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TOMOYO Linux Cross Reference
Linux/arch/sparc/include/asm/upa.h

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  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) */
111 

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