amdgpu: add flag to support 32bit VA address v4
The AMDGPU_VA_RANGE_32_BIT flag is added to request VA range in the 32bit address space for amdgpu_va_range_alloc. The 32bit address space is reserved at initialization time, and managed with a separate VAMGR as part of the global VAMGR. And if no enough VA space available in range above 4GB, this reserved range can be used as fallback. v2: add comment for AMDGPU_VA_RANGE_32_BIT, and add vamgr to va_range v3: rebase to Emil's drm_private series v4: fix one warning Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com>main
parent
102ab6f004
commit
ffa305d0fc
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@ -1074,6 +1074,11 @@ int amdgpu_read_mm_registers(amdgpu_device_handle dev, unsigned dword_offset,
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unsigned count, uint32_t instance, uint32_t flags,
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uint32_t *values);
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/**
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* Flag to request VA address range in the 32bit address space
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*/
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#define AMDGPU_VA_RANGE_32_BIT 0x1
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/**
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* Allocate virtual address range
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*
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@ -43,6 +43,7 @@
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#include "amdgpu_drm.h"
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#include "amdgpu_internal.h"
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#include "util_hash_table.h"
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#include "util_math.h"
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#define PTR_TO_UINT(x) ((unsigned)((intptr_t)(x)))
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#define UINT_TO_PTR(x) ((void *)((intptr_t)(x)))
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@ -173,6 +174,7 @@ int amdgpu_device_initialize(int fd,
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int flag_auth = 0;
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int flag_authexist=0;
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uint32_t accel_working = 0;
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uint64_t start, max;
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*device_handle = NULL;
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@ -251,6 +253,19 @@ int amdgpu_device_initialize(int fd,
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dev->vamgr = amdgpu_vamgr_get_global(dev);
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max = MIN2(dev->dev_info.virtual_address_max, 0xffffffff);
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start = amdgpu_vamgr_find_va(dev->vamgr,
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max - dev->dev_info.virtual_address_offset,
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dev->dev_info.virtual_address_alignment, 0);
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if (start > 0xffffffff)
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goto free_va; /* shouldn't get here */
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dev->vamgr_32 = calloc(1, sizeof(struct amdgpu_bo_va_mgr));
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if (dev->vamgr_32 == NULL)
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goto free_va;
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amdgpu_vamgr_init(dev->vamgr_32, start, max,
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dev->dev_info.virtual_address_alignment);
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*major_version = dev->major_version;
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*minor_version = dev->minor_version;
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*device_handle = dev;
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@ -259,6 +274,11 @@ int amdgpu_device_initialize(int fd,
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return 0;
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free_va:
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r = -ENOMEM;
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amdgpu_vamgr_free_va(dev->vamgr, start,
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max - dev->dev_info.virtual_address_offset);
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cleanup:
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if (dev->fd >= 0)
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close(dev->fd);
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@ -66,6 +66,7 @@ struct amdgpu_va {
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uint64_t address;
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uint64_t size;
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enum amdgpu_gpu_va_range range;
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struct amdgpu_bo_va_mgr *vamgr;
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};
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struct amdgpu_device {
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@ -83,7 +84,10 @@ struct amdgpu_device {
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pthread_mutex_t bo_table_mutex;
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struct drm_amdgpu_info_device dev_info;
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struct amdgpu_gpu_info info;
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/** The global VA manager for the whole virtual address space */
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struct amdgpu_bo_va_mgr *vamgr;
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/** The VA manager for the 32bit address space */
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struct amdgpu_bo_va_mgr *vamgr_32;
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};
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struct amdgpu_bo {
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@ -128,6 +132,11 @@ drm_private void
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amdgpu_vamgr_reference(struct amdgpu_bo_va_mgr **dst,
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struct amdgpu_bo_va_mgr *src);
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drm_private void amdgpu_vamgr_init(struct amdgpu_bo_va_mgr *mgr, uint64_t start,
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uint64_t max, uint64_t alignment);
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drm_private void amdgpu_vamgr_deinit(struct amdgpu_bo_va_mgr *mgr);
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drm_private uint64_t
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amdgpu_vamgr_find_va(struct amdgpu_bo_va_mgr *mgr, uint64_t size,
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uint64_t alignment, uint64_t base_required);
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@ -46,7 +46,7 @@ int amdgpu_va_range_query(amdgpu_device_handle dev,
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return -EINVAL;
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}
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static void amdgpu_vamgr_init(struct amdgpu_bo_va_mgr *mgr, uint64_t start,
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drm_private void amdgpu_vamgr_init(struct amdgpu_bo_va_mgr *mgr, uint64_t start,
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uint64_t max, uint64_t alignment)
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{
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mgr->va_offset = start;
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@ -57,7 +57,7 @@ static void amdgpu_vamgr_init(struct amdgpu_bo_va_mgr *mgr, uint64_t start,
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pthread_mutex_init(&mgr->bo_va_mutex, NULL);
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}
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static void amdgpu_vamgr_deinit(struct amdgpu_bo_va_mgr *mgr)
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drm_private void amdgpu_vamgr_deinit(struct amdgpu_bo_va_mgr *mgr)
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{
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struct amdgpu_bo_va_hole *hole;
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LIST_FOR_EACH_ENTRY(hole, &mgr->va_holes, list) {
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@ -255,23 +255,39 @@ int amdgpu_va_range_alloc(amdgpu_device_handle dev,
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amdgpu_va_handle *va_range_handle,
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uint64_t flags)
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{
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va_base_alignment = MAX2(va_base_alignment, dev->vamgr->va_alignment);
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size = ALIGN(size, vamgr.va_alignment);
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struct amdgpu_bo_va_mgr *vamgr;
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*va_base_allocated = amdgpu_vamgr_find_va(dev->vamgr, size,
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if (flags & AMDGPU_VA_RANGE_32_BIT)
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vamgr = dev->vamgr_32;
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else
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vamgr = dev->vamgr;
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va_base_alignment = MAX2(va_base_alignment, vamgr->va_alignment);
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size = ALIGN(size, vamgr->va_alignment);
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*va_base_allocated = amdgpu_vamgr_find_va(vamgr, size,
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va_base_alignment, va_base_required);
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if (!(flags & AMDGPU_VA_RANGE_32_BIT) &&
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(*va_base_allocated == AMDGPU_INVALID_VA_ADDRESS)) {
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/* fallback to 32bit address */
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vamgr = dev->vamgr_32;
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*va_base_allocated = amdgpu_vamgr_find_va(vamgr, size,
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va_base_alignment, va_base_required);
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}
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if (*va_base_allocated != AMDGPU_INVALID_VA_ADDRESS) {
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struct amdgpu_va* va;
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va = calloc(1, sizeof(struct amdgpu_va));
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if(!va){
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amdgpu_vamgr_free_va(dev->vamgr, *va_base_allocated, size);
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amdgpu_vamgr_free_va(vamgr, *va_base_allocated, size);
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return -ENOMEM;
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}
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va->dev = dev;
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va->address = *va_base_allocated;
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va->size = size;
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va->range = va_range_type;
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va->vamgr = vamgr;
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*va_range_handle = va;
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} else {
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return -EINVAL;
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@ -284,7 +300,9 @@ int amdgpu_va_range_free(amdgpu_va_handle va_range_handle)
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{
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if(!va_range_handle || !va_range_handle->address)
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return 0;
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amdgpu_vamgr_free_va(va_range_handle->dev->vamgr, va_range_handle->address,
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amdgpu_vamgr_free_va(va_range_handle->vamgr,
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va_range_handle->address,
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va_range_handle->size);
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free(va_range_handle);
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return 0;
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