From: Alex Deucher alexander.deucher@amd.com
CIK has new asynchronous DMA engines called sDMA (system DMA). Each engine supports 1 ring buffer for kernel and gfx and 2 userspace queues for compute.
TODO: fill in the compute setup.
v2: update to the latest reset code v3: remove ib_parse v4: fix copy_dma() v5: drop WIP compute sDMA queues v6: rebase v7: endian fixes for IB v8: cleanup for release
Signed-off-by: Alex Deucher alexander.deucher@amd.com --- drivers/gpu/drm/radeon/cik.c | 745 ++++++++++++++++++++++++++++++++++++++- drivers/gpu/drm/radeon/cikd.h | 130 +++++++ drivers/gpu/drm/radeon/radeon.h | 1 + 3 files changed, 870 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c index b70f017..931169e 100644 --- a/drivers/gpu/drm/radeon/cik.c +++ b/drivers/gpu/drm/radeon/cik.c @@ -44,6 +44,9 @@ #define KV_RLC_UCODE_SIZE 2560 /* gddr controller */ #define CIK_MC_UCODE_SIZE 7866 +/* sdma */ +#define CIK_SDMA_UCODE_SIZE 1050 +#define CIK_SDMA_UCODE_VERSION 64
MODULE_FIRMWARE("radeon/BONAIRE_pfp.bin"); MODULE_FIRMWARE("radeon/BONAIRE_me.bin"); @@ -51,16 +54,19 @@ MODULE_FIRMWARE("radeon/BONAIRE_ce.bin"); MODULE_FIRMWARE("radeon/BONAIRE_mec.bin"); MODULE_FIRMWARE("radeon/BONAIRE_mc.bin"); MODULE_FIRMWARE("radeon/BONAIRE_rlc.bin"); +MODULE_FIRMWARE("radeon/BONAIRE_sdma.bin"); MODULE_FIRMWARE("radeon/KAVERI_pfp.bin"); MODULE_FIRMWARE("radeon/KAVERI_me.bin"); MODULE_FIRMWARE("radeon/KAVERI_ce.bin"); MODULE_FIRMWARE("radeon/KAVERI_mec.bin"); MODULE_FIRMWARE("radeon/KAVERI_rlc.bin"); +MODULE_FIRMWARE("radeon/KAVERI_sdma.bin"); MODULE_FIRMWARE("radeon/KABINI_pfp.bin"); MODULE_FIRMWARE("radeon/KABINI_me.bin"); MODULE_FIRMWARE("radeon/KABINI_ce.bin"); MODULE_FIRMWARE("radeon/KABINI_mec.bin"); MODULE_FIRMWARE("radeon/KABINI_rlc.bin"); +MODULE_FIRMWARE("radeon/KABINI_sdma.bin");
extern int r600_ih_ring_alloc(struct radeon_device *rdev); extern void r600_ih_ring_fini(struct radeon_device *rdev); @@ -198,7 +204,8 @@ static int cik_init_microcode(struct radeon_device *rdev) struct platform_device *pdev; const char *chip_name; size_t pfp_req_size, me_req_size, ce_req_size, - mec_req_size, rlc_req_size, mc_req_size; + mec_req_size, rlc_req_size, mc_req_size, + sdma_req_size; char fw_name[30]; int err;
@@ -220,6 +227,7 @@ static int cik_init_microcode(struct radeon_device *rdev) mec_req_size = CIK_MEC_UCODE_SIZE * 4; rlc_req_size = BONAIRE_RLC_UCODE_SIZE * 4; mc_req_size = CIK_MC_UCODE_SIZE * 4; + sdma_req_size = CIK_SDMA_UCODE_SIZE * 4; break; case CHIP_KAVERI: chip_name = "KAVERI"; @@ -228,6 +236,7 @@ static int cik_init_microcode(struct radeon_device *rdev) ce_req_size = CIK_CE_UCODE_SIZE * 4; mec_req_size = CIK_MEC_UCODE_SIZE * 4; rlc_req_size = KV_RLC_UCODE_SIZE * 4; + sdma_req_size = CIK_SDMA_UCODE_SIZE * 4; break; case CHIP_KABINI: chip_name = "KABINI"; @@ -236,6 +245,7 @@ static int cik_init_microcode(struct radeon_device *rdev) ce_req_size = CIK_CE_UCODE_SIZE * 4; mec_req_size = CIK_MEC_UCODE_SIZE * 4; rlc_req_size = KB_RLC_UCODE_SIZE * 4; + sdma_req_size = CIK_SDMA_UCODE_SIZE * 4; break; default: BUG(); } @@ -298,6 +308,17 @@ static int cik_init_microcode(struct radeon_device *rdev) err = -EINVAL; }
+ snprintf(fw_name, sizeof(fw_name), "radeon/%s_sdma.bin", chip_name); + err = request_firmware(&rdev->sdma_fw, fw_name, &pdev->dev); + if (err) + goto out; + if (rdev->sdma_fw->size != sdma_req_size) { + printk(KERN_ERR + "cik_sdma: Bogus length %zu in firmware "%s"\n", + rdev->sdma_fw->size, fw_name); + err = -EINVAL; + } + /* No MC ucode on APUs */ if (!(rdev->flags & RADEON_IS_IGP)) { snprintf(fw_name, sizeof(fw_name), "radeon/%s_mc.bin", chip_name); @@ -1425,6 +1446,8 @@ static void cik_gpu_init(struct radeon_device *rdev) WREG32(GB_ADDR_CONFIG, gb_addr_config); WREG32(HDP_ADDR_CONFIG, gb_addr_config); WREG32(DMIF_ADDR_CALC, gb_addr_config); + WREG32(SDMA0_TILING_CONFIG + SDMA0_REGISTER_OFFSET, gb_addr_config & 0x70); + WREG32(SDMA0_TILING_CONFIG + SDMA1_REGISTER_OFFSET, gb_addr_config & 0x70);
cik_tiling_mode_table_init(rdev);
