drivers/ti1225/ti1225.c

   1 /*
   2 ti1225.c
   3
   4 Created:        Dec 2005 by Philip Homburg
   5 */
   6
   7 #include <minix/drivers.h>
   8 #include <minix/driver.h>
   9 #include <machine/pci.h>
  10 #include <machine/vm.h>
  11
  12 #include "ti1225.h"
  13 #include "i82365.h"
  14
  15 /* The use of interrupts is not yet ready for prime time */
  16 #define USE_INTS        0
  17
  18 #define NR_PORTS 2
  19
  20 PRIVATE struct port
  21 {
  22         unsigned p_flags;
  23         int p_devind;
  24         u8_t p_cb_busnr;
  25         u16_t p_exca_port;
  26 #if USE_INTS
  27         int p_irq;
  28         int p_hook;
  29 #endif
  30         char *base_ptr;
  31         volatile struct csr *csr_ptr;
  32
  33         char buffer[2*I386_PAGE_SIZE];
  34 } ports[NR_PORTS];
  35
  36 #define PF_PRESENT      1
  37
  38 struct pcitab
  39 {
  40         u16_t vid;
  41         u16_t did;
  42         int checkclass;
  43 };
  44
  45 PRIVATE struct pcitab pcitab_ti[]=
  46 {
  47         { 0x104C, 0xAC1C, 0 },          /* TI PCI1225 */
  48
  49         { 0x0000, 0x0000, 0 }
  50 };
  51 PRIVATE char *progname;
  52 PRIVATE int debug;
  53
  54 FORWARD _PROTOTYPE( void hw_init, (struct port *pp)                     );
  55 FORWARD _PROTOTYPE( void map_regs, (struct port *pp, u32_t base)        );
  56 FORWARD _PROTOTYPE( void do_int, (struct port *pp)                      );
  57 FORWARD _PROTOTYPE( void do_outb, (port_t port, u8_t value)             );
  58 FORWARD _PROTOTYPE( u8_t do_inb, (port_t port)                          );
  59
  60 /* SEF functions and variables. */
  61 FORWARD _PROTOTYPE( void sef_local_startup, (void) );
  62 FORWARD _PROTOTYPE( int sef_cb_init_fresh, (int type, sef_init_info_t *info) );
  63 EXTERN int env_argc;
  64 EXTERN char **env_argv;
  65
  66 /*===========================================================================*
  67  *                              main                                         *
  68  *===========================================================================*/
  69 int main(int argc, char *argv[])
  70 {
  71         int r;
  72         message m;
  73         int ipc_status;
  74
  75         /* SEF local startup. */
  76         env_setargs(argc, argv);
  77         sef_local_startup();
  78
  79         for (;;)
  80         {
  81                 r= driver_receive(ANY, &m, &ipc_status);
  82                 if (r != OK)
  83                         panic("driver_receive failed: %d", r);
  84                 printf("ti1225: got message %u from %d\n",
  85                         m.m_type, m.m_source);
  86         }
  87         return 0;
  88 }
  89
  90 /*===========================================================================*
  91  *                             sef_local_startup                             *
  92  *===========================================================================*/
  93 PRIVATE void sef_local_startup()
  94 {
  95   /* Register init callbacks. */
  96   sef_setcb_init_fresh(sef_cb_init_fresh);
  97   sef_setcb_init_lu(sef_cb_init_fresh);
  98   sef_setcb_init_restart(sef_cb_init_fresh);
  99
 100   /* Register live update callbacks. */
 101   sef_setcb_lu_prepare(sef_cb_lu_prepare_always_ready);
 102   sef_setcb_lu_state_isvalid(sef_cb_lu_state_isvalid_standard);
 103
 104   /* Let SEF perform startup. */
 105   sef_startup();
 106 }
 107
 108 /*===========================================================================*
 109  *                          sef_cb_init_fresh                                *
 110  *===========================================================================*/
 111 PRIVATE int sef_cb_init_fresh(int type, sef_init_info_t *info)
 112 {
 113 /* Initialize the ti1225 driver. */
 114         int c, i, r, first, devind, port;
 115         u16_t vid, did;
 116
 117         (progname=strrchr(env_argv[0],'/')) ? progname++
 118                 : (progname=env_argv[0]);
 119
 120         if((r=tsc_calibrate()) != OK)
 121                 panic("tsc_calibrate failed: %d", r);
 122
 123         debug= 0;
 124         while (c= getopt(env_argc, env_argv, "d?"), c != -1)
 125         {
 126                 switch(c)
 127                 {
 128                 case '?': panic("Usage: ti1225 [-d]");
 129                 case 'd': debug++; break;
 130                 default: panic("getopt failed");
