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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> | |
59 | #include <linux/version.h> | |
60 | #include <linux/timer.h> | |
61 | #include <linux/vmalloc.h> | |
62 | #include <linux/crc32.h> | |
63 | #include <linux/moduleparam.h> | |
64 | #include <linux/io.h> | |
199126a2 | 65 | #include <linux/log2.h> |
0da34b6d | 66 | #include <net/checksum.h> |
1e6e9342 AG |
67 | #include <net/ip.h> |
68 | #include <net/tcp.h> | |
0da34b6d BG |
69 | #include <asm/byteorder.h> |
70 | #include <asm/io.h> | |
0da34b6d BG |
71 | #include <asm/processor.h> |
72 | #ifdef CONFIG_MTRR | |
73 | #include <asm/mtrr.h> | |
74 | #endif | |
75 | ||
76 | #include "myri10ge_mcp.h" | |
77 | #include "myri10ge_mcp_gen_header.h" | |
78 | ||
d399cf8c | 79 | #define MYRI10GE_VERSION_STR "1.3.99-1.347" |
0da34b6d BG |
80 | |
81 | MODULE_DESCRIPTION("Myricom 10G driver (10GbE)"); | |
82 | MODULE_AUTHOR("Maintainer: help@myri.com"); | |
83 | MODULE_VERSION(MYRI10GE_VERSION_STR); | |
84 | MODULE_LICENSE("Dual BSD/GPL"); | |
85 | ||
86 | #define MYRI10GE_MAX_ETHER_MTU 9014 | |
87 | ||
88 | #define MYRI10GE_ETH_STOPPED 0 | |
89 | #define MYRI10GE_ETH_STOPPING 1 | |
90 | #define MYRI10GE_ETH_STARTING 2 | |
91 | #define MYRI10GE_ETH_RUNNING 3 | |
92 | #define MYRI10GE_ETH_OPEN_FAILED 4 | |
93 | ||
94 | #define MYRI10GE_EEPROM_STRINGS_SIZE 256 | |
95 | #define MYRI10GE_MAX_SEND_DESC_TSO ((65536 / 2048) * 2) | |
1e6e9342 AG |
96 | #define MYRI10GE_MAX_LRO_DESCRIPTORS 8 |
97 | #define MYRI10GE_LRO_MAX_PKTS 64 | |
0da34b6d | 98 | |
40f6cff5 | 99 | #define MYRI10GE_NO_CONFIRM_DATA htonl(0xffffffff) |
0da34b6d BG |
100 | #define MYRI10GE_NO_RESPONSE_RESULT 0xffffffff |
101 | ||
dd50f336 BG |
102 | #define MYRI10GE_ALLOC_ORDER 0 |
103 | #define MYRI10GE_ALLOC_SIZE ((1 << MYRI10GE_ALLOC_ORDER) * PAGE_SIZE) | |
104 | #define MYRI10GE_MAX_FRAGS_PER_FRAME (MYRI10GE_MAX_ETHER_MTU/MYRI10GE_ALLOC_SIZE + 1) | |
105 | ||
0da34b6d | 106 | struct myri10ge_rx_buffer_state { |
dd50f336 BG |
107 | struct page *page; |
108 | int page_offset; | |
0da34b6d BG |
109 | DECLARE_PCI_UNMAP_ADDR(bus) |
110 | DECLARE_PCI_UNMAP_LEN(len) | |
111 | }; | |
112 | ||
113 | struct myri10ge_tx_buffer_state { | |
114 | struct sk_buff *skb; | |
115 | int last; | |
116 | DECLARE_PCI_UNMAP_ADDR(bus) | |
117 | DECLARE_PCI_UNMAP_LEN(len) | |
118 | }; | |
119 | ||
120 | struct myri10ge_cmd { | |
121 | u32 data0; | |
122 | u32 data1; | |
123 | u32 data2; | |
124 | }; | |
125 | ||
126 | struct myri10ge_rx_buf { | |
127 | struct mcp_kreq_ether_recv __iomem *lanai; /* lanai ptr for recv ring */ | |
0da34b6d BG |
128 | struct mcp_kreq_ether_recv *shadow; /* host shadow of recv ring */ |
129 | struct myri10ge_rx_buffer_state *info; | |
dd50f336 BG |
130 | struct page *page; |
131 | dma_addr_t bus; | |
132 | int page_offset; | |
0da34b6d | 133 | int cnt; |
dd50f336 | 134 | int fill_cnt; |
0da34b6d BG |
135 | int alloc_fail; |
136 | int mask; /* number of rx slots -1 */ | |
dd50f336 | 137 | int watchdog_needed; |
0da34b6d BG |
138 | }; |
139 | ||
140 | struct myri10ge_tx_buf { | |
141 | struct mcp_kreq_ether_send __iomem *lanai; /* lanai ptr for sendq */ | |
0da34b6d BG |
142 | struct mcp_kreq_ether_send *req_list; /* host shadow of sendq */ |
143 | char *req_bytes; | |
144 | struct myri10ge_tx_buffer_state *info; | |
145 | int mask; /* number of transmit slots -1 */ | |
0da34b6d BG |
146 | int req ____cacheline_aligned; /* transmit slots submitted */ |
147 | int pkt_start; /* packets started */ | |
b53bef84 BG |
148 | int stop_queue; |
149 | int linearized; | |
0da34b6d BG |
150 | int done ____cacheline_aligned; /* transmit slots completed */ |
151 | int pkt_done; /* packets completed */ | |
b53bef84 | 152 | int wake_queue; |
0da34b6d BG |
153 | }; |
154 | ||
155 | struct myri10ge_rx_done { | |
156 | struct mcp_slot *entry; | |
157 | dma_addr_t bus; | |
158 | int cnt; | |
159 | int idx; | |
1e6e9342 AG |
160 | struct net_lro_mgr lro_mgr; |
161 | struct net_lro_desc lro_desc[MYRI10GE_MAX_LRO_DESCRIPTORS]; | |
0da34b6d BG |
162 | }; |
163 | ||
b53bef84 BG |
164 | struct myri10ge_slice_netstats { |
165 | unsigned long rx_packets; | |
166 | unsigned long tx_packets; | |
167 | unsigned long rx_bytes; | |
168 | unsigned long tx_bytes; | |
169 | unsigned long rx_dropped; | |
170 | unsigned long tx_dropped; | |
171 | }; | |
172 | ||
173 | struct myri10ge_slice_state { | |
0da34b6d BG |
174 | struct myri10ge_tx_buf tx; /* transmit ring */ |
175 | struct myri10ge_rx_buf rx_small; | |
176 | struct myri10ge_rx_buf rx_big; | |
177 | struct myri10ge_rx_done rx_done; | |
b53bef84 BG |
178 | struct net_device *dev; |
179 | struct napi_struct napi; | |
180 | struct myri10ge_priv *mgp; | |
181 | struct myri10ge_slice_netstats stats; | |
182 | __be32 __iomem *irq_claim; | |
183 | struct mcp_irq_data *fw_stats; | |
184 | dma_addr_t fw_stats_bus; | |
185 | int watchdog_tx_done; | |
186 | int watchdog_tx_req; | |
981813d8 BG |
187 | #ifdef CONFIG_DCA |
188 | int cached_dca_tag; | |
189 | int cpu; | |
190 | __be32 __iomem *dca_tag; | |
191 | #endif | |
0dcffac1 | 192 | char irq_desc[32]; |
b53bef84 BG |
193 | }; |
194 | ||
195 | struct myri10ge_priv { | |
0dcffac1 | 196 | struct myri10ge_slice_state *ss; |
b53bef84 | 197 | int tx_boundary; /* boundary transmits cannot cross */ |
0dcffac1 | 198 | int num_slices; |
b53bef84 BG |
199 | int running; /* running? */ |
200 | int csum_flag; /* rx_csums? */ | |
0da34b6d | 201 | int small_bytes; |
dd50f336 | 202 | int big_bytes; |
fa0a90d9 | 203 | int max_intr_slots; |
0da34b6d BG |
204 | struct net_device *dev; |
205 | struct net_device_stats stats; | |
b53bef84 | 206 | spinlock_t stats_lock; |
0da34b6d BG |
207 | u8 __iomem *sram; |
208 | int sram_size; | |
209 | unsigned long board_span; | |
210 | unsigned long iomem_base; | |
40f6cff5 | 211 | __be32 __iomem *irq_deassert; |
0da34b6d BG |
212 | char *mac_addr_string; |
213 | struct mcp_cmd_response *cmd; | |
214 | dma_addr_t cmd_bus; | |
0da34b6d BG |
215 | struct pci_dev *pdev; |
216 | int msi_enabled; | |
0dcffac1 BG |
217 | int msix_enabled; |
218 | struct msix_entry *msix_vectors; | |
981813d8 BG |
219 | #ifdef CONFIG_DCA |
220 | int dca_enabled; | |
221 | #endif | |
66341fff | 222 | u32 link_state; |
0da34b6d BG |
223 | unsigned int rdma_tags_available; |
224 | int intr_coal_delay; | |
40f6cff5 | 225 | __be32 __iomem *intr_coal_delay_ptr; |
0da34b6d | 226 | int mtrr; |
276e26c3 | 227 | int wc_enabled; |
0da34b6d BG |
228 | int down_cnt; |
229 | wait_queue_head_t down_wq; | |
230 | struct work_struct watchdog_work; | |
231 | struct timer_list watchdog_timer; | |
0da34b6d | 232 | int watchdog_resets; |
b53bef84 | 233 | int watchdog_pause; |
0da34b6d BG |
234 | int pause; |
235 | char *fw_name; | |
236 | char eeprom_strings[MYRI10GE_EEPROM_STRINGS_SIZE]; | |
c0bf8801 | 237 | char *product_code_string; |
0da34b6d | 238 | char fw_version[128]; |
9dc6f0e7 BG |
239 | int fw_ver_major; |
240 | int fw_ver_minor; | |
241 | int fw_ver_tiny; | |
242 | int adopted_rx_filter_bug; | |
0da34b6d BG |
243 | u8 mac_addr[6]; /* eeprom mac address */ |
244 | unsigned long serial_number; | |
245 | int vendor_specific_offset; | |
85a7ea1b | 246 | int fw_multicast_support; |
4f93fde0 BG |
247 | unsigned long features; |
248 | u32 max_tso6; | |
0da34b6d BG |
249 | u32 read_dma; |
250 | u32 write_dma; | |
251 | u32 read_write_dma; | |
c58ac5ca BG |
252 | u32 link_changes; |
253 | u32 msg_enable; | |
0da34b6d BG |
254 | }; |
255 | ||
256 | static char *myri10ge_fw_unaligned = "myri10ge_ethp_z8e.dat"; | |
257 | static char *myri10ge_fw_aligned = "myri10ge_eth_z8e.dat"; | |
0dcffac1 BG |
258 | static char *myri10ge_fw_rss_unaligned = "myri10ge_rss_ethp_z8e.dat"; |
259 | static char *myri10ge_fw_rss_aligned = "myri10ge_rss_eth_z8e.dat"; | |
0da34b6d BG |
260 | |
261 | static char *myri10ge_fw_name = NULL; | |
262 | module_param(myri10ge_fw_name, charp, S_IRUGO | S_IWUSR); | |
d1ce3a0f | 263 | MODULE_PARM_DESC(myri10ge_fw_name, "Firmware image name"); |
0da34b6d BG |
264 | |
265 | static int myri10ge_ecrc_enable = 1; | |
266 | module_param(myri10ge_ecrc_enable, int, S_IRUGO); | |
d1ce3a0f | 267 | MODULE_PARM_DESC(myri10ge_ecrc_enable, "Enable Extended CRC on PCI-E"); |
0da34b6d | 268 | |
0da34b6d BG |
269 | static int myri10ge_small_bytes = -1; /* -1 == auto */ |
270 | module_param(myri10ge_small_bytes, int, S_IRUGO | S_IWUSR); | |
d1ce3a0f | 271 | MODULE_PARM_DESC(myri10ge_small_bytes, "Threshold of small packets"); |
0da34b6d BG |
272 | |
273 | static int myri10ge_msi = 1; /* enable msi by default */ | |
3621cec5 | 274 | module_param(myri10ge_msi, int, S_IRUGO | S_IWUSR); |
d1ce3a0f | 275 | MODULE_PARM_DESC(myri10ge_msi, "Enable Message Signalled Interrupts"); |
0da34b6d | 276 | |
f761fae1 | 277 | static int myri10ge_intr_coal_delay = 75; |
0da34b6d | 278 | module_param(myri10ge_intr_coal_delay, int, S_IRUGO); |
d1ce3a0f | 279 | MODULE_PARM_DESC(myri10ge_intr_coal_delay, "Interrupt coalescing delay"); |
0da34b6d BG |
280 | |
281 | static int myri10ge_flow_control = 1; | |
282 | module_param(myri10ge_flow_control, int, S_IRUGO); | |
d1ce3a0f | 283 | MODULE_PARM_DESC(myri10ge_flow_control, "Pause parameter"); |
0da34b6d BG |
284 | |
285 | static int myri10ge_deassert_wait = 1; | |
286 | module_param(myri10ge_deassert_wait, int, S_IRUGO | S_IWUSR); | |
287 | MODULE_PARM_DESC(myri10ge_deassert_wait, | |
d1ce3a0f | 288 | "Wait when deasserting legacy interrupts"); |
0da34b6d BG |
289 | |
290 | static int myri10ge_force_firmware = 0; | |
291 | module_param(myri10ge_force_firmware, int, S_IRUGO); | |
292 | MODULE_PARM_DESC(myri10ge_force_firmware, | |
d1ce3a0f | 293 | "Force firmware to assume aligned completions"); |
0da34b6d | 294 | |
0da34b6d BG |
295 | static int myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN; |
296 | module_param(myri10ge_initial_mtu, int, S_IRUGO); | |
d1ce3a0f | 297 | MODULE_PARM_DESC(myri10ge_initial_mtu, "Initial MTU"); |
0da34b6d BG |
298 | |
299 | static int myri10ge_napi_weight = 64; | |
300 | module_param(myri10ge_napi_weight, int, S_IRUGO); | |
d1ce3a0f | 301 | MODULE_PARM_DESC(myri10ge_napi_weight, "Set NAPI weight"); |
0da34b6d BG |
302 | |
303 | static int myri10ge_watchdog_timeout = 1; | |
304 | module_param(myri10ge_watchdog_timeout, int, S_IRUGO); | |
d1ce3a0f | 305 | MODULE_PARM_DESC(myri10ge_watchdog_timeout, "Set watchdog timeout"); |
0da34b6d BG |
306 | |
307 | static int myri10ge_max_irq_loops = 1048576; | |
308 | module_param(myri10ge_max_irq_loops, int, S_IRUGO); | |
309 | MODULE_PARM_DESC(myri10ge_max_irq_loops, | |
d1ce3a0f | 310 | "Set stuck legacy IRQ detection threshold"); |
0da34b6d | 311 | |
c58ac5ca BG |
312 | #define MYRI10GE_MSG_DEFAULT NETIF_MSG_LINK |
313 | ||
314 | static int myri10ge_debug = -1; /* defaults above */ | |
315 | module_param(myri10ge_debug, int, 0); | |
316 | MODULE_PARM_DESC(myri10ge_debug, "Debug level (0=none,...,16=all)"); | |
317 | ||
1e6e9342 AG |
318 | static int myri10ge_lro = 1; |
319 | module_param(myri10ge_lro, int, S_IRUGO); | |
d1ce3a0f | 320 | MODULE_PARM_DESC(myri10ge_lro, "Enable large receive offload"); |
1e6e9342 AG |
321 | |
322 | static int myri10ge_lro_max_pkts = MYRI10GE_LRO_MAX_PKTS; | |
323 | module_param(myri10ge_lro_max_pkts, int, S_IRUGO); | |
d1ce3a0f BG |
324 | MODULE_PARM_DESC(myri10ge_lro_max_pkts, |
325 | "Number of LRO packets to be aggregated"); | |
1e6e9342 | 326 | |
dd50f336 BG |
327 | static int myri10ge_fill_thresh = 256; |
328 | module_param(myri10ge_fill_thresh, int, S_IRUGO | S_IWUSR); | |
d1ce3a0f | 329 | MODULE_PARM_DESC(myri10ge_fill_thresh, "Number of empty rx slots allowed"); |
dd50f336 | 330 | |
f181137f BG |
331 | static int myri10ge_reset_recover = 1; |
332 | ||
0dcffac1 BG |
333 | static int myri10ge_max_slices = 1; |
334 | module_param(myri10ge_max_slices, int, S_IRUGO); | |
335 | MODULE_PARM_DESC(myri10ge_max_slices, "Max tx/rx queues"); | |
336 | ||
337 | static int myri10ge_rss_hash = MXGEFW_RSS_HASH_TYPE_SRC_PORT; | |
338 | module_param(myri10ge_rss_hash, int, S_IRUGO); | |
339 | MODULE_PARM_DESC(myri10ge_rss_hash, "Type of RSS hashing to do"); | |
340 | ||
981813d8 BG |
341 | static int myri10ge_dca = 1; |
342 | module_param(myri10ge_dca, int, S_IRUGO); | |
343 | MODULE_PARM_DESC(myri10ge_dca, "Enable DCA if possible"); | |
344 | ||
0da34b6d BG |
345 | #define MYRI10GE_FW_OFFSET 1024*1024 |
346 | #define MYRI10GE_HIGHPART_TO_U32(X) \ | |
347 | (sizeof (X) == 8) ? ((u32)((u64)(X) >> 32)) : (0) | |
348 | #define MYRI10GE_LOWPART_TO_U32(X) ((u32)(X)) | |
349 | ||
350 | #define myri10ge_pio_copy(to,from,size) __iowrite64_copy(to,from,size/8) | |
351 | ||
2f76216f | 352 | static void myri10ge_set_multicast_list(struct net_device *dev); |
4f93fde0 | 353 | static int myri10ge_sw_tso(struct sk_buff *skb, struct net_device *dev); |
2f76216f | 354 | |
6250223e | 355 | static inline void put_be32(__be32 val, __be32 __iomem * p) |
40f6cff5 | 356 | { |
6250223e | 357 | __raw_writel((__force __u32) val, (__force void __iomem *)p); |
40f6cff5 AV |
358 | } |
359 | ||
0da34b6d BG |
360 | static int |
361 | myri10ge_send_cmd(struct myri10ge_priv *mgp, u32 cmd, | |
362 | struct myri10ge_cmd *data, int atomic) | |
363 | { | |
364 | struct mcp_cmd *buf; | |
365 | char buf_bytes[sizeof(*buf) + 8]; | |
366 | struct mcp_cmd_response *response = mgp->cmd; | |
e700f9f4 | 367 | char __iomem *cmd_addr = mgp->sram + MXGEFW_ETH_CMD; |
0da34b6d BG |
368 | u32 dma_low, dma_high, result, value; |
369 | int sleep_total = 0; | |
370 | ||
371 | /* ensure buf is aligned to 8 bytes */ | |
372 | buf = (struct mcp_cmd *)ALIGN((unsigned long)buf_bytes, 8); | |
373 | ||
374 | buf->data0 = htonl(data->data0); | |
375 | buf->data1 = htonl(data->data1); | |
376 | buf->data2 = htonl(data->data2); | |
377 | buf->cmd = htonl(cmd); | |
378 | dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus); | |
379 | dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus); | |
380 | ||
381 | buf->response_addr.low = htonl(dma_low); | |
382 | buf->response_addr.high = htonl(dma_high); | |
40f6cff5 | 383 | response->result = htonl(MYRI10GE_NO_RESPONSE_RESULT); |
0da34b6d BG |
384 | mb(); |
385 | myri10ge_pio_copy(cmd_addr, buf, sizeof(*buf)); | |
386 | ||
387 | /* wait up to 15ms. Longest command is the DMA benchmark, | |
388 | * which is capped at 5ms, but runs from a timeout handler | |
389 | * that runs every 7.8ms. So a 15ms timeout leaves us with | |
390 | * a 2.2ms margin | |
391 | */ | |
392 | if (atomic) { | |
393 | /* if atomic is set, do not sleep, | |
394 | * and try to get the completion quickly | |
395 | * (1ms will be enough for those commands) */ | |
396 | for (sleep_total = 0; | |
397 | sleep_total < 1000 | |
40f6cff5 | 398 | && response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT); |
bd2db0cf | 399 | sleep_total += 10) { |
0da34b6d | 400 | udelay(10); |
bd2db0cf BG |
401 | mb(); |
402 | } | |
0da34b6d BG |
403 | } else { |
404 | /* use msleep for most command */ | |
405 | for (sleep_total = 0; | |
406 | sleep_total < 15 | |
40f6cff5 | 407 | && response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT); |
0da34b6d BG |
408 | sleep_total++) |
409 | msleep(1); | |
410 | } | |
411 | ||
412 | result = ntohl(response->result); | |
413 | value = ntohl(response->data); | |
414 | if (result != MYRI10GE_NO_RESPONSE_RESULT) { | |
415 | if (result == 0) { | |
416 | data->data0 = value; | |
417 | return 0; | |
85a7ea1b BG |
418 | } else if (result == MXGEFW_CMD_UNKNOWN) { |
419 | return -ENOSYS; | |
5443e9ea BG |
420 | } else if (result == MXGEFW_CMD_ERROR_UNALIGNED) { |
421 | return -E2BIG; | |
0da34b6d BG |
422 | } else { |
423 | dev_err(&mgp->pdev->dev, | |
424 | "command %d failed, result = %d\n", | |
425 | cmd, result); | |
426 | return -ENXIO; | |
427 | } | |
428 | } | |
429 | ||
430 | dev_err(&mgp->pdev->dev, "command %d timed out, result = %d\n", | |
431 | cmd, result); | |
432 | return -EAGAIN; | |
433 | } | |
434 | ||
435 | /* | |
436 | * The eeprom strings on the lanaiX have the format | |
437 | * SN=x\0 | |
438 | * MAC=x:x:x:x:x:x\0 | |
439 | * PT:ddd mmm xx xx:xx:xx xx\0 | |
440 | * PV:ddd mmm xx xx:xx:xx xx\0 | |
441 | */ | |
442 | static int myri10ge_read_mac_addr(struct myri10ge_priv *mgp) | |
443 | { | |
444 | char *ptr, *limit; | |
445 | int i; | |
446 | ||
447 | ptr = mgp->eeprom_strings; | |
448 | limit = mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE; | |
449 | ||
450 | while (*ptr != '\0' && ptr < limit) { | |
451 | if (memcmp(ptr, "MAC=", 4) == 0) { | |
452 | ptr += 4; | |
453 | mgp->mac_addr_string = ptr; | |
454 | for (i = 0; i < 6; i++) { | |
455 | if ((ptr + 2) > limit) | |
456 | goto abort; | |
457 | mgp->mac_addr[i] = | |
458 | simple_strtoul(ptr, &ptr, 16); | |
459 | ptr += 1; | |
460 | } | |
461 | } | |
c0bf8801 BG |
462 | if (memcmp(ptr, "PC=", 3) == 0) { |
463 | ptr += 3; | |
464 | mgp->product_code_string = ptr; | |
465 | } | |
0da34b6d BG |
466 | if (memcmp((const void *)ptr, "SN=", 3) == 0) { |
467 | ptr += 3; | |
468 | mgp->serial_number = simple_strtoul(ptr, &ptr, 10); | |
469 | } | |
470 | while (ptr < limit && *ptr++) ; | |
471 | } | |
472 | ||
473 | return 0; | |
474 | ||
475 | abort: | |
476 | dev_err(&mgp->pdev->dev, "failed to parse eeprom_strings\n"); | |
477 | return -ENXIO; | |
478 | } | |
479 | ||
480 | /* | |
481 | * Enable or disable periodic RDMAs from the host to make certain | |
482 | * chipsets resend dropped PCIe messages | |
483 | */ | |
484 | ||
485 | static void myri10ge_dummy_rdma(struct myri10ge_priv *mgp, int enable) | |
486 | { | |
487 | char __iomem *submit; | |
f8fd57c1 | 488 | __be32 buf[16] __attribute__ ((__aligned__(8))); |
0da34b6d BG |
489 | u32 dma_low, dma_high; |
490 | int i; | |
491 | ||
492 | /* clear confirmation addr */ | |
493 | mgp->cmd->data = 0; | |
494 | mb(); | |
495 | ||
496 | /* send a rdma command to the PCIe engine, and wait for the | |
497 | * response in the confirmation address. The firmware should | |
498 | * write a -1 there to indicate it is alive and well | |
499 | */ | |
500 | dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus); | |
501 | dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus); | |
502 | ||
503 | buf[0] = htonl(dma_high); /* confirm addr MSW */ | |
504 | buf[1] = htonl(dma_low); /* confirm addr LSW */ | |
40f6cff5 | 505 | buf[2] = MYRI10GE_NO_CONFIRM_DATA; /* confirm data */ |
0da34b6d BG |
506 | buf[3] = htonl(dma_high); /* dummy addr MSW */ |
507 | buf[4] = htonl(dma_low); /* dummy addr LSW */ | |
508 | buf[5] = htonl(enable); /* enable? */ | |
509 | ||
e700f9f4 | 510 | submit = mgp->sram + MXGEFW_BOOT_DUMMY_RDMA; |
0da34b6d BG |
511 | |
512 | myri10ge_pio_copy(submit, &buf, sizeof(buf)); | |
513 | for (i = 0; mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 20; i++) | |
514 | msleep(1); | |
515 | if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA) | |
516 | dev_err(&mgp->pdev->dev, "dummy rdma %s failed\n", | |
517 | (enable ? "enable" : "disable")); | |
518 | } | |
519 | ||
520 | static int | |
