drivers/pcmcia/ti113x.h

   1 /*
   2  * ti113x.h 1.16 1999/10/25 20:03:34
   3  *
   4  * The contents of this file are subject to the Mozilla Public License
   5  * Version 1.1 (the "License"); you may not use this file except in
   6  * compliance with the License. You may obtain a copy of the License
   7  * at http://www.mozilla.org/MPL/
   8  *
   9  * Software distributed under the License is distributed on an "AS IS"
  10  * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
  11  * the License for the specific language governing rights and
  12  * limitations under the License.
  13  *
  14  * The initial developer of the original code is David A. Hinds
  15  * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
  16  * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
  17  *
  18  * Alternatively, the contents of this file may be used under the
  19  * terms of the GNU General Public License version 2 (the "GPL"), in which
  20  * case the provisions of the GPL are applicable instead of the
  21  * above.  If you wish to allow the use of your version of this file
  22  * only under the terms of the GPL and not to allow others to use
  23  * your version of this file under the MPL, indicate your decision by
  24  * deleting the provisions above and replace them with the notice and
  25  * other provisions required by the GPL.  If you do not delete the
  26  * provisions above, a recipient may use your version of this file
  27  * under either the MPL or the GPL.
  28  */
  29
  30 #ifndef _LINUX_TI113X_H
  31 #define _LINUX_TI113X_H
  32
  33 #include <linux/config.h>
  34
  35 /* Register definitions for TI 113X PCI-to-CardBus bridges */
  36
  37 /* System Control Register */
  38 #define TI113X_SYSTEM_CONTROL           0x0080  /* 32 bit */
  39 #define  TI113X_SCR_SMIROUTE            0x04000000
  40 #define  TI113X_SCR_SMISTATUS           0x02000000
  41 #define  TI113X_SCR_SMIENB              0x01000000
  42 #define  TI113X_SCR_VCCPROT             0x00200000
  43 #define  TI113X_SCR_REDUCEZV            0x00100000
  44 #define  TI113X_SCR_CDREQEN             0x00080000
  45 #define  TI113X_SCR_CDMACHAN            0x00070000
  46 #define  TI113X_SCR_SOCACTIVE           0x00002000
  47 #define  TI113X_SCR_PWRSTREAM           0x00000800
  48 #define  TI113X_SCR_DELAYUP             0x00000400
  49 #define  TI113X_SCR_DELAYDOWN           0x00000200
  50 #define  TI113X_SCR_INTERROGATE         0x00000100
  51 #define  TI113X_SCR_CLKRUN_SEL          0x00000080
  52 #define  TI113X_SCR_PWRSAVINGS          0x00000040
  53 #define  TI113X_SCR_SUBSYSRW            0x00000020
  54 #define  TI113X_SCR_CB_DPAR             0x00000010
  55 #define  TI113X_SCR_CDMA_EN             0x00000008
  56 #define  TI113X_SCR_ASYNC_IRQ           0x00000004
  57 #define  TI113X_SCR_KEEPCLK             0x00000002
  58 #define  TI113X_SCR_CLKRUN_ENA          0x00000001
  59
  60 #define  TI122X_SCR_SER_STEP            0xc0000000
  61 #define  TI122X_SCR_INTRTIE             0x20000000
  62 #define  TI122X_SCR_CBRSVD              0x00400000
  63 #define  TI122X_SCR_MRBURSTDN           0x00008000
  64 #define  TI122X_SCR_MRBURSTUP           0x00004000
  65 #define  TI122X_SCR_RIMUX               0x00000001
  66
  67 /* Multimedia Control Register */
  68 #define TI1250_MULTIMEDIA_CTL           0x0084  /* 8 bit */
  69 #define  TI1250_MMC_ZVOUTEN             0x80
  70 #define  TI1250_MMC_PORTSEL             0x40
  71 #define  TI1250_MMC_ZVEN1               0x02
  72 #define  TI1250_MMC_ZVEN0               0x01
  73
  74 #define TI1250_GENERAL_STATUS           0x0085  /* 8 bit */
