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01f2e4ea SF |
1 | /* |
2 | * Copyright 2008 Cisco Systems, Inc. All rights reserved. | |
3 | * Copyright 2007 Nuova Systems, Inc. All rights reserved. | |
4 | * | |
5 | * This program is free software; you may redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; version 2 of the License. | |
8 | * | |
9 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
10 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
11 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
12 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
13 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
14 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
15 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
16 | * SOFTWARE. | |
17 | * | |
18 | */ | |
19 | ||
20 | #include <linux/kernel.h> | |
21 | #include <linux/errno.h> | |
22 | #include <linux/types.h> | |
23 | #include <linux/pci.h> | |
24 | #include <linux/netdevice.h> | |
25 | ||
26 | #include "wq_enet_desc.h" | |
27 | #include "rq_enet_desc.h" | |
28 | #include "cq_enet_desc.h" | |
29 | #include "vnic_resource.h" | |
30 | #include "vnic_enet.h" | |
31 | #include "vnic_dev.h" | |
32 | #include "vnic_wq.h" | |
33 | #include "vnic_rq.h" | |
34 | #include "vnic_cq.h" | |
35 | #include "vnic_intr.h" | |
36 | #include "vnic_stats.h" | |
37 | #include "vnic_nic.h" | |
38 | #include "vnic_rss.h" | |
39 | #include "enic_res.h" | |
40 | #include "enic.h" | |
41 | ||
42 | int enic_get_vnic_config(struct enic *enic) | |
43 | { | |
44 | struct vnic_enet_config *c = &enic->config; | |
45 | int err; | |
46 | ||
47 | err = vnic_dev_mac_addr(enic->vdev, enic->mac_addr); | |
48 | if (err) { | |
49 | printk(KERN_ERR PFX "Error getting MAC addr, %d\n", err); | |
50 | return err; | |
51 | } | |
52 | ||
53 | #define GET_CONFIG(m) \ | |
54 | do { \ | |
55 | err = vnic_dev_spec(enic->vdev, \ | |
56 | offsetof(struct vnic_enet_config, m), \ | |
57 | sizeof(c->m), &c->m); \ | |
58 | if (err) { \ | |
59 | printk(KERN_ERR PFX \ | |
60 | "Error getting %s, %d\n", #m, err); \ | |
61 | return err; \ | |
62 | } \ | |
63 | } while (0) | |
64 | ||
65 | GET_CONFIG(flags); | |
66 | GET_CONFIG(wq_desc_count); | |
67 | GET_CONFIG(rq_desc_count); | |
68 | GET_CONFIG(mtu); | |
69 | GET_CONFIG(intr_timer); | |
70 | GET_CONFIG(intr_timer_type); | |
71 | GET_CONFIG(intr_mode); | |
72 | ||
73 | c->wq_desc_count = | |
74 | min_t(u32, ENIC_MAX_WQ_DESCS, | |
75 | max_t(u32, ENIC_MIN_WQ_DESCS, | |
76 | c->wq_desc_count)); | |
77 | c->wq_desc_count &= 0xfffffff0; /* must be aligned to groups of 16 */ | |
78 | ||
79 | c->rq_desc_count = | |
80 | min_t(u32, ENIC_MAX_RQ_DESCS, | |
81 | max_t(u32, ENIC_MIN_RQ_DESCS, | |
82 | c->rq_desc_count)); | |
83 | c->rq_desc_count &= 0xfffffff0; /* must be aligned to groups of 16 */ | |
84 | ||
85 | if (c->mtu == 0) | |
86 | c->mtu = 1500; | |
87 | c->mtu = min_t(u16, ENIC_MAX_MTU, | |
88 | max_t(u16, ENIC_MIN_MTU, | |
89 | c->mtu)); | |
90 | ||
91 | c->intr_timer = min_t(u16, VNIC_INTR_TIMER_MAX, c->intr_timer); | |
92 | ||
7c510e4b JB |
93 | printk(KERN_INFO PFX "vNIC MAC addr %pM wq/rq %d/%d\n", |
