diff options
Diffstat (limited to 'drivers/target/target_core_rd.c')
| -rw-r--r-- | drivers/target/target_core_rd.c | 94 |
1 files changed, 35 insertions, 59 deletions
diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_rd.c index d00bbe33ff8..d083f39c4b6 100644 --- a/drivers/target/target_core_rd.c +++ b/drivers/target/target_core_rd.c @@ -41,7 +41,10 @@ #include "target_core_rd.h" -static struct se_subsystem_api rd_mcp_template; +static inline struct rd_dev *RD_DEV(struct se_device *dev) +{ + return container_of(dev, struct rd_dev, dev); +} /* rd_attach_hba(): (Part of se_subsystem_api_t template) * @@ -196,7 +199,7 @@ static int rd_build_device_space(struct rd_dev *rd_dev) return 0; } -static void *rd_allocate_virtdevice(struct se_hba *hba, const char *name) +static struct se_device *rd_alloc_device(struct se_hba *hba, const char *name) { struct rd_dev *rd_dev; struct rd_host *rd_host = hba->hba_ptr; @@ -209,39 +212,27 @@ static void *rd_allocate_virtdevice(struct se_hba *hba, const char *name) rd_dev->rd_host = rd_host; - return rd_dev; + return &rd_dev->dev; } -static struct se_device *rd_create_virtdevice(struct se_hba *hba, - struct se_subsystem_dev *se_dev, void *p) +static int rd_configure_device(struct se_device *dev) { - struct se_device *dev; - struct se_dev_limits dev_limits; - struct rd_dev *rd_dev = p; - struct rd_host *rd_host = hba->hba_ptr; - int dev_flags = 0, ret; - char prod[16], rev[4]; + struct rd_dev *rd_dev = RD_DEV(dev); + struct rd_host *rd_host = dev->se_hba->hba_ptr; + int ret; - memset(&dev_limits, 0, sizeof(struct se_dev_limits)); + if (!(rd_dev->rd_flags & RDF_HAS_PAGE_COUNT)) { + pr_debug("Missing rd_pages= parameter\n"); + return -EINVAL; + } ret = rd_build_device_space(rd_dev); if (ret < 0) goto fail; - snprintf(prod, 16, "RAMDISK-MCP"); - snprintf(rev, 4, "%s", RD_MCP_VERSION); - - dev_limits.limits.logical_block_size = RD_BLOCKSIZE; - dev_limits.limits.max_hw_sectors = UINT_MAX; - dev_limits.limits.max_sectors = UINT_MAX; - dev_limits.hw_queue_depth = RD_MAX_DEVICE_QUEUE_DEPTH; - dev_limits.queue_depth = RD_DEVICE_QUEUE_DEPTH; - - dev = transport_add_device_to_core_hba(hba, - &rd_mcp_template, se_dev, dev_flags, rd_dev, - &dev_limits, prod, rev); - if (!dev) - goto fail; + dev->dev_attrib.hw_block_size = RD_BLOCKSIZE; + dev->dev_attrib.hw_max_sectors = UINT_MAX; + dev->dev_attrib.hw_queue_depth = RD_MAX_DEVICE_QUEUE_DEPTH; rd_dev->rd_dev_id = rd_host->rd_host_dev_id_count++; @@ -251,16 +242,16 @@ static struct se_device *rd_create_virtdevice(struct se_hba *hba, rd_dev->sg_table_count, (unsigned long)(rd_dev->rd_page_count * PAGE_SIZE)); - return dev; + return 0; fail: rd_release_device_space(rd_dev); - return ERR_PTR(ret); + return ret; } -static void rd_free_device(void *p) +static void rd_free_device(struct se_device *dev) { - struct rd_dev *rd_dev = p; + struct rd_dev *rd_dev = RD_DEV(dev); rd_release_device_space(rd_dev); kfree(rd_dev); @@ -290,7 +281,7 @@ static int rd_execute_rw(struct se_cmd *cmd) u32 