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arm/raspberrypi: cache manager can be used for mailbox synchronization now. Remove workarounds.

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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
This commit is contained in:
Pavel Pisa
2016-07-15 16:21:12 +02:00
parent c2a4b8bf37
commit a48c05226d
1 changed files with 2 additions and 33 deletions
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35
c/src/lib/libbsp/arm/raspberrypi/misc/vc.c
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@@ -56,39 +56,8 @@ static inline void bcm2835_mailbox_buffer_flush_and_invalidate(
size_t size
)
{
uint32_t sctlr_val;
sctlr_val = arm_cp15_get_control();
RTEMS_COMPILER_MEMORY_BARRIER();
arm_cp15_drain_write_buffer();
if ( sctlr_val & ( ARM_CP15_CTRL_C | ARM_CP15_CTRL_M ) ) {
#if 0
/*
These architecture independent RTEMS API functions should be
used there but CPU_DATA_CACHE_ALIGNMENT is not defined
for ARM architecture version used on RPi and functions
are dummy for now and do not provide required synchronization
*/
rtems_cache_flush_multiple_data_lines( buf, size );
rtems_cache_invalidate_multiple_data_lines( buf, size );
#elif 0
/* Flush complete data cache, does not work on RPi2 for some reason */
arm_cp15_data_cache_clean_and_invalidate();
#else
/*
* This is temporal workaround for missing cache meanager
* which works on RPi2
*/
size += (uintptr_t)buf & ~63;
size = (size + 63) & ~63;
while ( size ) {
size -= 32;
arm_cp15_data_cache_clean_and_invalidate_line(buf);
}
#endif
}
rtems_cache_flush_multiple_data_lines( buf, size );
rtems_cache_invalidate_multiple_data_lines( buf, size );
}
#define BCM2835_MBOX_VAL_LENGTH_MASK( _val_len ) \