1/* 2 * FILE NAME 3 * drivers/pcmcia/vrc4173_cardu.c 4 * 5 * BRIEF MODULE DESCRIPTION 6 * NEC VRC4173 CARDU driver for Socket Services 7 * (This device doesn't support CardBus. it is supporting only 16bit PC Card.) 8 * 9 * Copyright 2002,2003 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> 10 * 11 * This program is free software; you can redistribute it and/or modify it 12 * under the terms of the GNU General Public License as published by the 13 * Free Software Foundation; either version 2 of the License, or (at your 14 * option) any later version. 15 * 16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 24 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 25 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 * You should have received a copy of the GNU General Public License along 28 * with this program; if not, write to the Free Software Foundation, Inc., 29 * 675 Mass Ave, Cambridge, MA 02139, USA. 30 */ 31#include <linux/init.h> 32#include <linux/module.h> 33#include <linux/pci.h> 34#include <linux/spinlock.h> 35#include <linux/types.h> 36 37#include <asm/io.h> 38 39#include <pcmcia/ss.h> 40 41#include "vrc4173_cardu.h" 42 43MODULE_DESCRIPTION("NEC VRC4173 CARDU driver for Socket Services"); 44MODULE_AUTHOR("Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>"); 45MODULE_LICENSE("GPL"); 46 47static int vrc4173_cardu_slots; 48 49static vrc4173_socket_t cardu_sockets[CARDU_MAX_SOCKETS]; 50 51extern struct socket_info_t *pcmcia_register_socket (int slot, 52 struct pccard_operations *vtable, 53 int use_bus_pm); 54extern void pcmcia_unregister_socket(struct socket_info_t *s); 55 56static inline uint8_t exca_readb(vrc4173_socket_t *socket, uint16_t offset) 57{ 58 return readb(socket->base + EXCA_REGS_BASE + offset); 59} 60 61static inline uint16_t exca_readw(vrc4173_socket_t *socket, uint16_t offset) 62{ 63 uint16_t val; 64 65 val = readb(socket->base + EXCA_REGS_BASE + offset); 66 val |= (u16)readb(socket->base + EXCA_REGS_BASE + offset + 1) << 8; 67 68 return val; 69} 70 71static inline void exca_writeb(vrc4173_socket_t *socket, uint16_t offset, uint8_t val) 72{ 73 writeb(val, socket->base + EXCA_REGS_BASE + offset); 74} 75 76static inline void exca_writew(vrc4173_socket_t *socket, uint8_t offset, uint16_t val) 77{ 78 writeb((u8)val, socket->base + EXCA_REGS_BASE + offset); 79 writeb((u8)(val >> 8), socket->base + EXCA_REGS_BASE + offset + 1); 80} 81 82static inline uint32_t cardbus_socket_readl(vrc4173_socket_t *socket, u16 offset) 83{ 84 return readl(socket->base + CARDBUS_SOCKET_REGS_BASE + offset); 85} 86 87static inline void cardbus_socket_writel(vrc4173_socket_t *socket, u16 offset, uint32_t val) 88{ 89 writel(val, socket->base + CARDBUS_SOCKET_REGS_BASE + offset); 90} 91 92static void cardu_pciregs_init(struct pci_dev *dev) 93{ 94 u32 syscnt; 95 u16 brgcnt; 96 u8 devcnt; 97 98 pci_write_config_dword(dev, 0x1c, 0x10000000); 99 pci_write_config_dword(dev, 0x20, 0x17fff000); 100 pci_write_config_dword(dev, 0x2c, 0); 101 pci_write_config_dword(dev, 0x30, 0xfffc); 102 103 pci_read_config_word(dev, BRGCNT, &brgcnt); 104 brgcnt &= ~IREQ_INT; 105 pci_write_config_word(dev, BRGCNT, brgcnt); 106 107 