diff options
Diffstat (limited to 'drivers/acpi/nfit/core.c')
| -rw-r--r-- | drivers/acpi/nfit/core.c | 1064 |
1 files changed, 437 insertions, 627 deletions
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index 5143e11e3b0f..3eb56b77cb6d 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -1,18 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright(c) 2013-2015 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. */ #include <linux/list_sort.h> #include <linux/libnvdimm.h> #include <linux/module.h> +#include <linux/nospec.h> #include <linux/mutex.h> #include <linux/ndctl.h> #include <linux/sysfs.h> @@ -55,6 +48,10 @@ static bool no_init_ars; module_param(no_init_ars, bool, 0644); MODULE_PARM_DESC(no_init_ars, "Skip ARS run at nfit init time"); +static bool force_labels; +module_param(force_labels, bool, 0444); +MODULE_PARM_DESC(force_labels, "Opt-in to labels despite missing methods"); + LIST_HEAD(acpi_descs); DEFINE_MUTEX(acpi_desc_lock); @@ -77,6 +74,18 @@ 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; @@ -274,18 +283,19 @@ err: static union acpi_object *int_to_buf(union acpi_object *integer) { - union acpi_object *buf = ACPI_ALLOCATE(sizeof(*buf) + 4); + union acpi_object *buf = NULL; void *dst = NULL; - if (!buf) - goto err; - if (integer->type != ACPI_TYPE_INTEGER) { WARN_ONCE(1, "BIOS bug, unexpected element type: %d\n", integer->type); goto err; } + buf = ACPI_ALLOCATE(sizeof(*buf) + 4); + if (!buf) + goto err; + dst = buf + 1; buf->type = ACPI_TYPE_BUFFER; buf->buffer.length = 4; @@ -364,33 +374,17 @@ static union acpi_object *acpi_label_info(acpi_handle handle) static u8 nfit_dsm_revid(unsigned family, unsigned func) { - static const u8 revid_table[NVDIMM_FAMILY_MAX+1][32] = { + 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; if (family > NVDIMM_FAMILY_MAX) return 0; - if (func > 31) + if (func > NVDIMM_CMD_MAX) return 0; id = revid_table[family][func]; if (id == 0) @@ -409,6 +403,37 @@ static bool payload_dumpable(struct nvdimm *nvdimm, unsigned int func) return true; } +static int cmd_to_func(struct nfit_mem *nfit_mem, unsigned int cmd, + struct nd_cmd_pkg *call_pkg, int *family) +{ + if (call_pkg) { + int i; + + if (nfit_mem && nfit_mem->family != call_pkg->nd_family) + return -ENOTTY; + + 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; + } + + /* In the !call_pkg case, bus commands == bus functions */ + if (!nfit_mem) + return cmd; + + /* Linux ND commands == NVDIMM_FAMILY_INTEL function numbers */ + if (nfit_mem->family == NVDIMM_FAMILY_INTEL) + return cmd; + + /* + * Force function number validation to fail since 0 is never + * published as a valid function in dsm_mask. + */ + return 0; +} + 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) { @@ -422,29 +447,29 @@ int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm, unsigned long cmd_mask, dsm_mask; u32 offset, fw_status = 0; acpi_handle handle; - unsigned int func; const guid_t *guid; - int rc, i; + int func, rc, i; + int family = 0; if (cmd_rc) *cmd_rc = -EINVAL; - func = cmd; + if (cmd == ND_CMD_CALL) { - call_pkg = buf; - func = call_pkg->nd_command; + if (!buf || buf_len < sizeof(*call_pkg)) + return -EINVAL; - for (i = 0; i < ARRAY_SIZE(call_pkg->nd_reserved2); i++) - if (call_pkg->nd_reserved2[i]) - return -EINVAL; + call_pkg = buf; } + func = cmd_to_func(nfit_mem, cmd, call_pkg, &family); + if (func < 0) + return func; + if (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); @@ -458,11 +483,20 @@ 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; + if (cmd == ND_CMD_CALL && call_pkg->nd_family) { + family = call_pkg->nd_family; + if (call_pkg->nd_family > NVDIMM_BUS_FAMILY_MAX || + !test_bit(family, &nd_desc->bus_family_mask)) + return -EINVAL; + family = array_index_nospec(family, + NVDIMM_BUS_FAMILY_MAX + 1); + 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"; } @@ -470,7 +504,14 @@ int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm, if (!desc || (cmd && (desc->out_num + desc->in_num == 0))) return -ENOTTY; - if (!test_bit(cmd, &cmd_mask) || !test_bit(func, &dsm_mask)) + /* + * Check for a valid command. For ND_CMD_CALL, we also have to + * make sure that the DSM function is supported. + */ + if (cmd == ND_CMD_CALL && + (func > NVDIMM_CMD_MAX || !test_bit(func, &dsm_mask))) + return -ENOTTY; + else if (!test_bit(cmd, &cmd_mask)) return -ENOTTY; in_obj.type = ACPI_TYPE_PACKAGE; @@ -491,8 +532,8 @@ 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, @@ -528,6 +569,19 @@ int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm, return -EINVAL; } + if (out_obj->type != ACPI_TYPE_BUFFER) { + dev_dbg(dev, "%s unexpected output object type cmd: %s type: %d\n", + dimm_name, cmd_name, out_obj->type); + rc = -EINVAL; + goto out; + } + + dev_dbg(dev, "%s cmd: %s output length: %d\n", dimm_name, + cmd_name, out_obj->buffer.length); + print_hex_dump_debug(cmd_name, DUMP_PREFIX_OFFSET, 4, 4, + out_obj->buffer.pointer, + min_t(u32, 128, out_obj->buffer.length), true); + if (call_pkg) { call_pkg->nd_fw_size = out_obj->buffer.length; memcpy(call_pkg->nd_payload + call_pkg->nd_size_in, @@ -546,19 +600,6 @@ int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm, return 0; } - if (out_obj->package.type != ACPI_TYPE_BUFFER) { - dev_dbg(dev, "%s unexpected output object type cmd: %s type: %d\n", - dimm_name, cmd_name, out_obj->type); - rc = -EINVAL; - goto out; - } - - dev_dbg(dev, "%s cmd: %s output length: %d\n", dimm_name, - cmd_name, out_obj->buffer.length); - print_hex_dump_debug(cmd_name, DUMP_PREFIX_OFFSET, 4, 4, - out_obj->buffer.pointer, - min_t(u32, 128, out_obj->buffer.length), true); - for (i = 0, offset = 0; i < desc->out_num; i++) { u32 out_size = nd_cmd_out_size(nvdimm, cmd, desc, i, buf, (u32 *) out_obj->buffer.pointer, @@ -642,14 +683,23 @@ static const char *spa_type_name(u16 type) int nfit_spa_type(struct acpi_nfit_system_address *spa) { + guid_t guid; int i; + import_guid(&guid, spa->range_guid); for (i = 0; i < NFIT_UUID_MAX; i++) - if (guid_equal(to_nfit_uuid(i), (guid_t *)&spa->range_guid)) + if (guid_equal(to_nfit_uuid(i), &guid)) return i; return -1; } +static size_t sizeof_spa(struct acpi_nfit_system_address *spa) +{ + if (spa->flags & ACPI_NFIT_LOCATION_COOKIE_VALID) + return sizeof(*spa); + return sizeof(*spa) - 8; +} + static bool add_spa(struct acpi_nfit_desc *acpi_desc, struct nfit_table_prev *prev, struct acpi_nfit_system_address *spa) @@ -657,22 +707,22 @@ static bool add_spa(struct acpi_nfit_desc *acpi_desc, struct device *dev = acpi_desc->dev; struct nfit_spa *nfit_spa; - if (spa->header.length != sizeof(*spa)) + if (spa->header.length != sizeof_spa(spa)) return false; list_for_each_entry(nfit_spa, &prev->spas, list) { - if (memcmp(nfit_spa->spa, spa, sizeof(*spa)) == 0) { + if (memcmp(nfit_spa->spa, spa, sizeof_spa(spa)) == 0) { list_move_tail(&nfit_spa->list, &acpi_desc->spas); return true; } } - nfit_spa = devm_kzalloc(dev, sizeof(*nfit_spa) + sizeof(*spa), + nfit_spa = devm_kzalloc(dev, sizeof(*nfit_spa) + sizeof_spa(spa), GFP_KERNEL); if (!nfit_spa) return false; INIT_LIST_HEAD(&nfit_spa->list); - memcpy(nfit_spa->spa, spa, sizeof(*spa)); + memcpy(nfit_spa->spa, spa, sizeof_spa(spa)); list_add_tail(&nfit_spa->list, &acpi_desc->spas); dev_dbg(dev, "spa index: %d type: %s\n", spa->range_index, @@ -810,7 +860,7 @@ static size_t sizeof_idt(struct acpi_nfit_interleave *idt) { if (idt->header.length < sizeof(*idt)) return 0; - return sizeof(*idt) + sizeof(u32) * (idt->line_count - 1); + return sizeof(*idt) + sizeof(u32) * idt->line_count; } static bool add_idt(struct acpi_nfit_desc *acpi_desc, @@ -849,7 +899,7 @@ static size_t sizeof_flush(struct acpi_nfit_flush_address *flush) { if (flush->header.length < sizeof(*flush)) return 0; - return sizeof(*flush) + sizeof(u64) * (flush->hint_count - 1); + return struct_size(flush, hint_address, flush->hint_count); } static bool add_flush(struct acpi_nfit_desc *acpi_desc, @@ -954,80 +1004,6 @@ static void *add_table(struct acpi_nfit_desc *acpi_desc, return table + hdr->length; } -static void nfit_mem_find_spa_bdw(struct acpi_nfit_desc *acpi_desc, - struct nfit_mem *nfit_mem) -{ - u32 device_handle = __to_nfit_memdev(nfit_mem)->device_handle; - u16 dcr = nfit_mem->dcr->region_index; - struct nfit_spa *nfit_spa; - - list_for_each_entry(nfit_spa, &acpi_desc->spas, list) { - u16 range_index = nfit_spa->spa->range_index; - int type = nfit_spa_type(nfit_spa->spa); - struct nfit_memdev *nfit_memdev; - - if (type != NFIT_SPA_BDW) - continue; - - list_for_each_entry(nfit_memdev, &acpi_desc->memdevs, list) { - if (nfit_memdev->memdev->range_index != range_index) - continue; - if (nfit_memdev->memdev->device_handle != device_handle) - continue; - if (nfit_memdev->memdev->region_index != dcr) - continue; - - nfit_mem->spa_bdw = nfit_spa->spa; - return; - } - } - - dev_dbg(acpi_desc->dev, "SPA-BDW not found for SPA-DCR %d\n", - nfit_mem->spa_dcr->range_index); - nfit_mem->bdw = NULL; -} - -static void nfit_mem_init_bdw(struct acpi_nfit_desc *acpi_desc, - struct nfit_mem *nfit_mem, struct acpi_nfit_system_address *spa) -{ - u16 dcr = __to_nfit_memdev(nfit_mem)->region_index; - struct nfit_memdev *nfit_memdev; - struct nfit_bdw *nfit_bdw; - struct nfit_idt *nfit_idt; - u16 idt_idx, range_index; - - list_for_each_entry(nfit_bdw, &acpi_desc->bdws, list) { - if (nfit_bdw->bdw->region_index != dcr) - continue; - nfit_mem->bdw = nfit_bdw->bdw; - break; - } - - if (!nfit_mem->bdw) - return; - - nfit_mem_find_spa_bdw(acpi_desc, nfit_mem); - - if (!nfit_mem->spa_bdw) - return; - - range_index = nfit_mem->spa_bdw->range_index; - list_for_each_entry(nfit_memdev, &acpi_desc->memdevs, list) { - if (nfit_memdev->memdev->range_index != range_index || - nfit_memdev->memdev->region_index != dcr) - continue; - nfit_mem->memdev_bdw = nfit_memdev->memdev; - idt_idx = nfit_memdev->memdev->interleave_index; - list_for_each_entry(nfit_idt, &acpi_desc->idts, list) { - if (nfit_idt->idt->interleave_index != idt_idx) - continue; - nfit_mem->idt_bdw = nfit_idt->idt; - break; - } - break; - } -} - static int __nfit_mem_init(struct acpi_nfit_desc *acpi_desc, struct acpi_nfit_system_address *spa) { @@ -1144,7 +1120,6 @@ static int __nfit_mem_init(struct acpi_nfit_desc *acpi_desc, nfit_mem->idt_dcr = nfit_idt->idt; break; } - nfit_mem_init_bdw(acpi_desc, nfit_mem, spa); } else if (type == NFIT_SPA_PM) { /* * A single dimm may belong to multiple SPA-PM @@ -1159,7 +1134,8 @@ static int __nfit_mem_init(struct acpi_nfit_desc *acpi_desc, return 0; } -static int nfit_mem_cmp(void *priv, struct list_head *_a, struct list_head *_b) +static int nfit_mem_cmp(void *priv, const struct list_head *_a, + const struct list_head *_b) { struct nfit_mem *a = container_of(_a, typeof(*a), list); struct nfit_mem *b = container_of(_b, typeof(*b), list); @@ -1213,8 +1189,9 @@ 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 sysfs_emit(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); @@ -1226,7 +1203,7 @@ static ssize_t revision_show(struct device *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, "%d\n", acpi_desc->acpi_header.revision); + return sysfs_emit(buf, "%d\n", acpi_desc->acpi_header.revision); } static DEVICE_ATTR_RO(revision); @@ -1237,7 +1214,7 @@ static ssize_t hw_error_scrub_show(struct device *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, "%d\n", acpi_desc->scrub_mode); + return sysfs_emit(buf, "%d\n", acpi_desc->scrub_mode); } /* @@ -1291,19 +1268,30 @@ static ssize_t scrub_show(struct device *dev, struct device_attribute *attr, char *buf) { struct nvdimm_bus_descriptor *nd_desc; + struct acpi_nfit_desc *acpi_desc; ssize_t rc = -ENXIO; + bool busy; device_lock(dev); nd_desc = dev_get_drvdata(dev); - if (nd_desc) { - struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc); + if (!nd_desc) { + device_unlock(dev); + return rc; + } + acpi_desc = to_acpi_desc(nd_desc); - mutex_lock(&acpi_desc->init_mutex); - rc = sprintf(buf, "%d%s", acpi_desc->scrub_count, - acpi_desc->scrub_busy - && !acpi_desc->cancel ? "+\n" : "\n"); - mutex_unlock(&acpi_desc->init_mutex); + mutex_lock(&acpi_desc->init_mutex); + busy = test_bit(ARS_BUSY, &acpi_desc->scrub_flags) + && !test_bit(ARS_CANCEL, &acpi_desc->scrub_flags); + rc = sysfs_emit(buf, "%d%s", acpi_desc->scrub_count, busy ? "+\n" : "\n"); + /* Allow an admin to poll the busy state at a higher rate */ + if (busy && capable(CAP_SYS_RAWIO) && !test_and_set_bit(ARS_POLL, + &acpi_desc->scrub_flags)) { + acpi_desc->scrub_tmo = 1; + mod_delayed_work(nfit_wq, &acpi_desc->dwork, HZ); } + + mutex_unlock(&acpi_desc->init_mutex); device_unlock(dev); return rc; } @@ -1346,11 +1334,15 @@ static bool ars_supported(struct nvdimm_bus *nvdimm_bus) static umode_t nfit_visible(struct kobject *kobj, struct attribute *a, int n) { - struct device *dev = container_of(kobj, struct device, kobj); + struct device *dev = kobj_to_dev(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; } @@ -1359,6 +1351,7 @@ 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, }; @@ -1369,7 +1362,6 @@ static const struct attribute_group acpi_nfit_attribute_group = { }; static const struct attribute_group *acpi_nfit_attribute_groups[] = { - &nvdimm_bus_attribute_group, &acpi_nfit_attribute_group, NULL, }; @@ -1395,7 +1387,7 @@ static ssize_t handle_show(struct device *dev, { struct acpi_nfit_memory_map *memdev = to_nfit_memdev(dev); - return sprintf(buf, "%#x\n", memdev->device_handle); + return sysfs_emit(buf, "%#x\n", memdev->device_handle); } static DEVICE_ATTR_RO(handle); @@ -1404,7 +1396,7 @@ static ssize_t phys_id_show(struct device *dev, { struct acpi_nfit_memory_map *memdev = to_nfit_memdev(dev); - return sprintf(buf, "%#x\n", memdev->physical_id); + return sysfs_emit(buf, "%#x\n", memdev->physical_id); } static DEVICE_ATTR_RO(phys_id); @@ -1413,7 +1405,7 @@ static ssize_t vendor_show(struct device *dev, { struct acpi_nfit_control_region *dcr = to_nfit_dcr(dev); - return sprintf(buf, "0x%04x\n", be16_to_cpu(dcr->vendor_id)); + return sysfs_emit(buf, "0x%04x\n", be16_to_cpu(dcr->vendor_id)); } static DEVICE_ATTR_RO(vendor); @@ -1422,7 +1414,7 @@ static ssize_t rev_id_show(struct device *dev, { struct acpi_nfit_control_region *dcr = to_nfit_dcr(dev); - return sprintf(buf, "0x%04x\n", be16_to_cpu(dcr->revision_id)); + return sysfs_emit(buf, "0x%04x\n", be16_to_cpu(dcr->revision_id)); } static DEVICE_ATTR_RO(rev_id); @@ -1431,7 +1423,7 @@ static ssize_t device_show(struct device *dev, { struct acpi_nfit_control_region *dcr = to_nfit_dcr(dev); - return sprintf(buf, "0x%04x\n", be16_to_cpu(dcr->device_id)); + return sysfs_emit(buf, "0x%04x\n", be16_to_cpu(dcr->device_id)); } static DEVICE_ATTR_RO(device); @@ -1440,7 +1432,7 @@ static ssize_t subsystem_vendor_show(struct device *dev, { struct acpi_nfit_control_region *dcr = to_nfit_dcr(dev); - return sprintf(buf, "0x%04x\n", be16_to_cpu(dcr->subsystem_vendor_id)); + return sysfs_emit(buf, "0x%04x\n", be16_to_cpu(dcr->subsystem_vendor_id)); } static DEVICE_ATTR_RO(subsystem_vendor); @@ -1449,7 +1441,7 @@ static ssize_t subsystem_rev_id_show(struct device *dev, { struct acpi_nfit_control_region *dcr = to_nfit_dcr(dev); - return sprintf(buf, "0x%04x\n", + return sysfs_emit(buf, "0x%04x\n", be16_to_cpu(dcr->subsystem_revision_id)); } static DEVICE_ATTR_RO(subsystem_rev_id); @@ -1459,7 +1451,7 @@ static ssize_t subsystem_device_show(struct device *dev, { struct acpi_nfit_control_region *dcr = to_nfit_dcr(dev); - return sprintf(buf, "0x%04x\n", be16_to_cpu(dcr->subsystem_device_id)); + return sysfs_emit(buf, "0x%04x\n", be16_to_cpu(dcr->subsystem_device_id)); } static DEVICE_ATTR_RO(subsystem_device); @@ -1470,8 +1462,6 @@ static int num_nvdimm_formats(struct nvdimm *nvdimm) if (nfit_mem->memdev_pmem) formats++; - if (nfit_mem->memdev_bdw) - formats++; return formats; } @@ -1480,7 +1470,7 @@ static ssize_t format_show(struct device *dev, { struct acpi_nfit_control_region *dcr = to_nfit_dcr(dev); - return sprintf(buf, "0x%04x\n", le16_to_cpu(dcr->code)); + return sysfs_emit(buf, "0x%04x\n", le16_to_cpu(dcr->code)); } static DEVICE_ATTR_RO(format); @@ -1513,11 +1503,11 @@ static ssize_t format1_show(struct device *dev, continue; if (nfit_dcr->dcr->code == dcr->code) continue; - rc = sprintf(buf, "0x%04x\n", + rc = sysfs_emit(buf, "0x%04x\n", le16_to_cpu(nfit_dcr->dcr->code)); break; } - if (rc != ENXIO) + if (rc != -ENXIO) break; } mutex_unlock(&acpi_desc->init_mutex); @@ -1530,7 +1520,7 @@ static ssize_t formats_show(struct device *dev, { struct nvdimm *nvdimm = to_nvdimm(dev); - return sprintf(buf, "%d\n", num_nvdimm_formats(nvdimm)); + return sysfs_emit(buf, "%d\n", num_nvdimm_formats(nvdimm)); } static DEVICE_ATTR_RO(formats); @@ -1539,7 +1529,7 @@ static ssize_t serial_show(struct device *dev, { struct acpi_nfit_control_region *dcr = to_nfit_dcr(dev); - return sprintf(buf, "0x%08x\n", be32_to_cpu(dcr->serial_number)); + return sysfs_emit(buf, "0x%08x\n", be32_to_cpu(dcr->serial_number)); } static DEVICE_ATTR_RO(serial); @@ -1551,7 +1541,7 @@ static ssize_t family_show(struct device *dev, if (nfit_mem->family < 0) return -ENXIO; - return sprintf(buf, "%d\n", nfit_mem->family); + return sysfs_emit(buf, "%d\n", nfit_mem->family); } static DEVICE_ATTR_RO(family); @@ -1563,7 +1553,7 @@ static ssize_t dsm_mask_show(struct device *dev, if (nfit_mem->family < 0) return -ENXIO; - return sprintf(buf, "%#lx\n", nfit_mem->dsm_mask); + return sysfs_emit(buf, "%#lx\n", nfit_mem->dsm_mask); } static DEVICE_ATTR_RO(dsm_mask); @@ -1577,7 +1567,7 @@ static ssize_t flags_show(struct device *dev, if (test_bit(NFIT_MEM_DIRTY, &nfit_mem->flags)) flags |= ACPI_NFIT_MEM_FLUSH_FAILED; - return sprintf(buf, "%s%s%s%s%s%s%s\n", + return sysfs_emit(buf, "%s%s%s%s%s%s%s\n", flags & ACPI_NFIT_MEM_SAVE_FAILED ? "save_fail " : "", flags & ACPI_NFIT_MEM_RESTORE_FAILED ? "restore_fail " : "", flags & ACPI_NFIT_MEM_FLUSH_FAILED ? "flush_fail " : "", @@ -1594,7 +1584,7 @@ static ssize_t id_show(struct device *dev, struct nvdimm *nvdimm = to_nvdimm(dev); struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm); - return sprintf(buf, "%s\n", nfit_mem->id); + return sysfs_emit(buf, "%s\n", nfit_mem->id); } static DEVICE_ATTR_RO(id); @@ -1604,7 +1594,7 @@ static ssize_t dirty_shutdown_show(struct device *dev, struct nvdimm *nvdimm = to_nvdimm(dev); struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm); - return sprintf(buf, "%d\n", nfit_mem->dirty_shutdown); + return sysfs_emit(buf, "%d\n", nfit_mem->dirty_shutdown); } static DEVICE_ATTR_RO(dirty_shutdown); @@ -1632,7 +1622,7 @@ static struct attribute *acpi_nfit_dimm_attributes[] = { static umode_t acpi_nfit_dimm_attr_visible(struct kobject *kobj, struct attribute *a, int n) { - struct device *dev = container_of(kobj, struct device, kobj); + struct device *dev = kobj_to_dev(kobj); struct nvdimm *nvdimm = to_nvdimm(dev); struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm); @@ -1663,8 +1653,6 @@ static const struct attribute_group acpi_nfit_dimm_attribute_group = { }; static const struct attribute_group *acpi_nfit_dimm_attribute_groups[] = { - &nvdimm_attribute_group, - &nd_device_attribute_group, &acpi_nfit_dimm_attribute_group, NULL, }; @@ -1733,14 +1721,14 @@ static bool acpi_nvdimm_has_method(struct acpi_device *adev, char *method) __weak void nfit_intel_shutdown_status(struct nfit_mem *nfit_mem) { + struct device *dev = &nfit_mem->adev->dev; struct nd_intel_smart smart = { 0 }; union acpi_object in_buf = { - .type = ACPI_TYPE_BUFFER, - .buffer.pointer = (char *) &smart, - .buffer.length = sizeof(smart), + .buffer.type = ACPI_TYPE_BUFFER, + .buffer.length = 0, }; union acpi_object in_obj = { - .type = ACPI_TYPE_PACKAGE, + .package.type = ACPI_TYPE_PACKAGE, .package.count = 1, .package.elements = &in_buf, }; @@ -1754,9 +1742,15 @@ __weak void nfit_intel_shutdown_status(struct nfit_mem *nfit_mem) if ((nfit_mem->dsm_mask & (1 << func)) == 0) return; - out_obj = acpi_evaluate_dsm(handle, guid, revid, func, &in_obj); - if (!out_obj) + out_obj = acpi_evaluate_dsm_typed(handle, guid, revid, func, &in_obj, ACPI_TYPE_BUFFER); + if (!out_obj || out_obj->buffer.length < sizeof(smart)) { + dev_dbg(dev->parent, "%s: failed to retrieve initial health\n", + dev_name(dev)); + ACPI_FREE(out_obj); return; + } + memcpy(&smart, out_obj->buffer.pointer, sizeof(smart)); + ACPI_FREE(out_obj); if (smart.flags & ND_INTEL_SMART_SHUTDOWN_VALID) { if (smart.shutdown_state) @@ -1767,7 +1761,6 @@ __weak void nfit_intel_shutdown_status(struct nfit_mem *nfit_mem) set_bit(NFIT_MEM_DIRTY_COUNT, &nfit_mem->flags); nfit_mem->dirty_shutdown = smart.shutdown_count; } - ACPI_FREE(out_obj); } static void populate_shutdown_status(struct nfit_mem *nfit_mem) @@ -1784,6 +1777,7 @@ 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; @@ -1795,6 +1789,7 @@ 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", @@ -1835,14 +1830,25 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc, dev_set_drvdata(&adev_dimm->dev, nfit_mem); /* - * Until standardization materializes we need to consider 4 - * different command sets. Note, that checking for function0 (bit0) - * tells us if any commands are reachable through this GUID. + * There are 4 "legacy" NVDIMM command sets + * (NVDIMM_FAMILY_{INTEL,MSFT,HPE1,HPE2}) that were created before + * an EFI working group was established to constrain this + * proliferation. The nfit driver probes for the supported command + * set by GUID. Note, if you're a platform developer looking to add + * a new command set to this probe, consider using an existing set, + * or otherwise seek approval to publish the command set at + * http://www.uefi.org/RFIC_LIST. + * + * 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; @@ -1860,6 +1866,8 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc, dsm_mask &= ~(1 << 8); } else if (nfit_mem->family == NVDIMM_FAMILY_MSFT) { dsm_mask = 0xffffffff; + } else if (nfit_mem->family == NVDIMM_FAMILY_HYPERV) { + dsm_mask = 0x1f; } else { dev_dbg(dev, "unknown dimm command family\n"); nfit_mem->family = -1; @@ -1867,6 +1875,13 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc, return 0; } + /* + * Function 0 is the command interrogation function, don't + * export it to potential userspace use, and enable it to be + * used as an error value in acpi_nfit_ctl(). + */ + dsm_mask &= ~1UL; + guid = to_nfit_uuid(nfit_mem->family); for_each_set_bit(i, &dsm_mask, BITS_PER_LONG) if (acpi_check_dsm(adev_dimm->handle, guid, @@ -1882,18 +1897,32 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc, | 1 << ND_CMD_SET_CONFIG_DATA; if (family == NVDIMM_FAMILY_INTEL && (dsm_mask & label_mask) == label_mask) - return 0; + /* skip _LS{I,R,W} enabling */; + else { + if (acpi_nvdimm_has_method(adev_dimm, "_LSI") + && acpi_nvdimm_has_method(adev_dimm, "_LSR")) { + dev_dbg(dev, "%s: has _LSR\n", dev_name(&adev_dimm->dev)); + set_bit(NFIT_MEM_LSR, &nfit_mem->flags); + } - if (acpi_nvdimm_has_method(adev_dimm, "_LSI") - && acpi_nvdimm_has_method(adev_dimm, "_LSR")) { - dev_dbg(dev, "%s: has _LSR\n", dev_name(&adev_dimm->dev)); - set_bit(NFIT_MEM_LSR, &nfit_mem->flags); - } + if (test_bit(NFIT_MEM_LSR, &nfit_mem->flags) + && acpi_nvdimm_has_method(adev_dimm, "_LSW")) { + dev_dbg(dev, "%s: has _LSW\n", dev_name(&adev_dimm->dev)); + set_bit(NFIT_MEM_LSW, &nfit_mem->flags); + } - if (test_bit(NFIT_MEM_LSR, &nfit_mem->flags) - && acpi_nvdimm_has_method(adev_dimm, "_LSW")) { - dev_dbg(dev, "%s: has _LSW\n", dev_name(&adev_dimm->dev)); - set_bit(NFIT_MEM_LSW, &nfit_mem->flags); + /* + * Quirk read-only label configurations to preserve + * access to label-less namespaces by default. + */ + if (!test_bit(NFIT_MEM_LSW, &nfit_mem->flags) + && !force_labels) { + dev_dbg(dev, "%s: No _LSW, disable labels\n", + dev_name(&adev_dimm->dev)); + clear_bit(NFIT_MEM_LSR, &nfit_mem->flags); + } else + dev_dbg(dev, "%s: Force enable labels\n", + dev_name(&adev_dimm->dev)); } populate_shutdown_status(nfit_mem); @@ -1937,6 +1966,26 @@ 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; @@ -1957,9 +2006,6 @@ static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc) continue; } - if (nfit_mem->bdw && nfit_mem->memdev_pmem) - set_bit(NDD_ALIASING, &flags); - /* collate flags across all memdevs for this dimm */ list_for_each_entry(nfit_memdev, &acpi_desc->memdevs, list) { struct acpi_nfit_memory_map *dimm_memdev; @@ -2007,7 +2053,8 @@ 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; @@ -2017,7 +2064,7 @@ static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc) if ((mem_flags & ACPI_NFIT_MEM_FAILED_MASK) == 0) continue; - dev_info(acpi_desc->dev, "%s flags:%s%s%s%s%s\n", + dev_err(acpi_desc->dev, "Error found in NVDIMM %s flags:%s%s%s%s%s\n", nvdimm_name(nvdimm), mem_flags & ACPI_NFIT_MEM_SAVE_FAILED ? " save_fail" : "", mem_flags & ACPI_NFIT_MEM_RESTORE_FAILED ? " restore_fail":"", @@ -2042,11 +2089,6 @@ static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc) if (!nvdimm) continue; - rc = nvdimm_security_setup_events(nvdimm); - if (rc < 0) - dev_warn(acpi_desc->dev, - "security event setup failed: %d\n", rc); - nfit_kernfs = sysfs_get_dirent(nvdimm_kobj(nvdimm)->sd, "nfit"); if (nfit_kernfs) nfit_mem->flags_attr = sysfs_get_dirent(nfit_kernfs, @@ -2066,22 +2108,33 @@ static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc) * 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, + 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); + 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; @@ -2089,7 +2142,6 @@ 