arch/sparc/include/asm/upa.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _SPARC64_UPA_H
   3 #define _SPARC64_UPA_H
   4
   5 #include <asm/asi.h>
   6
   7 /* UPA level registers and defines. */
   8
   9 /* UPA Config Register */
  10 #define UPA_CONFIG_RESV         0xffffffffc0000000 /* Reserved.                    */
  11 #define UPA_CONFIG_PCON         0x000000003fc00000 /* Depth of various sys queues. */
  12 #define UPA_CONFIG_MID          0x00000000003e0000 /* Module ID.                   */
  13 #define UPA_CONFIG_PCAP         0x000000000001ffff /* Port Capabilities.           */
  14
  15 /* UPA Port ID Register */
  16 #define UPA_PORTID_FNP          0xff00000000000000 /* Hardcoded to 0xfc on ultra.  */
  17 #define UPA_PORTID_RESV         0x00fffff800000000 /* Reserved.                    */
  18 #define UPA_PORTID_ECCVALID     0x0000000400000000 /* Zero if mod can generate ECC */
  19 #define UPA_PORTID_ONEREAD      0x0000000200000000 /* Set if mod generates P_RASB  */
  20 #define UPA_PORTID_PINTRDQ      0x0000000180000000 /* # outstanding P_INT_REQ's    */
  21 #define UPA_PORTID_PREQDQ       0x000000007e000000 /* slave-wr's to mod supported  */
  22 #define UPA_PORTID_PREQRD       0x0000000001e00000 /* # incoming P_REQ's supported */
  23 #define UPA_PORTID_UPACAP       0x00000000001f0000 /* UPA capabilities of mod      */
  24 #define UPA_PORTID_ID           0x000000000000ffff /* Module Identification bits  */
  25
  26 /* UPA I/O space accessors */
  27 #if defined(__KERNEL__) && !defined(__ASSEMBLY__)
  28 static inline unsigned char _upa_readb(unsigned long addr)
  29 {
  30         unsigned char ret;
  31
  32         __asm__ __volatile__("lduba\t[%1] %2, %0\t/* upa_readb */"
  33                              : "=r" (ret)
  34                              : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  35
  36         return ret;
  37 }
  38
  39 static inline unsigned short _upa_readw(unsigned long addr)
  40 {
  41         unsigned short ret;
  42
  43         __asm__ __volatile__("lduha\t[%1] %2, %0\t/* upa_readw */"
  44                              : "=r" (ret)
  45                              : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  46
  47         return ret;
  48 }
  49
  50 static inline unsigned int _upa_readl(unsigned long addr)
  51 {
  52         unsigned int ret;
  53
  54         __asm__ __volatile__("lduwa\t[%1] %2, %0\t/* upa_readl */"
  55                              : "=r" (ret)
  56                              : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  57
  58         return ret;
  59 }
  60
  61 static inline unsigned long _upa_readq(unsigned long addr)
  62 {
  63         unsigned long ret;
  64
  65         __asm__ __volatile__("ldxa\t[%1] %2, %0\t/* upa_readq */"
  66                              : "=r" (ret)
  67                              : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  68
  69         return ret;
  70 }
  71
  72 static inline void _upa_writeb(unsigned char b, unsigned long addr)
  73 {
  74         __asm__ __volatile__("stba\t%0, [%1] %2\t/* upa_writeb */"
  75                              : /* no outputs */
  76                              : "r" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  77 }
  78
  79 static inline void _upa_writew(unsigned short w, unsigned long addr)
  80 {
  81         __asm__ __volatile__("stha\t%0, [%1] %2\t/* upa_writew */"
  82                              : /* no outputs */
  83                              : "r" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  84 }
  85
  86 static inline void _upa_writel(unsigned int l, unsigned long addr)
  87 {
  88         __asm__ __volatile__("stwa\t%0, [%1] %2\t/* upa_writel */"
  89                              : /* no outputs */
  90                              : "r" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  91 }
  92
  93 static inline void _upa_writeq(unsigned long q, unsigned long addr)
  94 {
  95         __asm__ __volatile__("stxa\t%0, [%1] %2\t/* upa_writeq */"
  96                              : /* no outputs */
  97                              : "r" (q), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
  98 }
  99
 100 #define upa_readb(__addr)               (_upa_readb((unsigned long)(__addr)))
 101 #define upa_readw(__addr)               (_upa_readw((unsigned long)(__addr)))
 102 #define upa_readl(__addr)               (_upa_readl((unsigned long)(__addr)))
 103 #define upa_readq(__addr)               (_upa_readq((unsigned long)(__addr)))
 104 #define upa_writeb(__b, __addr)         (_upa_writeb((__b), (unsigned long)(__addr)))
 105 #define upa_writew(__w, __addr)         (_upa_writew((__w), (unsigned long)(__addr)))
 106 #define upa_writel(__l, __addr)         (_upa_writel((__l), (unsigned long)(__addr)))
 107 #define upa_writeq(__q, __addr)         (_upa_writeq((__q), (unsigned long)(__addr)))
 108 #endif /* __KERNEL__ && !__ASSEMBLY__ */
 109
 110 #endif /* !(_SPARC64_UPA_H) */