94 | enic->mac_addr, c->wq_desc_count, c->rq_desc_count); | |
01f2e4ea SF |
95 | printk(KERN_INFO PFX "vNIC mtu %d csum tx/rx %d/%d tso/lro %d/%d " |
96 | "intr timer %d\n", | |
97 | c->mtu, ENIC_SETTING(enic, TXCSUM), | |
98 | ENIC_SETTING(enic, RXCSUM), ENIC_SETTING(enic, TSO), | |
99 | ENIC_SETTING(enic, LRO), c->intr_timer); | |
100 | ||
101 | return 0; | |
102 | } | |
103 | ||
104 | void enic_add_station_addr(struct enic *enic) | |
105 | { | |
106 | vnic_dev_add_addr(enic->vdev, enic->mac_addr); | |
107 | } | |
108 | ||
109 | void enic_add_multicast_addr(struct enic *enic, u8 *addr) | |
110 | { | |
111 | vnic_dev_add_addr(enic->vdev, addr); | |
112 | } | |
113 | ||
114 | void enic_del_multicast_addr(struct enic *enic, u8 *addr) | |
115 | { | |
116 | vnic_dev_del_addr(enic->vdev, addr); | |
117 | } | |
118 | ||
119 | void enic_add_vlan(struct enic *enic, u16 vlanid) | |
120 | { | |
121 | u64 a0 = vlanid, a1 = 0; | |
122 | int wait = 1000; | |
123 | int err; | |
124 | ||
125 | err = vnic_dev_cmd(enic->vdev, CMD_VLAN_ADD, &a0, &a1, wait); | |
126 | if (err) | |
127 | printk(KERN_ERR PFX "Can't add vlan id, %d\n", err); | |
128 | } | |
129 | ||
130 | void enic_del_vlan(struct enic *enic, u16 vlanid) | |
131 | { | |
132 | u64 a0 = vlanid, a1 = 0; | |
133 | int wait = 1000; | |
134 | int err; | |
135 | ||
136 | err = vnic_dev_cmd(enic->vdev, CMD_VLAN_DEL, &a0, &a1, wait); | |
137 | if (err) | |
138 | printk(KERN_ERR PFX "Can't delete vlan id, %d\n", err); | |
139 | } | |
140 | ||
141 | int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type, | |
142 | u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en, | |
143 | u8 ig_vlan_strip_en) | |
144 | { | |
145 | u64 a0, a1; | |
146 | u32 nic_cfg; | |
147 | int wait = 1000; | |
148 | ||
149 | vnic_set_nic_cfg(&nic_cfg, rss_default_cpu, | |
150 | rss_hash_type, rss_hash_bits, rss_base_cpu, | |
151 | rss_enable, tso_ipid_split_en, ig_vlan_strip_en); | |
152 | ||
153 | a0 = nic_cfg; | |
154 | a1 = 0; | |
155 | ||
156 | return vnic_dev_cmd(enic->vdev, CMD_NIC_CFG, &a0, &a1, wait); | |
157 | } | |
158 | ||
6ba9cdc0 SF |
159 | int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len) |
160 | { | |
161 | u64 a0 = (u64)key_pa, a1 = len; | |
162 | int wait = 1000; | |
163 | ||
164 | return vnic_dev_cmd(enic->vdev, CMD_RSS_KEY, &a0, &a1, wait); | |
165 | } | |
166 | ||
167 | int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len) | |
168 | { | |
169 | u64 a0 = (u64)cpu_pa, a1 = len; | |
170 | int wait = 1000; | |
171 | ||
172 | return vnic_dev_cmd(enic->vdev, CMD_RSS_CPU, &a0, &a1, wait); | |
173 | } | |
174 | ||
01f2e4ea SF |
175 | void enic_free_vnic_resources(struct enic *enic) |
176 | { | |
177 | unsigned int i; | |
178 | ||
179 | for (i = 0; i < enic->wq_count; i++) | |
180 | vnic_wq_free(&enic->wq[i]); | |
181 | for (i = 0; i < enic->rq_count; i++) | |
182 | vnic_rq_free(&enic->rq[i]); | |
183 | for (i = 0; i < enic->cq_count; i++) | |
184 | vnic_cq_free(&enic->cq[i]); | |
185 | for (i = 0; i < enic->intr_count; i++) | |
186 | vnic_intr_free(&enic->intr[i]); | |
187 | } | |
188 | ||