pci_read_config_dword(dev, SYSCNT, &syscnt); 108 syscnt &= ~(BAD_VCC_REQ_DISB|PCPCI_EN|CH_ASSIGN_MASK|SUB_ID_WR_EN|PCI_CLK_RIN); 109 syscnt |= (CH_ASSIGN_NODMA|ASYN_INT_MODE); 110 pci_write_config_dword(dev, SYSCNT, syscnt); 111 112 pci_read_config_byte(dev, DEVCNT, &devcnt); 113 devcnt &= ~(ZOOM_VIDEO_EN|SR_PCI_INT_SEL_MASK|PCI_INT_MODE|IRQ_MODE); 114 devcnt |= (SR_PCI_INT_SEL_NONE|IFG); 115 pci_write_config_byte(dev, DEVCNT, devcnt); 116 117 pci_write_config_byte(dev, CHIPCNT, S_PREF_DISB); 118 119 pci_write_config_byte(dev, SERRDIS, 0); 120} 121 122static int cardu_init(unsigned int slot) 123{ 124 vrc4173_socket_t *socket = &cardu_sockets[slot]; 125 126 cardu_pciregs_init(socket->dev); 127 128 /* CARD_SC bits are cleared by reading CARD_SC. */ 129 exca_writeb(socket, GLO_CNT, 0); 130 131 socket->cap.features |= SS_CAP_PCCARD | SS_CAP_PAGE_REGS; 132 socket->cap.irq_mask = 0; 133 socket->cap.map_size = 0x1000; 134 socket->cap.pci_irq = socket->dev->irq; 135 socket->events = 0; 136 spin_lock_init(socket->event_lock); 137 138 /* Enable PC Card status interrupts */ 139 exca_writeb(socket, CARD_SCI, CARD_DT_EN|RDY_EN|BAT_WAR_EN|BAT_DEAD_EN); 140 141 return 0; 142} 143 144static int cardu_register_callback(unsigned int sock, 145 void (*handler)(void *, unsigned int), 146 void * info) 147{ 148 vrc4173_socket_t *socket = &cardu_sockets[sock]; 149 150 socket->handler = handler; 151 socket->info = info; 152 153 return 0; 154} 155 156static int cardu_inquire_socket(unsigned int sock, socket_cap_t *cap) 157{ 158 vrc4173_socket_t *socket = &cardu_sockets[sock]; 159 160 *cap = socket->cap; 161 162 return 0; 163} 164 165static int cardu_get_status(unsigned int sock, u_int *value) 166{ 167 vrc4173_socket_t *socket = &cardu_sockets[sock]; 168 uint32_t state; 169 uint8_t status; 170 u_int val = 0; 171 172 status = exca_readb(socket, IF_STATUS); 173 if (status & CARD_PWR) val |= SS_POWERON; 174 if (status & READY) val |= SS_READY; 175 if (status & CARD_WP) val |= SS_WRPROT; 176 if ((status & (CARD_DETECT1|CARD_DETECT2)) == (CARD_DETECT1|CARD_DETECT2)) 177 val |= SS_DETECT; 178 if (exca_readb(socket, INT_GEN_CNT) & CARD_TYPE_IO) { 179 if (status & STSCHG) val |= SS_STSCHG; 180 } else { 181 status &= BV_DETECT_MASK; 182 if (status != BV_DETECT_GOOD) { 183 if (status == BV_DETECT_WARN) val |= SS_BATWARN; 184 else val |= SS_BATDEAD; 185 } 186 } 187 188 state = cardbus_socket_readl(socket, SKT_PRE_STATE); 189 if (state & VOL_3V_CARD_DT) val |= SS_3VCARD; 190 if (state & VOL_XV_CARD_DT) val |= SS_XVCARD; 191 if (state & CB_CARD_DT) val |= SS_CARDBUS; 192 if (!(state & 193 (VOL_YV_CARD_DT|VOL_XV_CARD_DT|VOL_3V_CARD_DT|VOL_5V_CARD_DT|CCD20|CCD10))) 194 val |= SS_PENDING; 195 196 *value = val; 197 198 return 0; 199} 200 201static inline uint8_t set_Vcc_value(u_char Vcc) 202{ 203 switch (Vcc) { 204 case 33: 205 return VCC_3V; 206 case 50: 207 return VCC_5V; 208 } 209 210 return VCC_0V; 211} 212 213static inline uint8_t set_Vpp_value(u_char Vpp) 214{ 215 switch (Vpp) { 216 case 33: 217 case 50: 218 return VPP_VCC; 219 case 120: 220 return VPP_12V; 221 } 222 223 return VPP_0V; 224} 225 226static int cardu_set_socket(unsigned int sock, socket_state_t *state) 227{ 228 