| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright 2008 Cisco Systems, Inc. All rights reserved. |
| * Copyright 2007 Nuova Systems, Inc. All rights reserved. |
| */ |
| #include <linux/errno.h> |
| #include <linux/types.h> |
| #include <linux/pci.h> |
| #include "wq_enet_desc.h" |
| #include "rq_enet_desc.h" |
| #include "cq_enet_desc.h" |
| #include "vnic_resource.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 "fnic.h" |
| |
| int fnic_get_vnic_config(struct fnic *fnic) |
| { |
| struct vnic_fc_config *c = &fnic->config; |
| int err; |
| |
| #define GET_CONFIG(m) \ |
| do { \ |
| err = vnic_dev_spec(fnic->vdev, \ |
| offsetof(struct vnic_fc_config, m), \ |
| sizeof(c->m), &c->m); \ |
| if (err) { \ |
| shost_printk(KERN_ERR, fnic->lport->host, \ |
| "Error getting %s, %d\n", #m, \ |
| err); \ |
| return err; \ |
| } \ |
| } while (0); |
| |
| GET_CONFIG(node_wwn); |
| GET_CONFIG(port_wwn); |
| GET_CONFIG(wq_enet_desc_count); |
| GET_CONFIG(wq_copy_desc_count); |
| GET_CONFIG(rq_desc_count); |
| GET_CONFIG(maxdatafieldsize); |
| GET_CONFIG(ed_tov); |
| GET_CONFIG(ra_tov); |
| GET_CONFIG(intr_timer); |
| GET_CONFIG(intr_timer_type); |
| GET_CONFIG(flags); |
| GET_CONFIG(flogi_retries); |
| GET_CONFIG(flogi_timeout); |
| GET_CONFIG(plogi_retries); |
| GET_CONFIG(plogi_timeout); |
| GET_CONFIG(io_throttle_count); |
| GET_CONFIG(link_down_timeout); |
| GET_CONFIG(port_down_timeout); |
| GET_CONFIG(port_down_io_retries); |
| GET_CONFIG(luns_per_tgt); |
| |
| c->wq_enet_desc_count = |
| min_t(u32, VNIC_FNIC_WQ_DESCS_MAX, |
| max_t(u32, VNIC_FNIC_WQ_DESCS_MIN, |
| c->wq_enet_desc_count)); |
| c->wq_enet_desc_count = ALIGN(c->wq_enet_desc_count, 16); |
| |
| c->wq_copy_desc_count = |
| min_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MAX, |
| max_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MIN, |
| c->wq_copy_desc_count)); |
| c->wq_copy_desc_count = ALIGN(c->wq_copy_desc_count, 16); |
| |
| c->rq_desc_count = |
| min_t(u32, VNIC_FNIC_RQ_DESCS_MAX, |
| max_t(u32, VNIC_FNIC_RQ_DESCS_MIN, |
| c->rq_desc_count)); |
| c->rq_desc_count = ALIGN(c->rq_desc_count, 16); |
| |
| c->maxdatafieldsize = |
| min_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MAX, |
| max_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MIN, |
| c->maxdatafieldsize)); |
| c->ed_tov = |
| min_t(u32, VNIC_FNIC_EDTOV_MAX, |
| max_t(u32, VNIC_FNIC_EDTOV_MIN, |
| c->ed_tov)); |
| |
| c->ra_tov = |
| min_t(u32, VNIC_FNIC_RATOV_MAX, |
| max_t(u32, VNIC_FNIC_RATOV_MIN, |
| c->ra_tov)); |
| |
| c->flogi_retries = |
| min_t(u32, VNIC_FNIC_FLOGI_RETRIES_MAX, c->flogi_retries); |
| |
| c->flogi_timeout = |
| min_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MAX, |
| max_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MIN, |
| c->flogi_timeout)); |
| |
| c->plogi_retries = |
| min_t(u32, VNIC_FNIC_PLOGI_RETRIES_MAX, c->plogi_retries); |
| |
| c->plogi_timeout = |
| min_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MAX, |
| max_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MIN, |
| c->plogi_timeout)); |
| |
| c->io_throttle_count = |
| min_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MAX, |
| max_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MIN, |
| c->io_throttle_count)); |
| |
| c->link_down_timeout = |
| min_t(u32, VNIC_FNIC_LINK_DOWN_TIMEOUT_MAX, |
| c->link_down_timeout); |
| |
| c->port_down_timeout = |
| min_t(u32, VNIC_FNIC_PORT_DOWN_TIMEOUT_MAX, |
| c->port_down_timeout); |
| |
| c->port_down_io_retries = |
| min_t(u32, VNIC_FNIC_PORT_DOWN_IO_RETRIES_MAX, |
| c->port_down_io_retries); |
| |
| c->luns_per_tgt = |
| min_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MAX, |
