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 <net/checksum.h>
64 #include <asm/byteorder.h>
66 #include <asm/processor.h>
71 #include "myri10ge_mcp.h"
72 #include "myri10ge_mcp_gen_header.h"
74 #define MYRI10GE_VERSION_STR "1.2.0"
76 MODULE_DESCRIPTION("Myricom 10G driver (10GbE)");
77 MODULE_AUTHOR("Maintainer: help@myri.com");
78 MODULE_VERSION(MYRI10GE_VERSION_STR);
79 MODULE_LICENSE("Dual BSD/GPL");
81 #define MYRI10GE_MAX_ETHER_MTU 9014
83 #define MYRI10GE_ETH_STOPPED 0
84 #define MYRI10GE_ETH_STOPPING 1
85 #define MYRI10GE_ETH_STARTING 2
86 #define MYRI10GE_ETH_RUNNING 3
87 #define MYRI10GE_ETH_OPEN_FAILED 4
89 #define MYRI10GE_EEPROM_STRINGS_SIZE 256
90 #define MYRI10GE_MAX_SEND_DESC_TSO ((65536 / 2048) * 2)
92 #define MYRI10GE_NO_CONFIRM_DATA htonl(0xffffffff)
93 #define MYRI10GE_NO_RESPONSE_RESULT 0xffffffff
95 #define MYRI10GE_ALLOC_ORDER 0
96 #define MYRI10GE_ALLOC_SIZE ((1 << MYRI10GE_ALLOC_ORDER) * PAGE_SIZE)
97 #define MYRI10GE_MAX_FRAGS_PER_FRAME (MYRI10GE_MAX_ETHER_MTU/MYRI10GE_ALLOC_SIZE + 1)
99 struct myri10ge_rx_buffer_state {
102 DECLARE_PCI_UNMAP_ADDR(bus)
103 DECLARE_PCI_UNMAP_LEN(len)
106 struct myri10ge_tx_buffer_state {
109 DECLARE_PCI_UNMAP_ADDR(bus)
110 DECLARE_PCI_UNMAP_LEN(len)
113 struct myri10ge_cmd {
119 struct myri10ge_rx_buf {
120 struct mcp_kreq_ether_recv __iomem *lanai; /* lanai ptr for recv ring */
121 u8 __iomem *wc_fifo; /* w/c rx dma addr fifo address */
122 struct mcp_kreq_ether_recv *shadow; /* host shadow of recv ring */
123 struct myri10ge_rx_buffer_state *info;
130 int mask; /* number of rx slots -1 */
134 struct myri10ge_tx_buf {
135 struct mcp_kreq_ether_send __iomem *lanai; /* lanai ptr for sendq */
136 u8 __iomem *wc_fifo; /* w/c send fifo address */
137 struct mcp_kreq_ether_send *req_list; /* host shadow of sendq */
139 struct myri10ge_tx_buffer_state *info;
140 int mask; /* number of transmit slots -1 */
141 int boundary; /* boundary transmits cannot cross */
142 int req ____cacheline_aligned; /* transmit slots submitted */
143 int pkt_start; /* packets started */
144 int done ____cacheline_aligned; /* transmit slots completed */
145 int pkt_done; /* packets completed */
148 struct myri10ge_rx_done {
149 struct mcp_slot *entry;
155 struct myri10ge_priv {
156 int running; /* running? */
157 int csum_flag; /* rx_csums? */
158 struct myri10ge_tx_buf tx; /* transmit ring */
159 struct myri10ge_rx_buf rx_small;
160 struct myri10ge_rx_buf rx_big;
161 struct myri10ge_rx_done rx_done;
164 struct net_device *dev;
165 struct net_device_stats stats;
168 unsigned long board_span;
169 unsigned long iomem_base;
170 __be32 __iomem *irq_claim;
171 __be32 __iomem *irq_deassert;
172 char *mac_addr_string;
173 struct mcp_cmd_response *cmd;
175 struct mcp_irq_data *fw_stats;
176 dma_addr_t fw_stats_bus;
177 struct pci_dev *pdev;
180 unsigned int rdma_tags_available;
182 __be32 __iomem *intr_coal_delay_ptr;
188 wait_queue_head_t down_wq;
189 struct work_struct watchdog_work;
190 struct timer_list watchdog_timer;
191 int watchdog_tx_done;
197 char eeprom_strings[MYRI10GE_EEPROM_STRINGS_SIZE];
198 char fw_version[128];
202 int adopted_rx_filter_bug;
203 u8 mac_addr[6]; /* eeprom mac address */
204 unsigned long serial_number;
205 int vendor_specific_offset;
206 int fw_multicast_support;
214 static char *myri10ge_fw_unaligned = "myri10ge_ethp_z8e.dat";
215 static char *myri10ge_fw_aligned = "myri10ge_eth_z8e.dat";
217 static char *myri10ge_fw_name = NULL;
218 module_param(myri10ge_fw_name, charp, S_IRUGO | S_IWUSR);
219 MODULE_PARM_DESC(myri10ge_fw_name, "Firmware image name\n");
221 static int myri10ge_ecrc_enable = 1;
222 module_param(myri10ge_ecrc_enable, int, S_IRUGO);
223 MODULE_PARM_DESC(myri10ge_ecrc_enable, "Enable Extended CRC on PCI-E\n");
225 static int myri10ge_max_intr_slots = 1024;
226 module_param(myri10ge_max_intr_slots, int, S_IRUGO);
227 MODULE_PARM_DESC(myri10ge_max_intr_slots, "Interrupt queue slots\n");
229 static int myri10ge_small_bytes = -1; /* -1 == auto */
230 module_param(myri10ge_small_bytes, int, S_IRUGO | S_IWUSR);
231 MODULE_PARM_DESC(myri10ge_small_bytes, "Threshold of small packets\n");
233 static int myri10ge_msi = 1; /* enable msi by default */
234 module_param(myri10ge_msi, int, S_IRUGO | S_IWUSR);
235 MODULE_PARM_DESC(myri10ge_msi, "Enable Message Signalled Interrupts\n");
237 static int myri10ge_intr_coal_delay = 25;
238 module_param(myri10ge_intr_coal_delay, int, S_IRUGO);
239 MODULE_PARM_DESC(myri10ge_intr_coal_delay, "Interrupt coalescing delay\n");
241 static int myri10ge_flow_control = 1;
242 module_param(myri10ge_flow_control, int, S_IRUGO);
243 MODULE_PARM_DESC(myri10ge_flow_control, "Pause parameter\n");
245 static int myri10ge_deassert_wait = 1;
246 module_param(myri10ge_deassert_wait, int, S_IRUGO | S_IWUSR);
247 MODULE_PARM_DESC(myri10ge_deassert_wait,
248 "Wait when deasserting legacy interrupts\n");
250 static int myri10ge_force_firmware = 0;
251 module_param(myri10ge_force_firmware, int, S_IRUGO);
252 MODULE_PARM_DESC(myri10ge_force_firmware,
253 "Force firmware to assume aligned completions\n");
255 static int myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN;
256 module_param(myri10ge_initial_mtu, int, S_IRUGO);
257 MODULE_PARM_DESC(myri10ge_initial_mtu, "Initial MTU\n");
259 static int myri10ge_napi_weight = 64;
260 module_param(myri10ge_napi_weight, int, S_IRUGO);
261 MODULE_PARM_DESC(myri10ge_napi_weight, "Set NAPI weight\n");
263 static int myri10ge_watchdog_timeout = 1;
264 module_param(myri10ge_watchdog_timeout, int, S_IRUGO);
265 MODULE_PARM_DESC(myri10ge_watchdog_timeout, "Set watchdog timeout\n");
267 static int myri10ge_max_irq_loops = 1048576;
268 module_param(myri10ge_max_irq_loops, int, S_IRUGO);
269 MODULE_PARM_DESC(myri10ge_max_irq_loops,
270 "Set stuck legacy IRQ detection threshold\n");
272 #define MYRI10GE_MSG_DEFAULT NETIF_MSG_LINK
274 static int myri10ge_debug = -1; /* defaults above */
275 module_param(myri10ge_debug, int, 0);
276 MODULE_PARM_DESC(myri10ge_debug, "Debug level (0=none,...,16=all)");
278 static int myri10ge_fill_thresh = 256;
279 module_param(myri10ge_fill_thresh, int, S_IRUGO | S_IWUSR);
280 MODULE_PARM_DESC(myri10ge_fill_thresh, "Number of empty rx slots allowed\n");
282 static int myri10ge_wcfifo = 1;
283 module_param(myri10ge_wcfifo, int, S_IRUGO);
284 MODULE_PARM_DESC(myri10ge_wcfifo, "Enable WC Fifo when WC is enabled\n");
286 #define MYRI10GE_FW_OFFSET 1024*1024
287 #define MYRI10GE_HIGHPART_TO_U32(X) \
288 (sizeof (X) == 8) ? ((u32)((u64)(X) >> 32)) : (0)
289 #define MYRI10GE_LOWPART_TO_U32(X) ((u32)(X))
291 #define myri10ge_pio_copy(to,from,size) __iowrite64_copy(to,from,size/8)
293 static inline void put_be32(__be32 val, __be32 __iomem * p)
295 __raw_writel((__force __u32) val, (__force void __iomem *)p);
299 myri10ge_send_cmd(struct myri10ge_priv *mgp, u32 cmd,
300 struct myri10ge_cmd *data, int atomic)
303 char buf_bytes[sizeof(*buf) + 8];
304 struct mcp_cmd_response *response = mgp->cmd;
305 char __iomem *cmd_addr = mgp->sram + MXGEFW_ETH_CMD;
306 u32 dma_low, dma_high, result, value;
309 /* ensure buf is aligned to 8 bytes */
310 buf = (struct mcp_cmd *)ALIGN((unsigned long)buf_bytes, 8);
312 buf->data0 = htonl(data->data0);
313 buf->data1 = htonl(data->data1);
314 buf->data2 = htonl(data->data2);
315 buf->cmd = htonl(cmd);
316 dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus);
317 dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus);
319 buf->response_addr.low = htonl(dma_low);
320 buf->response_addr.high = htonl(dma_high);
321 response->result = htonl(MYRI10GE_NO_RESPONSE_RESULT);
323 myri10ge_pio_copy(cmd_addr, buf, sizeof(*buf));
325 /* wait up to 15ms. Longest command is the DMA benchmark,
326 * which is capped at 5ms, but runs from a timeout handler
327 * that runs every 7.8ms. So a 15ms timeout leaves us with
331 /* if atomic is set, do not sleep,
332 * and try to get the completion quickly
333 * (1ms will be enough for those commands) */
334 for (sleep_total = 0;
336 && response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT);
340 /* use msleep for most command */
341 for (sleep_total = 0;
343 && response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT);
348 result = ntohl(response->result);
349 value = ntohl(response->data);
350 if (result != MYRI10GE_NO_RESPONSE_RESULT) {
354 } else if (result == MXGEFW_CMD_UNKNOWN) {
357 dev_err(&mgp->pdev->dev,
358 "command %d failed, result = %d\n",
364 dev_err(&mgp->pdev->dev, "command %d timed out, result = %d\n",
370 * The eeprom strings on the lanaiX have the format
373 * PT:ddd mmm xx xx:xx:xx xx\0
374 * PV:ddd mmm xx xx:xx:xx xx\0
376 static int myri10ge_read_mac_addr(struct myri10ge_priv *mgp)
381 ptr = mgp->eeprom_strings;
382 limit = mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE;
384 while (*ptr != '\0' && ptr < limit) {
385 if (memcmp(ptr, "MAC=", 4) == 0) {
387 mgp->mac_addr_string = ptr;
388 for (i = 0; i < 6; i++) {
389 if ((ptr + 2) > limit)
392 simple_strtoul(ptr, &ptr, 16);
396 if (memcmp((const void *)ptr, "SN=", 3) == 0) {
398 mgp->serial_number = simple_strtoul(ptr, &ptr, 10);
400 while (ptr < limit && *ptr++) ;
406 dev_err(&mgp->pdev->dev, "failed to parse eeprom_strings\n");
411 * Enable or disable periodic RDMAs from the host to make certain
412 * chipsets resend dropped PCIe messages
