1/* 2 * linux/arch/sh/boards/renesas/hs7751rvoip/io.c 3 * 4 * Copyright (C) 2001 Ian da Silva, Jeremy Siegel 5 * Based largely on io_se.c. 6 * 7 * I/O routine for Renesas Technology sales HS7751RVoIP 8 * 9 * Initial version only to support LAN access; some 10 * placeholder code from io_hs7751rvoip.c left in with the 11 * expectation of later SuperIO and PCMCIA access. 12 */ 13#include <linux/kernel.h> 14#include <linux/types.h> 15#include <linux/module.h> 16#include <linux/pci.h> 17#include <asm/io.h> 18#include <asm/hs7751rvoip.h> 19#include <asm/addrspace.h> 20 21extern void *area6_io8_base; /* Area 6 8bit I/O Base address */ 22extern void *area5_io16_base; /* Area 5 16bit I/O Base address */ 23 24/* 25 * The 7751R HS7751RVoIP uses the built-in PCI controller (PCIC) 26 * of the 7751R processor, and has a SuperIO accessible via the PCI. 27 * The board also includes a PCMCIA controller on its memory bus, 28 * like the other Solution Engine boards. 29 */ 30 31#define CODEC_IO_BASE 0x1000 32#define CODEC_IOMAP(a) ((unsigned long)area6_io8_base + ((a) - CODEC_IO_BASE)) 33 34static inline unsigned long port2adr(unsigned int port) 35{ 36 if ((0x1f0 <= port && port < 0x1f8) || port == 0x3f6) 37 if (port == 0x3f6) 38 return ((unsigned long)area5_io16_base + 0x0c); 39 else 40 return ((unsigned long)area5_io16_base + 0x800 + 41 ((port-0x1f0) << 1)); 42 else 43 maybebadio((unsigned long)port); 44 return port; 45} 46 47/* The 7751R HS7751RVoIP seems to have everything hooked */ 48/* up pretty normally (nothing on high-bytes only...) so this */ 49/* shouldn't be needed */ 50static inline int shifted_port(unsigned long port) 51{ 52 /* For IDE registers, value is not shifted */ 53 if ((0x1f0 <= port && port < 0x1f8) || port == 0x3f6) 54 return 0; 55 else 56 return 1; 57} 58 59#if defined(CONFIG_HS7751RVOIP_CODEC) 60#define codec_port(port) \ 61 ((CODEC_IO_BASE <= (port)) && ((port) < (CODEC_IO_BASE + 0x20))) 62#else 63#define codec_port(port) (0) 64#endif 65 66/* 67 * General outline: remap really low stuff [eventually] to SuperIO, 68 * stuff in PCI IO space (at or above window at pci.h:PCIBIOS_MIN_IO) 69 * is mapped through the PCI IO window. Stuff with high bits (PXSEG) 70 * should be way beyond the window, and is used w/o translation for 71 * compatibility. 72 */ 73unsigned char hs7751rvoip_inb(unsigned long port) 74{ 75 if (PXSEG(port)) 76 return ctrl_inb(port); 77 else if (codec_port(port)) 78 return ctrl_inb(CODEC_IOMAP(port)); 79 else if (is_pci_ioaddr(port) || shifted_port(port)) 80 return ctrl_inb(pci_ioaddr(port)); 81 else 82 return ctrl_inw(port2adr(port)) & 0xff; 83} 84 85unsigned char hs7751rvoip_inb_p(unsigned long port) 86{ 87 unsigned char v; 88 89 if (PXSEG(port)) 90 v = ctrl_inb(port); 91 else if (codec_port(port)) 92 v = ctrl_inb(CODEC_IOMAP(port)); 93 else if (is_pci_ioaddr(port) || shifted_port(port)) 94 v = ctrl_inb(pci_ioaddr(port)); 95 else 96 v = ctrl_inw(port2adr(port)) & 0xff; 97 ctrl_delay(); 98 return v; 99} 100 101unsigned short hs7751rvoip_inw(unsigned long port) 102{ 103 if (PXSEG(port)) 104 return ctrl_inw(port); 105 else if (is_pci_ioaddr(port) || shifted_port(port)) 106 return ctrl_inw(pci_ioaddr(port)); 107 else 108 maybebadio(port); 109 return 0; 110} 111 112unsigned int hs7751rvoip_inl(unsigned long port) 113{ 114 if (PXSEG(port)) 115 return ctrl_inl(port); 116 else if (is_pci_ioaddr(port) || shifted_port(port)) 117 return ctrl_inl(pci_ioaddr(port)); 118 else 119 maybebadio(port); 120 return 0; 121} 122 123void hs7751rvoip_outb(unsigned char value, unsigned long port) 124{ 125 126 if (PXSEG(port)) 127 ctrl_outb(value, port); 128 else if (codec_port(port)) 129 ctrl_outb(value, CODEC_IOMAP(port)); 130 else if (is_pci_ioaddr(port) || shifted_port(port)) 131 ctrl_outb(value, pci_ioaddr(port)); 132 else 