521 | myri10ge_validate_firmware(struct myri10ge_priv *mgp, | |
522 | struct mcp_gen_header *hdr) | |
523 | { | |
524 | struct device *dev = &mgp->pdev->dev; | |
0da34b6d BG |
525 | |
526 | /* check firmware type */ | |
527 | if (ntohl(hdr->mcp_type) != MCP_TYPE_ETH) { | |
528 | dev_err(dev, "Bad firmware type: 0x%x\n", ntohl(hdr->mcp_type)); | |
529 | return -EINVAL; | |
530 | } | |
531 | ||
532 | /* save firmware version for ethtool */ | |
533 | strncpy(mgp->fw_version, hdr->version, sizeof(mgp->fw_version)); | |
534 | ||
9dc6f0e7 BG |
535 | sscanf(mgp->fw_version, "%d.%d.%d", &mgp->fw_ver_major, |
536 | &mgp->fw_ver_minor, &mgp->fw_ver_tiny); | |
0da34b6d | 537 | |
9dc6f0e7 BG |
538 | if (!(mgp->fw_ver_major == MXGEFW_VERSION_MAJOR |
539 | && mgp->fw_ver_minor == MXGEFW_VERSION_MINOR)) { | |
0da34b6d BG |
540 | dev_err(dev, "Found firmware version %s\n", mgp->fw_version); |
541 | dev_err(dev, "Driver needs %d.%d\n", MXGEFW_VERSION_MAJOR, | |
542 | MXGEFW_VERSION_MINOR); | |
543 | return -EINVAL; | |
544 | } | |
545 | return 0; | |
546 | } | |
547 | ||
548 | static int myri10ge_load_hotplug_firmware(struct myri10ge_priv *mgp, u32 * size) | |
549 | { | |
550 | unsigned crc, reread_crc; | |
551 | const struct firmware *fw; | |
552 | struct device *dev = &mgp->pdev->dev; | |
b0d31d6b | 553 | unsigned char *fw_readback; |
0da34b6d BG |
554 | struct mcp_gen_header *hdr; |
555 | size_t hdr_offset; | |
556 | int status; | |
e454358a | 557 | unsigned i; |
0da34b6d BG |
558 | |
559 | if ((status = request_firmware(&fw, mgp->fw_name, dev)) < 0) { | |
560 | dev_err(dev, "Unable to load %s firmware image via hotplug\n", | |
561 | mgp->fw_name); | |
562 | status = -EINVAL; | |
563 | goto abort_with_nothing; | |
564 | } | |
565 | ||
566 | /* check size */ | |
567 | ||
568 | if (fw->size >= mgp->sram_size - MYRI10GE_FW_OFFSET || | |
569 | fw->size < MCP_HEADER_PTR_OFFSET + 4) { | |
570 | dev_err(dev, "Firmware size invalid:%d\n", (int)fw->size); | |
571 | status = -EINVAL; | |
572 | goto abort_with_fw; | |
573 | } | |
574 | ||
575 | /* check id */ | |
40f6cff5 | 576 | hdr_offset = ntohl(*(__be32 *) (fw->data + MCP_HEADER_PTR_OFFSET)); |
0da34b6d BG |
577 | if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > fw->size) { |
578 | dev_err(dev, "Bad firmware file\n"); | |
579 | status = -EINVAL; | |
580 | goto abort_with_fw; | |
581 | } | |
582 | hdr = (void *)(fw->data + hdr_offset); | |
583 | ||
584 | status = myri10ge_validate_firmware(mgp, hdr); | |
585 | if (status != 0) | |
586 | goto abort_with_fw; | |
587 | ||
588 | crc = crc32(~0, fw->data, fw->size); | |
e454358a BG |
589 | for (i = 0; i < fw->size; i += 256) { |
590 | myri10ge_pio_copy(mgp->sram + MYRI10GE_FW_OFFSET + i, | |
591 | fw->data + i, | |
592 | min(256U, (unsigned)(fw->size - i))); | |
593 | mb(); | |
594 | readb(mgp->sram); | |
b10c0668 | 595 | } |
b0d31d6b DW |
596 | fw_readback = vmalloc(fw->size); |
597 | if (!fw_readback) { | |
598 | status = -ENOMEM; | |
599 | goto abort_with_fw; | |
600 | } | |
0da34b6d | 601 | /* corruption checking is good for parity recovery and buggy chipset */ |
b0d31d6b DW |
602 | memcpy_fromio(fw_readback, mgp->sram + MYRI10GE_FW_OFFSET, fw->size); |
603 | reread_crc = crc32(~0, fw_readback, fw->size); | |
604 | vfree(fw_readback); | |
0da34b6d BG |
605 | if (crc != reread_crc) { |
606 | dev_err(dev, "CRC failed(fw-len=%u), got 0x%x (expect 0x%x)\n", | |
607 | (unsigned)fw->size, reread_crc, crc); | |
608 | status = -EIO; | |
609 | goto abort_with_fw; | |
610 | } | |
611 | *size = (u32) fw->size; | |
612 | ||
613 | abort_with_fw: | |
614 | release_firmware(fw); | |
615 | ||
616 | abort_with_nothing: | |
617 | return status; | |
618 | } | |
619 | ||
620 | static int myri10ge_adopt_running_firmware(struct myri10ge_priv *mgp) | |
621 | { | |
622 | struct mcp_gen_header *hdr; | |
623 | struct device *dev = &mgp->pdev->dev; | |
624 | const size_t bytes = sizeof(struct mcp_gen_header); | |
625 | size_t hdr_offset; | |
626 | int status; | |
627 | ||
628 | /* find running firmware header */ | |
66341fff | 629 | hdr_offset = swab32(readl(mgp->sram + MCP_HEADER_PTR_OFFSET)); |
0da34b6d BG |
630 | |
631 | if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > mgp->sram_size) { | |
632 | dev_err(dev, "Running firmware has bad header offset (%d)\n", | |
633 | (int)hdr_offset); | |
634 | return -EIO; | |
635 | } | |
636 | ||
637 | /* copy header of running firmware from SRAM to host memory to | |
638 | * validate firmware */ | |
639 | hdr = kmalloc(bytes, GFP_KERNEL); | |
640 | if (hdr == NULL) { | |
641 | dev_err(dev, "could not malloc firmware hdr\n"); | |
642 | return -ENOMEM; | |
643 | } | |
644 | memcpy_fromio(hdr, mgp->sram + hdr_offset, bytes); | |
645 | status = myri10ge_validate_firmware(mgp, hdr); | |
646 | kfree(hdr); | |
9dc6f0e7 BG |
647 | |
648 | /* check to see if adopted firmware has bug where adopting | |
649 | * it will cause broadcasts to be filtered unless the NIC | |
650 | * is kept in ALLMULTI mode */ | |
651 | if (mgp->fw_ver_major == 1 && mgp->fw_ver_minor == 4 && | |
652 | mgp->fw_ver_tiny >= 4 && mgp->fw_ver_tiny <= 11) { | |
653 | mgp->adopted_rx_filter_bug = 1; | |
654 | dev_warn(dev, "Adopting fw %d.%d.%d: " | |
655 | "working around rx filter bug\n", | |
656 | mgp->fw_ver_major, mgp->fw_ver_minor, | |
657 | mgp->fw_ver_tiny); | |
658 | } | |
0da34b6d BG |
659 | return status; |
660 | } | |
661 | ||
0178ec3d | 662 | static int myri10ge_get_firmware_capabilities(struct myri10ge_priv *mgp) |
fa0a90d9 BG |
663 | { |
664 | struct myri10ge_cmd cmd; | |
665 | int status; | |
666 | ||
667 | /* probe for IPv6 TSO support */ | |
668 | mgp->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO; | |
669 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_TSO6_HDR_SIZE, | |
670 | &cmd, 0); | |
671 | if (status == 0) { | |
672 | mgp->max_tso6 = cmd.data0; | |
673 | mgp->features |= NETIF_F_TSO6; | |
674 | } | |
675 | ||
676 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_RX_RING_SIZE, &cmd, 0); | |
677 | if (status != 0) { | |
678 | dev_err(&mgp->pdev->dev, | |
679 | "failed MXGEFW_CMD_GET_RX_RING_SIZE\n"); | |
680 | return -ENXIO; | |
681 | } | |
682 | ||
683 | mgp->max_intr_slots = 2 * (cmd.data0 / sizeof(struct mcp_dma_addr)); | |
684 | ||
685 | return 0; | |
686 | } | |
687 | ||
0dcffac1 | 688 | static int myri10ge_load_firmware(struct myri10ge_priv *mgp, int adopt) |
0da34b6d BG |
689 | { |
690 | char __iomem *submit; | |
f8fd57c1 | 691 | __be32 buf[16] __attribute__ ((__aligned__(8))); |
0da34b6d BG |
692 | u32 dma_low, dma_high, size; |
693 | int status, i; | |
694 | ||
b10c0668 | 695 | size = 0; |
0da34b6d BG |
696 | status = myri10ge_load_hotplug_firmware(mgp, &size); |
697 | if (status) { | |
0dcffac1 BG |
698 | if (!adopt) |
699 | return status; | |
0da34b6d BG |
700 | dev_warn(&mgp->pdev->dev, "hotplug firmware loading failed\n"); |
701 | ||
702 | /* Do not attempt to adopt firmware if there | |
703 | * was a bad crc */ | |
704 | if (status == -EIO) | |
705 | return status; | |
706 | ||
707 | status = myri10ge_adopt_running_firmware(mgp); | |
708 | if (status != 0) { | |
709 | dev_err(&mgp->pdev->dev, | |
710 | "failed to adopt running firmware\n"); | |
711 | return status; | |
712 | } | |
713 | dev_info(&mgp->pdev->dev, | |
714 | "Successfully adopted running firmware\n"); | |
b53bef84 | 715 | if (mgp->tx_boundary == 4096) { |
0da34b6d BG |
716 | dev_warn(&mgp->pdev->dev, |
717 | "Using firmware currently running on NIC" | |
718 | ". For optimal\n"); | |
719 | dev_warn(&mgp->pdev->dev, | |
720 | "performance consider loading optimized " | |
721 | "firmware\n"); | |
722 | dev_warn(&mgp->pdev->dev, "via hotplug\n"); | |
723 | } | |
724 | ||
725 | mgp->fw_name = "adopted"; | |
b53bef84 | 726 | mgp->tx_boundary = 2048; |
fa0a90d9 BG |
727 | myri10ge_dummy_rdma(mgp, 1); |
728 | status = myri10ge_get_firmware_capabilities(mgp); | |
0da34b6d BG |
729 | return status; |
730 | } | |
731 | ||
732 | /* clear confirmation addr */ | |
733 | mgp->cmd->data = 0; | |
734 | mb(); | |
735 | ||
736 | /* send a reload command to the bootstrap MCP, and wait for the | |
737 | * response in the confirmation address. The firmware should | |
738 | * write a -1 there to indicate it is alive and well | |
739 | */ | |
740 | dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus); | |
741 | dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus); | |
742 | ||
743 | buf[0] = htonl(dma_high); /* confirm addr MSW */ | |
744 | buf[1] = htonl(dma_low); /* confirm addr LSW */ | |
40f6cff5 | 745 | buf[2] = MYRI10GE_NO_CONFIRM_DATA; /* confirm data */ |
0da34b6d BG |
746 | |
747 | /* FIX: All newest firmware should un-protect the bottom of | |
748 | * the sram before handoff. However, the very first interfaces | |
749 | * do not. Therefore the handoff copy must skip the first 8 bytes | |
750 | */ | |
751 | buf[3] = htonl(MYRI10GE_FW_OFFSET + 8); /* where the code starts */ | |
752 | buf[4] = htonl(size - 8); /* length of code */ | |
753 | buf[5] = htonl(8); /* where to copy to */ | |
754 | buf[6] = htonl(0); /* where to jump to */ | |
755 | ||
e700f9f4 | 756 | submit = mgp->sram + MXGEFW_BOOT_HANDOFF; |
0da34b6d BG |
757 | |
758 | myri10ge_pio_copy(submit, &buf, sizeof(buf)); | |
759 | mb(); | |
760 | msleep(1); | |
761 | mb(); | |
762 | i = 0; | |
d93ca2a4 BG |
763 | while (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 9) { |
764 | msleep(1 << i); | |
0da34b6d BG |
765 | i++; |
766 | } | |
767 | if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA) { | |
768 | dev_err(&mgp->pdev->dev, "handoff failed\n"); | |
769 | return -ENXIO; | |
770 | } | |
9a71db72 | 771 | myri10ge_dummy_rdma(mgp, 1); |
fa0a90d9 | 772 | status = myri10ge_get_firmware_capabilities(mgp); |
0da34b6d | 773 | |
fa0a90d9 | 774 | return status; |
0da34b6d BG |
775 | } |
776 | ||
777 | static int myri10ge_update_mac_address(struct myri10ge_priv *mgp, u8 * addr) | |
778 | { | |
779 | struct myri10ge_cmd cmd; | |
780 | int status; | |
781 | ||
782 | cmd.data0 = ((addr[0] << 24) | (addr[1] << 16) | |
783 | | (addr[2] << 8) | addr[3]); | |
784 | ||
785 | cmd.data1 = ((addr[4] << 8) | (addr[5])); | |
786 | ||
787 | status = myri10ge_send_cmd(mgp, MXGEFW_SET_MAC_ADDRESS, &cmd, 0); | |
788 | return status; | |
789 | } | |
790 | ||
791 | static int myri10ge_change_pause(struct myri10ge_priv *mgp, int pause) | |
792 | { | |
793 | struct myri10ge_cmd cmd; | |
794 | int status, ctl; | |
795 | ||
796 | ctl = pause ? MXGEFW_ENABLE_FLOW_CONTROL : MXGEFW_DISABLE_FLOW_CONTROL; | |
797 | status = myri10ge_send_cmd(mgp, ctl, &cmd, 0); | |
798 | ||
799 | if (status) { | |
800 | printk(KERN_ERR | |
801 | "myri10ge: %s: Failed to set flow control mode\n", | |
802 | mgp->dev->name); | |
803 | return status; | |
804 | } | |
805 | mgp->pause = pause; | |
806 | return 0; | |
807 | } | |
808 | ||
809 | static void | |
810 | myri10ge_change_promisc(struct myri10ge_priv *mgp, int promisc, int atomic) | |
811 | { | |
812 | struct myri10ge_cmd cmd; | |
813 | int status, ctl; | |
814 | ||
815 | ctl = promisc ? MXGEFW_ENABLE_PROMISC : MXGEFW_DISABLE_PROMISC; | |
816 | status = myri10ge_send_cmd(mgp, ctl, &cmd, atomic); | |
817 | if (status) | |
818 | printk(KERN_ERR "myri10ge: %s: Failed to set promisc mode\n", | |
819 | mgp->dev->name); | |
820 | } | |
821 | ||
0d6ac257 | 822 | static int myri10ge_dma_test(struct myri10ge_priv *mgp, int test_type) |
0da34b6d BG |
823 | { |
824 | struct myri10ge_cmd cmd; | |
825 | int status; | |
0da34b6d | 826 | u32 len; |
34fdccea BG |
827 | struct page *dmatest_page; |
828 | dma_addr_t dmatest_bus; | |
0d6ac257 BG |
829 | char *test = " "; |
830 | ||
831 | dmatest_page = alloc_page(GFP_KERNEL); | |
832 | if (!dmatest_page) | |
833 | return -ENOMEM; | |
834 | dmatest_bus = pci_map_page(mgp->pdev, dmatest_page, 0, PAGE_SIZE, | |
835 | DMA_BIDIRECTIONAL); | |
836 | ||
837 | /* Run a small DMA test. | |
838 | * The magic multipliers to the length tell the firmware | |
839 | * to do DMA read, write, or read+write tests. The | |
840 | * results are returned in cmd.data0. The upper 16 | |
841 | * bits or the return is the number of transfers completed. | |
842 | * The lower 16 bits is the time in 0.5us ticks that the | |
843 | * transfers took to complete. | |
844 | */ | |
845 | ||
b53bef84 | 846 | len = mgp->tx_boundary; |
0d6ac257 BG |
847 | |
848 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus); | |
849 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus); | |
850 | cmd.data2 = len * 0x10000; | |
851 | status = myri10ge_send_cmd(mgp, test_type, &cmd, 0); | |
852 | if (status != 0) { | |
853 | test = "read"; | |
854 | goto abort; | |
855 | } | |
856 | mgp->read_dma = ((cmd.data0 >> 16) * len * 2) / (cmd.data0 & 0xffff); | |
857 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus); | |
858 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus); | |
859 | cmd.data2 = len * 0x1; | |
860 | status = myri10ge_send_cmd(mgp, test_type, &cmd, 0); | |
861 | if (status != 0) { | |
862 | test = "write"; | |
863 | goto abort; | |
864 | } | |
865 | mgp->write_dma = ((cmd.data0 >> 16) * len * 2) / (cmd.data0 & 0xffff); | |
866 | ||
867 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus); | |
868 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus); | |
869 | cmd.data2 = len * 0x10001; | |
870 | status = myri10ge_send_cmd(mgp, test_type, &cmd, 0); | |
871 | if (status != 0) { | |
872 | test = "read/write"; | |
873 | goto abort; | |
874 | } | |
875 | mgp->read_write_dma = ((cmd.data0 >> 16) * len * 2 * 2) / | |
876 | (cmd.data0 & 0xffff); | |
877 | ||
878 | abort: | |
879 | pci_unmap_page(mgp->pdev, dmatest_bus, PAGE_SIZE, DMA_BIDIRECTIONAL); | |
880 | put_page(dmatest_page); | |
881 | ||
882 | if (status != 0 && test_type != MXGEFW_CMD_UNALIGNED_TEST) | |
883 | dev_warn(&mgp->pdev->dev, "DMA %s benchmark failed: %d\n", | |
884 | test, status); | |
885 | ||
886 | return status; | |
887 | } | |
888 | ||
889 | static int myri10ge_reset(struct myri10ge_priv *mgp) | |
890 | { | |
891 | struct myri10ge_cmd cmd; | |
0dcffac1 BG |
892 | struct myri10ge_slice_state *ss; |
893 | int i, status; | |
0d6ac257 | 894 | size_t bytes; |
981813d8 BG |
895 | #ifdef CONFIG_DCA |
896 | unsigned long dca_tag_off; | |
897 | #endif | |
0da34b6d BG |
898 | |
899 | /* try to send a reset command to the card to see if it | |
900 | * is alive */ | |
901 | memset(&cmd, 0, sizeof(cmd)); | |
902 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_RESET, &cmd, 0); | |
903 | if (status != 0) { | |
904 | dev_err(&mgp->pdev->dev, "failed reset\n"); | |
905 | return -ENXIO; | |
906 | } | |
0d6ac257 BG |
907 | |
908 | (void)myri10ge_dma_test(mgp, MXGEFW_DMA_TEST); | |
0dcffac1 BG |
909 | /* |
910 | * Use non-ndis mcp_slot (eg, 4 bytes total, | |
911 | * no toeplitz hash value returned. Older firmware will | |
912 | * not understand this command, but will use the correct | |
913 | * sized mcp_slot, so we ignore error returns | |
914 | */ | |
915 | cmd.data0 = MXGEFW_RSS_MCP_SLOT_TYPE_MIN; | |
916 | (void)myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_RSS_MCP_SLOT_TYPE, &cmd, 0); | |
0da34b6d BG |
917 | |
918 | /* Now exchange information about interrupts */ | |
919 | ||
0dcffac1 | 920 | bytes = mgp->max_intr_slots * sizeof(*mgp->ss[0].rx_done.entry); |
0da34b6d BG |
921 | cmd.data0 = (u32) bytes; |
922 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_SIZE, &cmd, 0); | |
0dcffac1 BG |
923 | |
924 | /* | |
925 | * Even though we already know how many slices are supported | |
926 | * via myri10ge_probe_slices() MXGEFW_CMD_GET_MAX_RSS_QUEUES | |
927 | * has magic side effects, and must be called after a reset. | |
928 | * It must be called prior to calling any RSS related cmds, | |
929 | * including assigning an interrupt queue for anything but | |
930 | * slice 0. It must also be called *after* | |
931 | * MXGEFW_CMD_SET_INTRQ_SIZE, since the intrq size is used by | |
932 | * the firmware to compute offsets. | |
933 | */ | |
934 | ||
935 | if (mgp->num_slices > 1) { | |
936 | ||
937 | /* ask the maximum number of slices it supports */ | |
938 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_RSS_QUEUES, | |
939 | &cmd, 0); | |
940 | if (status != 0) { | |
941 | dev_err(&mgp->pdev->dev, | |
942 | "failed to get number of slices\n"); | |
943 | } | |
944 | ||
945 | /* | |
946 | * MXGEFW_CMD_ENABLE_RSS_QUEUES must be called prior | |
947 | * to setting up the interrupt queue DMA | |
948 | */ | |
949 | ||
950 | cmd.data0 = mgp->num_slices; | |
951 | cmd.data1 = 1; /* use MSI-X */ | |
952 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ENABLE_RSS_QUEUES, | |
953 | &cmd, 0); | |
954 | if (status != 0) { | |
955 | dev_err(&mgp->pdev->dev, | |
956 | "failed to set number of slices\n"); | |
957 | ||
958 | return status; | |
959 | } | |
960 | } | |
961 | for (i = 0; i < mgp->num_slices; i++) { | |
962 | ss = &mgp->ss[i]; | |
963 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(ss->rx_done.bus); | |
964 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(ss->rx_done.bus); | |
965 | cmd.data2 = i; | |
966 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_DMA, | |
967 | &cmd, 0); | |
968 | }; | |
0da34b6d BG |
969 | |
970 | status |= | |
971 | myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_ACK_OFFSET, &cmd, 0); | |
0dcffac1 BG |
972 | for (i = 0; i < mgp->num_slices; i++) { |
973 | ss = &mgp->ss[i]; | |
974 | ss->irq_claim = | |
975 | (__iomem __be32 *) (mgp->sram + cmd.data0 + 8 * i); | |
976 | } | |
df30a740 BG |
977 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_DEASSERT_OFFSET, |
978 | &cmd, 0); | |
979 | mgp->irq_deassert = (__iomem __be32 *) (mgp->sram + cmd.data0); | |
0da34b6d | 980 | |
0da34b6d BG |
981 | status |= myri10ge_send_cmd |
982 | (mgp, MXGEFW_CMD_GET_INTR_COAL_DELAY_OFFSET, &cmd, 0); | |
40f6cff5 | 983 | mgp->intr_coal_delay_ptr = (__iomem __be32 *) (mgp->sram + cmd.data0); |
0da34b6d BG |
984 | if (status != 0) { |
985 | dev_err(&mgp->pdev->dev, "failed set interrupt parameters\n"); | |
986 | return status; | |
987 | } | |
40f6cff5 | 988 | put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr); |
0da34b6d | 989 | |
981813d8 BG |
990 | #ifdef CONFIG_DCA |
991 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_DCA_OFFSET, &cmd, 0); | |
992 | dca_tag_off = cmd.data0; | |
993 | for (i = 0; i < mgp->num_slices; i++) { | |
994 | ss = &mgp->ss[i]; | |
995 | if (status == 0) { | |
996 | ss->dca_tag = (__iomem __be32 *) | |
997 | (mgp->sram + dca_tag_off + 4 * i); | |
998 | } else { | |
999 | ss->dca_tag = NULL; | |
1000 | } | |
1001 | } | |
1002 | #endif /* CONFIG_DCA */ | |
1003 | ||
0da34b6d | 1004 | /* reset mcp/driver shared state back to 0 */ |
0dcffac1 | 1005 | |
c58ac5ca | 1006 | mgp->link_changes = 0; |
0dcffac1 BG |
1007 | for (i = 0; i < mgp->num_slices; i++) { |
1008 | ss = &mgp->ss[i]; | |
1009 | ||
1010 | memset(ss->rx_done.entry, 0, bytes); | |
1011 | ss->tx.req = 0; | |
1012 | ss->tx.done = 0; | |
1013 | ss->tx.pkt_start = 0; | |
