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0da34b6d BG |
1 | /************************************************************************* |
2 | * myri10ge.c: Myricom Myri-10G Ethernet driver. | |
3 | * | |
4a2e612a | 4 | * Copyright (C) 2005 - 2007 Myricom, Inc. |
0da34b6d BG |
5 | * 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 | * | |
4a2e612a BG |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
20 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
0da34b6d | 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
4a2e612a BG |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
23 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
29 | * POSSIBILITY OF SUCH DAMAGE. | |
0da34b6d BG |
30 | * |
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> | |
b10c0668 | 47 | #include <linux/dma-mapping.h> |
0da34b6d BG |
48 | #include <linux/etherdevice.h> |
49 | #include <linux/if_ether.h> | |
50 | #include <linux/if_vlan.h> | |
1e6e9342 | 51 | #include <linux/inet_lro.h> |
0da34b6d BG |
52 | #include <linux/ip.h> |
53 | #include <linux/inet.h> | |
54 | #include <linux/in.h> | |
55 | #include <linux/ethtool.h> | |
56 | #include <linux/firmware.h> | |
57 | #include <linux/delay.h> | |
58 | #include <linux/version.h> | |
59 | #include <linux/timer.h> | |
60 | #include <linux/vmalloc.h> | |
61 | #include <linux/crc32.h> | |
62 | #include <linux/moduleparam.h> | |
63 | #include <linux/io.h> | |
199126a2 | 64 | #include <linux/log2.h> |
0da34b6d | 65 | #include <net/checksum.h> |
1e6e9342 AG |
66 | #include <net/ip.h> |
67 | #include <net/tcp.h> | |
0da34b6d BG |
68 | #include <asm/byteorder.h> |
69 | #include <asm/io.h> | |
0da34b6d BG |
70 | #include <asm/processor.h> |
71 | #ifdef CONFIG_MTRR | |
72 | #include <asm/mtrr.h> | |
73 | #endif | |
74 | ||
75 | #include "myri10ge_mcp.h" | |
76 | #include "myri10ge_mcp_gen_header.h" | |
77 | ||
e0d7c526 | 78 | #define MYRI10GE_VERSION_STR "1.3.2-1.287" |
0da34b6d BG |
79 | |
80 | MODULE_DESCRIPTION("Myricom 10G driver (10GbE)"); | |
81 | MODULE_AUTHOR("Maintainer: help@myri.com"); | |
82 | MODULE_VERSION(MYRI10GE_VERSION_STR); | |
83 | MODULE_LICENSE("Dual BSD/GPL"); | |
84 | ||
85 | #define MYRI10GE_MAX_ETHER_MTU 9014 | |
86 | ||
87 | #define MYRI10GE_ETH_STOPPED 0 | |
88 | #define MYRI10GE_ETH_STOPPING 1 | |
89 | #define MYRI10GE_ETH_STARTING 2 | |
90 | #define MYRI10GE_ETH_RUNNING 3 | |
91 | #define MYRI10GE_ETH_OPEN_FAILED 4 | |
92 | ||
93 | #define MYRI10GE_EEPROM_STRINGS_SIZE 256 | |
94 | #define MYRI10GE_MAX_SEND_DESC_TSO ((65536 / 2048) * 2) | |
1e6e9342 AG |
95 | #define MYRI10GE_MAX_LRO_DESCRIPTORS 8 |
96 | #define MYRI10GE_LRO_MAX_PKTS 64 | |
0da34b6d | 97 | |
40f6cff5 | 98 | #define MYRI10GE_NO_CONFIRM_DATA htonl(0xffffffff) |
0da34b6d BG |
99 | #define MYRI10GE_NO_RESPONSE_RESULT 0xffffffff |
100 | ||
dd50f336 BG |
101 | #define MYRI10GE_ALLOC_ORDER 0 |
102 | #define MYRI10GE_ALLOC_SIZE ((1 << MYRI10GE_ALLOC_ORDER) * PAGE_SIZE) | |
103 | #define MYRI10GE_MAX_FRAGS_PER_FRAME (MYRI10GE_MAX_ETHER_MTU/MYRI10GE_ALLOC_SIZE + 1) | |
104 | ||
0da34b6d | 105 | struct myri10ge_rx_buffer_state { |
dd50f336 BG |
106 | struct page *page; |
107 | int page_offset; | |
0da34b6d BG |
108 | DECLARE_PCI_UNMAP_ADDR(bus) |
109 | DECLARE_PCI_UNMAP_LEN(len) | |
110 | }; | |
111 | ||
112 | struct myri10ge_tx_buffer_state { | |
113 | struct sk_buff *skb; | |
114 | int last; | |
115 | DECLARE_PCI_UNMAP_ADDR(bus) | |
116 | DECLARE_PCI_UNMAP_LEN(len) | |
117 | }; | |
118 | ||
119 | struct myri10ge_cmd { | |
120 | u32 data0; | |
121 | u32 data1; | |
122 | u32 data2; | |
123 | }; | |
124 | ||
125 | struct myri10ge_rx_buf { | |
126 | struct mcp_kreq_ether_recv __iomem *lanai; /* lanai ptr for recv ring */ | |
127 | u8 __iomem *wc_fifo; /* w/c rx dma addr fifo address */ | |
128 | struct mcp_kreq_ether_recv *shadow; /* host shadow of recv ring */ | |
129 | struct myri10ge_rx_buffer_state *info; | |
dd50f336 BG |
130 | struct page *page; |
131 | dma_addr_t bus; | |
132 | int page_offset; | |
0da34b6d | 133 | int cnt; |
dd50f336 | 134 | int fill_cnt; |
0da34b6d BG |
135 | int alloc_fail; |
136 | int mask; /* number of rx slots -1 */ | |
dd50f336 | 137 | int watchdog_needed; |
0da34b6d BG |
138 | }; |
139 | ||
140 | struct myri10ge_tx_buf { | |
141 | struct mcp_kreq_ether_send __iomem *lanai; /* lanai ptr for sendq */ | |
142 | u8 __iomem *wc_fifo; /* w/c send fifo address */ | |
143 | struct mcp_kreq_ether_send *req_list; /* host shadow of sendq */ | |
144 | char *req_bytes; | |
145 | struct myri10ge_tx_buffer_state *info; | |
146 | int mask; /* number of transmit slots -1 */ | |
147 | int boundary; /* boundary transmits cannot cross */ | |
148 | int req ____cacheline_aligned; /* transmit slots submitted */ | |
149 | int pkt_start; /* packets started */ | |
150 | int done ____cacheline_aligned; /* transmit slots completed */ | |
151 | int pkt_done; /* packets completed */ | |
152 | }; | |
153 | ||
154 | struct myri10ge_rx_done { | |
155 | struct mcp_slot *entry; | |
156 | dma_addr_t bus; | |
157 | int cnt; | |
158 | int idx; | |
1e6e9342 AG |
159 | struct net_lro_mgr lro_mgr; |
160 | struct net_lro_desc lro_desc[MYRI10GE_MAX_LRO_DESCRIPTORS]; | |
0da34b6d BG |
161 | }; |
162 | ||
163 | struct myri10ge_priv { | |
164 | int running; /* running? */ | |
165 | int csum_flag; /* rx_csums? */ | |
166 | struct myri10ge_tx_buf tx; /* transmit ring */ | |
167 | struct myri10ge_rx_buf rx_small; | |
168 | struct myri10ge_rx_buf rx_big; | |
169 | struct myri10ge_rx_done rx_done; | |
170 | int small_bytes; | |
dd50f336 | 171 | int big_bytes; |
0da34b6d | 172 | struct net_device *dev; |
bea3348e | 173 | struct napi_struct napi; |
0da34b6d BG |
174 | struct net_device_stats stats; |
175 | u8 __iomem *sram; | |
176 | int sram_size; | |
177 | unsigned long board_span; | |
178 | unsigned long iomem_base; | |
40f6cff5 AV |
179 | __be32 __iomem *irq_claim; |
180 | __be32 __iomem *irq_deassert; | |
0da34b6d BG |
181 | char *mac_addr_string; |
182 | struct mcp_cmd_response *cmd; | |
183 | dma_addr_t cmd_bus; | |
184 | struct mcp_irq_data *fw_stats; | |
185 | dma_addr_t fw_stats_bus; | |
186 | struct pci_dev *pdev; | |
187 | int msi_enabled; | |
40f6cff5 | 188 | __be32 link_state; |
0da34b6d BG |
189 | unsigned int rdma_tags_available; |
190 | int intr_coal_delay; | |
40f6cff5 | 191 | __be32 __iomem *intr_coal_delay_ptr; |
0da34b6d | 192 | int mtrr; |
276e26c3 | 193 | int wc_enabled; |
0da34b6d BG |
194 | int wake_queue; |
195 | int stop_queue; | |
196 | int down_cnt; | |
197 | wait_queue_head_t down_wq; | |
198 | struct work_struct watchdog_work; | |
199 | struct timer_list watchdog_timer; | |
200 | int watchdog_tx_done; | |
c54772e7 | 201 | int watchdog_tx_req; |
626fda94 | 202 | int watchdog_pause; |
0da34b6d BG |
203 | int watchdog_resets; |
204 | int tx_linearized; | |
205 | int pause; | |
206 | char *fw_name; | |
207 | char eeprom_strings[MYRI10GE_EEPROM_STRINGS_SIZE]; | |
208 | char fw_version[128]; | |
9dc6f0e7 BG |
209 | int fw_ver_major; |
210 | int fw_ver_minor; | |
211 | int fw_ver_tiny; | |
212 | int adopted_rx_filter_bug; | |
0da34b6d BG |
213 | u8 mac_addr[6]; /* eeprom mac address */ |
214 | unsigned long serial_number; | |
215 | int vendor_specific_offset; | |
85a7ea1b | 216 | int fw_multicast_support; |
4f93fde0 BG |
217 | unsigned long features; |
218 | u32 max_tso6; | |
0da34b6d BG |
219 | u32 read_dma; |
220 | u32 write_dma; | |
221 | u32 read_write_dma; | |
c58ac5ca BG |
222 | u32 link_changes; |
223 | u32 msg_enable; | |
0da34b6d BG |
224 | }; |
225 | ||
226 | static char *myri10ge_fw_unaligned = "myri10ge_ethp_z8e.dat"; | |
227 | static char *myri10ge_fw_aligned = "myri10ge_eth_z8e.dat"; | |
228 | ||
229 | static char *myri10ge_fw_name = NULL; | |
230 | module_param(myri10ge_fw_name, charp, S_IRUGO | S_IWUSR); | |
231 | MODULE_PARM_DESC(myri10ge_fw_name, "Firmware image name\n"); | |
232 | ||
233 | static int myri10ge_ecrc_enable = 1; | |
234 | module_param(myri10ge_ecrc_enable, int, S_IRUGO); | |
235 | MODULE_PARM_DESC(myri10ge_ecrc_enable, "Enable Extended CRC on PCI-E\n"); | |
236 | ||
237 | static int myri10ge_max_intr_slots = 1024; | |
238 | module_param(myri10ge_max_intr_slots, int, S_IRUGO); | |
239 | MODULE_PARM_DESC(myri10ge_max_intr_slots, "Interrupt queue slots\n"); | |
240 | ||
241 | static int myri10ge_small_bytes = -1; /* -1 == auto */ | |
242 | module_param(myri10ge_small_bytes, int, S_IRUGO | S_IWUSR); | |
243 | MODULE_PARM_DESC(myri10ge_small_bytes, "Threshold of small packets\n"); | |
244 | ||
245 | static int myri10ge_msi = 1; /* enable msi by default */ | |
3621cec5 | 246 | module_param(myri10ge_msi, int, S_IRUGO | S_IWUSR); |
0da34b6d BG |
247 | MODULE_PARM_DESC(myri10ge_msi, "Enable Message Signalled Interrupts\n"); |
248 | ||
f761fae1 | 249 | static int myri10ge_intr_coal_delay = 75; |
0da34b6d BG |
250 | module_param(myri10ge_intr_coal_delay, int, S_IRUGO); |
251 | MODULE_PARM_DESC(myri10ge_intr_coal_delay, "Interrupt coalescing delay\n"); | |
252 | ||
253 | static int myri10ge_flow_control = 1; | |
254 | module_param(myri10ge_flow_control, int, S_IRUGO); | |
255 | MODULE_PARM_DESC(myri10ge_flow_control, "Pause parameter\n"); | |
256 | ||
257 | static int myri10ge_deassert_wait = 1; | |
258 | module_param(myri10ge_deassert_wait, int, S_IRUGO | S_IWUSR); | |
259 | MODULE_PARM_DESC(myri10ge_deassert_wait, | |
260 | "Wait when deasserting legacy interrupts\n"); | |
261 | ||
262 | static int myri10ge_force_firmware = 0; | |
263 | module_param(myri10ge_force_firmware, int, S_IRUGO); | |
264 | MODULE_PARM_DESC(myri10ge_force_firmware, | |
265 | "Force firmware to assume aligned completions\n"); | |
266 | ||
0da34b6d BG |
267 | static int myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN; |
268 | module_param(myri10ge_initial_mtu, int, S_IRUGO); | |
269 | MODULE_PARM_DESC(myri10ge_initial_mtu, "Initial MTU\n"); | |
270 | ||
271 | static int myri10ge_napi_weight = 64; | |
272 | module_param(myri10ge_napi_weight, int, S_IRUGO); | |
273 | MODULE_PARM_DESC(myri10ge_napi_weight, "Set NAPI weight\n"); | |
274 | ||
275 | static int myri10ge_watchdog_timeout = 1; | |
276 | module_param(myri10ge_watchdog_timeout, int, S_IRUGO); | |
277 | MODULE_PARM_DESC(myri10ge_watchdog_timeout, "Set watchdog timeout\n"); | |
278 | ||
279 | static int myri10ge_max_irq_loops = 1048576; | |
280 | module_param(myri10ge_max_irq_loops, int, S_IRUGO); | |
281 | MODULE_PARM_DESC(myri10ge_max_irq_loops, | |
282 | "Set stuck legacy IRQ detection threshold\n"); | |
283 | ||
c58ac5ca BG |
284 | #define MYRI10GE_MSG_DEFAULT NETIF_MSG_LINK |
285 | ||
286 | static int myri10ge_debug = -1; /* defaults above */ | |
287 | module_param(myri10ge_debug, int, 0); | |
288 | MODULE_PARM_DESC(myri10ge_debug, "Debug level (0=none,...,16=all)"); | |
289 | ||
1e6e9342 AG |
290 | static int myri10ge_lro = 1; |
291 | module_param(myri10ge_lro, int, S_IRUGO); | |
292 | MODULE_PARM_DESC(myri10ge_lro, "Enable large receive offload\n"); | |
293 | ||
294 | static int myri10ge_lro_max_pkts = MYRI10GE_LRO_MAX_PKTS; | |
295 | module_param(myri10ge_lro_max_pkts, int, S_IRUGO); | |
296 | MODULE_PARM_DESC(myri10ge_lro, "Number of LRO packets to be aggregated\n"); | |
297 | ||
dd50f336 BG |
298 | static int myri10ge_fill_thresh = 256; |
299 | module_param(myri10ge_fill_thresh, int, S_IRUGO | S_IWUSR); | |
300 | MODULE_PARM_DESC(myri10ge_fill_thresh, "Number of empty rx slots allowed\n"); | |
301 | ||
f181137f BG |
302 | static int myri10ge_reset_recover = 1; |
303 | ||
f761fae1 | 304 | static int myri10ge_wcfifo = 0; |
6ebc087a BG |
305 | module_param(myri10ge_wcfifo, int, S_IRUGO); |
306 | MODULE_PARM_DESC(myri10ge_wcfifo, "Enable WC Fifo when WC is enabled\n"); | |
307 | ||
0da34b6d BG |
308 | #define MYRI10GE_FW_OFFSET 1024*1024 |
309 | #define MYRI10GE_HIGHPART_TO_U32(X) \ | |
310 | (sizeof (X) == 8) ? ((u32)((u64)(X) >> 32)) : (0) | |
311 | #define MYRI10GE_LOWPART_TO_U32(X) ((u32)(X)) | |
312 | ||
313 | #define myri10ge_pio_copy(to,from,size) __iowrite64_copy(to,from,size/8) | |
314 | ||
2f76216f | 315 | static void myri10ge_set_multicast_list(struct net_device *dev); |
4f93fde0 | 316 | static int myri10ge_sw_tso(struct sk_buff *skb, struct net_device *dev); |
2f76216f | 317 | |
6250223e | 318 | static inline void put_be32(__be32 val, __be32 __iomem * p) |
40f6cff5 | 319 | { |
6250223e | 320 | __raw_writel((__force __u32) val, (__force void __iomem *)p); |
40f6cff5 AV |
321 | } |
322 | ||
0da34b6d BG |
323 | static int |
324 | myri10ge_send_cmd(struct myri10ge_priv *mgp, u32 cmd, | |
325 | struct myri10ge_cmd *data, int atomic) | |
326 | { | |
327 | struct mcp_cmd *buf; | |
328 | char buf_bytes[sizeof(*buf) + 8]; | |
329 | struct mcp_cmd_response *response = mgp->cmd; | |
e700f9f4 | 330 | char __iomem *cmd_addr = mgp->sram + MXGEFW_ETH_CMD; |
0da34b6d BG |
331 | u32 dma_low, dma_high, result, value; |
332 | int sleep_total = 0; | |
333 | ||
334 | /* ensure buf is aligned to 8 bytes */ | |
335 | buf = (struct mcp_cmd *)ALIGN((unsigned long)buf_bytes, 8); | |
336 | ||
337 | buf->data0 = htonl(data->data0); | |
338 | buf->data1 = htonl(data->data1); | |
339 | buf->data2 = htonl(data->data2); | |
340 | buf->cmd = htonl(cmd); | |
341 | dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus); | |
342 | dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus); | |
343 | ||
344 | buf->response_addr.low = htonl(dma_low); | |
345 | buf->response_addr.high = htonl(dma_high); | |
40f6cff5 | 346 | response->result = htonl(MYRI10GE_NO_RESPONSE_RESULT); |
0da34b6d BG |
347 | mb(); |
348 | myri10ge_pio_copy(cmd_addr, buf, sizeof(*buf)); | |
349 | ||
350 | /* wait up to 15ms. Longest command is the DMA benchmark, | |
351 | * which is capped at 5ms, but runs from a timeout handler | |
352 | * that runs every 7.8ms. So a 15ms timeout leaves us with | |
353 | * a 2.2ms margin | |
354 | */ | |
355 | if (atomic) { | |
356 | /* if atomic is set, do not sleep, | |
357 | * and try to get the completion quickly | |
358 | * (1ms will be enough for those commands) */ | |
359 | for (sleep_total = 0; | |
360 | sleep_total < 1000 | |
40f6cff5 | 361 | && response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT); |
0da34b6d BG |
362 | sleep_total += 10) |
363 | udelay(10); | |
364 | } else { | |
365 | /* use msleep for most command */ | |
366 | for (sleep_total = 0; | |
367 | sleep_total < 15 | |
40f6cff5 | 368 | && response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT); |
0da34b6d BG |
369 | sleep_total++) |
370 | msleep(1); | |
371 | } | |
372 | ||
373 | result = ntohl(response->result); | |
374 | value = ntohl(response->data); | |
375 | if (result != MYRI10GE_NO_RESPONSE_RESULT) { | |
376 | if (result == 0) { | |
377 | data->data0 = value; | |
378 | return 0; | |
85a7ea1b BG |
379 | } else if (result == MXGEFW_CMD_UNKNOWN) { |
380 | return -ENOSYS; | |
5443e9ea BG |
381 | } else if (result == MXGEFW_CMD_ERROR_UNALIGNED) { |
382 | return -E2BIG; | |
0da34b6d BG |
383 | } else { |
384 | dev_err(&mgp->pdev->dev, | |
385 | "command %d failed, result = %d\n", | |
386 | cmd, result); | |
387 | return -ENXIO; | |
388 | } | |
389 | } | |
390 | ||
391 | dev_err(&mgp->pdev->dev, "command %d timed out, result = %d\n", | |
392 | cmd, result); | |
393 | return -EAGAIN; | |
394 | } | |
395 | ||
396 | /* | |
397 | * The eeprom strings on the lanaiX have the format | |
398 | * SN=x\0 | |
399 | * MAC=x:x:x:x:x:x\0 | |
400 | * PT:ddd mmm xx xx:xx:xx xx\0 | |
401 | * PV:ddd mmm xx xx:xx:xx xx\0 | |
402 | */ | |
403 | static int myri10ge_read_mac_addr(struct myri10ge_priv *mgp) | |
404 | { | |
405 | char *ptr, *limit; | |
406 | int i; | |
407 | ||
408 | ptr = mgp->eeprom_strings; | |
409 | limit = mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE; | |
410 | ||
411 | while (*ptr != '\0' && ptr < limit) { | |
412 | if (memcmp(ptr, "MAC=", 4) == 0) { | |
413 | ptr += 4; | |
414 | mgp->mac_addr_string = ptr; | |
