= adapter
->stats
.rxerrc
+
5626 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
5627 adapter
->stats
.ruc
+ adapter
->stats
.roc
+ adapter
->stats
.cexterr
;
5628 stats
->rx_length_errors
= adapter
->stats
.ruc
+ adapter
->stats
.roc
;
5629 stats
->rx_crc_errors
= adapter
->stats
.crcerrs
;
5630 stats
->rx_frame_errors
= adapter
->stats
.algnerrc
;
5631 stats
->rx_missed_errors
= adapter
->stats
.mpc
;
5634 stats
->tx_errors
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
5635 stats
->tx_aborted_errors
= adapter
->stats
.ecol
;
5636 stats
->tx_window_errors
= adapter
->stats
.latecol
;
5637 stats
->tx_carrier_errors
= adapter
->stats
.tncrs
;
5639 /* Tx Dropped needs to be maintained elsewhere */
5641 spin_unlock(&adapter
->stats64_lock
);
5646 * e1000_change_mtu - Change the Maximum Transfer Unit
5647 * @netdev: network interface device structure
5648 * @new_mtu: new value for maximum frame size
5650 * Returns 0 on success, negative on failure
5652 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
5654 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5655 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
5657 /* Jumbo frame support */
5658 if ((max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) &&
5659 !(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
5660 e_err("Jumbo Frames not supported.\n");
5664 /* Supported frame sizes */
5665 if ((new_mtu
< ETH_ZLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
) ||
5666 (max_frame
> adapter
->max_hw_frame_size
)) {
5667 e_err("Unsupported MTU setting\n");
5671 /* Jumbo frame workaround on 82579 and newer requires CRC be stripped */
5672 if ((adapter
->hw
.mac
.type
>= e1000_pch2lan
) &&
5673 !(adapter
->flags2
& FLAG2_CRC_STRIPPING
) &&
5674 (new_mtu
> ETH_DATA_LEN
)) {
5675 e_err("Jumbo Frames not supported on this device when CRC stripping is disabled.\n");
5679 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
5680 usleep_range(1000, 2000);
5681 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
5682 adapter
->max_frame_size
= max_frame
;
5683 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
5684 netdev
->mtu
= new_mtu
;
5685 if (netif_running(netdev
))
5686 e1000e_down(adapter
);
5688 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
5689 * means we reserve 2 more, this pushes us to allocate from the next
5691 * i.e. RXBUFFER_2048 --> size-4096 slab
5692 * However with the new *_jumbo_rx* routines, jumbo receives will use
5696 if (max_frame
<= 2048)
5697 adapter
->rx_buffer_len
= 2048;
5699 adapter
->rx_buffer_len
= 4096;
5701 /* adjust allocation if LPE protects us, and we aren't using SBP */
5702 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
5703 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
5704 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
5707 if (netif_running(netdev
))
5710 e1000e_reset(adapter
);
5712 clear_bit(__E1000_RESETTING
, &adapter
->state
);
5717 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
5720 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5721 struct mii_ioctl_data
*data
= if_mii(ifr
);
5723 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
5728 data
->phy_id
= adapter
->hw
.phy
.addr
;
5731 e1000_phy_read_status(adapter
);
5733 switch (data
->reg_num
& 0x1F) {
5735 data
->val_out
= adapter
->phy_regs
.bmcr
;
5738 data
->val_out
= adapter
->phy_regs
.bmsr
;
5741 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
5744 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
5747 data
->val_out
= adapter
->phy_regs
.advertise
;
5750 data
->val_out
= adapter
->phy_regs
.lpa
;
5753 data
->val_out
= adapter
->phy_regs
.expansion
;
5756 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
5759 data
->val_out
= adapter
->phy_regs
.stat1000
;
5762 data
->val_out
= adapter
->phy_regs
.estatus
;
5776 * e1000e_hwtstamp_ioctl - control hardware time stamping
5777 * @netdev: network interface device structure
5778 * @ifreq: interface request
5780 * Outgoing time stamping can be enabled and disabled. Play nice and
5781 * disable it when requested, although it shouldn't cause any overhead
5782 * when no packet needs it. At most one packet in the queue may be
5783 * marked for time stamping, otherwise it would be impossible to tell
5784 * for sure to which packet the hardware time stamp belongs.
5786 * Incoming time stamping has to be configured via the hardware filters.
5787 * Not all combinations are supported, in particular event type has to be
5788 * specified. Matching the kind of event packet is not supported, with the
5789 * exception of "all V2 events regardless of level 2 or 4".
5791 static int e1000e_hwtstamp_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
)
5793 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5794 struct hwtstamp_config config
;
5797 if (copy_from_user(&config
, ifr
->ifr_data
, sizeof(config
)))
5800 adapter
->hwtstamp_config
= config
;
5802 ret_val
= e1000e_config_hwtstamp(adapter
);
5806 config
= adapter
->hwtstamp_config
;
5808 switch (config
.rx_filter
) {
5809 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC
:
5810 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC
:
5811 case HWTSTAMP_FILTER_PTP_V2_SYNC
:
5812 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ
:
5813 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ
:
5814 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ
:
5815 /* With V2 type filters which specify a Sync or Delay Request,
5816 * Path Delay Request/Response messages are also time stamped
5817 * by hardware so notify the caller the requested packets plus
5818 * some others are time stamped.
