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0da34b6d BG |
1 | /************************************************************************* |
2 | * myri10ge.c: Myricom Myri-10G Ethernet driver. | |
3 | * | |
3bea1237 | 4 | * Copyright (C) 2005 - 2011 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 | ||
78ca90ea JP |
41 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
42 | ||
0da34b6d BG |
43 | #include <linux/tcp.h> |
44 | #include <linux/netdevice.h> | |
45 | #include <linux/skbuff.h> | |
46 | #include <linux/string.h> | |
47 | #include <linux/module.h> | |
48 | #include <linux/pci.h> | |
b10c0668 | 49 | #include <linux/dma-mapping.h> |
0da34b6d BG |
50 | #include <linux/etherdevice.h> |
51 | #include <linux/if_ether.h> | |
52 | #include <linux/if_vlan.h> | |
981813d8 | 53 | #include <linux/dca.h> |
0da34b6d BG |
54 | #include <linux/ip.h> |
55 | #include <linux/inet.h> | |
56 | #include <linux/in.h> | |
57 | #include <linux/ethtool.h> | |
58 | #include <linux/firmware.h> | |
59 | #include <linux/delay.h> | |
0da34b6d BG |
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> |
5a0e3ad6 | 66 | #include <linux/slab.h> |
70c71606 | 67 | #include <linux/prefetch.h> |
0da34b6d | 68 | #include <net/checksum.h> |
1e6e9342 AG |
69 | #include <net/ip.h> |
70 | #include <net/tcp.h> | |
0da34b6d | 71 | #include <asm/byteorder.h> |
0da34b6d | 72 | #include <asm/processor.h> |
0da34b6d BG |
73 | |
74 | #include "myri10ge_mcp.h" | |
75 | #include "myri10ge_mcp_gen_header.h" | |
76 | ||
3bea1237 | 77 | #define MYRI10GE_VERSION_STR "1.5.3-1.534" |
0da34b6d BG |
78 | |
79 | MODULE_DESCRIPTION("Myricom 10G driver (10GbE)"); | |
80 | MODULE_AUTHOR("Maintainer: help@myri.com"); | |
81 | MODULE_VERSION(MYRI10GE_VERSION_STR); | |
82 | MODULE_LICENSE("Dual BSD/GPL"); | |
83 | ||
84 | #define MYRI10GE_MAX_ETHER_MTU 9014 | |
85 | ||
86 | #define MYRI10GE_ETH_STOPPED 0 | |
87 | #define MYRI10GE_ETH_STOPPING 1 | |
88 | #define MYRI10GE_ETH_STARTING 2 | |
89 | #define MYRI10GE_ETH_RUNNING 3 | |
90 | #define MYRI10GE_ETH_OPEN_FAILED 4 | |
91 | ||
92 | #define MYRI10GE_EEPROM_STRINGS_SIZE 256 | |
93 | #define MYRI10GE_MAX_SEND_DESC_TSO ((65536 / 2048) * 2) | |
94 | ||
40f6cff5 | 95 | #define MYRI10GE_NO_CONFIRM_DATA htonl(0xffffffff) |
0da34b6d BG |
96 | #define MYRI10GE_NO_RESPONSE_RESULT 0xffffffff |
97 | ||
dd50f336 BG |
98 | #define MYRI10GE_ALLOC_ORDER 0 |
99 | #define MYRI10GE_ALLOC_SIZE ((1 << MYRI10GE_ALLOC_ORDER) * PAGE_SIZE) | |
100 | #define MYRI10GE_MAX_FRAGS_PER_FRAME (MYRI10GE_MAX_ETHER_MTU/MYRI10GE_ALLOC_SIZE + 1) | |
101 | ||
236bb5e6 BG |
102 | #define MYRI10GE_MAX_SLICES 32 |
103 | ||
0da34b6d | 104 | struct myri10ge_rx_buffer_state { |
dd50f336 BG |
105 | struct page *page; |
106 | int page_offset; | |
c755b4b6 FT |
107 | DEFINE_DMA_UNMAP_ADDR(bus); |
108 | DEFINE_DMA_UNMAP_LEN(len); | |
0da34b6d BG |
109 | }; |
110 | ||
111 | struct myri10ge_tx_buffer_state { | |
112 | struct sk_buff *skb; | |
113 | int last; | |
c755b4b6 FT |
114 | DEFINE_DMA_UNMAP_ADDR(bus); |
115 | DEFINE_DMA_UNMAP_LEN(len); | |
0da34b6d BG |
116 | }; |
117 | ||
118 | struct myri10ge_cmd { | |
119 | u32 data0; | |
120 | u32 data1; | |
121 | u32 data2; | |
122 | }; | |
123 | ||
124 | struct myri10ge_rx_buf { | |
125 | struct mcp_kreq_ether_recv __iomem *lanai; /* lanai ptr for recv ring */ | |
0da34b6d BG |
126 | struct mcp_kreq_ether_recv *shadow; /* host shadow of recv ring */ |
127 | struct myri10ge_rx_buffer_state *info; | |
dd50f336 BG |
128 | struct page *page; |
129 | dma_addr_t bus; | |
130 | int page_offset; | |
0da34b6d | 131 | int cnt; |
dd50f336 | 132 | int fill_cnt; |
0da34b6d BG |
133 | int alloc_fail; |
134 | int mask; /* number of rx slots -1 */ | |
dd50f336 | 135 | int watchdog_needed; |
0da34b6d BG |
136 | }; |
137 | ||
138 | struct myri10ge_tx_buf { | |
139 | struct mcp_kreq_ether_send __iomem *lanai; /* lanai ptr for sendq */ | |
236bb5e6 BG |
140 | __be32 __iomem *send_go; /* "go" doorbell ptr */ |
141 | __be32 __iomem *send_stop; /* "stop" doorbell ptr */ | |
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; |
236bb5e6 | 153 | int queue_active; |
0da34b6d BG |
154 | }; |
155 | ||
156 | struct myri10ge_rx_done { | |
157 | struct mcp_slot *entry; | |
158 | dma_addr_t bus; | |
159 | int cnt; | |
160 | int idx; | |
161 | }; | |
162 | ||
b53bef84 BG |
163 | struct myri10ge_slice_netstats { |
164 | unsigned long rx_packets; | |
165 | unsigned long tx_packets; | |
166 | unsigned long rx_bytes; | |
167 | unsigned long tx_bytes; | |
168 | unsigned long rx_dropped; | |
169 | unsigned long tx_dropped; | |
170 | }; | |
171 | ||
172 | struct myri10ge_slice_state { | |
0da34b6d BG |
173 | struct myri10ge_tx_buf tx; /* transmit ring */ |
174 | struct myri10ge_rx_buf rx_small; | |
175 | struct myri10ge_rx_buf rx_big; | |
176 | struct myri10ge_rx_done rx_done; | |
b53bef84 BG |
177 | struct net_device *dev; |
178 | struct napi_struct napi; | |
179 | struct myri10ge_priv *mgp; | |
180 | struct myri10ge_slice_netstats stats; | |
181 | __be32 __iomem *irq_claim; | |
182 | struct mcp_irq_data *fw_stats; | |
183 | dma_addr_t fw_stats_bus; | |
184 | int watchdog_tx_done; | |
185 | int watchdog_tx_req; | |
d0234215 | 186 | int watchdog_rx_done; |
c689b81b | 187 | int stuck; |
5dd2d332 | 188 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
189 | int cached_dca_tag; |
190 | int cpu; | |
191 | __be32 __iomem *dca_tag; | |
192 | #endif | |
0dcffac1 | 193 | char irq_desc[32]; |
b53bef84 BG |
194 | }; |
195 | ||
196 | struct myri10ge_priv { | |
0dcffac1 | 197 | struct myri10ge_slice_state *ss; |
b53bef84 | 198 | int tx_boundary; /* boundary transmits cannot cross */ |
0dcffac1 | 199 | int num_slices; |
b53bef84 | 200 | int running; /* running? */ |
0da34b6d | 201 | int small_bytes; |
dd50f336 | 202 | int big_bytes; |
fa0a90d9 | 203 | int max_intr_slots; |
0da34b6d | 204 | struct net_device *dev; |
0da34b6d BG |
205 | u8 __iomem *sram; |
206 | int sram_size; | |
207 | unsigned long board_span; | |
208 | unsigned long iomem_base; | |
40f6cff5 | 209 | __be32 __iomem *irq_deassert; |
0da34b6d BG |
210 | char *mac_addr_string; |
211 | struct mcp_cmd_response *cmd; | |
212 | dma_addr_t cmd_bus; | |
0da34b6d BG |
213 | struct pci_dev *pdev; |
214 | int msi_enabled; | |
0dcffac1 BG |
215 | int msix_enabled; |
216 | struct msix_entry *msix_vectors; | |
5dd2d332 | 217 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 | 218 | int dca_enabled; |
ef09aadf | 219 | int relaxed_order; |
981813d8 | 220 | #endif |
66341fff | 221 | u32 link_state; |
0da34b6d BG |
222 | unsigned int rdma_tags_available; |
223 | int intr_coal_delay; | |
40f6cff5 | 224 | __be32 __iomem *intr_coal_delay_ptr; |
e4b6c303 | 225 | int wc_cookie; |
0da34b6d BG |
226 | int down_cnt; |
227 | wait_queue_head_t down_wq; | |
228 | struct work_struct watchdog_work; | |
229 | struct timer_list watchdog_timer; | |
0da34b6d | 230 | int watchdog_resets; |
b53bef84 | 231 | int watchdog_pause; |
0da34b6d | 232 | int pause; |
7d351035 | 233 | bool fw_name_allocated; |
0da34b6d BG |
234 | char *fw_name; |
235 | char eeprom_strings[MYRI10GE_EEPROM_STRINGS_SIZE]; | |
c0bf8801 | 236 | char *product_code_string; |
0da34b6d | 237 | char fw_version[128]; |
9dc6f0e7 BG |
238 | int fw_ver_major; |
239 | int fw_ver_minor; | |
240 | int fw_ver_tiny; | |
241 | int adopted_rx_filter_bug; | |
1409a932 | 242 | u8 mac_addr[ETH_ALEN]; /* eeprom mac address */ |
0da34b6d BG |
243 | unsigned long serial_number; |
244 | int vendor_specific_offset; | |
85a7ea1b | 245 | int fw_multicast_support; |
04ed3e74 | 246 | u32 features; |
4f93fde0 | 247 | u32 max_tso6; |
0da34b6d BG |
248 | u32 read_dma; |
249 | u32 write_dma; | |
250 | u32 read_write_dma; | |
c58ac5ca BG |
251 | u32 link_changes; |
252 | u32 msg_enable; | |
2d90b0aa | 253 | unsigned int board_number; |
d0234215 | 254 | int rebooted; |
0da34b6d BG |
255 | }; |
256 | ||
257 | static char *myri10ge_fw_unaligned = "myri10ge_ethp_z8e.dat"; | |
258 | static char *myri10ge_fw_aligned = "myri10ge_eth_z8e.dat"; | |
0dcffac1 BG |
259 | static char *myri10ge_fw_rss_unaligned = "myri10ge_rss_ethp_z8e.dat"; |
260 | static char *myri10ge_fw_rss_aligned = "myri10ge_rss_eth_z8e.dat"; | |
b9721d5a BH |
261 | MODULE_FIRMWARE("myri10ge_ethp_z8e.dat"); |
262 | MODULE_FIRMWARE("myri10ge_eth_z8e.dat"); | |
263 | MODULE_FIRMWARE("myri10ge_rss_ethp_z8e.dat"); | |
264 | MODULE_FIRMWARE("myri10ge_rss_eth_z8e.dat"); | |
0da34b6d | 265 | |
b51d23e4 | 266 | /* Careful: must be accessed under kernel_param_lock() */ |
0da34b6d | 267 | static char *myri10ge_fw_name = NULL; |
d3757ba4 | 268 | module_param(myri10ge_fw_name, charp, 0644); |
d1ce3a0f | 269 | MODULE_PARM_DESC(myri10ge_fw_name, "Firmware image name"); |
0da34b6d | 270 | |
2d90b0aa BG |
271 | #define MYRI10GE_MAX_BOARDS 8 |
272 | static char *myri10ge_fw_names[MYRI10GE_MAX_BOARDS] = | |
7fe624f5 | 273 | {[0 ... (MYRI10GE_MAX_BOARDS - 1)] = NULL }; |
2d90b0aa BG |
274 | module_param_array_named(myri10ge_fw_names, myri10ge_fw_names, charp, NULL, |
275 | 0444); | |
1a61a8f1 | 276 | MODULE_PARM_DESC(myri10ge_fw_names, "Firmware image names per board"); |
2d90b0aa | 277 | |
0da34b6d | 278 | static int myri10ge_ecrc_enable = 1; |
d3757ba4 | 279 | module_param(myri10ge_ecrc_enable, int, 0444); |
d1ce3a0f | 280 | MODULE_PARM_DESC(myri10ge_ecrc_enable, "Enable Extended CRC on PCI-E"); |
0da34b6d | 281 | |
0da34b6d | 282 | static int myri10ge_small_bytes = -1; /* -1 == auto */ |
d3757ba4 | 283 | module_param(myri10ge_small_bytes, int, 0644); |
d1ce3a0f | 284 | MODULE_PARM_DESC(myri10ge_small_bytes, "Threshold of small packets"); |
0da34b6d BG |
285 | |
286 | static int myri10ge_msi = 1; /* enable msi by default */ | |
d3757ba4 | 287 | module_param(myri10ge_msi, int, 0644); |
d1ce3a0f | 288 | MODULE_PARM_DESC(myri10ge_msi, "Enable Message Signalled Interrupts"); |
0da34b6d | 289 | |
f761fae1 | 290 | static int myri10ge_intr_coal_delay = 75; |
d3757ba4 | 291 | module_param(myri10ge_intr_coal_delay, int, 0444); |
d1ce3a0f | 292 | MODULE_PARM_DESC(myri10ge_intr_coal_delay, "Interrupt coalescing delay"); |
0da34b6d BG |
293 | |
294 | static int myri10ge_flow_control = 1; | |
d3757ba4 | 295 | module_param(myri10ge_flow_control, int, 0444); |
d1ce3a0f | 296 | MODULE_PARM_DESC(myri10ge_flow_control, "Pause parameter"); |
0da34b6d BG |
297 | |
298 | static int myri10ge_deassert_wait = 1; | |
d3757ba4 | 299 | module_param(myri10ge_deassert_wait, int, 0644); |
0da34b6d | 300 | MODULE_PARM_DESC(myri10ge_deassert_wait, |
d1ce3a0f | 301 | "Wait when deasserting legacy interrupts"); |
0da34b6d BG |
302 | |
303 | static int myri10ge_force_firmware = 0; | |
d3757ba4 | 304 | module_param(myri10ge_force_firmware, int, 0444); |
0da34b6d | 305 | MODULE_PARM_DESC(myri10ge_force_firmware, |
d1ce3a0f | 306 | "Force firmware to assume aligned completions"); |
0da34b6d | 307 | |
0da34b6d | 308 | static int myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN; |
d3757ba4 | 309 | module_param(myri10ge_initial_mtu, int, 0444); |
d1ce3a0f | 310 | MODULE_PARM_DESC(myri10ge_initial_mtu, "Initial MTU"); |
0da34b6d BG |
311 | |
312 | static int myri10ge_napi_weight = 64; | |
d3757ba4 | 313 | module_param(myri10ge_napi_weight, int, 0444); |
d1ce3a0f | 314 | MODULE_PARM_DESC(myri10ge_napi_weight, "Set NAPI weight"); |
0da34b6d BG |
315 | |
316 | static int myri10ge_watchdog_timeout = 1; | |
d3757ba4 | 317 | module_param(myri10ge_watchdog_timeout, int, 0444); |
d1ce3a0f | 318 | MODULE_PARM_DESC(myri10ge_watchdog_timeout, "Set watchdog timeout"); |
0da34b6d BG |
319 | |
320 | static int myri10ge_max_irq_loops = 1048576; | |
d3757ba4 | 321 | module_param(myri10ge_max_irq_loops, int, 0444); |
0da34b6d | 322 | MODULE_PARM_DESC(myri10ge_max_irq_loops, |
d1ce3a0f | 323 | "Set stuck legacy IRQ detection threshold"); |
0da34b6d | 324 | |
c58ac5ca BG |
325 | #define MYRI10GE_MSG_DEFAULT NETIF_MSG_LINK |
326 | ||
327 | static int myri10ge_debug = -1; /* defaults above */ | |
328 | module_param(myri10ge_debug, int, 0); | |
329 | MODULE_PARM_DESC(myri10ge_debug, "Debug level (0=none,...,16=all)"); | |
330 | ||
dd50f336 | 331 | static int myri10ge_fill_thresh = 256; |
d3757ba4 | 332 | module_param(myri10ge_fill_thresh, int, 0644); |
d1ce3a0f | 333 | MODULE_PARM_DESC(myri10ge_fill_thresh, "Number of empty rx slots allowed"); |
dd50f336 | 334 | |
f181137f BG |
335 | static int myri10ge_reset_recover = 1; |
336 | ||
0dcffac1 | 337 | static int myri10ge_max_slices = 1; |
d3757ba4 | 338 | module_param(myri10ge_max_slices, int, 0444); |
0dcffac1 BG |
339 | MODULE_PARM_DESC(myri10ge_max_slices, "Max tx/rx queues"); |
340 | ||
4b860abf | 341 | static int myri10ge_rss_hash = MXGEFW_RSS_HASH_TYPE_SRC_DST_PORT; |
d3757ba4 | 342 | module_param(myri10ge_rss_hash, int, 0444); |
0dcffac1 BG |
343 | MODULE_PARM_DESC(myri10ge_rss_hash, "Type of RSS hashing to do"); |
344 | ||
981813d8 | 345 | static int myri10ge_dca = 1; |
d3757ba4 | 346 | module_param(myri10ge_dca, int, 0444); |
981813d8 BG |
347 | MODULE_PARM_DESC(myri10ge_dca, "Enable DCA if possible"); |
348 | ||
0da34b6d BG |
349 | #define MYRI10GE_FW_OFFSET 1024*1024 |
350 | #define MYRI10GE_HIGHPART_TO_U32(X) \ | |
351 | (sizeof (X) == 8) ? ((u32)((u64)(X) >> 32)) : (0) | |
352 | #define MYRI10GE_LOWPART_TO_U32(X) ((u32)(X)) | |
353 | ||
354 | #define myri10ge_pio_copy(to,from,size) __iowrite64_copy(to,from,size/8) | |
355 | ||
2f76216f | 356 | static void myri10ge_set_multicast_list(struct net_device *dev); |
61357325 SH |
357 | static netdev_tx_t myri10ge_sw_tso(struct sk_buff *skb, |
358 | struct net_device *dev); | |
2f76216f | 359 | |
6250223e | 360 | static inline void put_be32(__be32 val, __be32 __iomem * p) |
40f6cff5 | 361 | { |
6250223e | 362 | __raw_writel((__force __u32) val, (__force void __iomem *)p); |
40f6cff5 AV |
363 | } |
364 | ||
bc1f4470 | 365 | static void myri10ge_get_stats(struct net_device *dev, |
366 | struct rtnl_link_stats64 *stats); | |
59081825 | 367 | |
7d351035 RR |
368 | static void set_fw_name(struct myri10ge_priv *mgp, char *name, bool allocated) |
369 | { | |
370 | if (mgp->fw_name_allocated) | |
371 | kfree(mgp->fw_name); | |
372 | mgp->fw_name = name; | |
373 | mgp->fw_name_allocated = allocated; | |
374 | } | |
375 | ||
0da34b6d BG |
376 | static int |
377 | myri10ge_send_cmd(struct myri10ge_priv *mgp, u32 cmd, | |
378 | struct myri10ge_cmd *data, int atomic) | |
379 | { | |
380 | struct mcp_cmd *buf; | |
381 | char buf_bytes[sizeof(*buf) + 8]; | |
382 | struct mcp_cmd_response *response = mgp->cmd; | |
e700f9f4 | 383 | char __iomem *cmd_addr = mgp->sram + MXGEFW_ETH_CMD; |
0da34b6d BG |
384 | u32 dma_low, dma_high, result, value; |
385 | int sleep_total = 0; | |
386 | ||
387 | /* ensure buf is aligned to 8 bytes */ | |
388 | buf = (struct mcp_cmd *)ALIGN((unsigned long)buf_bytes, 8); | |
389 | ||
390 | buf->data0 = htonl(data->data0); | |
391 | buf->data1 = htonl(data->data1); | |
392 | buf->data2 = htonl(data->data2); | |
393 | buf->cmd = htonl(cmd); | |
394 | dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus); | |
395 | dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus); | |
396 | ||
397 | buf->response_addr.low = htonl(dma_low); | |
398 | buf->response_addr.high = htonl(dma_high); | |
40f6cff5 | 399 | response->result = htonl(MYRI10GE_NO_RESPONSE_RESULT); |
0da34b6d BG |
400 | mb(); |
401 | myri10ge_pio_copy(cmd_addr, buf, sizeof(*buf)); | |
402 | ||
403 | /* wait up to 15ms. Longest command is the DMA benchmark, | |
404 | * which is capped at 5ms, but runs from a timeout handler | |
405 | * that runs every 7.8ms. So a 15ms timeout leaves us with | |
406 | * a 2.2ms margin | |
407 | */ | |
408 | if (atomic) { | |
409 | /* if atomic is set, do not sleep, | |
410 | * and try to get the completion quickly | |
411 | * (1ms will be enough for those commands) */ | |
412 | for (sleep_total = 0; | |
8e95a202 JP |
413 | sleep_total < 1000 && |
414 | response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT); | |
bd2db0cf | 415 | sleep_total += 10) { |
0da34b6d | 416 | udelay(10); |
bd2db0cf BG |
417 | mb(); |
418 | } | |
0da34b6d BG |
419 | } else { |
420 | /* use msleep for most command */ | |
421 | for (sleep_total = 0; | |
8e95a202 JP |
422 | sleep_total < 15 && |
423 | response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT); | |
0da34b6d BG |
424 | sleep_total++) |
425 | msleep(1); | |
426 | } | |
427 | ||
428 | result = ntohl(response->result); | |
429 | value = ntohl(response->data); | |
430 | if (result != MYRI10GE_NO_RESPONSE_RESULT) { | |
431 | if (result == 0) { | |
432 | data->data0 = value; | |
433 | return 0; | |
85a7ea1b BG |
434 | } else if (result == MXGEFW_CMD_UNKNOWN) { |
435 | return -ENOSYS; | |
5443e9ea BG |
436 | } else if (result == MXGEFW_CMD_ERROR_UNALIGNED) { |
437 | return -E2BIG; | |
236bb5e6 BG |
438 | } else if (result == MXGEFW_CMD_ERROR_RANGE && |
439 | cmd == MXGEFW_CMD_ENABLE_RSS_QUEUES && | |
440 | (data-> | |
441 | data1 & MXGEFW_SLICE_ENABLE_MULTIPLE_TX_QUEUES) != | |
442 | 0) { | |
443 | return -ERANGE; | |
0da34b6d BG |
444 | } else { |
445 | dev_err(&mgp->pdev->dev, | |
446 | "command %d failed, result = %d\n", | |
447 | cmd, result); | |
448 | return -ENXIO; | |
449 | } | |
450 | } | |
451 | ||
452 | dev_err(&mgp->pdev->dev, "command %d timed out, result = %d\n", | |
453 | cmd, result); | |
454 | return -EAGAIN; | |
455 | } | |
456 | ||
457 | /* | |
458 | * The eeprom strings on the lanaiX have the format | |
459 | * SN=x\0 | |
460 | * MAC=x:x:x:x:x:x\0 | |
461 | * PT:ddd mmm xx xx:xx:xx xx\0 | |
462 | * PV:ddd mmm xx xx:xx:xx xx\0 | |
463 | */ | |
464 | static int myri10ge_read_mac_addr(struct myri10ge_priv *mgp) | |
465 | { | |
466 | char *ptr, *limit; | |
467 | int i; | |
468 | ||
469 | ptr = mgp->eeprom_strings; | |
470 | limit = mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE; | |
471 | ||
472 | while (*ptr != '\0' && ptr < limit) { | |
473 | if (memcmp(ptr, "MAC=", 4) == 0) { | |
474 | ptr += 4; | |
475 | mgp->mac_addr_string = ptr; | |
476 | for (i = 0; i < 6; i++) { | |
477 | if ((ptr + 2) > limit) | |
478 | goto abort; | |
479 | mgp->mac_addr[i] = | |
480 | simple_strtoul(ptr, &ptr, 16); | |
481 | ptr += 1; | |
482 | } | |
483 | } | |
c0bf8801 BG |
484 | if (memcmp(ptr, "PC=", 3) == 0) { |
485 | ptr += 3; | |
486 | mgp->product_code_string = ptr; | |
487 | } | |
0da34b6d BG |
488 | if (memcmp((const void *)ptr, "SN=", 3) == 0) { |
489 | ptr += 3; | |
490 | mgp->serial_number = simple_strtoul(ptr, &ptr, 10); | |
491 | } | |
492 | while (ptr < limit && *ptr++) ; | |
493 | } | |
494 | ||
495 | return 0; | |
496 | ||
497 | abort: | |
498 | dev_err(&mgp->pdev->dev, "failed to parse eeprom_strings\n"); | |
499 | return -ENXIO; | |
500 | } | |
501 | ||
502 | /* | |
503 | * Enable or disable periodic RDMAs from the host to make certain | |
504 | * chipsets resend dropped PCIe messages | |
505 | */ | |
506 | ||
507 | static void myri10ge_dummy_rdma(struct myri10ge_priv *mgp, int enable) | |
508 | { | |
509 | char __iomem *submit; | |
f8fd57c1 | 510 | __be32 buf[16] __attribute__ ((__aligned__(8))); |
0da34b6d BG |
511 | u32 dma_low, dma_high; |
512 | int i; | |
513 | ||
514 | /* clear confirmation addr */ | |
515 | mgp->cmd->data = 0; | |
516 | mb(); | |
517 | ||
518 | /* send a rdma command to the PCIe engine, and wait for the | |
519 | * response in the confirmation address. The firmware should | |
520 | * write a -1 there to indicate it is alive and well | |
521 | */ | |
522 | dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus); | |
523 | dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus); | |
524 | ||
525 | buf[0] = htonl(dma_high); /* confirm addr MSW */ | |
526 | buf[1] = htonl(dma_low); /* confirm addr LSW */ | |
40f6cff5 | 527 | buf[2] = MYRI10GE_NO_CONFIRM_DATA; /* confirm data */ |
0da34b6d BG |
528 | buf[3] = htonl(dma_high); /* dummy addr MSW */ |
529 | buf[4] = htonl(dma_low); /* dummy addr LSW */ | |
530 | buf[5] = htonl(enable); /* enable? */ | |
531 | ||
e700f9f4 | 532 | submit = mgp->sram + MXGEFW_BOOT_DUMMY_RDMA; |
0da34b6d BG |
533 | |
534 | myri10ge_pio_copy(submit, &buf, sizeof(buf)); | |
535 | for (i = 0; mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 20; i++) | |
536 | msleep(1); | |
537 | if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA) | |
538 | dev_err(&mgp->pdev->dev, "dummy rdma %s failed\n", | |