189 | void enic_get_res_counts(struct enic *enic) | |
190 | { | |
6ba9cdc0 SF |
191 | enic->wq_count = min_t(int, |
192 | vnic_dev_get_res_count(enic->vdev, RES_TYPE_WQ), | |
193 | ENIC_WQ_MAX); | |
194 | enic->rq_count = min_t(int, | |
195 | vnic_dev_get_res_count(enic->vdev, RES_TYPE_RQ), | |
196 | ENIC_RQ_MAX); | |
197 | enic->cq_count = min_t(int, | |
198 | vnic_dev_get_res_count(enic->vdev, RES_TYPE_CQ), | |
199 | ENIC_CQ_MAX); | |
200 | enic->intr_count = min_t(int, | |
201 | vnic_dev_get_res_count(enic->vdev, RES_TYPE_INTR_CTRL), | |
202 | ENIC_INTR_MAX); | |
01f2e4ea SF |
203 | |
204 | printk(KERN_INFO PFX "vNIC resources avail: " | |
205 | "wq %d rq %d cq %d intr %d\n", | |
206 | enic->wq_count, enic->rq_count, | |
207 | enic->cq_count, enic->intr_count); | |
208 | } | |
209 | ||
210 | void enic_init_vnic_resources(struct enic *enic) | |
211 | { | |
212 | enum vnic_dev_intr_mode intr_mode; | |
213 | unsigned int mask_on_assertion; | |
214 | unsigned int interrupt_offset; | |
215 | unsigned int error_interrupt_enable; | |
216 | unsigned int error_interrupt_offset; | |
217 | unsigned int cq_index; | |
218 | unsigned int i; | |
219 | ||
220 | intr_mode = vnic_dev_get_intr_mode(enic->vdev); | |
221 | ||
222 | /* Init RQ/WQ resources. | |
223 | * | |
224 | * RQ[0 - n-1] point to CQ[0 - n-1] | |
225 | * WQ[0 - m-1] point to CQ[n - n+m-1] | |
226 | * | |
227 | * Error interrupt is not enabled for MSI. | |
228 | */ | |
229 | ||
230 | switch (intr_mode) { | |
231 | case VNIC_DEV_INTR_MODE_INTX: | |
232 | case VNIC_DEV_INTR_MODE_MSIX: | |
233 | error_interrupt_enable = 1; | |
234 | error_interrupt_offset = enic->intr_count - 2; | |
235 | break; | |
236 | default: | |
237 | error_interrupt_enable = 0; | |
238 | error_interrupt_offset = 0; | |
239 | break; | |
240 | } | |
241 | ||
242 | for (i = 0; i < enic->rq_count; i++) { | |
243 | cq_index = i; | |
244 | vnic_rq_init(&enic->rq[i], | |
245 | cq_index, | |
246 | error_interrupt_enable, | |
247 | error_interrupt_offset); | |
248 | } | |
249 | ||
250 | for (i = 0; i < enic->wq_count; i++) { | |
251 | cq_index = enic->rq_count + i; | |
252 | vnic_wq_init(&enic->wq[i], | |
253 | cq_index, | |
254 | error_interrupt_enable, | |
255 | error_interrupt_offset); | |
256 | } | |
257 | ||
258 | /* Init CQ resources | |
259 | * | |
260 | * CQ[0 - n+m-1] point to INTR[0] for INTx, MSI | |
261 | * CQ[0 - n+m-1] point to INTR[0 - n+m-1] for MSI-X | |
262 | */ | |
263 | ||
264 | for (i = 0; i < enic->cq_count; i++) { | |
265 | ||
266 | switch (intr_mode) { | |
267 | case VNIC_DEV_INTR_MODE_MSIX: | |
268 | interrupt_offset = i; | |
269 | break; | |
270 | default: | |
271 | interrupt_offset = 0; | |
272 | break; | |
273 | } | |
274 | ||
275 | vnic_cq_init(&enic->cq[i], | |
276 | 0 /* flow_control_enable */, | |
277 | 1 /* color_enable */, | |
278 | 0 /* cq_head */, | |
279 | 0 /* cq_tail */, | |
280 | 1 /* cq_tail_color */, | |
281 | 1 /* interrupt_enable */, | |
282 | 1 /* cq_entry_enable */, | |
283 | 0 /* cq_message_enable */, | |
284 | interrupt_offset, | |
285 | 0 /* cq_message_addr */); | |
286 | } | |
287 | ||
288 | /* Init INTR resources | |
289 | * | |
