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, 255 insertions, 0 deletions

diff --git a/arch/h8300/kernel/ints.c b/arch/h8300/kernel/ints.c
new file mode 100644
index 000000000000..edb3c4170013
--- /dev/null
+++ b/arch/h8300/kernel/ints.c
@@ -0,0 +1,255 @@
+/*
+ * linux/arch/h8300/platform/h8300h/ints.c
+ *
+ * Yoshinori Sato <ysato@users.sourceforge.jp>
+ *
+ * Based on linux/arch/$(ARCH)/platform/$(PLATFORM)/ints.c
+ *
+ * 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.
+ *
+ * Copyright 1996 Roman Zippel
+ * Copyright 1999 D. Jeff Dionne <jeff@rt-control.com>
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/kernel_stat.h>
+#include <linux/seq_file.h>
+#include <linux/init.h>
+#include <linux/random.h>
+#include <linux/bootmem.h>
+#include <linux/hardirq.h>
+
+#include <asm/system.h>
+#include <asm/irq.h>
+#include <asm/traps.h>
+#include <asm/io.h>
+#include <asm/setup.h>
+#include <asm/errno.h>
+
+/*
+ * This structure has only 4 elements for speed reasons
+ */
+typedef struct irq_handler {
+        irqreturn_t (*handler)(int, void *, struct pt_regs *);
+        int         flags;
+        int         count;
+        void        *dev_id;
+        const char  *devname;
+} irq_handler_t;
+
+static irq_handler_t *irq_list[NR_IRQS];
+static int use_kmalloc;
+
+extern unsigned long *interrupt_redirect_table;
+extern const int h8300_saved_vectors[];
+extern const unsigned long h8300_trap_table[];
+int h8300_enable_irq_pin(unsigned int irq);
+void h8300_disable_irq_pin(unsigned int irq);
+
+#define CPU_VECTOR ((unsigned long *)0x000000)
+#define ADDR_MASK (0xffffff)
+
+#if defined(CONFIG_RAMKERNEL)
+static unsigned long __init *get_vector_address(void)
+{
+        unsigned long *rom_vector = CPU_VECTOR;
+        unsigned long base,tmp;
+        int vec_no;
+
+        base = rom_vector[EXT_IRQ0] & ADDR_MASK;
+        
+        /* check romvector format */
+        for (vec_no = EXT_IRQ1; vec_no <= EXT_IRQ0+EXT_IRQS; vec_no++) {
+                if ((base+(vec_no - EXT_IRQ0)*4) != (rom_vector[vec_no] & ADDR_MASK))
+                        return NULL;
+        }
+
+        /* ramvector base address */
+        base -= EXT_IRQ0*4;
+
+        /* writerble check */
+        tmp = ~(*(volatile unsigned long *)base);
+        (*(volatile unsigned long *)base) = tmp;
+        if ((*(volatile unsigned long *)base) != tmp)
+                return NULL;
+        return (unsigned long *)base;
+}
+#endif
+
+void __init init_IRQ(void)
+{
+#if defined(CONFIG_RAMKERNEL)
+        int i;
+        unsigned long *ramvec,*ramvec_p;
+        const unsigned long *trap_entry;
+        const int *saved_vector;
+
+        ramvec = get_vector_address();
+        if (ramvec == NULL)
+                panic("interrupt vector serup failed.");
+        else
+                printk(KERN_INFO "virtual vector at 0x%08lx\n",(unsigned long)ramvec);
+
+        /* create redirect table */
+        ramvec_p = ramvec;
+        trap_entry = h8300_trap_table;
+        saved_vector = h8300_saved_vectors;
+        for ( i = 0; i < NR_IRQS; i++) {
+                if (i == *saved_vector) {
+                        ramvec_p++;
+                        saved_vector++;
+                } else {
+                        if ( i < NR_TRAPS ) {
+                                if (*trap_entry)
+                                        *ramvec_p = VECTOR(*trap_entry);
+                                ramvec_p++;
+                                trap_entry++;
+                        } else
+                                *ramvec_p++ = REDIRECT(interrupt_entry);
+                }
+        }
+        interrupt_redirect_table = ramvec;
+#ifdef DUMP_VECTOR
+        ramvec_p = ramvec;
+        for (i = 0; i < NR_IRQS; i++) {