415 | for (i = 0; i < 6; i++) { | |
416 | if ((ptr + 2) > limit) | |
417 | goto abort; | |
418 | mgp->mac_addr[i] = | |
419 | simple_strtoul(ptr, &ptr, 16); | |
420 | ptr += 1; | |
421 | } | |
422 | } | |
423 | if (memcmp((const void *)ptr, "SN=", 3) == 0) { | |
424 | ptr += 3; | |
425 | mgp->serial_number = simple_strtoul(ptr, &ptr, 10); | |
426 | } | |
427 | while (ptr < limit && *ptr++) ; | |
428 | } | |
429 | ||
430 | return 0; | |
431 | ||
432 | abort: | |
433 | dev_err(&mgp->pdev->dev, "failed to parse eeprom_strings\n"); | |
434 | return -ENXIO; | |
435 | } | |
436 | ||
437 | /* | |
438 | * Enable or disable periodic RDMAs from the host to make certain | |
439 | * chipsets resend dropped PCIe messages | |
440 | */ | |
441 | ||
442 | static void myri10ge_dummy_rdma(struct myri10ge_priv *mgp, int enable) | |
443 | { | |
444 | char __iomem *submit; | |
40f6cff5 | 445 | __be32 buf[16]; |
0da34b6d BG |
446 | u32 dma_low, dma_high; |
447 | int i; | |
448 | ||
449 | /* clear confirmation addr */ | |
450 | mgp->cmd->data = 0; | |
451 | mb(); | |
452 | ||
453 | /* send a rdma command to the PCIe engine, and wait for the | |
454 | * response in the confirmation address. The firmware should | |
455 | * write a -1 there to indicate it is alive and well | |
456 | */ | |
457 | dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus); | |
458 | dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus); | |
459 | ||
460 | buf[0] = htonl(dma_high); /* confirm addr MSW */ | |
461 | buf[1] = htonl(dma_low); /* confirm addr LSW */ | |
40f6cff5 | 462 | buf[2] = MYRI10GE_NO_CONFIRM_DATA; /* confirm data */ |
0da34b6d BG |
463 | buf[3] = htonl(dma_high); /* dummy addr MSW */ |
464 | buf[4] = htonl(dma_low); /* dummy addr LSW */ | |
465 | buf[5] = htonl(enable); /* enable? */ | |
466 | ||
e700f9f4 | 467 | submit = mgp->sram + MXGEFW_BOOT_DUMMY_RDMA; |
0da34b6d BG |
468 | |
469 | myri10ge_pio_copy(submit, &buf, sizeof(buf)); | |
470 | for (i = 0; mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 20; i++) | |
471 | msleep(1); | |
472 | if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA) | |
473 | dev_err(&mgp->pdev->dev, "dummy rdma %s failed\n", | |
474 | (enable ? "enable" : "disable")); | |
475 | } | |
476 | ||
477 | static int | |
478 | myri10ge_validate_firmware(struct myri10ge_priv *mgp, | |
479 | struct mcp_gen_header *hdr) | |
480 | { | |
481 | struct device *dev = &mgp->pdev->dev; | |
0da34b6d BG |
482 | |
483 | /* check firmware type */ | |
484 | if (ntohl(hdr->mcp_type) != MCP_TYPE_ETH) { | |
485 | dev_err(dev, "Bad firmware type: 0x%x\n", ntohl(hdr->mcp_type)); | |
486 | return -EINVAL; | |
487 | } | |
488 | ||
489 | /* save firmware version for ethtool */ | |
490 | strncpy(mgp->fw_version, hdr->version, sizeof(mgp->fw_version)); | |
491 | ||
9dc6f0e7 BG |
492 | sscanf(mgp->fw_version, "%d.%d.%d", &mgp->fw_ver_major, |
493 | &mgp->fw_ver_minor, &mgp->fw_ver_tiny); | |
0da34b6d | 494 | |
9dc6f0e7 BG |
495 | if (!(mgp->fw_ver_major == MXGEFW_VERSION_MAJOR |
496 | && mgp->fw_ver_minor == MXGEFW_VERSION_MINOR)) { | |
0da34b6d BG |
497 | dev_err(dev, "Found firmware version %s\n", mgp->fw_version); |
498 | dev_err(dev, "Driver needs %d.%d\n", MXGEFW_VERSION_MAJOR, | |
499 | MXGEFW_VERSION_MINOR); | |
500 | return -EINVAL; | |
501 | } | |
502 | return 0; | |
503 | } | |
504 | ||
505 | static int myri10ge_load_hotplug_firmware(struct myri10ge_priv *mgp, u32 * size) | |
506 | { | |
507 | unsigned crc, reread_crc; | |
508 | const struct firmware *fw; | |
509 | struct device *dev = &mgp->pdev->dev; | |
510 | struct mcp_gen_header *hdr; | |
511 | size_t hdr_offset; | |
512 | int status; | |
e454358a | 513 | unsigned i; |
0da34b6d BG |
514 | |
515 | if ((status = request_firmware(&fw, mgp->fw_name, dev)) < 0) { | |
516 | dev_err(dev, "Unable to load %s firmware image via hotplug\n", | |
517 | mgp->fw_name); | |
518 | status = -EINVAL; | |
519 | goto abort_with_nothing; | |
520 | } | |
521 | ||
522 | /* check size */ | |
523 | ||
524 | if (fw->size >= mgp->sram_size - MYRI10GE_FW_OFFSET || | |
525 | fw->size < MCP_HEADER_PTR_OFFSET + 4) { | |
526 | dev_err(dev, "Firmware size invalid:%d\n", (int)fw->size); | |
527 | status = -EINVAL; | |
528 | goto abort_with_fw; | |
529 | } | |
530 | ||
531 | /* check id */ | |
40f6cff5 | 532 | hdr_offset = ntohl(*(__be32 *) (fw->data + MCP_HEADER_PTR_OFFSET)); |
0da34b6d BG |
533 | if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > fw->size) { |
534 | dev_err(dev, "Bad firmware file\n"); | |
535 | status = -EINVAL; | |
536 | goto abort_with_fw; | |
537 | } | |
538 | hdr = (void *)(fw->data + hdr_offset); | |
539 | ||
540 | status = myri10ge_validate_firmware(mgp, hdr); | |
541 | if (status != 0) | |
542 | goto abort_with_fw; | |
543 | ||
544 | crc = crc32(~0, fw->data, fw->size); | |
e454358a BG |
545 | for (i = 0; i < fw->size; i += 256) { |
546 | myri10ge_pio_copy(mgp->sram + MYRI10GE_FW_OFFSET + i, | |
547 | fw->data + i, | |
548 | min(256U, (unsigned)(fw->size - i))); | |
549 | mb(); | |
550 | readb(mgp->sram); | |
b10c0668 | 551 | } |
0da34b6d BG |
552 | /* corruption checking is good for parity recovery and buggy chipset */ |
553 | memcpy_fromio(fw->data, mgp->sram + MYRI10GE_FW_OFFSET, fw->size); | |
554 | reread_crc = crc32(~0, fw->data, fw->size); | |
555 | if (crc != reread_crc) { | |
556 | dev_err(dev, "CRC failed(fw-len=%u), got 0x%x (expect 0x%x)\n", | |
557 | (unsigned)fw->size, reread_crc, crc); | |
558 | status = -EIO; | |
559 | goto abort_with_fw; | |
560 | } | |
561 | *size = (u32) fw->size; | |
562 | ||
563 | abort_with_fw: | |
564 | release_firmware(fw); | |
565 | ||
566 | abort_with_nothing: | |
567 | return status; | |
568 | } | |
569 | ||
570 | static int myri10ge_adopt_running_firmware(struct myri10ge_priv *mgp) | |
571 | { | |
572 | struct mcp_gen_header *hdr; | |
573 | struct device *dev = &mgp->pdev->dev; | |
574 | const size_t bytes = sizeof(struct mcp_gen_header); | |
575 | size_t hdr_offset; | |
576 | int status; | |
577 | ||
578 | /* find running firmware header */ | |
579 | hdr_offset = ntohl(__raw_readl(mgp->sram + MCP_HEADER_PTR_OFFSET)); | |
580 | ||
581 | if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > mgp->sram_size) { | |
582 | dev_err(dev, "Running firmware has bad header offset (%d)\n", | |
583 | (int)hdr_offset); | |
584 | return -EIO; | |
585 | } | |
586 | ||
587 | /* copy header of running firmware from SRAM to host memory to | |
588 | * validate firmware */ | |
589 | hdr = kmalloc(bytes, GFP_KERNEL); | |
590 | if (hdr == NULL) { | |
591 | dev_err(dev, "could not malloc firmware hdr\n"); | |
592 | return -ENOMEM; | |
593 | } | |
594 | memcpy_fromio(hdr, mgp->sram + hdr_offset, bytes); | |
595 | status = myri10ge_validate_firmware(mgp, hdr); | |
596 | kfree(hdr); | |
9dc6f0e7 BG |
597 | |
598 | /* check to see if adopted firmware has bug where adopting | |
599 | * it will cause broadcasts to be filtered unless the NIC | |
600 | * is kept in ALLMULTI mode */ | |
601 | if (mgp->fw_ver_major == 1 && mgp->fw_ver_minor == 4 && | |
602 | mgp->fw_ver_tiny >= 4 && mgp->fw_ver_tiny <= 11) { | |
603 | mgp->adopted_rx_filter_bug = 1; | |
604 | dev_warn(dev, "Adopting fw %d.%d.%d: " | |
605 | "working around rx filter bug\n", | |
606 | mgp->fw_ver_major, mgp->fw_ver_minor, | |
607 | mgp->fw_ver_tiny); | |
608 | } | |
0da34b6d BG |
609 | return status; |
610 | } | |
611 | ||
612 | static int myri10ge_load_firmware(struct myri10ge_priv *mgp) | |
613 | { | |
614 | char __iomem *submit; | |
40f6cff5 | 615 | __be32 buf[16]; |
0da34b6d BG |
616 | u32 dma_low, dma_high, size; |
617 | int status, i; | |
4f93fde0 | 618 | struct myri10ge_cmd cmd; |
0da34b6d | 619 | |
b10c0668 | 620 | size = 0; |
0da34b6d BG |
621 | status = myri10ge_load_hotplug_firmware(mgp, &size); |
622 | if (status) { | |
623 | dev_warn(&mgp->pdev->dev, "hotplug firmware loading failed\n"); | |
624 | ||
625 | /* Do not attempt to adopt firmware if there | |
626 | * was a bad crc */ | |
627 | if (status == -EIO) | |
628 | return status; | |
629 | ||
630 | status = myri10ge_adopt_running_firmware(mgp); | |
631 | if (status != 0) { | |
632 | dev_err(&mgp->pdev->dev, | |
633 | "failed to adopt running firmware\n"); | |
634 | return status; | |
635 | } | |
636 | dev_info(&mgp->pdev->dev, | |
637 | "Successfully adopted running firmware\n"); | |
638 | if (mgp->tx.boundary == 4096) { | |
639 | dev_warn(&mgp->pdev->dev, | |
640 | "Using firmware currently running on NIC" | |
641 | ". For optimal\n"); | |
642 | dev_warn(&mgp->pdev->dev, | |
643 | "performance consider loading optimized " | |
644 | "firmware\n"); | |
645 | dev_warn(&mgp->pdev->dev, "via hotplug\n"); | |
646 | } | |
647 | ||
648 | mgp->fw_name = "adopted"; | |
649 | mgp->tx.boundary = 2048; | |
650 | return status; | |
651 | } | |
652 | ||
653 | /* clear confirmation addr */ | |
654 | mgp->cmd->data = 0; | |
655 | mb(); | |
656 | ||
657 | /* send a reload command to the bootstrap MCP, and wait for the | |
658 | * response in the confirmation address. The firmware should | |
659 | * write a -1 there to indicate it is alive and well | |
660 | */ | |
661 | dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus); | |
662 | dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus); | |
663 | ||
664 | buf[0] = htonl(dma_high); /* confirm addr MSW */ | |
665 | buf[1] = htonl(dma_low); /* confirm addr LSW */ | |
40f6cff5 | 666 | buf[2] = MYRI10GE_NO_CONFIRM_DATA; /* confirm data */ |
0da34b6d BG |
667 | |
668 | /* FIX: All newest firmware should un-protect the bottom of | |
669 | * the sram before handoff. However, the very first interfaces | |
670 | * do not. Therefore the handoff copy must skip the first 8 bytes | |
671 | */ | |
672 | buf[3] = htonl(MYRI10GE_FW_OFFSET + 8); /* where the code starts */ | |
673 | buf[4] = htonl(size - 8); /* length of code */ | |
674 | buf[5] = htonl(8); /* where to copy to */ | |
675 | buf[6] = htonl(0); /* where to jump to */ | |
676 | ||
e700f9f4 | 677 | submit = mgp->sram + MXGEFW_BOOT_HANDOFF; |
0da34b6d BG |
678 | |
679 | myri10ge_pio_copy(submit, &buf, sizeof(buf)); | |
680 | mb(); | |
681 | msleep(1); | |
682 | mb(); | |
683 | i = 0; | |
684 | while (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 20) { | |
685 | msleep(1); | |
686 | i++; | |
687 | } | |
688 | if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA) { | |
689 | dev_err(&mgp->pdev->dev, "handoff failed\n"); | |
690 | return -ENXIO; | |
691 | } | |
692 | dev_info(&mgp->pdev->dev, "handoff confirmed\n"); | |
9a71db72 | 693 | myri10ge_dummy_rdma(mgp, 1); |
0da34b6d | 694 | |
4f93fde0 BG |
695 | /* probe for IPv6 TSO support */ |
696 | mgp->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO; | |
697 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_TSO6_HDR_SIZE, | |
698 | &cmd, 0); | |
699 | if (status == 0) { | |
700 | mgp->max_tso6 = cmd.data0; | |
701 | mgp->features |= NETIF_F_TSO6; | |
702 | } | |
0da34b6d BG |
703 | return 0; |
704 | } | |
705 | ||
706 | static int myri10ge_update_mac_address(struct myri10ge_priv *mgp, u8 * addr) | |
707 | { | |
708 | struct myri10ge_cmd cmd; | |
709 | int status; | |
710 | ||
711 | cmd.data0 = ((addr[0] << 24) | (addr[1] << 16) | |
712 | | (addr[2] << 8) | addr[3]); | |
713 | ||
714 | cmd.data1 = ((addr[4] << 8) | (addr[5])); | |
715 | ||
716 | status = myri10ge_send_cmd(mgp, MXGEFW_SET_MAC_ADDRESS, &cmd, 0); | |
717 | return status; | |
718 | } | |
719 | ||
720 | static int myri10ge_change_pause(struct myri10ge_priv *mgp, int pause) | |
721 | { | |
722 | struct myri10ge_cmd cmd; | |
723 | int status, ctl; | |
724 | ||
725 | ctl = pause ? MXGEFW_ENABLE_FLOW_CONTROL : MXGEFW_DISABLE_FLOW_CONTROL; | |
726 | status = myri10ge_send_cmd(mgp, ctl, &cmd, 0); | |
727 | ||
728 | if (status) { | |
729 | printk(KERN_ERR | |
730 | "myri10ge: %s: Failed to set flow control mode\n", | |
731 | mgp->dev->name); | |
732 | return status; | |
733 | } | |
734 | mgp->pause = pause; | |
735 | return 0; | |
736 | } | |
737 | ||
738 | static void | |
739 | myri10ge_change_promisc(struct myri10ge_priv *mgp, int promisc, int atomic) | |
740 | { | |
741 | struct myri10ge_cmd cmd; | |
742 | int status, ctl; | |
743 | ||
744 | ctl = promisc ? MXGEFW_ENABLE_PROMISC : MXGEFW_DISABLE_PROMISC; | |
745 | status = myri10ge_send_cmd(mgp, ctl, &cmd, atomic); | |
746 | if (status) | |
747 | printk(KERN_ERR "myri10ge: %s: Failed to set promisc mode\n", | |
748 | mgp->dev->name); | |
749 | } | |
750 | ||
0d6ac257 | 751 | static int myri10ge_dma_test(struct myri10ge_priv *mgp, int test_type) |
0da34b6d BG |
752 | { |
753 | struct myri10ge_cmd cmd; | |
754 | int status; | |
0da34b6d | 755 | u32 len; |
34fdccea BG |
756 | struct page *dmatest_page; |
757 | dma_addr_t dmatest_bus; | |
0d6ac257 BG |
758 | char *test = " "; |
759 | ||
760 | dmatest_page = alloc_page(GFP_KERNEL); | |
761 | if (!dmatest_page) | |
762 | return -ENOMEM; | |
763 | dmatest_bus = pci_map_page(mgp->pdev, dmatest_page, 0, PAGE_SIZE, | |
764 | DMA_BIDIRECTIONAL); | |
765 | ||
766 | /* Run a small DMA test. | |
767 | * The magic multipliers to the length tell the firmware | |
768 | * to do DMA read, write, or read+write tests. The | |
769 | * results are returned in cmd.data0. The upper 16 | |
770 | * bits or the return is the number of transfers completed. | |
771 | * The lower 16 bits is the time in 0.5us ticks that the | |
772 | * transfers took to complete. | |
773 | */ | |
774 | ||
775 | len = mgp->tx.boundary; | |
776 | ||
777 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus); | |
778 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus); | |
779 | cmd.data2 = len * 0x10000; | |
780 | status = myri10ge_send_cmd(mgp, test_type, &cmd, 0); | |
781 | if (status != 0) { | |
782 | test = "read"; | |
783 | goto abort; | |
784 | } | |
785 | mgp->read_dma = ((cmd.data0 >> 16) * len * 2) / (cmd.data0 & 0xffff); | |
786 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus); | |
787 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus); | |
788 | cmd.data2 = len * 0x1; | |
789 | status = myri10ge_send_cmd(mgp, test_type, &cmd, 0); | |
790 | if (status != 0) { | |
791 | test = "write"; | |
792 | goto abort; | |
793 | } | |
794 | mgp->write_dma = ((cmd.data0 >> 16) * len * 2) / (cmd.data0 & 0xffff); | |
795 | ||
796 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus); | |
797 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus); | |
798 | cmd.data2 = len * 0x10001; | |
799 | status = myri10ge_send_cmd(mgp, test_type, &cmd, 0); | |
800 | if (status != 0) { | |
801 | test = "read/write"; | |
802 | goto abort; | |
803 | } | |
804 | mgp->read_write_dma = ((cmd.data0 >> 16) * len * 2 * 2) / | |
805 | (cmd.data0 & 0xffff); | |
806 | ||
807 | abort: | |
808 | pci_unmap_page(mgp->pdev, dmatest_bus, PAGE_SIZE, DMA_BIDIRECTIONAL); | |
809 | put_page(dmatest_page); | |
810 | ||
811 | if (status != 0 && test_type != MXGEFW_CMD_UNALIGNED_TEST) | |
812 | dev_warn(&mgp->pdev->dev, "DMA %s benchmark failed: %d\n", | |
813 | test, status); | |
814 | ||
815 | return status; | |
816 | } | |
817 | ||
818 | static int myri10ge_reset(struct myri10ge_priv *mgp) | |
819 | { | |
820 | struct myri10ge_cmd cmd; | |
821 | int status; | |
822 | size_t bytes; | |
0da34b6d BG |
823 | |
824 | /* try to send a reset command to the card to see if it | |
825 | * is alive */ | |
826 | memset(&cmd, 0, sizeof(cmd)); | |
827 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_RESET, &cmd, 0); | |
828 | if (status != 0) { | |
829 | dev_err(&mgp->pdev->dev, "failed reset\n"); | |
830 | return -ENXIO; | |
831 | } | |
0d6ac257 BG |
832 | |
833 | (void)myri10ge_dma_test(mgp, MXGEFW_DMA_TEST); | |
0da34b6d BG |
834 | |
835 | /* Now exchange information about interrupts */ | |
836 | ||
837 | bytes = myri10ge_max_intr_slots * sizeof(*mgp->rx_done.entry); | |
838 | memset(mgp->rx_done.entry, 0, bytes); | |
839 | cmd.data0 = (u32) bytes; | |