  75 #define TI1250_GPIO0_CONTROL            0x0088  /* 8 bit */
  76 #define TI1250_GPIO1_CONTROL            0x0089  /* 8 bit */
  77 #define TI1250_GPIO2_CONTROL            0x008a  /* 8 bit */
  78 #define TI1250_GPIO3_CONTROL            0x008b  /* 8 bit */
  79 #define TI1250_GPIO_MODE_MASK           0xc0
  80
  81 /* IRQMUX/MFUNC Register */
  82 #define TI122X_MFUNC                    0x008c  /* 32 bit */
  83 #define TI122X_MFUNC0_MASK              0x0000000f
  84 #define TI122X_MFUNC1_MASK              0x000000f0
  85 #define TI122X_MFUNC2_MASK              0x00000f00
  86 #define TI122X_MFUNC3_MASK              0x0000f000
  87 #define TI122X_MFUNC4_MASK              0x000f0000
  88 #define TI122X_MFUNC5_MASK              0x00f00000
  89 #define TI122X_MFUNC6_MASK              0x0f000000
  90
  91 #define TI122X_MFUNC0_INTA              0x00000002
  92 #define TI125X_MFUNC0_INTB              0x00000001
  93 #define TI122X_MFUNC1_INTB              0x00000020
  94 #define TI122X_MFUNC3_IRQSER            0x00001000
  95
  96
  97 /* Retry Status Register */
  98 #define TI113X_RETRY_STATUS             0x0090  /* 8 bit */
  99 #define  TI113X_RSR_PCIRETRY            0x80
 100 #define  TI113X_RSR_CBRETRY             0x40
 101 #define  TI113X_RSR_TEXP_CBB            0x20
 102 #define  TI113X_RSR_MEXP_CBB            0x10
 103 #define  TI113X_RSR_TEXP_CBA            0x08
 104 #define  TI113X_RSR_MEXP_CBA            0x04
 105 #define  TI113X_RSR_TEXP_PCI            0x02
 106 #define  TI113X_RSR_MEXP_PCI            0x01
 107
 108 /* Card Control Register */
 109 #define TI113X_CARD_CONTROL             0x0091  /* 8 bit */
 110 #define  TI113X_CCR_RIENB               0x80
 111 #define  TI113X_CCR_ZVENABLE            0x40
 112 #define  TI113X_CCR_PCI_IRQ_ENA         0x20
 113 #define  TI113X_CCR_PCI_IREQ            0x10
 114 #define  TI113X_CCR_PCI_CSC             0x08
 115 #define  TI113X_CCR_SPKROUTEN           0x02
 116 #define  TI113X_CCR_IFG                 0x01
 117
 118 #define  TI1220_CCR_PORT_SEL            0x20
 119 #define  TI122X_CCR_AUD2MUX             0x04
 120
 121 /* Device Control Register */
 122 #define TI113X_DEVICE_CONTROL           0x0092  /* 8 bit */
 123 #define  TI113X_DCR_5V_FORCE            0x40
 124 #define  TI113X_DCR_3V_FORCE            0x20
 125 #define  TI113X_DCR_IMODE_MASK          0x06
 126 #define  TI113X_DCR_IMODE_ISA           0x02
 127 #define  TI113X_DCR_IMODE_SERIAL        0x04
 128
 129 #define  TI12XX_DCR_IMODE_PCI_ONLY      0x00
 130 #define  TI12XX_DCR_IMODE_ALL_SERIAL    0x06
 131
 132 /* Buffer Control Register */
 133 #define TI113X_BUFFER_CONTROL           0x0093  /* 8 bit */
 134 #define  TI113X_BCR_CB_READ_DEPTH       0x08
 135 #define  TI113X_BCR_CB_WRITE_DEPTH      0x04
 136 #define  TI113X_BCR_PCI_READ_DEPTH      0x02
 137 #define  TI113X_BCR_PCI_WRITE_DEPTH     0x01
 138
 139 /* Diagnostic Register */
 140 #define TI1250_DIAGNOSTIC               0x0093  /* 8 bit */
 141 #define  TI1250_DIAG_TRUE_VALUE         0x80
 142 #define  TI1250_DIAG_PCI_IREQ           0x40
 143 #define  TI1250_DIAG_PCI_CSC            0x20
 144 #define  TI1250_DIAG_ASYNC_CSC          0x01
 145
 146 /* DMA Registers */
 147 #define TI113X_DMA_0                    0x0094  /* 32 bit */
 148 #define TI113X_DMA_1                    0x0098  /* 32 bit */
 149
 150 /* ExCA IO offset registers */
 151 #define TI113X_IO_OFFSET(map)           (0x36+((map)<<1))
 152
 153 /* EnE test register */
 154 #define ENE_TEST_C9                     0xc9    /* 8bit */
 155 #define ENE_TEST_C9_TLTENABLE           0x02
 156
 157 #ifdef CONFIG_CARDBUS
 158
 159 /*
 160  * Texas Instruments CardBus controller overrides.
