arch/sparc/kernel/irq.h

   1 #include <linux/platform_device.h>
   2
   3 #include <asm/btfixup.h>
   4 #include <asm/cpu_type.h>
   5
   6 struct 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  */
  20 extern 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 */
  26 struct sun4m_irq_percpu {
  27         u32     pending;
  28         u32     clear;
  29         u32     set;
  30 };
  31
  32 /* This maps direct to global interrupt registers */
  33 struct sun4m_irq_global {
  34         u32     pending;
  35         u32     mask;
  36         u32     mask_clear;
  37         u32     mask_set;
  38         u32     interrupt_target;
  39 };
  40
  41 extern struct sun4m_irq_percpu __iomem *sun4m_irq_percpu[SUN4M_NCPUS];
  42 extern struct sun4m_irq_global __iomem *sun4m_irq_global;
  43
  44 /*
  45  * Platform specific configuration
  46  * The individual platforms assign their platform
  47  * specifics in their init functions.
  48  */
  49 struct sparc_config {
  50         void (*init_timers)(irq_handler_t);
  51         unsigned int (*build_device_irq)(struct platform_device *op,
  52                                          unsigned int real_irq);
  53 };
  54 extern struct sparc_config sparc_config;
  55
  56 unsigned int irq_alloc(unsigned int real_irq, unsigned int pil);
  57 void irq_link(unsigned int irq);
  58 void irq_unlink(unsigned int irq);
  59 void 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
  69 BTFIXUPDEF_CALL(void, clear_clock_irq, void)
  70 BTFIXUPDEF_CALL(void, load_profile_irq, int, unsigned int)
  71
  72 static inline void clear_clock_irq(void)
  73 {
  74         BTFIXUP_CALL(clear_clock_irq)();
  75 }
  76
  77 static inline void load_profile_irq(int cpu, int limit)
  78 {
  79         BTFIXUP_CALL(load_profile_irq)(cpu, limit);
  80 }
  81
  82 #ifdef CONFIG_SMP
  83 BTFIXUPDEF_CALL(void, set_cpu_int, int, int)
  84 BTFIXUPDEF_CALL(void, clear_cpu_int, int, int)
  85 BTFIXUPDEF_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
  94 extern void sun4d_ipi_interrupt(void);
  95
  96 #endif