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Message-Id: <1347889993-24702-1-git-send-email-Dmitrii.Cherkasov@amd.com>
Date: Mon, 17 Sep 2012 17:53:11 +0400
From: Dmitry Cherkasov <dcherkassov@...il.com>
To: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Cc: Alex Deucher <alexander.deucher@....com>,
Christian König <deathsimple@...afone.de>,
Dmitry Cherkassov <Dmitrii.Cherkasov@....com>
Subject: [PATCH 1/2] drm/radeon: refactor set_page chipset interface v3
From: Christian König <deathsimple@...afone.de>
Cleanup the interface in preparation for hierarchical page tables.
v3: * add incr parameter to set_page for simple scattered PTs uptates
* added PDE-specific flags to r600_flags and radeon_drm.h
* removed superflous value masking with 0xffffffff
* removed superflous bo_va->valid checking
* changed R600_PTE_VALID to R600_ENTRY_VALID to handle PDE too
Signed-off-by: Christian König <deathsimple@...afone.de>
Signed-off-by: Dmitry Cherkassov <Dmitrii.Cherkasov@....com>
---
i've decided to unite R600_PDE_VALID and R600_PTE_VALID in R600_ENTRY_VALID.
not sure if that's the right name. any suggestions?
drivers/gpu/drm/radeon/ni.c | 46 +++++++++++++++++------------
drivers/gpu/drm/radeon/radeon.h | 13 ++++----
drivers/gpu/drm/radeon/radeon_asic.h | 6 ++--
drivers/gpu/drm/radeon/radeon_gart.c | 54 +++++++++++++---------------------
4 files changed, 56 insertions(+), 63 deletions(-)
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index b238216..cea8aea 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -1497,7 +1497,7 @@ void cayman_vm_fini(struct radeon_device *rdev)
{
}
-#define R600_PTE_VALID (1 << 0)
+#define R600_ENTRY_VALID (1 << 0)
#define R600_PTE_SYSTEM (1 << 1)
#define R600_PTE_SNOOPED (1 << 2)
#define R600_PTE_READABLE (1 << 5)
@@ -1506,8 +1506,7 @@ void cayman_vm_fini(struct radeon_device *rdev)
uint32_t cayman_vm_page_flags(struct radeon_device *rdev, uint32_t flags)
{
uint32_t r600_flags = 0;
-
- r600_flags |= (flags & RADEON_VM_PAGE_VALID) ? R600_PTE_VALID : 0;
+ r600_flags |= (flags & RADEON_VM_PAGE_VALID) ? R600_ENTRY_VALID : 0;
r600_flags |= (flags & RADEON_VM_PAGE_READABLE) ? R600_PTE_READABLE : 0;
r600_flags |= (flags & RADEON_VM_PAGE_WRITEABLE) ? R600_PTE_WRITEABLE : 0;
if (flags & RADEON_VM_PAGE_SYSTEM) {
@@ -1521,30 +1520,39 @@ 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
+ * @pe: addr of the page entry
+ * @addr: dst addr to write into pe
+ * @count: number of page entries to update
+ * @flags: access flags
*
* Update the page tables using the CP (cayman-si).