415 static void myri10ge_dummy_rdma(struct myri10ge_priv *mgp, int enable)
417 char __iomem *submit;
419 u32 dma_low, dma_high;
422 /* clear confirmation addr */
426 /* send a rdma command to the PCIe engine, and wait for the
427 * response in the confirmation address. The firmware should
428 * write a -1 there to indicate it is alive and well
430 dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus);
431 dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus);
433 buf[0] = htonl(dma_high); /* confirm addr MSW */
434 buf[1] = htonl(dma_low); /* confirm addr LSW */
435 buf[2] = MYRI10GE_NO_CONFIRM_DATA; /* confirm data */
436 buf[3] = htonl(dma_high); /* dummy addr MSW */
437 buf[4] = htonl(dma_low); /* dummy addr LSW */
438 buf[5] = htonl(enable); /* enable? */
440 submit = mgp->sram + MXGEFW_BOOT_DUMMY_RDMA;
442 myri10ge_pio_copy(submit, &buf, sizeof(buf));
443 for (i = 0; mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 20; i++)
445 if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA)
446 dev_err(&mgp->pdev->dev, "dummy rdma %s failed\n",
447 (enable ? "enable" : "disable"));
451 myri10ge_validate_firmware(struct myri10ge_priv *mgp,
452 struct mcp_gen_header *hdr)
454 struct device *dev = &mgp->pdev->dev;
456 /* check firmware type */
457 if (ntohl(hdr->mcp_type) != MCP_TYPE_ETH) {
458 dev_err(dev, "Bad firmware type: 0x%x\n", ntohl(hdr->mcp_type));
462 /* save firmware version for ethtool */
463 strncpy(mgp->fw_version, hdr->version, sizeof(mgp->fw_version));
465 sscanf(mgp->fw_version, "%d.%d.%d", &mgp->fw_ver_major,
466 &mgp->fw_ver_minor, &mgp->fw_ver_tiny);
468 if (!(mgp->fw_ver_major == MXGEFW_VERSION_MAJOR
469 && mgp->fw_ver_minor == MXGEFW_VERSION_MINOR)) {
470 dev_err(dev, "Found firmware version %s\n", mgp->fw_version);
471 dev_err(dev, "Driver needs %d.%d\n", MXGEFW_VERSION_MAJOR,
472 MXGEFW_VERSION_MINOR);
478 static int myri10ge_load_hotplug_firmware(struct myri10ge_priv *mgp, u32 * size)
480 unsigned crc, reread_crc;
481 const struct firmware *fw;
482 struct device *dev = &mgp->pdev->dev;
483 struct mcp_gen_header *hdr;
488 if ((status = request_firmware(&fw, mgp->fw_name, dev)) < 0) {
489 dev_err(dev, "Unable to load %s firmware image via hotplug\n",
492 goto abort_with_nothing;
497 if (fw->size >= mgp->sram_size - MYRI10GE_FW_OFFSET ||
498 fw->size < MCP_HEADER_PTR_OFFSET + 4) {
499 dev_err(dev, "Firmware size invalid:%d\n", (int)fw->size);
505 hdr_offset = ntohl(*(__be32 *) (fw->data + MCP_HEADER_PTR_OFFSET));
506 if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > fw->size) {
507 dev_err(dev, "Bad firmware file\n");
511 hdr = (void *)(fw->data + hdr_offset);
513 status = myri10ge_validate_firmware(mgp, hdr);
517 crc = crc32(~0, fw->data, fw->size);
518 for (i = 0; i < fw->size; i += 256) {
519 myri10ge_pio_copy(mgp->sram + MYRI10GE_FW_OFFSET + i,
521 min(256U, (unsigned)(fw->size - i)));
525 /* corruption checking is good for parity recovery and buggy chipset */
526 memcpy_fromio(fw->data, mgp->sram + MYRI10GE_FW_OFFSET, fw->size);
527 reread_crc = crc32(~0, fw->data, fw->size);
528 if (crc != reread_crc) {
529 dev_err(dev, "CRC failed(fw-len=%u), got 0x%x (expect 0x%x)\n",
530 (unsigned)fw->size, reread_crc, crc);
534 *size = (u32) fw->size;
537 release_firmware(fw);
543 static int myri10ge_adopt_running_firmware(struct myri10ge_priv *mgp)
545 struct mcp_gen_header *hdr;
546 struct device *dev = &mgp->pdev->dev;
547 const size_t bytes = sizeof(struct mcp_gen_header);
551 /* find running firmware header */
552 hdr_offset = ntohl(__raw_readl(mgp->sram + MCP_HEADER_PTR_OFFSET));
554 if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > mgp->sram_size) {
555 dev_err(dev, "Running firmware has bad header offset (%d)\n",
560 /* copy header of running firmware from SRAM to host memory to
561 * validate firmware */
562 hdr = kmalloc(bytes, GFP_KERNEL);
564 dev_err(dev, "could not malloc firmware hdr\n");
567 memcpy_fromio(hdr, mgp->sram + hdr_offset, bytes);
568 status = myri10ge_validate_firmware(mgp, hdr);
571 /* check to see if adopted firmware has bug where adopting
572 * it will cause broadcasts to be filtered unless the NIC
573 * is kept in ALLMULTI mode */
574 if (mgp->fw_ver_major == 1 && mgp->fw_ver_minor == 4 &&
575 mgp->fw_ver_tiny >= 4 && mgp->fw_ver_tiny <= 11) {
576 mgp->adopted_rx_filter_bug = 1;
577 dev_warn(dev, "Adopting fw %d.%d.%d: "
578 "working around rx filter bug\n",
579 mgp->fw_ver_major, mgp->fw_ver_minor,
585 static int myri10ge_load_firmware(struct myri10ge_priv *mgp)
587 char __iomem *submit;
589 u32 dma_low, dma_high, size;
593 status = myri10ge_load_hotplug_firmware(mgp, &size);
595 dev_warn(&mgp->pdev->dev, "hotplug firmware loading failed\n");
597 /* Do not attempt to adopt firmware if there
602 status = myri10ge_adopt_running_firmware(mgp);
604 dev_err(&mgp->pdev->dev,
605 "failed to adopt running firmware\n");
608 dev_info(&mgp->pdev->dev,
609 "Successfully adopted running firmware\n");
610 if (mgp->tx.boundary == 4096) {
611 dev_warn(&mgp->pdev->dev,
612 "Using firmware currently running on NIC"
614 dev_warn(&mgp->pdev->dev,
615 "performance consider loading optimized "
617 dev_warn(&mgp->pdev->dev, "via hotplug\n");
620 mgp->fw_name = "adopted";
621 mgp->tx.boundary = 2048;
625 /* clear confirmation addr */
629 /* send a reload command to the bootstrap MCP, and wait for the
630 * response in the confirmation address. The firmware should
631 * write a -1 there to indicate it is alive and well
633 dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus);
634 dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus);
636 buf[0] = htonl(dma_high); /* confirm addr MSW */
637 buf[1] = htonl(dma_low); /* confirm addr LSW */
638 buf[2] = MYRI10GE_NO_CONFIRM_DATA; /* confirm data */
640 /* FIX: All newest firmware should un-protect the bottom of
641 * the sram before handoff. However, the very first interfaces
642 * do not. Therefore the handoff copy must skip the first 8 bytes
644 buf[3] = htonl(MYRI10GE_FW_OFFSET + 8); /* where the code starts */
645 buf[4] = htonl(size - 8); /* length of code */
646 buf[5] = htonl(8); /* where to copy to */
647 buf[6] = htonl(0); /* where to jump to */
649 submit = mgp->sram + MXGEFW_BOOT_HANDOFF;
651 myri10ge_pio_copy(submit, &buf, sizeof(buf));
656 while (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 20) {
660 if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA) {
661 dev_err(&mgp->pdev->dev, "handoff failed\n");
664 dev_info(&mgp->pdev->dev, "handoff confirmed\n");
665 myri10ge_dummy_rdma(mgp, 1);
670 static int myri10ge_update_mac_address(struct myri10ge_priv *mgp, u8 * addr)
672 struct myri10ge_cmd cmd;
675 cmd.data0 = ((addr[0] << 24) | (addr[1] << 16)
676 | (addr[2] << 8) | addr[3]);
678 cmd.data1 = ((addr[4] << 8) | (addr[5]));
680 status = myri10ge_send_cmd(mgp, MXGEFW_SET_MAC_ADDRESS, &cmd, 0);
684 static int myri10ge_change_pause(struct myri10ge_priv *mgp, int pause)
686 struct myri10ge_cmd cmd;
689 ctl = pause ? MXGEFW_ENABLE_FLOW_CONTROL : MXGEFW_DISABLE_FLOW_CONTROL;
690 status = myri10ge_send_cmd(mgp, ctl, &cmd, 0);
694 "myri10ge: %s: Failed to set flow control mode\n",
703 myri10ge_change_promisc(struct myri10ge_priv *mgp, int promisc, int atomic)
705 struct myri10ge_cmd cmd;
708 ctl = promisc ? MXGEFW_ENABLE_PROMISC : MXGEFW_DISABLE_PROMISC;
709 status = myri10ge_send_cmd(mgp, ctl, &cmd, atomic);
711 printk(KERN_ERR "myri10ge: %s: Failed to set promisc mode\n",
715 static int myri10ge_reset(struct myri10ge_priv *mgp)
717 struct myri10ge_cmd cmd;
721 struct page *dmatest_page;
722 dma_addr_t dmatest_bus;
724 /* try to send a reset command to the card to see if it
726 memset(&cmd, 0, sizeof(cmd));
727 status = myri10ge_send_cmd(mgp, MXGEFW_CMD_RESET, &cmd, 0);
729 dev_err(&mgp->pdev->dev, "failed reset\n");
732 dmatest_page = alloc_page(GFP_KERNEL);
735 dmatest_bus = pci_map_page(mgp->pdev, dmatest_page, 0, PAGE_SIZE,
738 /* Now exchange information about interrupts */
740 bytes = myri10ge_max_intr_slots * sizeof(*mgp->rx_done.entry);
741 memset(mgp->rx_done.entry, 0, bytes);
742 cmd.data0 = (u32) bytes;
743 status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_SIZE, &cmd, 0);
744 cmd.data0 = MYRI10GE_LOWPART_TO_U32(mgp->rx_done.bus);
745 cmd.data1 = MYRI10GE_HIGHPART_TO_U32(mgp->rx_done.bus);
746 status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_DMA, &cmd, 0);
749 myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_ACK_OFFSET, &cmd, 0);
750 mgp->irq_claim = (__iomem __be32 *) (mgp->sram + cmd.data0);
751 status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_DEASSERT_OFFSET,
753 mgp->irq_deassert = (__iomem __be32 *) (mgp->sram + cmd.data0);
755 status |= myri10ge_send_cmd
756 (mgp, MXGEFW_CMD_GET_INTR_COAL_DELAY_OFFSET, &cmd, 0);
757 mgp->intr_coal_delay_ptr = (__iomem __be32 *) (mgp->sram + cmd.data0);
759 dev_err(&mgp->pdev->dev, "failed set interrupt parameters\n");
762 put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr);
764 /* Run a small DMA test.
765 * The magic multipliers to the length tell the firmware
766 * to do DMA read, write, or read+write tests. The
767 * results are returned in cmd.data0. The upper 16
768 * bits or the return is the number of transfers completed.
769 * The lower 16 bits is the time in 0.5us ticks that the
770 * transfers took to complete.
