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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 | /* * $Id: io.c,v 1.4 2003/08/03 03:05:10 lethal Exp $ * by Greg Banks <gbanks@pocketpenguins.com> * (c) 2000 PocketPenguins Inc * * Derived from io_hd64461.c, which bore the message: * Copyright (C) 2000 YAEGASHI Takeshi * * Typical I/O routines for HD64465 system. */ #include <linux/config.h> #include <linux/kernel.h> #include <linux/module.h> #include <asm/io.h> #include <asm/hd64465/hd64465.h> #define HD64465_DEBUG 0 #if HD64465_DEBUG #define DPRINTK(args...) printk(args) #define DIPRINTK(n, args...) if (hd64465_io_debug>(n)) printk(args) #else #define DPRINTK(args...) #define DIPRINTK(n, args...) #endif /* This is a hack suitable only for debugging IO port problems */ int hd64465_io_debug; EXPORT_SYMBOL(hd64465_io_debug); /* Low iomap maps port 0-1K to addresses in 8byte chunks */ #define HD64465_IOMAP_LO_THRESH 0x400 #define HD64465_IOMAP_LO_SHIFT 3 #define HD64465_IOMAP_LO_MASK ((1<<HD64465_IOMAP_LO_SHIFT)-1) #define HD64465_IOMAP_LO_NMAP (HD64465_IOMAP_LO_THRESH>>HD64465_IOMAP_LO_SHIFT) static unsigned long hd64465_iomap_lo[HD64465_IOMAP_LO_NMAP]; static unsigned char hd64465_iomap_lo_shift[HD64465_IOMAP_LO_NMAP]; /* High iomap maps port 1K-64K to addresses in 1K chunks */ #define HD64465_IOMAP_HI_THRESH 0x10000 #define HD64465_IOMAP_HI_SHIFT 10 #define HD64465_IOMAP_HI_MASK ((1<<HD64465_IOMAP_HI_SHIFT)-1) #define HD64465_IOMAP_HI_NMAP (HD64465_IOMAP_HI_THRESH>>HD64465_IOMAP_HI_SHIFT) static unsigned long hd64465_iomap_hi[HD64465_IOMAP_HI_NMAP]; static unsigned char hd64465_iomap_hi_shift[HD64465_IOMAP_HI_NMAP]; #ifndef MAX #define MAX(a,b) ((a)>(b)?(a):(b)) #endif #define PORT2ADDR(x) (sh_mv.mv_isa_port2addr(x)) void hd64465_port_map(unsigned short baseport, unsigned int nports, unsigned long addr, unsigned char shift) { unsigned int port, endport = baseport + nports; DPRINTK("hd64465_port_map(base=0x%04hx, n=0x%04hx, addr=0x%08lx,endport=0x%04x)\n", baseport, nports, addr,endport); for (port = baseport ; port < endport && port < HD64465_IOMAP_LO_THRESH ; port += (1<<HD64465_IOMAP_LO_SHIFT)) { DPRINTK(" maplo[0x%x] = 0x%08lx\n", port, addr); hd64465_iomap_lo[port>>HD64465_IOMAP_LO_SHIFT] = addr; hd64465_iomap_lo_shift[port>>HD64465_IOMAP_LO_SHIFT] = shift; addr += (1<<(HD64465_IOMAP_LO_SHIFT)); } for (port = MAX(baseport, HD64465_IOMAP_LO_THRESH) ; port < endport && port < HD64465_IOMAP_HI_THRESH ; port += (1<<HD64465_IOMAP_HI_SHIFT)) { DPRINTK(" maphi[0x%x] = 0x%08lx\n", port, addr); hd64465_iomap_hi[port>>HD64465_IOMAP_HI_SHIFT] = addr; hd64465_iomap_hi_shift[port>>HD64465_IOMAP_HI_SHIFT] = shift; addr += (1<<(HD64465_IOMAP_HI_SHIFT)); } } EXPORT_SYMBOL(hd64465_port_map); void hd64465_port_unmap(unsigned short baseport, unsigned int nports) { unsigned int port, endport = baseport + nports; DPRINTK("hd64465_port_unmap(base=0x%04hx, n=0x%04hx)\n", baseport, nports); for (port = baseport ; port < endport && port < HD64465_IOMAP_LO_THRESH ; port += (1<<HD64465_IOMAP_LO_SHIFT)) { hd64465_iomap_lo[port>>HD64465_IOMAP_LO_SHIFT] = 0; } for (port = MAX(baseport, HD64465_IOMAP_LO_THRESH) ; port < endport && port < HD64465_IOMAP_HI_THRESH ; port += (1<<HD64465_IOMAP_HI_SHIFT)) { hd64465_iomap_hi[port>>HD64465_IOMAP_HI_SHIFT] = 0; } } EXPORT_SYMBOL(hd64465_port_unmap); unsigned long hd64465_isa_port2addr(unsigned long port) { unsigned long addr = 0; unsigned char shift; /* handle remapping of low IO ports */ if (port < HD64465_IOMAP_LO_THRESH) { addr = hd64465_iomap_lo[port >> HD64465_IOMAP_LO_SHIFT]; shift = hd64465_iomap_lo_shift[port >> HD64465_IOMAP_LO_SHIFT]; if (addr != 0) addr += (port & HD64465_IOMAP_LO_MASK) << shift; else printk(KERN_NOTICE "io_hd64465: access to un-mapped port %lx\n", port); } else if (port < HD64465_IOMAP_HI_THRESH) { addr = hd64465_iomap_hi[port >> HD64465_IOMAP_HI_SHIFT]; shift = hd64465_iomap_hi_shift[port >> HD64465_IOMAP_HI_SHIFT]; if (addr != 0) addr += (port & HD64465_IOMAP_HI_MASK) << shift; else printk(KERN_NOTICE "io_hd64465: access to un-mapped port %lx\n", port); } /* HD64465 internal devices (0xb0000000) */ else if (port < 0x20000) addr = CONFIG_HD64465_IOBASE + port - 0x10000; /* Whole physical address space (0xa0000000) */ else addr = P2SEGADDR(port); DIPRINTK(2, "PORT2ADDR(0x%08lx) = 0x%08lx\n", port, addr); return addr; } static inline void delay(void) { ctrl_inw(0xa0000000); } unsigned char hd64465_inb(unsigned long port) { unsigned long addr = PORT2ADDR(port); unsigned long b = (addr == 0 ? 0 : *(volatile unsigned char*)addr); DIPRINTK(0, "inb(%08lx) = %02x\n", addr, (unsigned)b); return b; } unsigned char hd64465_inb_p(unsigned long port) { unsigned long v; unsigned long addr = PORT2ADDR(port); v = (addr == 0 ? 0 : *(volatile unsigned char*)addr); delay(); DIPRINTK(0, "inb_p(%08lx) = %02x\n", addr, (unsigned)v); return v; } unsigned short hd64465_inw(unsigned long port) { unsigned long addr = PORT2ADDR(port); unsigned long b = (addr == 0 ? 0 : *(volatile unsigned short*)addr); DIPRINTK(0, "inw(%08lx) = %04lx\n", addr, b); return b; } unsigned int hd64465_inl(unsigned long port) { unsigned long addr = PORT2ADDR(port); unsigned int b = (addr == 0 ? 0 : *(volatile unsigned long*)addr); DIPRINTK(0, "inl(%08lx) = %08x\n", addr, b); return b; } void hd64465_outb(unsigned char b, unsigned long port) { unsigned long addr = PORT2ADDR(port); DIPRINTK(0, "outb(%02x, %08lx)\n", (unsigned)b, addr); if (addr != 0) *(volatile unsigned char*)addr = b; } void hd64465_outb_p(unsigned char b, unsigned long port) { unsigned long addr = PORT2ADDR(port); DIPRINTK(0, "outb_p(%02x, %08lx)\n", (unsigned)b, addr); if (addr != 0) *(volatile unsigned char*)addr = b; delay(); } void hd64465_outw(unsigned short b, unsigned long port) { unsigned long addr = PORT2ADDR(port); DIPRINTK(0, "outw(%04x, %08lx)\n", (unsigned)b, addr); if (addr != 0) *(volatile unsigned short*)addr = b; } void hd64465_outl(unsigned int b, unsigned long port) { unsigned long addr = PORT2ADDR(port); DIPRINTK(0, "outl(%08x, %08lx)\n", b, addr); if (addr != 0) *(volatile unsigned long*)addr = b; } |