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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> |
981813d8 | 52 | #include <linux/dca.h> |
0da34b6d BG |
53 | #include <linux/ip.h> |
54 | #include <linux/inet.h> | |
55 | #include <linux/in.h> | |
56 | #include <linux/ethtool.h> | |
57 | #include <linux/firmware.h> | |
58 | #include <linux/delay.h> | |
0da34b6d BG |
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 | ||
0623807a | 78 | #define MYRI10GE_VERSION_STR "1.4.3-1.358" |
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 */ | |
0da34b6d BG |
127 | struct mcp_kreq_ether_recv *shadow; /* host shadow of recv ring */ |
128 | struct myri10ge_rx_buffer_state *info; | |
dd50f336 BG |
129 | struct page *page; |
130 | dma_addr_t bus; | |
131 | int page_offset; | |
0da34b6d | 132 | int cnt; |
dd50f336 | 133 | int fill_cnt; |
0da34b6d BG |
134 | int alloc_fail; |
135 | int mask; /* number of rx slots -1 */ | |
dd50f336 | 136 | int watchdog_needed; |
0da34b6d BG |
137 | }; |
138 | ||
139 | struct myri10ge_tx_buf { | |
140 | struct mcp_kreq_ether_send __iomem *lanai; /* lanai ptr for sendq */ | |
0da34b6d BG |
141 | struct mcp_kreq_ether_send *req_list; /* host shadow of sendq */ |
142 | char *req_bytes; | |
143 | struct myri10ge_tx_buffer_state *info; | |
144 | int mask; /* number of transmit slots -1 */ | |
0da34b6d BG |
145 | int req ____cacheline_aligned; /* transmit slots submitted */ |
146 | int pkt_start; /* packets started */ | |
b53bef84 BG |
147 | int stop_queue; |
148 | int linearized; | |
0da34b6d BG |
149 | int done ____cacheline_aligned; /* transmit slots completed */ |
150 | int pkt_done; /* packets completed */ | |
b53bef84 | 151 | int wake_queue; |
0da34b6d BG |
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 | ||
b53bef84 BG |
163 | struct myri10ge_slice_netstats { |
164 | unsigned long rx_packets; | |
165 | unsigned long tx_packets; | |
166 | unsigned long rx_bytes; | |
167 | unsigned long tx_bytes; | |
168 | unsigned long rx_dropped; | |
169 | unsigned long tx_dropped; | |
170 | }; | |
171 | ||
172 | struct myri10ge_slice_state { | |
0da34b6d BG |
173 | struct myri10ge_tx_buf tx; /* transmit ring */ |
174 | struct myri10ge_rx_buf rx_small; | |
175 | struct myri10ge_rx_buf rx_big; | |
176 | struct myri10ge_rx_done rx_done; | |
b53bef84 BG |
177 | struct net_device *dev; |
178 | struct napi_struct napi; | |
179 | struct myri10ge_priv *mgp; | |
180 | struct myri10ge_slice_netstats stats; | |
181 | __be32 __iomem *irq_claim; | |
182 | struct mcp_irq_data *fw_stats; | |
183 | dma_addr_t fw_stats_bus; | |
184 | int watchdog_tx_done; | |
185 | int watchdog_tx_req; | |
981813d8 BG |
186 | #ifdef CONFIG_DCA |
187 | int cached_dca_tag; | |
188 | int cpu; | |
189 | __be32 __iomem *dca_tag; | |
190 | #endif | |
0dcffac1 | 191 | char irq_desc[32]; |
b53bef84 BG |
192 | }; |
193 | ||
194 | struct myri10ge_priv { | |
0dcffac1 | 195 | struct myri10ge_slice_state *ss; |
b53bef84 | 196 | int tx_boundary; /* boundary transmits cannot cross */ |
0dcffac1 | 197 | int num_slices; |
b53bef84 BG |
198 | int running; /* running? */ |
199 | int csum_flag; /* rx_csums? */ | |
0da34b6d | 200 | int small_bytes; |
dd50f336 | 201 | int big_bytes; |
fa0a90d9 | 202 | int max_intr_slots; |
0da34b6d BG |
203 | struct net_device *dev; |
204 | struct net_device_stats stats; | |
b53bef84 | 205 | spinlock_t stats_lock; |
0da34b6d BG |
206 | u8 __iomem *sram; |
207 | int sram_size; | |
208 | unsigned long board_span; | |
209 | unsigned long iomem_base; | |
40f6cff5 | 210 | __be32 __iomem *irq_deassert; |
0da34b6d BG |
211 | char *mac_addr_string; |
212 | struct mcp_cmd_response *cmd; | |
213 | dma_addr_t cmd_bus; | |
0da34b6d BG |
214 | struct pci_dev *pdev; |
215 | int msi_enabled; | |
0dcffac1 BG |
216 | int msix_enabled; |
217 | struct msix_entry *msix_vectors; | |
981813d8 BG |
218 | #ifdef CONFIG_DCA |
219 | int dca_enabled; | |
220 | #endif | |
66341fff | 221 | u32 link_state; |
0da34b6d BG |
222 | unsigned int rdma_tags_available; |
223 | int intr_coal_delay; | |
40f6cff5 | 224 | __be32 __iomem *intr_coal_delay_ptr; |
0da34b6d | 225 | int mtrr; |
276e26c3 | 226 | int wc_enabled; |
0da34b6d BG |
227 | int down_cnt; |
228 | wait_queue_head_t down_wq; | |
229 | struct work_struct watchdog_work; | |
230 | struct timer_list watchdog_timer; | |
0da34b6d | 231 | int watchdog_resets; |
b53bef84 | 232 | int watchdog_pause; |
0da34b6d BG |
233 | int pause; |
234 | char *fw_name; | |
235 | char eeprom_strings[MYRI10GE_EEPROM_STRINGS_SIZE]; | |
c0bf8801 | 236 | char *product_code_string; |
0da34b6d | 237 | char fw_version[128]; |
9dc6f0e7 BG |
238 | int fw_ver_major; |
239 | int fw_ver_minor; | |
240 | int fw_ver_tiny; | |
241 | int adopted_rx_filter_bug; | |
0da34b6d BG |
242 | u8 mac_addr[6]; /* eeprom mac address */ |
243 | unsigned long serial_number; | |
244 | int vendor_specific_offset; | |
85a7ea1b | 245 | int fw_multicast_support; |
4f93fde0 BG |
246 | unsigned long features; |
247 | u32 max_tso6; | |
0da34b6d BG |
248 | u32 read_dma; |
249 | u32 write_dma; | |
250 | u32 read_write_dma; | |
c58ac5ca BG |
251 | u32 link_changes; |
252 | u32 msg_enable; | |
0da34b6d BG |
253 | }; |
254 | ||
255 | static char *myri10ge_fw_unaligned = "myri10ge_ethp_z8e.dat"; | |
256 | static char *myri10ge_fw_aligned = "myri10ge_eth_z8e.dat"; | |
0dcffac1 BG |
257 | static char *myri10ge_fw_rss_unaligned = "myri10ge_rss_ethp_z8e.dat"; |
258 | static char *myri10ge_fw_rss_aligned = "myri10ge_rss_eth_z8e.dat"; | |
0da34b6d BG |
259 | |
260 | static char *myri10ge_fw_name = NULL; | |
261 | module_param(myri10ge_fw_name, charp, S_IRUGO | S_IWUSR); | |
d1ce3a0f | 262 | MODULE_PARM_DESC(myri10ge_fw_name, "Firmware image name"); |
0da34b6d BG |
263 | |
264 | static int myri10ge_ecrc_enable = 1; | |
265 | module_param(myri10ge_ecrc_enable, int, S_IRUGO); | |
d1ce3a0f | 266 | MODULE_PARM_DESC(myri10ge_ecrc_enable, "Enable Extended CRC on PCI-E"); |
0da34b6d | 267 | |
0da34b6d BG |
268 | static int myri10ge_small_bytes = -1; /* -1 == auto */ |
269 | module_param(myri10ge_small_bytes, int, S_IRUGO | S_IWUSR); | |
d1ce3a0f | 270 | MODULE_PARM_DESC(myri10ge_small_bytes, "Threshold of small packets"); |
0da34b6d BG |
271 | |
272 | static int myri10ge_msi = 1; /* enable msi by default */ | |
3621cec5 | 273 | module_param(myri10ge_msi, int, S_IRUGO | S_IWUSR); |
d1ce3a0f | 274 | MODULE_PARM_DESC(myri10ge_msi, "Enable Message Signalled Interrupts"); |
0da34b6d | 275 | |
f761fae1 | 276 | static int myri10ge_intr_coal_delay = 75; |
0da34b6d | 277 | module_param(myri10ge_intr_coal_delay, int, S_IRUGO); |
d1ce3a0f | 278 | MODULE_PARM_DESC(myri10ge_intr_coal_delay, "Interrupt coalescing delay"); |
0da34b6d BG |
279 | |
280 | static int myri10ge_flow_control = 1; | |
281 | module_param(myri10ge_flow_control, int, S_IRUGO); | |
d1ce3a0f | 282 | MODULE_PARM_DESC(myri10ge_flow_control, "Pause parameter"); |
0da34b6d BG |
283 | |
284 | static int myri10ge_deassert_wait = 1; | |
285 | module_param(myri10ge_deassert_wait, int, S_IRUGO | S_IWUSR); | |
286 | MODULE_PARM_DESC(myri10ge_deassert_wait, | |
d1ce3a0f | 287 | "Wait when deasserting legacy interrupts"); |
0da34b6d BG |
288 | |
289 | static int myri10ge_force_firmware = 0; | |
290 | module_param(myri10ge_force_firmware, int, S_IRUGO); | |
291 | MODULE_PARM_DESC(myri10ge_force_firmware, | |
d1ce3a0f | 292 | "Force firmware to assume aligned completions"); |
0da34b6d | 293 | |
0da34b6d BG |
294 | static int myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN; |
295 | module_param(myri10ge_initial_mtu, int, S_IRUGO); | |
d1ce3a0f | 296 | MODULE_PARM_DESC(myri10ge_initial_mtu, "Initial MTU"); |
0da34b6d BG |
297 | |
298 | static int myri10ge_napi_weight = 64; | |
299 | module_param(myri10ge_napi_weight, int, S_IRUGO); | |
d1ce3a0f | 300 | MODULE_PARM_DESC(myri10ge_napi_weight, "Set NAPI weight"); |
0da34b6d BG |
301 | |
302 | static int myri10ge_watchdog_timeout = 1; | |
303 | module_param(myri10ge_watchdog_timeout, int, S_IRUGO); | |
d1ce3a0f | 304 | MODULE_PARM_DESC(myri10ge_watchdog_timeout, "Set watchdog timeout"); |
0da34b6d BG |
305 | |
306 | static int myri10ge_max_irq_loops = 1048576; | |
307 | module_param(myri10ge_max_irq_loops, int, S_IRUGO); | |
308 | MODULE_PARM_DESC(myri10ge_max_irq_loops, | |
d1ce3a0f | 309 | "Set stuck legacy IRQ detection threshold"); |
0da34b6d | 310 | |
c58ac5ca BG |
311 | #define MYRI10GE_MSG_DEFAULT NETIF_MSG_LINK |
312 | ||
313 | static int myri10ge_debug = -1; /* defaults above */ | |
314 | module_param(myri10ge_debug, int, 0); | |
315 | MODULE_PARM_DESC(myri10ge_debug, "Debug level (0=none,...,16=all)"); | |
316 | ||
1e6e9342 AG |
317 | static int myri10ge_lro = 1; |
318 | module_param(myri10ge_lro, int, S_IRUGO); | |
d1ce3a0f | 319 | MODULE_PARM_DESC(myri10ge_lro, "Enable large receive offload"); |
1e6e9342 AG |
320 | |
321 | static int myri10ge_lro_max_pkts = MYRI10GE_LRO_MAX_PKTS; | |
322 | module_param(myri10ge_lro_max_pkts, int, S_IRUGO); | |
d1ce3a0f BG |
323 | MODULE_PARM_DESC(myri10ge_lro_max_pkts, |
324 | "Number of LRO packets to be aggregated"); | |
1e6e9342 | 325 | |
dd50f336 BG |
326 | static int myri10ge_fill_thresh = 256; |
327 | module_param(myri10ge_fill_thresh, int, S_IRUGO | S_IWUSR); | |
d1ce3a0f | 328 | MODULE_PARM_DESC(myri10ge_fill_thresh, "Number of empty rx slots allowed"); |
dd50f336 | 329 | |
f181137f BG |
330 | static int myri10ge_reset_recover = 1; |
331 | ||
0dcffac1 BG |
332 | static int myri10ge_max_slices = 1; |
333 | module_param(myri10ge_max_slices, int, S_IRUGO); | |
334 | MODULE_PARM_DESC(myri10ge_max_slices, "Max tx/rx queues"); | |
335 | ||
336 | static int myri10ge_rss_hash = MXGEFW_RSS_HASH_TYPE_SRC_PORT; | |
337 | module_param(myri10ge_rss_hash, int, S_IRUGO); | |
338 | MODULE_PARM_DESC(myri10ge_rss_hash, "Type of RSS hashing to do"); | |
339 | ||
981813d8 BG |
340 | static int myri10ge_dca = 1; |
341 | module_param(myri10ge_dca, int, S_IRUGO); | |
342 | MODULE_PARM_DESC(myri10ge_dca, "Enable DCA if possible"); | |
343 | ||
0da34b6d BG |
344 | #define MYRI10GE_FW_OFFSET 1024*1024 |
345 | #define MYRI10GE_HIGHPART_TO_U32(X) \ | |
346 | (sizeof (X) == 8) ? ((u32)((u64)(X) >> 32)) : (0) | |
347 | #define MYRI10GE_LOWPART_TO_U32(X) ((u32)(X)) | |
348 | ||
349 | #define myri10ge_pio_copy(to,from,size) __iowrite64_copy(to,from,size/8) | |
350 | ||
2f76216f | 351 | static void myri10ge_set_multicast_list(struct net_device *dev); |
4f93fde0 | 352 | static int myri10ge_sw_tso(struct sk_buff *skb, struct net_device *dev); |
2f76216f | 353 | |
6250223e | 354 | static inline void put_be32(__be32 val, __be32 __iomem * p) |
40f6cff5 | 355 | { |
6250223e | 356 | __raw_writel((__force __u32) val, (__force void __iomem *)p); |
40f6cff5 AV |
357 | } |
358 | ||
0da34b6d BG |
359 | static int |
360 | myri10ge_send_cmd(struct myri10ge_priv *mgp, u32 cmd, | |
361 | struct myri10ge_cmd *data, int atomic) | |
362 | { | |
363 | struct mcp_cmd *buf; | |
364 | char buf_bytes[sizeof(*buf) + 8]; | |
365 | struct mcp_cmd_response *response = mgp->cmd; | |
e700f9f4 | 366 | char __iomem *cmd_addr = mgp->sram + MXGEFW_ETH_CMD; |
0da34b6d BG |
367 | u32 dma_low, dma_high, result, value; |
368 | int sleep_total = 0; | |
369 | ||
370 | /* ensure buf is aligned to 8 bytes */ | |
371 | buf = (struct mcp_cmd *)ALIGN((unsigned long)buf_bytes, 8); | |
372 | ||
373 | buf->data0 = htonl(data->data0); | |
374 | buf->data1 = htonl(data->data1); | |
375 | buf->data2 = htonl(data->data2); | |
376 | buf->cmd = htonl(cmd); | |
377 | dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus); | |
378 | dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus); | |
379 | ||
380 | buf->response_addr.low = htonl(dma_low); | |
381 | buf->response_addr.high = htonl(dma_high); | |
40f6cff5 | 382 | response->result = htonl(MYRI10GE_NO_RESPONSE_RESULT); |
0da34b6d BG |
383 | mb(); |
384 | myri10ge_pio_copy(cmd_addr, buf, sizeof(*buf)); | |
385 | ||
386 | /* wait up to 15ms. Longest command is the DMA benchmark, | |
387 | * which is capped at 5ms, but runs from a timeout handler | |
388 | * that runs every 7.8ms. So a 15ms timeout leaves us with | |
389 | * a 2.2ms margin | |
390 | */ | |
391 | if (atomic) { | |
392 | /* if atomic is set, do not sleep, | |
393 | * and try to get the completion quickly | |
394 | * (1ms will be enough for those commands) */ | |
395 | for (sleep_total = 0; | |
396 | sleep_total < 1000 | |
40f6cff5 | 397 | && response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT); |
bd2db0cf | 398 | sleep_total += 10) { |
0da34b6d | 399 | udelay(10); |
bd2db0cf BG |
400 | mb(); |
401 | } | |
0da34b6d BG |
402 | } else { |
403 | /* use msleep for most command */ | |
404 | for (sleep_total = 0; | |
405 | sleep_total < 15 | |
40f6cff5 | 406 | && response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT); |
0da34b6d BG |
407 | sleep_total++) |
408 | msleep(1); | |
409 | } | |
410 | ||
411 | result = ntohl(response->result); | |
412 | value = ntohl(response->data); | |
413 | if (result != MYRI10GE_NO_RESPONSE_RESULT) { | |
414 | if (result == 0) { | |
415 | data->data0 = value; | |
416 | return 0; | |
85a7ea1b BG |
417 | } else if (result == MXGEFW_CMD_UNKNOWN) { |
418 | return -ENOSYS; | |
5443e9ea BG |
419 | } else if (result == MXGEFW_CMD_ERROR_UNALIGNED) { |
420 | return -E2BIG; | |
0da34b6d BG |
421 | } else { |
422 | dev_err(&mgp->pdev->dev, | |
423 | "command %d failed, result = %d\n", | |
424 | cmd, result); | |
425 | return -ENXIO; | |
426 | } | |
427 | } | |
428 | ||
429 | dev_err(&mgp->pdev->dev, "command %d timed out, result = %d\n", | |
430 | cmd, result); | |
431 | return -EAGAIN; | |
432 | } | |
433 | ||
434 | /* | |
435 | * The eeprom strings on the lanaiX have the format | |
436 | * SN=x\0 | |
437 | * MAC=x:x:x:x:x:x\0 | |
438 | * PT:ddd mmm xx xx:xx:xx xx\0 | |
439 | * PV:ddd mmm xx xx:xx:xx xx\0 | |
440 | */ | |
441 | static int myri10ge_read_mac_addr(struct myri10ge_priv *mgp) | |
442 | { | |
443 | char *ptr, *limit; | |
444 | int i; | |
445 | ||
446 | ptr = mgp->eeprom_strings; | |
447 | limit = mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE; | |
448 | ||
449 | while (*ptr != '\0' && ptr < limit) { | |
450 | if (memcmp(ptr, "MAC=", 4) == 0) { | |
451 | ptr += 4; | |
452 | mgp->mac_addr_string = ptr; | |
453 | for (i = 0; i < 6; i++) { | |
454 | if ((ptr + 2) > limit) | |
455 | goto abort; | |
456 | mgp->mac_addr[i] = | |
457 | simple_strtoul(ptr, &ptr, 16); | |
458 | ptr += 1; | |
459 | } | |
460 | } | |
c0bf8801 BG |
461 | if (memcmp(ptr, "PC=", 3) == 0) { |
462 | ptr += 3; | |
463 | mgp->product_code_string = ptr; | |
464 | } | |
0da34b6d BG |
465 | if (memcmp((const void *)ptr, "SN=", 3) == 0) { |
466 | ptr += 3; | |
467 | mgp->serial_number = simple_strtoul(ptr, &ptr, 10); | |
468 | } | |
469 | while (ptr < limit && *ptr++) ; | |
470 | } | |
471 | ||
472 | return 0; | |
473 | ||
474 | abort: | |
475 | dev_err(&mgp->pdev->dev, "failed to parse eeprom_strings\n"); | |
476 | return -ENXIO; | |
477 | } | |
478 | ||
479 | /* | |
480 | * Enable or disable periodic RDMAs from the host to make certain | |
481 | * chipsets resend dropped PCIe messages | |
482 | */ | |
483 | ||
484 | static void myri10ge_dummy_rdma(struct myri10ge_priv *mgp, int enable) | |
485 | { | |
486 | char __iomem *submit; | |
f8fd57c1 | 487 | __be32 buf[16] __attribute__ ((__aligned__(8))); |
0da34b6d BG |
488 | u32 dma_low, dma_high; |
489 | int i; | |
490 | ||
491 | /* clear confirmation addr */ | |
492 | mgp->cmd->data = 0; | |
493 | mb(); | |
494 | ||
495 | /* send a rdma command to the PCIe engine, and wait for the | |
496 | * response in the confirmation address. The firmware should | |
497 | * write a -1 there to indicate it is alive and well | |
498 | */ | |
499 | dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus); | |
500 | dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus); | |
501 | ||
502 | buf[0] = htonl(dma_high); /* confirm addr MSW */ | |
503 | buf[1] = htonl(dma_low); /* confirm addr LSW */ | |
40f6cff5 | 504 | buf[2] = MYRI10GE_NO_CONFIRM_DATA; /* confirm data */ |
0da34b6d BG |
505 | buf[3] = htonl(dma_high); /* dummy addr MSW */ |
506 | buf[4] = htonl(dma_low); /* dummy addr LSW */ | |
507 | buf[5] = htonl(enable); /* enable? */ | |
508 | ||
e700f9f4 | 509 | submit = mgp->sram + MXGEFW_BOOT_DUMMY_RDMA; |
0da34b6d BG |
510 | |
511 | myri10ge_pio_copy(submit, &buf, sizeof(buf)); | |
512 | for (i = 0; mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 20; i++) | |
513 | msleep(1); | |
514 | if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA) | |
515 | dev_err(&mgp->pdev->dev, "dummy rdma %s failed\n", | |
516 | (enable ? "enable" : "disable")); | |
517 | } | |
518 | ||
519 | static int | |
520 | myri10ge_validate_firmware(struct myri10ge_priv *mgp, | |
521 | struct mcp_gen_header *hdr) | |
522 | { | |
523 | struct device *dev = &mgp->pdev->dev; | |
0da34b6d BG |
524 | |
525 | /* check firmware type */ | |
526 | if (ntohl(hdr->mcp_type) != MCP_TYPE_ETH) { | |
527 | dev_err(dev, "Bad firmware type: 0x%x\n", ntohl(hdr->mcp_type)); | |
528 | return -EINVAL; | |
529 | } | |
530 | ||
531 | /* save firmware version for ethtool */ | |
532 | strncpy(mgp->fw_version, hdr->version, sizeof(mgp->fw_version)); | |
533 | ||
9dc6f0e7 BG |
534 | sscanf(mgp->fw_version, "%d.%d.%d", &mgp->fw_ver_major, |
535 | &mgp->fw_ver_minor, &mgp->fw_ver_tiny); | |
0da34b6d | 536 | |
9dc6f0e7 BG |
537 | if (!(mgp->fw_ver_major == MXGEFW_VERSION_MAJOR |
538 | && mgp->fw_ver_minor == MXGEFW_VERSION_MINOR)) { | |
0da34b6d BG |
539 | dev_err(dev, "Found firmware version %s\n", mgp->fw_version); |
540 | dev_err(dev, "Driver needs %d.%d\n", MXGEFW_VERSION_MAJOR, | |
541 | MXGEFW_VERSION_MINOR); | |
542 | return -EINVAL; | |
543 | } | |
544 | return 0; | |
545 | } | |
546 | ||
547 | static int myri10ge_load_hotplug_firmware(struct myri10ge_priv *mgp, u32 * size) | |
548 | { | |
549 | unsigned crc, reread_crc; | |
550 | const struct firmware *fw; | |
551 | struct device *dev = &mgp->pdev->dev; | |
b0d31d6b | 552 | unsigned char *fw_readback; |
0da34b6d BG |
553 | struct mcp_gen_header *hdr; |
554 | size_t hdr_offset; | |
555 | int status; | |
e454358a | 556 | unsigned i; |
0da34b6d BG |
557 | |
558 | if ((status = request_firmware(&fw, mgp->fw_name, dev)) < 0) { | |
559 | dev_err(dev, "Unable to load %s firmware image via hotplug\n", | |
560 | mgp->fw_name); | |
561 | status = -EINVAL; | |
562 | goto abort_with_nothing; | |
563 | } | |
564 | ||
565 | /* check size */ | |
566 | ||
567 | if (fw->size >= mgp->sram_size - MYRI10GE_FW_OFFSET || | |
568 | fw->size < MCP_HEADER_PTR_OFFSET + 4) { | |
569 | dev_err(dev, "Firmware size invalid:%d\n", (int)fw->size); | |
570 | status = -EINVAL; | |
571 | goto abort_with_fw; | |
572 | } | |
573 | ||
574 | /* check id */ | |
