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0da34b6d BG |
1 | /************************************************************************* |
2 | * myri10ge.c: Myricom Myri-10G Ethernet driver. | |
3 | * | |
e3fd5534 | 4 | * Copyright (C) 2005 - 2009 Myricom, Inc. |
0da34b6d BG |
5 | * All rights reserved. |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * 1. Redistributions of source code must retain the above copyright | |
11 | * notice, this list of conditions and the following disclaimer. | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
15 | * 3. Neither the name of Myricom, Inc. nor the names of its contributors | |
16 | * may be used to endorse or promote products derived from this software | |
17 | * without specific prior written permission. | |
18 | * | |
4a2e612a BG |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
20 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
0da34b6d | 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
4a2e612a BG |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
23 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
29 | * POSSIBILITY OF SUCH DAMAGE. | |
0da34b6d BG |
30 | * |
31 | * | |
32 | * If the eeprom on your board is not recent enough, you will need to get a | |
33 | * newer firmware image at: | |
34 | * http://www.myri.com/scs/download-Myri10GE.html | |
35 | * | |
36 | * Contact Information: | |
37 | * <help@myri.com> | |
38 | * Myricom, Inc., 325N Santa Anita Avenue, Arcadia, CA 91006 | |
39 | *************************************************************************/ | |
40 | ||
41 | #include <linux/tcp.h> | |
42 | #include <linux/netdevice.h> | |
43 | #include <linux/skbuff.h> | |
44 | #include <linux/string.h> | |
45 | #include <linux/module.h> | |
46 | #include <linux/pci.h> | |
b10c0668 | 47 | #include <linux/dma-mapping.h> |
0da34b6d BG |
48 | #include <linux/etherdevice.h> |
49 | #include <linux/if_ether.h> | |
50 | #include <linux/if_vlan.h> | |
1e6e9342 | 51 | #include <linux/inet_lro.h> |
981813d8 | 52 | #include <linux/dca.h> |
0da34b6d BG |
53 | #include <linux/ip.h> |
54 | #include <linux/inet.h> | |
55 | #include <linux/in.h> | |
56 | #include <linux/ethtool.h> | |
57 | #include <linux/firmware.h> | |
58 | #include <linux/delay.h> | |
0da34b6d BG |
59 | #include <linux/timer.h> |
60 | #include <linux/vmalloc.h> | |
61 | #include <linux/crc32.h> | |
62 | #include <linux/moduleparam.h> | |
63 | #include <linux/io.h> | |
199126a2 | 64 | #include <linux/log2.h> |
0da34b6d | 65 | #include <net/checksum.h> |
1e6e9342 AG |
66 | #include <net/ip.h> |
67 | #include <net/tcp.h> | |
0da34b6d BG |
68 | #include <asm/byteorder.h> |
69 | #include <asm/io.h> | |
0da34b6d BG |
70 | #include <asm/processor.h> |
71 | #ifdef CONFIG_MTRR | |
72 | #include <asm/mtrr.h> | |
73 | #endif | |
74 | ||
75 | #include "myri10ge_mcp.h" | |
76 | #include "myri10ge_mcp_gen_header.h" | |
77 | ||
4b860abf | 78 | #define MYRI10GE_VERSION_STR "1.5.1-1.453" |
0da34b6d BG |
79 | |
80 | MODULE_DESCRIPTION("Myricom 10G driver (10GbE)"); | |
81 | MODULE_AUTHOR("Maintainer: help@myri.com"); | |
82 | MODULE_VERSION(MYRI10GE_VERSION_STR); | |
83 | MODULE_LICENSE("Dual BSD/GPL"); | |
84 | ||
85 | #define MYRI10GE_MAX_ETHER_MTU 9014 | |
86 | ||
87 | #define MYRI10GE_ETH_STOPPED 0 | |
88 | #define MYRI10GE_ETH_STOPPING 1 | |
89 | #define MYRI10GE_ETH_STARTING 2 | |
90 | #define MYRI10GE_ETH_RUNNING 3 | |
91 | #define MYRI10GE_ETH_OPEN_FAILED 4 | |
92 | ||
93 | #define MYRI10GE_EEPROM_STRINGS_SIZE 256 | |
94 | #define MYRI10GE_MAX_SEND_DESC_TSO ((65536 / 2048) * 2) | |
1e6e9342 AG |
95 | #define MYRI10GE_MAX_LRO_DESCRIPTORS 8 |
96 | #define MYRI10GE_LRO_MAX_PKTS 64 | |
0da34b6d | 97 | |
40f6cff5 | 98 | #define MYRI10GE_NO_CONFIRM_DATA htonl(0xffffffff) |
0da34b6d BG |
99 | #define MYRI10GE_NO_RESPONSE_RESULT 0xffffffff |
100 | ||
dd50f336 BG |
101 | #define MYRI10GE_ALLOC_ORDER 0 |
102 | #define MYRI10GE_ALLOC_SIZE ((1 << MYRI10GE_ALLOC_ORDER) * PAGE_SIZE) | |
103 | #define MYRI10GE_MAX_FRAGS_PER_FRAME (MYRI10GE_MAX_ETHER_MTU/MYRI10GE_ALLOC_SIZE + 1) | |
104 | ||
236bb5e6 BG |
105 | #define MYRI10GE_MAX_SLICES 32 |
106 | ||
0da34b6d | 107 | struct myri10ge_rx_buffer_state { |
dd50f336 BG |
108 | struct page *page; |
109 | int page_offset; | |
0da34b6d BG |
110 | DECLARE_PCI_UNMAP_ADDR(bus) |
111 | DECLARE_PCI_UNMAP_LEN(len) | |
112 | }; | |
113 | ||
114 | struct myri10ge_tx_buffer_state { | |
115 | struct sk_buff *skb; | |
116 | int last; | |
117 | DECLARE_PCI_UNMAP_ADDR(bus) | |
118 | DECLARE_PCI_UNMAP_LEN(len) | |
119 | }; | |
120 | ||
121 | struct myri10ge_cmd { | |
122 | u32 data0; | |
123 | u32 data1; | |
124 | u32 data2; | |
125 | }; | |
126 | ||
127 | struct myri10ge_rx_buf { | |
128 | struct mcp_kreq_ether_recv __iomem *lanai; /* lanai ptr for recv ring */ | |
0da34b6d BG |
129 | struct mcp_kreq_ether_recv *shadow; /* host shadow of recv ring */ |
130 | struct myri10ge_rx_buffer_state *info; | |
dd50f336 BG |
131 | struct page *page; |
132 | dma_addr_t bus; | |
133 | int page_offset; | |
0da34b6d | 134 | int cnt; |
dd50f336 | 135 | int fill_cnt; |
0da34b6d BG |
136 | int alloc_fail; |
137 | int mask; /* number of rx slots -1 */ | |
dd50f336 | 138 | int watchdog_needed; |
0da34b6d BG |
139 | }; |
140 | ||
141 | struct myri10ge_tx_buf { | |
142 | struct mcp_kreq_ether_send __iomem *lanai; /* lanai ptr for sendq */ | |
236bb5e6 BG |
143 | __be32 __iomem *send_go; /* "go" doorbell ptr */ |
144 | __be32 __iomem *send_stop; /* "stop" doorbell ptr */ | |
0da34b6d BG |
145 | struct mcp_kreq_ether_send *req_list; /* host shadow of sendq */ |
146 | char *req_bytes; | |
147 | struct myri10ge_tx_buffer_state *info; | |
148 | int mask; /* number of transmit slots -1 */ | |
0da34b6d BG |
149 | int req ____cacheline_aligned; /* transmit slots submitted */ |
150 | int pkt_start; /* packets started */ | |
b53bef84 BG |
151 | int stop_queue; |
152 | int linearized; | |
0da34b6d BG |
153 | int done ____cacheline_aligned; /* transmit slots completed */ |
154 | int pkt_done; /* packets completed */ | |
b53bef84 | 155 | int wake_queue; |
236bb5e6 | 156 | int queue_active; |
0da34b6d BG |
157 | }; |
158 | ||
159 | struct myri10ge_rx_done { | |
160 | struct mcp_slot *entry; | |
161 | dma_addr_t bus; | |
162 | int cnt; | |
163 | int idx; | |
1e6e9342 AG |
164 | struct net_lro_mgr lro_mgr; |
165 | struct net_lro_desc lro_desc[MYRI10GE_MAX_LRO_DESCRIPTORS]; | |
0da34b6d BG |
166 | }; |
167 | ||
b53bef84 BG |
168 | struct myri10ge_slice_netstats { |
169 | unsigned long rx_packets; | |
170 | unsigned long tx_packets; | |
171 | unsigned long rx_bytes; | |
172 | unsigned long tx_bytes; | |
173 | unsigned long rx_dropped; | |
174 | unsigned long tx_dropped; | |
175 | }; | |
176 | ||
177 | struct myri10ge_slice_state { | |
0da34b6d BG |
178 | struct myri10ge_tx_buf tx; /* transmit ring */ |
179 | struct myri10ge_rx_buf rx_small; | |
180 | struct myri10ge_rx_buf rx_big; | |
181 | struct myri10ge_rx_done rx_done; | |
b53bef84 BG |
182 | struct net_device *dev; |
183 | struct napi_struct napi; | |
184 | struct myri10ge_priv *mgp; | |
185 | struct myri10ge_slice_netstats stats; | |
186 | __be32 __iomem *irq_claim; | |
187 | struct mcp_irq_data *fw_stats; | |
188 | dma_addr_t fw_stats_bus; | |
189 | int watchdog_tx_done; | |
190 | int watchdog_tx_req; | |
d0234215 | 191 | int watchdog_rx_done; |
5dd2d332 | 192 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
193 | int cached_dca_tag; |
194 | int cpu; | |
195 | __be32 __iomem *dca_tag; | |
196 | #endif | |
0dcffac1 | 197 | char irq_desc[32]; |
b53bef84 BG |
198 | }; |
199 | ||
200 | struct myri10ge_priv { | |
0dcffac1 | 201 | struct myri10ge_slice_state *ss; |
b53bef84 | 202 | int tx_boundary; /* boundary transmits cannot cross */ |
0dcffac1 | 203 | int num_slices; |
b53bef84 BG |
204 | int running; /* running? */ |
205 | int csum_flag; /* rx_csums? */ | |
0da34b6d | 206 | int small_bytes; |
dd50f336 | 207 | int big_bytes; |
fa0a90d9 | 208 | int max_intr_slots; |
0da34b6d | 209 | struct net_device *dev; |
b53bef84 | 210 | spinlock_t stats_lock; |
0da34b6d BG |
211 | u8 __iomem *sram; |
212 | int sram_size; | |
213 | unsigned long board_span; | |
214 | unsigned long iomem_base; | |
40f6cff5 | 215 | __be32 __iomem *irq_deassert; |
0da34b6d BG |
216 | char *mac_addr_string; |
217 | struct mcp_cmd_response *cmd; | |
218 | dma_addr_t cmd_bus; | |
0da34b6d BG |
219 | struct pci_dev *pdev; |
220 | int msi_enabled; | |
0dcffac1 BG |
221 | int msix_enabled; |
222 | struct msix_entry *msix_vectors; | |
5dd2d332 | 223 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
224 | int dca_enabled; |
225 | #endif | |
66341fff | 226 | u32 link_state; |
0da34b6d BG |
227 | unsigned int rdma_tags_available; |
228 | int intr_coal_delay; | |
40f6cff5 | 229 | __be32 __iomem *intr_coal_delay_ptr; |
0da34b6d | 230 | int mtrr; |
276e26c3 | 231 | int wc_enabled; |
0da34b6d BG |
232 | int down_cnt; |
233 | wait_queue_head_t down_wq; | |
234 | struct work_struct watchdog_work; | |
235 | struct timer_list watchdog_timer; | |
0da34b6d | 236 | int watchdog_resets; |
b53bef84 | 237 | int watchdog_pause; |
0da34b6d BG |
238 | int pause; |
239 | char *fw_name; | |
240 | char eeprom_strings[MYRI10GE_EEPROM_STRINGS_SIZE]; | |
c0bf8801 | 241 | char *product_code_string; |
0da34b6d | 242 | char fw_version[128]; |
9dc6f0e7 BG |
243 | int fw_ver_major; |
244 | int fw_ver_minor; | |
245 | int fw_ver_tiny; | |
246 | int adopted_rx_filter_bug; | |
0da34b6d BG |
247 | u8 mac_addr[6]; /* eeprom mac address */ |
248 | unsigned long serial_number; | |
249 | int vendor_specific_offset; | |
85a7ea1b | 250 | int fw_multicast_support; |
4f93fde0 BG |
251 | unsigned long features; |
252 | u32 max_tso6; | |
0da34b6d BG |
253 | u32 read_dma; |
254 | u32 write_dma; | |
255 | u32 read_write_dma; | |
c58ac5ca BG |
256 | u32 link_changes; |
257 | u32 msg_enable; | |
2d90b0aa | 258 | unsigned int board_number; |
d0234215 | 259 | int rebooted; |
0da34b6d BG |
260 | }; |
261 | ||
262 | static char *myri10ge_fw_unaligned = "myri10ge_ethp_z8e.dat"; | |
263 | static char *myri10ge_fw_aligned = "myri10ge_eth_z8e.dat"; | |
0dcffac1 BG |
264 | static char *myri10ge_fw_rss_unaligned = "myri10ge_rss_ethp_z8e.dat"; |
265 | static char *myri10ge_fw_rss_aligned = "myri10ge_rss_eth_z8e.dat"; | |
b9721d5a BH |
266 | MODULE_FIRMWARE("myri10ge_ethp_z8e.dat"); |
267 | MODULE_FIRMWARE("myri10ge_eth_z8e.dat"); | |
268 | MODULE_FIRMWARE("myri10ge_rss_ethp_z8e.dat"); | |
269 | MODULE_FIRMWARE("myri10ge_rss_eth_z8e.dat"); | |
0da34b6d BG |
270 | |
271 | static char *myri10ge_fw_name = NULL; | |
272 | module_param(myri10ge_fw_name, charp, S_IRUGO | S_IWUSR); | |
d1ce3a0f | 273 | MODULE_PARM_DESC(myri10ge_fw_name, "Firmware image name"); |
0da34b6d | 274 | |
2d90b0aa BG |
275 | #define MYRI10GE_MAX_BOARDS 8 |
276 | static char *myri10ge_fw_names[MYRI10GE_MAX_BOARDS] = | |
7fe624f5 | 277 | {[0 ... (MYRI10GE_MAX_BOARDS - 1)] = NULL }; |
2d90b0aa BG |
278 | module_param_array_named(myri10ge_fw_names, myri10ge_fw_names, charp, NULL, |
279 | 0444); | |
280 | MODULE_PARM_DESC(myri10ge_fw_name, "Firmware image names per board"); | |
281 | ||
0da34b6d BG |
282 | static int myri10ge_ecrc_enable = 1; |
283 | module_param(myri10ge_ecrc_enable, int, S_IRUGO); | |
d1ce3a0f | 284 | MODULE_PARM_DESC(myri10ge_ecrc_enable, "Enable Extended CRC on PCI-E"); |
0da34b6d | 285 | |
0da34b6d BG |
286 | static int myri10ge_small_bytes = -1; /* -1 == auto */ |
287 | module_param(myri10ge_small_bytes, int, S_IRUGO | S_IWUSR); | |
d1ce3a0f | 288 | MODULE_PARM_DESC(myri10ge_small_bytes, "Threshold of small packets"); |
0da34b6d BG |
289 | |
290 | static int myri10ge_msi = 1; /* enable msi by default */ | |
3621cec5 | 291 | module_param(myri10ge_msi, int, S_IRUGO | S_IWUSR); |
d1ce3a0f | 292 | MODULE_PARM_DESC(myri10ge_msi, "Enable Message Signalled Interrupts"); |
0da34b6d | 293 | |
f761fae1 | 294 | static int myri10ge_intr_coal_delay = 75; |
0da34b6d | 295 | module_param(myri10ge_intr_coal_delay, int, S_IRUGO); |
d1ce3a0f | 296 | MODULE_PARM_DESC(myri10ge_intr_coal_delay, "Interrupt coalescing delay"); |
0da34b6d BG |
297 | |
298 | static int myri10ge_flow_control = 1; | |
299 | module_param(myri10ge_flow_control, int, S_IRUGO); | |
d1ce3a0f | 300 | MODULE_PARM_DESC(myri10ge_flow_control, "Pause parameter"); |
0da34b6d BG |
301 | |
302 | static int myri10ge_deassert_wait = 1; | |
303 | module_param(myri10ge_deassert_wait, int, S_IRUGO | S_IWUSR); | |
304 | MODULE_PARM_DESC(myri10ge_deassert_wait, | |
d1ce3a0f | 305 | "Wait when deasserting legacy interrupts"); |
0da34b6d BG |
306 | |
307 | static int myri10ge_force_firmware = 0; | |
308 | module_param(myri10ge_force_firmware, int, S_IRUGO); | |
309 | MODULE_PARM_DESC(myri10ge_force_firmware, | |
d1ce3a0f | 310 | "Force firmware to assume aligned completions"); |
0da34b6d | 311 | |
0da34b6d BG |
312 | static int myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN; |
313 | module_param(myri10ge_initial_mtu, int, S_IRUGO); | |
d1ce3a0f | 314 | MODULE_PARM_DESC(myri10ge_initial_mtu, "Initial MTU"); |
0da34b6d BG |
315 | |
316 | static int myri10ge_napi_weight = 64; | |
317 | module_param(myri10ge_napi_weight, int, S_IRUGO); | |
d1ce3a0f | 318 | MODULE_PARM_DESC(myri10ge_napi_weight, "Set NAPI weight"); |
0da34b6d BG |
319 | |
320 | static int myri10ge_watchdog_timeout = 1; | |
321 | module_param(myri10ge_watchdog_timeout, int, S_IRUGO); | |
d1ce3a0f | 322 | MODULE_PARM_DESC(myri10ge_watchdog_timeout, "Set watchdog timeout"); |
0da34b6d BG |
323 | |
324 | static int myri10ge_max_irq_loops = 1048576; | |
325 | module_param(myri10ge_max_irq_loops, int, S_IRUGO); | |
326 | MODULE_PARM_DESC(myri10ge_max_irq_loops, | |
d1ce3a0f | 327 | "Set stuck legacy IRQ detection threshold"); |
0da34b6d | 328 | |
c58ac5ca BG |
329 | #define MYRI10GE_MSG_DEFAULT NETIF_MSG_LINK |
330 | ||
331 | static int myri10ge_debug = -1; /* defaults above */ | |
332 | module_param(myri10ge_debug, int, 0); | |
333 | MODULE_PARM_DESC(myri10ge_debug, "Debug level (0=none,...,16=all)"); | |
334 | ||
1e6e9342 AG |
335 | static int myri10ge_lro_max_pkts = MYRI10GE_LRO_MAX_PKTS; |
336 | module_param(myri10ge_lro_max_pkts, int, S_IRUGO); | |
d1ce3a0f BG |
337 | MODULE_PARM_DESC(myri10ge_lro_max_pkts, |
338 | "Number of LRO packets to be aggregated"); | |
1e6e9342 | 339 | |
dd50f336 BG |
340 | static int myri10ge_fill_thresh = 256; |
341 | module_param(myri10ge_fill_thresh, int, S_IRUGO | S_IWUSR); | |
d1ce3a0f | 342 | MODULE_PARM_DESC(myri10ge_fill_thresh, "Number of empty rx slots allowed"); |
dd50f336 | 343 | |
f181137f BG |
344 | static int myri10ge_reset_recover = 1; |
345 | ||
0dcffac1 BG |
346 | static int myri10ge_max_slices = 1; |
347 | module_param(myri10ge_max_slices, int, S_IRUGO); | |
348 | MODULE_PARM_DESC(myri10ge_max_slices, "Max tx/rx queues"); | |
349 | ||
4b860abf | 350 | static int myri10ge_rss_hash = MXGEFW_RSS_HASH_TYPE_SRC_DST_PORT; |
0dcffac1 BG |
351 | module_param(myri10ge_rss_hash, int, S_IRUGO); |
352 | MODULE_PARM_DESC(myri10ge_rss_hash, "Type of RSS hashing to do"); | |
353 | ||
981813d8 BG |
354 | static int myri10ge_dca = 1; |
355 | module_param(myri10ge_dca, int, S_IRUGO); | |
356 | MODULE_PARM_DESC(myri10ge_dca, "Enable DCA if possible"); | |
357 | ||
0da34b6d BG |
358 | #define MYRI10GE_FW_OFFSET 1024*1024 |
359 | #define MYRI10GE_HIGHPART_TO_U32(X) \ | |
360 | (sizeof (X) == 8) ? ((u32)((u64)(X) >> 32)) : (0) | |
361 | #define MYRI10GE_LOWPART_TO_U32(X) ((u32)(X)) | |
362 | ||
363 | #define myri10ge_pio_copy(to,from,size) __iowrite64_copy(to,from,size/8) | |
364 | ||
2f76216f | 365 | static void myri10ge_set_multicast_list(struct net_device *dev); |
61357325 SH |
366 | static netdev_tx_t myri10ge_sw_tso(struct sk_buff *skb, |
367 | struct net_device *dev); | |
2f76216f | 368 | |
6250223e | 369 | static inline void put_be32(__be32 val, __be32 __iomem * p) |
40f6cff5 | 370 | { |
6250223e | 371 | __raw_writel((__force __u32) val, (__force void __iomem *)p); |
40f6cff5 AV |
372 | } |
373 | ||
59081825 BG |
374 | static struct net_device_stats *myri10ge_get_stats(struct net_device *dev); |
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)); | |
556 | ||
9dc6f0e7 BG |
557 | sscanf(mgp->fw_version, "%d.%d.%d", &mgp->fw_ver_major, |
558 | &mgp->fw_ver_minor, &mgp->fw_ver_tiny); | |
0da34b6d | 559 | |
8e95a202 JP |
560 | if (!(mgp->fw_ver_major == MXGEFW_VERSION_MAJOR && |
561 | mgp->fw_ver_minor == MXGEFW_VERSION_MINOR)) { | |
0da34b6d BG |
562 | dev_err(dev, "Found firmware version %s\n", mgp->fw_version); |
563 | dev_err(dev, "Driver needs %d.%d\n", MXGEFW_VERSION_MAJOR, | |
564 | MXGEFW_VERSION_MINOR); | |
565 | return -EINVAL; | |
566 | } | |
567 | return 0; | |
568 | } | |
569 | ||
570 | static int myri10ge_load_hotplug_firmware(struct myri10ge_priv *mgp, u32 * size) | |
571 | { | |
572 | unsigned crc, reread_crc; | |
573 | const struct firmware *fw; | |
574 | struct device *dev = &mgp->pdev->dev; | |
b0d31d6b | 575 | unsigned char *fw_readback; |
0da34b6d BG |
576 | struct mcp_gen_header *hdr; |
577 | size_t hdr_offset; | |
578 | int status; | |
e454358a | 579 | unsigned i; |
0da34b6d BG |
580 | |
581 | if ((status = request_firmware(&fw, mgp->fw_name, dev)) < 0) { | |
582 | dev_err(dev, "Unable to load %s firmware image via hotplug\n", | |
583 | mgp->fw_name); | |
584 | status = -EINVAL; | |
585 | goto abort_with_nothing; | |
586 | } | |
587 | ||
588 | /* check size */ | |
589 | ||
590 | if (fw->size >= mgp->sram_size - MYRI10GE_FW_OFFSET || | |
591 | fw->size < MCP_HEADER_PTR_OFFSET + 4) { | |
592 | dev_err(dev, "Firmware size invalid:%d\n", (int)fw->size); | |
593 | status = -EINVAL; | |
594 | goto abort_with_fw; | |
595 | } | |
596 | ||
597 | /* check id */ | |
40f6cff5 | 598 | hdr_offset = ntohl(*(__be32 *) (fw->data + MCP_HEADER_PTR_OFFSET)); |
0da34b6d BG |
599 | if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > fw->size) { |
600 | dev_err(dev, "Bad firmware file\n"); | |
601 | status = -EINVAL; | |
602 | goto abort_with_fw; | |
603 | } | |
604 | hdr = (void *)(fw->data + hdr_offset); | |
605 | ||
606 | status = myri10ge_validate_firmware(mgp, hdr); | |
607 | if (status != 0) | |
608 | goto abort_with_fw; | |
609 | ||
610 | crc = crc32(~0, fw->data, fw->size); | |
e454358a BG |
611 | for (i = 0; i < fw->size; i += 256) { |
612 | myri10ge_pio_copy(mgp->sram + MYRI10GE_FW_OFFSET + i, | |
613 | fw->data + i, | |
614 | min(256U, (unsigned)(fw->size - i))); | |
615 | mb(); | |
616 | readb(mgp->sram); | |
b10c0668 | 617 | } |
b0d31d6b DW |
618 | fw_readback = vmalloc(fw->size); |
619 | if (!fw_readback) { | |
620 | status = -ENOMEM; | |
621 | goto abort_with_fw; | |
622 | } | |
0da34b6d | 623 | /* corruption checking is good for parity recovery and buggy chipset */ |
b0d31d6b DW |
624 | memcpy_fromio(fw_readback, mgp->sram + MYRI10GE_FW_OFFSET, fw->size); |
625 | reread_crc = crc32(~0, fw_readback, fw->size); | |
626 | vfree(fw_readback); | |
0da34b6d BG |
627 | if (crc != reread_crc) { |
628 | dev_err(dev, "CRC failed(fw-len=%u), got 0x%x (expect 0x%x)\n", | |
