1556bdae3SJingyu Wang // SPDX-License-Identifier: MIT 2d38ceaf9SAlex Deucher /* 3d38ceaf9SAlex Deucher * Copyright 2012 Advanced Micro Devices, Inc. 4d38ceaf9SAlex Deucher * 5d38ceaf9SAlex Deucher * Permission is hereby granted, free of charge, to any person obtaining a 6d38ceaf9SAlex Deucher * copy of this software and associated documentation files (the "Software"), 7d38ceaf9SAlex Deucher * to deal in the Software without restriction, including without limitation 8d38ceaf9SAlex Deucher * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9d38ceaf9SAlex Deucher * and/or sell copies of the Software, and to permit persons to whom the 10d38ceaf9SAlex Deucher * Software is furnished to do so, subject to the following conditions: 11d38ceaf9SAlex Deucher * 12d38ceaf9SAlex Deucher * The above copyright notice and this permission notice shall be included in 13d38ceaf9SAlex Deucher * all copies or substantial portions of the Software. 14d38ceaf9SAlex Deucher * 15d38ceaf9SAlex Deucher * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16d38ceaf9SAlex Deucher * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17d38ceaf9SAlex Deucher * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18d38ceaf9SAlex Deucher * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 19d38ceaf9SAlex Deucher * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 20d38ceaf9SAlex Deucher * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 21d38ceaf9SAlex Deucher * OTHER DEALINGS IN THE SOFTWARE. 22d38ceaf9SAlex Deucher * 23d38ceaf9SAlex Deucher */ 24d38ceaf9SAlex Deucher 25d38ceaf9SAlex Deucher #include <linux/pci.h> 26d38ceaf9SAlex Deucher #include <linux/acpi.h> 27a6276e92SThomas Zimmermann #include <linux/backlight.h> 28d38ceaf9SAlex Deucher #include <linux/slab.h> 291cc82301SLijo Lazar #include <linux/xarray.h> 30d38ceaf9SAlex Deucher #include <linux/power_supply.h> 311b0f568dSAlex Deucher #include <linux/pm_runtime.h> 3291b03fc6SPratik Vishwakarma #include <linux/suspend.h> 33d38ceaf9SAlex Deucher #include <acpi/video.h> 344cd078dcSPrike Liang #include <acpi/actbl.h> 35fdf2f6c5SSam Ravnborg 36d38ceaf9SAlex Deucher #include "amdgpu.h" 3798c65108SJean Delvare #include "amdgpu_pm.h" 385df58525SHuang Rui #include "amdgpu_display.h" 3966dc0dddSRex Zhu #include "amd_acpi.h" 40d38ceaf9SAlex Deucher #include "atom.h" 41d38ceaf9SAlex Deucher 424d5275abSLijo Lazar /* Declare GUID for AMD _DSM method for XCCs */ 434d5275abSLijo Lazar static const guid_t amd_xcc_dsm_guid = GUID_INIT(0x8267f5d5, 0xa556, 0x44f2, 444d5275abSLijo Lazar 0xb8, 0xb4, 0x45, 0x56, 0x2e, 454d5275abSLijo Lazar 0x8c, 0x5b, 0xec); 464d5275abSLijo Lazar 474d5275abSLijo Lazar #define AMD_XCC_HID_START 3000 484d5275abSLijo Lazar #define AMD_XCC_DSM_GET_NUM_FUNCS 0 494d5275abSLijo Lazar #define AMD_XCC_DSM_GET_SUPP_MODE 1 504d5275abSLijo Lazar #define AMD_XCC_DSM_GET_XCP_MODE 2 514d5275abSLijo Lazar #define AMD_XCC_DSM_GET_VF_XCC_MAPPING 4 524d5275abSLijo Lazar #define AMD_XCC_DSM_GET_TMR_INFO 5 534d5275abSLijo Lazar #define AMD_XCC_DSM_NUM_FUNCS 5 544d5275abSLijo Lazar 554d5275abSLijo Lazar #define AMD_XCC_MAX_HID 24 564d5275abSLijo Lazar 571cc82301SLijo Lazar struct xarray numa_info_xa; 581cc82301SLijo Lazar 594d5275abSLijo Lazar /* Encapsulates the XCD acpi object information */ 604d5275abSLijo Lazar struct amdgpu_acpi_xcc_info { 614d5275abSLijo Lazar struct list_head list; 621cc82301SLijo Lazar struct amdgpu_numa_info *numa_info; 634d5275abSLijo Lazar uint8_t xcp_node; 644d5275abSLijo Lazar uint8_t phy_id; 654d5275abSLijo Lazar acpi_handle handle; 664d5275abSLijo Lazar }; 674d5275abSLijo Lazar 684d5275abSLijo Lazar struct amdgpu_acpi_dev_info { 694d5275abSLijo Lazar struct list_head list; 704d5275abSLijo Lazar struct list_head xcc_list; 714d5275abSLijo Lazar uint16_t bdf; 724d5275abSLijo Lazar uint16_t supp_xcp_mode; 734d5275abSLijo Lazar uint16_t xcp_mode; 744d5275abSLijo Lazar uint16_t mem_mode; 754d5275abSLijo Lazar uint64_t tmr_base; 764d5275abSLijo Lazar uint64_t tmr_size; 774d5275abSLijo Lazar }; 784d5275abSLijo Lazar 794d5275abSLijo Lazar struct list_head amdgpu_acpi_dev_list; 804d5275abSLijo Lazar 81102c16a0SLyude Paul struct amdgpu_atif_notification_cfg { 82102c16a0SLyude Paul bool enabled; 83102c16a0SLyude Paul int command_code; 84102c16a0SLyude Paul }; 85102c16a0SLyude Paul 86102c16a0SLyude Paul struct amdgpu_atif_notifications { 87102c16a0SLyude Paul bool thermal_state; 88102c16a0SLyude Paul bool forced_power_state; 89102c16a0SLyude Paul bool system_power_state; 90102c16a0SLyude Paul bool brightness_change; 91102c16a0SLyude Paul bool dgpu_display_event; 927349a3afSDavid Francis bool gpu_package_power_limit; 93102c16a0SLyude Paul }; 94102c16a0SLyude Paul 95102c16a0SLyude Paul struct amdgpu_atif_functions { 96102c16a0SLyude Paul bool system_params; 97102c16a0SLyude Paul bool sbios_requests; 98102c16a0SLyude Paul bool temperature_change; 997349a3afSDavid Francis bool query_backlight_transfer_characteristics; 1007349a3afSDavid Francis bool ready_to_undock; 1017349a3afSDavid Francis bool external_gpu_information; 102102c16a0SLyude Paul }; 103102c16a0SLyude Paul 104102c16a0SLyude Paul struct amdgpu_atif { 105280cf1a9SLyude Paul acpi_handle handle; 106280cf1a9SLyude Paul 107102c16a0SLyude Paul struct amdgpu_atif_notifications notifications; 108102c16a0SLyude Paul struct amdgpu_atif_functions functions; 109102c16a0SLyude Paul struct amdgpu_atif_notification_cfg notification_cfg; 11097d798b2SAlex Deucher struct backlight_device *bd; 111206bbafeSDavid Francis struct amdgpu_dm_backlight_caps backlight_caps; 112102c16a0SLyude Paul }; 113102c16a0SLyude Paul 11477bf762fSAlex Deucher struct amdgpu_atcs_functions { 11577bf762fSAlex Deucher bool get_ext_state; 11677bf762fSAlex Deucher bool pcie_perf_req; 11777bf762fSAlex Deucher bool pcie_dev_rdy; 11877bf762fSAlex Deucher bool pcie_bus_width; 11916eb48c6SSathishkumar S bool power_shift_control; 12077bf762fSAlex Deucher }; 12177bf762fSAlex Deucher 12277bf762fSAlex Deucher struct amdgpu_atcs { 12377bf762fSAlex Deucher acpi_handle handle; 12477bf762fSAlex Deucher 12577bf762fSAlex Deucher struct amdgpu_atcs_functions functions; 12677bf762fSAlex Deucher }; 12777bf762fSAlex Deucher 128f9b7f370SAlex Deucher static struct amdgpu_acpi_priv { 129f9b7f370SAlex Deucher struct amdgpu_atif atif; 130f9b7f370SAlex Deucher struct amdgpu_atcs atcs; 131f9b7f370SAlex Deucher } amdgpu_acpi_priv; 132f9b7f370SAlex Deucher 133d38ceaf9SAlex Deucher /* Call the ATIF method 134d38ceaf9SAlex Deucher */ 135d38ceaf9SAlex Deucher /** 136d38ceaf9SAlex Deucher * amdgpu_atif_call - call an ATIF method 137d38ceaf9SAlex Deucher * 13877bf762fSAlex Deucher * @atif: atif structure 139d38ceaf9SAlex Deucher * @function: the ATIF function to execute 140d38ceaf9SAlex Deucher * @params: ATIF function params 141d38ceaf9SAlex Deucher * 142d38ceaf9SAlex Deucher * Executes the requested ATIF function (all asics). 143d38ceaf9SAlex Deucher * Returns a pointer to the acpi output buffer. 144d38ceaf9SAlex Deucher */ 145280cf1a9SLyude Paul static union acpi_object *amdgpu_atif_call(struct amdgpu_atif *atif, 146280cf1a9SLyude Paul int function, 147d38ceaf9SAlex Deucher struct acpi_buffer *params) 148d38ceaf9SAlex Deucher { 149d38ceaf9SAlex Deucher acpi_status status; 150d38ceaf9SAlex Deucher union acpi_object atif_arg_elements[2]; 151d38ceaf9SAlex Deucher struct acpi_object_list atif_arg; 152d38ceaf9SAlex Deucher struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 153d38ceaf9SAlex Deucher 154d38ceaf9SAlex Deucher atif_arg.count = 2; 155d38ceaf9SAlex Deucher atif_arg.pointer = &atif_arg_elements[0]; 156d38ceaf9SAlex Deucher 157d38ceaf9SAlex Deucher atif_arg_elements[0].type = ACPI_TYPE_INTEGER; 158d38ceaf9SAlex Deucher atif_arg_elements[0].integer.value = function; 159d38ceaf9SAlex Deucher 160d38ceaf9SAlex Deucher if (params) { 161d38ceaf9SAlex Deucher atif_arg_elements[1].type = ACPI_TYPE_BUFFER; 162d38ceaf9SAlex Deucher atif_arg_elements[1].buffer.length = params->length; 163d38ceaf9SAlex Deucher atif_arg_elements[1].buffer.pointer = params->pointer; 164d38ceaf9SAlex Deucher } else { 165d38ceaf9SAlex Deucher /* We need a second fake parameter */ 166d38ceaf9SAlex Deucher atif_arg_elements[1].type = ACPI_TYPE_INTEGER; 167d38ceaf9SAlex Deucher atif_arg_elements[1].integer.value = 0; 168d38ceaf9SAlex Deucher } 169d38ceaf9SAlex Deucher 170280cf1a9SLyude Paul status = acpi_evaluate_object(atif->handle, NULL, &atif_arg, 171280cf1a9SLyude Paul &buffer); 172d38ceaf9SAlex Deucher 173d38ceaf9SAlex Deucher /* Fail only if calling the method fails and ATIF is supported */ 174d38ceaf9SAlex Deucher if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { 175d38ceaf9SAlex Deucher DRM_DEBUG_DRIVER("failed to evaluate ATIF got %s\n", 176d38ceaf9SAlex Deucher acpi_format_exception(status)); 177d38ceaf9SAlex Deucher kfree(buffer.pointer); 178d38ceaf9SAlex Deucher return NULL; 179d38ceaf9SAlex Deucher } 180d38ceaf9SAlex Deucher 181d38ceaf9SAlex Deucher return buffer.pointer; 182d38ceaf9SAlex Deucher } 183d38ceaf9SAlex Deucher 184d38ceaf9SAlex Deucher /** 185d38ceaf9SAlex Deucher * amdgpu_atif_parse_notification - parse supported notifications 186d38ceaf9SAlex Deucher * 187d38ceaf9SAlex Deucher * @n: supported notifications struct 188d38ceaf9SAlex Deucher * @mask: supported notifications mask from ATIF 189d38ceaf9SAlex Deucher * 190d38ceaf9SAlex Deucher * Use the supported notifications mask from ATIF function 191d38ceaf9SAlex Deucher * ATIF_FUNCTION_VERIFY_INTERFACE to determine what notifications 192d38ceaf9SAlex Deucher * are supported (all asics). 