Linux-2.6.12-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 00000000000..90cac609d9c
--- /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);
+        }
+}