diff options
author | 2017-04-25 03:31:15 -0700 | |
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committer | 2017-05-22 06:48:08 +0000 | |
commit | bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch) | |
tree | ca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/hw/acpi/nvdimm.c | |
parent | a14b48d18a9ed03ec191cf16b162206998a895ce (diff) |
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/hw/acpi/nvdimm.c')
-rw-r--r-- | qemu/hw/acpi/nvdimm.c | 706 |
1 files changed, 0 insertions, 706 deletions
diff --git a/qemu/hw/acpi/nvdimm.c b/qemu/hw/acpi/nvdimm.c deleted file mode 100644 index 9531340e5..000000000 --- a/qemu/hw/acpi/nvdimm.c +++ /dev/null @@ -1,706 +0,0 @@ -/* - * NVDIMM ACPI Implementation - * - * Copyright(C) 2015 Intel Corporation. - * - * Author: - * Xiao Guangrong <guangrong.xiao@linux.intel.com> - * - * NFIT is defined in ACPI 6.0: 5.2.25 NVDIMM Firmware Interface Table (NFIT) - * and the DSM specification can be found at: - * http://pmem.io/documents/NVDIMM_DSM_Interface_Example.pdf - * - * Currently, it only supports PMEM Virtualization. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see <http://www.gnu.org/licenses/> - */ - -#include "qemu/osdep.h" -#include "hw/acpi/acpi.h" -#include "hw/acpi/aml-build.h" -#include "hw/acpi/bios-linker-loader.h" -#include "hw/nvram/fw_cfg.h" -#include "hw/mem/nvdimm.h" - -static int nvdimm_plugged_device_list(Object *obj, void *opaque) -{ - GSList **list = opaque; - - if (object_dynamic_cast(obj, TYPE_NVDIMM)) { - DeviceState *dev = DEVICE(obj); - - if (dev->realized) { /* only realized NVDIMMs matter */ - *list = g_slist_append(*list, DEVICE(obj)); - } - } - - object_child_foreach(obj, nvdimm_plugged_device_list, opaque); - return 0; -} - -/* - * inquire plugged NVDIMM devices and link them into the list which is - * returned to the caller. - * - * Note: it is the caller's responsibility to free the list to avoid - * memory leak. - */ -static GSList *nvdimm_get_plugged_device_list(void) -{ - GSList *list = NULL; - - object_child_foreach(qdev_get_machine(), nvdimm_plugged_device_list, - &list); - return list; -} - -#define NVDIMM_UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ - { (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ - (b) & 0xff, ((b) >> 8) & 0xff, (c) & 0xff, ((c) >> 8) & 0xff, \ - (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) } - -/* - * define Byte Addressable Persistent Memory (PM) Region according to - * ACPI 6.0: 5.2.25.1 System Physical Address Range Structure. - */ -static const uint8_t nvdimm_nfit_spa_uuid[] = - NVDIMM_UUID_LE(0x66f0d379, 0xb4f3, 0x4074, 0xac, 0x43, 0x0d, 0x33, - 0x18, 0xb7, 0x8c, 0xdb); - -/* - * NVDIMM Firmware Interface Table - * @signature: "NFIT" - * - * It provides information that allows OSPM to enumerate NVDIMM present in - * the platform and associate system physical address ranges created by the - * NVDIMMs. - * - * It is defined in ACPI 6.0: 5.2.25 NVDIMM Firmware Interface Table (NFIT) - */ -struct NvdimmNfitHeader { - ACPI_TABLE_HEADER_DEF - uint32_t reserved; -} QEMU_PACKED; -typedef struct NvdimmNfitHeader NvdimmNfitHeader; - -/* - * define NFIT structures according to ACPI 6.0: 5.2.25 NVDIMM Firmware - * Interface Table (NFIT). - */ - -/* - * System Physical Address Range Structure - * - * It describes the system physical address ranges occupied by NVDIMMs and - * the types of the regions. - */ -struct NvdimmNfitSpa { - uint16_t type; - uint16_t length; - uint16_t spa_index; - uint16_t flags; - uint32_t reserved; - uint32_t proximity_domain; - uint8_t type_guid[16]; - uint64_t spa_base; - uint64_t spa_length; - uint64_t