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/* SPDX-License-Identifier: MIT */
#ifndef __NVKM_BUS_HWSQ_H__
#define __NVKM_BUS_HWSQ_H__
#include <subdev/bus.h>
struct hwsq {
struct nvkm_subdev *subdev;
struct nvkm_hwsq *hwsq;
int sequence;
};
struct hwsq_reg {
int sequence;
bool force;
u32 addr;
u32 stride; /* in bytes */
u32 mask;
u32 data;
};
static inline struct hwsq_reg
hwsq_stride(u32 addr, u32 stride, u32 mask)
{
return (struct hwsq_reg) {
.sequence = 0,
.force = 0,
.addr = addr,
.stride = stride,
.mask = mask,
.data = 0xdeadbeef,
};
}
static inline struct hwsq_reg
hwsq_reg2(u32 addr1, u32 addr2)
{
return (struct hwsq_reg) {
.sequence = 0,
.force = 0,
.addr = addr1,
.stride = addr2 - addr1,
.mask = 0x3,
.data = 0xdeadbeef,
};
}
static inline struct hwsq_reg
hwsq_reg(u32 addr)
{
return (struct hwsq_reg) {
.sequence = 0,
.force = 0,
.addr = addr,
.stride = 0,
.mask = 0x1,
.data = 0xdeadbeef,
};
}
static inline int
hwsq_init(struct hwsq *ram, struct nvkm_subdev *subdev)
{
int ret;
ret = nvkm_hwsq_init(subdev, &ram->hwsq);
if (ret)
return ret;
ram->sequence++;
ram->subdev = subdev;
return 0;
}
static inline int
hwsq_exec(struct hwsq *ram, bool exec)
{
int ret = 0;
if (ram->subdev) {
ret = nvkm_hwsq_fini(&ram->hwsq, exec);
ram->subdev = NULL;
}
return ret;
}
static inline u32
hwsq_rd32(struct hwsq *ram, struct hwsq_reg *reg)
{
struct nvkm_device *device = ram->subdev->device;
if (reg->sequence != ram->sequence)
reg->data = nvkm_rd32(device, reg->addr);
return reg->data;
}
static inline void
hwsq_wr32(struct hwsq *ram, struct hwsq_reg *reg, u32 data)
{
u32 mask, off = 0;
reg->sequence = ram->sequence;
reg->data = data;
for (mask = reg->mask; mask > 0; mask = (mask & ~1) >> 1) {
if (mask & 1)
nvkm_hwsq_wr32(ram->hwsq, reg->addr+off, reg->data);
off += reg->stride;
}
}
static inline void
hwsq_nuke(struct hwsq *ram, struct hwsq_reg *reg)
{
reg->force = true;
}
static inline u32
hwsq_mask(struct hwsq *ram, struct hwsq_reg *reg, u32 mask, u32 data)
{
u32 temp = hwsq_rd32(ram, reg);
if (temp != ((temp & ~mask) | data) || reg->force)
hwsq_wr32(ram, reg, (temp & ~mask) | data);
return temp;
}
static inline void
hwsq_setf(struct hwsq *ram, u8 flag, int data)
{
nvkm_hwsq_setf(ram->hwsq, flag, data);
}
static inline void
hwsq_wait(struct hwsq *ram, u8 flag, u8 data)
{
nvkm_hwsq_wait(ram->hwsq, flag, data);
}
static inline void
hwsq_wait_vblank(struct hwsq *ram)
{
nvkm_hwsq_wait_vblank(ram->hwsq);
}
static inline void
hwsq_nsec(struct hwsq *ram, u32 nsec)
{
nvkm_hwsq_nsec(ram->hwsq, nsec);
}
#endif
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