629 | (unsigned)fw->size, reread_crc, crc); | |
630 | status = -EIO; | |
631 | goto abort_with_fw; | |
632 | } | |
633 | *size = (u32) fw->size; | |
634 | ||
635 | abort_with_fw: | |
636 | release_firmware(fw); | |
637 | ||
638 | abort_with_nothing: | |
639 | return status; | |
640 | } | |
641 | ||
642 | static int myri10ge_adopt_running_firmware(struct myri10ge_priv *mgp) | |
643 | { | |
644 | struct mcp_gen_header *hdr; | |
645 | struct device *dev = &mgp->pdev->dev; | |
646 | const size_t bytes = sizeof(struct mcp_gen_header); | |
647 | size_t hdr_offset; | |
648 | int status; | |
649 | ||
650 | /* find running firmware header */ | |
66341fff | 651 | hdr_offset = swab32(readl(mgp->sram + MCP_HEADER_PTR_OFFSET)); |
0da34b6d BG |
652 | |
653 | if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > mgp->sram_size) { | |
654 | dev_err(dev, "Running firmware has bad header offset (%d)\n", | |
655 | (int)hdr_offset); | |
656 | return -EIO; | |
657 | } | |
658 | ||
659 | /* copy header of running firmware from SRAM to host memory to | |
660 | * validate firmware */ | |
661 | hdr = kmalloc(bytes, GFP_KERNEL); | |
662 | if (hdr == NULL) { | |
663 | dev_err(dev, "could not malloc firmware hdr\n"); | |
664 | return -ENOMEM; | |
665 | } | |
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 | ||
747 | mgp->fw_name = "adopted"; | |
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) { | |
822 | printk(KERN_ERR | |
823 | "myri10ge: %s: Failed to set flow control mode\n", | |
824 | mgp->dev->name); | |
825 | return status; | |
826 | } | |
827 | mgp->pause = pause; | |
828 | return 0; | |
829 | } | |
830 | ||
831 | static void | |
832 | myri10ge_change_promisc(struct myri10ge_priv *mgp, int promisc, int atomic) | |
833 | { | |
834 | struct myri10ge_cmd cmd; | |
835 | int status, ctl; | |
836 | ||
837 | ctl = promisc ? MXGEFW_ENABLE_PROMISC : MXGEFW_DISABLE_PROMISC; | |
838 | status = myri10ge_send_cmd(mgp, ctl, &cmd, atomic); | |
839 | if (status) | |
840 | printk(KERN_ERR "myri10ge: %s: Failed to set promisc mode\n", | |
841 | mgp->dev->name); | |
842 | } | |
843 | ||
0d6ac257 | 844 | static int myri10ge_dma_test(struct myri10ge_priv *mgp, int test_type) |
0da34b6d BG |
845 | { |
846 | struct myri10ge_cmd cmd; | |
847 | int status; | |
0da34b6d | 848 | u32 len; |
34fdccea BG |
849 | struct page *dmatest_page; |
850 | dma_addr_t dmatest_bus; | |
0d6ac257 BG |
851 | char *test = " "; |
852 | ||
853 | dmatest_page = alloc_page(GFP_KERNEL); | |
854 | if (!dmatest_page) | |
855 | return -ENOMEM; | |
856 | dmatest_bus = pci_map_page(mgp->pdev, dmatest_page, 0, PAGE_SIZE, | |
857 | DMA_BIDIRECTIONAL); | |
858 | ||
859 | /* Run a small DMA test. | |
860 | * The magic multipliers to the length tell the firmware | |
861 | * to do DMA read, write, or read+write tests. The | |
862 | * results are returned in cmd.data0. The upper 16 | |
863 | * bits or the return is the number of transfers completed. | |
864 | * The lower 16 bits is the time in 0.5us ticks that the | |
865 | * transfers took to complete. | |
866 | */ | |
867 | ||
b53bef84 | 868 | len = mgp->tx_boundary; |
0d6ac257 BG |
869 | |
870 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus); | |
871 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus); | |
872 | cmd.data2 = len * 0x10000; | |
873 | status = myri10ge_send_cmd(mgp, test_type, &cmd, 0); | |
874 | if (status != 0) { | |
875 | test = "read"; | |
876 | goto abort; | |
877 | } | |
878 | mgp->read_dma = ((cmd.data0 >> 16) * len * 2) / (cmd.data0 & 0xffff); | |
879 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus); | |
880 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus); | |
881 | cmd.data2 = len * 0x1; | |
882 | status = myri10ge_send_cmd(mgp, test_type, &cmd, 0); | |
883 | if (status != 0) { | |
884 | test = "write"; | |
885 | goto abort; | |
886 | } | |
887 | mgp->write_dma = ((cmd.data0 >> 16) * len * 2) / (cmd.data0 & 0xffff); | |
888 | ||
889 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus); | |
890 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus); | |
891 | cmd.data2 = len * 0x10001; | |
892 | status = myri10ge_send_cmd(mgp, test_type, &cmd, 0); | |
893 | if (status != 0) { | |
894 | test = "read/write"; | |
895 | goto abort; | |
896 | } | |
897 | mgp->read_write_dma = ((cmd.data0 >> 16) * len * 2 * 2) / | |
898 | (cmd.data0 & 0xffff); | |
899 | ||
900 | abort: | |
901 | pci_unmap_page(mgp->pdev, dmatest_bus, PAGE_SIZE, DMA_BIDIRECTIONAL); | |
902 | put_page(dmatest_page); | |
903 | ||
904 | if (status != 0 && test_type != MXGEFW_CMD_UNALIGNED_TEST) | |
905 | dev_warn(&mgp->pdev->dev, "DMA %s benchmark failed: %d\n", | |
906 | test, status); | |
907 | ||
908 | return status; | |
909 | } | |
910 | ||
911 | static int myri10ge_reset(struct myri10ge_priv *mgp) | |
912 | { | |
913 | struct myri10ge_cmd cmd; | |
0dcffac1 BG |
914 | struct myri10ge_slice_state *ss; |
915 | int i, status; | |
0d6ac257 | 916 | size_t bytes; |
5dd2d332 | 917 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
918 | unsigned long dca_tag_off; |
919 | #endif | |
0da34b6d BG |
920 | |
921 | /* try to send a reset command to the card to see if it | |
922 | * is alive */ | |
923 | memset(&cmd, 0, sizeof(cmd)); | |
924 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_RESET, &cmd, 0); | |
925 | if (status != 0) { | |
926 | dev_err(&mgp->pdev->dev, "failed reset\n"); | |
927 | return -ENXIO; | |
928 | } | |
0d6ac257 BG |
929 | |
930 | (void)myri10ge_dma_test(mgp, MXGEFW_DMA_TEST); | |
0dcffac1 BG |
931 | /* |
932 | * Use non-ndis mcp_slot (eg, 4 bytes total, | |
933 | * no toeplitz hash value returned. Older firmware will | |
934 | * not understand this command, but will use the correct | |
935 | * sized mcp_slot, so we ignore error returns | |
936 | */ | |
937 | cmd.data0 = MXGEFW_RSS_MCP_SLOT_TYPE_MIN; | |
938 | (void)myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_RSS_MCP_SLOT_TYPE, &cmd, 0); | |
0da34b6d BG |
939 | |
940 | /* Now exchange information about interrupts */ | |
941 | ||
0dcffac1 | 942 | bytes = mgp->max_intr_slots * sizeof(*mgp->ss[0].rx_done.entry); |
0da34b6d BG |
943 | cmd.data0 = (u32) bytes; |
944 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_SIZE, &cmd, 0); | |
0dcffac1 BG |
945 | |
946 | /* | |
947 | * Even though we already know how many slices are supported | |
948 | * via myri10ge_probe_slices() MXGEFW_CMD_GET_MAX_RSS_QUEUES | |
949 | * has magic side effects, and must be called after a reset. | |
950 | * It must be called prior to calling any RSS related cmds, | |
951 | * including assigning an interrupt queue for anything but | |
952 | * slice 0. It must also be called *after* | |
953 | * MXGEFW_CMD_SET_INTRQ_SIZE, since the intrq size is used by | |
954 | * the firmware to compute offsets. | |
955 | */ | |
956 | ||
957 | if (mgp->num_slices > 1) { | |
958 | ||
959 | /* ask the maximum number of slices it supports */ | |
960 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_RSS_QUEUES, | |
961 | &cmd, 0); | |
962 | if (status != 0) { | |
963 | dev_err(&mgp->pdev->dev, | |
964 | "failed to get number of slices\n"); | |
965 | } | |
966 | ||
967 | /* | |
968 | * MXGEFW_CMD_ENABLE_RSS_QUEUES must be called prior | |
969 | * to setting up the interrupt queue DMA | |
970 | */ | |
971 | ||
972 | cmd.data0 = mgp->num_slices; | |
236bb5e6 BG |
973 | cmd.data1 = MXGEFW_SLICE_INTR_MODE_ONE_PER_SLICE; |
974 | if (mgp->dev->real_num_tx_queues > 1) | |
975 | cmd.data1 |= MXGEFW_SLICE_ENABLE_MULTIPLE_TX_QUEUES; | |
0dcffac1 BG |
976 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ENABLE_RSS_QUEUES, |
977 | &cmd, 0); | |
236bb5e6 BG |
978 | |
979 | /* Firmware older than 1.4.32 only supports multiple | |
980 | * RX queues, so if we get an error, first retry using a | |
981 | * single TX queue before giving up */ | |
982 | if (status != 0 && mgp->dev->real_num_tx_queues > 1) { | |
983 | mgp->dev->real_num_tx_queues = 1; | |
984 | cmd.data0 = mgp->num_slices; | |
985 | cmd.data1 = MXGEFW_SLICE_INTR_MODE_ONE_PER_SLICE; | |
986 | status = myri10ge_send_cmd(mgp, | |
987 | MXGEFW_CMD_ENABLE_RSS_QUEUES, | |
988 | &cmd, 0); | |
989 | } | |
990 | ||
0dcffac1 BG |
991 | if (status != 0) { |
992 | dev_err(&mgp->pdev->dev, | |
993 | "failed to set number of slices\n"); | |
994 | ||
995 | return status; | |
996 | } | |
997 | } | |
998 | for (i = 0; i < mgp->num_slices; i++) { | |
999 | ss = &mgp->ss[i]; | |
1000 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(ss->rx_done.bus); | |
1001 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(ss->rx_done.bus); | |
1002 | cmd.data2 = i; | |
1003 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_DMA, | |
1004 | &cmd, 0); | |
1005 | }; | |
0da34b6d BG |
1006 | |
1007 | status |= | |
1008 | myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_ACK_OFFSET, &cmd, 0); | |
0dcffac1 BG |
1009 | for (i = 0; i < mgp->num_slices; i++) { |
1010 | ss = &mgp->ss[i]; | |
1011 | ss->irq_claim = | |
1012 | (__iomem __be32 *) (mgp->sram + cmd.data0 + 8 * i); | |
1013 | } | |
df30a740 BG |
1014 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_DEASSERT_OFFSET, |
1015 | &cmd, 0); | |
1016 | mgp->irq_deassert = (__iomem __be32 *) (mgp->sram + cmd.data0); | |
0da34b6d | 1017 | |
0da34b6d BG |
1018 | status |= myri10ge_send_cmd |
1019 | (mgp, MXGEFW_CMD_GET_INTR_COAL_DELAY_OFFSET, &cmd, 0); | |
40f6cff5 | 1020 | mgp->intr_coal_delay_ptr = (__iomem __be32 *) (mgp->sram + cmd.data0); |
0da34b6d BG |
1021 | if (status != 0) { |
1022 | dev_err(&mgp->pdev->dev, "failed set interrupt parameters\n"); | |
1023 | return status; | |
1024 | } | |
40f6cff5 | 1025 | put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr); |
0da34b6d | 1026 | |
5dd2d332 | 1027 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
1028 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_DCA_OFFSET, &cmd, 0); |
1029 | dca_tag_off = cmd.data0; | |
1030 | for (i = 0; i < mgp->num_slices; i++) { | |
1031 | ss = &mgp->ss[i]; | |
1032 | if (status == 0) { | |
1033 | ss->dca_tag = (__iomem __be32 *) | |
1034 | (mgp->sram + dca_tag_off + 4 * i); | |
1035 | } else { | |
1036 | ss->dca_tag = NULL; | |
1037 | } | |
1038 | } | |
4ee2ac51 | 1039 | #endif /* CONFIG_MYRI10GE_DCA */ |
981813d8 | 1040 | |
0da34b6d | 1041 | /* reset mcp/driver shared state back to 0 */ |
0dcffac1 | 1042 | |
c58ac5ca | 1043 | mgp->link_changes = 0; |
0dcffac1 BG |
1044 | for (i = 0; i < mgp->num_slices; i++) { |
1045 | ss = &mgp->ss[i]; | |
1046 | ||
1047 | memset(ss->rx_done.entry, 0, bytes); | |
1048 | ss->tx.req = 0; | |
1049 | ss->tx.done = 0; | |
1050 | ss->tx.pkt_start = 0; | |
1051 | ss->tx.pkt_done = 0; | |
1052 | ss->rx_big.cnt = 0; | |
1053 | ss->rx_small.cnt = 0; | |
1054 | ss->rx_done.idx = 0; | |
1055 | ss->rx_done.cnt = 0; | |
1056 | ss->tx.wake_queue = 0; | |
1057 | ss->tx.stop_queue = 0; | |
1058 | } | |
1059 | ||
0da34b6d | 1060 | status = myri10ge_update_mac_address(mgp, mgp->dev->dev_addr); |
0da34b6d | 1061 | myri10ge_change_pause(mgp, mgp->pause); |
2f76216f | 1062 | myri10ge_set_multicast_list(mgp->dev); |
0da34b6d BG |
1063 | return status; |
1064 | } | |
1065 | ||
5dd2d332 | 1066 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
1067 | static void |
1068 | myri10ge_write_dca(struct myri10ge_slice_state *ss, int cpu, int tag) | |
1069 | { | |
1070 | ss->cpu = cpu; | |
1071 | ss->cached_dca_tag = tag; | |
1072 | put_be32(htonl(tag), ss->dca_tag); | |
1073 | } | |
1074 | ||
1075 | static inline void myri10ge_update_dca(struct myri10ge_slice_state *ss) | |
1076 | { | |
1077 | int cpu = get_cpu(); | |
1078 | int tag; | |
1079 | ||
1080 | if (cpu != ss->cpu) { | |
1081 | tag = dca_get_tag(cpu); | |
1082 | if (ss->cached_dca_tag != tag) | |
1083 | myri10ge_write_dca(ss, cpu, tag); | |
1084 | } | |
1085 | put_cpu(); | |
1086 | } | |
1087 | ||
1088 | static void myri10ge_setup_dca(struct myri10ge_priv *mgp) | |
1089 | { | |
1090 | int err, i; | |
1091 | struct pci_dev *pdev = mgp->pdev; | |
1092 | ||
1093 | if (mgp->ss[0].dca_tag == NULL || mgp->dca_enabled) | |
1094 | return; | |
1095 | if (!myri10ge_dca) { | |
1096 | dev_err(&pdev->dev, "dca disabled by administrator\n"); | |
1097 | return; | |
1098 | } | |
1099 | err = dca_add_requester(&pdev->dev); | |
1100 | if (err) { | |
330554cb BG |
1101 | if (err != -ENODEV) |
1102 | dev_err(&pdev->dev, | |
1103 | "dca_add_requester() failed, err=%d\n", err); | |
981813d8 BG |
1104 | return; |
1105 | } | |
1106 | mgp->dca_enabled = 1; | |
1107 | for (i = 0; i < mgp->num_slices; i++) | |
1108 | myri10ge_write_dca(&mgp->ss[i], -1, 0); | |
1109 | } | |
1110 | ||
1111 | static void myri10ge_teardown_dca(struct myri10ge_priv *mgp) | |
1112 | { | |
1113 | struct pci_dev *pdev = mgp->pdev; | |
1114 | int err; | |
1115 | ||
1116 | if (!mgp->dca_enabled) | |
1117 | return; | |
1118 | mgp->dca_enabled = 0; | |
1119 | err = dca_remove_requester(&pdev->dev); | |
1120 | } | |
1121 | ||
1122 | static int myri10ge_notify_dca_device(struct device *dev, void *data) | |
1123 | { | |
1124 | struct myri10ge_priv *mgp; | |
1125 | unsigned long event; | |
1126 | ||
1127 | mgp = dev_get_drvdata(dev); | |
1128 | event = *(unsigned long *)data; | |
1129 | ||
1130 | if (event == DCA_PROVIDER_ADD) | |
1131 | myri10ge_setup_dca(mgp); | |
1132 | else if (event == DCA_PROVIDER_REMOVE) | |
1133 | myri10ge_teardown_dca(mgp); | |
1134 | return 0; | |
1135 | } | |
4ee2ac51 | 1136 | #endif /* CONFIG_MYRI10GE_DCA */ |
981813d8 | 1137 | |
0da34b6d BG |
1138 | static inline void |
1139 | myri10ge_submit_8rx(struct mcp_kreq_ether_recv __iomem * dst, | |
1140 | struct mcp_kreq_ether_recv *src) | |
1141 | { | |
40f6cff5 | 1142 | __be32 low; |
0da34b6d BG |
1143 | |
1144 | low = src->addr_low; | |
284901a9 | 1145 | src->addr_low = htonl(DMA_BIT_MASK(32)); |
e67bda55 BG |
1146 | myri10ge_pio_copy(dst, src, 4 * sizeof(*src)); |
1147 | mb(); | |
1148 | myri10ge_pio_copy(dst + 4, src + 4, 4 * sizeof(*src)); | |
0da34b6d BG |
1149 | mb(); |
1150 | src->addr_low = low; | |
40f6cff5 | 1151 | put_be32(low, &dst->addr_low); |
0da34b6d BG |
1152 | mb(); |
1153 | } | |
1154 | ||
40f6cff5 | 1155 | static inline void myri10ge_vlan_ip_csum(struct sk_buff *skb, __wsum hw_csum) |
0da34b6d BG |
1156 | { |
1157 | struct vlan_hdr *vh = (struct vlan_hdr *)(skb->data); | |
1158 | ||
40f6cff5 | 1159 | if ((skb->protocol == htons(ETH_P_8021Q)) && |
0da34b6d BG |
1160 | (vh->h_vlan_encapsulated_proto == htons(ETH_P_IP) || |
1161 | vh->h_vlan_encapsulated_proto == htons(ETH_P_IPV6))) { | |
1162 | skb->csum = hw_csum; | |
84fa7933 | 1163 | skb->ip_summed = CHECKSUM_COMPLETE; |
0da34b6d BG |
1164 | } |
1165 | } | |
1166 | ||
dd50f336 BG |
1167 | static inline void |
1168 | myri10ge_rx_skb_build(struct sk_buff *skb, u8 * va, | |
1169 | struct skb_frag_struct *rx_frags, int len, int hlen) | |
1170 | { | |
1171 | struct skb_frag_struct *skb_frags; | |
1172 | ||
1173 | skb->len = skb->data_len = len; | |
1174 | skb->truesize = len + sizeof(struct sk_buff); | |
1175 | /* attach the page(s) */ | |
1176 | ||
1177 | skb_frags = skb_shinfo(skb)->frags; | |
1178 | while (len > 0) { | |
1179 | memcpy(skb_frags, rx_frags, sizeof(*skb_frags)); | |
1180 | len -= rx_frags->size; | |
1181 | skb_frags++; | |
1182 | rx_frags++; | |
1183 | skb_shinfo(skb)->nr_frags++; | |
1184 | } | |
1185 | ||
1186 | /* pskb_may_pull is not available in irq context, but | |
1187 | * skb_pull() (for ether_pad and eth_type_trans()) requires | |
1188 | * the beginning of the packet in skb_headlen(), move it | |
1189 | * manually */ | |
27d7ff46 | 1190 | skb_copy_to_linear_data(skb, va, hlen); |
dd50f336 BG |
1191 | skb_shinfo(skb)->frags[0].page_offset += hlen; |
1192 | skb_shinfo(skb)->frags[0].size -= hlen; | |
1193 | skb->data_len -= hlen; | |
1194 | skb->tail += hlen; | |
1195 | skb_pull(skb, MXGEFW_PAD); | |
1196 | } | |
1197 | ||
1198 | static void | |
1199 | myri10ge_alloc_rx_pages(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx, | |
1200 | int bytes, int watchdog) | |
1201 | { | |
1202 | struct page *page; | |
1203 | int idx; | |
1204 | ||
1205 | if (unlikely(rx->watchdog_needed && !watchdog)) | |
1206 | return; | |
1207 | ||
1208 | /* try to refill entire ring */ | |
1209 | while (rx->fill_cnt != (rx->cnt + rx->mask + 1)) { | |
1210 | idx = rx->fill_cnt & rx->mask; | |
ae8509b1 | 1211 | if (rx->page_offset + bytes <= MYRI10GE_ALLOC_SIZE) { |
dd50f336 BG |
1212 | /* we can use part of previous page */ |
1213 | get_page(rx->page); | |
1214 | } else { | |
1215 | /* we need a new page */ | |
1216 | page = | |
1217 | alloc_pages(GFP_ATOMIC | __GFP_COMP, | |
1218 | MYRI10GE_ALLOC_ORDER); | |
1219 | if (unlikely(page == NULL)) { | |
1220 | if (rx->fill_cnt - rx->cnt < 16) | |
1221 | rx->watchdog_needed = 1; | |
1222 | return; | |
1223 | } | |
1224 | rx->page = page; | |
1225 | rx->page_offset = 0; | |
1226 | rx->bus = pci_map_page(mgp->pdev, page, 0, | |
1227 | MYRI10GE_ALLOC_SIZE, | |
1228 | PCI_DMA_FROMDEVICE); | |
1229 | } | |
1230 | rx->info[idx].page = rx->page; | |
1231 | rx->info[idx].page_offset = rx->page_offset; | |
1232 | /* note that this is the address of the start of the | |
1233 | * page */ | |
1234 | pci_unmap_addr_set(&rx->info[idx], bus, rx->bus); | |
1235 | rx->shadow[idx].addr_low = | |
1236 | htonl(MYRI10GE_LOWPART_TO_U32(rx->bus) + rx->page_offset); | |
1237 | rx->shadow[idx].addr_high = | |
1238 | htonl(MYRI10GE_HIGHPART_TO_U32(rx->bus)); | |
1239 | ||
1240 | /* start next packet on a cacheline boundary */ | |
1241 | rx->page_offset += SKB_DATA_ALIGN(bytes); | |
ae8509b1 BG |
1242 | |
1243 | #if MYRI10GE_ALLOC_SIZE > 4096 | |
1244 | /* don't cross a 4KB boundary */ | |
1245 | if ((rx->page_offset >> 12) != | |
1246 | ((rx->page_offset + bytes - 1) >> 12)) | |
1247 | rx->page_offset = (rx->page_offset + 4096) & ~4095; | |
1248 | #endif | |
dd50f336 BG |
1249 | rx->fill_cnt++; |
1250 | ||
1251 | /* copy 8 descriptors to the firmware at a time */ | |
1252 | if ((idx & 7) == 7) { | |
e454e7e2 BG |
1253 | myri10ge_submit_8rx(&rx->lanai[idx - 7], |
1254 | &rx->shadow[idx - 7]); | |
dd50f336 BG |
1255 | } |
1256 | } | |
1257 | } | |
1258 | ||
1259 | static inline void | |
1260 | myri10ge_unmap_rx_page(struct pci_dev *pdev, | |
1261 | struct myri10ge_rx_buffer_state *info, int bytes) | |
1262 | { | |
1263 | /* unmap the recvd page if we're the only or last user of it */ | |
1264 | if (bytes >= MYRI10GE_ALLOC_SIZE / 2 || | |
1265 | (info->page_offset + 2 * bytes) > MYRI10GE_ALLOC_SIZE) { | |
1266 | pci_unmap_page(pdev, (pci_unmap_addr(info, bus) | |
1267 | & ~(MYRI10GE_ALLOC_SIZE - 1)), | |
1268 | MYRI10GE_ALLOC_SIZE, PCI_DMA_FROMDEVICE); | |
1269 | } | |
1270 | } | |
1271 | ||
1272 | #define MYRI10GE_HLEN 64 /* The number of bytes to copy from a | |
1273 | * page into an skb */ | |
1274 | ||
1275 | static inline int | |
b53bef84 | 1276 | myri10ge_rx_done(struct myri10ge_slice_state *ss, struct myri10ge_rx_buf *rx, |
52ea6fb3 | 1277 | int bytes, int len, __wsum csum) |
dd50f336 | 1278 | { |
b53bef84 | 1279 | struct myri10ge_priv *mgp = ss->mgp; |
