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);
70 GET_CONFIG(intr_timer_type);
71 GET_CONFIG(intr_mode);
74 min_t(u32, ENIC_MAX_WQ_DESCS,
75 max_t(u32, ENIC_MIN_WQ_DESCS,
77 c->wq_desc_count &= 0xfffffff0; /* must be aligned to groups of 16 */
80 min_t(u32, ENIC_MAX_RQ_DESCS,
81 max_t(u32, ENIC_MIN_RQ_DESCS,
83 c->rq_desc_count &= 0xfffffff0; /* must be aligned to groups of 16 */
87 c->mtu = min_t(u16, ENIC_MAX_MTU,
88 max_t(u16, ENIC_MIN_MTU,
91 c->intr_timer = min_t(u16, VNIC_INTR_TIMER_MAX, c->intr_timer);
93 printk(KERN_INFO PFX "vNIC MAC addr %02x:%02x:%02x:%02x:%02x:%02x "
95 enic->mac_addr[0], enic->mac_addr[1], enic->mac_addr[2],
96 enic->mac_addr[3], enic->mac_addr[4], enic->mac_addr[5],
97 c->wq_desc_count, c->rq_desc_count);
98 printk(KERN_INFO PFX "vNIC mtu %d csum tx/rx %d/%d tso/lro %d/%d "
100 c->mtu, ENIC_SETTING(enic, TXCSUM),
101 ENIC_SETTING(enic, RXCSUM), ENIC_SETTING(enic, TSO),
102 ENIC_SETTING(enic, LRO), c->intr_timer);
107 void enic_add_station_addr(struct enic *enic)
109 vnic_dev_add_addr(enic->vdev, enic->mac_addr);
112 void enic_add_multicast_addr(struct enic *enic, u8 *addr)
114 vnic_dev_add_addr(enic->vdev, addr);
117 void enic_del_multicast_addr(struct enic *enic, u8 *addr)
119 vnic_dev_del_addr(enic->vdev, addr);
122 void enic_add_vlan(struct enic *enic, u16 vlanid)
124 u64 a0 = vlanid, a1 = 0;
128 err = vnic_dev_cmd(enic->vdev, CMD_VLAN_ADD, &a0, &a1, wait);
130 printk(KERN_ERR PFX "Can't add vlan id, %d\n", err);
133 void enic_del_vlan(struct enic *enic, u16 vlanid)
135 u64 a0 = vlanid, a1 = 0;
139 err = vnic_dev_cmd(enic->vdev, CMD_VLAN_DEL, &a0, &a1, wait);
141 printk(KERN_ERR PFX "Can't delete vlan id, %d\n", err);
144 int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type,
145 u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en,
152 vnic_set_nic_cfg(&nic_cfg, rss_default_cpu,
153 rss_hash_type, rss_hash_bits, rss_base_cpu,
154 rss_enable, tso_ipid_split_en, ig_vlan_strip_en);
159 return vnic_dev_cmd(enic->vdev, CMD_NIC_CFG, &a0, &a1, wait);
162 void enic_free_vnic_resources(struct enic *enic)
166 for (i = 0; i < enic->wq_count; i++)
167 vnic_wq_free(&enic->wq[i]);
168 for (i = 0; i < enic->rq_count; i++)
169 vnic_rq_free(&enic->rq[i]);
170 for (i = 0; i < enic->cq_count; i++)
171 vnic_cq_free(&enic->cq[i]);
172 for (i = 0; i < enic->intr_count; i++)
173 vnic_intr_free(&enic->intr[i]);
176 void enic_get_res_counts(struct enic *enic)
178 enic->wq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_WQ);
179 enic->rq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_RQ);
180 enic->cq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_CQ);
181 enic->intr_count = vnic_dev_get_res_count(enic->vdev,
184 printk(KERN_INFO PFX "vNIC resources avail: "
185 "wq %d rq %d cq %d intr %d\n",
186 enic->wq_count, enic->rq_count,
187 enic->cq_count, enic->intr_count);
190 void enic_init_vnic_resources(struct enic *enic)
192 enum vnic_dev_intr_mode intr_mode;
193 unsigned int mask_on_assertion;
194 unsigned int interrupt_offset;
195 unsigned int error_interrupt_enable;
196 unsigned int error_interrupt_offset;
197 unsigned int cq_index;
200 intr_mode = vnic_dev_get_intr_mode(enic->vdev);
202 /* Init RQ/WQ resources.