vrc4173_socket_t *socket = &cardu_sockets[sock]; 229 uint8_t val; 230 231 if (((state->Vpp == 33) || (state->Vpp == 50)) && (state->Vpp != state->Vcc)) 232 return -EINVAL; 233 234 val = set_Vcc_value(state->Vcc); 235 val |= set_Vpp_value(state->Vpp); 236 if (state->flags & SS_OUTPUT_ENA) val |= CARD_OUT_EN; 237 exca_writeb(socket, PWR_CNT, val); 238 239 val = exca_readb(socket, INT_GEN_CNT) & CARD_REST0; 240 if (state->flags & SS_RESET) val &= ~CARD_REST0; 241 else val |= CARD_REST0; 242 if (state->flags & SS_IOCARD) val |= CARD_TYPE_IO; 243 exca_writeb(socket, INT_GEN_CNT, val); 244 245 return 0; 246} 247 248static int cardu_get_io_map(unsigned int sock, struct pccard_io_map *io) 249{ 250 vrc4173_socket_t *socket = &cardu_sockets[sock]; 251 uint8_t ioctl, window; 252 u_char map; 253 254 map = io->map; 255 if (map > 1) 256 return -EINVAL; 257 258 io->start = exca_readw(socket, IO_WIN_SA(map)); 259 io->stop = exca_readw(socket, IO_WIN_EA(map)); 260 261 ioctl = exca_readb(socket, IO_WIN_CNT); 262 window = exca_readb(socket, ADR_WIN_EN); 263 io->flags = (window & IO_WIN_EN(map)) ? MAP_ACTIVE : 0; 264 if (ioctl & IO_WIN_DATA_AUTOSZ(map)) 265 io->flags |= MAP_AUTOSZ; 266 else if (ioctl & IO_WIN_DATA_16BIT(map)) 267 io->flags |= MAP_16BIT; 268 269 return 0; 270} 271 272static int cardu_set_io_map(unsigned int sock, struct pccard_io_map *io) 273{ 274 vrc4173_socket_t *socket = &cardu_sockets[sock]; 275 uint16_t ioctl; 276 uint8_t window, enable; 277 u_char map; 278 279 map = io->map; 280 if (map > 1) 281 return -EINVAL; 282 283 window = exca_readb(socket, ADR_WIN_EN); 284 enable = IO_WIN_EN(map); 285 286 if (window & enable) { 287 window &= ~enable; 288 exca_writeb(socket, ADR_WIN_EN, window); 289 } 290 291 exca_writew(socket, IO_WIN_SA(map), io->start); 292 exca_writew(socket, IO_WIN_EA(map), io->stop); 293 294 ioctl = exca_readb(socket, IO_WIN_CNT) & ~IO_WIN_CNT_MASK(map); 295 if (io->flags & MAP_AUTOSZ) ioctl |= IO_WIN_DATA_AUTOSZ(map); 296 else if (io->flags & MAP_16BIT) ioctl |= IO_WIN_DATA_16BIT(map); 297 exca_writeb(socket, IO_WIN_CNT, ioctl); 298 299 if (io->flags & MAP_ACTIVE) 300 exca_writeb(socket, ADR_WIN_EN, window | enable); 301 302 return 0; 303} 304 305static int cardu_get_mem_map(unsigned int sock, struct pccard_mem_map *mem) 306{ 307 vrc4173_socket_t *socket = &cardu_sockets[sock]; 308 uint32_t start, stop, offset, page; 309 uint8_t window; 310 u_char map; 311 312 map = mem->map; 313 if (map > 4) 314 return -EINVAL; 315 316 window = exca_readb(socket, ADR_WIN_EN); 317 mem->flags = (window & MEM_WIN_EN(map)) ? MAP_ACTIVE : 0; 318 319 start = exca_readw(socket, MEM_WIN_SA(map)); 320 mem->flags |= (start & MEM_WIN_DSIZE) ? MAP_16BIT : 0; 321 start = (start & 0x0fff) << 12; 322 323 stop = exca_readw(socket, MEM_WIN_EA(map)); 324 stop = ((stop & 0x0fff) << 12) + 0x0fff; 325 326 offset = exca_readw(socket, MEM_WIN_OA(map)); 327 mem->flags |= (offset & MEM_WIN_WP) ? MAP_WRPROT : 0; 328 mem->flags |= (offset & MEM_WIN_REGSET) ? MAP_ATTRIB : 0; 329 offset = ((offset & 0x3fff) << 12) + start; 330 mem->card_start = offset & 0x03ffffff; 331 332 page = exca_readb(socket, MEM_WIN_SAU(map)) << 24; 333 mem->sys_start = start + page; 334 