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Brice Goglin0da34b62006-05-23 06:10:15 -04001/*************************************************************************
2 * myri10ge.c: Myricom Myri-10G Ethernet driver.
3 *
Brice Goglin4a2e6122007-02-27 17:18:40 +01004 * Copyright (C) 2005 - 2007 Myricom, Inc.
Brice Goglin0da34b62006-05-23 06:10:15 -04005 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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.
18 *
Brice Goglin4a2e6122007-02-27 17:18:40 +010019 * 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
Brice Goglin0da34b62006-05-23 06:10:15 -040021 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
Brice Goglin4a2e6122007-02-27 17:18:40 +010022 * 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.
Brice Goglin0da34b62006-05-23 06:10:15 -040030 *
31 *
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
35 *
36 * Contact Information:
37 * <help@myri.com>
38 * Myricom, Inc., 325N Santa Anita Avenue, Arcadia, CA 91006
39 *************************************************************************/
40
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>
Brice Goglinb10c0662006-06-08 10:25:00 -040047#include <linux/dma-mapping.h>
Brice Goglin0da34b62006-05-23 06:10:15 -040048#include <linux/etherdevice.h>
49#include <linux/if_ether.h>
50#include <linux/if_vlan.h>
51#include <linux/ip.h>
52#include <linux/inet.h>
53#include <linux/in.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>
62#include <linux/io.h>
63#include <net/checksum.h>
64#include <asm/byteorder.h>
65#include <asm/io.h>
Brice Goglin0da34b62006-05-23 06:10:15 -040066#include <asm/processor.h>
67#ifdef CONFIG_MTRR
68#include <asm/mtrr.h>
69#endif
70
71#include "myri10ge_mcp.h"
72#include "myri10ge_mcp_gen_header.h"
73
Brice Goglin917690c2007-03-27 21:54:53 +020074#define MYRI10GE_VERSION_STR "1.3.0-1.227"
Brice Goglin0da34b62006-05-23 06:10:15 -040075
76MODULE_DESCRIPTION("Myricom 10G driver (10GbE)");
77MODULE_AUTHOR("Maintainer: help@myri.com");
78MODULE_VERSION(MYRI10GE_VERSION_STR);
79MODULE_LICENSE("Dual BSD/GPL");
80
81#define MYRI10GE_MAX_ETHER_MTU 9014
82
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
88
89#define MYRI10GE_EEPROM_STRINGS_SIZE 256
90#define MYRI10GE_MAX_SEND_DESC_TSO ((65536 / 2048) * 2)
91
Al Viro40f6cff2006-11-20 13:48:32 -050092#define MYRI10GE_NO_CONFIRM_DATA htonl(0xffffffff)
Brice Goglin0da34b62006-05-23 06:10:15 -040093#define MYRI10GE_NO_RESPONSE_RESULT 0xffffffff
94
Brice Goglindd50f332006-12-11 11:25:09 +010095#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)
98
Brice Goglin0da34b62006-05-23 06:10:15 -040099struct myri10ge_rx_buffer_state {
Brice Goglindd50f332006-12-11 11:25:09 +0100100 struct page *page;
101 int page_offset;
Brice Goglin0da34b62006-05-23 06:10:15 -0400102 DECLARE_PCI_UNMAP_ADDR(bus)
103 DECLARE_PCI_UNMAP_LEN(len)
104};
105
106struct myri10ge_tx_buffer_state {
107 struct sk_buff *skb;
108 int last;
109 DECLARE_PCI_UNMAP_ADDR(bus)
110 DECLARE_PCI_UNMAP_LEN(len)
111};
112
113struct myri10ge_cmd {
114 u32 data0;
115 u32 data1;
116 u32 data2;
117};
118
119struct 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;
Brice Goglindd50f332006-12-11 11:25:09 +0100124 struct page *page;
125 dma_addr_t bus;
126 int page_offset;
Brice Goglin0da34b62006-05-23 06:10:15 -0400127 int cnt;
Brice Goglindd50f332006-12-11 11:25:09 +0100128 int fill_cnt;
Brice Goglin0da34b62006-05-23 06:10:15 -0400129 int alloc_fail;
130 int mask; /* number of rx slots -1 */
Brice Goglindd50f332006-12-11 11:25:09 +0100131 int watchdog_needed;
Brice Goglin0da34b62006-05-23 06:10:15 -0400132};
133
134struct 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 */
138 char *req_bytes;
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 */
146};
147
148struct myri10ge_rx_done {
149 struct mcp_slot *entry;
150 dma_addr_t bus;
151 int cnt;
152 int idx;
153};
154
155struct 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;
162 int small_bytes;
Brice Goglindd50f332006-12-11 11:25:09 +0100163 int big_bytes;
Brice Goglin0da34b62006-05-23 06:10:15 -0400164 struct net_device *dev;
165 struct net_device_stats stats;
166 u8 __iomem *sram;
167 int sram_size;
168 unsigned long board_span;
169 unsigned long iomem_base;
Al Viro40f6cff2006-11-20 13:48:32 -0500170 __be32 __iomem *irq_claim;
171 __be32 __iomem *irq_deassert;
Brice Goglin0da34b62006-05-23 06:10:15 -0400172 char *mac_addr_string;
173 struct mcp_cmd_response *cmd;
174 dma_addr_t cmd_bus;
175 struct mcp_irq_data *fw_stats;
176 dma_addr_t fw_stats_bus;
177 struct pci_dev *pdev;
178 int msi_enabled;
Al Viro40f6cff2006-11-20 13:48:32 -0500179 __be32 link_state;
Brice Goglin0da34b62006-05-23 06:10:15 -0400180 unsigned int rdma_tags_available;
181 int intr_coal_delay;
Al Viro40f6cff2006-11-20 13:48:32 -0500182 __be32 __iomem *intr_coal_delay_ptr;
Brice Goglin0da34b62006-05-23 06:10:15 -0400183 int mtrr;
Brice Goglin276e26c2007-03-07 20:02:32 +0100184 int wc_enabled;
Brice Goglin0da34b62006-05-23 06:10:15 -0400185 int wake_queue;
186 int stop_queue;
187 int down_cnt;
188 wait_queue_head_t down_wq;
189 struct work_struct watchdog_work;
190 struct timer_list watchdog_timer;
191 int watchdog_tx_done;
Brice Goglinc54772e2006-07-30 00:14:15 -0400192 int watchdog_tx_req;
Brice Goglin0da34b62006-05-23 06:10:15 -0400193 int watchdog_resets;
194 int tx_linearized;
195 int pause;
196 char *fw_name;
197 char eeprom_strings[MYRI10GE_EEPROM_STRINGS_SIZE];
198 char fw_version[128];
Brice Goglin9dc6f0e2007-02-21 18:05:17 +0100199 int fw_ver_major;
200 int fw_ver_minor;
201 int fw_ver_tiny;
202 int adopted_rx_filter_bug;
Brice Goglin0da34b62006-05-23 06:10:15 -0400203 u8 mac_addr[6]; /* eeprom mac address */
204 unsigned long serial_number;
205 int vendor_specific_offset;
Brice Goglin85a7ea12006-08-21 17:36:56 -0400206 int fw_multicast_support;
Brice Goglin0da34b62006-05-23 06:10:15 -0400207 u32 read_dma;
208 u32 write_dma;
209 u32 read_write_dma;
Brice Goglinc58ac5c2006-08-21 17:36:49 -0400210 u32 link_changes;
211 u32 msg_enable;
Brice Goglin0da34b62006-05-23 06:10:15 -0400212};
213
214static char *myri10ge_fw_unaligned = "myri10ge_ethp_z8e.dat";
215static char *myri10ge_fw_aligned = "myri10ge_eth_z8e.dat";
216
217static char *myri10ge_fw_name = NULL;
218module_param(myri10ge_fw_name, charp, S_IRUGO | S_IWUSR);
219MODULE_PARM_DESC(myri10ge_fw_name, "Firmware image name\n");
220
221static int myri10ge_ecrc_enable = 1;
222module_param(myri10ge_ecrc_enable, int, S_IRUGO);
223MODULE_PARM_DESC(myri10ge_ecrc_enable, "Enable Extended CRC on PCI-E\n");
224
225static int myri10ge_max_intr_slots = 1024;
226module_param(myri10ge_max_intr_slots, int, S_IRUGO);
227MODULE_PARM_DESC(myri10ge_max_intr_slots, "Interrupt queue slots\n");
228
229static int myri10ge_small_bytes = -1; /* -1 == auto */
230module_param(myri10ge_small_bytes, int, S_IRUGO | S_IWUSR);
231MODULE_PARM_DESC(myri10ge_small_bytes, "Threshold of small packets\n");
232
233static int myri10ge_msi = 1; /* enable msi by default */
Brice Goglin3621cec2006-12-18 11:51:22 +0100234module_param(myri10ge_msi, int, S_IRUGO | S_IWUSR);
Brice Goglin0da34b62006-05-23 06:10:15 -0400235MODULE_PARM_DESC(myri10ge_msi, "Enable Message Signalled Interrupts\n");
236
Brice Goglinf761fae2007-03-21 19:45:56 +0100237static int myri10ge_intr_coal_delay = 75;
Brice Goglin0da34b62006-05-23 06:10:15 -0400238module_param(myri10ge_intr_coal_delay, int, S_IRUGO);
239MODULE_PARM_DESC(myri10ge_intr_coal_delay, "Interrupt coalescing delay\n");
240
241static int myri10ge_flow_control = 1;
242module_param(myri10ge_flow_control, int, S_IRUGO);
243MODULE_PARM_DESC(myri10ge_flow_control, "Pause parameter\n");
244
245static int myri10ge_deassert_wait = 1;
246module_param(myri10ge_deassert_wait, int, S_IRUGO | S_IWUSR);
247MODULE_PARM_DESC(myri10ge_deassert_wait,
248 "Wait when deasserting legacy interrupts\n");
249
250static int myri10ge_force_firmware = 0;
251module_param(myri10ge_force_firmware, int, S_IRUGO);
252MODULE_PARM_DESC(myri10ge_force_firmware,
253 "Force firmware to assume aligned completions\n");
254
Brice Goglin0da34b62006-05-23 06:10:15 -0400255static int myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN;
256module_param(myri10ge_initial_mtu, int, S_IRUGO);
257MODULE_PARM_DESC(myri10ge_initial_mtu, "Initial MTU\n");
258
259static int myri10ge_napi_weight = 64;
260module_param(myri10ge_napi_weight, int, S_IRUGO);
261MODULE_PARM_DESC(myri10ge_napi_weight, "Set NAPI weight\n");
262
263static int myri10ge_watchdog_timeout = 1;
264module_param(myri10ge_watchdog_timeout, int, S_IRUGO);
265MODULE_PARM_DESC(myri10ge_watchdog_timeout, "Set watchdog timeout\n");
266
267static int myri10ge_max_irq_loops = 1048576;
268module_param(myri10ge_max_irq_loops, int, S_IRUGO);
269MODULE_PARM_DESC(myri10ge_max_irq_loops,
270 "Set stuck legacy IRQ detection threshold\n");
271
Brice Goglinc58ac5c2006-08-21 17:36:49 -0400272#define MYRI10GE_MSG_DEFAULT NETIF_MSG_LINK
273
274static int myri10ge_debug = -1; /* defaults above */
275module_param(myri10ge_debug, int, 0);
276MODULE_PARM_DESC(myri10ge_debug, "Debug level (0=none,...,16=all)");
277
Brice Goglindd50f332006-12-11 11:25:09 +0100278static int myri10ge_fill_thresh = 256;
279module_param(myri10ge_fill_thresh, int, S_IRUGO | S_IWUSR);
280MODULE_PARM_DESC(myri10ge_fill_thresh, "Number of empty rx slots allowed\n");
281
Brice Goglinf761fae2007-03-21 19:45:56 +0100282static int myri10ge_wcfifo = 0;
Brice Goglin6ebc0872007-01-09 21:04:25 +0100283module_param(myri10ge_wcfifo, int, S_IRUGO);
284MODULE_PARM_DESC(myri10ge_wcfifo, "Enable WC Fifo when WC is enabled\n");
285
Brice Goglin0da34b62006-05-23 06:10:15 -0400286#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))
290
291#define myri10ge_pio_copy(to,from,size) __iowrite64_copy(to,from,size/8)
292
Brice Goglin62502232006-12-11 11:24:37 +0100293static inline void put_be32(__be32 val, __be32 __iomem * p)
Al Viro40f6cff2006-11-20 13:48:32 -0500294{
Brice Goglin62502232006-12-11 11:24:37 +0100295 __raw_writel((__force __u32) val, (__force void __iomem *)p);
Al Viro40f6cff2006-11-20 13:48:32 -0500296}
297
Brice Goglin0da34b62006-05-23 06:10:15 -0400298static int
299myri10ge_send_cmd(struct myri10ge_priv *mgp, u32 cmd,
300 struct myri10ge_cmd *data, int atomic)
301{
302 struct mcp_cmd *buf;
303 char buf_bytes[sizeof(*buf) + 8];
304 struct mcp_cmd_response *response = mgp->cmd;
Brice Gogline700f9f2006-08-14 17:52:54 -0400305 char __iomem *cmd_addr = mgp->sram + MXGEFW_ETH_CMD;
Brice Goglin0da34b62006-05-23 06:10:15 -0400306 u32 dma_low, dma_high, result, value;
307 int sleep_total = 0;
308
309 /* ensure buf is aligned to 8 bytes */
310 buf = (struct mcp_cmd *)ALIGN((unsigned long)buf_bytes, 8);
311
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);
318
319 buf->response_addr.low = htonl(dma_low);
320 buf->response_addr.high = htonl(dma_high);
Al Viro40f6cff2006-11-20 13:48:32 -0500321 response->result = htonl(MYRI10GE_NO_RESPONSE_RESULT);
Brice Goglin0da34b62006-05-23 06:10:15 -0400322 mb();
323 myri10ge_pio_copy(cmd_addr, buf, sizeof(*buf));
324
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
328 * a 2.2ms margin
329 */
330 if (atomic) {
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;
335 sleep_total < 1000
Al Viro40f6cff2006-11-20 13:48:32 -0500336 && response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT);
Brice Goglin0da34b62006-05-23 06:10:15 -0400337 sleep_total += 10)
338 udelay(10);
339 } else {
340 /* use msleep for most command */
341 for (sleep_total = 0;
342 sleep_total < 15
Al Viro40f6cff2006-11-20 13:48:32 -0500343 && response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT);
Brice Goglin0da34b62006-05-23 06:10:15 -0400344 sleep_total++)
345 msleep(1);
346 }
347
348 result = ntohl(response->result);
349 value = ntohl(response->data);
350 if (result != MYRI10GE_NO_RESPONSE_RESULT) {
351 if (result == 0) {
352 data->data0 = value;
353 return 0;
Brice Goglin85a7ea12006-08-21 17:36:56 -0400354 } else if (result == MXGEFW_CMD_UNKNOWN) {
355 return -ENOSYS;
Brice Goglin0da34b62006-05-23 06:10:15 -0400356 } else {
357 dev_err(&mgp->pdev->dev,
358 "command %d failed, result = %d\n",
359 cmd, result);
360 return -ENXIO;
361 }
362 }
363
364 dev_err(&mgp->pdev->dev, "command %d timed out, result = %d\n",
365 cmd, result);
366 return -EAGAIN;
367}
368
369/*
370 * The eeprom strings on the lanaiX have the format
371 * SN=x\0
372 * MAC=x:x:x:x:x:x\0
373 * PT:ddd mmm xx xx:xx:xx xx\0
374 * PV:ddd mmm xx xx:xx:xx xx\0
375 */
376static int myri10ge_read_mac_addr(struct myri10ge_priv *mgp)
377{
378 char *ptr, *limit;
379 int i;
380
381 ptr = mgp->eeprom_strings;
382 limit = mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE;
383
384 while (*ptr != '\0' && ptr < limit) {
385 if (memcmp(ptr, "MAC=", 4) == 0) {
386 ptr += 4;
387 mgp->mac_addr_string = ptr;
388 for (i = 0; i < 6; i++) {
389 if ((ptr + 2) > limit)
390 goto abort;
391 mgp->mac_addr[i] =
392 simple_strtoul(ptr, &ptr, 16);
393 ptr += 1;
394 }
395 }
396 if (memcmp((const void *)ptr, "SN=", 3) == 0) {
397 ptr += 3;
398 mgp->serial_number = simple_strtoul(ptr, &ptr, 10);
399 }
400 while (ptr < limit && *ptr++) ;
401 }
402
403 return 0;
404
405abort:
406 dev_err(&mgp->pdev->dev, "failed to parse eeprom_strings\n");
407 return -ENXIO;
408}
409
410/*
411 * Enable or disable periodic RDMAs from the host to make certain
412 * chipsets resend dropped PCIe messages
413 */
414
415static void myri10ge_dummy_rdma(struct myri10ge_priv *mgp, int enable)
416{
417 char __iomem *submit;
Al Viro40f6cff2006-11-20 13:48:32 -0500418 __be32 buf[16];
Brice Goglin0da34b62006-05-23 06:10:15 -0400419 u32 dma_low, dma_high;
420 int i;
421
422 /* clear confirmation addr */
423 mgp->cmd->data = 0;
424 mb();
425
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
429 */
430 dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus);
431 dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus);
432
433 buf[0] = htonl(dma_high); /* confirm addr MSW */
434 buf[1] = htonl(dma_low); /* confirm addr LSW */
Al Viro40f6cff2006-11-20 13:48:32 -0500435 buf[2] = MYRI10GE_NO_CONFIRM_DATA; /* confirm data */
Brice Goglin0da34b62006-05-23 06:10:15 -0400436 buf[3] = htonl(dma_high); /* dummy addr MSW */
437 buf[4] = htonl(dma_low); /* dummy addr LSW */
438 buf[5] = htonl(enable); /* enable? */
439
Brice Gogline700f9f2006-08-14 17:52:54 -0400440 submit = mgp->sram + MXGEFW_BOOT_DUMMY_RDMA;
Brice Goglin0da34b62006-05-23 06:10:15 -0400441
442 myri10ge_pio_copy(submit, &buf, sizeof(buf));
443 for (i = 0; mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 20; i++)
444 msleep(1);