1014 | ss->tx.pkt_done = 0; | |
1015 | ss->rx_big.cnt = 0; | |
1016 | ss->rx_small.cnt = 0; | |
1017 | ss->rx_done.idx = 0; | |
1018 | ss->rx_done.cnt = 0; | |
1019 | ss->tx.wake_queue = 0; | |
1020 | ss->tx.stop_queue = 0; | |
1021 | } | |
1022 | ||
0da34b6d | 1023 | status = myri10ge_update_mac_address(mgp, mgp->dev->dev_addr); |
0da34b6d | 1024 | myri10ge_change_pause(mgp, mgp->pause); |
2f76216f | 1025 | myri10ge_set_multicast_list(mgp->dev); |
0da34b6d BG |
1026 | return status; |
1027 | } | |
1028 | ||
981813d8 BG |
1029 | #ifdef CONFIG_DCA |
1030 | static void | |
1031 | myri10ge_write_dca(struct myri10ge_slice_state *ss, int cpu, int tag) | |
1032 | { | |
1033 | ss->cpu = cpu; | |
1034 | ss->cached_dca_tag = tag; | |
1035 | put_be32(htonl(tag), ss->dca_tag); | |
1036 | } | |
1037 | ||
1038 | static inline void myri10ge_update_dca(struct myri10ge_slice_state *ss) | |
1039 | { | |
1040 | int cpu = get_cpu(); | |
1041 | int tag; | |
1042 | ||
1043 | if (cpu != ss->cpu) { | |
1044 | tag = dca_get_tag(cpu); | |
1045 | if (ss->cached_dca_tag != tag) | |
1046 | myri10ge_write_dca(ss, cpu, tag); | |
1047 | } | |
1048 | put_cpu(); | |
1049 | } | |
1050 | ||
1051 | static void myri10ge_setup_dca(struct myri10ge_priv *mgp) | |
1052 | { | |
1053 | int err, i; | |
1054 | struct pci_dev *pdev = mgp->pdev; | |
1055 | ||
1056 | if (mgp->ss[0].dca_tag == NULL || mgp->dca_enabled) | |
1057 | return; | |
1058 | if (!myri10ge_dca) { | |
1059 | dev_err(&pdev->dev, "dca disabled by administrator\n"); | |
1060 | return; | |
1061 | } | |
1062 | err = dca_add_requester(&pdev->dev); | |
1063 | if (err) { | |
1064 | dev_err(&pdev->dev, | |
1065 | "dca_add_requester() failed, err=%d\n", err); | |
1066 | return; | |
1067 | } | |
1068 | mgp->dca_enabled = 1; | |
1069 | for (i = 0; i < mgp->num_slices; i++) | |
1070 | myri10ge_write_dca(&mgp->ss[i], -1, 0); | |
1071 | } | |
1072 | ||
1073 | static void myri10ge_teardown_dca(struct myri10ge_priv *mgp) | |
1074 | { | |
1075 | struct pci_dev *pdev = mgp->pdev; | |
1076 | int err; | |
1077 | ||
1078 | if (!mgp->dca_enabled) | |
1079 | return; | |
1080 | mgp->dca_enabled = 0; | |
1081 | err = dca_remove_requester(&pdev->dev); | |
1082 | } | |
1083 | ||
1084 | static int myri10ge_notify_dca_device(struct device *dev, void *data) | |
1085 | { | |
1086 | struct myri10ge_priv *mgp; | |
1087 | unsigned long event; | |
1088 | ||
1089 | mgp = dev_get_drvdata(dev); | |
1090 | event = *(unsigned long *)data; | |
1091 | ||
1092 | if (event == DCA_PROVIDER_ADD) | |
1093 | myri10ge_setup_dca(mgp); | |
1094 | else if (event == DCA_PROVIDER_REMOVE) | |
1095 | myri10ge_teardown_dca(mgp); | |
1096 | return 0; | |
1097 | } | |
1098 | #endif /* CONFIG_DCA */ | |
1099 | ||
0da34b6d BG |
1100 | static inline void |
1101 | myri10ge_submit_8rx(struct mcp_kreq_ether_recv __iomem * dst, | |
1102 | struct mcp_kreq_ether_recv *src) | |
1103 | { | |
40f6cff5 | 1104 | __be32 low; |
0da34b6d BG |
1105 | |
1106 | low = src->addr_low; | |
40f6cff5 | 1107 | src->addr_low = htonl(DMA_32BIT_MASK); |
e67bda55 BG |
1108 | myri10ge_pio_copy(dst, src, 4 * sizeof(*src)); |
1109 | mb(); | |
1110 | myri10ge_pio_copy(dst + 4, src + 4, 4 * sizeof(*src)); | |
0da34b6d BG |
1111 | mb(); |
1112 | src->addr_low = low; | |
40f6cff5 | 1113 | put_be32(low, &dst->addr_low); |
0da34b6d BG |
1114 | mb(); |
1115 | } | |
1116 | ||
40f6cff5 | 1117 | static inline void myri10ge_vlan_ip_csum(struct sk_buff *skb, __wsum hw_csum) |
0da34b6d BG |
1118 | { |
1119 | struct vlan_hdr *vh = (struct vlan_hdr *)(skb->data); | |
1120 | ||
40f6cff5 | 1121 | if ((skb->protocol == htons(ETH_P_8021Q)) && |
0da34b6d BG |
1122 | (vh->h_vlan_encapsulated_proto == htons(ETH_P_IP) || |
1123 | vh->h_vlan_encapsulated_proto == htons(ETH_P_IPV6))) { | |
1124 | skb->csum = hw_csum; | |
84fa7933 | 1125 | skb->ip_summed = CHECKSUM_COMPLETE; |
0da34b6d BG |
1126 | } |
1127 | } | |
1128 | ||
dd50f336 BG |
1129 | static inline void |
1130 | myri10ge_rx_skb_build(struct sk_buff *skb, u8 * va, | |
1131 | struct skb_frag_struct *rx_frags, int len, int hlen) | |
1132 | { | |
1133 | struct skb_frag_struct *skb_frags; | |
1134 | ||
1135 | skb->len = skb->data_len = len; | |
1136 | skb->truesize = len + sizeof(struct sk_buff); | |
1137 | /* attach the page(s) */ | |
1138 | ||
1139 | skb_frags = skb_shinfo(skb)->frags; | |
1140 | while (len > 0) { | |
1141 | memcpy(skb_frags, rx_frags, sizeof(*skb_frags)); | |
1142 | len -= rx_frags->size; | |
1143 | skb_frags++; | |
1144 | rx_frags++; | |
1145 | skb_shinfo(skb)->nr_frags++; | |
1146 | } | |
1147 | ||
1148 | /* pskb_may_pull is not available in irq context, but | |
1149 | * skb_pull() (for ether_pad and eth_type_trans()) requires | |
1150 | * the beginning of the packet in skb_headlen(), move it | |
1151 | * manually */ | |
27d7ff46 | 1152 | skb_copy_to_linear_data(skb, va, hlen); |
dd50f336 BG |
1153 | skb_shinfo(skb)->frags[0].page_offset += hlen; |
1154 | skb_shinfo(skb)->frags[0].size -= hlen; | |
1155 | skb->data_len -= hlen; | |
1156 | skb->tail += hlen; | |
1157 | skb_pull(skb, MXGEFW_PAD); | |
1158 | } | |
1159 | ||
1160 | static void | |
1161 | myri10ge_alloc_rx_pages(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx, | |
1162 | int bytes, int watchdog) | |
1163 | { | |
1164 | struct page *page; | |
1165 | int idx; | |
1166 | ||
1167 | if (unlikely(rx->watchdog_needed && !watchdog)) | |
1168 | return; | |
1169 | ||
1170 | /* try to refill entire ring */ | |
1171 | while (rx->fill_cnt != (rx->cnt + rx->mask + 1)) { | |
1172 | idx = rx->fill_cnt & rx->mask; | |
ae8509b1 | 1173 | if (rx->page_offset + bytes <= MYRI10GE_ALLOC_SIZE) { |
dd50f336 BG |
1174 | /* we can use part of previous page */ |
1175 | get_page(rx->page); | |
1176 | } else { | |
1177 | /* we need a new page */ | |
1178 | page = | |
1179 | alloc_pages(GFP_ATOMIC | __GFP_COMP, | |
1180 | MYRI10GE_ALLOC_ORDER); | |
1181 | if (unlikely(page == NULL)) { | |
1182 | if (rx->fill_cnt - rx->cnt < 16) | |
1183 | rx->watchdog_needed = 1; | |
1184 | return; | |
1185 | } | |
1186 | rx->page = page; | |
1187 | rx->page_offset = 0; | |
1188 | rx->bus = pci_map_page(mgp->pdev, page, 0, | |
1189 | MYRI10GE_ALLOC_SIZE, | |
1190 | PCI_DMA_FROMDEVICE); | |
1191 | } | |
1192 | rx->info[idx].page = rx->page; | |
1193 | rx->info[idx].page_offset = rx->page_offset; | |
1194 | /* note that this is the address of the start of the | |
1195 | * page */ | |
1196 | pci_unmap_addr_set(&rx->info[idx], bus, rx->bus); | |
1197 | rx->shadow[idx].addr_low = | |
1198 | htonl(MYRI10GE_LOWPART_TO_U32(rx->bus) + rx->page_offset); | |
1199 | rx->shadow[idx].addr_high = | |
1200 | htonl(MYRI10GE_HIGHPART_TO_U32(rx->bus)); | |
1201 | ||
1202 | /* start next packet on a cacheline boundary */ | |
1203 | rx->page_offset += SKB_DATA_ALIGN(bytes); | |
ae8509b1 BG |
1204 | |
1205 | #if MYRI10GE_ALLOC_SIZE > 4096 | |
1206 | /* don't cross a 4KB boundary */ | |
1207 | if ((rx->page_offset >> 12) != | |
1208 | ((rx->page_offset + bytes - 1) >> 12)) | |
1209 | rx->page_offset = (rx->page_offset + 4096) & ~4095; | |
1210 | #endif | |
dd50f336 BG |
1211 | rx->fill_cnt++; |
1212 | ||
1213 | /* copy 8 descriptors to the firmware at a time */ | |
1214 | if ((idx & 7) == 7) { | |
e454e7e2 BG |
1215 | myri10ge_submit_8rx(&rx->lanai[idx - 7], |
1216 | &rx->shadow[idx - 7]); | |
dd50f336 BG |
1217 | } |
1218 | } | |
1219 | } | |
1220 | ||
1221 | static inline void | |
1222 | myri10ge_unmap_rx_page(struct pci_dev *pdev, | |
1223 | struct myri10ge_rx_buffer_state *info, int bytes) | |
1224 | { | |
1225 | /* unmap the recvd page if we're the only or last user of it */ | |
1226 | if (bytes >= MYRI10GE_ALLOC_SIZE / 2 || | |
1227 | (info->page_offset + 2 * bytes) > MYRI10GE_ALLOC_SIZE) { | |
1228 | pci_unmap_page(pdev, (pci_unmap_addr(info, bus) | |
1229 | & ~(MYRI10GE_ALLOC_SIZE - 1)), | |
1230 | MYRI10GE_ALLOC_SIZE, PCI_DMA_FROMDEVICE); | |
1231 | } | |
1232 | } | |
1233 | ||
1234 | #define MYRI10GE_HLEN 64 /* The number of bytes to copy from a | |
1235 | * page into an skb */ | |
1236 | ||
1237 | static inline int | |
b53bef84 | 1238 | myri10ge_rx_done(struct myri10ge_slice_state *ss, struct myri10ge_rx_buf *rx, |
52ea6fb3 | 1239 | int bytes, int len, __wsum csum) |
dd50f336 | 1240 | { |
b53bef84 | 1241 | struct myri10ge_priv *mgp = ss->mgp; |
dd50f336 BG |
1242 | struct sk_buff *skb; |
1243 | struct skb_frag_struct rx_frags[MYRI10GE_MAX_FRAGS_PER_FRAME]; | |
1244 | int i, idx, hlen, remainder; | |
1245 | struct pci_dev *pdev = mgp->pdev; | |
1246 | struct net_device *dev = mgp->dev; | |
1247 | u8 *va; | |
1248 | ||
1249 | len += MXGEFW_PAD; | |
1250 | idx = rx->cnt & rx->mask; | |
1251 | va = page_address(rx->info[idx].page) + rx->info[idx].page_offset; | |
1252 | prefetch(va); | |
1253 | /* Fill skb_frag_struct(s) with data from our receive */ | |
1254 | for (i = 0, remainder = len; remainder > 0; i++) { | |
1255 | myri10ge_unmap_rx_page(pdev, &rx->info[idx], bytes); | |
1256 | rx_frags[i].page = rx->info[idx].page; | |
1257 | rx_frags[i].page_offset = rx->info[idx].page_offset; | |
1258 | if (remainder < MYRI10GE_ALLOC_SIZE) | |
1259 | rx_frags[i].size = remainder; | |
1260 | else | |
1261 | rx_frags[i].size = MYRI10GE_ALLOC_SIZE; | |
1262 | rx->cnt++; | |
1263 | idx = rx->cnt & rx->mask; | |
1264 | remainder -= MYRI10GE_ALLOC_SIZE; | |
1265 | } | |
1266 | ||
1e6e9342 AG |
1267 | if (mgp->csum_flag && myri10ge_lro) { |
1268 | rx_frags[0].page_offset += MXGEFW_PAD; | |
1269 | rx_frags[0].size -= MXGEFW_PAD; | |
1270 | len -= MXGEFW_PAD; | |
b53bef84 | 1271 | lro_receive_frags(&ss->rx_done.lro_mgr, rx_frags, |
b53bef84 | 1272 | /* opaque, will come back in get_frag_header */ |
0dcffac1 | 1273 | len, len, |
b53bef84 | 1274 | (void *)(__force unsigned long)csum, csum); |
0dcffac1 | 1275 | |
1e6e9342 AG |
1276 | return 1; |
1277 | } | |
1278 | ||
dd50f336 BG |
1279 | hlen = MYRI10GE_HLEN > len ? len : MYRI10GE_HLEN; |
1280 | ||
e636b2ea BG |
1281 | /* allocate an skb to attach the page(s) to. This is done |
1282 | * after trying LRO, so as to avoid skb allocation overheads */ | |
dd50f336 BG |
1283 | |
1284 | skb = netdev_alloc_skb(dev, MYRI10GE_HLEN + 16); | |
1285 | if (unlikely(skb == NULL)) { | |
1286 | mgp->stats.rx_dropped++; | |
1287 | do { | |
1288 | i--; | |
1289 | put_page(rx_frags[i].page); | |
1290 | } while (i != 0); | |
1291 | return 0; | |
1292 | } | |
1293 | ||
1294 | /* Attach the pages to the skb, and trim off any padding */ | |
1295 | myri10ge_rx_skb_build(skb, va, rx_frags, len, hlen); | |
1296 | if (skb_shinfo(skb)->frags[0].size <= 0) { | |
1297 | put_page(skb_shinfo(skb)->frags[0].page); | |
1298 | skb_shinfo(skb)->nr_frags = 0; | |
1299 | } | |
1300 | skb->protocol = eth_type_trans(skb, dev); | |
dd50f336 BG |
1301 | |
1302 | if (mgp->csum_flag) { | |
1303 | if ((skb->protocol == htons(ETH_P_IP)) || | |
1304 | (skb->protocol == htons(ETH_P_IPV6))) { | |
1305 | skb->csum = csum; | |
1306 | skb->ip_summed = CHECKSUM_COMPLETE; | |
1307 | } else | |
1308 | myri10ge_vlan_ip_csum(skb, csum); | |
1309 | } | |
1310 | netif_receive_skb(skb); | |
1311 | dev->last_rx = jiffies; | |
1312 | return 1; | |
1313 | } | |
1314 | ||
b53bef84 BG |
1315 | static inline void |
1316 | myri10ge_tx_done(struct myri10ge_slice_state *ss, int mcp_index) | |
0da34b6d | 1317 | { |
b53bef84 BG |
1318 | struct pci_dev *pdev = ss->mgp->pdev; |
1319 | struct myri10ge_tx_buf *tx = &ss->tx; | |
0da34b6d BG |
1320 | struct sk_buff *skb; |
1321 | int idx, len; | |
0da34b6d BG |
1322 | |
1323 | while (tx->pkt_done != mcp_index) { | |
1324 | idx = tx->done & tx->mask; | |
1325 | skb = tx->info[idx].skb; | |
1326 | ||
1327 | /* Mark as free */ | |
1328 | tx->info[idx].skb = NULL; | |
1329 | if (tx->info[idx].last) { | |
1330 | tx->pkt_done++; | |
1331 | tx->info[idx].last = 0; | |
1332 | } | |
1333 | tx->done++; | |
1334 | len = pci_unmap_len(&tx->info[idx], len); | |
1335 | pci_unmap_len_set(&tx->info[idx], len, 0); | |
1336 | if (skb) { | |
b53bef84 BG |
1337 | ss->stats.tx_bytes += skb->len; |
1338 | ss->stats.tx_packets++; | |
0da34b6d BG |
1339 | dev_kfree_skb_irq(skb); |
1340 | if (len) | |
1341 | pci_unmap_single(pdev, | |
1342 | pci_unmap_addr(&tx->info[idx], | |
1343 | bus), len, | |
1344 | PCI_DMA_TODEVICE); | |
1345 | } else { | |
1346 | if (len) | |
1347 | pci_unmap_page(pdev, | |
1348 | pci_unmap_addr(&tx->info[idx], | |
1349 | bus), len, | |
1350 | PCI_DMA_TODEVICE); | |
1351 | } | |
0da34b6d BG |
1352 | } |
1353 | /* start the queue if we've stopped it */ | |
b53bef84 | 1354 | if (netif_queue_stopped(ss->dev) |
0da34b6d | 1355 | && tx->req - tx->done < (tx->mask >> 1)) { |
b53bef84 BG |
1356 | tx->wake_queue++; |
1357 | netif_wake_queue(ss->dev); | |
0da34b6d BG |
1358 | } |
1359 | } | |
1360 | ||
b53bef84 BG |
1361 | static inline int |
1362 | myri10ge_clean_rx_done(struct myri10ge_slice_state *ss, int budget) | |
0da34b6d | 1363 | { |
b53bef84 BG |
1364 | struct myri10ge_rx_done *rx_done = &ss->rx_done; |
1365 | struct myri10ge_priv *mgp = ss->mgp; | |
0da34b6d BG |
1366 | unsigned long rx_bytes = 0; |
1367 | unsigned long rx_packets = 0; | |
1368 | unsigned long rx_ok; | |
1369 | ||
1370 | int idx = rx_done->idx; | |
1371 | int cnt = rx_done->cnt; | |
bea3348e | 1372 | int work_done = 0; |
0da34b6d | 1373 | u16 length; |
40f6cff5 | 1374 | __wsum checksum; |
0da34b6d | 1375 | |
c956a240 | 1376 | while (rx_done->entry[idx].length != 0 && work_done < budget) { |
0da34b6d BG |
1377 | length = ntohs(rx_done->entry[idx].length); |
1378 | rx_done->entry[idx].length = 0; | |
40f6cff5 | 1379 | checksum = csum_unfold(rx_done->entry[idx].checksum); |
0da34b6d | 1380 | if (length <= mgp->small_bytes) |
b53bef84 | 1381 | rx_ok = myri10ge_rx_done(ss, &ss->rx_small, |
52ea6fb3 BG |
1382 | mgp->small_bytes, |
1383 | length, checksum); | |
0da34b6d | 1384 | else |
b53bef84 | 1385 | rx_ok = myri10ge_rx_done(ss, &ss->rx_big, |
52ea6fb3 BG |
1386 | mgp->big_bytes, |
1387 | length, checksum); | |
0da34b6d BG |
1388 | rx_packets += rx_ok; |
1389 | rx_bytes += rx_ok * (unsigned long)length; | |
1390 | cnt++; | |
014377a1 | 1391 | idx = cnt & (mgp->max_intr_slots - 1); |
c956a240 | 1392 | work_done++; |
0da34b6d BG |
1393 | } |
1394 | rx_done->idx = idx; | |
1395 | rx_done->cnt = cnt; | |
b53bef84 BG |
1396 | ss->stats.rx_packets += rx_packets; |
1397 | ss->stats.rx_bytes += rx_bytes; | |
c7dab99b | 1398 | |
1e6e9342 AG |
1399 | if (myri10ge_lro) |
1400 | lro_flush_all(&rx_done->lro_mgr); | |
1401 | ||
c7dab99b | 1402 | /* restock receive rings if needed */ |
b53bef84 BG |
1403 | if (ss->rx_small.fill_cnt - ss->rx_small.cnt < myri10ge_fill_thresh) |
1404 | myri10ge_alloc_rx_pages(mgp, &ss->rx_small, | |
c7dab99b | 1405 | mgp->small_bytes + MXGEFW_PAD, 0); |
b53bef84 BG |
1406 | if (ss->rx_big.fill_cnt - ss->rx_big.cnt < myri10ge_fill_thresh) |
1407 | myri10ge_alloc_rx_pages(mgp, &ss->rx_big, mgp->big_bytes, 0); | |
c7dab99b | 1408 | |
bea3348e | 1409 | return work_done; |
0da34b6d BG |
1410 | } |
1411 | ||
1412 | static inline void myri10ge_check_statblock(struct myri10ge_priv *mgp) | |
1413 | { | |
0dcffac1 | 1414 | struct mcp_irq_data *stats = mgp->ss[0].fw_stats; |
0da34b6d BG |
1415 | |
1416 | if (unlikely(stats->stats_updated)) { | |
798a95db BG |
1417 | unsigned link_up = ntohl(stats->link_up); |
1418 | if (mgp->link_state != link_up) { | |
1419 | mgp->link_state = link_up; | |
1420 | ||
1421 | if (mgp->link_state == MXGEFW_LINK_UP) { | |
c58ac5ca BG |
1422 | if (netif_msg_link(mgp)) |
1423 | printk(KERN_INFO | |
1424 | "myri10ge: %s: link up\n", | |
1425 | mgp->dev->name); | |
0da34b6d | 1426 | netif_carrier_on(mgp->dev); |
c58ac5ca | 1427 | mgp->link_changes++; |
0da34b6d | 1428 | } else { |
c58ac5ca BG |
1429 | if (netif_msg_link(mgp)) |
1430 | printk(KERN_INFO | |
798a95db BG |
1431 | "myri10ge: %s: link %s\n", |
1432 | mgp->dev->name, | |
1433 | (link_up == MXGEFW_LINK_MYRINET ? | |
1434 | "mismatch (Myrinet detected)" : | |
1435 | "down")); | |
0da34b6d | 1436 | netif_carrier_off(mgp->dev); |
c58ac5ca | 1437 | mgp->link_changes++; |
0da34b6d BG |
1438 | } |
1439 | } | |
1440 | if (mgp->rdma_tags_available != | |
b53bef84 | 1441 | ntohl(stats->rdma_tags_available)) { |
0da34b6d | 1442 | mgp->rdma_tags_available = |
b53bef84 | 1443 | ntohl(stats->rdma_tags_available); |
0da34b6d BG |
1444 | printk(KERN_WARNING "myri10ge: %s: RDMA timed out! " |
1445 | "%d tags left\n", mgp->dev->name, | |
1446 | mgp->rdma_tags_available); | |
1447 | } | |
1448 | mgp->down_cnt += stats->link_down; | |
1449 | if (stats->link_down) | |
1450 | wake_up(&mgp->down_wq); | |
1451 | } | |
1452 | } | |
1453 | ||
bea3348e | 1454 | static int myri10ge_poll(struct napi_struct *napi, int budget) |
0da34b6d | 1455 | { |
b53bef84 BG |
1456 | struct myri10ge_slice_state *ss = |
1457 | container_of(napi, struct myri10ge_slice_state, napi); | |
1458 | struct net_device *netdev = ss->mgp->dev; | |
bea3348e | 1459 | int work_done; |
0da34b6d | 1460 | |
981813d8 BG |
1461 | #ifdef CONFIG_DCA |
1462 | if (ss->mgp->dca_enabled) | |
1463 | myri10ge_update_dca(ss); | |
1464 | #endif | |
1465 | ||
0da34b6d | 1466 | /* process as many rx events as NAPI will allow */ |
b53bef84 | 1467 | work_done = myri10ge_clean_rx_done(ss, budget); |
0da34b6d | 1468 | |
4ec24119 | 1469 | if (work_done < budget) { |
bea3348e | 1470 | netif_rx_complete(netdev, napi); |
b53bef84 | 1471 | put_be32(htonl(3), ss->irq_claim); |
0da34b6d | 1472 | } |
bea3348e | 1473 | return work_done; |
0da34b6d BG |
1474 | } |
1475 | ||
7d12e780 | 1476 | static irqreturn_t myri10ge_intr(int irq, void *arg) |
0da34b6d | 1477 | { |
b53bef84 BG |
1478 | struct myri10ge_slice_state *ss = arg; |
1479 | struct myri10ge_priv *mgp = ss->mgp; | |
1480 | struct mcp_irq_data *stats = ss->fw_stats; | |
1481 | struct myri10ge_tx_buf *tx = &ss->tx; | |
0da34b6d BG |
1482 | u32 send_done_count; |
1483 | int i; | |
1484 | ||
0dcffac1 BG |
1485 | /* an interrupt on a non-zero slice is implicitly valid |
1486 | * since MSI-X irqs are not shared */ | |
1487 | if (ss != mgp->ss) { | |
1488 | netif_rx_schedule(ss->dev, &ss->napi); | |
1489 | return (IRQ_HANDLED); | |
1490 | } | |
1491 | ||
0da34b6d BG |
1492 | /* make sure it is our IRQ, and that the DMA has finished */ |
1493 | if (unlikely(!stats->valid)) | |
1494 | return (IRQ_NONE); | |
1495 | ||
1496 | /* low bit indicates receives are present, so schedule | |
1497 | * napi poll handler */ | |
1498 | if (stats->valid & 1) | |
b53bef84 | 1499 | netif_rx_schedule(ss->dev, &ss->napi); |
0da34b6d | 1500 | |
0dcffac1 | 1501 | if (!mgp->msi_enabled && !mgp->msix_enabled) { |
40f6cff5 | 1502 | put_be32(0, mgp->irq_deassert); |
0da34b6d BG |
1503 | if (!myri10ge_deassert_wait) |
1504 | stats->valid = 0; | |
1505 | mb(); | |
1506 | } else | |
1507 | stats->valid = 0; | |
1508 | ||
1509 | /* Wait for IRQ line to go low, if using INTx */ | |
1510 | i = 0; | |
1511 | while (1) { | |
1512 | i++; | |
1513 | /* check for transmit completes and receives */ | |
1514 | send_done_count = ntohl(stats->send_done_count); | |
