tc6393xb.c (18218B)
1 /* 2 * Toshiba TC6393XB I/O Controller. 3 * Found in Sharp Zaurus SL-6000 (tosa) or some 4 * Toshiba e-Series PDAs. 5 * 6 * Most features are currently unsupported!!! 7 * 8 * This code is licensed under the GNU GPL v2. 9 * 10 * Contributions after 2012-01-13 are licensed under the terms of the 11 * GNU GPL, version 2 or (at your option) any later version. 12 */ 13 14 #include "qemu/osdep.h" 15 #include "qapi/error.h" 16 #include "qemu/host-utils.h" 17 #include "hw/irq.h" 18 #include "hw/display/tc6393xb.h" 19 #include "exec/memory.h" 20 #include "hw/block/flash.h" 21 #include "ui/console.h" 22 #include "ui/pixel_ops.h" 23 #include "sysemu/blockdev.h" 24 25 #define IRQ_TC6393_NAND 0 26 #define IRQ_TC6393_MMC 1 27 #define IRQ_TC6393_OHCI 2 28 #define IRQ_TC6393_SERIAL 3 29 #define IRQ_TC6393_FB 4 30 31 #define TC6393XB_NR_IRQS 8 32 33 #define TC6393XB_GPIOS 16 34 35 #define SCR_REVID 0x08 /* b Revision ID */ 36 #define SCR_ISR 0x50 /* b Interrupt Status */ 37 #define SCR_IMR 0x52 /* b Interrupt Mask */ 38 #define SCR_IRR 0x54 /* b Interrupt Routing */ 39 #define SCR_GPER 0x60 /* w GP Enable */ 40 #define SCR_GPI_SR(i) (0x64 + (i)) /* b3 GPI Status */ 41 #define SCR_GPI_IMR(i) (0x68 + (i)) /* b3 GPI INT Mask */ 42 #define SCR_GPI_EDER(i) (0x6c + (i)) /* b3 GPI Edge Detect Enable */ 43 #define SCR_GPI_LIR(i) (0x70 + (i)) /* b3 GPI Level Invert */ 44 #define SCR_GPO_DSR(i) (0x78 + (i)) /* b3 GPO Data Set */ 45 #define SCR_GPO_DOECR(i) (0x7c + (i)) /* b3 GPO Data OE Control */ 46 #define SCR_GP_IARCR(i) (0x80 + (i)) /* b3 GP Internal Active Register Control */ 47 #define SCR_GP_IARLCR(i) (0x84 + (i)) /* b3 GP INTERNAL Active Register Level Control */ 48 #define SCR_GPI_BCR(i) (0x88 + (i)) /* b3 GPI Buffer Control */ 49 #define SCR_GPA_IARCR 0x8c /* w GPa Internal Active Register Control */ 50 #define SCR_GPA_IARLCR 0x90 /* w GPa Internal Active Register Level Control */ 51 #define SCR_GPA_BCR 0x94 /* w GPa Buffer Control */ 52 #define SCR_CCR 0x98 /* w Clock Control */ 53 #define SCR_PLL2CR 0x9a /* w PLL2 Control */ 54 #define SCR_PLL1CR 0x9c /* l PLL1 Control */ 55 #define SCR_DIARCR 0xa0 /* b Device Internal Active Register Control */ 56 #define SCR_DBOCR 0xa1 /* b Device Buffer Off Control */ 57 #define SCR_FER 0xe0 /* b Function Enable */ 58 #define SCR_MCR 0xe4 /* w Mode Control */ 59 #define SCR_CONFIG 0xfc /* b Configuration Control */ 60 #define SCR_DEBUG 0xff /* b Debug */ 61 62 #define NAND_CFG_COMMAND 0x04 /* w Command */ 63 #define NAND_CFG_BASE 0x10 /* l Control Base Address */ 64 #define NAND_CFG_INTP 0x3d /* b Interrupt Pin */ 65 #define NAND_CFG_INTE 0x48 /* b Int Enable */ 66 #define NAND_CFG_EC 0x4a /* b Event Control */ 67 #define NAND_CFG_ICC 0x4c /* b Internal Clock Control */ 68 #define NAND_CFG_ECCC 0x5b /* b ECC Control */ 69 #define NAND_CFG_NFTC 0x60 /* b NAND Flash Transaction Control */ 70 #define NAND_CFG_NFM 0x61 /* b NAND Flash Monitor */ 71 #define NAND_CFG_NFPSC 0x62 /* b NAND Flash Power Supply Control */ 72 #define NAND_CFG_NFDC 0x63 /* b NAND Flash Detect Control */ 73 74 #define NAND_DATA 0x00 /* l Data */ 75 #define NAND_MODE 0x04 /* b Mode */ 76 #define NAND_STATUS 0x05 /* b Status */ 77 #define NAND_ISR 0x06 /* b Interrupt Status */ 78 #define NAND_IMR 0x07 /* b Interrupt Mask */ 79 80 #define NAND_MODE_WP 0x80 81 #define NAND_MODE_CE 0x10 82 #define NAND_MODE_ALE 0x02 83 #define NAND_MODE_CLE 0x01 84 #define NAND_MODE_ECC_MASK 0x60 85 #define NAND_MODE_ECC_EN 0x20 86 #define NAND_MODE_ECC_READ 0x40 87 #define NAND_MODE_ECC_RST 0x60 88 89 struct TC6393xbState { 90 MemoryRegion iomem; 91 qemu_irq irq; 92 qemu_irq *sub_irqs; 93 struct { 94 uint8_t ISR; 95 uint8_t IMR; 96 uint8_t IRR; 97 uint16_t GPER; 98 uint8_t GPI_SR[3]; 99 uint8_t GPI_IMR[3]; 100 uint8_t GPI_EDER[3]; 101 uint8_t GPI_LIR[3]; 102 uint8_t GP_IARCR[3]; 103 uint8_t GP_IARLCR[3]; 104 uint8_t GPI_BCR[3]; 105 uint16_t GPA_IARCR; 106 uint16_t GPA_IARLCR; 107 uint16_t CCR; 108 uint16_t PLL2CR; 109 uint32_t PLL1CR; 110 uint8_t DIARCR; 111 uint8_t DBOCR; 112 uint8_t FER; 113 uint16_t MCR; 114 uint8_t CONFIG; 115 uint8_t DEBUG; 116 } scr; 117 uint32_t gpio_dir; 118 uint32_t gpio_level; 119 uint32_t prev_level; 120 qemu_irq handler[TC6393XB_GPIOS]; 121 qemu_irq *gpio_in; 122 123 struct { 124 uint8_t mode; 125 uint8_t isr; 126 uint8_t imr; 127 } nand; 128 int nand_enable; 129 uint32_t nand_phys; 130 DeviceState *flash; 131 ECCState ecc; 132 133 QemuConsole *con; 134 MemoryRegion vram; 135 uint16_t *vram_ptr; 136 uint32_t scr_width, scr_height; /* in pixels */ 137 qemu_irq l3v; 138 unsigned blank : 1, 139 blanked : 1; 140 }; 141 142 static void tc6393xb_gpio_set(void *opaque, int line, int level) 143 { 144 // TC6393xbState *s = opaque; 145 146 if (line > TC6393XB_GPIOS) { 147 printf("%s: No GPIO pin %i\n", __func__, line); 148 return; 149 } 150 151 // FIXME: how does the chip reflect the GPIO input level change? 152 } 153 154 static void tc6393xb_gpio_handler_update(TC6393xbState *s) 155 { 156 uint32_t level, diff; 157 int bit; 158 159 level = s->gpio_level & s->gpio_dir; 160 level &= MAKE_64BIT_MASK(0, TC6393XB_GPIOS); 161 162 for (diff = s->prev_level ^ level; diff; diff ^= 1 << bit) { 163 bit = ctz32(diff); 164 qemu_set_irq(s->handler[bit], (level >> bit) & 1); 165 } 166 167 s->prev_level = level; 168 } 169 170 qemu_irq tc6393xb_l3v_get(TC6393xbState *s) 171 { 172 return s->l3v; 173 } 174 175 static void tc6393xb_l3v(void *opaque, int line, int level) 176 { 177 TC6393xbState *s = opaque; 178 s->blank = !level; 179 fprintf(stderr, "L3V: %d\n", level); 180 } 181 182 static void tc6393xb_sub_irq(void *opaque, int