dd50f336 BG |
1280 | struct sk_buff *skb; |
1281 | struct skb_frag_struct rx_frags[MYRI10GE_MAX_FRAGS_PER_FRAME]; | |
1282 | int i, idx, hlen, remainder; | |
1283 | struct pci_dev *pdev = mgp->pdev; | |
1284 | struct net_device *dev = mgp->dev; | |
1285 | u8 *va; | |
1286 | ||
1287 | len += MXGEFW_PAD; | |
1288 | idx = rx->cnt & rx->mask; | |
1289 | va = page_address(rx->info[idx].page) + rx->info[idx].page_offset; | |
1290 | prefetch(va); | |
1291 | /* Fill skb_frag_struct(s) with data from our receive */ | |
1292 | for (i = 0, remainder = len; remainder > 0; i++) { | |
1293 | myri10ge_unmap_rx_page(pdev, &rx->info[idx], bytes); | |
1294 | rx_frags[i].page = rx->info[idx].page; | |
1295 | rx_frags[i].page_offset = rx->info[idx].page_offset; | |
1296 | if (remainder < MYRI10GE_ALLOC_SIZE) | |
1297 | rx_frags[i].size = remainder; | |
1298 | else | |
1299 | rx_frags[i].size = MYRI10GE_ALLOC_SIZE; | |
1300 | rx->cnt++; | |
1301 | idx = rx->cnt & rx->mask; | |
1302 | remainder -= MYRI10GE_ALLOC_SIZE; | |
1303 | } | |
1304 | ||
3a0c7d2d | 1305 | if (dev->features & NETIF_F_LRO) { |
1e6e9342 AG |
1306 | rx_frags[0].page_offset += MXGEFW_PAD; |
1307 | rx_frags[0].size -= MXGEFW_PAD; | |
1308 | len -= MXGEFW_PAD; | |
b53bef84 | 1309 | lro_receive_frags(&ss->rx_done.lro_mgr, rx_frags, |
b53bef84 | 1310 | /* opaque, will come back in get_frag_header */ |
0dcffac1 | 1311 | len, len, |
b53bef84 | 1312 | (void *)(__force unsigned long)csum, csum); |
0dcffac1 | 1313 | |
1e6e9342 AG |
1314 | return 1; |
1315 | } | |
1316 | ||
dd50f336 BG |
1317 | hlen = MYRI10GE_HLEN > len ? len : MYRI10GE_HLEN; |
1318 | ||
e636b2ea BG |
1319 | /* allocate an skb to attach the page(s) to. This is done |
1320 | * after trying LRO, so as to avoid skb allocation overheads */ | |
dd50f336 BG |
1321 | |
1322 | skb = netdev_alloc_skb(dev, MYRI10GE_HLEN + 16); | |
1323 | if (unlikely(skb == NULL)) { | |
d6279c88 | 1324 | ss->stats.rx_dropped++; |
dd50f336 BG |
1325 | do { |
1326 | i--; | |
1327 | put_page(rx_frags[i].page); | |
1328 | } while (i != 0); | |
1329 | return 0; | |
1330 | } | |
1331 | ||
1332 | /* Attach the pages to the skb, and trim off any padding */ | |
1333 | myri10ge_rx_skb_build(skb, va, rx_frags, len, hlen); | |
1334 | if (skb_shinfo(skb)->frags[0].size <= 0) { | |
1335 | put_page(skb_shinfo(skb)->frags[0].page); | |
1336 | skb_shinfo(skb)->nr_frags = 0; | |
1337 | } | |
1338 | skb->protocol = eth_type_trans(skb, dev); | |
0c8dfc83 | 1339 | skb_record_rx_queue(skb, ss - &mgp->ss[0]); |
dd50f336 BG |
1340 | |
1341 | if (mgp->csum_flag) { | |
1342 | if ((skb->protocol == htons(ETH_P_IP)) || | |
1343 | (skb->protocol == htons(ETH_P_IPV6))) { | |
1344 | skb->csum = csum; | |
1345 | skb->ip_summed = CHECKSUM_COMPLETE; | |
1346 | } else | |
1347 | myri10ge_vlan_ip_csum(skb, csum); | |
1348 | } | |
1349 | netif_receive_skb(skb); | |
dd50f336 BG |
1350 | return 1; |
1351 | } | |
1352 | ||
b53bef84 BG |
1353 | static inline void |
1354 | myri10ge_tx_done(struct myri10ge_slice_state *ss, int mcp_index) | |
0da34b6d | 1355 | { |
b53bef84 BG |
1356 | struct pci_dev *pdev = ss->mgp->pdev; |
1357 | struct myri10ge_tx_buf *tx = &ss->tx; | |
236bb5e6 | 1358 | struct netdev_queue *dev_queue; |
0da34b6d BG |
1359 | struct sk_buff *skb; |
1360 | int idx, len; | |
0da34b6d BG |
1361 | |
1362 | while (tx->pkt_done != mcp_index) { | |
1363 | idx = tx->done & tx->mask; | |
1364 | skb = tx->info[idx].skb; | |
1365 | ||
1366 | /* Mark as free */ | |
1367 | tx->info[idx].skb = NULL; | |
1368 | if (tx->info[idx].last) { | |
1369 | tx->pkt_done++; | |
1370 | tx->info[idx].last = 0; | |
1371 | } | |
1372 | tx->done++; | |
1373 | len = pci_unmap_len(&tx->info[idx], len); | |
1374 | pci_unmap_len_set(&tx->info[idx], len, 0); | |
1375 | if (skb) { | |
b53bef84 BG |
1376 | ss->stats.tx_bytes += skb->len; |
1377 | ss->stats.tx_packets++; | |
0da34b6d BG |
1378 | dev_kfree_skb_irq(skb); |
1379 | if (len) | |
1380 | pci_unmap_single(pdev, | |
1381 | pci_unmap_addr(&tx->info[idx], | |
1382 | bus), len, | |
1383 | PCI_DMA_TODEVICE); | |
1384 | } else { | |
1385 | if (len) | |
1386 | pci_unmap_page(pdev, | |
1387 | pci_unmap_addr(&tx->info[idx], | |
1388 | bus), len, | |
1389 | PCI_DMA_TODEVICE); | |
1390 | } | |
0da34b6d | 1391 | } |
236bb5e6 BG |
1392 | |
1393 | dev_queue = netdev_get_tx_queue(ss->dev, ss - ss->mgp->ss); | |
1394 | /* | |
1395 | * Make a minimal effort to prevent the NIC from polling an | |
1396 | * idle tx queue. If we can't get the lock we leave the queue | |
1397 | * active. In this case, either a thread was about to start | |
1398 | * using the queue anyway, or we lost a race and the NIC will | |
1399 | * waste some of its resources polling an inactive queue for a | |
1400 | * while. | |
1401 | */ | |
1402 | ||
1403 | if ((ss->mgp->dev->real_num_tx_queues > 1) && | |
1404 | __netif_tx_trylock(dev_queue)) { | |
1405 | if (tx->req == tx->done) { | |
1406 | tx->queue_active = 0; | |
1407 | put_be32(htonl(1), tx->send_stop); | |
8c2f5fa5 | 1408 | mb(); |
6824a105 | 1409 | mmiowb(); |
236bb5e6 BG |
1410 | } |
1411 | __netif_tx_unlock(dev_queue); | |
1412 | } | |
1413 | ||
0da34b6d | 1414 | /* start the queue if we've stopped it */ |
8e95a202 JP |
1415 | if (netif_tx_queue_stopped(dev_queue) && |
1416 | tx->req - tx->done < (tx->mask >> 1)) { | |
b53bef84 | 1417 | tx->wake_queue++; |
236bb5e6 | 1418 | netif_tx_wake_queue(dev_queue); |
0da34b6d BG |
1419 | } |
1420 | } | |
1421 | ||
b53bef84 BG |
1422 | static inline int |
1423 | myri10ge_clean_rx_done(struct myri10ge_slice_state *ss, int budget) | |
0da34b6d | 1424 | { |
b53bef84 BG |
1425 | struct myri10ge_rx_done *rx_done = &ss->rx_done; |
1426 | struct myri10ge_priv *mgp = ss->mgp; | |
18af3e7c | 1427 | struct net_device *netdev = mgp->dev; |
0da34b6d BG |
1428 | unsigned long rx_bytes = 0; |
1429 | unsigned long rx_packets = 0; | |
1430 | unsigned long rx_ok; | |
1431 | ||
1432 | int idx = rx_done->idx; | |
1433 | int cnt = rx_done->cnt; | |
bea3348e | 1434 | int work_done = 0; |
0da34b6d | 1435 | u16 length; |
40f6cff5 | 1436 | __wsum checksum; |
0da34b6d | 1437 | |
c956a240 | 1438 | while (rx_done->entry[idx].length != 0 && work_done < budget) { |
0da34b6d BG |
1439 | length = ntohs(rx_done->entry[idx].length); |
1440 | rx_done->entry[idx].length = 0; | |
40f6cff5 | 1441 | checksum = csum_unfold(rx_done->entry[idx].checksum); |
0da34b6d | 1442 | if (length <= mgp->small_bytes) |
b53bef84 | 1443 | rx_ok = myri10ge_rx_done(ss, &ss->rx_small, |
52ea6fb3 BG |
1444 | mgp->small_bytes, |
1445 | length, checksum); | |
0da34b6d | 1446 | else |
b53bef84 | 1447 | rx_ok = myri10ge_rx_done(ss, &ss->rx_big, |
52ea6fb3 BG |
1448 | mgp->big_bytes, |
1449 | length, checksum); | |
0da34b6d BG |
1450 | rx_packets += rx_ok; |
1451 | rx_bytes += rx_ok * (unsigned long)length; | |
1452 | cnt++; | |
014377a1 | 1453 | idx = cnt & (mgp->max_intr_slots - 1); |
c956a240 | 1454 | work_done++; |
0da34b6d BG |
1455 | } |
1456 | rx_done->idx = idx; | |
1457 | rx_done->cnt = cnt; | |
b53bef84 BG |
1458 | ss->stats.rx_packets += rx_packets; |
1459 | ss->stats.rx_bytes += rx_bytes; | |
c7dab99b | 1460 | |
18af3e7c | 1461 | if (netdev->features & NETIF_F_LRO) |
1e6e9342 AG |
1462 | lro_flush_all(&rx_done->lro_mgr); |
1463 | ||
c7dab99b | 1464 | /* restock receive rings if needed */ |
b53bef84 BG |
1465 | if (ss->rx_small.fill_cnt - ss->rx_small.cnt < myri10ge_fill_thresh) |
1466 | myri10ge_alloc_rx_pages(mgp, &ss->rx_small, | |
c7dab99b | 1467 | mgp->small_bytes + MXGEFW_PAD, 0); |
b53bef84 BG |
1468 | if (ss->rx_big.fill_cnt - ss->rx_big.cnt < myri10ge_fill_thresh) |
1469 | myri10ge_alloc_rx_pages(mgp, &ss->rx_big, mgp->big_bytes, 0); | |
c7dab99b | 1470 | |
bea3348e | 1471 | return work_done; |
0da34b6d BG |
1472 | } |
1473 | ||
1474 | static inline void myri10ge_check_statblock(struct myri10ge_priv *mgp) | |
1475 | { | |
0dcffac1 | 1476 | struct mcp_irq_data *stats = mgp->ss[0].fw_stats; |
0da34b6d BG |
1477 | |
1478 | if (unlikely(stats->stats_updated)) { | |
798a95db BG |
1479 | unsigned link_up = ntohl(stats->link_up); |
1480 | if (mgp->link_state != link_up) { | |
1481 | mgp->link_state = link_up; | |
1482 | ||
1483 | if (mgp->link_state == MXGEFW_LINK_UP) { | |
c58ac5ca BG |
1484 | if (netif_msg_link(mgp)) |
1485 | printk(KERN_INFO | |
1486 | "myri10ge: %s: link up\n", | |
1487 | mgp->dev->name); | |
0da34b6d | 1488 | netif_carrier_on(mgp->dev); |
c58ac5ca | 1489 | mgp->link_changes++; |
0da34b6d | 1490 | } else { |
c58ac5ca BG |
1491 | if (netif_msg_link(mgp)) |
1492 | printk(KERN_INFO | |
798a95db BG |
1493 | "myri10ge: %s: link %s\n", |
1494 | mgp->dev->name, | |
1495 | (link_up == MXGEFW_LINK_MYRINET ? | |
1496 | "mismatch (Myrinet detected)" : | |
1497 | "down")); | |
0da34b6d | 1498 | netif_carrier_off(mgp->dev); |
c58ac5ca | 1499 | mgp->link_changes++; |
0da34b6d BG |
1500 | } |
1501 | } | |
1502 | if (mgp->rdma_tags_available != | |
b53bef84 | 1503 | ntohl(stats->rdma_tags_available)) { |
0da34b6d | 1504 | mgp->rdma_tags_available = |
b53bef84 | 1505 | ntohl(stats->rdma_tags_available); |
0da34b6d BG |
1506 | printk(KERN_WARNING "myri10ge: %s: RDMA timed out! " |
1507 | "%d tags left\n", mgp->dev->name, | |
1508 | mgp->rdma_tags_available); | |
1509 | } | |
1510 | mgp->down_cnt += stats->link_down; | |
1511 | if (stats->link_down) | |
1512 | wake_up(&mgp->down_wq); | |
1513 | } | |
1514 | } | |
1515 | ||
bea3348e | 1516 | static int myri10ge_poll(struct napi_struct *napi, int budget) |
0da34b6d | 1517 | { |
b53bef84 BG |
1518 | struct myri10ge_slice_state *ss = |
1519 | container_of(napi, struct myri10ge_slice_state, napi); | |
bea3348e | 1520 | int work_done; |
0da34b6d | 1521 | |
5dd2d332 | 1522 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
1523 | if (ss->mgp->dca_enabled) |
1524 | myri10ge_update_dca(ss); | |
1525 | #endif | |
1526 | ||
0da34b6d | 1527 | /* process as many rx events as NAPI will allow */ |
b53bef84 | 1528 | work_done = myri10ge_clean_rx_done(ss, budget); |
0da34b6d | 1529 | |
4ec24119 | 1530 | if (work_done < budget) { |
288379f0 | 1531 | napi_complete(napi); |
b53bef84 | 1532 | put_be32(htonl(3), ss->irq_claim); |
0da34b6d | 1533 | } |
bea3348e | 1534 | return work_done; |
0da34b6d BG |
1535 | } |
1536 | ||
7d12e780 | 1537 | static irqreturn_t myri10ge_intr(int irq, void *arg) |
0da34b6d | 1538 | { |
b53bef84 BG |
1539 | struct myri10ge_slice_state *ss = arg; |
1540 | struct myri10ge_priv *mgp = ss->mgp; | |
1541 | struct mcp_irq_data *stats = ss->fw_stats; | |
1542 | struct myri10ge_tx_buf *tx = &ss->tx; | |
0da34b6d BG |
1543 | u32 send_done_count; |
1544 | int i; | |
1545 | ||
236bb5e6 BG |
1546 | /* an interrupt on a non-zero receive-only slice is implicitly |
1547 | * valid since MSI-X irqs are not shared */ | |
1548 | if ((mgp->dev->real_num_tx_queues == 1) && (ss != mgp->ss)) { | |
288379f0 | 1549 | napi_schedule(&ss->napi); |
0dcffac1 BG |
1550 | return (IRQ_HANDLED); |
1551 | } | |
1552 | ||
0da34b6d BG |
1553 | /* make sure it is our IRQ, and that the DMA has finished */ |
1554 | if (unlikely(!stats->valid)) | |
1555 | return (IRQ_NONE); | |
1556 | ||
1557 | /* low bit indicates receives are present, so schedule | |
1558 | * napi poll handler */ | |
1559 | if (stats->valid & 1) | |
288379f0 | 1560 | napi_schedule(&ss->napi); |
0da34b6d | 1561 | |
0dcffac1 | 1562 | if (!mgp->msi_enabled && !mgp->msix_enabled) { |
40f6cff5 | 1563 | put_be32(0, mgp->irq_deassert); |
0da34b6d BG |
1564 | if (!myri10ge_deassert_wait) |
1565 | stats->valid = 0; | |
1566 | mb(); | |
1567 | } else | |
1568 | stats->valid = 0; | |
1569 | ||
1570 | /* Wait for IRQ line to go low, if using INTx */ | |
1571 | i = 0; | |
1572 | while (1) { | |
1573 | i++; | |
1574 | /* check for transmit completes and receives */ | |
1575 | send_done_count = ntohl(stats->send_done_count); | |
1576 | if (send_done_count != tx->pkt_done) | |
b53bef84 | 1577 | myri10ge_tx_done(ss, (int)send_done_count); |
0da34b6d BG |
1578 | if (unlikely(i > myri10ge_max_irq_loops)) { |
1579 | printk(KERN_WARNING "myri10ge: %s: irq stuck?\n", | |
1580 | mgp->dev->name); | |
1581 | stats->valid = 0; | |
1582 | schedule_work(&mgp->watchdog_work); | |
1583 | } | |
1584 | if (likely(stats->valid == 0)) | |
1585 | break; | |
1586 | cpu_relax(); | |
1587 | barrier(); | |
1588 | } | |
1589 | ||
236bb5e6 BG |
1590 | /* Only slice 0 updates stats */ |
1591 | if (ss == mgp->ss) | |
1592 | myri10ge_check_statblock(mgp); | |
0da34b6d | 1593 | |
b53bef84 | 1594 | put_be32(htonl(3), ss->irq_claim + 1); |
0da34b6d BG |
1595 | return (IRQ_HANDLED); |
1596 | } | |
1597 | ||
1598 | static int | |
1599 | myri10ge_get_settings(struct net_device *netdev, struct ethtool_cmd *cmd) | |
1600 | { | |
c0bf8801 BG |
1601 | struct myri10ge_priv *mgp = netdev_priv(netdev); |
1602 | char *ptr; | |
1603 | int i; | |
1604 | ||
0da34b6d BG |
1605 | cmd->autoneg = AUTONEG_DISABLE; |
1606 | cmd->speed = SPEED_10000; | |
1607 | cmd->duplex = DUPLEX_FULL; | |
c0bf8801 BG |
1608 | |
1609 | /* | |
1610 | * parse the product code to deterimine the interface type | |
1611 | * (CX4, XFP, Quad Ribbon Fiber) by looking at the character | |
1612 | * after the 3rd dash in the driver's cached copy of the | |
1613 | * EEPROM's product code string. | |
1614 | */ | |
1615 | ptr = mgp->product_code_string; | |
1616 | if (ptr == NULL) { | |
1617 | printk(KERN_ERR "myri10ge: %s: Missing product code\n", | |
99f5f87e | 1618 | netdev->name); |
c0bf8801 BG |
1619 | return 0; |
1620 | } | |
1621 | for (i = 0; i < 3; i++, ptr++) { | |
1622 | ptr = strchr(ptr, '-'); | |
1623 | if (ptr == NULL) { | |
1624 | printk(KERN_ERR "myri10ge: %s: Invalid product " | |
1625 | "code %s\n", netdev->name, | |
1626 | mgp->product_code_string); | |
1627 | return 0; | |
1628 | } | |
1629 | } | |
196f17eb BG |
1630 | if (*ptr == '2') |
1631 | ptr++; | |
1632 | if (*ptr == 'R' || *ptr == 'Q' || *ptr == 'S') { | |
1633 | /* We've found either an XFP, quad ribbon fiber, or SFP+ */ | |
c0bf8801 | 1634 | cmd->port = PORT_FIBRE; |
196f17eb BG |
1635 | cmd->supported |= SUPPORTED_FIBRE; |
1636 | cmd->advertising |= ADVERTISED_FIBRE; | |
1637 | } else { | |
1638 | cmd->port = PORT_OTHER; | |
c0bf8801 | 1639 | } |
196f17eb BG |
1640 | if (*ptr == 'R' || *ptr == 'S') |
1641 | cmd->transceiver = XCVR_EXTERNAL; | |
1642 | else | |
1643 | cmd->transceiver = XCVR_INTERNAL; | |
1644 | ||
0da34b6d BG |
1645 | return 0; |
1646 | } | |
1647 | ||
1648 | static void | |
1649 | myri10ge_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) | |
1650 | { | |
1651 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1652 | ||
1653 | strlcpy(info->driver, "myri10ge", sizeof(info->driver)); | |
1654 | strlcpy(info->version, MYRI10GE_VERSION_STR, sizeof(info->version)); | |
1655 | strlcpy(info->fw_version, mgp->fw_version, sizeof(info->fw_version)); | |
1656 | strlcpy(info->bus_info, pci_name(mgp->pdev), sizeof(info->bus_info)); | |
1657 | } | |
1658 | ||
1659 | static int | |
1660 | myri10ge_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal) | |
1661 | { | |
1662 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
99f5f87e | 1663 | |
0da34b6d BG |
1664 | coal->rx_coalesce_usecs = mgp->intr_coal_delay; |
1665 | return 0; | |
1666 | } | |
1667 | ||
1668 | static int | |
1669 | myri10ge_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal) | |
1670 | { | |
1671 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1672 | ||
1673 | mgp->intr_coal_delay = coal->rx_coalesce_usecs; | |
40f6cff5 | 1674 | put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr); |
0da34b6d BG |
1675 | return 0; |
1676 | } | |
1677 | ||
1678 | static void | |
1679 | myri10ge_get_pauseparam(struct net_device *netdev, | |
1680 | struct ethtool_pauseparam *pause) | |
1681 | { | |
1682 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1683 | ||
1684 | pause->autoneg = 0; | |
1685 | pause->rx_pause = mgp->pause; | |
1686 | pause->tx_pause = mgp->pause; | |
1687 | } | |
1688 | ||
1689 | static int | |
1690 | myri10ge_set_pauseparam(struct net_device *netdev, | |
1691 | struct ethtool_pauseparam *pause) | |
1692 | { | |
1693 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1694 | ||
1695 | if (pause->tx_pause != mgp->pause) | |
1696 | return myri10ge_change_pause(mgp, pause->tx_pause); | |
1697 | if (pause->rx_pause != mgp->pause) | |
1698 | return myri10ge_change_pause(mgp, pause->tx_pause); | |
1699 | if (pause->autoneg != 0) | |
1700 | return -EINVAL; | |
1701 | return 0; | |
1702 | } | |
1703 | ||
1704 | static void | |
1705 | myri10ge_get_ringparam(struct net_device *netdev, | |
1706 | struct ethtool_ringparam *ring) | |
1707 | { | |
1708 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1709 | ||
0dcffac1 BG |
1710 | ring->rx_mini_max_pending = mgp->ss[0].rx_small.mask + 1; |
1711 | ring->rx_max_pending = mgp->ss[0].rx_big.mask + 1; | |
0da34b6d | 1712 | ring->rx_jumbo_max_pending = 0; |
6498be3f | 1713 | ring->tx_max_pending = mgp->ss[0].tx.mask + 1; |
0da34b6d BG |
1714 | ring->rx_mini_pending = ring->rx_mini_max_pending; |
1715 | ring->rx_pending = ring->rx_max_pending; | |
1716 | ring->rx_jumbo_pending = ring->rx_jumbo_max_pending; | |
1717 | ring->tx_pending = ring->tx_max_pending; | |
1718 | } | |
1719 | ||
1720 | static u32 myri10ge_get_rx_csum(struct net_device *netdev) | |
1721 | { | |
1722 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
99f5f87e | 1723 | |
0da34b6d BG |
1724 | if (mgp->csum_flag) |
1725 | return 1; | |
1726 | else | |
1727 | return 0; | |
1728 | } | |
1729 | ||
1730 | static int myri10ge_set_rx_csum(struct net_device *netdev, u32 csum_enabled) | |
1731 | { | |
1732 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
3a0c7d2d | 1733 | int err = 0; |
99f5f87e | 1734 | |
0da34b6d BG |
1735 | if (csum_enabled) |
1736 | mgp->csum_flag = MXGEFW_FLAGS_CKSUM; | |
3a0c7d2d BG |
1737 | else { |
1738 | u32 flags = ethtool_op_get_flags(netdev); | |
1739 | err = ethtool_op_set_flags(netdev, (flags & ~ETH_FLAG_LRO)); | |
0da34b6d | 1740 | mgp->csum_flag = 0; |
3a0c7d2d BG |
1741 | |
1742 | } | |
1743 | return err; | |
0da34b6d BG |
1744 | } |
1745 | ||
4f93fde0 BG |
1746 | static int myri10ge_set_tso(struct net_device *netdev, u32 tso_enabled) |
1747 | { | |
1748 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1749 | unsigned long flags = mgp->features & (NETIF_F_TSO6 | NETIF_F_TSO); | |
1750 | ||
1751 | if (tso_enabled) | |
1752 | netdev->features |= flags; | |
1753 | else | |
1754 | netdev->features &= ~flags; | |
1755 | return 0; | |
1756 | } | |
1757 | ||
b53bef84 | 1758 | static const char myri10ge_gstrings_main_stats[][ETH_GSTRING_LEN] = { |
0da34b6d BG |
1759 | "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors", |
1760 | "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions", | |
1761 | "rx_length_errors", "rx_over_errors", "rx_crc_errors", | |
1762 | "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors", | |
1763 | "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors", | |
1764 | "tx_heartbeat_errors", "tx_window_errors", | |