445 if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA)
446 dev_err(&mgp->pdev->dev, "dummy rdma %s failed\n",
447 (enable ? "enable" : "disable"));
448}
449
450static int
451myri10ge_validate_firmware(struct myri10ge_priv *mgp,
452 struct mcp_gen_header *hdr)
453{
454 struct device *dev = &mgp->pdev->dev;
Brice Goglin0da34b62006-05-23 06:10:15 -0400455
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));
459 return -EINVAL;
460 }
461
462 /* save firmware version for ethtool */
463 strncpy(mgp->fw_version, hdr->version, sizeof(mgp->fw_version));
464
Brice Goglin9dc6f0e2007-02-21 18:05:17 +0100465 sscanf(mgp->fw_version, "%d.%d.%d", &mgp->fw_ver_major,
466 &mgp->fw_ver_minor, &mgp->fw_ver_tiny);
Brice Goglin0da34b62006-05-23 06:10:15 -0400467
Brice Goglin9dc6f0e2007-02-21 18:05:17 +0100468 if (!(mgp->fw_ver_major == MXGEFW_VERSION_MAJOR
469 && mgp->fw_ver_minor == MXGEFW_VERSION_MINOR)) {
Brice Goglin0da34b62006-05-23 06:10:15 -0400470 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);
473 return -EINVAL;
474 }
475 return 0;
476}
477
478static int myri10ge_load_hotplug_firmware(struct myri10ge_priv *mgp, u32 * size)
479{
480 unsigned crc, reread_crc;
481 const struct firmware *fw;
482 struct device *dev = &mgp->pdev->dev;
483 struct mcp_gen_header *hdr;
484 size_t hdr_offset;
485 int status;
Brice Gogline4543582006-07-30 00:14:09 -0400486 unsigned i;
Brice Goglin0da34b62006-05-23 06:10:15 -0400487
488 if ((status = request_firmware(&fw, mgp->fw_name, dev)) < 0) {
489 dev_err(dev, "Unable to load %s firmware image via hotplug\n",
490 mgp->fw_name);
491 status = -EINVAL;
492 goto abort_with_nothing;
493 }
494
495 /* check size */
496
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);
500 status = -EINVAL;
501 goto abort_with_fw;
502 }
503
504 /* check id */
Al Viro40f6cff2006-11-20 13:48:32 -0500505 hdr_offset = ntohl(*(__be32 *) (fw->data + MCP_HEADER_PTR_OFFSET));
Brice Goglin0da34b62006-05-23 06:10:15 -0400506 if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > fw->size) {
507 dev_err(dev, "Bad firmware file\n");
508 status = -EINVAL;
509 goto abort_with_fw;
510 }
511 hdr = (void *)(fw->data + hdr_offset);
512
513 status = myri10ge_validate_firmware(mgp, hdr);
514 if (status != 0)
515 goto abort_with_fw;
516
517 crc = crc32(~0, fw->data, fw->size);
Brice Gogline4543582006-07-30 00:14:09 -0400518 for (i = 0; i < fw->size; i += 256) {
519 myri10ge_pio_copy(mgp->sram + MYRI10GE_FW_OFFSET + i,
520 fw->data + i,
521 min(256U, (unsigned)(fw->size - i)));
522 mb();
523 readb(mgp->sram);
Brice Goglinb10c0662006-06-08 10:25:00 -0400524 }
Brice Goglin0da34b62006-05-23 06:10:15 -0400525 /* 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);
531 status = -EIO;
532 goto abort_with_fw;
533 }
534 *size = (u32) fw->size;
535
536abort_with_fw:
537 release_firmware(fw);
538
539abort_with_nothing:
540 return status;
541}
542
543static int myri10ge_adopt_running_firmware(struct myri10ge_priv *mgp)
544{
545 struct mcp_gen_header *hdr;
546 struct device *dev = &mgp->pdev->dev;
547 const size_t bytes = sizeof(struct mcp_gen_header);
548 size_t hdr_offset;
549 int status;
550
551 /* find running firmware header */
552 hdr_offset = ntohl(__raw_readl(mgp->sram + MCP_HEADER_PTR_OFFSET));
553
554 if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > mgp->sram_size) {
555 dev_err(dev, "Running firmware has bad header offset (%d)\n",
556 (int)hdr_offset);
557 return -EIO;
558 }
559
560 /* copy header of running firmware from SRAM to host memory to
561 * validate firmware */
562 hdr = kmalloc(bytes, GFP_KERNEL);
563 if (hdr == NULL) {
564 dev_err(dev, "could not malloc firmware hdr\n");
565 return -ENOMEM;
566 }
567 memcpy_fromio(hdr, mgp->sram + hdr_offset, bytes);
568 status = myri10ge_validate_firmware(mgp, hdr);
569 kfree(hdr);
Brice Goglin9dc6f0e2007-02-21 18:05:17 +0100570
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,
580 mgp->fw_ver_tiny);
581 }
Brice Goglin0da34b62006-05-23 06:10:15 -0400582 return status;
583}
584
585static int myri10ge_load_firmware(struct myri10ge_priv *mgp)
586{
587 char __iomem *submit;
Al Viro40f6cff2006-11-20 13:48:32 -0500588 __be32 buf[16];
Brice Goglin0da34b62006-05-23 06:10:15 -0400589 u32 dma_low, dma_high, size;
590 int status, i;
591
Brice Goglinb10c0662006-06-08 10:25:00 -0400592 size = 0;
Brice Goglin0da34b62006-05-23 06:10:15 -0400593 status = myri10ge_load_hotplug_firmware(mgp, &size);
594 if (status) {
595 dev_warn(&mgp->pdev->dev, "hotplug firmware loading failed\n");
596
597 /* Do not attempt to adopt firmware if there
598 * was a bad crc */
599 if (status == -EIO)
600 return status;
601
602 status = myri10ge_adopt_running_firmware(mgp);
603 if (status != 0) {
604 dev_err(&mgp->pdev->dev,
605 "failed to adopt running firmware\n");
606 return status;
607 }
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"
613 ". For optimal\n");
614 dev_warn(&mgp->pdev->dev,
615 "performance consider loading optimized "
616 "firmware\n");
617 dev_warn(&mgp->pdev->dev, "via hotplug\n");
618 }
619
620 mgp->fw_name = "adopted";
621 mgp->tx.boundary = 2048;
622 return status;
623 }
624
625 /* clear confirmation addr */
626 mgp->cmd->data = 0;
627 mb();
628
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
632 */
633 dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus);
634 dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus);
635
636 buf[0] = htonl(dma_high); /* confirm addr MSW */
637 buf[1] = htonl(dma_low); /* confirm addr LSW */
Al Viro40f6cff2006-11-20 13:48:32 -0500638 buf[2] = MYRI10GE_NO_CONFIRM_DATA; /* confirm data */
Brice Goglin0da34b62006-05-23 06:10:15 -0400639
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
643 */
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 */
648
Brice Gogline700f9f2006-08-14 17:52:54 -0400649 submit = mgp->sram + MXGEFW_BOOT_HANDOFF;
Brice Goglin0da34b62006-05-23 06:10:15 -0400650
651 myri10ge_pio_copy(submit, &buf, sizeof(buf));
652 mb();
653 msleep(1);
654 mb();
655 i = 0;
656 while (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 20) {
657 msleep(1);
658 i++;
659 }
660 if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA) {
661 dev_err(&mgp->pdev->dev, "handoff failed\n");
662 return -ENXIO;
663 }
664 dev_info(&mgp->pdev->dev, "handoff confirmed\n");
Brice Goglin9a71db72006-07-21 15:49:32 -0400665 myri10ge_dummy_rdma(mgp, 1);
Brice Goglin0da34b62006-05-23 06:10:15 -0400666
667 return 0;
668}
669
670static int myri10ge_update_mac_address(struct myri10ge_priv *mgp, u8 * addr)
671{
672 struct myri10ge_cmd cmd;
673 int status;
674
675 cmd.data0 = ((addr[0] << 24) | (addr[1] << 16)
676 | (addr[2] << 8) | addr[3]);
677
678 cmd.data1 = ((addr[4] << 8) | (addr[5]));
679
680 status = myri10ge_send_cmd(mgp, MXGEFW_SET_MAC_ADDRESS, &cmd, 0);
681 return status;
682}
683
684static int myri10ge_change_pause(struct myri10ge_priv *mgp, int pause)
685{
686 struct myri10ge_cmd cmd;
687 int status, ctl;
688
689 ctl = pause ? MXGEFW_ENABLE_FLOW_CONTROL : MXGEFW_DISABLE_FLOW_CONTROL;
690 status = myri10ge_send_cmd(mgp, ctl, &cmd, 0);
691
692 if (status) {
693 printk(KERN_ERR
694 "myri10ge: %s: Failed to set flow control mode\n",
695 mgp->dev->name);
696 return status;
697 }
698 mgp->pause = pause;
699 return 0;
700}
701
702static void
703myri10ge_change_promisc(struct myri10ge_priv *mgp, int promisc, int atomic)
704{
705 struct myri10ge_cmd cmd;
706 int status, ctl;
707
708 ctl = promisc ? MXGEFW_ENABLE_PROMISC : MXGEFW_DISABLE_PROMISC;
709 status = myri10ge_send_cmd(mgp, ctl, &cmd, atomic);
710 if (status)
711 printk(KERN_ERR "myri10ge: %s: Failed to set promisc mode\n",
712 mgp->dev->name);
713}
714
715static int myri10ge_reset(struct myri10ge_priv *mgp)
716{
717 struct myri10ge_cmd cmd;
718 int status;
719 size_t bytes;
720 u32 len;
Brice Goglin34fdcce2007-03-07 20:00:45 +0100721 struct page *dmatest_page;
722 dma_addr_t dmatest_bus;
Brice Goglin0da34b62006-05-23 06:10:15 -0400723
724 /* try to send a reset command to the card to see if it
725 * is alive */
726 memset(&cmd, 0, sizeof(cmd));
727 status = myri10ge_send_cmd(mgp, MXGEFW_CMD_RESET, &cmd, 0);
728 if (status != 0) {
729 dev_err(&mgp->pdev->dev, "failed reset\n");
730 return -ENXIO;
731 }
Brice Goglin34fdcce2007-03-07 20:00:45 +0100732 dmatest_page = alloc_page(GFP_KERNEL);
733 if (!dmatest_page)
734 return -ENOMEM;
735 dmatest_bus = pci_map_page(mgp->pdev, dmatest_page, 0, PAGE_SIZE,
736 DMA_BIDIRECTIONAL);
Brice Goglin0da34b62006-05-23 06:10:15 -0400737
738 /* Now exchange information about interrupts */
739
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);
747
748 status |=
749 myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_ACK_OFFSET, &cmd, 0);
Al Viro40f6cff2006-11-20 13:48:32 -0500750 mgp->irq_claim = (__iomem __be32 *) (mgp->sram + cmd.data0);
Brice Goglindf30a742006-12-18 11:50:40 +0100751 status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_DEASSERT_OFFSET,
752 &cmd, 0);
753 mgp->irq_deassert = (__iomem __be32 *) (mgp->sram + cmd.data0);
Brice Goglin0da34b62006-05-23 06:10:15 -0400754
Brice Goglin0da34b62006-05-23 06:10:15 -0400755 status |= myri10ge_send_cmd
756 (mgp, MXGEFW_CMD_GET_INTR_COAL_DELAY_OFFSET, &cmd, 0);
Al Viro40f6cff2006-11-20 13:48:32 -0500757 mgp->intr_coal_delay_ptr = (__iomem __be32 *) (mgp->sram + cmd.data0);
Brice Goglin0da34b62006-05-23 06:10:15 -0400758 if (status != 0) {
759 dev_err(&mgp->pdev->dev, "failed set interrupt parameters\n");
760 return status;
761 }
Al Viro40f6cff2006-11-20 13:48:32 -0500762 put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr);
Brice Goglin0da34b62006-05-23 06:10:15 -0400763
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.
771 */
772
773 len = mgp->tx.boundary;
774
Brice Goglin34fdcce2007-03-07 20:00:45 +0100775 cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus);
776 cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus);
Brice Goglin0da34b62006-05-23 06:10:15 -0400777 cmd.data2 = len * 0x10000;
778 status = myri10ge_send_cmd(mgp, MXGEFW_DMA_TEST, &cmd, 0);
779 if (status == 0)
780 mgp->read_dma = ((cmd.data0 >> 16) * len * 2) /
781 (cmd.data0 & 0xffff);
782 else
783 dev_warn(&mgp->pdev->dev, "DMA read benchmark failed: %d\n",
784 status);
Brice Goglin34fdcce2007-03-07 20:00:45 +0100785 cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus);
786 cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus);
Brice Goglin0da34b62006-05-23 06:10:15 -0400787 cmd.data2 = len * 0x1;
788 status = myri10ge_send_cmd(mgp, MXGEFW_DMA_TEST, &cmd, 0);
789 if (status == 0)
790 mgp->write_dma = ((cmd.data0 >> 16) * len * 2) /
791 (cmd.data0 & 0xffff);
792 else
793 dev_warn(&mgp->pdev->dev, "DMA write benchmark failed: %d\n",
794 status);
795
Brice Goglin34fdcce2007-03-07 20:00:45 +0100796 cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus);
797 cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus);
Brice Goglin0da34b62006-05-23 06:10:15 -0400798 cmd.data2 = len * 0x10001;
799 status = myri10ge_send_cmd(mgp, MXGEFW_DMA_TEST, &cmd, 0);
800 if (status == 0)
801 mgp->read_write_dma = ((cmd.data0 >> 16) * len * 2 * 2) /
802 (cmd.data0 & 0xffff);
803 else
804 dev_warn(&mgp->pdev->dev,
805 "DMA read/write benchmark failed: %d\n", status);
806
Brice Goglin34fdcce2007-03-07 20:00:45 +0100807 pci_unmap_page(mgp->pdev, dmatest_bus, PAGE_SIZE, DMA_BIDIRECTIONAL);
808 put_page(dmatest_page);
809
Brice Goglin0da34b62006-05-23 06:10:15 -0400810 memset(mgp->rx_done.entry, 0, bytes);
811
812 /* reset mcp/driver shared state back to 0 */
813 mgp->tx.req = 0;
814 mgp->tx.done = 0;
815 mgp->tx.pkt_start = 0;
816 mgp->tx.pkt_done = 0;
817 mgp->rx_big.cnt = 0;
818 mgp->rx_small.cnt = 0;
819 mgp->rx_done.idx = 0;
820 mgp->rx_done.cnt = 0;
Brice Goglinc58ac5c2006-08-21 17:36:49 -0400821 mgp->link_changes = 0;
Brice Goglin0da34b62006-05-23 06:10:15 -0400822 status = myri10ge_update_mac_address(mgp, mgp->dev->dev_addr);
823 myri10ge_change_promisc(mgp, 0, 0);
824 myri10ge_change_pause(mgp, mgp->pause);
Brice Goglin9dc6f0e2007-02-21 18:05:17 +0100825 if (mgp->adopted_rx_filter_bug)
826 (void)myri10ge_send_cmd(mgp, MXGEFW_ENABLE_ALLMULTI, &cmd, 1);
Brice Goglin0da34b62006-05-23 06:10:15 -0400827 return status;
828}
829
830static inline void
831myri10ge_submit_8rx(struct mcp_kreq_ether_recv __iomem * dst,
832 struct mcp_kreq_ether_recv *src)
833{
Al Viro40f6cff2006-11-20 13:48:32 -0500834 __be32 low;
Brice Goglin0da34b62006-05-23 06:10:15 -0400835
836 low = src->addr_low;
Al Viro40f6cff2006-11-20 13:48:32 -0500837 src->addr_low = htonl(DMA_32BIT_MASK);
Brice Gogline67bda52006-12-05 17:26:27 +0100838 myri10ge_pio_copy(dst, src, 4 * sizeof(*src));
839 mb();
840 myri10ge_pio_copy(dst + 4, src + 4, 4 * sizeof(*src));
Brice Goglin0da34b62006-05-23 06:10:15 -0400841 mb();
842 src->addr_low = low;
Al Viro40f6cff2006-11-20 13:48:32 -0500843 put_be32(low, &dst->addr_low);
Brice Goglin0da34b62006-05-23 06:10:15 -0400844 mb();
845}
846
Al Viro40f6cff2006-11-20 13:48:32 -0500847static inline void myri10ge_vlan_ip_csum(struct sk_buff *skb, __wsum hw_csum)
Brice Goglin0da34b62006-05-23 06:10:15 -0400848{
849 struct vlan_hdr *vh = (struct vlan_hdr *)(skb->data);
850
Al Viro40f6cff2006-11-20 13:48:32 -0500851 if ((skb->protocol == htons(ETH_P_8021Q)) &&
Brice Goglin0da34b62006-05-23 06:10:15 -0400852 (vh->h_vlan_encapsulated_proto == htons(ETH_P_IP) ||
853 vh->h_vlan_encapsulated_proto == htons(ETH_P_IPV6))) {
854 skb->csum = hw_csum;
Patrick McHardy84fa7932006-08-29 16:44:56 -0700855 skb->ip_summed = CHECKSUM_COMPLETE;
Brice Goglin0da34b62006-05-23 06:10:15 -0400856 }
857}
858
Brice Goglindd50f332006-12-11 11:25:09 +0100859static inline void
860myri10ge_rx_skb_build(struct sk_buff *skb, u8 * va,
861 struct skb_frag_struct *rx_frags, int len, int hlen)
862{
863 struct skb_frag_struct *skb_frags;
864
865 skb->len = skb->data_len = len;
866 skb->truesize = len + sizeof(struct sk_buff);
867 /* attach the page(s) */
868
869 skb_frags = skb_shinfo(skb)->frags;
870 while (len > 0) {
871 memcpy(skb_frags, rx_frags, sizeof(*skb_frags));
872 len -= rx_frags->size;
873 skb_frags++;
874 rx_frags++;
875 skb_shinfo(skb)->nr_frags++;
876 }
877
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
881 * manually */
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;
886 skb->tail += hlen;
887 skb_pull(skb, MXGEFW_PAD);
888}
889
890static void
891myri10ge_alloc_rx_pages(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx,
892 int bytes, int watchdog)
893{
894 struct page *page;
895 int idx;
896
897 if (unlikely(rx->watchdog_needed && !watchdog))
898 return;
899
900 /* try to refill entire ring */
901 while (rx->fill_cnt != (rx->cnt + rx->mask + 1)) {
