1 /*************************************************************************
2 * myri10ge.c: Myricom Myri-10G Ethernet driver.
4 * Copyright (C) 2005 - 2007 Myricom, Inc.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of Myricom, Inc. nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
32 * If the eeprom on your board is not recent enough, you will need to get a
33 * newer firmware image at:
34 * http://www.myri.com/scs/download-Myri10GE.html
36 * Contact Information:
38 * Myricom, Inc., 325N Santa Anita Avenue, Arcadia, CA 91006
39 *************************************************************************/
41 #include <linux/tcp.h>
42 #include <linux/netdevice.h>
43 #include <linux/skbuff.h>
44 #include <linux/string.h>
45 #include <linux/module.h>
46 #include <linux/pci.h>
47 #include <linux/dma-mapping.h>
48 #include <linux/etherdevice.h>
49 #include <linux/if_ether.h>
50 #include <linux/if_vlan.h>
52 #include <linux/inet.h>
54 #include <linux/ethtool.h>
55 #include <linux/firmware.h>
56 #include <linux/delay.h>
57 #include <linux/version.h>
58 #include <linux/timer.h>
59 #include <linux/vmalloc.h>
60 #include <linux/crc32.h>
61 #include <linux/moduleparam.h>
63 #include <linux/log2.h>
64 #include <net/checksum.h>
65 #include <asm/byteorder.h>
67 #include <asm/processor.h>
72 #include "myri10ge_mcp.h"
73 #include "myri10ge_mcp_gen_header.h"
75 #define MYRI10GE_VERSION_STR "1.3.2-1.269"
77 MODULE_DESCRIPTION("Myricom 10G driver (10GbE)");
78 MODULE_AUTHOR("Maintainer: help@myri.com");
79 MODULE_VERSION(MYRI10GE_VERSION_STR
);
80 MODULE_LICENSE("Dual BSD/GPL");
82 #define MYRI10GE_MAX_ETHER_MTU 9014
84 #define MYRI10GE_ETH_STOPPED 0
85 #define MYRI10GE_ETH_STOPPING 1
86 #define MYRI10GE_ETH_STARTING 2
87 #define MYRI10GE_ETH_RUNNING 3
88 #define MYRI10GE_ETH_OPEN_FAILED 4
90 #define MYRI10GE_EEPROM_STRINGS_SIZE 256
91 #define MYRI10GE_MAX_SEND_DESC_TSO ((65536 / 2048) * 2)
93 #define MYRI10GE_NO_CONFIRM_DATA htonl(0xffffffff)
94 #define MYRI10GE_NO_RESPONSE_RESULT 0xffffffff
96 #define MYRI10GE_ALLOC_ORDER 0
97 #define MYRI10GE_ALLOC_SIZE ((1 << MYRI10GE_ALLOC_ORDER) * PAGE_SIZE)
98 #define MYRI10GE_MAX_FRAGS_PER_FRAME (MYRI10GE_MAX_ETHER_MTU/MYRI10GE_ALLOC_SIZE + 1)
100 struct myri10ge_rx_buffer_state
{
103 DECLARE_PCI_UNMAP_ADDR(bus
)
104 DECLARE_PCI_UNMAP_LEN(len
)
107 struct myri10ge_tx_buffer_state
{
110 DECLARE_PCI_UNMAP_ADDR(bus
)
111 DECLARE_PCI_UNMAP_LEN(len
)
114 struct myri10ge_cmd
{
120 struct myri10ge_rx_buf
{
121 struct mcp_kreq_ether_recv __iomem
*lanai
; /* lanai ptr for recv ring */
122 u8 __iomem
*wc_fifo
; /* w/c rx dma addr fifo address */
123 struct mcp_kreq_ether_recv
*shadow
; /* host shadow of recv ring */
124 struct myri10ge_rx_buffer_state
*info
;
131 int mask
; /* number of rx slots -1 */
135 struct myri10ge_tx_buf
{
136 struct mcp_kreq_ether_send __iomem
*lanai
; /* lanai ptr for sendq */
137 u8 __iomem
*wc_fifo
; /* w/c send fifo address */
138 struct mcp_kreq_ether_send
*req_list
; /* host shadow of sendq */
140 struct myri10ge_tx_buffer_state
*info
;
141 int mask
; /* number of transmit slots -1 */
142 int boundary
; /* boundary transmits cannot cross */
143 int req ____cacheline_aligned
; /* transmit slots submitted */
144 int pkt_start
; /* packets started */
145 int done ____cacheline_aligned
; /* transmit slots completed */
146 int pkt_done
; /* packets completed */
149 struct myri10ge_rx_done
{
150 struct mcp_slot
*entry
;
156 struct myri10ge_priv
{
157 int running
; /* running? */
158 int csum_flag
; /* rx_csums? */
159 struct myri10ge_tx_buf tx
; /* transmit ring */
160 struct myri10ge_rx_buf rx_small
;
161 struct myri10ge_rx_buf rx_big
;
162 struct myri10ge_rx_done rx_done
;
165 struct net_device
*dev
;
166 struct napi_struct napi
;
167 struct net_device_stats stats
;
170 unsigned long board_span
;
171 unsigned long iomem_base
;
172 __be32 __iomem
*irq_claim
;
173 __be32 __iomem
*irq_deassert
;
174 char *mac_addr_string
;
175 struct mcp_cmd_response
*cmd
;
177 struct mcp_irq_data
*fw_stats
;
178 dma_addr_t fw_stats_bus
;
179 struct pci_dev
*pdev
;
182 unsigned int rdma_tags_available
;
184 __be32 __iomem
*intr_coal_delay_ptr
;
190 wait_queue_head_t down_wq
;
191 struct work_struct watchdog_work
;
192 struct timer_list watchdog_timer
;
193 int watchdog_tx_done
;
200 char eeprom_strings
[MYRI10GE_EEPROM_STRINGS_SIZE
];
201 char fw_version
[128];
205 int adopted_rx_filter_bug
;
206 u8 mac_addr
[6]; /* eeprom mac address */
207 unsigned long serial_number
;
208 int vendor_specific_offset
;
209 int fw_multicast_support
;
217 static char *myri10ge_fw_unaligned
= "myri10ge_ethp_z8e.dat";
218 static char *myri10ge_fw_aligned
= "myri10ge_eth_z8e.dat";
220 static char *myri10ge_fw_name
= NULL
;
221 module_param(myri10ge_fw_name
, charp
, S_IRUGO
| S_IWUSR
);
222 MODULE_PARM_DESC(myri10ge_fw_name
, "Firmware image name\n");
224 static int myri10ge_ecrc_enable
= 1;
225 module_param(myri10ge_ecrc_enable
, int, S_IRUGO
);
226 MODULE_PARM_DESC(myri10ge_ecrc_enable
, "Enable Extended CRC on PCI-E\n");
228 static int myri10ge_max_intr_slots
= 1024;
229 module_param(myri10ge_max_intr_slots
, int, S_IRUGO
);
230 MODULE_PARM_DESC(myri10ge_max_intr_slots
, "Interrupt queue slots\n");
232 static int myri10ge_small_bytes
= -1; /* -1 == auto */
233 module_param(myri10ge_small_bytes
, int, S_IRUGO
| S_IWUSR
);
234 MODULE_PARM_DESC(myri10ge_small_bytes
, "Threshold of small packets\n");
236 static int myri10ge_msi
= 1; /* enable msi by default */
237 module_param(myri10ge_msi
, int, S_IRUGO
| S_IWUSR
);
238 MODULE_PARM_DESC(myri10ge_msi
, "Enable Message Signalled Interrupts\n");
240 static int myri10ge_intr_coal_delay
= 75;
241 module_param(myri10ge_intr_coal_delay
, int, S_IRUGO
);
242 MODULE_PARM_DESC(myri10ge_intr_coal_delay
, "Interrupt coalescing delay\n");
244 static int myri10ge_flow_control
= 1;
245 module_param(myri10ge_flow_control
, int, S_IRUGO
);
246 MODULE_PARM_DESC(myri10ge_flow_control
, "Pause parameter\n");
248 static int myri10ge_deassert_wait
= 1;
249 module_param(myri10ge_deassert_wait
, int, S_IRUGO
| S_IWUSR
);
250 MODULE_PARM_DESC(myri10ge_deassert_wait
,
251 "Wait when deasserting legacy interrupts\n");
253 static int myri10ge_force_firmware
= 0;
254 module_param(myri10ge_force_firmware
, int, S_IRUGO
);
255 MODULE_PARM_DESC(myri10ge_force_firmware
,
256 "Force firmware to assume aligned completions\n");
258 static int myri10ge_initial_mtu
= MYRI10GE_MAX_ETHER_MTU
- ETH_HLEN
;
259 module_param(myri10ge_initial_mtu
, int, S_IRUGO
);
260 MODULE_PARM_DESC(myri10ge_initial_mtu
, "Initial MTU\n");
262 static int myri10ge_napi_weight
= 64;
263 module_param(myri10ge_napi_weight
, int, S_IRUGO
);
264 MODULE_PARM_DESC(myri10ge_napi_weight
, "Set NAPI weight\n");
266 static int myri10ge_watchdog_timeout
= 1;
267 module_param(myri10ge_watchdog_timeout
, int, S_IRUGO
);
268 MODULE_PARM_DESC(myri10ge_watchdog_timeout
, "Set watchdog timeout\n");
270 static int myri10ge_max_irq_loops
= 1048576;
271 module_param(myri10ge_max_irq_loops
, int, S_IRUGO
);
272 MODULE_PARM_DESC(myri10ge_max_irq_loops
,
273 "Set stuck legacy IRQ detection threshold\n");
275 #define MYRI10GE_MSG_DEFAULT NETIF_MSG_LINK
277 static int myri10ge_debug
= -1; /* defaults above */
278 module_param(myri10ge_debug
, int, 0);
279 MODULE_PARM_DESC(myri10ge_debug
, "Debug level (0=none,...,16=all)");
281 static int myri10ge_fill_thresh
= 256;
282 module_param(myri10ge_fill_thresh
, int, S_IRUGO
| S_IWUSR
);
283 MODULE_PARM_DESC(myri10ge_fill_thresh
, "Number of empty rx slots allowed\n");
285 static int myri10ge_reset_recover
= 1;
287 static int myri10ge_wcfifo
= 0;
288 module_param(myri10ge_wcfifo
, int, S_IRUGO
);
289 MODULE_PARM_DESC(myri10ge_wcfifo
, "Enable WC Fifo when WC is enabled\n");
291 #define MYRI10GE_FW_OFFSET 1024*1024
292 #define MYRI10GE_HIGHPART_TO_U32(X) \
293 (sizeof (X) == 8) ? ((u32)((u64)(X) >> 32)) : (0)
294 #define MYRI10GE_LOWPART_TO_U32(X) ((u32)(X))
296 #define myri10ge_pio_copy(to,from,size) __iowrite64_copy(to,from,size/8)
298 static void myri10ge_set_multicast_list(struct net_device
*dev
);
300 static inline void put_be32(__be32 val
, __be32 __iomem
* p
)
302 __raw_writel((__force __u32
) val
, (__force
void __iomem
*)p
);
306 myri10ge_send_cmd(struct myri10ge_priv
*mgp
, u32 cmd
,
307 struct myri10ge_cmd
*data
, int atomic
)
310 char buf_bytes
[sizeof(*buf
) + 8];
311 struct mcp_cmd_response
*response
= mgp
->cmd
;
312 char __iomem
*cmd_addr
= mgp
->sram
+ MXGEFW_ETH_CMD
;
313 u32 dma_low
, dma_high
, result
, value
;
316 /* ensure buf is aligned to 8 bytes */
317 buf
= (struct mcp_cmd
*)ALIGN((unsigned long)buf_bytes
, 8);
319 buf
->data0
= htonl(data
->data0
);
320 buf
->data1
= htonl(data
->data1
);
321 buf
->data2
= htonl(data
->data2
);
322 buf
->cmd
= htonl(cmd
);
323 dma_low
= MYRI10GE_LOWPART_TO_U32(mgp
->cmd_bus
);
324 dma_high
= MYRI10GE_HIGHPART_TO_U32(mgp
->cmd_bus
);
326 buf
->response_addr
.low
= htonl(dma_low
);
327 buf
->response_addr
.high
= htonl(dma_high
);
328 response
->result
= htonl(MYRI10GE_NO_RESPONSE_RESULT
);
330 myri10ge_pio_copy(cmd_addr
, buf
, sizeof(*buf
));
332 /* wait up to 15ms. Longest command is the DMA benchmark,
333 * which is capped at 5ms, but runs from a timeout handler
334 * that runs every 7.8ms. So a 15ms timeout leaves us with
338 /* if atomic is set, do not sleep,
339 * and try to get the completion quickly
340 * (1ms will be enough for those commands) */
341 for (sleep_total
= 0;
343 && response
->result
== htonl(MYRI10GE_NO_RESPONSE_RESULT
);
347 /* use msleep for most command */
