187252e1bSXiao Guangrong /* 287252e1bSXiao Guangrong * NVDIMM ACPI Implementation 387252e1bSXiao Guangrong * 487252e1bSXiao Guangrong * Copyright(C) 2015 Intel Corporation. 587252e1bSXiao Guangrong * 687252e1bSXiao Guangrong * Author: 787252e1bSXiao Guangrong * Xiao Guangrong <guangrong.xiao@linux.intel.com> 887252e1bSXiao Guangrong * 987252e1bSXiao Guangrong * NFIT is defined in ACPI 6.0: 5.2.25 NVDIMM Firmware Interface Table (NFIT) 1087252e1bSXiao Guangrong * and the DSM specification can be found at: 1187252e1bSXiao Guangrong * http://pmem.io/documents/NVDIMM_DSM_Interface_Example.pdf 1287252e1bSXiao Guangrong * 1387252e1bSXiao Guangrong * Currently, it only supports PMEM Virtualization. 1487252e1bSXiao Guangrong * 1587252e1bSXiao Guangrong * This library is free software; you can redistribute it and/or 1687252e1bSXiao Guangrong * modify it under the terms of the GNU Lesser General Public 1787252e1bSXiao Guangrong * License as published by the Free Software Foundation; either 1887252e1bSXiao Guangrong * version 2 of the License, or (at your option) any later version. 1987252e1bSXiao Guangrong * 2087252e1bSXiao Guangrong * This library is distributed in the hope that it will be useful, 2187252e1bSXiao Guangrong * but WITHOUT ANY WARRANTY; without even the implied warranty of 2287252e1bSXiao Guangrong * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 2387252e1bSXiao Guangrong * Lesser General Public License for more details. 2487252e1bSXiao Guangrong * 2587252e1bSXiao Guangrong * You should have received a copy of the GNU Lesser General Public 2687252e1bSXiao Guangrong * License along with this library; if not, see <http://www.gnu.org/licenses/> 2787252e1bSXiao Guangrong */ 2887252e1bSXiao Guangrong 29b6a0aa05SPeter Maydell #include "qemu/osdep.h" 3087252e1bSXiao Guangrong #include "hw/acpi/acpi.h" 3187252e1bSXiao Guangrong #include "hw/acpi/aml-build.h" 32b9951413SXiao Guangrong #include "hw/acpi/bios-linker-loader.h" 335fe79386SXiao Guangrong #include "hw/nvram/fw_cfg.h" 3487252e1bSXiao Guangrong #include "hw/mem/nvdimm.h" 35*3f350f6bSShivaprasad G Bhat #include "qemu/nvdimm-utils.h" 3687252e1bSXiao Guangrong 3787252e1bSXiao Guangrong #define NVDIMM_UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ 3887252e1bSXiao Guangrong { (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ 3987252e1bSXiao Guangrong (b) & 0xff, ((b) >> 8) & 0xff, (c) & 0xff, ((c) >> 8) & 0xff, \ 4087252e1bSXiao Guangrong (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) } 4187252e1bSXiao Guangrong 4287252e1bSXiao Guangrong /* 4387252e1bSXiao Guangrong * define Byte Addressable Persistent Memory (PM) Region according to 4487252e1bSXiao Guangrong * ACPI 6.0: 5.2.25.1 System Physical Address Range Structure. 4587252e1bSXiao Guangrong */ 4687252e1bSXiao Guangrong static const uint8_t nvdimm_nfit_spa_uuid[] = 4787252e1bSXiao Guangrong NVDIMM_UUID_LE(0x66f0d379, 0xb4f3, 0x4074, 0xac, 0x43, 0x0d, 0x33, 4887252e1bSXiao Guangrong 0x18, 0xb7, 0x8c, 0xdb); 4987252e1bSXiao Guangrong 5087252e1bSXiao Guangrong /* 5187252e1bSXiao Guangrong * NVDIMM Firmware Interface Table 5287252e1bSXiao Guangrong * @signature: "NFIT" 5387252e1bSXiao Guangrong * 5487252e1bSXiao Guangrong * It provides information that allows OSPM to enumerate NVDIMM present in 5587252e1bSXiao Guangrong * the platform and associate system physical address ranges created by the 5687252e1bSXiao Guangrong * NVDIMMs. 5787252e1bSXiao Guangrong * 5887252e1bSXiao Guangrong * It is defined in ACPI 6.0: 5.2.25 NVDIMM Firmware Interface Table (NFIT) 5987252e1bSXiao Guangrong */ 6087252e1bSXiao Guangrong struct NvdimmNfitHeader { 6187252e1bSXiao Guangrong ACPI_TABLE_HEADER_DEF 6287252e1bSXiao Guangrong uint32_t reserved; 6387252e1bSXiao Guangrong } QEMU_PACKED; 6487252e1bSXiao Guangrong typedef struct NvdimmNfitHeader NvdimmNfitHeader; 6587252e1bSXiao Guangrong 6687252e1bSXiao Guangrong /* 6787252e1bSXiao Guangrong * define NFIT structures according to ACPI 6.0: 5.2.25 NVDIMM Firmware 6887252e1bSXiao Guangrong * Interface Table (NFIT). 6987252e1bSXiao Guangrong */ 7087252e1bSXiao Guangrong 7187252e1bSXiao Guangrong /* 7287252e1bSXiao Guangrong * System Physical Address Range Structure 7387252e1bSXiao Guangrong * 7487252e1bSXiao Guangrong * It describes the system physical address ranges occupied by NVDIMMs and 7587252e1bSXiao Guangrong * the types of the regions. 7687252e1bSXiao Guangrong */ 7787252e1bSXiao Guangrong struct NvdimmNfitSpa { 7887252e1bSXiao Guangrong uint16_t type; 7987252e1bSXiao Guangrong uint16_t length; 8087252e1bSXiao Guangrong uint16_t spa_index; 8187252e1bSXiao Guangrong uint16_t flags; 8287252e1bSXiao Guangrong uint32_t reserved; 8387252e1bSXiao Guangrong uint32_t proximity_domain; 8487252e1bSXiao Guangrong uint8_t type_guid[16]; 8587252e1bSXiao Guangrong uint64_t spa_base; 8687252e1bSXiao Guangrong uint64_t spa_length; 8787252e1bSXiao Guangrong uint64_t mem_attr; 8887252e1bSXiao Guangrong } QEMU_PACKED; 8987252e1bSXiao Guangrong typedef struct NvdimmNfitSpa NvdimmNfitSpa; 9087252e1bSXiao Guangrong 9187252e1bSXiao Guangrong /* 9287252e1bSXiao Guangrong * Memory Device to System Physical Address Range Mapping Structure 9387252e1bSXiao Guangrong * 9487252e1bSXiao Guangrong * It enables identifying each NVDIMM region and the corresponding SPA 9587252e1bSXiao Guangrong * describing the memory interleave 9687252e1bSXiao Guangrong */ 9787252e1bSXiao Guangrong struct NvdimmNfitMemDev { 9887252e1bSXiao Guangrong uint16_t type; 9987252e1bSXiao Guangrong uint16_t length; 10087252e1bSXiao Guangrong uint32_t nfit_handle; 10187252e1bSXiao Guangrong uint16_t phys_id; 10287252e1bSXiao Guangrong uint16_t region_id; 10387252e1bSXiao Guangrong uint16_t spa_index; 10487252e1bSXiao Guangrong uint16_t dcr_index; 10587252e1bSXiao Guangrong uint64_t region_len; 10687252e1bSXiao Guangrong uint64_t region_offset; 10787252e1bSXiao Guangrong uint64_t region_dpa; 10887252e1bSXiao Guangrong uint16_t interleave_index; 10987252e1bSXiao Guangrong uint16_t interleave_ways; 11087252e1bSXiao Guangrong uint16_t flags; 11187252e1bSXiao Guangrong uint16_t reserved; 11287252e1bSXiao Guangrong } QEMU_PACKED; 11387252e1bSXiao Guangrong typedef struct NvdimmNfitMemDev NvdimmNfitMemDev; 11487252e1bSXiao Guangrong 115cb836434SHaozhong Zhang #define ACPI_NFIT_MEM_NOT_ARMED (1 << 3) 116cb836434SHaozhong Zhang 11787252e1bSXiao Guangrong /* 11887252e1bSXiao Guangrong * NVDIMM Control Region Structure 11987252e1bSXiao Guangrong * 12087252e1bSXiao Guangrong * It describes the NVDIMM and if applicable, Block Control Window. 12187252e1bSXiao Guangrong */ 12287252e1bSXiao Guangrong struct NvdimmNfitControlRegion { 12387252e1bSXiao Guangrong uint16_t type; 12487252e1bSXiao Guangrong uint16_t length; 12587252e1bSXiao Guangrong uint16_t dcr_index; 12687252e1bSXiao Guangrong uint16_t vendor_id; 12787252e1bSXiao Guangrong uint16_t device_id; 12887252e1bSXiao Guangrong uint16_t revision_id; 12987252e1bSXiao Guangrong uint16_t sub_vendor_id; 13087252e1bSXiao Guangrong uint16_t sub_device_id; 13187252e1bSXiao Guangrong uint16_t sub_revision_id; 13287252e1bSXiao Guangrong uint8_t reserved[6]; 13387252e1bSXiao Guangrong uint32_t serial_number; 13487252e1bSXiao Guangrong uint16_t fic; 13587252e1bSXiao Guangrong uint16_t num_bcw; 13687252e1bSXiao Guangrong uint64_t bcw_size; 13787252e1bSXiao Guangrong uint64_t cmd_offset; 13887252e1bSXiao Guangrong uint64_t cmd_size; 13987252e1bSXiao Guangrong uint64_t status_offset; 14087252e1bSXiao Guangrong uint64_t status_size; 14187252e1bSXiao Guangrong uint16_t flags; 14287252e1bSXiao Guangrong uint8_t reserved2[6]; 14387252e1bSXiao Guangrong } QEMU_PACKED; 14487252e1bSXiao Guangrong typedef struct NvdimmNfitControlRegion NvdimmNfitControlRegion; 14587252e1bSXiao Guangrong 14687252e1bSXiao Guangrong /* 1479ab3aad2SRoss Zwisler * NVDIMM Platform Capabilities Structure 1489ab3aad2SRoss Zwisler * 1499ab3aad2SRoss Zwisler * Defined in section 5.2.25.9 of ACPI 6.2 Errata A, September 2017 1509ab3aad2SRoss Zwisler */ 1519ab3aad2SRoss Zwisler struct NvdimmNfitPlatformCaps { 1529ab3aad2SRoss Zwisler uint16_t type; 1539ab3aad2SRoss Zwisler uint16_t length; 1549ab3aad2SRoss Zwisler uint8_t highest_cap; 1559ab3aad2SRoss Zwisler uint8_t reserved[3]; 1569ab3aad2SRoss Zwisler uint32_t capabilities; 1579ab3aad2SRoss Zwisler uint8_t reserved2[4]; 1589ab3aad2SRoss Zwisler } QEMU_PACKED; 1599ab3aad2SRoss Zwisler typedef struct NvdimmNfitPlatformCaps NvdimmNfitPlatformCaps; 1609ab3aad2SRoss Zwisler 1619ab3aad2SRoss Zwisler /* 16287252e1bSXiao Guangrong * Module serial number is a unique number for each device. We use the 16387252e1bSXiao Guangrong * slot id of NVDIMM device to generate this number so that each device 16487252e1bSXiao Guangrong * associates with a different number. 16587252e1bSXiao Guangrong * 16687252e1bSXiao Guangrong * 0x123456 is a magic number we arbitrarily chose. 16787252e1bSXiao Guangrong */ 16887252e1bSXiao Guangrong static uint32_t nvdimm_slot_to_sn(int slot) 16987252e1bSXiao Guangrong { 17087252e1bSXiao Guangrong return 0x123456 + slot; 17187252e1bSXiao Guangrong } 17287252e1bSXiao Guangrong 17387252e1bSXiao Guangrong /* 17487252e1bSXiao Guangrong * handle is used to uniquely associate nfit_memdev structure with NVDIMM 17587252e1bSXiao Guangrong * ACPI device - nfit_memdev.nfit_handle matches with the value returned 17687252e1bSXiao Guangrong * by ACPI device _ADR method. 