902 idx = rx->fill_cnt & rx->mask;
903
904 if ((bytes < MYRI10GE_ALLOC_SIZE / 2) &&
905 (rx->page_offset + bytes <= MYRI10GE_ALLOC_SIZE)) {
906 /* we can use part of previous page */
907 get_page(rx->page);
Brice Goglinb52a8b72007-03-21 19:46:57 +0100908#if MYRI10GE_ALLOC_SIZE > 4096
909 /* Firmware cannot cross 4K boundary.. */
910 if ((rx->page_offset >> 12) !=
911 ((rx->page_offset + bytes - 1) >> 12)) {
912 rx->page_offset =
913 (rx->page_offset + bytes) & ~4095;
914 }
915#endif
Brice Goglindd50f332006-12-11 11:25:09 +0100916 } else {
917 /* we need a new page */
918 page =
919 alloc_pages(GFP_ATOMIC | __GFP_COMP,
920 MYRI10GE_ALLOC_ORDER);
921 if (unlikely(page == NULL)) {
922 if (rx->fill_cnt - rx->cnt < 16)
923 rx->watchdog_needed = 1;
924 return;
925 }
926 rx->page = page;
927 rx->page_offset = 0;
928 rx->bus = pci_map_page(mgp->pdev, page, 0,
929 MYRI10GE_ALLOC_SIZE,
930 PCI_DMA_FROMDEVICE);
931 }
932 rx->info[idx].page = rx->page;
933 rx->info[idx].page_offset = rx->page_offset;
934 /* note that this is the address of the start of the
935 * page */
936 pci_unmap_addr_set(&rx->info[idx], bus, rx->bus);
937 rx->shadow[idx].addr_low =
938 htonl(MYRI10GE_LOWPART_TO_U32(rx->bus) + rx->page_offset);
939 rx->shadow[idx].addr_high =
940 htonl(MYRI10GE_HIGHPART_TO_U32(rx->bus));
941
942 /* start next packet on a cacheline boundary */
943 rx->page_offset += SKB_DATA_ALIGN(bytes);
944 rx->fill_cnt++;
945
946 /* copy 8 descriptors to the firmware at a time */
947 if ((idx & 7) == 7) {
948 if (rx->wc_fifo == NULL)
949 myri10ge_submit_8rx(&rx->lanai[idx - 7],
950 &rx->shadow[idx - 7]);
951 else {
952 mb();
953 myri10ge_pio_copy(rx->wc_fifo,
954 &rx->shadow[idx - 7], 64);
955 }
956 }
957 }
958}
959
960static inline void
961myri10ge_unmap_rx_page(struct pci_dev *pdev,
962 struct myri10ge_rx_buffer_state *info, int bytes)
963{
964 /* unmap the recvd page if we're the only or last user of it */
965 if (bytes >= MYRI10GE_ALLOC_SIZE / 2 ||
966 (info->page_offset + 2 * bytes) > MYRI10GE_ALLOC_SIZE) {
967 pci_unmap_page(pdev, (pci_unmap_addr(info, bus)
968 & ~(MYRI10GE_ALLOC_SIZE - 1)),
969 MYRI10GE_ALLOC_SIZE, PCI_DMA_FROMDEVICE);
970 }
971}
972
973#define MYRI10GE_HLEN 64 /* The number of bytes to copy from a
974 * page into an skb */
975
976static inline int
Brice Goglin52ea6fb2006-12-11 11:26:12 +0100977myri10ge_rx_done(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx,
978 int bytes, int len, __wsum csum)
Brice Goglindd50f332006-12-11 11:25:09 +0100979{
980 struct sk_buff *skb;
981 struct skb_frag_struct rx_frags[MYRI10GE_MAX_FRAGS_PER_FRAME];
982 int i, idx, hlen, remainder;
983 struct pci_dev *pdev = mgp->pdev;
984 struct net_device *dev = mgp->dev;
985 u8 *va;
986
987 len += MXGEFW_PAD;
988 idx = rx->cnt & rx->mask;
989 va = page_address(rx->info[idx].page) + rx->info[idx].page_offset;
990 prefetch(va);
991 /* Fill skb_frag_struct(s) with data from our receive */
992 for (i = 0, remainder = len; remainder > 0; i++) {
993 myri10ge_unmap_rx_page(pdev, &rx->info[idx], bytes);
994 rx_frags[i].page = rx->info[idx].page;
995 rx_frags[i].page_offset = rx->info[idx].page_offset;
996 if (remainder < MYRI10GE_ALLOC_SIZE)
997 rx_frags[i].size = remainder;
998 else
999 rx_frags[i].size = MYRI10GE_ALLOC_SIZE;
1000 rx->cnt++;
1001 idx = rx->cnt & rx->mask;
1002 remainder -= MYRI10GE_ALLOC_SIZE;
1003 }
1004
1005 hlen = MYRI10GE_HLEN > len ? len : MYRI10GE_HLEN;
1006
1007 /* allocate an skb to attach the page(s) to. */
1008
1009 skb = netdev_alloc_skb(dev, MYRI10GE_HLEN + 16);
1010 if (unlikely(skb == NULL)) {
1011 mgp->stats.rx_dropped++;
1012 do {
1013 i--;
1014 put_page(rx_frags[i].page);
1015 } while (i != 0);
1016 return 0;
1017 }
1018
1019 /* Attach the pages to the skb, and trim off any padding */
1020 myri10ge_rx_skb_build(skb, va, rx_frags, len, hlen);
1021 if (skb_shinfo(skb)->frags[0].size <= 0) {
1022 put_page(skb_shinfo(skb)->frags[0].page);
1023 skb_shinfo(skb)->nr_frags = 0;
1024 }
1025 skb->protocol = eth_type_trans(skb, dev);
1026 skb->dev = dev;
1027
1028 if (mgp->csum_flag) {
1029 if ((skb->protocol == htons(ETH_P_IP)) ||
1030 (skb->protocol == htons(ETH_P_IPV6))) {
1031 skb->csum = csum;
1032 skb->ip_summed = CHECKSUM_COMPLETE;
1033 } else
1034 myri10ge_vlan_ip_csum(skb, csum);
1035 }
1036 netif_receive_skb(skb);
1037 dev->last_rx = jiffies;
1038 return 1;
1039}
1040
Brice Goglin0da34b62006-05-23 06:10:15 -04001041static inline void myri10ge_tx_done(struct myri10ge_priv *mgp, int mcp_index)
1042{
1043 struct pci_dev *pdev = mgp->pdev;
1044 struct myri10ge_tx_buf *tx = &mgp->tx;
1045 struct sk_buff *skb;
1046 int idx, len;
1047 int limit = 0;
1048
1049 while (tx->pkt_done != mcp_index) {
1050 idx = tx->done & tx->mask;
1051 skb = tx->info[idx].skb;
1052
1053 /* Mark as free */
1054 tx->info[idx].skb = NULL;
1055 if (tx->info[idx].last) {
1056 tx->pkt_done++;
1057 tx->info[idx].last = 0;
1058 }
1059 tx->done++;
1060 len = pci_unmap_len(&tx->info[idx], len);
1061 pci_unmap_len_set(&tx->info[idx], len, 0);
1062 if (skb) {
1063 mgp->stats.tx_bytes += skb->len;
1064 mgp->stats.tx_packets++;
1065 dev_kfree_skb_irq(skb);
1066 if (len)
1067 pci_unmap_single(pdev,
1068 pci_unmap_addr(&tx->info[idx],
1069 bus), len,
1070 PCI_DMA_TODEVICE);
1071 } else {
1072 if (len)
1073 pci_unmap_page(pdev,
1074 pci_unmap_addr(&tx->info[idx],
1075 bus), len,
1076 PCI_DMA_TODEVICE);
1077 }
1078
1079 /* limit potential for livelock by only handling
1080 * 2 full tx rings per call */
1081 if (unlikely(++limit > 2 * tx->mask))
1082 break;
1083 }
1084 /* start the queue if we've stopped it */
1085 if (netif_queue_stopped(mgp->dev)
1086 && tx->req - tx->done < (tx->mask >> 1)) {
1087 mgp->wake_queue++;
1088 netif_wake_queue(mgp->dev);
1089 }
1090}
1091
1092static inline void myri10ge_clean_rx_done(struct myri10ge_priv *mgp, int *limit)
1093{
1094 struct myri10ge_rx_done *rx_done = &mgp->rx_done;
1095 unsigned long rx_bytes = 0;
1096 unsigned long rx_packets = 0;
1097 unsigned long rx_ok;
1098
1099 int idx = rx_done->idx;
1100 int cnt = rx_done->cnt;
1101 u16 length;
Al Viro40f6cff2006-11-20 13:48:32 -05001102 __wsum checksum;
Brice Goglin0da34b62006-05-23 06:10:15 -04001103
1104 while (rx_done->entry[idx].length != 0 && *limit != 0) {
1105 length = ntohs(rx_done->entry[idx].length);
1106 rx_done->entry[idx].length = 0;
Al Viro40f6cff2006-11-20 13:48:32 -05001107 checksum = csum_unfold(rx_done->entry[idx].checksum);
Brice Goglin0da34b62006-05-23 06:10:15 -04001108 if (length <= mgp->small_bytes)
Brice Goglin52ea6fb2006-12-11 11:26:12 +01001109 rx_ok = myri10ge_rx_done(mgp, &mgp->rx_small,
1110 mgp->small_bytes,
1111 length, checksum);
Brice Goglin0da34b62006-05-23 06:10:15 -04001112 else
Brice Goglin52ea6fb2006-12-11 11:26:12 +01001113 rx_ok = myri10ge_rx_done(mgp, &mgp->rx_big,
1114 mgp->big_bytes,
1115 length, checksum);
Brice Goglin0da34b62006-05-23 06:10:15 -04001116 rx_packets += rx_ok;
1117 rx_bytes += rx_ok * (unsigned long)length;
1118 cnt++;
1119 idx = cnt & (myri10ge_max_intr_slots - 1);
1120
1121 /* limit potential for livelock by only handling a
1122 * limited number of frames. */
1123 (*limit)--;
1124 }
1125 rx_done->idx = idx;
1126 rx_done->cnt = cnt;
1127 mgp->stats.rx_packets += rx_packets;
1128 mgp->stats.rx_bytes += rx_bytes;
Brice Goglinc7dab992006-12-11 11:25:42 +01001129
1130 /* restock receive rings if needed */
1131 if (mgp->rx_small.fill_cnt - mgp->rx_small.cnt < myri10ge_fill_thresh)
1132 myri10ge_alloc_rx_pages(mgp, &mgp->rx_small,
1133 mgp->small_bytes + MXGEFW_PAD, 0);
1134 if (mgp->rx_big.fill_cnt - mgp->rx_big.cnt < myri10ge_fill_thresh)
1135 myri10ge_alloc_rx_pages(mgp, &mgp->rx_big, mgp->big_bytes, 0);
1136
Brice Goglin0da34b62006-05-23 06:10:15 -04001137}
1138
1139static inline void myri10ge_check_statblock(struct myri10ge_priv *mgp)
1140{
1141 struct mcp_irq_data *stats = mgp->fw_stats;
1142
1143 if (unlikely(stats->stats_updated)) {
1144 if (mgp->link_state != stats->link_up) {
1145 mgp->link_state = stats->link_up;
1146 if (mgp->link_state) {
Brice Goglinc58ac5c2006-08-21 17:36:49 -04001147 if (netif_msg_link(mgp))
1148 printk(KERN_INFO
1149 "myri10ge: %s: link up\n",
1150 mgp->dev->name);
Brice Goglin0da34b62006-05-23 06:10:15 -04001151 netif_carrier_on(mgp->dev);
Brice Goglinc58ac5c2006-08-21 17:36:49 -04001152 mgp->link_changes++;
Brice Goglin0da34b62006-05-23 06:10:15 -04001153 } else {
Brice Goglinc58ac5c2006-08-21 17:36:49 -04001154 if (netif_msg_link(mgp))
1155 printk(KERN_INFO
1156 "myri10ge: %s: link down\n",
1157 mgp->dev->name);
Brice Goglin0da34b62006-05-23 06:10:15 -04001158 netif_carrier_off(mgp->dev);
Brice Goglinc58ac5c2006-08-21 17:36:49 -04001159 mgp->link_changes++;
Brice Goglin0da34b62006-05-23 06:10:15 -04001160 }
1161 }
1162 if (mgp->rdma_tags_available !=
1163 ntohl(mgp->fw_stats->rdma_tags_available)) {
1164 mgp->rdma_tags_available =
1165 ntohl(mgp->fw_stats->rdma_tags_available);
1166 printk(KERN_WARNING "myri10ge: %s: RDMA timed out! "
1167 "%d tags left\n", mgp->dev->name,
1168 mgp->rdma_tags_available);
1169 }
1170 mgp->down_cnt += stats->link_down;
1171 if (stats->link_down)
1172 wake_up(&mgp->down_wq);
1173 }
1174}
1175
1176static int myri10ge_poll(struct net_device *netdev, int *budget)
1177{
1178 struct myri10ge_priv *mgp = netdev_priv(netdev);
1179 struct myri10ge_rx_done *rx_done = &mgp->rx_done;
1180 int limit, orig_limit, work_done;
1181
1182 /* process as many rx events as NAPI will allow */
1183 limit = min(*budget, netdev->quota);
1184 orig_limit = limit;
1185 myri10ge_clean_rx_done(mgp, &limit);
1186 work_done = orig_limit - limit;
1187 *budget -= work_done;
1188 netdev->quota -= work_done;
1189
1190 if (rx_done->entry[rx_done->idx].length == 0 || !netif_running(netdev)) {
1191 netif_rx_complete(netdev);
Al Viro40f6cff2006-11-20 13:48:32 -05001192 put_be32(htonl(3), mgp->irq_claim);
Brice Goglin0da34b62006-05-23 06:10:15 -04001193 return 0;
1194 }
1195 return 1;
1196}
1197
David Howells7d12e782006-10-05 14:55:46 +01001198static irqreturn_t myri10ge_intr(int irq, void *arg)
Brice Goglin0da34b62006-05-23 06:10:15 -04001199{
1200 struct myri10ge_priv *mgp = arg;
1201 struct mcp_irq_data *stats = mgp->fw_stats;
1202 struct myri10ge_tx_buf *tx = &mgp->tx;
1203 u32 send_done_count;
1204 int i;
1205
1206 /* make sure it is our IRQ, and that the DMA has finished */
1207 if (unlikely(!stats->valid))
1208 return (IRQ_NONE);
1209
1210 /* low bit indicates receives are present, so schedule
1211 * napi poll handler */
1212 if (stats->valid & 1)
1213 netif_rx_schedule(mgp->dev);
1214
1215 if (!mgp->msi_enabled) {
Al Viro40f6cff2006-11-20 13:48:32 -05001216 put_be32(0, mgp->irq_deassert);
Brice Goglin0da34b62006-05-23 06:10:15 -04001217 if (!myri10ge_deassert_wait)
1218 stats->valid = 0;
1219 mb();
1220 } else
1221 stats->valid = 0;
1222
1223 /* Wait for IRQ line to go low, if using INTx */
1224 i = 0;
1225 while (1) {
1226 i++;
1227 /* check for transmit completes and receives */
1228 send_done_count = ntohl(stats->send_done_count);
1229 if (send_done_count != tx->pkt_done)
1230 myri10ge_tx_done(mgp, (int)send_done_count);
1231 if (unlikely(i > myri10ge_max_irq_loops)) {
1232 printk(KERN_WARNING "myri10ge: %s: irq stuck?\n",
1233 mgp->dev->name);
1234 stats->valid = 0;
1235 schedule_work(&mgp->watchdog_work);
1236 }
1237 if (likely(stats->valid == 0))
1238 break;
1239 cpu_relax();
1240 barrier();
1241 }
1242
1243 myri10ge_check_statblock(mgp);
1244
Al Viro40f6cff2006-11-20 13:48:32 -05001245 put_be32(htonl(3), mgp->irq_claim + 1);
Brice Goglin0da34b62006-05-23 06:10:15 -04001246 return (IRQ_HANDLED);
1247}
1248
1249static int
1250myri10ge_get_settings(struct net_device *netdev, struct ethtool_cmd *cmd)
1251{
1252 cmd->autoneg = AUTONEG_DISABLE;
1253 cmd->speed = SPEED_10000;
1254 cmd->duplex = DUPLEX_FULL;
1255 return 0;
1256}
1257
1258static void
1259myri10ge_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info)
1260{
1261 struct myri10ge_priv *mgp = netdev_priv(netdev);
1262
1263 strlcpy(info->driver, "myri10ge", sizeof(info->driver));
1264 strlcpy(info->version, MYRI10GE_VERSION_STR, sizeof(info->version));
1265 strlcpy(info->fw_version, mgp->fw_version, sizeof(info->fw_version));
1266 strlcpy(info->bus_info, pci_name(mgp->pdev), sizeof(info->bus_info));
1267}
1268
1269static int
1270myri10ge_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal)
1271{
1272 struct myri10ge_priv *mgp = netdev_priv(netdev);
1273 coal->rx_coalesce_usecs = mgp->intr_coal_delay;
1274 return 0;
1275}
1276
1277static int
1278myri10ge_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal)
1279{
1280 struct myri10ge_priv *mgp = netdev_priv(netdev);
1281
1282 mgp->intr_coal_delay = coal->rx_coalesce_usecs;
Al Viro40f6cff2006-11-20 13:48:32 -05001283 put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr);
Brice Goglin0da34b62006-05-23 06:10:15 -04001284 return 0;
1285}
1286
1287static void
1288myri10ge_get_pauseparam(struct net_device *netdev,
1289 struct ethtool_pauseparam *pause)
1290{
1291 struct myri10ge_priv *mgp = netdev_priv(netdev);
1292
1293 pause->autoneg = 0;
1294 pause->rx_pause = mgp->pause;
1295 pause->tx_pause = mgp->pause;
1296}
1297
1298static int
1299myri10ge_set_pauseparam(struct net_device *netdev,
1300 struct ethtool_pauseparam *pause)
1301{
1302 struct myri10ge_priv *mgp = netdev_priv(netdev);
1303
1304 if (pause->tx_pause != mgp->pause)
1305 return myri10ge_change_pause(mgp, pause->tx_pause);
1306 if (pause->rx_pause != mgp->pause)
1307 return myri10ge_change_pause(mgp, pause->tx_pause);
1308 if (pause->autoneg != 0)
1309 return -EINVAL;
1310 return 0;
1311}
1312
1313static void
1314myri10ge_get_ringparam(struct net_device *netdev,
1315 struct ethtool_ringparam *ring)
1316{
1317 struct myri10ge_priv *mgp = netdev_priv(netdev);
1318
1319 ring->rx_mini_max_pending = mgp->rx_small.mask + 1;
1320 ring->rx_max_pending = mgp->rx_big.mask + 1;
1321 ring->rx_jumbo_max_pending = 0;
1322 ring->tx_max_pending = mgp->rx_small.mask + 1;
1323 ring->rx_mini_pending = ring->rx_mini_max_pending;
1324 ring->rx_pending = ring->rx_max_pending;
1325 ring->rx_jumbo_pending = ring->rx_jumbo_max_pending;
1326 ring->tx_pending = ring->tx_max_pending;
1327}
1328
1329static u32 myri10ge_get_rx_csum(struct net_device *netdev)
1330{
1331 struct myri10ge_priv *mgp = netdev_priv(netdev);
1332 if (mgp->csum_flag)
1333 return 1;
1334 else
1335 return 0;
1336}
1337
1338static int myri10ge_set_rx_csum(struct net_device *netdev, u32 csum_enabled)
1339{
1340 struct myri10ge_priv *mgp = netdev_priv(netdev);
1341 if (csum_enabled)
1342 mgp->csum_flag = MXGEFW_FLAGS_CKSUM;
1343 else
