From 43f1214aa094e46efdfc0255d9601be0e5ea0f62 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 1 Feb 2013 17:32:42 +0100 Subject: [PATCH] drm/radeon: use IBs for VM page table updates v2 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit For very large page table updates, we can exceed the size of the ring. To avoid this, use an IB to perform the page table update. v2(ck): cleanup the IB infrastructure and the use it instead of filling the struct ourself. Signed-off-by: Alex Deucher Signed-off-by: Christian König --- drivers/gpu/drm/radeon/ni.c | 30 ++++++++++-------- drivers/gpu/drm/radeon/radeon.h | 7 +++-- drivers/gpu/drm/radeon/radeon_asic.h | 8 +++-- drivers/gpu/drm/radeon/radeon_cs.c | 19 +++--------- drivers/gpu/drm/radeon/radeon_gart.c | 60 +++++++++++++++--------------------- drivers/gpu/drm/radeon/radeon_ring.c | 19 ++++++++++++ drivers/gpu/drm/radeon/si.c | 52 ++++++++++++++++--------------- 7 files changed, 103 insertions(+), 92 deletions(-) diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c index 170bd03..7cead76 100644 --- a/drivers/gpu/drm/radeon/ni.c +++ b/drivers/gpu/drm/radeon/ni.c @@ -1946,19 +1946,21 @@ uint32_t cayman_vm_page_flags(struct radeon_device *rdev, uint32_t flags) * cayman_vm_set_page - update the page tables using the CP * * @rdev: radeon_device pointer + * @ib: indirect buffer to fill with commands * @pe: addr of the page entry * @addr: dst addr to write into pe * @count: number of page entries to update * @incr: increase next addr by incr bytes * @flags: access flags * - * Update the page tables using the CP (cayman-si). + * Update the page tables using the CP (cayman/TN). */ -void cayman_vm_set_page(struct radeon_device *rdev, uint64_t pe, +void cayman_vm_set_page(struct radeon_device *rdev, + struct radeon_ib *ib, + uint64_t pe, uint64_t addr, unsigned count, uint32_t incr, uint32_t flags) { - struct radeon_ring *ring = &rdev->ring[rdev->asic->vm.pt_ring_index]; uint32_t r600_flags = cayman_vm_page_flags(rdev, flags); uint64_t value; unsigned ndw; @@ -1969,9 +1971,9 @@ void cayman_vm_set_page(struct radeon_device *rdev, uint64_t pe, if (ndw > 0x3FFF) ndw = 0x3FFF; - radeon_ring_write(ring, PACKET3(PACKET3_ME_WRITE, ndw)); - radeon_ring_write(ring, pe); - radeon_ring_write(ring, upper_32_bits(pe) & 0xff); + ib->ptr[ib->length_dw++] = PACKET3(PACKET3_ME_WRITE, ndw); + ib->ptr[ib->length_dw++] = pe; + ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff; for (; ndw > 1; ndw -= 2, --count, pe += 8) { if (flags & RADEON_VM_PAGE_SYSTEM) { value = radeon_vm_map_gart(rdev, addr); @@ -1983,8 +1985,8 @@ void cayman_vm_set_page(struct radeon_device *rdev, uint64_t pe, } addr += incr; value |= r600_flags; - radeon_ring_write(ring, value); - radeon_ring_write(ring, upper_32_bits(value)); + ib->ptr[ib->length_dw++] = value; + ib->ptr[ib->length_dw++] = upper_32_bits(value); } } } else { @@ -1994,9 +1996,9 @@ void cayman_vm_set_page(struct radeon_device *rdev, uint64_t pe, ndw = 0xFFFFE; /* for non-physically contiguous pages (system) */ - radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_WRITE, 0, 0, ndw)); - radeon_ring_write(ring, pe); - radeon_ring_write(ring, upper_32_bits(pe) & 0xff); + ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_WRITE, 0, 0, ndw); + ib->ptr[ib->length_dw++] = pe; + ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff; for (; ndw > 0; ndw -= 2, --count, pe += 8) { if (flags & RADEON_VM_PAGE_SYSTEM) { value = radeon_vm_map_gart(rdev, addr); @@ -2008,10 +2010,12 @@ void cayman_vm_set_page(struct radeon_device *rdev, uint64_t pe, } addr += incr; value |= r600_flags; - radeon_ring_write(ring, value); - radeon_ring_write(ring, upper_32_bits(value)); + ib->ptr[ib->length_dw++] = value; + ib->ptr[ib->length_dw++] = upper_32_bits(value); } } + while (ib->length_dw & 0x7) + ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0); } } diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 6539d6c..307d681 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -780,6 +780,7 @@ int radeon_ib_get(struct radeon_device *rdev, int ring, struct radeon_ib *ib, struct radeon_vm *vm, unsigned size); void radeon_ib_free(struct radeon_device *rdev, struct radeon_ib *ib); +void radeon_ib_sync_to(struct radeon_ib *ib, struct radeon_fence *fence); int radeon_ib_schedule(struct radeon_device *rdev, struct radeon_ib *ib, struct radeon_ib *const_ib); int radeon_ib_pool_init(struct radeon_device *rdev); @@ -1188,7 +1189,9 @@ struct radeon_asic { void (*fini)(struct radeon_device *rdev); u32 pt_ring_index; - void (*set_page)(struct radeon_device *rdev, uint64_t pe, + void (*set_page)(struct radeon_device *rdev, + struct radeon_ib *ib, + uint64_t pe, uint64_t addr, unsigned count, uint32_t incr, uint32_t flags); } vm; @@ -1810,7 +1813,7 @@ void radeon_ring_write(struct radeon_ring *ring, uint32_t v); #define radeon_gart_set_page(rdev, i, p) (rdev)->asic->gart.set_page((rdev), (i), (p)) #define radeon_asic_vm_init(rdev) (rdev)->asic->vm.init((rdev)) #define radeon_asic_vm_fini(rdev) (rdev)->asic->vm.fini((rdev)) -#define radeon_asic_vm_set_page(rdev, pe, addr, count, incr, flags) ((rdev)->asic->vm.set_page((rdev), (pe), (addr), (count), (incr), (flags))) +#define radeon_asic_vm_set_page(rdev, ib, pe, addr, count, incr, flags) ((rdev)->asic->vm.set_page((rdev), (ib), (pe), (addr), (count), (incr), (flags))) #define radeon_ring_start(rdev, r, cp) (rdev)->asic->ring[(r)].ring_start((rdev), (cp)) #define radeon_ring_test(rdev, r, cp) (rdev)->asic->ring[(r)].ring_test((rdev), (cp)) #define radeon_ib_test(rdev, r, cp) (rdev)->asic->ring[(r)].ib_test((rdev), (cp)) diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h index e429e25..f4134a8 100644 --- a/drivers/gpu/drm/radeon/radeon_asic.h +++ b/drivers/gpu/drm/radeon/radeon_asic.h @@ -474,7 +474,9 @@ int cayman_vm_init(struct radeon_device *rdev); void cayman_vm_fini(struct radeon_device *rdev); void cayman_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm); uint32_t cayman_vm_page_flags(struct radeon_device *rdev, uint32_t flags); -void cayman_vm_set_page(struct radeon_device *rdev, uint64_t pe, +void cayman_vm_set_page(struct radeon_device *rdev, + struct radeon_ib *ib, + uint64_t pe, uint64_t addr, unsigned count, uint32_t incr, uint32_t flags); int evergreen_ib_parse(struct radeon_device *rdev, struct radeon_ib *ib); @@ -506,7 +508,9 @@ int si_irq_set(struct radeon_device *rdev); int si_irq_process(struct radeon_device *rdev); int si_vm_init(struct radeon_device *rdev); void si_vm_fini(struct radeon_device *rdev); -void si_vm_set_page(struct radeon_device *rdev, uint64_t pe, +void si_vm_set_page(struct radeon_device *rdev, + struct radeon_ib *ib, + uint64_t pe, uint64_t addr, unsigned count, uint32_t incr, uint32_t flags); void