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Diffstat (limited to 'drivers/misc/mei/interrupt.c')
-rw-r--r--drivers/misc/mei/interrupt.c171
1 files changed, 72 insertions, 99 deletions
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c
index 93936f1b75eb..c6ffbbe5a6c0 100644
--- a/drivers/misc/mei/interrupt.c
+++ b/drivers/misc/mei/interrupt.c
@@ -267,8 +267,7 @@ static int _mei_irq_thread_iamthif_read(struct mei_device *dev, s32 *slots)
+ sizeof(struct hbm_flow_control))) {
return -EMSGSIZE;
}
- *slots -= (sizeof(struct mei_msg_hdr) +
- sizeof(struct hbm_flow_control) + 3) / 4;
+ *slots -= mei_data2slots(sizeof(struct hbm_flow_control));
if (mei_send_flow_control(dev, &dev->iamthif_cl)) {
dev_dbg(&dev->pdev->dev, "iamthif flow control failed\n");
return -EIO;
@@ -280,7 +279,7 @@ static int _mei_irq_thread_iamthif_read(struct mei_device *dev, s32 *slots)
dev->iamthif_msg_buf_index = 0;
dev->iamthif_msg_buf_size = 0;
dev->iamthif_stall_timer = IAMTHIF_STALL_TIMER;
- dev->mei_host_buffer_is_empty = mei_host_buffer_is_empty(dev);
+ dev->mei_host_buffer_is_empty = mei_hbuf_is_empty(dev);
return 0;
}
@@ -300,28 +299,25 @@ static int _mei_irq_thread_close(struct mei_device *dev, s32 *slots,
struct mei_cl *cl,
struct mei_io_list *cmpl_list)
{
- if ((*slots * sizeof(u32)) >= (sizeof(struct mei_msg_hdr) +
- sizeof(struct hbm_client_disconnect_request))) {
- *slots -= (sizeof(struct mei_msg_hdr) +
- sizeof(struct hbm_client_disconnect_request) + 3) / 4;
+ if ((*slots * sizeof(u32)) < (sizeof(struct mei_msg_hdr) +
+ sizeof(struct hbm_client_disconnect_request)))
+ return -EBADMSG;
- if (mei_disconnect(dev, cl)) {
- cl->status = 0;
- cb_pos->information = 0;
- list_move_tail(&cb_pos->cb_list,
- &cmpl_list->mei_cb.cb_list);
- return -EMSGSIZE;
- } else {
- cl->state = MEI_FILE_DISCONNECTING;
- cl->status = 0;
- cb_pos->information = 0;
- list_move_tail(&cb_pos->cb_list,
- &dev->ctrl_rd_list.mei_cb.cb_list);
- cl->timer_count = MEI_CONNECT_TIMEOUT;
- }
+ *slots -= mei_data2slots(sizeof(struct hbm_client_disconnect_request));
+
+ if (mei_disconnect(dev, cl)) {
+ cl->status = 0;
+ cb_pos->information = 0;
+ list_move_tail(&cb_pos->cb_list,
+ &cmpl_list->mei_cb.cb_list);
+ return -EMSGSIZE;
} else {
- /* return the cancel routine */
- return -EBADMSG;
+ cl->state = MEI_FILE_DISCONNECTING;
+ cl->status = 0;
+ cb_pos->information = 0;
+ list_move_tail(&cb_pos->cb_list,
+ &dev->ctrl_rd_list.mei_cb.cb_list);
+ cl->timer_count = MEI_CONNECT_TIMEOUT;
}
return 0;
@@ -575,10 +571,9 @@ static void mei_client_disconnect_request(struct mei_device *dev,
disconnect_req->me_addr);
cl_pos->state = MEI_FILE_DISCONNECTED;
cl_pos->timer_count = 0;
- if (cl_pos == &dev->wd_cl) {
- dev->wd_due_counter = 0;
+ if (cl_pos == &dev->wd_cl)
dev->wd_pending = false;