193d38ceaf9SAlex Deucher */ 194d38ceaf9SAlex Deucher static void amdgpu_atif_parse_notification(struct amdgpu_atif_notifications *n, u32 mask) 195d38ceaf9SAlex Deucher { 196d38ceaf9SAlex Deucher n->thermal_state = mask & ATIF_THERMAL_STATE_CHANGE_REQUEST_SUPPORTED; 197d38ceaf9SAlex Deucher n->forced_power_state = mask & ATIF_FORCED_POWER_STATE_CHANGE_REQUEST_SUPPORTED; 198d38ceaf9SAlex Deucher n->system_power_state = mask & ATIF_SYSTEM_POWER_SOURCE_CHANGE_REQUEST_SUPPORTED; 199d38ceaf9SAlex Deucher n->brightness_change = mask & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST_SUPPORTED; 200d38ceaf9SAlex Deucher n->dgpu_display_event = mask & ATIF_DGPU_DISPLAY_EVENT_SUPPORTED; 2017349a3afSDavid Francis n->gpu_package_power_limit = mask & ATIF_GPU_PACKAGE_POWER_LIMIT_REQUEST_SUPPORTED; 202d38ceaf9SAlex Deucher } 203d38ceaf9SAlex Deucher 204d38ceaf9SAlex Deucher /** 205d38ceaf9SAlex Deucher * amdgpu_atif_parse_functions - parse supported functions 206d38ceaf9SAlex Deucher * 207d38ceaf9SAlex Deucher * @f: supported functions struct 208d38ceaf9SAlex Deucher * @mask: supported functions mask from ATIF 209d38ceaf9SAlex Deucher * 210d38ceaf9SAlex Deucher * Use the supported functions mask from ATIF function 211d38ceaf9SAlex Deucher * ATIF_FUNCTION_VERIFY_INTERFACE to determine what functions 212d38ceaf9SAlex Deucher * are supported (all asics). 213d38ceaf9SAlex Deucher */ 214d38ceaf9SAlex Deucher static void amdgpu_atif_parse_functions(struct amdgpu_atif_functions *f, u32 mask) 215d38ceaf9SAlex Deucher { 216d38ceaf9SAlex Deucher f->system_params = mask & ATIF_GET_SYSTEM_PARAMETERS_SUPPORTED; 217d38ceaf9SAlex Deucher f->sbios_requests = mask & ATIF_GET_SYSTEM_BIOS_REQUESTS_SUPPORTED; 218d38ceaf9SAlex Deucher f->temperature_change = mask & ATIF_TEMPERATURE_CHANGE_NOTIFICATION_SUPPORTED; 2197349a3afSDavid Francis f->query_backlight_transfer_characteristics = 2207349a3afSDavid Francis mask & ATIF_QUERY_BACKLIGHT_TRANSFER_CHARACTERISTICS_SUPPORTED; 2217349a3afSDavid Francis f->ready_to_undock = mask & ATIF_READY_TO_UNDOCK_NOTIFICATION_SUPPORTED; 2227349a3afSDavid Francis f->external_gpu_information = mask & ATIF_GET_EXTERNAL_GPU_INFORMATION_SUPPORTED; 223d38ceaf9SAlex Deucher } 224d38ceaf9SAlex Deucher 225d38ceaf9SAlex Deucher /** 226d38ceaf9SAlex Deucher * amdgpu_atif_verify_interface - verify ATIF 227d38ceaf9SAlex Deucher * 228d38ceaf9SAlex Deucher * @atif: amdgpu atif struct 229d38ceaf9SAlex Deucher * 230d38ceaf9SAlex Deucher * Execute the ATIF_FUNCTION_VERIFY_INTERFACE ATIF function 231d38ceaf9SAlex Deucher * to initialize ATIF and determine what features are supported 232d38ceaf9SAlex Deucher * (all asics). 233d38ceaf9SAlex Deucher * returns 0 on success, error on failure. 234d38ceaf9SAlex Deucher */ 235280cf1a9SLyude Paul static int amdgpu_atif_verify_interface(struct amdgpu_atif *atif) 236d38ceaf9SAlex Deucher { 237d38ceaf9SAlex Deucher union acpi_object *info; 238d38ceaf9SAlex Deucher struct atif_verify_interface output; 239d38ceaf9SAlex Deucher size_t size; 240d38ceaf9SAlex Deucher int err = 0; 241d38ceaf9SAlex Deucher 242280cf1a9SLyude Paul info = amdgpu_atif_call(atif, ATIF_FUNCTION_VERIFY_INTERFACE, NULL); 243d38ceaf9SAlex Deucher if (!info) 244d38ceaf9SAlex Deucher return -EIO; 245d38ceaf9SAlex Deucher 246d38ceaf9SAlex Deucher memset(&output, 0, sizeof(output)); 247d38ceaf9SAlex Deucher 248d38ceaf9SAlex Deucher size = *(u16 *) info->buffer.pointer; 249d38ceaf9SAlex Deucher if (size < 12) { 250d38ceaf9SAlex Deucher DRM_INFO("ATIF buffer is too small: %zu\n", size); 251d38ceaf9SAlex Deucher err = -EINVAL; 252d38ceaf9SAlex Deucher goto out; 253d38ceaf9SAlex Deucher } 254d38ceaf9SAlex Deucher size = min(sizeof(output), size); 255d38ceaf9SAlex Deucher 256d38ceaf9SAlex Deucher memcpy(&output, info->buffer.pointer, size); 257d38ceaf9SAlex Deucher 258d38ceaf9SAlex Deucher /* TODO: check version? */ 259d38ceaf9SAlex Deucher DRM_DEBUG_DRIVER("ATIF version %u\n", output.version); 260d38ceaf9SAlex Deucher 261d38ceaf9SAlex Deucher amdgpu_atif_parse_notification(&atif->notifications, output.notification_mask); 262d38ceaf9SAlex Deucher amdgpu_atif_parse_functions(&atif->functions, output.function_bits); 263d38ceaf9SAlex Deucher 264d38ceaf9SAlex Deucher out: 265d38ceaf9SAlex Deucher kfree(info); 266d38ceaf9SAlex Deucher return err; 267d38ceaf9SAlex Deucher } 268d38ceaf9SAlex Deucher 269d38ceaf9SAlex Deucher /** 270d38ceaf9SAlex Deucher * amdgpu_atif_get_notification_params - determine notify configuration 271d38ceaf9SAlex Deucher * 2721fdbbc12SFabio M. De Francesco * @atif: acpi handle 273d38ceaf9SAlex Deucher * 274d38ceaf9SAlex Deucher * Execute the ATIF_FUNCTION_GET_SYSTEM_PARAMETERS ATIF function 275d38ceaf9SAlex Deucher * to determine if a notifier is used and if so which one 276d38ceaf9SAlex Deucher * (all asics). This is either Notify(VGA, 0x81) or Notify(VGA, n) 277d38ceaf9SAlex Deucher * where n is specified in the result if a notifier is used. 278d38ceaf9SAlex Deucher * Returns 0 on success, error on failure. 279d38ceaf9SAlex Deucher */ 280280cf1a9SLyude Paul static int amdgpu_atif_get_notification_params(struct amdgpu_atif *atif) 281d38ceaf9SAlex Deucher { 282d38ceaf9SAlex Deucher union acpi_object *info; 283280cf1a9SLyude Paul struct amdgpu_atif_notification_cfg *n = &atif->notification_cfg; 284d38ceaf9SAlex Deucher struct atif_system_params params; 285d38ceaf9SAlex Deucher size_t size; 286d38ceaf9SAlex Deucher int err = 0; 287d38ceaf9SAlex Deucher 288280cf1a9SLyude Paul info = amdgpu_atif_call(atif, ATIF_FUNCTION_GET_SYSTEM_PARAMETERS, 289280cf1a9SLyude Paul NULL); 290d38ceaf9SAlex Deucher if (!info) { 291d38ceaf9SAlex Deucher err = -EIO; 292d38ceaf9SAlex Deucher goto out; 293d38ceaf9SAlex Deucher } 294d38ceaf9SAlex Deucher 295d38ceaf9SAlex Deucher size = *(u16 *) info->buffer.pointer; 296d38ceaf9SAlex Deucher if (size < 10) { 297d38ceaf9SAlex Deucher err = -EINVAL; 298d38ceaf9SAlex Deucher goto out; 299d38ceaf9SAlex Deucher } 300d38ceaf9SAlex Deucher 301d38ceaf9SAlex Deucher memset(¶ms, 0, sizeof(params)); 302d38ceaf9SAlex Deucher size = min(sizeof(params), size); 303d38ceaf9SAlex Deucher memcpy(¶ms, info->buffer.pointer, size); 304d38ceaf9SAlex Deucher 305d38ceaf9SAlex Deucher DRM_DEBUG_DRIVER("SYSTEM_PARAMS: mask = %#x, flags = %#x\n", 306d38ceaf9SAlex Deucher params.flags, params.valid_mask); 307d38ceaf9SAlex Deucher params.flags = params.flags & params.valid_mask; 308d38ceaf9SAlex Deucher 309d38ceaf9SAlex Deucher if ((params.flags & ATIF_NOTIFY_MASK) == ATIF_NOTIFY_NONE) { 310d38ceaf9SAlex Deucher n->enabled = false; 311d38ceaf9SAlex Deucher n->command_code = 0; 312d38ceaf9SAlex Deucher } else if ((params.flags & ATIF_NOTIFY_MASK) == ATIF_NOTIFY_81) { 313d38ceaf9SAlex Deucher n->enabled = true; 314d38ceaf9SAlex Deucher n->command_code = 0x81; 315d38ceaf9SAlex Deucher } else { 316d38ceaf9SAlex Deucher if (size < 11) { 317d38ceaf9SAlex Deucher err = -EINVAL; 318d38ceaf9SAlex Deucher goto out; 319d38ceaf9SAlex Deucher } 320d38ceaf9SAlex Deucher n->enabled = true; 321d38ceaf9SAlex Deucher n->command_code = params.command_code; 322d38ceaf9SAlex Deucher } 323d38ceaf9SAlex Deucher 324d38ceaf9SAlex Deucher out: 325d38ceaf9SAlex Deucher DRM_DEBUG_DRIVER("Notification %s, command code = %#x\n", 326d38ceaf9SAlex Deucher (n->enabled ? "enabled" : "disabled"), 327d38ceaf9SAlex Deucher n->command_code); 328d38ceaf9SAlex Deucher kfree(info); 329d38ceaf9SAlex Deucher return err; 330d38ceaf9SAlex Deucher } 331d38ceaf9SAlex Deucher 332d38ceaf9SAlex Deucher /** 333206bbafeSDavid Francis * amdgpu_atif_query_backlight_caps - get min and max backlight input signal 334206bbafeSDavid Francis * 3351fdbbc12SFabio M. De Francesco * @atif: acpi handle 336206bbafeSDavid Francis * 337206bbafeSDavid Francis * Execute the QUERY_BRIGHTNESS_TRANSFER_CHARACTERISTICS ATIF function 338206bbafeSDavid Francis * to determine the acceptable range of backlight values 339206bbafeSDavid Francis * 340206bbafeSDavid Francis * Backlight_caps.caps_valid will be set to true if the query is successful 341206bbafeSDavid Francis * 342206bbafeSDavid Francis * The input signals are in range 0-255 343206bbafeSDavid Francis * 344206bbafeSDavid Francis * This function assumes the display with backlight is the first LCD 345206bbafeSDavid Francis * 346206bbafeSDavid Francis * Returns 0 on success, error on failure. 