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authorLinus Torvalds <torvalds@linux-foundation.org>2020-08-11 20:59:19 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-08-11 20:59:19 +0300
commit4bf5e3611895ede257d736b7359db669879a109f (patch)
tree4b7c5c5e05390fbd42be18dfd6f3ecbed37a77f9 /drivers/acpi/nfit
parent00e4db51259a5f936fec1424b884f029479d3981 (diff)
parent7f674025d9f7321dea11b802cc0ab3f09cbe51c5 (diff)
downloadlinux-4bf5e3611895ede257d736b7359db669879a109f.tar.xz
Merge tag 'libnvdimm-for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updayes from Vishal Verma: "You'd normally receive this pull request from Dan Williams, but he's busy watching a newborn (Congrats Dan!), so I'm watching libnvdimm this cycle. This adds a new feature in libnvdimm - 'Runtime Firmware Activation', and a few small cleanups and fixes in libnvdimm and DAX. I'd originally intended to make separate topic-based pull requests - one for libnvdimm, and one for DAX, but some of the DAX material fell out since it wasn't quite ready. Summary: - add 'Runtime Firmware Activation' support for NVDIMMs that advertise the relevant capability - misc libnvdimm and DAX cleanups" * tag 'libnvdimm-for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: libnvdimm/security: ensure sysfs poll thread woke up and fetch updated attr libnvdimm/security: the 'security' attr never show 'overwrite' state libnvdimm/security: fix a typo ACPI: NFIT: Fix ARS zero-sized allocation dax: Fix incorrect argument passed to xas_set_err() ACPI: NFIT: Add runtime firmware activate support PM, libnvdimm: Add runtime firmware activation support libnvdimm: Convert to DEVICE_ATTR_ADMIN_RO() drivers/dax: Expand lock scope to cover the use of addresses fs/dax: Remove unused size parameter dax: print error message by pr_info() in __generic_fsdax_supported() driver-core: Introduce DEVICE_ATTR_ADMIN_{RO,RW} tools/testing/nvdimm: Emulate firmware activation commands tools/testing/nvdimm: Prepare nfit_ctl_test() for ND_CMD_CALL emulation tools/testing/nvdimm: Add command debug messages tools/testing/nvdimm: Cleanup dimm index passing ACPI: NFIT: Define runtime firmware activation commands ACPI: NFIT: Move bus_dsm_mask out of generic nvdimm_bus_descriptor libnvdimm: Validate command family indices
Diffstat (limited to 'drivers/acpi/nfit')
-rw-r--r--drivers/acpi/nfit/core.c157
-rw-r--r--drivers/acpi/nfit/intel.c386
-rw-r--r--drivers/acpi/nfit/intel.h61
-rw-r--r--drivers/acpi/nfit/nfit.h38
4 files changed, 600 insertions, 42 deletions
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 7c138a4edc03..26dd208a0d63 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -73,6 +73,18 @@ const guid_t *to_nfit_uuid(enum nfit_uuids id)
}
EXPORT_SYMBOL(to_nfit_uuid);
+static const guid_t *to_nfit_bus_uuid(int family)
+{
+ if (WARN_ONCE(family == NVDIMM_BUS_FAMILY_NFIT,
+ "only secondary bus families can be translated\n"))
+ return NULL;
+ /*
+ * The index of bus UUIDs starts immediately following the last
+ * NVDIMM/leaf family.
+ */
+ return to_nfit_uuid(family + NVDIMM_FAMILY_MAX);
+}
+
static struct acpi_device *to_acpi_dev(struct acpi_nfit_desc *acpi_desc)
{
struct nvdimm_bus_descriptor *nd_desc = &acpi_desc->nd_desc;
@@ -362,24 +374,8 @@ static u8 nfit_dsm_revid(unsigned family, unsigned func)
{
static const u8 revid_table[NVDIMM_FAMILY_MAX+1][NVDIMM_CMD_MAX+1] = {
[NVDIMM_FAMILY_INTEL] = {
- [NVDIMM_INTEL_GET_MODES] = 2,
- [NVDIMM_INTEL_GET_FWINFO] = 2,
- [NVDIMM_INTEL_START_FWUPDATE] = 2,
- [NVDIMM_INTEL_SEND_FWUPDATE] = 2,
- [NVDIMM_INTEL_FINISH_FWUPDATE] = 2,
- [NVDIMM_INTEL_QUERY_FWUPDATE] = 2,
- [NVDIMM_INTEL_SET_THRESHOLD] = 2,
- [NVDIMM_INTEL_INJECT_ERROR] = 2,
- [NVDIMM_INTEL_GET_SECURITY_STATE] = 2,
- [NVDIMM_INTEL_SET_PASSPHRASE] = 2,
- [NVDIMM_INTEL_DISABLE_PASSPHRASE] = 2,
- [NVDIMM_INTEL_UNLOCK_UNIT] = 2,
- [NVDIMM_INTEL_FREEZE_LOCK] = 2,
- [NVDIMM_INTEL_SECURE_ERASE] = 2,
- [NVDIMM_INTEL_OVERWRITE] = 2,
- [NVDIMM_INTEL_QUERY_OVERWRITE] = 2,
- [NVDIMM_INTEL_SET_MASTER_PASSPHRASE] = 2,
- [NVDIMM_INTEL_MASTER_SECURE_ERASE] = 2,
+ [NVDIMM_INTEL_GET_MODES ...