1344 mgp->csum_flag = 0;
1345 return 0;
1346}
1347
1348static const char myri10ge_gstrings_stats[][ETH_GSTRING_LEN] = {
1349 "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
1350 "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
1351 "rx_length_errors", "rx_over_errors", "rx_crc_errors",
1352 "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
1353 "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
1354 "tx_heartbeat_errors", "tx_window_errors",
1355 /* device-specific stats */
Brice Goglin2c1a1082006-07-03 18:16:46 -04001356 "tx_boundary", "WC", "irq", "MSI",
Brice Goglin0da34b62006-05-23 06:10:15 -04001357 "read_dma_bw_MBs", "write_dma_bw_MBs", "read_write_dma_bw_MBs",
1358 "serial_number", "tx_pkt_start", "tx_pkt_done",
1359 "tx_req", "tx_done", "rx_small_cnt", "rx_big_cnt",
1360 "wake_queue", "stop_queue", "watchdog_resets", "tx_linearized",
Brice Goglinc58ac5c2006-08-21 17:36:49 -04001361 "link_changes", "link_up", "dropped_link_overflow",
Brice Goglin85a7ea12006-08-21 17:36:56 -04001362 "dropped_link_error_or_filtered", "dropped_multicast_filtered",
Brice Goglin0da34b62006-05-23 06:10:15 -04001363 "dropped_runt", "dropped_overrun", "dropped_no_small_buffer",
1364 "dropped_no_big_buffer"
1365};
1366
1367#define MYRI10GE_NET_STATS_LEN 21
1368#define MYRI10GE_STATS_LEN sizeof(myri10ge_gstrings_stats) / ETH_GSTRING_LEN
1369
1370static void
1371myri10ge_get_strings(struct net_device *netdev, u32 stringset, u8 * data)
1372{
1373 switch (stringset) {
1374 case ETH_SS_STATS:
1375 memcpy(data, *myri10ge_gstrings_stats,
1376 sizeof(myri10ge_gstrings_stats));
1377 break;
1378 }
1379}
1380
1381static int myri10ge_get_stats_count(struct net_device *netdev)
1382{
1383 return MYRI10GE_STATS_LEN;
1384}
1385
1386static void
1387myri10ge_get_ethtool_stats(struct net_device *netdev,
1388 struct ethtool_stats *stats, u64 * data)
1389{
1390 struct myri10ge_priv *mgp = netdev_priv(netdev);
1391 int i;
1392
1393 for (i = 0; i < MYRI10GE_NET_STATS_LEN; i++)
1394 data[i] = ((unsigned long *)&mgp->stats)[i];
1395
Brice Goglin2c1a1082006-07-03 18:16:46 -04001396 data[i++] = (unsigned int)mgp->tx.boundary;
Brice Goglin276e26c2007-03-07 20:02:32 +01001397 data[i++] = (unsigned int)mgp->wc_enabled;
Brice Goglin2c1a1082006-07-03 18:16:46 -04001398 data[i++] = (unsigned int)mgp->pdev->irq;
1399 data[i++] = (unsigned int)mgp->msi_enabled;
Brice Goglin0da34b62006-05-23 06:10:15 -04001400 data[i++] = (unsigned int)mgp->read_dma;
1401 data[i++] = (unsigned int)mgp->write_dma;
1402 data[i++] = (unsigned int)mgp->read_write_dma;
1403 data[i++] = (unsigned int)mgp->serial_number;
1404 data[i++] = (unsigned int)mgp->tx.pkt_start;
1405 data[i++] = (unsigned int)mgp->tx.pkt_done;
1406 data[i++] = (unsigned int)mgp->tx.req;
1407 data[i++] = (unsigned int)mgp->tx.done;
1408 data[i++] = (unsigned int)mgp->rx_small.cnt;
1409 data[i++] = (unsigned int)mgp->rx_big.cnt;
1410 data[i++] = (unsigned int)mgp->wake_queue;
1411 data[i++] = (unsigned int)mgp->stop_queue;
1412 data[i++] = (unsigned int)mgp->watchdog_resets;
1413 data[i++] = (unsigned int)mgp->tx_linearized;
Brice Goglinc58ac5c2006-08-21 17:36:49 -04001414 data[i++] = (unsigned int)mgp->link_changes;
Brice Goglin0da34b62006-05-23 06:10:15 -04001415 data[i++] = (unsigned int)ntohl(mgp->fw_stats->link_up);
1416 data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_link_overflow);
1417 data[i++] =
1418 (unsigned int)ntohl(mgp->fw_stats->dropped_link_error_or_filtered);
Brice Goglin85a7ea12006-08-21 17:36:56 -04001419 data[i++] =
1420 (unsigned int)ntohl(mgp->fw_stats->dropped_multicast_filtered);
Brice Goglin0da34b62006-05-23 06:10:15 -04001421 data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_runt);
1422 data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_overrun);
1423 data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_no_small_buffer);
1424 data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_no_big_buffer);
1425}
1426
Brice Goglinc58ac5c2006-08-21 17:36:49 -04001427static void myri10ge_set_msglevel(struct net_device *netdev, u32 value)
1428{
1429 struct myri10ge_priv *mgp = netdev_priv(netdev);
1430 mgp->msg_enable = value;
1431}
1432
1433static u32 myri10ge_get_msglevel(struct net_device *netdev)
1434{
1435 struct myri10ge_priv *mgp = netdev_priv(netdev);
1436 return mgp->msg_enable;
1437}
1438
Jeff Garzik7282d492006-09-13 14:30:00 -04001439static const struct ethtool_ops myri10ge_ethtool_ops = {
Brice Goglin0da34b62006-05-23 06:10:15 -04001440 .get_settings = myri10ge_get_settings,
1441 .get_drvinfo = myri10ge_get_drvinfo,
1442 .get_coalesce = myri10ge_get_coalesce,
1443 .set_coalesce = myri10ge_set_coalesce,
1444 .get_pauseparam = myri10ge_get_pauseparam,
1445 .set_pauseparam = myri10ge_set_pauseparam,
1446 .get_ringparam = myri10ge_get_ringparam,
1447 .get_rx_csum = myri10ge_get_rx_csum,
1448 .set_rx_csum = myri10ge_set_rx_csum,
1449 .get_tx_csum = ethtool_op_get_tx_csum,
Brice Goglinb10c0662006-06-08 10:25:00 -04001450 .set_tx_csum = ethtool_op_set_tx_hw_csum,
Brice Goglin0da34b62006-05-23 06:10:15 -04001451 .get_sg = ethtool_op_get_sg,
1452 .set_sg = ethtool_op_set_sg,
Brice Goglin0da34b62006-05-23 06:10:15 -04001453 .get_tso = ethtool_op_get_tso,
1454 .set_tso = ethtool_op_set_tso,
Brice Goglin0da34b62006-05-23 06:10:15 -04001455 .get_strings = myri10ge_get_strings,
1456 .get_stats_count = myri10ge_get_stats_count,
Brice Goglinc58ac5c2006-08-21 17:36:49 -04001457 .get_ethtool_stats = myri10ge_get_ethtool_stats,
1458 .set_msglevel = myri10ge_set_msglevel,
1459 .get_msglevel = myri10ge_get_msglevel
Brice Goglin0da34b62006-05-23 06:10:15 -04001460};
1461
1462static int myri10ge_allocate_rings(struct net_device *dev)
1463{
1464 struct myri10ge_priv *mgp;
1465 struct myri10ge_cmd cmd;
1466 int tx_ring_size, rx_ring_size;
1467 int tx_ring_entries, rx_ring_entries;
1468 int i, status;
1469 size_t bytes;
1470
1471 mgp = netdev_priv(dev);
1472
1473 /* get ring sizes */
1474
1475 status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_RING_SIZE, &cmd, 0);
1476 tx_ring_size = cmd.data0;
1477 status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_RX_RING_SIZE, &cmd, 0);
Brice Goglin355c7262007-03-07 19:59:52 +01001478 if (status != 0)
1479 return status;
Brice Goglin0da34b62006-05-23 06:10:15 -04001480 rx_ring_size = cmd.data0;
1481
1482 tx_ring_entries = tx_ring_size / sizeof(struct mcp_kreq_ether_send);
1483 rx_ring_entries = rx_ring_size / sizeof(struct mcp_dma_addr);
1484 mgp->tx.mask = tx_ring_entries - 1;
1485 mgp->rx_small.mask = mgp->rx_big.mask = rx_ring_entries - 1;
1486
Brice Goglin355c7262007-03-07 19:59:52 +01001487 status = -ENOMEM;
1488
Brice Goglin0da34b62006-05-23 06:10:15 -04001489 /* allocate the host shadow rings */
1490
1491 bytes = 8 + (MYRI10GE_MAX_SEND_DESC_TSO + 4)
1492 * sizeof(*mgp->tx.req_list);
1493 mgp->tx.req_bytes = kzalloc(bytes, GFP_KERNEL);
1494 if (mgp->tx.req_bytes == NULL)
1495 goto abort_with_nothing;
1496
1497 /* ensure req_list entries are aligned to 8 bytes */
1498 mgp->tx.req_list = (struct mcp_kreq_ether_send *)
1499 ALIGN((unsigned long)mgp->tx.req_bytes, 8);
1500
1501 bytes = rx_ring_entries * sizeof(*mgp->rx_small.shadow);
1502 mgp->rx_small.shadow = kzalloc(bytes, GFP_KERNEL);
1503 if (mgp->rx_small.shadow == NULL)
1504 goto abort_with_tx_req_bytes;
1505
1506 bytes = rx_ring_entries * sizeof(*mgp->rx_big.shadow);
1507 mgp->rx_big.shadow = kzalloc(bytes, GFP_KERNEL);
1508 if (mgp->rx_big.shadow == NULL)
1509 goto abort_with_rx_small_shadow;
1510
1511 /* allocate the host info rings */
1512
1513 bytes = tx_ring_entries * sizeof(*mgp->tx.info);
1514 mgp->tx.info = kzalloc(bytes, GFP_KERNEL);
1515 if (mgp->tx.info == NULL)
1516 goto abort_with_rx_big_shadow;
1517
1518 bytes = rx_ring_entries * sizeof(*mgp->rx_small.info);
1519 mgp->rx_small.info = kzalloc(bytes, GFP_KERNEL);
1520 if (mgp->rx_small.info == NULL)
1521 goto abort_with_tx_info;
1522
1523 bytes = rx_ring_entries * sizeof(*mgp->rx_big.info);
1524 mgp->rx_big.info = kzalloc(bytes, GFP_KERNEL);
1525 if (mgp->rx_big.info == NULL)
1526 goto abort_with_rx_small_info;
1527
1528 /* Fill the receive rings */
Brice Goglinc7dab992006-12-11 11:25:42 +01001529 mgp->rx_big.cnt = 0;
1530 mgp->rx_small.cnt = 0;
1531 mgp->rx_big.fill_cnt = 0;
1532 mgp->rx_small.fill_cnt = 0;
1533 mgp->rx_small.page_offset = MYRI10GE_ALLOC_SIZE;
1534 mgp->rx_big.page_offset = MYRI10GE_ALLOC_SIZE;
1535 mgp->rx_small.watchdog_needed = 0;
1536 mgp->rx_big.watchdog_needed = 0;
1537 myri10ge_alloc_rx_pages(mgp, &mgp->rx_small,
1538 mgp->small_bytes + MXGEFW_PAD, 0);
Brice Goglin0da34b62006-05-23 06:10:15 -04001539
Brice Goglinc7dab992006-12-11 11:25:42 +01001540 if (mgp->rx_small.fill_cnt < mgp->rx_small.mask + 1) {
1541 printk(KERN_ERR "myri10ge: %s: alloced only %d small bufs\n",
1542 dev->name, mgp->rx_small.fill_cnt);
1543 goto abort_with_rx_small_ring;
Brice Goglin0da34b62006-05-23 06:10:15 -04001544 }
1545
Brice Goglinc7dab992006-12-11 11:25:42 +01001546 myri10ge_alloc_rx_pages(mgp, &mgp->rx_big, mgp->big_bytes, 0);
1547 if (mgp->rx_big.fill_cnt < mgp->rx_big.mask + 1) {
1548 printk(KERN_ERR "myri10ge: %s: alloced only %d big bufs\n",
1549 dev->name, mgp->rx_big.fill_cnt);
1550 goto abort_with_rx_big_ring;
Brice Goglin0da34b62006-05-23 06:10:15 -04001551 }
1552
1553 return 0;
1554
1555abort_with_rx_big_ring:
Brice Goglinc7dab992006-12-11 11:25:42 +01001556 for (i = mgp->rx_big.cnt; i < mgp->rx_big.fill_cnt; i++) {
1557 int idx = i & mgp->rx_big.mask;
1558 myri10ge_unmap_rx_page(mgp->pdev, &mgp->rx_big.info[idx],
1559 mgp->big_bytes);
1560 put_page(mgp->rx_big.info[idx].page);
Brice Goglin0da34b62006-05-23 06:10:15 -04001561 }
1562
1563abort_with_rx_small_ring:
Brice Goglinc7dab992006-12-11 11:25:42 +01001564 for (i = mgp->rx_small.cnt; i < mgp->rx_small.fill_cnt; i++) {
1565 int idx = i & mgp->rx_small.mask;
1566 myri10ge_unmap_rx_page(mgp->pdev, &mgp->rx_small.info[idx],
1567 mgp->small_bytes + MXGEFW_PAD);
1568 put_page(mgp->rx_small.info[idx].page);
Brice Goglin0da34b62006-05-23 06:10:15 -04001569 }
Brice Goglinc7dab992006-12-11 11:25:42 +01001570
Brice Goglin0da34b62006-05-23 06:10:15 -04001571 kfree(mgp->rx_big.info);
1572
1573abort_with_rx_small_info:
1574 kfree(mgp->rx_small.info);
1575
1576abort_with_tx_info:
1577 kfree(mgp->tx.info);
1578
1579abort_with_rx_big_shadow:
1580 kfree(mgp->rx_big.shadow);
1581
1582abort_with_rx_small_shadow:
1583 kfree(mgp->rx_small.shadow);
1584
1585abort_with_tx_req_bytes:
1586 kfree(mgp->tx.req_bytes);
1587 mgp->tx.req_bytes = NULL;
1588 mgp->tx.req_list = NULL;
1589
1590abort_with_nothing:
1591 return status;
1592}
1593
1594static void myri10ge_free_rings(struct net_device *dev)
1595{
1596 struct myri10ge_priv *mgp;
1597 struct sk_buff *skb;
1598 struct myri10ge_tx_buf *tx;
1599 int i, len, idx;
1600
1601 mgp = netdev_priv(dev);
1602
Brice Goglinc7dab992006-12-11 11:25:42 +01001603 for (i = mgp->rx_big.cnt; i < mgp->rx_big.fill_cnt; i++) {
1604 idx = i & mgp->rx_big.mask;
1605 if (i == mgp->rx_big.fill_cnt - 1)
1606 mgp->rx_big.info[idx].page_offset = MYRI10GE_ALLOC_SIZE;
1607 myri10ge_unmap_rx_page(mgp->pdev, &mgp->rx_big.info[idx],
1608 mgp->big_bytes);
1609 put_page(mgp->rx_big.info[idx].page);
Brice Goglin0da34b62006-05-23 06:10:15 -04001610 }
1611
Brice Goglinc7dab992006-12-11 11:25:42 +01001612 for (i = mgp->rx_small.cnt; i < mgp->rx_small.fill_cnt; i++) {
1613 idx = i & mgp->rx_small.mask;
1614 if (i == mgp->rx_small.fill_cnt - 1)
1615 mgp->rx_small.info[idx].page_offset =
1616 MYRI10GE_ALLOC_SIZE;
1617 myri10ge_unmap_rx_page(mgp->pdev, &mgp->rx_small.info[idx],
1618 mgp->small_bytes + MXGEFW_PAD);
1619 put_page(mgp->rx_small.info[idx].page);
Brice Goglin0da34b62006-05-23 06:10:15 -04001620 }
Brice Goglin0da34b62006-05-23 06:10:15 -04001621 tx = &mgp->tx;
1622 while (tx->done != tx->req) {
1623 idx = tx->done & tx->mask;
1624 skb = tx->info[idx].skb;
1625
1626 /* Mark as free */
1627 tx->info[idx].skb = NULL;
1628 tx->done++;
1629 len = pci_unmap_len(&tx->info[idx], len);
1630 pci_unmap_len_set(&tx->info[idx], len, 0);
1631 if (skb) {
1632 mgp->stats.tx_dropped++;
1633 dev_kfree_skb_any(skb);
1634 if (len)
1635 pci_unmap_single(mgp->pdev,
1636 pci_unmap_addr(&tx->info[idx],
1637 bus), len,
1638 PCI_DMA_TODEVICE);
1639 } else {
1640 if (len)
1641 pci_unmap_page(mgp->pdev,
1642 pci_unmap_addr(&tx->info[idx],
1643 bus), len,
1644 PCI_DMA_TODEVICE);
1645 }
1646 }
1647 kfree(mgp->rx_big.info);
1648
1649 kfree(mgp->rx_small.info);
1650
1651 kfree(mgp->tx.info);
1652
1653 kfree(mgp->rx_big.shadow);
1654
1655 kfree(mgp->rx_small.shadow);
1656
1657 kfree(mgp->tx.req_bytes);
1658 mgp->tx.req_bytes = NULL;
1659 mgp->tx.req_list = NULL;
1660}
1661
Brice Goglindf30a742006-12-18 11:50:40 +01001662static int myri10ge_request_irq(struct myri10ge_priv *mgp)
1663{
1664 struct pci_dev *pdev = mgp->pdev;
1665 int status;
1666
1667 if (myri10ge_msi) {
1668 status = pci_enable_msi(pdev);
1669 if (status != 0)
1670 dev_err(&pdev->dev,
1671 "Error %d setting up MSI; falling back to xPIC\n",
1672 status);
1673 else
1674 mgp->msi_enabled = 1;
1675 } else {
1676 mgp->msi_enabled = 0;
1677 }
1678 status = request_irq(pdev->irq, myri10ge_intr, IRQF_SHARED,
1679 mgp->dev->name, mgp);
1680 if (status != 0) {
1681 dev_err(&pdev->dev, "failed to allocate IRQ\n");
1682 if (mgp->msi_enabled)
1683 pci_disable_msi(pdev);
1684 }
1685 return status;
1686}
1687
1688static void myri10ge_free_irq(struct myri10ge_priv *mgp)
1689{
1690 struct pci_dev *pdev = mgp->pdev;
1691
1692 free_irq(pdev->irq, mgp);
1693 if (mgp->msi_enabled)
1694 pci_disable_msi(pdev);
1695}
1696
Brice Goglin0da34b62006-05-23 06:10:15 -04001697static int myri10ge_open(struct net_device *dev)
1698{
1699 struct myri10ge_priv *mgp;
1700 struct myri10ge_cmd cmd;
1701 int status, big_pow2;
1702
1703 mgp = netdev_priv(dev);
1704
1705 if (mgp->running != MYRI10GE_ETH_STOPPED)
1706 return -EBUSY;
1707
1708 mgp->running = MYRI10GE_ETH_STARTING;
1709 status = myri10ge_reset(mgp);
1710 if (status != 0) {
1711 printk(KERN_ERR "myri10ge: %s: failed reset\n", dev->name);
Brice Goglindf30a742006-12-18 11:50:40 +01001712 goto abort_with_nothing;
Brice Goglin0da34b62006-05-23 06:10:15 -04001713 }
1714
Brice Goglindf30a742006-12-18 11:50:40 +01001715 status = myri10ge_request_irq(mgp);
1716 if (status != 0)
1717 goto abort_with_nothing;
1718
Brice Goglin0da34b62006-05-23 06:10:15 -04001719 /* decide what small buffer size to use. For good TCP rx
1720 * performance, it is important to not receive 1514 byte
1721 * frames into jumbo buffers, as it confuses the socket buffer
1722 * accounting code, leading to drops and erratic performance.
