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authorFinn Thain <fthain@telegraphics.com.au>2018-01-27 18:51:40 -0500
committerGeert Uytterhoeven <geert@linux-m68k.org>2018-03-19 10:22:59 +0100
commite5f0d2e2a153b18dcf31e1a633e210c37829d759 (patch)
treeddc62ec6a9d18f6e1df82fa50eae84dbd550ebfb /arch/m68k
parent0c8efd610b58cb23cefdfa12015799079aef94ae (diff)
downloadlinux-e5f0d2e2a153b18dcf31e1a633e210c37829d759.tar.bz2
m68k/mac: Enable PDMA support for PowerBook 190
Stan's tests showed that PDMA improves sequential read performance by a factor of 5 on a PowerBook 190. Last time I tried this on a PowerBook 520 it didn't work, so let's not enable it there until it can be tested with the present mac_scsi driver. Tested-by: Stan Johnson <userm57@yahoo.com> Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'arch/m68k')
-rw-r--r--arch/m68k/mac/config.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/m68k/mac/config.c b/arch/m68k/mac/config.c
index d3d435248a24..7890a8425710 100644
--- a/arch/m68k/mac/config.c
+++ b/arch/m68k/mac/config.c
@@ -699,7 +699,7 @@ static struct mac_model mac_data_table[] = {
.name = "PowerBook 190",
.adb_type = MAC_ADB_PB2,
.via_type = MAC_VIA_QUADRA,
- .scsi_type = MAC_SCSI_LATE,
+ .scsi_type = MAC_SCSI_OLD,
.ide_type = MAC_IDE_BABOON,
.scc_type = MAC_SCC_QUADRA,
.floppy_type = MAC_FLOPPY_SWIM_ADDR2,
@@ -1061,9 +1061,7 @@ int __init mac_platform_init(void)
mac_scsi_old_rsrc, ARRAY_SIZE(mac_scsi_old_rsrc));
break;
case MAC_SCSI_LATE:
- /* PDMA logic in 68040 PowerBooks is somehow different to
- * '030 models. It's probably more like Quadras (see mac_esp).
- */
+ /* XXX PDMA support for PowerBook 500 series needs testing */
platform_device_register_simple("mac_scsi", 0,
mac_scsi_late_rsrc, ARRAY_SIZE(mac_scsi_late_rsrc));
break;