+ NVDIMM_INTEL_FW_ACTIVATE_ARM] = 2,
},
};
u8 id;
@@ -406,7 +402,7 @@ static bool payload_dumpable(struct nvdimm *nvdimm, unsigned int func)
}
static int cmd_to_func(struct nfit_mem *nfit_mem, unsigned int cmd,
- struct nd_cmd_pkg *call_pkg)
+ struct nd_cmd_pkg *call_pkg, int *family)
{
if (call_pkg) {
int i;
@@ -417,6 +413,7 @@ static int cmd_to_func(struct nfit_mem *nfit_mem, unsigned int cmd,
for (i = 0; i < ARRAY_SIZE(call_pkg->nd_reserved2); i++)
if (call_pkg->nd_reserved2[i])
return -EINVAL;
+ *family = call_pkg->nd_family;
return call_pkg->nd_command;
}
@@ -450,13 +447,14 @@ int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm,
acpi_handle handle;
const guid_t *guid;
int func, rc, i;
+ int family = 0;
if (cmd_rc)
*cmd_rc = -EINVAL;
if (cmd == ND_CMD_CALL)
call_pkg = buf;
- func = cmd_to_func(nfit_mem, cmd, call_pkg);
+ func = cmd_to_func(nfit_mem, cmd, call_pkg, &family);
if (func < 0)
return func;
@@ -478,9 +476,17 @@ 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 = nd_desc->bus_dsm_mask;
+ if (cmd == ND_CMD_CALL && call_pkg->nd_family) {
+ family = call_pkg->nd_family;
+ if (!test_bit(family, &nd_desc->bus_family_mask))
+ return -EINVAL;
+ dsm_mask = acpi_desc->family_dsm_mask[family];
+ guid = to_nfit_bus_uuid(family);
+ } else {
+ dsm_mask = acpi_desc->bus_dsm_mask;
+ guid = to_nfit_uuid(NFIT_DEV_BUS);
+ }
desc = nd_cmd_bus_desc(cmd);
- guid = to_nfit_uuid(NFIT_DEV_BUS);
handle = adev->handle;
dimm_name = "bus";
}
@@ -516,8 +522,8 @@ int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm,
in_buf.buffer.length = call_pkg->nd_size_in;
}
- dev_dbg(dev, "%s cmd: %d: func: %d input length: %d\n",
- dimm_name, cmd, func, in_buf.buffer.length);
+ dev_dbg(dev, "%s cmd: %d: family: %d func: %d input length: %d\n",
+ dimm_name, cmd, family, func, in_buf.buffer.length);
if (payload_dumpable(nvdimm, func))
print_hex_dump_debug("nvdimm in ", DUMP_PREFIX_OFFSET, 4, 4,
in_buf.buffer.pointer,
@@ -1238,8 +1244,9 @@ static ssize_t bus_dsm_mask_show(struct device *dev,
{
struct nvdimm_bus *nvdimm_bus = to_nvdimm_bus(dev);
struct nvdimm_bus_descriptor *nd_desc = to_nd_desc(nvdimm_bus);
+ struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
- return sprintf(buf, "%#lx\n", nd_desc->bus_dsm_mask);
+ return sprintf(buf, "%#lx\n", acpi_desc->bus_dsm_mask);
}
static struct device_attribute dev_attr_bus_dsm_mask =
__ATTR(dsm_mask, 0444, bus_dsm_mask_show, NULL);
@@ -1385,8 +1392,12 @@ static umode_t nfit_visible(struct kobject *kobj, struct attribute *a, int n)
struct device *dev = container_of(kobj, struct device, kobj);
struct nvdimm_bus *nvdimm_bus = to_nvdimm_bus(dev);
- if (a == &dev_attr_scrub.attr && !ars_supported(nvdimm_bus))
- return 0;
+ if (a == &dev_attr_scrub.attr)
+ return ars_supported(nvdimm_bus) ? a->mode : 0;
+
+ if (a == &dev_attr_firmware_activate_noidle.attr)
+ return intel_fwa_supported(nvdimm_bus) ? a->mode : 0;
+
return a->mode;
}
@@ -1395,6 +1406,7 @@ static struct attribute *acpi_nfit_attributes[] = {
&dev_attr_scrub.attr,
&dev_attr_hw_error_scrub.attr,
&dev_attr_bus_dsm_mask.attr,
+ &dev_attr_firmware_activate_noidle.attr,
NULL,
};
@@ -1823,6 +1835,7 @@ static void populate_shutdown_status(struct nfit_mem *nfit_mem)
static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc,
struct nfit_mem *nfit_mem, u32 device_handle)
{
+ struct nvdimm_bus_descriptor *nd_desc = &acpi_desc->nd_desc;
struct acpi_device *adev, *adev_dimm;
struct device *dev = acpi_desc->dev;
unsigned long dsm_mask, label_mask;
@@ -1834,6 +1847,7 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc,
/* nfit test assumes 1:1 relationship between commands and dsms */
nfit_mem->dsm_mask = acpi_desc->dimm_cmd_force_en;
nfit_mem->family = NVDIMM_FAMILY_INTEL;
+ set_bit(NVDIMM_FAMILY_INTEL, &nd_desc->dimm_family_mask);
if (dcr->valid_fields & ACPI_NFIT_CONTROL_MFG_INFO_VALID)
sprintf(nfit_mem->id, "%04x-%02x-%04x-%08x",
@@ -1886,10 +1900,13 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc,
* Note, that checking for function0 (bit0) tells us if any commands
* are reachable through this GUID.
