i386/linux/linux-2.3.21/include/asm-i386/lithium.h

   1 #ifndef __I386_LITHIUM_H
   2 #define __I386_LITHIUM_H
   3
   4 #include <linux/config.h>
   5
   6 /*
   7  * Lithium is the I/O ASIC on the SGI 320 and 540 Visual Workstations
   8  */
   9
  10 #define LI_PCI_A_PHYS           0xfc000000      /* Enet is dev 3 */
  11 #define LI_PCI_B_PHYS           0xfd000000      /* PIIX4 is here */
  12
  13 /* see set_fixmap() and asm/fixmap.h */
  14 #define LI_PCIA_VADDR   (fix_to_virt(FIX_LI_PCIA))
  15 #define LI_PCIB_VADDR   (fix_to_virt(FIX_LI_PCIB))
  16
  17 /* Not a standard PCI? (not in linux/pci.h) */
  18 #define LI_PCI_BUSNUM   0x44                    /* lo8: primary, hi8: sub */
  19 #define LI_PCI_INTEN    0x46
  20
  21 #ifdef CONFIG_X86_VISWS_APIC
  22 /* More special purpose macros... */
  23 extern __inline void li_pcia_write16(unsigned long reg, unsigned short v)
  24 {
  25         *((volatile unsigned short *)(LI_PCIA_VADDR+reg))=v;
  26 }
  27
  28 extern __inline unsigned short li_pcia_read16(unsigned long reg)
  29 {
  30          return *((volatile unsigned short *)(LI_PCIA_VADDR+reg));
  31 }
  32
  33 extern __inline void li_pcib_write16(unsigned long reg, unsigned short v)
  34 {
  35         *((volatile unsigned short *)(LI_PCIB_VADDR+reg))=v;
  36 }
  37
  38 extern __inline unsigned short li_pcib_read16(unsigned long reg)
  39 {
  40         return *((volatile unsigned short *)(LI_PCIB_VADDR+reg));
  41 }
  42 #endif
  43
  44 #endif
  45