5820 config
.rx_filter
= HWTSTAMP_FILTER_SOME
;
5826 return copy_to_user(ifr
->ifr_data
, &config
,
5827 sizeof(config
)) ? -EFAULT
: 0;
5830 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
5836 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
5838 return e1000e_hwtstamp_ioctl(netdev
, ifr
);
5844 static int e1000_init_phy_wakeup(struct e1000_adapter
*adapter
, u32 wufc
)
5846 struct e1000_hw
*hw
= &adapter
->hw
;
5848 u16 phy_reg
, wuc_enable
;
5851 /* copy MAC RARs to PHY RARs */
5852 e1000_copy_rx_addrs_to_phy_ich8lan(hw
);
5854 retval
= hw
->phy
.ops
.acquire(hw
);
5856 e_err("Could not acquire PHY\n");
5860 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */
5861 retval
= e1000_enable_phy_wakeup_reg_access_bm(hw
, &wuc_enable
);
5865 /* copy MAC MTA to PHY MTA - only needed for pchlan */
5866 for (i
= 0; i
< adapter
->hw
.mac
.mta_reg_count
; i
++) {
5867 mac_reg
= E1000_READ_REG_ARRAY(hw
, E1000_MTA
, i
);
5868 hw
->phy
.ops
.write_reg_page(hw
, BM_MTA(i
),
5869 (u16
)(mac_reg
& 0xFFFF));
5870 hw
->phy
.ops
.write_reg_page(hw
, BM_MTA(i
) + 1,
5871 (u16
)((mac_reg
>> 16) & 0xFFFF));
5874 /* configure PHY Rx Control register */
5875 hw
->phy
.ops
.read_reg_page(&adapter
->hw
, BM_RCTL
, &phy_reg
);
5876 mac_reg
= er32(RCTL
);
5877 if (mac_reg
& E1000_RCTL_UPE
)
5878 phy_reg
|= BM_RCTL_UPE
;
5879 if (mac_reg
& E1000_RCTL_MPE
)
5880 phy_reg
|= BM_RCTL_MPE
;
5881 phy_reg
&= ~(BM_RCTL_MO_MASK
);
5882 if (mac_reg
& E1000_RCTL_MO_3
)
5883 phy_reg
|= (((mac_reg
& E1000_RCTL_MO_3
) >> E1000_RCTL_MO_SHIFT
)
5884 << BM_RCTL_MO_SHIFT
);
5885 if (mac_reg
& E1000_RCTL_BAM
)
5886 phy_reg
|= BM_RCTL_BAM
;
5887 if (mac_reg
& E1000_RCTL_PMCF
)
5888 phy_reg
|= BM_RCTL_PMCF
;
5889 mac_reg
= er32(CTRL
);
5890 if (mac_reg
& E1000_CTRL_RFCE
)
5891 phy_reg
|= BM_RCTL_RFCE
;
5892 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_RCTL
, phy_reg
);
5894 /* enable PHY wakeup in MAC register */
5896 ew32(WUC
, E1000_WUC_PHY_WAKE
| E1000_WUC_PME_EN
);
5898 /* configure and enable PHY wakeup in PHY registers */
5899 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_WUFC
, wufc
);
5900 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_WUC
, E1000_WUC_PME_EN
);
5902 /* activate PHY wakeup */
5903 wuc_enable
|= BM_WUC_ENABLE_BIT
| BM_WUC_HOST_WU_BIT
;
5904 retval
= e1000_disable_phy_wakeup_reg_access_bm(hw
, &wuc_enable
);
5906 e_err("Could not set PHY Host Wakeup bit\n");
5908 hw
->phy
.ops
.release(hw
);
5913 static int __e1000_shutdown(struct pci_dev
*pdev
, bool runtime
)
5915 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5916 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5917 struct e1000_hw
*hw
= &adapter
->hw
;
5918 u32 ctrl
, ctrl_ext
, rctl
, status
;
5919 /* Runtime suspend should only enable wakeup for link changes */
5920 u32 wufc
= runtime
? E1000_WUFC_LNKC
: adapter
->wol
;
5923 netif_device_detach(netdev
);
5925 if (netif_running(netdev
)) {
5926 int count
= E1000_CHECK_RESET_COUNT
;
5928 while (test_bit(__E1000_RESETTING
, &adapter
->state
) && count
--)
5929 usleep_range(10000, 20000);
5931 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
5932 e1000e_down(adapter
);
5933 e1000_free_irq(adapter
);
5935 e1000e_reset_interrupt_capability(adapter
);
5937 status
= er32(STATUS
);
5938 if (status
& E1000_STATUS_LU
)
5939 wufc
&= ~E1000_WUFC_LNKC
;
5942 e1000_setup_rctl(adapter
);
5943 e1000e_set_rx_mode(netdev
);
5945 /* turn on all-multi mode if wake on multicast is enabled */
5946 if (wufc
& E1000_WUFC_MC
) {
5948 rctl
|= E1000_RCTL_MPE
;
5953 ctrl
|= E1000_CTRL_ADVD3WUC
;
5954 if (!(adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
))
5955 ctrl
|= E1000_CTRL_EN_PHY_PWR_MGMT
;
5958 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
5959 adapter
->hw
.phy
.media_type
==
5960 e1000_media_type_internal_serdes
) {
5961 /* keep the laser running in D3 */
5962 ctrl_ext
= er32(CTRL_EXT
);
5963 ctrl_ext
|= E1000_CTRL_EXT_SDP3_DATA
;
5964 ew32(CTRL_EXT
, ctrl_ext
);
5967 if (adapter
->flags
& FLAG_IS_ICH
)
5968 e1000_suspend_workarounds_ich8lan(&adapter
->hw
);
5970 /* Allow time for pending master requests to run */
5971 e1000e_disable_pcie_master(&adapter
->hw
);
5973 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
5974 /* enable wakeup by the PHY */
5975 retval
= e1000_init_phy_wakeup(adapter
, wufc
);
5979 /* enable wakeup by the MAC */
5981 ew32(WUC
, E1000_WUC_PME_EN
);
5988 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
)
5989 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
5991 /* Release control of h/w to f/w. If f/w is AMT enabled, this
5992 * would have already happened in close and is redundant.