mem->sys_stop = start + page; 335 336 return 0; 337} 338 339static int cardu_set_mem_map(unsigned int sock, struct pccard_mem_map *mem) 340{ 341 vrc4173_socket_t *socket = &cardu_sockets[sock]; 342 uint16_t value; 343 uint8_t window, enable; 344 u_long sys_start, sys_stop, card_start; 345 u_char map; 346 347 map = mem->map; 348 sys_start = mem->sys_start; 349 sys_stop = mem->sys_stop; 350 card_start = mem->card_start; 351 352 if (map > 4 || sys_start > sys_stop || ((sys_start ^ sys_stop) >> 24) || 353 (card_start >> 26)) 354 return -EINVAL; 355 356 window = exca_readb(socket, ADR_WIN_EN); 357 enable = MEM_WIN_EN(map); 358 if (window & enable) { 359 window &= ~enable; 360 exca_writeb(socket, ADR_WIN_EN, window); 361 } 362 363 exca_writeb(socket, MEM_WIN_SAU(map), sys_start >> 24); 364 365 value = (sys_start >> 12) & 0x0fff; 366 if (mem->flags & MAP_16BIT) value |= MEM_WIN_DSIZE; 367 exca_writew(socket, MEM_WIN_SA(map), value); 368 369 value = (sys_stop >> 12) & 0x0fff; 370 exca_writew(socket, MEM_WIN_EA(map), value); 371 372 value = ((card_start - sys_start) >> 12) & 0x3fff; 373 if (mem->flags & MAP_WRPROT) value |= MEM_WIN_WP; 374 if (mem->flags & MAP_ATTRIB) value |= MEM_WIN_REGSET; 375 exca_writew(socket, MEM_WIN_OA(map), value); 376 377 if (mem->flags & MAP_ACTIVE) 378 exca_writeb(socket, ADR_WIN_EN, window | enable); 379 380 return 0; 381} 382 383static void cardu_proc_setup(unsigned int sock, struct proc_dir_entry *base) 384{ 385} 386 387static struct pccard_operations cardu_operations = { 388 .init = cardu_init, 389 .register_callback = cardu_register_callback, 390 .inquire_socket = cardu_inquire_socket, 391 .get_status = cardu_get_status, 392 .set_socket = cardu_set_socket, 393 .get_io_map = cardu_get_io_map, 394 .set_io_map = cardu_set_io_map, 395 .get_mem_map = cardu_get_mem_map, 396 .set_mem_map = cardu_set_mem_map, 397 .proc_setup = cardu_proc_setup, 398}; 399 400static void cardu_bh(void *data) 401{ 402 vrc4173_socket_t *socket = (vrc4173_socket_t *)data; 403 uint16_t events; 404 405 spin_lock_irq(&socket->event_lock); 406 events = socket->events; 407 socket->events = 0; 408 spin_unlock_irq(&socket->event_lock); 409 410 if (socket->handler) 411 socket->handler(socket->info, events); 412} 413 414static uint16_t get_events(vrc4173_socket_t *socket) 415{ 416 uint16_t events = 0; 417 uint8_t csc, status; 418 419 status = exca_readb(socket, IF_STATUS); 420 csc = exca_readb(socket, CARD_SC); 421 if ((csc & CARD_DT_CHG) && 422 ((status & (CARD_DETECT1|CARD_DETECT2)) == (CARD_DETECT1|CARD_DETECT2))) 423 events |= SS_DETECT; 424 425 if ((csc & RDY_CHG) && (status & READY)) 426 events |= SS_READY; 427 428 if (exca_readb(socket, INT_GEN_CNT) & CARD_TYPE_IO) { 429 if ((csc & BAT_DEAD_ST_CHG) && (status & STSCHG)) 430 events |= SS_STSCHG; 431 } else { 432 if (csc & (BAT_WAR_CHG|BAT_DEAD_ST_CHG)) { 433 if ((status & BV_DETECT_MASK) != BV_DETECT_GOOD) { 434 if (status == BV_DETECT_WARN) events |= SS_BATWARN; 435 else events |= SS_BATDEAD; 436 } 437 } 438 } 439 440 return events; 441} 442 443static void cardu_interrupt(int irq, void *dev_id) 444{ 445 vrc4173_socket_t *socket = (vrc4173_socket_t *)dev_id; 446 uint16_t events; 447 448 