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" 3587252e1bSXiao Guangrong 36cf7c0ff5SXiao Guangrong static int nvdimm_device_list(Object *obj, void *opaque) 3787252e1bSXiao Guangrong { 3887252e1bSXiao Guangrong GSList **list = opaque; 3987252e1bSXiao Guangrong 4087252e1bSXiao Guangrong if (object_dynamic_cast(obj, TYPE_NVDIMM)) { 4187252e1bSXiao Guangrong *list = g_slist_append(*list, DEVICE(obj)); 4287252e1bSXiao Guangrong } 4387252e1bSXiao Guangrong 44cf7c0ff5SXiao Guangrong object_child_foreach(obj, nvdimm_device_list, opaque); 4587252e1bSXiao Guangrong return 0; 4687252e1bSXiao Guangrong } 4787252e1bSXiao Guangrong 4887252e1bSXiao Guangrong /* 49cf7c0ff5SXiao Guangrong * inquire NVDIMM devices and link them into the list which is 5087252e1bSXiao Guangrong * returned to the caller. 5187252e1bSXiao Guangrong * 5287252e1bSXiao Guangrong * Note: it is the caller's responsibility to free the list to avoid 5387252e1bSXiao Guangrong * memory leak. 5487252e1bSXiao Guangrong */ 55cf7c0ff5SXiao Guangrong static GSList *nvdimm_get_device_list(void) 5687252e1bSXiao Guangrong { 5787252e1bSXiao Guangrong GSList *list = NULL; 5887252e1bSXiao Guangrong 59cf7c0ff5SXiao Guangrong object_child_foreach(qdev_get_machine(), nvdimm_device_list, &list); 6087252e1bSXiao Guangrong return list; 6187252e1bSXiao Guangrong } 6287252e1bSXiao Guangrong 6387252e1bSXiao Guangrong #define NVDIMM_UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ 6487252e1bSXiao Guangrong { (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ 6587252e1bSXiao Guangrong (b) & 0xff, ((b) >> 8) & 0xff, (c) & 0xff, ((c) >> 8) & 0xff, \ 6687252e1bSXiao Guangrong (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) } 6787252e1bSXiao Guangrong 6887252e1bSXiao Guangrong /* 6987252e1bSXiao Guangrong * define Byte Addressable Persistent Memory (PM) Region according to 7087252e1bSXiao Guangrong * ACPI 6.0: 5.2.25.1 System Physical Address Range Structure. 7187252e1bSXiao Guangrong */ 7287252e1bSXiao Guangrong static const uint8_t nvdimm_nfit_spa_uuid[] = 7387252e1bSXiao Guangrong NVDIMM_UUID_LE(0x66f0d379, 0xb4f3, 0x4074, 0xac, 0x43, 0x0d, 0x33, 7487252e1bSXiao Guangrong 0x18, 0xb7, 0x8c, 0xdb); 7587252e1bSXiao Guangrong 7687252e1bSXiao Guangrong /* 7787252e1bSXiao Guangrong * NVDIMM Firmware Interface Table 7887252e1bSXiao Guangrong * @signature: "NFIT" 7987252e1bSXiao Guangrong * 8087252e1bSXiao Guangrong * It provides information that allows OSPM to enumerate NVDIMM present in 8187252e1bSXiao Guangrong * the platform and associate system physical address ranges created by the 8287252e1bSXiao Guangrong * NVDIMMs. 8387252e1bSXiao Guangrong * 8487252e1bSXiao Guangrong * It is defined in ACPI 6.0: 5.2.25 NVDIMM Firmware Interface Table (NFIT) 8587252e1bSXiao Guangrong */ 8687252e1bSXiao Guangrong struct NvdimmNfitHeader { 8787252e1bSXiao Guangrong ACPI_TABLE_HEADER_DEF 8887252e1bSXiao Guangrong uint32_t reserved; 8987252e1bSXiao Guangrong } QEMU_PACKED; 9087252e1bSXiao Guangrong typedef struct NvdimmNfitHeader NvdimmNfitHeader; 9187252e1bSXiao Guangrong 9287252e1bSXiao Guangrong /* 9387252e1bSXiao Guangrong * define NFIT structures according to ACPI 6.0: 5.2.25 NVDIMM Firmware 9487252e1bSXiao Guangrong * Interface Table (NFIT). 9587252e1bSXiao Guangrong */ 9687252e1bSXiao Guangrong 9787252e1bSXiao Guangrong /* 9887252e1bSXiao Guangrong * System Physical Address Range Structure 9987252e1bSXiao Guangrong * 10087252e1bSXiao Guangrong * It describes the system physical address ranges occupied by NVDIMMs and 10187252e1bSXiao Guangrong * the types of the regions. 10287252e1bSXiao Guangrong */ 10387252e1bSXiao Guangrong struct NvdimmNfitSpa { 10487252e1bSXiao Guangrong uint16_t type; 10587252e1bSXiao Guangrong uint16_t length; 10687252e1bSXiao Guangrong uint16_t spa_index; 10787252e1bSXiao Guangrong uint16_t flags; 10887252e1bSXiao Guangrong uint32_t reserved; 10987252e1bSXiao Guangrong uint32_t proximity_domain; 11087252e1bSXiao Guangrong uint8_t type_guid[16]; 11187252e1bSXiao Guangrong uint64_t spa_base; 11287252e1bSXiao Guangrong uint64_t spa_length; 11387252e1bSXiao Guangrong uint64_t mem_attr; 11487252e1bSXiao Guangrong } QEMU_PACKED; 11587252e1bSXiao Guangrong typedef struct NvdimmNfitSpa NvdimmNfitSpa; 11687252e1bSXiao Guangrong 11787252e1bSXiao Guangrong /* 11887252e1bSXiao Guangrong * Memory Device to System Physical Address Range Mapping Structure 11987252e1bSXiao Guangrong * 12087252e1bSXiao Guangrong * It enables identifying each NVDIMM region and the corresponding SPA 12187252e1bSXiao Guangrong * describing the memory interleave 12287252e1bSXiao Guangrong */ 12387252e1bSXiao Guangrong struct NvdimmNfitMemDev { 12487252e1bSXiao Guangrong uint16_t type; 12587252e1bSXiao Guangrong uint16_t length; 12687252e1bSXiao Guangrong uint32_t nfit_handle; 12787252e1bSXiao Guangrong uint16_t phys_id; 12887252e1bSXiao Guangrong uint16_t region_id; 12987252e1bSXiao Guangrong uint16_t spa_index; 13087252e1bSXiao Guangrong uint16_t dcr_index; 13187252e1bSXiao Guangrong uint64_t region_len; 13287252e1bSXiao Guangrong uint64_t region_offset; 13387252e1bSXiao Guangrong uint64_t region_dpa; 13487252e1bSXiao Guangrong uint16_t interleave_index; 13587252e1bSXiao Guangrong uint16_t interleave_ways; 13687252e1bSXiao Guangrong uint16_t flags; 13787252e1bSXiao Guangrong uint16_t reserved; 13887252e1bSXiao Guangrong } QEMU_PACKED; 13987252e1bSXiao Guangrong typedef struct NvdimmNfitMemDev NvdimmNfitMemDev; 14087252e1bSXiao Guangrong 141cb836434SHaozhong Zhang #define ACPI_NFIT_MEM_NOT_ARMED (1 << 3) 142cb836434SHaozhong Zhang 14387252e1bSXiao Guangrong /* 14487252e1bSXiao Guangrong * NVDIMM Control Region Structure 14587252e1bSXiao Guangrong * 14687252e1bSXiao Guangrong * It describes the NVDIMM and if applicable, Block Control Window. 14787252e1bSXiao Guangrong */ 14887252e1bSXiao Guangrong struct NvdimmNfitControlRegion { 14987252e1bSXiao Guangrong uint16_t type; 15087252e1bSXiao Guangrong uint16_t length; 15187252e1bSXiao Guangrong uint16_t dcr_index; 15287252e1bSXiao Guangrong uint16_t vendor_id; 15387252e1bSXiao Guangrong uint16_t device_id; 15487252e1bSXiao Guangrong uint16_t revision_id; 15587252e1bSXiao Guangrong uint16_t sub_vendor_id; 15687252e1bSXiao Guangrong uint16_t sub_device_id; 15787252e1bSXiao Guangrong uint16_t sub_revision_id; 15887252e1bSXiao Guangrong uint8_t reserved[6]; 15987252e1bSXiao Guangrong uint32_t serial_number; 16087252e1bSXiao Guangrong uint16_t fic; 16187252e1bSXiao Guangrong uint16_t num_bcw; 16287252e1bSXiao Guangrong uint64_t bcw_size; 16387252e1bSXiao Guangrong uint64_t cmd_offset; 16487252e1bSXiao Guangrong uint64_t cmd_size; 16587252e1bSXiao Guangrong uint64_t status_offset; 16687252e1bSXiao Guangrong uint64_t status_size; 16787252e1bSXiao Guangrong uint16_t flags; 16887252e1bSXiao Guangrong uint8_t reserved2[6]; 16987252e1bSXiao Guangrong } QEMU_PACKED; 17087252e1bSXiao Guangrong typedef struct NvdimmNfitControlRegion NvdimmNfitControlRegion; 17187252e1bSXiao Guangrong 17287252e1bSXiao Guangrong /* 1739ab3aad2SRoss Zwisler * NVDIMM Platform Capabilities Structure 1749ab3aad2SRoss Zwisler * 1759ab3aad2SRoss Zwisler * Defined in section 5.2.25.9 of ACPI 6.2 Errata A, September 2017 1769ab3aad2SRoss Zwisler */ 1779ab3aad2SRoss Zwisler struct NvdimmNfitPlatformCaps { 1789ab3aad2SRoss Zwisler uint16_t type; 1799ab3aad2SRoss Zwisler uint16_t length; 1809ab3aad2SRoss Zwisler uint8_t highest_cap; 1819ab3aad2SRoss Zwisler uint8_t reserved[3]; 1829ab3aad2SRoss Zwisler uint32_t capabilities; 1839ab3aad2SRoss Zwisler uint8_t reserved2[4]; 1849ab3aad2SRoss Zwisler } QEMU_PACKED; 1859ab3aad2SRoss Zwisler typedef struct NvdimmNfitPlatformCaps NvdimmNfitPlatformCaps; 1869ab3aad2SRoss Zwisler 1879ab3aad2SRoss Zwisler /* 18887252e1bSXiao Guangrong * Module serial number is a unique number for each device. We use the 18987252e1bSXiao Guangrong * slot id of NVDIMM device to generate this number so that each device 19087252e1bSXiao Guangrong * associates with a different number. 19187252e1bSXiao Guangrong * 19287252e1bSXiao Guangrong * 0x123456 is a magic number we arbitrarily chose. 19387252e1bSXiao Guangrong */ 19487252e1bSXiao Guangrong static uint32_t nvdimm_slot_to_sn(int slot) 19587252e1bSXiao Guangrong { 19687252e1bSXiao Guangrong return 0x123456 + slot; 19787252e1bSXiao Guangrong } 19887252e1bSXiao Guangrong 19987252e1bSXiao Guangrong /* 20087252e1bSXiao Guangrong * handle is used to uniquely associate nfit_memdev structure with NVDIMM 20187252e1bSXiao Guangrong * ACPI device - nfit_memdev.nfit_handle matches with the value returned 20287252e1bSXiao Guangrong * by ACPI device _ADR method. 20387252e1bSXiao Guangrong * 20487252e1bSXiao Guangrong * We generate the handle with the slot id of NVDIMM device and reserve 20587252e1bSXiao Guangrong * 0 for NVDIMM root device. 20687252e1bSXiao Guangrong */ 20787252e1bSXiao Guangrong static uint32_t nvdimm_slot_to_handle(int slot) 20887252e1bSXiao Guangrong { 20987252e1bSXiao Guangrong return slot + 1; 21087252e1bSXiao Guangrong } 21187252e1bSXiao Guangrong 21287252e1bSXiao Guangrong /* 21387252e1bSXiao Guangrong * index uniquely identifies the structure, 0 is reserved which indicates 21487252e1bSXiao Guangrong * that the structure is not valid or the associated structure is not 21587252e1bSXiao Guangrong * present. 