Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 155 insertions, 0 deletions

diff --git a/drivers/ide/legacy/macide.c b/drivers/ide/legacy/macide.c
new file mode 100644
index 000000000000..90cac609d9cf
--- /dev/null
+++ b/drivers/ide/legacy/macide.c
@@ -0,0 +1,155 @@
+/*
+ *  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);
+	}
+}