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path: root/drivers/target/target_core_rd.c
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Diffstat (limited to 'drivers/target/target_core_rd.c')
-rw-r--r--drivers/target/target_core_rd.c27
1 files changed, 23 insertions, 4 deletions
diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_rd.c
index bf936bbeccfe..6648c1c90e19 100644
--- a/drivers/target/target_core_rd.c
+++ b/drivers/target/target_core_rd.c
@@ -530,12 +530,13 @@ rd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
}
enum {
- Opt_rd_pages, Opt_rd_nullio, Opt_err
+ Opt_rd_pages, Opt_rd_nullio, Opt_rd_dummy, Opt_err
};
static match_table_t tokens = {
{Opt_rd_pages, "rd_pages=%d"},
{Opt_rd_nullio, "rd_nullio=%d"},
+ {Opt_rd_dummy, "rd_dummy=%d"},
{Opt_err, NULL}
};
@@ -574,6 +575,14 @@ static ssize_t rd_set_configfs_dev_params(struct se_device *dev,
pr_debug("RAMDISK: Setting NULLIO flag: %d\n", arg);
rd_dev->rd_flags |= RDF_NULLIO;
break;
+ case Opt_rd_dummy:
+ match_int(args, &arg);
+ if (arg != 1)
+ break;
+
+ pr_debug("RAMDISK: Setting DUMMY flag: %d\n", arg);
+ rd_dev->rd_flags |= RDF_DUMMY;
+ break;
default:
break;
}
@@ -590,12 +599,22 @@ static ssize_t rd_show_configfs_dev_params(struct se_device *dev, char *b)
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"
- " SG_table_count: %u nullio: %d\n", rd_dev->rd_page_count,
+ " SG_table_count: %u nullio: %d dummy: %d\n",
+ rd_dev->rd_page_count,
PAGE_SIZE, rd_dev->sg_table_count,
- !!(rd_dev->rd_flags & RDF_NULLIO));
+ !!(rd_dev->rd_flags & RDF_NULLIO),
+ !!(rd_dev->rd_flags & RDF_DUMMY));
return bl;
}
+static u32 rd_get_device_type(struct se_device *dev)
+{
+ if (RD_DEV(dev)->rd_flags & RDF_DUMMY)
+ return 0x3f; /* Unknown device type, not connected */
+ else
+ return sbc_get_device_type(dev);
+}
+
static sector_t rd_get_blocks(struct se_device *dev)
{
struct rd_dev *rd_dev = RD_DEV(dev);
@@ -647,7 +666,7 @@ static const struct target_backend_ops rd_mcp_ops = {
.parse_cdb = rd_parse_cdb,
.set_configfs_dev_params = rd_set_configfs_dev_params,
.show_configfs_dev_params = rd_show_configfs_dev_params,
- .get_device_type = sbc_get_device_type,
+ .get_device_type = rd_get_device_type,
.get_blocks = rd_get_blocks,
.init_prot = rd_init_prot,
.free_prot = rd_free_prot,