348 for (sleep_total
= 0;
350 && response
->result
== htonl(MYRI10GE_NO_RESPONSE_RESULT
);
355 result
= ntohl(response
->result
);
356 value
= ntohl(response
->data
);
357 if (result
!= MYRI10GE_NO_RESPONSE_RESULT
) {
361 } else if (result
== MXGEFW_CMD_UNKNOWN
) {
363 } else if (result
== MXGEFW_CMD_ERROR_UNALIGNED
) {
366 dev_err(&mgp
->pdev
->dev
,
367 "command %d failed, result = %d\n",
373 dev_err(&mgp
->pdev
->dev
, "command %d timed out, result = %d\n",
379 * The eeprom strings on the lanaiX have the format
382 * PT:ddd mmm xx xx:xx:xx xx\0
383 * PV:ddd mmm xx xx:xx:xx xx\0
385 static int myri10ge_read_mac_addr(struct myri10ge_priv
*mgp
)
390 ptr
= mgp
->eeprom_strings
;
391 limit
= mgp
->eeprom_strings
+ MYRI10GE_EEPROM_STRINGS_SIZE
;
393 while (*ptr
!= '\0' && ptr
< limit
) {
394 if (memcmp(ptr
, "MAC=", 4) == 0) {
396 mgp
->mac_addr_string
= ptr
;
397 for (i
= 0; i
< 6; i
++) {
398 if ((ptr
+ 2) > limit
)
401 simple_strtoul(ptr
, &ptr
, 16);
405 if (memcmp((const void *)ptr
, "SN=", 3) == 0) {
407 mgp
->serial_number
= simple_strtoul(ptr
, &ptr
, 10);
409 while (ptr
< limit
&& *ptr
++) ;
415 dev_err(&mgp
->pdev
->dev
, "failed to parse eeprom_strings\n");
420 * Enable or disable periodic RDMAs from the host to make certain
421 * chipsets resend dropped PCIe messages
424 static void myri10ge_dummy_rdma(struct myri10ge_priv
*mgp
, int enable
)
426 char __iomem
*submit
;
428 u32 dma_low
, dma_high
;
431 /* clear confirmation addr */
435 /* send a rdma command to the PCIe engine, and wait for the
436 * response in the confirmation address. The firmware should
437 * write a -1 there to indicate it is alive and well
439 dma_low
= MYRI10GE_LOWPART_TO_U32(mgp
->cmd_bus
);
440 dma_high
= MYRI10GE_HIGHPART_TO_U32(mgp
->cmd_bus
);
442 buf
[0] = htonl(dma_high
); /* confirm addr MSW */
443 buf
[1] = htonl(dma_low
); /* confirm addr LSW */
444 buf
[2] = MYRI10GE_NO_CONFIRM_DATA
; /* confirm data */
445 buf
[3] = htonl(dma_high
); /* dummy addr MSW */
446 buf
[4] = htonl(dma_low
); /* dummy addr LSW */
447 buf
[5] = htonl(enable
); /* enable? */
449 submit
= mgp
->sram
+ MXGEFW_BOOT_DUMMY_RDMA
;
451 myri10ge_pio_copy(submit
, &buf
, sizeof(buf
));
452 for (i
= 0; mgp
->cmd
->data
!= MYRI10GE_NO_CONFIRM_DATA
&& i
< 20; i
++)
454 if (mgp
->cmd
->data
!= MYRI10GE_NO_CONFIRM_DATA
)
455 dev_err(&mgp
->pdev
->dev
, "dummy rdma %s failed\n",
456 (enable
? "enable" : "disable"));
460 myri10ge_validate_firmware(struct myri10ge_priv
*mgp
,
461 struct mcp_gen_header
*hdr
)
463 struct device
*dev
= &mgp
->pdev
->dev
;
465 /* check firmware type */
466 if (ntohl(hdr
->mcp_type
) != MCP_TYPE_ETH
) {
467 dev_err(dev
, "Bad firmware type: 0x%x\n", ntohl(hdr
->mcp_type
));
471 /* save firmware version for ethtool */
472 strncpy(mgp
->fw_version
, hdr
->version
, sizeof(mgp
->fw_version
));
474 sscanf(mgp
->fw_version
, "%d.%d.%d", &mgp
->fw_ver_major
,
475 &mgp
->fw_ver_minor
, &mgp
->fw_ver_tiny
);
477 if (!(mgp
->fw_ver_major
== MXGEFW_VERSION_MAJOR
478 && mgp
->fw_ver_minor
== MXGEFW_VERSION_MINOR
)) {
479 dev_err(dev
, "Found firmware version %s\n", mgp
->fw_version
);
480 dev_err(dev
, "Driver needs %d.%d\n", MXGEFW_VERSION_MAJOR
,
481 MXGEFW_VERSION_MINOR
);
487 static int myri10ge_load_hotplug_firmware(struct myri10ge_priv
*mgp
, u32
* size
)
489 unsigned crc
, reread_crc
;
490 const struct firmware
*fw
;
491 struct device
*dev
= &mgp
->pdev
->dev
;
492 struct mcp_gen_header
*hdr
;
497 if ((status
= request_firmware(&fw
, mgp
->fw_name
, dev
)) < 0) {
498 dev_err(dev
, "Unable to load %s firmware image via hotplug\n",
501 goto abort_with_nothing
;
506 if (fw
->size
>= mgp
->sram_size
- MYRI10GE_FW_OFFSET
||
507 fw
->size
< MCP_HEADER_PTR_OFFSET
+ 4) {
508 dev_err(dev
, "Firmware size invalid:%d\n", (int)fw
->size
);
514 hdr_offset
= ntohl(*(__be32
*) (fw
->data
+ MCP_HEADER_PTR_OFFSET
));
515 if ((hdr_offset
& 3) || hdr_offset
+ sizeof(*hdr
) > fw
->size
) {
516 dev_err(dev
, "Bad firmware file\n");
520 hdr
= (void *)(fw
->data
+ hdr_offset
);
522 status
= myri10ge_validate_firmware(mgp
, hdr
);
526 crc
= crc32(~0, fw
->data
, fw
->size
);
527 for (i
= 0; i
< fw
->size
; i
+= 256) {
528 myri10ge_pio_copy(mgp
->sram
+ MYRI10GE_FW_OFFSET
+ i
,
530 min(256U, (unsigned)(fw
->size
- i
)));
534 /* corruption checking is good for parity recovery and buggy chipset */
535 memcpy_fromio(fw
->data
, mgp
->sram
+ MYRI10GE_FW_OFFSET
, fw
->size
);
536 reread_crc
= crc32(~0, fw
->data
, fw
->size
);
537 if (crc
!= reread_crc
) {
538 dev_err(dev
, "CRC failed(fw-len=%u), got 0x%x (expect 0x%x)\n",
539 (unsigned)fw
->size
, reread_crc
, crc
);
543 *size
= (u32
) fw
->size
;
546 release_firmware(fw
);
552 static int myri10ge_adopt_running_firmware(struct myri10ge_priv
*mgp
)
554 struct mcp_gen_header
*hdr
;
555 struct device
*dev
= &mgp
->pdev
->dev
;
556 const size_t bytes
= sizeof(struct mcp_gen_header
);
560 /* find running firmware header */
561 hdr_offset
= ntohl(__raw_readl(mgp
->sram
+ MCP_HEADER_PTR_OFFSET
));
563 if ((hdr_offset
& 3) || hdr_offset
+ sizeof(*hdr
) > mgp
->sram_size
) {
564 dev_err(dev
, "Running firmware has bad header offset (%d)\n",
569 /* copy header of running firmware from SRAM to host memory to
570 * validate firmware */
571 hdr
= kmalloc(bytes
, GFP_KERNEL
);
573 dev_err(dev
, "could not malloc firmware hdr\n");
576 memcpy_fromio(hdr
, mgp
->sram
+ hdr_offset
, bytes
);
577 status
= myri10ge_validate_firmware(mgp
, hdr
);
580 /* check to see if adopted firmware has bug where adopting
581 * it will cause broadcasts to be filtered unless the NIC
582 * is kept in ALLMULTI mode */
583 if (mgp
->fw_ver_major
== 1 && mgp
->fw_ver_minor
== 4 &&
584 mgp
->fw_ver_tiny
>= 4 && mgp
->fw_ver_tiny
<= 11) {
585 mgp
->adopted_rx_filter_bug
= 1;
586 dev_warn(dev
, "Adopting fw %d.%d.%d: "
587 "working around rx filter bug\n",
588 mgp
->fw_ver_major
, mgp
->fw_ver_minor
,
594 static int myri10ge_load_firmware(struct myri10ge_priv
*mgp
)
596 char __iomem
*submit
;
598 u32 dma_low
, dma_high
, size
;
602 status
= myri10ge_load_hotplug_firmware(mgp
, &size
);
604 dev_warn(&mgp
->pdev
->dev
, "hotplug firmware loading failed\n");
606 /* Do not attempt to adopt firmware if there
611 status
= myri10ge_adopt_running_firmware(mgp
);
613 dev_err(&mgp
->pdev
->dev
,
614 "failed to adopt running firmware\n");
617 dev_info(&mgp
->pdev
->dev
,
618 "Successfully adopted running firmware\n");
619 if (mgp
->tx
.boundary
== 4096) {
620 dev_warn(&mgp
->pdev
->dev
,
621 "Using firmware currently running on NIC"
623 dev_warn(&mgp
->pdev
->dev
,
624 "performance consider loading optimized "
626 dev_warn(&mgp
->pdev
->dev
, "via hotplug\n");
629 mgp
->fw_name
= "adopted";
630 mgp
->tx
.boundary
= 2048;
634 /* clear confirmation addr */
638 /* send a reload command to the bootstrap MCP, and wait for the
639 * response in the confirmation address. The firmware should
640 * write a -1 there to indicate it is alive and well
642 dma_low
= MYRI10GE_LOWPART_TO_U32(mgp
->cmd_bus
);
643 dma_high
= MYRI10GE_HIGHPART_TO_U32(mgp
->cmd_bus
);
645 buf
[0] = htonl(dma_high
); /* confirm addr MSW */
646 buf
[1] = htonl(dma_low
); /* confirm addr LSW */
647 buf
[2] = MYRI10GE_NO_CONFIRM_DATA
; /* confirm data */
649 /* FIX: All newest firmware should un-protect the bottom of
650 * the sram before handoff. However, the very first interfaces
651 * do not. Therefore the handoff copy must skip the first 8 bytes
653 buf
[3] = htonl(MYRI10GE_FW_OFFSET
+ 8); /* where the code starts */
654 buf
[4] = htonl(size
- 8); /* length of code */
655 buf
[5] = htonl(8); /* where to copy to */
656 buf
[6] = htonl(0); /* where to jump to */
658 submit
= mgp
->sram
+ MXGEFW_BOOT_HANDOFF
;
660 myri10ge_pio_copy(submit
, &buf
, sizeof(buf
));
665 while (mgp
->cmd
->data
!= MYRI10GE_NO_CONFIRM_DATA
&& i
< 20) {
669 if (mgp
->cmd
->data
!= MYRI10GE_NO_CONFIRM_DATA
) {
670 dev_err(&mgp
->pdev
->dev
, "handoff failed\n");
673 dev_info(&mgp
->pdev
->dev
, "handoff confirmed\n");
674 myri10ge_dummy_rdma(mgp
, 1);
679 static int myri10ge_update_mac_address(struct myri10ge_priv
*mgp
, u8
* addr
)
681 struct myri10ge_cmd cmd
;
684 cmd
.data0
= ((addr
[0] << 24) | (addr
[1] << 16)
685 | (addr
[2] << 8) | addr
[3]);
687 cmd
.data1
= ((addr
[4] << 8) | (addr
[5]));
689 status
= myri10ge_send_cmd(mgp
, MXGEFW_SET_MAC_ADDRESS
, &cmd
, 0);
693 static int myri10ge_change_pause(struct myri10ge_priv
*mgp
, int pause
)
695 struct myri10ge_cmd cmd
;
698 ctl
= pause
? MXGEFW_ENABLE_FLOW_CONTROL
: MXGEFW_DISABLE_FLOW_CONTROL
;
699 status
= myri10ge_send_cmd(mgp
, ctl
, &cmd
, 0);
703 "myri10ge: %s: Failed to set flow control mode\n",
712 myri10ge_change_promisc(struct myri10ge_priv
*mgp
, int promisc
, int atomic
)
714 struct myri10ge_cmd cmd
;
717 ctl
= promisc
? MXGEFW_ENABLE_PROMISC
: MXGEFW_DISABLE_PROMISC
;
718 status
= myri10ge_send_cmd(mgp
, ctl
, &cmd
, atomic
);
720 printk(KERN_ERR
"myri10ge: %s: Failed to set promisc mode\n",
724 static int myri10ge_dma_test(struct myri10ge_priv
*mgp
, int test_type
)
726 struct myri10ge_cmd cmd
;
729 struct page
*dmatest_page
;
730 dma_addr_t dmatest_bus
;
733 dmatest_page
= alloc_page(GFP_KERNEL
);
736 dmatest_bus
= pci_map_page(mgp
->pdev
, dmatest_page
, 0, PAGE_SIZE
,
739 /* Run a small DMA test.
740 * The magic multipliers to the length tell the firmware
741 * to do DMA read, write, or read+write tests. The
742 * results are returned in cmd.data0. The upper 16
743 * bits or the return is the number of transfers completed.
744 * The lower 16 bits is the time in 0.5us ticks that the
745 * transfers took to complete.