 161  */
 162 #define ti_sysctl(socket)       ((socket)->private[0])
 163 #define ti_cardctl(socket)      ((socket)->private[1])
 164 #define ti_devctl(socket)       ((socket)->private[2])
 165 #define ti_diag(socket)         ((socket)->private[3])
 166 #define ti_mfunc(socket)        ((socket)->private[4])
 167 #define ene_test_c9(socket)     ((socket)->private[5])
 168
 169 /*
 170  * These are the TI specific power management handlers.
 171  */
 172 static void ti_save_state(struct yenta_socket *socket)
 173 {
 174         ti_sysctl(socket) = config_readl(socket, TI113X_SYSTEM_CONTROL);
 175         ti_mfunc(socket) = config_readl(socket, TI122X_MFUNC);
 176         ti_cardctl(socket) = config_readb(socket, TI113X_CARD_CONTROL);
 177         ti_devctl(socket) = config_readb(socket, TI113X_DEVICE_CONTROL);
 178         ti_diag(socket) = config_readb(socket, TI1250_DIAGNOSTIC);
 179
 180         if (socket->dev->vendor == PCI_VENDOR_ID_ENE)
 181                 ene_test_c9(socket) = config_readb(socket, ENE_TEST_C9);
 182 }
 183
 184 static void ti_restore_state(struct yenta_socket *socket)
 185 {
 186         config_writel(socket, TI113X_SYSTEM_CONTROL, ti_sysctl(socket));
 187         config_writel(socket, TI122X_MFUNC, ti_mfunc(socket));
 188         config_writeb(socket, TI113X_CARD_CONTROL, ti_cardctl(socket));
 189         config_writeb(socket, TI113X_DEVICE_CONTROL, ti_devctl(socket));
 190         config_writeb(socket, TI1250_DIAGNOSTIC, ti_diag(socket));
 191
 192         if (socket->dev->vendor == PCI_VENDOR_ID_ENE)
 193                 config_writeb(socket, ENE_TEST_C9, ene_test_c9(socket));
 194 }
 195
 196 /*
 197  *      Zoom video control for TI122x/113x chips
 198  */
 199
 200 static void ti_zoom_video(struct pcmcia_socket *sock, int onoff)
 201 {
 202         u8 reg;
 203         struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 204
 205         /* If we don't have a Zoom Video switch this is harmless,
 206            we just tristate the unused (ZV) lines */
 207         reg = config_readb(socket, TI113X_CARD_CONTROL);
 208         if (onoff)
 209                 /* Zoom zoom, we will all go together, zoom zoom, zoom zoom */
 210                 reg |= TI113X_CCR_ZVENABLE;
 211         else
 212                 reg &= ~TI113X_CCR_ZVENABLE;
 213         config_writeb(socket, TI113X_CARD_CONTROL, reg);
 214 }
 215
 216 /*
 217  *      The 145x series can also use this. They have an additional
 218  *      ZV autodetect mode we don't use but don't actually need.
