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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramfuc.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramfuc.h')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramfuc.h | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramfuc.h b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramfuc.h new file mode 100644 index 000000000..247c0f8a7 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramfuc.h @@ -0,0 +1,178 @@ +/* SPDX-License-Identifier: MIT */ +#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 |