@@ -2136,6 +2159,578 @@ static int cik_cp_resume(struct radeon_device *rdev) return 0; }
+/* + * sDMA - System DMA + * Starting with CIK, the GPU has new asynchronous + * DMA engines. These engines are used for compute + * and gfx. There are two DMA engines (SDMA0, SDMA1) + * and each one supports 1 ring buffer used for gfx + * and 2 queues used for compute. + * + * The programming model is very similar to the CP + * (ring buffer, IBs, etc.), but sDMA has it's own + * packet format that is different from the PM4 format + * used by the CP. sDMA supports copying data, writing + * embedded data, solid fills, and a number of other + * things. It also has support for tiling/detiling of + * buffers. + */ +/** + * cik_sdma_ring_ib_execute - Schedule an IB on the DMA engine + * + * @rdev: radeon_device pointer + * @ib: IB object to schedule + * + * Schedule an IB in the DMA ring (CIK). + */ +void cik_sdma_ring_ib_execute(struct radeon_device *rdev, + struct radeon_ib *ib) +{ + struct radeon_ring *ring = &rdev->ring[ib->ring]; + u32 extra_bits = (ib->vm ? ib->vm->id : 0) & 0xf; + + if (rdev->wb.enabled) { + u32 next_rptr = ring->wptr + 5; + while ((next_rptr & 7) != 4) + next_rptr++; + next_rptr += 4; + radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0)); + radeon_ring_write(ring, ring->next_rptr_gpu_addr & 0xfffffffc); + radeon_ring_write(ring, upper_32_bits(ring->next_rptr_gpu_addr) & 0xffffffff); + radeon_ring_write(ring, 1); /* number of DWs to follow */ + radeon_ring_write(ring, next_rptr); + } + + /* IB packet must end on a 8 DW boundary */ + while ((ring->wptr & 7) != 4) + radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0)); + radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_INDIRECT_BUFFER, 0, extra_bits)); + radeon_ring_write(ring, ib->gpu_addr & 0xffffffe0); /* base must be 32 byte aligned */ + radeon_ring_write(ring, upper_32_bits(ib->gpu_addr) & 0xffffffff); + radeon_ring_write(ring, ib->length_dw); + +} + +/** + * cik_sdma_fence_ring_emit - emit a fence on the DMA ring + * + * @rdev: radeon_device pointer + * @fence: radeon fence object + * + * Add a DMA fence packet to the ring to write + * the fence seq number and DMA trap packet to generate + * an interrupt if needed (CIK). + */ +void cik_sdma_fence_ring_emit(struct radeon_device *rdev, + struct radeon_fence *fence) +{ + struct radeon_ring *ring = &rdev->ring[fence->ring]; + u64 addr = rdev->fence_drv[fence->ring].gpu_addr; + u32 extra_bits = (SDMA_POLL_REG_MEM_EXTRA_OP(1) | + SDMA_POLL_REG_MEM_EXTRA_FUNC(3)); /* == */ + u32 ref_and_mask; + + if (fence->ring == R600_RING_TYPE_DMA_INDEX) + ref_and_mask = SDMA0; + else + ref_and_mask = SDMA1; + + /* write the fence */ + radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_FENCE, 0, 0)); + radeon_ring_write(ring, addr & 0xffffffff); + radeon_ring_write(ring, upper_32_bits(addr) & 0xffffffff); + radeon_ring_write(ring, fence->seq); + /* generate an interrupt */ + radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_TRAP, 0, 0)); + /* flush HDP */ + radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0, extra_bits)); + radeon_ring_write(ring, GPU_HDP_FLUSH_DONE); + radeon_ring_write(ring, GPU_HDP_FLUSH_REQ); + radeon_ring_write(ring, ref_and_mask); /* REFERENCE */ + radeon_ring_write(ring, ref_and_mask); /* MASK */ + radeon_ring_write(ring, (4 << 16) | 10); /* RETRY_COUNT, POLL_INTERVAL */ +} + +/** + * cik_sdma_semaphore_ring_emit - emit a semaphore on the dma ring + * + * @rdev: radeon_device pointer + * @ring: radeon_ring structure holding ring information + * @semaphore: radeon semaphore object + * @emit_wait: wait or signal semaphore + * + * Add a DMA semaphore packet to the ring wait on or signal + * other rings (CIK). + */ +void cik_sdma_semaphore_ring_emit(struct radeon_device *rdev, + struct radeon_ring *ring, + struct radeon_semaphore *semaphore, + bool emit_wait) +{ + u64 addr = semaphore->gpu_addr; + u32 extra_bits = emit_wait ? 