40f6cff5 | 575 | hdr_offset = ntohl(*(__be32 *) (fw->data + MCP_HEADER_PTR_OFFSET)); |
0da34b6d BG |
576 | if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > fw->size) { |
577 | dev_err(dev, "Bad firmware file\n"); | |
578 | status = -EINVAL; | |
579 | goto abort_with_fw; | |
580 | } | |
581 | hdr = (void *)(fw->data + hdr_offset); | |
582 | ||
583 | status = myri10ge_validate_firmware(mgp, hdr); | |
584 | if (status != 0) | |
585 | goto abort_with_fw; | |
586 | ||
587 | crc = crc32(~0, fw->data, fw->size); | |
e454358a BG |
588 | for (i = 0; i < fw->size; i += 256) { |
589 | myri10ge_pio_copy(mgp->sram + MYRI10GE_FW_OFFSET + i, | |
590 | fw->data + i, | |
591 | min(256U, (unsigned)(fw->size - i))); | |
592 | mb(); | |
593 | readb(mgp->sram); | |
b10c0668 | 594 | } |
b0d31d6b DW |
595 | fw_readback = vmalloc(fw->size); |
596 | if (!fw_readback) { | |
597 | status = -ENOMEM; | |
598 | goto abort_with_fw; | |
599 | } | |
0da34b6d | 600 | /* corruption checking is good for parity recovery and buggy chipset */ |
b0d31d6b DW |
601 | memcpy_fromio(fw_readback, mgp->sram + MYRI10GE_FW_OFFSET, fw->size); |
602 | reread_crc = crc32(~0, fw_readback, fw->size); | |
603 | vfree(fw_readback); | |
0da34b6d BG |
604 | if (crc != reread_crc) { |
605 | dev_err(dev, "CRC failed(fw-len=%u), got 0x%x (expect 0x%x)\n", | |
606 | (unsigned)fw->size, reread_crc, crc); | |
607 | status = -EIO; | |
608 | goto abort_with_fw; | |
609 | } | |
610 | *size = (u32) fw->size; | |
611 | ||
612 | abort_with_fw: | |
613 | release_firmware(fw); | |
614 | ||
615 | abort_with_nothing: | |
616 | return status; | |
617 | } | |
618 | ||
619 | static int myri10ge_adopt_running_firmware(struct myri10ge_priv *mgp) | |
620 | { | |
621 | struct mcp_gen_header *hdr; | |
622 | struct device *dev = &mgp->pdev->dev; | |
623 | const size_t bytes = sizeof(struct mcp_gen_header); | |
624 | size_t hdr_offset; | |
625 | int status; | |
626 | ||
627 | /* find running firmware header */ | |
66341fff | 628 | hdr_offset = swab32(readl(mgp->sram + MCP_HEADER_PTR_OFFSET)); |
0da34b6d BG |
629 | |
630 | if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > mgp->sram_size) { | |
631 | dev_err(dev, "Running firmware has bad header offset (%d)\n", | |
632 | (int)hdr_offset); | |
633 | return -EIO; | |
634 | } | |
635 | ||
636 | /* copy header of running firmware from SRAM to host memory to | |
637 | * validate firmware */ | |
638 | hdr = kmalloc(bytes, GFP_KERNEL); | |
639 | if (hdr == NULL) { | |
640 | dev_err(dev, "could not malloc firmware hdr\n"); | |
641 | return -ENOMEM; | |
642 | } | |
643 | memcpy_fromio(hdr, mgp->sram + hdr_offset, bytes); | |
644 | status = myri10ge_validate_firmware(mgp, hdr); | |
645 | kfree(hdr); | |
9dc6f0e7 BG |
646 | |
647 | /* check to see if adopted firmware has bug where adopting | |
648 | * it will cause broadcasts to be filtered unless the NIC | |
649 | * is kept in ALLMULTI mode */ | |
650 | if (mgp->fw_ver_major == 1 && mgp->fw_ver_minor == 4 && | |
651 | mgp->fw_ver_tiny >= 4 && mgp->fw_ver_tiny <= 11) { | |
652 | mgp->adopted_rx_filter_bug = 1; | |
653 | dev_warn(dev, "Adopting fw %d.%d.%d: " | |
654 | "working around rx filter bug\n", | |
655 | mgp->fw_ver_major, mgp->fw_ver_minor, | |
656 | mgp->fw_ver_tiny); | |
657 | } | |
0da34b6d BG |
658 | return status; |
659 | } | |
660 | ||
0178ec3d | 661 | static int myri10ge_get_firmware_capabilities(struct myri10ge_priv *mgp) |
fa0a90d9 BG |
662 | { |
663 | struct myri10ge_cmd cmd; | |
664 | int status; | |
665 | ||
666 | /* probe for IPv6 TSO support */ | |
667 | mgp->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO; | |
668 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_TSO6_HDR_SIZE, | |
669 | &cmd, 0); | |
670 | if (status == 0) { | |
671 | mgp->max_tso6 = cmd.data0; | |
672 | mgp->features |= NETIF_F_TSO6; | |
673 | } | |
674 | ||
675 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_RX_RING_SIZE, &cmd, 0); | |
676 | if (status != 0) { | |
677 | dev_err(&mgp->pdev->dev, | |
678 | "failed MXGEFW_CMD_GET_RX_RING_SIZE\n"); | |
679 | return -ENXIO; | |
680 | } | |
681 | ||
682 | mgp->max_intr_slots = 2 * (cmd.data0 / sizeof(struct mcp_dma_addr)); | |
683 | ||
684 | return 0; | |
685 | } | |
686 | ||
0dcffac1 | 687 | static int myri10ge_load_firmware(struct myri10ge_priv *mgp, int adopt) |
0da34b6d BG |
688 | { |
689 | char __iomem *submit; | |
f8fd57c1 | 690 | __be32 buf[16] __attribute__ ((__aligned__(8))); |
0da34b6d BG |
691 | u32 dma_low, dma_high, size; |
692 | int status, i; | |
693 | ||
b10c0668 | 694 | size = 0; |
0da34b6d BG |
695 | status = myri10ge_load_hotplug_firmware(mgp, &size); |
696 | if (status) { | |
0dcffac1 BG |
697 | if (!adopt) |
698 | return status; | |
0da34b6d BG |
699 | dev_warn(&mgp->pdev->dev, "hotplug firmware loading failed\n"); |
700 | ||
701 | /* Do not attempt to adopt firmware if there | |
702 | * was a bad crc */ | |
703 | if (status == -EIO) | |
704 | return status; | |
705 | ||
706 | status = myri10ge_adopt_running_firmware(mgp); | |
707 | if (status != 0) { | |
708 | dev_err(&mgp->pdev->dev, | |
709 | "failed to adopt running firmware\n"); | |
710 | return status; | |
711 | } | |
712 | dev_info(&mgp->pdev->dev, | |
713 | "Successfully adopted running firmware\n"); | |
b53bef84 | 714 | if (mgp->tx_boundary == 4096) { |
0da34b6d BG |
715 | dev_warn(&mgp->pdev->dev, |
716 | "Using firmware currently running on NIC" | |
717 | ". For optimal\n"); | |
718 | dev_warn(&mgp->pdev->dev, | |
719 | "performance consider loading optimized " | |
720 | "firmware\n"); | |
721 | dev_warn(&mgp->pdev->dev, "via hotplug\n"); | |
722 | } | |
723 | ||
724 | mgp->fw_name = "adopted"; | |
b53bef84 | 725 | mgp->tx_boundary = 2048; |
fa0a90d9 BG |
726 | myri10ge_dummy_rdma(mgp, 1); |
727 | status = myri10ge_get_firmware_capabilities(mgp); | |
0da34b6d BG |
728 | return status; |
729 | } | |
730 | ||
731 | /* clear confirmation addr */ | |
732 | mgp->cmd->data = 0; | |
733 | mb(); | |
734 | ||
735 | /* send a reload command to the bootstrap MCP, and wait for the | |
736 | * response in the confirmation address. The firmware should | |
737 | * write a -1 there to indicate it is alive and well | |
738 | */ | |
739 | dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus); | |
740 | dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus); | |
741 | ||
742 | buf[0] = htonl(dma_high); /* confirm addr MSW */ | |
743 | buf[1] = htonl(dma_low); /* confirm addr LSW */ | |
40f6cff5 | 744 | buf[2] = MYRI10GE_NO_CONFIRM_DATA; /* confirm data */ |
0da34b6d BG |
745 | |
746 | /* FIX: All newest firmware should un-protect the bottom of | |
747 | * the sram before handoff. However, the very first interfaces | |
748 | * do not. Therefore the handoff copy must skip the first 8 bytes | |
749 | */ | |
750 | buf[3] = htonl(MYRI10GE_FW_OFFSET + 8); /* where the code starts */ | |
751 | buf[4] = htonl(size - 8); /* length of code */ | |
752 | buf[5] = htonl(8); /* where to copy to */ | |
753 | buf[6] = htonl(0); /* where to jump to */ | |
754 | ||
e700f9f4 | 755 | submit = mgp->sram + MXGEFW_BOOT_HANDOFF; |
0da34b6d BG |
756 | |
757 | myri10ge_pio_copy(submit, &buf, sizeof(buf)); | |
758 | mb(); | |
759 | msleep(1); | |
760 | mb(); | |
761 | i = 0; | |
d93ca2a4 BG |
762 | while (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 9) { |
763 | msleep(1 << i); | |
0da34b6d BG |
764 | i++; |
765 | } | |
766 | if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA) { | |
767 | dev_err(&mgp->pdev->dev, "handoff failed\n"); | |
768 | return -ENXIO; | |
769 | } | |
9a71db72 | 770 | myri10ge_dummy_rdma(mgp, 1); |
fa0a90d9 | 771 | status = myri10ge_get_firmware_capabilities(mgp); |
0da34b6d | 772 | |
fa0a90d9 | 773 | return status; |
0da34b6d BG |
774 | } |
775 | ||
776 | static int myri10ge_update_mac_address(struct myri10ge_priv *mgp, u8 * addr) | |
777 | { | |
778 | struct myri10ge_cmd cmd; | |
779 | int status; | |
780 | ||
781 | cmd.data0 = ((addr[0] << 24) | (addr[1] << 16) | |
782 | | (addr[2] << 8) | addr[3]); | |
783 | ||
784 | cmd.data1 = ((addr[4] << 8) | (addr[5])); | |
785 | ||
786 | status = myri10ge_send_cmd(mgp, MXGEFW_SET_MAC_ADDRESS, &cmd, 0); | |
787 | return status; | |
788 | } | |
789 | ||
790 | static int myri10ge_change_pause(struct myri10ge_priv *mgp, int pause) | |
791 | { | |
792 | struct myri10ge_cmd cmd; | |
793 | int status, ctl; | |
794 | ||
795 | ctl = pause ? MXGEFW_ENABLE_FLOW_CONTROL : MXGEFW_DISABLE_FLOW_CONTROL; | |
796 | status = myri10ge_send_cmd(mgp, ctl, &cmd, 0); | |
797 | ||
798 | if (status) { | |
799 | printk(KERN_ERR | |
800 | "myri10ge: %s: Failed to set flow control mode\n", | |
801 | mgp->dev->name); | |
802 | return status; | |
803 | } | |
804 | mgp->pause = pause; | |
805 | return 0; | |
806 | } | |
807 | ||
808 | static void | |
809 | myri10ge_change_promisc(struct myri10ge_priv *mgp, int promisc, int atomic) | |
810 | { | |
811 | struct myri10ge_cmd cmd; | |
812 | int status, ctl; | |
813 | ||
814 | ctl = promisc ? MXGEFW_ENABLE_PROMISC : MXGEFW_DISABLE_PROMISC; | |
815 | status = myri10ge_send_cmd(mgp, ctl, &cmd, atomic); | |
816 | if (status) | |
817 | printk(KERN_ERR "myri10ge: %s: Failed to set promisc mode\n", | |
818 | mgp->dev->name); | |
819 | } | |
820 | ||
0d6ac257 | 821 | static int myri10ge_dma_test(struct myri10ge_priv *mgp, int test_type) |
0da34b6d BG |
822 | { |
823 | struct myri10ge_cmd cmd; | |
824 | int status; | |
0da34b6d | 825 | u32 len; |
34fdccea BG |
826 | struct page *dmatest_page; |
827 | dma_addr_t dmatest_bus; | |
0d6ac257 BG |
828 | char *test = " "; |
829 | ||
830 | dmatest_page = alloc_page(GFP_KERNEL); | |
831 | if (!dmatest_page) | |
832 | return -ENOMEM; | |
833 | dmatest_bus = pci_map_page(mgp->pdev, dmatest_page, 0, PAGE_SIZE, | |
834 | DMA_BIDIRECTIONAL); | |
835 | ||
836 | /* Run a small DMA test. | |
837 | * The magic multipliers to the length tell the firmware | |
838 | * to do DMA read, write, or read+write tests. The | |
839 | * results are returned in cmd.data0. The upper 16 | |
840 | * bits or the return is the number of transfers completed. | |
841 | * The lower 16 bits is the time in 0.5us ticks that the | |
842 | * transfers took to complete. | |
843 | */ | |
844 | ||
b53bef84 | 845 | len = mgp->tx_boundary; |
0d6ac257 BG |
846 | |
847 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus); | |
848 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus); | |
849 | cmd.data2 = len * 0x10000; | |
850 | status = myri10ge_send_cmd(mgp, test_type, &cmd, 0); | |
851 | if (status != 0) { | |
852 | test = "read"; | |
853 | goto abort; | |
854 | } | |
855 | mgp->read_dma = ((cmd.data0 >> 16) * len * 2) / (cmd.data0 & 0xffff); | |
856 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus); | |
857 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus); | |
858 | cmd.data2 = len * 0x1; | |
859 | status = myri10ge_send_cmd(mgp, test_type, &cmd, 0); | |
860 | if (status != 0) { | |
861 | test = "write"; | |
862 | goto abort; | |
863 | } | |
864 | mgp->write_dma = ((cmd.data0 >> 16) * len * 2) / (cmd.data0 & 0xffff); | |
865 | ||
866 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus); | |
867 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus); | |
868 | cmd.data2 = len * 0x10001; | |
869 | status = myri10ge_send_cmd(mgp, test_type, &cmd, 0); | |
870 | if (status != 0) { | |
871 | test = "read/write"; | |
872 | goto abort; | |
873 | } | |
874 | mgp->read_write_dma = ((cmd.data0 >> 16) * len * 2 * 2) / | |
875 | (cmd.data0 & 0xffff); | |
876 | ||
877 | abort: | |
878 | pci_unmap_page(mgp->pdev, dmatest_bus, PAGE_SIZE, DMA_BIDIRECTIONAL); | |
879 | put_page(dmatest_page); | |
880 | ||
881 | if (status != 0 && test_type != MXGEFW_CMD_UNALIGNED_TEST) | |
882 | dev_warn(&mgp->pdev->dev, "DMA %s benchmark failed: %d\n", | |
883 | test, status); | |
884 | ||
885 | return status; | |
886 | } | |
887 | ||
888 | static int myri10ge_reset(struct myri10ge_priv *mgp) | |
889 | { | |
890 | struct myri10ge_cmd cmd; | |
0dcffac1 BG |
891 | struct myri10ge_slice_state *ss; |
892 | int i, status; | |
0d6ac257 | 893 | size_t bytes; |
981813d8 BG |
894 | #ifdef CONFIG_DCA |
895 | unsigned long dca_tag_off; | |
896 | #endif | |
0da34b6d BG |
897 | |
898 | /* try to send a reset command to the card to see if it | |
899 | * is alive */ | |
900 | memset(&cmd, 0, sizeof(cmd)); | |
901 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_RESET, &cmd, 0); | |
902 | if (status != 0) { | |
903 | dev_err(&mgp->pdev->dev, "failed reset\n"); | |
904 | return -ENXIO; | |
905 | } | |
0d6ac257 BG |
906 | |
907 | (void)myri10ge_dma_test(mgp, MXGEFW_DMA_TEST); | |
0dcffac1 BG |
908 | /* |
909 | * Use non-ndis mcp_slot (eg, 4 bytes total, | |
910 | * no toeplitz hash value returned. Older firmware will | |
911 | * not understand this command, but will use the correct | |
912 | * sized mcp_slot, so we ignore error returns | |
913 | */ | |
914 | cmd.data0 = MXGEFW_RSS_MCP_SLOT_TYPE_MIN; | |
915 | (void)myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_RSS_MCP_SLOT_TYPE, &cmd, 0); | |
0da34b6d BG |
916 | |
917 | /* Now exchange information about interrupts */ | |
918 | ||
0dcffac1 | 919 | bytes = mgp->max_intr_slots * sizeof(*mgp->ss[0].rx_done.entry); |
0da34b6d BG |
920 | cmd.data0 = (u32) bytes; |
921 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_SIZE, &cmd, 0); | |
0dcffac1 BG |
922 | |
923 | /* | |
924 | * Even though we already know how many slices are supported | |
925 | * via myri10ge_probe_slices() MXGEFW_CMD_GET_MAX_RSS_QUEUES | |
926 | * has magic side effects, and must be called after a reset. | |
927 | * It must be called prior to calling any RSS related cmds, | |
928 | * including assigning an interrupt queue for anything but | |
929 | * slice 0. It must also be called *after* | |
930 | * MXGEFW_CMD_SET_INTRQ_SIZE, since the intrq size is used by | |
931 | * the firmware to compute offsets. | |
932 | */ | |
933 | ||
934 | if (mgp->num_slices > 1) { | |
935 | ||
936 | /* ask the maximum number of slices it supports */ | |
937 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_RSS_QUEUES, | |
938 | &cmd, 0); | |
939 | if (status != 0) { | |
940 | dev_err(&mgp->pdev->dev, | |
941 | "failed to get number of slices\n"); | |
942 | } | |
943 | ||
944 | /* | |
945 | * MXGEFW_CMD_ENABLE_RSS_QUEUES must be called prior | |
946 | * to setting up the interrupt queue DMA | |
947 | */ | |
948 | ||
949 | cmd.data0 = mgp->num_slices; | |
950 | cmd.data1 = 1; /* use MSI-X */ | |
951 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ENABLE_RSS_QUEUES, | |
952 | &cmd, 0); | |
953 | if (status != 0) { | |
954 | dev_err(&mgp->pdev->dev, | |
955 | "failed to set number of slices\n"); | |
956 | ||
957 | return status; | |
958 | } | |
959 | } | |
960 | for (i = 0; i < mgp->num_slices; i++) { | |
961 | ss = &mgp->ss[i]; | |
962 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(ss->rx_done.bus); | |
963 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(ss->rx_done.bus); | |
964 | cmd.data2 = i; | |
965 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_DMA, | |
966 | &cmd, 0); | |
967 | }; | |
0da34b6d BG |
968 | |
969 | status |= | |
970 | myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_ACK_OFFSET, &cmd, 0); | |
0dcffac1 BG |
971 | for (i = 0; i < mgp->num_slices; i++) { |
972 | ss = &mgp->ss[i]; | |
973 | ss->irq_claim = | |
974 | (__iomem __be32 *) (mgp->sram + cmd.data0 + 8 * i); | |
975 | } | |
df30a740 BG |
976 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_DEASSERT_OFFSET, |
977 | &cmd, 0); | |
978 | mgp->irq_deassert = (__iomem __be32 *) (mgp->sram + cmd.data0); | |
0da34b6d | 979 | |
0da34b6d BG |
980 | status |= myri10ge_send_cmd |
981 | (mgp, MXGEFW_CMD_GET_INTR_COAL_DELAY_OFFSET, &cmd, 0); | |
40f6cff5 | 982 | mgp->intr_coal_delay_ptr = (__iomem __be32 *) (mgp->sram + cmd.data0); |
0da34b6d BG |
983 | if (status != 0) { |
984 | dev_err(&mgp->pdev->dev, "failed set interrupt parameters\n"); | |
985 | return status; | |
986 | } | |
40f6cff5 | 987 | put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr); |
0da34b6d | 988 | |
981813d8 BG |
989 | #ifdef CONFIG_DCA |
990 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_DCA_OFFSET, &cmd, 0); | |
991 | dca_tag_off = cmd.data0; | |
992 | for (i = 0; i < mgp->num_slices; i++) { | |
993 | ss = &mgp->ss[i]; | |
994 | if (status == 0) { | |
995 | ss->dca_tag = (__iomem __be32 *) | |
996 | (mgp->sram + dca_tag_off + 4 * i); | |
997 | } else { | |
998 | ss->dca_tag = NULL; | |
999 | } | |
1000 | } | |
1001 | #endif /* CONFIG_DCA */ | |
1002 | ||
0da34b6d | 1003 | /* reset mcp/driver shared state back to 0 */ |
0dcffac1 | 1004 | |
c58ac5ca | 1005 | mgp->link_changes = 0; |
0dcffac1 BG |
1006 | for (i = 0; i < mgp->num_slices; i++) { |
1007 | ss = &mgp->ss[i]; | |
1008 | ||
1009 | memset(ss->rx_done.entry, 0, bytes); | |
1010 | ss->tx.req = 0; | |
1011 | ss->tx.done = 0; | |
1012 | ss->tx.pkt_start = 0; | |
1013 | ss->tx.pkt_done = 0; | |
1014 | ss->rx_big.cnt = 0; | |
1015 | ss->rx_small.cnt = 0; | |
1016 | ss->rx_done.idx = 0; | |
1017 | ss->rx_done.cnt = 0; | |
1018 | ss->tx.wake_queue = 0; | |
1019 | ss->tx.stop_queue = 0; | |
1020 | } | |
1021 | ||
0da34b6d | 1022 | status = myri10ge_update_mac_address(mgp, mgp->dev->dev_addr); |
0da34b6d | 1023 | myri10ge_change_pause(mgp, mgp->pause); |
2f76216f | 1024 | myri10ge_set_multicast_list(mgp->dev); |
0da34b6d BG |
1025 | return status; |
1026 | } | |
1027 | ||
981813d8 BG |
1028 | #ifdef CONFIG_DCA |
1029 | static void | |
1030 | myri10ge_write_dca(struct myri10ge_slice_state *ss, int cpu, int tag) | |
1031 | { | |
1032 | ss->cpu = cpu; | |
1033 | ss->cached_dca_tag = tag; | |
1034 | put_be32(htonl(tag), ss->dca_tag); | |
1035 | } | |
1036 | ||
1037 | static inline void myri10ge_update_dca(struct myri10ge_slice_state *ss) | |
1038 | { | |
1039 | int cpu = get_cpu(); | |
1040 | int tag; | |
1041 | ||
1042 | if (cpu != ss->cpu) { | |
1043 | tag = dca_get_tag(cpu); | |
1044 | if (ss->cached_dca_tag != tag) | |
1045 | myri10ge_write_dca(ss, cpu, tag); | |
1046 | } | |
1047 | put_cpu(); | |
1048 | } | |
1049 | ||
1050 | static void myri10ge_setup_dca(struct myri10ge_priv *mgp) | |
1051 | { | |
1052 | int err, i; | |
1053 | struct pci_dev *pdev = mgp->pdev; | |
1054 | ||
1055 | if (mgp->ss[0].dca_tag == NULL || mgp->dca_enabled) | |
1056 | return; | |
1057 | if (!myri10ge_dca) { | |
1058 | dev_err(&pdev->dev, "dca disabled by administrator\n"); | |
1059 | return; | |
1060 | } | |
1061 | err = dca_add_requester(&pdev->dev); | |
1062 | if (err) { | |
1063 | dev_err(&pdev->dev, | |
1064 | "dca_add_requester() failed, err=%d\n", err); | |
1065 | return; | |
1066 | } | |
1067 | mgp->dca_enabled = 1; | |
1068 | for (i = 0; i < mgp->num_slices; i++) | |
