linux/drivers/pcmcia/yenta_socket.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Regular cardbus driver ("yenta_socket")
   4 *
   5 * (C) Copyright 1999, 2000 Linus Torvalds
   6 *
   7 * Changelog:
   8 * Aug 2002: Manfred Spraul <manfred@colorfullife.com>
   9 *      Dynamically adjust the size of the bridge resource
  10 *
  11 * May 2003: Dominik Brodowski <linux@brodo.de>
  12 *      Merge pci_socket.c and yenta.c into one file
  13 */
  14#include <linux/init.h>
  15#include <linux/pci.h>
  16#include <linux/workqueue.h>
  17#include <linux/interrupt.h>
  18#include <linux/delay.h>
  19#include <linux/module.h>
  20#include <linux/io.h>
  21#include <linux/slab.h>
  22
  23#include <pcmcia/ss.h>
  24
  25#include "yenta_socket.h"
  26#include "i82365.h"
  27
  28static bool disable_clkrun;
  29module_param(disable_clkrun, bool, 0444);
  30MODULE_PARM_DESC(disable_clkrun,
  31                 "If PC card doesn't function properly, please try this option (TI and Ricoh bridges only)");
  32
  33static bool isa_probe = 1;
  34module_param(isa_probe, bool, 0444);
  35MODULE_PARM_DESC(isa_probe, "If set ISA interrupts are probed (default). Set to N to disable probing");
  36
  37static bool pwr_irqs_off;
  38module_param(pwr_irqs_off, bool, 0644);
  39MODULE_PARM_DESC(pwr_irqs_off, "Force IRQs off during power-on of slot. Use only when seeing IRQ storms!");
  40
  41static char o2_speedup[] = "default";
  42module_param_string(o2_speedup, o2_speedup, sizeof(o2_speedup), 0444);
  43MODULE_PARM_DESC(o2_speedup, "Use prefetch/burst for O2-bridges: 'on', 'off' "
  44        "or 'default' (uses recommended behaviour for the detected bridge)");
  45
  46/*
  47 * Only probe "regular" interrupts, don't
  48 * touch dangerous spots like the mouse irq,
  49 * because there are mice that apparently
  50 * get really confused if they get fondled
  51 * too intimately.
  52 *
  53 * Default to 11, 10, 9, 7, 6, 5, 4, 3.
  54 */
  55static u32 isa_interrupts = 0x0ef8;
  56
  57
  58#define debug(x, s, args...) dev_dbg(&s->dev->dev, x, ##args)
  59
  60/* Don't ask.. */
  61#define to_cycles(ns)   ((ns)/120)
  62#define to_ns(cycles)   ((cycles)*120)
  63
  64/*
  65 * yenta PCI irq probing.
  66 * currently only used in the TI/EnE initialization code
  67 */
  68#ifdef CONFIG_YENTA_TI
  69static int yenta_probe_cb_irq(struct yenta_socket *socket);
  70static unsigned int yenta_probe_irq(struct yenta_socket *socket,
  71                                u32 isa_irq_mask);
  72#endif
  73
  74
  75static unsigned int override_bios;
  76module_param(override_bios, uint, 0000);
  77MODULE_PARM_DESC(override_bios, "yenta ignore bios resource allocation");
  78
  79/*
  80 * Generate easy-to-use ways of reading a cardbus sockets
  81 * regular memory space ("cb_xxx"), configuration space
  82 * ("config_xxx") and compatibility space ("exca_xxxx")
  83 */
  84static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg)
  85{
  86        u32 val = readl(socket->base + reg);
  87        debug("%04x %08x\n", socket, reg, val);
  88        return val;
  89}
  90
  91static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val)
  92{
  93        debug("%04x %08x\n", socket, reg, val);
  94        writel(val, socket->base + reg);
  95        readl(socket->base + reg); /* avoid problems with PCI write posting */
  96}
  97
  98static inline u8 config_readb(struct yenta_socket *socket, unsigned offset)
  99{
 100        u8 val;
 101        pci_read_config_byte(socket->dev, offset, &val);
 102        debug("%04x %02x\n", socket, offset, val);
 103        return val;
 104}
 105
 106static inline u16 config_readw(struct yenta_socket *socket, unsigned offset)
 107{
 108        u16 val;
 109        pci_read_config_word(socket->dev, offset, &val);
 110        debug("%04x %04x\n", socket, offset, val);
 111        return val;
 112}
 113
 114static inline u32 config_readl(struct yenta_socket *socket, unsigned offset)
 115{
 116        u32 val;
 117        pci_read_config_dword(socket->dev, offset, &val);
 118        debug("%04x %08x\n", socket, offset, val);
 119        return val;
 120}
 121
 122static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val)
 123{
 124        debug("%04x %02x\n", socket, offset, val);
 125        pci_write_config_byte(socket->dev, offset, val);
 126}
 127
 128static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val)
 129{
 130        debug("%04x %04x\n", socket, offset, val);
 131        pci_write_config_word(socket->dev, offset, val);
 132}
 133
 134static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val)
 135{
 136        debug("%04x %08x\n", socket, offset, val);
 137        pci_write_config_dword(socket->dev, offset, val);
 138}
 139
 140static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg)
 141{
 142        u8 val = readb(socket->base + 0x800 + reg);
 143        debug("%04x %02x\n", socket, reg, val);
 144        return val;
 145}
 146
 147static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg)
 148{
 149        u16 val;
 150        val = readb(socket->base + 0x800 + reg);
 151        val |= readb(socket->base + 0x800 + reg + 1) << 8;
 152        debug("%04x %04x\n", socket, reg, val);
 153        return val;
 154}
 155
 156static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val)
 157{
 158        debug("%04x %02x\n", socket, reg, val);
 159        writeb(val, socket->base + 0x800 + reg);
 160        readb(socket->base + 0x800 + reg); /* PCI write posting... */
 161}
 162
 163static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val)
 164{
 165        debug("%04x %04x\n", socket, reg, val);
 166        writeb(val, socket->base + 0x800 + reg);
 167        writeb(val >> 8, socket->base + 0x800 + reg + 1);
 168
 169        /* PCI write posting... */
 170        readb(socket->base + 0x800 + reg);
 171        readb(socket->base + 0x800 + reg + 1);
 172}
 173
 174static ssize_t show_yenta_registers(struct device *yentadev, struct device_attribute *attr, char *buf)
 175{
 176        struct yenta_socket *socket = dev_get_drvdata(yentadev);
 177        int offset = 0, i;
 178
 179        offset = snprintf(buf, PAGE_SIZE, "CB registers:");
 180        for (i = 0; i < 0x24; i += 4) {
 181                unsigned val;
 182                if (!(i & 15))
 183                        offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
 184                val = cb_readl(socket, i);
 185                offset += snprintf(buf + offset, PAGE_SIZE - offset, " %08x", val);
 186        }
 187
 188        offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n\nExCA registers:");
 189        for (i = 0; i < 0x45; i++) {
 190                unsigned char val;
 191                if (!(i & 7)) {
 192                        if (i & 8) {
 193                                memcpy(buf + offset, " -", 2);
 194                                offset += 2;
 195                        } else
 196                                offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
 197                }
 198                val = exca_readb(socket, i);
 199                offset += snprintf(buf + offset, PAGE_SIZE - offset, " %02x", val);
 200        }
 201        buf[offset++] = '\n';
 202        return offset;
 203}
 204
 205static DEVICE_ATTR(yenta_registers, S_IRUSR, show_yenta_registers, NULL);
 206
 207/*
 208 * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend
 209 * on what kind of card is inserted..