line, int level) { 183 TC6393xbState *s = opaque; 184 uint8_t isr = s->scr.ISR; 185 if (level) 186 isr |= 1 << line; 187 else 188 isr &= ~(1 << line); 189 s->scr.ISR = isr; 190 qemu_set_irq(s->irq, isr & s->scr.IMR); 191 } 192 193 #define SCR_REG_B(N) \ 194 case SCR_ ##N: return s->scr.N 195 #define SCR_REG_W(N) \ 196 case SCR_ ##N: return s->scr.N; \ 197 case SCR_ ##N + 1: return s->scr.N >> 8; 198 #define SCR_REG_L(N) \ 199 case SCR_ ##N: return s->scr.N; \ 200 case SCR_ ##N + 1: return s->scr.N >> 8; \ 201 case SCR_ ##N + 2: return s->scr.N >> 16; \ 202 case SCR_ ##N + 3: return s->scr.N >> 24; 203 #define SCR_REG_A(N) \ 204 case SCR_ ##N(0): return s->scr.N[0]; \ 205 case SCR_ ##N(1): return s->scr.N[1]; \ 206 case SCR_ ##N(2): return s->scr.N[2] 207 208 static uint32_t tc6393xb_scr_readb(TC6393xbState *s, hwaddr addr) 209 { 210 switch (addr) { 211 case SCR_REVID: 212 return 3; 213 case SCR_REVID+1: 214 return 0; 215 SCR_REG_B(ISR); 216 SCR_REG_B(IMR); 217 SCR_REG_B(IRR); 218 SCR_REG_W(GPER); 219 SCR_REG_A(GPI_SR); 220 SCR_REG_A(GPI_IMR); 221 SCR_REG_A(GPI_EDER); 222 SCR_REG_A(GPI_LIR); 223 case SCR_GPO_DSR(0): 224 case SCR_GPO_DSR(1): 225 case SCR_GPO_DSR(2): 226 return (s->gpio_level >> ((addr - SCR_GPO_DSR(0)) * 8)) & 0xff; 227 case SCR_GPO_DOECR(0): 228 case SCR_GPO_DOECR(1): 229 case SCR_GPO_DOECR(2): 230 return (s->gpio_dir >> ((addr - SCR_GPO_DOECR(0)) * 8)) & 0xff; 231 SCR_REG_A(GP_IARCR); 232 SCR_REG_A(GP_IARLCR); 233 SCR_REG_A(GPI_BCR); 234 SCR_REG_W(GPA_IARCR); 235 SCR_REG_W(GPA_IARLCR); 236 SCR_REG_W(CCR); 237 SCR_REG_W(PLL2CR); 238 SCR_REG_L(PLL1CR); 239 SCR_REG_B(DIARCR); 240 SCR_REG_B(DBOCR); 241 SCR_REG_B(FER); 242 SCR_REG_W(MCR); 243 SCR_REG_B(CONFIG); 244 SCR_REG_B(DEBUG); 245 } 246 fprintf(stderr, "tc6393xb_scr: unhandled read at %08x\n", (uint32_t) addr); 247 return 0; 248 } 249 #undef SCR_REG_B 250 #undef SCR_REG_W 251 #undef SCR_REG_L 252 #undef SCR_REG_A 253 254 #define SCR_REG_B(N) \ 255 case SCR_ ##N: s->scr.N = value; return; 256 #define SCR_REG_W(N) \ 257 case SCR_ ##N: s->scr.N = (s->scr.N & ~0xff) | (value & 0xff); return; \ 258 case SCR_ ##N + 1: s->scr.N = (s->scr.N & 0xff) | (value << 8); return 259 #define SCR_REG_L(N) \ 260 case SCR_ ##N: s->scr.N = (s->scr.N & ~0xff) | (value & 0xff); return; \ 261 case SCR_ ##N + 1: s->scr.N = (s->scr.N & ~(0xff << 8)) | (value & (0xff << 8)); return; \ 262 case SCR_ ##N + 2: s->scr.N = (s->scr.N & ~(0xff << 16)) | (value & (0xff << 16)); return; \ 263 case SCR_ ##N + 3: s->scr.N = (s->scr.N & ~(0xff << 24)) | (value & (0xff << 24)); return; 264 #define SCR_REG_A(N) \ 265 case SCR_ ##N(0): s->scr.N[0] = value; return; \ 266 case SCR_ ##N(1): s->scr.N[1] = value; return; \ 267 case SCR_ ##N(2): s->scr.N[2] = value; return 268 269 static void tc6393xb_scr_writeb(TC6393xbState *s, hwaddr