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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>
This commit is contained in:
Finn Thain 2018-05-25 17:34:36 +10:00 committed by Geert Uytterhoeven
parent d72e90f33a
commit cf85d89562
2 changed files with 1 additions and 19 deletions
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1
arch/m68k/include/asm/macintosh.h
View File

@ -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

19
arch/m68k/mac/config.c
View File

@ -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,