si_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm); diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c index 1d214b6..70d3824 100644 --- a/drivers/gpu/drm/radeon/radeon_cs.c +++ b/drivers/gpu/drm/radeon/radeon_cs.c @@ -125,18 +125,6 @@ static int radeon_cs_get_ring(struct radeon_cs_parser *p, u32 ring, s32 priority return 0; } -static void radeon_cs_sync_to(struct radeon_cs_parser *p, - struct radeon_fence *fence) -{ - struct radeon_fence *other; - - if (!fence) - return; - - other = p->ib.sync_to[fence->ring]; - p->ib.sync_to[fence->ring] = radeon_fence_later(fence, other); -} - static void radeon_cs_sync_rings(struct radeon_cs_parser *p) { int i; @@ -145,7 +133,7 @@ static void radeon_cs_sync_rings(struct radeon_cs_parser *p) if (!p->relocs[i].robj) continue; - radeon_cs_sync_to(p, p->relocs[i].robj->tbo.sync_obj); + radeon_ib_sync_to(&p->ib, p->relocs[i].robj->tbo.sync_obj); } } @@ -472,8 +460,9 @@ static int radeon_cs_ib_vm_chunk(struct radeon_device *rdev, goto out; } radeon_cs_sync_rings(parser); - radeon_cs_sync_to(parser, vm->fence); - radeon_cs_sync_to(parser, radeon_vm_grab_id(rdev, vm, parser->ring)); + radeon_ib_sync_to(&parser->ib, vm->fence); + radeon_ib_sync_to(&parser->ib, radeon_vm_grab_id( + rdev, vm, parser->ring)); if ((rdev->family >= CHIP_TAHITI) && (parser->chunk_const_ib_idx != -1)) { diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c index 6e24f84..2c1341f 100644 --- a/drivers/gpu/drm/radeon/radeon_gart.c +++ b/drivers/gpu/drm/radeon/radeon_gart.c @@ -929,6 +929,7 @@ uint64_t radeon_vm_map_gart(struct radeon_device *rdev, uint64_t addr) */ static int radeon_vm_update_pdes(struct radeon_device *rdev, struct radeon_vm *vm, + struct radeon_ib *ib, uint64_t start, uint64_t end) { static const uint32_t incr = RADEON_VM_PTE_COUNT * 8; @@ -971,7 +972,7 @@ retry: ((last_pt + incr * count) != pt)) { if (count) { - radeon_asic_vm_set_page(rdev, last_pde, + radeon_asic_vm_set_page(rdev, ib, last_pde, last_pt, count, incr, RADEON_VM_PAGE_VALID); } @@ -985,7 +986,7 @@ retry: } if (count) { - radeon_asic_vm_set_page(rdev, last_pde, last_pt, count, + radeon_asic_vm_set_page(rdev, ib, last_pde, last_pt, count, incr, RADEON_VM_PAGE_VALID); } @@ -1009,6 +1010,7 @@ retry: */ static void radeon_vm_update_ptes(struct radeon_device *rdev, struct radeon_vm *vm, + struct radeon_ib *ib, uint64_t start, uint64_t end, uint64_t dst, uint32_t flags) { @@ -1038,7 +1040,7 @@ static void radeon_vm_update_ptes(struct radeon_device *rdev, if ((last_pte + 8 * count) != pte) { if (count) { - radeon_asic_vm_set_page(rdev, last_pte, + radeon_asic_vm_set_page(rdev, ib, last_pte, last_dst, count, RADEON_GPU_PAGE_SIZE, flags); @@ -1056,7 +1058,8 @@ static void radeon_vm_update_ptes(struct radeon_device *rdev, } if (count) { - radeon_asic_vm_set_page(rdev, last_pte, last_dst, count, + radeon_asic_vm_set_page(rdev, ib, last_pte, + last_dst, count, RADEON_GPU_PAGE_SIZE, flags); } } @@ -1080,8 +1083,7 @@ int radeon_vm_bo_update_pte(struct radeon_device *rdev, struct ttm_mem_reg *mem) { unsigned ridx = rdev->asic->vm.pt_ring_index; - struct radeon_ring *ring = &rdev->ring[ridx]; - struct radeon_semaphore *sem = NULL; + struct radeon_ib ib; struct radeon_bo_va *bo_va; unsigned nptes, npdes, ndw; uint64_t addr; @@ -1124,25 +1126,13 @@ int radeon_vm_bo_update_pte(struct radeon_device *rdev, bo_va->valid = false; } - if (vm->fence && radeon_fence_signaled(vm->fence)) { - radeon_fence_unref(&vm->fence); - } - - if (vm->fence && vm->fence->ring != ridx) { - r = radeon_semaphore_create(rdev, &sem); - if (r) { - return r; - } - } - nptes = radeon_bo_ngpu_pages(bo); /* assume two extra pdes in case the mapping overlaps the borders */ npdes = (nptes >> RADEON_VM_BLOCK_SIZE) + 2; - /* estimate number of dw needed */ - /* semaphore, fence and padding */ - ndw = 32; + /* padding, etc. */ + ndw = 64; if (RADEON_VM_BLOCK_SIZE > 11) /* reserve space for one header for every 2k dwords */ @@ -1161,33 +1151,31 @@ int radeon_vm_bo_update_pte(struct radeon_device *rdev, /* reserve space for pde addresses */ ndw += npdes * 2; - r = radeon_ring_lock(rdev, ring, ndw); - if (r) { - return r; - } + /* update too big for an IB */ + if (ndw > 0xfffff) + return -ENOMEM; - if (sem && radeon_fence_need_sync(vm->fence, ridx)) { - radeon_semaphore_sync_rings(rdev, sem, vm->fence->ring, ridx); - radeon_fence_note_sync(vm->fence, ridx); - } + r = radeon_ib_get(rdev, ridx, &ib, NULL, ndw * 4); + ib.length_dw = 0; - r = radeon_vm_update_pdes(rdev, vm, bo_va->soffset, bo_va->eoffset); + r = radeon_vm_update_pdes(rdev, vm, &ib, bo_va->soffset, bo_va->eoffset); if (r) { - radeon_ring_unlock_undo(rdev, ring); + radeon_ib_free(rdev, &ib); return r; } - radeon_vm_update_ptes(rdev, vm, bo_va->soffset, bo_va->eoffset, + radeon_vm_update_ptes(rdev, vm, &ib, bo_va->soffset, bo_va->eoffset, addr, bo_va->flags); - radeon_fence_unref(&vm->fence); - r = radeon_fence_emit(rdev, &vm->fence, ridx); + radeon_ib_sync_to(&ib, vm->fence); + r = radeon_ib_schedule(rdev, &ib, NULL); if (r) { - radeon_ring_unlock_undo(rdev, ring); + radeon_ib_free(rdev, &ib); return r; } - radeon_ring_unlock_commit(rdev, ring); - radeon_semaphore_free(rdev, &sem, vm->fence); + radeon_fence_unref(&vm->fence); + vm->fence = radeon_fence_ref(ib.fence); + radeon_ib_free(rdev, &ib); radeon_fence_unref(&vm->last_flush); return 0; diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c index cd72062..8d58e26 100644 --- a/drivers/gpu/drm/radeon/radeon_ring.c +++ b/drivers/gpu/drm/radeon/radeon_ring.c @@ -109,6 +109,25 @@ void radeon_ib_free(struct radeon_device *rdev, struct radeon_ib *ib) } /** + * radeon_ib_sync_to - sync to fence before executing the IB + * + * @ib: IB object to add fence to + * @fence: fence to sync to + * + * Sync to the fence before executing the IB + */ +void radeon_ib_sync_to(struct radeon_ib *ib, struct radeon_fence *fence) +{ + struct radeon_fence *other; + + if (!fence) + return; + + other = ib->sync_to[fence->ring]; + ib->sync_to[fence->ring] = radeon_fence_later(fence, other); +} + +/** * radeon_ib_schedule - schedule an IB (Indirect Buffer) on the ring * * @rdev: radeon_device pointer diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index cd83bc5..a910cb9 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -3043,19 +3043,21 @@ void si_vm_fini(struct radeon_device *rdev) * si_vm_set_page - update the page tables using the CP * * @rdev: radeon_device pointer + * @ib: indirect buffer to fill with commands * @pe: addr of the page entry * @addr: dst addr to write into pe * @count: number of page entries to update * @incr: increase next addr by incr bytes * @flags: access flags * - * Update the page tables using the CP (cayman-si). + * Update the page tables using the CP (SI). */ -void si_vm_set_page(struct