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drm/amdgpu: fix sdma v4 startup under SRIOV

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Under SRIOV we were enabling the ring buffer before it was initialized.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2018-09-26 19:56:41 +02:00 committed by Alex Deucher
parent 105f20706f
commit 51235849d9
1 changed files with 124 additions and 126 deletions
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250
drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
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@ -675,13 +675,14 @@ static void sdma_v4_0_enable(struct amdgpu_device *adev, bool enable)
* sdma_v4_0_gfx_resume - setup and start the async dma engines
*
* @adev: amdgpu_device pointer
* @i: instance to resume
*
* Set up the gfx DMA ring buffers and enable them (VEGA10).
* Returns 0 for success, error for failure.
*/
static int sdma_v4_0_gfx_resume(struct amdgpu_device *adev)
static void sdma_v4_0_gfx_resume(struct amdgpu_device *adev, unsigned int i)
{
struct amdgpu_ring *ring;
struct amdgpu_ring *ring = &adev->sdma.instance[i].ring;
u32 rb_cntl, ib_cntl, wptr_poll_cntl;
u32 rb_bufsz;
u32 wb_offset;
@ -689,129 +690,108 @@ static int sdma_v4_0_gfx_resume(struct amdgpu_device *adev)
u32 doorbell_offset;
u32 temp;
u64 wptr_gpu_addr;
int i, r;
for (i = 0; i < adev->sdma.num_instances; i++) {
ring = &adev->sdma.instance[i].ring;
wb_offset = (ring->rptr_offs * 4);
wb_offset = (ring->rptr_offs * 4);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_SEM_WAIT_FAIL_TIMER_CNTL), 0);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_SEM_WAIT_FAIL_TIMER_CNTL), 0);
/* Set ring buffer size in dwords */
rb_bufsz = order_base_2(ring->ring_size / 4);
rb_cntl = RREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_CNTL));
rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_GFX_RB_CNTL, RB_SIZE, rb_bufsz);
/* Set ring buffer size in dwords */
rb_bufsz = order_base_2(ring->ring_size / 4);
rb_cntl = RREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_CNTL));
rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_GFX_RB_CNTL, RB_SIZE, rb_bufsz);
#ifdef __BIG_ENDIAN
rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_GFX_RB_CNTL, RB_SWAP_ENABLE, 1);
rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_GFX_RB_CNTL,
RPTR_WRITEBACK_SWAP_ENABLE, 1);
rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_GFX_RB_CNTL, RB_SWAP_ENABLE, 1);
rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_GFX_RB_CNTL,
RPTR_WRITEBACK_SWAP_ENABLE, 1);
#endif
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_CNTL), rb_cntl);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_CNTL), rb_cntl);
/* Initialize the ring buffer's read and write pointers */
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_RPTR), 0);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_RPTR_HI), 0);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_WPTR), 0);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_WPTR_HI), 0);
/* Initialize the ring buffer's read and write pointers */
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_RPTR), 0);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_RPTR_HI), 0);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_WPTR), 0);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_WPTR_HI), 0);
/* set the wb address whether it's enabled or not */
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_RPTR_ADDR_HI),
upper_32_bits(adev->wb.gpu_addr + wb_offset) & 0xFFFFFFFF);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_RPTR_ADDR_LO),
lower_32_bits(adev->wb.gpu_addr + wb_offset) & 0xFFFFFFFC);
/* set the wb address whether it's enabled or not */
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_RPTR_ADDR_HI),
upper_32_bits(adev->wb.gpu_addr + wb_offset) & 0xFFFFFFFF);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_RPTR_ADDR_LO),
lower_32_bits(adev->wb.gpu_addr + wb_offset) & 0xFFFFFFFC);
rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_GFX_RB_CNTL, RPTR_WRITEBACK_ENABLE, 1);
rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_GFX_RB_CNTL, RPTR_WRITEBACK_ENABLE, 1);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_BASE), ring->gpu_addr >> 8);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_BASE_HI), ring->gpu_addr >> 40);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_BASE), ring->gpu_addr >> 8);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_BASE_HI), ring->gpu_addr >> 40);
ring->wptr = 0;
ring->wptr = 0;
/* before programing wptr to a less value, need set minor_ptr_update first */
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_MINOR_PTR_UPDATE), 1);
if (!amdgpu_sriov_vf(adev)) { /* only bare-metal use register write for wptr */
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_WPTR), lower_32_bits(ring->wptr) << 2);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_WPTR_HI), upper_32_bits(ring->wptr) << 2);
}
doorbell = RREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_DOORBELL));
doorbell_offset = RREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_DOORBELL_OFFSET));
if (ring->use_doorbell) {
doorbell = REG_SET_FIELD(doorbell, SDMA0_GFX_DOORBELL, ENABLE, 1);
doorbell_offset = REG_SET_FIELD(doorbell_offset, SDMA0_GFX_DOORBELL_OFFSET,
OFFSET, ring->doorbell_index);
} else {
doorbell = REG_SET_FIELD(doorbell, SDMA0_GFX_DOORBELL, ENABLE, 0);
}
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_DOORBELL), doorbell);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_DOORBELL_OFFSET), doorbell_offset);
adev->nbio_funcs->sdma_doorbell_range(adev, i, ring->use_doorbell,
ring->doorbell_index);
if (amdgpu_sriov_vf(adev))
sdma_v4_0_ring_set_wptr(ring);
/* set minor_ptr_update to 0 after wptr programed */
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_MINOR_PTR_UPDATE), 0);
/* set utc l1 enable flag always to 1 */
temp = RREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_CNTL));
temp = REG_SET_FIELD(temp, SDMA0_CNTL, UTC_L1_ENABLE, 1);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_CNTL), temp);
if (!amdgpu_sriov_vf(adev)) {
/* unhalt engine */
temp = RREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_F32_CNTL));
temp = REG_SET_FIELD(temp, SDMA0_F32_CNTL, HALT, 0);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_F32_CNTL), temp);
}
/* setup the wptr shadow polling */
wptr_gpu_addr = adev->wb.gpu_addr + (ring->wptr_offs * 4);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_WPTR_POLL_ADDR_LO),
lower_32_bits(wptr_gpu_addr));
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_WPTR_POLL_ADDR_HI),
upper_32_bits(wptr_gpu_addr));
wptr_poll_cntl = RREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_WPTR_POLL_CNTL));
if (amdgpu_sriov_vf(adev))
wptr_poll_cntl = REG_SET_FIELD(wptr_poll_cntl, SDMA0_GFX_RB_WPTR_POLL_CNTL, F32_POLL_ENABLE, 1);
else
wptr_poll_cntl = REG_SET_FIELD(wptr_poll_cntl, SDMA0_GFX_RB_WPTR_POLL_CNTL, F32_POLL_ENABLE, 0);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_WPTR_POLL_CNTL), wptr_poll_cntl);
/* enable DMA RB */
rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_GFX_RB_CNTL, RB_ENABLE, 1);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_CNTL), rb_cntl);
ib_cntl = RREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_IB_CNTL));
ib_cntl = REG_SET_FIELD(ib_cntl, SDMA0_GFX_IB_CNTL, IB_ENABLE, 1);
#ifdef __BIG_ENDIAN
ib_cntl = REG_SET_FIELD(ib_cntl, SDMA0_GFX_IB_CNTL, IB_SWAP_ENABLE, 1);
#endif
/* enable DMA IBs */
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_IB_CNTL), ib_cntl);
ring->ready = true;
if (amdgpu_sriov_vf(adev)) { /* bare-metal sequence doesn't need below to lines */
sdma_v4_0_ctx_switch_enable(adev, true);
sdma_v4_0_enable(adev, true);
}
r = amdgpu_ring_test_ring(ring);
if (r) {
ring->ready = false;
return r;
}
if (adev->mman.buffer_funcs_ring == ring)
amdgpu_ttm_set_buffer_funcs_status(adev, true);
/* before programing wptr to a less value, need set minor_ptr_update first */
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_MINOR_PTR_UPDATE), 1);
if (!amdgpu_sriov_vf(adev)) { /* only bare-metal use register write for wptr */
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_WPTR), lower_32_bits(ring->wptr) << 2);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_WPTR_HI), upper_32_bits(ring->wptr) << 2);