539 | (enable ? "enable" : "disable")); | |
540 | } | |
541 | ||
542 | static int | |
543 | myri10ge_validate_firmware(struct myri10ge_priv *mgp, | |
544 | struct mcp_gen_header *hdr) | |
545 | { | |
546 | struct device *dev = &mgp->pdev->dev; | |
0da34b6d BG |
547 | |
548 | /* check firmware type */ | |
549 | if (ntohl(hdr->mcp_type) != MCP_TYPE_ETH) { | |
550 | dev_err(dev, "Bad firmware type: 0x%x\n", ntohl(hdr->mcp_type)); | |
551 | return -EINVAL; | |
552 | } | |
553 | ||
554 | /* save firmware version for ethtool */ | |
555 | strncpy(mgp->fw_version, hdr->version, sizeof(mgp->fw_version)); | |
8dff81e8 | 556 | mgp->fw_version[sizeof(mgp->fw_version) - 1] = '\0'; |
0da34b6d | 557 | |
9dc6f0e7 BG |
558 | sscanf(mgp->fw_version, "%d.%d.%d", &mgp->fw_ver_major, |
559 | &mgp->fw_ver_minor, &mgp->fw_ver_tiny); | |
0da34b6d | 560 | |
8e95a202 JP |
561 | if (!(mgp->fw_ver_major == MXGEFW_VERSION_MAJOR && |
562 | mgp->fw_ver_minor == MXGEFW_VERSION_MINOR)) { | |
0da34b6d BG |
563 | dev_err(dev, "Found firmware version %s\n", mgp->fw_version); |
564 | dev_err(dev, "Driver needs %d.%d\n", MXGEFW_VERSION_MAJOR, | |
565 | MXGEFW_VERSION_MINOR); | |
566 | return -EINVAL; | |
567 | } | |
568 | return 0; | |
569 | } | |
570 | ||
571 | static int myri10ge_load_hotplug_firmware(struct myri10ge_priv *mgp, u32 * size) | |
572 | { | |
573 | unsigned crc, reread_crc; | |
574 | const struct firmware *fw; | |
575 | struct device *dev = &mgp->pdev->dev; | |
b0d31d6b | 576 | unsigned char *fw_readback; |
0da34b6d BG |
577 | struct mcp_gen_header *hdr; |
578 | size_t hdr_offset; | |
579 | int status; | |
e454358a | 580 | unsigned i; |
0da34b6d BG |
581 | |
582 | if ((status = request_firmware(&fw, mgp->fw_name, dev)) < 0) { | |
583 | dev_err(dev, "Unable to load %s firmware image via hotplug\n", | |
584 | mgp->fw_name); | |
585 | status = -EINVAL; | |
586 | goto abort_with_nothing; | |
587 | } | |
588 | ||
589 | /* check size */ | |
590 | ||
591 | if (fw->size >= mgp->sram_size - MYRI10GE_FW_OFFSET || | |
592 | fw->size < MCP_HEADER_PTR_OFFSET + 4) { | |
593 | dev_err(dev, "Firmware size invalid:%d\n", (int)fw->size); | |
594 | status = -EINVAL; | |
595 | goto abort_with_fw; | |
596 | } | |
597 | ||
598 | /* check id */ | |
40f6cff5 | 599 | hdr_offset = ntohl(*(__be32 *) (fw->data + MCP_HEADER_PTR_OFFSET)); |
0da34b6d BG |
600 | if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > fw->size) { |
601 | dev_err(dev, "Bad firmware file\n"); | |
602 | status = -EINVAL; | |
603 | goto abort_with_fw; | |
604 | } | |
605 | hdr = (void *)(fw->data + hdr_offset); | |
606 | ||
607 | status = myri10ge_validate_firmware(mgp, hdr); | |
608 | if (status != 0) | |
609 | goto abort_with_fw; | |
610 | ||
611 | crc = crc32(~0, fw->data, fw->size); | |
e454358a BG |
612 | for (i = 0; i < fw->size; i += 256) { |
613 | myri10ge_pio_copy(mgp->sram + MYRI10GE_FW_OFFSET + i, | |
614 | fw->data + i, | |
615 | min(256U, (unsigned)(fw->size - i))); | |
616 | mb(); | |
617 | readb(mgp->sram); | |
b10c0668 | 618 | } |
b0d31d6b DW |
619 | fw_readback = vmalloc(fw->size); |
620 | if (!fw_readback) { | |
621 | status = -ENOMEM; | |
622 | goto abort_with_fw; | |
623 | } | |
0da34b6d | 624 | /* corruption checking is good for parity recovery and buggy chipset */ |
b0d31d6b DW |
625 | memcpy_fromio(fw_readback, mgp->sram + MYRI10GE_FW_OFFSET, fw->size); |
626 | reread_crc = crc32(~0, fw_readback, fw->size); | |
627 | vfree(fw_readback); | |
0da34b6d BG |
628 | if (crc != reread_crc) { |
629 | dev_err(dev, "CRC failed(fw-len=%u), got 0x%x (expect 0x%x)\n", | |
630 | (unsigned)fw->size, reread_crc, crc); | |
631 | status = -EIO; | |
632 | goto abort_with_fw; | |
633 | } | |
634 | *size = (u32) fw->size; | |
635 | ||
636 | abort_with_fw: | |
637 | release_firmware(fw); | |
638 | ||
639 | abort_with_nothing: | |
640 | return status; | |
641 | } | |
642 | ||
643 | static int myri10ge_adopt_running_firmware(struct myri10ge_priv *mgp) | |
644 | { | |
645 | struct mcp_gen_header *hdr; | |
646 | struct device *dev = &mgp->pdev->dev; | |
647 | const size_t bytes = sizeof(struct mcp_gen_header); | |
648 | size_t hdr_offset; | |
649 | int status; | |
650 | ||
651 | /* find running firmware header */ | |
66341fff | 652 | hdr_offset = swab32(readl(mgp->sram + MCP_HEADER_PTR_OFFSET)); |
0da34b6d BG |
653 | |
654 | if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > mgp->sram_size) { | |
655 | dev_err(dev, "Running firmware has bad header offset (%d)\n", | |
656 | (int)hdr_offset); | |
657 | return -EIO; | |
658 | } | |
659 | ||
660 | /* copy header of running firmware from SRAM to host memory to | |
661 | * validate firmware */ | |
662 | hdr = kmalloc(bytes, GFP_KERNEL); | |
b2adaca9 | 663 | if (hdr == NULL) |
0da34b6d | 664 | return -ENOMEM; |
b2adaca9 | 665 | |
0da34b6d BG |
666 | memcpy_fromio(hdr, mgp->sram + hdr_offset, bytes); |
667 | status = myri10ge_validate_firmware(mgp, hdr); | |
668 | kfree(hdr); | |
9dc6f0e7 BG |
669 | |
670 | /* check to see if adopted firmware has bug where adopting | |
671 | * it will cause broadcasts to be filtered unless the NIC | |
672 | * is kept in ALLMULTI mode */ | |
673 | if (mgp->fw_ver_major == 1 && mgp->fw_ver_minor == 4 && | |
674 | mgp->fw_ver_tiny >= 4 && mgp->fw_ver_tiny <= 11) { | |
675 | mgp->adopted_rx_filter_bug = 1; | |
676 | dev_warn(dev, "Adopting fw %d.%d.%d: " | |
677 | "working around rx filter bug\n", | |
678 | mgp->fw_ver_major, mgp->fw_ver_minor, | |
679 | mgp->fw_ver_tiny); | |
680 | } | |
0da34b6d BG |
681 | return status; |
682 | } | |
683 | ||
0178ec3d | 684 | static int myri10ge_get_firmware_capabilities(struct myri10ge_priv *mgp) |
fa0a90d9 BG |
685 | { |
686 | struct myri10ge_cmd cmd; | |
687 | int status; | |
688 | ||
689 | /* probe for IPv6 TSO support */ | |
690 | mgp->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO; | |
691 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_TSO6_HDR_SIZE, | |
692 | &cmd, 0); | |
693 | if (status == 0) { | |
694 | mgp->max_tso6 = cmd.data0; | |
695 | mgp->features |= NETIF_F_TSO6; | |
696 | } | |
697 | ||
698 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_RX_RING_SIZE, &cmd, 0); | |
699 | if (status != 0) { | |
700 | dev_err(&mgp->pdev->dev, | |
701 | "failed MXGEFW_CMD_GET_RX_RING_SIZE\n"); | |
702 | return -ENXIO; | |
703 | } | |
704 | ||
705 | mgp->max_intr_slots = 2 * (cmd.data0 / sizeof(struct mcp_dma_addr)); | |
706 | ||
707 | return 0; | |
708 | } | |
709 | ||
0dcffac1 | 710 | static int myri10ge_load_firmware(struct myri10ge_priv *mgp, int adopt) |
0da34b6d BG |
711 | { |
712 | char __iomem *submit; | |
f8fd57c1 | 713 | __be32 buf[16] __attribute__ ((__aligned__(8))); |
0da34b6d BG |
714 | u32 dma_low, dma_high, size; |
715 | int status, i; | |
716 | ||
b10c0668 | 717 | size = 0; |
0da34b6d BG |
718 | status = myri10ge_load_hotplug_firmware(mgp, &size); |
719 | if (status) { | |
0dcffac1 BG |
720 | if (!adopt) |
721 | return status; | |
0da34b6d BG |
722 | dev_warn(&mgp->pdev->dev, "hotplug firmware loading failed\n"); |
723 | ||
724 | /* Do not attempt to adopt firmware if there | |
725 | * was a bad crc */ | |
726 | if (status == -EIO) | |
727 | return status; | |
728 | ||
729 | status = myri10ge_adopt_running_firmware(mgp); | |
730 | if (status != 0) { | |
731 | dev_err(&mgp->pdev->dev, | |
732 | "failed to adopt running firmware\n"); | |
733 | return status; | |
734 | } | |
735 | dev_info(&mgp->pdev->dev, | |
736 | "Successfully adopted running firmware\n"); | |
b53bef84 | 737 | if (mgp->tx_boundary == 4096) { |
0da34b6d BG |
738 | dev_warn(&mgp->pdev->dev, |
739 | "Using firmware currently running on NIC" | |
740 | ". For optimal\n"); | |
741 | dev_warn(&mgp->pdev->dev, | |
742 | "performance consider loading optimized " | |
743 | "firmware\n"); | |
744 | dev_warn(&mgp->pdev->dev, "via hotplug\n"); | |
745 | } | |
746 | ||
7d351035 | 747 | set_fw_name(mgp, "adopted", false); |
b53bef84 | 748 | mgp->tx_boundary = 2048; |
fa0a90d9 BG |
749 | myri10ge_dummy_rdma(mgp, 1); |
750 | status = myri10ge_get_firmware_capabilities(mgp); | |
0da34b6d BG |
751 | return status; |
752 | } | |
753 | ||
754 | /* clear confirmation addr */ | |
755 | mgp->cmd->data = 0; | |
756 | mb(); | |
757 | ||
758 | /* send a reload command to the bootstrap MCP, and wait for the | |
759 | * response in the confirmation address. The firmware should | |
760 | * write a -1 there to indicate it is alive and well | |
761 | */ | |
762 | dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus); | |
763 | dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus); | |
764 | ||
765 | buf[0] = htonl(dma_high); /* confirm addr MSW */ | |
766 | buf[1] = htonl(dma_low); /* confirm addr LSW */ | |
40f6cff5 | 767 | buf[2] = MYRI10GE_NO_CONFIRM_DATA; /* confirm data */ |
0da34b6d BG |
768 | |
769 | /* FIX: All newest firmware should un-protect the bottom of | |
770 | * the sram before handoff. However, the very first interfaces | |
771 | * do not. Therefore the handoff copy must skip the first 8 bytes | |
772 | */ | |
773 | buf[3] = htonl(MYRI10GE_FW_OFFSET + 8); /* where the code starts */ | |
774 | buf[4] = htonl(size - 8); /* length of code */ | |
775 | buf[5] = htonl(8); /* where to copy to */ | |
776 | buf[6] = htonl(0); /* where to jump to */ | |
777 | ||
e700f9f4 | 778 | submit = mgp->sram + MXGEFW_BOOT_HANDOFF; |
0da34b6d BG |
779 | |
780 | myri10ge_pio_copy(submit, &buf, sizeof(buf)); | |
781 | mb(); | |
782 | msleep(1); | |
783 | mb(); | |
784 | i = 0; | |
d93ca2a4 BG |
785 | while (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 9) { |
786 | msleep(1 << i); | |
0da34b6d BG |
787 | i++; |
788 | } | |
789 | if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA) { | |
790 | dev_err(&mgp->pdev->dev, "handoff failed\n"); | |
791 | return -ENXIO; | |
792 | } | |
9a71db72 | 793 | myri10ge_dummy_rdma(mgp, 1); |
fa0a90d9 | 794 | status = myri10ge_get_firmware_capabilities(mgp); |
0da34b6d | 795 | |
fa0a90d9 | 796 | return status; |
0da34b6d BG |
797 | } |
798 | ||
799 | static int myri10ge_update_mac_address(struct myri10ge_priv *mgp, u8 * addr) | |
800 | { | |
801 | struct myri10ge_cmd cmd; | |
802 | int status; | |
803 | ||
804 | cmd.data0 = ((addr[0] << 24) | (addr[1] << 16) | |
805 | | (addr[2] << 8) | addr[3]); | |
806 | ||
807 | cmd.data1 = ((addr[4] << 8) | (addr[5])); | |
808 | ||
809 | status = myri10ge_send_cmd(mgp, MXGEFW_SET_MAC_ADDRESS, &cmd, 0); | |
810 | return status; | |
811 | } | |
812 | ||
813 | static int myri10ge_change_pause(struct myri10ge_priv *mgp, int pause) | |
814 | { | |
815 | struct myri10ge_cmd cmd; | |
816 | int status, ctl; | |
817 | ||
818 | ctl = pause ? MXGEFW_ENABLE_FLOW_CONTROL : MXGEFW_DISABLE_FLOW_CONTROL; | |
819 | status = myri10ge_send_cmd(mgp, ctl, &cmd, 0); | |
820 | ||
821 | if (status) { | |
78ca90ea | 822 | netdev_err(mgp->dev, "Failed to set flow control mode\n"); |
0da34b6d BG |
823 | return status; |
824 | } | |
825 | mgp->pause = pause; | |
826 | return 0; | |
827 | } | |
828 | ||
829 | static void | |
830 | myri10ge_change_promisc(struct myri10ge_priv *mgp, int promisc, int atomic) | |
831 | { | |
832 | struct myri10ge_cmd cmd; | |
833 | int status, ctl; | |
834 | ||
835 | ctl = promisc ? MXGEFW_ENABLE_PROMISC : MXGEFW_DISABLE_PROMISC; | |
836 | status = myri10ge_send_cmd(mgp, ctl, &cmd, atomic); | |
837 | if (status) | |
78ca90ea | 838 | netdev_err(mgp->dev, "Failed to set promisc mode\n"); |
0da34b6d BG |
839 | } |
840 | ||
0d6ac257 | 841 | static int myri10ge_dma_test(struct myri10ge_priv *mgp, int test_type) |
0da34b6d BG |
842 | { |
843 | struct myri10ge_cmd cmd; | |
844 | int status; | |
0da34b6d | 845 | u32 len; |
34fdccea BG |
846 | struct page *dmatest_page; |
847 | dma_addr_t dmatest_bus; | |
0d6ac257 BG |
848 | char *test = " "; |
849 | ||
850 | dmatest_page = alloc_page(GFP_KERNEL); | |
851 | if (!dmatest_page) | |
852 | return -ENOMEM; | |
853 | dmatest_bus = pci_map_page(mgp->pdev, dmatest_page, 0, PAGE_SIZE, | |
854 | DMA_BIDIRECTIONAL); | |
10545937 SG |
855 | if (unlikely(pci_dma_mapping_error(mgp->pdev, dmatest_bus))) { |
856 | __free_page(dmatest_page); | |
857 | return -ENOMEM; | |
858 | } | |
0d6ac257 BG |
859 | |
860 | /* Run a small DMA test. | |
861 | * The magic multipliers to the length tell the firmware | |
862 | * to do DMA read, write, or read+write tests. The | |
863 | * results are returned in cmd.data0. The upper 16 | |
864 | * bits or the return is the number of transfers completed. | |
865 | * The lower 16 bits is the time in 0.5us ticks that the | |
866 | * transfers took to complete. | |
867 | */ | |
868 | ||
b53bef84 | 869 | len = mgp->tx_boundary; |
0d6ac257 BG |
870 | |
871 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus); | |
872 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus); | |
873 | cmd.data2 = len * 0x10000; | |
874 | status = myri10ge_send_cmd(mgp, test_type, &cmd, 0); | |
875 | if (status != 0) { | |
876 | test = "read"; | |
877 | goto abort; | |
878 | } | |
879 | mgp->read_dma = ((cmd.data0 >> 16) * len * 2) / (cmd.data0 & 0xffff); | |
880 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus); | |
881 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus); | |
882 | cmd.data2 = len * 0x1; | |
883 | status = myri10ge_send_cmd(mgp, test_type, &cmd, 0); | |
884 | if (status != 0) { | |
885 | test = "write"; | |
886 | goto abort; | |
887 | } | |
888 | mgp->write_dma = ((cmd.data0 >> 16) * len * 2) / (cmd.data0 & 0xffff); | |
889 | ||
890 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus); | |
891 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus); | |
892 | cmd.data2 = len * 0x10001; | |
893 | status = myri10ge_send_cmd(mgp, test_type, &cmd, 0); | |
894 | if (status != 0) { | |
895 | test = "read/write"; | |
896 | goto abort; | |
897 | } | |
898 | mgp->read_write_dma = ((cmd.data0 >> 16) * len * 2 * 2) / | |
899 | (cmd.data0 & 0xffff); | |
900 | ||
901 | abort: | |
902 | pci_unmap_page(mgp->pdev, dmatest_bus, PAGE_SIZE, DMA_BIDIRECTIONAL); | |
903 | put_page(dmatest_page); | |
904 | ||
905 | if (status != 0 && test_type != MXGEFW_CMD_UNALIGNED_TEST) | |
906 | dev_warn(&mgp->pdev->dev, "DMA %s benchmark failed: %d\n", | |
907 | test, status); | |
908 | ||
909 | return status; | |
910 | } | |
911 | ||
912 | static int myri10ge_reset(struct myri10ge_priv *mgp) | |
913 | { | |
914 | struct myri10ge_cmd cmd; | |
0dcffac1 BG |
915 | struct myri10ge_slice_state *ss; |
916 | int i, status; | |
0d6ac257 | 917 | size_t bytes; |
5dd2d332 | 918 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
919 | unsigned long dca_tag_off; |
920 | #endif | |
0da34b6d BG |
921 | |
922 | /* try to send a reset command to the card to see if it | |
923 | * is alive */ | |
924 | memset(&cmd, 0, sizeof(cmd)); | |
925 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_RESET, &cmd, 0); | |
926 | if (status != 0) { | |
927 | dev_err(&mgp->pdev->dev, "failed reset\n"); | |
928 | return -ENXIO; | |
929 | } | |
0d6ac257 BG |
930 | |
931 | (void)myri10ge_dma_test(mgp, MXGEFW_DMA_TEST); | |
0dcffac1 BG |
932 | /* |
933 | * Use non-ndis mcp_slot (eg, 4 bytes total, | |
934 | * no toeplitz hash value returned. Older firmware will | |
935 | * not understand this command, but will use the correct | |
936 | * sized mcp_slot, so we ignore error returns | |
937 | */ | |
938 | cmd.data0 = MXGEFW_RSS_MCP_SLOT_TYPE_MIN; | |
939 | (void)myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_RSS_MCP_SLOT_TYPE, &cmd, 0); | |
0da34b6d BG |
940 | |
941 | /* Now exchange information about interrupts */ | |
942 | ||
0dcffac1 | 943 | bytes = mgp->max_intr_slots * sizeof(*mgp->ss[0].rx_done.entry); |
0da34b6d BG |
944 | cmd.data0 = (u32) bytes; |
945 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_SIZE, &cmd, 0); | |
0dcffac1 BG |
946 | |
947 | /* | |
948 | * Even though we already know how many slices are supported | |
949 | * via myri10ge_probe_slices() MXGEFW_CMD_GET_MAX_RSS_QUEUES | |
950 | * has magic side effects, and must be called after a reset. | |
951 | * It must be called prior to calling any RSS related cmds, | |
952 | * including assigning an interrupt queue for anything but | |
953 | * slice 0. It must also be called *after* | |
954 | * MXGEFW_CMD_SET_INTRQ_SIZE, since the intrq size is used by | |
955 | * the firmware to compute offsets. | |
956 | */ | |
957 | ||
958 | if (mgp->num_slices > 1) { | |
959 | ||
960 | /* ask the maximum number of slices it supports */ | |
961 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_RSS_QUEUES, | |
962 | &cmd, 0); | |
963 | if (status != 0) { | |
964 | dev_err(&mgp->pdev->dev, | |
965 | "failed to get number of slices\n"); | |
966 | } | |
967 | ||
968 | /* | |
969 | * MXGEFW_CMD_ENABLE_RSS_QUEUES must be called prior | |
970 | * to setting up the interrupt queue DMA | |
971 | */ | |
972 | ||
973 | cmd.data0 = mgp->num_slices; | |
236bb5e6 BG |
974 | cmd.data1 = MXGEFW_SLICE_INTR_MODE_ONE_PER_SLICE; |
975 | if (mgp->dev->real_num_tx_queues > 1) | |
976 | cmd.data1 |= MXGEFW_SLICE_ENABLE_MULTIPLE_TX_QUEUES; | |
0dcffac1 BG |
977 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ENABLE_RSS_QUEUES, |
978 | &cmd, 0); | |
236bb5e6 BG |
979 | |
980 | /* Firmware older than 1.4.32 only supports multiple | |
981 | * RX queues, so if we get an error, first retry using a | |
982 | * single TX queue before giving up */ | |
983 | if (status != 0 && mgp->dev->real_num_tx_queues > 1) { | |
c9920268 | 984 | netif_set_real_num_tx_queues(mgp->dev, 1); |
236bb5e6 BG |
985 | cmd.data0 = mgp->num_slices; |
986 | cmd.data1 = MXGEFW_SLICE_INTR_MODE_ONE_PER_SLICE; | |
987 | status = myri10ge_send_cmd(mgp, | |
988 | MXGEFW_CMD_ENABLE_RSS_QUEUES, | |
989 | &cmd, 0); | |
990 | } | |
991 | ||
0dcffac1 BG |
992 | if (status != 0) { |
993 | dev_err(&mgp->pdev->dev, | |
994 | "failed to set number of slices\n"); | |
995 | ||
996 | return status; | |
997 | } | |
998 | } | |
999 | for (i = 0; i < mgp->num_slices; i++) { | |
1000 | ss = &mgp->ss[i]; | |
1001 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(ss->rx_done.bus); | |
1002 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(ss->rx_done.bus); | |
1003 | cmd.data2 = i; | |
1004 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_DMA, | |
1005 | &cmd, 0); | |
6403eab1 | 1006 | } |
0da34b6d BG |
1007 | |
1008 | status |= | |
1009 | myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_ACK_OFFSET, &cmd, 0); | |
0dcffac1 BG |
1010 | for (i = 0; i < mgp->num_slices; i++) { |
1011 | ss = &mgp->ss[i]; | |
1012 | ss->irq_claim = | |
1013 | (__iomem __be32 *) (mgp->sram + cmd.data0 + 8 * i); | |
1014 | } | |
df30a740 BG |
1015 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_DEASSERT_OFFSET, |
1016 | &cmd, 0); | |
1017 | mgp->irq_deassert = (__iomem __be32 *) (mgp->sram + cmd.data0); | |
0da34b6d | 1018 | |
0da34b6d BG |
1019 | status |= myri10ge_send_cmd |
1020 | (mgp, MXGEFW_CMD_GET_INTR_COAL_DELAY_OFFSET, &cmd, 0); | |
40f6cff5 | 1021 | mgp->intr_coal_delay_ptr = (__iomem __be32 *) (mgp->sram + cmd.data0); |
0da34b6d BG |
1022 | if (status != 0) { |
1023 | dev_err(&mgp->pdev->dev, "failed set interrupt parameters\n"); | |
1024 | return status; | |
1025 | } | |
40f6cff5 | 1026 | put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr); |
0da34b6d | 1027 | |
5dd2d332 | 1028 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
1029 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_DCA_OFFSET, &cmd, 0); |
1030 | dca_tag_off = cmd.data0; | |
1031 | for (i = 0; i < mgp->num_slices; i++) { | |
1032 | ss = &mgp->ss[i]; | |
1033 | if (status == 0) { | |
1034 | ss->dca_tag = (__iomem __be32 *) | |
1035 | (mgp->sram + dca_tag_off + 4 * i); | |
1036 | } else { | |
1037 | ss->dca_tag = NULL; | |
1038 | } | |
1039 | } | |
4ee2ac51 | 1040 | #endif /* CONFIG_MYRI10GE_DCA */ |
981813d8 | 1041 | |
0da34b6d | 1042 | /* reset mcp/driver shared state back to 0 */ |
0dcffac1 | 1043 | |
c58ac5ca | 1044 | mgp->link_changes = 0; |
0dcffac1 BG |
1045 | for (i = 0; i < mgp->num_slices; i++) { |
1046 | ss = &mgp->ss[i]; | |
1047 | ||
1048 | memset(ss->rx_done.entry, 0, bytes); | |
1049 | ss->tx.req = 0; | |
1050 | ss->tx.done = 0; | |
1051 | ss->tx.pkt_start = 0; | |
1052 | ss->tx.pkt_done = 0; | |
1053 | ss->rx_big.cnt = 0; | |
1054 | ss->rx_small.cnt = 0; | |
1055 | ss->rx_done.idx = 0; | |
1056 | ss->rx_done.cnt = 0; | |
1057 | ss->tx.wake_queue = 0; | |
1058 | ss->tx.stop_queue = 0; | |
