unsigned int buf_len, int *cmd_rc)
{
struct acpi_nfit_desc *acpi_desc = to_acpi_nfit_desc(nd_desc);
- const struct nd_cmd_desc *desc = NULL;
union acpi_object in_obj, in_buf, *out_obj;
+ const struct nd_cmd_desc *desc = NULL;
struct device *dev = acpi_desc->dev;
+ struct nd_cmd_pkg *call_pkg = NULL;
const char *cmd_name, *dimm_name;
- unsigned long cmd_mask;
+ unsigned long cmd_mask, dsm_mask;
acpi_handle handle;
+ unsigned int func;
const u8 *uuid;
u32 offset;
int rc, i;
+ func = cmd;
+ if (cmd == ND_CMD_CALL) {
+ call_pkg = buf;
+ func = call_pkg->nd_command;
+ }
+
if (nvdimm) {
struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
struct acpi_device *adev = nfit_mem->adev;
if (!adev)
return -ENOTTY;
+ if (call_pkg && nfit_mem->family != call_pkg->nd_family)
+ return -ENOTTY;
+
dimm_name = nvdimm_name(nvdimm);
cmd_name = nvdimm_cmd_name(cmd);
cmd_mask = nvdimm_cmd_mask(nvdimm);
+ dsm_mask = nfit_mem->dsm_mask;
desc = nd_cmd_dimm_desc(cmd);
- uuid = to_nfit_uuid(NFIT_DEV_DIMM);
+ uuid = to_nfit_uuid(nfit_mem->family);
handle = adev->handle;
} else {
struct acpi_device *adev = to_acpi_dev(acpi_desc);
cmd_name = nvdimm_bus_cmd_name(cmd);
cmd_mask = nd_desc->cmd_mask;
+ dsm_mask = cmd_mask;
desc = nd_cmd_bus_desc(cmd);
uuid = to_nfit_uuid(NFIT_DEV_BUS);
handle = adev->handle;
if (!desc || (cmd && (desc->out_num + desc->in_num == 0)))
return -ENOTTY;
- if (!test_bit(cmd, &cmd_mask))
+ if (!test_bit(cmd, &cmd_mask) || !test_bit(func, &dsm_mask))
return -ENOTTY;
in_obj.type = ACPI_TYPE_PACKAGE;
in_buf.buffer.length += nd_cmd_in_size(nvdimm, cmd, desc,
i, buf);
+ if (call_pkg) {
+ /* skip over package wrapper */
+ in_buf.buffer.pointer = (void *) &call_pkg->nd_payload;
+ in_buf.buffer.length = call_pkg->nd_size_in;
+ }
+
if (IS_ENABLED(CONFIG_ACPI_NFIT_DEBUG)) {
- dev_dbg(dev, "%s:%s cmd: %s input length: %d\n", __func__,
- dimm_name, cmd_name, in_buf.buffer.length);
- print_hex_dump_debug(cmd_name, DUMP_PREFIX_OFFSET, 4,
- 4, in_buf.buffer.pointer, min_t(u32, 128,
- in_buf.buffer.length), true);
+ dev_dbg(dev, "%s:%s cmd: %d: func: %d input length: %d\n",
+ __func__, dimm_name, cmd, func,
+ in_buf.buffer.length);
+ print_hex_dump_debug("nvdimm in ", DUMP_PREFIX_OFFSET, 4, 4,
+ in_buf.buffer.pointer,
+ min_t(u32, 256, in_buf.buffer.length), true);
}
- out_obj = acpi_evaluate_dsm(handle, uuid, 1, cmd, &in_obj);
+ out_obj = acpi_evaluate_dsm(handle, uuid, 1, func, &in_obj);
if (!out_obj) {
dev_dbg(dev, "%s:%s _DSM failed cmd: %s\n", __func__, dimm_name,
cmd_name);
return -EINVAL;
}
+ if (call_pkg) {
+ call_pkg->nd_fw_size = out_obj->buffer.length;
+ memcpy(call_pkg->nd_payload + call_pkg->nd_size_in,
+ out_obj->buffer.pointer,
+ min(call_pkg->nd_fw_size, call_pkg->nd_size_out));
+
+ ACPI_FREE(out_obj);
+ /*
+ * Need to support FW function w/o known size in advance.
+ * Caller can determine required size based upon nd_fw_size.
+ * If we return an error (like elsewhere) then caller wouldn't
+ * be able to rely upon data returned to make calculation.