5994 e1000e_release_hw_control(adapter
);
5996 pci_clear_master(pdev
);
5998 /* The pci-e switch on some quad port adapters will report a
5999 * correctable error when the MAC transitions from D0 to D3. To
6000 * prevent this we need to mask off the correctable errors on the
6001 * downstream port of the pci-e switch.
6003 * We don't have the associated upstream bridge while assigning
6004 * the PCI device into guest. For example, the KVM on power is
6007 if (adapter
->flags
& FLAG_IS_QUAD_PORT
) {
6008 struct pci_dev
*us_dev
= pdev
->bus
->self
;
6014 pcie_capability_read_word(us_dev
, PCI_EXP_DEVCTL
, &devctl
);
6015 pcie_capability_write_word(us_dev
, PCI_EXP_DEVCTL
,
6016 (devctl
& ~PCI_EXP_DEVCTL_CERE
));
6018 pci_save_state(pdev
);
6019 pci_prepare_to_sleep(pdev
);
6021 pcie_capability_write_word(us_dev
, PCI_EXP_DEVCTL
, devctl
);
6028 * e1000e_disable_aspm - Disable ASPM states
6029 * @pdev: pointer to PCI device struct
6030 * @state: bit-mask of ASPM states to disable
6032 * Some devices *must* have certain ASPM states disabled per hardware errata.
6034 static void e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
6036 struct pci_dev
*parent
= pdev
->bus
->self
;
6037 u16 aspm_dis_mask
= 0;
6038 u16 pdev_aspmc
, parent_aspmc
;
6041 case PCIE_LINK_STATE_L0S
:
6042 case PCIE_LINK_STATE_L0S
| PCIE_LINK_STATE_L1
:
6043 aspm_dis_mask
|= PCI_EXP_LNKCTL_ASPM_L0S
;
6044 /* fall-through - can't have L1 without L0s */
6045 case PCIE_LINK_STATE_L1
:
6046 aspm_dis_mask
|= PCI_EXP_LNKCTL_ASPM_L1
;
6052 pcie_capability_read_word(pdev
, PCI_EXP_LNKCTL
, &pdev_aspmc
);
6053 pdev_aspmc
&= PCI_EXP_LNKCTL_ASPMC
;
6056 pcie_capability_read_word(parent
, PCI_EXP_LNKCTL
,
6058 parent_aspmc
&= PCI_EXP_LNKCTL_ASPMC
;
6061 /* Nothing to do if the ASPM states to be disabled already are */
6062 if (!(pdev_aspmc
& aspm_dis_mask
) &&
6063 (!parent
|| !(parent_aspmc
& aspm_dis_mask
)))
6066 dev_info(&pdev
->dev
, "Disabling ASPM %s %s\n",
6067 (aspm_dis_mask
& pdev_aspmc
& PCI_EXP_LNKCTL_ASPM_L0S
) ?
6069 (aspm_dis_mask
& pdev_aspmc
& PCI_EXP_LNKCTL_ASPM_L1
) ?
6072 #ifdef CONFIG_PCIEASPM
6073 pci_disable_link_state_locked(pdev
, state
);
6075 /* Double-check ASPM control. If not disabled by the above, the
6076 * BIOS is preventing that from happening (or CONFIG_PCIEASPM is
6077 * not enabled); override by writing PCI config space directly.
6079 pcie_capability_read_word(pdev
, PCI_EXP_LNKCTL
, &pdev_aspmc
);
6080 pdev_aspmc
&= PCI_EXP_LNKCTL_ASPMC
;
6082 if (!(aspm_dis_mask
& pdev_aspmc
))
6086 /* Both device and parent should have the same ASPM setting.
6087 * Disable ASPM in downstream component first and then upstream.
6089 pcie_capability_clear_word(pdev
, PCI_EXP_LNKCTL
, aspm_dis_mask
);
6092 pcie_capability_clear_word(parent
, PCI_EXP_LNKCTL
,
6097 static bool e1000e_pm_ready(struct e1000_adapter
*adapter
)
6099 return !!adapter
->tx_ring
->buffer_info
;
6102 static int __e1000_resume(struct pci_dev
*pdev
)
6104 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6105 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6106 struct e1000_hw
*hw
= &adapter
->hw
;
6107 u16 aspm_disable_flag
= 0;
6110 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
6111 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
6112 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
6113 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
6114 if (aspm_disable_flag
)
6115 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
6117 pci_set_master(pdev
);
6119 e1000e_set_interrupt_capability(adapter
);
6120 if (netif_running(netdev
)) {
6121 err
= e1000_request_irq(adapter
);
6126 if (hw
->mac
.type
>= e1000_pch2lan
)
6127 e1000_resume_workarounds_pchlan(&adapter
->hw
);
6129 e1000e_power_up_phy(adapter
);
6131 /* report the system wakeup cause from S3/S4 */
6132 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
6135 e1e_rphy(&adapter
->hw
, BM_WUS
, &phy_data
);
6137 e_info("PHY Wakeup cause - %s\n",
6138 phy_data
& E1000_WUS_EX
? "Unicast Packet" :
6139 phy_data
& E1000_WUS_MC
? "Multicast Packet" :
6140 phy_data
& E1000_WUS_BC
? "Broadcast Packet" :
6141 phy_data
& E1000_WUS_MAG
? "Magic Packet" :
6142 phy_data
& E1000_WUS_LNKC
?
