diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/ni.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/ni.c | 272 |
1 files changed, 271 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c index 30c18a6e0044..b81aca44fd41 100644 --- a/drivers/gpu/drm/radeon/ni.c +++ b/drivers/gpu/drm/radeon/ni.c @@ -611,6 +611,8 @@ static void cayman_gpu_init(struct radeon_device *rdev) WREG32(GB_ADDR_CONFIG, gb_addr_config); WREG32(DMIF_ADDR_CONFIG, gb_addr_config); WREG32(HDP_ADDR_CONFIG, gb_addr_config); + WREG32(DMA_TILING_CONFIG + DMA0_REGISTER_OFFSET, gb_addr_config); + WREG32(DMA_TILING_CONFIG + DMA1_REGISTER_OFFSET, gb_addr_config); tmp = gb_addr_config & NUM_PIPES_MASK; tmp = r6xx_remap_render_backend(rdev, tmp, @@ -915,6 +917,7 @@ static void cayman_cp_enable(struct radeon_device *rdev, bool enable) radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size); WREG32(CP_ME_CNTL, (CP_ME_HALT | CP_PFP_HALT)); WREG32(SCRATCH_UMSK, 0); + rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready = false; } } @@ -1128,6 +1131,181 @@ static int cayman_cp_resume(struct radeon_device *rdev) return 0; } +/* + * DMA + * Starting with R600, the GPU has an asynchronous + * DMA engine. The programming model is very similar + * to the 3D engine (ring buffer, IBs, etc.), but the + * DMA controller has it's own packet format that is + * different form the PM4 format used by the 3D engine. + * It supports copying data, writing embedded data, + * solid fills, and a number of other things. It also + * has support for tiling/detiling of buffers. + * Cayman and newer support two asynchronous DMA engines. + */ +/** + * cayman_dma_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 (cayman-SI). + */ +void cayman_dma_ring_ib_execute(struct radeon_device *rdev, + struct radeon_ib *ib) +{ + struct radeon_ring *ring = &rdev->ring[ib->ring]; + + if (rdev->wb.enabled) { + u32 next_rptr = ring->wptr + 4; + while ((next_rptr & 7) != 5) + next_rptr++; + next_rptr += 3; + radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 1)); + radeon_ring_write(ring, ring->next_rptr_gpu_addr & 0xfffffffc); + radeon_ring_write(ring, upper_32_bits(ring->next_rptr_gpu_addr) & 0xff); + radeon_ring_write(ring, next_rptr); + } + + /* The indirect buffer packet must end on an 8 DW boundary in the DMA ring. + * Pad as necessary with NOPs. + */ + while ((ring->wptr & 7) != 5) + radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0)); + radeon_ring_write(ring, DMA_IB_PACKET(DMA_PACKET_INDIRECT_BUFFER, ib->vm ? ib->vm->id : 0, 0)); + radeon_ring_write(ring, (ib->gpu_addr & 0xFFFFFFE0)); + radeon_ring_write(ring, (ib->length_dw << 12) | (upper_32_bits(ib->gpu_addr) & 0xFF)); + +} + +/** + * cayman_dma_stop - stop the async dma engines + * + * @rdev: radeon_device pointer + * + * Stop the async dma engines (cayman-SI). + */ +void cayman_dma_stop(struct radeon_device *rdev) +{ + u32 rb_cntl; + + radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size); + + /* dma0 */ + rb_cntl = RREG32(DMA_RB_CNTL + DMA0_REGISTER_OFFSET); + rb_cntl &= ~DMA_RB_ENABLE; + WREG32(DMA_RB_CNTL + DMA0_REGISTER_OFFSET, rb_cntl); + + /* dma1 */ + rb_cntl = RREG32(DMA_RB_CNTL + DMA1_REGISTER_OFFSET); + rb_cntl &= ~DMA_RB_ENABLE; + WREG32(DMA_RB_CNTL + DMA1_REGISTER_OFFSET, rb_cntl); + + rdev->ring[R600_RING_TYPE_DMA_INDEX].ready = false; + rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX].ready = false; +} + +/** + * cayman_dma_resume - setup and start the async dma engines + * + * @rdev: radeon_device