*/
-void cayman_vm_set_page(struct radeon_device *rdev, struct radeon_vm *vm,
- unsigned pfn, struct ttm_mem_reg *mem,
- unsigned npages, uint32_t flags)
+void cayman_vm_set_page(struct radeon_device *rdev, 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];
- uint64_t addr, pt = vm->pt_gpu_addr + pfn * 8;
+ uint32_t r600_flags = cayman_vm_page_flags(rdev, flags);
int i;
- addr = flags = cayman_vm_page_flags(rdev, flags);
-
- radeon_ring_write(ring, PACKET3(PACKET3_ME_WRITE, 1 + npages * 2));
- radeon_ring_write(ring, pt & 0xffffffff);
- radeon_ring_write(ring, (pt >> 32) & 0xff);
- for (i = 0; i < npages; ++i) {
- if (mem) {
- addr = radeon_vm_get_addr(rdev, mem, i);
- addr = addr & 0xFFFFFFFFFFFFF000ULL;
- addr |= flags;
+ radeon_ring_write(ring, PACKET3(PACKET3_ME_WRITE, 1 + count * 2));
+ radeon_ring_write(ring, pe & 0xffffffff);
+ radeon_ring_write(ring, (pe >> 32) & 0xff);
+ for (i = 0; i < count; ++i) {
+ uint64_t value = 0;
+ if (flags & RADEON_VM_PAGE_SYSTEM) {
+ value = radeon_vm_map_gart(rdev, addr);
+ value &= 0xFFFFFFFFFFFFF000ULL;
+ addr += RADEON_GPU_PAGE_SIZE;
+
+ } else if (flags & RADEON_VM_PAGE_VALID) {
+ value = addr;
+ addr += incr;
}
- radeon_ring_write(ring, addr & 0xffffffff);
- radeon_ring_write(ring, (addr >> 32) & 0xffffffff);
+
+ value |= r600_flags;
+ radeon_ring_write(ring, value);
+ radeon_ring_write(ring, (value >> 32));
}
}
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 4d67f0f..0eaa434 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1141,9 +1141,10 @@ struct radeon_asic {
void (*fini)(struct radeon_device *rdev);
u32 pt_ring_index;
- void (*set_page)(struct radeon_device *rdev, struct radeon_vm *vm,
- unsigned pfn, struct ttm_mem_reg *mem,
- unsigned npages, uint32_t flags);
+ void (*set_page)
+ (struct radeon_device *rdev, uint64_t pe,
+ uint64_t addr, unsigned count,
+ uint32_t incr, uint32_t flags);
} vm;
/* ring specific callbacks */
struct {
@@ -1755,7 +1756,7 @@ 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, v, pfn, mem, npages, flags) (rdev)->asic->vm.set_page((rdev), (v), (pfn), (mem), (npages), (flags))
+#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_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))
@@ -1840,9 +1841,7 @@ struct radeon_fence *radeon_vm_grab_id(struct radeon_device *rdev,
void radeon_vm_fence(struct radeon_device *rdev,
struct radeon_vm *vm,
struct radeon_fence *fence);
-u64 radeon_vm_get_addr(struct radeon_device *rdev,
- struct ttm_mem_reg *mem,
- unsigned pfn);
+uint64_t radeon_vm_map_gart(struct radeon_device *rdev, uint64_t addr);
int radeon_vm_bo_update_pte(struct radeon_device *rdev,
struct radeon_vm *vm,
struct radeon_bo *bo,
diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
index 29b3d05..19cf377 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/drivers/gpu/drm/radeon/radeon_asic.h
@@ -442,9 +442,9 @@ int cayman_vm_init(struct radeon_device *rdev);
void cayman_vm_fini(struct radeon_device *rdev);
void cayman_vm_flush(struct radeon_device *rdev, struct radeon_ib *ib);
uint32_t cayman_vm_page_flags(struct radeon_device *rdev, uint32_t flags);
-void cayman_vm_set_page(struct radeon_device *rdev, struct radeon_vm *vm,
- unsigned pfn, struct ttm_mem_reg *mem,
- unsigned npages, uint32_t flags);
+void cayman_vm_set_page(struct radeon_device *rdev, 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);
/* DCE6 - SI */
diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c
index 2f28ff3..bb9fc59 100644
--- a/drivers/gpu/drm/radeon/radeon_gart.c
+++ b/drivers/gpu/drm/radeon/radeon_gart.c
@@ -822,42 +822,26 @@ int radeon_vm_bo_set_addr(struct radeon_device *rdev,
}
/**
- * radeon_vm_get_addr - get the physical address of the page
+ * radeon_vm_map_gart - get the physical address of a gart page
*
* @rdev: radeon_device pointer
- * @mem: ttm mem
- * @pfn: pfn
+ * @addr: the unmapped addr
*
* Look up the physical address of the page that the pte resolves
* to (cayman+).