840 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_SIZE, &cmd, 0); | |
841 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(mgp->rx_done.bus); | |
842 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(mgp->rx_done.bus); | |
843 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_DMA, &cmd, 0); | |
844 | ||
845 | status |= | |
846 | myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_ACK_OFFSET, &cmd, 0); | |
40f6cff5 | 847 | mgp->irq_claim = (__iomem __be32 *) (mgp->sram + cmd.data0); |
df30a740 BG |
848 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_DEASSERT_OFFSET, |
849 | &cmd, 0); | |
850 | mgp->irq_deassert = (__iomem __be32 *) (mgp->sram + cmd.data0); | |
0da34b6d | 851 | |
0da34b6d BG |
852 | status |= myri10ge_send_cmd |
853 | (mgp, MXGEFW_CMD_GET_INTR_COAL_DELAY_OFFSET, &cmd, 0); | |
40f6cff5 | 854 | mgp->intr_coal_delay_ptr = (__iomem __be32 *) (mgp->sram + cmd.data0); |
0da34b6d BG |
855 | if (status != 0) { |
856 | dev_err(&mgp->pdev->dev, "failed set interrupt parameters\n"); | |
857 | return status; | |
858 | } | |
40f6cff5 | 859 | put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr); |
0da34b6d | 860 | |
0da34b6d BG |
861 | memset(mgp->rx_done.entry, 0, bytes); |
862 | ||
863 | /* reset mcp/driver shared state back to 0 */ | |
864 | mgp->tx.req = 0; | |
865 | mgp->tx.done = 0; | |
866 | mgp->tx.pkt_start = 0; | |
867 | mgp->tx.pkt_done = 0; | |
868 | mgp->rx_big.cnt = 0; | |
869 | mgp->rx_small.cnt = 0; | |
870 | mgp->rx_done.idx = 0; | |
871 | mgp->rx_done.cnt = 0; | |
c58ac5ca | 872 | mgp->link_changes = 0; |
0da34b6d | 873 | status = myri10ge_update_mac_address(mgp, mgp->dev->dev_addr); |
0da34b6d | 874 | myri10ge_change_pause(mgp, mgp->pause); |
2f76216f | 875 | myri10ge_set_multicast_list(mgp->dev); |
0da34b6d BG |
876 | return status; |
877 | } | |
878 | ||
879 | static inline void | |
880 | myri10ge_submit_8rx(struct mcp_kreq_ether_recv __iomem * dst, | |
881 | struct mcp_kreq_ether_recv *src) | |
882 | { | |
40f6cff5 | 883 | __be32 low; |
0da34b6d BG |
884 | |
885 | low = src->addr_low; | |
40f6cff5 | 886 | src->addr_low = htonl(DMA_32BIT_MASK); |
e67bda55 BG |
887 | myri10ge_pio_copy(dst, src, 4 * sizeof(*src)); |
888 | mb(); | |
889 | myri10ge_pio_copy(dst + 4, src + 4, 4 * sizeof(*src)); | |
0da34b6d BG |
890 | mb(); |
891 | src->addr_low = low; | |
40f6cff5 | 892 | put_be32(low, &dst->addr_low); |
0da34b6d BG |
893 | mb(); |
894 | } | |
895 | ||
40f6cff5 | 896 | static inline void myri10ge_vlan_ip_csum(struct sk_buff *skb, __wsum hw_csum) |
0da34b6d BG |
897 | { |
898 | struct vlan_hdr *vh = (struct vlan_hdr *)(skb->data); | |
899 | ||
40f6cff5 | 900 | if ((skb->protocol == htons(ETH_P_8021Q)) && |
0da34b6d BG |
901 | (vh->h_vlan_encapsulated_proto == htons(ETH_P_IP) || |
902 | vh->h_vlan_encapsulated_proto == htons(ETH_P_IPV6))) { | |
903 | skb->csum = hw_csum; | |
84fa7933 | 904 | skb->ip_summed = CHECKSUM_COMPLETE; |
0da34b6d BG |
905 | } |
906 | } | |
907 | ||
dd50f336 BG |
908 | static inline void |
909 | myri10ge_rx_skb_build(struct sk_buff *skb, u8 * va, | |
910 | struct skb_frag_struct *rx_frags, int len, int hlen) | |
911 | { | |
912 | struct skb_frag_struct *skb_frags; | |
913 | ||
914 | skb->len = skb->data_len = len; | |
915 | skb->truesize = len + sizeof(struct sk_buff); | |
916 | /* attach the page(s) */ | |
917 | ||
918 | skb_frags = skb_shinfo(skb)->frags; | |
919 | while (len > 0) { | |
920 | memcpy(skb_frags, rx_frags, sizeof(*skb_frags)); | |
921 | len -= rx_frags->size; | |
922 | skb_frags++; | |
923 | rx_frags++; | |
924 | skb_shinfo(skb)->nr_frags++; | |
925 | } | |
926 | ||
927 | /* pskb_may_pull is not available in irq context, but | |
928 | * skb_pull() (for ether_pad and eth_type_trans()) requires | |
929 | * the beginning of the packet in skb_headlen(), move it | |
930 | * manually */ | |
27d7ff46 | 931 | skb_copy_to_linear_data(skb, va, hlen); |
dd50f336 BG |
932 | skb_shinfo(skb)->frags[0].page_offset += hlen; |
933 | skb_shinfo(skb)->frags[0].size -= hlen; | |
934 | skb->data_len -= hlen; | |
935 | skb->tail += hlen; | |
936 | skb_pull(skb, MXGEFW_PAD); | |
937 | } | |
938 | ||
939 | static void | |
940 | myri10ge_alloc_rx_pages(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx, | |
941 | int bytes, int watchdog) | |
942 | { | |
943 | struct page *page; | |
944 | int idx; | |
945 | ||
946 | if (unlikely(rx->watchdog_needed && !watchdog)) | |
947 | return; | |
948 | ||
949 | /* try to refill entire ring */ | |
950 | while (rx->fill_cnt != (rx->cnt + rx->mask + 1)) { | |
951 | idx = rx->fill_cnt & rx->mask; | |
ae8509b1 | 952 | if (rx->page_offset + bytes <= MYRI10GE_ALLOC_SIZE) { |
dd50f336 BG |
953 | /* we can use part of previous page */ |
954 | get_page(rx->page); | |
955 | } else { | |
956 | /* we need a new page */ | |
957 | page = | |
958 | alloc_pages(GFP_ATOMIC | __GFP_COMP, | |
959 | MYRI10GE_ALLOC_ORDER); | |
960 | if (unlikely(page == NULL)) { | |
961 | if (rx->fill_cnt - rx->cnt < 16) | |
962 | rx->watchdog_needed = 1; | |
963 | return; | |
964 | } | |
965 | rx->page = page; | |
966 | rx->page_offset = 0; | |
967 | rx->bus = pci_map_page(mgp->pdev, page, 0, | |
968 | MYRI10GE_ALLOC_SIZE, | |
969 | PCI_DMA_FROMDEVICE); | |
970 | } | |
971 | rx->info[idx].page = rx->page; | |
972 | rx->info[idx].page_offset = rx->page_offset; | |
973 | /* note that this is the address of the start of the | |
974 | * page */ | |
975 | pci_unmap_addr_set(&rx->info[idx], bus, rx->bus); | |
976 | rx->shadow[idx].addr_low = | |
977 | htonl(MYRI10GE_LOWPART_TO_U32(rx->bus) + rx->page_offset); | |
978 | rx->shadow[idx].addr_high = | |
979 | htonl(MYRI10GE_HIGHPART_TO_U32(rx->bus)); | |
980 | ||
981 | /* start next packet on a cacheline boundary */ | |
982 | rx->page_offset += SKB_DATA_ALIGN(bytes); | |
ae8509b1 BG |
983 | |
984 | #if MYRI10GE_ALLOC_SIZE > 4096 | |
985 | /* don't cross a 4KB boundary */ | |
986 | if ((rx->page_offset >> 12) != | |
987 | ((rx->page_offset + bytes - 1) >> 12)) | |
988 | rx->page_offset = (rx->page_offset + 4096) & ~4095; | |
989 | #endif | |
dd50f336 BG |
990 | rx->fill_cnt++; |
991 | ||
992 | /* copy 8 descriptors to the firmware at a time */ | |
993 | if ((idx & 7) == 7) { | |
994 | if (rx->wc_fifo == NULL) | |
995 | myri10ge_submit_8rx(&rx->lanai[idx - 7], | |
996 | &rx->shadow[idx - 7]); | |
997 | else { | |
998 | mb(); | |
999 | myri10ge_pio_copy(rx->wc_fifo, | |
1000 | &rx->shadow[idx - 7], 64); | |
1001 | } | |
1002 | } | |
1003 | } | |
1004 | } | |
1005 | ||
1006 | static inline void | |
1007 | myri10ge_unmap_rx_page(struct pci_dev *pdev, | |
1008 | struct myri10ge_rx_buffer_state *info, int bytes) | |
1009 | { | |
1010 | /* unmap the recvd page if we're the only or last user of it */ | |
1011 | if (bytes >= MYRI10GE_ALLOC_SIZE / 2 || | |
1012 | (info->page_offset + 2 * bytes) > MYRI10GE_ALLOC_SIZE) { | |
1013 | pci_unmap_page(pdev, (pci_unmap_addr(info, bus) | |
1014 | & ~(MYRI10GE_ALLOC_SIZE - 1)), | |
1015 | MYRI10GE_ALLOC_SIZE, PCI_DMA_FROMDEVICE); | |
1016 | } | |
1017 | } | |
1018 | ||
1019 | #define MYRI10GE_HLEN 64 /* The number of bytes to copy from a | |
1020 | * page into an skb */ | |
1021 | ||
1022 | static inline int | |
52ea6fb3 BG |
1023 | myri10ge_rx_done(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx, |
1024 | int bytes, int len, __wsum csum) | |
dd50f336 BG |
1025 | { |
1026 | struct sk_buff *skb; | |
1027 | struct skb_frag_struct rx_frags[MYRI10GE_MAX_FRAGS_PER_FRAME]; | |
1028 | int i, idx, hlen, remainder; | |
1029 | struct pci_dev *pdev = mgp->pdev; | |
1030 | struct net_device *dev = mgp->dev; | |
1031 | u8 *va; | |
1032 | ||
1033 | len += MXGEFW_PAD; | |
1034 | idx = rx->cnt & rx->mask; | |
1035 | va = page_address(rx->info[idx].page) + rx->info[idx].page_offset; | |
1036 | prefetch(va); | |
1037 | /* Fill skb_frag_struct(s) with data from our receive */ | |
1038 | for (i = 0, remainder = len; remainder > 0; i++) { | |
1039 | myri10ge_unmap_rx_page(pdev, &rx->info[idx], bytes); | |
1040 | rx_frags[i].page = rx->info[idx].page; | |
1041 | rx_frags[i].page_offset = rx->info[idx].page_offset; | |
1042 | if (remainder < MYRI10GE_ALLOC_SIZE) | |
1043 | rx_frags[i].size = remainder; | |
1044 | else | |
1045 | rx_frags[i].size = MYRI10GE_ALLOC_SIZE; | |
1046 | rx->cnt++; | |
1047 | idx = rx->cnt & rx->mask; | |
1048 | remainder -= MYRI10GE_ALLOC_SIZE; | |
1049 | } | |
1050 | ||
1e6e9342 AG |
1051 | if (mgp->csum_flag && myri10ge_lro) { |
1052 | rx_frags[0].page_offset += MXGEFW_PAD; | |
1053 | rx_frags[0].size -= MXGEFW_PAD; | |
1054 | len -= MXGEFW_PAD; | |
1055 | lro_receive_frags(&mgp->rx_done.lro_mgr, rx_frags, | |
1056 | len, len, (void *)(unsigned long)csum, csum); | |
1057 | return 1; | |
1058 | } | |
1059 | ||
dd50f336 BG |
1060 | hlen = MYRI10GE_HLEN > len ? len : MYRI10GE_HLEN; |
1061 | ||
e636b2ea BG |
1062 | /* allocate an skb to attach the page(s) to. This is done |
1063 | * after trying LRO, so as to avoid skb allocation overheads */ | |
dd50f336 BG |
1064 | |
1065 | skb = netdev_alloc_skb(dev, MYRI10GE_HLEN + 16); | |
1066 | if (unlikely(skb == NULL)) { | |
1067 | mgp->stats.rx_dropped++; | |
1068 | do { | |
1069 | i--; | |
1070 | put_page(rx_frags[i].page); | |
1071 | } while (i != 0); | |
1072 | return 0; | |
1073 | } | |
1074 | ||
1075 | /* Attach the pages to the skb, and trim off any padding */ | |
1076 | myri10ge_rx_skb_build(skb, va, rx_frags, len, hlen); | |
1077 | if (skb_shinfo(skb)->frags[0].size <= 0) { | |
1078 | put_page(skb_shinfo(skb)->frags[0].page); | |
1079 | skb_shinfo(skb)->nr_frags = 0; | |
1080 | } | |
1081 | skb->protocol = eth_type_trans(skb, dev); | |
dd50f336 BG |
1082 | |
1083 | if (mgp->csum_flag) { | |
1084 | if ((skb->protocol == htons(ETH_P_IP)) || | |
1085 | (skb->protocol == htons(ETH_P_IPV6))) { | |
1086 | skb->csum = csum; | |
1087 | skb->ip_summed = CHECKSUM_COMPLETE; | |
1088 | } else | |
1089 | myri10ge_vlan_ip_csum(skb, csum); | |
1090 | } | |
1091 | netif_receive_skb(skb); | |
1092 | dev->last_rx = jiffies; | |
1093 | return 1; | |
1094 | } | |
1095 | ||
0da34b6d BG |
1096 | static inline void myri10ge_tx_done(struct myri10ge_priv *mgp, int mcp_index) |
1097 | { | |
1098 | struct pci_dev *pdev = mgp->pdev; | |
1099 | struct myri10ge_tx_buf *tx = &mgp->tx; | |
1100 | struct sk_buff *skb; | |
1101 | int idx, len; | |
0da34b6d BG |
1102 | |
1103 | while (tx->pkt_done != mcp_index) { | |
1104 | idx = tx->done & tx->mask; | |
1105 | skb = tx->info[idx].skb; | |
1106 | ||
1107 | /* Mark as free */ | |
1108 | tx->info[idx].skb = NULL; | |
1109 | if (tx->info[idx].last) { | |
1110 | tx->pkt_done++; | |
1111 | tx->info[idx].last = 0; | |
1112 | } | |
1113 | tx->done++; | |
1114 | len = pci_unmap_len(&tx->info[idx], len); | |
1115 | pci_unmap_len_set(&tx->info[idx], len, 0); | |
1116 | if (skb) { | |
1117 | mgp->stats.tx_bytes += skb->len; | |
1118 | mgp->stats.tx_packets++; | |
1119 | dev_kfree_skb_irq(skb); | |
1120 | if (len) | |
1121 | pci_unmap_single(pdev, | |
1122 | pci_unmap_addr(&tx->info[idx], | |
1123 | bus), len, | |
1124 | PCI_DMA_TODEVICE); | |
1125 | } else { | |
1126 | if (len) | |
1127 | pci_unmap_page(pdev, | |
1128 | pci_unmap_addr(&tx->info[idx], | |
1129 | bus), len, | |
1130 | PCI_DMA_TODEVICE); | |
1131 | } | |
0da34b6d BG |
1132 | } |
1133 | /* start the queue if we've stopped it */ | |
1134 | if (netif_queue_stopped(mgp->dev) | |
1135 | && tx->req - tx->done < (tx->mask >> 1)) { | |
1136 | mgp->wake_queue++; | |
1137 | netif_wake_queue(mgp->dev); | |
1138 | } | |
1139 | } | |
1140 | ||
bea3348e | 1141 | static inline int myri10ge_clean_rx_done(struct myri10ge_priv *mgp, int budget) |
0da34b6d BG |
1142 | { |
1143 | struct myri10ge_rx_done *rx_done = &mgp->rx_done; | |
1144 | unsigned long rx_bytes = 0; | |
1145 | unsigned long rx_packets = 0; | |
1146 | unsigned long rx_ok; | |
1147 | ||
1148 | int idx = rx_done->idx; | |
1149 | int cnt = rx_done->cnt; | |
bea3348e | 1150 | int work_done = 0; |
0da34b6d | 1151 | u16 length; |
40f6cff5 | 1152 | __wsum checksum; |
0da34b6d | 1153 | |
c956a240 | 1154 | while (rx_done->entry[idx].length != 0 && work_done < budget) { |
0da34b6d BG |
1155 | length = ntohs(rx_done->entry[idx].length); |
1156 | rx_done->entry[idx].length = 0; | |
40f6cff5 | 1157 | checksum = csum_unfold(rx_done->entry[idx].checksum); |
0da34b6d | 1158 | if (length <= mgp->small_bytes) |
52ea6fb3 BG |
1159 | rx_ok = myri10ge_rx_done(mgp, &mgp->rx_small, |
1160 | mgp->small_bytes, | |
1161 | length, checksum); | |
0da34b6d | 1162 | else |
52ea6fb3 BG |
1163 | rx_ok = myri10ge_rx_done(mgp, &mgp->rx_big, |
1164 | mgp->big_bytes, | |
1165 | length, checksum); | |
0da34b6d BG |
1166 | rx_packets += rx_ok; |
1167 | rx_bytes += rx_ok * (unsigned long)length; | |
1168 | cnt++; | |
1169 | idx = cnt & (myri10ge_max_intr_slots - 1); | |
c956a240 | 1170 | work_done++; |
0da34b6d BG |
1171 | } |
1172 | rx_done->idx = idx; | |
1173 | rx_done->cnt = cnt; | |
1174 | mgp->stats.rx_packets += rx_packets; | |
1175 | mgp->stats.rx_bytes += rx_bytes; | |
c7dab99b | 1176 | |
1e6e9342 AG |
1177 | if (myri10ge_lro) |
1178 | lro_flush_all(&rx_done->lro_mgr); | |
1179 | ||
c7dab99b BG |
1180 | /* restock receive rings if needed */ |
1181 | if (mgp->rx_small.fill_cnt - mgp->rx_small.cnt < myri10ge_fill_thresh) | |
1182 | myri10ge_alloc_rx_pages(mgp, &mgp->rx_small, | |
1183 | mgp->small_bytes + MXGEFW_PAD, 0); | |
1184 | if (mgp->rx_big.fill_cnt - mgp->rx_big.cnt < myri10ge_fill_thresh) | |
1185 | myri10ge_alloc_rx_pages(mgp, &mgp->rx_big, mgp->big_bytes, 0); | |
1186 | ||
bea3348e | 1187 | return work_done; |
0da34b6d BG |
1188 | } |
1189 | ||
1190 | static inline void myri10ge_check_statblock(struct myri10ge_priv *mgp) | |
1191 | { | |
1192 | struct mcp_irq_data *stats = mgp->fw_stats; | |
1193 | ||
1194 | if (unlikely(stats->stats_updated)) { | |
798a95db BG |
1195 | unsigned link_up = ntohl(stats->link_up); |
1196 | if (mgp->link_state != link_up) { | |
1197 | mgp->link_state = link_up; | |
1198 | ||
1199 | if (mgp->link_state == MXGEFW_LINK_UP) { | |
c58ac5ca BG |
1200 | if (netif_msg_link(mgp)) |
1201 | printk(KERN_INFO | |
1202 | "myri10ge: %s: link up\n", | |
1203 | mgp->dev->name); | |
0da34b6d | 1204 | netif_carrier_on(mgp->dev); |
c58ac5ca | 1205 | mgp->link_changes++; |
0da34b6d | 1206 | } else { |
c58ac5ca BG |
1207 | if (netif_msg_link(mgp)) |
1208 | printk(KERN_INFO | |
798a95db BG |
1209 | "myri10ge: %s: link %s\n", |
1210 | mgp->dev->name, | |
1211 | (link_up == MXGEFW_LINK_MYRINET ? | |
1212 | "mismatch (Myrinet detected)" : | |
1213 | "down")); | |
0da34b6d | 1214 | netif_carrier_off(mgp->dev); |
c58ac5ca | 1215 | mgp->link_changes++; |
0da34b6d BG |
1216 | } |
1217 | } | |
1218 | if (mgp->rdma_tags_available != | |
1219 | ntohl(mgp->fw_stats->rdma_tags_available)) { | |
1220 | mgp->rdma_tags_available = | |
1221 | ntohl(mgp->fw_stats->rdma_tags_available); | |
1222 | printk(KERN_WARNING "myri10ge: %s: RDMA timed out! " | |
1223 | "%d tags left\n", mgp->dev->name, | |
1224 | mgp->rdma_tags_available); | |
1225 | } | |
1226 | mgp->down_cnt += stats->link_down; | |
1227 | if (stats->link_down) | |
1228 | wake_up(&mgp->down_wq); | |
1229 | } | |
1230 | } | |
1231 | ||
bea3348e | 1232 | static int myri10ge_poll(struct napi_struct *napi, int budget) |
0da34b6d | 1233 | { |
e636b2ea BG |
1234 | struct myri10ge_priv *mgp = |
1235 | container_of(napi, struct myri10ge_priv, napi); | |
bea3348e | 1236 | struct net_device *netdev = mgp->dev; |
bea3348e | 1237 | int work_done; |
0da34b6d BG |
1238 | |
1239 | /* process as many rx events as NAPI will allow */ | |
bea3348e | 1240 | work_done = myri10ge_clean_rx_done(mgp, budget); |
0da34b6d | 1241 | |
c956a240 | 1242 | if (work_done < budget || !netif_running(netdev)) { |
bea3348e | 1243 | netif_rx_complete(netdev, napi); |
40f6cff5 | 1244 | put_be32(htonl(3), mgp->irq_claim); |
0da34b6d | 1245 | } |
bea3348e | 1246 | return work_done; |
0da34b6d BG |
