LXR linux/arch/sparc/kernel/irq.h

   1#include <linux/platform_device.h>
   2
   3#include <asm/btfixup.h>
   4#include <asm/cpu_type.h>
   5
   6struct irq_bucket {
   7        struct irq_bucket *next;
   8        unsigned int real_irq;
   9        unsigned int irq;
  10        unsigned int pil;
  11};
  12
  13#define SUN4D_MAX_BOARD 10
  14#define SUN4D_MAX_IRQ ((SUN4D_MAX_BOARD + 2) << 5)
  15
  16/* Map between the irq identifier used in hw to the
  17 * irq_bucket. The map is sufficient large to hold
  18 * the sun4d hw identifiers.
  19 */
  20extern struct irq_bucket *irq_map[SUN4D_MAX_IRQ];
  21
  22
  23/* sun4m specific type definitions */
  24
  25/* This maps direct to CPU specific interrupt registers */
  26struct sun4m_irq_percpu {
  27        u32     pending;
  28        u32     clear;
  29        u32     set;
  30};
  31
  32/* This maps direct to global interrupt registers */
  33struct sun4m_irq_global {
  34        u32     pending;
  35        u32     mask;
  36        u32     mask_clear;
  37        u32     mask_set;
  38        u32     interrupt_target;
  39};
  40
  41extern struct sun4m_irq_percpu __iomem *sun4m_irq_percpu[SUN4M_NCPUS];
  42extern struct sun4m_irq_global __iomem *sun4m_irq_global;
  43
  44/*
  45 * Platform specific irq configuration
  46 * The individual platforms assign their platform
  47 * specifics in their init functions.
  48 */
  49struct sparc_irq_config {
  50        void (*init_timers)(irq_handler_t);
  51        unsigned int (*build_device_irq)(struct platform_device *op,
  52                                         unsigned int real_irq);
  53};
  54extern struct sparc_irq_config sparc_irq_config;
  55
  56unsigned int irq_alloc(unsigned int real_irq, unsigned int pil);
  57void irq_link(unsigned int irq);
  58void irq_unlink(unsigned int irq);
  59void handler_irq(unsigned int pil, struct pt_regs *regs);
  60
  61/* Dave Redman (djhr@tadpole.co.uk)
  62 * changed these to function pointers.. it saves cycles and will allow
  63 * the irq dependencies to be split into different files at a later date
  64 * sun4c_irq.c, sun4m_irq.c etc so we could reduce the kernel size.
  65 * Jakub Jelinek (jj@sunsite.mff.cuni.cz)
  66 * Changed these to btfixup entities... It saves cycles :)
  67 */
  68
  69BTFIXUPDEF_CALL(void, clear_clock_irq, void)
  70BTFIXUPDEF_CALL(void, load_profile_irq, int, unsigned int)
  71
  72static inline void clear_clock_irq(void)
  73{
  74        BTFIXUP_CALL(clear_clock_irq)();
  75}
  76
  77static inline void load_profile_irq(int cpu, int limit)
  78{
  79        BTFIXUP_CALL(load_profile_irq)(cpu, limit);
  80}
  81
  82#ifdef CONFIG_SMP
  83BTFIXUPDEF_CALL(void, set_cpu_int, int, int)
  84BTFIXUPDEF_CALL(void, clear_cpu_int, int, int)
  85BTFIXUPDEF_CALL(void, set_irq_udt, int)
  86
  87#define set_cpu_int(cpu,level) BTFIXUP_CALL(set_cpu_int)(cpu,level)
  88#define clear_cpu_int(cpu,level) BTFIXUP_CALL(clear_cpu_int)(cpu,level)
  89#define set_irq_udt(cpu) BTFIXUP_CALL(set_irq_udt)(cpu)
  90
  91/* All SUN4D IPIs are sent on this IRQ, may be shared with hard IRQs */
  92#define SUN4D_IPI_IRQ 13
  93
  94extern void sun4d_ipi_interrupt(void);
  95
  96#endif
  97