| /* |
| * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. |
| * Copyright 2007 Nuova Systems, Inc. All rights reserved. |
| * |
| * This program is free software; you may redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| * |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/types.h> |
| #include <linux/pci.h> |
| #include <linux/netdevice.h> |
| |
| #include "wq_enet_desc.h" |
| #include "rq_enet_desc.h" |
| #include "cq_enet_desc.h" |
| #include "vnic_resource.h" |
| #include "vnic_enet.h" |
| #include "vnic_dev.h" |
| #include "vnic_wq.h" |
| #include "vnic_rq.h" |
| #include "vnic_cq.h" |
| #include "vnic_intr.h" |
| #include "vnic_stats.h" |
| #include "vnic_nic.h" |
| #include "vnic_rss.h" |
| #include "enic_res.h" |
| #include "enic.h" |
| |
| int enic_get_vnic_config(struct enic *enic) |
| { |
| struct vnic_enet_config *c = &enic->config; |
| int err; |
| |
| err = vnic_dev_get_mac_addr(enic->vdev, enic->mac_addr); |
| if (err) { |
| dev_err(enic_get_dev(enic), |
| "Error getting MAC addr, %d\n", err); |
| return err; |
| } |
| |
| #define GET_CONFIG(m) \ |
| do { \ |
| err = vnic_dev_spec(enic->vdev, \ |
| offsetof(struct vnic_enet_config, m), \ |
| sizeof(c->m), &c->m); \ |
| if (err) { \ |
| dev_err(enic_get_dev(enic), \ |
| "Error getting %s, %d\n", #m, err); \ |
| return err; \ |
| } \ |
| } while (0) |
| |
| GET_CONFIG(flags); |
| GET_CONFIG(wq_desc_count); |
| GET_CONFIG(rq_desc_count); |
| GET_CONFIG(mtu); |
| GET_CONFIG(intr_timer_type); |
| GET_CONFIG(intr_mode); |
| GET_CONFIG(intr_timer_usec); |
| GET_CONFIG(loop_tag); |
| GET_CONFIG(num_arfs); |
| |
| c->wq_desc_count = |
| min_t(u32, ENIC_MAX_WQ_DESCS, |
| max_t(u32, ENIC_MIN_WQ_DESCS, |
| c->wq_desc_count)); |
| c->wq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */ |
| |
| c->rq_desc_count = |
| min_t(u32, ENIC_MAX_RQ_DESCS, |
| max_t(u32, ENIC_MIN_RQ_DESCS, |
| c->rq_desc_count)); |
| c->rq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */ |
| |
| if (c->mtu == 0) |
| c->mtu = 1500; |
| c->mtu = min_t(u16, ENIC_MAX_MTU, |
| max_t(u16, ENIC_MIN_MTU, |
| c->mtu)); |
| |
| c->intr_timer_usec = min_t(u32, c->intr_timer_usec, |
| vnic_dev_get_intr_coal_timer_max(enic->vdev)); |
| |
| dev_info(enic_get_dev(enic), |
| "vNIC MAC addr %pM wq/rq %d/%d mtu %d\n", |
| enic->mac_addr, c->wq_desc_count, c->rq_desc_count, c->mtu); |
| |
| dev_info(enic_get_dev(enic), "vNIC csum tx/rx %s/%s " |
| "tso/lro %s/%s rss %s intr mode %s type %s timer %d usec " |
| "loopback tag 0x%04x\n", |
| ENIC_SETTING(enic, TXCSUM) ? "yes" : "no", |
| ENIC_SETTING(enic, RXCSUM) ? "yes" : "no", |
| ENIC_SETTING(enic, TSO) ? "yes" : "no", |
| ENIC_SETTING(enic, LRO) ? "yes" : "no", |
| ENIC_SETTING(enic, RSS) ? "yes" : "no", |
| c->intr_mode == VENET_INTR_MODE_INTX ? "INTx" : |
| c->intr_mode == VENET_INTR_MODE_MSI ? "MSI" : |
| c->intr_mode == VENET_INTR_MODE_ANY ? "any" : |
| "unknown", |
| c->intr_timer_type == VENET_INTR_TYPE_MIN ? "min" : |
| c->intr_timer_type == VENET_INTR_TYPE_IDLE ? "idle" : |
| "unknown", |
| c->intr_timer_usec, |
| c->loop_tag); |
| |
| return 0; |
| } |
| |
| int enic_add_vlan(struct enic *enic, u16 vlanid) |
| { |
| u64 a0 = vlanid, a1 = 0; |
| int wait = 1000; |
| int err; |
| |
| err = vnic_dev_cmd(enic->vdev, CMD_VLAN_ADD, &a0, &a1, wait); |