6143 "Link Status Change" : "other");
6145 e1e_wphy(&adapter
->hw
, BM_WUS
, ~0);
6147 u32 wus
= er32(WUS
);
6149 e_info("MAC Wakeup cause - %s\n",
6150 wus
& E1000_WUS_EX
? "Unicast Packet" :
6151 wus
& E1000_WUS_MC
? "Multicast Packet" :
6152 wus
& E1000_WUS_BC
? "Broadcast Packet" :
6153 wus
& E1000_WUS_MAG
? "Magic Packet" :
6154 wus
& E1000_WUS_LNKC
? "Link Status Change" :
6160 e1000e_reset(adapter
);
6162 e1000_init_manageability_pt(adapter
);
6164 if (netif_running(netdev
))
6167 netif_device_attach(netdev
);
6169 /* If the controller has AMT, do not set DRV_LOAD until the interface
6170 * is up. For all other cases, let the f/w know that the h/w is now
6171 * under the control of the driver.
6173 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6174 e1000e_get_hw_control(adapter
);
6179 #ifdef CONFIG_PM_SLEEP
6180 static int e1000_suspend(struct device
*dev
)
6182 struct pci_dev
*pdev
= to_pci_dev(dev
);
6184 return __e1000_shutdown(pdev
, false);
6187 static int e1000_resume(struct device
*dev
)
6189 struct pci_dev
*pdev
= to_pci_dev(dev
);
6190 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6191 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6193 if (e1000e_pm_ready(adapter
))
6194 adapter
->idle_check
= true;
6196 return __e1000_resume(pdev
);
6198 #endif /* CONFIG_PM_SLEEP */
6200 #ifdef CONFIG_PM_RUNTIME
6201 static int e1000_runtime_suspend(struct device
*dev
)
6203 struct pci_dev
*pdev
= to_pci_dev(dev
);
6204 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6205 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6207 if (!e1000e_pm_ready(adapter
))
6210 return __e1000_shutdown(pdev
, true);
6213 static int e1000_idle(struct device
*dev
)
6215 struct pci_dev
*pdev
= to_pci_dev(dev
);
6216 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6217 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6219 if (!e1000e_pm_ready(adapter
))
6222 if (adapter
->idle_check
) {
6223 adapter
->idle_check
= false;
6224 if (!e1000e_has_link(adapter
))
6225 pm_schedule_suspend(dev
, MSEC_PER_SEC
);
6231 static int e1000_runtime_resume(struct device
*dev
)
6233 struct pci_dev
*pdev
= to_pci_dev(dev
);
6234 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6235 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6237 if (!e1000e_pm_ready(adapter
))
6240 adapter
->idle_check
= !dev
->power
.runtime_auto
;
6241 return __e1000_resume(pdev
);
6243 #endif /* CONFIG_PM_RUNTIME */
6244 #endif /* CONFIG_PM */
6246 static void e1000_shutdown(struct pci_dev
*pdev
)
6248 __e1000_shutdown(pdev
, false);
6251 #ifdef CONFIG_NET_POLL_CONTROLLER
6253 static irqreturn_t
e1000_intr_msix(int __always_unused irq
, void *data
)
6255 struct net_device
*netdev
= data
;
6256 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6258 if (adapter
->msix_entries
) {
6259 int vector
, msix_irq
;
6262 msix_irq
= adapter
->msix_entries
[vector
].vector
;
6263 disable_irq(msix_irq
);
6264 e1000_intr_msix_rx(msix_irq
, netdev
);
6265 enable_irq(msix_irq
);
6268 msix_irq
= adapter
->msix_entries
[vector
].vector
;
6269 disable_irq(msix_irq
);
6270 e1000_intr_msix_tx(msix_irq
, netdev
);
6271 enable_irq(msix_irq
);
6274 msix_irq
= adapter
->msix_entries
[vector
].vector
;
6275 disable_irq(msix_irq
);
6276 e1000_msix_other(msix_irq
, netdev
);
6277 enable_irq(msix_irq
);
6285 * @netdev: network interface device structure
6287 * Polling 'interrupt' - used by things like netconsole to send skbs
6288 * without having to re-enable interrupts. It's not called while
6289 * the interrupt routine is executing.
6291 static void e1000_netpoll(struct net_device
*netdev
)
6293 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6295 switch (adapter
->int_mode
) {
6296 case E1000E_INT_MODE_MSIX
:
6297 e1000_intr_msix(adapter
->pdev
->irq
, netdev
);
6299 case E1000E_INT_MODE_MSI
:
6300 disable_irq(adapter
->pdev
->irq
);
6301 e1000_intr_msi(adapter
->pdev
->irq
, netdev
);
6302 enable_irq(adapter
->pdev
->irq
);
6304 default: /* E1000E_INT_MODE_LEGACY */
6305 disable_irq(adapter
->pdev
->irq
);
6306 e1000_intr(adapter
->pdev
->irq
, netdev
);
6307 enable_irq(adapter
->pdev
->irq
);
6314 * e1000_io_error_detected - called when PCI error is detected
6315 * @pdev: Pointer to PCI device
6316 * @state: The current pci connection state
6318 * This function is called after a PCI bus error affecting
6319 * this device has been detected.
6321 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
6322 pci_channel_state_t state
)
6324 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6325 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6327 netif_device_detach(netdev
);
6329 if (state
== pci_channel_io_perm_failure
)
6330 return PCI_ERS_RESULT_DISCONNECT
;
6332 if (netif_running(netdev
))
6333 e1000e_down(adapter
);
6334 pci_disable_device(pdev
);
6336 /* Request a slot slot reset. */
6337 return PCI_ERS_RESULT_NEED_RESET
;
6341 * e1000_io_slot_reset - called after the pci bus has been reset.
6342 * @pdev: Pointer to PCI device
6344 * Restart the card from scratch, as if from a cold-boot. Implementation
6345 * resembles the first-half of the e1000_resume routine.