1247 | } |
1248 | ||
7d12e780 | 1249 | static irqreturn_t myri10ge_intr(int irq, void *arg) |
0da34b6d BG |
1250 | { |
1251 | struct myri10ge_priv *mgp = arg; | |
1252 | struct mcp_irq_data *stats = mgp->fw_stats; | |
1253 | struct myri10ge_tx_buf *tx = &mgp->tx; | |
1254 | u32 send_done_count; | |
1255 | int i; | |
1256 | ||
1257 | /* make sure it is our IRQ, and that the DMA has finished */ | |
1258 | if (unlikely(!stats->valid)) | |
1259 | return (IRQ_NONE); | |
1260 | ||
1261 | /* low bit indicates receives are present, so schedule | |
1262 | * napi poll handler */ | |
1263 | if (stats->valid & 1) | |
bea3348e | 1264 | netif_rx_schedule(mgp->dev, &mgp->napi); |
0da34b6d BG |
1265 | |
1266 | if (!mgp->msi_enabled) { | |
40f6cff5 | 1267 | put_be32(0, mgp->irq_deassert); |
0da34b6d BG |
1268 | if (!myri10ge_deassert_wait) |
1269 | stats->valid = 0; | |
1270 | mb(); | |
1271 | } else | |
1272 | stats->valid = 0; | |
1273 | ||
1274 | /* Wait for IRQ line to go low, if using INTx */ | |
1275 | i = 0; | |
1276 | while (1) { | |
1277 | i++; | |
1278 | /* check for transmit completes and receives */ | |
1279 | send_done_count = ntohl(stats->send_done_count); | |
1280 | if (send_done_count != tx->pkt_done) | |
1281 | myri10ge_tx_done(mgp, (int)send_done_count); | |
1282 | if (unlikely(i > myri10ge_max_irq_loops)) { | |
1283 | printk(KERN_WARNING "myri10ge: %s: irq stuck?\n", | |
1284 | mgp->dev->name); | |
1285 | stats->valid = 0; | |
1286 | schedule_work(&mgp->watchdog_work); | |
1287 | } | |
1288 | if (likely(stats->valid == 0)) | |
1289 | break; | |
1290 | cpu_relax(); | |
1291 | barrier(); | |
1292 | } | |
1293 | ||
1294 | myri10ge_check_statblock(mgp); | |
1295 | ||
40f6cff5 | 1296 | put_be32(htonl(3), mgp->irq_claim + 1); |
0da34b6d BG |
1297 | return (IRQ_HANDLED); |
1298 | } | |
1299 | ||
1300 | static int | |
1301 | myri10ge_get_settings(struct net_device *netdev, struct ethtool_cmd *cmd) | |
1302 | { | |
1303 | cmd->autoneg = AUTONEG_DISABLE; | |
1304 | cmd->speed = SPEED_10000; | |
1305 | cmd->duplex = DUPLEX_FULL; | |
1306 | return 0; | |
1307 | } | |
1308 | ||
1309 | static void | |
1310 | myri10ge_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) | |
1311 | { | |
1312 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1313 | ||
1314 | strlcpy(info->driver, "myri10ge", sizeof(info->driver)); | |
1315 | strlcpy(info->version, MYRI10GE_VERSION_STR, sizeof(info->version)); | |
1316 | strlcpy(info->fw_version, mgp->fw_version, sizeof(info->fw_version)); | |
1317 | strlcpy(info->bus_info, pci_name(mgp->pdev), sizeof(info->bus_info)); | |
1318 | } | |
1319 | ||
1320 | static int | |
1321 | myri10ge_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal) | |
1322 | { | |
1323 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1324 | coal->rx_coalesce_usecs = mgp->intr_coal_delay; | |
1325 | return 0; | |
1326 | } | |
1327 | ||
1328 | static int | |
1329 | myri10ge_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal) | |
1330 | { | |
1331 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1332 | ||
1333 | mgp->intr_coal_delay = coal->rx_coalesce_usecs; | |
40f6cff5 | 1334 | put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr); |
0da34b6d BG |
1335 | return 0; |
1336 | } | |
1337 | ||
1338 | static void | |
1339 | myri10ge_get_pauseparam(struct net_device *netdev, | |
1340 | struct ethtool_pauseparam *pause) | |
1341 | { | |
1342 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1343 | ||
1344 | pause->autoneg = 0; | |
1345 | pause->rx_pause = mgp->pause; | |
1346 | pause->tx_pause = mgp->pause; | |
1347 | } | |
1348 | ||
1349 | static int | |
1350 | myri10ge_set_pauseparam(struct net_device *netdev, | |
1351 | struct ethtool_pauseparam *pause) | |
1352 | { | |
1353 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1354 | ||
1355 | if (pause->tx_pause != mgp->pause) | |
1356 | return myri10ge_change_pause(mgp, pause->tx_pause); | |
1357 | if (pause->rx_pause != mgp->pause) | |
1358 | return myri10ge_change_pause(mgp, pause->tx_pause); | |
1359 | if (pause->autoneg != 0) | |
1360 | return -EINVAL; | |
1361 | return 0; | |
1362 | } | |
1363 | ||
1364 | static void | |
1365 | myri10ge_get_ringparam(struct net_device *netdev, | |
1366 | struct ethtool_ringparam *ring) | |
1367 | { | |
1368 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1369 | ||
1370 | ring->rx_mini_max_pending = mgp->rx_small.mask + 1; | |
1371 | ring->rx_max_pending = mgp->rx_big.mask + 1; | |
1372 | ring->rx_jumbo_max_pending = 0; | |
1373 | ring->tx_max_pending = mgp->rx_small.mask + 1; | |
1374 | ring->rx_mini_pending = ring->rx_mini_max_pending; | |
1375 | ring->rx_pending = ring->rx_max_pending; | |
1376 | ring->rx_jumbo_pending = ring->rx_jumbo_max_pending; | |
1377 | ring->tx_pending = ring->tx_max_pending; | |
1378 | } | |
1379 | ||
1380 | static u32 myri10ge_get_rx_csum(struct net_device *netdev) | |
1381 | { | |
1382 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1383 | if (mgp->csum_flag) | |
1384 | return 1; | |
1385 | else | |
1386 | return 0; | |
1387 | } | |
1388 | ||
1389 | static int myri10ge_set_rx_csum(struct net_device *netdev, u32 csum_enabled) | |
1390 | { | |
1391 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1392 | if (csum_enabled) | |
1393 | mgp->csum_flag = MXGEFW_FLAGS_CKSUM; | |
1394 | else | |
1395 | mgp->csum_flag = 0; | |
1396 | return 0; | |
1397 | } | |
1398 | ||
4f93fde0 BG |
1399 | static int myri10ge_set_tso(struct net_device *netdev, u32 tso_enabled) |
1400 | { | |
1401 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1402 | unsigned long flags = mgp->features & (NETIF_F_TSO6 | NETIF_F_TSO); | |
1403 | ||
1404 | if (tso_enabled) | |
1405 | netdev->features |= flags; | |
1406 | else | |
1407 | netdev->features &= ~flags; | |
1408 | return 0; | |
1409 | } | |
1410 | ||
0da34b6d BG |
1411 | static const char myri10ge_gstrings_stats[][ETH_GSTRING_LEN] = { |
1412 | "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors", | |
1413 | "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions", | |
1414 | "rx_length_errors", "rx_over_errors", "rx_crc_errors", | |
1415 | "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors", | |
1416 | "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors", | |
1417 | "tx_heartbeat_errors", "tx_window_errors", | |
1418 | /* device-specific stats */ | |
2c1a1088 | 1419 | "tx_boundary", "WC", "irq", "MSI", |
0da34b6d BG |
1420 | "read_dma_bw_MBs", "write_dma_bw_MBs", "read_write_dma_bw_MBs", |
1421 | "serial_number", "tx_pkt_start", "tx_pkt_done", | |
1422 | "tx_req", "tx_done", "rx_small_cnt", "rx_big_cnt", | |
1423 | "wake_queue", "stop_queue", "watchdog_resets", "tx_linearized", | |
c58ac5ca | 1424 | "link_changes", "link_up", "dropped_link_overflow", |
cee505db BG |
1425 | "dropped_link_error_or_filtered", |
1426 | "dropped_pause", "dropped_bad_phy", "dropped_bad_crc32", | |
1427 | "dropped_unicast_filtered", "dropped_multicast_filtered", | |
0da34b6d | 1428 | "dropped_runt", "dropped_overrun", "dropped_no_small_buffer", |
1e6e9342 AG |
1429 | "dropped_no_big_buffer", "LRO aggregated", "LRO flushed", |
1430 | "LRO avg aggr", "LRO no_desc" | |
0da34b6d BG |
1431 | }; |
1432 | ||
1433 | #define MYRI10GE_NET_STATS_LEN 21 | |
1434 | #define MYRI10GE_STATS_LEN sizeof(myri10ge_gstrings_stats) / ETH_GSTRING_LEN | |
1435 | ||
1436 | static void | |
1437 | myri10ge_get_strings(struct net_device *netdev, u32 stringset, u8 * data) | |
1438 | { | |
1439 | switch (stringset) { | |
1440 | case ETH_SS_STATS: | |
1441 | memcpy(data, *myri10ge_gstrings_stats, | |
1442 | sizeof(myri10ge_gstrings_stats)); | |
1443 | break; | |
1444 | } | |
1445 | } | |
1446 | ||
b9f2c044 | 1447 | static int myri10ge_get_sset_count(struct net_device *netdev, int sset) |
0da34b6d | 1448 | { |
b9f2c044 JG |
1449 | switch (sset) { |
1450 | case ETH_SS_STATS: | |
1451 | return MYRI10GE_STATS_LEN; | |
1452 | default: | |
1453 | return -EOPNOTSUPP; | |
1454 | } | |
0da34b6d BG |
1455 | } |
1456 | ||
1457 | static void | |
1458 | myri10ge_get_ethtool_stats(struct net_device *netdev, | |
1459 | struct ethtool_stats *stats, u64 * data) | |
1460 | { | |
1461 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1462 | int i; | |
1463 | ||
1464 | for (i = 0; i < MYRI10GE_NET_STATS_LEN; i++) | |
1465 | data[i] = ((unsigned long *)&mgp->stats)[i]; | |
1466 | ||
2c1a1088 | 1467 | data[i++] = (unsigned int)mgp->tx.boundary; |
276e26c3 | 1468 | data[i++] = (unsigned int)mgp->wc_enabled; |
2c1a1088 BG |
1469 | data[i++] = (unsigned int)mgp->pdev->irq; |
1470 | data[i++] = (unsigned int)mgp->msi_enabled; | |
0da34b6d BG |
1471 | data[i++] = (unsigned int)mgp->read_dma; |
1472 | data[i++] = (unsigned int)mgp->write_dma; | |
1473 | data[i++] = (unsigned int)mgp->read_write_dma; | |
1474 | data[i++] = (unsigned int)mgp->serial_number; | |
1475 | data[i++] = (unsigned int)mgp->tx.pkt_start; | |
1476 | data[i++] = (unsigned int)mgp->tx.pkt_done; | |
1477 | data[i++] = (unsigned int)mgp->tx.req; | |
1478 | data[i++] = (unsigned int)mgp->tx.done; | |
1479 | data[i++] = (unsigned int)mgp->rx_small.cnt; | |
1480 | data[i++] = (unsigned int)mgp->rx_big.cnt; | |
1481 | data[i++] = (unsigned int)mgp->wake_queue; | |
1482 | data[i++] = (unsigned int)mgp->stop_queue; | |
1483 | data[i++] = (unsigned int)mgp->watchdog_resets; | |
1484 | data[i++] = (unsigned int)mgp->tx_linearized; | |
c58ac5ca | 1485 | data[i++] = (unsigned int)mgp->link_changes; |
0da34b6d BG |
1486 | data[i++] = (unsigned int)ntohl(mgp->fw_stats->link_up); |
1487 | data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_link_overflow); | |
1488 | data[i++] = | |
1489 | (unsigned int)ntohl(mgp->fw_stats->dropped_link_error_or_filtered); | |
cee505db BG |
1490 | data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_pause); |
1491 | data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_bad_phy); | |
1492 | data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_bad_crc32); | |
1493 | data[i++] = | |
1494 | (unsigned int)ntohl(mgp->fw_stats->dropped_unicast_filtered); | |
85a7ea1b BG |
1495 | data[i++] = |
1496 | (unsigned int)ntohl(mgp->fw_stats->dropped_multicast_filtered); | |
0da34b6d BG |
1497 | data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_runt); |
1498 | data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_overrun); | |
1499 | data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_no_small_buffer); | |
1500 | data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_no_big_buffer); | |
1e6e9342 AG |
1501 | data[i++] = mgp->rx_done.lro_mgr.stats.aggregated; |
1502 | data[i++] = mgp->rx_done.lro_mgr.stats.flushed; | |
1503 | if (mgp->rx_done.lro_mgr.stats.flushed) | |
1504 | data[i++] = mgp->rx_done.lro_mgr.stats.aggregated / | |
1505 | mgp->rx_done.lro_mgr.stats.flushed; | |
1506 | else | |
1507 | data[i++] = 0; | |
1508 | data[i++] = mgp->rx_done.lro_mgr.stats.no_desc; | |
0da34b6d BG |
1509 | } |
1510 | ||
c58ac5ca BG |
1511 | static void myri10ge_set_msglevel(struct net_device *netdev, u32 value) |
1512 | { | |
1513 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1514 | mgp->msg_enable = value; | |
1515 | } | |
1516 | ||
1517 | static u32 myri10ge_get_msglevel(struct net_device *netdev) | |
1518 | { | |
1519 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1520 | return mgp->msg_enable; | |
1521 | } | |
1522 | ||
7282d491 | 1523 | static const struct ethtool_ops myri10ge_ethtool_ops = { |
0da34b6d BG |
1524 | .get_settings = myri10ge_get_settings, |
1525 | .get_drvinfo = myri10ge_get_drvinfo, | |
1526 | .get_coalesce = myri10ge_get_coalesce, | |
1527 | .set_coalesce = myri10ge_set_coalesce, | |
1528 | .get_pauseparam = myri10ge_get_pauseparam, | |
1529 | .set_pauseparam = myri10ge_set_pauseparam, | |
1530 | .get_ringparam = myri10ge_get_ringparam, | |
1531 | .get_rx_csum = myri10ge_get_rx_csum, | |
1532 | .set_rx_csum = myri10ge_set_rx_csum, | |
b10c0668 | 1533 | .set_tx_csum = ethtool_op_set_tx_hw_csum, |
0da34b6d | 1534 | .set_sg = ethtool_op_set_sg, |
4f93fde0 | 1535 | .set_tso = myri10ge_set_tso, |
6ffdd071 | 1536 | .get_link = ethtool_op_get_link, |
0da34b6d | 1537 | .get_strings = myri10ge_get_strings, |
b9f2c044 | 1538 | .get_sset_count = myri10ge_get_sset_count, |
c58ac5ca BG |
1539 | .get_ethtool_stats = myri10ge_get_ethtool_stats, |
1540 | .set_msglevel = myri10ge_set_msglevel, | |
1541 | .get_msglevel = myri10ge_get_msglevel | |
0da34b6d BG |
1542 | }; |
1543 | ||
1544 | static int myri10ge_allocate_rings(struct net_device *dev) | |
1545 | { | |
1546 | struct myri10ge_priv *mgp; | |
1547 | struct myri10ge_cmd cmd; | |
1548 | int tx_ring_size, rx_ring_size; | |
1549 | int tx_ring_entries, rx_ring_entries; | |
1550 | int i, status; | |
1551 | size_t bytes; | |
1552 | ||
1553 | mgp = netdev_priv(dev); | |
1554 | ||
1555 | /* get ring sizes */ | |
1556 | ||
1557 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_RING_SIZE, &cmd, 0); | |
1558 | tx_ring_size = cmd.data0; | |
1559 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_RX_RING_SIZE, &cmd, 0); | |
355c7265 BG |
1560 | if (status != 0) |
1561 | return status; | |
0da34b6d BG |
1562 | rx_ring_size = cmd.data0; |
1563 | ||
1564 | tx_ring_entries = tx_ring_size / sizeof(struct mcp_kreq_ether_send); | |
1565 | rx_ring_entries = rx_ring_size / sizeof(struct mcp_dma_addr); | |
1566 | mgp->tx.mask = tx_ring_entries - 1; | |
1567 | mgp->rx_small.mask = mgp->rx_big.mask = rx_ring_entries - 1; | |
1568 | ||
355c7265 BG |
1569 | status = -ENOMEM; |
1570 | ||
0da34b6d BG |
1571 | /* allocate the host shadow rings */ |
1572 | ||
1573 | bytes = 8 + (MYRI10GE_MAX_SEND_DESC_TSO + 4) | |
1574 | * sizeof(*mgp->tx.req_list); | |
1575 | mgp->tx.req_bytes = kzalloc(bytes, GFP_KERNEL); | |
1576 | if (mgp->tx.req_bytes == NULL) | |
1577 | goto abort_with_nothing; | |
1578 | ||
1579 | /* ensure req_list entries are aligned to 8 bytes */ | |
1580 | mgp->tx.req_list = (struct mcp_kreq_ether_send *) | |
1581 | ALIGN((unsigned long)mgp->tx.req_bytes, 8); | |
1582 | ||
1583 | bytes = rx_ring_entries * sizeof(*mgp->rx_small.shadow); | |
1584 | mgp->rx_small.shadow = kzalloc(bytes, GFP_KERNEL); | |
1585 | if (mgp->rx_small.shadow == NULL) | |
1586 | goto abort_with_tx_req_bytes; | |
1587 | ||
1588 | bytes = rx_ring_entries * sizeof(*mgp->rx_big.shadow); | |
1589 | mgp->rx_big.shadow = kzalloc(bytes, GFP_KERNEL); | |
1590 | if (mgp->rx_big.shadow == NULL) | |
1591 | goto abort_with_rx_small_shadow; | |
1592 | ||
1593 | /* allocate the host info rings */ | |
1594 | ||
1595 | bytes = tx_ring_entries * sizeof(*mgp->tx.info); | |
1596 | mgp->tx.info = kzalloc(bytes, GFP_KERNEL); | |
1597 | if (mgp->tx.info == NULL) | |
1598 | goto abort_with_rx_big_shadow; | |
1599 | ||
1600 | bytes = rx_ring_entries * sizeof(*mgp->rx_small.info); | |
1601 | mgp->rx_small.info = kzalloc(bytes, GFP_KERNEL); | |
1602 | if (mgp->rx_small.info == NULL) | |
1603 | goto abort_with_tx_info; | |
1604 | ||
1605 | bytes = rx_ring_entries * sizeof(*mgp->rx_big.info); | |
1606 | mgp->rx_big.info = kzalloc(bytes, GFP_KERNEL); | |
1607 | if (mgp->rx_big.info == NULL) | |
1608 | goto abort_with_rx_small_info; | |
1609 | ||
1610 | /* Fill the receive rings */ | |
c7dab99b BG |
1611 | mgp->rx_big.cnt = 0; |
1612 | mgp->rx_small.cnt = 0; | |
1613 | mgp->rx_big.fill_cnt = 0; | |
1614 | mgp->rx_small.fill_cnt = 0; | |
1615 | mgp->rx_small.page_offset = MYRI10GE_ALLOC_SIZE; | |
1616 | mgp->rx_big.page_offset = MYRI10GE_ALLOC_SIZE; | |
1617 | mgp->rx_small.watchdog_needed = 0; | |
1618 | mgp->rx_big.watchdog_needed = 0; | |
1619 | myri10ge_alloc_rx_pages(mgp, &mgp->rx_small, | |
1620 | mgp->small_bytes + MXGEFW_PAD, 0); | |
0da34b6d | 1621 | |
c7dab99b BG |
1622 | if (mgp->rx_small.fill_cnt < mgp->rx_small.mask + 1) { |
1623 | printk(KERN_ERR "myri10ge: %s: alloced only %d small bufs\n", | |
1624 | dev->name, mgp->rx_small.fill_cnt); | |
1625 | goto abort_with_rx_small_ring; | |
