/* * 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");