0 : SDMA_SEMAPHORE_EXTRA_S; + + radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SEMAPHORE, 0, extra_bits)); + radeon_ring_write(ring, addr & 0xfffffff8); + radeon_ring_write(ring, upper_32_bits(addr) & 0xffffffff); +} + +/** + * cik_sdma_gfx_stop - stop the gfx async dma engines + * + * @rdev: radeon_device pointer + * + * Stop the gfx async dma ring buffers (CIK). + */ +static void cik_sdma_gfx_stop(struct radeon_device *rdev) +{ + u32 rb_cntl, reg_offset; + int i; + + radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size); + + for (i = 0; i < 2; i++) { + if (i == 0) + reg_offset = SDMA0_REGISTER_OFFSET; + else + reg_offset = SDMA1_REGISTER_OFFSET; + rb_cntl = RREG32(SDMA0_GFX_RB_CNTL + reg_offset); + rb_cntl &= ~SDMA_RB_ENABLE; + WREG32(SDMA0_GFX_RB_CNTL + reg_offset, rb_cntl); + WREG32(SDMA0_GFX_IB_CNTL + reg_offset, 0); + } +} + +/** + * cik_sdma_rlc_stop - stop the compute async dma engines + * + * @rdev: radeon_device pointer + * + * Stop the compute async dma queues (CIK). + */ +static void cik_sdma_rlc_stop(struct radeon_device *rdev) +{ + /* XXX todo */ +} + +/** + * cik_sdma_enable - stop the async dma engines + * + * @rdev: radeon_device pointer + * @enable: enable/disable the DMA MEs. + * + * Halt or unhalt the async dma engines (CIK). + */ +static void cik_sdma_enable(struct radeon_device *rdev, bool enable) +{ + u32 me_cntl, reg_offset; + int i; + + for (i = 0; i < 2; i++) { + if (i == 0) + reg_offset = SDMA0_REGISTER_OFFSET; + else + reg_offset = SDMA1_REGISTER_OFFSET; + me_cntl = RREG32(SDMA0_ME_CNTL + reg_offset); + if (enable) + me_cntl &= ~SDMA_HALT; + else + me_cntl |= SDMA_HALT; + WREG32(SDMA0_ME_CNTL + reg_offset, me_cntl); + } +} + +/** + * cik_sdma_gfx_resume - setup and start the async dma engines + * + * @rdev: radeon_device pointer + * + * Set up the gfx DMA ring buffers and enable them (CIK). + * Returns 0 for success, error for failure. + */ +static int cik_sdma_gfx_resume(struct radeon_device *rdev) +{ + struct radeon_ring *ring; + u32 rb_cntl, ib_cntl; + u32 rb_bufsz; + u32 reg_offset, wb_offset; + int i, r; + + for (i = 0; i < 2; i++) { + if (i == 0) { + ring = &rdev->ring[R600_RING_TYPE_DMA_INDEX]; + reg_offset = SDMA0_REGISTER_OFFSET; + wb_offset = R600_WB_DMA_RPTR_OFFSET; + } else { + ring = &rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX]; + reg_offset = SDMA1_REGISTER_OFFSET; + wb_offset = CAYMAN_WB_DMA1_RPTR_OFFSET; + } + + WREG32(SDMA0_SEM_INCOMPLETE_TIMER_CNTL + reg_offset, 0); + WREG32(SDMA0_SEM_WAIT_FAIL_TIMER_CNTL + reg_offset, 0); + + /* Set ring buffer size in dwords */ + rb_bufsz = drm_order(ring->ring_size / 4); + rb_cntl = rb_bufsz << 1; +#ifdef __BIG_ENDIAN + rb_cntl |= SDMA_RB_SWAP_ENABLE | SDMA_RPTR_WRITEBACK_SWAP_ENABLE; +#endif + WREG32(SDMA0_GFX_RB_CNTL + reg_offset, rb_cntl); + + /* Initialize the ring buffer's read and write pointers */ + WREG32(SDMA0_GFX_RB_RPTR + reg_offset, 0); + WREG32(SDMA0_GFX_RB_WPTR + reg_offset, 0); + + /* set the wb address whether it's enabled or not */ + WREG32(SDMA0_GFX_RB_RPTR_ADDR_HI + reg_offset, + upper_32_bits(rdev->wb.gpu_addr + wb_offset) & 0xFFFFFFFF); + WREG32(SDMA0_GFX_RB_RPTR_ADDR_LO + reg_offset, + ((rdev->wb.gpu_addr + wb_offset) & 0xFFFFFFFC)); + + if (rdev->wb.enabled) + rb_cntl |= SDMA_RPTR_WRITEBACK_ENABLE; + + WREG32(SDMA0_GFX_RB_BASE + reg_offset, ring->gpu_addr >> 8); + WREG32(SDMA0_GFX_RB_BASE_HI + reg_offset, ring->gpu_addr >> 40); + + ring->wptr = 0; + WREG32(SDMA0_GFX_RB_WPTR + reg_offset, ring->wptr << 2); + + ring->rptr = RREG32(SDMA0_GFX_RB_RPTR + reg_offset) >> 2; + + /* enable DMA RB */ + WREG32(SDMA0_GFX_RB_CNTL + reg_offset, rb_cntl | SDMA_RB_ENABLE); + + ib_cntl = SDMA_IB_ENABLE; +#ifdef __BIG_ENDIAN + ib_cntl |= SDMA_IB_SWAP_ENABLE; +#endif + /* enable DMA IBs */ + WREG32(SDMA0_GFX_IB_CNTL + reg_offset, ib_cntl); + + ring->ready = true; + + r = radeon_ring_test(rdev, ring->idx, ring); + if (r) { + ring->ready = false; + return r; + } + } + + radeon_ttm_set_active_vram_size(rdev, rdev->mc.real_vram_size); + + return 0; +} + +/** + * cik_sdma_rlc_resume - setup and start the async dma engines + * + * @rdev: radeon_device pointer + * + * Set