0da34b6d BG |
1626 | } |
1627 | ||
c7dab99b BG |
1628 | myri10ge_alloc_rx_pages(mgp, &mgp->rx_big, mgp->big_bytes, 0); |
1629 | if (mgp->rx_big.fill_cnt < mgp->rx_big.mask + 1) { | |
1630 | printk(KERN_ERR "myri10ge: %s: alloced only %d big bufs\n", | |
1631 | dev->name, mgp->rx_big.fill_cnt); | |
1632 | goto abort_with_rx_big_ring; | |
0da34b6d BG |
1633 | } |
1634 | ||
1635 | return 0; | |
1636 | ||
1637 | abort_with_rx_big_ring: | |
c7dab99b BG |
1638 | for (i = mgp->rx_big.cnt; i < mgp->rx_big.fill_cnt; i++) { |
1639 | int idx = i & mgp->rx_big.mask; | |
1640 | myri10ge_unmap_rx_page(mgp->pdev, &mgp->rx_big.info[idx], | |
1641 | mgp->big_bytes); | |
1642 | put_page(mgp->rx_big.info[idx].page); | |
0da34b6d BG |
1643 | } |
1644 | ||
1645 | abort_with_rx_small_ring: | |
c7dab99b BG |
1646 | for (i = mgp->rx_small.cnt; i < mgp->rx_small.fill_cnt; i++) { |
1647 | int idx = i & mgp->rx_small.mask; | |
1648 | myri10ge_unmap_rx_page(mgp->pdev, &mgp->rx_small.info[idx], | |
1649 | mgp->small_bytes + MXGEFW_PAD); | |
1650 | put_page(mgp->rx_small.info[idx].page); | |
0da34b6d | 1651 | } |
c7dab99b | 1652 | |
0da34b6d BG |
1653 | kfree(mgp->rx_big.info); |
1654 | ||
1655 | abort_with_rx_small_info: | |
1656 | kfree(mgp->rx_small.info); | |
1657 | ||
1658 | abort_with_tx_info: | |
1659 | kfree(mgp->tx.info); | |
1660 | ||
1661 | abort_with_rx_big_shadow: | |
1662 | kfree(mgp->rx_big.shadow); | |
1663 | ||
1664 | abort_with_rx_small_shadow: | |
1665 | kfree(mgp->rx_small.shadow); | |
1666 | ||
1667 | abort_with_tx_req_bytes: | |
1668 | kfree(mgp->tx.req_bytes); | |
1669 | mgp->tx.req_bytes = NULL; | |
1670 | mgp->tx.req_list = NULL; | |
1671 | ||
1672 | abort_with_nothing: | |
1673 | return status; | |
1674 | } | |
1675 | ||
1676 | static void myri10ge_free_rings(struct net_device *dev) | |
1677 | { | |
1678 | struct myri10ge_priv *mgp; | |
1679 | struct sk_buff *skb; | |
1680 | struct myri10ge_tx_buf *tx; | |
1681 | int i, len, idx; | |
1682 | ||
1683 | mgp = netdev_priv(dev); | |
1684 | ||
c7dab99b BG |
1685 | for (i = mgp->rx_big.cnt; i < mgp->rx_big.fill_cnt; i++) { |
1686 | idx = i & mgp->rx_big.mask; | |
1687 | if (i == mgp->rx_big.fill_cnt - 1) | |
1688 | mgp->rx_big.info[idx].page_offset = MYRI10GE_ALLOC_SIZE; | |
1689 | myri10ge_unmap_rx_page(mgp->pdev, &mgp->rx_big.info[idx], | |
1690 | mgp->big_bytes); | |
1691 | put_page(mgp->rx_big.info[idx].page); | |
0da34b6d BG |
1692 | } |
1693 | ||
c7dab99b BG |
1694 | for (i = mgp->rx_small.cnt; i < mgp->rx_small.fill_cnt; i++) { |
1695 | idx = i & mgp->rx_small.mask; | |
1696 | if (i == mgp->rx_small.fill_cnt - 1) | |
1697 | mgp->rx_small.info[idx].page_offset = | |
1698 | MYRI10GE_ALLOC_SIZE; | |
1699 | myri10ge_unmap_rx_page(mgp->pdev, &mgp->rx_small.info[idx], | |
1700 | mgp->small_bytes + MXGEFW_PAD); | |
1701 | put_page(mgp->rx_small.info[idx].page); | |
1702 | } | |
0da34b6d BG |
1703 | tx = &mgp->tx; |
1704 | while (tx->done != tx->req) { | |
1705 | idx = tx->done & tx->mask; | |
1706 | skb = tx->info[idx].skb; | |
1707 | ||
1708 | /* Mark as free */ | |
1709 | tx->info[idx].skb = NULL; | |
1710 | tx->done++; | |
1711 | len = pci_unmap_len(&tx->info[idx], len); | |
1712 | pci_unmap_len_set(&tx->info[idx], len, 0); | |
1713 | if (skb) { | |
1714 | mgp->stats.tx_dropped++; | |
1715 | dev_kfree_skb_any(skb); | |
1716 | if (len) | |
1717 | pci_unmap_single(mgp->pdev, | |
1718 | pci_unmap_addr(&tx->info[idx], | |
1719 | bus), len, | |
1720 | PCI_DMA_TODEVICE); | |
1721 | } else { | |
1722 | if (len) | |
1723 | pci_unmap_page(mgp->pdev, | |
1724 | pci_unmap_addr(&tx->info[idx], | |
1725 | bus), len, | |
1726 | PCI_DMA_TODEVICE); | |
1727 | } | |
1728 | } | |
1729 | kfree(mgp->rx_big.info); | |
1730 | ||
1731 | kfree(mgp->rx_small.info); | |
1732 | ||
1733 | kfree(mgp->tx.info); | |
1734 | ||
1735 | kfree(mgp->rx_big.shadow); | |
1736 | ||
1737 | kfree(mgp->rx_small.shadow); | |
1738 | ||
1739 | kfree(mgp->tx.req_bytes); | |
1740 | mgp->tx.req_bytes = NULL; | |
1741 | mgp->tx.req_list = NULL; | |
1742 | } | |
1743 | ||
df30a740 BG |
1744 | static int myri10ge_request_irq(struct myri10ge_priv *mgp) |
1745 | { | |
1746 | struct pci_dev *pdev = mgp->pdev; | |
1747 | int status; | |
1748 | ||
1749 | if (myri10ge_msi) { | |
1750 | status = pci_enable_msi(pdev); | |
1751 | if (status != 0) | |
1752 | dev_err(&pdev->dev, | |
1753 | "Error %d setting up MSI; falling back to xPIC\n", | |
1754 | status); | |
1755 | else | |
1756 | mgp->msi_enabled = 1; | |
1757 | } else { | |
1758 | mgp->msi_enabled = 0; | |
1759 | } | |
1760 | status = request_irq(pdev->irq, myri10ge_intr, IRQF_SHARED, | |
1761 | mgp->dev->name, mgp); | |
1762 | if (status != 0) { | |
1763 | dev_err(&pdev->dev, "failed to allocate IRQ\n"); | |
1764 | if (mgp->msi_enabled) | |
1765 | pci_disable_msi(pdev); | |
1766 | } | |
1767 | return status; | |
1768 | } | |
1769 | ||
1770 | static void myri10ge_free_irq(struct myri10ge_priv *mgp) | |
1771 | { | |
1772 | struct pci_dev *pdev = mgp->pdev; | |
1773 | ||
1774 | free_irq(pdev->irq, mgp); | |
1775 | if (mgp->msi_enabled) | |
1776 | pci_disable_msi(pdev); | |
1777 | } | |
1778 | ||
1e6e9342 AG |
1779 | static int |
1780 | myri10ge_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr, | |
1781 | void **ip_hdr, void **tcpudp_hdr, | |
1782 | u64 * hdr_flags, void *priv) | |
1783 | { | |
1784 | struct ethhdr *eh; | |
1785 | struct vlan_ethhdr *veh; | |
1786 | struct iphdr *iph; | |
1787 | u8 *va = page_address(frag->page) + frag->page_offset; | |
1788 | unsigned long ll_hlen; | |
1789 | __wsum csum = (__wsum) (unsigned long)priv; | |
1790 | ||
1791 | /* find the mac header, aborting if not IPv4 */ | |
1792 | ||
1793 | eh = (struct ethhdr *)va; | |
1794 | *mac_hdr = eh; | |
1795 | ll_hlen = ETH_HLEN; | |
1796 | if (eh->h_proto != htons(ETH_P_IP)) { | |
1797 | if (eh->h_proto == htons(ETH_P_8021Q)) { | |
1798 | veh = (struct vlan_ethhdr *)va; | |
1799 | if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP)) | |
1800 | return -1; | |
1801 | ||
1802 | ll_hlen += VLAN_HLEN; | |
1803 | ||
1804 | /* | |
1805 | * HW checksum starts ETH_HLEN bytes into | |
1806 | * frame, so we must subtract off the VLAN | |
1807 | * header's checksum before csum can be used | |
1808 | */ | |
1809 | csum = csum_sub(csum, csum_partial(va + ETH_HLEN, | |
1810 | VLAN_HLEN, 0)); | |
1811 | } else { | |
1812 | return -1; | |
1813 | } | |
1814 | } | |
1815 | *hdr_flags = LRO_IPV4; | |
1816 | ||
1817 | iph = (struct iphdr *)(va + ll_hlen); | |
1818 | *ip_hdr = iph; | |
1819 | if (iph->protocol != IPPROTO_TCP) | |
1820 | return -1; | |
1821 | *hdr_flags |= LRO_TCP; | |
1822 | *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2); | |
1823 | ||
1824 | /* verify the IP checksum */ | |
1825 | if (unlikely(ip_fast_csum((u8 *) iph, iph->ihl))) | |
1826 | return -1; | |
1827 | ||
1828 | /* verify the checksum */ | |
1829 | if (unlikely(csum_tcpudp_magic(iph->saddr, iph->daddr, | |
1830 | ntohs(iph->tot_len) - (iph->ihl << 2), | |
1831 | IPPROTO_TCP, csum))) | |
1832 | return -1; | |
1833 | ||
1834 | return 0; | |
1835 | } | |
1836 | ||
0da34b6d BG |
1837 | static int myri10ge_open(struct net_device *dev) |
1838 | { | |
1839 | struct myri10ge_priv *mgp; | |
1840 | struct myri10ge_cmd cmd; | |
1e6e9342 | 1841 | struct net_lro_mgr *lro_mgr; |
0da34b6d BG |
1842 | int status, big_pow2; |
1843 | ||
1844 | mgp = netdev_priv(dev); | |
1845 | ||
1846 | if (mgp->running != MYRI10GE_ETH_STOPPED) | |
1847 | return -EBUSY; | |
1848 | ||
1849 | mgp->running = MYRI10GE_ETH_STARTING; | |
1850 | status = myri10ge_reset(mgp); | |
1851 | if (status != 0) { | |
1852 | printk(KERN_ERR "myri10ge: %s: failed reset\n", dev->name); | |
df30a740 | 1853 | goto abort_with_nothing; |
0da34b6d BG |
1854 | } |
1855 | ||
df30a740 BG |
1856 | status = myri10ge_request_irq(mgp); |
1857 | if (status != 0) | |
1858 | goto abort_with_nothing; | |
1859 | ||
0da34b6d BG |
1860 | /* decide what small buffer size to use. For good TCP rx |
1861 | * performance, it is important to not receive 1514 byte | |
1862 | * frames into jumbo buffers, as it confuses the socket buffer | |
1863 | * accounting code, leading to drops and erratic performance. | |
1864 | */ | |
1865 | ||
1866 | if (dev->mtu <= ETH_DATA_LEN) | |
c7dab99b BG |
1867 | /* enough for a TCP header */ |
1868 | mgp->small_bytes = (128 > SMP_CACHE_BYTES) | |
1869 | ? (128 - MXGEFW_PAD) | |
1870 | : (SMP_CACHE_BYTES - MXGEFW_PAD); | |
0da34b6d | 1871 | else |
de3c4507 BG |
1872 | /* enough for a vlan encapsulated ETH_DATA_LEN frame */ |
1873 | mgp->small_bytes = VLAN_ETH_FRAME_LEN; | |
0da34b6d BG |
1874 | |
1875 | /* Override the small buffer size? */ | |
1876 | if (myri10ge_small_bytes > 0) | |
1877 | mgp->small_bytes = myri10ge_small_bytes; | |
1878 | ||
0da34b6d BG |
1879 | /* get the lanai pointers to the send and receive rings */ |
1880 | ||
1881 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_OFFSET, &cmd, 0); | |
1882 | mgp->tx.lanai = | |
1883 | (struct mcp_kreq_ether_send __iomem *)(mgp->sram + cmd.data0); | |
1884 | ||
1885 | status |= | |
1886 | myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SMALL_RX_OFFSET, &cmd, 0); | |
1887 | mgp->rx_small.lanai = | |
1888 | (struct mcp_kreq_ether_recv __iomem *)(mgp->sram + cmd.data0); | |
1889 | ||
1890 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_BIG_RX_OFFSET, &cmd, 0); | |
1891 | mgp->rx_big.lanai = | |
1892 | (struct mcp_kreq_ether_recv __iomem *)(mgp->sram + cmd.data0); | |
1893 | ||
1894 | if (status != 0) { | |
1895 | printk(KERN_ERR | |
1896 | "myri10ge: %s: failed to get ring sizes or locations\n", | |
1897 | dev->name); | |
1898 | mgp->running = MYRI10GE_ETH_STOPPED; | |
df30a740 | 1899 | goto abort_with_irq; |
0da34b6d BG |
1900 | } |
1901 | ||
276e26c3 | 1902 | if (myri10ge_wcfifo && mgp->wc_enabled) { |
e700f9f4 BG |
1903 | mgp->tx.wc_fifo = (u8 __iomem *) mgp->sram + MXGEFW_ETH_SEND_4; |
1904 | mgp->rx_small.wc_fifo = | |
1905 | (u8 __iomem *) mgp->sram + MXGEFW_ETH_RECV_SMALL; | |
1906 | mgp->rx_big.wc_fifo = | |
1907 | (u8 __iomem *) mgp->sram + MXGEFW_ETH_RECV_BIG; | |
0da34b6d BG |
1908 | } else { |
1909 | mgp->tx.wc_fifo = NULL; | |
1910 | mgp->rx_small.wc_fifo = NULL; | |
1911 | mgp->rx_big.wc_fifo = NULL; | |
1912 | } | |
1913 | ||
0da34b6d BG |
1914 | /* Firmware needs the big buff size as a power of 2. Lie and |
1915 | * tell him the buffer is larger, because we only use 1 | |
1916 | * buffer/pkt, and the mtu will prevent overruns. | |
1917 | */ | |
13348bee | 1918 | big_pow2 = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD; |
c7dab99b | 1919 | if (big_pow2 < MYRI10GE_ALLOC_SIZE / 2) { |
199126a2 | 1920 | while (!is_power_of_2(big_pow2)) |
c7dab99b | 1921 | big_pow2++; |
13348bee | 1922 | mgp->big_bytes = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD; |
c7dab99b BG |
1923 | } else { |
1924 | big_pow2 = MYRI10GE_ALLOC_SIZE; | |
1925 | mgp->big_bytes = big_pow2; | |
1926 | } | |
1927 | ||
1928 | status = myri10ge_allocate_rings(dev); | |
1929 | if (status != 0) | |
df30a740 | 1930 | goto abort_with_irq; |
0da34b6d BG |
1931 | |
1932 | /* now give firmware buffers sizes, and MTU */ | |
1933 | cmd.data0 = dev->mtu + ETH_HLEN + VLAN_HLEN; | |
1934 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_MTU, &cmd, 0); | |
1935 | cmd.data0 = mgp->small_bytes; | |
1936 | status |= | |
1937 | myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_SMALL_BUFFER_SIZE, &cmd, 0); | |
1938 | cmd.data0 = big_pow2; | |
1939 | status |= | |
1940 | myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_BIG_BUFFER_SIZE, &cmd, 0); | |
1941 | if (status) { | |
1942 | printk(KERN_ERR "myri10ge: %s: Couldn't set buffer sizes\n", | |
1943 | dev->name); | |
1944 | goto abort_with_rings; | |
1945 | } | |
1946 | ||
1947 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(mgp->fw_stats_bus); | |
1948 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(mgp->fw_stats_bus); | |
85a7ea1b BG |
1949 | cmd.data2 = sizeof(struct mcp_irq_data); |
1950 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_STATS_DMA_V2, &cmd, 0); | |
1951 | if (status == -ENOSYS) { | |
1952 | dma_addr_t bus = mgp->fw_stats_bus; | |
1953 | bus += offsetof(struct mcp_irq_data, send_done_count); | |
1954 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(bus); | |
1955 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(bus); | |
1956 | status = myri10ge_send_cmd(mgp, | |
1957 | MXGEFW_CMD_SET_STATS_DMA_OBSOLETE, | |
1958 | &cmd, 0); | |
1959 | /* Firmware cannot support multicast without STATS_DMA_V2 */ | |
1960 | mgp->fw_multicast_support = 0; | |
1961 | } else { | |
1962 | mgp->fw_multicast_support = 1; | |
1963 | } | |
0da34b6d BG |
1964 | if (status) { |
1965 | printk(KERN_ERR "myri10ge: %s: Couldn't set stats DMA\n", | |
1966 | dev->name); | |
1967 | goto abort_with_rings; | |
1968 | } | |
1969 | ||
40f6cff5 | 1970 | mgp->link_state = htonl(~0U); |
0da34b6d BG |
1971 | mgp->rdma_tags_available = 15; |
1972 | ||
1e6e9342 AG |
1973 | lro_mgr = &mgp->rx_done.lro_mgr; |
1974 | lro_mgr->dev = dev; | |
1975 | lro_mgr->features = LRO_F_NAPI; | |
1976 | lro_mgr->ip_summed = CHECKSUM_COMPLETE; | |
1977 | lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY; | |
1978 | lro_mgr->max_desc = MYRI10GE_MAX_LRO_DESCRIPTORS; | |
1979 | lro_mgr->lro_arr = mgp->rx_done.lro_desc; | |
1980 | lro_mgr->get_frag_header = myri10ge_get_frag_header; | |
1981 | lro_mgr->max_aggr = myri10ge_lro_max_pkts; | |
621544eb | 1982 | lro_mgr->frag_align_pad = 2; |
1e6e9342 AG |
1983 | if (lro_mgr->max_aggr > MAX_SKB_FRAGS) |
1984 | lro_mgr->max_aggr = MAX_SKB_FRAGS; | |
1985 | ||
bea3348e | 1986 | napi_enable(&mgp->napi); /* must happen prior to any irq */ |
0da34b6d BG |
1987 | |
1988 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_UP, &cmd, 0); | |
1989 | if (status) { | |
1990 | printk(KERN_ERR "myri10ge: %s: Couldn't bring up link\n", | |
1991 | dev->name); | |
1992 | goto abort_with_rings; | |
1993 | } | |
1994 | ||
1995 | mgp->wake_queue = 0; | |
1996 | mgp->stop_queue = 0; | |
1997 | mgp->running = MYRI10GE_ETH_RUNNING; | |
1998 | mgp->watchdog_timer.expires = jiffies + myri10ge_watchdog_timeout * HZ; | |
1999 | add_timer(&mgp->watchdog_timer); | |
2000 | netif_wake_queue(dev); | |
2001 | return 0; | |
2002 | ||
2003 | abort_with_rings: | |
2004 | myri10ge_free_rings(dev); | |
2005 | ||
df30a740 BG |
2006 | abort_with_irq: |
2007 | myri10ge_free_irq(mgp); | |
2008 | ||
0da34b6d BG |
2009 | abort_with_nothing: |
2010 | mgp->running = MYRI10GE_ETH_STOPPED; | |
2011 | return -ENOMEM; | |
2012 | } | |
2013 | ||
2014 | static int myri10ge_close(struct net_device *dev) | |
2015 | { | |
2016 | struct myri10ge_priv *mgp; | |
2017 | struct myri10ge_cmd cmd; | |
2018 | int status, old_down_cnt; | |
2019 | ||
2020 | mgp = netdev_priv(dev); | |
2021 | ||
2022 | if (mgp->running != MYRI10GE_ETH_RUNNING) | |
2023 | return 0; | |
2024 | ||
2025 | if (mgp->tx.req_bytes == NULL) | |
2026 | return 0; | |
2027 | ||
2028 | del_timer_sync(&mgp->watchdog_timer); | |
2029 | mgp->running = MYRI10GE_ETH_STOPPING; | |
bea3348e | 2030 | napi_disable(&mgp->napi); |
0da34b6d BG |
2031 | netif_carrier_off(dev); |
2032 | netif_stop_queue(dev); | |
2033 | old_down_cnt = mgp->down_cnt; | |
2034 | mb(); | |
2035 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_DOWN, &cmd, 0); | |
2036 | if (status) | |
2037 | printk(KERN_ERR "myri10ge: %s: Couldn't bring down link\n", | |
2038 | dev->name); | |
2039 | ||
2040 | wait_event_timeout(mgp->down_wq, old_down_cnt != mgp->down_cnt, HZ); | |
2041 | if (old_down_cnt == mgp->down_cnt) | |
2042 | printk(KERN_ERR "myri10ge: %s never got down irq\n", dev->name); | |
2043 | ||
2044 | netif_tx_disable(dev); | |
df30a740 | 2045 | myri10ge_free_irq(mgp); |
0da34b6d BG |
2046 | myri10ge_free_rings(dev); |
2047 | ||
2048 | mgp->running = MYRI10GE_ETH_STOPPED; | |
2049 | return 0; | |
2050 | } | |