 219  *      FIXME: manual says its in func0 and func1 but disagrees with
 220  *      itself about this - do we need to force func0, if so we need
 221  *      to know a lot more about socket pairings in pcmcia_socket than
 222  *      we do now.. uggh.
 223  */
 224
 225 static void ti1250_zoom_video(struct pcmcia_socket *sock, int onoff)
 226 {
 227         struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 228         int shift = 0;
 229         u8 reg;
 230
 231         ti_zoom_video(sock, onoff);
 232
 233         reg = config_readb(socket, TI1250_MULTIMEDIA_CTL);
 234         reg |= TI1250_MMC_ZVOUTEN;      /* ZV bus enable */
 235
 236         if(PCI_FUNC(socket->dev->devfn)==1)
 237                 shift = 1;
 238
 239         if(onoff)
 240         {
 241                 reg &= ~(1<<6);         /* Clear select bit */
 242                 reg |= shift<<6;        /* Favour our socket */
 243                 reg |= 1<<shift;        /* Socket zoom video on */
 244         }
 245         else
 246         {
 247                 reg &= ~(1<<6);         /* Clear select bit */
 248                 reg |= (1^shift)<<6;    /* Favour other socket */
 249                 reg &= ~(1<<shift);     /* Socket zoon video off */
 250         }
 251
 252         config_writeb(socket, TI1250_MULTIMEDIA_CTL, reg);
 253 }
 254
 255 static void ti_set_zv(struct yenta_socket *socket)
 256 {
 257         if(socket->dev->vendor == PCI_VENDOR_ID_TI)
 258         {
 259                 switch(socket->dev->device)
 260                 {
 261                         /* There may be more .. */
 262                         case PCI_DEVICE_ID_TI_1220:
 263                         case PCI_DEVICE_ID_TI_1221:
 264                         case PCI_DEVICE_ID_TI_1225:
 265                         case PCI_DEVICE_ID_TI_4510:
 266                                 socket->socket.zoom_video = ti_zoom_video;
 267                                 break;
 268                         case PCI_DEVICE_ID_TI_1250:
 269                         case PCI_DEVICE_ID_TI_1251A:
 270                         case PCI_DEVICE_ID_TI_1251B:
 271                         case PCI_DEVICE_ID_TI_1450:
 272                                 socket->socket.zoom_video = ti1250_zoom_video;
 273                 }
 274         }
 275 }
 276
 277
 278 /*
 279  * Generic TI init - TI has an extension for the
 280  * INTCTL register that sets the PCI CSC interrupt.
 281  * Make sure we set it correctly at open and init
 282  * time
 283  * - override: disable the PCI CSC interrupt. This makes
 284  *   it possible to use the CSC interrupt to probe the
 285  *   ISA interrupts.
 286  * - init: set the interrupt to match our PCI state.
 287  *   This makes us correctly get PCI CSC interrupt
 288  *   events.