up the compute DMA queues and enable them (CIK). + * Returns 0 for success, error for failure. + */ +static int cik_sdma_rlc_resume(struct radeon_device *rdev) +{ + /* XXX todo */ + return 0; +} + +/** + * cik_sdma_load_microcode - load the sDMA ME ucode + * + * @rdev: radeon_device pointer + * + * Loads the sDMA0/1 ucode. + * Returns 0 for success, -EINVAL if the ucode is not available. + */ +static int cik_sdma_load_microcode(struct radeon_device *rdev) +{ + const __be32 *fw_data; + int i; + + if (!rdev->sdma_fw) + return -EINVAL; + + /* stop the gfx rings and rlc compute queues */ + cik_sdma_gfx_stop(rdev); + cik_sdma_rlc_stop(rdev); + + /* halt the MEs */ + cik_sdma_enable(rdev, false); + + /* sdma0 */ + fw_data = (const __be32 *)rdev->sdma_fw->data; + WREG32(SDMA0_UCODE_ADDR + SDMA0_REGISTER_OFFSET, 0); + for (i = 0; i < CIK_SDMA_UCODE_SIZE; i++) + WREG32(SDMA0_UCODE_DATA + SDMA0_REGISTER_OFFSET, be32_to_cpup(fw_data++)); + WREG32(SDMA0_UCODE_DATA + SDMA0_REGISTER_OFFSET, CIK_SDMA_UCODE_VERSION); + + /* sdma1 */ + fw_data = (const __be32 *)rdev->sdma_fw->data; + WREG32(SDMA0_UCODE_ADDR + SDMA1_REGISTER_OFFSET, 0); + for (i = 0; i < CIK_SDMA_UCODE_SIZE; i++) + WREG32(SDMA0_UCODE_DATA + SDMA1_REGISTER_OFFSET, be32_to_cpup(fw_data++)); + WREG32(SDMA0_UCODE_DATA + SDMA1_REGISTER_OFFSET, CIK_SDMA_UCODE_VERSION); + + WREG32(SDMA0_UCODE_ADDR + SDMA0_REGISTER_OFFSET, 0); + WREG32(SDMA0_UCODE_ADDR + SDMA1_REGISTER_OFFSET, 0); + return 0; +} + +/** + * cik_sdma_resume - setup and start the async dma engines + * + * @rdev: radeon_device pointer + * + * Set up the DMA engines and enable them (CIK). + * Returns 0 for success, error for failure. + */ +static int cik_sdma_resume(struct radeon_device *rdev) +{ + int r; + + /* Reset dma */ + WREG32(SRBM_SOFT_RESET, SOFT_RESET_SDMA | SOFT_RESET_SDMA1); + RREG32(SRBM_SOFT_RESET); + udelay(50); + WREG32(SRBM_SOFT_RESET, 0); + RREG32(SRBM_SOFT_RESET); + + r = cik_sdma_load_microcode(rdev); + if (r) + return r; + + /* unhalt the MEs */ + cik_sdma_enable(rdev, true); + + /* start the gfx rings and rlc compute queues */ + r = cik_sdma_gfx_resume(rdev); + if (r) + return r; + r = cik_sdma_rlc_resume(rdev); + if (r) + return r; + + return 0; +} + +/** + * cik_sdma_fini - tear down the async dma engines + * + * @rdev: radeon_device pointer + * + * Stop the async dma engines and free the rings (CIK). + */ +static void cik_sdma_fini(struct radeon_device *rdev) +{ + /* stop the gfx rings and rlc compute queues */ + cik_sdma_gfx_stop(rdev); + cik_sdma_rlc_stop(rdev); + /* halt the MEs */ + cik_sdma_enable(rdev, false); + radeon_ring_fini(rdev, &rdev->ring[R600_RING_TYPE_DMA_INDEX]); + radeon_ring_fini(rdev, &rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX]); + /* XXX - compute dma queue tear down */ +} + +/** + * cik_copy_dma - copy pages using the DMA engine + * + * @rdev: radeon_device pointer + * @src_offset: src GPU address + * @dst_offset: dst GPU address + * @num_gpu_pages: number of GPU pages to xfer + * @fence: radeon fence object + * + * Copy GPU paging using the DMA engine (CIK). + * Used by the radeon ttm implementation to move pages if + * registered as the asic copy callback. + */ +int cik_copy_dma(struct radeon_device *rdev, + uint64_t src_offset, uint64_t dst_offset, + unsigned num_gpu_pages, + struct radeon_fence **fence) +{ + struct radeon_semaphore *sem = NULL; + int ring_index = rdev->asic->copy.dma_ring_index; + struct radeon_ring *ring = &rdev->ring[ring_index]; + u32 size_in_bytes, cur_size_in_bytes; + int i, num_loops; + int r = 0; + + r = radeon_semaphore_create(rdev, &sem); + if (r) { + DRM_ERROR("radeon: moving bo (%d).\n", r); + return r; + } + + size_in_bytes = (num_gpu_pages << RADEON_GPU_PAGE_SHIFT); + num_loops = DIV_ROUND_UP(size_in_bytes, 0x1fffff); + r = radeon_ring_lock(rdev, ring, num_loops * 7 + 14); + if (r) { + DRM_ERROR("radeon: moving bo (%d).