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authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-08 12:55:41 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-08 12:55:41 +0200
commitef0625b70dac9405ac9d9928cf767108041a9e51 (patch)
tree9b2a0ea588e23e477868f593f8f7397eedb71c2c /drivers/misc/mei
parentMerge tag 'compress-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/gi... (diff)
parentmei: mei_txe_fw_sts can be static (diff)
downloadlinux-ef0625b70dac9405ac9d9928cf767108041a9e51.tar.xz
linux-ef0625b70dac9405ac9d9928cf767108041a9e51.zip
Merge tag 'char-misc-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH: "Here's the big set of driver patches for char/misc drivers. Nothing major in here, the shortlog goes into the details. All have been in the linux-next tree for a while with no issues" * tag 'char-misc-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (80 commits) mei: mei_txe_fw_sts can be static mei: fix kernel-doc warnings mei: fix KDoc documentation formatting mei: drop me_client_presentation_num mei: trivial: fix errors in prints in comments mei: remove include to pci header from mei module files mei: push pci cfg structure me hw mei: remove the reference to pdev from mei_device mei: move fw_status back to hw ops handlers mei: get rid of most of the pci dependencies in mei mei: push all standard settings into mei_device_init mei: move mei_hbm_hdr function from hbm.h the hbm.c mei: kill error message for allocation failure mei: nfc: fix style warning mei: fix style warning: Missing a blank line after declarations mei: pg: fix cat and paste error in comments mei: debugfs: add single buffer indicator mei: debugfs: adjust print buffer mei: add hbm and pg state in devstate debugfs print Drivers: hv: vmbus: Enable interrupt driven flow control ...
Diffstat (limited to 'drivers/misc/mei')
-rw-r--r--drivers/misc/mei/amthif.c167
-rw-r--r--drivers/misc/mei/bus.c25
-rw-r--r--drivers/misc/mei/client.c237
-rw-r--r--drivers/misc/mei/client.h17
-rw-r--r--drivers/misc/mei/debugfs.c70
-rw-r--r--drivers/misc/mei/hbm.c567
-rw-r--r--drivers/misc/mei/hbm.h17
-rw-r--r--drivers/misc/mei/hw-me.c194
-rw-r--r--drivers/misc/mei/hw-me.h32
-rw-r--r--drivers/misc/mei/hw-txe.c252
-rw-r--r--drivers/misc/mei/hw-txe.h6
-rw-r--r--drivers/misc/mei/hw.h74
-rw-r--r--drivers/misc/mei/init.c107
-rw-r--r--drivers/misc/mei/interrupt.c96
-rw-r--r--drivers/misc/mei/main.c143
-rw-r--r--drivers/misc/mei/mei_dev.h279
-rw-r--r--drivers/misc/mei/nfc.c77
-rw-r--r--drivers/misc/mei/pci-me.c14
-rw-r--r--drivers/misc/mei/pci-txe.c13
-rw-r--r--drivers/misc/mei/wd.c59
20 files changed, 1409 insertions, 1037 deletions
diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c
index 0d6234db00fa..6cdce8477f57 100644
--- a/drivers/misc/mei/amthif.c
+++ b/drivers/misc/mei/amthif.c
@@ -20,7 +20,6 @@
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/aio.h>
-#include <linux/pci.h>
#include <linux/ioctl.h>
#include <linux/cdev.h>
#include <linux/list.h>
@@ -29,6 +28,7 @@
#include <linux/uuid.h>
#include <linux/jiffies.h>
#include <linux/uaccess.h>
+#include <linux/slab.h>
#include <linux/mei.h>
@@ -64,31 +64,32 @@ void mei_amthif_reset_params(struct mei_device *dev)
*
* @dev: the device structure
*
+ * Return: 0 on success, <0 on failure.
*/
int mei_amthif_host_init(struct mei_device *dev)
{
struct mei_cl *cl = &dev->iamthif_cl;
+ struct mei_me_client *me_cl;
unsigned char *msg_buf;
- int ret, i;
+ int ret;
dev->iamthif_state = MEI_IAMTHIF_IDLE;
mei_cl_init(cl, dev);
- i = mei_me_cl_by_uuid(dev, &mei_amthif_guid);
- if (i < 0) {
- dev_info(&dev->pdev->dev,
- "amthif: failed to find the client %d\n", i);
+ me_cl = mei_me_cl_by_uuid(dev, &mei_amthif_guid);
+ if (!me_cl) {
+ dev_info(dev->dev, "amthif: failed to find the client");
return -ENOTTY;
}
- cl->me_client_id = dev->me_clients[i].client_id;
+ cl->me_client_id = me_cl->client_id;
+ cl->cl_uuid = me_cl->props.protocol_name;
/* Assign iamthif_mtu to the value received from ME */
- dev->iamthif_mtu = dev->me_clients[i].props.max_msg_length;
- dev_dbg(&dev->pdev->dev, "IAMTHIF_MTU = %d\n",
- dev->me_clients[i].props.max_msg_length);
+ dev->iamthif_mtu = me_cl->props.max_msg_length;
+ dev_dbg(dev->dev, "IAMTHIF_MTU = %d\n", dev->iamthif_mtu);
kfree(dev->iamthif_msg_buf);
dev->iamthif_msg_buf = NULL;
@@ -96,17 +97,15 @@ int mei_amthif_host_init(struct mei_device *dev)
/* allocate storage for ME message buffer */
msg_buf = kcalloc(dev->iamthif_mtu,
sizeof(unsigned char), GFP_KERNEL);
- if (!msg_buf) {
- dev_err(&dev->pdev->dev, "amthif: memory allocation for ME message buffer failed.\n");
+ if (!msg_buf)
return -ENOMEM;
- }
dev->iamthif_msg_buf = msg_buf;
ret = mei_cl_link(cl, MEI_IAMTHIF_HOST_CLIENT_ID);
if (ret < 0) {
- dev_err(&dev->pdev->dev,
+ dev_err(dev->dev,
"amthif: failed link client %d\n", ret);
return ret;
}
@@ -124,18 +123,16 @@ int mei_amthif_host_init(struct mei_device *dev)
* @dev: the device structure
* @file: pointer to file object
*
- * returns returned a list entry on success, NULL on failure.
+ * Return: returned a list entry on success, NULL on failure.
*/
struct mei_cl_cb *mei_amthif_find_read_list_entry(struct mei_device *dev,
struct file *file)
{
struct mei_cl_cb *cb;
- list_for_each_entry(cb, &dev->amthif_rd_complete_list.list, list) {
- if (cb->cl && cb->cl == &dev->iamthif_cl &&
- cb->file_object == file)
+ list_for_each_entry(cb, &dev->amthif_rd_complete_list.list, list)
+ if (cb->file_object == file)
return cb;
- }
return NULL;
}
@@ -144,15 +141,14 @@ struct mei_cl_cb *mei_amthif_find_read_list_entry(struct mei_device *dev,
* mei_amthif_read - read data from AMTHIF client
*
* @dev: the device structure
- * @if_num: minor number
* @file: pointer to file object
- * @*ubuf: pointer to user data in user space
+ * @ubuf: pointer to user data in user space
* @length: data length to read
* @offset: data read offset
*
* Locking: called under "dev->device_lock" lock
*
- * returns
+ * Return:
* returned data length on success,
* zero if no data to read,
* negative on failure.
@@ -160,25 +156,19 @@ struct mei_cl_cb *mei_amthif_find_read_list_entry(struct mei_device *dev,
int mei_amthif_read(struct mei_device *dev, struct file *file,
char __user *ubuf, size_t length, loff_t *offset)
{
- int rets;
- int wait_ret;
- struct mei_cl_cb *cb = NULL;
struct mei_cl *cl = file->private_data;
+ struct mei_cl_cb *cb;
unsigned long timeout;
- int i;
+ int rets;
+ int wait_ret;
/* Only possible if we are in timeout */
- if (!cl || cl != &dev->iamthif_cl) {
- dev_dbg(&dev->pdev->dev, "bad file ext.\n");
+ if (!cl) {
+ dev_err(dev->dev, "bad file ext.\n");
return -ETIME;
}
- i = mei_me_cl_by_id(dev, dev->iamthif_cl.me_client_id);
- if (i < 0) {
- dev_dbg(&dev->pdev->dev, "amthif client not found.\n");
- return -ENOTTY;
- }
- dev_dbg(&dev->pdev->dev, "checking amthif data\n");
+ dev_dbg(dev->dev, "checking amthif data\n");
cb = mei_amthif_find_read_list_entry(dev, file);
/* Check for if we can block or not*/
@@ -186,7 +176,7 @@ int mei_amthif_read(struct mei_device *dev, struct file *file,
return -EAGAIN;
- dev_dbg(&dev->pdev->dev, "waiting for amthif data\n");
+ dev_dbg(dev->dev, "waiting for amthif data\n");
while (cb == NULL) {
/* unlock the Mutex */
mutex_unlock(&dev->device_lock);
@@ -200,21 +190,21 @@ int mei_amthif_read(struct mei_device *dev, struct file *file,
if (wait_ret)
return -ERESTARTSYS;
- dev_dbg(&dev->pdev->dev, "woke up from sleep\n");
+ dev_dbg(dev->dev, "woke up from sleep\n");
}
- dev_dbg(&dev->pdev->dev, "Got amthif data\n");
+ dev_dbg(dev->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, "amthif timeout = %lud\n",
+ dev_dbg(dev->dev, "amthif timeout = %lud\n",
timeout);
if (time_after(jiffies, timeout)) {
- dev_dbg(&dev->pdev->dev, "amthif Time out\n");
+ dev_dbg(dev->dev, "amthif Time out\n");
/* 15 sec for the message has expired */
list_del(&cb->list);
rets = -ETIME;
@@ -234,16 +224,16 @@ int mei_amthif_read(struct mei_device *dev, struct file *file,
* remove message from deletion list
*/
- dev_dbg(&dev->pdev->dev, "amthif cb->response_buffer size - %d\n",
+ dev_dbg(dev->dev, "amthif cb->response_buffer size - %d\n",
cb->response_buffer.size);
- dev_dbg(&dev->pdev->dev, "amthif cb->buf_idx - %lu\n", cb->buf_idx);
+ dev_dbg(dev->dev, "amthif cb->buf_idx - %lu\n", cb->buf_idx);
/* length is being truncated to PAGE_SIZE, however,
* the buf_idx may point beyond */
length = min_t(size_t, length, (cb->buf_idx - *offset));
if (copy_to_user(ubuf, cb->response_buffer.data + *offset, length)) {
- dev_dbg(&dev->pdev->dev, "failed to copy data to userland\n");
+ dev_dbg(dev->dev, "failed to copy data to userland\n");
rets = -EFAULT;
} else {
rets = length;
@@ -253,7 +243,7 @@ int mei_amthif_read(struct mei_device *dev, struct file *file,
}
}
free:
- dev_dbg(&dev->pdev->dev, "free amthif cb memory.\n");
+ dev_dbg(dev->dev, "free amthif cb memory.\n");
*offset = 0;
mei_io_cb_free(cb);
out:
@@ -266,7 +256,7 @@ out:
* @dev: the device structure
* @cb: mei call back struct
*
- * returns 0 on success, <0 on failure.
+ * Return: 0 on success, <0 on failure.
*
*/
static int mei_amthif_send_cmd(struct mei_device *dev, struct mei_cl_cb *cb)
@@ -277,7 +267,7 @@ static int mei_amthif_send_cmd(struct mei_device *dev, struct mei_cl_cb *cb)
if (!dev || !cb)
return -ENODEV;
- dev_dbg(&dev->pdev->dev, "write data to amthif client.\n");
+ dev_dbg(dev->dev, "write data to amthif client.\n");
dev->iamthif_state = MEI_IAMTHIF_WRITING;
dev->iamthif_current_cb = cb;
@@ -316,12 +306,12 @@ static int mei_amthif_send_cmd(struct mei_device *dev, struct mei_cl_cb *cb)
return -EIO;
dev->iamthif_flow_control_pending = true;
dev->iamthif_state = MEI_IAMTHIF_FLOW_CONTROL;
- dev_dbg(&dev->pdev->dev, "add amthif cb to write waiting list\n");
+ dev_dbg(dev->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 amthif cb to write list.\n");
+ dev_dbg(dev->dev, "message does not complete, so add amthif cb to write list.\n");
list_add_tail(&cb->list, &dev->write_list.list);
}
} else {
@@ -336,7 +326,7 @@ static int mei_amthif_send_cmd(struct mei_device *dev, struct mei_cl_cb *cb)
* @dev: the device structure
* @cb: mei call back struct
*
- * returns 0 on success, <0 on failure.
+ * Return: 0 on success, <0 on failure.
*
*/
int mei_amthif_write(struct mei_device *dev, struct mei_cl_cb *cb)
@@ -354,25 +344,23 @@ int mei_amthif_write(struct mei_device *dev, struct mei_cl_cb *cb)
if (!list_empty(&dev->amthif_cmd_list.list) ||
dev->iamthif_state != MEI_IAMTHIF_IDLE) {
- dev_dbg(&dev->pdev->dev,
+ dev_dbg(dev->dev,
"amthif state = %d\n", dev->iamthif_state);
- dev_dbg(&dev->pdev->dev, "AMTHIF: add cb to the wait list\n");
+ dev_dbg(dev->dev, "AMTHIF: add cb to the wait list\n");
list_add_tail(&cb->list, &dev->amthif_cmd_list.list);
return 0;
}
return mei_amthif_send_cmd(dev, cb);
}
/**
- * mei_amthif_run_next_cmd
+ * mei_amthif_run_next_cmd - send next amt command from queue
*
* @dev: the device structure
- *
- * returns 0 on success, <0 on failure.
*/
void mei_amthif_run_next_cmd(struct mei_device *dev)
{
- struct mei_cl_cb *pos = NULL;
- struct mei_cl_cb *next = NULL;
+ struct mei_cl_cb *cb;
+ struct mei_cl_cb *next;
int status;
if (!dev)
@@ -386,21 +374,17 @@ void mei_amthif_run_next_cmd(struct mei_device *dev)
dev->iamthif_timer = 0;
dev->iamthif_file_object = NULL;
- 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);
+ dev_dbg(dev->dev, "complete amthif cmd_list cb.\n");
- if (pos->cl && pos->cl == &dev->iamthif_cl) {
- status = mei_amthif_send_cmd(dev, pos);
- if (status) {
- dev_dbg(&dev->pdev->dev,
- "amthif write failed status = %d\n",
+ list_for_each_entry_safe(cb, next, &dev->amthif_cmd_list.list, list) {
+ list_del(&cb->list);
+ if (!cb->cl)
+ continue;
+ status = mei_amthif_send_cmd(dev, cb);
+ if (status)
+ dev_warn(dev->dev, "amthif write failed status = %d\n",
status);
- return;
- }
- break;
- }
+ break;
}
}
@@ -421,7 +405,7 @@ unsigned int mei_amthif_poll(struct mei_device *dev,
dev->iamthif_file_object == file) {
mask |= (POLLIN | POLLRDNORM);
- dev_dbg(&dev->pdev->dev, "run next amthif cb\n");
+ dev_dbg(dev->dev, "run next amthif cb\n");
mei_amthif_run_next_cmd(dev);
}
mutex_unlock(&dev->device_lock);
@@ -434,12 +418,11 @@ unsigned int mei_amthif_poll(struct mei_device *dev,
/**
* mei_amthif_irq_write - write iamthif command in irq thread context.
*
- * @dev: the device structure.
- * @cb_pos: callback block.
* @cl: private data of the file object.
+ * @cb: callback block.
* @cmpl_list: complete list.
*
- * returns 0, OK; otherwise, error.
+ * Return: 0, OK; otherwise, error.
*/
int mei_amthif_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
struct mei_cl_cb *cmpl_list)
@@ -481,7 +464,7 @@ int mei_amthif_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
return 0;
}
- dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(&mei_hdr));
+ dev_dbg(dev->dev, MEI_HDR_FMT, MEI_HDR_PRM(&mei_hdr));
rets = mei_write_message(dev, &mei_hdr,
dev->iamthif_msg_buf + dev->iamthif_msg_buf_index);
@@ -514,14 +497,14 @@ int mei_amthif_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
}
/**
- * mei_amthif_irq_read_message - read routine after ISR to
+ * mei_amthif_irq_read_msg - read routine after ISR to
* handle the read amthif message
*
* @dev: the device structure
* @mei_hdr: header of amthif message
* @complete_list: An instance of our list structure
*
- * returns 0 on success, <0 on failure.
+ * Return: 0 on success, <0 on failure.
*/
int mei_amthif_irq_read_msg(struct mei_device *dev,
struct mei_msg_hdr *mei_hdr,
@@ -543,10 +526,10 @@ int mei_amthif_irq_read_msg(struct mei_device *dev,
if (!mei_hdr->msg_complete)
return 0;
- dev_dbg(&dev->pdev->dev, "amthif_message_buffer_index =%d\n",
+ dev_dbg(dev->dev, "amthif_message_buffer_index =%d\n",
mei_hdr->length);
- dev_dbg(&dev->pdev->dev, "completed amthif read.\n ");
+ dev_dbg(dev->dev, "completed amthif read.\n ");
if (!dev->iamthif_current_cb)
return -ENODEV;
@@ -559,10 +542,10 @@ int mei_amthif_irq_read_msg(struct mei_device *dev,
dev->iamthif_stall_timer = 0;
cb->buf_idx = dev->iamthif_msg_buf_index;
cb->read_time = jiffies;
- if (dev->iamthif_ioctl && cb->cl == &dev->iamthif_cl) {
+ if (dev->iamthif_ioctl) {
/* found the iamthif cb */
- dev_dbg(&dev->pdev->dev, "complete the amthif read cb.\n ");
- dev_dbg(&dev->pdev->dev, "add the amthif read cb to complete.\n ");
+ dev_dbg(dev->dev, "complete the amthif read cb.\n ");
+ dev_dbg(dev->dev, "add the amthif read cb to complete.\n ");
list_add_tail(&cb->list, &complete_list->list);
}
return 0;
@@ -574,7 +557,7 @@ int mei_amthif_irq_read_msg(struct mei_device *dev,
* @dev: the device structure.
* @slots: free slots.
*
- * returns 0, OK; otherwise, error.
+ * Return: 0, OK; otherwise, error.
*/
int mei_amthif_irq_read(struct mei_device *dev, s32 *slots)
{
@@ -586,11 +569,11 @@ int mei_amthif_irq_read(struct mei_device *dev, s32 *slots)
*slots -= msg_slots;
if (mei_hbm_cl_flow_control_req(dev, &dev->iamthif_cl)) {
- dev_dbg(&dev->pdev->dev, "iamthif flow control failed\n");
+ dev_dbg(dev->dev, "iamthif flow control failed\n");
return -EIO;
}
- dev_dbg(&dev->pdev->dev, "iamthif flow control success\n");
+ dev_dbg(dev->dev, "iamthif flow control success\n");
dev->iamthif_state = MEI_IAMTHIF_READING;
dev->iamthif_flow_control_pending = false;
dev->iamthif_msg_buf_index = 0;
@@ -604,7 +587,7 @@ int mei_amthif_irq_read(struct mei_device *dev, s32 *slots)
* mei_amthif_complete - complete amthif callback.
*
* @dev: the device structure.
- * @cb_pos: callback block.
+ * @cb: callback block.
*/
void mei_amthif_complete(struct mei_device *dev, struct mei_cl_cb *cb)
{
@@ -615,15 +598,15 @@ void mei_amthif_complete(struct mei_device *dev, struct mei_cl_cb *cb)
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, "amthif read completed\n");
+ dev_dbg(dev->dev, "amthif read completed\n");
dev->iamthif_timer = jiffies;
- dev_dbg(&dev->pdev->dev, "dev->iamthif_timer = %ld\n",
+ dev_dbg(dev->dev, "dev->iamthif_timer = %ld\n",
dev->iamthif_timer);
} else {
mei_amthif_run_next_cmd(dev);
}
- dev_dbg(&dev->pdev->dev, "completing amthif call back.\n");
+ dev_dbg(dev->dev, "completing amthif call back.\n");
wake_up_interruptible(&dev->iamthif_cl.wait);
}
@@ -638,7 +621,7 @@ void mei_amthif_complete(struct mei_device *dev, struct mei_cl_cb *cb)
* mei_clear_list is called to clear resources associated with file
* when application calls close function or Ctrl-C was pressed
*
- * returns true if callback removed from the list, false otherwise
+ * Return: true if callback removed from the list, false otherwise
*/
static bool mei_clear_list(struct mei_device *dev,
const struct file *file, struct list_head *mei_cb_list)
@@ -678,7 +661,7 @@ static bool mei_clear_list(struct mei_device *dev,
* mei_clear_lists is called to clear resources associated with file
* when application calls close function or Ctrl-C was pressed
*
- * returns true if callback removed from the list, false otherwise
+ * Return: true if callback removed from the list, false otherwise
*/
static bool mei_clear_lists(struct mei_device *dev, struct file *file)
{
@@ -719,7 +702,7 @@ static bool mei_clear_lists(struct mei_device *dev, struct file *file)
* @dev: device structure
* @file: pointer to file structure
*
-* returns 0 on success, <0 on error
+* Return: 0 on success, <0 on error
*/
int mei_amthif_release(struct mei_device *dev, struct file *file)
{
@@ -729,11 +712,11 @@ int mei_amthif_release(struct mei_device *dev, struct file *file)
if (dev->iamthif_file_object == file &&
dev->iamthif_state != MEI_IAMTHIF_IDLE) {
- dev_dbg(&dev->pdev->dev, "amthif canceled iamthif state %d\n",
+ dev_dbg(dev->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 amthif iamthif cb\n");
+ dev_dbg(dev->dev, "run next amthif iamthif cb\n");
mei_amthif_run_next_cmd(dev);
}
}
diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index 0e993ef28b94..4d20d60ca38d 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -22,7 +22,6 @@
#include <linux/slab.h>
#include <linux/mutex.h>
#include <linux/interrupt.h>
-#include <linux/pci.h>
#include <linux/mei_cl_bus.h>
#include "mei_dev.h"
@@ -70,7 +69,7 @@ static int mei_cl_device_probe(struct device *dev)
dev_dbg(dev, "Device probe\n");
- strncpy(id.name, dev_name(dev), sizeof(id.name));
+ strlcpy(id.name, dev_name(dev), sizeof(id.name));
return driver->probe(device, &id);
}
@@ -147,7 +146,7 @@ static struct mei_cl *mei_bus_find_mei_cl_by_uuid(struct mei_device *dev,
struct mei_cl *cl;
list_for_each_entry(cl, &dev->device_list, device_link) {
- if (!uuid_le_cmp(uuid, cl->device_uuid))
+ if (!uuid_le_cmp(uuid, cl->cl_uuid))
return cl;
}
@@ -172,7 +171,7 @@ struct mei_cl_device *mei_cl_add_device(struct mei_device *dev,
device->cl = cl;
device->ops = ops;
- device->dev.parent = &dev->pdev->dev;
+ device->dev.parent = dev->dev;
device->dev.bus = &mei_cl_bus_type;
device->dev.type = &mei_cl_device_type;
@@ -180,7 +179,7 @@ struct mei_cl_device *mei_cl_add_device(struct mei_device *dev,
status = device_register(&device->dev);
if (status) {
- dev_err(&dev->pdev->dev, "Failed to register MEI device\n");
+ dev_err(dev->dev, "Failed to register MEI device\n");
kfree(device);
return NULL;
}
@@ -229,8 +228,8 @@ static int ___mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length,
bool blocking)
{
struct mei_device *dev;
+ struct mei_me_client *me_cl;
struct mei_cl_cb *cb;
- int id;
int rets;
if (WARN_ON(!cl || !cl->dev))
@@ -242,11 +241,11 @@ static int ___mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length,
return -ENODEV;
/* Check if we have an ME client device */
- id = mei_me_cl_by_id(dev, cl->me_client_id);
- if (id < 0)
- return id;
+ me_cl = mei_me_cl_by_uuid_id(dev, &cl->cl_uuid, cl->me_client_id);
+ if (!me_cl)
+ return -ENOTTY;
- if (length > dev->me_clients[id].props.max_msg_length)
+ if (length > me_cl->props.max_msg_length)
return -EFBIG;
cb = mei_io_cb_init(cl, NULL);
@@ -430,7 +429,7 @@ int mei_cl_enable_device(struct mei_cl_device *device)
err = mei_cl_connect(cl, NULL);
if (err < 0) {
mutex_unlock(&dev->device_lock);
- dev_err(&dev->pdev->dev, "Could not connect to the ME client");
+ dev_err(dev->dev, "Could not connect to the ME client");
return err;
}
@@ -462,7 +461,7 @@ int mei_cl_disable_device(struct mei_cl_device *device)
if (cl->state != MEI_FILE_CONNECTED) {
mutex_unlock(&dev->device_lock);
- dev_err(&dev->pdev->dev, "Already disconnected");
+ dev_err(dev->dev, "Already disconnected");
return 0;
}
@@ -472,7 +471,7 @@ int mei_cl_disable_device(struct mei_cl_device *device)
err = mei_cl_disconnect(cl);
if (err < 0) {
mutex_unlock(&dev->device_lock);
- dev_err(&dev->pdev->dev,
+ dev_err(dev->dev,
"Could not disconnect from the ME client");
return err;
diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c
index 2da05c0e113d..bc9ba5359bc6 100644
--- a/drivers/misc/mei/client.c
+++ b/drivers/misc/mei/client.c
@@ -14,10 +14,10 @@
*
*/
-#include <linux/pci.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/delay.h>
+#include <linux/slab.h>
#include <linux/pm_runtime.h>
#include <linux/mei.h>
@@ -27,47 +27,90 @@
#include "client.h"
/**
- * mei_me_cl_by_uuid - locate index of me client
+ * mei_me_cl_by_uuid - locate me client by uuid
*
* @dev: mei device
+ * @uuid: me client uuid
*
* Locking: called under "dev->device_lock" lock
*
- * returns me client index or -ENOENT if not found
+ * Return: me client or NULL if not found
*/
-int mei_me_cl_by_uuid(const struct mei_device *dev, const uuid_le *uuid)
+struct mei_me_client *mei_me_cl_by_uuid(const struct mei_device *dev,
+ const uuid_le *uuid)
{
- int i;
+ struct mei_me_client *me_cl;
- for (i = 0; i < dev->me_clients_num; ++i)
- if (uuid_le_cmp(*uuid,
- dev->me_clients[i].props.protocol_name) == 0)
- return i;
+ list_for_each_entry(me_cl, &dev->me_clients, list)
+ if (uuid_le_cmp(*uuid, me_cl->props.protocol_name) == 0)
+ return me_cl;
- return -ENOENT;
+ return NULL;
}
-
/**
- * mei_me_cl_by_id return index to me_clients for client_id
+ * mei_me_cl_by_id - locate me client by client id
*
* @dev: the device structure
* @client_id: me client id
*
* Locking: called under "dev->device_lock" lock
*
- * returns index on success, -ENOENT on failure.