2051 | ||
2052 | /* copy an array of struct mcp_kreq_ether_send's to the mcp. Copy | |
2053 | * backwards one at a time and handle ring wraps */ | |
2054 | ||
2055 | static inline void | |
2056 | myri10ge_submit_req_backwards(struct myri10ge_tx_buf *tx, | |
2057 | struct mcp_kreq_ether_send *src, int cnt) | |
2058 | { | |
2059 | int idx, starting_slot; | |
2060 | starting_slot = tx->req; | |
2061 | while (cnt > 1) { | |
2062 | cnt--; | |
2063 | idx = (starting_slot + cnt) & tx->mask; | |
2064 | myri10ge_pio_copy(&tx->lanai[idx], &src[cnt], sizeof(*src)); | |
2065 | mb(); | |
2066 | } | |
2067 | } | |
2068 | ||
2069 | /* | |
2070 | * copy an array of struct mcp_kreq_ether_send's to the mcp. Copy | |
2071 | * at most 32 bytes at a time, so as to avoid involving the software | |
2072 | * pio handler in the nic. We re-write the first segment's flags | |
2073 | * to mark them valid only after writing the entire chain. | |
2074 | */ | |
2075 | ||
2076 | static inline void | |
2077 | myri10ge_submit_req(struct myri10ge_tx_buf *tx, struct mcp_kreq_ether_send *src, | |
2078 | int cnt) | |
2079 | { | |
2080 | int idx, i; | |
2081 | struct mcp_kreq_ether_send __iomem *dstp, *dst; | |
2082 | struct mcp_kreq_ether_send *srcp; | |
2083 | u8 last_flags; | |
2084 | ||
2085 | idx = tx->req & tx->mask; | |
2086 | ||
2087 | last_flags = src->flags; | |
2088 | src->flags = 0; | |
2089 | mb(); | |
2090 | dst = dstp = &tx->lanai[idx]; | |
2091 | srcp = src; | |
2092 | ||
2093 | if ((idx + cnt) < tx->mask) { | |
2094 | for (i = 0; i < (cnt - 1); i += 2) { | |
2095 | myri10ge_pio_copy(dstp, srcp, 2 * sizeof(*src)); | |
2096 | mb(); /* force write every 32 bytes */ | |
2097 | srcp += 2; | |
2098 | dstp += 2; | |
2099 | } | |
2100 | } else { | |
2101 | /* submit all but the first request, and ensure | |
2102 | * that it is submitted below */ | |
2103 | myri10ge_submit_req_backwards(tx, src, cnt); | |
2104 | i = 0; | |
2105 | } | |
2106 | if (i < cnt) { | |
2107 | /* submit the first request */ | |
2108 | myri10ge_pio_copy(dstp, srcp, sizeof(*src)); | |
2109 | mb(); /* barrier before setting valid flag */ | |
2110 | } | |
2111 | ||
2112 | /* re-write the last 32-bits with the valid flags */ | |
2113 | src->flags = last_flags; | |
40f6cff5 | 2114 | put_be32(*((__be32 *) src + 3), (__be32 __iomem *) dst + 3); |
0da34b6d BG |
2115 | tx->req += cnt; |
2116 | mb(); | |
2117 | } | |
2118 | ||
2119 | static inline void | |
2120 | myri10ge_submit_req_wc(struct myri10ge_tx_buf *tx, | |
2121 | struct mcp_kreq_ether_send *src, int cnt) | |
2122 | { | |
2123 | tx->req += cnt; | |
2124 | mb(); | |
2125 | while (cnt >= 4) { | |
2126 | myri10ge_pio_copy(tx->wc_fifo, src, 64); | |
2127 | mb(); | |
2128 | src += 4; | |
2129 | cnt -= 4; | |
2130 | } | |
2131 | if (cnt > 0) { | |
2132 | /* pad it to 64 bytes. The src is 64 bytes bigger than it | |
2133 | * needs to be so that we don't overrun it */ | |
e700f9f4 BG |
2134 | myri10ge_pio_copy(tx->wc_fifo + MXGEFW_ETH_SEND_OFFSET(cnt), |
2135 | src, 64); | |
0da34b6d BG |
2136 | mb(); |
2137 | } | |
2138 | } | |
2139 | ||
2140 | /* | |
2141 | * Transmit a packet. We need to split the packet so that a single | |
2142 | * segment does not cross myri10ge->tx.boundary, so this makes segment | |
2143 | * counting tricky. So rather than try to count segments up front, we | |
2144 | * just give up if there are too few segments to hold a reasonably | |
2145 | * fragmented packet currently available. If we run | |
2146 | * out of segments while preparing a packet for DMA, we just linearize | |
2147 | * it and try again. | |
2148 | */ | |
2149 | ||
2150 | static int myri10ge_xmit(struct sk_buff *skb, struct net_device *dev) | |
2151 | { | |
2152 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
2153 | struct mcp_kreq_ether_send *req; | |
2154 | struct myri10ge_tx_buf *tx = &mgp->tx; | |
2155 | struct skb_frag_struct *frag; | |
2156 | dma_addr_t bus; | |
40f6cff5 AV |
2157 | u32 low; |
2158 | __be32 high_swapped; | |
0da34b6d BG |
2159 | unsigned int len; |
2160 | int idx, last_idx, avail, frag_cnt, frag_idx, count, mss, max_segments; | |
2161 | u16 pseudo_hdr_offset, cksum_offset; | |
2162 | int cum_len, seglen, boundary, rdma_count; | |
2163 | u8 flags, odd_flag; | |
2164 | ||
2165 | again: | |
2166 | req = tx->req_list; | |
2167 | avail = tx->mask - 1 - (tx->req - tx->done); | |
2168 | ||
2169 | mss = 0; | |
2170 | max_segments = MXGEFW_MAX_SEND_DESC; | |
2171 | ||
917690cd | 2172 | if (skb_is_gso(skb)) { |
7967168c | 2173 | mss = skb_shinfo(skb)->gso_size; |
917690cd | 2174 | max_segments = MYRI10GE_MAX_SEND_DESC_TSO; |
0da34b6d | 2175 | } |
0da34b6d BG |
2176 | |
2177 | if ((unlikely(avail < max_segments))) { | |
2178 | /* we are out of transmit resources */ | |
2179 | mgp->stop_queue++; | |
2180 | netif_stop_queue(dev); | |
2181 | return 1; | |
2182 | } | |
2183 | ||
2184 | /* Setup checksum offloading, if needed */ | |
2185 | cksum_offset = 0; | |
2186 | pseudo_hdr_offset = 0; | |
2187 | odd_flag = 0; | |
2188 | flags = (MXGEFW_FLAGS_NO_TSO | MXGEFW_FLAGS_FIRST); | |
84fa7933 | 2189 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
ea2ae17d | 2190 | cksum_offset = skb_transport_offset(skb); |
ff1dcadb | 2191 | pseudo_hdr_offset = cksum_offset + skb->csum_offset; |
0da34b6d BG |
2192 | /* If the headers are excessively large, then we must |
2193 | * fall back to a software checksum */ | |
4f93fde0 BG |
2194 | if (unlikely(!mss && (cksum_offset > 255 || |
2195 | pseudo_hdr_offset > 127))) { | |
84fa7933 | 2196 | if (skb_checksum_help(skb)) |
0da34b6d BG |
2197 | goto drop; |
2198 | cksum_offset = 0; | |
2199 | pseudo_hdr_offset = 0; | |
2200 | } else { | |
0da34b6d BG |
2201 | odd_flag = MXGEFW_FLAGS_ALIGN_ODD; |
2202 | flags |= MXGEFW_FLAGS_CKSUM; | |
2203 | } | |
2204 | } | |
2205 | ||
2206 | cum_len = 0; | |
2207 | ||
0da34b6d BG |
2208 | if (mss) { /* TSO */ |
2209 | /* this removes any CKSUM flag from before */ | |
2210 | flags = (MXGEFW_FLAGS_TSO_HDR | MXGEFW_FLAGS_FIRST); | |
2211 | ||
2212 | /* negative cum_len signifies to the | |
2213 | * send loop that we are still in the | |
2214 | * header portion of the TSO packet. | |
4f93fde0 | 2215 | * TSO header can be at most 1KB long */ |
ab6a5bb6 | 2216 | cum_len = -(skb_transport_offset(skb) + tcp_hdrlen(skb)); |
0da34b6d | 2217 | |
4f93fde0 BG |
2218 | /* for IPv6 TSO, the checksum offset stores the |
2219 | * TCP header length, to save the firmware from | |
2220 | * the need to parse the headers */ | |
2221 | if (skb_is_gso_v6(skb)) { | |
2222 | cksum_offset = tcp_hdrlen(skb); | |
2223 | /* Can only handle headers <= max_tso6 long */ | |
2224 | if (unlikely(-cum_len > mgp->max_tso6)) | |
2225 | return myri10ge_sw_tso(skb, dev); | |
2226 | } | |
0da34b6d BG |
2227 | /* for TSO, pseudo_hdr_offset holds mss. |
2228 | * The firmware figures out where to put | |
2229 | * the checksum by parsing the header. */ | |
40f6cff5 | 2230 | pseudo_hdr_offset = mss; |
0da34b6d | 2231 | } else |
0da34b6d BG |
2232 | /* Mark small packets, and pad out tiny packets */ |
2233 | if (skb->len <= MXGEFW_SEND_SMALL_SIZE) { | |
2234 | flags |= MXGEFW_FLAGS_SMALL; | |
2235 | ||
2236 | /* pad frames to at least ETH_ZLEN bytes */ | |
2237 | if (unlikely(skb->len < ETH_ZLEN)) { | |
5b057c6b | 2238 | if (skb_padto(skb, ETH_ZLEN)) { |
0da34b6d BG |
2239 | /* The packet is gone, so we must |
2240 | * return 0 */ | |
2241 | mgp->stats.tx_dropped += 1; | |
2242 | return 0; | |
2243 | } | |
2244 | /* adjust the len to account for the zero pad | |
2245 | * so that the nic can know how long it is */ | |
2246 | skb->len = ETH_ZLEN; | |
2247 | } | |
2248 | } | |
2249 | ||
2250 | /* map the skb for DMA */ | |
2251 | len = skb->len - skb->data_len; | |
2252 | idx = tx->req & tx->mask; | |
2253 | tx->info[idx].skb = skb; | |
2254 | bus = pci_map_single(mgp->pdev, skb->data, len, PCI_DMA_TODEVICE); | |
2255 | pci_unmap_addr_set(&tx->info[idx], bus, bus); | |
2256 | pci_unmap_len_set(&tx->info[idx], len, len); | |
2257 | ||
2258 | frag_cnt = skb_shinfo(skb)->nr_frags; | |
2259 | frag_idx = 0; | |
2260 | count = 0; | |
2261 | rdma_count = 0; | |
2262 | ||
2263 | /* "rdma_count" is the number of RDMAs belonging to the | |
2264 | * current packet BEFORE the current send request. For | |
2265 | * non-TSO packets, this is equal to "count". | |
2266 | * For TSO packets, rdma_count needs to be reset | |
2267 | * to 0 after a segment cut. | |
2268 | * | |
2269 | * The rdma_count field of the send request is | |
2270 | * the number of RDMAs of the packet starting at | |
2271 | * that request. For TSO send requests with one ore more cuts | |
2272 | * in the middle, this is the number of RDMAs starting | |
2273 | * after the last cut in the request. All previous | |
2274 | * segments before the last cut implicitly have 1 RDMA. | |
2275 | * | |
2276 | * Since the number of RDMAs is not known beforehand, | |
2277 | * it must be filled-in retroactively - after each | |
2278 | * segmentation cut or at the end of the entire packet. | |
2279 | */ | |
2280 | ||
2281 | while (1) { | |
2282 | /* Break the SKB or Fragment up into pieces which | |
2283 | * do not cross mgp->tx.boundary */ | |
2284 | low = MYRI10GE_LOWPART_TO_U32(bus); | |
2285 | high_swapped = htonl(MYRI10GE_HIGHPART_TO_U32(bus)); | |
2286 | while (len) { | |
2287 | u8 flags_next; | |
2288 | int cum_len_next; | |
2289 | ||
2290 | if (unlikely(count == max_segments)) | |
2291 | goto abort_linearize; | |
2292 | ||
2293 | boundary = (low + tx->boundary) & ~(tx->boundary - 1); | |
2294 | seglen = boundary - low; | |
2295 | if (seglen > len) | |
2296 | seglen = len; | |
2297 | flags_next = flags & ~MXGEFW_FLAGS_FIRST; | |
2298 | cum_len_next = cum_len + seglen; | |
0da34b6d BG |
2299 | if (mss) { /* TSO */ |
2300 | (req - rdma_count)->rdma_count = rdma_count + 1; | |
2301 | ||
2302 | if (likely(cum_len >= 0)) { /* payload */ | |
2303 | int next_is_first, chop; | |
2304 | ||
2305 | chop = (cum_len_next > mss); | |
2306 | cum_len_next = cum_len_next % mss; | |
2307 | next_is_first = (cum_len_next == 0); | |
2308 | flags |= chop * MXGEFW_FLAGS_TSO_CHOP; | |
2309 | flags_next |= next_is_first * | |
2310 | MXGEFW_FLAGS_FIRST; | |
2311 | rdma_count |= -(chop | next_is_first); | |
2312 | rdma_count += chop & !next_is_first; | |
2313 | } else if (likely(cum_len_next >= 0)) { /* header ends */ | |
2314 | int small; | |
2315 | ||
2316 | rdma_count = -1; | |
2317 | cum_len_next = 0; | |
2318 | seglen = -cum_len; | |
2319 | small = (mss <= MXGEFW_SEND_SMALL_SIZE); | |
2320 | flags_next = MXGEFW_FLAGS_TSO_PLD | | |
2321 | MXGEFW_FLAGS_FIRST | | |
2322 | (small * MXGEFW_FLAGS_SMALL); | |
2323 | } | |
2324 | } | |
0da34b6d BG |
2325 | req->addr_high = high_swapped; |
2326 | req->addr_low = htonl(low); | |
40f6cff5 | 2327 | req->pseudo_hdr_offset = htons(pseudo_hdr_offset); |
0da34b6d BG |
2328 | req->pad = 0; /* complete solid 16-byte block; does this matter? */ |
2329 | req->rdma_count = 1; | |
2330 | req->length = htons(seglen); | |
2331 | req->cksum_offset = cksum_offset; | |
2332 | req->flags = flags | ((cum_len & 1) * odd_flag); | |
2333 | ||
2334 | low += seglen; | |
2335 | len -= seglen; | |
2336 | cum_len = cum_len_next; | |
2337 | flags = flags_next; | |
2338 | req++; | |
2339 | count++; | |
2340 | rdma_count++; | |
4f93fde0 BG |
2341 | if (cksum_offset != 0 && !(mss && skb_is_gso_v6(skb))) { |
2342 | if (unlikely(cksum_offset > seglen)) | |
2343 | cksum_offset -= seglen; | |
2344 | else | |
2345 | cksum_offset = 0; | |
2346 | } | |
0da34b6d BG |
2347 | } |
2348 | if (frag_idx == frag_cnt) | |
2349 | break; | |
2350 | ||
2351 | /* map next fragment for DMA */ | |
2352 | idx = (count + tx->req) & tx->mask; | |
2353 | frag = &skb_shinfo(skb)->frags[frag_idx]; | |
2354 | frag_idx++; | |
2355 | len = frag->size; | |
2356 | bus = pci_map_page(mgp->pdev, frag->page, frag->page_offset, | |
2357 | len, PCI_DMA_TODEVICE); | |
2358 | pci_unmap_addr_set(&tx->info[idx], bus, bus); | |
2359 | pci_unmap_len_set(&tx->info[idx], len, len); | |
2360 | } | |
2361 | ||
2362 | (req - rdma_count)->rdma_count = rdma_count; | |
0da34b6d BG |
2363 | if (mss) |
2364 | do { | |
2365 | req--; | |
2366 | req->flags |= MXGEFW_FLAGS_TSO_LAST; | |
2367 | } while (!(req->flags & (MXGEFW_FLAGS_TSO_CHOP | | |
2368 | MXGEFW_FLAGS_FIRST))); | |
0da34b6d BG |
2369 | idx = ((count - 1) + tx->req) & tx->mask; |
2370 | tx->info[idx].last = 1; | |
2371 | if (tx->wc_fifo == NULL) | |
2372 | myri10ge_submit_req(tx, tx->req_list, count); | |
2373 | else | |
2374 | myri10ge_submit_req_wc(tx, tx->req_list, count); | |
2375 | tx->pkt_start++; | |
2376 | if ((avail - count) < MXGEFW_MAX_SEND_DESC) { | |
2377 | mgp->stop_queue++; | |
2378 | netif_stop_queue(dev); | |
2379 | } | |
2380 | dev->trans_start = jiffies; | |
2381 | return 0; | |
2382 | ||
2383 | abort_linearize: | |
2384 | /* Free any DMA resources we've alloced and clear out the skb | |
2385 | * slot so as to not trip up assertions, and to avoid a | |
2386 | * double-free if linearizing fails */ | |
2387 | ||
2388 | last_idx = (idx + 1) & tx->mask; | |
2389 | idx = tx->req & tx->mask; | |
2390 | tx->info[idx].skb = NULL; | |
2391 | do { | |
2392 | len = pci_unmap_len(&tx->info[idx], len); | |
2393 | if (len) { | |
2394 | if (tx->info[idx].skb != NULL) | |
2395 | pci_unmap_single(mgp->pdev, | |
2396 | pci_unmap_addr(&tx->info[idx], | |
2397 | bus), len, | |
2398 | PCI_DMA_TODEVICE); | |
2399 | else | |
2400 | pci_unmap_page(mgp->pdev, | |
2401 | pci_unmap_addr(&tx->info[idx], | |
2402 | bus), len, | |
2403 | PCI_DMA_TODEVICE); | |
2404 | pci_unmap_len_set(&tx->info[idx], len, 0); | |
2405 | tx->info[idx].skb = NULL; | |
2406 | } | |
2407 | idx = (idx + 1) & tx->mask; | |
2408 | } while (idx != last_idx); | |
89114afd | 2409 | if (skb_is_gso(skb)) { |
0da34b6d BG |
2410 | printk(KERN_ERR |
2411 | "myri10ge: %s: TSO but wanted to linearize?!?!?\n", | |
2412 | mgp->dev->name); | |
2413 | goto drop; | |
2414 | } | |
2415 | ||
bec0e859 | 2416 | if (skb_linearize(skb)) |
0da34b6d BG |
2417 | goto drop; |
2418 | ||
2419 | mgp->tx_linearized++; | |
2420 | goto again; | |
2421 | ||
2422 | drop: | |
2423 | dev_kfree_skb_any(skb); | |
2424 | mgp->stats.tx_dropped += 1; | |
2425 | return 0; | |
2426 | ||
2427 | } | |
2428 | ||
4f93fde0 BG |
2429 | static int myri10ge_sw_tso(struct sk_buff *skb, struct net_device *dev) |
2430 | { | |
2431 | struct sk_buff *segs, *curr; | |
2432 | struct myri10ge_priv *mgp = dev->priv; | |
2433 | int status; | |
2434 | ||
2435 | segs = skb_gso_segment(skb, dev->features & ~NETIF_F_TSO6); | |
2436 | if (unlikely(IS_ERR(segs))) | |
2437 | goto drop; | |
2438 | ||
2439 | while (segs) { | |
2440 | curr = segs; | |
2441 | segs = segs->next; | |
2442 | curr->next = NULL; | |
2443 | status = myri10ge_xmit(curr, dev); | |
2444 | if (status != 0) { | |
2445 | dev_kfree_skb_any(curr); | |
2446 | if (segs != NULL) { | |
2447 | curr = segs; | |
2448 | segs = segs->next; | |
2449 | curr->next = NULL; | |
2450 | dev_kfree_skb_any(segs); | |
2451 | } | |
2452 | goto drop; | |
2453 | } | |
2454 | } | |
2455 | dev_kfree_skb_any(skb); | |
2456 | return 0; | |
2457 | ||
2458 | drop: | |
2459 | dev_kfree_skb_any(skb); | |
2460 | mgp->stats.tx_dropped += 1; | |
2461 | return 0; | |
2462 | } | |
2463 | ||
0da34b6d BG |
2464 | static struct net_device_stats *myri10ge_get_stats(struct net_device *dev) |
2465 | { | |
2466 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
2467 | return &mgp->stats; | |
2468 | } | |
2469 | ||
2470 | static void myri10ge_set_multicast_list(struct net_device *dev) | |
2471 | { | |
85a7ea1b BG |
2472 | struct myri10ge_cmd cmd; |
2473 | struct myri10ge_priv *mgp; | |
2474 | struct dev_mc_list *mc_list; | |
6250223e | 2475 | __be32 data[2] = { 0, 0 }; |
85a7ea1b | 2476 | int err; |
0795af57 | 2477 | DECLARE_MAC_BUF(mac); |
85a7ea1b BG |
2478 | |
2479 | mgp = netdev_priv(dev); | |
0da34b6d BG |
