spd.c revision 1.9
1 /* $NetBSD: spd.c,v 1.9 2014/03/31 11:25:49 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by UCHIYAMA Yasushi. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: spd.c,v 1.9 2014/03/31 11:25:49 martin Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 38 #include <machine/bootinfo.h> 39 40 #include <playstation2/ee/eevar.h> 41 #include <playstation2/dev/sbusvar.h> 42 #include <playstation2/dev/spdvar.h> 43 #include <playstation2/dev/spdreg.h> 44 45 #ifdef DEBUG 46 #define STATIC 47 #else 48 #define STATIC static 49 #endif 50 51 STATIC int spd_match(struct device *, struct cfdata *, void *); 52 STATIC void spd_attach(struct device *, struct device *, void *); 53 STATIC int spd_print(void *, const char *); 54 STATIC int spd_intr(void *); 55 STATIC void __spd_eeprom_out(u_int8_t *, int); 56 STATIC int __spd_eeprom_in(u_int8_t *); 57 58 /* SPD device can't attach twice. because PS2 PC-Card slot is only one. */ 59 STATIC struct { 60 int (*func)(void *); 61 void *arg; 62 const char *name; 63 } __spd_table[2]; 64 65 CFATTACH_DECL(spd, sizeof(struct device), 66 spd_match, spd_attach, NULL, NULL); 67 68 #ifdef DEBUG 69 #define LEGAL_SLOT(slot) ((slot) >= 0 && (slot) < 2) 70 #endif 71 72 int 73 spd_match(struct device *parent, struct cfdata *cf, void *aux) 74 { 75 76 return ((BOOTINFO_REF(BOOTINFO_DEVCONF) == 77 BOOTINFO_DEVCONF_SPD_PRESENT)); 78 } 79 80 void 81 spd_attach(struct device *parent, struct device *self, void *aux) 82 { 83 struct spd_attach_args spa; 84 85 printf(": PlayStation 2 HDD Unit\n"); 86 87 switch (BOOTINFO_REF(BOOTINFO_PCMCIA_TYPE)) { 88 default: 89 __spd_table[0].name = "<unknown product>"; 90 break; 91 case 0: 92 /* FALLTHROUGH */ 93 case 1: 94 /* FALLTHROUGH */ 95 case 2: 96 __spd_table[SPD_HDD].name = "SCPH-20400"; 97 __spd_table[SPD_NIC].name = "SCPH-10190"; 98 break; 99 case 3: 100 __spd_table[SPD_HDD].name = "SCPH-10260"; 101 __spd_table[SPD_NIC].name = "SCPH-10260"; 102 break; 103 } 104 105 /* disable all */ 106 _reg_write_2(SPD_INTR_ENABLE_REG16, 0); 107 _reg_write_2(SPD_INTR_CLEAR_REG16, _reg_read_2(SPD_INTR_STATUS_REG16)); 108 109 spa.spa_slot = SPD_HDD; 110 spa.spa_product_name = __spd_table[SPD_HDD].name; 111 config_found(self, &spa, spd_print); 112 113 spa.spa_slot = SPD_NIC; 114 spa.spa_product_name = __spd_table[SPD_NIC].name; 115 config_found(self, &spa, spd_print); 116 117 sbus_intr_establish(SBUS_IRQ_PCMCIA, spd_intr, 0); 118 } 119 120 int 121 spd_print(void *aux, const char *pnp) 122 { 123 struct spd_attach_args *spa = aux; 124 125 if (pnp) 126 aprint_normal("%s at %s", __spd_table[spa->spa_slot].name, pnp); 127 128 return (UNCONF); 129 } 130 131 int 132 spd_intr(void *arg) 133 { 134 u_int16_t r; 135 136 r = _reg_read_2(SPD_INTR_STATUS_REG16); 137 138 /* HDD (SCPH-20400) */ 139 if ((r & SPD_INTR_HDD) != 0) 140 if (__spd_table[SPD_HDD].func != NULL) 