addr, uint32_t value) 270 { 271 switch (addr) { 272 SCR_REG_B(ISR); 273 SCR_REG_B(IMR); 274 SCR_REG_B(IRR); 275 SCR_REG_W(GPER); 276 SCR_REG_A(GPI_SR); 277 SCR_REG_A(GPI_IMR); 278 SCR_REG_A(GPI_EDER); 279 SCR_REG_A(GPI_LIR); 280 case SCR_GPO_DSR(0): 281 case SCR_GPO_DSR(1): 282 case SCR_GPO_DSR(2): 283 s->gpio_level = (s->gpio_level & ~(0xff << ((addr - SCR_GPO_DSR(0))*8))) | ((value & 0xff) << ((addr - SCR_GPO_DSR(0))*8)); 284 tc6393xb_gpio_handler_update(s); 285 return; 286 case SCR_GPO_DOECR(0): 287 case SCR_GPO_DOECR(1): 288 case SCR_GPO_DOECR(2): 289 s->gpio_dir = (s->gpio_dir & ~(0xff << ((addr - SCR_GPO_DOECR(0))*8))) | ((value & 0xff) << ((addr - SCR_GPO_DOECR(0))*8)); 290 tc6393xb_gpio_handler_update(s); 291 return; 292 SCR_REG_A(GP_IARCR); 293 SCR_REG_A(GP_IARLCR); 294 SCR_REG_A(GPI_BCR); 295 SCR_REG_W(GPA_IARCR); 296 SCR_REG_W(GPA_IARLCR); 297 SCR_REG_W(CCR); 298 SCR_REG_W(PLL2CR); 299 SCR_REG_L(PLL1CR); 300 SCR_REG_B(DIARCR); 301 SCR_REG_B(DBOCR); 302 SCR_REG_B(FER); 303 SCR_REG_W(MCR); 304 SCR_REG_B(CONFIG); 305 SCR_REG_B(DEBUG); 306 } 307 fprintf(stderr, "tc6393xb_scr: unhandled write at %08x: %02x\n", 308 (uint32_t) addr, value & 0xff); 309 } 310 #undef SCR_REG_B 311 #undef SCR_REG_W 312 #undef SCR_REG_L 313 #undef SCR_REG_A 314 315 static void tc6393xb_nand_irq(TC6393xbState *s) { 316 qemu_set_irq(s->sub_irqs[IRQ_TC6393_NAND], 317 (s->nand.imr & 0x80) && (s->nand.imr & s->nand.isr)); 318 } 319 320 static uint32_t tc6393xb_nand_cfg_readb(TC6393xbState *s, hwaddr addr) { 321 switch (addr) { 322 case NAND_CFG_COMMAND: 323 return s->nand_enable ? 2 : 0; 324 case NAND_CFG_BASE: 325 case NAND_CFG_BASE + 1: 326 case NAND_CFG_BASE + 2: 327 case NAND_CFG_BASE + 3: 328 return s->nand_phys >> (addr - NAND_CFG_BASE); 329 } 330 fprintf(stderr, "tc6393xb_nand_cfg: unhandled read at %08x\n", (uint32_t) addr); 331 return 0; 332 } 333 static void tc6393xb_nand_cfg_writeb(TC6393xbState *s, hwaddr addr, uint32_t value) { 334 switch (addr) { 335 case NAND_CFG_COMMAND: 336 s->nand_enable = (value & 0x2); 337 return; 338 case NAND_CFG_BASE: 339 case NAND_CFG_BASE + 1: 340 case NAND_CFG_BASE + 2: 341 case NAND_CFG_BASE + 3: 342 s->nand_phys &= ~(0xff << ((addr - NAND_CFG_BASE) * 8)); 343 s->nand_phys |= (value & 0xff) << ((addr - NAND_CFG_BASE) * 8); 344 return; 345 } 346 fprintf(stderr, "tc6393xb_nand_cfg: unhandled write at %08x: %02x\n", 347 (uint32_t) addr, value & 0xff); 348 } 349 350 static uint32_t tc6393xb_nand_readb(TC6393xbState *s, hwaddr addr) { 351 switch (addr) { 352 case NAND_DATA + 0: 353 case NAND_DATA + 1: 354 case NAND_DATA + 2: 355 case NAND_DATA + 3: 356 return nand_getio(s->flash); 357 case NAND_MODE: 358 return s->nand.mode; 359 case NAND_STATUS: 360 return 0x14; 361 case NAND_ISR: 362 return s->nand.isr; 363 case NAND_IMR: 364 return s->nand.imr; 