pointer + * + * Set up the DMA ring buffers and enable them. (cayman-SI). + * Returns 0 for success, error for failure. + */ +int cayman_dma_resume(struct radeon_device *rdev) +{ + struct radeon_ring *ring; + u32 rb_cntl, dma_cntl; + u32 rb_bufsz; + u32 reg_offset, wb_offset; + int i, r; + + /* Reset dma */ + WREG32(SRBM_SOFT_RESET, SOFT_RESET_DMA | SOFT_RESET_DMA1); + RREG32(SRBM_SOFT_RESET); + udelay(50); + WREG32(SRBM_SOFT_RESET, 0); + + for (i = 0; i < 2; i++) { + if (i == 0) { + ring = &rdev->ring[R600_RING_TYPE_DMA_INDEX]; + reg_offset = DMA0_REGISTER_OFFSET; + wb_offset = R600_WB_DMA_RPTR_OFFSET; + } else { + ring = &rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX]; + reg_offset = DMA1_REGISTER_OFFSET; + wb_offset = CAYMAN_WB_DMA1_RPTR_OFFSET; + } + + WREG32(DMA_SEM_INCOMPLETE_TIMER_CNTL + reg_offset, 0); + WREG32(DMA_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 |= DMA_RB_SWAP_ENABLE | DMA_RPTR_WRITEBACK_SWAP_ENABLE; +#endif + WREG32(DMA_RB_CNTL + reg_offset, rb_cntl); + + /* Initialize the ring buffer's read and write pointers */ + WREG32(DMA_RB_RPTR + reg_offset, 0); + WREG32(DMA_RB_WPTR + reg_offset, 0); + + /* set the wb address whether it's enabled or not */ + WREG32(DMA_RB_RPTR_ADDR_HI + reg_offset, + upper_32_bits(rdev->wb.gpu_addr + wb_offset) & 0xFF); + WREG32(DMA_RB_RPTR_ADDR_LO + reg_offset, + ((rdev->wb.gpu_addr + wb_offset) & 0xFFFFFFFC)); + + if (rdev->wb.enabled) + rb_cntl |= DMA_RPTR_WRITEBACK_ENABLE; + + WREG32(DMA_RB_BASE + reg_offset, ring->gpu_addr >> 8); + + /* enable DMA IBs */ + WREG32(DMA_IB_CNTL + reg_offset, DMA_IB_ENABLE | CMD_VMID_FORCE); + + dma_cntl = RREG32(DMA_CNTL + reg_offset); + dma_cntl &= ~CTXEMPTY_INT_ENABLE; + WREG32(DMA_CNTL + reg_offset, dma_cntl); + + ring->wptr = 0; + WREG32(DMA_RB_WPTR + reg_offset, ring->wptr << 2); + + ring->rptr = RREG32(DMA_RB_RPTR + reg_offset) >> 2; + + WREG32(DMA_RB_CNTL + reg_offset, rb_cntl | DMA_RB_ENABLE); + + 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; +} + +/** + * cayman_dma_fini - tear down the async dma engines + * + * @rdev: radeon_device pointer + * + * Stop the async dma engines and free the rings (cayman-SI). + */ +void cayman_dma_fini(struct radeon_device *rdev) +{ + cayman_dma_stop(rdev); + radeon_ring_fini(rdev, &rdev->ring[R600_RING_TYPE_DMA_INDEX]); + radeon_ring_fini(rdev, &rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX]); +} + static int cayman_gpu_soft_reset(struct radeon_device *rdev) { struct evergreen_mc_save save; @@ -1218,6 +1396,32 @@ int cayman_asic_reset(struct radeon_device *rdev) return cayman_gpu_soft_reset(rdev); } +/** + * cayman_dma_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 (cayman-SI). + * Returns true if the engine appears to be locked up, false if not. + */ +bool cayman_dma_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(DMA_STATUS_REG + DMA0_REGISTER_OFFSET); + else + dma_status_reg = RREG32(DMA_STATUS_REG + DMA1_REGISTER_OFFSET); + if (dma_status_reg & DMA_IDLE) { + radeon_ring_lockup_update(ring); + return false; + } + /* force ring activities */ + radeon_ring_force_activity(rdev, ring); + return radeon_ring_test_lockup(rdev, ring); +} + static int cayman_startup(struct radeon_device *rdev) { struct radeon_ring *ring = &rdev->ring[RADEON_RING_TYPE_GFX_INDEX]; @@ -1299,6 +1503,18 @@ static int cayman_startup(struct radeon_device *rdev) return r; } + r = radeon_fence_driver_start_ring(rdev, R600_RING_TYPE_DMA_INDEX); + if (r) { + dev_err(rdev->dev, "failed initializing DMA fences (%d).