1515 | if (send_done_count != tx->pkt_done) | |
b53bef84 | 1516 | myri10ge_tx_done(ss, (int)send_done_count); |
0da34b6d BG |
1517 | if (unlikely(i > myri10ge_max_irq_loops)) { |
1518 | printk(KERN_WARNING "myri10ge: %s: irq stuck?\n", | |
1519 | mgp->dev->name); | |
1520 | stats->valid = 0; | |
1521 | schedule_work(&mgp->watchdog_work); | |
1522 | } | |
1523 | if (likely(stats->valid == 0)) | |
1524 | break; | |
1525 | cpu_relax(); | |
1526 | barrier(); | |
1527 | } | |
1528 | ||
1529 | myri10ge_check_statblock(mgp); | |
1530 | ||
b53bef84 | 1531 | put_be32(htonl(3), ss->irq_claim + 1); |
0da34b6d BG |
1532 | return (IRQ_HANDLED); |
1533 | } | |
1534 | ||
1535 | static int | |
1536 | myri10ge_get_settings(struct net_device *netdev, struct ethtool_cmd *cmd) | |
1537 | { | |
c0bf8801 BG |
1538 | struct myri10ge_priv *mgp = netdev_priv(netdev); |
1539 | char *ptr; | |
1540 | int i; | |
1541 | ||
0da34b6d BG |
1542 | cmd->autoneg = AUTONEG_DISABLE; |
1543 | cmd->speed = SPEED_10000; | |
1544 | cmd->duplex = DUPLEX_FULL; | |
c0bf8801 BG |
1545 | |
1546 | /* | |
1547 | * parse the product code to deterimine the interface type | |
1548 | * (CX4, XFP, Quad Ribbon Fiber) by looking at the character | |
1549 | * after the 3rd dash in the driver's cached copy of the | |
1550 | * EEPROM's product code string. | |
1551 | */ | |
1552 | ptr = mgp->product_code_string; | |
1553 | if (ptr == NULL) { | |
1554 | printk(KERN_ERR "myri10ge: %s: Missing product code\n", | |
99f5f87e | 1555 | netdev->name); |
c0bf8801 BG |
1556 | return 0; |
1557 | } | |
1558 | for (i = 0; i < 3; i++, ptr++) { | |
1559 | ptr = strchr(ptr, '-'); | |
1560 | if (ptr == NULL) { | |
1561 | printk(KERN_ERR "myri10ge: %s: Invalid product " | |
1562 | "code %s\n", netdev->name, | |
1563 | mgp->product_code_string); | |
1564 | return 0; | |
1565 | } | |
1566 | } | |
1567 | if (*ptr == 'R' || *ptr == 'Q') { | |
1568 | /* We've found either an XFP or quad ribbon fiber */ | |
1569 | cmd->port = PORT_FIBRE; | |
1570 | } | |
0da34b6d BG |
1571 | return 0; |
1572 | } | |
1573 | ||
1574 | static void | |
1575 | myri10ge_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) | |
1576 | { | |
1577 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1578 | ||
1579 | strlcpy(info->driver, "myri10ge", sizeof(info->driver)); | |
1580 | strlcpy(info->version, MYRI10GE_VERSION_STR, sizeof(info->version)); | |
1581 | strlcpy(info->fw_version, mgp->fw_version, sizeof(info->fw_version)); | |
1582 | strlcpy(info->bus_info, pci_name(mgp->pdev), sizeof(info->bus_info)); | |
1583 | } | |
1584 | ||
1585 | static int | |
1586 | myri10ge_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal) | |
1587 | { | |
1588 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
99f5f87e | 1589 | |
0da34b6d BG |
1590 | coal->rx_coalesce_usecs = mgp->intr_coal_delay; |
1591 | return 0; | |
1592 | } | |
1593 | ||
1594 | static int | |
1595 | myri10ge_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal) | |
1596 | { | |
1597 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1598 | ||
1599 | mgp->intr_coal_delay = coal->rx_coalesce_usecs; | |
40f6cff5 | 1600 | put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr); |
0da34b6d BG |
1601 | return 0; |
1602 | } | |
1603 | ||
1604 | static void | |
1605 | myri10ge_get_pauseparam(struct net_device *netdev, | |
1606 | struct ethtool_pauseparam *pause) | |
1607 | { | |
1608 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1609 | ||
1610 | pause->autoneg = 0; | |
1611 | pause->rx_pause = mgp->pause; | |
1612 | pause->tx_pause = mgp->pause; | |
1613 | } | |
1614 | ||
1615 | static int | |
1616 | myri10ge_set_pauseparam(struct net_device *netdev, | |
1617 | struct ethtool_pauseparam *pause) | |
1618 | { | |
1619 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1620 | ||
1621 | if (pause->tx_pause != mgp->pause) | |
1622 | return myri10ge_change_pause(mgp, pause->tx_pause); | |
1623 | if (pause->rx_pause != mgp->pause) | |
1624 | return myri10ge_change_pause(mgp, pause->tx_pause); | |
1625 | if (pause->autoneg != 0) | |
1626 | return -EINVAL; | |
1627 | return 0; | |
1628 | } | |
1629 | ||
1630 | static void | |
1631 | myri10ge_get_ringparam(struct net_device *netdev, | |
1632 | struct ethtool_ringparam *ring) | |
1633 | { | |
1634 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1635 | ||
0dcffac1 BG |
1636 | ring->rx_mini_max_pending = mgp->ss[0].rx_small.mask + 1; |
1637 | ring->rx_max_pending = mgp->ss[0].rx_big.mask + 1; | |
0da34b6d | 1638 | ring->rx_jumbo_max_pending = 0; |
0dcffac1 | 1639 | ring->tx_max_pending = mgp->ss[0].rx_small.mask + 1; |
0da34b6d BG |
1640 | ring->rx_mini_pending = ring->rx_mini_max_pending; |
1641 | ring->rx_pending = ring->rx_max_pending; | |
1642 | ring->rx_jumbo_pending = ring->rx_jumbo_max_pending; | |
1643 | ring->tx_pending = ring->tx_max_pending; | |
1644 | } | |
1645 | ||
1646 | static u32 myri10ge_get_rx_csum(struct net_device *netdev) | |
1647 | { | |
1648 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
99f5f87e | 1649 | |
0da34b6d BG |
1650 | if (mgp->csum_flag) |
1651 | return 1; | |
1652 | else | |
1653 | return 0; | |
1654 | } | |
1655 | ||
1656 | static int myri10ge_set_rx_csum(struct net_device *netdev, u32 csum_enabled) | |
1657 | { | |
1658 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
99f5f87e | 1659 | |
0da34b6d BG |
1660 | if (csum_enabled) |
1661 | mgp->csum_flag = MXGEFW_FLAGS_CKSUM; | |
1662 | else | |
1663 | mgp->csum_flag = 0; | |
1664 | return 0; | |
1665 | } | |
1666 | ||
4f93fde0 BG |
1667 | static int myri10ge_set_tso(struct net_device *netdev, u32 tso_enabled) |
1668 | { | |
1669 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1670 | unsigned long flags = mgp->features & (NETIF_F_TSO6 | NETIF_F_TSO); | |
1671 | ||
1672 | if (tso_enabled) | |
1673 | netdev->features |= flags; | |
1674 | else | |
1675 | netdev->features &= ~flags; | |
1676 | return 0; | |
1677 | } | |
1678 | ||
b53bef84 | 1679 | static const char myri10ge_gstrings_main_stats[][ETH_GSTRING_LEN] = { |
0da34b6d BG |
1680 | "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors", |
1681 | "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions", | |
1682 | "rx_length_errors", "rx_over_errors", "rx_crc_errors", | |
1683 | "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors", | |
1684 | "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors", | |
1685 | "tx_heartbeat_errors", "tx_window_errors", | |
1686 | /* device-specific stats */ | |
0dcffac1 | 1687 | "tx_boundary", "WC", "irq", "MSI", "MSIX", |
0da34b6d | 1688 | "read_dma_bw_MBs", "write_dma_bw_MBs", "read_write_dma_bw_MBs", |
b53bef84 | 1689 | "serial_number", "watchdog_resets", |
981813d8 BG |
1690 | #ifdef CONFIG_DCA |
1691 | "dca_capable", "dca_enabled", | |
1692 | #endif | |
c58ac5ca | 1693 | "link_changes", "link_up", "dropped_link_overflow", |
cee505db BG |
1694 | "dropped_link_error_or_filtered", |
1695 | "dropped_pause", "dropped_bad_phy", "dropped_bad_crc32", | |
1696 | "dropped_unicast_filtered", "dropped_multicast_filtered", | |
0da34b6d | 1697 | "dropped_runt", "dropped_overrun", "dropped_no_small_buffer", |
b53bef84 BG |
1698 | "dropped_no_big_buffer" |
1699 | }; | |
1700 | ||
1701 | static const char myri10ge_gstrings_slice_stats[][ETH_GSTRING_LEN] = { | |
1702 | "----------- slice ---------", | |
1703 | "tx_pkt_start", "tx_pkt_done", "tx_req", "tx_done", | |
1704 | "rx_small_cnt", "rx_big_cnt", | |
1705 | "wake_queue", "stop_queue", "tx_linearized", "LRO aggregated", | |
1706 | "LRO flushed", | |
1e6e9342 | 1707 | "LRO avg aggr", "LRO no_desc" |
0da34b6d BG |
1708 | }; |
1709 | ||
1710 | #define MYRI10GE_NET_STATS_LEN 21 | |
b53bef84 BG |
1711 | #define MYRI10GE_MAIN_STATS_LEN ARRAY_SIZE(myri10ge_gstrings_main_stats) |
1712 | #define MYRI10GE_SLICE_STATS_LEN ARRAY_SIZE(myri10ge_gstrings_slice_stats) | |
0da34b6d BG |
1713 | |
1714 | static void | |
1715 | myri10ge_get_strings(struct net_device *netdev, u32 stringset, u8 * data) | |
1716 | { | |
0dcffac1 BG |
1717 | struct myri10ge_priv *mgp = netdev_priv(netdev); |
1718 | int i; | |
1719 | ||
0da34b6d BG |
1720 | switch (stringset) { |
1721 | case ETH_SS_STATS: | |
b53bef84 BG |
1722 | memcpy(data, *myri10ge_gstrings_main_stats, |
1723 | sizeof(myri10ge_gstrings_main_stats)); | |
1724 | data += sizeof(myri10ge_gstrings_main_stats); | |
0dcffac1 BG |
1725 | for (i = 0; i < mgp->num_slices; i++) { |
1726 | memcpy(data, *myri10ge_gstrings_slice_stats, | |
1727 | sizeof(myri10ge_gstrings_slice_stats)); | |
1728 | data += sizeof(myri10ge_gstrings_slice_stats); | |
1729 | } | |
0da34b6d BG |
1730 | break; |
1731 | } | |
1732 | } | |
1733 | ||
b9f2c044 | 1734 | static int myri10ge_get_sset_count(struct net_device *netdev, int sset) |
0da34b6d | 1735 | { |
0dcffac1 BG |
1736 | struct myri10ge_priv *mgp = netdev_priv(netdev); |
1737 | ||
b9f2c044 JG |
1738 | switch (sset) { |
1739 | case ETH_SS_STATS: | |
0dcffac1 BG |
1740 | return MYRI10GE_MAIN_STATS_LEN + |
1741 | mgp->num_slices * MYRI10GE_SLICE_STATS_LEN; | |
b9f2c044 JG |
1742 | default: |
1743 | return -EOPNOTSUPP; | |
1744 | } | |
0da34b6d BG |
1745 | } |
1746 | ||
1747 | static void | |
1748 | myri10ge_get_ethtool_stats(struct net_device *netdev, | |
1749 | struct ethtool_stats *stats, u64 * data) | |
1750 | { | |
1751 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
b53bef84 | 1752 | struct myri10ge_slice_state *ss; |
0dcffac1 | 1753 | int slice; |
0da34b6d BG |
1754 | int i; |
1755 | ||
1756 | for (i = 0; i < MYRI10GE_NET_STATS_LEN; i++) | |
1757 | data[i] = ((unsigned long *)&mgp->stats)[i]; | |
1758 | ||
b53bef84 | 1759 | data[i++] = (unsigned int)mgp->tx_boundary; |
276e26c3 | 1760 | data[i++] = (unsigned int)mgp->wc_enabled; |
2c1a1088 BG |
1761 | data[i++] = (unsigned int)mgp->pdev->irq; |
1762 | data[i++] = (unsigned int)mgp->msi_enabled; | |
0dcffac1 | 1763 | data[i++] = (unsigned int)mgp->msix_enabled; |
0da34b6d BG |
1764 | data[i++] = (unsigned int)mgp->read_dma; |
1765 | data[i++] = (unsigned int)mgp->write_dma; | |
1766 | data[i++] = (unsigned int)mgp->read_write_dma; | |
1767 | data[i++] = (unsigned int)mgp->serial_number; | |
0da34b6d | 1768 | data[i++] = (unsigned int)mgp->watchdog_resets; |
981813d8 BG |
1769 | #ifdef CONFIG_DCA |
1770 | data[i++] = (unsigned int)(mgp->ss[0].dca_tag != NULL); | |
1771 | data[i++] = (unsigned int)(mgp->dca_enabled); | |
1772 | #endif | |
c58ac5ca | 1773 | data[i++] = (unsigned int)mgp->link_changes; |
b53bef84 BG |
1774 | |
1775 | /* firmware stats are useful only in the first slice */ | |
0dcffac1 | 1776 | ss = &mgp->ss[0]; |
b53bef84 BG |
1777 | data[i++] = (unsigned int)ntohl(ss->fw_stats->link_up); |
1778 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_link_overflow); | |
cee505db | 1779 | data[i++] = |
b53bef84 BG |
1780 | (unsigned int)ntohl(ss->fw_stats->dropped_link_error_or_filtered); |
1781 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_pause); | |
1782 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_bad_phy); | |
1783 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_bad_crc32); | |
1784 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_unicast_filtered); | |
85a7ea1b | 1785 | data[i++] = |
b53bef84 BG |
1786 | (unsigned int)ntohl(ss->fw_stats->dropped_multicast_filtered); |
1787 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_runt); | |
1788 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_overrun); | |
1789 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_no_small_buffer); | |
1790 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_no_big_buffer); | |
1791 | ||
0dcffac1 BG |
1792 | for (slice = 0; slice < mgp->num_slices; slice++) { |
1793 | ss = &mgp->ss[slice]; | |
1794 | data[i++] = slice; | |
1795 | data[i++] = (unsigned int)ss->tx.pkt_start; | |
1796 | data[i++] = (unsigned int)ss->tx.pkt_done; | |
1797 | data[i++] = (unsigned int)ss->tx.req; | |
1798 | data[i++] = (unsigned int)ss->tx.done; | |
1799 | data[i++] = (unsigned int)ss->rx_small.cnt; | |
1800 | data[i++] = (unsigned int)ss->rx_big.cnt; | |
1801 | data[i++] = (unsigned int)ss->tx.wake_queue; | |
1802 | data[i++] = (unsigned int)ss->tx.stop_queue; | |
1803 | data[i++] = (unsigned int)ss->tx.linearized; | |
1804 | data[i++] = ss->rx_done.lro_mgr.stats.aggregated; | |
1805 | data[i++] = ss->rx_done.lro_mgr.stats.flushed; | |
1806 | if (ss->rx_done.lro_mgr.stats.flushed) | |
1807 | data[i++] = ss->rx_done.lro_mgr.stats.aggregated / | |
1808 | ss->rx_done.lro_mgr.stats.flushed; | |
1809 | else | |
1810 | data[i++] = 0; | |
1811 | data[i++] = ss->rx_done.lro_mgr.stats.no_desc; | |
1812 | } | |
0da34b6d BG |
1813 | } |
1814 | ||
c58ac5ca BG |
1815 | static void myri10ge_set_msglevel(struct net_device *netdev, u32 value) |
1816 | { | |
1817 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1818 | mgp->msg_enable = value; | |
1819 | } | |
1820 | ||
1821 | static u32 myri10ge_get_msglevel(struct net_device *netdev) | |
1822 | { | |
1823 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1824 | return mgp->msg_enable; | |
1825 | } | |
1826 | ||
7282d491 | 1827 | static const struct ethtool_ops myri10ge_ethtool_ops = { |
0da34b6d BG |
1828 | .get_settings = myri10ge_get_settings, |
1829 | .get_drvinfo = myri10ge_get_drvinfo, | |
1830 | .get_coalesce = myri10ge_get_coalesce, | |
1831 | .set_coalesce = myri10ge_set_coalesce, | |
1832 | .get_pauseparam = myri10ge_get_pauseparam, | |
1833 | .set_pauseparam = myri10ge_set_pauseparam, | |
1834 | .get_ringparam = myri10ge_get_ringparam, | |
1835 | .get_rx_csum = myri10ge_get_rx_csum, | |
1836 | .set_rx_csum = myri10ge_set_rx_csum, | |
b10c0668 | 1837 | .set_tx_csum = ethtool_op_set_tx_hw_csum, |
0da34b6d | 1838 | .set_sg = ethtool_op_set_sg, |
4f93fde0 | 1839 | .set_tso = myri10ge_set_tso, |
6ffdd071 | 1840 | .get_link = ethtool_op_get_link, |
0da34b6d | 1841 | .get_strings = myri10ge_get_strings, |
b9f2c044 | 1842 | .get_sset_count = myri10ge_get_sset_count, |
c58ac5ca BG |
1843 | .get_ethtool_stats = myri10ge_get_ethtool_stats, |
1844 | .set_msglevel = myri10ge_set_msglevel, | |
1845 | .get_msglevel = myri10ge_get_msglevel | |
0da34b6d BG |
1846 | }; |
1847 | ||
b53bef84 | 1848 | static int myri10ge_allocate_rings(struct myri10ge_slice_state *ss) |
0da34b6d | 1849 | { |
b53bef84 | 1850 | struct myri10ge_priv *mgp = ss->mgp; |
0da34b6d | 1851 | struct myri10ge_cmd cmd; |
b53bef84 | 1852 | struct net_device *dev = mgp->dev; |
0da34b6d BG |
1853 | int tx_ring_size, rx_ring_size; |
1854 | int tx_ring_entries, rx_ring_entries; | |
0dcffac1 | 1855 | int i, slice, status; |
0da34b6d BG |
1856 | size_t bytes; |
1857 | ||
0da34b6d | 1858 | /* get ring sizes */ |
0dcffac1 BG |
1859 | slice = ss - mgp->ss; |
1860 | cmd.data0 = slice; | |
0da34b6d BG |
1861 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_RING_SIZE, &cmd, 0); |
1862 | tx_ring_size = cmd.data0; | |
0dcffac1 | 1863 | cmd.data0 = slice; |
0da34b6d | 1864 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_RX_RING_SIZE, &cmd, 0); |
355c7265 BG |
1865 | if (status != 0) |
1866 | return status; | |
0da34b6d BG |
1867 | rx_ring_size = cmd.data0; |
1868 | ||
1869 | tx_ring_entries = tx_ring_size / sizeof(struct mcp_kreq_ether_send); | |
1870 | rx_ring_entries = rx_ring_size / sizeof(struct mcp_dma_addr); | |
b53bef84 BG |
1871 | ss->tx.mask = tx_ring_entries - 1; |
1872 | ss->rx_small.mask = ss->rx_big.mask = rx_ring_entries - 1; | |
0da34b6d | 1873 | |
355c7265 BG |
1874 | status = -ENOMEM; |
1875 | ||
0da34b6d BG |
1876 | /* allocate the host shadow rings */ |
1877 | ||
1878 | bytes = 8 + (MYRI10GE_MAX_SEND_DESC_TSO + 4) | |
b53bef84 BG |
1879 | * sizeof(*ss->tx.req_list); |
1880 | ss->tx.req_bytes = kzalloc(bytes, GFP_KERNEL); | |
1881 | if (ss->tx.req_bytes == NULL) | |
0da34b6d BG |
1882 | goto abort_with_nothing; |
1883 | ||
1884 | /* ensure req_list entries are aligned to 8 bytes */ | |
b53bef84 BG |
1885 | ss->tx.req_list = (struct mcp_kreq_ether_send *) |
1886 | ALIGN((unsigned long)ss->tx.req_bytes, 8); | |
0da34b6d | 1887 | |
b53bef84 BG |
1888 | bytes = rx_ring_entries * sizeof(*ss->rx_small.shadow); |
1889 | ss->rx_small.shadow = kzalloc(bytes, GFP_KERNEL); | |
1890 | if (ss->rx_small.shadow == NULL) | |
0da34b6d BG |
1891 | goto abort_with_tx_req_bytes; |
1892 | ||
b53bef84 BG |
1893 | bytes = rx_ring_entries * sizeof(*ss->rx_big.shadow); |
1894 | ss->rx_big.shadow = kzalloc(bytes, GFP_KERNEL); | |
1895 | if (ss->rx_big.shadow == NULL) | |
0da34b6d BG |
1896 | goto abort_with_rx_small_shadow; |
1897 | ||
1898 | /* allocate the host info rings */ | |
1899 | ||
b53bef84 BG |
1900 | bytes = tx_ring_entries * sizeof(*ss->tx.info); |
1901 | ss->tx.info = kzalloc(bytes, GFP_KERNEL); | |
1902 | if (ss->tx.info == NULL) | |
0da34b6d BG |
1903 | goto abort_with_rx_big_shadow; |
1904 | ||
b53bef84 BG |
1905 | bytes = rx_ring_entries * sizeof(*ss->rx_small.info); |
1906 | ss->rx_small.info = kzalloc(bytes, GFP_KERNEL); | |
1907 | if (ss->rx_small.info == NULL) | |
0da34b6d BG |
1908 | goto abort_with_tx_info; |
1909 | ||
b53bef84 BG |
1910 | bytes = rx_ring_entries * sizeof(*ss->rx_big.info); |
1911 | ss->rx_big.info = kzalloc(bytes, GFP_KERNEL); | |
1912 | if (ss->rx_big.info == NULL) | |
0da34b6d BG |
1913 | goto abort_with_rx_small_info; |
1914 | ||
1915 | /* Fill the receive rings */ | |
b53bef84 BG |
1916 | ss->rx_big.cnt = 0; |
1917 | ss->rx_small.cnt = 0; | |
1918 | ss->rx_big.fill_cnt = 0; | |
1919 | ss->rx_small.fill_cnt = 0; | |
1920 | ss->rx_small.page_offset = MYRI10GE_ALLOC_SIZE; | |
1921 | ss->rx_big.page_offset = MYRI10GE_ALLOC_SIZE; | |
1922 | ss->rx_small.watchdog_needed = 0; | |
1923 | ss->rx_big.watchdog_needed = 0; | |
1924 | myri10ge_alloc_rx_pages(mgp, &ss->rx_small, | |
c7dab99b | 1925 | mgp->small_bytes + MXGEFW_PAD, 0); |
0da34b6d | 1926 | |
b53bef84 | 1927 | if (ss->rx_small.fill_cnt < ss->rx_small.mask + 1) { |
0dcffac1 BG |
1928 | printk(KERN_ERR |
1929 | "myri10ge: %s:slice-%d: alloced only %d small bufs\n", | |
1930 | dev->name, slice, ss->rx_small.fill_cnt); | |
c7dab99b | 1931 | goto abort_with_rx_small_ring; |
0da34b6d BG |
1932 | } |
1933 | ||
b53bef84 BG |
1934 | myri10ge_alloc_rx_pages(mgp, &ss->rx_big, mgp->big_bytes, 0); |
1935 | if (ss->rx_big.fill_cnt < ss->rx_big.mask + 1) { | |
0dcffac1 BG |
1936 | printk(KERN_ERR |
1937 | "myri10ge: %s:slice-%d: alloced only %d big bufs\n", | |
1938 | dev->name, slice, ss->rx_big.fill_cnt); | |
c7dab99b | 1939 | goto abort_with_rx_big_ring; |
0da34b6d BG |
1940 | } |
1941 | ||
1942 | return 0; | |
1943 | ||
1944 | abort_with_rx_big_ring: | |
b53bef84 BG |
1945 | for (i = ss->rx_big.cnt; i < ss->rx_big.fill_cnt; i++) { |
1946 | int idx = i & ss->rx_big.mask; | |
1947 | myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_big.info[idx], | |
c7dab99b | 1948 | mgp->big_bytes); |
b53bef84 | 1949 | put_page(ss->rx_big.info[idx].page); |
0da34b6d BG |
1950 | } |
1951 | ||
1952 | abort_with_rx_small_ring: | |
b53bef84 BG |
1953 | for (i = ss->rx_small.cnt; i < ss->rx_small.fill_cnt; i++) { |
1954 | int idx = i & ss->rx_small.mask; | |