| if (err) |
| dev_err(enic_get_dev(enic), "Can't add vlan id, %d\n", err); |
| |
| return err; |
| } |
| |
| int enic_del_vlan(struct enic *enic, u16 vlanid) |
| { |
| u64 a0 = vlanid, a1 = 0; |
| int wait = 1000; |
| int err; |
| |
| err = vnic_dev_cmd(enic->vdev, CMD_VLAN_DEL, &a0, &a1, wait); |
| if (err) |
| dev_err(enic_get_dev(enic), "Can't delete vlan id, %d\n", err); |
| |
| return err; |
| } |
| |
| int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type, |
| u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en, |
| u8 ig_vlan_strip_en) |
| { |
| u64 a0, a1; |
| u32 nic_cfg; |
| int wait = 1000; |
| |
| vnic_set_nic_cfg(&nic_cfg, rss_default_cpu, |
| rss_hash_type, rss_hash_bits, rss_base_cpu, |
| rss_enable, tso_ipid_split_en, ig_vlan_strip_en); |
| |
| a0 = nic_cfg; |
| a1 = 0; |
| |
| return vnic_dev_cmd(enic->vdev, CMD_NIC_CFG, &a0, &a1, wait); |
| } |
| |
| int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len) |
| { |
| u64 a0 = (u64)key_pa, a1 = len; |
| int wait = 1000; |
| |
| return vnic_dev_cmd(enic->vdev, CMD_RSS_KEY, &a0, &a1, wait); |
| } |
| |
| int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len) |
| { |
| u64 a0 = (u64)cpu_pa, a1 = len; |
| int wait = 1000; |
| |
| return vnic_dev_cmd(enic->vdev, CMD_RSS_CPU, &a0, &a1, wait); |
| } |
| |
| void enic_free_vnic_resources(struct enic *enic) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < enic->wq_count; i++) |
| vnic_wq_free(&enic->wq[i]); |
| for (i = 0; i < enic->rq_count; i++) |
| vnic_rq_free(&enic->rq[i]); |
| for (i = 0; i < enic->cq_count; i++) |
| vnic_cq_free(&enic->cq[i]); |
| for (i = 0; i < enic->intr_count; i++) |
| vnic_intr_free(&enic->intr[i]); |
| } |
| |
| void enic_get_res_counts(struct enic *enic) |
| { |
| enic->wq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_WQ); |
| enic->rq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_RQ); |
| enic->cq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_CQ); |
| enic->intr_count = vnic_dev_get_res_count(enic->vdev, |
| RES_TYPE_INTR_CTRL); |
| |
| dev_info(enic_get_dev(enic), |
| "vNIC resources avail: wq %d rq %d cq %d intr %d\n", |
| enic->wq_count, enic->rq_count, |
| enic->cq_count, enic->intr_count); |
| } |
| |
| void enic_init_vnic_resources(struct enic *enic) |
| { |
| enum vnic_dev_intr_mode intr_mode; |
| unsigned int mask_on_assertion; |
| unsigned int interrupt_offset; |
| unsigned int error_interrupt_enable; |
| unsigned int error_interrupt_offset; |
| unsigned int cq_index; |
| unsigned int i; |
| |
| intr_mode = vnic_dev_get_intr_mode(enic->vdev); |
| |
| /* Init RQ/WQ resources. |
| * |
| * RQ[0 - n-1] point to CQ[0 - n-1] |
| * WQ[0 - m-1] point to CQ[n - n+m-1] |
| * |
| * Error interrupt is not enabled for MSI. |
| */ |
| |
| switch (intr_mode) { |
| case VNIC_DEV_INTR_MODE_INTX: |
| case VNIC_DEV_INTR_MODE_MSIX: |
| error_interrupt_enable = 1; |
| error_interrupt_offset = enic->intr_count - 2; |
| break; |
| default: |
| error_interrupt_enable = 0; |
| error_interrupt_offset = 0; |
| break; |
| } |
| |
| for (i = 0; i < enic->rq_count; i++) { |
| cq_index = i; |
| vnic_rq_init(&enic->rq[i], |
| cq_index, |
| error_interrupt_enable, |
| error_interrupt_offset); |
| } |
| |
| for (i = 0; i < enic->wq_count; i++) { |
| cq_index = enic->rq_count + i; |
