2 * Copyright 2008 Cisco Systems, Inc. All rights reserved.
3 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
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.
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
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>
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"
35 #include "vnic_intr.h"
36 #include "vnic_stats.h"
42 int enic_get_vnic_config(struct enic *enic)
44 struct vnic_enet_config *c = &enic->config;
47 err = vnic_dev_mac_addr(enic->vdev, enic->mac_addr);
49 printk(KERN_ERR PFX "Error getting MAC addr, %d\n", err);
53 #define GET_CONFIG(m) \
55 err = vnic_dev_spec(enic->vdev, \
56 offsetof(struct vnic_enet_config, m), \
57 sizeof(c->m), &c->m); \
60 "Error getting %s, %d\n", #m, err); \
66 GET_CONFIG(wq_desc_count);
67 GET_CONFIG(rq_desc_count);
69 GET_CONFIG(intr_timer_type);
70 GET_CONFIG(intr_mode);
71 GET_CONFIG(intr_timer_usec);
74 min_t(u32, ENIC_MAX_WQ_DESCS,
75 max_t(u32, ENIC_MIN_WQ_DESCS,
77 c->wq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */
80 min_t(u32, ENIC_MAX_RQ_DESCS,
81 max_t(u32, ENIC_MIN_RQ_DESCS,
83 c->rq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */
87 c->mtu = min_t(u16, ENIC_MAX_MTU,
88 max_t(u16, ENIC_MIN_MTU,
91 c->intr_timer_usec = min_t(u32,
92 INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX),
95 printk(KERN_INFO PFX "vNIC MAC addr %pM wq/rq %d/%d\n",
96 enic->mac_addr, c->wq_desc_count, c->rq_desc_count);
97 printk(KERN_INFO PFX "vNIC mtu %d csum tx/rx %d/%d tso/lro %d/%d "
98 "intr timer %d usec\n",
99 c->mtu, ENIC_SETTING(enic, TXCSUM),
100 ENIC_SETTING(enic, RXCSUM), ENIC_SETTING(enic, TSO),
101 ENIC_SETTING(enic, LRO), c->intr_timer_usec);
106 void enic_add_multicast_addr(struct enic *enic, u8 *addr)
108 vnic_dev_add_addr(enic->vdev, addr);
111 void enic_del_multicast_addr(struct enic *enic, u8 *addr)
113 vnic_dev_del_addr(enic->vdev, addr);
116 void enic_add_vlan(struct enic *enic, u16 vlanid)
118 u64 a0 = vlanid, a1 = 0;
122 err = vnic_dev_cmd(enic->vdev, CMD_VLAN_ADD, &a0, &a1, wait);
124 printk(KERN_ERR PFX "Can't add vlan id, %d\n", err);
127 void enic_del_vlan(struct enic *enic, u16 vlanid)
129 u64 a0 = vlanid, a1 = 0;
133 err = vnic_dev_cmd(enic->vdev, CMD_VLAN_DEL, &a0, &a1, wait);
135 printk(KERN_ERR PFX "Can't delete vlan id, %d\n", err);
138 int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type,
139 u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en,
146 vnic_set_nic_cfg(&nic_cfg, rss_default_cpu,
147 rss_hash_type, rss_hash_bits, rss_base_cpu,
148 rss_enable, tso_ipid_split_en, ig_vlan_strip_en);
153 return vnic_dev_cmd(enic->vdev, CMD_NIC_CFG, &a0, &a1, wait);
156 int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len)
158 u64 a0 = (u64)key_pa, a1 = len;
161 return vnic_dev_cmd(enic->vdev, CMD_RSS_KEY, &a0, &a1, wait);
164 int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len)
166 u64 a0 = (u64)cpu_pa, a1 = len;
169 return vnic_dev_cmd(enic->vdev, CMD_RSS_CPU, &a0, &a1, wait);
172 void enic_free_vnic_resources(struct enic *enic)
176 for (i = 0; i < enic->wq_count; i++)
177 vnic_wq_free(&enic->wq[i]);
178 for (i = 0; i < enic->rq_count; i++)
179 vnic_rq_free(&enic->rq[i]);
180 for (i = 0; i < enic->cq_count; i++)
181 vnic_cq_free(&enic->cq[i]);
182 for (i = 0; i < enic->intr_count; i++)
183 vnic_intr_free(&enic->intr[i]);
186 void enic_get_res_counts(struct enic *enic)
188 enic->wq_count = min_t(int,
189 vnic_dev_get_res_count(enic->vdev, RES_TYPE_WQ),
191 enic->rq_count = min_t(int,
192 vnic_dev_get_res_count(enic->vdev, RES_TYPE_RQ),
194 enic->cq_count = min_t(int,
195 vnic_dev_get_res_count(enic->vdev, RES_TYPE_CQ),
197 enic->intr_count = min_t(int,
198 vnic_dev_get_res_count(enic->vdev, RES_TYPE_INTR_CTRL),
201 printk(KERN_INFO PFX "vNIC resources avail: "
202 "wq %d rq %d cq %d intr %d\n",
203 enic->wq_count, enic->rq_count,
204 enic->cq_count, enic->intr_count);
207 void enic_init_vnic_resources(struct enic *enic)
209 enum vnic_dev_intr_mode intr_mode;
210 unsigned int mask_on_assertion;
211 unsigned int interrupt_offset;
212 unsigned int error_interrupt_enable;
213 unsigned int error_interrupt_offset;
214 unsigned int cq_index;
217 intr_mode = vnic_dev_get_intr_mode(enic->vdev);
219 /* Init RQ/WQ resources.