773 len = mgp->tx.boundary;
775 cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus);
776 cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus);
777 cmd.data2 = len * 0x10000;
778 status = myri10ge_send_cmd(mgp, MXGEFW_DMA_TEST, &cmd, 0);
780 mgp->read_dma = ((cmd.data0 >> 16) * len * 2) /
781 (cmd.data0 & 0xffff);
783 dev_warn(&mgp->pdev->dev, "DMA read benchmark failed: %d\n",
785 cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus);
786 cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus);
787 cmd.data2 = len * 0x1;
788 status = myri10ge_send_cmd(mgp, MXGEFW_DMA_TEST, &cmd, 0);
790 mgp->write_dma = ((cmd.data0 >> 16) * len * 2) /
791 (cmd.data0 & 0xffff);
793 dev_warn(&mgp->pdev->dev, "DMA write benchmark failed: %d\n",
796 cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus);
797 cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus);
798 cmd.data2 = len * 0x10001;
799 status = myri10ge_send_cmd(mgp, MXGEFW_DMA_TEST, &cmd, 0);
801 mgp->read_write_dma = ((cmd.data0 >> 16) * len * 2 * 2) /
802 (cmd.data0 & 0xffff);
804 dev_warn(&mgp->pdev->dev,
805 "DMA read/write benchmark failed: %d\n", status);
807 pci_unmap_page(mgp->pdev, dmatest_bus, PAGE_SIZE, DMA_BIDIRECTIONAL);
808 put_page(dmatest_page);
810 memset(mgp->rx_done.entry, 0, bytes);
812 /* reset mcp/driver shared state back to 0 */
815 mgp->tx.pkt_start = 0;
816 mgp->tx.pkt_done = 0;
818 mgp->rx_small.cnt = 0;
819 mgp->rx_done.idx = 0;
820 mgp->rx_done.cnt = 0;
821 mgp->link_changes = 0;
822 status = myri10ge_update_mac_address(mgp, mgp->dev->dev_addr);
823 myri10ge_change_promisc(mgp, 0, 0);
824 myri10ge_change_pause(mgp, mgp->pause);
825 if (mgp->adopted_rx_filter_bug)
826 (void)myri10ge_send_cmd(mgp, MXGEFW_ENABLE_ALLMULTI, &cmd, 1);
831 myri10ge_submit_8rx(struct mcp_kreq_ether_recv __iomem * dst,
832 struct mcp_kreq_ether_recv *src)
837 src->addr_low = htonl(DMA_32BIT_MASK);
838 myri10ge_pio_copy(dst, src, 4 * sizeof(*src));
840 myri10ge_pio_copy(dst + 4, src + 4, 4 * sizeof(*src));
843 put_be32(low, &dst->addr_low);
847 static inline void myri10ge_vlan_ip_csum(struct sk_buff *skb, __wsum hw_csum)
849 struct vlan_hdr *vh = (struct vlan_hdr *)(skb->data);
851 if ((skb->protocol == htons(ETH_P_8021Q)) &&
852 (vh->h_vlan_encapsulated_proto == htons(ETH_P_IP) ||
853 vh->h_vlan_encapsulated_proto == htons(ETH_P_IPV6))) {
855 skb->ip_summed = CHECKSUM_COMPLETE;
860 myri10ge_rx_skb_build(struct sk_buff *skb, u8 * va,
861 struct skb_frag_struct *rx_frags, int len, int hlen)
863 struct skb_frag_struct *skb_frags;
865 skb->len = skb->data_len = len;
866 skb->truesize = len + sizeof(struct sk_buff);
867 /* attach the page(s) */
869 skb_frags = skb_shinfo(skb)->frags;
871 memcpy(skb_frags, rx_frags, sizeof(*skb_frags));
872 len -= rx_frags->size;
875 skb_shinfo(skb)->nr_frags++;
878 /* pskb_may_pull is not available in irq context, but
879 * skb_pull() (for ether_pad and eth_type_trans()) requires
880 * the beginning of the packet in skb_headlen(), move it
882 memcpy(skb->data, va, hlen);
883 skb_shinfo(skb)->frags[0].page_offset += hlen;
884 skb_shinfo(skb)->frags[0].size -= hlen;
885 skb->data_len -= hlen;
887 skb_pull(skb, MXGEFW_PAD);
891 myri10ge_alloc_rx_pages(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx,
892 int bytes, int watchdog)
897 if (unlikely(rx->watchdog_needed && !watchdog))
900 /* try to refill entire ring */
901 while (rx->fill_cnt != (rx->cnt + rx->mask + 1)) {
902 idx = rx->fill_cnt & rx->mask;
904 if ((bytes < MYRI10GE_ALLOC_SIZE / 2) &&
905 (rx->page_offset + bytes <= MYRI10GE_ALLOC_SIZE)) {
906 /* we can use part of previous page */
909 /* we need a new page */
911 alloc_pages(GFP_ATOMIC | __GFP_COMP,
912 MYRI10GE_ALLOC_ORDER);
913 if (unlikely(page == NULL)) {
914 if (rx->fill_cnt - rx->cnt < 16)
915 rx->watchdog_needed = 1;
920 rx->bus = pci_map_page(mgp->pdev, page, 0,
924 rx->info[idx].page = rx->page;
925 rx->info[idx].page_offset = rx->page_offset;
926 /* note that this is the address of the start of the
928 pci_unmap_addr_set(&rx->info[idx], bus, rx->bus);
929 rx->shadow[idx].addr_low =
930 htonl(MYRI10GE_LOWPART_TO_U32(rx->bus) + rx->page_offset);
931 rx->shadow[idx].addr_high =
932 htonl(MYRI10GE_HIGHPART_TO_U32(rx->bus));
934 /* start next packet on a cacheline boundary */
935 rx->page_offset += SKB_DATA_ALIGN(bytes);
938 /* copy 8 descriptors to the firmware at a time */
939 if ((idx & 7) == 7) {
940 if (rx->wc_fifo == NULL)
941 myri10ge_submit_8rx(&rx->lanai[idx - 7],
942 &rx->shadow[idx - 7]);
945 myri10ge_pio_copy(rx->wc_fifo,
946 &rx->shadow[idx - 7], 64);
953 myri10ge_unmap_rx_page(struct pci_dev *pdev,
954 struct myri10ge_rx_buffer_state *info, int bytes)
956 /* unmap the recvd page if we're the only or last user of it */
957 if (bytes >= MYRI10GE_ALLOC_SIZE / 2 ||
958 (info->page_offset + 2 * bytes) > MYRI10GE_ALLOC_SIZE) {
959 pci_unmap_page(pdev, (pci_unmap_addr(info, bus)
960 & ~(MYRI10GE_ALLOC_SIZE - 1)),
961 MYRI10GE_ALLOC_SIZE, PCI_DMA_FROMDEVICE);
965 #define MYRI10GE_HLEN 64 /* The number of bytes to copy from a
966 * page into an skb */
969 myri10ge_rx_done(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx,
970 int bytes, int len, __wsum csum)
973 struct skb_frag_struct rx_frags[MYRI10GE_MAX_FRAGS_PER_FRAME];
974 int i, idx, hlen, remainder;
975 struct pci_dev *pdev = mgp->pdev;
976 struct net_device *dev = mgp->dev;
980 idx = rx->cnt & rx->mask;
981 va = page_address(rx->info[idx].page) + rx->info[idx].page_offset;
983 /* Fill skb_frag_struct(s) with data from our receive */
984 for (i = 0, remainder = len; remainder > 0; i++) {
985 myri10ge_unmap_rx_page(pdev, &rx->info[idx], bytes);
986 rx_frags[i].page = rx->info[idx].page;
987 rx_frags[i].page_offset = rx->info[idx].page_offset;
988 if (remainder < MYRI10GE_ALLOC_SIZE)
989 rx_frags[i].size = remainder;
991 rx_frags[i].size = MYRI10GE_ALLOC_SIZE;
993 idx = rx->cnt & rx->mask;
994 remainder -= MYRI10GE_ALLOC_SIZE;
997 hlen = MYRI10GE_HLEN > len ? len : MYRI10GE_HLEN;
999 /* allocate an skb to attach the page(s) to. */
1001 skb = netdev_alloc_skb(dev, MYRI10GE_HLEN + 16);
1002 if (unlikely(skb == NULL)) {
1003 mgp->stats.rx_dropped++;
1006 put_page(rx_frags[i].page);
1011 /* Attach the pages to the skb, and trim off any padding */
1012 myri10ge_rx_skb_build(skb, va, rx_frags, len, hlen);
1013 if (skb_shinfo(skb)->frags[0].size <= 0) {
1014 put_page(skb_shinfo(skb)->frags[0].page);
1015 skb_shinfo(skb)->nr_frags = 0;
1017 skb->protocol = eth_type_trans(skb, dev);
1020 if (mgp->csum_flag) {
1021 if ((skb->protocol == htons(ETH_P_IP)) ||
1022 (skb->protocol == htons(ETH_P_IPV6))) {
1024 skb->ip_summed = CHECKSUM_COMPLETE;
1026 myri10ge_vlan_ip_csum(skb, csum);
1028 netif_receive_skb(skb);
1029 dev->last_rx = jiffies;
1033 static inline void myri10ge_tx_done(struct myri10ge_priv *mgp, int mcp_index)
1035 struct pci_dev *pdev = mgp->pdev;
1036 struct myri10ge_tx_buf *tx = &mgp->tx;
1037 struct sk_buff *skb;
1041 while (tx->pkt_done != mcp_index) {
1042 idx = tx->done & tx->mask;
1043 skb = tx->info[idx].skb;
1046 tx->info[idx].skb = NULL;
1047 if (tx->info[idx].last) {
1049 tx->info[idx].last = 0;
1052 len = pci_unmap_len(&tx->info[idx], len);
1053 pci_unmap_len_set(&tx->info[idx], len, 0);
1055 mgp->stats.tx_bytes += skb->len;
1056 mgp->stats.tx_packets++;
1057 dev_kfree_skb_irq(skb);
1059 pci_unmap_single(pdev,
1060 pci_unmap_addr(&tx->info[idx],
1065 pci_unmap_page(pdev,
1066 pci_unmap_addr(&tx->info[idx],
1071 /* limit potential for livelock by only handling
1072 * 2 full tx rings per call */
1073 if (unlikely(++limit > 2 * tx->mask))
1076 /* start the queue if we've stopped it */
1077 if (netif_queue_stopped(mgp->dev)
1078 && tx->req - tx->done < (tx->mask >> 1)) {
1080 netif_wake_queue(mgp->dev);
1084 static inline void myri10ge_clean_rx_done(struct myri10ge_priv *mgp, int *limit)
1086 struct myri10ge_rx_done *rx_done = &mgp->rx_done;
1087 unsigned long rx_bytes = 0;
1088 unsigned long rx_packets = 0;
1089 unsigned long rx_ok;
1091 int idx = rx_done->idx;
1092 int cnt = rx_done->cnt;
1096 while (rx_done->entry[idx].length != 0 && *limit != 0) {
1097 length = ntohs(rx_done->entry[idx].length);
1098 rx_done->entry[idx].length = 0;
1099 checksum = csum_unfold(rx_done->entry[idx].checksum);
1100 if (length <= mgp->small_bytes)
1101 rx_ok = myri10ge_rx_done(mgp, &mgp->rx_small,
1105 rx_ok = myri10ge_rx_done(mgp, &mgp->rx_big,
1108 rx_packets += rx_ok;
1109 rx_bytes += rx_ok * (unsigned long)length;
1111 idx = cnt & (myri10ge_max_intr_slots - 1);
1113 /* limit potential for livelock by only handling a
1114 * limited number of frames. */
1119 mgp->stats.rx_packets += rx_packets;
1120 mgp->stats.rx_bytes += rx_bytes;
1122 /* restock receive rings if needed */
1123 if (mgp->rx_small.fill_cnt - mgp->rx_small.cnt < myri10ge_fill_thresh)
1124 myri10ge_alloc_rx_pages(mgp, &mgp->rx_small,
1125 mgp->small_bytes + MXGEFW_PAD, 0);
1126 if (mgp->rx_big.fill_cnt - mgp->rx_big.cnt < myri10ge_fill_thresh)
1127 myri10ge_alloc_rx_pages(mgp, &mgp->rx_big, mgp->big_bytes, 0);
1131 static inline void myri10ge_check_statblock(struct myri10ge_priv *mgp)
1133 struct mcp_irq_data *stats = mgp->fw_stats;
1135 if (unlikely(stats->stats_updated)) {
1136 if (mgp->link_state != stats->link_up) {
1137 mgp->link_state = stats->link_up;
1138 if (mgp->link_state) {
1139 if (netif_msg_link(mgp))
1141 "myri10ge: %s: link up\n",
1143 netif_carrier_on(mgp->dev);
1144 mgp->link_changes++;
1146 if (netif_msg_link(mgp))
1148 "myri10ge: %s: link down\n",
1150 netif_carrier_off(mgp->dev);
1151 mgp->link_changes++;
1154 if (mgp->rdma_tags_available !=
1155 ntohl(mgp->fw_stats->rdma_tags_available)) {
1156 mgp->rdma_tags_available =
1157 ntohl(mgp->fw_stats->rdma_tags_available);
1158 printk(KERN_WARNING "myri10ge: %s: RDMA timed out! "
1159 "%d tags left\n", mgp->dev->name,
1160 mgp->rdma_tags_available);
1162 mgp->down_cnt += stats->link_down;
1163 if (stats->link_down)
1164 wake_up(&mgp->down_wq);
1168 static int myri10ge_poll(struct net_device *netdev, int *budget)
1170 struct myri10ge_priv *mgp = netdev_priv(netdev);
1171 struct myri10ge_rx_done *rx_done = &mgp->rx_done;
1172 int limit, orig_limit, work_done;
1174 /* process as many rx events as NAPI will allow */
1175 limit = min(*budget, netdev->quota);
1177 myri10ge_clean_rx_done(mgp, &limit);