2480 | /* can be called from atomic contexts, |
2481 | * pass 1 to force atomicity in myri10ge_send_cmd() */ | |
85a7ea1b BG |
2482 | myri10ge_change_promisc(mgp, dev->flags & IFF_PROMISC, 1); |
2483 | ||
2484 | /* This firmware is known to not support multicast */ | |
2f76216f | 2485 | if (!mgp->fw_multicast_support) |
85a7ea1b BG |
2486 | return; |
2487 | ||
2488 | /* Disable multicast filtering */ | |
2489 | ||
2490 | err = myri10ge_send_cmd(mgp, MXGEFW_ENABLE_ALLMULTI, &cmd, 1); | |
2491 | if (err != 0) { | |
2492 | printk(KERN_ERR "myri10ge: %s: Failed MXGEFW_ENABLE_ALLMULTI," | |
2493 | " error status: %d\n", dev->name, err); | |
2494 | goto abort; | |
2495 | } | |
2496 | ||
2f76216f | 2497 | if ((dev->flags & IFF_ALLMULTI) || mgp->adopted_rx_filter_bug) { |
85a7ea1b BG |
2498 | /* request to disable multicast filtering, so quit here */ |
2499 | return; | |
2500 | } | |
2501 | ||
2502 | /* Flush the filters */ | |
2503 | ||
2504 | err = myri10ge_send_cmd(mgp, MXGEFW_LEAVE_ALL_MULTICAST_GROUPS, | |
2505 | &cmd, 1); | |
2506 | if (err != 0) { | |
2507 | printk(KERN_ERR | |
2508 | "myri10ge: %s: Failed MXGEFW_LEAVE_ALL_MULTICAST_GROUPS" | |
2509 | ", error status: %d\n", dev->name, err); | |
2510 | goto abort; | |
2511 | } | |
2512 | ||
2513 | /* Walk the multicast list, and add each address */ | |
2514 | for (mc_list = dev->mc_list; mc_list != NULL; mc_list = mc_list->next) { | |
40f6cff5 AV |
2515 | memcpy(data, &mc_list->dmi_addr, 6); |
2516 | cmd.data0 = ntohl(data[0]); | |
2517 | cmd.data1 = ntohl(data[1]); | |
85a7ea1b BG |
2518 | err = myri10ge_send_cmd(mgp, MXGEFW_JOIN_MULTICAST_GROUP, |
2519 | &cmd, 1); | |
2520 | ||
2521 | if (err != 0) { | |
2522 | printk(KERN_ERR "myri10ge: %s: Failed " | |
2523 | "MXGEFW_JOIN_MULTICAST_GROUP, error status:" | |
2524 | "%d\t", dev->name, err); | |
0795af57 JP |
2525 | printk(KERN_ERR "MAC %s\n", |
2526 | print_mac(mac, mc_list->dmi_addr)); | |
85a7ea1b BG |
2527 | goto abort; |
2528 | } | |
2529 | } | |
2530 | /* Enable multicast filtering */ | |
2531 | err = myri10ge_send_cmd(mgp, MXGEFW_DISABLE_ALLMULTI, &cmd, 1); | |
2532 | if (err != 0) { | |
2533 | printk(KERN_ERR "myri10ge: %s: Failed MXGEFW_DISABLE_ALLMULTI," | |
2534 | "error status: %d\n", dev->name, err); | |
2535 | goto abort; | |
2536 | } | |
2537 | ||
2538 | return; | |
2539 | ||
2540 | abort: | |
2541 | return; | |
0da34b6d BG |
2542 | } |
2543 | ||
2544 | static int myri10ge_set_mac_address(struct net_device *dev, void *addr) | |
2545 | { | |
2546 | struct sockaddr *sa = addr; | |
2547 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
2548 | int status; | |
2549 | ||
2550 | if (!is_valid_ether_addr(sa->sa_data)) | |
2551 | return -EADDRNOTAVAIL; | |
2552 | ||
2553 | status = myri10ge_update_mac_address(mgp, sa->sa_data); | |
2554 | if (status != 0) { | |
2555 | printk(KERN_ERR | |
2556 | "myri10ge: %s: changing mac address failed with %d\n", | |
2557 | dev->name, status); | |
2558 | return status; | |
2559 | } | |
2560 | ||
2561 | /* change the dev structure */ | |
2562 | memcpy(dev->dev_addr, sa->sa_data, 6); | |
2563 | return 0; | |
2564 | } | |
2565 | ||
2566 | static int myri10ge_change_mtu(struct net_device *dev, int new_mtu) | |
2567 | { | |
2568 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
2569 | int error = 0; | |
2570 | ||
2571 | if ((new_mtu < 68) || (ETH_HLEN + new_mtu > MYRI10GE_MAX_ETHER_MTU)) { | |
2572 | printk(KERN_ERR "myri10ge: %s: new mtu (%d) is not valid\n", | |
2573 | dev->name, new_mtu); | |
2574 | return -EINVAL; | |
2575 | } | |
2576 | printk(KERN_INFO "%s: changing mtu from %d to %d\n", | |
2577 | dev->name, dev->mtu, new_mtu); | |
2578 | if (mgp->running) { | |
2579 | /* if we change the mtu on an active device, we must | |
2580 | * reset the device so the firmware sees the change */ | |
2581 | myri10ge_close(dev); | |
2582 | dev->mtu = new_mtu; | |
2583 | myri10ge_open(dev); | |
2584 | } else | |
2585 | dev->mtu = new_mtu; | |
2586 | ||
2587 | return error; | |
2588 | } | |
2589 | ||
2590 | /* | |
2591 | * Enable ECRC to align PCI-E Completion packets on an 8-byte boundary. | |
2592 | * Only do it if the bridge is a root port since we don't want to disturb | |
2593 | * any other device, except if forced with myri10ge_ecrc_enable > 1. | |
2594 | */ | |
2595 | ||
0da34b6d BG |
2596 | static void myri10ge_enable_ecrc(struct myri10ge_priv *mgp) |
2597 | { | |
2598 | struct pci_dev *bridge = mgp->pdev->bus->self; | |
2599 | struct device *dev = &mgp->pdev->dev; | |
2600 | unsigned cap; | |
2601 | unsigned err_cap; | |
2602 | u16 val; | |
2603 | u8 ext_type; | |
2604 | int ret; | |
2605 | ||
2606 | if (!myri10ge_ecrc_enable || !bridge) | |
2607 | return; | |
2608 | ||
2609 | /* check that the bridge is a root port */ | |
2610 | cap = pci_find_capability(bridge, PCI_CAP_ID_EXP); | |
2611 | pci_read_config_word(bridge, cap + PCI_CAP_FLAGS, &val); | |
2612 | ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4; | |
2613 | if (ext_type != PCI_EXP_TYPE_ROOT_PORT) { | |
2614 | if (myri10ge_ecrc_enable > 1) { | |
2615 | struct pci_dev *old_bridge = bridge; | |
2616 | ||
2617 | /* Walk the hierarchy up to the root port | |
2618 | * where ECRC has to be enabled */ | |
2619 | do { | |
2620 | bridge = bridge->bus->self; | |
2621 | if (!bridge) { | |
2622 | dev_err(dev, | |
2623 | "Failed to find root port" | |
2624 | " to force ECRC\n"); | |
2625 | return; | |
2626 | } | |
2627 | cap = | |
2628 | pci_find_capability(bridge, PCI_CAP_ID_EXP); | |
2629 | pci_read_config_word(bridge, | |
2630 | cap + PCI_CAP_FLAGS, &val); | |
2631 | ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4; | |
2632 | } while (ext_type != PCI_EXP_TYPE_ROOT_PORT); | |
2633 | ||
2634 | dev_info(dev, | |
2635 | "Forcing ECRC on non-root port %s" | |
2636 | " (enabling on root port %s)\n", | |
2637 | pci_name(old_bridge), pci_name(bridge)); | |
2638 | } else { | |
2639 | dev_err(dev, | |
2640 | "Not enabling ECRC on non-root port %s\n", | |
2641 | pci_name(bridge)); | |
2642 | return; | |
2643 | } | |
2644 | } | |
2645 | ||
2646 | cap = pci_find_ext_capability(bridge, PCI_EXT_CAP_ID_ERR); | |
0da34b6d BG |
2647 | if (!cap) |
2648 | return; | |
2649 | ||
2650 | ret = pci_read_config_dword(bridge, cap + PCI_ERR_CAP, &err_cap); | |
2651 | if (ret) { | |
2652 | dev_err(dev, "failed reading ext-conf-space of %s\n", | |
2653 | pci_name(bridge)); | |
2654 | dev_err(dev, "\t pci=nommconf in use? " | |
2655 | "or buggy/incomplete/absent ACPI MCFG attr?\n"); | |
2656 | return; | |
2657 | } | |
2658 | if (!(err_cap & PCI_ERR_CAP_ECRC_GENC)) | |
2659 | return; | |
2660 | ||
2661 | err_cap |= PCI_ERR_CAP_ECRC_GENE; | |
2662 | pci_write_config_dword(bridge, cap + PCI_ERR_CAP, err_cap); | |
2663 | dev_info(dev, "Enabled ECRC on upstream bridge %s\n", pci_name(bridge)); | |
0da34b6d BG |
2664 | } |
2665 | ||
2666 | /* | |
2667 | * The Lanai Z8E PCI-E interface achieves higher Read-DMA throughput | |
2668 | * when the PCI-E Completion packets are aligned on an 8-byte | |
2669 | * boundary. Some PCI-E chip sets always align Completion packets; on | |
2670 | * the ones that do not, the alignment can be enforced by enabling | |
2671 | * ECRC generation (if supported). | |
2672 | * | |
2673 | * When PCI-E Completion packets are not aligned, it is actually more | |
2674 | * efficient to limit Read-DMA transactions to 2KB, rather than 4KB. | |
2675 | * | |
2676 | * If the driver can neither enable ECRC nor verify that it has | |
2677 | * already been enabled, then it must use a firmware image which works | |
2678 | * around unaligned completion packets (myri10ge_ethp_z8e.dat), and it | |
2679 | * should also ensure that it never gives the device a Read-DMA which is | |
2680 | * larger than 2KB by setting the tx.boundary to 2KB. If ECRC is | |
2681 | * enabled, then the driver should use the aligned (myri10ge_eth_z8e.dat) | |
2682 | * firmware image, and set tx.boundary to 4KB. | |
2683 | */ | |
2684 | ||
5443e9ea | 2685 | static void myri10ge_firmware_probe(struct myri10ge_priv *mgp) |
0da34b6d | 2686 | { |
5443e9ea BG |
2687 | struct pci_dev *pdev = mgp->pdev; |
2688 | struct device *dev = &pdev->dev; | |
302d242c | 2689 | int status; |
0da34b6d | 2690 | |
5443e9ea BG |
2691 | mgp->tx.boundary = 4096; |
2692 | /* | |
2693 | * Verify the max read request size was set to 4KB | |
2694 | * before trying the test with 4KB. | |
2695 | */ | |
302d242c BG |
2696 | status = pcie_get_readrq(pdev); |
2697 | if (status < 0) { | |
5443e9ea BG |
2698 | dev_err(dev, "Couldn't read max read req size: %d\n", status); |
2699 | goto abort; | |
2700 | } | |
302d242c BG |
2701 | if (status != 4096) { |
2702 | dev_warn(dev, "Max Read Request size != 4096 (%d)\n", status); | |
5443e9ea BG |
2703 | mgp->tx.boundary = 2048; |
2704 | } | |
2705 | /* | |
2706 | * load the optimized firmware (which assumes aligned PCIe | |
2707 | * completions) in order to see if it works on this host. | |
2708 | */ | |
2709 | mgp->fw_name = myri10ge_fw_aligned; | |
2710 | status = myri10ge_load_firmware(mgp); | |
2711 | if (status != 0) { | |
2712 | goto abort; | |
2713 | } | |
2714 | ||
2715 | /* | |
2716 | * Enable ECRC if possible | |
2717 | */ | |
2718 | myri10ge_enable_ecrc(mgp); | |
2719 | ||
2720 | /* | |
2721 | * Run a DMA test which watches for unaligned completions and | |
2722 | * aborts on the first one seen. | |
2723 | */ | |
2724 | ||
2725 | status = myri10ge_dma_test(mgp, MXGEFW_CMD_UNALIGNED_TEST); | |
2726 | if (status == 0) | |
2727 | return; /* keep the aligned firmware */ | |
2728 | ||
2729 | if (status != -E2BIG) | |
2730 | dev_warn(dev, "DMA test failed: %d\n", status); | |
2731 | if (status == -ENOSYS) | |
2732 | dev_warn(dev, "Falling back to ethp! " | |
2733 | "Please install up to date fw\n"); | |
2734 | abort: | |
2735 | /* fall back to using the unaligned firmware */ | |
0da34b6d BG |
2736 | mgp->tx.boundary = 2048; |
2737 | mgp->fw_name = myri10ge_fw_unaligned; | |
2738 | ||
5443e9ea BG |
2739 | } |
2740 | ||
2741 | static void myri10ge_select_firmware(struct myri10ge_priv *mgp) | |
2742 | { | |
0da34b6d | 2743 | if (myri10ge_force_firmware == 0) { |
ce7f9368 BG |
2744 | int link_width, exp_cap; |
2745 | u16 lnk; | |
2746 | ||
2747 | exp_cap = pci_find_capability(mgp->pdev, PCI_CAP_ID_EXP); | |
2748 | pci_read_config_word(mgp->pdev, exp_cap + PCI_EXP_LNKSTA, &lnk); | |
2749 | link_width = (lnk >> 4) & 0x3f; | |
2750 | ||
ce7f9368 BG |
2751 | /* Check to see if Link is less than 8 or if the |
2752 | * upstream bridge is known to provide aligned | |
2753 | * completions */ | |
2754 | if (link_width < 8) { | |
2755 | dev_info(&mgp->pdev->dev, "PCIE x%d Link\n", | |
2756 | link_width); | |
2757 | mgp->tx.boundary = 4096; | |
2758 | mgp->fw_name = myri10ge_fw_aligned; | |
5443e9ea BG |
2759 | } else { |
2760 | myri10ge_firmware_probe(mgp); | |
0da34b6d BG |
2761 | } |
2762 | } else { | |
2763 | if (myri10ge_force_firmware == 1) { | |
2764 | dev_info(&mgp->pdev->dev, | |
2765 | "Assuming aligned completions (forced)\n"); | |
2766 | mgp->tx.boundary = 4096; | |
2767 | mgp->fw_name = myri10ge_fw_aligned; | |
2768 | } else { | |
2769 | dev_info(&mgp->pdev->dev, | |
2770 | "Assuming unaligned completions (forced)\n"); | |
2771 | mgp->tx.boundary = 2048; | |
2772 | mgp->fw_name = myri10ge_fw_unaligned; | |
2773 | } | |
2774 | } | |
2775 | if (myri10ge_fw_name != NULL) { | |
2776 | dev_info(&mgp->pdev->dev, "overriding firmware to %s\n", | |
2777 | myri10ge_fw_name); | |
2778 | mgp->fw_name = myri10ge_fw_name; | |
2779 | } | |
2780 | } | |
2781 | ||
0da34b6d | 2782 | #ifdef CONFIG_PM |
0da34b6d BG |
2783 | static int myri10ge_suspend(struct pci_dev *pdev, pm_message_t state) |
2784 | { | |
2785 | struct myri10ge_priv *mgp; | |
2786 | struct net_device *netdev; | |
2787 | ||
2788 | mgp = pci_get_drvdata(pdev); | |
2789 | if (mgp == NULL) | |
2790 | return -EINVAL; | |
2791 | netdev = mgp->dev; | |
2792 | ||
2793 | netif_device_detach(netdev); | |
2794 | if (netif_running(netdev)) { | |
2795 | printk(KERN_INFO "myri10ge: closing %s\n", netdev->name); | |
2796 | rtnl_lock(); | |
2797 | myri10ge_close(netdev); | |
2798 | rtnl_unlock(); | |
2799 | } | |
2800 | myri10ge_dummy_rdma(mgp, 0); | |
83f6e152 | 2801 | pci_save_state(pdev); |
0da34b6d | 2802 | pci_disable_device(pdev); |
1a63e846 BG |
2803 | |
2804 | return pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
0da34b6d BG |
2805 | } |
2806 | ||
2807 | static int myri10ge_resume(struct pci_dev *pdev) | |
2808 | { | |
2809 | struct myri10ge_priv *mgp; | |
2810 | struct net_device *netdev; | |
2811 | int status; | |
2812 | u16 vendor; | |
2813 | ||
2814 | mgp = pci_get_drvdata(pdev); | |
2815 | if (mgp == NULL) | |
2816 | return -EINVAL; | |
2817 | netdev = mgp->dev; | |
2818 | pci_set_power_state(pdev, 0); /* zeros conf space as a side effect */ | |
2819 | msleep(5); /* give card time to respond */ | |
2820 | pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor); | |
2821 | if (vendor == 0xffff) { | |
2822 | printk(KERN_ERR "myri10ge: %s: device disappeared!\n", | |
2823 | mgp->dev->name); | |
2824 | return -EIO; | |
2825 | } | |
83f6e152 | 2826 | |
1a63e846 BG |
2827 | status = pci_restore_state(pdev); |
2828 | if (status) | |
2829 | return status; | |
4c2248cc BG |
2830 | |
2831 | status = pci_enable_device(pdev); | |
1a63e846 | 2832 | if (status) { |
4c2248cc | 2833 | dev_err(&pdev->dev, "failed to enable device\n"); |
1a63e846 | 2834 | return status; |
4c2248cc BG |
2835 | } |
2836 | ||
0da34b6d BG |
2837 | pci_set_master(pdev); |
2838 | ||
0da34b6d | 2839 | myri10ge_reset(mgp); |
013b68bf | 2840 | myri10ge_dummy_rdma(mgp, 1); |
0da34b6d BG |
2841 | |
2842 | /* Save configuration space to be restored if the | |
2843 | * nic resets due to a parity error */ | |
83f6e152 | 2844 | pci_save_state(pdev); |
0da34b6d BG |
2845 | |
2846 | if (netif_running(netdev)) { | |
2847 | rtnl_lock(); | |
df30a740 | 2848 | status = myri10ge_open(netdev); |
0da34b6d | 2849 | rtnl_unlock(); |
df30a740 BG |
2850 | if (status != 0) |
2851 | goto abort_with_enabled; | |
2852 | ||
0da34b6d BG |
2853 | } |
2854 | netif_device_attach(netdev); | |
2855 | ||
2856 | return 0; | |
2857 | ||
4c2248cc BG |
2858 | abort_with_enabled: |
2859 | pci_disable_device(pdev); | |
0da34b6d BG |
2860 | return -EIO; |
2861 | ||
2862 | } | |
0da34b6d BG |
2863 | #endif /* CONFIG_PM */ |
2864 | ||
2865 | static u32 myri10ge_read_reboot(struct myri10ge_priv *mgp) | |
2866 | { | |
2867 | struct pci_dev *pdev = mgp->pdev; | |
2868 | int vs = mgp->vendor_specific_offset; | |
2869 | u32 reboot; | |
2870 | ||
2871 | /*enter read32 mode */ | |
2872 | pci_write_config_byte(pdev, vs + 0x10, 0x3); | |
2873 | ||
2874 | /*read REBOOT_STATUS (0xfffffff0) */ | |
2875 | pci_write_config_dword(pdev, vs + 0x18, 0xfffffff0); | |
2876 | pci_read_config_dword(pdev, vs + 0x14, &reboot); | |
2877 | return reboot; | |
2878 | } | |
2879 | ||
2880 | /* | |
2881 | * This watchdog is used to check whether the board has suffered | |
2882 | * from a parity error and needs to be recovered. | |
2883 | */ | |
c4028958 | 2884 | static void myri10ge_watchdog(struct work_struct *work) |
0da34b6d | 2885 | { |
c4028958 | 2886 | struct myri10ge_priv *mgp = |
6250223e | 2887 | container_of(work, struct myri10ge_priv, watchdog_work); |
0da34b6d BG |
2888 | u32 reboot; |
2889 | int status; | |
2890 | u16 cmd, vendor; | |
2891 | ||
2892 | mgp->watchdog_resets++; | |
2893 | pci_read_config_word(mgp->pdev, PCI_COMMAND, &cmd); | |
2894 | if ((cmd & PCI_COMMAND_MASTER) == 0) { | |
2895 | /* Bus master DMA disabled? Check to see | |
2896 | * if the card rebooted due to a parity error | |
2897 | * For now, just report it */ | |
2898 | reboot = myri10ge_read_reboot(mgp); | |
2899 | printk(KERN_ERR | |
f181137f BG |
2900 | "myri10ge: %s: NIC rebooted (0x%x),%s resetting\n", |
2901 | mgp->dev->name, reboot, | |
2902 | myri10ge_reset_recover ? " " : " not"); | |