1765 | /* device-specific stats */ | |
0dcffac1 | 1766 | "tx_boundary", "WC", "irq", "MSI", "MSIX", |
0da34b6d | 1767 | "read_dma_bw_MBs", "write_dma_bw_MBs", "read_write_dma_bw_MBs", |
b53bef84 | 1768 | "serial_number", "watchdog_resets", |
5dd2d332 | 1769 | #ifdef CONFIG_MYRI10GE_DCA |
9a6b3b54 | 1770 | "dca_capable_firmware", "dca_device_present", |
981813d8 | 1771 | #endif |
c58ac5ca | 1772 | "link_changes", "link_up", "dropped_link_overflow", |
cee505db BG |
1773 | "dropped_link_error_or_filtered", |
1774 | "dropped_pause", "dropped_bad_phy", "dropped_bad_crc32", | |
1775 | "dropped_unicast_filtered", "dropped_multicast_filtered", | |
0da34b6d | 1776 | "dropped_runt", "dropped_overrun", "dropped_no_small_buffer", |
b53bef84 BG |
1777 | "dropped_no_big_buffer" |
1778 | }; | |
1779 | ||
1780 | static const char myri10ge_gstrings_slice_stats[][ETH_GSTRING_LEN] = { | |
1781 | "----------- slice ---------", | |
1782 | "tx_pkt_start", "tx_pkt_done", "tx_req", "tx_done", | |
1783 | "rx_small_cnt", "rx_big_cnt", | |
1784 | "wake_queue", "stop_queue", "tx_linearized", "LRO aggregated", | |
1785 | "LRO flushed", | |
1e6e9342 | 1786 | "LRO avg aggr", "LRO no_desc" |
0da34b6d BG |
1787 | }; |
1788 | ||
1789 | #define MYRI10GE_NET_STATS_LEN 21 | |
b53bef84 BG |
1790 | #define MYRI10GE_MAIN_STATS_LEN ARRAY_SIZE(myri10ge_gstrings_main_stats) |
1791 | #define MYRI10GE_SLICE_STATS_LEN ARRAY_SIZE(myri10ge_gstrings_slice_stats) | |
0da34b6d BG |
1792 | |
1793 | static void | |
1794 | myri10ge_get_strings(struct net_device *netdev, u32 stringset, u8 * data) | |
1795 | { | |
0dcffac1 BG |
1796 | struct myri10ge_priv *mgp = netdev_priv(netdev); |
1797 | int i; | |
1798 | ||
0da34b6d BG |
1799 | switch (stringset) { |
1800 | case ETH_SS_STATS: | |
b53bef84 BG |
1801 | memcpy(data, *myri10ge_gstrings_main_stats, |
1802 | sizeof(myri10ge_gstrings_main_stats)); | |
1803 | data += sizeof(myri10ge_gstrings_main_stats); | |
0dcffac1 BG |
1804 | for (i = 0; i < mgp->num_slices; i++) { |
1805 | memcpy(data, *myri10ge_gstrings_slice_stats, | |
1806 | sizeof(myri10ge_gstrings_slice_stats)); | |
1807 | data += sizeof(myri10ge_gstrings_slice_stats); | |
1808 | } | |
0da34b6d BG |
1809 | break; |
1810 | } | |
1811 | } | |
1812 | ||
b9f2c044 | 1813 | static int myri10ge_get_sset_count(struct net_device *netdev, int sset) |
0da34b6d | 1814 | { |
0dcffac1 BG |
1815 | struct myri10ge_priv *mgp = netdev_priv(netdev); |
1816 | ||
b9f2c044 JG |
1817 | switch (sset) { |
1818 | case ETH_SS_STATS: | |
0dcffac1 BG |
1819 | return MYRI10GE_MAIN_STATS_LEN + |
1820 | mgp->num_slices * MYRI10GE_SLICE_STATS_LEN; | |
b9f2c044 JG |
1821 | default: |
1822 | return -EOPNOTSUPP; | |
1823 | } | |
0da34b6d BG |
1824 | } |
1825 | ||
1826 | static void | |
1827 | myri10ge_get_ethtool_stats(struct net_device *netdev, | |
1828 | struct ethtool_stats *stats, u64 * data) | |
1829 | { | |
1830 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
b53bef84 | 1831 | struct myri10ge_slice_state *ss; |
0dcffac1 | 1832 | int slice; |
0da34b6d BG |
1833 | int i; |
1834 | ||
59081825 BG |
1835 | /* force stats update */ |
1836 | (void)myri10ge_get_stats(netdev); | |
0da34b6d | 1837 | for (i = 0; i < MYRI10GE_NET_STATS_LEN; i++) |
6dc34941 | 1838 | data[i] = ((unsigned long *)&netdev->stats)[i]; |
0da34b6d | 1839 | |
b53bef84 | 1840 | data[i++] = (unsigned int)mgp->tx_boundary; |
276e26c3 | 1841 | data[i++] = (unsigned int)mgp->wc_enabled; |
2c1a1088 BG |
1842 | data[i++] = (unsigned int)mgp->pdev->irq; |
1843 | data[i++] = (unsigned int)mgp->msi_enabled; | |
0dcffac1 | 1844 | data[i++] = (unsigned int)mgp->msix_enabled; |
0da34b6d BG |
1845 | data[i++] = (unsigned int)mgp->read_dma; |
1846 | data[i++] = (unsigned int)mgp->write_dma; | |
1847 | data[i++] = (unsigned int)mgp->read_write_dma; | |
1848 | data[i++] = (unsigned int)mgp->serial_number; | |
0da34b6d | 1849 | data[i++] = (unsigned int)mgp->watchdog_resets; |
5dd2d332 | 1850 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
1851 | data[i++] = (unsigned int)(mgp->ss[0].dca_tag != NULL); |
1852 | data[i++] = (unsigned int)(mgp->dca_enabled); | |
1853 | #endif | |
c58ac5ca | 1854 | data[i++] = (unsigned int)mgp->link_changes; |
b53bef84 BG |
1855 | |
1856 | /* firmware stats are useful only in the first slice */ | |
0dcffac1 | 1857 | ss = &mgp->ss[0]; |
b53bef84 BG |
1858 | data[i++] = (unsigned int)ntohl(ss->fw_stats->link_up); |
1859 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_link_overflow); | |
cee505db | 1860 | data[i++] = |
b53bef84 BG |
1861 | (unsigned int)ntohl(ss->fw_stats->dropped_link_error_or_filtered); |
1862 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_pause); | |
1863 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_bad_phy); | |
1864 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_bad_crc32); | |
1865 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_unicast_filtered); | |
85a7ea1b | 1866 | data[i++] = |
b53bef84 BG |
1867 | (unsigned int)ntohl(ss->fw_stats->dropped_multicast_filtered); |
1868 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_runt); | |
1869 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_overrun); | |
1870 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_no_small_buffer); | |
1871 | data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_no_big_buffer); | |
1872 | ||
0dcffac1 BG |
1873 | for (slice = 0; slice < mgp->num_slices; slice++) { |
1874 | ss = &mgp->ss[slice]; | |
1875 | data[i++] = slice; | |
1876 | data[i++] = (unsigned int)ss->tx.pkt_start; | |
1877 | data[i++] = (unsigned int)ss->tx.pkt_done; | |
1878 | data[i++] = (unsigned int)ss->tx.req; | |
1879 | data[i++] = (unsigned int)ss->tx.done; | |
1880 | data[i++] = (unsigned int)ss->rx_small.cnt; | |
1881 | data[i++] = (unsigned int)ss->rx_big.cnt; | |
1882 | data[i++] = (unsigned int)ss->tx.wake_queue; | |
1883 | data[i++] = (unsigned int)ss->tx.stop_queue; | |
1884 | data[i++] = (unsigned int)ss->tx.linearized; | |
1885 | data[i++] = ss->rx_done.lro_mgr.stats.aggregated; | |
1886 | data[i++] = ss->rx_done.lro_mgr.stats.flushed; | |
1887 | if (ss->rx_done.lro_mgr.stats.flushed) | |
1888 | data[i++] = ss->rx_done.lro_mgr.stats.aggregated / | |
1889 | ss->rx_done.lro_mgr.stats.flushed; | |
1890 | else | |
1891 | data[i++] = 0; | |
1892 | data[i++] = ss->rx_done.lro_mgr.stats.no_desc; | |
1893 | } | |
0da34b6d BG |
1894 | } |
1895 | ||
c58ac5ca BG |
1896 | static void myri10ge_set_msglevel(struct net_device *netdev, u32 value) |
1897 | { | |
1898 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1899 | mgp->msg_enable = value; | |
1900 | } | |
1901 | ||
1902 | static u32 myri10ge_get_msglevel(struct net_device *netdev) | |
1903 | { | |
1904 | struct myri10ge_priv *mgp = netdev_priv(netdev); | |
1905 | return mgp->msg_enable; | |
1906 | } | |
1907 | ||
7282d491 | 1908 | static const struct ethtool_ops myri10ge_ethtool_ops = { |
0da34b6d BG |
1909 | .get_settings = myri10ge_get_settings, |
1910 | .get_drvinfo = myri10ge_get_drvinfo, | |
1911 | .get_coalesce = myri10ge_get_coalesce, | |
1912 | .set_coalesce = myri10ge_set_coalesce, | |
1913 | .get_pauseparam = myri10ge_get_pauseparam, | |
1914 | .set_pauseparam = myri10ge_set_pauseparam, | |
1915 | .get_ringparam = myri10ge_get_ringparam, | |
1916 | .get_rx_csum = myri10ge_get_rx_csum, | |
1917 | .set_rx_csum = myri10ge_set_rx_csum, | |
b10c0668 | 1918 | .set_tx_csum = ethtool_op_set_tx_hw_csum, |
0da34b6d | 1919 | .set_sg = ethtool_op_set_sg, |
4f93fde0 | 1920 | .set_tso = myri10ge_set_tso, |
6ffdd071 | 1921 | .get_link = ethtool_op_get_link, |
0da34b6d | 1922 | .get_strings = myri10ge_get_strings, |
b9f2c044 | 1923 | .get_sset_count = myri10ge_get_sset_count, |
c58ac5ca BG |
1924 | .get_ethtool_stats = myri10ge_get_ethtool_stats, |
1925 | .set_msglevel = myri10ge_set_msglevel, | |
3a0c7d2d BG |
1926 | .get_msglevel = myri10ge_get_msglevel, |
1927 | .get_flags = ethtool_op_get_flags, | |
1928 | .set_flags = ethtool_op_set_flags | |
0da34b6d BG |
1929 | }; |
1930 | ||
b53bef84 | 1931 | static int myri10ge_allocate_rings(struct myri10ge_slice_state *ss) |
0da34b6d | 1932 | { |
b53bef84 | 1933 | struct myri10ge_priv *mgp = ss->mgp; |
0da34b6d | 1934 | struct myri10ge_cmd cmd; |
b53bef84 | 1935 | struct net_device *dev = mgp->dev; |
0da34b6d BG |
1936 | int tx_ring_size, rx_ring_size; |
1937 | int tx_ring_entries, rx_ring_entries; | |
0dcffac1 | 1938 | int i, slice, status; |
0da34b6d BG |
1939 | size_t bytes; |
1940 | ||
0da34b6d | 1941 | /* get ring sizes */ |
0dcffac1 BG |
1942 | slice = ss - mgp->ss; |
1943 | cmd.data0 = slice; | |
0da34b6d BG |
1944 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_RING_SIZE, &cmd, 0); |
1945 | tx_ring_size = cmd.data0; | |
0dcffac1 | 1946 | cmd.data0 = slice; |
0da34b6d | 1947 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_RX_RING_SIZE, &cmd, 0); |
355c7265 BG |
1948 | if (status != 0) |
1949 | return status; | |
0da34b6d BG |
1950 | rx_ring_size = cmd.data0; |
1951 | ||
1952 | tx_ring_entries = tx_ring_size / sizeof(struct mcp_kreq_ether_send); | |
1953 | rx_ring_entries = rx_ring_size / sizeof(struct mcp_dma_addr); | |
b53bef84 BG |
1954 | ss->tx.mask = tx_ring_entries - 1; |
1955 | ss->rx_small.mask = ss->rx_big.mask = rx_ring_entries - 1; | |
0da34b6d | 1956 | |
355c7265 BG |
1957 | status = -ENOMEM; |
1958 | ||
0da34b6d BG |
1959 | /* allocate the host shadow rings */ |
1960 | ||
1961 | bytes = 8 + (MYRI10GE_MAX_SEND_DESC_TSO + 4) | |
b53bef84 BG |
1962 | * sizeof(*ss->tx.req_list); |
1963 | ss->tx.req_bytes = kzalloc(bytes, GFP_KERNEL); | |
1964 | if (ss->tx.req_bytes == NULL) | |
0da34b6d BG |
1965 | goto abort_with_nothing; |
1966 | ||
1967 | /* ensure req_list entries are aligned to 8 bytes */ | |
b53bef84 BG |
1968 | ss->tx.req_list = (struct mcp_kreq_ether_send *) |
1969 | ALIGN((unsigned long)ss->tx.req_bytes, 8); | |
236bb5e6 | 1970 | ss->tx.queue_active = 0; |
0da34b6d | 1971 | |
b53bef84 BG |
1972 | bytes = rx_ring_entries * sizeof(*ss->rx_small.shadow); |
1973 | ss->rx_small.shadow = kzalloc(bytes, GFP_KERNEL); | |
1974 | if (ss->rx_small.shadow == NULL) | |
0da34b6d BG |
1975 | goto abort_with_tx_req_bytes; |
1976 | ||
b53bef84 BG |
1977 | bytes = rx_ring_entries * sizeof(*ss->rx_big.shadow); |
1978 | ss->rx_big.shadow = kzalloc(bytes, GFP_KERNEL); | |
1979 | if (ss->rx_big.shadow == NULL) | |
0da34b6d BG |
1980 | goto abort_with_rx_small_shadow; |
1981 | ||
1982 | /* allocate the host info rings */ | |
1983 | ||
b53bef84 BG |
1984 | bytes = tx_ring_entries * sizeof(*ss->tx.info); |
1985 | ss->tx.info = kzalloc(bytes, GFP_KERNEL); | |
1986 | if (ss->tx.info == NULL) | |
0da34b6d BG |
1987 | goto abort_with_rx_big_shadow; |
1988 | ||
b53bef84 BG |
1989 | bytes = rx_ring_entries * sizeof(*ss->rx_small.info); |
1990 | ss->rx_small.info = kzalloc(bytes, GFP_KERNEL); | |
1991 | if (ss->rx_small.info == NULL) | |
0da34b6d BG |
1992 | goto abort_with_tx_info; |
1993 | ||
b53bef84 BG |
1994 | bytes = rx_ring_entries * sizeof(*ss->rx_big.info); |
1995 | ss->rx_big.info = kzalloc(bytes, GFP_KERNEL); | |
1996 | if (ss->rx_big.info == NULL) | |
0da34b6d BG |
1997 | goto abort_with_rx_small_info; |
1998 | ||
1999 | /* Fill the receive rings */ | |
b53bef84 BG |
2000 | ss->rx_big.cnt = 0; |
2001 | ss->rx_small.cnt = 0; | |
2002 | ss->rx_big.fill_cnt = 0; | |
2003 | ss->rx_small.fill_cnt = 0; | |
2004 | ss->rx_small.page_offset = MYRI10GE_ALLOC_SIZE; | |
2005 | ss->rx_big.page_offset = MYRI10GE_ALLOC_SIZE; | |
2006 | ss->rx_small.watchdog_needed = 0; | |
2007 | ss->rx_big.watchdog_needed = 0; | |
2008 | myri10ge_alloc_rx_pages(mgp, &ss->rx_small, | |
c7dab99b | 2009 | mgp->small_bytes + MXGEFW_PAD, 0); |
0da34b6d | 2010 | |
b53bef84 | 2011 | if (ss->rx_small.fill_cnt < ss->rx_small.mask + 1) { |
0dcffac1 BG |
2012 | printk(KERN_ERR |
2013 | "myri10ge: %s:slice-%d: alloced only %d small bufs\n", | |
2014 | dev->name, slice, ss->rx_small.fill_cnt); | |
c7dab99b | 2015 | goto abort_with_rx_small_ring; |
0da34b6d BG |
2016 | } |
2017 | ||
b53bef84 BG |
2018 | myri10ge_alloc_rx_pages(mgp, &ss->rx_big, mgp->big_bytes, 0); |
2019 | if (ss->rx_big.fill_cnt < ss->rx_big.mask + 1) { | |
0dcffac1 BG |
2020 | printk(KERN_ERR |
2021 | "myri10ge: %s:slice-%d: alloced only %d big bufs\n", | |
2022 | dev->name, slice, ss->rx_big.fill_cnt); | |
c7dab99b | 2023 | goto abort_with_rx_big_ring; |
0da34b6d BG |
2024 | } |
2025 | ||
2026 | return 0; | |
2027 | ||
2028 | abort_with_rx_big_ring: | |
b53bef84 BG |
2029 | for (i = ss->rx_big.cnt; i < ss->rx_big.fill_cnt; i++) { |
2030 | int idx = i & ss->rx_big.mask; | |
2031 | myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_big.info[idx], | |
c7dab99b | 2032 | mgp->big_bytes); |
b53bef84 | 2033 | put_page(ss->rx_big.info[idx].page); |
0da34b6d BG |
2034 | } |
2035 | ||
2036 | abort_with_rx_small_ring: | |
b53bef84 BG |
2037 | for (i = ss->rx_small.cnt; i < ss->rx_small.fill_cnt; i++) { |
2038 | int idx = i & ss->rx_small.mask; | |
2039 | myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_small.info[idx], | |
c7dab99b | 2040 | mgp->small_bytes + MXGEFW_PAD); |
b53bef84 | 2041 | put_page(ss->rx_small.info[idx].page); |
0da34b6d | 2042 | } |
c7dab99b | 2043 | |
b53bef84 | 2044 | kfree(ss->rx_big.info); |
0da34b6d BG |
2045 | |
2046 | abort_with_rx_small_info: | |
b53bef84 | 2047 | kfree(ss->rx_small.info); |
0da34b6d BG |
2048 | |
2049 | abort_with_tx_info: | |
b53bef84 | 2050 | kfree(ss->tx.info); |
0da34b6d BG |
2051 | |
2052 | abort_with_rx_big_shadow: | |
b53bef84 | 2053 | kfree(ss->rx_big.shadow); |
0da34b6d BG |
2054 | |
2055 | abort_with_rx_small_shadow: | |
b53bef84 | 2056 | kfree(ss->rx_small.shadow); |
0da34b6d BG |
2057 | |
2058 | abort_with_tx_req_bytes: | |
b53bef84 BG |
2059 | kfree(ss->tx.req_bytes); |
2060 | ss->tx.req_bytes = NULL; | |
2061 | ss->tx.req_list = NULL; | |
0da34b6d BG |
2062 | |
2063 | abort_with_nothing: | |
2064 | return status; | |
2065 | } | |
2066 | ||
b53bef84 | 2067 | static void myri10ge_free_rings(struct myri10ge_slice_state *ss) |
0da34b6d | 2068 | { |
b53bef84 | 2069 | struct myri10ge_priv *mgp = ss->mgp; |
0da34b6d BG |
2070 | struct sk_buff *skb; |
2071 | struct myri10ge_tx_buf *tx; | |
2072 | int i, len, idx; | |
2073 | ||
0dcffac1 BG |
2074 | /* If not allocated, skip it */ |
2075 | if (ss->tx.req_list == NULL) | |
2076 | return; | |
2077 | ||
b53bef84 BG |
2078 | for (i = ss->rx_big.cnt; i < ss->rx_big.fill_cnt; i++) { |
2079 | idx = i & ss->rx_big.mask; | |
2080 | if (i == ss->rx_big.fill_cnt - 1) | |
2081 | ss->rx_big.info[idx].page_offset = MYRI10GE_ALLOC_SIZE; | |
2082 | myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_big.info[idx], | |
c7dab99b | 2083 | mgp->big_bytes); |
b53bef84 | 2084 | put_page(ss->rx_big.info[idx].page); |
0da34b6d BG |
2085 | } |
2086 | ||
b53bef84 BG |
2087 | for (i = ss->rx_small.cnt; i < ss->rx_small.fill_cnt; i++) { |
2088 | idx = i & ss->rx_small.mask; | |
2089 | if (i == ss->rx_small.fill_cnt - 1) | |
2090 | ss->rx_small.info[idx].page_offset = | |
c7dab99b | 2091 | MYRI10GE_ALLOC_SIZE; |
b53bef84 | 2092 | myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_small.info[idx], |
c7dab99b | 2093 | mgp->small_bytes + MXGEFW_PAD); |
b53bef84 | 2094 | put_page(ss->rx_small.info[idx].page); |
c7dab99b | 2095 | } |
b53bef84 | 2096 | tx = &ss->tx; |
0da34b6d BG |
2097 | while (tx->done != tx->req) { |
2098 | idx = tx->done & tx->mask; | |
2099 | skb = tx->info[idx].skb; | |
2100 | ||
2101 | /* Mark as free */ | |
2102 | tx->info[idx].skb = NULL; | |
2103 | tx->done++; | |
2104 | len = pci_unmap_len(&tx->info[idx], len); | |
2105 | pci_unmap_len_set(&tx->info[idx], len, 0); | |
2106 | if (skb) { | |
b53bef84 | 2107 | ss->stats.tx_dropped++; |
0da34b6d BG |
2108 | dev_kfree_skb_any(skb); |
2109 | if (len) | |
2110 | pci_unmap_single(mgp->pdev, | |
2111 | pci_unmap_addr(&tx->info[idx], | |
2112 | bus), len, | |
2113 | PCI_DMA_TODEVICE); | |
2114 | } else { | |
2115 | if (len) | |
2116 | pci_unmap_page(mgp->pdev, | |
2117 | pci_unmap_addr(&tx->info[idx], | |
2118 | bus), len, | |
2119 | PCI_DMA_TODEVICE); | |
2120 | } | |
2121 | } | |
b53bef84 | 2122 | kfree(ss->rx_big.info); |
0da34b6d | 2123 | |
b53bef84 | 2124 | kfree(ss->rx_small.info); |
0da34b6d | 2125 | |
b53bef84 | 2126 | kfree(ss->tx.info); |
0da34b6d | 2127 | |
b53bef84 | 2128 | kfree(ss->rx_big.shadow); |
0da34b6d | 2129 | |
b53bef84 | 2130 | kfree(ss->rx_small.shadow); |
0da34b6d | 2131 | |
b53bef84 BG |
2132 | kfree(ss->tx.req_bytes); |
2133 | ss->tx.req_bytes = NULL; | |
2134 | ss->tx.req_list = NULL; | |
0da34b6d BG |
2135 | } |
2136 | ||
df30a740 BG |
2137 | static int myri10ge_request_irq(struct myri10ge_priv *mgp) |
2138 | { | |
2139 | struct pci_dev *pdev = mgp->pdev; | |
0dcffac1 BG |
2140 | struct myri10ge_slice_state *ss; |
2141 | struct net_device *netdev = mgp->dev; | |
2142 | int i; | |
df30a740 BG |
2143 | int status; |
2144 | ||
0dcffac1 BG |
2145 | mgp->msi_enabled = 0; |
2146 | mgp->msix_enabled = 0; | |
2147 | status = 0; | |
df30a740 | 2148 | if (myri10ge_msi) { |
0dcffac1 BG |
2149 | if (mgp->num_slices > 1) { |
2150 | status = | |
2151 | pci_enable_msix(pdev, mgp->msix_vectors, | |
2152 | mgp->num_slices); | |
2153 | if (status == 0) { | |
2154 | mgp->msix_enabled = 1; | |
2155 | } else { | |
2156 | dev_err(&pdev->dev, | |
2157 | "Error %d setting up MSI-X\n", status); | |
2158 | return status; | |
2159 | } | |
2160 | } | |
2161 | if (mgp->msix_enabled == 0) { | |
2162 | status = pci_enable_msi(pdev); | |
2163 | if (status != 0) { | |
2164 | dev_err(&pdev->dev, | |
2165 | "Error %d setting up MSI; falling back to xPIC\n", | |
2166 | status); | |
2167 | } else { | |
2168 | mgp->msi_enabled = 1; | |
2169 | } | |
2170 | } | |
df30a740 | 2171 | } |
0dcffac1 BG |
2172 | if (mgp->msix_enabled) { |
2173 | for (i = 0; i < mgp->num_slices; i++) { | |
2174 | ss = &mgp->ss[i]; | |
2175 | snprintf(ss->irq_desc, sizeof(ss->irq_desc), | |
2176 | "%s:slice-%d", netdev->name, i); | |
2177 | status = request_irq(mgp->msix_vectors[i].vector, | |
2178 | myri10ge_intr, 0, ss->irq_desc, | |
2179 | ss); | |
2180 | if (status != 0) { | |
2181 | dev_err(&pdev->dev, | |
2182 | "slice %d failed to allocate IRQ\n", i); | |
2183 | i--; | |
2184 | while (i >= 0) { | |
2185 | free_irq(mgp->msix_vectors[i].vector, | |
2186 | &mgp->ss[i]); | |
2187 | i--; | |
2188 | } | |
2189 | pci_disable_msix(pdev); | |
2190 | return status; | |
2191 | } | |
2192 | } | |
2193 | } else { | |
2194 | status = request_irq(pdev->irq, myri10ge_intr, IRQF_SHARED, | |
2195 | mgp->dev->name, &mgp->ss[0]); | |
2196 | if (status != 0) { | |
2197 | dev_err(&pdev->dev, "failed to allocate IRQ\n"); | |
2198 | if (mgp->msi_enabled) | |
2199 | pci_disable_msi(pdev); | |
2200 | } | |
df30a740 BG |
2201 | } |
2202 | return status; | |
2203 | } | |
2204 | ||
2205 | static void myri10ge_free_irq(struct myri10ge_priv *mgp) | |
2206 | { | |
2207 | struct pci_dev *pdev = mgp->pdev; | |
0dcffac1 | 2208 | int i; |
df30a740 | 2209 | |
0dcffac1 BG |
2210 | if (mgp->msix_enabled) { |
2211 | for (i = 0; i < mgp->num_slices; i++) | |