1178 work_done = orig_limit - limit;
1179 *budget -= work_done;
1180 netdev->quota -= work_done;
1182 if (rx_done->entry[rx_done->idx].length == 0 || !netif_running(netdev)) {
1183 netif_rx_complete(netdev);
1184 put_be32(htonl(3), mgp->irq_claim);
1190 static irqreturn_t myri10ge_intr(int irq, void *arg)
1192 struct myri10ge_priv *mgp = arg;
1193 struct mcp_irq_data *stats = mgp->fw_stats;
1194 struct myri10ge_tx_buf *tx = &mgp->tx;
1195 u32 send_done_count;
1198 /* make sure it is our IRQ, and that the DMA has finished */
1199 if (unlikely(!stats->valid))
1202 /* low bit indicates receives are present, so schedule
1203 * napi poll handler */
1204 if (stats->valid & 1)
1205 netif_rx_schedule(mgp->dev);
1207 if (!mgp->msi_enabled) {
1208 put_be32(0, mgp->irq_deassert);
1209 if (!myri10ge_deassert_wait)
1215 /* Wait for IRQ line to go low, if using INTx */
1219 /* check for transmit completes and receives */
1220 send_done_count = ntohl(stats->send_done_count);
1221 if (send_done_count != tx->pkt_done)
1222 myri10ge_tx_done(mgp, (int)send_done_count);
1223 if (unlikely(i > myri10ge_max_irq_loops)) {
1224 printk(KERN_WARNING "myri10ge: %s: irq stuck?\n",
1227 schedule_work(&mgp->watchdog_work);
1229 if (likely(stats->valid == 0))
1235 myri10ge_check_statblock(mgp);
1237 put_be32(htonl(3), mgp->irq_claim + 1);
1238 return (IRQ_HANDLED);
1242 myri10ge_get_settings(struct net_device *netdev, struct ethtool_cmd *cmd)
1244 cmd->autoneg = AUTONEG_DISABLE;
1245 cmd->speed = SPEED_10000;
1246 cmd->duplex = DUPLEX_FULL;
1251 myri10ge_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info)
1253 struct myri10ge_priv *mgp = netdev_priv(netdev);
1255 strlcpy(info->driver, "myri10ge", sizeof(info->driver));
1256 strlcpy(info->version, MYRI10GE_VERSION_STR, sizeof(info->version));
1257 strlcpy(info->fw_version, mgp->fw_version, sizeof(info->fw_version));
1258 strlcpy(info->bus_info, pci_name(mgp->pdev), sizeof(info->bus_info));
1262 myri10ge_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal)
1264 struct myri10ge_priv *mgp = netdev_priv(netdev);
1265 coal->rx_coalesce_usecs = mgp->intr_coal_delay;
1270 myri10ge_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal)
1272 struct myri10ge_priv *mgp = netdev_priv(netdev);
1274 mgp->intr_coal_delay = coal->rx_coalesce_usecs;
1275 put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr);
1280 myri10ge_get_pauseparam(struct net_device *netdev,
1281 struct ethtool_pauseparam *pause)
1283 struct myri10ge_priv *mgp = netdev_priv(netdev);
1286 pause->rx_pause = mgp->pause;
1287 pause->tx_pause = mgp->pause;
1291 myri10ge_set_pauseparam(struct net_device *netdev,
1292 struct ethtool_pauseparam *pause)
1294 struct myri10ge_priv *mgp = netdev_priv(netdev);
1296 if (pause->tx_pause != mgp->pause)
1297 return myri10ge_change_pause(mgp, pause->tx_pause);
1298 if (pause->rx_pause != mgp->pause)
1299 return myri10ge_change_pause(mgp, pause->tx_pause);
1300 if (pause->autoneg != 0)
1306 myri10ge_get_ringparam(struct net_device *netdev,
1307 struct ethtool_ringparam *ring)
1309 struct myri10ge_priv *mgp = netdev_priv(netdev);
1311 ring->rx_mini_max_pending = mgp->rx_small.mask + 1;
1312 ring->rx_max_pending = mgp->rx_big.mask + 1;
1313 ring->rx_jumbo_max_pending = 0;
1314 ring->tx_max_pending = mgp->rx_small.mask + 1;
1315 ring->rx_mini_pending = ring->rx_mini_max_pending;
1316 ring->rx_pending = ring->rx_max_pending;
1317 ring->rx_jumbo_pending = ring->rx_jumbo_max_pending;
1318 ring->tx_pending = ring->tx_max_pending;
1321 static u32 myri10ge_get_rx_csum(struct net_device *netdev)
1323 struct myri10ge_priv *mgp = netdev_priv(netdev);
1330 static int myri10ge_set_rx_csum(struct net_device *netdev, u32 csum_enabled)
1332 struct myri10ge_priv *mgp = netdev_priv(netdev);
1334 mgp->csum_flag = MXGEFW_FLAGS_CKSUM;
1340 static const char myri10ge_gstrings_stats[][ETH_GSTRING_LEN] = {
1341 "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
1342 "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
1343 "rx_length_errors", "rx_over_errors", "rx_crc_errors",
1344 "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
1345 "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
1346 "tx_heartbeat_errors", "tx_window_errors",
1347 /* device-specific stats */
1348 "tx_boundary", "WC", "irq", "MSI",
1349 "read_dma_bw_MBs", "write_dma_bw_MBs", "read_write_dma_bw_MBs",
1350 "serial_number", "tx_pkt_start", "tx_pkt_done",
1351 "tx_req", "tx_done", "rx_small_cnt", "rx_big_cnt",
1352 "wake_queue", "stop_queue", "watchdog_resets", "tx_linearized",
1353 "link_changes", "link_up", "dropped_link_overflow",
1354 "dropped_link_error_or_filtered", "dropped_multicast_filtered",
1355 "dropped_runt", "dropped_overrun", "dropped_no_small_buffer",
1356 "dropped_no_big_buffer"
1359 #define MYRI10GE_NET_STATS_LEN 21
1360 #define MYRI10GE_STATS_LEN sizeof(myri10ge_gstrings_stats) / ETH_GSTRING_LEN
1363 myri10ge_get_strings(struct net_device *netdev, u32 stringset, u8 * data)
1365 switch (stringset) {
1367 memcpy(data, *myri10ge_gstrings_stats,
1368 sizeof(myri10ge_gstrings_stats));
1373 static int myri10ge_get_stats_count(struct net_device *netdev)
1375 return MYRI10GE_STATS_LEN;
1379 myri10ge_get_ethtool_stats(struct net_device *netdev,
1380 struct ethtool_stats *stats, u64 * data)
1382 struct myri10ge_priv *mgp = netdev_priv(netdev);
1385 for (i = 0; i < MYRI10GE_NET_STATS_LEN; i++)
1386 data[i] = ((unsigned long *)&mgp->stats)[i];
1388 data[i++] = (unsigned int)mgp->tx.boundary;
1389 data[i++] = (unsigned int)mgp->wc_enabled;
1390 data[i++] = (unsigned int)mgp->pdev->irq;
1391 data[i++] = (unsigned int)mgp->msi_enabled;
1392 data[i++] = (unsigned int)mgp->read_dma;
1393 data[i++] = (unsigned int)mgp->write_dma;
1394 data[i++] = (unsigned int)mgp->read_write_dma;
1395 data[i++] = (unsigned int)mgp->serial_number;
1396 data[i++] = (unsigned int)mgp->tx.pkt_start;
1397 data[i++] = (unsigned int)mgp->tx.pkt_done;
1398 data[i++] = (unsigned int)mgp->tx.req;
1399 data[i++] = (unsigned int)mgp->tx.done;
1400 data[i++] = (unsigned int)mgp->rx_small.cnt;
1401 data[i++] = (unsigned int)mgp->rx_big.cnt;
1402 data[i++] = (unsigned int)mgp->wake_queue;
1403 data[i++] = (unsigned int)mgp->stop_queue;
1404 data[i++] = (unsigned int)mgp->watchdog_resets;
1405 data[i++] = (unsigned int)mgp->tx_linearized;
1406 data[i++] = (unsigned int)mgp->link_changes;
1407 data[i++] = (unsigned int)ntohl(mgp->fw_stats->link_up);
1408 data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_link_overflow);
1410 (unsigned int)ntohl(mgp->fw_stats->dropped_link_error_or_filtered);
1412 (unsigned int)ntohl(mgp->fw_stats->dropped_multicast_filtered);
1413 data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_runt);
1414 data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_overrun);
1415 data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_no_small_buffer);
1416 data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_no_big_buffer);
1419 static void myri10ge_set_msglevel(struct net_device *netdev, u32 value)
1421 struct myri10ge_priv *mgp = netdev_priv(netdev);
1422 mgp->msg_enable = value;
1425 static u32 myri10ge_get_msglevel(struct net_device *netdev)
1427 struct myri10ge_priv *mgp = netdev_priv(netdev);
1428 return mgp->msg_enable;
1431 static const struct ethtool_ops myri10ge_ethtool_ops = {
1432 .get_settings = myri10ge_get_settings,
1433 .get_drvinfo = myri10ge_get_drvinfo,
1434 .get_coalesce = myri10ge_get_coalesce,
1435 .set_coalesce = myri10ge_set_coalesce,
1436 .get_pauseparam = myri10ge_get_pauseparam,
1437 .set_pauseparam = myri10ge_set_pauseparam,
1438 .get_ringparam = myri10ge_get_ringparam,
1439 .get_rx_csum = myri10ge_get_rx_csum,
1440 .set_rx_csum = myri10ge_set_rx_csum,
1441 .get_tx_csum = ethtool_op_get_tx_csum,
1442 .set_tx_csum = ethtool_op_set_tx_hw_csum,
1443 .get_sg = ethtool_op_get_sg,
1444 .set_sg = ethtool_op_set_sg,
1445 .get_tso = ethtool_op_get_tso,
1446 .set_tso = ethtool_op_set_tso,
1447 .get_strings = myri10ge_get_strings,
1448 .get_stats_count = myri10ge_get_stats_count,
1449 .get_ethtool_stats = myri10ge_get_ethtool_stats,
1450 .set_msglevel = myri10ge_set_msglevel,
1451 .get_msglevel = myri10ge_get_msglevel
1454 static int myri10ge_allocate_rings(struct net_device *dev)
1456 struct myri10ge_priv *mgp;
1457 struct myri10ge_cmd cmd;
1458 int tx_ring_size, rx_ring_size;
1459 int tx_ring_entries, rx_ring_entries;
1463 mgp = netdev_priv(dev);
1465 /* get ring sizes */
1467 status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_RING_SIZE, &cmd, 0);
1468 tx_ring_size = cmd.data0;
1469 status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_RX_RING_SIZE, &cmd, 0);
1472 rx_ring_size = cmd.data0;
1474 tx_ring_entries = tx_ring_size / sizeof(struct mcp_kreq_ether_send);
1475 rx_ring_entries = rx_ring_size / sizeof(struct mcp_dma_addr);
1476 mgp->tx.mask = tx_ring_entries - 1;
1477 mgp->rx_small.mask = mgp->rx_big.mask = rx_ring_entries - 1;
1481 /* allocate the host shadow rings */
1483 bytes = 8 + (MYRI10GE_MAX_SEND_DESC_TSO + 4)
1484 * sizeof(*mgp->tx.req_list);
1485 mgp->tx.req_bytes = kzalloc(bytes, GFP_KERNEL);
1486 if (mgp->tx.req_bytes == NULL)
1487 goto abort_with_nothing;
1489 /* ensure req_list entries are aligned to 8 bytes */
1490 mgp->tx.req_list = (struct mcp_kreq_ether_send *)
1491 ALIGN((unsigned long)mgp->tx.req_bytes, 8);
1493 bytes = rx_ring_entries * sizeof(*mgp->rx_small.shadow);
1494 mgp->rx_small.shadow = kzalloc(bytes, GFP_KERNEL);
1495 if (mgp->rx_small.shadow == NULL)
1496 goto abort_with_tx_req_bytes;
1498 bytes = rx_ring_entries * sizeof(*mgp->rx_big.shadow);
1499 mgp->rx_big.shadow = kzalloc(bytes, GFP_KERNEL);
1500 if (mgp->rx_big.shadow == NULL)
1501 goto abort_with_rx_small_shadow;
1503 /* allocate the host info rings */
1505 bytes = tx_ring_entries * sizeof(*mgp->tx.info);
1506 mgp->tx.info = kzalloc(bytes, GFP_KERNEL);
1507 if (mgp->tx.info == NULL)
1508 goto abort_with_rx_big_shadow;
1510 bytes = rx_ring_entries * sizeof(*mgp->rx_small.info);
1511 mgp->rx_small.info = kzalloc(bytes, GFP_KERNEL);
1512 if (mgp->rx_small.info == NULL)
1513 goto abort_with_tx_info;
1515 bytes = rx_ring_entries * sizeof(*mgp->rx_big.info);
1516 mgp->rx_big.info = kzalloc(bytes, GFP_KERNEL);
1517 if (mgp->rx_big.info == NULL)
