m68k/mac: Enable PDMA for PowerBook 500 series

I can confirm that mac_scsi PDMA now works on these machines.
This increases sequential read throughput by a factor of 4.5.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

diff --git a/arch/m68k/include/asm/macintosh.h b/arch/m68k/include/asm/macintosh.h
index 9b840c0..08cee11 100644 (file)
--- a/arch/m68k/include/asm/macintosh.h
+++ b/arch/m68k/include/asm/macintosh.h
@@ -57,7 +57,6 @@ struct mac_model
 #define MAC_SCSI_IIFX          5
 #define MAC_SCSI_DUO           6
 #define MAC_SCSI_LC            7
-#define MAC_SCSI_LATE          8
 
 #define MAC_IDE_NONE           0
 #define MAC_IDE_QUADRA         1

diff --git a/arch/m68k/mac/config.c b/arch/m68k/mac/config.c
index e522307..d468a9d 100644 (file)
--- a/arch/m68k/mac/config.c
+++ b/arch/m68k/mac/config.c
@@ -709,7 +709,7 @@ static struct mac_model mac_data_table[] = {
                .name           = "PowerBook 520",
                .adb_type       = MAC_ADB_PB2,
                .via_type       = MAC_VIA_QUADRA,
-               .scsi_type      = MAC_SCSI_LATE,
+               .scsi_type      = MAC_SCSI_OLD,
                .scc_type       = MAC_SCC_QUADRA,
                .ether_type     = MAC_ETHER_SONIC,
                .floppy_type    = MAC_FLOPPY_SWIM_ADDR2,
@@ -943,18 +943,6 @@ static const struct resource mac_scsi_old_rsrc[] __initconst = {
        },
 };
 
-static const struct resource mac_scsi_late_rsrc[] __initconst = {
-       {
-               .flags = IORESOURCE_IRQ,
-               .start = IRQ_MAC_SCSI,
-               .end   = IRQ_MAC_SCSI,
-       }, {
-               .flags = IORESOURCE_MEM,
-               .start = 0x50010000,
-               .end   = 0x50011FFF,
-       },
-};
-
 static const struct resource mac_scsi_ccl_rsrc[] __initconst = {
        {
                .flags = IORESOURCE_IRQ,
@@ -1064,11 +1052,6 @@ int __init mac_platform_init(void)
                platform_device_register_simple("mac_scsi", 0,
                        mac_scsi_old_rsrc, ARRAY_SIZE(mac_scsi_old_rsrc));
                break;
-       case MAC_SCSI_LATE:
-               /* 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;
        case MAC_SCSI_LC:
                /* Addresses from Mac LC data in Designing Cards & Drivers 3ed.
                 * Also from the Developer Notes for Classic II, LC III,