arch/sparc/kernel/irq.h

   1 #include <linux/platform_device.h>
   2
   3 #include <asm/cpu_type.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 SUN4M_HARD_INT(x)       (0x000000001 << (x))
  13 #define SUN4M_SOFT_INT(x)       (0x000010000 << (x))
  14
  15 #define SUN4D_MAX_BOARD 10
  16 #define SUN4D_MAX_IRQ ((SUN4D_MAX_BOARD + 2) << 5)
  17
  18 /* Map between the irq identifier used in hw to the
  19  * irq_bucket. The map is sufficient large to hold
  20  * the sun4d hw identifiers.
  21  */
  22 extern struct irq_bucket *irq_map[SUN4D_MAX_IRQ];
  23
  24
  25 /* sun4m specific type definitions */
  26
  27 /* This maps direct to CPU specific interrupt registers */
  28 struct sun4m_irq_percpu {
  29         u32     pending;
  30         u32     clear;
  31         u32     set;
  32 };
  33
  34 /* This maps direct to global interrupt registers */
  35 struct sun4m_irq_global {
  36         u32     pending;
  37         u32     mask;
  38         u32     mask_clear;
  39         u32     mask_set;
  40         u32     interrupt_target;
  41 };
  42
  43 extern struct sun4m_irq_percpu __iomem *sun4m_irq_percpu[SUN4M_NCPUS];
  44 extern struct sun4m_irq_global __iomem *sun4m_irq_global;
  45
  46 /* The following definitions describe the individual platform features: */
  47 #define FEAT_L10_CLOCKSOURCE (1 << 0) /* L10 timer is used as a clocksource */
  48 #define FEAT_L10_CLOCKEVENT  (1 << 1) /* L10 timer is used as a clockevent */
  49 #define FEAT_L14_ONESHOT     (1 << 2) /* L14 timer clockevent can oneshot */
  50
  51 /*
  52  * Platform specific configuration
  53  * The individual platforms assign their platform
  54  * specifics in their init functions.
  55  */
  56 struct sparc_config {
  57         void (*init_timers)(void);
  58         unsigned int (*build_device_irq)(struct platform_device *op,
  59                                          unsigned int real_irq);
  60
  61         /* generic clockevent features - see FEAT_* above */
  62         int features;
  63
  64         /* clock rate used for clock event timer */
  65         int clock_rate;
  66
  67         /* one period for clock source timer */
  68         unsigned int cs_period;
  69
  70         /* function to obtain offsett for cs period */
  71         unsigned int (*get_cycles_offset)(void);
  72
  73         void (*clear_clock_irq)(void);
  74         void (*load_profile_irq)(int cpu, unsigned int limit);
  75 };
  76 extern struct sparc_config sparc_config;
  77
  78 unsigned int irq_alloc(unsigned int real_irq, unsigned int pil);
  79 void irq_link(unsigned int irq);
  80 void irq_unlink(unsigned int irq);
  81 void handler_irq(unsigned int pil, struct pt_regs *regs);
  82
  83 unsigned long leon_get_irqmask(unsigned int irq);
  84
  85 #ifdef CONFIG_SMP
  86
  87 /* All SUN4D IPIs are sent on this IRQ, may be shared with hard IRQs */
  88 #define SUN4D_IPI_IRQ 13
  89
  90 extern void sun4d_ipi_interrupt(void);
  91
  92 #endif