1069 | myri10ge_write_dca(&mgp->ss[i], -1, 0); | |
1070 | } | |
1071 | ||
1072 | static void myri10ge_teardown_dca(struct myri10ge_priv *mgp) | |
1073 | { | |
1074 | struct pci_dev *pdev = mgp->pdev; | |
1075 | int err; | |
1076 | ||
1077 | if (!mgp->dca_enabled) | |
1078 | return; | |
1079 | mgp->dca_enabled = 0; | |
1080 | err = dca_remove_requester(&pdev->dev); | |
1081 | } | |
1082 | ||
1083 | static int myri10ge_notify_dca_device(struct device *dev, void *data) | |
1084 | { | |
1085 | struct myri10ge_priv *mgp; | |
1086 | unsigned long event; | |
1087 | ||
1088 | mgp = dev_get_drvdata(dev); | |
1089 | event = *(unsigned long *)data; | |
1090 | ||
1091 | if (event == DCA_PROVIDER_ADD) | |
1092 | myri10ge_setup_dca(mgp); | |
1093 | else if (event == DCA_PROVIDER_REMOVE) | |
1094 | myri10ge_teardown_dca(mgp); | |
1095 | return 0; | |
1096 | } | |
1097 | #endif /* CONFIG_DCA */ | |
1098 | ||
0da34b6d BG |
1099 | static inline void |
1100 | myri10ge_submit_8rx(struct mcp_kreq_ether_recv __iomem * dst, | |
1101 | struct mcp_kreq_ether_recv *src) | |
1102 | { | |
40f6cff5 | 1103 | __be32 low; |
0da34b6d BG |
1104 | |
1105 | low = src->addr_low; | |
40f6cff5 | 1106 | src->addr_low = htonl(DMA_32BIT_MASK); |
e67bda55 BG |
1107 | myri10ge_pio_copy(dst, src, 4 * sizeof(*src)); |
1108 | mb(); | |
1109 | myri10ge_pio_copy(dst + 4, src + 4, 4 * sizeof(*src)); | |
0da34b6d BG |
1110 | mb(); |
1111 | src->addr_low = low; | |
40f6cff5 | 1112 | put_be32(low, &dst->addr_low); |
0da34b6d BG |
1113 | mb(); |
1114 | } | |
1115 | ||
40f6cff5 | 1116 | static inline void myri10ge_vlan_ip_csum(struct sk_buff *skb, __wsum hw_csum) |
0da34b6d BG |
1117 | { |
1118 | struct vlan_hdr *vh = (struct vlan_hdr *)(skb->data); | |
1119 | ||
40f6cff5 | 1120 | if ((skb->protocol == htons(ETH_P_8021Q)) && |
0da34b6d BG |
1121 | (vh->h_vlan_encapsulated_proto == htons(ETH_P_IP) || |
1122 | vh->h_vlan_encapsulated_proto == htons(ETH_P_IPV6))) { | |
1123 | skb->csum = hw_csum; | |
84fa7933 | 1124 | skb->ip_summed = CHECKSUM_COMPLETE; |
0da34b6d BG |
1125 | } |
1126 | } | |
1127 | ||
dd50f336 BG |
1128 | static inline void |
1129 | myri10ge_rx_skb_build(struct sk_buff *skb, u8 * va, | |
1130 | struct skb_frag_struct *rx_frags, int len, int hlen) | |
1131 | { | |
1132 | struct skb_frag_struct *skb_frags; | |
1133 | ||
1134 | skb->len = skb->data_len = len; | |
1135 | skb->truesize = len + sizeof(struct sk_buff); | |
1136 | /* attach the page(s) */ | |
1137 | ||
1138 | skb_frags = skb_shinfo(skb)->frags; | |
1139 | while (len > 0) { | |
1140 | memcpy(skb_frags, rx_frags, sizeof(*skb_frags)); | |
1141 | len -= rx_frags->size; | |
1142 | skb_frags++; | |
1143 | rx_frags++; | |
1144 | skb_shinfo(skb)->nr_frags++; | |
1145 | } | |
1146 | ||
1147 | /* pskb_may_pull is not available in irq context, but | |
1148 | * skb_pull() (for ether_pad and eth_type_trans()) requires | |
1149 | * the beginning of the packet in skb_headlen(), move it | |
1150 | * manually */ | |
27d7ff46 | 1151 | skb_copy_to_linear_data(skb, va, hlen); |
dd50f336 BG |
1152 | skb_shinfo(skb)->frags[0].page_offset += hlen; |
1153 | skb_shinfo(skb)->frags[0].size -= hlen; | |
1154 | skb->data_len -= hlen; | |
1155 | skb->tail += hlen; | |
1156 | skb_pull(skb, MXGEFW_PAD); | |
1157 | } | |
1158 | ||
1159 | static void | |
1160 | myri10ge_alloc_rx_pages(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx, | |
1161 | int bytes, int watchdog) | |
1162 | { | |
1163 | struct page *page; | |
1164 | int idx; | |
1165 | ||
1166 | if (unlikely(rx->watchdog_needed && !watchdog)) | |
1167 | return; | |
1168 | ||
1169 | /* try to refill entire ring */ | |
1170 | while (rx->fill_cnt != (rx->cnt + rx->mask + 1)) { | |
1171 | idx = rx->fill_cnt & rx->mask; | |
ae8509b1 | 1172 | if (rx->page_offset + bytes <= MYRI10GE_ALLOC_SIZE) { |
dd50f336 BG |
1173 | /* we can use part of previous page */ |
1174 | get_page(rx->page); | |
1175 | } else { | |
1176 | /* we need a new page */ | |
1177 | page = | |
1178 | alloc_pages(GFP_ATOMIC | __GFP_COMP, | |
1179 | MYRI10GE_ALLOC_ORDER); | |
1180 | if (unlikely(page == NULL)) { | |
1181 | if (rx->fill_cnt - rx->cnt < 16) | |
1182 | rx->watchdog_needed = 1; | |
1183 | return; | |
1184 | } | |
1185 | rx->page = page; | |
1186 | rx->page_offset = 0; | |
1187 | rx->bus = pci_map_page(mgp->pdev, page, 0, | |
1188 | MYRI10GE_ALLOC_SIZE, | |
1189 | PCI_DMA_FROMDEVICE); | |
1190 | } | |
1191 | rx->info[idx].page = rx->page; | |
1192 | rx->info[idx].page_offset = rx->page_offset; | |
1193 | /* note that this is the address of the start of the | |
1194 | * page */ | |
1195 | pci_unmap_addr_set(&rx->info[idx], bus, rx->bus); | |
1196 | rx->shadow[idx].addr_low = | |
1197 | htonl(MYRI10GE_LOWPART_TO_U32(rx->bus) + rx->page_offset); | |
1198 | rx->shadow[idx].addr_high = | |
1199 | htonl(MYRI10GE_HIGHPART_TO_U32(rx->bus)); | |
1200 | ||
1201 | /* start next packet on a cacheline boundary */ | |
1202 | rx->page_offset += SKB_DATA_ALIGN(bytes); | |
ae8509b1 BG |
1203 | |
1204 | #if MYRI10GE_ALLOC_SIZE > 4096 | |
1205 | /* don't cross a 4KB boundary */ | |
1206 | if ((rx->page_offset >> 12) != | |
1207 | ((rx->page_offset + bytes - 1) >> 12)) | |
1208 | rx->page_offset = (rx->page_offset + 4096) & ~4095; | |
1209 | #endif | |
dd50f336 BG |
1210 | rx->fill_cnt++; |
1211 | ||
1212 | /* copy 8 descriptors to the firmware at a time */ | |
1213 | if ((idx & 7) == 7) { | |
e454e7e2 BG |
1214 | myri10ge_submit_8rx(&rx->lanai[idx - 7], |
1215 | &rx->shadow[idx - 7]); | |
dd50f336 BG |
1216 | } |
1217 | } | |
1218 | } | |
1219 | ||
1220 | static inline void | |
1221 | myri10ge_unmap_rx_page(struct pci_dev *pdev, | |
1222 | struct myri10ge_rx_buffer_state *info, int bytes) | |
1223 | { | |
1224 | /* unmap the recvd page if we're the only or last user of it */ | |
1225 | if (bytes >= MYRI10GE_ALLOC_SIZE / 2 || | |
1226 | (info->page_offset + 2 * bytes) > MYRI10GE_ALLOC_SIZE) { | |
1227 | pci_unmap_page(pdev, (pci_unmap_addr(info, bus) | |
1228 | & ~(MYRI10GE_ALLOC_SIZE - 1)), | |
1229 | MYRI10GE_ALLOC_SIZE, PCI_DMA_FROMDEVICE); | |
1230 | } | |
1231 | } | |
1232 | ||
1233 | #define MYRI10GE_HLEN 64 /* The number of bytes to copy from a | |
1234 | * page into an skb */ | |
1235 | ||
1236 | static inline int | |
b53bef84 | 1237 | myri10ge_rx_done(struct myri10ge_slice_state *ss, struct myri10ge_rx_buf *rx, |
52ea6fb3 | 1238 | int bytes, int len, __wsum csum) |
dd50f336 | 1239 | { |
b53bef84 | 1240 | struct myri10ge_priv *mgp = ss->mgp; |
dd50f336 BG |
1241 | struct sk_buff *skb; |
1242 | struct skb_frag_struct rx_frags[MYRI10GE_MAX_FRAGS_PER_FRAME]; | |
1243 | int i, idx, hlen, remainder; | |
1244 | struct pci_dev *pdev = mgp->pdev; | |
1245 | struct net_device *dev = mgp->dev; | |
1246 | u8 *va; | |
1247 | ||
1248 | len += MXGEFW_PAD; | |
1249 | idx = rx->cnt & rx->mask; | |
1250 | va = page_address(rx->info[idx].page) + rx->info[idx].page_offset; | |
1251 | prefetch(va); | |
1252 | /* Fill skb_frag_struct(s) with data from our receive */ | |
1253 | for (i = 0, remainder = len; remainder > 0; i++) { | |
1254 | myri10ge_unmap_rx_page(pdev, &rx->info[idx], bytes); | |
1255 | rx_frags[i].page = rx->info[idx].page; | |
1256 | rx_frags[i].page_offset = rx->info[idx].page_offset; | |
1257 | if (remainder < MYRI10GE_ALLOC_SIZE) | |
1258 | rx_frags[i].size = remainder; | |
1259 | else | |
1260 | rx_frags[i].size = MYRI10GE_ALLOC_SIZE; | |
1261 | rx->cnt++; | |
1262 | idx = rx->cnt & rx->mask; | |
1263 | remainder -= MYRI10GE_ALLOC_SIZE; | |
1264 | } | |
1265 | ||
1e6e9342 AG |
1266 | if (mgp->csum_flag && myri10ge_lro) { |
1267 | rx_frags[0].page_offset += MXGEFW_PAD; | |
1268 | rx_frags[0].size -= MXGEFW_PAD; | |
1269 | len -= MXGEFW_PAD; | |
b53bef84 | 1270 | lro_receive_frags(&ss->rx_done.lro_mgr, rx_frags, |
b53bef84 | 1271 | /* opaque, will come back in get_frag_header */ |
0dcffac1 | 1272 | len, len, |
b53bef84 | 1273 | (void *)(__force unsigned long)csum, csum); |
0dcffac1 | 1274 | |
1e6e9342 AG |
1275 | return 1; |
1276 | } | |
1277 | ||
dd50f336 BG |
1278 | hlen = MYRI10GE_HLEN > len ? len : MYRI10GE_HLEN; |
1279 | ||
e636b2ea BG |
1280 | /* allocate an skb to attach the page(s) to. This is done |
1281 | * after trying LRO, so as to avoid skb allocation overheads */ | |
dd50f336 BG |
1282 | |
1283 | skb = netdev_alloc_skb(dev, MYRI10GE_HLEN + 16); | |
1284 | if (unlikely(skb == NULL)) { | |
1285 | mgp->stats.rx_dropped++; | |
1286 | do { | |
1287 | i--; | |
1288 | put_page(rx_frags[i].page); | |
1289 | } while (i != 0); | |
1290 | return 0; | |
1291 | } | |
1292 | ||
1293 | /* Attach the pages to the skb, and trim off any padding */ | |
1294 | myri10ge_rx_skb_build(skb, va, rx_frags, len, hlen); | |
1295 | if (skb_shinfo(skb)->frags[0].size <= 0) { | |
1296 | put_page(skb_shinfo(skb)->frags[0].page); | |
1297 | skb_shinfo(skb)->nr_frags = 0; | |
1298 | } | |
1299 | skb->protocol = eth_type_trans(skb, dev); | |
dd50f336 BG |
1300 | |
1301 | if (mgp->csum_flag) { | |
1302 | if ((skb->protocol == htons(ETH_P_IP)) || | |
1303 | (skb->protocol == htons(ETH_P_IPV6))) { | |
1304 | skb->csum = csum; | |
1305 | skb->ip_summed = CHECKSUM_COMPLETE; | |
1306 | } else | |
1307 | myri10ge_vlan_ip_csum(skb, csum); | |
1308 | } | |
1309 | netif_receive_skb(skb); | |
1310 | dev->last_rx = jiffies; | |
1311 | return 1; | |
1312 | } | |
1313 | ||
b53bef84 BG |
1314 | static inline void |
1315 | myri10ge_tx_done(struct myri10ge_slice_state *ss, int mcp_index) | |
0da34b6d | 1316 | { |
b53bef84 BG |
1317 | struct pci_dev *pdev = ss->mgp->pdev; |
1318 | struct myri10ge_tx_buf *tx = &ss->tx; | |
0da34b6d BG |
1319 | struct sk_buff *skb; |
1320 | int idx, len; | |
0da34b6d BG |
1321 | |
1322 | while (tx->pkt_done != mcp_index) { | |
1323 | idx = tx->done & tx->mask; | |
1324 | skb = tx->info[idx].skb; | |
1325 | ||
1326 | /* Mark as free */ | |
1327 | tx->info[idx].skb = NULL; | |
1328 | if (tx->info[idx].last) { | |
1329 | tx->pkt_done++; | |
1330 | tx->info[idx].last = 0; | |
1331 | } | |
1332 | tx->done++; | |
1333 | len = pci_unmap_len(&tx->info[idx], len); | |
1334 | pci_unmap_len_set(&tx->info[idx], len, 0); | |
1335 | if (skb) { | |
b53bef84 BG |
1336 | ss->stats.tx_bytes += skb->len; |
1337 | ss->stats.tx_packets++; | |
0da34b6d BG |
1338 | dev_kfree_skb_irq(skb); |
1339 | if (len) | |
1340 | pci_unmap_single(pdev, | |
1341 | pci_unmap_addr(&tx->info[idx], | |
1342 | bus), len, | |
1343 | PCI_DMA_TODEVICE); | |
1344 | } else { | |
1345 | if (len) | |
1346 | pci_unmap_page(pdev, | |
1347 | pci_unmap_addr(&tx->info[idx], | |
1348 | bus), len, | |
1349 | PCI_DMA_TODEVICE); | |
1350 | } | |
0da34b6d BG |
1351 | } |
1352 | /* start the queue if we've stopped it */ | |
b53bef84 | 1353 | if (netif_queue_stopped(ss->dev) |
0da34b6d | 1354 | && tx->req - tx->done < (tx->mask >> 1)) { |
b53bef84 BG |
1355 | tx->wake_queue++; |
1356 | netif_wake_queue(ss->dev); | |
0da34b6d BG |
1357 | } |
1358 | } | |
1359 | ||
b53bef84 BG |
1360 | static inline int |
1361 | myri10ge_clean_rx_done(struct myri10ge_slice_state *ss, int budget) | |
0da34b6d | 1362 | { |
b53bef84 BG |
1363 | struct myri10ge_rx_done *rx_done = &ss->rx_done; |
1364 | struct myri10ge_priv *mgp = ss->mgp; | |
0da34b6d BG |
1365 | unsigned long rx_bytes = 0; |
1366 | unsigned long rx_packets = 0; | |
1367 | unsigned long rx_ok; | |
1368 | ||
1369 | int idx = rx_done->idx; | |
1370 | int cnt = rx_done->cnt; | |
bea3348e | 1371 | int work_done = 0; |
0da34b6d | 1372 | u16 length; |
40f6cff5 | 1373 | __wsum checksum; |
0da34b6d | 1374 | |
c956a240 | 1375 | while (rx_done->entry[idx].length != 0 && work_done < budget) { |
0da34b6d BG |
1376 | length = ntohs(rx_done->entry[idx].length); |
1377 | rx_done->entry[idx].length = 0; | |
40f6cff5 | 1378 | checksum = csum_unfold(rx_done->entry[idx].checksum); |
0da34b6d | 1379 | if (length <= mgp->small_bytes) |
b53bef84 | 1380 | rx_ok = myri10ge_rx_done(ss, &ss->rx_small, |
52ea6fb3 BG |
1381 | mgp->small_bytes, |
1382 | length, checksum); | |
0da34b6d | 1383 | else |
b53bef84 | 1384 | rx_ok = myri10ge_rx_done(ss, &ss->rx_big, |
52ea6fb3 BG |
1385 | mgp->big_bytes, |
1386 | length, checksum); | |
0da34b6d BG |
1387 | rx_packets += rx_ok; |
1388 | rx_bytes += rx_ok * (unsigned long)length; | |
1389 | cnt++; | |
014377a1 | 1390 | idx = cnt & (mgp->max_intr_slots - 1); |
c956a240 | 1391 | work_done++; |
0da34b6d BG |
1392 | } |
1393 | rx_done->idx = idx; | |
1394 | rx_done->cnt = cnt; | |
b53bef84 BG |
1395 | ss->stats.rx_packets += rx_packets; |
1396 | ss->stats.rx_bytes += rx_bytes; | |
c7dab99b | 1397 | |
1e6e9342 AG |
1398 | if (myri10ge_lro) |
1399 | lro_flush_all(&rx_done->lro_mgr); | |
1400 | ||
c7dab99b | 1401 | /* restock receive rings if needed */ |
b53bef84 BG |
1402 | if (ss->rx_small.fill_cnt - ss->rx_small.cnt < myri10ge_fill_thresh) |
1403 | myri10ge_alloc_rx_pages(mgp, &ss->rx_small, | |
c7dab99b | 1404 | mgp->small_bytes + MXGEFW_PAD, 0); |
b53bef84 BG |
1405 | if (ss->rx_big.fill_cnt - ss->rx_big.cnt < myri10ge_fill_thresh) |
1406 | myri10ge_alloc_rx_pages(mgp, &ss->rx_big, mgp->big_bytes, 0); | |
c7dab99b | 1407 | |
bea3348e | 1408 | return work_done; |
0da34b6d BG |
1409 | } |
1410 | ||
1411 | static inline void myri10ge_check_statblock(struct myri10ge_priv *mgp) | |
1412 | { | |
0dcffac1 | 1413 | struct mcp_irq_data *stats = mgp->ss[0].fw_stats; |
0da34b6d BG |
1414 | |
1415 | if (unlikely(stats->stats_updated)) { | |
798a95db BG |
1416 | unsigned link_up = ntohl(stats->link_up); |
1417 | if (mgp->link_state != link_up) { | |
1418 | mgp->link_state = link_up; | |
1419 | ||
1420 | if (mgp->link_state == MXGEFW_LINK_UP) { | |
c58ac5ca BG |
1421 | if (netif_msg_link(mgp)) |
1422 | printk(KERN_INFO | |
1423 | "myri10ge: %s: link up\n", | |
1424 | mgp->dev->name); | |
0da34b6d | 1425 | netif_carrier_on(mgp->dev); |
c58ac5ca | 1426 | mgp->link_changes++; |
0da34b6d | 1427 | } else { |
c58ac5ca BG |
1428 | if (netif_msg_link(mgp)) |
1429 | printk(KERN_INFO | |
798a95db BG |
1430 | "myri10ge: %s: link %s\n", |
1431 | mgp->dev->name, | |
1432 | (link_up == MXGEFW_LINK_MYRINET ? | |
1433 | "mismatch (Myrinet detected)" : | |
1434 | "down")); | |
0da34b6d | 1435 | netif_carrier_off(mgp->dev); |
c58ac5ca | 1436 | mgp->link_changes++; |
0da34b6d BG |
1437 | } |
1438 | } | |
1439 | if (mgp->rdma_tags_available != | |
b53bef84 | 1440 | ntohl(stats->rdma_tags_available)) { |
0da34b6d | 1441 | mgp->rdma_tags_available = |
b53bef84 | 1442 | ntohl(stats->rdma_tags_available); |
0da34b6d BG |
1443 | printk(KERN_WARNING "myri10ge: %s: RDMA timed out! " |
1444 | "%d tags left\n", mgp->dev->name, | |
1445 | mgp->rdma_tags_available); | |
1446 | } | |
1447 | mgp->down_cnt += stats->link_down; | |
1448 | if (stats->link_down) | |
1449 | wake_up(&mgp->down_wq); | |
1450 | } | |
1451 | } | |
1452 | ||
bea3348e | 1453 | static int myri10ge_poll(struct napi_struct *napi, int budget) |
0da34b6d | 1454 | { |
b53bef84 BG |
1455 | struct myri10ge_slice_state *ss = |
1456 | container_of(napi, struct myri10ge_slice_state, napi); | |
1457 | struct net_device *netdev = ss->mgp->dev; | |
bea3348e | 1458 | int work_done; |
0da34b6d | 1459 | |
981813d8 BG |
1460 | #ifdef CONFIG_DCA |
1461 | if (ss->mgp->dca_enabled) | |
1462 | myri10ge_update_dca(ss); | |
1463 | #endif | |
1464 | ||
0da34b6d | 1465 | /* process as many rx events as NAPI will allow */ |
b53bef84 | 1466 | work_done = myri10ge_clean_rx_done(ss, budget); |
0da34b6d | 1467 | |
4ec24119 | 1468 | if (work_done < budget) { |
bea3348e | 1469 | netif_rx_complete(netdev, napi); |
b53bef84 | 1470 | put_be32(htonl(3), ss->irq_claim); |
0da34b6d | 1471 | } |
bea3348e | 1472 | return work_done; |
0da34b6d BG |
1473 | } |
1474 | ||
7d12e780 | 1475 | static irqreturn_t myri10ge_intr(int irq, void *arg) |
0da34b6d | 1476 | { |
b53bef84 BG |
1477 | struct myri10ge_slice_state *ss = arg; |
1478 | struct myri10ge_priv *mgp = ss->mgp; | |
1479 | struct mcp_irq_data *stats = ss->fw_stats; | |
1480 | struct myri10ge_tx_buf *tx = &ss->tx; | |
0da34b6d BG |
1481 | u32 send_done_count; |
1482 | int i; | |
1483 | ||
0dcffac1 BG |
1484 | /* an interrupt on a non-zero slice is implicitly valid |
1485 | * since MSI-X irqs are not shared */ | |
1486 | if (ss != mgp->ss) { | |
1487 | netif_rx_schedule(ss->dev, &ss->napi); | |
1488 | return (IRQ_HANDLED); | |
1489 | } | |
1490 | ||
0da34b6d BG |
1491 | /* make sure it is our IRQ, and that the DMA has finished */ |
1492 | if (unlikely(!stats->valid)) | |
1493 | return (IRQ_NONE); | |
1494 | ||
1495 | /* low bit indicates receives are present, so schedule | |
1496 | * napi poll handler */ | |
1497 | if (stats->valid & 1) | |
b53bef84 | 1498 | netif_rx_schedule(ss->dev, &ss->napi); |
0da34b6d | 1499 | |
0dcffac1 | 1500 | if (!mgp->msi_enabled && !mgp->msix_enabled) { |
40f6cff5 | 1501 | put_be32(0, mgp->irq_deassert); |
0da34b6d BG |
1502 | if (!myri10ge_deassert_wait) |
1503 | stats->valid = 0; | |
1504 | mb(); | |
1505 | } else | |
1506 | stats->valid = 0; | |
1507 | ||
1508 | /* Wait for IRQ line to go low, if using INTx */ | |
1509 | i = 0; | |
1510 | while (1) { | |
1511 | i++; | |
1512 | /* check for transmit completes and receives */ | |
1513 | send_done_count = ntohl(stats->send_done_count); | |
1514 | if (send_done_count != tx->pkt_done) | |
b53bef84 | 1515 | myri10ge_tx_done(ss, (int)send_done_count); |
0da34b6d BG |
1516 | if (unlikely(i > myri10ge_max_irq_loops)) { |
1517 | printk(KERN_WARNING "myri10ge: %s: irq stuck?\n", | |
1518 | mgp->dev->name); | |
1519 | stats->valid = 0; | |
1520 | schedule_work(&mgp->watchdog_work); | |
1521 | } | |
1522 | if (likely(stats->valid == 0)) | |
1523 | break; | |
1524 | cpu_relax(); | |
1525 | barrier(); | |
1526 | } | |
1527 | ||
1528 | myri10ge_check_statblock(mgp); | |
1529 | ||
b53bef84 | 1530 | put_be32(htonl(3), ss->irq_claim + 1); |
0da34b6d BG |
1531 | return (IRQ_HANDLED); |
1532 | } | |
1533 | ||
1534 | static int | |
1535 | myri10ge_get_settings(struct net_device *netdev, struct ethtool_cmd *cmd) | |
1536 | { | |
c0bf8801 BG |
1537 | struct myri10ge_priv *mgp = netdev_priv(netdev); |
1538 | char *ptr; | |
1539 | int i; | |
1540 | ||
0da34b6d BG |
1541 | cmd->autoneg = AUTONEG_DISABLE; |
1542 | cmd->speed = SPEED_10000; | |
1543 | cmd->duplex = DUPLEX_FULL; | |
c0bf8801 BG |
1544 | |
1545 | /* | |
1546 | * parse the product code to deterimine the interface type | |
1547 | * (CX4, XFP, Quad Ribbon Fiber) by looking at the character | |
1548 | * after the 3rd dash in the driver's cached copy of the | |
1549 | * EEPROM's product code string. | |
1550 | */ | |
1551 | ptr = mgp->product_code_string; | |
1552 | if (ptr == NULL) { | |
1553 | printk(KERN_ERR "myri10ge: %s: Missing product code\n", | |
99f5f87e | 1554 | netdev->name); |
c0bf8801 BG |
1555 | return 0; |
1556 | } | |
1557 | for (i = 0; i < 3; i++, ptr++) { | |
