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/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2020 Intel Corporation
*/
#ifndef __I915_GEM_GTT_H__
#define __I915_GEM_GTT_H__
#include <linux/io-mapping.h>
#include <linux/types.h>
#include <drm/drm_mm.h>
#include "gt/intel_gtt.h"
#include "i915_scatterlist.h"
struct drm_i915_gem_object;
struct i915_address_space;
struct i915_gem_ww_ctx;
int __must_check i915_gem_gtt_prepare_pages(struct drm_i915_gem_object *obj,
struct sg_table *pages);
void i915_gem_gtt_finish_pages(struct drm_i915_gem_object *obj,
struct sg_table *pages);
int i915_gem_gtt_reserve(struct i915_address_space *vm,
struct i915_gem_ww_ctx *ww,
struct drm_mm_node *node,
u64 size, u64 offset, unsigned long color,
unsigned int flags);
int i915_gem_gtt_insert(struct i915_address_space *vm,
struct i915_gem_ww_ctx *ww,
struct drm_mm_node *node,
u64 size, u64 alignment, unsigned long color,
u64 start, u64 end, unsigned int flags);
/* Flags used by pin/bind&friends. */
#define PIN_NOEVICT BIT_ULL(0)
#define PIN_NOSEARCH BIT_ULL(1)
#define PIN_NONBLOCK BIT_ULL(2)
#define PIN_MAPPABLE BIT_ULL(3)
#define PIN_ZONE_4G BIT_ULL(4)
#define PIN_HIGH BIT_ULL(5)
#define PIN_OFFSET_BIAS BIT_ULL(6)
#define PIN_OFFSET_FIXED BIT_ULL(7)
#define PIN_VALIDATE BIT_ULL(8) /* validate placement only, no need to call unpin() */
#define PIN_GLOBAL BIT_ULL(10) /* I915_VMA_GLOBAL_BIND */
#define PIN_USER BIT_ULL(11) /* I915_VMA_LOCAL_BIND */
#define PIN_OFFSET_MASK I915_GTT_PAGE_MASK
static inline int i915_vm_sync(struct i915_address_space *vm)
{
int ret;
/* Wait for all requests under this vm to finish */
ret = dma_resv_wait_timeout(vm->root_obj->base.resv,
DMA_RESV_USAGE_BOOKKEEP, false,
MAX_SCHEDULE_TIMEOUT);
if (ret < 0)
return ret;
else if (ret > 0)
return 0;
else
return -ETIMEDOUT;
}
static inline bool i915_vm_is_active(const struct i915_address_space *vm)
{
return !dma_resv_test_signaled(vm->root_obj->base.resv,
DMA_RESV_USAGE_BOOKKEEP);
}
#endif
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