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authorBen Skeggs <bskeggs@redhat.com>2013-03-04 15:01:37 +1000
committerBen Skeggs <bskeggs@redhat.com>2013-11-08 16:04:40 +1000
commit1b259fc870fab27df8109b4c0c627d3958b3afb3 (patch)
tree5d3be8ff0aafcae502d9ee12e835c7b2e75cf02e /drivers/gpu/drm/nouveau/core/subdev/fb/ramfuc.h
parent2a3980e3356c688af8e75c1015b64515be0a512e (diff)
drm/nouveau/fb: implement various bits of work towards memory reclocking
Not even remotely ready for the vast majority of the world. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/fb/ramfuc.h')
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/fb/ramfuc.h118
1 files changed, 118 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/ramfuc.h b/drivers/gpu/drm/nouveau/core/subdev/fb/ramfuc.h
new file mode 100644
index 000000000000..0f57fcfe0bbf
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/fb/ramfuc.h
@@ -0,0 +1,118 @@
+#ifndef __NVKM_FBRAM_FUC_H__
+#define __NVKM_FBRAM_FUC_H__
+
+#include <subdev/pwr.h>
+
+struct ramfuc {
+ struct nouveau_memx *memx;
+ struct nouveau_fb *pfb;
+ int sequence;
+};
+
+struct ramfuc_reg {
+ int sequence;
+ bool force;
+ u32 addr[2];
+ u32 data;
+};
+
+static inline struct ramfuc_reg
+ramfuc_reg2(u32 addr1, u32 addr2)
+{
+ return (struct ramfuc_reg) {
+ .sequence = 0,
+ .addr = { addr1, addr2 },
+ .data = 0xdeadbeef,
+ };
+}
+
+static inline struct ramfuc_reg
+ramfuc_reg(u32 addr)
+{
+ return ramfuc_reg2(addr, addr);
+}
+
+static inline int
+ramfuc_init(struct ramfuc *ram, struct nouveau_fb *pfb)
+{
+ struct nouveau_pwr *ppwr = nouveau_pwr(pfb);
+ int ret;
+
+ ret = nouveau_memx_init(ppwr, &ram->memx);
+ if (ret)
+ return ret;
+
+ ram->sequence++;
+ ram->pfb = pfb;
+ return 0;
+}
+
+static inline int
+ramfuc_exec(struct ramfuc *ram, bool exec)
+{
+ int ret = 0;
+ if (ram->pfb) {
+ ret = nouveau_memx_fini(&ram->memx, exec);
+ ram->pfb = NULL;
+ }
+ return ret;
+}
+
+static inline u32
+ramfuc_rd32(struct ramfuc *ram, struct ramfuc_reg *reg)
+{
+ if (reg->sequence != ram->sequence)
+ reg->data = nv_rd32(ram->pfb, reg->addr[0]);
+ return reg->data;
+}
+
+static inline void
+ramfuc_wr32(struct ramfuc *ram, struct ramfuc_reg *reg, u32 data)
+{
+ reg->sequence = ram->sequence;
+ reg->data = data;
+ if (reg->addr[0] != reg->addr[1])
+ nouveau_memx_wr32(ram->memx, reg->addr[1], reg->data);
+ nouveau_memx_wr32(ram->memx, reg->addr[0], reg->data);
+}
+
+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)
+{
+ nouveau_memx_wait(ram->memx, addr, mask, data, nsec);
+}
+
+static inline void
+ramfuc_nsec(struct ramfuc *ram, u32 nsec)
+{
+ nouveau_memx_nsec(ram->memx, nsec);
+}
+
+#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))
+
+#endif