2903 | if (myri10ge_reset_recover == 0) | |
2904 | return; | |
2905 | ||
2906 | myri10ge_reset_recover--; | |
2907 | ||
0da34b6d BG |
2908 | /* |
2909 | * A rebooted nic will come back with config space as | |
2910 | * it was after power was applied to PCIe bus. | |
2911 | * Attempt to restore config space which was saved | |
2912 | * when the driver was loaded, or the last time the | |
2913 | * nic was resumed from power saving mode. | |
2914 | */ | |
83f6e152 | 2915 | pci_restore_state(mgp->pdev); |
7adda30c BG |
2916 | |
2917 | /* save state again for accounting reasons */ | |
83f6e152 | 2918 | pci_save_state(mgp->pdev); |
7adda30c | 2919 | |
0da34b6d BG |
2920 | } else { |
2921 | /* if we get back -1's from our slot, perhaps somebody | |
2922 | * powered off our card. Don't try to reset it in | |
2923 | * this case */ | |
2924 | if (cmd == 0xffff) { | |
2925 | pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor); | |
2926 | if (vendor == 0xffff) { | |
2927 | printk(KERN_ERR | |
2928 | "myri10ge: %s: device disappeared!\n", | |
2929 | mgp->dev->name); | |
2930 | return; | |
2931 | } | |
2932 | } | |
2933 | /* Perhaps it is a software error. Try to reset */ | |
2934 | ||
2935 | printk(KERN_ERR "myri10ge: %s: device timeout, resetting\n", | |
2936 | mgp->dev->name); | |
2937 | printk(KERN_INFO "myri10ge: %s: %d %d %d %d %d\n", | |
2938 | mgp->dev->name, mgp->tx.req, mgp->tx.done, | |
2939 | mgp->tx.pkt_start, mgp->tx.pkt_done, | |
2940 | (int)ntohl(mgp->fw_stats->send_done_count)); | |
2941 | msleep(2000); | |
2942 | printk(KERN_INFO "myri10ge: %s: %d %d %d %d %d\n", | |
2943 | mgp->dev->name, mgp->tx.req, mgp->tx.done, | |
2944 | mgp->tx.pkt_start, mgp->tx.pkt_done, | |
2945 | (int)ntohl(mgp->fw_stats->send_done_count)); | |
2946 | } | |
2947 | rtnl_lock(); | |
2948 | myri10ge_close(mgp->dev); | |
2949 | status = myri10ge_load_firmware(mgp); | |
2950 | if (status != 0) | |
2951 | printk(KERN_ERR "myri10ge: %s: failed to load firmware\n", | |
2952 | mgp->dev->name); | |
2953 | else | |
2954 | myri10ge_open(mgp->dev); | |
2955 | rtnl_unlock(); | |
2956 | } | |
2957 | ||
2958 | /* | |
2959 | * We use our own timer routine rather than relying upon | |
2960 | * netdev->tx_timeout because we have a very large hardware transmit | |
2961 | * queue. Due to the large queue, the netdev->tx_timeout function | |
2962 | * cannot detect a NIC with a parity error in a timely fashion if the | |
2963 | * NIC is lightly loaded. | |
2964 | */ | |
2965 | static void myri10ge_watchdog_timer(unsigned long arg) | |
2966 | { | |
2967 | struct myri10ge_priv *mgp; | |
626fda94 | 2968 | u32 rx_pause_cnt; |
0da34b6d BG |
2969 | |
2970 | mgp = (struct myri10ge_priv *)arg; | |
c7dab99b BG |
2971 | |
2972 | if (mgp->rx_small.watchdog_needed) { | |
2973 | myri10ge_alloc_rx_pages(mgp, &mgp->rx_small, | |
2974 | mgp->small_bytes + MXGEFW_PAD, 1); | |
2975 | if (mgp->rx_small.fill_cnt - mgp->rx_small.cnt >= | |
2976 | myri10ge_fill_thresh) | |
2977 | mgp->rx_small.watchdog_needed = 0; | |
2978 | } | |
2979 | if (mgp->rx_big.watchdog_needed) { | |
2980 | myri10ge_alloc_rx_pages(mgp, &mgp->rx_big, mgp->big_bytes, 1); | |
2981 | if (mgp->rx_big.fill_cnt - mgp->rx_big.cnt >= | |
2982 | myri10ge_fill_thresh) | |
2983 | mgp->rx_big.watchdog_needed = 0; | |
2984 | } | |
626fda94 | 2985 | rx_pause_cnt = ntohl(mgp->fw_stats->dropped_pause); |
c7dab99b | 2986 | |
0da34b6d | 2987 | if (mgp->tx.req != mgp->tx.done && |
c54772e7 | 2988 | mgp->tx.done == mgp->watchdog_tx_done && |
626fda94 | 2989 | mgp->watchdog_tx_req != mgp->watchdog_tx_done) { |
0da34b6d | 2990 | /* nic seems like it might be stuck.. */ |
626fda94 BG |
2991 | if (rx_pause_cnt != mgp->watchdog_pause) { |
2992 | if (net_ratelimit()) | |
2993 | printk(KERN_WARNING "myri10ge %s:" | |
2994 | "TX paused, check link partner\n", | |
2995 | mgp->dev->name); | |
2996 | } else { | |
2997 | schedule_work(&mgp->watchdog_work); | |
2998 | return; | |
2999 | } | |
3000 | } | |
3001 | /* rearm timer */ | |
3002 | mod_timer(&mgp->watchdog_timer, | |
3003 | jiffies + myri10ge_watchdog_timeout * HZ); | |
0da34b6d | 3004 | mgp->watchdog_tx_done = mgp->tx.done; |
c54772e7 | 3005 | mgp->watchdog_tx_req = mgp->tx.req; |
626fda94 | 3006 | mgp->watchdog_pause = rx_pause_cnt; |
0da34b6d BG |
3007 | } |
3008 | ||
3009 | static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
3010 | { | |
3011 | struct net_device *netdev; | |
3012 | struct myri10ge_priv *mgp; | |
3013 | struct device *dev = &pdev->dev; | |
3014 | size_t bytes; | |
3015 | int i; | |
3016 | int status = -ENXIO; | |
0da34b6d | 3017 | int dac_enabled; |
0da34b6d BG |
3018 | |
3019 | netdev = alloc_etherdev(sizeof(*mgp)); | |
3020 | if (netdev == NULL) { | |
3021 | dev_err(dev, "Could not allocate ethernet device\n"); | |
3022 | return -ENOMEM; | |
3023 | } | |
3024 | ||
b245fb67 MH |
3025 | SET_NETDEV_DEV(netdev, &pdev->dev); |
3026 | ||
0da34b6d | 3027 | mgp = netdev_priv(netdev); |
0da34b6d | 3028 | mgp->dev = netdev; |
e636b2ea | 3029 | netif_napi_add(netdev, &mgp->napi, myri10ge_poll, myri10ge_napi_weight); |
0da34b6d BG |
3030 | mgp->pdev = pdev; |
3031 | mgp->csum_flag = MXGEFW_FLAGS_CKSUM; | |
3032 | mgp->pause = myri10ge_flow_control; | |
3033 | mgp->intr_coal_delay = myri10ge_intr_coal_delay; | |
c58ac5ca | 3034 | mgp->msg_enable = netif_msg_init(myri10ge_debug, MYRI10GE_MSG_DEFAULT); |
0da34b6d BG |
3035 | init_waitqueue_head(&mgp->down_wq); |
3036 | ||
3037 | if (pci_enable_device(pdev)) { | |
3038 | dev_err(&pdev->dev, "pci_enable_device call failed\n"); | |
3039 | status = -ENODEV; | |
3040 | goto abort_with_netdev; | |
3041 | } | |
0da34b6d BG |
3042 | |
3043 | /* Find the vendor-specific cap so we can check | |
3044 | * the reboot register later on */ | |
3045 | mgp->vendor_specific_offset | |
3046 | = pci_find_capability(pdev, PCI_CAP_ID_VNDR); | |
3047 | ||
3048 | /* Set our max read request to 4KB */ | |
302d242c | 3049 | status = pcie_set_readrq(pdev, 4096); |
0da34b6d BG |
3050 | if (status != 0) { |
3051 | dev_err(&pdev->dev, "Error %d writing PCI_EXP_DEVCTL\n", | |
3052 | status); | |
3053 | goto abort_with_netdev; | |
3054 | } | |
3055 | ||
3056 | pci_set_master(pdev); | |
3057 | dac_enabled = 1; | |
3058 | status = pci_set_dma_mask(pdev, DMA_64BIT_MASK); | |
3059 | if (status != 0) { | |
3060 | dac_enabled = 0; | |
3061 | dev_err(&pdev->dev, | |
898eb71c JP |
3062 | "64-bit pci address mask was refused, " |
3063 | "trying 32-bit\n"); | |
0da34b6d BG |
3064 | status = pci_set_dma_mask(pdev, DMA_32BIT_MASK); |
3065 | } | |
3066 | if (status != 0) { | |
3067 | dev_err(&pdev->dev, "Error %d setting DMA mask\n", status); | |
3068 | goto abort_with_netdev; | |
3069 | } | |
b10c0668 BG |
3070 | mgp->cmd = dma_alloc_coherent(&pdev->dev, sizeof(*mgp->cmd), |
3071 | &mgp->cmd_bus, GFP_KERNEL); | |
0da34b6d BG |
3072 | if (mgp->cmd == NULL) |
3073 | goto abort_with_netdev; | |
3074 | ||
b10c0668 BG |
3075 | mgp->fw_stats = dma_alloc_coherent(&pdev->dev, sizeof(*mgp->fw_stats), |
3076 | &mgp->fw_stats_bus, GFP_KERNEL); | |
0da34b6d BG |
3077 | if (mgp->fw_stats == NULL) |
3078 | goto abort_with_cmd; | |
3079 | ||
3080 | mgp->board_span = pci_resource_len(pdev, 0); | |
3081 | mgp->iomem_base = pci_resource_start(pdev, 0); | |
3082 | mgp->mtrr = -1; | |
276e26c3 | 3083 | mgp->wc_enabled = 0; |
0da34b6d BG |
3084 | #ifdef CONFIG_MTRR |
3085 | mgp->mtrr = mtrr_add(mgp->iomem_base, mgp->board_span, | |
3086 | MTRR_TYPE_WRCOMB, 1); | |
276e26c3 BG |
3087 | if (mgp->mtrr >= 0) |
3088 | mgp->wc_enabled = 1; | |
0da34b6d BG |
3089 | #endif |
3090 | /* Hack. need to get rid of these magic numbers */ | |
3091 | mgp->sram_size = | |
3092 | 2 * 1024 * 1024 - (2 * (48 * 1024) + (32 * 1024)) - 0x100; | |
3093 | if (mgp->sram_size > mgp->board_span) { | |
3094 | dev_err(&pdev->dev, "board span %ld bytes too small\n", | |
3095 | mgp->board_span); | |
3096 | goto abort_with_wc; | |
3097 | } | |
3098 | mgp->sram = ioremap(mgp->iomem_base, mgp->board_span); | |
3099 | if (mgp->sram == NULL) { | |
3100 | dev_err(&pdev->dev, "ioremap failed for %ld bytes at 0x%lx\n", | |
3101 | mgp->board_span, mgp->iomem_base); | |
3102 | status = -ENXIO; | |
3103 | goto abort_with_wc; | |
3104 | } | |
3105 | memcpy_fromio(mgp->eeprom_strings, | |
3106 | mgp->sram + mgp->sram_size - MYRI10GE_EEPROM_STRINGS_SIZE, | |
3107 | MYRI10GE_EEPROM_STRINGS_SIZE); | |
3108 | memset(mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE - 2, 0, 2); | |
3109 | status = myri10ge_read_mac_addr(mgp); | |
3110 | if (status) | |
3111 | goto abort_with_ioremap; | |
3112 | ||
3113 | for (i = 0; i < ETH_ALEN; i++) | |
3114 | netdev->dev_addr[i] = mgp->mac_addr[i]; | |
3115 | ||
3116 | /* allocate rx done ring */ | |
3117 | bytes = myri10ge_max_intr_slots * sizeof(*mgp->rx_done.entry); | |
b10c0668 BG |
3118 | mgp->rx_done.entry = dma_alloc_coherent(&pdev->dev, bytes, |
3119 | &mgp->rx_done.bus, GFP_KERNEL); | |
0da34b6d BG |
3120 | if (mgp->rx_done.entry == NULL) |
3121 | goto abort_with_ioremap; | |
3122 | memset(mgp->rx_done.entry, 0, bytes); | |
3123 | ||
5443e9ea BG |
3124 | myri10ge_select_firmware(mgp); |
3125 | ||
0da34b6d BG |
3126 | status = myri10ge_load_firmware(mgp); |
3127 | if (status != 0) { | |
3128 | dev_err(&pdev->dev, "failed to load firmware\n"); | |
3129 | goto abort_with_rx_done; | |
3130 | } | |
3131 | ||
3132 | status = myri10ge_reset(mgp); | |
3133 | if (status != 0) { | |
3134 | dev_err(&pdev->dev, "failed reset\n"); | |
3135 | goto abort_with_firmware; | |
3136 | } | |
3137 | ||
0da34b6d BG |
3138 | pci_set_drvdata(pdev, mgp); |
3139 | if ((myri10ge_initial_mtu + ETH_HLEN) > MYRI10GE_MAX_ETHER_MTU) | |
3140 | myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN; | |
3141 | if ((myri10ge_initial_mtu + ETH_HLEN) < 68) | |
3142 | myri10ge_initial_mtu = 68; | |
3143 | netdev->mtu = myri10ge_initial_mtu; | |
3144 | netdev->open = myri10ge_open; | |
3145 | netdev->stop = myri10ge_close; | |
3146 | netdev->hard_start_xmit = myri10ge_xmit; | |
3147 | netdev->get_stats = myri10ge_get_stats; | |
3148 | netdev->base_addr = mgp->iomem_base; | |
0da34b6d BG |
3149 | netdev->change_mtu = myri10ge_change_mtu; |
3150 | netdev->set_multicast_list = myri10ge_set_multicast_list; | |
3151 | netdev->set_mac_address = myri10ge_set_mac_address; | |
4f93fde0 | 3152 | netdev->features = mgp->features; |
0da34b6d BG |
3153 | if (dac_enabled) |
3154 | netdev->features |= NETIF_F_HIGHDMA; | |
0da34b6d | 3155 | |
21d05db1 BG |
3156 | /* make sure we can get an irq, and that MSI can be |
3157 | * setup (if available). Also ensure netdev->irq | |
3158 | * is set to correct value if MSI is enabled */ | |
3159 | status = myri10ge_request_irq(mgp); | |
3160 | if (status != 0) | |
3161 | goto abort_with_firmware; | |
3162 | netdev->irq = pdev->irq; | |
3163 | myri10ge_free_irq(mgp); | |
3164 | ||
0da34b6d BG |
3165 | /* Save configuration space to be restored if the |
3166 | * nic resets due to a parity error */ | |
83f6e152 | 3167 | pci_save_state(pdev); |
0da34b6d BG |
3168 | |
3169 | /* Setup the watchdog timer */ | |
3170 | setup_timer(&mgp->watchdog_timer, myri10ge_watchdog_timer, | |
3171 | (unsigned long)mgp); | |
3172 | ||
3173 | SET_ETHTOOL_OPS(netdev, &myri10ge_ethtool_ops); | |
c4028958 | 3174 | INIT_WORK(&mgp->watchdog_work, myri10ge_watchdog); |
0da34b6d BG |
3175 | status = register_netdev(netdev); |
3176 | if (status != 0) { | |
3177 | dev_err(&pdev->dev, "register_netdev failed: %d\n", status); | |
7adda30c | 3178 | goto abort_with_state; |
0da34b6d | 3179 | } |
21d05db1 BG |
3180 | dev_info(dev, "%s IRQ %d, tx bndry %d, fw %s, WC %s\n", |
3181 | (mgp->msi_enabled ? "MSI" : "xPIC"), | |
3182 | netdev->irq, mgp->tx.boundary, mgp->fw_name, | |
276e26c3 | 3183 | (mgp->wc_enabled ? "Enabled" : "Disabled")); |
0da34b6d BG |
3184 | |
3185 | return 0; | |
3186 | ||
7adda30c | 3187 | abort_with_state: |
83f6e152 | 3188 | pci_restore_state(pdev); |
0da34b6d BG |
3189 | |
3190 | abort_with_firmware: | |
3191 | myri10ge_dummy_rdma(mgp, 0); | |
3192 | ||
3193 | abort_with_rx_done: | |
3194 | bytes = myri10ge_max_intr_slots * sizeof(*mgp->rx_done.entry); | |
b10c0668 BG |
3195 | dma_free_coherent(&pdev->dev, bytes, |
3196 | mgp->rx_done.entry, mgp->rx_done.bus); | |
0da34b6d BG |
3197 | |
3198 | abort_with_ioremap: | |
3199 | iounmap(mgp->sram); | |
3200 | ||
3201 | abort_with_wc: | |
3202 | #ifdef CONFIG_MTRR | |
3203 | if (mgp->mtrr >= 0) | |
3204 | mtrr_del(mgp->mtrr, mgp->iomem_base, mgp->board_span); | |
3205 | #endif | |
b10c0668 BG |
3206 | dma_free_coherent(&pdev->dev, sizeof(*mgp->fw_stats), |
3207 | mgp->fw_stats, mgp->fw_stats_bus); | |
0da34b6d BG |
3208 | |
3209 | abort_with_cmd: | |
b10c0668 BG |
3210 | dma_free_coherent(&pdev->dev, sizeof(*mgp->cmd), |
3211 | mgp->cmd, mgp->cmd_bus); | |
0da34b6d BG |
3212 | |
3213 | abort_with_netdev: | |
3214 | ||
3215 | free_netdev(netdev); | |
3216 | return status; | |
3217 | } | |
3218 | ||
3219 | /* | |
3220 | * myri10ge_remove | |
3221 | * | |
3222 | * Does what is necessary to shutdown one Myrinet device. Called | |
3223 | * once for each Myrinet card by the kernel when a module is | |
3224 | * unloaded. | |
3225 | */ | |
3226 | static void myri10ge_remove(struct pci_dev *pdev) | |
3227 | { | |
3228 | struct myri10ge_priv *mgp; | |
3229 | struct net_device *netdev; | |
3230 | size_t bytes; | |
3231 | ||
3232 | mgp = pci_get_drvdata(pdev); | |
3233 | if (mgp == NULL) | |
3234 | return; | |
3235 | ||
3236 | flush_scheduled_work(); | |
3237 | netdev = mgp->dev; | |
3238 | unregister_netdev(netdev); | |
0da34b6d BG |
3239 | |
3240 | myri10ge_dummy_rdma(mgp, 0); | |
3241 | ||
7adda30c | 3242 | /* avoid a memory leak */ |
83f6e152 | 3243 | pci_restore_state(pdev); |
7adda30c | 3244 | |
0da34b6d | 3245 | bytes = myri10ge_max_intr_slots * sizeof(*mgp->rx_done.entry); |
b10c0668 BG |
3246 | dma_free_coherent(&pdev->dev, bytes, |
3247 | mgp->rx_done.entry, mgp->rx_done.bus); | |
0da34b6d BG |
3248 | |
3249 | iounmap(mgp->sram); | |
3250 | ||
3251 | #ifdef CONFIG_MTRR | |
3252 | if (mgp->mtrr >= 0) | |
3253 | mtrr_del(mgp->mtrr, mgp->iomem_base, mgp->board_span); | |
3254 | #endif | |
b10c0668 BG |
3255 | dma_free_coherent(&pdev->dev, sizeof(*mgp->fw_stats), |
3256 | mgp->fw_stats, mgp->fw_stats_bus); | |
0da34b6d | 3257 | |
b10c0668 BG |
3258 | dma_free_coherent(&pdev->dev, sizeof(*mgp->cmd), |
3259 | mgp->cmd, mgp->cmd_bus); | |
0da34b6d BG |
3260 | |
3261 | free_netdev(netdev); | |
3262 | pci_set_drvdata(pdev, NULL); | |
3263 | } | |
3264 | ||
b10c0668 | 3265 | #define PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E 0x0008 |
a07bc1ff | 3266 | #define PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E_9 0x0009 |
0da34b6d BG |
3267 | |
3268 | static struct pci_device_id myri10ge_pci_tbl[] = { | |
b10c0668 | 3269 | {PCI_DEVICE(PCI_VENDOR_ID_MYRICOM, PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E)}, |
a07bc1ff BG |
3270 | {PCI_DEVICE |
3271 | (PCI_VENDOR_ID_MYRICOM, PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E_9)}, | |
0da34b6d BG |
3272 | {0}, |
3273 | }; | |
3274 | ||
3275 | static struct pci_driver myri10ge_driver = { | |
3276 | .name = "myri10ge", | |
3277 | .probe = myri10ge_probe, | |
3278 | .remove = myri10ge_remove, | |
3279 | .id_table = myri10ge_pci_tbl, | |
3280 | #ifdef CONFIG_PM | |
3281 | .suspend = myri10ge_suspend, | |
3282 | .resume = myri10ge_resume, | |
3283 | #endif | |
3284 | }; | |
3285 | ||
3286 | static __init int myri10ge_init_module(void) | |
3287 | { | |
3288 | printk(KERN_INFO "%s: Version %s\n", myri10ge_driver.name, | |
3289 | MYRI10GE_VERSION_STR); | |
3290 | return pci_register_driver(&myri10ge_driver); | |
3291 | } | |
3292 | ||
3293 | module_init(myri10ge_init_module); | |
3294 | ||
3295 | static __exit void myri10ge_cleanup_module(void) | |
3296 | { | |
3297 | pci_unregister_driver(&myri10ge_driver); | |
3298 | } | |
3299 | ||
3300 | module_exit(myri10ge_cleanup_module); |