748 len
= mgp
->tx
.boundary
;
750 cmd
.data0
= MYRI10GE_LOWPART_TO_U32(dmatest_bus
);
751 cmd
.data1
= MYRI10GE_HIGHPART_TO_U32(dmatest_bus
);
752 cmd
.data2
= len
* 0x10000;
753 status
= myri10ge_send_cmd(mgp
, test_type
, &cmd
, 0);
758 mgp
->read_dma
= ((cmd
.data0
>> 16) * len
* 2) / (cmd
.data0
& 0xffff);
759 cmd
.data0
= MYRI10GE_LOWPART_TO_U32(dmatest_bus
);
760 cmd
.data1
= MYRI10GE_HIGHPART_TO_U32(dmatest_bus
);
761 cmd
.data2
= len
* 0x1;
762 status
= myri10ge_send_cmd(mgp
, test_type
, &cmd
, 0);
767 mgp
->write_dma
= ((cmd
.data0
>> 16) * len
* 2) / (cmd
.data0
& 0xffff);
769 cmd
.data0
= MYRI10GE_LOWPART_TO_U32(dmatest_bus
);
770 cmd
.data1
= MYRI10GE_HIGHPART_TO_U32(dmatest_bus
);
771 cmd
.data2
= len
* 0x10001;
772 status
= myri10ge_send_cmd(mgp
, test_type
, &cmd
, 0);
777 mgp
->read_write_dma
= ((cmd
.data0
>> 16) * len
* 2 * 2) /
778 (cmd
.data0
& 0xffff);
781 pci_unmap_page(mgp
->pdev
, dmatest_bus
, PAGE_SIZE
, DMA_BIDIRECTIONAL
);
782 put_page(dmatest_page
);
784 if (status
!= 0 && test_type
!= MXGEFW_CMD_UNALIGNED_TEST
)
785 dev_warn(&mgp
->pdev
->dev
, "DMA %s benchmark failed: %d\n",
791 static int myri10ge_reset(struct myri10ge_priv
*mgp
)
793 struct myri10ge_cmd cmd
;
797 /* try to send a reset command to the card to see if it
799 memset(&cmd
, 0, sizeof(cmd
));
800 status
= myri10ge_send_cmd(mgp
, MXGEFW_CMD_RESET
, &cmd
, 0);
802 dev_err(&mgp
->pdev
->dev
, "failed reset\n");
806 (void)myri10ge_dma_test(mgp
, MXGEFW_DMA_TEST
);
808 /* Now exchange information about interrupts */
810 bytes
= myri10ge_max_intr_slots
* sizeof(*mgp
->rx_done
.entry
);
811 memset(mgp
->rx_done
.entry
, 0, bytes
);
812 cmd
.data0
= (u32
) bytes
;
813 status
= myri10ge_send_cmd(mgp
, MXGEFW_CMD_SET_INTRQ_SIZE
, &cmd
, 0);
814 cmd
.data0
= MYRI10GE_LOWPART_TO_U32(mgp
->rx_done
.bus
);
815 cmd
.data1
= MYRI10GE_HIGHPART_TO_U32(mgp
->rx_done
.bus
);
816 status
|= myri10ge_send_cmd(mgp
, MXGEFW_CMD_SET_INTRQ_DMA
, &cmd
, 0);
819 myri10ge_send_cmd(mgp
, MXGEFW_CMD_GET_IRQ_ACK_OFFSET
, &cmd
, 0);
820 mgp
->irq_claim
= (__iomem __be32
*) (mgp
->sram
+ cmd
.data0
);
821 status
|= myri10ge_send_cmd(mgp
, MXGEFW_CMD_GET_IRQ_DEASSERT_OFFSET
,
823 mgp
->irq_deassert
= (__iomem __be32
*) (mgp
->sram
+ cmd
.data0
);
825 status
|= myri10ge_send_cmd
826 (mgp
, MXGEFW_CMD_GET_INTR_COAL_DELAY_OFFSET
, &cmd
, 0);
827 mgp
->intr_coal_delay_ptr
= (__iomem __be32
*) (mgp
->sram
+ cmd
.data0
);
829 dev_err(&mgp
->pdev
->dev
, "failed set interrupt parameters\n");
832 put_be32(htonl(mgp
->intr_coal_delay
), mgp
->intr_coal_delay_ptr
);
834 memset(mgp
->rx_done
.entry
, 0, bytes
);
836 /* reset mcp/driver shared state back to 0 */
839 mgp
->tx
.pkt_start
= 0;
840 mgp
->tx
.pkt_done
= 0;
842 mgp
->rx_small
.cnt
= 0;
843 mgp
->rx_done
.idx
= 0;
844 mgp
->rx_done
.cnt
= 0;
845 mgp
->link_changes
= 0;
846 status
= myri10ge_update_mac_address(mgp
, mgp
->dev
->dev_addr
);
847 myri10ge_change_pause(mgp
, mgp
->pause
);
848 myri10ge_set_multicast_list(mgp
->dev
);
853 myri10ge_submit_8rx(struct mcp_kreq_ether_recv __iomem
* dst
,
854 struct mcp_kreq_ether_recv
*src
)
859 src
->addr_low
= htonl(DMA_32BIT_MASK
);
860 myri10ge_pio_copy(dst
, src
, 4 * sizeof(*src
));
862 myri10ge_pio_copy(dst
+ 4, src
+ 4, 4 * sizeof(*src
));
865 put_be32(low
, &dst
->addr_low
);
869 static inline void myri10ge_vlan_ip_csum(struct sk_buff
*skb
, __wsum hw_csum
)
871 struct vlan_hdr
*vh
= (struct vlan_hdr
*)(skb
->data
);
873 if ((skb
->protocol
== htons(ETH_P_8021Q
)) &&
874 (vh
->h_vlan_encapsulated_proto
== htons(ETH_P_IP
) ||
875 vh
->h_vlan_encapsulated_proto
== htons(ETH_P_IPV6
))) {
877 skb
->ip_summed
= CHECKSUM_COMPLETE
;
882 myri10ge_rx_skb_build(struct sk_buff
*skb
, u8
* va
,
883 struct skb_frag_struct
*rx_frags
, int len
, int hlen
)
885 struct skb_frag_struct
*skb_frags
;
887 skb
->len
= skb
->data_len
= len
;
888 skb
->truesize
= len
+ sizeof(struct sk_buff
);
889 /* attach the page(s) */
891 skb_frags
= skb_shinfo(skb
)->frags
;
893 memcpy(skb_frags
, rx_frags
, sizeof(*skb_frags
));
894 len
-= rx_frags
->size
;
897 skb_shinfo(skb
)->nr_frags
++;
900 /* pskb_may_pull is not available in irq context, but
901 * skb_pull() (for ether_pad and eth_type_trans()) requires
902 * the beginning of the packet in skb_headlen(), move it
904 skb_copy_to_linear_data(skb
, va
, hlen
);
905 skb_shinfo(skb
)->frags
[0].page_offset
+= hlen
;
906 skb_shinfo(skb
)->frags
[0].size
-= hlen
;
907 skb
->data_len
-= hlen
;
909 skb_pull(skb
, MXGEFW_PAD
);
913 myri10ge_alloc_rx_pages(struct myri10ge_priv
*mgp
, struct myri10ge_rx_buf
*rx
,
914 int bytes
, int watchdog
)
919 if (unlikely(rx
->watchdog_needed
&& !watchdog
))
922 /* try to refill entire ring */
923 while (rx
->fill_cnt
!= (rx
->cnt
+ rx
->mask
+ 1)) {
924 idx
= rx
->fill_cnt
& rx
->mask
;
925 if (rx
->page_offset
+ bytes
<= MYRI10GE_ALLOC_SIZE
) {
926 /* we can use part of previous page */
929 /* we need a new page */
931 alloc_pages(GFP_ATOMIC
| __GFP_COMP
,
932 MYRI10GE_ALLOC_ORDER
);
933 if (unlikely(page
== NULL
)) {
934 if (rx
->fill_cnt
- rx
->cnt
< 16)
935 rx
->watchdog_needed
= 1;
940 rx
->bus
= pci_map_page(mgp
->pdev
, page
, 0,
944 rx
->info
[idx
].page
= rx
->page
;
945 rx
->info
[idx
].page_offset
= rx
->page_offset
;
946 /* note that this is the address of the start of the
948 pci_unmap_addr_set(&rx
->info
[idx
], bus
, rx
->bus
);
949 rx
->shadow
[idx
].addr_low
=
950 htonl(MYRI10GE_LOWPART_TO_U32(rx
->bus
) + rx
->page_offset
);
951 rx
->shadow
[idx
].addr_high
=
952 htonl(MYRI10GE_HIGHPART_TO_U32(rx
->bus
));
954 /* start next packet on a cacheline boundary */
955 rx
->page_offset
+= SKB_DATA_ALIGN(bytes
);
957 #if MYRI10GE_ALLOC_SIZE > 4096
958 /* don't cross a 4KB boundary */
959 if ((rx
->page_offset
>> 12) !=
960 ((rx
->page_offset
+ bytes
- 1) >> 12))
961 rx
->page_offset
= (rx
->page_offset
+ 4096) & ~4095;
965 /* copy 8 descriptors to the firmware at a time */
966 if ((idx
& 7) == 7) {
967 if (rx
->wc_fifo
== NULL
)
968 myri10ge_submit_8rx(&rx
->lanai
[idx
- 7],
969 &rx
->shadow
[idx
- 7]);
972 myri10ge_pio_copy(rx
->wc_fifo
,
973 &rx
->shadow
[idx
- 7], 64);
980 myri10ge_unmap_rx_page(struct pci_dev
*pdev
,
981 struct myri10ge_rx_buffer_state
*info
, int bytes
)
983 /* unmap the recvd page if we're the only or last user of it */
984 if (bytes
>= MYRI10GE_ALLOC_SIZE
/ 2 ||
985 (info
->page_offset
+ 2 * bytes
) > MYRI10GE_ALLOC_SIZE
) {
986 pci_unmap_page(pdev
, (pci_unmap_addr(info
, bus
)
987 & ~(MYRI10GE_ALLOC_SIZE
- 1)),
988 MYRI10GE_ALLOC_SIZE
, PCI_DMA_FROMDEVICE
);
992 #define MYRI10GE_HLEN 64 /* The number of bytes to copy from a
993 * page into an skb */
996 myri10ge_rx_done(struct myri10ge_priv
*mgp
, struct myri10ge_rx_buf
*rx
,
997 int bytes
, int len
, __wsum csum
)
1000 struct skb_frag_struct rx_frags
[MYRI10GE_MAX_FRAGS_PER_FRAME
];
1001 int i
, idx
, hlen
, remainder
;
1002 struct pci_dev
*pdev
= mgp
->pdev
;
1003 struct net_device
*dev
= mgp
->dev
;
1007 idx
= rx
->cnt
& rx
->mask
;
1008 va
= page_address(rx
->info
[idx
].page
) + rx
->info
[idx
].page_offset
;
1010 /* Fill skb_frag_struct(s) with data from our receive */
1011 for (i
= 0, remainder
= len
; remainder
> 0; i
++) {
1012 myri10ge_unmap_rx_page(pdev
, &rx
->info
[idx
], bytes
);
1013 rx_frags
[i
].page
= rx
->info
[idx
].page
;
1014 rx_frags
[i
].page_offset
= rx
->info
[idx
].page_offset
;
1015 if (remainder
< MYRI10GE_ALLOC_SIZE
)
1016 rx_frags
[i
].size
= remainder
;
1018 rx_frags
[i
].size
= MYRI10GE_ALLOC_SIZE
;
1020 idx
= rx
->cnt
& rx
->mask
;
1021 remainder
-= MYRI10GE_ALLOC_SIZE
;
1024 hlen
= MYRI10GE_HLEN
> len
? len
: MYRI10GE_HLEN
;
1026 /* allocate an skb to attach the page(s) to. */
1028 skb
= netdev_alloc_skb(dev
, MYRI10GE_HLEN
+ 16);
1029 if (unlikely(skb
== NULL
)) {
1030 mgp
->stats
.rx_dropped
++;
1033 put_page(rx_frags
[i
].page
);
1038 /* Attach the pages to the skb, and trim off any padding */
1039 myri10ge_rx_skb_build(skb
, va
, rx_frags
, len
, hlen
);
1040 if (skb_shinfo(skb
)->frags
[0].size
<= 0) {
1041 put_page(skb_shinfo(skb
)->frags
[0].page
);
1042 skb_shinfo(skb
)->nr_frags
= 0;
1044 skb
->protocol
= eth_type_trans(skb
, dev
);
1046 if (mgp
->csum_flag
) {
1047 if ((skb
->protocol
== htons(ETH_P_IP
)) ||
1048 (skb
->protocol
== htons(ETH_P_IPV6
))) {
1050 skb
->ip_summed
= CHECKSUM_COMPLETE
;
1052 myri10ge_vlan_ip_csum(skb
, csum
);
1054 netif_receive_skb(skb
);
1055 dev
->last_rx
= jiffies
;
1059 static inline void myri10ge_tx_done(struct myri10ge_priv
*mgp
, int mcp_index
)
1061 struct pci_dev
*pdev
= mgp
->pdev
;
1062 struct myri10ge_tx_buf
*tx
= &mgp
->tx
;
1063 struct sk_buff
*skb
;
1066 while (tx
->pkt_done
!= mcp_index
) {
1067 idx
= tx
->done
& tx
->mask
;
1068 skb
= tx
->info
[idx
].skb
;
1071 tx
->info
[idx
].skb
= NULL
;
1072 if (tx
->info
[idx
].last
) {
1074 tx
->info
[idx
].last
= 0;
1077 len
= pci_unmap_len(&tx
->info
[idx
], len
);
1078 pci_unmap_len_set(&tx
->info
[idx
], len
, 0);
1080 mgp
->stats
.tx_bytes
+= skb
->len
;
1081 mgp
->stats
.tx_packets
++;
1082 dev_kfree_skb_irq(skb
);
1084 pci_unmap_single(pdev
,
1085 pci_unmap_addr(&tx
->info
[idx
],
1090 pci_unmap_page(pdev
,
1091 pci_unmap_addr(&tx
->info
[idx
],
1096 /* start the queue if we've stopped it */
1097 if (netif_queue_stopped(mgp
->dev
)
1098 && tx
->req
- tx
->done
< (tx
->mask
>> 1)) {
1100 netif_wake_queue(mgp
->dev
);
1104 static inline int myri10ge_clean_rx_done(struct myri10ge_priv
*mgp
, int budget
)
1106 struct myri10ge_rx_done
*rx_done
= &mgp
->rx_done
;
1107 unsigned long rx_bytes
= 0;
1108 unsigned long rx_packets
= 0;
1109 unsigned long rx_ok
;
1111 int idx
= rx_done
->idx
;
1112 int cnt
= rx_done
->cnt
;
1117 while (rx_done
->entry
[idx
].length
!= 0 && work_done
++ < budget
) {
1118 length
= ntohs(rx_done
->entry
[idx
].length
);
1119 rx_done
->entry
[idx
].length
= 0;
1120 checksum
= csum_unfold(rx_done
->entry
[idx
].checksum
);
1121 if (length
<= mgp
->small_bytes
)
1122 rx_ok
= myri10ge_rx_done(mgp
, &mgp
->rx_small
,
1126 rx_ok
= myri10ge_rx_done(mgp
, &mgp
->rx_big
,
1129 rx_packets
+= rx_ok
;
1130 rx_bytes
+= rx_ok
* (unsigned long)length
;
1132 idx
= cnt
& (myri10ge_max_intr_slots
- 1);
1136 mgp
->stats
.rx_packets
+= rx_packets
;
1137 mgp
->stats
.rx_bytes
+= rx_bytes
;
1139 /* restock receive rings if needed */
1140 if (mgp
->rx_small
.fill_cnt
- mgp
->rx_small
.cnt
< myri10ge_fill_thresh
)
1141 myri10ge_alloc_rx_pages(mgp
, &mgp
->rx_small
,
1142 mgp
->small_bytes
+ MXGEFW_PAD
, 0);
1143 if (mgp
->rx_big
.fill_cnt
- mgp
->rx_big
.cnt
< myri10ge_fill_thresh
)
1144 myri10ge_alloc_rx_pages(mgp
, &mgp
->rx_big
, mgp
->big_bytes
, 0);
1149 static inline void myri10ge_check_statblock(struct myri10ge_priv
*mgp
)
1151 struct mcp_irq_data
*stats
= mgp
->fw_stats
;
1153 if (unlikely(stats
->stats_updated
)) {
1154 unsigned link_up
= ntohl(stats
->link_up
);
1155 if (mgp
->link_state
!= link_up
) {
1156 mgp
->link_state
= link_up
;
1158 if (mgp
->link_state
== MXGEFW_LINK_UP
) {
1159 if (netif_msg_link(mgp
))
1161 "myri10ge: %s: link up\n",
1163 netif_carrier_on(mgp
->dev
);
1164 mgp
->link_changes
++;
1166 if (netif_msg_link(mgp
))
1168 "myri10ge: %s: link %s\n",
1170 (link_up
== MXGEFW_LINK_MYRINET
?