1955 | myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_small.info[idx], | |
c7dab99b | 1956 | mgp->small_bytes + MXGEFW_PAD); |
b53bef84 | 1957 | put_page(ss->rx_small.info[idx].page); |
0da34b6d | 1958 | } |
c7dab99b | 1959 | |
b53bef84 | 1960 | kfree(ss->rx_big.info); |
0da34b6d BG |
1961 | |
1962 | abort_with_rx_small_info: | |
b53bef84 | 1963 | kfree(ss->rx_small.info); |
0da34b6d BG |
1964 | |
1965 | abort_with_tx_info: | |
b53bef84 | 1966 | kfree(ss->tx.info); |
0da34b6d BG |
1967 | |
1968 | abort_with_rx_big_shadow: | |
b53bef84 | 1969 | kfree(ss->rx_big.shadow); |
0da34b6d BG |
1970 | |
1971 | abort_with_rx_small_shadow: | |
b53bef84 | 1972 | kfree(ss->rx_small.shadow); |
0da34b6d BG |
1973 | |
1974 | abort_with_tx_req_bytes: | |
b53bef84 BG |
1975 | kfree(ss->tx.req_bytes); |
1976 | ss->tx.req_bytes = NULL; | |
1977 | ss->tx.req_list = NULL; | |
0da34b6d BG |
1978 | |
1979 | abort_with_nothing: | |
1980 | return status; | |
1981 | } | |
1982 | ||
b53bef84 | 1983 | static void myri10ge_free_rings(struct myri10ge_slice_state *ss) |
0da34b6d | 1984 | { |
b53bef84 | 1985 | struct myri10ge_priv *mgp = ss->mgp; |
0da34b6d BG |
1986 | struct sk_buff *skb; |
1987 | struct myri10ge_tx_buf *tx; | |
1988 | int i, len, idx; | |
1989 | ||
0dcffac1 BG |
1990 | /* If not allocated, skip it */ |
1991 | if (ss->tx.req_list == NULL) | |
1992 | return; | |
1993 | ||
b53bef84 BG |
1994 | for (i = ss->rx_big.cnt; i < ss->rx_big.fill_cnt; i++) { |
1995 | idx = i & ss->rx_big.mask; | |
1996 | if (i == ss->rx_big.fill_cnt - 1) | |
1997 | ss->rx_big.info[idx].page_offset = MYRI10GE_ALLOC_SIZE; | |
1998 | myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_big.info[idx], | |
c7dab99b | 1999 | mgp->big_bytes); |
b53bef84 | 2000 | put_page(ss->rx_big.info[idx].page); |
0da34b6d BG |
2001 | } |
2002 | ||
b53bef84 BG |
2003 | for (i = ss->rx_small.cnt; i < ss->rx_small.fill_cnt; i++) { |
2004 | idx = i & ss->rx_small.mask; | |
2005 | if (i == ss->rx_small.fill_cnt - 1) | |
2006 | ss->rx_small.info[idx].page_offset = | |
c7dab99b | 2007 | MYRI10GE_ALLOC_SIZE; |
b53bef84 | 2008 | myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_small.info[idx], |
c7dab99b | 2009 | mgp->small_bytes + MXGEFW_PAD); |
b53bef84 | 2010 | put_page(ss->rx_small.info[idx].page); |
c7dab99b | 2011 | } |
b53bef84 | 2012 | tx = &ss->tx; |
0da34b6d BG |
2013 | while (tx->done != tx->req) { |
2014 | idx = tx->done & tx->mask; | |
2015 | skb = tx->info[idx].skb; | |
2016 | ||
2017 | /* Mark as free */ | |
2018 | tx->info[idx].skb = NULL; | |
2019 | tx->done++; | |
2020 | len = pci_unmap_len(&tx->info[idx], len); | |
2021 | pci_unmap_len_set(&tx->info[idx], len, 0); | |
2022 | if (skb) { | |
b53bef84 | 2023 | ss->stats.tx_dropped++; |
0da34b6d BG |
2024 | dev_kfree_skb_any(skb); |
2025 | if (len) | |
2026 | pci_unmap_single(mgp->pdev, | |
2027 | pci_unmap_addr(&tx->info[idx], | |
2028 | bus), len, | |
2029 | PCI_DMA_TODEVICE); | |
2030 | } else { | |
2031 | if (len) | |
2032 | pci_unmap_page(mgp->pdev, | |
2033 | pci_unmap_addr(&tx->info[idx], | |
2034 | bus), len, | |
2035 | PCI_DMA_TODEVICE); | |
2036 | } | |
2037 | } | |
b53bef84 | 2038 | kfree(ss->rx_big.info); |
0da34b6d | 2039 | |
b53bef84 | 2040 | kfree(ss->rx_small.info); |
0da34b6d | 2041 | |
b53bef84 | 2042 | kfree(ss->tx.info); |
0da34b6d | 2043 | |
b53bef84 | 2044 | kfree(ss->rx_big.shadow); |
0da34b6d | 2045 | |
b53bef84 | 2046 | kfree(ss->rx_small.shadow); |
0da34b6d | 2047 | |
b53bef84 BG |
2048 | kfree(ss->tx.req_bytes); |
2049 | ss->tx.req_bytes = NULL; | |
2050 | ss->tx.req_list = NULL; | |
0da34b6d BG |
2051 | } |
2052 | ||
df30a740 BG |
2053 | static int myri10ge_request_irq(struct myri10ge_priv *mgp) |
2054 | { | |
2055 | struct pci_dev *pdev = mgp->pdev; | |
0dcffac1 BG |
2056 | struct myri10ge_slice_state *ss; |
2057 | struct net_device *netdev = mgp->dev; | |
2058 | int i; | |
df30a740 BG |
2059 | int status; |
2060 | ||
0dcffac1 BG |
2061 | mgp->msi_enabled = 0; |
2062 | mgp->msix_enabled = 0; | |
2063 | status = 0; | |
df30a740 | 2064 | if (myri10ge_msi) { |
0dcffac1 BG |
2065 | if (mgp->num_slices > 1) { |
2066 | status = | |
2067 | pci_enable_msix(pdev, mgp->msix_vectors, | |
2068 | mgp->num_slices); | |
2069 | if (status == 0) { | |
2070 | mgp->msix_enabled = 1; | |
2071 | } else { | |
2072 | dev_err(&pdev->dev, | |
2073 | "Error %d setting up MSI-X\n", status); | |
2074 | return status; | |
2075 | } | |
2076 | } | |
2077 | if (mgp->msix_enabled == 0) { | |
2078 | status = pci_enable_msi(pdev); | |
2079 | if (status != 0) { | |
2080 | dev_err(&pdev->dev, | |
2081 | "Error %d setting up MSI; falling back to xPIC\n", | |
2082 | status); | |
2083 | } else { | |
2084 | mgp->msi_enabled = 1; | |
2085 | } | |
2086 | } | |
df30a740 | 2087 | } |
0dcffac1 BG |
2088 | if (mgp->msix_enabled) { |
2089 | for (i = 0; i < mgp->num_slices; i++) { | |
2090 | ss = &mgp->ss[i]; | |
2091 | snprintf(ss->irq_desc, sizeof(ss->irq_desc), | |
2092 | "%s:slice-%d", netdev->name, i); | |
2093 | status = request_irq(mgp->msix_vectors[i].vector, | |
2094 | myri10ge_intr, 0, ss->irq_desc, | |
2095 | ss); | |
2096 | if (status != 0) { | |
2097 | dev_err(&pdev->dev, | |
2098 | "slice %d failed to allocate IRQ\n", i); | |
2099 | i--; | |
2100 | while (i >= 0) { | |
2101 | free_irq(mgp->msix_vectors[i].vector, | |
2102 | &mgp->ss[i]); | |
2103 | i--; | |
2104 | } | |
2105 | pci_disable_msix(pdev); | |
2106 | return status; | |
2107 | } | |
2108 | } | |
2109 | } else { | |
2110 | status = request_irq(pdev->irq, myri10ge_intr, IRQF_SHARED, | |
2111 | mgp->dev->name, &mgp->ss[0]); | |
2112 | if (status != 0) { | |
2113 | dev_err(&pdev->dev, "failed to allocate IRQ\n"); | |
2114 | if (mgp->msi_enabled) | |
2115 | pci_disable_msi(pdev); | |
2116 | } | |
df30a740 BG |
2117 | } |
2118 | return status; | |
2119 | } | |
2120 | ||
2121 | static void myri10ge_free_irq(struct myri10ge_priv *mgp) | |
2122 | { | |
2123 | struct pci_dev *pdev = mgp->pdev; | |
0dcffac1 | 2124 | int i; |
df30a740 | 2125 | |
0dcffac1 BG |
2126 | if (mgp->msix_enabled) { |
2127 | for (i = 0; i < mgp->num_slices; i++) | |
2128 | free_irq(mgp->msix_vectors[i].vector, &mgp->ss[i]); | |
2129 | } else { | |
2130 | free_irq(pdev->irq, &mgp->ss[0]); | |
2131 | } | |
df30a740 BG |
2132 | if (mgp->msi_enabled) |
2133 | pci_disable_msi(pdev); | |
0dcffac1 BG |
2134 | if (mgp->msix_enabled) |
2135 | pci_disable_msix(pdev); | |
df30a740 BG |
2136 | } |
2137 | ||
1e6e9342 AG |
2138 | static int |
2139 | myri10ge_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr, | |
2140 | void **ip_hdr, void **tcpudp_hdr, | |
2141 | u64 * hdr_flags, void *priv) | |
2142 | { | |
2143 | struct ethhdr *eh; | |
2144 | struct vlan_ethhdr *veh; | |
2145 | struct iphdr *iph; | |
2146 | u8 *va = page_address(frag->page) + frag->page_offset; | |
2147 | unsigned long ll_hlen; | |
66341fff AV |
2148 | /* passed opaque through lro_receive_frags() */ |
2149 | __wsum csum = (__force __wsum) (unsigned long)priv; | |
1e6e9342 AG |
2150 | |
2151 | /* find the mac header, aborting if not IPv4 */ | |
2152 | ||
2153 | eh = (struct ethhdr *)va; | |
2154 | *mac_hdr = eh; | |
2155 | ll_hlen = ETH_HLEN; | |
2156 | if (eh->h_proto != htons(ETH_P_IP)) { | |
2157 | if (eh->h_proto == htons(ETH_P_8021Q)) { | |
2158 | veh = (struct vlan_ethhdr *)va; | |
2159 | if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP)) | |
2160 | return -1; | |
2161 | ||
2162 | ll_hlen += VLAN_HLEN; | |
2163 | ||
2164 | /* | |
2165 | * HW checksum starts ETH_HLEN bytes into | |
2166 | * frame, so we must subtract off the VLAN | |
2167 | * header's checksum before csum can be used | |
2168 | */ | |
2169 | csum = csum_sub(csum, csum_partial(va + ETH_HLEN, | |
2170 | VLAN_HLEN, 0)); | |
2171 | } else { | |
2172 | return -1; | |
2173 | } | |
2174 | } | |
2175 | *hdr_flags = LRO_IPV4; | |
2176 | ||
2177 | iph = (struct iphdr *)(va + ll_hlen); | |
2178 | *ip_hdr = iph; | |
2179 | if (iph->protocol != IPPROTO_TCP) | |
2180 | return -1; | |
2181 | *hdr_flags |= LRO_TCP; | |
2182 | *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2); | |
2183 | ||
2184 | /* verify the IP checksum */ | |
2185 | if (unlikely(ip_fast_csum((u8 *) iph, iph->ihl))) | |
2186 | return -1; | |
2187 | ||
2188 | /* verify the checksum */ | |
2189 | if (unlikely(csum_tcpudp_magic(iph->saddr, iph->daddr, | |
2190 | ntohs(iph->tot_len) - (iph->ihl << 2), | |
2191 | IPPROTO_TCP, csum))) | |
2192 | return -1; | |
2193 | ||
2194 | return 0; | |
2195 | } | |
2196 | ||
77929732 BG |
2197 | static int myri10ge_get_txrx(struct myri10ge_priv *mgp, int slice) |
2198 | { | |
2199 | struct myri10ge_cmd cmd; | |
2200 | struct myri10ge_slice_state *ss; | |
2201 | int status; | |
2202 | ||
2203 | ss = &mgp->ss[slice]; | |
2204 | cmd.data0 = 0; /* single slice for now */ | |
2205 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_OFFSET, &cmd, 0); | |
2206 | ss->tx.lanai = (struct mcp_kreq_ether_send __iomem *) | |
2207 | (mgp->sram + cmd.data0); | |
2208 | ||
2209 | cmd.data0 = slice; | |
2210 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SMALL_RX_OFFSET, | |
2211 | &cmd, 0); | |
2212 | ss->rx_small.lanai = (struct mcp_kreq_ether_recv __iomem *) | |
2213 | (mgp->sram + cmd.data0); | |
2214 | ||
2215 | cmd.data0 = slice; | |
2216 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_BIG_RX_OFFSET, &cmd, 0); | |
2217 | ss->rx_big.lanai = (struct mcp_kreq_ether_recv __iomem *) | |
2218 | (mgp->sram + cmd.data0); | |
2219 | ||
77929732 BG |
2220 | return status; |
2221 | ||
2222 | } | |
2223 | ||
2224 | static int myri10ge_set_stats(struct myri10ge_priv *mgp, int slice) | |
2225 | { | |
2226 | struct myri10ge_cmd cmd; | |
2227 | struct myri10ge_slice_state *ss; | |
2228 | int status; | |
2229 | ||
2230 | ss = &mgp->ss[slice]; | |
2231 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(ss->fw_stats_bus); | |
2232 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(ss->fw_stats_bus); | |
2233 | cmd.data2 = sizeof(struct mcp_irq_data); | |
2234 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_STATS_DMA_V2, &cmd, 0); | |
2235 | if (status == -ENOSYS) { | |
2236 | dma_addr_t bus = ss->fw_stats_bus; | |
2237 | if (slice != 0) | |
2238 | return -EINVAL; | |
2239 | bus += offsetof(struct mcp_irq_data, send_done_count); | |
2240 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(bus); | |
2241 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(bus); | |
2242 | status = myri10ge_send_cmd(mgp, | |
2243 | MXGEFW_CMD_SET_STATS_DMA_OBSOLETE, | |
2244 | &cmd, 0); | |
2245 | /* Firmware cannot support multicast without STATS_DMA_V2 */ | |
2246 | mgp->fw_multicast_support = 0; | |
2247 | } else { | |
2248 | mgp->fw_multicast_support = 1; | |
2249 | } | |
2250 | return 0; | |
2251 | } | |
77929732 | 2252 | |
0da34b6d BG |
2253 | static int myri10ge_open(struct net_device *dev) |
2254 | { | |
0dcffac1 | 2255 | struct myri10ge_slice_state *ss; |
b53bef84 | 2256 | struct myri10ge_priv *mgp = netdev_priv(dev); |
0da34b6d | 2257 | struct myri10ge_cmd cmd; |
0dcffac1 BG |
2258 | int i, status, big_pow2, slice; |
2259 | u8 *itable; | |
1e6e9342 | 2260 | struct net_lro_mgr *lro_mgr; |
0da34b6d | 2261 | |
0da34b6d BG |
2262 | if (mgp->running != MYRI10GE_ETH_STOPPED) |
2263 | return -EBUSY; | |
2264 | ||
2265 | mgp->running = MYRI10GE_ETH_STARTING; | |
2266 | status = myri10ge_reset(mgp); | |
2267 | if (status != 0) { | |
2268 | printk(KERN_ERR "myri10ge: %s: failed reset\n", dev->name); | |
df30a740 | 2269 | goto abort_with_nothing; |
0da34b6d BG |
2270 | } |
2271 | ||
0dcffac1 BG |
2272 | if (mgp->num_slices > 1) { |
2273 | cmd.data0 = mgp->num_slices; | |
2274 | cmd.data1 = 1; /* use MSI-X */ | |
2275 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ENABLE_RSS_QUEUES, | |
2276 | &cmd, 0); | |
2277 | if (status != 0) { | |
2278 | printk(KERN_ERR | |
2279 | "myri10ge: %s: failed to set number of slices\n", | |
2280 | dev->name); | |
2281 | goto abort_with_nothing; | |
2282 | } | |
2283 | /* setup the indirection table */ | |
2284 | cmd.data0 = mgp->num_slices; | |
2285 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_RSS_TABLE_SIZE, | |
2286 | &cmd, 0); | |
2287 | ||
2288 | status |= myri10ge_send_cmd(mgp, | |
2289 | MXGEFW_CMD_GET_RSS_TABLE_OFFSET, | |
2290 | &cmd, 0); | |
2291 | if (status != 0) { | |
2292 | printk(KERN_ERR | |
2293 | "myri10ge: %s: failed to setup rss tables\n", | |
2294 | dev->name); | |
2295 | } | |
2296 | ||
2297 | /* just enable an identity mapping */ | |
2298 | itable = mgp->sram + cmd.data0; | |
2299 | for (i = 0; i < mgp->num_slices; i++) | |
2300 | __raw_writeb(i, &itable[i]); | |
2301 | ||
2302 | cmd.data0 = 1; | |
2303 | cmd.data1 = myri10ge_rss_hash; | |
2304 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_RSS_ENABLE, | |
2305 | &cmd, 0); | |
2306 | if (status != 0) { | |
2307 | printk(KERN_ERR | |
2308 | "myri10ge: %s: failed to enable slices\n", | |
2309 | dev->name); | |
2310 | goto abort_with_nothing; | |
2311 | } | |
2312 | } | |
2313 | ||
df30a740 BG |
2314 | status = myri10ge_request_irq(mgp); |
2315 | if (status != 0) | |
2316 | goto abort_with_nothing; | |
2317 | ||
0da34b6d BG |
2318 | /* decide what small buffer size to use. For good TCP rx |
2319 | * performance, it is important to not receive 1514 byte | |
2320 | * frames into jumbo buffers, as it confuses the socket buffer | |
2321 | * accounting code, leading to drops and erratic performance. | |
2322 | */ | |
2323 | ||
2324 | if (dev->mtu <= ETH_DATA_LEN) | |
c7dab99b BG |
2325 | /* enough for a TCP header */ |
2326 | mgp->small_bytes = (128 > SMP_CACHE_BYTES) | |
2327 | ? (128 - MXGEFW_PAD) | |
2328 | : (SMP_CACHE_BYTES - MXGEFW_PAD); | |
0da34b6d | 2329 | else |
de3c4507 BG |
2330 | /* enough for a vlan encapsulated ETH_DATA_LEN frame */ |
2331 | mgp->small_bytes = VLAN_ETH_FRAME_LEN; | |
0da34b6d BG |
2332 | |
2333 | /* Override the small buffer size? */ | |
2334 | if (myri10ge_small_bytes > 0) | |
2335 | mgp->small_bytes = myri10ge_small_bytes; | |
2336 | ||
0da34b6d BG |
2337 | /* Firmware needs the big buff size as a power of 2. Lie and |
2338 | * tell him the buffer is larger, because we only use 1 | |
2339 | * buffer/pkt, and the mtu will prevent overruns. | |
2340 | */ | |
13348bee | 2341 | big_pow2 = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD; |
c7dab99b | 2342 | if (big_pow2 < MYRI10GE_ALLOC_SIZE / 2) { |
199126a2 | 2343 | while (!is_power_of_2(big_pow2)) |
c7dab99b | 2344 | big_pow2++; |
13348bee | 2345 | mgp->big_bytes = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD; |
c7dab99b BG |
2346 | } else { |
2347 | big_pow2 = MYRI10GE_ALLOC_SIZE; | |
2348 | mgp->big_bytes = big_pow2; | |
2349 | } | |
2350 | ||
0dcffac1 BG |
2351 | /* setup the per-slice data structures */ |
2352 | for (slice = 0; slice < mgp->num_slices; slice++) { | |
2353 | ss = &mgp->ss[slice]; | |
2354 | ||
2355 | status = myri10ge_get_txrx(mgp, slice); | |
2356 | if (status != 0) { | |
2357 | printk(KERN_ERR | |
2358 | "myri10ge: %s: failed to get ring sizes or locations\n", | |
2359 | dev->name); | |
2360 | goto abort_with_rings; | |
2361 | } | |
2362 | status = myri10ge_allocate_rings(ss); | |
2363 | if (status != 0) | |
2364 | goto abort_with_rings; | |
2365 | if (slice == 0) | |
2366 | status = myri10ge_set_stats(mgp, slice); | |
2367 | if (status) { | |
2368 | printk(KERN_ERR | |
2369 | "myri10ge: %s: Couldn't set stats DMA\n", | |
2370 | dev->name); | |
2371 | goto abort_with_rings; | |
2372 | } | |
2373 | ||
2374 | lro_mgr = &ss->rx_done.lro_mgr; | |
2375 | lro_mgr->dev = dev; | |
2376 | lro_mgr->features = LRO_F_NAPI; | |
2377 | lro_mgr->ip_summed = CHECKSUM_COMPLETE; | |
2378 | lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY; | |
2379 | lro_mgr->max_desc = MYRI10GE_MAX_LRO_DESCRIPTORS; | |
2380 | lro_mgr->lro_arr = ss->rx_done.lro_desc; | |
2381 | lro_mgr->get_frag_header = myri10ge_get_frag_header; | |
2382 | lro_mgr->max_aggr = myri10ge_lro_max_pkts; | |
2383 | if (lro_mgr->max_aggr > MAX_SKB_FRAGS) | |
2384 | lro_mgr->max_aggr = MAX_SKB_FRAGS; | |
2385 | ||
2386 | /* must happen prior to any irq */ | |
2387 | napi_enable(&(ss)->napi); | |
2388 | } | |
0da34b6d BG |
2389 | |
2390 | /* now give firmware buffers sizes, and MTU */ | |
2391 | cmd.data0 = dev->mtu + ETH_HLEN + VLAN_HLEN; | |
2392 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_MTU, &cmd, 0); | |
2393 | cmd.data0 = mgp->small_bytes; | |
2394 | status |= | |
2395 | myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_SMALL_BUFFER_SIZE, &cmd, 0); | |
2396 | cmd.data0 = big_pow2; | |
2397 | status |= | |
2398 | myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_BIG_BUFFER_SIZE, &cmd, 0); | |
2399 | if (status) { | |
2400 | printk(KERN_ERR "myri10ge: %s: Couldn't set buffer sizes\n", | |
2401 | dev->name); | |
2402 | goto abort_with_rings; | |
2403 | } | |
2404 | ||
0dcffac1 BG |
2405 | /* |
2406 | * Set Linux style TSO mode; this is needed only on newer | |
2407 | * firmware versions. Older versions default to Linux | |
2408 | * style TSO | |
2409 | */ | |
2410 | cmd.data0 = 0; | |
2411 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_TSO_MODE, &cmd, 0); | |
2412 | if (status && status != -ENOSYS) { | |
2413 | printk(KERN_ERR "myri10ge: %s: Couldn't set TSO mode\n", | |
0da34b6d BG |
2414 | dev->name); |
2415 | goto abort_with_rings; | |
2416 | } | |
2417 | ||
66341fff | 2418 | mgp->link_state = ~0U; |
0da34b6d BG |
2419 | mgp->rdma_tags_available = 15; |
2420 | ||
0da34b6d BG |
2421 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_UP, &cmd, 0); |
2422 | if (status) { | |
2423 | printk(KERN_ERR "myri10ge: %s: Couldn't bring up link\n", | |
2424 | dev->name); | |
2425 | goto abort_with_rings; | |
2426 | } | |
2427 | ||
0da34b6d BG |
2428 | mgp->running = MYRI10GE_ETH_RUNNING; |
2429 | mgp->watchdog_timer.expires = jiffies + myri10ge_watchdog_timeout * HZ; | |
2430 | add_timer(&mgp->watchdog_timer); | |
2431 | netif_wake_queue(dev); | |
2432 | return 0; | |
2433 | ||
2434 | abort_with_rings: | |
0dcffac1 BG |
2435 | for (i = 0; i < mgp->num_slices; i++) |
2436 | myri10ge_free_rings(&mgp->ss[i]); | |
0da34b6d | 2437 | |
df30a740 BG |
2438 | myri10ge_free_irq(mgp); |
2439 | ||
0da34b6d BG |
2440 | abort_with_nothing: |
2441 | mgp->running = MYRI10GE_ETH_STOPPED; | |
2442 | return -ENOMEM; | |
2443 | } | |
2444 | ||
2445 | static int myri10ge_close(struct net_device *dev) | |
2446 | { | |
b53bef84 | 2447 | struct myri10ge_priv *mgp = netdev_priv(dev); |
0da34b6d BG |
2448 | struct myri10ge_cmd cmd; |
2449 | int status, old_down_cnt; | |
0dcffac1 | 2450 | int i; |
0da34b6d | 2451 | |
0da34b6d BG |
2452 | if (mgp->running != MYRI10GE_ETH_RUNNING) |
2453 | return 0; | |
2454 | ||
0dcffac1 | 2455 | if (mgp->ss[0].tx.req_bytes == NULL) |
0da34b6d BG |
2456 | return 0; |
2457 | ||
2458 | del_timer_sync(&mgp->watchdog_timer); | |
2459 | mgp->running = MYRI10GE_ETH_STOPPING; | |
0dcffac1 BG |
2460 | for (i = 0; i < mgp->num_slices; i++) { |
2461 | napi_disable(&mgp->ss[i].napi); | |