\n", r); + radeon_semaphore_free(rdev, &sem, NULL); + return r; + } + + if (radeon_fence_need_sync(*fence, ring->idx)) { + radeon_semaphore_sync_rings(rdev, sem, (*fence)->ring, + ring->idx); + radeon_fence_note_sync(*fence, ring->idx); + } else { + radeon_semaphore_free(rdev, &sem, NULL); + } + + for (i = 0; i < num_loops; i++) { + cur_size_in_bytes = size_in_bytes; + if (cur_size_in_bytes > 0x1fffff) + cur_size_in_bytes = 0x1fffff; + size_in_bytes -= cur_size_in_bytes; + radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_COPY, SDMA_COPY_SUB_OPCODE_LINEAR, 0)); + radeon_ring_write(ring, cur_size_in_bytes); + radeon_ring_write(ring, 0); /* src/dst endian swap */ + radeon_ring_write(ring, src_offset & 0xffffffff); + radeon_ring_write(ring, upper_32_bits(src_offset) & 0xffffffff); + radeon_ring_write(ring, dst_offset & 0xfffffffc); + radeon_ring_write(ring, upper_32_bits(dst_offset) & 0xffffffff); + src_offset += cur_size_in_bytes; + dst_offset += cur_size_in_bytes; + } + + r = radeon_fence_emit(rdev, fence, ring->idx); + if (r) { + radeon_ring_unlock_undo(rdev, ring); + return r; + } + + radeon_ring_unlock_commit(rdev, ring); + radeon_semaphore_free(rdev, &sem, *fence); + + return r; +} + +/** + * cik_sdma_ring_test - simple async dma engine test + * + * @rdev: radeon_device pointer + * @ring: radeon_ring structure holding ring information + * + * Test the DMA engine by writing using it to write an + * value to memory. (CIK). + * Returns 0 for success, error for failure. + */ +int cik_sdma_ring_test(struct radeon_device *rdev, + struct radeon_ring *ring) +{ + unsigned i; + int r; + void __iomem *ptr = (void *)rdev->vram_scratch.ptr; + u32 tmp; + + if (!ptr) { + DRM_ERROR("invalid vram scratch pointer\n"); + return -EINVAL; + } + + tmp = 0xCAFEDEAD; + writel(tmp, ptr); + + r = radeon_ring_lock(rdev, ring, 4); + if (r) { + DRM_ERROR("radeon: dma failed to lock ring %d (%d).\n", ring->idx, r); + return r; + } + radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0)); + radeon_ring_write(ring, rdev->vram_scratch.gpu_addr & 0xfffffffc); + radeon_ring_write(ring, upper_32_bits(rdev->vram_scratch.gpu_addr) & 0xffffffff); + radeon_ring_write(ring, 1); /* number of DWs to follow */ + radeon_ring_write(ring, 0xDEADBEEF); + radeon_ring_unlock_commit(rdev, ring); + + for (i = 0; i < rdev->usec_timeout; i++) { + tmp = readl(ptr); + if (tmp == 0xDEADBEEF) + break; + DRM_UDELAY(1); + } + + if (i < rdev->usec_timeout) { + DRM_INFO("ring test on %d succeeded in %d usecs\n", ring->idx, i); + } else { + DRM_ERROR("radeon: ring %d test failed (0x%08X)\n", + ring->idx, tmp); + r = -EINVAL; + } + return r; +} + +/** + * cik_sdma_ib_test - test an IB on the DMA engine + * + * @rdev: radeon_device pointer + * @ring: radeon_ring structure holding ring information + * + * Test a simple IB in the DMA ring (CIK). + * Returns 0 on success, error on failure. + */ +int cik_sdma_ib_test(struct radeon_device *rdev, struct radeon_ring *ring) +{ + struct radeon_ib ib; + unsigned i; + int r; + void __iomem *ptr = (void *)rdev->vram_scratch.ptr; + u32 tmp = 0; + + if (!ptr) { + DRM_ERROR("invalid vram scratch pointer\n"); + return -EINVAL; + } + + tmp = 0xCAFEDEAD; + writel(tmp, ptr); + + r = radeon_ib_get(rdev, ring->idx, &ib, NULL, 256); + if (r) { + DRM_ERROR("radeon: failed to get ib (%d).\n", r); + return r; + } + + ib.ptr[0] = SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0); + ib.ptr[1] = rdev->vram_scratch.gpu_addr & 0xfffffffc; + ib.ptr[2] = upper_32_bits(rdev->vram_scratch.gpu_addr) & 0xffffffff; + ib.ptr[3] = 1; + ib.ptr[4] = 0xDEADBEEF; + ib.length_dw = 5; + + r = radeon_ib_schedule(rdev, &ib, NULL); + if (r) { + radeon_ib_free(rdev, &ib); + DRM_ERROR("radeon: failed to schedule ib (%d).\n", r); + return r; + } + r = radeon_fence_wait(ib.fence, false); + if (r) { + DRM_ERROR("radeon: fence wait failed (%d).\n", r); + return r; + } + for (i = 0; i < rdev->usec_timeout; i++) { + tmp = readl(ptr); + if (tmp == 0xDEADBEEF) + break; + DRM_UDELAY(1); + } + if (i < rdev->usec_timeout) { + DRM_INFO("ib test on ring %d succeeded in %u usecs\n", ib.fence->ring, i); + } else { + DRM_ERROR("radeon: ib test failed (0x%08X)\n", tmp); + r = -EINVAL; + } + radeon_ib_free(rdev, &ib); + return r; +} + /** * cik_gpu_is_lockup - check if the 3D engine is locked up * @@ -2330,6 +2925,32 @@ int cik_asic_reset(struct radeon_device *rdev) return cik_gfx_gpu_soft_reset(rdev); }