 289  */
 290 static int ti_init(struct yenta_socket *socket)
 291 {
 292         u8 new, reg = exca_readb(socket, I365_INTCTL);
 293
 294         new = reg & ~I365_INTR_ENA;
 295         if (socket->cb_irq)
 296                 new |= I365_INTR_ENA;
 297         if (new != reg)
 298                 exca_writeb(socket, I365_INTCTL, new);
 299         return 0;
 300 }
 301
 302 static int ti_override(struct yenta_socket *socket)
 303 {
 304         u8 new, reg = exca_readb(socket, I365_INTCTL);
 305
 306         new = reg & ~I365_INTR_ENA;
 307         if (new != reg)
 308                 exca_writeb(socket, I365_INTCTL, new);
 309
 310         ti_set_zv(socket);
 311
 312         return 0;
 313 }
 314
 315 static int ti113x_override(struct yenta_socket *socket)
 316 {
 317         u8 cardctl;
 318
 319         cardctl = config_readb(socket, TI113X_CARD_CONTROL);
 320         cardctl &= ~(TI113X_CCR_PCI_IRQ_ENA | TI113X_CCR_PCI_IREQ | TI113X_CCR_PCI_CSC);
 321         if (socket->cb_irq)
 322                 cardctl |= TI113X_CCR_PCI_IRQ_ENA | TI113X_CCR_PCI_CSC | TI113X_CCR_PCI_IREQ;
 323         config_writeb(socket, TI113X_CARD_CONTROL, cardctl);
 324
 325         return ti_override(socket);
 326 }
 327
 328
 329 /* irqrouting for func0, probes PCI interrupt and ISA interrupts */
 330 static void ti12xx_irqroute_func0(struct yenta_socket *socket)
 331 {
 332         u32 mfunc, mfunc_old, devctl;
 333         u8 gpio3, gpio3_old;
 334         int pci_irq_status;
 335
 336         mfunc = mfunc_old = config_readl(socket, TI122X_MFUNC);
 337         devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
 338         printk(KERN_INFO "Yenta TI: socket %s, mfunc 0x%08x, devctl 0x%02x\n",
 339                pci_name(socket->dev), mfunc, devctl);
 340
 341         /* make sure PCI interrupts are enabled before probing */
 342         ti_init(socket);
 343
 344         /* test PCI interrupts first. only try fixing if return value is 0! */
 345         pci_irq_status = yenta_probe_cb_irq(socket);
 346         if (pci_irq_status)
 347                 goto out;
 348
 349         /*
 350          * We're here which means PCI interrupts are _not_ delivered. try to
 351          * find the right setting (all serial or parallel)
 352          */
 353         printk(KERN_INFO "Yenta TI: socket %s probing PCI interrupt failed, trying to fix\n",
 354                pci_name(socket->dev));
 355
 356         /* for serial PCI make sure MFUNC3 is set to IRQSER */
 357         if ((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) {
 358                 switch (socket->dev->device) {
 359                 case PCI_DEVICE_ID_TI_1250:
 360                 case PCI_DEVICE_ID_TI_1251A:
 361                 case PCI_DEVICE_ID_TI_1251B:
 362                 case PCI_DEVICE_ID_TI_1450:
 363                 case PCI_DEVICE_ID_TI_1451A:
 364                 case PCI_DEVICE_ID_TI_4450:
 365                 case PCI_DEVICE_ID_TI_4451:
 366                         /* these chips have no IRQSER setting in MFUNC3  */
 367                         break;
 368
 369                 default:
 370                         mfunc = (mfunc & ~TI122X_MFUNC3_MASK) | TI122X_MFUNC3_IRQSER;
 371
 372                         /* write down if changed, probe */
 373                         if (mfunc != mfunc_old) {
 374                                 config_writel(socket, TI122X_MFUNC, mfunc);
 375
 376                                 pci_irq_status = yenta_probe_cb_irq(socket);
 377                                 if (pci_irq_status == 1) {
 378                                         printk(KERN_INFO "Yenta TI: socket %s all-serial interrupts ok\n",
 379                                                pci_name(socket->dev));
 380                                         mfunc_old = mfunc;
 381                                         goto out;
 382                                 }
 383
 384                                 /* not working, back to old value */
 385                                 mfunc = mfunc_old;
 386                                 config_writel(socket, TI122X_MFUNC, mfunc);
 387
 388                                 if (pci_irq_status == -1)
 389                                         goto out;
 390                         }
 391                 }