*/
+ clear_bit(NVDIMM_FAMILY_INTEL, &nd_desc->dimm_family_mask);
for (i = 0; i <= NVDIMM_FAMILY_MAX; i++)
- if (acpi_check_dsm(adev_dimm->handle, to_nfit_uuid(i), 1, 1))
+ if (acpi_check_dsm(adev_dimm->handle, to_nfit_uuid(i), 1, 1)) {
+ set_bit(i, &nd_desc->dimm_family_mask);
if (family < 0 || i == default_dsm_family)
family = i;
+ }
/* limit the supported commands to those that are publicly documented */
nfit_mem->family = family;
@@ -2007,6 +2024,26 @@ static const struct nvdimm_security_ops *acpi_nfit_get_security_ops(int family)
}
}
+static const struct nvdimm_fw_ops *acpi_nfit_get_fw_ops(
+ struct nfit_mem *nfit_mem)
+{
+ unsigned long mask;
+ struct acpi_nfit_desc *acpi_desc = nfit_mem->acpi_desc;
+ struct nvdimm_bus_descriptor *nd_desc = &acpi_desc->nd_desc;
+
+ if (!nd_desc->fw_ops)
+ return NULL;
+
+ if (nfit_mem->family != NVDIMM_FAMILY_INTEL)
+ return NULL;
+
+ mask = nfit_mem->dsm_mask & NVDIMM_INTEL_FW_ACTIVATE_CMDMASK;
+ if (mask != NVDIMM_INTEL_FW_ACTIVATE_CMDMASK)
+ return NULL;
+
+ return intel_fw_ops;
+}
+
static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc)
{
struct nfit_mem *nfit_mem;
@@ -2083,7 +2120,8 @@ static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc)
acpi_nfit_dimm_attribute_groups,
flags, cmd_mask, flush ? flush->hint_count : 0,
nfit_mem->flush_wpq, &nfit_mem->id[0],
- acpi_nfit_get_security_ops(nfit_mem->family));
+ acpi_nfit_get_security_ops(nfit_mem->family),
+ acpi_nfit_get_fw_ops(nfit_mem));
if (!nvdimm)
return -ENOMEM;
@@ -2147,12 +2185,23 @@ 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);
+ unsigned long dsm_mask, *mask;
struct acpi_device *adev;
- unsigned long dsm_mask;
int i;
- nd_desc->cmd_mask = acpi_desc->bus_cmd_force_en;
- nd_desc->bus_dsm_mask = acpi_desc->bus_nfit_cmd_force_en;
+ set_bit(ND_CMD_CALL, &nd_desc->cmd_mask);
+ set_bit(NVDIMM_BUS_FAMILY_NFIT, &nd_desc->bus_family_mask);
+
+ /* enable nfit_test to inject bus command emulation */
+ if (acpi_desc->bus_cmd_force_en) {
+ nd_desc->cmd_mask = acpi_desc->bus_cmd_force_en;
+ mask = &nd_desc->bus_family_mask;
+ if (acpi_desc->family_dsm_mask[NVDIMM_BUS_FAMILY_INTEL]) {
+ set_bit(NVDIMM_BUS_FAMILY_INTEL, mask);
+ nd_desc->fw_ops = intel_bus_fw_ops;
+ }
+ }
+
adev = to_acpi_dev(acpi_desc);
if (!adev)
return;
@@ -2160,7 +2209,6 @@ static void acpi_nfit_init_dsms(struct acpi_nfit_desc *acpi_desc)
for (i = ND_CMD_ARS_CAP; i <= ND_CMD_CLEAR_ERROR; i++)
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) |
@@ -2173,7 +2221,20 @@ static void acpi_nfit_init_dsms(struct acpi_nfit_desc *acpi_desc)
(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);
+ set_bit(i, &acpi_desc->bus_dsm_mask);
+
+ /* Enumerate allowed NVDIMM_BUS_FAMILY_INTEL commands */
+ dsm_mask = NVDIMM_BUS_INTEL_FW_ACTIVATE_CMDMASK;
+ guid = to_nfit_bus_uuid(NVDIMM_BUS_FAMILY_INTEL);
+ mask = &acpi_desc->family_dsm_mask[NVDIMM_BUS_FAMILY_INTEL];
+ for_each_set_bit(i, &dsm_mask, BITS_PER_LONG)
+ if (acpi_check_dsm(adev->handle, guid, 1, 1ULL << i))
+ set_bit(i, mask);
+
+ if (*mask == dsm_mask) {
+ set_bit(NVDIMM_BUS_FAMILY_INTEL, &nd_desc->bus_family_mask);
+ nd_desc->fw_ops = intel_bus_fw_ops;
+ }
}
static ssize_t range_index_show(struct device *dev,
@@ -3273,7 +3334,7 @@ static void acpi_nfit_init_ars(struct acpi_nfit_desc *acpi_desc,
static int acpi_nfit_register_regions(struct acpi_nfit_desc *acpi_desc)
{
struct nfit_spa *nfit_spa;
- int rc;
+ int rc, do_sched_ars = 0;
set_bit(ARS_VALID, &acpi_desc->scrub_flags);
list_for_each_entry(nfit_spa, &acpi_desc->spas, list) {
@@ -3285,7 +3346,7 @@ static int acpi_nfit_register_regions(struct acpi_nfit_desc *acpi_desc)
}
}
- list_for_each_entry(nfit_spa, &acpi_desc->spas, list)
+ list_for_each_entry(nfit_spa, &acpi_desc->spas, list) {
switch (nfit_spa_type(nfit_spa->spa)) {
case NFIT_SPA_VOLATILE:
case NFIT_SPA_PM:
@@ -3293,6 +3354,13 @@ static int acpi_nfit_register_regions(struct acpi_nfit_desc *acpi_desc)
rc = ars_register(acpi_desc, nfit_spa);
if (rc)
return rc;
+
+ /*
+ * Kick off background ARS if at least one
+ * region successfully registered ARS
+ */
+ if (!test_bit(ARS_FAILED, &nfit_spa->ars_state))
+ do_sched_ars++;
break;
case NFIT_SPA_BDW:
/* nothing to register */
@@ -3311,8 +3379,10 @@ static int acpi_nfit_register_regions(struct acpi_nfit_desc *acpi_desc)
/* don't register unknown regions */
break;
}
+ }
- sched_ars(acpi_desc);
+ if (do_sched_ars)
+ sched_ars(acpi_desc);
return 0;
}
@@ -3485,7 +3555,10 @@ static int __acpi_nfit_clear_to_send(struct nvdimm_bus_descriptor *nd_desc,
return 0;
}
-/* prevent security commands from being issued via ioctl */
+/*
+ * Prevent security and firmware activate commands from being issued via
+ * ioctl.