 210 */
 211static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value)
 212{
 213        struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 214        unsigned int val;
 215        u32 state = cb_readl(socket, CB_SOCKET_STATE);
 216
 217        val  = (state & CB_3VCARD) ? SS_3VCARD : 0;
 218        val |= (state & CB_XVCARD) ? SS_XVCARD : 0;
 219        val |= (state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING;
 220        val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? SS_PENDING : 0;
 221
 222
 223        if (state & CB_CBCARD) {
 224                val |= SS_CARDBUS;
 225                val |= (state & CB_CARDSTS) ? SS_STSCHG : 0;
 226                val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT;
 227                val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0;
 228        } else if (state & CB_16BITCARD) {
 229                u8 status = exca_readb(socket, I365_STATUS);
 230                val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0;
 231                if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
 232                        val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG;
 233                } else {
 234                        val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD;
 235                        val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN;
 236                }
 237                val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0;
 238                val |= (status & I365_CS_READY) ? SS_READY : 0;
 239                val |= (status & I365_CS_POWERON) ? SS_POWERON : 0;
 240        }
 241
 242        *value = val;
 243        return 0;
 244}
 245
 246static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state)
 247{
 248        /* some birdges require to use the ExCA registers to power 16bit cards */
 249        if (!(cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) &&
 250            (socket->flags & YENTA_16BIT_POWER_EXCA)) {
 251                u8 reg, old;
 252                reg = old = exca_readb(socket, I365_POWER);
 253                reg &= ~(I365_VCC_MASK | I365_VPP1_MASK | I365_VPP2_MASK);
 254
 255                /* i82365SL-DF style */
 256                if (socket->flags & YENTA_16BIT_POWER_DF) {
 257                        switch (state->Vcc) {
 258                        case 33:
 259                                reg |= I365_VCC_3V;
 260                                break;
 261                        case 50:
 262                                reg |= I365_VCC_5V;
 263                                break;
 264                        default:
 265                                reg = 0;
 266                                break;
 267                        }
 268                        switch (state->Vpp) {
 269                        case 33:
 270                        case 50:
 271                                reg |= I365_VPP1_5V;
 272                                break;
 273                        case 120:
 274                                reg |= I365_VPP1_12V;
 275                                break;
 276                        }
 277                } else {
 278                        /* i82365SL-B style */
 279                        switch (state->Vcc) {
 280                        case 50:
 281                                reg |= I365_VCC_5V;
 282                                break;
 283                        default:
 284                                reg = 0;
 285                                break;
 286                        }
 287                        switch (state->Vpp) {
 288                        case 50:
 289                                reg |= I365_VPP1_5V | I365_VPP2_5V;
 290                                break;
 291                        case 120:
 292                                reg |= I365_VPP1_12V | I365_VPP2_12V;
 293                                break;
 294                        }
 295                }
 296
 297                if (reg != old)
 298                        exca_writeb(socket, I365_POWER, reg);
 299        } else {
 300                u32 reg = 0;    /* CB_SC_STPCLK? */
 301                switch (state->Vcc) {
 302                case 33:
 303                        reg = CB_SC_VCC_3V;
 304                        break;
 305                case 50:
 306                        reg = CB_SC_VCC_5V;
 307                        break;
 308                default:
 309                        reg = 0;
 310                        break;
 311                }
 312                switch (state->Vpp) {
 313                case 33:
 314                        reg |= CB_SC_VPP_3V;
 315                        break;
 316                case 50:
 317                        reg |= CB_SC_VPP_5V;
 318                        break;
 319                case 120:
 320                        reg |= CB_SC_VPP_12V;
 321                        break;
 322                }
 323                if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
 324                        cb_writel(socket, CB_SOCKET_CONTROL, reg);
 325        }
 326}
 327
 328static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
 329{
 330        struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 331        u16 bridge;
 332
 333        /* if powering down: do it immediately */
 334        if (state->Vcc == 0)
 335                yenta_set_power(socket, state);
 336
 337        socket->io_irq = state->io_irq;
 338        bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR);
 339        if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
 340                u8 intr;
 341                bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0;
 342
 343                /* ISA interrupt control? */
 344                intr = exca_readb(socket, I365_INTCTL);
 345                intr = (intr & ~0xf);
 346                if (!socket->dev->irq) {
 347                        intr |= socket->cb_irq ? socket->cb_irq : state->io_irq;
 348                        bridge |= CB_BRIDGE_INTR;
 349                }
 350                exca_writeb(socket, I365_INTCTL, intr);
 351        }  else {
 352                u8 reg;
 353
 354                reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA);
 355                reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET;
 356                reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0;
 357                if (state->io_irq != socket->dev->irq) {
 358                        reg |= state->io_irq;
 359                        bridge |= CB_BRIDGE_INTR;
 360                }
 361                exca_writeb(socket, I365_INTCTL, reg);
 362
 363                reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK);
 364                reg |= I365_PWR_NORESET;
 365                if (state->flags & SS_PWR_AUTO)
 366                        reg |= I365_PWR_AUTO;
 367                if (state->flags & SS_OUTPUT_ENA)
 368                        reg |= I365_PWR_OUT;
 369                if (exca_readb(socket, I365_POWER) != reg)
