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, 200 insertions, 0 deletions

diff --git a/arch/sh/boards/superh/microdev/irq.c b/arch/sh/boards/superh/microdev/irq.c
new file mode 100644
index 000000000000..1298883eca4b
--- /dev/null
+++ b/arch/sh/boards/superh/microdev/irq.c
@@ -0,0 +1,200 @@
+/*
+ * arch/sh/boards/superh/microdev/irq.c
+ *
+ * Copyright (C) 2003 Sean McGoogan (Sean.McGoogan@superh.com)
+ *
+ * SuperH SH4-202 MicroDev board support.
+ *
+ * May be copied or modified under the terms of the GNU General Public
+ * License.  See linux/COPYING for more information.
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/mach/irq.h>
+
+#define NUM_EXTERNAL_IRQS 16	/* IRL0 .. IRL15 */
+
+
+static const struct {
+	unsigned char fpgaIrq;
+	unsigned char mapped;
+	const char *name;
+} fpgaIrqTable[NUM_EXTERNAL_IRQS] = {
+	{ 0,				0,	"unused"   },		/* IRQ #0	IRL=15	0x200  */
+	{ MICRODEV_FPGA_IRQ_KEYBOARD,	1,	"keyboard" },		/* IRQ #1	IRL=14	0x220  */
+	{ MICRODEV_FPGA_IRQ_SERIAL1,	1,	"Serial #1"},		/* IRQ #2	IRL=13	0x240  */
+	{ MICRODEV_FPGA_IRQ_ETHERNET,	1,	"Ethernet" },		/* IRQ #3	IRL=12	0x260  */
+	{ MICRODEV_FPGA_IRQ_SERIAL2,	0,	"Serial #2"},		/* IRQ #4	IRL=11	0x280  */
+	{ 0,				0,	"unused"   },		/* IRQ #5	IRL=10	0x2a0  */
+	{ 0,				0,	"unused"   },		/* IRQ #6	IRL=9	0x2c0  */
+	{ MICRODEV_FPGA_IRQ_USB_HC,	1,	"USB"	   },		/* IRQ #7	IRL=8	0x2e0  */
+	{ MICRODEV_IRQ_PCI_INTA,	1,	"PCI INTA" },		/* IRQ #8	IRL=7	0x300  */
+	{ MICRODEV_IRQ_PCI_INTB,	1,	"PCI INTB" },		/* IRQ #9	IRL=6	0x320  */
+	{ MICRODEV_IRQ_PCI_INTC,	1,	"PCI INTC" },		/* IRQ #10	IRL=5	0x340  */
+	{ MICRODEV_IRQ_PCI_INTD,	1,	"PCI INTD" },		/* IRQ #11	IRL=4	0x360  */
+	{ MICRODEV_FPGA_IRQ_MOUSE,	1,	"mouse"    },		/* IRQ #12	IRL=3	0x380  */
+	{ MICRODEV_FPGA_IRQ_IDE2,	1,	"IDE #2"   },		/* IRQ #13	IRL=2	0x3a0  */
+	{ MICRODEV_FPGA_IRQ_IDE1,	1,	"IDE #1"   },		/* IRQ #14	IRL=1	0x3c0  */
+	{ 0,				0,	"unused"   },		/* IRQ #15	IRL=0	0x3e0  */
+};
+
+#if (MICRODEV_LINUX_IRQ_KEYBOARD != 1)
+#  error Inconsistancy in defining the IRQ# for Keyboard!
+#endif
+
+#if (MICRODEV_LINUX_IRQ_ETHERNET != 3)
+#  error Inconsistancy in defining the IRQ# for Ethernet!
+#endif
+
+#if (MICRODEV_LINUX_IRQ_USB_HC != 7)
+#  error Inconsistancy in defining the IRQ# for USB!
+#endif
+
+#if (MICRODEV_LINUX_IRQ_MOUSE != 12)
+#  error Inconsistancy in defining the IRQ# for PS/2 Mouse!
+#endif
+
+#if (MICRODEV_LINUX_IRQ_IDE2 != 13)
+#  error Inconsistancy in defining the IRQ# for secondary IDE!
+#endif
+
+#if (MICRODEV_LINUX_IRQ_IDE1 != 14)
+#  error Inconsistancy in defining the IRQ# for primary IDE!