1558 | ptr = strchr(ptr, '-'); | |
1559 | if (ptr == NULL) { | |
1560 | printk(KERN_ERR "myri10ge: %s: Invalid product " | |
1561 | "code %s\n", netdev->name, | |
1562 | mgp->product_code_string); | |
1563 | return 0; | |
1564 | } | |
1565 | } | |
1566 | if (*ptr == 'R' || *ptr == 'Q') { | |
1567 | /* We've found either an XFP or quad ribbon fiber */ | |
1568 | cmd->port = PORT_FIBRE; | |
1569 | } | |
0da34b6d BG |
1570 | return 0; |
1571 | } | |
1572 | ||
1573 | static void | |
1574 | myri10ge_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) | |
1575 | { | |
1576 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1577 | ||
1578 | strlcpy(info->driver, "myri10ge", sizeof(info->driver)); | |
1579 | strlcpy(info->version, MYRI10GE_VERSION_STR, sizeof(info->version)); | |
1580 | strlcpy(info->fw_version, mgp->fw_version, sizeof(info->fw_version)); | |
1581 | strlcpy(info->bus_info, pci_name(mgp->pdev), sizeof(info->bus_info)); | |
1582 | } | |
1583 | ||
1584 | static int | |
1585 | myri10ge_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal) | |
1586 | { | |
1587 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
99f5f87e | 1588 | |
0da34b6d BG |
1589 | coal->rx_coalesce_usecs = mgp->intr_coal_delay; |
1590 | return 0; | |
1591 | } | |
1592 | ||
1593 | static int | |
1594 | myri10ge_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal) | |
1595 | { | |
1596 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1597 | ||
1598 | mgp->intr_coal_delay = coal->rx_coalesce_usecs; | |
40f6cff5 | 1599 | put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr); |
0da34b6d BG |
1600 | return 0; |
1601 | } | |
1602 | ||
1603 | static void | |
1604 | myri10ge_get_pauseparam(struct net_device *netdev, | |
1605 | struct ethtool_pauseparam *pause) | |
1606 | { | |
1607 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1608 | ||
1609 | pause->autoneg = 0; | |
1610 | pause->rx_pause = mgp->pause; | |
1611 | pause->tx_pause = mgp->pause; | |
1612 | } | |
1613 | ||
1614 | static int | |
1615 | myri10ge_set_pauseparam(struct net_device *netdev, | |
1616 | struct ethtool_pauseparam *pause) | |
1617 | { | |
1618 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1619 | ||
1620 | if (pause->tx_pause != mgp->pause) | |
1621 | return myri10ge_change_pause(mgp, pause->tx_pause); | |
1622 | if (pause->rx_pause != mgp->pause) | |
1623 | return myri10ge_change_pause(mgp, pause->tx_pause); | |
1624 | if (pause->autoneg != 0) | |
1625 | return -EINVAL; | |
1626 | return 0; | |
1627 | } | |
1628 | ||
1629 | static void | |
1630 | myri10ge_get_ringparam(struct net_device *netdev, | |
1631 | struct ethtool_ringparam *ring) | |
1632 | { | |
1633 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1634 | ||
0dcffac1 BG |
1635 | ring->rx_mini_max_pending = mgp->ss[0].rx_small.mask + 1; |
1636 | ring->rx_max_pending = mgp->ss[0].rx_big.mask + 1; | |
0da34b6d | 1637 | ring->rx_jumbo_max_pending = 0; |
0dcffac1 | 1638 | ring->tx_max_pending = mgp->ss[0].rx_small.mask + 1; |
0da34b6d BG |
1639 | ring->rx_mini_pending = ring->rx_mini_max_pending; |
1640 | ring->rx_pending = ring->rx_max_pending; | |
1641 | ring->rx_jumbo_pending = ring->rx_jumbo_max_pending; | |
1642 | ring->tx_pending = ring->tx_max_pending; | |
1643 | } | |
1644 | ||
1645 | static u32 myri10ge_get_rx_csum(struct net_device *netdev) | |
1646 | { | |
1647 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
99f5f87e | 1648 | |
0da34b6d BG |
1649 | if (mgp->csum_flag) |
1650 | return 1; | |
1651 | else | |
1652 | return 0; | |
1653 | } | |
1654 | ||
1655 | static int myri10ge_set_rx_csum(struct net_device *netdev, u32 csum_enabled) | |
1656 | { | |
1657 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
99f5f87e | 1658 | |
0da34b6d BG |
1659 | if (csum_enabled) |
1660 | mgp->csum_flag = MXGEFW_FLAGS_CKSUM; | |
1661 | else | |
1662 | mgp->csum_flag = 0; | |
1663 | return 0; | |
1664 | } | |
1665 | ||
4f93fde0 BG |
1666 | static int myri10ge_set_tso(struct net_device *netdev, u32 tso_enabled) |
1667 | { | |
1668 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1669 | unsigned long flags = mgp->features & (NETIF_F_TSO6 | NETIF_F_TSO); | |
1670 | ||
1671 | if (tso_enabled) | |
1672 | netdev->features |= flags; | |
1673 | else | |
1674 | netdev->features &= ~flags; | |
1675 | return 0; | |
1676 | } | |
1677 | ||
b53bef84 | 1678 | static const char myri10ge_gstrings_main_stats[][ETH_GSTRING_LEN] = { |
0da34b6d BG |
1679 | "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors", |
1680 | "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions", | |
1681 | "rx_length_errors", "rx_over_errors", "rx_crc_errors", | |
1682 | "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors", | |
1683 | "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors", | |
1684 | "tx_heartbeat_errors", "tx_window_errors", | |
1685 | /* device-specific stats */ | |
0dcffac1 | 1686 | "tx_boundary", "WC", "irq", "MSI", "MSIX", |
0da34b6d | 1687 | "read_dma_bw_MBs", "write_dma_bw_MBs", "read_write_dma_bw_MBs", |
b53bef84 | 1688 | "serial_number", "watchdog_resets", |
981813d8 BG |
1689 | #ifdef CONFIG_DCA |
1690 | "dca_capable", "dca_enabled", | |
1691 | #endif | |
c58ac5ca | 1692 | "link_changes", "link_up", "dropped_link_overflow", |
cee505db BG |
1693 | "dropped_link_error_or_filtered", |
1694 | "dropped_pause", "dropped_bad_phy", "dropped_bad_crc32", | |
1695 | "dropped_unicast_filtered", "dropped_multicast_filtered", | |
0da34b6d | 1696 | "dropped_runt", "dropped_overrun", "dropped_no_small_buffer", |
b53bef84 BG |
1697 | "dropped_no_big_buffer" |
1698 | }; | |
1699 | ||
1700 | static const char myri10ge_gstrings_slice_stats[][ETH_GSTRING_LEN] = { | |
1701 | "----------- slice ---------", | |
1702 | "tx_pkt_start", "tx_pkt_done", "tx_req", "tx_done", | |
1703 | "rx_small_cnt", "rx_big_cnt", | |
1704 | "wake_queue", "stop_queue", "tx_linearized", "LRO aggregated", | |
1705 | "LRO flushed", | |
1e6e9342 | 1706 | "LRO avg aggr", "LRO no_desc" |
0da34b6d BG |
1707 | }; |
1708 | ||
1709 | #define MYRI10GE_NET_STATS_LEN 21 | |
b53bef84 BG |
1710 | #define MYRI10GE_MAIN_STATS_LEN ARRAY_SIZE(myri10ge_gstrings_main_stats) |
1711 | #define MYRI10GE_SLICE_STATS_LEN ARRAY_SIZE(myri10ge_gstrings_slice_stats) | |
0da34b6d BG |
1712 | |
1713 | static void | |
1714 | myri10ge_get_strings(struct net_device *netdev, u32 stringset, u8 * data) | |
1715 | { | |
0dcffac1 BG |
1716 | struct myri10ge_priv *mgp = netdev_priv(netdev); |
1717 | int i; | |
1718 | ||
0da34b6d BG |
1719 | switch (stringset) { |
1720 | case ETH_SS_STATS: | |
b53bef84 BG |
1721 | memcpy(data, *myri10ge_gstrings_main_stats, |
1722 | sizeof(myri10ge_gstrings_main_stats)); | |
1723 | data += sizeof(myri10ge_gstrings_main_stats); | |
0dcffac1 BG |
1724 | for (i = 0; i < mgp->num_slices; i++) { |
1725 | memcpy(data, *myri10ge_gstrings_slice_stats, | |
1726 | sizeof(myri10ge_gstrings_slice_stats)); | |
1727 | data += sizeof(myri10ge_gstrings_slice_stats); | |
1728 | } | |
0da34b6d BG |
1729 | break; |
1730 | } | |
1731 | } | |
1732 | ||
b9f2c044 | 1733 | static int myri10ge_get_sset_count(struct net_device *netdev, int sset) |
0da34b6d | 1734 | { |
0dcffac1 BG |
1735 | struct myri10ge_priv *mgp = netdev_priv(netdev); |
1736 | ||
b9f2c044 JG |
1737 | switch (sset) { |
1738 | case ETH_SS_STATS: | |
0dcffac1 BG |
1739 | return MYRI10GE_MAIN_STATS_LEN + |
1740 | mgp->num_slices * MYRI10GE_SLICE_STATS_LEN; | |
b9f2c044 JG |
1741 | default: |
1742 | return -EOPNOTSUPP; | |
1743 | } | |
0da34b6d BG |
1744 | } |
1745 | ||
1746 | static void | |
1747 | myri10ge_get_ethtool_stats(struct net_device *netdev, | |
1748 | struct ethtool_stats *stats, u64 * data) | |
1749 | { | |
1750 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
b53bef84 | 1751 | struct myri10ge_slice_state *ss; |
0dcffac1 | 1752 | int slice; |
0da34b6d BG |
1753 | int i; |
1754 | ||
1755 | for (i = 0; i < MYRI10GE_NET_STATS_LEN; i++) | |
1756 | data[i] = ((unsigned long *)&mgp->stats)[i]; | |
1757 | ||
b53bef84 | 1758 | data[i++] = (unsigned int)mgp->tx_boundary; |
276e26c3 | 1759 | data[i++] = (unsigned int)mgp->wc_enabled; |
2c1a1088 BG |
1760 | data[i++] = (unsigned int)mgp->pdev->irq; |
1761 | data[i++] = (unsigned int)mgp->msi_enabled; | |
0dcffac1 | 1762 | data[i++] = (unsigned int)mgp->msix_enabled; |
0da34b6d BG |
1763 | data[i++] = (unsigned int)mgp->read_dma; |
1764 | data[i++] = (unsigned int)mgp->write_dma; | |
1765 | data[i++] = (unsigned int)mgp->read_write_dma; | |
1766 | data[i++] = (unsigned int)mgp->serial_number; | |
0da34b6d | 1767 | data[i++] = (unsigned int)mgp->watchdog_resets; |
981813d8 BG |
1768 | #ifdef CONFIG_DCA |
1769 | data[i++] = (unsigned int)(mgp->ss[0].dca_tag != NULL); | |
1770 | data[i++] = (unsigned int)(mgp->dca_enabled); | |
1771 | #endif | |
c58ac5ca | 1772 | data[i++] = (unsigned int)mgp->link_changes; |
b53bef84 BG |
1773 | |
1774 | /* firmware stats are useful only in the first slice */ | |
0dcffac1 | 1775 | ss = &mgp->ss[0]; |
b53bef84 BG |
1776 | data[i++] = (unsigned int)ntohl(ss->fw_stats->link_up); |
1777 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_link_overflow); | |
cee505db | 1778 | data[i++] = |
b53bef84 BG |
1779 | (unsigned int)ntohl(ss->fw_stats->dropped_link_error_or_filtered); |
1780 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_pause); | |
1781 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_bad_phy); | |
1782 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_bad_crc32); | |
1783 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_unicast_filtered); | |
85a7ea1b | 1784 | data[i++] = |
b53bef84 BG |
1785 | (unsigned int)ntohl(ss->fw_stats->dropped_multicast_filtered); |
1786 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_runt); | |
1787 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_overrun); | |
1788 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_no_small_buffer); | |
1789 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_no_big_buffer); | |
1790 | ||
0dcffac1 BG |
1791 | for (slice = 0; slice < mgp->num_slices; slice++) { |
1792 | ss = &mgp->ss[slice]; | |
1793 | data[i++] = slice; | |
1794 | data[i++] = (unsigned int)ss->tx.pkt_start; | |
1795 | data[i++] = (unsigned int)ss->tx.pkt_done; | |
1796 | data[i++] = (unsigned int)ss->tx.req; | |
1797 | data[i++] = (unsigned int)ss->tx.done; | |
1798 | data[i++] = (unsigned int)ss->rx_small.cnt; | |
1799 | data[i++] = (unsigned int)ss->rx_big.cnt; | |
1800 | data[i++] = (unsigned int)ss->tx.wake_queue; | |
1801 | data[i++] = (unsigned int)ss->tx.stop_queue; | |
1802 | data[i++] = (unsigned int)ss->tx.linearized; | |
1803 | data[i++] = ss->rx_done.lro_mgr.stats.aggregated; | |
1804 | data[i++] = ss->rx_done.lro_mgr.stats.flushed; | |
1805 | if (ss->rx_done.lro_mgr.stats.flushed) | |
1806 | data[i++] = ss->rx_done.lro_mgr.stats.aggregated / | |
1807 | ss->rx_done.lro_mgr.stats.flushed; | |
1808 | else | |
1809 | data[i++] = 0; | |
1810 | data[i++] = ss->rx_done.lro_mgr.stats.no_desc; | |
1811 | } | |
0da34b6d BG |
1812 | } |
1813 | ||
c58ac5ca BG |
1814 | static void myri10ge_set_msglevel(struct net_device *netdev, u32 value) |
1815 | { | |
1816 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1817 | mgp->msg_enable = value; | |
1818 | } | |
1819 | ||
1820 | static u32 myri10ge_get_msglevel(struct net_device *netdev) | |
1821 | { | |
1822 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1823 | return mgp->msg_enable; | |
1824 | } | |
1825 | ||
7282d491 | 1826 | static const struct ethtool_ops myri10ge_ethtool_ops = { |
0da34b6d BG |
1827 | .get_settings = myri10ge_get_settings, |
1828 | .get_drvinfo = myri10ge_get_drvinfo, | |
1829 | .get_coalesce = myri10ge_get_coalesce, | |
1830 | .set_coalesce = myri10ge_set_coalesce, | |
1831 | .get_pauseparam = myri10ge_get_pauseparam, | |
1832 | .set_pauseparam = myri10ge_set_pauseparam, | |
1833 | .get_ringparam = myri10ge_get_ringparam, | |
1834 | .get_rx_csum = myri10ge_get_rx_csum, | |
1835 | .set_rx_csum = myri10ge_set_rx_csum, | |
b10c0668 | 1836 | .set_tx_csum = ethtool_op_set_tx_hw_csum, |
0da34b6d | 1837 | .set_sg = ethtool_op_set_sg, |
4f93fde0 | 1838 | .set_tso = myri10ge_set_tso, |
6ffdd071 | 1839 | .get_link = ethtool_op_get_link, |
0da34b6d | 1840 | .get_strings = myri10ge_get_strings, |
b9f2c044 | 1841 | .get_sset_count = myri10ge_get_sset_count, |
c58ac5ca BG |
1842 | .get_ethtool_stats = myri10ge_get_ethtool_stats, |
1843 | .set_msglevel = myri10ge_set_msglevel, | |
1844 | .get_msglevel = myri10ge_get_msglevel | |
0da34b6d BG |
1845 | }; |
1846 | ||
b53bef84 | 1847 | static int myri10ge_allocate_rings(struct myri10ge_slice_state *ss) |
0da34b6d | 1848 | { |
b53bef84 | 1849 | struct myri10ge_priv *mgp = ss->mgp; |
0da34b6d | 1850 | struct myri10ge_cmd cmd; |
b53bef84 | 1851 | struct net_device *dev = mgp->dev; |
0da34b6d BG |
1852 | int tx_ring_size, rx_ring_size; |
1853 | int tx_ring_entries, rx_ring_entries; | |
0dcffac1 | 1854 | int i, slice, status; |
0da34b6d BG |
1855 | size_t bytes; |
1856 | ||
0da34b6d | 1857 | /* get ring sizes */ |
0dcffac1 BG |
1858 | slice = ss - mgp->ss; |
1859 | cmd.data0 = slice; | |
0da34b6d BG |
1860 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_RING_SIZE, &cmd, 0); |
1861 | tx_ring_size = cmd.data0; | |
0dcffac1 | 1862 | cmd.data0 = slice; |
0da34b6d | 1863 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_RX_RING_SIZE, &cmd, 0); |
355c7265 BG |
1864 | if (status != 0) |
1865 | return status; | |
0da34b6d BG |
1866 | rx_ring_size = cmd.data0; |
1867 | ||
1868 | tx_ring_entries = tx_ring_size / sizeof(struct mcp_kreq_ether_send); | |
1869 | rx_ring_entries = rx_ring_size / sizeof(struct mcp_dma_addr); | |
b53bef84 BG |
1870 | ss->tx.mask = tx_ring_entries - 1; |
1871 | ss->rx_small.mask = ss->rx_big.mask = rx_ring_entries - 1; | |
0da34b6d | 1872 | |
355c7265 BG |
1873 | status = -ENOMEM; |
1874 | ||
0da34b6d BG |
1875 | /* allocate the host shadow rings */ |
1876 | ||
1877 | bytes = 8 + (MYRI10GE_MAX_SEND_DESC_TSO + 4) | |
b53bef84 BG |
1878 | * sizeof(*ss->tx.req_list); |
1879 | ss->tx.req_bytes = kzalloc(bytes, GFP_KERNEL); | |
1880 | if (ss->tx.req_bytes == NULL) | |
0da34b6d BG |
1881 | goto abort_with_nothing; |
1882 | ||
1883 | /* ensure req_list entries are aligned to 8 bytes */ | |
b53bef84 BG |
1884 | ss->tx.req_list = (struct mcp_kreq_ether_send *) |
1885 | ALIGN((unsigned long)ss->tx.req_bytes, 8); | |
0da34b6d | 1886 | |
b53bef84 BG |
1887 | bytes = rx_ring_entries * sizeof(*ss->rx_small.shadow); |
1888 | ss->rx_small.shadow = kzalloc(bytes, GFP_KERNEL); | |
1889 | if (ss->rx_small.shadow == NULL) | |
0da34b6d BG |
1890 | goto abort_with_tx_req_bytes; |
1891 | ||
b53bef84 BG |
1892 | bytes = rx_ring_entries * sizeof(*ss->rx_big.shadow); |
1893 | ss->rx_big.shadow = kzalloc(bytes, GFP_KERNEL); | |
1894 | if (ss->rx_big.shadow == NULL) | |
0da34b6d BG |
1895 | goto abort_with_rx_small_shadow; |
1896 | ||
1897 | /* allocate the host info rings */ | |
1898 | ||
b53bef84 BG |
1899 | bytes = tx_ring_entries * sizeof(*ss->tx.info); |
1900 | ss->tx.info = kzalloc(bytes, GFP_KERNEL); | |
1901 | if (ss->tx.info == NULL) | |
0da34b6d BG |
1902 | goto abort_with_rx_big_shadow; |
1903 | ||
b53bef84 BG |
1904 | bytes = rx_ring_entries * sizeof(*ss->rx_small.info); |
1905 | ss->rx_small.info = kzalloc(bytes, GFP_KERNEL); | |
1906 | if (ss->rx_small.info == NULL) | |
0da34b6d BG |
1907 | goto abort_with_tx_info; |
1908 | ||
b53bef84 BG |
1909 | bytes = rx_ring_entries * sizeof(*ss->rx_big.info); |
1910 | ss->rx_big.info = kzalloc(bytes, GFP_KERNEL); | |
1911 | if (ss->rx_big.info == NULL) | |
0da34b6d BG |
1912 | goto abort_with_rx_small_info; |
1913 | ||
1914 | /* Fill the receive rings */ | |
b53bef84 BG |
1915 | ss->rx_big.cnt = 0; |
1916 | ss->rx_small.cnt = 0; | |
1917 | ss->rx_big.fill_cnt = 0; | |
1918 | ss->rx_small.fill_cnt = 0; | |
1919 | ss->rx_small.page_offset = MYRI10GE_ALLOC_SIZE; | |
1920 | ss->rx_big.page_offset = MYRI10GE_ALLOC_SIZE; | |
1921 | ss->rx_small.watchdog_needed = 0; | |
1922 | ss->rx_big.watchdog_needed = 0; | |
1923 | myri10ge_alloc_rx_pages(mgp, &ss->rx_small, | |
c7dab99b | 1924 | mgp->small_bytes + MXGEFW_PAD, 0); |
0da34b6d | 1925 | |
b53bef84 | 1926 | if (ss->rx_small.fill_cnt < ss->rx_small.mask + 1) { |
0dcffac1 BG |
1927 | printk(KERN_ERR |
1928 | "myri10ge: %s:slice-%d: alloced only %d small bufs\n", | |
1929 | dev->name, slice, ss->rx_small.fill_cnt); | |
c7dab99b | 1930 | goto abort_with_rx_small_ring; |
0da34b6d BG |
1931 | } |
1932 | ||
b53bef84 BG |
1933 | myri10ge_alloc_rx_pages(mgp, &ss->rx_big, mgp->big_bytes, 0); |
1934 | if (ss->rx_big.fill_cnt < ss->rx_big.mask + 1) { | |
0dcffac1 BG |
1935 | printk(KERN_ERR |
1936 | "myri10ge: %s:slice-%d: alloced only %d big bufs\n", | |
1937 | dev->name, slice, ss->rx_big.fill_cnt); | |
c7dab99b | 1938 | goto abort_with_rx_big_ring; |
0da34b6d BG |
1939 | } |
1940 | ||
1941 | return 0; | |
1942 | ||
1943 | abort_with_rx_big_ring: | |
b53bef84 BG |
1944 | for (i = ss->rx_big.cnt; i < ss->rx_big.fill_cnt; i++) { |
1945 | int idx = i & ss->rx_big.mask; | |
1946 | myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_big.info[idx], | |
c7dab99b | 1947 | mgp->big_bytes); |
b53bef84 | 1948 | put_page(ss->rx_big.info[idx].page); |
0da34b6d BG |
1949 | } |
1950 | ||
1951 | abort_with_rx_small_ring: | |
b53bef84 BG |
1952 | for (i = ss->rx_small.cnt; i < ss->rx_small.fill_cnt; i++) { |
1953 | int idx = i & ss->rx_small.mask; | |
1954 | myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_small.info[idx], | |
c7dab99b | 1955 | mgp->small_bytes + MXGEFW_PAD); |
b53bef84 | 1956 | put_page(ss->rx_small.info[idx].page); |
0da34b6d | 1957 | } |
c7dab99b | 1958 | |
b53bef84 | 1959 | kfree(ss->rx_big.info); |
0da34b6d BG |
1960 | |
1961 | abort_with_rx_small_info: | |
b53bef84 | 1962 | kfree(ss->rx_small.info); |
0da34b6d BG |
1963 | |
1964 | abort_with_tx_info: | |
b53bef84 | 1965 | kfree(ss->tx.info); |
0da34b6d BG |
1966 | |
1967 | abort_with_rx_big_shadow: | |
b53bef84 | 1968 | kfree(ss->rx_big.shadow); |
0da34b6d BG |
1969 | |
1970 | abort_with_rx_small_shadow: | |
b53bef84 | 1971 | kfree(ss->rx_small.shadow); |
0da34b6d BG |
1972 | |
1973 | abort_with_tx_req_bytes: | |
b53bef84 BG |
1974 | kfree(ss->tx.req_bytes); |
1975 | ss->tx.req_bytes = NULL; | |
1976 | ss->tx.req_list = NULL; | |
0da34b6d BG |
1977 | |
1978 | abort_with_nothing: | |
1979 | return status; | |
1980 | } | |
1981 | ||
b53bef84 | 1982 | static void myri10ge_free_rings(struct myri10ge_slice_state *ss) |
0da34b6d | 1983 | { |
b53bef84 | 1984 | struct myri10ge_priv *mgp = ss->mgp; |
0da34b6d BG |
1985 | struct sk_buff *skb; |
1986 | struct myri10ge_tx_buf *tx; | |
1987 | int i, len, idx; | |
1988 | ||
0dcffac1 BG |
1989 | /* If not allocated, skip it */ |