1723 */
1724
1725 if (dev->mtu <= ETH_DATA_LEN)
Brice Goglinc7dab992006-12-11 11:25:42 +01001726 /* enough for a TCP header */
1727 mgp->small_bytes = (128 > SMP_CACHE_BYTES)
1728 ? (128 - MXGEFW_PAD)
1729 : (SMP_CACHE_BYTES - MXGEFW_PAD);
Brice Goglin0da34b62006-05-23 06:10:15 -04001730 else
Brice Goglinde3c4502006-12-11 11:26:38 +01001731 /* enough for a vlan encapsulated ETH_DATA_LEN frame */
1732 mgp->small_bytes = VLAN_ETH_FRAME_LEN;
Brice Goglin0da34b62006-05-23 06:10:15 -04001733
1734 /* Override the small buffer size? */
1735 if (myri10ge_small_bytes > 0)
1736 mgp->small_bytes = myri10ge_small_bytes;
1737
Brice Goglin0da34b62006-05-23 06:10:15 -04001738 /* get the lanai pointers to the send and receive rings */
1739
1740 status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_OFFSET, &cmd, 0);
1741 mgp->tx.lanai =
1742 (struct mcp_kreq_ether_send __iomem *)(mgp->sram + cmd.data0);
1743
1744 status |=
1745 myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SMALL_RX_OFFSET, &cmd, 0);
1746 mgp->rx_small.lanai =
1747 (struct mcp_kreq_ether_recv __iomem *)(mgp->sram + cmd.data0);
1748
1749 status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_BIG_RX_OFFSET, &cmd, 0);
1750 mgp->rx_big.lanai =
1751 (struct mcp_kreq_ether_recv __iomem *)(mgp->sram + cmd.data0);
1752
1753 if (status != 0) {
1754 printk(KERN_ERR
1755 "myri10ge: %s: failed to get ring sizes or locations\n",
1756 dev->name);
1757 mgp->running = MYRI10GE_ETH_STOPPED;
Brice Goglindf30a742006-12-18 11:50:40 +01001758 goto abort_with_irq;
Brice Goglin0da34b62006-05-23 06:10:15 -04001759 }
1760
Brice Goglin276e26c2007-03-07 20:02:32 +01001761 if (myri10ge_wcfifo && mgp->wc_enabled) {
Brice Gogline700f9f2006-08-14 17:52:54 -04001762 mgp->tx.wc_fifo = (u8 __iomem *) mgp->sram + MXGEFW_ETH_SEND_4;
1763 mgp->rx_small.wc_fifo =
1764 (u8 __iomem *) mgp->sram + MXGEFW_ETH_RECV_SMALL;
1765 mgp->rx_big.wc_fifo =
1766 (u8 __iomem *) mgp->sram + MXGEFW_ETH_RECV_BIG;
Brice Goglin0da34b62006-05-23 06:10:15 -04001767 } else {
1768 mgp->tx.wc_fifo = NULL;
1769 mgp->rx_small.wc_fifo = NULL;
1770 mgp->rx_big.wc_fifo = NULL;
1771 }
1772
Brice Goglin0da34b62006-05-23 06:10:15 -04001773 /* Firmware needs the big buff size as a power of 2. Lie and
1774 * tell him the buffer is larger, because we only use 1
1775 * buffer/pkt, and the mtu will prevent overruns.
1776 */
Brice Goglin13348be2006-12-11 11:27:19 +01001777 big_pow2 = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD;
Brice Goglinc7dab992006-12-11 11:25:42 +01001778 if (big_pow2 < MYRI10GE_ALLOC_SIZE / 2) {
1779 while ((big_pow2 & (big_pow2 - 1)) != 0)
1780 big_pow2++;
Brice Goglin13348be2006-12-11 11:27:19 +01001781 mgp->big_bytes = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD;
Brice Goglinc7dab992006-12-11 11:25:42 +01001782 } else {
1783 big_pow2 = MYRI10GE_ALLOC_SIZE;
1784 mgp->big_bytes = big_pow2;
1785 }
1786
1787 status = myri10ge_allocate_rings(dev);
1788 if (status != 0)
Brice Goglindf30a742006-12-18 11:50:40 +01001789 goto abort_with_irq;
Brice Goglin0da34b62006-05-23 06:10:15 -04001790
1791 /* now give firmware buffers sizes, and MTU */
1792 cmd.data0 = dev->mtu + ETH_HLEN + VLAN_HLEN;
1793 status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_MTU, &cmd, 0);
1794 cmd.data0 = mgp->small_bytes;
1795 status |=
1796 myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_SMALL_BUFFER_SIZE, &cmd, 0);
1797 cmd.data0 = big_pow2;
1798 status |=
1799 myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_BIG_BUFFER_SIZE, &cmd, 0);
1800 if (status) {
1801 printk(KERN_ERR "myri10ge: %s: Couldn't set buffer sizes\n",
1802 dev->name);
1803 goto abort_with_rings;
1804 }
1805
1806 cmd.data0 = MYRI10GE_LOWPART_TO_U32(mgp->fw_stats_bus);
1807 cmd.data1 = MYRI10GE_HIGHPART_TO_U32(mgp->fw_stats_bus);
Brice Goglin85a7ea12006-08-21 17:36:56 -04001808 cmd.data2 = sizeof(struct mcp_irq_data);
1809 status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_STATS_DMA_V2, &cmd, 0);
1810 if (status == -ENOSYS) {
1811 dma_addr_t bus = mgp->fw_stats_bus;
1812 bus += offsetof(struct mcp_irq_data, send_done_count);
1813 cmd.data0 = MYRI10GE_LOWPART_TO_U32(bus);
1814 cmd.data1 = MYRI10GE_HIGHPART_TO_U32(bus);
1815 status = myri10ge_send_cmd(mgp,
1816 MXGEFW_CMD_SET_STATS_DMA_OBSOLETE,
1817 &cmd, 0);
1818 /* Firmware cannot support multicast without STATS_DMA_V2 */
1819 mgp->fw_multicast_support = 0;
1820 } else {
1821 mgp->fw_multicast_support = 1;
1822 }
Brice Goglin0da34b62006-05-23 06:10:15 -04001823 if (status) {
1824 printk(KERN_ERR "myri10ge: %s: Couldn't set stats DMA\n",
1825 dev->name);
1826 goto abort_with_rings;
1827 }
1828
Al Viro40f6cff2006-11-20 13:48:32 -05001829 mgp->link_state = htonl(~0U);
Brice Goglin0da34b62006-05-23 06:10:15 -04001830 mgp->rdma_tags_available = 15;
1831
1832 netif_poll_enable(mgp->dev); /* must happen prior to any irq */
1833
1834 status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_UP, &cmd, 0);
1835 if (status) {
1836 printk(KERN_ERR "myri10ge: %s: Couldn't bring up link\n",
1837 dev->name);
1838 goto abort_with_rings;
1839 }
1840
1841 mgp->wake_queue = 0;
1842 mgp->stop_queue = 0;
1843 mgp->running = MYRI10GE_ETH_RUNNING;
1844 mgp->watchdog_timer.expires = jiffies + myri10ge_watchdog_timeout * HZ;
1845 add_timer(&mgp->watchdog_timer);
1846 netif_wake_queue(dev);
1847 return 0;
1848
1849abort_with_rings:
1850 myri10ge_free_rings(dev);
1851
Brice Goglindf30a742006-12-18 11:50:40 +01001852abort_with_irq:
1853 myri10ge_free_irq(mgp);
1854
Brice Goglin0da34b62006-05-23 06:10:15 -04001855abort_with_nothing:
1856 mgp->running = MYRI10GE_ETH_STOPPED;
1857 return -ENOMEM;
1858}
1859
1860static int myri10ge_close(struct net_device *dev)
1861{
1862 struct myri10ge_priv *mgp;
1863 struct myri10ge_cmd cmd;
1864 int status, old_down_cnt;
1865
1866 mgp = netdev_priv(dev);
1867
1868 if (mgp->running != MYRI10GE_ETH_RUNNING)
1869 return 0;
1870
1871 if (mgp->tx.req_bytes == NULL)
1872 return 0;
1873
1874 del_timer_sync(&mgp->watchdog_timer);
1875 mgp->running = MYRI10GE_ETH_STOPPING;
1876 netif_poll_disable(mgp->dev);
1877 netif_carrier_off(dev);
1878 netif_stop_queue(dev);
1879 old_down_cnt = mgp->down_cnt;
1880 mb();
1881 status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_DOWN, &cmd, 0);
1882 if (status)
1883 printk(KERN_ERR "myri10ge: %s: Couldn't bring down link\n",
1884 dev->name);
1885
1886 wait_event_timeout(mgp->down_wq, old_down_cnt != mgp->down_cnt, HZ);
1887 if (old_down_cnt == mgp->down_cnt)
1888 printk(KERN_ERR "myri10ge: %s never got down irq\n", dev->name);
1889
1890 netif_tx_disable(dev);
Brice Goglindf30a742006-12-18 11:50:40 +01001891 myri10ge_free_irq(mgp);
Brice Goglin0da34b62006-05-23 06:10:15 -04001892 myri10ge_free_rings(dev);
1893
1894 mgp->running = MYRI10GE_ETH_STOPPED;
1895 return 0;
1896}
1897
1898/* copy an array of struct mcp_kreq_ether_send's to the mcp. Copy
1899 * backwards one at a time and handle ring wraps */
1900
1901static inline void
1902myri10ge_submit_req_backwards(struct myri10ge_tx_buf *tx,
1903 struct mcp_kreq_ether_send *src, int cnt)
1904{
1905 int idx, starting_slot;
1906 starting_slot = tx->req;
1907 while (cnt > 1) {
1908 cnt--;
1909 idx = (starting_slot + cnt) & tx->mask;
1910 myri10ge_pio_copy(&tx->lanai[idx], &src[cnt], sizeof(*src));
1911 mb();
1912 }
1913}
1914
1915/*
1916 * copy an array of struct mcp_kreq_ether_send's to the mcp. Copy
1917 * at most 32 bytes at a time, so as to avoid involving the software
1918 * pio handler in the nic. We re-write the first segment's flags
1919 * to mark them valid only after writing the entire chain.
1920 */
1921
1922static inline void
1923myri10ge_submit_req(struct myri10ge_tx_buf *tx, struct mcp_kreq_ether_send *src,
1924 int cnt)
1925{
1926 int idx, i;
1927 struct mcp_kreq_ether_send __iomem *dstp, *dst;
1928 struct mcp_kreq_ether_send *srcp;
1929 u8 last_flags;
1930
1931 idx = tx->req & tx->mask;
1932
1933 last_flags = src->flags;
1934 src->flags = 0;
1935 mb();
1936 dst = dstp = &tx->lanai[idx];
1937 srcp = src;
1938
1939 if ((idx + cnt) < tx->mask) {
1940 for (i = 0; i < (cnt - 1); i += 2) {
1941 myri10ge_pio_copy(dstp, srcp, 2 * sizeof(*src));
1942 mb(); /* force write every 32 bytes */
1943 srcp += 2;
1944 dstp += 2;
1945 }
1946 } else {
1947 /* submit all but the first request, and ensure
1948 * that it is submitted below */
1949 myri10ge_submit_req_backwards(tx, src, cnt);
1950 i = 0;
1951 }
1952 if (i < cnt) {
1953 /* submit the first request */
1954 myri10ge_pio_copy(dstp, srcp, sizeof(*src));
1955 mb(); /* barrier before setting valid flag */
1956 }
1957
1958 /* re-write the last 32-bits with the valid flags */
1959 src->flags = last_flags;
Al Viro40f6cff2006-11-20 13:48:32 -05001960 put_be32(*((__be32 *) src + 3), (__be32 __iomem *) dst + 3);
Brice Goglin0da34b62006-05-23 06:10:15 -04001961 tx->req += cnt;
1962 mb();
1963}
1964
1965static inline void
1966myri10ge_submit_req_wc(struct myri10ge_tx_buf *tx,
1967 struct mcp_kreq_ether_send *src, int cnt)
1968{
1969 tx->req += cnt;
1970 mb();
1971 while (cnt >= 4) {
1972 myri10ge_pio_copy(tx->wc_fifo, src, 64);
1973 mb();
1974 src += 4;
1975 cnt -= 4;
1976 }
1977 if (cnt > 0) {
1978 /* pad it to 64 bytes. The src is 64 bytes bigger than it
1979 * needs to be so that we don't overrun it */
Brice Gogline700f9f2006-08-14 17:52:54 -04001980 myri10ge_pio_copy(tx->wc_fifo + MXGEFW_ETH_SEND_OFFSET(cnt),
1981 src, 64);
Brice Goglin0da34b62006-05-23 06:10:15 -04001982 mb();
1983 }
1984}
1985
1986/*
1987 * Transmit a packet. We need to split the packet so that a single
1988 * segment does not cross myri10ge->tx.boundary, so this makes segment
1989 * counting tricky. So rather than try to count segments up front, we
1990 * just give up if there are too few segments to hold a reasonably
1991 * fragmented packet currently available. If we run
1992 * out of segments while preparing a packet for DMA, we just linearize
1993 * it and try again.