347206bbafeSDavid Francis */ 348206bbafeSDavid Francis static int amdgpu_atif_query_backlight_caps(struct amdgpu_atif *atif) 349206bbafeSDavid Francis { 350206bbafeSDavid Francis union acpi_object *info; 351206bbafeSDavid Francis struct atif_qbtc_output characteristics; 352206bbafeSDavid Francis struct atif_qbtc_arguments arguments; 353206bbafeSDavid Francis struct acpi_buffer params; 354206bbafeSDavid Francis size_t size; 355206bbafeSDavid Francis int err = 0; 356206bbafeSDavid Francis 357206bbafeSDavid Francis arguments.size = sizeof(arguments); 358206bbafeSDavid Francis arguments.requested_display = ATIF_QBTC_REQUEST_LCD1; 359206bbafeSDavid Francis 360206bbafeSDavid Francis params.length = sizeof(arguments); 361206bbafeSDavid Francis params.pointer = (void *)&arguments; 362206bbafeSDavid Francis 363206bbafeSDavid Francis info = amdgpu_atif_call(atif, 364206bbafeSDavid Francis ATIF_FUNCTION_QUERY_BRIGHTNESS_TRANSFER_CHARACTERISTICS, 365206bbafeSDavid Francis ¶ms); 366206bbafeSDavid Francis if (!info) { 367206bbafeSDavid Francis err = -EIO; 368206bbafeSDavid Francis goto out; 369206bbafeSDavid Francis } 370206bbafeSDavid Francis 371206bbafeSDavid Francis size = *(u16 *) info->buffer.pointer; 372206bbafeSDavid Francis if (size < 10) { 373206bbafeSDavid Francis err = -EINVAL; 374206bbafeSDavid Francis goto out; 375206bbafeSDavid Francis } 376206bbafeSDavid Francis 377206bbafeSDavid Francis memset(&characteristics, 0, sizeof(characteristics)); 378206bbafeSDavid Francis size = min(sizeof(characteristics), size); 379206bbafeSDavid Francis memcpy(&characteristics, info->buffer.pointer, size); 380206bbafeSDavid Francis 381206bbafeSDavid Francis atif->backlight_caps.caps_valid = true; 382206bbafeSDavid Francis atif->backlight_caps.min_input_signal = 383206bbafeSDavid Francis characteristics.min_input_signal; 384206bbafeSDavid Francis atif->backlight_caps.max_input_signal = 385206bbafeSDavid Francis characteristics.max_input_signal; 386206bbafeSDavid Francis out: 387206bbafeSDavid Francis kfree(info); 388206bbafeSDavid Francis return err; 389206bbafeSDavid Francis } 390206bbafeSDavid Francis 391206bbafeSDavid Francis /** 392d38ceaf9SAlex Deucher * amdgpu_atif_get_sbios_requests - get requested sbios event 393d38ceaf9SAlex Deucher * 3941fdbbc12SFabio M. De Francesco * @atif: acpi handle 395d38ceaf9SAlex Deucher * @req: atif sbios request struct 396d38ceaf9SAlex Deucher * 397d38ceaf9SAlex Deucher * Execute the ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS ATIF function 398d38ceaf9SAlex Deucher * to determine what requests the sbios is making to the driver 399d38ceaf9SAlex Deucher * (all asics). 400d38ceaf9SAlex Deucher * Returns 0 on success, error on failure. 401d38ceaf9SAlex Deucher */ 402280cf1a9SLyude Paul static int amdgpu_atif_get_sbios_requests(struct amdgpu_atif *atif, 403d38ceaf9SAlex Deucher struct atif_sbios_requests *req) 404d38ceaf9SAlex Deucher { 405d38ceaf9SAlex Deucher union acpi_object *info; 406d38ceaf9SAlex Deucher size_t size; 407d38ceaf9SAlex Deucher int count = 0; 408d38ceaf9SAlex Deucher 409280cf1a9SLyude Paul info = amdgpu_atif_call(atif, ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS, 410280cf1a9SLyude Paul NULL); 411d38ceaf9SAlex Deucher if (!info) 412d38ceaf9SAlex Deucher return -EIO; 413d38ceaf9SAlex Deucher 414d38ceaf9SAlex Deucher size = *(u16 *)info->buffer.pointer; 415d38ceaf9SAlex Deucher if (size < 0xd) { 416d38ceaf9SAlex Deucher count = -EINVAL; 417d38ceaf9SAlex Deucher goto out; 418d38ceaf9SAlex Deucher } 419d38ceaf9SAlex Deucher memset(req, 0, sizeof(*req)); 420d38ceaf9SAlex Deucher 421d38ceaf9SAlex Deucher size = min(sizeof(*req), size); 422d38ceaf9SAlex Deucher memcpy(req, info->buffer.pointer, size); 423d38ceaf9SAlex Deucher DRM_DEBUG_DRIVER("SBIOS pending requests: %#x\n", req->pending); 424d38ceaf9SAlex Deucher 425d38ceaf9SAlex Deucher count = hweight32(req->pending); 426d38ceaf9SAlex Deucher 427d38ceaf9SAlex Deucher out: 428d38ceaf9SAlex Deucher kfree(info); 429d38ceaf9SAlex Deucher return count; 430d38ceaf9SAlex Deucher } 431d38ceaf9SAlex Deucher 432d38ceaf9SAlex Deucher /** 433d38ceaf9SAlex Deucher * amdgpu_atif_handler - handle ATIF notify requests 434d38ceaf9SAlex Deucher * 435d38ceaf9SAlex Deucher * @adev: amdgpu_device pointer 436d38ceaf9SAlex Deucher * @event: atif sbios request struct 437d38ceaf9SAlex Deucher * 438d38ceaf9SAlex Deucher * Checks the acpi event and if it matches an atif event, 439d38ceaf9SAlex Deucher * handles it. 440582f58deSLyude Paul * 441582f58deSLyude Paul * Returns: 442582f58deSLyude Paul * NOTIFY_BAD or NOTIFY_DONE, depending on the event. 443d38ceaf9SAlex Deucher */ 444b7cecbe8SJean Delvare static int amdgpu_atif_handler(struct amdgpu_device *adev, 445d38ceaf9SAlex Deucher struct acpi_bus_event *event) 446d38ceaf9SAlex Deucher { 447f9b7f370SAlex Deucher struct amdgpu_atif *atif = &amdgpu_acpi_priv.atif; 448d38ceaf9SAlex Deucher int count; 449d38ceaf9SAlex Deucher 450d38ceaf9SAlex Deucher DRM_DEBUG_DRIVER("event, device_class = %s, type = %#x\n", 451d38ceaf9SAlex Deucher event->device_class, event->type); 452d38ceaf9SAlex Deucher 453d38ceaf9SAlex Deucher if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) 454d38ceaf9SAlex Deucher return NOTIFY_DONE; 455d38ceaf9SAlex Deucher 456582f58deSLyude Paul /* Is this actually our event? */ 457f9b7f370SAlex Deucher if (!atif->notification_cfg.enabled || 458582f58deSLyude Paul event->type != atif->notification_cfg.command_code) { 459582f58deSLyude Paul /* These events will generate keypresses otherwise */ 460582f58deSLyude Paul if (event->type == ACPI_VIDEO_NOTIFY_PROBE) 461582f58deSLyude Paul return NOTIFY_BAD; 462582f58deSLyude Paul else 463d38ceaf9SAlex Deucher return NOTIFY_DONE; 464582f58deSLyude Paul } 465d38ceaf9SAlex Deucher 4669e7204beSAlex Deucher if (atif->functions.sbios_requests) { 4679e7204beSAlex Deucher struct atif_sbios_requests req; 4689e7204beSAlex Deucher 469d38ceaf9SAlex Deucher /* Check pending SBIOS requests */ 470280cf1a9SLyude Paul count = amdgpu_atif_get_sbios_requests(atif, &req); 471d38ceaf9SAlex Deucher 472d38ceaf9SAlex Deucher if (count <= 0) 473582f58deSLyude Paul return NOTIFY_BAD; 474d38ceaf9SAlex Deucher 475d38ceaf9SAlex Deucher DRM_DEBUG_DRIVER("ATIF: %d pending SBIOS requests\n", count); 476d38ceaf9SAlex Deucher 47797d798b2SAlex Deucher if (req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) { 47897d798b2SAlex Deucher if (atif->bd) { 479d38ceaf9SAlex Deucher DRM_DEBUG_DRIVER("Changing brightness to %d\n", 480d38ceaf9SAlex Deucher req.backlight_level); 481bcb7b0efSAndriy Gapon /* 482bcb7b0efSAndriy Gapon * XXX backlight_device_set_brightness() is 483bcb7b0efSAndriy Gapon * hardwired to post BACKLIGHT_UPDATE_SYSFS. 484bcb7b0efSAndriy Gapon * It probably should accept 'reason' parameter. 485bcb7b0efSAndriy Gapon */ 48697d798b2SAlex Deucher backlight_device_set_brightness(atif->bd, req.backlight_level); 487bcb7b0efSAndriy Gapon } 48897d798b2SAlex Deucher } 48997d798b2SAlex Deucher 4901b0f568dSAlex Deucher if (req.pending & ATIF_DGPU_DISPLAY_EVENT) { 491bdb1ccb0SAaron Liu if (adev->flags & AMD_IS_PX) { 4924a580877SLuben Tuikov pm_runtime_get_sync(adev_to_drm(adev)->dev); 4931b0f568dSAlex Deucher /* Just fire off a uevent and let userspace tell us what to do */ 4944a580877SLuben Tuikov drm_helper_hpd_irq_event(adev_to_drm(adev)); 4954a580877SLuben Tuikov pm_runtime_mark_last_busy(adev_to_drm(adev)->dev); 4964a580877SLuben Tuikov pm_runtime_put_autosuspend(adev_to_drm(adev)->dev); 4971b0f568dSAlex Deucher } 4981b0f568dSAlex Deucher } 499d38ceaf9SAlex Deucher /* TODO: check other events */ 5009e7204beSAlex Deucher } 501d38ceaf9SAlex Deucher 502d38ceaf9SAlex Deucher /* We've handled the event, stop the notifier chain. The ACPI interface 503d38ceaf9SAlex Deucher * overloads ACPI_VIDEO_NOTIFY_PROBE, we don't want to send that to 504d38ceaf9SAlex Deucher * userspace if the event was generated only to signal a SBIOS 505d38ceaf9SAlex Deucher * request. 506d38ceaf9SAlex Deucher */ 507d38ceaf9SAlex Deucher return NOTIFY_BAD; 508d38ceaf9SAlex Deucher } 509d38ceaf9SAlex Deucher 510d38ceaf9SAlex Deucher /* Call the ATCS method 511d38ceaf9SAlex Deucher */ 512d38ceaf9SAlex Deucher /** 513d38ceaf9SAlex Deucher * amdgpu_atcs_call - call an ATCS method 514d38ceaf9SAlex Deucher * 51577bf762fSAlex Deucher * @atcs: atcs structure 516d38ceaf9SAlex Deucher * @function: the ATCS function to execute 517d38ceaf9SAlex Deucher * @params: ATCS function params 518d38ceaf9SAlex Deucher * 519d38ceaf9SAlex Deucher * Executes the requested ATCS function (all asics). 520d38ceaf9SAlex Deucher * Returns a pointer to the acpi output buffer. 521d38ceaf9SAlex Deucher */ 52277bf762fSAlex Deucher static union acpi_object *amdgpu_atcs_call(struct amdgpu_atcs *atcs, 52377bf762fSAlex Deucher int function, 524d38ceaf9SAlex Deucher struct acpi_buffer *params) 525d38ceaf9SAlex Deucher { 526d38ceaf9SAlex Deucher acpi_status status; 527d38ceaf9SAlex Deucher union acpi_object atcs_arg_elements[2]; 528d38ceaf9SAlex Deucher struct acpi_object_list atcs_arg; 529d38ceaf9SAlex Deucher struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 530d38ceaf9SAlex Deucher 531d38ceaf9SAlex Deucher atcs_arg.count = 2; 532d38ceaf9SAlex Deucher atcs_arg.pointer = &atcs_arg_elements[0]; 533d38ceaf9SAlex Deucher 534d38ceaf9SAlex Deucher atcs_arg_elements[0].type = ACPI_TYPE_INTEGER; 535d38ceaf9SAlex Deucher atcs_arg_elements[0].integer.value = function; 536d38ceaf9SAlex Deucher 537d38ceaf9SAlex Deucher if (params) { 538d38ceaf9SAlex Deucher atcs_arg_elements[1].type = ACPI_TYPE_BUFFER; 539d38ceaf9SAlex Deucher atcs_arg_elements[1].buffer.length = params->length; 540d38ceaf9SAlex Deucher atcs_arg_elements[1].buffer.pointer = params->pointer; 541d38ceaf9SAlex Deucher } else { 542d38ceaf9SAlex Deucher /* We need a second fake parameter */ 543d38ceaf9SAlex Deucher atcs_arg_elements[1].type = ACPI_TYPE_INTEGER; 544d38ceaf9SAlex Deucher atcs_arg_elements[1].integer.value = 0; 545d38ceaf9SAlex Deucher } 546d38ceaf9SAlex Deucher 5474965257fSAlex Deucher status = acpi_evaluate_object(atcs->handle, NULL, &atcs_arg, &buffer); 548d38ceaf9SAlex Deucher 549d38ceaf9SAlex Deucher /* Fail only if calling the method fails and ATIF is supported */ 550d38ceaf9SAlex Deucher if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { 551d38ceaf9SAlex Deucher DRM_DEBUG_DRIVER("failed to evaluate ATCS got %s\n", 552d38ceaf9SAlex Deucher acpi_format_exception(status)); 553d38ceaf9SAlex Deucher kfree(buffer.pointer); 554d38ceaf9SAlex Deucher return NULL; 555d38ceaf9SAlex Deucher } 556d38ceaf9SAlex Deucher 557d38ceaf9SAlex Deucher return buffer.pointer; 558d38ceaf9SAlex Deucher } 559d38ceaf9SAlex Deucher 560d38ceaf9SAlex Deucher /** 561d38ceaf9SAlex Deucher * amdgpu_atcs_parse_functions - parse supported functions 562d38ceaf9SAlex Deucher * 563d38ceaf9SAlex Deucher * @f: supported functions struct 564d38ceaf9SAlex Deucher * @mask: supported functions mask from ATCS 565d38ceaf9SAlex Deucher * 566d38ceaf9SAlex Deucher * Use the supported functions mask from ATCS function 567d38ceaf9SAlex Deucher * ATCS_FUNCTION_VERIFY_INTERFACE to determine what functions 568d38ceaf9SAlex Deucher * are supported (all asics). 