summaryrefslogtreecommitdiff
path: root/drivers/misc
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/mei/amthif.c19
-rw-r--r--drivers/misc/mei/client.c19
-rw-r--r--drivers/misc/mei/client.h4
-rw-r--r--drivers/misc/mei/hw-me.c2
-rw-r--r--drivers/misc/mei/hw-txe.c21
-rw-r--r--drivers/misc/mei/hw-txe.h1
-rw-r--r--drivers/misc/mei/interrupt.c78
-rw-r--r--drivers/misc/mei/mei_dev.h4
8 files changed, 68 insertions, 80 deletions
diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c
index e7ba8801d2b4..bff9a07f1af5 100644
--- a/drivers/misc/mei/amthif.c
+++ b/drivers/misc/mei/amthif.c
@@ -436,23 +436,23 @@ unsigned int mei_amthif_poll(struct mei_device *dev,
/**
- * mei_amthif_irq_write_completed - processes completed iamthif operation.
+ * mei_amthif_irq_write - write iamthif command in irq thread context.
*
* @dev: the device structure.
- * @slots: free slots.
* @cb_pos: callback block.
* @cl: private data of the file object.
* @cmpl_list: complete list.
*
* returns 0, OK; otherwise, error.
*/
-int mei_amthif_irq_write_complete(struct mei_cl *cl, struct mei_cl_cb *cb,
- s32 *slots, struct mei_cl_cb *cmpl_list)
+int mei_amthif_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
+ struct mei_cl_cb *cmpl_list)
{
struct mei_device *dev = cl->dev;
struct mei_msg_hdr mei_hdr;
size_t len = dev->iamthif_msg_buf_size - dev->iamthif_msg_buf_index;
u32 msg_slots = mei_data2slots(len);
+ int slots;
int rets;
rets = mei_cl_flow_ctrl_creds(cl);
@@ -469,13 +469,15 @@ int mei_amthif_irq_write_complete(struct mei_cl *cl, struct mei_cl_cb *cb,
mei_hdr.reserved = 0;
mei_hdr.internal = 0;
- if (*slots >= msg_slots) {
+ slots = mei_hbuf_empty_slots(dev);
+
+ if (slots >= msg_slots) {
mei_hdr.length = len;
mei_hdr.msg_complete = 1;
/* Split the message only if we can write the whole host buffer */
- } else if (*slots == dev->hbuf_depth) {
- msg_slots = *slots;
- len = (*slots * sizeof(u32)) - sizeof(struct mei_msg_hdr);
+ } else if (slots == dev->hbuf_depth) {
+ msg_slots = slots;
+ len = (slots * sizeof(u32)) - sizeof(struct mei_msg_hdr);
mei_hdr.length = len;
mei_hdr.msg_complete = 0;
} else {
@@ -485,7 +487,6 @@ int mei_amthif_irq_write_complete(struct mei_cl *cl, struct mei_cl_cb *cb,
dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(&mei_hdr));
- *slots -= msg_slots;
rets = mei_write_message(dev, &mei_hdr,
dev->iamthif_msg_buf + dev->iamthif_msg_buf_index);
if (rets) {
diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c
index 083179b75297..2b0f99955ba6 100644
--- a/drivers/misc/mei/client.c
+++ b/drivers/misc/mei/client.c
@@ -698,27 +698,26 @@ err:
}
/**
- * mei_cl_irq_write_complete - write a message to device
+ * mei_cl_irq_write - write a message to device
* from the interrupt thread context
*
* @cl: client
* @cb: callback block.
- * @slots: free slots.
* @cmpl_list: complete list.
*
* returns 0, OK; otherwise error.