1994 */
1995
1996static int myri10ge_xmit(struct sk_buff *skb, struct net_device *dev)
1997{
1998 struct myri10ge_priv *mgp = netdev_priv(dev);
1999 struct mcp_kreq_ether_send *req;
2000 struct myri10ge_tx_buf *tx = &mgp->tx;
2001 struct skb_frag_struct *frag;
2002 dma_addr_t bus;
Al Viro40f6cff2006-11-20 13:48:32 -05002003 u32 low;
2004 __be32 high_swapped;
Brice Goglin0da34b62006-05-23 06:10:15 -04002005 unsigned int len;
2006 int idx, last_idx, avail, frag_cnt, frag_idx, count, mss, max_segments;
2007 u16 pseudo_hdr_offset, cksum_offset;
2008 int cum_len, seglen, boundary, rdma_count;
2009 u8 flags, odd_flag;
2010
2011again:
2012 req = tx->req_list;
2013 avail = tx->mask - 1 - (tx->req - tx->done);
2014
2015 mss = 0;
2016 max_segments = MXGEFW_MAX_SEND_DESC;
2017
Brice Goglin917690c2007-03-27 21:54:53 +02002018 if (skb_is_gso(skb)) {
Herbert Xu79671682006-06-22 02:40:14 -07002019 mss = skb_shinfo(skb)->gso_size;
Brice Goglin917690c2007-03-27 21:54:53 +02002020 max_segments = MYRI10GE_MAX_SEND_DESC_TSO;
Brice Goglin0da34b62006-05-23 06:10:15 -04002021 }
Brice Goglin0da34b62006-05-23 06:10:15 -04002022
2023 if ((unlikely(avail < max_segments))) {
2024 /* we are out of transmit resources */
2025 mgp->stop_queue++;
2026 netif_stop_queue(dev);
2027 return 1;
2028 }
2029
2030 /* Setup checksum offloading, if needed */
2031 cksum_offset = 0;
2032 pseudo_hdr_offset = 0;
2033 odd_flag = 0;
2034 flags = (MXGEFW_FLAGS_NO_TSO | MXGEFW_FLAGS_FIRST);
Patrick McHardy84fa7932006-08-29 16:44:56 -07002035 if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
Brice Goglin0da34b62006-05-23 06:10:15 -04002036 cksum_offset = (skb->h.raw - skb->data);
Al Viroff1dcad2006-11-20 18:07:29 -08002037 pseudo_hdr_offset = cksum_offset + skb->csum_offset;
Brice Goglin0da34b62006-05-23 06:10:15 -04002038 /* If the headers are excessively large, then we must
2039 * fall back to a software checksum */
2040 if (unlikely(cksum_offset > 255 || pseudo_hdr_offset > 127)) {
Patrick McHardy84fa7932006-08-29 16:44:56 -07002041 if (skb_checksum_help(skb))
Brice Goglin0da34b62006-05-23 06:10:15 -04002042 goto drop;
2043 cksum_offset = 0;
2044 pseudo_hdr_offset = 0;
2045 } else {
Brice Goglin0da34b62006-05-23 06:10:15 -04002046 odd_flag = MXGEFW_FLAGS_ALIGN_ODD;
2047 flags |= MXGEFW_FLAGS_CKSUM;
2048 }
2049 }
2050
2051 cum_len = 0;
2052
Brice Goglin0da34b62006-05-23 06:10:15 -04002053 if (mss) { /* TSO */
2054 /* this removes any CKSUM flag from before */
2055 flags = (MXGEFW_FLAGS_TSO_HDR | MXGEFW_FLAGS_FIRST);
2056
2057 /* negative cum_len signifies to the
2058 * send loop that we are still in the
2059 * header portion of the TSO packet.
2060 * TSO header must be at most 134 bytes long */
2061 cum_len = -((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
2062
2063 /* for TSO, pseudo_hdr_offset holds mss.
2064 * The firmware figures out where to put
2065 * the checksum by parsing the header. */
Al Viro40f6cff2006-11-20 13:48:32 -05002066 pseudo_hdr_offset = mss;
Brice Goglin0da34b62006-05-23 06:10:15 -04002067 } else
Brice Goglin0da34b62006-05-23 06:10:15 -04002068 /* Mark small packets, and pad out tiny packets */
2069 if (skb->len <= MXGEFW_SEND_SMALL_SIZE) {
2070 flags |= MXGEFW_FLAGS_SMALL;
2071
2072 /* pad frames to at least ETH_ZLEN bytes */
2073 if (unlikely(skb->len < ETH_ZLEN)) {
Herbert Xu5b057c62006-06-23 02:06:41 -07002074 if (skb_padto(skb, ETH_ZLEN)) {
Brice Goglin0da34b62006-05-23 06:10:15 -04002075 /* The packet is gone, so we must
2076 * return 0 */
2077 mgp->stats.tx_dropped += 1;
2078 return 0;
2079 }
2080 /* adjust the len to account for the zero pad
2081 * so that the nic can know how long it is */
2082 skb->len = ETH_ZLEN;
2083 }
2084 }
2085
2086 /* map the skb for DMA */
2087 len = skb->len - skb->data_len;
2088 idx = tx->req & tx->mask;
2089 tx->info[idx].skb = skb;
2090 bus = pci_map_single(mgp->pdev, skb->data, len, PCI_DMA_TODEVICE);
2091 pci_unmap_addr_set(&tx->info[idx], bus, bus);
2092 pci_unmap_len_set(&tx->info[idx], len, len);
2093
2094 frag_cnt = skb_shinfo(skb)->nr_frags;
2095 frag_idx = 0;
2096 count = 0;
2097 rdma_count = 0;
2098
2099 /* "rdma_count" is the number of RDMAs belonging to the
2100 * current packet BEFORE the current send request. For
2101 * non-TSO packets, this is equal to "count".
2102 * For TSO packets, rdma_count needs to be reset
2103 * to 0 after a segment cut.
2104 *
2105 * The rdma_count field of the send request is
2106 * the number of RDMAs of the packet starting at
2107 * that request. For TSO send requests with one ore more cuts
2108 * in the middle, this is the number of RDMAs starting
2109 * after the last cut in the request. All previous
2110 * segments before the last cut implicitly have 1 RDMA.
2111 *
2112 * Since the number of RDMAs is not known beforehand,
2113 * it must be filled-in retroactively - after each
2114 * segmentation cut or at the end of the entire packet.
2115 */
2116
2117 while (1) {
2118 /* Break the SKB or Fragment up into pieces which
2119 * do not cross mgp->tx.boundary */
2120 low = MYRI10GE_LOWPART_TO_U32(bus);
2121 high_swapped = htonl(MYRI10GE_HIGHPART_TO_U32(bus));
2122 while (len) {
2123 u8 flags_next;
2124 int cum_len_next;
2125
2126 if (unlikely(count == max_segments))
2127 goto abort_linearize;
2128
2129 boundary = (low + tx->boundary) & ~(tx->boundary - 1);
2130 seglen = boundary - low;
2131 if (seglen > len)
2132 seglen = len;
2133 flags_next = flags & ~MXGEFW_FLAGS_FIRST;
2134 cum_len_next = cum_len + seglen;
Brice Goglin0da34b62006-05-23 06:10:15 -04002135 if (mss) { /* TSO */
2136 (req - rdma_count)->rdma_count = rdma_count + 1;
2137
2138 if (likely(cum_len >= 0)) { /* payload */
2139 int next_is_first, chop;
2140
2141 chop = (cum_len_next > mss);
2142 cum_len_next = cum_len_next % mss;
2143 next_is_first = (cum_len_next == 0);
2144 flags |= chop * MXGEFW_FLAGS_TSO_CHOP;
2145 flags_next |= next_is_first *
2146 MXGEFW_FLAGS_FIRST;
2147 rdma_count |= -(chop | next_is_first);
2148 rdma_count += chop & !next_is_first;
2149 } else if (likely(cum_len_next >= 0)) { /* header ends */
2150 int small;
2151
2152 rdma_count = -1;
2153 cum_len_next = 0;
2154 seglen = -cum_len;
2155 small = (mss <= MXGEFW_SEND_SMALL_SIZE);
2156 flags_next = MXGEFW_FLAGS_TSO_PLD |
2157 MXGEFW_FLAGS_FIRST |
2158 (small * MXGEFW_FLAGS_SMALL);
2159 }
2160 }
Brice Goglin0da34b62006-05-23 06:10:15 -04002161 req->addr_high = high_swapped;
2162 req->addr_low = htonl(low);
Al Viro40f6cff2006-11-20 13:48:32 -05002163 req->pseudo_hdr_offset = htons(pseudo_hdr_offset);
Brice Goglin0da34b62006-05-23 06:10:15 -04002164 req->pad = 0; /* complete solid 16-byte block; does this matter? */
2165 req->rdma_count = 1;
2166 req->length = htons(seglen);
2167 req->cksum_offset = cksum_offset;
2168 req->flags = flags | ((cum_len & 1) * odd_flag);
2169
2170 low += seglen;
2171 len -= seglen;
2172 cum_len = cum_len_next;
2173 flags = flags_next;
2174 req++;
2175 count++;
2176 rdma_count++;
2177 if (unlikely(cksum_offset > seglen))
2178 cksum_offset -= seglen;
2179 else
2180 cksum_offset = 0;
2181 }
2182 if (frag_idx == frag_cnt)
2183 break;
2184
2185 /* map next fragment for DMA */
2186 idx = (count + tx->req) & tx->mask;
2187 frag = &skb_shinfo(skb)->frags[frag_idx];
2188 frag_idx++;
2189 len = frag->size;
2190 bus = pci_map_page(mgp->pdev, frag->page, frag->page_offset,
2191 len, PCI_DMA_TODEVICE);
2192 pci_unmap_addr_set(&tx->info[idx], bus, bus);
2193 pci_unmap_len_set(&tx->info[idx], len, len);
2194 }
2195
2196 (req - rdma_count)->rdma_count = rdma_count;
Brice Goglin0da34b62006-05-23 06:10:15 -04002197 if (mss)
2198 do {
2199 req--;
2200 req->flags |= MXGEFW_FLAGS_TSO_LAST;
2201 } while (!(req->flags & (MXGEFW_FLAGS_TSO_CHOP |
2202 MXGEFW_FLAGS_FIRST)));
Brice Goglin0da34b62006-05-23 06:10:15 -04002203 idx = ((count - 1) + tx->req) & tx->mask;
2204 tx->info[idx].last = 1;
2205 if (tx->wc_fifo == NULL)
2206 myri10ge_submit_req(tx, tx->req_list, count);
2207 else
2208 myri10ge_submit_req_wc(tx, tx->req_list, count);
2209 tx->pkt_start++;
2210 if ((avail - count) < MXGEFW_MAX_SEND_DESC) {
2211 mgp->stop_queue++;
2212 netif_stop_queue(dev);
2213 }
2214 dev->trans_start = jiffies;
2215 return 0;
2216
2217abort_linearize:
2218 /* Free any DMA resources we've alloced and clear out the skb
2219 * slot so as to not trip up assertions, and to avoid a
2220 * double-free if linearizing fails */
2221
2222 last_idx = (idx + 1) & tx->mask;
2223 idx = tx->req & tx->mask;
2224 tx->info[idx].skb = NULL;
2225 do {
2226 len = pci_unmap_len(&tx->info[idx], len);
2227 if (len) {
2228 if (tx->info[idx].skb != NULL)
2229 pci_unmap_single(mgp->pdev,
2230 pci_unmap_addr(&tx->info[idx],
2231 bus), len,
2232 PCI_DMA_TODEVICE);
2233 else
2234 pci_unmap_page(mgp->pdev,
2235 pci_unmap_addr(&tx->info[idx],
2236 bus), len,
2237 PCI_DMA_TODEVICE);
2238 pci_unmap_len_set(&tx->info[idx], len, 0);
2239 tx->info[idx].skb = NULL;
2240 }
2241 idx = (idx + 1) & tx->mask;
2242 } while (idx != last_idx);
Herbert Xu89114af2006-07-08 13:34:32 -07002243 if (skb_is_gso(skb)) {
Brice Goglin0da34b62006-05-23 06:10:15 -04002244 printk(KERN_ERR
2245 "myri10ge: %s: TSO but wanted to linearize?!?!?\n",
2246 mgp->dev->name);
2247 goto drop;
2248 }
2249
Andrew Mortonbec0e852006-06-22 14:47:19 -07002250 if (skb_linearize(skb))
Brice Goglin0da34b62006-05-23 06:10:15 -04002251 goto drop;
2252
2253 mgp->tx_linearized++;
2254 goto again;
2255
2256drop:
2257 dev_kfree_skb_any(skb);
2258 mgp->stats.tx_dropped += 1;
2259 return 0;
2260
2261}
2262
2263static struct net_device_stats *myri10ge_get_stats(struct net_device *dev)
2264{
2265 struct myri10ge_priv *mgp = netdev_priv(dev);
2266 return &mgp->stats;
2267}
2268
2269static void myri10ge_set_multicast_list(struct net_device *dev)
2270{
Brice Goglin85a7ea12006-08-21 17:36:56 -04002271 struct myri10ge_cmd cmd;
2272 struct myri10ge_priv *mgp;
2273 struct dev_mc_list *mc_list;
Brice Goglin62502232006-12-11 11:24:37 +01002274 __be32 data[2] = { 0, 0 };
Brice Goglin85a7ea12006-08-21 17:36:56 -04002275 int err;
2276
2277 mgp = netdev_priv(dev);
Brice Goglin0da34b62006-05-23 06:10:15 -04002278 /* can be called from atomic contexts,
2279 * pass 1 to force atomicity in myri10ge_send_cmd() */
Brice Goglin85a7ea12006-08-21 17:36:56 -04002280 myri10ge_change_promisc(mgp, dev->flags & IFF_PROMISC, 1);
2281
2282 /* This firmware is known to not support multicast */
Brice Goglin9dc6f0e2007-02-21 18:05:17 +01002283 if (!mgp->fw_multicast_support || mgp->adopted_rx_filter_bug)
Brice Goglin85a7ea12006-08-21 17:36:56 -04002284 return;
2285
2286 /* Disable multicast filtering */
2287
2288 err = myri10ge_send_cmd(mgp, MXGEFW_ENABLE_ALLMULTI, &cmd, 1);
2289 if (err != 0) {
2290 printk(KERN_ERR "myri10ge: %s: Failed MXGEFW_ENABLE_ALLMULTI,"
2291 " error status: %d\n", dev->name, err);
2292 goto abort;
2293 }
2294
2295 if (dev->flags & IFF_ALLMULTI) {
2296 /* request to disable multicast filtering, so quit here */
2297 return;
2298 }
2299
2300 /* Flush the filters */
2301
2302 err = myri10ge_send_cmd(mgp, MXGEFW_LEAVE_ALL_MULTICAST_GROUPS,
2303 &cmd, 1);
2304 if (err != 0) {
2305 printk(KERN_ERR
2306 "myri10ge: %s: Failed MXGEFW_LEAVE_ALL_MULTICAST_GROUPS"
2307 ", error status: %d\n", dev->name, err);
2308 goto abort;
2309 }
2310
2311 /* Walk the multicast list, and add each address */
2312 for (mc_list = dev->mc_list; mc_list != NULL; mc_list = mc_list->next) {
Al Viro40f6cff2006-11-20 13:48:32 -05002313 memcpy(data, &mc_list->dmi_addr, 6);
2314 cmd.data0 = ntohl(data[0]);
2315 cmd.data1 = ntohl(data[1]);
Brice Goglin85a7ea12006-08-21 17:36:56 -04002316 err = myri10ge_send_cmd(mgp, MXGEFW_JOIN_MULTICAST_GROUP,
2317 &cmd, 1);
2318
2319 if (err != 0) {
2320 printk(KERN_ERR "myri10ge: %s: Failed "
2321 "MXGEFW_JOIN_MULTICAST_GROUP, error status:"
2322 "%d\t", dev->name, err);
2323 printk(KERN_ERR "MAC %02x:%02x:%02x:%02x:%02x:%02x\n",
2324 ((unsigned char *)&mc_list->dmi_addr)[0],
2325 ((unsigned char *)&mc_list->dmi_addr)[1],
2326 ((unsigned char *)&mc_list->dmi_addr)[2],
2327 ((unsigned char *)&mc_list->dmi_addr)[3],
2328 ((unsigned char *)&mc_list->dmi_addr)[4],
2329 ((unsigned char *)&mc_list->dmi_addr)[5]
2330 );
2331 goto abort;
2332 }
2333 }
2334 /* Enable multicast filtering */
2335 err = myri10ge_send_cmd(mgp, MXGEFW_DISABLE_ALLMULTI, &cmd, 1);
2336 if (err != 0) {
2337 printk(KERN_ERR "myri10ge: %s: Failed MXGEFW_DISABLE_ALLMULTI,"
2338 "error status: %d\n", dev->name, err);
2339 goto abort;
2340 }
2341
2342 return;
2343
2344abort:
2345 return;
Brice Goglin0da34b62006-05-23 06:10:15 -04002346}
2347
2348static int myri10ge_set_mac_address(struct net_device *dev, void *addr)
2349{
2350 struct sockaddr *sa = addr;
2351 struct myri10ge_priv *mgp = netdev_priv(dev);
2352 int status;
2353
2354 if (!is_valid_ether_addr(sa->sa_data))
2355 return -EADDRNOTAVAIL;
2356
2357 status = myri10ge_update_mac_address(mgp, sa->sa_data);
2358 if (status != 0) {
2359 printk(KERN_ERR
2360 "myri10ge: %s: changing mac address failed with %d\n",
2361 dev->name, status);
2362 return status;
2363 }
2364
2365 /* change the dev structure */
2366 memcpy(dev->dev_addr, sa->sa_data, 6);
2367 return 0;
2368}
2369
2370static int myri10ge_change_mtu(struct net_device *dev, int new_mtu)
2371{
2372 struct myri10ge_priv *mgp = netdev_priv(dev);
2373 int error = 0;
2374
2375 if ((new_mtu < 68) || (ETH_HLEN + new_mtu > MYRI10GE_MAX_ETHER_MTU)) {
2376 printk(KERN_ERR "myri10ge: %s: new mtu (%d) is not valid\n",
2377 dev->name, new_mtu);
2378 return -EINVAL;
2379 }
2380 printk(KERN_INFO "%s: changing mtu from %d to %d\n",
2381 dev->name, dev->mtu, new_mtu);
2382 if (mgp->running) {
2383 /* if we change the mtu on an active device, we must
2384 * reset the device so the firmware sees the change */
2385 myri10ge_close(dev);
2386 dev->mtu = new_mtu;
2387 myri10ge_open(dev);
2388 } else
2389 dev->mtu = new_mtu;
2390
2391 return error;
2392}
2393
2394/*
2395 * Enable ECRC to align PCI-E Completion packets on an 8-byte boundary.
