From: Alex Deucher Date: Tue, 4 Dec 2012 20:28:18 +0000 (-0500) Subject: drm/radeon/kms: Add initial support for async DMA on SI X-Git-Tag: v3.8-rc1~42^2~5^2~6 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8c5fd7efcc5c037bdfbf6d90639fcdc499824bbd;p=profile%2Fivi%2Fkernel-adaptation-intel-automotive.git drm/radeon/kms: Add initial support for async DMA on SI Pretty much the same as cayman. Some changes to the copy packets. Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 38b6fa3..5d68346 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -797,6 +797,10 @@ void r600_dma_stop(struct radeon_device *rdev); int r600_dma_resume(struct radeon_device *rdev); void r600_dma_fini(struct radeon_device *rdev); +void cayman_dma_stop(struct radeon_device *rdev); +int cayman_dma_resume(struct radeon_device *rdev); +void cayman_dma_fini(struct radeon_device *rdev); + /* * CS. */ diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c index 8cf8ae8..d455bcb 100644 --- a/drivers/gpu/drm/radeon/radeon_asic.c +++ b/drivers/gpu/drm/radeon/radeon_asic.c @@ -1731,6 +1731,26 @@ static struct radeon_asic si_asic = { .ib_test = &r600_ib_test, .is_lockup = &si_gpu_is_lockup, .vm_flush = &si_vm_flush, + }, + [R600_RING_TYPE_DMA_INDEX] = { + .ib_execute = &cayman_dma_ring_ib_execute, + .emit_fence = &evergreen_dma_fence_ring_emit, + .emit_semaphore = &r600_dma_semaphore_ring_emit, + .cs_parse = NULL, + .ring_test = &r600_dma_ring_test, + .ib_test = &r600_dma_ib_test, + .is_lockup = &cayman_dma_is_lockup, + .vm_flush = &si_dma_vm_flush, + }, + [CAYMAN_RING_TYPE_DMA1_INDEX] = { + .ib_execute = &cayman_dma_ring_ib_execute, + .emit_fence = &evergreen_dma_fence_ring_emit, + .emit_semaphore = &r600_dma_semaphore_ring_emit, + .cs_parse = NULL, + .ring_test = &r600_dma_ring_test, + .ib_test = &r600_dma_ib_test, + .is_lockup = &cayman_dma_is_lockup, + .vm_flush = &si_dma_vm_flush, } }, .irq = { @@ -1747,8 +1767,8 @@ static struct radeon_asic si_asic = { .copy = { .blit = NULL, .blit_ring_index = RADEON_RING_TYPE_GFX_INDEX, - .dma = NULL, - .dma_ring_index = RADEON_RING_TYPE_GFX_INDEX, + .dma = &si_copy_dma, + .dma_ring_index = R600_RING_TYPE_DMA_INDEX, .copy = NULL, .copy_ring_index = RADEON_RING_TYPE_GFX_INDEX, }, diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h index c2988f7..ae56673d 100644 --- a/drivers/gpu/drm/radeon/radeon_asic.h +++ b/drivers/gpu/drm/radeon/radeon_asic.h @@ -501,5 +501,10 @@ void si_vm_set_page(struct radeon_device *rdev, uint64_t pe, void si_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm); int si_ib_parse(struct radeon_device *rdev, struct radeon_ib *ib); uint64_t si_get_gpu_clock(struct radeon_device *rdev); +int si_copy_dma(struct radeon_device *rdev, + uint64_t src_offset, uint64_t dst_offset, + unsigned num_gpu_pages, + struct radeon_fence **fence); +void si_dma_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm); #endif diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index c4d9eb6..93f7171 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -1660,6 +1660,8 @@ static void si_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); si_tiling_mode_table_init(rdev); @@ -1836,6 +1838,9 @@ static void si_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 | CP_CE_HALT)); WREG32(SCRATCH_UMSK, 0); + rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready = false; + rdev->ring[CAYMAN_RING_TYPE_CP1_INDEX].ready = false; + rdev->ring[CAYMAN_RING_TYPE_CP2_INDEX].ready = false; } udelay(50); } @@ -2891,6 +2896,32 @@ void si_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm) radeon_ring_write(ring, 