arch/sparc/kernel/irq.h

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