+ * Return: me client or NULL if not found
*/
+struct mei_me_client *mei_me_cl_by_id(struct mei_device *dev, u8 client_id)
+{
+
+ struct mei_me_client *me_cl;
-int mei_me_cl_by_id(struct mei_device *dev, u8 client_id)
+ list_for_each_entry(me_cl, &dev->me_clients, list)
+ if (me_cl->client_id == client_id)
+ return me_cl;
+ return NULL;
+}
+
+/**
+ * mei_me_cl_by_uuid_id - locate me client by client id and uuid
+ *
+ * @dev: the device structure
+ * @uuid: me client uuid
+ * @client_id: me client id
+ *
+ * Locking: called under "dev->device_lock" lock
+ *
+ * Return: me client or NULL if not found
+ */
+struct mei_me_client *mei_me_cl_by_uuid_id(struct mei_device *dev,
+ const uuid_le *uuid, u8 client_id)
{
- int i;
+ struct mei_me_client *me_cl;
- for (i = 0; i < dev->me_clients_num; i++)
- if (dev->me_clients[i].client_id == client_id)
- return i;
+ list_for_each_entry(me_cl, &dev->me_clients, list)
+ if (uuid_le_cmp(*uuid, me_cl->props.protocol_name) == 0 &&
+ me_cl->client_id == client_id)
+ return me_cl;
+ return NULL;
+}
- return -ENOENT;
+/**
+ * mei_me_cl_remove - remove me client matching uuid and client_id
+ *
+ * @dev: the device structure
+ * @uuid: me client uuid
+ * @client_id: me client address
+ */
+void mei_me_cl_remove(struct mei_device *dev, const uuid_le *uuid, u8 client_id)
+{
+ struct mei_me_client *me_cl, *next;
+
+ list_for_each_entry_safe(me_cl, next, &dev->me_clients, list) {
+ if (uuid_le_cmp(*uuid, me_cl->props.protocol_name) == 0 &&
+ me_cl->client_id == client_id) {
+ list_del(&me_cl->list);
+ kfree(me_cl);
+ break;
+ }
+ }
}
@@ -77,7 +120,7 @@ int mei_me_cl_by_id(struct mei_device *dev, u8 client_id)
* @cl1: host client 1
* @cl2: host client 2
*
- * returns true - if the clients has same host and me ids
+ * Return: true - if the clients has same host and me ids
* false - otherwise
*/
static inline bool mei_cl_cmp_id(const struct mei_cl *cl1,
@@ -117,7 +160,7 @@ static void __mei_io_list_flush(struct mei_cl_cb *list,
* @list: An instance of our list structure
* @cl: host client
*/
-static inline void mei_io_list_flush(struct mei_cl_cb *list, struct mei_cl *cl)
+void mei_io_list_flush(struct mei_cl_cb *list, struct mei_cl *cl)
{
__mei_io_list_flush(list, cl, false);
}
@@ -152,10 +195,10 @@ void mei_io_cb_free(struct mei_cl_cb *cb)
/**
* mei_io_cb_init - allocate and initialize io callback
*
- * @cl - mei client
+ * @cl: mei client
* @fp: pointer to file structure
*
- * returns mei_cl_cb pointer or NULL;
+ * Return: mei_cl_cb pointer or NULL;
*/
struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, struct file *fp)
{
@@ -179,7 +222,7 @@ struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, struct file *fp)
* @cb: io callback structure
* @length: size of the buffer
*
- * returns 0 on success
+ * Return: 0 on success
* -EINVAL if cb is NULL
* -ENOMEM if allocation failed
*/
@@ -203,7 +246,7 @@ int mei_io_cb_alloc_req_buf(struct mei_cl_cb *cb, size_t length)
* @cb: io callback structure
* @length: size of the buffer
*
- * returns 0 on success
+ * Return: 0 on success
* -EINVAL if cb is NULL
* -ENOMEM if allocation failed
*/
@@ -228,6 +271,8 @@ int mei_io_cb_alloc_resp_buf(struct mei_cl_cb *cb, size_t length)
* mei_cl_flush_queues - flushes queue lists belonging to cl.
*
* @cl: host client
+ *
+ * Return: 0 on success, -EINVAL if cl or cl->dev is NULL.
*/
int mei_cl_flush_queues(struct mei_cl *cl)
{
@@ -273,7 +318,7 @@ void mei_cl_init(struct mei_cl *cl, struct mei_device *dev)
* mei_cl_allocate - allocates cl structure and sets it up.
*
* @dev: mei device
- * returns The allocated file or NULL on failure
+ * Return: The allocated file or NULL on failure
*/
struct mei_cl *mei_cl_allocate(struct mei_device *dev)
{
@@ -293,7 +338,7 @@ struct mei_cl *mei_cl_allocate(struct mei_device *dev)
*
* @cl: host client
*
- * returns cb on success, NULL on error
+ * Return: cb on success, NULL on error
*/
struct mei_cl_cb *mei_cl_find_read_cb(struct mei_cl *cl)
{
@@ -311,7 +356,7 @@ struct mei_cl_cb *mei_cl_find_read_cb(struct mei_cl *cl)
* @cl - host client
* @id - fixed host id or -1 for generic one
*
- * returns 0 on success
+ * Return: 0 on success
* -EINVAL on incorrect values
* -ENONET if client not found
*/
@@ -331,13 +376,13 @@ int mei_cl_link(struct mei_cl *cl, int id)
MEI_CLIENTS_MAX);
if (id >= MEI_CLIENTS_MAX) {
- dev_err(&dev->pdev->dev, "id exceeded %d", MEI_CLIENTS_MAX);
+ dev_err(dev->dev, "id exceeded %d", MEI_CLIENTS_MAX);
return -EMFILE;
}
open_handle_count = dev->open_handle_count + dev->iamthif_open_count;
if (open_handle_count >= MEI_MAX_OPEN_HANDLE_COUNT) {
- dev_err(&dev->pdev->dev, "open_handle_count exceeded %d",
+ dev_err(dev->dev, "open_handle_count exceeded %d",
MEI_MAX_OPEN_HANDLE_COUNT);
return -EMFILE;
}
@@ -359,6 +404,8 @@ int mei_cl_link(struct mei_cl *cl, int id)
* mei_cl_unlink - remove me_cl from the list
*
* @cl: host client
+ *
+ * Return: always 0
*/
int mei_cl_unlink(struct mei_cl *cl)
{
@@ -395,19 +442,19 @@ void mei_host_client_init(struct work_struct *work)
{
struct mei_device *dev = container_of(work,
struct mei_device, init_work);
- struct mei_client_properties *client_props;
- int i;
+ struct mei_me_client *me_cl;
+ struct mei_client_properties *props;
mutex_lock(&dev->device_lock);
- for (i = 0; i < dev->me_clients_num; i++) {
- client_props = &dev->me_clients[i].props;
+ list_for_each_entry(me_cl, &dev->me_clients, list) {
+ props = &me_cl->props;
- if (!uuid_le_cmp(client_props->protocol_name, mei_amthif_guid))
+ if (!uuid_le_cmp(props->protocol_name, mei_amthif_guid))
mei_amthif_host_init(dev);
- else if (!uuid_le_cmp(client_props->protocol_name, mei_wd_guid))
+ else if (!uuid_le_cmp(props->protocol_name, mei_wd_guid))
mei_wd_host_init(dev);
- else if (!uuid_le_cmp(client_props->protocol_name, mei_nfc_guid))
+ else if (!uuid_le_cmp(props->protocol_name, mei_nfc_guid))
mei_nfc_host_init(dev);
}
@@ -417,27 +464,27 @@ void mei_host_client_init(struct work_struct *work)
mutex_unlock(&dev->device_lock);
- pm_runtime_mark_last_busy(&dev->pdev->dev);
- dev_dbg(&dev->pdev->dev, "rpm: autosuspend\n");
- pm_runtime_autosuspend(&dev->pdev->dev);
+ pm_runtime_mark_last_busy(dev->dev);
+ dev_dbg(dev->dev, "rpm: autosuspend\n");
+ pm_runtime_autosuspend(dev->dev);
}
/**
- * mei_hbuf_acquire: try to acquire host buffer
+ * mei_hbuf_acquire - try to acquire host buffer
*
* @dev: the device structure
- * returns true if host buffer was acquired
+ * Return: true if host buffer was acquired
*/
bool mei_hbuf_acquire(struct mei_device *dev)
{
if (mei_pg_state(dev) == MEI_PG_ON ||
dev->pg_event == MEI_PG_EVENT_WAIT) {
- dev_dbg(&dev->pdev->dev, "device is in pg\n");
+ dev_dbg(dev->dev, "device is in pg\n");
return false;
}
if (!dev->hbuf_is_ready) {
- dev_dbg(&dev->pdev->dev, "hbuf is not ready\n");
+ dev_dbg(dev->dev, "hbuf is not ready\n");
return false;
}
@@ -453,7 +500,7 @@ bool mei_hbuf_acquire(struct mei_device *dev)
*
* Locking: called under "dev->device_lock" lock
*
- * returns 0 on success, <0 on failure.
+ * Return: 0 on success, <0 on failure.
*/
int mei_cl_disconnect(struct mei_cl *cl)
{
@@ -471,9 +518,9 @@ int mei_cl_disconnect(struct mei_cl *cl)
if (cl->state != MEI_FILE_DISCONNECTING)
return 0;
- rets = pm_runtime_get(&dev->pdev->dev);
+ rets = pm_runtime_get(dev->dev);
if (rets < 0 && rets != -EINPROGRESS) {
- pm_runtime_put_noidle(&dev->pdev->dev);
+ pm_runtime_put_noidle(dev->dev);
cl_err(dev, cl, "rpm: get failed %d\n", rets);
return rets;
}
@@ -484,7 +531,8 @@ int mei_cl_disconnect(struct mei_cl *cl)
goto free;
}
- cb->fop_type = MEI_FOP_CLOSE;
+ cb->fop_type = MEI_FOP_DISCONNECT;
+
if (mei_hbuf_acquire(dev)) {
if (mei_hbm_cl_disconnect_req(dev, cl)) {
rets = -ENODEV;
@@ -501,7 +549,7 @@ int mei_cl_disconnect(struct mei_cl *cl)
}
mutex_unlock(&dev->device_lock);
- wait_event_timeout(dev->wait_recvd_msg,
+ wait_event_timeout(cl->wait,
MEI_FILE_DISCONNECTED == cl->state,
mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT));
@@ -519,8 +567,8 @@ int mei_cl_disconnect(struct mei_cl *cl)
mei_io_list_flush(&dev->ctrl_wr_list, cl);
free:
cl_dbg(dev, cl, "rpm: autosuspend\n");
- pm_runtime_mark_last_busy(&dev->pdev->dev);
- pm_runtime_put_autosuspend(&dev->pdev->dev);
+ pm_runtime_mark_last_busy(dev->dev);
+ pm_runtime_put_autosuspend(dev->dev);
mei_io_cb_free(cb);
return rets;
@@ -533,7 +581,7 @@ free:
*
* @cl: private data of the file object
*
- * returns true if other client is connected, false - otherwise.
+ * Return: true if other client is connected, false - otherwise.
*/
bool mei_cl_is_other_connecting(struct mei_cl *cl)
{
@@ -560,10 +608,11 @@ bool mei_cl_is_other_connecting(struct mei_cl *cl)
* mei_cl_connect - connect host client to the me one
*
* @cl: host client
+ * @file: pointer to file structure
*
* Locking: called under "dev->device_lock" lock
*
- * returns 0 on success, <0 on failure.
+ * Return: 0 on success, <0 on failure.
*/
int mei_cl_connect(struct mei_cl *cl, struct file *file)
{
@@ -576,9 +625,9 @@ int mei_cl_connect(struct mei_cl *cl, struct file *file)
dev = cl->dev;
- rets = pm_runtime_get(&dev->pdev->dev);
+ rets = pm_runtime_get(dev->dev);
if (rets < 0 && rets != -EINPROGRESS) {
- pm_runtime_put_noidle(&dev->pdev->dev);
+ pm_runtime_put_noidle(dev->dev);
cl_err(dev, cl, "rpm: get failed %d\n", rets);
return rets;
}
@@ -606,7 +655,7 @@ int mei_cl_connect(struct mei_cl *cl, struct file *file)
}
mutex_unlock(&dev->device_lock);
- wait_event_timeout(dev->wait_recvd_msg,
+ wait_event_timeout(cl->wait,
(cl->state == MEI_FILE_CONNECTED ||
cl->state == MEI_FILE_DISCONNECTED),
mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT));
@@ -626,8 +675,8 @@ int mei_cl_connect(struct mei_cl *cl, struct file *file)
out:
cl_dbg(dev, cl, "rpm: autosuspend\n");
- pm_runtime_mark_last_busy(&dev->pdev->dev);
- pm_runtime_put_autosuspend(&dev->pdev->dev);
+ pm_runtime_mark_last_busy(dev->dev);
+ pm_runtime_put_autosuspend(dev->dev);
mei_io_cb_free(cb);
return rets;
@@ -638,7 +687,7 @@ out:
*
* @cl: private data of the file object
*
- * returns 1 if mei_flow_ctrl_creds >0, 0 - otherwise.
+ * Return: 1 if mei_flow_ctrl_creds >0, 0 - otherwise.
* -ENOENT if mei_cl is not present
* -EINVAL if single_recv_buf == 0
*/
@@ -646,26 +695,21 @@ int mei_cl_flow_ctrl_creds(struct mei_cl *cl)
{
struct mei_device *dev;
struct mei_me_client *me_cl;
- int id;
if (WARN_ON(!cl || !cl->dev))
return -EINVAL;
dev = cl->dev;
- if (!dev->me_clients_num)
- return 0;
-
if (cl->mei_flow_ctrl_creds > 0)
return 1;
- id = mei_me_cl_by_id(dev, cl->me_client_id);
- if (id < 0) {
+ me_cl = mei_me_cl_by_id(dev, cl->me_client_id);
+ if (!me_cl) {
cl_err(dev, cl, "no such me client %d\n", cl->me_client_id);
- return id;
+ return -ENOENT;
}
- me_cl = &dev->me_clients[id];
if (me_cl->mei_flow_ctrl_creds) {
if (WARN_ON(me_cl->props.single_recv_buf == 0))
return -EINVAL;
@@ -679,7 +723,7 @@ int mei_cl_flow_ctrl_creds(struct mei_cl *cl)
*
* @cl: private data of the file object
*
- * @returns
+ * Return:
* 0 on success
* -ENOENT when me client is not found
* -EINVAL when ctrl credits are <= 0
@@ -688,21 +732,19 @@ int mei_cl_flow_ctrl_reduce(struct mei_cl *cl)
{
struct mei_device *dev;
struct mei_me_client *me_cl;
- int id;
if (WARN_ON(!cl || !cl->dev))
return -EINVAL;
dev = cl->dev;
- id = mei_me_cl_by_id(dev, cl->me_client_id);
- if (id < 0) {
+ me_cl = mei_me_cl_by_id(dev, cl->me_client_id);
+ if (!me_cl) {
cl_err(dev, cl, "no such me client %d\n", cl->me_client_id);
- return id;
+ return -ENOENT;
}
- me_cl = &dev->me_clients[id];
- if (me_cl->props.single_recv_buf != 0) {
+ if (me_cl->props.single_recv_buf) {
if (WARN_ON(me_cl->mei_flow_ctrl_creds <= 0))
return -EINVAL;
me_cl->mei_flow_ctrl_creds--;
@@ -718,15 +760,16 @@ int mei_cl_flow_ctrl_reduce(struct mei_cl *cl)
* mei_cl_read_start - the start read client message function.
*
* @cl: host client
+ * @length: number of bytes to read
*
- * returns 0 on success, <0 on failure.
+ * Return: 0 on success, <0 on failure.
*/
int mei_cl_read_start(struct mei_cl *cl, size_t length)
{
struct mei_device *dev;
struct mei_cl_cb *cb;
+ struct mei_me_client *me_cl;
int rets;
- int i;
if (WARN_ON(!cl || !cl->dev))
return -ENODEV;
@@ -740,15 +783,15 @@ int mei_cl_read_start(struct mei_cl *cl, size_t length)
cl_dbg(dev, cl, "read is pending.\n");
return -EBUSY;
}
- i = mei_me_cl_by_id(dev, cl->me_client_id);
- if (i < 0) {
+ me_cl = mei_me_cl_by_uuid_id(dev, &cl->cl_uuid, cl->me_client_id);
+ if (!me_cl) {
cl_err(dev, cl, "no such me client %d\n", cl->me_client_id);
return -ENOTTY;
}
- rets = pm_runtime_get(&dev->pdev->dev);
+ rets = pm_runtime_get(dev->dev);
if (rets < 0 && rets != -EINPROGRESS) {
- pm_runtime_put_noidle(&dev->pdev->dev);
+ pm_runtime_put_noidle(dev->dev);
cl_err(dev, cl, "rpm: get failed %d\n", rets);
return rets;
}
@@ -760,7 +803,7 @@ int mei_cl_read_start(struct mei_cl *cl, size_t length)
}
/* always allocate at least client max message */
- length = max_t(size_t, length, dev->me_clients[i].props.max_msg_length);
+ length = max_t(size_t, length, me_cl->props.max_msg_length);
rets = mei_io_cb_alloc_resp_buf(cb, length);
if (rets)
goto out;
@@ -780,8 +823,8 @@ int mei_cl_read_start(struct mei_cl *cl, size_t length)
out:
cl_dbg(dev, cl, "rpm: autosuspend\n");
- pm_runtime_mark_last_busy(&dev->pdev->dev);
- pm_runtime_put_autosuspend(&dev->pdev->dev);
+ pm_runtime_mark_last_busy(dev->dev);
+ pm_runtime_put_autosuspend(dev->dev);
if (rets)
mei_io_cb_free(cb);
@@ -797,7 +840,7 @@ out:
* @cb: callback block.
* @cmpl_list: complete list.
*
- * returns 0, OK; otherwise error.
+ * Return: 0, OK; otherwise error.
*/
int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
struct mei_cl_cb *cmpl_list)
@@ -874,12 +917,13 @@ int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb,
/**
* mei_cl_write - submit a write cb to mei device
- assumes device_lock is locked
+ * assumes device_lock is locked
*
* @cl: host client
- * @cl: write callback with filled data
+ * @cb: write callback with filled data
+ * @blocking: block until completed
*
- * returns number of bytes sent on success, <0 on failure.
+ * Return: number of bytes sent on success, <0 on failure.
*/
int mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb, bool blocking)
{
@@ -900,11 +944,11 @@ int mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb, bool blocking)
buf = &cb->request_buffer;
- cl_dbg(dev, cl, "mei_cl_write %d\n", buf->size);
+ cl_dbg(dev, cl, "size=%d\n", buf->size);
- rets = pm_runtime_get(&dev->pdev->dev);
+ rets = pm_runtime_get(dev->dev);
if (rets < 0 && rets != -EINPROGRESS) {
- pm_runtime_put_noidle(&dev->pdev->dev);
+ pm_runtime_put_noidle(dev->dev);
cl_err(dev, cl, "rpm: get failed %d\n", rets);
return rets;
}
@@ -979,8 +1023,8 @@ out:
rets = buf->size;
err:
cl_dbg(dev, cl, "rpm: autosuspend\n");
- pm_runtime_mark_last_busy(&dev->pdev->dev);
- pm_runtime_put_autosuspend(&dev->pdev->dev);
+ pm_runtime_mark_last_busy(dev->dev);
+ pm_runtime_put_autosuspend(dev->dev);
return rets;
}
@@ -1016,7 +1060,7 @@ void mei_cl_complete(struct mei_cl *cl, struct mei_cl_cb *cb)
/**
* mei_cl_all_disconnect - disconnect forcefully all connected clients
*
- * @dev - mei device
+ * @dev: mei device
*/
void mei_cl_all_disconnect(struct mei_device *dev)
@@ -1034,11 +1078,12 @@ void mei_cl_all_disconnect(struct mei_device *dev)
/**
* mei_cl_all_wakeup - wake up all readers and writers they can be interrupted
*
- * @dev - mei device
+ * @dev: mei device
*/
void mei_cl_all_wakeup(struct mei_device *dev)
{
struct mei_cl *cl;
+
list_for_each_entry(cl, &dev->file_list, link) {
if (waitqueue_active(&cl->rx_wait)) {
cl_dbg(dev, cl, "Waking up reading client!\n");
@@ -1053,8 +1098,8 @@ void mei_cl_all_wakeup(struct mei_device *dev)
/**
* mei_cl_all_write_clear - clear all pending writes
-
- * @dev - mei device
+ *
+ * @dev: mei device
*/
void mei_cl_all_write_clear(struct mei_device *dev)
{
diff --git a/drivers/misc/mei/client.h b/drivers/misc/mei/client.h
index 96d5de0389f9..d9d0c1525259 100644
--- a/drivers/misc/mei/client.h
+++ b/drivers/misc/mei/client.h
@@ -24,8 +24,15 @@
#include "mei_dev.h"
-int mei_me_cl_by_uuid(const struct mei_device *dev, const uuid_le *cuuid);
-int mei_me_cl_by_id(struct mei_device *dev, u8 client_id);
+struct mei_me_client *mei_me_cl_by_uuid(const struct mei_device *dev,
+ const uuid_le *cuuid);
+struct mei_me_client *mei_me_cl_by_id(struct mei_device *dev, u8 client_id);
+
+struct mei_me_client *mei_me_cl_by_uuid_id(struct mei_device *dev,
+ const uuid_le *uuid, u8 client_id);
+
+void mei_me_cl_remove(struct mei_device *dev,
+ const uuid_le *uuid, u8 client_id);
/*
* MEI IO Functions
@@ -45,6 +52,8 @@ static inline void mei_io_list_init(struct mei_cl_cb *list)
{
INIT_LIST_HEAD(&list->list);
}
+void mei_io_list_flush(struct mei_cl_cb *list, struct mei_cl *cl);
+
/*
* MEI Host Client Functions
*/
@@ -101,9 +110,9 @@ void mei_cl_all_write_clear(struct mei_device *dev);
#define MEI_CL_PRM(cl) (cl)->host_client_id, (cl)->me_client_id
#define cl_dbg(dev, cl, format, arg...) \
- dev_dbg(&(dev)->pdev->dev, MEI_CL_FMT format, MEI_CL_PRM(cl), ##arg)
+ dev_dbg((dev)->dev, MEI_CL_FMT format, MEI_CL_PRM(cl), ##arg)
#define cl_err(dev, cl, format, arg...) \
- dev_err(&(dev)->pdev->dev, MEI_CL_FMT format, MEI_CL_PRM(cl), ##arg)
+ dev_err((dev)->dev, MEI_CL_FMT format, MEI_CL_PRM(cl), ##arg)
#endif /* _MEI_CLIENT_H_ */
diff --git a/drivers/misc/mei/debugfs.c b/drivers/misc/mei/debugfs.c
index ced5b777c70f..ce1566715f80 100644
--- a/drivers/misc/mei/debugfs.c
+++ b/drivers/misc/mei/debugfs.c
@@ -17,7 +17,6 @@
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/debugfs.h>
-#include <linux/pci.h>
#include <linux/mei.h>
@@ -28,39 +27,47 @@ static ssize_t mei_dbgfs_read_meclients(struct file *fp, char __user *ubuf,
size_t cnt, loff_t *ppos)
{
struct mei_device *dev = fp->private_data;
- struct mei_me_client *cl;
- const size_t bufsz = 1024;
- char *buf = kzalloc(bufsz, GFP_KERNEL);
- int i;
+ struct mei_me_client *me_cl;
+ size_t bufsz = 1;
+ char *buf;
+ int i = 0;
int pos = 0;
int ret;
- if (!buf)
- return -ENOMEM;
-
- pos += scnprintf(buf + pos, bufsz - pos,
- " |id|addr| UUID |con|msg len|\n");
+#define HDR " |id|addr| UUID |con|msg len|sb|\n"
mutex_lock(&dev->device_lock);
+ list_for_each_entry(me_cl, &dev->me_clients, list)
+ bufsz++;
+
+ bufsz *= sizeof(HDR) + 1;
+ buf = kzalloc(bufsz, GFP_KERNEL);
+ if (!buf) {
+ mutex_unlock(&dev->device_lock);
+ return -ENOMEM;
+ }
+
+ pos += scnprintf(buf + pos, bufsz - pos, HDR);
+
/* if the driver is not enabled the list won't be consistent */
if (dev->dev_state != MEI_DEV_ENABLED)
goto out;
- for (i = 0; i < dev->me_clients_num; i++) {
- cl = &dev->me_clients[i];
+ list_for_each_entry(me_cl, &dev->me_clients, list) {
/* skip me clients that cannot be connected */
- if (cl->props.max_number_of_connections == 0)
+ if (me_cl->props.max_number_of_connections == 0)
continue;
pos += scnprintf(buf + pos, bufsz - pos,
- "%2d|%2d|%4d|%pUl|%3d|%7d|\n",
- i, cl->client_id,
- cl->props.fixed_address,
- &cl->props.protocol_name,
- cl->props.max_number_of_connections,
- cl->props.max_msg_length);
+ "%2d|%2d|%4d|%pUl|%3d|%7d|%2d|\n",
+ i++, me_cl->client_id,
+ me_cl->props.fixed_address,
+ &me_cl->props.protocol_name,
+ me_cl->props.max_number_of_connections,
+ me_cl->props.max_msg_length,
+ me_cl->props.single_recv_buf);
}
out:
mutex_unlock(&dev->device_lock);
@@ -98,7 +105,7 @@ static ssize_t mei_dbgfs_read_active(struct file *fp, char __user *ubuf,
mutex_lock(&dev->device_lock);
- /* if the driver is not enabled the list won't b consitent */
+ /* if the driver is not enabled the list won't be consistent */
if (dev->dev_state != MEI_DEV_ENABLED)
goto out;
@@ -135,8 +142,13 @@ static ssize_t mei_dbgfs_read_devstate(struct file *fp, char __user *ubuf,
if (!buf)
return -ENOMEM;
- pos += scnprintf(buf + pos, bufsz - pos, "%s\n",
+ pos += scnprintf(buf + pos, bufsz - pos, "dev: %s\n",
mei_dev_state_str(dev->dev_state));
+ pos += scnprintf(buf + pos, bufsz - pos, "hbm: %s\n",
+ mei_hbm_state_str(dev->hbm_state));
+ pos += scnprintf(buf + pos, bufsz - pos, "pg: %s, %s\n",
+ mei_pg_is_enabled(dev) ? "ENABLED" : "DISABLED",
+ mei_pg_state_str(mei_pg_state(dev)));
ret = simple_read_from_buffer(ubuf, cnt, ppos, buf, pos);
kfree(buf);
return ret;
@@ -149,7 +161,8 @@ static const struct file_operations mei_dbgfs_fops_devstate = {
/**
* mei_dbgfs_deregister - Remove the debugfs files and directories
- * @mei - pointer to mei device private data
+ *
+ * @dev: the mei device structure
*/
void mei_dbgfs_deregister(struct mei_device *dev)
{
@@ -160,12 +173,17 @@ void mei_dbgfs_deregister(struct mei_device *dev)
}
/**
- * Add the debugfs files
+ * mei_dbgfs_register - Add the debugfs files
*
+ * @dev: the mei device structure
+ * @name: the mei device name
+ *
+ * Return: 0 on success, <0 on failure.
