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libnvdimm, acpi, nfit: Add bus level dsm mask for pass thru. 

Add a bus level dsm_mask to nvdimm_bus_descriptor to allow the passthru
calling mechanism to specify a different mask from the cmd_mask.

Populate bus_dsm_mask and use it to filter dsm calls that user can
make through the pass thru interface.

Signed-off-by: Jerry Hoemann <jerry.hoemann@hpe.com>
[djbw: use command number constants instead of a magic mask value]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Jerry Hoemann 2017-06-30 20:53:24 -07:00 committed by Dan Williams
parent 37d74841b9
commit 7db5bb33ad
2 changed files with 28 additions and 0 deletions
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27
drivers/acpi/nfit/core.c
View File

@ -253,6 +253,8 @@ int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm,
cmd_name = nvdimm_bus_cmd_name(cmd);
cmd_mask = nd_desc->cmd_mask;
dsm_mask = cmd_mask;
if (cmd == ND_CMD_CALL)
dsm_mask = nd_desc->bus_dsm_mask;
desc = nd_cmd_bus_desc(cmd);
guid = to_nfit_uuid(NFIT_DEV_BUS);
handle = adev->handle;
@ -1608,11 +1610,23 @@ static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc)
acpi_desc);
}
/*
* These constants are private because there are no kernel consumers of
* these commands.
*/
enum nfit_aux_cmds {
NFIT_CMD_TRANSLATE_SPA = 5,
NFIT_CMD_ARS_INJECT_SET = 7,
NFIT_CMD_ARS_INJECT_CLEAR = 8,
NFIT_CMD_ARS_INJECT_GET = 9,
};
static void acpi_nfit_init_dsms(struct acpi_nfit_desc *acpi_desc)
{
struct nvdimm_bus_descriptor *nd_desc = &acpi_desc->nd_desc;
const guid_t *guid = to_nfit_uuid(NFIT_DEV_BUS);
struct acpi_device *adev;
unsigned long dsm_mask;
int i;
nd_desc->cmd_mask = acpi_desc->bus_cmd_force_en;
@ -1624,6 +1638,19 @@ static void acpi_nfit_init_dsms(struct acpi_nfit_desc *acpi_desc)
if (acpi_check_dsm(adev->handle, guid, 1, 1ULL << i))
set_bit(i, &nd_desc->cmd_mask);
set_bit(ND_CMD_CALL, &nd_desc->cmd_mask);
dsm_mask =
(1 << ND_CMD_ARS_CAP) |
(1 << ND_CMD_ARS_START) |
(1 << ND_CMD_ARS_STATUS) |
(1 << ND_CMD_CLEAR_ERROR) |
(1 << NFIT_CMD_TRANSLATE_SPA) |
(1 << NFIT_CMD_ARS_INJECT_SET) |
(1 << NFIT_CMD_ARS_INJECT_CLEAR) |
(1 << NFIT_CMD_ARS_INJECT_GET);
for_each_set_bit(i, &dsm_mask, BITS_PER_LONG)
if (acpi_check_dsm(adev->handle, guid, 1, 1ULL << i))
set_bit(i, &nd_desc->bus_dsm_mask);
}
static ssize_t range_index_show(struct device *dev,

1
include/linux/libnvdimm.h
View File

@ -55,6 +55,7 @@ typedef int (*ndctl_fn)(struct nvdimm_bus_descriptor *nd_desc,
struct nvdimm_bus_descriptor {
const struct attribute_group **attr_groups;
unsigned long bus_dsm_mask;
unsigned long cmd_mask;
struct module *module;
char *provider_name;