\n", r); + return r; + } + + r = radeon_fence_driver_start_ring(rdev, CAYMAN_RING_TYPE_DMA1_INDEX); + if (r) { + dev_err(rdev->dev, "failed initializing DMA fences (%d).\n", r); + return r; + } + /* Enable IRQ */ r = r600_irq_init(rdev); if (r) { @@ -1313,6 +1529,23 @@ static int cayman_startup(struct radeon_device *rdev) 0, 0xfffff, RADEON_CP_PACKET2); if (r) return r; + + ring = &rdev->ring[R600_RING_TYPE_DMA_INDEX]; + r = radeon_ring_init(rdev, ring, ring->ring_size, R600_WB_DMA_RPTR_OFFSET, + DMA_RB_RPTR + DMA0_REGISTER_OFFSET, + DMA_RB_WPTR + DMA0_REGISTER_OFFSET, + 2, 0x3fffc, DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0)); + if (r) + return r; + + ring = &rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX]; + r = radeon_ring_init(rdev, ring, ring->ring_size, CAYMAN_WB_DMA1_RPTR_OFFSET, + DMA_RB_RPTR + DMA1_REGISTER_OFFSET, + DMA_RB_WPTR + DMA1_REGISTER_OFFSET, + 2, 0x3fffc, DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0)); + if (r) + return r; + r = cayman_cp_load_microcode(rdev); if (r) return r; @@ -1320,6 +1553,10 @@ static int cayman_startup(struct radeon_device *rdev) if (r) return r; + r = cayman_dma_resume(rdev); + if (r) + return r; + r = radeon_ib_pool_init(rdev); if (r) { dev_err(rdev->dev, "IB initialization failed (%d).\n", r); @@ -1364,7 +1601,7 @@ int cayman_suspend(struct radeon_device *rdev) { r600_audio_fini(rdev); cayman_cp_enable(rdev, false); - rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready = false; + cayman_dma_stop(rdev); evergreen_irq_suspend(rdev); radeon_wb_disable(rdev); cayman_pcie_gart_disable(rdev); @@ -1431,6 +1668,14 @@ int cayman_init(struct radeon_device *rdev) ring->ring_obj = NULL; r600_ring_init(rdev, ring, 1024 * 1024); + ring = &rdev->ring[R600_RING_TYPE_DMA_INDEX]; + ring->ring_obj = NULL; + r600_ring_init(rdev, ring, 64 * 1024); + + ring = &rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX]; + ring->ring_obj = NULL; + r600_ring_init(rdev, ring, 64 * 1024); + rdev->ih.ring_obj = NULL; r600_ih_ring_init(rdev, 64 * 1024); @@ -1443,6 +1688,7 @@ int cayman_init(struct radeon_device *rdev) if (r) { dev_err(rdev->dev, "disabling GPU acceleration\n"); cayman_cp_fini(rdev); + cayman_dma_fini(rdev); r600_irq_fini(rdev); if (rdev->flags & RADEON_IS_IGP) si_rlc_fini(rdev); @@ -1473,6 +1719,7 @@ void cayman_fini(struct radeon_device *rdev) { r600_blit_fini(rdev); cayman_cp_fini(rdev); + cayman_dma_fini(rdev); r600_irq_fini(rdev); if (rdev->flags & RADEON_IS_IGP) si_rlc_fini(rdev); @@ -1606,3 +1853,26 @@ void cayman_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm) radeon_ring_write(ring, PACKET3(PACKET3_PFP_SYNC_ME, 0)); radeon_ring_write(ring, 0x0); } + +void cayman_dma_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm) +{ + struct radeon_ring *ring = &rdev->ring[ridx]; + + if (vm == NULL) + return; + + radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0)); + radeon_ring_write(ring, (0xf << 16) | ((VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm->id << 2)) >> 2)); + radeon_ring_write(ring, vm->pd_gpu_addr >> 12); + + /* flush hdp cache */ + radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0)); + radeon_ring_write(ring, (0xf << 16) | (HDP_MEM_COHERENCY_FLUSH_CNTL >> 2)); + radeon_ring_write(ring, 1); + + /* bits 0-7 are the VM contexts0-7 */ + radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0)); + radeon_ring_write(ring, (0xf << 16) | (VM_INVALIDATE_REQUEST >> 2)); + radeon_ring_write(ring, 1 << vm->id); +} + |