17787252e1bSXiao Guangrong * 17887252e1bSXiao Guangrong * We generate the handle with the slot id of NVDIMM device and reserve 17987252e1bSXiao Guangrong * 0 for NVDIMM root device. 18087252e1bSXiao Guangrong */ 18187252e1bSXiao Guangrong static uint32_t nvdimm_slot_to_handle(int slot) 18287252e1bSXiao Guangrong { 18387252e1bSXiao Guangrong return slot + 1; 18487252e1bSXiao Guangrong } 18587252e1bSXiao Guangrong 18687252e1bSXiao Guangrong /* 18787252e1bSXiao Guangrong * index uniquely identifies the structure, 0 is reserved which indicates 18887252e1bSXiao Guangrong * that the structure is not valid or the associated structure is not 18987252e1bSXiao Guangrong * present. 19087252e1bSXiao Guangrong * 19187252e1bSXiao Guangrong * Each NVDIMM device needs two indexes, one for nfit_spa and another for 19287252e1bSXiao Guangrong * nfit_dc which are generated by the slot id of NVDIMM device. 19387252e1bSXiao Guangrong */ 19487252e1bSXiao Guangrong static uint16_t nvdimm_slot_to_spa_index(int slot) 19587252e1bSXiao Guangrong { 19687252e1bSXiao Guangrong return (slot + 1) << 1; 19787252e1bSXiao Guangrong } 19887252e1bSXiao Guangrong 19987252e1bSXiao Guangrong /* See the comments of nvdimm_slot_to_spa_index(). */ 20087252e1bSXiao Guangrong static uint32_t nvdimm_slot_to_dcr_index(int slot) 20187252e1bSXiao Guangrong { 20287252e1bSXiao Guangrong return nvdimm_slot_to_spa_index(slot) + 1; 20387252e1bSXiao Guangrong } 20487252e1bSXiao Guangrong 2055797dcdcSXiao Guangrong static NVDIMMDevice *nvdimm_get_device_by_handle(uint32_t handle) 2065797dcdcSXiao Guangrong { 2075797dcdcSXiao Guangrong NVDIMMDevice *nvdimm = NULL; 208cf7c0ff5SXiao Guangrong GSList *list, *device_list = nvdimm_get_device_list(); 2095797dcdcSXiao Guangrong 2105797dcdcSXiao Guangrong for (list = device_list; list; list = list->next) { 2115797dcdcSXiao Guangrong NVDIMMDevice *nvd = list->data; 2125797dcdcSXiao Guangrong int slot = object_property_get_int(OBJECT(nvd), PC_DIMM_SLOT_PROP, 2135797dcdcSXiao Guangrong NULL); 2145797dcdcSXiao Guangrong 2155797dcdcSXiao Guangrong if (nvdimm_slot_to_handle(slot) == handle) { 2165797dcdcSXiao Guangrong nvdimm = nvd; 2175797dcdcSXiao Guangrong break; 2185797dcdcSXiao Guangrong } 2195797dcdcSXiao Guangrong } 2205797dcdcSXiao Guangrong 2215797dcdcSXiao Guangrong g_slist_free(device_list); 2225797dcdcSXiao Guangrong return nvdimm; 2235797dcdcSXiao Guangrong } 2245797dcdcSXiao Guangrong 22587252e1bSXiao Guangrong /* ACPI 6.0: 5.2.25.1 System Physical Address Range Structure */ 22687252e1bSXiao Guangrong static void 22787252e1bSXiao Guangrong nvdimm_build_structure_spa(GArray *structures, DeviceState *dev) 22887252e1bSXiao Guangrong { 22987252e1bSXiao Guangrong NvdimmNfitSpa *nfit_spa; 2309ed442b8SMarc-André Lureau uint64_t addr = object_property_get_uint(OBJECT(dev), PC_DIMM_ADDR_PROP, 23187252e1bSXiao Guangrong NULL); 232b053ef61SMarc-André Lureau uint64_t size = object_property_get_uint(OBJECT(dev), PC_DIMM_SIZE_PROP, 23387252e1bSXiao Guangrong NULL); 2349ed442b8SMarc-André Lureau uint32_t node = object_property_get_uint(OBJECT(dev), PC_DIMM_NODE_PROP, 23587252e1bSXiao Guangrong NULL); 23687252e1bSXiao Guangrong int slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, 23787252e1bSXiao Guangrong NULL); 23887252e1bSXiao Guangrong 23987252e1bSXiao Guangrong nfit_spa = acpi_data_push(structures, sizeof(*nfit_spa)); 24087252e1bSXiao Guangrong 24187252e1bSXiao Guangrong nfit_spa->type = cpu_to_le16(0 /* System Physical Address Range 24287252e1bSXiao Guangrong Structure */); 24387252e1bSXiao Guangrong nfit_spa->length = cpu_to_le16(sizeof(*nfit_spa)); 24487252e1bSXiao Guangrong nfit_spa->spa_index = cpu_to_le16(nvdimm_slot_to_spa_index(slot)); 24587252e1bSXiao Guangrong 24687252e1bSXiao Guangrong /* 24787252e1bSXiao Guangrong * Control region is strict as all the device info, such as SN, index, 24887252e1bSXiao Guangrong * is associated with slot id. 24987252e1bSXiao Guangrong */ 25087252e1bSXiao Guangrong nfit_spa->flags = cpu_to_le16(1 /* Control region is strictly for 25187252e1bSXiao Guangrong management during hot add/online 25287252e1bSXiao Guangrong operation */ | 25387252e1bSXiao Guangrong 2 /* Data in Proximity Domain field is 25487252e1bSXiao Guangrong valid*/); 25587252e1bSXiao Guangrong 25687252e1bSXiao Guangrong /* NUMA node. */ 25787252e1bSXiao Guangrong nfit_spa->proximity_domain = cpu_to_le32(node); 25887252e1bSXiao Guangrong /* the region reported as PMEM. */ 25987252e1bSXiao Guangrong memcpy(nfit_spa->type_guid, nvdimm_nfit_spa_uuid, 26087252e1bSXiao Guangrong sizeof(nvdimm_nfit_spa_uuid)); 26187252e1bSXiao Guangrong 26287252e1bSXiao Guangrong nfit_spa->spa_base = cpu_to_le64(addr); 26387252e1bSXiao Guangrong nfit_spa->spa_length = cpu_to_le64(size); 26487252e1bSXiao Guangrong 26587252e1bSXiao Guangrong /* It is the PMEM and can be cached as writeback. */ 26687252e1bSXiao Guangrong nfit_spa->mem_attr = cpu_to_le64(0x8ULL /* EFI_MEMORY_WB */ | 26787252e1bSXiao Guangrong 0x8000ULL /* EFI_MEMORY_NV */); 26887252e1bSXiao Guangrong } 26987252e1bSXiao Guangrong 27087252e1bSXiao Guangrong /* 27187252e1bSXiao Guangrong * ACPI 6.0: 5.2.25.2 Memory Device to System Physical Address Range Mapping 27287252e1bSXiao Guangrong * Structure 27387252e1bSXiao Guangrong */ 27487252e1bSXiao Guangrong static void 27587252e1bSXiao Guangrong nvdimm_build_structure_memdev(GArray *structures, DeviceState *dev) 27687252e1bSXiao Guangrong { 27787252e1bSXiao Guangrong NvdimmNfitMemDev *nfit_memdev; 278cb836434SHaozhong Zhang NVDIMMDevice *nvdimm = NVDIMM(OBJECT(dev)); 279b053ef61SMarc-André Lureau uint64_t size = object_property_get_uint(OBJECT(dev), PC_DIMM_SIZE_PROP, 28087252e1bSXiao Guangrong NULL); 28187252e1bSXiao Guangrong int slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, 28287252e1bSXiao Guangrong NULL); 28387252e1bSXiao Guangrong uint32_t handle = nvdimm_slot_to_handle(slot); 28487252e1bSXiao Guangrong 28587252e1bSXiao Guangrong nfit_memdev = acpi_data_push(structures, sizeof(*nfit_memdev)); 28687252e1bSXiao Guangrong 28787252e1bSXiao Guangrong nfit_memdev->type = cpu_to_le16(1 /* Memory Device to System Address 28887252e1bSXiao Guangrong Range Map Structure*/); 28987252e1bSXiao Guangrong nfit_memdev->length = cpu_to_le16(sizeof(*nfit_memdev)); 29087252e1bSXiao Guangrong nfit_memdev->nfit_handle = cpu_to_le32(handle); 29187252e1bSXiao Guangrong 29287252e1bSXiao Guangrong /* 29387252e1bSXiao Guangrong * associate memory device with System Physical Address Range 29487252e1bSXiao Guangrong * Structure. 29587252e1bSXiao Guangrong */ 29687252e1bSXiao Guangrong nfit_memdev->spa_index = cpu_to_le16(nvdimm_slot_to_spa_index(slot)); 29787252e1bSXiao Guangrong /* associate memory device with Control Region Structure. */ 29887252e1bSXiao Guangrong nfit_memdev->dcr_index = cpu_to_le16(nvdimm_slot_to_dcr_index(slot)); 29987252e1bSXiao Guangrong 30087252e1bSXiao Guangrong /* The memory region on the device. */ 30187252e1bSXiao Guangrong nfit_memdev->region_len = cpu_to_le64(size); 3026ab0c4bdSXiao Guangrong /* The device address starts from 0. */ 3036ab0c4bdSXiao Guangrong nfit_memdev->region_dpa = cpu_to_le64(0); 30487252e1bSXiao Guangrong 30587252e1bSXiao Guangrong /* Only one interleave for PMEM. */ 30687252e1bSXiao Guangrong nfit_memdev->interleave_ways = cpu_to_le16(1); 307cb836434SHaozhong Zhang 308cb836434SHaozhong Zhang if (nvdimm->unarmed) { 309cb836434SHaozhong Zhang nfit_memdev->flags |= cpu_to_le16(ACPI_NFIT_MEM_NOT_ARMED); 310cb836434SHaozhong Zhang } 31187252e1bSXiao Guangrong } 31287252e1bSXiao Guangrong 31387252e1bSXiao Guangrong /* 31487252e1bSXiao Guangrong * ACPI 6.0: 5.2.25.5 NVDIMM Control Region Structure. 31587252e1bSXiao Guangrong */ 31687252e1bSXiao Guangrong static void nvdimm_build_structure_dcr(GArray *structures, DeviceState *dev) 31787252e1bSXiao Guangrong { 31887252e1bSXiao Guangrong NvdimmNfitControlRegion *nfit_dcr; 31987252e1bSXiao Guangrong int slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, 32087252e1bSXiao Guangrong NULL); 32187252e1bSXiao Guangrong uint32_t sn = nvdimm_slot_to_sn(slot); 32287252e1bSXiao Guangrong 32387252e1bSXiao Guangrong nfit_dcr = acpi_data_push(structures, sizeof(*nfit_dcr)); 32487252e1bSXiao Guangrong 32587252e1bSXiao Guangrong nfit_dcr->type = cpu_to_le16(4 /* NVDIMM Control Region Structure */); 32687252e1bSXiao Guangrong nfit_dcr->length = cpu_to_le16(sizeof(*nfit_dcr)); 32787252e1bSXiao Guangrong nfit_dcr->dcr_index = cpu_to_le16(nvdimm_slot_to_dcr_index(slot)); 32887252e1bSXiao Guangrong 32987252e1bSXiao Guangrong /* vendor: Intel. */ 33087252e1bSXiao Guangrong nfit_dcr->vendor_id = cpu_to_le16(0x8086); 33187252e1bSXiao Guangrong nfit_dcr->device_id = cpu_to_le16(1); 33287252e1bSXiao Guangrong 33387252e1bSXiao Guangrong /* The _DSM method is following Intel's DSM specification. */ 33487252e1bSXiao Guangrong nfit_dcr->revision_id = cpu_to_le16(1 /* Current Revision supported 33587252e1bSXiao Guangrong in ACPI 6.0 is 1. */); 33687252e1bSXiao Guangrong nfit_dcr->serial_number = cpu_to_le32(sn); 33720fdef58SHaozhong Zhang nfit_dcr->fic = cpu_to_le16(0x301 /* Format Interface Code: 33820fdef58SHaozhong Zhang Byte addressable, no energy backed. 