1518 goto abort_with_rx_small_info;
1520 /* Fill the receive rings */
1521 mgp->rx_big.cnt = 0;
1522 mgp->rx_small.cnt = 0;
1523 mgp->rx_big.fill_cnt = 0;
1524 mgp->rx_small.fill_cnt = 0;
1525 mgp->rx_small.page_offset = MYRI10GE_ALLOC_SIZE;
1526 mgp->rx_big.page_offset = MYRI10GE_ALLOC_SIZE;
1527 mgp->rx_small.watchdog_needed = 0;
1528 mgp->rx_big.watchdog_needed = 0;
1529 myri10ge_alloc_rx_pages(mgp, &mgp->rx_small,
1530 mgp->small_bytes + MXGEFW_PAD, 0);
1532 if (mgp->rx_small.fill_cnt < mgp->rx_small.mask + 1) {
1533 printk(KERN_ERR "myri10ge: %s: alloced only %d small bufs\n",
1534 dev->name, mgp->rx_small.fill_cnt);
1535 goto abort_with_rx_small_ring;
1538 myri10ge_alloc_rx_pages(mgp, &mgp->rx_big, mgp->big_bytes, 0);
1539 if (mgp->rx_big.fill_cnt < mgp->rx_big.mask + 1) {
1540 printk(KERN_ERR "myri10ge: %s: alloced only %d big bufs\n",
1541 dev->name, mgp->rx_big.fill_cnt);
1542 goto abort_with_rx_big_ring;
1547 abort_with_rx_big_ring:
1548 for (i = mgp->rx_big.cnt; i < mgp->rx_big.fill_cnt; i++) {
1549 int idx = i & mgp->rx_big.mask;
1550 myri10ge_unmap_rx_page(mgp->pdev, &mgp->rx_big.info[idx],
1552 put_page(mgp->rx_big.info[idx].page);
1555 abort_with_rx_small_ring:
1556 for (i = mgp->rx_small.cnt; i < mgp->rx_small.fill_cnt; i++) {
1557 int idx = i & mgp->rx_small.mask;
1558 myri10ge_unmap_rx_page(mgp->pdev, &mgp->rx_small.info[idx],
1559 mgp->small_bytes + MXGEFW_PAD);
1560 put_page(mgp->rx_small.info[idx].page);
1563 kfree(mgp->rx_big.info);
1565 abort_with_rx_small_info:
1566 kfree(mgp->rx_small.info);
1569 kfree(mgp->tx.info);
1571 abort_with_rx_big_shadow:
1572 kfree(mgp->rx_big.shadow);
1574 abort_with_rx_small_shadow:
1575 kfree(mgp->rx_small.shadow);
1577 abort_with_tx_req_bytes:
1578 kfree(mgp->tx.req_bytes);
1579 mgp->tx.req_bytes = NULL;
1580 mgp->tx.req_list = NULL;
1586 static void myri10ge_free_rings(struct net_device *dev)
1588 struct myri10ge_priv *mgp;
1589 struct sk_buff *skb;
1590 struct myri10ge_tx_buf *tx;
1593 mgp = netdev_priv(dev);
1595 for (i = mgp->rx_big.cnt; i < mgp->rx_big.fill_cnt; i++) {
1596 idx = i & mgp->rx_big.mask;
1597 if (i == mgp->rx_big.fill_cnt - 1)
1598 mgp->rx_big.info[idx].page_offset = MYRI10GE_ALLOC_SIZE;
1599 myri10ge_unmap_rx_page(mgp->pdev, &mgp->rx_big.info[idx],
1601 put_page(mgp->rx_big.info[idx].page);
1604 for (i = mgp->rx_small.cnt; i < mgp->rx_small.fill_cnt; i++) {
1605 idx = i & mgp->rx_small.mask;
1606 if (i == mgp->rx_small.fill_cnt - 1)
1607 mgp->rx_small.info[idx].page_offset =
1608 MYRI10GE_ALLOC_SIZE;
1609 myri10ge_unmap_rx_page(mgp->pdev, &mgp->rx_small.info[idx],
1610 mgp->small_bytes + MXGEFW_PAD);
1611 put_page(mgp->rx_small.info[idx].page);
1614 while (tx->done != tx->req) {
1615 idx = tx->done & tx->mask;
1616 skb = tx->info[idx].skb;
1619 tx->info[idx].skb = NULL;
1621 len = pci_unmap_len(&tx->info[idx], len);
1622 pci_unmap_len_set(&tx->info[idx], len, 0);
1624 mgp->stats.tx_dropped++;
1625 dev_kfree_skb_any(skb);
1627 pci_unmap_single(mgp->pdev,
1628 pci_unmap_addr(&tx->info[idx],
1633 pci_unmap_page(mgp->pdev,
1634 pci_unmap_addr(&tx->info[idx],
1639 kfree(mgp->rx_big.info);
1641 kfree(mgp->rx_small.info);
1643 kfree(mgp->tx.info);
1645 kfree(mgp->rx_big.shadow);
1647 kfree(mgp->rx_small.shadow);
1649 kfree(mgp->tx.req_bytes);
1650 mgp->tx.req_bytes = NULL;
1651 mgp->tx.req_list = NULL;
1654 static int myri10ge_request_irq(struct myri10ge_priv *mgp)
1656 struct pci_dev *pdev = mgp->pdev;
1660 status = pci_enable_msi(pdev);
1663 "Error %d setting up MSI; falling back to xPIC\n",
1666 mgp->msi_enabled = 1;
1668 mgp->msi_enabled = 0;
1670 status = request_irq(pdev->irq, myri10ge_intr, IRQF_SHARED,
1671 mgp->dev->name, mgp);
1673 dev_err(&pdev->dev, "failed to allocate IRQ\n");
1674 if (mgp->msi_enabled)
1675 pci_disable_msi(pdev);
1680 static void myri10ge_free_irq(struct myri10ge_priv *mgp)
1682 struct pci_dev *pdev = mgp->pdev;
1684 free_irq(pdev->irq, mgp);
1685 if (mgp->msi_enabled)
1686 pci_disable_msi(pdev);
1689 static int myri10ge_open(struct net_device *dev)
1691 struct myri10ge_priv *mgp;
1692 struct myri10ge_cmd cmd;
1693 int status, big_pow2;
1695 mgp = netdev_priv(dev);
1697 if (mgp->running != MYRI10GE_ETH_STOPPED)
1700 mgp->running = MYRI10GE_ETH_STARTING;
1701 status = myri10ge_reset(mgp);
1703 printk(KERN_ERR "myri10ge: %s: failed reset\n", dev->name);
1704 goto abort_with_nothing;
1707 status = myri10ge_request_irq(mgp);
1709 goto abort_with_nothing;
1711 /* decide what small buffer size to use. For good TCP rx
1712 * performance, it is important to not receive 1514 byte
1713 * frames into jumbo buffers, as it confuses the socket buffer
1714 * accounting code, leading to drops and erratic performance.
1717 if (dev->mtu <= ETH_DATA_LEN)
1718 /* enough for a TCP header */
1719 mgp->small_bytes = (128 > SMP_CACHE_BYTES)
1720 ? (128 - MXGEFW_PAD)
1721 : (SMP_CACHE_BYTES - MXGEFW_PAD);
1723 /* enough for a vlan encapsulated ETH_DATA_LEN frame */
1724 mgp->small_bytes = VLAN_ETH_FRAME_LEN;
1726 /* Override the small buffer size? */
1727 if (myri10ge_small_bytes > 0)
1728 mgp->small_bytes = myri10ge_small_bytes;
1730 /* get the lanai pointers to the send and receive rings */
1732 status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_OFFSET, &cmd, 0);
1734 (struct mcp_kreq_ether_send __iomem *)(mgp->sram + cmd.data0);
1737 myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SMALL_RX_OFFSET, &cmd, 0);
1738 mgp->rx_small.lanai =
1739 (struct mcp_kreq_ether_recv __iomem *)(mgp->sram + cmd.data0);
1741 status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_BIG_RX_OFFSET, &cmd, 0);
1743 (struct mcp_kreq_ether_recv __iomem *)(mgp->sram + cmd.data0);
1747 "myri10ge: %s: failed to get ring sizes or locations\n",
1749 mgp->running = MYRI10GE_ETH_STOPPED;
1750 goto abort_with_irq;
1753 if (myri10ge_wcfifo && mgp->wc_enabled) {
1754 mgp->tx.wc_fifo = (u8 __iomem *) mgp->sram + MXGEFW_ETH_SEND_4;
1755 mgp->rx_small.wc_fifo =
1756 (u8 __iomem *) mgp->sram + MXGEFW_ETH_RECV_SMALL;
1757 mgp->rx_big.wc_fifo =
1758 (u8 __iomem *) mgp->sram + MXGEFW_ETH_RECV_BIG;
1760 mgp->tx.wc_fifo = NULL;
1761 mgp->rx_small.wc_fifo = NULL;
1762 mgp->rx_big.wc_fifo = NULL;
1765 /* Firmware needs the big buff size as a power of 2. Lie and
1766 * tell him the buffer is larger, because we only use 1
1767 * buffer/pkt, and the mtu will prevent overruns.
1769 big_pow2 = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD;
1770 if (big_pow2 < MYRI10GE_ALLOC_SIZE / 2) {
1771 while ((big_pow2 & (big_pow2 - 1)) != 0)
1773 mgp->big_bytes = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD;
1775 big_pow2 = MYRI10GE_ALLOC_SIZE;
1776 mgp->big_bytes = big_pow2;
1779 status = myri10ge_allocate_rings(dev);
1781 goto abort_with_irq;
1783 /* now give firmware buffers sizes, and MTU */
1784 cmd.data0 = dev->mtu + ETH_HLEN + VLAN_HLEN;
1785 status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_MTU, &cmd, 0);
1786 cmd.data0 = mgp->small_bytes;
1788 myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_SMALL_BUFFER_SIZE, &cmd, 0);
1789 cmd.data0 = big_pow2;
1791 myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_BIG_BUFFER_SIZE, &cmd, 0);
1793 printk(KERN_ERR "myri10ge: %s: Couldn't set buffer sizes\n",
1795 goto abort_with_rings;
1798 cmd.data0 = MYRI10GE_LOWPART_TO_U32(mgp->fw_stats_bus);
1799 cmd.data1 = MYRI10GE_HIGHPART_TO_U32(mgp->fw_stats_bus);
1800 cmd.data2 = sizeof(struct mcp_irq_data);
1801 status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_STATS_DMA_V2, &cmd, 0);
1802 if (status == -ENOSYS) {
1803 dma_addr_t bus = mgp->fw_stats_bus;
1804 bus += offsetof(struct mcp_irq_data, send_done_count);
1805 cmd.data0 = MYRI10GE_LOWPART_TO_U32(bus);
1806 cmd.data1 = MYRI10GE_HIGHPART_TO_U32(bus);
1807 status = myri10ge_send_cmd(mgp,
1808 MXGEFW_CMD_SET_STATS_DMA_OBSOLETE,
1810 /* Firmware cannot support multicast without STATS_DMA_V2 */
1811 mgp->fw_multicast_support = 0;
1813 mgp->fw_multicast_support = 1;
1816 printk(KERN_ERR "myri10ge: %s: Couldn't set stats DMA\n",
1818 goto abort_with_rings;
1821 mgp->link_state = htonl(~0U);
1822 mgp->rdma_tags_available = 15;
1824 netif_poll_enable(mgp->dev); /* must happen prior to any irq */
1826 status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_UP, &cmd, 0);
1828 printk(KERN_ERR "myri10ge: %s: Couldn't bring up link\n",
1830 goto abort_with_rings;
1833 mgp->wake_queue = 0;
1834 mgp->stop_queue = 0;
1835 mgp->running = MYRI10GE_ETH_RUNNING;
1836 mgp->watchdog_timer.expires = jiffies + myri10ge_watchdog_timeout * HZ;
1837 add_timer(&mgp->watchdog_timer);
1838 netif_wake_queue(dev);
1842 myri10ge_free_rings(dev);
1845 myri10ge_free_irq(mgp);
1848 mgp->running = MYRI10GE_ETH_STOPPED;
1852 static int myri10ge_close(struct net_device *dev)
1854 struct myri10ge_priv *mgp;
1855 struct myri10ge_cmd cmd;
1856 int status, old_down_cnt;
1858 mgp = netdev_priv(dev);
1860 if (mgp->running != MYRI10GE_ETH_RUNNING)
1863 if (mgp->tx.req_bytes == NULL)
1866 del_timer_sync(&mgp->watchdog_timer);
1867 mgp->running = MYRI10GE_ETH_STOPPING;
1868 netif_poll_disable(mgp->dev);
1869 netif_carrier_off(dev);
1870 netif_stop_queue(dev);
1871 old_down_cnt = mgp->down_cnt;
1873 status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_DOWN, &cmd, 0);
1875 printk(KERN_ERR "myri10ge: %s: Couldn't bring down link\n",
1878 wait_event_timeout(mgp->down_wq, old_down_cnt != mgp->down_cnt, HZ);
1879 if (old_down_cnt == mgp->down_cnt)
1880 printk(KERN_ERR "myri10ge: %s never got down irq\n", dev->name);
1882 netif_tx_disable(dev);
1883 myri10ge_free_irq(mgp);
1884 myri10ge_free_rings(dev);
1886 mgp->running = MYRI10GE_ETH_STOPPED;
1890 /* copy an array of struct mcp_kreq_ether_send's to the mcp. Copy
1891 * backwards one at a time and handle ring wraps */
1894 myri10ge_submit_req_backwards(struct myri10ge_tx_buf *tx,
1895 struct mcp_kreq_ether_send *src, int cnt)
1897 int idx, starting_slot;
1898 starting_slot = tx->req;
1901 idx = (starting_slot + cnt) & tx->mask;
1902 myri10ge_pio_copy(&tx->lanai[idx], &src[cnt], sizeof(*src));
1908 * copy an array of struct mcp_kreq_ether_send's to the mcp. Copy
1909 * at most 32 bytes at a time, so as to avoid involving the software
1910 * pio handler in the nic. We re-write the first segment's flags
1911 * to mark them valid only after writing the entire chain.