+ */
static int acpi_nfit_clear_to_send(struct nvdimm_bus_descriptor *nd_desc,
struct nvdimm *nvdimm, unsigned int cmd, void *buf)
{
@@ -3496,10 +3569,15 @@ static int acpi_nfit_clear_to_send(struct nvdimm_bus_descriptor *nd_desc,
call_pkg->nd_family == NVDIMM_FAMILY_INTEL) {
func = call_pkg->nd_command;
if (func > NVDIMM_CMD_MAX ||
- (1 << func) & NVDIMM_INTEL_SECURITY_CMDMASK)
+ (1 << func) & NVDIMM_INTEL_DENY_CMDMASK)
return -EOPNOTSUPP;
}
+ /* block all non-nfit bus commands */
+ if (!nvdimm && cmd == ND_CMD_CALL &&
+ call_pkg->nd_family != NVDIMM_BUS_FAMILY_NFIT)
+ return -EOPNOTSUPP;
+
return __acpi_nfit_clear_to_send(nd_desc, nvdimm, cmd);
}
@@ -3791,6 +3869,7 @@ static __init int nfit_init(void)
guid_parse(UUID_NFIT_DIMM_N_HPE2, &nfit_uuid[NFIT_DEV_DIMM_N_HPE2]);
guid_parse(UUID_NFIT_DIMM_N_MSFT, &nfit_uuid[NFIT_DEV_DIMM_N_MSFT]);
guid_parse(UUID_NFIT_DIMM_N_HYPERV, &nfit_uuid[NFIT_DEV_DIMM_N_HYPERV]);
+ guid_parse(UUID_INTEL_BUS, &nfit_uuid[NFIT_BUS_INTEL]);
nfit_wq = create_singlethread_workqueue("nfit");
if (!nfit_wq)
diff --git a/drivers/acpi/nfit/intel.c b/drivers/acpi/nfit/intel.c
index 1113b679cd7b..8dd792a55730 100644
--- a/drivers/acpi/nfit/intel.c
+++ b/drivers/acpi/nfit/intel.c
@@ -7,6 +7,48 @@
#include "intel.h"
#include "nfit.h"
+static ssize_t firmware_activate_noidle_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct nvdimm_bus *nvdimm_bus = to_nvdimm_bus(dev);
+ struct nvdimm_bus_descriptor *nd_desc = to_nd_desc(nvdimm_bus);
+ struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
+
+ return sprintf(buf, "%s\n", acpi_desc->fwa_noidle ? "Y" : "N");
+}
+
+static ssize_t firmware_activate_noidle_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct nvdimm_bus *nvdimm_bus = to_nvdimm_bus(dev);
+ struct nvdimm_bus_descriptor *nd_desc = to_nd_desc(nvdimm_bus);
+ struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
+ ssize_t rc;
+ bool val;
+
+ rc = kstrtobool(buf, &val);
+ if (rc)
+ return rc;
+ if (val != acpi_desc->fwa_noidle)
+ acpi_desc->fwa_cap = NVDIMM_FWA_CAP_INVALID;
+ acpi_desc->fwa_noidle = val;
+ return size;
+}
+DEVICE_ATTR_RW(firmware_activate_noidle);
+
+bool intel_fwa_supported(struct nvdimm_bus *nvdimm_bus)
+{
+ struct nvdimm_bus_descriptor *nd_desc = to_nd_desc(nvdimm_bus);
+ struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
+ unsigned long *mask;
+
+ if (!test_bit(NVDIMM_BUS_FAMILY_INTEL, &nd_desc->bus_family_mask))
+ return false;
+
+ mask = &acpi_desc->family_dsm_mask[NVDIMM_BUS_FAMILY_INTEL];
+ return *mask == NVDIMM_BUS_INTEL_FW_ACTIVATE_CMDMASK;
+}
+
static unsigned long intel_security_flags(struct nvdimm *nvdimm,
enum nvdimm_passphrase_type ptype)
{
@@ -389,3 +431,347 @@ static const struct nvdimm_security_ops __intel_security_ops = {
};
const struct nvdimm_security_ops *intel_security_ops = &__intel_security_ops;
+
+static int intel_bus_fwa_businfo(struct nvdimm_bus_descriptor *nd_desc,
+ struct nd_intel_bus_fw_activate_businfo *info)
+{
+ struct {
+ struct nd_cmd_pkg pkg;
+ struct nd_intel_bus_fw_activate_businfo cmd;
+ } nd_cmd = {
+ .pkg = {
+ .nd_command = NVDIMM_BUS_INTEL_FW_ACTIVATE_BUSINFO,
+ .nd_family = NVDIMM_BUS_FAMILY_INTEL,
+ .nd_size_out =
+ sizeof(struct nd_intel_bus_fw_activate_businfo),
+ .nd_fw_size =
+ sizeof(struct nd_intel_bus_fw_activate_businfo),
+ },
+ };
+ int rc;
+
+ rc = nd_desc->ndctl(nd_desc, NULL, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd),
+ NULL);
+ *info = nd_cmd.cmd;
+ return rc;
+}
+
+/* The fw_ops expect to be called with the nvdimm_bus_lock() held */
+static enum nvdimm_fwa_state intel_bus_fwa_state(
+ struct nvdimm_bus_descriptor *nd_desc)
+{
+ struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
+ struct nd_intel_bus_fw_activate_businfo info;
+ struct device *dev = acpi_desc->dev;
+ enum nvdimm_fwa_state state;
+ int rc;
+
+ /*
+ * It should not be possible for platform firmware to return
+ * busy because activate is a synchronous operation. Treat it
+ * similar to invalid, i.e. always refresh / poll the status.