1059 | } | |
1060 | ||
0da34b6d | 1061 | status = myri10ge_update_mac_address(mgp, mgp->dev->dev_addr); |
0da34b6d | 1062 | myri10ge_change_pause(mgp, mgp->pause); |
2f76216f | 1063 | myri10ge_set_multicast_list(mgp->dev); |
0da34b6d BG |
1064 | return status; |
1065 | } | |
1066 | ||
5dd2d332 | 1067 | #ifdef CONFIG_MYRI10GE_DCA |
ef09aadf AG |
1068 | static int myri10ge_toggle_relaxed(struct pci_dev *pdev, int on) |
1069 | { | |
9503e255 | 1070 | int ret; |
ef09aadf AG |
1071 | u16 ctl; |
1072 | ||
9503e255 | 1073 | pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &ctl); |
b3b6ae2c | 1074 | |
ef09aadf AG |
1075 | ret = (ctl & PCI_EXP_DEVCTL_RELAX_EN) >> 4; |
1076 | if (ret != on) { | |
1077 | ctl &= ~PCI_EXP_DEVCTL_RELAX_EN; | |
1078 | ctl |= (on << 4); | |
9503e255 | 1079 | pcie_capability_write_word(pdev, PCI_EXP_DEVCTL, ctl); |
ef09aadf AG |
1080 | } |
1081 | return ret; | |
1082 | } | |
1083 | ||
981813d8 BG |
1084 | static void |
1085 | myri10ge_write_dca(struct myri10ge_slice_state *ss, int cpu, int tag) | |
1086 | { | |
981813d8 BG |
1087 | ss->cached_dca_tag = tag; |
1088 | put_be32(htonl(tag), ss->dca_tag); | |
1089 | } | |
1090 | ||
1091 | static inline void myri10ge_update_dca(struct myri10ge_slice_state *ss) | |
1092 | { | |
1093 | int cpu = get_cpu(); | |
1094 | int tag; | |
1095 | ||
1096 | if (cpu != ss->cpu) { | |
ef09aadf | 1097 | tag = dca3_get_tag(&ss->mgp->pdev->dev, cpu); |
981813d8 BG |
1098 | if (ss->cached_dca_tag != tag) |
1099 | myri10ge_write_dca(ss, cpu, tag); | |
ef09aadf | 1100 | ss->cpu = cpu; |
981813d8 BG |
1101 | } |
1102 | put_cpu(); | |
1103 | } | |
1104 | ||
1105 | static void myri10ge_setup_dca(struct myri10ge_priv *mgp) | |
1106 | { | |
1107 | int err, i; | |
1108 | struct pci_dev *pdev = mgp->pdev; | |
1109 | ||
1110 | if (mgp->ss[0].dca_tag == NULL || mgp->dca_enabled) | |
1111 | return; | |
1112 | if (!myri10ge_dca) { | |
1113 | dev_err(&pdev->dev, "dca disabled by administrator\n"); | |
1114 | return; | |
1115 | } | |
1116 | err = dca_add_requester(&pdev->dev); | |
1117 | if (err) { | |
330554cb BG |
1118 | if (err != -ENODEV) |
1119 | dev_err(&pdev->dev, | |
1120 | "dca_add_requester() failed, err=%d\n", err); | |
981813d8 BG |
1121 | return; |
1122 | } | |
ef09aadf | 1123 | mgp->relaxed_order = myri10ge_toggle_relaxed(pdev, 0); |
981813d8 | 1124 | mgp->dca_enabled = 1; |
ef09aadf AG |
1125 | for (i = 0; i < mgp->num_slices; i++) { |
1126 | mgp->ss[i].cpu = -1; | |
1127 | mgp->ss[i].cached_dca_tag = -1; | |
1128 | myri10ge_update_dca(&mgp->ss[i]); | |
b3b6ae2c | 1129 | } |
981813d8 BG |
1130 | } |
1131 | ||
1132 | static void myri10ge_teardown_dca(struct myri10ge_priv *mgp) | |
1133 | { | |
1134 | struct pci_dev *pdev = mgp->pdev; | |
981813d8 BG |
1135 | |
1136 | if (!mgp->dca_enabled) | |
1137 | return; | |
1138 | mgp->dca_enabled = 0; | |
ef09aadf AG |
1139 | if (mgp->relaxed_order) |
1140 | myri10ge_toggle_relaxed(pdev, 1); | |
b3b6ae2c | 1141 | dca_remove_requester(&pdev->dev); |
981813d8 BG |
1142 | } |
1143 | ||
1144 | static int myri10ge_notify_dca_device(struct device *dev, void *data) | |
1145 | { | |
1146 | struct myri10ge_priv *mgp; | |
1147 | unsigned long event; | |
1148 | ||
1149 | mgp = dev_get_drvdata(dev); | |
1150 | event = *(unsigned long *)data; | |
1151 | ||
1152 | if (event == DCA_PROVIDER_ADD) | |
1153 | myri10ge_setup_dca(mgp); | |
1154 | else if (event == DCA_PROVIDER_REMOVE) | |
1155 | myri10ge_teardown_dca(mgp); | |
1156 | return 0; | |
1157 | } | |
4ee2ac51 | 1158 | #endif /* CONFIG_MYRI10GE_DCA */ |
981813d8 | 1159 | |
0da34b6d BG |
1160 | static inline void |
1161 | myri10ge_submit_8rx(struct mcp_kreq_ether_recv __iomem * dst, | |
1162 | struct mcp_kreq_ether_recv *src) | |
1163 | { | |
40f6cff5 | 1164 | __be32 low; |
0da34b6d BG |
1165 | |
1166 | low = src->addr_low; | |
284901a9 | 1167 | src->addr_low = htonl(DMA_BIT_MASK(32)); |
e67bda55 BG |
1168 | myri10ge_pio_copy(dst, src, 4 * sizeof(*src)); |
1169 | mb(); | |
1170 | myri10ge_pio_copy(dst + 4, src + 4, 4 * sizeof(*src)); | |
0da34b6d BG |
1171 | mb(); |
1172 | src->addr_low = low; | |
40f6cff5 | 1173 | put_be32(low, &dst->addr_low); |
0da34b6d BG |
1174 | mb(); |
1175 | } | |
1176 | ||
40f6cff5 | 1177 | static inline void myri10ge_vlan_ip_csum(struct sk_buff *skb, __wsum hw_csum) |
0da34b6d BG |
1178 | { |
1179 | struct vlan_hdr *vh = (struct vlan_hdr *)(skb->data); | |
1180 | ||
40f6cff5 | 1181 | if ((skb->protocol == htons(ETH_P_8021Q)) && |
0da34b6d BG |
1182 | (vh->h_vlan_encapsulated_proto == htons(ETH_P_IP) || |
1183 | vh->h_vlan_encapsulated_proto == htons(ETH_P_IPV6))) { | |
1184 | skb->csum = hw_csum; | |
84fa7933 | 1185 | skb->ip_summed = CHECKSUM_COMPLETE; |
0da34b6d BG |
1186 | } |
1187 | } | |
1188 | ||
dd50f336 BG |
1189 | static void |
1190 | myri10ge_alloc_rx_pages(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx, | |
1191 | int bytes, int watchdog) | |
1192 | { | |
1193 | struct page *page; | |
10545937 | 1194 | dma_addr_t bus; |
dd50f336 | 1195 | int idx; |
2a3f2790 BG |
1196 | #if MYRI10GE_ALLOC_SIZE > 4096 |
1197 | int end_offset; | |
1198 | #endif | |
dd50f336 BG |
1199 | |
1200 | if (unlikely(rx->watchdog_needed && !watchdog)) | |
1201 | return; | |
1202 | ||
1203 | /* try to refill entire ring */ | |
1204 | while (rx->fill_cnt != (rx->cnt + rx->mask + 1)) { | |
1205 | idx = rx->fill_cnt & rx->mask; | |
ae8509b1 | 1206 | if (rx->page_offset + bytes <= MYRI10GE_ALLOC_SIZE) { |
dd50f336 BG |
1207 | /* we can use part of previous page */ |
1208 | get_page(rx->page); | |
1209 | } else { | |
1210 | /* we need a new page */ | |
1211 | page = | |
1212 | alloc_pages(GFP_ATOMIC | __GFP_COMP, | |
1213 | MYRI10GE_ALLOC_ORDER); | |
1214 | if (unlikely(page == NULL)) { | |
1215 | if (rx->fill_cnt - rx->cnt < 16) | |
1216 | rx->watchdog_needed = 1; | |
1217 | return; | |
1218 | } | |
10545937 SG |
1219 | |
1220 | bus = pci_map_page(mgp->pdev, page, 0, | |
1221 | MYRI10GE_ALLOC_SIZE, | |
1222 | PCI_DMA_FROMDEVICE); | |
1223 | if (unlikely(pci_dma_mapping_error(mgp->pdev, bus))) { | |
1224 | __free_pages(page, MYRI10GE_ALLOC_ORDER); | |
1225 | if (rx->fill_cnt - rx->cnt < 16) | |
1226 | rx->watchdog_needed = 1; | |
1227 | return; | |
1228 | } | |
1229 | ||
dd50f336 BG |
1230 | rx->page = page; |
1231 | rx->page_offset = 0; | |
10545937 SG |
1232 | rx->bus = bus; |
1233 | ||
dd50f336 BG |
1234 | } |
1235 | rx->info[idx].page = rx->page; | |
1236 | rx->info[idx].page_offset = rx->page_offset; | |
1237 | /* note that this is the address of the start of the | |
1238 | * page */ | |
c755b4b6 | 1239 | dma_unmap_addr_set(&rx->info[idx], bus, rx->bus); |
dd50f336 BG |
1240 | rx->shadow[idx].addr_low = |
1241 | htonl(MYRI10GE_LOWPART_TO_U32(rx->bus) + rx->page_offset); | |
1242 | rx->shadow[idx].addr_high = | |
1243 | htonl(MYRI10GE_HIGHPART_TO_U32(rx->bus)); | |
1244 | ||
1245 | /* start next packet on a cacheline boundary */ | |
1246 | rx->page_offset += SKB_DATA_ALIGN(bytes); | |
ae8509b1 BG |
1247 | |
1248 | #if MYRI10GE_ALLOC_SIZE > 4096 | |
1249 | /* don't cross a 4KB boundary */ | |
2a3f2790 BG |
1250 | end_offset = rx->page_offset + bytes - 1; |
1251 | if ((unsigned)(rx->page_offset ^ end_offset) > 4095) | |
1252 | rx->page_offset = end_offset & ~4095; | |
ae8509b1 | 1253 | #endif |
dd50f336 BG |
1254 | rx->fill_cnt++; |
1255 | ||
1256 | /* copy 8 descriptors to the firmware at a time */ | |
1257 | if ((idx & 7) == 7) { | |
e454e7e2 BG |
1258 | myri10ge_submit_8rx(&rx->lanai[idx - 7], |
1259 | &rx->shadow[idx - 7]); | |
dd50f336 BG |
1260 | } |
1261 | } | |
1262 | } | |
1263 | ||
1264 | static inline void | |
1265 | myri10ge_unmap_rx_page(struct pci_dev *pdev, | |
1266 | struct myri10ge_rx_buffer_state *info, int bytes) | |
1267 | { | |
1268 | /* unmap the recvd page if we're the only or last user of it */ | |
1269 | if (bytes >= MYRI10GE_ALLOC_SIZE / 2 || | |
1270 | (info->page_offset + 2 * bytes) > MYRI10GE_ALLOC_SIZE) { | |
c755b4b6 | 1271 | pci_unmap_page(pdev, (dma_unmap_addr(info, bus) |
dd50f336 BG |
1272 | & ~(MYRI10GE_ALLOC_SIZE - 1)), |
1273 | MYRI10GE_ALLOC_SIZE, PCI_DMA_FROMDEVICE); | |
1274 | } | |
1275 | } | |
1276 | ||
1b4c44e6 AG |
1277 | /* |
1278 | * GRO does not support acceleration of tagged vlan frames, and | |
1279 | * this NIC does not support vlan tag offload, so we must pop | |
1280 | * the tag ourselves to be able to achieve GRO performance that | |
1281 | * is comparable to LRO. | |
1282 | */ | |
1283 | ||
1284 | static inline void | |
1285 | myri10ge_vlan_rx(struct net_device *dev, void *addr, struct sk_buff *skb) | |
1286 | { | |
1287 | u8 *va; | |
1288 | struct vlan_ethhdr *veh; | |
1289 | struct skb_frag_struct *frag; | |
1290 | __wsum vsum; | |
1291 | ||
1292 | va = addr; | |
1293 | va += MXGEFW_PAD; | |
1294 | veh = (struct vlan_ethhdr *)va; | |
f646968f PM |
1295 | if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) == |
1296 | NETIF_F_HW_VLAN_CTAG_RX && | |
30828d2b | 1297 | veh->h_vlan_proto == htons(ETH_P_8021Q)) { |
1b4c44e6 AG |
1298 | /* fixup csum if needed */ |
1299 | if (skb->ip_summed == CHECKSUM_COMPLETE) { | |
1300 | vsum = csum_partial(va + ETH_HLEN, VLAN_HLEN, 0); | |
1301 | skb->csum = csum_sub(skb->csum, vsum); | |
1302 | } | |
1303 | /* pop tag */ | |
86a9bad3 | 1304 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ntohs(veh->h_vlan_TCI)); |
1b4c44e6 AG |
1305 | memmove(va + VLAN_HLEN, va, 2 * ETH_ALEN); |
1306 | skb->len -= VLAN_HLEN; | |
1307 | skb->data_len -= VLAN_HLEN; | |
1308 | frag = skb_shinfo(skb)->frags; | |
1309 | frag->page_offset += VLAN_HLEN; | |
1310 | skb_frag_size_set(frag, skb_frag_size(frag) - VLAN_HLEN); | |
1311 | } | |
1312 | } | |
1313 | ||
0dde8026 HYK |
1314 | #define MYRI10GE_HLEN 64 /* Bytes to copy from page to skb linear memory */ |
1315 | ||
dd50f336 | 1316 | static inline int |
4ca3221f | 1317 | myri10ge_rx_done(struct myri10ge_slice_state *ss, int len, __wsum csum) |
dd50f336 | 1318 | { |
b53bef84 | 1319 | struct myri10ge_priv *mgp = ss->mgp; |
dd50f336 | 1320 | struct sk_buff *skb; |
4ca3221f | 1321 | struct skb_frag_struct *rx_frags; |
b3cd9657 | 1322 | struct myri10ge_rx_buf *rx; |
4ca3221f | 1323 | int i, idx, remainder, bytes; |
dd50f336 BG |
1324 | struct pci_dev *pdev = mgp->pdev; |
1325 | struct net_device *dev = mgp->dev; | |
1326 | u8 *va; | |
1327 | ||
b3cd9657 SG |
1328 | if (len <= mgp->small_bytes) { |
1329 | rx = &ss->rx_small; | |
1330 | bytes = mgp->small_bytes; | |
1331 | } else { | |
1332 | rx = &ss->rx_big; | |
1333 | bytes = mgp->big_bytes; | |
1334 | } | |
1335 | ||
dd50f336 BG |
1336 | len += MXGEFW_PAD; |
1337 | idx = rx->cnt & rx->mask; | |
1338 | va = page_address(rx->info[idx].page) + rx->info[idx].page_offset; | |
1339 | prefetch(va); | |
4ca3221f | 1340 | |
362108b5 | 1341 | skb = napi_get_frags(&ss->napi); |
4ca3221f AG |
1342 | if (unlikely(skb == NULL)) { |
1343 | ss->stats.rx_dropped++; | |
1344 | for (i = 0, remainder = len; remainder > 0; i++) { | |
1345 | myri10ge_unmap_rx_page(pdev, &rx->info[idx], bytes); | |
1346 | put_page(rx->info[idx].page); | |
1347 | rx->cnt++; | |
1348 | idx = rx->cnt & rx->mask; | |
1349 | remainder -= MYRI10GE_ALLOC_SIZE; | |
1350 | } | |
1351 | return 0; | |
1352 | } | |
1353 | rx_frags = skb_shinfo(skb)->frags; | |
dd50f336 BG |
1354 | /* Fill skb_frag_struct(s) with data from our receive */ |
1355 | for (i = 0, remainder = len; remainder > 0; i++) { | |
1356 | myri10ge_unmap_rx_page(pdev, &rx->info[idx], bytes); | |
4ca3221f AG |
1357 | skb_fill_page_desc(skb, i, rx->info[idx].page, |
1358 | rx->info[idx].page_offset, | |
1359 | remainder < MYRI10GE_ALLOC_SIZE ? | |
1360 | remainder : MYRI10GE_ALLOC_SIZE); | |
dd50f336 BG |
1361 | rx->cnt++; |
1362 | idx = rx->cnt & rx->mask; | |
1363 | remainder -= MYRI10GE_ALLOC_SIZE; | |
1364 | } | |
1365 | ||
4ca3221f AG |
1366 | /* remove padding */ |
1367 | rx_frags[0].page_offset += MXGEFW_PAD; | |
1368 | rx_frags[0].size -= MXGEFW_PAD; | |
1369 | len -= MXGEFW_PAD; | |
dd50f336 | 1370 | |
4ca3221f AG |
1371 | skb->len = len; |
1372 | skb->data_len = len; | |
1373 | skb->truesize += len; | |
1374 | if (dev->features & NETIF_F_RXCSUM) { | |
1375 | skb->ip_summed = CHECKSUM_COMPLETE; | |
1376 | skb->csum = csum; | |
dd50f336 | 1377 | } |
1b4c44e6 | 1378 | myri10ge_vlan_rx(mgp->dev, va, skb); |
0c8dfc83 | 1379 | skb_record_rx_queue(skb, ss - &mgp->ss[0]); |
0dde8026 | 1380 | |
362108b5 | 1381 | napi_gro_frags(&ss->napi); |
dd50f336 | 1382 | |
dd50f336 BG |
1383 | return 1; |
1384 | } | |
1385 | ||
b53bef84 BG |
1386 | static inline void |
1387 | myri10ge_tx_done(struct myri10ge_slice_state *ss, int mcp_index) | |
0da34b6d | 1388 | { |
b53bef84 BG |
1389 | struct pci_dev *pdev = ss->mgp->pdev; |
1390 | struct myri10ge_tx_buf *tx = &ss->tx; | |
236bb5e6 | 1391 | struct netdev_queue *dev_queue; |
0da34b6d BG |
1392 | struct sk_buff *skb; |
1393 | int idx, len; | |
0da34b6d BG |
1394 | |
1395 | while (tx->pkt_done != mcp_index) { | |
1396 | idx = tx->done & tx->mask; | |
1397 | skb = tx->info[idx].skb; | |
1398 | ||
1399 | /* Mark as free */ | |
1400 | tx->info[idx].skb = NULL; | |
1401 | if (tx->info[idx].last) { | |
1402 | tx->pkt_done++; | |
1403 | tx->info[idx].last = 0; | |
1404 | } | |
1405 | tx->done++; | |
c755b4b6 FT |
1406 | len = dma_unmap_len(&tx->info[idx], len); |
1407 | dma_unmap_len_set(&tx->info[idx], len, 0); | |
0da34b6d | 1408 | if (skb) { |
b53bef84 BG |
1409 | ss->stats.tx_bytes += skb->len; |
1410 | ss->stats.tx_packets++; | |
5fbc136b | 1411 | dev_consume_skb_irq(skb); |
0da34b6d BG |
1412 | if (len) |
1413 | pci_unmap_single(pdev, | |
c755b4b6 | 1414 | dma_unmap_addr(&tx->info[idx], |
0da34b6d BG |
1415 | bus), len, |
1416 | PCI_DMA_TODEVICE); | |
1417 | } else { | |
1418 | if (len) | |
1419 | pci_unmap_page(pdev, | |
c755b4b6 | 1420 | dma_unmap_addr(&tx->info[idx], |
0da34b6d BG |
1421 | bus), len, |
1422 | PCI_DMA_TODEVICE); | |
1423 | } | |
0da34b6d | 1424 | } |
236bb5e6 BG |
1425 | |
1426 | dev_queue = netdev_get_tx_queue(ss->dev, ss - ss->mgp->ss); | |
1427 | /* | |
1428 | * Make a minimal effort to prevent the NIC from polling an | |
1429 | * idle tx queue. If we can't get the lock we leave the queue | |
1430 | * active. In this case, either a thread was about to start | |
1431 | * using the queue anyway, or we lost a race and the NIC will | |
1432 | * waste some of its resources polling an inactive queue for a | |
1433 | * while. | |
1434 | */ | |
1435 | ||
1436 | if ((ss->mgp->dev->real_num_tx_queues > 1) && | |
1437 | __netif_tx_trylock(dev_queue)) { | |
1438 | if (tx->req == tx->done) { | |
1439 | tx->queue_active = 0; | |
1440 | put_be32(htonl(1), tx->send_stop); | |
8c2f5fa5 | 1441 | mb(); |
236bb5e6 BG |
1442 | } |
1443 | __netif_tx_unlock(dev_queue); | |
1444 | } | |
1445 | ||
0da34b6d | 1446 | /* start the queue if we've stopped it */ |
8e95a202 | 1447 | if (netif_tx_queue_stopped(dev_queue) && |
3b20b2dc JM |
1448 | tx->req - tx->done < (tx->mask >> 1) && |
1449 | ss->mgp->running == MYRI10GE_ETH_RUNNING) { | |
b53bef84 | 1450 | tx->wake_queue++; |
236bb5e6 | 1451 | netif_tx_wake_queue(dev_queue); |
0da34b6d BG |
1452 | } |
1453 | } | |
1454 | ||
b53bef84 BG |
1455 | static inline int |
1456 | myri10ge_clean_rx_done(struct myri10ge_slice_state *ss, int budget) | |
0da34b6d | 1457 | { |
b53bef84 BG |
1458 | struct myri10ge_rx_done *rx_done = &ss->rx_done; |
1459 | struct myri10ge_priv *mgp = ss->mgp; | |
0da34b6d BG |
1460 | unsigned long rx_bytes = 0; |
1461 | unsigned long rx_packets = 0; | |
1462 | unsigned long rx_ok; | |
0da34b6d BG |
1463 | int idx = rx_done->idx; |
1464 | int cnt = rx_done->cnt; | |
bea3348e | 1465 | int work_done = 0; |
0da34b6d | 1466 | u16 length; |
40f6cff5 | 1467 | __wsum checksum; |
0da34b6d | 1468 | |
c956a240 | 1469 | while (rx_done->entry[idx].length != 0 && work_done < budget) { |
0da34b6d BG |
1470 | length = ntohs(rx_done->entry[idx].length); |
1471 | rx_done->entry[idx].length = 0; | |
40f6cff5 | 1472 | checksum = csum_unfold(rx_done->entry[idx].checksum); |
4ca3221f | 1473 | rx_ok = myri10ge_rx_done(ss, length, checksum); |
0da34b6d BG |
1474 | rx_packets += rx_ok; |
1475 | rx_bytes += rx_ok * (unsigned long)length; | |
1476 | cnt++; | |
014377a1 | 1477 | idx = cnt & (mgp->max_intr_slots - 1); |
c956a240 | 1478 | work_done++; |
0da34b6d BG |
1479 | } |
1480 | rx_done->idx = idx; | |
1481 | rx_done->cnt = cnt; | |
b53bef84 BG |
1482 | ss->stats.rx_packets += rx_packets; |
1483 | ss->stats.rx_bytes += rx_bytes; | |
c7dab99b BG |
1484 | |
1485 | /* restock receive rings if needed */ | |
b53bef84 BG |
1486 | if (ss->rx_small.fill_cnt - ss->rx_small.cnt < myri10ge_fill_thresh) |
1487 | myri10ge_alloc_rx_pages(mgp, &ss->rx_small, | |
c7dab99b | 1488 | mgp->small_bytes + MXGEFW_PAD, 0); |
b53bef84 BG |
1489 | if (ss->rx_big.fill_cnt - ss->rx_big.cnt < myri10ge_fill_thresh) |
1490 | myri10ge_alloc_rx_pages(mgp, &ss->rx_big, mgp->big_bytes, 0); | |
c7dab99b | 1491 | |
bea3348e | 1492 | return work_done; |
0da34b6d BG |
1493 | } |
1494 | ||
1495 | static inline void myri10ge_check_statblock(struct myri10ge_priv *mgp) | |
1496 | { | |
0dcffac1 | 1497 | struct mcp_irq_data *stats = mgp->ss[0].fw_stats; |
0da34b6d BG |
1498 | |
1499 | if (unlikely(stats->stats_updated)) { | |
798a95db BG |
1500 | unsigned link_up = ntohl(stats->link_up); |
1501 | if (mgp->link_state != link_up) { | |
1502 | mgp->link_state = link_up; | |
1503 | ||
1504 | if (mgp->link_state == MXGEFW_LINK_UP) { | |
b3b6ae2c | 1505 | netif_info(mgp, link, mgp->dev, "link up\n"); |
0da34b6d | 1506 | netif_carrier_on(mgp->dev); |
c58ac5ca | 1507 | mgp->link_changes++; |
0da34b6d | 1508 | } else { |
b3b6ae2c JM |
1509 | netif_info(mgp, link, mgp->dev, "link %s\n", |
1510 | (link_up == MXGEFW_LINK_MYRINET ? | |
78ca90ea | 1511 | "mismatch (Myrinet detected)" : |
b3b6ae2c | 1512 | "down")); |
0da34b6d | 1513 | netif_carrier_off(mgp->dev); |
c58ac5ca | 1514 | mgp->link_changes++; |
0da34b6d BG |
1515 | } |
1516 | } | |
1517 | if (mgp->rdma_tags_available != | |
b53bef84 | 1518 | ntohl(stats->rdma_tags_available)) { |
0da34b6d | 1519 | mgp->rdma_tags_available = |
b53bef84 | 1520 | ntohl(stats->rdma_tags_available); |
78ca90ea JP |
1521 | netdev_warn(mgp->dev, "RDMA timed out! %d tags left\n", |
1522 | mgp->rdma_tags_available); | |
0da34b6d BG |
1523 | } |
1524 | mgp->down_cnt += stats->link_down; | |
1525 | if (stats->link_down) | |
1526 | wake_up(&mgp->down_wq); | |
1527 | } | |
1528 | } | |
1529 | ||
bea3348e | 1530 | static int myri10ge_poll(struct napi_struct *napi, int budget) |
0da34b6d | 1531 | { |
b53bef84 BG |
1532 | struct myri10ge_slice_state *ss = |
1533 | container_of(napi, struct myri10ge_slice_state, napi); | |
bea3348e | 1534 | int work_done; |
0da34b6d | 1535 | |
5dd2d332 | 1536 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
1537 | if (ss->mgp->dca_enabled) |
1538 | myri10ge_update_dca(ss); | |
1539 | #endif | |
0da34b6d | 1540 | /* process as many rx events as NAPI will allow */ |
b53bef84 | 1541 | work_done = myri10ge_clean_rx_done(ss, budget); |
0da34b6d | 1542 | |
4ec24119 | 1543 | if (work_done < budget) { |
6ad20165 | 1544 | napi_complete_done(napi, work_done); |
b53bef84 | 1545 | put_be32(htonl(3), ss->irq_claim); |
0da34b6d | 1546 | } |
bea3348e | 1547 | return work_done; |
0da34b6d BG |
1548 | } |
1549 | ||
7d12e780 | 1550 | static irqreturn_t myri10ge_intr(int irq, void *arg) |
0da34b6d | 1551 | { |
b53bef84 BG |
1552 | struct myri10ge_slice_state *ss = arg; |
1553 | struct myri10ge_priv *mgp = ss->mgp; | |
1554 | struct mcp_irq_data *stats = ss->fw_stats; | |
1555 | struct myri10ge_tx_buf *tx = &ss->tx; | |
0da34b6d BG |
1556 | u32 send_done_count; |
1557 | int i; | |
1558 | ||
236bb5e6 BG |
1559 | /* an interrupt on a non-zero receive-only slice is implicitly |
1560 | * valid since MSI-X irqs are not shared */ | |
1561 | if ((mgp->dev->real_num_tx_queues == 1) && (ss != mgp->ss)) { | |
288379f0 | 1562 | napi_schedule(&ss->napi); |
807540ba | 1563 | return IRQ_HANDLED; |
0dcffac1 BG |
1564 | } |
1565 | ||
0da34b6d BG |
1566 | /* make sure it is our IRQ, and that the DMA has finished */ |
1567 | if (unlikely(!stats->valid)) | |
807540ba | 1568 | return IRQ_NONE; |
0da34b6d BG |
1569 | |
1570 | /* low bit indicates receives are present, so schedule | |
1571 | * napi poll handler */ | |
1572 | if (stats->valid & 1) | |
288379f0 | 1573 | napi_schedule(&ss->napi); |
