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-rw-r--r--drivers/misc/mei/bus-fixup.c14
-rw-r--r--drivers/misc/mei/bus.c34
-rw-r--r--drivers/misc/mei/client.c20
-rw-r--r--drivers/misc/mei/client.h2
-rw-r--r--drivers/misc/mei/hw-me-regs.h2
-rw-r--r--drivers/misc/mei/main.c2
-rw-r--r--drivers/misc/mei/mei_dev.h2
-rw-r--r--drivers/misc/mei/pci-me.c2
8 files changed, 62 insertions, 16 deletions
diff --git a/drivers/misc/mei/bus-fixup.c b/drivers/misc/mei/bus-fixup.c
index 71fbf0bc8453..6df7679d9739 100644
--- a/drivers/misc/mei/bus-fixup.c
+++ b/drivers/misc/mei/bus-fixup.c
@@ -188,17 +188,20 @@ static int mei_fwver(struct mei_cl_device *cldev)
return ret;
}
+#define GFX_MEMORY_READY_TIMEOUT 200 /* timeout in milliseconds */
+
static int mei_gfx_memory_ready(struct mei_cl_device *cldev)
{
struct mkhi_gfx_mem_ready req = {0};
- unsigned int mode = MEI_CL_IO_TX_INTERNAL;
+ unsigned int mode = MEI_CL_IO_TX_INTERNAL | MEI_CL_IO_TX_BLOCKING;
req.hdr.group_id = MKHI_GROUP_ID_GFX;
req.hdr.command = MKHI_GFX_MEMORY_READY_CMD_REQ;
req.flags = MKHI_GFX_MEM_READY_PXP_ALLOWED;
dev_dbg(&cldev->dev, "Sending memory ready command\n");
- return __mei_cl_send(cldev->cl, (u8 *)&req, sizeof(req), 0, mode);
+ return __mei_cl_send_timeout(cldev->cl, (u8 *)&req, sizeof(req), 0,
+ mode, GFX_MEMORY_READY_TIMEOUT);
}
static void mei_mkhi_fix(struct mei_cl_device *cldev)
@@ -263,12 +266,13 @@ static void mei_gsc_mkhi_fix_ver(struct mei_cl_device *cldev)
if (cldev->bus->pxp_mode == MEI_DEV_PXP_INIT) {
ret = mei_gfx_memory_ready(cldev);
- if (ret < 0)
+ if (ret < 0) {
dev_err(&cldev->dev, "memory ready command failed %d\n", ret);
- else
+ } else {
dev_dbg(&cldev->dev, "memory ready command sent\n");
+ cldev->bus->pxp_mode = MEI_DEV_PXP_SETUP;
+ }
/* we go to reset after that */
- cldev->bus->pxp_mode = MEI_DEV_PXP_SETUP;
goto out;
}
diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index 1fbe127ff633..a81b890c7ee6 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -35,6 +35,26 @@
ssize_t __mei_cl_send(struct mei_cl *cl, const u8 *buf, size_t length, u8 vtag,
unsigned int mode)
{
+ return __mei_cl_send_timeout(cl, buf, length, vtag, mode, MAX_SCHEDULE_TIMEOUT);
+}
+
+/**
+ * __mei_cl_send_timeout - internal client send (write)
+ *
+ * @cl: host client
+ * @buf: buffer to send
+ * @length: buffer length
+ * @vtag: virtual tag
+ * @mode: sending mode
+ * @timeout: send timeout in milliseconds.
+ * effective only for blocking writes: the MEI_CL_IO_TX_BLOCKING mode bit is set.
+ * set timeout to the MAX_SCHEDULE_TIMEOUT to maixum allowed wait.
+ *
+ * Return: written size bytes or < 0 on error
+ */
+ssize_t __mei_cl_send_timeout(struct mei_cl *cl, const u8 *buf, size_t length, u8 vtag,
+ unsigned int mode, unsigned long timeout)
+{
struct mei_device *bus;
struct mei_cl_cb *cb;
ssize_t rets;
@@ -108,7 +128,7 @@ ssize_t __mei_cl_send(struct mei_cl *cl, const u8 *buf, size_t length, u8 vtag,
cb->buf.size = 0;
}
- rets = mei_cl_write(cl, cb);
+ rets = mei_cl_write(cl, cb, timeout);
if (mode & MEI_CL_IO_SGL && rets == 0)
rets = length;
@@ -682,13 +702,15 @@ void *mei_cldev_dma_map(struct mei_cl_device *cldev, u8 buffer_id, size_t size)
if (cl->state == MEI_FILE_UNINITIALIZED) {
ret = mei_cl_link(cl);
if (ret)
- goto out;
+ goto notlinked;
/* update pointers */
cl->cldev = cldev;
}
ret = mei_cl_dma_alloc_and_map(cl, NULL, buffer_id, size);
-out:
+ if (ret)
+ mei_cl_unlink(cl);
+notlinked:
mutex_unlock(&bus->device_lock);
if (ret)
return ERR_PTR(ret);
@@ -738,7 +760,7 @@ int mei_cldev_enable(struct mei_cl_device *cldev)
if (cl->state == MEI_FILE_UNINITIALIZED) {
ret = mei_cl_link(cl);
if (ret)
- goto out;
+ goto notlinked;
/* update pointers */
cl->cldev = cldev;
}
@@ -765,6 +787,9 @@ int mei_cldev_enable(struct mei_cl_device *cldev)
}
out:
+ if (ret)
+ mei_cl_unlink(cl);
+notlinked:
mutex_unlock(&bus->device_lock);
return ret;
@@ -1257,7 +1282,6 @@ static void mei_cl_bus_dev_release(struct device *dev)
mei_cl_flush_queues(cldev->cl, NULL);
mei_me_cl_put(cldev->me_cl);
mei_dev_bus_put(cldev->bus);
- mei_cl_unlink(cldev->cl);
kfree(cldev->cl);
kfree(cldev);
}
diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c
index 6c8b71ae32c8..9ddb854b8155 100644
--- a/drivers/misc/mei/client.c
+++ b/drivers/misc/mei/client.c
@@ -1954,10 +1954,13 @@ err:
*
* @cl: host client
* @cb: write callback with filled data
+ * @timeout: send timeout in milliseconds.
+ * effective only for blocking writes: the cb->blocking is set.
+ * set timeout to the MAX_SCHEDULE_TIMEOUT to maixum allowed wait.
*
* Return: number of bytes sent on success, <0 on failure.
*/
-ssize_t mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb)
+ssize_t mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb, unsigned long timeout)
{
struct mei_device *dev;
struct mei_msg_data *buf;
@@ -2081,11 +2084,20 @@ out:
if (blocking && cl->writing_state != MEI_WRITE_COMPLETE) {
mutex_unlock(&dev->device_lock);
- rets = wait_event_interruptible(cl->tx_wait,
- cl->writing_state == MEI_WRITE_COMPLETE ||
- (!mei_cl_is_connected(cl)));
+ rets = wait_event_interruptible_timeout(cl->tx_wait,
+ cl->writing_state == MEI_WRITE_COMPLETE ||
+ (!mei_cl_is_connected(cl)),
+ msecs_to_jiffies(timeout));
mutex_lock(&dev->device_lock);
+ /* clean all queue on timeout as something fatal happened */
+ if (rets == 0) {
+ rets = -ETIME;
+ mei_io_tx_list_free_cl(&dev->write_list, cl, NULL);
+ mei_io_tx_list_free_cl(&dev->write_waiting_list, cl, NULL);
+ }
/* wait_event_interruptible returns -ERESTARTSYS */
+ if (rets > 0)
+ rets = 0;
if (rets) {
if (signal_pending(current))
rets = -EINTR;
diff --git a/drivers/misc/mei/client.h b/drivers/misc/mei/client.h
index 418056fb1489..9052860bcfe0 100644
--- a/drivers/misc/mei/client.h
+++ b/drivers/misc/mei/client.h
@@ -246,7 +246,7 @@ int mei_cl_connect(struct mei_cl *cl, struct mei_me_client *me_cl,
int mei_cl_irq_connect(struct mei_cl *cl, struct mei_cl_cb *cb,
struct list_head *cmpl_list);
int mei_cl_read_start(struct mei_cl *cl, size_t length, const struct file *fp);
-ssize_t mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb);
+ssize_t mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb, unsigned long timeout);
int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
struct list_head *cmpl_list);
diff --git a/drivers/misc/mei/hw-me-regs.h b/drivers/misc/mei/hw-me-regs.h
index 99966cd3e7d8..bdc65d50b945 100644
--- a/drivers/misc/mei/hw-me-regs.h
+++ b/drivers/misc/mei/hw-me-regs.h
@@ -111,6 +111,8 @@
#define MEI_DEV_ID_RPL_S 0x7A68 /* Raptor Lake Point S */
+#define MEI_DEV_ID_MTL_M 0x7E70 /* Meteor Lake Point M */
+
/*
* MEI HW Section
*/
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index 930887e7e38d..632d4ae21e46 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -383,7 +383,7 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf,
goto out;
}
- rets = mei_cl_write(cl, cb);
+ rets = mei_cl_write(cl, cb, MAX_SCHEDULE_TIMEOUT);
out:
mutex_unlock(&dev->device_lock);
return rets;
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index 8d8018428d9d..996b70a988be 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -379,6 +379,8 @@ void mei_cl_bus_rescan_work(struct work_struct *work);
void mei_cl_bus_dev_fixup(struct mei_cl_device *dev);
ssize_t __mei_cl_send(struct mei_cl *cl, const u8 *buf, size_t length, u8 vtag,
unsigned int mode);
+ssize_t __mei_cl_send_timeout(struct mei_cl *cl, const u8 *buf, size_t length, u8 vtag,
+ unsigned int mode, unsigned long timeout);
ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length, u8 *vtag,
unsigned int mode, unsigned long timeout);
bool mei_cl_bus_rx_event(struct mei_cl *cl);
diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c
index 704cd0caa172..5bf0d50d55a0 100644
--- a/drivers/misc/mei/pci-me.c
+++ b/drivers/misc/mei/pci-me.c
@@ -118,6 +118,8 @@ static const struct pci_device_id mei_me_pci_tbl[] = {
{MEI_PCI_DEVICE(MEI_DEV_ID_RPL_S, MEI_ME_PCH15_CFG)},
+ {MEI_PCI_DEVICE(MEI_DEV_ID_MTL_M, MEI_ME_PCH15_CFG)},
+
/* required last entry */
{0, }
};
generated by cgit v1.2.3 (git 2.39.0) at 2025-07-25 10:42:37 +0300