diff options
| -rw-r--r-- | drivers/misc/mei/client.c | 34 | ||||
| -rw-r--r-- | drivers/misc/mei/debugfs.c | 19 | ||||
| -rw-r--r-- | drivers/misc/mei/hbm.c | 116 | ||||
| -rw-r--r-- | drivers/misc/mei/init.c | 1 | ||||
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 4 |
5 files changed, 71 insertions, 103 deletions
diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c index a20e6e9422f8..244b54692b48 100644 --- a/drivers/misc/mei/client.c +++ b/drivers/misc/mei/client.c @@ -38,12 +38,11 @@ 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 &dev->me_clients[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 NULL; } @@ -62,12 +61,12 @@ struct mei_me_client *mei_me_cl_by_uuid(const struct mei_device *dev, struct mei_me_client *mei_me_cl_by_id(struct mei_device *dev, u8 client_id) { - int i; - for (i = 0; i < dev->me_clients_num; i++) - if (dev->me_clients[i].client_id == client_id) - return &dev->me_clients[i]; + struct mei_me_client *me_cl; + list_for_each_entry(me_cl, &dev->me_clients, list) + if (me_cl->client_id == client_id) + return me_cl; return NULL; } @@ -396,19 +395,19 @@ 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); } @@ -653,9 +652,6 @@ int mei_cl_flow_ctrl_creds(struct mei_cl *cl) dev = cl->dev; - if (!dev->me_clients_num) - return 0; - if (cl->mei_flow_ctrl_creds > 0) return 1; diff --git a/drivers/misc/mei/debugfs.c b/drivers/misc/mei/debugfs.c index ced5b777c70f..3b032881622d 100644 --- a/drivers/misc/mei/debugfs.c +++ b/drivers/misc/mei/debugfs.c @@ -28,10 +28,10 @@ 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; + struct mei_me_client *me_cl; const size_t bufsz = 1024; char *buf = kzalloc(bufsz, GFP_KERNEL); - int i; + int i = 0; int pos = 0; int ret; @@ -47,20 +47,19 @@ static ssize_t mei_dbgfs_read_meclients(struct file *fp, char __user *ubuf, 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); + 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); } out: mutex_unlock(&dev->device_lock); diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c index 0b21675967f9..45659de14186 100644 --- a/drivers/misc/mei/hbm.c +++ b/drivers/misc/mei/hbm.c @@ -77,51 +77,20 @@ void mei_hbm_idle(struct mei_device *dev) */ void mei_hbm_reset(struct mei_device *dev) { - dev->me_clients_num = 0; + struct mei_me_client *me_cl, *next; + dev->me_client_presentation_num = 0; dev->me_client_index = 0; - kfree(dev->me_clients); - dev->me_clients = NULL; + list_for_each_entry_safe(me_cl, next, &dev->me_clients, list) { + list_del(&me_cl->list); + kfree(me_cl); + } mei_hbm_idle(dev); } /** - * mei_hbm_me_cl_allocate - allocates storage for me clients - * - * @dev: the device structure - * - * returns 0 on success -ENOMEM on allocation failure - */ -static int mei_hbm_me_cl_allocate(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++; - - if (dev->me_clients_num == 0) - return 0; - - 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_cl_hdr - construct client hbm header * * @cl: client @@ -213,6 +182,8 @@ 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 */ @@ -267,6 +238,32 @@ 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 + * + * 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 * @@ -282,11 +279,8 @@ 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); @@ -298,15 +292,11 @@ 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->me_addr = next_client_index; @@ -441,11 +431,10 @@ static void mei_hbm_cl_flow_control_res(struct mei_device *dev, 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; } } } @@ -641,7 +630,6 @@ bool mei_hbm_version_is_supported(struct mei_device *dev) 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; @@ -763,13 +751,14 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr) 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", @@ -777,20 +766,8 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr) return -EPROTO; } - if (me_client->client_id != props_res->me_addr) { - dev_err(&dev->pdev->dev, "hbm: properties response: address mismatch %d ?= %d\n", - me_client->client_id, props_res->me_addr); - 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++; @@ -809,7 +786,7 @@ 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) { @@ -818,11 +795,6 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr) 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 */ diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index 006929222481..73ccbb65d4ff 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -356,6 +356,7 @@ void mei_device_init(struct mei_device *dev, const struct mei_cfg *cfg) /* 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); diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 0b0d6135543b..76d8aa30e90d 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -175,6 +175,7 @@ struct mei_fw_status { * @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; @@ -478,10 +479,9 @@ struct mei_device { struct hbm_version version; - 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; |