drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_dmub.c:191:25: sparse: sparse: cast to restricted __le32
From: kernel test robot
Date: Fri Sep 04 2026 - 23:19:04 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 654ae5d73c05bd2943d65636ce6cd0aa46e62f18
commit: 1d8cfeb69daa863a70134b8ed6df8055c418a5b0 drm/amdgpu: Pack nested ucode_info struct
date: 5 weeks ago
config: alpha-randconfig-r131-20260904 (https://download.01.org/0day-ci/archive/20260905/202609051130.28FOOCAW-lkp@xxxxxxxxx/config)
compiler: alpha-linux-gcc (GCC) 10.5.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260905/202609051130.28FOOCAW-lkp@xxxxxxxxx/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Fixes: 1d8cfeb69daa ("drm/amdgpu: Pack nested ucode_info struct")
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609051130.28FOOCAW-lkp@xxxxxxxxx/
sparse warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_dmub.c:191:25: sparse: sparse: cast to restricted __le32
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_dmub.c:195:23: sparse: sparse: cast to restricted __le32
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_dmub.c:196:23: sparse: sparse: cast to restricted __le32
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_dmub.c:201:28: sparse: sparse: cast to restricted __le32
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_dmub.c:569:37: sparse: sparse: cast to restricted __le32
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_dmub.c:577:25: sparse: sparse: cast to restricted __le32
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_dmub.c:577:25: sparse: sparse: cast to restricted __le32
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_dmub.c:577:25: sparse: sparse: cast to restricted __le32
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_dmub.c:608:47: sparse: sparse: cast to restricted __le32
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_dmub.c:610:45: sparse: sparse: cast to restricted __le32
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_dmub.c:612:45: sparse: sparse: cast to restricted __le32
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_dmub.c:615:43: sparse: sparse: cast to restricted __le32
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_dmub.c:616:43: sparse: sparse: cast to restricted __le32
vim +191 drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_dmub.c
4734e045f49d9b Alex Hung 2026-04-27 136
4734e045f49d9b Alex Hung 2026-04-27 137 int dm_dmub_hw_init(struct amdgpu_device *adev)
4734e045f49d9b Alex Hung 2026-04-27 138 {
4734e045f49d9b Alex Hung 2026-04-27 139 const struct dmcub_firmware_header_v1_0 *hdr;
4734e045f49d9b Alex Hung 2026-04-27 140 struct dmub_srv *dmub_srv = adev->dm.dmub_srv;
4734e045f49d9b Alex Hung 2026-04-27 141 struct dmub_srv_fb_info *fb_info = adev->dm.dmub_fb_info;
4734e045f49d9b Alex Hung 2026-04-27 142 const struct firmware *dmub_fw = adev->dm.dmub_fw;
4734e045f49d9b Alex Hung 2026-04-27 143 struct dc *dc = adev->dm.dc;
4734e045f49d9b Alex Hung 2026-04-27 144 struct dmcu *dmcu = adev->dm.dc->res_pool->dmcu;
4734e045f49d9b Alex Hung 2026-04-27 145 struct abm *abm = adev->dm.dc->res_pool->abm;
4734e045f49d9b Alex Hung 2026-04-27 146 struct dc_context *ctx = adev->dm.dc->ctx;