*/
int mei_dbgfs_register(struct mei_device *dev, const char *name)
{
struct dentry *dir, *f;
+
dir = debugfs_create_dir(name, NULL);
if (!dir)
return -ENOMEM;
@@ -173,19 +191,19 @@ int mei_dbgfs_register(struct mei_device *dev, const char *name)
f = debugfs_create_file("meclients", S_IRUSR, dir,
dev, &mei_dbgfs_fops_meclients);
if (!f) {
- dev_err(&dev->pdev->dev, "meclients: registration failed\n");
+ dev_err(dev->dev, "meclients: registration failed\n");
goto err;
}
f = debugfs_create_file("active", S_IRUSR, dir,
dev, &mei_dbgfs_fops_active);
if (!f) {
- dev_err(&dev->pdev->dev, "meclients: registration failed\n");
+ dev_err(dev->dev, "meclients: registration failed\n");
goto err;
}
f = debugfs_create_file("devstate", S_IRUSR, dir,
dev, &mei_dbgfs_fops_devstate);
if (!f) {
- dev_err(&dev->pdev->dev, "devstate: registration failed\n");
+ dev_err(dev->dev, "devstate: registration failed\n");
goto err;
}
dev->dbgfs_dir = dir;
diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index 804106209d76..49a2653d91a5 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -15,16 +15,34 @@
*/
#include <linux/export.h>
-#include <linux/pci.h>
#include <linux/sched.h>
#include <linux/wait.h>
-#include <linux/mei.h>
#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+
+#include <linux/mei.h>
#include "mei_dev.h"
#include "hbm.h"
#include "client.h"
+static const char *mei_hbm_status_str(enum mei_hbm_status status)
+{
+#define MEI_HBM_STATUS(status) case MEI_HBMS_##status: return #status
+ switch (status) {
+ MEI_HBM_STATUS(SUCCESS);
+ MEI_HBM_STATUS(CLIENT_NOT_FOUND);
+ MEI_HBM_STATUS(ALREADY_EXISTS);
+ MEI_HBM_STATUS(REJECTED);
+ MEI_HBM_STATUS(INVALID_PARAMETER);
+ MEI_HBM_STATUS(NOT_ALLOWED);
+ MEI_HBM_STATUS(ALREADY_STARTED);
+ MEI_HBM_STATUS(NOT_STARTED);
+ default: return "unknown";
+ }
+#undef MEI_HBM_STATUS
+};
+
static const char *mei_cl_conn_status_str(enum mei_cl_connect_status status)
{
#define MEI_CL_CS(status) case MEI_CL_CONN_##status: return #status
@@ -39,13 +57,29 @@ static const char *mei_cl_conn_status_str(enum mei_cl_connect_status status)
#undef MEI_CL_CCS
}
+const char *mei_hbm_state_str(enum mei_hbm_state state)
+{
+#define MEI_HBM_STATE(state) case MEI_HBM_##state: return #state
+ switch (state) {
+ MEI_HBM_STATE(IDLE);
+ MEI_HBM_STATE(STARTING);
+ MEI_HBM_STATE(STARTED);
+ MEI_HBM_STATE(ENUM_CLIENTS);
+ MEI_HBM_STATE(CLIENT_PROPERTIES);
+ MEI_HBM_STATE(STOPPED);
+ default:
+ return "unknown";
+ }
+#undef MEI_HBM_STATE
+}
+
/**
* mei_cl_conn_status_to_errno - convert client connect response
* status to error code
*
* @status: client connect response status
*
- * returns corresponding error code
+ * Return: corresponding error code
*/
static int mei_cl_conn_status_to_errno(enum mei_cl_connect_status status)
{
@@ -71,60 +105,54 @@ void mei_hbm_idle(struct mei_device *dev)
}
/**
- * mei_hbm_reset - reset hbm counters and book keeping data structurs
+ * mei_me_cl_remove_all - remove all me clients
*
* @dev: the device structure
*/
-void mei_hbm_reset(struct mei_device *dev)
+static void mei_me_cl_remove_all(struct mei_device *dev)
{
- dev->me_clients_num = 0;
- dev->me_client_presentation_num = 0;
- dev->me_client_index = 0;
-
- kfree(dev->me_clients);
- dev->me_clients = NULL;
+ struct mei_me_client *me_cl, *next;
- mei_hbm_idle(dev);
+ list_for_each_entry_safe(me_cl, next, &dev->me_clients, list) {
+ list_del(&me_cl->list);
+ kfree(me_cl);
+ }
}
/**
- * mei_hbm_me_cl_allocate - allocates storage for me clients
+ * mei_hbm_reset - reset hbm counters and book keeping data structurs
*
* @dev: the device structure
- *
- * returns 0 on success -ENOMEM on allocation failure
*/
-static int mei_hbm_me_cl_allocate(struct mei_device *dev)
+void mei_hbm_reset(struct mei_device *dev)
{
- struct mei_me_client *clients;
- int b;
+ dev->me_client_index = 0;
- mei_hbm_reset(dev);
+ mei_me_cl_remove_all(dev);
- /* count how many ME clients we have */
- for_each_set_bit(b, dev->me_clients_map, MEI_CLIENTS_MAX)
- dev->me_clients_num++;
+ mei_hbm_idle(dev);
+}
- if (dev->me_clients_num == 0)
- return 0;
+/**
+ * mei_hbm_hdr - construct hbm header
+ *
+ * @hdr: hbm header
+ * @length: payload length
+ */
- dev_dbg(&dev->pdev->dev, "memory allocation for ME clients size=%ld.\n",
- dev->me_clients_num * sizeof(struct mei_me_client));
- /* allocate storage for ME clients representation */
- clients = kcalloc(dev->me_clients_num,
- sizeof(struct mei_me_client), GFP_KERNEL);
- if (!clients) {
- dev_err(&dev->pdev->dev, "memory allocation for ME clients failed.\n");
- return -ENOMEM;
- }
- dev->me_clients = clients;
- return 0;
+static inline void mei_hbm_hdr(struct mei_msg_hdr *hdr, size_t length)
+{
+ hdr->host_addr = 0;
+ hdr->me_addr = 0;
+ hdr->length = length;
+ hdr->msg_complete = 1;
+ hdr->reserved = 0;
}
/**
* mei_hbm_cl_hdr - construct client hbm header
*
- * @cl: - client
+ * @cl: client
* @hbm_cmd: host bus message command
* @buf: buffer for cl header
* @len: buffer length
@@ -142,38 +170,87 @@ void mei_hbm_cl_hdr(struct mei_cl *cl, u8 hbm_cmd, void *buf, size_t len)
}
/**
- * mei_hbm_cl_addr_equal - tells if they have the same address
+ * mei_hbm_cl_write - write simple hbm client message
*
- * @cl: - client
- * @buf: buffer with cl header
+ * @dev: the device structure
+ * @cl: client
+ * @hbm_cmd: host bus message command
+ * @len: buffer length
*
- * returns true if addresses are the same
+ * Return: 0 on success, <0 on failure.
*/
static inline
-bool mei_hbm_cl_addr_equal(struct mei_cl *cl, void *buf)
+int mei_hbm_cl_write(struct mei_device *dev,
+ struct mei_cl *cl, u8 hbm_cmd, size_t len)
+{
+ struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
+
+ mei_hbm_hdr(mei_hdr, len);
+ mei_hbm_cl_hdr(cl, hbm_cmd, dev->wr_msg.data, len);
+
+ return mei_write_message(dev, mei_hdr, dev->wr_msg.data);
+}
+
+/**
+ * mei_hbm_cl_addr_equal - check if the client's and
+ * the message address match
+ *
+ * @cl: client
+ * @cmd: hbm client message
+ *
+ * Return: true if addresses are the same
+ */
+static inline
+bool mei_hbm_cl_addr_equal(struct mei_cl *cl, struct mei_hbm_cl_cmd *cmd)
{
- struct mei_hbm_cl_cmd *cmd = buf;
return cl->host_client_id == cmd->host_addr &&
cl->me_client_id == cmd->me_addr;
}
+/**
+ * mei_hbm_cl_find_by_cmd - find recipient client
+ *
+ * @dev: the device structure
+ * @buf: a buffer with hbm cl command
+ *
+ * Return: the recipient client or NULL if not found
+ */
+static inline
+struct mei_cl *mei_hbm_cl_find_by_cmd(struct mei_device *dev, void *buf)
+{
+ struct mei_hbm_cl_cmd *cmd = (struct mei_hbm_cl_cmd *)buf;
+ struct mei_cl *cl;
+
+ list_for_each_entry(cl, &dev->file_list, link)
+ if (mei_hbm_cl_addr_equal(cl, cmd))
+ return cl;
+ return NULL;
+}
+
+/**
+ * mei_hbm_start_wait - wait for start response message.
+ *
+ * @dev: the device structure
+ *
+ * Return: 0 on success and < 0 on failure
+ */
int mei_hbm_start_wait(struct mei_device *dev)
{
int ret;
- if (dev->hbm_state > MEI_HBM_START)
+
+ if (dev->hbm_state > MEI_HBM_STARTING)
return 0;
mutex_unlock(&dev->device_lock);
- ret = wait_event_interruptible_timeout(dev->wait_recvd_msg,
- dev->hbm_state == MEI_HBM_IDLE ||
- dev->hbm_state >= MEI_HBM_STARTED,
+ ret = wait_event_timeout(dev->wait_hbm_start,
+ dev->hbm_state != MEI_HBM_STARTING,
mei_secs_to_jiffies(MEI_HBM_TIMEOUT));
mutex_lock(&dev->device_lock);
- if (ret <= 0 && (dev->hbm_state <= MEI_HBM_START)) {
+ if (ret == 0 && (dev->hbm_state <= MEI_HBM_STARTING)) {
dev->hbm_state = MEI_HBM_IDLE;
- dev_err(&dev->pdev->dev, "waiting for mei start failed\n");
+ dev_err(dev->dev, "waiting for mei start failed\n");
return -ETIME;
}
return 0;
@@ -184,7 +261,7 @@ int mei_hbm_start_wait(struct mei_device *dev)
*
* @dev: the device structure
*
- * returns 0 on success and < 0 on failure
+ * Return: 0 on success and < 0 on failure
*/
int mei_hbm_start_req(struct mei_device *dev)
{
@@ -193,6 +270,8 @@ int mei_hbm_start_req(struct mei_device *dev)
const size_t len = sizeof(struct hbm_host_version_request);
int ret;
+ mei_hbm_reset(dev);
+
mei_hbm_hdr(mei_hdr, len);
/* host start message */
@@ -205,12 +284,12 @@ int mei_hbm_start_req(struct mei_device *dev)
dev->hbm_state = MEI_HBM_IDLE;
ret = mei_write_message(dev, mei_hdr, dev->wr_msg.data);
if (ret) {
- dev_err(&dev->pdev->dev, "version message write failed: ret = %d\n",
+ dev_err(dev->dev, "version message write failed: ret = %d\n",
ret);
return ret;
}
- dev->hbm_state = MEI_HBM_START;
+ dev->hbm_state = MEI_HBM_STARTING;
dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
return 0;
}
@@ -220,7 +299,7 @@ int mei_hbm_start_req(struct mei_device *dev)
*
* @dev: the device structure
*
- * returns 0 on success and < 0 on failure
+ * Return: 0 on success and < 0 on failure
*/
static int mei_hbm_enum_clients_req(struct mei_device *dev)
{
@@ -238,7 +317,7 @@ static int mei_hbm_enum_clients_req(struct mei_device *dev)
ret = mei_write_message(dev, mei_hdr, dev->wr_msg.data);
if (ret) {
- dev_err(&dev->pdev->dev, "enumeration request write failed: ret = %d.\n",
+ dev_err(dev->dev, "enumeration request write failed: ret = %d.\n",
ret);
return ret;
}
@@ -247,12 +326,38 @@ static int mei_hbm_enum_clients_req(struct mei_device *dev)
return 0;
}
+/*
+ * mei_hbm_me_cl_add - add new me client to the list
+ *
+ * @dev: the device structure
+ * @res: hbm property response
+ *
+ * Return: 0 on success and -ENOMEM on allocation failure
+ */
+
+static int mei_hbm_me_cl_add(struct mei_device *dev,
+ struct hbm_props_response *res)
+{
+ struct mei_me_client *me_cl;
+
+ me_cl = kzalloc(sizeof(struct mei_me_client), GFP_KERNEL);
+ if (!me_cl)
+ return -ENOMEM;
+
+ me_cl->props = res->client_properties;
+ me_cl->client_id = res->me_addr;
+ me_cl->mei_flow_ctrl_creds = 0;
+
+ list_add(&me_cl->list, &dev->me_clients);
+ return 0;
+}
+
/**
* mei_hbm_prop_req - request property for a single client
*
* @dev: the device structure
*
- * returns 0 on success and < 0 on failure
+ * Return: 0 on success and < 0 on failure
*/
static int mei_hbm_prop_req(struct mei_device *dev)
@@ -262,11 +367,8 @@ static int mei_hbm_prop_req(struct mei_device *dev)
struct hbm_props_request *prop_req;
const size_t len = sizeof(struct hbm_props_request);
unsigned long next_client_index;
- unsigned long client_num;
int ret;
- client_num = dev->me_client_presentation_num;
-
next_client_index = find_next_bit(dev->me_clients_map, MEI_CLIENTS_MAX,
dev->me_client_index);
@@ -278,21 +380,17 @@ static int mei_hbm_prop_req(struct mei_device *dev)
return 0;
}
- dev->me_clients[client_num].client_id = next_client_index;
- dev->me_clients[client_num].mei_flow_ctrl_creds = 0;
-
mei_hbm_hdr(mei_hdr, len);
prop_req = (struct hbm_props_request *)dev->wr_msg.data;
memset(prop_req, 0, sizeof(struct hbm_props_request));
-
prop_req->hbm_cmd = HOST_CLIENT_PROPERTIES_REQ_CMD;
- prop_req->address = next_client_index;
+ prop_req->me_addr = next_client_index;
ret = mei_write_message(dev, mei_hdr, dev->wr_msg.data);
if (ret) {
- dev_err(&dev->pdev->dev, "properties request write failed: ret = %d\n",
+ dev_err(dev->dev, "properties request write failed: ret = %d\n",
ret);
return ret;
}
@@ -309,7 +407,8 @@ static int mei_hbm_prop_req(struct mei_device *dev)
* @dev: the device structure
* @pg_cmd: the pg command code
*
- * This function returns -EIO on write failure
+ * Return: -EIO on write failure
+ * -EOPNOTSUPP if the operation is not supported by the protocol
*/
int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd)
{
@@ -318,6 +417,9 @@ int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd)
const size_t len = sizeof(struct hbm_power_gate);
int ret;
+ if (!dev->hbm_f_pg_supported)
+ return -EOPNOTSUPP;
+
mei_hbm_hdr(mei_hdr, len);
req = (struct hbm_power_gate *)dev->wr_msg.data;
@@ -326,7 +428,7 @@ int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd)
ret = mei_write_message(dev, mei_hdr, dev->wr_msg.data);
if (ret)
- dev_err(&dev->pdev->dev, "power gate command write failed.\n");
+ dev_err(dev->dev, "power gate command write failed.\n");
return ret;
}
EXPORT_SYMBOL_GPL(mei_hbm_pg);
@@ -334,10 +436,9 @@ EXPORT_SYMBOL_GPL(mei_hbm_pg);
/**
* mei_hbm_stop_req - send stop request message
*
- * @dev - mei device
- * @cl: client info
+ * @dev: mei device
*
- * This function returns -EIO on write failure
+ * Return: -EIO on write failure
*/
static int mei_hbm_stop_req(struct mei_device *dev)
{
@@ -361,19 +462,14 @@ static int mei_hbm_stop_req(struct mei_device *dev)
* @dev: the device structure
* @cl: client info
*
- * This function returns -EIO on write failure
+ * Return: -EIO on write failure
*/
int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl)
{
- struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
const size_t len = sizeof(struct hbm_flow_control);
- mei_hbm_hdr(mei_hdr, len);
- mei_hbm_cl_hdr(cl, MEI_FLOW_CONTROL_CMD, dev->wr_msg.data, len);
-
cl_dbg(dev, cl, "sending flow control\n");
-
- return mei_write_message(dev, mei_hdr, dev->wr_msg.data);
+ return mei_hbm_cl_write(dev, cl, MEI_FLOW_CONTROL_CMD, len);
}
/**
@@ -382,31 +478,26 @@ int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl)
* @dev: the device structure
* @flow: flow control.
*
- * return 0 on success, < 0 otherwise
+ * Return: 0 on success, < 0 otherwise
*/
static int mei_hbm_add_single_flow_creds(struct mei_device *dev,
struct hbm_flow_control *flow)
{
struct mei_me_client *me_cl;
- int id;
- id = mei_me_cl_by_id(dev, flow->me_addr);
- if (id < 0) {
- dev_err(&dev->pdev->dev, "no such me client %d\n",
+ me_cl = mei_me_cl_by_id(dev, flow->me_addr);
+ if (!me_cl) {
+ dev_err(dev->dev, "no such me client %d\n",
flow->me_addr);
- return id;
+ return -ENOENT;
}
- me_cl = &dev->me_clients[id];
- if (me_cl->props.single_recv_buf) {
- me_cl->mei_flow_ctrl_creds++;
- dev_dbg(&dev->pdev->dev, "recv flow ctrl msg ME %d (single).\n",
- flow->me_addr);
- dev_dbg(&dev->pdev->dev, "flow control credentials =%d.\n",
- me_cl->mei_flow_ctrl_creds);
- } else {
- BUG(); /* error in flow control */
- }
+ if (WARN_ON(me_cl->props.single_recv_buf == 0))
+ return -EINVAL;
+
+ me_cl->mei_flow_ctrl_creds++;
+ dev_dbg(dev->dev, "recv flow ctrl msg ME %d (single) creds = %d.\n",
+ flow->me_addr, me_cl->mei_flow_ctrl_creds);
return 0;
}
@@ -418,7 +509,7 @@ static int mei_hbm_add_single_flow_creds(struct mei_device *dev,
* @flow_control: flow control response bus message
*/
static void mei_hbm_cl_flow_control_res(struct mei_device *dev,
- struct hbm_flow_control *flow_control)
+ struct hbm_flow_control *flow_control)
{
struct mei_cl *cl;
@@ -428,16 +519,11 @@ static void mei_hbm_cl_flow_control_res(struct mei_device *dev,
return;
}
- /* normal connection */
- list_for_each_entry(cl, &dev->file_list, link) {
- if (mei_hbm_cl_addr_equal(cl, flow_control)) {
- cl->mei_flow_ctrl_creds++;
- dev_dbg(&dev->pdev->dev, "flow ctrl msg for host %d ME %d.\n",
- flow_control->host_addr, flow_control->me_addr);
- dev_dbg(&dev->pdev->dev, "flow control credentials = %d.\n",
- cl->mei_flow_ctrl_creds);
- break;
- }
+ cl = mei_hbm_cl_find_by_cmd(dev, flow_control);
+ if (cl) {
+ cl->mei_flow_ctrl_creds++;
+ cl_dbg(dev, cl, "flow control creds = %d.\n",
+ cl->mei_flow_ctrl_creds);
}
}
@@ -448,17 +534,13 @@ static void mei_hbm_cl_flow_control_res(struct mei_device *dev,
* @dev: the device structure
* @cl: a client to disconnect from
*
- * This function returns -EIO on write failure
+ * Return: -EIO on write failure
*/
int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl)
{
- struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
const size_t len = sizeof(struct hbm_client_connect_request);
- mei_hbm_hdr(mei_hdr, len);
- mei_hbm_cl_hdr(cl, CLIENT_DISCONNECT_REQ_CMD, dev->wr_msg.data, len);
-
- return mei_write_message(dev, mei_hdr, dev->wr_msg.data);
+ return mei_hbm_cl_write(dev, cl, CLIENT_DISCONNECT_REQ_CMD, len);
}
/**
@@ -467,53 +549,34 @@ int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl)
* @dev: the device structure
* @cl: a client to disconnect from
*
- * This function returns -EIO on write failure
+ * Return: -EIO on write failure
*/
int mei_hbm_cl_disconnect_rsp(struct mei_device *dev, struct mei_cl *cl)
{
- struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
const size_t len = sizeof(struct hbm_client_connect_response);
- mei_hbm_hdr(mei_hdr, len);
- mei_hbm_cl_hdr(cl, CLIENT_DISCONNECT_RES_CMD, dev->wr_msg.data, len);
-
- return mei_write_message(dev, mei_hdr, dev->wr_msg.data);
+ return mei_hbm_cl_write(dev, cl, CLIENT_DISCONNECT_RES_CMD, len);
}
/**
- * mei_hbm_cl_disconnect_res - disconnect response from ME
+ * mei_hbm_cl_disconnect_res - update the client state according
+ * disconnect response
*
- * @dev: the device structure
- * @rs: disconnect response bus message
+ * @cl: mei host client
+ * @cmd: disconnect client response host bus message
*/
-static void mei_hbm_cl_disconnect_res(struct mei_device *dev,
- struct hbm_client_connect_response *rs)
+static void mei_hbm_cl_disconnect_res(struct mei_cl *cl,
+ struct mei_hbm_cl_cmd *cmd)
{
- struct mei_cl *cl;
- struct mei_cl_cb *cb, *next;
+ struct hbm_client_connect_response *rs =
+ (struct hbm_client_connect_response *)cmd;
- dev_dbg(&dev->pdev->dev, "hbm: disconnect response cl:host=%02d me=%02d status=%d\n",
+ dev_dbg(cl->dev->dev, "hbm: disconnect response cl:host=%02d me=%02d status=%d\n",
rs->me_addr, rs->host_addr, rs->status);
- list_for_each_entry_safe(cb, next, &dev->ctrl_rd_list.list, list) {
- cl = cb->cl;
-
- /* this should not happen */
- if (WARN_ON(!cl)) {
- list_del(&cb->list);
- return;
- }
-
- if (mei_hbm_cl_addr_equal(cl, rs)) {
- list_del(&cb->list);
- if (rs->status == MEI_CL_DISCONN_SUCCESS)
- cl->state = MEI_FILE_DISCONNECTED;
-
- cl->status = 0;
- cl->timer_count = 0;
- break;
- }
- }
+ if (rs->status == MEI_CL_DISCONN_SUCCESS)
+ cl->state = MEI_FILE_DISCONNECTED;
+ cl->status = 0;
}
/**
@@ -522,38 +585,55 @@ static void mei_hbm_cl_disconnect_res(struct mei_device *dev,
* @dev: the device structure
* @cl: a client to connect to
*
- * returns -EIO on write failure
+ * Return: -EIO on write failure
*/
int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl)
{
- struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
const size_t len = sizeof(struct hbm_client_connect_request);
- mei_hbm_hdr(mei_hdr, len);
- mei_hbm_cl_hdr(cl, CLIENT_CONNECT_REQ_CMD, dev->wr_msg.data, len);
+ return mei_hbm_cl_write(dev, cl, CLIENT_CONNECT_REQ_CMD, len);
+}
- return mei_write_message(dev, mei_hdr, dev->wr_msg.data);
+/**
+ * mei_hbm_cl_connect_res - update the client state according
+ * connection response
+ *
+ * @cl: mei host client
+ * @cmd: connect client response host bus message
+ */
+static void mei_hbm_cl_connect_res(struct mei_cl *cl,
+ struct mei_hbm_cl_cmd *cmd)
+{
+ struct hbm_client_connect_response *rs =
+ (struct hbm_client_connect_response *)cmd;
+
+ dev_dbg(cl->dev->dev, "hbm: connect response cl:host=%02d me=%02d status=%s\n",
+ rs->me_addr, rs->host_addr,
+ mei_cl_conn_status_str(rs->status));
+
+ if (rs->status == MEI_CL_CONN_SUCCESS)
+ cl->state = MEI_FILE_CONNECTED;
+ else
+ cl->state = MEI_FILE_DISCONNECTED;
+ cl->status = mei_cl_conn_status_to_errno(rs->status);
}
/**
- * mei_hbm_cl_connect_res - connect response from the ME
+ * mei_hbm_cl_res - process hbm response received on behalf
+ * an client
*
* @dev: the device structure
- * @rs: connect response bus message
+ * @rs: hbm client message
+ * @fop_type: file operation type
*/
-static void mei_hbm_cl_connect_res(struct mei_device *dev,
- struct hbm_client_connect_response *rs)
+static void mei_hbm_cl_res(struct mei_device *dev,
+ struct mei_hbm_cl_cmd *rs,
+ enum mei_cb_file_ops fop_type)
{
-
struct mei_cl *cl;
struct mei_cl_cb *cb, *next;
- dev_dbg(&dev->pdev->dev, "hbm: connect response cl:host=%02d me=%02d status=%s\n",
- rs->me_addr, rs->host_addr,
- mei_cl_conn_status_str(rs->status));
-
cl = NULL;
-
list_for_each_entry_safe(cb, next, &dev->ctrl_rd_list.list, list) {
cl = cb->cl;
@@ -563,7 +643,7 @@ static void mei_hbm_cl_connect_res(struct mei_device *dev,
continue;
}
- if (cb->fop_type != MEI_FOP_CONNECT)
+ if (cb->fop_type != fop_type)
continue;
if (mei_hbm_cl_addr_equal(cl, rs)) {
@@ -575,12 +655,19 @@ static void mei_hbm_cl_connect_res(struct mei_device *dev,
if (!cl)
return;
+ switch (fop_type) {
+ case MEI_FOP_CONNECT:
+ mei_hbm_cl_connect_res(cl, rs);
+ break;
+ case MEI_FOP_DISCONNECT:
+ mei_hbm_cl_disconnect_res(cl, rs);
+ break;
+ default:
+ return;
+ }
+
cl->timer_count = 0;
- if (rs->status == MEI_CL_CONN_SUCCESS)
- cl->state = MEI_FILE_CONNECTED;
- else
- cl->state = MEI_FILE_DISCONNECTED;
- cl->status = mei_cl_conn_status_to_errno(rs->status);
+ wake_up(&cl->wait);
}
@@ -591,7 +678,7 @@ static void mei_hbm_cl_connect_res(struct mei_device *dev,
* @dev: the device structure.
* @disconnect_req: disconnect request bus message from the me
*
- * returns -ENOMEM on allocation failure
+ * Return: -ENOMEM on allocation failure
*/
static int mei_hbm_fw_disconnect_req(struct mei_device *dev,
struct hbm_client_connect_request *disconnect_req)
@@ -599,34 +686,46 @@ static int mei_hbm_fw_disconnect_req(struct mei_device *dev,
struct mei_cl *cl;
struct mei_cl_cb *cb;
- list_for_each_entry(cl, &dev->file_list, link) {
- if (mei_hbm_cl_addr_equal(cl, disconnect_req)) {
- dev_dbg(&dev->pdev->dev, "disconnect request host client %d ME client %d.\n",
- disconnect_req->host_addr,
- disconnect_req->me_addr);
- cl->state = MEI_FILE_DISCONNECTED;
- cl->timer_count = 0;
-
- cb = mei_io_cb_init(cl, NULL);
- if (!cb)
- return -ENOMEM;
- cb->fop_type = MEI_FOP_DISCONNECT_RSP;
- cl_dbg(dev, cl, "add disconnect response as first\n");
- list_add(&cb->list, &dev->ctrl_wr_list.list);
+ cl = mei_hbm_cl_find_by_cmd(dev, disconnect_req);
+ if (cl) {
+ cl_dbg(dev, cl, "disconnect request received\n");
+ cl->state = MEI_FILE_DISCONNECTED;
+ cl->timer_count = 0;
- break;
- }
+ cb = mei_io_cb_init(cl, NULL);
+ if (!cb)
+ return -ENOMEM;
+ cb->fop_type = MEI_FOP_DISCONNECT_RSP;
+ cl_dbg(dev, cl, "add disconnect response as first\n");
+ list_add(&cb->list, &dev->ctrl_wr_list.list);
}
return 0;
}
+/**
+ * mei_hbm_config_features - check what hbm features and commands
+ * are supported by the fw
+ *
+ * @dev: the device structure
+ */
+static void mei_hbm_config_features(struct mei_device *dev)
+{
+ /* Power Gating Isolation Support */
+ dev->hbm_f_pg_supported = 0;
+ if (dev->version.major_version > HBM_MAJOR_VERSION_PGI)
+ dev->hbm_f_pg_supported = 1;
+
+ if (dev->version.major_version == HBM_MAJOR_VERSION_PGI &&
+ dev->version.minor_version >= HBM_MINOR_VERSION_PGI)
+ dev->hbm_f_pg_supported = 1;
+}
/**
* mei_hbm_version_is_supported - checks whether the driver can
* support the hbm version of the device
*
* @dev: the device structure
- * returns true if driver can support hbm version of the device
+ * Return: true if driver can support hbm version of the device
*/
bool mei_hbm_version_is_supported(struct mei_device *dev)
{
@@ -640,44 +739,44 @@ bool mei_hbm_version_is_supported(struct mei_device *dev)
* handle the read bus message cmd processing.
