diff options
Diffstat (limited to 'linux/r128_drv.h')
| -rw-r--r-- | linux/r128_drv.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/linux/r128_drv.h b/linux/r128_drv.h index 5b15dddf..91ad9f53 100644 --- a/linux/r128_drv.h +++ b/linux/r128_drv.h @@ -197,6 +197,43 @@ extern int r128_context_switch_complete(drm_device_t *dev, int new); #define R128_MAX_USEC_TIMEOUT 100000 /* 100 ms */ +#ifdef __powerpc__ + +static __inline__ void +WriteMmio32Le(void *base, const unsigned long offset, + const unsigned long val) +{ + __asm__ __volatile__( + "stwbrx %1,%2,%3\n\t" + : "=m" (*(volatile unsigned char *)(base+offset)) + : "r" (val), "b" (base), "r" (offset)); +} + +static __inline__ unsigned int +ReadMmio32Le(void *base, const unsigned long offset) +{ + register unsigned int val; + __asm__ __volatile__( + "lwbrx %0,%1,%2\n\t" + "eieio" + : "=r" (val) + : "b" (base), "r" (offset), + "m" (*(volatile unsigned char *)(base+offset))); + return(val); +} + +#define R128_BASE(reg) ((u32)(dev_priv->mmio->handle)) +#define R128_ADDR(reg) (R128_BASE(reg) + reg) + +#define R128_READ(reg) ReadMmio32Le(R128_BASE(reg),reg) +#define R128_WRITE(reg,val) WriteMmio32Le(R128_BASE(reg),reg,val) + +#define R128_DEREF8(reg) *(__volatile__ char *)R128_ADDR(reg) +#define R128_READ8(reg) R128_DEREF8(reg) +#define R128_WRITE8(reg,val) do { R128_DEREF8(reg) = val; } while (0) + +#else /* ! __powerpc__ */ + #define R128_BASE(reg) ((u32)(dev_priv->mmio->handle)) #define R128_ADDR(reg) (R128_BASE(reg) + reg) @@ -208,6 +245,8 @@ extern int r128_context_switch_complete(drm_device_t *dev, int new); #define R128_READ8(reg) R128_DEREF8(reg) #define R128_WRITE8(reg,val) do { R128_DEREF8(reg) = val; } while (0) +#endif /* __powerpc__ */ + #define R128_WRITE_PLL(addr,val) \ do { \ R128_WRITE8(R128_CLOCK_CNTL_INDEX, ((addr) & 0x1f) | R128_PLL_WR_EN); \ |