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GRSPW: Make sure buffers are 64-bit aligned

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This is to improve odds of getting a fast memcpy-operation.
This commit is contained in:
Arvid Bjorkengren
2012-09-25 15:26:00 +02:00
committed by Daniel Hellstrom
parent 18564f5317
commit 949d0d6206
1 changed files with 7 additions and 4 deletions
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11
c/src/lib/libbsp/sparc/shared/spw/grspw.c
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@@ -112,6 +112,7 @@ typedef struct {
/* statistics */
spw_stats stat;
unsigned int _ptr_rxbuf0;
char *ptr_rxbuf0;
char *ptr_txdbuf0;
char *ptr_txhbuf0;
@@ -522,6 +523,7 @@ int grspw_device_init(GRSPW_DEV *pDev)
pDev->txbufcnt = SPACEWIRE_TXBUFS_NR;
pDev->rxbufcnt = SPACEWIRE_RXBUFS_NR;
pDev->_ptr_rxbuf0 = 0;
pDev->ptr_rxbuf0 = 0;
pDev->ptr_txdbuf0 = 0;
pDev->ptr_txhbuf0 = 0;
@@ -617,10 +619,11 @@ static int grspw_buffer_alloc(GRSPW_DEV *pDev)
pDev->ptr_rxbuf0 = pDev->rx_dma_area;
}
} else {
if (pDev->ptr_rxbuf0) {
free(pDev->ptr_rxbuf0);
if (pDev->_ptr_rxbuf0) {
free(pDev->_ptr_rxbuf0);
}
pDev->ptr_rxbuf0 = (char *) malloc(pDev->rxbufsize * pDev->rxbufcnt);
pDev->_ptr_rxbuf0 = (unsigned int) malloc(pDev->rxbufsize * pDev->rxbufcnt+4);
pDev->ptr_rxbuf0 = (char *)((pDev->_ptr_rxbuf0+7)&~7);
if ( !pDev->ptr_rxbuf0 )
return 1;
}
@@ -1242,7 +1245,7 @@ static rtems_device_driver grspw_control(
}
/* Save new buffer sizes */
pDev->rxbufsize = ps->rxsize;
pDev->rxbufsize = ((ps->rxsize+7)&~7);
pDev->txdbufsize = ps->txdsize;
pDev->txhbufsize = ps->txhsize;
pDev->config.rxmaxlen = pDev->rxbufsize;