*
* @dev: the device structure
- * @mei_hdr: header of bus message
+ * @hdr: header of bus message
*
- * returns 0 on success and < 0 on failure
+ * Return: 0 on success and < 0 on failure
*/
int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
{
struct mei_bus_message *mei_msg;
- struct mei_me_client *me_client;
struct hbm_host_version_response *version_res;
- struct hbm_client_connect_response *connect_res;
- struct hbm_client_connect_response *disconnect_res;
- struct hbm_client_connect_request *disconnect_req;
- struct hbm_flow_control *flow_control;
struct hbm_props_response *props_res;
struct hbm_host_enum_response *enum_res;
+ struct mei_hbm_cl_cmd *cl_cmd;
+ struct hbm_client_connect_request *disconnect_req;
+ struct hbm_flow_control *flow_control;
+
/* read the message to our buffer */
BUG_ON(hdr->length >= sizeof(dev->rd_msg_buf));
mei_read_slots(dev, dev->rd_msg_buf, hdr->length);
mei_msg = (struct mei_bus_message *)dev->rd_msg_buf;
+ cl_cmd = (struct mei_hbm_cl_cmd *)mei_msg;
/* ignore spurious message and prevent reset nesting
* hbm is put to idle during system reset
*/
if (dev->hbm_state == MEI_HBM_IDLE) {
- dev_dbg(&dev->pdev->dev, "hbm: state is idle ignore spurious messages\n");
+ dev_dbg(dev->dev, "hbm: state is idle ignore spurious messages\n");
return 0;
}
switch (mei_msg->hbm_cmd) {
case HOST_START_RES_CMD:
- dev_dbg(&dev->pdev->dev, "hbm: start: response message received.\n");
+ dev_dbg(dev->dev, "hbm: start: response message received.\n");
dev->init_clients_timer = 0;
version_res = (struct hbm_host_version_response *)mei_msg;
- dev_dbg(&dev->pdev->dev, "HBM VERSION: DRIVER=%02d:%02d DEVICE=%02d:%02d\n",
+ dev_dbg(dev->dev, "HBM VERSION: DRIVER=%02d:%02d DEVICE=%02d:%02d\n",
HBM_MAJOR_VERSION, HBM_MINOR_VERSION,
version_res->me_max_version.major_version,
version_res->me_max_version.minor_version);
@@ -693,19 +792,21 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
}
if (!mei_hbm_version_is_supported(dev)) {
- dev_warn(&dev->pdev->dev, "hbm: start: version mismatch - stopping the driver.\n");
+ dev_warn(dev->dev, "hbm: start: version mismatch - stopping the driver.\n");
dev->hbm_state = MEI_HBM_STOPPED;
if (mei_hbm_stop_req(dev)) {
- dev_err(&dev->pdev->dev, "hbm: start: failed to send stop request\n");
+ dev_err(dev->dev, "hbm: start: failed to send stop request\n");
return -EIO;
}
break;
}
+ mei_hbm_config_features(dev);
+
if (dev->dev_state != MEI_DEV_INIT_CLIENTS ||
- dev->hbm_state != MEI_HBM_START) {
- dev_err(&dev->pdev->dev, "hbm: start: state mismatch, [%d, %d]\n",
+ dev->hbm_state != MEI_HBM_STARTING) {
+ dev_err(dev->dev, "hbm: start: state mismatch, [%d, %d]\n",
dev->dev_state, dev->hbm_state);
return -EPROTO;
}
@@ -713,45 +814,39 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
dev->hbm_state = MEI_HBM_STARTED;
if (mei_hbm_enum_clients_req(dev)) {
- dev_err(&dev->pdev->dev, "hbm: start: failed to send enumeration request\n");
+ dev_err(dev->dev, "hbm: start: failed to send enumeration request\n");
return -EIO;
}
- wake_up_interruptible(&dev->wait_recvd_msg);
+ wake_up(&dev->wait_hbm_start);
break;
case CLIENT_CONNECT_RES_CMD:
- dev_dbg(&dev->pdev->dev, "hbm: client connect response: message received.\n");
-
- connect_res = (struct hbm_client_connect_response *) mei_msg;
- mei_hbm_cl_connect_res(dev, connect_res);
- wake_up(&dev->wait_recvd_msg);
+ dev_dbg(dev->dev, "hbm: client connect response: message received.\n");
+ mei_hbm_cl_res(dev, cl_cmd, MEI_FOP_CONNECT);
break;
case CLIENT_DISCONNECT_RES_CMD:
- dev_dbg(&dev->pdev->dev, "hbm: client disconnect response: message received.\n");
-
- disconnect_res = (struct hbm_client_connect_response *) mei_msg;
- mei_hbm_cl_disconnect_res(dev, disconnect_res);
- wake_up(&dev->wait_recvd_msg);
+ dev_dbg(dev->dev, "hbm: client disconnect response: message received.\n");
+ mei_hbm_cl_res(dev, cl_cmd, MEI_FOP_DISCONNECT);
break;
case MEI_FLOW_CONTROL_CMD:
- dev_dbg(&dev->pdev->dev, "hbm: client flow control response: message received.\n");
+ dev_dbg(dev->dev, "hbm: client flow control response: message received.\n");
flow_control = (struct hbm_flow_control *) mei_msg;
mei_hbm_cl_flow_control_res(dev, flow_control);
break;
case MEI_PG_ISOLATION_ENTRY_RES_CMD:
- dev_dbg(&dev->pdev->dev, "power gate isolation entry response received\n");
+ dev_dbg(dev->dev, "power gate isolation entry response received\n");
dev->pg_event = MEI_PG_EVENT_RECEIVED;
if (waitqueue_active(&dev->wait_pg))
wake_up(&dev->wait_pg);
break;
case MEI_PG_ISOLATION_EXIT_REQ_CMD:
- dev_dbg(&dev->pdev->dev, "power gate isolation exit request received\n");
+ dev_dbg(dev->dev, "power gate isolation exit request received\n");
dev->pg_event = MEI_PG_EVENT_RECEIVED;
if (waitqueue_active(&dev->wait_pg))
wake_up(&dev->wait_pg);
@@ -761,44 +856,33 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
* this is HW initiated exit from PG.
* Start runtime pm resume sequence to exit from PG.
*/
- pm_request_resume(&dev->pdev->dev);
+ pm_request_resume(dev->dev);
break;
case HOST_CLIENT_PROPERTIES_RES_CMD:
- dev_dbg(&dev->pdev->dev, "hbm: properties response: message received.\n");
+ dev_dbg(dev->dev, "hbm: properties response: message received.\n");
dev->init_clients_timer = 0;
- if (dev->me_clients == NULL) {
- dev_err(&dev->pdev->dev, "hbm: properties response: mei_clients not allocated\n");
+ if (dev->dev_state != MEI_DEV_INIT_CLIENTS ||
+ dev->hbm_state != MEI_HBM_CLIENT_PROPERTIES) {
+ dev_err(dev->dev, "hbm: properties response: state mismatch, [%d, %d]\n",
+ dev->dev_state, dev->hbm_state);
return -EPROTO;
}
props_res = (struct hbm_props_response *)mei_msg;
- me_client = &dev->me_clients[dev->me_client_presentation_num];
if (props_res->status) {
- dev_err(&dev->pdev->dev, "hbm: properties response: wrong status = %d\n",
- props_res->status);
+ dev_err(dev->dev, "hbm: properties response: wrong status = %d %s\n",
+ props_res->status,
+ mei_hbm_status_str(props_res->status));
return -EPROTO;
}
- if (me_client->client_id != props_res->address) {
- dev_err(&dev->pdev->dev, "hbm: properties response: address mismatch %d ?= %d\n",
- me_client->client_id, props_res->address);
- return -EPROTO;
- }
+ mei_hbm_me_cl_add(dev, props_res);
- if (dev->dev_state != MEI_DEV_INIT_CLIENTS ||
- dev->hbm_state != MEI_HBM_CLIENT_PROPERTIES) {
- dev_err(&dev->pdev->dev, "hbm: properties response: state mismatch, [%d, %d]\n",
- dev->dev_state, dev->hbm_state);
- return -EPROTO;
- }
-
- me_client->props = props_res->client_properties;
dev->me_client_index++;
- dev->me_client_presentation_num++;
/* request property for the next client */
if (mei_hbm_prop_req(dev))
@@ -807,7 +891,7 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
break;
case HOST_ENUM_RES_CMD:
- dev_dbg(&dev->pdev->dev, "hbm: enumeration response: message received\n");
+ dev_dbg(dev->dev, "hbm: enumeration response: message received\n");
dev->init_clients_timer = 0;
@@ -815,20 +899,15 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
BUILD_BUG_ON(sizeof(dev->me_clients_map)
< sizeof(enum_res->valid_addresses));
memcpy(dev->me_clients_map, enum_res->valid_addresses,
- sizeof(enum_res->valid_addresses));
+ sizeof(enum_res->valid_addresses));
if (dev->dev_state != MEI_DEV_INIT_CLIENTS ||
dev->hbm_state != MEI_HBM_ENUM_CLIENTS) {
- dev_err(&dev->pdev->dev, "hbm: enumeration response: state mismatch, [%d, %d]\n",
+ dev_err(dev->dev, "hbm: enumeration response: state mismatch, [%d, %d]\n",
dev->dev_state, dev->hbm_state);
return -EPROTO;
}
- if (mei_hbm_me_cl_allocate(dev)) {
- dev_err(&dev->pdev->dev, "hbm: enumeration response: cannot allocate clients array\n");
- return -ENOMEM;
- }
-
dev->hbm_state = MEI_HBM_CLIENT_PROPERTIES;
/* first property request */
@@ -838,34 +917,34 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
break;
case HOST_STOP_RES_CMD:
- dev_dbg(&dev->pdev->dev, "hbm: stop response: message received\n");
+ dev_dbg(dev->dev, "hbm: stop response: message received\n");
dev->init_clients_timer = 0;
if (dev->hbm_state != MEI_HBM_STOPPED) {
- dev_err(&dev->pdev->dev, "hbm: stop response: state mismatch, [%d, %d]\n",
+ dev_err(dev->dev, "hbm: stop response: state mismatch, [%d, %d]\n",
dev->dev_state, dev->hbm_state);
return -EPROTO;
}
dev->dev_state = MEI_DEV_POWER_DOWN;
- dev_info(&dev->pdev->dev, "hbm: stop response: resetting.\n");
+ dev_info(dev->dev, "hbm: stop response: resetting.\n");
/* force the reset */
return -EPROTO;
break;
case CLIENT_DISCONNECT_REQ_CMD:
- dev_dbg(&dev->pdev->dev, "hbm: disconnect request: message received\n");
+ dev_dbg(dev->dev, "hbm: disconnect request: message received\n");
disconnect_req = (struct hbm_client_connect_request *)mei_msg;
mei_hbm_fw_disconnect_req(dev, disconnect_req);
break;
case ME_STOP_REQ_CMD:
- dev_dbg(&dev->pdev->dev, "hbm: stop request: message received\n");
+ dev_dbg(dev->dev, "hbm: stop request: message received\n");
dev->hbm_state = MEI_HBM_STOPPED;
if (mei_hbm_stop_req(dev)) {
- dev_err(&dev->pdev->dev, "hbm: start: failed to send stop request\n");
+ dev_err(dev->dev, "hbm: stop request: failed to send stop request\n");
return -EIO;
}
break;
diff --git a/drivers/misc/mei/hbm.h b/drivers/misc/mei/hbm.h
index 683eb2835cec..b7cd3d857fd5 100644
--- a/drivers/misc/mei/hbm.h
+++ b/drivers/misc/mei/hbm.h
@@ -25,29 +25,24 @@ struct mei_cl;
* enum mei_hbm_state - host bus message protocol state
*
* @MEI_HBM_IDLE : protocol not started
- * @MEI_HBM_START : start request message was sent
+ * @MEI_HBM_STARTING : start request message was sent
+ * @MEI_HBM_STARTED : start reply message was received
* @MEI_HBM_ENUM_CLIENTS : enumeration request was sent
* @MEI_HBM_CLIENT_PROPERTIES : acquiring clients properties
+ * @MEI_HBM_STOPPED : stopping exchange
*/
enum mei_hbm_state {
MEI_HBM_IDLE = 0,
- MEI_HBM_START,
+ MEI_HBM_STARTING,
MEI_HBM_STARTED,
MEI_HBM_ENUM_CLIENTS,
MEI_HBM_CLIENT_PROPERTIES,
MEI_HBM_STOPPED,
};
-int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr);
+const char *mei_hbm_state_str(enum mei_hbm_state state);
-static inline void mei_hbm_hdr(struct mei_msg_hdr *hdr, size_t length)
-{
- hdr->host_addr = 0;
- hdr->me_addr = 0;
- hdr->length = length;
- hdr->msg_complete = 1;
- hdr->reserved = 0;
-}
+int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr);
void mei_hbm_idle(struct mei_device *dev);
void mei_hbm_reset(struct mei_device *dev);
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c
index a9a0d08f758e..4f2fd6fc1e23 100644
--- a/drivers/misc/mei/hw-me.c
+++ b/drivers/misc/mei/hw-me.c
@@ -28,10 +28,10 @@
/**
* mei_me_reg_read - Reads 32bit data from the mei device
*
- * @dev: the device structure
+ * @hw: the me hardware structure
* @offset: offset from which to read the data
*
- * returns register value (u32)
+ * Return: register value (u32)
*/
static inline u32 mei_me_reg_read(const struct mei_me_hw *hw,
unsigned long offset)
@@ -43,7 +43,7 @@ static inline u32 mei_me_reg_read(const struct mei_me_hw *hw,
/**
* mei_me_reg_write - Writes 32bit data to the mei device
*
- * @dev: the device structure
+ * @hw: the me hardware structure
* @offset: offset from which to write the data
* @value: register value to write (u32)
*/
@@ -59,7 +59,7 @@ static inline void mei_me_reg_write(const struct mei_me_hw *hw,
*
* @dev: the device structure
*
- * returns ME_CB_RW register value (u32)
+ * Return: ME_CB_RW register value (u32)
*/
static u32 mei_me_mecbrw_read(const struct mei_device *dev)
{
@@ -68,9 +68,9 @@ static u32 mei_me_mecbrw_read(const struct mei_device *dev)
/**
* mei_me_mecsr_read - Reads 32bit data from the ME CSR
*
- * @dev: the device structure
+ * @hw: the me hardware structure
*
- * returns ME_CSR_HA register value (u32)
+ * Return: ME_CSR_HA register value (u32)
*/
static inline u32 mei_me_mecsr_read(const struct mei_me_hw *hw)
{
@@ -80,9 +80,9 @@ static inline u32 mei_me_mecsr_read(const struct mei_me_hw *hw)
/**
* mei_hcsr_read - Reads 32bit data from the host CSR
*
- * @dev: the device structure
+ * @hw: the me hardware structure
*
- * returns H_CSR register value (u32)
+ * Return: H_CSR register value (u32)
*/
static inline u32 mei_hcsr_read(const struct mei_me_hw *hw)
{
@@ -93,7 +93,8 @@ static inline u32 mei_hcsr_read(const struct mei_me_hw *hw)
* mei_hcsr_set - writes H_CSR register to the mei device,
* and ignores the H_IS bit for it is write-one-to-zero.
*
- * @dev: the device structure
+ * @hw: the me hardware structure
+ * @hcsr: new register value
*/
static inline void mei_hcsr_set(struct mei_me_hw *hw, u32 hcsr)
{
@@ -101,6 +102,36 @@ static inline void mei_hcsr_set(struct mei_me_hw *hw, u32 hcsr)
mei_me_reg_write(hw, H_CSR, hcsr);
}
+/**
+ * mei_me_fw_status - read fw status register from pci config space
+ *
+ * @dev: mei device
+ * @fw_status: fw status register values
+ *
+ * Return: 0 on success, error otherwise
+ */
+static int mei_me_fw_status(struct mei_device *dev,
+ struct mei_fw_status *fw_status)
+{
+ struct pci_dev *pdev = to_pci_dev(dev->dev);
+ struct mei_me_hw *hw = to_me_hw(dev);
+ const struct mei_fw_status *fw_src = &hw->cfg->fw_status;
+ int ret;
+ int i;
+
+ if (!fw_status)
+ return -EINVAL;
+
+ fw_status->count = fw_src->count;
+ for (i = 0; i < fw_src->count && i < MEI_FW_STATUS_MAX; i++) {
+ ret = pci_read_config_dword(pdev,
+ fw_src->status[i], &fw_status->status[i]);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
/**
* mei_me_hw_config - configure hw dependent settings
@@ -121,17 +152,19 @@ static void mei_me_hw_config(struct mei_device *dev)
* mei_me_pg_state - translate internal pg state
* to the mei power gating state
*
- * @hw - me hardware
- * returns: MEI_PG_OFF if aliveness is on and MEI_PG_ON otherwise
+ * @dev: mei device
+ *
+ * Return: MEI_PG_OFF if aliveness is on and MEI_PG_ON otherwise
*/
static inline enum mei_pg_state mei_me_pg_state(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
+
return hw->pg_state;
}
/**
- * mei_clear_interrupts - clear and stop interrupts
+ * mei_me_intr_clear - clear and stop interrupts
*
* @dev: the device structure
*/
@@ -139,6 +172,7 @@ static void mei_me_intr_clear(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
u32 hcsr = mei_hcsr_read(hw);
+
if ((hcsr & H_IS) == H_IS)
mei_me_reg_write(hw, H_CSR, hcsr);
}
@@ -151,12 +185,13 @@ static void mei_me_intr_enable(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
u32 hcsr = mei_hcsr_read(hw);
+
hcsr |= H_IE;
mei_hcsr_set(hw, hcsr);
}
/**
- * mei_disable_interrupts - disables mei device interrupts
+ * mei_me_intr_disable - disables mei device interrupts
*
* @dev: the device structure
*/
@@ -164,6 +199,7 @@ static void mei_me_intr_disable(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
u32 hcsr = mei_hcsr_read(hw);
+
hcsr &= ~H_IE;
mei_hcsr_set(hw, hcsr);
}
@@ -190,6 +226,8 @@ static void mei_me_hw_reset_release(struct mei_device *dev)
*
* @dev: the device structure
* @intr_enable: if interrupt should be enabled after reset.
+ *
+ * Return: always 0
*/
static int mei_me_hw_reset(struct mei_device *dev, bool intr_enable)
{
@@ -213,10 +251,10 @@ static int mei_me_hw_reset(struct mei_device *dev, bool intr_enable)
hcsr = mei_hcsr_read(hw);
if ((hcsr & H_RST) == 0)
- dev_warn(&dev->pdev->dev, "H_RST is not set = 0x%08X", hcsr);
+ dev_warn(dev->dev, "H_RST is not set = 0x%08X", hcsr);
if ((hcsr & H_RDY) == H_RDY)
- dev_warn(&dev->pdev->dev, "H_RDY is not cleared 0x%08X", hcsr);
+ dev_warn(dev->dev, "H_RDY is not cleared 0x%08X", hcsr);
if (intr_enable == false)
mei_me_hw_reset_release(dev);
@@ -227,26 +265,27 @@ static int mei_me_hw_reset(struct mei_device *dev, bool intr_enable)
/**
* mei_me_host_set_ready - enable device
*
- * @dev - mei device
- * returns bool
+ * @dev: mei device
*/
-
static void mei_me_host_set_ready(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
+
hw->host_hw_state = mei_hcsr_read(hw);
hw->host_hw_state |= H_IE | H_IG | H_RDY;
mei_hcsr_set(hw, hw->host_hw_state);
}
+
/**
* mei_me_host_is_ready - check whether the host has turned ready
*
- * @dev - mei device
- * returns bool
+ * @dev: mei device
+ * Return: bool
*/
static bool mei_me_host_is_ready(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
+
hw->host_hw_state = mei_hcsr_read(hw);
return (hw->host_hw_state & H_RDY) == H_RDY;
}
@@ -254,43 +293,53 @@ static bool mei_me_host_is_ready(struct mei_device *dev)
/**
* mei_me_hw_is_ready - check whether the me(hw) has turned ready
*
- * @dev - mei device
- * returns bool
+ * @dev: mei device
+ * Return: bool
*/
static bool mei_me_hw_is_ready(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
+
hw->me_hw_state = mei_me_mecsr_read(hw);
return (hw->me_hw_state & ME_RDY_HRA) == ME_RDY_HRA;
}
+/**
+ * mei_me_hw_ready_wait - wait until the me(hw) has turned ready
+ * or timeout is reached
+ *
+ * @dev: mei device
+ * Return: 0 on success, error otherwise
+ */
static int mei_me_hw_ready_wait(struct mei_device *dev)
{
- int err;
-
mutex_unlock(&dev->device_lock);
- err = wait_event_interruptible_timeout(dev->wait_hw_ready,
+ wait_event_timeout(dev->wait_hw_ready,
dev->recvd_hw_ready,
mei_secs_to_jiffies(MEI_HW_READY_TIMEOUT));
mutex_lock(&dev->device_lock);
- if (!err && !dev->recvd_hw_ready) {
- if (!err)
- err = -ETIME;
- dev_err(&dev->pdev->dev,
- "wait hw ready failed. status = %d\n", err);
- return err;
+ if (!dev->recvd_hw_ready) {
+ dev_err(dev->dev, "wait hw ready failed\n");
+ return -ETIME;
}
dev->recvd_hw_ready = false;
return 0;
}
+/**
+ * mei_me_hw_start - hw start routine
+ *
+ * @dev: mei device
+ * Return: 0 on success, error otherwise
+ */
static int mei_me_hw_start(struct mei_device *dev)
{
int ret = mei_me_hw_ready_wait(dev);
+
if (ret)
return ret;
- dev_dbg(&dev->pdev->dev, "hw is ready\n");
+ dev_dbg(dev->dev, "hw is ready\n");
mei_me_host_set_ready(dev);
return ret;
@@ -302,7 +351,7 @@ static int mei_me_hw_start(struct mei_device *dev)
*
* @dev: the device structure
*
- * returns number of filled slots
+ * Return: number of filled slots
*/
static unsigned char mei_hbuf_filled_slots(struct mei_device *dev)
{
@@ -322,7 +371,7 @@ static unsigned char mei_hbuf_filled_slots(struct mei_device *dev)
*
* @dev: the device structure
*
- * returns true if empty, false - otherwise.
+ * Return: true if empty, false - otherwise.
*/
static bool mei_me_hbuf_is_empty(struct mei_device *dev)
{
@@ -334,7 +383,7 @@ static bool mei_me_hbuf_is_empty(struct mei_device *dev)
*
* @dev: the device structure
*
- * returns -EOVERFLOW if overflow, otherwise empty slots count
+ * Return: -EOVERFLOW if overflow, otherwise empty slots count
*/
static int mei_me_hbuf_empty_slots(struct mei_device *dev)
{
@@ -350,6 +399,13 @@ static int mei_me_hbuf_empty_slots(struct mei_device *dev)
return empty_slots;
}
+/**
+ * mei_me_hbuf_max_len - returns size of hw buffer.
+ *
+ * @dev: the device structure
+ *
+ * Return: size of hw buffer in bytes
+ */
static size_t mei_me_hbuf_max_len(const struct mei_device *dev)
{
return dev->hbuf_depth * sizeof(u32) - sizeof(struct mei_msg_hdr);
@@ -363,7 +419,7 @@ static size_t mei_me_hbuf_max_len(const struct mei_device *dev)
* @header: mei HECI header of message
* @buf: message payload will be written
*
- * This function returns -EIO if write has failed
+ * Return: -EIO if write has failed
*/
static int mei_me_write_message(struct mei_device *dev,
struct mei_msg_hdr *header,
@@ -378,10 +434,10 @@ static int mei_me_write_message(struct mei_device *dev,
int i;
int empty_slots;
- dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(header));
+ dev_dbg(dev->dev, MEI_HDR_FMT, MEI_HDR_PRM(header));
empty_slots = mei_hbuf_empty_slots(dev);
- dev_dbg(&dev->pdev->dev, "empty slots = %hu.\n", empty_slots);
+ dev_dbg(dev->dev, "empty slots = %hu.\n", empty_slots);
dw_cnt = mei_data2slots(length);
if (empty_slots < 0 || dw_cnt > empty_slots)
@@ -395,6 +451,7 @@ static int mei_me_write_message(struct mei_device *dev,
rem = length & 0x3;
if (rem > 0) {
u32 reg = 0;
+
memcpy(&reg, &buf[length - rem], rem);
mei_me_reg_write(hw, H_CB_WW, reg);
}
@@ -412,7 +469,7 @@ static int mei_me_write_message(struct mei_device *dev,
*
* @dev: the device structure
*
- * returns -EOVERFLOW if overflow, otherwise filled slots count
+ * Return: -EOVERFLOW if overflow, otherwise filled slots count
*/
static int mei_me_count_full_read_slots(struct mei_device *dev)
{
@@ -430,7 +487,7 @@ static int mei_me_count_full_read_slots(struct mei_device *dev)
if (filled_slots > buffer_depth)
return -EOVERFLOW;
- dev_dbg(&dev->pdev->dev, "filled_slots =%08x\n", filled_slots);
+ dev_dbg(dev->dev, "filled_slots =%08x\n", filled_slots);
return (int)filled_slots;
}
@@ -440,6 +497,8 @@ static int mei_me_count_full_read_slots(struct mei_device *dev)
* @dev: the device structure
* @buffer: message buffer will be written
* @buffer_length: message size will be read
+ *
+ * Return: always 0
*/
static int mei_me_read_slots(struct mei_device *dev, unsigned char *buffer,
unsigned long buffer_length)
@@ -453,6 +512,7 @@ static int mei_me_read_slots(struct mei_device *dev, unsigned char *buffer,
if (buffer_length > 0) {
u32 reg = mei_me_mecbrw_read(dev);
+
memcpy(reg_buf, &reg, buffer_length);
}
@@ -462,7 +522,7 @@ static int mei_me_read_slots(struct mei_device *dev, unsigned char *buffer,
}
/**
- * mei_me_pg_enter - write pg enter register to mei device.
+ * mei_me_pg_enter - write pg enter register
*
* @dev: the device structure
*/
@@ -470,12 +530,13 @@ static void mei_me_pg_enter(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
u32 reg = mei_me_reg_read(hw, H_HPG_CSR);
+
reg |= H_HPG_CSR_PGI;
mei_me_reg_write(hw, H_HPG_CSR, reg);
}
/**
- * mei_me_pg_enter - write pg enter register to mei device.
+ * mei_me_pg_exit - write pg exit register
*
* @dev: the device structure
*/
@@ -495,7 +556,7 @@ static void mei_me_pg_exit(struct mei_device *dev)
*
* @dev: the device structure
*
- * returns 0 on success an error code otherwise
+ * Return: 0 on success an error code otherwise
*/
int mei_me_pg_set_sync(struct mei_device *dev)
{
@@ -532,7 +593,7 @@ int mei_me_pg_set_sync(struct mei_device *dev)
*
* @dev: the device structure
*
- * returns 0 on success an error code otherwise
+ * Return: 0 on success an error code otherwise
*/
int mei_me_pg_unset_sync(struct mei_device *dev)
{
@@ -569,7 +630,7 @@ reply:
*
* @dev: the device structure
*
- * returns: true is pg supported, false otherwise
+ * Return: true is pg supported, false otherwise
*/
static bool mei_me_pg_is_enabled(struct mei_device *dev)
{
@@ -579,17 +640,13 @@ static bool mei_me_pg_is_enabled(struct mei_device *dev)
if ((reg & ME_PGIC_HRA) == 0)
goto notsupported;
- if (dev->version.major_version < HBM_MAJOR_VERSION_PGI)
- goto notsupported;
-
- if (dev->version.major_version == HBM_MAJOR_VERSION_PGI &&
- dev->version.minor_version < HBM_MINOR_VERSION_PGI)
+ if (!dev->hbm_f_pg_supported)
goto notsupported;
return true;
notsupported:
- dev_dbg(&dev->pdev->dev, "pg: not supported: HGP = %d hbm version %d.%d ?= %d.%d\n",
+ dev_dbg(dev->dev, "pg: not supported: HGP = %d hbm version %d.%d ?= %d.%d\n",
!!(reg & ME_PGIC_HRA),
dev->version.major_version,
dev->version.minor_version,
@@ -605,7 +662,7 @@ notsupported:
* @irq: The irq number
* @dev_id: pointer to the device structure
*
- * returns irqreturn_t
+ * Return: irqreturn_t
*/
irqreturn_t mei_me_irq_quick_handler(int irq, void *dev_id)
@@ -630,7 +687,7 @@ irqreturn_t mei_me_irq_quick_handler(int irq, void *dev_id)
* @irq: The irq number
* @dev_id: pointer to the device structure
*
- * returns irqreturn_t
+ * Return: irqreturn_t
*
*/
irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id)
@@ -640,19 +697,19 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id)
s32 slots;
int rets = 0;
- dev_dbg(&dev->pdev->dev, "function called after ISR to handle the interrupt processing.\n");
+ dev_dbg(dev->dev, "function called after ISR to handle the interrupt processing.\n");
/* initialize our complete list */
mutex_lock(&dev->device_lock);
mei_io_list_init(&complete_list);
/* Ack the interrupt here
* In case of MSI we don't go through the quick handler */
- if (pci_dev_msi_enabled(dev->pdev))
+ if (pci_dev_msi_enabled(to_pci_dev(dev->dev)))
mei_clear_interrupts(dev);
/* check if ME wants a reset */
if (!mei_hw_is_ready(dev) && dev->dev_state != MEI_DEV_RESETTING) {
- dev_warn(&dev->pdev->dev, "FW not ready: resetting.\n");
+ dev_warn(dev->dev, "FW not ready: resetting.\n");
schedule_work(&dev->reset_work);
goto end;
}
@@ -661,19 +718,19 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id)
if (!mei_host_is_ready(dev)) {
if (mei_hw_is_ready(dev)) {
mei_me_hw_reset_release(dev);
- dev_dbg(&dev->pdev->dev, "we need to start the dev.\n");
+ dev_dbg(dev->dev, "we need to start the dev.\n");
dev->recvd_hw_ready = true;
- wake_up_interruptible(&dev->wait_hw_ready);
+ wake_up(&dev->wait_hw_ready);
} else {
- dev_dbg(&dev->pdev->dev, "Spurious Interrupt\n");
+ dev_dbg(dev->dev, "Spurious Interrupt\n");
}
goto end;
}
/* check slots available for reading */
slots = mei_count_full_read_slots(dev);
while (slots > 0) {
- dev_dbg(&dev->pdev->dev, "slots to read = %08x\n", slots);
+ dev_dbg(dev->dev, "slots to read = %08x\n", slots);
rets = mei_irq_read_handler(dev, &complete_list, &slots);
/* There is a race between ME write and interrupt delivery:
* Not all data is always available immediately after the
@@ -683,7 +740,7 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id)
break;
if (rets && dev->dev_state != MEI_DEV_RESETTING) {
- dev_err(&dev->pdev->dev, "mei_irq_read_handler ret = %d.\n",
+ dev_err(dev->dev, "mei_irq_read_handler ret = %d.\n",
rets);
schedule_work(&dev->reset_work);
goto end;
@@ -705,13 +762,14 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id)
mei_irq_compl_handler(dev, &complete_list);
end:
- dev_dbg(&dev->pdev->dev, "interrupt thread end ret = %d\n", rets);
+ dev_dbg(dev->dev, "interrupt thread end ret = %d\n", rets);
mutex_unlock(&dev->device_lock);
return IRQ_HANDLED;
}
static const struct mei_hw_ops mei_me_hw_ops = {
+ .fw_status = mei_me_fw_status,
.pg_state = mei_me_pg_state,
.host_is_ready = mei_me_host_is_ready,
@@ -741,6 +799,7 @@ static const struct mei_hw_ops mei_me_hw_ops = {
static bool mei_me_fw_type_nm(struct pci_dev *pdev)
{
u32 reg;
+
pci_read_config_dword(pdev, PCI_CFG_HFS_2, &reg);
/* make sure that bit 9 (NM) is up and bit 10 (DM) is down */
return (reg & 0x600) == 0x200;
@@ -809,23 +868,22 @@ const struct mei_cfg mei_me_lpt_cfg = {
* @pdev: The pci device structure
* @cfg: per device generation config
*
- * returns The mei_device_device pointer on success, NULL on failure.