 392
 393                 /* serial PCI interrupts not working fall back to parallel */
 394                 printk(KERN_INFO "Yenta TI: socket %s falling back to parallel PCI interrupts\n",
 395                        pci_name(socket->dev));
 396                 devctl &= ~TI113X_DCR_IMODE_MASK;
 397                 devctl |= TI113X_DCR_IMODE_SERIAL; /* serial ISA could be right */
 398                 config_writeb(socket, TI113X_DEVICE_CONTROL, devctl);
 399         }
 400
 401         /* parallel PCI interrupts: route INTA */
 402         switch (socket->dev->device) {
 403         case PCI_DEVICE_ID_TI_1250:
 404         case PCI_DEVICE_ID_TI_1251A:
 405         case PCI_DEVICE_ID_TI_1251B:
 406         case PCI_DEVICE_ID_TI_1450:
 407                 /* make sure GPIO3 is set to INTA */
 408                 gpio3 = gpio3_old = config_readb(socket, TI1250_GPIO3_CONTROL);
 409                 gpio3 &= ~TI1250_GPIO_MODE_MASK;
 410                 if (gpio3 != gpio3_old)
 411                         config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3);
 412                 break;
 413
 414         default:
 415                 gpio3 = gpio3_old = 0;
 416
 417                 mfunc = (mfunc & ~TI122X_MFUNC0_MASK) | TI122X_MFUNC0_INTA;
 418                 if (mfunc != mfunc_old)
 419                         config_writel(socket, TI122X_MFUNC, mfunc);
 420         }
 421
 422         /* time to probe again */
 423         pci_irq_status = yenta_probe_cb_irq(socket);
 424         if (pci_irq_status == 1) {
 425                 mfunc_old = mfunc;
 426                 printk(KERN_INFO "Yenta TI: socket %s parallel PCI interrupts ok\n",
 427                        pci_name(socket->dev));
 428         } else {
 429                 /* not working, back to old value */
 430                 mfunc = mfunc_old;
 431                 config_writel(socket, TI122X_MFUNC, mfunc);
 432                 if (gpio3 != gpio3_old)
 433                         config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3_old);
 434         }
 435
 436 out:
 437         if (pci_irq_status < 1) {
 438                 socket->cb_irq = 0;
 439                 printk(KERN_INFO "Yenta TI: socket %s no PCI interrupts. Fish. Please report.\n",
 440                        pci_name(socket->dev));
 441         }
 442 }
 443
 444
 445 /* changes the irq of func1 to match that of func0 */
 446 static int ti12xx_align_irqs(struct yenta_socket *socket, int *old_irq)
 447 {
 448         struct pci_dev *func0;
 449
 450         /* find func0 device */
 451         func0 = pci_get_slot(socket->dev->bus, socket->dev->devfn & ~0x07);
 452         if (!func0)
 453                 return 0;
 454
 455         if (old_irq)
 456                 *old_irq = socket->cb_irq;
 457         socket->cb_irq = socket->dev->irq = func0->irq;
 458
 459         pci_dev_put(func0);
 460
 461         return 1;
 462 }
 463
 464 /*
 465  * ties INTA and INTB together. also changes the devices irq to that of
 466  * the function 0 device. call from func1 only.
 467  * returns 1 if INTRTIE changed, 0 otherwise.
 468  */
 469 static int ti12xx_tie_interrupts(struct yenta_socket *socket, int *old_irq)
 470 {
 471         u32 sysctl;
 472         int ret;
 473
 474         sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
 475         if (sysctl & TI122X_SCR_INTRTIE)
 476                 return 0;
 477
 478         /* align */
 479         ret = ti12xx_align_irqs(socket, old_irq);
 480         if (!ret)
 481                 return 0;
 482
 483         /* tie */
 484         sysctl |= TI122X_SCR_INTRTIE;
 485         config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);
 486
 487         return 1;
 488 }
 489
 490 /* undo what ti12xx_tie_interrupts() did */
 491 static void ti12xx_untie_interrupts(struct yenta_socket *socket, int old_irq)
 492 {
 493         u32 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
 494         sysctl &= ~TI122X_SCR_INTRTIE;
 495         config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);
 496
 497         socket->cb_irq = socket->dev->irq = old_irq;
 498 }
 499
 500 /*
 501  * irqrouting for func1, plays with INTB routing
 502  * only touches MFUNC for INTB routing. all other bits are taken
 503  * care of in func0 already.