0da34b6d | 1574 | |
0dcffac1 | 1575 | if (!mgp->msi_enabled && !mgp->msix_enabled) { |
40f6cff5 | 1576 | put_be32(0, mgp->irq_deassert); |
0da34b6d BG |
1577 | if (!myri10ge_deassert_wait) |
1578 | stats->valid = 0; | |
1579 | mb(); | |
1580 | } else | |
1581 | stats->valid = 0; | |
1582 | ||
1583 | /* Wait for IRQ line to go low, if using INTx */ | |
1584 | i = 0; | |
1585 | while (1) { | |
1586 | i++; | |
1587 | /* check for transmit completes and receives */ | |
1588 | send_done_count = ntohl(stats->send_done_count); | |
1589 | if (send_done_count != tx->pkt_done) | |
b53bef84 | 1590 | myri10ge_tx_done(ss, (int)send_done_count); |
0da34b6d | 1591 | if (unlikely(i > myri10ge_max_irq_loops)) { |
b3b6ae2c | 1592 | netdev_warn(mgp->dev, "irq stuck?\n"); |
0da34b6d BG |
1593 | stats->valid = 0; |
1594 | schedule_work(&mgp->watchdog_work); | |
1595 | } | |
1596 | if (likely(stats->valid == 0)) | |
1597 | break; | |
1598 | cpu_relax(); | |
1599 | barrier(); | |
1600 | } | |
1601 | ||
236bb5e6 BG |
1602 | /* Only slice 0 updates stats */ |
1603 | if (ss == mgp->ss) | |
1604 | myri10ge_check_statblock(mgp); | |
0da34b6d | 1605 | |
b53bef84 | 1606 | put_be32(htonl(3), ss->irq_claim + 1); |
807540ba | 1607 | return IRQ_HANDLED; |
0da34b6d BG |
1608 | } |
1609 | ||
1610 | static int | |
cf901656 PR |
1611 | myri10ge_get_link_ksettings(struct net_device *netdev, |
1612 | struct ethtool_link_ksettings *cmd) | |
0da34b6d | 1613 | { |
c0bf8801 BG |
1614 | struct myri10ge_priv *mgp = netdev_priv(netdev); |
1615 | char *ptr; | |
1616 | int i; | |
1617 | ||
cf901656 PR |
1618 | cmd->base.autoneg = AUTONEG_DISABLE; |
1619 | cmd->base.speed = SPEED_10000; | |
1620 | cmd->base.duplex = DUPLEX_FULL; | |
c0bf8801 BG |
1621 | |
1622 | /* | |
1623 | * parse the product code to deterimine the interface type | |
1624 | * (CX4, XFP, Quad Ribbon Fiber) by looking at the character | |
1625 | * after the 3rd dash in the driver's cached copy of the | |
1626 | * EEPROM's product code string. | |
1627 | */ | |
1628 | ptr = mgp->product_code_string; | |
1629 | if (ptr == NULL) { | |
78ca90ea | 1630 | netdev_err(netdev, "Missing product code\n"); |
c0bf8801 BG |
1631 | return 0; |
1632 | } | |
1633 | for (i = 0; i < 3; i++, ptr++) { | |
1634 | ptr = strchr(ptr, '-'); | |
1635 | if (ptr == NULL) { | |
78ca90ea JP |
1636 | netdev_err(netdev, "Invalid product code %s\n", |
1637 | mgp->product_code_string); | |
c0bf8801 BG |
1638 | return 0; |
1639 | } | |
1640 | } | |
196f17eb BG |
1641 | if (*ptr == '2') |
1642 | ptr++; | |
1643 | if (*ptr == 'R' || *ptr == 'Q' || *ptr == 'S') { | |
1644 | /* We've found either an XFP, quad ribbon fiber, or SFP+ */ | |
cf901656 PR |
1645 | cmd->base.port = PORT_FIBRE; |
1646 | ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); | |
1647 | ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); | |
196f17eb | 1648 | } else { |
cf901656 | 1649 | cmd->base.port = PORT_OTHER; |
c0bf8801 | 1650 | } |
196f17eb | 1651 | |
0da34b6d BG |
1652 | return 0; |
1653 | } | |
1654 | ||
1655 | static void | |
1656 | myri10ge_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) | |
1657 | { | |
1658 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1659 | ||
1660 | strlcpy(info->driver, "myri10ge", sizeof(info->driver)); | |
1661 | strlcpy(info->version, MYRI10GE_VERSION_STR, sizeof(info->version)); | |
1662 | strlcpy(info->fw_version, mgp->fw_version, sizeof(info->fw_version)); | |
1663 | strlcpy(info->bus_info, pci_name(mgp->pdev), sizeof(info->bus_info)); | |
1664 | } | |
1665 | ||
1666 | static int | |
1667 | myri10ge_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal) | |
1668 | { | |
1669 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
99f5f87e | 1670 | |
0da34b6d BG |
1671 | coal->rx_coalesce_usecs = mgp->intr_coal_delay; |
1672 | return 0; | |
1673 | } | |
1674 | ||
1675 | static int | |
1676 | myri10ge_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal) | |
1677 | { | |
1678 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1679 | ||
1680 | mgp->intr_coal_delay = coal->rx_coalesce_usecs; | |
40f6cff5 | 1681 | put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr); |
0da34b6d BG |
1682 | return 0; |
1683 | } | |
1684 | ||
1685 | static void | |
1686 | myri10ge_get_pauseparam(struct net_device *netdev, | |
1687 | struct ethtool_pauseparam *pause) | |
1688 | { | |
1689 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1690 | ||
1691 | pause->autoneg = 0; | |
1692 | pause->rx_pause = mgp->pause; | |
1693 | pause->tx_pause = mgp->pause; | |
1694 | } | |
1695 | ||
1696 | static int | |
1697 | myri10ge_set_pauseparam(struct net_device *netdev, | |
1698 | struct ethtool_pauseparam *pause) | |
1699 | { | |
1700 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1701 | ||
1702 | if (pause->tx_pause != mgp->pause) | |
1703 | return myri10ge_change_pause(mgp, pause->tx_pause); | |
1704 | if (pause->rx_pause != mgp->pause) | |
2488f56d | 1705 | return myri10ge_change_pause(mgp, pause->rx_pause); |
0da34b6d BG |
1706 | if (pause->autoneg != 0) |
1707 | return -EINVAL; | |
1708 | return 0; | |
1709 | } | |
1710 | ||
1711 | static void | |
1712 | myri10ge_get_ringparam(struct net_device *netdev, | |
1713 | struct ethtool_ringparam *ring) | |
1714 | { | |
1715 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1716 | ||
0dcffac1 BG |
1717 | ring->rx_mini_max_pending = mgp->ss[0].rx_small.mask + 1; |
1718 | ring->rx_max_pending = mgp->ss[0].rx_big.mask + 1; | |
0da34b6d | 1719 | ring->rx_jumbo_max_pending = 0; |
6498be3f | 1720 | ring->tx_max_pending = mgp->ss[0].tx.mask + 1; |
0da34b6d BG |
1721 | ring->rx_mini_pending = ring->rx_mini_max_pending; |
1722 | ring->rx_pending = ring->rx_max_pending; | |
1723 | ring->rx_jumbo_pending = ring->rx_jumbo_max_pending; | |
1724 | ring->tx_pending = ring->tx_max_pending; | |
1725 | } | |
1726 | ||
b53bef84 | 1727 | static const char myri10ge_gstrings_main_stats[][ETH_GSTRING_LEN] = { |
0da34b6d BG |
1728 | "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors", |
1729 | "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions", | |
1730 | "rx_length_errors", "rx_over_errors", "rx_crc_errors", | |
1731 | "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors", | |
1732 | "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors", | |
1733 | "tx_heartbeat_errors", "tx_window_errors", | |
1734 | /* device-specific stats */ | |
e4b6c303 | 1735 | "tx_boundary", "irq", "MSI", "MSIX", |
0da34b6d | 1736 | "read_dma_bw_MBs", "write_dma_bw_MBs", "read_write_dma_bw_MBs", |
b53bef84 | 1737 | "serial_number", "watchdog_resets", |
5dd2d332 | 1738 | #ifdef CONFIG_MYRI10GE_DCA |
9a6b3b54 | 1739 | "dca_capable_firmware", "dca_device_present", |
981813d8 | 1740 | #endif |
c58ac5ca | 1741 | "link_changes", "link_up", "dropped_link_overflow", |
cee505db BG |
1742 | "dropped_link_error_or_filtered", |
1743 | "dropped_pause", "dropped_bad_phy", "dropped_bad_crc32", | |
1744 | "dropped_unicast_filtered", "dropped_multicast_filtered", | |
0da34b6d | 1745 | "dropped_runt", "dropped_overrun", "dropped_no_small_buffer", |
b53bef84 BG |
1746 | "dropped_no_big_buffer" |
1747 | }; | |
1748 | ||
1749 | static const char myri10ge_gstrings_slice_stats[][ETH_GSTRING_LEN] = { | |
1750 | "----------- slice ---------", | |
1751 | "tx_pkt_start", "tx_pkt_done", "tx_req", "tx_done", | |
1752 | "rx_small_cnt", "rx_big_cnt", | |
b3b6ae2c | 1753 | "wake_queue", "stop_queue", "tx_linearized", |
0da34b6d BG |
1754 | }; |
1755 | ||
1756 | #define MYRI10GE_NET_STATS_LEN 21 | |
b53bef84 BG |
1757 | #define MYRI10GE_MAIN_STATS_LEN ARRAY_SIZE(myri10ge_gstrings_main_stats) |
1758 | #define MYRI10GE_SLICE_STATS_LEN ARRAY_SIZE(myri10ge_gstrings_slice_stats) | |
0da34b6d BG |
1759 | |
1760 | static void | |
1761 | myri10ge_get_strings(struct net_device *netdev, u32 stringset, u8 * data) | |
1762 | { | |
0dcffac1 BG |
1763 | struct myri10ge_priv *mgp = netdev_priv(netdev); |
1764 | int i; | |
1765 | ||
0da34b6d BG |
1766 | switch (stringset) { |
1767 | case ETH_SS_STATS: | |
b53bef84 BG |
1768 | memcpy(data, *myri10ge_gstrings_main_stats, |
1769 | sizeof(myri10ge_gstrings_main_stats)); | |
1770 | data += sizeof(myri10ge_gstrings_main_stats); | |
0dcffac1 BG |
1771 | for (i = 0; i < mgp->num_slices; i++) { |
1772 | memcpy(data, *myri10ge_gstrings_slice_stats, | |
1773 | sizeof(myri10ge_gstrings_slice_stats)); | |
1774 | data += sizeof(myri10ge_gstrings_slice_stats); | |
1775 | } | |
0da34b6d BG |
1776 | break; |
1777 | } | |
1778 | } | |
1779 | ||
b9f2c044 | 1780 | static int myri10ge_get_sset_count(struct net_device *netdev, int sset) |
0da34b6d | 1781 | { |
0dcffac1 BG |
1782 | struct myri10ge_priv *mgp = netdev_priv(netdev); |
1783 | ||
b9f2c044 JG |
1784 | switch (sset) { |
1785 | case ETH_SS_STATS: | |
0dcffac1 BG |
1786 | return MYRI10GE_MAIN_STATS_LEN + |
1787 | mgp->num_slices * MYRI10GE_SLICE_STATS_LEN; | |
b9f2c044 JG |
1788 | default: |
1789 | return -EOPNOTSUPP; | |
1790 | } | |
0da34b6d BG |
1791 | } |
1792 | ||
1793 | static void | |
1794 | myri10ge_get_ethtool_stats(struct net_device *netdev, | |
1795 | struct ethtool_stats *stats, u64 * data) | |
1796 | { | |
1797 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
b53bef84 | 1798 | struct myri10ge_slice_state *ss; |
c5f7ef72 | 1799 | struct rtnl_link_stats64 link_stats; |
0dcffac1 | 1800 | int slice; |
0da34b6d BG |
1801 | int i; |
1802 | ||
59081825 | 1803 | /* force stats update */ |
306ff6eb | 1804 | memset(&link_stats, 0, sizeof(link_stats)); |
c5f7ef72 | 1805 | (void)myri10ge_get_stats(netdev, &link_stats); |
0da34b6d | 1806 | for (i = 0; i < MYRI10GE_NET_STATS_LEN; i++) |
c5f7ef72 | 1807 | data[i] = ((u64 *)&link_stats)[i]; |
0da34b6d | 1808 | |
b53bef84 | 1809 | data[i++] = (unsigned int)mgp->tx_boundary; |
2c1a1088 BG |
1810 | data[i++] = (unsigned int)mgp->pdev->irq; |
1811 | data[i++] = (unsigned int)mgp->msi_enabled; | |
0dcffac1 | 1812 | data[i++] = (unsigned int)mgp->msix_enabled; |
0da34b6d BG |
1813 | data[i++] = (unsigned int)mgp->read_dma; |
1814 | data[i++] = (unsigned int)mgp->write_dma; | |
1815 | data[i++] = (unsigned int)mgp->read_write_dma; | |
1816 | data[i++] = (unsigned int)mgp->serial_number; | |
0da34b6d | 1817 | data[i++] = (unsigned int)mgp->watchdog_resets; |
5dd2d332 | 1818 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
1819 | data[i++] = (unsigned int)(mgp->ss[0].dca_tag != NULL); |
1820 | data[i++] = (unsigned int)(mgp->dca_enabled); | |
1821 | #endif | |
c58ac5ca | 1822 | data[i++] = (unsigned int)mgp->link_changes; |
b53bef84 BG |
1823 | |
1824 | /* firmware stats are useful only in the first slice */ | |
0dcffac1 | 1825 | ss = &mgp->ss[0]; |
b53bef84 BG |
1826 | data[i++] = (unsigned int)ntohl(ss->fw_stats->link_up); |
1827 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_link_overflow); | |
cee505db | 1828 | data[i++] = |
b53bef84 BG |
1829 | (unsigned int)ntohl(ss->fw_stats->dropped_link_error_or_filtered); |
1830 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_pause); | |
1831 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_bad_phy); | |
1832 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_bad_crc32); | |
1833 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_unicast_filtered); | |
85a7ea1b | 1834 | data[i++] = |
b53bef84 BG |
1835 | (unsigned int)ntohl(ss->fw_stats->dropped_multicast_filtered); |
1836 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_runt); | |
1837 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_overrun); | |
1838 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_no_small_buffer); | |
1839 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_no_big_buffer); | |
1840 | ||
0dcffac1 BG |
1841 | for (slice = 0; slice < mgp->num_slices; slice++) { |
1842 | ss = &mgp->ss[slice]; | |
1843 | data[i++] = slice; | |
1844 | data[i++] = (unsigned int)ss->tx.pkt_start; | |
1845 | data[i++] = (unsigned int)ss->tx.pkt_done; | |
1846 | data[i++] = (unsigned int)ss->tx.req; | |
1847 | data[i++] = (unsigned int)ss->tx.done; | |
1848 | data[i++] = (unsigned int)ss->rx_small.cnt; | |
1849 | data[i++] = (unsigned int)ss->rx_big.cnt; | |
1850 | data[i++] = (unsigned int)ss->tx.wake_queue; | |
1851 | data[i++] = (unsigned int)ss->tx.stop_queue; | |
1852 | data[i++] = (unsigned int)ss->tx.linearized; | |
0dcffac1 | 1853 | } |
0da34b6d BG |
1854 | } |
1855 | ||
c58ac5ca BG |
1856 | static void myri10ge_set_msglevel(struct net_device *netdev, u32 value) |
1857 | { | |
1858 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1859 | mgp->msg_enable = value; | |
1860 | } | |
1861 | ||
1862 | static u32 myri10ge_get_msglevel(struct net_device *netdev) | |
1863 | { | |
1864 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1865 | return mgp->msg_enable; | |
1866 | } | |
1867 | ||
5dcd8467 JM |
1868 | /* |
1869 | * Use a low-level command to change the LED behavior. Rather than | |
1870 | * blinking (which is the normal case), when identify is used, the | |
1871 | * yellow LED turns solid. | |
1872 | */ | |
1873 | static int myri10ge_led(struct myri10ge_priv *mgp, int on) | |
1874 | { | |
1875 | struct mcp_gen_header *hdr; | |
1876 | struct device *dev = &mgp->pdev->dev; | |
1877 | size_t hdr_off, pattern_off, hdr_len; | |
1878 | u32 pattern = 0xfffffffe; | |
1879 | ||
1880 | /* find running firmware header */ | |
1881 | hdr_off = swab32(readl(mgp->sram + MCP_HEADER_PTR_OFFSET)); | |
1882 | if ((hdr_off & 3) || hdr_off + sizeof(*hdr) > mgp->sram_size) { | |
1883 | dev_err(dev, "Running firmware has bad header offset (%d)\n", | |
1884 | (int)hdr_off); | |
1885 | return -EIO; | |
1886 | } | |
1887 | hdr_len = swab32(readl(mgp->sram + hdr_off + | |
1888 | offsetof(struct mcp_gen_header, header_length))); | |
1889 | pattern_off = hdr_off + offsetof(struct mcp_gen_header, led_pattern); | |
1890 | if (pattern_off >= (hdr_len + hdr_off)) { | |
1891 | dev_info(dev, "Firmware does not support LED identification\n"); | |
1892 | return -EINVAL; | |
1893 | } | |
1894 | if (!on) | |
1895 | pattern = swab32(readl(mgp->sram + pattern_off + 4)); | |
59e955ed | 1896 | writel(swab32(pattern), mgp->sram + pattern_off); |
5dcd8467 JM |
1897 | return 0; |
1898 | } | |
1899 | ||
1900 | static int | |
1901 | myri10ge_phys_id(struct net_device *netdev, enum ethtool_phys_id_state state) | |
1902 | { | |
1903 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1904 | int rc; | |
1905 | ||
1906 | switch (state) { | |
1907 | case ETHTOOL_ID_ACTIVE: | |
1908 | rc = myri10ge_led(mgp, 1); | |
1909 | break; | |
1910 | ||
1911 | case ETHTOOL_ID_INACTIVE: | |
1912 | rc = myri10ge_led(mgp, 0); | |
1913 | break; | |
1914 | ||
1915 | default: | |
1916 | rc = -EINVAL; | |
1917 | } | |
1918 | ||
1919 | return rc; | |
1920 | } | |
1921 | ||
7282d491 | 1922 | static const struct ethtool_ops myri10ge_ethtool_ops = { |
0da34b6d BG |
1923 | .get_drvinfo = myri10ge_get_drvinfo, |
1924 | .get_coalesce = myri10ge_get_coalesce, | |
1925 | .set_coalesce = myri10ge_set_coalesce, | |
1926 | .get_pauseparam = myri10ge_get_pauseparam, | |
1927 | .set_pauseparam = myri10ge_set_pauseparam, | |
1928 | .get_ringparam = myri10ge_get_ringparam, | |
6ffdd071 | 1929 | .get_link = ethtool_op_get_link, |
0da34b6d | 1930 | .get_strings = myri10ge_get_strings, |
b9f2c044 | 1931 | .get_sset_count = myri10ge_get_sset_count, |
c58ac5ca BG |
1932 | .get_ethtool_stats = myri10ge_get_ethtool_stats, |
1933 | .set_msglevel = myri10ge_set_msglevel, | |
3a0c7d2d | 1934 | .get_msglevel = myri10ge_get_msglevel, |
5dcd8467 | 1935 | .set_phys_id = myri10ge_phys_id, |
cf901656 | 1936 | .get_link_ksettings = myri10ge_get_link_ksettings, |
0da34b6d BG |
1937 | }; |
1938 | ||
b53bef84 | 1939 | static int myri10ge_allocate_rings(struct myri10ge_slice_state *ss) |
0da34b6d | 1940 | { |
b53bef84 | 1941 | struct myri10ge_priv *mgp = ss->mgp; |
0da34b6d | 1942 | struct myri10ge_cmd cmd; |
b53bef84 | 1943 | struct net_device *dev = mgp->dev; |
0da34b6d BG |
1944 | int tx_ring_size, rx_ring_size; |
1945 | int tx_ring_entries, rx_ring_entries; | |
0dcffac1 | 1946 | int i, slice, status; |
0da34b6d BG |
1947 | size_t bytes; |
1948 | ||
0da34b6d | 1949 | /* get ring sizes */ |
0dcffac1 BG |
1950 | slice = ss - mgp->ss; |
1951 | cmd.data0 = slice; | |
0da34b6d BG |
1952 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_RING_SIZE, &cmd, 0); |
1953 | tx_ring_size = cmd.data0; | |
0dcffac1 | 1954 | cmd.data0 = slice; |
0da34b6d | 1955 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_RX_RING_SIZE, &cmd, 0); |
355c7265 BG |
1956 | if (status != 0) |
1957 | return status; | |
0da34b6d BG |
1958 | rx_ring_size = cmd.data0; |
1959 | ||
1960 | tx_ring_entries = tx_ring_size / sizeof(struct mcp_kreq_ether_send); | |
1961 | rx_ring_entries = rx_ring_size / sizeof(struct mcp_dma_addr); | |
b53bef84 BG |
1962 | ss->tx.mask = tx_ring_entries - 1; |
1963 | ss->rx_small.mask = ss->rx_big.mask = rx_ring_entries - 1; | |
0da34b6d | 1964 | |
355c7265 BG |
1965 | status = -ENOMEM; |
1966 | ||
0da34b6d BG |
1967 | /* allocate the host shadow rings */ |
1968 | ||
1969 | bytes = 8 + (MYRI10GE_MAX_SEND_DESC_TSO + 4) | |
b53bef84 BG |
1970 | * sizeof(*ss->tx.req_list); |
1971 | ss->tx.req_bytes = kzalloc(bytes, GFP_KERNEL); | |
1972 | if (ss->tx.req_bytes == NULL) | |
0da34b6d BG |
1973 | goto abort_with_nothing; |
1974 | ||
1975 | /* ensure req_list entries are aligned to 8 bytes */ | |
b53bef84 BG |
1976 | ss->tx.req_list = (struct mcp_kreq_ether_send *) |
1977 | ALIGN((unsigned long)ss->tx.req_bytes, 8); | |
236bb5e6 | 1978 | ss->tx.queue_active = 0; |
0da34b6d | 1979 | |
b53bef84 BG |
1980 | bytes = rx_ring_entries * sizeof(*ss->rx_small.shadow); |
1981 | ss->rx_small.shadow = kzalloc(bytes, GFP_KERNEL); | |
1982 | if (ss->rx_small.shadow == NULL) | |
0da34b6d BG |
1983 | goto abort_with_tx_req_bytes; |
1984 | ||
b53bef84 BG |
1985 | bytes = rx_ring_entries * sizeof(*ss->rx_big.shadow); |
1986 | ss->rx_big.shadow = kzalloc(bytes, GFP_KERNEL); | |
1987 | if (ss->rx_big.shadow == NULL) | |
0da34b6d BG |
1988 | goto abort_with_rx_small_shadow; |
1989 | ||
1990 | /* allocate the host info rings */ | |
1991 | ||
b53bef84 BG |
1992 | bytes = tx_ring_entries * sizeof(*ss->tx.info); |
1993 | ss->tx.info = kzalloc(bytes, GFP_KERNEL); | |
1994 | if (ss->tx.info == NULL) | |
0da34b6d BG |
1995 | goto abort_with_rx_big_shadow; |
1996 | ||
b53bef84 BG |
1997 | bytes = rx_ring_entries * sizeof(*ss->rx_small.info); |
1998 | ss->rx_small.info = kzalloc(bytes, GFP_KERNEL); | |
1999 | if (ss->rx_small.info == NULL) | |
0da34b6d BG |
2000 | goto abort_with_tx_info; |
2001 | ||
b53bef84 BG |
2002 | bytes = rx_ring_entries * sizeof(*ss->rx_big.info); |
2003 | ss->rx_big.info = kzalloc(bytes, GFP_KERNEL); | |
2004 | if (ss->rx_big.info == NULL) | |
0da34b6d BG |
2005 | goto abort_with_rx_small_info; |
2006 | ||
2007 | /* Fill the receive rings */ | |
b53bef84 BG |
2008 | ss->rx_big.cnt = 0; |
2009 | ss->rx_small.cnt = 0; | |
2010 | ss->rx_big.fill_cnt = 0; | |
2011 | ss->rx_small.fill_cnt = 0; | |
2012 | ss->rx_small.page_offset = MYRI10GE_ALLOC_SIZE; | |
2013 | ss->rx_big.page_offset = MYRI10GE_ALLOC_SIZE; | |
2014 | ss->rx_small.watchdog_needed = 0; | |
2015 | ss->rx_big.watchdog_needed = 0; | |
4b47638a JM |
2016 | if (mgp->small_bytes == 0) { |
2017 | ss->rx_small.fill_cnt = ss->rx_small.mask + 1; | |
2018 | } else { | |
2019 | myri10ge_alloc_rx_pages(mgp, &ss->rx_small, | |
2020 | mgp->small_bytes + MXGEFW_PAD, 0); | |
2021 | } | |
0da34b6d | 2022 | |
b53bef84 | 2023 | if (ss->rx_small.fill_cnt < ss->rx_small.mask + 1) { |
78ca90ea JP |
2024 | netdev_err(dev, "slice-%d: alloced only %d small bufs\n", |
2025 | slice, ss->rx_small.fill_cnt); | |
c7dab99b | 2026 | goto abort_with_rx_small_ring; |
0da34b6d BG |
2027 | } |
2028 | ||
b53bef84 BG |
2029 | myri10ge_alloc_rx_pages(mgp, &ss->rx_big, mgp->big_bytes, 0); |
2030 | if (ss->rx_big.fill_cnt < ss->rx_big.mask + 1) { | |
78ca90ea JP |
2031 | netdev_err(dev, "slice-%d: alloced only %d big bufs\n", |
2032 | slice, ss->rx_big.fill_cnt); | |
c7dab99b | 2033 | goto abort_with_rx_big_ring; |
0da34b6d BG |
2034 | } |
2035 | ||
2036 | return 0; | |
2037 | ||
2038 | abort_with_rx_big_ring: | |
b53bef84 BG |
2039 | for (i = ss->rx_big.cnt; i < ss->rx_big.fill_cnt; i++) { |
2040 | int idx = i & ss->rx_big.mask; | |
2041 | myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_big.info[idx], | |