33920fdef58SHaozhong Zhang See ACPI 6.2, sect 5.2.25.6 and 34020fdef58SHaozhong Zhang JEDEC Annex L Release 3. */); 34187252e1bSXiao Guangrong } 34287252e1bSXiao Guangrong 3439ab3aad2SRoss Zwisler /* 3449ab3aad2SRoss Zwisler * ACPI 6.2 Errata A: 5.2.25.9 NVDIMM Platform Capabilities Structure 3459ab3aad2SRoss Zwisler */ 3469ab3aad2SRoss Zwisler static void 3479ab3aad2SRoss Zwisler nvdimm_build_structure_caps(GArray *structures, uint32_t capabilities) 3489ab3aad2SRoss Zwisler { 3499ab3aad2SRoss Zwisler NvdimmNfitPlatformCaps *nfit_caps; 3509ab3aad2SRoss Zwisler 3519ab3aad2SRoss Zwisler nfit_caps = acpi_data_push(structures, sizeof(*nfit_caps)); 3529ab3aad2SRoss Zwisler 3539ab3aad2SRoss Zwisler nfit_caps->type = cpu_to_le16(7 /* NVDIMM Platform Capabilities */); 3549ab3aad2SRoss Zwisler nfit_caps->length = cpu_to_le16(sizeof(*nfit_caps)); 3559ab3aad2SRoss Zwisler nfit_caps->highest_cap = 31 - clz32(capabilities); 3569ab3aad2SRoss Zwisler nfit_caps->capabilities = cpu_to_le32(capabilities); 3579ab3aad2SRoss Zwisler } 3589ab3aad2SRoss Zwisler 359c1404bdeSEric Auger static GArray *nvdimm_build_device_structure(NVDIMMState *state) 36087252e1bSXiao Guangrong { 361cf7c0ff5SXiao Guangrong GSList *device_list = nvdimm_get_device_list(); 36287252e1bSXiao Guangrong GArray *structures = g_array_new(false, true /* clear */, 1); 36387252e1bSXiao Guangrong 36487252e1bSXiao Guangrong for (; device_list; device_list = device_list->next) { 36587252e1bSXiao Guangrong DeviceState *dev = device_list->data; 36687252e1bSXiao Guangrong 36787252e1bSXiao Guangrong /* build System Physical Address Range Structure. */ 36887252e1bSXiao Guangrong nvdimm_build_structure_spa(structures, dev); 36987252e1bSXiao Guangrong 37087252e1bSXiao Guangrong /* 37187252e1bSXiao Guangrong * build Memory Device to System Physical Address Range Mapping 37287252e1bSXiao Guangrong * Structure. 37387252e1bSXiao Guangrong */ 37487252e1bSXiao Guangrong nvdimm_build_structure_memdev(structures, dev); 37587252e1bSXiao Guangrong 37687252e1bSXiao Guangrong /* build NVDIMM Control Region Structure. */ 37787252e1bSXiao Guangrong nvdimm_build_structure_dcr(structures, dev); 37887252e1bSXiao Guangrong } 37975b0713eSXiao Guangrong g_slist_free(device_list); 38087252e1bSXiao Guangrong 38111c39b5cSRoss Zwisler if (state->persistence) { 38211c39b5cSRoss Zwisler nvdimm_build_structure_caps(structures, state->persistence); 3839ab3aad2SRoss Zwisler } 3849ab3aad2SRoss Zwisler 38587252e1bSXiao Guangrong return structures; 38687252e1bSXiao Guangrong } 38787252e1bSXiao Guangrong 38875b0713eSXiao Guangrong static void nvdimm_init_fit_buffer(NvdimmFitBuffer *fit_buf) 38975b0713eSXiao Guangrong { 39075b0713eSXiao Guangrong fit_buf->fit = g_array_new(false, true /* clear */, 1); 39175b0713eSXiao Guangrong } 39275b0713eSXiao Guangrong 393c1404bdeSEric Auger static void nvdimm_build_fit_buffer(NVDIMMState *state) 39475b0713eSXiao Guangrong { 3959ab3aad2SRoss Zwisler NvdimmFitBuffer *fit_buf = &state->fit_buf; 3969ab3aad2SRoss Zwisler 39775b0713eSXiao Guangrong g_array_free(fit_buf->fit, true); 3989ab3aad2SRoss Zwisler fit_buf->fit = nvdimm_build_device_structure(state); 39975b0713eSXiao Guangrong fit_buf->dirty = true; 40075b0713eSXiao Guangrong } 40175b0713eSXiao Guangrong 402c1404bdeSEric Auger void nvdimm_plug(NVDIMMState *state) 40375b0713eSXiao Guangrong { 4049ab3aad2SRoss Zwisler nvdimm_build_fit_buffer(state); 40575b0713eSXiao Guangrong } 40675b0713eSXiao Guangrong 407c1404bdeSEric Auger static void nvdimm_build_nfit(NVDIMMState *state, GArray *table_offsets, 4080e9b9edaSIgor Mammedov GArray *table_data, BIOSLinker *linker) 40987252e1bSXiao Guangrong { 41075b0713eSXiao Guangrong NvdimmFitBuffer *fit_buf = &state->fit_buf; 411c8e6c938SHaozhong Zhang unsigned int header; 41287252e1bSXiao Guangrong 41387252e1bSXiao Guangrong acpi_add_table(table_offsets, table_data); 41487252e1bSXiao Guangrong 41587252e1bSXiao Guangrong /* NFIT header. */ 416c8e6c938SHaozhong Zhang header = table_data->len; 417c8e6c938SHaozhong Zhang acpi_data_push(table_data, sizeof(NvdimmNfitHeader)); 41887252e1bSXiao Guangrong /* NVDIMM device structures. */ 41975b0713eSXiao Guangrong g_array_append_vals(table_data, fit_buf->fit->data, fit_buf->fit->len); 42087252e1bSXiao Guangrong 421c8e6c938SHaozhong Zhang build_header(linker, table_data, 422c8e6c938SHaozhong Zhang (void *)(table_data->data + header), "NFIT", 42375b0713eSXiao Guangrong sizeof(NvdimmNfitHeader) + fit_buf->fit->len, 1, NULL, NULL); 42487252e1bSXiao Guangrong } 42587252e1bSXiao Guangrong 426cb88ebd7SXiao Guangrong #define NVDIMM_DSM_MEMORY_SIZE 4096 427cb88ebd7SXiao Guangrong 42818c440e1SXiao Guangrong struct NvdimmDsmIn { 42918c440e1SXiao Guangrong uint32_t handle; 43018c440e1SXiao Guangrong uint32_t revision; 43118c440e1SXiao Guangrong uint32_t function; 43218c440e1SXiao Guangrong /* the remaining size in the page is used by arg3. */ 43318c440e1SXiao Guangrong union { 43435c5a52dSPaolo Bonzini uint8_t arg3[4084]; 43518c440e1SXiao Guangrong }; 43618c440e1SXiao Guangrong } QEMU_PACKED; 43718c440e1SXiao Guangrong typedef struct NvdimmDsmIn NvdimmDsmIn; 438cb88ebd7SXiao Guangrong QEMU_BUILD_BUG_ON(sizeof(NvdimmDsmIn) != NVDIMM_DSM_MEMORY_SIZE); 43918c440e1SXiao Guangrong 44018c440e1SXiao Guangrong struct NvdimmDsmOut { 44118c440e1SXiao Guangrong /* the size of buffer filled by QEMU. */ 44218c440e1SXiao Guangrong uint32_t len; 44335c5a52dSPaolo Bonzini uint8_t data[4092]; 44418c440e1SXiao Guangrong } QEMU_PACKED; 44518c440e1SXiao Guangrong typedef struct NvdimmDsmOut NvdimmDsmOut; 446cb88ebd7SXiao Guangrong QEMU_BUILD_BUG_ON(sizeof(NvdimmDsmOut) != NVDIMM_DSM_MEMORY_SIZE); 44718c440e1SXiao Guangrong 448f7df22deSXiao Guangrong struct NvdimmDsmFunc0Out { 449f7df22deSXiao Guangrong /* the size of buffer filled by QEMU. */ 450f7df22deSXiao Guangrong uint32_t len; 451f7df22deSXiao Guangrong uint32_t supported_func; 452f7df22deSXiao Guangrong } QEMU_PACKED; 453f7df22deSXiao Guangrong typedef struct NvdimmDsmFunc0Out NvdimmDsmFunc0Out; 454f7df22deSXiao Guangrong 455f7df22deSXiao Guangrong struct NvdimmDsmFuncNoPayloadOut { 456f7df22deSXiao Guangrong /* the size of buffer filled by QEMU. */ 457f7df22deSXiao Guangrong uint32_t len; 458f7df22deSXiao Guangrong uint32_t func_ret_status; 459f7df22deSXiao Guangrong } QEMU_PACKED; 460f7df22deSXiao Guangrong typedef struct NvdimmDsmFuncNoPayloadOut NvdimmDsmFuncNoPayloadOut; 461f7df22deSXiao Guangrong 4625797dcdcSXiao Guangrong struct NvdimmFuncGetLabelSizeOut { 4635797dcdcSXiao Guangrong /* the size of buffer filled by QEMU. */ 4645797dcdcSXiao Guangrong uint32_t len; 4655797dcdcSXiao Guangrong uint32_t func_ret_status; /* return status code. */ 4665797dcdcSXiao Guangrong uint32_t label_size; /* the size of label data area. */ 4675797dcdcSXiao Guangrong /* 4685797dcdcSXiao Guangrong * Maximum size of the namespace label data length supported by 4695797dcdcSXiao Guangrong * the platform in Get/Set Namespace Label Data functions. 4705797dcdcSXiao Guangrong */ 4715797dcdcSXiao Guangrong uint32_t max_xfer; 4725797dcdcSXiao Guangrong } QEMU_PACKED; 4735797dcdcSXiao Guangrong typedef struct NvdimmFuncGetLabelSizeOut NvdimmFuncGetLabelSizeOut; 474cb88ebd7SXiao Guangrong QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncGetLabelSizeOut) > NVDIMM_DSM_MEMORY_SIZE); 4755797dcdcSXiao Guangrong 4762b9e57fcSXiao Guangrong struct NvdimmFuncGetLabelDataIn { 4772b9e57fcSXiao Guangrong uint32_t offset; /* the offset in the namespace label data area. */ 4782b9e57fcSXiao Guangrong uint32_t length; /* the size of data is to be read via the function. */ 4792b9e57fcSXiao Guangrong } QEMU_PACKED; 4802b9e57fcSXiao Guangrong typedef struct NvdimmFuncGetLabelDataIn NvdimmFuncGetLabelDataIn; 4812b9e57fcSXiao Guangrong QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncGetLabelDataIn) + 482cb88ebd7SXiao Guangrong offsetof(NvdimmDsmIn, arg3) > NVDIMM_DSM_MEMORY_SIZE); 4832b9e57fcSXiao Guangrong 4845797dcdcSXiao Guangrong struct NvdimmFuncGetLabelDataOut { 4855797dcdcSXiao Guangrong /* the size of buffer filled by QEMU. */ 4865797dcdcSXiao Guangrong uint32_t len; 4875797dcdcSXiao Guangrong uint32_t func_ret_status; /* return status code. */ 4885797dcdcSXiao Guangrong uint8_t out_buf[0]; /* the data got via Get Namesapce Label function. */ 4895797dcdcSXiao Guangrong } QEMU_PACKED; 4905797dcdcSXiao Guangrong typedef struct NvdimmFuncGetLabelDataOut NvdimmFuncGetLabelDataOut; 491cb88ebd7SXiao Guangrong QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncGetLabelDataOut) > NVDIMM_DSM_MEMORY_SIZE); 4925797dcdcSXiao Guangrong 4935797dcdcSXiao Guangrong struct NvdimmFuncSetLabelDataIn { 4945797dcdcSXiao Guangrong uint32_t offset; /* the offset in the namespace label data area. */ 4955797dcdcSXiao Guangrong uint32_t length; /* the size of data is to be written via the function. */ 4965797dcdcSXiao Guangrong uint8_t in_buf[0]; /* the data written to label data area. */ 4975797dcdcSXiao Guangrong } QEMU_PACKED; 4985797dcdcSXiao Guangrong typedef struct NvdimmFuncSetLabelDataIn NvdimmFuncSetLabelDataIn; 49914e44198SXiao Guangrong QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncSetLabelDataIn) + 500cb88ebd7SXiao Guangrong offsetof(NvdimmDsmIn, arg3) > NVDIMM_DSM_MEMORY_SIZE); 5015797dcdcSXiao Guangrong 502806864d9SXiao Guangrong struct NvdimmFuncReadFITIn { 5037adbce63SXiao Guangrong uint32_t