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authorVishal Verma <vishal.l.verma@intel.com>2015-07-09 13:25:36 -0600
committerDan Williams <dan.j.williams@intel.com>2015-07-27 22:53:19 -0400
commit39c686b862cdb2049b90e095b6c6c727b2a7ab60 (patch)
tree4858a38b3c4441bad3e9599ff8cf0de01be13817 /tools/testing/nvdimm
parentec92777f2ba93c00387b8fe53780c25adc57c744 (diff)
downloadop-kernel-dev-39c686b862cdb2049b90e095b6c6c727b2a7ab60.zip
op-kernel-dev-39c686b862cdb2049b90e095b6c6c727b2a7ab60.tar.gz
libnvdimm: Add DSM support for Address Range Scrub commands
Add support for the three ARS DSM commands: - Query ARS Capabilities - Queries the firmware to check if a given range supports scrub, and if so, which type (persistent vs. volatile) - Start ARS - Starts a scrub for a given range/type - Query ARS Status - Checks status of a previously started scrub, and provides the error logs if any. The commands are described by the example DSM spec at: http://pmem.io/documents/NVDIMM_DSM_Interface_Example.pdf Also add these commands to the nfit_test test framework, and return canned data. Signed-off-by: Vishal Verma <vishal.l.verma@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'tools/testing/nvdimm')
-rw-r--r--tools/testing/nvdimm/test/nfit.c199
1 files changed, 140 insertions, 59 deletions
diff --git a/tools/testing/nvdimm/test/nfit.c b/tools/testing/nvdimm/test/nfit.c
index d0bdae4..28dba91 100644
--- a/tools/testing/nvdimm/test/nfit.c
+++ b/tools/testing/nvdimm/test/nfit.c
@@ -147,75 +147,153 @@ static struct nfit_test *to_nfit_test(struct device *dev)
return container_of(pdev, struct nfit_test, pdev);
}
+static int nfit_test_cmd_get_config_size(struct nd_cmd_get_config_size *nd_cmd,
+ unsigned int buf_len)
+{
+ if (buf_len < sizeof(*nd_cmd))
+ return -EINVAL;
+
+ nd_cmd->status = 0;
+ nd_cmd->config_size = LABEL_SIZE;
+ nd_cmd->max_xfer = SZ_4K;
+
+ return 0;
+}
+
+static int nfit_test_cmd_get_config_data(struct nd_cmd_get_config_data_hdr
+ *nd_cmd, unsigned int buf_len, void *label)
+{
+ unsigned int len, offset = nd_cmd->in_offset;
+ int rc;
+
+ if (buf_len < sizeof(*nd_cmd))
+ return -EINVAL;
+ if (offset >= LABEL_SIZE)
+ return -EINVAL;
+ if (nd_cmd->in_length + sizeof(*nd_cmd) > buf_len)
+ return -EINVAL;
+
+ nd_cmd->status = 0;
+ len = min(nd_cmd->in_length, LABEL_SIZE - offset);
+ memcpy(nd_cmd->out_buf, label + offset, len);
+ rc = buf_len - sizeof(*nd_cmd) - len;
+
+ return rc;
+}
+
+static int nfit_test_cmd_set_config_data(struct nd_cmd_set_config_hdr *nd_cmd,
+ unsigned int buf_len, void *label)
+{
+ unsigned int len, offset = nd_cmd->in_offset;
+ u32 *status;
+ int rc;
+
+ if (buf_len < sizeof(*nd_cmd))
+ return -EINVAL;
+ if (offset >= LABEL_SIZE)
+ return -EINVAL;
+ if (nd_cmd->in_length + sizeof(*nd_cmd) + 4 > buf_len)
+ return -EINVAL;
+
+ status = (void *)nd_cmd + nd_cmd->in_length + sizeof(*nd_cmd);
+ *status = 0;
+ len = min(nd_cmd->in_length, LABEL_SIZE - offset);
+ memcpy(label + offset, nd_cmd->in_buf, len);
+ rc = buf_len - sizeof(*nd_cmd) - (len + 4);
+
+ return rc;
+}
+
+static int nfit_test_cmd_ars_cap(struct nd_cmd_ars_cap *nd_cmd,
+ unsigned int buf_len)
+{
+ if (buf_len < sizeof(*nd_cmd))
+ return -EINVAL;
+
+ nd_cmd->max_ars_out = 256;
+ nd_cmd->status = (ND_ARS_PERSISTENT | ND_ARS_VOLATILE) << 16;
+
+ return 0;
+}
+
+static int nfit_test_cmd_ars_start(struct nd_cmd_ars_start *nd_cmd,
+ unsigned int buf_len)
+{
+ if (buf_len < sizeof(*nd_cmd))
+ return -EINVAL;
+
+ nd_cmd->status = 0;
+
+ return 0;
+}
+
+static int nfit_test_cmd_ars_status(struct nd_cmd_ars_status *nd_cmd,
+ unsigned int buf_len)
+{
+ if (buf_len < sizeof(*nd_cmd))
+ return -EINVAL;
+
+ nd_cmd->out_length = 256;