c7dab99b | 2042 | mgp->big_bytes); |
b53bef84 | 2043 | put_page(ss->rx_big.info[idx].page); |
0da34b6d BG |
2044 | } |
2045 | ||
2046 | abort_with_rx_small_ring: | |
4b47638a JM |
2047 | if (mgp->small_bytes == 0) |
2048 | ss->rx_small.fill_cnt = ss->rx_small.cnt; | |
b53bef84 BG |
2049 | for (i = ss->rx_small.cnt; i < ss->rx_small.fill_cnt; i++) { |
2050 | int idx = i & ss->rx_small.mask; | |
2051 | myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_small.info[idx], | |
c7dab99b | 2052 | mgp->small_bytes + MXGEFW_PAD); |
b53bef84 | 2053 | put_page(ss->rx_small.info[idx].page); |
0da34b6d | 2054 | } |
c7dab99b | 2055 | |
b53bef84 | 2056 | kfree(ss->rx_big.info); |
0da34b6d BG |
2057 | |
2058 | abort_with_rx_small_info: | |
b53bef84 | 2059 | kfree(ss->rx_small.info); |
0da34b6d BG |
2060 | |
2061 | abort_with_tx_info: | |
b53bef84 | 2062 | kfree(ss->tx.info); |
0da34b6d BG |
2063 | |
2064 | abort_with_rx_big_shadow: | |
b53bef84 | 2065 | kfree(ss->rx_big.shadow); |
0da34b6d BG |
2066 | |
2067 | abort_with_rx_small_shadow: | |
b53bef84 | 2068 | kfree(ss->rx_small.shadow); |
0da34b6d BG |
2069 | |
2070 | abort_with_tx_req_bytes: | |
b53bef84 BG |
2071 | kfree(ss->tx.req_bytes); |
2072 | ss->tx.req_bytes = NULL; | |
2073 | ss->tx.req_list = NULL; | |
0da34b6d BG |
2074 | |
2075 | abort_with_nothing: | |
2076 | return status; | |
2077 | } | |
2078 | ||
b53bef84 | 2079 | static void myri10ge_free_rings(struct myri10ge_slice_state *ss) |
0da34b6d | 2080 | { |
b53bef84 | 2081 | struct myri10ge_priv *mgp = ss->mgp; |
0da34b6d BG |
2082 | struct sk_buff *skb; |
2083 | struct myri10ge_tx_buf *tx; | |
2084 | int i, len, idx; | |
2085 | ||
0dcffac1 BG |
2086 | /* If not allocated, skip it */ |
2087 | if (ss->tx.req_list == NULL) | |
2088 | return; | |
2089 | ||
b53bef84 BG |
2090 | for (i = ss->rx_big.cnt; i < ss->rx_big.fill_cnt; i++) { |
2091 | idx = i & ss->rx_big.mask; | |
2092 | if (i == ss->rx_big.fill_cnt - 1) | |
2093 | ss->rx_big.info[idx].page_offset = MYRI10GE_ALLOC_SIZE; | |
2094 | myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_big.info[idx], | |
c7dab99b | 2095 | mgp->big_bytes); |
b53bef84 | 2096 | put_page(ss->rx_big.info[idx].page); |
0da34b6d BG |
2097 | } |
2098 | ||
4b47638a JM |
2099 | if (mgp->small_bytes == 0) |
2100 | ss->rx_small.fill_cnt = ss->rx_small.cnt; | |
b53bef84 BG |
2101 | for (i = ss->rx_small.cnt; i < ss->rx_small.fill_cnt; i++) { |
2102 | idx = i & ss->rx_small.mask; | |
2103 | if (i == ss->rx_small.fill_cnt - 1) | |
2104 | ss->rx_small.info[idx].page_offset = | |
c7dab99b | 2105 | MYRI10GE_ALLOC_SIZE; |
b53bef84 | 2106 | myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_small.info[idx], |
c7dab99b | 2107 | mgp->small_bytes + MXGEFW_PAD); |
b53bef84 | 2108 | put_page(ss->rx_small.info[idx].page); |
c7dab99b | 2109 | } |
b53bef84 | 2110 | tx = &ss->tx; |
0da34b6d BG |
2111 | while (tx->done != tx->req) { |
2112 | idx = tx->done & tx->mask; | |
2113 | skb = tx->info[idx].skb; | |
2114 | ||
2115 | /* Mark as free */ | |
2116 | tx->info[idx].skb = NULL; | |
2117 | tx->done++; | |
c755b4b6 FT |
2118 | len = dma_unmap_len(&tx->info[idx], len); |
2119 | dma_unmap_len_set(&tx->info[idx], len, 0); | |
0da34b6d | 2120 | if (skb) { |
b53bef84 | 2121 | ss->stats.tx_dropped++; |
0da34b6d BG |
2122 | dev_kfree_skb_any(skb); |
2123 | if (len) | |
2124 | pci_unmap_single(mgp->pdev, | |
c755b4b6 | 2125 | dma_unmap_addr(&tx->info[idx], |
0da34b6d BG |
2126 | bus), len, |
2127 | PCI_DMA_TODEVICE); | |
2128 | } else { | |
2129 | if (len) | |
2130 | pci_unmap_page(mgp->pdev, | |
c755b4b6 | 2131 | dma_unmap_addr(&tx->info[idx], |
0da34b6d BG |
2132 | bus), len, |
2133 | PCI_DMA_TODEVICE); | |
2134 | } | |
2135 | } | |
b53bef84 | 2136 | kfree(ss->rx_big.info); |
0da34b6d | 2137 | |
b53bef84 | 2138 | kfree(ss->rx_small.info); |
0da34b6d | 2139 | |
b53bef84 | 2140 | kfree(ss->tx.info); |
0da34b6d | 2141 | |
b53bef84 | 2142 | kfree(ss->rx_big.shadow); |
0da34b6d | 2143 | |
b53bef84 | 2144 | kfree(ss->rx_small.shadow); |
0da34b6d | 2145 | |
b53bef84 BG |
2146 | kfree(ss->tx.req_bytes); |
2147 | ss->tx.req_bytes = NULL; | |
2148 | ss->tx.req_list = NULL; | |
0da34b6d BG |
2149 | } |
2150 | ||
df30a740 BG |
2151 | static int myri10ge_request_irq(struct myri10ge_priv *mgp) |
2152 | { | |
2153 | struct pci_dev *pdev = mgp->pdev; | |
0dcffac1 BG |
2154 | struct myri10ge_slice_state *ss; |
2155 | struct net_device *netdev = mgp->dev; | |
2156 | int i; | |
df30a740 BG |
2157 | int status; |
2158 | ||
0dcffac1 BG |
2159 | mgp->msi_enabled = 0; |
2160 | mgp->msix_enabled = 0; | |
2161 | status = 0; | |
df30a740 | 2162 | if (myri10ge_msi) { |
0dcffac1 | 2163 | if (mgp->num_slices > 1) { |
0729cc0c AG |
2164 | status = pci_enable_msix_range(pdev, mgp->msix_vectors, |
2165 | mgp->num_slices, mgp->num_slices); | |
2166 | if (status < 0) { | |
0dcffac1 BG |
2167 | dev_err(&pdev->dev, |
2168 | "Error %d setting up MSI-X\n", status); | |
2169 | return status; | |
2170 | } | |
0729cc0c | 2171 | mgp->msix_enabled = 1; |
0dcffac1 BG |
2172 | } |
2173 | if (mgp->msix_enabled == 0) { | |
2174 | status = pci_enable_msi(pdev); | |
2175 | if (status != 0) { | |
2176 | dev_err(&pdev->dev, | |
2177 | "Error %d setting up MSI; falling back to xPIC\n", | |
2178 | status); | |
2179 | } else { | |
2180 | mgp->msi_enabled = 1; | |
2181 | } | |
2182 | } | |
df30a740 | 2183 | } |
0dcffac1 BG |
2184 | if (mgp->msix_enabled) { |
2185 | for (i = 0; i < mgp->num_slices; i++) { | |
2186 | ss = &mgp->ss[i]; | |
2187 | snprintf(ss->irq_desc, sizeof(ss->irq_desc), | |
2188 | "%s:slice-%d", netdev->name, i); | |
2189 | status = request_irq(mgp->msix_vectors[i].vector, | |
2190 | myri10ge_intr, 0, ss->irq_desc, | |
2191 | ss); | |
2192 | if (status != 0) { | |
2193 | dev_err(&pdev->dev, | |
2194 | "slice %d failed to allocate IRQ\n", i); | |
2195 | i--; | |
2196 | while (i >= 0) { | |
2197 | free_irq(mgp->msix_vectors[i].vector, | |
2198 | &mgp->ss[i]); | |
2199 | i--; | |
2200 | } | |
2201 | pci_disable_msix(pdev); | |
2202 | return status; | |
2203 | } | |
2204 | } | |
2205 | } else { | |
2206 | status = request_irq(pdev->irq, myri10ge_intr, IRQF_SHARED, | |
2207 | mgp->dev->name, &mgp->ss[0]); | |
2208 | if (status != 0) { | |
2209 | dev_err(&pdev->dev, "failed to allocate IRQ\n"); | |
2210 | if (mgp->msi_enabled) | |
2211 | pci_disable_msi(pdev); | |
2212 | } | |
df30a740 BG |
2213 | } |
2214 | return status; | |
2215 | } | |
2216 | ||
2217 | static void myri10ge_free_irq(struct myri10ge_priv *mgp) | |
2218 | { | |
2219 | struct pci_dev *pdev = mgp->pdev; | |
0dcffac1 | 2220 | int i; |
df30a740 | 2221 | |
0dcffac1 BG |
2222 | if (mgp->msix_enabled) { |
2223 | for (i = 0; i < mgp->num_slices; i++) | |
2224 | free_irq(mgp->msix_vectors[i].vector, &mgp->ss[i]); | |
2225 | } else { | |
2226 | free_irq(pdev->irq, &mgp->ss[0]); | |
2227 | } | |
df30a740 BG |
2228 | if (mgp->msi_enabled) |
2229 | pci_disable_msi(pdev); | |
0dcffac1 BG |
2230 | if (mgp->msix_enabled) |
2231 | pci_disable_msix(pdev); | |
df30a740 BG |
2232 | } |
2233 | ||
77929732 BG |
2234 | static int myri10ge_get_txrx(struct myri10ge_priv *mgp, int slice) |
2235 | { | |
2236 | struct myri10ge_cmd cmd; | |
2237 | struct myri10ge_slice_state *ss; | |
2238 | int status; | |
2239 | ||
2240 | ss = &mgp->ss[slice]; | |
236bb5e6 BG |
2241 | status = 0; |
2242 | if (slice == 0 || (mgp->dev->real_num_tx_queues > 1)) { | |
2243 | cmd.data0 = slice; | |
2244 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_OFFSET, | |
2245 | &cmd, 0); | |
2246 | ss->tx.lanai = (struct mcp_kreq_ether_send __iomem *) | |
2247 | (mgp->sram + cmd.data0); | |
2248 | } | |
77929732 BG |
2249 | cmd.data0 = slice; |
2250 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SMALL_RX_OFFSET, | |
2251 | &cmd, 0); | |
2252 | ss->rx_small.lanai = (struct mcp_kreq_ether_recv __iomem *) | |
2253 | (mgp->sram + cmd.data0); | |
2254 | ||
2255 | cmd.data0 = slice; | |
2256 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_BIG_RX_OFFSET, &cmd, 0); | |
2257 | ss->rx_big.lanai = (struct mcp_kreq_ether_recv __iomem *) | |
2258 | (mgp->sram + cmd.data0); | |
2259 | ||
236bb5e6 BG |
2260 | ss->tx.send_go = (__iomem __be32 *) |
2261 | (mgp->sram + MXGEFW_ETH_SEND_GO + 64 * slice); | |
2262 | ss->tx.send_stop = (__iomem __be32 *) | |
2263 | (mgp->sram + MXGEFW_ETH_SEND_STOP + 64 * slice); | |
77929732 BG |
2264 | return status; |
2265 | ||
2266 | } | |
2267 | ||
2268 | static int myri10ge_set_stats(struct myri10ge_priv *mgp, int slice) | |
2269 | { | |
2270 | struct myri10ge_cmd cmd; | |
2271 | struct myri10ge_slice_state *ss; | |
2272 | int status; | |
2273 | ||
2274 | ss = &mgp->ss[slice]; | |
2275 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(ss->fw_stats_bus); | |
2276 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(ss->fw_stats_bus); | |
236bb5e6 | 2277 | cmd.data2 = sizeof(struct mcp_irq_data) | (slice << 16); |
77929732 BG |
2278 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_STATS_DMA_V2, &cmd, 0); |
2279 | if (status == -ENOSYS) { | |
2280 | dma_addr_t bus = ss->fw_stats_bus; | |
2281 | if (slice != 0) | |
2282 | return -EINVAL; | |
2283 | bus += offsetof(struct mcp_irq_data, send_done_count); | |
2284 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(bus); | |
2285 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(bus); | |
2286 | status = myri10ge_send_cmd(mgp, | |
2287 | MXGEFW_CMD_SET_STATS_DMA_OBSOLETE, | |
2288 | &cmd, 0); | |
2289 | /* Firmware cannot support multicast without STATS_DMA_V2 */ | |
2290 | mgp->fw_multicast_support = 0; | |
2291 | } else { | |
2292 | mgp->fw_multicast_support = 1; | |
2293 | } | |
2294 | return 0; | |
2295 | } | |
77929732 | 2296 | |
0da34b6d BG |
2297 | static int myri10ge_open(struct net_device *dev) |
2298 | { | |
0dcffac1 | 2299 | struct myri10ge_slice_state *ss; |
b53bef84 | 2300 | struct myri10ge_priv *mgp = netdev_priv(dev); |
0da34b6d | 2301 | struct myri10ge_cmd cmd; |
0dcffac1 | 2302 | int i, status, big_pow2, slice; |
59e955ed | 2303 | u8 __iomem *itable; |
0da34b6d | 2304 | |
0da34b6d BG |
2305 | if (mgp->running != MYRI10GE_ETH_STOPPED) |
2306 | return -EBUSY; | |
2307 | ||
2308 | mgp->running = MYRI10GE_ETH_STARTING; | |
2309 | status = myri10ge_reset(mgp); | |
2310 | if (status != 0) { | |
78ca90ea | 2311 | netdev_err(dev, "failed reset\n"); |
df30a740 | 2312 | goto abort_with_nothing; |
0da34b6d BG |
2313 | } |
2314 | ||
0dcffac1 BG |
2315 | if (mgp->num_slices > 1) { |
2316 | cmd.data0 = mgp->num_slices; | |
236bb5e6 BG |
2317 | cmd.data1 = MXGEFW_SLICE_INTR_MODE_ONE_PER_SLICE; |
2318 | if (mgp->dev->real_num_tx_queues > 1) | |
2319 | cmd.data1 |= MXGEFW_SLICE_ENABLE_MULTIPLE_TX_QUEUES; | |
0dcffac1 BG |
2320 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ENABLE_RSS_QUEUES, |
2321 | &cmd, 0); | |
2322 | if (status != 0) { | |
78ca90ea | 2323 | netdev_err(dev, "failed to set number of slices\n"); |
0dcffac1 BG |
2324 | goto abort_with_nothing; |
2325 | } | |
2326 | /* setup the indirection table */ | |
2327 | cmd.data0 = mgp->num_slices; | |
2328 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_RSS_TABLE_SIZE, | |
2329 | &cmd, 0); | |
2330 | ||
2331 | status |= myri10ge_send_cmd(mgp, | |
2332 | MXGEFW_CMD_GET_RSS_TABLE_OFFSET, | |
2333 | &cmd, 0); | |
2334 | if (status != 0) { | |
78ca90ea | 2335 | netdev_err(dev, "failed to setup rss tables\n"); |
236bb5e6 | 2336 | goto abort_with_nothing; |
0dcffac1 BG |
2337 | } |
2338 | ||
2339 | /* just enable an identity mapping */ | |
2340 | itable = mgp->sram + cmd.data0; | |
2341 | for (i = 0; i < mgp->num_slices; i++) | |
2342 | __raw_writeb(i, &itable[i]); | |
2343 | ||
2344 | cmd.data0 = 1; | |
2345 | cmd.data1 = myri10ge_rss_hash; | |
2346 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_RSS_ENABLE, | |
2347 | &cmd, 0); | |
2348 | if (status != 0) { | |
78ca90ea | 2349 | netdev_err(dev, "failed to enable slices\n"); |
0dcffac1 BG |
2350 | goto abort_with_nothing; |
2351 | } | |
2352 | } | |
2353 | ||
df30a740 BG |
2354 | status = myri10ge_request_irq(mgp); |
2355 | if (status != 0) | |
2356 | goto abort_with_nothing; | |
2357 | ||
0da34b6d BG |
2358 | /* decide what small buffer size to use. For good TCP rx |
2359 | * performance, it is important to not receive 1514 byte | |
2360 | * frames into jumbo buffers, as it confuses the socket buffer | |
2361 | * accounting code, leading to drops and erratic performance. | |
2362 | */ | |
2363 | ||
2364 | if (dev->mtu <= ETH_DATA_LEN) | |
c7dab99b BG |
2365 | /* enough for a TCP header */ |
2366 | mgp->small_bytes = (128 > SMP_CACHE_BYTES) | |
2367 | ? (128 - MXGEFW_PAD) | |
2368 | : (SMP_CACHE_BYTES - MXGEFW_PAD); | |
0da34b6d | 2369 | else |
de3c4507 BG |
2370 | /* enough for a vlan encapsulated ETH_DATA_LEN frame */ |
2371 | mgp->small_bytes = VLAN_ETH_FRAME_LEN; | |
0da34b6d BG |
2372 | |
2373 | /* Override the small buffer size? */ | |
4b47638a | 2374 | if (myri10ge_small_bytes >= 0) |
0da34b6d BG |
2375 | mgp->small_bytes = myri10ge_small_bytes; |
2376 | ||
0da34b6d BG |
2377 | /* Firmware needs the big buff size as a power of 2. Lie and |
2378 | * tell him the buffer is larger, because we only use 1 | |
2379 | * buffer/pkt, and the mtu will prevent overruns. | |
2380 | */ | |
13348bee | 2381 | big_pow2 = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD; |
c7dab99b | 2382 | if (big_pow2 < MYRI10GE_ALLOC_SIZE / 2) { |
199126a2 | 2383 | while (!is_power_of_2(big_pow2)) |
c7dab99b | 2384 | big_pow2++; |
13348bee | 2385 | mgp->big_bytes = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD; |
c7dab99b BG |
2386 | } else { |
2387 | big_pow2 = MYRI10GE_ALLOC_SIZE; | |
2388 | mgp->big_bytes = big_pow2; | |
2389 | } | |
2390 | ||
0dcffac1 BG |
2391 | /* setup the per-slice data structures */ |
2392 | for (slice = 0; slice < mgp->num_slices; slice++) { | |
2393 | ss = &mgp->ss[slice]; | |
2394 | ||
2395 | status = myri10ge_get_txrx(mgp, slice); | |
2396 | if (status != 0) { | |
78ca90ea | 2397 | netdev_err(dev, "failed to get ring sizes or locations\n"); |
0dcffac1 BG |
2398 | goto abort_with_rings; |
2399 | } | |
2400 | status = myri10ge_allocate_rings(ss); | |
2401 | if (status != 0) | |
2402 | goto abort_with_rings; | |
236bb5e6 BG |
2403 | |
2404 | /* only firmware which supports multiple TX queues | |
2405 | * supports setting up the tx stats on non-zero | |
2406 | * slices */ | |
2407 | if (slice == 0 || mgp->dev->real_num_tx_queues > 1) | |
0dcffac1 BG |
2408 | status = myri10ge_set_stats(mgp, slice); |
2409 | if (status) { | |
78ca90ea | 2410 | netdev_err(dev, "Couldn't set stats DMA\n"); |
0dcffac1 BG |
2411 | goto abort_with_rings; |
2412 | } | |
2413 | ||
0dcffac1 BG |
2414 | /* must happen prior to any irq */ |
2415 | napi_enable(&(ss)->napi); | |
2416 | } | |
0da34b6d BG |
2417 | |
2418 | /* now give firmware buffers sizes, and MTU */ | |
2419 | cmd.data0 = dev->mtu + ETH_HLEN + VLAN_HLEN; | |
2420 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_MTU, &cmd, 0); | |
2421 | cmd.data0 = mgp->small_bytes; | |
2422 | status |= | |
2423 | myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_SMALL_BUFFER_SIZE, &cmd, 0); | |
2424 | cmd.data0 = big_pow2; | |
2425 | status |= | |
2426 | myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_BIG_BUFFER_SIZE, &cmd, 0); | |
2427 | if (status) { | |
78ca90ea | 2428 | netdev_err(dev, "Couldn't set buffer sizes\n"); |
0da34b6d BG |
2429 | goto abort_with_rings; |
2430 | } | |
2431 | ||
0dcffac1 BG |
2432 | /* |
2433 | * Set Linux style TSO mode; this is needed only on newer | |
2434 | * firmware versions. Older versions default to Linux | |
2435 | * style TSO | |
2436 | */ | |
2437 | cmd.data0 = 0; | |
2438 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_TSO_MODE, &cmd, 0); | |
2439 | if (status && status != -ENOSYS) { | |
78ca90ea | 2440 | netdev_err(dev, "Couldn't set TSO mode\n"); |
0da34b6d BG |
2441 | goto abort_with_rings; |
2442 | } | |
2443 | ||
66341fff | 2444 | mgp->link_state = ~0U; |
0da34b6d BG |
2445 | mgp->rdma_tags_available = 15; |
2446 | ||
0da34b6d BG |
2447 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_UP, &cmd, 0); |
2448 | if (status) { | |
78ca90ea | 2449 | netdev_err(dev, "Couldn't bring up link\n"); |
0da34b6d BG |
2450 | goto abort_with_rings; |
2451 | } | |
2452 | ||
0da34b6d BG |
2453 | mgp->running = MYRI10GE_ETH_RUNNING; |
2454 | mgp->watchdog_timer.expires = jiffies + myri10ge_watchdog_timeout * HZ; | |
2455 | add_timer(&mgp->watchdog_timer); | |
236bb5e6 BG |
2456 | netif_tx_wake_all_queues(dev); |
2457 | ||
0da34b6d BG |
2458 | return 0; |
2459 | ||
2460 | abort_with_rings: | |
051d36f3 BG |
2461 | while (slice) { |
2462 | slice--; | |
2463 | napi_disable(&mgp->ss[slice].napi); | |
2464 | } | |
0dcffac1 BG |
2465 | for (i = 0; i < mgp->num_slices; i++) |
2466 | myri10ge_free_rings(&mgp->ss[i]); | |
0da34b6d | 2467 | |
df30a740 BG |
2468 | myri10ge_free_irq(mgp); |
2469 | ||
0da34b6d BG |
2470 | abort_with_nothing: |
2471 | mgp->running = MYRI10GE_ETH_STOPPED; | |
2472 | return -ENOMEM; | |
2473 | } | |
2474 | ||
2475 | static int myri10ge_close(struct net_device *dev) | |
2476 | { | |
b53bef84 | 2477 | struct myri10ge_priv *mgp = netdev_priv(dev); |
0da34b6d BG |
2478 | struct myri10ge_cmd cmd; |
2479 | int status, old_down_cnt; | |
0dcffac1 | 2480 | int i; |
0da34b6d | 2481 | |
0da34b6d BG |
2482 | if (mgp->running != MYRI10GE_ETH_RUNNING) |
2483 | return 0; | |
2484 | ||
0dcffac1 | 2485 | if (mgp->ss[0].tx.req_bytes == NULL) |
0da34b6d BG |
2486 | return 0; |
2487 | ||
2488 | del_timer_sync(&mgp->watchdog_timer); | |
2489 | mgp->running = MYRI10GE_ETH_STOPPING; | |
362108b5 | 2490 | for (i = 0; i < mgp->num_slices; i++) |
0dcffac1 | 2491 | napi_disable(&mgp->ss[i].napi); |
362108b5 | 2492 | |
0da34b6d | 2493 | netif_carrier_off(dev); |
236bb5e6 BG |
2494 | |
2495 | netif_tx_stop_all_queues(dev); | |
d0234215 BG |
2496 | if (mgp->rebooted == 0) { |
2497 | old_down_cnt = mgp->down_cnt; | |
2498 | mb(); | |
2499 | status = | |
2500 | myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_DOWN, &cmd, 0); | |
2501 | if (status) | |
78ca90ea | 2502 | netdev_err(dev, "Couldn't bring down link\n"); |
0da34b6d | 2503 | |
d0234215 BG |
2504 | wait_event_timeout(mgp->down_wq, old_down_cnt != mgp->down_cnt, |
2505 | HZ); | |
2506 | if (old_down_cnt == mgp->down_cnt) | |
78ca90ea | 2507 | netdev_err(dev, "never got down irq\n"); |
d0234215 | 2508 | } |
0da34b6d | 2509 | netif_tx_disable(dev); |
df30a740 | 2510 | myri10ge_free_irq(mgp); |
0dcffac1 BG |
2511 | for (i = 0; i < mgp->num_slices; i++) |
2512 | myri10ge_free_rings(&mgp->ss[i]); | |
0da34b6d BG |
2513 | |
2514 | mgp->running = MYRI10GE_ETH_STOPPED; | |
2515 | return 0; | |
2516 | } | |
2517 | ||
2518 | /* copy an array of struct mcp_kreq_ether_send's to the mcp. Copy | |
2519 | * backwards one at a time and handle ring wraps */ | |
2520 | ||
2521 | static inline void | |
2522 | myri10ge_submit_req_backwards(struct myri10ge_tx_buf *tx, | |
2523 | struct mcp_kreq_ether_send *src, int cnt) | |
2524 | { | |
2525 | int idx, starting_slot; | |
2526 | starting_slot = tx->req; | |
2527 | while (cnt > 1) { | |
2528 | cnt--; | |
2529 | idx = (starting_slot + cnt) & tx->mask; | |
2530 | myri10ge_pio_copy(&tx->lanai[idx], &src[cnt], sizeof(*src)); | |
2531 | mb(); | |
2532 | } | |
2533 | } | |
2534 | ||
2535 | /* | |
2536 | * copy an array of struct mcp_kreq_ether_send's to the mcp. Copy | |
2537 | * at most 32 bytes at a time, so as to avoid involving the software | |
2538 | * pio handler in the nic. We re-write the first segment's flags | |
2539 | * to mark them valid only after writing the entire chain. | |
2540 | */ | |
2541 | ||
2542 | static inline void | |
2543 | myri10ge_submit_req(struct myri10ge_tx_buf *tx, struct mcp_kreq_ether_send *src, | |
2544 | int cnt) | |
2545 | { | |
2546 | int idx, i; | |
2547 | struct mcp_kreq_ether_send __iomem *dstp, *dst; | |
2548 | struct mcp_kreq_ether_send *srcp; | |
2549 | u8 last_flags; | |
2550 | ||
2551 | idx = tx->req & tx->mask; | |
2552 | ||
2553 | last_flags = src->flags; | |
2554 | src->flags = 0; | |
2555 | mb(); | |
2556 | dst = dstp = &tx->lanai[idx]; | |
2557 | srcp = src; | |
2558 | ||
2559 | if ((idx + cnt) < tx->mask) { | |
2560 | for (i = 0; i < (cnt - 1); i += 2) { | |
2561 | myri10ge_pio_copy(dstp, srcp, 2 * sizeof(*src)); | |