569d38ceaf9SAlex Deucher */ 570d38ceaf9SAlex Deucher static void amdgpu_atcs_parse_functions(struct amdgpu_atcs_functions *f, u32 mask) 571d38ceaf9SAlex Deucher { 572d38ceaf9SAlex Deucher f->get_ext_state = mask & ATCS_GET_EXTERNAL_STATE_SUPPORTED; 573d38ceaf9SAlex Deucher f->pcie_perf_req = mask & ATCS_PCIE_PERFORMANCE_REQUEST_SUPPORTED; 574d38ceaf9SAlex Deucher f->pcie_dev_rdy = mask & ATCS_PCIE_DEVICE_READY_NOTIFICATION_SUPPORTED; 575d38ceaf9SAlex Deucher f->pcie_bus_width = mask & ATCS_SET_PCIE_BUS_WIDTH_SUPPORTED; 57616eb48c6SSathishkumar S f->power_shift_control = mask & ATCS_SET_POWER_SHIFT_CONTROL_SUPPORTED; 577d38ceaf9SAlex Deucher } 578d38ceaf9SAlex Deucher 579d38ceaf9SAlex Deucher /** 580d38ceaf9SAlex Deucher * amdgpu_atcs_verify_interface - verify ATCS 581d38ceaf9SAlex Deucher * 582d38ceaf9SAlex Deucher * @atcs: amdgpu atcs struct 583d38ceaf9SAlex Deucher * 584d38ceaf9SAlex Deucher * Execute the ATCS_FUNCTION_VERIFY_INTERFACE ATCS function 585d38ceaf9SAlex Deucher * to initialize ATCS and determine what features are supported 586d38ceaf9SAlex Deucher * (all asics). 587d38ceaf9SAlex Deucher * returns 0 on success, error on failure. 588d38ceaf9SAlex Deucher */ 58977bf762fSAlex Deucher static int amdgpu_atcs_verify_interface(struct amdgpu_atcs *atcs) 590d38ceaf9SAlex Deucher { 591d38ceaf9SAlex Deucher union acpi_object *info; 592d38ceaf9SAlex Deucher struct atcs_verify_interface output; 593d38ceaf9SAlex Deucher size_t size; 594d38ceaf9SAlex Deucher int err = 0; 595d38ceaf9SAlex Deucher 59677bf762fSAlex Deucher info = amdgpu_atcs_call(atcs, ATCS_FUNCTION_VERIFY_INTERFACE, NULL); 597d38ceaf9SAlex Deucher if (!info) 598d38ceaf9SAlex Deucher return -EIO; 599d38ceaf9SAlex Deucher 600d38ceaf9SAlex Deucher memset(&output, 0, sizeof(output)); 601d38ceaf9SAlex Deucher 602d38ceaf9SAlex Deucher size = *(u16 *) info->buffer.pointer; 603d38ceaf9SAlex Deucher if (size < 8) { 604d38ceaf9SAlex Deucher DRM_INFO("ATCS buffer is too small: %zu\n", size); 605d38ceaf9SAlex Deucher err = -EINVAL; 606d38ceaf9SAlex Deucher goto out; 607d38ceaf9SAlex Deucher } 608d38ceaf9SAlex Deucher size = min(sizeof(output), size); 609d38ceaf9SAlex Deucher 610d38ceaf9SAlex Deucher memcpy(&output, info->buffer.pointer, size); 611d38ceaf9SAlex Deucher 612d38ceaf9SAlex Deucher /* TODO: check version? */ 613d38ceaf9SAlex Deucher DRM_DEBUG_DRIVER("ATCS version %u\n", output.version); 614d38ceaf9SAlex Deucher 615d38ceaf9SAlex Deucher amdgpu_atcs_parse_functions(&atcs->functions, output.function_bits); 616d38ceaf9SAlex Deucher 617d38ceaf9SAlex Deucher out: 618d38ceaf9SAlex Deucher kfree(info); 619d38ceaf9SAlex Deucher return err; 620d38ceaf9SAlex Deucher } 621d38ceaf9SAlex Deucher 622d38ceaf9SAlex Deucher /** 623d38ceaf9SAlex Deucher * amdgpu_acpi_is_pcie_performance_request_supported 624d38ceaf9SAlex Deucher * 625d38ceaf9SAlex Deucher * @adev: amdgpu_device pointer 626d38ceaf9SAlex Deucher * 627d38ceaf9SAlex Deucher * Check if the ATCS pcie_perf_req and pcie_dev_rdy methods 628d38ceaf9SAlex Deucher * are supported (all asics). 629d38ceaf9SAlex Deucher * returns true if supported, false if not. 630d38ceaf9SAlex Deucher */ 631d38ceaf9SAlex Deucher bool amdgpu_acpi_is_pcie_performance_request_supported(struct amdgpu_device *adev) 632d38ceaf9SAlex Deucher { 633f9b7f370SAlex Deucher struct amdgpu_atcs *atcs = &amdgpu_acpi_priv.atcs; 634d38ceaf9SAlex Deucher 635d38ceaf9SAlex Deucher if (atcs->functions.pcie_perf_req && atcs->functions.pcie_dev_rdy) 636d38ceaf9SAlex Deucher return true; 637d38ceaf9SAlex Deucher 638d38ceaf9SAlex Deucher return false; 639d38ceaf9SAlex Deucher } 640d38ceaf9SAlex Deucher 641d38ceaf9SAlex Deucher /** 64216eb48c6SSathishkumar S * amdgpu_acpi_is_power_shift_control_supported 64316eb48c6SSathishkumar S * 64416eb48c6SSathishkumar S * Check if the ATCS power shift control method 64516eb48c6SSathishkumar S * is supported. 64616eb48c6SSathishkumar S * returns true if supported, false if not. 64716eb48c6SSathishkumar S */ 64816eb48c6SSathishkumar S bool amdgpu_acpi_is_power_shift_control_supported(void) 64916eb48c6SSathishkumar S { 65016eb48c6SSathishkumar S return amdgpu_acpi_priv.atcs.functions.power_shift_control; 65116eb48c6SSathishkumar S } 65216eb48c6SSathishkumar S 65316eb48c6SSathishkumar S /** 654d38ceaf9SAlex Deucher * amdgpu_acpi_pcie_notify_device_ready 655d38ceaf9SAlex Deucher * 656d38ceaf9SAlex Deucher * @adev: amdgpu_device pointer 657d38ceaf9SAlex Deucher * 658d38ceaf9SAlex Deucher * Executes the PCIE_DEVICE_READY_NOTIFICATION method 659d38ceaf9SAlex Deucher * (all asics). 660d38ceaf9SAlex Deucher * returns 0 on success, error on failure. 661d38ceaf9SAlex Deucher */ 662d38ceaf9SAlex Deucher int amdgpu_acpi_pcie_notify_device_ready(struct amdgpu_device *adev) 663d38ceaf9SAlex Deucher { 664d38ceaf9SAlex Deucher union acpi_object *info; 665f9b7f370SAlex Deucher struct amdgpu_atcs *atcs = &amdgpu_acpi_priv.atcs; 666d38ceaf9SAlex Deucher 667d38ceaf9SAlex Deucher if (!atcs->functions.pcie_dev_rdy) 668d38ceaf9SAlex Deucher return -EINVAL; 669d38ceaf9SAlex Deucher 67077bf762fSAlex Deucher info = amdgpu_atcs_call(atcs, ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION, NULL); 671d38ceaf9SAlex Deucher if (!info) 672d38ceaf9SAlex Deucher return -EIO; 673d38ceaf9SAlex Deucher 674d38ceaf9SAlex Deucher kfree(info); 675d38ceaf9SAlex Deucher 676d38ceaf9SAlex Deucher return 0; 677d38ceaf9SAlex Deucher } 678d38ceaf9SAlex Deucher 679d38ceaf9SAlex Deucher /** 680d38ceaf9SAlex Deucher * amdgpu_acpi_pcie_performance_request 681d38ceaf9SAlex Deucher * 682d38ceaf9SAlex Deucher * @adev: amdgpu_device pointer 683d38ceaf9SAlex Deucher * @perf_req: requested perf level (pcie gen speed) 684d38ceaf9SAlex Deucher * @advertise: set advertise caps flag if set 685d38ceaf9SAlex Deucher * 686d38ceaf9SAlex Deucher * Executes the PCIE_PERFORMANCE_REQUEST method to 687d38ceaf9SAlex Deucher * change the pcie gen speed (all asics). 688d38ceaf9SAlex Deucher * returns 0 on success, error on failure. 689d38ceaf9SAlex Deucher */ 690d38ceaf9SAlex Deucher int amdgpu_acpi_pcie_performance_request(struct amdgpu_device *adev, 691d38ceaf9SAlex Deucher u8 perf_req, bool advertise) 692d38ceaf9SAlex Deucher { 693d38ceaf9SAlex Deucher union acpi_object *info; 694f9b7f370SAlex Deucher struct amdgpu_atcs *atcs = &amdgpu_acpi_priv.atcs; 695d38ceaf9SAlex Deucher struct atcs_pref_req_input atcs_input; 696d38ceaf9SAlex Deucher struct atcs_pref_req_output atcs_output; 697d38ceaf9SAlex Deucher struct acpi_buffer params; 698d38ceaf9SAlex Deucher size_t size; 699d38ceaf9SAlex Deucher u32 retry = 3; 700d38ceaf9SAlex Deucher 70177bf762fSAlex Deucher if (amdgpu_acpi_pcie_notify_device_ready(adev)) 702d38ceaf9SAlex Deucher return -EINVAL; 703d38ceaf9SAlex Deucher 704d38ceaf9SAlex Deucher if (!atcs->functions.pcie_perf_req) 705d38ceaf9SAlex Deucher return -EINVAL; 706d38ceaf9SAlex Deucher 707d38ceaf9SAlex Deucher atcs_input.size = sizeof(struct atcs_pref_req_input); 708d38ceaf9SAlex Deucher /* client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) */ 709d38ceaf9SAlex Deucher atcs_input.client_id = adev->pdev->devfn | (adev->pdev->bus->number << 8); 710d38ceaf9SAlex Deucher atcs_input.valid_flags_mask = ATCS_VALID_FLAGS_MASK; 711d38ceaf9SAlex Deucher atcs_input.flags = ATCS_WAIT_FOR_COMPLETION; 712d38ceaf9SAlex Deucher if (advertise) 713d38ceaf9SAlex Deucher atcs_input.flags |= ATCS_ADVERTISE_CAPS; 714d38ceaf9SAlex Deucher atcs_input.req_type = ATCS_PCIE_LINK_SPEED; 715d38ceaf9SAlex Deucher atcs_input.perf_req = perf_req; 716d38ceaf9SAlex Deucher 717d38ceaf9SAlex Deucher params.length = sizeof(struct atcs_pref_req_input); 718d38ceaf9SAlex Deucher params.pointer = &atcs_input; 719d38ceaf9SAlex Deucher 720d38ceaf9SAlex Deucher while (retry--) { 72177bf762fSAlex Deucher info = amdgpu_atcs_call(atcs, ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST, ¶ms); 722d38ceaf9SAlex Deucher if (!info) 723d38ceaf9SAlex Deucher return -EIO; 724d38ceaf9SAlex Deucher 725d38ceaf9SAlex Deucher memset(&atcs_output, 0, sizeof(atcs_output)); 726d38ceaf9SAlex Deucher 727d38ceaf9SAlex Deucher size = *(u16 *) info->buffer.pointer; 728d38ceaf9SAlex Deucher if (size < 3) { 729d38ceaf9SAlex Deucher DRM_INFO("ATCS buffer is too small: %zu\n", size); 730d38ceaf9SAlex Deucher kfree(info); 731d38ceaf9SAlex Deucher return -EINVAL; 732d38ceaf9SAlex Deucher } 733d38ceaf9SAlex Deucher size = min(sizeof(atcs_output), size); 734d38ceaf9SAlex Deucher 735d38ceaf9SAlex Deucher memcpy(&atcs_output, info->buffer.pointer, size); 736d38ceaf9SAlex Deucher 737d38ceaf9SAlex Deucher kfree(info); 738d38ceaf9SAlex Deucher 739d38ceaf9SAlex Deucher switch (atcs_output.ret_val) { 740d38ceaf9SAlex Deucher case ATCS_REQUEST_REFUSED: 741d38ceaf9SAlex Deucher default: 742d38ceaf9SAlex Deucher return -EINVAL; 743d38ceaf9SAlex Deucher case ATCS_REQUEST_COMPLETE: 744d38ceaf9SAlex Deucher return 0; 745d38ceaf9SAlex Deucher case ATCS_REQUEST_IN_PROGRESS: 746d38ceaf9SAlex Deucher udelay(10); 747d38ceaf9SAlex Deucher break; 748d38ceaf9SAlex Deucher } 749d38ceaf9SAlex Deucher } 750d38ceaf9SAlex Deucher 751d38ceaf9SAlex Deucher return 0; 752d38ceaf9SAlex Deucher } 753d38ceaf9SAlex Deucher 754d38ceaf9SAlex Deucher /** 75516eb48c6SSathishkumar S * amdgpu_acpi_power_shift_control 75616eb48c6SSathishkumar S * 75716eb48c6SSathishkumar S * @adev: amdgpu_device pointer 75816eb48c6SSathishkumar S * @dev_state: device acpi state 75916eb48c6SSathishkumar S * @drv_state: driver state 76016eb48c6SSathishkumar S * 76116eb48c6SSathishkumar S * Executes the POWER_SHIFT_CONTROL method to 76216eb48c6SSathishkumar S * communicate current dGPU device state and 76316eb48c6SSathishkumar S * driver state to APU/SBIOS. 