#include <linux/jiffies.h>
#include <linux/uaccess.h>
+#include <linux/mei.h>
#include "mei_dev.h"
-#include "hw.h"
-#include <linux/mei.h>
-#include "interface.h"
+#include "hbm.h"
+#include "hw-me.h"
+#include "client.h"
-const uuid_le mei_amthi_guid = UUID_LE(0x12f80028, 0xb4b7, 0x4b2d, 0xac,
- 0xa8, 0x46, 0xe0, 0xff, 0x65,
- 0x81, 0x4c);
+const uuid_le mei_amthif_guid = UUID_LE(0x12f80028, 0xb4b7, 0x4b2d,
+ 0xac, 0xa8, 0x46, 0xe0,
+ 0xff, 0x65, 0x81, 0x4c);
/**
* mei_amthif_reset_params - initializes mei device iamthif
}
/**
- * mei_amthif_host_init_ - mei initialization amthif client.
+ * mei_amthif_host_init - mei initialization amthif client.
*
* @dev: the device structure
*
*/
-void mei_amthif_host_init(struct mei_device *dev)
+int mei_amthif_host_init(struct mei_device *dev)
{
- int i;
+ struct mei_cl *cl = &dev->iamthif_cl;
unsigned char *msg_buf;
+ int ret, i;
+
+ dev->iamthif_state = MEI_IAMTHIF_IDLE;
- mei_cl_init(&dev->iamthif_cl, dev);
- dev->iamthif_cl.state = MEI_FILE_DISCONNECTED;
+ mei_cl_init(cl, dev);
- /* find ME amthi client */
- i = mei_me_cl_link(dev, &dev->iamthif_cl,
- &mei_amthi_guid, MEI_IAMTHIF_HOST_CLIENT_ID);
+ i = mei_me_cl_by_uuid(dev, &mei_amthif_guid);
if (i < 0) {
- dev_info(&dev->pdev->dev, "failed to find iamthif client.\n");
- return;
+ dev_info(&dev->pdev->dev, "amthif: failed to find the client\n");
+ return -ENOENT;
}
+ cl->me_client_id = dev->me_clients[i].client_id;
+
/* Assign iamthif_mtu to the value received from ME */
dev->iamthif_mtu = dev->me_clients[i].props.max_msg_length;
msg_buf = kcalloc(dev->iamthif_mtu,
sizeof(unsigned char), GFP_KERNEL);
if (!msg_buf) {
- dev_dbg(&dev->pdev->dev, "memory allocation for ME message buffer failed.\n");
- return;
+ dev_err(&dev->pdev->dev, "amthif: memory allocation for ME message buffer failed.\n");
+ return -ENOMEM;
}
dev->iamthif_msg_buf = msg_buf;
- if (mei_connect(dev, &dev->iamthif_cl)) {
- dev_dbg(&dev->pdev->dev, "Failed to connect to AMTHI client\n");
- dev->iamthif_cl.state = MEI_FILE_DISCONNECTED;
- dev->iamthif_cl.host_client_id = 0;
+ ret = mei_cl_link(cl, MEI_IAMTHIF_HOST_CLIENT_ID);
+
+ if (ret < 0) {
+ dev_err(&dev->pdev->dev, "amthif: failed link client\n");
+ return -ENOENT;
+ }
+
+ cl->state = MEI_FILE_CONNECTING;
+
+ if (mei_hbm_cl_connect_req(dev, cl)) {
+ dev_dbg(&dev->pdev->dev, "amthif: Failed to connect to ME client\n");
+ cl->state = MEI_FILE_DISCONNECTED;
+ cl->host_client_id = 0;
} else {
- dev->iamthif_cl.timer_count = MEI_CONNECT_TIMEOUT;
+ cl->timer_count = MEI_CONNECT_TIMEOUT;
}
+ return 0;
}
/**
i = mei_me_cl_by_id(dev, dev->iamthif_cl.me_client_id);
if (i < 0) {
- dev_dbg(&dev->pdev->dev, "amthi client not found.\n");
+ dev_dbg(&dev->pdev->dev, "amthif client not found.\n");
return -ENODEV;
}
- dev_dbg(&dev->pdev->dev, "checking amthi data\n");
+ dev_dbg(&dev->pdev->dev, "checking amthif data\n");
cb = mei_amthif_find_read_list_entry(dev, file);
/* Check for if we can block or not*/
return -EAGAIN;
- dev_dbg(&dev->pdev->dev, "waiting for amthi data\n");
+ dev_dbg(&dev->pdev->dev, "waiting for amthif data\n");
while (cb == NULL) {
/* unlock the Mutex */
mutex_unlock(&dev->device_lock);
}
- dev_dbg(&dev->pdev->dev, "Got amthi data\n");
+ dev_dbg(&dev->pdev->dev, "Got amthif data\n");
dev->iamthif_timer = 0;
if (cb) {
timeout = cb->read_time +
mei_secs_to_jiffies(MEI_IAMTHIF_READ_TIMER);
- dev_dbg(&dev->pdev->dev, "amthi timeout = %lud\n",
+ dev_dbg(&dev->pdev->dev, "amthif timeout = %lud\n",
timeout);
if (time_after(jiffies, timeout)) {
- dev_dbg(&dev->pdev->dev, "amthi Time out\n");
