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Use information provided by <machine/hp300spu.h> to determine if we

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might have a physical address cache.
This commit is contained in:
thorpej 1997-04-27 21:02:34 +00:00
parent 650df29d4d
commit 772891accd
1 changed files with 23 additions and 9 deletions
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32
sys/arch/hp300/dev/dma.c
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@ -1,4 +1,4 @@
/* $NetBSD: dma.c,v 1.17 1997/04/14 02:33:18 thorpej Exp $ */
/* $NetBSD: dma.c,v 1.18 1997/04/27 21:02:34 thorpej Exp $ */
/*
* Copyright (c) 1995, 1996, 1997
@ -41,6 +41,8 @@
* DMA driver
*/
#include <machine/hp300spu.h> /* XXX param.h includes cpu.h */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/time.h>
@ -273,7 +275,8 @@ dmafree(dq)
#endif
DMA_CLEAR(dc);
#if defined(HP340) || defined(HP360) || defined(HP370) || defined(HP375) || defined(HP380)
#if defined(CACHE_HAVE_PAC) || defined(M68040)
/*
* XXX we may not always go thru the flush code in dmastop()
*/
@ -282,7 +285,8 @@ dmafree(dq)
dc->dm_flags &= ~DMAF_PCFLUSH;
}
#endif
#if defined(HP320) || defined(HP350)
#if defined(CACHE_HAVE_VAC)
if (dc->dm_flags & DMAF_VCFLUSH) {
/*
* 320/350s have VACs that may also need flushing.
@ -297,6 +301,7 @@ dmafree(dq)
dc->dm_flags &= ~DMAF_VCFLUSH;
}
#endif
/*
* Channel is now free. Look for another job to run on this
* channel.
@ -334,10 +339,12 @@ dmago(unit, addr, count, flags)
if (count > MAXPHYS)
panic("dmago: count > MAXPHYS");
#if defined(HP320)
if (sc->sc_type == DMA_B && (flags & DMAGO_LWORD))
panic("dmago: no can do 32-bit DMA");
#endif
#ifdef DEBUG
if (dmadebug & DDB_FOLLOW)
printf("dmago(%d, %p, %x, %x)\n",
@ -354,7 +361,7 @@ dmago(unit, addr, count, flags)
*/
for (seg = 0; count > 0; seg++) {
dc->dm_chain[seg].dc_addr = (char *) kvtop(addr);
#if defined(HP380)
#if defined(M68040)
/*
* Push back dirty cache lines
*/
@ -411,7 +418,8 @@ dmago(unit, addr, count, flags)
dc->dm_cmd |= DMA_WORD;
if (flags & DMAGO_PRI)
dc->dm_cmd |= DMA_PRI;
#if defined(HP380)
#if defined(M68040)
/*
* On the 68040 we need to flush (push) the data cache before a
* DMA (already done above) and flush again after DMA completes.
@ -422,7 +430,8 @@ dmago(unit, addr, count, flags)
if (mmutype == MMU_68040 && (flags & DMAGO_READ))
dc->dm_flags |= DMAF_PCFLUSH;
#endif
#if defined(HP340) || defined(HP360) || defined(HP370) || defined(HP375)
#if defined(CACHE_HAVE_PAC)
/*
* Remember if we need to flush external physical cache when
* DMA is done. We only do this if we are reading (writing memory).
@ -430,10 +439,12 @@ dmago(unit, addr, count, flags)
if (ectype == EC_PHYS && (flags & DMAGO_READ))
dc->dm_flags |= DMAF_PCFLUSH;
#endif
#if defined(HP320) || defined(HP350)
#if defined(CACHE_HAVE_VAC)
if (ectype == EC_VIRT && (flags & DMAGO_READ))
dc->dm_flags |= DMAF_VCFLUSH;
#endif
/*
* Remember if we can skip the dma completion interrupt on
* the last segment in the chain.
@ -474,13 +485,15 @@ dmastop(unit)
dmatimo[unit] = 0;
#endif
DMA_CLEAR(dc);
#if defined(HP340) || defined(HP360) || defined(HP370) || defined(HP375) || defined(HP380)
#if defined(CACHE_HAVE_PAC) || defined(M68040)
if (dc->dm_flags & DMAF_PCFLUSH) {
PCIA();
dc->dm_flags &= ~DMAF_PCFLUSH;
}
#endif
#if defined(HP320) || defined(HP350)
#if defined(CACHE_HAVE_VAC)
if (dc->dm_flags & DMAF_VCFLUSH) {
/*
* 320/350s have VACs that may also need flushing.
@ -495,6 +508,7 @@ dmastop(unit)
dc->dm_flags &= ~DMAF_VCFLUSH;
}
#endif
/*
* We may get this interrupt after a device service routine
* has freed the dma channel. So, ignore the intr if there's