1915 myri10ge_submit_req(struct myri10ge_tx_buf *tx, struct mcp_kreq_ether_send *src,
1919 struct mcp_kreq_ether_send __iomem *dstp, *dst;
1920 struct mcp_kreq_ether_send *srcp;
1923 idx = tx->req & tx->mask;
1925 last_flags = src->flags;
1928 dst = dstp = &tx->lanai[idx];
1931 if ((idx + cnt) < tx->mask) {
1932 for (i = 0; i < (cnt - 1); i += 2) {
1933 myri10ge_pio_copy(dstp, srcp, 2 * sizeof(*src));
1934 mb(); /* force write every 32 bytes */
1939 /* submit all but the first request, and ensure
1940 * that it is submitted below */
1941 myri10ge_submit_req_backwards(tx, src, cnt);
1945 /* submit the first request */
1946 myri10ge_pio_copy(dstp, srcp, sizeof(*src));
1947 mb(); /* barrier before setting valid flag */
1950 /* re-write the last 32-bits with the valid flags */
1951 src->flags = last_flags;
1952 put_be32(*((__be32 *) src + 3), (__be32 __iomem *) dst + 3);
1958 myri10ge_submit_req_wc(struct myri10ge_tx_buf *tx,
1959 struct mcp_kreq_ether_send *src, int cnt)
1964 myri10ge_pio_copy(tx->wc_fifo, src, 64);
1970 /* pad it to 64 bytes. The src is 64 bytes bigger than it
1971 * needs to be so that we don't overrun it */
1972 myri10ge_pio_copy(tx->wc_fifo + MXGEFW_ETH_SEND_OFFSET(cnt),
1979 * Transmit a packet. We need to split the packet so that a single
1980 * segment does not cross myri10ge->tx.boundary, so this makes segment
1981 * counting tricky. So rather than try to count segments up front, we
1982 * just give up if there are too few segments to hold a reasonably
1983 * fragmented packet currently available. If we run
1984 * out of segments while preparing a packet for DMA, we just linearize
1988 static int myri10ge_xmit(struct sk_buff *skb, struct net_device *dev)
1990 struct myri10ge_priv *mgp = netdev_priv(dev);
1991 struct mcp_kreq_ether_send *req;
1992 struct myri10ge_tx_buf *tx = &mgp->tx;
1993 struct skb_frag_struct *frag;
1996 __be32 high_swapped;
1998 int idx, last_idx, avail, frag_cnt, frag_idx, count, mss, max_segments;
1999 u16 pseudo_hdr_offset, cksum_offset;
2000 int cum_len, seglen, boundary, rdma_count;
2005 avail = tx->mask - 1 - (tx->req - tx->done);
2008 max_segments = MXGEFW_MAX_SEND_DESC;
2010 if (skb->len > (dev->mtu + ETH_HLEN)) {
2011 mss = skb_shinfo(skb)->gso_size;
2013 max_segments = MYRI10GE_MAX_SEND_DESC_TSO;
2016 if ((unlikely(avail < max_segments))) {
2017 /* we are out of transmit resources */
2019 netif_stop_queue(dev);
2023 /* Setup checksum offloading, if needed */
2025 pseudo_hdr_offset = 0;
2027 flags = (MXGEFW_FLAGS_NO_TSO | MXGEFW_FLAGS_FIRST);
2028 if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
2029 cksum_offset = (skb->h.raw - skb->data);
2030 pseudo_hdr_offset = cksum_offset + skb->csum_offset;
2031 /* If the headers are excessively large, then we must
2032 * fall back to a software checksum */
2033 if (unlikely(cksum_offset > 255 || pseudo_hdr_offset > 127)) {
2034 if (skb_checksum_help(skb))
2037 pseudo_hdr_offset = 0;
2039 odd_flag = MXGEFW_FLAGS_ALIGN_ODD;
2040 flags |= MXGEFW_FLAGS_CKSUM;
2046 if (mss) { /* TSO */
2047 /* this removes any CKSUM flag from before */
2048 flags = (MXGEFW_FLAGS_TSO_HDR | MXGEFW_FLAGS_FIRST);
2050 /* negative cum_len signifies to the
2051 * send loop that we are still in the
2052 * header portion of the TSO packet.
2053 * TSO header must be at most 134 bytes long */
2054 cum_len = -((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
2056 /* for TSO, pseudo_hdr_offset holds mss.
2057 * The firmware figures out where to put
2058 * the checksum by parsing the header. */
2059 pseudo_hdr_offset = mss;
2061 /* Mark small packets, and pad out tiny packets */
2062 if (skb->len <= MXGEFW_SEND_SMALL_SIZE) {
2063 flags |= MXGEFW_FLAGS_SMALL;
2065 /* pad frames to at least ETH_ZLEN bytes */
2066 if (unlikely(skb->len < ETH_ZLEN)) {
2067 if (skb_padto(skb, ETH_ZLEN)) {
2068 /* The packet is gone, so we must
2070 mgp->stats.tx_dropped += 1;
2073 /* adjust the len to account for the zero pad
2074 * so that the nic can know how long it is */
2075 skb->len = ETH_ZLEN;
2079 /* map the skb for DMA */
2080 len = skb->len - skb->data_len;
2081 idx = tx->req & tx->mask;
2082 tx->info[idx].skb = skb;
2083 bus = pci_map_single(mgp->pdev, skb->data, len, PCI_DMA_TODEVICE);
2084 pci_unmap_addr_set(&tx->info[idx], bus, bus);
2085 pci_unmap_len_set(&tx->info[idx], len, len);
2087 frag_cnt = skb_shinfo(skb)->nr_frags;
2092 /* "rdma_count" is the number of RDMAs belonging to the
2093 * current packet BEFORE the current send request. For
2094 * non-TSO packets, this is equal to "count".
2095 * For TSO packets, rdma_count needs to be reset
2096 * to 0 after a segment cut.
2098 * The rdma_count field of the send request is
2099 * the number of RDMAs of the packet starting at
2100 * that request. For TSO send requests with one ore more cuts
2101 * in the middle, this is the number of RDMAs starting
2102 * after the last cut in the request. All previous
2103 * segments before the last cut implicitly have 1 RDMA.
2105 * Since the number of RDMAs is not known beforehand,
2106 * it must be filled-in retroactively - after each
2107 * segmentation cut or at the end of the entire packet.
2111 /* Break the SKB or Fragment up into pieces which
2112 * do not cross mgp->tx.boundary */
2113 low = MYRI10GE_LOWPART_TO_U32(bus);
2114 high_swapped = htonl(MYRI10GE_HIGHPART_TO_U32(bus));
2119 if (unlikely(count == max_segments))
2120 goto abort_linearize;
2122 boundary = (low + tx->boundary) & ~(tx->boundary - 1);
2123 seglen = boundary - low;
2126 flags_next = flags & ~MXGEFW_FLAGS_FIRST;
2127 cum_len_next = cum_len + seglen;
2128 if (mss) { /* TSO */
2129 (req - rdma_count)->rdma_count = rdma_count + 1;
2131 if (likely(cum_len >= 0)) { /* payload */
2132 int next_is_first, chop;
2134 chop = (cum_len_next > mss);
2135 cum_len_next = cum_len_next % mss;
2136 next_is_first = (cum_len_next == 0);
2137 flags |= chop * MXGEFW_FLAGS_TSO_CHOP;
2138 flags_next |= next_is_first *
2140 rdma_count |= -(chop | next_is_first);
2141 rdma_count += chop & !next_is_first;
2142 } else if (likely(cum_len_next >= 0)) { /* header ends */
2148 small = (mss <= MXGEFW_SEND_SMALL_SIZE);
2149 flags_next = MXGEFW_FLAGS_TSO_PLD |
2150 MXGEFW_FLAGS_FIRST |
2151 (small * MXGEFW_FLAGS_SMALL);
2154 req->addr_high = high_swapped;
2155 req->addr_low = htonl(low);
2156 req->pseudo_hdr_offset = htons(pseudo_hdr_offset);
2157 req->pad = 0; /* complete solid 16-byte block; does this matter? */
2158 req->rdma_count = 1;
2159 req->length = htons(seglen);
2160 req->cksum_offset = cksum_offset;
2161 req->flags = flags | ((cum_len & 1) * odd_flag);
2165 cum_len = cum_len_next;
2170 if (unlikely(cksum_offset > seglen))
2171 cksum_offset -= seglen;
2175 if (frag_idx == frag_cnt)
2178 /* map next fragment for DMA */
2179 idx = (count + tx->req) & tx->mask;
2180 frag = &skb_shinfo(skb)->frags[frag_idx];
2183 bus = pci_map_page(mgp->pdev, frag->page, frag->page_offset,
2184 len, PCI_DMA_TODEVICE);
2185 pci_unmap_addr_set(&tx->info[idx], bus, bus);
2186 pci_unmap_len_set(&tx->info[idx], len, len);
2189 (req - rdma_count)->rdma_count = rdma_count;
2193 req->flags |= MXGEFW_FLAGS_TSO_LAST;
2194 } while (!(req->flags & (MXGEFW_FLAGS_TSO_CHOP |
2195 MXGEFW_FLAGS_FIRST)));
2196 idx = ((count - 1) + tx->req) & tx->mask;
2197 tx->info[idx].last = 1;
2198 if (tx->wc_fifo == NULL)
2199 myri10ge_submit_req(tx, tx->req_list, count);
2201 myri10ge_submit_req_wc(tx, tx->req_list, count);
2203 if ((avail - count) < MXGEFW_MAX_SEND_DESC) {
2205 netif_stop_queue(dev);
2207 dev->trans_start = jiffies;
2211 /* Free any DMA resources we've alloced and clear out the skb
2212 * slot so as to not trip up assertions, and to avoid a
2213 * double-free if linearizing fails */
2215 last_idx = (idx + 1) & tx->mask;
2216 idx = tx->req & tx->mask;
2217 tx->info[idx].skb = NULL;
2219 len = pci_unmap_len(&tx->info[idx], len);
2221 if (tx->info[idx].skb != NULL)
2222 pci_unmap_single(mgp->pdev,
2223 pci_unmap_addr(&tx->info[idx],
2227 pci_unmap_page(mgp->pdev,
2228 pci_unmap_addr(&tx->info[idx],
2231 pci_unmap_len_set(&tx->info[idx], len, 0);
2232 tx->info[idx].skb = NULL;
2234 idx = (idx + 1) & tx->mask;
2235 } while (idx != last_idx);
2236 if (skb_is_gso(skb)) {
2238 "myri10ge: %s: TSO but wanted to linearize?!?!?\n",
2243 if (skb_linearize(skb))
2246 mgp->tx_linearized++;
2250 dev_kfree_skb_any(skb);
2251 mgp->stats.tx_dropped += 1;
2256 static struct net_device_stats *myri10ge_get_stats(struct net_device *dev)
2258 struct myri10ge_priv *mgp = netdev_priv(dev);
2262 static void myri10ge_set_multicast_list(struct net_device *dev)
2264 struct myri10ge_cmd cmd;
2265 struct myri10ge_priv *mgp;
2266 struct dev_mc_list *mc_list;
2267 __be32 data[2] = { 0, 0 };
2270 mgp = netdev_priv(dev);
2271 /* can be called from atomic contexts,
2272 * pass 1 to force atomicity in myri10ge_send_cmd() */
2273 myri10ge_change_promisc(mgp, dev->flags & IFF_PROMISC, 1);
2275 /* This firmware is known to not support multicast */
2276 if (!mgp->fw_multicast_support || mgp->adopted_rx_filter_bug)
2279 /* Disable multicast filtering */
2281 err = myri10ge_send_cmd(mgp, MXGEFW_ENABLE_ALLMULTI, &cmd, 1);
2283 printk(KERN_ERR "myri10ge: %s: Failed MXGEFW_ENABLE_ALLMULTI,"
2284 " error status: %d\n", dev->name, err);
2288 if (dev->flags & IFF_ALLMULTI) {
2289 /* request to disable multicast filtering, so quit here */
2293 /* Flush the filters */
2295 err = myri10ge_send_cmd(mgp, MXGEFW_LEAVE_ALL_MULTICAST_GROUPS,
2299 "myri10ge: %s: Failed MXGEFW_LEAVE_ALL_MULTICAST_GROUPS"
2300 ", error status: %d\n", dev->name, err);
2304 /* Walk the multicast list, and add each address */
2305 for (mc_list = dev->mc_list; mc_list != NULL; mc_list = mc_list->next) {
2306 memcpy(data, &mc_list->dmi_addr, 6);
2307 cmd.data0 = ntohl(data[0]);
2308 cmd.data1 = ntohl(data[1]);
2309 err = myri10ge_send_cmd(mgp, MXGEFW_JOIN_MULTICAST_GROUP,
2313 printk(KERN_ERR "myri10ge: %s: Failed "
2314 "MXGEFW_JOIN_MULTICAST_GROUP, error status:"
2315 "%d\t", dev->name, err);
2316 printk(KERN_ERR "MAC %02x:%02x:%02x:%02x:%02x:%02x\n",
2317 ((unsigned char *)&mc_list->dmi_addr)[0],
2318 ((unsigned char *)&mc_list->dmi_addr)[1],
2319 ((unsigned char *)&mc_list->dmi_addr)[2],
2320 ((unsigned char *)&mc_list->dmi_addr)[3],
2321 ((unsigned char *)&mc_list->dmi_addr)[4],
2322 ((unsigned char *)&mc_list->dmi_addr)[5]
2327 /* Enable multicast filtering */
2328 err = myri10ge_send_cmd(mgp, MXGEFW_DISABLE_ALLMULTI, &cmd, 1);
2330 printk(KERN_ERR "myri10ge: %s: Failed MXGEFW_DISABLE_ALLMULTI,"
2331 "error status: %d\n", dev->name, err);
2341 static int myri10ge_set_mac_address(struct net_device *dev, void *addr)
2343 struct sockaddr *sa = addr;
2344 struct myri10ge_priv *mgp = netdev_priv(dev);
2347 if (!is_valid_ether_addr(sa->sa_data))
2348 return -EADDRNOTAVAIL;
2350 status = myri10ge_update_mac_address(mgp, sa->sa_data);
2353 "myri10ge: %s: changing mac address failed with %d\n",
2358 /* change the dev structure */
2359 memcpy(dev->dev_addr, sa->sa_data, 6);
2363 static int myri10ge_change_mtu(struct net_device *dev, int new_mtu)
2365 struct myri10ge_priv *mgp = netdev_priv(dev);
2368 if ((new_mtu < 68) || (ETH_HLEN + new_mtu > MYRI10GE_MAX_ETHER_MTU)) {
2369 printk(KERN_ERR "myri10ge: %s: new mtu (%d) is not valid\n",
2370 dev->name, new_mtu);
2373 printk(KERN_INFO "%s: changing mtu from %d to %d\n",
2374 dev->name, dev->mtu, new_mtu);
2376 /* if we change the mtu on an active device, we must
2377 * reset the device so the firmware sees the change */
2378 myri10ge_close(dev);
2388 * Enable ECRC to align PCI-E Completion packets on an 8-byte boundary.
