mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-15 15:15:47 +00:00
Code Issues Releases Wiki Activity

tools/testing/nvdimm: expand ars unit testing

Browse source 
Simulate platform-firmware-initiated and asynchronous scrub results.
This injects poison in the middle of all nfit_test pmem address ranges.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2016-02-20 15:12:47 -08:00
parent 87bf572e19
commit f471f1a7d0
1 changed files with 90 additions and 22 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

112
tools/testing/nvdimm/test/nfit.c
View file

@ -151,6 +151,11 @@ struct nfit_test {
int (*alloc)(struct nfit_test *t);
void (*setup)(struct nfit_test *t);
int setup_hotplug;
struct ars_state {
struct nd_cmd_ars_status *ars_status;
unsigned long deadline;
spinlock_t lock;
} ars_state;
};
static struct nfit_test *to_nfit_test(struct device *dev)
@ -232,30 +237,72 @@ static int nfit_test_cmd_ars_cap(struct nd_cmd_ars_cap *nd_cmd,
return 0;
}
static int nfit_test_cmd_ars_start(struct nd_cmd_ars_start *nd_cmd,
unsigned int buf_len)
/*
* Initialize the ars_state to return an ars_result 1 second in the future with
* a 4K error range in the middle of the requested address range.
*/
static void post_ars_status(struct ars_state *ars_state, u64 addr, u64 len)
{
if (buf_len < sizeof(*nd_cmd))
struct nd_cmd_ars_status *ars_status;
struct nd_ars_record *ars_record;
ars_state->deadline = jiffies + 1*HZ;
ars_status = ars_state->ars_status;
ars_status->status = 0;
ars_status->out_length = sizeof(struct nd_cmd_ars_status)
+ sizeof(struct nd_ars_record);
ars_status->address = addr;
ars_status->length = len;
ars_status->type = ND_ARS_PERSISTENT;
ars_status->num_records = 1;
ars_record = &ars_status->records[0];
ars_record->handle = 0;
ars_record->err_address = addr + len / 2;
ars_record->length = SZ_4K;
}
static int nfit_test_cmd_ars_start(struct ars_state *ars_state,
struct nd_cmd_ars_start *ars_start, unsigned int buf_len,
int *cmd_rc)
{
if (buf_len < sizeof(*ars_start))
return -EINVAL;
nd_cmd->status = 0;
spin_lock(&ars_state->lock);
if (time_before(jiffies, ars_state->deadline)) {
ars_start->status = NFIT_ARS_START_BUSY;
*cmd_rc = -EBUSY;
} else {
ars_start->status = 0;
ars_start->scrub_time = 1;
post_ars_status(ars_state, ars_start->address,
ars_start->length);
*cmd_rc = 0;
}
spin_unlock(&ars_state->lock);
return 0;
}
static int nfit_test_cmd_ars_status(struct nd_cmd_ars_status *nd_cmd,
unsigned int buf_len)
static int nfit_test_cmd_ars_status(struct ars_state *ars_state,
struct nd_cmd_ars_status *ars_status, unsigned int buf_len,
int *cmd_rc)
{
if (buf_len < sizeof(*nd_cmd))
if (buf_len < ars_state->ars_status->out_length)
return -EINVAL;
nd_cmd->out_length = sizeof(struct nd_cmd_ars_status);
/* TODO: emit error records */
nd_cmd->num_records = 0;
nd_cmd->address = 0;
nd_cmd->length = -1ULL;
nd_cmd->status = 0;
spin_lock(&ars_state->lock);
if (time_before(jiffies, ars_state->deadline)) {
memset(ars_status, 0, buf_len);
ars_status->status = NFIT_ARS_STATUS_BUSY;
ars_status->out_length = sizeof(*ars_status);
*cmd_rc = -EBUSY;
} else {
memcpy(ars_status, ars_state->ars_status,
ars_state->ars_status->out_length);
*cmd_rc = 0;
}
spin_unlock(&ars_state->lock);
return 0;
}
@ -265,7 +312,11 @@ static int nfit_test_ctl(struct nvdimm_bus_descriptor *nd_desc,
{
struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
struct nfit_test *t = container_of(acpi_desc, typeof(*t), acpi_desc);
int i, rc = 0;
int i, rc = 0, __cmd_rc;
if (!cmd_rc)
cmd_rc = &__cmd_rc;
*cmd_rc = 0;
if (nvdimm) {
struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
@ -297,6 +348,8 @@ static int nfit_test_ctl(struct nvdimm_bus_descriptor *nd_desc,
return -ENOTTY;
}
} else {
struct ars_state *ars_state = &t->ars_state;
if (!nd_desc || !test_bit(cmd, &nd_desc->dsm_mask))
return -ENOTTY;
@ -305,19 +358,18 @@ static int nfit_test_ctl(struct nvdimm_bus_descriptor *nd_desc,
rc = nfit_test_cmd_ars_cap(buf, buf_len);
break;
case ND_CMD_ARS_START:
rc = nfit_test_cmd_ars_start(buf, buf_len);
rc = nfit_test_cmd_ars_start(ars_state, buf, buf_len,
cmd_rc);
break;
case ND_CMD_ARS_STATUS:
rc = nfit_test_cmd_ars_status(buf, buf_len);
rc = nfit_test_cmd_ars_status(ars_state, buf, buf_len,
cmd_rc);
break;
default:
return -ENOTTY;
}
}
/* TODO: error status tests */
if (cmd_rc)
*cmd_rc = 0;
return rc;
}
@ -427,6 +479,18 @@ static struct nfit_test_resource *nfit_test_lookup(resource_size_t addr)
return NULL;
}
static int ars_state_init(struct device *dev, struct ars_state *ars_state)
{
ars_state->ars_status = devm_kzalloc(dev,
sizeof(struct nd_cmd_ars_status)
+ sizeof(struct nd_ars_record) * NFIT_TEST_ARS_RECORDS,
GFP_KERNEL);
if (!ars_state->ars_status)
return -ENOMEM;
spin_lock_init(&ars_state->lock);
return 0;
}
static int nfit_test0_alloc(struct nfit_test *t)
{
size_t nfit_size = sizeof(struct acpi_nfit_system_address) * NUM_SPA
@ -476,7 +540,7 @@ static int nfit_test0_alloc(struct nfit_test *t)
return -ENOMEM;
}
return 0;
return ars_state_init(&t->pdev.dev, &t->ars_state);
}
static int nfit_test1_alloc(struct nfit_test *t)
@ -494,7 +558,7 @@ static int nfit_test1_alloc(struct nfit_test *t)
if (!t->spa_set[0])
return -ENOMEM;
return 0;
return ars_state_init(&t->pdev.dev, &t->ars_state);
}
static void nfit_test0_setup(struct nfit_test *t)
@ -1157,6 +1221,8 @@ static void nfit_test0_setup(struct nfit_test *t)
flush->hint_address[0] = t->flush_dma[4];
}
post_ars_status(&t->ars_state, t->spa_set_dma[0], SPA0_SIZE);
acpi_desc = &t->acpi_desc;
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);
@ -1218,6 +1284,8 @@ static void nfit_test1_setup(struct nfit_test *t)
dcr->code = NFIT_FIC_BYTE;
dcr->windows = 0;
post_ars_status(&t->ars_state, t->spa_set_dma[0], SPA2_SIZE);
acpi_desc = &t->acpi_desc;
set_bit(ND_CMD_ARS_CAP, &acpi_desc->bus_dsm_force_en);
set_bit(ND_CMD_ARS_START, &acpi_desc->bus_dsm_force_en);