1171 "mismatch (Myrinet detected)" :
1173 netif_carrier_off(mgp
->dev
);
1174 mgp
->link_changes
++;
1177 if (mgp
->rdma_tags_available
!=
1178 ntohl(mgp
->fw_stats
->rdma_tags_available
)) {
1179 mgp
->rdma_tags_available
=
1180 ntohl(mgp
->fw_stats
->rdma_tags_available
);
1181 printk(KERN_WARNING
"myri10ge: %s: RDMA timed out! "
1182 "%d tags left\n", mgp
->dev
->name
,
1183 mgp
->rdma_tags_available
);
1185 mgp
->down_cnt
+= stats
->link_down
;
1186 if (stats
->link_down
)
1187 wake_up(&mgp
->down_wq
);
1191 static int myri10ge_poll(struct napi_struct
*napi
, int budget
)
1193 struct myri10ge_priv
*mgp
= container_of(napi
, struct myri10ge_priv
, napi
);
1194 struct net_device
*netdev
= mgp
->dev
;
1195 struct myri10ge_rx_done
*rx_done
= &mgp
->rx_done
;
1198 /* process as many rx events as NAPI will allow */
1199 work_done
= myri10ge_clean_rx_done(mgp
, budget
);
1201 if (rx_done
->entry
[rx_done
->idx
].length
== 0 || !netif_running(netdev
)) {
1202 netif_rx_complete(netdev
, napi
);
1203 put_be32(htonl(3), mgp
->irq_claim
);
1208 static irqreturn_t
myri10ge_intr(int irq
, void *arg
)
1210 struct myri10ge_priv
*mgp
= arg
;
1211 struct mcp_irq_data
*stats
= mgp
->fw_stats
;
1212 struct myri10ge_tx_buf
*tx
= &mgp
->tx
;
1213 u32 send_done_count
;
1216 /* make sure it is our IRQ, and that the DMA has finished */
1217 if (unlikely(!stats
->valid
))
1220 /* low bit indicates receives are present, so schedule
1221 * napi poll handler */
1222 if (stats
->valid
& 1)
1223 netif_rx_schedule(mgp
->dev
, &mgp
->napi
);
1225 if (!mgp
->msi_enabled
) {
1226 put_be32(0, mgp
->irq_deassert
);
1227 if (!myri10ge_deassert_wait
)
1233 /* Wait for IRQ line to go low, if using INTx */
1237 /* check for transmit completes and receives */
1238 send_done_count
= ntohl(stats
->send_done_count
);
1239 if (send_done_count
!= tx
->pkt_done
)
1240 myri10ge_tx_done(mgp
, (int)send_done_count
);
1241 if (unlikely(i
> myri10ge_max_irq_loops
)) {
1242 printk(KERN_WARNING
"myri10ge: %s: irq stuck?\n",
1245 schedule_work(&mgp
->watchdog_work
);
1247 if (likely(stats
->valid
== 0))
1253 myri10ge_check_statblock(mgp
);
1255 put_be32(htonl(3), mgp
->irq_claim
+ 1);
1256 return (IRQ_HANDLED
);
1260 myri10ge_get_settings(struct net_device
*netdev
, struct ethtool_cmd
*cmd
)
1262 cmd
->autoneg
= AUTONEG_DISABLE
;
1263 cmd
->speed
= SPEED_10000
;
1264 cmd
->duplex
= DUPLEX_FULL
;
1269 myri10ge_get_drvinfo(struct net_device
*netdev
, struct ethtool_drvinfo
*info
)
1271 struct myri10ge_priv
*mgp
= netdev_priv(netdev
);
1273 strlcpy(info
->driver
, "myri10ge", sizeof(info
->driver
));
1274 strlcpy(info
->version
, MYRI10GE_VERSION_STR
, sizeof(info
->version
));
1275 strlcpy(info
->fw_version
, mgp
->fw_version
, sizeof(info
->fw_version
));
1276 strlcpy(info
->bus_info
, pci_name(mgp
->pdev
), sizeof(info
->bus_info
));
1280 myri10ge_get_coalesce(struct net_device
*netdev
, struct ethtool_coalesce
*coal
)
1282 struct myri10ge_priv
*mgp
= netdev_priv(netdev
);
1283 coal
->rx_coalesce_usecs
= mgp
->intr_coal_delay
;
1288 myri10ge_set_coalesce(struct net_device
*netdev
, struct ethtool_coalesce
*coal
)
1290 struct myri10ge_priv
*mgp
= netdev_priv(netdev
);
1292 mgp
->intr_coal_delay
= coal
->rx_coalesce_usecs
;
1293 put_be32(htonl(mgp
->intr_coal_delay
), mgp
->intr_coal_delay_ptr
);
1298 myri10ge_get_pauseparam(struct net_device
*netdev
,
1299 struct ethtool_pauseparam
*pause
)
1301 struct myri10ge_priv
*mgp
= netdev_priv(netdev
);
1304 pause
->rx_pause
= mgp
->pause
;
1305 pause
->tx_pause
= mgp
->pause
;
1309 myri10ge_set_pauseparam(struct net_device
*netdev
,
1310 struct ethtool_pauseparam
*pause
)
1312 struct myri10ge_priv
*mgp
= netdev_priv(netdev
);
1314 if (pause
->tx_pause
!= mgp
->pause
)
1315 return myri10ge_change_pause(mgp
, pause
->tx_pause
);
1316 if (pause
->rx_pause
!= mgp
->pause
)
1317 return myri10ge_change_pause(mgp
, pause
->tx_pause
);
1318 if (pause
->autoneg
!= 0)
1324 myri10ge_get_ringparam(struct net_device
*netdev
,
1325 struct ethtool_ringparam
*ring
)
1327 struct myri10ge_priv
*mgp
= netdev_priv(netdev
);
1329 ring
->rx_mini_max_pending
= mgp
->rx_small
.mask
+ 1;
1330 ring
->rx_max_pending
= mgp
->rx_big
.mask
+ 1;
1331 ring
->rx_jumbo_max_pending
= 0;
1332 ring
->tx_max_pending
= mgp
->rx_small
.mask
+ 1;
1333 ring
->rx_mini_pending
= ring
->rx_mini_max_pending
;
1334 ring
->rx_pending
= ring
->rx_max_pending
;
1335 ring
->rx_jumbo_pending
= ring
->rx_jumbo_max_pending
;
1336 ring
->tx_pending
= ring
->tx_max_pending
;
1339 static u32
myri10ge_get_rx_csum(struct net_device
*netdev
)
1341 struct myri10ge_priv
*mgp
= netdev_priv(netdev
);
1348 static int myri10ge_set_rx_csum(struct net_device
*netdev
, u32 csum_enabled
)
1350 struct myri10ge_priv
*mgp
= netdev_priv(netdev
);
1352 mgp
->csum_flag
= MXGEFW_FLAGS_CKSUM
;
1358 static const char myri10ge_gstrings_stats
[][ETH_GSTRING_LEN
] = {
1359 "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
1360 "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
1361 "rx_length_errors", "rx_over_errors", "rx_crc_errors",
1362 "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
1363 "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
1364 "tx_heartbeat_errors", "tx_window_errors",
1365 /* device-specific stats */
1366 "tx_boundary", "WC", "irq", "MSI",
1367 "read_dma_bw_MBs", "write_dma_bw_MBs", "read_write_dma_bw_MBs",
1368 "serial_number", "tx_pkt_start", "tx_pkt_done",
1369 "tx_req", "tx_done", "rx_small_cnt", "rx_big_cnt",
1370 "wake_queue", "stop_queue", "watchdog_resets", "tx_linearized",
1371 "link_changes", "link_up", "dropped_link_overflow",
1372 "dropped_link_error_or_filtered",
1373 "dropped_pause", "dropped_bad_phy", "dropped_bad_crc32",
1374 "dropped_unicast_filtered", "dropped_multicast_filtered",
1375 "dropped_runt", "dropped_overrun", "dropped_no_small_buffer",
1376 "dropped_no_big_buffer"
1379 #define MYRI10GE_NET_STATS_LEN 21
1380 #define MYRI10GE_STATS_LEN sizeof(myri10ge_gstrings_stats) / ETH_GSTRING_LEN
1383 myri10ge_get_strings(struct net_device
*netdev
, u32 stringset
, u8
* data
)
1385 switch (stringset
) {
1387 memcpy(data
, *myri10ge_gstrings_stats
,
1388 sizeof(myri10ge_gstrings_stats
));
1393 static int myri10ge_get_stats_count(struct net_device
*netdev
)
1395 return MYRI10GE_STATS_LEN
;
1399 myri10ge_get_ethtool_stats(struct net_device
*netdev
,
1400 struct ethtool_stats
*stats
, u64
* data
)
1402 struct myri10ge_priv
*mgp
= netdev_priv(netdev
);
1405 for (i
= 0; i
< MYRI10GE_NET_STATS_LEN
; i
++)
1406 data
[i
] = ((unsigned long *)&mgp
->stats
)[i
];
1408 data
[i
++] = (unsigned int)mgp
->tx
.boundary
;
1409 data
[i
++] = (unsigned int)mgp
->wc_enabled
;
1410 data
[i
++] = (unsigned int)mgp
->pdev
->irq
;
1411 data
[i
++] = (unsigned int)mgp
->msi_enabled
;
1412 data
[i
++] = (unsigned int)mgp
->read_dma
;
1413 data
[i
++] = (unsigned int)mgp
->write_dma
;
1414 data
[i
++] = (unsigned int)mgp
->read_write_dma
;
1415 data
[i
++] = (unsigned int)mgp
->serial_number
;
1416 data
[i
++] = (unsigned int)mgp
->tx
.pkt_start
;
1417 data
[i
++] = (unsigned int)mgp
->tx
.pkt_done
;
1418 data
[i
++] = (unsigned int)mgp
->tx
.req
;
1419 data
[i
++] = (unsigned int)mgp
->tx
.done
;
1420 data
[i
++] = (unsigned int)mgp
->rx_small
.cnt
;
1421 data
[i
++] = (unsigned int)mgp
->rx_big
.cnt
;
1422 data
[i
++] = (unsigned int)mgp
->wake_queue
;
1423 data
[i
++] = (unsigned int)mgp
->stop_queue
;
1424 data
[i
++] = (unsigned int)mgp
->watchdog_resets
;
1425 data
[i
++] = (unsigned int)mgp
->tx_linearized
;
1426 data
[i
++] = (unsigned int)mgp
->link_changes
;
1427 data
[i
++] = (unsigned int)ntohl(mgp
->fw_stats
->link_up
);
1428 data
[i
++] = (unsigned int)ntohl(mgp
->fw_stats
->dropped_link_overflow
);
1430 (unsigned int)ntohl(mgp
->fw_stats
->dropped_link_error_or_filtered
);
1431 data
[i
++] = (unsigned int)ntohl(mgp
->fw_stats
->dropped_pause
);
1432 data
[i
++] = (unsigned int)ntohl(mgp
->fw_stats
->dropped_bad_phy
);
1433 data
[i
++] = (unsigned int)ntohl(mgp
->fw_stats
->dropped_bad_crc32
);
1435 (unsigned int)ntohl(mgp
->fw_stats
->dropped_unicast_filtered
);
1437 (unsigned int)ntohl(mgp
->fw_stats
->dropped_multicast_filtered
);
1438 data
[i
++] = (unsigned int)ntohl(mgp
->fw_stats
->dropped_runt
);
1439 data
[i
++] = (unsigned int)ntohl(mgp
->fw_stats
->dropped_overrun
);
1440 data
[i
++] = (unsigned int)ntohl(mgp
->fw_stats
->dropped_no_small_buffer
);
1441 data
[i
++] = (unsigned int)ntohl(mgp
->fw_stats
->dropped_no_big_buffer
);
1444 static void myri10ge_set_msglevel(struct net_device
*netdev
, u32 value
)
1446 struct myri10ge_priv
*mgp
= netdev_priv(netdev
);
1447 mgp
->msg_enable
= value
;
1450 static u32
myri10ge_get_msglevel(struct net_device
*netdev
)
1452 struct myri10ge_priv
*mgp
= netdev_priv(netdev
);
1453 return mgp
->msg_enable
;
1456 static const struct ethtool_ops myri10ge_ethtool_ops
= {
1457 .get_settings
= myri10ge_get_settings
,
1458 .get_drvinfo
= myri10ge_get_drvinfo
,
1459 .get_coalesce
= myri10ge_get_coalesce
,
1460 .set_coalesce
= myri10ge_set_coalesce
,
1461 .get_pauseparam
= myri10ge_get_pauseparam
,
1462 .set_pauseparam
= myri10ge_set_pauseparam
,
1463 .get_ringparam
= myri10ge_get_ringparam
,
1464 .get_rx_csum
= myri10ge_get_rx_csum
,
1465 .set_rx_csum
= myri10ge_set_rx_csum
,
1466 .get_tx_csum
= ethtool_op_get_tx_csum
,
1467 .set_tx_csum
= ethtool_op_set_tx_hw_csum
,
1468 .get_sg
= ethtool_op_get_sg
,
1469 .set_sg
= ethtool_op_set_sg
,
1470 .get_tso
= ethtool_op_get_tso
,
1471 .set_tso
= ethtool_op_set_tso
,
1472 .get_link
= ethtool_op_get_link
,
1473 .get_strings
= myri10ge_get_strings
,
1474 .get_stats_count
= myri10ge_get_stats_count
,
1475 .get_ethtool_stats
= myri10ge_get_ethtool_stats
,
1476 .set_msglevel
= myri10ge_set_msglevel
,
1477 .get_msglevel
= myri10ge_get_msglevel
1480 static int myri10ge_allocate_rings(struct net_device
*dev
)
1482 struct myri10ge_priv
*mgp
;
1483 struct myri10ge_cmd cmd
;
1484 int tx_ring_size
, rx_ring_size
;
1485 int tx_ring_entries
, rx_ring_entries
;
1489 mgp
= netdev_priv(dev
);
1491 /* get ring sizes */
1493 status
= myri10ge_send_cmd(mgp
, MXGEFW_CMD_GET_SEND_RING_SIZE
, &cmd
, 0);
1494 tx_ring_size
= cmd
.data0
;
1495 status
|= myri10ge_send_cmd(mgp
, MXGEFW_CMD_GET_RX_RING_SIZE
, &cmd
, 0);
1498 rx_ring_size
= cmd
.data0
;
1500 tx_ring_entries
= tx_ring_size
/ sizeof(struct mcp_kreq_ether_send
);
1501 rx_ring_entries
= rx_ring_size
/ sizeof(struct mcp_dma_addr
);
1502 mgp
->tx
.mask
= tx_ring_entries
- 1;
1503 mgp
->rx_small
.mask
= mgp
->rx_big
.mask
= rx_ring_entries
- 1;
1507 /* allocate the host shadow rings */
1509 bytes
= 8 + (MYRI10GE_MAX_SEND_DESC_TSO
+ 4)
1510 * sizeof(*mgp
->tx
.req_list
);
1511 mgp
->tx
.req_bytes
= kzalloc(bytes
, GFP_KERNEL
);
1512 if (mgp
->tx
.req_bytes
== NULL
)
1513 goto abort_with_nothing
;
1515 /* ensure req_list entries are aligned to 8 bytes */
1516 mgp
->tx
.req_list
= (struct mcp_kreq_ether_send
*)
1517 ALIGN((unsigned long)mgp
->tx
.req_bytes
, 8);
1519 bytes
= rx_ring_entries
* sizeof(*mgp
->rx_small
.shadow
);
1520 mgp
->rx_small
.shadow
= kzalloc(bytes
, GFP_KERNEL
);
1521 if (mgp
->rx_small
.shadow
== NULL
)
1522 goto abort_with_tx_req_bytes
;
1524 bytes
= rx_ring_entries
* sizeof(*mgp
->rx_big
.shadow
);
1525 mgp
->rx_big
.shadow
= kzalloc(bytes
, GFP_KERNEL
);
