patch-2.4.21 linux-2.4.21/drivers/ide/legacy/q40ide.c

• Lines: 151
• Date: 2003-06-13 07:51:33.000000000 -0700
• Orig file: linux-2.4.20/drivers/ide/legacy/q40ide.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.20/drivers/ide/legacy/q40ide.c linux-2.4.21/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 ide_ioreg_t 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)	((ide_ioreg_t)((IDE_##x##_OFFSET)))
+#define IDE_OFF_W(x)	((ide_ioreg_t)((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(ide_ioreg_t 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,
+			ide_ioreg_t base, int *offsets,
+			ide_ioreg_t ctrl, ide_ioreg_t 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, (ide_ioreg_t)pcide_bases[i],
+			(int *)pcide_offsets,
+			(ide_ioreg_t)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;
+    }
+}
+