2396 * Only do it if the bridge is a root port since we don't want to disturb
2397 * any other device, except if forced with myri10ge_ecrc_enable > 1.
2398 */
2399
Brice Goglin0da34b62006-05-23 06:10:15 -04002400static void myri10ge_enable_ecrc(struct myri10ge_priv *mgp)
2401{
2402 struct pci_dev *bridge = mgp->pdev->bus->self;
2403 struct device *dev = &mgp->pdev->dev;
2404 unsigned cap;
2405 unsigned err_cap;
2406 u16 val;
2407 u8 ext_type;
2408 int ret;
2409
2410 if (!myri10ge_ecrc_enable || !bridge)
2411 return;
2412
2413 /* check that the bridge is a root port */
2414 cap = pci_find_capability(bridge, PCI_CAP_ID_EXP);
2415 pci_read_config_word(bridge, cap + PCI_CAP_FLAGS, &val);
2416 ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4;
2417 if (ext_type != PCI_EXP_TYPE_ROOT_PORT) {
2418 if (myri10ge_ecrc_enable > 1) {
2419 struct pci_dev *old_bridge = bridge;
2420
2421 /* Walk the hierarchy up to the root port
2422 * where ECRC has to be enabled */
2423 do {
2424 bridge = bridge->bus->self;
2425 if (!bridge) {
2426 dev_err(dev,
2427 "Failed to find root port"
2428 " to force ECRC\n");
2429 return;
2430 }
2431 cap =
2432 pci_find_capability(bridge, PCI_CAP_ID_EXP);
2433 pci_read_config_word(bridge,
2434 cap + PCI_CAP_FLAGS, &val);
2435 ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4;
2436 } while (ext_type != PCI_EXP_TYPE_ROOT_PORT);
2437
2438 dev_info(dev,
2439 "Forcing ECRC on non-root port %s"
2440 " (enabling on root port %s)\n",
2441 pci_name(old_bridge), pci_name(bridge));
2442 } else {
2443 dev_err(dev,
2444 "Not enabling ECRC on non-root port %s\n",
2445 pci_name(bridge));
2446 return;
2447 }
2448 }
2449
2450 cap = pci_find_ext_capability(bridge, PCI_EXT_CAP_ID_ERR);
Brice Goglin0da34b62006-05-23 06:10:15 -04002451 if (!cap)
2452 return;
2453
2454 ret = pci_read_config_dword(bridge, cap + PCI_ERR_CAP, &err_cap);
2455 if (ret) {
2456 dev_err(dev, "failed reading ext-conf-space of %s\n",
2457 pci_name(bridge));
2458 dev_err(dev, "\t pci=nommconf in use? "
2459 "or buggy/incomplete/absent ACPI MCFG attr?\n");
2460 return;
2461 }
2462 if (!(err_cap & PCI_ERR_CAP_ECRC_GENC))
2463 return;
2464
2465 err_cap |= PCI_ERR_CAP_ECRC_GENE;
2466 pci_write_config_dword(bridge, cap + PCI_ERR_CAP, err_cap);
2467 dev_info(dev, "Enabled ECRC on upstream bridge %s\n", pci_name(bridge));
2468 mgp->tx.boundary = 4096;
2469 mgp->fw_name = myri10ge_fw_aligned;
2470}
2471
2472/*
2473 * The Lanai Z8E PCI-E interface achieves higher Read-DMA throughput
2474 * when the PCI-E Completion packets are aligned on an 8-byte
2475 * boundary. Some PCI-E chip sets always align Completion packets; on
2476 * the ones that do not, the alignment can be enforced by enabling
2477 * ECRC generation (if supported).
2478 *
2479 * When PCI-E Completion packets are not aligned, it is actually more
2480 * efficient to limit Read-DMA transactions to 2KB, rather than 4KB.
2481 *
2482 * If the driver can neither enable ECRC nor verify that it has
2483 * already been enabled, then it must use a firmware image which works
2484 * around unaligned completion packets (myri10ge_ethp_z8e.dat), and it
2485 * should also ensure that it never gives the device a Read-DMA which is
2486 * larger than 2KB by setting the tx.boundary to 2KB. If ECRC is
2487 * enabled, then the driver should use the aligned (myri10ge_eth_z8e.dat)
2488 * firmware image, and set tx.boundary to 4KB.
2489 */
2490
Brice Goglince7f9362006-08-31 01:32:59 -04002491#define PCI_DEVICE_ID_INTEL_E5000_PCIE23 0x25f7
2492#define PCI_DEVICE_ID_INTEL_E5000_PCIE47 0x25fa
Brice Goglinaafa70e2007-03-21 19:45:18 +01002493#define PCI_DEVICE_ID_SERVERWORKS_HT2100_PCIE_FIRST 0x140
2494#define PCI_DEVICE_ID_SERVERWORKS_HT2100_PCIE_LAST 0x142
Brice Goglin0da34b62006-05-23 06:10:15 -04002495
2496static void myri10ge_select_firmware(struct myri10ge_priv *mgp)
2497{
2498 struct pci_dev *bridge = mgp->pdev->bus->self;
2499
2500 mgp->tx.boundary = 2048;
2501 mgp->fw_name = myri10ge_fw_unaligned;
2502
2503 if (myri10ge_force_firmware == 0) {
Brice Goglince7f9362006-08-31 01:32:59 -04002504 int link_width, exp_cap;
2505 u16 lnk;
2506
2507 exp_cap = pci_find_capability(mgp->pdev, PCI_CAP_ID_EXP);
2508 pci_read_config_word(mgp->pdev, exp_cap + PCI_EXP_LNKSTA, &lnk);
2509 link_width = (lnk >> 4) & 0x3f;
2510
Brice Goglin0da34b62006-05-23 06:10:15 -04002511 myri10ge_enable_ecrc(mgp);
2512
Brice Goglince7f9362006-08-31 01:32:59 -04002513 /* Check to see if Link is less than 8 or if the
2514 * upstream bridge is known to provide aligned
2515 * completions */
2516 if (link_width < 8) {
2517 dev_info(&mgp->pdev->dev, "PCIE x%d Link\n",
2518 link_width);
2519 mgp->tx.boundary = 4096;
2520 mgp->fw_name = myri10ge_fw_aligned;
2521 } else if (bridge &&
2522 /* ServerWorks HT2000/HT1000 */
2523 ((bridge->vendor == PCI_VENDOR_ID_SERVERWORKS
2524 && bridge->device ==
2525 PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE)
Brice Goglinaafa70e2007-03-21 19:45:18 +01002526 /* ServerWorks HT2100 */
2527 || (bridge->vendor == PCI_VENDOR_ID_SERVERWORKS
2528 && bridge->device >=
2529 PCI_DEVICE_ID_SERVERWORKS_HT2100_PCIE_FIRST
2530 && bridge->device <=
2531 PCI_DEVICE_ID_SERVERWORKS_HT2100_PCIE_LAST)
Brice Goglince7f9362006-08-31 01:32:59 -04002532 /* All Intel E5000 PCIE ports */
2533 || (bridge->vendor == PCI_VENDOR_ID_INTEL
2534 && bridge->device >=
2535 PCI_DEVICE_ID_INTEL_E5000_PCIE23
2536 && bridge->device <=
2537 PCI_DEVICE_ID_INTEL_E5000_PCIE47))) {
Brice Goglin0da34b62006-05-23 06:10:15 -04002538 dev_info(&mgp->pdev->dev,
2539 "Assuming aligned completions (0x%x:0x%x)\n",
2540 bridge->vendor, bridge->device);
2541 mgp->tx.boundary = 4096;
2542 mgp->fw_name = myri10ge_fw_aligned;
Brice Goglin4c882dd2007-03-07 20:01:53 +01002543 } else if (bridge &&
2544 bridge->vendor == PCI_VENDOR_ID_SGI &&
2545 bridge->device == 0x4002 /* TIOCE pcie-port */ ) {
2546 /* this pcie bridge does not support 4K rdma request */
2547 mgp->tx.boundary = 2048;
2548 mgp->fw_name = myri10ge_fw_aligned;
Brice Goglin0da34b62006-05-23 06:10:15 -04002549 }
2550 } else {
2551 if (myri10ge_force_firmware == 1) {
2552 dev_info(&mgp->pdev->dev,
2553 "Assuming aligned completions (forced)\n");
2554 mgp->tx.boundary = 4096;
2555 mgp->fw_name = myri10ge_fw_aligned;
2556 } else {
2557 dev_info(&mgp->pdev->dev,
2558 "Assuming unaligned completions (forced)\n");
2559 mgp->tx.boundary = 2048;
2560 mgp->fw_name = myri10ge_fw_unaligned;
2561 }
2562 }
2563 if (myri10ge_fw_name != NULL) {
2564 dev_info(&mgp->pdev->dev, "overriding firmware to %s\n",
2565 myri10ge_fw_name);
2566 mgp->fw_name = myri10ge_fw_name;
2567 }
2568}
2569
Brice Goglin0da34b62006-05-23 06:10:15 -04002570#ifdef CONFIG_PM
2571
2572static int myri10ge_suspend(struct pci_dev *pdev, pm_message_t state)
2573{
2574 struct myri10ge_priv *mgp;
2575 struct net_device *netdev;
2576
2577 mgp = pci_get_drvdata(pdev);
2578 if (mgp == NULL)
2579 return -EINVAL;
2580 netdev = mgp->dev;
2581
2582 netif_device_detach(netdev);
2583 if (netif_running(netdev)) {
2584 printk(KERN_INFO "myri10ge: closing %s\n", netdev->name);
2585 rtnl_lock();
2586 myri10ge_close(netdev);
2587 rtnl_unlock();
2588 }
2589 myri10ge_dummy_rdma(mgp, 0);
Brice Goglin83f6e152006-12-18 11:52:02 +01002590 pci_save_state(pdev);
Brice Goglin0da34b62006-05-23 06:10:15 -04002591 pci_disable_device(pdev);
Brice Goglin1a63e842006-12-18 11:52:34 +01002592
2593 return pci_set_power_state(pdev, pci_choose_state(pdev, state));
Brice Goglin0da34b62006-05-23 06:10:15 -04002594}
2595
2596static int myri10ge_resume(struct pci_dev *pdev)
2597{
2598 struct myri10ge_priv *mgp;
2599 struct net_device *netdev;
2600 int status;
2601 u16 vendor;
2602
2603 mgp = pci_get_drvdata(pdev);
2604 if (mgp == NULL)
2605 return -EINVAL;
2606 netdev = mgp->dev;
2607 pci_set_power_state(pdev, 0); /* zeros conf space as a side effect */
2608 msleep(5); /* give card time to respond */
2609 pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor);
2610 if (vendor == 0xffff) {
2611 printk(KERN_ERR "myri10ge: %s: device disappeared!\n",
2612 mgp->dev->name);
2613 return -EIO;
2614 }
Brice Goglin83f6e152006-12-18 11:52:02 +01002615
Brice Goglin1a63e842006-12-18 11:52:34 +01002616 status = pci_restore_state(pdev);
2617 if (status)
2618 return status;
Brice Goglin4c2248c2006-07-09 21:10:18 -04002619
2620 status = pci_enable_device(pdev);
Brice Goglin1a63e842006-12-18 11:52:34 +01002621 if (status) {
Brice Goglin4c2248c2006-07-09 21:10:18 -04002622 dev_err(&pdev->dev, "failed to enable device\n");
Brice Goglin1a63e842006-12-18 11:52:34 +01002623 return status;
Brice Goglin4c2248c2006-07-09 21:10:18 -04002624 }
2625
Brice Goglin0da34b62006-05-23 06:10:15 -04002626 pci_set_master(pdev);
2627
Brice Goglin0da34b62006-05-23 06:10:15 -04002628 myri10ge_reset(mgp);
Brice Goglin013b68b2006-08-09 00:07:53 -04002629 myri10ge_dummy_rdma(mgp, 1);
Brice Goglin0da34b62006-05-23 06:10:15 -04002630
2631 /* Save configuration space to be restored if the
2632 * nic resets due to a parity error */
Brice Goglin83f6e152006-12-18 11:52:02 +01002633 pci_save_state(pdev);
Brice Goglin0da34b62006-05-23 06:10:15 -04002634
2635 if (netif_running(netdev)) {
2636 rtnl_lock();
Brice Goglindf30a742006-12-18 11:50:40 +01002637 status = myri10ge_open(netdev);
Brice Goglin0da34b62006-05-23 06:10:15 -04002638 rtnl_unlock();
Brice Goglindf30a742006-12-18 11:50:40 +01002639 if (status != 0)
2640 goto abort_with_enabled;
2641
Brice Goglin0da34b62006-05-23 06:10:15 -04002642 }
2643 netif_device_attach(netdev);
2644
2645 return 0;
2646
Brice Goglin4c2248c2006-07-09 21:10:18 -04002647abort_with_enabled:
2648 pci_disable_device(pdev);
Brice Goglin0da34b62006-05-23 06:10:15 -04002649 return -EIO;
2650
2651}
2652
2653#endif /* CONFIG_PM */
2654
2655static u32 myri10ge_read_reboot(struct myri10ge_priv *mgp)
2656{
2657 struct pci_dev *pdev = mgp->pdev;
2658 int vs = mgp->vendor_specific_offset;
2659 u32 reboot;
2660
2661 /*enter read32 mode */
2662 pci_write_config_byte(pdev, vs + 0x10, 0x3);
2663
2664 /*read REBOOT_STATUS (0xfffffff0) */
2665 pci_write_config_dword(pdev, vs + 0x18, 0xfffffff0);
2666 pci_read_config_dword(pdev, vs + 0x14, &reboot);
2667 return reboot;
2668}
2669
2670/*
2671 * This watchdog is used to check whether the board has suffered
2672 * from a parity error and needs to be recovered.
2673 */
David Howellsc4028952006-11-22 14:57:56 +00002674static void myri10ge_watchdog(struct work_struct *work)
Brice Goglin0da34b62006-05-23 06:10:15 -04002675{
David Howellsc4028952006-11-22 14:57:56 +00002676 struct myri10ge_priv *mgp =
Brice Goglin62502232006-12-11 11:24:37 +01002677 container_of(work, struct myri10ge_priv, watchdog_work);
Brice Goglin0da34b62006-05-23 06:10:15 -04002678 u32 reboot;
2679 int status;
2680 u16 cmd, vendor;
2681
2682 mgp->watchdog_resets++;
2683 pci_read_config_word(mgp->pdev, PCI_COMMAND, &cmd);
2684 if ((cmd & PCI_COMMAND_MASTER) == 0) {
2685 /* Bus master DMA disabled? Check to see
2686 * if the card rebooted due to a parity error
2687 * For now, just report it */
2688 reboot = myri10ge_read_reboot(mgp);
2689 printk(KERN_ERR
2690 "myri10ge: %s: NIC rebooted (0x%x), resetting\n",
2691 mgp->dev->name, reboot);
2692 /*
2693 * A rebooted nic will come back with config space as
2694 * it was after power was applied to PCIe bus.
2695 * Attempt to restore config space which was saved
2696 * when the driver was loaded, or the last time the
2697 * nic was resumed from power saving mode.
2698 */
Brice Goglin83f6e152006-12-18 11:52:02 +01002699 pci_restore_state(mgp->pdev);
Brice Goglin7adda302006-12-18 11:50:00 +01002700
2701 /* save state again for accounting reasons */
Brice Goglin83f6e152006-12-18 11:52:02 +01002702 pci_save_state(mgp->pdev);
Brice Goglin7adda302006-12-18 11:50:00 +01002703
Brice Goglin0da34b62006-05-23 06:10:15 -04002704 } else {
2705 /* if we get back -1's from our slot, perhaps somebody
2706 * powered off our card. Don't try to reset it in
2707 * this case */
2708 if (cmd == 0xffff) {
2709 pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor);
2710 if (vendor == 0xffff) {
2711 printk(KERN_ERR
2712 "myri10ge: %s: device disappeared!\n",
2713 mgp->dev->name);
2714 return;
2715 }
2716 }
2717 /* Perhaps it is a software error. Try to reset */
2718
2719 printk(KERN_ERR "myri10ge: %s: device timeout, resetting\n",
2720 mgp->dev->name);
2721 printk(KERN_INFO "myri10ge: %s: %d %d %d %d %d\n",
2722 mgp->dev->name, mgp->tx.req, mgp->tx.done,
2723 mgp->tx.pkt_start, mgp->tx.pkt_done,
2724 (int)ntohl(mgp->fw_stats->send_done_count));
2725 msleep(2000);
2726 printk(KERN_INFO "myri10ge: %s: %d %d %d %d %d\n",
2727 mgp->dev->name, mgp->tx.req, mgp->tx.done,
2728 mgp->tx.pkt_start, mgp->tx.pkt_done,
2729 (int)ntohl(mgp->fw_stats->send_done_count));
2730 }
2731 rtnl_lock();
2732 myri10ge_close(mgp->dev);
2733 status = myri10ge_load_firmware(mgp);
2734 if (status != 0)
2735 printk(KERN_ERR "myri10ge: %s: failed to load firmware\n",
2736 mgp->dev->name);
2737 else
2738 myri10ge_open(mgp->dev);
2739 rtnl_unlock();
2740}
2741
2742/*
2743 * We use our own timer routine rather than relying upon
2744 * netdev->tx_timeout because we have a very large hardware transmit
2745 * queue. Due to the large queue, the netdev->tx_timeout function
2746 * cannot detect a NIC with a parity error in a timely fashion if the
2747 * NIC is lightly loaded.
