LXR linux/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__)
  28static 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
  39static 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
  50static 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
  61static 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
  72static 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
  79static 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
  86static 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
  93static 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) */
 111