21687252e1bSXiao Guangrong * 21787252e1bSXiao Guangrong * Each NVDIMM device needs two indexes, one for nfit_spa and another for 21887252e1bSXiao Guangrong * nfit_dc which are generated by the slot id of NVDIMM device. 21987252e1bSXiao Guangrong */ 22087252e1bSXiao Guangrong static uint16_t nvdimm_slot_to_spa_index(int slot) 22187252e1bSXiao Guangrong { 22287252e1bSXiao Guangrong return (slot + 1) << 1; 22387252e1bSXiao Guangrong } 22487252e1bSXiao Guangrong 22587252e1bSXiao Guangrong /* See the comments of nvdimm_slot_to_spa_index(). */ 22687252e1bSXiao Guangrong static uint32_t nvdimm_slot_to_dcr_index(int slot) 22787252e1bSXiao Guangrong { 22887252e1bSXiao Guangrong return nvdimm_slot_to_spa_index(slot) + 1; 22987252e1bSXiao Guangrong } 23087252e1bSXiao Guangrong 2315797dcdcSXiao Guangrong static NVDIMMDevice *nvdimm_get_device_by_handle(uint32_t handle) 2325797dcdcSXiao Guangrong { 2335797dcdcSXiao Guangrong NVDIMMDevice *nvdimm = NULL; 234cf7c0ff5SXiao Guangrong GSList *list, *device_list = nvdimm_get_device_list(); 2355797dcdcSXiao Guangrong 2365797dcdcSXiao Guangrong for (list = device_list; list; list = list->next) { 2375797dcdcSXiao Guangrong NVDIMMDevice *nvd = list->data; 2385797dcdcSXiao Guangrong int slot = object_property_get_int(OBJECT(nvd), PC_DIMM_SLOT_PROP, 2395797dcdcSXiao Guangrong NULL); 2405797dcdcSXiao Guangrong 2415797dcdcSXiao Guangrong if (nvdimm_slot_to_handle(slot) == handle) { 2425797dcdcSXiao Guangrong nvdimm = nvd; 2435797dcdcSXiao Guangrong break; 2445797dcdcSXiao Guangrong } 2455797dcdcSXiao Guangrong } 2465797dcdcSXiao Guangrong 2475797dcdcSXiao Guangrong g_slist_free(device_list); 2485797dcdcSXiao Guangrong return nvdimm; 2495797dcdcSXiao Guangrong } 2505797dcdcSXiao Guangrong 25187252e1bSXiao Guangrong /* ACPI 6.0: 5.2.25.1 System Physical Address Range Structure */ 25287252e1bSXiao Guangrong static void 25387252e1bSXiao Guangrong nvdimm_build_structure_spa(GArray *structures, DeviceState *dev) 25487252e1bSXiao Guangrong { 25587252e1bSXiao Guangrong NvdimmNfitSpa *nfit_spa; 2569ed442b8SMarc-André Lureau uint64_t addr = object_property_get_uint(OBJECT(dev), PC_DIMM_ADDR_PROP, 25787252e1bSXiao Guangrong NULL); 258b053ef61SMarc-André Lureau uint64_t size = object_property_get_uint(OBJECT(dev), PC_DIMM_SIZE_PROP, 25987252e1bSXiao Guangrong NULL); 2609ed442b8SMarc-André Lureau uint32_t node = object_property_get_uint(OBJECT(dev), PC_DIMM_NODE_PROP, 26187252e1bSXiao Guangrong NULL); 26287252e1bSXiao Guangrong int slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, 26387252e1bSXiao Guangrong NULL); 26487252e1bSXiao Guangrong 26587252e1bSXiao Guangrong nfit_spa = acpi_data_push(structures, sizeof(*nfit_spa)); 26687252e1bSXiao Guangrong 26787252e1bSXiao Guangrong nfit_spa->type = cpu_to_le16(0 /* System Physical Address Range 26887252e1bSXiao Guangrong Structure */); 26987252e1bSXiao Guangrong nfit_spa->length = cpu_to_le16(sizeof(*nfit_spa)); 27087252e1bSXiao Guangrong nfit_spa->spa_index = cpu_to_le16(nvdimm_slot_to_spa_index(slot)); 27187252e1bSXiao Guangrong 27287252e1bSXiao Guangrong /* 27387252e1bSXiao Guangrong * Control region is strict as all the device info, such as SN, index, 27487252e1bSXiao Guangrong * is associated with slot id. 27587252e1bSXiao Guangrong */ 27687252e1bSXiao Guangrong nfit_spa->flags = cpu_to_le16(1 /* Control region is strictly for 27787252e1bSXiao Guangrong management during hot add/online 27887252e1bSXiao Guangrong operation */ | 27987252e1bSXiao Guangrong 2 /* Data in Proximity Domain field is 28087252e1bSXiao Guangrong valid*/); 28187252e1bSXiao Guangrong 28287252e1bSXiao Guangrong /* NUMA node. */ 28387252e1bSXiao Guangrong nfit_spa->proximity_domain = cpu_to_le32(node); 28487252e1bSXiao Guangrong /* the region reported as PMEM. */ 28587252e1bSXiao Guangrong memcpy(nfit_spa->type_guid, nvdimm_nfit_spa_uuid, 28687252e1bSXiao Guangrong sizeof(nvdimm_nfit_spa_uuid)); 28787252e1bSXiao Guangrong 28887252e1bSXiao Guangrong nfit_spa->spa_base = cpu_to_le64(addr); 28987252e1bSXiao Guangrong nfit_spa->spa_length = cpu_to_le64(size); 29087252e1bSXiao Guangrong 29187252e1bSXiao Guangrong /* It is the PMEM and can be cached as writeback. */ 29287252e1bSXiao Guangrong nfit_spa->mem_attr = cpu_to_le64(0x8ULL /* EFI_MEMORY_WB */ | 29387252e1bSXiao Guangrong 0x8000ULL /* EFI_MEMORY_NV */); 29487252e1bSXiao Guangrong } 29587252e1bSXiao Guangrong 29687252e1bSXiao Guangrong /* 29787252e1bSXiao Guangrong * ACPI 6.0: 5.2.25.2 Memory Device to System Physical Address Range Mapping 29887252e1bSXiao Guangrong * Structure 29987252e1bSXiao Guangrong */ 30087252e1bSXiao Guangrong static void 30187252e1bSXiao Guangrong nvdimm_build_structure_memdev(GArray *structures, DeviceState *dev) 30287252e1bSXiao Guangrong { 30387252e1bSXiao Guangrong NvdimmNfitMemDev *nfit_memdev; 304cb836434SHaozhong Zhang NVDIMMDevice *nvdimm = NVDIMM(OBJECT(dev)); 305b053ef61SMarc-André Lureau uint64_t size = object_property_get_uint(OBJECT(dev), PC_DIMM_SIZE_PROP, 30687252e1bSXiao Guangrong NULL); 30787252e1bSXiao Guangrong int slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, 30887252e1bSXiao Guangrong NULL); 30987252e1bSXiao Guangrong uint32_t handle = nvdimm_slot_to_handle(slot); 31087252e1bSXiao Guangrong 31187252e1bSXiao Guangrong nfit_memdev = acpi_data_push(structures, sizeof(*nfit_memdev)); 31287252e1bSXiao Guangrong 31387252e1bSXiao Guangrong nfit_memdev->type = cpu_to_le16(1 /* Memory Device to System Address 31487252e1bSXiao Guangrong Range Map Structure*/); 31587252e1bSXiao Guangrong nfit_memdev->length = cpu_to_le16(sizeof(*nfit_memdev)); 31687252e1bSXiao Guangrong nfit_memdev->nfit_handle = cpu_to_le32(handle); 31787252e1bSXiao Guangrong 31887252e1bSXiao Guangrong /* 31987252e1bSXiao Guangrong * associate memory device with System Physical Address Range 32087252e1bSXiao Guangrong * Structure. 32187252e1bSXiao Guangrong */ 32287252e1bSXiao Guangrong nfit_memdev->spa_index = cpu_to_le16(nvdimm_slot_to_spa_index(slot)); 32387252e1bSXiao Guangrong /* associate memory device with Control Region Structure. */ 32487252e1bSXiao Guangrong nfit_memdev->dcr_index = cpu_to_le16(nvdimm_slot_to_dcr_index(slot)); 32587252e1bSXiao Guangrong 32687252e1bSXiao Guangrong /* The memory region on the device. */ 32787252e1bSXiao Guangrong nfit_memdev->region_len = cpu_to_le64(size); 3286ab0c4bdSXiao Guangrong /* The device address starts from 0. */ 3296ab0c4bdSXiao Guangrong nfit_memdev->region_dpa = cpu_to_le64(0); 33087252e1bSXiao Guangrong 33187252e1bSXiao Guangrong /* Only one interleave for PMEM. */ 33287252e1bSXiao Guangrong nfit_memdev->interleave_ways = cpu_to_le16(1); 333cb836434SHaozhong Zhang 334cb836434SHaozhong Zhang if (nvdimm->unarmed) { 335cb836434SHaozhong Zhang nfit_memdev->flags |= cpu_to_le16(ACPI_NFIT_MEM_NOT_ARMED); 336cb836434SHaozhong Zhang } 33787252e1bSXiao Guangrong } 33887252e1bSXiao Guangrong 33987252e1bSXiao Guangrong /* 34087252e1bSXiao Guangrong * ACPI 6.0: 5.2.25.5 NVDIMM Control Region Structure. 34187252e1bSXiao Guangrong */ 34287252e1bSXiao Guangrong static void nvdimm_build_structure_dcr(GArray *structures, DeviceState *dev) 34387252e1bSXiao Guangrong { 34487252e1bSXiao Guangrong NvdimmNfitControlRegion *nfit_dcr; 34587252e1bSXiao Guangrong int slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, 34687252e1bSXiao Guangrong NULL); 34787252e1bSXiao Guangrong uint32_t sn = nvdimm_slot_to_sn(slot); 34887252e1bSXiao Guangrong 34987252e1bSXiao Guangrong nfit_dcr = acpi_data_push(structures, sizeof(*nfit_dcr)); 35087252e1bSXiao Guangrong 35187252e1bSXiao Guangrong nfit_dcr->type = cpu_to_le16(4 /* NVDIMM Control Region Structure */); 35287252e1bSXiao Guangrong nfit_dcr->length = cpu_to_le16(sizeof(*nfit_dcr)); 35387252e1bSXiao Guangrong nfit_dcr->dcr_index = cpu_to_le16(nvdimm_slot_to_dcr_index(slot)); 35487252e1bSXiao Guangrong 35587252e1bSXiao Guangrong /* vendor: Intel. */ 35687252e1bSXiao Guangrong nfit_dcr->vendor_id = cpu_to_le16(0x8086); 35787252e1bSXiao Guangrong nfit_dcr->device_id = cpu_to_le16(1); 35887252e1bSXiao Guangrong 35987252e1bSXiao Guangrong /* The _DSM method is following Intel's DSM specification. */ 36087252e1bSXiao Guangrong nfit_dcr->revision_id = cpu_to_le16(1 /* Current Revision supported 36187252e1bSXiao Guangrong in ACPI 6.0 is 1. */); 36287252e1bSXiao Guangrong nfit_dcr->serial_number = cpu_to_le32(sn); 36320fdef58SHaozhong Zhang nfit_dcr->fic = cpu_to_le16(0x301 /* Format Interface Code: 36420fdef58SHaozhong Zhang Byte addressable, no energy backed. 