221 * RQ[0 - n-1] point to CQ[0 - n-1]
222 * WQ[0 - m-1] point to CQ[n - n+m-1]
224 * Error interrupt is not enabled for MSI.
228 case VNIC_DEV_INTR_MODE_INTX:
229 case VNIC_DEV_INTR_MODE_MSIX:
230 error_interrupt_enable = 1;
231 error_interrupt_offset = enic->intr_count - 2;
234 error_interrupt_enable = 0;
235 error_interrupt_offset = 0;
239 for (i = 0; i < enic->rq_count; i++) {
241 vnic_rq_init(&enic->rq[i],
243 error_interrupt_enable,
244 error_interrupt_offset);
247 for (i = 0; i < enic->wq_count; i++) {
248 cq_index = enic->rq_count + i;
249 vnic_wq_init(&enic->wq[i],
251 error_interrupt_enable,
252 error_interrupt_offset);
257 * CQ[0 - n+m-1] point to INTR[0] for INTx, MSI
258 * CQ[0 - n+m-1] point to INTR[0 - n+m-1] for MSI-X
261 for (i = 0; i < enic->cq_count; i++) {
264 case VNIC_DEV_INTR_MODE_MSIX:
265 interrupt_offset = i;
268 interrupt_offset = 0;
272 vnic_cq_init(&enic->cq[i],
273 0 /* flow_control_enable */,
274 1 /* color_enable */,
277 1 /* cq_tail_color */,
278 1 /* interrupt_enable */,
279 1 /* cq_entry_enable */,
280 0 /* cq_message_enable */,
282 0 /* cq_message_addr */);
285 /* Init INTR resources
287 * mask_on_assertion is not used for INTx due to the level-
288 * triggered nature of INTx
292 case VNIC_DEV_INTR_MODE_MSI:
293 case VNIC_DEV_INTR_MODE_MSIX:
294 mask_on_assertion = 1;
297 mask_on_assertion = 0;
301 for (i = 0; i < enic->intr_count; i++) {
302 vnic_intr_init(&enic->intr[i],
303 INTR_COALESCE_USEC_TO_HW(enic->config.intr_timer_usec),
304 enic->config.intr_timer_type,
311 vnic_dev_stats_clear(enic->vdev);
314 int enic_alloc_vnic_resources(struct enic *enic)
316 enum vnic_dev_intr_mode intr_mode;
320 intr_mode = vnic_dev_get_intr_mode(enic->vdev);
322 printk(KERN_INFO PFX "vNIC resources used: "
323 "wq %d rq %d cq %d intr %d intr mode %s\n",
324 enic->wq_count, enic->rq_count,
325 enic->cq_count, enic->intr_count,
326 intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" :
327 intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" :
328 intr_mode == VNIC_DEV_INTR_MODE_MSIX ? "MSI-X" :
332 /* Allocate queue resources
335 for (i = 0; i < enic->wq_count; i++) {
336 err = vnic_wq_alloc(enic->vdev, &enic->wq[i], i,
337 enic->config.wq_desc_count,
338 sizeof(struct wq_enet_desc));
340 goto err_out_cleanup;
343 for (i = 0; i < enic->rq_count; i++) {
344 err = vnic_rq_alloc(enic->vdev, &enic->rq[i], i,
345 enic->config.rq_desc_count,
346 sizeof(struct rq_enet_desc));
348 goto err_out_cleanup;
351 for (i = 0; i < enic->cq_count; i++) {
352 if (i < enic->rq_count)
353 err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i,
354 enic->config.rq_desc_count,
355 sizeof(struct cq_enet_rq_desc));
357 err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i,
358 enic->config.wq_desc_count,
359 sizeof(struct cq_enet_wq_desc));
361 goto err_out_cleanup;
364 for (i = 0; i < enic->intr_count; i++) {
365 err = vnic_intr_alloc(enic->vdev, &enic->intr[i], i);
367 goto err_out_cleanup;
370 /* Hook remaining resource
373 enic->legacy_pba = vnic_dev_get_res(enic->vdev,
374 RES_TYPE_INTR_PBA_LEGACY, 0);
375 if (!enic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) {
376 printk(KERN_ERR PFX "Failed to hook legacy pba resource\n");
378 goto err_out_cleanup;
384 enic_free_vnic_resources(enic);