/*
 * Copyright 2008 Advanced Micro Devices, Inc.
 * Copyright 2008 Red Hat Inc.
 * Copyright 2009 Jerome Glisse.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: Dave Airlie
 *          Alex Deucher
 *          Jerome Glisse
 */
#ifndef __AMDGPU_OBJECT_H__
#define __AMDGPU_OBJECT_H__

#include <drm/amdgpu_drm.h>
#include "amdgpu.h"

#define AMDGPU_BO_INVALID_OFFSET        LONG_MAX
#define AMDGPU_BO_MAX_PLACEMENTS        3

struct amdgpu_bo_param {
        unsigned long                   size;
        int                             byte_align;
        u32                             domain;
        u32                             preferred_domain;
        u64                             flags;
        enum ttm_bo_type                type;
        struct reservation_object       *resv;
};

/* bo virtual addresses in a vm */
struct amdgpu_bo_va_mapping {
        struct amdgpu_bo_va             *bo_va;
        struct list_head                list;
        struct rb_node                  rb;
        uint64_t                        start;
        uint64_t                        last;
        uint64_t                        __subtree_last;
        uint64_t                        offset;
        uint64_t                        flags;
};

/* User space allocated BO in a VM */
struct amdgpu_bo_va {
        struct amdgpu_vm_bo_base        base;

        /* protected by bo being reserved */
        unsigned                        ref_count;

        /* all other members protected by the VM PD being reserved */
        struct dma_fence                *last_pt_update;

        /* mappings for this bo_va */
        struct list_head                invalids;
        struct list_head                valids;

        /* If the mappings are cleared or filled */
        bool                            cleared;
};

struct amdgpu_bo {
        /* Protected by tbo.reserved */
        u32                             preferred_domains;
        u32                             allowed_domains;
        struct ttm_place                placements[AMDGPU_BO_MAX_PLACEMENTS];
        struct ttm_placement            placement;
        struct ttm_buffer_object        tbo;
        struct ttm_bo_kmap_obj          kmap;
        u64                             flags;
        unsigned                        pin_count;
        u64                             tiling_flags;
        u64                             metadata_flags;
        void                            *metadata;
        u32                             metadata_size;
        unsigned                        prime_shared_count;
        /* per VM structure for page tables and with virtual addresses */
        struct amdgpu_vm_bo_base        *vm_bo;
        /* Constant after initialization */
        struct drm_gem_object           gem_base;
        struct amdgpu_bo                *parent;
        struct amdgpu_bo                *shadow;

        struct ttm_bo_kmap_obj          dma_buf_vmap;
        struct amdgpu_mn                *mn;

        union {
                struct list_head        mn_list;
                struct list_head        shadow_list;
        };

        struct kgd_mem                  *kfd_bo;
};

static inline struct amdgpu_bo *ttm_to_amdgpu_bo(struct ttm_buffer_object *tbo)
{
        return container_of(tbo, struct amdgpu_bo, tbo);
}

/**
 * amdgpu_mem_type_to_domain - return domain corresponding to mem_type
 * @mem_type:   ttm memory type
 *
 * Returns corresponding domain of the ttm mem_type
 */
static inline unsigned amdgpu_mem_type_to_domain(u32 mem_type)
{
        switch (mem_type) {
        case TTM_PL_VRAM:
                return AMDGPU_GEM_DOMAIN_VRAM;
        case TTM_PL_TT:
                return AMDGPU_GEM_DOMAIN_GTT;
        case TTM_PL_SYSTEM:
                return AMDGPU_GEM_DOMAIN_CPU;
        case AMDGPU_PL_GDS:
                return AMDGPU_GEM_DOMAIN_GDS;
        case AMDGPU_PL_GWS:
                return AMDGPU_GEM_DOMAIN_GWS;
        case AMDGPU_PL_OA:
                return AMDGPU_GEM_DOMAIN_OA;
        default:
                break;
        }
        return 0;
}

/**
 * amdgpu_bo_reserve - reserve bo
 * @bo:         bo structure
 * @no_intr:    don't return -ERESTARTSYS on pending signal
 *
 * Returns:
 * -ERESTARTSYS: A wait for the buffer to become unreserved was interrupted by
 * a signal. Release all buffer reservations and return to user-space.
 */
static inline int amdgpu_bo_reserve(struct amdgpu_bo *bo, bool no_intr)
{
        struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
        int r;

        r = ttm_bo_reserve(&bo->tbo, !no_intr, false, NULL);
        if (unlikely(r != 0)) {
                if (r != -ERESTARTSYS)
                        dev_err(adev->dev, "%p reserve failed\n", bo);
                return r;
        }
        return 0;
}

static inline void amdgpu_bo_unreserve(struct amdgpu_bo *bo)
{
        ttm_bo_unreserve(&bo->tbo);
}

static inline unsigned long amdgpu_bo_size(struct amdgpu_bo *bo)
{
        return bo->tbo.num_pages << PAGE_SHIFT;
}

static inline unsigned amdgpu_bo_ngpu_pages(struct amdgpu_bo *bo)
{
        return (bo->tbo.num_pages << PAGE_SHIFT) / AMDGPU_GPU_PAGE_SIZE;
}

static inline unsigned amdgpu_bo_gpu_page_alignment(struct amdgpu_bo *bo)
{
        return (bo->tbo.mem.page_alignment << PAGE_SHIFT) / AMDGPU_GPU_PAGE_SIZE;
}

/**
 * amdgpu_bo_mmap_offset - return mmap offset of bo
 * @bo: amdgpu object for which we query the offset
 *
 * Returns mmap offset of the object.
 */
static inline u64 amdgpu_bo_mmap_offset(struct amdgpu_bo *bo)
{
        return drm_vma_node_offset_addr(&bo->tbo.vma_node);
}