133 ctrl_outb(value, port2adr(port)); 134} 135 136void hs7751rvoip_outb_p(unsigned char value, unsigned long port) 137{ 138 if (PXSEG(port)) 139 ctrl_outb(value, port); 140 else if (codec_port(port)) 141 ctrl_outb(value, CODEC_IOMAP(port)); 142 else if (is_pci_ioaddr(port) || shifted_port(port)) 143 ctrl_outb(value, pci_ioaddr(port)); 144 else 145 ctrl_outw(value, port2adr(port)); 146 147 ctrl_delay(); 148} 149 150void hs7751rvoip_outw(unsigned short value, unsigned long port) 151{ 152 if (PXSEG(port)) 153 ctrl_outw(value, port); 154 else if (is_pci_ioaddr(port) || shifted_port(port)) 155 ctrl_outw(value, pci_ioaddr(port)); 156 else 157 maybebadio(port); 158} 159 160void hs7751rvoip_outl(unsigned int value, unsigned long port) 161{ 162 if (PXSEG(port)) 163 ctrl_outl(value, port); 164 else if (is_pci_ioaddr(port) || shifted_port(port)) 165 ctrl_outl(value, pci_ioaddr(port)); 166 else 167 maybebadio(port); 168} 169 170void hs7751rvoip_insb(unsigned long port, void *addr, unsigned long count) 171{ 172 u8 *buf = addr; 173 174 if (PXSEG(port)) 175 while (count--) 176 *buf++ = ctrl_inb(port); 177 else if (codec_port(port)) 178 while (count--) 179 *buf++ = ctrl_inb(CODEC_IOMAP(port)); 180 else if (is_pci_ioaddr(port) || shifted_port(port)) { 181 volatile u8 *bp = (volatile u8 *)pci_ioaddr(port); 182 183 while (count--) 184 *buf++ = *bp; 185 } else { 186 volatile u16 *p = (volatile u16 *)port2adr(port); 187 188 while (count--) 189 *buf++ = *p & 0xff; 190 } 191} 192 193void hs7751rvoip_insw(unsigned long port, void *addr, unsigned long count) 194{ 195 volatile u16 *p; 196 u16 *buf = addr; 197 198 if (PXSEG(port)) 199 p = (volatile u16 *)port; 200 else if (is_pci_ioaddr(port) || shifted_port(port)) 201 p = (volatile u16 *)pci_ioaddr(port); 202 else 203 p = (volatile u16 *)port2adr(port); 204 while (count--) 205 *buf++ = *p; 206} 207 208void hs7751rvoip_insl(unsigned long port, void *addr, unsigned long count) 209{ 210 211 if (is_pci_ioaddr(port) || shifted_port(port)) { 212 volatile u32 *p = (volatile u32 *)pci_ioaddr(port); 213 u32 *buf = addr; 214 215 while (count--) 216 *buf++ = *p; 217 } else 218 maybebadio(port); 219} 220 221void hs7751rvoip_outsb(unsigned long port, const void *addr, unsigned long count) 222{ 223 const u8 *buf = addr; 224 225 if (PXSEG(port)) 226 while (count--) 227 ctrl_outb(*buf++, port); 228 else if (codec_port(port)) 229 while (count--) 230 ctrl_outb(*buf++, CODEC_IOMAP(port)); 231 else if (is_pci_ioaddr(port) || shifted_port(port)) { 232 volatile u8 *bp = (volatile u8 *)pci_ioaddr(port); 233 234 while (count--) 235 *bp = *buf++; 236 } else { 237 volatile u16 *p = (volatile u16 *)port2adr(port); 238 239 while (count--) 240 *p = *buf++; 241 } 242} 243 244void hs7751rvoip_outsw(unsigned long port, const void *addr, unsigned long count) 245{ 246 volatile u16 *p; 247 const u16 *buf = addr; 248 249 if (PXSEG(port)) 250 p = (volatile u16 *)port; 251 else if (is_pci_ioaddr(port) || shifted_port(port)) 252 p = (volatile u16 *)pci_ioaddr(port); 253 else 254 p = (volatile u16 *)port2adr(port); 255 256 while (count--) 257 *p = *buf++; 258} 259 260void hs7751rvoip_outsl(unsigned long port, const void *addr, unsigned long count) 261{ 262 const u32 *buf = addr; 263 264 if (is_pci_ioaddr(port) || shifted_port(port)) { 265 volatile u32 *p = (volatile u32 *)pci_ioaddr(port); 266 267 while (count--) 268 *p = *buf++; 269 } else 270 maybebadio(port); 271} 272 273void __iomem *hs7751rvoip_ioport_map(unsigned long port, unsigned int size) 274{ 275 if (PXSEG(port)) 276 return (void __iomem *)port; 277 else if (unlikely(codec_port(port) && (size == 1))) 278 return (void __iomem *)CODEC_IOMAP(port); 279 else if (is_pci_ioaddr(port)) 280 return (void __iomem *)pci_ioaddr(port); 281 282 return (void __iomem *)port2adr(port); 283} 284