| max_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MIN, |
| c->luns_per_tgt)); |
| |
| c->intr_timer = min_t(u16, VNIC_INTR_TIMER_MAX, c->intr_timer); |
| c->intr_timer_type = c->intr_timer_type; |
| |
| shost_printk(KERN_INFO, fnic->lport->host, |
| "vNIC MAC addr %pM " |
| "wq/wq_copy/rq %d/%d/%d\n", |
| fnic->ctlr.ctl_src_addr, |
| c->wq_enet_desc_count, c->wq_copy_desc_count, |
| c->rq_desc_count); |
| shost_printk(KERN_INFO, fnic->lport->host, |
| "vNIC node wwn %llx port wwn %llx\n", |
| c->node_wwn, c->port_wwn); |
| shost_printk(KERN_INFO, fnic->lport->host, |
| "vNIC ed_tov %d ra_tov %d\n", |
| c->ed_tov, c->ra_tov); |
| shost_printk(KERN_INFO, fnic->lport->host, |
| "vNIC mtu %d intr timer %d\n", |
| c->maxdatafieldsize, c->intr_timer); |
| shost_printk(KERN_INFO, fnic->lport->host, |
| "vNIC flags 0x%x luns per tgt %d\n", |
| c->flags, c->luns_per_tgt); |
| shost_printk(KERN_INFO, fnic->lport->host, |
| "vNIC flogi_retries %d flogi timeout %d\n", |
| c->flogi_retries, c->flogi_timeout); |
| shost_printk(KERN_INFO, fnic->lport->host, |
| "vNIC plogi retries %d plogi timeout %d\n", |
| c->plogi_retries, c->plogi_timeout); |
| shost_printk(KERN_INFO, fnic->lport->host, |
| "vNIC io throttle count %d link dn timeout %d\n", |
| c->io_throttle_count, c->link_down_timeout); |
| shost_printk(KERN_INFO, fnic->lport->host, |
| "vNIC port dn io retries %d port dn timeout %d\n", |
| c->port_down_io_retries, c->port_down_timeout); |
| |
| return 0; |
| } |
| |
| int fnic_set_nic_config(struct fnic *fnic, 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(fnic->vdev, CMD_NIC_CFG, &a0, &a1, wait); |
| } |
| |
| void fnic_get_res_counts(struct fnic *fnic) |
| { |
| fnic->wq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_WQ); |
| fnic->raw_wq_count = fnic->wq_count - 1; |
| fnic->wq_copy_count = fnic->wq_count - fnic->raw_wq_count; |
| fnic->rq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_RQ); |
| fnic->cq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_CQ); |
| fnic->intr_count = vnic_dev_get_res_count(fnic->vdev, |
| RES_TYPE_INTR_CTRL); |
| } |
| |
| void fnic_free_vnic_resources(struct fnic *fnic) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < fnic->raw_wq_count; i++) |
| vnic_wq_free(&fnic->wq[i]); |
| |
| for (i = 0; i < fnic->wq_copy_count; i++) |
| vnic_wq_copy_free(&fnic->wq_copy[i]); |
| |
| for (i = 0; i < fnic->rq_count; i++) |
| vnic_rq_free(&fnic->rq[i]); |
| |
| for (i = 0; i < fnic->cq_count; i++) |
| vnic_cq_free(&fnic->cq[i]); |
| |
| for (i = 0; i < fnic->intr_count; i++) |
| vnic_intr_free(&fnic->intr[i]); |
| } |
| |
| int fnic_alloc_vnic_resources(struct fnic *fnic) |
| { |
| 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 i, cq_index; |
| unsigned int wq_copy_cq_desc_count; |
| int err; |
| |
| intr_mode = vnic_dev_get_intr_mode(fnic->vdev); |
| |
| shost_printk(KERN_INFO, fnic->lport->host, "vNIC interrupt mode: %s\n", |
| 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"); |
| |
| shost_printk(KERN_INFO, fnic->lport->host, "vNIC resources avail: " |
| "wq %d cp_wq %d raw_wq %d rq %d cq %d intr %d\n", |
| fnic->wq_count, fnic->wq_copy_count, fnic->raw_wq_count, |
| fnic->rq_count, fnic->cq_count, fnic->intr_count); |
| |
| /* Allocate Raw WQ used for FCS frames */ |
| for (i = 0; i < fnic->raw_wq_count; i++) { |
| err = vnic_wq_alloc(fnic->vdev, &fnic->wq[i], i, |
| fnic->config.wq_enet_desc_count, |
| sizeof(struct wq_enet_desc)); |
| if (err) |
| goto err_out_cleanup; |
| } |
| |
| /* Allocate Copy WQs used for SCSI IOs */ |
| for (i = 0; i < fnic->wq_copy_count; i++) { |
| err = vnic_wq_copy_alloc(fnic->vdev, &fnic->wq_copy[i], |
| (fnic->raw_wq_count + i), |