6347 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
6349 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6350 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6351 struct e1000_hw
*hw
= &adapter
->hw
;
6352 u16 aspm_disable_flag
= 0;
6354 pci_ers_result_t result
;
6356 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
6357 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
6358 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
6359 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
6360 if (aspm_disable_flag
)
6361 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
6363 err
= pci_enable_device_mem(pdev
);
6366 "Cannot re-enable PCI device after reset.\n");
6367 result
= PCI_ERS_RESULT_DISCONNECT
;
6369 pdev
->state_saved
= true;
6370 pci_restore_state(pdev
);
6371 pci_set_master(pdev
);
6373 pci_enable_wake(pdev
, PCI_D3hot
, 0);
6374 pci_enable_wake(pdev
, PCI_D3cold
, 0);
6376 e1000e_reset(adapter
);
6378 result
= PCI_ERS_RESULT_RECOVERED
;
6381 pci_cleanup_aer_uncorrect_error_status(pdev
);
6387 * e1000_io_resume - called when traffic can start flowing again.
6388 * @pdev: Pointer to PCI device
6390 * This callback is called when the error recovery driver tells us that
6391 * its OK to resume normal operation. Implementation resembles the
6392 * second-half of the e1000_resume routine.
6394 static void e1000_io_resume(struct pci_dev
*pdev
)
6396 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6397 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6399 e1000_init_manageability_pt(adapter
);
6401 if (netif_running(netdev
)) {
6402 if (e1000e_up(adapter
)) {
6404 "can't bring device back up after reset\n");
6409 netif_device_attach(netdev
);
6411 /* If the controller has AMT, do not set DRV_LOAD until the interface
6412 * is up. For all other cases, let the f/w know that the h/w is now
6413 * under the control of the driver.
6415 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6416 e1000e_get_hw_control(adapter
);
6419 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
6421 struct e1000_hw
*hw
= &adapter
->hw
;
6422 struct net_device
*netdev
= adapter
->netdev
;
6424 u8 pba_str
[E1000_PBANUM_LENGTH
];
6426 /* print bus type/speed/width info */
6427 e_info("(PCI Express:2.5GT/s:%s) %pM\n",
6429 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
6433 e_info("Intel(R) PRO/%s Network Connection\n",
6434 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
6435 ret_val
= e1000_read_pba_string_generic(hw
, pba_str
,
6436 E1000_PBANUM_LENGTH
);
6438 strlcpy((char *)pba_str
, "Unknown", sizeof(pba_str
));
6439 e_info("MAC: %d, PHY: %d, PBA No: %s\n",
6440 hw
->mac
.type
, hw
->phy
.type
, pba_str
);
6443 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
6445 struct e1000_hw
*hw
= &adapter
->hw
;
6449 if (hw
->mac
.type
!= e1000_82573
)
6452 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
6454 if (!ret_val
&& (!(buf
& (1 << 0)))) {
6455 /* Deep Smart Power Down (DSPD) */
6456 dev_warn(&adapter
->pdev
->dev
,
6457 "Warning: detected DSPD enabled in EEPROM\n");
6461 static int e1000_set_features(struct net_device
*netdev
,
6462 netdev_features_t features
)
6464 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6465 netdev_features_t changed
= features
^ netdev
->features
;
6467 if (changed
& (NETIF_F_TSO
| NETIF_F_TSO6
))
6468 adapter
->flags
|= FLAG_TSO_FORCE
;
6470 if (!(changed
& (NETIF_F_HW_VLAN_CTAG_RX
| NETIF_F_HW_VLAN_CTAG_TX
|
6471 NETIF_F_RXCSUM
| NETIF_F_RXHASH
| NETIF_F_RXFCS
|
6475 if (changed
& NETIF_F_RXFCS
) {
6476 if (features
& NETIF_F_RXFCS
) {
6477 adapter
->flags2
&= ~FLAG2_CRC_STRIPPING
;
6479 /* We need to take it back to defaults, which might mean
6480 * stripping is still disabled at the adapter level.
6482 if (adapter
->flags2
& FLAG2_DFLT_CRC_STRIPPING
)
6483 adapter
->flags2
|= FLAG2_CRC_STRIPPING
;
6485 adapter
->flags2
&= ~FLAG2_CRC_STRIPPING
;
6489 netdev
->features
= features
;
6491 if (netif_running(netdev
))
6492 e1000e_reinit_locked(adapter
);
6494 e1000e_reset(adapter
);
6499 static const struct net_device_ops e1000e_netdev_ops
= {
6500 .ndo_open
= e1000_open
,
6501 .ndo_stop
= e1000_close
,
6502 .ndo_start_xmit
= e1000_xmit_frame
,
6503 .ndo_get_stats64
= e1000e_get_stats64
,
6504 .ndo_set_rx_mode
= e1000e_set_rx_mode
,
6505 .ndo_set_mac_address
= e1000_set_mac
,
6506 .ndo_change_mtu
= e1000_change_mtu
,
6507 .ndo_do_ioctl
= e1000_ioctl
,
6508 .ndo_tx_timeout
= e1000_tx_timeout
,
6509 .ndo_validate_addr
= eth_validate_addr
,
6511 .ndo_vlan_rx_add_vid
= e1000_vlan_rx_add_vid
,
6512 .ndo_vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
,
6513 #ifdef CONFIG_NET_POLL_CONTROLLER
6514 .ndo_poll_controller
= e1000_netpoll
,
6516 .ndo_set_features
= e1000_set_features
,
6520 * e1000_probe - Device Initialization Routine
6521 * @pdev: PCI device information struct
6522 * @ent: entry in e1000_pci_tbl
6524 * Returns 0 on success, negative on failure
6526 * e1000_probe initializes an adapter identified by a pci_dev structure.
