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Date: Sat, 10 Jun 2023 08:02:40 +0800
From: kernel test robot <lkp@...el.com>
To: Leo Liu <leo.liu@....com>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
linux-kernel@...r.kernel.org,
Alex Deucher <alexander.deucher@....com>,
James Zhu <James.Zhu@....com>
Subject: drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c:1303:12: warning: stack frame
size (3536) exceeds limit (2048) in 'vcn_v4_0_stop'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 64569520920a3ca5d456ddd9f4f95fc6ea9b8b45
commit: 8da1170a16e4d4b49fa07d1f75ad480847ff7eca drm/amdgpu: add VCN4 ip block support
date: 1 year, 1 month ago
config: riscv-randconfig-r012-20230608 (https://download.01.org/0day-ci/archive/20230610/202306100755.2Kmzf3xm-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build):
mkdir -p ~/bin
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8da1170a16e4d4b49fa07d1f75ad480847ff7eca
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 8da1170a16e4d4b49fa07d1f75ad480847ff7eca
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=riscv olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/gpu/drm/ lib/
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
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306100755.2Kmzf3xm-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c:1303:12: warning: stack frame size (3536) exceeds limit (2048) in 'vcn_v4_0_stop' [-Wframe-larger-than]
static int vcn_v4_0_stop(struct amdgpu_device *adev)
^
>> drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c:1057:12: warning: stack frame size (8896) exceeds limit (2048) in 'vcn_v4_0_start' [-Wframe-larger-than]
static int vcn_v4_0_start(struct amdgpu_device *adev)
^
drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c:887:12: warning: stack frame size (3056) exceeds limit (2048) in 'vcn_v4_0_start_dpg_mode' [-Wframe-larger-than]
static int vcn_v4_0_start_dpg_mode(struct amdgpu_device *adev, int inst_idx, bool indirect)
^
3 warnings generated.
vim +/vcn_v4_0_stop +1303 drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
1295
1296 /**
1297 * vcn_v4_0_stop - VCN stop
1298 *
1299 * @adev: amdgpu_device pointer
1300 *
1301 * Stop VCN block
1302 */
> 1303 static int vcn_v4_0_stop(struct amdgpu_device *adev)
1304 {
1305 uint32_t tmp;
1306 int i, r = 0;
1307
1308 for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
1309 if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG) {
1310 r = vcn_v4_0_stop_dpg_mode(adev, i);
1311 continue;
1312 }
1313
1314 /* wait for vcn idle */
1315 r = SOC15_WAIT_ON_RREG(VCN, i, regUVD_STATUS, UVD_STATUS__IDLE, 0x7);
1316 if (r)
1317 return r;
1318
1319 tmp = UVD_LMI_STATUS__VCPU_LMI_WRITE_CLEAN_MASK |
1320 UVD_LMI_STATUS__READ_CLEAN_MASK |
1321 UVD_LMI_STATUS__WRITE_CLEAN_MASK |
1322 UVD_LMI_STATUS__WRITE_CLEAN_RAW_MASK;
1323 r = SOC15_WAIT_ON_RREG(VCN, i, regUVD_LMI_STATUS, tmp, tmp);
1324 if (r)
1325 return r;
1326
1327 /* disable LMI UMC channel */
1328 tmp = RREG32_SOC15(VCN, i, regUVD_LMI_CTRL2);
1329 tmp |= UVD_LMI_CTRL2__STALL_ARB_UMC_MASK;
1330 WREG32_SOC15(VCN, i, regUVD_LMI_CTRL2, tmp);
1331 tmp = UVD_LMI_STATUS__UMC_READ_CLEAN_RAW_MASK |
1332 UVD_LMI_STATUS__UMC_WRITE_CLEAN_RAW_MASK;
1333 r = SOC15_WAIT_ON_RREG(VCN, i, regUVD_LMI_STATUS, tmp, tmp);
1334 if (r)
1335 return r;
1336
1337 /* block VCPU register access */
1338 WREG32_P(SOC15_REG_OFFSET(VCN, i, regUVD_RB_ARB_CTRL),
1339 UVD_RB_ARB_CTRL__VCPU_DIS_MASK,
1340 ~UVD_RB_ARB_CTRL__VCPU_DIS_MASK);
1341
1342 /* reset VCPU */
1343 WREG32_P(SOC15_REG_OFFSET(VCN, i, regUVD_VCPU_CNTL),
1344 UVD_VCPU_CNTL__BLK_RST_MASK,
1345 ~UVD_VCPU_CNTL__BLK_RST_MASK);
1346
1347 /* disable VCPU clock */
1348 WREG32_P(SOC15_REG_OFFSET(VCN, i, regUVD_VCPU_CNTL), 0,
1349 ~(UVD_VCPU_CNTL__CLK_EN_MASK));
1350
1351 /* apply soft reset */
1352 tmp = RREG32_SOC15(VCN, i, regUVD_SOFT_RESET);
1353 tmp |= UVD_SOFT_RESET__LMI_UMC_SOFT_RESET_MASK;
1354 WREG32_SOC15(VCN, i, regUVD_SOFT_RESET, tmp);
1355 tmp = RREG32_SOC15(VCN, i, regUVD_SOFT_RESET);
1356 tmp |= UVD_SOFT_RESET__LMI_SOFT_RESET_MASK;
1357 WREG32_SOC15(VCN, i, regUVD_SOFT_RESET, tmp);
1358
1359 /* clear status */
1360 WREG32_SOC15(VCN, i, regUVD_STATUS, 0);
1361
1362 /* apply HW clock gating */
1363 vcn_v4_0_enable_clock_gating(adev, i);
1364
1365 /* enable VCN power gating */
1366 vcn_v4_0_enable_static_power_gating(adev, i);
1367 }
1368
1369 if (adev->pm.dpm_enabled)
1370 amdgpu_dpm_enable_uvd(adev, false);
1371
1372 return 0;
1373 }
1374
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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