arch/sparc/include/asm/upa.h

   1 #ifndef _SPARC64_UPA_H
   2 #define _SPARC64_UPA_H
   3
   4 #include <asm/asi.h>
   5
   6 /* UPA level registers and defines. */
   7
   8 /* UPA Config Register */
   9 #define UPA_CONFIG_RESV         0xffffffffc0000000 /* Reserved.                    */
  10 #define UPA_CONFIG_PCON         0x000000003fc00000 /* Depth of various sys queues. */
  11 #define UPA_CONFIG_MID          0x00000000003e0000 /* Module ID.                   */
  12 #define UPA_CONFIG_PCAP         0x000000000001ffff /* Port Capabilities.           */
  13
  14 /* UPA Port ID Register */
  15 #define UPA_PORTID_FNP          0xff00000000000000 /* Hardcoded to 0xfc on ultra.  */
  16 #define UPA_PORTID_RESV         0x00fffff800000000 /* Reserved.                    */
  17 #define UPA_PORTID_ECCVALID     0x0000000400000000 /* Zero if mod can generate ECC */
  18 #define UPA_PORTID_ONEREAD      0x0000000200000000 /* Set if mod generates P_RASB  */
  19 #define UPA_PORTID_PINTRDQ      0x0000000180000000 /* # outstanding P_INT_REQ's    */
  20 #define UPA_PORTID_PREQDQ       0x000000007e000000 /* slave-wr's to mod supported  */
  21 #define UPA_PORTID_PREQRD       0x0000000001e00000 /* # incoming P_REQ's supported */
  22 #define UPA_PORTID_UPACAP       0x00000000001f0000 /* UPA capabilities of mod      */
  23 #define UPA_PORTID_ID           0x000000000000ffff /* Module Identification bits  */
  24
  25 /* UPA I/O space accessors */
  26 #if defined(__KERNEL__) && !defined(__ASSEMBLY__)
  27 static inline unsigned char _upa_readb(unsigned long addr)
  28 {
  29         unsigned char ret;
  30
  31         __asm__ __volatile__("lduba\t[%1] %2, %0\t/* upa_readb */"
  32                              : "=r" (ret)
  33                              : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  34
  35         return ret;
  36 }
  37
  38 static inline unsigned short _upa_readw(unsigned long addr)
  39 {
  40         unsigned short ret;
  41
  42         __asm__ __volatile__("lduha\t[%1] %2, %0\t/* upa_readw */"
  43                              : "=r" (ret)
  44                              : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  45
  46         return ret;
  47 }
  48
  49 static inline unsigned int _upa_readl(unsigned long addr)
  50 {
  51         unsigned int ret;
  52
  53         __asm__ __volatile__("lduwa\t[%1] %2, %0\t/* upa_readl */"
  54                              : "=r" (ret)
  55                              : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  56
  57         return ret;
  58 }
  59
  60 static inline unsigned long _upa_readq(unsigned long addr)
  61 {
  62         unsigned long ret;
  63
  64         __asm__ __volatile__("ldxa\t[%1] %2, %0\t/* upa_readq */"
  65                              : "=r" (ret)
  66                              : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  67
  68         return ret;
  69 }
  70
  71 static inline void _upa_writeb(unsigned char b, unsigned long addr)
  72 {
  73         __asm__ __volatile__("stba\t%0, [%1] %2\t/* upa_writeb */"
  74                              : /* no outputs */
  75                              : "r" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  76 }
  77
  78 static inline void _upa_writew(unsigned short w, unsigned long addr)
  79 {
  80         __asm__ __volatile__("stha\t%0, [%1] %2\t/* upa_writew */"
  81                              : /* no outputs */
  82                              : "r" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  83 }
  84
  85 static inline void _upa_writel(unsigned int l, unsigned long addr)
  86 {
  87         __asm__ __volatile__("stwa\t%0, [%1] %2\t/* upa_writel */"
  88                              : /* no outputs */
  89                              : "r" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  90 }
  91
  92 static inline void _upa_writeq(unsigned long q, unsigned long addr)
  93 {
  94         __asm__ __volatile__("stxa\t%0, [%1] %2\t/* upa_writeq */"
  95                              : /* no outputs */
  96                              : "r" (q), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  97 }
  98
  99 #define upa_readb(__addr)               (_upa_readb((unsigned long)(__addr)))
 100 #define upa_readw(__addr)               (_upa_readw((unsigned long)(__addr)))
 101 #define upa_readl(__addr)               (_upa_readl((unsigned long)(__addr)))
 102 #define upa_readq(__addr)               (_upa_readq((unsigned long)(__addr)))
 103 #define upa_writeb(__b, __addr)         (_upa_writeb((__b), (unsigned long)(__addr)))
 104 #define upa_writew(__w, __addr)         (_upa_writew((__w), (unsigned long)(__addr)))
 105 #define upa_writel(__l, __addr)         (_upa_writel((__l), (unsigned long)(__addr)))
 106 #define upa_writeq(__q, __addr)         (_upa_writeq((__q), (unsigned long)(__addr)))
 107 #endif /* __KERNEL__ && !__ASSEMBLY__ */
 108
 109 #endif /* !(_SPARC64_UPA_H) */