[src/trunk]: src/sys/dev/pci Make PCI IDE DMA work on big-endian systems.

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/5767af2cfe03
branches:  trunk
changeset: 472343:5767af2cfe03
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Wed Apr 28 00:18:12 1999 +0000

description:
Make PCI IDE DMA work on big-endian systems.

diffstat:

 sys/dev/pci/pciide.c |  23 ++++++++++++++++-------
 1 files changed, 16 insertions(+), 7 deletions(-)

diffs (49 lines):

diff -r 5b6e2425eec9 -r 5767af2cfe03 sys/dev/pci/pciide.c
--- a/sys/dev/pci/pciide.c      Tue Apr 27 21:32:05 1999 +0000
+++ b/sys/dev/pci/pciide.c      Wed Apr 28 00:18:12 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pciide.c,v 1.34 1999/04/06 17:49:14 bouyer Exp $       */
+/*     $NetBSD: pciide.c,v 1.35 1999/04/28 00:18:12 thorpej Exp $      */
 
 /*
  * Copyright (c) 1996, 1998 Christopher G. Demetriou.  All rights reserved.
@@ -79,6 +79,15 @@
 #include <dev/ic/wdcreg.h>
 #include <dev/ic/wdcvar.h>
 
+#if BYTE_ORDER == BIG_ENDIAN
+#include <machine/bswap.h> 
+#define        htopci(x)       bswap32(x)
+#define        pcitoh(x)       bswap32(x)
+#else 
+#define        htopci(x)       (x)
+#define        pcitoh(x)       (x)
+#endif
+
 /* inlines for reading/writing 8-bit PCI registers */
 static __inline u_int8_t pciide_pci_read __P((pci_chipset_tag_t, pcitag_t,
                int));
@@ -882,17 +891,17 @@
                }
 #endif
                dma_maps->dma_table[seg].base_addr =
-                   dma_maps->dmamap_xfer->dm_segs[seg].ds_addr;
+                   htopci(dma_maps->dmamap_xfer->dm_segs[seg].ds_addr);
                dma_maps->dma_table[seg].byte_count =
-                   dma_maps->dmamap_xfer->dm_segs[seg].ds_len &
-                   IDEDMA_BYTE_COUNT_MASK;
+                   htopci(dma_maps->dmamap_xfer->dm_segs[seg].ds_len &
+                   IDEDMA_BYTE_COUNT_MASK);
                WDCDEBUG_PRINT(("\t seg %d len %d addr 0x%x\n",
-                  seg, dma_maps->dma_table[seg].byte_count,
-                  dma_maps->dma_table[seg].base_addr), DEBUG_DMA);
+                  seg, pcitoh(dma_maps->dma_table[seg].byte_count),
+                  pcitoh(dma_maps->dma_table[seg].base_addr)), DEBUG_DMA);
 
        }
        dma_maps->dma_table[dma_maps->dmamap_xfer->dm_nsegs -1].byte_count |=
-               IDEDMA_BYTE_COUNT_EOT;
+           htopci(IDEDMA_BYTE_COUNT_EOT);
 
        bus_dmamap_sync(sc->sc_dmat, dma_maps->dmamap_table, 0,
            dma_maps->dmamap_table->dm_mapsize,