36520fdef58SHaozhong Zhang See ACPI 6.2, sect 5.2.25.6 and 36620fdef58SHaozhong Zhang JEDEC Annex L Release 3. */); 36787252e1bSXiao Guangrong } 36887252e1bSXiao Guangrong 3699ab3aad2SRoss Zwisler /* 3709ab3aad2SRoss Zwisler * ACPI 6.2 Errata A: 5.2.25.9 NVDIMM Platform Capabilities Structure 3719ab3aad2SRoss Zwisler */ 3729ab3aad2SRoss Zwisler static void 3739ab3aad2SRoss Zwisler nvdimm_build_structure_caps(GArray *structures, uint32_t capabilities) 3749ab3aad2SRoss Zwisler { 3759ab3aad2SRoss Zwisler NvdimmNfitPlatformCaps *nfit_caps; 3769ab3aad2SRoss Zwisler 3779ab3aad2SRoss Zwisler nfit_caps = acpi_data_push(structures, sizeof(*nfit_caps)); 3789ab3aad2SRoss Zwisler 3799ab3aad2SRoss Zwisler nfit_caps->type = cpu_to_le16(7 /* NVDIMM Platform Capabilities */); 3809ab3aad2SRoss Zwisler nfit_caps->length = cpu_to_le16(sizeof(*nfit_caps)); 3819ab3aad2SRoss Zwisler nfit_caps->highest_cap = 31 - clz32(capabilities); 3829ab3aad2SRoss Zwisler nfit_caps->capabilities = cpu_to_le32(capabilities); 3839ab3aad2SRoss Zwisler } 3849ab3aad2SRoss Zwisler 3859ab3aad2SRoss Zwisler static GArray *nvdimm_build_device_structure(AcpiNVDIMMState *state) 38687252e1bSXiao Guangrong { 387cf7c0ff5SXiao Guangrong GSList *device_list = nvdimm_get_device_list(); 38887252e1bSXiao Guangrong GArray *structures = g_array_new(false, true /* clear */, 1); 38987252e1bSXiao Guangrong 39087252e1bSXiao Guangrong for (; device_list; device_list = device_list->next) { 39187252e1bSXiao Guangrong DeviceState *dev = device_list->data; 39287252e1bSXiao Guangrong 39387252e1bSXiao Guangrong /* build System Physical Address Range Structure. */ 39487252e1bSXiao Guangrong nvdimm_build_structure_spa(structures, dev); 39587252e1bSXiao Guangrong 39687252e1bSXiao Guangrong /* 39787252e1bSXiao Guangrong * build Memory Device to System Physical Address Range Mapping 39887252e1bSXiao Guangrong * Structure. 39987252e1bSXiao Guangrong */ 40087252e1bSXiao Guangrong nvdimm_build_structure_memdev(structures, dev); 40187252e1bSXiao Guangrong 40287252e1bSXiao Guangrong /* build NVDIMM Control Region Structure. */ 40387252e1bSXiao Guangrong nvdimm_build_structure_dcr(structures, dev); 40487252e1bSXiao Guangrong } 40575b0713eSXiao Guangrong g_slist_free(device_list); 40687252e1bSXiao Guangrong 407*11c39b5cSRoss Zwisler if (state->persistence) { 408*11c39b5cSRoss Zwisler nvdimm_build_structure_caps(structures, state->persistence); 4099ab3aad2SRoss Zwisler } 4109ab3aad2SRoss Zwisler 41187252e1bSXiao Guangrong return structures; 41287252e1bSXiao Guangrong } 41387252e1bSXiao Guangrong 41475b0713eSXiao Guangrong static void nvdimm_init_fit_buffer(NvdimmFitBuffer *fit_buf) 41575b0713eSXiao Guangrong { 41675b0713eSXiao Guangrong fit_buf->fit = g_array_new(false, true /* clear */, 1); 41775b0713eSXiao Guangrong } 41875b0713eSXiao Guangrong 4199ab3aad2SRoss Zwisler static void nvdimm_build_fit_buffer(AcpiNVDIMMState *state) 42075b0713eSXiao Guangrong { 4219ab3aad2SRoss Zwisler NvdimmFitBuffer *fit_buf = &state->fit_buf; 4229ab3aad2SRoss Zwisler 42375b0713eSXiao Guangrong g_array_free(fit_buf->fit, true); 4249ab3aad2SRoss Zwisler fit_buf->fit = nvdimm_build_device_structure(state); 42575b0713eSXiao Guangrong fit_buf->dirty = true; 42675b0713eSXiao Guangrong } 42775b0713eSXiao Guangrong 428284197e4SXiao Guangrong void nvdimm_plug(AcpiNVDIMMState *state) 42975b0713eSXiao Guangrong { 4309ab3aad2SRoss Zwisler nvdimm_build_fit_buffer(state); 43175b0713eSXiao Guangrong } 43275b0713eSXiao Guangrong 43375b0713eSXiao Guangrong static void nvdimm_build_nfit(AcpiNVDIMMState *state, GArray *table_offsets, 4340e9b9edaSIgor Mammedov GArray *table_data, BIOSLinker *linker) 43587252e1bSXiao Guangrong { 43675b0713eSXiao Guangrong NvdimmFitBuffer *fit_buf = &state->fit_buf; 437c8e6c938SHaozhong Zhang unsigned int header; 43887252e1bSXiao Guangrong 43987252e1bSXiao Guangrong acpi_add_table(table_offsets, table_data); 44087252e1bSXiao Guangrong 44187252e1bSXiao Guangrong /* NFIT header. */ 442c8e6c938SHaozhong Zhang header = table_data->len; 443c8e6c938SHaozhong Zhang acpi_data_push(table_data, sizeof(NvdimmNfitHeader)); 44487252e1bSXiao Guangrong /* NVDIMM device structures. */ 44575b0713eSXiao Guangrong g_array_append_vals(table_data, fit_buf->fit->data, fit_buf->fit->len); 44687252e1bSXiao Guangrong 447c8e6c938SHaozhong Zhang build_header(linker, table_data, 448c8e6c938SHaozhong Zhang (void *)(table_data->data + header), "NFIT", 44975b0713eSXiao Guangrong sizeof(NvdimmNfitHeader) + fit_buf->fit->len, 1, NULL, NULL); 45087252e1bSXiao Guangrong } 45187252e1bSXiao Guangrong 452cb88ebd7SXiao Guangrong #define NVDIMM_DSM_MEMORY_SIZE 4096 453cb88ebd7SXiao Guangrong 45418c440e1SXiao Guangrong struct NvdimmDsmIn { 45518c440e1SXiao Guangrong uint32_t handle; 45618c440e1SXiao Guangrong uint32_t revision; 45718c440e1SXiao Guangrong uint32_t function; 45818c440e1SXiao Guangrong /* the remaining size in the page is used by arg3. */ 45918c440e1SXiao Guangrong union { 46035c5a52dSPaolo Bonzini uint8_t arg3[4084]; 46118c440e1SXiao Guangrong }; 46218c440e1SXiao Guangrong } QEMU_PACKED; 46318c440e1SXiao Guangrong typedef struct NvdimmDsmIn NvdimmDsmIn; 464cb88ebd7SXiao Guangrong QEMU_BUILD_BUG_ON(sizeof(NvdimmDsmIn) != NVDIMM_DSM_MEMORY_SIZE); 46518c440e1SXiao Guangrong 46618c440e1SXiao Guangrong struct NvdimmDsmOut { 46718c440e1SXiao Guangrong /* the size of buffer filled by QEMU. */ 46818c440e1SXiao Guangrong uint32_t len; 46935c5a52dSPaolo Bonzini uint8_t data[4092]; 47018c440e1SXiao Guangrong } QEMU_PACKED; 47118c440e1SXiao Guangrong typedef struct NvdimmDsmOut NvdimmDsmOut; 472cb88ebd7SXiao Guangrong QEMU_BUILD_BUG_ON(sizeof(NvdimmDsmOut) != NVDIMM_DSM_MEMORY_SIZE); 47318c440e1SXiao Guangrong 474f7df22deSXiao Guangrong struct NvdimmDsmFunc0Out { 475f7df22deSXiao Guangrong /* the size of buffer filled by QEMU. */ 476f7df22deSXiao Guangrong uint32_t len; 477f7df22deSXiao Guangrong uint32_t supported_func; 478f7df22deSXiao Guangrong } QEMU_PACKED; 479f7df22deSXiao Guangrong typedef struct NvdimmDsmFunc0Out NvdimmDsmFunc0Out; 480f7df22deSXiao Guangrong 481f7df22deSXiao Guangrong struct NvdimmDsmFuncNoPayloadOut { 482f7df22deSXiao Guangrong /* the size of buffer filled by QEMU. */ 483f7df22deSXiao Guangrong uint32_t len; 484f7df22deSXiao Guangrong uint32_t func_ret_status; 485f7df22deSXiao Guangrong } QEMU_PACKED; 486f7df22deSXiao Guangrong typedef struct NvdimmDsmFuncNoPayloadOut NvdimmDsmFuncNoPayloadOut; 487f7df22deSXiao Guangrong 4885797dcdcSXiao Guangrong struct NvdimmFuncGetLabelSizeOut { 4895797dcdcSXiao Guangrong /* the size of buffer filled by QEMU. */ 4905797dcdcSXiao Guangrong uint32_t len; 4915797dcdcSXiao Guangrong uint32_t func_ret_status; /* return status code. */ 4925797dcdcSXiao Guangrong uint32_t label_size; /* the size of label data area. */ 4935797dcdcSXiao Guangrong /* 4945797dcdcSXiao Guangrong * Maximum size of the namespace label data length supported by 4955797dcdcSXiao Guangrong * the platform in Get/Set Namespace Label Data functions. 4965797dcdcSXiao Guangrong */ 4975797dcdcSXiao Guangrong uint32_t max_xfer; 4985797dcdcSXiao Guangrong } QEMU_PACKED; 4995797dcdcSXiao Guangrong typedef struct NvdimmFuncGetLabelSizeOut NvdimmFuncGetLabelSizeOut; 500cb88ebd7SXiao Guangrong QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncGetLabelSizeOut) > NVDIMM_DSM_MEMORY_SIZE); 5015797dcdcSXiao Guangrong 5022b9e57fcSXiao Guangrong struct NvdimmFuncGetLabelDataIn { 5032b9e57fcSXiao Guangrong uint32_t offset; /* the offset in the namespace label data area. */ 5042b9e57fcSXiao Guangrong uint32_t length; /* the size of data is to be read via the function. */ 5052b9e57fcSXiao Guangrong } QEMU_PACKED; 5062b9e57fcSXiao Guangrong typedef struct NvdimmFuncGetLabelDataIn NvdimmFuncGetLabelDataIn; 5072b9e57fcSXiao Guangrong QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncGetLabelDataIn) + 508cb88ebd7SXiao Guangrong offsetof(NvdimmDsmIn, arg3) > NVDIMM_DSM_MEMORY_SIZE); 5092b9e57fcSXiao Guangrong 5105797dcdcSXiao Guangrong struct NvdimmFuncGetLabelDataOut { 5115797dcdcSXiao Guangrong /* the size of buffer filled by QEMU. */ 5125797dcdcSXiao Guangrong uint32_t len; 5135797dcdcSXiao Guangrong uint32_t func_ret_status; /* return status code. */ 5145797dcdcSXiao Guangrong uint8_t out_buf[0]; /* the data got via Get Namesapce Label function. */ 5155797dcdcSXiao Guangrong } QEMU_PACKED; 5165797dcdcSXiao Guangrong typedef struct NvdimmFuncGetLabelDataOut NvdimmFuncGetLabelDataOut; 517cb88ebd7SXiao Guangrong QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncGetLabelDataOut) > NVDIMM_DSM_MEMORY_SIZE); 5185797dcdcSXiao Guangrong 5195797dcdcSXiao Guangrong struct NvdimmFuncSetLabelDataIn { 5205797dcdcSXiao Guangrong uint32_t offset; /* the offset in the namespace label data area. */ 5215797dcdcSXiao Guangrong uint32_t length; /* the size of data is to be written via the function. */ 5225797dcdcSXiao Guangrong uint8_t in_buf[0]; /* the data written to label data area. */ 5235797dcdcSXiao Guangrong } QEMU_PACKED; 5245797dcdcSXiao Guangrong typedef struct NvdimmFuncSetLabelDataIn NvdimmFuncSetLabelDataIn; 52514e44198SXiao Guangrong QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncSetLabelDataIn) + 526cb88ebd7SXiao Guangrong offsetof(NvdimmDsmIn, arg3) > NVDIMM_DSM_MEMORY_SIZE); 5275797dcdcSXiao Guangrong 528806864d9SXiao Guangrong struct NvdimmFuncReadFITIn { 5297adbce63SXiao Guangrong uint32_t offset; /* the offset into FIT buffer. */ 530806864d9SXiao Guangrong } QEMU_PACKED; 531806864d9SXiao Guangrong typedef struct NvdimmFuncReadFITIn NvdimmFuncReadFITIn; 532806864d9SXiao Guangrong QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncReadFITIn) + 533cb88ebd7SXiao Guangrong offsetof(NvdimmDsmIn, arg3) > NVDIMM_DSM_MEMORY_SIZE); 534806864d9SXiao Guangrong 535806864d9SXiao Guangrong struct NvdimmFuncReadFITOut { 536806864d9SXiao Guangrong /* the size of buffer filled by QEMU. */ 537806864d9SXiao Guangrong uint32_t len; 538806864d9SXiao Guangrong uint32_t func_ret_status; /* return status code. */ 539806864d9SXiao Guangrong uint8_t fit[0]; /* the FIT data. */ 540806864d9SXiao Guangrong } QEMU_PACKED; 541806864d9SXiao Guangrong typedef struct NvdimmFuncReadFITOut NvdimmFuncReadFITOut; 542cb88ebd7SXiao Guangrong QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncReadFITOut) > NVDIMM_DSM_MEMORY_SIZE); 543806864d9SXiao Guangrong 544189f4d56SXiao Guangrong static void 545189f4d56SXiao Guangrong nvdimm_dsm_function0(uint32_t supported_func, hwaddr dsm_mem_addr) 546189f4d56SXiao Guangrong { 547189f4d56SXiao Guangrong NvdimmDsmFunc0Out func0 = { 548189f4d56SXiao Guangrong .len = cpu_to_le32(sizeof(func0)), 549189f4d56SXiao Guangrong .supported_func = cpu_to_le32(supported_func), 550189f4d56SXiao Guangrong }; 551189f4d56SXiao Guangrong cpu_physical_memory_write(dsm_mem_addr, &func0, sizeof(func0)); 552189f4d56SXiao Guangrong } 553189f4d56SXiao Guangrong 554189f4d56SXiao Guangrong static void 555189f4d56SXiao Guangrong nvdimm_dsm_no_payload(uint32_t func_ret_status, hwaddr dsm_mem_addr) 556189f4d56SXiao Guangrong { 557189f4d56SXiao Guangrong NvdimmDsmFuncNoPayloadOut out = { 558189f4d56SXiao Guangrong .len = cpu_to_le32(sizeof(out)), 559189f4d56SXiao Guangrong .func_ret_status = cpu_to_le32(func_ret_status), 560189f4d56SXiao Guangrong }; 561189f4d56SXiao Guangrong cpu_physical_memory_write(dsm_mem_addr, &out, sizeof(out)); 562189f4d56SXiao Guangrong } 563189f4d56SXiao Guangrong 564c2fa3075SXiao Guangrong #define NVDIMM_DSM_RET_STATUS_SUCCESS 0 /* Success */ 565c2fa3075SXiao Guangrong #define NVDIMM_DSM_RET_STATUS_UNSUPPORT 1 /* Not Supported */ 566c2fa3075SXiao Guangrong #define NVDIMM_DSM_RET_STATUS_NOMEMDEV 2 /* Non-Existing Memory Device */ 567c2fa3075SXiao Guangrong #define NVDIMM_DSM_RET_STATUS_INVALID 3 /* Invalid Input Parameters */ 568c2fa3075SXiao Guangrong #define NVDIMM_DSM_RET_STATUS_FIT_CHANGED 0x100 /* FIT Changed */ 569c2fa3075SXiao Guangrong 570806864d9SXiao Guangrong #define NVDIMM_QEMU_RSVD_HANDLE_ROOT 0x10000 571806864d9SXiao Guangrong 572806864d9SXiao Guangrong /* Read FIT data, defined in docs/specs/acpi_nvdimm.txt. */ 573806864d9SXiao Guangrong static void nvdimm_dsm_func_read_fit(AcpiNVDIMMState *state, NvdimmDsmIn *in, 574806864d9SXiao Guangrong hwaddr dsm_mem_addr) 575806864d9SXiao Guangrong { 576806864d9SXiao Guangrong NvdimmFitBuffer *fit_buf = &state->fit_buf; 577806864d9SXiao Guangrong NvdimmFuncReadFITIn *read_fit; 578806864d9SXiao Guangrong NvdimmFuncReadFITOut *read_fit_out; 579806864d9SXiao Guangrong GArray *fit; 580806864d9SXiao Guangrong uint32_t read_len = 0, func_ret_status; 581806864d9SXiao Guangrong int size; 582806864d9SXiao Guangrong 583806864d9SXiao Guangrong read_fit = (NvdimmFuncReadFITIn *)in->arg3; 584806864d9SXiao Guangrong le32_to_cpus(&read_fit->offset); 585806864d9SXiao Guangrong 586806864d9SXiao Guangrong fit = fit_buf->fit; 587806864d9SXiao Guangrong 588806864d9SXiao Guangrong nvdimm_debug("Read FIT: offset %#x FIT size %#x Dirty %s.\n", 589806864d9SXiao Guangrong read_fit->offset, fit->len, fit_buf->dirty ? "Yes" : "No"); 590806864d9SXiao Guangrong 591806864d9SXiao Guangrong if (read_fit->offset > fit->len) { 592c2fa3075SXiao Guangrong func_ret_status = NVDIMM_DSM_RET_STATUS_INVALID; 593806864d9SXiao Guangrong goto exit; 594806864d9SXiao Guangrong } 595806864d9SXiao Guangrong 596806864d9SXiao Guangrong /* It is the first time to read FIT. */ 597806864d9SXiao Guangrong if (!read_fit->offset) { 598806864d9SXiao Guangrong fit_buf->dirty = false; 599806864d9SXiao Guangrong } else if (fit_buf->dirty) { /* FIT has been changed during RFIT. */ 600c2fa3075SXiao Guangrong func_ret_status = NVDIMM_DSM_RET_STATUS_FIT_CHANGED; 601806864d9SXiao Guangrong goto exit; 602806864d9SXiao Guangrong } 603806864d9SXiao Guangrong 604c2fa3075SXiao Guangrong func_ret_status = NVDIMM_DSM_RET_STATUS_SUCCESS; 605806864d9SXiao Guangrong read_len = MIN(fit->len - read_fit->offset, 606cb88ebd7SXiao Guangrong NVDIMM_DSM_MEMORY_SIZE - sizeof(NvdimmFuncReadFITOut)); 607806864d9SXiao Guangrong 608806864d9SXiao Guangrong exit: 609806864d9SXiao Guangrong size = sizeof(NvdimmFuncReadFITOut) + read_len; 610806864d9SXiao Guangrong read_fit_out = g_malloc(size); 611806864d9SXiao Guangrong 612806864d9SXiao Guangrong read_fit_out->len = cpu_to_le32(size); 613806864d9SXiao Guangrong read_fit_out->func_ret_status = cpu_to_le32(func_ret_status); 614806864d9SXiao Guangrong memcpy(read_fit_out->fit, fit->data + read_fit->offset, read_len); 615806864d9SXiao Guangrong 616806864d9SXiao Guangrong cpu_physical_memory_write(dsm_mem_addr, read_fit_out, size); 617806864d9SXiao Guangrong 618806864d9SXiao Guangrong g_free(read_fit_out); 619806864d9SXiao Guangrong } 620806864d9SXiao Guangrong 6215a33db78SXiao Guangrong static void 6225a33db78SXiao Guangrong nvdimm_dsm_handle_reserved_root_method(AcpiNVDIMMState *state, 6235a33db78SXiao Guangrong NvdimmDsmIn *in, hwaddr dsm_mem_addr) 624806864d9SXiao Guangrong { 625806864d9SXiao Guangrong switch (in->function) { 626806864d9SXiao Guangrong case 0x0: 627806864d9SXiao Guangrong nvdimm_dsm_function0(0x1 | 1 << 1 /* Read FIT */, dsm_mem_addr); 628806864d9SXiao Guangrong return; 629806864d9SXiao Guangrong case 0x1 /* Read FIT */: 630806864d9SXiao Guangrong nvdimm_dsm_func_read_fit(state, in, dsm_mem_addr); 631806864d9SXiao Guangrong return; 632806864d9SXiao Guangrong } 633806864d9SXiao Guangrong 634c2fa3075SXiao Guangrong nvdimm_dsm_no_payload(NVDIMM_DSM_RET_STATUS_UNSUPPORT, dsm_mem_addr); 635806864d9SXiao Guangrong } 636806864d9SXiao Guangrong 637189f4d56SXiao Guangrong static void nvdimm_dsm_root(NvdimmDsmIn *in, hwaddr dsm_mem_addr) 638189f4d56SXiao Guangrong { 639189f4d56SXiao Guangrong /* 640189f4d56SXiao Guangrong * function 0 is called to inquire which functions are supported by 641189f4d56SXiao Guangrong * OSPM 642189f4d56SXiao Guangrong */ 643189f4d56SXiao Guangrong if (!in->function) { 644189f4d56SXiao Guangrong nvdimm_dsm_function0(0 /* No function supported other than 645189f4d56SXiao Guangrong function 0 */, dsm_mem_addr); 646189f4d56SXiao Guangrong return; 647189f4d56SXiao Guangrong } 648189f4d56SXiao Guangrong 649189f4d56SXiao Guangrong /* No function except function 0 is supported yet. */ 650c2fa3075SXiao Guangrong nvdimm_dsm_no_payload(NVDIMM_DSM_RET_STATUS_UNSUPPORT, dsm_mem_addr); 651189f4d56SXiao Guangrong } 652189f4d56SXiao Guangrong 6535797dcdcSXiao Guangrong /* 6545797dcdcSXiao Guangrong * the max transfer size is the max size transferred by both a 6555797dcdcSXiao Guangrong * 'Get Namespace Label Data' function and a 'Set Namespace Label Data' 6565797dcdcSXiao Guangrong * function. 6575797dcdcSXiao Guangrong */ 6585797dcdcSXiao Guangrong static uint32_t nvdimm_get_max_xfer_label_size(void) 6595797dcdcSXiao Guangrong { 660cb88ebd7SXiao Guangrong uint32_t max_get_size, max_set_size, dsm_memory_size; 661cb88ebd7SXiao Guangrong 662cb88ebd7SXiao Guangrong dsm_memory_size = NVDIMM_DSM_MEMORY_SIZE; 6635797dcdcSXiao Guangrong 6645797dcdcSXiao Guangrong /* 6655797dcdcSXiao Guangrong * the max data ACPI can read one time which is transferred by 6665797dcdcSXiao Guangrong * the response of 'Get Namespace Label Data' function. 6675797dcdcSXiao Guangrong */ 6685797dcdcSXiao Guangrong max_get_size = dsm_memory_size - sizeof(NvdimmFuncGetLabelDataOut); 6695797dcdcSXiao Guangrong 6705797dcdcSXiao Guangrong /* 6715797dcdcSXiao Guangrong * the max data ACPI can write one time which is transferred by 6725797dcdcSXiao Guangrong * 'Set Namespace Label Data' function. 6735797dcdcSXiao Guangrong */ 6745797dcdcSXiao Guangrong max_set_size = dsm_memory_size - offsetof(NvdimmDsmIn, arg3) - 6755797dcdcSXiao Guangrong sizeof(NvdimmFuncSetLabelDataIn); 6765797dcdcSXiao Guangrong 6775797dcdcSXiao Guangrong return MIN(max_get_size, max_set_size); 6785797dcdcSXiao Guangrong } 6795797dcdcSXiao Guangrong 6805797dcdcSXiao Guangrong /* 6815797dcdcSXiao Guangrong * DSM Spec Rev1 4.4 Get Namespace Label Size (Function Index 4). 6825797dcdcSXiao Guangrong * 6835797dcdcSXiao Guangrong * It gets the size of Namespace Label data area and the max data size 6845797dcdcSXiao Guangrong * that Get/Set Namespace Label Data functions can transfer. 6855797dcdcSXiao Guangrong */ 6865797dcdcSXiao Guangrong static void nvdimm_dsm_label_size(NVDIMMDevice *nvdimm, hwaddr dsm_mem_addr) 6875797dcdcSXiao Guangrong { 6885797dcdcSXiao Guangrong NvdimmFuncGetLabelSizeOut label_size_out = { 6895797dcdcSXiao Guangrong .len = cpu_to_le32(sizeof(label_size_out)), 6905797dcdcSXiao Guangrong }; 6915797dcdcSXiao Guangrong uint32_t label_size, mxfer; 6925797dcdcSXiao Guangrong 6935797dcdcSXiao Guangrong label_size = nvdimm->label_size; 6945797dcdcSXiao Guangrong mxfer = nvdimm_get_max_xfer_label_size(); 6955797dcdcSXiao Guangrong 6965797dcdcSXiao Guangrong nvdimm_debug("label_size %#x, max_xfer %#x.