 370                        exca_writeb(socket, I365_POWER, reg);
 371
 372                /* CSC interrupt: no ISA irq for CSC */
 373                reg = exca_readb(socket, I365_CSCINT);
 374                reg &= I365_CSC_IRQ_MASK;
 375                reg |= I365_CSC_DETECT;
 376                if (state->flags & SS_IOCARD) {
 377                        if (state->csc_mask & SS_STSCHG)
 378                                reg |= I365_CSC_STSCHG;
 379                } else {
 380                        if (state->csc_mask & SS_BATDEAD)
 381                                reg |= I365_CSC_BVD1;
 382                        if (state->csc_mask & SS_BATWARN)
 383                                reg |= I365_CSC_BVD2;
 384                        if (state->csc_mask & SS_READY)
 385                                reg |= I365_CSC_READY;
 386                }
 387                exca_writeb(socket, I365_CSCINT, reg);
 388                exca_readb(socket, I365_CSC);
 389                if (sock->zoom_video)
 390                        sock->zoom_video(sock, state->flags & SS_ZVCARD);
 391        }
 392        config_writew(socket, CB_BRIDGE_CONTROL, bridge);
 393        /* Socket event mask: get card insert/remove events.. */
 394        cb_writel(socket, CB_SOCKET_EVENT, -1);
 395        cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
 396
 397        /* if powering up: do it as the last step when the socket is configured */
 398        if (state->Vcc != 0)
 399                yenta_set_power(socket, state);
 400        return 0;
 401}
 402
 403static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
 404{
 405        struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 406        int map;
 407        unsigned char ioctl, addr, enable;
 408
 409        map = io->map;
 410
 411        if (map > 1)
 412                return -EINVAL;
 413
 414        enable = I365_ENA_IO(map);
 415        addr = exca_readb(socket, I365_ADDRWIN);
 416
 417        /* Disable the window before changing it.. */
 418        if (addr & enable) {
 419                addr &= ~enable;
 420                exca_writeb(socket, I365_ADDRWIN, addr);
 421        }
 422
 423        exca_writew(socket, I365_IO(map)+I365_W_START, io->start);
 424        exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop);
 425
 426        ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
 427        if (io->flags & MAP_0WS)
 428                ioctl |= I365_IOCTL_0WS(map);
 429        if (io->flags & MAP_16BIT)
 430                ioctl |= I365_IOCTL_16BIT(map);
 431        if (io->flags & MAP_AUTOSZ)
 432                ioctl |= I365_IOCTL_IOCS16(map);
 433        exca_writeb(socket, I365_IOCTL, ioctl);
 434
 435        if (io->flags & MAP_ACTIVE)
 436                exca_writeb(socket, I365_ADDRWIN, addr | enable);
 437        return 0;
 438}
 439
 440static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
 441{
 442        struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 443        struct pci_bus_region region;
 444        int map;
 445        unsigned char addr, enable;
 446        unsigned int start, stop, card_start;
 447        unsigned short word;
 448
 449        pcibios_resource_to_bus(socket->dev->bus, &region, mem->res);
 450
 451        map = mem->map;
 452        start = region.start;
 453        stop = region.end;
 454        card_start = mem->card_start;
 455
 456        if (map > 4 || start > stop || ((start ^ stop) >> 24) ||
 457            (card_start >> 26) || mem->speed > 1000)
 458                return -EINVAL;
 459
 460        enable = I365_ENA_MEM(map);
 461        addr = exca_readb(socket, I365_ADDRWIN);
 462        if (addr & enable) {
 463                addr &= ~enable;
 464                exca_writeb(socket, I365_ADDRWIN, addr);
 465        }
 466
 467        exca_writeb(socket, CB_MEM_PAGE(map), start >> 24);
 468
 469        word = (start >> 12) & 0x0fff;
 470        if (mem->flags & MAP_16BIT)
 471                word |= I365_MEM_16BIT;
 472        if (mem->flags & MAP_0WS)
 473                word |= I365_MEM_0WS;
 474        exca_writew(socket, I365_MEM(map) + I365_W_START, word);
 475
 476        word = (stop >> 12) & 0x0fff;
 477        switch (to_cycles(mem->speed)) {
 478        case 0:
 479                break;
 480        case 1:
 481                word |= I365_MEM_WS0;
 482                break;
 483        case 2:
 484                word |= I365_MEM_WS1;
 485                break;
 486        default:
 487                word |= I365_MEM_WS1 | I365_MEM_WS0;
 488                break;
 489        }
 490        exca_writew(socket, I365_MEM(map) + I365_W_STOP, word);
 491
 492        word = ((card_start - start) >> 12) & 0x3fff;
 493        if (mem->flags & MAP_WRPROT)
 494                word |= I365_MEM_WRPROT;
 495        if (mem->flags & MAP_ATTRIB)
 496                word |= I365_MEM_REG;
 497        exca_writew(socket, I365_MEM(map) + I365_W_OFF, word);
 498
 499        if (mem->flags & MAP_ACTIVE)
 500                exca_writeb(socket, I365_ADDRWIN, addr | enable);
 501        return 0;
 502}
 503
 504
 505
 506static irqreturn_t yenta_interrupt(int irq, void *dev_id)
 507{
 508        unsigned int events;
 509        struct yenta_socket *socket = (struct yenta_socket *) dev_id;
 510        u8 csc;
 511        u32 cb_event;
 512
 513        /* Clear interrupt status for the event */
 514        cb_event = cb_readl(socket, CB_SOCKET_EVENT);
 515        cb_writel(socket, CB_SOCKET_EVENT, cb_event);
 516
 517        csc = exca_readb(socket, I365_CSC);
 518
 519        if (!(cb_event || csc))
 520                return IRQ_NONE;
 521
 522        events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ;
 523        events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0;
 524        if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
 525                events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
 526        } else {
 527                events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
 528                events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
 529                events |= (csc & I365_CSC_READY) ? SS_READY : 0;
 530        }
 531
 532        if (events)
 533                pcmcia_parse_events(&socket->socket, events);
 534
 535        return IRQ_HANDLED;
 536}
 537
 538static void yenta_interrupt_wrapper(struct timer_list *t)
 539{
 540        struct yenta_socket *socket = from_timer(socket, t, poll_timer);
 541
 542        yenta_interrupt(0, (void *)socket);
 543        socket->poll_timer.expires = jiffies + HZ;
 544        add_timer(&socket->poll_timer);
 545}
 546
 547static void yenta_clear_maps(struct yenta_socket *socket)
 548{
 549        int i;
 550        struct resource res = { .start = 0, .end = 0x0fff };
 551        pccard_io_map io = { 0, 0, 0, 0, 1 };
 552        pccard_mem_map mem = { .res = &res, };
 553
 554        yenta_set_socket(&socket->socket, &dead_socket);
 555        for (i = 0; i < 2; i++) {
 556                io.map = i;
 557                yenta_set_io_map(&socket->socket, &io);
 558        }