2212 | free_irq(mgp->msix_vectors[i].vector, &mgp->ss[i]); | |
2213 | } else { | |
2214 | free_irq(pdev->irq, &mgp->ss[0]); | |
2215 | } | |
df30a740 BG |
2216 | if (mgp->msi_enabled) |
2217 | pci_disable_msi(pdev); | |
0dcffac1 BG |
2218 | if (mgp->msix_enabled) |
2219 | pci_disable_msix(pdev); | |
df30a740 BG |
2220 | } |
2221 | ||
1e6e9342 AG |
2222 | static int |
2223 | myri10ge_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr, | |
2224 | void **ip_hdr, void **tcpudp_hdr, | |
2225 | u64 * hdr_flags, void *priv) | |
2226 | { | |
2227 | struct ethhdr *eh; | |
2228 | struct vlan_ethhdr *veh; | |
2229 | struct iphdr *iph; | |
2230 | u8 *va = page_address(frag->page) + frag->page_offset; | |
2231 | unsigned long ll_hlen; | |
66341fff AV |
2232 | /* passed opaque through lro_receive_frags() */ |
2233 | __wsum csum = (__force __wsum) (unsigned long)priv; | |
1e6e9342 AG |
2234 | |
2235 | /* find the mac header, aborting if not IPv4 */ | |
2236 | ||
2237 | eh = (struct ethhdr *)va; | |
2238 | *mac_hdr = eh; | |
2239 | ll_hlen = ETH_HLEN; | |
2240 | if (eh->h_proto != htons(ETH_P_IP)) { | |
2241 | if (eh->h_proto == htons(ETH_P_8021Q)) { | |
2242 | veh = (struct vlan_ethhdr *)va; | |
2243 | if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP)) | |
2244 | return -1; | |
2245 | ||
2246 | ll_hlen += VLAN_HLEN; | |
2247 | ||
2248 | /* | |
2249 | * HW checksum starts ETH_HLEN bytes into | |
2250 | * frame, so we must subtract off the VLAN | |
2251 | * header's checksum before csum can be used | |
2252 | */ | |
2253 | csum = csum_sub(csum, csum_partial(va + ETH_HLEN, | |
2254 | VLAN_HLEN, 0)); | |
2255 | } else { | |
2256 | return -1; | |
2257 | } | |
2258 | } | |
2259 | *hdr_flags = LRO_IPV4; | |
2260 | ||
2261 | iph = (struct iphdr *)(va + ll_hlen); | |
2262 | *ip_hdr = iph; | |
2263 | if (iph->protocol != IPPROTO_TCP) | |
2264 | return -1; | |
bcb09dc2 BG |
2265 | if (iph->frag_off & htons(IP_MF | IP_OFFSET)) |
2266 | return -1; | |
1e6e9342 AG |
2267 | *hdr_flags |= LRO_TCP; |
2268 | *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2); | |
2269 | ||
2270 | /* verify the IP checksum */ | |
2271 | if (unlikely(ip_fast_csum((u8 *) iph, iph->ihl))) | |
2272 | return -1; | |
2273 | ||
2274 | /* verify the checksum */ | |
2275 | if (unlikely(csum_tcpudp_magic(iph->saddr, iph->daddr, | |
2276 | ntohs(iph->tot_len) - (iph->ihl << 2), | |
2277 | IPPROTO_TCP, csum))) | |
2278 | return -1; | |
2279 | ||
2280 | return 0; | |
2281 | } | |
2282 | ||
77929732 BG |
2283 | static int myri10ge_get_txrx(struct myri10ge_priv *mgp, int slice) |
2284 | { | |
2285 | struct myri10ge_cmd cmd; | |
2286 | struct myri10ge_slice_state *ss; | |
2287 | int status; | |
2288 | ||
2289 | ss = &mgp->ss[slice]; | |
236bb5e6 BG |
2290 | status = 0; |
2291 | if (slice == 0 || (mgp->dev->real_num_tx_queues > 1)) { | |
2292 | cmd.data0 = slice; | |
2293 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_OFFSET, | |
2294 | &cmd, 0); | |
2295 | ss->tx.lanai = (struct mcp_kreq_ether_send __iomem *) | |
2296 | (mgp->sram + cmd.data0); | |
2297 | } | |
77929732 BG |
2298 | cmd.data0 = slice; |
2299 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SMALL_RX_OFFSET, | |
2300 | &cmd, 0); | |
2301 | ss->rx_small.lanai = (struct mcp_kreq_ether_recv __iomem *) | |
2302 | (mgp->sram + cmd.data0); | |
2303 | ||
2304 | cmd.data0 = slice; | |
2305 | status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_BIG_RX_OFFSET, &cmd, 0); | |
2306 | ss->rx_big.lanai = (struct mcp_kreq_ether_recv __iomem *) | |
2307 | (mgp->sram + cmd.data0); | |
2308 | ||
236bb5e6 BG |
2309 | ss->tx.send_go = (__iomem __be32 *) |
2310 | (mgp->sram + MXGEFW_ETH_SEND_GO + 64 * slice); | |
2311 | ss->tx.send_stop = (__iomem __be32 *) | |
2312 | (mgp->sram + MXGEFW_ETH_SEND_STOP + 64 * slice); | |
77929732 BG |
2313 | return status; |
2314 | ||
2315 | } | |
2316 | ||
2317 | static int myri10ge_set_stats(struct myri10ge_priv *mgp, int slice) | |
2318 | { | |
2319 | struct myri10ge_cmd cmd; | |
2320 | struct myri10ge_slice_state *ss; | |
2321 | int status; | |
2322 | ||
2323 | ss = &mgp->ss[slice]; | |
2324 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(ss->fw_stats_bus); | |
2325 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(ss->fw_stats_bus); | |
236bb5e6 | 2326 | cmd.data2 = sizeof(struct mcp_irq_data) | (slice << 16); |
77929732 BG |
2327 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_STATS_DMA_V2, &cmd, 0); |
2328 | if (status == -ENOSYS) { | |
2329 | dma_addr_t bus = ss->fw_stats_bus; | |
2330 | if (slice != 0) | |
2331 | return -EINVAL; | |
2332 | bus += offsetof(struct mcp_irq_data, send_done_count); | |
2333 | cmd.data0 = MYRI10GE_LOWPART_TO_U32(bus); | |
2334 | cmd.data1 = MYRI10GE_HIGHPART_TO_U32(bus); | |
2335 | status = myri10ge_send_cmd(mgp, | |
2336 | MXGEFW_CMD_SET_STATS_DMA_OBSOLETE, | |
2337 | &cmd, 0); | |
2338 | /* Firmware cannot support multicast without STATS_DMA_V2 */ | |
2339 | mgp->fw_multicast_support = 0; | |
2340 | } else { | |
2341 | mgp->fw_multicast_support = 1; | |
2342 | } | |
2343 | return 0; | |
2344 | } | |
77929732 | 2345 | |
0da34b6d BG |
2346 | static int myri10ge_open(struct net_device *dev) |
2347 | { | |
0dcffac1 | 2348 | struct myri10ge_slice_state *ss; |
b53bef84 | 2349 | struct myri10ge_priv *mgp = netdev_priv(dev); |
0da34b6d | 2350 | struct myri10ge_cmd cmd; |
0dcffac1 BG |
2351 | int i, status, big_pow2, slice; |
2352 | u8 *itable; | |
1e6e9342 | 2353 | struct net_lro_mgr *lro_mgr; |
0da34b6d | 2354 | |
0da34b6d BG |
2355 | if (mgp->running != MYRI10GE_ETH_STOPPED) |
2356 | return -EBUSY; | |
2357 | ||
2358 | mgp->running = MYRI10GE_ETH_STARTING; | |
2359 | status = myri10ge_reset(mgp); | |
2360 | if (status != 0) { | |
2361 | printk(KERN_ERR "myri10ge: %s: failed reset\n", dev->name); | |
df30a740 | 2362 | goto abort_with_nothing; |
0da34b6d BG |
2363 | } |
2364 | ||
0dcffac1 BG |
2365 | if (mgp->num_slices > 1) { |
2366 | cmd.data0 = mgp->num_slices; | |
236bb5e6 BG |
2367 | cmd.data1 = MXGEFW_SLICE_INTR_MODE_ONE_PER_SLICE; |
2368 | if (mgp->dev->real_num_tx_queues > 1) | |
2369 | cmd.data1 |= MXGEFW_SLICE_ENABLE_MULTIPLE_TX_QUEUES; | |
0dcffac1 BG |
2370 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ENABLE_RSS_QUEUES, |
2371 | &cmd, 0); | |
2372 | if (status != 0) { | |
2373 | printk(KERN_ERR | |
2374 | "myri10ge: %s: failed to set number of slices\n", | |
2375 | dev->name); | |
2376 | goto abort_with_nothing; | |
2377 | } | |
2378 | /* setup the indirection table */ | |
2379 | cmd.data0 = mgp->num_slices; | |
2380 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_RSS_TABLE_SIZE, | |
2381 | &cmd, 0); | |
2382 | ||
2383 | status |= myri10ge_send_cmd(mgp, | |
2384 | MXGEFW_CMD_GET_RSS_TABLE_OFFSET, | |
2385 | &cmd, 0); | |
2386 | if (status != 0) { | |
2387 | printk(KERN_ERR | |
2388 | "myri10ge: %s: failed to setup rss tables\n", | |
2389 | dev->name); | |
236bb5e6 | 2390 | goto abort_with_nothing; |
0dcffac1 BG |
2391 | } |
2392 | ||
2393 | /* just enable an identity mapping */ | |
2394 | itable = mgp->sram + cmd.data0; | |
2395 | for (i = 0; i < mgp->num_slices; i++) | |
2396 | __raw_writeb(i, &itable[i]); | |
2397 | ||
2398 | cmd.data0 = 1; | |
2399 | cmd.data1 = myri10ge_rss_hash; | |
2400 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_RSS_ENABLE, | |
2401 | &cmd, 0); | |
2402 | if (status != 0) { | |
2403 | printk(KERN_ERR | |
2404 | "myri10ge: %s: failed to enable slices\n", | |
2405 | dev->name); | |
2406 | goto abort_with_nothing; | |
2407 | } | |
2408 | } | |
2409 | ||
df30a740 BG |
2410 | status = myri10ge_request_irq(mgp); |
2411 | if (status != 0) | |
2412 | goto abort_with_nothing; | |
2413 | ||
0da34b6d BG |
2414 | /* decide what small buffer size to use. For good TCP rx |
2415 | * performance, it is important to not receive 1514 byte | |
2416 | * frames into jumbo buffers, as it confuses the socket buffer | |
2417 | * accounting code, leading to drops and erratic performance. | |
2418 | */ | |
2419 | ||
2420 | if (dev->mtu <= ETH_DATA_LEN) | |
c7dab99b BG |
2421 | /* enough for a TCP header */ |
2422 | mgp->small_bytes = (128 > SMP_CACHE_BYTES) | |
2423 | ? (128 - MXGEFW_PAD) | |
2424 | : (SMP_CACHE_BYTES - MXGEFW_PAD); | |
0da34b6d | 2425 | else |
de3c4507 BG |
2426 | /* enough for a vlan encapsulated ETH_DATA_LEN frame */ |
2427 | mgp->small_bytes = VLAN_ETH_FRAME_LEN; | |
0da34b6d BG |
2428 | |
2429 | /* Override the small buffer size? */ | |
2430 | if (myri10ge_small_bytes > 0) | |
2431 | mgp->small_bytes = myri10ge_small_bytes; | |
2432 | ||
0da34b6d BG |
2433 | /* Firmware needs the big buff size as a power of 2. Lie and |
2434 | * tell him the buffer is larger, because we only use 1 | |
2435 | * buffer/pkt, and the mtu will prevent overruns. | |
2436 | */ | |
13348bee | 2437 | big_pow2 = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD; |
c7dab99b | 2438 | if (big_pow2 < MYRI10GE_ALLOC_SIZE / 2) { |
199126a2 | 2439 | while (!is_power_of_2(big_pow2)) |
c7dab99b | 2440 | big_pow2++; |
13348bee | 2441 | mgp->big_bytes = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD; |
c7dab99b BG |
2442 | } else { |
2443 | big_pow2 = MYRI10GE_ALLOC_SIZE; | |
2444 | mgp->big_bytes = big_pow2; | |
2445 | } | |
2446 | ||
0dcffac1 BG |
2447 | /* setup the per-slice data structures */ |
2448 | for (slice = 0; slice < mgp->num_slices; slice++) { | |
2449 | ss = &mgp->ss[slice]; | |
2450 | ||
2451 | status = myri10ge_get_txrx(mgp, slice); | |
2452 | if (status != 0) { | |
2453 | printk(KERN_ERR | |
2454 | "myri10ge: %s: failed to get ring sizes or locations\n", | |
2455 | dev->name); | |
2456 | goto abort_with_rings; | |
2457 | } | |
2458 | status = myri10ge_allocate_rings(ss); | |
2459 | if (status != 0) | |
2460 | goto abort_with_rings; | |
236bb5e6 BG |
2461 | |
2462 | /* only firmware which supports multiple TX queues | |
2463 | * supports setting up the tx stats on non-zero | |
2464 | * slices */ | |
2465 | if (slice == 0 || mgp->dev->real_num_tx_queues > 1) | |
0dcffac1 BG |
2466 | status = myri10ge_set_stats(mgp, slice); |
2467 | if (status) { | |
2468 | printk(KERN_ERR | |
2469 | "myri10ge: %s: Couldn't set stats DMA\n", | |
2470 | dev->name); | |
2471 | goto abort_with_rings; | |
2472 | } | |
2473 | ||
2474 | lro_mgr = &ss->rx_done.lro_mgr; | |
2475 | lro_mgr->dev = dev; | |
2476 | lro_mgr->features = LRO_F_NAPI; | |
2477 | lro_mgr->ip_summed = CHECKSUM_COMPLETE; | |
2478 | lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY; | |
2479 | lro_mgr->max_desc = MYRI10GE_MAX_LRO_DESCRIPTORS; | |
2480 | lro_mgr->lro_arr = ss->rx_done.lro_desc; | |
2481 | lro_mgr->get_frag_header = myri10ge_get_frag_header; | |
2482 | lro_mgr->max_aggr = myri10ge_lro_max_pkts; | |
636d2f68 | 2483 | lro_mgr->frag_align_pad = 2; |
0dcffac1 BG |
2484 | if (lro_mgr->max_aggr > MAX_SKB_FRAGS) |
2485 | lro_mgr->max_aggr = MAX_SKB_FRAGS; | |
2486 | ||
2487 | /* must happen prior to any irq */ | |
2488 | napi_enable(&(ss)->napi); | |
2489 | } | |
0da34b6d BG |
2490 | |
2491 | /* now give firmware buffers sizes, and MTU */ | |
2492 | cmd.data0 = dev->mtu + ETH_HLEN + VLAN_HLEN; | |
2493 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_MTU, &cmd, 0); | |
2494 | cmd.data0 = mgp->small_bytes; | |
2495 | status |= | |
2496 | myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_SMALL_BUFFER_SIZE, &cmd, 0); | |
2497 | cmd.data0 = big_pow2; | |
2498 | status |= | |
2499 | myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_BIG_BUFFER_SIZE, &cmd, 0); | |
2500 | if (status) { | |
2501 | printk(KERN_ERR "myri10ge: %s: Couldn't set buffer sizes\n", | |
2502 | dev->name); | |
2503 | goto abort_with_rings; | |
2504 | } | |
2505 | ||
0dcffac1 BG |
2506 | /* |
2507 | * Set Linux style TSO mode; this is needed only on newer | |
2508 | * firmware versions. Older versions default to Linux | |
2509 | * style TSO | |
2510 | */ | |
2511 | cmd.data0 = 0; | |
2512 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_TSO_MODE, &cmd, 0); | |
2513 | if (status && status != -ENOSYS) { | |
2514 | printk(KERN_ERR "myri10ge: %s: Couldn't set TSO mode\n", | |
0da34b6d BG |
2515 | dev->name); |
2516 | goto abort_with_rings; | |
2517 | } | |
2518 | ||
66341fff | 2519 | mgp->link_state = ~0U; |
0da34b6d BG |
2520 | mgp->rdma_tags_available = 15; |
2521 | ||
0da34b6d BG |
2522 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_UP, &cmd, 0); |
2523 | if (status) { | |
2524 | printk(KERN_ERR "myri10ge: %s: Couldn't bring up link\n", | |
2525 | dev->name); | |
2526 | goto abort_with_rings; | |
2527 | } | |
2528 | ||
0da34b6d BG |
2529 | mgp->running = MYRI10GE_ETH_RUNNING; |
2530 | mgp->watchdog_timer.expires = jiffies + myri10ge_watchdog_timeout * HZ; | |
2531 | add_timer(&mgp->watchdog_timer); | |
236bb5e6 BG |
2532 | netif_tx_wake_all_queues(dev); |
2533 | ||
0da34b6d BG |
2534 | return 0; |
2535 | ||
2536 | abort_with_rings: | |
051d36f3 BG |
2537 | while (slice) { |
2538 | slice--; | |
2539 | napi_disable(&mgp->ss[slice].napi); | |
2540 | } | |
0dcffac1 BG |
2541 | for (i = 0; i < mgp->num_slices; i++) |
2542 | myri10ge_free_rings(&mgp->ss[i]); | |
0da34b6d | 2543 | |
df30a740 BG |
2544 | myri10ge_free_irq(mgp); |
2545 | ||
0da34b6d BG |
2546 | abort_with_nothing: |
2547 | mgp->running = MYRI10GE_ETH_STOPPED; | |
2548 | return -ENOMEM; | |
2549 | } | |
2550 | ||
2551 | static int myri10ge_close(struct net_device *dev) | |
2552 | { | |
b53bef84 | 2553 | struct myri10ge_priv *mgp = netdev_priv(dev); |
0da34b6d BG |
2554 | struct myri10ge_cmd cmd; |
2555 | int status, old_down_cnt; | |
0dcffac1 | 2556 | int i; |
0da34b6d | 2557 | |
0da34b6d BG |
2558 | if (mgp->running != MYRI10GE_ETH_RUNNING) |
2559 | return 0; | |
2560 | ||
0dcffac1 | 2561 | if (mgp->ss[0].tx.req_bytes == NULL) |
0da34b6d BG |
2562 | return 0; |
2563 | ||
2564 | del_timer_sync(&mgp->watchdog_timer); | |
2565 | mgp->running = MYRI10GE_ETH_STOPPING; | |
0dcffac1 BG |
2566 | for (i = 0; i < mgp->num_slices; i++) { |
2567 | napi_disable(&mgp->ss[i].napi); | |
2568 | } | |
0da34b6d | 2569 | netif_carrier_off(dev); |
236bb5e6 BG |
2570 | |
2571 | netif_tx_stop_all_queues(dev); | |
d0234215 BG |
2572 | if (mgp->rebooted == 0) { |
2573 | old_down_cnt = mgp->down_cnt; | |
2574 | mb(); | |
2575 | status = | |
2576 | myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_DOWN, &cmd, 0); | |
2577 | if (status) | |
2578 | printk(KERN_ERR | |
2579 | "myri10ge: %s: Couldn't bring down link\n", | |
2580 | dev->name); | |
0da34b6d | 2581 | |
d0234215 BG |
2582 | wait_event_timeout(mgp->down_wq, old_down_cnt != mgp->down_cnt, |
2583 | HZ); | |
2584 | if (old_down_cnt == mgp->down_cnt) | |
2585 | printk(KERN_ERR "myri10ge: %s never got down irq\n", | |
2586 | dev->name); | |
2587 | } | |
0da34b6d | 2588 | netif_tx_disable(dev); |
df30a740 | 2589 | myri10ge_free_irq(mgp); |
0dcffac1 BG |
2590 | for (i = 0; i < mgp->num_slices; i++) |
2591 | myri10ge_free_rings(&mgp->ss[i]); | |
0da34b6d BG |
2592 | |
2593 | mgp->running = MYRI10GE_ETH_STOPPED; | |
2594 | return 0; | |
2595 | } | |
2596 | ||
2597 | /* copy an array of struct mcp_kreq_ether_send's to the mcp. Copy | |
2598 | * backwards one at a time and handle ring wraps */ | |
2599 | ||
2600 | static inline void | |
2601 | myri10ge_submit_req_backwards(struct myri10ge_tx_buf *tx, | |
2602 | struct mcp_kreq_ether_send *src, int cnt) | |
2603 | { | |
2604 | int idx, starting_slot; | |
2605 | starting_slot = tx->req; | |
2606 | while (cnt > 1) { | |
2607 | cnt--; | |
2608 | idx = (starting_slot + cnt) & tx->mask; | |
2609 | myri10ge_pio_copy(&tx->lanai[idx], &src[cnt], sizeof(*src)); | |
2610 | mb(); | |
2611 | } | |
2612 | } | |
2613 | ||
2614 | /* | |
2615 | * copy an array of struct mcp_kreq_ether_send's to the mcp. Copy | |
2616 | * at most 32 bytes at a time, so as to avoid involving the software | |
2617 | * pio handler in the nic. We re-write the first segment's flags | |
2618 | * to mark them valid only after writing the entire chain. | |
2619 | */ | |
2620 | ||
2621 | static inline void | |
2622 | myri10ge_submit_req(struct myri10ge_tx_buf *tx, struct mcp_kreq_ether_send *src, | |
2623 | int cnt) | |
2624 | { | |
2625 | int idx, i; | |
2626 | struct mcp_kreq_ether_send __iomem *dstp, *dst; | |
2627 | struct mcp_kreq_ether_send *srcp; | |
2628 | u8 last_flags; | |
2629 | ||
2630 | idx = tx->req & tx->mask; | |
2631 | ||
2632 | last_flags = src->flags; | |
2633 | src->flags = 0; | |
2634 | mb(); | |
2635 | dst = dstp = &tx->lanai[idx]; | |
2636 | srcp = src; | |
2637 | ||
2638 | if ((idx + cnt) < tx->mask) { | |
2639 | for (i = 0; i < (cnt - 1); i += 2) { | |
2640 | myri10ge_pio_copy(dstp, srcp, 2 * sizeof(*src)); | |
2641 | mb(); /* force write every 32 bytes */ | |
2642 | srcp += 2; | |
2643 | dstp += 2; | |
2644 | } | |
2645 | } else { | |
2646 | /* submit all but the first request, and ensure | |
2647 | * that it is submitted below */ | |
2648 | myri10ge_submit_req_backwards(tx, src, cnt); | |
2649 | i = 0; | |
2650 | } | |
2651 | if (i < cnt) { | |
2652 | /* submit the first request */ | |
2653 | myri10ge_pio_copy(dstp, srcp, sizeof(*src)); | |
2654 | mb(); /* barrier before setting valid flag */ | |
2655 | } | |
2656 | ||
2657 | /* re-write the last 32-bits with the valid flags */ | |
2658 | src->flags = last_flags; | |
40f6cff5 | 2659 | put_be32(*((__be32 *) src + 3), (__be32 __iomem *) dst + 3); |
0da34b6d BG |
2660 | tx->req += cnt; |
2661 | mb(); | |
2662 | } | |
2663 | ||
0da34b6d BG |
2664 | /* |
2665 | * Transmit a packet. We need to split the packet so that a single | |
b53bef84 | 2666 | * segment does not cross myri10ge->tx_boundary, so this makes segment |
0da34b6d BG |
2667 | * counting tricky. So rather than try to count segments up front, we |
2668 | * just give up if there are too few segments to hold a reasonably | |
2669 | * fragmented packet currently available. If we run | |
2670 | * out of segments while preparing a packet for DMA, we just linearize | |
2671 | * it and try again. | |
2672 | */ | |
2673 | ||
61357325 SH |
2674 | static netdev_tx_t myri10ge_xmit(struct sk_buff *skb, |
2675 | struct net_device *dev) | |
0da34b6d BG |
2676 | { |
2677 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
b53bef84 | 2678 | struct myri10ge_slice_state *ss; |
0da34b6d | 2679 | struct mcp_kreq_ether_send *req; |
b53bef84 | 2680 | struct myri10ge_tx_buf *tx; |
0da34b6d | 2681 | struct skb_frag_struct *frag; |
236bb5e6 | 2682 | struct netdev_queue *netdev_queue; |
0da34b6d | 2683 | dma_addr_t bus; |
40f6cff5 AV |
2684 | u32 low; |
2685 | __be32 high_swapped; | |
0da34b6d BG |
2686 | unsigned int len; |
2687 | int idx, last_idx, avail, frag_cnt, frag_idx, count, mss, max_segments; | |
236bb5e6 | 2688 | u16 pseudo_hdr_offset, cksum_offset, queue; |
0da34b6d BG |
2689 | int cum_len, seglen, boundary, rdma_count; |
2690 | u8 flags, odd_flag; | |
2691 | ||
236bb5e6 | 2692 | queue = skb_get_queue_mapping(skb); |
236bb5e6 BG |
2693 | ss = &mgp->ss[queue]; |
2694 | netdev_queue = netdev_get_tx_queue(mgp->dev, queue); | |
b53bef84 | 2695 | tx = &ss->tx; |