76416eb48c6SSathishkumar S * returns 0 on success, error on failure. 76516eb48c6SSathishkumar S */ 76616eb48c6SSathishkumar S int amdgpu_acpi_power_shift_control(struct amdgpu_device *adev, 76716eb48c6SSathishkumar S u8 dev_state, bool drv_state) 76816eb48c6SSathishkumar S { 76916eb48c6SSathishkumar S union acpi_object *info; 77016eb48c6SSathishkumar S struct amdgpu_atcs *atcs = &amdgpu_acpi_priv.atcs; 77116eb48c6SSathishkumar S struct atcs_pwr_shift_input atcs_input; 77216eb48c6SSathishkumar S struct acpi_buffer params; 77316eb48c6SSathishkumar S 77416eb48c6SSathishkumar S if (!amdgpu_acpi_is_power_shift_control_supported()) 77516eb48c6SSathishkumar S return -EINVAL; 77616eb48c6SSathishkumar S 77716eb48c6SSathishkumar S atcs_input.size = sizeof(struct atcs_pwr_shift_input); 77816eb48c6SSathishkumar S /* dGPU id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) */ 77916eb48c6SSathishkumar S atcs_input.dgpu_id = adev->pdev->devfn | (adev->pdev->bus->number << 8); 78016eb48c6SSathishkumar S atcs_input.dev_acpi_state = dev_state; 78116eb48c6SSathishkumar S atcs_input.drv_state = drv_state; 78216eb48c6SSathishkumar S 78316eb48c6SSathishkumar S params.length = sizeof(struct atcs_pwr_shift_input); 78416eb48c6SSathishkumar S params.pointer = &atcs_input; 78516eb48c6SSathishkumar S 78616eb48c6SSathishkumar S info = amdgpu_atcs_call(atcs, ATCS_FUNCTION_POWER_SHIFT_CONTROL, ¶ms); 78716eb48c6SSathishkumar S if (!info) { 78816eb48c6SSathishkumar S DRM_ERROR("ATCS PSC update failed\n"); 78916eb48c6SSathishkumar S return -EIO; 79016eb48c6SSathishkumar S } 79116eb48c6SSathishkumar S 79216eb48c6SSathishkumar S return 0; 79316eb48c6SSathishkumar S } 79416eb48c6SSathishkumar S 79516eb48c6SSathishkumar S /** 7963fa8f89dSSathishkumar S * amdgpu_acpi_smart_shift_update - update dGPU device state to SBIOS 7973fa8f89dSSathishkumar S * 7983fa8f89dSSathishkumar S * @dev: drm_device pointer 7993fa8f89dSSathishkumar S * @ss_state: current smart shift event 8003fa8f89dSSathishkumar S * 8013fa8f89dSSathishkumar S * returns 0 on success, 8023fa8f89dSSathishkumar S * otherwise return error number. 8033fa8f89dSSathishkumar S */ 8043fa8f89dSSathishkumar S int amdgpu_acpi_smart_shift_update(struct drm_device *dev, enum amdgpu_ss ss_state) 8053fa8f89dSSathishkumar S { 8063fa8f89dSSathishkumar S struct amdgpu_device *adev = drm_to_adev(dev); 8073fa8f89dSSathishkumar S int r; 8083fa8f89dSSathishkumar S 8093fa8f89dSSathishkumar S if (!amdgpu_device_supports_smart_shift(dev)) 8103fa8f89dSSathishkumar S return 0; 8113fa8f89dSSathishkumar S 8123fa8f89dSSathishkumar S switch (ss_state) { 8133fa8f89dSSathishkumar S /* SBIOS trigger “stop”, “enable” and “start” at D0, Driver Operational. 8143fa8f89dSSathishkumar S * SBIOS trigger “stop” at D3, Driver Not Operational. 8153fa8f89dSSathishkumar S * SBIOS trigger “stop” and “disable” at D0, Driver NOT operational. 8163fa8f89dSSathishkumar S */ 8173fa8f89dSSathishkumar S case AMDGPU_SS_DRV_LOAD: 8183fa8f89dSSathishkumar S r = amdgpu_acpi_power_shift_control(adev, 8193fa8f89dSSathishkumar S AMDGPU_ATCS_PSC_DEV_STATE_D0, 8203fa8f89dSSathishkumar S AMDGPU_ATCS_PSC_DRV_STATE_OPR); 8213fa8f89dSSathishkumar S break; 8223fa8f89dSSathishkumar S case AMDGPU_SS_DEV_D0: 8233fa8f89dSSathishkumar S r = amdgpu_acpi_power_shift_control(adev, 8243fa8f89dSSathishkumar S AMDGPU_ATCS_PSC_DEV_STATE_D0, 8253fa8f89dSSathishkumar S AMDGPU_ATCS_PSC_DRV_STATE_OPR); 8263fa8f89dSSathishkumar S break; 8273fa8f89dSSathishkumar S case AMDGPU_SS_DEV_D3: 8283fa8f89dSSathishkumar S r = amdgpu_acpi_power_shift_control(adev, 8293fa8f89dSSathishkumar S AMDGPU_ATCS_PSC_DEV_STATE_D3_HOT, 8303fa8f89dSSathishkumar S AMDGPU_ATCS_PSC_DRV_STATE_NOT_OPR); 8313fa8f89dSSathishkumar S break; 8323fa8f89dSSathishkumar S case AMDGPU_SS_DRV_UNLOAD: 8333fa8f89dSSathishkumar S r = amdgpu_acpi_power_shift_control(adev, 8343fa8f89dSSathishkumar S AMDGPU_ATCS_PSC_DEV_STATE_D0, 8353fa8f89dSSathishkumar S AMDGPU_ATCS_PSC_DRV_STATE_NOT_OPR); 8363fa8f89dSSathishkumar S break; 8373fa8f89dSSathishkumar S default: 8383fa8f89dSSathishkumar S return -EINVAL; 8393fa8f89dSSathishkumar S } 8403fa8f89dSSathishkumar S 8413fa8f89dSSathishkumar S return r; 8423fa8f89dSSathishkumar S } 8433fa8f89dSSathishkumar S 844*40e39d72SSrinivasan Shanmugam #ifdef CONFIG_ACPI_NUMA 8451cc82301SLijo Lazar static inline uint64_t amdgpu_acpi_get_numa_size(int nid) 8461cc82301SLijo Lazar { 8471cc82301SLijo Lazar /* This is directly using si_meminfo_node implementation as the 8481cc82301SLijo Lazar * function is not exported. 8491cc82301SLijo Lazar */ 8501cc82301SLijo Lazar int zone_type; 8511cc82301SLijo Lazar uint64_t managed_pages = 0; 8521cc82301SLijo Lazar 8531cc82301SLijo Lazar pg_data_t *pgdat = NODE_DATA(nid); 8541cc82301SLijo Lazar 8551cc82301SLijo Lazar for (zone_type = 0; zone_type < MAX_NR_ZONES; zone_type++) 8561cc82301SLijo Lazar managed_pages += 8571cc82301SLijo Lazar zone_managed_pages(&pgdat->node_zones[zone_type]); 8581cc82301SLijo Lazar return managed_pages * PAGE_SIZE; 8591cc82301SLijo Lazar } 8601cc82301SLijo Lazar 8611cc82301SLijo Lazar static struct amdgpu_numa_info *amdgpu_acpi_get_numa_info(uint32_t pxm) 8621cc82301SLijo Lazar { 8631cc82301SLijo Lazar struct amdgpu_numa_info *numa_info; 8641cc82301SLijo Lazar int nid; 8651cc82301SLijo Lazar 8661cc82301SLijo Lazar numa_info = xa_load(&numa_info_xa, pxm); 8671cc82301SLijo Lazar 8681cc82301SLijo Lazar if (!numa_info) { 8691cc82301SLijo Lazar struct sysinfo info; 8701cc82301SLijo Lazar 8711cc82301SLijo Lazar numa_info = kzalloc(sizeof *numa_info, GFP_KERNEL); 8721cc82301SLijo Lazar if (!numa_info) 8731cc82301SLijo Lazar return NULL; 8741cc82301SLijo Lazar 8751cc82301SLijo Lazar nid = pxm_to_node(pxm); 8761cc82301SLijo Lazar numa_info->pxm = pxm; 8771cc82301SLijo Lazar numa_info->nid = nid; 8781cc82301SLijo Lazar 8791cc82301SLijo Lazar if (numa_info->nid == NUMA_NO_NODE) { 8801cc82301SLijo Lazar si_meminfo(&info); 8811cc82301SLijo Lazar numa_info->size = info.totalram * info.mem_unit; 8821cc82301SLijo Lazar } else { 8831cc82301SLijo Lazar numa_info->size = amdgpu_acpi_get_numa_size(nid); 8841cc82301SLijo Lazar } 8851cc82301SLijo Lazar xa_store(&numa_info_xa, numa_info->pxm, numa_info, GFP_KERNEL); 8861cc82301SLijo Lazar } 8871cc82301SLijo Lazar 8881cc82301SLijo Lazar return numa_info; 8891cc82301SLijo Lazar } 890*40e39d72SSrinivasan Shanmugam #endif 8911cc82301SLijo Lazar 8923fa8f89dSSathishkumar S /** 8934d5275abSLijo Lazar * amdgpu_acpi_get_node_id - obtain the NUMA node id for corresponding amdgpu 8944d5275abSLijo Lazar * acpi device handle 8954d5275abSLijo Lazar * 8964d5275abSLijo Lazar * @handle: acpi handle 8974d5275abSLijo Lazar * @nid: NUMA Node id returned by the platform firmware 8984d5275abSLijo Lazar * 8994d5275abSLijo Lazar * Queries the ACPI interface to fetch the corresponding NUMA Node ID for a 9004d5275abSLijo Lazar * given amdgpu acpi device. 9014d5275abSLijo Lazar * 9024d5275abSLijo Lazar * Returns ACPI STATUS OK with Node ID on success or the corresponding failure reason 9034d5275abSLijo Lazar */ 9041cc82301SLijo Lazar acpi_status amdgpu_acpi_get_node_id(acpi_handle handle, 9051cc82301SLijo Lazar struct amdgpu_numa_info **numa_info) 9064d5275abSLijo Lazar { 9074d5275abSLijo Lazar #ifdef CONFIG_ACPI_NUMA 9084d5275abSLijo Lazar u64 pxm; 9094d5275abSLijo Lazar acpi_status status; 9104d5275abSLijo Lazar 9111cc82301SLijo Lazar if (!numa_info) 9121cc82301SLijo Lazar return_ACPI_STATUS(AE_ERROR); 9131cc82301SLijo Lazar 9144d5275abSLijo Lazar status = acpi_evaluate_integer(handle, "_PXM", NULL, &pxm); 9154d5275abSLijo Lazar 9164d5275abSLijo Lazar if (ACPI_FAILURE(status)) 9174d5275abSLijo Lazar return status; 9184d5275abSLijo Lazar 9191cc82301SLijo Lazar *numa_info = amdgpu_acpi_get_numa_info(pxm); 9201cc82301SLijo Lazar 9211cc82301SLijo Lazar if (!