1526 if (mgp
->rx_big
.shadow
== NULL
)
1527 goto abort_with_rx_small_shadow
;
1529 /* allocate the host info rings */
1531 bytes
= tx_ring_entries
* sizeof(*mgp
->tx
.info
);
1532 mgp
->tx
.info
= kzalloc(bytes
, GFP_KERNEL
);
1533 if (mgp
->tx
.info
== NULL
)
1534 goto abort_with_rx_big_shadow
;
1536 bytes
= rx_ring_entries
* sizeof(*mgp
->rx_small
.info
);
1537 mgp
->rx_small
.info
= kzalloc(bytes
, GFP_KERNEL
);
1538 if (mgp
->rx_small
.info
== NULL
)
1539 goto abort_with_tx_info
;
1541 bytes
= rx_ring_entries
* sizeof(*mgp
->rx_big
.info
);
1542 mgp
->rx_big
.info
= kzalloc(bytes
, GFP_KERNEL
);
1543 if (mgp
->rx_big
.info
== NULL
)
1544 goto abort_with_rx_small_info
;
1546 /* Fill the receive rings */
1547 mgp
->rx_big
.cnt
= 0;
1548 mgp
->rx_small
.cnt
= 0;
1549 mgp
->rx_big
.fill_cnt
= 0;
1550 mgp
->rx_small
.fill_cnt
= 0;
1551 mgp
->rx_small
.page_offset
= MYRI10GE_ALLOC_SIZE
;
1552 mgp
->rx_big
.page_offset
= MYRI10GE_ALLOC_SIZE
;
1553 mgp
->rx_small
.watchdog_needed
= 0;
1554 mgp
->rx_big
.watchdog_needed
= 0;
1555 myri10ge_alloc_rx_pages(mgp
, &mgp
->rx_small
,
1556 mgp
->small_bytes
+ MXGEFW_PAD
, 0);
1558 if (mgp
->rx_small
.fill_cnt
< mgp
->rx_small
.mask
+ 1) {
1559 printk(KERN_ERR
"myri10ge: %s: alloced only %d small bufs\n",
1560 dev
->name
, mgp
->rx_small
.fill_cnt
);
1561 goto abort_with_rx_small_ring
;
1564 myri10ge_alloc_rx_pages(mgp
, &mgp
->rx_big
, mgp
->big_bytes
, 0);
1565 if (mgp
->rx_big
.fill_cnt
< mgp
->rx_big
.mask
+ 1) {
1566 printk(KERN_ERR
"myri10ge: %s: alloced only %d big bufs\n",
1567 dev
->name
, mgp
->rx_big
.fill_cnt
);
1568 goto abort_with_rx_big_ring
;
1573 abort_with_rx_big_ring
:
1574 for (i
= mgp
->rx_big
.cnt
; i
< mgp
->rx_big
.fill_cnt
; i
++) {
1575 int idx
= i
& mgp
->rx_big
.mask
;
1576 myri10ge_unmap_rx_page(mgp
->pdev
, &mgp
->rx_big
.info
[idx
],
1578 put_page(mgp
->rx_big
.info
[idx
].page
);
1581 abort_with_rx_small_ring
:
1582 for (i
= mgp
->rx_small
.cnt
; i
< mgp
->rx_small
.fill_cnt
; i
++) {
1583 int idx
= i
& mgp
->rx_small
.mask
;
1584 myri10ge_unmap_rx_page(mgp
->pdev
, &mgp
->rx_small
.info
[idx
],
1585 mgp
->small_bytes
+ MXGEFW_PAD
);
1586 put_page(mgp
->rx_small
.info
[idx
].page
);
1589 kfree(mgp
->rx_big
.info
);
1591 abort_with_rx_small_info
:
1592 kfree(mgp
->rx_small
.info
);
1595 kfree(mgp
->tx
.info
);
1597 abort_with_rx_big_shadow
:
1598 kfree(mgp
->rx_big
.shadow
);
1600 abort_with_rx_small_shadow
:
1601 kfree(mgp
->rx_small
.shadow
);
1603 abort_with_tx_req_bytes
:
1604 kfree(mgp
->tx
.req_bytes
);
1605 mgp
->tx
.req_bytes
= NULL
;
1606 mgp
->tx
.req_list
= NULL
;
1612 static void myri10ge_free_rings(struct net_device
*dev
)
1614 struct myri10ge_priv
*mgp
;
1615 struct sk_buff
*skb
;
1616 struct myri10ge_tx_buf
*tx
;
1619 mgp
= netdev_priv(dev
);
1621 for (i
= mgp
->rx_big
.cnt
; i
< mgp
->rx_big
.fill_cnt
; i
++) {
1622 idx
= i
& mgp
->rx_big
.mask
;
1623 if (i
== mgp
->rx_big
.fill_cnt
- 1)
1624 mgp
->rx_big
.info
[idx
].page_offset
= MYRI10GE_ALLOC_SIZE
;
1625 myri10ge_unmap_rx_page(mgp
->pdev
, &mgp
->rx_big
.info
[idx
],
1627 put_page(mgp
->rx_big
.info
[idx
].page
);
1630 for (i
= mgp
->rx_small
.cnt
; i
< mgp
->rx_small
.fill_cnt
; i
++) {
1631 idx
= i
& mgp
->rx_small
.mask
;
1632 if (i
== mgp
->rx_small
.fill_cnt
- 1)
1633 mgp
->rx_small
.info
[idx
].page_offset
=
1634 MYRI10GE_ALLOC_SIZE
;
1635 myri10ge_unmap_rx_page(mgp
->pdev
, &mgp
->rx_small
.info
[idx
],
1636 mgp
->small_bytes
+ MXGEFW_PAD
);
1637 put_page(mgp
->rx_small
.info
[idx
].page
);
1640 while (tx
->done
!= tx
->req
) {
1641 idx
= tx
->done
& tx
->mask
;
1642 skb
= tx
->info
[idx
].skb
;
1645 tx
->info
[idx
].skb
= NULL
;
1647 len
= pci_unmap_len(&tx
->info
[idx
], len
);
1648 pci_unmap_len_set(&tx
->info
[idx
], len
, 0);
1650 mgp
->stats
.tx_dropped
++;
1651 dev_kfree_skb_any(skb
);
1653 pci_unmap_single(mgp
->pdev
,
1654 pci_unmap_addr(&tx
->info
[idx
],
1659 pci_unmap_page(mgp
->pdev
,
1660 pci_unmap_addr(&tx
->info
[idx
],
1665 kfree(mgp
->rx_big
.info
);
1667 kfree(mgp
->rx_small
.info
);
1669 kfree(mgp
->tx
.info
);
1671 kfree(mgp
->rx_big
.shadow
);
1673 kfree(mgp
->rx_small
.shadow
);
1675 kfree(mgp
->tx
.req_bytes
);
1676 mgp
->tx
.req_bytes
= NULL
;
1677 mgp
->tx
.req_list
= NULL
;
1680 static int myri10ge_request_irq(struct myri10ge_priv
*mgp
)
1682 struct pci_dev
*pdev
= mgp
->pdev
;
1686 status
= pci_enable_msi(pdev
);
1689 "Error %d setting up MSI; falling back to xPIC\n",
1692 mgp
->msi_enabled
= 1;
1694 mgp
->msi_enabled
= 0;
1696 status
= request_irq(pdev
->irq
, myri10ge_intr
, IRQF_SHARED
,
1697 mgp
->dev
->name
, mgp
);
1699 dev_err(&pdev
->dev
, "failed to allocate IRQ\n");
1700 if (mgp
->msi_enabled
)
1701 pci_disable_msi(pdev
);
1706 static void myri10ge_free_irq(struct myri10ge_priv
*mgp
)
1708 struct pci_dev
*pdev
= mgp
->pdev
;
1710 free_irq(pdev
->irq
, mgp
);
1711 if (mgp
->msi_enabled
)
1712 pci_disable_msi(pdev
);
1715 static int myri10ge_open(struct net_device
*dev
)
1717 struct myri10ge_priv
*mgp
;
1718 struct myri10ge_cmd cmd
;
1719 int status
, big_pow2
;
1721 mgp
= netdev_priv(dev
);
1723 if (mgp
->running
!= MYRI10GE_ETH_STOPPED
)
1726 mgp
->running
= MYRI10GE_ETH_STARTING
;
1727 status
= myri10ge_reset(mgp
);
1729 printk(KERN_ERR
"myri10ge: %s: failed reset\n", dev
->name
);
1730 goto abort_with_nothing
;
1733 status
= myri10ge_request_irq(mgp
);
1735 goto abort_with_nothing
;
1737 /* decide what small buffer size to use. For good TCP rx
1738 * performance, it is important to not receive 1514 byte
1739 * frames into jumbo buffers, as it confuses the socket buffer
1740 * accounting code, leading to drops and erratic performance.
1743 if (dev
->mtu
<= ETH_DATA_LEN
)
1744 /* enough for a TCP header */
1745 mgp
->small_bytes
= (128 > SMP_CACHE_BYTES
)
1746 ? (128 - MXGEFW_PAD
)
1747 : (SMP_CACHE_BYTES
- MXGEFW_PAD
);
1749 /* enough for a vlan encapsulated ETH_DATA_LEN frame */
1750 mgp
->small_bytes
= VLAN_ETH_FRAME_LEN
;
1752 /* Override the small buffer size? */
1753 if (myri10ge_small_bytes
> 0)
1754 mgp
->small_bytes
= myri10ge_small_bytes
;
1756 /* get the lanai pointers to the send and receive rings */
1758 status
|= myri10ge_send_cmd(mgp
, MXGEFW_CMD_GET_SEND_OFFSET
, &cmd
, 0);
1760 (struct mcp_kreq_ether_send __iomem
*)(mgp
->sram
+ cmd
.data0
);
1763 myri10ge_send_cmd(mgp
, MXGEFW_CMD_GET_SMALL_RX_OFFSET
, &cmd
, 0);
1764 mgp
->rx_small
.lanai
=
1765 (struct mcp_kreq_ether_recv __iomem
*)(mgp
->sram
+ cmd
.data0
);
1767 status
|= myri10ge_send_cmd(mgp
, MXGEFW_CMD_GET_BIG_RX_OFFSET
, &cmd
, 0);
1769 (struct mcp_kreq_ether_recv __iomem
*)(mgp
->sram
+ cmd
.data0
);
1773 "myri10ge: %s: failed to get ring sizes or locations\n",
1775 mgp
->running
= MYRI10GE_ETH_STOPPED
;
1776 goto abort_with_irq
;
1779 if (myri10ge_wcfifo
&& mgp
->wc_enabled
) {
1780 mgp
->tx
.wc_fifo
= (u8 __iomem
*) mgp
->sram
+ MXGEFW_ETH_SEND_4
;
1781 mgp
->rx_small
.wc_fifo
=
1782 (u8 __iomem
*) mgp
->sram
+ MXGEFW_ETH_RECV_SMALL
;
1783 mgp
->rx_big
.wc_fifo
=
1784 (u8 __iomem
*) mgp
->sram
+ MXGEFW_ETH_RECV_BIG
;
1786 mgp
->tx
.wc_fifo
= NULL
;
1787 mgp
->rx_small
.wc_fifo
= NULL
;
1788 mgp
->rx_big
.wc_fifo
= NULL
;
1791 /* Firmware needs the big buff size as a power of 2. Lie and
1792 * tell him the buffer is larger, because we only use 1
1793 * buffer/pkt, and the mtu will prevent overruns.
1795 big_pow2
= dev
->mtu
+ ETH_HLEN
+ VLAN_HLEN
+ MXGEFW_PAD
;
1796 if (big_pow2
< MYRI10GE_ALLOC_SIZE
/ 2) {
1797 while (!is_power_of_2(big_pow2
))
1799 mgp
->big_bytes
= dev
->mtu
+ ETH_HLEN
+ VLAN_HLEN
+ MXGEFW_PAD
;
1801 big_pow2
= MYRI10GE_ALLOC_SIZE
;
1802 mgp
->big_bytes
= big_pow2
;
1805 status
= myri10ge_allocate_rings(dev
);
1807 goto abort_with_irq
;
1809 /* now give firmware buffers sizes, and MTU */
1810 cmd
.data0
= dev
->mtu
+ ETH_HLEN
+ VLAN_HLEN
;
1811 status
= myri10ge_send_cmd(mgp
, MXGEFW_CMD_SET_MTU
, &cmd
, 0);
1812 cmd
.data0
= mgp
->small_bytes
;
1814 myri10ge_send_cmd(mgp
, MXGEFW_CMD_SET_SMALL_BUFFER_SIZE
, &cmd
, 0);
1815 cmd
.data0
= big_pow2
;
1817 myri10ge_send_cmd(mgp
, MXGEFW_CMD_SET_BIG_BUFFER_SIZE
, &cmd
, 0);
1819 printk(KERN_ERR
"myri10ge: %s: Couldn't set buffer sizes\n",
1821 goto abort_with_rings
;
1824 cmd
.data0
= MYRI10GE_LOWPART_TO_U32(mgp
->fw_stats_bus
);
1825 cmd
.data1
= MYRI10GE_HIGHPART_TO_U32(mgp
->fw_stats_bus
);
1826 cmd
.data2
= sizeof(struct mcp_irq_data
);
1827 status
= myri10ge_send_cmd(mgp
, MXGEFW_CMD_SET_STATS_DMA_V2
, &cmd
, 0);
1828 if (status
== -ENOSYS
) {
1829 dma_addr_t bus
= mgp
->fw_stats_bus
;
1830 bus
+= offsetof(struct mcp_irq_data
, send_done_count
);
1831 cmd
.data0
= MYRI10GE_LOWPART_TO_U32(bus
);
1832 cmd
.data1
= MYRI10GE_HIGHPART_TO_U32(bus
);
1833 status
= myri10ge_send_cmd(mgp
,
1834 MXGEFW_CMD_SET_STATS_DMA_OBSOLETE
,
1836 /* Firmware cannot support multicast without STATS_DMA_V2 */
1837 mgp
->fw_multicast_support
= 0;
1839 mgp
->fw_multicast_support
= 1;
1842 printk(KERN_ERR
"myri10ge: %s: Couldn't set stats DMA\n",
1844 goto abort_with_rings
;
1847 mgp
->link_state
= htonl(~0U);
1848 mgp
->rdma_tags_available
= 15;
1850 napi_enable(&mgp
->napi
); /* must happen prior to any irq */
1852 status
= myri10ge_send_cmd(mgp
, MXGEFW_CMD_ETHERNET_UP
, &cmd
, 0);
1854 printk(KERN_ERR
"myri10ge: %s: Couldn't bring up link\n",
1856 goto abort_with_rings
;
1859 mgp
->wake_queue
= 0;
1860 mgp
->stop_queue
= 0;
1861 mgp
->running
= MYRI10GE_ETH_RUNNING
;
1862 mgp
->watchdog_timer
.expires
= jiffies
+ myri10ge_watchdog_timeout
* HZ
;
1863 add_timer(&mgp
->watchdog_timer
);
1864 netif_wake_queue(dev
);
1868 myri10ge_free_rings(dev
);
1871 myri10ge_free_irq(mgp
);
1874 mgp
->running
= MYRI10GE_ETH_STOPPED
;
1878 static int myri10ge_close(struct net_device
*dev
)
1880 struct myri10ge_priv
*mgp
;
1881 struct myri10ge_cmd cmd
;
1882 int status
, old_down_cnt
;
1884 mgp
= netdev_priv(dev
);
1886 if (mgp
->running
!= MYRI10GE_ETH_RUNNING
)
1889 if (mgp
->tx
.req_bytes
== NULL
)
1892 del_timer_sync(&mgp
->watchdog_timer
);
1893 mgp
->running
= MYRI10GE_ETH_STOPPING
;
1894 napi_disable(&mgp
->napi
);
1895 netif_carrier_off(dev
);
1896 netif_stop_queue(dev
);
1897 old_down_cnt
= mgp
->down_cnt
;
1899 status
= myri10ge_send_cmd(mgp
, MXGEFW_CMD_ETHERNET_DOWN
, &cmd
, 0);
1901 printk(KERN_ERR
"myri10ge: %s: Couldn't bring down link\n",
1904 wait_event_timeout(mgp
->down_wq
, old_down_cnt
!= mgp
->down_cnt
, HZ
);
1905 if (old_down_cnt
== mgp
->down_cnt
)
1906 printk(KERN_ERR
"myri10ge: %s never got down irq\n", dev
->name
);
1908 netif_tx_disable(dev
);
1909 myri10ge_free_irq(mgp
);
1910 myri10ge_free_rings(dev
);
1912 mgp
->running
= MYRI10GE_ETH_STOPPED
;
1916 /* copy an array of struct mcp_kreq_ether_send's to the mcp. Copy
1917 * backwards one at a time and handle ring wraps */
1920 myri10ge_submit_req_backwards(struct myri10ge_tx_buf
*tx
,
1921 struct mcp_kreq_ether_send
*src
, int cnt
)
1923 int idx
, starting_slot
;
1924 starting_slot
= tx
->req
;
1927 idx
= (starting_slot
+ cnt
) & tx
->mask
;
1928 myri10ge_pio_copy(&tx
->lanai
[idx
], &src
[cnt
], sizeof(*src
));
1934 * copy an array of struct mcp_kreq_ether_send's to the mcp. Copy
1935 * at most 32 bytes at a time, so as to avoid involving the software
1936 * pio handler in the nic. We re-write the first segment's flags
1937 * to mark them valid only after writing the entire chain.