}
return 0;
doorbell = RREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_DOORBELL));
doorbell_offset = RREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_DOORBELL_OFFSET));
if (ring->use_doorbell) {
doorbell = REG_SET_FIELD(doorbell, SDMA0_GFX_DOORBELL, ENABLE, 1);
doorbell_offset = REG_SET_FIELD(doorbell_offset, SDMA0_GFX_DOORBELL_OFFSET,
OFFSET, ring->doorbell_index);
} else {
doorbell = REG_SET_FIELD(doorbell, SDMA0_GFX_DOORBELL, ENABLE, 0);
}
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_DOORBELL), doorbell);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_DOORBELL_OFFSET), doorbell_offset);
adev->nbio_funcs->sdma_doorbell_range(adev, i, ring->use_doorbell,
ring->doorbell_index);
if (amdgpu_sriov_vf(adev))
sdma_v4_0_ring_set_wptr(ring);
/* set minor_ptr_update to 0 after wptr programed */
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_MINOR_PTR_UPDATE), 0);
/* set utc l1 enable flag always to 1 */
temp = RREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_CNTL));
temp = REG_SET_FIELD(temp, SDMA0_CNTL, UTC_L1_ENABLE, 1);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_CNTL), temp);
if (!amdgpu_sriov_vf(adev)) {
/* unhalt engine */
temp = RREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_F32_CNTL));
temp = REG_SET_FIELD(temp, SDMA0_F32_CNTL, HALT, 0);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_F32_CNTL), temp);
}
/* setup the wptr shadow polling */
wptr_gpu_addr = adev->wb.gpu_addr + (ring->wptr_offs * 4);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_WPTR_POLL_ADDR_LO),
lower_32_bits(wptr_gpu_addr));
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_WPTR_POLL_ADDR_HI),
upper_32_bits(wptr_gpu_addr));
wptr_poll_cntl = RREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_WPTR_POLL_CNTL));
if (amdgpu_sriov_vf(adev))
wptr_poll_cntl = REG_SET_FIELD(wptr_poll_cntl, SDMA0_GFX_RB_WPTR_POLL_CNTL, F32_POLL_ENABLE, 1);
else
wptr_poll_cntl = REG_SET_FIELD(wptr_poll_cntl, SDMA0_GFX_RB_WPTR_POLL_CNTL, F32_POLL_ENABLE, 0);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_WPTR_POLL_CNTL), wptr_poll_cntl);
/* enable DMA RB */
rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_GFX_RB_CNTL, RB_ENABLE, 1);
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_RB_CNTL), rb_cntl);
ib_cntl = RREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_IB_CNTL));
ib_cntl = REG_SET_FIELD(ib_cntl, SDMA0_GFX_IB_CNTL, IB_ENABLE, 1);
#ifdef __BIG_ENDIAN
ib_cntl = REG_SET_FIELD(ib_cntl, SDMA0_GFX_IB_CNTL, IB_SWAP_ENABLE, 1);
#endif
/* enable DMA IBs */
WREG32(sdma_v4_0_get_reg_offset(adev, i, mmSDMA0_GFX_IB_CNTL), ib_cntl);
ring->ready = true;
}
static void
@ -943,33 +923,51 @@ static int sdma_v4_0_load_microcode(struct amdgpu_device *adev)
*/
static int sdma_v4_0_start(struct amdgpu_device *adev)
{
int r = 0;
struct amdgpu_ring *ring;
int i, r;
if (amdgpu_sriov_vf(adev)) {
sdma_v4_0_ctx_switch_enable(adev, false);
sdma_v4_0_enable(adev, false);
} else {
/* set RB registers */
r = sdma_v4_0_gfx_resume(adev);
return r;
if (adev->firmware.load_type != AMDGPU_FW_LOAD_PSP) {
r = sdma_v4_0_load_microcode(adev);
if (r)
return r;
}
/* unhalt the MEs */
sdma_v4_0_enable(adev, true);
/* enable sdma ring preemption */
sdma_v4_0_ctx_switch_enable(adev, true);
}
if (adev->firmware.load_type != AMDGPU_FW_LOAD_PSP) {
r = sdma_v4_0_load_microcode(adev);
/* start the gfx rings and rlc compute queues */
for (i = 0; i < adev->sdma.num_instances; i++)
sdma_v4_0_gfx_resume(adev, i);
if (amdgpu_sriov_vf(adev)) {
sdma_v4_0_ctx_switch_enable(adev, true);
sdma_v4_0_enable(adev, true);
} else {
r = sdma_v4_0_rlc_resume(adev);
if (r)
return r;
}
/* unhalt the MEs */
sdma_v4_0_enable(adev, true);
/* enable sdma ring preemption */
sdma_v4_0_ctx_switch_enable(adev, true);
for (i = 0; i < adev->sdma.num_instances; i++) {
ring = &adev->sdma.instance[i].ring;
/* start the gfx rings and rlc compute queues */
r = sdma_v4_0_gfx_resume(adev);
if (r)
return r;
r = sdma_v4_0_rlc_resume(adev);
r = amdgpu_ring_test_ring(ring);
if (r) {
ring->ready = false;
return r;
}
if (adev->mman.buffer_funcs_ring == ring)
amdgpu_ttm_set_buffer_funcs_status(adev, true);
}
return r;
}