+ */
+ return 0;
+ }
+
if (out_obj->package.type != ACPI_TYPE_BUFFER) {
dev_dbg(dev, "%s:%s unexpected output object type cmd: %s type: %d\n",
__func__, dimm_name, cmd_name, out_obj->type);
{
struct acpi_device *adev, *adev_dimm;
struct device *dev = acpi_desc->dev;
- const u8 *uuid = to_nfit_uuid(NFIT_DEV_DIMM);
+ unsigned long dsm_mask;
+ const u8 *uuid;
int i;
/* 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;
adev = to_acpi_dev(acpi_desc);
if (!adev)
return 0;
return force_enable_dimms ? 0 : -ENODEV;
}
- for (i = ND_CMD_SMART; i <= ND_CMD_VENDOR; i++)
+ /*
+ * Until standardization materializes we need to consider up to 3
+ * different command sets. Note, that checking for function0 (bit0)
+ * tells us if any commands are reachable through this uuid.
+ */
+ for (i = NVDIMM_FAMILY_INTEL; i <= NVDIMM_FAMILY_HPE2; i++)
+ if (acpi_check_dsm(adev_dimm->handle, to_nfit_uuid(i), 1, 1))
+ break;
+
+ /* limit the supported commands to those that are publicly documented */
+ nfit_mem->family = i;
+ if (nfit_mem->family == NVDIMM_FAMILY_INTEL)
+ dsm_mask = 0x3fe;
+ else if (nfit_mem->family == NVDIMM_FAMILY_HPE1)
+ dsm_mask = 0x1c3c76;
+ else if (nfit_mem->family == NVDIMM_FAMILY_HPE2)
+ dsm_mask = 0x1fe;
+ else {
+ dev_err(dev, "unknown dimm command family\n");
+ nfit_mem->family = -1;
+ return force_enable_dimms ? 0 : -ENODEV;
+ }
+
+ uuid = to_nfit_uuid(nfit_mem->family);
+ for_each_set_bit(i, &dsm_mask, BITS_PER_LONG)
if (acpi_check_dsm(adev_dimm->handle, uuid, 1, 1ULL << i))
set_bit(i, &nfit_mem->dsm_mask);
int dimm_count = 0;
list_for_each_entry(nfit_mem, &acpi_desc->dimms, list) {
+ unsigned long flags = 0, cmd_mask;
struct nvdimm *nvdimm;
- unsigned long flags = 0;
u32 device_handle;
u16 mem_flags;
int rc;
continue;
/*
- * For now there is 1:1 relationship between cmd_mask and
- * dsm_mask.
+ * TODO: provide translation for non-NVDIMM_FAMILY_INTEL
+ * devices (i.e. from nd_cmd to acpi_dsm) to standardize the
+ * userspace interface.
*/
+ cmd_mask = 1UL << ND_CMD_CALL;
+ if (nfit_mem->family == NVDIMM_FAMILY_INTEL)
+ cmd_mask |= nfit_mem->dsm_mask;
+
nvdimm = nvdimm_create(acpi_desc->nvdimm_bus, nfit_mem,
acpi_nfit_dimm_attribute_groups,
- flags, nfit_mem->dsm_mask);
+ flags, cmd_mask);
if (!nvdimm)
return -ENOMEM;
acpi_str_to_uuid(UUID_PERSISTENT_VIRTUAL_CD, nfit_uuid[NFIT_SPA_PCD]);
acpi_str_to_uuid(UUID_NFIT_BUS, nfit_uuid[NFIT_DEV_BUS]);
acpi_str_to_uuid(UUID_NFIT_DIMM, nfit_uuid[NFIT_DEV_DIMM]);
+ acpi_str_to_uuid(UUID_NFIT_DIMM_N_HPE1, nfit_uuid[NFIT_DEV_DIMM_N_HPE1]);
+ acpi_str_to_uuid(UUID_NFIT_DIMM_N_HPE2, nfit_uuid[NFIT_DEV_DIMM_N_HPE2]);
nfit_wq = create_singlethread_workqueue("nfit");
if (!nfit_wq)
.out_num = 3,
.out_sizes = { 4, 4, UINT_MAX, },
},
+ [ND_CMD_CALL] = {
+ .in_num = 2,
+ .in_sizes = { sizeof(struct nd_cmd_pkg), UINT_MAX, },
+ .out_num = 1,
+ .out_sizes = { UINT_MAX, },
+ },
};
const struct nd_cmd_desc *nd_cmd_dimm_desc(int cmd)
.out_num = 3,
.out_sizes = { 4, 4, 8, },
},
+ [ND_CMD_CALL] = {
+ .in_num = 2,
+ .in_sizes = { sizeof(struct nd_cmd_pkg), UINT_MAX, },
+ .out_num = 1,
+ .out_sizes = { UINT_MAX, },
+ },
};
const struct nd_cmd_desc *nd_cmd_bus_desc(int cmd)