 131                 }
 132         }
 133
 134         pci_init1(progname);
 135
 136         first= 1;
 137         port= 0;
 138         for (;;)
 139         {
 140                 if (first)
 141                 {
 142                         first= 0;
 143                         r= pci_first_dev(&devind, &vid, &did);
 144                 }
 145                 else
 146                         r= pci_next_dev(&devind, &vid, &did);
 147                 if (r != 1)
 148                         break;
 149
 150                 for (i= 0; pcitab_ti[i].vid != 0; i++)
 151                 {
 152                         if (pcitab_ti[i].vid != vid)
 153                                 continue;
 154                         if (pcitab_ti[i].did != did)
 155                                 continue;
 156                         if (pcitab_ti[i].checkclass) {
 157                                 panic("fxp_probe: class check not implemented");
 158                         }
 159                         break;
 160                 }
 161                 if (pcitab_ti[i].vid == 0)
 162                         continue;
 163
 164                 pci_reserve(devind);
 165
 166                 if (debug)
 167                         printf("ti1225: found device %04x/%04x\n", vid, did);
 168                 ports[port].p_devind= devind;
 169                 ports[port].p_flags |= PF_PRESENT;
 170                 port++;
 171                 if (port >= NR_PORTS)
 172                         break;
 173         }
 174
 175         for (i= 0; i<NR_PORTS; i++)
 176         {
 177                 if (!(ports[i].p_flags & PF_PRESENT))
 178                         continue;
 179                 hw_init(&ports[i]);
 180         }
 181
 182         /* Announce we are up! */
 183         driver_announce();
 184
 185         return(OK);
 186 }
 187
 188 PRIVATE void hw_init(struct port *pp)
 189 {
 190         int r, devind, irq;
 191         u8_t v8;
 192         u16_t v16;
 193         u32_t v32;
 194
 195         devind= pp->p_devind;
 196         if (debug)
 197                 printf("hw_init: devind = %d\n", devind);
 198
 199         if (debug)
 200         {
 201                 v16= pci_attr_r16(devind, PCI_CR);
 202                 printf("ti1225: command register 0x%x\n", v16);
 203         }
 204
 205         v32= pci_attr_r32(devind, TI_CB_BASEADDR);
 206         if (debug)
 207                 printf("ti1225: Cardbus/ExCA base address 0x%x\n", v32);
 208         map_regs(pp, v32);
 209         pp->csr_ptr= (struct csr *)pp->base_ptr;
 210
 211         if (debug)
 212         {
 213                 v8= pci_attr_r8(devind, TI_PCI_BUS_NR);
 214                 printf("ti1225: PCI bus number %d\n", v8);
 215         }
 216         v8= pci_attr_r8(devind, TI_CB_BUS_NR);
 217         pp->p_cb_busnr= v8;
 218         if (debug)
 219         {
 220                 printf("ti1225: CardBus bus number %d\n", v8);
 221                 v8= pci_attr_r8(devind, TI_SO_BUS_NR);
 222                 printf("ti1225: Subordinate bus number %d\n", v8);
 223         }
 224
 225 #if USE_INTS
 226         irq= pci_attr_r8(devind, PCI_ILR);
 227         pp->p_irq= irq;
 228         printf("ti1225 using IRQ %d\n", irq);
 229 #endif
 230
 231         v32= pci_attr_r32(devind, TI_LEGACY_BA);
 232         v32 &= ~1;
 233         if (debug)
 234         {
 235                 printf("ti1225: PC Card 16-bit legacy-mode base address 0x%x\n",
 236                         v32);
 237         }
 238
 239         if (v32 == 0)
 240                 panic("bad legacy-mode base address: %d", v32);
 241         pp->p_exca_port= v32;
 242
 243         if (debug)
 244         {
 245                 v32= pci_attr_r32(devind, TI_MF_ROUTE);
 246                 printf("ti1225: Multifunction routing 0x%08x\n", v32);
 247         }
 248
 249 #if USE_INTS
 250         pp->p_hook = pp->p_irq;
 251         r= sys_irqsetpolicy(pp->p_irq, 0, &pp->p_hook);
 252         if (r != OK)
 253                 panic("sys_irqsetpolicy failed: %d", r);
 254 #endif
 255
 256         /* Clear CBB_BC_INTEXCA */
 257         v16= pci_attr_r16(devind, CBB_BRIDGECTRL);
 258         if (debug)
 259                 printf("ti1225: Bridge control 0x%04x\n", v16);
 260         v16 &= ~CBB_BC_INTEXCA;
 261         pci_attr_w16(devind, CBB_BRIDGECTRL, v16);
 262
 263         if (debug)
 264         {