+ */
+ switch (acpi_desc->fwa_state) {
+ case NVDIMM_FWA_INVALID:
+ case NVDIMM_FWA_BUSY:
+ break;
+ default:
+ /* check if capability needs to be refreshed */
+ if (acpi_desc->fwa_cap == NVDIMM_FWA_CAP_INVALID)
+ break;
+ return acpi_desc->fwa_state;
+ }
+
+ /* Refresh with platform firmware */
+ rc = intel_bus_fwa_businfo(nd_desc, &info);
+ if (rc)
+ return NVDIMM_FWA_INVALID;
+
+ switch (info.state) {
+ case ND_INTEL_FWA_IDLE:
+ state = NVDIMM_FWA_IDLE;
+ break;
+ case ND_INTEL_FWA_BUSY:
+ state = NVDIMM_FWA_BUSY;
+ break;
+ case ND_INTEL_FWA_ARMED:
+ if (info.activate_tmo > info.max_quiesce_tmo)
+ state = NVDIMM_FWA_ARM_OVERFLOW;
+ else
+ state = NVDIMM_FWA_ARMED;
+ break;
+ default:
+ dev_err_once(dev, "invalid firmware activate state %d\n",
+ info.state);
+ return NVDIMM_FWA_INVALID;
+ }
+
+ /*
+ * Capability data is available in the same payload as state. It
+ * is expected to be static.
+ */
+ if (acpi_desc->fwa_cap == NVDIMM_FWA_CAP_INVALID) {
+ if (info.capability & ND_INTEL_BUS_FWA_CAP_FWQUIESCE)
+ acpi_desc->fwa_cap = NVDIMM_FWA_CAP_QUIESCE;
+ else if (info.capability & ND_INTEL_BUS_FWA_CAP_OSQUIESCE) {
+ /*
+ * Skip hibernate cycle by default if platform
+ * indicates that it does not need devices to be
+ * quiesced.
+ */
+ acpi_desc->fwa_cap = NVDIMM_FWA_CAP_LIVE;
+ } else
+ acpi_desc->fwa_cap = NVDIMM_FWA_CAP_NONE;
+ }
+
+ acpi_desc->fwa_state = state;
+
+ return state;
+}
+
+static enum nvdimm_fwa_capability intel_bus_fwa_capability(
+ struct nvdimm_bus_descriptor *nd_desc)
+{
+ struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
+
+ if (acpi_desc->fwa_cap > NVDIMM_FWA_CAP_INVALID)
+ return acpi_desc->fwa_cap;
+
+ if (intel_bus_fwa_state(nd_desc) > NVDIMM_FWA_INVALID)
+ return acpi_desc->fwa_cap;
+
+ return NVDIMM_FWA_CAP_INVALID;
+}
+
+static int intel_bus_fwa_activate(struct nvdimm_bus_descriptor *nd_desc)
+{
+ struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
+ struct {
+ struct nd_cmd_pkg pkg;
+ struct nd_intel_bus_fw_activate cmd;
+ } nd_cmd = {
+ .pkg = {
+ .nd_command = NVDIMM_BUS_INTEL_FW_ACTIVATE,
+ .nd_family = NVDIMM_BUS_FAMILY_INTEL,
+ .nd_size_in = sizeof(nd_cmd.cmd.iodev_state),
+ .nd_size_out =
+ sizeof(struct nd_intel_bus_fw_activate),
+ .nd_fw_size =
+ sizeof(struct nd_intel_bus_fw_activate),
+ },
+ /*
+ * Even though activate is run from a suspended context,
+ * for safety, still ask platform firmware to force
+ * quiesce devices by default. Let a module
+ * parameter override that policy.
+ */
+ .cmd = {
+ .iodev_state = acpi_desc->fwa_noidle
+ ? ND_INTEL_BUS_FWA_IODEV_OS_IDLE
+ : ND_INTEL_BUS_FWA_IODEV_FORCE_IDLE,
+ },
+ };
+ int rc;
+
+ switch (intel_bus_fwa_state(nd_desc)) {
+ case NVDIMM_FWA_ARMED:
+ case NVDIMM_FWA_ARM_OVERFLOW:
+ break;
+ default:
+ return -ENXIO;
+ }
+
+ rc = nd_desc->ndctl(nd_desc, NULL, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd),
+ NULL);
+
+ /*
+ * Whether the command succeeded, or failed, the agent checking
+ * for the result needs to query the DIMMs individually.