+ * Return: The mei_device_device pointer on success, NULL on failure.
*/
struct mei_device *mei_me_dev_init(struct pci_dev *pdev,
const struct mei_cfg *cfg)
{
struct mei_device *dev;
+ struct mei_me_hw *hw;
dev = kzalloc(sizeof(struct mei_device) +
sizeof(struct mei_me_hw), GFP_KERNEL);
if (!dev)
return NULL;
+ hw = to_me_hw(dev);
- mei_device_init(dev, cfg);
-
- dev->ops = &mei_me_hw_ops;
-
- dev->pdev = pdev;
+ mei_device_init(dev, &pdev->dev, &mei_me_hw_ops);
+ hw->cfg = cfg;
return dev;
}
diff --git a/drivers/misc/mei/hw-me.h b/drivers/misc/mei/hw-me.h
index 12b0f4bbe1f1..e6a59a62573a 100644
--- a/drivers/misc/mei/hw-me.h
+++ b/drivers/misc/mei/hw-me.h
@@ -19,14 +19,44 @@
#ifndef _MEI_INTERFACE_H_
#define _MEI_INTERFACE_H_
-#include <linux/mei.h>
#include <linux/irqreturn.h>
+#include <linux/pci.h>
+#include <linux/mei.h>
+
#include "mei_dev.h"
#include "client.h"
+/*
+ * mei_cfg - mei device configuration
+ *
+ * @fw_status: FW status
+ * @quirk_probe: device exclusion quirk
+ */
+struct mei_cfg {
+ const struct mei_fw_status fw_status;
+ bool (*quirk_probe)(struct pci_dev *pdev);
+};
+
+
+#define MEI_PCI_DEVICE(dev, cfg) \
+ .vendor = PCI_VENDOR_ID_INTEL, .device = (dev), \
+ .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, \
+ .driver_data = (kernel_ulong_t)&(cfg)
+
+
#define MEI_ME_RPM_TIMEOUT 500 /* ms */
+/**
+ * struct mei_me_hw - me hw specific data
+ *
+ * @cfg: per device generation config and ops
+ * @mem_addr: io memory address
+ * @host_hw_state: cached host state
+ * @me_hw_state: cached me (fw) state
+ * @pg_state: power gating state
+ */
struct mei_me_hw {
+ const struct mei_cfg *cfg;
void __iomem *mem_addr;
/*
* hw states of host and fw(ME)
diff --git a/drivers/misc/mei/hw-txe.c b/drivers/misc/mei/hw-txe.c
index f1cd166094f2..c5e1902e493f 100644
--- a/drivers/misc/mei/hw-txe.c
+++ b/drivers/misc/mei/hw-txe.c
@@ -28,11 +28,12 @@
#include "hbm.h"
/**
- * mei_txe_reg_read - Reads 32bit data from the device
+ * mei_txe_reg_read - Reads 32bit data from the txe device
*
* @base_addr: registers base address
* @offset: register offset
*
+ * Return: register value
*/
static inline u32 mei_txe_reg_read(void __iomem *base_addr,
unsigned long offset)
@@ -41,7 +42,7 @@ static inline u32 mei_txe_reg_read(void __iomem *base_addr,
}
/**
- * mei_txe_reg_write - Writes 32bit data to the device
+ * mei_txe_reg_write - Writes 32bit data to the txe device
*
* @base_addr: registers base address
* @offset: register offset
@@ -56,10 +57,12 @@ static inline void mei_txe_reg_write(void __iomem *base_addr,
/**
* mei_txe_sec_reg_read_silent - Reads 32bit data from the SeC BAR
*
- * @dev: the device structure
+ * @hw: the txe hardware structure
* @offset: register offset
*
* Doesn't check for aliveness while Reads 32bit data from the SeC BAR
+ *
+ * Return: register value
*/
static inline u32 mei_txe_sec_reg_read_silent(struct mei_txe_hw *hw,
unsigned long offset)
@@ -70,10 +73,12 @@ static inline u32 mei_txe_sec_reg_read_silent(struct mei_txe_hw *hw,
/**
* mei_txe_sec_reg_read - Reads 32bit data from the SeC BAR
*
- * @dev: the device structure
+ * @hw: the txe hardware structure
* @offset: register offset
*
* Reads 32bit data from the SeC BAR and shout loud if aliveness is not set
+ *
+ * Return: register value
*/
static inline u32 mei_txe_sec_reg_read(struct mei_txe_hw *hw,
unsigned long offset)
@@ -85,7 +90,7 @@ static inline u32 mei_txe_sec_reg_read(struct mei_txe_hw *hw,
* mei_txe_sec_reg_write_silent - Writes 32bit data to the SeC BAR
* doesn't check for aliveness
*
- * @dev: the device structure
+ * @hw: the txe hardware structure
* @offset: register offset
* @value: value to write
*
@@ -100,7 +105,7 @@ static inline void mei_txe_sec_reg_write_silent(struct mei_txe_hw *hw,
/**
* mei_txe_sec_reg_write - Writes 32bit data to the SeC BAR
*
- * @dev: the device structure
+ * @hw: the txe hardware structure
* @offset: register offset
* @value: value to write
*
@@ -115,9 +120,10 @@ static inline void mei_txe_sec_reg_write(struct mei_txe_hw *hw,
/**
* mei_txe_br_reg_read - Reads 32bit data from the Bridge BAR
*
- * @hw: the device structure
+ * @hw: the txe hardware structure
* @offset: offset from which to read the data
*
+ * Return: the byte read.
*/
static inline u32 mei_txe_br_reg_read(struct mei_txe_hw *hw,
unsigned long offset)
@@ -128,7 +134,7 @@ static inline u32 mei_txe_br_reg_read(struct mei_txe_hw *hw,
/**
* mei_txe_br_reg_write - Writes 32bit data to the Bridge BAR
*
- * @hw: the device structure
+ * @hw: the txe hardware structure
* @offset: offset from which to write the data
* @value: the byte to write
*/
@@ -147,7 +153,10 @@ static inline void mei_txe_br_reg_write(struct mei_txe_hw *hw,
* Request for aliveness change and returns true if the change is
* really needed and false if aliveness is already
* in the requested state
- * Requires device lock to be held
+ *
+ * Locking: called under "dev->device_lock" lock
+ *
+ * Return: true if request was send
*/
static bool mei_txe_aliveness_set(struct mei_device *dev, u32 req)
{
@@ -155,7 +164,7 @@ static bool mei_txe_aliveness_set(struct mei_device *dev, u32 req)
struct mei_txe_hw *hw = to_txe_hw(dev);
bool do_req = hw->aliveness != req;
- dev_dbg(&dev->pdev->dev, "Aliveness current=%d request=%d\n",
+ dev_dbg(dev->dev, "Aliveness current=%d request=%d\n",
hw->aliveness, req);
if (do_req) {
dev->pg_event = MEI_PG_EVENT_WAIT;
@@ -172,26 +181,31 @@ static bool mei_txe_aliveness_set(struct mei_device *dev, u32 req)
*
* Extract HICR_HOST_ALIVENESS_RESP_ACK bit from
* from HICR_HOST_ALIVENESS_REQ register value
+ *
+ * Return: SICR_HOST_ALIVENESS_REQ_REQUESTED bit value
*/
static u32 mei_txe_aliveness_req_get(struct mei_device *dev)
{
struct mei_txe_hw *hw = to_txe_hw(dev);
u32 reg;
+
reg = mei_txe_br_reg_read(hw, SICR_HOST_ALIVENESS_REQ_REG);
return reg & SICR_HOST_ALIVENESS_REQ_REQUESTED;
}
/**
* mei_txe_aliveness_get - get aliveness response register value
+ *
* @dev: the device structure
*
- * Extract HICR_HOST_ALIVENESS_RESP_ACK bit
- * from HICR_HOST_ALIVENESS_RESP register value
+ * Return: HICR_HOST_ALIVENESS_RESP_ACK bit from HICR_HOST_ALIVENESS_RESP
+ * register
*/
static u32 mei_txe_aliveness_get(struct mei_device *dev)
{
struct mei_txe_hw *hw = to_txe_hw(dev);
u32 reg;
+
reg = mei_txe_br_reg_read(hw, HICR_HOST_ALIVENESS_RESP_REG);
return reg & HICR_HOST_ALIVENESS_RESP_ACK;
}
@@ -203,7 +217,8 @@ static u32 mei_txe_aliveness_get(struct mei_device *dev)
* @expected: expected aliveness value
*
* Polls for HICR_HOST_ALIVENESS_RESP.ALIVENESS_RESP to be set
- * returns > 0 if the expected value was received, -ETIME otherwise
+ *
+ * Return: > 0 if the expected value was received, -ETIME otherwise
*/
static int mei_txe_aliveness_poll(struct mei_device *dev, u32 expected)
{
@@ -214,7 +229,7 @@ static int mei_txe_aliveness_poll(struct mei_device *dev, u32 expected)
hw->aliveness = mei_txe_aliveness_get(dev);
if (hw->aliveness == expected) {
dev->pg_event = MEI_PG_EVENT_IDLE;
- dev_dbg(&dev->pdev->dev,
+ dev_dbg(dev->dev,
"aliveness settled after %d msecs\n", t);
return t;
}
@@ -225,7 +240,7 @@ static int mei_txe_aliveness_poll(struct mei_device *dev, u32 expected)
} while (t < SEC_ALIVENESS_WAIT_TIMEOUT);
dev->pg_event = MEI_PG_EVENT_IDLE;
- dev_err(&dev->pdev->dev, "aliveness timed out\n");
+ dev_err(dev->dev, "aliveness timed out\n");
return -ETIME;
}
@@ -236,7 +251,8 @@ static int mei_txe_aliveness_poll(struct mei_device *dev, u32 expected)
* @expected: expected aliveness value
*
* Waits for HICR_HOST_ALIVENESS_RESP.ALIVENESS_RESP to be set
- * returns returns 0 on success and < 0 otherwise
+ *
+ * Return: 0 on success and < 0 otherwise
*/
static int mei_txe_aliveness_wait(struct mei_device *dev, u32 expected)
{
@@ -259,10 +275,10 @@ static int mei_txe_aliveness_wait(struct mei_device *dev, u32 expected)
ret = hw->aliveness == expected ? 0 : -ETIME;
if (ret)
- dev_warn(&dev->pdev->dev, "aliveness timed out = %ld aliveness = %d event = %d\n",
+ dev_warn(dev->dev, "aliveness timed out = %ld aliveness = %d event = %d\n",
err, hw->aliveness, dev->pg_event);
else
- dev_dbg(&dev->pdev->dev, "aliveness settled after = %d msec aliveness = %d event = %d\n",
+ dev_dbg(dev->dev, "aliveness settled after = %d msec aliveness = %d event = %d\n",
jiffies_to_msecs(timeout - err),
hw->aliveness, dev->pg_event);
@@ -274,8 +290,9 @@ static int mei_txe_aliveness_wait(struct mei_device *dev, u32 expected)
* mei_txe_aliveness_set_sync - sets an wait for aliveness to complete
*
* @dev: the device structure
+ * @req: requested aliveness value
*
- * returns returns 0 on success and < 0 otherwise
+ * Return: 0 on success and < 0 otherwise
*/
int mei_txe_aliveness_set_sync(struct mei_device *dev, u32 req)
{
@@ -289,7 +306,7 @@ int mei_txe_aliveness_set_sync(struct mei_device *dev, u32 req)
*
* @dev: the device structure
*
- * returns: true is pg supported, false otherwise
+ * Return: true is pg supported, false otherwise
*/
static bool mei_txe_pg_is_enabled(struct mei_device *dev)
{
@@ -302,11 +319,12 @@ static bool mei_txe_pg_is_enabled(struct mei_device *dev)
*
* @dev: the device structure
*
- * returns: MEI_PG_OFF if aliveness is on and MEI_PG_ON otherwise
+ * Return: MEI_PG_OFF if aliveness is on and MEI_PG_ON otherwise
*/
static inline enum mei_pg_state mei_txe_pg_state(struct mei_device *dev)
{
struct mei_txe_hw *hw = to_txe_hw(dev);
+
return hw->aliveness ? MEI_PG_OFF : MEI_PG_ON;
}
@@ -326,9 +344,10 @@ static void mei_txe_input_ready_interrupt_enable(struct mei_device *dev)
}
/**
- * mei_txe_input_doorbell_set
- * - Sets bit 0 in SEC_IPC_INPUT_DOORBELL.IPC_INPUT_DOORBELL.
- * @dev: the device structure
+ * mei_txe_input_doorbell_set - sets bit 0 in
+ * SEC_IPC_INPUT_DOORBELL.IPC_INPUT_DOORBELL.
+ *
+ * @hw: the txe hardware structure
*/
static void mei_txe_input_doorbell_set(struct mei_txe_hw *hw)
{
@@ -340,7 +359,7 @@ static void mei_txe_input_doorbell_set(struct mei_txe_hw *hw)
/**
* mei_txe_output_ready_set - Sets the SICR_SEC_IPC_OUTPUT_STATUS bit to 1
*
- * @dev: the device structure
+ * @hw: the txe hardware structure
*/
static void mei_txe_output_ready_set(struct mei_txe_hw *hw)
{
@@ -353,11 +372,14 @@ static void mei_txe_output_ready_set(struct mei_txe_hw *hw)
* mei_txe_is_input_ready - check if TXE is ready for receiving data
*
* @dev: the device structure
+ *
+ * Return: true if INPUT STATUS READY bit is set
*/
static bool mei_txe_is_input_ready(struct mei_device *dev)
{
struct mei_txe_hw *hw = to_txe_hw(dev);
u32 status;
+
status = mei_txe_sec_reg_read(hw, SEC_IPC_INPUT_STATUS_REG);
return !!(SEC_IPC_INPUT_STATUS_RDY & status);
}
@@ -370,6 +392,7 @@ static bool mei_txe_is_input_ready(struct mei_device *dev)
static inline void mei_txe_intr_clear(struct mei_device *dev)
{
struct mei_txe_hw *hw = to_txe_hw(dev);
+
mei_txe_sec_reg_write_silent(hw, SEC_IPC_HOST_INT_STATUS_REG,
SEC_IPC_HOST_INT_STATUS_PENDING);
mei_txe_br_reg_write(hw, HISR_REG, HISR_INT_STS_MSK);
@@ -384,6 +407,7 @@ static inline void mei_txe_intr_clear(struct mei_device *dev)
static void mei_txe_intr_disable(struct mei_device *dev)
{
struct mei_txe_hw *hw = to_txe_hw(dev);
+
mei_txe_br_reg_write(hw, HHIER_REG, 0);
mei_txe_br_reg_write(hw, HIER_REG, 0);
}
@@ -395,6 +419,7 @@ static void mei_txe_intr_disable(struct mei_device *dev)
static void mei_txe_intr_enable(struct mei_device *dev)
{
struct mei_txe_hw *hw = to_txe_hw(dev);
+
mei_txe_br_reg_write(hw, HHIER_REG, IPC_HHIER_MSK);
mei_txe_br_reg_write(hw, HIER_REG, HIER_INT_EN_MSK);
}
@@ -407,6 +432,8 @@ static void mei_txe_intr_enable(struct mei_device *dev)
*
* Checks if there are pending interrupts
* only Aliveness, Readiness, Input ready, and Output doorbell are relevant
+ *
+ * Return: true if there are pending interrupts
*/
static bool mei_txe_pending_interrupts(struct mei_device *dev)
{
@@ -418,7 +445,7 @@ static bool mei_txe_pending_interrupts(struct mei_device *dev)
TXE_INTR_OUT_DB));
if (ret) {
- dev_dbg(&dev->pdev->dev,
+ dev_dbg(dev->dev,
"Pending Interrupts InReady=%01d Readiness=%01d, Aliveness=%01d, OutDoor=%01d\n",
!!(hw->intr_cause & TXE_INTR_IN_READY),
!!(hw->intr_cause & TXE_INTR_READINESS),
@@ -440,6 +467,7 @@ static void mei_txe_input_payload_write(struct mei_device *dev,
unsigned long idx, u32 value)
{
struct mei_txe_hw *hw = to_txe_hw(dev);
+
mei_txe_sec_reg_write(hw, SEC_IPC_INPUT_PAYLOAD_REG +
(idx * sizeof(u32)), value);
}
@@ -451,12 +479,13 @@ static void mei_txe_input_payload_write(struct mei_device *dev,
* @dev: the device structure
* @idx: index in the device buffer
*
- * returns register value at index
+ * Return: register value at index
*/
static u32 mei_txe_out_data_read(const struct mei_device *dev,
unsigned long idx)
{
struct mei_txe_hw *hw = to_txe_hw(dev);
+
return mei_txe_br_reg_read(hw,
BRIDGE_IPC_OUTPUT_PAYLOAD_REG + (idx * sizeof(u32)));
}
@@ -464,26 +493,28 @@ static u32 mei_txe_out_data_read(const struct mei_device *dev,
/* Readiness */
/**
- * mei_txe_readiness_set_host_rdy
+ * mei_txe_readiness_set_host_rdy - set host readiness bit
*
* @dev: the device structure
*/
static void mei_txe_readiness_set_host_rdy(struct mei_device *dev)
{
struct mei_txe_hw *hw = to_txe_hw(dev);
+
mei_txe_br_reg_write(hw,
SICR_HOST_IPC_READINESS_REQ_REG,
SICR_HOST_IPC_READINESS_HOST_RDY);
}
/**
- * mei_txe_readiness_clear
+ * mei_txe_readiness_clear - clear host readiness bit
*
* @dev: the device structure
*/
static void mei_txe_readiness_clear(struct mei_device *dev)
{
struct mei_txe_hw *hw = to_txe_hw(dev);
+
mei_txe_br_reg_write(hw, SICR_HOST_IPC_READINESS_REQ_REG,
SICR_HOST_IPC_READINESS_RDY_CLR);
}
@@ -492,10 +523,13 @@ static void mei_txe_readiness_clear(struct mei_device *dev)
* the HICR_SEC_IPC_READINESS register value
*
* @dev: the device structure
+ *
+ * Return: the HICR_SEC_IPC_READINESS register value
*/
static u32 mei_txe_readiness_get(struct mei_device *dev)
{
struct mei_txe_hw *hw = to_txe_hw(dev);
+
return mei_txe_br_reg_read(hw, HICR_SEC_IPC_READINESS_REG);
}
@@ -504,7 +538,9 @@ static u32 mei_txe_readiness_get(struct mei_device *dev)
* mei_txe_readiness_is_sec_rdy - check readiness
* for HICR_SEC_IPC_READINESS_SEC_RDY
*
- * @readiness - cached readiness state
+ * @readiness: cached readiness state
+ *
+ * Return: true if readiness bit is set
*/
static inline bool mei_txe_readiness_is_sec_rdy(u32 readiness)
{
@@ -515,10 +551,13 @@ static inline bool mei_txe_readiness_is_sec_rdy(u32 readiness)
* mei_txe_hw_is_ready - check if the hw is ready
*
* @dev: the device structure
+ *
+ * Return: true if sec is ready
*/
static bool mei_txe_hw_is_ready(struct mei_device *dev)
{
u32 readiness = mei_txe_readiness_get(dev);
+
return mei_txe_readiness_is_sec_rdy(readiness);
}
@@ -526,11 +565,14 @@ static bool mei_txe_hw_is_ready(struct mei_device *dev)
* mei_txe_host_is_ready - check if the host is ready
*
* @dev: the device structure
+ *
+ * Return: true if host is ready
*/
static inline bool mei_txe_host_is_ready(struct mei_device *dev)
{
struct mei_txe_hw *hw = to_txe_hw(dev);
u32 reg = mei_txe_br_reg_read(hw, HICR_SEC_IPC_READINESS_REG);
+
return !!(reg & HICR_SEC_IPC_READINESS_HOST_RDY);
}
@@ -539,7 +581,7 @@ static inline bool mei_txe_host_is_ready(struct mei_device *dev)
*
* @dev: the device structure
*
- * returns 0 on success and -ETIME on timeout
+ * Return: 0 on success and -ETIME on timeout
*/
static int mei_txe_readiness_wait(struct mei_device *dev)
{
@@ -551,7 +593,7 @@ static int mei_txe_readiness_wait(struct mei_device *dev)
msecs_to_jiffies(SEC_RESET_WAIT_TIMEOUT));
mutex_lock(&dev->device_lock);
if (!dev->recvd_hw_ready) {
- dev_err(&dev->pdev->dev, "wait for readiness failed\n");
+ dev_err(dev->dev, "wait for readiness failed\n");
return -ETIME;
}
@@ -559,6 +601,42 @@ static int mei_txe_readiness_wait(struct mei_device *dev)
return 0;
}
+static const struct mei_fw_status mei_txe_fw_sts = {
+ .count = 2,
+ .status[0] = PCI_CFG_TXE_FW_STS0,
+ .status[1] = PCI_CFG_TXE_FW_STS1
+};
+
+/**
+ * mei_txe_fw_status - read fw status register from pci config space
+ *
+ * @dev: mei device
+ * @fw_status: fw status register values
+ *
+ * Return: 0 on success, error otherwise
+ */
+static int mei_txe_fw_status(struct mei_device *dev,
+ struct mei_fw_status *fw_status)
+{
+ const struct mei_fw_status *fw_src = &mei_txe_fw_sts;
+ struct pci_dev *pdev = to_pci_dev(dev->dev);
+ int ret;
+ int i;
+
+ if (!fw_status)
+ return -EINVAL;
+
+ fw_status->count = fw_src->count;
+ for (i = 0; i < fw_src->count && i < MEI_FW_STATUS_MAX; i++) {
+ ret = pci_read_config_dword(pdev,
+ fw_src->status[i], &fw_status->status[i]);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
/**
* mei_txe_hw_config - configure hardware at the start of the devices
*
@@ -571,13 +649,14 @@ static void mei_txe_hw_config(struct mei_device *dev)
{
struct mei_txe_hw *hw = to_txe_hw(dev);
+
/* Doesn't change in runtime */
dev->hbuf_depth = PAYLOAD_SIZE / 4;
hw->aliveness = mei_txe_aliveness_get(dev);
hw->readiness = mei_txe_readiness_get(dev);
- dev_dbg(&dev->pdev->dev, "aliveness_resp = 0x%08x, readiness = 0x%08x.\n",
+ dev_dbg(dev->dev, "aliveness_resp = 0x%08x, readiness = 0x%08x.\n",
hw->aliveness, hw->readiness);
}
@@ -588,7 +667,8 @@ static void mei_txe_hw_config(struct mei_device *dev)
* @dev: the device structure
* @header: header of message
* @buf: message buffer will be written
- * returns 1 if success, 0 - otherwise.
+ *
+ * Return: 0 if success, <0 - otherwise.
*/
static int mei_txe_write(struct mei_device *dev,
@@ -607,7 +687,7 @@ static int mei_txe_write(struct mei_device *dev,
length = header->length;
- dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(header));
+ dev_dbg(dev->dev, MEI_HDR_FMT, MEI_HDR_PRM(header));
dw_cnt = mei_data2slots(length);
if (dw_cnt > slots)
@@ -621,8 +701,9 @@ static int mei_txe_write(struct mei_device *dev,
if (!mei_txe_is_input_ready(dev)) {
struct mei_fw_status fw_status;
+
mei_fw_status(dev, &fw_status);
- dev_err(&dev->pdev->dev, "Input is not ready " FW_STS_FMT "\n",
+ dev_err(dev->dev, "Input is not ready " FW_STS_FMT "\n",
FW_STS_PRM(fw_status));
return -EAGAIN;
}
@@ -635,6 +716,7 @@ static int mei_txe_write(struct mei_device *dev,
rem = length & 0x3;
if (rem > 0) {
u32 reg = 0;
+
memcpy(&reg, &buf[length - rem], rem);
mei_txe_input_payload_write(dev, i + 1, reg);
}
@@ -653,7 +735,7 @@ static int mei_txe_write(struct mei_device *dev,
*
* @dev: the device structure
*
- * returns the PAYLOAD_SIZE - 4
+ * Return: the PAYLOAD_SIZE - 4
*/
static size_t mei_txe_hbuf_max_len(const struct mei_device *dev)
{
@@ -665,11 +747,12 @@ static size_t mei_txe_hbuf_max_len(const struct mei_device *dev)
*
* @dev: the device structure
*
- * returns always hbuf_depth
+ * Return: always hbuf_depth
*/
static int mei_txe_hbuf_empty_slots(struct mei_device *dev)
{
struct mei_txe_hw *hw = to_txe_hw(dev);
+
return hw->slots;
}
@@ -678,7 +761,7 @@ static int mei_txe_hbuf_empty_slots(struct mei_device *dev)
*
* @dev: the device structure
*
- * returns always buffer size in dwords count
+ * Return: always buffer size in dwords count
*/
static int mei_txe_count_full_read_slots(struct mei_device *dev)
{
@@ -691,7 +774,7 @@ static int mei_txe_count_full_read_slots(struct mei_device *dev)
*
* @dev: the device structure
*
- * returns mei message header
+ * Return: mei message header
*/
static u32 mei_txe_read_hdr(const struct mei_device *dev)
@@ -705,33 +788,35 @@ static u32 mei_txe_read_hdr(const struct mei_device *dev)
* @buf: message buffer will be written
* @len: message size will be read
*
- * returns -EINVAL on error wrong argument and 0 on success
+ * Return: -EINVAL on error wrong argument and 0 on success
*/
static int mei_txe_read(struct mei_device *dev,
unsigned char *buf, unsigned long len)
{
struct mei_txe_hw *hw = to_txe_hw(dev);
+ u32 *reg_buf, reg;
+ u32 rem;
u32 i;
- u32 *reg_buf = (u32 *)buf;
- u32 rem = len & 0x3;
if (WARN_ON(!buf || !len))
return -EINVAL;
- dev_dbg(&dev->pdev->dev,
- "buffer-length = %lu buf[0]0x%08X\n",
+ reg_buf = (u32 *)buf;
+ rem = len & 0x3;
+
+ dev_dbg(dev->dev, "buffer-length = %lu buf[0]0x%08X\n",
len, mei_txe_out_data_read(dev, 0));
for (i = 0; i < len / 4; i++) {
/* skip header: index starts from 1 */
- u32 reg = mei_txe_out_data_read(dev, i + 1);
- dev_dbg(&dev->pdev->dev, "buf[%d] = 0x%08X\n", i, reg);
+ reg = mei_txe_out_data_read(dev, i + 1);
+ dev_dbg(dev->dev, "buf[%d] = 0x%08X\n", i, reg);
*reg_buf++ = reg;
}
if (rem) {
- u32 reg = mei_txe_out_data_read(dev, i + 1);
+ reg = mei_txe_out_data_read(dev, i + 1);
memcpy(reg_buf, &reg, rem);
}
@@ -745,7 +830,7 @@ static int mei_txe_read(struct mei_device *dev,
* @dev: the device structure
* @intr_enable: if interrupt should be enabled after reset.