2562 | mb(); /* force write every 32 bytes */ | |
2563 | srcp += 2; | |
2564 | dstp += 2; | |
2565 | } | |
2566 | } else { | |
2567 | /* submit all but the first request, and ensure | |
2568 | * that it is submitted below */ | |
2569 | myri10ge_submit_req_backwards(tx, src, cnt); | |
2570 | i = 0; | |
2571 | } | |
2572 | if (i < cnt) { | |
2573 | /* submit the first request */ | |
2574 | myri10ge_pio_copy(dstp, srcp, sizeof(*src)); | |
2575 | mb(); /* barrier before setting valid flag */ | |
2576 | } | |
2577 | ||
2578 | /* re-write the last 32-bits with the valid flags */ | |
2579 | src->flags = last_flags; | |
40f6cff5 | 2580 | put_be32(*((__be32 *) src + 3), (__be32 __iomem *) dst + 3); |
0da34b6d BG |
2581 | tx->req += cnt; |
2582 | mb(); | |
2583 | } | |
2584 | ||
10545937 SG |
2585 | static void myri10ge_unmap_tx_dma(struct myri10ge_priv *mgp, |
2586 | struct myri10ge_tx_buf *tx, int idx) | |
2587 | { | |
2588 | unsigned int len; | |
2589 | int last_idx; | |
2590 | ||
2591 | /* Free any DMA resources we've alloced and clear out the skb slot */ | |
2592 | last_idx = (idx + 1) & tx->mask; | |
2593 | idx = tx->req & tx->mask; | |
2594 | do { | |
2595 | len = dma_unmap_len(&tx->info[idx], len); | |
2596 | if (len) { | |
2597 | if (tx->info[idx].skb != NULL) | |
2598 | pci_unmap_single(mgp->pdev, | |
2599 | dma_unmap_addr(&tx->info[idx], | |
2600 | bus), len, | |
2601 | PCI_DMA_TODEVICE); | |
2602 | else | |
2603 | pci_unmap_page(mgp->pdev, | |
2604 | dma_unmap_addr(&tx->info[idx], | |
2605 | bus), len, | |
2606 | PCI_DMA_TODEVICE); | |
2607 | dma_unmap_len_set(&tx->info[idx], len, 0); | |
2608 | tx->info[idx].skb = NULL; | |
2609 | } | |
2610 | idx = (idx + 1) & tx->mask; | |
2611 | } while (idx != last_idx); | |
2612 | } | |
2613 | ||
0da34b6d BG |
2614 | /* |
2615 | * Transmit a packet. We need to split the packet so that a single | |
b53bef84 | 2616 | * segment does not cross myri10ge->tx_boundary, so this makes segment |
0da34b6d BG |
2617 | * counting tricky. So rather than try to count segments up front, we |
2618 | * just give up if there are too few segments to hold a reasonably | |
2619 | * fragmented packet currently available. If we run | |
2620 | * out of segments while preparing a packet for DMA, we just linearize | |
2621 | * it and try again. | |
2622 | */ | |
2623 | ||
61357325 SH |
2624 | static netdev_tx_t myri10ge_xmit(struct sk_buff *skb, |
2625 | struct net_device *dev) | |
0da34b6d BG |
2626 | { |
2627 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
b53bef84 | 2628 | struct myri10ge_slice_state *ss; |
0da34b6d | 2629 | struct mcp_kreq_ether_send *req; |
b53bef84 | 2630 | struct myri10ge_tx_buf *tx; |
0da34b6d | 2631 | struct skb_frag_struct *frag; |
236bb5e6 | 2632 | struct netdev_queue *netdev_queue; |
0da34b6d | 2633 | dma_addr_t bus; |
40f6cff5 AV |
2634 | u32 low; |
2635 | __be32 high_swapped; | |
0da34b6d | 2636 | unsigned int len; |
10545937 | 2637 | int idx, avail, frag_cnt, frag_idx, count, mss, max_segments; |
236bb5e6 | 2638 | u16 pseudo_hdr_offset, cksum_offset, queue; |
0da34b6d BG |
2639 | int cum_len, seglen, boundary, rdma_count; |
2640 | u8 flags, odd_flag; | |
2641 | ||
236bb5e6 | 2642 | queue = skb_get_queue_mapping(skb); |
236bb5e6 BG |
2643 | ss = &mgp->ss[queue]; |
2644 | netdev_queue = netdev_get_tx_queue(mgp->dev, queue); | |
b53bef84 | 2645 | tx = &ss->tx; |
236bb5e6 | 2646 | |
0da34b6d BG |
2647 | again: |
2648 | req = tx->req_list; | |
2649 | avail = tx->mask - 1 - (tx->req - tx->done); | |
2650 | ||
2651 | mss = 0; | |
2652 | max_segments = MXGEFW_MAX_SEND_DESC; | |
2653 | ||
917690cd | 2654 | if (skb_is_gso(skb)) { |
7967168c | 2655 | mss = skb_shinfo(skb)->gso_size; |
917690cd | 2656 | max_segments = MYRI10GE_MAX_SEND_DESC_TSO; |
0da34b6d | 2657 | } |
0da34b6d BG |
2658 | |
2659 | if ((unlikely(avail < max_segments))) { | |
2660 | /* we are out of transmit resources */ | |
b53bef84 | 2661 | tx->stop_queue++; |
236bb5e6 | 2662 | netif_tx_stop_queue(netdev_queue); |
5b548140 | 2663 | return NETDEV_TX_BUSY; |
0da34b6d BG |
2664 | } |
2665 | ||
2666 | /* Setup checksum offloading, if needed */ | |
2667 | cksum_offset = 0; | |
2668 | pseudo_hdr_offset = 0; | |
2669 | odd_flag = 0; | |
2670 | flags = (MXGEFW_FLAGS_NO_TSO | MXGEFW_FLAGS_FIRST); | |
84fa7933 | 2671 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
0d0b1672 | 2672 | cksum_offset = skb_checksum_start_offset(skb); |
ff1dcadb | 2673 | pseudo_hdr_offset = cksum_offset + skb->csum_offset; |
0da34b6d BG |
2674 | /* If the headers are excessively large, then we must |
2675 | * fall back to a software checksum */ | |
4f93fde0 BG |
2676 | if (unlikely(!mss && (cksum_offset > 255 || |
2677 | pseudo_hdr_offset > 127))) { | |
84fa7933 | 2678 | if (skb_checksum_help(skb)) |
0da34b6d BG |
2679 | goto drop; |
2680 | cksum_offset = 0; | |
2681 | pseudo_hdr_offset = 0; | |
2682 | } else { | |
0da34b6d BG |
2683 | odd_flag = MXGEFW_FLAGS_ALIGN_ODD; |
2684 | flags |= MXGEFW_FLAGS_CKSUM; | |
2685 | } | |
2686 | } | |
2687 | ||
2688 | cum_len = 0; | |
2689 | ||
0da34b6d BG |
2690 | if (mss) { /* TSO */ |
2691 | /* this removes any CKSUM flag from before */ | |
2692 | flags = (MXGEFW_FLAGS_TSO_HDR | MXGEFW_FLAGS_FIRST); | |
2693 | ||
2694 | /* negative cum_len signifies to the | |
2695 | * send loop that we are still in the | |
2696 | * header portion of the TSO packet. | |
4f93fde0 | 2697 | * TSO header can be at most 1KB long */ |
ab6a5bb6 | 2698 | cum_len = -(skb_transport_offset(skb) + tcp_hdrlen(skb)); |
0da34b6d | 2699 | |
4f93fde0 BG |
2700 | /* for IPv6 TSO, the checksum offset stores the |
2701 | * TCP header length, to save the firmware from | |
2702 | * the need to parse the headers */ | |
2703 | if (skb_is_gso_v6(skb)) { | |
2704 | cksum_offset = tcp_hdrlen(skb); | |
2705 | /* Can only handle headers <= max_tso6 long */ | |
2706 | if (unlikely(-cum_len > mgp->max_tso6)) | |
2707 | return myri10ge_sw_tso(skb, dev); | |
2708 | } | |
0da34b6d BG |
2709 | /* for TSO, pseudo_hdr_offset holds mss. |
2710 | * The firmware figures out where to put | |
2711 | * the checksum by parsing the header. */ | |
40f6cff5 | 2712 | pseudo_hdr_offset = mss; |
0da34b6d | 2713 | } else |
0da34b6d BG |
2714 | /* Mark small packets, and pad out tiny packets */ |
2715 | if (skb->len <= MXGEFW_SEND_SMALL_SIZE) { | |
2716 | flags |= MXGEFW_FLAGS_SMALL; | |
2717 | ||
2718 | /* pad frames to at least ETH_ZLEN bytes */ | |
b0b9f333 AD |
2719 | if (eth_skb_pad(skb)) { |
2720 | /* The packet is gone, so we must | |
2721 | * return 0 */ | |
2722 | ss->stats.tx_dropped += 1; | |
2723 | return NETDEV_TX_OK; | |
0da34b6d BG |
2724 | } |
2725 | } | |
2726 | ||
2727 | /* map the skb for DMA */ | |
e743d313 | 2728 | len = skb_headlen(skb); |
10545937 SG |
2729 | bus = pci_map_single(mgp->pdev, skb->data, len, PCI_DMA_TODEVICE); |
2730 | if (unlikely(pci_dma_mapping_error(mgp->pdev, bus))) | |
2731 | goto drop; | |
2732 | ||
0da34b6d BG |
2733 | idx = tx->req & tx->mask; |
2734 | tx->info[idx].skb = skb; | |
c755b4b6 FT |
2735 | dma_unmap_addr_set(&tx->info[idx], bus, bus); |
2736 | dma_unmap_len_set(&tx->info[idx], len, len); | |
0da34b6d BG |
2737 | |
2738 | frag_cnt = skb_shinfo(skb)->nr_frags; | |
2739 | frag_idx = 0; | |
2740 | count = 0; | |
2741 | rdma_count = 0; | |
2742 | ||
2743 | /* "rdma_count" is the number of RDMAs belonging to the | |
2744 | * current packet BEFORE the current send request. For | |
2745 | * non-TSO packets, this is equal to "count". | |
2746 | * For TSO packets, rdma_count needs to be reset | |
2747 | * to 0 after a segment cut. | |
2748 | * | |
2749 | * The rdma_count field of the send request is | |
2750 | * the number of RDMAs of the packet starting at | |
2751 | * that request. For TSO send requests with one ore more cuts | |
2752 | * in the middle, this is the number of RDMAs starting | |
2753 | * after the last cut in the request. All previous | |
2754 | * segments before the last cut implicitly have 1 RDMA. | |
2755 | * | |
2756 | * Since the number of RDMAs is not known beforehand, | |
2757 | * it must be filled-in retroactively - after each | |
2758 | * segmentation cut or at the end of the entire packet. | |
2759 | */ | |
2760 | ||
2761 | while (1) { | |
2762 | /* Break the SKB or Fragment up into pieces which | |
b53bef84 | 2763 | * do not cross mgp->tx_boundary */ |
0da34b6d BG |
2764 | low = MYRI10GE_LOWPART_TO_U32(bus); |
2765 | high_swapped = htonl(MYRI10GE_HIGHPART_TO_U32(bus)); | |
2766 | while (len) { | |
2767 | u8 flags_next; | |
2768 | int cum_len_next; | |
2769 | ||
2770 | if (unlikely(count == max_segments)) | |
2771 | goto abort_linearize; | |
2772 | ||
b53bef84 BG |
2773 | boundary = |
2774 | (low + mgp->tx_boundary) & ~(mgp->tx_boundary - 1); | |
0da34b6d BG |
2775 | seglen = boundary - low; |
2776 | if (seglen > len) | |
2777 | seglen = len; | |
2778 | flags_next = flags & ~MXGEFW_FLAGS_FIRST; | |
2779 | cum_len_next = cum_len + seglen; | |
0da34b6d BG |
2780 | if (mss) { /* TSO */ |
2781 | (req - rdma_count)->rdma_count = rdma_count + 1; | |
2782 | ||
2783 | if (likely(cum_len >= 0)) { /* payload */ | |
2784 | int next_is_first, chop; | |
2785 | ||
2786 | chop = (cum_len_next > mss); | |
2787 | cum_len_next = cum_len_next % mss; | |
2788 | next_is_first = (cum_len_next == 0); | |
2789 | flags |= chop * MXGEFW_FLAGS_TSO_CHOP; | |
2790 | flags_next |= next_is_first * | |
2791 | MXGEFW_FLAGS_FIRST; | |
2792 | rdma_count |= -(chop | next_is_first); | |
59e955ed | 2793 | rdma_count += chop & ~next_is_first; |
0da34b6d BG |
2794 | } else if (likely(cum_len_next >= 0)) { /* header ends */ |
2795 | int small; | |
2796 | ||
2797 | rdma_count = -1; | |
2798 | cum_len_next = 0; | |
2799 | seglen = -cum_len; | |
2800 | small = (mss <= MXGEFW_SEND_SMALL_SIZE); | |
2801 | flags_next = MXGEFW_FLAGS_TSO_PLD | | |
2802 | MXGEFW_FLAGS_FIRST | | |
2803 | (small * MXGEFW_FLAGS_SMALL); | |
2804 | } | |
2805 | } | |
0da34b6d BG |
2806 | req->addr_high = high_swapped; |
2807 | req->addr_low = htonl(low); | |
40f6cff5 | 2808 | req->pseudo_hdr_offset = htons(pseudo_hdr_offset); |
0da34b6d BG |
2809 | req->pad = 0; /* complete solid 16-byte block; does this matter? */ |
2810 | req->rdma_count = 1; | |
2811 | req->length = htons(seglen); | |
2812 | req->cksum_offset = cksum_offset; | |
2813 | req->flags = flags | ((cum_len & 1) * odd_flag); | |
2814 | ||
2815 | low += seglen; | |
2816 | len -= seglen; | |
2817 | cum_len = cum_len_next; | |
2818 | flags = flags_next; | |
2819 | req++; | |
2820 | count++; | |
2821 | rdma_count++; | |
4f93fde0 BG |
2822 | if (cksum_offset != 0 && !(mss && skb_is_gso_v6(skb))) { |
2823 | if (unlikely(cksum_offset > seglen)) | |
2824 | cksum_offset -= seglen; | |
2825 | else | |
2826 | cksum_offset = 0; | |
2827 | } | |
0da34b6d BG |
2828 | } |
2829 | if (frag_idx == frag_cnt) | |
2830 | break; | |
2831 | ||
2832 | /* map next fragment for DMA */ | |
0da34b6d BG |
2833 | frag = &skb_shinfo(skb)->frags[frag_idx]; |
2834 | frag_idx++; | |
9e903e08 | 2835 | len = skb_frag_size(frag); |
5dc3e196 | 2836 | bus = skb_frag_dma_map(&mgp->pdev->dev, frag, 0, len, |
5d6bcdfe | 2837 | DMA_TO_DEVICE); |
10545937 SG |
2838 | if (unlikely(pci_dma_mapping_error(mgp->pdev, bus))) { |
2839 | myri10ge_unmap_tx_dma(mgp, tx, idx); | |
2840 | goto drop; | |
2841 | } | |
2842 | idx = (count + tx->req) & tx->mask; | |
c755b4b6 FT |
2843 | dma_unmap_addr_set(&tx->info[idx], bus, bus); |
2844 | dma_unmap_len_set(&tx->info[idx], len, len); | |
0da34b6d BG |
2845 | } |
2846 | ||
2847 | (req - rdma_count)->rdma_count = rdma_count; | |
0da34b6d BG |
2848 | if (mss) |
2849 | do { | |
2850 | req--; | |
2851 | req->flags |= MXGEFW_FLAGS_TSO_LAST; | |
2852 | } while (!(req->flags & (MXGEFW_FLAGS_TSO_CHOP | | |
2853 | MXGEFW_FLAGS_FIRST))); | |
0da34b6d BG |
2854 | idx = ((count - 1) + tx->req) & tx->mask; |
2855 | tx->info[idx].last = 1; | |
e454e7e2 | 2856 | myri10ge_submit_req(tx, tx->req_list, count); |
236bb5e6 BG |
2857 | /* if using multiple tx queues, make sure NIC polls the |
2858 | * current slice */ | |
2859 | if ((mgp->dev->real_num_tx_queues > 1) && tx->queue_active == 0) { | |
2860 | tx->queue_active = 1; | |
2861 | put_be32(htonl(1), tx->send_go); | |
8c2f5fa5 | 2862 | mb(); |
236bb5e6 | 2863 | } |
0da34b6d BG |
2864 | tx->pkt_start++; |
2865 | if ((avail - count) < MXGEFW_MAX_SEND_DESC) { | |
b53bef84 | 2866 | tx->stop_queue++; |
236bb5e6 | 2867 | netif_tx_stop_queue(netdev_queue); |
0da34b6d | 2868 | } |
6ed10654 | 2869 | return NETDEV_TX_OK; |
0da34b6d BG |
2870 | |
2871 | abort_linearize: | |
10545937 | 2872 | myri10ge_unmap_tx_dma(mgp, tx, idx); |
0da34b6d | 2873 | |
89114afd | 2874 | if (skb_is_gso(skb)) { |
78ca90ea | 2875 | netdev_err(mgp->dev, "TSO but wanted to linearize?!?!?\n"); |
0da34b6d BG |
2876 | goto drop; |
2877 | } | |
2878 | ||
bec0e859 | 2879 | if (skb_linearize(skb)) |
0da34b6d BG |
2880 | goto drop; |
2881 | ||
b53bef84 | 2882 | tx->linearized++; |
0da34b6d BG |
2883 | goto again; |
2884 | ||
2885 | drop: | |
2886 | dev_kfree_skb_any(skb); | |
b53bef84 | 2887 | ss->stats.tx_dropped += 1; |
6ed10654 | 2888 | return NETDEV_TX_OK; |
0da34b6d BG |
2889 | |
2890 | } | |
2891 | ||
61357325 SH |
2892 | static netdev_tx_t myri10ge_sw_tso(struct sk_buff *skb, |
2893 | struct net_device *dev) | |
4f93fde0 BG |
2894 | { |
2895 | struct sk_buff *segs, *curr; | |
b53bef84 | 2896 | struct myri10ge_priv *mgp = netdev_priv(dev); |
d6279c88 | 2897 | struct myri10ge_slice_state *ss; |
61357325 | 2898 | netdev_tx_t status; |
4f93fde0 BG |
2899 | |
2900 | segs = skb_gso_segment(skb, dev->features & ~NETIF_F_TSO6); | |
801678c5 | 2901 | if (IS_ERR(segs)) |
4f93fde0 BG |
2902 | goto drop; |
2903 | ||
2904 | while (segs) { | |
2905 | curr = segs; | |
2906 | segs = segs->next; | |
2907 | curr->next = NULL; | |
2908 | status = myri10ge_xmit(curr, dev); | |
2909 | if (status != 0) { | |
2910 | dev_kfree_skb_any(curr); | |
2911 | if (segs != NULL) { | |
2912 | curr = segs; | |
2913 | segs = segs->next; | |
2914 | curr->next = NULL; | |
2915 | dev_kfree_skb_any(segs); | |
2916 | } | |
2917 | goto drop; | |
2918 | } | |
2919 | } | |
2920 | dev_kfree_skb_any(skb); | |
ec634fe3 | 2921 | return NETDEV_TX_OK; |
4f93fde0 BG |
2922 | |
2923 | drop: | |
d6279c88 | 2924 | ss = &mgp->ss[skb_get_queue_mapping(skb)]; |
4f93fde0 | 2925 | dev_kfree_skb_any(skb); |
d6279c88 | 2926 | ss->stats.tx_dropped += 1; |
ec634fe3 | 2927 | return NETDEV_TX_OK; |
4f93fde0 BG |
2928 | } |
2929 | ||
bc1f4470 | 2930 | static void myri10ge_get_stats(struct net_device *dev, |
2931 | struct rtnl_link_stats64 *stats) | |
0da34b6d | 2932 | { |
306ff6eb ED |
2933 | const struct myri10ge_priv *mgp = netdev_priv(dev); |
2934 | const struct myri10ge_slice_netstats *slice_stats; | |
0dcffac1 BG |
2935 | int i; |
2936 | ||
0dcffac1 BG |
2937 | for (i = 0; i < mgp->num_slices; i++) { |
2938 | slice_stats = &mgp->ss[i].stats; | |
2939 | stats->rx_packets += slice_stats->rx_packets; | |
2940 | stats->tx_packets += slice_stats->tx_packets; | |
2941 | stats->rx_bytes += slice_stats->rx_bytes; | |
2942 | stats->tx_bytes += slice_stats->tx_bytes; | |
2943 | stats->rx_dropped += slice_stats->rx_dropped; | |
2944 | stats->tx_dropped += slice_stats->tx_dropped; | |
2945 | } | |
0da34b6d BG |
2946 | } |
2947 | ||
2948 | static void myri10ge_set_multicast_list(struct net_device *dev) | |
2949 | { | |
b53bef84 | 2950 | struct myri10ge_priv *mgp = netdev_priv(dev); |
85a7ea1b | 2951 | struct myri10ge_cmd cmd; |
22bedad3 | 2952 | struct netdev_hw_addr *ha; |
6250223e | 2953 | __be32 data[2] = { 0, 0 }; |
85a7ea1b BG |
2954 | int err; |
2955 | ||
0da34b6d BG |
2956 | /* can be called from atomic contexts, |
2957 | * pass 1 to force atomicity in myri10ge_send_cmd() */ | |
85a7ea1b BG |
2958 | myri10ge_change_promisc(mgp, dev->flags & IFF_PROMISC, 1); |
2959 | ||
2960 | /* This firmware is known to not support multicast */ | |
2f76216f | 2961 | if (!mgp->fw_multicast_support) |
85a7ea1b BG |
2962 | return; |
2963 | ||
2964 | /* Disable multicast filtering */ | |
2965 | ||
2966 | err = myri10ge_send_cmd(mgp, MXGEFW_ENABLE_ALLMULTI, &cmd, 1); | |
2967 | if (err != 0) { | |
78ca90ea JP |
2968 | netdev_err(dev, "Failed MXGEFW_ENABLE_ALLMULTI, error status: %d\n", |
2969 | err); | |
85a7ea1b BG |
2970 | goto abort; |
2971 | } | |
2972 | ||
2f76216f | 2973 | if ((dev->flags & IFF_ALLMULTI) || mgp->adopted_rx_filter_bug) { |
85a7ea1b BG |
2974 | /* request to disable multicast filtering, so quit here */ |
2975 | return; | |
2976 | } | |
2977 | ||
2978 | /* Flush the filters */ | |
2979 | ||
2980 | err = myri10ge_send_cmd(mgp, MXGEFW_LEAVE_ALL_MULTICAST_GROUPS, | |
2981 | &cmd, 1); | |
2982 | if (err != 0) { | |
78ca90ea JP |
2983 | netdev_err(dev, "Failed MXGEFW_LEAVE_ALL_MULTICAST_GROUPS, error status: %d\n", |
2984 | err); | |
85a7ea1b BG |
2985 | goto abort; |
2986 | } | |
2987 | ||
2988 | /* Walk the multicast list, and add each address */ | |
22bedad3 | 2989 | netdev_for_each_mc_addr(ha, dev) { |
d458cdf7 | 2990 | memcpy(data, &ha->addr, ETH_ALEN); |
40f6cff5 AV |
2991 | cmd.data0 = ntohl(data[0]); |
2992 | cmd.data1 = ntohl(data[1]); | |
85a7ea1b BG |
2993 | err = myri10ge_send_cmd(mgp, MXGEFW_JOIN_MULTICAST_GROUP, |
2994 | &cmd, 1); | |
2995 | ||
2996 | if (err != 0) { | |
78ca90ea | 2997 | netdev_err(dev, "Failed MXGEFW_JOIN_MULTICAST_GROUP, error status:%d %pM\n", |
22bedad3 | 2998 | err, ha->addr); |
85a7ea1b BG |
2999 | goto abort; |
3000 | } | |
3001 | } | |
3002 | /* Enable multicast filtering */ | |
3003 | err = myri10ge_send_cmd(mgp, MXGEFW_DISABLE_ALLMULTI, &cmd, 1); | |
3004 | if (err != 0) { | |
78ca90ea JP |
3005 | netdev_err(dev, "Failed MXGEFW_DISABLE_ALLMULTI, error status: %d\n", |
3006 | err); | |
85a7ea1b BG |
3007 | goto abort; |
3008 | } | |
3009 | ||
3010 | return; | |
3011 | ||
3012 | abort: | |
3013 | return; | |
0da34b6d BG |
3014 | } |
3015 | ||
3016 | static int myri10ge_set_mac_address(struct net_device *dev, void *addr) | |
3017 | { | |
3018 | struct sockaddr *sa = addr; | |
3019 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
3020 | int status; | |
3021 | ||
3022 | if (!is_valid_ether_addr(sa->sa_data)) | |
3023 | return -EADDRNOTAVAIL; | |
3024 | ||
3025 | status = myri10ge_update_mac_address(mgp, sa->sa_data); | |
3026 | if (status != 0) { | |
78ca90ea JP |
3027 | netdev_err(dev, "changing mac address failed with %d\n", |
3028 | status); | |
0da34b6d BG |
3029 | return status; |
3030 | } | |
3031 | ||
3032 | /* change the dev structure */ | |
d458cdf7 | 3033 | memcpy(dev->dev_addr, sa->sa_data, ETH_ALEN); |
0da34b6d BG |
3034 | return 0; |
3035 | } | |
3036 | ||
3037 | static int myri10ge_change_mtu(struct net_device *dev, int new_mtu) | |
3038 | { | |
3039 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
3040 | int error = 0; | |
3041 | ||
78ca90ea | 3042 | netdev_info(dev, "changing mtu from %d to %d\n", dev->mtu, new_mtu); |
0da34b6d BG |
3043 | if (mgp->running) { |
3044 | /* if we change the mtu on an active device, we must | |
3045 | * reset the device so the firmware sees the change */ | |
3046 | myri10ge_close(dev); | |
3047 | dev->mtu = new_mtu; | |
3048 | myri10ge_open(dev); | |
3049 | } else | |
3050 | dev->mtu = new_mtu; | |
3051 | ||
3052 | return error; | |
3053 | } | |
3054 | ||
3055 | /* | |
3056 | * Enable ECRC to align PCI-E Completion packets on an 8-byte boundary. | |
3057 | * Only do it if the bridge is a root port since we don't want to disturb | |
3058 | * any other device, except if forced with myri10ge_ecrc_enable > 1. | |
3059 | */ | |
3060 | ||
0da34b6d BG |
3061 | static void myri10ge_enable_ecrc(struct myri10ge_priv *mgp) |
3062 | { | |
3063 | struct pci_dev *bridge = mgp->pdev->bus->self; | |
3064 | struct device *dev = &mgp->pdev->dev; | |
effd1eda | 3065 | int cap; |
0da34b6d | 3066 | unsigned err_cap; |
0da34b6d BG |
3067 | int ret; |
3068 | ||
3069 | if (!myri10ge_ecrc_enable || !bridge) | |
3070 | return; | |
3071 | ||
3072 | /* check that the bridge is a root port */ | |
9503e255 | 3073 | if (pci_pcie_type(bridge) != PCI_EXP_TYPE_ROOT_PORT) { |
0da34b6d | 3074 | if (myri10ge_ecrc_enable > 1) { |
eca3fd83 | 3075 | struct pci_dev *prev_bridge, *old_bridge = bridge; |
0da34b6d BG |
3076 | |
3077 | /* Walk the hierarchy up to the root port | |
3078 | * where ECRC has to be enabled */ | |
3079 | do { | |
eca3fd83 | 3080 | prev_bridge = bridge; |