*/
-int mei_cl_irq_write_complete(struct mei_cl *cl, struct mei_cl_cb *cb,
- s32 *slots, struct mei_cl_cb *cmpl_list)
+int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
+ struct mei_cl_cb *cmpl_list)
{
struct mei_device *dev;
struct mei_msg_data *buf;
struct mei_msg_hdr mei_hdr;
size_t len;
u32 msg_slots;
+ int slots;
int rets;
-
if (WARN_ON(!cl || !cl->dev))
return -ENODEV;
@@ -735,6 +734,7 @@ int mei_cl_irq_write_complete(struct mei_cl *cl, struct mei_cl_cb *cb,
return 0;
}
+ slots = mei_hbuf_empty_slots(dev);
len = buf->size - cb->buf_idx;
msg_slots = mei_data2slots(len);
@@ -743,13 +743,13 @@ int mei_cl_irq_write_complete(struct mei_cl *cl, struct mei_cl_cb *cb,
mei_hdr.reserved = 0;
mei_hdr.internal = cb->internal;
- if (*slots >= msg_slots) {
+ if (slots >= msg_slots) {
mei_hdr.length = len;
mei_hdr.msg_complete = 1;
/* Split the message only if we can write the whole host buffer */
- } else if (*slots == dev->hbuf_depth) {
- msg_slots = *slots;
- len = (*slots * sizeof(u32)) - sizeof(struct mei_msg_hdr);
+ } else if (slots == dev->hbuf_depth) {
+ msg_slots = slots;
+ len = (slots * sizeof(u32)) - sizeof(struct mei_msg_hdr);
mei_hdr.length = len;
mei_hdr.msg_complete = 0;
} else {
@@ -760,7 +760,6 @@ int mei_cl_irq_write_complete(struct mei_cl *cl, struct mei_cl_cb *cb,
cl_dbg(dev, cl, "buf: size = %d idx = %lu\n",
cb->request_buffer.size, cb->buf_idx);
- *slots -= msg_slots;
rets = mei_write_message(dev, &mei_hdr, buf->data + cb->buf_idx);
if (rets) {
cl->status = rets;
diff --git a/drivers/misc/mei/client.h b/drivers/misc/mei/client.h
index c8396e582f1c..c11b663358a4 100644
--- a/drivers/misc/mei/client.h
+++ b/drivers/misc/mei/client.h
@@ -102,8 +102,8 @@ int mei_cl_disconnect(struct mei_cl *cl);
int mei_cl_connect(struct mei_cl *cl, struct file *file);
int mei_cl_read_start(struct mei_cl *cl, size_t length);
int mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb, bool blocking);
-int mei_cl_irq_write_complete(struct mei_cl *cl, struct mei_cl_cb *cb,
- s32 *slots, struct mei_cl_cb *cmpl_list);
+int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
+ struct mei_cl_cb *cmpl_list);
void mei_cl_complete(struct mei_cl *cl, struct mei_cl_cb *cb);
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c
index b0c42d6182a6..84165cce57d2 100644
--- a/drivers/misc/mei/hw-me.c
+++ b/drivers/misc/mei/hw-me.c
@@ -354,7 +354,7 @@ static int mei_me_write_message(struct mei_device *dev,
dw_cnt = mei_data2slots(length);
if (empty_slots < 0 || dw_cnt > empty_slots)
- return -EIO;
+ return -EMSGSIZE;
mei_me_reg_write(hw, H_CB_WW, *((u32 *) header));
diff --git a/drivers/misc/mei/hw-txe.c b/drivers/misc/mei/hw-txe.c
index 8f5e4be9ebc2..f60182a52f96 100644
--- a/drivers/misc/mei/hw-txe.c
+++ b/drivers/misc/mei/hw-txe.c
@@ -566,7 +566,9 @@ static int mei_txe_write(struct mei_device *dev,
struct mei_txe_hw *hw = to_txe_hw(dev);
unsigned long rem;
unsigned long length;
+ int slots = dev->hbuf_depth;
u32 *reg_buf = (u32 *)buf;
+ u32 dw_cnt;
int i;
if (WARN_ON(!header || !buf))
@@ -576,11 +578,9 @@ static int mei_txe_write(struct mei_device *dev,
dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(header));
- if ((length + sizeof(struct mei_msg_hdr)) > PAYLOAD_SIZE) {
- dev_err(&dev->pdev->dev, "write length exceeded = %ld > %d\n",
- length + sizeof(struct mei_msg_hdr), PAYLOAD_SIZE);
- return -ERANGE;
- }
+ dw_cnt = mei_data2slots(length);
+ if (dw_cnt > slots)
