spd.c revision 1.5
1 /* $NetBSD: spd.c,v 1.5 2003/07/15 02:54:36 lukem 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: spd.c,v 1.5 2003/07/15 02:54:36 lukem Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 45 #include <machine/bootinfo.h> 46 47 #include <playstation2/ee/eevar.h> 48 #include <playstation2/dev/sbusvar.h> 49 #include <playstation2/dev/spdvar.h> 50 #include <playstation2/dev/spdreg.h> 51 52 #ifdef DEBUG 53 #define STATIC 54 #else 55 #define STATIC static 56 #endif 57 58 STATIC int spd_match(struct device *, struct cfdata *, void *); 59 STATIC void spd_attach(struct device *, struct device *, void *); 60 STATIC int spd_print(void *, const char *); 61 STATIC int spd_intr(void *); 62 STATIC void __spd_eeprom_out(u_int8_t *, int); 63 STATIC int __spd_eeprom_in(u_int8_t *); 64 65 /* SPD device can't attach twice. because PS2 PC-Card slot is only one. */ 66 STATIC struct { 67 int (*func)(void *); 68 void *arg; 69 const char *name; 70 } __spd_table[2]; 71 72 CFATTACH_DECL(spd, sizeof(struct device), 73 spd_match, spd_attach, NULL, NULL); 74 75 #ifdef DEBUG 76 #define LEGAL_SLOT(slot) ((slot) >= 0 && (slot) < 2) 77 #endif 78 79 int 80 spd_match(struct device *parent, struct cfdata *cf, void *aux) 81 { 82 83 return ((BOOTINFO_REF(BOOTINFO_DEVCONF) == 84 BOOTINFO_DEVCONF_SPD_PRESENT)); 85 } 86 87 void 88 spd_attach(struct device *parent, struct device *self, void *aux) 89 { 90 struct spd_attach_args spa; 91 92 printf(": PlayStation 2 HDD Unit\n"); 93 94 switch (BOOTINFO_REF(BOOTINFO_PCMCIA_TYPE)) { 95 default: 96 __spd_table[0].name = "<unknown product>"; 97 break; 98 case 0: 99 /* FALLTHROUGH */ 100 case 1: 101 /* FALLTHROUGH */ 102 case 2: 103 __spd_table[SPD_HDD].name = "SCPH-20400"; 104 __spd_table[SPD_NIC].name = "SCPH-10190"; 105 break; 106 case 3: 107 __spd_table[SPD_HDD].name = "SCPH-10260"; 108 __spd_table[SPD_NIC].name = "SCPH-10260"; 109 break; 110 } 111 112 /* disable all */ 113 _reg_write_2(SPD_INTR_ENABLE_REG16, 0); 114 _reg_write_2(SPD_INTR_CLEAR_REG16, _reg_read_2(SPD_INTR_STATUS_REG16)); 115 116 spa.spa_slot = SPD_HDD; 117 spa.spa_product_name = __spd_table[SPD_HDD].name; 118 config_found(self, &spa, spd_print); 119 120 spa.spa_slot = SPD_NIC; 121 spa.spa_product_name = __spd_table[SPD_NIC].name; 122 config_found(self, &spa, spd_print); 123 124 sbus_intr_establish(SBUS_IRQ_PCMCIA, spd_intr, 0); 125 } 126 127 int 128 spd_print(void *aux, const char *pnp) 129 { 130 struct spd_attach_args *spa = aux; 131 132 if (pnp) 133 aprint_normal("%s at %s", __spd_table[spa->spa_slot].name, pnp); 134 135 return (UNCONF); 136 } 137 138 int 139 spd_intr(void *arg) 140 { 141 u_int16_t r; 142 143 r = _reg_read_2(SPD_INTR_STATUS_REG16); 144 145 /* HDD (SCPH-20400) */ 146 if ((r & SPD_INTR_HDD) != 0) 147 if (__spd_table[SPD_HDD].func != NULL) 148 (*__spd_table[SPD_HDD].func)(__spd_table[SPD_HDD].arg); 149 150 /* Network (SCPH-10190) */ 151 if ((r & (SPD_INTR_EMAC3 | SPD_INTR_RXEND | SPD_INTR_TXEND | 152 SPD_INTR_RXDNV | SPD_INTR_TXDNV)) != 0) 153 if (__spd_table[SPD_NIC].func) 154 (*__spd_table[SPD_NIC].func)(__spd_table[SPD_NIC].arg); 155 156 /* reinstall */ 157 r = _reg_read_2(SPD_INTR_ENABLE_REG16); 158 _reg_write_2(SPD_INTR_ENABLE_REG16, 0); 159 _reg_write_2(SPD_INTR_ENABLE_REG16, r); 160 161 return (1); 162 } 163 164 void * 165 spd_intr_establish(enum spd_slot slot, int (*func)(void *), void *arg) 166 { 167 168 KDASSERT(LEGAL_SLOT(slot)); 169 KDASSERT(__spd_table[slot].func == 0); 170 171 __spd_table[slot].func = func; 172 __spd_table[slot].arg = arg; 173 174 return ((void *)slot); 175 } 176 177 void 178 spd_intr_disestablish(void *handle) 179 { 180 int slot = (int)handle; 181 182 KDASSERT(LEGAL_SLOT(slot)); 183 184 __spd_table[slot].func = 0; 185 } 186 187 /* 188 * EEPROM access 189 */ 190 void 191 spd_eeprom_read(int addr, u_int16_t *data, int n) 192 { 193 int i, j, s; 194 u_int8_t r; 195 196 s = _intr_suspend(); 197 198 /* set direction */ 199 _reg_write_1(SPD_IO_DIR_REG8, SPD_IO_CLK | SPD_IO_CS | SPD_IO_IN); 200 201 /* chip select high */ 202 r = 0; 203 _reg_write_1(SPD_IO_DATA_REG8, r); 204 delay(1); 205 r |= SPD_IO_CS; 206 r &= ~(SPD_IO_IN | SPD_IO_CLK); 207 _reg_write_1(SPD_IO_DATA_REG8, r); 208 delay(1); 209 210 /* put start bit */ 211 __spd_eeprom_out(&r, 1); 212 213 /* put op code (read) */ 214 __spd_eeprom_out(&r, 1); 215 __spd_eeprom_out(&r, 0); 216 217 /* set address */ 218 for (i = 0; i < 6; i++, addr <<= 1) 219 __spd_eeprom_out(&r, addr & 0x20); 220 221 /* get data */ 222 for (i = 0; i < n; i++, data++) 223 for (*data = 0, j = 15; j >= 0; j--) 224 *data |= (__spd_eeprom_in(&r) << j); 225 226 /* chip select low */ 227 r &= ~(SPD_IO_CS | SPD_IO_IN | SPD_IO_CLK); 228 _reg_write_1(SPD_IO_DATA_REG8, r); 229 delay(2); 230 231 _intr_resume(s); 232 } 233 234 void 235 __spd_eeprom_out(u_int8_t *rp, int onoff) 236 { 237 u_int8_t r = *rp; 238 239 if (onoff) 240 r |= SPD_IO_IN; 241 else 242 r &= ~SPD_IO_IN; 243 244 r &= ~SPD_IO_CLK; 245 _reg_write_1(SPD_IO_DATA_REG8, r); 246 delay(1); 247 248 r |= SPD_IO_CLK; 249 _reg_write_1(SPD_IO_DATA_REG8, r); 250 delay(1); 251 252 r &= ~SPD_IO_CLK; 253 _reg_write_1(SPD_IO_DATA_REG8, r); 254 delay(1); 255 256 *rp = r; 257 } 258 259 int 260 __spd_eeprom_in(u_int8_t *rp) 261 { 262 int ret; 263 u_int8_t r = *rp; 264 265 r &= ~(SPD_IO_IN | SPD_IO_CLK); 266 _reg_write_1(SPD_IO_DATA_REG8, r); 267 delay(1); 268 269 r |= SPD_IO_CLK; 270 _reg_write_1(SPD_IO_DATA_REG8, r); 271 delay(1); 272 ret = (_reg_read_1(SPD_IO_DATA_REG8) >> 4) & 0x1; 273 274 r &= ~SPD_IO_CLK; 275 _reg_write_1(SPD_IO_DATA_REG8, r); 276 delay(1); 277 278 *rp = r; 279 280 return (ret); 281 } 282 283
Indexes created Tue Oct 14 21:09:58 GMT 2025