2462 | } | |
0da34b6d BG |
2463 | netif_carrier_off(dev); |
2464 | netif_stop_queue(dev); | |
2465 | old_down_cnt = mgp->down_cnt; | |
2466 | mb(); | |
2467 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_DOWN, &cmd, 0); | |
2468 | if (status) | |
2469 | printk(KERN_ERR "myri10ge: %s: Couldn't bring down link\n", | |
2470 | dev->name); | |
2471 | ||
2472 | wait_event_timeout(mgp->down_wq, old_down_cnt != mgp->down_cnt, HZ); | |
2473 | if (old_down_cnt == mgp->down_cnt) | |
2474 | printk(KERN_ERR "myri10ge: %s never got down irq\n", dev->name); | |
2475 | ||
2476 | netif_tx_disable(dev); | |
df30a740 | 2477 | myri10ge_free_irq(mgp); |
0dcffac1 BG |
2478 | for (i = 0; i < mgp->num_slices; i++) |
2479 | myri10ge_free_rings(&mgp->ss[i]); | |
0da34b6d BG |
2480 | |
2481 | mgp->running = MYRI10GE_ETH_STOPPED; | |
2482 | return 0; | |
2483 | } | |
2484 | ||
2485 | /* copy an array of struct mcp_kreq_ether_send's to the mcp. Copy | |
2486 | * backwards one at a time and handle ring wraps */ | |
2487 | ||
2488 | static inline void | |
2489 | myri10ge_submit_req_backwards(struct myri10ge_tx_buf *tx, | |
2490 | struct mcp_kreq_ether_send *src, int cnt) | |
2491 | { | |
2492 | int idx, starting_slot; | |
2493 | starting_slot = tx->req; | |
2494 | while (cnt > 1) { | |
2495 | cnt--; | |
2496 | idx = (starting_slot + cnt) & tx->mask; | |
2497 | myri10ge_pio_copy(&tx->lanai[idx], &src[cnt], sizeof(*src)); | |
2498 | mb(); | |
2499 | } | |
2500 | } | |
2501 | ||
2502 | /* | |
2503 | * copy an array of struct mcp_kreq_ether_send's to the mcp. Copy | |
2504 | * at most 32 bytes at a time, so as to avoid involving the software | |
2505 | * pio handler in the nic. We re-write the first segment's flags | |
2506 | * to mark them valid only after writing the entire chain. | |
2507 | */ | |
2508 | ||
2509 | static inline void | |
2510 | myri10ge_submit_req(struct myri10ge_tx_buf *tx, struct mcp_kreq_ether_send *src, | |
2511 | int cnt) | |
2512 | { | |
2513 | int idx, i; | |
2514 | struct mcp_kreq_ether_send __iomem *dstp, *dst; | |
2515 | struct mcp_kreq_ether_send *srcp; | |
2516 | u8 last_flags; | |
2517 | ||
2518 | idx = tx->req & tx->mask; | |
2519 | ||
2520 | last_flags = src->flags; | |
2521 | src->flags = 0; | |
2522 | mb(); | |
2523 | dst = dstp = &tx->lanai[idx]; | |
2524 | srcp = src; | |
2525 | ||
2526 | if ((idx + cnt) < tx->mask) { | |
2527 | for (i = 0; i < (cnt - 1); i += 2) { | |
2528 | myri10ge_pio_copy(dstp, srcp, 2 * sizeof(*src)); | |
2529 | mb(); /* force write every 32 bytes */ | |
2530 | srcp += 2; | |
2531 | dstp += 2; | |
2532 | } | |
2533 | } else { | |
2534 | /* submit all but the first request, and ensure | |
2535 | * that it is submitted below */ | |
2536 | myri10ge_submit_req_backwards(tx, src, cnt); | |
2537 | i = 0; | |
2538 | } | |
2539 | if (i < cnt) { | |
2540 | /* submit the first request */ | |
2541 | myri10ge_pio_copy(dstp, srcp, sizeof(*src)); | |
2542 | mb(); /* barrier before setting valid flag */ | |
2543 | } | |
2544 | ||
2545 | /* re-write the last 32-bits with the valid flags */ | |
2546 | src->flags = last_flags; | |
40f6cff5 | 2547 | put_be32(*((__be32 *) src + 3), (__be32 __iomem *) dst + 3); |
0da34b6d BG |
2548 | tx->req += cnt; |
2549 | mb(); | |
2550 | } | |
2551 | ||
0da34b6d BG |
2552 | /* |
2553 | * Transmit a packet. We need to split the packet so that a single | |
b53bef84 | 2554 | * segment does not cross myri10ge->tx_boundary, so this makes segment |
0da34b6d BG |
2555 | * counting tricky. So rather than try to count segments up front, we |
2556 | * just give up if there are too few segments to hold a reasonably | |
2557 | * fragmented packet currently available. If we run | |
2558 | * out of segments while preparing a packet for DMA, we just linearize | |
2559 | * it and try again. | |
2560 | */ | |
2561 | ||
2562 | static int myri10ge_xmit(struct sk_buff *skb, struct net_device *dev) | |
2563 | { | |
2564 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
b53bef84 | 2565 | struct myri10ge_slice_state *ss; |
0da34b6d | 2566 | struct mcp_kreq_ether_send *req; |
b53bef84 | 2567 | struct myri10ge_tx_buf *tx; |
0da34b6d BG |
2568 | struct skb_frag_struct *frag; |
2569 | dma_addr_t bus; | |
40f6cff5 AV |
2570 | u32 low; |
2571 | __be32 high_swapped; | |
0da34b6d BG |
2572 | unsigned int len; |
2573 | int idx, last_idx, avail, frag_cnt, frag_idx, count, mss, max_segments; | |
2574 | u16 pseudo_hdr_offset, cksum_offset; | |
2575 | int cum_len, seglen, boundary, rdma_count; | |
2576 | u8 flags, odd_flag; | |
2577 | ||
b53bef84 | 2578 | /* always transmit through slot 0 */ |
0dcffac1 | 2579 | ss = mgp->ss; |
b53bef84 | 2580 | tx = &ss->tx; |
0da34b6d BG |
2581 | again: |
2582 | req = tx->req_list; | |
2583 | avail = tx->mask - 1 - (tx->req - tx->done); | |
2584 | ||
2585 | mss = 0; | |
2586 | max_segments = MXGEFW_MAX_SEND_DESC; | |
2587 | ||
917690cd | 2588 | if (skb_is_gso(skb)) { |
7967168c | 2589 | mss = skb_shinfo(skb)->gso_size; |
917690cd | 2590 | max_segments = MYRI10GE_MAX_SEND_DESC_TSO; |
0da34b6d | 2591 | } |
0da34b6d BG |
2592 | |
2593 | if ((unlikely(avail < max_segments))) { | |
2594 | /* we are out of transmit resources */ | |
b53bef84 | 2595 | tx->stop_queue++; |
0da34b6d BG |
2596 | netif_stop_queue(dev); |
2597 | return 1; | |
2598 | } | |
2599 | ||
2600 | /* Setup checksum offloading, if needed */ | |
2601 | cksum_offset = 0; | |
2602 | pseudo_hdr_offset = 0; | |
2603 | odd_flag = 0; | |
2604 | flags = (MXGEFW_FLAGS_NO_TSO | MXGEFW_FLAGS_FIRST); | |
84fa7933 | 2605 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
ea2ae17d | 2606 | cksum_offset = skb_transport_offset(skb); |
ff1dcadb | 2607 | pseudo_hdr_offset = cksum_offset + skb->csum_offset; |
0da34b6d BG |
2608 | /* If the headers are excessively large, then we must |
2609 | * fall back to a software checksum */ | |
4f93fde0 BG |
2610 | if (unlikely(!mss && (cksum_offset > 255 || |
2611 | pseudo_hdr_offset > 127))) { | |
84fa7933 | 2612 | if (skb_checksum_help(skb)) |
0da34b6d BG |
2613 | goto drop; |
2614 | cksum_offset = 0; | |
2615 | pseudo_hdr_offset = 0; | |
2616 | } else { | |
0da34b6d BG |
2617 | odd_flag = MXGEFW_FLAGS_ALIGN_ODD; |
2618 | flags |= MXGEFW_FLAGS_CKSUM; | |
2619 | } | |
2620 | } | |
2621 | ||
2622 | cum_len = 0; | |
2623 | ||
0da34b6d BG |
2624 | if (mss) { /* TSO */ |
2625 | /* this removes any CKSUM flag from before */ | |
2626 | flags = (MXGEFW_FLAGS_TSO_HDR | MXGEFW_FLAGS_FIRST); | |
2627 | ||
2628 | /* negative cum_len signifies to the | |
2629 | * send loop that we are still in the | |
2630 | * header portion of the TSO packet. | |
4f93fde0 | 2631 | * TSO header can be at most 1KB long */ |
ab6a5bb6 | 2632 | cum_len = -(skb_transport_offset(skb) + tcp_hdrlen(skb)); |
0da34b6d | 2633 | |
4f93fde0 BG |
2634 | /* for IPv6 TSO, the checksum offset stores the |
2635 | * TCP header length, to save the firmware from | |
2636 | * the need to parse the headers */ | |
2637 | if (skb_is_gso_v6(skb)) { | |
2638 | cksum_offset = tcp_hdrlen(skb); | |
2639 | /* Can only handle headers <= max_tso6 long */ | |
2640 | if (unlikely(-cum_len > mgp->max_tso6)) | |
2641 | return myri10ge_sw_tso(skb, dev); | |
2642 | } | |
0da34b6d BG |
2643 | /* for TSO, pseudo_hdr_offset holds mss. |
2644 | * The firmware figures out where to put | |
2645 | * the checksum by parsing the header. */ | |
40f6cff5 | 2646 | pseudo_hdr_offset = mss; |
0da34b6d | 2647 | } else |
0da34b6d BG |
2648 | /* Mark small packets, and pad out tiny packets */ |
2649 | if (skb->len <= MXGEFW_SEND_SMALL_SIZE) { | |
2650 | flags |= MXGEFW_FLAGS_SMALL; | |
2651 | ||
2652 | /* pad frames to at least ETH_ZLEN bytes */ | |
2653 | if (unlikely(skb->len < ETH_ZLEN)) { | |
5b057c6b | 2654 | if (skb_padto(skb, ETH_ZLEN)) { |
0da34b6d BG |
2655 | /* The packet is gone, so we must |
2656 | * return 0 */ | |
b53bef84 | 2657 | ss->stats.tx_dropped += 1; |
0da34b6d BG |
2658 | return 0; |
2659 | } | |
2660 | /* adjust the len to account for the zero pad | |
2661 | * so that the nic can know how long it is */ | |
2662 | skb->len = ETH_ZLEN; | |
2663 | } | |
2664 | } | |
2665 | ||
2666 | /* map the skb for DMA */ | |
2667 | len = skb->len - skb->data_len; | |
2668 | idx = tx->req & tx->mask; | |
2669 | tx->info[idx].skb = skb; | |
2670 | bus = pci_map_single(mgp->pdev, skb->data, len, PCI_DMA_TODEVICE); | |
2671 | pci_unmap_addr_set(&tx->info[idx], bus, bus); | |
2672 | pci_unmap_len_set(&tx->info[idx], len, len); | |
2673 | ||
2674 | frag_cnt = skb_shinfo(skb)->nr_frags; | |
2675 | frag_idx = 0; | |
2676 | count = 0; | |
2677 | rdma_count = 0; | |
2678 | ||
2679 | /* "rdma_count" is the number of RDMAs belonging to the | |
2680 | * current packet BEFORE the current send request. For | |
2681 | * non-TSO packets, this is equal to "count". | |
2682 | * For TSO packets, rdma_count needs to be reset | |
2683 | * to 0 after a segment cut. | |
2684 | * | |
2685 | * The rdma_count field of the send request is | |
2686 | * the number of RDMAs of the packet starting at | |
2687 | * that request. For TSO send requests with one ore more cuts | |
2688 | * in the middle, this is the number of RDMAs starting | |
2689 | * after the last cut in the request. All previous | |
2690 | * segments before the last cut implicitly have 1 RDMA. | |
2691 | * | |
2692 | * Since the number of RDMAs is not known beforehand, | |
2693 | * it must be filled-in retroactively - after each | |
2694 | * segmentation cut or at the end of the entire packet. | |
2695 | */ | |
2696 | ||
2697 | while (1) { | |
2698 | /* Break the SKB or Fragment up into pieces which | |
b53bef84 | 2699 | * do not cross mgp->tx_boundary */ |
0da34b6d BG |
2700 | low = MYRI10GE_LOWPART_TO_U32(bus); |
2701 | high_swapped = htonl(MYRI10GE_HIGHPART_TO_U32(bus)); | |
2702 | while (len) { | |
2703 | u8 flags_next; | |
2704 | int cum_len_next; | |
2705 | ||
2706 | if (unlikely(count == max_segments)) | |
2707 | goto abort_linearize; | |
2708 | ||
b53bef84 BG |
2709 | boundary = |
2710 | (low + mgp->tx_boundary) & ~(mgp->tx_boundary - 1); | |
0da34b6d BG |
2711 | seglen = boundary - low; |
2712 | if (seglen > len) | |
2713 | seglen = len; | |
2714 | flags_next = flags & ~MXGEFW_FLAGS_FIRST; | |
2715 | cum_len_next = cum_len + seglen; | |
0da34b6d BG |
2716 | if (mss) { /* TSO */ |
2717 | (req - rdma_count)->rdma_count = rdma_count + 1; | |
2718 | ||
2719 | if (likely(cum_len >= 0)) { /* payload */ | |
2720 | int next_is_first, chop; | |
2721 | ||
2722 | chop = (cum_len_next > mss); | |
2723 | cum_len_next = cum_len_next % mss; | |
2724 | next_is_first = (cum_len_next == 0); | |
2725 | flags |= chop * MXGEFW_FLAGS_TSO_CHOP; | |
2726 | flags_next |= next_is_first * | |
2727 | MXGEFW_FLAGS_FIRST; | |
2728 | rdma_count |= -(chop | next_is_first); | |
2729 | rdma_count += chop & !next_is_first; | |
2730 | } else if (likely(cum_len_next >= 0)) { /* header ends */ | |
2731 | int small; | |
2732 | ||
2733 | rdma_count = -1; | |
2734 | cum_len_next = 0; | |
2735 | seglen = -cum_len; | |
2736 | small = (mss <= MXGEFW_SEND_SMALL_SIZE); | |
2737 | flags_next = MXGEFW_FLAGS_TSO_PLD | | |
2738 | MXGEFW_FLAGS_FIRST | | |
2739 | (small * MXGEFW_FLAGS_SMALL); | |
2740 | } | |
2741 | } | |
0da34b6d BG |
2742 | req->addr_high = high_swapped; |
2743 | req->addr_low = htonl(low); | |
40f6cff5 | 2744 | req->pseudo_hdr_offset = htons(pseudo_hdr_offset); |
0da34b6d BG |
2745 | req->pad = 0; /* complete solid 16-byte block; does this matter? */ |
2746 | req->rdma_count = 1; | |
2747 | req->length = htons(seglen); | |
2748 | req->cksum_offset = cksum_offset; | |
2749 | req->flags = flags | ((cum_len & 1) * odd_flag); | |
2750 | ||
2751 | low += seglen; | |
2752 | len -= seglen; | |
2753 | cum_len = cum_len_next; | |
2754 | flags = flags_next; | |
2755 | req++; | |
2756 | count++; | |
2757 | rdma_count++; | |
4f93fde0 BG |
2758 | if (cksum_offset != 0 && !(mss && skb_is_gso_v6(skb))) { |
2759 | if (unlikely(cksum_offset > seglen)) | |
2760 | cksum_offset -= seglen; | |
2761 | else | |
2762 | cksum_offset = 0; | |
2763 | } | |
0da34b6d BG |
2764 | } |
2765 | if (frag_idx == frag_cnt) | |
2766 | break; | |
2767 | ||
2768 | /* map next fragment for DMA */ | |
2769 | idx = (count + tx->req) & tx->mask; | |
2770 | frag = &skb_shinfo(skb)->frags[frag_idx]; | |
2771 | frag_idx++; | |
2772 | len = frag->size; | |
2773 | bus = pci_map_page(mgp->pdev, frag->page, frag->page_offset, | |
2774 | len, PCI_DMA_TODEVICE); | |
2775 | pci_unmap_addr_set(&tx->info[idx], bus, bus); | |
2776 | pci_unmap_len_set(&tx->info[idx], len, len); | |
2777 | } | |
2778 | ||
2779 | (req - rdma_count)->rdma_count = rdma_count; | |
0da34b6d BG |
2780 | if (mss) |
2781 | do { | |
2782 | req--; | |
2783 | req->flags |= MXGEFW_FLAGS_TSO_LAST; | |
2784 | } while (!(req->flags & (MXGEFW_FLAGS_TSO_CHOP | | |
2785 | MXGEFW_FLAGS_FIRST))); | |
0da34b6d BG |
2786 | idx = ((count - 1) + tx->req) & tx->mask; |
2787 | tx->info[idx].last = 1; | |
e454e7e2 | 2788 | myri10ge_submit_req(tx, tx->req_list, count); |
0da34b6d BG |
2789 | tx->pkt_start++; |
2790 | if ((avail - count) < MXGEFW_MAX_SEND_DESC) { | |
b53bef84 | 2791 | tx->stop_queue++; |
0da34b6d BG |
2792 | netif_stop_queue(dev); |
2793 | } | |
2794 | dev->trans_start = jiffies; | |
2795 | return 0; | |
2796 | ||
2797 | abort_linearize: | |
2798 | /* Free any DMA resources we've alloced and clear out the skb | |
2799 | * slot so as to not trip up assertions, and to avoid a | |
2800 | * double-free if linearizing fails */ | |
2801 | ||
2802 | last_idx = (idx + 1) & tx->mask; | |
2803 | idx = tx->req & tx->mask; | |
2804 | tx->info[idx].skb = NULL; | |
2805 | do { | |
2806 | len = pci_unmap_len(&tx->info[idx], len); | |
2807 | if (len) { | |
2808 | if (tx->info[idx].skb != NULL) | |
2809 | pci_unmap_single(mgp->pdev, | |
2810 | pci_unmap_addr(&tx->info[idx], | |
2811 | bus), len, | |
2812 | PCI_DMA_TODEVICE); | |
2813 | else | |
2814 | pci_unmap_page(mgp->pdev, | |
2815 | pci_unmap_addr(&tx->info[idx], | |
2816 | bus), len, | |
2817 | PCI_DMA_TODEVICE); | |
2818 | pci_unmap_len_set(&tx->info[idx], len, 0); | |
2819 | tx->info[idx].skb = NULL; | |
2820 | } | |
2821 | idx = (idx + 1) & tx->mask; | |
2822 | } while (idx != last_idx); | |
89114afd | 2823 | if (skb_is_gso(skb)) { |
0da34b6d BG |
2824 | printk(KERN_ERR |
2825 | "myri10ge: %s: TSO but wanted to linearize?!?!?\n", | |
2826 | mgp->dev->name); | |
2827 | goto drop; | |
2828 | } | |
2829 | ||
bec0e859 | 2830 | if (skb_linearize(skb)) |
0da34b6d BG |
2831 | goto drop; |
2832 | ||
b53bef84 | 2833 | tx->linearized++; |
0da34b6d BG |
2834 | goto again; |
2835 | ||
2836 | drop: | |
2837 | dev_kfree_skb_any(skb); | |
b53bef84 | 2838 | ss->stats.tx_dropped += 1; |
0da34b6d BG |
2839 | return 0; |
2840 | ||
2841 | } | |
2842 | ||
4f93fde0 BG |
2843 | static int myri10ge_sw_tso(struct sk_buff *skb, struct net_device *dev) |
2844 | { | |
2845 | struct sk_buff *segs, *curr; | |
b53bef84 | 2846 | struct myri10ge_priv *mgp = netdev_priv(dev); |
4f93fde0 BG |
2847 | int status; |
2848 | ||
2849 | segs = skb_gso_segment(skb, dev->features & ~NETIF_F_TSO6); | |
801678c5 | 2850 | if (IS_ERR(segs)) |
4f93fde0 BG |
2851 | goto drop; |
2852 | ||
2853 | while (segs) { | |
2854 | curr = segs; | |
2855 | segs = segs->next; | |
2856 | curr->next = NULL; | |
2857 | status = myri10ge_xmit(curr, dev); | |
2858 | if (status != 0) { | |
2859 | dev_kfree_skb_any(curr); | |
2860 | if (segs != NULL) { | |
2861 | curr = segs; | |
2862 | segs = segs->next; | |
2863 | curr->next = NULL; | |
2864 | dev_kfree_skb_any(segs); | |
2865 | } | |
2866 | goto drop; | |
2867 | } | |
2868 | } | |
2869 | dev_kfree_skb_any(skb); | |
2870 | return 0; | |
2871 | ||
2872 | drop: | |
2873 | dev_kfree_skb_any(skb); | |
2874 | mgp->stats.tx_dropped += 1; | |
2875 | return 0; | |
2876 | } | |
2877 | ||
0da34b6d BG |
2878 | static struct net_device_stats *myri10ge_get_stats(struct net_device *dev) |
2879 | { | |
2880 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
0dcffac1 BG |
2881 | struct myri10ge_slice_netstats *slice_stats; |
2882 | struct net_device_stats *stats = &mgp->stats; | |
2883 | int i; | |
2884 | ||
2885 | memset(stats, 0, sizeof(*stats)); | |
2886 | for (i = 0; i < mgp->num_slices; i++) { | |
2887 | slice_stats = &mgp->ss[i].stats; | |
2888 | stats->rx_packets += slice_stats->rx_packets; | |
2889 | stats->tx_packets += slice_stats->tx_packets; | |
2890 | stats->rx_bytes += slice_stats->rx_bytes; | |
2891 | stats->tx_bytes += slice_stats->tx_bytes; | |
2892 | stats->rx_dropped += slice_stats->rx_dropped; | |
2893 | stats->tx_dropped += slice_stats->tx_dropped; | |
2894 | } | |
2895 | return stats; | |
0da34b6d BG |
2896 | } |
2897 | ||
2898 | static void myri10ge_set_multicast_list(struct net_device *dev) | |
2899 | { | |
b53bef84 | 2900 | struct myri10ge_priv *mgp = netdev_priv(dev); |
85a7ea1b | 2901 | struct myri10ge_cmd cmd; |
85a7ea1b | 2902 | struct dev_mc_list *mc_list; |
6250223e | 2903 | __be32 data[2] = { 0, 0 }; |
85a7ea1b | 2904 | int err; |
0795af57 | 2905 | DECLARE_MAC_BUF(mac); |
85a7ea1b | 2906 | |
0da34b6d BG |
2907 | /* can be called from atomic contexts, |
2908 | * pass 1 to force atomicity in myri10ge_send_cmd() */ | |
85a7ea1b BG |
2909 | myri10ge_change_promisc(mgp, dev->flags & IFF_PROMISC, 1); |
2910 | ||
2911 | /* This firmware is known to not support multicast */ | |
2f76216f | 2912 | if (!mgp->fw_multicast_support) |
85a7ea1b BG |
2913 | return; |
2914 | ||
2915 | /* Disable multicast filtering */ | |
2916 | ||
2917 | err = myri10ge_send_cmd(mgp, MXGEFW_ENABLE_ALLMULTI, &cmd, 1); | |
2918 | if (err != 0) { | |
2919 | printk(KERN_ERR "myri10ge: %s: Failed MXGEFW_ENABLE_ALLMULTI," | |
2920 | " error status: %d\n", dev->name, err); | |
2921 | goto abort; | |
2922 | } | |
2923 | ||
2f76216f | 2924 | if ((dev->flags & IFF_ALLMULTI) || mgp->adopted_rx_filter_bug) { |
85a7ea1b BG |
2925 | /* request to disable multicast filtering, so quit here */ |
2926 | return; | |
2927 | } | |
2928 | ||
2929 | /* Flush the filters */ | |
2930 | ||
2931 | err = myri10ge_send_cmd(mgp, MXGEFW_LEAVE_ALL_MULTICAST_GROUPS, | |
2932 | &cmd, 1); | |
2933 | if (err != 0) { | |
2934 | printk(KERN_ERR | |
2935 | "myri10ge: %s: Failed MXGEFW_LEAVE_ALL_MULTICAST_GROUPS" | |
2936 | ", error status: %d\n", dev->name, err); | |
2937 | goto abort; | |
2938 | } | |
2939 | ||
2940 | /* Walk the multicast list, and add each address */ | |
2941 | for (mc_list = dev->mc_list; mc_list != NULL; mc_list = mc_list->next) { | |
40f6cff5 AV |
2942 | memcpy(data, &mc_list->dmi_addr, 6); |
2943 | cmd.data0 = ntohl(data[0]); | |
2944 | cmd.data1 = ntohl(data[1]); | |
85a7ea1b BG |
2945 | err = myri10ge_send_cmd(mgp, MXGEFW_JOIN_MULTICAST_GROUP, |
2946 | &cmd, 1); | |
2947 | ||
2948 | if (err != 0) { | |
2949 | printk(KERN_ERR "myri10ge: %s: Failed " | |
2950 | "MXGEFW_JOIN_MULTICAST_GROUP, error status:" | |
2951 | "%d\t", dev->name, err); | |
0795af57 JP |
2952 | printk(KERN_ERR "MAC %s\n", |
2953 | print_mac(mac, mc_list->dmi_addr)); | |
85a7ea1b BG |