+ return -EMSGSIZE;
if (WARN(!hw->aliveness, "txe write: aliveness not asserted\n"))
return -EAGAIN;
@@ -605,6 +605,9 @@ static int mei_txe_write(struct mei_device *dev,
mei_txe_input_payload_write(dev, i + 1, reg);
}
+ /* after each write the whole buffer is consumed */
+ hw->slots = 0;
+
/* Set Input-Doorbell */
mei_txe_input_doorbell_set(hw);
@@ -632,7 +635,8 @@ static size_t mei_txe_hbuf_max_len(const struct mei_device *dev)
*/
static int mei_txe_hbuf_empty_slots(struct mei_device *dev)
{
- return dev->hbuf_depth;
+ struct mei_txe_hw *hw = to_txe_hw(dev);
+ return hw->slots;
}
/**
@@ -978,11 +982,12 @@ irqreturn_t mei_txe_irq_thread_handler(int irq, void *dev_id)
}
}
/* Input Ready: Detection if host can write to SeC */
- if (test_and_clear_bit(TXE_INTR_IN_READY_BIT, &hw->intr_cause))
+ if (test_and_clear_bit(TXE_INTR_IN_READY_BIT, &hw->intr_cause)) {
dev->hbuf_is_ready = true;
+ hw->slots = dev->hbuf_depth;
+ }
if (hw->aliveness && dev->hbuf_is_ready) {
-
/* get the real register value */
dev->hbuf_is_ready = mei_hbuf_is_ready(dev);
rets = mei_irq_write_handler(dev, &complete_list);
diff --git a/drivers/misc/mei/hw-txe.h b/drivers/misc/mei/hw-txe.h
index fdb665f44d5d..0812d98633a4 100644
--- a/drivers/misc/mei/hw-txe.h
+++ b/drivers/misc/mei/hw-txe.h
@@ -46,6 +46,7 @@ struct mei_txe_hw {
void __iomem *mem_addr[NUM_OF_MEM_BARS];
u32 aliveness;
u32 readiness;
+ u32 slots;
wait_queue_head_t wait_aliveness;
bool recvd_aliveness;
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c
index aed03efa72f4..e6151e2dac48 100644
--- a/drivers/misc/mei/interrupt.c
+++ b/drivers/misc/mei/interrupt.c
@@ -165,25 +165,24 @@ static int mei_cl_irq_read_msg(struct mei_device *dev,
*
* @cl: client
* @cb: callback block.
- * @slots: free slots.
* @cmpl_list: complete list.
*
* returns 0, OK; otherwise, error.
*/
static int mei_cl_irq_disconnect_rsp(struct mei_cl *cl, struct mei_cl_cb *cb,
- s32 *slots, struct mei_cl_cb *cmpl_list)
+ struct mei_cl_cb *cmpl_list)
{
struct mei_device *dev = cl->dev;
+ u32 msg_slots;
+ int slots;
int ret;
- u32 msg_slots =
- mei_data2slots(sizeof(struct hbm_client_connect_response));
+ slots = mei_hbuf_empty_slots(dev);
+ msg_slots = mei_data2slots(sizeof(struct hbm_client_connect_response));
- if (*slots < msg_slots)
+ if (slots < msg_slots)
return -EMSGSIZE;
- *slots -= msg_slots;
-
ret = mei_hbm_cl_disconnect_rsp(dev, cl);
cl->state = MEI_FILE_DISCONNECTED;
@@ -201,24 +200,23 @@ static int mei_cl_irq_disconnect_rsp(struct mei_cl *cl, struct mei_cl_cb *cb,
*
* @cl: client
* @cb: callback block.
- * @slots: free slots.
* @cmpl_list: complete list.
*
* returns 0, OK; otherwise, error.
*/
static int mei_cl_irq_close(struct mei_cl *cl, struct mei_cl_cb *cb,
- s32 *slots, struct mei_cl_cb *cmpl_list)
+ struct mei_cl_cb *cmpl_list)
{
struct mei_device *dev = cl->dev;
+ u32 msg_slots;
+ int slots;
- u32 msg_slots =
- mei_data2slots(sizeof(struct hbm_client_connect_request));
+ msg_slots = mei_data2slots(sizeof(struct hbm_client_connect_request));
+ slots = mei_hbuf_empty_slots(dev);
- if (*slots < msg_slots)
+ if (slots < msg_slots)
return -EMSGSIZE;
- *slots -= msg_slots;
-
if (mei_hbm_cl_disconnect_req(dev, cl)) {
cl->status = 0;
cb->buf_idx = 0;
@@ -242,27 +240,23 @@ static int mei_cl_irq_close(struct mei_cl *cl, struct mei_cl_cb *cb,
*
* @cl: client
* @cb: callback block.
- * @slots: free slots.
* @cmpl_list: complete list.
*
* returns 0, OK; otherwise, error.