236bb5e6 | 2696 | |
0da34b6d BG |
2697 | again: |
2698 | req = tx->req_list; | |
2699 | avail = tx->mask - 1 - (tx->req - tx->done); | |
2700 | ||
2701 | mss = 0; | |
2702 | max_segments = MXGEFW_MAX_SEND_DESC; | |
2703 | ||
917690cd | 2704 | if (skb_is_gso(skb)) { |
7967168c | 2705 | mss = skb_shinfo(skb)->gso_size; |
917690cd | 2706 | max_segments = MYRI10GE_MAX_SEND_DESC_TSO; |
0da34b6d | 2707 | } |
0da34b6d BG |
2708 | |
2709 | if ((unlikely(avail < max_segments))) { | |
2710 | /* we are out of transmit resources */ | |
b53bef84 | 2711 | tx->stop_queue++; |
236bb5e6 | 2712 | netif_tx_stop_queue(netdev_queue); |
5b548140 | 2713 | return NETDEV_TX_BUSY; |
0da34b6d BG |
2714 | } |
2715 | ||
2716 | /* Setup checksum offloading, if needed */ | |
2717 | cksum_offset = 0; | |
2718 | pseudo_hdr_offset = 0; | |
2719 | odd_flag = 0; | |
2720 | flags = (MXGEFW_FLAGS_NO_TSO | MXGEFW_FLAGS_FIRST); | |
84fa7933 | 2721 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
ea2ae17d | 2722 | cksum_offset = skb_transport_offset(skb); |
ff1dcadb | 2723 | pseudo_hdr_offset = cksum_offset + skb->csum_offset; |
0da34b6d BG |
2724 | /* If the headers are excessively large, then we must |
2725 | * fall back to a software checksum */ | |
4f93fde0 BG |
2726 | if (unlikely(!mss && (cksum_offset > 255 || |
2727 | pseudo_hdr_offset > 127))) { | |
84fa7933 | 2728 | if (skb_checksum_help(skb)) |
0da34b6d BG |
2729 | goto drop; |
2730 | cksum_offset = 0; | |
2731 | pseudo_hdr_offset = 0; | |
2732 | } else { | |
0da34b6d BG |
2733 | odd_flag = MXGEFW_FLAGS_ALIGN_ODD; |
2734 | flags |= MXGEFW_FLAGS_CKSUM; | |
2735 | } | |
2736 | } | |
2737 | ||
2738 | cum_len = 0; | |
2739 | ||
0da34b6d BG |
2740 | if (mss) { /* TSO */ |
2741 | /* this removes any CKSUM flag from before */ | |
2742 | flags = (MXGEFW_FLAGS_TSO_HDR | MXGEFW_FLAGS_FIRST); | |
2743 | ||
2744 | /* negative cum_len signifies to the | |
2745 | * send loop that we are still in the | |
2746 | * header portion of the TSO packet. | |
4f93fde0 | 2747 | * TSO header can be at most 1KB long */ |
ab6a5bb6 | 2748 | cum_len = -(skb_transport_offset(skb) + tcp_hdrlen(skb)); |
0da34b6d | 2749 | |
4f93fde0 BG |
2750 | /* for IPv6 TSO, the checksum offset stores the |
2751 | * TCP header length, to save the firmware from | |
2752 | * the need to parse the headers */ | |
2753 | if (skb_is_gso_v6(skb)) { | |
2754 | cksum_offset = tcp_hdrlen(skb); | |
2755 | /* Can only handle headers <= max_tso6 long */ | |
2756 | if (unlikely(-cum_len > mgp->max_tso6)) | |
2757 | return myri10ge_sw_tso(skb, dev); | |
2758 | } | |
0da34b6d BG |
2759 | /* for TSO, pseudo_hdr_offset holds mss. |
2760 | * The firmware figures out where to put | |
2761 | * the checksum by parsing the header. */ | |
40f6cff5 | 2762 | pseudo_hdr_offset = mss; |
0da34b6d | 2763 | } else |
0da34b6d BG |
2764 | /* Mark small packets, and pad out tiny packets */ |
2765 | if (skb->len <= MXGEFW_SEND_SMALL_SIZE) { | |
2766 | flags |= MXGEFW_FLAGS_SMALL; | |
2767 | ||
2768 | /* pad frames to at least ETH_ZLEN bytes */ | |
2769 | if (unlikely(skb->len < ETH_ZLEN)) { | |
5b057c6b | 2770 | if (skb_padto(skb, ETH_ZLEN)) { |
0da34b6d BG |
2771 | /* The packet is gone, so we must |
2772 | * return 0 */ | |
b53bef84 | 2773 | ss->stats.tx_dropped += 1; |
6ed10654 | 2774 | return NETDEV_TX_OK; |
0da34b6d BG |
2775 | } |
2776 | /* adjust the len to account for the zero pad | |
2777 | * so that the nic can know how long it is */ | |
2778 | skb->len = ETH_ZLEN; | |
2779 | } | |
2780 | } | |
2781 | ||
2782 | /* map the skb for DMA */ | |
2783 | len = skb->len - skb->data_len; | |
2784 | idx = tx->req & tx->mask; | |
2785 | tx->info[idx].skb = skb; | |
2786 | bus = pci_map_single(mgp->pdev, skb->data, len, PCI_DMA_TODEVICE); | |
2787 | pci_unmap_addr_set(&tx->info[idx], bus, bus); | |
2788 | pci_unmap_len_set(&tx->info[idx], len, len); | |
2789 | ||
2790 | frag_cnt = skb_shinfo(skb)->nr_frags; | |
2791 | frag_idx = 0; | |
2792 | count = 0; | |
2793 | rdma_count = 0; | |
2794 | ||
2795 | /* "rdma_count" is the number of RDMAs belonging to the | |
2796 | * current packet BEFORE the current send request. For | |
2797 | * non-TSO packets, this is equal to "count". | |
2798 | * For TSO packets, rdma_count needs to be reset | |
2799 | * to 0 after a segment cut. | |
2800 | * | |
2801 | * The rdma_count field of the send request is | |
2802 | * the number of RDMAs of the packet starting at | |
2803 | * that request. For TSO send requests with one ore more cuts | |
2804 | * in the middle, this is the number of RDMAs starting | |
2805 | * after the last cut in the request. All previous | |
2806 | * segments before the last cut implicitly have 1 RDMA. | |
2807 | * | |
2808 | * Since the number of RDMAs is not known beforehand, | |
2809 | * it must be filled-in retroactively - after each | |
2810 | * segmentation cut or at the end of the entire packet. | |
2811 | */ | |
2812 | ||
2813 | while (1) { | |
2814 | /* Break the SKB or Fragment up into pieces which | |
b53bef84 | 2815 | * do not cross mgp->tx_boundary */ |
0da34b6d BG |
2816 | low = MYRI10GE_LOWPART_TO_U32(bus); |
2817 | high_swapped = htonl(MYRI10GE_HIGHPART_TO_U32(bus)); | |
2818 | while (len) { | |
2819 | u8 flags_next; | |
2820 | int cum_len_next; | |
2821 | ||
2822 | if (unlikely(count == max_segments)) | |
2823 | goto abort_linearize; | |
2824 | ||
b53bef84 BG |
2825 | boundary = |
2826 | (low + mgp->tx_boundary) & ~(mgp->tx_boundary - 1); | |
0da34b6d BG |
2827 | seglen = boundary - low; |
2828 | if (seglen > len) | |
2829 | seglen = len; | |
2830 | flags_next = flags & ~MXGEFW_FLAGS_FIRST; | |
2831 | cum_len_next = cum_len + seglen; | |
0da34b6d BG |
2832 | if (mss) { /* TSO */ |
2833 | (req - rdma_count)->rdma_count = rdma_count + 1; | |
2834 | ||
2835 | if (likely(cum_len >= 0)) { /* payload */ | |
2836 | int next_is_first, chop; | |
2837 | ||
2838 | chop = (cum_len_next > mss); | |
2839 | cum_len_next = cum_len_next % mss; | |
2840 | next_is_first = (cum_len_next == 0); | |
2841 | flags |= chop * MXGEFW_FLAGS_TSO_CHOP; | |
2842 | flags_next |= next_is_first * | |
2843 | MXGEFW_FLAGS_FIRST; | |
2844 | rdma_count |= -(chop | next_is_first); | |
2845 | rdma_count += chop & !next_is_first; | |
2846 | } else if (likely(cum_len_next >= 0)) { /* header ends */ | |
2847 | int small; | |
2848 | ||
2849 | rdma_count = -1; | |
2850 | cum_len_next = 0; | |
2851 | seglen = -cum_len; | |
2852 | small = (mss <= MXGEFW_SEND_SMALL_SIZE); | |
2853 | flags_next = MXGEFW_FLAGS_TSO_PLD | | |
2854 | MXGEFW_FLAGS_FIRST | | |
2855 | (small * MXGEFW_FLAGS_SMALL); | |
2856 | } | |
2857 | } | |
0da34b6d BG |
2858 | req->addr_high = high_swapped; |
2859 | req->addr_low = htonl(low); | |
40f6cff5 | 2860 | req->pseudo_hdr_offset = htons(pseudo_hdr_offset); |
0da34b6d BG |
2861 | req->pad = 0; /* complete solid 16-byte block; does this matter? */ |
2862 | req->rdma_count = 1; | |
2863 | req->length = htons(seglen); | |
2864 | req->cksum_offset = cksum_offset; | |
2865 | req->flags = flags | ((cum_len & 1) * odd_flag); | |
2866 | ||
2867 | low += seglen; | |
2868 | len -= seglen; | |
2869 | cum_len = cum_len_next; | |
2870 | flags = flags_next; | |
2871 | req++; | |
2872 | count++; | |
2873 | rdma_count++; | |
4f93fde0 BG |
2874 | if (cksum_offset != 0 && !(mss && skb_is_gso_v6(skb))) { |
2875 | if (unlikely(cksum_offset > seglen)) | |
2876 | cksum_offset -= seglen; | |
2877 | else | |
2878 | cksum_offset = 0; | |
2879 | } | |
0da34b6d BG |
2880 | } |
2881 | if (frag_idx == frag_cnt) | |
2882 | break; | |
2883 | ||
2884 | /* map next fragment for DMA */ | |
2885 | idx = (count + tx->req) & tx->mask; | |
2886 | frag = &skb_shinfo(skb)->frags[frag_idx]; | |
2887 | frag_idx++; | |
2888 | len = frag->size; | |
2889 | bus = pci_map_page(mgp->pdev, frag->page, frag->page_offset, | |
2890 | len, PCI_DMA_TODEVICE); | |
2891 | pci_unmap_addr_set(&tx->info[idx], bus, bus); | |
2892 | pci_unmap_len_set(&tx->info[idx], len, len); | |
2893 | } | |
2894 | ||
2895 | (req - rdma_count)->rdma_count = rdma_count; | |
0da34b6d BG |
2896 | if (mss) |
2897 | do { | |
2898 | req--; | |
2899 | req->flags |= MXGEFW_FLAGS_TSO_LAST; | |
2900 | } while (!(req->flags & (MXGEFW_FLAGS_TSO_CHOP | | |
2901 | MXGEFW_FLAGS_FIRST))); | |
0da34b6d BG |
2902 | idx = ((count - 1) + tx->req) & tx->mask; |
2903 | tx->info[idx].last = 1; | |
e454e7e2 | 2904 | myri10ge_submit_req(tx, tx->req_list, count); |
236bb5e6 BG |
2905 | /* if using multiple tx queues, make sure NIC polls the |
2906 | * current slice */ | |
2907 | if ((mgp->dev->real_num_tx_queues > 1) && tx->queue_active == 0) { | |
2908 | tx->queue_active = 1; | |
2909 | put_be32(htonl(1), tx->send_go); | |
8c2f5fa5 | 2910 | mb(); |
6824a105 | 2911 | mmiowb(); |
236bb5e6 | 2912 | } |
0da34b6d BG |
2913 | tx->pkt_start++; |
2914 | if ((avail - count) < MXGEFW_MAX_SEND_DESC) { | |
b53bef84 | 2915 | tx->stop_queue++; |
236bb5e6 | 2916 | netif_tx_stop_queue(netdev_queue); |
0da34b6d | 2917 | } |
6ed10654 | 2918 | return NETDEV_TX_OK; |
0da34b6d BG |
2919 | |
2920 | abort_linearize: | |
2921 | /* Free any DMA resources we've alloced and clear out the skb | |
2922 | * slot so as to not trip up assertions, and to avoid a | |
2923 | * double-free if linearizing fails */ | |
2924 | ||
2925 | last_idx = (idx + 1) & tx->mask; | |
2926 | idx = tx->req & tx->mask; | |
2927 | tx->info[idx].skb = NULL; | |
2928 | do { | |
2929 | len = pci_unmap_len(&tx->info[idx], len); | |
2930 | if (len) { | |
2931 | if (tx->info[idx].skb != NULL) | |
2932 | pci_unmap_single(mgp->pdev, | |
2933 | pci_unmap_addr(&tx->info[idx], | |
2934 | bus), len, | |
2935 | PCI_DMA_TODEVICE); | |
2936 | else | |
2937 | pci_unmap_page(mgp->pdev, | |
2938 | pci_unmap_addr(&tx->info[idx], | |
2939 | bus), len, | |
2940 | PCI_DMA_TODEVICE); | |
2941 | pci_unmap_len_set(&tx->info[idx], len, 0); | |
2942 | tx->info[idx].skb = NULL; | |
2943 | } | |
2944 | idx = (idx + 1) & tx->mask; | |
2945 | } while (idx != last_idx); | |
89114afd | 2946 | if (skb_is_gso(skb)) { |
0da34b6d BG |
2947 | printk(KERN_ERR |
2948 | "myri10ge: %s: TSO but wanted to linearize?!?!?\n", | |
2949 | mgp->dev->name); | |
2950 | goto drop; | |
2951 | } | |
2952 | ||
bec0e859 | 2953 | if (skb_linearize(skb)) |
0da34b6d BG |
2954 | goto drop; |
2955 | ||
b53bef84 | 2956 | tx->linearized++; |
0da34b6d BG |
2957 | goto again; |
2958 | ||
2959 | drop: | |
2960 | dev_kfree_skb_any(skb); | |
b53bef84 | 2961 | ss->stats.tx_dropped += 1; |
6ed10654 | 2962 | return NETDEV_TX_OK; |
0da34b6d BG |
2963 | |
2964 | } | |
2965 | ||
61357325 SH |
2966 | static netdev_tx_t myri10ge_sw_tso(struct sk_buff *skb, |
2967 | struct net_device *dev) | |
4f93fde0 BG |
2968 | { |
2969 | struct sk_buff *segs, *curr; | |
b53bef84 | 2970 | struct myri10ge_priv *mgp = netdev_priv(dev); |
d6279c88 | 2971 | struct myri10ge_slice_state *ss; |
61357325 | 2972 | netdev_tx_t status; |
4f93fde0 BG |
2973 | |
2974 | segs = skb_gso_segment(skb, dev->features & ~NETIF_F_TSO6); | |
801678c5 | 2975 | if (IS_ERR(segs)) |
4f93fde0 BG |
2976 | goto drop; |
2977 | ||
2978 | while (segs) { | |
2979 | curr = segs; | |
2980 | segs = segs->next; | |
2981 | curr->next = NULL; | |
2982 | status = myri10ge_xmit(curr, dev); | |
2983 | if (status != 0) { | |
2984 | dev_kfree_skb_any(curr); | |
2985 | if (segs != NULL) { | |
2986 | curr = segs; | |
2987 | segs = segs->next; | |
2988 | curr->next = NULL; | |
2989 | dev_kfree_skb_any(segs); | |
2990 | } | |
2991 | goto drop; | |
2992 | } | |
2993 | } | |
2994 | dev_kfree_skb_any(skb); | |
ec634fe3 | 2995 | return NETDEV_TX_OK; |
4f93fde0 BG |
2996 | |
2997 | drop: | |
d6279c88 | 2998 | ss = &mgp->ss[skb_get_queue_mapping(skb)]; |
4f93fde0 | 2999 | dev_kfree_skb_any(skb); |
d6279c88 | 3000 | ss->stats.tx_dropped += 1; |
ec634fe3 | 3001 | return NETDEV_TX_OK; |
4f93fde0 BG |
3002 | } |
3003 | ||
0da34b6d BG |
3004 | static struct net_device_stats *myri10ge_get_stats(struct net_device *dev) |
3005 | { | |
3006 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
0dcffac1 | 3007 | struct myri10ge_slice_netstats *slice_stats; |
6dc34941 | 3008 | struct net_device_stats *stats = &dev->stats; |
0dcffac1 BG |
3009 | int i; |
3010 | ||
59081825 | 3011 | spin_lock(&mgp->stats_lock); |
0dcffac1 BG |
3012 | memset(stats, 0, sizeof(*stats)); |
3013 | for (i = 0; i < mgp->num_slices; i++) { | |
3014 | slice_stats = &mgp->ss[i].stats; | |
3015 | stats->rx_packets += slice_stats->rx_packets; | |
3016 | stats->tx_packets += slice_stats->tx_packets; | |
3017 | stats->rx_bytes += slice_stats->rx_bytes; | |
3018 | stats->tx_bytes += slice_stats->tx_bytes; | |
3019 | stats->rx_dropped += slice_stats->rx_dropped; | |
3020 | stats->tx_dropped += slice_stats->tx_dropped; | |
3021 | } | |
59081825 | 3022 | spin_unlock(&mgp->stats_lock); |
0dcffac1 | 3023 | return stats; |
0da34b6d BG |
3024 | } |
3025 | ||
3026 | static void myri10ge_set_multicast_list(struct net_device *dev) | |
3027 | { | |
b53bef84 | 3028 | struct myri10ge_priv *mgp = netdev_priv(dev); |
85a7ea1b | 3029 | struct myri10ge_cmd cmd; |
85a7ea1b | 3030 | struct dev_mc_list *mc_list; |
6250223e | 3031 | __be32 data[2] = { 0, 0 }; |
85a7ea1b BG |
3032 | int err; |
3033 | ||
0da34b6d BG |
3034 | /* can be called from atomic contexts, |
3035 | * pass 1 to force atomicity in myri10ge_send_cmd() */ | |
85a7ea1b BG |
3036 | myri10ge_change_promisc(mgp, dev->flags & IFF_PROMISC, 1); |
3037 | ||
3038 | /* This firmware is known to not support multicast */ | |
2f76216f | 3039 | if (!mgp->fw_multicast_support) |
85a7ea1b BG |
3040 | return; |
3041 | ||
3042 | /* Disable multicast filtering */ | |
3043 | ||
3044 | err = myri10ge_send_cmd(mgp, MXGEFW_ENABLE_ALLMULTI, &cmd, 1); | |
3045 | if (err != 0) { | |
3046 | printk(KERN_ERR "myri10ge: %s: Failed MXGEFW_ENABLE_ALLMULTI," | |
3047 | " error status: %d\n", dev->name, err); | |
3048 | goto abort; | |
3049 | } | |
3050 | ||
2f76216f | 3051 | if ((dev->flags & IFF_ALLMULTI) || mgp->adopted_rx_filter_bug) { |
85a7ea1b BG |
3052 | /* request to disable multicast filtering, so quit here */ |
3053 | return; | |
3054 | } | |
3055 | ||
3056 | /* Flush the filters */ | |
3057 | ||
3058 | err = myri10ge_send_cmd(mgp, MXGEFW_LEAVE_ALL_MULTICAST_GROUPS, | |
3059 | &cmd, 1); | |
3060 | if (err != 0) { | |
3061 | printk(KERN_ERR | |
3062 | "myri10ge: %s: Failed MXGEFW_LEAVE_ALL_MULTICAST_GROUPS" | |
3063 | ", error status: %d\n", dev->name, err); | |
3064 | goto abort; | |
3065 | } | |
3066 | ||
3067 | /* Walk the multicast list, and add each address */ | |
3068 | for (mc_list = dev->mc_list; mc_list != NULL; mc_list = mc_list->next) { | |
40f6cff5 AV |
3069 | memcpy(data, &mc_list->dmi_addr, 6); |
3070 | cmd.data0 = ntohl(data[0]); | |
3071 | cmd.data1 = ntohl(data[1]); | |
85a7ea1b BG |
3072 | err = myri10ge_send_cmd(mgp, MXGEFW_JOIN_MULTICAST_GROUP, |
3073 | &cmd, 1); | |
3074 | ||
3075 | if (err != 0) { | |
3076 | printk(KERN_ERR "myri10ge: %s: Failed " | |
3077 | "MXGEFW_JOIN_MULTICAST_GROUP, error status:" | |
3078 | "%d\t", dev->name, err); | |
e174961c | 3079 | printk(KERN_ERR "MAC %pM\n", mc_list->dmi_addr); |
85a7ea1b BG |
3080 | goto abort; |
3081 | } | |
3082 | } | |
3083 | /* Enable multicast filtering */ | |
3084 | err = myri10ge_send_cmd(mgp, MXGEFW_DISABLE_ALLMULTI, &cmd, 1); | |
3085 | if (err != 0) { | |
3086 | printk(KERN_ERR "myri10ge: %s: Failed MXGEFW_DISABLE_ALLMULTI," | |
3087 | "error status: %d\n", dev->name, err); | |
3088 | goto abort; | |
3089 | } | |
3090 | ||
3091 | return; | |
3092 | ||
3093 | abort: | |
3094 | return; | |
0da34b6d BG |
3095 | } |
3096 | ||
3097 | static int myri10ge_set_mac_address(struct net_device *dev, void *addr) | |
3098 | { | |
3099 | struct sockaddr *sa = addr; | |
3100 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
3101 | int status; | |
3102 | ||
3103 | if (!is_valid_ether_addr(sa->sa_data)) | |
3104 | return -EADDRNOTAVAIL; | |
3105 | ||
3106 | status = myri10ge_update_mac_address(mgp, sa->sa_data); | |
3107 | if (status != 0) { | |
3108 | printk(KERN_ERR | |
3109 | "myri10ge: %s: changing mac address failed with %d\n", | |
3110 | dev->name, status); | |
3111 | return status; | |
3112 | } | |
3113 | ||
3114 | /* change the dev structure */ | |
3115 | memcpy(dev->dev_addr, sa->sa_data, 6); | |
3116 | return 0; | |
3117 | } | |
3118 | ||
3119 | static int myri10ge_change_mtu(struct net_device *dev, int new_mtu) | |
3120 | { | |
3121 | struct myri10ge_priv *mgp = netdev_priv(dev); | |
3122 | int error = 0; | |
3123 | ||
3124 | if ((new_mtu < 68) || (ETH_HLEN + new_mtu > MYRI10GE_MAX_ETHER_MTU)) { | |
3125 | printk(KERN_ERR "myri10ge: %s: new mtu (%d) is not valid\n", | |
3126 | dev->name, new_mtu); | |
3127 | return -EINVAL; | |
3128 | } | |
3129 | printk(KERN_INFO "%s: changing mtu from %d to %d\n", | |
3130 | dev->name, dev->mtu, new_mtu); | |
3131 | if (mgp->running) { | |
3132 | /* if we change the mtu on an active device, we must | |
3133 | * reset the device so the firmware sees the change */ | |
3134 | myri10ge_close(dev); | |
3135 | dev->mtu = new_mtu; | |
3136 | myri10ge_open(dev); | |
3137 | } else | |
3138 | dev->mtu = new_mtu; | |
3139 | ||
3140 | return error; | |
3141 | } | |
3142 | ||
3143 | /* | |
3144 | * Enable ECRC to align PCI-E Completion packets on an 8-byte boundary. | |
3145 | * Only do it if the bridge is a root port since we don't want to disturb | |
3146 | * any other device, except if forced with myri10ge_ecrc_enable > 1. | |
3147 | */ | |
3148 | ||
0da34b6d BG |
3149 | static void myri10ge_enable_ecrc(struct myri10ge_priv *mgp) |
3150 | { | |
3151 | struct pci_dev *bridge = mgp->pdev->bus->self; | |
3152 | struct device *dev = &mgp->pdev->dev; | |
3153 | unsigned cap; | |
3154 | unsigned err_cap; | |
3155 | u16 val; | |
3156 | u8 ext_type; | |
3157 | int ret; | |
3158 | ||
3159 | if (!myri10ge_ecrc_enable || !bridge) | |
3160 | return; | |
3161 | ||
3162 | /* check that the bridge is a root port */ | |
3163 | cap = pci_find_capability(bridge, PCI_CAP_ID_EXP); | |
3164 | pci_read_config_word(bridge, cap + PCI_CAP_FLAGS, &val); | |
3165 | ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4; | |
3166 | if (ext_type != PCI_EXP_TYPE_ROOT_PORT) { | |
3167 | if (myri10ge_ecrc_enable > 1) { | |
eca3fd83 | 3168 | struct pci_dev *prev_bridge, *old_bridge = bridge; |
0da34b6d BG |
3169 | |
3170 | /* Walk the hierarchy up to the root port | |
3171 | * where ECRC has to be enabled */ | |
3172 | do { | |
eca3fd83 | 3173 | prev_bridge = bridge; |
0da34b6d | 3174 | bridge = bridge->bus->self; |
eca3fd83 | 3175 | if (!bridge || prev_bridge == bridge) { |
0da34b6d BG |
3176 | dev_err(dev, |
3177 | "Failed to find root port" | |
3178 | " to force ECRC\n"); | |
3179 | return; | |
3180 | } | |
3181 | cap = | |
3182 | pci_find_capability(bridge, PCI_CAP_ID_EXP); | |
3183 | pci_read_config_word(bridge, | |
3184 | cap + PCI_CAP_FLAGS, &val); | |
3185 | ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4; | |
3186 | } while (ext_type != PCI_EXP_TYPE_ROOT_PORT); | |
3187 | ||
3188 | dev_info(dev, | |