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) | @@ -2102,7 +2154,20 @@ 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, @@ -2111,7 +2176,7 @@ static ssize_t range_index_show(struct device *dev, struct nd_region *nd_region = to_nd_region(dev); struct nfit_spa *nfit_spa = nd_region_provider_data(nd_region); - return sprintf(buf, "%d\n", nfit_spa->spa->range_index); + return sysfs_emit(buf, "%d\n", nfit_spa->spa->range_index); } static DEVICE_ATTR_RO(range_index); @@ -2126,50 +2191,30 @@ static const struct attribute_group acpi_nfit_region_attribute_group = { }; static const struct attribute_group *acpi_nfit_region_attribute_groups[] = { - &nd_region_attribute_group, - &nd_mapping_attribute_group, - &nd_device_attribute_group, - &nd_numa_attribute_group, &acpi_nfit_region_attribute_group, NULL, }; /* enough info to uniquely specify an interleave set */ struct nfit_set_info { - struct nfit_set_info_map { - u64 region_offset; - u32 serial_number; - u32 pad; - } mapping[0]; + u64 region_offset; + u32 serial_number; + u32 pad; }; struct nfit_set_info2 { - struct nfit_set_info_map2 { - u64 region_offset; - u32 serial_number; - u16 vendor_id; - u16 manufacturing_date; - u8 manufacturing_location; - u8 reserved[31]; - } mapping[0]; + u64 region_offset; + u32 serial_number; + u16 vendor_id; + u16 manufacturing_date; + u8 manufacturing_location; + u8 reserved[31]; }; -static size_t sizeof_nfit_set_info(int num_mappings) -{ - return sizeof(struct nfit_set_info) - + num_mappings * sizeof(struct nfit_set_info_map); -} - -static size_t sizeof_nfit_set_info2(int num_mappings) -{ - return sizeof(struct nfit_set_info2) - + num_mappings * sizeof(struct nfit_set_info_map2); -} - static int cmp_map_compat(const void *m0, const void *m1) { - const struct nfit_set_info_map *map0 = m0; - const struct nfit_set_info_map *map1 = m1; + const struct nfit_set_info *map0 = m0; + const struct nfit_set_info *map1 = m1; return memcmp(&map0->region_offset, &map1->region_offset, sizeof(u64)); @@ -2177,8 +2222,8 @@ static int cmp_map_compat(const void *m0, const void *m1) static int cmp_map(const void *m0, const void *m1) { - const struct nfit_set_info_map *map0 = m0; - const struct nfit_set_info_map *map1 = m1; + const struct nfit_set_info *map0 = m0; + const struct nfit_set_info *map1 = m1; if (map0->region_offset < map1->region_offset) return -1; @@ -2189,8 +2234,8 @@ static int cmp_map(const void *m0, const void *m1) static int cmp_map2(const void *m0, const void *m1) { - const struct nfit_set_info_map2 *map0 = m0; - const struct nfit_set_info_map2 *map1 = m1; + const struct nfit_set_info2 *map0 = m0; + const struct nfit_set_info2 *map1 = m1; if (map0->region_offset < map1->region_offset) return -1; @@ -2216,34 +2261,31 @@ static int acpi_nfit_init_interleave_set(struct acpi_nfit_desc *acpi_desc, struct nd_region_desc *ndr_desc, struct acpi_nfit_system_address *spa) { + u16 nr = ndr_desc->num_mappings; + struct nfit_set_info2 *info2 __free(kfree) = + kcalloc(nr, sizeof(*info2), GFP_KERNEL); + struct nfit_set_info *info __free(kfree) = + kcalloc(nr, sizeof(*info), GFP_KERNEL); struct device *dev = acpi_desc->dev; struct nd_interleave_set *nd_set; - u16 nr = ndr_desc->num_mappings; - struct nfit_set_info2 *info2; - struct nfit_set_info *info; int i; - nd_set = devm_kzalloc(dev, sizeof(*nd_set), GFP_KERNEL); - if (!nd_set) - return -ENOMEM; - guid_copy(&nd_set->type_guid, (guid_t *) spa->range_guid); - - info = devm_kzalloc(dev, sizeof_nfit_set_info(nr), GFP_KERNEL); - if (!info) + if (!info || !info2) return -ENOMEM; - info2 = devm_kzalloc(dev, sizeof_nfit_set_info2(nr), GFP_KERNEL); - if (!info2) + nd_set = devm_kzalloc(dev, sizeof(*nd_set), GFP_KERNEL); + if (!nd_set) return -ENOMEM; + import_guid(&nd_set->type_guid, spa->range_guid); for (i = 0; i < nr; i++) { struct nd_mapping_desc *mapping = &ndr_desc->mapping[i]; - struct nfit_set_info_map *map = &info->mapping[i]; - struct nfit_set_info_map2 *map2 = &info2->mapping[i]; struct nvdimm *nvdimm = mapping->nvdimm; struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm); - struct acpi_nfit_memory_map *memdev = memdev_from_spa(acpi_desc, - spa->range_index, i); + struct nfit_set_info *map = &info[i]; + struct nfit_set_info2 *map2 = &info2[i]; + struct acpi_nfit_memory_map *memdev = + memdev_from_spa(acpi_desc, spa->range_index, i); struct acpi_nfit_control_region *dcr = nfit_mem->dcr; if (!memdev || !nfit_mem->dcr) { @@ -2262,23 +2304,20 @@ static int acpi_nfit_init_interleave_set(struct acpi_nfit_desc *acpi_desc, } /* v1.1 namespaces */ - sort(&info->mapping[0], nr, sizeof(struct nfit_set_info_map), - cmp_map, NULL); - nd_set->cookie1 = nd_fletcher64(info, sizeof_nfit_set_info(nr), 0); + sort(info, nr, sizeof(*info), cmp_map, NULL); + nd_set->cookie1 = nd_fletcher64(info, sizeof(*info) * nr, 0); /* v1.2 namespaces */ - sort(&info2->mapping[0], nr, sizeof(struct nfit_set_info_map2), - cmp_map2, NULL); - nd_set->cookie2 = nd_fletcher64(info2, sizeof_nfit_set_info2(nr), 0); + sort(info2, nr, sizeof(*info2), cmp_map2, NULL); + nd_set->cookie2 = nd_fletcher64(info2, sizeof(*info2) * nr, 0); /* support v1.1 namespaces created with the wrong sort order */ - sort(&info->mapping[0], nr, sizeof(struct nfit_set_info_map), - cmp_map_compat, NULL); - nd_set->altcookie = nd_fletcher64(info, sizeof_nfit_set_info(nr), 0); + sort(info, nr, sizeof(*info), cmp_map_compat, NULL); + nd_set->altcookie = nd_fletcher64(info, sizeof(*info) * nr, 0); /* record the result of the sort for the mapping position */ for (i = 0; i < nr; i++) { - struct nfit_set_info_map2 *map2 = &info2->mapping[i]; + struct nfit_set_info2 *map2 = &info2[i]; int j; for (j = 0; j < nr; j++) { @@ -2299,274 +2338,6 @@ static int acpi_nfit_init_interleave_set(struct acpi_nfit_desc *acpi_desc, } ndr_desc->nd_set = nd_set; - devm_kfree(dev, info); - devm_kfree(dev, info2); - - return 0; -} - -static u64 to_interleave_offset(u64 offset, struct nfit_blk_mmio *mmio) -{ - struct acpi_nfit_interleave *idt = mmio->idt; - u32 sub_line_offset, line_index, line_offset; - u64 line_no, table_skip_count, table_offset; - - line_no = div_u64_rem(offset, mmio->line_size, &sub_line_offset); - table_skip_count = div_u64_rem(line_no, mmio->num_lines, &line_index); - line_offset = idt->line_offset[line_index] - * mmio->line_size; - table_offset = table_skip_count * mmio->table_size; - - return