0x0); } +void si_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, 0)); + if (vm->id < 8) { + radeon_ring_write(ring, (0xf << 16) | ((VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm->id << 2)) >> 2)); + } else { + radeon_ring_write(ring, (0xf << 16) | ((VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((vm->id - 8) << 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, 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, 0)); + radeon_ring_write(ring, (0xf << 16) | (VM_INVALIDATE_REQUEST >> 2)); + radeon_ring_write(ring, 1 << vm->id); +} + /* * RLC */ @@ -3059,6 +3090,10 @@ static void si_disable_interrupt_state(struct radeon_device *rdev) WREG32(CP_INT_CNTL_RING0, CNTX_BUSY_INT_ENABLE | CNTX_EMPTY_INT_ENABLE); WREG32(CP_INT_CNTL_RING1, 0); WREG32(CP_INT_CNTL_RING2, 0); + tmp = RREG32(DMA_CNTL + DMA0_REGISTER_OFFSET) & ~TRAP_ENABLE; + WREG32(DMA_CNTL + DMA0_REGISTER_OFFSET, tmp); + tmp = RREG32(DMA_CNTL + DMA1_REGISTER_OFFSET) & ~TRAP_ENABLE; + WREG32(DMA_CNTL + DMA1_REGISTER_OFFSET, tmp); WREG32(GRBM_INT_CNTL, 0); WREG32(INT_MASK + EVERGREEN_CRTC0_REGISTER_OFFSET, 0); WREG32(INT_MASK + EVERGREEN_CRTC1_REGISTER_OFFSET, 0); @@ -3178,6 +3213,7 @@ int si_irq_set(struct radeon_device *rdev) u32 hpd1, hpd2, hpd3, hpd4, hpd5, hpd6; u32 grbm_int_cntl = 0; u32 grph1 = 0, grph2 = 0, grph3 = 0, grph4 = 0, grph5 = 0, grph6 = 0; + u32 dma_cntl, dma_cntl1; if (!rdev->irq.installed) { WARN(1, "Can't enable IRQ/MSI because no handler is installed\n"); @@ -3198,6 +3234,9 @@ int si_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(DMA_CNTL + DMA0_REGISTER_OFFSET) & ~TRAP_ENABLE; + dma_cntl1 = RREG32(DMA_CNTL + DMA1_REGISTER_OFFSET) & ~TRAP_ENABLE; + /* enable CP interrupts on all rings */ if (atomic_read(&rdev->irq.ring_int[RADEON_RING_TYPE_GFX_INDEX])) { DRM_DEBUG("si_irq_set: sw int gfx\n"); @@ -3211,6 +3250,15 @@ int si_irq_set(struct radeon_device *rdev) DRM_DEBUG("si_irq_set: sw int cp2\n"); cp_int_cntl2 |= TIME_STAMP_INT_ENABLE; } + if (atomic_read(&rdev->irq.ring_int[R600_RING_TYPE_DMA_INDEX])) { + DRM_DEBUG("si_irq_set: sw int dma\n"); + dma_cntl |= TRAP_ENABLE; + } + + if (atomic_read(&rdev->irq.ring_int[CAYMAN_RING_TYPE_DMA1_INDEX])) { + DRM_DEBUG("si_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("si_irq_set: vblank 0\n"); @@ -3270,6 +3318,9 @@ int si_irq_set(struct radeon_device *rdev) WREG32(CP_INT_CNTL_RING1, cp_int_cntl1); WREG32(CP_INT_CNTL_RING2, cp_int_cntl2); + WREG32(DMA_CNTL + DMA0_REGISTER_OFFSET, dma_cntl); + WREG32(DMA_CNTL + DMA1_REGISTER_OFFSET, dma_cntl1); + WREG32(GRBM_INT_CNTL, grbm_int_cntl); WREG32(INT_MASK + EVERGREEN_CRTC0_REGISTER_OFFSET, crtc1); @@ -3728,9 +3779,17 @@ restart_ih: break; } break; + case 224: /* DMA trap event */ + DRM_DEBUG("IH: DMA trap\n"); + radeon_fence_process(rdev, R600_RING_TYPE_DMA_INDEX); + break; case 233: /* GUI IDLE */ DRM_DEBUG("IH: GUI idle\n"); break; + case 244: /* DMA trap event */ + DRM_DEBUG("IH: DMA1 trap\n"); + radeon_fence_process(rdev, CAYMAN_RING_TYPE_DMA1_INDEX); + break; default: DRM_DEBUG("Unhandled interrupt: %d %d\n", src_id, src_data); break; @@ -3754,6 +3813,80 @@ restart_ih: return IRQ_HANDLED; } +/** + * si_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 (SI). + * Used by the radeon ttm implementation to move pages if + * registered as the asic copy callback. + */ +int si_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, 0xfffff); + r = radeon_ring_lock(rdev, ring, num_loops * 5 + 11); + 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 > 0xFFFFF) + cur_size_in_bytes = 