Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Shannon Nelson | 3491 | 93.87% | 47 | 85.45% |
Allen Hubbe | 116 | 3.12% | 1 | 1.82% |
Brett Creeley | 89 | 2.39% | 3 | 5.45% |
Yuan Can | 15 | 0.40% | 1 | 1.82% |
Arnd Bergmann | 6 | 0.16% | 1 | 1.82% |
Justin Stitt | 1 | 0.03% | 1 | 1.82% |
Leon Romanovsky | 1 | 0.03% | 1 | 1.82% |
Total | 3719 | 55 |
// SPDX-License-Identifier: GPL-2.0 /* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ #include <linux/printk.h> #include <linux/dynamic_debug.h> #include <linux/module.h> #include <linux/netdevice.h> #include <linux/utsname.h> #include <generated/utsrelease.h> #include <linux/ctype.h> #include "ionic.h" #include "ionic_bus.h" #include "ionic_lif.h" #include "ionic_debugfs.h" MODULE_DESCRIPTION(IONIC_DRV_DESCRIPTION); MODULE_AUTHOR("Shannon Nelson <shannon.nelson@amd.com>"); MODULE_LICENSE("GPL"); static const char *ionic_error_to_str(enum ionic_status_code code) { switch (code) { case IONIC_RC_SUCCESS: return "IONIC_RC_SUCCESS"; case IONIC_RC_EVERSION: return "IONIC_RC_EVERSION"; case IONIC_RC_EOPCODE: return "IONIC_RC_EOPCODE"; case IONIC_RC_EIO: return "IONIC_RC_EIO"; case IONIC_RC_EPERM: return "IONIC_RC_EPERM"; case IONIC_RC_EQID: return "IONIC_RC_EQID"; case IONIC_RC_EQTYPE: return "IONIC_RC_EQTYPE"; case IONIC_RC_ENOENT: return "IONIC_RC_ENOENT"; case IONIC_RC_EINTR: return "IONIC_RC_EINTR"; case IONIC_RC_EAGAIN: return "IONIC_RC_EAGAIN"; case IONIC_RC_ENOMEM: return "IONIC_RC_ENOMEM"; case IONIC_RC_EFAULT: return "IONIC_RC_EFAULT"; case IONIC_RC_EBUSY: return "IONIC_RC_EBUSY"; case IONIC_RC_EEXIST: return "IONIC_RC_EEXIST"; case IONIC_RC_EINVAL: return "IONIC_RC_EINVAL"; case IONIC_RC_ENOSPC: return "IONIC_RC_ENOSPC"; case IONIC_RC_ERANGE: return "IONIC_RC_ERANGE"; case IONIC_RC_BAD_ADDR: return "IONIC_RC_BAD_ADDR"; case IONIC_RC_DEV_CMD: return "IONIC_RC_DEV_CMD"; case IONIC_RC_ENOSUPP: return "IONIC_RC_ENOSUPP"; case IONIC_RC_ERROR: return "IONIC_RC_ERROR"; case IONIC_RC_ERDMA: return "IONIC_RC_ERDMA"; case IONIC_RC_EBAD_FW: return "IONIC_RC_EBAD_FW"; default: return "IONIC_RC_UNKNOWN"; } } static int ionic_error_to_errno(enum ionic_status_code code) { switch (code) { case IONIC_RC_SUCCESS: return 0; case IONIC_RC_EVERSION: case IONIC_RC_EQTYPE: case IONIC_RC_EQID: case IONIC_RC_EINVAL: case IONIC_RC_ENOSUPP: return -EINVAL; case IONIC_RC_EPERM: return -EPERM; case IONIC_RC_ENOENT: return -ENOENT; case IONIC_RC_EAGAIN: return -EAGAIN; case IONIC_RC_ENOMEM: return -ENOMEM; case IONIC_RC_EFAULT: return -EFAULT; case IONIC_RC_EBUSY: return -EBUSY; case IONIC_RC_EEXIST: return -EEXIST; case IONIC_RC_ENOSPC: return -ENOSPC; case IONIC_RC_ERANGE: return -ERANGE; case IONIC_RC_BAD_ADDR: return -EFAULT; case IONIC_RC_EOPCODE: case IONIC_RC_EINTR: case IONIC_RC_DEV_CMD: case IONIC_RC_ERROR: case IONIC_RC_ERDMA: case IONIC_RC_EIO: default: return -EIO; } } static const char *ionic_opcode_to_str(enum ionic_cmd_opcode opcode) { switch (opcode) { case IONIC_CMD_NOP: return "IONIC_CMD_NOP"; case IONIC_CMD_INIT: return "IONIC_CMD_INIT"; case IONIC_CMD_RESET: return "IONIC_CMD_RESET"; case IONIC_CMD_IDENTIFY: return "IONIC_CMD_IDENTIFY"; case