[src/trunk]: src/sys/dev/pci Add some byteswap ops around DMA descriptors for...

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

details:   https://anonhg.NetBSD.org/src/rev/eb2acf6b417e
branches:  trunk
changeset: 566891:eb2acf6b417e
user:      tsutsui <tsutsui%NetBSD.org@localhost>
date:      Sun May 23 11:37:25 2004 +0000

description:
Add some byteswap ops around DMA descriptors for big endian machines.
Tested on macppc by matthew green.

XXX This driver completely lacks bus_dmamap_sync(9) ops.

diffstat:

 sys/dev/pci/emuxki.c |  19 +++++++++----------
 1 files changed, 9 insertions(+), 10 deletions(-)

diffs (64 lines):

diff -r 0d6baa0fe785 -r eb2acf6b417e sys/dev/pci/emuxki.c
--- a/sys/dev/pci/emuxki.c      Sun May 23 11:18:28 2004 +0000
+++ b/sys/dev/pci/emuxki.c      Sun May 23 11:37:25 2004 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: emuxki.c,v 1.33 2004/04/23 21:13:06 itojun Exp $       */
+/*     $NetBSD: emuxki.c,v 1.34 2004/05/23 11:37:25 tsutsui Exp $      */
 
 /*-
  * Copyright (c) 2001 The NetBSD Foundation, Inc.
@@ -56,7 +56,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: emuxki.c,v 1.33 2004/04/23 21:13:06 itojun Exp $");
+__KERNEL_RCSID(0, "$NetBSD: emuxki.c,v 1.34 2004/05/23 11:37:25 tsutsui Exp $");
 
 #include <sys/param.h>
 #include <sys/device.h>
@@ -739,7 +739,7 @@
        silentpage = DMAADDR(sc->silentpage) << 1;
        ptb = KERNADDR(sc->ptb);
        for (i = 0; i < EMU_MAXPTE; i++)
-               ptb[i] = silentpage | i;
+               ptb[i] = htole32(silentpage | i);
 
        /* Write PTB address and set TCB to none */
        emuxki_write(sc, 0, EMU_PTB, DMAADDR(sc->ptb));
@@ -860,12 +860,12 @@
                numblocks++;
 
        for (i = 0; i < EMU_MAXPTE; i++)
-               if ((ptb[i] & EMU_CHAN_MAP_PTE_MASK) == silentpage) {
+               if ((le32toh(ptb[i]) & EMU_CHAN_MAP_PTE_MASK) == silentpage) {
                        /* We look for a free PTE */
                        s = splaudio();
                        for (j = 0; j < numblocks; j++)
-                               if ((ptb[i + j] & EMU_CHAN_MAP_PTE_MASK)
-                                   != silentpage)
+                               if ((le32toh(ptb[i + j])
+                                   & EMU_CHAN_MAP_PTE_MASK) != silentpage)
                                        break;
                        if (j == numblocks) {
                                if ((mem = emuxki_mem_new(sc, i,
@@ -875,9 +875,8 @@
                                }
                                for (j = 0; j < numblocks; j++)
                                        ptb[i + j] =
-                                               (((DMAADDR(mem->dmamem) +
-                                                j * EMU_PTESIZE)) << 1)
-                                               | (i + j);
+                                           htole32((((DMAADDR(mem->dmamem) +
+                                           j * EMU_PTESIZE)) << 1) | (i + j));
                                LIST_INSERT_HEAD(&(sc->mem), mem, next);
                                splx(s);
                                return (KERNADDR(mem->dmamem));
@@ -2050,7 +2049,7 @@
                                numblocks++;
                        for (i = 0; i < numblocks; i++)
                                ptb[mem->ptbidx + i] =
-                                       silentpage | (mem->ptbidx + i);
+                                   htole32(silentpage | (mem->ptbidx + i));
                }
                LIST_REMOVE(mem, next);
                splx(s);