1941 myri10ge_submit_req(struct myri10ge_tx_buf
*tx
, struct mcp_kreq_ether_send
*src
,
1945 struct mcp_kreq_ether_send __iomem
*dstp
, *dst
;
1946 struct mcp_kreq_ether_send
*srcp
;
1949 idx
= tx
->req
& tx
->mask
;
1951 last_flags
= src
->flags
;
1954 dst
= dstp
= &tx
->lanai
[idx
];
1957 if ((idx
+ cnt
) < tx
->mask
) {
1958 for (i
= 0; i
< (cnt
- 1); i
+= 2) {
1959 myri10ge_pio_copy(dstp
, srcp
, 2 * sizeof(*src
));
1960 mb(); /* force write every 32 bytes */
1965 /* submit all but the first request, and ensure
1966 * that it is submitted below */
1967 myri10ge_submit_req_backwards(tx
, src
, cnt
);
1971 /* submit the first request */
1972 myri10ge_pio_copy(dstp
, srcp
, sizeof(*src
));
1973 mb(); /* barrier before setting valid flag */
1976 /* re-write the last 32-bits with the valid flags */
1977 src
->flags
= last_flags
;
1978 put_be32(*((__be32
*) src
+ 3), (__be32 __iomem
*) dst
+ 3);
1984 myri10ge_submit_req_wc(struct myri10ge_tx_buf
*tx
,
1985 struct mcp_kreq_ether_send
*src
, int cnt
)
1990 myri10ge_pio_copy(tx
->wc_fifo
, src
, 64);
1996 /* pad it to 64 bytes. The src is 64 bytes bigger than it
1997 * needs to be so that we don't overrun it */
1998 myri10ge_pio_copy(tx
->wc_fifo
+ MXGEFW_ETH_SEND_OFFSET(cnt
),
2005 * Transmit a packet. We need to split the packet so that a single
2006 * segment does not cross myri10ge->tx.boundary, so this makes segment
2007 * counting tricky. So rather than try to count segments up front, we
2008 * just give up if there are too few segments to hold a reasonably
2009 * fragmented packet currently available. If we run
2010 * out of segments while preparing a packet for DMA, we just linearize
2014 static int myri10ge_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
2016 struct myri10ge_priv
*mgp
= netdev_priv(dev
);
2017 struct mcp_kreq_ether_send
*req
;
2018 struct myri10ge_tx_buf
*tx
= &mgp
->tx
;
2019 struct skb_frag_struct
*frag
;
2022 __be32 high_swapped
;
2024 int idx
, last_idx
, avail
, frag_cnt
, frag_idx
, count
, mss
, max_segments
;
2025 u16 pseudo_hdr_offset
, cksum_offset
;
2026 int cum_len
, seglen
, boundary
, rdma_count
;
2031 avail
= tx
->mask
- 1 - (tx
->req
- tx
->done
);
2034 max_segments
= MXGEFW_MAX_SEND_DESC
;
2036 if (skb_is_gso(skb
)) {
2037 mss
= skb_shinfo(skb
)->gso_size
;
2038 max_segments
= MYRI10GE_MAX_SEND_DESC_TSO
;
2041 if ((unlikely(avail
< max_segments
))) {
2042 /* we are out of transmit resources */
2044 netif_stop_queue(dev
);
2048 /* Setup checksum offloading, if needed */
2050 pseudo_hdr_offset
= 0;
2052 flags
= (MXGEFW_FLAGS_NO_TSO
| MXGEFW_FLAGS_FIRST
);
2053 if (likely(skb
->ip_summed
== CHECKSUM_PARTIAL
)) {
2054 cksum_offset
= skb_transport_offset(skb
);
2055 pseudo_hdr_offset
= cksum_offset
+ skb
->csum_offset
;
2056 /* If the headers are excessively large, then we must
2057 * fall back to a software checksum */
2058 if (unlikely(cksum_offset
> 255 || pseudo_hdr_offset
> 127)) {
2059 if (skb_checksum_help(skb
))
2062 pseudo_hdr_offset
= 0;
2064 odd_flag
= MXGEFW_FLAGS_ALIGN_ODD
;
2065 flags
|= MXGEFW_FLAGS_CKSUM
;
2071 if (mss
) { /* TSO */
2072 /* this removes any CKSUM flag from before */
2073 flags
= (MXGEFW_FLAGS_TSO_HDR
| MXGEFW_FLAGS_FIRST
);
2075 /* negative cum_len signifies to the
2076 * send loop that we are still in the
2077 * header portion of the TSO packet.
2078 * TSO header must be at most 134 bytes long */
2079 cum_len
= -(skb_transport_offset(skb
) + tcp_hdrlen(skb
));
2081 /* for TSO, pseudo_hdr_offset holds mss.
2082 * The firmware figures out where to put
2083 * the checksum by parsing the header. */
2084 pseudo_hdr_offset
= mss
;
2086 /* Mark small packets, and pad out tiny packets */
2087 if (skb
->len
<= MXGEFW_SEND_SMALL_SIZE
) {
2088 flags
|= MXGEFW_FLAGS_SMALL
;
2090 /* pad frames to at least ETH_ZLEN bytes */
2091 if (unlikely(skb
->len
< ETH_ZLEN
)) {
2092 if (skb_padto(skb
, ETH_ZLEN
)) {
2093 /* The packet is gone, so we must
2095 mgp
->stats
.tx_dropped
+= 1;
2098 /* adjust the len to account for the zero pad
2099 * so that the nic can know how long it is */
2100 skb
->len
= ETH_ZLEN
;
2104 /* map the skb for DMA */
2105 len
= skb
->len
- skb
->data_len
;
2106 idx
= tx
->req
& tx
->mask
;
2107 tx
->info
[idx
].skb
= skb
;
2108 bus
= pci_map_single(mgp
->pdev
, skb
->data
, len
, PCI_DMA_TODEVICE
);
2109 pci_unmap_addr_set(&tx
->info
[idx
], bus
, bus
);
2110 pci_unmap_len_set(&tx
->info
[idx
], len
, len
);
2112 frag_cnt
= skb_shinfo(skb
)->nr_frags
;
2117 /* "rdma_count" is the number of RDMAs belonging to the
2118 * current packet BEFORE the current send request. For
2119 * non-TSO packets, this is equal to "count".
2120 * For TSO packets, rdma_count needs to be reset
2121 * to 0 after a segment cut.
2123 * The rdma_count field of the send request is
2124 * the number of RDMAs of the packet starting at
2125 * that request. For TSO send requests with one ore more cuts
2126 * in the middle, this is the number of RDMAs starting
2127 * after the last cut in the request. All previous
2128 * segments before the last cut implicitly have 1 RDMA.
2130 * Since the number of RDMAs is not known beforehand,
2131 * it must be filled-in retroactively - after each
2132 * segmentation cut or at the end of the entire packet.
2136 /* Break the SKB or Fragment up into pieces which
2137 * do not cross mgp->tx.boundary */
2138 low
= MYRI10GE_LOWPART_TO_U32(bus
);
2139 high_swapped
= htonl(MYRI10GE_HIGHPART_TO_U32(bus
));
2144 if (unlikely(count
== max_segments
))
2145 goto abort_linearize
;
2147 boundary
= (low
+ tx
->boundary
) & ~(tx
->boundary
- 1);
2148 seglen
= boundary
- low
;
2151 flags_next
= flags
& ~MXGEFW_FLAGS_FIRST
;
2152 cum_len_next
= cum_len
+ seglen
;
2153 if (mss
) { /* TSO */
2154 (req
- rdma_count
)->rdma_count
= rdma_count
+ 1;
2156 if (likely(cum_len
>= 0)) { /* payload */
2157 int next_is_first
, chop
;
2159 chop
= (cum_len_next
> mss
);
2160 cum_len_next
= cum_len_next
% mss
;
2161 next_is_first
= (cum_len_next
== 0);
2162 flags
|= chop
* MXGEFW_FLAGS_TSO_CHOP
;
2163 flags_next
|= next_is_first
*
2165 rdma_count
|= -(chop
| next_is_first
);
2166 rdma_count
+= chop
& !next_is_first
;
2167 } else if (likely(cum_len_next
>= 0)) { /* header ends */
2173 small
= (mss
<= MXGEFW_SEND_SMALL_SIZE
);
2174 flags_next
= MXGEFW_FLAGS_TSO_PLD
|
2175 MXGEFW_FLAGS_FIRST
|
2176 (small
* MXGEFW_FLAGS_SMALL
);
2179 req
->addr_high
= high_swapped
;
2180 req
->addr_low
= htonl(low
);
2181 req
->pseudo_hdr_offset
= htons(pseudo_hdr_offset
);
2182 req
->pad
= 0; /* complete solid 16-byte block; does this matter? */
2183 req
->rdma_count
= 1;
2184 req
->length
= htons(seglen
);
2185 req
->cksum_offset
= cksum_offset
;
2186 req
->flags
= flags
| ((cum_len
& 1) * odd_flag
);
2190 cum_len
= cum_len_next
;
2195 if (unlikely(cksum_offset
> seglen
))
2196 cksum_offset
-= seglen
;
2200 if (frag_idx
== frag_cnt
)
2203 /* map next fragment for DMA */
2204 idx
= (count
+ tx
->req
) & tx
->mask
;
2205 frag
= &skb_shinfo(skb
)->frags
[frag_idx
];
2208 bus
= pci_map_page(mgp
->pdev
, frag
->page
, frag
->page_offset
,
2209 len
, PCI_DMA_TODEVICE
);
2210 pci_unmap_addr_set(&tx
->info
[idx
], bus
, bus
);
2211 pci_unmap_len_set(&tx
->info
[idx
], len
, len
);
2214 (req
- rdma_count
)->rdma_count
= rdma_count
;
2218 req
->flags
|= MXGEFW_FLAGS_TSO_LAST
;
2219 } while (!(req
->flags
& (MXGEFW_FLAGS_TSO_CHOP
|
2220 MXGEFW_FLAGS_FIRST
)));
2221 idx
= ((count
- 1) + tx
->req
) & tx
->mask
;
2222 tx
->info
[idx
].last
= 1;
2223 if (tx
->wc_fifo
== NULL
)
2224 myri10ge_submit_req(tx
, tx
->req_list
, count
);
2226 myri10ge_submit_req_wc(tx
, tx
->req_list
, count
);
2228 if ((avail
- count
) < MXGEFW_MAX_SEND_DESC
) {
2230 netif_stop_queue(dev
);
2232 dev
->trans_start
= jiffies
;
2236 /* Free any DMA resources we've alloced and clear out the skb
2237 * slot so as to not trip up assertions, and to avoid a
2238 * double-free if linearizing fails */
2240 last_idx
= (idx
+ 1) & tx
->mask
;
2241 idx
= tx
->req
& tx
->mask
;
2242 tx
->info
[idx
].skb
= NULL
;
2244 len
= pci_unmap_len(&tx
->info
[idx
], len
);
2246 if (tx
->info
[idx
].skb
!= NULL
)
2247 pci_unmap_single(mgp
->pdev
,
2248 pci_unmap_addr(&tx
->info
[idx
],
2252 pci_unmap_page(mgp
->pdev
,
2253 pci_unmap_addr(&tx
->info
[idx
],
2256 pci_unmap_len_set(&tx
->info
[idx
], len
, 0);
2257 tx
->info
[idx
].skb
= NULL
;
2259 idx
= (idx
+ 1) & tx
->mask
;
2260 } while (idx
!= last_idx
);
2261 if (skb_is_gso(skb
)) {
2263 "myri10ge: %s: TSO but wanted to linearize?!?!?\n",
2268 if (skb_linearize(skb
))
2271 mgp
->tx_linearized
++;
2275 dev_kfree_skb_any(skb
);
2276 mgp
->stats
.tx_dropped
+= 1;
2281 static struct net_device_stats
*myri10ge_get_stats(struct net_device
*dev
)
2283 struct myri10ge_priv
*mgp
= netdev_priv(dev
);
2287 static void myri10ge_set_multicast_list(struct net_device
*dev
)
2289 struct myri10ge_cmd cmd
;
2290 struct myri10ge_priv
*mgp
;
2291 struct dev_mc_list
*mc_list
;
2292 __be32 data
[2] = { 0, 0 };
2295 mgp
= netdev_priv(dev
);
2296 /* can be called from atomic contexts,
2297 * pass 1 to force atomicity in myri10ge_send_cmd() */
2298 myri10ge_change_promisc(mgp
, dev
->flags
& IFF_PROMISC
, 1);
2300 /* This firmware is known to not support multicast */
2301 if (!mgp
->fw_multicast_support
)
2304 /* Disable multicast filtering */
2306 err
= myri10ge_send_cmd(mgp
, MXGEFW_ENABLE_ALLMULTI
, &cmd
, 1);
2308 printk(KERN_ERR
"myri10ge: %s: Failed MXGEFW_ENABLE_ALLMULTI,"
2309 " error status: %d\n", dev
->name
, err
);
2313 if ((dev
->flags
& IFF_ALLMULTI
) || mgp
->adopted_rx_filter_bug
) {
2314 /* request to disable multicast filtering, so quit here */
2318 /* Flush the filters */
2320 err
= myri10ge_send_cmd(mgp
, MXGEFW_LEAVE_ALL_MULTICAST_GROUPS
,
2324 "myri10ge: %s: Failed MXGEFW_LEAVE_ALL_MULTICAST_GROUPS"
2325 ", error status: %d\n", dev
->name
, err
);
2329 /* Walk the multicast list, and add each address */
2330 for (mc_list
= dev
->mc_list
; mc_list
!= NULL
; mc_list
= mc_list
->next
) {
2331 memcpy(data
, &mc_list
->dmi_addr
, 6);
2332 cmd
.data0
= ntohl(data
[0]);
2333 cmd
.data1
= ntohl(data
[1]);
2334 err
= myri10ge_send_cmd(mgp
, MXGEFW_JOIN_MULTICAST_GROUP
,
2338 printk(KERN_ERR
"myri10ge: %s: Failed "
2339 "MXGEFW_JOIN_MULTICAST_GROUP, error status:"
2340 "%d\t", dev
->name
, err
);
2341 printk(KERN_ERR
"MAC %02x:%02x:%02x:%02x:%02x:%02x\n",
2342 ((unsigned char *)&mc_list
->dmi_addr
)[0],
2343 ((unsigned char *)&mc_list
->dmi_addr
)[1],
2344 ((unsigned char *)&mc_list
->dmi_addr
)[2],
2345 ((unsigned char *)&mc_list
->dmi_addr
)[3],
2346 ((unsigned char *)&mc_list
->dmi_addr
)[4],
2347 ((unsigned char *)&mc_list
->dmi_addr
)[5]
2352 /* Enable multicast filtering */
2353 err
= myri10ge_send_cmd(mgp
, MXGEFW_DISABLE_ALLMULTI
, &cmd
, 1);
2355 printk(KERN_ERR
"myri10ge: %s: Failed MXGEFW_DISABLE_ALLMULTI,"
2356 "error status: %d\n", dev
->name
, err
);
2366 static int myri10ge_set_mac_address(struct net_device
*dev
, void *addr
)
2368 struct sockaddr
*sa
= addr
;
2369 struct myri10ge_priv
*mgp
= netdev_priv(dev
);
2372 if (!is_valid_ether_addr(sa
->sa_data
))
2373 return -EADDRNOTAVAIL
;
2375 status
= myri10ge_update_mac_address(mgp
, sa
->sa_data
);
2378 "myri10ge: %s: changing mac address failed with %d\n",
2383 /* change the dev structure */
2384 memcpy(dev
->dev_addr
, sa
->sa_data
, 6);
2388 static int myri10ge_change_mtu(struct net_device
*dev
, int new_mtu
)
2390 struct myri10ge_priv
*mgp
= netdev_priv(dev
);
2393 if ((new_mtu
< 68) || (ETH_HLEN
+ new_mtu
> MYRI10GE_MAX_ETHER_MTU
)) {
2394 printk(KERN_ERR
"myri10ge: %s: new mtu (%d) is not valid\n",
2395 dev
->name
, new_mtu
);
2398 printk(KERN_INFO
"%s: changing mtu from %d to %d\n",
2399 dev
->name
, dev
->mtu
, new_mtu
);
2401 /* if we change the mtu on an active device, we must
2402 * reset the device so the firmware sees the change */
2403 myri10ge_close(dev
);
2413 * Enable ECRC to align PCI-E Completion packets on an 8-byte boundary.
