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Diffstat (limited to 'drivers/misc/mei/init.c')
-rw-r--r--drivers/misc/mei/init.c107
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);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.