mem_attr; -} QEMU_PACKED; -typedef struct NvdimmNfitSpa NvdimmNfitSpa; - -/* - * Memory Device to System Physical Address Range Mapping Structure - * - * It enables identifying each NVDIMM region and the corresponding SPA - * describing the memory interleave - */ -struct NvdimmNfitMemDev { - uint16_t type; - uint16_t length; - uint32_t nfit_handle; - uint16_t phys_id; - uint16_t region_id; - uint16_t spa_index; - uint16_t dcr_index; - uint64_t region_len; - uint64_t region_offset; - uint64_t region_dpa; - uint16_t interleave_index; - uint16_t interleave_ways; - uint16_t flags; - uint16_t reserved; -} QEMU_PACKED; -typedef struct NvdimmNfitMemDev NvdimmNfitMemDev; - -/* - * NVDIMM Control Region Structure - * - * It describes the NVDIMM and if applicable, Block Control Window. - */ -struct NvdimmNfitControlRegion { - uint16_t type; - uint16_t length; - uint16_t dcr_index; - uint16_t vendor_id; - uint16_t device_id; - uint16_t revision_id; - uint16_t sub_vendor_id; - uint16_t sub_device_id; - uint16_t sub_revision_id; - uint8_t reserved[6]; - uint32_t serial_number; - uint16_t fic; - uint16_t num_bcw; - uint64_t bcw_size; - uint64_t cmd_offset; - uint64_t cmd_size; - uint64_t status_offset; - uint64_t status_size; - uint16_t flags; - uint8_t reserved2[6]; -} QEMU_PACKED; -typedef struct NvdimmNfitControlRegion NvdimmNfitControlRegion; - -/* - * Module serial number is a unique number for each device. We use the - * slot id of NVDIMM device to generate this number so that each device - * associates with a different number. - * - * 0x123456 is a magic number we arbitrarily chose. - */ -static uint32_t nvdimm_slot_to_sn(int slot) -{ - return 0x123456 + slot; -} - -/* - * handle is used to uniquely associate nfit_memdev structure with NVDIMM - * ACPI device - nfit_memdev.nfit_handle matches with the value returned - * by ACPI device _ADR method. - * - * We generate the handle with the slot id of NVDIMM device and reserve - * 0 for NVDIMM root device. - */ -static uint32_t nvdimm_slot_to_handle(int slot) -{ - return slot + 1; -} - -/* - * index uniquely identifies the structure, 0 is reserved which indicates - * that the structure is not valid or the associated structure is not - * present. - * - * Each NVDIMM device needs two indexes, one for nfit_spa and another for - * nfit_dc which are generated by the slot id of NVDIMM device. - */ -static uint16_t nvdimm_slot_to_spa_index(int slot) -{ - return (slot + 1) << 1; -} - -/* See the comments of nvdimm_slot_to_spa_index(). */ -static uint32_t nvdimm_slot_to_dcr_index(int slot) -{ - return nvdimm_slot_to_spa_index(slot) + 1; -} - -/* ACPI 6.0: 5.2.25.1 System Physical Address Range Structure */ -static void -nvdimm_build_structure_spa(GArray *structures, DeviceState *dev) -{ - NvdimmNfitSpa *nfit_spa; - uint64_t addr = object_property_get_int(OBJECT(dev), PC_DIMM_ADDR_PROP, - NULL); - uint64_t size = object_property_get_int(OBJECT(dev), PC_DIMM_SIZE_PROP, - NULL); - uint32_t node = object_property_get_int(OBJECT(dev), PC_DIMM_NODE_PROP, - NULL); - int slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, - NULL); - - nfit_spa = acpi_data_push(structures, sizeof(*nfit_spa)); - - nfit_spa->type = cpu_to_le16(0 /* System Physical Address Range - Structure */); - nfit_spa->length = cpu_to_le16(sizeof(*nfit_spa)); - nfit_spa->spa_index = cpu_to_le16(nvdimm_slot_to_spa_index(slot)); - - /* - * Control region is strict as all the device info, such as SN, index, - * is associated with slot id. - */ - nfit_spa->flags = cpu_to_le16(1 /* Control region is strictly for - management during hot add/online - operation */ | - 2 /* Data in Proximity Domain field is - valid*/); - - /* NUMA node. */ - nfit_spa->proximity_domain = cpu_to_le32(node); - /* the region reported as PMEM. */ - memcpy(nfit_spa->type_guid, nvdimm_nfit_spa_uuid, - sizeof(nvdimm_nfit_spa_uuid)); - - nfit_spa->spa_base = cpu_to_le64(addr); - nfit_spa->spa_length = cpu_to_le64(size); - - /* It is the PMEM and can be cached as writeback. */ - nfit_spa->mem_attr = cpu_to_le64(0x8ULL /* EFI_MEMORY_WB */ | - 0x8000ULL /* EFI_MEMORY_NV */); -} - -/* - * ACPI 6.0: 5.2.25.2 Memory Device to System Physical Address Range Mapping - * Structure - */ -static void -nvdimm_build_structure_memdev(GArray *structures, DeviceState *dev) -{ - NvdimmNfitMemDev *nfit_memdev; - uint64_t addr = object_property_get_int(OBJECT(dev), PC_DIMM_ADDR_PROP, - NULL); - uint64_t size = object_property_get_int(OBJECT(dev), PC_DIMM_SIZE_PROP, - NULL); - int slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, - NULL); - uint32_t handle = nvdimm_slot_to_handle(slot); - - nfit_memdev = acpi_data_push(structures, sizeof(*nfit_memdev)); - - nfit_memdev->type = cpu_to_le16(1 /* Memory Device to System Address - Range Map Structure*/); - nfit_memdev->length = cpu_to_le16(sizeof(*nfit_memdev)); - nfit_memdev->nfit_handle = cpu_to_le32(handle); - - /* - * associate memory device with System Physical Address Range - * Structure. - */ - nfit_memdev->spa_index = cpu_to_le16(nvdimm_slot_to_spa_index(slot)); - /* associate memory device with Control Region Structure. */ - nfit_memdev->dcr_index = cpu_to_le16(nvdimm_slot_to_dcr_index(slot)); - - /* The memory region on the device. */ - nfit_memdev->region_len = cpu_to_le64(size); - nfit_memdev->region_dpa = cpu_to_le64(addr); - - /* Only one interleave for PMEM. */ - nfit_memdev->interleave_ways = cpu_to_le16(1); -} - -/* - * ACPI 6.0: 5.2.25.5 NVDIMM Control Region Structure. - */ -static void nvdimm_build_structure_dcr(GArray *structures, DeviceState *dev) -{ - NvdimmNfitControlRegion *nfit_dcr; - int slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, - NULL); - uint32_t sn = nvdimm_slot_to_sn(slot); - - nfit_dcr = acpi_data_push(structures, sizeof(*nfit_dcr)); - - nfit_dcr->type = cpu_to_le16(4 /* NVDIMM Control Region Structure */); - nfit_dcr->length = cpu_to_le16(sizeof(*nfit_dcr)); - nfit_dcr->dcr_index = cpu_to_le16(nvdimm_slot_to_dcr_index(slot)); - - /* vendor: Intel. */ - nfit_dcr->vendor_id = cpu_to_le16(0x8086); - nfit_dcr->device_id = cpu_to_le16(1); - - /* The _DSM method is following Intel's DSM specification. */ - nfit_dcr->revision_id = cpu_to_le16(1 /* Current Revision supported - in ACPI 6.0 is 1. */); - nfit_dcr->serial_number = cpu_to_le32(sn); - nfit_dcr->fic = cpu_to_le16(0x201 /* Format Interface Code. See Chapter - 2: NVDIMM Device Specific Method - (DSM) in DSM Spec Rev1.*/); -} - -static GArray *nvdimm_build_device_structure(GSList *device_list) -{ - GArray *structures = g_array_new(false, true /* clear */, 1); - - for (; device_list; device_list = device_list->next) { - DeviceState *dev = device_list->data; - - /* build System Physical Address Range Structure. */ - nvdimm_build_structure_spa(structures, dev); - - /* - * build Memory Device to System Physical Address Range Mapping - * Structure. - */ - nvdimm_build_structure_memdev(structures, dev); - - /* build NVDIMM Control Region Structure. */ - nvdimm_build_structure_dcr(structures, dev); - } - - return structures; -} - -static void nvdimm_build_nfit(GSList *device_list, GArray *table_offsets, - GArray *table_data, GArray *linker) -{ - GArray *structures = nvdimm_build_device_structure(device_list); - unsigned int