diff options
Diffstat (limited to 'drivers/misc/mei/init.c')
-rw-r--r-- | drivers/misc/mei/init.c | 107 |
1 files changed, 55 insertions, 52 deletions
diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index 006929222481..7901d076c127 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -15,7 +15,6 @@ */ #include <linux/export.h> -#include <linux/pci.h> #include <linux/sched.h> #include <linux/wait.h> #include <linux/delay.h> @@ -43,13 +42,23 @@ const char *mei_dev_state_str(int state) #undef MEI_DEV_STATE } +const char *mei_pg_state_str(enum mei_pg_state state) +{ +#define MEI_PG_STATE(state) case MEI_PG_##state: return #state + switch (state) { + MEI_PG_STATE(OFF); + MEI_PG_STATE(ON); + default: + return "unknown"; + } +#undef MEI_PG_STATE +} + /** - * mei_cancel_work. Cancel mei background jobs + * mei_cancel_work - Cancel mei background jobs * * @dev: the device structure - * - * returns 0 on success or < 0 if the reset hasn't succeeded */ void mei_cancel_work(struct mei_device *dev) { @@ -64,6 +73,8 @@ EXPORT_SYMBOL_GPL(mei_cancel_work); * mei_reset - resets host and fw. * * @dev: the device structure + * + * Return: 0 on success or < 0 if the reset hasn't succeeded */ int mei_reset(struct mei_device *dev) { @@ -76,8 +87,9 @@ int mei_reset(struct mei_device *dev) state != MEI_DEV_POWER_DOWN && state != MEI_DEV_POWER_UP) { struct mei_fw_status fw_status; + mei_fw_status(dev, &fw_status); - dev_warn(&dev->pdev->dev, + dev_warn(dev->dev, "unexpected reset: dev_state = %s " FW_STS_FMT "\n", mei_dev_state_str(state), FW_STS_PRM(fw_status)); } @@ -95,7 +107,7 @@ int mei_reset(struct mei_device *dev) dev->reset_count++; if (dev->reset_count > MEI_MAX_CONSEC_RESET) { - dev_err(&dev->pdev->dev, "reset: reached maximal consecutive resets: disabling the device\n"); + dev_err(dev->dev, "reset: reached maximal consecutive resets: disabling the device\n"); dev->dev_state = MEI_DEV_DISABLED; return -ENODEV; } @@ -116,7 +128,7 @@ int mei_reset(struct mei_device *dev) mei_cl_all_wakeup(dev); /* remove entry if already in list */ - dev_dbg(&dev->pdev->dev, "remove iamthif and wd from the file list.\n"); + dev_dbg(dev->dev, "remove iamthif and wd from the file list.\n"); mei_cl_unlink(&dev->wd_cl); mei_cl_unlink(&dev->iamthif_cl); mei_amthif_reset_params(dev); @@ -128,28 +140,28 @@ int mei_reset(struct mei_device *dev) dev->wd_pending = false; if (ret) { - dev_err(&dev->pdev->dev, "hw_reset failed ret = %d\n", ret); + dev_err(dev->dev, "hw_reset failed ret = %d\n", ret); return ret; } if (state == MEI_DEV_POWER_DOWN) { - dev_dbg(&dev->pdev->dev, "powering down: end of reset\n"); + dev_dbg(dev->dev, "powering down: end of reset\n"); dev->dev_state = MEI_DEV_DISABLED; return 0; } ret = mei_hw_start(dev); if (ret) { - dev_err(&dev->pdev->dev, "hw_start failed ret = %d\n", ret); + dev_err(dev->dev, "hw_start failed ret = %d\n", ret); return ret; } - dev_dbg(&dev->pdev->dev, "link is established start sending messages.\n"); + dev_dbg(dev->dev, "link is established start sending messages.\n"); dev->dev_state = MEI_DEV_INIT_CLIENTS; ret = mei_hbm_start_req(dev); if (ret) { - dev_err(&dev->pdev->dev, "hbm_start failed ret = %d\n", ret); + dev_err(dev->dev, "hbm_start failed ret = %d\n", ret); dev->dev_state = MEI_DEV_RESETTING; return ret; } @@ -163,11 +175,12 @@ EXPORT_SYMBOL_GPL(mei_reset); * * @dev: the device structure * - * returns 0 on success, <0 on failure. + * Return: 0 on success, <0 on failure. */ int mei_start(struct mei_device *dev) { int ret; + mutex_lock(&dev->device_lock); /* acknowledge interrupt and stop interrupts */ @@ -175,7 +188,7 @@ int mei_start(struct mei_device *dev) mei_hw_config(dev); - dev_dbg(&dev->pdev->dev, "reset in start the mei device.\n"); + dev_dbg(dev->dev, "reset in start the mei device.\n"); dev->reset_count = 0; do { @@ -183,43 +196,43 @@ int mei_start(struct mei_device *dev) ret = mei_reset(dev); if (ret == -ENODEV || dev->dev_state == MEI_DEV_DISABLED) { - dev_err(&dev->pdev->dev, "reset failed ret = %d", ret); + dev_err(dev->dev, "reset failed ret = %d", ret); goto err; } } while (ret); /* we cannot start the device w/o hbm start message completed */ if (dev->dev_state == MEI_DEV_DISABLED) { - dev_err(&dev->pdev->dev, "reset failed"); + dev_err(dev->dev, "reset failed"); goto err; } if (mei_hbm_start_wait(dev)) { - dev_err(&dev->pdev->dev, "HBM haven't started"); + dev_err(dev->dev, "HBM haven't started"); goto err; } if (!mei_host_is_ready(dev)) { - dev_err(&dev->pdev->dev, "host is not ready.