2954 | goto abort; |
2955 | } | |
2956 | } | |
2957 | /* Enable multicast filtering */ | |
2958 | err = myri10ge_send_cmd(mgp, MXGEFW_DISABLE_ALLMULTI, &cmd, 1); | |
2959 | if (err != 0) { | |
2960 | printk(KERN_ERR "myri10ge: %s: Failed MXGEFW_DISABLE_ALLMULTI," | |
2961 | "error status: %d\n", dev->name, err); | |
2962 | goto abort; | |
2963 | } | |
2964 | ||
2965 | return; | |
2966 | ||
2967 | abort: | |
2968 | return; | |
0da34b6d BG |
2969 | } |
2970 | ||
2971 | static int myri10ge_set_mac_address(struct net_device *dev, void *addr) | |
2972 | { | |
2973 | struct sockaddr *sa = addr; | |
2974 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
2975 | int status; | |
2976 | ||
2977 | if (!is_valid_ether_addr(sa->sa_data)) | |
2978 | return -EADDRNOTAVAIL; | |
2979 | ||
2980 | status = myri10ge_update_mac_address(mgp, sa->sa_data); | |
2981 | if (status != 0) { | |
2982 | printk(KERN_ERR | |
2983 | "myri10ge: %s: changing mac address failed with %d\n", | |
2984 | dev->name, status); | |
2985 | return status; | |
2986 | } | |
2987 | ||
2988 | /* change the dev structure */ | |
2989 | memcpy(dev->dev_addr, sa->sa_data, 6); | |
2990 | return 0; | |
2991 | } | |
2992 | ||
2993 | static int myri10ge_change_mtu(struct net_device *dev, int new_mtu) | |
2994 | { | |
2995 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
2996 | int error = 0; | |
2997 | ||
2998 | if ((new_mtu < 68) || (ETH_HLEN + new_mtu > MYRI10GE_MAX_ETHER_MTU)) { | |
2999 | printk(KERN_ERR "myri10ge: %s: new mtu (%d) is not valid\n", | |
3000 | dev->name, new_mtu); | |
3001 | return -EINVAL; | |
3002 | } | |
3003 | printk(KERN_INFO "%s: changing mtu from %d to %d\n", | |
3004 | dev->name, dev->mtu, new_mtu); | |
3005 | if (mgp->running) { | |
3006 | /* if we change the mtu on an active device, we must | |
3007 | * reset the device so the firmware sees the change */ | |
3008 | myri10ge_close(dev); | |
3009 | dev->mtu = new_mtu; | |
3010 | myri10ge_open(dev); | |
3011 | } else | |
3012 | dev->mtu = new_mtu; | |
3013 | ||
3014 | return error; | |
3015 | } | |
3016 | ||
3017 | /* | |
3018 | * Enable ECRC to align PCI-E Completion packets on an 8-byte boundary. | |
3019 | * Only do it if the bridge is a root port since we don't want to disturb | |
3020 | * any other device, except if forced with myri10ge_ecrc_enable > 1. | |
3021 | */ | |
3022 | ||
0da34b6d BG |
3023 | static void myri10ge_enable_ecrc(struct myri10ge_priv *mgp) |
3024 | { | |
3025 | struct pci_dev *bridge = mgp->pdev->bus->self; | |
3026 | struct device *dev = &mgp->pdev->dev; | |
3027 | unsigned cap; | |
3028 | unsigned err_cap; | |
3029 | u16 val; | |
3030 | u8 ext_type; | |
3031 | int ret; | |
3032 | ||
3033 | if (!myri10ge_ecrc_enable || !bridge) | |
3034 | return; | |
3035 | ||
3036 | /* check that the bridge is a root port */ | |
3037 | cap = pci_find_capability(bridge, PCI_CAP_ID_EXP); | |
3038 | pci_read_config_word(bridge, cap + PCI_CAP_FLAGS, &val); | |
3039 | ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4; | |
3040 | if (ext_type != PCI_EXP_TYPE_ROOT_PORT) { | |
3041 | if (myri10ge_ecrc_enable > 1) { | |
eca3fd83 | 3042 | struct pci_dev *prev_bridge, *old_bridge = bridge; |
0da34b6d BG |
3043 | |
3044 | /* Walk the hierarchy up to the root port | |
3045 | * where ECRC has to be enabled */ | |
3046 | do { | |
eca3fd83 | 3047 | prev_bridge = bridge; |
0da34b6d | 3048 | bridge = bridge->bus->self; |
eca3fd83 | 3049 | if (!bridge || prev_bridge == bridge) { |
0da34b6d BG |
3050 | dev_err(dev, |
3051 | "Failed to find root port" | |
3052 | " to force ECRC\n"); | |
3053 | return; | |
3054 | } | |
3055 | cap = | |
3056 | pci_find_capability(bridge, PCI_CAP_ID_EXP); | |
3057 | pci_read_config_word(bridge, | |
3058 | cap + PCI_CAP_FLAGS, &val); | |
3059 | ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4; | |
3060 | } while (ext_type != PCI_EXP_TYPE_ROOT_PORT); | |
3061 | ||
3062 | dev_info(dev, | |
3063 | "Forcing ECRC on non-root port %s" | |
3064 | " (enabling on root port %s)\n", | |
3065 | pci_name(old_bridge), pci_name(bridge)); | |
3066 | } else { | |
3067 | dev_err(dev, | |
3068 | "Not enabling ECRC on non-root port %s\n", | |
3069 | pci_name(bridge)); | |
3070 | return; | |
3071 | } | |
3072 | } | |
3073 | ||
3074 | cap = pci_find_ext_capability(bridge, PCI_EXT_CAP_ID_ERR); | |
0da34b6d BG |
3075 | if (!cap) |
3076 | return; | |
3077 | ||
3078 | ret = pci_read_config_dword(bridge, cap + PCI_ERR_CAP, &err_cap); | |
3079 | if (ret) { | |
3080 | dev_err(dev, "failed reading ext-conf-space of %s\n", | |
3081 | pci_name(bridge)); | |
3082 | dev_err(dev, "\t pci=nommconf in use? " | |
3083 | "or buggy/incomplete/absent ACPI MCFG attr?\n"); | |
3084 | return; | |
3085 | } | |
3086 | if (!(err_cap & PCI_ERR_CAP_ECRC_GENC)) | |
3087 | return; | |
3088 | ||
3089 | err_cap |= PCI_ERR_CAP_ECRC_GENE; | |
3090 | pci_write_config_dword(bridge, cap + PCI_ERR_CAP, err_cap); | |
3091 | dev_info(dev, "Enabled ECRC on upstream bridge %s\n", pci_name(bridge)); | |
0da34b6d BG |
3092 | } |
3093 | ||
3094 | /* | |
3095 | * The Lanai Z8E PCI-E interface achieves higher Read-DMA throughput | |
3096 | * when the PCI-E Completion packets are aligned on an 8-byte | |
3097 | * boundary. Some PCI-E chip sets always align Completion packets; on | |
3098 | * the ones that do not, the alignment can be enforced by enabling | |
3099 | * ECRC generation (if supported). | |
3100 | * | |
3101 | * When PCI-E Completion packets are not aligned, it is actually more | |
3102 | * efficient to limit Read-DMA transactions to 2KB, rather than 4KB. | |
3103 | * | |
3104 | * If the driver can neither enable ECRC nor verify that it has | |
3105 | * already been enabled, then it must use a firmware image which works | |
0dcffac1 | 3106 | * around unaligned completion packets (myri10ge_rss_ethp_z8e.dat), and it |
0da34b6d | 3107 | * should also ensure that it never gives the device a Read-DMA which is |
b53bef84 | 3108 | * larger than 2KB by setting the tx_boundary to 2KB. If ECRC is |
0dcffac1 | 3109 | * enabled, then the driver should use the aligned (myri10ge_rss_eth_z8e.dat) |
b53bef84 | 3110 | * firmware image, and set tx_boundary to 4KB. |
0da34b6d BG |
3111 | */ |
3112 | ||
5443e9ea | 3113 | static void myri10ge_firmware_probe(struct myri10ge_priv *mgp) |
0da34b6d | 3114 | { |
5443e9ea BG |
3115 | struct pci_dev *pdev = mgp->pdev; |
3116 | struct device *dev = &pdev->dev; | |
302d242c | 3117 | int status; |
0da34b6d | 3118 | |
b53bef84 | 3119 | mgp->tx_boundary = 4096; |
5443e9ea BG |
3120 | /* |
3121 | * Verify the max read request size was set to 4KB | |
3122 | * before trying the test with 4KB. | |
3123 | */ | |
302d242c BG |
3124 | status = pcie_get_readrq(pdev); |
3125 | if (status < 0) { | |
5443e9ea BG |
3126 | dev_err(dev, "Couldn't read max read req size: %d\n", status); |
3127 | goto abort; | |
3128 | } | |
302d242c BG |
3129 | if (status != 4096) { |
3130 | dev_warn(dev, "Max Read Request size != 4096 (%d)\n", status); | |
b53bef84 | 3131 | mgp->tx_boundary = 2048; |
5443e9ea BG |
3132 | } |
3133 | /* | |
3134 | * load the optimized firmware (which assumes aligned PCIe | |
3135 | * completions) in order to see if it works on this host. | |
3136 | */ | |
3137 | mgp->fw_name = myri10ge_fw_aligned; | |
0dcffac1 | 3138 | status = myri10ge_load_firmware(mgp, 1); |
5443e9ea BG |
3139 | if (status != 0) { |
3140 | goto abort; | |
3141 | } | |
3142 | ||
3143 | /* | |
3144 | * Enable ECRC if possible | |
3145 | */ | |
3146 | myri10ge_enable_ecrc(mgp); | |
3147 | ||
3148 | /* | |
3149 | * Run a DMA test which watches for unaligned completions and | |
3150 | * aborts on the first one seen. | |
3151 | */ | |
3152 | ||
3153 | status = myri10ge_dma_test(mgp, MXGEFW_CMD_UNALIGNED_TEST); | |
3154 | if (status == 0) | |
3155 | return; /* keep the aligned firmware */ | |
3156 | ||
3157 | if (status != -E2BIG) | |
3158 | dev_warn(dev, "DMA test failed: %d\n", status); | |
3159 | if (status == -ENOSYS) | |
3160 | dev_warn(dev, "Falling back to ethp! " | |
3161 | "Please install up to date fw\n"); | |
3162 | abort: | |
3163 | /* fall back to using the unaligned firmware */ | |
b53bef84 | 3164 | mgp->tx_boundary = 2048; |
0da34b6d BG |
3165 | mgp->fw_name = myri10ge_fw_unaligned; |
3166 | ||
5443e9ea BG |
3167 | } |
3168 | ||
3169 | static void myri10ge_select_firmware(struct myri10ge_priv *mgp) | |
3170 | { | |
0da34b6d | 3171 | if (myri10ge_force_firmware == 0) { |
ce7f9368 BG |
3172 | int link_width, exp_cap; |
3173 | u16 lnk; | |
3174 | ||
3175 | exp_cap = pci_find_capability(mgp->pdev, PCI_CAP_ID_EXP); | |
3176 | pci_read_config_word(mgp->pdev, exp_cap + PCI_EXP_LNKSTA, &lnk); | |
3177 | link_width = (lnk >> 4) & 0x3f; | |
3178 | ||
ce7f9368 BG |
3179 | /* Check to see if Link is less than 8 or if the |
3180 | * upstream bridge is known to provide aligned | |
3181 | * completions */ | |
3182 | if (link_width < 8) { | |
3183 | dev_info(&mgp->pdev->dev, "PCIE x%d Link\n", | |
3184 | link_width); | |
b53bef84 | 3185 | mgp->tx_boundary = 4096; |
ce7f9368 | 3186 | mgp->fw_name = myri10ge_fw_aligned; |
5443e9ea BG |
3187 | } else { |
3188 | myri10ge_firmware_probe(mgp); | |
0da34b6d BG |
3189 | } |
3190 | } else { | |
3191 | if (myri10ge_force_firmware == 1) { | |
3192 | dev_info(&mgp->pdev->dev, | |
3193 | "Assuming aligned completions (forced)\n"); | |
b53bef84 | 3194 | mgp->tx_boundary = 4096; |
0da34b6d BG |
3195 | mgp->fw_name = myri10ge_fw_aligned; |
3196 | } else { | |
3197 | dev_info(&mgp->pdev->dev, | |
3198 | "Assuming unaligned completions (forced)\n"); | |
b53bef84 | 3199 | mgp->tx_boundary = 2048; |
0da34b6d BG |
3200 | mgp->fw_name = myri10ge_fw_unaligned; |
3201 | } | |
3202 | } | |
3203 | if (myri10ge_fw_name != NULL) { | |
3204 | dev_info(&mgp->pdev->dev, "overriding firmware to %s\n", | |
3205 | myri10ge_fw_name); | |
3206 | mgp->fw_name = myri10ge_fw_name; | |
3207 | } | |
3208 | } | |
3209 | ||
0da34b6d | 3210 | #ifdef CONFIG_PM |
0da34b6d BG |
3211 | static int myri10ge_suspend(struct pci_dev *pdev, pm_message_t state) |
3212 | { | |
3213 | struct myri10ge_priv *mgp; | |
3214 | struct net_device *netdev; | |
3215 | ||
3216 | mgp = pci_get_drvdata(pdev); | |
3217 | if (mgp == NULL) | |
3218 | return -EINVAL; | |
3219 | netdev = mgp->dev; | |
3220 | ||
3221 | netif_device_detach(netdev); | |
3222 | if (netif_running(netdev)) { | |
3223 | printk(KERN_INFO "myri10ge: closing %s\n", netdev->name); | |
3224 | rtnl_lock(); | |
3225 | myri10ge_close(netdev); | |
3226 | rtnl_unlock(); | |
3227 | } | |
3228 | myri10ge_dummy_rdma(mgp, 0); | |
83f6e152 | 3229 | pci_save_state(pdev); |
0da34b6d | 3230 | pci_disable_device(pdev); |
1a63e846 BG |
3231 | |
3232 | return pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
0da34b6d BG |
3233 | } |
3234 | ||
3235 | static int myri10ge_resume(struct pci_dev *pdev) | |
3236 | { | |
3237 | struct myri10ge_priv *mgp; | |
3238 | struct net_device *netdev; | |
3239 | int status; | |
3240 | u16 vendor; | |
3241 | ||
3242 | mgp = pci_get_drvdata(pdev); | |
3243 | if (mgp == NULL) | |
3244 | return -EINVAL; | |
3245 | netdev = mgp->dev; | |
3246 | pci_set_power_state(pdev, 0); /* zeros conf space as a side effect */ | |
3247 | msleep(5); /* give card time to respond */ | |
3248 | pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor); | |
3249 | if (vendor == 0xffff) { | |
3250 | printk(KERN_ERR "myri10ge: %s: device disappeared!\n", | |
3251 | mgp->dev->name); | |
3252 | return -EIO; | |
3253 | } | |
83f6e152 | 3254 | |
1a63e846 BG |
3255 | status = pci_restore_state(pdev); |
3256 | if (status) | |
3257 | return status; | |
4c2248cc BG |
3258 | |
3259 | status = pci_enable_device(pdev); | |
1a63e846 | 3260 | if (status) { |
4c2248cc | 3261 | dev_err(&pdev->dev, "failed to enable device\n"); |
1a63e846 | 3262 | return status; |
4c2248cc BG |
3263 | } |
3264 | ||
0da34b6d BG |
3265 | pci_set_master(pdev); |
3266 | ||
0da34b6d | 3267 | myri10ge_reset(mgp); |
013b68bf | 3268 | myri10ge_dummy_rdma(mgp, 1); |
0da34b6d BG |
3269 | |
3270 | /* Save configuration space to be restored if the | |
3271 | * nic resets due to a parity error */ | |
83f6e152 | 3272 | pci_save_state(pdev); |
0da34b6d BG |
3273 | |
3274 | if (netif_running(netdev)) { | |
3275 | rtnl_lock(); | |
df30a740 | 3276 | status = myri10ge_open(netdev); |
0da34b6d | 3277 | rtnl_unlock(); |
df30a740 BG |
3278 | if (status != 0) |
3279 | goto abort_with_enabled; | |
3280 | ||
0da34b6d BG |
3281 | } |
3282 | netif_device_attach(netdev); | |
3283 | ||
3284 | return 0; | |
3285 | ||
4c2248cc BG |
3286 | abort_with_enabled: |
3287 | pci_disable_device(pdev); | |
0da34b6d BG |
3288 | return -EIO; |
3289 | ||
3290 | } | |
0da34b6d BG |
3291 | #endif /* CONFIG_PM */ |
3292 | ||
3293 | static u32 myri10ge_read_reboot(struct myri10ge_priv *mgp) | |
3294 | { | |
3295 | struct pci_dev *pdev = mgp->pdev; | |
3296 | int vs = mgp->vendor_specific_offset; | |
3297 | u32 reboot; | |
3298 | ||
3299 | /*enter read32 mode */ | |
3300 | pci_write_config_byte(pdev, vs + 0x10, 0x3); | |
3301 | ||
3302 | /*read REBOOT_STATUS (0xfffffff0) */ | |
3303 | pci_write_config_dword(pdev, vs + 0x18, 0xfffffff0); | |
3304 | pci_read_config_dword(pdev, vs + 0x14, &reboot); | |
3305 | return reboot; | |
3306 | } | |
3307 | ||
3308 | /* | |
3309 | * This watchdog is used to check whether the board has suffered | |
3310 | * from a parity error and needs to be recovered. | |
3311 | */ | |
c4028958 | 3312 | static void myri10ge_watchdog(struct work_struct *work) |
0da34b6d | 3313 | { |
c4028958 | 3314 | struct myri10ge_priv *mgp = |
6250223e | 3315 | container_of(work, struct myri10ge_priv, watchdog_work); |
b53bef84 | 3316 | struct myri10ge_tx_buf *tx; |
0da34b6d BG |
3317 | u32 reboot; |
3318 | int status; | |
0dcffac1 | 3319 | int i; |
0da34b6d BG |
3320 | u16 cmd, vendor; |
3321 | ||
3322 | mgp->watchdog_resets++; | |
3323 | pci_read_config_word(mgp->pdev, PCI_COMMAND, &cmd); | |
3324 | if ((cmd & PCI_COMMAND_MASTER) == 0) { | |
3325 | /* Bus master DMA disabled? Check to see | |
3326 | * if the card rebooted due to a parity error | |
3327 | * For now, just report it */ | |
3328 | reboot = myri10ge_read_reboot(mgp); | |
3329 | printk(KERN_ERR | |
f181137f BG |
3330 | "myri10ge: %s: NIC rebooted (0x%x),%s resetting\n", |
3331 | mgp->dev->name, reboot, | |
3332 | myri10ge_reset_recover ? " " : " not"); | |
3333 | if (myri10ge_reset_recover == 0) | |
3334 | return; | |
3335 | ||
3336 | myri10ge_reset_recover--; | |
3337 | ||
0da34b6d BG |
3338 | /* |
3339 | * A rebooted nic will come back with config space as | |
3340 | * it was after power was applied to PCIe bus. | |
3341 | * Attempt to restore config space which was saved | |
3342 | * when the driver was loaded, or the last time the | |
3343 | * nic was resumed from power saving mode. | |
3344 | */ | |
83f6e152 | 3345 | pci_restore_state(mgp->pdev); |
7adda30c BG |
3346 | |
3347 | /* save state again for accounting reasons */ | |
83f6e152 | 3348 | pci_save_state(mgp->pdev); |
7adda30c | 3349 | |
0da34b6d BG |
3350 | } else { |
3351 | /* if we get back -1's from our slot, perhaps somebody | |
3352 | * powered off our card. Don't try to reset it in | |
3353 | * this case */ | |
3354 | if (cmd == 0xffff) { | |
3355 | pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor); | |
3356 | if (vendor == 0xffff) { | |
3357 | printk(KERN_ERR | |
3358 | "myri10ge: %s: device disappeared!\n", | |
3359 | mgp->dev->name); | |
3360 | return; | |
3361 | } | |
3362 | } | |
3363 | /* Perhaps it is a software error. Try to reset */ | |
3364 | ||
3365 | printk(KERN_ERR "myri10ge: %s: device timeout, resetting\n", | |
3366 | mgp->dev->name); | |
0dcffac1 BG |
3367 | for (i = 0; i < mgp->num_slices; i++) { |
3368 | tx = &mgp->ss[i].tx; | |
3369 | printk(KERN_INFO | |
3370 | "myri10ge: %s: (%d): %d %d %d %d %d\n", | |
3371 | mgp->dev->name, i, tx->req, tx->done, | |
3372 | tx->pkt_start, tx->pkt_done, | |
3373 | (int)ntohl(mgp->ss[i].fw_stats-> | |
3374 | send_done_count)); | |
3375 | msleep(2000); | |
3376 | printk(KERN_INFO | |
3377 | "myri10ge: %s: (%d): %d %d %d %d %d\n", | |
3378 | mgp->dev->name, i, tx->req, tx->done, | |
3379 | tx->pkt_start, tx->pkt_done, | |
3380 | (int)ntohl(mgp->ss[i].fw_stats-> | |
3381 | send_done_count)); | |
3382 | } | |
0da34b6d BG |
3383 | } |
3384 | rtnl_lock(); | |
3385 | myri10ge_close(mgp->dev); | |
0dcffac1 | 3386 | status = myri10ge_load_firmware(mgp, 1); |
0da34b6d BG |
3387 | if (status != 0) |
3388 | printk(KERN_ERR "myri10ge: %s: failed to load firmware\n", | |
3389 | mgp->dev->name); | |
3390 | else | |
3391 | myri10ge_open(mgp->dev); | |
3392 | rtnl_unlock(); | |
3393 | } | |
3394 | ||
3395 | /* | |
3396 | * We use our own timer routine rather than relying upon | |
3397 | * netdev->tx_timeout because we have a very large hardware transmit | |
3398 | * queue. Due to the large queue, the netdev->tx_timeout function | |
3399 | * cannot detect a NIC with a parity error in a timely fashion if the | |
3400 | * NIC is lightly loaded. | |
3401 | */ | |
3402 | static void myri10ge_watchdog_timer(unsigned long arg) | |
3403 | { | |
3404 | struct myri10ge_priv *mgp; | |
b53bef84 | 3405 | struct myri10ge_slice_state *ss; |
0dcffac1 | 3406 | int i, reset_needed; |
626fda94 | 3407 | u32 rx_pause_cnt; |
0da34b6d BG |
3408 | |
3409 | mgp = (struct myri10ge_priv *)arg; | |
c7dab99b | 3410 | |
0dcffac1 BG |
3411 | rx_pause_cnt = ntohl(mgp->ss[0].fw_stats->dropped_pause); |
3412 | for (i = 0, reset_needed = 0; | |
3413 | i < mgp->num_slices && reset_needed == 0; ++i) { | |
b53bef84 | 3414 | |
0dcffac1 BG |
3415 | ss = &mgp->ss[i]; |
3416 | if (ss->rx_small.watchdog_needed) { | |
3417 | myri10ge_alloc_rx_pages(mgp, &ss->rx_small, | |
3418 | mgp->small_bytes + MXGEFW_PAD, | |
3419 | 1); | |
3420 | if (ss->rx_small.fill_cnt - ss->rx_small.cnt >= | |
3421 | myri10ge_fill_thresh) | |
3422 | ss->rx_small.watchdog_needed = 0; | |
3423 | } | |
3424 | if (ss->rx_big.watchdog_needed) { | |
3425 | myri10ge_alloc_rx_pages(mgp, &ss->rx_big, | |
3426 | mgp->big_bytes, 1); | |
3427 | if (ss->rx_big.fill_cnt - ss->rx_big.cnt >= | |
3428 | myri10ge_fill_thresh) | |
3429 | ss->rx_big.watchdog_needed = 0; | |
3430 | } | |
3431 | ||
3432 | if (ss->tx.req != ss->tx.done && | |
3433 | ss->tx.done == ss->watchdog_tx_done && | |
3434 | ss->watchdog_tx_req != ss->watchdog_tx_done) { | |
3435 | /* nic seems like it might be stuck.. */ | |
3436 | if (rx_pause_cnt != mgp->watchdog_pause) { | |
3437 | if (net_ratelimit()) | |
3438 | printk(KERN_WARNING "myri10ge %s:" | |
3439 | "TX paused, check link partner\n", | |
3440 | mgp->dev->name); | |
3441 | } else { | |
3442 | reset_needed = 1; | |
3443 | } | |
626fda94 | 3444 | } |
0dcffac1 BG |
3445 | ss->watchdog_tx_done = ss->tx.done; |
3446 | ss->watchdog_tx_req = ss->tx.req; | |
626fda94 | 3447 | } |
626fda94 | 3448 | mgp->watchdog_pause = rx_pause_cnt; |
0dcffac1 BG |
3449 | |
3450 | if (reset_needed) { | |
3451 | schedule_work(&mgp->watchdog_work); | |
3452 | } else { | |
3453 | /* rearm timer */ | |