offset; /* the offset into FIT buffer. */ 504806864d9SXiao Guangrong } QEMU_PACKED; 505806864d9SXiao Guangrong typedef struct NvdimmFuncReadFITIn NvdimmFuncReadFITIn; 506806864d9SXiao Guangrong QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncReadFITIn) + 507cb88ebd7SXiao Guangrong offsetof(NvdimmDsmIn, arg3) > NVDIMM_DSM_MEMORY_SIZE); 508806864d9SXiao Guangrong 509806864d9SXiao Guangrong struct NvdimmFuncReadFITOut { 510806864d9SXiao Guangrong /* the size of buffer filled by QEMU. */ 511806864d9SXiao Guangrong uint32_t len; 512806864d9SXiao Guangrong uint32_t func_ret_status; /* return status code. */ 513806864d9SXiao Guangrong uint8_t fit[0]; /* the FIT data. */ 514806864d9SXiao Guangrong } QEMU_PACKED; 515806864d9SXiao Guangrong typedef struct NvdimmFuncReadFITOut NvdimmFuncReadFITOut; 516cb88ebd7SXiao Guangrong QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncReadFITOut) > NVDIMM_DSM_MEMORY_SIZE); 517806864d9SXiao Guangrong 518189f4d56SXiao Guangrong static void 519189f4d56SXiao Guangrong nvdimm_dsm_function0(uint32_t supported_func, hwaddr dsm_mem_addr) 520189f4d56SXiao Guangrong { 521189f4d56SXiao Guangrong NvdimmDsmFunc0Out func0 = { 522189f4d56SXiao Guangrong .len = cpu_to_le32(sizeof(func0)), 523189f4d56SXiao Guangrong .supported_func = cpu_to_le32(supported_func), 524189f4d56SXiao Guangrong }; 525189f4d56SXiao Guangrong cpu_physical_memory_write(dsm_mem_addr, &func0, sizeof(func0)); 526189f4d56SXiao Guangrong } 527189f4d56SXiao Guangrong 528189f4d56SXiao Guangrong static void 529189f4d56SXiao Guangrong nvdimm_dsm_no_payload(uint32_t func_ret_status, hwaddr dsm_mem_addr) 530189f4d56SXiao Guangrong { 531189f4d56SXiao Guangrong NvdimmDsmFuncNoPayloadOut out = { 532189f4d56SXiao Guangrong .len = cpu_to_le32(sizeof(out)), 533189f4d56SXiao Guangrong .func_ret_status = cpu_to_le32(func_ret_status), 534189f4d56SXiao Guangrong }; 535189f4d56SXiao Guangrong cpu_physical_memory_write(dsm_mem_addr, &out, sizeof(out)); 536189f4d56SXiao Guangrong } 537189f4d56SXiao Guangrong 538c2fa3075SXiao Guangrong #define NVDIMM_DSM_RET_STATUS_SUCCESS 0 /* Success */ 539c2fa3075SXiao Guangrong #define NVDIMM_DSM_RET_STATUS_UNSUPPORT 1 /* Not Supported */ 540c2fa3075SXiao Guangrong #define NVDIMM_DSM_RET_STATUS_NOMEMDEV 2 /* Non-Existing Memory Device */ 541c2fa3075SXiao Guangrong #define NVDIMM_DSM_RET_STATUS_INVALID 3 /* Invalid Input Parameters */ 542c2fa3075SXiao Guangrong #define NVDIMM_DSM_RET_STATUS_FIT_CHANGED 0x100 /* FIT Changed */ 543c2fa3075SXiao Guangrong 544806864d9SXiao Guangrong #define NVDIMM_QEMU_RSVD_HANDLE_ROOT 0x10000 545806864d9SXiao Guangrong 546806864d9SXiao Guangrong /* Read FIT data, defined in docs/specs/acpi_nvdimm.txt. */ 547c1404bdeSEric Auger static void nvdimm_dsm_func_read_fit(NVDIMMState *state, NvdimmDsmIn *in, 548806864d9SXiao Guangrong hwaddr dsm_mem_addr) 549806864d9SXiao Guangrong { 550806864d9SXiao Guangrong NvdimmFitBuffer *fit_buf = &state->fit_buf; 551806864d9SXiao Guangrong NvdimmFuncReadFITIn *read_fit; 552806864d9SXiao Guangrong NvdimmFuncReadFITOut *read_fit_out; 553806864d9SXiao Guangrong GArray *fit; 554806864d9SXiao Guangrong uint32_t read_len = 0, func_ret_status; 555806864d9SXiao Guangrong int size; 556806864d9SXiao Guangrong 557806864d9SXiao Guangrong read_fit = (NvdimmFuncReadFITIn *)in->arg3; 558435cc3e4SPeter Maydell read_fit->offset = le32_to_cpu(read_fit->offset); 559806864d9SXiao Guangrong 560806864d9SXiao Guangrong fit = fit_buf->fit; 561806864d9SXiao Guangrong 562806864d9SXiao Guangrong nvdimm_debug("Read FIT: offset %#x FIT size %#x Dirty %s.\n", 563806864d9SXiao Guangrong read_fit->offset, fit->len, fit_buf->dirty ? "Yes" : "No"); 564806864d9SXiao Guangrong 565806864d9SXiao Guangrong if (read_fit->offset > fit->len) { 566c2fa3075SXiao Guangrong func_ret_status = NVDIMM_DSM_RET_STATUS_INVALID; 567806864d9SXiao Guangrong goto exit; 568806864d9SXiao Guangrong } 569806864d9SXiao Guangrong 570806864d9SXiao Guangrong /* It is the first time to read FIT. */ 571806864d9SXiao Guangrong if (!read_fit->offset) { 572806864d9SXiao Guangrong fit_buf->dirty = false; 573806864d9SXiao Guangrong } else if (fit_buf->dirty) { /* FIT has been changed during RFIT. */ 574c2fa3075SXiao Guangrong func_ret_status = NVDIMM_DSM_RET_STATUS_FIT_CHANGED; 575806864d9SXiao Guangrong goto exit; 576806864d9SXiao Guangrong } 577806864d9SXiao Guangrong 578c2fa3075SXiao Guangrong func_ret_status = NVDIMM_DSM_RET_STATUS_SUCCESS; 579806864d9SXiao Guangrong read_len = MIN(fit->len - read_fit->offset, 580cb88ebd7SXiao Guangrong NVDIMM_DSM_MEMORY_SIZE - sizeof(NvdimmFuncReadFITOut)); 581806864d9SXiao Guangrong 582806864d9SXiao Guangrong exit: 583806864d9SXiao Guangrong size = sizeof(NvdimmFuncReadFITOut) + read_len; 584806864d9SXiao Guangrong read_fit_out = g_malloc(size); 585806864d9SXiao Guangrong 586806864d9SXiao Guangrong read_fit_out->len = cpu_to_le32(size); 587806864d9SXiao Guangrong read_fit_out->func_ret_status = cpu_to_le32(func_ret_status); 588806864d9SXiao Guangrong memcpy(read_fit_out->fit, fit->data + read_fit->offset, read_len); 589806864d9SXiao Guangrong 590806864d9SXiao Guangrong cpu_physical_memory_write(dsm_mem_addr, read_fit_out, size); 591806864d9SXiao Guangrong 592806864d9SXiao Guangrong g_free(read_fit_out); 593806864d9SXiao Guangrong } 594806864d9SXiao Guangrong 5955a33db78SXiao Guangrong static void 596c1404bdeSEric Auger nvdimm_dsm_handle_reserved_root_method(NVDIMMState *state, 5975a33db78SXiao Guangrong NvdimmDsmIn *in, hwaddr dsm_mem_addr) 598806864d9SXiao Guangrong { 599806864d9SXiao Guangrong switch (in->function) { 600806864d9SXiao Guangrong case 0x0: 601806864d9SXiao Guangrong nvdimm_dsm_function0(0x1 | 1 << 1 /* Read FIT */, dsm_mem_addr); 602806864d9SXiao Guangrong return; 603806864d9SXiao Guangrong case 0x1 /* Read FIT */: 604806864d9SXiao Guangrong nvdimm_dsm_func_read_fit(state, in, dsm_mem_addr); 605806864d9SXiao Guangrong return; 606806864d9SXiao Guangrong } 607806864d9SXiao Guangrong 608c2fa3075SXiao Guangrong nvdimm_dsm_no_payload(NVDIMM_DSM_RET_STATUS_UNSUPPORT, dsm_mem_addr); 609806864d9SXiao Guangrong } 610806864d9SXiao Guangrong 611189f4d56SXiao Guangrong static void nvdimm_dsm_root(NvdimmDsmIn *in, hwaddr dsm_mem_addr) 612189f4d56SXiao Guangrong { 613189f4d56SXiao Guangrong /* 614189f4d56SXiao Guangrong * function 0 is called to inquire which functions are supported by 615189f4d56SXiao Guangrong * OSPM 616189f4d56SXiao Guangrong */ 617189f4d56SXiao Guangrong if (!in->function) { 618189f4d56SXiao Guangrong nvdimm_dsm_function0(0 /* No function supported other than 619189f4d56SXiao Guangrong function 0 */, dsm_mem_addr); 620189f4d56SXiao Guangrong return; 621189f4d56SXiao Guangrong } 622189f4d56SXiao Guangrong 623189f4d56SXiao Guangrong /* No function except function 0 is supported yet. */ 624c2fa3075SXiao Guangrong nvdimm_dsm_no_payload(NVDIMM_DSM_RET_STATUS_UNSUPPORT, dsm_mem_addr); 625189f4d56SXiao Guangrong } 626189f4d56SXiao Guangrong 6275797dcdcSXiao Guangrong /* 6285797dcdcSXiao Guangrong * the max transfer size is the max size transferred by both a 6295797dcdcSXiao Guangrong * 'Get Namespace Label Data' function and a 'Set Namespace Label Data' 6305797dcdcSXiao Guangrong * function. 6315797dcdcSXiao Guangrong */ 6325797dcdcSXiao Guangrong static uint32_t nvdimm_get_max_xfer_label_size(void) 6335797dcdcSXiao Guangrong { 634cb88ebd7SXiao Guangrong uint32_t max_get_size, max_set_size, dsm_memory_size; 635cb88ebd7SXiao Guangrong 636cb88ebd7SXiao Guangrong dsm_memory_size = NVDIMM_DSM_MEMORY_SIZE; 6375797dcdcSXiao Guangrong 6385797dcdcSXiao Guangrong /* 6395797dcdcSXiao Guangrong * the max data ACPI can read one time which is transferred by 6405797dcdcSXiao Guangrong * the response of 'Get Namespace Label Data' function. 6415797dcdcSXiao Guangrong */ 6425797dcdcSXiao Guangrong max_get_size = dsm_memory_size - sizeof(NvdimmFuncGetLabelDataOut); 6435797dcdcSXiao Guangrong 6445797dcdcSXiao Guangrong /* 6455797dcdcSXiao Guangrong * the max data ACPI can write one time which is transferred by 6465797dcdcSXiao Guangrong * 'Set Namespace Label Data' function. 6475797dcdcSXiao Guangrong */ 6485797dcdcSXiao Guangrong max_set_size = dsm_memory_size - offsetof(NvdimmDsmIn, arg3) - 6495797dcdcSXiao Guangrong sizeof(NvdimmFuncSetLabelDataIn); 6505797dcdcSXiao Guangrong 6515797dcdcSXiao Guangrong return MIN(max_get_size, max_set_size); 6525797dcdcSXiao Guangrong } 6535797dcdcSXiao Guangrong 6545797dcdcSXiao Guangrong /* 6555797dcdcSXiao Guangrong * DSM Spec Rev1 4.4 Get Namespace Label Size (Function Index 4). 6565797dcdcSXiao Guangrong * 6575797dcdcSXiao Guangrong * It gets the size of Namespace Label data area and the max data size 6585797dcdcSXiao Guangrong * that Get/Set Namespace Label Data functions can transfer. 6595797dcdcSXiao Guangrong */ 6605797dcdcSXiao Guangrong static void nvdimm_dsm_label_size(NVDIMMDevice *nvdimm, hwaddr dsm_mem_addr) 6615797dcdcSXiao Guangrong { 6625797dcdcSXiao Guangrong NvdimmFuncGetLabelSizeOut label_size_out = { 6635797dcdcSXiao Guangrong .len = cpu_to_le32(sizeof(label_size_out)), 6645797dcdcSXiao Guangrong }; 6655797dcdcSXiao Guangrong uint32_t label_size, mxfer; 6665797dcdcSXiao Guangrong 6675797dcdcSXiao Guangrong label_size = nvdimm->label_size; 6685797dcdcSXiao Guangrong mxfer = nvdimm_get_max_xfer_label_size(); 6695797dcdcSXiao Guangrong 6705797dcdcSXiao Guangrong nvdimm_debug("label_size %#x, max_xfer %#x.