204 * RQ[0 - n-1] point to CQ[0 - n-1]
205 * WQ[0 - m-1] point to CQ[n - n+m-1]
207 * Error interrupt is not enabled for MSI.
211 case VNIC_DEV_INTR_MODE_INTX:
212 case VNIC_DEV_INTR_MODE_MSIX:
213 error_interrupt_enable = 1;
214 error_interrupt_offset = enic->intr_count - 2;
217 error_interrupt_enable = 0;
218 error_interrupt_offset = 0;
222 for (i = 0; i < enic->rq_count; i++) {
224 vnic_rq_init(&enic->rq[i],
226 error_interrupt_enable,
227 error_interrupt_offset);
230 for (i = 0; i < enic->wq_count; i++) {
231 cq_index = enic->rq_count + i;
232 vnic_wq_init(&enic->wq[i],
234 error_interrupt_enable,
235 error_interrupt_offset);
240 * CQ[0 - n+m-1] point to INTR[0] for INTx, MSI
241 * CQ[0 - n+m-1] point to INTR[0 - n+m-1] for MSI-X
244 for (i = 0; i < enic->cq_count; i++) {
247 case VNIC_DEV_INTR_MODE_MSIX:
248 interrupt_offset = i;
251 interrupt_offset = 0;
255 vnic_cq_init(&enic->cq[i],
256 0 /* flow_control_enable */,
257 1 /* color_enable */,
260 1 /* cq_tail_color */,
261 1 /* interrupt_enable */,
262 1 /* cq_entry_enable */,
263 0 /* cq_message_enable */,
265 0 /* cq_message_addr */);
268 /* Init INTR resources
270 * mask_on_assertion is not used for INTx due to the level-
271 * triggered nature of INTx
275 case VNIC_DEV_INTR_MODE_MSI:
276 case VNIC_DEV_INTR_MODE_MSIX:
277 mask_on_assertion = 1;
280 mask_on_assertion = 0;
284 for (i = 0; i < enic->intr_count; i++) {
285 vnic_intr_init(&enic->intr[i],
286 enic->config.intr_timer,
287 enic->config.intr_timer_type,
294 vnic_dev_stats_clear(enic->vdev);
297 int enic_alloc_vnic_resources(struct enic *enic)
299 enum vnic_dev_intr_mode intr_mode;
303 intr_mode = vnic_dev_get_intr_mode(enic->vdev);
305 printk(KERN_INFO PFX "vNIC resources used: "
306 "wq %d rq %d cq %d intr %d intr mode %s\n",
307 enic->wq_count, enic->rq_count,
308 enic->cq_count, enic->intr_count,
309 intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" :
310 intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" :
311 intr_mode == VNIC_DEV_INTR_MODE_MSIX ? "MSI-X" :
315 /* Allocate queue resources
318 for (i = 0; i < enic->wq_count; i++) {
319 err = vnic_wq_alloc(enic->vdev, &enic->wq[i], i,
320 enic->config.wq_desc_count,
321 sizeof(struct wq_enet_desc));
323 goto err_out_cleanup;
326 for (i = 0; i < enic->rq_count; i++) {
327 err = vnic_rq_alloc(enic->vdev, &enic->rq[i], i,
328 enic->config.rq_desc_count,
329 sizeof(struct rq_enet_desc));
331 goto err_out_cleanup;
334 for (i = 0; i < enic->cq_count; i++) {
335 if (i < enic->rq_count)
336 err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i,
337 enic->config.rq_desc_count,
338 sizeof(struct cq_enet_rq_desc));
340 err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i,
341 enic->config.wq_desc_count,
342 sizeof(struct cq_enet_wq_desc));
344 goto err_out_cleanup;
347 for (i = 0; i < enic->intr_count; i++) {
348 err = vnic_intr_alloc(enic->vdev, &enic->intr[i], i);
350 goto err_out_cleanup;
353 /* Hook remaining resource
356 enic->legacy_pba = vnic_dev_get_res(enic->vdev,
357 RES_TYPE_INTR_PBA_LEGACY, 0);
358 if (!enic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) {
359 printk(KERN_ERR PFX "Failed to hook legacy pba resource\n");
361 goto err_out_cleanup;
367 enic_free_vnic_resources(enic);