0da34b6d | 3081 | bridge = bridge->bus->self; |
eca3fd83 | 3082 | if (!bridge || prev_bridge == bridge) { |
0da34b6d BG |
3083 | dev_err(dev, |
3084 | "Failed to find root port" | |
3085 | " to force ECRC\n"); | |
3086 | return; | |
3087 | } | |
9503e255 JL |
3088 | } while (pci_pcie_type(bridge) != |
3089 | PCI_EXP_TYPE_ROOT_PORT); | |
0da34b6d BG |
3090 | |
3091 | dev_info(dev, | |
3092 | "Forcing ECRC on non-root port %s" | |
3093 | " (enabling on root port %s)\n", | |
3094 | pci_name(old_bridge), pci_name(bridge)); | |
3095 | } else { | |
3096 | dev_err(dev, | |
3097 | "Not enabling ECRC on non-root port %s\n", | |
3098 | pci_name(bridge)); | |
3099 | return; | |
3100 | } | |
3101 | } | |
3102 | ||
3103 | cap = pci_find_ext_capability(bridge, PCI_EXT_CAP_ID_ERR); | |
0da34b6d BG |
3104 | if (!cap) |
3105 | return; | |
3106 | ||
3107 | ret = pci_read_config_dword(bridge, cap + PCI_ERR_CAP, &err_cap); | |
3108 | if (ret) { | |
3109 | dev_err(dev, "failed reading ext-conf-space of %s\n", | |
3110 | pci_name(bridge)); | |
3111 | dev_err(dev, "\t pci=nommconf in use? " | |
3112 | "or buggy/incomplete/absent ACPI MCFG attr?\n"); | |
3113 | return; | |
3114 | } | |
3115 | if (!(err_cap & PCI_ERR_CAP_ECRC_GENC)) | |
3116 | return; | |
3117 | ||
3118 | err_cap |= PCI_ERR_CAP_ECRC_GENE; | |
3119 | pci_write_config_dword(bridge, cap + PCI_ERR_CAP, err_cap); | |
3120 | dev_info(dev, "Enabled ECRC on upstream bridge %s\n", pci_name(bridge)); | |
0da34b6d BG |
3121 | } |
3122 | ||
3123 | /* | |
3124 | * The Lanai Z8E PCI-E interface achieves higher Read-DMA throughput | |
3125 | * when the PCI-E Completion packets are aligned on an 8-byte | |
3126 | * boundary. Some PCI-E chip sets always align Completion packets; on | |
3127 | * the ones that do not, the alignment can be enforced by enabling | |
3128 | * ECRC generation (if supported). | |
3129 | * | |
3130 | * When PCI-E Completion packets are not aligned, it is actually more | |
3131 | * efficient to limit Read-DMA transactions to 2KB, rather than 4KB. | |
3132 | * | |
3133 | * If the driver can neither enable ECRC nor verify that it has | |
3134 | * already been enabled, then it must use a firmware image which works | |
0dcffac1 | 3135 | * around unaligned completion packets (myri10ge_rss_ethp_z8e.dat), and it |
0da34b6d | 3136 | * should also ensure that it never gives the device a Read-DMA which is |
b53bef84 | 3137 | * larger than 2KB by setting the tx_boundary to 2KB. If ECRC is |
0dcffac1 | 3138 | * enabled, then the driver should use the aligned (myri10ge_rss_eth_z8e.dat) |
b53bef84 | 3139 | * firmware image, and set tx_boundary to 4KB. |
0da34b6d BG |
3140 | */ |
3141 | ||
5443e9ea | 3142 | static void myri10ge_firmware_probe(struct myri10ge_priv *mgp) |
0da34b6d | 3143 | { |
5443e9ea BG |
3144 | struct pci_dev *pdev = mgp->pdev; |
3145 | struct device *dev = &pdev->dev; | |
302d242c | 3146 | int status; |
0da34b6d | 3147 | |
b53bef84 | 3148 | mgp->tx_boundary = 4096; |
5443e9ea BG |
3149 | /* |
3150 | * Verify the max read request size was set to 4KB | |
3151 | * before trying the test with 4KB. | |
3152 | */ | |
302d242c BG |
3153 | status = pcie_get_readrq(pdev); |
3154 | if (status < 0) { | |
5443e9ea BG |
3155 | dev_err(dev, "Couldn't read max read req size: %d\n", status); |
3156 | goto abort; | |
3157 | } | |
302d242c BG |
3158 | if (status != 4096) { |
3159 | dev_warn(dev, "Max Read Request size != 4096 (%d)\n", status); | |
b53bef84 | 3160 | mgp->tx_boundary = 2048; |
5443e9ea BG |
3161 | } |
3162 | /* | |
3163 | * load the optimized firmware (which assumes aligned PCIe | |
3164 | * completions) in order to see if it works on this host. | |
3165 | */ | |
7d351035 | 3166 | set_fw_name(mgp, myri10ge_fw_aligned, false); |
0dcffac1 | 3167 | status = myri10ge_load_firmware(mgp, 1); |
5443e9ea BG |
3168 | if (status != 0) { |
3169 | goto abort; | |
3170 | } | |
3171 | ||
3172 | /* | |
3173 | * Enable ECRC if possible | |
3174 | */ | |
3175 | myri10ge_enable_ecrc(mgp); | |
3176 | ||
3177 | /* | |
3178 | * Run a DMA test which watches for unaligned completions and | |
3179 | * aborts on the first one seen. | |
3180 | */ | |
3181 | ||
3182 | status = myri10ge_dma_test(mgp, MXGEFW_CMD_UNALIGNED_TEST); | |
3183 | if (status == 0) | |
3184 | return; /* keep the aligned firmware */ | |
3185 | ||
3186 | if (status != -E2BIG) | |
3187 | dev_warn(dev, "DMA test failed: %d\n", status); | |
3188 | if (status == -ENOSYS) | |
3189 | dev_warn(dev, "Falling back to ethp! " | |
3190 | "Please install up to date fw\n"); | |
3191 | abort: | |
3192 | /* fall back to using the unaligned firmware */ | |
b53bef84 | 3193 | mgp->tx_boundary = 2048; |
7d351035 | 3194 | set_fw_name(mgp, myri10ge_fw_unaligned, false); |
5443e9ea BG |
3195 | } |
3196 | ||
3197 | static void myri10ge_select_firmware(struct myri10ge_priv *mgp) | |
3198 | { | |
2d90b0aa BG |
3199 | int overridden = 0; |
3200 | ||
0da34b6d | 3201 | if (myri10ge_force_firmware == 0) { |
9503e255 | 3202 | int link_width; |
ce7f9368 BG |
3203 | u16 lnk; |
3204 | ||
9503e255 | 3205 | pcie_capability_read_word(mgp->pdev, PCI_EXP_LNKSTA, &lnk); |
ce7f9368 BG |
3206 | link_width = (lnk >> 4) & 0x3f; |
3207 | ||
ce7f9368 BG |
3208 | /* Check to see if Link is less than 8 or if the |
3209 | * upstream bridge is known to provide aligned | |
3210 | * completions */ | |
3211 | if (link_width < 8) { | |
3212 | dev_info(&mgp->pdev->dev, "PCIE x%d Link\n", | |
3213 | link_width); | |
b53bef84 | 3214 | mgp->tx_boundary = 4096; |
7d351035 | 3215 | set_fw_name(mgp, myri10ge_fw_aligned, false); |
5443e9ea BG |
3216 | } else { |
3217 | myri10ge_firmware_probe(mgp); | |
0da34b6d BG |
3218 | } |
3219 | } else { | |
3220 | if (myri10ge_force_firmware == 1) { | |
3221 | dev_info(&mgp->pdev->dev, | |
3222 | "Assuming aligned completions (forced)\n"); | |
b53bef84 | 3223 | mgp->tx_boundary = 4096; |
7d351035 | 3224 | set_fw_name(mgp, myri10ge_fw_aligned, false); |
0da34b6d BG |
3225 | } else { |
3226 | dev_info(&mgp->pdev->dev, | |
3227 | "Assuming unaligned completions (forced)\n"); | |
b53bef84 | 3228 | mgp->tx_boundary = 2048; |
7d351035 | 3229 | set_fw_name(mgp, myri10ge_fw_unaligned, false); |
0da34b6d BG |
3230 | } |
3231 | } | |
7d351035 | 3232 | |
b51d23e4 | 3233 | kernel_param_lock(THIS_MODULE); |
0da34b6d | 3234 | if (myri10ge_fw_name != NULL) { |
7d351035 RR |
3235 | char *fw_name = kstrdup(myri10ge_fw_name, GFP_KERNEL); |
3236 | if (fw_name) { | |
3237 | overridden = 1; | |
3238 | set_fw_name(mgp, fw_name, true); | |
3239 | } | |
0da34b6d | 3240 | } |
b51d23e4 | 3241 | kernel_param_unlock(THIS_MODULE); |
7d351035 | 3242 | |
2d90b0aa BG |
3243 | if (mgp->board_number < MYRI10GE_MAX_BOARDS && |
3244 | myri10ge_fw_names[mgp->board_number] != NULL && | |
3245 | strlen(myri10ge_fw_names[mgp->board_number])) { | |
7d351035 | 3246 | set_fw_name(mgp, myri10ge_fw_names[mgp->board_number], false); |
2d90b0aa BG |
3247 | overridden = 1; |
3248 | } | |
3249 | if (overridden) | |
3250 | dev_info(&mgp->pdev->dev, "overriding firmware to %s\n", | |
3251 | mgp->fw_name); | |
0da34b6d BG |
3252 | } |
3253 | ||
7539a613 JM |
3254 | static void myri10ge_mask_surprise_down(struct pci_dev *pdev) |
3255 | { | |
3256 | struct pci_dev *bridge = pdev->bus->self; | |
3257 | int cap; | |
3258 | u32 mask; | |
3259 | ||
3260 | if (bridge == NULL) | |
3261 | return; | |
3262 | ||
3263 | cap = pci_find_ext_capability(bridge, PCI_EXT_CAP_ID_ERR); | |
3264 | if (cap) { | |
3265 | /* a sram parity error can cause a surprise link | |
3266 | * down; since we expect and can recover from sram | |
3267 | * parity errors, mask surprise link down events */ | |
3268 | pci_read_config_dword(bridge, cap + PCI_ERR_UNCOR_MASK, &mask); | |
3269 | mask |= 0x20; | |
3270 | pci_write_config_dword(bridge, cap + PCI_ERR_UNCOR_MASK, mask); | |
3271 | } | |
3272 | } | |
3273 | ||
0da34b6d | 3274 | #ifdef CONFIG_PM |
0da34b6d BG |
3275 | static int myri10ge_suspend(struct pci_dev *pdev, pm_message_t state) |
3276 | { | |
3277 | struct myri10ge_priv *mgp; | |
3278 | struct net_device *netdev; | |
3279 | ||
3280 | mgp = pci_get_drvdata(pdev); | |
3281 | if (mgp == NULL) | |
3282 | return -EINVAL; | |
3283 | netdev = mgp->dev; | |
3284 | ||
3285 | netif_device_detach(netdev); | |
3286 | if (netif_running(netdev)) { | |
78ca90ea | 3287 | netdev_info(netdev, "closing\n"); |
0da34b6d BG |
3288 | rtnl_lock(); |
3289 | myri10ge_close(netdev); | |
3290 | rtnl_unlock(); | |
3291 | } | |
3292 | myri10ge_dummy_rdma(mgp, 0); | |
83f6e152 | 3293 | pci_save_state(pdev); |
0da34b6d | 3294 | pci_disable_device(pdev); |
1a63e846 BG |
3295 | |
3296 | return pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
0da34b6d BG |
3297 | } |
3298 | ||
3299 | static int myri10ge_resume(struct pci_dev *pdev) | |
3300 | { | |
3301 | struct myri10ge_priv *mgp; | |
3302 | struct net_device *netdev; | |
3303 | int status; | |
3304 | u16 vendor; | |
3305 | ||
3306 | mgp = pci_get_drvdata(pdev); | |
3307 | if (mgp == NULL) | |
3308 | return -EINVAL; | |
3309 | netdev = mgp->dev; | |
1ca01512 | 3310 | pci_set_power_state(pdev, PCI_D0); /* zeros conf space as a side effect */ |
0da34b6d BG |
3311 | msleep(5); /* give card time to respond */ |
3312 | pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor); | |
3313 | if (vendor == 0xffff) { | |
78ca90ea | 3314 | netdev_err(mgp->dev, "device disappeared!\n"); |
0da34b6d BG |
3315 | return -EIO; |
3316 | } | |
83f6e152 | 3317 | |
1d3c16a8 | 3318 | pci_restore_state(pdev); |
4c2248cc BG |
3319 | |
3320 | status = pci_enable_device(pdev); | |
1a63e846 | 3321 | if (status) { |
4c2248cc | 3322 | dev_err(&pdev->dev, "failed to enable device\n"); |
1a63e846 | 3323 | return status; |
4c2248cc BG |
3324 | } |
3325 | ||
0da34b6d BG |
3326 | pci_set_master(pdev); |
3327 | ||
0da34b6d | 3328 | myri10ge_reset(mgp); |
013b68bf | 3329 | myri10ge_dummy_rdma(mgp, 1); |
0da34b6d BG |
3330 | |
3331 | /* Save configuration space to be restored if the | |
3332 | * nic resets due to a parity error */ | |
83f6e152 | 3333 | pci_save_state(pdev); |
0da34b6d BG |
3334 | |
3335 | if (netif_running(netdev)) { | |
3336 | rtnl_lock(); | |
df30a740 | 3337 | status = myri10ge_open(netdev); |
0da34b6d | 3338 | rtnl_unlock(); |
df30a740 BG |
3339 | if (status != 0) |
3340 | goto abort_with_enabled; | |
3341 | ||
0da34b6d BG |
3342 | } |
3343 | netif_device_attach(netdev); | |
3344 | ||
3345 | return 0; | |
3346 | ||
4c2248cc BG |
3347 | abort_with_enabled: |
3348 | pci_disable_device(pdev); | |
0da34b6d BG |
3349 | return -EIO; |
3350 | ||
3351 | } | |
0da34b6d BG |
3352 | #endif /* CONFIG_PM */ |
3353 | ||
3354 | static u32 myri10ge_read_reboot(struct myri10ge_priv *mgp) | |
3355 | { | |
3356 | struct pci_dev *pdev = mgp->pdev; | |
3357 | int vs = mgp->vendor_specific_offset; | |
3358 | u32 reboot; | |
3359 | ||
3360 | /*enter read32 mode */ | |
3361 | pci_write_config_byte(pdev, vs + 0x10, 0x3); | |
3362 | ||
3363 | /*read REBOOT_STATUS (0xfffffff0) */ | |
3364 | pci_write_config_dword(pdev, vs + 0x18, 0xfffffff0); | |
3365 | pci_read_config_dword(pdev, vs + 0x14, &reboot); | |
3366 | return reboot; | |
3367 | } | |
3368 | ||
c689b81b JM |
3369 | static void |
3370 | myri10ge_check_slice(struct myri10ge_slice_state *ss, int *reset_needed, | |
3371 | int *busy_slice_cnt, u32 rx_pause_cnt) | |
3372 | { | |
3373 | struct myri10ge_priv *mgp = ss->mgp; | |
3374 | int slice = ss - mgp->ss; | |
3375 | ||
3376 | if (ss->tx.req != ss->tx.done && | |
3377 | ss->tx.done == ss->watchdog_tx_done && | |
3378 | ss->watchdog_tx_req != ss->watchdog_tx_done) { | |
3379 | /* nic seems like it might be stuck.. */ | |
3380 | if (rx_pause_cnt != mgp->watchdog_pause) { | |
3381 | if (net_ratelimit()) | |
3382 | netdev_warn(mgp->dev, "slice %d: TX paused, " | |
3383 | "check link partner\n", slice); | |
3384 | } else { | |
3385 | netdev_warn(mgp->dev, | |
3386 | "slice %d: TX stuck %d %d %d %d %d %d\n", | |
3387 | slice, ss->tx.queue_active, ss->tx.req, | |
3388 | ss->tx.done, ss->tx.pkt_start, | |
3389 | ss->tx.pkt_done, | |
3390 | (int)ntohl(mgp->ss[slice].fw_stats-> | |
3391 | send_done_count)); | |
3392 | *reset_needed = 1; | |
3393 | ss->stuck = 1; | |
3394 | } | |
3395 | } | |
3396 | if (ss->watchdog_tx_done != ss->tx.done || | |
3397 | ss->watchdog_rx_done != ss->rx_done.cnt) { | |
3398 | *busy_slice_cnt += 1; | |
3399 | } | |
3400 | ss->watchdog_tx_done = ss->tx.done; | |
3401 | ss->watchdog_tx_req = ss->tx.req; | |
3402 | ss->watchdog_rx_done = ss->rx_done.cnt; | |
3403 | } | |
3404 | ||
0da34b6d BG |
3405 | /* |
3406 | * This watchdog is used to check whether the board has suffered | |
3407 | * from a parity error and needs to be recovered. | |
3408 | */ | |
c4028958 | 3409 | static void myri10ge_watchdog(struct work_struct *work) |
0da34b6d | 3410 | { |
c4028958 | 3411 | struct myri10ge_priv *mgp = |
6250223e | 3412 | container_of(work, struct myri10ge_priv, watchdog_work); |
c689b81b JM |
3413 | struct myri10ge_slice_state *ss; |
3414 | u32 reboot, rx_pause_cnt; | |
d0234215 | 3415 | int status, rebooted; |
0dcffac1 | 3416 | int i; |
c689b81b JM |
3417 | int reset_needed = 0; |
3418 | int busy_slice_cnt = 0; | |
0da34b6d BG |
3419 | u16 cmd, vendor; |
3420 | ||
3421 | mgp->watchdog_resets++; | |
3422 | pci_read_config_word(mgp->pdev, PCI_COMMAND, &cmd); | |
d0234215 | 3423 | rebooted = 0; |
0da34b6d BG |
3424 | if ((cmd & PCI_COMMAND_MASTER) == 0) { |
3425 | /* Bus master DMA disabled? Check to see | |
3426 | * if the card rebooted due to a parity error | |
3427 | * For now, just report it */ | |
3428 | reboot = myri10ge_read_reboot(mgp); | |
78ca90ea | 3429 | netdev_err(mgp->dev, "NIC rebooted (0x%x),%s resetting\n", |
c689b81b | 3430 | reboot, myri10ge_reset_recover ? "" : " not"); |
f181137f BG |
3431 | if (myri10ge_reset_recover == 0) |
3432 | return; | |
d0234215 BG |
3433 | rtnl_lock(); |
3434 | mgp->rebooted = 1; | |
3435 | rebooted = 1; | |
3436 | myri10ge_close(mgp->dev); | |
f181137f | 3437 | myri10ge_reset_recover--; |
d0234215 | 3438 | mgp->rebooted = 0; |
0da34b6d BG |
3439 | /* |
3440 | * A rebooted nic will come back with config space as | |
3441 | * it was after power was applied to PCIe bus. | |
3442 | * Attempt to restore config space which was saved | |
3443 | * when the driver was loaded, or the last time the | |
3444 | * nic was resumed from power saving mode. | |
3445 | */ | |
83f6e152 | 3446 | pci_restore_state(mgp->pdev); |
7adda30c BG |
3447 | |
3448 | /* save state again for accounting reasons */ | |
83f6e152 | 3449 | pci_save_state(mgp->pdev); |
7adda30c | 3450 | |
0da34b6d BG |
3451 | } else { |
3452 | /* if we get back -1's from our slot, perhaps somebody | |
3453 | * powered off our card. Don't try to reset it in | |
3454 | * this case */ | |
3455 | if (cmd == 0xffff) { | |
3456 | pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor); | |
3457 | if (vendor == 0xffff) { | |
78ca90ea | 3458 | netdev_err(mgp->dev, "device disappeared!\n"); |
0da34b6d BG |
3459 | return; |
3460 | } | |
3461 | } | |
c689b81b JM |
3462 | /* Perhaps it is a software error. See if stuck slice |
3463 | * has recovered, reset if not */ | |
3464 | rx_pause_cnt = ntohl(mgp->ss[0].fw_stats->dropped_pause); | |
0dcffac1 | 3465 | for (i = 0; i < mgp->num_slices; i++) { |
c689b81b JM |
3466 | ss = mgp->ss; |
3467 | if (ss->stuck) { | |
3468 | myri10ge_check_slice(ss, &reset_needed, | |
3469 | &busy_slice_cnt, | |
3470 | rx_pause_cnt); | |
3471 | ss->stuck = 0; | |
3472 | } | |
0dcffac1 | 3473 | } |
c689b81b JM |
3474 | if (!reset_needed) { |
3475 | netdev_dbg(mgp->dev, "not resetting\n"); | |
3476 | return; | |
3477 | } | |
3478 | ||
3479 | netdev_err(mgp->dev, "device timeout, resetting\n"); | |
0da34b6d | 3480 | } |
236bb5e6 | 3481 | |
d0234215 BG |
3482 | if (!rebooted) { |
3483 | rtnl_lock(); | |
3484 | myri10ge_close(mgp->dev); | |
3485 | } | |
0dcffac1 | 3486 | status = myri10ge_load_firmware(mgp, 1); |
0da34b6d | 3487 | if (status != 0) |
78ca90ea | 3488 | netdev_err(mgp->dev, "failed to load firmware\n"); |
0da34b6d BG |
3489 | else |
3490 | myri10ge_open(mgp->dev); | |
3491 | rtnl_unlock(); | |
3492 | } | |
3493 | ||
3494 | /* | |
3495 | * We use our own timer routine rather than relying upon | |
3496 | * netdev->tx_timeout because we have a very large hardware transmit | |
3497 | * queue. Due to the large queue, the netdev->tx_timeout function | |
3498 | * cannot detect a NIC with a parity error in a timely fashion if the | |
3499 | * NIC is lightly loaded. | |
3500 | */ | |
e99e88a9 | 3501 | static void myri10ge_watchdog_timer(struct timer_list *t) |
0da34b6d BG |
3502 | { |
3503 | struct myri10ge_priv *mgp; | |
b53bef84 | 3504 | struct myri10ge_slice_state *ss; |
d0234215 | 3505 | int i, reset_needed, busy_slice_cnt; |
626fda94 | 3506 | u32 rx_pause_cnt; |
d0234215 | 3507 | u16 cmd; |
0da34b6d | 3508 | |
e99e88a9 | 3509 | mgp = from_timer(mgp, t, watchdog_timer); |
c7dab99b | 3510 | |
0dcffac1 | 3511 | rx_pause_cnt = ntohl(mgp->ss[0].fw_stats->dropped_pause); |
d0234215 | 3512 | busy_slice_cnt = 0; |
0dcffac1 BG |
3513 | for (i = 0, reset_needed = 0; |
3514 | i < mgp->num_slices && reset_needed == 0; ++i) { | |
b53bef84 | 3515 | |
0dcffac1 BG |
3516 | ss = &mgp->ss[i]; |
3517 | if (ss->rx_small.watchdog_needed) { | |
3518 | myri10ge_alloc_rx_pages(mgp, &ss->rx_small, | |
3519 | mgp->small_bytes + MXGEFW_PAD, | |
3520 | 1); | |
3521 | if (ss->rx_small.fill_cnt - ss->rx_small.cnt >= | |
3522 | myri10ge_fill_thresh) | |
3523 | ss->rx_small.watchdog_needed = 0; | |
3524 | } | |
3525 | if (ss->rx_big.watchdog_needed) { | |
3526 | myri10ge_alloc_rx_pages(mgp, &ss->rx_big, | |
3527 | mgp->big_bytes, 1); | |
3528 | if (ss->rx_big.fill_cnt - ss->rx_big.cnt >= | |
3529 | myri10ge_fill_thresh) | |
3530 | ss->rx_big.watchdog_needed = 0; | |
3531 | } | |
c689b81b JM |
3532 | myri10ge_check_slice(ss, &reset_needed, &busy_slice_cnt, |
3533 | rx_pause_cnt); | |
d0234215 BG |
3534 | } |
3535 | /* if we've sent or received no traffic, poll the NIC to | |
3536 | * ensure it is still there. Otherwise, we risk not noticing | |
3537 | * an error in a timely fashion */ | |
3538 | if (busy_slice_cnt == 0) { | |
3539 | pci_read_config_word(mgp->pdev, PCI_COMMAND, &cmd); | |
3540 | if ((cmd & PCI_COMMAND_MASTER) == 0) { | |
3541 | reset_needed = 1; | |
3542 | } | |
626fda94 | 3543 | } |
626fda94 | 3544 | mgp->watchdog_pause = rx_pause_cnt; |
0dcffac1 BG |
3545 | |
3546 | if (reset_needed) { | |
3547 | schedule_work(&mgp->watchdog_work); | |
3548 | } else { | |
3549 | /* rearm timer */ | |
3550 | mod_timer(&mgp->watchdog_timer, | |
3551 | jiffies + myri10ge_watchdog_timeout * HZ); | |
3552 | } | |
0da34b6d BG |
3553 | } |
3554 | ||
77929732 BG |
3555 | static void myri10ge_free_slices(struct myri10ge_priv *mgp) |
3556 | { | |
3557 | struct myri10ge_slice_state *ss; | |
3558 | struct pci_dev *pdev = mgp->pdev; | |
3559 | size_t bytes; | |
3560 | int i; | |
3561 | ||
3562 | if (mgp->ss == NULL) | |
3563 | return; | |
3564 | ||
3565 | for (i = 0; i < mgp->num_slices; i++) { | |
3566 | ss = &mgp->ss[i]; | |
3567 | if (ss->rx_done.entry != NULL) { | |
3568 | bytes = mgp->max_intr_slots * | |
3569 | sizeof(*ss->rx_done.entry); | |
3570 | dma_free_coherent(&pdev->dev, bytes, | |
3571 | ss->rx_done.entry, ss->rx_done.bus); | |
3572 | ss->rx_done.entry = NULL; | |
3573 | } | |
3574 | if (ss->fw_stats != NULL) { | |
3575 | bytes = sizeof(*ss->fw_stats); | |
3576 | dma_free_coherent(&pdev->dev, bytes, | |
3577 | ss->fw_stats, ss->fw_stats_bus); | |
3578 | ss->fw_stats = NULL; | |
3579 | } | |
0dde8026 | 3580 | napi_hash_del(&ss->napi); |
b3b6ae2c | 3581 | netif_napi_del(&ss->napi); |
77929732 | 3582 | } |
0dde8026 HYK |
3583 | /* Wait till napi structs are no longer used, and then free ss. */ |
3584 | synchronize_rcu(); | |
77929732 BG |
3585 | kfree(mgp->ss); |
3586 | mgp->ss = NULL; | |
3587 | } | |
3588 | ||
3589 | static int myri10ge_alloc_slices(struct myri10ge_priv *mgp) | |
3590 | { | |
3591 | struct myri10ge_slice_state *ss; | |
3592 | struct pci_dev *pdev = mgp->pdev; | |
3593 | size_t bytes; | |
3594 | int i; | |
3595 | ||
3596 | bytes = sizeof(*mgp->ss) * mgp->num_slices; | |
3597 | mgp->ss = kzalloc(bytes, GFP_KERNEL); | |
3598 | if (mgp->ss == NULL) { | |
3599 | return -ENOMEM; | |
3600 | } | |
3601 | ||
3602 | for (i = 0; i < mgp->num_slices; i++) { | |