\n", label_size, mxfer); 6715797dcdcSXiao Guangrong 672c2fa3075SXiao Guangrong label_size_out.func_ret_status = cpu_to_le32(NVDIMM_DSM_RET_STATUS_SUCCESS); 6735797dcdcSXiao Guangrong label_size_out.label_size = cpu_to_le32(label_size); 6745797dcdcSXiao Guangrong label_size_out.max_xfer = cpu_to_le32(mxfer); 6755797dcdcSXiao Guangrong 6765797dcdcSXiao Guangrong cpu_physical_memory_write(dsm_mem_addr, &label_size_out, 6775797dcdcSXiao Guangrong sizeof(label_size_out)); 6785797dcdcSXiao Guangrong } 6795797dcdcSXiao Guangrong 6802b9e57fcSXiao Guangrong static uint32_t nvdimm_rw_label_data_check(NVDIMMDevice *nvdimm, 6812b9e57fcSXiao Guangrong uint32_t offset, uint32_t length) 6822b9e57fcSXiao Guangrong { 683c2fa3075SXiao Guangrong uint32_t ret = NVDIMM_DSM_RET_STATUS_INVALID; 6842b9e57fcSXiao Guangrong 6852b9e57fcSXiao Guangrong if (offset + length < offset) { 6862b9e57fcSXiao Guangrong nvdimm_debug("offset %#x + length %#x is overflow.\n", offset, 6872b9e57fcSXiao Guangrong length); 6882b9e57fcSXiao Guangrong return ret; 6892b9e57fcSXiao Guangrong } 6902b9e57fcSXiao Guangrong 6912b9e57fcSXiao Guangrong if (nvdimm->label_size < offset + length) { 6922b9e57fcSXiao Guangrong nvdimm_debug("position %#x is beyond label data (len = %" PRIx64 ").\n", 6932b9e57fcSXiao Guangrong offset + length, nvdimm->label_size); 6942b9e57fcSXiao Guangrong return ret; 6952b9e57fcSXiao Guangrong } 6962b9e57fcSXiao Guangrong 6972b9e57fcSXiao Guangrong if (length > nvdimm_get_max_xfer_label_size()) { 6982b9e57fcSXiao Guangrong nvdimm_debug("length (%#x) is larger than max_xfer (%#x).\n", 6992b9e57fcSXiao Guangrong length, nvdimm_get_max_xfer_label_size()); 7002b9e57fcSXiao Guangrong return ret; 7012b9e57fcSXiao Guangrong } 7022b9e57fcSXiao Guangrong 703c2fa3075SXiao Guangrong return NVDIMM_DSM_RET_STATUS_SUCCESS; 7042b9e57fcSXiao Guangrong } 7052b9e57fcSXiao Guangrong 7062b9e57fcSXiao Guangrong /* 7072b9e57fcSXiao Guangrong * DSM Spec Rev1 4.5 Get Namespace Label Data (Function Index 5). 7082b9e57fcSXiao Guangrong */ 7092b9e57fcSXiao Guangrong static void nvdimm_dsm_get_label_data(NVDIMMDevice *nvdimm, NvdimmDsmIn *in, 7102b9e57fcSXiao Guangrong hwaddr dsm_mem_addr) 7112b9e57fcSXiao Guangrong { 7122b9e57fcSXiao Guangrong NVDIMMClass *nvc = NVDIMM_GET_CLASS(nvdimm); 7132b9e57fcSXiao Guangrong NvdimmFuncGetLabelDataIn *get_label_data; 7142b9e57fcSXiao Guangrong NvdimmFuncGetLabelDataOut *get_label_data_out; 7152b9e57fcSXiao Guangrong uint32_t status; 7162b9e57fcSXiao Guangrong int size; 7172b9e57fcSXiao Guangrong 7182b9e57fcSXiao Guangrong get_label_data = (NvdimmFuncGetLabelDataIn *)in->arg3; 719435cc3e4SPeter Maydell get_label_data->offset = le32_to_cpu(get_label_data->offset); 720435cc3e4SPeter Maydell get_label_data->length = le32_to_cpu(get_label_data->length); 7212b9e57fcSXiao Guangrong 7222b9e57fcSXiao Guangrong nvdimm_debug("Read Label Data: offset %#x length %#x.\n", 7232b9e57fcSXiao Guangrong get_label_data->offset, get_label_data->length); 7242b9e57fcSXiao Guangrong 7252b9e57fcSXiao Guangrong status = nvdimm_rw_label_data_check(nvdimm, get_label_data->offset, 7262b9e57fcSXiao Guangrong get_label_data->length); 727c2fa3075SXiao Guangrong if (status != NVDIMM_DSM_RET_STATUS_SUCCESS) { 7282b9e57fcSXiao Guangrong nvdimm_dsm_no_payload(status, dsm_mem_addr); 7292b9e57fcSXiao Guangrong return; 7302b9e57fcSXiao Guangrong } 7312b9e57fcSXiao Guangrong 7322b9e57fcSXiao Guangrong size = sizeof(*get_label_data_out) + get_label_data->length; 733cb88ebd7SXiao Guangrong assert(size <= NVDIMM_DSM_MEMORY_SIZE); 7342b9e57fcSXiao Guangrong get_label_data_out = g_malloc(size); 7352b9e57fcSXiao Guangrong 7362b9e57fcSXiao Guangrong get_label_data_out->len = cpu_to_le32(size); 737c2fa3075SXiao Guangrong get_label_data_out->func_ret_status = 738c2fa3075SXiao Guangrong cpu_to_le32(NVDIMM_DSM_RET_STATUS_SUCCESS); 7392b9e57fcSXiao Guangrong nvc->read_label_data(nvdimm, get_label_data_out->out_buf, 7402b9e57fcSXiao Guangrong get_label_data->length, get_label_data->offset); 7412b9e57fcSXiao Guangrong 7422b9e57fcSXiao Guangrong cpu_physical_memory_write(dsm_mem_addr, get_label_data_out, size); 7432b9e57fcSXiao Guangrong g_free(get_label_data_out); 7442b9e57fcSXiao Guangrong } 7452b9e57fcSXiao Guangrong 74614e44198SXiao Guangrong /* 74714e44198SXiao Guangrong * DSM Spec Rev1 4.6 Set Namespace Label Data (Function Index 6). 74814e44198SXiao Guangrong */ 74914e44198SXiao Guangrong static void nvdimm_dsm_set_label_data(NVDIMMDevice *nvdimm, NvdimmDsmIn *in, 75014e44198SXiao Guangrong hwaddr dsm_mem_addr) 75114e44198SXiao Guangrong { 75214e44198SXiao Guangrong NVDIMMClass *nvc = NVDIMM_GET_CLASS(nvdimm); 75314e44198SXiao Guangrong NvdimmFuncSetLabelDataIn *set_label_data; 75414e44198SXiao Guangrong uint32_t status; 75514e44198SXiao Guangrong 75614e44198SXiao Guangrong set_label_data = (NvdimmFuncSetLabelDataIn *)in->arg3; 75714e44198SXiao Guangrong 758435cc3e4SPeter Maydell set_label_data->offset = le32_to_cpu(set_label_data->offset); 759435cc3e4SPeter Maydell set_label_data->length = le32_to_cpu(set_label_data->length); 76014e44198SXiao Guangrong 76114e44198SXiao Guangrong nvdimm_debug("Write Label Data: offset %#x length %#x.\n", 76214e44198SXiao Guangrong set_label_data->offset, set_label_data->length); 76314e44198SXiao Guangrong 76414e44198SXiao Guangrong status = nvdimm_rw_label_data_check(nvdimm, set_label_data->offset, 76514e44198SXiao Guangrong set_label_data->length); 766c2fa3075SXiao Guangrong if (status != NVDIMM_DSM_RET_STATUS_SUCCESS) { 76714e44198SXiao Guangrong nvdimm_dsm_no_payload(status, dsm_mem_addr); 76814e44198SXiao Guangrong return; 76914e44198SXiao Guangrong } 77014e44198SXiao Guangrong 771cb88ebd7SXiao Guangrong assert(offsetof(NvdimmDsmIn, arg3) + sizeof(*set_label_data) + 772cb88ebd7SXiao Guangrong set_label_data->length <= NVDIMM_DSM_MEMORY_SIZE); 77314e44198SXiao Guangrong 77414e44198SXiao Guangrong nvc->write_label_data(nvdimm, set_label_data->in_buf, 77514e44198SXiao Guangrong set_label_data->length, set_label_data->offset); 776c2fa3075SXiao Guangrong nvdimm_dsm_no_payload(NVDIMM_DSM_RET_STATUS_SUCCESS, dsm_mem_addr); 77714e44198SXiao Guangrong } 77814e44198SXiao Guangrong 779189f4d56SXiao Guangrong static void nvdimm_dsm_device(NvdimmDsmIn *in, hwaddr dsm_mem_addr) 780189f4d56SXiao Guangrong { 7815797dcdcSXiao Guangrong NVDIMMDevice *nvdimm = nvdimm_get_device_by_handle(in->handle); 7825797dcdcSXiao Guangrong 783189f4d56SXiao Guangrong /* See the comments in nvdimm_dsm_root(). */ 784189f4d56SXiao Guangrong if (!in->function) { 7855797dcdcSXiao Guangrong uint32_t supported_func = 0; 7865797dcdcSXiao Guangrong 7875797dcdcSXiao Guangrong if (nvdimm && nvdimm->label_size) { 7885797dcdcSXiao Guangrong supported_func |= 0x1 /* Bit 0 indicates whether there is 7895797dcdcSXiao Guangrong support for any functions other 7905797dcdcSXiao Guangrong than function 0. */ | 7912b9e57fcSXiao Guangrong 1 << 4 /* Get Namespace Label Size */ | 79214e44198SXiao Guangrong 1 << 5 /* Get Namespace Label Data */ | 79314e44198SXiao Guangrong 1 << 6 /* Set Namespace Label Data */; 7945797dcdcSXiao Guangrong } 7955797dcdcSXiao Guangrong nvdimm_dsm_function0(supported_func, dsm_mem_addr); 796189f4d56SXiao Guangrong return; 797189f4d56SXiao Guangrong } 798189f4d56SXiao Guangrong 7995797dcdcSXiao Guangrong if (!nvdimm) { 800c2fa3075SXiao Guangrong nvdimm_dsm_no_payload(NVDIMM_DSM_RET_STATUS_NOMEMDEV, 8015797dcdcSXiao Guangrong dsm_mem_addr); 8025797dcdcSXiao Guangrong return; 8035797dcdcSXiao Guangrong } 8045797dcdcSXiao Guangrong 8055797dcdcSXiao Guangrong /* Encode DSM function according to DSM Spec Rev1. */ 8065797dcdcSXiao Guangrong switch (in->function) { 8075797dcdcSXiao Guangrong case 4 /* Get Namespace Label Size */: 8085797dcdcSXiao Guangrong if (nvdimm->label_size) { 8095797dcdcSXiao Guangrong nvdimm_dsm_label_size(nvdimm, dsm_mem_addr); 8105797dcdcSXiao Guangrong return; 8115797dcdcSXiao Guangrong } 8125797dcdcSXiao Guangrong break; 8132b9e57fcSXiao Guangrong case 5 /* Get Namespace Label Data */: 8142b9e57fcSXiao Guangrong if (nvdimm->label_size) { 8152b9e57fcSXiao Guangrong nvdimm_dsm_get_label_data(nvdimm, in, dsm_mem_addr); 8162b9e57fcSXiao Guangrong return; 8172b9e57fcSXiao Guangrong } 8182b9e57fcSXiao Guangrong break; 81914e44198SXiao Guangrong case 0x6 /* Set Namespace Label Data */: 82014e44198SXiao Guangrong if (nvdimm->label_size) { 82114e44198SXiao Guangrong nvdimm_dsm_set_label_data(nvdimm, in, dsm_mem_addr); 82214e44198SXiao Guangrong return; 82314e44198SXiao Guangrong } 82414e44198SXiao Guangrong break; 8255797dcdcSXiao Guangrong } 8265797dcdcSXiao Guangrong 827c2fa3075SXiao Guangrong nvdimm_dsm_no_payload(NVDIMM_DSM_RET_STATUS_UNSUPPORT, dsm_mem_addr); 828189f4d56SXiao Guangrong } 829189f4d56SXiao Guangrong 8305fe79386SXiao Guangrong static uint64_t 8315fe79386SXiao Guangrong nvdimm_dsm_read(void *opaque, hwaddr addr, unsigned size) 8325fe79386SXiao Guangrong { 833f7df22deSXiao Guangrong nvdimm_debug("BUG: we never read _DSM IO Port.