+                if ((i % 8) == 0)
+                        printk(KERN_DEBUG "\n%p: ",ramvec_p);
+                printk(KERN_DEBUG "%p ",*ramvec_p);
+                ramvec_p++;
+        }
+        printk(KERN_DEBUG "\n");
+#endif
+#endif
+}
+
+int request_irq(unsigned int irq, 
+                irqreturn_t (*handler)(int, void *, struct pt_regs *),
+                unsigned long flags, const char *devname, void *dev_id)
+{
+        irq_handler_t *irq_handle;
+        if (irq < 0 || irq >= NR_IRQS) {
+                printk(KERN_ERR "Incorrect IRQ %d from %s\n", irq, devname);
+                return -EINVAL;
+        }
+
+        if (irq_list[irq] || (h8300_enable_irq_pin(irq) == -EBUSY))
+                return -EBUSY;
+
+        if (use_kmalloc)
+                irq_handle = (irq_handler_t *)kmalloc(sizeof(irq_handler_t), GFP_ATOMIC);
+        else {
+                /* use bootmem allocater */
+                irq_handle = (irq_handler_t *)alloc_bootmem(sizeof(irq_handler_t));
+                irq_handle = (irq_handler_t *)((unsigned long)irq_handle | 0x80000000);
+        }
+
+        if (irq_handle == NULL)
+                return -ENOMEM;
+
+        irq_handle->handler = handler;
+        irq_handle->flags   = flags;
+        irq_handle->count   = 0;
+        irq_handle->dev_id  = dev_id;
+        irq_handle->devname = devname;
+        irq_list[irq] = irq_handle;
+
+        if (irq_handle->flags & SA_SAMPLE_RANDOM)
+                rand_initialize_irq(irq);
+
+        enable_irq(irq);
+        return 0;
+}
+
+EXPORT_SYMBOL(request_irq);
+
+void free_irq(unsigned int irq, void *dev_id)
+{
+        if (irq >= NR_IRQS)
+                return;
+
+        if (!irq_list[irq] || irq_list[irq]->dev_id != dev_id)
+                printk(KERN_WARNING "Removing probably wrong IRQ %d from %s\n",
+                       irq, irq_list[irq]->devname);
+        disable_irq(irq);
+        h8300_disable_irq_pin(irq);
+        if (((unsigned long)irq_list[irq] & 0x80000000) == 0) {
+                kfree(irq_list[irq]);
+                irq_list[irq] = NULL;
+        }
+}
+
+EXPORT_SYMBOL(free_irq);
+
+/*
+ * Do we need these probe functions on the m68k?
+ */
+unsigned long probe_irq_on (void)
+{
+        return 0;
+}
+
+EXPORT_SYMBOL(probe_irq_on);
+
+int probe_irq_off (unsigned long irqs)
+{
+        return 0;
+}
+
+EXPORT_SYMBOL(probe_irq_off);
+
+void enable_irq(unsigned int irq)
+{
+        if (irq >= EXT_IRQ0 && irq <= (EXT_IRQ0 + EXT_IRQS))
+                IER_REGS |= 1 << (irq - EXT_IRQ0);
+}
+
+void disable_irq(unsigned int irq)
+{
+        if (irq >= EXT_IRQ0 && irq <= (EXT_IRQ0 + EXT_IRQS))
+                IER_REGS &= ~(1 << (irq - EXT_IRQ0));
+}
+
+asmlinkage void process_int(int irq, struct pt_regs *fp)
+{
+        irq_enter();
+        h8300_clear_isr(irq);
+        if (irq >= NR_TRAPS && irq < NR_IRQS) {
+                if (irq_list[irq]) {
+                        irq_list[irq]->handler(irq, irq_list[irq]->dev_id, fp);
+                        irq_list[irq]->count++;
+                        if (irq_list[irq]->flags & SA_SAMPLE_RANDOM)
+                                add_interrupt_randomness(irq);
+                }
+        } else {
+                BUG();
+        }
+        irq_exit();
+}
+
+int show_interrupts(struct seq_file *p, void *v)
+{
+        int i = *(loff_t *) v;
+
+        if ((i < NR_IRQS) && (irq_list[i]!=NULL)) {
+                seq_printf(p, "%3d: %10u ",i,irq_list[i]->count);
+                seq_printf(p, "%s\n", irq_list[i]->devname);
+        }
+
+        return 0;
+}
+
+void init_irq_proc(void)
+{
+}
+
+static int __init enable_kmalloc(void)
+{
+        use_kmalloc = 1;
+        return 0;
+}
+core_initcall(enable_kmalloc);