include/asm-parisc/iosapic.h

   1 /*
   2 ** This file is private to iosapic driver.
   3 ** If stuff needs to be used by another driver, move it to a common file.
   4 **
   5 ** WARNING: fields most data structures here are ordered to make sure
   6 **          they pack nicely for 64-bit compilation. (ie sizeof(long) == 8)
   7 */
   8
   9
  10 /*
  11 ** I/O SAPIC init function
  12 ** Caller knows where an I/O SAPIC is. LBA has an integrated I/O SAPIC.
  13 ** Call setup as part of per instance initialization.
  14 ** (ie *not* init_module() function unless only one is present.)
  15 ** fixup_irq is to initialize PCI IRQ line support and
  16 ** virtualize pcidev->irq value. To be called by pci_fixup_bus().
  17 */
  18 extern void *iosapic_register(unsigned long hpa);
  19 extern int iosapic_fixup_irq(void *obj, struct pci_dev *pcidev);
  20
  21
  22 #ifdef __IA64__
  23 /*
  24 ** PA: PIB (Processor Interrupt Block) is handled by Runway bus adapter.
  25 **     and is hardcoded to 0xfeeNNNN0 where NNNN is id_eid field.
  26 **
  27 ** IA64: PIB is handled by "Local SAPIC" (integrated in the processor).
  28 */
  29 struct local_sapic_info {
  30         struct local_sapic_info *lsi_next;      /* point to next CPU info */
  31         int                     *lsi_cpu_id;    /* point to logical CPU id */
  32         unsigned long           *lsi_id_eid;    /* point to IA-64 CPU id */
  33         int                     *lsi_status;    /* point to CPU status   */
  34         void                    *lsi_private;   /* point to special info */
  35 };
  36
  37 /*
  38 ** "root" data structure which ties everything together.
  39 ** Should always be able to start with sapic_root and locate
  40 ** the desired information.
  41 */
  42 struct sapic_info {
  43         struct sapic_info       *si_next;       /* info is per cell */
  44         int                     si_cellid;      /* cell id */
  45         unsigned int            si_status;       /* status  */
  46         char                    *si_pib_base;   /* intr blk base address */
  47         local_sapic_info_t      *si_local_info;
  48         io_sapic_info_t         *si_io_info;
  49         extint_info_t           *si_extint_info;/* External Intr info      */
  50 };
  51
  52 #endif /* IA64 */
  53