 559        for (i = 0; i < 5; i++) {
 560                mem.map = i;
 561                yenta_set_mem_map(&socket->socket, &mem);
 562        }
 563}
 564
 565/* redoes voltage interrogation if required */
 566static void yenta_interrogate(struct yenta_socket *socket)
 567{
 568        u32 state;
 569
 570        state = cb_readl(socket, CB_SOCKET_STATE);
 571        if (!(state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ||
 572            (state & (CB_CDETECT1 | CB_CDETECT2 | CB_NOTACARD | CB_BADVCCREQ)) ||
 573            ((state & (CB_16BITCARD | CB_CBCARD)) == (CB_16BITCARD | CB_CBCARD)))
 574                cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST);
 575}
 576
 577/* Called at resume and initialization events */
 578static int yenta_sock_init(struct pcmcia_socket *sock)
 579{
 580        struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 581
 582        exca_writeb(socket, I365_GBLCTL, 0x00);
 583        exca_writeb(socket, I365_GENCTL, 0x00);
 584
 585        /* Redo card voltage interrogation */
 586        yenta_interrogate(socket);
 587
 588        yenta_clear_maps(socket);
 589
 590        if (socket->type && socket->type->sock_init)
 591                socket->type->sock_init(socket);
 592
 593        /* Re-enable CSC interrupts */
 594        cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
 595
 596        return 0;
 597}
 598
 599static int yenta_sock_suspend(struct pcmcia_socket *sock)
 600{
 601        struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 602
 603        /* Disable CSC interrupts */
 604        cb_writel(socket, CB_SOCKET_MASK, 0x0);
 605
 606        return 0;
 607}
 608
 609/*
 610 * Use an adaptive allocation for the memory resource,
 611 * sometimes the memory behind pci bridges is limited:
 612 * 1/8 of the size of the io window of the parent.
 613 * max 4 MB, min 16 kB. We try very hard to not get below
 614 * the "ACC" values, though.
 615 */
 616#define BRIDGE_MEM_MAX (4*1024*1024)
 617#define BRIDGE_MEM_ACC (128*1024)
 618#define BRIDGE_MEM_MIN (16*1024)
 619
 620#define BRIDGE_IO_MAX 512
 621#define BRIDGE_IO_ACC 256
 622#define BRIDGE_IO_MIN 32
 623
 624#ifndef PCIBIOS_MIN_CARDBUS_IO
 625#define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO
 626#endif
 627
 628static int yenta_search_one_res(struct resource *root, struct resource *res,
 629                                u32 min)
 630{
 631        u32 align, size, start, end;
 632
 633        if (res->flags & IORESOURCE_IO) {
 634                align = 1024;
 635                size = BRIDGE_IO_MAX;
 636                start = PCIBIOS_MIN_CARDBUS_IO;
 637                end = ~0U;
 638        } else {
 639                unsigned long avail = root->end - root->start;
 640                int i;
 641                size = BRIDGE_MEM_MAX;
 642                if (size > avail/8) {
 643                        size = (avail+1)/8;
 644                        /* round size down to next power of 2 */
 645                        i = 0;
 646                        while ((size /= 2) != 0)
 647                                i++;
 648                        size = 1 << i;
 649                }
 650                if (size < min)
 651                        size = min;
 652                align = size;
 653                start = PCIBIOS_MIN_MEM;
 654                end = ~0U;
 655        }
 656
 657        do {
 658                if (allocate_resource(root, res, size, start, end, align,
 659                                      NULL, NULL) == 0) {
 660                        return 1;
 661                }
 662                size = size/2;
 663                align = size;
 664        } while (size >= min);
 665
 666        return 0;
 667}
 668
 669
 670static int yenta_search_res(struct yenta_socket *socket, struct resource *res,
 671                            u32 min)
 672{
 673        struct resource *root;
 674        int i;
 675
 676        pci_bus_for_each_resource(socket->dev->bus, root, i) {
 677                if (!root)
 678                        continue;
 679
 680                if ((res->flags ^ root->flags) &
 681                    (IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH))
 682                        continue; /* Wrong type */
 683
 684                if (yenta_search_one_res(root, res, min))
 685                        return 1;
 686        }
 687        return 0;
 688}
 689
 690static int yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type, int addr_start, int addr_end)
 691{
 692        struct pci_dev *dev = socket->dev;
 693        struct resource *res;
 694        struct pci_bus_region region;
 695        unsigned mask;
 696
 697        res = dev->resource + PCI_BRIDGE_RESOURCES + nr;
 698        /* Already allocated? */
 699        if (res->parent)
 700                return 0;
 701
 702        /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
 703        mask = ~0xfff;
 704        if (type & IORESOURCE_IO)
 705                mask = ~3;
 706
 707        res->name = dev->subordinate->name;
 708        res->flags = type;
 709
 710        region.start = config_readl(socket, addr_start) & mask;
 711        region.end = config_readl(socket, addr_end) | ~mask;
 712        if (region.start && region.end > region.start && !override_bios) {
 713                pcibios_bus_to_resource(dev->bus, res, &region);
 714                if (pci_claim_resource(dev, PCI_BRIDGE_RESOURCES + nr) == 0)
 715                        return 0;
 716                dev_info(&dev->dev,
 717                         "Preassigned resource %d busy or not available, reconfiguring...\n",
 718                         nr);
 719        }
 720
 721        if (type & IORESOURCE_IO) {
 722                if ((yenta_search_res(socket, res, BRIDGE_IO_MAX)) ||
 723                    (yenta_search_res(socket, res, BRIDGE_IO_ACC)) ||
 724                    (yenta_search_res(socket, res, BRIDGE_IO_MIN)))
 725                        return 1;
 726        } else {
 727                if (type & IORESOURCE_PREFETCH) {
 728                        if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
 729                            (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
 730                            (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
 731                                return 1;
 732                        /* Approximating prefetchable by non-prefetchable */
 733                        res->flags = IORESOURCE_MEM;
 734                }
 735                if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
 736                    (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
 737                    (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
 738                        return 1;
 739        }
 740
 741        dev_info(&dev->dev,
 742                 "no resource of type %x available, trying to continue...\n",
 743                 type);
 744        res->start = res->end = res->flags = 0;
 745        return 0;
 746}
 747
 748/*
 749 * Allocate the bridge mappings for the device..