\n"); 8345fe79386SXiao Guangrong return 0; 8355fe79386SXiao Guangrong } 8365fe79386SXiao Guangrong 8375fe79386SXiao Guangrong static void 8385fe79386SXiao Guangrong nvdimm_dsm_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) 8395fe79386SXiao Guangrong { 840c1404bdeSEric Auger NVDIMMState *state = opaque; 841f7df22deSXiao Guangrong NvdimmDsmIn *in; 842f7df22deSXiao Guangrong hwaddr dsm_mem_addr = val; 843f7df22deSXiao Guangrong 844f7df22deSXiao Guangrong nvdimm_debug("dsm memory address %#" HWADDR_PRIx ".\n", dsm_mem_addr); 845f7df22deSXiao Guangrong 846f7df22deSXiao Guangrong /* 847f7df22deSXiao Guangrong * The DSM memory is mapped to guest address space so an evil guest 848f7df22deSXiao Guangrong * can change its content while we are doing DSM emulation. Avoid 849f7df22deSXiao Guangrong * this by copying DSM memory to QEMU local memory. 850f7df22deSXiao Guangrong */ 85135c5a52dSPaolo Bonzini in = g_new(NvdimmDsmIn, 1); 85235c5a52dSPaolo Bonzini cpu_physical_memory_read(dsm_mem_addr, in, sizeof(*in)); 853f7df22deSXiao Guangrong 854435cc3e4SPeter Maydell in->revision = le32_to_cpu(in->revision); 855435cc3e4SPeter Maydell in->function = le32_to_cpu(in->function); 856435cc3e4SPeter Maydell in->handle = le32_to_cpu(in->handle); 857f7df22deSXiao Guangrong 858f7df22deSXiao Guangrong nvdimm_debug("Revision %#x Handler %#x Function %#x.\n", in->revision, 859f7df22deSXiao Guangrong in->handle, in->function); 860f7df22deSXiao Guangrong 861d15fc53fSXiao Guangrong if (in->revision != 0x1 /* Currently we only support DSM Spec Rev1. */) { 862d15fc53fSXiao Guangrong nvdimm_debug("Revision %#x is not supported, expect %#x.\n", 863d15fc53fSXiao Guangrong in->revision, 0x1); 864c2fa3075SXiao Guangrong nvdimm_dsm_no_payload(NVDIMM_DSM_RET_STATUS_UNSUPPORT, dsm_mem_addr); 865d15fc53fSXiao Guangrong goto exit; 866d15fc53fSXiao Guangrong } 867d15fc53fSXiao Guangrong 868806864d9SXiao Guangrong if (in->handle == NVDIMM_QEMU_RSVD_HANDLE_ROOT) { 8695a33db78SXiao Guangrong nvdimm_dsm_handle_reserved_root_method(state, in, dsm_mem_addr); 870806864d9SXiao Guangrong goto exit; 871806864d9SXiao Guangrong } 872806864d9SXiao Guangrong 873189f4d56SXiao Guangrong /* Handle 0 is reserved for NVDIMM Root Device. */ 874189f4d56SXiao Guangrong if (!in->handle) { 875189f4d56SXiao Guangrong nvdimm_dsm_root(in, dsm_mem_addr); 876189f4d56SXiao Guangrong goto exit; 877f7df22deSXiao Guangrong } 878f7df22deSXiao Guangrong 879189f4d56SXiao Guangrong nvdimm_dsm_device(in, dsm_mem_addr); 880189f4d56SXiao Guangrong 881189f4d56SXiao Guangrong exit: 882f7df22deSXiao Guangrong g_free(in); 8835fe79386SXiao Guangrong } 8845fe79386SXiao Guangrong 8855fe79386SXiao Guangrong static const MemoryRegionOps nvdimm_dsm_ops = { 8865fe79386SXiao Guangrong .read = nvdimm_dsm_read, 8875fe79386SXiao Guangrong .write = nvdimm_dsm_write, 8885fe79386SXiao Guangrong .endianness = DEVICE_LITTLE_ENDIAN, 8895fe79386SXiao Guangrong .valid = { 8905fe79386SXiao Guangrong .min_access_size = 4, 8915fe79386SXiao Guangrong .max_access_size = 4, 8925fe79386SXiao Guangrong }, 8935fe79386SXiao Guangrong }; 8945fe79386SXiao Guangrong 89575f27498SXiao Guangrong void nvdimm_acpi_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev) 89675f27498SXiao Guangrong { 89775f27498SXiao Guangrong if (dev->hotplugged) { 89875f27498SXiao Guangrong acpi_send_event(DEVICE(hotplug_dev), ACPI_NVDIMM_HOTPLUG_STATUS); 89975f27498SXiao Guangrong } 90075f27498SXiao Guangrong } 90175f27498SXiao Guangrong 902c1404bdeSEric Auger void nvdimm_init_acpi_state(NVDIMMState *state, MemoryRegion *io, 9035fe79386SXiao Guangrong FWCfgState *fw_cfg, Object *owner) 9045fe79386SXiao Guangrong { 9055fe79386SXiao Guangrong memory_region_init_io(&state->io_mr, owner, &nvdimm_dsm_ops, state, 9065fe79386SXiao Guangrong "nvdimm-acpi-io", NVDIMM_ACPI_IO_LEN); 9075fe79386SXiao Guangrong memory_region_add_subregion(io, NVDIMM_ACPI_IO_BASE, &state->io_mr); 9085fe79386SXiao Guangrong 9095fe79386SXiao Guangrong state->dsm_mem = g_array_new(false, true /* clear */, 1); 91035c5a52dSPaolo Bonzini acpi_data_push(state->dsm_mem, sizeof(NvdimmDsmIn)); 9115fe79386SXiao Guangrong fw_cfg_add_file(fw_cfg, NVDIMM_DSM_MEM_FILE, state->dsm_mem->data, 9125fe79386SXiao Guangrong state->dsm_mem->len); 91375b0713eSXiao Guangrong 91475b0713eSXiao Guangrong nvdimm_init_fit_buffer(&state->fit_buf); 9155fe79386SXiao Guangrong } 9165fe79386SXiao Guangrong 91777286395SXiao Guangrong #define NVDIMM_COMMON_DSM "NCAL" 918b9951413SXiao Guangrong #define NVDIMM_ACPI_MEM_ADDR "MEMA" 91977286395SXiao Guangrong 9203ae66c45SXiao Guangrong #define NVDIMM_DSM_MEMORY "NRAM" 9213ae66c45SXiao Guangrong #define NVDIMM_DSM_IOPORT "NPIO" 9223ae66c45SXiao Guangrong 9233ae66c45SXiao Guangrong #define NVDIMM_DSM_NOTIFY "NTFI" 9243ae66c45SXiao Guangrong #define NVDIMM_DSM_HANDLE "HDLE" 9253ae66c45SXiao Guangrong #define NVDIMM_DSM_REVISION "REVS" 9263ae66c45SXiao Guangrong #define NVDIMM_DSM_FUNCTION "FUNC" 9273ae66c45SXiao Guangrong #define NVDIMM_DSM_ARG3 "FARG" 9283ae66c45SXiao Guangrong 9293ae66c45SXiao Guangrong #define NVDIMM_DSM_OUT_BUF_SIZE "RLEN" 9303ae66c45SXiao Guangrong #define NVDIMM_DSM_OUT_BUF "ODAT" 9313ae66c45SXiao Guangrong 932806864d9SXiao Guangrong #define NVDIMM_DSM_RFIT_STATUS "RSTA" 933806864d9SXiao Guangrong 934806864d9SXiao Guangrong #define NVDIMM_QEMU_RSVD_UUID "648B9CF2-CDA1-4312-8AD9-49C4AF32BD62" 935806864d9SXiao Guangrong 93677286395SXiao Guangrong static void nvdimm_build_common_dsm(Aml *dev) 93777286395SXiao Guangrong { 938806864d9SXiao Guangrong Aml *method, *ifctx, *function, *handle, *uuid, *dsm_mem, *elsectx2; 93990623ebfSXiao Guangrong Aml *elsectx, *unsupport, *unpatched, *expected_uuid, *uuid_invalid; 940fa1a448dSXiao Guangrong Aml *pckg, *pckg_index, *pckg_buf, *field, *dsm_out_buf, *dsm_out_buf_size; 94177286395SXiao Guangrong uint8_t byte_list[1]; 94277286395SXiao Guangrong 943732b530cSXiao Guangrong method = aml_method(NVDIMM_COMMON_DSM, 5, AML_SERIALIZED); 94490623ebfSXiao Guangrong uuid = aml_arg(0); 94577286395SXiao Guangrong function = aml_arg(2); 94690623ebfSXiao Guangrong handle = aml_arg(4); 947c0b3b863SXiao Guangrong dsm_mem = aml_local(6); 94848bee476SXiao Guangrong dsm_out_buf = aml_local(7); 949c0b3b863SXiao Guangrong 950c0b3b863SXiao Guangrong aml_append(method, aml_store(aml_name(NVDIMM_ACPI_MEM_ADDR), dsm_mem)); 951c0b3b863SXiao Guangrong 952c0b3b863SXiao Guangrong /* map DSM memory and IO into ACPI namespace. */ 9533ae66c45SXiao Guangrong aml_append(method, aml_operation_region(NVDIMM_DSM_IOPORT, AML_SYSTEM_IO, 954c0b3b863SXiao Guangrong aml_int(NVDIMM_ACPI_IO_BASE), NVDIMM_ACPI_IO_LEN)); 9553ae66c45SXiao Guangrong aml_append(method, aml_operation_region(NVDIMM_DSM_MEMORY, 9563ae66c45SXiao Guangrong AML_SYSTEM_MEMORY, dsm_mem, sizeof(NvdimmDsmIn))); 957c0b3b863SXiao Guangrong 958c0b3b863SXiao Guangrong /* 959c0b3b863SXiao Guangrong * DSM notifier: 9603ae66c45SXiao Guangrong * NVDIMM_DSM_NOTIFY: write the address of DSM memory and notify QEMU to 9613ae66c45SXiao Guangrong * emulate the access. 962c0b3b863SXiao Guangrong * 963c0b3b863SXiao Guangrong * It is the IO port so that accessing them will cause VM-exit, the 964c0b3b863SXiao Guangrong * control will be transferred to QEMU. 965c0b3b863SXiao Guangrong */ 9663ae66c45SXiao Guangrong field = aml_field(NVDIMM_DSM_IOPORT, AML_DWORD_ACC, AML_NOLOCK, 9673ae66c45SXiao Guangrong AML_PRESERVE); 9683ae66c45SXiao Guangrong aml_append(field, aml_named_field(NVDIMM_DSM_NOTIFY, 9691b8fff57SWei Yang NVDIMM_ACPI_IO_LEN * BITS_PER_BYTE)); 970c0b3b863SXiao Guangrong aml_append(method, field); 971c0b3b863SXiao Guangrong 972c0b3b863SXiao Guangrong /* 973c0b3b863SXiao Guangrong * DSM input: 9743ae66c45SXiao Guangrong * NVDIMM_DSM_HANDLE: store device's handle, it's zero if the _DSM call 9753ae66c45SXiao Guangrong * happens on NVDIMM Root Device. 9763ae66c45SXiao Guangrong * NVDIMM_DSM_REVISION: store the Arg1 of _DSM call. 9773ae66c45SXiao Guangrong * NVDIMM_DSM_FUNCTION: store the Arg2 of _DSM call. 9783ae66c45SXiao Guangrong * NVDIMM_DSM_ARG3: store the Arg3 of _DSM call which is a Package 9793ae66c45SXiao Guangrong * containing function-specific arguments. 980c0b3b863SXiao Guangrong * 981c0b3b863SXiao Guangrong * They are RAM mapping on host so that these accesses never cause 982c0b3b863SXiao Guangrong * VM-EXIT. 983c0b3b863SXiao Guangrong */ 9843ae66c45SXiao Guangrong field = aml_field(NVDIMM_DSM_MEMORY, AML_DWORD_ACC, AML_NOLOCK, 9853ae66c45SXiao Guangrong AML_PRESERVE); 9863ae66c45SXiao Guangrong aml_append(field, aml_named_field(NVDIMM_DSM_HANDLE, 987c0b3b863SXiao Guangrong sizeof(typeof_field(NvdimmDsmIn, handle)) * BITS_PER_BYTE)); 9883ae66c45SXiao Guangrong aml_append(field, aml_named_field(NVDIMM_DSM_REVISION, 989c0b3b863SXiao Guangrong sizeof(typeof_field(NvdimmDsmIn, revision)) * BITS_PER_BYTE)); 9903ae66c45SXiao Guangrong aml_append(field, aml_named_field(NVDIMM_DSM_FUNCTION, 991c0b3b863SXiao Guangrong sizeof(typeof_field(NvdimmDsmIn, function)) * BITS_PER_BYTE)); 9923ae66c45SXiao Guangrong aml_append(field, aml_named_field(NVDIMM_DSM_ARG3, 993c0b3b863SXiao Guangrong (sizeof(NvdimmDsmIn) - offsetof(NvdimmDsmIn, arg3)) * BITS_PER_BYTE)); 994c0b3b863SXiao Guangrong aml_append(method, field); 995c0b3b863SXiao Guangrong 996c0b3b863SXiao Guangrong /* 997c0b3b863SXiao Guangrong * DSM output: 9983ae66c45SXiao Guangrong * NVDIMM_DSM_OUT_BUF_SIZE: the size of the buffer filled by QEMU. 9993ae66c45SXiao Guangrong * NVDIMM_DSM_OUT_BUF: the buffer QEMU uses to store the result. 