 265                 v32= pci_attr_r32(devind, TI_SYSCTRL);
 266                 printf("ti1225: System Control Register 0x%08x\n", v32);
 267
 268                 v8= pci_attr_r8(devind, TI_CARD_CTRL);
 269                 printf("ti1225: Card Control 0x%02x\n", v8);
 270
 271                 v8= pci_attr_r8(devind, TI_DEV_CTRL);
 272                 printf("ti1225: Device Control 0x%02x\n", v8);
 273         }
 274
 275         /* Enable socket interrupts */
 276         pp->csr_ptr->csr_mask |= CM_PWRMASK | CM_CDMASK | CM_CSTSMASK;
 277
 278         do_int(pp);
 279
 280 #if USE_INTS
 281         r= sys_irqenable(&pp->p_hook);
 282         if (r != OK)
 283                 panic("unable enable interrupts: %d", r);
 284 #endif
 285 }
 286
 287 PRIVATE void map_regs(struct port *pp, u32_t base)
 288 {
 289         int r;
 290         vir_bytes buf_base;
 291
 292         buf_base= (vir_bytes)pp->buffer;
 293         if (buf_base % I386_PAGE_SIZE)
 294                 buf_base += I386_PAGE_SIZE-(buf_base % I386_PAGE_SIZE);
 295         pp->base_ptr= (char *)buf_base;
 296         if (debug)
 297         {
 298                 printf("ti1225: map_regs: using %p for %p\n",
 299                         pp->base_ptr, pp->buffer);
 300         }
 301
 302         /* Clear low order bits in base */
 303         base &= ~(u32_t)0xF;
 304
 305 #if 0
 306         r= sys_vm_map(SELF, 1 /* map */, (vir_bytes)pp->base_ptr,
 307                 I386_PAGE_SIZE, (phys_bytes)base);
 308 #else
 309         r = ENOSYS;
 310 #endif
 311         if (r != OK)
 312                 panic("map_regs: sys_vm_map failed: %d", r);
 313 }
 314
 315 PRIVATE void do_int(struct port *pp)
 316 {
 317         int r, devind, vcc_5v, vcc_3v, vcc_Xv, vcc_Yv,
 318                 socket_5v, socket_3v, socket_Xv, socket_Yv;
 319         clock_t t0, t1;
 320         u32_t csr_event, csr_present, csr_control;
 321         u8_t v8;
 322         u16_t v16;
 323
 324         devind= pp->p_devind;
 325         v8= pci_attr_r8(devind, TI_CARD_CTRL);
 326         if (v8 & TI_CCR_IFG)
 327         {
 328                 printf("ti1225: got functional interrupt\n");
 329                 pci_attr_w8(devind, TI_CARD_CTRL, v8);
 330         }
 331
 332         if (debug)
 333         {
 334                 printf("Socket event: 0x%x\n", pp->csr_ptr->csr_event);
 335                 printf("Socket mask: 0x%x\n", pp->csr_ptr->csr_mask);
 336         }
 337
 338         csr_present= pp->csr_ptr->csr_present;
 339         csr_control= pp->csr_ptr->csr_control;
 340
 341         if ((csr_present & (CP_CDETECT1|CP_CDETECT2)) != 0)
 342         {
 343                 if (debug)
 344                         printf("do_int: no card present\n");
 345                 return;
 346         }
 347         if (csr_present & CP_BADVCCREQ)
 348         {
 349                 printf("do_int: Bad Vcc request\n");
 350                 /* return; */
 351         }
 352         if (csr_present & CP_DATALOST)
 353         {
 354                 /* Do we care? */
 355                 if (debug)
 356                         printf("do_int: Data lost\n");
 357                 /* return; */
 358         }
 359         if (csr_present & CP_NOTACARD)
 360         {
 361                 printf("do_int: Not a card\n");
 362                 return;
 363         }
 364         if (debug)
 365         {
 366                 if (csr_present & CP_CBCARD)
 367                         printf("do_int: Cardbus card detected\n");
 368                 if (csr_present & CP_16BITCARD)
 369                         printf("do_int: 16-bit card detected\n");
 370         }
 371         if (csr_present & CP_PWRCYCLE)
 372         {
 373                 if (debug)
 374                         printf("do_int: powered up\n");
 375                 return;
 376         }
 377         vcc_5v= !!(csr_present & CP_5VCARD);
 378         vcc_3v= !!(csr_present & CP_3VCARD);
 379         vcc_Xv= !!(csr_present & CP_XVCARD);
 380         vcc_Yv= !!(csr_present & CP_YVCARD);
 381         if (debug)
 382         {
 383                 printf("do_int: card supports:%s%s%s%s\n",
 384                         vcc_5v ? " 5V" : "", vcc_3v ? " 3V" : "",
 385                         vcc_Xv ? " X.X V" : "", vcc_Yv ? " Y.Y V" : "");
 386         }
 387         socket_5v= !!(csr_present & CP_5VSOCKET);
 388         socket_3v= !!(csr_present & CP_3VSOCKET);