+ dev_dbg(&dev->pdev->dev, "amthif Time out\n");
/* 15 sec for the message has expired */
list_del(&cb->list);
rets = -ETIMEDOUT;
* remove message from deletion list
*/
- dev_dbg(&dev->pdev->dev, "amthi cb->response_buffer size - %d\n",
+ dev_dbg(&dev->pdev->dev, "amthif cb->response_buffer size - %d\n",
cb->response_buffer.size);
- dev_dbg(&dev->pdev->dev, "amthi cb->buf_idx - %lu\n", cb->buf_idx);
+ dev_dbg(&dev->pdev->dev, "amthif cb->buf_idx - %lu\n", cb->buf_idx);
/* length is being turncated to PAGE_SIZE, however,
* the buf_idx may point beyond */
}
}
free:
- dev_dbg(&dev->pdev->dev, "free amthi cb memory.\n");
+ dev_dbg(&dev->pdev->dev, "free amthif cb memory.\n");
*offset = 0;
mei_io_cb_free(cb);
out:
if (!dev || !cb)
return -ENODEV;
- dev_dbg(&dev->pdev->dev, "write data to amthi client.\n");
+ dev_dbg(&dev->pdev->dev, "write data to amthif client.\n");
dev->iamthif_state = MEI_IAMTHIF_WRITING;
dev->iamthif_current_cb = cb;
memcpy(dev->iamthif_msg_buf, cb->request_buffer.data,
cb->request_buffer.size);
- ret = mei_flow_ctrl_creds(dev, &dev->iamthif_cl);
+ ret = mei_cl_flow_ctrl_creds(&dev->iamthif_cl);
if (ret < 0)
return ret;
- if (ret && dev->mei_host_buffer_is_empty) {
+ if (ret && dev->hbuf_is_ready) {
ret = 0;
- dev->mei_host_buffer_is_empty = false;
- if (cb->request_buffer.size > mei_hbuf_max_data(dev)) {
- mei_hdr.length = mei_hbuf_max_data(dev);
+ dev->hbuf_is_ready = false;
+ if (cb->request_buffer.size > mei_hbuf_max_len(dev)) {
+ mei_hdr.length = mei_hbuf_max_len(dev);
mei_hdr.msg_complete = 0;
} else {
mei_hdr.length = cb->request_buffer.size;
mei_hdr.reserved = 0;
dev->iamthif_msg_buf_index += mei_hdr.length;
if (mei_write_message(dev, &mei_hdr,
- (unsigned char *)(dev->iamthif_msg_buf),
- mei_hdr.length))
+ (unsigned char *)dev->iamthif_msg_buf))
return -ENODEV;
if (mei_hdr.msg_complete) {
- if (mei_flow_ctrl_reduce(dev, &dev->iamthif_cl))
+ if (mei_cl_flow_ctrl_reduce(&dev->iamthif_cl))
return -ENODEV;
dev->iamthif_flow_control_pending = true;
dev->iamthif_state = MEI_IAMTHIF_FLOW_CONTROL;
- dev_dbg(&dev->pdev->dev, "add amthi cb to write waiting list\n");
+ dev_dbg(&dev->pdev->dev, "add amthif cb to write waiting list\n");
dev->iamthif_current_cb = cb;
dev->iamthif_file_object = cb->file_object;
list_add_tail(&cb->list, &dev->write_waiting_list.list);
} else {
- dev_dbg(&dev->pdev->dev, "message does not complete, so add amthi cb to write list.\n");
+ dev_dbg(&dev->pdev->dev, "message does not complete, so add amthif cb to write list.\n");
list_add_tail(&cb->list, &dev->write_list.list);
}
} else {
- if (!(dev->mei_host_buffer_is_empty))
+ if (!dev->hbuf_is_ready)
dev_dbg(&dev->pdev->dev, "host buffer is not empty");
dev_dbg(&dev->pdev->dev, "No flow control credentials, so add iamthif cb to write list.\n");
dev->iamthif_timer = 0;
dev->iamthif_file_object = NULL;
- dev_dbg(&dev->pdev->dev, "complete amthi cmd_list cb.\n");
+ dev_dbg(&dev->pdev->dev, "complete amthif cmd_list cb.\n");
list_for_each_entry_safe(pos, next, &dev->amthif_cmd_list.list, list) {
list_del(&pos->list);
status = mei_amthif_send_cmd(dev, pos);
if (status) {
dev_dbg(&dev->pdev->dev,
- "amthi write failed status = %d\n",
+ "amthif write failed status = %d\n",
status);
return;
}
if (dev->iamthif_state == MEI_IAMTHIF_READ_COMPLETE &&
dev->iamthif_file_object == file) {
mask |= (POLLIN | POLLRDNORM);
- dev_dbg(&dev->pdev->dev, "run next amthi cb\n");
+ dev_dbg(&dev->pdev->dev, "run next amthif cb\n");
mei_amthif_run_next_cmd(dev);
}
return mask;
/**
- * mei_amthif_irq_process_completed - processes completed iamthif operation.