4734e045f49d9b Alex Hung 2026-04-27 147 struct dmub_srv_hw_params hw_params;
4734e045f49d9b Alex Hung 2026-04-27 148 enum dmub_status status;
4734e045f49d9b Alex Hung 2026-04-27 149 const unsigned char *fw_inst_const, *fw_bss_data;
5b69770e945caa Dillon Varone 2026-06-23 150 u32 fw_inst_const_size, fw_bss_data_size;
4734e045f49d9b Alex Hung 2026-04-27 151 bool has_hw_support;
4734e045f49d9b Alex Hung 2026-04-27 152
4734e045f49d9b Alex Hung 2026-04-27 153 if (!dmub_srv)
4734e045f49d9b Alex Hung 2026-04-27 154 /* DMUB isn't supported on the ASIC. */
4734e045f49d9b Alex Hung 2026-04-27 155 return 0;
4734e045f49d9b Alex Hung 2026-04-27 156
4734e045f49d9b Alex Hung 2026-04-27 157 if (!fb_info) {
4734e045f49d9b Alex Hung 2026-04-27 158 drm_err(adev_to_drm(adev), "No framebuffer info for DMUB service.\n");
4734e045f49d9b Alex Hung 2026-04-27 159 return -EINVAL;
4734e045f49d9b Alex Hung 2026-04-27 160 }
4734e045f49d9b Alex Hung 2026-04-27 161
4734e045f49d9b Alex Hung 2026-04-27 162 if (!dmub_fw) {
4734e045f49d9b Alex Hung 2026-04-27 163 /* Firmware required for DMUB support. */
4734e045f49d9b Alex Hung 2026-04-27 164 drm_err(adev_to_drm(adev), "No firmware provided for DMUB.\n");
4734e045f49d9b Alex Hung 2026-04-27 165 return -EINVAL;
4734e045f49d9b Alex Hung 2026-04-27 166 }
4734e045f49d9b Alex Hung 2026-04-27 167
4734e045f49d9b Alex Hung 2026-04-27 168 /* initialize register offsets for ASICs with runtime initialization available */
4734e045f49d9b Alex Hung 2026-04-27 169 if (dmub_srv->hw_funcs.init_reg_offsets)
4734e045f49d9b Alex Hung 2026-04-27 170 dmub_srv->hw_funcs.init_reg_offsets(dmub_srv, ctx);
4734e045f49d9b Alex Hung 2026-04-27 171
4734e045f49d9b Alex Hung 2026-04-27 172 status = dmub_srv_has_hw_support(dmub_srv, &has_hw_support);
4734e045f49d9b Alex Hung 2026-04-27 173 if (status != DMUB_STATUS_OK) {
4734e045f49d9b Alex Hung 2026-04-27 174 drm_err(adev_to_drm(adev), "Error checking HW support for DMUB: %d\n", status);
4734e045f49d9b Alex Hung 2026-04-27 175 return -EINVAL;
4734e045f49d9b Alex Hung 2026-04-27 176 }
4734e045f49d9b Alex Hung 2026-04-27 177
4734e045f49d9b Alex Hung 2026-04-27 178 if (!has_hw_support) {
4734e045f49d9b Alex Hung 2026-04-27 179 drm_info(adev_to_drm(adev), "DMUB unsupported on ASIC\n");
4734e045f49d9b Alex Hung 2026-04-27 180 return 0;
4734e045f49d9b Alex Hung 2026-04-27 181 }
4734e045f49d9b Alex Hung 2026-04-27 182
4734e045f49d9b Alex Hung 2026-04-27 183 /* Reset DMCUB if it was previously running - before we overwrite its memory. */
4734e045f49d9b Alex Hung 2026-04-27 184 status = dmub_srv_hw_reset(dmub_srv);
4734e045f49d9b Alex Hung 2026-04-27 185 if (status != DMUB_STATUS_OK)
4734e045f49d9b Alex Hung 2026-04-27 186 drm_warn(adev_to_drm(adev), "Error resetting DMUB HW: %d\n", status);
4734e045f49d9b Alex Hung 2026-04-27 187
4734e045f49d9b Alex Hung 2026-04-27 188 hdr = (const struct dmcub_firmware_header_v1_0 *)dmub_fw->data;
4734e045f49d9b Alex Hung 2026-04-27 189
4734e045f49d9b Alex Hung 2026-04-27 190 fw_inst_const = dmub_fw->data +
4734e045f49d9b Alex Hung 2026-04-27 @191 le32_to_cpu(hdr->header.ucode_array_offset_bytes) +
4734e045f49d9b Alex Hung 2026-04-27 192 PSP_HEADER_BYTES_256;
4734e045f49d9b Alex Hung 2026-04-27 193