3603 | ss = &mgp->ss[i]; | |
3604 | bytes = mgp->max_intr_slots * sizeof(*ss->rx_done.entry); | |
750afb08 LC |
3605 | ss->rx_done.entry = dma_alloc_coherent(&pdev->dev, bytes, |
3606 | &ss->rx_done.bus, | |
3607 | GFP_KERNEL); | |
77929732 BG |
3608 | if (ss->rx_done.entry == NULL) |
3609 | goto abort; | |
77929732 BG |
3610 | bytes = sizeof(*ss->fw_stats); |
3611 | ss->fw_stats = dma_alloc_coherent(&pdev->dev, bytes, | |
3612 | &ss->fw_stats_bus, | |
3613 | GFP_KERNEL); | |
3614 | if (ss->fw_stats == NULL) | |
3615 | goto abort; | |
3616 | ss->mgp = mgp; | |
3617 | ss->dev = mgp->dev; | |
3618 | netif_napi_add(ss->dev, &ss->napi, myri10ge_poll, | |
3619 | myri10ge_napi_weight); | |
3620 | } | |
3621 | return 0; | |
3622 | abort: | |
3623 | myri10ge_free_slices(mgp); | |
3624 | return -ENOMEM; | |
3625 | } | |
3626 | ||
3627 | /* | |
3628 | * This function determines the number of slices supported. | |
25985edc | 3629 | * The number slices is the minimum of the number of CPUS, |
77929732 BG |
3630 | * the number of MSI-X irqs supported, the number of slices |
3631 | * supported by the firmware | |
3632 | */ | |
3633 | static void myri10ge_probe_slices(struct myri10ge_priv *mgp) | |
3634 | { | |
3635 | struct myri10ge_cmd cmd; | |
3636 | struct pci_dev *pdev = mgp->pdev; | |
3637 | char *old_fw; | |
7d351035 | 3638 | bool old_allocated; |
40b29562 | 3639 | int i, status, ncpus; |
77929732 BG |
3640 | |
3641 | mgp->num_slices = 1; | |
98f2d21f | 3642 | ncpus = netif_get_num_default_rss_queues(); |
77929732 | 3643 | |
40b29562 | 3644 | if (myri10ge_max_slices == 1 || !pdev->msix_cap || |
77929732 BG |
3645 | (myri10ge_max_slices == -1 && ncpus < 2)) |
3646 | return; | |
3647 | ||
3648 | /* try to load the slice aware rss firmware */ | |
3649 | old_fw = mgp->fw_name; | |
7d351035 RR |
3650 | old_allocated = mgp->fw_name_allocated; |
3651 | /* don't free old_fw if we override it. */ | |
3652 | mgp->fw_name_allocated = false; | |
3653 | ||
13b2738c BG |
3654 | if (myri10ge_fw_name != NULL) { |
3655 | dev_info(&mgp->pdev->dev, "overriding rss firmware to %s\n", | |
3656 | myri10ge_fw_name); | |
7d351035 | 3657 | set_fw_name(mgp, myri10ge_fw_name, false); |
13b2738c | 3658 | } else if (old_fw == myri10ge_fw_aligned) |
7d351035 | 3659 | set_fw_name(mgp, myri10ge_fw_rss_aligned, false); |
77929732 | 3660 | else |
7d351035 | 3661 | set_fw_name(mgp, myri10ge_fw_rss_unaligned, false); |
77929732 BG |
3662 | status = myri10ge_load_firmware(mgp, 0); |
3663 | if (status != 0) { | |
3664 | dev_info(&pdev->dev, "Rss firmware not found\n"); | |
7d351035 RR |
3665 | if (old_allocated) |
3666 | kfree(old_fw); | |
77929732 BG |
3667 | return; |
3668 | } | |
3669 | ||
3670 | /* hit the board with a reset to ensure it is alive */ | |
3671 | memset(&cmd, 0, sizeof(cmd)); | |
3672 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_RESET, &cmd, 0); | |
3673 | if (status != 0) { | |
3674 | dev_err(&mgp->pdev->dev, "failed reset\n"); | |
3675 | goto abort_with_fw; | |
77929732 BG |
3676 | } |
3677 | ||
3678 | mgp->max_intr_slots = cmd.data0 / sizeof(struct mcp_slot); | |
3679 | ||
3680 | /* tell it the size of the interrupt queues */ | |
3681 | cmd.data0 = mgp->max_intr_slots * sizeof(struct mcp_slot); | |
3682 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_SIZE, &cmd, 0); | |
3683 | if (status != 0) { | |
3684 | dev_err(&mgp->pdev->dev, "failed MXGEFW_CMD_SET_INTRQ_SIZE\n"); | |
3685 | goto abort_with_fw; | |
3686 | } | |
3687 | ||
3688 | /* ask the maximum number of slices it supports */ | |
3689 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_RSS_QUEUES, &cmd, 0); | |
3690 | if (status != 0) | |
3691 | goto abort_with_fw; | |
3692 | else | |
3693 | mgp->num_slices = cmd.data0; | |
3694 | ||
3695 | /* Only allow multiple slices if MSI-X is usable */ | |
3696 | if (!myri10ge_msi) { | |
3697 | goto abort_with_fw; | |
3698 | } | |
3699 | ||
3700 | /* if the admin did not specify a limit to how many | |
3701 | * slices we should use, cap it automatically to the | |
3702 | * number of CPUs currently online */ | |
3703 | if (myri10ge_max_slices == -1) | |
3704 | myri10ge_max_slices = ncpus; | |
3705 | ||
3706 | if (mgp->num_slices > myri10ge_max_slices) | |
3707 | mgp->num_slices = myri10ge_max_slices; | |
3708 | ||
3709 | /* Now try to allocate as many MSI-X vectors as we have | |
3710 | * slices. We give up on MSI-X if we can only get a single | |
3711 | * vector. */ | |
3712 | ||
baeb2ffa JP |
3713 | mgp->msix_vectors = kcalloc(mgp->num_slices, sizeof(*mgp->msix_vectors), |
3714 | GFP_KERNEL); | |
77929732 | 3715 | if (mgp->msix_vectors == NULL) |
0729cc0c | 3716 | goto no_msix; |
77929732 BG |
3717 | for (i = 0; i < mgp->num_slices; i++) { |
3718 | mgp->msix_vectors[i].entry = i; | |
3719 | } | |
3720 | ||
3721 | while (mgp->num_slices > 1) { | |
0729cc0c | 3722 | mgp->num_slices = rounddown_pow_of_two(mgp->num_slices); |
77929732 | 3723 | if (mgp->num_slices == 1) |
0729cc0c AG |
3724 | goto no_msix; |
3725 | status = pci_enable_msix_range(pdev, | |
3726 | mgp->msix_vectors, | |
3727 | mgp->num_slices, | |
3728 | mgp->num_slices); | |
3729 | if (status < 0) | |
3730 | goto no_msix; | |
3731 | ||
3732 | pci_disable_msix(pdev); | |
3733 | ||
3734 | if (status == mgp->num_slices) { | |
7d351035 RR |
3735 | if (old_allocated) |
3736 | kfree(old_fw); | |
77929732 | 3737 | return; |
0729cc0c | 3738 | } else { |
77929732 | 3739 | mgp->num_slices = status; |
0729cc0c | 3740 | } |
77929732 BG |
3741 | } |
3742 | ||
0729cc0c | 3743 | no_msix: |
77929732 BG |
3744 | if (mgp->msix_vectors != NULL) { |
3745 | kfree(mgp->msix_vectors); | |
3746 | mgp->msix_vectors = NULL; | |
3747 | } | |
3748 | ||
3749 | abort_with_fw: | |
3750 | mgp->num_slices = 1; | |
7d351035 | 3751 | set_fw_name(mgp, old_fw, old_allocated); |
77929732 BG |
3752 | myri10ge_load_firmware(mgp, 0); |
3753 | } | |
77929732 | 3754 | |
8126089f SH |
3755 | static const struct net_device_ops myri10ge_netdev_ops = { |
3756 | .ndo_open = myri10ge_open, | |
3757 | .ndo_stop = myri10ge_close, | |
3758 | .ndo_start_xmit = myri10ge_xmit, | |
c5f7ef72 | 3759 | .ndo_get_stats64 = myri10ge_get_stats, |
8126089f SH |
3760 | .ndo_validate_addr = eth_validate_addr, |
3761 | .ndo_change_mtu = myri10ge_change_mtu, | |
afc4b13d | 3762 | .ndo_set_rx_mode = myri10ge_set_multicast_list, |
8126089f SH |
3763 | .ndo_set_mac_address = myri10ge_set_mac_address, |
3764 | }; | |
3765 | ||
0da34b6d BG |
3766 | static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
3767 | { | |
3768 | struct net_device *netdev; | |
3769 | struct myri10ge_priv *mgp; | |
3770 | struct device *dev = &pdev->dev; | |
0da34b6d BG |
3771 | int i; |
3772 | int status = -ENXIO; | |
0da34b6d | 3773 | int dac_enabled; |
00b5e505 | 3774 | unsigned hdr_offset, ss_offset; |
2d90b0aa | 3775 | static int board_number; |
0da34b6d | 3776 | |
236bb5e6 | 3777 | netdev = alloc_etherdev_mq(sizeof(*mgp), MYRI10GE_MAX_SLICES); |
41de8d4c | 3778 | if (netdev == NULL) |
0da34b6d | 3779 | return -ENOMEM; |
0da34b6d | 3780 | |
b245fb67 MH |
3781 | SET_NETDEV_DEV(netdev, &pdev->dev); |
3782 | ||
0da34b6d | 3783 | mgp = netdev_priv(netdev); |
0da34b6d BG |
3784 | mgp->dev = netdev; |
3785 | mgp->pdev = pdev; | |
0da34b6d BG |
3786 | mgp->pause = myri10ge_flow_control; |
3787 | mgp->intr_coal_delay = myri10ge_intr_coal_delay; | |
c58ac5ca | 3788 | mgp->msg_enable = netif_msg_init(myri10ge_debug, MYRI10GE_MSG_DEFAULT); |
2d90b0aa | 3789 | mgp->board_number = board_number; |
0da34b6d BG |
3790 | init_waitqueue_head(&mgp->down_wq); |
3791 | ||
3792 | if (pci_enable_device(pdev)) { | |
3793 | dev_err(&pdev->dev, "pci_enable_device call failed\n"); | |
3794 | status = -ENODEV; | |
3795 | goto abort_with_netdev; | |
3796 | } | |
0da34b6d BG |
3797 | |
3798 | /* Find the vendor-specific cap so we can check | |
3799 | * the reboot register later on */ | |
3800 | mgp->vendor_specific_offset | |
3801 | = pci_find_capability(pdev, PCI_CAP_ID_VNDR); | |
3802 | ||
3803 | /* Set our max read request to 4KB */ | |
302d242c | 3804 | status = pcie_set_readrq(pdev, 4096); |
0da34b6d BG |
3805 | if (status != 0) { |
3806 | dev_err(&pdev->dev, "Error %d writing PCI_EXP_DEVCTL\n", | |
3807 | status); | |
e3fd5534 | 3808 | goto abort_with_enabled; |
0da34b6d BG |
3809 | } |
3810 | ||
7539a613 | 3811 | myri10ge_mask_surprise_down(pdev); |
0da34b6d BG |
3812 | pci_set_master(pdev); |
3813 | dac_enabled = 1; | |
6a35528a | 3814 | status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); |
0da34b6d BG |
3815 | if (status != 0) { |
3816 | dac_enabled = 0; | |
3817 | dev_err(&pdev->dev, | |
898eb71c JP |
3818 | "64-bit pci address mask was refused, " |
3819 | "trying 32-bit\n"); | |
284901a9 | 3820 | status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
0da34b6d BG |
3821 | } |
3822 | if (status != 0) { | |
3823 | dev_err(&pdev->dev, "Error %d setting DMA mask\n", status); | |
e3fd5534 | 3824 | goto abort_with_enabled; |
0da34b6d | 3825 | } |
6a35528a | 3826 | (void)pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); |
b10c0668 BG |
3827 | mgp->cmd = dma_alloc_coherent(&pdev->dev, sizeof(*mgp->cmd), |
3828 | &mgp->cmd_bus, GFP_KERNEL); | |
f12e77ca JL |
3829 | if (!mgp->cmd) { |
3830 | status = -ENOMEM; | |
e3fd5534 | 3831 | goto abort_with_enabled; |
f12e77ca | 3832 | } |
0da34b6d | 3833 | |
0da34b6d BG |
3834 | mgp->board_span = pci_resource_len(pdev, 0); |
3835 | mgp->iomem_base = pci_resource_start(pdev, 0); | |
e4b6c303 | 3836 | mgp->wc_cookie = arch_phys_wc_add(mgp->iomem_base, mgp->board_span); |
c7f80993 | 3837 | mgp->sram = ioremap_wc(mgp->iomem_base, mgp->board_span); |
0da34b6d BG |
3838 | if (mgp->sram == NULL) { |
3839 | dev_err(&pdev->dev, "ioremap failed for %ld bytes at 0x%lx\n", | |
3840 | mgp->board_span, mgp->iomem_base); | |
3841 | status = -ENXIO; | |
c7f80993 | 3842 | goto abort_with_mtrr; |
0da34b6d | 3843 | } |
00b5e505 | 3844 | hdr_offset = |
59e955ed | 3845 | swab32(readl(mgp->sram + MCP_HEADER_PTR_OFFSET)) & 0xffffc; |
00b5e505 | 3846 | ss_offset = hdr_offset + offsetof(struct mcp_gen_header, string_specs); |
59e955ed | 3847 | mgp->sram_size = swab32(readl(mgp->sram + ss_offset)); |
00b5e505 BG |
3848 | if (mgp->sram_size > mgp->board_span || |
3849 | mgp->sram_size <= MYRI10GE_FW_OFFSET) { | |
3850 | dev_err(&pdev->dev, | |
3851 | "invalid sram_size %dB or board span %ldB\n", | |
3852 | mgp->sram_size, mgp->board_span); | |
3853 | goto abort_with_ioremap; | |
3854 | } | |
0da34b6d | 3855 | memcpy_fromio(mgp->eeprom_strings, |
00b5e505 | 3856 | mgp->sram + mgp->sram_size, MYRI10GE_EEPROM_STRINGS_SIZE); |
0da34b6d BG |
3857 | memset(mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE - 2, 0, 2); |
3858 | status = myri10ge_read_mac_addr(mgp); | |
3859 | if (status) | |
3860 | goto abort_with_ioremap; | |
3861 | ||
3862 | for (i = 0; i < ETH_ALEN; i++) | |
3863 | netdev->dev_addr[i] = mgp->mac_addr[i]; | |
3864 | ||
5443e9ea BG |
3865 | myri10ge_select_firmware(mgp); |
3866 | ||
0dcffac1 | 3867 | status = myri10ge_load_firmware(mgp, 1); |
0da34b6d BG |
3868 | if (status != 0) { |
3869 | dev_err(&pdev->dev, "failed to load firmware\n"); | |
0dcffac1 BG |
3870 | goto abort_with_ioremap; |
3871 | } | |
3872 | myri10ge_probe_slices(mgp); | |
3873 | status = myri10ge_alloc_slices(mgp); | |
3874 | if (status != 0) { | |
3875 | dev_err(&pdev->dev, "failed to alloc slice state\n"); | |
3876 | goto abort_with_firmware; | |
0da34b6d | 3877 | } |
c9920268 BH |
3878 | netif_set_real_num_tx_queues(netdev, mgp->num_slices); |
3879 | netif_set_real_num_rx_queues(netdev, mgp->num_slices); | |
0da34b6d BG |
3880 | status = myri10ge_reset(mgp); |
3881 | if (status != 0) { | |
3882 | dev_err(&pdev->dev, "failed reset\n"); | |
0dcffac1 | 3883 | goto abort_with_slices; |
0da34b6d | 3884 | } |
5dd2d332 | 3885 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
3886 | myri10ge_setup_dca(mgp); |
3887 | #endif | |
0da34b6d | 3888 | pci_set_drvdata(pdev, mgp); |
8126089f | 3889 | |
44770e11 JW |
3890 | /* MTU range: 68 - 9000 */ |
3891 | netdev->min_mtu = ETH_MIN_MTU; | |
3892 | netdev->max_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN; | |
3893 | ||
3894 | if (myri10ge_initial_mtu > netdev->max_mtu) | |
3895 | myri10ge_initial_mtu = netdev->max_mtu; | |
3896 | if (myri10ge_initial_mtu < netdev->min_mtu) | |
3897 | myri10ge_initial_mtu = netdev->min_mtu; | |
3898 | ||
0da34b6d | 3899 | netdev->mtu = myri10ge_initial_mtu; |
44770e11 JW |
3900 | |
3901 | netdev->netdev_ops = &myri10ge_netdev_ops; | |
4ca3221f | 3902 | netdev->hw_features = mgp->features | NETIF_F_RXCSUM; |
1b4c44e6 | 3903 | |
f646968f PM |
3904 | /* fake NETIF_F_HW_VLAN_CTAG_RX for good GRO performance */ |
3905 | netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX; | |
1b4c44e6 | 3906 | |
47c2cdf5 | 3907 | netdev->features = netdev->hw_features; |
236bb5e6 | 3908 | |
0da34b6d BG |
3909 | if (dac_enabled) |
3910 | netdev->features |= NETIF_F_HIGHDMA; | |
0da34b6d | 3911 | |
dddc045e BG |
3912 | netdev->vlan_features |= mgp->features; |
3913 | if (mgp->fw_ver_tiny < 37) | |
3914 | netdev->vlan_features &= ~NETIF_F_TSO6; | |
3915 | if (mgp->fw_ver_tiny < 32) | |
3916 | netdev->vlan_features &= ~NETIF_F_TSO; | |
3917 | ||
21d05db1 | 3918 | /* make sure we can get an irq, and that MSI can be |
a7425458 | 3919 | * setup (if available). */ |
21d05db1 BG |
3920 | status = myri10ge_request_irq(mgp); |
3921 | if (status != 0) | |
20fb7c7a | 3922 | goto abort_with_slices; |
21d05db1 BG |
3923 | myri10ge_free_irq(mgp); |
3924 | ||
0da34b6d BG |
3925 | /* Save configuration space to be restored if the |
3926 | * nic resets due to a parity error */ | |
83f6e152 | 3927 | pci_save_state(pdev); |
0da34b6d BG |
3928 | |
3929 | /* Setup the watchdog timer */ | |
e99e88a9 | 3930 | timer_setup(&mgp->watchdog_timer, myri10ge_watchdog_timer, 0); |
0da34b6d | 3931 | |
7ad24ea4 | 3932 | netdev->ethtool_ops = &myri10ge_ethtool_ops; |
c4028958 | 3933 | INIT_WORK(&mgp->watchdog_work, myri10ge_watchdog); |
0da34b6d BG |
3934 | status = register_netdev(netdev); |
3935 | if (status != 0) { | |
3936 | dev_err(&pdev->dev, "register_netdev failed: %d\n", status); | |
7adda30c | 3937 | goto abort_with_state; |
0da34b6d | 3938 | } |
0dcffac1 | 3939 | if (mgp->msix_enabled) |
e4b6c303 | 3940 | dev_info(dev, "%d MSI-X IRQs, tx bndry %d, fw %s, MTRR %s, WC Enabled\n", |
0dcffac1 | 3941 | mgp->num_slices, mgp->tx_boundary, mgp->fw_name, |
e4b6c303 | 3942 | (mgp->wc_cookie > 0 ? "Enabled" : "Disabled")); |
0dcffac1 | 3943 | else |
e4b6c303 | 3944 | dev_info(dev, "%s IRQ %d, tx bndry %d, fw %s, MTRR %s, WC Enabled\n", |
0dcffac1 | 3945 | mgp->msi_enabled ? "MSI" : "xPIC", |
a7425458 | 3946 | pdev->irq, mgp->tx_boundary, mgp->fw_name, |
e4b6c303 | 3947 | (mgp->wc_cookie > 0 ? "Enabled" : "Disabled")); |
0da34b6d | 3948 | |
2d90b0aa | 3949 | board_number++; |
0da34b6d BG |
3950 | return 0; |
3951 | ||
7adda30c | 3952 | abort_with_state: |
83f6e152 | 3953 | pci_restore_state(pdev); |
0da34b6d | 3954 | |
0dcffac1 BG |
3955 | abort_with_slices: |
3956 | myri10ge_free_slices(mgp); | |
3957 | ||
0da34b6d BG |
3958 | abort_with_firmware: |
3959 | myri10ge_dummy_rdma(mgp, 0); | |
3960 | ||
0da34b6d | 3961 | abort_with_ioremap: |
0f840011 BG |
3962 | if (mgp->mac_addr_string != NULL) |
3963 | dev_err(&pdev->dev, | |
3964 | "myri10ge_probe() failed: MAC=%s, SN=%ld\n", | |
3965 | mgp->mac_addr_string, mgp->serial_number); | |
0da34b6d BG |
3966 | iounmap(mgp->sram); |
3967 | ||
c7f80993 | 3968 | abort_with_mtrr: |
e4b6c303 | 3969 | arch_phys_wc_del(mgp->wc_cookie); |
b10c0668 BG |
3970 | dma_free_coherent(&pdev->dev, sizeof(*mgp->cmd), |
3971 | mgp->cmd, mgp->cmd_bus); | |
0da34b6d | 3972 | |
e3fd5534 BG |
3973 | abort_with_enabled: |
3974 | pci_disable_device(pdev); | |
0da34b6d | 3975 | |
e3fd5534 | 3976 | abort_with_netdev: |
7d351035 | 3977 | set_fw_name(mgp, NULL, false); |
0da34b6d BG |
3978 | free_netdev(netdev); |
3979 | return status; | |
3980 | } | |
3981 | ||
3982 | /* | |
3983 | * myri10ge_remove | |
3984 | * | |
3985 | * Does what is necessary to shutdown one Myrinet device. Called | |
3986 | * once for each Myrinet card by the kernel when a module is | |
3987 | * unloaded. | |
3988 | */ | |
3989 | static void myri10ge_remove(struct pci_dev *pdev) | |
3990 | { | |
3991 | struct myri10ge_priv *mgp; | |
3992 | struct net_device *netdev; | |
0da34b6d BG |
3993 | |
3994 | mgp = pci_get_drvdata(pdev); | |
3995 | if (mgp == NULL) | |
3996 | return; | |
3997 | ||
23f333a2 | 3998 | cancel_work_sync(&mgp->watchdog_work); |
0da34b6d BG |
3999 | netdev = mgp->dev; |
4000 | unregister_netdev(netdev); | |
0da34b6d | 4001 | |
5dd2d332 | 4002 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
4003 | myri10ge_teardown_dca(mgp); |
4004 | #endif | |
0da34b6d BG |
4005 | myri10ge_dummy_rdma(mgp, 0); |
4006 | ||
7adda30c | 4007 | /* avoid a memory leak */ |
83f6e152 | 4008 | pci_restore_state(pdev); |
7adda30c | 4009 | |
0da34b6d | 4010 | iounmap(mgp->sram); |
e4b6c303 | 4011 | arch_phys_wc_del(mgp->wc_cookie); |
0dcffac1 | 4012 | myri10ge_free_slices(mgp); |
2d4ad4f6 | 4013 | kfree(mgp->msix_vectors); |
b10c0668 BG |
4014 | dma_free_coherent(&pdev->dev, sizeof(*mgp->cmd), |
4015 | mgp->cmd, mgp->cmd_bus); | |
0da34b6d | 4016 | |
7d351035 | 4017 | set_fw_name(mgp, NULL, false); |
0da34b6d | 4018 | free_netdev(netdev); |
e3fd5534 | 4019 | pci_disable_device(pdev); |
0da34b6d BG |
4020 | } |
4021 | ||
b10c0668 | 4022 | #define PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E 0x0008 |
a07bc1ff | 4023 | #define PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E_9 0x0009 |
0da34b6d | 4024 | |
9baa3c34 | 4025 | static const struct pci_device_id myri10ge_pci_tbl[] = { |
b10c0668 | 4026 | {PCI_DEVICE(PCI_VENDOR_ID_MYRICOM, PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E)}, |
a07bc1ff BG |
4027 | {PCI_DEVICE |
4028 | (PCI_VENDOR_ID_MYRICOM, PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E_9)}, | |
0da34b6d BG |
4029 | {0}, |
4030 | }; | |
4031 | ||
97131079 BG |
4032 | MODULE_DEVICE_TABLE(pci, myri10ge_pci_tbl); |
4033 | ||
0da34b6d BG |
4034 | static struct pci_driver myri10ge_driver = { |
4035 | .name = "myri10ge", | |
4036 | .probe = myri10ge_probe, | |
4037 | .remove = myri10ge_remove, | |
4038 | .id_table = myri10ge_pci_tbl, | |
4039 | #ifdef CONFIG_PM | |
4040 | .suspend = myri10ge_suspend, | |
4041 | .resume = myri10ge_resume, | |
4042 | #endif | |
4043 | }; | |
4044 | ||
5dd2d332 | 4045 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
4046 | static int |
4047 | myri10ge_notify_dca(struct notifier_block *nb, unsigned long event, void *p) | |
4048 | { | |
4049 | int err = driver_for_each_device(&myri10ge_driver.driver, | |
4050 | NULL, &event, | |
4051 | myri10ge_notify_dca_device); | |
4052 | ||
4053 | if (err) | |
4054 | return NOTIFY_BAD; | |
4055 | return NOTIFY_DONE; | |
4056 | } | |
4057 | ||
4058 | static struct notifier_block myri10ge_dca_notifier = { | |
4059 | .notifier_call = myri10ge_notify_dca, | |
4060 | .next = NULL, | |
4061 | .priority = 0, | |
4062 | }; | |
4ee2ac51 | 4063 | #endif /* CONFIG_MYRI10GE_DCA */ |
981813d8 | 4064 | |
0da34b6d BG |
4065 | static __init int myri10ge_init_module(void) |
4066 | { | |
78ca90ea | 4067 | pr_info("Version %s\n", MYRI10GE_VERSION_STR); |
0dcffac1 | 4068 | |
236bb5e6 | 4069 | if (myri10ge_rss_hash > MXGEFW_RSS_HASH_TYPE_MAX) { |
78ca90ea JP |
4070 | pr_err("Illegal rssh hash type %d, defaulting to source port\n", |
4071 | myri10ge_rss_hash); | |
0dcffac1 BG |
4072 | myri10ge_rss_hash = MXGEFW_RSS_HASH_TYPE_SRC_PORT; |
4073 | } | |
5dd2d332 | 4074 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
4075 | dca_register_notify(&myri10ge_dca_notifier); |
4076 | #endif | |
236bb5e6 BG |
4077 | if (myri10ge_max_slices > MYRI10GE_MAX_SLICES) |
4078 | myri10ge_max_slices = MYRI10GE_MAX_SLICES; | |
0dcffac1 | 4079 | |
0da34b6d BG |
4080 | return pci_register_driver(&myri10ge_driver); |
4081 | } | |
4082 | ||
4083 | module_init(myri10ge_init_module); | |
4084 | ||
4085 | static __exit void myri10ge_cleanup_module(void) | |
4086 | { | |
5dd2d332 | 4087 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
4088 | dca_unregister_notify(&myri10ge_dca_notifier); |
4089 | #endif | |
0da34b6d BG |
4090 | pci_unregister_driver(&myri10ge_driver); |
4091 | } | |
4092 | ||
4093 | module_exit(myri10ge_cleanup_module); |