0xFFFFF; + size_in_bytes -= cur_size_in_bytes; + radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_COPY, 1, 0, 0, cur_size_in_bytes)); + radeon_ring_write(ring, dst_offset & 0xffffffff); + radeon_ring_write(ring, src_offset & 0xffffffff); + radeon_ring_write(ring, upper_32_bits(dst_offset) & 0xff); + radeon_ring_write(ring, upper_32_bits(src_offset) & 0xff); + 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; +} + /* * startup/shutdown callbacks */ @@ -3825,6 +3958,18 @@ static int si_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 = si_irq_init(rdev); if (r) { @@ -3855,6 +4000,22 @@ static int si_startup(struct radeon_device *rdev) 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, 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, 0)); + if (r) + return r; + r = si_cp_load_microcode(rdev); if (r) return r; @@ -3862,6 +4023,10 @@ static int si_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); @@ -3903,9 +4068,7 @@ int si_resume(struct radeon_device *rdev) int si_suspend(struct radeon_device *rdev) { si_cp_enable(rdev, false); - rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready = false; - rdev->ring[CAYMAN_RING_TYPE_CP1_INDEX].ready = false; - rdev->ring[CAYMAN_RING_TYPE_CP2_INDEX].ready = false; + cayman_dma_stop(rdev); si_irq_suspend(rdev); radeon_wb_disable(rdev); si_pcie_gart_disable(rdev); @@ -3983,6 +4146,14 @@ int si_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); @@ -3995,6 +4166,7 @@ int si_init(struct radeon_device *rdev) if (r) { dev_err(rdev->dev, "disabling GPU acceleration\n"); si_cp_fini(rdev); + cayman_dma_fini(rdev); si_irq_fini(rdev); si_rlc_fini(rdev); radeon_wb_fini(rdev); @@ -4023,6 +4195,7 @@ void si_fini(struct radeon_device *rdev) r600_blit_fini(rdev); #endif si_cp_fini(rdev); + cayman_dma_fini(rdev); si_irq_fini(rdev); si_rlc_fini(rdev); radeon_wb_fini(rdev); diff --git a/drivers/gpu/drm/radeon/sid.h b/drivers/gpu/drm/radeon/sid.h index 53b4d45..0acd327 100644 --- a/drivers/gpu/drm/radeon/sid.h +++ b/drivers/gpu/drm/radeon/sid.h @@ -936,4 +936,51 @@ #define PACKET3_WAIT_ON_AVAIL_BUFFER 0x8A #define PACKET3_SWITCH_BUFFER 0x8B +/* ASYNC DMA - first instance at 0xd000, second at 0xd800 */ +#define DMA0_REGISTER_OFFSET 0x0 /* not a register */ +#define DMA1_REGISTER_OFFSET 0x800 /* not a register */ + +#define DMA_RB_CNTL 0xd000 +# define DMA_RB_ENABLE (1 << 0) +# define DMA_RB_SIZE(x) ((x) << 1) /* log2 */ +# define DMA_RB_SWAP_ENABLE (1 << 9) /* 8IN32 */ +# define DMA_RPTR_WRITEBACK_ENABLE (1 << 12) +# define DMA_RPTR_WRITEBACK_SWAP_ENABLE (1 << 13) /* 8IN32 */ +# define DMA_RPTR_WRITEBACK_TIMER(x) ((x) << 16) /* log2 */ +#define DMA_RB_BASE 0xd004 +#define DMA_RB_RPTR 0xd008 +#define DMA_RB_WPTR 0xd00c + +#define DMA_RB_RPTR_ADDR_HI 0xd01c +#define DMA_RB_RPTR_ADDR_LO 0xd020 + +#define DMA_IB_CNTL 0xd024 +# define DMA_IB_ENABLE (1 << 0) +# define DMA_IB_SWAP_ENABLE (1 << 4) +#define DMA_IB_RPTR 0xd028 +#define DMA_CNTL 0xd02c +# 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 CTXEMPTY_INT_ENABLE (1 << 28) +#define DMA_TILING_CONFIG 0xd0b8 + +#define DMA_PACKET(cmd, b, t, s, n) ((((cmd) & 0xF) << 28) | \ + (((b) & 0x1) << 26) | \ + (((t) & 0x1) << 23) | \ + (((s) & 0x1) << 22) | \ + (((n) & 0xFFFFF) << 0)) +/* async DMA Packet types */ +#define DMA_PACKET_WRITE 0x2 +#define DMA_PACKET_COPY 0x3 +#define DMA_PACKET_INDIRECT_BUFFER 0x4 +#define DMA_PACKET_SEMAPHORE 0x5 +#define DMA_PACKET_FENCE 0x6 +#define DMA_PACKET_TRAP 0x7 +#define DMA_PACKET_SRBM_WRITE 0x9 +#define DMA_PACKET_CONSTANT_FILL 0xd +#define DMA_PACKET_NOP 0xf + #endif