6527 * The OS initialization, configuring of the adapter private structure,
6528 * and a hardware reset occur.
6530 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
6532 struct net_device
*netdev
;
6533 struct e1000_adapter
*adapter
;
6534 struct e1000_hw
*hw
;
6535 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
6536 resource_size_t mmio_start
, mmio_len
;
6537 resource_size_t flash_start
, flash_len
;
6538 static int cards_found
;
6539 u16 aspm_disable_flag
= 0;
6540 int bars
, i
, err
, pci_using_dac
;
6541 u16 eeprom_data
= 0;
6542 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
6544 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
6545 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
6546 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L1
)
6547 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
6548 if (aspm_disable_flag
)
6549 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
6551 err
= pci_enable_device_mem(pdev
);
6556 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(64));
6558 err
= dma_set_coherent_mask(&pdev
->dev
, DMA_BIT_MASK(64));
6562 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(32));
6564 err
= dma_set_coherent_mask(&pdev
->dev
,
6568 "No usable DMA configuration, aborting\n");
6574 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
);
6575 err
= pci_request_selected_regions_exclusive(pdev
, bars
,
6576 e1000e_driver_name
);
6580 /* AER (Advanced Error Reporting) hooks */
6581 pci_enable_pcie_error_reporting(pdev
);
6583 pci_set_master(pdev
);
6584 /* PCI config space info */
6585 err
= pci_save_state(pdev
);
6587 goto err_alloc_etherdev
;
6590 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
6592 goto err_alloc_etherdev
;
6594 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
6596 netdev
->irq
= pdev
->irq
;
6598 pci_set_drvdata(pdev
, netdev
);
6599 adapter
= netdev_priv(netdev
);
6601 adapter
->netdev
= netdev
;
6602 adapter
->pdev
= pdev
;
6604 adapter
->pba
= ei
->pba
;
6605 adapter
->flags
= ei
->flags
;
6606 adapter
->flags2
= ei
->flags2
;
6607 adapter
->hw
.adapter
= adapter
;
6608 adapter
->hw
.mac
.type
= ei
->mac
;
6609 adapter
->max_hw_frame_size
= ei
->max_hw_frame_size
;
6610 adapter
->msg_enable
= netif_msg_init(debug
, DEFAULT_MSG_ENABLE
);
6612 mmio_start
= pci_resource_start(pdev
, 0);
6613 mmio_len
= pci_resource_len(pdev
, 0);
6616 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
6617 if (!adapter
->hw
.hw_addr
)
6620 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
6621 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
6622 flash_start
= pci_resource_start(pdev
, 1);
6623 flash_len
= pci_resource_len(pdev
, 1);
6624 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
6625 if (!adapter
->hw
.flash_address
)
6629 /* Set default EEE advertisement */
6630 if (adapter
->flags2
& FLAG2_HAS_EEE
)
6631 adapter
->eee_advert
= MDIO_EEE_100TX
| MDIO_EEE_1000T
;
6633 /* construct the net_device struct */
6634 netdev
->netdev_ops
= &e1000e_netdev_ops
;
6635 e1000e_set_ethtool_ops(netdev
);
6636 netdev
->watchdog_timeo
= 5 * HZ
;
6637 netif_napi_add(netdev
, &adapter
->napi
, e1000e_poll
, 64);
6638 strlcpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
));
6640 netdev
->mem_start
= mmio_start
;
6641 netdev
->mem_end
= mmio_start
+ mmio_len
;
6643 adapter
->bd_number
= cards_found
++;
6645 e1000e_check_options(adapter
);
6647 /* setup adapter struct */
6648 err
= e1000_sw_init(adapter
);
6652 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
6653 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
6654 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
6656 err
= ei
->get_variants(adapter
);
6660 if ((adapter
->flags
& FLAG_IS_ICH
) &&
6661 (adapter
->flags
& FLAG_READ_ONLY_NVM
))
6662 e1000e_write_protect_nvm_ich8lan(&adapter
->hw
);
6664 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
6666 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
6668 /* Copper options */
6669 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
6670 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
6671 adapter
->hw
.phy
.disable_polarity_correction
= 0;
6672 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
6675 if (hw
->phy
.ops
.check_reset_block
&& hw
->phy
.ops
.check_reset_block(hw
))
6676 dev_info(&pdev
->dev
,
6677 "PHY reset is blocked due to SOL/IDER session.\n");
6679 /* Set initial default active device features */
6680 netdev
->features
= (NETIF_F_SG
|
6681 NETIF_F_HW_VLAN_CTAG_RX
|
6682 NETIF_F_HW_VLAN_CTAG_TX
|
6689 /* Set user-changeable features (subset of all device features) */
6690 netdev
->hw_features
= netdev
->features
;
6691 netdev
->hw_features
|= NETIF_F_RXFCS
;
6692 netdev
->priv_flags
|= IFF_SUPP_NOFCS
;
6693 netdev
->hw_features
|= NETIF_F_RXALL
;
6695 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
6696 netdev
->features
|= NETIF_F_HW_VLAN_CTAG_FILTER
;
6698 netdev
->vlan_features
|= (NETIF_F_SG
|
6703 netdev
->priv_flags
|= IFF_UNICAST_FLT
;
6705 if (pci_using_dac
) {
6706 netdev
->features
|= NETIF_F_HIGHDMA
;
6707 netdev
->vlan_features
|= NETIF_F_HIGHDMA
;
6710 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
6711 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
6713 /* before reading the NVM, reset the controller to