2748 */
2749static void myri10ge_watchdog_timer(unsigned long arg)
2750{
2751 struct myri10ge_priv *mgp;
2752
2753 mgp = (struct myri10ge_priv *)arg;
Brice Goglinc7dab992006-12-11 11:25:42 +01002754
2755 if (mgp->rx_small.watchdog_needed) {
2756 myri10ge_alloc_rx_pages(mgp, &mgp->rx_small,
2757 mgp->small_bytes + MXGEFW_PAD, 1);
2758 if (mgp->rx_small.fill_cnt - mgp->rx_small.cnt >=
2759 myri10ge_fill_thresh)
2760 mgp->rx_small.watchdog_needed = 0;
2761 }
2762 if (mgp->rx_big.watchdog_needed) {
2763 myri10ge_alloc_rx_pages(mgp, &mgp->rx_big, mgp->big_bytes, 1);
2764 if (mgp->rx_big.fill_cnt - mgp->rx_big.cnt >=
2765 myri10ge_fill_thresh)
2766 mgp->rx_big.watchdog_needed = 0;
2767 }
2768
Brice Goglin0da34b62006-05-23 06:10:15 -04002769 if (mgp->tx.req != mgp->tx.done &&
Brice Goglinc54772e2006-07-30 00:14:15 -04002770 mgp->tx.done == mgp->watchdog_tx_done &&
2771 mgp->watchdog_tx_req != mgp->watchdog_tx_done)
Brice Goglin0da34b62006-05-23 06:10:15 -04002772 /* nic seems like it might be stuck.. */
2773 schedule_work(&mgp->watchdog_work);
2774 else
2775 /* rearm timer */
2776 mod_timer(&mgp->watchdog_timer,
2777 jiffies + myri10ge_watchdog_timeout * HZ);
2778
2779 mgp->watchdog_tx_done = mgp->tx.done;
Brice Goglinc54772e2006-07-30 00:14:15 -04002780 mgp->watchdog_tx_req = mgp->tx.req;
Brice Goglin0da34b62006-05-23 06:10:15 -04002781}
2782
2783static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
2784{
2785 struct net_device *netdev;
2786 struct myri10ge_priv *mgp;
2787 struct device *dev = &pdev->dev;
2788 size_t bytes;
2789 int i;
2790 int status = -ENXIO;
2791 int cap;
2792 int dac_enabled;
2793 u16 val;
2794
2795 netdev = alloc_etherdev(sizeof(*mgp));
2796 if (netdev == NULL) {
2797 dev_err(dev, "Could not allocate ethernet device\n");
2798 return -ENOMEM;
2799 }
2800
2801 mgp = netdev_priv(netdev);
2802 memset(mgp, 0, sizeof(*mgp));
2803 mgp->dev = netdev;
2804 mgp->pdev = pdev;
2805 mgp->csum_flag = MXGEFW_FLAGS_CKSUM;
2806 mgp->pause = myri10ge_flow_control;
2807 mgp->intr_coal_delay = myri10ge_intr_coal_delay;
Brice Goglinc58ac5c2006-08-21 17:36:49 -04002808 mgp->msg_enable = netif_msg_init(myri10ge_debug, MYRI10GE_MSG_DEFAULT);
Brice Goglin0da34b62006-05-23 06:10:15 -04002809 init_waitqueue_head(&mgp->down_wq);
2810
2811 if (pci_enable_device(pdev)) {
2812 dev_err(&pdev->dev, "pci_enable_device call failed\n");
2813 status = -ENODEV;
2814 goto abort_with_netdev;
2815 }
2816 myri10ge_select_firmware(mgp);
2817
2818 /* Find the vendor-specific cap so we can check
2819 * the reboot register later on */
2820 mgp->vendor_specific_offset
2821 = pci_find_capability(pdev, PCI_CAP_ID_VNDR);
2822
2823 /* Set our max read request to 4KB */
2824 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
2825 if (cap < 64) {
2826 dev_err(&pdev->dev, "Bad PCI_CAP_ID_EXP location %d\n", cap);
2827 goto abort_with_netdev;
2828 }
2829 status = pci_read_config_word(pdev, cap + PCI_EXP_DEVCTL, &val);
2830 if (status != 0) {
2831 dev_err(&pdev->dev, "Error %d reading PCI_EXP_DEVCTL\n",
2832 status);
2833 goto abort_with_netdev;
2834 }
2835 val = (val & ~PCI_EXP_DEVCTL_READRQ) | (5 << 12);
2836 status = pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL, val);
2837 if (status != 0) {
2838 dev_err(&pdev->dev, "Error %d writing PCI_EXP_DEVCTL\n",
2839 status);
2840 goto abort_with_netdev;
2841 }
2842
2843 pci_set_master(pdev);
2844 dac_enabled = 1;
2845 status = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
2846 if (status != 0) {
2847 dac_enabled = 0;
2848 dev_err(&pdev->dev,
2849 "64-bit pci address mask was refused, trying 32-bit");
2850 status = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2851 }
2852 if (status != 0) {
2853 dev_err(&pdev->dev, "Error %d setting DMA mask\n", status);
2854 goto abort_with_netdev;
2855 }
Brice Goglinb10c0662006-06-08 10:25:00 -04002856 mgp->cmd = dma_alloc_coherent(&pdev->dev, sizeof(*mgp->cmd),
2857 &mgp->cmd_bus, GFP_KERNEL);
Brice Goglin0da34b62006-05-23 06:10:15 -04002858 if (mgp->cmd == NULL)
2859 goto abort_with_netdev;
2860
Brice Goglinb10c0662006-06-08 10:25:00 -04002861 mgp->fw_stats = dma_alloc_coherent(&pdev->dev, sizeof(*mgp->fw_stats),
2862 &mgp->fw_stats_bus, GFP_KERNEL);
Brice Goglin0da34b62006-05-23 06:10:15 -04002863 if (mgp->fw_stats == NULL)
2864 goto abort_with_cmd;
2865
2866 mgp->board_span = pci_resource_len(pdev, 0);
2867 mgp->iomem_base = pci_resource_start(pdev, 0);
2868 mgp->mtrr = -1;
Brice Goglin276e26c2007-03-07 20:02:32 +01002869 mgp->wc_enabled = 0;
Brice Goglin0da34b62006-05-23 06:10:15 -04002870#ifdef CONFIG_MTRR
2871 mgp->mtrr = mtrr_add(mgp->iomem_base, mgp->board_span,
2872 MTRR_TYPE_WRCOMB, 1);
Brice Goglin276e26c2007-03-07 20:02:32 +01002873 if (mgp->mtrr >= 0)
2874 mgp->wc_enabled = 1;
Brice Goglin0da34b62006-05-23 06:10:15 -04002875#endif
2876 /* Hack. need to get rid of these magic numbers */
2877 mgp->sram_size =
2878 2 * 1024 * 1024 - (2 * (48 * 1024) + (32 * 1024)) - 0x100;
2879 if (mgp->sram_size > mgp->board_span) {
2880 dev_err(&pdev->dev, "board span %ld bytes too small\n",
2881 mgp->board_span);
2882 goto abort_with_wc;
2883 }
2884 mgp->sram = ioremap(mgp->iomem_base, mgp->board_span);
2885 if (mgp->sram == NULL) {
2886 dev_err(&pdev->dev, "ioremap failed for %ld bytes at 0x%lx\n",
2887 mgp->board_span, mgp->iomem_base);
2888 status = -ENXIO;
2889 goto abort_with_wc;
2890 }
2891 memcpy_fromio(mgp->eeprom_strings,
2892 mgp->sram + mgp->sram_size - MYRI10GE_EEPROM_STRINGS_SIZE,
2893 MYRI10GE_EEPROM_STRINGS_SIZE);
2894 memset(mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE - 2, 0, 2);
2895 status = myri10ge_read_mac_addr(mgp);
2896 if (status)
2897 goto abort_with_ioremap;
2898
2899 for (i = 0; i < ETH_ALEN; i++)
2900 netdev->dev_addr[i] = mgp->mac_addr[i];
2901
2902 /* allocate rx done ring */
2903 bytes = myri10ge_max_intr_slots * sizeof(*mgp->rx_done.entry);
Brice Goglinb10c0662006-06-08 10:25:00 -04002904 mgp->rx_done.entry = dma_alloc_coherent(&pdev->dev, bytes,
2905 &mgp->rx_done.bus, GFP_KERNEL);
Brice Goglin0da34b62006-05-23 06:10:15 -04002906 if (mgp->rx_done.entry == NULL)
2907 goto abort_with_ioremap;
2908 memset(mgp->rx_done.entry, 0, bytes);
2909
2910 status = myri10ge_load_firmware(mgp);
2911 if (status != 0) {
2912 dev_err(&pdev->dev, "failed to load firmware\n");
2913 goto abort_with_rx_done;
2914 }
2915
2916 status = myri10ge_reset(mgp);
2917 if (status != 0) {
2918 dev_err(&pdev->dev, "failed reset\n");
2919 goto abort_with_firmware;
2920 }
2921
Brice Goglin0da34b62006-05-23 06:10:15 -04002922 pci_set_drvdata(pdev, mgp);
2923 if ((myri10ge_initial_mtu + ETH_HLEN) > MYRI10GE_MAX_ETHER_MTU)
2924 myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN;
2925 if ((myri10ge_initial_mtu + ETH_HLEN) < 68)
2926 myri10ge_initial_mtu = 68;
2927 netdev->mtu = myri10ge_initial_mtu;
2928 netdev->open = myri10ge_open;
2929 netdev->stop = myri10ge_close;
2930 netdev->hard_start_xmit = myri10ge_xmit;
2931 netdev->get_stats = myri10ge_get_stats;
2932 netdev->base_addr = mgp->iomem_base;
Brice Goglin0da34b62006-05-23 06:10:15 -04002933 netdev->change_mtu = myri10ge_change_mtu;
2934 netdev->set_multicast_list = myri10ge_set_multicast_list;
2935 netdev->set_mac_address = myri10ge_set_mac_address;
2936 netdev->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO;
2937 if (dac_enabled)
2938 netdev->features |= NETIF_F_HIGHDMA;
2939 netdev->poll = myri10ge_poll;
2940 netdev->weight = myri10ge_napi_weight;
2941
Brice Goglin21d05db2007-01-09 21:05:04 +01002942 /* make sure we can get an irq, and that MSI can be
2943 * setup (if available). Also ensure netdev->irq
2944 * is set to correct value if MSI is enabled */
2945 status = myri10ge_request_irq(mgp);
2946 if (status != 0)
2947 goto abort_with_firmware;
2948 netdev->irq = pdev->irq;
2949 myri10ge_free_irq(mgp);
2950
Brice Goglin0da34b62006-05-23 06:10:15 -04002951 /* Save configuration space to be restored if the
2952 * nic resets due to a parity error */
Brice Goglin83f6e152006-12-18 11:52:02 +01002953 pci_save_state(pdev);
Brice Goglin0da34b62006-05-23 06:10:15 -04002954
2955 /* Setup the watchdog timer */
2956 setup_timer(&mgp->watchdog_timer, myri10ge_watchdog_timer,
2957 (unsigned long)mgp);
2958
2959 SET_ETHTOOL_OPS(netdev, &myri10ge_ethtool_ops);
David Howellsc4028952006-11-22 14:57:56 +00002960 INIT_WORK(&mgp->watchdog_work, myri10ge_watchdog);
Brice Goglin0da34b62006-05-23 06:10:15 -04002961 status = register_netdev(netdev);
2962 if (status != 0) {
2963 dev_err(&pdev->dev, "register_netdev failed: %d\n", status);
Brice Goglin7adda302006-12-18 11:50:00 +01002964 goto abort_with_state;
Brice Goglin0da34b62006-05-23 06:10:15 -04002965 }
Brice Goglin21d05db2007-01-09 21:05:04 +01002966 dev_info(dev, "%s IRQ %d, tx bndry %d, fw %s, WC %s\n",
2967 (mgp->msi_enabled ? "MSI" : "xPIC"),
2968 netdev->irq, mgp->tx.boundary, mgp->fw_name,
Brice Goglin276e26c2007-03-07 20:02:32 +01002969 (mgp->wc_enabled ? "Enabled" : "Disabled"));
Brice Goglin0da34b62006-05-23 06:10:15 -04002970
2971 return 0;
2972
Brice Goglin7adda302006-12-18 11:50:00 +01002973abort_with_state:
Brice Goglin83f6e152006-12-18 11:52:02 +01002974 pci_restore_state(pdev);
Brice Goglin0da34b62006-05-23 06:10:15 -04002975
2976abort_with_firmware:
2977 myri10ge_dummy_rdma(mgp, 0);
2978
2979abort_with_rx_done:
2980 bytes = myri10ge_max_intr_slots * sizeof(*mgp->rx_done.entry);
Brice Goglinb10c0662006-06-08 10:25:00 -04002981 dma_free_coherent(&pdev->dev, bytes,
2982 mgp->rx_done.entry, mgp->rx_done.bus);
Brice Goglin0da34b62006-05-23 06:10:15 -04002983
2984abort_with_ioremap:
2985 iounmap(mgp->sram);
2986
2987abort_with_wc:
2988#ifdef CONFIG_MTRR
2989 if (mgp->mtrr >= 0)
2990 mtrr_del(mgp->mtrr, mgp->iomem_base, mgp->board_span);
2991#endif
Brice Goglinb10c0662006-06-08 10:25:00 -04002992 dma_free_coherent(&pdev->dev, sizeof(*mgp->fw_stats),
2993 mgp->fw_stats, mgp->fw_stats_bus);
Brice Goglin0da34b62006-05-23 06:10:15 -04002994
2995abort_with_cmd:
Brice Goglinb10c0662006-06-08 10:25:00 -04002996 dma_free_coherent(&pdev->dev, sizeof(*mgp->cmd),
2997 mgp->cmd, mgp->cmd_bus);
Brice Goglin0da34b62006-05-23 06:10:15 -04002998
2999abort_with_netdev:
3000
3001 free_netdev(netdev);
3002 return status;
3003}
3004
3005/*
3006 * myri10ge_remove
3007 *
3008 * Does what is necessary to shutdown one Myrinet device. Called
3009 * once for each Myrinet card by the kernel when a module is
3010 * unloaded.
3011 */
3012static void myri10ge_remove(struct pci_dev *pdev)
3013{
3014 struct myri10ge_priv *mgp;
3015 struct net_device *netdev;
3016 size_t bytes;
3017
3018 mgp = pci_get_drvdata(pdev);
3019 if (mgp == NULL)
3020 return;
3021
3022 flush_scheduled_work();
3023 netdev = mgp->dev;
3024 unregister_netdev(netdev);
Brice Goglin0da34b62006-05-23 06:10:15 -04003025
3026 myri10ge_dummy_rdma(mgp, 0);
3027
Brice Goglin7adda302006-12-18 11:50:00 +01003028 /* avoid a memory leak */
Brice Goglin83f6e152006-12-18 11:52:02 +01003029 pci_restore_state(pdev);
Brice Goglin7adda302006-12-18 11:50:00 +01003030
Brice Goglin0da34b62006-05-23 06:10:15 -04003031 bytes = myri10ge_max_intr_slots * sizeof(*mgp->rx_done.entry);
Brice Goglinb10c0662006-06-08 10:25:00 -04003032 dma_free_coherent(&pdev->dev, bytes,
3033 mgp->rx_done.entry, mgp->rx_done.bus);
Brice Goglin0da34b62006-05-23 06:10:15 -04003034
3035 iounmap(mgp->sram);
3036
3037#ifdef CONFIG_MTRR
3038 if (mgp->mtrr >= 0)
3039 mtrr_del(mgp->mtrr, mgp->iomem_base, mgp->board_span);
3040#endif
Brice Goglinb10c0662006-06-08 10:25:00 -04003041 dma_free_coherent(&pdev->dev, sizeof(*mgp->fw_stats),
3042 mgp->fw_stats, mgp->fw_stats_bus);
Brice Goglin0da34b62006-05-23 06:10:15 -04003043
Brice Goglinb10c0662006-06-08 10:25:00 -04003044 dma_free_coherent(&pdev->dev, sizeof(*mgp->cmd),
3045 mgp->cmd, mgp->cmd_bus);
Brice Goglin0da34b62006-05-23 06:10:15 -04003046
3047 free_netdev(netdev);
3048 pci_set_drvdata(pdev, NULL);
3049}
3050
Brice Goglinb10c0662006-06-08 10:25:00 -04003051#define PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E 0x0008
Brice Goglin0da34b62006-05-23 06:10:15 -04003052
3053static struct pci_device_id myri10ge_pci_tbl[] = {
Brice Goglinb10c0662006-06-08 10:25:00 -04003054 {PCI_DEVICE(PCI_VENDOR_ID_MYRICOM, PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E)},
Brice Goglin0da34b62006-05-23 06:10:15 -04003055 {0},
3056};
3057
3058static struct pci_driver myri10ge_driver = {
3059 .name = "myri10ge",
3060 .probe = myri10ge_probe,
3061 .remove = myri10ge_remove,
3062 .id_table = myri10ge_pci_tbl,
3063#ifdef CONFIG_PM
3064 .suspend = myri10ge_suspend,
3065 .resume = myri10ge_resume,
3066#endif
3067};
3068
3069static __init int myri10ge_init_module(void)
3070{
3071 printk(KERN_INFO "%s: Version %s\n", myri10ge_driver.name,
3072 MYRI10GE_VERSION_STR);
3073 return pci_register_driver(&myri10ge_driver);
3074}
3075
3076module_init(myri10ge_init_module);
3077
3078static __exit void myri10ge_cleanup_module(void)
3079{
3080 pci_unregister_driver(&myri10ge_driver);
3081}
3082
3083module_exit(myri10ge_cleanup_module);