mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 00:46:21 +07:00
24943269e5
No need to handle this check before calling lima_vm_put. Tested-by: Bhushan Shah <bshah@kde.org> Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com> Signed-off-by: Qiang Yu <yuq825@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200421133551.31481-4-yuq825@gmail.com
65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
|
|
/* Copyright 2017-2019 Qiang Yu <yuq825@gmail.com> */
|
|
|
|
#ifndef __LIMA_VM_H__
|
|
#define __LIMA_VM_H__
|
|
|
|
#include <drm/drm_mm.h>
|
|
#include <linux/kref.h>
|
|
|
|
#define LIMA_PAGE_SIZE 4096
|
|
#define LIMA_PAGE_MASK (LIMA_PAGE_SIZE - 1)
|
|
#define LIMA_PAGE_ENT_NUM (LIMA_PAGE_SIZE / sizeof(u32))
|
|
|
|
#define LIMA_VM_NUM_PT_PER_BT_SHIFT 3
|
|
#define LIMA_VM_NUM_PT_PER_BT (1 << LIMA_VM_NUM_PT_PER_BT_SHIFT)
|
|
#define LIMA_VM_NUM_BT (LIMA_PAGE_ENT_NUM >> LIMA_VM_NUM_PT_PER_BT_SHIFT)
|
|
|
|
#define LIMA_VA_RESERVE_START 0x0FFF00000ULL
|
|
#define LIMA_VA_RESERVE_DLBU LIMA_VA_RESERVE_START
|
|
#define LIMA_VA_RESERVE_END 0x100000000ULL
|
|
|
|
struct lima_device;
|
|
|
|
struct lima_vm_page {
|
|
u32 *cpu;
|
|
dma_addr_t dma;
|
|
};
|
|
|
|
struct lima_vm {
|
|
struct mutex lock;
|
|
struct kref refcount;
|
|
|
|
struct drm_mm mm;
|
|
|
|
struct lima_device *dev;
|
|
|
|
struct lima_vm_page pd;
|
|
struct lima_vm_page bts[LIMA_VM_NUM_BT];
|
|
};
|
|
|
|
int lima_vm_bo_add(struct lima_vm *vm, struct lima_bo *bo, bool create);
|
|
void lima_vm_bo_del(struct lima_vm *vm, struct lima_bo *bo);
|
|
|
|
u32 lima_vm_get_va(struct lima_vm *vm, struct lima_bo *bo);
|
|
|
|
struct lima_vm *lima_vm_create(struct lima_device *dev);
|
|
void lima_vm_release(struct kref *kref);
|
|
|
|
static inline struct lima_vm *lima_vm_get(struct lima_vm *vm)
|
|
{
|
|
kref_get(&vm->refcount);
|
|
return vm;
|
|
}
|
|
|
|
static inline void lima_vm_put(struct lima_vm *vm)
|
|
{
|
|
if (vm)
|
|
kref_put(&vm->refcount, lima_vm_release);
|
|
}
|
|
|
|
void lima_vm_print(struct lima_vm *vm);
|
|
int lima_vm_map_bo(struct lima_vm *vm, struct lima_bo *bo, int pageoff);
|
|
|
|
#endif
|