1 /* $NetBSD: sbus.c,v 1.20 2022/02/11 17:30:48 riastradh 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 /* 33 * PlayStation 2 internal PCMCIA/USB interface unit. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: sbus.c,v 1.20 2022/02/11 17:30:48 riastradh Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/device.h> 41 #include <sys/systm.h> 42 43 #include <machine/bootinfo.h> 44 #include <machine/autoconf.h> 45 46 #include <playstation2/playstation2/interrupt.h> 47 48 #include <playstation2/ee/eevar.h> 49 #include <playstation2/ee/intcvar.h> 50 #include <playstation2/dev/sbusvar.h> 51 #include <playstation2/dev/sbusreg.h> 52 53 #ifdef DEBUG 54 #define STATIC 55 #else 56 #define STATIC static 57 #endif 58 59 STATIC void sbus_type2_pcmcia_intr_clear(void); 60 STATIC void sbus_type2_pcmcia_intr_enable(void); 61 STATIC void sbus_type2_pcmcia_intr_disable(void); 62 STATIC void sbus_type2_pcmcia_intr_reinstall(void); 63 STATIC void sbus_type3_pcmcia_intr_clear(void); 64 STATIC void sbus_type3_pcmcia_intr_enable(void); 65 STATIC void sbus_type3_pcmcia_intr_disable(void); 66 STATIC void sbus_type3_pcmcia_intr_reinstall(void); 67 STATIC int sbus_spurious_intr(void *); 68 69 STATIC void (*sbus_pcmcia_intr_clear)(void); 70 STATIC void (*sbus_pcmcia_intr_enable)(void); 71 STATIC void (*sbus_pcmcia_intr_disable)(void); 72 STATIC void (*sbus_pcmcia_intr_reinstall)(void); 73 74 STATIC int (*sbus_pcmcia_intr)(void *) = sbus_spurious_intr; 75 STATIC void *sbus_pcmcia_context; 76 STATIC int (*sbus_usb_intr)(void *) = sbus_spurious_intr; 77 STATIC void *sbus_usb_context; 78 79 STATIC void sbus_init(int); 80 STATIC int sbus_intr(void *); 81 82 STATIC int sbus_match(device_t, cfdata_t, void *); 83 STATIC void sbus_attach(device_t, device_t, void *); 84 STATIC int sbus_search(device_t, cfdata_t, 85 const int *, void *); 86 STATIC int sbus_print(void *, const char *); 87 88 CFATTACH_DECL_NEW(sbus, 0, 89 sbus_match, sbus_attach, NULL, NULL); 90 91 extern struct cfdriver sbus_cd; 92 STATIC int __sbus_attached; 93 94 int 95 sbus_match(device_t parent, cfdata_t cf, void *aux) 96 { 97 struct mainbus_attach_args *ma = aux; 98 99 if (strcmp(ma->ma_name, sbus_cd.cd_name) != 0) 100 return (0); 101 102 return (!__sbus_attached); 103 } 104 105 void 106 sbus_attach(device_t parent, device_t self, void *aux) 107 { 108 int type = BOOTINFO_REF(BOOTINFO_PCMCIA_TYPE); 109 110 printf(": controller type %d\n", type); 111 112 /* Initialize SBUS controller */ 113 sbus_init(type); 114 115 config_search(self, NULL, 116 CFARGS(.search = sbus_search)); 117 } 118 119 int 120 sbus_search(device_t parent, cfdata_t cf, 121 const int *ldesc, void *aux) 122 { 123 struct sbus_attach_args sa; 124 125 if (config_probe(parent, cf, &sa)) 126 config_attach(parent, cf, &sa, sbus_print, CFARGS_NONE); 127 128 return (0); 129 } 130 131 int 132 sbus_print(void *aux, const char *pnp) 133 { 134 135 return (pnp ? QUIET : UNCONF); 136 } 137 138 void 139 sbus_init(int type) 140 { 141 /* install model dependent hook */ 142 #define SET_PCMCIA_INTR_OPS(x) \ 143 sbus_pcmcia_intr_clear = sbus_type##x##_pcmcia_intr_clear; \ 144 sbus_pcmcia_intr_enable = sbus_type##x##_pcmcia_intr_enable; \ 145 sbus_pcmcia_intr_disable = sbus_type##x##_pcmcia_intr_disable; \ 146 sbus_pcmcia_intr_reinstall = sbus_type##x##_pcmcia_intr_reinstall 