Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/m32r/kernel/io_usrv.c |
| 3 | * |
| 4 | * Typical I/O routines for uServer board. |
| 5 | * |
Hirokazu Takata | 2368086 | 2005-06-21 17:16:10 -0700 | [diff] [blame] | 6 | * Copyright (c) 2001-2005 Hiroyuki Kondo, Hirokazu Takata, |
| 7 | * Hitoshi Yamamoto, Takeo Takahashi |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | * |
| 9 | * This file is subject to the terms and conditions of the GNU General |
| 10 | * Public License. See the file "COPYING" in the main directory of this |
| 11 | * archive for more details. |
| 12 | * |
| 13 | */ |
| 14 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | #include <asm/m32r.h> |
| 16 | #include <asm/page.h> |
| 17 | #include <asm/io.h> |
| 18 | |
| 19 | #include <linux/types.h> |
| 20 | #include "../drivers/m32r_cfc.h" |
| 21 | |
| 22 | extern void pcc_ioread_byte(int, unsigned long, void *, size_t, size_t, int); |
| 23 | extern void pcc_ioread_word(int, unsigned long, void *, size_t, size_t, int); |
| 24 | extern void pcc_iowrite_byte(int, unsigned long, void *, size_t, size_t, int); |
| 25 | extern void pcc_iowrite_word(int, unsigned long, void *, size_t, size_t, int); |
| 26 | #define CFC_IOSTART CFC_IOPORT_BASE |
| 27 | #define CFC_IOEND (CFC_IOSTART + (M32R_PCC_MAPSIZE * M32R_MAX_PCC) - 1) |
| 28 | |
| 29 | #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE) |
| 30 | #define UART0_REGSTART 0x04c20000 |
| 31 | #define UART1_REGSTART 0x04c20100 |
| 32 | #define UART_IOMAP_SIZE 8 |
| 33 | #define UART0_IOSTART 0x3f8 |
| 34 | #define UART0_IOEND (UART0_IOSTART + UART_IOMAP_SIZE - 1) |
| 35 | #define UART1_IOSTART 0x2f8 |
| 36 | #define UART1_IOEND (UART1_IOSTART + UART_IOMAP_SIZE - 1) |
| 37 | #endif /* CONFIG_SERIAL_8250 || CONFIG_SERIAL_8250_MODULE */ |
| 38 | |
| 39 | #define PORT2ADDR(port) _port2addr(port) |
| 40 | |
Hirokazu Takata | 2368086 | 2005-06-21 17:16:10 -0700 | [diff] [blame] | 41 | static inline void *_port2addr(unsigned long port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | { |
| 43 | #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE) |
| 44 | if (port >= UART0_IOSTART && port <= UART0_IOEND) |
| 45 | port = ((port - UART0_IOSTART) << 1) + UART0_REGSTART; |
| 46 | else if (port >= UART1_IOSTART && port <= UART1_IOEND) |
| 47 | port = ((port - UART1_IOSTART) << 1) + UART1_REGSTART; |
| 48 | #endif /* CONFIG_SERIAL_8250 || CONFIG_SERIAL_8250_MODULE */ |
Hirokazu Takata | 1343f77 | 2005-10-30 15:00:04 -0800 | [diff] [blame] | 49 | return (void *)(port | (NONCACHE_OFFSET)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | } |
| 51 | |
Hirokazu Takata | 2368086 | 2005-06-21 17:16:10 -0700 | [diff] [blame] | 52 | static inline void delay(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | { |
| 54 | __asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory"); |
| 55 | } |
| 56 | |
| 57 | unsigned char _inb(unsigned long port) |
| 58 | { |
| 59 | if (port >= CFC_IOSTART && port <= CFC_IOEND) { |
| 60 | unsigned char b; |
| 61 | pcc_ioread_byte(0, port, &b, sizeof(b), 1, 0); |
| 62 | return b; |
| 63 | } else |
| 64 | return *(volatile unsigned char *)PORT2ADDR(port); |
| 65 | } |
| 66 | |
| 67 | unsigned short _inw(unsigned long port) |
| 68 | { |
| 69 | if (port >= CFC_IOSTART && port <= CFC_IOEND) { |
| 70 | unsigned short w; |
| 71 | pcc_ioread_word(0, port, &w, sizeof(w), 1, 0); |
| 72 | return w; |
| 73 | } else |
| 74 | return *(volatile unsigned short *)PORT2ADDR(port); |
| 75 | } |
| 76 | |
| 77 | unsigned long _inl(unsigned long port) |
| 78 | { |
| 79 | if (port >= CFC_IOSTART && port <= CFC_IOEND) { |
| 80 | unsigned long l; |
| 81 | pcc_ioread_word(0, port, &l, sizeof(l), 1, 0); |
| 82 | return l; |
| 83 | } else |
| 84 | return *(volatile unsigned long *)PORT2ADDR(port); |
| 85 | } |
| 86 | |
| 87 | unsigned char _inb_p(unsigned long port) |
| 88 | { |
Hirokazu Takata | 2368086 | 2005-06-21 17:16:10 -0700 | [diff] [blame] | 89 | unsigned char v = _inb(port); |
| 90 | delay(); |
| 91 | return v; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | } |
| 93 | |
| 94 | unsigned short _inw_p(unsigned long port) |
| 95 | { |
Hirokazu Takata | 2368086 | 2005-06-21 17:16:10 -0700 | [diff] [blame] | 96 | unsigned short v = _inw(port); |
| 97 | delay(); |
| 98 | return v; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | unsigned long _inl_p(unsigned long port) |
| 102 | { |