 750 */
 751static void yenta_allocate_resources(struct yenta_socket *socket)
 752{
 753        int program = 0;
 754        program += yenta_allocate_res(socket, 0, IORESOURCE_IO,
 755                           PCI_CB_IO_BASE_0, PCI_CB_IO_LIMIT_0);
 756        program += yenta_allocate_res(socket, 1, IORESOURCE_IO,
 757                           PCI_CB_IO_BASE_1, PCI_CB_IO_LIMIT_1);
 758        program += yenta_allocate_res(socket, 2, IORESOURCE_MEM|IORESOURCE_PREFETCH,
 759                           PCI_CB_MEMORY_BASE_0, PCI_CB_MEMORY_LIMIT_0);
 760        program += yenta_allocate_res(socket, 3, IORESOURCE_MEM,
 761                           PCI_CB_MEMORY_BASE_1, PCI_CB_MEMORY_LIMIT_1);
 762        if (program)
 763                pci_setup_cardbus(socket->dev->subordinate);
 764}
 765
 766
 767/*
 768 * Free the bridge mappings for the device..
 769 */
 770static void yenta_free_resources(struct yenta_socket *socket)
 771{
 772        int i;
 773        for (i = 0; i < 4; i++) {
 774                struct resource *res;
 775                res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i;
 776                if (res->start != 0 && res->end != 0)
 777                        release_resource(res);
 778                res->start = res->end = res->flags = 0;
 779        }
 780}
 781
 782
 783/*
 784 * Close it down - release our resources and go home..
 785 */
 786static void yenta_close(struct pci_dev *dev)
 787{
 788        struct yenta_socket *sock = pci_get_drvdata(dev);
 789
 790        /* Remove the register attributes */
 791        device_remove_file(&dev->dev, &dev_attr_yenta_registers);
 792
 793        /* we don't want a dying socket registered */
 794        pcmcia_unregister_socket(&sock->socket);
 795
 796        /* Disable all events so we don't die in an IRQ storm */
 797        cb_writel(sock, CB_SOCKET_MASK, 0x0);
 798        exca_writeb(sock, I365_CSCINT, 0);
 799
 800        if (sock->cb_irq)
 801                free_irq(sock->cb_irq, sock);
 802        else
 803                del_timer_sync(&sock->poll_timer);
 804
 805        iounmap(sock->base);
 806        yenta_free_resources(sock);
 807
 808        pci_release_regions(dev);
 809        pci_disable_device(dev);
 810        pci_set_drvdata(dev, NULL);
 811        kfree(sock);
 812}
 813
 814
 815static struct pccard_operations yenta_socket_operations = {
 816        .init                   = yenta_sock_init,
 817        .suspend                = yenta_sock_suspend,
 818        .get_status             = yenta_get_status,
 819        .set_socket             = yenta_set_socket,
 820        .set_io_map             = yenta_set_io_map,
 821        .set_mem_map            = yenta_set_mem_map,
 822};
 823
 824
 825#ifdef CONFIG_YENTA_TI
 826#include "ti113x.h"
 827#endif
 828#ifdef CONFIG_YENTA_RICOH
 829#include "ricoh.h"
 830#endif
 831#ifdef CONFIG_YENTA_TOSHIBA
 832#include "topic.h"
 833#endif
 834#ifdef CONFIG_YENTA_O2
 835#include "o2micro.h"
 836#endif
 837
 838enum {
 839        CARDBUS_TYPE_DEFAULT = -1,
 840        CARDBUS_TYPE_TI,
 841        CARDBUS_TYPE_TI113X,
 842        CARDBUS_TYPE_TI12XX,
 843        CARDBUS_TYPE_TI1250,
 844        CARDBUS_TYPE_RICOH,
 845        CARDBUS_TYPE_TOPIC95,
 846        CARDBUS_TYPE_TOPIC97,
 847        CARDBUS_TYPE_O2MICRO,
 848        CARDBUS_TYPE_ENE,
 849};
 850
 851/*
 852 * Different cardbus controllers have slightly different
 853 * initialization sequences etc details. List them here..
 854 */
 855static struct cardbus_type cardbus_type[] = {
 856#ifdef CONFIG_YENTA_TI
 857        [CARDBUS_TYPE_TI]       = {
 858                .override       = ti_override,
 859                .save_state     = ti_save_state,
 860                .restore_state  = ti_restore_state,
 861                .sock_init      = ti_init,
 862        },
 863        [CARDBUS_TYPE_TI113X]   = {
 864                .override       = ti113x_override,
 865                .save_state     = ti_save_state,
 866                .restore_state  = ti_restore_state,
 867                .sock_init      = ti_init,
 868        },
 869        [CARDBUS_TYPE_TI12XX]   = {
 870                .override       = ti12xx_override,
 871                .save_state     = ti_save_state,
 872                .restore_state  = ti_restore_state,
 873                .sock_init      = ti_init,
 874        },
 875        [CARDBUS_TYPE_TI1250]   = {
 876                .override       = ti1250_override,
 877                .save_state     = ti_save_state,
 878                .restore_state  = ti_restore_state,
 879                .sock_init      = ti_init,
 880        },
 881        [CARDBUS_TYPE_ENE]      = {
 882                .override       = ene_override,
 883                .save_state     = ti_save_state,
 884                .restore_state  = ti_restore_state,
 885                .sock_init      = ti_init,
 886        },
 887#endif
 888#ifdef CONFIG_YENTA_RICOH
 889        [CARDBUS_TYPE_RICOH]    = {
 890                .override       = ricoh_override,
 891                .save_state     = ricoh_save_state,
 892                .restore_state  = ricoh_restore_state,
 893        },
 894#endif
 895#ifdef CONFIG_YENTA_TOSHIBA
 896        [CARDBUS_TYPE_TOPIC95]  = {
 897                .override       = topic95_override,
 898        },
 899        [CARDBUS_TYPE_TOPIC97]  = {
 900                .override       = topic97_override,
 901        },
 902#endif
 903#ifdef CONFIG_YENTA_O2
 904        [CARDBUS_TYPE_O2MICRO]  = {
 905                .override       = o2micro_override,
 906                .restore_state  = o2micro_restore_state,
 907        },
 908#endif
 909};
 910
 911
 912static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
 913{
 914        int i;
 915        unsigned long val;
 916        u32 mask;
 917        u8 reg;
 918
 919        /*
 920         * Probe for usable interrupts using the force
 921         * register to generate bogus card status events.