mmio->base_offset + line_offset + table_offset + sub_line_offset; -} - -static u32 read_blk_stat(struct nfit_blk *nfit_blk, unsigned int bw) -{ - struct nfit_blk_mmio *mmio = &nfit_blk->mmio[DCR]; - u64 offset = nfit_blk->stat_offset + mmio->size * bw; - const u32 STATUS_MASK = 0x80000037; - - if (mmio->num_lines) - offset = to_interleave_offset(offset, mmio); - - return readl(mmio->addr.base + offset) & STATUS_MASK; -} - -static void write_blk_ctl(struct nfit_blk *nfit_blk, unsigned int bw, - resource_size_t dpa, unsigned int len, unsigned int write) -{ - u64 cmd, offset; - struct nfit_blk_mmio *mmio = &nfit_blk->mmio[DCR]; - - enum { - BCW_OFFSET_MASK = (1ULL << 48)-1, - BCW_LEN_SHIFT = 48, - BCW_LEN_MASK = (1ULL << 8) - 1, - BCW_CMD_SHIFT = 56, - }; - - cmd = (dpa >> L1_CACHE_SHIFT) & BCW_OFFSET_MASK; - len = len >> L1_CACHE_SHIFT; - cmd |= ((u64) len & BCW_LEN_MASK) << BCW_LEN_SHIFT; - cmd |= ((u64) write) << BCW_CMD_SHIFT; - - offset = nfit_blk->cmd_offset + mmio->size * bw; - if (mmio->num_lines) - offset = to_interleave_offset(offset, mmio); - - writeq(cmd, mmio->addr.base + offset); - nvdimm_flush(nfit_blk->nd_region); - - if (nfit_blk->dimm_flags & NFIT_BLK_DCR_LATCH) - readq(mmio->addr.base + offset); -} - -static int acpi_nfit_blk_single_io(struct nfit_blk *nfit_blk, - resource_size_t dpa, void *iobuf, size_t len, int rw, - unsigned int lane) -{ - struct nfit_blk_mmio *mmio = &nfit_blk->mmio[BDW]; - unsigned int copied = 0; - u64 base_offset; - int rc; - - base_offset = nfit_blk->bdw_offset + dpa % L1_CACHE_BYTES - + lane * mmio->size; - write_blk_ctl(nfit_blk, lane, dpa, len, rw); - while (len) { - unsigned int c; - u64 offset; - - if (mmio->num_lines) { - u32 line_offset; - - offset = to_interleave_offset(base_offset + copied, - mmio); - div_u64_rem(offset, mmio->line_size, &line_offset); - c = min_t(size_t, len, mmio->line_size - line_offset); - } else { - offset = base_offset + nfit_blk->bdw_offset; - c = len; - } - - if (rw) - memcpy_flushcache(mmio->addr.aperture + offset, iobuf + copied, c); - else { - if (nfit_blk->dimm_flags & NFIT_BLK_READ_FLUSH) - arch_invalidate_pmem((void __force *) - mmio->addr.aperture + offset, c); - - memcpy(iobuf + copied, mmio->addr.aperture + offset, c); - } - - copied += c; - len -= c; - } - - if (rw) - nvdimm_flush(nfit_blk->nd_region); - - rc = read_blk_stat(nfit_blk, lane) ? -EIO : 0; - return rc; -} - -static int acpi_nfit_blk_region_do_io(struct nd_blk_region *ndbr, - resource_size_t dpa, void *iobuf, u64 len, int rw) -{ - struct nfit_blk *nfit_blk = nd_blk_region_provider_data(ndbr); - struct nfit_blk_mmio *mmio = &nfit_blk->mmio[BDW]; - struct nd_region *nd_region = nfit_blk->nd_region; - unsigned int lane, copied = 0; - int rc = 0; - - lane = nd_region_acquire_lane(nd_region); - while (len) { - u64 c = min(len, mmio->size); - - rc = acpi_nfit_blk_single_io(nfit_blk, dpa + copied, - iobuf + copied, c, rw, lane); - if (rc) - break; - - copied += c; - len -= c; - } - nd_region_release_lane(nd_region, lane); - - return rc; -} - -static int nfit_blk_init_interleave(struct nfit_blk_mmio *mmio, - struct acpi_nfit_interleave *idt, u16 interleave_ways) -{ - if (idt) { - mmio->num_lines = idt->line_count; - mmio->line_size = idt->line_size; - if (interleave_ways == 0) - return -ENXIO; - mmio->table_size = mmio->num_lines * interleave_ways - * mmio->line_size; - } - - return 0; -} - -static int acpi_nfit_blk_get_flags(struct nvdimm_bus_descriptor *nd_desc, - struct nvdimm *nvdimm, struct nfit_blk *nfit_blk) -{ - struct nd_cmd_dimm_flags flags; - int rc; - - memset(&flags, 0, sizeof(flags)); - rc = nd_desc->ndctl(nd_desc, nvdimm, ND_CMD_DIMM_FLAGS, &flags, - sizeof(flags), NULL); - - if (rc >= 0 && flags.status == 0) - nfit_blk->dimm_flags = flags.flags; - else if (rc == -ENOTTY) { - /* fall back to a conservative default */ - nfit_blk->dimm_flags = NFIT_BLK_DCR_LATCH | NFIT_BLK_READ_FLUSH; - rc = 0; - } else - rc = -ENXIO; - - return rc; -} - -static int acpi_nfit_blk_region_enable(struct nvdimm_bus *nvdimm_bus, - struct device *dev) -{ - struct nvdimm_bus_descriptor *nd_desc = to_nd_desc(nvdimm_bus); - struct nd_blk_region *ndbr = to_nd_blk_region(dev); - struct nfit_blk_mmio *mmio; - struct nfit_blk *nfit_blk; - struct nfit_mem *nfit_mem; - struct nvdimm *nvdimm; - int rc; - - nvdimm = nd_blk_region_to_dimm(ndbr); - nfit_mem = nvdimm_provider_data(nvdimm); - if (!nfit_mem || !nfit_mem->dcr || !nfit_mem->bdw) { - dev_dbg(dev, "missing%s%s%s\n", - nfit_mem ? "" : " nfit_mem", - (nfit_mem && nfit_mem->dcr) ? "" : " dcr", - (nfit_mem && nfit_mem->bdw) ? "" : " bdw"); - return -ENXIO; - } - - nfit_blk = devm_kzalloc(dev, sizeof(*nfit_blk), GFP_KERNEL); - if (!nfit_blk) - return -ENOMEM; - nd_blk_region_set_provider_data(ndbr, nfit_blk); - nfit_blk->nd_region = to_nd_region(dev); - - /* map block aperture memory */ - nfit_blk->bdw_offset = nfit_mem->bdw->offset; - mmio = &nfit_blk->mmio[BDW]; - mmio->addr.base = devm_nvdimm_memremap(dev, nfit_mem->spa_bdw->address, - nfit_mem->spa_bdw->length, nd_blk_memremap_flags(ndbr)); - if (!mmio->addr.base) { - dev_dbg(dev, "%s failed to map bdw\n", - nvdimm_name(nvdimm)); - return -ENOMEM; - } - mmio->size = nfit_mem->bdw->size; - mmio->base_offset = nfit_mem->memdev_bdw->region_offset; - mmio->idt = nfit_mem->idt_bdw; - mmio->spa = nfit_mem->spa_bdw; - rc = nfit_blk_init_interleave(mmio, nfit_mem->idt_bdw, - nfit_mem->memdev_bdw->interleave_ways); - if (rc) { - dev_dbg(dev, "%s failed to init bdw interleave\n", - nvdimm_name(nvdimm)); - return rc; - } - - /* map block control memory */ - nfit_blk->cmd_offset = nfit_mem->dcr->command_offset; - nfit_blk->stat_offset = nfit_mem->dcr->status_offset; - mmio = &nfit_blk->mmio[DCR]; - mmio->addr.base = devm_nvdimm_ioremap(dev, nfit_mem->spa_dcr->address, - nfit_mem->spa_dcr->length); - if (!mmio->addr.base) { - dev_dbg(dev, "%s failed to map dcr\n", - nvdimm_name(nvdimm)); - return -ENOMEM; - } - mmio->size = nfit_mem->dcr->window_size; - mmio->base_offset = nfit_mem->memdev_dcr->region_offset; - mmio->idt = nfit_mem->idt_dcr; - mmio->spa = nfit_mem->spa_dcr; - rc = nfit_blk_init_interleave(mmio, nfit_mem->idt_dcr, - nfit_mem->memdev_dcr->interleave_ways); - if (rc) { - dev_dbg(dev, "%s failed to init dcr interleave\n", - nvdimm_name(nvdimm)); - return rc; - } - - rc = acpi_nfit_blk_get_flags(nd_desc, nvdimm, nfit_blk); - if (rc < 0) { - dev_dbg(dev, "%s failed get DIMM flags\n", - nvdimm_name(nvdimm)); - return rc; - } - - if (nvdimm_has_flush(nfit_blk->nd_region) < 0) - dev_warn(dev, "unable to guarantee persistence of writes\n"); - - if (mmio->line_size == 0) - return 0; - - if ((u32) nfit_blk->cmd_offset % mmio->line_size - + 8 > mmio->line_size) { - dev_dbg(dev, "cmd_offset crosses interleave boundary\n"); - return -ENXIO; - } else if ((u32) nfit_blk->stat_offset % mmio->line_size - + 8 > mmio->line_size) { - dev_dbg(dev, "stat_offset crosses interleave boundary\n"); - return -ENXIO; - } return 0; } @@ -2613,7 +2384,10 @@ static int ars_start(struct acpi_nfit_desc *acpi_desc, if (rc < 0) return rc; - return cmd_rc; + if (cmd_rc < 0) + return cmd_rc; + set_bit(ARS_VALID, &acpi_desc->scrub_flags); + return 0; } static int ars_continue(struct acpi_nfit_desc *acpi_desc) @@ -2623,11 +2397,11 @@ static int ars_continue(struct acpi_nfit_desc *acpi_desc) struct nvdimm_bus_descriptor *nd_desc = &acpi_desc->nd_desc; struct nd_cmd_ars_status *ars_status = acpi_desc->ars_status; - memset(&ars_start, 0, sizeof(ars_start)); - ars_start.address = ars_status->restart_address; - ars_start.length = ars_status->restart_length; - ars_start.type = ars_status->type; - ars_start.flags = acpi_desc->ars_start_flags; + ars_start = (struct nd_cmd_ars_start) { + .address = ars_status->restart_address, + .length = ars_status->restart_length, + .type = ars_status->type, + }; rc = nd_desc->ndctl(nd_desc, NULL, ND_CMD_ARS_START, &ars_start, sizeof(ars_start), &cmd_rc); if (rc < 0) @@ -2706,6 +2480,17 @@ static int ars_status_process_records(struct acpi_nfit_desc *acpi_desc) */ if (ars_status->out_length < 44) return 0; + + /* + * Ignore potentially stale results that are only refreshed + * after a start-ARS event. + */ + if (!test_and_clear_bit(ARS_VALID, &acpi_desc->scrub_flags)) { + dev_dbg(acpi_desc->dev, "skip %d stale records\n", + ars_status->num_records); + return 0; + } + for (i = 0; i < ars_status->num_records; i++) { /* only process full records */ if (ars_status->out_length @@ -2773,9 +2558,6 @@ static int acpi_nfit_init_mapping(struct acpi_nfit_desc *acpi_desc, struct nvdimm *nvdimm = acpi_nfit_dimm_by_handle(acpi_desc, memdev->device_handle); struct acpi_nfit_system_address *spa = nfit_spa->spa; - struct nd_blk_region_desc *ndbr_desc; - struct nfit_mem *nfit_mem; - int rc; if (!nvdimm) { dev_err(acpi_desc->dev, "spa%d dimm: %#x not found\n", @@ -2790,30 +2572,6 @@ static int acpi_nfit_init_mapping(struct acpi_nfit_desc *acpi_desc, mapping->start = memdev->address; mapping->size = memdev->region_size; break; - case NFIT_SPA_DCR: - nfit_mem = nvdimm_provider_data(nvdimm); - if (!nfit_mem || !nfit_mem->bdw) { - dev_dbg(acpi_desc->dev, "spa%d %s missing bdw\n", - spa->range_index, nvdimm_name(nvdimm)); - break; - } - - mapping->size = nfit_mem->bdw->capacity; - mapping->start = nfit_mem->bdw->start_address; - ndr_desc->num_lanes = nfit_mem->bdw->windows; - ndr_desc->mapping = mapping; - ndr_desc->num_mappings = 1; - ndbr_desc = to_blk_region_desc(ndr_desc); - ndbr_desc->enable = acpi_nfit_blk_region_enable; - ndbr_desc->do_io = acpi_desc->blk_do_io; - rc = acpi_nfit_init_interleave_set(acpi_desc, ndr_desc, spa); - if (rc) - return rc; - nfit_spa->nd_region = nvdimm_blk_region_create(acpi_desc->nvdimm_bus, - ndr_desc); - if (!nfit_spa->nd_region) - return -ENOMEM; - break; } return 0; @@ -2839,8 +2597,7 @@ static int acpi_nfit_register_region(struct acpi_nfit_desc *acpi_desc, { static struct nd_mapping_desc mappings[ND_MAX_MAPPINGS]; struct acpi_nfit_system_address *spa = nfit_spa->spa; - struct nd_blk_region_desc ndbr_desc; - struct nd_region_desc *ndr_desc; + struct nd_region_desc *ndr_desc, _ndr_desc; struct nfit_memdev *nfit_memdev; struct nvdimm_bus *nvdimm_bus; struct resource res; @@ -2856,18 +2613,32 @@ static int acpi_nfit_register_region(struct acpi_nfit_desc *acpi_desc, memset(&res, 0, sizeof(res)); memset(&mappings, 0, sizeof(mappings)); - memset(&ndbr_desc, 0, sizeof(ndbr_desc)); + memset(&_ndr_desc, 0, sizeof(_ndr_desc)); res.start = spa->address; res.end = res.start + spa->length - 1; - ndr_desc = &ndbr_desc.ndr_desc; + ndr_desc = &_ndr_desc; ndr_desc->res = &res; ndr_desc->provider_data = nfit_spa; ndr_desc->attr_groups = acpi_nfit_region_attribute_groups; - if (spa->flags & ACPI_NFIT_PROXIMITY_VALID) - ndr_desc->numa_node = acpi_map_pxm_to_online_node( - spa->proximity_domain); - else + if (spa->flags & ACPI_NFIT_PROXIMITY_VALID) { + ndr_desc->numa_node = pxm_to_online_node(spa->proximity_domain); + ndr_desc->target_node = pxm_to_node(spa->proximity_domain); + } else { ndr_desc->numa_node = NUMA_NO_NODE; + ndr_desc->target_node = NUMA_NO_NODE; + } + + /* Fallback to address based numa information if node lookup failed */ + if (ndr_desc->numa_node == NUMA_NO_NODE) { + ndr_desc->numa_node = memory_add_physaddr_to_nid(spa->address); + dev_info(acpi_desc->dev, "changing numa node from %d to %d for nfit region [%pa-%pa]", + NUMA_NO_NODE, ndr_desc->numa_node, &res.start, &res.end); + } + if (ndr_desc->target_node == NUMA_NO_NODE) { + ndr_desc->target_node = phys_to_target_node(spa->address); + dev_info(acpi_desc->dev, "changing target node from %d to %d for nfit region [%pa-%pa]", + NUMA_NO_NODE, ndr_desc->target_node, &res.start, &res.end); + } /* * Persistence domain bits are hierarchical, if @@ -2883,6 +2654,9 @@ static int acpi_nfit_register_region(struct acpi_nfit_desc *acpi_desc, struct acpi_nfit_memory_map *memdev = nfit_memdev->memdev; struct nd_mapping_desc *mapping; + /* range index 0 == unmapped in SPA or invalid-SPA */ + if (memdev->range_index == 0 || spa->range_index == 0) + continue; if (memdev->range_index != spa->range_index) continue; if (count >= ND_MAX_MAPPINGS) { @@ -2976,14 +2750,16 @@ static int ars_register(struct acpi_nfit_desc *acpi_desc, { int rc; - if (no_init_ars || test_bit(ARS_FAILED, &nfit_spa->ars_state)) + if (test_bit(ARS_FAILED, &nfit_spa->ars_state)) return acpi_nfit_register_region(acpi_desc, nfit_spa); set_bit(ARS_REQ_SHORT, &nfit_spa->ars_state); - set_bit(ARS_REQ_LONG, &nfit_spa->ars_state); + if (!no_init_ars) + set_bit(ARS_REQ_LONG, &nfit_spa->ars_state); switch (acpi_nfit_query_poison(acpi_desc)) { case 0: + case -ENOSPC: case -EAGAIN: rc = ars_start(acpi_desc, nfit_spa, ARS_REQ_SHORT); /* shouldn't happen, try again