*/
static int mei_cl_irq_read(struct mei_cl *cl, struct mei_cl_cb *cb,
- s32 *slots, struct mei_cl_cb *cmpl_list)
+ struct mei_cl_cb *cmpl_list)
{
struct mei_device *dev = cl->dev;
- u32 msg_slots = mei_data2slots(sizeof(struct hbm_flow_control));
-
+ u32 msg_slots;
+ int slots;
int ret;
+ msg_slots = mei_data2slots(sizeof(struct hbm_flow_control));
+ slots = mei_hbuf_empty_slots(dev);
- if (*slots < msg_slots) {
- /* return the cancel routine */
- list_del(&cb->list);
+ if (slots < msg_slots)
return -EMSGSIZE;
- }
-
- *slots -= msg_slots;
ret = mei_hbm_cl_flow_control_req(dev, cl);
if (ret) {
@@ -283,30 +277,26 @@ static int mei_cl_irq_read(struct mei_cl *cl, struct mei_cl_cb *cb,
*
* @cl: client
* @cb: callback block.
- * @slots: free slots.
* @cmpl_list: complete list.
*
* returns 0, OK; otherwise, error.
*/
static int mei_cl_irq_connect(struct mei_cl *cl, struct mei_cl_cb *cb,
- s32 *slots, struct mei_cl_cb *cmpl_list)
+ struct mei_cl_cb *cmpl_list)
{
struct mei_device *dev = cl->dev;
+ u32 msg_slots;
+ int slots;
int ret;
- u32 msg_slots =
- mei_data2slots(sizeof(struct hbm_client_connect_request));
+ msg_slots = mei_data2slots(sizeof(struct hbm_client_connect_request));
+ slots = mei_hbuf_empty_slots(dev);
if (mei_cl_is_other_connecting(cl))
return 0;
- if (*slots < msg_slots) {
- /* return the cancel routine */
- list_del(&cb->list);
+ if (slots < msg_slots)
return -EMSGSIZE;
- }
-
- *slots -= msg_slots;
cl->state = MEI_FILE_CONNECTING;
@@ -494,13 +484,7 @@ int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list)
dev_dbg(&dev->pdev->dev, "wd send failed.\n");
else if (mei_cl_flow_ctrl_reduce(&dev->wd_cl))
return -ENODEV;
-
dev->wd_pending = false;
-
- if (dev->wd_state == MEI_WD_RUNNING)
- slots -= mei_data2slots(MEI_WD_START_MSG_SIZE);
- else
- slots -= mei_data2slots(MEI_WD_STOP_MSG_SIZE);
}
}
@@ -515,28 +499,28 @@ int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list)
switch (cb->fop_type) {
case MEI_FOP_CLOSE:
/* send disconnect message */
- ret = mei_cl_irq_close(cl, cb, &slots, cmpl_list);
+ ret = mei_cl_irq_close(cl, cb, cmpl_list);
if (ret)
return ret;
break;
case MEI_FOP_READ:
/* send flow control message */
- ret = mei_cl_irq_read(cl, cb, &slots, cmpl_list);
+ ret = mei_cl_irq_read(cl, cb, cmpl_list);
if (ret)
return ret;
break;
case MEI_FOP_CONNECT:
/* connect message */
- ret = mei_cl_irq_connect(cl, cb, &slots, cmpl_list);
+ ret = mei_cl_irq_connect(cl, cb, cmpl_list);
if (ret)
return ret;
break;
case MEI_FOP_DISCONNECT_RSP:
/* send disconnect resp */
- ret = mei_cl_irq_disconnect_rsp(cl, cb, &slots, cmpl_list);
+ ret = mei_cl_irq_disconnect_rsp(cl, cb, cmpl_list);
if (ret)
return ret;
default:
@@ -551,11 +535,9 @@ int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list)
if (cl == NULL)
continue;
if (cl == &dev->iamthif_cl)
- ret = mei_amthif_irq_write_complete(cl, cb,
- &slots, cmpl_list);
+ ret = mei_amthif_irq_write(cl, cb, cmpl_list);
else
- ret = mei_cl_irq_write_complete(cl, cb,
- &slots, cmpl_list);
+ ret = mei_cl_irq_write(cl, cb, cmpl_list);
if (ret)
return ret;
}
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index 52499bc5a068..36640b9d54c5 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -515,8 +515,8 @@ struct mei_cl_cb *mei_amthif_find_read_list_entry(struct mei_device *dev,
void mei_amthif_run_next_cmd(struct mei_device *dev);
-int mei_amthif_irq_write_complete(struct mei_cl *cl, struct mei_cl_cb *cb,
- s32 *slots, struct mei_cl_cb *cmpl_list);
+int mei_amthif_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
+ struct mei_cl_cb *cmpl_list);
void mei_amthif_complete(struct mei_device *dev, struct mei_cl_cb *cb);
int mei_amthif_irq_read_msg(struct mei_device *dev,
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-26 07:39:30 +0300