 922         */
 923        cb_writel(socket, CB_SOCKET_EVENT, -1);
 924        cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
 925        reg = exca_readb(socket, I365_CSCINT);
 926        exca_writeb(socket, I365_CSCINT, 0);
 927        val = probe_irq_on() & isa_irq_mask;
 928        for (i = 1; i < 16; i++) {
 929                if (!((val >> i) & 1))
 930                        continue;
 931                exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4));
 932                cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
 933                udelay(100);
 934                cb_writel(socket, CB_SOCKET_EVENT, -1);
 935        }
 936        cb_writel(socket, CB_SOCKET_MASK, 0);
 937        exca_writeb(socket, I365_CSCINT, reg);
 938
 939        mask = probe_irq_mask(val) & 0xffff;
 940
 941        return mask;
 942}
 943
 944
 945/*
 946 * yenta PCI irq probing.
 947 * currently only used in the TI/EnE initialization code
 948 */
 949#ifdef CONFIG_YENTA_TI
 950
 951/* interrupt handler, only used during probing */
 952static irqreturn_t yenta_probe_handler(int irq, void *dev_id)
 953{
 954        struct yenta_socket *socket = (struct yenta_socket *) dev_id;
 955        u8 csc;
 956        u32 cb_event;
 957
 958        /* Clear interrupt status for the event */
 959        cb_event = cb_readl(socket, CB_SOCKET_EVENT);
 960        cb_writel(socket, CB_SOCKET_EVENT, -1);
 961        csc = exca_readb(socket, I365_CSC);
 962
 963        if (cb_event || csc) {
 964                socket->probe_status = 1;
 965                return IRQ_HANDLED;
 966        }
 967
 968        return IRQ_NONE;
 969}
 970
 971/* probes the PCI interrupt, use only on override functions */
 972static int yenta_probe_cb_irq(struct yenta_socket *socket)
 973{
 974        u8 reg = 0;
 975
 976        if (!socket->cb_irq)
 977                return -1;
 978
 979        socket->probe_status = 0;
 980
 981        if (request_irq(socket->cb_irq, yenta_probe_handler, IRQF_SHARED, "yenta", socket)) {
 982                dev_warn(&socket->dev->dev,
 983                         "request_irq() in yenta_probe_cb_irq() failed!\n");
 984                return -1;
 985        }
 986
 987        /* generate interrupt, wait */
 988        if (!socket->dev->irq)
 989                reg = exca_readb(socket, I365_CSCINT);
 990        exca_writeb(socket, I365_CSCINT, reg | I365_CSC_STSCHG);
 991        cb_writel(socket, CB_SOCKET_EVENT, -1);
 992        cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
 993        cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
 994
 995        msleep(100);
 996
 997        /* disable interrupts */
 998        cb_writel(socket, CB_SOCKET_MASK, 0);
 999        exca_writeb(socket, I365_CSCINT, reg);
1000        cb_writel(socket, CB_SOCKET_EVENT, -1);
1001        exca_readb(socket, I365_CSC);
1002
1003        free_irq(socket->cb_irq, socket);
1004
1005        return (int) socket->probe_status;
1006}
1007
1008#endif /* CONFIG_YENTA_TI */
1009
1010
1011/*
1012 * Set static data that doesn't need re-initializing..
1013 */
1014static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask)
1015{
1016        socket->socket.pci_irq = socket->cb_irq;
1017        if (isa_probe)
1018                socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
1019        else
1020                socket->socket.irq_mask = 0;
1021
1022        dev_info(&socket->dev->dev, "ISA IRQ mask 0x%04x, PCI irq %d\n",
1023                 socket->socket.irq_mask, socket->cb_irq);
1024}
1025
1026/*
1027 * Initialize the standard cardbus registers
1028 */
1029static void yenta_config_init(struct yenta_socket *socket)
1030{
1031        u16 bridge;
1032        struct pci_dev *dev = socket->dev;
1033        struct pci_bus_region region;
1034
1035        pcibios_resource_to_bus(socket->dev->bus, &region, &dev->resource[0]);
1036
1037        config_writel(socket, CB_LEGACY_MODE_BASE, 0);
1038        config_writel(socket, PCI_BASE_ADDRESS_0, region.start);
1039        config_writew(socket, PCI_COMMAND,
1040                        PCI_COMMAND_IO |
1041                        PCI_COMMAND_MEMORY |
1042                        PCI_COMMAND_MASTER |
1043                        PCI_COMMAND_WAIT);
1044
1045        /* MAGIC NUMBERS! Fixme */
1046        config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4);
1047        config_writeb(socket, PCI_LATENCY_TIMER, 168);
1048        config_writel(socket, PCI_PRIMARY_BUS,
1049                (176 << 24) |                      /* sec. latency timer */
1050                ((unsigned int)dev->subordinate->busn_res.end << 16) | /* subordinate bus */
1051                ((unsigned int)dev->subordinate->busn_res.start << 8) |  /* secondary bus */
1052                dev->subordinate->primary);                /* primary bus */
1053
1054        /*
1055         * Set up the bridging state:
1056         *  - enable write posting.
1057         *  - memory window 0 prefetchable, window 1 non-prefetchable
1058         *  - PCI interrupts enabled if a PCI interrupt exists..
1059         */
1060        bridge = config_readw(socket, CB_BRIDGE_CONTROL);
1061        bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
1062        bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN;
1063        config_writew(socket, CB_BRIDGE_CONTROL, bridge);
1064}
1065
1066/**
1067 * yenta_fixup_parent_bridge - Fix subordinate bus# of the parent bridge
1068 * @cardbus_bridge: The PCI bus which the CardBus bridge bridges to
1069 *
1070 * Checks if devices on the bus which the CardBus bridge bridges to would be
1071 * invisible during PCI scans because of a misconfigured subordinate number
1072 * of the parent brige - some BIOSes seem to be too lazy to set it right.
1073 * Does the fixup carefully by checking how far it can go without conflicts.
1074 * See http://bugzilla.kernel.org/show_bug.cgi?id=2944 for more information.