6714 * put the device in a known good starting state
6716 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
6718 /* systems with ASPM and others may see the checksum fail on the first
6719 * attempt. Let's give it a few tries
6722 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
6725 dev_err(&pdev
->dev
, "The NVM Checksum Is Not Valid\n");
6731 e1000_eeprom_checks(adapter
);
6733 /* copy the MAC address */
6734 if (e1000e_read_mac_addr(&adapter
->hw
))
6736 "NVM Read Error while reading MAC address\n");
6738 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
6740 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
6741 dev_err(&pdev
->dev
, "Invalid MAC Address: %pM\n",
6747 init_timer(&adapter
->watchdog_timer
);
6748 adapter
->watchdog_timer
.function
= e1000_watchdog
;
6749 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
6751 init_timer(&adapter
->phy_info_timer
);
6752 adapter
->phy_info_timer
.function
= e1000_update_phy_info
;
6753 adapter
->phy_info_timer
.data
= (unsigned long)adapter
;
6755 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
6756 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
6757 INIT_WORK(&adapter
->downshift_task
, e1000e_downshift_workaround
);
6758 INIT_WORK(&adapter
->update_phy_task
, e1000e_update_phy_task
);
6759 INIT_WORK(&adapter
->print_hang_task
, e1000_print_hw_hang
);
6761 /* Initialize link parameters. User can change them with ethtool */
6762 adapter
->hw
.mac
.autoneg
= 1;
6763 adapter
->fc_autoneg
= true;
6764 adapter
->hw
.fc
.requested_mode
= e1000_fc_default
;
6765 adapter
->hw
.fc
.current_mode
= e1000_fc_default
;
6766 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
6768 /* Initial Wake on LAN setting - If APM wake is enabled in
6769 * the EEPROM, enable the ACPI Magic Packet filter
6771 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
6772 /* APME bit in EEPROM is mapped to WUC.APME */
6773 eeprom_data
= er32(WUC
);
6774 eeprom_apme_mask
= E1000_WUC_APME
;
6775 if ((hw
->mac
.type
> e1000_ich10lan
) &&
6776 (eeprom_data
& E1000_WUC_PHY_WAKE
))
6777 adapter
->flags2
|= FLAG2_HAS_PHY_WAKEUP
;
6778 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
6779 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
6780 (adapter
->hw
.bus
.func
== 1))
6781 e1000_read_nvm(&adapter
->hw
, NVM_INIT_CONTROL3_PORT_B
,
6784 e1000_read_nvm(&adapter
->hw
, NVM_INIT_CONTROL3_PORT_A
,
6788 /* fetch WoL from EEPROM */
6789 if (eeprom_data
& eeprom_apme_mask
)
6790 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
6792 /* now that we have the eeprom settings, apply the special cases
6793 * where the eeprom may be wrong or the board simply won't support
6794 * wake on lan on a particular port
6796 if (!(adapter
->flags
& FLAG_HAS_WOL
))
6797 adapter
->eeprom_wol
= 0;
6799 /* initialize the wol settings based on the eeprom settings */
6800 adapter
->wol
= adapter
->eeprom_wol
;
6802 /* make sure adapter isn't asleep if manageability is enabled */
6803 if (adapter
->wol
|| (adapter
->flags
& FLAG_MNG_PT_ENABLED
) ||
6804 (hw
->mac
.ops
.check_mng_mode(hw
)))
6805 device_wakeup_enable(&pdev
->dev
);
6807 /* save off EEPROM version number */
6808 e1000_read_nvm(&adapter
->hw
, 5, 1, &adapter
->eeprom_vers
);
6810 /* reset the hardware with the new settings */
6811 e1000e_reset(adapter
);
6813 /* If the controller has AMT, do not set DRV_LOAD until the interface
6814 * is up. For all other cases, let the f/w know that the h/w is now
6815 * under the control of the driver.
6817 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6818 e1000e_get_hw_control(adapter
);
6820 strlcpy(netdev
->name
, "eth%d", sizeof(netdev
->name
));
6821 err
= register_netdev(netdev
);
6825 /* carrier off reporting is important to ethtool even BEFORE open */
6826 netif_carrier_off(netdev
);
6828 /* init PTP hardware clock */
6829 e1000e_ptp_init(adapter
);
6831 e1000_print_device_info(adapter
);
6833 if (pci_dev_run_wake(pdev
))
6834 pm_runtime_put_noidle(&pdev
->dev
);
6839 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6840 e1000e_release_hw_control(adapter
);
6842 if (hw
->phy
.ops
.check_reset_block
&& !hw
->phy
.ops
.check_reset_block(hw
))
6843 e1000_phy_hw_reset(&adapter
->hw
);
6845 kfree(adapter
->tx_ring
);
6846 kfree(adapter
->rx_ring
);
6848 if (adapter
->hw
.flash_address
)
6849 iounmap(adapter
->hw
.flash_address
);
6850 e1000e_reset_interrupt_capability(adapter
);
6852 iounmap(adapter
->hw
.hw_addr
);
6854 free_netdev(netdev
);
6856 pci_release_selected_regions(pdev
,
6857 pci_select_bars(pdev
, IORESOURCE_MEM
));
6860 pci_disable_device(pdev
);
6865 * e1000_remove - Device Removal Routine
6866 * @pdev: PCI device information struct
6868 * e1000_remove is called by the PCI subsystem to alert the driver
6869 * that it should release a PCI device. The could be caused by a
6870 * Hot-Plug event, or because the driver is going to be removed from
6873 static void e1000_remove(struct pci_dev
*pdev
)
6875 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6876 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6877 bool down
= test_bit(__E1000_DOWN
, &adapter
->state
);
6879 e1000e_ptp_remove(adapter
);
6881 /* The timers may be rescheduled, so explicitly disable them
6882 * from being rescheduled.