header; - - acpi_add_table(table_offsets, table_data); - - /* NFIT header. */ - header = table_data->len; - acpi_data_push(table_data, sizeof(NvdimmNfitHeader)); - /* NVDIMM device structures. */ - g_array_append_vals(table_data, structures->data, structures->len); - - build_header(linker, table_data, - (void *)(table_data->data + header), "NFIT", - sizeof(NvdimmNfitHeader) + structures->len, 1, NULL, NULL); - g_array_free(structures, true); -} - -struct NvdimmDsmIn { - uint32_t handle; - uint32_t revision; - uint32_t function; - /* the remaining size in the page is used by arg3. */ - union { - uint8_t arg3[0]; - }; -} QEMU_PACKED; -typedef struct NvdimmDsmIn NvdimmDsmIn; - -struct NvdimmDsmOut { - /* the size of buffer filled by QEMU. */ - uint32_t len; - uint8_t data[0]; -} QEMU_PACKED; -typedef struct NvdimmDsmOut NvdimmDsmOut; - -struct NvdimmDsmFunc0Out { - /* the size of buffer filled by QEMU. */ - uint32_t len; - uint32_t supported_func; -} QEMU_PACKED; -typedef struct NvdimmDsmFunc0Out NvdimmDsmFunc0Out; - -struct NvdimmDsmFuncNoPayloadOut { - /* the size of buffer filled by QEMU. */ - uint32_t len; - uint32_t func_ret_status; -} QEMU_PACKED; -typedef struct NvdimmDsmFuncNoPayloadOut NvdimmDsmFuncNoPayloadOut; - -static uint64_t -nvdimm_dsm_read(void *opaque, hwaddr addr, unsigned size) -{ - nvdimm_debug("BUG: we never read _DSM IO Port.\n"); - return 0; -} - -static void -nvdimm_dsm_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) -{ - NvdimmDsmIn *in; - hwaddr dsm_mem_addr = val; - - nvdimm_debug("dsm memory address %#" HWADDR_PRIx ".\n", dsm_mem_addr); - - /* - * The DSM memory is mapped to guest address space so an evil guest - * can change its content while we are doing DSM emulation. Avoid - * this by copying DSM memory to QEMU local memory. - */ - in = g_malloc(TARGET_PAGE_SIZE); - cpu_physical_memory_read(dsm_mem_addr, in, TARGET_PAGE_SIZE); - - le32_to_cpus(&in->revision); - le32_to_cpus(&in->function); - le32_to_cpus(&in->handle); - - nvdimm_debug("Revision %#x Handler %#x Function %#x.\n", in->revision, - in->handle, in->function); - - /* - * function 0 is called to inquire which functions are supported by - * OSPM - */ - if (in->function == 0) { - NvdimmDsmFunc0Out func0 = { - .len = cpu_to_le32(sizeof(func0)), - /* No function supported other than function 0 */ - .supported_func = cpu_to_le32(0), - }; - cpu_physical_memory_write(dsm_mem_addr, &func0, sizeof func0); - } else { - /* No function except function 0 is supported yet. */ - NvdimmDsmFuncNoPayloadOut out = { - .len = cpu_to_le32(sizeof(out)), - .func_ret_status = cpu_to_le32(1) /* Not Supported */, - }; - cpu_physical_memory_write(dsm_mem_addr, &out, sizeof(out)); - } - - g_free(in); -} - -static const MemoryRegionOps nvdimm_dsm_ops = { - .read = nvdimm_dsm_read, - .write = nvdimm_dsm_write, - .endianness = DEVICE_LITTLE_ENDIAN, - .valid = { - .min_access_size = 4, - .max_access_size = 4, - }, -}; - -void nvdimm_init_acpi_state(AcpiNVDIMMState *state, MemoryRegion *io, - FWCfgState *fw_cfg, Object *owner) -{ - memory_region_init_io(&state->io_mr, owner, &nvdimm_dsm_ops, state, - "nvdimm-acpi-io", NVDIMM_ACPI_IO_LEN); - memory_region_add_subregion(io, NVDIMM_ACPI_IO_BASE, &state->io_mr); - - state->dsm_mem = g_array_new(false, true /* clear */, 1); - acpi_data_push(state->dsm_mem, TARGET_PAGE_SIZE); - fw_cfg_add_file(fw_cfg, NVDIMM_DSM_MEM_FILE, state->dsm_mem->data, - state->dsm_mem->len); -} - -#define NVDIMM_COMMON_DSM "NCAL" -#define NVDIMM_ACPI_MEM_ADDR "MEMA" - -static void nvdimm_build_common_dsm(Aml *dev) -{ - Aml *method, *ifctx, *function, *dsm_mem, *unpatched, *result_size; - uint8_t