+#endif
+
+static void enable_microdev_irq(unsigned int irq);
+static void disable_microdev_irq(unsigned int irq);
+
+	/* shutdown is same as "disable" */
+#define shutdown_microdev_irq disable_microdev_irq
+
+static void mask_and_ack_microdev(unsigned int);
+static void end_microdev_irq(unsigned int irq);
+
+static unsigned int startup_microdev_irq(unsigned int irq)
+{
+	enable_microdev_irq(irq);
+	return 0;		/* never anything pending */
+}
+
+static struct hw_interrupt_type microdev_irq_type = {
+	"MicroDev-IRQ",
+	startup_microdev_irq,
+	shutdown_microdev_irq,
+	enable_microdev_irq,
+	disable_microdev_irq,
+	mask_and_ack_microdev,
+	end_microdev_irq
+};
+
+static void disable_microdev_irq(unsigned int irq)
+{
+	unsigned int flags;
+	unsigned int fpgaIrq;
+
+	if (irq >= NUM_EXTERNAL_IRQS) return;
+	if (!fpgaIrqTable[irq].mapped) return;
+
+	fpgaIrq = fpgaIrqTable[irq].fpgaIrq;
+
+		/* disable interrupts */
+	local_irq_save(flags);
+
+		/* disable interupts on the FPGA INTC register */
+	ctrl_outl(MICRODEV_FPGA_INTC_MASK(fpgaIrq), MICRODEV_FPGA_INTDSB_REG);
+
+		/* restore interrupts */
+	local_irq_restore(flags);
+}
+
+static void enable_microdev_irq(unsigned int irq)
+{
+	unsigned long priorityReg, priorities, pri;
+	unsigned int flags;
+	unsigned int fpgaIrq;
+
+
+	if (irq >= NUM_EXTERNAL_IRQS) return;
+	if (!fpgaIrqTable[irq].mapped) return;
+
+	pri = 15 - irq;
+
+	fpgaIrq = fpgaIrqTable[irq].fpgaIrq;
+	priorityReg = MICRODEV_FPGA_INTPRI_REG(fpgaIrq);
+
+		/* disable interrupts */
+	local_irq_save(flags);
+
+		/* set priority for the interrupt */
+	priorities = ctrl_inl(priorityReg);
+	priorities &= ~MICRODEV_FPGA_INTPRI_MASK(fpgaIrq);
+	priorities |= MICRODEV_FPGA_INTPRI_LEVEL(fpgaIrq, pri);
+	ctrl_outl(priorities, priorityReg);
+
+		/* enable interupts on the FPGA INTC register */
+	ctrl_outl(MICRODEV_FPGA_INTC_MASK(fpgaIrq), MICRODEV_FPGA_INTENB_REG);
+
+		/* restore interrupts */
+	local_irq_restore(flags);
+}
+
+	/* This functions sets the desired irq handler to be a MicroDev type */
+static void __init make_microdev_irq(unsigned int irq)
+{
+	disable_irq_nosync(irq);
+	irq_desc[irq].handler = &microdev_irq_type;
+	disable_microdev_irq(irq);
+}
+
+static void mask_and_ack_microdev(unsigned int irq)
+{
+	disable_microdev_irq(irq);
+}
+
+static void end_microdev_irq(unsigned int irq)
+{
+	if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
+	{
+		enable_microdev_irq(irq);
+	}
+}
+
+extern void __init init_microdev_irq(void)
+{
+	int i;
+
+		/* disable interupts on the FPGA INTC register */
+	ctrl_outl(~0ul, MICRODEV_FPGA_INTDSB_REG);
+
+	for (i = 0; i < NUM_EXTERNAL_IRQS; i++)
+	{
+		make_microdev_irq(i);
+	}
+}
+
+extern void microdev_print_fpga_intc_status(void)
+{
+	volatile unsigned int * const intenb = (unsigned int*)MICRODEV_FPGA_INTENB_REG;
+	volatile unsigned int * const intdsb = (unsigned int*)MICRODEV_FPGA_INTDSB_REG;
+	volatile unsigned int * const intpria = (unsigned int*)MICRODEV_FPGA_INTPRI_REG(0);
+	volatile unsigned int * const intprib = (unsigned int*)MICRODEV_FPGA_INTPRI_REG(8);
+	volatile unsigned int * const intpric = (unsigned int*)MICRODEV_FPGA_INTPRI_REG(16);
+	volatile unsigned int * const intprid = (unsigned int*)MICRODEV_FPGA_INTPRI_REG(24);
+	volatile unsigned int * const intsrc = (unsigned int*)MICRODEV_FPGA_INTSRC_REG;
+	volatile unsigned int * const intreq = (unsigned int*)MICRODEV_FPGA_INTREQ_REG;
+
+	printk("-------------------------- microdev_print_fpga_intc_status() ------------------\n");
+	printk("FPGA_INTENB = 0x%08x\n", *intenb);
+	printk("FPGA_INTDSB = 0x%08x\n", *intdsb);
+	printk("FPGA_INTSRC = 0x%08x\n", *intsrc);
+	printk("FPGA_INTREQ = 0x%08x\n", *intreq);
+	printk("FPGA_INTPRI[3..0] = %08x:%08x:%08x:%08x\n", *intprid, *intpric, *intprib, *intpria);
+	printk("-------------------------------------------------------------------------------\n");
+}
+
+