1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 OR MIT */ 2*4882a593Smuzhiyun /* Copyright 2017-2019 Qiang Yu <yuq825@gmail.com> */ 3*4882a593Smuzhiyun 4*4882a593Smuzhiyun #ifndef __LIMA_VM_H__ 5*4882a593Smuzhiyun #define __LIMA_VM_H__ 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #include <drm/drm_mm.h> 8*4882a593Smuzhiyun #include <linux/kref.h> 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #define LIMA_PAGE_SIZE 4096 11*4882a593Smuzhiyun #define LIMA_PAGE_MASK (LIMA_PAGE_SIZE - 1) 12*4882a593Smuzhiyun #define LIMA_PAGE_ENT_NUM (LIMA_PAGE_SIZE / sizeof(u32)) 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun #define LIMA_VM_NUM_PT_PER_BT_SHIFT 3 15*4882a593Smuzhiyun #define LIMA_VM_NUM_PT_PER_BT (1 << LIMA_VM_NUM_PT_PER_BT_SHIFT) 16*4882a593Smuzhiyun #define LIMA_VM_NUM_BT (LIMA_PAGE_ENT_NUM >> LIMA_VM_NUM_PT_PER_BT_SHIFT) 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun #define LIMA_VA_RESERVE_START 0x0FFF00000ULL 19*4882a593Smuzhiyun #define LIMA_VA_RESERVE_DLBU LIMA_VA_RESERVE_START 20*4882a593Smuzhiyun #define LIMA_VA_RESERVE_END 0x100000000ULL 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun struct lima_device; 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun struct lima_vm_page { 25*4882a593Smuzhiyun u32 *cpu; 26*4882a593Smuzhiyun dma_addr_t dma; 27*4882a593Smuzhiyun }; 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun struct lima_vm { 30*4882a593Smuzhiyun struct mutex lock; 31*4882a593Smuzhiyun struct kref refcount; 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun struct drm_mm mm; 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun struct lima_device *dev; 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun struct lima_vm_page pd; 38*4882a593Smuzhiyun struct lima_vm_page bts[LIMA_VM_NUM_BT]; 39*4882a593Smuzhiyun }; 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun int lima_vm_bo_add(struct lima_vm *vm, struct lima_bo *bo, bool create); 42*4882a593Smuzhiyun void lima_vm_bo_del(struct lima_vm *vm, struct lima_bo *bo); 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun u32 lima_vm_get_va(struct lima_vm *vm, struct lima_bo *bo); 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun struct lima_vm *lima_vm_create(struct lima_device *dev); 47*4882a593Smuzhiyun void lima_vm_release(struct kref *kref); 48*4882a593Smuzhiyun lima_vm_get(struct lima_vm * vm)49*4882a593Smuzhiyunstatic inline struct lima_vm *lima_vm_get(struct lima_vm *vm) 50*4882a593Smuzhiyun { 51*4882a593Smuzhiyun kref_get(&vm->refcount); 52*4882a593Smuzhiyun return vm; 53*4882a593Smuzhiyun } 54*4882a593Smuzhiyun lima_vm_put(struct lima_vm * vm)55*4882a593Smuzhiyunstatic inline void lima_vm_put(struct lima_vm *vm) 56*4882a593Smuzhiyun { 57*4882a593Smuzhiyun if (vm) 58*4882a593Smuzhiyun kref_put(&vm->refcount, lima_vm_release); 59*4882a593Smuzhiyun } 60*4882a593Smuzhiyun 61*4882a593Smuzhiyun void lima_vm_print(struct lima_vm *vm); 62*4882a593Smuzhiyun int lima_vm_map_bo(struct lima_vm *vm, struct lima_bo *bo, int pageoff); 63*4882a593Smuzhiyun 64*4882a593Smuzhiyun #endif 65