struct nd_cmd_vendor_hdr *hdr = buf;
return hdr->in_length;
+ } else if (cmd == ND_CMD_CALL) {
+ struct nd_cmd_pkg *pkg = buf;
+
+ return pkg->nd_size_in;
}
return UINT_MAX;
return out_field[1];
else if (!nvdimm && cmd == ND_CMD_ARS_STATUS && idx == 2)
return out_field[1] - 8;
+ else if (cmd == ND_CMD_CALL) {
+ struct nd_cmd_pkg *pkg = (struct nd_cmd_pkg *) in_field;
+
+ return pkg->nd_size_out;
+ }
+
return UINT_MAX;
}
unsigned int cmd = _IOC_NR(ioctl_cmd);
void __user *p = (void __user *) arg;
struct device *dev = &nvdimm_bus->dev;
+ struct nd_cmd_pkg pkg;
const char *cmd_name, *dimm_name;
unsigned long cmd_mask;
void *buf;
dimm_name = "bus";
}
+ if (cmd == ND_CMD_CALL) {
+ if (copy_from_user(&pkg, p, sizeof(pkg)))
+ return -EFAULT;
+ }
+
if (!desc || (desc->out_num + desc->in_num == 0) ||
!test_bit(cmd, &cmd_mask))
return -ENOTTY;
case ND_CMD_SET_CONFIG_DATA:
case ND_CMD_ARS_START:
case ND_CMD_CLEAR_ERROR:
+ case ND_CMD_CALL:
dev_dbg(&nvdimm_bus->dev, "'%s' command while read-only.\n",
nvdimm ? nvdimm_cmd_name(cmd)
: nvdimm_bus_cmd_name(cmd));
in_len += in_size;
}
+ if (cmd == ND_CMD_CALL) {
+ dev_dbg(dev, "%s:%s, idx: %llu, in: %zu, out: %zu, len %zu\n",
+ __func__, dimm_name, pkg.nd_command,
+ in_len, out_len, buf_len);
+
+ for (i = 0; i < ARRAY_SIZE(pkg.nd_reserved2); i++)
+ if (pkg.nd_reserved2[i])
+ return -EINVAL;
+ }
+
/* process an output envelope */
for (i = 0; i < desc->out_num; i++) {
u32 out_size = nd_cmd_out_size(nvdimm, cmd, desc, i,
ND_CMD_VENDOR_EFFECT_LOG_SIZE = 7,
ND_CMD_VENDOR_EFFECT_LOG = 8,
ND_CMD_VENDOR = 9,
+ ND_CMD_CALL = 10,
};
enum {
[ND_CMD_VENDOR_EFFECT_LOG_SIZE] = "effect_size",
[ND_CMD_VENDOR_EFFECT_LOG] = "effect_log",
[ND_CMD_VENDOR] = "vendor",
+ [ND_CMD_CALL] = "cmd_call",
};
if (cmd < ARRAY_SIZE(names) && names[cmd])
ARS_STATUS_MASK = 0x0000FFFF,
ARS_EXT_STATUS_SHIFT = 16,
};
+
+/*
+ * struct nd_cmd_pkg
+ *
+ * is a wrapper to a quasi pass thru interface for invoking firmware
+ * associated with nvdimms.
+ *
+ * INPUT PARAMETERS
+ *
+ * nd_family corresponds to the firmware (e.g. DSM) interface.
+ *
+ * nd_command are the function index advertised by the firmware.
+ *
+ * nd_size_in is the size of the input parameters being passed to firmware
+ *
+ * OUTPUT PARAMETERS
+ *
+ * nd_fw_size is the size of the data firmware wants to return for
+ * the call. If nd_fw_size is greater than size of nd_size_out, only
+ * the first nd_size_out bytes are returned.
+ */
+
+struct nd_cmd_pkg {
+ __u64 nd_family; /* family of commands */
+ __u64 nd_command;
+ __u32 nd_size_in; /* INPUT: size of input args */
+ __u32 nd_size_out; /* INPUT: size of payload */
+ __u32 nd_reserved2[9]; /* reserved must be zero */
+ __u32 nd_fw_size; /* OUTPUT: size fw wants to return */
+ unsigned char nd_payload[]; /* Contents of call */
+};
+
+/* These NVDIMM families represent pre-standardization command sets */
+#define NVDIMM_FAMILY_INTEL 0
+#define NVDIMM_FAMILY_HPE1 1
+#define NVDIMM_FAMILY_HPE2 2
+
+#define ND_IOCTL_CALL _IOWR(ND_IOCTL, ND_CMD_CALL,\
+ struct nd_cmd_pkg)
+
#endif /* __NDCTL_H__ */
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff