return r;
}
-/**
+/*
* amdgpu_move_blit - Copy an entire buffer to another buffer
*
* This is a helper called by amdgpu_bo_move() and amdgpu_move_vram_ram() to
return r;
}
-/**
+/*
* amdgpu_mem_visible - Check that memory can be accessed by ttm_bo_move_memcpy
*
* Called by amdgpu_bo_move()
<= adev->gmc.visible_vram_size;
}
-/**
+/*
* amdgpu_bo_move - Move a buffer object to a new memory location
*
* Called by ttm_bo_handle_move_mem()
return r;
}
-/**
+/*
* amdgpu_ttm_io_mem_reserve - Reserve a block of memory during a fault
*
* Called by ttm_mem_io_reserve() ultimately via ttm_bo_vm_fault()
};
#ifdef CONFIG_DRM_AMDGPU_USERPTR
-/**
+/*
* amdgpu_ttm_tt_get_user_pages - get device accessible pages that back user
* memory and start HMM tracking CPU page table update
*
return r;
}
-/**
+/*
* amdgpu_ttm_tt_userptr_range_done - stop HMM track the CPU page table change
* Check if the pages backing this ttm range have been invalidated
*
}
#endif
-/**
+/*
* amdgpu_ttm_tt_set_user_pages - Copy pages in, putting old pages as necessary.
*
* Called by amdgpu_cs_list_validate(). This creates the page list
ttm->pages[i] = pages ? pages[i] : NULL;
}
-/**
+/*
* amdgpu_ttm_tt_pin_userptr - prepare the sg table with the user pages
*
* Called by amdgpu_ttm_backend_bind()
return r;
}
-/**
+/*
* amdgpu_ttm_tt_unpin_userptr - Unpin and unmap userptr pages
*/
static void amdgpu_ttm_tt_unpin_userptr(struct ttm_bo_device *bdev,
return r;
}
-/**
+/*
* amdgpu_ttm_backend_bind - Bind GTT memory
*
* Called by ttm_tt_bind() on behalf of ttm_bo_handle_move_mem().
return r;
}
-/**
+/*
* amdgpu_ttm_alloc_gart - Make sure buffer object is accessible either
* through AGP or GART aperture.
*
return 0;
}
-/**
+/*
* amdgpu_ttm_recover_gart - Rebind GTT pages
*
* Called by amdgpu_gtt_mgr_recover() from amdgpu_device_reset() to
return r;
}
-/**
+/*
* amdgpu_ttm_backend_unbind - Unbind GTT mapped pages
*
* Called by ttm_tt_unbind() on behalf of ttm_bo_move_ttm() and
return >t->ttm;
}
-/**
+/*
* amdgpu_ttm_tt_populate - Map GTT pages visible to the device
*
* Map the pages of a ttm_tt object to an address space visible
return ttm_pool_alloc(&adev->mman.bdev.pool, ttm, ctx);
}
-/**
+/*
* amdgpu_ttm_tt_unpopulate - unmap GTT pages and unpopulate page arrays
*
* Unmaps pages of a ttm_tt object from the device address space and
return 0;
}
-/**
+/*
* amdgpu_ttm_tt_get_usermm - Return memory manager for ttm_tt object
*/
struct mm_struct *amdgpu_ttm_tt_get_usermm(struct ttm_tt *ttm)
return gtt->usertask->mm;
}
-/**
+/*
* amdgpu_ttm_tt_affect_userptr - Determine if a ttm_tt object lays inside an
* address range for the current task.
*
return true;
}
-/**
+/*
* amdgpu_ttm_tt_is_userptr - Have the pages backing by userptr?
*/
bool amdgpu_ttm_tt_is_userptr(struct ttm_tt *ttm)
return true;
}
-/**
+/*
* amdgpu_ttm_tt_is_readonly - Is the ttm_tt object read only?
*/
bool amdgpu_ttm_tt_is_readonly(struct ttm_tt *ttm)
/**
* amdgpu_ttm_tt_pte_flags - Compute PTE flags for ttm_tt object
*
+ * @adev: amdgpu_device pointer
* @ttm: The ttm_tt object to compute the flags for
* @mem: The memory registry backing this ttm_tt object
-
+ *
* Figure out the flags to use for a VM PTE (Page Table Entry).
*/
uint64_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
return flags;
}
-/**
+/*
* amdgpu_ttm_bo_eviction_valuable - Check to see if we can evict a buffer
* object.
*
return 0;
}
-/**
+/*
* amdgpu_ttm_init - Init the memory management (ttm) as well as various
* gtt/vram related fields.
*
return 0;
}
-/**
+/*
* amdgpu_ttm_late_init - Handle any late initialization for amdgpu_ttm
*/
void amdgpu_ttm_late_init(struct amdgpu_device *adev)
amdgpu_bo_free_kernel(&adev->mman.stolen_extended_memory, NULL, NULL);
}
-/**
+/*
* amdgpu_ttm_fini - De-initialize the TTM memory pools
*/
void amdgpu_ttm_fini(struct amdgpu_device *adev)
{"ttm_page_pool", amdgpu_ttm_pool_debugfs, 0, NULL},
};
-/**
+/*
* amdgpu_ttm_vram_read - Linear read access to VRAM
*
* Accesses VRAM via MMIO for debugging purposes.
return result;
}
-/**
+/*
* amdgpu_ttm_vram_write - Linear write access to VRAM
*
* Accesses VRAM via MMIO for debugging purposes.
#ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS
-/**
+/*
* amdgpu_ttm_gtt_read - Linear read access to GTT memory
*/
static ssize_t amdgpu_ttm_gtt_read(struct file *f, char __user *buf,
#endif
-/**
+/*
* amdgpu_iomem_read - Virtual read access to GPU mapped memory
*
* This function is used to read memory that has been mapped to the
return result;
}
-/**
+/*
* amdgpu_iomem_write - Virtual write access to GPU mapped memory
*
* This function is used to write memory that has been mapped to the
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