4734e045f49d9b Alex Hung 2026-04-27 194 fw_bss_data = dmub_fw->data +
4734e045f49d9b Alex Hung 2026-04-27 195 le32_to_cpu(hdr->header.ucode_array_offset_bytes) +
4734e045f49d9b Alex Hung 2026-04-27 196 le32_to_cpu(hdr->inst_const_bytes);
4734e045f49d9b Alex Hung 2026-04-27 197
4734e045f49d9b Alex Hung 2026-04-27 198 /* Copy firmware and bios info into FB memory. */
4734e045f49d9b Alex Hung 2026-04-27 199 fw_inst_const_size = adev->dm.fw_inst_size;
4734e045f49d9b Alex Hung 2026-04-27 200
4734e045f49d9b Alex Hung 2026-04-27 201 fw_bss_data_size = le32_to_cpu(hdr->bss_data_bytes);
4734e045f49d9b Alex Hung 2026-04-27 202
4734e045f49d9b Alex Hung 2026-04-27 203 /* if adev->firmware.load_type == AMDGPU_FW_LOAD_PSP,
4734e045f49d9b Alex Hung 2026-04-27 204 * amdgpu_ucode_init_single_fw will load dmub firmware
4734e045f49d9b Alex Hung 2026-04-27 205 * fw_inst_const part to cw0; otherwise, the firmware back door load
4734e045f49d9b Alex Hung 2026-04-27 206 * will be done by dm_dmub_hw_init
4734e045f49d9b Alex Hung 2026-04-27 207 */
4734e045f49d9b Alex Hung 2026-04-27 208 if (adev->firmware.load_type != AMDGPU_FW_LOAD_PSP) {
4734e045f49d9b Alex Hung 2026-04-27 209 memcpy(fb_info->fb[DMUB_WINDOW_0_INST_CONST].cpu_addr, fw_inst_const,
4734e045f49d9b Alex Hung 2026-04-27 210 fw_inst_const_size);
4734e045f49d9b Alex Hung 2026-04-27 211 }
4734e045f49d9b Alex Hung 2026-04-27 212
4734e045f49d9b Alex Hung 2026-04-27 213 if (fw_bss_data_size)
4734e045f49d9b Alex Hung 2026-04-27 214 memcpy(fb_info->fb[DMUB_WINDOW_2_BSS_DATA].cpu_addr,
4734e045f49d9b Alex Hung 2026-04-27 215 fw_bss_data, fw_bss_data_size);
4734e045f49d9b Alex Hung 2026-04-27 216
4734e045f49d9b Alex Hung 2026-04-27 217 /* Copy firmware bios info into FB memory. */
4734e045f49d9b Alex Hung 2026-04-27 218 memcpy(fb_info->fb[DMUB_WINDOW_3_VBIOS].cpu_addr, adev->bios,
4734e045f49d9b Alex Hung 2026-04-27 219 adev->bios_size);
4734e045f49d9b Alex Hung 2026-04-27 220
4734e045f49d9b Alex Hung 2026-04-27 221 /* Reset regions that need to be reset. */
4734e045f49d9b Alex Hung 2026-04-27 222 memset(fb_info->fb[DMUB_WINDOW_4_MAILBOX].cpu_addr, 0,
4734e045f49d9b Alex Hung 2026-04-27 223 fb_info->fb[DMUB_WINDOW_4_MAILBOX].size);
4734e045f49d9b Alex Hung 2026-04-27 224
4734e045f49d9b Alex Hung 2026-04-27 225 memset(fb_info->fb[DMUB_WINDOW_5_TRACEBUFF].cpu_addr, 0,
4734e045f49d9b Alex Hung 2026-04-27 226 fb_info->fb[DMUB_WINDOW_5_TRACEBUFF].size);
4734e045f49d9b Alex Hung 2026-04-27 227
4734e045f49d9b Alex Hung 2026-04-27 228 memset(fb_info->fb[DMUB_WINDOW_6_FW_STATE].cpu_addr, 0,
4734e045f49d9b Alex Hung 2026-04-27 229 fb_info->fb[DMUB_WINDOW_6_FW_STATE].size);
4734e045f49d9b Alex Hung 2026-04-27 230
4734e045f49d9b Alex Hung 2026-04-27 231 memset(fb_info->fb[DMUB_WINDOW_SHARED_STATE].cpu_addr, 0,
4734e045f49d9b Alex Hung 2026-04-27 232 fb_info->fb[DMUB_WINDOW_SHARED_STATE].size);
4734e045f49d9b Alex Hung 2026-04-27 233
4734e045f49d9b Alex Hung 2026-04-27 234 /* Initialize hardware. */
4734e045f49d9b Alex Hung 2026-04-27 235 memset(&hw_params, 0, sizeof(hw_params));
4734e045f49d9b Alex Hung 2026-04-27 236 hw_params.soc_fb_info.fb_base = adev->gmc.fb_start;
4734e045f49d9b Alex Hung 2026-04-27 237 hw_params.soc_fb_info.fb_offset = adev->vm_manager.vram_base_offset;