/**
 * amdgpu_bo_in_cpu_visible_vram - check if BO is (partly) in visible VRAM
 */
static inline bool amdgpu_bo_in_cpu_visible_vram(struct amdgpu_bo *bo)
{
        struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
        unsigned fpfn = adev->gmc.visible_vram_size >> PAGE_SHIFT;
        struct drm_mm_node *node = bo->tbo.mem.mm_node;
        unsigned long pages_left;

        if (bo->tbo.mem.mem_type != TTM_PL_VRAM)
                return false;

        for (pages_left = bo->tbo.mem.num_pages; pages_left;
             pages_left -= node->size, node++)
                if (node->start < fpfn)
                        return true;

        return false;
}

/**
 * amdgpu_bo_explicit_sync - return whether the bo is explicitly synced
 */
static inline bool amdgpu_bo_explicit_sync(struct amdgpu_bo *bo)
{
        return bo->flags & AMDGPU_GEM_CREATE_EXPLICIT_SYNC;
}

bool amdgpu_bo_is_amdgpu_bo(struct ttm_buffer_object *bo);
void amdgpu_bo_placement_from_domain(struct amdgpu_bo *abo, u32 domain);

int amdgpu_bo_create(struct amdgpu_device *adev,
                     struct amdgpu_bo_param *bp,
                     struct amdgpu_bo **bo_ptr);
int amdgpu_bo_create_reserved(struct amdgpu_device *adev,
                              unsigned long size, int align,
                              u32 domain, struct amdgpu_bo **bo_ptr,
                              u64 *gpu_addr, void **cpu_addr);
int amdgpu_bo_create_kernel(struct amdgpu_device *adev,
                            unsigned long size, int align,
                            u32 domain, struct amdgpu_bo **bo_ptr,
                            u64 *gpu_addr, void **cpu_addr);
void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr,
                           void **cpu_addr);
int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr);
void *amdgpu_bo_kptr(struct amdgpu_bo *bo);
void amdgpu_bo_kunmap(struct amdgpu_bo *bo);
struct amdgpu_bo *amdgpu_bo_ref(struct amdgpu_bo *bo);
void amdgpu_bo_unref(struct amdgpu_bo **bo);
int amdgpu_bo_pin(struct amdgpu_bo *bo, u32 domain);
int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32 domain,
                             u64 min_offset, u64 max_offset);
int amdgpu_bo_unpin(struct amdgpu_bo *bo);
int amdgpu_bo_evict_vram(struct amdgpu_device *adev);
int amdgpu_bo_init(struct amdgpu_device *adev);
int amdgpu_bo_late_init(struct amdgpu_device *adev);
void amdgpu_bo_fini(struct amdgpu_device *adev);
int amdgpu_bo_fbdev_mmap(struct amdgpu_bo *bo,
                                struct vm_area_struct *vma);
int amdgpu_bo_set_tiling_flags(struct amdgpu_bo *bo, u64 tiling_flags);
void amdgpu_bo_get_tiling_flags(struct amdgpu_bo *bo, u64 *tiling_flags);
int amdgpu_bo_set_metadata (struct amdgpu_bo *bo, void *metadata,
                            uint32_t metadata_size, uint64_t flags);
int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,
                           size_t buffer_size, uint32_t *metadata_size,
                           uint64_t *flags);
void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
                           bool evict,
                           struct ttm_mem_reg *new_mem);
int amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo);
void amdgpu_bo_fence(struct amdgpu_bo *bo, struct dma_fence *fence,
                     bool shared);
u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo);
int amdgpu_bo_backup_to_shadow(struct amdgpu_device *adev,
                               struct amdgpu_ring *ring,
                               struct amdgpu_bo *bo,
                               struct reservation_object *resv,
                               struct dma_fence **fence, bool direct);
int amdgpu_bo_validate(struct amdgpu_bo *bo);
int amdgpu_bo_restore_shadow(struct amdgpu_bo *shadow,
                             struct dma_fence **fence);
uint32_t amdgpu_bo_get_preferred_pin_domain(struct amdgpu_device *adev,
                                            uint32_t domain);

/*
 * sub allocation
 */

static inline uint64_t amdgpu_sa_bo_gpu_addr(struct amdgpu_sa_bo *sa_bo)
{
        return sa_bo->manager->gpu_addr + sa_bo->soffset;
}

static inline void * amdgpu_sa_bo_cpu_addr(struct amdgpu_sa_bo *sa_bo)
{
        return sa_bo->manager->cpu_ptr + sa_bo->soffset;
}

int amdgpu_sa_bo_manager_init(struct amdgpu_device *adev,
                                     struct amdgpu_sa_manager *sa_manager,
                                     unsigned size, u32 align, u32 domain);
void amdgpu_sa_bo_manager_fini(struct amdgpu_device *adev,
                                      struct amdgpu_sa_manager *sa_manager);
int amdgpu_sa_bo_manager_start(struct amdgpu_device *adev,
                                      struct amdgpu_sa_manager *sa_manager);
int amdgpu_sa_bo_new(struct amdgpu_sa_manager *sa_manager,
                     struct amdgpu_sa_bo **sa_bo,
                     unsigned size, unsigned align);
void amdgpu_sa_bo_free(struct amdgpu_device *adev,
                              struct amdgpu_sa_bo **sa_bo,
                              struct dma_fence *fence);
#if defined(CONFIG_DEBUG_FS)
void amdgpu_sa_bo_dump_debug_info(struct amdgpu_sa_manager *sa_manager,
                                         struct seq_file *m);
#endif


#endif