1000c0b3b863SXiao Guangrong * 1001c0b3b863SXiao Guangrong * Since the page is reused by both input and out, the input data 1002c0b3b863SXiao Guangrong * will be lost after storing new result into ODAT so we should fetch 1003c0b3b863SXiao Guangrong * all the input data before writing the result. 1004c0b3b863SXiao Guangrong */ 10053ae66c45SXiao Guangrong field = aml_field(NVDIMM_DSM_MEMORY, AML_DWORD_ACC, AML_NOLOCK, 10063ae66c45SXiao Guangrong AML_PRESERVE); 10073ae66c45SXiao Guangrong aml_append(field, aml_named_field(NVDIMM_DSM_OUT_BUF_SIZE, 1008c0b3b863SXiao Guangrong sizeof(typeof_field(NvdimmDsmOut, len)) * BITS_PER_BYTE)); 10093ae66c45SXiao Guangrong aml_append(field, aml_named_field(NVDIMM_DSM_OUT_BUF, 1010c0b3b863SXiao Guangrong (sizeof(NvdimmDsmOut) - offsetof(NvdimmDsmOut, data)) * BITS_PER_BYTE)); 1011c0b3b863SXiao Guangrong aml_append(method, field); 101218c440e1SXiao Guangrong 101318c440e1SXiao Guangrong /* 101418c440e1SXiao Guangrong * do not support any method if DSM memory address has not been 101518c440e1SXiao Guangrong * patched. 101618c440e1SXiao Guangrong */ 101790623ebfSXiao Guangrong unpatched = aml_equal(dsm_mem, aml_int(0x0)); 101890623ebfSXiao Guangrong 101990623ebfSXiao Guangrong expected_uuid = aml_local(0); 102090623ebfSXiao Guangrong 102190623ebfSXiao Guangrong ifctx = aml_if(aml_equal(handle, aml_int(0x0))); 102290623ebfSXiao Guangrong aml_append(ifctx, aml_store( 102390623ebfSXiao Guangrong aml_touuid("2F10E7A4-9E91-11E4-89D3-123B93F75CBA") 102490623ebfSXiao Guangrong /* UUID for NVDIMM Root Device */, expected_uuid)); 102590623ebfSXiao Guangrong aml_append(method, ifctx); 102690623ebfSXiao Guangrong elsectx = aml_else(); 1027806864d9SXiao Guangrong ifctx = aml_if(aml_equal(handle, aml_int(NVDIMM_QEMU_RSVD_HANDLE_ROOT))); 1028806864d9SXiao Guangrong aml_append(ifctx, aml_store(aml_touuid(NVDIMM_QEMU_RSVD_UUID 1029806864d9SXiao Guangrong /* UUID for QEMU internal use */), expected_uuid)); 1030806864d9SXiao Guangrong aml_append(elsectx, ifctx); 1031806864d9SXiao Guangrong elsectx2 = aml_else(); 1032806864d9SXiao Guangrong aml_append(elsectx2, aml_store( 103390623ebfSXiao Guangrong aml_touuid("4309AC30-0D11-11E4-9191-0800200C9A66") 103490623ebfSXiao Guangrong /* UUID for NVDIMM Devices */, expected_uuid)); 1035806864d9SXiao Guangrong aml_append(elsectx, elsectx2); 103690623ebfSXiao Guangrong aml_append(method, elsectx); 103790623ebfSXiao Guangrong 103890623ebfSXiao Guangrong uuid_invalid = aml_lnot(aml_equal(uuid, expected_uuid)); 103990623ebfSXiao Guangrong 104090623ebfSXiao Guangrong unsupport = aml_if(aml_or(unpatched, uuid_invalid, NULL)); 104177286395SXiao Guangrong 104277286395SXiao Guangrong /* 104377286395SXiao Guangrong * function 0 is called to inquire what functions are supported by 104477286395SXiao Guangrong * OSPM 104577286395SXiao Guangrong */ 104677286395SXiao Guangrong ifctx = aml_if(aml_equal(function, aml_int(0))); 104777286395SXiao Guangrong byte_list[0] = 0 /* No function Supported */; 104877286395SXiao Guangrong aml_append(ifctx, aml_return(aml_buffer(1, byte_list))); 104990623ebfSXiao Guangrong aml_append(unsupport, ifctx); 105077286395SXiao Guangrong 105177286395SXiao Guangrong /* No function is supported yet. */ 1052c2fa3075SXiao Guangrong byte_list[0] = NVDIMM_DSM_RET_STATUS_UNSUPPORT; 105390623ebfSXiao Guangrong aml_append(unsupport, aml_return(aml_buffer(1, byte_list))); 105490623ebfSXiao Guangrong aml_append(method, unsupport); 105577286395SXiao Guangrong 105618c440e1SXiao Guangrong /* 105718c440e1SXiao Guangrong * The HDLE indicates the DSM function is issued from which device, 1058732b530cSXiao Guangrong * it reserves 0 for root device and is the handle for NVDIMM devices. 1059732b530cSXiao Guangrong * See the comments in nvdimm_slot_to_handle(). 106018c440e1SXiao Guangrong */ 10613ae66c45SXiao Guangrong aml_append(method, aml_store(handle, aml_name(NVDIMM_DSM_HANDLE))); 10623ae66c45SXiao Guangrong aml_append(method, aml_store(aml_arg(1), aml_name(NVDIMM_DSM_REVISION))); 1063ac265cacSWei Yang aml_append(method, aml_store(function, aml_name(NVDIMM_DSM_FUNCTION))); 106418c440e1SXiao Guangrong 106518c440e1SXiao Guangrong /* 10664568c948SXiao Guangrong * The fourth parameter (Arg3) of _DSM is a package which contains 10674568c948SXiao Guangrong * a buffer, the layout of the buffer is specified by UUID (Arg0), 10684568c948SXiao Guangrong * Revision ID (Arg1) and Function Index (Arg2) which are documented 10694568c948SXiao Guangrong * in the DSM Spec. 10704568c948SXiao Guangrong */ 10714568c948SXiao Guangrong pckg = aml_arg(3); 10724568c948SXiao Guangrong ifctx = aml_if(aml_and(aml_equal(aml_object_type(pckg), 10734568c948SXiao Guangrong aml_int(4 /* Package */)) /* It is a Package? */, 10744568c948SXiao Guangrong aml_equal(aml_sizeof(pckg), aml_int(1)) /* 1 element? */, 10754568c948SXiao Guangrong NULL)); 10764568c948SXiao Guangrong 10774568c948SXiao Guangrong pckg_index = aml_local(2); 10784568c948SXiao Guangrong pckg_buf = aml_local(3); 10794568c948SXiao Guangrong aml_append(ifctx, aml_store(aml_index(pckg, aml_int(0)), pckg_index)); 10804568c948SXiao Guangrong aml_append(ifctx, aml_store(aml_derefof(pckg_index), pckg_buf)); 10813ae66c45SXiao Guangrong aml_append(ifctx, aml_store(pckg_buf, aml_name(NVDIMM_DSM_ARG3))); 10824568c948SXiao Guangrong aml_append(method, ifctx); 10834568c948SXiao Guangrong 10844568c948SXiao Guangrong /* 108518c440e1SXiao Guangrong * tell QEMU about the real address of DSM memory, then QEMU 108618c440e1SXiao Guangrong * gets the control and fills the result in DSM memory. 108718c440e1SXiao Guangrong */ 10883ae66c45SXiao Guangrong aml_append(method, aml_store(dsm_mem, aml_name(NVDIMM_DSM_NOTIFY))); 108918c440e1SXiao Guangrong 1090fa1a448dSXiao Guangrong dsm_out_buf_size = aml_local(1); 1091d51d1d7eSXiao Guangrong /* RLEN is not included in the payload returned to guest. */ 10923ae66c45SXiao Guangrong aml_append(method, aml_subtract(aml_name(NVDIMM_DSM_OUT_BUF_SIZE), 10933ae66c45SXiao Guangrong aml_int(4), dsm_out_buf_size)); 1094fa1a448dSXiao Guangrong aml_append(method, aml_store(aml_shiftleft(dsm_out_buf_size, aml_int(3)), 1095fa1a448dSXiao Guangrong dsm_out_buf_size)); 10963ae66c45SXiao Guangrong aml_append(method, aml_create_field(aml_name(NVDIMM_DSM_OUT_BUF), 10973ae66c45SXiao Guangrong aml_int(0), dsm_out_buf_size, "OBUF")); 109818c440e1SXiao Guangrong aml_append(method, aml_concatenate(aml_buffer(0, NULL), aml_name("OBUF"), 109948bee476SXiao Guangrong dsm_out_buf)); 110048bee476SXiao Guangrong aml_append(method, aml_return(dsm_out_buf)); 110177286395SXiao Guangrong aml_append(dev, method); 110277286395SXiao Guangrong } 110377286395SXiao Guangrong 1104732b530cSXiao Guangrong static void nvdimm_build_device_dsm(Aml *dev, uint32_t handle) 110577286395SXiao Guangrong { 110677286395SXiao Guangrong Aml *method; 110777286395SXiao Guangrong 110877286395SXiao Guangrong method = aml_method("_DSM", 4, AML_NOTSERIALIZED); 1109732b530cSXiao Guangrong aml_append(method, aml_return(aml_call5(NVDIMM_COMMON_DSM, aml_arg(0), 1110732b530cSXiao Guangrong aml_arg(1), aml_arg(2), aml_arg(3), 1111732b530cSXiao Guangrong aml_int(handle)))); 111277286395SXiao Guangrong aml_append(dev, method); 111377286395SXiao Guangrong } 111477286395SXiao Guangrong 1115806864d9SXiao Guangrong static void nvdimm_build_fit(Aml *dev) 1116806864d9SXiao Guangrong { 1117806864d9SXiao Guangrong Aml *method, *pkg, *buf, *buf_size, *offset, *call_result; 1118806864d9SXiao Guangrong Aml *whilectx, *ifcond, *ifctx, *elsectx, *fit; 1119806864d9SXiao Guangrong 1120806864d9SXiao Guangrong buf = aml_local(0); 1121806864d9SXiao Guangrong buf_size = aml_local(1); 1122806864d9SXiao Guangrong fit = aml_local(2); 1123806864d9SXiao Guangrong 1124aef056c1SXiao Guangrong aml_append(dev, aml_name_decl(NVDIMM_DSM_RFIT_STATUS, aml_int(0))); 1125806864d9SXiao Guangrong 1126806864d9SXiao Guangrong /* build helper function, RFIT. */ 1127806864d9SXiao Guangrong method = aml_method("RFIT", 1, AML_SERIALIZED); 1128aef056c1SXiao Guangrong aml_append(method, aml_name_decl("OFST", aml_int(0))); 1129806864d9SXiao Guangrong 1130806864d9SXiao Guangrong /* prepare input package. */ 1131806864d9SXiao Guangrong pkg = aml_package(1); 1132806864d9SXiao Guangrong aml_append(method, aml_store(aml_arg(0), aml_name("OFST"))); 1133806864d9SXiao Guangrong aml_append(pkg, aml_name("OFST")); 1134806864d9SXiao Guangrong 1135806864d9SXiao Guangrong /* call Read_FIT function. */ 1136806864d9SXiao Guangrong call_result = aml_call5(NVDIMM_COMMON_DSM, 1137806864d9SXiao Guangrong aml_touuid(NVDIMM_QEMU_RSVD_UUID), 1138806864d9SXiao Guangrong aml_int(1) /* Revision 1 */, 1139806864d9SXiao Guangrong aml_int(0x1) /* Read FIT */, 1140806864d9SXiao Guangrong pkg, aml_int(NVDIMM_QEMU_RSVD_HANDLE_ROOT)); 1141806864d9SXiao Guangrong aml_append(method, aml_store(call_result, buf)); 1142806864d9SXiao Guangrong 1143806864d9SXiao Guangrong /* handle _DSM result. */ 1144806864d9SXiao Guangrong aml_append(method, aml_create_dword_field(buf, 1145806864d9SXiao Guangrong aml_int(0) /* offset at byte 0 */, "STAU")); 1146806864d9SXiao Guangrong 1147806864d9SXiao Guangrong aml_append(method, aml_store(aml_name("STAU"), 1148806864d9SXiao Guangrong aml_name(NVDIMM_DSM_RFIT_STATUS))); 1149806864d9SXiao Guangrong 1150806864d9SXiao Guangrong /* if something is wrong during _DSM. */ 1151c2fa3075SXiao Guangrong ifcond = aml_equal(aml_int(NVDIMM_DSM_RET_STATUS_SUCCESS), 1152c2fa3075SXiao Guangrong aml_name("STAU")); 1153806864d9SXiao Guangrong ifctx = aml_if(aml_lnot(ifcond)); 1154806864d9SXiao Guangrong aml_append(ifctx, aml_return(aml_buffer(0, NULL))); 1155806864d9SXiao Guangrong aml_append(method, ifctx); 1156806864d9SXiao Guangrong 1157806864d9SXiao Guangrong aml_append(method, aml_store(aml_sizeof(buf), buf_size)); 1158806864d9SXiao Guangrong aml_append(method, aml_subtract(buf_size, 1159806864d9SXiao Guangrong aml_int(4) /* the size of "STAU" */, 1160806864d9SXiao Guangrong buf_size)); 1161806864d9SXiao Guangrong 1162806864d9SXiao Guangrong /* if we read the end of fit. */ 1163806864d9SXiao Guangrong ifctx = aml_if(aml_equal(buf_size, aml_int(0))); 1164806864d9SXiao Guangrong aml_append(ifctx, aml_return(aml_buffer(0, NULL))); 1165806864d9SXiao Guangrong aml_append(method, ifctx); 1166806864d9SXiao Guangrong 1167806864d9SXiao Guangrong aml_append(method, aml_create_field(buf, 1168806864d9SXiao Guangrong aml_int(4 * BITS_PER_BYTE), /* offset at byte 4.