1990 | if (ss->tx.req_list == NULL) | |
1991 | return; | |
1992 | ||
b53bef84 BG |
1993 | for (i = ss->rx_big.cnt; i < ss->rx_big.fill_cnt; i++) { |
1994 | idx = i & ss->rx_big.mask; | |
1995 | if (i == ss->rx_big.fill_cnt - 1) | |
1996 | ss->rx_big.info[idx].page_offset = MYRI10GE_ALLOC_SIZE; | |
1997 | myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_big.info[idx], | |
c7dab99b | 1998 | mgp->big_bytes); |
b53bef84 | 1999 | put_page(ss->rx_big.info[idx].page); |
0da34b6d BG |
2000 | } |
2001 | ||
b53bef84 BG |
2002 | for (i = ss->rx_small.cnt; i < ss->rx_small.fill_cnt; i++) { |
2003 | idx = i & ss->rx_small.mask; | |
2004 | if (i == ss->rx_small.fill_cnt - 1) | |
2005 | ss->rx_small.info[idx].page_offset = | |
c7dab99b | 2006 | MYRI10GE_ALLOC_SIZE; |
b53bef84 | 2007 | myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_small.info[idx], |
c7dab99b | 2008 | mgp->small_bytes + MXGEFW_PAD); |
b53bef84 | 2009 | put_page(ss->rx_small.info[idx].page); |
c7dab99b | 2010 | } |
b53bef84 | 2011 | tx = &ss->tx; |
0da34b6d BG |
2012 | while (tx->done != tx->req) { |
2013 | idx = tx->done & tx->mask; | |
2014 | skb = tx->info[idx].skb; | |
2015 | ||
2016 | /* Mark as free */ | |
2017 | tx->info[idx].skb = NULL; | |
2018 | tx->done++; | |
2019 | len = pci_unmap_len(&tx->info[idx], len); | |
2020 | pci_unmap_len_set(&tx->info[idx], len, 0); | |
2021 | if (skb) { | |
b53bef84 | 2022 | ss->stats.tx_dropped++; |
0da34b6d BG |
2023 | dev_kfree_skb_any(skb); |
2024 | if (len) | |
2025 | pci_unmap_single(mgp->pdev, | |
2026 | pci_unmap_addr(&tx->info[idx], | |
2027 | bus), len, | |
2028 | PCI_DMA_TODEVICE); | |
2029 | } else { | |
2030 | if (len) | |
2031 | pci_unmap_page(mgp->pdev, | |
2032 | pci_unmap_addr(&tx->info[idx], | |
2033 | bus), len, | |
2034 | PCI_DMA_TODEVICE); | |
2035 | } | |
2036 | } | |
b53bef84 | 2037 | kfree(ss->rx_big.info); |
0da34b6d | 2038 | |
b53bef84 | 2039 | kfree(ss->rx_small.info); |
0da34b6d | 2040 | |
b53bef84 | 2041 | kfree(ss->tx.info); |
0da34b6d | 2042 | |
b53bef84 | 2043 | kfree(ss->rx_big.shadow); |
0da34b6d | 2044 | |
b53bef84 | 2045 | kfree(ss->rx_small.shadow); |
0da34b6d | 2046 | |
b53bef84 BG |
2047 | kfree(ss->tx.req_bytes); |
2048 | ss->tx.req_bytes = NULL; | |
2049 | ss->tx.req_list = NULL; | |
0da34b6d BG |
2050 | } |
2051 | ||
df30a740 BG |
2052 | static int myri10ge_request_irq(struct myri10ge_priv *mgp) |
2053 | { | |
2054 | struct pci_dev *pdev = mgp->pdev; | |
0dcffac1 BG |
2055 | struct myri10ge_slice_state *ss; |
2056 | struct net_device *netdev = mgp->dev; | |
2057 | int i; | |
df30a740 BG |
2058 | int status; |
2059 | ||
0dcffac1 BG |
2060 | mgp->msi_enabled = 0; |
2061 | mgp->msix_enabled = 0; | |
2062 | status = 0; | |
df30a740 | 2063 | if (myri10ge_msi) { |
0dcffac1 BG |
2064 | if (mgp->num_slices > 1) { |
2065 | status = | |
2066 | pci_enable_msix(pdev, mgp->msix_vectors, | |
2067 | mgp->num_slices); | |
2068 | if (status == 0) { | |
2069 | mgp->msix_enabled = 1; | |
2070 | } else { | |
2071 | dev_err(&pdev->dev, | |
2072 | "Error %d setting up MSI-X\n", status); | |
2073 | return status; | |
2074 | } | |
2075 | } | |
2076 | if (mgp->msix_enabled == 0) { | |
2077 | status = pci_enable_msi(pdev); | |
2078 | if (status != 0) { | |
2079 | dev_err(&pdev->dev, | |
2080 | "Error %d setting up MSI; falling back to xPIC\n", | |
2081 | status); | |
2082 | } else { | |
2083 | mgp->msi_enabled = 1; | |
2084 | } | |
2085 | } | |
df30a740 | 2086 | } |
0dcffac1 BG |
2087 | if (mgp->msix_enabled) { |
2088 | for (i = 0; i < mgp->num_slices; i++) { | |
2089 | ss = &mgp->ss[i]; | |
2090 | snprintf(ss->irq_desc, sizeof(ss->irq_desc), | |
2091 | "%s:slice-%d", netdev->name, i); | |
2092 | status = request_irq(mgp->msix_vectors[i].vector, | |
2093 | myri10ge_intr, 0, ss->irq_desc, | |
2094 | ss); | |
2095 | if (status != 0) { | |
2096 | dev_err(&pdev->dev, | |
2097 | "slice %d failed to allocate IRQ\n", i); | |
2098 | i--; | |
2099 | while (i >= 0) { | |
2100 | free_irq(mgp->msix_vectors[i].vector, | |
2101 | &mgp->ss[i]); | |
2102 | i--; | |
2103 | } | |
2104 | pci_disable_msix(pdev); | |
2105 | return status; | |
2106 | } | |
2107 | } | |
2108 | } else { | |
2109 | status = request_irq(pdev->irq, myri10ge_intr, IRQF_SHARED, | |
2110 | mgp->dev->name, &mgp->ss[0]); | |
2111 | if (status != 0) { | |
2112 | dev_err(&pdev->dev, "failed to allocate IRQ\n"); | |
2113 | if (mgp->msi_enabled) | |
2114 | pci_disable_msi(pdev); | |
2115 | } | |
df30a740 BG |
2116 | } |
2117 | return status; | |
2118 | } | |
2119 | ||
2120 | static void myri10ge_free_irq(struct myri10ge_priv *mgp) | |
2121 | { | |
2122 | struct pci_dev *pdev = mgp->pdev; | |
0dcffac1 | 2123 | int i; |
df30a740 | 2124 | |
0dcffac1 BG |
2125 | if (mgp->msix_enabled) { |
2126 | for (i = 0; i < mgp->num_slices; i++) | |
2127 | free_irq(mgp->msix_vectors[i].vector, &mgp->ss[i]); | |
2128 | } else { | |
2129 | free_irq(pdev->irq, &mgp->ss[0]); | |
2130 | } | |
df30a740 BG |
2131 | if (mgp->msi_enabled) |
2132 | pci_disable_msi(pdev); | |
0dcffac1 BG |
2133 | if (mgp->msix_enabled) |
2134 | pci_disable_msix(pdev); | |
df30a740 BG |
2135 | } |
2136 | ||
1e6e9342 AG |
2137 | static int |
2138 | myri10ge_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr, | |
2139 | void **ip_hdr, void **tcpudp_hdr, | |
2140 | u64 * hdr_flags, void *priv) | |
2141 | { | |
2142 | struct ethhdr *eh; | |
2143 | struct vlan_ethhdr *veh; | |
2144 | struct iphdr *iph; | |
2145 | u8 *va = page_address(frag->page) + frag->page_offset; | |
2146 | unsigned long ll_hlen; | |
66341fff AV |
2147 | /* passed opaque through lro_receive_frags() */ |
2148 | __wsum csum = (__force __wsum) (unsigned long)priv; | |
1e6e9342 AG |
2149 | |
2150 | /* find the mac header, aborting if not IPv4 */ | |
2151 | ||
2152 | eh = (struct ethhdr *)va; | |
2153 | *mac_hdr = eh; | |
2154 | ll_hlen = ETH_HLEN; | |
2155 | if (eh->h_proto != htons(ETH_P_IP)) { | |
2156 | if (eh->h_proto == htons(ETH_P_8021Q)) { | |
2157 | veh = (struct vlan_ethhdr *)va; | |
2158 | if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP)) | |
2159 | return -1; | |
2160 | ||
2161 | ll_hlen += VLAN_HLEN; | |
2162 | ||
2163 | /* | |
2164 | * HW checksum starts ETH_HLEN bytes into | |
2165 | * frame, so we must subtract off the VLAN | |
2166 | * header's checksum before csum can be used | |
2167 | */ | |
2168 | csum = csum_sub(csum, csum_partial(va + ETH_HLEN, | |
2169 | VLAN_HLEN, 0)); | |
2170 | } else { | |
2171 | return -1; | |
2172 | } | |
2173 | } | |
2174 | *hdr_flags = LRO_IPV4; | |
2175 | ||
2176 | iph = (struct iphdr *)(va + ll_hlen); | |
2177 | *ip_hdr = iph; | |
2178 | if (iph->protocol != IPPROTO_TCP) | |
2179 | return -1; | |
2180 | *hdr_flags |= LRO_TCP; | |
2181 | *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2); | |
2182 | ||
2183 | /* verify the IP checksum */ | |
2184 | if (unlikely(ip_fast_csum((u8 *) iph, iph->ihl))) | |
2185 | return -1; | |
2186 | ||
2187 | /* verify the checksum */ | |
2188 | if (unlikely(csum_tcpudp_magic(iph->saddr, iph->daddr, | |
2189 | ntohs(iph->tot_len) - (iph->ihl << 2), | |
2190 | IPPROTO_TCP, csum))) | |
2191 | return -1; | |
2192 | ||
2193 | return 0; | |
2194 | } | |
2195 | ||
77929732 BG |
2196 | static int myri10ge_get_txrx(struct myri10ge_priv *mgp, int slice) |
2197 | { | |
2198 | struct myri10ge_cmd cmd; | |
2199 | struct myri10ge_slice_state *ss; | |
2200 | int status; | |
2201 | ||
2202 | ss = &mgp->ss[slice]; | |
2203 | cmd.data0 = 0; /* single slice for now */ | |
2204 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_OFFSET, &cmd, 0); | |
2205 | ss->tx.lanai = (struct mcp_kreq_ether_send __iomem *) | |
2206 | (mgp->sram + cmd.data0); | |
2207 | ||
2208 | cmd.data0 = slice; | |
2209 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SMALL_RX_OFFSET, | |
2210 | &cmd, 0); | |
2211 | ss->rx_small.lanai = (struct mcp_kreq_ether_recv __iomem *) | |
2212 | (mgp->sram + cmd.data0); | |
2213 | ||
2214 | cmd.data0 = slice; | |
2215 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_BIG_RX_OFFSET, &cmd, 0); | |
2216 | ss->rx_big.lanai = (struct mcp_kreq_ether_recv __iomem *) | |
2217 | (mgp->sram + cmd.data0); | |
2218 | ||
77929732 BG |
2219 | return status; |
2220 | ||
2221 | } | |
2222 | ||
2223 | static int myri10ge_set_stats(struct myri10ge_priv *mgp, int slice) | |
2224 | { | |
2225 | struct myri10ge_cmd cmd; | |
2226 | struct myri10ge_slice_state *ss; | |
2227 | int status; | |
2228 | ||
2229 | ss = &mgp->ss[slice]; | |
2230 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(ss->fw_stats_bus); | |
2231 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(ss->fw_stats_bus); | |
2232 | cmd.data2 = sizeof(struct mcp_irq_data); | |
2233 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_STATS_DMA_V2, &cmd, 0); | |
2234 | if (status == -ENOSYS) { | |
2235 | dma_addr_t bus = ss->fw_stats_bus; | |
2236 | if (slice != 0) | |
2237 | return -EINVAL; | |
2238 | bus += offsetof(struct mcp_irq_data, send_done_count); | |
2239 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(bus); | |
2240 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(bus); | |
2241 | status = myri10ge_send_cmd(mgp, | |
2242 | MXGEFW_CMD_SET_STATS_DMA_OBSOLETE, | |
2243 | &cmd, 0); | |
2244 | /* Firmware cannot support multicast without STATS_DMA_V2 */ | |
2245 | mgp->fw_multicast_support = 0; | |
2246 | } else { | |
2247 | mgp->fw_multicast_support = 1; | |
2248 | } | |
2249 | return 0; | |
2250 | } | |
77929732 | 2251 | |
0da34b6d BG |
2252 | static int myri10ge_open(struct net_device *dev) |
2253 | { | |
0dcffac1 | 2254 | struct myri10ge_slice_state *ss; |
b53bef84 | 2255 | struct myri10ge_priv *mgp = netdev_priv(dev); |
0da34b6d | 2256 | struct myri10ge_cmd cmd; |
0dcffac1 BG |
2257 | int i, status, big_pow2, slice; |
2258 | u8 *itable; | |
1e6e9342 | 2259 | struct net_lro_mgr *lro_mgr; |
0da34b6d | 2260 | |
0da34b6d BG |
2261 | if (mgp->running != MYRI10GE_ETH_STOPPED) |
2262 | return -EBUSY; | |
2263 | ||
2264 | mgp->running = MYRI10GE_ETH_STARTING; | |
2265 | status = myri10ge_reset(mgp); | |
2266 | if (status != 0) { | |
2267 | printk(KERN_ERR "myri10ge: %s: failed reset\n", dev->name); | |
df30a740 | 2268 | goto abort_with_nothing; |
0da34b6d BG |
2269 | } |
2270 | ||
0dcffac1 BG |
2271 | if (mgp->num_slices > 1) { |
2272 | cmd.data0 = mgp->num_slices; | |
2273 | cmd.data1 = 1; /* use MSI-X */ | |
2274 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ENABLE_RSS_QUEUES, | |
2275 | &cmd, 0); | |
2276 | if (status != 0) { | |
2277 | printk(KERN_ERR | |
2278 | "myri10ge: %s: failed to set number of slices\n", | |
2279 | dev->name); | |
2280 | goto abort_with_nothing; | |
2281 | } | |
2282 | /* setup the indirection table */ | |
2283 | cmd.data0 = mgp->num_slices; | |
2284 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_RSS_TABLE_SIZE, | |
2285 | &cmd, 0); | |
2286 | ||
2287 | status |= myri10ge_send_cmd(mgp, | |
2288 | MXGEFW_CMD_GET_RSS_TABLE_OFFSET, | |
2289 | &cmd, 0); | |
2290 | if (status != 0) { | |
2291 | printk(KERN_ERR | |
2292 | "myri10ge: %s: failed to setup rss tables\n", | |
2293 | dev->name); | |
2294 | } | |
2295 | ||
2296 | /* just enable an identity mapping */ | |
2297 | itable = mgp->sram + cmd.data0; | |
2298 | for (i = 0; i < mgp->num_slices; i++) | |
2299 | __raw_writeb(i, &itable[i]); | |
2300 | ||
2301 | cmd.data0 = 1; | |
2302 | cmd.data1 = myri10ge_rss_hash; | |
2303 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_RSS_ENABLE, | |
2304 | &cmd, 0); | |
2305 | if (status != 0) { | |
2306 | printk(KERN_ERR | |
2307 | "myri10ge: %s: failed to enable slices\n", | |
2308 | dev->name); | |
2309 | goto abort_with_nothing; | |
2310 | } | |
2311 | } | |
2312 | ||
df30a740 BG |
2313 | status = myri10ge_request_irq(mgp); |
2314 | if (status != 0) | |
2315 | goto abort_with_nothing; | |
2316 | ||
0da34b6d BG |
2317 | /* decide what small buffer size to use. For good TCP rx |
2318 | * performance, it is important to not receive 1514 byte | |
2319 | * frames into jumbo buffers, as it confuses the socket buffer | |
2320 | * accounting code, leading to drops and erratic performance. | |
2321 | */ | |
2322 | ||
2323 | if (dev->mtu <= ETH_DATA_LEN) | |
c7dab99b BG |
2324 | /* enough for a TCP header */ |
2325 | mgp->small_bytes = (128 > SMP_CACHE_BYTES) | |
2326 | ? (128 - MXGEFW_PAD) | |
2327 | : (SMP_CACHE_BYTES - MXGEFW_PAD); | |
0da34b6d | 2328 | else |
de3c4507 BG |
2329 | /* enough for a vlan encapsulated ETH_DATA_LEN frame */ |
2330 | mgp->small_bytes = VLAN_ETH_FRAME_LEN; | |
0da34b6d BG |
2331 | |
2332 | /* Override the small buffer size? */ | |
2333 | if (myri10ge_small_bytes > 0) | |
2334 | mgp->small_bytes = myri10ge_small_bytes; | |
2335 | ||
0da34b6d BG |
2336 | /* Firmware needs the big buff size as a power of 2. Lie and |
2337 | * tell him the buffer is larger, because we only use 1 | |
2338 | * buffer/pkt, and the mtu will prevent overruns. | |
2339 | */ | |
13348bee | 2340 | big_pow2 = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD; |
c7dab99b | 2341 | if (big_pow2 < MYRI10GE_ALLOC_SIZE / 2) { |
199126a2 | 2342 | while (!is_power_of_2(big_pow2)) |
c7dab99b | 2343 | big_pow2++; |
13348bee | 2344 | mgp->big_bytes = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD; |
c7dab99b BG |
2345 | } else { |
2346 | big_pow2 = MYRI10GE_ALLOC_SIZE; | |
2347 | mgp->big_bytes = big_pow2; | |
2348 | } | |
2349 | ||
0dcffac1 BG |
2350 | /* setup the per-slice data structures */ |
2351 | for (slice = 0; slice < mgp->num_slices; slice++) { | |
2352 | ss = &mgp->ss[slice]; | |
2353 | ||
2354 | status = myri10ge_get_txrx(mgp, slice); | |
2355 | if (status != 0) { | |
2356 | printk(KERN_ERR | |
2357 | "myri10ge: %s: failed to get ring sizes or locations\n", | |
2358 | dev->name); | |
2359 | goto abort_with_rings; | |
2360 | } | |
2361 | status = myri10ge_allocate_rings(ss); | |
2362 | if (status != 0) | |
2363 | goto abort_with_rings; | |
2364 | if (slice == 0) | |
2365 | status = myri10ge_set_stats(mgp, slice); | |
2366 | if (status) { | |
2367 | printk(KERN_ERR | |
2368 | "myri10ge: %s: Couldn't set stats DMA\n", | |
2369 | dev->name); | |
2370 | goto abort_with_rings; | |
2371 | } | |
2372 | ||
2373 | lro_mgr = &ss->rx_done.lro_mgr; | |
2374 | lro_mgr->dev = dev; | |
2375 | lro_mgr->features = LRO_F_NAPI; | |
2376 | lro_mgr->ip_summed = CHECKSUM_COMPLETE; | |
2377 | lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY; | |
2378 | lro_mgr->max_desc = MYRI10GE_MAX_LRO_DESCRIPTORS; | |
2379 | lro_mgr->lro_arr = ss->rx_done.lro_desc; | |
2380 | lro_mgr->get_frag_header = myri10ge_get_frag_header; | |
2381 | lro_mgr->max_aggr = myri10ge_lro_max_pkts; | |
2382 | if (lro_mgr->max_aggr > MAX_SKB_FRAGS) | |
2383 | lro_mgr->max_aggr = MAX_SKB_FRAGS; | |
2384 | ||
2385 | /* must happen prior to any irq */ | |
2386 | napi_enable(&(ss)->napi); | |
2387 | } | |
0da34b6d BG |
2388 | |
2389 | /* now give firmware buffers sizes, and MTU */ | |
2390 | cmd.data0 = dev->mtu + ETH_HLEN + VLAN_HLEN; | |
2391 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_MTU, &cmd, 0); | |
2392 | cmd.data0 = mgp->small_bytes; | |
2393 | status |= | |
2394 | myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_SMALL_BUFFER_SIZE, &cmd, 0); | |
2395 | cmd.data0 = big_pow2; | |
2396 | status |= | |
2397 | myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_BIG_BUFFER_SIZE, &cmd, 0); | |
2398 | if (status) { | |
2399 | printk(KERN_ERR "myri10ge: %s: Couldn't set buffer sizes\n", | |
2400 | dev->name); | |
2401 | goto abort_with_rings; | |
2402 | } | |
2403 | ||
0dcffac1 BG |
2404 | /* |
2405 | * Set Linux style TSO mode; this is needed only on newer | |
2406 | * firmware versions. Older versions default to Linux | |
2407 | * style TSO | |
2408 | */ | |
2409 | cmd.data0 = 0; | |
2410 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_TSO_MODE, &cmd, 0); | |
2411 | if (status && status != -ENOSYS) { | |
2412 | printk(KERN_ERR "myri10ge: %s: Couldn't set TSO mode\n", | |
0da34b6d BG |
2413 | dev->name); |
2414 | goto abort_with_rings; | |
2415 | } | |
2416 | ||
66341fff | 2417 | mgp->link_state = ~0U; |
0da34b6d BG |
2418 | mgp->rdma_tags_available = 15; |
2419 | ||
0da34b6d BG |
2420 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_UP, &cmd, 0); |
2421 | if (status) { | |
2422 | printk(KERN_ERR "myri10ge: %s: Couldn't bring up link\n", | |
2423 | dev->name); | |
2424 | goto abort_with_rings; | |
2425 | } | |
2426 | ||
0da34b6d BG |
2427 | mgp->running = MYRI10GE_ETH_RUNNING; |
2428 | mgp->watchdog_timer.expires = jiffies + myri10ge_watchdog_timeout * HZ; | |
2429 | add_timer(&mgp->watchdog_timer); | |
2430 | netif_wake_queue(dev); | |
2431 | return 0; | |
2432 | ||
2433 | abort_with_rings: | |
0dcffac1 BG |
2434 | for (i = 0; i < mgp->num_slices; i++) |
2435 | myri10ge_free_rings(&mgp->ss[i]); | |
0da34b6d | 2436 | |
df30a740 BG |
2437 | myri10ge_free_irq(mgp); |
2438 | ||
0da34b6d BG |
2439 | abort_with_nothing: |
2440 | mgp->running = MYRI10GE_ETH_STOPPED; | |
2441 | return -ENOMEM; | |
2442 | } | |
2443 | ||
2444 | static int myri10ge_close(struct net_device *dev) | |
2445 | { | |
b53bef84 | 2446 | struct myri10ge_priv *mgp = netdev_priv(dev); |
0da34b6d BG |
2447 | struct myri10ge_cmd cmd; |
2448 | int status, old_down_cnt; | |
0dcffac1 | 2449 | int i; |
0da34b6d | 2450 | |
0da34b6d BG |
2451 | if (mgp->running != MYRI10GE_ETH_RUNNING) |
2452 | return 0; | |
2453 | ||
0dcffac1 | 2454 | if (mgp->ss[0].tx.req_bytes == NULL) |
0da34b6d BG |
2455 | return 0; |
2456 | ||
2457 | del_timer_sync(&mgp->watchdog_timer); | |
2458 | mgp->running = MYRI10GE_ETH_STOPPING; | |
0dcffac1 BG |
2459 | for (i = 0; i < mgp->num_slices; i++) { |
2460 | napi_disable(&mgp->ss[i].napi); | |
2461 | } | |
0da34b6d BG |
2462 | netif_carrier_off(dev); |
2463 | netif_stop_queue(dev); | |
2464 | old_down_cnt = mgp->down_cnt; | |
2465 | mb(); | |
2466 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_DOWN, &cmd, 0); | |
2467 | if (status) | |
2468 | printk(KERN_ERR "myri10ge: %s: Couldn't bring down link\n", | |
2469 | dev->name); | |
2470 | ||
2471 | wait_event_timeout(mgp->down_wq, old_down_cnt != mgp->down_cnt, HZ); | |
2472 | if (old_down_cnt == mgp->down_cnt) | |
2473 | printk(KERN_ERR "myri10ge: %s never got down irq\n", dev->name); | |
2474 | ||
2475 | netif_tx_disable(dev); | |
df30a740 | 2476 | myri10ge_free_irq(mgp); |
0dcffac1 BG |
2477 | for (i = 0; i < mgp->num_slices; i++) |
2478 | myri10ge_free_rings(&mgp->ss[i]); | |
0da34b6d BG |
2479 | |
2480 | mgp->running = MYRI10GE_ETH_STOPPED; | |
2481 | return 0; | |
2482 | } | |
2483 | ||
2484 | /* copy an array of struct mcp_kreq_ether_send's to the mcp. Copy | |
2485 | * backwards one at a time and handle ring wraps */ | |
2486 | ||
2487 | static inline void | |
2488 | myri10ge_submit_req_backwards(struct myri10ge_tx_buf *tx, | |