2414 * Only do it if the bridge is a root port since we don't want to disturb
2415 * any other device, except if forced with myri10ge_ecrc_enable > 1.
2418 static void myri10ge_enable_ecrc(struct myri10ge_priv
*mgp
)
2420 struct pci_dev
*bridge
= mgp
->pdev
->bus
->self
;
2421 struct device
*dev
= &mgp
->pdev
->dev
;
2428 if (!myri10ge_ecrc_enable
|| !bridge
)
2431 /* check that the bridge is a root port */
2432 cap
= pci_find_capability(bridge
, PCI_CAP_ID_EXP
);
2433 pci_read_config_word(bridge
, cap
+ PCI_CAP_FLAGS
, &val
);
2434 ext_type
= (val
& PCI_EXP_FLAGS_TYPE
) >> 4;
2435 if (ext_type
!= PCI_EXP_TYPE_ROOT_PORT
) {
2436 if (myri10ge_ecrc_enable
> 1) {
2437 struct pci_dev
*old_bridge
= bridge
;
2439 /* Walk the hierarchy up to the root port
2440 * where ECRC has to be enabled */
2442 bridge
= bridge
->bus
->self
;
2445 "Failed to find root port"
2446 " to force ECRC\n");
2450 pci_find_capability(bridge
, PCI_CAP_ID_EXP
);
2451 pci_read_config_word(bridge
,
2452 cap
+ PCI_CAP_FLAGS
, &val
);
2453 ext_type
= (val
& PCI_EXP_FLAGS_TYPE
) >> 4;
2454 } while (ext_type
!= PCI_EXP_TYPE_ROOT_PORT
);
2457 "Forcing ECRC on non-root port %s"
2458 " (enabling on root port %s)\n",
2459 pci_name(old_bridge
), pci_name(bridge
));
2462 "Not enabling ECRC on non-root port %s\n",
2468 cap
= pci_find_ext_capability(bridge
, PCI_EXT_CAP_ID_ERR
);
2472 ret
= pci_read_config_dword(bridge
, cap
+ PCI_ERR_CAP
, &err_cap
);
2474 dev_err(dev
, "failed reading ext-conf-space of %s\n",
2476 dev_err(dev
, "\t pci=nommconf in use? "
2477 "or buggy/incomplete/absent ACPI MCFG attr?\n");
2480 if (!(err_cap
& PCI_ERR_CAP_ECRC_GENC
))
2483 err_cap
|= PCI_ERR_CAP_ECRC_GENE
;
2484 pci_write_config_dword(bridge
, cap
+ PCI_ERR_CAP
, err_cap
);
2485 dev_info(dev
, "Enabled ECRC on upstream bridge %s\n", pci_name(bridge
));
2489 * The Lanai Z8E PCI-E interface achieves higher Read-DMA throughput
2490 * when the PCI-E Completion packets are aligned on an 8-byte
2491 * boundary. Some PCI-E chip sets always align Completion packets; on
2492 * the ones that do not, the alignment can be enforced by enabling
2493 * ECRC generation (if supported).
2495 * When PCI-E Completion packets are not aligned, it is actually more
2496 * efficient to limit Read-DMA transactions to 2KB, rather than 4KB.
2498 * If the driver can neither enable ECRC nor verify that it has
2499 * already been enabled, then it must use a firmware image which works
2500 * around unaligned completion packets (myri10ge_ethp_z8e.dat), and it
2501 * should also ensure that it never gives the device a Read-DMA which is
2502 * larger than 2KB by setting the tx.boundary to 2KB. If ECRC is
2503 * enabled, then the driver should use the aligned (myri10ge_eth_z8e.dat)
2504 * firmware image, and set tx.boundary to 4KB.
2507 static void myri10ge_firmware_probe(struct myri10ge_priv
*mgp
)
2509 struct pci_dev
*pdev
= mgp
->pdev
;
2510 struct device
*dev
= &pdev
->dev
;
2513 mgp
->tx
.boundary
= 4096;
2515 * Verify the max read request size was set to 4KB
2516 * before trying the test with 4KB.
2518 status
= pcie_get_readrq(pdev
);
2520 dev_err(dev
, "Couldn't read max read req size: %d\n", status
);
2523 if (status
!= 4096) {
2524 dev_warn(dev
, "Max Read Request size != 4096 (%d)\n", status
);
2525 mgp
->tx
.boundary
= 2048;
2528 * load the optimized firmware (which assumes aligned PCIe
2529 * completions) in order to see if it works on this host.
2531 mgp
->fw_name
= myri10ge_fw_aligned
;
2532 status
= myri10ge_load_firmware(mgp
);
2538 * Enable ECRC if possible
2540 myri10ge_enable_ecrc(mgp
);
2543 * Run a DMA test which watches for unaligned completions and
2544 * aborts on the first one seen.
2547 status
= myri10ge_dma_test(mgp
, MXGEFW_CMD_UNALIGNED_TEST
);
2549 return; /* keep the aligned firmware */
2551 if (status
!= -E2BIG
)
2552 dev_warn(dev
, "DMA test failed: %d\n", status
);
2553 if (status
== -ENOSYS
)
2554 dev_warn(dev
, "Falling back to ethp! "
2555 "Please install up to date fw\n");
2557 /* fall back to using the unaligned firmware */
2558 mgp
->tx
.boundary
= 2048;
2559 mgp
->fw_name
= myri10ge_fw_unaligned
;
2563 static void myri10ge_select_firmware(struct myri10ge_priv
*mgp
)
2565 if (myri10ge_force_firmware
== 0) {
2566 int link_width
, exp_cap
;
2569 exp_cap
= pci_find_capability(mgp
->pdev
, PCI_CAP_ID_EXP
);
2570 pci_read_config_word(mgp
->pdev
, exp_cap
+ PCI_EXP_LNKSTA
, &lnk
);
2571 link_width
= (lnk
>> 4) & 0x3f;
2573 /* Check to see if Link is less than 8 or if the
2574 * upstream bridge is known to provide aligned
2576 if (link_width
< 8) {
2577 dev_info(&mgp
->pdev
->dev
, "PCIE x%d Link\n",
2579 mgp
->tx
.boundary
= 4096;
2580 mgp
->fw_name
= myri10ge_fw_aligned
;
2582 myri10ge_firmware_probe(mgp
);
2585 if (myri10ge_force_firmware
== 1) {
2586 dev_info(&mgp
->pdev
->dev
,
2587 "Assuming aligned completions (forced)\n");
2588 mgp
->tx
.boundary
= 4096;
2589 mgp
->fw_name
= myri10ge_fw_aligned
;
2591 dev_info(&mgp
->pdev
->dev
,
2592 "Assuming unaligned completions (forced)\n");
2593 mgp
->tx
.boundary
= 2048;
2594 mgp
->fw_name
= myri10ge_fw_unaligned
;
2597 if (myri10ge_fw_name
!= NULL
) {
2598 dev_info(&mgp
->pdev
->dev
, "overriding firmware to %s\n",
2600 mgp
->fw_name
= myri10ge_fw_name
;
2606 static int myri10ge_suspend(struct pci_dev
*pdev
, pm_message_t state
)
2608 struct myri10ge_priv
*mgp
;
2609 struct net_device
*netdev
;
2611 mgp
= pci_get_drvdata(pdev
);
2616 netif_device_detach(netdev
);
2617 if (netif_running(netdev
)) {
2618 printk(KERN_INFO
"myri10ge: closing %s\n", netdev
->name
);
2620 myri10ge_close(netdev
);
2623 myri10ge_dummy_rdma(mgp
, 0);
2624 pci_save_state(pdev
);
2625 pci_disable_device(pdev
);
2627 return pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
2630 static int myri10ge_resume(struct pci_dev
*pdev
)
2632 struct myri10ge_priv
*mgp
;
2633 struct net_device
*netdev
;
2637 mgp
= pci_get_drvdata(pdev
);
2641 pci_set_power_state(pdev
, 0); /* zeros conf space as a side effect */
2642 msleep(5); /* give card time to respond */
2643 pci_read_config_word(mgp
->pdev
, PCI_VENDOR_ID
, &vendor
);
2644 if (vendor
== 0xffff) {
2645 printk(KERN_ERR
"myri10ge: %s: device disappeared!\n",
2650 status
= pci_restore_state(pdev
);
2654 status
= pci_enable_device(pdev
);
2656 dev_err(&pdev
->dev
, "failed to enable device\n");
2660 pci_set_master(pdev
);
2662 myri10ge_reset(mgp
);
2663 myri10ge_dummy_rdma(mgp
, 1);
2665 /* Save configuration space to be restored if the
2666 * nic resets due to a parity error */
2667 pci_save_state(pdev
);
2669 if (netif_running(netdev
)) {
2671 status
= myri10ge_open(netdev
);
2674 goto abort_with_enabled
;
2677 netif_device_attach(netdev
);
2682 pci_disable_device(pdev
);
2687 #endif /* CONFIG_PM */
2689 static u32
myri10ge_read_reboot(struct myri10ge_priv
*mgp
)
2691 struct pci_dev
*pdev
= mgp
->pdev
;
2692 int vs
= mgp
->vendor_specific_offset
;
2695 /*enter read32 mode */
2696 pci_write_config_byte(pdev
, vs
+ 0x10, 0x3);
2698 /*read REBOOT_STATUS (0xfffffff0) */
2699 pci_write_config_dword(pdev
, vs
+ 0x18, 0xfffffff0);
2700 pci_read_config_dword(pdev
, vs
+ 0x14, &reboot
);
2705 * This watchdog is used to check whether the board has suffered
2706 * from a parity error and needs to be recovered.
2708 static void myri10ge_watchdog(struct work_struct
*work
)
2710 struct myri10ge_priv
*mgp
=
2711 container_of(work
, struct myri10ge_priv
, watchdog_work
);
2716 mgp
->watchdog_resets
++;
2717 pci_read_config_word(mgp
->pdev
, PCI_COMMAND
, &cmd
);
2718 if ((cmd
& PCI_COMMAND_MASTER
) == 0) {
2719 /* Bus master DMA disabled? Check to see
2720 * if the card rebooted due to a parity error
2721 * For now, just report it */
2722 reboot
= myri10ge_read_reboot(mgp
);
2724 "myri10ge: %s: NIC rebooted (0x%x),%s resetting\n",
2725 mgp
->dev
->name
, reboot
,
2726 myri10ge_reset_recover
? " " : " not");
2727 if (myri10ge_reset_recover
== 0)
2730 myri10ge_reset_recover
--;
2733 * A rebooted nic will come back with config space as
2734 * it was after power was applied to PCIe bus.
2735 * Attempt to restore config space which was saved
2736 * when the driver was loaded, or the last time the
2737 * nic was resumed from power saving mode.