3189 | "Forcing ECRC on non-root port %s" | |
3190 | " (enabling on root port %s)\n", | |
3191 | pci_name(old_bridge), pci_name(bridge)); | |
3192 | } else { | |
3193 | dev_err(dev, | |
3194 | "Not enabling ECRC on non-root port %s\n", | |
3195 | pci_name(bridge)); | |
3196 | return; | |
3197 | } | |
3198 | } | |
3199 | ||
3200 | cap = pci_find_ext_capability(bridge, PCI_EXT_CAP_ID_ERR); | |
0da34b6d BG |
3201 | if (!cap) |
3202 | return; | |
3203 | ||
3204 | ret = pci_read_config_dword(bridge, cap + PCI_ERR_CAP, &err_cap); | |
3205 | if (ret) { | |
3206 | dev_err(dev, "failed reading ext-conf-space of %s\n", | |
3207 | pci_name(bridge)); | |
3208 | dev_err(dev, "\t pci=nommconf in use? " | |
3209 | "or buggy/incomplete/absent ACPI MCFG attr?\n"); | |
3210 | return; | |
3211 | } | |
3212 | if (!(err_cap & PCI_ERR_CAP_ECRC_GENC)) | |
3213 | return; | |
3214 | ||
3215 | err_cap |= PCI_ERR_CAP_ECRC_GENE; | |
3216 | pci_write_config_dword(bridge, cap + PCI_ERR_CAP, err_cap); | |
3217 | dev_info(dev, "Enabled ECRC on upstream bridge %s\n", pci_name(bridge)); | |
0da34b6d BG |
3218 | } |
3219 | ||
3220 | /* | |
3221 | * The Lanai Z8E PCI-E interface achieves higher Read-DMA throughput | |
3222 | * when the PCI-E Completion packets are aligned on an 8-byte | |
3223 | * boundary. Some PCI-E chip sets always align Completion packets; on | |
3224 | * the ones that do not, the alignment can be enforced by enabling | |
3225 | * ECRC generation (if supported). | |
3226 | * | |
3227 | * When PCI-E Completion packets are not aligned, it is actually more | |
3228 | * efficient to limit Read-DMA transactions to 2KB, rather than 4KB. | |
3229 | * | |
3230 | * If the driver can neither enable ECRC nor verify that it has | |
3231 | * already been enabled, then it must use a firmware image which works | |
0dcffac1 | 3232 | * around unaligned completion packets (myri10ge_rss_ethp_z8e.dat), and it |
0da34b6d | 3233 | * should also ensure that it never gives the device a Read-DMA which is |
b53bef84 | 3234 | * larger than 2KB by setting the tx_boundary to 2KB. If ECRC is |
0dcffac1 | 3235 | * enabled, then the driver should use the aligned (myri10ge_rss_eth_z8e.dat) |
b53bef84 | 3236 | * firmware image, and set tx_boundary to 4KB. |
0da34b6d BG |
3237 | */ |
3238 | ||
5443e9ea | 3239 | static void myri10ge_firmware_probe(struct myri10ge_priv *mgp) |
0da34b6d | 3240 | { |
5443e9ea BG |
3241 | struct pci_dev *pdev = mgp->pdev; |
3242 | struct device *dev = &pdev->dev; | |
302d242c | 3243 | int status; |
0da34b6d | 3244 | |
b53bef84 | 3245 | mgp->tx_boundary = 4096; |
5443e9ea BG |
3246 | /* |
3247 | * Verify the max read request size was set to 4KB | |
3248 | * before trying the test with 4KB. | |
3249 | */ | |
302d242c BG |
3250 | status = pcie_get_readrq(pdev); |
3251 | if (status < 0) { | |
5443e9ea BG |
3252 | dev_err(dev, "Couldn't read max read req size: %d\n", status); |
3253 | goto abort; | |
3254 | } | |
302d242c BG |
3255 | if (status != 4096) { |
3256 | dev_warn(dev, "Max Read Request size != 4096 (%d)\n", status); | |
b53bef84 | 3257 | mgp->tx_boundary = 2048; |
5443e9ea BG |
3258 | } |
3259 | /* | |
3260 | * load the optimized firmware (which assumes aligned PCIe | |
3261 | * completions) in order to see if it works on this host. | |
3262 | */ | |
3263 | mgp->fw_name = myri10ge_fw_aligned; | |
0dcffac1 | 3264 | status = myri10ge_load_firmware(mgp, 1); |
5443e9ea BG |
3265 | if (status != 0) { |
3266 | goto abort; | |
3267 | } | |
3268 | ||
3269 | /* | |
3270 | * Enable ECRC if possible | |
3271 | */ | |
3272 | myri10ge_enable_ecrc(mgp); | |
3273 | ||
3274 | /* | |
3275 | * Run a DMA test which watches for unaligned completions and | |
3276 | * aborts on the first one seen. | |
3277 | */ | |
3278 | ||
3279 | status = myri10ge_dma_test(mgp, MXGEFW_CMD_UNALIGNED_TEST); | |
3280 | if (status == 0) | |
3281 | return; /* keep the aligned firmware */ | |
3282 | ||
3283 | if (status != -E2BIG) | |
3284 | dev_warn(dev, "DMA test failed: %d\n", status); | |
3285 | if (status == -ENOSYS) | |
3286 | dev_warn(dev, "Falling back to ethp! " | |
3287 | "Please install up to date fw\n"); | |
3288 | abort: | |
3289 | /* fall back to using the unaligned firmware */ | |
b53bef84 | 3290 | mgp->tx_boundary = 2048; |
0da34b6d BG |
3291 | mgp->fw_name = myri10ge_fw_unaligned; |
3292 | ||
5443e9ea BG |
3293 | } |
3294 | ||
3295 | static void myri10ge_select_firmware(struct myri10ge_priv *mgp) | |
3296 | { | |
2d90b0aa BG |
3297 | int overridden = 0; |
3298 | ||
0da34b6d | 3299 | if (myri10ge_force_firmware == 0) { |
ce7f9368 BG |
3300 | int link_width, exp_cap; |
3301 | u16 lnk; | |
3302 | ||
3303 | exp_cap = pci_find_capability(mgp->pdev, PCI_CAP_ID_EXP); | |
3304 | pci_read_config_word(mgp->pdev, exp_cap + PCI_EXP_LNKSTA, &lnk); | |
3305 | link_width = (lnk >> 4) & 0x3f; | |
3306 | ||
ce7f9368 BG |
3307 | /* Check to see if Link is less than 8 or if the |
3308 | * upstream bridge is known to provide aligned | |
3309 | * completions */ | |
3310 | if (link_width < 8) { | |
3311 | dev_info(&mgp->pdev->dev, "PCIE x%d Link\n", | |
3312 | link_width); | |
b53bef84 | 3313 | mgp->tx_boundary = 4096; |
ce7f9368 | 3314 | mgp->fw_name = myri10ge_fw_aligned; |
5443e9ea BG |
3315 | } else { |
3316 | myri10ge_firmware_probe(mgp); | |
0da34b6d BG |
3317 | } |
3318 | } else { | |
3319 | if (myri10ge_force_firmware == 1) { | |
3320 | dev_info(&mgp->pdev->dev, | |
3321 | "Assuming aligned completions (forced)\n"); | |
b53bef84 | 3322 | mgp->tx_boundary = 4096; |
0da34b6d BG |
3323 | mgp->fw_name = myri10ge_fw_aligned; |
3324 | } else { | |
3325 | dev_info(&mgp->pdev->dev, | |
3326 | "Assuming unaligned completions (forced)\n"); | |
b53bef84 | 3327 | mgp->tx_boundary = 2048; |
0da34b6d BG |
3328 | mgp->fw_name = myri10ge_fw_unaligned; |
3329 | } | |
3330 | } | |
3331 | if (myri10ge_fw_name != NULL) { | |
2d90b0aa | 3332 | overridden = 1; |
0da34b6d BG |
3333 | mgp->fw_name = myri10ge_fw_name; |
3334 | } | |
2d90b0aa BG |
3335 | if (mgp->board_number < MYRI10GE_MAX_BOARDS && |
3336 | myri10ge_fw_names[mgp->board_number] != NULL && | |
3337 | strlen(myri10ge_fw_names[mgp->board_number])) { | |
3338 | mgp->fw_name = myri10ge_fw_names[mgp->board_number]; | |
3339 | overridden = 1; | |
3340 | } | |
3341 | if (overridden) | |
3342 | dev_info(&mgp->pdev->dev, "overriding firmware to %s\n", | |
3343 | mgp->fw_name); | |
0da34b6d BG |
3344 | } |
3345 | ||
0da34b6d | 3346 | #ifdef CONFIG_PM |
0da34b6d BG |
3347 | static int myri10ge_suspend(struct pci_dev *pdev, pm_message_t state) |
3348 | { | |
3349 | struct myri10ge_priv *mgp; | |
3350 | struct net_device *netdev; | |
3351 | ||
3352 | mgp = pci_get_drvdata(pdev); | |
3353 | if (mgp == NULL) | |
3354 | return -EINVAL; | |
3355 | netdev = mgp->dev; | |
3356 | ||
3357 | netif_device_detach(netdev); | |
3358 | if (netif_running(netdev)) { | |
3359 | printk(KERN_INFO "myri10ge: closing %s\n", netdev->name); | |
3360 | rtnl_lock(); | |
3361 | myri10ge_close(netdev); | |
3362 | rtnl_unlock(); | |
3363 | } | |
3364 | myri10ge_dummy_rdma(mgp, 0); | |
83f6e152 | 3365 | pci_save_state(pdev); |
0da34b6d | 3366 | pci_disable_device(pdev); |
1a63e846 BG |
3367 | |
3368 | return pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
0da34b6d BG |
3369 | } |
3370 | ||
3371 | static int myri10ge_resume(struct pci_dev *pdev) | |
3372 | { | |
3373 | struct myri10ge_priv *mgp; | |
3374 | struct net_device *netdev; | |
3375 | int status; | |
3376 | u16 vendor; | |
3377 | ||
3378 | mgp = pci_get_drvdata(pdev); | |
3379 | if (mgp == NULL) | |
3380 | return -EINVAL; | |
3381 | netdev = mgp->dev; | |
3382 | pci_set_power_state(pdev, 0); /* zeros conf space as a side effect */ | |
3383 | msleep(5); /* give card time to respond */ | |
3384 | pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor); | |
3385 | if (vendor == 0xffff) { | |
3386 | printk(KERN_ERR "myri10ge: %s: device disappeared!\n", | |
3387 | mgp->dev->name); | |
3388 | return -EIO; | |
3389 | } | |
83f6e152 | 3390 | |
1a63e846 BG |
3391 | status = pci_restore_state(pdev); |
3392 | if (status) | |
3393 | return status; | |
4c2248cc BG |
3394 | |
3395 | status = pci_enable_device(pdev); | |
1a63e846 | 3396 | if (status) { |
4c2248cc | 3397 | dev_err(&pdev->dev, "failed to enable device\n"); |
1a63e846 | 3398 | return status; |
4c2248cc BG |
3399 | } |
3400 | ||
0da34b6d BG |
3401 | pci_set_master(pdev); |
3402 | ||
0da34b6d | 3403 | myri10ge_reset(mgp); |
013b68bf | 3404 | myri10ge_dummy_rdma(mgp, 1); |
0da34b6d BG |
3405 | |
3406 | /* Save configuration space to be restored if the | |
3407 | * nic resets due to a parity error */ | |
83f6e152 | 3408 | pci_save_state(pdev); |
0da34b6d BG |
3409 | |
3410 | if (netif_running(netdev)) { | |
3411 | rtnl_lock(); | |
df30a740 | 3412 | status = myri10ge_open(netdev); |
0da34b6d | 3413 | rtnl_unlock(); |
df30a740 BG |
3414 | if (status != 0) |
3415 | goto abort_with_enabled; | |
3416 | ||
0da34b6d BG |
3417 | } |
3418 | netif_device_attach(netdev); | |
3419 | ||
3420 | return 0; | |
3421 | ||
4c2248cc BG |
3422 | abort_with_enabled: |
3423 | pci_disable_device(pdev); | |
0da34b6d BG |
3424 | return -EIO; |
3425 | ||
3426 | } | |
0da34b6d BG |
3427 | #endif /* CONFIG_PM */ |
3428 | ||
3429 | static u32 myri10ge_read_reboot(struct myri10ge_priv *mgp) | |
3430 | { | |
3431 | struct pci_dev *pdev = mgp->pdev; | |
3432 | int vs = mgp->vendor_specific_offset; | |
3433 | u32 reboot; | |
3434 | ||
3435 | /*enter read32 mode */ | |
3436 | pci_write_config_byte(pdev, vs + 0x10, 0x3); | |
3437 | ||
3438 | /*read REBOOT_STATUS (0xfffffff0) */ | |
3439 | pci_write_config_dword(pdev, vs + 0x18, 0xfffffff0); | |
3440 | pci_read_config_dword(pdev, vs + 0x14, &reboot); | |
3441 | return reboot; | |
3442 | } | |
3443 | ||
3444 | /* | |
3445 | * This watchdog is used to check whether the board has suffered | |
3446 | * from a parity error and needs to be recovered. | |
3447 | */ | |
c4028958 | 3448 | static void myri10ge_watchdog(struct work_struct *work) |
0da34b6d | 3449 | { |
c4028958 | 3450 | struct myri10ge_priv *mgp = |
6250223e | 3451 | container_of(work, struct myri10ge_priv, watchdog_work); |
b53bef84 | 3452 | struct myri10ge_tx_buf *tx; |
0da34b6d | 3453 | u32 reboot; |
d0234215 | 3454 | int status, rebooted; |
0dcffac1 | 3455 | int i; |
0da34b6d BG |
3456 | u16 cmd, vendor; |
3457 | ||
3458 | mgp->watchdog_resets++; | |
3459 | pci_read_config_word(mgp->pdev, PCI_COMMAND, &cmd); | |
d0234215 | 3460 | rebooted = 0; |
0da34b6d BG |
3461 | if ((cmd & PCI_COMMAND_MASTER) == 0) { |
3462 | /* Bus master DMA disabled? Check to see | |
3463 | * if the card rebooted due to a parity error | |
3464 | * For now, just report it */ | |
3465 | reboot = myri10ge_read_reboot(mgp); | |
3466 | printk(KERN_ERR | |
f181137f BG |
3467 | "myri10ge: %s: NIC rebooted (0x%x),%s resetting\n", |
3468 | mgp->dev->name, reboot, | |
3469 | myri10ge_reset_recover ? " " : " not"); | |
3470 | if (myri10ge_reset_recover == 0) | |
3471 | return; | |
d0234215 BG |
3472 | rtnl_lock(); |
3473 | mgp->rebooted = 1; | |
3474 | rebooted = 1; | |
3475 | myri10ge_close(mgp->dev); | |
f181137f | 3476 | myri10ge_reset_recover--; |
d0234215 | 3477 | mgp->rebooted = 0; |
0da34b6d BG |
3478 | /* |
3479 | * A rebooted nic will come back with config space as | |
3480 | * it was after power was applied to PCIe bus. | |
3481 | * Attempt to restore config space which was saved | |
3482 | * when the driver was loaded, or the last time the | |
3483 | * nic was resumed from power saving mode. | |
3484 | */ | |
83f6e152 | 3485 | pci_restore_state(mgp->pdev); |
7adda30c BG |
3486 | |
3487 | /* save state again for accounting reasons */ | |
83f6e152 | 3488 | pci_save_state(mgp->pdev); |
7adda30c | 3489 | |
0da34b6d BG |
3490 | } else { |
3491 | /* if we get back -1's from our slot, perhaps somebody | |
3492 | * powered off our card. Don't try to reset it in | |
3493 | * this case */ | |
3494 | if (cmd == 0xffff) { | |
3495 | pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor); | |
3496 | if (vendor == 0xffff) { | |
3497 | printk(KERN_ERR | |
3498 | "myri10ge: %s: device disappeared!\n", | |
3499 | mgp->dev->name); | |
3500 | return; | |
3501 | } | |
3502 | } | |
3503 | /* Perhaps it is a software error. Try to reset */ | |
3504 | ||
3505 | printk(KERN_ERR "myri10ge: %s: device timeout, resetting\n", | |
3506 | mgp->dev->name); | |
0dcffac1 BG |
3507 | for (i = 0; i < mgp->num_slices; i++) { |
3508 | tx = &mgp->ss[i].tx; | |
3509 | printk(KERN_INFO | |
236bb5e6 BG |
3510 | "myri10ge: %s: (%d): %d %d %d %d %d %d\n", |
3511 | mgp->dev->name, i, tx->queue_active, tx->req, | |
3512 | tx->done, tx->pkt_start, tx->pkt_done, | |
0dcffac1 BG |
3513 | (int)ntohl(mgp->ss[i].fw_stats-> |
3514 | send_done_count)); | |
3515 | msleep(2000); | |
3516 | printk(KERN_INFO | |
236bb5e6 BG |
3517 | "myri10ge: %s: (%d): %d %d %d %d %d %d\n", |
3518 | mgp->dev->name, i, tx->queue_active, tx->req, | |
3519 | tx->done, tx->pkt_start, tx->pkt_done, | |
0dcffac1 BG |
3520 | (int)ntohl(mgp->ss[i].fw_stats-> |
3521 | send_done_count)); | |
3522 | } | |
0da34b6d | 3523 | } |
236bb5e6 | 3524 | |
d0234215 BG |
3525 | if (!rebooted) { |
3526 | rtnl_lock(); | |
3527 | myri10ge_close(mgp->dev); | |
3528 | } | |
0dcffac1 | 3529 | status = myri10ge_load_firmware(mgp, 1); |
0da34b6d BG |
3530 | if (status != 0) |
3531 | printk(KERN_ERR "myri10ge: %s: failed to load firmware\n", | |
3532 | mgp->dev->name); | |
3533 | else | |
3534 | myri10ge_open(mgp->dev); | |
3535 | rtnl_unlock(); | |
3536 | } | |
3537 | ||
3538 | /* | |
3539 | * We use our own timer routine rather than relying upon | |
3540 | * netdev->tx_timeout because we have a very large hardware transmit | |
3541 | * queue. Due to the large queue, the netdev->tx_timeout function | |
3542 | * cannot detect a NIC with a parity error in a timely fashion if the | |
3543 | * NIC is lightly loaded. | |
3544 | */ | |
3545 | static void myri10ge_watchdog_timer(unsigned long arg) | |
3546 | { | |
3547 | struct myri10ge_priv *mgp; | |
b53bef84 | 3548 | struct myri10ge_slice_state *ss; |
d0234215 | 3549 | int i, reset_needed, busy_slice_cnt; |
626fda94 | 3550 | u32 rx_pause_cnt; |
d0234215 | 3551 | u16 cmd; |
0da34b6d BG |
3552 | |
3553 | mgp = (struct myri10ge_priv *)arg; | |
c7dab99b | 3554 | |
0dcffac1 | 3555 | rx_pause_cnt = ntohl(mgp->ss[0].fw_stats->dropped_pause); |
d0234215 | 3556 | busy_slice_cnt = 0; |
0dcffac1 BG |
3557 | for (i = 0, reset_needed = 0; |
3558 | i < mgp->num_slices && reset_needed == 0; ++i) { | |
b53bef84 | 3559 | |
0dcffac1 BG |
3560 | ss = &mgp->ss[i]; |
3561 | if (ss->rx_small.watchdog_needed) { | |
3562 | myri10ge_alloc_rx_pages(mgp, &ss->rx_small, | |
3563 | mgp->small_bytes + MXGEFW_PAD, | |
3564 | 1); | |
3565 | if (ss->rx_small.fill_cnt - ss->rx_small.cnt >= | |
3566 | myri10ge_fill_thresh) | |
3567 | ss->rx_small.watchdog_needed = 0; | |
3568 | } | |
3569 | if (ss->rx_big.watchdog_needed) { | |
3570 | myri10ge_alloc_rx_pages(mgp, &ss->rx_big, | |
3571 | mgp->big_bytes, 1); | |
3572 | if (ss->rx_big.fill_cnt - ss->rx_big.cnt >= | |
3573 | myri10ge_fill_thresh) | |
3574 | ss->rx_big.watchdog_needed = 0; | |
3575 | } | |
3576 | ||
3577 | if (ss->tx.req != ss->tx.done && | |
3578 | ss->tx.done == ss->watchdog_tx_done && | |
3579 | ss->watchdog_tx_req != ss->watchdog_tx_done) { | |
3580 | /* nic seems like it might be stuck.. */ | |
3581 | if (rx_pause_cnt != mgp->watchdog_pause) { | |
3582 | if (net_ratelimit()) | |
236bb5e6 BG |
3583 | printk(KERN_WARNING |
3584 | "myri10ge %s slice %d:" | |
0dcffac1 | 3585 | "TX paused, check link partner\n", |
236bb5e6 | 3586 | mgp->dev->name, i); |
0dcffac1 | 3587 | } else { |
236bb5e6 BG |
3588 | printk(KERN_WARNING |
3589 | "myri10ge %s slice %d stuck:", | |
3590 | mgp->dev->name, i); | |
0dcffac1 BG |
3591 | reset_needed = 1; |
3592 | } | |
626fda94 | 3593 | } |
d0234215 BG |
3594 | if (ss->watchdog_tx_done != ss->tx.done || |
3595 | ss->watchdog_rx_done != ss->rx_done.cnt) { | |
3596 | busy_slice_cnt++; | |
3597 | } | |
0dcffac1 BG |
3598 | ss->watchdog_tx_done = ss->tx.done; |
3599 | ss->watchdog_tx_req = ss->tx.req; | |
d0234215 BG |
3600 | ss->watchdog_rx_done = ss->rx_done.cnt; |
3601 | } | |
3602 | /* if we've sent or received no traffic, poll the NIC to | |
3603 | * ensure it is still there. Otherwise, we risk not noticing | |
3604 | * an error in a timely fashion */ | |
3605 | if (busy_slice_cnt == 0) { | |
3606 | pci_read_config_word(mgp->pdev, PCI_COMMAND, &cmd); | |
3607 | if ((cmd & PCI_COMMAND_MASTER) == 0) { | |
3608 | reset_needed = 1; | |
3609 | } | |
626fda94 | 3610 | } |
626fda94 | 3611 | mgp->watchdog_pause = rx_pause_cnt; |
0dcffac1 BG |
3612 | |
3613 | if (reset_needed) { | |
3614 | schedule_work(&mgp->watchdog_work); | |
3615 | } else { | |
3616 | /* rearm timer */ | |
3617 | mod_timer(&mgp->watchdog_timer, | |
3618 | jiffies + myri10ge_watchdog_timeout * HZ); | |
3619 | } | |
0da34b6d BG |
3620 | } |
3621 | ||
77929732 BG |
3622 | static void myri10ge_free_slices(struct myri10ge_priv *mgp) |
3623 | { | |
3624 | struct myri10ge_slice_state *ss; | |
3625 | struct pci_dev *pdev = mgp->pdev; | |
3626 | size_t bytes; | |
3627 | int i; | |
3628 | ||
3629 | if (mgp->ss == NULL) | |
3630 | return; | |
3631 | ||
3632 | for (i = 0; i < mgp->num_slices; i++) { | |
3633 | ss = &mgp->ss[i]; | |
3634 | if (ss->rx_done.entry != NULL) { | |
3635 | bytes = mgp->max_intr_slots * | |
3636 | sizeof(*ss->rx_done.entry); | |
3637 | dma_free_coherent(&pdev->dev, bytes, | |
3638 | ss->rx_done.entry, ss->rx_done.bus); | |
3639 | ss->rx_done.entry = NULL; | |
3640 | } | |
3641 | if (ss->fw_stats != NULL) { | |
3642 | bytes = sizeof(*ss->fw_stats); | |
3643 | dma_free_coherent(&pdev->dev, bytes, | |
3644 | ss->fw_stats, ss->fw_stats_bus); | |
3645 | ss->fw_stats = NULL; | |
3646 | } | |
3647 | } | |
3648 | kfree(mgp->ss); | |
3649 | mgp->ss = NULL; | |
3650 | } | |
3651 | ||
3652 | static int myri10ge_alloc_slices(struct myri10ge_priv *mgp) | |
3653 | { | |
3654 | struct myri10ge_slice_state *ss; | |
3655 | struct pci_dev *pdev = mgp->pdev; | |
3656 | size_t bytes; | |
3657 | int i; | |
3658 | ||
3659 | bytes = sizeof(*mgp->ss) * mgp->num_slices; | |
3660 | mgp->ss = kzalloc(bytes, GFP_KERNEL); | |
3661 | if (mgp->ss == NULL) { | |
3662 | return -ENOMEM; | |
3663 | } | |
3664 | ||
3665 | for (i = 0; i < mgp->num_slices; i++) { | |
3666 | ss = &mgp->ss[i]; | |
3667 | bytes = mgp->max_intr_slots * sizeof(*ss->rx_done.entry); | |
3668 | ss->rx_done.entry = dma_alloc_coherent(&pdev->dev, bytes, | |
3669 | &ss->rx_done.bus, | |
3670 | GFP_KERNEL); | |
3671 | if (ss->rx_done.entry == NULL) | |
3672 | goto abort; | |
3673 | memset(ss->rx_done.entry, 0, bytes); | |
3674 | bytes = sizeof(*ss->fw_stats); | |
3675 | ss->fw_stats = dma_alloc_coherent(&pdev->dev, bytes, | |
3676 | &ss->fw_stats_bus, | |
3677 | GFP_KERNEL); | |
3678 | if (ss->fw_stats == NULL) | |
3679 | goto abort; | |
3680 | ss->mgp = mgp; | |
3681 | ss->dev = mgp->dev; | |
3682 | netif_napi_add(ss->dev, &ss->napi, myri10ge_poll, | |