4734e045f49d9b Alex Hung 2026-04-27 238
4734e045f49d9b Alex Hung 2026-04-27 239 /* backdoor load firmware and trigger dmub running */
4734e045f49d9b Alex Hung 2026-04-27 240 if (adev->firmware.load_type != AMDGPU_FW_LOAD_PSP)
4734e045f49d9b Alex Hung 2026-04-27 241 hw_params.load_inst_const = true;
4734e045f49d9b Alex Hung 2026-04-27 242
4734e045f49d9b Alex Hung 2026-04-27 243 if (dmcu)
4734e045f49d9b Alex Hung 2026-04-27 244 hw_params.psp_version = dmcu->psp_version;
4734e045f49d9b Alex Hung 2026-04-27 245
5b69770e945caa Dillon Varone 2026-06-23 246 hw_params.fb_info = fb_info;
4734e045f49d9b Alex Hung 2026-04-27 247
4734e045f49d9b Alex Hung 2026-04-27 248 /* Enable usb4 dpia in the FW APU */
4734e045f49d9b Alex Hung 2026-04-27 249 if (dc->caps.is_apu &&
4734e045f49d9b Alex Hung 2026-04-27 250 dc->res_pool->usb4_dpia_count != 0 &&
4734e045f49d9b Alex Hung 2026-04-27 251 !dc->debug.dpia_debug.bits.disable_dpia) {
4734e045f49d9b Alex Hung 2026-04-27 252 hw_params.dpia_supported = true;
4734e045f49d9b Alex Hung 2026-04-27 253 hw_params.disable_dpia = dc->debug.dpia_debug.bits.disable_dpia;
4734e045f49d9b Alex Hung 2026-04-27 254 hw_params.dpia_hpd_int_enable_supported = false;
4734e045f49d9b Alex Hung 2026-04-27 255 hw_params.enable_non_transparent_setconfig = dc->config.consolidated_dpia_dp_lt;
4734e045f49d9b Alex Hung 2026-04-27 256 hw_params.disable_dpia_bw_allocation = !dc->config.usb4_bw_alloc_support;
4734e045f49d9b Alex Hung 2026-04-27 257 }
4734e045f49d9b Alex Hung 2026-04-27 258
4734e045f49d9b Alex Hung 2026-04-27 259 switch (amdgpu_ip_version(adev, DCE_HWIP, 0)) {
4734e045f49d9b Alex Hung 2026-04-27 260 case IP_VERSION(3, 5, 0):
4734e045f49d9b Alex Hung 2026-04-27 261 case IP_VERSION(3, 5, 1):
4734e045f49d9b Alex Hung 2026-04-27 262 case IP_VERSION(3, 6, 0):
4734e045f49d9b Alex Hung 2026-04-27 263 case IP_VERSION(4, 2, 0):
4734e045f49d9b Alex Hung 2026-04-27 264 case IP_VERSION(4, 2, 1):
4734e045f49d9b Alex Hung 2026-04-27 265 hw_params.ips_sequential_ono = adev->external_rev_id > 0x10;
4734e045f49d9b Alex Hung 2026-04-27 266 hw_params.lower_hbr3_phy_ssc = true;
4734e045f49d9b Alex Hung 2026-04-27 267 break;
4734e045f49d9b Alex Hung 2026-04-27 268 default:
4734e045f49d9b Alex Hung 2026-04-27 269 break;
4734e045f49d9b Alex Hung 2026-04-27 270 }
4734e045f49d9b Alex Hung 2026-04-27 271
4734e045f49d9b Alex Hung 2026-04-27 272 status = dmub_srv_hw_init(dmub_srv, &hw_params);
4734e045f49d9b Alex Hung 2026-04-27 273 if (status != DMUB_STATUS_OK) {
4734e045f49d9b Alex Hung 2026-04-27 274 drm_err(adev_to_drm(adev), "Error initializing DMUB HW: %d\n", status);
4734e045f49d9b Alex Hung 2026-04-27 275 return -EINVAL;
4734e045f49d9b Alex Hung 2026-04-27 276 }
4734e045f49d9b Alex Hung 2026-04-27 277
4734e045f49d9b Alex Hung 2026-04-27 278 /* Wait for firmware load to finish. */
4734e045f49d9b Alex Hung 2026-04-27 279 status = dmub_srv_wait_for_auto_load(dmub_srv, 100000);
4734e045f49d9b Alex Hung 2026-04-27 280 if (status != DMUB_STATUS_OK)
4734e045f49d9b Alex Hung 2026-04-27 281 drm_warn(adev_to_drm(adev), "Wait for DMUB auto-load failed: %d\n", status);
4734e045f49d9b Alex Hung 2026-04-27 282