+/** + * cik_sdma_is_lockup - Check if the DMA engine is locked up + * + * @rdev: radeon_device pointer + * @ring: radeon_ring structure holding ring information + * + * Check if the async DMA engine is locked up (CIK). + * Returns true if the engine appears to be locked up, false if not. + */ +bool cik_sdma_is_lockup(struct radeon_device *rdev, struct radeon_ring *ring) +{ + u32 dma_status_reg; + + if (ring->idx == R600_RING_TYPE_DMA_INDEX) + dma_status_reg = RREG32(SDMA0_STATUS_REG + SDMA0_REGISTER_OFFSET); + else + dma_status_reg = RREG32(SDMA0_STATUS_REG + SDMA1_REGISTER_OFFSET); + if (dma_status_reg & SDMA_IDLE) { + radeon_ring_lockup_update(ring); + return false; + } + /* force ring activities */ + radeon_ring_force_activity(rdev, ring); + return radeon_ring_test_lockup(rdev, ring); +} + /* MC */ /** * cik_mc_program - program the GPU memory controller @@ -2588,10 +3209,17 @@ static int cik_pcie_gart_enable(struct radeon_device *rdev) /* where to put LDS, scratch, GPUVM in FSA64 space */ for (i = 0; i < 16; i++) { WREG32(SRBM_GFX_CNTL, VMID(i)); + /* CP and shaders */ WREG32(SH_MEM_CONFIG, 0); WREG32(SH_MEM_APE1_BASE, 1); WREG32(SH_MEM_APE1_LIMIT, 0); WREG32(SH_MEM_BASES, 0); + /* SDMA GFX */ + WREG32(SDMA0_GFX_VIRTUAL_ADDR + SDMA0_REGISTER_OFFSET, 0); + WREG32(SDMA0_GFX_APE1_CNTL + SDMA0_REGISTER_OFFSET, 0); + WREG32(SDMA0_GFX_VIRTUAL_ADDR + SDMA1_REGISTER_OFFSET, 0); + WREG32(SDMA0_GFX_APE1_CNTL + SDMA1_REGISTER_OFFSET, 0); + /* XXX SDMA RLC - todo */ } WREG32(SRBM_GFX_CNTL, 0);
@@ -2992,6 +3620,11 @@ static void cik_disable_interrupt_state(struct radeon_device *rdev)
/* gfx ring */ WREG32(CP_INT_CNTL_RING0, CNTX_BUSY_INT_ENABLE | CNTX_EMPTY_INT_ENABLE); + /* sdma */ + tmp = RREG32(SDMA0_CNTL + SDMA0_REGISTER_OFFSET) & ~TRAP_ENABLE; + WREG32(SDMA0_CNTL + SDMA0_REGISTER_OFFSET, tmp); + tmp = RREG32(SDMA0_CNTL + SDMA1_REGISTER_OFFSET) & ~TRAP_ENABLE; + WREG32(SDMA0_CNTL + SDMA1_REGISTER_OFFSET, tmp); /* compute queues */ WREG32(CP_ME1_PIPE0_INT_CNTL, 0); WREG32(CP_ME1_PIPE1_INT_CNTL, 0); @@ -3132,6 +3765,7 @@ int cik_irq_set(struct radeon_device *rdev) u32 crtc1 = 0, crtc2 = 0, crtc3 = 0, crtc4 = 0, crtc5 = 0, crtc6 = 0; u32 hpd1, hpd2, hpd3, hpd4, hpd5, hpd6; u32 grbm_int_cntl = 0; + u32 dma_cntl, dma_cntl1;
if (!rdev->irq.installed) { WARN(1, "Can't enable IRQ/MSI because no handler is installed\n"); @@ -3152,6 +3786,9 @@ int cik_irq_set(struct radeon_device *rdev) hpd5 = RREG32(DC_HPD5_INT_CONTROL) & ~DC_HPDx_INT_EN; hpd6 = RREG32(DC_HPD6_INT_CONTROL) & ~DC_HPDx_INT_EN;
+ dma_cntl = RREG32(SDMA0_CNTL + SDMA0_REGISTER_OFFSET) & ~TRAP_ENABLE; + dma_cntl1 = RREG32(SDMA0_CNTL + SDMA1_REGISTER_OFFSET) & ~TRAP_ENABLE; + /* enable CP interrupts on all rings */ if (atomic_read(&rdev->irq.ring_int[RADEON_RING_TYPE_GFX_INDEX])) { DRM_DEBUG("cik_irq_set: sw int gfx\n"); @@ -3160,6 +3797,16 @@ int cik_irq_set(struct radeon_device *rdev) /* TODO: compute queues! */ /* CP_ME[1-2]_PIPE[0-3]_INT_CNTL */
+ if (atomic_read(&rdev->irq.ring_int[R600_RING_TYPE_DMA_INDEX])) { + DRM_DEBUG("cik_irq_set: sw int dma\n"); + dma_cntl |= TRAP_ENABLE; + } + + if (atomic_read(&rdev->irq.ring_int[CAYMAN_RING_TYPE_DMA1_INDEX])) { + DRM_DEBUG("cik_irq_set: sw int dma1\n"); + dma_cntl1 |= TRAP_ENABLE; + } + if (rdev->irq.crtc_vblank_int[0] || atomic_read(&rdev->irq.pflip[0])) { DRM_DEBUG("cik_irq_set: vblank 0\n"); @@ -3217,6 +3864,9 @@ int cik_irq_set(struct radeon_device *rdev)
WREG32(CP_INT_CNTL_RING0, cp_int_cntl);
+ WREG32(SDMA0_CNTL + SDMA0_REGISTER_OFFSET, dma_cntl); + WREG32(SDMA0_CNTL + SDMA1_REGISTER_OFFSET, dma_cntl1); + WREG32(GRBM_INT_CNTL, grbm_int_cntl);