*/ 1169880f3612SXiao Guangrong aml_shiftleft(buf_size, aml_int(3)), "BUFF")); 1170806864d9SXiao Guangrong aml_append(method, aml_return(aml_name("BUFF"))); 1171806864d9SXiao Guangrong aml_append(dev, method); 1172806864d9SXiao Guangrong 1173806864d9SXiao Guangrong /* build _FIT. */ 1174806864d9SXiao Guangrong method = aml_method("_FIT", 0, AML_SERIALIZED); 1175806864d9SXiao Guangrong offset = aml_local(3); 1176806864d9SXiao Guangrong 1177806864d9SXiao Guangrong aml_append(method, aml_store(aml_buffer(0, NULL), fit)); 1178806864d9SXiao Guangrong aml_append(method, aml_store(aml_int(0), offset)); 1179806864d9SXiao Guangrong 1180806864d9SXiao Guangrong whilectx = aml_while(aml_int(1)); 1181806864d9SXiao Guangrong aml_append(whilectx, aml_store(aml_call1("RFIT", offset), buf)); 1182806864d9SXiao Guangrong aml_append(whilectx, aml_store(aml_sizeof(buf), buf_size)); 1183806864d9SXiao Guangrong 1184806864d9SXiao Guangrong /* 1185806864d9SXiao Guangrong * if fit buffer was changed during RFIT, read from the beginning 1186806864d9SXiao Guangrong * again. 1187806864d9SXiao Guangrong */ 1188806864d9SXiao Guangrong ifctx = aml_if(aml_equal(aml_name(NVDIMM_DSM_RFIT_STATUS), 1189c2fa3075SXiao Guangrong aml_int(NVDIMM_DSM_RET_STATUS_FIT_CHANGED))); 1190806864d9SXiao Guangrong aml_append(ifctx, aml_store(aml_buffer(0, NULL), fit)); 1191806864d9SXiao Guangrong aml_append(ifctx, aml_store(aml_int(0), offset)); 1192806864d9SXiao Guangrong aml_append(whilectx, ifctx); 1193806864d9SXiao Guangrong 1194806864d9SXiao Guangrong elsectx = aml_else(); 1195806864d9SXiao Guangrong 1196806864d9SXiao Guangrong /* finish fit read if no data is read out. */ 1197806864d9SXiao Guangrong ifctx = aml_if(aml_equal(buf_size, aml_int(0))); 1198806864d9SXiao Guangrong aml_append(ifctx, aml_return(fit)); 1199806864d9SXiao Guangrong aml_append(elsectx, ifctx); 1200806864d9SXiao Guangrong 1201806864d9SXiao Guangrong /* update the offset. */ 1202806864d9SXiao Guangrong aml_append(elsectx, aml_add(offset, buf_size, offset)); 1203806864d9SXiao Guangrong /* append the data we read out to the fit buffer. */ 1204806864d9SXiao Guangrong aml_append(elsectx, aml_concatenate(fit, buf, fit)); 1205806864d9SXiao Guangrong aml_append(whilectx, elsectx); 1206806864d9SXiao Guangrong aml_append(method, whilectx); 1207806864d9SXiao Guangrong 1208806864d9SXiao Guangrong aml_append(dev, method); 1209806864d9SXiao Guangrong } 1210806864d9SXiao Guangrong 1211bdfd065bSXiao Guangrong static void nvdimm_build_nvdimm_devices(Aml *root_dev, uint32_t ram_slots) 121277286395SXiao Guangrong { 1213bdfd065bSXiao Guangrong uint32_t slot; 1214bdfd065bSXiao Guangrong 1215bdfd065bSXiao Guangrong for (slot = 0; slot < ram_slots; slot++) { 121677286395SXiao Guangrong uint32_t handle = nvdimm_slot_to_handle(slot); 121777286395SXiao Guangrong Aml *nvdimm_dev; 121877286395SXiao Guangrong 121977286395SXiao Guangrong nvdimm_dev = aml_device("NV%02X", slot); 122077286395SXiao Guangrong 122177286395SXiao Guangrong /* 122277286395SXiao Guangrong * ACPI 6.0: 9.20 NVDIMM Devices: 122377286395SXiao Guangrong * 122477286395SXiao Guangrong * _ADR object that is used to supply OSPM with unique address 122577286395SXiao Guangrong * of the NVDIMM device. This is done by returning the NFIT Device 122677286395SXiao Guangrong * handle that is used to identify the associated entries in ACPI 122777286395SXiao Guangrong * table NFIT or _FIT. 122877286395SXiao Guangrong */ 122977286395SXiao Guangrong aml_append(nvdimm_dev, aml_name_decl("_ADR", aml_int(handle))); 123077286395SXiao Guangrong 1231732b530cSXiao Guangrong nvdimm_build_device_dsm(nvdimm_dev, handle); 123277286395SXiao Guangrong aml_append(root_dev, nvdimm_dev); 123377286395SXiao Guangrong } 123477286395SXiao Guangrong } 123577286395SXiao Guangrong 1236bdfd065bSXiao Guangrong static void nvdimm_build_ssdt(GArray *table_offsets, GArray *table_data, 1237b096c114SWei Yang BIOSLinker *linker, GArray *dsm_dma_area, 1238bdfd065bSXiao Guangrong uint32_t ram_slots) 123977286395SXiao Guangrong { 1240c0b3b863SXiao Guangrong Aml *ssdt, *sb_scope, *dev; 1241b9951413SXiao Guangrong int mem_addr_offset, nvdimm_ssdt; 124277286395SXiao Guangrong 124377286395SXiao Guangrong acpi_add_table(table_offsets, table_data); 124477286395SXiao Guangrong 124577286395SXiao Guangrong ssdt = init_aml_allocator(); 124677286395SXiao Guangrong acpi_data_push(ssdt->buf, sizeof(AcpiTableHeader)); 124777286395SXiao Guangrong 124877286395SXiao Guangrong sb_scope = aml_scope("\\_SB"); 124977286395SXiao Guangrong 125077286395SXiao Guangrong dev = aml_device("NVDR"); 125177286395SXiao Guangrong 125277286395SXiao Guangrong /* 125377286395SXiao Guangrong * ACPI 6.0: 9.20 NVDIMM Devices: 125477286395SXiao Guangrong * 125577286395SXiao Guangrong * The ACPI Name Space device uses _HID of ACPI0012 to identify the root 125677286395SXiao Guangrong * NVDIMM interface device. Platform firmware is required to contain one 125777286395SXiao Guangrong * such device in _SB scope if NVDIMMs support is exposed by platform to 125877286395SXiao Guangrong * OSPM. 125977286395SXiao Guangrong * For each NVDIMM present or intended to be supported by platform, 126077286395SXiao Guangrong * platform firmware also exposes an ACPI Namespace Device under the 126177286395SXiao Guangrong * root device. 126277286395SXiao Guangrong */ 126377286395SXiao Guangrong aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0012"))); 126477286395SXiao Guangrong 126577286395SXiao Guangrong nvdimm_build_common_dsm(dev); 1266732b530cSXiao Guangrong 1267732b530cSXiao Guangrong /* 0 is reserved for root device. */ 1268732b530cSXiao Guangrong nvdimm_build_device_dsm(dev, 0); 1269806864d9SXiao Guangrong nvdimm_build_fit(dev); 127077286395SXiao Guangrong 1271bdfd065bSXiao Guangrong nvdimm_build_nvdimm_devices(dev, ram_slots); 127277286395SXiao Guangrong 127377286395SXiao Guangrong aml_append(sb_scope, dev); 127477286395SXiao Guangrong aml_append(ssdt, sb_scope); 1275b9951413SXiao Guangrong 1276b9951413SXiao Guangrong nvdimm_ssdt = table_data->len; 1277b9951413SXiao Guangrong 127877286395SXiao Guangrong /* copy AML table into ACPI tables blob and patch header there */ 127977286395SXiao Guangrong g_array_append_vals(table_data, ssdt->buf->data, ssdt->buf->len); 1280b9951413SXiao Guangrong mem_addr_offset = build_append_named_dword(table_data, 1281b9951413SXiao Guangrong NVDIMM_ACPI_MEM_ADDR); 1282b9951413SXiao Guangrong 1283ad9671b8SIgor Mammedov bios_linker_loader_alloc(linker, 1284b096c114SWei Yang NVDIMM_DSM_MEM_FILE, dsm_dma_area, 1285ad9671b8SIgor Mammedov sizeof(NvdimmDsmIn), false /* high memory */); 12864678124bSIgor Mammedov bios_linker_loader_add_pointer(linker, 12874678124bSIgor Mammedov ACPI_BUILD_TABLE_FILE, mem_addr_offset, sizeof(uint32_t), 12884678124bSIgor Mammedov NVDIMM_DSM_MEM_FILE, 0); 128977286395SXiao Guangrong build_header(linker, table_data, 1290b9951413SXiao Guangrong (void *)(table_data->data + nvdimm_ssdt), 1291b9951413SXiao Guangrong "SSDT", table_data->len - nvdimm_ssdt, 1, NULL, "NVDIMM"); 129277286395SXiao Guangrong free_aml_allocator(); 129377286395SXiao Guangrong } 129477286395SXiao Guangrong 129587252e1bSXiao Guangrong void nvdimm_build_acpi(GArray *table_offsets, GArray *table_data, 1296c1404bdeSEric Auger BIOSLinker *linker, NVDIMMState *state, 1297bdfd065bSXiao Guangrong uint32_t ram_slots) 129887252e1bSXiao Guangrong { 1299264813cbSXiao Guangrong GSList *device_list; 1300bdfd065bSXiao Guangrong 1301264813cbSXiao Guangrong /* no nvdimm device can be plugged. */ 1302264813cbSXiao Guangrong if (!ram_slots) { 1303264813cbSXiao Guangrong return; 1304264813cbSXiao Guangrong } 1305264813cbSXiao Guangrong 130675b0713eSXiao Guangrong nvdimm_build_ssdt(table_offsets, table_data, linker, state->dsm_mem, 1307bdfd065bSXiao Guangrong ram_slots); 1308264813cbSXiao Guangrong 1309cf7c0ff5SXiao Guangrong device_list = nvdimm_get_device_list(); 1310264813cbSXiao Guangrong /* no NVDIMM device is plugged. */ 1311264813cbSXiao Guangrong if (!device_list) { 1312264813cbSXiao Guangrong return; 1313bdfd065bSXiao Guangrong } 1314264813cbSXiao Guangrong 1315264813cbSXiao Guangrong nvdimm_build_nfit(state, table_offsets, table_data, linker); 1316264813cbSXiao Guangrong g_slist_free(device_list); 1317bdfd065bSXiao Guangrong } 1318