2489 | struct mcp_kreq_ether_send *src, int cnt) | |
2490 | { | |
2491 | int idx, starting_slot; | |
2492 | starting_slot = tx->req; | |
2493 | while (cnt > 1) { | |
2494 | cnt--; | |
2495 | idx = (starting_slot + cnt) & tx->mask; | |
2496 | myri10ge_pio_copy(&tx->lanai[idx], &src[cnt], sizeof(*src)); | |
2497 | mb(); | |
2498 | } | |
2499 | } | |
2500 | ||
2501 | /* | |
2502 | * copy an array of struct mcp_kreq_ether_send's to the mcp. Copy | |
2503 | * at most 32 bytes at a time, so as to avoid involving the software | |
2504 | * pio handler in the nic. We re-write the first segment's flags | |
2505 | * to mark them valid only after writing the entire chain. | |
2506 | */ | |
2507 | ||
2508 | static inline void | |
2509 | myri10ge_submit_req(struct myri10ge_tx_buf *tx, struct mcp_kreq_ether_send *src, | |
2510 | int cnt) | |
2511 | { | |
2512 | int idx, i; | |
2513 | struct mcp_kreq_ether_send __iomem *dstp, *dst; | |
2514 | struct mcp_kreq_ether_send *srcp; | |
2515 | u8 last_flags; | |
2516 | ||
2517 | idx = tx->req & tx->mask; | |
2518 | ||
2519 | last_flags = src->flags; | |
2520 | src->flags = 0; | |
2521 | mb(); | |
2522 | dst = dstp = &tx->lanai[idx]; | |
2523 | srcp = src; | |
2524 | ||
2525 | if ((idx + cnt) < tx->mask) { | |
2526 | for (i = 0; i < (cnt - 1); i += 2) { | |
2527 | myri10ge_pio_copy(dstp, srcp, 2 * sizeof(*src)); | |
2528 | mb(); /* force write every 32 bytes */ | |
2529 | srcp += 2; | |
2530 | dstp += 2; | |
2531 | } | |
2532 | } else { | |
2533 | /* submit all but the first request, and ensure | |
2534 | * that it is submitted below */ | |
2535 | myri10ge_submit_req_backwards(tx, src, cnt); | |
2536 | i = 0; | |
2537 | } | |
2538 | if (i < cnt) { | |
2539 | /* submit the first request */ | |
2540 | myri10ge_pio_copy(dstp, srcp, sizeof(*src)); | |
2541 | mb(); /* barrier before setting valid flag */ | |
2542 | } | |
2543 | ||
2544 | /* re-write the last 32-bits with the valid flags */ | |
2545 | src->flags = last_flags; | |
40f6cff5 | 2546 | put_be32(*((__be32 *) src + 3), (__be32 __iomem *) dst + 3); |
0da34b6d BG |
2547 | tx->req += cnt; |
2548 | mb(); | |
2549 | } | |
2550 | ||
0da34b6d BG |
2551 | /* |
2552 | * Transmit a packet. We need to split the packet so that a single | |
b53bef84 | 2553 | * segment does not cross myri10ge->tx_boundary, so this makes segment |
0da34b6d BG |
2554 | * counting tricky. So rather than try to count segments up front, we |
2555 | * just give up if there are too few segments to hold a reasonably | |
2556 | * fragmented packet currently available. If we run | |
2557 | * out of segments while preparing a packet for DMA, we just linearize | |
2558 | * it and try again. | |
2559 | */ | |
2560 | ||
2561 | static int myri10ge_xmit(struct sk_buff *skb, struct net_device *dev) | |
2562 | { | |
2563 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
b53bef84 | 2564 | struct myri10ge_slice_state *ss; |
0da34b6d | 2565 | struct mcp_kreq_ether_send *req; |
b53bef84 | 2566 | struct myri10ge_tx_buf *tx; |
0da34b6d BG |
2567 | struct skb_frag_struct *frag; |
2568 | dma_addr_t bus; | |
40f6cff5 AV |
2569 | u32 low; |
2570 | __be32 high_swapped; | |
0da34b6d BG |
2571 | unsigned int len; |
2572 | int idx, last_idx, avail, frag_cnt, frag_idx, count, mss, max_segments; | |
2573 | u16 pseudo_hdr_offset, cksum_offset; | |
2574 | int cum_len, seglen, boundary, rdma_count; | |
2575 | u8 flags, odd_flag; | |
2576 | ||
b53bef84 | 2577 | /* always transmit through slot 0 */ |
0dcffac1 | 2578 | ss = mgp->ss; |
b53bef84 | 2579 | tx = &ss->tx; |
0da34b6d BG |
2580 | again: |
2581 | req = tx->req_list; | |
2582 | avail = tx->mask - 1 - (tx->req - tx->done); | |
2583 | ||
2584 | mss = 0; | |
2585 | max_segments = MXGEFW_MAX_SEND_DESC; | |
2586 | ||
917690cd | 2587 | if (skb_is_gso(skb)) { |
7967168c | 2588 | mss = skb_shinfo(skb)->gso_size; |
917690cd | 2589 | max_segments = MYRI10GE_MAX_SEND_DESC_TSO; |
0da34b6d | 2590 | } |
0da34b6d BG |
2591 | |
2592 | if ((unlikely(avail < max_segments))) { | |
2593 | /* we are out of transmit resources */ | |
b53bef84 | 2594 | tx->stop_queue++; |
0da34b6d BG |
2595 | netif_stop_queue(dev); |
2596 | return 1; | |
2597 | } | |
2598 | ||
2599 | /* Setup checksum offloading, if needed */ | |
2600 | cksum_offset = 0; | |
2601 | pseudo_hdr_offset = 0; | |
2602 | odd_flag = 0; | |
2603 | flags = (MXGEFW_FLAGS_NO_TSO | MXGEFW_FLAGS_FIRST); | |
84fa7933 | 2604 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
ea2ae17d | 2605 | cksum_offset = skb_transport_offset(skb); |
ff1dcadb | 2606 | pseudo_hdr_offset = cksum_offset + skb->csum_offset; |
0da34b6d BG |
2607 | /* If the headers are excessively large, then we must |
2608 | * fall back to a software checksum */ | |
4f93fde0 BG |
2609 | if (unlikely(!mss && (cksum_offset > 255 || |
2610 | pseudo_hdr_offset > 127))) { | |
84fa7933 | 2611 | if (skb_checksum_help(skb)) |
0da34b6d BG |
2612 | goto drop; |
2613 | cksum_offset = 0; | |
2614 | pseudo_hdr_offset = 0; | |
2615 | } else { | |
0da34b6d BG |
2616 | odd_flag = MXGEFW_FLAGS_ALIGN_ODD; |
2617 | flags |= MXGEFW_FLAGS_CKSUM; | |
2618 | } | |
2619 | } | |
2620 | ||
2621 | cum_len = 0; | |
2622 | ||
0da34b6d BG |
2623 | if (mss) { /* TSO */ |
2624 | /* this removes any CKSUM flag from before */ | |
2625 | flags = (MXGEFW_FLAGS_TSO_HDR | MXGEFW_FLAGS_FIRST); | |
2626 | ||
2627 | /* negative cum_len signifies to the | |
2628 | * send loop that we are still in the | |
2629 | * header portion of the TSO packet. | |
4f93fde0 | 2630 | * TSO header can be at most 1KB long */ |
ab6a5bb6 | 2631 | cum_len = -(skb_transport_offset(skb) + tcp_hdrlen(skb)); |
0da34b6d | 2632 | |
4f93fde0 BG |
2633 | /* for IPv6 TSO, the checksum offset stores the |
2634 | * TCP header length, to save the firmware from | |
2635 | * the need to parse the headers */ | |
2636 | if (skb_is_gso_v6(skb)) { | |
2637 | cksum_offset = tcp_hdrlen(skb); | |
2638 | /* Can only handle headers <= max_tso6 long */ | |
2639 | if (unlikely(-cum_len > mgp->max_tso6)) | |
2640 | return myri10ge_sw_tso(skb, dev); | |
2641 | } | |
0da34b6d BG |
2642 | /* for TSO, pseudo_hdr_offset holds mss. |
2643 | * The firmware figures out where to put | |
2644 | * the checksum by parsing the header. */ | |
40f6cff5 | 2645 | pseudo_hdr_offset = mss; |
0da34b6d | 2646 | } else |
0da34b6d BG |
2647 | /* Mark small packets, and pad out tiny packets */ |
2648 | if (skb->len <= MXGEFW_SEND_SMALL_SIZE) { | |
2649 | flags |= MXGEFW_FLAGS_SMALL; | |
2650 | ||
2651 | /* pad frames to at least ETH_ZLEN bytes */ | |
2652 | if (unlikely(skb->len < ETH_ZLEN)) { | |
5b057c6b | 2653 | if (skb_padto(skb, ETH_ZLEN)) { |
0da34b6d BG |
2654 | /* The packet is gone, so we must |
2655 | * return 0 */ | |
b53bef84 | 2656 | ss->stats.tx_dropped += 1; |
0da34b6d BG |
2657 | return 0; |
2658 | } | |
2659 | /* adjust the len to account for the zero pad | |
2660 | * so that the nic can know how long it is */ | |
2661 | skb->len = ETH_ZLEN; | |
2662 | } | |
2663 | } | |
2664 | ||
2665 | /* map the skb for DMA */ | |
2666 | len = skb->len - skb->data_len; | |
2667 | idx = tx->req & tx->mask; | |
2668 | tx->info[idx].skb = skb; | |
2669 | bus = pci_map_single(mgp->pdev, skb->data, len, PCI_DMA_TODEVICE); | |
2670 | pci_unmap_addr_set(&tx->info[idx], bus, bus); | |
2671 | pci_unmap_len_set(&tx->info[idx], len, len); | |
2672 | ||
2673 | frag_cnt = skb_shinfo(skb)->nr_frags; | |
2674 | frag_idx = 0; | |
2675 | count = 0; | |
2676 | rdma_count = 0; | |
2677 | ||
2678 | /* "rdma_count" is the number of RDMAs belonging to the | |
2679 | * current packet BEFORE the current send request. For | |
2680 | * non-TSO packets, this is equal to "count". | |
2681 | * For TSO packets, rdma_count needs to be reset | |
2682 | * to 0 after a segment cut. | |
2683 | * | |
2684 | * The rdma_count field of the send request is | |
2685 | * the number of RDMAs of the packet starting at | |
2686 | * that request. For TSO send requests with one ore more cuts | |
2687 | * in the middle, this is the number of RDMAs starting | |
2688 | * after the last cut in the request. All previous | |
2689 | * segments before the last cut implicitly have 1 RDMA. | |
2690 | * | |
2691 | * Since the number of RDMAs is not known beforehand, | |
2692 | * it must be filled-in retroactively - after each | |
2693 | * segmentation cut or at the end of the entire packet. | |
2694 | */ | |
2695 | ||
2696 | while (1) { | |
2697 | /* Break the SKB or Fragment up into pieces which | |
b53bef84 | 2698 | * do not cross mgp->tx_boundary */ |
0da34b6d BG |
2699 | low = MYRI10GE_LOWPART_TO_U32(bus); |
2700 | high_swapped = htonl(MYRI10GE_HIGHPART_TO_U32(bus)); | |
2701 | while (len) { | |
2702 | u8 flags_next; | |
2703 | int cum_len_next; | |
2704 | ||
2705 | if (unlikely(count == max_segments)) | |
2706 | goto abort_linearize; | |
2707 | ||
b53bef84 BG |
2708 | boundary = |
2709 | (low + mgp->tx_boundary) & ~(mgp->tx_boundary - 1); | |
0da34b6d BG |
2710 | seglen = boundary - low; |
2711 | if (seglen > len) | |
2712 | seglen = len; | |
2713 | flags_next = flags & ~MXGEFW_FLAGS_FIRST; | |
2714 | cum_len_next = cum_len + seglen; | |
0da34b6d BG |
2715 | if (mss) { /* TSO */ |
2716 | (req - rdma_count)->rdma_count = rdma_count + 1; | |
2717 | ||
2718 | if (likely(cum_len >= 0)) { /* payload */ | |
2719 | int next_is_first, chop; | |
2720 | ||
2721 | chop = (cum_len_next > mss); | |
2722 | cum_len_next = cum_len_next % mss; | |
2723 | next_is_first = (cum_len_next == 0); | |
2724 | flags |= chop * MXGEFW_FLAGS_TSO_CHOP; | |
2725 | flags_next |= next_is_first * | |
2726 | MXGEFW_FLAGS_FIRST; | |
2727 | rdma_count |= -(chop | next_is_first); | |
2728 | rdma_count += chop & !next_is_first; | |
2729 | } else if (likely(cum_len_next >= 0)) { /* header ends */ | |
2730 | int small; | |
2731 | ||
2732 | rdma_count = -1; | |
2733 | cum_len_next = 0; | |
2734 | seglen = -cum_len; | |
2735 | small = (mss <= MXGEFW_SEND_SMALL_SIZE); | |
2736 | flags_next = MXGEFW_FLAGS_TSO_PLD | | |
2737 | MXGEFW_FLAGS_FIRST | | |
2738 | (small * MXGEFW_FLAGS_SMALL); | |
2739 | } | |
2740 | } | |
0da34b6d BG |
2741 | req->addr_high = high_swapped; |
2742 | req->addr_low = htonl(low); | |
40f6cff5 | 2743 | req->pseudo_hdr_offset = htons(pseudo_hdr_offset); |
0da34b6d BG |
2744 | req->pad = 0; /* complete solid 16-byte block; does this matter? */ |
2745 | req->rdma_count = 1; | |
2746 | req->length = htons(seglen); | |
2747 | req->cksum_offset = cksum_offset; | |
2748 | req->flags = flags | ((cum_len & 1) * odd_flag); | |
2749 | ||
2750 | low += seglen; | |
2751 | len -= seglen; | |
2752 | cum_len = cum_len_next; | |
2753 | flags = flags_next; | |
2754 | req++; | |
2755 | count++; | |
2756 | rdma_count++; | |
4f93fde0 BG |
2757 | if (cksum_offset != 0 && !(mss && skb_is_gso_v6(skb))) { |
2758 | if (unlikely(cksum_offset > seglen)) | |
2759 | cksum_offset -= seglen; | |
2760 | else | |
2761 | cksum_offset = 0; | |
2762 | } | |
0da34b6d BG |
2763 | } |
2764 | if (frag_idx == frag_cnt) | |
2765 | break; | |
2766 | ||
2767 | /* map next fragment for DMA */ | |
2768 | idx = (count + tx->req) & tx->mask; | |
2769 | frag = &skb_shinfo(skb)->frags[frag_idx]; | |
2770 | frag_idx++; | |
2771 | len = frag->size; | |
2772 | bus = pci_map_page(mgp->pdev, frag->page, frag->page_offset, | |
2773 | len, PCI_DMA_TODEVICE); | |
2774 | pci_unmap_addr_set(&tx->info[idx], bus, bus); | |
2775 | pci_unmap_len_set(&tx->info[idx], len, len); | |
2776 | } | |
2777 | ||
2778 | (req - rdma_count)->rdma_count = rdma_count; | |
0da34b6d BG |
2779 | if (mss) |
2780 | do { | |
2781 | req--; | |
2782 | req->flags |= MXGEFW_FLAGS_TSO_LAST; | |
2783 | } while (!(req->flags & (MXGEFW_FLAGS_TSO_CHOP | | |
2784 | MXGEFW_FLAGS_FIRST))); | |
0da34b6d BG |
2785 | idx = ((count - 1) + tx->req) & tx->mask; |
2786 | tx->info[idx].last = 1; | |
e454e7e2 | 2787 | myri10ge_submit_req(tx, tx->req_list, count); |
0da34b6d BG |
2788 | tx->pkt_start++; |
2789 | if ((avail - count) < MXGEFW_MAX_SEND_DESC) { | |
b53bef84 | 2790 | tx->stop_queue++; |
0da34b6d BG |
2791 | netif_stop_queue(dev); |
2792 | } | |
2793 | dev->trans_start = jiffies; | |
2794 | return 0; | |
2795 | ||
2796 | abort_linearize: | |
2797 | /* Free any DMA resources we've alloced and clear out the skb | |
2798 | * slot so as to not trip up assertions, and to avoid a | |
2799 | * double-free if linearizing fails */ | |
2800 | ||
2801 | last_idx = (idx + 1) & tx->mask; | |
2802 | idx = tx->req & tx->mask; | |
2803 | tx->info[idx].skb = NULL; | |
2804 | do { | |
2805 | len = pci_unmap_len(&tx->info[idx], len); | |
2806 | if (len) { | |
2807 | if (tx->info[idx].skb != NULL) | |
2808 | pci_unmap_single(mgp->pdev, | |
2809 | pci_unmap_addr(&tx->info[idx], | |
2810 | bus), len, | |
2811 | PCI_DMA_TODEVICE); | |
2812 | else | |
2813 | pci_unmap_page(mgp->pdev, | |
2814 | pci_unmap_addr(&tx->info[idx], | |
2815 | bus), len, | |
2816 | PCI_DMA_TODEVICE); | |
2817 | pci_unmap_len_set(&tx->info[idx], len, 0); | |
2818 | tx->info[idx].skb = NULL; | |
2819 | } | |
2820 | idx = (idx + 1) & tx->mask; | |
2821 | } while (idx != last_idx); | |
89114afd | 2822 | if (skb_is_gso(skb)) { |
0da34b6d BG |
2823 | printk(KERN_ERR |
2824 | "myri10ge: %s: TSO but wanted to linearize?!?!?\n", | |
2825 | mgp->dev->name); | |
2826 | goto drop; | |
2827 | } | |
2828 | ||
bec0e859 | 2829 | if (skb_linearize(skb)) |
0da34b6d BG |
2830 | goto drop; |
2831 | ||
b53bef84 | 2832 | tx->linearized++; |
0da34b6d BG |
2833 | goto again; |
2834 | ||
2835 | drop: | |
2836 | dev_kfree_skb_any(skb); | |
b53bef84 | 2837 | ss->stats.tx_dropped += 1; |
0da34b6d BG |
2838 | return 0; |
2839 | ||
2840 | } | |
2841 | ||
4f93fde0 BG |
2842 | static int myri10ge_sw_tso(struct sk_buff *skb, struct net_device *dev) |
2843 | { | |
2844 | struct sk_buff *segs, *curr; | |
b53bef84 | 2845 | struct myri10ge_priv *mgp = netdev_priv(dev); |
4f93fde0 BG |
2846 | int status; |
2847 | ||
2848 | segs = skb_gso_segment(skb, dev->features & ~NETIF_F_TSO6); | |
801678c5 | 2849 | if (IS_ERR(segs)) |
4f93fde0 BG |
2850 | goto drop; |
2851 | ||
2852 | while (segs) { | |
2853 | curr = segs; | |
2854 | segs = segs->next; | |
2855 | curr->next = NULL; | |
2856 | status = myri10ge_xmit(curr, dev); | |
2857 | if (status != 0) { | |
2858 | dev_kfree_skb_any(curr); | |
2859 | if (segs != NULL) { | |
2860 | curr = segs; | |
2861 | segs = segs->next; | |
2862 | curr->next = NULL; | |
2863 | dev_kfree_skb_any(segs); | |
2864 | } | |
2865 | goto drop; | |
2866 | } | |
2867 | } | |
2868 | dev_kfree_skb_any(skb); | |
2869 | return 0; | |
2870 | ||
2871 | drop: | |
2872 | dev_kfree_skb_any(skb); | |
2873 | mgp->stats.tx_dropped += 1; | |
2874 | return 0; | |
2875 | } | |
2876 | ||
0da34b6d BG |
2877 | static struct net_device_stats *myri10ge_get_stats(struct net_device *dev) |
2878 | { | |
2879 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
0dcffac1 BG |
2880 | struct myri10ge_slice_netstats *slice_stats; |
2881 | struct net_device_stats *stats = &mgp->stats; | |
2882 | int i; | |
2883 | ||
2884 | memset(stats, 0, sizeof(*stats)); | |
2885 | for (i = 0; i < mgp->num_slices; i++) { | |
2886 | slice_stats = &mgp->ss[i].stats; | |
2887 | stats->rx_packets += slice_stats->rx_packets; | |
2888 | stats->tx_packets += slice_stats->tx_packets; | |
2889 | stats->rx_bytes += slice_stats->rx_bytes; | |
2890 | stats->tx_bytes += slice_stats->tx_bytes; | |
2891 | stats->rx_dropped += slice_stats->rx_dropped; | |
2892 | stats->tx_dropped += slice_stats->tx_dropped; | |
2893 | } | |
2894 | return stats; | |
0da34b6d BG |
2895 | } |
2896 | ||
2897 | static void myri10ge_set_multicast_list(struct net_device *dev) | |
2898 | { | |
b53bef84 | 2899 | struct myri10ge_priv *mgp = netdev_priv(dev); |
85a7ea1b | 2900 | struct myri10ge_cmd cmd; |
85a7ea1b | 2901 | struct dev_mc_list *mc_list; |
6250223e | 2902 | __be32 data[2] = { 0, 0 }; |
85a7ea1b | 2903 | int err; |
0795af57 | 2904 | DECLARE_MAC_BUF(mac); |
85a7ea1b | 2905 | |
0da34b6d BG |
2906 | /* can be called from atomic contexts, |
2907 | * pass 1 to force atomicity in myri10ge_send_cmd() */ | |
85a7ea1b BG |
2908 | myri10ge_change_promisc(mgp, dev->flags & IFF_PROMISC, 1); |
2909 | ||
2910 | /* This firmware is known to not support multicast */ | |
2f76216f | 2911 | if (!mgp->fw_multicast_support) |
85a7ea1b BG |
2912 | return; |
2913 | ||
2914 | /* Disable multicast filtering */ | |
2915 | ||
2916 | err = myri10ge_send_cmd(mgp, MXGEFW_ENABLE_ALLMULTI, &cmd, 1); | |
2917 | if (err != 0) { | |
2918 | printk(KERN_ERR "myri10ge: %s: Failed MXGEFW_ENABLE_ALLMULTI," | |
2919 | " error status: %d\n", dev->name, err); | |
2920 | goto abort; | |
2921 | } | |
2922 | ||
2f76216f | 2923 | if ((dev->flags & IFF_ALLMULTI) || mgp->adopted_rx_filter_bug) { |
85a7ea1b BG |
2924 | /* request to disable multicast filtering, so quit here */ |
2925 | return; | |
2926 | } | |
2927 | ||
2928 | /* Flush the filters */ | |
2929 | ||
2930 | err = myri10ge_send_cmd(mgp, MXGEFW_LEAVE_ALL_MULTICAST_GROUPS, | |
2931 | &cmd, 1); | |
2932 | if (err != 0) { | |
2933 | printk(KERN_ERR | |
2934 | "myri10ge: %s: Failed MXGEFW_LEAVE_ALL_MULTICAST_GROUPS" | |
2935 | ", error status: %d\n", dev->name, err); | |
2936 | goto abort; | |
2937 | } | |
2938 | ||
2939 | /* Walk the multicast list, and add each address */ | |
2940 | for (mc_list = dev->mc_list; mc_list != NULL; mc_list = mc_list->next) { | |
40f6cff5 AV |
2941 | memcpy(data, &mc_list->dmi_addr, 6); |
2942 | cmd.data0 = ntohl(data[0]); | |
2943 | cmd.data1 = ntohl(data[1]); | |
85a7ea1b BG |
2944 | err = myri10ge_send_cmd(mgp, MXGEFW_JOIN_MULTICAST_GROUP, |
2945 | &cmd, 1); | |
2946 | ||
2947 | if (err != 0) { | |
2948 | printk(KERN_ERR "myri10ge: %s: Failed " | |
2949 | "MXGEFW_JOIN_MULTICAST_GROUP, error status:" | |
2950 | "%d\t", dev->name, err); | |
0795af57 JP |
2951 | printk(KERN_ERR "MAC %s\n", |
2952 | print_mac(mac, mc_list->dmi_addr)); | |
85a7ea1b BG |
2953 | goto abort; |
2954 | } | |
2955 | } | |
2956 | /* Enable multicast filtering */ | |
2957 | err = myri10ge_send_cmd(mgp, MXGEFW_DISABLE_ALLMULTI, &cmd, 1); | |
2958 | if (err != 0) { | |
2959 | printk(KERN_ERR "myri10ge: %s: Failed MXGEFW_DISABLE_ALLMULTI," | |
2960 | "error status: %d\n", dev->name, err); | |
2961 | goto abort; | |
2962 | } | |
2963 | ||
2964 | return; | |
2965 | ||
2966 | abort: | |
2967 | return; | |
0da34b6d BG |
2968 | } |
2969 | ||
2970 | static int myri10ge_set_mac_address(struct net_device *dev, void *addr) | |
2971 | { | |
2972 | struct sockaddr *sa = addr; | |
2973 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
2974 | int status; | |
2975 | ||
2976 | if (!is_valid_ether_addr(sa->sa_data)) | |
2977 | return -EADDRNOTAVAIL; | |
2978 | ||
2979 | status = myri10ge_update_mac_address(mgp, sa->sa_data); | |