3454 | mod_timer(&mgp->watchdog_timer, | |
3455 | jiffies + myri10ge_watchdog_timeout * HZ); | |
3456 | } | |
0da34b6d BG |
3457 | } |
3458 | ||
77929732 BG |
3459 | static void myri10ge_free_slices(struct myri10ge_priv *mgp) |
3460 | { | |
3461 | struct myri10ge_slice_state *ss; | |
3462 | struct pci_dev *pdev = mgp->pdev; | |
3463 | size_t bytes; | |
3464 | int i; | |
3465 | ||
3466 | if (mgp->ss == NULL) | |
3467 | return; | |
3468 | ||
3469 | for (i = 0; i < mgp->num_slices; i++) { | |
3470 | ss = &mgp->ss[i]; | |
3471 | if (ss->rx_done.entry != NULL) { | |
3472 | bytes = mgp->max_intr_slots * | |
3473 | sizeof(*ss->rx_done.entry); | |
3474 | dma_free_coherent(&pdev->dev, bytes, | |
3475 | ss->rx_done.entry, ss->rx_done.bus); | |
3476 | ss->rx_done.entry = NULL; | |
3477 | } | |
3478 | if (ss->fw_stats != NULL) { | |
3479 | bytes = sizeof(*ss->fw_stats); | |
3480 | dma_free_coherent(&pdev->dev, bytes, | |
3481 | ss->fw_stats, ss->fw_stats_bus); | |
3482 | ss->fw_stats = NULL; | |
3483 | } | |
3484 | } | |
3485 | kfree(mgp->ss); | |
3486 | mgp->ss = NULL; | |
3487 | } | |
3488 | ||
3489 | static int myri10ge_alloc_slices(struct myri10ge_priv *mgp) | |
3490 | { | |
3491 | struct myri10ge_slice_state *ss; | |
3492 | struct pci_dev *pdev = mgp->pdev; | |
3493 | size_t bytes; | |
3494 | int i; | |
3495 | ||
3496 | bytes = sizeof(*mgp->ss) * mgp->num_slices; | |
3497 | mgp->ss = kzalloc(bytes, GFP_KERNEL); | |
3498 | if (mgp->ss == NULL) { | |
3499 | return -ENOMEM; | |
3500 | } | |
3501 | ||
3502 | for (i = 0; i < mgp->num_slices; i++) { | |
3503 | ss = &mgp->ss[i]; | |
3504 | bytes = mgp->max_intr_slots * sizeof(*ss->rx_done.entry); | |
3505 | ss->rx_done.entry = dma_alloc_coherent(&pdev->dev, bytes, | |
3506 | &ss->rx_done.bus, | |
3507 | GFP_KERNEL); | |
3508 | if (ss->rx_done.entry == NULL) | |
3509 | goto abort; | |
3510 | memset(ss->rx_done.entry, 0, bytes); | |
3511 | bytes = sizeof(*ss->fw_stats); | |
3512 | ss->fw_stats = dma_alloc_coherent(&pdev->dev, bytes, | |
3513 | &ss->fw_stats_bus, | |
3514 | GFP_KERNEL); | |
3515 | if (ss->fw_stats == NULL) | |
3516 | goto abort; | |
3517 | ss->mgp = mgp; | |
3518 | ss->dev = mgp->dev; | |
3519 | netif_napi_add(ss->dev, &ss->napi, myri10ge_poll, | |
3520 | myri10ge_napi_weight); | |
3521 | } | |
3522 | return 0; | |
3523 | abort: | |
3524 | myri10ge_free_slices(mgp); | |
3525 | return -ENOMEM; | |
3526 | } | |
3527 | ||
3528 | /* | |
3529 | * This function determines the number of slices supported. | |
3530 | * The number slices is the minumum of the number of CPUS, | |
3531 | * the number of MSI-X irqs supported, the number of slices | |
3532 | * supported by the firmware | |
3533 | */ | |
3534 | static void myri10ge_probe_slices(struct myri10ge_priv *mgp) | |
3535 | { | |
3536 | struct myri10ge_cmd cmd; | |
3537 | struct pci_dev *pdev = mgp->pdev; | |
3538 | char *old_fw; | |
3539 | int i, status, ncpus, msix_cap; | |
3540 | ||
3541 | mgp->num_slices = 1; | |
3542 | msix_cap = pci_find_capability(pdev, PCI_CAP_ID_MSIX); | |
3543 | ncpus = num_online_cpus(); | |
3544 | ||
3545 | if (myri10ge_max_slices == 1 || msix_cap == 0 || | |
3546 | (myri10ge_max_slices == -1 && ncpus < 2)) | |
3547 | return; | |
3548 | ||
3549 | /* try to load the slice aware rss firmware */ | |
3550 | old_fw = mgp->fw_name; | |
3551 | if (old_fw == myri10ge_fw_aligned) | |
3552 | mgp->fw_name = myri10ge_fw_rss_aligned; | |
3553 | else | |
3554 | mgp->fw_name = myri10ge_fw_rss_unaligned; | |
3555 | status = myri10ge_load_firmware(mgp, 0); | |
3556 | if (status != 0) { | |
3557 | dev_info(&pdev->dev, "Rss firmware not found\n"); | |
3558 | return; | |
3559 | } | |
3560 | ||
3561 | /* hit the board with a reset to ensure it is alive */ | |
3562 | memset(&cmd, 0, sizeof(cmd)); | |
3563 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_RESET, &cmd, 0); | |
3564 | if (status != 0) { | |
3565 | dev_err(&mgp->pdev->dev, "failed reset\n"); | |
3566 | goto abort_with_fw; | |
3567 | return; | |
3568 | } | |
3569 | ||
3570 | mgp->max_intr_slots = cmd.data0 / sizeof(struct mcp_slot); | |
3571 | ||
3572 | /* tell it the size of the interrupt queues */ | |
3573 | cmd.data0 = mgp->max_intr_slots * sizeof(struct mcp_slot); | |
3574 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_SIZE, &cmd, 0); | |
3575 | if (status != 0) { | |
3576 | dev_err(&mgp->pdev->dev, "failed MXGEFW_CMD_SET_INTRQ_SIZE\n"); | |
3577 | goto abort_with_fw; | |
3578 | } | |
3579 | ||
3580 | /* ask the maximum number of slices it supports */ | |
3581 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_RSS_QUEUES, &cmd, 0); | |
3582 | if (status != 0) | |
3583 | goto abort_with_fw; | |
3584 | else | |
3585 | mgp->num_slices = cmd.data0; | |
3586 | ||
3587 | /* Only allow multiple slices if MSI-X is usable */ | |
3588 | if (!myri10ge_msi) { | |
3589 | goto abort_with_fw; | |
3590 | } | |
3591 | ||
3592 | /* if the admin did not specify a limit to how many | |
3593 | * slices we should use, cap it automatically to the | |
3594 | * number of CPUs currently online */ | |
3595 | if (myri10ge_max_slices == -1) | |
3596 | myri10ge_max_slices = ncpus; | |
3597 | ||
3598 | if (mgp->num_slices > myri10ge_max_slices) | |
3599 | mgp->num_slices = myri10ge_max_slices; | |
3600 | ||
3601 | /* Now try to allocate as many MSI-X vectors as we have | |
3602 | * slices. We give up on MSI-X if we can only get a single | |
3603 | * vector. */ | |
3604 | ||
3605 | mgp->msix_vectors = kzalloc(mgp->num_slices * | |
3606 | sizeof(*mgp->msix_vectors), GFP_KERNEL); | |
3607 | if (mgp->msix_vectors == NULL) | |
3608 | goto disable_msix; | |
3609 | for (i = 0; i < mgp->num_slices; i++) { | |
3610 | mgp->msix_vectors[i].entry = i; | |
3611 | } | |
3612 | ||
3613 | while (mgp->num_slices > 1) { | |
3614 | /* make sure it is a power of two */ | |
3615 | while (!is_power_of_2(mgp->num_slices)) | |
3616 | mgp->num_slices--; | |
3617 | if (mgp->num_slices == 1) | |
3618 | goto disable_msix; | |
3619 | status = pci_enable_msix(pdev, mgp->msix_vectors, | |
3620 | mgp->num_slices); | |
3621 | if (status == 0) { | |
3622 | pci_disable_msix(pdev); | |
3623 | return; | |
3624 | } | |
3625 | if (status > 0) | |
3626 | mgp->num_slices = status; | |
3627 | else | |
3628 | goto disable_msix; | |
3629 | } | |
3630 | ||
3631 | disable_msix: | |
3632 | if (mgp->msix_vectors != NULL) { | |
3633 | kfree(mgp->msix_vectors); | |
3634 | mgp->msix_vectors = NULL; | |
3635 | } | |
3636 | ||
3637 | abort_with_fw: | |
3638 | mgp->num_slices = 1; | |
3639 | mgp->fw_name = old_fw; | |
3640 | myri10ge_load_firmware(mgp, 0); | |
3641 | } | |
77929732 | 3642 | |
0da34b6d BG |
3643 | static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
3644 | { | |
3645 | struct net_device *netdev; | |
3646 | struct myri10ge_priv *mgp; | |
3647 | struct device *dev = &pdev->dev; | |
0da34b6d BG |
3648 | int i; |
3649 | int status = -ENXIO; | |
0da34b6d | 3650 | int dac_enabled; |
0da34b6d BG |
3651 | |
3652 | netdev = alloc_etherdev(sizeof(*mgp)); | |
3653 | if (netdev == NULL) { | |
3654 | dev_err(dev, "Could not allocate ethernet device\n"); | |
3655 | return -ENOMEM; | |
3656 | } | |
3657 | ||
b245fb67 MH |
3658 | SET_NETDEV_DEV(netdev, &pdev->dev); |
3659 | ||
0da34b6d | 3660 | mgp = netdev_priv(netdev); |
0da34b6d BG |
3661 | mgp->dev = netdev; |
3662 | mgp->pdev = pdev; | |
3663 | mgp->csum_flag = MXGEFW_FLAGS_CKSUM; | |
3664 | mgp->pause = myri10ge_flow_control; | |
3665 | mgp->intr_coal_delay = myri10ge_intr_coal_delay; | |
c58ac5ca | 3666 | mgp->msg_enable = netif_msg_init(myri10ge_debug, MYRI10GE_MSG_DEFAULT); |
0da34b6d BG |
3667 | init_waitqueue_head(&mgp->down_wq); |
3668 | ||
3669 | if (pci_enable_device(pdev)) { | |
3670 | dev_err(&pdev->dev, "pci_enable_device call failed\n"); | |
3671 | status = -ENODEV; | |
3672 | goto abort_with_netdev; | |
3673 | } | |
0da34b6d BG |
3674 | |
3675 | /* Find the vendor-specific cap so we can check | |
3676 | * the reboot register later on */ | |
3677 | mgp->vendor_specific_offset | |
3678 | = pci_find_capability(pdev, PCI_CAP_ID_VNDR); | |
3679 | ||
3680 | /* Set our max read request to 4KB */ | |
302d242c | 3681 | status = pcie_set_readrq(pdev, 4096); |
0da34b6d BG |
3682 | if (status != 0) { |
3683 | dev_err(&pdev->dev, "Error %d writing PCI_EXP_DEVCTL\n", | |
3684 | status); | |
3685 | goto abort_with_netdev; | |
3686 | } | |
3687 | ||
3688 | pci_set_master(pdev); | |
3689 | dac_enabled = 1; | |
3690 | status = pci_set_dma_mask(pdev, DMA_64BIT_MASK); | |
3691 | if (status != 0) { | |
3692 | dac_enabled = 0; | |
3693 | dev_err(&pdev->dev, | |
898eb71c JP |
3694 | "64-bit pci address mask was refused, " |
3695 | "trying 32-bit\n"); | |
0da34b6d BG |
3696 | status = pci_set_dma_mask(pdev, DMA_32BIT_MASK); |
3697 | } | |
3698 | if (status != 0) { | |
3699 | dev_err(&pdev->dev, "Error %d setting DMA mask\n", status); | |
3700 | goto abort_with_netdev; | |
3701 | } | |
b10c0668 BG |
3702 | mgp->cmd = dma_alloc_coherent(&pdev->dev, sizeof(*mgp->cmd), |
3703 | &mgp->cmd_bus, GFP_KERNEL); | |
0da34b6d BG |
3704 | if (mgp->cmd == NULL) |
3705 | goto abort_with_netdev; | |
3706 | ||
0da34b6d BG |
3707 | mgp->board_span = pci_resource_len(pdev, 0); |
3708 | mgp->iomem_base = pci_resource_start(pdev, 0); | |
3709 | mgp->mtrr = -1; | |
276e26c3 | 3710 | mgp->wc_enabled = 0; |
0da34b6d BG |
3711 | #ifdef CONFIG_MTRR |
3712 | mgp->mtrr = mtrr_add(mgp->iomem_base, mgp->board_span, | |
3713 | MTRR_TYPE_WRCOMB, 1); | |
276e26c3 BG |
3714 | if (mgp->mtrr >= 0) |
3715 | mgp->wc_enabled = 1; | |
0da34b6d BG |
3716 | #endif |
3717 | /* Hack. need to get rid of these magic numbers */ | |
3718 | mgp->sram_size = | |
3719 | 2 * 1024 * 1024 - (2 * (48 * 1024) + (32 * 1024)) - 0x100; | |
3720 | if (mgp->sram_size > mgp->board_span) { | |
3721 | dev_err(&pdev->dev, "board span %ld bytes too small\n", | |
3722 | mgp->board_span); | |
3723 | goto abort_with_wc; | |
3724 | } | |
3725 | mgp->sram = ioremap(mgp->iomem_base, mgp->board_span); | |
3726 | if (mgp->sram == NULL) { | |
3727 | dev_err(&pdev->dev, "ioremap failed for %ld bytes at 0x%lx\n", | |
3728 | mgp->board_span, mgp->iomem_base); | |
3729 | status = -ENXIO; | |
3730 | goto abort_with_wc; | |
3731 | } | |
3732 | memcpy_fromio(mgp->eeprom_strings, | |
3733 | mgp->sram + mgp->sram_size - MYRI10GE_EEPROM_STRINGS_SIZE, | |
3734 | MYRI10GE_EEPROM_STRINGS_SIZE); | |
3735 | memset(mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE - 2, 0, 2); | |
3736 | status = myri10ge_read_mac_addr(mgp); | |
3737 | if (status) | |
3738 | goto abort_with_ioremap; | |
3739 | ||
3740 | for (i = 0; i < ETH_ALEN; i++) | |
3741 | netdev->dev_addr[i] = mgp->mac_addr[i]; | |
3742 | ||
5443e9ea BG |
3743 | myri10ge_select_firmware(mgp); |
3744 | ||
0dcffac1 | 3745 | status = myri10ge_load_firmware(mgp, 1); |
0da34b6d BG |
3746 | if (status != 0) { |
3747 | dev_err(&pdev->dev, "failed to load firmware\n"); | |
0dcffac1 BG |
3748 | goto abort_with_ioremap; |
3749 | } | |
3750 | myri10ge_probe_slices(mgp); | |
3751 | status = myri10ge_alloc_slices(mgp); | |
3752 | if (status != 0) { | |
3753 | dev_err(&pdev->dev, "failed to alloc slice state\n"); | |
3754 | goto abort_with_firmware; | |
0da34b6d BG |
3755 | } |
3756 | ||
3757 | status = myri10ge_reset(mgp); | |
3758 | if (status != 0) { | |
3759 | dev_err(&pdev->dev, "failed reset\n"); | |
0dcffac1 | 3760 | goto abort_with_slices; |
0da34b6d | 3761 | } |
981813d8 BG |
3762 | #ifdef CONFIG_DCA |
3763 | myri10ge_setup_dca(mgp); | |
3764 | #endif | |
0da34b6d BG |
3765 | pci_set_drvdata(pdev, mgp); |
3766 | if ((myri10ge_initial_mtu + ETH_HLEN) > MYRI10GE_MAX_ETHER_MTU) | |
3767 | myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN; | |
3768 | if ((myri10ge_initial_mtu + ETH_HLEN) < 68) | |
3769 | myri10ge_initial_mtu = 68; | |
3770 | netdev->mtu = myri10ge_initial_mtu; | |
3771 | netdev->open = myri10ge_open; | |
3772 | netdev->stop = myri10ge_close; | |
3773 | netdev->hard_start_xmit = myri10ge_xmit; | |
3774 | netdev->get_stats = myri10ge_get_stats; | |
3775 | netdev->base_addr = mgp->iomem_base; | |
0da34b6d BG |
3776 | netdev->change_mtu = myri10ge_change_mtu; |
3777 | netdev->set_multicast_list = myri10ge_set_multicast_list; | |
3778 | netdev->set_mac_address = myri10ge_set_mac_address; | |
4f93fde0 | 3779 | netdev->features = mgp->features; |
0da34b6d BG |
3780 | if (dac_enabled) |
3781 | netdev->features |= NETIF_F_HIGHDMA; | |
0da34b6d | 3782 | |
21d05db1 BG |
3783 | /* make sure we can get an irq, and that MSI can be |
3784 | * setup (if available). Also ensure netdev->irq | |
3785 | * is set to correct value if MSI is enabled */ | |
3786 | status = myri10ge_request_irq(mgp); | |
3787 | if (status != 0) | |
3788 | goto abort_with_firmware; | |
3789 | netdev->irq = pdev->irq; | |
3790 | myri10ge_free_irq(mgp); | |
3791 | ||
0da34b6d BG |
3792 | /* Save configuration space to be restored if the |
3793 | * nic resets due to a parity error */ | |
83f6e152 | 3794 | pci_save_state(pdev); |
0da34b6d BG |
3795 | |
3796 | /* Setup the watchdog timer */ | |
3797 | setup_timer(&mgp->watchdog_timer, myri10ge_watchdog_timer, | |
3798 | (unsigned long)mgp); | |
3799 | ||
3800 | SET_ETHTOOL_OPS(netdev, &myri10ge_ethtool_ops); | |
c4028958 | 3801 | INIT_WORK(&mgp->watchdog_work, myri10ge_watchdog); |
0da34b6d BG |
3802 | status = register_netdev(netdev); |
3803 | if (status != 0) { | |
3804 | dev_err(&pdev->dev, "register_netdev failed: %d\n", status); | |
7adda30c | 3805 | goto abort_with_state; |
0da34b6d | 3806 | } |
0dcffac1 BG |
3807 | if (mgp->msix_enabled) |
3808 | dev_info(dev, "%d MSI-X IRQs, tx bndry %d, fw %s, WC %s\n", | |
3809 | mgp->num_slices, mgp->tx_boundary, mgp->fw_name, | |
3810 | (mgp->wc_enabled ? "Enabled" : "Disabled")); | |
3811 | else | |
3812 | dev_info(dev, "%s IRQ %d, tx bndry %d, fw %s, WC %s\n", | |
3813 | mgp->msi_enabled ? "MSI" : "xPIC", | |
3814 | netdev->irq, mgp->tx_boundary, mgp->fw_name, | |
3815 | (mgp->wc_enabled ? "Enabled" : "Disabled")); | |
0da34b6d BG |
3816 | |
3817 | return 0; | |
3818 | ||
7adda30c | 3819 | abort_with_state: |
83f6e152 | 3820 | pci_restore_state(pdev); |
0da34b6d | 3821 | |
0dcffac1 BG |
3822 | abort_with_slices: |
3823 | myri10ge_free_slices(mgp); | |
3824 | ||
0da34b6d BG |
3825 | abort_with_firmware: |
3826 | myri10ge_dummy_rdma(mgp, 0); | |
3827 | ||
0da34b6d BG |
3828 | abort_with_ioremap: |
3829 | iounmap(mgp->sram); | |
3830 | ||
3831 | abort_with_wc: | |
3832 | #ifdef CONFIG_MTRR | |
3833 | if (mgp->mtrr >= 0) | |
3834 | mtrr_del(mgp->mtrr, mgp->iomem_base, mgp->board_span); | |
3835 | #endif | |
b10c0668 BG |
3836 | dma_free_coherent(&pdev->dev, sizeof(*mgp->cmd), |
3837 | mgp->cmd, mgp->cmd_bus); | |
0da34b6d BG |
3838 | |
3839 | abort_with_netdev: | |
3840 | ||
3841 | free_netdev(netdev); | |
3842 | return status; | |
3843 | } | |
3844 | ||
3845 | /* | |
3846 | * myri10ge_remove | |
3847 | * | |
3848 | * Does what is necessary to shutdown one Myrinet device. Called | |
3849 | * once for each Myrinet card by the kernel when a module is | |
3850 | * unloaded. | |
3851 | */ | |
3852 | static void myri10ge_remove(struct pci_dev *pdev) | |
3853 | { | |
3854 | struct myri10ge_priv *mgp; | |
3855 | struct net_device *netdev; | |
0da34b6d BG |
3856 | |
3857 | mgp = pci_get_drvdata(pdev); | |
3858 | if (mgp == NULL) | |
3859 | return; | |
3860 | ||
3861 | flush_scheduled_work(); | |
3862 | netdev = mgp->dev; | |
3863 | unregister_netdev(netdev); | |
0da34b6d | 3864 | |
981813d8 BG |
3865 | #ifdef CONFIG_DCA |
3866 | myri10ge_teardown_dca(mgp); | |
3867 | #endif | |
0da34b6d BG |
3868 | myri10ge_dummy_rdma(mgp, 0); |
3869 | ||
7adda30c | 3870 | /* avoid a memory leak */ |
83f6e152 | 3871 | pci_restore_state(pdev); |
7adda30c | 3872 | |
0da34b6d BG |
3873 | iounmap(mgp->sram); |
3874 | ||
3875 | #ifdef CONFIG_MTRR | |
3876 | if (mgp->mtrr >= 0) | |
3877 | mtrr_del(mgp->mtrr, mgp->iomem_base, mgp->board_span); | |
3878 | #endif | |
0dcffac1 BG |
3879 | myri10ge_free_slices(mgp); |
3880 | if (mgp->msix_vectors != NULL) | |
3881 | kfree(mgp->msix_vectors); | |
b10c0668 BG |
3882 | dma_free_coherent(&pdev->dev, sizeof(*mgp->cmd), |
3883 | mgp->cmd, mgp->cmd_bus); | |
0da34b6d BG |
3884 | |
3885 | free_netdev(netdev); | |
3886 | pci_set_drvdata(pdev, NULL); | |
3887 | } | |
3888 | ||
b10c0668 | 3889 | #define PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E 0x0008 |
a07bc1ff | 3890 | #define PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E_9 0x0009 |
0da34b6d BG |
3891 | |
3892 | static struct pci_device_id myri10ge_pci_tbl[] = { | |
b10c0668 | 3893 | {PCI_DEVICE(PCI_VENDOR_ID_MYRICOM, PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E)}, |
a07bc1ff BG |
3894 | {PCI_DEVICE |
3895 | (PCI_VENDOR_ID_MYRICOM, PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E_9)}, | |
0da34b6d BG |
3896 | {0}, |
3897 | }; | |
3898 | ||
3899 | static struct pci_driver myri10ge_driver = { | |
3900 | .name = "myri10ge", | |
3901 | .probe = myri10ge_probe, | |
3902 | .remove = myri10ge_remove, | |
3903 | .id_table = myri10ge_pci_tbl, | |
3904 | #ifdef CONFIG_PM | |
3905 | .suspend = myri10ge_suspend, | |
3906 | .resume = myri10ge_resume, | |
3907 | #endif | |
3908 | }; | |
3909 | ||
981813d8 BG |
3910 | #ifdef CONFIG_DCA |
3911 | static int | |
3912 | myri10ge_notify_dca(struct notifier_block *nb, unsigned long event, void *p) | |
3913 | { | |
3914 | int err = driver_for_each_device(&myri10ge_driver.driver, | |
3915 | NULL, &event, | |
3916 | myri10ge_notify_dca_device); | |
3917 | ||
3918 | if (err) | |
3919 | return NOTIFY_BAD; | |
3920 | return NOTIFY_DONE; | |
3921 | } | |
3922 | ||
3923 | static struct notifier_block myri10ge_dca_notifier = { | |
3924 | .notifier_call = myri10ge_notify_dca, | |
3925 | .next = NULL, | |
3926 | .priority = 0, | |
3927 | }; | |
3928 | #endif /* CONFIG_DCA */ | |
3929 | ||
0da34b6d BG |
3930 | static __init int myri10ge_init_module(void) |
3931 | { | |
3932 | printk(KERN_INFO "%s: Version %s\n", myri10ge_driver.name, | |
3933 | MYRI10GE_VERSION_STR); | |
0dcffac1 BG |
3934 | |
3935 | if (myri10ge_rss_hash > MXGEFW_RSS_HASH_TYPE_SRC_PORT || | |
3936 | myri10ge_rss_hash < MXGEFW_RSS_HASH_TYPE_IPV4) { | |
3937 | printk(KERN_ERR | |
3938 | "%s: Illegal rssh hash type %d, defaulting to source port\n", | |
3939 | myri10ge_driver.name, myri10ge_rss_hash); | |
3940 | myri10ge_rss_hash = MXGEFW_RSS_HASH_TYPE_SRC_PORT; | |
3941 | } | |
981813d8 BG |
3942 | #ifdef CONFIG_DCA |
3943 | dca_register_notify(&myri10ge_dca_notifier); | |
3944 | #endif | |
0dcffac1 | 3945 | |
0da34b6d BG |
3946 | return pci_register_driver(&myri10ge_driver); |
3947 | } | |
3948 | ||
3949 | module_init(myri10ge_init_module); | |
3950 | ||
3951 | static __exit void myri10ge_cleanup_module(void) | |
3952 | { | |
981813d8 BG |
3953 | #ifdef CONFIG_DCA |
3954 | dca_unregister_notify(&myri10ge_dca_notifier); | |
3955 | #endif | |
0da34b6d BG |
3956 | pci_unregister_driver(&myri10ge_driver); |
3957 | } | |
3958 | ||
3959 | module_exit(myri10ge_cleanup_module); |