6885 set_bit(__E1000_DOWN
, &adapter
->state
);
6886 del_timer_sync(&adapter
->watchdog_timer
);
6887 del_timer_sync(&adapter
->phy_info_timer
);
6889 cancel_work_sync(&adapter
->reset_task
);
6890 cancel_work_sync(&adapter
->watchdog_task
);
6891 cancel_work_sync(&adapter
->downshift_task
);
6892 cancel_work_sync(&adapter
->update_phy_task
);
6893 cancel_work_sync(&adapter
->print_hang_task
);
6895 if (adapter
->flags
& FLAG_HAS_HW_TIMESTAMP
) {
6896 cancel_work_sync(&adapter
->tx_hwtstamp_work
);
6897 if (adapter
->tx_hwtstamp_skb
) {
6898 dev_kfree_skb_any(adapter
->tx_hwtstamp_skb
);
6899 adapter
->tx_hwtstamp_skb
= NULL
;
6903 if (!(netdev
->flags
& IFF_UP
))
6904 e1000_power_down_phy(adapter
);
6906 /* Don't lie to e1000_close() down the road. */
6908 clear_bit(__E1000_DOWN
, &adapter
->state
);
6909 unregister_netdev(netdev
);
6911 if (pci_dev_run_wake(pdev
))
6912 pm_runtime_get_noresume(&pdev
->dev
);
6914 /* Release control of h/w to f/w. If f/w is AMT enabled, this
6915 * would have already happened in close and is redundant.
6917 e1000e_release_hw_control(adapter
);
6919 e1000e_reset_interrupt_capability(adapter
);
6920 kfree(adapter
->tx_ring
);
6921 kfree(adapter
->rx_ring
);
6923 iounmap(adapter
->hw
.hw_addr
);
6924 if (adapter
->hw
.flash_address
)
6925 iounmap(adapter
->hw
.flash_address
);
6926 pci_release_selected_regions(pdev
,
6927 pci_select_bars(pdev
, IORESOURCE_MEM
));
6929 free_netdev(netdev
);
6932 pci_disable_pcie_error_reporting(pdev
);
6934 pci_disable_device(pdev
);
6937 /* PCI Error Recovery (ERS) */
6938 static const struct pci_error_handlers e1000_err_handler
= {
6939 .error_detected
= e1000_io_error_detected
,
6940 .slot_reset
= e1000_io_slot_reset
,
6941 .resume
= e1000_io_resume
,
6944 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl
) = {
6945 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
6946 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
6947 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
6948 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
),
6950 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
6951 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
6952 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
6953 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
6954 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
6956 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
6957 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
6958 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
6959 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
6961 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
6962 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
6963 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
6965 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574L
), board_82574
},
6966 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574LA
), board_82574
},
6967 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82583V
), board_82583
},
6969 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
6970 board_80003es2lan
},
6971 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
6972 board_80003es2lan
},
6973 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
6974 board_80003es2lan
},
6975 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
6976 board_80003es2lan
},
6978 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
6979 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
6980 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
6981 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
6982 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
6983 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
6984 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
6985 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_82567V_3
), board_ich8lan
},
6987 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
6988 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
6989 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
6990 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
6991 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
6992 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_BM
), board_ich9lan
},
6993 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
6994 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
6995 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
6997 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
6998 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
6999 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
7001 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LM
), board_ich10lan
},
7002 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LF
), board_ich10lan
},
7003 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_V
), board_ich10lan
},
7005 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LM
), board_pchlan
},
7006 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LC
), board_pchlan
},
7007 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DM
), board_pchlan
},
7008 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DC
), board_pchlan
},
7010 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_LM
), board_pch2lan
},
7011 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_V
), board_pch2lan
},
7013 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPT_I217_LM
), board_pch_lpt
},
7014 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPT_I217_V
), board_pch_lpt
},
7015 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPTLP_I218_LM
), board_pch_lpt
},
7016 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPTLP_I218_V
), board_pch_lpt
},
7017 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_I218_LM2
), board_pch_lpt
},
7018 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_I218_V2
), board_pch_lpt
},
7019 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_I218_LM3
), board_pch_lpt
},
7020 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_I218_V3
), board_pch_lpt
},
7022 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */
7024 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
7027 static const struct dev_pm_ops e1000_pm_ops
= {
7028 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend
, e1000_resume
)
7029 SET_RUNTIME_PM_OPS(e1000_runtime_suspend
, e1000_runtime_resume
,
7034 /* PCI Device API Driver */
7035 static struct pci_driver e1000_driver
= {
7036 .name
= e1000e_driver_name
,
7037 .id_table
= e1000_pci_tbl
,
7038 .probe
= e1000_probe
,
7039 .remove
= e1000_remove
,
7042 .pm
= &e1000_pm_ops
,
7045 .shutdown
= e1000_shutdown
,
7046 .err_handler
= &e1000_err_handler
7050 * e1000_init_module - Driver Registration Routine
7052 * e1000_init_module is the first routine called when the driver is
7053 * loaded. All it does is register with the PCI subsystem.
7055 static int __init
e1000_init_module(void)
7058 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
7059 e1000e_driver_version
);
7060 pr_info("Copyright(c) 1999 - 2013 Intel Corporation.\n");
7061 ret
= pci_register_driver(&e1000_driver
);
7065 module_init(e1000_init_module
);
7068 * e1000_exit_module - Driver Exit Cleanup Routine
7070 * e1000_exit_module is called just before the driver is removed
7073 static void __exit
e1000_exit_module(void)
7075 pci_unregister_driver(&e1000_driver
);
7077 module_exit(e1000_exit_module
);
7079 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
7080 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
7081 MODULE_LICENSE("GPL");
7082 MODULE_VERSION(DRV_VERSION
);