1 files changed, 150 insertions, 0 deletions

diff --git a/drivers/ide/legacy/q40ide.c b/drivers/ide/legacy/q40ide.c
new file mode 100644
index 000000000000..2a78b792f7fb
--- /dev/null
+++ b/drivers/ide/legacy/q40ide.c
@@ -0,0 +1,150 @@
+/*
+ *  linux/drivers/ide/legacy/q40ide.c -- Q40 I/O port IDE Driver
+ *
+ *     (c) Richard Zidlicky
+ *
+ *  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/hdreg.h>
+
+#include <linux/ide.h>
+
+    /*
+     *  Bases of the IDE interfaces
+     */
+
+#define Q40IDE_NUM_HWIFS        2
+
+#define PCIDE_BASE1     0x1f0
+#define PCIDE_BASE2     0x170
+#define PCIDE_BASE3     0x1e8
+#define PCIDE_BASE4     0x168
+#define PCIDE_BASE5     0x1e0
+#define PCIDE_BASE6     0x160
+
+static const unsigned long pcide_bases[Q40IDE_NUM_HWIFS] = {
+    PCIDE_BASE1, PCIDE_BASE2, /* PCIDE_BASE3, PCIDE_BASE4  , PCIDE_BASE5,
+    PCIDE_BASE6 */
+};
+
+
+    /*
+     *  Offsets from one of the above bases
+     */
+
+/* used to do addr translation here but it is easier to do in setup ports */
+/*#define IDE_OFF_B(x)  ((unsigned long)Q40_ISA_IO_B((IDE_##x##_OFFSET)))*/
+
+#define IDE_OFF_B(x)    ((unsigned long)((IDE_##x##_OFFSET)))
+#define IDE_OFF_W(x)    ((unsigned long)((IDE_##x##_OFFSET)))
+
+static const int pcide_offsets[IDE_NR_PORTS] = {
+    IDE_OFF_W(DATA), IDE_OFF_B(ERROR), IDE_OFF_B(NSECTOR), IDE_OFF_B(SECTOR),
+    IDE_OFF_B(LCYL), IDE_OFF_B(HCYL), 6 /*IDE_OFF_B(CURRENT)*/, IDE_OFF_B(STATUS),
+    518/*IDE_OFF(CMD)*/
+};
+
+static int q40ide_default_irq(unsigned long base)
+{
+           switch (base) {
+                    case 0x1f0: return 14;
+                    case 0x170: return 15;
+                    case 0x1e8: return 11;
+                    default:
+                        return 0;
+           }
+}
+
+
+/*
+ * This is very similar to ide_setup_ports except that addresses
+ * are pretranslated for q40 ISA access
+ */
+void q40_ide_setup_ports ( hw_regs_t *hw,
+                        unsigned long base, int *offsets,
+                        unsigned long ctrl, unsigned long intr,
+                        ide_ack_intr_t *ack_intr,
+/*
+ *                      ide_io_ops_t *iops,
+ */
+                        int irq)
+{
+        int i;
+
+        for (i = 0; i < IDE_NR_PORTS; i++) {
+                /* BIG FAT WARNING: 
+                   assumption: only DATA port is ever used in 16 bit mode */
+                if ( i==0 )
+                        hw->io_ports[i] = Q40_ISA_IO_W(base + offsets[i]);
+                else
+                        hw->io_ports[i] = Q40_ISA_IO_B(base + offsets[i]);
+        }
+        
+        hw->irq = irq;
+        hw->dma = NO_DMA;
+        hw->ack_intr = ack_intr;
+/*
+ *      hw->iops = iops;
+ */
+}
+
+
+
+/* 
+ * the static array is needed to have the name reported in /proc/ioports,
+ * hwif->name unfortunately isnīt available yet
+ */
+static const char *q40_ide_names[Q40IDE_NUM_HWIFS]={
+        "ide0", "ide1"
+};
+
+/*
+ *  Probe for Q40 IDE interfaces
+ */
+
+void q40ide_init(void)
+{
+    int i;
+    ide_hwif_t *hwif;
+    int index;
+    const char *name;
+
+    if (!MACH_IS_Q40)
+      return ;
+
+    for (i = 0; i < Q40IDE_NUM_HWIFS; i++) {
+        hw_regs_t hw;
+
+        name = q40_ide_names[i];
+        if (!request_region(pcide_bases[i], 8, name)) {
+                printk("could not reserve ports %lx-%lx for %s\n",
+                       pcide_bases[i],pcide_bases[i]+8,name);
+                continue;
+        }
+        if (!request_region(pcide_bases[i]+0x206, 1, name)) {
+                printk("could not reserve port %lx for %s\n",
+                       pcide_bases[i]+0x206,name);
+                release_region(pcide_bases[i], 8);
+                continue;
+        }
+        q40_ide_setup_ports(&hw,(unsigned long) pcide_bases[i], (int *)pcide_offsets, 
+                        pcide_bases[i]+0x206, 
+                        0, NULL,
+//                      m68kide_iops,
+                        q40ide_default_irq(pcide_bases[i]));
+        index = ide_register_hw(&hw, &hwif);
+        // **FIXME**
+        if (index != -1)
+                hwif->mmio = 2;
+    }
+}
+