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-rw-r--r--drivers/ide/legacy/macide.c155
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diff --git a/drivers/ide/legacy/macide.c b/drivers/ide/legacy/macide.c
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+++ b/drivers/ide/legacy/macide.c
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+/*
+ * linux/drivers/ide/legacy/macide.c -- 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/config.h>
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/blkdev.h>
+#include <linux/hdreg.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_DATA 0x00
+#define IDE_ERROR 0x04 /* see err-bits */
+#define IDE_NSECTOR 0x08 /* nr of sectors to read/write */
+#define IDE_SECTOR 0x0c /* starting sector */
+#define IDE_LCYL 0x10 /* starting cylinder */
+#define IDE_HCYL 0x14 /* high byte of starting cyl */
+#define IDE_SELECT 0x18 /* 101dhhhh , d=drive, hhhh=head */
+#define IDE_STATUS 0x1c /* see status-bits */
+#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);
+
+static int macide_offsets[IDE_NR_PORTS] = {
+ IDE_DATA, IDE_ERROR, IDE_NSECTOR, IDE_SECTOR, IDE_LCYL,
+ IDE_HCYL, IDE_SELECT, IDE_STATUS, IDE_CONTROL
+};
+
+int macide_ack_intr(ide_hwif_t* hwif)
+{
+ if (*ide_ifr & 0x20) {
+ *ide_ifr &= ~0x20;
+ return 1;
+ }
+ return 0;
+}
+
+#ifdef CONFIG_BLK_DEV_MAC_MEDIABAY
+static void macide_mediabay_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ int state = baboon->mb_status & 0x04;
+
+ printk(KERN_INFO "macide: media bay %s detected\n", state? "removal":"insertion");
+}
+#endif
+
+/*
+ * Probe for a Macintosh IDE interface
+ */
+
+void macide_init(void)
+{
+ hw_regs_t hw;
+ ide_hwif_t *hwif;
+ int index = -1;
+
+ switch (macintosh_config->ide_type) {
+ case MAC_IDE_QUADRA:
+ ide_setup_ports(&hw, IDE_BASE, macide_offsets,
+ 0, 0, macide_ack_intr,
+// quadra_ide_iops,
+ IRQ_NUBUS_F);
+ index = ide_register_hw(&hw, &hwif);
+ break;
+ case MAC_IDE_PB:
+ ide_setup_ports(&hw, IDE_BASE, macide_offsets,
+ 0, 0, macide_ack_intr,
+// macide_pb_iops,
+ IRQ_NUBUS_C);
+ index = ide_register_hw(&hw, &hwif);
+ break;
+ case MAC_IDE_BABOON:
+ ide_setup_ports(&hw, BABOON_BASE, macide_offsets,
+ 0, 0, NULL,
+// macide_baboon_iops,
+ IRQ_BABOON_1);
+ index = ide_register_hw(&hw, &hwif);
+ if (index == -1) break;
+ if (macintosh_config->ident == MAC_MODEL_PB190) {
+
+ /* Fix breakage in ide-disk.c: drive capacity */
+ /* is not initialized for drives without a */
+ /* hardware ID, and we can't get that without */
+ /* probing the drive which freezes a 190. */
+
+ ide_drive_t *drive = &ide_hwifs[index].drives[0];
+ drive->capacity64 = drive->cyl*drive->head*drive->sect;
+
+#ifdef CONFIG_BLK_DEV_MAC_MEDIABAY
+ request_irq(IRQ_BABOON_2, macide_mediabay_interrupt,
+ IRQ_FLG_FAST, "mediabay",
+ macide_mediabay_interrupt);
+#endif
+ }
+ break;
+
+ default:
+ return;
+ }
+
+ if (index != -1) {
+ hwif->mmio = 2;
+ if (macintosh_config->ide_type == MAC_IDE_QUADRA)
+ printk(KERN_INFO "ide%d: Macintosh Quadra IDE interface\n", index);
+ else if (macintosh_config->ide_type == MAC_IDE_PB)
+ printk(KERN_INFO "ide%d: Macintosh Powerbook IDE interface\n", index);
+ else if (macintosh_config->ide_type == MAC_IDE_BABOON)
+ printk(KERN_INFO "ide%d: Macintosh Powerbook Baboon IDE interface\n", index);
+ else
+ printk(KERN_INFO "ide%d: Unknown Macintosh IDE interface\n", index);
+ }
+}