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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NVKM_FBRAM_FUC_H__
#define __NVKM_FBRAM_FUC_H__
#include <subdev/fb.h>
#include <subdev/pmu.h>
struct ramfuc {
struct nvkm_memx *memx;
struct nvkm_fb *fb;
int sequence;
};
struct ramfuc_reg {
int sequence;
bool force;
u32 addr;
u32 stride; /* in bytes */
u32 mask;
u32 data;
};
static inline struct ramfuc_reg
ramfuc_stride(u32 addr, u32 stride, u32 mask)
{
return (struct ramfuc_reg) {
.sequence = 0,
.addr = addr,
.stride = stride,
.mask = mask,
.data = 0xdeadbeef,
};
}
static inline struct ramfuc_reg
ramfuc_reg2(u32 addr1, u32 addr2)
{
return (struct ramfuc_reg) {
.sequence = 0,
.addr = addr1,
.stride = addr2 - addr1,
.mask = 0x3,
.data = 0xdeadbeef,
};
}
static noinline struct ramfuc_reg
ramfuc_reg(u32 addr)
{
return (struct ramfuc_reg) {
.sequence = 0,
.addr = addr,
.stride = 0,
.mask = 0x1,
.data = 0xdeadbeef,
};
}
static inline int
ramfuc_init(struct ramfuc *ram, struct nvkm_fb *fb)
{
int ret = nvkm_memx_init(fb->subdev.device->pmu, &ram->memx);
if (ret)
return ret;
ram->sequence++;
ram->fb = fb;
return 0;
}
static inline int
ramfuc_exec(struct ramfuc *ram, bool exec)
{
int ret = 0;
if (ram->fb) {
ret = nvkm_memx_fini(&ram->memx, exec);
ram->fb = NULL;
}
return ret;
}
static inline u32
ramfuc_rd32(struct ramfuc *ram, struct ramfuc_reg *reg)
{
struct nvkm_device *device = ram->fb->subdev.device;
if (reg->sequence != ram->sequence)
reg->data = nvkm_rd32(device, reg->addr);
return reg->data;
}
static inline void
ramfuc_wr32(struct ramfuc *ram, struct ramfuc_reg *reg, u32 data)
{
unsigned int mask, off = 0;
reg->sequence = ram->sequence;
reg->data = data;
for (mask = reg->mask; mask > 0; mask = (mask & ~1) >> 1) {
if (mask & 1)
nvkm_memx_wr32(ram->memx, reg->addr+off, reg->data);
off += reg->stride;
}
}
static inline void
ramfuc_nuke(struct ramfuc *ram, struct ramfuc_reg *reg)
{
reg->force = true;
}
static inline u32
ramfuc_mask(struct ramfuc *ram, struct ramfuc_reg *reg, u32 mask, u32 data)
{
u32 temp = ramfuc_rd32(ram, reg);
if (temp != ((temp & ~mask) | data) || reg->force) {
ramfuc_wr32(ram, reg, (temp & ~mask) | data);
reg->force = false;
}
return temp;
}
static inline void
ramfuc_wait(struct ramfuc *ram, u32 addr, u32 mask, u32 data, u32 nsec)
{
nvkm_memx_wait(ram->memx, addr, mask, data, nsec);
}
static inline void
ramfuc_nsec(struct ramfuc *ram, u32 nsec)
{
nvkm_memx_nsec(ram->memx, nsec);
}
static inline void
ramfuc_wait_vblank(struct ramfuc *ram)
{
nvkm_memx_wait_vblank(ram->memx);
}
static inline void
ramfuc_train(struct ramfuc *ram)
{
nvkm_memx_train(ram->memx);
}
static inline int
ramfuc_train_result(struct nvkm_fb *fb, u32 *result, u32 rsize)
{
return nvkm_memx_train_result(fb->subdev.device->pmu, result, rsize);
}
static inline void
ramfuc_block(struct ramfuc *ram)
{
nvkm_memx_block(ram->memx);
}
static inline void
ramfuc_unblock(struct ramfuc *ram)
{
nvkm_memx_unblock(ram->memx);
}
#define ram_init(s,p) ramfuc_init(&(s)->base, (p))
#define ram_exec(s,e) ramfuc_exec(&(s)->base, (e))
#define ram_have(s,r) ((s)->r_##r.addr != 0x000000)
#define ram_rd32(s,r) ramfuc_rd32(&(s)->base, &(s)->r_##r)
#define ram_wr32(s,r,d) ramfuc_wr32(&(s)->base, &(s)->r_##r, (d))
#define ram_nuke(s,r) ramfuc_nuke(&(s)->base, &(s)->r_##r)
#define ram_mask(s,r,m,d) ramfuc_mask(&(s)->base, &(s)->r_##r, (m), (d))
#define ram_wait(s,r,m,d,n) ramfuc_wait(&(s)->base, (r), (m), (d), (n))
#define ram_nsec(s,n) ramfuc_nsec(&(s)->base, (n))
#define ram_wait_vblank(s) ramfuc_wait_vblank(&(s)->base)
#define ram_train(s) ramfuc_train(&(s)->base)
#define ram_train_result(s,r,l) ramfuc_train_result((s), (r), (l))
#define ram_block(s) ramfuc_block(&(s)->base)
#define ram_unblock(s) ramfuc_unblock(&(s)->base)
#endif
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