diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_seq64.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_seq64.c | 66 |
1 files changed, 34 insertions, 32 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_seq64.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_seq64.c index 7a6a67275404..e22cb2b5cd92 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_seq64.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_seq64.c @@ -36,13 +36,24 @@ */ /** + * amdgpu_seq64_get_va_base - Get the seq64 va base address + * + * @adev: amdgpu_device pointer + * + * Returns: + * va base address on success + */ +static inline u64 amdgpu_seq64_get_va_base(struct amdgpu_device *adev) +{ + return AMDGPU_VA_RESERVED_SEQ64_START(adev); +} + +/** * amdgpu_seq64_map - Map the seq64 memory to VM * * @adev: amdgpu_device pointer * @vm: vm pointer * @bo_va: bo_va pointer - * @seq64_addr: seq64 vaddr start address - * @size: seq64 pool size * * Map the seq64 memory to the given VM. * @@ -50,11 +61,11 @@ * 0 on success or a negative error code on failure */ int amdgpu_seq64_map(struct amdgpu_device *adev, struct amdgpu_vm *vm, - struct amdgpu_bo_va **bo_va, u64 seq64_addr, - uint32_t size) + struct amdgpu_bo_va **bo_va) { struct amdgpu_bo *bo; struct drm_exec exec; + u64 seq64_addr; int r; bo = adev->seq64.sbo; @@ -77,9 +88,9 @@ int amdgpu_seq64_map(struct amdgpu_device *adev, struct amdgpu_vm *vm, goto error; } - r = amdgpu_vm_bo_map(adev, *bo_va, seq64_addr, 0, size, - AMDGPU_PTE_READABLE | AMDGPU_PTE_WRITEABLE | - AMDGPU_PTE_EXECUTABLE); + seq64_addr = amdgpu_seq64_get_va_base(adev); + r = amdgpu_vm_bo_map(adev, *bo_va, seq64_addr, 0, AMDGPU_VA_RESERVED_SEQ64_SIZE, + AMDGPU_PTE_READABLE); if (r) { DRM_ERROR("failed to do bo_map on userq sem, err=%d\n", r); amdgpu_vm_bo_del(adev, *bo_va); @@ -144,31 +155,25 @@ error: * amdgpu_seq64_alloc - Allocate a 64 bit memory * * @adev: amdgpu_device pointer - * @gpu_addr: allocated gpu VA start address - * @cpu_addr: allocated cpu VA start address + * @va: VA to access the seq in process address space + * @cpu_addr: CPU address to access the seq * * Alloc a 64 bit memory from seq64 pool. * * Returns: * 0 on success or a negative error code on failure */ -int amdgpu_seq64_alloc(struct amdgpu_device *adev, u64 *gpu_addr, - u64 **cpu_addr) +int amdgpu_seq64_alloc(struct amdgpu_device *adev, u64 *va, u64 **cpu_addr) { unsigned long bit_pos; - u32 offset; bit_pos = find_first_zero_bit(adev->seq64.used, adev->seq64.num_sem); + if (bit_pos >= adev->seq64.num_sem) + return -ENOSPC; - if (bit_pos < adev->seq64.num_sem) { - __set_bit(bit_pos, adev->seq64.used); - offset = bit_pos << 6; /* convert to qw offset */ - } else { - return -EINVAL; - } - - *gpu_addr = offset + AMDGPU_SEQ64_VADDR_START; - *cpu_addr = offset + adev->seq64.cpu_base_addr; + __set_bit(bit_pos, adev->seq64.used); + *va = bit_pos * sizeof(u64) + amdgpu_seq64_get_va_base(adev); + *cpu_addr = bit_pos + adev->seq64.cpu_base_addr; return 0; } @@ -177,20 +182,17 @@ int amdgpu_seq64_alloc(struct amdgpu_device *adev, u64 *gpu_addr, * amdgpu_seq64_free - Free the given 64 bit memory * * @adev: amdgpu_device pointer - * @gpu_addr: gpu start address to be freed + * @va: gpu start address to be freed * * Free the given 64 bit memory from seq64 pool. - * */ -void amdgpu_seq64_free(struct amdgpu_device *adev, u64 gpu_addr) +void amdgpu_seq64_free(struct amdgpu_device *adev, u64 va) { - u32 offset; - - offset = gpu_addr - AMDGPU_SEQ64_VADDR_START; + unsigned long bit_pos; - offset >>= 6; - if (offset < adev->seq64.num_sem) - __clear_bit(offset, adev->seq64.used); + bit_pos = (va - amdgpu_seq64_get_va_base(adev)) / sizeof(u64); + if (bit_pos < adev->seq64.num_sem) + __clear_bit(bit_pos, adev->seq64.used); } /** @@ -229,7 +231,7 @@ int amdgpu_seq64_init(struct amdgpu_device *adev) * AMDGPU_MAX_SEQ64_SLOTS * sizeof(u64) * 8 = AMDGPU_MAX_SEQ64_SLOTS * 64bit slots */ - r = amdgpu_bo_create_kernel(adev, AMDGPU_SEQ64_SIZE, + r = amdgpu_bo_create_kernel(adev, AMDGPU_VA_RESERVED_SEQ64_SIZE, PAGE_SIZE, AMDGPU_GEM_DOMAIN_GTT, &adev->seq64.sbo, NULL, (void **)&adev->seq64.cpu_base_addr); @@ -238,7 +240,7 @@ int amdgpu_seq64_init(struct amdgpu_device *adev) return r; } - memset(adev->seq64.cpu_base_addr, 0, AMDGPU_SEQ64_SIZE); + memset(adev->seq64.cpu_base_addr, 0, AMDGPU_VA_RESERVED_SEQ64_SIZE); adev->seq64.num_sem = AMDGPU_MAX_SEQ64_SLOTS; memset(&adev->seq64.used, 0, sizeof(adev->seq64.used)); |