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drm/nouveau/pwr/memx: Make FB disable and enable explicit

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Needs to be done after wait-for-VBLANK, and NVA3 requires register writes
in between.

Rather than hard-coding register writes, just split out fb_disable and
fb_enable.

v2. Squashed "fb/ramnve0: disable fb before reclocking"

Signed-off-by: Roy Spliet <rspliet@eclipso.eu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Roy Spliet 2014-09-04 16:58:50 +02:00 committed by Ben Skeggs
parent e1a6f7da9a
commit d93e996aed
6 changed files with 43 additions and 6 deletions
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2
drivers/gpu/drm/nouveau/core/include/subdev/pwr.h
View file

@ -48,5 +48,7 @@ void nouveau_memx_wait(struct nouveau_memx *,
u32 addr, u32 mask, u32 data, u32 nsec);
void nouveau_memx_nsec(struct nouveau_memx *, u32 nsec);
void nouveau_memx_wait_vblank(struct nouveau_memx *);
void nouveau_memx_fb_disable(struct nouveau_memx *);
void nouveau_memx_fb_enable(struct nouveau_memx *);
#endif

14
drivers/gpu/drm/nouveau/core/subdev/fb/ramfuc.h
View file

@ -111,6 +111,18 @@ ramfuc_wait_vblank(struct ramfuc *ram)
nouveau_memx_wait_vblank(ram->memx);
}
static inline void
ramfuc_fb_disable(struct ramfuc *ram)
{
nouveau_memx_fb_disable(ram->memx);
}
static inline void
ramfuc_fb_enable(struct ramfuc *ram)
{
nouveau_memx_fb_enable(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[0] != 0x000000)
@ -121,5 +133,7 @@ ramfuc_wait_vblank(struct ramfuc *ram)
#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_fb_disable(s) ramfuc_fb_disable(&(s)->base)
#define ram_fb_enable(s) ramfuc_fb_enable(&(s)->base)
#endif

5
drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c
View file

@ -998,6 +998,8 @@ nve0_ram_calc_xits(struct nouveau_fb *pfb, struct nouveau_ram_data *next)
if (ret)
return ret;
ram_fb_disable(fuc);
ram->mode = (next->freq > fuc->refpll.vco1.max_freq) ? 2 : 1;
ram->from = ram_rd32(fuc, 0x1373f4) & 0x0000000f;
@ -1061,6 +1063,9 @@ nve0_ram_calc_xits(struct nouveau_fb *pfb, struct nouveau_ram_data *next)
break;
}
if (!ret)
ram_fb_enable(fuc);
return ret;
}

4
drivers/gpu/drm/nouveau/core/subdev/pwr/fuc/memx.fuc
View file

@ -43,9 +43,9 @@ process(PROC_MEMX, #memx_init, #memx_recv)
*/ .b32 func
memx_func_head:
handler(ENTER , 0x0000, 0x0000, #memx_func_enter)
handler(FB_OFF, 0x0000, 0x0000, #memx_func_enter)
memx_func_next:
handler(LEAVE , 0x0000, 0x0000, #memx_func_leave)
handler(FB_ON , 0x0000, 0x0000, #memx_func_leave)
handler(WR32 , 0x0000, 0x0002, #memx_func_wr32)
handler(WAIT , 0x0004, 0x0000, #memx_func_wait)
handler(DELAY , 0x0001, 0x0000, #memx_func_delay)

4
drivers/gpu/drm/nouveau/core/subdev/pwr/fuc/os.h
View file

@ -19,8 +19,8 @@
#define MEMX_MSG_EXEC 1
/* MEMX: script opcode definitions */
#define MEMX_ENTER 0
#define MEMX_LEAVE 1
#define MEMX_FB_OFF 0
#define MEMX_FB_ON 1
#define MEMX_WR32 2
#define MEMX_WAIT 3
#define MEMX_DELAY 4

20
drivers/gpu/drm/nouveau/core/subdev/pwr/memx.c
View file

@ -62,7 +62,6 @@ nouveau_memx_init(struct nouveau_pwr *ppwr, struct nouveau_memx **pmemx)
nv_wr32(ppwr, 0x10a580, 0x00000003);
} while (nv_rd32(ppwr, 0x10a580) != 0x00000003);
nv_wr32(ppwr, 0x10a1c0, 0x01000000 | memx->base);
nv_wr32(ppwr, 0x10a1c4, 0x00010000 | MEMX_ENTER);
return 0;
}
@ -78,7 +77,6 @@ nouveau_memx_fini(struct nouveau_memx **pmemx, bool exec)
memx_out(memx);
/* release data segment access */
nv_wr32(ppwr, 0x10a1c4, 0x00000000 | MEMX_LEAVE);
finish = nv_rd32(ppwr, 0x10a1c0) & 0x00ffffff;
nv_wr32(ppwr, 0x10a580, 0x00000000);
@ -150,4 +148,22 @@ nouveau_memx_wait_vblank(struct nouveau_memx *memx)
memx_out(memx); /* fuc can't handle multiple */
}
void
nouveau_memx_fb_disable(struct nouveau_memx *memx)
{
struct nouveau_pwr *ppwr = memx->ppwr;
nv_debug(memx->ppwr, " FB OFF\n");
nv_wr32(ppwr, 0x10a1c4, MEMX_FB_OFF);
}
void
nouveau_memx_fb_enable(struct nouveau_memx *memx)
{
struct nouveau_pwr *ppwr = memx->ppwr;
nv_debug(memx->ppwr, " FB ON\n");
nv_wr32(ppwr, 0x10a1c4, MEMX_FB_ON);
}
#endif