 389         socket_Xv= !!(csr_present & CP_XVSOCKET);
 390         socket_Yv= !!(csr_present & CP_YVSOCKET);
 391         if (debug)
 392         {
 393                 printf("do_int: socket supports:%s%s%s%s\n",
 394                         socket_5v ? " 5V" : "", socket_3v ? " 3V" : "",
 395                         socket_Xv ? " X.X V" : "", socket_Yv ? " Y.Y V" : "");
 396         }
 397         if (vcc_5v && socket_5v)
 398         {
 399                 csr_control= (csr_control & ~CC_VCCCTRL) | CC_VCC_5V;
 400                 pp->csr_ptr->csr_control= csr_control;
 401                 if (debug)
 402                         printf("do_int: applying 5V\n");
 403         }
 404         else if (vcc_3v && socket_3v)
 405         {
 406                 csr_control= (csr_control & ~CC_VCCCTRL) | CC_VCC_3V;
 407                 pp->csr_ptr->csr_control= csr_control;
 408                 if (debug)
 409                         printf("do_int: applying 3V\n");
 410         }
 411         else if (vcc_Xv && socket_Xv)
 412         {
 413                 csr_control= (csr_control & ~CC_VCCCTRL) | CC_VCC_XV;
 414                 pp->csr_ptr->csr_control= csr_control;
 415                 printf("do_int: applying X.X V\n");
 416         }
 417         else if (vcc_Yv && socket_Yv)
 418         {
 419                 csr_control= (csr_control & ~CC_VCCCTRL) | CC_VCC_YV;
 420                 pp->csr_ptr->csr_control= csr_control;
 421                 printf("do_int: applying Y.Y V\n");
 422         }
 423         else
 424         {
 425                 printf("do_int: socket and card are not compatible\n");
 426                 return;
 427         }
 428
 429         csr_event= pp->csr_ptr->csr_event;
 430         if (csr_event)
 431         {
 432                 if (debug)
 433                         printf("clearing socket event\n");
 434                 pp->csr_ptr->csr_event= csr_event;
 435                 if (debug)
 436                 {
 437                         printf("Socket event (cleared): 0x%x\n",
 438                                 pp->csr_ptr->csr_event);
 439                 }
 440         }
 441
 442         devind= pp->p_devind;
 443         v8= pci_attr_r8(devind, TI_CARD_CTRL);
 444         if (v8 & TI_CCR_IFG)
 445         {
 446                 printf("ti1225: got functional interrupt\n");
 447                 pci_attr_w8(devind, TI_CARD_CTRL, v8);
 448         }
 449
 450         if (debug)
 451         {
 452                 v8= pci_attr_r8(devind, TI_CARD_CTRL);
 453                 printf("TI_CARD_CTRL: 0x%02x\n", v8);
 454         }
 455
 456         getuptime(&t0);
 457         do {
 458                 csr_present= pp->csr_ptr->csr_present;
 459                 if (csr_present & CP_PWRCYCLE)
 460                         break;
 461         } while (getuptime(&t1)==OK && (t1-t0) < micros_to_ticks(100000));
 462
 463         if (!(csr_present & CP_PWRCYCLE))
 464         {
 465                 printf("do_int: not powered up?\n");
 466                 return;
 467         }
 468
 469         /* Reset device */
 470         v16= pci_attr_r16(devind, CBB_BRIDGECTRL);
 471         v16 |= CBB_BC_CRST;
 472         pci_attr_w16(devind, CBB_BRIDGECTRL, v16);
 473
 474         /* Wait one microsecond. Is this correct? What are the specs? */
 475         micro_delay(1);
 476
 477         /* Clear CBB_BC_CRST */
 478         v16= pci_attr_r16(devind, CBB_BRIDGECTRL);
 479         v16 &= ~CBB_BC_CRST;
 480         pci_attr_w16(devind, CBB_BRIDGECTRL, v16);
 481
 482         /* Wait one microsecond after clearing the reset line. Is this
 483          * correct? What are the specs?
 484          */
 485         micro_delay(1);
 486
 487         pci_rescan_bus(pp->p_cb_busnr);
 488
 489 #if USE_INTS
 490         r= sys_irqenable(&pp->p_hook);
 491         if (r != OK)
 492                 panic("unable enable interrupts: %d", r);
 493 #endif
 494
 495 }
 496
 497
 498 PRIVATE u8_t do_inb(port_t port)
 499 {
 500         int r;
 501         u32_t value;
 502
 503         r= sys_inb(port, &value);
 504         if (r != OK)
 505                 panic("sys_inb failed: %d", r);
 506         return value;
 507 }
 508
 509 PRIVATE void do_outb(port_t port, u8_t value)
 510 {
 511         int r;
 512
 513         r= sys_outb(port, value);
 514         if (r != OK)
 515                 panic("sys_outb failed: %d", r);
 516 }
 517
 518