2739 pci_restore_state(mgp
->pdev
);
2741 /* save state again for accounting reasons */
2742 pci_save_state(mgp
->pdev
);
2745 /* if we get back -1's from our slot, perhaps somebody
2746 * powered off our card. Don't try to reset it in
2748 if (cmd
== 0xffff) {
2749 pci_read_config_word(mgp
->pdev
, PCI_VENDOR_ID
, &vendor
);
2750 if (vendor
== 0xffff) {
2752 "myri10ge: %s: device disappeared!\n",
2757 /* Perhaps it is a software error. Try to reset */
2759 printk(KERN_ERR
"myri10ge: %s: device timeout, resetting\n",
2761 printk(KERN_INFO
"myri10ge: %s: %d %d %d %d %d\n",
2762 mgp
->dev
->name
, mgp
->tx
.req
, mgp
->tx
.done
,
2763 mgp
->tx
.pkt_start
, mgp
->tx
.pkt_done
,
2764 (int)ntohl(mgp
->fw_stats
->send_done_count
));
2766 printk(KERN_INFO
"myri10ge: %s: %d %d %d %d %d\n",
2767 mgp
->dev
->name
, mgp
->tx
.req
, mgp
->tx
.done
,
2768 mgp
->tx
.pkt_start
, mgp
->tx
.pkt_done
,
2769 (int)ntohl(mgp
->fw_stats
->send_done_count
));
2772 myri10ge_close(mgp
->dev
);
2773 status
= myri10ge_load_firmware(mgp
);
2775 printk(KERN_ERR
"myri10ge: %s: failed to load firmware\n",
2778 myri10ge_open(mgp
->dev
);
2783 * We use our own timer routine rather than relying upon
2784 * netdev->tx_timeout because we have a very large hardware transmit
2785 * queue. Due to the large queue, the netdev->tx_timeout function
2786 * cannot detect a NIC with a parity error in a timely fashion if the
2787 * NIC is lightly loaded.
2789 static void myri10ge_watchdog_timer(unsigned long arg
)
2791 struct myri10ge_priv
*mgp
;
2794 mgp
= (struct myri10ge_priv
*)arg
;
2796 if (mgp
->rx_small
.watchdog_needed
) {
2797 myri10ge_alloc_rx_pages(mgp
, &mgp
->rx_small
,
2798 mgp
->small_bytes
+ MXGEFW_PAD
, 1);
2799 if (mgp
->rx_small
.fill_cnt
- mgp
->rx_small
.cnt
>=
2800 myri10ge_fill_thresh
)
2801 mgp
->rx_small
.watchdog_needed
= 0;
2803 if (mgp
->rx_big
.watchdog_needed
) {
2804 myri10ge_alloc_rx_pages(mgp
, &mgp
->rx_big
, mgp
->big_bytes
, 1);
2805 if (mgp
->rx_big
.fill_cnt
- mgp
->rx_big
.cnt
>=
2806 myri10ge_fill_thresh
)
2807 mgp
->rx_big
.watchdog_needed
= 0;
2809 rx_pause_cnt
= ntohl(mgp
->fw_stats
->dropped_pause
);
2811 if (mgp
->tx
.req
!= mgp
->tx
.done
&&
2812 mgp
->tx
.done
== mgp
->watchdog_tx_done
&&
2813 mgp
->watchdog_tx_req
!= mgp
->watchdog_tx_done
) {
2814 /* nic seems like it might be stuck.. */
2815 if (rx_pause_cnt
!= mgp
->watchdog_pause
) {
2816 if (net_ratelimit())
2817 printk(KERN_WARNING
"myri10ge %s:"
2818 "TX paused, check link partner\n",
2821 schedule_work(&mgp
->watchdog_work
);
2826 mod_timer(&mgp
->watchdog_timer
,
2827 jiffies
+ myri10ge_watchdog_timeout
* HZ
);
2828 mgp
->watchdog_tx_done
= mgp
->tx
.done
;
2829 mgp
->watchdog_tx_req
= mgp
->tx
.req
;
2830 mgp
->watchdog_pause
= rx_pause_cnt
;
2833 static int myri10ge_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
2835 struct net_device
*netdev
;
2836 struct myri10ge_priv
*mgp
;
2837 struct device
*dev
= &pdev
->dev
;
2840 int status
= -ENXIO
;
2843 netdev
= alloc_etherdev(sizeof(*mgp
));
2844 if (netdev
== NULL
) {
2845 dev_err(dev
, "Could not allocate ethernet device\n");
2849 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
2851 mgp
= netdev_priv(netdev
);
2852 memset(mgp
, 0, sizeof(*mgp
));
2854 netif_napi_add(netdev
, &mgp
->napi
,
2855 myri10ge_poll
, myri10ge_napi_weight
);
2857 mgp
->csum_flag
= MXGEFW_FLAGS_CKSUM
;
2858 mgp
->pause
= myri10ge_flow_control
;
2859 mgp
->intr_coal_delay
= myri10ge_intr_coal_delay
;
2860 mgp
->msg_enable
= netif_msg_init(myri10ge_debug
, MYRI10GE_MSG_DEFAULT
);
2861 init_waitqueue_head(&mgp
->down_wq
);
2863 if (pci_enable_device(pdev
)) {
2864 dev_err(&pdev
->dev
, "pci_enable_device call failed\n");
2866 goto abort_with_netdev
;
2869 /* Find the vendor-specific cap so we can check
2870 * the reboot register later on */
2871 mgp
->vendor_specific_offset
2872 = pci_find_capability(pdev
, PCI_CAP_ID_VNDR
);
2874 /* Set our max read request to 4KB */
2875 status
= pcie_set_readrq(pdev
, 4096);
2877 dev_err(&pdev
->dev
, "Error %d writing PCI_EXP_DEVCTL\n",
2879 goto abort_with_netdev
;
2882 pci_set_master(pdev
);
2884 status
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
);
2888 "64-bit pci address mask was refused, trying 32-bit");
2889 status
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
2892 dev_err(&pdev
->dev
, "Error %d setting DMA mask\n", status
);
2893 goto abort_with_netdev
;
2895 mgp
->cmd
= dma_alloc_coherent(&pdev
->dev
, sizeof(*mgp
->cmd
),
2896 &mgp
->cmd_bus
, GFP_KERNEL
);
2897 if (mgp
->cmd
== NULL
)
2898 goto abort_with_netdev
;
2900 mgp
->fw_stats
= dma_alloc_coherent(&pdev
->dev
, sizeof(*mgp
->fw_stats
),
2901 &mgp
->fw_stats_bus
, GFP_KERNEL
);
2902 if (mgp
->fw_stats
== NULL
)
2903 goto abort_with_cmd
;
2905 mgp
->board_span
= pci_resource_len(pdev
, 0);
2906 mgp
->iomem_base
= pci_resource_start(pdev
, 0);
2908 mgp
->wc_enabled
= 0;
2910 mgp
->mtrr
= mtrr_add(mgp
->iomem_base
, mgp
->board_span
,
2911 MTRR_TYPE_WRCOMB
, 1);
2913 mgp
->wc_enabled
= 1;
2915 /* Hack. need to get rid of these magic numbers */
2917 2 * 1024 * 1024 - (2 * (48 * 1024) + (32 * 1024)) - 0x100;
2918 if (mgp
->sram_size
> mgp
->board_span
) {
2919 dev_err(&pdev
->dev
, "board span %ld bytes too small\n",
2923 mgp
->sram
= ioremap(mgp
->iomem_base
, mgp
->board_span
);
2924 if (mgp
->sram
== NULL
) {
2925 dev_err(&pdev
->dev
, "ioremap failed for %ld bytes at 0x%lx\n",
2926 mgp
->board_span
, mgp
->iomem_base
);
2930 memcpy_fromio(mgp
->eeprom_strings
,
2931 mgp
->sram
+ mgp
->sram_size
- MYRI10GE_EEPROM_STRINGS_SIZE
,
2932 MYRI10GE_EEPROM_STRINGS_SIZE
);
2933 memset(mgp
->eeprom_strings
+ MYRI10GE_EEPROM_STRINGS_SIZE
- 2, 0, 2);
2934 status
= myri10ge_read_mac_addr(mgp
);
2936 goto abort_with_ioremap
;
2938 for (i
= 0; i
< ETH_ALEN
; i
++)
2939 netdev
->dev_addr
[i
] = mgp
->mac_addr
[i
];
2941 /* allocate rx done ring */
2942 bytes
= myri10ge_max_intr_slots
* sizeof(*mgp
->rx_done
.entry
);
2943 mgp
->rx_done
.entry
= dma_alloc_coherent(&pdev
->dev
, bytes
,
2944 &mgp
->rx_done
.bus
, GFP_KERNEL
);
2945 if (mgp
->rx_done
.entry
== NULL
)
2946 goto abort_with_ioremap
;
2947 memset(mgp
->rx_done
.entry
, 0, bytes
);
2949 myri10ge_select_firmware(mgp
);
2951 status
= myri10ge_load_firmware(mgp
);
2953 dev_err(&pdev
->dev
, "failed to load firmware\n");
2954 goto abort_with_rx_done
;
2957 status
= myri10ge_reset(mgp
);
2959 dev_err(&pdev
->dev
, "failed reset\n");
2960 goto abort_with_firmware
;
2963 pci_set_drvdata(pdev
, mgp
);
2964 if ((myri10ge_initial_mtu
+ ETH_HLEN
) > MYRI10GE_MAX_ETHER_MTU
)
2965 myri10ge_initial_mtu
= MYRI10GE_MAX_ETHER_MTU
- ETH_HLEN
;
2966 if ((myri10ge_initial_mtu
+ ETH_HLEN
) < 68)
2967 myri10ge_initial_mtu
= 68;
2968 netdev
->mtu
= myri10ge_initial_mtu
;
2969 netdev
->open
= myri10ge_open
;
2970 netdev
->stop
= myri10ge_close
;
2971 netdev
->hard_start_xmit
= myri10ge_xmit
;
2972 netdev
->get_stats
= myri10ge_get_stats
;
2973 netdev
->base_addr
= mgp
->iomem_base
;
2974 netdev
->change_mtu
= myri10ge_change_mtu
;
2975 netdev
->set_multicast_list
= myri10ge_set_multicast_list
;
2976 netdev
->set_mac_address
= myri10ge_set_mac_address
;
2977 netdev
->features
= NETIF_F_SG
| NETIF_F_HW_CSUM
| NETIF_F_TSO
;
2979 netdev
->features
|= NETIF_F_HIGHDMA
;
2981 /* make sure we can get an irq, and that MSI can be
2982 * setup (if available). Also ensure netdev->irq
2983 * is set to correct value if MSI is enabled */
2984 status
= myri10ge_request_irq(mgp
);
2986 goto abort_with_firmware
;
2987 netdev
->irq
= pdev
->irq
;
2988 myri10ge_free_irq(mgp
);
2990 /* Save configuration space to be restored if the
2991 * nic resets due to a parity error */
2992 pci_save_state(pdev
);
2994 /* Setup the watchdog timer */
2995 setup_timer(&mgp
->watchdog_timer
, myri10ge_watchdog_timer
,
2996 (unsigned long)mgp
);
2998 SET_ETHTOOL_OPS(netdev
, &myri10ge_ethtool_ops
);
2999 INIT_WORK(&mgp
->watchdog_work
, myri10ge_watchdog
);
3000 status
= register_netdev(netdev
);
3002 dev_err(&pdev
->dev
, "register_netdev failed: %d\n", status
);
3003 goto abort_with_state
;
3005 dev_info(dev
, "%s IRQ %d, tx bndry %d, fw %s, WC %s\n",
3006 (mgp
->msi_enabled
? "MSI" : "xPIC"),
3007 netdev
->irq
, mgp
->tx
.boundary
, mgp
->fw_name
,
3008 (mgp
->wc_enabled
? "Enabled" : "Disabled"));
3013 pci_restore_state(pdev
);
3015 abort_with_firmware
:
3016 myri10ge_dummy_rdma(mgp
, 0);
3019 bytes
= myri10ge_max_intr_slots
* sizeof(*mgp
->rx_done
.entry
);
3020 dma_free_coherent(&pdev
->dev
, bytes
,
3021 mgp
->rx_done
.entry
, mgp
->rx_done
.bus
);
3029 mtrr_del(mgp
->mtrr
, mgp
->iomem_base
, mgp
->board_span
);
3031 dma_free_coherent(&pdev
->dev
, sizeof(*mgp
->fw_stats
),
3032 mgp
->fw_stats
, mgp
->fw_stats_bus
);
3035 dma_free_coherent(&pdev
->dev
, sizeof(*mgp
->cmd
),
3036 mgp
->cmd
, mgp
->cmd_bus
);
3040 free_netdev(netdev
);
3047 * Does what is necessary to shutdown one Myrinet device. Called
3048 * once for each Myrinet card by the kernel when a module is
3051 static void myri10ge_remove(struct pci_dev
*pdev
)
3053 struct myri10ge_priv
*mgp
;
3054 struct net_device
*netdev
;
3057 mgp
= pci_get_drvdata(pdev
);
3061 flush_scheduled_work();
3063 unregister_netdev(netdev
);
3065 myri10ge_dummy_rdma(mgp
, 0);
3067 /* avoid a memory leak */
3068 pci_restore_state(pdev
);
3070 bytes
= myri10ge_max_intr_slots
* sizeof(*mgp
->rx_done
.entry
);
3071 dma_free_coherent(&pdev
->dev
, bytes
,
3072 mgp
->rx_done
.entry
, mgp
->rx_done
.bus
);
3078 mtrr_del(mgp
->mtrr
, mgp
->iomem_base
, mgp
->board_span
);
3080 dma_free_coherent(&pdev
->dev
, sizeof(*mgp
->fw_stats
),
3081 mgp
->fw_stats
, mgp
->fw_stats_bus
);
3083 dma_free_coherent(&pdev
->dev
, sizeof(*mgp
->cmd
),
3084 mgp
->cmd
, mgp
->cmd_bus
);
3086 free_netdev(netdev
);
3087 pci_set_drvdata(pdev
, NULL
);
3090 #define PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E 0x0008
3091 #define PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E_9 0x0009
3093 static struct pci_device_id myri10ge_pci_tbl
[] = {
3094 {PCI_DEVICE(PCI_VENDOR_ID_MYRICOM
, PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E
)},
3096 (PCI_VENDOR_ID_MYRICOM
, PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E_9
)},
3100 static struct pci_driver myri10ge_driver
= {
3102 .probe
= myri10ge_probe
,
3103 .remove
= myri10ge_remove
,
3104 .id_table
= myri10ge_pci_tbl
,
3106 .suspend
= myri10ge_suspend
,
3107 .resume
= myri10ge_resume
,
3111 static __init
int myri10ge_init_module(void)
3113 printk(KERN_INFO
"%s: Version %s\n", myri10ge_driver
.name
,
3114 MYRI10GE_VERSION_STR
);
3115 return pci_register_driver(&myri10ge_driver
);
3118 module_init(myri10ge_init_module
);
3120 static __exit
void myri10ge_cleanup_module(void)
3122 pci_unregister_driver(&myri10ge_driver
);
3125 module_exit(myri10ge_cleanup_module
);