\n", label_size, mxfer); 6975797dcdcSXiao Guangrong 698c2fa3075SXiao Guangrong label_size_out.func_ret_status = cpu_to_le32(NVDIMM_DSM_RET_STATUS_SUCCESS); 6995797dcdcSXiao Guangrong label_size_out.label_size = cpu_to_le32(label_size); 7005797dcdcSXiao Guangrong label_size_out.max_xfer = cpu_to_le32(mxfer); 7015797dcdcSXiao Guangrong 7025797dcdcSXiao Guangrong cpu_physical_memory_write(dsm_mem_addr, &label_size_out, 7035797dcdcSXiao Guangrong sizeof(label_size_out)); 7045797dcdcSXiao Guangrong } 7055797dcdcSXiao Guangrong 7062b9e57fcSXiao Guangrong static uint32_t nvdimm_rw_label_data_check(NVDIMMDevice *nvdimm, 7072b9e57fcSXiao Guangrong uint32_t offset, uint32_t length) 7082b9e57fcSXiao Guangrong { 709c2fa3075SXiao Guangrong uint32_t ret = NVDIMM_DSM_RET_STATUS_INVALID; 7102b9e57fcSXiao Guangrong 7112b9e57fcSXiao Guangrong if (offset + length < offset) { 7122b9e57fcSXiao Guangrong nvdimm_debug("offset %#x + length %#x is overflow.\n", offset, 7132b9e57fcSXiao Guangrong length); 7142b9e57fcSXiao Guangrong return ret; 7152b9e57fcSXiao Guangrong } 7162b9e57fcSXiao Guangrong 7172b9e57fcSXiao Guangrong if (nvdimm->label_size < offset + length) { 7182b9e57fcSXiao Guangrong nvdimm_debug("position %#x is beyond label data (len = %" PRIx64 ").\n", 7192b9e57fcSXiao Guangrong offset + length, nvdimm->label_size); 7202b9e57fcSXiao Guangrong return ret; 7212b9e57fcSXiao Guangrong } 7222b9e57fcSXiao Guangrong 7232b9e57fcSXiao Guangrong if (length > nvdimm_get_max_xfer_label_size()) { 7242b9e57fcSXiao Guangrong nvdimm_debug("length (%#x) is larger than max_xfer (%#x).\n", 7252b9e57fcSXiao Guangrong length, nvdimm_get_max_xfer_label_size()); 7262b9e57fcSXiao Guangrong return ret; 7272b9e57fcSXiao Guangrong } 7282b9e57fcSXiao Guangrong 729c2fa3075SXiao Guangrong return NVDIMM_DSM_RET_STATUS_SUCCESS; 7302b9e57fcSXiao Guangrong } 7312b9e57fcSXiao Guangrong 7322b9e57fcSXiao Guangrong /* 7332b9e57fcSXiao Guangrong * DSM Spec Rev1 4.5 Get Namespace Label Data (Function Index 5). 7342b9e57fcSXiao Guangrong */ 7352b9e57fcSXiao Guangrong static void nvdimm_dsm_get_label_data(NVDIMMDevice *nvdimm, NvdimmDsmIn *in, 7362b9e57fcSXiao Guangrong hwaddr dsm_mem_addr) 7372b9e57fcSXiao Guangrong { 7382b9e57fcSXiao Guangrong NVDIMMClass *nvc = NVDIMM_GET_CLASS(nvdimm); 7392b9e57fcSXiao Guangrong NvdimmFuncGetLabelDataIn *get_label_data; 7402b9e57fcSXiao Guangrong NvdimmFuncGetLabelDataOut *get_label_data_out; 7412b9e57fcSXiao Guangrong uint32_t status; 7422b9e57fcSXiao Guangrong int size; 7432b9e57fcSXiao Guangrong 7442b9e57fcSXiao Guangrong get_label_data = (NvdimmFuncGetLabelDataIn *)in->arg3; 7452b9e57fcSXiao Guangrong le32_to_cpus(&get_label_data->offset); 7462b9e57fcSXiao Guangrong le32_to_cpus(&get_label_data->length); 7472b9e57fcSXiao Guangrong 7482b9e57fcSXiao Guangrong nvdimm_debug("Read Label Data: offset %#x length %#x.\n", 7492b9e57fcSXiao Guangrong get_label_data->offset, get_label_data->length); 7502b9e57fcSXiao Guangrong 7512b9e57fcSXiao Guangrong status = nvdimm_rw_label_data_check(nvdimm, get_label_data->offset, 7522b9e57fcSXiao Guangrong get_label_data->length); 753c2fa3075SXiao Guangrong if (status != NVDIMM_DSM_RET_STATUS_SUCCESS) { 7542b9e57fcSXiao Guangrong nvdimm_dsm_no_payload(status, dsm_mem_addr); 7552b9e57fcSXiao Guangrong return; 7562b9e57fcSXiao Guangrong } 7572b9e57fcSXiao Guangrong 7582b9e57fcSXiao Guangrong size = sizeof(*get_label_data_out) + get_label_data->length; 759cb88ebd7SXiao Guangrong assert(size <= NVDIMM_DSM_MEMORY_SIZE); 7602b9e57fcSXiao Guangrong get_label_data_out = g_malloc(size); 7612b9e57fcSXiao Guangrong 7622b9e57fcSXiao Guangrong get_label_data_out->len = cpu_to_le32(size); 763c2fa3075SXiao Guangrong get_label_data_out->func_ret_status = 764c2fa3075SXiao Guangrong cpu_to_le32(NVDIMM_DSM_RET_STATUS_SUCCESS); 7652b9e57fcSXiao Guangrong nvc->read_label_data(nvdimm, get_label_data_out->out_buf, 7662b9e57fcSXiao Guangrong get_label_data->length, get_label_data->offset); 7672b9e57fcSXiao Guangrong 7682b9e57fcSXiao Guangrong cpu_physical_memory_write(dsm_mem_addr, get_label_data_out, size); 7692b9e57fcSXiao Guangrong g_free(get_label_data_out); 7702b9e57fcSXiao Guangrong } 7712b9e57fcSXiao Guangrong 77214e44198SXiao Guangrong /* 77314e44198SXiao Guangrong * DSM Spec Rev1 4.6 Set Namespace Label Data (Function Index 6). 77414e44198SXiao Guangrong */ 77514e44198SXiao Guangrong static void nvdimm_dsm_set_label_data(NVDIMMDevice *nvdimm, NvdimmDsmIn *in, 77614e44198SXiao Guangrong hwaddr dsm_mem_addr) 77714e44198SXiao Guangrong { 77814e44198SXiao Guangrong NVDIMMClass *nvc = NVDIMM_GET_CLASS(nvdimm); 77914e44198SXiao Guangrong NvdimmFuncSetLabelDataIn *set_label_data; 78014e44198SXiao Guangrong uint32_t status; 78114e44198SXiao Guangrong 78214e44198SXiao Guangrong set_label_data = (NvdimmFuncSetLabelDataIn *)in->arg3; 78314e44198SXiao Guangrong 78414e44198SXiao Guangrong le32_to_cpus(&set_label_data->offset); 78514e44198SXiao Guangrong le32_to_cpus(&set_label_data->length); 78614e44198SXiao Guangrong 78714e44198SXiao Guangrong nvdimm_debug("Write Label Data: offset %#x length %#x.\n", 78814e44198SXiao Guangrong set_label_data->offset, set_label_data->length); 78914e44198SXiao Guangrong 79014e44198SXiao Guangrong status = nvdimm_rw_label_data_check(nvdimm, set_label_data->offset, 79114e44198SXiao Guangrong set_label_data->length); 792c2fa3075SXiao Guangrong if (status != NVDIMM_DSM_RET_STATUS_SUCCESS) { 79314e44198SXiao Guangrong nvdimm_dsm_no_payload(status, dsm_mem_addr); 79414e44198SXiao Guangrong return; 79514e44198SXiao Guangrong } 79614e44198SXiao Guangrong 797cb88ebd7SXiao Guangrong assert(offsetof(NvdimmDsmIn, arg3) + sizeof(*set_label_data) + 798cb88ebd7SXiao Guangrong set_label_data->length <= NVDIMM_DSM_MEMORY_SIZE); 79914e44198SXiao Guangrong 80014e44198SXiao Guangrong nvc->write_label_data(nvdimm, set_label_data->in_buf, 80114e44198SXiao Guangrong set_label_data->length, set_label_data->offset); 802c2fa3075SXiao Guangrong nvdimm_dsm_no_payload(NVDIMM_DSM_RET_STATUS_SUCCESS, dsm_mem_addr); 80314e44198SXiao Guangrong } 80414e44198SXiao Guangrong 805189f4d56SXiao Guangrong static void nvdimm_dsm_device(NvdimmDsmIn *in, hwaddr dsm_mem_addr) 806189f4d56SXiao Guangrong { 8075797dcdcSXiao Guangrong NVDIMMDevice *nvdimm = nvdimm_get_device_by_handle(in->handle); 8085797dcdcSXiao Guangrong 809189f4d56SXiao Guangrong /* See the comments in nvdimm_dsm_root(). */ 810189f4d56SXiao Guangrong if (!in->function) { 8115797dcdcSXiao Guangrong uint32_t supported_func = 0; 8125797dcdcSXiao Guangrong 8135797dcdcSXiao Guangrong if (nvdimm && nvdimm->label_size) { 8145797dcdcSXiao Guangrong supported_func |= 0x1 /* Bit 0 indicates whether there is 8155797dcdcSXiao Guangrong support for any functions other 8165797dcdcSXiao Guangrong than function 0. */ | 8172b9e57fcSXiao Guangrong 1 << 4 /* Get Namespace Label Size */ | 81814e44198SXiao Guangrong 1 << 5 /* Get Namespace Label Data */ | 81914e44198SXiao Guangrong 1 << 6 /* Set Namespace Label Data */; 8205797dcdcSXiao Guangrong } 8215797dcdcSXiao Guangrong nvdimm_dsm_function0(supported_func, dsm_mem_addr); 822189f4d56SXiao Guangrong return; 823189f4d56SXiao Guangrong } 824189f4d56SXiao Guangrong 8255797dcdcSXiao Guangrong if (!nvdimm) { 826c2fa3075SXiao Guangrong nvdimm_dsm_no_payload(NVDIMM_DSM_RET_STATUS_NOMEMDEV, 8275797dcdcSXiao Guangrong dsm_mem_addr); 8285797dcdcSXiao Guangrong return; 8295797dcdcSXiao Guangrong } 8305797dcdcSXiao Guangrong 8315797dcdcSXiao Guangrong /* Encode DSM function according to DSM Spec Rev1. */ 8325797dcdcSXiao Guangrong switch (in->function) { 8335797dcdcSXiao Guangrong case 4 /* Get Namespace Label Size */: 8345797dcdcSXiao Guangrong if (nvdimm->label_size) { 8355797dcdcSXiao Guangrong nvdimm_dsm_label_size(nvdimm, dsm_mem_addr); 8365797dcdcSXiao Guangrong return; 8375797dcdcSXiao Guangrong } 8385797dcdcSXiao Guangrong break; 8392b9e57fcSXiao Guangrong case 5 /* Get Namespace Label Data */: 8402b9e57fcSXiao Guangrong if (nvdimm->label_size) { 8412b9e57fcSXiao Guangrong nvdimm_dsm_get_label_data(nvdimm, in, dsm_mem_addr); 8422b9e57fcSXiao Guangrong return; 8432b9e57fcSXiao Guangrong } 8442b9e57fcSXiao Guangrong break; 84514e44198SXiao Guangrong case 0x6 /* Set Namespace Label Data */: 84614e44198SXiao Guangrong if (nvdimm->label_size) { 84714e44198SXiao Guangrong nvdimm_dsm_set_label_data(nvdimm, in, dsm_mem_addr); 84814e44198SXiao Guangrong return; 84914e44198SXiao Guangrong } 85014e44198SXiao Guangrong break; 8515797dcdcSXiao Guangrong } 8525797dcdcSXiao Guangrong 853c2fa3075SXiao Guangrong nvdimm_dsm_no_payload(NVDIMM_DSM_RET_STATUS_UNSUPPORT, dsm_mem_addr); 854189f4d56SXiao Guangrong } 855189f4d56SXiao Guangrong 8565fe79386SXiao Guangrong static uint64_t 8575fe79386SXiao Guangrong nvdimm_dsm_read(void *opaque, hwaddr addr, unsigned size) 8585fe79386SXiao Guangrong { 859f7df22deSXiao Guangrong nvdimm_debug("BUG: we never read _DSM IO Port.\n"); 8605fe79386SXiao Guangrong return 0; 8615fe79386SXiao Guangrong } 8625fe79386SXiao Guangrong 8635fe79386SXiao Guangrong static void 8645fe79386SXiao Guangrong nvdimm_dsm_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) 8655fe79386SXiao Guangrong { 866806864d9SXiao Guangrong AcpiNVDIMMState *state = opaque; 867f7df22deSXiao Guangrong NvdimmDsmIn *in; 868f7df22deSXiao Guangrong hwaddr dsm_mem_addr = val; 869f7df22deSXiao Guangrong 870f7df22deSXiao Guangrong nvdimm_debug("dsm memory address %#" HWADDR_PRIx ".