141 (*__spd_table[SPD_HDD].func)(__spd_table[SPD_HDD].arg); 142 143 /* Network (SCPH-10190) */ 144 if ((r & (SPD_INTR_EMAC3 | SPD_INTR_RXEND | SPD_INTR_TXEND | 145 SPD_INTR_RXDNV | SPD_INTR_TXDNV)) != 0) 146 if (__spd_table[SPD_NIC].func) 147 (*__spd_table[SPD_NIC].func)(__spd_table[SPD_NIC].arg); 148 149 /* reinstall */ 150 r = _reg_read_2(SPD_INTR_ENABLE_REG16); 151 _reg_write_2(SPD_INTR_ENABLE_REG16, 0); 152 _reg_write_2(SPD_INTR_ENABLE_REG16, r); 153 154 return (1); 155 } 156 157 void * 158 spd_intr_establish(enum spd_slot slot, int (*func)(void *), void *arg) 159 { 160 161 KDASSERT(LEGAL_SLOT(slot)); 162 KDASSERT(__spd_table[slot].func == 0); 163 164 __spd_table[slot].func = func; 165 __spd_table[slot].arg = arg; 166 167 return ((void *)slot); 168 } 169 170 void 171 spd_intr_disestablish(void *handle) 172 { 173 int slot = (int)handle; 174 175 KDASSERT(LEGAL_SLOT(slot)); 176 177 __spd_table[slot].func = 0; 178 } 179 180 /* 181 * EEPROM access 182 */ 183 void 184 spd_eeprom_read(int addr, u_int16_t *data, int n) 185 { 186 int i, j, s; 187 u_int8_t r; 188 189 s = _intr_suspend(); 190 191 /* set direction */ 192 _reg_write_1(SPD_IO_DIR_REG8, SPD_IO_CLK | SPD_IO_CS | SPD_IO_IN); 193 194 /* chip select high */ 195 r = 0; 196 _reg_write_1(SPD_IO_DATA_REG8, r); 197 delay(1); 198 r |= SPD_IO_CS; 199 r &= ~(SPD_IO_IN | SPD_IO_CLK); 200 _reg_write_1(SPD_IO_DATA_REG8, r); 201 delay(1); 202 203 /* put start bit */ 204 __spd_eeprom_out(&r, 1); 205 206 /* put op code (read) */ 207 __spd_eeprom_out(&r, 1); 208 __spd_eeprom_out(&r, 0); 209 210 /* set address */ 211 for (i = 0; i < 6; i++, addr <<= 1) 212 __spd_eeprom_out(&r, addr & 0x20); 213 214 /* get data */ 215 for (i = 0; i < n; i++, data++) 216 for (*data = 0, j = 15; j >= 0; j--) 217 *data |= (__spd_eeprom_in(&r) << j); 218 219 /* chip select low */ 220 r &= ~(SPD_IO_CS | SPD_IO_IN | SPD_IO_CLK); 221 _reg_write_1(SPD_IO_DATA_REG8, r); 222 delay(2); 223 224 _intr_resume(s); 225 } 226 227 void 228 __spd_eeprom_out(u_int8_t *rp, int onoff) 229 { 230 u_int8_t r = *rp; 231 232 if (onoff) 233 r |= SPD_IO_IN; 234 else 235 r &= ~SPD_IO_IN; 236 237 r &= ~SPD_IO_CLK; 238 _reg_write_1(SPD_IO_DATA_REG8, r); 239 delay(1); 240 241 r |= SPD_IO_CLK; 242 _reg_write_1(SPD_IO_DATA_REG8, r); 243 delay(1); 244 245 r &= ~SPD_IO_CLK; 246 _reg_write_1(SPD_IO_DATA_REG8, r); 247 delay(1); 248 249 *rp = r; 250 } 251 252 int 253 __spd_eeprom_in(u_int8_t *rp) 254 { 255 int ret; 256 u_int8_t r = *rp; 257 258 r &= ~(SPD_IO_IN | SPD_IO_CLK); 259 _reg_write_1(SPD_IO_DATA_REG8, r); 260 delay(1); 261 262 r |= SPD_IO_CLK; 263 _reg_write_1(SPD_IO_DATA_REG8, r); 264 delay(1); 265 ret = (_reg_read_1(SPD_IO_DATA_REG8) >> 4) & 0x1; 266 267 r &= ~SPD_IO_CLK; 268 _reg_write_1(SPD_IO_DATA_REG8, r); 269 delay(1); 270 271 *rp = r; 272 273 return (ret); 274 } 275 276
Indexes created Tue Oct 14 21:09:58 GMT 2025