*numa_info) 9221cc82301SLijo Lazar return_ACPI_STATUS(AE_ERROR); 9234d5275abSLijo Lazar 9244d5275abSLijo Lazar return_ACPI_STATUS(AE_OK); 9254d5275abSLijo Lazar #else 9264d5275abSLijo Lazar return_ACPI_STATUS(AE_NOT_EXIST); 9274d5275abSLijo Lazar #endif 9284d5275abSLijo Lazar } 9294d5275abSLijo Lazar 9304d5275abSLijo Lazar struct amdgpu_acpi_dev_info *amdgpu_acpi_get_dev(u16 bdf) 9314d5275abSLijo Lazar { 9324d5275abSLijo Lazar struct amdgpu_acpi_dev_info *acpi_dev; 9334d5275abSLijo Lazar 9344d5275abSLijo Lazar if (list_empty(&amdgpu_acpi_dev_list)) 9354d5275abSLijo Lazar return NULL; 9364d5275abSLijo Lazar 9374d5275abSLijo Lazar list_for_each_entry(acpi_dev, &amdgpu_acpi_dev_list, list) 9384d5275abSLijo Lazar if (acpi_dev->bdf == bdf) 9394d5275abSLijo Lazar return acpi_dev; 9404d5275abSLijo Lazar 9414d5275abSLijo Lazar return NULL; 9424d5275abSLijo Lazar } 9434d5275abSLijo Lazar 9444d5275abSLijo Lazar static int amdgpu_acpi_dev_init(struct amdgpu_acpi_dev_info **dev_info, 9454d5275abSLijo Lazar struct amdgpu_acpi_xcc_info *xcc_info, u16 bdf) 9464d5275abSLijo Lazar { 9474d5275abSLijo Lazar struct amdgpu_acpi_dev_info *tmp; 9484d5275abSLijo Lazar union acpi_object *obj; 9494d5275abSLijo Lazar int ret = -ENOENT; 9504d5275abSLijo Lazar 9514d5275abSLijo Lazar *dev_info = NULL; 9524d5275abSLijo Lazar tmp = kzalloc(sizeof(struct amdgpu_acpi_dev_info), GFP_KERNEL); 9534d5275abSLijo Lazar if (!tmp) 9544d5275abSLijo Lazar return -ENOMEM; 9554d5275abSLijo Lazar 9564d5275abSLijo Lazar INIT_LIST_HEAD(&tmp->xcc_list); 9574d5275abSLijo Lazar INIT_LIST_HEAD(&tmp->list); 9584d5275abSLijo Lazar tmp->bdf = bdf; 9594d5275abSLijo Lazar 9604d5275abSLijo Lazar obj = acpi_evaluate_dsm_typed(xcc_info->handle, &amd_xcc_dsm_guid, 0, 9614d5275abSLijo Lazar AMD_XCC_DSM_GET_SUPP_MODE, NULL, 9624d5275abSLijo Lazar ACPI_TYPE_INTEGER); 9634d5275abSLijo Lazar 9644d5275abSLijo Lazar if (!obj) { 9654d5275abSLijo Lazar acpi_handle_debug(xcc_info->handle, 9664d5275abSLijo Lazar "_DSM function %d evaluation failed", 9674d5275abSLijo Lazar AMD_XCC_DSM_GET_SUPP_MODE); 9684d5275abSLijo Lazar ret = -ENOENT; 9694d5275abSLijo Lazar goto out; 9704d5275abSLijo Lazar } 9714d5275abSLijo Lazar 9724d5275abSLijo Lazar tmp->supp_xcp_mode = obj->integer.value & 0xFFFF; 9734d5275abSLijo Lazar ACPI_FREE(obj); 9744d5275abSLijo Lazar 9754d5275abSLijo Lazar obj = acpi_evaluate_dsm_typed(xcc_info->handle, &amd_xcc_dsm_guid, 0, 9764d5275abSLijo Lazar AMD_XCC_DSM_GET_XCP_MODE, NULL, 9774d5275abSLijo Lazar ACPI_TYPE_INTEGER); 9784d5275abSLijo Lazar 9794d5275abSLijo Lazar if (!obj) { 9804d5275abSLijo Lazar acpi_handle_debug(xcc_info->handle, 9814d5275abSLijo Lazar "_DSM function %d evaluation failed", 9824d5275abSLijo Lazar AMD_XCC_DSM_GET_XCP_MODE); 9834d5275abSLijo Lazar ret = -ENOENT; 9844d5275abSLijo Lazar goto out; 9854d5275abSLijo Lazar } 9864d5275abSLijo Lazar 9874d5275abSLijo Lazar tmp->xcp_mode = obj->integer.value & 0xFFFF; 9884d5275abSLijo Lazar tmp->mem_mode = (obj->integer.value >> 32) & 0xFFFF; 9894d5275abSLijo Lazar ACPI_FREE(obj); 9904d5275abSLijo Lazar 9914d5275abSLijo Lazar /* Evaluate DSMs and fill XCC information */ 9924d5275abSLijo Lazar obj = acpi_evaluate_dsm_typed(xcc_info->handle, &amd_xcc_dsm_guid, 0, 9934d5275abSLijo Lazar AMD_XCC_DSM_GET_TMR_INFO, NULL, 9944d5275abSLijo Lazar ACPI_TYPE_PACKAGE); 9954d5275abSLijo Lazar 9964d5275abSLijo Lazar if (!obj || obj->package.count < 2) { 9974d5275abSLijo Lazar acpi_handle_debug(xcc_info->handle, 9984d5275abSLijo Lazar "_DSM function %d evaluation failed", 9994d5275abSLijo Lazar AMD_XCC_DSM_GET_TMR_INFO); 10004d5275abSLijo Lazar ret = -ENOENT; 10014d5275abSLijo Lazar goto out; 10024d5275abSLijo Lazar } 10034d5275abSLijo Lazar 10044d5275abSLijo Lazar tmp->tmr_base = obj->package.elements[0].integer.value; 10054d5275abSLijo Lazar tmp->tmr_size = obj->package.elements[1].integer.value; 10064d5275abSLijo Lazar ACPI_FREE(obj); 10074d5275abSLijo Lazar 10084d5275abSLijo Lazar DRM_DEBUG_DRIVER( 10094d5275abSLijo Lazar "New dev(%x): Supported xcp mode: %x curr xcp_mode : %x mem mode : %x, tmr base: %llx tmr size: %llx ", 10104d5275abSLijo Lazar tmp->bdf, tmp->supp_xcp_mode, tmp->xcp_mode, tmp->mem_mode, 10114d5275abSLijo Lazar tmp->tmr_base, tmp->tmr_size); 10124d5275abSLijo Lazar list_add_tail(&tmp->list, &amdgpu_acpi_dev_list); 10134d5275abSLijo Lazar *dev_info = tmp; 10144d5275abSLijo Lazar 10154d5275abSLijo Lazar return 0; 10164d5275abSLijo Lazar 10174d5275abSLijo Lazar out: 10184d5275abSLijo Lazar if (obj) 10194d5275abSLijo Lazar ACPI_FREE(obj); 10204d5275abSLijo Lazar kfree(tmp); 10214d5275abSLijo Lazar 10224d5275abSLijo Lazar return ret; 10234d5275abSLijo Lazar } 10244d5275abSLijo Lazar 10254d5275abSLijo Lazar static int amdgpu_acpi_get_xcc_info(struct amdgpu_acpi_xcc_info *xcc_info, 10264d5275abSLijo Lazar u16 *bdf) 10274d5275abSLijo Lazar { 10284d5275abSLijo Lazar union acpi_object *obj; 10294d5275abSLijo Lazar acpi_status status; 10304d5275abSLijo Lazar int ret = -ENOENT; 10314d5275abSLijo Lazar 10324d5275abSLijo Lazar obj = acpi_evaluate_dsm_typed(xcc_info->handle, &amd_xcc_dsm_guid, 0, 10334d5275abSLijo Lazar AMD_XCC_DSM_GET_NUM_FUNCS, NULL, 10344d5275abSLijo Lazar ACPI_TYPE_INTEGER); 10354d5275abSLijo Lazar 10364d5275abSLijo Lazar if (!obj || obj->integer.value != AMD_XCC_DSM_NUM_FUNCS) 10374d5275abSLijo Lazar goto out; 10384d5275abSLijo Lazar ACPI_FREE(obj); 10394d5275abSLijo Lazar 10404d5275abSLijo Lazar /* Evaluate DSMs and fill XCC information */ 10414d5275abSLijo Lazar obj = acpi_evaluate_dsm_typed(xcc_info->handle, &amd_xcc_dsm_guid, 0, 10424d5275abSLijo Lazar AMD_XCC_DSM_GET_VF_XCC_MAPPING, NULL, 10434d5275abSLijo Lazar ACPI_TYPE_INTEGER); 10444d5275abSLijo Lazar 10454d5275abSLijo Lazar if (!obj) { 10464d5275abSLijo Lazar acpi_handle_debug(xcc_info->handle, 10474d5275abSLijo Lazar "_DSM function %d evaluation failed", 10484d5275abSLijo Lazar AMD_XCC_DSM_GET_VF_XCC_MAPPING); 10494d5275abSLijo Lazar ret = -EINVAL; 10504d5275abSLijo Lazar goto out; 10514d5275abSLijo Lazar } 10524d5275abSLijo Lazar 10534d5275abSLijo Lazar /* PF xcc id [39:32] */ 10544d5275abSLijo Lazar xcc_info->phy_id = (obj->integer.value >> 32) & 0xFF; 10554d5275abSLijo Lazar /* xcp node of this xcc [47:40] */ 10564d5275abSLijo Lazar xcc_info->xcp_node = (obj->integer.value >> 40) & 0xFF; 10574d5275abSLijo Lazar /* PF bus/dev/fn of this xcc [63:48] */ 10584d5275abSLijo Lazar *bdf = (obj->integer.value >> 48) & 0xFFFF; 10594d5275abSLijo Lazar ACPI_FREE(obj); 10604d5275abSLijo Lazar obj = NULL; 10614d5275abSLijo Lazar 10621cc82301SLijo Lazar status = 10631cc82301SLijo Lazar amdgpu_acpi_get_node_id(xcc_info->handle, &xcc_info->numa_info); 10644d5275abSLijo Lazar 10654d5275abSLijo Lazar /* TODO: check if this check is required */ 10664d5275abSLijo Lazar if (ACPI_SUCCESS(status)) 10674d5275abSLijo Lazar ret = 0; 10684d5275abSLijo Lazar out: 10694d5275abSLijo Lazar if (obj) 10704d5275abSLijo Lazar ACPI_FREE(obj); 10714d5275abSLijo Lazar 10724d5275abSLijo Lazar return ret; 10734d5275abSLijo Lazar } 10744d5275abSLijo Lazar 10754d5275abSLijo Lazar static int amdgpu_acpi_enumerate_xcc(void) 10764d5275abSLijo Lazar { 10774d5275abSLijo Lazar struct amdgpu_acpi_dev_info *dev_info = NULL; 10784d5275abSLijo Lazar struct amdgpu_acpi_xcc_info *xcc_info; 10794d5275abSLijo Lazar struct acpi_device *acpi_dev; 10804d5275abSLijo Lazar char hid[ACPI_ID_LEN]; 10814d5275abSLijo Lazar int ret, id; 10824d5275abSLijo Lazar u16 bdf; 10834d5275abSLijo Lazar 10844d5275abSLijo Lazar INIT_LIST_HEAD(&amdgpu_acpi_dev_list); 10851cc82301SLijo Lazar xa_init(&numa_info_xa); 10864d5275abSLijo Lazar 10874d5275abSLijo Lazar for (id = 0; id < AMD_XCC_MAX_HID; id++) { 10884d5275abSLijo Lazar sprintf(hid, "%s%d", "AMD", AMD_XCC_HID_START + id); 10894d5275abSLijo Lazar acpi_dev = acpi_dev_get_first_match_dev(hid, NULL, -1); 10904d5275abSLijo Lazar /* These ACPI objects are expected to be in sequential order. If 10914d5275abSLijo Lazar * one is not found, no need to check the rest. 10924d5275abSLijo Lazar */ 10934d5275abSLijo Lazar if (!acpi_dev) { 10944d5275abSLijo Lazar DRM_DEBUG_DRIVER("No matching acpi device found for %s", 10954d5275abSLijo Lazar hid); 10964d5275abSLijo Lazar break; 10974d5275abSLijo Lazar } 10984d5275abSLijo Lazar 10994d5275abSLijo Lazar xcc_info = kzalloc(sizeof(struct amdgpu_acpi_xcc_info), 11004d5275abSLijo Lazar GFP_KERNEL); 11014d5275abSLijo Lazar if (!xcc_info) { 11024d5275abSLijo Lazar DRM_ERROR("Failed to allocate memory for xcc info\n"); 11034d5275abSLijo Lazar return -ENOMEM; 11044d5275abSLijo Lazar } 11054d5275abSLijo Lazar 11064d5275abSLijo Lazar INIT_LIST_HEAD(&xcc_info->list); 11074d5275abSLijo Lazar xcc_info->handle = acpi_device_handle(acpi_dev); 11084d5275abSLijo Lazar acpi_dev_put(acpi_dev); 11094d5275abSLijo Lazar 11104d5275abSLijo Lazar ret = amdgpu_acpi_get_xcc_info(xcc_info, &bdf); 11114d5275abSLijo Lazar if (ret) { 11124d5275abSLijo Lazar kfree(xcc_info); 11134d5275abSLijo Lazar continue; 11144d5275abSLijo Lazar } 11154d5275abSLijo Lazar 11164d5275abSLijo Lazar dev_info = amdgpu_acpi_get_dev(bdf); 11174d5275abSLijo Lazar 11184d5275abSLijo Lazar if (!dev_info) 11194d5275abSLijo Lazar ret = amdgpu_acpi_dev_init(&dev_info, xcc_info, bdf); 11204d5275abSLijo Lazar 11214d5275abSLijo Lazar if (ret == -ENOMEM) 11224d5275abSLijo Lazar return ret; 11234d5275abSLijo Lazar 11244d5275abSLijo Lazar if (!dev_info) { 11254d5275abSLijo Lazar kfree(xcc_info); 11264d5275abSLijo Lazar continue; 11274d5275abSLijo Lazar } 11284d5275abSLijo Lazar 11294d5275abSLijo Lazar list_add_tail(&xcc_info->list, &dev_info->xcc_list); 11304d5275abSLijo Lazar } 11314d5275abSLijo Lazar 11324d5275abSLijo Lazar return 0; 11334d5275abSLijo Lazar } 11344d5275abSLijo Lazar 11356e018822SLijo Lazar int amdgpu_acpi_get_tmr_info(struct amdgpu_device *adev, u64 *tmr_offset, 11366e018822SLijo Lazar u64 *tmr_size) 11376e018822SLijo Lazar { 11386e018822SLijo Lazar struct amdgpu_acpi_dev_info *dev_info; 11396e018822SLijo Lazar u16 bdf; 11406e018822SLijo Lazar 11416e018822SLijo Lazar if (!tmr_offset || !tmr_size) 11426e018822SLijo Lazar return -EINVAL; 11436e018822SLijo Lazar 11446e018822SLijo Lazar bdf = (adev->pdev->bus->number << 8) | adev->pdev->devfn; 11456e018822SLijo Lazar dev_info = amdgpu_acpi_get_dev(bdf); 11466e018822SLijo Lazar if (!dev_info) 11476e018822SLijo Lazar return -ENOENT; 11486e018822SLijo Lazar 11496e018822SLijo Lazar *tmr_offset = dev_info->tmr_base; 11506e018822SLijo Lazar *tmr_size = dev_info->tmr_size; 11516e018822SLijo Lazar 11526e018822SLijo Lazar return 0; 11536e018822SLijo Lazar } 11546e018822SLijo Lazar 1155fa0497c3SLijo Lazar int amdgpu_acpi_get_mem_info(struct amdgpu_device *adev, int xcc_id, 1156fa0497c3SLijo Lazar struct amdgpu_numa_info *numa_info) 1157fa0497c3SLijo Lazar { 1158fa0497c3SLijo Lazar struct amdgpu_acpi_dev_info *dev_info; 1159fa0497c3SLijo Lazar struct amdgpu_acpi_xcc_info *xcc_info; 1160fa0497c3SLijo Lazar u16 bdf; 1161fa0497c3SLijo Lazar 1162fa0497c3SLijo Lazar if (!numa_info) 1163fa0497c3SLijo Lazar return -EINVAL; 1164fa0497c3SLijo Lazar 1165fa0497c3SLijo Lazar bdf = (adev->pdev->bus->number << 8) | adev->pdev->devfn; 1166fa0497c3SLijo Lazar dev_info = amdgpu_acpi_get_dev(bdf); 1167fa0497c3SLijo Lazar if (!dev_info) 1168fa0497c3SLijo Lazar return -ENOENT; 1169fa0497c3SLijo Lazar 1170fa0497c3SLijo Lazar list_for_each_entry(xcc_info, &dev_info->xcc_list, list) { 1171fa0497c3SLijo Lazar if (xcc_info->phy_id == xcc_id) { 1172fa0497c3SLijo Lazar memcpy(numa_info, xcc_info->numa_info, 1173fa0497c3SLijo Lazar sizeof(*numa_info)); 1174fa0497c3SLijo Lazar return 0; 1175fa0497c3SLijo Lazar } 1176fa0497c3SLijo Lazar } 1177fa0497c3SLijo Lazar 1178fa0497c3SLijo Lazar return -ENOENT; 1179fa0497c3SLijo Lazar } 1180fa0497c3SLijo Lazar 11814d5275abSLijo Lazar /** 1182d38ceaf9SAlex Deucher * amdgpu_acpi_event - handle notify events 1183d38ceaf9SAlex Deucher * 1184d38ceaf9SAlex Deucher * @nb: notifier block 1185d38ceaf9SAlex Deucher * @val: val 1186d38ceaf9SAlex Deucher * @data: acpi event 1187d38ceaf9SAlex Deucher * 1188d38ceaf9SAlex Deucher * Calls relevant amdgpu functions in response to various 1189d38ceaf9SAlex Deucher * acpi events. 1190d38ceaf9SAlex Deucher * Returns NOTIFY code 1191d38ceaf9SAlex Deucher */ 1192d38ceaf9SAlex Deucher static int amdgpu_acpi_event(struct notifier_block *nb, 1193d38ceaf9SAlex Deucher unsigned long val, 1194d38ceaf9SAlex Deucher void *data) 1195d38ceaf9SAlex Deucher { 1196d38ceaf9SAlex Deucher struct amdgpu_device *adev = container_of(nb, struct amdgpu_device, acpi_nb); 1197d38ceaf9SAlex Deucher struct acpi_bus_event *entry = (struct acpi_bus_event *)data; 1198d38ceaf9SAlex Deucher 1199d38ceaf9SAlex Deucher if (strcmp(entry->device_class, ACPI_AC_CLASS) == 0) { 1200d38ceaf9SAlex Deucher if (power_supply_is_system_supplied() > 0) 1201d38ceaf9SAlex Deucher DRM_DEBUG_DRIVER("pm: AC\n"); 1202d38ceaf9SAlex Deucher else 1203d38ceaf9SAlex Deucher DRM_DEBUG_DRIVER("pm: DC\n"); 1204d38ceaf9SAlex Deucher 1205d38ceaf9SAlex Deucher amdgpu_pm_acpi_event_handler(adev); 1206d38ceaf9SAlex Deucher } 1207d38ceaf9SAlex Deucher 1208d38ceaf9SAlex Deucher /* Check for pending SBIOS requests */ 1209d38ceaf9SAlex Deucher return amdgpu_atif_handler(adev, entry); 1210d38ceaf9SAlex Deucher } 1211d38ceaf9SAlex Deucher 1212d38ceaf9SAlex Deucher /* Call all ACPI methods here */ 1213d38ceaf9SAlex Deucher /** 1214d38ceaf9SAlex Deucher * amdgpu_acpi_init - init driver acpi support 1215d38ceaf9SAlex Deucher * 1216d38ceaf9SAlex Deucher * @adev: amdgpu_device pointer 1217d38ceaf9SAlex Deucher * 1218d38ceaf9SAlex Deucher * Verifies the AMD ACPI interfaces and registers with the acpi 1219d38ceaf9SAlex Deucher * notifier chain (all asics). 1220d38ceaf9SAlex Deucher * Returns 0 on success, error on failure. 1221d38ceaf9SAlex Deucher */ 1222d38ceaf9SAlex Deucher int amdgpu_acpi_init(struct amdgpu_device *adev) 1223d38ceaf9SAlex Deucher { 1224f9b7f370SAlex Deucher struct amdgpu_atif *atif = &amdgpu_acpi_priv.atif; 1225d38ceaf9SAlex Deucher 12269c27bc97SYe Bin if (atif->notifications.brightness_change) { 1227d09ef243SAlex Deucher if (adev->dc_enabled) { 122897d798b2SAlex Deucher #if defined(CONFIG_DRM_AMD_DC) 122997d798b2SAlex Deucher struct amdgpu_display_manager *dm = &adev->dm; 1230556bdae3SJingyu Wang 12317fd13baeSAlex Deucher if (dm->backlight_dev[0]) 12327fd13baeSAlex Deucher atif->bd = dm->backlight_dev[0]; 123397d798b2SAlex Deucher #endif 123497d798b2SAlex Deucher } else { 1235d38ceaf9SAlex Deucher struct drm_encoder *tmp; 1236d38ceaf9SAlex Deucher 1237d38ceaf9SAlex Deucher /* Find the encoder controlling the brightness */ 12384a580877SLuben Tuikov list_for_each_entry(tmp, &adev_to_drm(adev)->mode_config.encoder_list, 1239d38ceaf9SAlex Deucher head) { 1240d38ceaf9SAlex Deucher struct amdgpu_encoder *enc = to_amdgpu_encoder(tmp); 1241d38ceaf9SAlex Deucher 1242d38ceaf9SAlex Deucher if ((enc->devices & (ATOM_DEVICE_LCD_SUPPORT)) && 1243d38ceaf9SAlex Deucher enc->enc_priv) { 1244d38ceaf9SAlex Deucher struct amdgpu_encoder_atom_dig *dig = enc->enc_priv; 1245556bdae3SJingyu Wang 1246d38ceaf9SAlex Deucher if (dig->bl_dev) { 124797d798b2SAlex Deucher atif->bd = dig->bl_dev; 1248d38ceaf9SAlex Deucher break; 1249d38ceaf9SAlex Deucher } 1250d38ceaf9SAlex Deucher } 1251d38ceaf9SAlex Deucher } 1252d38ceaf9SAlex Deucher } 125397d798b2SAlex Deucher } 1254f9b7f370SAlex Deucher adev->acpi_nb.notifier_call = amdgpu_acpi_event; 1255f9b7f370SAlex Deucher register_acpi_notifier(&adev->acpi_nb); 1256f9b7f370SAlex Deucher 1257f9b7f370SAlex Deucher return 0; 1258f9b7f370SAlex Deucher } 1259f9b7f370SAlex Deucher 1260f9b7f370SAlex Deucher void amdgpu_acpi_get_backlight_caps(struct amdgpu_dm_backlight_caps *caps) 1261f9b7f370SAlex Deucher { 1262f9b7f370SAlex Deucher struct amdgpu_atif *atif = &amdgpu_acpi_priv.atif; 1263f9b7f370SAlex Deucher 1264f9b7f370SAlex Deucher caps->caps_valid = atif->backlight_caps.caps_valid; 1265f9b7f370SAlex Deucher caps->min_input_signal = atif->backlight_caps.min_input_signal; 1266f9b7f370SAlex Deucher caps->max_input_signal = atif->backlight_caps.max_input_signal; 1267f9b7f370SAlex Deucher } 1268f9b7f370SAlex Deucher 1269f9b7f370SAlex Deucher /** 1270f9b7f370SAlex Deucher * amdgpu_acpi_fini - tear down driver acpi support 1271f9b7f370SAlex Deucher * 1272f9b7f370SAlex Deucher * @adev: amdgpu_device pointer 1273f9b7f370SAlex Deucher * 1274f9b7f370SAlex Deucher * Unregisters with the acpi notifier chain (all asics). 1275f9b7f370SAlex Deucher */ 1276f9b7f370SAlex Deucher void amdgpu_acpi_fini(struct amdgpu_device *adev) 1277f9b7f370SAlex Deucher { 1278f9b7f370SAlex Deucher unregister_acpi_notifier(&adev->acpi_nb); 1279f9b7f370SAlex Deucher } 1280f9b7f370SAlex Deucher 1281f9b7f370SAlex Deucher /** 1282f9b7f370SAlex Deucher * amdgpu_atif_pci_probe_handle - look up the ATIF handle 1283f9b7f370SAlex Deucher * 1284f9b7f370SAlex Deucher * @pdev: pci device 1285f9b7f370SAlex Deucher * 1286f9b7f370SAlex Deucher * Look up the ATIF handles (all asics). 1287f9b7f370SAlex Deucher * Returns true if the handle is found, false if not. 1288f9b7f370SAlex Deucher */ 1289f9b7f370SAlex Deucher static bool amdgpu_atif_pci_probe_handle(struct pci_dev *pdev) 1290f9b7f370SAlex Deucher { 1291f9b7f370SAlex Deucher char acpi_method_name[255] = { 0 }; 1292f9b7f370SAlex Deucher struct acpi_buffer buffer = {sizeof(acpi_method_name), acpi_method_name}; 1293f9b7f370SAlex Deucher acpi_handle dhandle, atif_handle; 1294f9b7f370SAlex Deucher acpi_status status; 1295f9b7f370SAlex Deucher int ret; 1296f9b7f370SAlex Deucher 1297f9b7f370SAlex Deucher dhandle = ACPI_HANDLE(&pdev->dev); 1298f9b7f370SAlex Deucher if (!dhandle) 1299f9b7f370SAlex Deucher return false; 1300f9b7f370SAlex Deucher 1301f9b7f370SAlex Deucher status = acpi_get_handle(dhandle, "ATIF", &atif_handle); 1302556bdae3SJingyu Wang if (ACPI_FAILURE(status)) 1303f9b7f370SAlex Deucher return false; 1304556bdae3SJingyu Wang 1305f9b7f370SAlex Deucher amdgpu_acpi_priv.atif.handle = atif_handle; 1306f9b7f370SAlex Deucher acpi_get_name(amdgpu_acpi_priv.atif.handle, ACPI_FULL_PATHNAME, &buffer); 1307f9b7f370SAlex Deucher DRM_DEBUG_DRIVER("Found ATIF handle %s\n", acpi_method_name); 1308f9b7f370SAlex Deucher ret = amdgpu_atif_verify_interface(&amdgpu_acpi_priv.atif); 1309f9b7f370SAlex Deucher if (ret) { 1310f9b7f370SAlex Deucher amdgpu_acpi_priv.atif.handle = 0; 1311f9b7f370SAlex Deucher return false; 1312f9b7f370SAlex Deucher } 1313f9b7f370SAlex Deucher return true; 1314f9b7f370SAlex Deucher } 1315f9b7f370SAlex Deucher 1316f9b7f370SAlex Deucher /** 1317f9b7f370SAlex Deucher * amdgpu_atcs_pci_probe_handle - look up the ATCS handle 1318f9b7f370SAlex Deucher * 1319f9b7f370SAlex Deucher * @pdev: pci device 1320f9b7f370SAlex Deucher * 1321f9b7f370SAlex Deucher * Look up the ATCS handles (all asics). 