2980 | if (status != 0) { | |
2981 | printk(KERN_ERR | |
2982 | "myri10ge: %s: changing mac address failed with %d\n", | |
2983 | dev->name, status); | |
2984 | return status; | |
2985 | } | |
2986 | ||
2987 | /* change the dev structure */ | |
2988 | memcpy(dev->dev_addr, sa->sa_data, 6); | |
2989 | return 0; | |
2990 | } | |
2991 | ||
2992 | static int myri10ge_change_mtu(struct net_device *dev, int new_mtu) | |
2993 | { | |
2994 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
2995 | int error = 0; | |
2996 | ||
2997 | if ((new_mtu < 68) || (ETH_HLEN + new_mtu > MYRI10GE_MAX_ETHER_MTU)) { | |
2998 | printk(KERN_ERR "myri10ge: %s: new mtu (%d) is not valid\n", | |
2999 | dev->name, new_mtu); | |
3000 | return -EINVAL; | |
3001 | } | |
3002 | printk(KERN_INFO "%s: changing mtu from %d to %d\n", | |
3003 | dev->name, dev->mtu, new_mtu); | |
3004 | if (mgp->running) { | |
3005 | /* if we change the mtu on an active device, we must | |
3006 | * reset the device so the firmware sees the change */ | |
3007 | myri10ge_close(dev); | |
3008 | dev->mtu = new_mtu; | |
3009 | myri10ge_open(dev); | |
3010 | } else | |
3011 | dev->mtu = new_mtu; | |
3012 | ||
3013 | return error; | |
3014 | } | |
3015 | ||
3016 | /* | |
3017 | * Enable ECRC to align PCI-E Completion packets on an 8-byte boundary. | |
3018 | * Only do it if the bridge is a root port since we don't want to disturb | |
3019 | * any other device, except if forced with myri10ge_ecrc_enable > 1. | |
3020 | */ | |
3021 | ||
0da34b6d BG |
3022 | static void myri10ge_enable_ecrc(struct myri10ge_priv *mgp) |
3023 | { | |
3024 | struct pci_dev *bridge = mgp->pdev->bus->self; | |
3025 | struct device *dev = &mgp->pdev->dev; | |
3026 | unsigned cap; | |
3027 | unsigned err_cap; | |
3028 | u16 val; | |
3029 | u8 ext_type; | |
3030 | int ret; | |
3031 | ||
3032 | if (!myri10ge_ecrc_enable || !bridge) | |
3033 | return; | |
3034 | ||
3035 | /* check that the bridge is a root port */ | |
3036 | cap = pci_find_capability(bridge, PCI_CAP_ID_EXP); | |
3037 | pci_read_config_word(bridge, cap + PCI_CAP_FLAGS, &val); | |
3038 | ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4; | |
3039 | if (ext_type != PCI_EXP_TYPE_ROOT_PORT) { | |
3040 | if (myri10ge_ecrc_enable > 1) { | |
eca3fd83 | 3041 | struct pci_dev *prev_bridge, *old_bridge = bridge; |
0da34b6d BG |
3042 | |
3043 | /* Walk the hierarchy up to the root port | |
3044 | * where ECRC has to be enabled */ | |
3045 | do { | |
eca3fd83 | 3046 | prev_bridge = bridge; |
0da34b6d | 3047 | bridge = bridge->bus->self; |
eca3fd83 | 3048 | if (!bridge || prev_bridge == bridge) { |
0da34b6d BG |
3049 | dev_err(dev, |
3050 | "Failed to find root port" | |
3051 | " to force ECRC\n"); | |
3052 | return; | |
3053 | } | |
3054 | cap = | |
3055 | pci_find_capability(bridge, PCI_CAP_ID_EXP); | |
3056 | pci_read_config_word(bridge, | |
3057 | cap + PCI_CAP_FLAGS, &val); | |
3058 | ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4; | |
3059 | } while (ext_type != PCI_EXP_TYPE_ROOT_PORT); | |
3060 | ||
3061 | dev_info(dev, | |
3062 | "Forcing ECRC on non-root port %s" | |
3063 | " (enabling on root port %s)\n", | |
3064 | pci_name(old_bridge), pci_name(bridge)); | |
3065 | } else { | |
3066 | dev_err(dev, | |
3067 | "Not enabling ECRC on non-root port %s\n", | |
3068 | pci_name(bridge)); | |
3069 | return; | |
3070 | } | |
3071 | } | |
3072 | ||
3073 | cap = pci_find_ext_capability(bridge, PCI_EXT_CAP_ID_ERR); | |
0da34b6d BG |
3074 | if (!cap) |
3075 | return; | |
3076 | ||
3077 | ret = pci_read_config_dword(bridge, cap + PCI_ERR_CAP, &err_cap); | |
3078 | if (ret) { | |
3079 | dev_err(dev, "failed reading ext-conf-space of %s\n", | |
3080 | pci_name(bridge)); | |
3081 | dev_err(dev, "\t pci=nommconf in use? " | |
3082 | "or buggy/incomplete/absent ACPI MCFG attr?\n"); | |
3083 | return; | |
3084 | } | |
3085 | if (!(err_cap & PCI_ERR_CAP_ECRC_GENC)) | |
3086 | return; | |
3087 | ||
3088 | err_cap |= PCI_ERR_CAP_ECRC_GENE; | |
3089 | pci_write_config_dword(bridge, cap + PCI_ERR_CAP, err_cap); | |
3090 | dev_info(dev, "Enabled ECRC on upstream bridge %s\n", pci_name(bridge)); | |
0da34b6d BG |
3091 | } |
3092 | ||
3093 | /* | |
3094 | * The Lanai Z8E PCI-E interface achieves higher Read-DMA throughput | |
3095 | * when the PCI-E Completion packets are aligned on an 8-byte | |
3096 | * boundary. Some PCI-E chip sets always align Completion packets; on | |
3097 | * the ones that do not, the alignment can be enforced by enabling | |
3098 | * ECRC generation (if supported). | |
3099 | * | |
3100 | * When PCI-E Completion packets are not aligned, it is actually more | |
3101 | * efficient to limit Read-DMA transactions to 2KB, rather than 4KB. | |
3102 | * | |
3103 | * If the driver can neither enable ECRC nor verify that it has | |
3104 | * already been enabled, then it must use a firmware image which works | |
0dcffac1 | 3105 | * around unaligned completion packets (myri10ge_rss_ethp_z8e.dat), and it |
0da34b6d | 3106 | * should also ensure that it never gives the device a Read-DMA which is |
b53bef84 | 3107 | * larger than 2KB by setting the tx_boundary to 2KB. If ECRC is |
0dcffac1 | 3108 | * enabled, then the driver should use the aligned (myri10ge_rss_eth_z8e.dat) |
b53bef84 | 3109 | * firmware image, and set tx_boundary to 4KB. |
0da34b6d BG |
3110 | */ |
3111 | ||
5443e9ea | 3112 | static void myri10ge_firmware_probe(struct myri10ge_priv *mgp) |
0da34b6d | 3113 | { |
5443e9ea BG |
3114 | struct pci_dev *pdev = mgp->pdev; |
3115 | struct device *dev = &pdev->dev; | |
302d242c | 3116 | int status; |
0da34b6d | 3117 | |
b53bef84 | 3118 | mgp->tx_boundary = 4096; |
5443e9ea BG |
3119 | /* |
3120 | * Verify the max read request size was set to 4KB | |
3121 | * before trying the test with 4KB. | |
3122 | */ | |
302d242c BG |
3123 | status = pcie_get_readrq(pdev); |
3124 | if (status < 0) { | |
5443e9ea BG |
3125 | dev_err(dev, "Couldn't read max read req size: %d\n", status); |
3126 | goto abort; | |
3127 | } | |
302d242c BG |
3128 | if (status != 4096) { |
3129 | dev_warn(dev, "Max Read Request size != 4096 (%d)\n", status); | |
b53bef84 | 3130 | mgp->tx_boundary = 2048; |
5443e9ea BG |
3131 | } |
3132 | /* | |
3133 | * load the optimized firmware (which assumes aligned PCIe | |
3134 | * completions) in order to see if it works on this host. | |
3135 | */ | |
3136 | mgp->fw_name = myri10ge_fw_aligned; | |
0dcffac1 | 3137 | status = myri10ge_load_firmware(mgp, 1); |
5443e9ea BG |
3138 | if (status != 0) { |
3139 | goto abort; | |
3140 | } | |
3141 | ||
3142 | /* | |
3143 | * Enable ECRC if possible | |
3144 | */ | |
3145 | myri10ge_enable_ecrc(mgp); | |
3146 | ||
3147 | /* | |
3148 | * Run a DMA test which watches for unaligned completions and | |
3149 | * aborts on the first one seen. | |
3150 | */ | |
3151 | ||
3152 | status = myri10ge_dma_test(mgp, MXGEFW_CMD_UNALIGNED_TEST); | |
3153 | if (status == 0) | |
3154 | return; /* keep the aligned firmware */ | |
3155 | ||
3156 | if (status != -E2BIG) | |
3157 | dev_warn(dev, "DMA test failed: %d\n", status); | |
3158 | if (status == -ENOSYS) | |
3159 | dev_warn(dev, "Falling back to ethp! " | |
3160 | "Please install up to date fw\n"); | |
3161 | abort: | |
3162 | /* fall back to using the unaligned firmware */ | |
b53bef84 | 3163 | mgp->tx_boundary = 2048; |
0da34b6d BG |
3164 | mgp->fw_name = myri10ge_fw_unaligned; |
3165 | ||
5443e9ea BG |
3166 | } |
3167 | ||
3168 | static void myri10ge_select_firmware(struct myri10ge_priv *mgp) | |
3169 | { | |
0da34b6d | 3170 | if (myri10ge_force_firmware == 0) { |
ce7f9368 BG |
3171 | int link_width, exp_cap; |
3172 | u16 lnk; | |
3173 | ||
3174 | exp_cap = pci_find_capability(mgp->pdev, PCI_CAP_ID_EXP); | |
3175 | pci_read_config_word(mgp->pdev, exp_cap + PCI_EXP_LNKSTA, &lnk); | |
3176 | link_width = (lnk >> 4) & 0x3f; | |
3177 | ||
ce7f9368 BG |
3178 | /* Check to see if Link is less than 8 or if the |
3179 | * upstream bridge is known to provide aligned | |
3180 | * completions */ | |
3181 | if (link_width < 8) { | |
3182 | dev_info(&mgp->pdev->dev, "PCIE x%d Link\n", | |
3183 | link_width); | |
b53bef84 | 3184 | mgp->tx_boundary = 4096; |
ce7f9368 | 3185 | mgp->fw_name = myri10ge_fw_aligned; |
5443e9ea BG |
3186 | } else { |
3187 | myri10ge_firmware_probe(mgp); | |
0da34b6d BG |
3188 | } |
3189 | } else { | |
3190 | if (myri10ge_force_firmware == 1) { | |
3191 | dev_info(&mgp->pdev->dev, | |
3192 | "Assuming aligned completions (forced)\n"); | |
b53bef84 | 3193 | mgp->tx_boundary = 4096; |
0da34b6d BG |
3194 | mgp->fw_name = myri10ge_fw_aligned; |
3195 | } else { | |
3196 | dev_info(&mgp->pdev->dev, | |
3197 | "Assuming unaligned completions (forced)\n"); | |
b53bef84 | 3198 | mgp->tx_boundary = 2048; |
0da34b6d BG |
3199 | mgp->fw_name = myri10ge_fw_unaligned; |
3200 | } | |
3201 | } | |
3202 | if (myri10ge_fw_name != NULL) { | |
3203 | dev_info(&mgp->pdev->dev, "overriding firmware to %s\n", | |
3204 | myri10ge_fw_name); | |
3205 | mgp->fw_name = myri10ge_fw_name; | |
3206 | } | |
3207 | } | |
3208 | ||
0da34b6d | 3209 | #ifdef CONFIG_PM |
0da34b6d BG |
3210 | static int myri10ge_suspend(struct pci_dev *pdev, pm_message_t state) |
3211 | { | |
3212 | struct myri10ge_priv *mgp; | |
3213 | struct net_device *netdev; | |
3214 | ||
3215 | mgp = pci_get_drvdata(pdev); | |
3216 | if (mgp == NULL) | |
3217 | return -EINVAL; | |
3218 | netdev = mgp->dev; | |
3219 | ||
3220 | netif_device_detach(netdev); | |
3221 | if (netif_running(netdev)) { | |
3222 | printk(KERN_INFO "myri10ge: closing %s\n", netdev->name); | |
3223 | rtnl_lock(); | |
3224 | myri10ge_close(netdev); | |
3225 | rtnl_unlock(); | |
3226 | } | |
3227 | myri10ge_dummy_rdma(mgp, 0); | |
83f6e152 | 3228 | pci_save_state(pdev); |
0da34b6d | 3229 | pci_disable_device(pdev); |
1a63e846 BG |
3230 | |
3231 | return pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
0da34b6d BG |
3232 | } |
3233 | ||
3234 | static int myri10ge_resume(struct pci_dev *pdev) | |
3235 | { | |
3236 | struct myri10ge_priv *mgp; | |
3237 | struct net_device *netdev; | |
3238 | int status; | |
3239 | u16 vendor; | |
3240 | ||
3241 | mgp = pci_get_drvdata(pdev); | |
3242 | if (mgp == NULL) | |
3243 | return -EINVAL; | |
3244 | netdev = mgp->dev; | |
3245 | pci_set_power_state(pdev, 0); /* zeros conf space as a side effect */ | |
3246 | msleep(5); /* give card time to respond */ | |
3247 | pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor); | |
3248 | if (vendor == 0xffff) { | |
3249 | printk(KERN_ERR "myri10ge: %s: device disappeared!\n", | |
3250 | mgp->dev->name); | |
3251 | return -EIO; | |
3252 | } | |
83f6e152 | 3253 | |
1a63e846 BG |
3254 | status = pci_restore_state(pdev); |
3255 | if (status) | |
3256 | return status; | |
4c2248cc BG |
3257 | |
3258 | status = pci_enable_device(pdev); | |
1a63e846 | 3259 | if (status) { |
4c2248cc | 3260 | dev_err(&pdev->dev, "failed to enable device\n"); |
1a63e846 | 3261 | return status; |
4c2248cc BG |
3262 | } |
3263 | ||
0da34b6d BG |
3264 | pci_set_master(pdev); |
3265 | ||
0da34b6d | 3266 | myri10ge_reset(mgp); |
013b68bf | 3267 | myri10ge_dummy_rdma(mgp, 1); |
0da34b6d BG |
3268 | |
3269 | /* Save configuration space to be restored if the | |
3270 | * nic resets due to a parity error */ | |
83f6e152 | 3271 | pci_save_state(pdev); |
0da34b6d BG |
3272 | |
3273 | if (netif_running(netdev)) { | |
3274 | rtnl_lock(); | |
df30a740 | 3275 | status = myri10ge_open(netdev); |
0da34b6d | 3276 | rtnl_unlock(); |
df30a740 BG |
3277 | if (status != 0) |
3278 | goto abort_with_enabled; | |
3279 | ||
0da34b6d BG |
3280 | } |
3281 | netif_device_attach(netdev); | |
3282 | ||
3283 | return 0; | |
3284 | ||
4c2248cc BG |
3285 | abort_with_enabled: |
3286 | pci_disable_device(pdev); | |
0da34b6d BG |
3287 | return -EIO; |
3288 | ||
3289 | } | |
0da34b6d BG |
3290 | #endif /* CONFIG_PM */ |
3291 | ||
3292 | static u32 myri10ge_read_reboot(struct myri10ge_priv *mgp) | |
3293 | { | |
3294 | struct pci_dev *pdev = mgp->pdev; | |
3295 | int vs = mgp->vendor_specific_offset; | |
3296 | u32 reboot; | |
3297 | ||
3298 | /*enter read32 mode */ | |
3299 | pci_write_config_byte(pdev, vs + 0x10, 0x3); | |
3300 | ||
3301 | /*read REBOOT_STATUS (0xfffffff0) */ | |
3302 | pci_write_config_dword(pdev, vs + 0x18, 0xfffffff0); | |
3303 | pci_read_config_dword(pdev, vs + 0x14, &reboot); | |
3304 | return reboot; | |
3305 | } | |
3306 | ||
3307 | /* | |
3308 | * This watchdog is used to check whether the board has suffered | |
3309 | * from a parity error and needs to be recovered. | |
3310 | */ | |
c4028958 | 3311 | static void myri10ge_watchdog(struct work_struct *work) |
0da34b6d | 3312 | { |
c4028958 | 3313 | struct myri10ge_priv *mgp = |
6250223e | 3314 | container_of(work, struct myri10ge_priv, watchdog_work); |
b53bef84 | 3315 | struct myri10ge_tx_buf *tx; |
0da34b6d BG |
3316 | u32 reboot; |
3317 | int status; | |
0dcffac1 | 3318 | int i; |
0da34b6d BG |
3319 | u16 cmd, vendor; |
3320 | ||
3321 | mgp->watchdog_resets++; | |
3322 | pci_read_config_word(mgp->pdev, PCI_COMMAND, &cmd); | |
3323 | if ((cmd & PCI_COMMAND_MASTER) == 0) { | |
3324 | /* Bus master DMA disabled? Check to see | |
3325 | * if the card rebooted due to a parity error | |
3326 | * For now, just report it */ | |
3327 | reboot = myri10ge_read_reboot(mgp); | |
3328 | printk(KERN_ERR | |
f181137f BG |
3329 | "myri10ge: %s: NIC rebooted (0x%x),%s resetting\n", |
3330 | mgp->dev->name, reboot, | |
3331 | myri10ge_reset_recover ? " " : " not"); | |
3332 | if (myri10ge_reset_recover == 0) | |
3333 | return; | |
3334 | ||
3335 | myri10ge_reset_recover--; | |
3336 | ||
0da34b6d BG |
3337 | /* |
3338 | * A rebooted nic will come back with config space as | |
3339 | * it was after power was applied to PCIe bus. | |
3340 | * Attempt to restore config space which was saved | |
3341 | * when the driver was loaded, or the last time the | |
3342 | * nic was resumed from power saving mode. | |
3343 | */ | |
83f6e152 | 3344 | pci_restore_state(mgp->pdev); |
7adda30c BG |
3345 | |
3346 | /* save state again for accounting reasons */ | |
83f6e152 | 3347 | pci_save_state(mgp->pdev); |
7adda30c | 3348 | |
0da34b6d BG |
3349 | } else { |
3350 | /* if we get back -1's from our slot, perhaps somebody | |
3351 | * powered off our card. Don't try to reset it in | |
3352 | * this case */ | |
3353 | if (cmd == 0xffff) { | |
3354 | pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor); | |
3355 | if (vendor == 0xffff) { | |
3356 | printk(KERN_ERR | |
3357 | "myri10ge: %s: device disappeared!\n", | |
3358 | mgp->dev->name); | |
3359 | return; | |
3360 | } | |
3361 | } | |
3362 | /* Perhaps it is a software error. Try to reset */ | |
3363 | ||
3364 | printk(KERN_ERR "myri10ge: %s: device timeout, resetting\n", | |
3365 | mgp->dev->name); | |
0dcffac1 BG |
3366 | for (i = 0; i < mgp->num_slices; i++) { |
3367 | tx = &mgp->ss[i].tx; | |
3368 | printk(KERN_INFO | |
3369 | "myri10ge: %s: (%d): %d %d %d %d %d\n", | |
3370 | mgp->dev->name, i, tx->req, tx->done, | |
3371 | tx->pkt_start, tx->pkt_done, | |
3372 | (int)ntohl(mgp->ss[i].fw_stats-> | |
3373 | send_done_count)); | |
3374 | msleep(2000); | |
3375 | printk(KERN_INFO | |
3376 | "myri10ge: %s: (%d): %d %d %d %d %d\n", | |
3377 | mgp->dev->name, i, tx->req, tx->done, | |
3378 | tx->pkt_start, tx->pkt_done, | |
3379 | (int)ntohl(mgp->ss[i].fw_stats-> | |
3380 | send_done_count)); | |
3381 | } | |
0da34b6d BG |
3382 | } |
3383 | rtnl_lock(); | |
3384 | myri10ge_close(mgp->dev); | |
0dcffac1 | 3385 | status = myri10ge_load_firmware(mgp, 1); |
0da34b6d BG |
3386 | if (status != 0) |
3387 | printk(KERN_ERR "myri10ge: %s: failed to load firmware\n", | |
3388 | mgp->dev->name); | |
3389 | else | |
3390 | myri10ge_open(mgp->dev); | |
3391 | rtnl_unlock(); | |
3392 | } | |
3393 | ||
3394 | /* | |
3395 | * We use our own timer routine rather than relying upon | |
3396 | * netdev->tx_timeout because we have a very large hardware transmit | |
3397 | * queue. Due to the large queue, the netdev->tx_timeout function | |
3398 | * cannot detect a NIC with a parity error in a timely fashion if the | |
3399 | * NIC is lightly loaded. | |
3400 | */ | |
3401 | static void myri10ge_watchdog_timer(unsigned long arg) | |
3402 | { | |
3403 | struct myri10ge_priv *mgp; | |
b53bef84 | 3404 | struct myri10ge_slice_state *ss; |
0dcffac1 | 3405 | int i, reset_needed; |
626fda94 | 3406 | u32 rx_pause_cnt; |
0da34b6d BG |
3407 | |
3408 | mgp = (struct myri10ge_priv *)arg; | |
c7dab99b | 3409 | |
0dcffac1 BG |
3410 | rx_pause_cnt = ntohl(mgp->ss[0].fw_stats->dropped_pause); |
3411 | for (i = 0, reset_needed = 0; | |
3412 | i < mgp->num_slices && reset_needed == 0; ++i) { | |
b53bef84 | 3413 | |
0dcffac1 BG |
3414 | ss = &mgp->ss[i]; |
3415 | if (ss->rx_small.watchdog_needed) { | |
3416 | myri10ge_alloc_rx_pages(mgp, &ss->rx_small, | |
3417 | mgp->small_bytes + MXGEFW_PAD, | |
3418 | 1); | |
3419 | if (ss->rx_small.fill_cnt - ss->rx_small.cnt >= | |
3420 | myri10ge_fill_thresh) | |
3421 | ss->rx_small.watchdog_needed = 0; | |
3422 | } | |
3423 | if (ss->rx_big.watchdog_needed) { | |
3424 | myri10ge_alloc_rx_pages(mgp, &ss->rx_big, | |
3425 | mgp->big_bytes, 1); | |
3426 | if (ss->rx_big.fill_cnt - ss->rx_big.cnt >= | |
3427 | myri10ge_fill_thresh) | |
3428 | ss->rx_big.watchdog_needed = 0; | |
3429 | } | |
3430 | ||
3431 | if (ss->tx.req != ss->tx.done && | |
3432 | ss->tx.done == ss->watchdog_tx_done && | |
3433 | ss->watchdog_tx_req != ss->watchdog_tx_done) { | |
3434 | /* nic seems like it might be stuck.. */ | |
3435 | if (rx_pause_cnt != mgp->watchdog_pause) { | |
3436 | if (net_ratelimit()) | |
3437 | printk(KERN_WARNING "myri10ge %s:" | |
3438 | "TX paused, check link partner\n", | |
3439 | mgp->dev->name); | |
3440 | } else { | |
3441 | reset_needed = 1; | |
3442 | } | |
626fda94 | 3443 | } |
0dcffac1 BG |
3444 | ss->watchdog_tx_done = ss->tx.done; |
3445 | ss->watchdog_tx_req = ss->tx.req; | |
626fda94 | 3446 | } |
626fda94 | 3447 | mgp->watchdog_pause = rx_pause_cnt; |
0dcffac1 BG |
3448 | |
3449 | if (reset_needed) { | |
3450 | schedule_work(&mgp->watchdog_work); | |
3451 | } else { | |
3452 | /* rearm timer */ | |
3453 | mod_timer(&mgp->watchdog_timer, | |
3454 | jiffies + myri10ge_watchdog_timeout * HZ); | |
3455 | } | |
0da34b6d BG |
3456 | } |
3457 | ||
77929732 BG |
3458 | static void myri10ge_free_slices(struct myri10ge_priv *mgp) |
3459 | { | |
3460 | struct myri10ge_slice_state *ss; | |
3461 | struct pci_dev *pdev = mgp->pdev; | |
3462 | size_t bytes; | |
3463 | int i; | |
3464 | ||
3465 | if (mgp->ss == NULL) | |
3466 | return; | |
3467 | ||
3468 | for (i = 0; i < mgp->num_slices; i++) { | |
3469 | ss = &mgp->ss[i]; | |
3470 | if (ss->rx_done.entry != NULL) { | |
3471 | bytes = mgp->max_intr_slots * | |