Hirokazu Takata | 2368086 | 2005-06-21 17:16:10 -0700 | [diff] [blame] | 103 | unsigned long v = _inl(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | delay(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | return v; |
| 106 | } |
| 107 | |
| 108 | void _outb(unsigned char b, unsigned long port) |
| 109 | { |
| 110 | if (port >= CFC_IOSTART && port <= CFC_IOEND) |
| 111 | pcc_iowrite_byte(0, port, &b, sizeof(b), 1, 0); |
| 112 | else |
| 113 | *(volatile unsigned char *)PORT2ADDR(port) = b; |
| 114 | } |
| 115 | |
| 116 | void _outw(unsigned short w, unsigned long port) |
| 117 | { |
| 118 | if (port >= CFC_IOSTART && port <= CFC_IOEND) |
| 119 | pcc_iowrite_word(0, port, &w, sizeof(w), 1, 0); |
| 120 | else |
| 121 | *(volatile unsigned short *)PORT2ADDR(port) = w; |
| 122 | } |
| 123 | |
| 124 | void _outl(unsigned long l, unsigned long port) |
| 125 | { |
| 126 | if (port >= CFC_IOSTART && port <= CFC_IOEND) |
| 127 | pcc_iowrite_word(0, port, &l, sizeof(l), 1, 0); |
| 128 | else |
| 129 | *(volatile unsigned long *)PORT2ADDR(port) = l; |
| 130 | } |
| 131 | |
| 132 | void _outb_p(unsigned char b, unsigned long port) |
| 133 | { |
Hirokazu Takata | 2368086 | 2005-06-21 17:16:10 -0700 | [diff] [blame] | 134 | _outb(b, port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | delay(); |
| 136 | } |
| 137 | |
| 138 | void _outw_p(unsigned short w, unsigned long port) |
| 139 | { |
Hirokazu Takata | 2368086 | 2005-06-21 17:16:10 -0700 | [diff] [blame] | 140 | _outw(w, port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | delay(); |
| 142 | } |
| 143 | |
| 144 | void _outl_p(unsigned long l, unsigned long port) |
| 145 | { |
Hirokazu Takata | 2368086 | 2005-06-21 17:16:10 -0700 | [diff] [blame] | 146 | _outl(l, port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | delay(); |
| 148 | } |
| 149 | |
| 150 | void _insb(unsigned int port, void * addr, unsigned long count) |
| 151 | { |
| 152 | if (port >= CFC_IOSTART && port <= CFC_IOEND) |
| 153 | pcc_ioread_byte(0, port, addr, sizeof(unsigned char), count, 1); |
| 154 | else { |
| 155 | unsigned char *buf = addr; |
| 156 | unsigned char *portp = PORT2ADDR(port); |
| 157 | while (count--) |
| 158 | *buf++ = *(volatile unsigned char *)portp; |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | void _insw(unsigned int port, void * addr, unsigned long count) |
| 163 | { |
| 164 | unsigned short *buf = addr; |
| 165 | unsigned short *portp; |
| 166 | |
| 167 | if (port >= CFC_IOSTART && port <= CFC_IOEND) |
| 168 | pcc_ioread_word(0, port, addr, sizeof(unsigned short), count, |
| 169 | 1); |
| 170 | else { |
| 171 | portp = PORT2ADDR(port); |
| 172 | while (count--) |
| 173 | *buf++ = *(volatile unsigned short *)portp; |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | void _insl(unsigned int port, void * addr, unsigned long count) |
| 178 | { |
| 179 | unsigned long *buf = addr; |
| 180 | unsigned long *portp; |
| 181 | |
| 182 | portp = PORT2ADDR(port); |
| 183 | while (count--) |
| 184 | *buf++ = *(volatile unsigned long *)portp; |
| 185 | } |
| 186 | |
| 187 | void _outsb(unsigned int port, const void * addr, unsigned long count) |
| 188 | { |
| 189 | const unsigned char *buf = addr; |
| 190 | unsigned char *portp; |
| 191 | |
| 192 | if (port >= CFC_IOSTART && port <= CFC_IOEND) |
| 193 | pcc_iowrite_byte(0, port, (void *)addr, sizeof(unsigned char), |
| 194 | count, 1); |
| 195 | else { |
| 196 | portp = PORT2ADDR(port); |
| 197 | while (count--) |
| 198 | *(volatile unsigned char *)portp = *buf++; |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | void _outsw(unsigned int port, const void * addr, unsigned long count) |
| 203 | { |
| 204 | const unsigned short *buf = addr; |
| 205 | unsigned short *portp; |
| 206 | |
| 207 | if (port >= CFC_IOSTART && port <= CFC_IOEND) |
| 208 | pcc_iowrite_word(0, port, (void *)addr, sizeof(unsigned short), |
| 209 | count, 1); |
| 210 | else { |
| 211 | portp = PORT2ADDR(port); |
| 212 | while (count--) |
| 213 | *(volatile unsigned short *)portp = *buf++; |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | void _outsl(unsigned int port, const void * addr, unsigned long count) |
| 218 | { |
| 219 | const unsigned long *buf = addr; |
| 220 | unsigned char *portp; |
| 221 | |
| 222 | portp = PORT2ADDR(port); |
| 223 | while (count--) |
| 224 | *(volatile unsigned long *)portp = *buf++; |
| 225 | } |