147 148 switch (type) { 149 default: 150 panic("unknown pcmcia controller type = %d", type); 151 break; 152 case 0: 153 /* FALLTHROUGH */ 154 case 1: 155 /* FALLTHROUGH */ 156 case 2: 157 SET_PCMCIA_INTR_OPS(2); 158 break; 159 case 3: 160 SET_PCMCIA_INTR_OPS(3); 161 break; 162 } 163 #undef SET_PCMCIA_INTR_OPS 164 /* disable interrupt */ 165 (*sbus_pcmcia_intr_disable)(); 166 167 /* clear interrupt */ 168 (*sbus_pcmcia_intr_clear)(); 169 _reg_write_4(SBUS_SMFLG_REG, SMFLG_PCMCIA_INT); 170 _reg_write_4(SBUS_SMFLG_REG, SMFLG_USB_INT); 171 172 /* connect to INTC */ 173 intc_intr_establish(I_CH1_SBUS, IPL_BIO, sbus_intr, 0); 174 } 175 176 void * 177 sbus_intr_establish(enum sbus_irq irq, int (*ih_func)(void *), void *ih_arg) 178 { 179 switch (irq) { 180 default: 181 panic("unknown IRQ"); 182 break; 183 case SBUS_IRQ_PCMCIA: 184 sbus_pcmcia_intr = ih_func; 185 sbus_pcmcia_context = ih_arg; 186 (*sbus_pcmcia_intr_enable)(); 187 break; 188 case SBUS_IRQ_USB: 189 sbus_usb_intr = ih_func; 190 sbus_usb_context = ih_arg; 191 break; 192 } 193 194 return (void *)irq; 195 } 196 197 void 198 sbus_intr_disestablish(void *handle) 199 { 200 int irq = (int)handle; 201 202 switch (irq) { 203 default: 204 panic("unknown IRQ"); 205 break; 206 case SBUS_IRQ_PCMCIA: 207 sbus_pcmcia_intr = sbus_spurious_intr; 208 (*sbus_pcmcia_intr_disable)(); 209 break; 210 case SBUS_IRQ_USB: 211 sbus_usb_intr = sbus_spurious_intr; 212 break; 213 } 214 } 215 216 int 217 sbus_intr(void *arg) 218 { 219 u_int32_t stat; 220 221 _playstation2_evcnt.sbus.ev_count++; 222 stat = _reg_read_4(SBUS_SMFLG_REG); 223 224 if (stat & SMFLG_PCMCIA_INT) { 225 (*sbus_pcmcia_intr_clear)(); 226 _reg_write_4(SBUS_SMFLG_REG, SMFLG_PCMCIA_INT); 227 (*sbus_pcmcia_intr)(sbus_pcmcia_context); 228 } 229 230 if (stat & SMFLG_USB_INT) { 231 _reg_write_4(SBUS_SMFLG_REG, SMFLG_USB_INT); 232 (*sbus_usb_intr)(sbus_usb_context); 233 } 234 235 (*sbus_pcmcia_intr_reinstall)(); 236 237 return (1); 238 } 239 240 int 241 sbus_spurious_intr(void *arg) 242 { 243 244 printf("spurious interrupt.\n"); 245 246 return (1); 247 } 248 249 /* SCPH-18000 */ 250 void 251 sbus_type2_pcmcia_intr_clear(void) 252 { 253 254 if (_reg_read_2(SBUS_PCMCIA_CSC1_REG16) & 0x080) 255 _reg_write_2(SBUS_PCMCIA_CSC1_REG16, 0xffff); 256 } 257 258 void 259 sbus_type2_pcmcia_intr_enable(void) 260 { 261 262 _reg_write_2(SBUS_PCMCIA_TIMR_REG16, 0); 263 } 264 265 void 266 sbus_type2_pcmcia_intr_disable(void) 267 { 268 269 _reg_write_2(SBUS_PCMCIA_TIMR_REG16, 1); 270 } 271 272 void 273 sbus_type2_pcmcia_intr_reinstall(void) 274 { 275 u_int16_t r = _reg_read_2(SBUS_PCMCIA_TIMR_REG16); 276 277 _reg_write_2(SBUS_PCMCIA_TIMR_REG16, 1); 278 _reg_write_2(SBUS_PCMCIA_TIMR_REG16, r); 279 } 280 281 /* SCPH-30000/35000 */ 282 void 283 sbus_type3_pcmcia_intr_clear(void) 284 { 285 /* nothing */ 286 } 287 288 void 289 sbus_type3_pcmcia_intr_enable(void) 290 { 291 292 _reg_write_2(SBUS_PCMCIA3_TIMR_REG16, 0); 293 } 294 295 void 296 sbus_type3_pcmcia_intr_disable(void) 297 { 298 299 _reg_write_2(SBUS_PCMCIA3_TIMR_REG16, 1); 300 } 301 302 void 303 sbus_type3_pcmcia_intr_reinstall(void) 304 { 305 u_int16_t r = _reg_read_2(SBUS_PCMCIA3_TIMR_REG16); 306 307 _reg_write_2(SBUS_PCMCIA3_TIMR_REG16, 1); 308 _reg_write_2(SBUS_PCMCIA3_TIMR_REG16, r); 309 } 310
Indexes created Tue Sep 23 07:09:52 GMT 2025