#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/threads.h>
+#include <linux/bitops.h>
-#include <asm/bitops.h>
#include <asm/delay.h>
#include <asm/intrinsics.h>
#include <asm/io.h>
#define IRQ_DEBUG 0
/* default base addr of IPI table */
-unsigned long ipi_base_addr = (__IA64_UNCACHED_OFFSET | IA64_IPI_DEFAULT_BASE_ADDR);
+void __iomem *ipi_base_addr = ((void __iomem *)
+ (__IA64_UNCACHED_OFFSET | IA64_IPI_DEFAULT_BASE_ADDR));
/*
* Legacy IRQ to IA-64 vector translation table.
};
EXPORT_SYMBOL(isa_irq_to_vector_map);
-static inline void
-irq_enter (void)
-{
- preempt_count() += HARDIRQ_OFFSET;
-}
+static unsigned long ia64_vector_mask[BITS_TO_LONGS(IA64_NUM_DEVICE_VECTORS)];
-static inline void
-irq_exit (void)
+int
+assign_irq_vector (int irq)
{
- preempt_count() -= IRQ_EXIT_OFFSET;
- if (!in_interrupt() && local_softirq_pending())
- do_softirq();
- preempt_enable_no_resched();
+ int pos, vector;
+ again:
+ pos = find_first_zero_bit(ia64_vector_mask, IA64_NUM_DEVICE_VECTORS);
+ vector = IA64_FIRST_DEVICE_VECTOR + pos;
+ if (vector > IA64_LAST_DEVICE_VECTOR)
+ return -ENOSPC;
+ if (test_and_set_bit(pos, ia64_vector_mask))
+ goto again;
+ return vector;
}
-int
-assign_irq_vector (int irq)
+void
+free_irq_vector (int vector)
{
- static int next_vector = IA64_FIRST_DEVICE_VECTOR;
+ int pos;
- if (next_vector > IA64_LAST_DEVICE_VECTOR)
- /* XXX could look for sharable vectors instead of panic'ing... */
- panic("assign_irq_vector: out of interrupt vectors!");
- return next_vector++;
-}
+ if (vector < IA64_FIRST_DEVICE_VECTOR || vector > IA64_LAST_DEVICE_VECTOR)
+ return;
-extern unsigned int do_IRQ(unsigned long irq, struct pt_regs *regs);
+ pos = vector - IA64_FIRST_DEVICE_VECTOR;
+ if (!test_and_clear_bit(pos, ia64_vector_mask))
+ printk(KERN_WARNING "%s: double free!\n", __FUNCTION__);
+}
#ifdef CONFIG_SMP
# define IS_RESCHEDULE(vec) (vec == IA64_IPI_RESCHEDULE)
* switched atomically.
*/
bsp = ia64_getreg(_IA64_REG_AR_BSP);
- sp = ia64_getreg(_IA64_REG_AR_SP);
+ sp = ia64_getreg(_IA64_REG_SP);
if ((sp - bsp) < 1024) {
static unsigned char count;
ia64_setreg(_IA64_REG_CR_TPR, vector);
ia64_srlz_d();
- do_IRQ(local_vector_to_irq(vector), regs);
+ __do_IRQ(local_vector_to_irq(vector), regs);
/*
* Disable interrupts and send EOI:
* Probably could shared code.
*/
vectors_in_migration[local_vector_to_irq(vector)]=0;
- do_IRQ(local_vector_to_irq(vector), NULL);
+ __do_IRQ(local_vector_to_irq(vector), NULL);
/*
* Disable interrupts and send EOI
void
ia64_send_ipi (int cpu, int vector, int delivery_mode, int redirect)
{
- unsigned long ipi_addr;
+ void __iomem *ipi_addr;
unsigned long ipi_data;
unsigned long phys_cpu_id;
*/
ipi_data = (delivery_mode << 8) | (vector & 0xff);
- ipi_addr = ipi_base_addr | (phys_cpu_id << 4) | ((redirect & 1) << 3);
+ ipi_addr = ipi_base_addr + ((phys_cpu_id << 4) | ((redirect & 1) << 3));
writeq(ipi_data, ipi_addr);
}