| vnic_wq_init(&enic->wq[i], |
| cq_index, |
| error_interrupt_enable, |
| error_interrupt_offset); |
| } |
| |
| /* Init CQ resources |
| * |
| * CQ[0 - n+m-1] point to INTR[0] for INTx, MSI |
| * CQ[0 - n+m-1] point to INTR[0 - n+m-1] for MSI-X |
| */ |
| |
| for (i = 0; i < enic->cq_count; i++) { |
| |
| switch (intr_mode) { |
| case VNIC_DEV_INTR_MODE_MSIX: |
| interrupt_offset = i; |
| break; |
| default: |
| interrupt_offset = 0; |
| break; |
| } |
| |
| vnic_cq_init(&enic->cq[i], |
| 0 /* flow_control_enable */, |
| 1 /* color_enable */, |
| 0 /* cq_head */, |
| 0 /* cq_tail */, |
| 1 /* cq_tail_color */, |
| 1 /* interrupt_enable */, |
| 1 /* cq_entry_enable */, |
| 0 /* cq_message_enable */, |
| interrupt_offset, |
| 0 /* cq_message_addr */); |
| } |
| |
| /* Init INTR resources |
| * |
| * mask_on_assertion is not used for INTx due to the level- |
| * triggered nature of INTx |
| */ |
| |
| switch (intr_mode) { |
| case VNIC_DEV_INTR_MODE_MSI: |
| case VNIC_DEV_INTR_MODE_MSIX: |
| mask_on_assertion = 1; |
| break; |
| default: |
| mask_on_assertion = 0; |
| break; |
| } |
| |
| for (i = 0; i < enic->intr_count; i++) { |
| vnic_intr_init(&enic->intr[i], |
| enic->config.intr_timer_usec, |
| enic->config.intr_timer_type, |
| mask_on_assertion); |
| } |
| } |
| |
| int enic_alloc_vnic_resources(struct enic *enic) |
| { |
| enum vnic_dev_intr_mode intr_mode; |
| unsigned int i; |
| int err; |
| |
| intr_mode = vnic_dev_get_intr_mode(enic->vdev); |
| |
| dev_info(enic_get_dev(enic), "vNIC resources used: " |
| "wq %d rq %d cq %d intr %d intr mode %s\n", |
| enic->wq_count, enic->rq_count, |
| enic->cq_count, enic->intr_count, |
| intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" : |
| intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" : |
| intr_mode == VNIC_DEV_INTR_MODE_MSIX ? "MSI-X" : |
| "unknown"); |
| |
| /* Allocate queue resources |
| */ |
| |
| for (i = 0; i < enic->wq_count; i++) { |
| err = vnic_wq_alloc(enic->vdev, &enic->wq[i], i, |
| enic->config.wq_desc_count, |
| sizeof(struct wq_enet_desc)); |
| if (err) |
| goto err_out_cleanup; |
| } |
| |
| for (i = 0; i < enic->rq_count; i++) { |
| err = vnic_rq_alloc(enic->vdev, &enic->rq[i], i, |
| enic->config.rq_desc_count, |
| sizeof(struct rq_enet_desc)); |
| if (err) |
| goto err_out_cleanup; |
| } |
| |
| for (i = 0; i < enic->cq_count; i++) { |
| if (i < enic->rq_count) |
| err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i, |
| enic->config.rq_desc_count, |
| sizeof(struct cq_enet_rq_desc)); |
| else |
| err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i, |
| enic->config.wq_desc_count, |
| sizeof(struct cq_enet_wq_desc)); |
| if (err) |
| goto err_out_cleanup; |
| } |
| |
| for (i = 0; i < enic->intr_count; i++) { |
| err = vnic_intr_alloc(enic->vdev, &enic->intr[i], i); |
| if (err) |
| goto err_out_cleanup; |
| } |
| |
| /* Hook remaining resource |
| */ |
| |
| enic->legacy_pba = vnic_dev_get_res(enic->vdev, |
| RES_TYPE_INTR_PBA_LEGACY, 0); |
| if (!enic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) { |
| dev_err(enic_get_dev(enic), |
| "Failed to hook legacy pba resource\n"); |
| err = -ENODEV; |
| goto err_out_cleanup; |
| } |
| |
| return 0; |
| |
| err_out_cleanup: |
| enic_free_vnic_resources(enic); |
| |
| return err; |
| } |