*/
#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
#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)
{
}
/**
- * 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
}
/**
- * 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;
*
* @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)
{
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 */
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;
}
*
* @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)
{
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;
}
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)
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);
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;
}
* @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)
{
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;
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);
/**
* 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)
{
* @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);
}
/**
* @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;
}
* @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;
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);
}
}
* @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);
}
/**
* @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;
}
/**
* @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;
continue;
}
- if (cb->fop_type != MEI_FOP_CONNECT)
+ if (cb->fop_type != fop_type)
continue;
if (mei_hbm_cl_addr_equal(cl, rs)) {
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);
}
* @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)
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)
{
* 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);
}
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;
}
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);
* 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))
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;
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 */
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;
projects / firefly-linux-kernel-4.4.55.git / blobdiff