IONIC_CMD_GETATTR: return "IONIC_CMD_GETATTR"; case IONIC_CMD_SETATTR: return "IONIC_CMD_SETATTR"; case IONIC_CMD_PORT_IDENTIFY: return "IONIC_CMD_PORT_IDENTIFY"; case IONIC_CMD_PORT_INIT: return "IONIC_CMD_PORT_INIT"; case IONIC_CMD_PORT_RESET: return "IONIC_CMD_PORT_RESET"; case IONIC_CMD_PORT_GETATTR: return "IONIC_CMD_PORT_GETATTR"; case IONIC_CMD_PORT_SETATTR: return "IONIC_CMD_PORT_SETATTR"; case IONIC_CMD_LIF_INIT: return "IONIC_CMD_LIF_INIT"; case IONIC_CMD_LIF_RESET: return "IONIC_CMD_LIF_RESET"; case IONIC_CMD_LIF_IDENTIFY: return "IONIC_CMD_LIF_IDENTIFY"; case IONIC_CMD_LIF_SETATTR: return "IONIC_CMD_LIF_SETATTR"; case IONIC_CMD_LIF_GETATTR: return "IONIC_CMD_LIF_GETATTR"; case IONIC_CMD_LIF_SETPHC: return "IONIC_CMD_LIF_SETPHC"; case IONIC_CMD_RX_MODE_SET: return "IONIC_CMD_RX_MODE_SET"; case IONIC_CMD_RX_FILTER_ADD: return "IONIC_CMD_RX_FILTER_ADD"; case IONIC_CMD_RX_FILTER_DEL: return "IONIC_CMD_RX_FILTER_DEL"; case IONIC_CMD_Q_IDENTIFY: return "IONIC_CMD_Q_IDENTIFY"; case IONIC_CMD_Q_INIT: return "IONIC_CMD_Q_INIT"; case IONIC_CMD_Q_CONTROL: return "IONIC_CMD_Q_CONTROL"; case IONIC_CMD_RDMA_RESET_LIF: return "IONIC_CMD_RDMA_RESET_LIF"; case IONIC_CMD_RDMA_CREATE_EQ: return "IONIC_CMD_RDMA_CREATE_EQ"; case IONIC_CMD_RDMA_CREATE_CQ: return "IONIC_CMD_RDMA_CREATE_CQ"; case IONIC_CMD_RDMA_CREATE_ADMINQ: return "IONIC_CMD_RDMA_CREATE_ADMINQ"; case IONIC_CMD_FW_DOWNLOAD: return "IONIC_CMD_FW_DOWNLOAD"; case IONIC_CMD_FW_CONTROL: return "IONIC_CMD_FW_CONTROL"; case IONIC_CMD_FW_DOWNLOAD_V1: return "IONIC_CMD_FW_DOWNLOAD_V1"; case IONIC_CMD_FW_CONTROL_V1: return "IONIC_CMD_FW_CONTROL_V1"; case IONIC_CMD_VF_GETATTR: return "IONIC_CMD_VF_GETATTR"; case IONIC_CMD_VF_SETATTR: return "IONIC_CMD_VF_SETATTR"; default: return "DEVCMD_UNKNOWN"; } } static void ionic_adminq_flush(struct ionic_lif *lif) { struct ionic_admin_desc_info *desc_info; struct ionic_admin_cmd *desc; unsigned long irqflags; struct ionic_queue *q; spin_lock_irqsave(&lif->adminq_lock, irqflags); if (!lif->adminqcq) { spin_unlock_irqrestore(&lif->adminq_lock, irqflags); return; } q = &lif->adminqcq->q; while (q->tail_idx != q->head_idx) { desc = &q->adminq[q->tail_idx]; desc_info = &q->admin_info[q->tail_idx]; memset(desc, 0, sizeof(union ionic_adminq_cmd)); desc_info->ctx = NULL; q->tail_idx = (q->tail_idx + 1) & (q->num_descs - 1); } spin_unlock_irqrestore(&lif->adminq_lock, irqflags); } void ionic_adminq_netdev_err_print(struct ionic_lif *lif, u8 opcode, u8 status, int err) { const char *stat_str; stat_str = (err == -ETIMEDOUT) ? "TIMEOUT" : ionic_error_to_str(status); netdev_err(lif->netdev, "%s (%d) failed: %s (%d)\n", ionic_opcode_to_str(opcode), opcode, stat_str, err); } static int ionic_adminq_check_err(struct ionic_lif *lif, struct ionic_admin_ctx *ctx, const bool timeout, const bool do_msg) { int err = 0; if (ctx->comp.comp.status || timeout) { err = timeout ? -ETIMEDOUT : ionic_error_to_errno(ctx->comp.comp.status); if (do_msg) ionic_adminq_netdev_err_print(lif, ctx->cmd.cmd.opcode, ctx->comp.comp.status, err); if (timeout) ionic_adminq_flush(lif); } return err; } bool ionic_notifyq_service(struct ionic_cq *cq) { struct ionic_deferred_work *work; union ionic_notifyq_comp *comp; struct net_device *netdev; struct ionic_queue *q; struct ionic_lif *lif; u64 eid; comp = &((union ionic_notifyq_comp *)cq->base)[cq->tail_idx]; q = cq->bound_q; lif = q->admin_info[0].ctx; netdev = lif->netdev; eid = le64_to_cpu(comp->event.eid); /* Have we run out of new completions to process? */ if ((s64)(eid - lif->last_eid) <= 0) return false; lif->last_eid = eid; dev_dbg(lif->ionic->dev, "notifyq event:\n"); dynamic_hex_dump("event ", DUMP_PREFIX_OFFSET, 16, 1, comp, sizeof(*comp), true); switch (le16_to_cpu(comp->event.ecode)) { case IONIC_EVENT_LINK_CHANGE: ionic_link_status_check_request(lif, CAN_NOT_SLEEP); break; case IONIC_EVENT_RESET: if (lif->ionic->idev.fw_status_ready && !test_bit(IONIC_LIF_F_FW_RESET, lif->state) && !test_and_set_bit(IONIC_LIF_F_FW_STOPPING, lif->state)) { work = kzalloc(sizeof(*work), GFP_ATOMIC); if (!work) { netdev_err(lif->netdev, "Reset event dropped\n"); clear_bit(IONIC_LIF_F_FW_STOPPING, lif->state); } else { work->type = IONIC_DW_TYPE_LIF_RESET; ionic_lif_deferred_enqueue(lif, work); } } break; default: netdev_warn(netdev, "Notifyq event ecode=%d eid=%lld\n", comp->event.ecode, eid); break; } return true; } bool ionic_adminq_service(struct ionic_cq *cq) { struct ionic_admin_desc_info *desc_info; struct ionic_queue *q = cq->bound_q; struct ionic_admin_comp *comp; u16 index; comp = &((struct ionic_admin_comp *)cq->base)[cq->tail_idx]; if (!color_match(comp->color, cq->done_color)) return false; /* check for empty queue */ if (q->tail_idx == q->head_idx) return false; do { desc_info = &q->admin_info[q->tail_idx]; index = q->tail_idx; q->tail_idx = (q->tail_idx + 1) & (q->num_descs - 1); if (likely(desc_info->ctx)) { struct ionic_admin_ctx *ctx = desc_info->ctx; memcpy(&ctx->comp, comp, sizeof(*comp)); dev_dbg(q->dev, "comp admin queue command:\n"); dynamic_hex_dump("comp ", DUMP_PREFIX_OFFSET, 16, 1, &ctx->comp, sizeof(ctx->comp), true); complete_all(&ctx->work); desc_info->ctx = NULL; } } while (index != le16_to_cpu(comp->comp_index)); return true; } bool ionic_adminq_poke_doorbell(struct ionic_queue *q) { struct ionic_lif *lif = q->lif; unsigned long now, then, dif; unsigned long irqflags; spin_lock_irqsave(&lif->adminq_lock, irqflags); if (q->tail_idx == q->head_idx) { spin_unlock_irqrestore(&lif->adminq_lock, irqflags); return false; } now = READ_ONCE(jiffies); then = q->dbell_jiffies; dif = now - then; if (dif > q->dbell_deadline) { ionic_dbell_ring(q->lif->kern_dbpage, q->hw_type, q->dbval | q->head_idx); q->dbell_jiffies = now; } spin_unlock_irqrestore(&lif->adminq_lock, irqflags); return true; } int ionic_adminq_post(struct ionic_lif *lif, struct ionic_admin_ctx *ctx) { struct ionic_admin_desc_info *desc_info; struct ionic_admin_cmd *desc; unsigned long irqflags; struct ionic_queue *q; int err = 0; spin_lock_irqsave(&lif->adminq_lock, irqflags); if (!lif->adminqcq) { spin_unlock_irqrestore(&lif->adminq_lock, irqflags); return -EIO; } q = &lif->adminqcq->q; if (!ionic_q_has_space(q, 1)) { err = -ENOSPC; goto err_out; } err = ionic_heartbeat_check(lif->ionic); if (err) goto