INIT_WORK(&socket->tq_work, cardu_bh, socket); 449 450 events = get_events(socket); 451 if (events) { 452 spin_lock(&socket->event_lock); 453 socket->events |= events; 454 spin_unlock(&socket->event_lock); 455 schedule_work(&socket->tq_work); 456 } 457} 458 459static int __devinit vrc4173_cardu_probe(struct pci_dev *dev, 460 const struct pci_device_id *ent) 461{ 462 vrc4173_socket_t *socket; 463 unsigned long start, len, flags; 464 int slot, err; 465 466 slot = vrc4173_cardu_slots++; 467 socket = &cardu_sockets[slot]; 468 if (socket->noprobe != 0) 469 return -EBUSY; 470 471 sprintf(socket->name, "NEC VRC4173 CARDU%1d", slot+1); 472 473 if ((err = pci_enable_device(dev)) < 0) 474 return err; 475 476 start = pci_resource_start(dev, 0); 477 if (start == 0) 478 return -ENODEV; 479 480 len = pci_resource_len(dev, 0); 481 if (len == 0) 482 return -ENODEV; 483 484 if (((flags = pci_resource_flags(dev, 0)) & IORESOURCE_MEM) == 0) 485 return -EBUSY; 486 487 if ((err = pci_request_regions(dev, socket->name)) < 0) 488 return err; 489 490 socket->base = ioremap(start, len); 491 if (socket->base == NULL) 492 return -ENODEV; 493 494 socket->dev = dev; 495 496 socket->pcmcia_socket = pcmcia_register_socket(slot, &cardu_operations, 1); 497 if (socket->pcmcia_socket == NULL) { 498 iounmap(socket->base); 499 socket->base = NULL; 500 return -ENOMEM; 501 } 502 503 if (request_irq(dev->irq, cardu_interrupt, IRQF_SHARED, socket->name, socket) < 0) { 504 pcmcia_unregister_socket(socket->pcmcia_socket); 505 socket->pcmcia_socket = NULL; 506 iounmap(socket->base); 507 socket->base = NULL; 508 return -EBUSY; 509 } 510 511 printk(KERN_INFO "%s at %#08lx, IRQ %d\n", socket->name, start, dev->irq); 512 513 return 0; 514} 515 516static int __devinit vrc4173_cardu_setup(char *options) 517{ 518 if (options == NULL || *options == '\0') 519 return 1; 520 521 if (strncmp(options, "cardu1:", 7) == 0) { 522 options += 7; 523 if (*options != '\0') { 524 if (strncmp(options, "noprobe", 7) == 0) { 525 cardu_sockets[CARDU1].noprobe = 1; 526 options += 7; 527 } 528 529 if (*options != ',') 530 return 1; 531 } else 532 return 1; 533 } 534 535 if (strncmp(options, "cardu2:", 7) == 0) { 536 options += 7; 537 if ((*options != '\0') && (strncmp(options, "noprobe", 7) == 0)) 538 cardu_sockets[CARDU2].noprobe = 1; 539 } 540 541 return 1; 542} 543 544__setup("vrc4173_cardu=", vrc4173_cardu_setup); 545 546static struct pci_device_id vrc4173_cardu_id_table[] __devinitdata = { 547 { .vendor = PCI_VENDOR_ID_NEC, 548 .device = PCI_DEVICE_ID_NEC_NAPCCARD, 549 .subvendor = PCI_ANY_ID, 550 .subdevice = PCI_ANY_ID, }, 551 {0, } 552}; 553 554static struct pci_driver vrc4173_cardu_driver = { 555 .name = "NEC VRC4173 CARDU", 556 .probe = vrc4173_cardu_probe, 557 .id_table = vrc4173_cardu_id_table, 558}; 559 560static int __devinit vrc4173_cardu_init(void) 561{ 562 vrc4173_cardu_slots = 0; 563 564 return pci_register_driver(&vrc4173_cardu_driver); 565} 566 567static void __devexit vrc4173_cardu_exit(void) 568{ 569 pci_unregister_driver(&vrc4173_cardu_driver); 570} 571 572module_init(vrc4173_cardu_init); 573module_exit(vrc4173_cardu_exit); 574MODULE_DEVICE_TABLE(pci, vrc4173_cardu_id_table); 575