cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramfuc.h

#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, }; }

Contributors

PersonTokensPropCommitsCommitProp
Roy Spliet4591.84%150.00%
Ben Skeggs48.16%150.00%
Total49100.00%2100.00%


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, }; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs3470.83%150.00%
Roy Spliet1429.17%150.00%
Total48100.00%2100.00%

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; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs57100.00%5100.00%
Total57100.00%5100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs49100.00%3100.00%
Total49100.00%3100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs58100.00%2100.00%
Total58100.00%2100.00%


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; } }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs5759.38%266.67%
Roy Spliet3940.62%133.33%
Total96100.00%3100.00%


static inline void ramfuc_nuke(struct ramfuc *ram, struct ramfuc_reg *reg) { reg->force = true; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs23100.00%1100.00%
Total23100.00%1100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs79100.00%1100.00%
Total79100.00%1100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs39100.00%2100.00%
Total39100.00%2100.00%


static inline void ramfuc_nsec(struct ramfuc *ram, u32 nsec) { nvkm_memx_nsec(ram->memx, nsec); }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs24100.00%2100.00%
Total24100.00%2100.00%


static inline void ramfuc_wait_vblank(struct ramfuc *ram) { nvkm_memx_wait_vblank(ram->memx); }

Contributors

PersonTokensPropCommitsCommitProp
Roy Spliet1894.74%150.00%
Ben Skeggs15.26%150.00%
Total19100.00%2100.00%


static inline void ramfuc_train(struct ramfuc *ram) { nvkm_memx_train(ram->memx); }

Contributors

PersonTokensPropCommitsCommitProp
Roy Spliet1894.74%266.67%
Ben Skeggs15.26%133.33%
Total19100.00%3100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
Roy Spliet2571.43%120.00%
Ben Skeggs1028.57%480.00%
Total35100.00%5100.00%


static inline void ramfuc_block(struct ramfuc *ram) { nvkm_memx_block(ram->memx); }

Contributors

PersonTokensPropCommitsCommitProp
Roy Spliet1789.47%250.00%
Ben Skeggs210.53%250.00%
Total19100.00%4100.00%


static inline void ramfuc_unblock(struct ramfuc *ram) { nvkm_memx_unblock(ram->memx); }

Contributors

PersonTokensPropCommitsCommitProp
Roy Spliet1789.47%133.33%
Ben Skeggs210.53%266.67%
Total19100.00%3100.00%

#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

Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs59468.83%758.33%
Roy Spliet26430.59%433.33%
Stéphane Marchesin50.58%18.33%
Total863100.00%12100.00%
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