- } else if (cl_pos == &dev->iamthif_cl)
+ else if (cl_pos == &dev->iamthif_cl)
dev->iamthif_timer = 0;
/* prepare disconnect response */
@@ -835,15 +830,15 @@ static int _mei_irq_thread_read(struct mei_device *dev, s32 *slots,
struct mei_cl *cl,
struct mei_io_list *cmpl_list)
{
- if ((*slots * sizeof(u32)) >= (sizeof(struct mei_msg_hdr) +
+ if ((*slots * sizeof(u32)) < (sizeof(struct mei_msg_hdr) +
sizeof(struct hbm_flow_control))) {
/* return the cancel routine */
list_del(&cb_pos->cb_list);
return -EBADMSG;
}
- *slots -= (sizeof(struct mei_msg_hdr) +
- sizeof(struct hbm_flow_control) + 3) / 4;
+ *slots -= mei_data2slots(sizeof(struct hbm_flow_control));
+
if (mei_send_flow_control(dev, cl)) {
cl->status = -ENODEV;
cb_pos->information = 0;
@@ -872,27 +867,25 @@ static int _mei_irq_thread_ioctl(struct mei_device *dev, s32 *slots,
struct mei_cl *cl,
struct mei_io_list *cmpl_list)
{
- if ((*slots * sizeof(u32)) >= (sizeof(struct mei_msg_hdr) +
+ if ((*slots * sizeof(u32)) < (sizeof(struct mei_msg_hdr) +
sizeof(struct hbm_client_connect_request))) {
- cl->state = MEI_FILE_CONNECTING;
- *slots -= (sizeof(struct mei_msg_hdr) +
- sizeof(struct hbm_client_connect_request) + 3) / 4;
- if (mei_connect(dev, cl)) {
- cl->status = -ENODEV;
- cb_pos->information = 0;
- list_del(&cb_pos->cb_list);
- return -ENODEV;
- } else {
- list_move_tail(&cb_pos->cb_list,
- &dev->ctrl_rd_list.mei_cb.cb_list);
- cl->timer_count = MEI_CONNECT_TIMEOUT;
- }
- } else {
/* return the cancel routine */
list_del(&cb_pos->cb_list);
return -EBADMSG;
}
+ cl->state = MEI_FILE_CONNECTING;
+ *slots -= mei_data2slots(sizeof(struct hbm_client_connect_request));
+ if (mei_connect(dev, cl)) {
+ cl->status = -ENODEV;
+ cb_pos->information = 0;
+ list_del(&cb_pos->cb_list);
+ return -ENODEV;
+ } else {
+ list_move_tail(&cb_pos->cb_list,
+ &dev->ctrl_rd_list.mei_cb.cb_list);
+ cl->timer_count = MEI_CONNECT_TIMEOUT;
+ }
return 0;
}
@@ -932,8 +925,7 @@ static int _mei_irq_thread_cmpl(struct mei_device *dev, s32 *slots,
cb_pos->information);
dev_dbg(&dev->pdev->dev, "mei_hdr->length =%d\n",
mei_hdr->length);
- *slots -= (sizeof(struct mei_msg_hdr) +
- mei_hdr->length + 3) / 4;
+ *slots -= mei_data2slots(mei_hdr->length);
if (mei_write_message(dev, mei_hdr,
(unsigned char *)
(cb_pos->request_buffer.data +
@@ -951,7 +943,7 @@ static int _mei_irq_thread_cmpl(struct mei_device *dev, s32 *slots,
list_move_tail(&cb_pos->cb_list,
&dev->write_waiting_list.mei_cb.cb_list);
}
- } else if (*slots == ((dev->host_hw_state & H_CBD) >> 24)) {
+ } else if (*slots == dev->hbuf_depth) {
/* buffer is still empty */
mei_hdr = (struct mei_msg_hdr *) &dev->wr_msg_buf[0];
mei_hdr->host_addr = cl->host_client_id;
@@ -960,9 +952,7 @@ static int _mei_irq_thread_cmpl(struct mei_device *dev, s32 *slots,