WREG32(LB_INTERRUPT_MASK + EVERGREEN_CRTC0_REGISTER_OFFSET, crtc1); @@ -3410,12 +4060,18 @@ static inline u32 cik_get_ih_wptr(struct radeon_device *rdev) * [31:8] - reserved * [59:32] - interrupt source data * [63:60] - reserved - * [71:64] - RINGID: ME_ID [1:0], PIPE_ID[1:0], QUEUE_ID[2:0] + * [71:64] - RINGID + * CP: + * ME_ID [1:0], PIPE_ID[1:0], QUEUE_ID[2:0] * QUEUE_ID - for compute, which of the 8 queues owned by the dispatcher * - for gfx, hw shader state (0=PS...5=LS, 6=CS) * ME_ID - 0 = gfx, 1 = first 4 CS pipes, 2 = second 4 CS pipes * PIPE_ID - ME0 0=3D * - ME1&2 compute dispatcher (4 pipes each) + * SDMA: + * INSTANCE_ID [1:0], QUEUE_ID[1:0] + * INSTANCE_ID - 0 = sdma0, 1 = sdma1 + * QUEUE_ID - 0 = gfx, 1 = rlc0, 2 = rlc1 * [79:72] - VMID * [95:80] - PASID * [127:96] - reserved @@ -3465,10 +4121,6 @@ restart_ih: src_id = le32_to_cpu(rdev->ih.ring[ring_index]) & 0xff; src_data = le32_to_cpu(rdev->ih.ring[ring_index + 1]) & 0xfffffff; ring_id = le32_to_cpu(rdev->ih.ring[ring_index + 2]) & 0xff; - /* XXX check the bitfield order! */ - me_id = (ring_id & 0x60) >> 5; - pipe_id = (ring_id & 0x18) >> 3; - queue_id = (ring_id & 0x7) >> 0;
switch (src_id) { case 1: /* D1 vblank/vline */ @@ -3692,6 +4344,10 @@ restart_ih: break; case 181: /* CP EOP event */ DRM_DEBUG("IH: CP EOP\n"); + /* XXX check the bitfield order! */ + me_id = (ring_id & 0x60) >> 5; + pipe_id = (ring_id & 0x18) >> 3; + queue_id = (ring_id & 0x7) >> 0; switch (me_id) { case 0: radeon_fence_process(rdev, RADEON_RING_TYPE_GFX_INDEX); @@ -3727,6 +4383,10 @@ restart_ih: break; case 185: /* CP Privileged inst */ DRM_ERROR("Illegal instruction in command stream\n"); + /* XXX check the bitfield order! */ + me_id = (ring_id & 0x60) >> 5; + pipe_id = (ring_id & 0x18) >> 3; + queue_id = (ring_id & 0x7) >> 0; switch (me_id) { case 0: /* This results in a full GPU reset, but all we need to do is soft @@ -3742,6 +4402,79 @@ restart_ih: break; } break; + case 224: /* SDMA trap event */ + /* XXX check the bitfield order! */ + me_id = (ring_id & 0x3) >> 0; + queue_id = (ring_id & 0xc) >> 2; + DRM_DEBUG("IH: SDMA trap\n"); + switch (me_id) { + case 0: + switch (queue_id) { + case 0: + radeon_fence_process(rdev, R600_RING_TYPE_DMA_INDEX); + break; + case 1: + /* XXX compute */ + break; + case 2: + /* XXX compute */ + break; + } + break; + case 1: + switch (queue_id) { + case 0: + radeon_fence_process(rdev, CAYMAN_RING_TYPE_DMA1_INDEX); + break; + case 1: + /* XXX compute */ + break; + case 2: + /* XXX compute */ + break; + } + break; + } + break; + case 241: /* SDMA Privileged inst */ + case 247: /* SDMA Privileged inst */ + DRM_ERROR("Illegal instruction in SDMA command stream\n"); + /* XXX check the bitfield order! */ + me_id = (ring_id & 0x3) >> 0; + queue_id = (ring_id & 0xc) >> 2; + switch (me_id) { + case 0: + switch (queue_id) { + case 0: + queue_reset = true; + break; + case 1: + /* XXX compute */ + queue_reset = true; + break; + case 2: + /* XXX compute */ + queue_reset = true; + break; + } + break; + case 1: + switch (queue_id) { + case 0: + queue_reset = true; + break; + case 1: + /* XXX compute */ + queue_reset = true; + break; + case 2: + /* XXX compute */ + queue_reset = true; + break; + } + break; + } + break; case 233: /* GUI IDLE */ DRM_DEBUG("IH: GUI idle\n"); break; diff --git a/drivers/gpu/drm/radeon/cikd.h b/drivers/gpu/drm/radeon/cikd.h index cc4f28e..39ed517 100644 --- a/drivers/gpu/drm/radeon/cikd.h +++ b/drivers/gpu/drm/radeon/cikd.h @@ -42,6 +42,24 @@ #define SRBM_STATUS2 0xE4C #define SRBM_STATUS 0xE50
+#define SRBM_SOFT_RESET 0xE60 +#define SOFT_RESET_BIF (1 << 1) +#define SOFT_RESET_R0PLL (1 << 4) +#define SOFT_RESET_DC (1 << 5) +#define SOFT_RESET_SDMA1 (1 << 6) +#define SOFT_RESET_GRBM (1 << 8) +#define SOFT_RESET_HDP (1 << 9) +#define SOFT_RESET_IH (1 << 10) +#define SOFT_RESET_MC (1 << 11) +#define SOFT_RESET_ROM (1 << 14) +#define SOFT_RESET_SEM (1 << 15) +#define SOFT_RESET_VMC (1 << 17) +#define SOFT_RESET_SDMA (1 << 20) +#define SOFT_RESET_TST (1 << 21) +#define SOFT_RESET_REGBB (1 << 22) +#define SOFT_RESET_ORB (1 << 23) +#define SOFT_RESET_VCE (1 << 24) + #define VM_L2_CNTL 0x1400 #define ENABLE_L2_CACHE (1 << 0) #define ENABLE_L2_FRAGMENT_PROCESSING (1 << 1) @@ -1039,4 +1057,116 @@ #define PACKET3_WAIT_ON_DE_COUNTER_DIFF 0x88 #define PACKET3_SWITCH_BUFFER 0x8B
