tree: git://people.freedesktop.org/~agd5f/linux.git drm-next head: fadef51a438279ca660dbce31c26e787d6680149 commit: e14661af4e9f48d5e4380bfb5497ee2e640c5508 [198/491] drm/amdkfd: Support Sienna_Cichlid KFD v4 config: x86_64-randconfig-s021-20200623 (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-dirty git checkout e14661af4e9f48d5e4380bfb5497ee2e640c5508 # save the attached .config to linux build tree make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot lkp@intel.com

sparse warnings: (new ones prefixed by >>)

...

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10_3.c:268:17: sparse: sparse: cast removes address space 'asn:1' of expression

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10_3.c:270:17: sparse: sparse: cast removes address space 'asn:1' of expression

vim +268 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10_3.c

192 193 static int hqd_load_v10_3(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id, 194 uint32_t queue_id, uint32_t __user *wptr, 195 uint32_t wptr_shift, uint32_t wptr_mask, 196 struct mm_struct *mm) 197 { 198 struct amdgpu_device *adev = get_amdgpu_device(kgd); 199 struct v10_compute_mqd *m; 200 uint32_t *mqd_hqd; 201 uint32_t reg, hqd_base, data; 202 203 m = get_mqd(mqd); 204 205 pr_debug("Load hqd of pipe %d queue %d\n", pipe_id, queue_id); 206 acquire_queue(kgd, pipe_id, queue_id); 207 208 /* HIQ is set during driver init period with vmid set to 0*/ 209 if (m->cp_hqd_vmid == 0) { 210 uint32_t value, mec, pipe; 211 212 mec = (pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1; 213 pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec); 214 215 pr_debug("kfd: set HIQ, mec:%d, pipe:%d, queue:%d.\n", 216 mec, pipe, queue_id); 217 value = RREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_CP_SCHEDULERS)); 218 value = REG_SET_FIELD(value, RLC_CP_SCHEDULERS, scheduler1, 219 ((mec << 5) | (pipe << 3) | queue_id | 0x80)); 220 WREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_CP_SCHEDULERS), value); 221 } 222 223 /* HQD registers extend from CP_MQD_BASE_ADDR to CP_HQD_EOP_WPTR_MEM. */ 224 mqd_hqd = &m->cp_mqd_base_addr_lo; 225 hqd_base = SOC15_REG_OFFSET(GC, 0, mmCP_MQD_BASE_ADDR); 226 227 for (reg = hqd_base; 228 reg <= SOC15_REG_OFFSET(GC, 0, mmCP_HQD_PQ_WPTR_HI); reg++) 229 WREG32(reg, mqd_hqd[reg - hqd_base]); 230 231 232 /* Activate doorbell logic before triggering WPTR poll. */ 233 data = REG_SET_FIELD(m->cp_hqd_pq_doorbell_control, 234 CP_HQD_PQ_DOORBELL_CONTROL, DOORBELL_EN, 1); 235 WREG32(SOC15_REG_OFFSET(GC, 0, mmCP_HQD_PQ_DOORBELL_CONTROL), data); 236 237 if (wptr) { 238 /* Don't read wptr with get_user because the user 239 * context may not be accessible (if this function 240 * runs in a work queue). Instead trigger a one-shot 241 * polling read from memory in the CP. This assumes 242 * that wptr is GPU-accessible in the queue's VMID via 243 * ATC or SVM. WPTR==RPTR before starting the poll so 244 * the CP starts fetching new commands from the right 245 * place. 246 * 247 * Guessing a 64-bit WPTR from a 32-bit RPTR is a bit 248 * tricky. Assume that the queue didn't overflow. The 249 * number of valid bits in the 32-bit RPTR depends on 250 * the queue size. The remaining bits are taken from 251 * the saved 64-bit WPTR. If the WPTR wrapped, add the 252 * queue size. 253 */ 254 uint32_t queue_size = 255 2 << REG_GET_FIELD(m->cp_hqd_pq_control, 256 CP_HQD_PQ_CONTROL, QUEUE_SIZE); 257 uint64_t guessed_wptr = m->cp_hqd_pq_rptr & (queue_size - 1); 258 259 if ((m->cp_hqd_pq_wptr_lo & (queue_size - 1)) < guessed_wptr) 260 guessed_wptr += queue_size; 261 guessed_wptr += m->cp_hqd_pq_wptr_lo & ~(queue_size - 1); 262 guessed_wptr += (uint64_t)m->cp_hqd_pq_wptr_hi << 32; 263 264 WREG32(SOC15_REG_OFFSET(GC, 0, mmCP_HQD_PQ_WPTR_LO), 265 lower_32_bits(guessed_wptr)); 266 WREG32(SOC15_REG_OFFSET(GC, 0, mmCP_HQD_PQ_WPTR_HI), 267 upper_32_bits(guessed_wptr));

268 WREG32(SOC15_REG_OFFSET(GC, 0, mmCP_HQD_PQ_WPTR_POLL_ADDR),

269 lower_32_bits((uint64_t)wptr)); 270 WREG32(SOC15_REG_OFFSET(GC, 0, mmCP_HQD_PQ_WPTR_POLL_ADDR_HI), 271 upper_32_bits((uint64_t)wptr)); 272 pr_debug("%s setting CP_PQ_WPTR_POLL_CNTL1 to %x\n", __func__, 273 (uint32_t)get_queue_mask(adev, pipe_id, queue_id)); 274 WREG32(SOC15_REG_OFFSET(GC, 0, mmCP_PQ_WPTR_POLL_CNTL1), 275 (uint32_t)get_queue_mask(adev, pipe_id, queue_id)); 276 } 277 278 /* Start the EOP fetcher */ 279 WREG32(SOC15_REG_OFFSET(GC, 0, mmCP_HQD_EOP_RPTR), 280 REG_SET_FIELD(m->cp_hqd_eop_rptr, 281 CP_HQD_EOP_RPTR, INIT_FETCHER, 1)); 282 283 data = REG_SET_FIELD(m->cp_hqd_active, CP_HQD_ACTIVE, ACTIVE, 1); 284 WREG32(SOC15_REG_OFFSET(GC, 0, mmCP_HQD_ACTIVE), data); 285 286 release_queue(kgd); 287 288 return 0; 289 } 290

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