The SOC15_REG_OFFSET() macro needs to dereference adev->reg_offset[IP]
pointer, which is NULL when there are fewer than 8 sdma engines. Avoid
that by not initializing the array regardless.
Change-Id: Iabae9bff7546b344720905d5d4a5cfc066a79d25
Signed-off-by: Yong Zhao <yong.z...@amd.com>
---
.../drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c | 65 ++++++++++++-------
1 file changed, 43 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c
index 3c119407dc34..2b26925623eb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c
@@ -71,32 +71,53 @@ static uint32_t get_sdma_rlc_reg_offset(struct
amdgpu_device *adev,
unsigned int engine_id,
unsigned int queue_id)
{
- uint32_t sdma_engine_reg_base[8] = {
- SOC15_REG_OFFSET(SDMA0, 0,
- mmSDMA0_RLC0_RB_CNTL) - mmSDMA0_RLC0_RB_CNTL,
- SOC15_REG_OFFSET(SDMA1, 0,
- mmSDMA1_RLC0_RB_CNTL) - mmSDMA1_RLC0_RB_CNTL,
- SOC15_REG_OFFSET(SDMA2, 0,
- mmSDMA2_RLC0_RB_CNTL) - mmSDMA2_RLC0_RB_CNTL,
- SOC15_REG_OFFSET(SDMA3, 0,
- mmSDMA3_RLC0_RB_CNTL) - mmSDMA3_RLC0_RB_CNTL,
- SOC15_REG_OFFSET(SDMA4, 0,
- mmSDMA4_RLC0_RB_CNTL) - mmSDMA4_RLC0_RB_CNTL,
- SOC15_REG_OFFSET(SDMA5, 0,
- mmSDMA5_RLC0_RB_CNTL) - mmSDMA5_RLC0_RB_CNTL,
- SOC15_REG_OFFSET(SDMA6, 0,
- mmSDMA6_RLC0_RB_CNTL) - mmSDMA6_RLC0_RB_CNTL,
- SOC15_REG_OFFSET(SDMA7, 0,
- mmSDMA7_RLC0_RB_CNTL) - mmSDMA7_RLC0_RB_CNTL
- };
-
- uint32_t retval = sdma_engine_reg_base[engine_id]
+ uint32_t sdma_engine_reg_base;
+ uint32_t sdma_rlc_reg_offset;
+
+ switch (engine_id) {
+ case 0:
+ sdma_engine_reg_base = SOC15_REG_OFFSET(SDMA0, 0,
+ mmSDMA0_RLC0_RB_CNTL) - mmSDMA0_RLC0_RB_CNTL;
+ break;
+ case 1:
+ sdma_engine_reg_base = SOC15_REG_OFFSET(SDMA1, 0,
+ mmSDMA1_RLC0_RB_CNTL) - mmSDMA1_RLC0_RB_CNTL;
+ break;
+ case 2:
+ sdma_engine_reg_base = SOC15_REG_OFFSET(SDMA2, 0,
+ mmSDMA2_RLC0_RB_CNTL) - mmSDMA2_RLC0_RB_CNTL;
+ break;
+ case 3:
+ sdma_engine_reg_base = SOC15_REG_OFFSET(SDMA3, 0,
+ mmSDMA3_RLC0_RB_CNTL) - mmSDMA3_RLC0_RB_CNTL;
+ break;
+ case 4:
+ sdma_engine_reg_base = SOC15_REG_OFFSET(SDMA4, 0,
+ mmSDMA4_RLC0_RB_CNTL) - mmSDMA4_RLC0_RB_CNTL;
+ break;
+ case 5:
+ sdma_engine_reg_base = SOC15_REG_OFFSET(SDMA5, 0,
+ mmSDMA5_RLC0_RB_CNTL) - mmSDMA5_RLC0_RB_CNTL;
+ break;
+ case 6:
+ sdma_engine_reg_base = SOC15_REG_OFFSET(SDMA6, 0,
+ mmSDMA6_RLC0_RB_CNTL) - mmSDMA6_RLC0_RB_CNTL;
+ break;
+ case 7:
+ sdma_engine_reg_base = SOC15_REG_OFFSET(SDMA7, 0,
+ mmSDMA7_RLC0_RB_CNTL) - mmSDMA7_RLC0_RB_CNTL;
+ break;
+ default:
+ break;
+ }
+
+ sdma_rlc_reg_offset = sdma_engine_reg_base
+ queue_id * (mmSDMA0_RLC1_RB_CNTL - mmSDMA0_RLC0_RB_CNTL);
pr_debug("RLC register offset for SDMA%d RLC%d: 0x%x\n", engine_id,
- queue_id, retval);
+ queue_id, sdma_rlc_reg_offset);
- return retval;
+ return sdma_rlc_reg_offset;
}
static int kgd_hqd_sdma_load(struct kgd_dev *kgd, void *mqd,
--
2.17.1
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