(*slots * sizeof(u32)) - sizeof(struct mei_msg_hdr);
mei_hdr->msg_complete = 0;
mei_hdr->reserved = 0;
-
- (*slots) -= (sizeof(struct mei_msg_hdr) +
- mei_hdr->length + 3) / 4;
+ *slots -= mei_data2slots(mei_hdr->length);
if (mei_write_message(dev, mei_hdr,
(unsigned char *)
(cb_pos->request_buffer.data +
@@ -1021,8 +1011,7 @@ static int _mei_irq_thread_cmpl_iamthif(struct mei_device *dev, s32 *slots,
mei_hdr->msg_complete = 1;
mei_hdr->reserved = 0;
- *slots -= (sizeof(struct mei_msg_hdr) +
- mei_hdr->length + 3) / 4;
+ *slots -= mei_data2slots(mei_hdr->length);
if (mei_write_message(dev, mei_hdr,
(dev->iamthif_msg_buf +
@@ -1046,8 +1035,8 @@ static int _mei_irq_thread_cmpl_iamthif(struct mei_device *dev, s32 *slots,
&dev->write_waiting_list.mei_cb.cb_list);
}
- } else if (*slots == ((dev->host_hw_state & H_CBD) >> 24)) {
- /* buffer is still empty */
+ } else if (*slots == dev->hbuf_depth) {
+ /* buffer is still empty */
mei_hdr = (struct mei_msg_hdr *) &dev->wr_msg_buf[0];
mei_hdr->host_addr = cl->host_client_id;
mei_hdr->me_addr = cl->me_client_id;
@@ -1056,8 +1045,7 @@ static int _mei_irq_thread_cmpl_iamthif(struct mei_device *dev, s32 *slots,
mei_hdr->msg_complete = 0;
mei_hdr->reserved = 0;
- *slots -= (sizeof(struct mei_msg_hdr) +
- mei_hdr->length + 3) / 4;
+ *slots -= mei_data2slots(mei_hdr->length);
if (mei_write_message(dev, mei_hdr,
(dev->iamthif_msg_buf +
@@ -1199,17 +1187,19 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
struct mei_io_list *list;
int ret;
- if (!mei_host_buffer_is_empty(dev)) {
+ if (!mei_hbuf_is_empty(dev)) {
dev_dbg(&dev->pdev->dev, "host buffer is not empty.\n");
return 0;
}
- *slots = mei_count_empty_write_slots(dev);
+ *slots = mei_hbuf_empty_slots(dev);
+ if (*slots <= 0)
+ return -EMSGSIZE;
+
/* complete all waiting for write CB */
dev_dbg(&dev->pdev->dev, "complete all waiting for write cb.\n");
list = &dev->write_waiting_list;
- list_for_each_entry_safe(pos, next,
- &list->mei_cb.cb_list, cb_list) {
+ list_for_each_entry_safe(pos, next, &list->mei_cb.cb_list, cb_list) {
cl = (struct mei_cl *)pos->file_private;
if (cl == NULL)
continue;
@@ -1219,17 +1209,15 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
if (MEI_WRITING == cl->writing_state &&
(pos->major_file_operations == MEI_WRITE) &&
(cl != &dev->iamthif_cl)) {
- dev_dbg(&dev->pdev->dev,
- "MEI WRITE COMPLETE\n");
+ dev_dbg(&dev->pdev->dev, "MEI WRITE COMPLETE\n");
cl->writing_state = MEI_WRITE_COMPLETE;
list_add_tail(&pos->cb_list,
- &cmpl_list->mei_cb.cb_list);
+ &cmpl_list->mei_cb.cb_list);
}
if (cl == &dev->iamthif_cl) {
dev_dbg(&dev->pdev->dev, "check iamthif flow control.\n");
if (dev->iamthif_flow_control_pending) {
- ret = _mei_irq_thread_iamthif_read(
- dev, slots);
+ ret = _mei_irq_thread_iamthif_read(dev, slots);