byte_list[1]; - - method = aml_method(NVDIMM_COMMON_DSM, 4, AML_SERIALIZED); - function = aml_arg(2); - dsm_mem = aml_name(NVDIMM_ACPI_MEM_ADDR); - - /* - * do not support any method if DSM memory address has not been - * patched. - */ - unpatched = aml_if(aml_equal(dsm_mem, aml_int(0x0))); - - /* - * function 0 is called to inquire what functions are supported by - * OSPM - */ - ifctx = aml_if(aml_equal(function, aml_int(0))); - byte_list[0] = 0 /* No function Supported */; - aml_append(ifctx, aml_return(aml_buffer(1, byte_list))); - aml_append(unpatched, ifctx); - - /* No function is supported yet. */ - byte_list[0] = 1 /* Not Supported */; - aml_append(unpatched, aml_return(aml_buffer(1, byte_list))); - aml_append(method, unpatched); - - /* - * The HDLE indicates the DSM function is issued from which device, - * it is not used at this time as no function is supported yet. - * Currently we make it always be 0 for all the devices and will set - * the appropriate value once real function is implemented. - */ - aml_append(method, aml_store(aml_int(0x0), aml_name("HDLE"))); - aml_append(method, aml_store(aml_arg(1), aml_name("REVS"))); - aml_append(method, aml_store(aml_arg(2), aml_name("FUNC"))); - - /* - * tell QEMU about the real address of DSM memory, then QEMU - * gets the control and fills the result in DSM memory. - */ - aml_append(method, aml_store(dsm_mem, aml_name("NTFI"))); - - result_size = aml_local(1); - aml_append(method, aml_store(aml_name("RLEN"), result_size)); - aml_append(method, aml_store(aml_shiftleft(result_size, aml_int(3)), - result_size)); - aml_append(method, aml_create_field(aml_name("ODAT"), aml_int(0), - result_size, "OBUF")); - aml_append(method, aml_concatenate(aml_buffer(0, NULL), aml_name("OBUF"), - aml_arg(6))); - aml_append(method, aml_return(aml_arg(6))); - aml_append(dev, method); -} - -static void nvdimm_build_device_dsm(Aml *dev) -{ - Aml *method; - - method = aml_method("_DSM", 4, AML_NOTSERIALIZED); - aml_append(method, aml_return(aml_call4(NVDIMM_COMMON_DSM, aml_arg(0), - aml_arg(1), aml_arg(2), aml_arg(3)))); - aml_append(dev, method); -} - -static void nvdimm_build_nvdimm_devices(GSList *device_list, Aml *root_dev) -{ - for (; device_list; device_list = device_list->next) { - DeviceState *dev = device_list->data; - int slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, - NULL); - uint32_t handle = nvdimm_slot_to_handle(slot); - Aml *nvdimm_dev; - - nvdimm_dev = aml_device("NV%02X", slot); - - /* - * ACPI 6.0: 9.20 NVDIMM Devices: - * - * _ADR object that is used to supply OSPM with unique address - * of the NVDIMM device. This is done by returning the NFIT Device - * handle that is used to identify the associated entries in ACPI - * table NFIT or _FIT. - */ - aml_append(nvdimm_dev, aml_name_decl("_ADR", aml_int(handle))); - - nvdimm_build_device_dsm(nvdimm_dev); - aml_append(root_dev, nvdimm_dev); - } -} - -static void nvdimm_build_ssdt(GSList *device_list, GArray *table_offsets, - GArray *table_data, GArray *linker) -{ - Aml *ssdt, *sb_scope, *dev, *field; - int mem_addr_offset, nvdimm_ssdt; - - acpi_add_table(table_offsets, table_data); - - ssdt = init_aml_allocator(); - acpi_data_push(ssdt->buf, sizeof(AcpiTableHeader)); - - sb_scope = aml_scope("\\_SB"); - - dev = aml_device("NVDR"); - - /* - * ACPI 6.0: 9.20 NVDIMM Devices: - * - * The ACPI Name Space device uses _HID of ACPI0012 to identify the root - * NVDIMM interface device. Platform firmware is required to contain one - * such device in _SB scope if NVDIMMs support is exposed by platform to - * OSPM. - * For each NVDIMM present or intended to be supported