3472 | sizeof(*ss->rx_done.entry); | |
3473 | dma_free_coherent(&pdev->dev, bytes, | |
3474 | ss->rx_done.entry, ss->rx_done.bus); | |
3475 | ss->rx_done.entry = NULL; | |
3476 | } | |
3477 | if (ss->fw_stats != NULL) { | |
3478 | bytes = sizeof(*ss->fw_stats); | |
3479 | dma_free_coherent(&pdev->dev, bytes, | |
3480 | ss->fw_stats, ss->fw_stats_bus); | |
3481 | ss->fw_stats = NULL; | |
3482 | } | |
3483 | } | |
3484 | kfree(mgp->ss); | |
3485 | mgp->ss = NULL; | |
3486 | } | |
3487 | ||
3488 | static int myri10ge_alloc_slices(struct myri10ge_priv *mgp) | |
3489 | { | |
3490 | struct myri10ge_slice_state *ss; | |
3491 | struct pci_dev *pdev = mgp->pdev; | |
3492 | size_t bytes; | |
3493 | int i; | |
3494 | ||
3495 | bytes = sizeof(*mgp->ss) * mgp->num_slices; | |
3496 | mgp->ss = kzalloc(bytes, GFP_KERNEL); | |
3497 | if (mgp->ss == NULL) { | |
3498 | return -ENOMEM; | |
3499 | } | |
3500 | ||
3501 | for (i = 0; i < mgp->num_slices; i++) { | |
3502 | ss = &mgp->ss[i]; | |
3503 | bytes = mgp->max_intr_slots * sizeof(*ss->rx_done.entry); | |
3504 | ss->rx_done.entry = dma_alloc_coherent(&pdev->dev, bytes, | |
3505 | &ss->rx_done.bus, | |
3506 | GFP_KERNEL); | |
3507 | if (ss->rx_done.entry == NULL) | |
3508 | goto abort; | |
3509 | memset(ss->rx_done.entry, 0, bytes); | |
3510 | bytes = sizeof(*ss->fw_stats); | |
3511 | ss->fw_stats = dma_alloc_coherent(&pdev->dev, bytes, | |
3512 | &ss->fw_stats_bus, | |
3513 | GFP_KERNEL); | |
3514 | if (ss->fw_stats == NULL) | |
3515 | goto abort; | |
3516 | ss->mgp = mgp; | |
3517 | ss->dev = mgp->dev; | |
3518 | netif_napi_add(ss->dev, &ss->napi, myri10ge_poll, | |
3519 | myri10ge_napi_weight); | |
3520 | } | |
3521 | return 0; | |
3522 | abort: | |
3523 | myri10ge_free_slices(mgp); | |
3524 | return -ENOMEM; | |
3525 | } | |
3526 | ||
3527 | /* | |
3528 | * This function determines the number of slices supported. | |
3529 | * The number slices is the minumum of the number of CPUS, | |
3530 | * the number of MSI-X irqs supported, the number of slices | |
3531 | * supported by the firmware | |
3532 | */ | |
3533 | static void myri10ge_probe_slices(struct myri10ge_priv *mgp) | |
3534 | { | |
3535 | struct myri10ge_cmd cmd; | |
3536 | struct pci_dev *pdev = mgp->pdev; | |
3537 | char *old_fw; | |
3538 | int i, status, ncpus, msix_cap; | |
3539 | ||
3540 | mgp->num_slices = 1; | |
3541 | msix_cap = pci_find_capability(pdev, PCI_CAP_ID_MSIX); | |
3542 | ncpus = num_online_cpus(); | |
3543 | ||
3544 | if (myri10ge_max_slices == 1 || msix_cap == 0 || | |
3545 | (myri10ge_max_slices == -1 && ncpus < 2)) | |
3546 | return; | |
3547 | ||
3548 | /* try to load the slice aware rss firmware */ | |
3549 | old_fw = mgp->fw_name; | |
13b2738c BG |
3550 | if (myri10ge_fw_name != NULL) { |
3551 | dev_info(&mgp->pdev->dev, "overriding rss firmware to %s\n", | |
3552 | myri10ge_fw_name); | |
3553 | mgp->fw_name = myri10ge_fw_name; | |
3554 | } else if (old_fw == myri10ge_fw_aligned) | |
77929732 BG |
3555 | mgp->fw_name = myri10ge_fw_rss_aligned; |
3556 | else | |
3557 | mgp->fw_name = myri10ge_fw_rss_unaligned; | |
3558 | status = myri10ge_load_firmware(mgp, 0); | |
3559 | if (status != 0) { | |
3560 | dev_info(&pdev->dev, "Rss firmware not found\n"); | |
3561 | return; | |
3562 | } | |
3563 | ||
3564 | /* hit the board with a reset to ensure it is alive */ | |
3565 | memset(&cmd, 0, sizeof(cmd)); | |
3566 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_RESET, &cmd, 0); | |
3567 | if (status != 0) { | |
3568 | dev_err(&mgp->pdev->dev, "failed reset\n"); | |
3569 | goto abort_with_fw; | |
3570 | return; | |
3571 | } | |
3572 | ||
3573 | mgp->max_intr_slots = cmd.data0 / sizeof(struct mcp_slot); | |
3574 | ||
3575 | /* tell it the size of the interrupt queues */ | |
3576 | cmd.data0 = mgp->max_intr_slots * sizeof(struct mcp_slot); | |
3577 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_SIZE, &cmd, 0); | |
3578 | if (status != 0) { | |
3579 | dev_err(&mgp->pdev->dev, "failed MXGEFW_CMD_SET_INTRQ_SIZE\n"); | |
3580 | goto abort_with_fw; | |
3581 | } | |
3582 | ||
3583 | /* ask the maximum number of slices it supports */ | |
3584 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_RSS_QUEUES, &cmd, 0); | |
3585 | if (status != 0) | |
3586 | goto abort_with_fw; | |
3587 | else | |
3588 | mgp->num_slices = cmd.data0; | |
3589 | ||
3590 | /* Only allow multiple slices if MSI-X is usable */ | |
3591 | if (!myri10ge_msi) { | |
3592 | goto abort_with_fw; | |
3593 | } | |
3594 | ||
3595 | /* if the admin did not specify a limit to how many | |
3596 | * slices we should use, cap it automatically to the | |
3597 | * number of CPUs currently online */ | |
3598 | if (myri10ge_max_slices == -1) | |
3599 | myri10ge_max_slices = ncpus; | |
3600 | ||
3601 | if (mgp->num_slices > myri10ge_max_slices) | |
3602 | mgp->num_slices = myri10ge_max_slices; | |
3603 | ||
3604 | /* Now try to allocate as many MSI-X vectors as we have | |
3605 | * slices. We give up on MSI-X if we can only get a single | |
3606 | * vector. */ | |
3607 | ||
3608 | mgp->msix_vectors = kzalloc(mgp->num_slices * | |
3609 | sizeof(*mgp->msix_vectors), GFP_KERNEL); | |
3610 | if (mgp->msix_vectors == NULL) | |
3611 | goto disable_msix; | |
3612 | for (i = 0; i < mgp->num_slices; i++) { | |
3613 | mgp->msix_vectors[i].entry = i; | |
3614 | } | |
3615 | ||
3616 | while (mgp->num_slices > 1) { | |
3617 | /* make sure it is a power of two */ | |
3618 | while (!is_power_of_2(mgp->num_slices)) | |
3619 | mgp->num_slices--; | |
3620 | if (mgp->num_slices == 1) | |
3621 | goto disable_msix; | |
3622 | status = pci_enable_msix(pdev, mgp->msix_vectors, | |
3623 | mgp->num_slices); | |
3624 | if (status == 0) { | |
3625 | pci_disable_msix(pdev); | |
3626 | return; | |
3627 | } | |
3628 | if (status > 0) | |
3629 | mgp->num_slices = status; | |
3630 | else | |
3631 | goto disable_msix; | |
3632 | } | |
3633 | ||
3634 | disable_msix: | |
3635 | if (mgp->msix_vectors != NULL) { | |
3636 | kfree(mgp->msix_vectors); | |
3637 | mgp->msix_vectors = NULL; | |
3638 | } | |
3639 | ||
3640 | abort_with_fw: | |
3641 | mgp->num_slices = 1; | |
3642 | mgp->fw_name = old_fw; | |
3643 | myri10ge_load_firmware(mgp, 0); | |
3644 | } | |
77929732 | 3645 | |
0da34b6d BG |
3646 | static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
3647 | { | |
3648 | struct net_device *netdev; | |
3649 | struct myri10ge_priv *mgp; | |
3650 | struct device *dev = &pdev->dev; | |
0da34b6d BG |
3651 | int i; |
3652 | int status = -ENXIO; | |
0da34b6d | 3653 | int dac_enabled; |
0da34b6d BG |
3654 | |
3655 | netdev = alloc_etherdev(sizeof(*mgp)); | |
3656 | if (netdev == NULL) { | |
3657 | dev_err(dev, "Could not allocate ethernet device\n"); | |
3658 | return -ENOMEM; | |
3659 | } | |
3660 | ||
b245fb67 MH |
3661 | SET_NETDEV_DEV(netdev, &pdev->dev); |
3662 | ||
0da34b6d | 3663 | mgp = netdev_priv(netdev); |
0da34b6d BG |
3664 | mgp->dev = netdev; |
3665 | mgp->pdev = pdev; | |
3666 | mgp->csum_flag = MXGEFW_FLAGS_CKSUM; | |
3667 | mgp->pause = myri10ge_flow_control; | |
3668 | mgp->intr_coal_delay = myri10ge_intr_coal_delay; | |
c58ac5ca | 3669 | mgp->msg_enable = netif_msg_init(myri10ge_debug, MYRI10GE_MSG_DEFAULT); |
0da34b6d BG |
3670 | init_waitqueue_head(&mgp->down_wq); |
3671 | ||
3672 | if (pci_enable_device(pdev)) { | |
3673 | dev_err(&pdev->dev, "pci_enable_device call failed\n"); | |
3674 | status = -ENODEV; | |
3675 | goto abort_with_netdev; | |
3676 | } | |
0da34b6d BG |
3677 | |
3678 | /* Find the vendor-specific cap so we can check | |
3679 | * the reboot register later on */ | |
3680 | mgp->vendor_specific_offset | |
3681 | = pci_find_capability(pdev, PCI_CAP_ID_VNDR); | |
3682 | ||
3683 | /* Set our max read request to 4KB */ | |
302d242c | 3684 | status = pcie_set_readrq(pdev, 4096); |
0da34b6d BG |
3685 | if (status != 0) { |
3686 | dev_err(&pdev->dev, "Error %d writing PCI_EXP_DEVCTL\n", | |
3687 | status); | |
3688 | goto abort_with_netdev; | |
3689 | } | |
3690 | ||
3691 | pci_set_master(pdev); | |
3692 | dac_enabled = 1; | |
3693 | status = pci_set_dma_mask(pdev, DMA_64BIT_MASK); | |
3694 | if (status != 0) { | |
3695 | dac_enabled = 0; | |
3696 | dev_err(&pdev->dev, | |
898eb71c JP |
3697 | "64-bit pci address mask was refused, " |
3698 | "trying 32-bit\n"); | |
0da34b6d BG |
3699 | status = pci_set_dma_mask(pdev, DMA_32BIT_MASK); |
3700 | } | |
3701 | if (status != 0) { | |
3702 | dev_err(&pdev->dev, "Error %d setting DMA mask\n", status); | |
3703 | goto abort_with_netdev; | |
3704 | } | |
77970ea5 | 3705 | (void)pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); |
b10c0668 BG |
3706 | mgp->cmd = dma_alloc_coherent(&pdev->dev, sizeof(*mgp->cmd), |
3707 | &mgp->cmd_bus, GFP_KERNEL); | |
0da34b6d BG |
3708 | if (mgp->cmd == NULL) |
3709 | goto abort_with_netdev; | |
3710 | ||
0da34b6d BG |
3711 | mgp->board_span = pci_resource_len(pdev, 0); |
3712 | mgp->iomem_base = pci_resource_start(pdev, 0); | |
3713 | mgp->mtrr = -1; | |
276e26c3 | 3714 | mgp->wc_enabled = 0; |
0da34b6d BG |
3715 | #ifdef CONFIG_MTRR |
3716 | mgp->mtrr = mtrr_add(mgp->iomem_base, mgp->board_span, | |
3717 | MTRR_TYPE_WRCOMB, 1); | |
276e26c3 BG |
3718 | if (mgp->mtrr >= 0) |
3719 | mgp->wc_enabled = 1; | |
0da34b6d BG |
3720 | #endif |
3721 | /* Hack. need to get rid of these magic numbers */ | |
3722 | mgp->sram_size = | |
3723 | 2 * 1024 * 1024 - (2 * (48 * 1024) + (32 * 1024)) - 0x100; | |
3724 | if (mgp->sram_size > mgp->board_span) { | |
3725 | dev_err(&pdev->dev, "board span %ld bytes too small\n", | |
3726 | mgp->board_span); | |
c7f80993 | 3727 | goto abort_with_mtrr; |
0da34b6d | 3728 | } |
c7f80993 | 3729 | mgp->sram = ioremap_wc(mgp->iomem_base, mgp->board_span); |
0da34b6d BG |
3730 | if (mgp->sram == NULL) { |
3731 | dev_err(&pdev->dev, "ioremap failed for %ld bytes at 0x%lx\n", | |
3732 | mgp->board_span, mgp->iomem_base); | |
3733 | status = -ENXIO; | |
c7f80993 | 3734 | goto abort_with_mtrr; |
0da34b6d BG |
3735 | } |
3736 | memcpy_fromio(mgp->eeprom_strings, | |
3737 | mgp->sram + mgp->sram_size - MYRI10GE_EEPROM_STRINGS_SIZE, | |
3738 | MYRI10GE_EEPROM_STRINGS_SIZE); | |
3739 | memset(mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE - 2, 0, 2); | |
3740 | status = myri10ge_read_mac_addr(mgp); | |
3741 | if (status) | |
3742 | goto abort_with_ioremap; | |
3743 | ||
3744 | for (i = 0; i < ETH_ALEN; i++) | |
3745 | netdev->dev_addr[i] = mgp->mac_addr[i]; | |
3746 | ||
5443e9ea BG |
3747 | myri10ge_select_firmware(mgp); |
3748 | ||
0dcffac1 | 3749 | status = myri10ge_load_firmware(mgp, 1); |
0da34b6d BG |
3750 | if (status != 0) { |
3751 | dev_err(&pdev->dev, "failed to load firmware\n"); | |
0dcffac1 BG |
3752 | goto abort_with_ioremap; |
3753 | } | |
3754 | myri10ge_probe_slices(mgp); | |
3755 | status = myri10ge_alloc_slices(mgp); | |
3756 | if (status != 0) { | |
3757 | dev_err(&pdev->dev, "failed to alloc slice state\n"); | |
3758 | goto abort_with_firmware; | |
0da34b6d BG |
3759 | } |
3760 | ||
3761 | status = myri10ge_reset(mgp); | |
3762 | if (status != 0) { | |
3763 | dev_err(&pdev->dev, "failed reset\n"); | |
0dcffac1 | 3764 | goto abort_with_slices; |
0da34b6d | 3765 | } |
981813d8 BG |
3766 | #ifdef CONFIG_DCA |
3767 | myri10ge_setup_dca(mgp); | |
3768 | #endif | |
0da34b6d BG |
3769 | pci_set_drvdata(pdev, mgp); |
3770 | if ((myri10ge_initial_mtu + ETH_HLEN) > MYRI10GE_MAX_ETHER_MTU) | |
3771 | myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN; | |
3772 | if ((myri10ge_initial_mtu + ETH_HLEN) < 68) | |
3773 | myri10ge_initial_mtu = 68; | |
3774 | netdev->mtu = myri10ge_initial_mtu; | |
3775 | netdev->open = myri10ge_open; | |
3776 | netdev->stop = myri10ge_close; | |
3777 | netdev->hard_start_xmit = myri10ge_xmit; | |
3778 | netdev->get_stats = myri10ge_get_stats; | |
3779 | netdev->base_addr = mgp->iomem_base; | |
0da34b6d BG |
3780 | netdev->change_mtu = myri10ge_change_mtu; |
3781 | netdev->set_multicast_list = myri10ge_set_multicast_list; | |
3782 | netdev->set_mac_address = myri10ge_set_mac_address; | |
4f93fde0 | 3783 | netdev->features = mgp->features; |
0da34b6d BG |
3784 | if (dac_enabled) |
3785 | netdev->features |= NETIF_F_HIGHDMA; | |
0da34b6d | 3786 | |
21d05db1 BG |
3787 | /* make sure we can get an irq, and that MSI can be |
3788 | * setup (if available). Also ensure netdev->irq | |
3789 | * is set to correct value if MSI is enabled */ | |
3790 | status = myri10ge_request_irq(mgp); | |
3791 | if (status != 0) | |
3792 | goto abort_with_firmware; | |
3793 | netdev->irq = pdev->irq; | |
3794 | myri10ge_free_irq(mgp); | |
3795 | ||
0da34b6d BG |
3796 | /* Save configuration space to be restored if the |
3797 | * nic resets due to a parity error */ | |
83f6e152 | 3798 | pci_save_state(pdev); |
0da34b6d BG |
3799 | |
3800 | /* Setup the watchdog timer */ | |
3801 | setup_timer(&mgp->watchdog_timer, myri10ge_watchdog_timer, | |
3802 | (unsigned long)mgp); | |
3803 | ||
3804 | SET_ETHTOOL_OPS(netdev, &myri10ge_ethtool_ops); | |
c4028958 | 3805 | INIT_WORK(&mgp->watchdog_work, myri10ge_watchdog); |
0da34b6d BG |
3806 | status = register_netdev(netdev); |
3807 | if (status != 0) { | |
3808 | dev_err(&pdev->dev, "register_netdev failed: %d\n", status); | |
7adda30c | 3809 | goto abort_with_state; |
0da34b6d | 3810 | } |
0dcffac1 BG |
3811 | if (mgp->msix_enabled) |
3812 | dev_info(dev, "%d MSI-X IRQs, tx bndry %d, fw %s, WC %s\n", | |
3813 | mgp->num_slices, mgp->tx_boundary, mgp->fw_name, | |
3814 | (mgp->wc_enabled ? "Enabled" : "Disabled")); | |
3815 | else | |
3816 | dev_info(dev, "%s IRQ %d, tx bndry %d, fw %s, WC %s\n", | |
3817 | mgp->msi_enabled ? "MSI" : "xPIC", | |
3818 | netdev->irq, mgp->tx_boundary, mgp->fw_name, | |
3819 | (mgp->wc_enabled ? "Enabled" : "Disabled")); | |
0da34b6d BG |
3820 | |
3821 | return 0; | |
3822 | ||
7adda30c | 3823 | abort_with_state: |
83f6e152 | 3824 | pci_restore_state(pdev); |
0da34b6d | 3825 | |
0dcffac1 BG |
3826 | abort_with_slices: |
3827 | myri10ge_free_slices(mgp); | |
3828 | ||
0da34b6d BG |
3829 | abort_with_firmware: |
3830 | myri10ge_dummy_rdma(mgp, 0); | |
3831 | ||
0da34b6d BG |
3832 | abort_with_ioremap: |
3833 | iounmap(mgp->sram); | |
3834 | ||
c7f80993 | 3835 | abort_with_mtrr: |
0da34b6d BG |
3836 | #ifdef CONFIG_MTRR |
3837 | if (mgp->mtrr >= 0) | |
3838 | mtrr_del(mgp->mtrr, mgp->iomem_base, mgp->board_span); | |
3839 | #endif | |
b10c0668 BG |
3840 | dma_free_coherent(&pdev->dev, sizeof(*mgp->cmd), |
3841 | mgp->cmd, mgp->cmd_bus); | |
0da34b6d BG |
3842 | |
3843 | abort_with_netdev: | |
3844 | ||
3845 | free_netdev(netdev); | |
3846 | return status; | |
3847 | } | |
3848 | ||
3849 | /* | |
3850 | * myri10ge_remove | |
3851 | * | |
3852 | * Does what is necessary to shutdown one Myrinet device. Called | |
3853 | * once for each Myrinet card by the kernel when a module is | |
3854 | * unloaded. | |
3855 | */ | |
3856 | static void myri10ge_remove(struct pci_dev *pdev) | |
3857 | { | |
3858 | struct myri10ge_priv *mgp; | |
3859 | struct net_device *netdev; | |
0da34b6d BG |
3860 | |
3861 | mgp = pci_get_drvdata(pdev); | |
3862 | if (mgp == NULL) | |
3863 | return; | |
3864 | ||
3865 | flush_scheduled_work(); | |
3866 | netdev = mgp->dev; | |
3867 | unregister_netdev(netdev); | |
0da34b6d | 3868 | |
981813d8 BG |
3869 | #ifdef CONFIG_DCA |
3870 | myri10ge_teardown_dca(mgp); | |
3871 | #endif | |
0da34b6d BG |
3872 | myri10ge_dummy_rdma(mgp, 0); |
3873 | ||
7adda30c | 3874 | /* avoid a memory leak */ |
83f6e152 | 3875 | pci_restore_state(pdev); |
7adda30c | 3876 | |
0da34b6d BG |
3877 | iounmap(mgp->sram); |
3878 | ||
3879 | #ifdef CONFIG_MTRR | |
3880 | if (mgp->mtrr >= 0) | |
3881 | mtrr_del(mgp->mtrr, mgp->iomem_base, mgp->board_span); | |
3882 | #endif | |
0dcffac1 BG |
3883 | myri10ge_free_slices(mgp); |
3884 | if (mgp->msix_vectors != NULL) | |
3885 | kfree(mgp->msix_vectors); | |
b10c0668 BG |
3886 | dma_free_coherent(&pdev->dev, sizeof(*mgp->cmd), |
3887 | mgp->cmd, mgp->cmd_bus); | |
0da34b6d BG |
3888 | |
3889 | free_netdev(netdev); | |
3890 | pci_set_drvdata(pdev, NULL); | |
3891 | } | |
3892 | ||
b10c0668 | 3893 | #define PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E 0x0008 |
a07bc1ff | 3894 | #define PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E_9 0x0009 |
0da34b6d BG |
3895 | |
3896 | static struct pci_device_id myri10ge_pci_tbl[] = { | |
b10c0668 | 3897 | {PCI_DEVICE(PCI_VENDOR_ID_MYRICOM, PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E)}, |
a07bc1ff BG |
3898 | {PCI_DEVICE |
3899 | (PCI_VENDOR_ID_MYRICOM, PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E_9)}, | |
0da34b6d BG |
3900 | {0}, |
3901 | }; | |
3902 | ||
3903 | static struct pci_driver myri10ge_driver = { | |
3904 | .name = "myri10ge", | |
3905 | .probe = myri10ge_probe, | |
3906 | .remove = myri10ge_remove, | |
3907 | .id_table = myri10ge_pci_tbl, | |
3908 | #ifdef CONFIG_PM | |
3909 | .suspend = myri10ge_suspend, | |
3910 | .resume = myri10ge_resume, | |
3911 | #endif | |
3912 | }; | |
3913 | ||
981813d8 BG |
3914 | #ifdef CONFIG_DCA |
3915 | static int | |
3916 | myri10ge_notify_dca(struct notifier_block *nb, unsigned long event, void *p) | |
3917 | { | |
3918 | int err = driver_for_each_device(&myri10ge_driver.driver, | |
3919 | NULL, &event, | |
3920 | myri10ge_notify_dca_device); | |
3921 | ||
3922 | if (err) | |
3923 | return NOTIFY_BAD; | |
3924 | return NOTIFY_DONE; | |
3925 | } | |
3926 | ||
3927 | static struct notifier_block myri10ge_dca_notifier = { | |
3928 | .notifier_call = myri10ge_notify_dca, | |
3929 | .next = NULL, | |
3930 | .priority = 0, | |
3931 | }; | |
3932 | #endif /* CONFIG_DCA */ | |
3933 | ||
0da34b6d BG |
3934 | static __init int myri10ge_init_module(void) |
3935 | { | |
3936 | printk(KERN_INFO "%s: Version %s\n", myri10ge_driver.name, | |
3937 | MYRI10GE_VERSION_STR); | |
0dcffac1 BG |
3938 | |
3939 | if (myri10ge_rss_hash > MXGEFW_RSS_HASH_TYPE_SRC_PORT || | |
3940 | myri10ge_rss_hash < MXGEFW_RSS_HASH_TYPE_IPV4) { | |
3941 | printk(KERN_ERR | |
3942 | "%s: Illegal rssh hash type %d, defaulting to source port\n", | |
3943 | myri10ge_driver.name, myri10ge_rss_hash); | |
3944 | myri10ge_rss_hash = MXGEFW_RSS_HASH_TYPE_SRC_PORT; | |
3945 | } | |
981813d8 BG |
3946 | #ifdef CONFIG_DCA |
3947 | dca_register_notify(&myri10ge_dca_notifier); | |
3948 | #endif | |
0dcffac1 | 3949 | |
0da34b6d BG |
3950 | return pci_register_driver(&myri10ge_driver); |
3951 | } | |
3952 | ||
3953 | module_init(myri10ge_init_module); | |
3954 | ||
3955 | static __exit void myri10ge_cleanup_module(void) | |
3956 | { | |
981813d8 BG |
3957 | #ifdef CONFIG_DCA |
3958 | dca_unregister_notify(&myri10ge_dca_notifier); | |
3959 | #endif | |
0da34b6d BG |
3960 | pci_unregister_driver(&myri10ge_driver); |
3961 | } | |
3962 | ||
3963 | module_exit(myri10ge_cleanup_module); |