\n", dsm_mem_addr); 871f7df22deSXiao Guangrong 872f7df22deSXiao Guangrong /* 873f7df22deSXiao Guangrong * The DSM memory is mapped to guest address space so an evil guest 874f7df22deSXiao Guangrong * can change its content while we are doing DSM emulation. Avoid 875f7df22deSXiao Guangrong * this by copying DSM memory to QEMU local memory. 876f7df22deSXiao Guangrong */ 87735c5a52dSPaolo Bonzini in = g_new(NvdimmDsmIn, 1); 87835c5a52dSPaolo Bonzini cpu_physical_memory_read(dsm_mem_addr, in, sizeof(*in)); 879f7df22deSXiao Guangrong 880f7df22deSXiao Guangrong le32_to_cpus(&in->revision); 881f7df22deSXiao Guangrong le32_to_cpus(&in->function); 882f7df22deSXiao Guangrong le32_to_cpus(&in->handle); 883f7df22deSXiao Guangrong 884f7df22deSXiao Guangrong nvdimm_debug("Revision %#x Handler %#x Function %#x.\n", in->revision, 885f7df22deSXiao Guangrong in->handle, in->function); 886f7df22deSXiao Guangrong 887d15fc53fSXiao Guangrong if (in->revision != 0x1 /* Currently we only support DSM Spec Rev1. */) { 888d15fc53fSXiao Guangrong nvdimm_debug("Revision %#x is not supported, expect %#x.\n", 889d15fc53fSXiao Guangrong in->revision, 0x1); 890c2fa3075SXiao Guangrong nvdimm_dsm_no_payload(NVDIMM_DSM_RET_STATUS_UNSUPPORT, dsm_mem_addr); 891d15fc53fSXiao Guangrong goto exit; 892d15fc53fSXiao Guangrong } 893d15fc53fSXiao Guangrong 894806864d9SXiao Guangrong if (in->handle == NVDIMM_QEMU_RSVD_HANDLE_ROOT) { 8955a33db78SXiao Guangrong nvdimm_dsm_handle_reserved_root_method(state, in, dsm_mem_addr); 896806864d9SXiao Guangrong goto exit; 897806864d9SXiao Guangrong } 898806864d9SXiao Guangrong 899189f4d56SXiao Guangrong /* Handle 0 is reserved for NVDIMM Root Device. */ 900189f4d56SXiao Guangrong if (!in->handle) { 901189f4d56SXiao Guangrong nvdimm_dsm_root(in, dsm_mem_addr); 902189f4d56SXiao Guangrong goto exit; 903f7df22deSXiao Guangrong } 904f7df22deSXiao Guangrong 905189f4d56SXiao Guangrong nvdimm_dsm_device(in, dsm_mem_addr); 906189f4d56SXiao Guangrong 907189f4d56SXiao Guangrong exit: 908f7df22deSXiao Guangrong g_free(in); 9095fe79386SXiao Guangrong } 9105fe79386SXiao Guangrong 9115fe79386SXiao Guangrong static const MemoryRegionOps nvdimm_dsm_ops = { 9125fe79386SXiao Guangrong .read = nvdimm_dsm_read, 9135fe79386SXiao Guangrong .write = nvdimm_dsm_write, 9145fe79386SXiao Guangrong .endianness = DEVICE_LITTLE_ENDIAN, 9155fe79386SXiao Guangrong .valid = { 9165fe79386SXiao Guangrong .min_access_size = 4, 9175fe79386SXiao Guangrong .max_access_size = 4, 9185fe79386SXiao Guangrong }, 9195fe79386SXiao Guangrong }; 9205fe79386SXiao Guangrong 92175f27498SXiao Guangrong void nvdimm_acpi_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev) 92275f27498SXiao Guangrong { 92375f27498SXiao Guangrong if (dev->hotplugged) { 92475f27498SXiao Guangrong acpi_send_event(DEVICE(hotplug_dev), ACPI_NVDIMM_HOTPLUG_STATUS); 92575f27498SXiao Guangrong } 92675f27498SXiao Guangrong } 92775f27498SXiao Guangrong 9285fe79386SXiao Guangrong void nvdimm_init_acpi_state(AcpiNVDIMMState *state, MemoryRegion *io, 9295fe79386SXiao Guangrong FWCfgState *fw_cfg, Object *owner) 9305fe79386SXiao Guangrong { 9315fe79386SXiao Guangrong memory_region_init_io(&state->io_mr, owner, &nvdimm_dsm_ops, state, 9325fe79386SXiao Guangrong "nvdimm-acpi-io", NVDIMM_ACPI_IO_LEN); 9335fe79386SXiao Guangrong memory_region_add_subregion(io, NVDIMM_ACPI_IO_BASE, &state->io_mr); 9345fe79386SXiao Guangrong 9355fe79386SXiao Guangrong state->dsm_mem = g_array_new(false, true /* clear */, 1); 93635c5a52dSPaolo Bonzini acpi_data_push(state->dsm_mem, sizeof(NvdimmDsmIn)); 9375fe79386SXiao Guangrong fw_cfg_add_file(fw_cfg, NVDIMM_DSM_MEM_FILE, state->dsm_mem->data, 9385fe79386SXiao Guangrong state->dsm_mem->len); 93975b0713eSXiao Guangrong 94075b0713eSXiao Guangrong nvdimm_init_fit_buffer(&state->fit_buf); 9415fe79386SXiao Guangrong } 9425fe79386SXiao Guangrong 94377286395SXiao Guangrong #define NVDIMM_COMMON_DSM "NCAL" 944b9951413SXiao Guangrong #define NVDIMM_ACPI_MEM_ADDR "MEMA" 94577286395SXiao Guangrong 9463ae66c45SXiao Guangrong #define NVDIMM_DSM_MEMORY "NRAM" 9473ae66c45SXiao Guangrong #define NVDIMM_DSM_IOPORT "NPIO" 9483ae66c45SXiao Guangrong 9493ae66c45SXiao Guangrong #define NVDIMM_DSM_NOTIFY "NTFI" 9503ae66c45SXiao Guangrong #define NVDIMM_DSM_HANDLE "HDLE" 9513ae66c45SXiao Guangrong #define NVDIMM_DSM_REVISION "REVS" 9523ae66c45SXiao Guangrong #define NVDIMM_DSM_FUNCTION "FUNC" 9533ae66c45SXiao Guangrong #define NVDIMM_DSM_ARG3 "FARG" 9543ae66c45SXiao Guangrong 9553ae66c45SXiao Guangrong #define NVDIMM_DSM_OUT_BUF_SIZE "RLEN" 9563ae66c45SXiao Guangrong #define NVDIMM_DSM_OUT_BUF "ODAT" 9573ae66c45SXiao Guangrong 958806864d9SXiao Guangrong #define NVDIMM_DSM_RFIT_STATUS "RSTA" 959806864d9SXiao Guangrong 960806864d9SXiao Guangrong #define NVDIMM_QEMU_RSVD_UUID "648B9CF2-CDA1-4312-8AD9-49C4AF32BD62" 961806864d9SXiao Guangrong 96277286395SXiao Guangrong static void nvdimm_build_common_dsm(Aml *dev) 96377286395SXiao Guangrong { 964806864d9SXiao Guangrong Aml *method, *ifctx, *function, *handle, *uuid, *dsm_mem, *elsectx2; 96590623ebfSXiao Guangrong Aml *elsectx, *unsupport, *unpatched, *expected_uuid, *uuid_invalid; 966fa1a448dSXiao Guangrong Aml *pckg, *pckg_index, *pckg_buf, *field, *dsm_out_buf, *dsm_out_buf_size; 96777286395SXiao Guangrong uint8_t byte_list[1]; 96877286395SXiao Guangrong 969732b530cSXiao Guangrong method = aml_method(NVDIMM_COMMON_DSM, 5, AML_SERIALIZED); 97090623ebfSXiao Guangrong uuid = aml_arg(0); 97177286395SXiao Guangrong function = aml_arg(2); 97290623ebfSXiao Guangrong handle = aml_arg(4); 973c0b3b863SXiao Guangrong dsm_mem = aml_local(6); 97448bee476SXiao Guangrong dsm_out_buf = aml_local(7); 975c0b3b863SXiao Guangrong 976c0b3b863SXiao Guangrong aml_append(method, aml_store(aml_name(NVDIMM_ACPI_MEM_ADDR), dsm_mem)); 977c0b3b863SXiao Guangrong 978c0b3b863SXiao Guangrong /* map DSM memory and IO into ACPI namespace. */ 9793ae66c45SXiao Guangrong aml_append(method, aml_operation_region(NVDIMM_DSM_IOPORT, AML_SYSTEM_IO, 980c0b3b863SXiao Guangrong aml_int(NVDIMM_ACPI_IO_BASE), NVDIMM_ACPI_IO_LEN)); 9813ae66c45SXiao Guangrong aml_append(method, aml_operation_region(NVDIMM_DSM_MEMORY, 9823ae66c45SXiao Guangrong AML_SYSTEM_MEMORY, dsm_mem, sizeof(NvdimmDsmIn))); 983c0b3b863SXiao Guangrong 984c0b3b863SXiao Guangrong /* 985c0b3b863SXiao Guangrong * DSM notifier: 9863ae66c45SXiao Guangrong * NVDIMM_DSM_NOTIFY: write the address of DSM memory and notify QEMU to 9873ae66c45SXiao Guangrong * emulate the access. 988c0b3b863SXiao Guangrong * 989c0b3b863SXiao Guangrong * It is the IO port so that accessing them will cause VM-exit, the 990c0b3b863SXiao Guangrong * control will be transferred to QEMU. 991c0b3b863SXiao Guangrong */ 9923ae66c45SXiao Guangrong field = aml_field(NVDIMM_DSM_IOPORT, AML_DWORD_ACC, AML_NOLOCK, 9933ae66c45SXiao Guangrong AML_PRESERVE); 9943ae66c45SXiao Guangrong aml_append(field, aml_named_field(NVDIMM_DSM_NOTIFY, 995c0b3b863SXiao Guangrong sizeof(uint32_t) * BITS_PER_BYTE)); 996c0b3b863SXiao Guangrong aml_append(method, field); 997c0b3b863SXiao Guangrong 998c0b3b863SXiao Guangrong /* 999c0b3b863SXiao Guangrong * DSM input: 10003ae66c45SXiao Guangrong * NVDIMM_DSM_HANDLE: store device's handle, it's zero if the _DSM call 10013ae66c45SXiao Guangrong * happens on NVDIMM Root Device. 10023ae66c45SXiao Guangrong * NVDIMM_DSM_REVISION: store the Arg1 of _DSM call. 10033ae66c45SXiao Guangrong * NVDIMM_DSM_FUNCTION: store the Arg2 of _DSM call. 10043ae66c45SXiao Guangrong * NVDIMM_DSM_ARG3: store the Arg3 of _DSM call which is a Package 10053ae66c45SXiao Guangrong * containing function-specific arguments. 1006c0b3b863SXiao Guangrong * 1007c0b3b863SXiao Guangrong * They are RAM mapping on host so that these accesses never cause 1008c0b3b863SXiao Guangrong * VM-EXIT. 1009c0b3b863SXiao Guangrong */ 10103ae66c45SXiao Guangrong field = aml_field(NVDIMM_DSM_MEMORY, AML_DWORD_ACC, AML_NOLOCK, 10113ae66c45SXiao Guangrong AML_PRESERVE); 10123ae66c45SXiao Guangrong aml_append(field, aml_named_field(NVDIMM_DSM_HANDLE, 1013c0b3b863SXiao Guangrong sizeof(typeof_field(NvdimmDsmIn, handle)) * BITS_PER_BYTE)); 10143ae66c45SXiao Guangrong aml_append(field, aml_named_field(NVDIMM_DSM_REVISION, 1015c0b3b863SXiao Guangrong sizeof(typeof_field(NvdimmDsmIn, revision)) * BITS_PER_BYTE)); 10163ae66c45SXiao Guangrong aml_append(field, aml_named_field(NVDIMM_DSM_FUNCTION, 1017c0b3b863SXiao Guangrong sizeof(typeof_field(NvdimmDsmIn, function)) * BITS_PER_BYTE)); 10183ae66c45SXiao Guangrong aml_append(field, aml_named_field(NVDIMM_DSM_ARG3, 1019c0b3b863SXiao Guangrong (sizeof(NvdimmDsmIn) - offsetof(NvdimmDsmIn, arg3)) * BITS_PER_BYTE)); 1020c0b3b863SXiao Guangrong aml_append(method, field); 1021c0b3b863SXiao Guangrong 1022c0b3b863SXiao Guangrong /* 1023c0b3b863SXiao Guangrong * DSM output: 10243ae66c45SXiao Guangrong * NVDIMM_DSM_OUT_BUF_SIZE: the size of the buffer filled by QEMU. 10253ae66c45SXiao Guangrong * NVDIMM_DSM_OUT_BUF: the buffer QEMU uses to store the result. 1026c0b3b863SXiao Guangrong * 1027c0b3b863SXiao Guangrong * Since the page is reused by both input and out, the input data 1028c0b3b863SXiao Guangrong * will be lost after storing new result into ODAT so we should fetch 1029c0b3b863SXiao Guangrong * all the input data before writing the result. 