*
- * returns 0 on success and < 0 in case of error
+ * Return: 0 on success and < 0 in case of error
*/
static int mei_txe_hw_reset(struct mei_device *dev, bool intr_enable)
{
@@ -771,8 +856,7 @@ static int mei_txe_hw_reset(struct mei_device *dev, bool intr_enable)
*/
if (aliveness_req != hw->aliveness)
if (mei_txe_aliveness_poll(dev, aliveness_req) < 0) {
- dev_err(&dev->pdev->dev,
- "wait for aliveness settle failed ... bailing out\n");
+ dev_err(dev->dev, "wait for aliveness settle failed ... bailing out\n");
return -EIO;
}
@@ -782,14 +866,13 @@ static int mei_txe_hw_reset(struct mei_device *dev, bool intr_enable)
if (aliveness_req) {
mei_txe_aliveness_set(dev, 0);
if (mei_txe_aliveness_poll(dev, 0) < 0) {
- dev_err(&dev->pdev->dev,
- "wait for aliveness failed ... bailing out\n");
+ dev_err(dev->dev, "wait for aliveness failed ... bailing out\n");
return -EIO;
}
}
/*
- * Set rediness RDY_CLR bit
+ * Set readiness RDY_CLR bit
*/
mei_txe_readiness_clear(dev);
@@ -801,7 +884,7 @@ static int mei_txe_hw_reset(struct mei_device *dev, bool intr_enable)
*
* @dev: the device structure
*
- * returns 0 on success and < 0 in case of error
+ * Return: 0 on success an error code otherwise
*/
static int mei_txe_hw_start(struct mei_device *dev)
{
@@ -815,7 +898,7 @@ static int mei_txe_hw_start(struct mei_device *dev)
ret = mei_txe_readiness_wait(dev);
if (ret < 0) {
- dev_err(&dev->pdev->dev, "wating for readiness failed\n");
+ dev_err(dev->dev, "waiting for readiness failed\n");
return ret;
}
@@ -831,7 +914,7 @@ static int mei_txe_hw_start(struct mei_device *dev)
ret = mei_txe_aliveness_set_sync(dev, 1);
if (ret < 0) {
- dev_err(&dev->pdev->dev, "wait for aliveness failed ... bailing out\n");
+ dev_err(dev->dev, "wait for aliveness failed ... bailing out\n");
return ret;
}
@@ -857,6 +940,8 @@ static int mei_txe_hw_start(struct mei_device *dev)
*
* @dev: the device structure
* @do_ack: acknowledge interrupts
+ *
+ * Return: true if found interrupts to process.
*/
static bool mei_txe_check_and_ack_intrs(struct mei_device *dev, bool do_ack)
{
@@ -912,7 +997,8 @@ out:
* @irq: The irq number
* @dev_id: pointer to the device structure
*
- * returns irqreturn_t
+ * Return: IRQ_WAKE_THREAD if interrupt is designed for the device
+ * IRQ_NONE otherwise
*/
irqreturn_t mei_txe_irq_quick_handler(int irq, void *dev_id)
{
@@ -930,8 +1016,7 @@ irqreturn_t mei_txe_irq_quick_handler(int irq, void *dev_id)
* @irq: The irq number
* @dev_id: pointer to the device structure
*
- * returns irqreturn_t
- *
+ * Return: IRQ_HANDLED
*/
irqreturn_t mei_txe_irq_thread_handler(int irq, void *dev_id)
{
@@ -941,7 +1026,7 @@ irqreturn_t mei_txe_irq_thread_handler(int irq, void *dev_id)
s32 slots;
int rets = 0;
- dev_dbg(&dev->pdev->dev, "irq thread: Interrupt Registers HHISR|HISR|SEC=%02X|%04X|%02X\n",
+ dev_dbg(dev->dev, "irq thread: Interrupt Registers HHISR|HISR|SEC=%02X|%04X|%02X\n",
mei_txe_br_reg_read(hw, HHISR_REG),
mei_txe_br_reg_read(hw, HISR_REG),
mei_txe_sec_reg_read_silent(hw, SEC_IPC_HOST_INT_STATUS_REG));
@@ -951,7 +1036,7 @@ irqreturn_t mei_txe_irq_thread_handler(int irq, void *dev_id)
mutex_lock(&dev->device_lock);
mei_io_list_init(&complete_list);
- if (pci_dev_msi_enabled(dev->pdev))
+ if (pci_dev_msi_enabled(to_pci_dev(dev->dev)))
mei_txe_check_and_ack_intrs(dev, true);
/* show irq events */
@@ -965,17 +1050,17 @@ irqreturn_t mei_txe_irq_thread_handler(int irq, void *dev_id)
* or TXE driver resetting the HECI interface.
*/
if (test_and_clear_bit(TXE_INTR_READINESS_BIT, &hw->intr_cause)) {
- dev_dbg(&dev->pdev->dev, "Readiness Interrupt was received...\n");
+ dev_dbg(dev->dev, "Readiness Interrupt was received...\n");
/* Check if SeC is going through reset */
if (mei_txe_readiness_is_sec_rdy(hw->readiness)) {
- dev_dbg(&dev->pdev->dev, "we need to start the dev.\n");
+ dev_dbg(dev->dev, "we need to start the dev.\n");
dev->recvd_hw_ready = true;
} else {
dev->recvd_hw_ready = false;
if (dev->dev_state != MEI_DEV_RESETTING) {
- dev_warn(&dev->pdev->dev, "FW not ready: resetting.\n");
+ dev_warn(dev->dev, "FW not ready: resetting.\n");
schedule_work(&dev->reset_work);
goto end;
@@ -992,7 +1077,7 @@ irqreturn_t mei_txe_irq_thread_handler(int irq, void *dev_id)
if (test_and_clear_bit(TXE_INTR_ALIVENESS_BIT, &hw->intr_cause)) {
/* Clear the interrupt cause */
- dev_dbg(&dev->pdev->dev,
+ dev_dbg(dev->dev,
"Aliveness Interrupt: Status: %d\n", hw->aliveness);
dev->pg_event = MEI_PG_EVENT_RECEIVED;
if (waitqueue_active(&hw->wait_aliveness_resp))
@@ -1008,7 +1093,7 @@ irqreturn_t mei_txe_irq_thread_handler(int irq, void *dev_id)
/* Read from TXE */
rets = mei_irq_read_handler(dev, &complete_list, &slots);
if (rets && dev->dev_state != MEI_DEV_RESETTING) {
- dev_err(&dev->pdev->dev,
+ dev_err(dev->dev,
"mei_irq_read_handler ret = %d.\n", rets);
schedule_work(&dev->reset_work);
@@ -1026,7 +1111,7 @@ irqreturn_t mei_txe_irq_thread_handler(int irq, void *dev_id)
dev->hbuf_is_ready = mei_hbuf_is_ready(dev);
rets = mei_irq_write_handler(dev, &complete_list);
if (rets && rets != -EMSGSIZE)
- dev_err(&dev->pdev->dev, "mei_irq_write_handler ret = %d.\n",
+ dev_err(dev->dev, "mei_irq_write_handler ret = %d.\n",
rets);
dev->hbuf_is_ready = mei_hbuf_is_ready(dev);
}
@@ -1034,7 +1119,7 @@ irqreturn_t mei_txe_irq_thread_handler(int irq, void *dev_id)
mei_irq_compl_handler(dev, &complete_list);
end:
- dev_dbg(&dev->pdev->dev, "interrupt thread end ret = %d\n", rets);
+ dev_dbg(dev->dev, "interrupt thread end ret = %d\n", rets);
mutex_unlock(&dev->device_lock);
@@ -1046,6 +1131,7 @@ static const struct mei_hw_ops mei_txe_hw_ops = {
.host_is_ready = mei_txe_host_is_ready,
+ .fw_status = mei_txe_fw_status,
.pg_state = mei_txe_pg_state,
.hw_is_ready = mei_txe_hw_is_ready,
@@ -1072,27 +1158,14 @@ static const struct mei_hw_ops mei_txe_hw_ops = {
};
-#define MEI_CFG_TXE_FW_STS \
- .fw_status.count = 2, \
- .fw_status.status[0] = PCI_CFG_TXE_FW_STS0, \
- .fw_status.status[1] = PCI_CFG_TXE_FW_STS1
-
-const struct mei_cfg mei_txe_cfg = {
- MEI_CFG_TXE_FW_STS,
-};
-
-
/**
* mei_txe_dev_init - allocates and initializes txe hardware specific structure
*
- * @pdev - pci device
- * @cfg - per device generation config
- *
- * returns struct mei_device * on success or NULL;
+ * @pdev: pci device
*
+ * Return: struct mei_device * on success or NULL
*/
-struct mei_device *mei_txe_dev_init(struct pci_dev *pdev,
- const struct mei_cfg *cfg)
+struct mei_device *mei_txe_dev_init(struct pci_dev *pdev)
{
struct mei_device *dev;
struct mei_txe_hw *hw;
@@ -1102,15 +1175,12 @@ struct mei_device *mei_txe_dev_init(struct pci_dev *pdev,
if (!dev)
return NULL;
- mei_device_init(dev, cfg);
+ mei_device_init(dev, &pdev->dev, &mei_txe_hw_ops);
hw = to_txe_hw(dev);
init_waitqueue_head(&hw->wait_aliveness_resp);
- dev->ops = &mei_txe_hw_ops;
-
- dev->pdev = pdev;
return dev;
}
@@ -1120,6 +1190,8 @@ struct mei_device *mei_txe_dev_init(struct pci_dev *pdev,
* @dev: the device structure
* @addr: physical address start of the range
* @range: physical range size
+ *
+ * Return: 0 on success an error code otherwise
*/
int mei_txe_setup_satt2(struct mei_device *dev, phys_addr_t addr, u32 range)
{
@@ -1151,7 +1223,7 @@ int mei_txe_setup_satt2(struct mei_device *dev, phys_addr_t addr, u32 range)
mei_txe_br_reg_write(hw, SATT2_SAP_SIZE_REG, range);
mei_txe_br_reg_write(hw, SATT2_BRG_BA_LSB_REG, lo32);
mei_txe_br_reg_write(hw, SATT2_CTRL_REG, ctrl);
- dev_dbg(&dev->pdev->dev, "SATT2: SAP_SIZE_OFFSET=0x%08X, BRG_BA_LSB_OFFSET=0x%08X, CTRL_OFFSET=0x%08X\n",
+ dev_dbg(dev->dev, "SATT2: SAP_SIZE_OFFSET=0x%08X, BRG_BA_LSB_OFFSET=0x%08X, CTRL_OFFSET=0x%08X\n",
range, lo32, ctrl);
return 0;
diff --git a/drivers/misc/mei/hw-txe.h b/drivers/misc/mei/hw-txe.h
index e244af79167f..ce3ed0b88b0c 100644
--- a/drivers/misc/mei/hw-txe.h
+++ b/drivers/misc/mei/hw-txe.h
@@ -40,6 +40,7 @@
* @mem_addr: SeC and BRIDGE bars
* @aliveness: aliveness (power gating) state of the hardware
* @readiness: readiness state of the hardware
+ * @slots: number of empty slots
* @wait_aliveness_resp: aliveness wait queue
* @intr_cause: translated interrupt cause
*/
@@ -61,10 +62,7 @@ static inline struct mei_device *hw_txe_to_mei(struct mei_txe_hw *hw)
return container_of((void *)hw, struct mei_device, hw);
}
-extern const struct mei_cfg mei_txe_cfg;
-
-struct mei_device *mei_txe_dev_init(struct pci_dev *pdev,
- const struct mei_cfg *cfg);
+struct mei_device *mei_txe_dev_init(struct pci_dev *pdev);
irqreturn_t mei_txe_irq_quick_handler(int irq, void *dev_id);
irqreturn_t mei_txe_irq_thread_handler(int irq, void *dev_id);
diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h
index dd448e58cc87..16fef6dc4dd7 100644
--- a/drivers/misc/mei/hw.h
+++ b/drivers/misc/mei/hw.h
@@ -97,23 +97,52 @@ enum mei_stop_reason_types {
SYSTEM_S5_ENTRY = 0x08
};
+
+/**
+ * enum mei_hbm_status - mei host bus messages return values
+ *
+ * @MEI_HBMS_SUCCESS : status success
+ * @MEI_HBMS_CLIENT_NOT_FOUND : client not found
+ * @MEI_HBMS_ALREADY_EXISTS : connection already established
+ * @MEI_HBMS_REJECTED : connection is rejected
+ * @MEI_HBMS_INVALID_PARAMETER : invalid parameter
+ * @MEI_HBMS_NOT_ALLOWED : operation not allowed
+ * @MEI_HBMS_ALREADY_STARTED : system is already started
+ * @MEI_HBMS_NOT_STARTED : system not started
+ *
+ * @MEI_HBMS_MAX : sentinel
+ */
+enum mei_hbm_status {
+ MEI_HBMS_SUCCESS = 0,
+ MEI_HBMS_CLIENT_NOT_FOUND = 1,
+ MEI_HBMS_ALREADY_EXISTS = 2,
+ MEI_HBMS_REJECTED = 3,
+ MEI_HBMS_INVALID_PARAMETER = 4,
+ MEI_HBMS_NOT_ALLOWED = 5,
+ MEI_HBMS_ALREADY_STARTED = 6,
+ MEI_HBMS_NOT_STARTED = 7,
+
+ MEI_HBMS_MAX
+};
+
+
/*
* Client Connect Status
* used by hbm_client_connect_response.status
*/
enum mei_cl_connect_status {
- MEI_CL_CONN_SUCCESS = 0x00,
- MEI_CL_CONN_NOT_FOUND = 0x01,
- MEI_CL_CONN_ALREADY_STARTED = 0x02,
- MEI_CL_CONN_OUT_OF_RESOURCES = 0x03,
- MEI_CL_CONN_MESSAGE_SMALL = 0x04
+ MEI_CL_CONN_SUCCESS = MEI_HBMS_SUCCESS,
+ MEI_CL_CONN_NOT_FOUND = MEI_HBMS_CLIENT_NOT_FOUND,
+ MEI_CL_CONN_ALREADY_STARTED = MEI_HBMS_ALREADY_EXISTS,
+ MEI_CL_CONN_OUT_OF_RESOURCES = MEI_HBMS_REJECTED,
+ MEI_CL_CONN_MESSAGE_SMALL = MEI_HBMS_INVALID_PARAMETER,
};
/*
* Client Disconnect Status
*/
enum mei_cl_disconnect_status {
- MEI_CL_DISCONN_SUCCESS = 0x00
+ MEI_CL_DISCONN_SUCCESS = MEI_HBMS_SUCCESS
};
/*
@@ -138,10 +167,10 @@ struct mei_bus_message {
* struct hbm_cl_cmd - client specific host bus command
* CONNECT, DISCONNECT, and FlOW CONTROL
*
- * @hbm_cmd - bus message command header
- * @me_addr - address of the client in ME
- * @host_addr - address of the client in the driver
- * @data
+ * @hbm_cmd: bus message command header
+ * @me_addr: address of the client in ME
+ * @host_addr: address of the client in the driver
+ * @data: generic data
*/
struct mei_hbm_cl_cmd {
u8 hbm_cmd;
@@ -206,14 +235,13 @@ struct mei_client_properties {
struct hbm_props_request {
u8 hbm_cmd;
- u8 address;
+ u8 me_addr;
u8 reserved[2];
} __packed;
-
struct hbm_props_response {
u8 hbm_cmd;
- u8 address;
+ u8 me_addr;
u8 status;
u8 reserved[1];
struct mei_client_properties client_properties;
@@ -222,8 +250,8 @@ struct hbm_props_response {
/**
* struct hbm_power_gate - power gate request/response
*
- * @hbm_cmd - bus message command header
- * @reserved[3]
+ * @hbm_cmd: bus message command header
+ * @reserved: reserved
*/
struct hbm_power_gate {
u8 hbm_cmd;
@@ -233,10 +261,10 @@ struct hbm_power_gate {
/**
* struct hbm_client_connect_request - connect/disconnect request
*
- * @hbm_cmd - bus message command header
- * @me_addr - address of the client in ME
- * @host_addr - address of the client in the driver
- * @reserved
+ * @hbm_cmd: bus message command header
+ * @me_addr: address of the client in ME
+ * @host_addr: address of the client in the driver
+ * @reserved: reserved
*/
struct hbm_client_connect_request {
u8 hbm_cmd;
@@ -248,10 +276,10 @@ struct hbm_client_connect_request {
/**
* struct hbm_client_connect_response - connect/disconnect response
*
- * @hbm_cmd - bus message command header
- * @me_addr - address of the client in ME
- * @host_addr - address of the client in the driver
- * @status - status of the request
+ * @hbm_cmd: bus message command header
+ * @me_addr: address of the client in ME
+ * @host_addr: address of the client in the driver
+ * @status: status of the request
*/
struct hbm_client_connect_response {
u8 hbm_cmd;
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);
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c
index 4e3cba6da3f5..20c6c511f438 100644
--- a/drivers/misc/mei/interrupt.c
+++ b/drivers/misc/mei/interrupt.c
@@ -16,11 +16,11 @@
#include <linux/export.h>
-#include <linux/pci.h>
#include <linux/kthread.h>
#include <linux/interrupt.h>
#include <linux/fs.h>
#include <linux/jiffies.h>
+#include <linux/slab.h>
#include <linux/mei.h>
@@ -33,8 +33,8 @@
* mei_irq_compl_handler - dispatch complete handlers
* for the completed callbacks
*
- * @dev - mei device
- * @compl_list - list of completed cbs
+ * @dev: mei device
+ * @compl_list: list of completed cbs
*/
void mei_irq_compl_handler(struct mei_device *dev, struct mei_cl_cb *compl_list)
{
@@ -47,7 +47,7 @@ void mei_irq_compl_handler(struct mei_device *dev, struct mei_cl_cb *compl_list)
if (!cl)
continue;
- dev_dbg(&dev->pdev->dev, "completing call back.\n");
+ dev_dbg(dev->dev, "completing call back.\n");
if (cl == &dev->iamthif_cl)
mei_amthif_complete(dev, cb);
else
@@ -62,7 +62,7 @@ EXPORT_SYMBOL_GPL(mei_irq_compl_handler);
* @cl: host client
* @mei_hdr: header of mei client message
*
- * returns true if matches, false otherwise
+ * Return: true if matches, false otherwise
*/
static inline int mei_cl_hbm_equal(struct mei_cl *cl,
struct mei_msg_hdr *mei_hdr)
@@ -72,12 +72,12 @@ static inline int mei_cl_hbm_equal(struct mei_cl *cl,
}
/**
* mei_cl_is_reading - checks if the client
- is the one to read this message
+ * is the one to read this message
*
* @cl: mei client
* @mei_hdr: header of mei message
*
- * returns true on match and false otherwise
+ * Return: true on match and false otherwise
*/
static bool mei_cl_is_reading(struct mei_cl *cl, struct mei_msg_hdr *mei_hdr)
{
@@ -87,13 +87,13 @@ static bool mei_cl_is_reading(struct mei_cl *cl, struct mei_msg_hdr *mei_hdr)
}
/**
- * mei_irq_read_client_message - process client message
+ * mei_cl_irq_read_msg - process client message
*
* @dev: the device structure
* @mei_hdr: header of mei client message
* @complete_list: An instance of our list structure
*
- * returns 0 on success, <0 on failure.
+ * Return: 0 on success, <0 on failure.
*/
static int mei_cl_irq_read_msg(struct mei_device *dev,
struct mei_msg_hdr *mei_hdr,
@@ -126,7 +126,6 @@ static int mei_cl_irq_read_msg(struct mei_device *dev,
GFP_KERNEL);
if (!buffer) {
- cl_err(dev, cl, "allocation failed.\n");
list_del(&cb->list);
return -ENOMEM;
}
@@ -149,10 +148,10 @@ static int mei_cl_irq_read_msg(struct mei_device *dev,
break;
}
- dev_dbg(&dev->pdev->dev, "message read\n");
+ dev_dbg(dev->dev, "message read\n");
if (!buffer) {
mei_read_slots(dev, dev->rd_msg_buf, mei_hdr->length);
- dev_dbg(&dev->pdev->dev, "discarding message " MEI_HDR_FMT "\n",
+ dev_dbg(dev->dev, "discarding message " MEI_HDR_FMT "\n",
MEI_HDR_PRM(mei_hdr));
}
@@ -166,7 +165,7 @@ static int mei_cl_irq_read_msg(struct mei_device *dev,
* @cb: callback block.
* @cmpl_list: complete list.
*
- * returns 0, OK; otherwise, error.
+ * Return: 0, OK; otherwise, error.
*/
static int mei_cl_irq_disconnect_rsp(struct mei_cl *cl, struct mei_cl_cb *cb,
struct mei_cl_cb *cmpl_list)
@@ -195,16 +194,16 @@ static int mei_cl_irq_disconnect_rsp(struct mei_cl *cl, struct mei_cl_cb *cb,
/**
- * mei_cl_irq_close - processes close related operation from
+ * mei_cl_irq_disconnect - processes close related operation from
* interrupt thread context - send disconnect request
*
* @cl: client
* @cb: callback block.
* @cmpl_list: complete list.
*
- * returns 0, OK; otherwise, error.
+ * Return: 0, OK; otherwise, error.
*/
-static int mei_cl_irq_close(struct mei_cl *cl, struct mei_cl_cb *cb,
+static int mei_cl_irq_disconnect(struct mei_cl *cl, struct mei_cl_cb *cb,
struct mei_cl_cb *cmpl_list)
{
struct mei_device *dev = cl->dev;
@@ -235,14 +234,14 @@ static int mei_cl_irq_close(struct mei_cl *cl, struct mei_cl_cb *cb,
/**
- * mei_cl_irq_close - processes client read related operation from the
+ * mei_cl_irq_read - processes client read related operation from the
* interrupt thread context - request for flow control credits
*
* @cl: client
* @cb: callback block.
* @cmpl_list: complete list.
*
- * returns 0, OK; otherwise, error.
+ * Return: 0, OK; otherwise, error.
*/
static int mei_cl_irq_read(struct mei_cl *cl, struct mei_cl_cb *cb,
struct mei_cl_cb *cmpl_list)
@@ -279,7 +278,7 @@ static int mei_cl_irq_read(struct mei_cl *cl, struct mei_cl_cb *cb,
* @cb: callback block.
* @cmpl_list: complete list.
*
- * returns 0, OK; otherwise, error.
+ * Return: 0, OK; otherwise, error.
*/
static int mei_cl_irq_connect(struct mei_cl *cl, struct mei_cl_cb *cb,
struct mei_cl_cb *cmpl_list)
@@ -322,7 +321,7 @@ static int mei_cl_irq_connect(struct mei_cl *cl, struct mei_cl_cb *cb,
* @cmpl_list: An instance of our list structure
* @slots: slots to read.
*
- * returns 0 on success, <0 on failure.
+ * Return: 0 on success, <0 on failure.
*/
int mei_irq_read_handler(struct mei_device *dev,
struct mei_cl_cb *cmpl_list, s32 *slots)
@@ -334,20 +333,20 @@ int mei_irq_read_handler(struct mei_device *dev,
if (!dev->rd_msg_hdr) {
dev->rd_msg_hdr = mei_read_hdr(dev);
(*slots)--;
- dev_dbg(&dev->pdev->dev, "slots =%08x.\n", *slots);
+ dev_dbg(dev->dev, "slots =%08x.\n", *slots);
}
mei_hdr = (struct mei_msg_hdr *) &dev->rd_msg_hdr;
- dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(mei_hdr));
+ dev_dbg(dev->dev, MEI_HDR_FMT, MEI_HDR_PRM(mei_hdr));
if (mei_hdr->reserved || !dev->rd_msg_hdr) {
- dev_err(&dev->pdev->dev, "corrupted message header 0x%08X\n",
+ dev_err(dev->dev, "corrupted message header 0x%08X\n",
dev->rd_msg_hdr);
ret = -EBADMSG;
goto end;
}
if (mei_slots2data(*slots) < mei_hdr->length) {
- dev_err(&dev->pdev->dev, "less data available than length=%08x.\n",
+ dev_err(dev->dev, "less data available than length=%08x.\n",
*slots);
/* we can't read the message */
ret = -ENODATA;
@@ -358,7 +357,7 @@ int mei_irq_read_handler(struct mei_device *dev,
if (mei_hdr->host_addr == 0 && mei_hdr->me_addr == 0) {
ret = mei_hbm_dispatch(dev, mei_hdr);
if (ret) {
- dev_dbg(&dev->pdev->dev, "mei_hbm_dispatch failed ret = %d\n",
+ dev_dbg(dev->dev, "mei_hbm_dispatch failed ret = %d\n",
ret);
goto end;
}
@@ -375,7 +374,7 @@ int mei_irq_read_handler(struct mei_device *dev,
/* if no recipient cl was found we assume corrupted header */
if (&cl->link == &dev->file_list) {
- dev_err(&dev->pdev->dev, "no destination client found 0x%08X\n",
+ dev_err(dev->dev, "no destination client found 0x%08X\n",
dev->rd_msg_hdr);
ret = -EBADMSG;
goto end;
@@ -387,14 +386,14 @@ int mei_irq_read_handler(struct mei_device *dev,
ret = mei_amthif_irq_read_msg(dev, mei_hdr, cmpl_list);
if (ret) {
- dev_err(&dev->pdev->dev, "mei_amthif_irq_read_msg failed = %d\n",
+ dev_err(dev->dev, "mei_amthif_irq_read_msg failed = %d\n",
ret);
goto end;
}
} else {
ret = mei_cl_irq_read_msg(dev, mei_hdr, cmpl_list);
if (ret) {
- dev_err(&dev->pdev->dev, "mei_cl_irq_read_msg failed = %d\n",
+ dev_err(dev->dev, "mei_cl_irq_read_msg failed = %d\n",
ret);
goto end;
}
@@ -407,7 +406,7 @@ reset_slots:
if (*slots == -EOVERFLOW) {
/* overflow - reset */
- dev_err(&dev->pdev->dev, "resetting due to slots overflow.\n");
+ dev_err(dev->dev, "resetting due to slots overflow.\n");
/* set the event since message has been read */
ret = -ERANGE;
goto end;
@@ -425,7 +424,7 @@ EXPORT_SYMBOL_GPL(mei_irq_read_handler);
* @dev: the device structure
* @cmpl_list: An instance of our list structure
*
- * returns 0 on success, <0 on failure.
+ * Return: 0 on success, <0 on failure.