radeon_device *rdev, uint64_t pe, +void si_vm_set_page(struct radeon_device *rdev, + struct radeon_ib *ib, + uint64_t pe, uint64_t addr, unsigned count, uint32_t incr, uint32_t flags) { - struct radeon_ring *ring = &rdev->ring[rdev->asic->vm.pt_ring_index]; uint32_t r600_flags = cayman_vm_page_flags(rdev, flags); uint64_t value; unsigned ndw; @@ -3066,11 +3068,11 @@ void si_vm_set_page(struct radeon_device *rdev, uint64_t pe, if (ndw > 0x3FFE) ndw = 0x3FFE; - radeon_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, ndw)); - radeon_ring_write(ring, (WRITE_DATA_ENGINE_SEL(0) | - WRITE_DATA_DST_SEL(1))); - radeon_ring_write(ring, pe); - radeon_ring_write(ring, upper_32_bits(pe)); + ib->ptr[ib->length_dw++] = PACKET3(PACKET3_WRITE_DATA, ndw); + ib->ptr[ib->length_dw++] = (WRITE_DATA_ENGINE_SEL(0) | + WRITE_DATA_DST_SEL(1)); + ib->ptr[ib->length_dw++] = pe; + ib->ptr[ib->length_dw++] = upper_32_bits(pe); for (; ndw > 2; ndw -= 2, --count, pe += 8) { if (flags & RADEON_VM_PAGE_SYSTEM) { value = radeon_vm_map_gart(rdev, addr); @@ -3082,8 +3084,8 @@ void si_vm_set_page(struct radeon_device *rdev, uint64_t pe, } addr += incr; value |= r600_flags; - radeon_ring_write(ring, value); - radeon_ring_write(ring, upper_32_bits(value)); + ib->ptr[ib->length_dw++] = value; + ib->ptr[ib->length_dw++] = upper_32_bits(value); } } } else { @@ -3095,9 +3097,9 @@ void si_vm_set_page(struct radeon_device *rdev, uint64_t pe, ndw = 0xFFFFE; /* for non-physically contiguous pages (system) */ - radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, ndw)); - radeon_ring_write(ring, pe); - radeon_ring_write(ring, upper_32_bits(pe) & 0xff); + ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, ndw); + ib->ptr[ib->length_dw++] = pe; + ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff; for (; ndw > 0; ndw -= 2, --count, pe += 8) { if (flags & RADEON_VM_PAGE_SYSTEM) { value = radeon_vm_map_gart(rdev, addr); @@ -3109,8 +3111,8 @@ void si_vm_set_page(struct radeon_device *rdev, uint64_t pe, } addr += incr; value |= r600_flags; - radeon_ring_write(ring, value); - radeon_ring_write(ring, upper_32_bits(value)); + ib->ptr[ib->length_dw++] = value; + ib->ptr[ib->length_dw++] = upper_32_bits(value); } } } else { @@ -3124,20 +3126,22 @@ void si_vm_set_page(struct radeon_device *rdev, uint64_t pe, else value = 0; /* for physically contiguous pages (vram) */ - radeon_ring_write(ring, DMA_PTE_PDE_PACKET(ndw)); - radeon_ring_write(ring, pe); /* dst addr */ - radeon_ring_write(ring, upper_32_bits(pe) & 0xff); - radeon_ring_write(ring, r600_flags); /* mask */ - radeon_ring_write(ring, 0); - radeon_ring_write(ring, value); /* value */ - radeon_ring_write(ring, upper_32_bits(value)); - radeon_ring_write(ring, incr); /* increment size */ - radeon_ring_write(ring, 0); + ib->ptr[ib->length_dw++] = DMA_PTE_PDE_PACKET(ndw); + ib->ptr[ib->length_dw++] = pe; /* dst addr */ + ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff; + ib->ptr[ib->length_dw++] = r600_flags; /* mask */ + ib->ptr[ib->length_dw++] = 0; + ib->ptr[ib->length_dw++] = value; /* value */ + ib->ptr[ib->length_dw++] = upper_32_bits(value); + ib->ptr[ib->length_dw++] = incr; /* increment size */ + ib->ptr[ib->length_dw++] = 0; pe += ndw * 4; addr += (ndw / 2) * incr; count -= ndw / 2; } } + while (ib->length_dw & 0x7) + ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0); } } -- 2.7.4