+ * Increment the activation count to invalidate all the DIMM
+ * states at once (it's otherwise not possible to take
+ * acpi_desc->init_mutex in this context)
+ */
+ acpi_desc->fwa_state = NVDIMM_FWA_INVALID;
+ acpi_desc->fwa_count++;
+
+ dev_dbg(acpi_desc->dev, "result: %d\n", rc);
+
+ return rc;
+}
+
+static const struct nvdimm_bus_fw_ops __intel_bus_fw_ops = {
+ .activate_state = intel_bus_fwa_state,
+ .capability = intel_bus_fwa_capability,
+ .activate = intel_bus_fwa_activate,
+};
+
+const struct nvdimm_bus_fw_ops *intel_bus_fw_ops = &__intel_bus_fw_ops;
+
+static int intel_fwa_dimminfo(struct nvdimm *nvdimm,
+ struct nd_intel_fw_activate_dimminfo *info)
+{
+ struct {
+ struct nd_cmd_pkg pkg;
+ struct nd_intel_fw_activate_dimminfo cmd;
+ } nd_cmd = {
+ .pkg = {
+ .nd_command = NVDIMM_INTEL_FW_ACTIVATE_DIMMINFO,
+ .nd_family = NVDIMM_FAMILY_INTEL,
+ .nd_size_out =
+ sizeof(struct nd_intel_fw_activate_dimminfo),
+ .nd_fw_size =
+ sizeof(struct nd_intel_fw_activate_dimminfo),
+ },
+ };
+ int rc;
+
+ rc = nvdimm_ctl(nvdimm, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd), NULL);
+ *info = nd_cmd.cmd;
+ return rc;
+}
+
+static enum nvdimm_fwa_state intel_fwa_state(struct nvdimm *nvdimm)
+{
+ struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
+ struct acpi_nfit_desc *acpi_desc = nfit_mem->acpi_desc;
+ struct nd_intel_fw_activate_dimminfo info;
+ int rc;
+
+ /*
+ * Similar to the bus state, since activate is synchronous the
+ * busy state should resolve within the context of 'activate'.
+ */
+ switch (nfit_mem->fwa_state) {
+ case NVDIMM_FWA_INVALID:
+ case NVDIMM_FWA_BUSY:
+ break;
+ default:
+ /* If no activations occurred the old state is still valid */
+ if (nfit_mem->fwa_count == acpi_desc->fwa_count)
+ return nfit_mem->fwa_state;
+ }
+
+ rc = intel_fwa_dimminfo(nvdimm, &info);
+ if (rc)
+ return NVDIMM_FWA_INVALID;
+
+ switch (info.state) {
+ case ND_INTEL_FWA_IDLE:
+ nfit_mem->fwa_state = NVDIMM_FWA_IDLE;
+ break;
+ case ND_INTEL_FWA_BUSY:
+ nfit_mem->fwa_state = NVDIMM_FWA_BUSY;
+ break;
+ case ND_INTEL_FWA_ARMED:
+ nfit_mem->fwa_state = NVDIMM_FWA_ARMED;
+ break;
+ default:
+ nfit_mem->fwa_state = NVDIMM_FWA_INVALID;
+ break;
+ }
+
+ switch (info.result) {
+ case ND_INTEL_DIMM_FWA_NONE:
+ nfit_mem->fwa_result = NVDIMM_FWA_RESULT_NONE;
+ break;
+ case ND_INTEL_DIMM_FWA_SUCCESS:
+ nfit_mem->fwa_result = NVDIMM_FWA_RESULT_SUCCESS;
+ break;
+ case ND_INTEL_DIMM_FWA_NOTSTAGED:
+ nfit_mem->fwa_result = NVDIMM_FWA_RESULT_NOTSTAGED;
+ break;
+ case ND_INTEL_DIMM_FWA_NEEDRESET:
+ nfit_mem->fwa_result = NVDIMM_FWA_RESULT_NEEDRESET;
+ break;
+ case ND_INTEL_DIMM_FWA_MEDIAFAILED:
+ case ND_INTEL_DIMM_FWA_ABORT:
+ case ND_INTEL_DIMM_FWA_NOTSUPP:
+ case ND_INTEL_DIMM_FWA_ERROR:
+ default:
+ nfit_mem->fwa_result = NVDIMM_FWA_RESULT_FAIL;
+ break;
+ }
+
+ nfit_mem->fwa_count = acpi_desc->fwa_count;
+
+ return nfit_mem->fwa_state;
+}
+
+static enum nvdimm_fwa_result intel_fwa_result(struct nvdimm *nvdimm)
+{
+ struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
+ struct acpi_nfit_desc *acpi_desc = nfit_mem->acpi_desc;
+
+ if (nfit_mem->fwa_count == acpi_desc->fwa_count
+ && nfit_mem->fwa_result > NVDIMM_FWA_RESULT_INVALID)
+ return nfit_mem->fwa_result;
+
+ if (intel_fwa_state(nvdimm) > NVDIMM_FWA_INVALID)
+ return nfit_mem->fwa_result;
+
+ return NVDIMM_FWA_RESULT_INVALID;
+}
+
+static int intel_fwa_arm(struct nvdimm *nvdimm, enum nvdimm_fwa_trigger arm)
+{
+ struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
+ struct acpi_nfit_desc *acpi_desc = nfit_mem->acpi_desc;
+ struct {
+ struct nd_cmd_pkg pkg;
+ struct nd_intel_fw_activate_arm cmd;
+ } nd_cmd = {
+ .pkg = {
+ .nd_command = NVDIMM_INTEL_FW_ACTIVATE_ARM,
+ .nd_family = NVDIMM_FAMILY_INTEL,
+ .nd_size_in = sizeof(nd_cmd.cmd.activate_arm),
+ .nd_size_out =
+ sizeof(struct nd_intel_fw_activate_arm),
+ .nd_fw_size =
+ sizeof(struct nd_intel_fw_activate_arm),
+ },
+ .cmd = {
+ .activate_arm = arm == NVDIMM_FWA_ARM
+ ? ND_INTEL_DIMM_FWA_ARM
+ : ND_INTEL_DIMM_FWA_DISARM,
+ },
+ };
+ int rc;
+
+ switch (intel_fwa_state(nvdimm)) {
+ case NVDIMM_FWA_INVALID:
+ return -ENXIO;
+ case NVDIMM_FWA_BUSY:
+ return -EBUSY;
+ case NVDIMM_FWA_IDLE:
+ if (arm == NVDIMM_FWA_DISARM)
+ return 0;
+ break;
+ case NVDIMM_FWA_ARMED:
+ if (arm == NVDIMM_FWA_ARM)
+ return 0;
+ break;
+ default:
+ return -ENXIO;
+ }
+
+ /*
+ * Invalidate the bus-level state, now that we're committed to
+ * changing the 'arm' state.