 504  */
 505 static void ti12xx_irqroute_func1(struct yenta_socket *socket)
 506 {
 507         u32 mfunc, mfunc_old, devctl, sysctl;
 508         int pci_irq_status;
 509
 510         mfunc = mfunc_old = config_readl(socket, TI122X_MFUNC);
 511         devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
 512         printk(KERN_INFO "Yenta TI: socket %s, mfunc 0x%08x, devctl 0x%02x\n",
 513                pci_name(socket->dev), mfunc, devctl);
 514
 515         /* if IRQs are configured as tied, align irq of func1 with func0 */
 516         sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
 517         if (sysctl & TI122X_SCR_INTRTIE)
 518                 ti12xx_align_irqs(socket, NULL);
 519
 520         /* make sure PCI interrupts are enabled before probing */
 521         ti_init(socket);
 522
 523         /* test PCI interrupts first. only try fixing if return value is 0! */
 524         pci_irq_status = yenta_probe_cb_irq(socket);
 525         if (pci_irq_status)
 526                 goto out;
 527
 528         /*
 529          * We're here which means PCI interrupts are _not_ delivered. try to
 530          * find the right setting
 531          */
 532         printk(KERN_INFO "Yenta TI: socket %s probing PCI interrupt failed, trying to fix\n",
 533                pci_name(socket->dev));
 534
 535
 536         /* if all serial: set INTRTIE, probe again */
 537         if ((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) {
 538                 int old_irq;
 539
 540                 if (ti12xx_tie_interrupts(socket, &old_irq)) {
 541                         pci_irq_status = yenta_probe_cb_irq(socket);
 542                         if (pci_irq_status == 1) {
 543                                 printk(KERN_INFO "Yenta TI: socket %s all-serial interrupts, tied ok\n",
 544                                        pci_name(socket->dev));
 545                                 goto out;
 546                         }
 547
 548                         ti12xx_untie_interrupts(socket, old_irq);
 549                 }
 550         }
 551         /* parallel PCI: route INTB, probe again */
 552         else {
 553                 int old_irq;
 554
 555                 switch (socket->dev->device) {
 556                 case PCI_DEVICE_ID_TI_1250:
 557                         /* the 1250 has one pin for IRQSER/INTB depending on devctl */
 558                         break;
 559
 560                 case PCI_DEVICE_ID_TI_1251A:
 561                 case PCI_DEVICE_ID_TI_1251B:
 562                 case PCI_DEVICE_ID_TI_1450:
 563                         /*
 564                          *  those have a pin for IRQSER/INTB plus INTB in MFUNC0
 565                          *  we alread probed the shared pin, now go for MFUNC0
 566                          */
 567                         mfunc = (mfunc & ~TI122X_MFUNC0_MASK) | TI125X_MFUNC0_INTB;
 568                         break;
 569
 570                 default:
 571                         mfunc = (mfunc & ~TI122X_MFUNC1_MASK) | TI122X_MFUNC1_INTB;
 572                         break;
 573                 }
 574
 575                 /* write, probe */
 576                 if (mfunc != mfunc_old) {
 577                         config_writel(socket, TI122X_MFUNC, mfunc);
 578
 579                         pci_irq_status = yenta_probe_cb_irq(socket);
 580                         if (pci_irq_status == 1) {
 581                                 printk(KERN_INFO "Yenta TI: socket %s parallel PCI interrupts ok\n",
 582                                        pci_name(socket->dev));
 583                                 goto out;
 584                         }
 585
 586                         mfunc = mfunc_old;
 587                         config_writel(socket, TI122X_MFUNC, mfunc);