by platform, - * platform firmware also exposes an ACPI Namespace Device under the - * root device. - */ - aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0012"))); - - /* map DSM memory and IO into ACPI namespace. */ - aml_append(dev, aml_operation_region("NPIO", AML_SYSTEM_IO, - aml_int(NVDIMM_ACPI_IO_BASE), NVDIMM_ACPI_IO_LEN)); - aml_append(dev, aml_operation_region("NRAM", AML_SYSTEM_MEMORY, - aml_name(NVDIMM_ACPI_MEM_ADDR), TARGET_PAGE_SIZE)); - - /* - * DSM notifier: - * NTFI: write the address of DSM memory and notify QEMU to emulate - * the access. - * - * It is the IO port so that accessing them will cause VM-exit, the - * control will be transferred to QEMU. - */ - field = aml_field("NPIO", AML_DWORD_ACC, AML_NOLOCK, AML_PRESERVE); - aml_append(field, aml_named_field("NTFI", - sizeof(uint32_t) * BITS_PER_BYTE)); - aml_append(dev, field); - - /* - * DSM input: - * HDLE: store device's handle, it's zero if the _DSM call happens - * on NVDIMM Root Device. - * REVS: store the Arg1 of _DSM call. - * FUNC: store the Arg2 of _DSM call. - * ARG3: store the Arg3 of _DSM call. - * - * They are RAM mapping on host so that these accesses never cause - * VM-EXIT. - */ - field = aml_field("NRAM", AML_DWORD_ACC, AML_NOLOCK, AML_PRESERVE); - aml_append(field, aml_named_field("HDLE", - sizeof(typeof_field(NvdimmDsmIn, handle)) * BITS_PER_BYTE)); - aml_append(field, aml_named_field("REVS", - sizeof(typeof_field(NvdimmDsmIn, revision)) * BITS_PER_BYTE)); - aml_append(field, aml_named_field("FUNC", - sizeof(typeof_field(NvdimmDsmIn, function)) * BITS_PER_BYTE)); - aml_append(field, aml_named_field("ARG3", - (TARGET_PAGE_SIZE - offsetof(NvdimmDsmIn, arg3)) * - BITS_PER_BYTE)); - aml_append(dev, field); - - /* - * DSM output: - * RLEN: the size of the buffer filled by QEMU. - * ODAT: the buffer QEMU uses to store the result. - * - * Since the page is reused by both input and out, the input data - * will be lost after storing new result into ODAT so we should fetch - * all the input data before writing the result. - */ - field = aml_field("NRAM", AML_DWORD_ACC, AML_NOLOCK, AML_PRESERVE); - aml_append(field, aml_named_field("RLEN", - sizeof(typeof_field(NvdimmDsmOut, len)) * BITS_PER_BYTE)); - aml_append(field, aml_named_field("ODAT", - (TARGET_PAGE_SIZE - offsetof(NvdimmDsmOut, data)) * - BITS_PER_BYTE)); - aml_append(dev, field); - - nvdimm_build_common_dsm(dev); - nvdimm_build_device_dsm(dev); - - nvdimm_build_nvdimm_devices(device_list, dev); - - aml_append(sb_scope, dev); - aml_append(ssdt, sb_scope); - - nvdimm_ssdt = table_data->len; - - /* copy AML table into ACPI tables blob and patch header there */ - g_array_append_vals(table_data, ssdt->buf->data, ssdt->buf->len); - mem_addr_offset = build_append_named_dword(table_data, - NVDIMM_ACPI_MEM_ADDR); - - bios_linker_loader_alloc(linker, NVDIMM_DSM_MEM_FILE, TARGET_PAGE_SIZE, - false /* high memory */); - bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, - NVDIMM_DSM_MEM_FILE, table_data, - table_data->data + mem_addr_offset, - sizeof(uint32_t)); - build_header(linker, table_data, - (void *)(table_data->data + nvdimm_ssdt), - "SSDT", table_data->len - nvdimm_ssdt, 1, NULL, "NVDIMM"); - free_aml_allocator(); -} - -void nvdimm_build_acpi(GArray *table_offsets, GArray *table_data, - GArray *linker) -{ - GSList *device_list; - - /* no NVDIMM device is plugged. */ - device_list = nvdimm_get_plugged_device_list(); - if (!device_list) { - return; - } - nvdimm_build_nfit(device_list, table_offsets, table_data, linker); - nvdimm_build_ssdt(device_list, table_offsets, table_data, linker); - g_slist_free(device_list); -} |