*/
int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list)
{
@@ -445,7 +444,7 @@ int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list)
return -EMSGSIZE;
/* complete all waiting for write CB */
- dev_dbg(&dev->pdev->dev, "complete all waiting for write cb.\n");
+ dev_dbg(dev->dev, "complete all waiting for write cb.\n");
list = &dev->write_waiting_list;
list_for_each_entry_safe(cb, next, &list->list, list) {
@@ -487,7 +486,7 @@ int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list)
}
/* complete control write list CB */
- dev_dbg(&dev->pdev->dev, "complete control write list cb.\n");
+ dev_dbg(dev->dev, "complete control write list cb.\n");
list_for_each_entry_safe(cb, next, &dev->ctrl_wr_list.list, list) {
cl = cb->cl;
if (!cl) {
@@ -495,9 +494,9 @@ int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list)
return -ENODEV;
}
switch (cb->fop_type) {
- case MEI_FOP_CLOSE:
+ case MEI_FOP_DISCONNECT:
/* send disconnect message */
- ret = mei_cl_irq_close(cl, cb, cmpl_list);
+ ret = mei_cl_irq_disconnect(cl, cb, cmpl_list);
if (ret)
return ret;
@@ -528,7 +527,7 @@ int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list)
}
/* complete write list CB */
- dev_dbg(&dev->pdev->dev, "complete write list cb.\n");
+ dev_dbg(dev->dev, "complete write list cb.\n");
list_for_each_entry_safe(cb, next, &dev->write_list.list, list) {
cl = cb->cl;
if (cl == NULL)
@@ -556,8 +555,6 @@ void mei_timer(struct work_struct *work)
{
unsigned long timeout;
struct mei_cl *cl;
- struct mei_cl_cb *cb_pos = NULL;
- struct mei_cl_cb *cb_next = NULL;
struct mei_device *dev = container_of(work,
struct mei_device, timer_work.work);
@@ -571,7 +568,7 @@ void mei_timer(struct work_struct *work)
if (dev->init_clients_timer) {
if (--dev->init_clients_timer == 0) {
- dev_err(&dev->pdev->dev, "timer: init clients timeout hbm_state = %d.\n",
+ dev_err(dev->dev, "timer: init clients timeout hbm_state = %d.\n",
dev->hbm_state);
mei_reset(dev);
goto out;
@@ -586,7 +583,7 @@ void mei_timer(struct work_struct *work)
list_for_each_entry(cl, &dev->file_list, link) {
if (cl->timer_count) {
if (--cl->timer_count == 0) {
- dev_err(&dev->pdev->dev, "timer: connect/disconnect timeout.\n");
+ dev_err(dev->dev, "timer: connect/disconnect timeout.\n");
mei_reset(dev);
goto out;
}
@@ -598,7 +595,7 @@ void mei_timer(struct work_struct *work)
if (dev->iamthif_stall_timer) {
if (--dev->iamthif_stall_timer == 0) {
- dev_err(&dev->pdev->dev, "timer: amthif hanged.\n");
+ dev_err(dev->dev, "timer: amthif hanged.\n");
mei_reset(dev);
dev->iamthif_msg_buf_size = 0;
dev->iamthif_msg_buf_index = 0;
@@ -620,27 +617,20 @@ void mei_timer(struct work_struct *work)
timeout = dev->iamthif_timer +
mei_secs_to_jiffies(MEI_IAMTHIF_READ_TIMER);
- dev_dbg(&dev->pdev->dev, "dev->iamthif_timer = %ld\n",
+ dev_dbg(dev->dev, "dev->iamthif_timer = %ld\n",
dev->iamthif_timer);
- dev_dbg(&dev->pdev->dev, "timeout = %ld\n", timeout);
- dev_dbg(&dev->pdev->dev, "jiffies = %ld\n", jiffies);
+ dev_dbg(dev->dev, "timeout = %ld\n", timeout);
+ dev_dbg(dev->dev, "jiffies = %ld\n", jiffies);
if (time_after(jiffies, timeout)) {
/*
* User didn't read the AMTHI data on time (15sec)
* freeing AMTHI for other requests
*/
- dev_dbg(&dev->pdev->dev, "freeing AMTHI for other requests\n");
+ dev_dbg(dev->dev, "freeing AMTHI for other requests\n");
- list_for_each_entry_safe(cb_pos, cb_next,
- &dev->amthif_rd_complete_list.list, list) {
-
- cl = cb_pos->file_object->private_data;
-
- /* Finding the AMTHI entry. */
- if (cl == &dev->iamthif_cl)
- list_del(&cb_pos->list);
- }
+ mei_io_list_flush(&dev->amthif_rd_complete_list,
+ &dev->iamthif_cl);
mei_io_cb_free(dev->iamthif_current_cb);
dev->iamthif_current_cb = NULL;
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index 401a3d526cd0..beedc91f03a6 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -17,12 +17,12 @@
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/device.h>
+#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/aio.h>
-#include <linux/pci.h>
#include <linux/poll.h>
#include <linux/init.h>
#include <linux/ioctl.h>
@@ -44,7 +44,7 @@
* @inode: pointer to inode structure
* @file: pointer to file structure
*
- * returns 0 on success, <0 on error
+ * Return: 0 on success, <0 on error
*/
static int mei_open(struct inode *inode, struct file *file)
{
@@ -63,7 +63,7 @@ static int mei_open(struct inode *inode, struct file *file)
err = -ENODEV;
if (dev->dev_state != MEI_DEV_ENABLED) {
- dev_dbg(&dev->pdev->dev, "dev_state != MEI_ENABLED dev_state = %s\n",
+ dev_dbg(dev->dev, "dev_state != MEI_ENABLED dev_state = %s\n",
mei_dev_state_str(dev->dev_state));
goto err_unlock;
}
@@ -96,7 +96,7 @@ err_unlock:
* @inode: pointer to inode structure
* @file: pointer to file structure
*
- * returns 0 on success, <0 on error
+ * Return: 0 on success, <0 on error
*/
static int mei_release(struct inode *inode, struct file *file)
{
@@ -157,7 +157,7 @@ out:
* @length: buffer length
* @offset: data offset in buffer
*
- * returns >=0 data length on success , <0 on error
+ * Return: >=0 data length on success , <0 on error
*/
static ssize_t mei_read(struct file *file, char __user *ubuf,
size_t length, loff_t *offset)
@@ -211,7 +211,7 @@ static ssize_t mei_read(struct file *file, char __user *ubuf,
err = mei_cl_read_start(cl, length);
if (err && err != -EBUSY) {
- dev_dbg(&dev->pdev->dev,
+ dev_dbg(dev->dev,
"mei start read failure with status = %d\n", err);
rets = err;
goto out;
@@ -254,7 +254,7 @@ static ssize_t mei_read(struct file *file, char __user *ubuf,
}
/* now copy the data to user space */
copy_buffer:
- dev_dbg(&dev->pdev->dev, "buf.size = %d buf.idx= %ld\n",
+ dev_dbg(dev->dev, "buf.size = %d buf.idx= %ld\n",
cb->response_buffer.size, cb->buf_idx);
if (length == 0 || ubuf == NULL || *offset > cb->buf_idx) {
rets = -EMSGSIZE;
@@ -266,7 +266,7 @@ copy_buffer:
length = min_t(size_t, length, cb->buf_idx - *offset);
if (copy_to_user(ubuf, cb->response_buffer.data + *offset, length)) {
- dev_dbg(&dev->pdev->dev, "failed to copy data to userland\n");
+ dev_dbg(dev->dev, "failed to copy data to userland\n");
rets = -EFAULT;
goto free;
}
@@ -285,7 +285,7 @@ free:
cl->reading_state = MEI_IDLE;
cl->read_cb = NULL;
out:
- dev_dbg(&dev->pdev->dev, "end mei read rets= %d\n", rets);
+ dev_dbg(dev->dev, "end mei read rets= %d\n", rets);
mutex_unlock(&dev->device_lock);
return rets;
}
@@ -297,17 +297,17 @@ out:
* @length: buffer length
* @offset: data offset in buffer
*
- * returns >=0 data length on success , <0 on error
+ * Return: >=0 data length on success , <0 on error
*/
static ssize_t mei_write(struct file *file, const char __user *ubuf,
size_t length, loff_t *offset)
{
struct mei_cl *cl = file->private_data;
+ struct mei_me_client *me_cl;
struct mei_cl_cb *write_cb = NULL;
struct mei_device *dev;
unsigned long timeout = 0;
int rets;
- int id;
if (WARN_ON(!cl || !cl->dev))
return -ENODEV;
@@ -321,8 +321,8 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf,
goto out;
}
- id = mei_me_cl_by_id(dev, cl->me_client_id);
- if (id < 0) {
+ me_cl = mei_me_cl_by_uuid_id(dev, &cl->cl_uuid, cl->me_client_id);
+ if (!me_cl) {
rets = -ENOTTY;
goto out;
}
@@ -332,13 +332,13 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf,
goto out;
}
- if (length > dev->me_clients[id].props.max_msg_length) {
+ if (length > me_cl->props.max_msg_length) {
rets = -EFBIG;
goto out;
}
if (cl->state != MEI_FILE_CONNECTED) {
- dev_err(&dev->pdev->dev, "host client = %d, is not connected to ME client = %d",
+ dev_err(dev->dev, "host client = %d, is not connected to ME client = %d",
cl->host_client_id, cl->me_client_id);
rets = -ENODEV;
goto out;
@@ -377,7 +377,6 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf,
write_cb = mei_io_cb_init(cl, file);
if (!write_cb) {
- dev_err(&dev->pdev->dev, "write cb allocation failed\n");
rets = -ENOMEM;
goto out;
}
@@ -387,7 +386,7 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf,
rets = copy_from_user(write_cb->request_buffer.data, ubuf, length);
if (rets) {
- dev_dbg(&dev->pdev->dev, "failed to copy data from userland\n");
+ dev_dbg(dev->dev, "failed to copy data from userland\n");
rets = -EFAULT;
goto out;
}
@@ -396,7 +395,7 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf,
rets = mei_amthif_write(dev, write_cb);
if (rets) {
- dev_err(&dev->pdev->dev,
+ dev_err(dev->dev,
"amthif write failed with status = %d\n", rets);
goto out;
}
@@ -415,27 +414,23 @@ out:
/**
* mei_ioctl_connect_client - the connect to fw client IOCTL function
*
- * @dev: the device structure
- * @data: IOCTL connect data, input and output parameters
* @file: private data of the file object
+ * @data: IOCTL connect data, input and output parameters
*
* Locking: called under "dev->device_lock" lock
*
- * returns 0 on success, <0 on failure.
+ * Return: 0 on success, <0 on failure.
*/
static int mei_ioctl_connect_client(struct file *file,
struct mei_connect_client_data *data)
{
struct mei_device *dev;
struct mei_client *client;
+ struct mei_me_client *me_cl;
struct mei_cl *cl;
- int i;
int rets;
cl = file->private_data;
- if (WARN_ON(!cl || !cl->dev))
- return -ENODEV;
-
dev = cl->dev;
if (dev->dev_state != MEI_DEV_ENABLED) {
@@ -450,28 +445,29 @@ static int mei_ioctl_connect_client(struct file *file,
}
/* find ME client we're trying to connect to */
- i = mei_me_cl_by_uuid(dev, &data->in_client_uuid);
- if (i < 0 || dev->me_clients[i].props.fixed_address) {
- dev_dbg(&dev->pdev->dev, "Cannot connect to FW Client UUID = %pUl\n",
+ me_cl = mei_me_cl_by_uuid(dev, &data->in_client_uuid);
+ if (!me_cl || me_cl->props.fixed_address) {
+ dev_dbg(dev->dev, "Cannot connect to FW Client UUID = %pUl\n",
&data->in_client_uuid);
rets = -ENOTTY;
goto end;
}
- cl->me_client_id = dev->me_clients[i].client_id;
+ cl->me_client_id = me_cl->client_id;
+ cl->cl_uuid = me_cl->props.protocol_name;
- dev_dbg(&dev->pdev->dev, "Connect to FW Client ID = %d\n",
+ dev_dbg(dev->dev, "Connect to FW Client ID = %d\n",
cl->me_client_id);
- dev_dbg(&dev->pdev->dev, "FW Client - Protocol Version = %d\n",
- dev->me_clients[i].props.protocol_version);
- dev_dbg(&dev->pdev->dev, "FW Client - Max Msg Len = %d\n",
- dev->me_clients[i].props.max_msg_length);
+ dev_dbg(dev->dev, "FW Client - Protocol Version = %d\n",
+ me_cl->props.protocol_version);
+ dev_dbg(dev->dev, "FW Client - Max Msg Len = %d\n",
+ me_cl->props.max_msg_length);
/* if we're connecting to amthif client then we will use the
* existing connection
*/
if (uuid_le_cmp(data->in_client_uuid, mei_amthif_guid) == 0) {
- dev_dbg(&dev->pdev->dev, "FW Client is amthi\n");
+ dev_dbg(dev->dev, "FW Client is amthi\n");
if (dev->iamthif_cl.state != MEI_FILE_CONNECTED) {
rets = -ENODEV;
goto end;
@@ -484,10 +480,8 @@ static int mei_ioctl_connect_client(struct file *file,
file->private_data = &dev->iamthif_cl;
client = &data->out_client_properties;
- client->max_msg_length =
- dev->me_clients[i].props.max_msg_length;
- client->protocol_version =
- dev->me_clients[i].props.protocol_version;
+ client->max_msg_length = me_cl->props.max_msg_length;
+ client->protocol_version = me_cl->props.protocol_version;
rets = dev->iamthif_cl.status;
goto end;
@@ -496,9 +490,9 @@ static int mei_ioctl_connect_client(struct file *file,
/* prepare the output buffer */
client = &data->out_client_properties;
- client->max_msg_length = dev->me_clients[i].props.max_msg_length;
- client->protocol_version = dev->me_clients[i].props.protocol_version;
- dev_dbg(&dev->pdev->dev, "Can connect?\n");
+ client->max_msg_length = me_cl->props.max_msg_length;
+ client->protocol_version = me_cl->props.protocol_version;
+ dev_dbg(dev->dev, "Can connect?\n");
rets = mei_cl_connect(cl, file);
@@ -507,7 +501,6 @@ end:
return rets;
}
-
/**
* mei_ioctl - the IOCTL function
*
@@ -515,24 +508,22 @@ end:
* @cmd: ioctl command
* @data: pointer to mei message structure
*
- * returns 0 on success , <0 on error
+ * Return: 0 on success , <0 on error
*/
static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data)
{
struct mei_device *dev;
struct mei_cl *cl = file->private_data;
- struct mei_connect_client_data *connect_data = NULL;
+ struct mei_connect_client_data connect_data;
int rets;
- if (cmd != IOCTL_MEI_CONNECT_CLIENT)
- return -EINVAL;
if (WARN_ON(!cl || !cl->dev))
return -ENODEV;
dev = cl->dev;
- dev_dbg(&dev->pdev->dev, "IOCTL cmd = 0x%x", cmd);
+ dev_dbg(dev->dev, "IOCTL cmd = 0x%x", cmd);
mutex_lock(&dev->device_lock);
if (dev->dev_state != MEI_DEV_ENABLED) {
@@ -540,38 +531,36 @@ static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data)
goto out;
}
- dev_dbg(&dev->pdev->dev, ": IOCTL_MEI_CONNECT_CLIENT.\n");
-
- connect_data = kzalloc(sizeof(struct mei_connect_client_data),
- GFP_KERNEL);
- if (!connect_data) {
- rets = -ENOMEM;
- goto out;
- }
- dev_dbg(&dev->pdev->dev, "copy connect data from user\n");
- if (copy_from_user(connect_data, (char __user *)data,
+ switch (cmd) {
+ case IOCTL_MEI_CONNECT_CLIENT:
+ dev_dbg(dev->dev, ": IOCTL_MEI_CONNECT_CLIENT.\n");
+ if (copy_from_user(&connect_data, (char __user *)data,
sizeof(struct mei_connect_client_data))) {
- dev_dbg(&dev->pdev->dev, "failed to copy data from userland\n");
- rets = -EFAULT;
- goto out;
- }
-
- rets = mei_ioctl_connect_client(file, connect_data);
+ dev_dbg(dev->dev, "failed to copy data from userland\n");
+ rets = -EFAULT;
+ goto out;
+ }
- /* if all is ok, copying the data back to user. */
- if (rets)
- goto out;
+ rets = mei_ioctl_connect_client(file, &connect_data);
+ if (rets)
+ goto out;
- dev_dbg(&dev->pdev->dev, "copy connect data to user\n");
- if (copy_to_user((char __user *)data, connect_data,
+ /* if all is ok, copying the data back to user. */
+ if (copy_to_user((char __user *)data, &connect_data,
sizeof(struct mei_connect_client_data))) {
- dev_dbg(&dev->pdev->dev, "failed to copy data to userland\n");
- rets = -EFAULT;
- goto out;
+ dev_dbg(dev->dev, "failed to copy data to userland\n");
+ rets = -EFAULT;
+ goto out;
+ }
+
+ break;
+
+ default:
+ dev_err(dev->dev, ": unsupported ioctl %d.\n", cmd);
+ rets = -ENOIOCTLCMD;
}
out:
- kfree(connect_data);
mutex_unlock(&dev->device_lock);
return rets;
}
@@ -583,7 +572,7 @@ out:
* @cmd: ioctl command
* @data: pointer to mei message structure
*
- * returns 0 on success , <0 on error
+ * Return: 0 on success , <0 on error
*/
#ifdef CONFIG_COMPAT
static long mei_compat_ioctl(struct file *file,
@@ -600,7 +589,7 @@ static long mei_compat_ioctl(struct file *file,
* @file: pointer to file structure
* @wait: pointer to poll_table structure
*
- * returns poll mask
+ * Return: poll mask
*/
static unsigned int mei_poll(struct file *file, poll_table *wait)
{
@@ -670,7 +659,7 @@ static DEFINE_IDR(mei_idr);
*
* @dev: device pointer
*
- * returns allocated minor, or -ENOSPC if no free minor left
+ * Return: allocated minor, or -ENOSPC if no free minor left
*/
static int mei_minor_get(struct mei_device *dev)
{
@@ -681,7 +670,7 @@ static int mei_minor_get(struct mei_device *dev)
if (ret >= 0)
dev->minor = ret;
else if (ret == -ENOSPC)
- dev_err(&dev->pdev->dev, "too many mei devices\n");
+ dev_err(dev->dev, "too many mei devices\n");
mutex_unlock(&mei_minor_lock);
return ret;
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index 0b0d6135543b..71744b16cc8c 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -129,20 +129,18 @@ enum mei_wd_states {
/**
* enum mei_cb_file_ops - file operation associated with the callback
- * @MEI_FOP_READ - read
- * @MEI_FOP_WRITE - write
- * @MEI_FOP_CONNECT - connect
- * @MEI_FOP_DISCONNECT_RSP - disconnect response
- * @MEI_FOP_OPEN - open
- * @MEI_FOP_CLOSE - close
+ * @MEI_FOP_READ: read
+ * @MEI_FOP_WRITE: write
+ * @MEI_FOP_CONNECT: connect
+ * @MEI_FOP_DISCONNECT: disconnect
+ * @MEI_FOP_DISCONNECT_RSP: disconnect response
*/
enum mei_cb_file_ops {
MEI_FOP_READ = 0,
MEI_FOP_WRITE,
MEI_FOP_CONNECT,
+ MEI_FOP_DISCONNECT,
MEI_FOP_DISCONNECT_RSP,
- MEI_FOP_OPEN,
- MEI_FOP_CLOSE
};
/*
@@ -159,8 +157,8 @@ struct mei_msg_data {
/*
* struct mei_fw_status - storage of FW status data
*
- * @count - number of actually available elements in array
- * @status - FW status registers
+ * @count: number of actually available elements in array
+ * @status: FW status registers
*/
struct mei_fw_status {
int count;
@@ -170,11 +168,13 @@ struct mei_fw_status {
/**
* struct mei_me_client - representation of me (fw) client
*
- * @props - client properties
- * @client_id - me client id
- * @mei_flow_ctrl_creds - flow control credits
+ * @list: link in me client list
+ * @props: client properties
+ * @client_id: me client id
+ * @mei_flow_ctrl_creds: flow control credits
*/
struct mei_me_client {
+ struct list_head list;
struct mei_client_properties props;
u8 client_id;
u8 mei_flow_ctrl_creds;
@@ -186,8 +186,15 @@ struct mei_cl;
/**
* struct mei_cl_cb - file operation callback structure
*
- * @cl - file client who is running this operation
- * @fop_type - file operation type
+ * @list: link in callback queue
+ * @cl: file client who is running this operation
+ * @fop_type: file operation type
+ * @request_buffer: buffer to store request data
+ * @response_buffer: buffer to store response data
+ * @buf_idx: last read index
+ * @read_time: last read operation time stamp (iamthif)
+ * @file_object: pointer to file structure
+ * @internal: communication between driver and FW flag
*/
struct mei_cl_cb {
struct list_head list;
@@ -201,7 +208,29 @@ struct mei_cl_cb {
u32 internal:1;
};
-/* MEI client instance carried as file->private_data*/
+/**
+ * struct mei_cl - me client host representation
+ * carried in file->private_data
+ *
+ * @link: link in the clients list
+ * @dev: mei parent device
+ * @state: file operation state
+ * @tx_wait: wait queue for tx completion
+ * @rx_wait: wait queue for rx completion
+ * @wait: wait queue for management operation
+ * @status: connection status
+ * @cl_uuid: client uuid name
+ * @host_client_id: host id
+ * @me_client_id: me/fw id
+ * @mei_flow_ctrl_creds: transmit flow credentials
+ * @timer_count: watchdog timer for operation completion
+ * @reading_state: state of the rx
+ * @writing_state: state of the tx
+ * @read_cb: current pending reading callback
+ *
+ * @device: device on the mei client bus
+ * @device_link: link to bus clients
+ */
struct mei_cl {
struct list_head link;
struct mei_device *dev;
@@ -210,7 +239,7 @@ struct mei_cl {
wait_queue_head_t rx_wait;
wait_queue_head_t wait;
int status;
- /* ID of client connected */
+ uuid_le cl_uuid;
u8 host_client_id;
u8 me_client_id;
u8 mei_flow_ctrl_creds;
@@ -222,35 +251,35 @@ struct mei_cl {
/* MEI CL bus data */
struct mei_cl_device *device;
struct list_head device_link;
- uuid_le device_uuid;
};
/** struct mei_hw_ops
*
- * @host_is_ready - query for host readiness
+ * @host_is_ready : query for host readiness
- * @hw_is_ready - query if hw is ready
- * @hw_reset - reset hw
- * @hw_start - start hw after reset
- * @hw_config - configure hw
+ * @hw_is_ready : query if hw is ready
+ * @hw_reset : reset hw
+ * @hw_start : start hw after reset
+ * @hw_config : configure hw
- * @pg_state - power gating state of the device
- * @pg_is_enabled - is power gating enabled
+ * @fw_status : get fw status registers
+ * @pg_state : power gating state of the device
+ * @pg_is_enabled : is power gating enabled
- * @intr_clear - clear pending interrupts
- * @intr_enable - enable interrupts
- * @intr_disable - disable interrupts
+ * @intr_clear : clear pending interrupts
+ * @intr_enable : enable interrupts
+ * @intr_disable : disable interrupts
- * @hbuf_free_slots - query for write buffer empty slots
- * @hbuf_is_ready - query if write buffer is empty
- * @hbuf_max_len - query for write buffer max len
+ * @hbuf_free_slots : query for write buffer empty slots
+ * @hbuf_is_ready : query if write buffer is empty
+ * @hbuf_max_len : query for write buffer max len
- * @write - write a message to FW
+ * @write : write a message to FW
- * @rdbuf_full_slots - query how many slots are filled
+ * @rdbuf_full_slots : query how many slots are filled
- * @read_hdr - get first 4 bytes (header)
- * @read - read a buffer from the FW
+ * @read_hdr : get first 4 bytes (header)
+ * @read : read a buffer from the FW
*/
struct mei_hw_ops {
@@ -261,6 +290,8 @@ struct mei_hw_ops {
int (*hw_start)(struct mei_device *dev);
void (*hw_config)(struct mei_device *dev);
+
+ int (*fw_status)(struct mei_device *dev, struct mei_fw_status *fw_sts);
enum mei_pg_state (*pg_state)(struct mei_device *dev);
bool (*pg_is_enabled)(struct mei_device *dev);
@@ -328,11 +359,12 @@ void mei_cl_bus_exit(void);
* when being probed and shall use it for doing ME bus I/O.
*
* @dev: linux driver model device pointer
- * @uuid: me client uuid
* @cl: mei client
* @ops: ME transport ops
+ * @event_work: async work to execute event callback
* @event_cb: Drivers register this callback to get asynchronous ME
* events (e.g. Rx buffer pending) notifications.
+ * @event_context: event callback run context
* @events: Events bitmask sent to the driver.