3683 | myri10ge_napi_weight); | |
3684 | } | |
3685 | return 0; | |
3686 | abort: | |
3687 | myri10ge_free_slices(mgp); | |
3688 | return -ENOMEM; | |
3689 | } | |
3690 | ||
3691 | /* | |
3692 | * This function determines the number of slices supported. | |
3693 | * The number slices is the minumum of the number of CPUS, | |
3694 | * the number of MSI-X irqs supported, the number of slices | |
3695 | * supported by the firmware | |
3696 | */ | |
3697 | static void myri10ge_probe_slices(struct myri10ge_priv *mgp) | |
3698 | { | |
3699 | struct myri10ge_cmd cmd; | |
3700 | struct pci_dev *pdev = mgp->pdev; | |
3701 | char *old_fw; | |
3702 | int i, status, ncpus, msix_cap; | |
3703 | ||
3704 | mgp->num_slices = 1; | |
3705 | msix_cap = pci_find_capability(pdev, PCI_CAP_ID_MSIX); | |
3706 | ncpus = num_online_cpus(); | |
3707 | ||
3708 | if (myri10ge_max_slices == 1 || msix_cap == 0 || | |
3709 | (myri10ge_max_slices == -1 && ncpus < 2)) | |
3710 | return; | |
3711 | ||
3712 | /* try to load the slice aware rss firmware */ | |
3713 | old_fw = mgp->fw_name; | |
13b2738c BG |
3714 | if (myri10ge_fw_name != NULL) { |
3715 | dev_info(&mgp->pdev->dev, "overriding rss firmware to %s\n", | |
3716 | myri10ge_fw_name); | |
3717 | mgp->fw_name = myri10ge_fw_name; | |
3718 | } else if (old_fw == myri10ge_fw_aligned) | |
77929732 BG |
3719 | mgp->fw_name = myri10ge_fw_rss_aligned; |
3720 | else | |
3721 | mgp->fw_name = myri10ge_fw_rss_unaligned; | |
3722 | status = myri10ge_load_firmware(mgp, 0); | |
3723 | if (status != 0) { | |
3724 | dev_info(&pdev->dev, "Rss firmware not found\n"); | |
3725 | return; | |
3726 | } | |
3727 | ||
3728 | /* hit the board with a reset to ensure it is alive */ | |
3729 | memset(&cmd, 0, sizeof(cmd)); | |
3730 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_RESET, &cmd, 0); | |
3731 | if (status != 0) { | |
3732 | dev_err(&mgp->pdev->dev, "failed reset\n"); | |
3733 | goto abort_with_fw; | |
3734 | return; | |
3735 | } | |
3736 | ||
3737 | mgp->max_intr_slots = cmd.data0 / sizeof(struct mcp_slot); | |
3738 | ||
3739 | /* tell it the size of the interrupt queues */ | |
3740 | cmd.data0 = mgp->max_intr_slots * sizeof(struct mcp_slot); | |
3741 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_SIZE, &cmd, 0); | |
3742 | if (status != 0) { | |
3743 | dev_err(&mgp->pdev->dev, "failed MXGEFW_CMD_SET_INTRQ_SIZE\n"); | |
3744 | goto abort_with_fw; | |
3745 | } | |
3746 | ||
3747 | /* ask the maximum number of slices it supports */ | |
3748 | status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_RSS_QUEUES, &cmd, 0); | |
3749 | if (status != 0) | |
3750 | goto abort_with_fw; | |
3751 | else | |
3752 | mgp->num_slices = cmd.data0; | |
3753 | ||
3754 | /* Only allow multiple slices if MSI-X is usable */ | |
3755 | if (!myri10ge_msi) { | |
3756 | goto abort_with_fw; | |
3757 | } | |
3758 | ||
3759 | /* if the admin did not specify a limit to how many | |
3760 | * slices we should use, cap it automatically to the | |
3761 | * number of CPUs currently online */ | |
3762 | if (myri10ge_max_slices == -1) | |
3763 | myri10ge_max_slices = ncpus; | |
3764 | ||
3765 | if (mgp->num_slices > myri10ge_max_slices) | |
3766 | mgp->num_slices = myri10ge_max_slices; | |
3767 | ||
3768 | /* Now try to allocate as many MSI-X vectors as we have | |
3769 | * slices. We give up on MSI-X if we can only get a single | |
3770 | * vector. */ | |
3771 | ||
3772 | mgp->msix_vectors = kzalloc(mgp->num_slices * | |
3773 | sizeof(*mgp->msix_vectors), GFP_KERNEL); | |
3774 | if (mgp->msix_vectors == NULL) | |
3775 | goto disable_msix; | |
3776 | for (i = 0; i < mgp->num_slices; i++) { | |
3777 | mgp->msix_vectors[i].entry = i; | |
3778 | } | |
3779 | ||
3780 | while (mgp->num_slices > 1) { | |
3781 | /* make sure it is a power of two */ | |
3782 | while (!is_power_of_2(mgp->num_slices)) | |
3783 | mgp->num_slices--; | |
3784 | if (mgp->num_slices == 1) | |
3785 | goto disable_msix; | |
3786 | status = pci_enable_msix(pdev, mgp->msix_vectors, | |
3787 | mgp->num_slices); | |
3788 | if (status == 0) { | |
3789 | pci_disable_msix(pdev); | |
3790 | return; | |
3791 | } | |
3792 | if (status > 0) | |
3793 | mgp->num_slices = status; | |
3794 | else | |
3795 | goto disable_msix; | |
3796 | } | |
3797 | ||
3798 | disable_msix: | |
3799 | if (mgp->msix_vectors != NULL) { | |
3800 | kfree(mgp->msix_vectors); | |
3801 | mgp->msix_vectors = NULL; | |
3802 | } | |
3803 | ||
3804 | abort_with_fw: | |
3805 | mgp->num_slices = 1; | |
3806 | mgp->fw_name = old_fw; | |
3807 | myri10ge_load_firmware(mgp, 0); | |
3808 | } | |
77929732 | 3809 | |
8126089f SH |
3810 | static const struct net_device_ops myri10ge_netdev_ops = { |
3811 | .ndo_open = myri10ge_open, | |
3812 | .ndo_stop = myri10ge_close, | |
3813 | .ndo_start_xmit = myri10ge_xmit, | |
3814 | .ndo_get_stats = myri10ge_get_stats, | |
3815 | .ndo_validate_addr = eth_validate_addr, | |
3816 | .ndo_change_mtu = myri10ge_change_mtu, | |
3817 | .ndo_set_multicast_list = myri10ge_set_multicast_list, | |
3818 | .ndo_set_mac_address = myri10ge_set_mac_address, | |
3819 | }; | |
3820 | ||
0da34b6d BG |
3821 | static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
3822 | { | |
3823 | struct net_device *netdev; | |
3824 | struct myri10ge_priv *mgp; | |
3825 | struct device *dev = &pdev->dev; | |
0da34b6d BG |
3826 | int i; |
3827 | int status = -ENXIO; | |
0da34b6d | 3828 | int dac_enabled; |
00b5e505 | 3829 | unsigned hdr_offset, ss_offset; |
2d90b0aa | 3830 | static int board_number; |
0da34b6d | 3831 | |
236bb5e6 | 3832 | netdev = alloc_etherdev_mq(sizeof(*mgp), MYRI10GE_MAX_SLICES); |
0da34b6d BG |
3833 | if (netdev == NULL) { |
3834 | dev_err(dev, "Could not allocate ethernet device\n"); | |
3835 | return -ENOMEM; | |
3836 | } | |
3837 | ||
b245fb67 MH |
3838 | SET_NETDEV_DEV(netdev, &pdev->dev); |
3839 | ||
0da34b6d | 3840 | mgp = netdev_priv(netdev); |
0da34b6d BG |
3841 | mgp->dev = netdev; |
3842 | mgp->pdev = pdev; | |
3843 | mgp->csum_flag = MXGEFW_FLAGS_CKSUM; | |
3844 | mgp->pause = myri10ge_flow_control; | |
3845 | mgp->intr_coal_delay = myri10ge_intr_coal_delay; | |
c58ac5ca | 3846 | mgp->msg_enable = netif_msg_init(myri10ge_debug, MYRI10GE_MSG_DEFAULT); |
2d90b0aa | 3847 | mgp->board_number = board_number; |
0da34b6d BG |
3848 | init_waitqueue_head(&mgp->down_wq); |
3849 | ||
3850 | if (pci_enable_device(pdev)) { | |
3851 | dev_err(&pdev->dev, "pci_enable_device call failed\n"); | |
3852 | status = -ENODEV; | |
3853 | goto abort_with_netdev; | |
3854 | } | |
0da34b6d BG |
3855 | |
3856 | /* Find the vendor-specific cap so we can check | |
3857 | * the reboot register later on */ | |
3858 | mgp->vendor_specific_offset | |
3859 | = pci_find_capability(pdev, PCI_CAP_ID_VNDR); | |
3860 | ||
3861 | /* Set our max read request to 4KB */ | |
302d242c | 3862 | status = pcie_set_readrq(pdev, 4096); |
0da34b6d BG |
3863 | if (status != 0) { |
3864 | dev_err(&pdev->dev, "Error %d writing PCI_EXP_DEVCTL\n", | |
3865 | status); | |
e3fd5534 | 3866 | goto abort_with_enabled; |
0da34b6d BG |
3867 | } |
3868 | ||
3869 | pci_set_master(pdev); | |
3870 | dac_enabled = 1; | |
6a35528a | 3871 | status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); |
0da34b6d BG |
3872 | if (status != 0) { |
3873 | dac_enabled = 0; | |
3874 | dev_err(&pdev->dev, | |
898eb71c JP |
3875 | "64-bit pci address mask was refused, " |
3876 | "trying 32-bit\n"); | |
284901a9 | 3877 | status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
0da34b6d BG |
3878 | } |
3879 | if (status != 0) { | |
3880 | dev_err(&pdev->dev, "Error %d setting DMA mask\n", status); | |
e3fd5534 | 3881 | goto abort_with_enabled; |
0da34b6d | 3882 | } |
6a35528a | 3883 | (void)pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); |
b10c0668 BG |
3884 | mgp->cmd = dma_alloc_coherent(&pdev->dev, sizeof(*mgp->cmd), |
3885 | &mgp->cmd_bus, GFP_KERNEL); | |
0da34b6d | 3886 | if (mgp->cmd == NULL) |
e3fd5534 | 3887 | goto abort_with_enabled; |
0da34b6d | 3888 | |
0da34b6d BG |
3889 | mgp->board_span = pci_resource_len(pdev, 0); |
3890 | mgp->iomem_base = pci_resource_start(pdev, 0); | |
3891 | mgp->mtrr = -1; | |
276e26c3 | 3892 | mgp->wc_enabled = 0; |
0da34b6d BG |
3893 | #ifdef CONFIG_MTRR |
3894 | mgp->mtrr = mtrr_add(mgp->iomem_base, mgp->board_span, | |
3895 | MTRR_TYPE_WRCOMB, 1); | |
276e26c3 BG |
3896 | if (mgp->mtrr >= 0) |
3897 | mgp->wc_enabled = 1; | |
0da34b6d | 3898 | #endif |
c7f80993 | 3899 | mgp->sram = ioremap_wc(mgp->iomem_base, mgp->board_span); |
0da34b6d BG |
3900 | if (mgp->sram == NULL) { |
3901 | dev_err(&pdev->dev, "ioremap failed for %ld bytes at 0x%lx\n", | |
3902 | mgp->board_span, mgp->iomem_base); | |
3903 | status = -ENXIO; | |
c7f80993 | 3904 | goto abort_with_mtrr; |
0da34b6d | 3905 | } |
00b5e505 BG |
3906 | hdr_offset = |
3907 | ntohl(__raw_readl(mgp->sram + MCP_HEADER_PTR_OFFSET)) & 0xffffc; | |
3908 | ss_offset = hdr_offset + offsetof(struct mcp_gen_header, string_specs); | |
3909 | mgp->sram_size = ntohl(__raw_readl(mgp->sram + ss_offset)); | |
3910 | if (mgp->sram_size > mgp->board_span || | |
3911 | mgp->sram_size <= MYRI10GE_FW_OFFSET) { | |
3912 | dev_err(&pdev->dev, | |
3913 | "invalid sram_size %dB or board span %ldB\n", | |
3914 | mgp->sram_size, mgp->board_span); | |
3915 | goto abort_with_ioremap; | |
3916 | } | |
0da34b6d | 3917 | memcpy_fromio(mgp->eeprom_strings, |
00b5e505 | 3918 | mgp->sram + mgp->sram_size, MYRI10GE_EEPROM_STRINGS_SIZE); |
0da34b6d BG |
3919 | memset(mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE - 2, 0, 2); |
3920 | status = myri10ge_read_mac_addr(mgp); | |
3921 | if (status) | |
3922 | goto abort_with_ioremap; | |
3923 | ||
3924 | for (i = 0; i < ETH_ALEN; i++) | |
3925 | netdev->dev_addr[i] = mgp->mac_addr[i]; | |
3926 | ||
5443e9ea BG |
3927 | myri10ge_select_firmware(mgp); |
3928 | ||
0dcffac1 | 3929 | status = myri10ge_load_firmware(mgp, 1); |
0da34b6d BG |
3930 | if (status != 0) { |
3931 | dev_err(&pdev->dev, "failed to load firmware\n"); | |
0dcffac1 BG |
3932 | goto abort_with_ioremap; |
3933 | } | |
3934 | myri10ge_probe_slices(mgp); | |
3935 | status = myri10ge_alloc_slices(mgp); | |
3936 | if (status != 0) { | |
3937 | dev_err(&pdev->dev, "failed to alloc slice state\n"); | |
3938 | goto abort_with_firmware; | |
0da34b6d | 3939 | } |
236bb5e6 | 3940 | netdev->real_num_tx_queues = mgp->num_slices; |
0da34b6d BG |
3941 | status = myri10ge_reset(mgp); |
3942 | if (status != 0) { | |
3943 | dev_err(&pdev->dev, "failed reset\n"); | |
0dcffac1 | 3944 | goto abort_with_slices; |
0da34b6d | 3945 | } |
5dd2d332 | 3946 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
3947 | myri10ge_setup_dca(mgp); |
3948 | #endif | |
0da34b6d BG |
3949 | pci_set_drvdata(pdev, mgp); |
3950 | if ((myri10ge_initial_mtu + ETH_HLEN) > MYRI10GE_MAX_ETHER_MTU) | |
3951 | myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN; | |
3952 | if ((myri10ge_initial_mtu + ETH_HLEN) < 68) | |
3953 | myri10ge_initial_mtu = 68; | |
8126089f SH |
3954 | |
3955 | netdev->netdev_ops = &myri10ge_netdev_ops; | |
0da34b6d | 3956 | netdev->mtu = myri10ge_initial_mtu; |
0da34b6d | 3957 | netdev->base_addr = mgp->iomem_base; |
4f93fde0 | 3958 | netdev->features = mgp->features; |
236bb5e6 | 3959 | |
0da34b6d BG |
3960 | if (dac_enabled) |
3961 | netdev->features |= NETIF_F_HIGHDMA; | |
2552c31b | 3962 | netdev->features |= NETIF_F_LRO; |
0da34b6d | 3963 | |
dddc045e BG |
3964 | netdev->vlan_features |= mgp->features; |
3965 | if (mgp->fw_ver_tiny < 37) | |
3966 | netdev->vlan_features &= ~NETIF_F_TSO6; | |
3967 | if (mgp->fw_ver_tiny < 32) | |
3968 | netdev->vlan_features &= ~NETIF_F_TSO; | |
3969 | ||
21d05db1 BG |
3970 | /* make sure we can get an irq, and that MSI can be |
3971 | * setup (if available). Also ensure netdev->irq | |
3972 | * is set to correct value if MSI is enabled */ | |
3973 | status = myri10ge_request_irq(mgp); | |
3974 | if (status != 0) | |
3975 | goto abort_with_firmware; | |
3976 | netdev->irq = pdev->irq; | |
3977 | myri10ge_free_irq(mgp); | |
3978 | ||
0da34b6d BG |
3979 | /* Save configuration space to be restored if the |
3980 | * nic resets due to a parity error */ | |
83f6e152 | 3981 | pci_save_state(pdev); |
0da34b6d BG |
3982 | |
3983 | /* Setup the watchdog timer */ | |
3984 | setup_timer(&mgp->watchdog_timer, myri10ge_watchdog_timer, | |
3985 | (unsigned long)mgp); | |
3986 | ||
59081825 | 3987 | spin_lock_init(&mgp->stats_lock); |
0da34b6d | 3988 | SET_ETHTOOL_OPS(netdev, &myri10ge_ethtool_ops); |
c4028958 | 3989 | INIT_WORK(&mgp->watchdog_work, myri10ge_watchdog); |
0da34b6d BG |
3990 | status = register_netdev(netdev); |
3991 | if (status != 0) { | |
3992 | dev_err(&pdev->dev, "register_netdev failed: %d\n", status); | |
7adda30c | 3993 | goto abort_with_state; |
0da34b6d | 3994 | } |
0dcffac1 BG |
3995 | if (mgp->msix_enabled) |
3996 | dev_info(dev, "%d MSI-X IRQs, tx bndry %d, fw %s, WC %s\n", | |
3997 | mgp->num_slices, mgp->tx_boundary, mgp->fw_name, | |
3998 | (mgp->wc_enabled ? "Enabled" : "Disabled")); | |
3999 | else | |
4000 | dev_info(dev, "%s IRQ %d, tx bndry %d, fw %s, WC %s\n", | |
4001 | mgp->msi_enabled ? "MSI" : "xPIC", | |
4002 | netdev->irq, mgp->tx_boundary, mgp->fw_name, | |
4003 | (mgp->wc_enabled ? "Enabled" : "Disabled")); | |
0da34b6d | 4004 | |
2d90b0aa | 4005 | board_number++; |
0da34b6d BG |
4006 | return 0; |
4007 | ||
7adda30c | 4008 | abort_with_state: |
83f6e152 | 4009 | pci_restore_state(pdev); |
0da34b6d | 4010 | |
0dcffac1 BG |
4011 | abort_with_slices: |
4012 | myri10ge_free_slices(mgp); | |
4013 | ||
0da34b6d BG |
4014 | abort_with_firmware: |
4015 | myri10ge_dummy_rdma(mgp, 0); | |
4016 | ||
0da34b6d | 4017 | abort_with_ioremap: |
0f840011 BG |
4018 | if (mgp->mac_addr_string != NULL) |
4019 | dev_err(&pdev->dev, | |
4020 | "myri10ge_probe() failed: MAC=%s, SN=%ld\n", | |
4021 | mgp->mac_addr_string, mgp->serial_number); | |
0da34b6d BG |
4022 | iounmap(mgp->sram); |
4023 | ||
c7f80993 | 4024 | abort_with_mtrr: |
0da34b6d BG |
4025 | #ifdef CONFIG_MTRR |
4026 | if (mgp->mtrr >= 0) | |
4027 | mtrr_del(mgp->mtrr, mgp->iomem_base, mgp->board_span); | |
4028 | #endif | |
b10c0668 BG |
4029 | dma_free_coherent(&pdev->dev, sizeof(*mgp->cmd), |
4030 | mgp->cmd, mgp->cmd_bus); | |
0da34b6d | 4031 | |
e3fd5534 BG |
4032 | abort_with_enabled: |
4033 | pci_disable_device(pdev); | |
0da34b6d | 4034 | |
e3fd5534 | 4035 | abort_with_netdev: |
0da34b6d BG |
4036 | free_netdev(netdev); |
4037 | return status; | |
4038 | } | |
4039 | ||
4040 | /* | |
4041 | * myri10ge_remove | |
4042 | * | |
4043 | * Does what is necessary to shutdown one Myrinet device. Called | |
4044 | * once for each Myrinet card by the kernel when a module is | |
4045 | * unloaded. | |
4046 | */ | |
4047 | static void myri10ge_remove(struct pci_dev *pdev) | |
4048 | { | |
4049 | struct myri10ge_priv *mgp; | |
4050 | struct net_device *netdev; | |
0da34b6d BG |
4051 | |
4052 | mgp = pci_get_drvdata(pdev); | |
4053 | if (mgp == NULL) | |
4054 | return; | |
4055 | ||
4056 | flush_scheduled_work(); | |
4057 | netdev = mgp->dev; | |
4058 | unregister_netdev(netdev); | |
0da34b6d | 4059 | |
5dd2d332 | 4060 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
4061 | myri10ge_teardown_dca(mgp); |
4062 | #endif | |
0da34b6d BG |
4063 | myri10ge_dummy_rdma(mgp, 0); |
4064 | ||
7adda30c | 4065 | /* avoid a memory leak */ |
83f6e152 | 4066 | pci_restore_state(pdev); |
7adda30c | 4067 | |
0da34b6d BG |
4068 | iounmap(mgp->sram); |
4069 | ||
4070 | #ifdef CONFIG_MTRR | |
4071 | if (mgp->mtrr >= 0) | |
4072 | mtrr_del(mgp->mtrr, mgp->iomem_base, mgp->board_span); | |
4073 | #endif | |
0dcffac1 BG |
4074 | myri10ge_free_slices(mgp); |
4075 | if (mgp->msix_vectors != NULL) | |
4076 | kfree(mgp->msix_vectors); | |
b10c0668 BG |
4077 | dma_free_coherent(&pdev->dev, sizeof(*mgp->cmd), |
4078 | mgp->cmd, mgp->cmd_bus); | |
0da34b6d BG |
4079 | |
4080 | free_netdev(netdev); | |
e3fd5534 | 4081 | pci_disable_device(pdev); |
0da34b6d BG |
4082 | pci_set_drvdata(pdev, NULL); |
4083 | } | |
4084 | ||
b10c0668 | 4085 | #define PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E 0x0008 |
a07bc1ff | 4086 | #define PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E_9 0x0009 |
0da34b6d BG |
4087 | |
4088 | static struct pci_device_id myri10ge_pci_tbl[] = { | |
b10c0668 | 4089 | {PCI_DEVICE(PCI_VENDOR_ID_MYRICOM, PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E)}, |
a07bc1ff BG |
4090 | {PCI_DEVICE |
4091 | (PCI_VENDOR_ID_MYRICOM, PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E_9)}, | |
0da34b6d BG |
4092 | {0}, |
4093 | }; | |
4094 | ||
97131079 BG |
4095 | MODULE_DEVICE_TABLE(pci, myri10ge_pci_tbl); |
4096 | ||
0da34b6d BG |
4097 | static struct pci_driver myri10ge_driver = { |
4098 | .name = "myri10ge", | |
4099 | .probe = myri10ge_probe, | |
4100 | .remove = myri10ge_remove, | |
4101 | .id_table = myri10ge_pci_tbl, | |
4102 | #ifdef CONFIG_PM | |
4103 | .suspend = myri10ge_suspend, | |
4104 | .resume = myri10ge_resume, | |
4105 | #endif | |
4106 | }; | |
4107 | ||
5dd2d332 | 4108 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
4109 | static int |
4110 | myri10ge_notify_dca(struct notifier_block *nb, unsigned long event, void *p) | |
4111 | { | |
4112 | int err = driver_for_each_device(&myri10ge_driver.driver, | |
4113 | NULL, &event, | |
4114 | myri10ge_notify_dca_device); | |
4115 | ||
4116 | if (err) | |
4117 | return NOTIFY_BAD; | |
4118 | return NOTIFY_DONE; | |
4119 | } | |
4120 | ||
4121 | static struct notifier_block myri10ge_dca_notifier = { | |
4122 | .notifier_call = myri10ge_notify_dca, | |
4123 | .next = NULL, | |
4124 | .priority = 0, | |
4125 | }; | |
4ee2ac51 | 4126 | #endif /* CONFIG_MYRI10GE_DCA */ |
981813d8 | 4127 | |
0da34b6d BG |
4128 | static __init int myri10ge_init_module(void) |
4129 | { | |
4130 | printk(KERN_INFO "%s: Version %s\n", myri10ge_driver.name, | |
4131 | MYRI10GE_VERSION_STR); | |
0dcffac1 | 4132 | |
236bb5e6 | 4133 | if (myri10ge_rss_hash > MXGEFW_RSS_HASH_TYPE_MAX) { |
0dcffac1 BG |
4134 | printk(KERN_ERR |
4135 | "%s: Illegal rssh hash type %d, defaulting to source port\n", | |
4136 | myri10ge_driver.name, myri10ge_rss_hash); | |
4137 | myri10ge_rss_hash = MXGEFW_RSS_HASH_TYPE_SRC_PORT; | |
4138 | } | |
5dd2d332 | 4139 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
4140 | dca_register_notify(&myri10ge_dca_notifier); |
4141 | #endif | |
236bb5e6 BG |
4142 | if (myri10ge_max_slices > MYRI10GE_MAX_SLICES) |
4143 | myri10ge_max_slices = MYRI10GE_MAX_SLICES; | |
0dcffac1 | 4144 | |
0da34b6d BG |
4145 | return pci_register_driver(&myri10ge_driver); |
4146 | } | |
4147 | ||
4148 | module_init(myri10ge_init_module); | |
4149 | ||
4150 | static __exit void myri10ge_cleanup_module(void) | |
4151 | { | |
5dd2d332 | 4152 | #ifdef CONFIG_MYRI10GE_DCA |
981813d8 BG |
4153 | dca_unregister_notify(&myri10ge_dca_notifier); |
4154 | #endif | |
0da34b6d BG |
4155 | pci_unregister_driver(&myri10ge_driver); |
4156 | } | |
4157 | ||
4158 | module_exit(myri10ge_cleanup_module); |