| fnic->config.wq_copy_desc_count, |
| sizeof(struct fcpio_host_req)); |
| if (err) |
| goto err_out_cleanup; |
| } |
| |
| /* RQ for receiving FCS frames */ |
| for (i = 0; i < fnic->rq_count; i++) { |
| err = vnic_rq_alloc(fnic->vdev, &fnic->rq[i], i, |
| fnic->config.rq_desc_count, |
| sizeof(struct rq_enet_desc)); |
| if (err) |
| goto err_out_cleanup; |
| } |
| |
| /* CQ for each RQ */ |
| for (i = 0; i < fnic->rq_count; i++) { |
| cq_index = i; |
| err = vnic_cq_alloc(fnic->vdev, |
| &fnic->cq[cq_index], cq_index, |
| fnic->config.rq_desc_count, |
| sizeof(struct cq_enet_rq_desc)); |
| if (err) |
| goto err_out_cleanup; |
| } |
| |
| /* CQ for each WQ */ |
| for (i = 0; i < fnic->raw_wq_count; i++) { |
| cq_index = fnic->rq_count + i; |
| err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index], cq_index, |
| fnic->config.wq_enet_desc_count, |
| sizeof(struct cq_enet_wq_desc)); |
| if (err) |
| goto err_out_cleanup; |
| } |
| |
| /* CQ for each COPY WQ */ |
| wq_copy_cq_desc_count = (fnic->config.wq_copy_desc_count * 3); |
| for (i = 0; i < fnic->wq_copy_count; i++) { |
| cq_index = fnic->raw_wq_count + fnic->rq_count + i; |
| err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index], |
| cq_index, |
| wq_copy_cq_desc_count, |
| sizeof(struct fcpio_fw_req)); |
| if (err) |
| goto err_out_cleanup; |
| } |
| |
| for (i = 0; i < fnic->intr_count; i++) { |
| err = vnic_intr_alloc(fnic->vdev, &fnic->intr[i], i); |
| if (err) |
| goto err_out_cleanup; |
| } |
| |
| fnic->legacy_pba = vnic_dev_get_res(fnic->vdev, |
| RES_TYPE_INTR_PBA_LEGACY, 0); |
| |
| if (!fnic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) { |
| shost_printk(KERN_ERR, fnic->lport->host, |
| "Failed to hook legacy pba resource\n"); |
| err = -ENODEV; |
| goto err_out_cleanup; |
| } |
| |
| /* |
| * Init RQ/WQ resources. |
| * |
| * RQ[0 to n-1] point to CQ[0 to n-1] |
| * WQ[0 to m-1] point to CQ[n to n+m-1] |
| * WQ_COPY[0 to k-1] points to CQ[n+m to n+m+k-1] |
| * |
| * Note for copy wq we always initialize with cq_index = 0 |
| * |
| * 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 = fnic->err_intr_offset; |
| break; |
| default: |
| error_interrupt_enable = 0; |
| error_interrupt_offset = 0; |
| break; |
| } |
| |
| for (i = 0; i < fnic->rq_count; i++) { |
| cq_index = i; |
| vnic_rq_init(&fnic->rq[i], |
| cq_index, |
| error_interrupt_enable, |
| error_interrupt_offset); |
| } |
| |
| for (i = 0; i < fnic->raw_wq_count; i++) { |
| cq_index = i + fnic->rq_count; |
| vnic_wq_init(&fnic->wq[i], |
| cq_index, |
| error_interrupt_enable, |
| error_interrupt_offset); |
| } |
| |
| for (i = 0; i < fnic->wq_copy_count; i++) { |
| vnic_wq_copy_init(&fnic->wq_copy[i], |
| 0 /* cq_index 0 - always */, |
| error_interrupt_enable, |
| error_interrupt_offset); |
| } |
| |
| for (i = 0; i < fnic->cq_count; i++) { |
| |
| switch (intr_mode) { |
| case VNIC_DEV_INTR_MODE_MSIX: |
| interrupt_offset = i; |
| break; |
| default: |
| interrupt_offset = 0; |
| break; |
| } |
| |
| vnic_cq_init(&fnic->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 < fnic->intr_count; i++) { |
| vnic_intr_init(&fnic->intr[i], |
| fnic->config.intr_timer, |
| fnic->config.intr_timer_type, |
| mask_on_assertion); |
| } |
| |
| /* init the stats memory by making the first call here */ |
| err = vnic_dev_stats_dump(fnic->vdev, &fnic->stats); |
| if (err) { |
| shost_printk(KERN_ERR, fnic->lport->host, |
| "vnic_dev_stats_dump failed - x%x\n", err); |
| goto err_out_cleanup; |
| } |
| |
| /* Clear LIF stats */ |
| vnic_dev_stats_clear(fnic->vdev); |
| |
| return 0; |
| |
| err_out_cleanup: |
| fnic_free_vnic_resources(fnic); |
| |
| return err; |
| } |