* Returns the physical address of the page.
*/
-u64 radeon_vm_get_addr(struct radeon_device *rdev,
- struct ttm_mem_reg *mem,
- unsigned pfn)
+uint64_t radeon_vm_map_gart(struct radeon_device *rdev, uint64_t addr)
{
- u64 addr = 0;
-
- switch (mem->mem_type) {
- case TTM_PL_VRAM:
- addr = (mem->start << PAGE_SHIFT);
- addr += pfn * RADEON_GPU_PAGE_SIZE;
- addr += rdev->vm_manager.vram_base_offset;
- break;
- case TTM_PL_TT:
- /* offset inside page table */
- addr = mem->start << PAGE_SHIFT;
- addr += pfn * RADEON_GPU_PAGE_SIZE;
- addr = addr >> PAGE_SHIFT;
- /* page table offset */
- addr = rdev->gart.pages_addr[addr];
- /* in case cpu page size != gpu page size*/
- addr += (pfn * RADEON_GPU_PAGE_SIZE) & (~PAGE_MASK);
- break;
- default:
- break;
- }
- return addr;
+ uint64_t result;
+
+ /* page table offset */
+ result = rdev->gart.pages_addr[addr >> PAGE_SHIFT];
+
+ /* in case cpu page size != gpu page size*/
+ result |= addr & (~PAGE_MASK);
+
+ return result;
}
/**
@@ -883,7 +867,7 @@ int radeon_vm_bo_update_pte(struct radeon_device *rdev,
struct radeon_semaphore *sem = NULL;
struct radeon_bo_va *bo_va;
unsigned ngpu_pages, ndw;
- uint64_t pfn;
+ uint64_t pfn, addr;
int r;
/* nothing to do if vm isn't bound */
@@ -908,21 +892,22 @@ int radeon_vm_bo_update_pte(struct radeon_device *rdev,
ngpu_pages = radeon_bo_ngpu_pages(bo);
bo_va->flags &= ~RADEON_VM_PAGE_VALID;
bo_va->flags &= ~RADEON_VM_PAGE_SYSTEM;
+ pfn = bo_va->soffset / RADEON_GPU_PAGE_SIZE;
if (mem) {
+ addr = mem->start << PAGE_SHIFT;
if (mem->mem_type != TTM_PL_SYSTEM) {
bo_va->flags |= RADEON_VM_PAGE_VALID;
bo_va->valid = true;
}
if (mem->mem_type == TTM_PL_TT) {
bo_va->flags |= RADEON_VM_PAGE_SYSTEM;
- }
- if (!bo_va->valid) {
- mem = NULL;
+ } else {
+ addr += rdev->vm_manager.vram_base_offset;
}
} else {
+ addr = 0;
bo_va->valid = false;
}
- pfn = bo_va->soffset / RADEON_GPU_PAGE_SIZE;
if (vm->fence && radeon_fence_signaled(vm->fence)) {
radeon_fence_unref(&vm->fence);
@@ -950,7 +935,8 @@ int radeon_vm_bo_update_pte(struct radeon_device *rdev,
radeon_fence_note_sync(vm->fence, ridx);
}
- radeon_asic_vm_set_page(rdev, vm, pfn, mem, ngpu_pages, bo_va->flags);
+ radeon_asic_vm_set_page(rdev, vm->pt_gpu_addr + pfn * 8, addr,
+ ngpu_pages, RADEON_GPU_PAGE_SIZE, bo_va->flags);
radeon_fence_unref(&vm->fence);
r = radeon_fence_emit(rdev, &vm->fence, ridx);
--
1.7.10.4
--
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