365 } 366 fprintf(stderr, "tc6393xb_nand: unhandled read at %08x\n", (uint32_t) addr); 367 return 0; 368 } 369 static void tc6393xb_nand_writeb(TC6393xbState *s, hwaddr addr, uint32_t value) { 370 // fprintf(stderr, "tc6393xb_nand: write at %08x: %02x\n", 371 // (uint32_t) addr, value & 0xff); 372 switch (addr) { 373 case NAND_DATA + 0: 374 case NAND_DATA + 1: 375 case NAND_DATA + 2: 376 case NAND_DATA + 3: 377 nand_setio(s->flash, value); 378 s->nand.isr |= 1; 379 tc6393xb_nand_irq(s); 380 return; 381 case NAND_MODE: 382 s->nand.mode = value; 383 nand_setpins(s->flash, 384 value & NAND_MODE_CLE, 385 value & NAND_MODE_ALE, 386 !(value & NAND_MODE_CE), 387 value & NAND_MODE_WP, 388 0); // FIXME: gnd 389 switch (value & NAND_MODE_ECC_MASK) { 390 case NAND_MODE_ECC_RST: 391 ecc_reset(&s->ecc); 392 break; 393 case NAND_MODE_ECC_READ: 394 // FIXME 395 break; 396 case NAND_MODE_ECC_EN: 397 ecc_reset(&s->ecc); 398 } 399 return; 400 case NAND_ISR: 401 s->nand.isr = value; 402 tc6393xb_nand_irq(s); 403 return; 404 case NAND_IMR: 405 s->nand.imr = value; 406 tc6393xb_nand_irq(s); 407 return; 408 } 409 fprintf(stderr, "tc6393xb_nand: unhandled write at %08x: %02x\n", 410 (uint32_t) addr, value & 0xff); 411 } 412 413 static void tc6393xb_draw_graphic(TC6393xbState *s, int full_update) 414 { 415 DisplaySurface *surface = qemu_console_surface(s->con); 416 int i; 417 uint16_t *data_buffer; 418 uint8_t *data_display; 419 420 data_buffer = s->vram_ptr; 421 data_display = surface_data(surface); 422 for (i = 0; i < s->scr_height; i++) { 423 int j; 424 for (j = 0; j < s->scr_width; j++, data_display += 4, data_buffer++) { 425 uint16_t color = *data_buffer; 426 uint32_t dest_color = rgb_to_pixel32( 427 ((color & 0xf800) * 0x108) >> 11, 428 ((color & 0x7e0) * 0x41) >> 9, 429 ((color & 0x1f) * 0x21) >> 2 430 ); 431 *(uint32_t *)data_display = dest_color; 432 } 433 } 434 dpy_gfx_update_full(s->con); 435 } 436 437 static void tc6393xb_draw_blank(TC6393xbState *s, int full_update) 438 { 439 DisplaySurface *surface = qemu_console_surface(s->con); 440 int i, w; 441 uint8_t *d; 442 443 if (!full_update) 444 return; 445 446 w = s->scr_width * surface_bytes_per_pixel(surface); 447 d = surface_data(surface); 448 for(i = 0; i < s->scr_height; i++) { 449 memset(d, 0, w); 450 d += surface_stride(surface); 451 } 452 453 dpy_gfx_update_full(s->con); 454 } 455 456 static void tc6393xb_update_display(void *opaque) 457 { 458 TC6393xbState *s = opaque; 459 DisplaySurface *surface = qemu_console_surface(s->con); 460 int full_update; 461 462 if (s->scr_width == 0 || s->scr_height == 0) 463 return; 464 465 full_update = 0; 466 if (s->blanked != s->blank) { 467 s->blanked = s->blank; 468 full_update = 1; 469 } 470 if (s->scr_width != surface_width(surface) || 471 s->scr_height != surface_height(surface)) { 