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   1 #ifndef __ASM_IA64_IOSAPIC_H
   2 #define __ASM_IA64_IOSAPIC_H
   3
   4 #define IOSAPIC_REG_SELECT      0x0
   5 #define IOSAPIC_WINDOW          0x10
   6 #define IOSAPIC_EOI             0x40
   7
   8 #define IOSAPIC_VERSION         0x1
   9
  10 /*
  11  * Redirection table entry
  12  */
  13 #define IOSAPIC_RTE_LOW(i)      (0x10+i*2)
  14 #define IOSAPIC_RTE_HIGH(i)     (0x11+i*2)
  15
  16 #define IOSAPIC_DEST_SHIFT              16
  17
  18 /*
  19  * Delivery mode
  20  */
  21 #define IOSAPIC_DELIVERY_SHIFT          8
  22 #define IOSAPIC_FIXED                   0x0
  23 #define IOSAPIC_LOWEST_PRIORITY 0x1
  24 #define IOSAPIC_PMI                     0x2
  25 #define IOSAPIC_NMI                     0x4
  26 #define IOSAPIC_INIT                    0x5
  27 #define IOSAPIC_EXTINT                  0x7
  28
  29 /*
  30  * Interrupt polarity
  31  */
  32 #define IOSAPIC_POLARITY_SHIFT          13
  33 #define IOSAPIC_POL_HIGH                0
  34 #define IOSAPIC_POL_LOW         1
  35
  36 /*
  37  * Trigger mode
  38  */
  39 #define IOSAPIC_TRIGGER_SHIFT           15
  40 #define IOSAPIC_EDGE                    0
  41 #define IOSAPIC_LEVEL                   1
  42
  43 /*
  44  * Mask bit
  45  */
  46
  47 #define IOSAPIC_MASK_SHIFT              16
  48 #define IOSAPIC_MASK                    (1<<IOSAPIC_MASK_SHIFT)
  49
  50 #ifndef __ASSEMBLY__
  51
  52 #ifdef CONFIG_IOSAPIC
  53
  54 #define NR_IOSAPICS                     256
  55
  56 static inline unsigned int iosapic_read(char __iomem *iosapic, unsigned int reg)
  57 {
  58         writel(reg, iosapic + IOSAPIC_REG_SELECT);
  59         return readl(iosapic + IOSAPIC_WINDOW);
  60 }
  61
  62 static inline void iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
  63 {
  64         writel(reg, iosapic + IOSAPIC_REG_SELECT);
  65         writel(val, iosapic + IOSAPIC_WINDOW);
  66 }
  67
  68 static inline void iosapic_eoi(char __iomem *iosapic, u32 vector)
  69 {
  70         writel(vector, iosapic + IOSAPIC_EOI);
  71 }
  72
  73 extern void __init iosapic_system_init (int pcat_compat);
  74 extern int __devinit iosapic_init (unsigned long address,
  75                                     unsigned int gsi_base);
  76 #ifdef CONFIG_HOTPLUG
  77 extern int iosapic_remove (unsigned int gsi_base);
  78 #else
  79 #define iosapic_remove(gsi_base)                                (-EINVAL)
  80 #endif /* CONFIG_HOTPLUG */
  81 extern int gsi_to_vector (unsigned int gsi);
  82 extern int gsi_to_irq (unsigned int gsi);
  83 extern int iosapic_register_intr (unsigned int gsi, unsigned long polarity,
  84                                   unsigned long trigger);
  85 extern void iosapic_unregister_intr (unsigned int irq);
  86 extern void __init iosapic_override_isa_irq (unsigned int isa_irq, unsigned int gsi,
  87                                       unsigned long polarity,
  88                                       unsigned long trigger);
  89 extern int __init iosapic_register_platform_intr (u32 int_type,
  90                                            unsigned int gsi,
  91                                            int pmi_vector,
  92                                            u16 eid, u16 id,
  93                                            unsigned long polarity,
  94                                            unsigned long trigger);
  95 extern unsigned int iosapic_version (char __iomem *addr);
  96
  97 #ifdef CONFIG_NUMA
  98 extern void __devinit map_iosapic_to_node (unsigned int, int);
  99 #endif
 100 #else
 101 #define iosapic_system_init(pcat_compat)                        do { } while (0)
 102 #define iosapic_init(address,gsi_base)                          (-EINVAL)
 103 #define iosapic_remove(gsi_base)                                (-ENODEV)
 104 #define iosapic_register_intr(gsi,polarity,trigger)             (gsi)
 105 #define iosapic_unregister_intr(irq)                            do { } while (0)
 106 #define iosapic_override_isa_irq(isa_irq,gsi,polarity,trigger)  do { } while (0)
 107 #define iosapic_register_platform_intr(type,gsi,pmi,eid,id, \
 108         polarity,trigger)                                       (gsi)
 109 #endif
 110
 111 # endif /* !__ASSEMBLY__ */
 112 #endif /* __ASM_IA64_IOSAPIC_H */