1322f9b7f370SAlex Deucher * Returns true if the handle is found, false if not. 1323f9b7f370SAlex Deucher */ 1324f9b7f370SAlex Deucher static bool amdgpu_atcs_pci_probe_handle(struct pci_dev *pdev) 1325f9b7f370SAlex Deucher { 1326f9b7f370SAlex Deucher char acpi_method_name[255] = { 0 }; 1327f9b7f370SAlex Deucher struct acpi_buffer buffer = { sizeof(acpi_method_name), acpi_method_name }; 1328f9b7f370SAlex Deucher acpi_handle dhandle, atcs_handle; 1329f9b7f370SAlex Deucher acpi_status status; 1330f9b7f370SAlex Deucher int ret; 1331f9b7f370SAlex Deucher 1332f9b7f370SAlex Deucher dhandle = ACPI_HANDLE(&pdev->dev); 1333f9b7f370SAlex Deucher if (!dhandle) 1334f9b7f370SAlex Deucher return false; 1335f9b7f370SAlex Deucher 1336f9b7f370SAlex Deucher status = acpi_get_handle(dhandle, "ATCS", &atcs_handle); 1337556bdae3SJingyu Wang if (ACPI_FAILURE(status)) 1338f9b7f370SAlex Deucher return false; 1339556bdae3SJingyu Wang 1340f9b7f370SAlex Deucher amdgpu_acpi_priv.atcs.handle = atcs_handle; 1341f9b7f370SAlex Deucher acpi_get_name(amdgpu_acpi_priv.atcs.handle, ACPI_FULL_PATHNAME, &buffer); 1342f9b7f370SAlex Deucher DRM_DEBUG_DRIVER("Found ATCS handle %s\n", acpi_method_name); 1343f9b7f370SAlex Deucher ret = amdgpu_atcs_verify_interface(&amdgpu_acpi_priv.atcs); 1344f9b7f370SAlex Deucher if (ret) { 1345f9b7f370SAlex Deucher amdgpu_acpi_priv.atcs.handle = 0; 1346f9b7f370SAlex Deucher return false; 1347f9b7f370SAlex Deucher } 1348f9b7f370SAlex Deucher return true; 1349f9b7f370SAlex Deucher } 1350f9b7f370SAlex Deucher 1351aaee0ce4STim Huang 1352aaee0ce4STim Huang /** 1353aaee0ce4STim Huang * amdgpu_acpi_should_gpu_reset 1354aaee0ce4STim Huang * 1355aaee0ce4STim Huang * @adev: amdgpu_device_pointer 1356aaee0ce4STim Huang * 1357aaee0ce4STim Huang * returns true if should reset GPU, false if not 1358aaee0ce4STim Huang */ 1359aaee0ce4STim Huang bool amdgpu_acpi_should_gpu_reset(struct amdgpu_device *adev) 1360aaee0ce4STim Huang { 1361980d5baeSTim Huang if ((adev->flags & AMD_IS_APU) && 1362980d5baeSTim Huang adev->gfx.imu.funcs) /* Not need to do mode2 reset for IMU enabled APUs */ 1363980d5baeSTim Huang return false; 1364980d5baeSTim Huang 1365980d5baeSTim Huang if ((adev->flags & AMD_IS_APU) && 1366980d5baeSTim Huang amdgpu_acpi_is_s3_active(adev)) 1367aaee0ce4STim Huang return false; 1368aaee0ce4STim Huang 1369aaee0ce4STim Huang if (amdgpu_sriov_vf(adev)) 1370aaee0ce4STim Huang return false; 1371aaee0ce4STim Huang 1372aaee0ce4STim Huang #if IS_ENABLED(CONFIG_SUSPEND) 1373aaee0ce4STim Huang return pm_suspend_target_state != PM_SUSPEND_TO_IDLE; 1374aaee0ce4STim Huang #else 1375aaee0ce4STim Huang return true; 1376aaee0ce4STim Huang #endif 1377aaee0ce4STim Huang } 1378aaee0ce4STim Huang 1379f9b7f370SAlex Deucher /* 1380f9b7f370SAlex Deucher * amdgpu_acpi_detect - detect ACPI ATIF/ATCS methods 1381f9b7f370SAlex Deucher * 1382f9b7f370SAlex Deucher * Check if we have the ATIF/ATCS methods and populate 1383f9b7f370SAlex Deucher * the structures in the driver. 1384f9b7f370SAlex Deucher */ 1385f9b7f370SAlex Deucher void amdgpu_acpi_detect(void) 1386f9b7f370SAlex Deucher { 1387f9b7f370SAlex Deucher struct amdgpu_atif *atif = &amdgpu_acpi_priv.atif; 1388f9b7f370SAlex Deucher struct amdgpu_atcs *atcs = &amdgpu_acpi_priv.atcs; 1389f9b7f370SAlex Deucher struct pci_dev *pdev = NULL; 1390f9b7f370SAlex Deucher int ret; 1391f9b7f370SAlex Deucher 1392f9b7f370SAlex Deucher while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) { 1393f9b7f370SAlex Deucher if (!atif->handle) 1394f9b7f370SAlex Deucher amdgpu_atif_pci_probe_handle(pdev); 1395f9b7f370SAlex Deucher if (!atcs->handle) 1396f9b7f370SAlex Deucher amdgpu_atcs_pci_probe_handle(pdev); 1397f9b7f370SAlex Deucher } 1398f9b7f370SAlex Deucher 1399f9b7f370SAlex Deucher while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, pdev)) != NULL) { 1400f9b7f370SAlex Deucher if (!atif->handle) 1401f9b7f370SAlex Deucher amdgpu_atif_pci_probe_handle(pdev); 1402f9b7f370SAlex Deucher if (!atcs->handle) 1403f9b7f370SAlex Deucher amdgpu_atcs_pci_probe_handle(pdev); 1404f9b7f370SAlex Deucher } 1405d38ceaf9SAlex Deucher 1406d38ceaf9SAlex Deucher if (atif->functions.sbios_requests && !atif->functions.system_params) { 1407d38ceaf9SAlex Deucher /* XXX check this workraround, if sbios request function is 1408d38ceaf9SAlex Deucher * present we have to see how it's configured in the system 1409d38ceaf9SAlex Deucher * params 1410d38ceaf9SAlex Deucher */ 1411d38ceaf9SAlex Deucher atif->functions.system_params = true; 1412d38ceaf9SAlex Deucher } 1413d38ceaf9SAlex Deucher 1414d38ceaf9SAlex Deucher if (atif->functions.system_params) { 1415280cf1a9SLyude Paul ret = amdgpu_atif_get_notification_params(atif); 1416d38ceaf9SAlex Deucher if (ret) { 1417d38ceaf9SAlex Deucher DRM_DEBUG_DRIVER("Call to GET_SYSTEM_PARAMS failed: %d\n", 1418d38ceaf9SAlex Deucher ret); 1419d38ceaf9SAlex Deucher /* Disable notification */ 1420d38ceaf9SAlex Deucher atif->notification_cfg.enabled = false; 1421d38ceaf9SAlex Deucher } 1422d38ceaf9SAlex Deucher } 1423d38ceaf9SAlex Deucher 1424206bbafeSDavid Francis if (atif->functions.query_backlight_transfer_characteristics) { 1425206bbafeSDavid Francis ret = amdgpu_atif_query_backlight_caps(atif); 1426206bbafeSDavid Francis if (ret) { 1427206bbafeSDavid Francis DRM_DEBUG_DRIVER("Call to QUERY_BACKLIGHT_TRANSFER_CHARACTERISTICS failed: %d\n", 1428206bbafeSDavid Francis ret); 1429206bbafeSDavid Francis atif->backlight_caps.caps_valid = false; 1430206bbafeSDavid Francis } 1431206bbafeSDavid Francis } else { 1432206bbafeSDavid Francis atif->backlight_caps.caps_valid = false; 1433206bbafeSDavid Francis } 14344d5275abSLijo Lazar 14354d5275abSLijo Lazar amdgpu_acpi_enumerate_xcc(); 14364d5275abSLijo Lazar } 14374d5275abSLijo Lazar 14384d5275abSLijo Lazar void amdgpu_acpi_release(void) 14394d5275abSLijo Lazar { 14404d5275abSLijo Lazar struct amdgpu_acpi_dev_info *dev_info, *dev_tmp; 14414d5275abSLijo Lazar struct amdgpu_acpi_xcc_info *xcc_info, *xcc_tmp; 14421cc82301SLijo Lazar struct amdgpu_numa_info *numa_info; 14431cc82301SLijo Lazar unsigned long index; 14441cc82301SLijo Lazar 14451cc82301SLijo Lazar xa_for_each(&numa_info_xa, index, numa_info) { 14461cc82301SLijo Lazar kfree(numa_info); 14471cc82301SLijo Lazar xa_erase(&numa_info_xa, index); 14481cc82301SLijo Lazar } 14494d5275abSLijo Lazar 14504d5275abSLijo Lazar if (list_empty(&amdgpu_acpi_dev_list)) 14514d5275abSLijo Lazar return; 14524d5275abSLijo Lazar 14534d5275abSLijo Lazar list_for_each_entry_safe(dev_info, dev_tmp, &amdgpu_acpi_dev_list, 14544d5275abSLijo Lazar list) { 14554d5275abSLijo Lazar list_for_each_entry_safe(xcc_info, xcc_tmp, &dev_info->xcc_list, 14564d5275abSLijo Lazar list) { 14574d5275abSLijo Lazar list_del(&xcc_info->list); 14584d5275abSLijo Lazar kfree(xcc_info); 14594d5275abSLijo Lazar } 14604d5275abSLijo Lazar 14614d5275abSLijo Lazar list_del(&dev_info->list); 14624d5275abSLijo Lazar kfree(dev_info); 14634d5275abSLijo Lazar } 1464d38ceaf9SAlex Deucher } 14654cd078dcSPrike Liang 1466f588a1bbSMario Limonciello #if IS_ENABLED(CONFIG_SUSPEND) 14674cd078dcSPrike Liang /** 146818b66aceSMario Limonciello * amdgpu_acpi_is_s3_active 146918b66aceSMario Limonciello * 147018b66aceSMario Limonciello * @adev: amdgpu_device_pointer 147118b66aceSMario Limonciello * 147218b66aceSMario Limonciello * returns true if supported, false if not. 147318b66aceSMario Limonciello */ 147418b66aceSMario Limonciello bool amdgpu_acpi_is_s3_active(struct amdgpu_device *adev) 147518b66aceSMario Limonciello { 147618b66aceSMario Limonciello return !(adev->flags & AMD_IS_APU) || 147718b66aceSMario Limonciello (pm_suspend_target_state == PM_SUSPEND_MEM); 147818b66aceSMario Limonciello } 147918b66aceSMario Limonciello 148018b66aceSMario Limonciello /** 1481d0260f62SPratik Vishwakarma * amdgpu_acpi_is_s0ix_active 14824cd078dcSPrike Liang * 14831fdbbc12SFabio M. De Francesco * @adev: amdgpu_device_pointer 14841fdbbc12SFabio M. De Francesco * 14854cd078dcSPrike Liang * returns true if supported, false if not. 14864cd078dcSPrike Liang */ 1487d0260f62SPratik Vishwakarma bool amdgpu_acpi_is_s0ix_active(struct amdgpu_device *adev) 14884cd078dcSPrike Liang { 1489f588a1bbSMario Limonciello if (!(adev->flags & AMD_IS_APU) || 1490f588a1bbSMario Limonciello (pm_suspend_target_state != PM_SUSPEND_TO_IDLE)) 1491f588a1bbSMario Limonciello return false; 1492f588a1bbSMario Limonciello 1493ca475186SMario Limonciello if (adev->asic_type < CHIP_RAVEN) 1494ca475186SMario Limonciello return false; 1495ca475186SMario Limonciello 149661ebd2feSRafael J. Wysocki /* 149761ebd2feSRafael J. Wysocki * If ACPI_FADT_LOW_POWER_S0 is not set in the FADT, it is generally 149861ebd2feSRafael J. Wysocki * risky to do any special firmware-related preparations for entering 149961ebd2feSRafael J. Wysocki * S0ix even though the system is suspending to idle, so return false 150061ebd2feSRafael J. Wysocki * in that case. 150161ebd2feSRafael J. Wysocki */ 1502cf488dcdSMario Limonciello if (!(acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0)) 1503f588a1bbSMario Limonciello dev_warn_once(adev->dev, 1504f588a1bbSMario Limonciello "Power consumption will be higher as BIOS has not been configured for suspend-to-idle.\n" 1505f588a1bbSMario Limonciello "To use suspend-to-idle change the sleep mode in BIOS setup.\n"); 1506f588a1bbSMario Limonciello 1507f588a1bbSMario Limonciello #if !IS_ENABLED(CONFIG_AMD_PMC) 1508f588a1bbSMario Limonciello dev_warn_once(adev->dev, 1509f588a1bbSMario Limonciello "Power consumption will be higher as the kernel has not been compiled with CONFIG_AMD_PMC.\n"); 1510f588a1bbSMario Limonciello #endif /* CONFIG_AMD_PMC */ 1511cf488dcdSMario Limonciello return true; 1512f588a1bbSMario Limonciello } 1513f588a1bbSMario Limonciello 1514f588a1bbSMario Limonciello #endif /* CONFIG_SUSPEND */ 1515