#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
}
/**
- * 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;
-
- mei_hbm_idle(dev);
+ struct mei_me_client *me_cl, *next;
+ 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;
-
- mei_hbm_reset(dev);
-
- /* count how many ME clients we have */
- for_each_set_bit(b, dev->me_clients_map, MEI_CLIENTS_MAX)
- dev->me_clients_num++;
+ dev->me_client_presentation_num = 0;
+ dev->me_client_index = 0;
- if (dev->me_clients_num == 0)
- return 0;
+ mei_me_cl_remove_all(dev);
- 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;
+ mei_hbm_idle(dev);
}
/**
* 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
cmd->me_addr = cl->me_client_id;
}
+/**
+ * mei_hbm_cl_write - write simple hbm client message
+ *
+ * @dev: the device structure
+ * @cl: client
+ * @hbm_cmd: host bus message command
+ * @len: buffer length
+ */
+static inline
+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 - tells if they have the same address
*
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 */
return 0;
}
+/*
+ * mei_hbm_me_cl_add - add new me client to the list
+ *
+ * @dev: the device structure
+ * @res: hbm property response
+ *
+ * returns 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
*
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) {
*/
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);
}
/**
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) {
+ me_cl = mei_me_cl_by_id(dev, flow->me_addr);
+ if (!me_cl) {
dev_err(&dev->pdev->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->pdev->dev, "recv flow ctrl msg ME %d (single) creds = %d.\n",
+ flow->me_addr, me_cl->mei_flow_ctrl_creds);
return 0;
}
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;
+ dev_dbg(&dev->pdev->dev, "flow ctrl msg for host %d ME %d creds %d.\n",
+ flow_control->host_addr, flow_control->me_addr,
+ cl->mei_flow_ctrl_creds);
+ break;
}
}
}
*/
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);
}
/**
*/
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);
}
/**
*/
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_write_message(dev, mei_hdr, dev->wr_msg.data);
+ return mei_hbm_cl_write(dev, cl, CLIENT_CONNECT_REQ_CMD, len);
}
/**
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;
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->pdev->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);
- 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);
+ dev_err(&dev->pdev->dev, "hbm: properties response: wrong status = %d %s\n",
+ props_res->status,
+ mei_hbm_status_str(props_res->status));
return -EPROTO;
}
- 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;
- }
+ mei_hbm_me_cl_add(dev, props_res);
- me_client->props = props_res->client_properties;
dev->me_client_index++;
dev->me_client_presentation_num++;
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) {
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 */
projects / firefly-linux-kernel-4.4.55.git / blobdiff