home *** CD-ROM | disk | FTP | other *** search
/ Mac Easy 2010 May / Mac Life Ubuntu.iso / casper / filesystem.squashfs / usr / src / linux-headers-2.6.28-15 / arch / ia64 / include / asm / iosapic.h < prev    next >
Encoding:
C/C++ Source or Header  |  2008-12-24  |  3.3 KB  |  127 lines
  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. #define IOSAPIC_VECTOR_MASK        0xffffff00
  51.  
  52. #ifndef __ASSEMBLY__
  53.  
  54. #ifdef CONFIG_IOSAPIC
  55.  
  56. #define NR_IOSAPICS            256
  57.  
  58. #ifdef CONFIG_PARAVIRT_GUEST
  59. #include <asm/paravirt.h>
  60. #else
  61. #define iosapic_pcat_compat_init    ia64_native_iosapic_pcat_compat_init
  62. #define __iosapic_read            __ia64_native_iosapic_read
  63. #define __iosapic_write            __ia64_native_iosapic_write
  64. #define iosapic_get_irq_chip        ia64_native_iosapic_get_irq_chip
  65. #endif
  66.  
  67. extern void __init ia64_native_iosapic_pcat_compat_init(void);
  68. extern struct irq_chip *ia64_native_iosapic_get_irq_chip(unsigned long trigger);
  69.  
  70. static inline unsigned int
  71. __ia64_native_iosapic_read(char __iomem *iosapic, unsigned int reg)
  72. {
  73.     writel(reg, iosapic + IOSAPIC_REG_SELECT);
  74.     return readl(iosapic + IOSAPIC_WINDOW);
  75. }
  76.  
  77. static inline void
  78. __ia64_native_iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
  79. {
  80.     writel(reg, iosapic + IOSAPIC_REG_SELECT);
  81.     writel(val, iosapic + IOSAPIC_WINDOW);
  82. }
  83.  
  84. static inline void iosapic_eoi(char __iomem *iosapic, u32 vector)
  85. {
  86.     writel(vector, iosapic + IOSAPIC_EOI);
  87. }
  88.  
  89. extern void __init iosapic_system_init (int pcat_compat);
  90. extern int __devinit iosapic_init (unsigned long address,
  91.                     unsigned int gsi_base);
  92. #ifdef CONFIG_HOTPLUG
  93. extern int iosapic_remove (unsigned int gsi_base);
  94. #else
  95. #define iosapic_remove(gsi_base)                (-EINVAL)
  96. #endif /* CONFIG_HOTPLUG */
  97. extern int gsi_to_irq (unsigned int gsi);
  98. extern int iosapic_register_intr (unsigned int gsi, unsigned long polarity,
  99.                   unsigned long trigger);
  100. extern void iosapic_unregister_intr (unsigned int irq);
  101. extern void __devinit iosapic_override_isa_irq (unsigned int isa_irq, unsigned int gsi,
  102.                       unsigned long polarity,
  103.                       unsigned long trigger);
  104. extern int __init iosapic_register_platform_intr (u32 int_type,
  105.                        unsigned int gsi,
  106.                        int pmi_vector,
  107.                        u16 eid, u16 id,
  108.                        unsigned long polarity,
  109.                        unsigned long trigger);
  110.  
  111. #ifdef CONFIG_NUMA
  112. extern void __devinit map_iosapic_to_node (unsigned int, int);
  113. #endif
  114. #else
  115. #define iosapic_system_init(pcat_compat)            do { } while (0)
  116. #define iosapic_init(address,gsi_base)                (-EINVAL)
  117. #define iosapic_remove(gsi_base)                (-ENODEV)
  118. #define iosapic_register_intr(gsi,polarity,trigger)        (gsi)
  119. #define iosapic_unregister_intr(irq)                do { } while (0)
  120. #define iosapic_override_isa_irq(isa_irq,gsi,polarity,trigger)    do { } while (0)
  121. #define iosapic_register_platform_intr(type,gsi,pmi,eid,id, \
  122.     polarity,trigger)                    (gsi)
  123. #endif
  124.  
  125. # endif /* !__ASSEMBLY__ */
  126. #endif /* __ASM_IA64_IOSAPIC_H */
  127.