later */ @@ -3008,7 +2784,6 @@ static int ars_register(struct acpi_nfit_desc *acpi_desc, break; case -EBUSY: case -ENOMEM: - case -ENOSPC: /* * BIOS was using ARS, wait for it to complete (or * resources to become available) and then perform our @@ -3043,7 +2818,7 @@ static unsigned int __acpi_nfit_scrub(struct acpi_nfit_desc *acpi_desc, lockdep_assert_held(&acpi_desc->init_mutex); - if (acpi_desc->cancel) + if (test_bit(ARS_CANCEL, &acpi_desc->scrub_flags)) return 0; if (query_rc == -EBUSY) { @@ -3117,7 +2892,7 @@ static void __sched_ars(struct acpi_nfit_desc *acpi_desc, unsigned int tmo) { lockdep_assert_held(&acpi_desc->init_mutex); - acpi_desc->scrub_busy = 1; + set_bit(ARS_BUSY, &acpi_desc->scrub_flags); /* note this should only be set from within the workqueue */ if (tmo) acpi_desc->scrub_tmo = tmo; @@ -3133,7 +2908,7 @@ static void notify_ars_done(struct acpi_nfit_desc *acpi_desc) { lockdep_assert_held(&acpi_desc->init_mutex); - acpi_desc->scrub_busy = 0; + clear_bit(ARS_BUSY, &acpi_desc->scrub_flags); acpi_desc->scrub_count++; if (acpi_desc->scrub_count_state) sysfs_notify_dirent(acpi_desc->scrub_count_state); @@ -3154,6 +2929,7 @@ static void acpi_nfit_scrub(struct work_struct *work) else notify_ars_done(acpi_desc); memset(acpi_desc->ars_status, 0, acpi_desc->max_ars); + clear_bit(ARS_POLL, &acpi_desc->scrub_flags); mutex_unlock(&acpi_desc->init_mutex); } @@ -3186,8 +2962,9 @@ 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) { switch (nfit_spa_type(nfit_spa->spa)) { case NFIT_SPA_VOLATILE: @@ -3197,7 +2974,7 @@ 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: @@ -3205,6 +2982,13 @@ 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 */ @@ -3223,8 +3007,10 @@ 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; } @@ -3397,7 +3183,10 @@ 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) { @@ -3407,10 +3196,16 @@ static int acpi_nfit_clear_to_send(struct nvdimm_bus_descriptor *nd_desc, if (nvdimm && cmd == ND_CMD_CALL && call_pkg->nd_family == NVDIMM_FAMILY_INTEL) { func = call_pkg->nd_command; - if ((1 << func) & NVDIMM_INTEL_SECURITY_CMDMASK) + if (func > NVDIMM_CMD_MAX || + (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); } @@ -3422,7 +3217,7 @@ int acpi_nfit_ars_rescan(struct acpi_nfit_desc *acpi_desc, struct nfit_spa *nfit_spa; mutex_lock(&acpi_desc->init_mutex); - if (acpi_desc->cancel) { + if (test_bit(ARS_CANCEL, &acpi_desc->scrub_flags)) { mutex_unlock(&acpi_desc->init_mutex); return 0; } @@ -3459,7 +3254,6 @@ void acpi_nfit_desc_init(struct acpi_nfit_desc *acpi_desc, struct device *dev) dev_set_drvdata(dev, acpi_desc); acpi_desc->dev = dev; - acpi_desc->blk_do_io = acpi_nfit_blk_region_do_io; nd_desc = &acpi_desc->nd_desc; nd_desc->provider_name = "ACPI.NFIT"; nd_desc->module = THIS_MODULE; @@ -3487,6 +3281,23 @@ static void acpi_nfit_put_table(void *table) acpi_put_table(table); } +static void acpi_nfit_notify(acpi_handle handle, u32 event, void *data) +{ + struct acpi_device *adev = data; + + device_lock(&adev->dev); + __acpi_nfit_notify(&adev->dev, handle, event); + device_unlock(&adev->dev); +} + +static void acpi_nfit_remove_notify_handler(void *data) +{ + struct acpi_device *adev = data; + + acpi_dev_remove_notify_handler(adev, ACPI_DEVICE_NOTIFY, + acpi_nfit_notify); +} + void acpi_nfit_shutdown(void *data) { struct acpi_nfit_desc *acpi_desc = data; @@ -3501,9 +3312,9 @@ void acpi_nfit_shutdown(void *data) mutex_unlock(&acpi_desc_lock); mutex_lock(&acpi_desc->init_mutex); - acpi_desc->cancel = 1; - cancel_delayed_work_sync(&acpi_desc->dwork); + set_bit(ARS_CANCEL, &acpi_desc->scrub_flags); mutex_unlock(&acpi_desc->init_mutex); + cancel_delayed_work_sync(&acpi_desc->dwork); /* * Bounce the nvdimm bus lock to make sure any in-flight @@ -3527,6 +3338,16 @@ static int acpi_nfit_add(struct acpi_device *adev) acpi_size sz; int rc = 0; + rc = acpi_dev_install_notify_handler(adev, ACPI_DEVICE_NOTIFY, + acpi_nfit_notify, adev); + if (rc) + return rc; + + rc = devm_add_action_or_reset(dev, acpi_nfit_remove_notify_handler, + adev); + if (rc) + return rc; + status = acpi_get_table(ACPI_SIG_NFIT, 0, &tbl); if (ACPI_FAILURE(status)) { /* The NVDIMM root device allows OS to trigger enumeration of @@ -3573,13 +3394,8 @@ static int acpi_nfit_add(struct acpi_device *adev) if (rc) return rc; - return devm_add_action_or_reset(dev, acpi_nfit_shutdown, acpi_desc); -} -static int acpi_nfit_remove(struct acpi_device *adev) -{ - /* see acpi_nfit_unregister */ - return 0; + return devm_add_action_or_reset(dev, acpi_nfit_shutdown, acpi_desc); } static void acpi_nfit_update_notify(struct device *dev, acpi_handle handle) @@ -3652,13 +3468,6 @@ void __acpi_nfit_notify(struct device *dev, acpi_handle handle, u32 event) } EXPORT_SYMBOL_GPL(__acpi_nfit_notify); -static void acpi_nfit_notify(struct acpi_device *adev, u32 event) -{ - device_lock(&adev->dev); - __acpi_nfit_notify(&adev->dev, adev->handle, event); - device_unlock(&adev->dev); -} - static const struct acpi_device_id acpi_nfit_ids[] = { { "ACPI0012", 0 }, { "", 0 }, @@ -3670,8 +3479,6 @@ static struct acpi_driver acpi_nfit_driver = { .ids = acpi_nfit_ids, .ops = { .add = acpi_nfit_add, - .remove = acpi_nfit_remove, - .notify = acpi_nfit_notify, }, }; @@ -3680,10 +3487,10 @@ static __init int nfit_init(void) int ret; BUILD_BUG_ON(sizeof(struct acpi_table_nfit) != 40); - BUILD_BUG_ON(sizeof(struct acpi_nfit_system_address) != 56); + BUILD_BUG_ON(sizeof(struct acpi_nfit_system_address) != 64); BUILD_BUG_ON(sizeof(struct acpi_nfit_memory_map) != 48); - BUILD_BUG_ON(sizeof(struct acpi_nfit_interleave) != 20); - BUILD_BUG_ON(sizeof(struct acpi_nfit_smbios) != 9); + BUILD_BUG_ON(sizeof(struct acpi_nfit_interleave) != 16); + BUILD_BUG_ON(sizeof(struct acpi_nfit_smbios) != 8); BUILD_BUG_ON(sizeof(struct acpi_nfit_control_region) != 80); BUILD_BUG_ON(sizeof(struct acpi_nfit_data_region) != 40); BUILD_BUG_ON(sizeof(struct acpi_nfit_capabilities) != 16); @@ -3701,6 +3508,8 @@ static __init int nfit_init(void) guid_parse(UUID_NFIT_DIMM_N_HPE1, &nfit_uuid[NFIT_DEV_DIMM_N_HPE1]); 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) @@ -3727,5 +3536,6 @@ static __exit void nfit_exit(void) module_init(nfit_init); module_exit(nfit_exit); +MODULE_DESCRIPTION("ACPI NVDIMM Firmware Interface Table (NFIT) driver"); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Intel Corporation"); |