err_out; desc_info = &q->admin_info[q->head_idx]; desc_info->ctx = ctx; desc = &q->adminq[q->head_idx]; memcpy(desc, &ctx->cmd, sizeof(ctx->cmd)); dev_dbg(&lif->netdev->dev, "post admin queue command:\n"); dynamic_hex_dump("cmd ", DUMP_PREFIX_OFFSET, 16, 1, &ctx->cmd, sizeof(ctx->cmd), true); ionic_q_post(q, true); err_out: spin_unlock_irqrestore(&lif->adminq_lock, irqflags); return err; } int ionic_adminq_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx, const int err, const bool do_msg) { struct net_device *netdev = lif->netdev; unsigned long time_limit; unsigned long time_start; unsigned long time_done; unsigned long remaining; const char *name; name = ionic_opcode_to_str(ctx->cmd.cmd.opcode); if (err) { if (do_msg && !test_bit(IONIC_LIF_F_FW_RESET, lif->state)) netdev_err(netdev, "Posting of %s (%d) failed: %d\n", name, ctx->cmd.cmd.opcode, err); ctx->comp.comp.status = IONIC_RC_ERROR; return err; } time_start = jiffies; time_limit = time_start + HZ * (ulong)DEVCMD_TIMEOUT; do { remaining = wait_for_completion_timeout(&ctx->work, IONIC_ADMINQ_TIME_SLICE); /* check for done */ if (remaining) break; /* force a check of FW status and break out if FW reset */ ionic_heartbeat_check(lif->ionic); if ((test_bit(IONIC_LIF_F_FW_RESET, lif->state) && !lif->ionic->idev.fw_status_ready) || test_bit(IONIC_LIF_F_FW_STOPPING, lif->state)) { if (do_msg) netdev_warn(netdev, "%s (%d) interrupted, FW in reset\n", name, ctx->cmd.cmd.opcode); ctx->comp.comp.status = IONIC_RC_ERROR; return -ENXIO; } } while (time_before(jiffies, time_limit)); time_done = jiffies; dev_dbg(lif->ionic->dev, "%s: elapsed %d msecs\n", __func__, jiffies_to_msecs(time_done - time_start)); return ionic_adminq_check_err(lif, ctx, time_after_eq(time_done, time_limit), do_msg); } static int __ionic_adminq_post_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx, const bool do_msg) { int err; if (!ionic_is_fw_running(&lif->ionic->idev)) return 0; err = ionic_adminq_post(lif, ctx); return ionic_adminq_wait(lif, ctx, err, do_msg); } int ionic_adminq_post_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx) { return __ionic_adminq_post_wait(lif, ctx, true); } int ionic_adminq_post_wait_nomsg(struct ionic_lif *lif, struct ionic_admin_ctx *ctx) { return __ionic_adminq_post_wait(lif, ctx, false); } static void ionic_dev_cmd_clean(struct ionic *ionic) { struct ionic_dev *idev = &ionic->idev; if (!idev->dev_cmd_regs) return; iowrite32(0, &idev->dev_cmd_regs->doorbell); memset_io(&idev->dev_cmd_regs->cmd, 0, sizeof(idev->dev_cmd_regs->cmd)); } void ionic_dev_cmd_dev_err_print(struct ionic *ionic, u8 opcode, u8 status, int err) { const char *stat_str; stat_str = (err == -ETIMEDOUT) ? "TIMEOUT" : ionic_error_to_str(status); dev_err(ionic->dev, "DEV_CMD %s (%d) error, %s (%d) failed\n", ionic_opcode_to_str(opcode), opcode, stat_str, err); } static int __ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_seconds, const bool do_msg) { struct ionic_dev *idev = &ionic->idev; unsigned long start_time; unsigned long max_wait; unsigned long duration; int done = 0; bool fw_up; int opcode; int err; /* Wait for dev cmd to complete, retrying if we get