+ */
+ acpi_desc->fwa_state = NVDIMM_FWA_INVALID;
+ nfit_mem->fwa_state = NVDIMM_FWA_INVALID;
+
+ rc = nvdimm_ctl(nvdimm, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd), NULL);
+
+ dev_dbg(acpi_desc->dev, "%s result: %d\n", arm == NVDIMM_FWA_ARM
+ ? "arm" : "disarm", rc);
+ return rc;
+}
+
+static const struct nvdimm_fw_ops __intel_fw_ops = {
+ .activate_state = intel_fwa_state,
+ .activate_result = intel_fwa_result,
+ .arm = intel_fwa_arm,
+};
+
+const struct nvdimm_fw_ops *intel_fw_ops = &__intel_fw_ops;
diff --git a/drivers/acpi/nfit/intel.h b/drivers/acpi/nfit/intel.h
index 0aca682ab9d7..b768234ccebc 100644
--- a/drivers/acpi/nfit/intel.h
+++ b/drivers/acpi/nfit/intel.h
@@ -111,4 +111,65 @@ struct nd_intel_master_secure_erase {
u8 passphrase[ND_INTEL_PASSPHRASE_SIZE];
u32 status;
} __packed;
+
+#define ND_INTEL_FWA_IDLE 0
+#define ND_INTEL_FWA_ARMED 1
+#define ND_INTEL_FWA_BUSY 2
+
+#define ND_INTEL_DIMM_FWA_NONE 0
+#define ND_INTEL_DIMM_FWA_NOTSTAGED 1
+#define ND_INTEL_DIMM_FWA_SUCCESS 2
+#define ND_INTEL_DIMM_FWA_NEEDRESET 3
+#define ND_INTEL_DIMM_FWA_MEDIAFAILED 4
+#define ND_INTEL_DIMM_FWA_ABORT 5
+#define ND_INTEL_DIMM_FWA_NOTSUPP 6
+#define ND_INTEL_DIMM_FWA_ERROR 7
+
+struct nd_intel_fw_activate_dimminfo {
+ u32 status;
+ u16 result;
+ u8 state;
+ u8 reserved[7];
+} __packed;
+
+#define ND_INTEL_DIMM_FWA_ARM 1
+#define ND_INTEL_DIMM_FWA_DISARM 0
+
+struct nd_intel_fw_activate_arm {
+ u8 activate_arm;
+ u32 status;
+} __packed;
+
+/* Root device command payloads */
+#define ND_INTEL_BUS_FWA_CAP_FWQUIESCE (1 << 0)
+#define ND_INTEL_BUS_FWA_CAP_OSQUIESCE (1 << 1)
+#define ND_INTEL_BUS_FWA_CAP_RESET (1 << 2)
+
+struct nd_intel_bus_fw_activate_businfo {
+ u32 status;
+ u16 reserved;
+ u8 state;
+ u8 capability;
+ u64 activate_tmo;
+ u64 cpu_quiesce_tmo;
+ u64 io_quiesce_tmo;
+ u64 max_quiesce_tmo;
+} __packed;
+
+#define ND_INTEL_BUS_FWA_STATUS_NOARM (6 | 1 << 16)
+#define ND_INTEL_BUS_FWA_STATUS_BUSY (6 | 2 << 16)
+#define ND_INTEL_BUS_FWA_STATUS_NOFW (6 | 3 << 16)
+#define ND_INTEL_BUS_FWA_STATUS_TMO (6 | 4 << 16)
+#define ND_INTEL_BUS_FWA_STATUS_NOIDLE (6 | 5 << 16)
+#define ND_INTEL_BUS_FWA_STATUS_ABORT (6 | 6 << 16)
+
+#define ND_INTEL_BUS_FWA_IODEV_FORCE_IDLE (0)
+#define ND_INTEL_BUS_FWA_IODEV_OS_IDLE (1)
+struct nd_intel_bus_fw_activate {
+ u8 iodev_state;
+ u32 status;
+} __packed;
+
+extern const struct nvdimm_fw_ops *intel_fw_ops;
+extern const struct nvdimm_bus_fw_ops *intel_bus_fw_ops;
#endif
diff --git a/drivers/acpi/nfit/nfit.h b/drivers/acpi/nfit/nfit.h
index a303f0123394..c674f3df9be7 100644
--- a/drivers/acpi/nfit/nfit.h
+++ b/drivers/acpi/nfit/nfit.h
@@ -18,6 +18,7 @@
/* https://pmem.io/documents/NVDIMM_DSM_Interface-V1.6.pdf */
#define UUID_NFIT_DIMM "4309ac30-0d11-11e4-9191-0800200c9a66"
+#define UUID_INTEL_BUS "c7d8acd4-2df8-4b82-9f65-a325335af149"
/* https://github.com/HewlettPackard/hpe-nvm/blob/master/Documentation/ */
#define UUID_NFIT_DIMM_N_HPE1 "9002c334-acf3-4c0e-9642-a235f0d53bc6"
@@ -33,7 +34,6 @@
| ACPI_NFIT_MEM_RESTORE_FAILED | ACPI_NFIT_MEM_FLUSH_FAILED \
| ACPI_NFIT_MEM_NOT_ARMED | ACPI_NFIT_MEM_MAP_FAILED)
-#define NVDIMM_FAMILY_MAX NVDIMM_FAMILY_HYPERV
#define NVDIMM_CMD_MAX 31