sgl_nents = cmd->t_data_nents; enum dma_data_direction data_direction = cmd->data_direction; struct se_device *se_dev = cmd->se_dev; - struct rd_dev *dev = se_dev->dev_ptr; + struct rd_dev *dev = RD_DEV(se_dev); struct rd_dev_sg_table *table; struct scatterlist *rd_sg; struct sg_mapping_iter m; @@ -300,7 +291,7 @@ static int rd_execute_rw(struct se_cmd *cmd) u32 src_len; u64 tmp; - tmp = cmd->t_task_lba * se_dev->se_sub_dev->se_dev_attrib.block_size; + tmp = cmd->t_task_lba * se_dev->dev_attrib.block_size; rd_offset = do_div(tmp, PAGE_SIZE); rd_page = tmp; rd_size = cmd->data_length; @@ -378,13 +369,10 @@ static match_table_t tokens = { {Opt_err, NULL} }; -static ssize_t rd_set_configfs_dev_params( - struct se_hba *hba, - struct se_subsystem_dev *se_dev, - const char *page, - ssize_t count) +static ssize_t rd_set_configfs_dev_params(struct se_device *dev, + const char *page, ssize_t count) { - struct rd_dev *rd_dev = se_dev->se_dev_su_ptr; + struct rd_dev *rd_dev = RD_DEV(dev); char *orig, *ptr, *opts; substring_t args[MAX_OPT_ARGS]; int ret = 0, arg, token; @@ -417,24 +405,10 @@ static ssize_t rd_set_configfs_dev_params( return (!ret) ? count : ret; } -static ssize_t rd_check_configfs_dev_params(struct se_hba *hba, struct se_subsystem_dev *se_dev) +static ssize_t rd_show_configfs_dev_params(struct se_device *dev, char *b) { - struct rd_dev *rd_dev = se_dev->se_dev_su_ptr; - - if (!(rd_dev->rd_flags & RDF_HAS_PAGE_COUNT)) { - pr_debug("Missing rd_pages= parameter\n"); - return -EINVAL; - } + struct rd_dev *rd_dev = RD_DEV(dev); - return 0; -} - -static ssize_t rd_show_configfs_dev_params( - struct se_hba *hba, - struct se_subsystem_dev *se_dev, - char *b) -{ - struct rd_dev *rd_dev = se_dev->se_dev_su_ptr; ssize_t bl = sprintf(b, "TCM RamDisk ID: %u RamDisk Makeup: rd_mcp\n", rd_dev->rd_dev_id); bl += sprintf(b + bl, " PAGES/PAGE_SIZE: %u*%lu" @@ -455,9 +429,10 @@ static u32 rd_get_device_type(struct se_device *dev) static sector_t rd_get_blocks(struct se_device *dev) { - struct rd_dev *rd_dev = dev->dev_ptr; + struct rd_dev *rd_dev = RD_DEV(dev); + unsigned long long blocks_long = ((rd_dev->rd_page_count * PAGE_SIZE) / - dev->se_sub_dev->se_dev_attrib.block_size) - 1; + dev->dev_attrib.block_size) - 1; return blocks_long; } @@ -473,14 +448,15 @@ static int rd_parse_cdb(struct se_cmd *cmd) static struct se_subsystem_api rd_mcp_template = { .name = "rd_mcp", + .inquiry_prod = "RAMDISK-MCP", + .inquiry_rev = RD_MCP_VERSION, .transport_type = TRANSPORT_PLUGIN_VHBA_VDEV, .attach_hba = rd_attach_hba, .detach_hba = rd_detach_hba, - .allocate_virtdevice = rd_allocate_virtdevice, - .create_virtdevice = rd_create_virtdevice, + .alloc_device = rd_alloc_device, + .configure_device = rd_configure_device, .free_device = rd_free_device, .parse_cdb = rd_parse_cdb, - .check_configfs_dev_params = rd_check_configfs_dev_params, .set_configfs_dev_params = rd_set_configfs_dev_params, .show_configfs_dev_params = rd_show_configfs_dev_params, .get_device_rev = rd_get_device_rev, |