+ * mei_amthif_irq_write_completed - processes completed iamthif operation.
*
* @dev: the device structure.
* @slots: free slots.
int mei_amthif_irq_write_complete(struct mei_device *dev, s32 *slots,
struct mei_cl_cb *cb, struct mei_cl_cb *cmpl_list)
{
- struct mei_msg_hdr *mei_hdr;
+ struct mei_msg_hdr mei_hdr;
struct mei_cl *cl = cb->cl;
size_t len = dev->iamthif_msg_buf_size - dev->iamthif_msg_buf_index;
- size_t msg_slots = mei_data2slots(len);
+ u32 msg_slots = mei_data2slots(len);
- 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;
- mei_hdr->reserved = 0;
+ mei_hdr.host_addr = cl->host_client_id;
+ mei_hdr.me_addr = cl->me_client_id;
+ mei_hdr.reserved = 0;
if (*slots >= msg_slots) {
- mei_hdr->length = len;
- mei_hdr->msg_complete = 1;
+ 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);
- mei_hdr->length = len;
- mei_hdr->msg_complete = 0;
+ mei_hdr.length = len;
+ mei_hdr.msg_complete = 0;
} else {
/* wait for next time the host buffer is empty */
return 0;
}
- dev_dbg(&dev->pdev->dev, "msg: len = %d complete = %d\n",
- mei_hdr->length, mei_hdr->msg_complete);
+ dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(&mei_hdr));
*slots -= msg_slots;
- if (mei_write_message(dev, mei_hdr,
- dev->iamthif_msg_buf + dev->iamthif_msg_buf_index,
- mei_hdr->length)) {
+ if (mei_write_message(dev, &mei_hdr,
+ dev->iamthif_msg_buf + dev->iamthif_msg_buf_index)) {
dev->iamthif_state = MEI_IAMTHIF_IDLE;
cl->status = -ENODEV;
list_del(&cb->list);
return -ENODEV;
}
- if (mei_flow_ctrl_reduce(dev, cl))
+ if (mei_cl_flow_ctrl_reduce(cl))
return -ENODEV;
- dev->iamthif_msg_buf_index += mei_hdr->length;
+ dev->iamthif_msg_buf_index += mei_hdr.length;
cl->status = 0;
- if (mei_hdr->msg_complete) {
+ if (mei_hdr.msg_complete) {
dev->iamthif_state = MEI_IAMTHIF_FLOW_CONTROL;
dev->iamthif_flow_control_pending = true;
- /* save iamthif cb sent to amthi client */
+ /* save iamthif cb sent to amthif client */
cb->buf_idx = dev->iamthif_msg_buf_index;
dev->iamthif_current_cb = cb;
/**
* mei_amthif_irq_read_message - read routine after ISR to
- * handle the read amthi message
+ * handle the read amthif message
*
- * @complete_list: An instance of our list structure
* @dev: the device structure
- * @mei_hdr: header of amthi message
+ * @mei_hdr: header of amthif message
+ * @complete_list: An instance of our list structure
*
* returns 0 on success, <0 on failure.