+ nd_cmd->num_records = 0;
+ nd_cmd->status = 0;
+
+ return 0;
+}
+
static int nfit_test_ctl(struct nvdimm_bus_descriptor *nd_desc,
struct nvdimm *nvdimm, unsigned int cmd, void *buf,
unsigned int buf_len)
{
struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
struct nfit_test *t = container_of(acpi_desc, typeof(*t), acpi_desc);
- struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
- int i, rc;
+ int i, rc = 0;
+
+ if (nvdimm) {
+ struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
- if (!nfit_mem || !test_bit(cmd, &nfit_mem->dsm_mask))
- return -ENOTTY;
+ if (!nfit_mem || !test_bit(cmd, &nfit_mem->dsm_mask))
+ return -ENOTTY;
- /* lookup label space for the given dimm */
- for (i = 0; i < ARRAY_SIZE(handle); i++)
- if (__to_nfit_memdev(nfit_mem)->device_handle == handle[i])
+ /* lookup label space for the given dimm */
+ for (i = 0; i < ARRAY_SIZE(handle); i++)
+ if (__to_nfit_memdev(nfit_mem)->device_handle ==
+ handle[i])
+ break;
+ if (i >= ARRAY_SIZE(handle))
+ return -ENXIO;
+
+ switch (cmd) {
+ case ND_CMD_GET_CONFIG_SIZE:
+ rc = nfit_test_cmd_get_config_size(buf, buf_len);
break;
- if (i >= ARRAY_SIZE(handle))
- return -ENXIO;
+ case ND_CMD_GET_CONFIG_DATA:
+ rc = nfit_test_cmd_get_config_data(buf, buf_len,
+ t->label[i]);
+ break;
+ case ND_CMD_SET_CONFIG_DATA:
+ rc = nfit_test_cmd_set_config_data(buf, buf_len,
+ t->label[i]);
+ break;
+ default:
+ return -ENOTTY;
+ }
+ } else {
+ if (!nd_desc || !test_bit(cmd, &nd_desc->dsm_mask))
+ return -ENOTTY;
- switch (cmd) {
- case ND_CMD_GET_CONFIG_SIZE: {
- struct nd_cmd_get_config_size *nd_cmd = buf;
-
- if (buf_len < sizeof(*nd_cmd))
- return -EINVAL;
- nd_cmd->status = 0;
- nd_cmd->config_size = LABEL_SIZE;
- nd_cmd->max_xfer = SZ_4K;
- rc = 0;
- break;
- }
- case ND_CMD_GET_CONFIG_DATA: {
- struct nd_cmd_get_config_data_hdr *nd_cmd = buf;
- unsigned int len, offset = nd_cmd->in_offset;
-
- if (buf_len < sizeof(*nd_cmd))
- return -EINVAL;
- if (offset >= LABEL_SIZE)
- return -EINVAL;
- if (nd_cmd->in_length + sizeof(*nd_cmd) > buf_len)
- return -EINVAL;
-
- nd_cmd->status = 0;
- len = min(nd_cmd->in_length, LABEL_SIZE - offset);
- memcpy(nd_cmd->out_buf, t->label[i] + offset, len);
- rc = buf_len - sizeof(*nd_cmd) - len;
- break;
- }
- case ND_CMD_SET_CONFIG_DATA: {
- struct nd_cmd_set_config_hdr *nd_cmd = buf;
- unsigned int len, offset = nd_cmd->in_offset;
- u32 *status;
-
- if (buf_len < sizeof(*nd_cmd))
- return -EINVAL;
- if (offset >= LABEL_SIZE)
- return -EINVAL;
- if (nd_cmd->in_length + sizeof(*nd_cmd) + 4 > buf_len)
- return -EINVAL;
-
- status = buf + nd_cmd->in_length + sizeof(*nd_cmd);
- *status = 0;
- len = min(nd_cmd->in_length, LABEL_SIZE - offset);
- memcpy(t->label[i] + offset, nd_cmd->in_buf, len);
- rc = buf_len - sizeof(*nd_cmd) - (len + 4);
- break;
- }
- default:
- return -ENOTTY;
+ switch (cmd) {
+ case ND_CMD_ARS_CAP:
+ rc = nfit_test_cmd_ars_cap(buf, buf_len);
+ break;
+ case ND_CMD_ARS_START:
+ rc = nfit_test_cmd_ars_start(buf, buf_len);
+ break;
+ case ND_CMD_ARS_STATUS:
+ rc = nfit_test_cmd_ars_status(buf, buf_len);
+ break;
+ default:
+ return -ENOTTY;
+ }
}
return rc;
@@ -876,6 +954,9 @@ static void nfit_test0_setup(struct nfit_test *t)
set_bit(ND_CMD_GET_CONFIG_SIZE, &acpi_desc->dimm_dsm_force_en);
set_bit(ND_CMD_GET_CONFIG_DATA, &acpi_desc->dimm_dsm_force_en);
set_bit(ND_CMD_SET_CONFIG_DATA, &acpi_desc->dimm_dsm_force_en);
+ set_bit(ND_CMD_ARS_CAP, &acpi_desc->bus_dsm_force_en);
+ set_bit(ND_CMD_ARS_START, &acpi_desc->bus_dsm_force_en);
+ set_bit(ND_CMD_ARS_STATUS, &acpi_desc->bus_dsm_force_en);
nd_desc = &acpi_desc->nd_desc;
nd_desc->ndctl = nfit_test_ctl;
}
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