* @priv_data: client private data
*/
@@ -352,7 +384,7 @@ struct mei_cl_device {
};
- /**
+/**
* enum mei_pg_event - power gating transition events
*
* @MEI_PG_EVENT_IDLE: the driver is not in power gating transition
@@ -376,67 +408,106 @@ enum mei_pg_state {
MEI_PG_ON = 1,
};
-/*
- * mei_cfg
- *
- * @fw_status - FW status
- * @quirk_probe - device exclusion quirk
- */
-struct mei_cfg {
- const struct mei_fw_status fw_status;
- bool (*quirk_probe)(struct pci_dev *pdev);
-};
-
-
-#define MEI_PCI_DEVICE(dev, cfg) \
- .vendor = PCI_VENDOR_ID_INTEL, .device = (dev), \
- .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, \
- .driver_data = (kernel_ulong_t)&(cfg)
-
+const char *mei_pg_state_str(enum mei_pg_state state);
/**
* struct mei_device - MEI private device struct
-
- * @pdev - pointer to pci device struct
- * @cdev - character device
- * @minor - minor number allocated for device
*
- * @reset_count - limits the number of consecutive resets
- * @hbm_state - state of host bus message protocol
- * @pg_event - power gating event
- * @mem_addr - mem mapped base register address
-
- * @hbuf_depth - depth of hardware host/write buffer is slots
- * @hbuf_is_ready - query if the host host/write buffer is ready
- * @wr_msg - the buffer for hbm control messages
- * @cfg - per device generation config and ops
+ * @dev : device on a bus
+ * @cdev : character device
+ * @minor : minor number allocated for device
+ *
+ * @read_list : read completion list
+ * @write_list : write pending list
+ * @write_waiting_list : write completion list
+ * @ctrl_wr_list : pending control write list
+ * @ctrl_rd_list : pending control read list
+ *
+ * @file_list : list of opened handles
+ * @open_handle_count: number of opened handles
+ *
+ * @device_lock : big device lock
+ * @timer_work : MEI timer delayed work (timeouts)
+ *
+ * @recvd_hw_ready : hw ready message received flag
+ *
+ * @wait_hw_ready : wait queue for receive HW ready message form FW
+ * @wait_pg : wait queue for receive PG message from FW
+ * @wait_hbm_start : wait queue for receive HBM start message from FW
+ * @wait_stop_wd : wait queue for receive WD stop message from FW
+ *
+ * @reset_count : number of consecutive resets
+ * @dev_state : device state
+ * @hbm_state : state of host bus message protocol
+ * @init_clients_timer : HBM init handshake timeout
+ *
+ * @pg_event : power gating event
+ * @pg_domain : runtime PM domain
+ *
+ * @rd_msg_buf : control messages buffer
+ * @rd_msg_hdr : read message header storage
+ *
+ * @hbuf_depth : depth of hardware host/write buffer is slots
+ * @hbuf_is_ready : query if the host host/write buffer is ready
+ * @wr_msg : the buffer for hbm control messages
+ *
+ * @version : HBM protocol version in use
+ * @hbm_f_pg_supported : hbm feature pgi protocol
+ *
+ * @me_clients : list of FW clients
+ * @me_clients_map : FW clients bit map
+ * @host_clients_map : host clients id pool
+ * @me_client_index : last FW client index in enumeration
+ *
+ * @wd_cl : watchdog client
+ * @wd_state : watchdog client state
+ * @wd_pending : watchdog command is pending
+ * @wd_timeout : watchdog expiration timeout
+ * @wd_data : watchdog message buffer
+ *
+ * @amthif_cmd_list : amthif list for cmd waiting
+ * @amthif_rd_complete_list : amthif list for reading completed cmd data
+ * @iamthif_file_object : file for current amthif operation
+ * @iamthif_cl : amthif host client
+ * @iamthif_current_cb : amthif current operation callback
+ * @iamthif_open_count : number of opened amthif connections
+ * @iamthif_mtu : amthif client max message length
+ * @iamthif_timer : time stamp of current amthif command completion
+ * @iamthif_stall_timer : timer to detect amthif hang
+ * @iamthif_msg_buf : amthif current message buffer
+ * @iamthif_msg_buf_size : size of current amthif message request buffer
+ * @iamthif_msg_buf_index : current index in amthif message request buffer
+ * @iamthif_state : amthif processor state
+ * @iamthif_flow_control_pending: amthif waits for flow control
+ * @iamthif_ioctl : wait for completion if amthif control message
+ * @iamthif_canceled : current amthif command is canceled
+ *
+ * @init_work : work item for the device init
+ * @reset_work : work item for the device reset
+ *
+ * @device_list : mei client bus list
+ *
+ * @dbgfs_dir : debugfs mei root directory
+ *
+ * @ops: : hw specific operations
+ * @hw : hw specific data
*/
struct mei_device {
- struct pci_dev *pdev; /* pointer to pci device struct */
+ struct device *dev;
struct cdev cdev;
int minor;
- /*
- * lists of queues
- */
- /* array of pointers to aio lists */
- struct mei_cl_cb read_list; /* driver read queue */
- struct mei_cl_cb write_list; /* driver write queue */
- struct mei_cl_cb write_waiting_list; /* write waiting queue */
- struct mei_cl_cb ctrl_wr_list; /* managed write IOCTL list */
- struct mei_cl_cb ctrl_rd_list; /* managed read IOCTL list */
+ struct mei_cl_cb read_list;
+ struct mei_cl_cb write_list;
+ struct mei_cl_cb write_waiting_list;
+ struct mei_cl_cb ctrl_wr_list;
+ struct mei_cl_cb ctrl_rd_list;
- /*
- * list of files
- */
struct list_head file_list;
long open_handle_count;
- /*
- * lock for the device
- */
- struct mutex device_lock; /* device lock */
- struct delayed_work timer_work; /* MEI timer delayed work (timeouts) */
+ struct mutex device_lock;
+ struct delayed_work timer_work;
bool recvd_hw_ready;
/*
@@ -444,7 +515,7 @@ struct mei_device {
*/
wait_queue_head_t wait_hw_ready;
wait_queue_head_t wait_pg;
- wait_queue_head_t wait_recvd_msg;
+ wait_queue_head_t wait_hbm_start;
wait_queue_head_t wait_stop_wd;
/*
@@ -463,7 +534,7 @@ struct mei_device {
struct dev_pm_domain pg_domain;
#endif /* CONFIG_PM_RUNTIME */
- unsigned char rd_msg_buf[MEI_RD_MSG_BUF_SIZE]; /* control messages */
+ unsigned char rd_msg_buf[MEI_RD_MSG_BUF_SIZE];
u32 rd_msg_hdr;
/* write buffer */
@@ -477,12 +548,11 @@ struct mei_device {
} wr_msg;
struct hbm_version version;
+ unsigned int hbm_f_pg_supported:1;
- struct mei_me_client *me_clients; /* Note: memory has to be allocated */
+ struct list_head me_clients;
DECLARE_BITMAP(me_clients_map, MEI_CLIENTS_MAX);
DECLARE_BITMAP(host_clients_map, MEI_CLIENTS_MAX);
- unsigned long me_clients_num;
- unsigned long me_client_presentation_num;
unsigned long me_client_index;
struct mei_cl wd_cl;
@@ -523,7 +593,6 @@ struct mei_device {
const struct mei_hw_ops *ops;
- const struct mei_cfg *cfg;
char hw[0] __aligned(sizeof(void *));
};
@@ -535,8 +604,10 @@ static inline unsigned long mei_secs_to_jiffies(unsigned long sec)
/**
* mei_data2slots - get slots - number of (dwords) from a message length
* + size of the mei header
- * @length - size of the messages in bytes
- * returns - number of slots
+ *
+ * @length: size of the messages in bytes
+ *
+ * Return: number of slots
*/
static inline u32 mei_data2slots(size_t length)
{
@@ -544,9 +615,11 @@ static inline u32 mei_data2slots(size_t length)
}
/**
- * mei_slots2data- get data in slots - bytes from slots
- * @slots - number of available slots
- * returns - number of bytes in slots
+ * mei_slots2data - get data in slots - bytes from slots
+ *
+ * @slots: number of available slots
+ *
+ * Return: number of bytes in slots
*/
static inline u32 mei_slots2data(int slots)
{
@@ -556,7 +629,9 @@ static inline u32 mei_slots2data(int slots)
/*
* mei init function prototypes
*/
-void mei_device_init(struct mei_device *dev, const struct mei_cfg *cfg);
+void mei_device_init(struct mei_device *dev,
+ struct device *device,
+ const struct mei_hw_ops *hw_ops);
int mei_reset(struct mei_device *dev);
int mei_start(struct mei_device *dev);
int mei_restart(struct mei_device *dev);
@@ -622,12 +697,12 @@ int mei_wd_host_init(struct mei_device *dev);
/*
* mei_watchdog_register - Registering watchdog interface
* once we got connection to the WD Client
- * @dev - mei device
+ * @dev: mei device
*/
int mei_watchdog_register(struct mei_device *dev);
/*
* mei_watchdog_unregister - Unregistering watchdog interface
- * @dev - mei device
+ * @dev: mei device
*/
void mei_watchdog_unregister(struct mei_device *dev);
@@ -723,7 +798,11 @@ static inline int mei_count_full_read_slots(struct mei_device *dev)
return dev->ops->rdbuf_full_slots(dev);
}
-int mei_fw_status(struct mei_device *dev, struct mei_fw_status *fw_status);
+static inline int mei_fw_status(struct mei_device *dev,
+ struct mei_fw_status *fw_status)
+{
+ return dev->ops->fw_status(dev, fw_status);
+}
#define FW_STS_FMT "%08X %08X"
#define FW_STS_PRM(fw_status) \
diff --git a/drivers/misc/mei/nfc.c b/drivers/misc/mei/nfc.c
index 5ccc23bc7690..622654323177 100644
--- a/drivers/misc/mei/nfc.c
+++ b/drivers/misc/mei/nfc.c
@@ -19,7 +19,8 @@
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
-#include <linux/pci.h>
+#include <linux/slab.h>
+
#include <linux/mei_cl_bus.h>
#include "mei_dev.h"
@@ -87,14 +88,20 @@ struct mei_nfc_hci_hdr {
#define MEI_NFC_HEADER_SIZE 10
-/** mei_nfc_dev - NFC mei device
+/**
+ * struct mei_nfc_dev - NFC mei device
*
* @cl: NFC host client
* @cl_info: NFC info host client
* @init_work: perform connection to the info client
+ * @send_wq: send completion wait queue
* @fw_ivn: NFC Interface Version Number
* @vendor_id: NFC manufacturer ID
* @radio_type: NFC radio type
+ * @bus_name: bus name
+ *
+ * @req_id: message counter
+ * @recv_req_id: reception message counter
*/
struct mei_nfc_dev {
struct mei_cl *cl;
@@ -163,7 +170,7 @@ static int mei_nfc_build_bus_name(struct mei_nfc_dev *ndev)
return 0;
default:
- dev_err(&dev->pdev->dev, "Unknown radio type 0x%x\n",
+ dev_err(dev->dev, "Unknown radio type 0x%x\n",
ndev->radio_type);
return -EINVAL;
@@ -175,14 +182,14 @@ static int mei_nfc_build_bus_name(struct mei_nfc_dev *ndev)
ndev->bus_name = "pn544";
return 0;
default:
- dev_err(&dev->pdev->dev, "Unknown radio type 0x%x\n",
+ dev_err(dev->dev, "Unknown radio type 0x%x\n",
ndev->radio_type);
return -EINVAL;
}
default:
- dev_err(&dev->pdev->dev, "Unknown vendor ID 0x%x\n",
+ dev_err(dev->dev, "Unknown vendor ID 0x%x\n",
ndev->vendor_id);
return -EINVAL;
@@ -231,21 +238,21 @@ static int mei_nfc_connect(struct mei_nfc_dev *ndev)
ret = __mei_cl_send(cl, (u8 *)cmd, connect_length);
if (ret < 0) {
- dev_err(&dev->pdev->dev, "Could not send connect cmd\n");
+ dev_err(dev->dev, "Could not send connect cmd\n");
goto err;
}
bytes_recv = __mei_cl_recv(cl, (u8 *)reply, connect_resp_length);
if (bytes_recv < 0) {
- dev_err(&dev->pdev->dev, "Could not read connect response\n");
+ dev_err(dev->dev, "Could not read connect response\n");
ret = bytes_recv;
goto err;
}
- dev_info(&dev->pdev->dev, "IVN 0x%x Vendor ID 0x%x\n",
+ dev_info(dev->dev, "IVN 0x%x Vendor ID 0x%x\n",
connect_resp->fw_ivn, connect_resp->vendor_id);
- dev_info(&dev->pdev->dev, "ME FW %d.%d.%d.%d\n",
+ dev_info(dev->dev, "ME FW %d.%d.%d.%d\n",
connect_resp->me_major, connect_resp->me_minor,
connect_resp->me_hotfix, connect_resp->me_build);
@@ -279,7 +286,7 @@ static int mei_nfc_if_version(struct mei_nfc_dev *ndev)
ret = __mei_cl_send(cl, (u8 *)&cmd, sizeof(struct mei_nfc_cmd));
if (ret < 0) {
- dev_err(&dev->pdev->dev, "Could not send IF version cmd\n");
+ dev_err(dev->dev, "Could not send IF version cmd\n");
return ret;
}
@@ -293,7 +300,7 @@ static int mei_nfc_if_version(struct mei_nfc_dev *ndev)
bytes_recv = __mei_cl_recv(cl, (u8 *)reply, if_version_length);
if (bytes_recv < 0 || bytes_recv < sizeof(struct mei_nfc_reply)) {
- dev_err(&dev->pdev->dev, "Could not read IF version\n");
+ dev_err(dev->dev, "Could not read IF version\n");
ret = -EIO;
goto err;
}
@@ -319,7 +326,7 @@ static int mei_nfc_enable(struct mei_cl_device *cldev)
ret = mei_nfc_connect(ndev);
if (ret < 0) {
- dev_err(&dev->pdev->dev, "Could not connect to NFC");
+ dev_err(dev->dev, "Could not connect to NFC");
return ret;
}
@@ -361,7 +368,7 @@ static int mei_nfc_send(struct mei_cl_device *cldev, u8 *buf, size_t length)
if (!wait_event_interruptible_timeout(ndev->send_wq,
ndev->recv_req_id == ndev->req_id, HZ)) {
- dev_err(&dev->pdev->dev, "NFC MEI command timeout\n");
+ dev_err(dev->dev, "NFC MEI command timeout\n");
err = -ETIME;
} else {
ndev->req_id++;
@@ -418,8 +425,7 @@ static void mei_nfc_init(struct work_struct *work)
if (mei_cl_connect(cl_info, NULL) < 0) {
mutex_unlock(&dev->device_lock);
- dev_err(&dev->pdev->dev,
- "Could not connect to the NFC INFO ME client");
+ dev_err(dev->dev, "Could not connect to the NFC INFO ME client");
goto err;
}
@@ -427,21 +433,19 @@ static void mei_nfc_init(struct work_struct *work)
mutex_unlock(&dev->device_lock);
if (mei_nfc_if_version(ndev) < 0) {
- dev_err(&dev->pdev->dev, "Could not get the NFC interface version");
+ dev_err(dev->dev, "Could not get the NFC interface version");
goto err;
}
- dev_info(&dev->pdev->dev,
- "NFC MEI VERSION: IVN 0x%x Vendor ID 0x%x Type 0x%x\n",
+ dev_info(dev->dev, "NFC MEI VERSION: IVN 0x%x Vendor ID 0x%x Type 0x%x\n",
ndev->fw_ivn, ndev->vendor_id, ndev->radio_type);
mutex_lock(&dev->device_lock);
if (mei_cl_disconnect(cl_info) < 0) {
mutex_unlock(&dev->device_lock);
- dev_err(&dev->pdev->dev,
- "Could not disconnect the NFC INFO ME client");
+ dev_err(dev->dev, "Could not disconnect the NFC INFO ME client");
goto err;
}
@@ -449,15 +453,13 @@ static void mei_nfc_init(struct work_struct *work)
mutex_unlock(&dev->device_lock);
if (mei_nfc_build_bus_name(ndev) < 0) {
- dev_err(&dev->pdev->dev,
- "Could not build the bus ID name\n");
+ dev_err(dev->dev, "Could not build the bus ID name\n");
return;
}
cldev = mei_cl_add_device(dev, mei_nfc_guid, ndev->bus_name, &nfc_ops);
if (!cldev) {
- dev_err(&dev->pdev->dev,
- "Could not add the NFC device to the MEI bus\n");
+ dev_err(dev->dev, "Could not add the NFC device to the MEI bus\n");
goto err;
}
@@ -472,7 +474,6 @@ err:
mei_nfc_free(ndev);
mutex_unlock(&dev->device_lock);
- return;
}
@@ -480,7 +481,8 @@ int mei_nfc_host_init(struct mei_device *dev)
{
struct mei_nfc_dev *ndev = &nfc_dev;
struct mei_cl *cl_info, *cl = NULL;
- int i, ret;
+ struct mei_me_client *me_cl;
+ int ret;
/* already initialized */
if (ndev->cl_info)
@@ -498,40 +500,38 @@ int mei_nfc_host_init(struct mei_device *dev)
}
/* check for valid client id */
- i = mei_me_cl_by_uuid(dev, &mei_nfc_info_guid);
- if (i < 0) {
- dev_info(&dev->pdev->dev, "nfc: failed to find the client\n");
+ me_cl = mei_me_cl_by_uuid(dev, &mei_nfc_info_guid);
+ if (!me_cl) {
+ dev_info(dev->dev, "nfc: failed to find the client\n");
ret = -ENOTTY;
goto err;
}
- cl_info->me_client_id = dev->me_clients[i].client_id;
+ cl_info->me_client_id = me_cl->client_id;
+ cl_info->cl_uuid = me_cl->props.protocol_name;
ret = mei_cl_link(cl_info, MEI_HOST_CLIENT_ID_ANY);
if (ret)
goto err;
- cl_info->device_uuid = mei_nfc_info_guid;
list_add_tail(&cl_info->device_link, &dev->device_list);
/* check for valid client id */
- i = mei_me_cl_by_uuid(dev, &mei_nfc_guid);
- if (i < 0) {
- dev_info(&dev->pdev->dev, "nfc: failed to find the client\n");
+ me_cl = mei_me_cl_by_uuid(dev, &mei_nfc_guid);
+ if (!me_cl) {
+ dev_info(dev->dev, "nfc: failed to find the client\n");
ret = -ENOTTY;
goto err;
}
- cl->me_client_id = dev->me_clients[i].client_id;
+ cl->me_client_id = me_cl->client_id;
+ cl->cl_uuid = me_cl->props.protocol_name;
ret = mei_cl_link(cl, MEI_HOST_CLIENT_ID_ANY);
if (ret)
goto err;
- cl->device_uuid = mei_nfc_guid;
-
-
list_add_tail(&cl->device_link, &dev->device_list);
ndev->req_id = 1;
@@ -551,6 +551,7 @@ err:
void mei_nfc_host_exit(struct mei_device *dev)
{
struct mei_nfc_dev *ndev = &nfc_dev;
+
cancel_work_sync(&ndev->init_work);
}
diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c
index 959c313d84a7..f3225b1643ab 100644
--- a/drivers/misc/mei/pci-me.c
+++ b/drivers/misc/mei/pci-me.c
@@ -98,12 +98,12 @@ static inline void mei_me_unset_pm_domain(struct mei_device *dev) {}
#endif /* CONFIG_PM_RUNTIME */
/**
- * mei_quirk_probe - probe for devices that doesn't valid ME interface
+ * mei_me_quirk_probe - probe for devices that doesn't valid ME interface
*
* @pdev: PCI device structure
* @cfg: per generation config
*
- * returns true if ME Interface is valid, false otherwise
+ * Return: true if ME Interface is valid, false otherwise
*/
static bool mei_me_quirk_probe(struct pci_dev *pdev,
const struct mei_cfg *cfg)
@@ -117,12 +117,12 @@ static bool mei_me_quirk_probe(struct pci_dev *pdev,
}
/**
- * mei_probe - Device Initialization Routine
+ * mei_me_probe - Device Initialization Routine
*
* @pdev: PCI device structure
* @ent: entry in kcs_pci_tbl
*
- * returns 0 on success, <0 on failure.
+ * Return: 0 on success, <0 on failure.
*/
static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
@@ -249,7 +249,7 @@ end:
}
/**
- * mei_remove - Device Removal Routine
+ * mei_me_remove - Device Removal Routine
*
* @pdev: PCI device structure
*
@@ -430,7 +430,7 @@ static int mei_me_pm_runtime_resume(struct device *device)
*/
static inline void mei_me_set_pm_domain(struct mei_device *dev)
{
- struct pci_dev *pdev = dev->pdev;
+ struct pci_dev *pdev = to_pci_dev(dev->dev);
if (pdev->dev.bus && pdev->dev.bus->pm) {
dev->pg_domain.ops = *pdev->dev.bus->pm;
@@ -451,7 +451,7 @@ static inline void mei_me_set_pm_domain(struct mei_device *dev)
static inline void mei_me_unset_pm_domain(struct mei_device *dev)
{
/* stop using pm callbacks if any */
- dev->pdev->dev.pm_domain = NULL;
+ dev->dev->pm_domain = NULL;
}
#endif /* CONFIG_PM_RUNTIME */
diff --git a/drivers/misc/mei/pci-txe.c b/drivers/misc/mei/pci-txe.c
index 74727dda51c1..bee1c6fb7e75 100644
--- a/drivers/misc/mei/pci-txe.c
+++ b/drivers/misc/mei/pci-txe.c
@@ -36,7 +36,8 @@
#include "hw-txe.h"
static const struct pci_device_id mei_txe_pci_tbl[] = {
- {MEI_PCI_DEVICE(0x0F18, mei_txe_cfg)}, /* Baytrail */
+ {PCI_VDEVICE(INTEL, 0x0F18)}, /* Baytrail */
+
{0, }
};
MODULE_DEVICE_TABLE(pci, mei_txe_pci_tbl);
@@ -52,6 +53,7 @@ static inline void mei_txe_unset_pm_domain(struct mei_device *dev) {}
static void mei_txe_pci_iounmap(struct pci_dev *pdev, struct mei_txe_hw *hw)
{
int i;
+
for (i = SEC_BAR; i < NUM_OF_MEM_BARS; i++) {
if (hw->mem_addr[i]) {
pci_iounmap(pdev, hw->mem_addr[i]);
@@ -65,11 +67,10 @@ static void mei_txe_pci_iounmap(struct pci_dev *pdev, struct mei_txe_hw *hw)
* @pdev: PCI device structure
* @ent: entry in mei_txe_pci_tbl
*
- * returns 0 on success, <0 on failure.
+ * Return: 0 on success, <0 on failure.
*/
static int mei_txe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
- const struct mei_cfg *cfg = (struct mei_cfg *)(ent->driver_data);
struct mei_device *dev;
struct mei_txe_hw *hw;
int err;
@@ -100,7 +101,7 @@ static int mei_txe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
}
/* allocates and initializes the mei dev structure */
- dev = mei_txe_dev_init(pdev, cfg);
+ dev = mei_txe_dev_init(pdev);
if (!dev) {
err = -ENOMEM;
goto release_regions;
@@ -377,7 +378,7 @@ static int mei_txe_pm_runtime_resume(struct device *device)
*/
static inline void mei_txe_set_pm_domain(struct mei_device *dev)
{
- struct pci_dev *pdev = dev->pdev;
+ struct pci_dev *pdev = to_pci_dev(dev->dev);
if (pdev->dev.bus && pdev->dev.bus->pm) {
dev->pg_domain.ops = *pdev->dev.bus->pm;
@@ -398,7 +399,7 @@ static inline void mei_txe_set_pm_domain(struct mei_device *dev)
static inline void mei_txe_unset_pm_domain(struct mei_device *dev)
{
/* stop using pm callbacks if any */
- dev->pdev->dev.pm_domain = NULL;
+ dev->dev->pm_domain = NULL;
}
#endif /* CONFIG_PM_RUNTIME */
diff --git a/drivers/misc/mei/wd.c b/drivers/misc/mei/wd.c
index a84a664dfccb..b836dfffceb5 100644
--- a/drivers/misc/mei/wd.c
+++ b/drivers/misc/mei/wd.c
@@ -17,7 +17,6 @@
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
-#include <linux/pci.h>
#include <linux/sched.h>
#include <linux/watchdog.h>
@@ -42,7 +41,7 @@ const uuid_le mei_wd_guid = UUID_LE(0x05B79A6F, 0x4628, 0x4D7F, 0x89,
static void mei_wd_set_start_timeout(struct mei_device *dev, u16 timeout)
{
- dev_dbg(&dev->pdev->dev, "wd: set timeout=%d.\n", timeout);
+ dev_dbg(dev->dev, "wd: set timeout=%d.\n", timeout);
memcpy(dev->wd_data, mei_start_wd_params, MEI_WD_HDR_SIZE);
memcpy(dev->wd_data + MEI_WD_HDR_SIZE, &timeout, sizeof(u16));
}
@@ -52,14 +51,14 @@ static void mei_wd_set_start_timeout(struct mei_device *dev, u16 timeout)
*
* @dev: the device structure
*
- * returns -ENOTTY if wd client cannot be found
+ * Return: -ENOTTY if wd client cannot be found
* -EIO if write has failed
* 0 on success
*/
int mei_wd_host_init(struct mei_device *dev)
{
struct mei_cl *cl = &dev->wd_cl;
- int id;
+ struct mei_me_client *me_cl;
int ret;
mei_cl_init(cl, dev);
@@ -69,25 +68,26 @@ int mei_wd_host_init(struct mei_device *dev)
/* check for valid client id */
- id = mei_me_cl_by_uuid(dev, &mei_wd_guid);
- if (id < 0) {
- dev_info(&dev->pdev->dev, "wd: failed to find the client\n");
+ me_cl = mei_me_cl_by_uuid(dev, &mei_wd_guid);
+ if (!me_cl) {
+ dev_info(dev->dev, "wd: failed to find the client\n");
return -ENOTTY;
}
- cl->me_client_id = dev->me_clients[id].client_id;
+ cl->me_client_id = me_cl->client_id;
+ cl->cl_uuid = me_cl->props.protocol_name;
ret = mei_cl_link(cl, MEI_WD_HOST_CLIENT_ID);
if (ret < 0) {
- dev_info(&dev->pdev->dev, "wd: failed link client\n");
+ dev_info(dev->dev, "wd: failed link client\n");
return ret;
}
ret = mei_cl_connect(cl, NULL);
if (ret) {
- dev_err(&dev->pdev->dev, "wd: failed to connect = %d\n", ret);
+ dev_err(dev->dev, "wd: failed to connect = %d\n", ret);
mei_cl_unlink(cl);
return ret;
}
@@ -105,7 +105,7 @@ int mei_wd_host_init(struct mei_device *dev)
*
* @dev: the device structure
*
- * returns 0 if success,
+ * Return: 0 if success,
* -EIO when message send fails
* -EINVAL when invalid message is to be sent
* -ENODEV on flow control failure
@@ -127,19 +127,19 @@ int mei_wd_send(struct mei_device *dev)
else if (!memcmp(dev->wd_data, mei_stop_wd_params, MEI_WD_HDR_SIZE))
hdr.length = MEI_WD_STOP_MSG_SIZE;
else {
- dev_err(&dev->pdev->dev, "wd: invalid message is to be sent, aborting\n");
+ dev_err(dev->dev, "wd: invalid message is to be sent, aborting\n");
return -EINVAL;
}
ret = mei_write_message(dev, &hdr, dev->wd_data);
if (ret) {
- dev_err(&dev->pdev->dev, "wd: write message failed\n");
+ dev_err(dev->dev, "wd: write message failed\n");
return ret;
}
ret = mei_cl_flow_ctrl_reduce(cl);
if (ret) {
- dev_err(&dev->pdev->dev, "wd: flow_ctrl_reduce failed.\n");
+ dev_err(dev->dev, "wd: flow_ctrl_reduce failed.\n");
return ret;
}
@@ -150,9 +150,8 @@ int mei_wd_send(struct mei_device *dev)
* mei_wd_stop - sends watchdog stop message to fw.
*
* @dev: the device structure
- * @preserve: indicate if to keep the timeout value
*
- * returns 0 if success
+ * Return: 0 if success
* on error:
* -EIO when message send fails
* -EINVAL when invalid message is to be sent
@@ -192,11 +191,10 @@ int mei_wd_stop(struct mei_device *dev)
if (dev->wd_state != MEI_WD_IDLE) {
/* timeout */
ret = -ETIME;
- dev_warn(&dev->pdev->dev,
- "wd: stop failed to complete ret=%d.\n", ret);
+ dev_warn(dev->dev, "wd: stop failed to complete ret=%d\n", ret);
goto err;
}
- dev_dbg(&dev->pdev->dev, "wd: stop completed after %u msec\n",
+ dev_dbg(dev->dev, "wd: stop completed after %u msec\n",
MEI_WD_STOP_TIMEOUT - jiffies_to_msecs(ret));
return 0;
err:
@@ -208,7 +206,7 @@ err:
*
* @wd_dev - watchdog device struct
*
- * returns 0 if success, negative errno code for failure
+ * Return: 0 if success, negative errno code for failure
*/
static int mei_wd_ops_start(struct watchdog_device *wd_dev)
{
@@ -222,15 +220,13 @@ static int mei_wd_ops_start(struct watchdog_device *wd_dev)
mutex_lock(&dev->device_lock);
if (dev->dev_state != MEI_DEV_ENABLED) {
- dev_dbg(&dev->pdev->dev,
- "wd: dev_state != MEI_DEV_ENABLED dev_state = %s\n",
+ dev_dbg(dev->dev, "wd: dev_state != MEI_DEV_ENABLED dev_state = %s\n",
mei_dev_state_str(dev->dev_state));
goto end_unlock;
}
if (dev->wd_cl.state != MEI_FILE_CONNECTED) {
- dev_dbg(&dev->pdev->dev,
- "MEI Driver is not connected to Watchdog Client\n");
+ dev_dbg(dev->dev, "MEI Driver is not connected to Watchdog Client\n");
goto end_unlock;
}
@@ -247,7 +243,7 @@ end_unlock:
*
* @wd_dev - watchdog device struct
*
- * returns 0 if success, negative errno code for failure
+ * Return: 0 if success, negative errno code for failure
*/
static int mei_wd_ops_stop(struct watchdog_device *wd_dev)
{
@@ -269,7 +265,7 @@ static int mei_wd_ops_stop(struct watchdog_device *wd_dev)
*
* @wd_dev - watchdog device struct
*
- * returns 0 if success, negative errno code for failure
+ * Return: 0 if success, negative errno code for failure
*/
static int mei_wd_ops_ping(struct watchdog_device *wd_dev)
{
@@ -283,7 +279,7 @@ static int mei_wd_ops_ping(struct watchdog_device *wd_dev)
mutex_lock(&dev->device_lock);
if (dev->wd_cl.state != MEI_FILE_CONNECTED) {
- dev_err(&dev->pdev->dev, "wd: not connected.\n");
+ dev_err(dev->dev, "wd: not connected.\n");
ret = -ENODEV;
goto end;
}
@@ -296,7 +292,7 @@ static int mei_wd_ops_ping(struct watchdog_device *wd_dev)
/* Check if we can send the ping to HW*/
if (ret && mei_hbuf_acquire(dev)) {
- dev_dbg(&dev->pdev->dev, "wd: sending ping\n");
+ dev_dbg(dev->dev, "wd: sending ping\n");
ret = mei_wd_send(dev);
if (ret)
@@ -317,7 +313,7 @@ end:
* @wd_dev - watchdog device struct
* @timeout - timeout value to set
*
- * returns 0 if success, negative errno code for failure
+ * Return: 0 if success, negative errno code for failure
*/
static int mei_wd_ops_set_timeout(struct watchdog_device *wd_dev,
unsigned int timeout)
@@ -379,13 +375,12 @@ int mei_watchdog_register(struct mei_device *dev)
ret = watchdog_register_device(&amt_wd_dev);
mutex_lock(&dev->device_lock);
if (ret) {
- dev_err(&dev->pdev->dev, "wd: unable to register watchdog device = %d.\n",
+ dev_err(dev->dev, "wd: unable to register watchdog device = %d.\n",
ret);
return ret;
}
- dev_dbg(&dev->pdev->dev,
- "wd: successfully register watchdog interface.\n");
+ dev_dbg(dev->dev, "wd: successfully register watchdog interface.\n");
watchdog_set_drvdata(&amt_wd_dev, dev);
return 0;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-12 17:23:58 +0100