*/
-int mei_amthif_irq_read_message(struct mei_cl_cb *complete_list,
- struct mei_device *dev, struct mei_msg_hdr *mei_hdr)
+int mei_amthif_irq_read_msg(struct mei_device *dev,
+ struct mei_msg_hdr *mei_hdr,
+ struct mei_cl_cb *complete_list)
{
struct mei_cl_cb *cb;
unsigned char *buffer;
if (!mei_hdr->msg_complete)
return 0;
- dev_dbg(&dev->pdev->dev,
- "amthi_message_buffer_index =%d\n",
+ dev_dbg(&dev->pdev->dev, "amthif_message_buffer_index =%d\n",
mei_hdr->length);
- dev_dbg(&dev->pdev->dev, "completed amthi read.\n ");
+ dev_dbg(&dev->pdev->dev, "completed amthif read.\n ");
if (!dev->iamthif_current_cb)
return -ENODEV;
cb->read_time = jiffies;
if (dev->iamthif_ioctl && cb->cl == &dev->iamthif_cl) {
/* found the iamthif cb */
- dev_dbg(&dev->pdev->dev, "complete the amthi read cb.\n ");
- dev_dbg(&dev->pdev->dev, "add the amthi read cb to complete.\n ");
+ dev_dbg(&dev->pdev->dev, "complete the amthif read cb.\n ");
+ dev_dbg(&dev->pdev->dev, "add the amthif read cb to complete.\n ");
list_add_tail(&cb->list, &complete_list->list);
}
return 0;
*/
int mei_amthif_irq_read(struct mei_device *dev, s32 *slots)
{
+ u32 msg_slots = mei_data2slots(sizeof(struct hbm_flow_control));
- if (((*slots) * sizeof(u32)) < (sizeof(struct mei_msg_hdr)
- + sizeof(struct hbm_flow_control))) {
+ if (*slots < msg_slots)
return -EMSGSIZE;
- }
- *slots -= mei_data2slots(sizeof(struct hbm_flow_control));
- if (mei_send_flow_control(dev, &dev->iamthif_cl)) {
+
+ *slots -= msg_slots;
+
+ if (mei_hbm_cl_flow_control_req(dev, &dev->iamthif_cl)) {
dev_dbg(&dev->pdev->dev, "iamthif flow control failed\n");
return -EIO;
}
dev->iamthif_msg_buf_index = 0;
dev->iamthif_msg_buf_size = 0;
dev->iamthif_stall_timer = MEI_IAMTHIF_STALL_TIMER;
- dev->mei_host_buffer_is_empty = mei_hbuf_is_empty(dev);
+ dev->hbuf_is_ready = mei_hbuf_is_ready(dev);
return 0;
}
dev->iamthif_msg_buf,
dev->iamthif_msg_buf_index);
list_add_tail(&cb->list, &dev->amthif_rd_complete_list.list);
- dev_dbg(&dev->pdev->dev, "amthi read completed\n");
+ dev_dbg(&dev->pdev->dev, "amthif read completed\n");
dev->iamthif_timer = jiffies;
dev_dbg(&dev->pdev->dev, "dev->iamthif_timer = %ld\n",
dev->iamthif_timer);
mei_amthif_run_next_cmd(dev);
}
- dev_dbg(&dev->pdev->dev, "completing amthi call back.\n");
+ dev_dbg(&dev->pdev->dev, "completing amthif call back.\n");
wake_up_interruptible(&dev->iamthif_cl.wait);
}
if (dev->iamthif_current_cb == cb_pos) {
dev->iamthif_current_cb = NULL;
/* send flow control to iamthif client */
- mei_send_flow_control(dev, &dev->iamthif_cl);
+ mei_hbm_cl_flow_control_req(dev,
+ &dev->iamthif_cl);
}
/* free all allocated buffers */
mei_io_cb_free(cb_pos);
/**
* mei_amthif_release - the release function
*
-* @inode: pointer to inode structure
+* @dev: device structure
* @file: pointer to file structure
*
* returns 0 on success, <0 on error
if (dev->iamthif_file_object == file &&
dev->iamthif_state != MEI_IAMTHIF_IDLE) {
- dev_dbg(&dev->pdev->dev, "amthi canceled iamthif state %d\n",
+ dev_dbg(&dev->pdev->dev, "amthif canceled iamthif state %d\n",
dev->iamthif_state);
dev->iamthif_canceled = true;
if (dev->iamthif_state == MEI_IAMTHIF_READ_COMPLETE) {
- dev_dbg(&dev->pdev->dev, "run next amthi iamthif cb\n");
+ dev_dbg(&dev->pdev->dev, "run next amthif iamthif cb\n");
mei_amthif_run_next_cmd(dev);
}
}
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