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grlib: use cpu-independent routines for uncached access

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Update #3678.
This commit is contained in:
Jiri Gaisler
2019-01-18 18:00:47 +01:00
committed by Sebastian Huber
parent 5981c8ca9f
commit 9b2b389e8d
10 changed files with 145 additions and 71 deletions
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27
bsps/shared/grlib/can/grcan.c
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@@ -165,40 +165,19 @@ static void grcan_hw_sync(
static void grcan_interrupt(void *arg);
#ifdef GRCAN_REG_BYPASS_CACHE
#define READ_REG(address) _grcan_read_nocache((unsigned int)(address))
#define READ_REG(address) grlib_read_uncached32((unsigned int)(address))
#else
#define READ_REG(address) (*(volatile unsigned int *)(address))
#endif
#ifdef GRCAN_DMA_BYPASS_CACHE
#define READ_DMA_WORD(address) _grcan_read_nocache((unsigned int)(address))
#define READ_DMA_BYTE(address) _grcan_read_nocache_byte((unsigned int)(address))
static unsigned char __inline__ _grcan_read_nocache_byte(unsigned int address)
{
unsigned char tmp;
__asm__ (" lduba [%1]1, %0 "
: "=r"(tmp)
: "r"(address)
);
return tmp;
}
#define READ_DMA_WORD(address) grlib_read_uncached32((unsigned int)(address))
#define READ_DMA_BYTE(address) grlib_read_uncached8((unsigned int)(address))
#else
#define READ_DMA_WORD(address) (*(volatile unsigned int *)(address))
#define READ_DMA_BYTE(address) (*(volatile unsigned char *)(address))
#endif
#if defined(GRCAN_REG_BYPASS_CACHE) || defined(GRCAN_DMA_BYPASS_CACHE)
static unsigned int __inline__ _grcan_read_nocache(unsigned int address)
{
unsigned int tmp;
__asm__ (" lda [%1]1, %0 "
: "=r"(tmp)
: "r"(address)
);
return tmp;
}
#endif
#define NELEM(a) ((int) (sizeof (a) / sizeof (a[0])))
static int grcan_count = 0;