EAGAIN, * but don't wait any longer than max_seconds. */ max_wait = jiffies + (max_seconds * HZ); try_again: opcode = idev->opcode; start_time = jiffies; for (fw_up = ionic_is_fw_running(idev); !done && fw_up && time_before(jiffies, max_wait); fw_up = ionic_is_fw_running(idev)) { done = ionic_dev_cmd_done(idev); if (done) break; usleep_range(100, 200); } duration = jiffies - start_time; dev_dbg(ionic->dev, "DEVCMD %s (%d) done=%d took %ld secs (%ld jiffies)\n", ionic_opcode_to_str(opcode), opcode, done, duration / HZ, duration); if (!done && !fw_up) { ionic_dev_cmd_clean(ionic); dev_warn(ionic->dev, "DEVCMD %s (%d) interrupted - FW is down\n", ionic_opcode_to_str(opcode), opcode); return -ENXIO; } if (!done && !time_before(jiffies, max_wait)) { ionic_dev_cmd_clean(ionic); dev_warn(ionic->dev, "DEVCMD %s (%d) timeout after %ld secs\n", ionic_opcode_to_str(opcode), opcode, max_seconds); return -ETIMEDOUT; } err = ionic_dev_cmd_status(&ionic->idev); if (err) { if (err == IONIC_RC_EAGAIN && time_before(jiffies, (max_wait - HZ))) { dev_dbg(ionic->dev, "DEV_CMD %s (%d), %s (%d) retrying...\n", ionic_opcode_to_str(opcode), opcode, ionic_error_to_str(err), err); iowrite32(0, &idev->dev_cmd_regs->done); msleep(1000); iowrite32(1, &idev->dev_cmd_regs->doorbell); goto try_again; } if (!(opcode == IONIC_CMD_FW_CONTROL && err == IONIC_RC_EAGAIN)) if (do_msg) ionic_dev_cmd_dev_err_print(ionic, opcode, err, ionic_error_to_errno(err)); return ionic_error_to_errno(err); } ionic_dev_cmd_clean(ionic); return 0; } int ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_seconds) { return __ionic_dev_cmd_wait(ionic, max_seconds, true); } int ionic_dev_cmd_wait_nomsg(struct ionic *ionic, unsigned long max_seconds) { return __ionic_dev_cmd_wait(ionic, max_seconds, false); } int ionic_setup(struct ionic *ionic) { int err; err = ionic_dev_setup(ionic); if (err) return err; ionic_reset(ionic); return 0; } int ionic_identify(struct ionic *ionic) { struct ionic_identity *ident = &ionic->ident; struct ionic_dev *idev = &ionic->idev; size_t sz; int err; memset(ident, 0, sizeof(*ident)); ident->drv.os_type = cpu_to_le32(IONIC_OS_TYPE_LINUX); strscpy(ident->drv.driver_ver_str, UTS_RELEASE, sizeof(ident->drv.driver_ver_str)); mutex_lock(&ionic->dev_cmd_lock); sz = min(sizeof(ident->drv), sizeof(idev->dev_cmd_regs->data)); memcpy_toio(&idev->dev_cmd_regs->data, &ident->drv, sz); ionic_dev_cmd_identify(idev, IONIC_DEV_IDENTITY_VERSION_2); err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); if (!err) { sz = min(sizeof(ident->dev), sizeof(idev->dev_cmd_regs->data)); memcpy_fromio(&ident->dev, &idev->dev_cmd_regs->data, sz); } mutex_unlock(&ionic->dev_cmd_lock); if (err) { dev_err(ionic->dev, "Cannot identify ionic: %d\n", err); goto err_out; } if (isprint(idev->dev_info.fw_version[0]) && isascii(idev->dev_info.fw_version[0])) dev_info(ionic->dev, "FW: %.*s\n", (int)(sizeof(idev->dev_info.fw_version) - 1), idev->dev_info.fw_version); else dev_info(ionic->dev, "FW: (invalid string) 0x%02x 0x%02x 0x%02x 0x%02x ...