 588
 589                         if (pci_irq_status == -1)
 590                                 goto out;
 591                 }
 592
 593                 /* still nothing: set INTRTIE */
 594                 if (ti12xx_tie_interrupts(socket, &old_irq)) {
 595                         pci_irq_status = yenta_probe_cb_irq(socket);
 596                         if (pci_irq_status == 1) {
 597                                 printk(KERN_INFO "Yenta TI: socket %s parallel PCI interrupts, tied ok\n",
 598                                        pci_name(socket->dev));
 599                                 goto out;
 600                         }
 601
 602                         ti12xx_untie_interrupts(socket, old_irq);
 603                 }
 604         }
 605
 606 out:
 607         if (pci_irq_status < 1) {
 608                 socket->cb_irq = 0;
 609                 printk(KERN_INFO "Yenta TI: socket %s no PCI interrupts. Fish. Please report.\n",
 610                        pci_name(socket->dev));
 611         }
 612 }
 613
 614 static int ti12xx_override(struct yenta_socket *socket)
 615 {
 616         u32 val, val_orig;
 617
 618         /* make sure that memory burst is active */
 619         val_orig = val = config_readl(socket, TI113X_SYSTEM_CONTROL);
 620         if (disable_clkrun && PCI_FUNC(socket->dev->devfn) == 0) {
 621                 printk(KERN_INFO "Yenta: Disabling CLKRUN feature\n");
 622                 val |= TI113X_SCR_KEEPCLK;
 623         }
 624         if (!(val & TI122X_SCR_MRBURSTUP)) {
 625                 printk(KERN_INFO "Yenta: Enabling burst memory read transactions\n");
 626                 val |= TI122X_SCR_MRBURSTUP;
 627         }
 628         if (val_orig != val)
 629                 config_writel(socket, TI113X_SYSTEM_CONTROL, val);
 630
 631         /*
 632          * for EnE bridges only: clear testbit TLTEnable. this makes the
 633          * RME Hammerfall DSP sound card working.
 634          */
 635         if (socket->dev->vendor == PCI_VENDOR_ID_ENE) {
 636                 u8 test_c9 = config_readb(socket, ENE_TEST_C9);
 637                 test_c9 &= ~ENE_TEST_C9_TLTENABLE;
 638                 config_writeb(socket, ENE_TEST_C9, test_c9);
 639         }
 640
 641         /*
 642          * Yenta expects controllers to use CSCINT to route
 643          * CSC interrupts to PCI rather than INTVAL.
 644          */
 645         val = config_readb(socket, TI1250_DIAGNOSTIC);
 646         printk(KERN_INFO "Yenta: Using %s to route CSC interrupts to PCI\n",
 647                 (val & TI1250_DIAG_PCI_CSC) ? "CSCINT" : "INTVAL");
 648         printk(KERN_INFO "Yenta: Routing CardBus interrupts to %s\n",
 649                 (val & TI1250_DIAG_PCI_IREQ) ? "PCI" : "ISA");
 650
 651         /* do irqrouting, depending on function */
 652         if (PCI_FUNC(socket->dev->devfn) == 0)
 653                 ti12xx_irqroute_func0(socket);
 654         else
 655                 ti12xx_irqroute_func1(socket);
 656
 657         return ti_override(socket);
 658 }
 659
 660
 661 static int ti1250_override(struct yenta_socket *socket)
 662 {
 663         u8 old, diag;
 664
 665         old = config_readb(socket, TI1250_DIAGNOSTIC);
 666         diag = old & ~(TI1250_DIAG_PCI_CSC | TI1250_DIAG_PCI_IREQ);
 667         if (socket->cb_irq)
 668                 diag |= TI1250_DIAG_PCI_CSC | TI1250_DIAG_PCI_IREQ;
 669
 670         if (diag != old) {
 671                 printk(KERN_INFO "Yenta: adjusting diagnostic: %02x -> %02x\n",
 672                         old, diag);
 673                 config_writeb(socket, TI1250_DIAGNOSTIC, diag);
 674         }
 675
 676         return ti12xx_override(socket);
 677 }
 678
 679 #endif /* CONFIG_CARDBUS */
 680
 681 #endif /* _LINUX_TI113X_H */
 682