472 qemu_console_resize(s->con, s->scr_width, s->scr_height); 473 full_update = 1; 474 } 475 if (s->blanked) 476 tc6393xb_draw_blank(s, full_update); 477 else 478 tc6393xb_draw_graphic(s, full_update); 479 } 480 481 482 static uint64_t tc6393xb_readb(void *opaque, hwaddr addr, 483 unsigned size) 484 { 485 TC6393xbState *s = opaque; 486 487 switch (addr >> 8) { 488 case 0: 489 return tc6393xb_scr_readb(s, addr & 0xff); 490 case 1: 491 return tc6393xb_nand_cfg_readb(s, addr & 0xff); 492 }; 493 494 if ((addr &~0xff) == s->nand_phys && s->nand_enable) { 495 // return tc6393xb_nand_readb(s, addr & 0xff); 496 uint8_t d = tc6393xb_nand_readb(s, addr & 0xff); 497 // fprintf(stderr, "tc6393xb_nand: read at %08x: %02hhx\n", (uint32_t) addr, d); 498 return d; 499 } 500 501 // fprintf(stderr, "tc6393xb: unhandled read at %08x\n", (uint32_t) addr); 502 return 0; 503 } 504 505 static void tc6393xb_writeb(void *opaque, hwaddr addr, 506 uint64_t value, unsigned size) { 507 TC6393xbState *s = opaque; 508 509 switch (addr >> 8) { 510 case 0: 511 tc6393xb_scr_writeb(s, addr & 0xff, value); 512 return; 513 case 1: 514 tc6393xb_nand_cfg_writeb(s, addr & 0xff, value); 515 return; 516 }; 517 518 if ((addr &~0xff) == s->nand_phys && s->nand_enable) 519 tc6393xb_nand_writeb(s, addr & 0xff, value); 520 else 521 fprintf(stderr, "tc6393xb: unhandled write at %08x: %02x\n", 522 (uint32_t) addr, (int)value & 0xff); 523 } 524 525 static const GraphicHwOps tc6393xb_gfx_ops = { 526 .gfx_update = tc6393xb_update_display, 527 }; 528 529 TC6393xbState *tc6393xb_init(MemoryRegion *sysmem, uint32_t base, qemu_irq irq) 530 { 531 TC6393xbState *s; 532 DriveInfo *nand; 533 static const MemoryRegionOps tc6393xb_ops = { 534 .read = tc6393xb_readb, 535 .write = tc6393xb_writeb, 536 .endianness = DEVICE_NATIVE_ENDIAN, 537 .impl = { 538 .min_access_size = 1, 539 .max_access_size = 1, 540 }, 541 }; 542 543 s = g_new0(TC6393xbState, 1); 544 s->irq = irq; 545 s->gpio_in = qemu_allocate_irqs(tc6393xb_gpio_set, s, TC6393XB_GPIOS); 546 547 s->l3v = qemu_allocate_irq(tc6393xb_l3v, s, 0); 548 s->blanked = 1; 549 550 s->sub_irqs = qemu_allocate_irqs(tc6393xb_sub_irq, s, TC6393XB_NR_IRQS); 551 552 nand = drive_get(IF_MTD, 0, 0); 553 s->flash = nand_init(nand ? blk_by_legacy_dinfo(nand) : NULL, 554 NAND_MFR_TOSHIBA, 0x76); 555 556 memory_region_init_io(&s->iomem, NULL, &tc6393xb_ops, s, "tc6393xb", 0x10000); 557 memory_region_add_subregion(sysmem, base, &s->iomem); 558 559 memory_region_init_ram(&s->vram, NULL, "tc6393xb.vram", 0x100000, 560 &error_fatal); 561 s->vram_ptr = memory_region_get_ram_ptr(&s->vram); 562 memory_region_add_subregion(sysmem, base + 0x100000, &s->vram); 563 s->scr_width = 480; 564 s->scr_height = 640; 565 s->con = graphic_console_init(NULL, 0, &tc6393xb_gfx_ops, s); 566 567 return s; 568 }