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, 186 insertions, 0 deletions

diff --git a/drivers/ide/legacy/gayle.c b/drivers/ide/legacy/gayle.c
new file mode 100644
index 000000000000..3fac3e9ec47d
--- /dev/null
+++ b/drivers/ide/legacy/gayle.c
@@ -0,0 +1,186 @@
+/*
+ *  linux/drivers/ide/legacy/gayle.c -- Amiga Gayle IDE Driver
+ *
+ *     Created 9 Jul 1997 by Geert Uytterhoeven
+ *
+ *  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/ide.h>
+#include <linux/init.h>
+#include <linux/zorro.h>
+
+#include <asm/setup.h>
+#include <asm/amigahw.h>
+#include <asm/amigaints.h>
+#include <asm/amigayle.h>
+
+
+    /*
+     *  Bases of the IDE interfaces
+     */
+
+#define GAYLE_BASE_4000 0xdd2020        /* A4000/A4000T */
+#define GAYLE_BASE_1200 0xda0000        /* A1200/A600 and E-Matrix 530 */
+
+    /*
+     *  Offsets from one of the above bases
+     */
+
+#define GAYLE_DATA      0x00
+#define GAYLE_ERROR     0x06            /* see err-bits */
+#define GAYLE_NSECTOR   0x0a            /* nr of sectors to read/write */
+#define GAYLE_SECTOR    0x0e            /* starting sector */
+#define GAYLE_LCYL      0x12            /* starting cylinder */
+#define GAYLE_HCYL      0x16            /* high byte of starting cyl */
+#define GAYLE_SELECT    0x1a            /* 101dhhhh , d=drive, hhhh=head */
+#define GAYLE_STATUS    0x1e            /* see status-bits */
+#define GAYLE_CONTROL   0x101a
+
+static int gayle_offsets[IDE_NR_PORTS] __initdata = {
+    GAYLE_DATA, GAYLE_ERROR, GAYLE_NSECTOR, GAYLE_SECTOR, GAYLE_LCYL,
+    GAYLE_HCYL, GAYLE_SELECT, GAYLE_STATUS, -1, -1
+};
+
+
+    /*
+     *  These are at different offsets from the base
+     */
+
+#define GAYLE_IRQ_4000  0xdd3020        /* MSB = 1, Harddisk is source of */
+#define GAYLE_IRQ_1200  0xda9000        /* interrupt */
+
+
+    /*
+     *  Offset of the secondary port for IDE doublers
+     *  Note that GAYLE_CONTROL is NOT available then!
+     */
+
+#define GAYLE_NEXT_PORT 0x1000
+
+#ifndef CONFIG_BLK_DEV_IDEDOUBLER
+#define GAYLE_NUM_HWIFS         1
+#define GAYLE_NUM_PROBE_HWIFS   GAYLE_NUM_HWIFS
+#define GAYLE_HAS_CONTROL_REG   1
+#define GAYLE_IDEREG_SIZE       0x2000
+#else /* CONFIG_BLK_DEV_IDEDOUBLER */
+#define GAYLE_NUM_HWIFS         2
+#define GAYLE_NUM_PROBE_HWIFS   (ide_doubler ? GAYLE_NUM_HWIFS : \
+                                               GAYLE_NUM_HWIFS-1)
+#define GAYLE_HAS_CONTROL_REG   (!ide_doubler)
+#define GAYLE_IDEREG_SIZE       (ide_doubler ? 0x1000 : 0x2000)
+int ide_doubler = 0;    /* support IDE doublers? */
+#endif /* CONFIG_BLK_DEV_IDEDOUBLER */
+
+
+    /*
+     *  Check and acknowledge the interrupt status
+     */
+
+static int gayle_ack_intr_a4000(ide_hwif_t *hwif)
+{
+    unsigned char ch;
+
+    ch = z_readb(hwif->io_ports[IDE_IRQ_OFFSET]);
+    if (!(ch & GAYLE_IRQ_IDE))
+        return 0;
+    return 1;
+}
+
+static int gayle_ack_intr_a1200(ide_hwif_t *hwif)
+{
+    unsigned char ch;
+
+    ch = z_readb(hwif->io_ports[IDE_IRQ_OFFSET]);
+    if (!(ch & GAYLE_IRQ_IDE))
+        return 0;
+    (void)z_readb(hwif->io_ports[IDE_STATUS_OFFSET]);
+    z_writeb(0x7c, hwif->io_ports[IDE_IRQ_OFFSET]);
+    return 1;
+}
+
+    /*
+     *  Probe for a Gayle IDE interface (and optionally for an IDE doubler)
+     */
+
+void __init gayle_init(void)
+{
+    int a4000, i;
+
+    if (!MACH_IS_AMIGA)
+        return;
+
+    if ((a4000 = AMIGAHW_PRESENT(A4000_IDE)) || AMIGAHW_PRESENT(A1200_IDE))
+        goto found;
+
+#ifdef CONFIG_ZORRO
+    if (zorro_find_device(ZORRO_PROD_MTEC_VIPER_MK_V_E_MATRIX_530_SCSI_IDE,
+                          NULL))
+        goto found;
+#endif
+    return;
+
+found:
+    for (i = 0; i < GAYLE_NUM_PROBE_HWIFS; i++) {
+        unsigned long base, ctrlport, irqport;
+        ide_ack_intr_t *ack_intr;
+        hw_regs_t hw;
+        ide_hwif_t *hwif;
+        int index;
+        unsigned long phys_base, res_start, res_n;
+
+        if (a4000) {
+            phys_base = GAYLE_BASE_4000;
+            irqport = (unsigned long)ZTWO_VADDR(GAYLE_IRQ_4000);
+            ack_intr = gayle_ack_intr_a4000;
+        } else {
+            phys_base = GAYLE_BASE_1200;
+            irqport = (unsigned long)ZTWO_VADDR(GAYLE_IRQ_1200);
+            ack_intr = gayle_ack_intr_a1200;
+        }
+/*
+ * FIXME: we now have selectable modes between mmio v/s iomio
+ */
+
+        phys_base += i*GAYLE_NEXT_PORT;
+
+        res_start = ((unsigned long)phys_base) & ~(GAYLE_NEXT_PORT-1);
+        res_n = GAYLE_IDEREG_SIZE;
+
+        if (!request_mem_region(res_start, res_n, "IDE"))
+            continue;
+
+        base = (unsigned long)ZTWO_VADDR(phys_base);
+        ctrlport = GAYLE_HAS_CONTROL_REG ? (base + GAYLE_CONTROL) : 0;
+
+        ide_setup_ports(&hw, base, gayle_offsets,
+                        ctrlport, irqport, ack_intr,
+//                      &gayle_iops,
+                        IRQ_AMIGA_PORTS);
+
+        index = ide_register_hw(&hw, &hwif);
+        if (index != -1) {
+            hwif->mmio = 2;
+            switch (i) {
+                case 0:
+                    printk("ide%d: Gayle IDE interface (A%d style)\n", index,
+                           a4000 ? 4000 : 1200);
+                    break;
+#ifdef CONFIG_BLK_DEV_IDEDOUBLER
+                case 1:
+                    printk("ide%d: IDE doubler\n", index);
+                    break;
+#endif /* CONFIG_BLK_DEV_IDEDOUBLER */
+            }
+        } else
+            release_mem_region(res_start, res_n);
+    }
+}