+/* SDMA - first instance at 0xd000, second at 0xd800 */ +#define SDMA0_REGISTER_OFFSET 0x0 /* not a register */ +#define SDMA1_REGISTER_OFFSET 0x800 /* not a register */ + +#define SDMA0_UCODE_ADDR 0xD000 +#define SDMA0_UCODE_DATA 0xD004 + +#define SDMA0_CNTL 0xD010 +# define TRAP_ENABLE (1 << 0) +# define SEM_INCOMPLETE_INT_ENABLE (1 << 1) +# define SEM_WAIT_INT_ENABLE (1 << 2) +# define DATA_SWAP_ENABLE (1 << 3) +# define FENCE_SWAP_ENABLE (1 << 4) +# define AUTO_CTXSW_ENABLE (1 << 18) +# define CTXEMPTY_INT_ENABLE (1 << 28) + +#define SDMA0_TILING_CONFIG 0xD018 + +#define SDMA0_SEM_INCOMPLETE_TIMER_CNTL 0xD020 +#define SDMA0_SEM_WAIT_FAIL_TIMER_CNTL 0xD024 + +#define SDMA0_STATUS_REG 0xd034 +# define SDMA_IDLE (1 << 0) + +#define SDMA0_ME_CNTL 0xD048 +# define SDMA_HALT (1 << 0) + +#define SDMA0_GFX_RB_CNTL 0xD200 +# define SDMA_RB_ENABLE (1 << 0) +# define SDMA_RB_SIZE(x) ((x) << 1) /* log2 */ +# define SDMA_RB_SWAP_ENABLE (1 << 9) /* 8IN32 */ +# define SDMA_RPTR_WRITEBACK_ENABLE (1 << 12) +# define SDMA_RPTR_WRITEBACK_SWAP_ENABLE (1 << 13) /* 8IN32 */ +# define SDMA_RPTR_WRITEBACK_TIMER(x) ((x) << 16) /* log2 */ +#define SDMA0_GFX_RB_BASE 0xD204 +#define SDMA0_GFX_RB_BASE_HI 0xD208 +#define SDMA0_GFX_RB_RPTR 0xD20C +#define SDMA0_GFX_RB_WPTR 0xD210 + +#define SDMA0_GFX_RB_RPTR_ADDR_HI 0xD220 +#define SDMA0_GFX_RB_RPTR_ADDR_LO 0xD224 +#define SDMA0_GFX_IB_CNTL 0xD228 +# define SDMA_IB_ENABLE (1 << 0) +# define SDMA_IB_SWAP_ENABLE (1 << 4) +# define SDMA_SWITCH_INSIDE_IB (1 << 8) +# define SDMA_CMD_VMID(x) ((x) << 16) + +#define SDMA0_GFX_VIRTUAL_ADDR 0xD29C +#define SDMA0_GFX_APE1_CNTL 0xD2A0 + +#define SDMA_PACKET(op, sub_op, e) ((((e) & 0xFFFF) << 16) | \ + (((sub_op) & 0xFF) << 8) | \ + (((op) & 0xFF) << 0)) +/* sDMA opcodes */ +#define SDMA_OPCODE_NOP 0 +#define SDMA_OPCODE_COPY 1 +# define SDMA_COPY_SUB_OPCODE_LINEAR 0 +# define SDMA_COPY_SUB_OPCODE_TILED 1 +# define SDMA_COPY_SUB_OPCODE_SOA 3 +# define SDMA_COPY_SUB_OPCODE_LINEAR_SUB_WINDOW 4 +# define SDMA_COPY_SUB_OPCODE_TILED_SUB_WINDOW 5 +# define SDMA_COPY_SUB_OPCODE_T2T_SUB_WINDOW 6 +#define SDMA_OPCODE_WRITE 2 +# define SDMA_WRITE_SUB_OPCODE_LINEAR 0 +# define SDMA_WRTIE_SUB_OPCODE_TILED 1 +#define SDMA_OPCODE_INDIRECT_BUFFER 4 +#define SDMA_OPCODE_FENCE 5 +#define SDMA_OPCODE_TRAP 6 +#define SDMA_OPCODE_SEMAPHORE 7 +# define SDMA_SEMAPHORE_EXTRA_O (1 << 13) + /* 0 - increment + * 1 - write 1 + */ +# define SDMA_SEMAPHORE_EXTRA_S (1 << 14) + /* 0 - wait + * 1 - signal + */ +# define SDMA_SEMAPHORE_EXTRA_M (1 << 15) + /* mailbox */ +#define SDMA_OPCODE_POLL_REG_MEM 8 +# define SDMA_POLL_REG_MEM_EXTRA_OP(x) ((x) << 10) + /* 0 - wait_reg_mem + * 1 - wr_wait_wr_reg + */ +# define SDMA_POLL_REG_MEM_EXTRA_FUNC(x) ((x) << 12) + /* 0 - always + * 1 - < + * 2 - <= + * 3 - == + * 4 - != + * 5 - >= + * 6 - > + */ +# define SDMA_POLL_REG_MEM_EXTRA_M (1 << 15) + /* 0 = register + * 1 = memory + */ +#define SDMA_OPCODE_COND_EXEC 9 +#define SDMA_OPCODE_CONSTANT_FILL 11 +# define SDMA_CONSTANT_FILL_EXTRA_SIZE(x) ((x) << 14) + /* 0 = byte fill + * 2 = DW fill + */ +#define SDMA_OPCODE_GENERATE_PTE_PDE 12 +#define SDMA_OPCODE_TIMESTAMP 13 +# define SDMA_TIMESTAMP_SUB_OPCODE_SET_LOCAL 0 +# define SDMA_TIMESTAMP_SUB_OPCODE_GET_LOCAL 1 +# define SDMA_TIMESTAMP_SUB_OPCODE_GET_GLOBAL 2 +#define SDMA_OPCODE_SRBM_WRITE 14 +# define SDMA_SRBM_WRITE_EXTRA_BYTE_ENABLE(x) ((x) << 12) + /* byte mask */ + #endif diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index e09157b..919c4d8 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -1726,6 +1726,7 @@ struct radeon_device { const struct firmware *ce_fw; /* SI CE firmware */ const struct firmware *uvd_fw; /* UVD firmware */ const struct firmware *mec_fw; /* CIK MEC firmware */ + const struct firmware *sdma_fw; /* CIK SDMA firmware */ struct r600_blit r600_blit; struct r600_vram_scratch vram_scratch; int msi_enabled; /* msi enabled */