2389 * Only do it if the bridge is a root port since we don't want to disturb
2390 * any other device, except if forced with myri10ge_ecrc_enable > 1.
2393 static void myri10ge_enable_ecrc(struct myri10ge_priv *mgp)
2395 struct pci_dev *bridge = mgp->pdev->bus->self;
2396 struct device *dev = &mgp->pdev->dev;
2403 if (!myri10ge_ecrc_enable || !bridge)
2406 /* check that the bridge is a root port */
2407 cap = pci_find_capability(bridge, PCI_CAP_ID_EXP);
2408 pci_read_config_word(bridge, cap + PCI_CAP_FLAGS, &val);
2409 ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4;
2410 if (ext_type != PCI_EXP_TYPE_ROOT_PORT) {
2411 if (myri10ge_ecrc_enable > 1) {
2412 struct pci_dev *old_bridge = bridge;
2414 /* Walk the hierarchy up to the root port
2415 * where ECRC has to be enabled */
2417 bridge = bridge->bus->self;
2420 "Failed to find root port"
2421 " to force ECRC\n");
2425 pci_find_capability(bridge, PCI_CAP_ID_EXP);
2426 pci_read_config_word(bridge,
2427 cap + PCI_CAP_FLAGS, &val);
2428 ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4;
2429 } while (ext_type != PCI_EXP_TYPE_ROOT_PORT);
2432 "Forcing ECRC on non-root port %s"
2433 " (enabling on root port %s)\n",
2434 pci_name(old_bridge), pci_name(bridge));
2437 "Not enabling ECRC on non-root port %s\n",
2443 cap = pci_find_ext_capability(bridge, PCI_EXT_CAP_ID_ERR);
2447 ret = pci_read_config_dword(bridge, cap + PCI_ERR_CAP, &err_cap);
2449 dev_err(dev, "failed reading ext-conf-space of %s\n",
2451 dev_err(dev, "\t pci=nommconf in use? "
2452 "or buggy/incomplete/absent ACPI MCFG attr?\n");
2455 if (!(err_cap & PCI_ERR_CAP_ECRC_GENC))
2458 err_cap |= PCI_ERR_CAP_ECRC_GENE;
2459 pci_write_config_dword(bridge, cap + PCI_ERR_CAP, err_cap);
2460 dev_info(dev, "Enabled ECRC on upstream bridge %s\n", pci_name(bridge));
2461 mgp->tx.boundary = 4096;
2462 mgp->fw_name = myri10ge_fw_aligned;
2466 * The Lanai Z8E PCI-E interface achieves higher Read-DMA throughput
2467 * when the PCI-E Completion packets are aligned on an 8-byte
2468 * boundary. Some PCI-E chip sets always align Completion packets; on
2469 * the ones that do not, the alignment can be enforced by enabling
2470 * ECRC generation (if supported).
2472 * When PCI-E Completion packets are not aligned, it is actually more
2473 * efficient to limit Read-DMA transactions to 2KB, rather than 4KB.
2475 * If the driver can neither enable ECRC nor verify that it has
2476 * already been enabled, then it must use a firmware image which works
2477 * around unaligned completion packets (myri10ge_ethp_z8e.dat), and it
2478 * should also ensure that it never gives the device a Read-DMA which is
2479 * larger than 2KB by setting the tx.boundary to 2KB. If ECRC is
2480 * enabled, then the driver should use the aligned (myri10ge_eth_z8e.dat)
2481 * firmware image, and set tx.boundary to 4KB.
2484 #define PCI_DEVICE_ID_INTEL_E5000_PCIE23 0x25f7
2485 #define PCI_DEVICE_ID_INTEL_E5000_PCIE47 0x25fa
2487 static void myri10ge_select_firmware(struct myri10ge_priv *mgp)
2489 struct pci_dev *bridge = mgp->pdev->bus->self;
2491 mgp->tx.boundary = 2048;
2492 mgp->fw_name = myri10ge_fw_unaligned;
2494 if (myri10ge_force_firmware == 0) {
2495 int link_width, exp_cap;
2498 exp_cap = pci_find_capability(mgp->pdev, PCI_CAP_ID_EXP);
2499 pci_read_config_word(mgp->pdev, exp_cap + PCI_EXP_LNKSTA, &lnk);
2500 link_width = (lnk >> 4) & 0x3f;
2502 myri10ge_enable_ecrc(mgp);
2504 /* Check to see if Link is less than 8 or if the
2505 * upstream bridge is known to provide aligned
2507 if (link_width < 8) {
2508 dev_info(&mgp->pdev->dev, "PCIE x%d Link\n",
2510 mgp->tx.boundary = 4096;
2511 mgp->fw_name = myri10ge_fw_aligned;
2512 } else if (bridge &&
2513 /* ServerWorks HT2000/HT1000 */
2514 ((bridge->vendor == PCI_VENDOR_ID_SERVERWORKS
2515 && bridge->device ==
2516 PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE)
2517 /* All Intel E5000 PCIE ports */
2518 || (bridge->vendor == PCI_VENDOR_ID_INTEL
2519 && bridge->device >=
2520 PCI_DEVICE_ID_INTEL_E5000_PCIE23
2521 && bridge->device <=
2522 PCI_DEVICE_ID_INTEL_E5000_PCIE47))) {
2523 dev_info(&mgp->pdev->dev,
2524 "Assuming aligned completions (0x%x:0x%x)\n",
2525 bridge->vendor, bridge->device);
2526 mgp->tx.boundary = 4096;
2527 mgp->fw_name = myri10ge_fw_aligned;
2528 } else if (bridge &&
2529 bridge->vendor == PCI_VENDOR_ID_SGI &&
2530 bridge->device == 0x4002 /* TIOCE pcie-port */ ) {
2531 /* this pcie bridge does not support 4K rdma request */
2532 mgp->tx.boundary = 2048;
2533 mgp->fw_name = myri10ge_fw_aligned;
2536 if (myri10ge_force_firmware == 1) {
2537 dev_info(&mgp->pdev->dev,
2538 "Assuming aligned completions (forced)\n");
2539 mgp->tx.boundary = 4096;
2540 mgp->fw_name = myri10ge_fw_aligned;
2542 dev_info(&mgp->pdev->dev,
2543 "Assuming unaligned completions (forced)\n");
2544 mgp->tx.boundary = 2048;
2545 mgp->fw_name = myri10ge_fw_unaligned;
2548 if (myri10ge_fw_name != NULL) {
2549 dev_info(&mgp->pdev->dev, "overriding firmware to %s\n",
2551 mgp->fw_name = myri10ge_fw_name;
2557 static int myri10ge_suspend(struct pci_dev *pdev, pm_message_t state)
2559 struct myri10ge_priv *mgp;
2560 struct net_device *netdev;
2562 mgp = pci_get_drvdata(pdev);
2567 netif_device_detach(netdev);
2568 if (netif_running(netdev)) {
2569 printk(KERN_INFO "myri10ge: closing %s\n", netdev->name);
2571 myri10ge_close(netdev);
2574 myri10ge_dummy_rdma(mgp, 0);
2575 pci_save_state(pdev);
2576 pci_disable_device(pdev);
2578 return pci_set_power_state(pdev, pci_choose_state(pdev, state));
2581 static int myri10ge_resume(struct pci_dev *pdev)
2583 struct myri10ge_priv *mgp;
2584 struct net_device *netdev;
2588 mgp = pci_get_drvdata(pdev);
2592 pci_set_power_state(pdev, 0); /* zeros conf space as a side effect */
2593 msleep(5); /* give card time to respond */
2594 pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor);
2595 if (vendor == 0xffff) {
2596 printk(KERN_ERR "myri10ge: %s: device disappeared!\n",
2601 status = pci_restore_state(pdev);
2605 status = pci_enable_device(pdev);
2607 dev_err(&pdev->dev, "failed to enable device\n");
2611 pci_set_master(pdev);
2613 myri10ge_reset(mgp);
2614 myri10ge_dummy_rdma(mgp, 1);
2616 /* Save configuration space to be restored if the
2617 * nic resets due to a parity error */
2618 pci_save_state(pdev);
2620 if (netif_running(netdev)) {
2622 status = myri10ge_open(netdev);
2625 goto abort_with_enabled;
2628 netif_device_attach(netdev);
2633 pci_disable_device(pdev);
2638 #endif /* CONFIG_PM */
2640 static u32 myri10ge_read_reboot(struct myri10ge_priv *mgp)
2642 struct pci_dev *pdev = mgp->pdev;
2643 int vs = mgp->vendor_specific_offset;
2646 /*enter read32 mode */
2647 pci_write_config_byte(pdev, vs + 0x10, 0x3);
2649 /*read REBOOT_STATUS (0xfffffff0) */
2650 pci_write_config_dword(pdev, vs + 0x18, 0xfffffff0);
2651 pci_read_config_dword(pdev, vs + 0x14, &reboot);
2656 * This watchdog is used to check whether the board has suffered
2657 * from a parity error and needs to be recovered.
2659 static void myri10ge_watchdog(struct work_struct *work)
2661 struct myri10ge_priv *mgp =
2662 container_of(work, struct myri10ge_priv, watchdog_work);
2667 mgp->watchdog_resets++;
2668 pci_read_config_word(mgp->pdev, PCI_COMMAND, &cmd);
2669 if ((cmd & PCI_COMMAND_MASTER) == 0) {
2670 /* Bus master DMA disabled? Check to see
2671 * if the card rebooted due to a parity error
2672 * For now, just report it */
2673 reboot = myri10ge_read_reboot(mgp);
2675 "myri10ge: %s: NIC rebooted (0x%x), resetting\n",
2676 mgp->dev->name, reboot);
2678 * A rebooted nic will come back with config space as
2679 * it was after power was applied to PCIe bus.
2680 * Attempt to restore config space which was saved
2681 * when the driver was loaded, or the last time the
2682 * nic was resumed from power saving mode.