\n", (u8)idev->dev_info.fw_version[0], (u8)idev->dev_info.fw_version[1], (u8)idev->dev_info.fw_version[2], (u8)idev->dev_info.fw_version[3]); err = ionic_lif_identify(ionic, IONIC_LIF_TYPE_CLASSIC, &ionic->ident.lif); if (err) { dev_err(ionic->dev, "Cannot identify LIFs: %d\n", err); goto err_out; } return 0; err_out: return err; } int ionic_init(struct ionic *ionic) { struct ionic_dev *idev = &ionic->idev; int err; mutex_lock(&ionic->dev_cmd_lock); ionic_dev_cmd_init(idev); err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); mutex_unlock(&ionic->dev_cmd_lock); return err; } int ionic_reset(struct ionic *ionic) { struct ionic_dev *idev = &ionic->idev; int err; if (!ionic_is_fw_running(idev)) return 0; mutex_lock(&ionic->dev_cmd_lock); ionic_dev_cmd_reset(idev); err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); mutex_unlock(&ionic->dev_cmd_lock); return err; } int ionic_port_identify(struct ionic *ionic) { struct ionic_identity *ident = &ionic->ident; struct ionic_dev *idev = &ionic->idev; size_t sz; int err; mutex_lock(&ionic->dev_cmd_lock); ionic_dev_cmd_port_identify(idev); err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); if (!err) { sz = min(sizeof(ident->port), sizeof(idev->dev_cmd_regs->data)); memcpy_fromio(&ident->port, &idev->dev_cmd_regs->data, sz); } mutex_unlock(&ionic->dev_cmd_lock); return err; } int ionic_port_init(struct ionic *ionic) { struct ionic_identity *ident = &ionic->ident; struct ionic_dev *idev = &ionic->idev; size_t sz; int err; if (!idev->port_info) { idev->port_info_sz = ALIGN(sizeof(*idev->port_info), PAGE_SIZE); idev->port_info = dma_alloc_coherent(ionic->dev, idev->port_info_sz, &idev->port_info_pa, GFP_KERNEL); if (!idev->port_info) return -ENOMEM; } sz = min(sizeof(ident->port.config), sizeof(idev->dev_cmd_regs->data)); mutex_lock(&ionic->dev_cmd_lock); memcpy_toio(&idev->dev_cmd_regs->data, &ident->port.config, sz); ionic_dev_cmd_port_init(idev); err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); ionic_dev_cmd_port_state(&ionic->idev, IONIC_PORT_ADMIN_STATE_UP); ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); mutex_unlock(&ionic->dev_cmd_lock); if (err) { dev_err(ionic->dev, "Failed to init port\n"); dma_free_coherent(ionic->dev, idev->port_info_sz, idev->port_info, idev->port_info_pa); idev->port_info = NULL; idev->port_info_pa = 0; } return err; } int ionic_port_reset(struct ionic *ionic) { struct ionic_dev *idev = &ionic->idev; int err = 0; if (!idev->port_info) return 0; if (ionic_is_fw_running(idev)) { mutex_lock(&ionic->dev_cmd_lock); ionic_dev_cmd_port_reset(idev); err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); mutex_unlock(&ionic->dev_cmd_lock); } dma_free_coherent(ionic->dev, idev->port_info_sz, idev->port_info, idev->port_info_pa); idev->port_info = NULL; idev->port_info_pa = 0; return err; } static int __init ionic_init_module(void) { int ret; ionic_debugfs_create(); ret = ionic_bus_register_driver(); if (ret) ionic_debugfs_destroy(); return ret; } static void __exit ionic_cleanup_module(void) { ionic_bus_unregister_driver(); ionic_debugfs_destroy(); pr_info("%s removed\n", IONIC_DRV_NAME); } module_init(ionic_init_module); module_exit(ionic_cleanup_module);
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