290 | * mask_on_assertion is not used for INTx due to the level- | |
291 | * triggered nature of INTx | |
292 | */ | |
293 | ||
294 | switch (intr_mode) { | |
295 | case VNIC_DEV_INTR_MODE_MSI: | |
296 | case VNIC_DEV_INTR_MODE_MSIX: | |
297 | mask_on_assertion = 1; | |
298 | break; | |
299 | default: | |
300 | mask_on_assertion = 0; | |
301 | break; | |
302 | } | |
303 | ||
304 | for (i = 0; i < enic->intr_count; i++) { | |
305 | vnic_intr_init(&enic->intr[i], | |
306 | enic->config.intr_timer, | |
307 | enic->config.intr_timer_type, | |
308 | mask_on_assertion); | |
309 | } | |
310 | ||
311 | /* Clear LIF stats | |
312 | */ | |
313 | ||
314 | vnic_dev_stats_clear(enic->vdev); | |
315 | } | |
316 | ||
317 | int enic_alloc_vnic_resources(struct enic *enic) | |
318 | { | |
319 | enum vnic_dev_intr_mode intr_mode; | |
320 | unsigned int i; | |
321 | int err; | |
322 | ||
323 | intr_mode = vnic_dev_get_intr_mode(enic->vdev); | |
324 | ||
325 | printk(KERN_INFO PFX "vNIC resources used: " | |
326 | "wq %d rq %d cq %d intr %d intr mode %s\n", | |
327 | enic->wq_count, enic->rq_count, | |
328 | enic->cq_count, enic->intr_count, | |
329 | intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" : | |
330 | intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" : | |
331 | intr_mode == VNIC_DEV_INTR_MODE_MSIX ? "MSI-X" : | |
332 | "unknown" | |
333 | ); | |
334 | ||
335 | /* Allocate queue resources | |
336 | */ | |
337 | ||
338 | for (i = 0; i < enic->wq_count; i++) { | |
339 | err = vnic_wq_alloc(enic->vdev, &enic->wq[i], i, | |
340 | enic->config.wq_desc_count, | |
341 | sizeof(struct wq_enet_desc)); | |
342 | if (err) | |
343 | goto err_out_cleanup; | |
344 | } | |
345 | ||
346 | for (i = 0; i < enic->rq_count; i++) { | |
347 | err = vnic_rq_alloc(enic->vdev, &enic->rq[i], i, | |
348 | enic->config.rq_desc_count, | |
349 | sizeof(struct rq_enet_desc)); | |
350 | if (err) | |
351 | goto err_out_cleanup; | |
352 | } | |
353 | ||
354 | for (i = 0; i < enic->cq_count; i++) { | |
355 | if (i < enic->rq_count) | |
356 | err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i, | |
357 | enic->config.rq_desc_count, | |
358 | sizeof(struct cq_enet_rq_desc)); | |
359 | else | |
360 | err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i, | |
361 | enic->config.wq_desc_count, | |
362 | sizeof(struct cq_enet_wq_desc)); | |
363 | if (err) | |
364 | goto err_out_cleanup; | |
365 | } | |
366 | ||
367 | for (i = 0; i < enic->intr_count; i++) { | |
368 | err = vnic_intr_alloc(enic->vdev, &enic->intr[i], i); | |
369 | if (err) | |
370 | goto err_out_cleanup; | |
371 | } | |
372 | ||
373 | /* Hook remaining resource | |
374 | */ | |
375 | ||
376 | enic->legacy_pba = vnic_dev_get_res(enic->vdev, | |
377 | RES_TYPE_INTR_PBA_LEGACY, 0); | |
378 | if (!enic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) { | |
379 | printk(KERN_ERR PFX "Failed to hook legacy pba resource\n"); | |
380 | err = -ENODEV; | |
381 | goto err_out_cleanup; | |
382 | } | |
383 | ||
384 | return 0; | |
385 | ||
386 | err_out_cleanup: | |
387 | enic_free_vnic_resources(enic); | |
388 | ||
389 | return err; | |
390 | } |