1075 */
1076static void yenta_fixup_parent_bridge(struct pci_bus *cardbus_bridge)
1077{
1078        struct pci_bus *sibling;
1079        unsigned char upper_limit;
1080        /*
1081         * We only check and fix the parent bridge: All systems which need
1082         * this fixup that have been reviewed are laptops and the only bridge
1083         * which needed fixing was the parent bridge of the CardBus bridge:
1084         */
1085        struct pci_bus *bridge_to_fix = cardbus_bridge->parent;
1086
1087        /* Check bus numbers are already set up correctly: */
1088        if (bridge_to_fix->busn_res.end >= cardbus_bridge->busn_res.end)
1089                return; /* The subordinate number is ok, nothing to do */
1090
1091        if (!bridge_to_fix->parent)
1092                return; /* Root bridges are ok */
1093
1094        /* stay within the limits of the bus range of the parent: */
1095        upper_limit = bridge_to_fix->parent->busn_res.end;
1096
1097        /* check the bus ranges of all sibling bridges to prevent overlap */
1098        list_for_each_entry(sibling, &bridge_to_fix->parent->children,
1099                        node) {
1100                /*
1101                 * If the sibling has a higher secondary bus number
1102                 * and it's secondary is equal or smaller than our
1103                 * current upper limit, set the new upper limit to
1104                 * the bus number below the sibling's range:
1105                 */
1106                if (sibling->busn_res.start > bridge_to_fix->busn_res.end
1107                    && sibling->busn_res.start <= upper_limit)
1108                        upper_limit = sibling->busn_res.start - 1;
1109        }
1110
1111        /* Show that the wanted subordinate number is not possible: */
1112        if (cardbus_bridge->busn_res.end > upper_limit)
1113                dev_warn(&cardbus_bridge->dev,
1114                         "Upper limit for fixing this bridge's parent bridge: #%02x\n",
1115                         upper_limit);
1116
1117        /* If we have room to increase the bridge's subordinate number, */
1118        if (bridge_to_fix->busn_res.end < upper_limit) {
1119
1120                /* use the highest number of the hidden bus, within limits */
1121                unsigned char subordinate_to_assign =
1122                        min_t(int, cardbus_bridge->busn_res.end, upper_limit);
1123
1124                dev_info(&bridge_to_fix->dev,
1125                         "Raising subordinate bus# of parent bus (#%02x) from #%02x to #%02x\n",
1126                         bridge_to_fix->number,
1127                         (int)bridge_to_fix->busn_res.end,
1128                         subordinate_to_assign);
1129
1130                /* Save the new subordinate in the bus struct of the bridge */
1131                bridge_to_fix->busn_res.end = subordinate_to_assign;
1132
1133                /* and update the PCI config space with the new subordinate */
1134                pci_write_config_byte(bridge_to_fix->self,
1135                        PCI_SUBORDINATE_BUS, bridge_to_fix->busn_res.end);
1136        }
1137}
1138
1139/*
1140 * Initialize a cardbus controller. Make sure we have a usable
1141 * interrupt, and that we can map the cardbus area. Fill in the
1142 * socket information structure..
1143 */
1144static int yenta_probe(struct pci_dev *dev, const struct pci_device_id *id)
1145{
1146        struct yenta_socket *socket;
1147        int ret;
1148
1149        /*
1150         * If we failed to assign proper bus numbers for this cardbus
1151         * controller during PCI probe, its subordinate pci_bus is NULL.
1152         * Bail out if so.
1153         */
1154        if (!dev->subordinate) {
1155                dev_err(&dev->dev, "no bus associated! (try 'pci=assign-busses')\n");
1156                return -ENODEV;
1157        }
1158
1159        socket = kzalloc(sizeof(struct yenta_socket), GFP_KERNEL);
1160        if (!socket)
1161                return -ENOMEM;
1162
1163        /* prepare pcmcia_socket */
1164        socket->socket.ops = &yenta_socket_operations;
1165        socket->socket.resource_ops = &pccard_nonstatic_ops;
1166        socket->socket.dev.parent = &dev->dev;
1167        socket->socket.driver_data = socket;
1168        socket->socket.owner = THIS_MODULE;
1169        socket->socket.features = SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
1170        socket->socket.map_size = 0x1000;
1171        socket->socket.cb_dev = dev;
1172
1173        /* prepare struct yenta_socket */
1174        socket->dev = dev;
1175        pci_set_drvdata(dev, socket);
1176
1177        /*
1178         * Do some basic sanity checking..
1179         */
1180        if (pci_enable_device(dev)) {
1181                ret = -EBUSY;
1182                goto free;
1183        }
1184
1185        ret = pci_request_regions(dev, "yenta_socket");
1186        if (ret)
1187                goto disable;
1188
1189        if (!pci_resource_start(dev, 0)) {
1190                dev_err(&dev->dev, "No cardbus resource!\n");
1191                ret = -ENODEV;
1192                goto release;
1193        }
1194
1195        /*
1196         * Ok, start setup.. Map the cardbus registers,
1197         * and request the IRQ.
1198         */
1199        socket->base = ioremap(pci_resource_start(dev, 0), 0x1000);
1200        if (!socket->base) {
1201                ret = -ENOMEM;
1202                goto release;
1203        }
1204
1205        /*
1206         * report the subsystem vendor and device for help debugging
1207         * the irq stuff...
