patch-2.3.40 linux/include/asm-arm/arch-sa1100/ide.h

• Lines: 99
• Date: Mon Jan 17 22:22:52 2000
• Orig file: v2.3.39/linux/include/asm-arm/arch-sa1100/ide.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.39/linux/include/asm-arm/arch-sa1100/ide.h linux/include/asm-arm/arch-sa1100/ide.h
@@ -0,0 +1,98 @@
+/*
+ * linux/include/asm-arm/arch-sa1100/ide.h
+ *
+ * Copyright (c) 1998 Hugo Fiennes & Nicolas Pitre
+ *
+ */
+
+#include <linux/config.h>
+
+#ifdef CONFIG_BLK_DEV_IDE
+
+#include <asm/irq.h>
+#include <asm/arch/hardware.h>
+
+/*
+ * Set up a hw structure for a specified data port, control port and IRQ.
+ * This should follow whatever the default interface uses.
+ */
+static __inline__ void
+ide_init_hwif_ports(hw_regs_t *hw, int data_port, int ctrl_port, int irq)
+{
+	ide_ioreg_t reg;
+	int i;
+
+	memset(hw, 0, sizeof(*hw));
+
+#ifdef CONFIG_SA1100_EMPEG
+/* The Empeg board has the first two address lines unused */
+#define IO_SHIFT 2
+#else
+#define IO_SHIFT 0
+#endif
+
+	reg = (ide_ioreg_t) (data_port << IO_SHIFT);
+	for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
+		hw->io_ports[i] = reg;
+		reg += (1 << IO_SHIFT);
+	}
+	hw->io_ports[IDE_CONTROL_OFFSET] = (ide_ioreg_t) (ctrl_port << IO_SHIFT);
+	hw->irq = irq;
+}
+
+/*
+ * This registers the standard ports for this architecture with the IDE
+ * driver.
+ */
+static __inline__ void
+ide_init_default_hwifs(void)
+{
+	hw_regs_t hw;
+
+#if defined( CONFIG_SA1100_EMPEG )
+	/* First, do the SA1100 setup */
+
+	/* PCMCIA IO space */
+	MECR=0x21062106;
+
+        /* Issue 3 is much neater than issue 2 */
+	GPDR&=~(EMPEG_IDE1IRQ|EMPEG_IDE2IRQ);
+
+	/* Interrupts on rising edge: lines are inverted before they get to
+           the SA */
+	GRER&=~(EMPEG_IDE1IRQ|EMPEG_IDE2IRQ);
+	GFER|=(EMPEG_IDE1IRQ|EMPEG_IDE2IRQ);
+
+	/* Take hard drives out of reset */
+	GPSR=(EMPEG_IDERESET);
+
+	/* Clear GEDR */
+	GEDR=0xffffffff;
+
+	/* Sonja and her successors have two IDE ports. */
+	/* MAC 23/4/1999, swap these round so that the left hand
+	   hard disk is hda when viewed from the front. This
+	   doesn't match the silkscreen however. */
+	ide_init_hwif_ports(&hw,0x10,0x1e,EMPEG_IRQ_IDE2);
+	ide_register_hw(&hw, NULL);
+	ide_init_hwif_ports(&hw,0x00,0x0e,EMPEG_IRQ_IDE1);
+	ide_register_hw(&hw, NULL);
+
+#elif defined( CONFIG_SA1100_VICTOR )
+	/* Enable appropriate GPIOs as interrupt lines */
+	GPDR &= ~GPIO_GPIO7;
+	GRER |= GPIO_GPIO7;
+	GFER &= ~GPIO_GPIO7;
+	GEDR = GPIO_GPIO7;
+	/* set the pcmcia interface timing */
+	MECR = 0x00060006;
+
+	ide_init_hwif_ports(&hw, 0x1f0, 0x3f6, IRQ_GPIO7);
+	ide_register_hw(&hw, NULL);
+#else
+#error Missing IDE interface definition in include/asm/arch/ide.h
+#endif
+}
+
+#endif
+