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Fix a cache snooping issue.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Pete Popov 2005-09-18 01:10:46 +00:00 committed by Ralf Baechle
parent d6460827af
commit 13bb199f98
1 changed files with 17 additions and 9 deletions
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26
arch/mips/au1000/common/dbdma.c
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@ -141,12 +141,12 @@ static dbdev_tab_t dbdev_tab[] = {
{ DSCR_CMD0_AES_RX, DEV_FLAGS_IN , 4, 32, 0x10300008, 0, 0 },
{ DSCR_CMD0_AES_TX, DEV_FLAGS_OUT, 4, 32, 0x10300004, 0, 0 },
{ DSCR_CMD0_PSC0_TX, DEV_FLAGS_OUT, 0, 0, 0x11a0001c, 0, 0 },
{ DSCR_CMD0_PSC0_RX, DEV_FLAGS_IN, 0, 0, 0x11a0001c, 0, 0 },
{ DSCR_CMD0_PSC0_TX, DEV_FLAGS_OUT, 0, 16, 0x11a0001c, 0, 0 },
{ DSCR_CMD0_PSC0_RX, DEV_FLAGS_IN, 0, 16, 0x11a0001c, 0, 0 },
{ DSCR_CMD0_PSC0_SYNC, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
{ DSCR_CMD0_PSC1_TX, DEV_FLAGS_OUT, 0, 0, 0x11b0001c, 0, 0 },
{ DSCR_CMD0_PSC1_RX, DEV_FLAGS_IN, 0, 0, 0x11b0001c, 0, 0 },
{ DSCR_CMD0_PSC1_TX, DEV_FLAGS_OUT, 0, 16, 0x11b0001c, 0, 0 },
{ DSCR_CMD0_PSC1_RX, DEV_FLAGS_IN, 0, 16, 0x11b0001c, 0, 0 },
{ DSCR_CMD0_PSC1_SYNC, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
{ DSCR_CMD0_CIM_RXA, DEV_FLAGS_IN, 0, 32, 0x14004020, 0, 0 },
@ -430,7 +430,13 @@ au1xxx_dbdma_ring_alloc(u32 chanid, int entries)
cmd0 |= DSCR_CMD0_SID(srcid);
cmd0 |= DSCR_CMD0_DID(destid);
cmd0 |= DSCR_CMD0_IE | DSCR_CMD0_CV;
cmd0 |= DSCR_CMD0_ST(DSCR_CMD0_ST_CURRENT);
cmd0 |= DSCR_CMD0_ST(DSCR_CMD0_ST_NOCHANGE);
/* is it mem to mem transfer? */
if(((DSCR_CUSTOM2DEV_ID(srcid) == DSCR_CMD0_THROTTLE) || (DSCR_CUSTOM2DEV_ID(srcid) == DSCR_CMD0_ALWAYS)) &&
((DSCR_CUSTOM2DEV_ID(destid) == DSCR_CMD0_THROTTLE) || (DSCR_CUSTOM2DEV_ID(destid) == DSCR_CMD0_ALWAYS))) {
cmd0 |= DSCR_CMD0_MEM;
}
switch (stp->dev_devwidth) {
case 8:
@ -539,7 +545,8 @@ au1xxx_dbdma_ring_alloc(u32 chanid, int entries)
dp->dscr_dest0 = dest0;
dp->dscr_dest1 = dest1;
dp->dscr_stat = 0;
dp->sw_context = dp->sw_status = 0;
dp->sw_context = 0;
dp->sw_status = 0;
dp->dscr_nxtptr = DSCR_NXTPTR(virt_to_phys(dp + 1));
dp++;
}
@ -591,9 +598,6 @@ _au1xxx_dbdma_put_source(u32 chanid, void *buf, int nbytes, u32 flags)
dp->dscr_cmd0 |= DSCR_CMD0_IE;
if (flags & DDMA_FLAGS_NOIE)
dp->dscr_cmd0 &= ~DSCR_CMD0_IE;
/* Get next descriptor pointer.
*/
ctp->put_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
/*
* There is an errata on the Au1200/Au1550 parts that could result
@ -608,6 +612,10 @@ _au1xxx_dbdma_put_source(u32 chanid, void *buf, int nbytes, u32 flags)
dma_cache_wback_inv((unsigned long)dp, sizeof(dp));
ctp->chan_ptr->ddma_dbell = 0;
/* Get next descriptor pointer.
*/
ctp->put_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
/* return something not zero.
*/
return nbytes;