1208         */
1209        dev_info(&dev->dev, "CardBus bridge found [%04x:%04x]\n",
1210                 dev->subsystem_vendor, dev->subsystem_device);
1211
1212        yenta_config_init(socket);
1213
1214        /* Disable all events */
1215        cb_writel(socket, CB_SOCKET_MASK, 0x0);
1216
1217        /* Set up the bridge regions.. */
1218        yenta_allocate_resources(socket);
1219
1220        socket->cb_irq = dev->irq;
1221
1222        /* Do we have special options for the device? */
1223        if (id->driver_data != CARDBUS_TYPE_DEFAULT &&
1224            id->driver_data < ARRAY_SIZE(cardbus_type)) {
1225                socket->type = &cardbus_type[id->driver_data];
1226
1227                ret = socket->type->override(socket);
1228                if (ret < 0)
1229                        goto unmap;
1230        }
1231
1232        /* We must finish initialization here */
1233
1234        if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, IRQF_SHARED, "yenta", socket)) {
1235                /* No IRQ or request_irq failed. Poll */
1236                socket->cb_irq = 0; /* But zero is a valid IRQ number. */
1237                timer_setup(&socket->poll_timer, yenta_interrupt_wrapper, 0);
1238                mod_timer(&socket->poll_timer, jiffies + HZ);
1239                dev_info(&dev->dev,
1240                         "no PCI IRQ, CardBus support disabled for this socket.\n");
1241                dev_info(&dev->dev,
1242                         "check your BIOS CardBus, BIOS IRQ or ACPI settings.\n");
1243        } else {
1244                socket->socket.features |= SS_CAP_CARDBUS;
1245        }
1246
1247        /* Figure out what the dang thing can do for the PCMCIA layer... */
1248        yenta_interrogate(socket);
1249        yenta_get_socket_capabilities(socket, isa_interrupts);
1250        dev_info(&dev->dev, "Socket status: %08x\n",
1251                 cb_readl(socket, CB_SOCKET_STATE));
1252
1253        yenta_fixup_parent_bridge(dev->subordinate);
1254
1255        /* Register it with the pcmcia layer.. */
1256        ret = pcmcia_register_socket(&socket->socket);
1257        if (ret)
1258                goto free_irq;
1259
1260        /* Add the yenta register attributes */
1261        ret = device_create_file(&dev->dev, &dev_attr_yenta_registers);
1262        if (ret)
1263                goto unregister_socket;
1264
1265        return ret;
1266
1267        /* error path... */
1268 unregister_socket:
1269        pcmcia_unregister_socket(&socket->socket);
1270 free_irq:
1271        if (socket->cb_irq)
1272                free_irq(socket->cb_irq, socket);
1273        else
1274                del_timer_sync(&socket->poll_timer);
1275 unmap:
1276        iounmap(socket->base);
1277        yenta_free_resources(socket);
1278 release:
1279        pci_release_regions(dev);
1280 disable:
1281        pci_disable_device(dev);
1282 free:
1283        pci_set_drvdata(dev, NULL);
1284        kfree(socket);
1285        return ret;
1286}
1287
1288#ifdef CONFIG_PM
1289static int yenta_dev_suspend_noirq(struct device *dev)
1290{
1291        struct pci_dev *pdev = to_pci_dev(dev);
1292        struct yenta_socket *socket = pci_get_drvdata(pdev);
1293
1294        if (!socket)
1295                return 0;
1296
1297        if (socket->type && socket->type->save_state)
1298                socket->type->save_state(socket);
1299
1300        pci_save_state(pdev);
1301        pci_read_config_dword(pdev, 16*4, &socket->saved_state[0]);
1302        pci_read_config_dword(pdev, 17*4, &socket->saved_state[1]);
1303        pci_disable_device(pdev);
1304
1305        return 0;
1306}
1307
1308static int yenta_dev_resume_noirq(struct device *dev)
1309{
1310        struct pci_dev *pdev = to_pci_dev(dev);
1311        struct yenta_socket *socket = pci_get_drvdata(pdev);
1312        int ret;
1313
1314        if (!socket)
1315                return 0;
1316
1317        pci_write_config_dword(pdev, 16*4, socket->saved_state[0]);
1318        pci_write_config_dword(pdev, 17*4, socket->saved_state[1]);
1319
1320        ret = pci_enable_device(pdev);
1321        if (ret)
1322                return ret;
1323
1324        pci_set_master(pdev);
1325
1326        if (socket->type && socket->type->restore_state)
1327                socket->type->restore_state(socket);
1328
1329        return 0;
1330}
1331
1332static const struct dev_pm_ops yenta_pm_ops = {
1333        .suspend_noirq = yenta_dev_suspend_noirq,
1334        .resume_noirq = yenta_dev_resume_noirq,
1335        .freeze_noirq = yenta_dev_suspend_noirq,
1336        .thaw_noirq = yenta_dev_resume_noirq,
1337        .poweroff_noirq = yenta_dev_suspend_noirq,
1338        .restore_noirq = yenta_dev_resume_noirq,
1339};
1340
1341#define YENTA_PM_OPS    (&yenta_pm_ops)
1342#else
1343#define YENTA_PM_OPS    NULL
1344#endif
1345
1346#define CB_ID(vend, dev, type)                          \
1347        {                                               \
1348                .vendor         = vend,                 \
1349                .device         = dev,                  \
1350                .subvendor      = PCI_ANY_ID,           \
1351                .subdevice      = PCI_ANY_ID,           \
1352                .class          = PCI_CLASS_BRIDGE_CARDBUS << 8, \
1353                .class_mask     = ~0,                   \
1354                .driver_data    = CARDBUS_TYPE_##type,  \
1355        }
1356
1357static const struct pci_device_id yenta_table[] = {
1358        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI),
1359
1360        /*
1361         * TBD: Check if these TI variants can use more
1362         * advanced overrides instead.  (I can't get the
1363         * data sheets for these devices. --rmk)
1364         */
1365#ifdef CONFIG_YENTA_TI
1366        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI),
1367
1368        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X),
1369        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X),
1370
1371        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX),
1372        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX),
1373        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX),
1374        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX),
1375        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX),
1376        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX),
1377        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX),
1378        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX),
1379        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX),
1380        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX),
1381        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX),
1382        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX),
1383        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX),
1384        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX),
1385        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX),
1386        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX),
1387        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX),
1388
1389        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250),
1390        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250),
1391
1392        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11, TI12XX),
1393        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X515, TI12XX),
1394        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12, TI12XX),
1395        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X420, TI12XX),
1396        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X620, TI12XX),
1397        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7410, TI12XX),
1398        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7510, TI12XX),
1399        CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7610, TI12XX),
1400
1401        CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_710, ENE),
1402        CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_712, ENE),
1403        CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_720, ENE),
1404        CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_722, ENE),
1405        CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, ENE),
1406        CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, ENE),
1407        CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, ENE),
1408        CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, ENE),
1409#endif /* CONFIG_YENTA_TI */
1410
1411#ifdef CONFIG_YENTA_RICOH
1412        CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH),
1413        CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH),
1414        CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH),
1415        CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH),
1416        CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH),
1417#endif
1418
1419#ifdef CONFIG_YENTA_TOSHIBA
1420        CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC95, TOPIC95),
1421        CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
1422        CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
1423#endif
1424
1425#ifdef CONFIG_YENTA_O2
1426        CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO),
1427#endif
1428
1429        /* match any cardbus bridge */
1430        CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT),
1431        { /* all zeroes */ }
1432};
1433MODULE_DEVICE_TABLE(pci, yenta_table);
1434
1435
1436static struct pci_driver yenta_cardbus_driver = {
1437        .name           = "yenta_cardbus",
1438        .id_table       = yenta_table,
1439        .probe          = yenta_probe,
1440        .remove         = yenta_close,
1441        .driver.pm      = YENTA_PM_OPS,
1442};
1443
1444module_pci_driver(yenta_cardbus_driver);
1445
1446MODULE_LICENSE("GPL");
1447