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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/bus/hwsq.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/bus/hwsq.h')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/bus/hwsq.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bus/hwsq.h b/drivers/gpu/drm/nouveau/nvkm/subdev/bus/hwsq.h new file mode 100644 index 000000000..217a0a4a3 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bus/hwsq.h @@ -0,0 +1,148 @@ +/* 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 |