[deliverable/linux.git] / drivers / gpu / drm / nouveau / nvkm / subdev / bus / hwsq.h

#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)
{
	struct nvkm_bus *bus = nvkm_bus(subdev);
	int ret;

	ret = nvkm_hwsq_init(bus, &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)
{
	if (reg->sequence != ram->sequence)
		reg->data = nv_rd32(ram->subdev, 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_nsec(struct hwsq *ram, u32 nsec)
{
	nvkm_hwsq_nsec(ram->hwsq, nsec);
}
#endif
Commit	Line	Data
2984506f BS	1	#ifndef __NVKM_BUS_HWSQ_H__
2984506f BS	2	#define __NVKM_BUS_HWSQ_H__
2984506f BS	3	#include <subdev/bus.h>
	4
	5	struct hwsq {
5f8824de BS	6	struct nvkm_subdev *subdev;
5f8824de BS	7	struct nvkm_hwsq *hwsq;
2984506f BS	8	int sequence;
	9	};
	10
	11	struct hwsq_reg {
	12	int sequence;
	13	bool force;
3834b632 RS	14	u32 addr;
	15	u32 stride; /* in bytes */
	16	u32 mask;
2984506f BS	17	u32 data;
	18	};
	19
3834b632 RS	20	static inline struct hwsq_reg
	21	hwsq_stride(u32 addr, u32 stride, u32 mask)
	22	{
	23	return (struct hwsq_reg) {
	24	.sequence = 0,
	25	.force = 0,
	26	.addr = addr,
	27	.stride = stride,
	28	.mask = mask,
	29	.data = 0xdeadbeef,
	30	};
	31	}
	32
2984506f BS	33	static inline struct hwsq_reg
	34	hwsq_reg2(u32 addr1, u32 addr2)
	35	{
	36	return (struct hwsq_reg) {
	37	.sequence = 0,
	38	.force = 0,
3834b632 RS	39	.addr = addr1,
	40	.stride = addr2 - addr1,
	41	.mask = 0x3,
2984506f BS	42	.data = 0xdeadbeef,
	43	};
	44	}
	45
	46	static inline struct hwsq_reg
	47	hwsq_reg(u32 addr)
	48	{
3834b632 RS	49	return (struct hwsq_reg) {
	50	.sequence = 0,
	51	.force = 0,
	52	.addr = addr,
	53	.stride = 0,
	54	.mask = 0x1,
	55	.data = 0xdeadbeef,
	56	};
2984506f BS	57	}
	58
	59	static inline int
5f8824de	60	hwsq_init(struct hwsq ram, struct nvkm_subdev subdev)
2984506f	61	{
01d6b956	62	struct nvkm_bus *bus = nvkm_bus(subdev);
2984506f BS	63	int ret;
2984506f BS	64
01d6b956	65	ret = nvkm_hwsq_init(bus, &ram->hwsq);
2984506f BS	66	if (ret)
	67	return ret;
	68
	69	ram->sequence++;
	70	ram->subdev = subdev;
	71	return 0;
	72	}
	73
	74	static inline int
	75	hwsq_exec(struct hwsq *ram, bool exec)
	76	{
	77	int ret = 0;
	78	if (ram->subdev) {
5f8824de	79	ret = nvkm_hwsq_fini(&ram->hwsq, exec);
2984506f BS	80	ram->subdev = NULL;
	81	}
	82	return ret;
	83	}
	84
	85	static inline u32
	86	hwsq_rd32(struct hwsq ram, struct hwsq_reg reg)
	87	{
	88	if (reg->sequence != ram->sequence)
3834b632	89	reg->data = nv_rd32(ram->subdev, reg->addr);
2984506f BS	90	return reg->data;
	91	}
	92
	93	static inline void
	94	hwsq_wr32(struct hwsq ram, struct hwsq_reg reg, u32 data)
	95	{
3834b632 RS	96	u32 mask, off = 0;
3834b632 RS	97
2984506f BS	98	reg->sequence = ram->sequence;
2984506f BS	99	reg->data = data;
3834b632 RS	100
	101	for (mask = reg->mask; mask > 0; mask = (mask & ~1) >> 1) {
	102	if (mask & 1)
	103	nvkm_hwsq_wr32(ram->hwsq, reg->addr+off, reg->data);
	104
	105	off += reg->stride;
	106	}
2984506f BS	107	}
	108
	109	static inline void
	110	hwsq_nuke(struct hwsq ram, struct hwsq_reg reg)
	111	{
	112	reg->force = true;
	113	}
	114
	115	static inline u32
	116	hwsq_mask(struct hwsq ram, struct hwsq_reg reg, u32 mask, u32 data)
	117	{
	118	u32 temp = hwsq_rd32(ram, reg);
	119	if (temp != ((temp & ~mask) \| data) \|\| reg->force)
	120	hwsq_wr32(ram, reg, (temp & ~mask) \| data);
	121	return temp;
	122	}
	123
	124	static inline void
	125	hwsq_setf(struct hwsq *ram, u8 flag, int data)
	126	{
5f8824de	127	nvkm_hwsq_setf(ram->hwsq, flag, data);
2984506f BS	128	}
	129
	130	static inline void
	131	hwsq_wait(struct hwsq *ram, u8 flag, u8 data)
	132	{
5f8824de	133	nvkm_hwsq_wait(ram->hwsq, flag, data);
2984506f BS	134	}
	135
	136	static inline void
	137	hwsq_nsec(struct hwsq *ram, u32 nsec)
	138	{
5f8824de	139	nvkm_hwsq_nsec(ram->hwsq, nsec);
2984506f	140	}
2984506f	141	#endif