4734e045f49d9b Alex Hung 2026-04-27 283 /* Init DMCU and ABM if available. */
4734e045f49d9b Alex Hung 2026-04-27 284 if (dmcu && abm) {
4734e045f49d9b Alex Hung 2026-04-27 285 dmcu->funcs->dmcu_init(dmcu);
4734e045f49d9b Alex Hung 2026-04-27 286 abm->dmcu_is_running = dmcu->funcs->is_dmcu_initialized(dmcu);
4734e045f49d9b Alex Hung 2026-04-27 287 }
4734e045f49d9b Alex Hung 2026-04-27 288
4734e045f49d9b Alex Hung 2026-04-27 289 if (!adev->dm.dc->ctx->dmub_srv)
4734e045f49d9b Alex Hung 2026-04-27 290 adev->dm.dc->ctx->dmub_srv = dc_dmub_srv_create(adev->dm.dc, dmub_srv);
4734e045f49d9b Alex Hung 2026-04-27 291 if (!adev->dm.dc->ctx->dmub_srv) {
4734e045f49d9b Alex Hung 2026-04-27 292 drm_err(adev_to_drm(adev), "Couldn't allocate DC DMUB server!\n");
4734e045f49d9b Alex Hung 2026-04-27 293 return -ENOMEM;
4734e045f49d9b Alex Hung 2026-04-27 294 }
4734e045f49d9b Alex Hung 2026-04-27 295
4734e045f49d9b Alex Hung 2026-04-27 296 drm_info(adev_to_drm(adev), "DMUB hardware initialized: version=0x%08X\n",
4734e045f49d9b Alex Hung 2026-04-27 297 adev->dm.dmcub_fw_version);
4734e045f49d9b Alex Hung 2026-04-27 298
4734e045f49d9b Alex Hung 2026-04-27 299 /* Keeping sanity checks off if
4734e045f49d9b Alex Hung 2026-04-27 300 * DCN31 >= 4.0.59.0
4734e045f49d9b Alex Hung 2026-04-27 301 * DCN314 >= 8.0.16.0
4734e045f49d9b Alex Hung 2026-04-27 302 * Otherwise, turn on sanity checks
4734e045f49d9b Alex Hung 2026-04-27 303 */
4734e045f49d9b Alex Hung 2026-04-27 304 switch (amdgpu_ip_version(adev, DCE_HWIP, 0)) {
4734e045f49d9b Alex Hung 2026-04-27 305 case IP_VERSION(3, 1, 2):
4734e045f49d9b Alex Hung 2026-04-27 306 case IP_VERSION(3, 1, 3):
4734e045f49d9b Alex Hung 2026-04-27 307 if (adev->dm.dmcub_fw_version &&
4734e045f49d9b Alex Hung 2026-04-27 308 adev->dm.dmcub_fw_version >= DMUB_FW_VERSION(4, 0, 0) &&
4734e045f49d9b Alex Hung 2026-04-27 309 adev->dm.dmcub_fw_version < DMUB_FW_VERSION(4, 0, 59))
4734e045f49d9b Alex Hung 2026-04-27 310 adev->dm.dc->debug.sanity_checks = true;
4734e045f49d9b Alex Hung 2026-04-27 311 break;
4734e045f49d9b Alex Hung 2026-04-27 312 case IP_VERSION(3, 1, 4):
4734e045f49d9b Alex Hung 2026-04-27 313 if (adev->dm.dmcub_fw_version &&
4734e045f49d9b Alex Hung 2026-04-27 314 adev->dm.dmcub_fw_version >= DMUB_FW_VERSION(4, 0, 0) &&
4734e045f49d9b Alex Hung 2026-04-27 315 adev->dm.dmcub_fw_version < DMUB_FW_VERSION(8, 0, 16))
4734e045f49d9b Alex Hung 2026-04-27 316 adev->dm.dc->debug.sanity_checks = true;
4734e045f49d9b Alex Hung 2026-04-27 317 break;
4734e045f49d9b Alex Hung 2026-04-27 318 default:
4734e045f49d9b Alex Hung 2026-04-27 319 break;
4734e045f49d9b Alex Hung 2026-04-27 320 }
4734e045f49d9b Alex Hung 2026-04-27 321
4734e045f49d9b Alex Hung 2026-04-27 322 return 0;
4734e045f49d9b Alex Hung 2026-04-27 323 }
829e9b68eaf2f5 Alex Hung 2026-04-29 324 EXPORT_IF_KUNIT(dm_dmub_hw_init);
4734e045f49d9b Alex Hung 2026-04-27 325
:::::: The code at line 191 was first introduced by commit
:::::: 4734e045f49d9bb801b4a3eef30d6ca7fba44280 drm/amd/display: Extract DMUB code to amdgpu_dm_dmub
:::::: TO: Alex Hung <alex.hung@xxxxxxx>
:::::: CC: Alex Deucher <alexander.deucher@xxxxxxx>
--
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https://github.com/intel/lkp-tests/wiki