#define NVDIMM_STANDARD_CMDMASK \
@@ -66,6 +66,13 @@ enum nvdimm_family_cmds {
NVDIMM_INTEL_QUERY_OVERWRITE = 26,
NVDIMM_INTEL_SET_MASTER_PASSPHRASE = 27,
NVDIMM_INTEL_MASTER_SECURE_ERASE = 28,
+ NVDIMM_INTEL_FW_ACTIVATE_DIMMINFO = 29,
+ NVDIMM_INTEL_FW_ACTIVATE_ARM = 30,
+};
+
+enum nvdimm_bus_family_cmds {
+ NVDIMM_BUS_INTEL_FW_ACTIVATE_BUSINFO = 1,
+ NVDIMM_BUS_INTEL_FW_ACTIVATE = 2,
};
#define NVDIMM_INTEL_SECURITY_CMDMASK \
@@ -76,13 +83,22 @@ enum nvdimm_family_cmds {
| 1 << NVDIMM_INTEL_SET_MASTER_PASSPHRASE \
| 1 << NVDIMM_INTEL_MASTER_SECURE_ERASE)
+#define NVDIMM_INTEL_FW_ACTIVATE_CMDMASK \
+(1 << NVDIMM_INTEL_FW_ACTIVATE_DIMMINFO | 1 << NVDIMM_INTEL_FW_ACTIVATE_ARM)
+
+#define NVDIMM_BUS_INTEL_FW_ACTIVATE_CMDMASK \
+(1 << NVDIMM_BUS_INTEL_FW_ACTIVATE_BUSINFO | 1 << NVDIMM_BUS_INTEL_FW_ACTIVATE)
+
#define NVDIMM_INTEL_CMDMASK \
(NVDIMM_STANDARD_CMDMASK | 1 << NVDIMM_INTEL_GET_MODES \
| 1 << NVDIMM_INTEL_GET_FWINFO | 1 << NVDIMM_INTEL_START_FWUPDATE \
| 1 << NVDIMM_INTEL_SEND_FWUPDATE | 1 << NVDIMM_INTEL_FINISH_FWUPDATE \
| 1 << NVDIMM_INTEL_QUERY_FWUPDATE | 1 << NVDIMM_INTEL_SET_THRESHOLD \
| 1 << NVDIMM_INTEL_INJECT_ERROR | 1 << NVDIMM_INTEL_LATCH_SHUTDOWN \
- | NVDIMM_INTEL_SECURITY_CMDMASK)
+ | NVDIMM_INTEL_SECURITY_CMDMASK | NVDIMM_INTEL_FW_ACTIVATE_CMDMASK)
+
+#define NVDIMM_INTEL_DENY_CMDMASK \
+(NVDIMM_INTEL_SECURITY_CMDMASK | NVDIMM_INTEL_FW_ACTIVATE_CMDMASK)
enum nfit_uuids {
/* for simplicity alias the uuid index with the family id */
@@ -91,6 +107,11 @@ enum nfit_uuids {
NFIT_DEV_DIMM_N_HPE2 = NVDIMM_FAMILY_HPE2,
NFIT_DEV_DIMM_N_MSFT = NVDIMM_FAMILY_MSFT,
NFIT_DEV_DIMM_N_HYPERV = NVDIMM_FAMILY_HYPERV,
+ /*
+ * to_nfit_bus_uuid() expects to translate bus uuid family ids
+ * to a UUID index using NVDIMM_FAMILY_MAX as an offset
+ */
+ NFIT_BUS_INTEL = NVDIMM_FAMILY_MAX + NVDIMM_BUS_FAMILY_INTEL,
NFIT_SPA_VOLATILE,
NFIT_SPA_PM,
NFIT_SPA_DCR,
@@ -199,6 +220,9 @@ struct nfit_mem {
struct list_head list;
struct acpi_device *adev;
struct acpi_nfit_desc *acpi_desc;
+ enum nvdimm_fwa_state fwa_state;
+ enum nvdimm_fwa_result fwa_result;
+ int fwa_count;
char id[NFIT_DIMM_ID_LEN+1];
struct resource *flush_wpq;
unsigned long dsm_mask;
@@ -238,11 +262,17 @@ struct acpi_nfit_desc {
unsigned long scrub_flags;
unsigned long dimm_cmd_force_en;
unsigned long bus_cmd_force_en;
- unsigned long bus_nfit_cmd_force_en;
+ unsigned long bus_dsm_mask;
+ unsigned long family_dsm_mask[NVDIMM_BUS_FAMILY_MAX + 1];
unsigned int platform_cap;
unsigned int scrub_tmo;
int (*blk_do_io)(struct nd_blk_region *ndbr, resource_size_t dpa,
void *iobuf, u64 len, int rw);
+ enum nvdimm_fwa_state fwa_state;
+ enum nvdimm_fwa_capability fwa_cap;
+ int fwa_count;
+ bool fwa_noidle;
+ bool fwa_nosuspend;
};
enum scrub_mode {
@@ -345,4 +375,6 @@ void __acpi_nvdimm_notify(struct device *dev, u32 event);
int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm,
unsigned int cmd, void *buf, unsigned int buf_len, int *cmd_rc);
void acpi_nfit_desc_init(struct acpi_nfit_desc *acpi_desc, struct device *dev);
+bool intel_fwa_supported(struct nvdimm_bus *nvdimm_bus);
+extern struct device_attribute dev_attr_firmware_activate_noidle;
#endif /* __NFIT_H__ */