2684 pci_restore_state(mgp->pdev);
2686 /* save state again for accounting reasons */
2687 pci_save_state(mgp->pdev);
2690 /* if we get back -1's from our slot, perhaps somebody
2691 * powered off our card. Don't try to reset it in
2693 if (cmd == 0xffff) {
2694 pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor);
2695 if (vendor == 0xffff) {
2697 "myri10ge: %s: device disappeared!\n",
2702 /* Perhaps it is a software error. Try to reset */
2704 printk(KERN_ERR "myri10ge: %s: device timeout, resetting\n",
2706 printk(KERN_INFO "myri10ge: %s: %d %d %d %d %d\n",
2707 mgp->dev->name, mgp->tx.req, mgp->tx.done,
2708 mgp->tx.pkt_start, mgp->tx.pkt_done,
2709 (int)ntohl(mgp->fw_stats->send_done_count));
2711 printk(KERN_INFO "myri10ge: %s: %d %d %d %d %d\n",
2712 mgp->dev->name, mgp->tx.req, mgp->tx.done,
2713 mgp->tx.pkt_start, mgp->tx.pkt_done,
2714 (int)ntohl(mgp->fw_stats->send_done_count));
2717 myri10ge_close(mgp->dev);
2718 status = myri10ge_load_firmware(mgp);
2720 printk(KERN_ERR "myri10ge: %s: failed to load firmware\n",
2723 myri10ge_open(mgp->dev);
2728 * We use our own timer routine rather than relying upon
2729 * netdev->tx_timeout because we have a very large hardware transmit
2730 * queue. Due to the large queue, the netdev->tx_timeout function
2731 * cannot detect a NIC with a parity error in a timely fashion if the
2732 * NIC is lightly loaded.
2734 static void myri10ge_watchdog_timer(unsigned long arg)
2736 struct myri10ge_priv *mgp;
2738 mgp = (struct myri10ge_priv *)arg;
2740 if (mgp->rx_small.watchdog_needed) {
2741 myri10ge_alloc_rx_pages(mgp, &mgp->rx_small,
2742 mgp->small_bytes + MXGEFW_PAD, 1);
2743 if (mgp->rx_small.fill_cnt - mgp->rx_small.cnt >=
2744 myri10ge_fill_thresh)
2745 mgp->rx_small.watchdog_needed = 0;
2747 if (mgp->rx_big.watchdog_needed) {
2748 myri10ge_alloc_rx_pages(mgp, &mgp->rx_big, mgp->big_bytes, 1);
2749 if (mgp->rx_big.fill_cnt - mgp->rx_big.cnt >=
2750 myri10ge_fill_thresh)
2751 mgp->rx_big.watchdog_needed = 0;
2754 if (mgp->tx.req != mgp->tx.done &&
2755 mgp->tx.done == mgp->watchdog_tx_done &&
2756 mgp->watchdog_tx_req != mgp->watchdog_tx_done)
2757 /* nic seems like it might be stuck.. */
2758 schedule_work(&mgp->watchdog_work);
2761 mod_timer(&mgp->watchdog_timer,
2762 jiffies + myri10ge_watchdog_timeout * HZ);
2764 mgp->watchdog_tx_done = mgp->tx.done;
2765 mgp->watchdog_tx_req = mgp->tx.req;
2768 static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
2770 struct net_device *netdev;
2771 struct myri10ge_priv *mgp;
2772 struct device *dev = &pdev->dev;
2775 int status = -ENXIO;
2780 netdev = alloc_etherdev(sizeof(*mgp));
2781 if (netdev == NULL) {
2782 dev_err(dev, "Could not allocate ethernet device\n");
2786 mgp = netdev_priv(netdev);
2787 memset(mgp, 0, sizeof(*mgp));
2790 mgp->csum_flag = MXGEFW_FLAGS_CKSUM;
2791 mgp->pause = myri10ge_flow_control;
2792 mgp->intr_coal_delay = myri10ge_intr_coal_delay;
2793 mgp->msg_enable = netif_msg_init(myri10ge_debug, MYRI10GE_MSG_DEFAULT);
2794 init_waitqueue_head(&mgp->down_wq);
2796 if (pci_enable_device(pdev)) {
2797 dev_err(&pdev->dev, "pci_enable_device call failed\n");
2799 goto abort_with_netdev;
2801 myri10ge_select_firmware(mgp);
2803 /* Find the vendor-specific cap so we can check
2804 * the reboot register later on */
2805 mgp->vendor_specific_offset
2806 = pci_find_capability(pdev, PCI_CAP_ID_VNDR);
2808 /* Set our max read request to 4KB */
2809 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
2811 dev_err(&pdev->dev, "Bad PCI_CAP_ID_EXP location %d\n", cap);
2812 goto abort_with_netdev;
2814 status = pci_read_config_word(pdev, cap + PCI_EXP_DEVCTL, &val);
2816 dev_err(&pdev->dev, "Error %d reading PCI_EXP_DEVCTL\n",
2818 goto abort_with_netdev;
2820 val = (val & ~PCI_EXP_DEVCTL_READRQ) | (5 << 12);
2821 status = pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL, val);
2823 dev_err(&pdev->dev, "Error %d writing PCI_EXP_DEVCTL\n",
2825 goto abort_with_netdev;
2828 pci_set_master(pdev);
2830 status = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
2834 "64-bit pci address mask was refused, trying 32-bit");
2835 status = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2838 dev_err(&pdev->dev, "Error %d setting DMA mask\n", status);
2839 goto abort_with_netdev;
2841 mgp->cmd = dma_alloc_coherent(&pdev->dev, sizeof(*mgp->cmd),
2842 &mgp->cmd_bus, GFP_KERNEL);
2843 if (mgp->cmd == NULL)
2844 goto abort_with_netdev;
2846 mgp->fw_stats = dma_alloc_coherent(&pdev->dev, sizeof(*mgp->fw_stats),
2847 &mgp->fw_stats_bus, GFP_KERNEL);
2848 if (mgp->fw_stats == NULL)
2849 goto abort_with_cmd;
2851 mgp->board_span = pci_resource_len(pdev, 0);
2852 mgp->iomem_base = pci_resource_start(pdev, 0);
2854 mgp->wc_enabled = 0;
2856 mgp->mtrr = mtrr_add(mgp->iomem_base, mgp->board_span,
2857 MTRR_TYPE_WRCOMB, 1);
2859 mgp->wc_enabled = 1;
2861 /* Hack. need to get rid of these magic numbers */
2863 2 * 1024 * 1024 - (2 * (48 * 1024) + (32 * 1024)) - 0x100;
2864 if (mgp->sram_size > mgp->board_span) {
2865 dev_err(&pdev->dev, "board span %ld bytes too small\n",
2869 mgp->sram = ioremap(mgp->iomem_base, mgp->board_span);
2870 if (mgp->sram == NULL) {
2871 dev_err(&pdev->dev, "ioremap failed for %ld bytes at 0x%lx\n",
2872 mgp->board_span, mgp->iomem_base);
2876 memcpy_fromio(mgp->eeprom_strings,
2877 mgp->sram + mgp->sram_size - MYRI10GE_EEPROM_STRINGS_SIZE,
2878 MYRI10GE_EEPROM_STRINGS_SIZE);
2879 memset(mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE - 2, 0, 2);
2880 status = myri10ge_read_mac_addr(mgp);
2882 goto abort_with_ioremap;
2884 for (i = 0; i < ETH_ALEN; i++)
2885 netdev->dev_addr[i] = mgp->mac_addr[i];
2887 /* allocate rx done ring */
2888 bytes = myri10ge_max_intr_slots * sizeof(*mgp->rx_done.entry);
2889 mgp->rx_done.entry = dma_alloc_coherent(&pdev->dev, bytes,
2890 &mgp->rx_done.bus, GFP_KERNEL);
2891 if (mgp->rx_done.entry == NULL)
2892 goto abort_with_ioremap;
2893 memset(mgp->rx_done.entry, 0, bytes);
2895 status = myri10ge_load_firmware(mgp);
2897 dev_err(&pdev->dev, "failed to load firmware\n");
2898 goto abort_with_rx_done;
2901 status = myri10ge_reset(mgp);
2903 dev_err(&pdev->dev, "failed reset\n");
2904 goto abort_with_firmware;
2907 pci_set_drvdata(pdev, mgp);
2908 if ((myri10ge_initial_mtu + ETH_HLEN) > MYRI10GE_MAX_ETHER_MTU)
2909 myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN;
2910 if ((myri10ge_initial_mtu + ETH_HLEN) < 68)
2911 myri10ge_initial_mtu = 68;
2912 netdev->mtu = myri10ge_initial_mtu;
2913 netdev->open = myri10ge_open;
2914 netdev->stop = myri10ge_close;
2915 netdev->hard_start_xmit = myri10ge_xmit;
2916 netdev->get_stats = myri10ge_get_stats;
2917 netdev->base_addr = mgp->iomem_base;
2918 netdev->change_mtu = myri10ge_change_mtu;
2919 netdev->set_multicast_list = myri10ge_set_multicast_list;
2920 netdev->set_mac_address = myri10ge_set_mac_address;
2921 netdev->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO;
2923 netdev->features |= NETIF_F_HIGHDMA;
2924 netdev->poll = myri10ge_poll;
2925 netdev->weight = myri10ge_napi_weight;
2927 /* make sure we can get an irq, and that MSI can be
2928 * setup (if available). Also ensure netdev->irq
2929 * is set to correct value if MSI is enabled */
2930 status = myri10ge_request_irq(mgp);
2932 goto abort_with_firmware;
2933 netdev->irq = pdev->irq;
2934 myri10ge_free_irq(mgp);
2936 /* Save configuration space to be restored if the
2937 * nic resets due to a parity error */
2938 pci_save_state(pdev);
2940 /* Setup the watchdog timer */
2941 setup_timer(&mgp->watchdog_timer, myri10ge_watchdog_timer,
2942 (unsigned long)mgp);
2944 SET_ETHTOOL_OPS(netdev, &myri10ge_ethtool_ops);
2945 INIT_WORK(&mgp->watchdog_work, myri10ge_watchdog);
2946 status = register_netdev(netdev);
2948 dev_err(&pdev->dev, "register_netdev failed: %d\n", status);
2949 goto abort_with_state;
2951 dev_info(dev, "%s IRQ %d, tx bndry %d, fw %s, WC %s\n",
2952 (mgp->msi_enabled ? "MSI" : "xPIC"),
2953 netdev->irq, mgp->tx.boundary, mgp->fw_name,
2954 (mgp->wc_enabled ? "Enabled" : "Disabled"));
2959 pci_restore_state(pdev);
2961 abort_with_firmware:
2962 myri10ge_dummy_rdma(mgp, 0);
2965 bytes = myri10ge_max_intr_slots * sizeof(*mgp->rx_done.entry);
2966 dma_free_coherent(&pdev->dev, bytes,
2967 mgp->rx_done.entry, mgp->rx_done.bus);
2975 mtrr_del(mgp->mtrr, mgp->iomem_base, mgp->board_span);
2977 dma_free_coherent(&pdev->dev, sizeof(*mgp->fw_stats),
2978 mgp->fw_stats, mgp->fw_stats_bus);
2981 dma_free_coherent(&pdev->dev, sizeof(*mgp->cmd),
2982 mgp->cmd, mgp->cmd_bus);
2986 free_netdev(netdev);
2993 * Does what is necessary to shutdown one Myrinet device. Called
2994 * once for each Myrinet card by the kernel when a module is
2997 static void myri10ge_remove(struct pci_dev *pdev)
2999 struct myri10ge_priv *mgp;
3000 struct net_device *netdev;
3003 mgp = pci_get_drvdata(pdev);
3007 flush_scheduled_work();
3009 unregister_netdev(netdev);
3011 myri10ge_dummy_rdma(mgp, 0);
3013 /* avoid a memory leak */
3014 pci_restore_state(pdev);
3016 bytes = myri10ge_max_intr_slots * sizeof(*mgp->rx_done.entry);
3017 dma_free_coherent(&pdev->dev, bytes,
3018 mgp->rx_done.entry, mgp->rx_done.bus);
3024 mtrr_del(mgp->mtrr, mgp->iomem_base, mgp->board_span);
3026 dma_free_coherent(&pdev->dev, sizeof(*mgp->fw_stats),
3027 mgp->fw_stats, mgp->fw_stats_bus);
3029 dma_free_coherent(&pdev->dev, sizeof(*mgp->cmd),
3030 mgp->cmd, mgp->cmd_bus);
3032 free_netdev(netdev);
3033 pci_set_drvdata(pdev, NULL);
3036 #define PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E 0x0008
3038 static struct pci_device_id myri10ge_pci_tbl[] = {
3039 {PCI_DEVICE(PCI_VENDOR_ID_MYRICOM, PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E)},
3043 static struct pci_driver myri10ge_driver = {
3045 .probe = myri10ge_probe,
3046 .remove = myri10ge_remove,
3047 .id_table = myri10ge_pci_tbl,
3049 .suspend = myri10ge_suspend,
3050 .resume = myri10ge_resume,
3054 static __init int myri10ge_init_module(void)
3056 printk(KERN_INFO "%s: Version %s\n", myri10ge_driver.name,
3057 MYRI10GE_VERSION_STR);
3058 return pci_register_driver(&myri10ge_driver);
3061 module_init(myri10ge_init_module);
3063 static __exit void myri10ge_cleanup_module(void)
3065 pci_unregister_driver(&myri10ge_driver);
3068 module_exit(myri10ge_cleanup_module);