1030c0b3b863SXiao Guangrong */ 10313ae66c45SXiao Guangrong field = aml_field(NVDIMM_DSM_MEMORY, AML_DWORD_ACC, AML_NOLOCK, 10323ae66c45SXiao Guangrong AML_PRESERVE); 10333ae66c45SXiao Guangrong aml_append(field, aml_named_field(NVDIMM_DSM_OUT_BUF_SIZE, 1034c0b3b863SXiao Guangrong sizeof(typeof_field(NvdimmDsmOut, len)) * BITS_PER_BYTE)); 10353ae66c45SXiao Guangrong aml_append(field, aml_named_field(NVDIMM_DSM_OUT_BUF, 1036c0b3b863SXiao Guangrong (sizeof(NvdimmDsmOut) - offsetof(NvdimmDsmOut, data)) * BITS_PER_BYTE)); 1037c0b3b863SXiao Guangrong aml_append(method, field); 103818c440e1SXiao Guangrong 103918c440e1SXiao Guangrong /* 104018c440e1SXiao Guangrong * do not support any method if DSM memory address has not been 104118c440e1SXiao Guangrong * patched. 104218c440e1SXiao Guangrong */ 104390623ebfSXiao Guangrong unpatched = aml_equal(dsm_mem, aml_int(0x0)); 104490623ebfSXiao Guangrong 104590623ebfSXiao Guangrong expected_uuid = aml_local(0); 104690623ebfSXiao Guangrong 104790623ebfSXiao Guangrong ifctx = aml_if(aml_equal(handle, aml_int(0x0))); 104890623ebfSXiao Guangrong aml_append(ifctx, aml_store( 104990623ebfSXiao Guangrong aml_touuid("2F10E7A4-9E91-11E4-89D3-123B93F75CBA") 105090623ebfSXiao Guangrong /* UUID for NVDIMM Root Device */, expected_uuid)); 105190623ebfSXiao Guangrong aml_append(method, ifctx); 105290623ebfSXiao Guangrong elsectx = aml_else(); 1053806864d9SXiao Guangrong ifctx = aml_if(aml_equal(handle, aml_int(NVDIMM_QEMU_RSVD_HANDLE_ROOT))); 1054806864d9SXiao Guangrong aml_append(ifctx, aml_store(aml_touuid(NVDIMM_QEMU_RSVD_UUID 1055806864d9SXiao Guangrong /* UUID for QEMU internal use */), expected_uuid)); 1056806864d9SXiao Guangrong aml_append(elsectx, ifctx); 1057806864d9SXiao Guangrong elsectx2 = aml_else(); 1058806864d9SXiao Guangrong aml_append(elsectx2, aml_store( 105990623ebfSXiao Guangrong aml_touuid("4309AC30-0D11-11E4-9191-0800200C9A66") 106090623ebfSXiao Guangrong /* UUID for NVDIMM Devices */, expected_uuid)); 1061806864d9SXiao Guangrong aml_append(elsectx, elsectx2); 106290623ebfSXiao Guangrong aml_append(method, elsectx); 106390623ebfSXiao Guangrong 106490623ebfSXiao Guangrong uuid_invalid = aml_lnot(aml_equal(uuid, expected_uuid)); 106590623ebfSXiao Guangrong 106690623ebfSXiao Guangrong unsupport = aml_if(aml_or(unpatched, uuid_invalid, NULL)); 106777286395SXiao Guangrong 106877286395SXiao Guangrong /* 106977286395SXiao Guangrong * function 0 is called to inquire what functions are supported by 107077286395SXiao Guangrong * OSPM 107177286395SXiao Guangrong */ 107277286395SXiao Guangrong ifctx = aml_if(aml_equal(function, aml_int(0))); 107377286395SXiao Guangrong byte_list[0] = 0 /* No function Supported */; 107477286395SXiao Guangrong aml_append(ifctx, aml_return(aml_buffer(1, byte_list))); 107590623ebfSXiao Guangrong aml_append(unsupport, ifctx); 107677286395SXiao Guangrong 107777286395SXiao Guangrong /* No function is supported yet. */ 1078c2fa3075SXiao Guangrong byte_list[0] = NVDIMM_DSM_RET_STATUS_UNSUPPORT; 107990623ebfSXiao Guangrong aml_append(unsupport, aml_return(aml_buffer(1, byte_list))); 108090623ebfSXiao Guangrong aml_append(method, unsupport); 108177286395SXiao Guangrong 108218c440e1SXiao Guangrong /* 108318c440e1SXiao Guangrong * The HDLE indicates the DSM function is issued from which device, 1084732b530cSXiao Guangrong * it reserves 0 for root device and is the handle for NVDIMM devices. 1085732b530cSXiao Guangrong * See the comments in nvdimm_slot_to_handle(). 108618c440e1SXiao Guangrong */ 10873ae66c45SXiao Guangrong aml_append(method, aml_store(handle, aml_name(NVDIMM_DSM_HANDLE))); 10883ae66c45SXiao Guangrong aml_append(method, aml_store(aml_arg(1), aml_name(NVDIMM_DSM_REVISION))); 10893ae66c45SXiao Guangrong aml_append(method, aml_store(aml_arg(2), aml_name(NVDIMM_DSM_FUNCTION))); 109018c440e1SXiao Guangrong 109118c440e1SXiao Guangrong /* 10924568c948SXiao Guangrong * The fourth parameter (Arg3) of _DSM is a package which contains 10934568c948SXiao Guangrong * a buffer, the layout of the buffer is specified by UUID (Arg0), 10944568c948SXiao Guangrong * Revision ID (Arg1) and Function Index (Arg2) which are documented 10954568c948SXiao Guangrong * in the DSM Spec. 10964568c948SXiao Guangrong */ 10974568c948SXiao Guangrong pckg = aml_arg(3); 10984568c948SXiao Guangrong ifctx = aml_if(aml_and(aml_equal(aml_object_type(pckg), 10994568c948SXiao Guangrong aml_int(4 /* Package */)) /* It is a Package? */, 11004568c948SXiao Guangrong aml_equal(aml_sizeof(pckg), aml_int(1)) /* 1 element? */, 11014568c948SXiao Guangrong NULL)); 11024568c948SXiao Guangrong 11034568c948SXiao Guangrong pckg_index = aml_local(2); 11044568c948SXiao Guangrong pckg_buf = aml_local(3); 11054568c948SXiao Guangrong aml_append(ifctx, aml_store(aml_index(pckg, aml_int(0)), pckg_index)); 11064568c948SXiao Guangrong aml_append(ifctx, aml_store(aml_derefof(pckg_index), pckg_buf)); 11073ae66c45SXiao Guangrong aml_append(ifctx, aml_store(pckg_buf, aml_name(NVDIMM_DSM_ARG3))); 11084568c948SXiao Guangrong aml_append(method, ifctx); 11094568c948SXiao Guangrong 11104568c948SXiao Guangrong /* 111118c440e1SXiao Guangrong * tell QEMU about the real address of DSM memory, then QEMU 111218c440e1SXiao Guangrong * gets the control and fills the result in DSM memory. 111318c440e1SXiao Guangrong */ 11143ae66c45SXiao Guangrong aml_append(method, aml_store(dsm_mem, aml_name(NVDIMM_DSM_NOTIFY))); 111518c440e1SXiao Guangrong 1116fa1a448dSXiao Guangrong dsm_out_buf_size = aml_local(1); 1117d51d1d7eSXiao Guangrong /* RLEN is not included in the payload returned to guest. */ 11183ae66c45SXiao Guangrong aml_append(method, aml_subtract(aml_name(NVDIMM_DSM_OUT_BUF_SIZE), 11193ae66c45SXiao Guangrong aml_int(4), dsm_out_buf_size)); 1120fa1a448dSXiao Guangrong aml_append(method, aml_store(aml_shiftleft(dsm_out_buf_size, aml_int(3)), 1121fa1a448dSXiao Guangrong dsm_out_buf_size)); 11223ae66c45SXiao Guangrong aml_append(method, aml_create_field(aml_name(NVDIMM_DSM_OUT_BUF), 11233ae66c45SXiao Guangrong aml_int(0), dsm_out_buf_size, "OBUF")); 112418c440e1SXiao Guangrong aml_append(method, aml_concatenate(aml_buffer(0, NULL), aml_name("OBUF"), 112548bee476SXiao Guangrong dsm_out_buf)); 112648bee476SXiao Guangrong aml_append(method, aml_return(dsm_out_buf)); 112777286395SXiao Guangrong aml_append(dev, method); 112877286395SXiao Guangrong } 112977286395SXiao Guangrong 1130732b530cSXiao Guangrong static void nvdimm_build_device_dsm(Aml *dev, uint32_t handle) 113177286395SXiao Guangrong { 113277286395SXiao Guangrong Aml *method; 113377286395SXiao Guangrong 113477286395SXiao Guangrong method = aml_method("_DSM", 4, AML_NOTSERIALIZED); 1135732b530cSXiao Guangrong aml_append(method, aml_return(aml_call5(NVDIMM_COMMON_DSM, aml_arg(0), 1136732b530cSXiao Guangrong aml_arg(1), aml_arg(2), aml_arg(3), 1137732b530cSXiao Guangrong aml_int(handle)))); 113877286395SXiao Guangrong aml_append(dev, method); 113977286395SXiao Guangrong } 114077286395SXiao Guangrong 1141806864d9SXiao Guangrong static void nvdimm_build_fit(Aml *dev) 1142806864d9SXiao Guangrong { 1143806864d9SXiao Guangrong Aml *method, *pkg, *buf, *buf_size, *offset, *call_result; 1144806864d9SXiao Guangrong Aml *whilectx, *ifcond, *ifctx, *elsectx, *fit; 1145806864d9SXiao Guangrong 1146806864d9SXiao Guangrong buf = aml_local(0); 1147806864d9SXiao Guangrong buf_size = aml_local(1); 1148806864d9SXiao Guangrong fit = aml_local(2); 1149806864d9SXiao Guangrong 1150aef056c1SXiao Guangrong aml_append(dev, aml_name_decl(NVDIMM_DSM_RFIT_STATUS, aml_int(0))); 1151806864d9SXiao Guangrong 1152806864d9SXiao Guangrong /* build helper function, RFIT. */ 1153806864d9SXiao Guangrong method = aml_method("RFIT", 1, AML_SERIALIZED); 1154aef056c1SXiao Guangrong aml_append(method, aml_name_decl("OFST", aml_int(0))); 1155806864d9SXiao Guangrong 1156806864d9SXiao Guangrong /* prepare input package. */ 1157806864d9SXiao Guangrong pkg = aml_package(1); 1158806864d9SXiao Guangrong aml_append(method, aml_store(aml_arg(0), aml_name("OFST"))); 1159806864d9SXiao Guangrong aml_append(pkg, aml_name("OFST")); 1160806864d9SXiao Guangrong 1161806864d9SXiao Guangrong /* call Read_FIT function. */ 1162806864d9SXiao Guangrong call_result = aml_call5(NVDIMM_COMMON_DSM, 1163806864d9SXiao Guangrong aml_touuid(NVDIMM_QEMU_RSVD_UUID), 1164806864d9SXiao Guangrong aml_int(1) /* Revision 1 */, 1165806864d9SXiao Guangrong aml_int(0x1) /* Read FIT */, 1166806864d9SXiao Guangrong pkg, aml_int(NVDIMM_QEMU_RSVD_HANDLE_ROOT)); 1167806864d9SXiao Guangrong aml_append(method, aml_store(call_result, buf)); 1168806864d9SXiao Guangrong 1169806864d9SXiao Guangrong /* handle _DSM result. */ 1170806864d9SXiao Guangrong aml_append(method, aml_create_dword_field(buf, 1171806864d9SXiao Guangrong aml_int(0) /* offset at byte 0 */, "STAU")); 1172806864d9SXiao Guangrong 1173806864d9SXiao Guangrong aml_append(method, aml_store(aml_name("STAU"), 1174806864d9SXiao Guangrong aml_name(NVDIMM_DSM_RFIT_STATUS))); 1175806864d9SXiao Guangrong 1176806864d9SXiao Guangrong /* if something is wrong during _DSM. */ 1177c2fa3075SXiao Guangrong ifcond = aml_equal(aml_int(NVDIMM_DSM_RET_STATUS_SUCCESS), 1178c2fa3075SXiao Guangrong aml_name("STAU")); 1179806864d9SXiao Guangrong ifctx = aml_if(aml_lnot(ifcond)); 1180806864d9SXiao Guangrong aml_append(ifctx, aml_return(aml_buffer(0, NULL))); 1181806864d9SXiao Guangrong aml_append(method, ifctx); 1182806864d9SXiao Guangrong 1183806864d9SXiao Guangrong aml_append(method, aml_store(aml_sizeof(buf), buf_size)); 1184806864d9SXiao Guangrong aml_append(method, aml_subtract(buf_size, 1185806864d9SXiao Guangrong aml_int(4) /* the size of "STAU" */, 1186806864d9SXiao Guangrong buf_size)); 1187806864d9SXiao Guangrong 1188806864d9SXiao Guangrong /* if we read the end of fit. */ 1189806864d9SXiao Guangrong ifctx = aml_if(aml_equal(buf_size, aml_int(0))); 1190806864d9SXiao Guangrong aml_append(ifctx, aml_return(aml_buffer(0, NULL))); 1191806864d9SXiao Guangrong aml_append(method, ifctx); 1192806864d9SXiao Guangrong 1193806864d9SXiao Guangrong aml_append(method, aml_create_field(buf, 1194806864d9SXiao Guangrong aml_int(4 * BITS_PER_BYTE), /* offset at byte 4.