\n"); + dev_err(dev->dev, "host is not ready.\n"); goto err; } if (!mei_hw_is_ready(dev)) { - dev_err(&dev->pdev->dev, "ME is not ready.\n"); + dev_err(dev->dev, "ME is not ready.\n"); goto err; } if (!mei_hbm_version_is_supported(dev)) { - dev_dbg(&dev->pdev->dev, "MEI start failed.\n"); + dev_dbg(dev->dev, "MEI start failed.\n"); goto err; } - dev_dbg(&dev->pdev->dev, "link layer has been established.\n"); + dev_dbg(dev->dev, "link layer has been established.\n"); mutex_unlock(&dev->device_lock); return 0; err: - dev_err(&dev->pdev->dev, "link layer initialization failed.\n"); + dev_err(dev->dev, "link layer initialization failed.\n"); dev->dev_state = MEI_DEV_DISABLED; mutex_unlock(&dev->device_lock); return -ENODEV; @@ -231,7 +244,7 @@ EXPORT_SYMBOL_GPL(mei_start); * * @dev: the device structure * - * returns 0 on success or -ENODEV if the restart hasn't succeeded + * Return: 0 on success or -ENODEV if the restart hasn't succeeded */ int mei_restart(struct mei_device *dev) { @@ -249,7 +262,7 @@ int mei_restart(struct mei_device *dev) mutex_unlock(&dev->device_lock); if (err == -ENODEV || dev->dev_state == MEI_DEV_DISABLED) { - dev_err(&dev->pdev->dev, "device disabled = %d\n", err); + dev_err(dev->dev, "device disabled = %d\n", err); return -ENODEV; } @@ -275,7 +288,7 @@ static void mei_reset_work(struct work_struct *work) mutex_unlock(&dev->device_lock); if (dev->dev_state == MEI_DEV_DISABLED) { - dev_err(&dev->pdev->dev, "device disabled = %d\n", ret); + dev_err(dev->dev, "device disabled = %d\n", ret); return; } @@ -286,7 +299,7 @@ static void mei_reset_work(struct work_struct *work) void mei_stop(struct mei_device *dev) { - dev_dbg(&dev->pdev->dev, "stopping the device.\n"); + dev_dbg(dev->dev, "stopping the device.\n"); mei_cancel_work(dev); @@ -312,7 +325,7 @@ EXPORT_SYMBOL_GPL(mei_stop); * * @dev: the device structure * - * returns true of there is no pending write + * Return: true of there is no pending write */ bool mei_write_is_idle(struct mei_device *dev) { @@ -320,7 +333,7 @@ bool mei_write_is_idle(struct mei_device *dev) list_empty(&dev->ctrl_wr_list.list) && list_empty(&dev->write_list.list)); - dev_dbg(&dev->pdev->dev, "write pg: is idle[%d] state=%s ctrl=%d write=%d\n", + dev_dbg(dev->dev, "write pg: is idle[%d] state=%s ctrl=%d write=%d\n", idle, mei_dev_state_str(dev->dev_state), list_empty(&dev->ctrl_wr_list.list), @@ -330,36 +343,25 @@ bool mei_write_is_idle(struct mei_device *dev) } EXPORT_SYMBOL_GPL(mei_write_is_idle); -int mei_fw_status(struct mei_device *dev, struct mei_fw_status *fw_status) -{ - int i; - const struct mei_fw_status *fw_src = &dev->cfg->fw_status; - - if (!fw_status) - return -EINVAL; - - fw_status->count = fw_src->count; - for (i = 0; i < fw_src->count && i < MEI_FW_STATUS_MAX; i++) { - int ret; - ret = pci_read_config_dword(dev->pdev, - fw_src->status[i], &fw_status->status[i]); - if (ret) - return ret; - } - - return 0; -} -EXPORT_SYMBOL_GPL(mei_fw_status); - -void mei_device_init(struct mei_device *dev, const struct mei_cfg *cfg) +/** + * mei_device_init -- initialize mei_device structure + * + * @dev: the mei device + * @device: the device structure + * @hw_ops: hw operations + */ +void mei_device_init(struct mei_device *dev, + struct device *device, + const struct mei_hw_ops *hw_ops) { /* setup our list array */ INIT_LIST_HEAD(&dev->file_list); INIT_LIST_HEAD(&dev->device_list); + INIT_LIST_HEAD(&dev->me_clients); mutex_init(&dev->device_lock); init_waitqueue_head(&dev->wait_hw_ready); init_waitqueue_head(&dev->wait_pg); - init_waitqueue_head(&dev->wait_recvd_msg); + init_waitqueue_head(&dev->wait_hbm_start); init_waitqueue_head(&dev->wait_stop_wd); dev->dev_state = MEI_DEV_INITIALIZING; dev->reset_count = 0; @@ -389,7 +391,8 @@ void mei_device_init(struct mei_device *dev, const struct mei_cfg *cfg) bitmap_set(dev->host_clients_map, 0, 1); dev->pg_event = MEI_PG_EVENT_IDLE; - dev->cfg = cfg; + dev->ops = hw_ops; + dev->dev = device; } EXPORT_SYMBOL_GPL(mei_device_init); |