if (ret)
return ret;
}
@@ -1254,25 +1242,18 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
}
if (dev->mei_state == MEI_ENABLED) {
if (dev->wd_pending &&
- mei_flow_ctrl_creds(dev, &dev->wd_cl) > 0) {
+ mei_flow_ctrl_creds(dev, &dev->wd_cl) > 0) {
if (mei_wd_send(dev))
dev_dbg(&dev->pdev->dev, "wd send failed.\n");
- else
- if (mei_flow_ctrl_reduce(dev, &dev->wd_cl))
- return -ENODEV;
+ else if (mei_flow_ctrl_reduce(dev, &dev->wd_cl))
+ return -ENODEV;
dev->wd_pending = false;
- if (dev->wd_timeout) {
- *slots -= (sizeof(struct mei_msg_hdr) +
- MEI_START_WD_DATA_SIZE + 3) / 4;
- dev->wd_due_counter = 2;
- } else {
- *slots -= (sizeof(struct mei_msg_hdr) +
- MEI_WD_PARAMS_SIZE + 3) / 4;
- dev->wd_due_counter = 0;
- }
-
+ if (dev->wd_timeout)
+ *slots -= mei_data2slots(MEI_START_WD_DATA_SIZE);
+ else
+ *slots -= mei_data2slots(MEI_START_WD_DATA_SIZE);
}
}
if (dev->stop)
@@ -1320,42 +1301,34 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
/* complete write list CB */
dev_dbg(&dev->pdev->dev, "complete write list cb.\n");
list_for_each_entry_safe(pos, next,
- &dev->write_list.mei_cb.cb_list, cb_list) {
+ &dev->write_list.mei_cb.cb_list, cb_list) {
cl = (struct mei_cl *)pos->file_private;
if (cl == NULL)
continue;
if (cl != &dev->iamthif_cl) {
- if (!mei_flow_ctrl_creds(dev, cl)) {
+ if (mei_flow_ctrl_creds(dev, cl) <= 0) {
dev_dbg(&dev->pdev->dev,
- "No flow control"
- " credentials for client"
- " %d, not sending.\n",
- cl->host_client_id);
+ "No flow control credentials for client %d, not sending.\n",
+ cl->host_client_id);
continue;
}
- ret = _mei_irq_thread_cmpl(dev, slots,
- pos,
- cl, cmpl_list);
+ ret = _mei_irq_thread_cmpl(dev, slots, pos,
+ cl, cmpl_list);
if (ret)
return ret;
} else if (cl == &dev->iamthif_cl) {
/* IAMTHIF IOCTL */
dev_dbg(&dev->pdev->dev, "complete amthi write cb.\n");
- if (!mei_flow_ctrl_creds(dev, cl)) {
+ if (mei_flow_ctrl_creds(dev, cl) <= 0) {
dev_dbg(&dev->pdev->dev,
- "No flow control"
- " credentials for amthi"
- " client %d.\n",
- cl->host_client_id);
+ "No flow control credentials for amthi client %d.\n",
+ cl->host_client_id);
continue;
}
- ret = _mei_irq_thread_cmpl_iamthif(dev,
- slots,
- pos,
- cl,
- cmpl_list);
+ ret = _mei_irq_thread_cmpl_iamthif(dev, slots, pos,
+ cl, cmpl_list);
if (ret)
return ret;
@@ -1555,7 +1528,7 @@ irqreturn_t mei_interrupt_thread_handler(int irq, void *dev_id)
end:
dev_dbg(&dev->pdev->dev, "end of bottom half function.\n");
dev->host_hw_state = mei_hcsr_read(dev);
- dev->mei_host_buffer_is_empty = mei_host_buffer_is_empty(dev);
+ dev->mei_host_buffer_is_empty = mei_hbuf_is_empty(dev);
bus_message_received = false;
if (dev->recvd_msg && waitqueue_active(&dev->wait_recvd_msg)) {
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-30 20:37:51 +0100