*/ 1195880f3612SXiao Guangrong aml_shiftleft(buf_size, aml_int(3)), "BUFF")); 1196806864d9SXiao Guangrong aml_append(method, aml_return(aml_name("BUFF"))); 1197806864d9SXiao Guangrong aml_append(dev, method); 1198806864d9SXiao Guangrong 1199806864d9SXiao Guangrong /* build _FIT. */ 1200806864d9SXiao Guangrong method = aml_method("_FIT", 0, AML_SERIALIZED); 1201806864d9SXiao Guangrong offset = aml_local(3); 1202806864d9SXiao Guangrong 1203806864d9SXiao Guangrong aml_append(method, aml_store(aml_buffer(0, NULL), fit)); 1204806864d9SXiao Guangrong aml_append(method, aml_store(aml_int(0), offset)); 1205806864d9SXiao Guangrong 1206806864d9SXiao Guangrong whilectx = aml_while(aml_int(1)); 1207806864d9SXiao Guangrong aml_append(whilectx, aml_store(aml_call1("RFIT", offset), buf)); 1208806864d9SXiao Guangrong aml_append(whilectx, aml_store(aml_sizeof(buf), buf_size)); 1209806864d9SXiao Guangrong 1210806864d9SXiao Guangrong /* 1211806864d9SXiao Guangrong * if fit buffer was changed during RFIT, read from the beginning 1212806864d9SXiao Guangrong * again. 1213806864d9SXiao Guangrong */ 1214806864d9SXiao Guangrong ifctx = aml_if(aml_equal(aml_name(NVDIMM_DSM_RFIT_STATUS), 1215c2fa3075SXiao Guangrong aml_int(NVDIMM_DSM_RET_STATUS_FIT_CHANGED))); 1216806864d9SXiao Guangrong aml_append(ifctx, aml_store(aml_buffer(0, NULL), fit)); 1217806864d9SXiao Guangrong aml_append(ifctx, aml_store(aml_int(0), offset)); 1218806864d9SXiao Guangrong aml_append(whilectx, ifctx); 1219806864d9SXiao Guangrong 1220806864d9SXiao Guangrong elsectx = aml_else(); 1221806864d9SXiao Guangrong 1222806864d9SXiao Guangrong /* finish fit read if no data is read out. */ 1223806864d9SXiao Guangrong ifctx = aml_if(aml_equal(buf_size, aml_int(0))); 1224806864d9SXiao Guangrong aml_append(ifctx, aml_return(fit)); 1225806864d9SXiao Guangrong aml_append(elsectx, ifctx); 1226806864d9SXiao Guangrong 1227806864d9SXiao Guangrong /* update the offset. */ 1228806864d9SXiao Guangrong aml_append(elsectx, aml_add(offset, buf_size, offset)); 1229806864d9SXiao Guangrong /* append the data we read out to the fit buffer. */ 1230806864d9SXiao Guangrong aml_append(elsectx, aml_concatenate(fit, buf, fit)); 1231806864d9SXiao Guangrong aml_append(whilectx, elsectx); 1232806864d9SXiao Guangrong aml_append(method, whilectx); 1233806864d9SXiao Guangrong 1234806864d9SXiao Guangrong aml_append(dev, method); 1235806864d9SXiao Guangrong } 1236806864d9SXiao Guangrong 1237bdfd065bSXiao Guangrong static void nvdimm_build_nvdimm_devices(Aml *root_dev, uint32_t ram_slots) 123877286395SXiao Guangrong { 1239bdfd065bSXiao Guangrong uint32_t slot; 1240bdfd065bSXiao Guangrong 1241bdfd065bSXiao Guangrong for (slot = 0; slot < ram_slots; slot++) { 124277286395SXiao Guangrong uint32_t handle = nvdimm_slot_to_handle(slot); 124377286395SXiao Guangrong Aml *nvdimm_dev; 124477286395SXiao Guangrong 124577286395SXiao Guangrong nvdimm_dev = aml_device("NV%02X", slot); 124677286395SXiao Guangrong 124777286395SXiao Guangrong /* 124877286395SXiao Guangrong * ACPI 6.0: 9.20 NVDIMM Devices: 124977286395SXiao Guangrong * 125077286395SXiao Guangrong * _ADR object that is used to supply OSPM with unique address 125177286395SXiao Guangrong * of the NVDIMM device. This is done by returning the NFIT Device 125277286395SXiao Guangrong * handle that is used to identify the associated entries in ACPI 125377286395SXiao Guangrong * table NFIT or _FIT. 125477286395SXiao Guangrong */ 125577286395SXiao Guangrong aml_append(nvdimm_dev, aml_name_decl("_ADR", aml_int(handle))); 125677286395SXiao Guangrong 1257732b530cSXiao Guangrong nvdimm_build_device_dsm(nvdimm_dev, handle); 125877286395SXiao Guangrong aml_append(root_dev, nvdimm_dev); 125977286395SXiao Guangrong } 126077286395SXiao Guangrong } 126177286395SXiao Guangrong 1262bdfd065bSXiao Guangrong static void nvdimm_build_ssdt(GArray *table_offsets, GArray *table_data, 1263bdfd065bSXiao Guangrong BIOSLinker *linker, GArray *dsm_dma_arrea, 1264bdfd065bSXiao Guangrong uint32_t ram_slots) 126577286395SXiao Guangrong { 1266c0b3b863SXiao Guangrong Aml *ssdt, *sb_scope, *dev; 1267b9951413SXiao Guangrong int mem_addr_offset, nvdimm_ssdt; 126877286395SXiao Guangrong 126977286395SXiao Guangrong acpi_add_table(table_offsets, table_data); 127077286395SXiao Guangrong 127177286395SXiao Guangrong ssdt = init_aml_allocator(); 127277286395SXiao Guangrong acpi_data_push(ssdt->buf, sizeof(AcpiTableHeader)); 127377286395SXiao Guangrong 127477286395SXiao Guangrong sb_scope = aml_scope("\\_SB"); 127577286395SXiao Guangrong 127677286395SXiao Guangrong dev = aml_device("NVDR"); 127777286395SXiao Guangrong 127877286395SXiao Guangrong /* 127977286395SXiao Guangrong * ACPI 6.0: 9.20 NVDIMM Devices: 128077286395SXiao Guangrong * 128177286395SXiao Guangrong * The ACPI Name Space device uses _HID of ACPI0012 to identify the root 128277286395SXiao Guangrong * NVDIMM interface device. Platform firmware is required to contain one 128377286395SXiao Guangrong * such device in _SB scope if NVDIMMs support is exposed by platform to 128477286395SXiao Guangrong * OSPM. 128577286395SXiao Guangrong * For each NVDIMM present or intended to be supported by platform, 128677286395SXiao Guangrong * platform firmware also exposes an ACPI Namespace Device under the 128777286395SXiao Guangrong * root device. 128877286395SXiao Guangrong */ 128977286395SXiao Guangrong aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0012"))); 129077286395SXiao Guangrong 129177286395SXiao Guangrong nvdimm_build_common_dsm(dev); 1292732b530cSXiao Guangrong 1293732b530cSXiao Guangrong /* 0 is reserved for root device. */ 1294732b530cSXiao Guangrong nvdimm_build_device_dsm(dev, 0); 1295806864d9SXiao Guangrong nvdimm_build_fit(dev); 129677286395SXiao Guangrong 1297bdfd065bSXiao Guangrong nvdimm_build_nvdimm_devices(dev, ram_slots); 129877286395SXiao Guangrong 129977286395SXiao Guangrong aml_append(sb_scope, dev); 130077286395SXiao Guangrong aml_append(ssdt, sb_scope); 1301b9951413SXiao Guangrong 1302b9951413SXiao Guangrong nvdimm_ssdt = table_data->len; 1303b9951413SXiao Guangrong 130477286395SXiao Guangrong /* copy AML table into ACPI tables blob and patch header there */ 130577286395SXiao Guangrong g_array_append_vals(table_data, ssdt->buf->data, ssdt->buf->len); 1306b9951413SXiao Guangrong mem_addr_offset = build_append_named_dword(table_data, 1307b9951413SXiao Guangrong NVDIMM_ACPI_MEM_ADDR); 1308b9951413SXiao Guangrong 1309ad9671b8SIgor Mammedov bios_linker_loader_alloc(linker, 1310ad9671b8SIgor Mammedov NVDIMM_DSM_MEM_FILE, dsm_dma_arrea, 1311ad9671b8SIgor Mammedov sizeof(NvdimmDsmIn), false /* high memory */); 13124678124bSIgor Mammedov bios_linker_loader_add_pointer(linker, 13134678124bSIgor Mammedov ACPI_BUILD_TABLE_FILE, mem_addr_offset, sizeof(uint32_t), 13144678124bSIgor Mammedov NVDIMM_DSM_MEM_FILE, 0); 131577286395SXiao Guangrong build_header(linker, table_data, 1316b9951413SXiao Guangrong (void *)(table_data->data + nvdimm_ssdt), 1317b9951413SXiao Guangrong "SSDT", table_data->len - nvdimm_ssdt, 1, NULL, "NVDIMM"); 131877286395SXiao Guangrong free_aml_allocator(); 131977286395SXiao Guangrong } 132077286395SXiao Guangrong 132187252e1bSXiao Guangrong void nvdimm_build_acpi(GArray *table_offsets, GArray *table_data, 132275b0713eSXiao Guangrong BIOSLinker *linker, AcpiNVDIMMState *state, 1323bdfd065bSXiao Guangrong uint32_t ram_slots) 132487252e1bSXiao Guangrong { 1325264813cbSXiao Guangrong GSList *device_list; 1326bdfd065bSXiao Guangrong 1327264813cbSXiao Guangrong /* no nvdimm device can be plugged. */ 1328264813cbSXiao Guangrong if (!ram_slots) { 1329264813cbSXiao Guangrong return; 1330264813cbSXiao Guangrong } 1331264813cbSXiao Guangrong 133275b0713eSXiao Guangrong nvdimm_build_ssdt(table_offsets, table_data, linker, state->dsm_mem, 1333bdfd065bSXiao Guangrong ram_slots); 1334264813cbSXiao Guangrong 1335cf7c0ff5SXiao Guangrong device_list = nvdimm_get_device_list(); 1336264813cbSXiao Guangrong /* no NVDIMM device is plugged. */ 1337264813cbSXiao Guangrong if (!device_list) { 1338264813cbSXiao Guangrong return; 1339bdfd065bSXiao Guangrong } 1340264813cbSXiao Guangrong 1341264813cbSXiao Guangrong nvdimm_build_nfit(state, table_offsets, table_data, linker); 1342264813cbSXiao Guangrong g_slist_free(device_list); 1343bdfd065bSXiao Guangrong } 1344