diff options
author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-21 22:57:23 +0400 |
---|---|---|
committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-21 22:57:23 +0400 |
commit | 2bfba3c444fe8b2ab1c38112a89d8f03b61136ca (patch) | |
tree | 17580eee63d868c9d6b97a6bc956a08f25631532 /drivers/ide/macide.c | |
parent | 2515ddc6db8eb49a79f0fe5e67ff09ac7c81eab4 (diff) | |
download | linux-2bfba3c444fe8b2ab1c38112a89d8f03b61136ca.tar.xz |
ide: remove useless subdirs from drivers/ide/
Suggested-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/macide.c')
-rw-r--r-- | drivers/ide/macide.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/drivers/ide/macide.c b/drivers/ide/macide.c new file mode 100644 index 000000000000..43f97cc1d30e --- /dev/null +++ b/drivers/ide/macide.c @@ -0,0 +1,131 @@ +/* + * Macintosh IDE Driver + * + * Copyright (C) 1998 by Michael Schmitz + * + * This driver was written based on information obtained from the MacOS IDE + * driver binary by Mikael Forselius + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + */ + +#include <linux/types.h> +#include <linux/mm.h> +#include <linux/interrupt.h> +#include <linux/blkdev.h> +#include <linux/delay.h> +#include <linux/ide.h> + +#include <asm/machw.h> +#include <asm/macintosh.h> +#include <asm/macints.h> +#include <asm/mac_baboon.h> + +#define IDE_BASE 0x50F1A000 /* Base address of IDE controller */ + +/* + * Generic IDE registers as offsets from the base + * These match MkLinux so they should be correct. + */ + +#define IDE_CONTROL 0x38 /* control/altstatus */ + +/* + * Mac-specific registers + */ + +/* + * this register is odd; it doesn't seem to do much and it's + * not word-aligned like virtually every other hardware register + * on the Mac... + */ + +#define IDE_IFR 0x101 /* (0x101) IDE interrupt flags on Quadra: + * + * Bit 0+1: some interrupt flags + * Bit 2+3: some interrupt enable + * Bit 4: ?? + * Bit 5: IDE interrupt flag (any hwif) + * Bit 6: maybe IDE interrupt enable (any hwif) ?? + * Bit 7: Any interrupt condition + */ + +volatile unsigned char *ide_ifr = (unsigned char *) (IDE_BASE + IDE_IFR); + +int macide_ack_intr(ide_hwif_t* hwif) +{ + if (*ide_ifr & 0x20) { + *ide_ifr &= ~0x20; + return 1; + } + return 0; +} + +static void __init macide_setup_ports(hw_regs_t *hw, unsigned long base, + int irq, ide_ack_intr_t *ack_intr) +{ + int i; + + memset(hw, 0, sizeof(*hw)); + + for (i = 0; i < 8; i++) + hw->io_ports_array[i] = base + i * 4; + + hw->io_ports.ctl_addr = base + IDE_CONTROL; + + hw->irq = irq; + hw->ack_intr = ack_intr; + + hw->chipset = ide_generic; +} + +static const char *mac_ide_name[] = + { "Quadra", "Powerbook", "Powerbook Baboon" }; + +/* + * Probe for a Macintosh IDE interface + */ + +static int __init macide_init(void) +{ + ide_ack_intr_t *ack_intr; + unsigned long base; + int irq; + hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL }; + + if (!MACH_IS_MAC) + return -ENODEV; + + switch (macintosh_config->ide_type) { + case MAC_IDE_QUADRA: + base = IDE_BASE; + ack_intr = macide_ack_intr; + irq = IRQ_NUBUS_F; + break; + case MAC_IDE_PB: + base = IDE_BASE; + ack_intr = macide_ack_intr; + irq = IRQ_NUBUS_C; + break; + case MAC_IDE_BABOON: + base = BABOON_BASE; + ack_intr = NULL; + irq = IRQ_BABOON_1; + break; + default: + return -ENODEV; + } + + printk(KERN_INFO "ide: Macintosh %s IDE controller\n", + mac_ide_name[macintosh_config->ide_type - 1]); + + macide_setup_ports(&hw, base, irq, ack_intr); + + return ide_host_add(NULL, hws, NULL); +} + +module_init(macide_init); + +MODULE_LICENSE("GPL"); |