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authorFinn Thain <fthain@linux-m68k.org>2021-06-10 04:15:06 +0300
committerJens Axboe <axboe@kernel.dk>2021-06-11 01:30:11 +0300
commitcabd10be0b9e4bf043dc828321875b937b2aa7ca (patch)
tree701af3ad92e03ac7ee8bf666139d938cf09a829b /arch/m68k/mac
parent5c8121262484d99bffb598f39a0df445cecd8efb (diff)
downloadlinux-cabd10be0b9e4bf043dc828321875b937b2aa7ca.tar.xz
m68k/mac: Replace macide driver with generic platform drivers
This allows m68k mac systems to switch from the deprecated IDE subsystem to libata. This was tested on my Quadra 630. I haven't tested it on my PowerBook 150 because I don't have a RAM adapter board for it. It appears that the hardware I tested doesn't need macide_clear_irq() or macide_test_irq(). If it did, the generic driver would not have worked. It's possible that those routines are needed for the PowerBook 150 but we can cross that bridge if and when we come to it. BTW, macide_clear_irq() appears to suffer from a race condition. The write to the interrupt flags register could have unintended side effects as it may alter other flag bits. Fortunately, all of the other bits are unused by Linux. When tested on my Quadra 630, the assignment *ide_ifr &= ~0x20 was observed to have no effect on bit 5, so it may be redundant anyway. Cc: Michael Schmitz <schmitzmic@gmail.com> Cc: Joshua Thompson <funaho@jurai.org> Reviewed-by: Michael Schmitz <schmitzmic@gmail.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Finn Thain <fthain@linux-m68k.org> Link: https://lore.kernel.org/r/11a56b3317df3bb2ddc15fd29b40b6820e9c7444.1623287706.git.fthain@linux-m68k.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'arch/m68k/mac')
-rw-r--r--arch/m68k/mac/config.c24
1 files changed, 14 insertions, 10 deletions
diff --git a/arch/m68k/mac/config.c b/arch/m68k/mac/config.c
index 1cdac959bd91..5d16f9b47aa9 100644
--- a/arch/m68k/mac/config.c
+++ b/arch/m68k/mac/config.c
@@ -933,13 +933,15 @@ static const struct resource mac_scsi_ccl_rsrc[] __initconst = {
},
};
-static const struct resource mac_ide_quadra_rsrc[] __initconst = {
- DEFINE_RES_MEM(0x50F1A000, 0x104),
+static const struct resource mac_pata_quadra_rsrc[] __initconst = {
+ DEFINE_RES_MEM(0x50F1A000, 0x38),
+ DEFINE_RES_MEM(0x50F1A038, 0x04),
DEFINE_RES_IRQ(IRQ_NUBUS_F),
};
-static const struct resource mac_ide_pb_rsrc[] __initconst = {
- DEFINE_RES_MEM(0x50F1A000, 0x104),
+static const struct resource mac_pata_pb_rsrc[] __initconst = {
+ DEFINE_RES_MEM(0x50F1A000, 0x38),
+ DEFINE_RES_MEM(0x50F1A038, 0x04),
DEFINE_RES_IRQ(IRQ_NUBUS_C),
};
@@ -949,7 +951,7 @@ static const struct resource mac_pata_baboon_rsrc[] __initconst = {
DEFINE_RES_IRQ(IRQ_BABOON_1),
};
-static const struct pata_platform_info mac_pata_baboon_data __initconst = {
+static const struct pata_platform_info mac_pata_data __initconst = {
.ioport_shift = 2,
};
@@ -1067,17 +1069,19 @@ int __init mac_platform_init(void)
switch (macintosh_config->ide_type) {
case MAC_IDE_QUADRA:
- platform_device_register_simple("mac_ide", -1,
- mac_ide_quadra_rsrc, ARRAY_SIZE(mac_ide_quadra_rsrc));
+ platform_device_register_resndata(NULL, "pata_platform", -1,
+ mac_pata_quadra_rsrc, ARRAY_SIZE(mac_pata_quadra_rsrc),
+ &mac_pata_data, sizeof(mac_pata_data));
break;
case MAC_IDE_PB:
- platform_device_register_simple("mac_ide", -1,
- mac_ide_pb_rsrc, ARRAY_SIZE(mac_ide_pb_rsrc));
+ platform_device_register_resndata(NULL, "pata_platform", -1,
+ mac_pata_pb_rsrc, ARRAY_SIZE(mac_pata_pb_rsrc),
+ &mac_pata_data, sizeof(mac_pata_data));
break;
case MAC_IDE_BABOON:
platform_device_register_resndata(NULL, "pata_platform", -1,
mac_pata_baboon_rsrc, ARRAY_SIZE(mac_pata_baboon_rsrc),
- &mac_pata_baboon_data, sizeof(mac_pata_baboon_data));
+ &mac_pata_data, sizeof(mac_pata_data));
break;
}