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
  34 /* Register definitions for TI 113X PCI-to-CardBus bridges */
  35
  36 /* System Control Register */
  37 #define TI113X_SYSTEM_CONTROL           0x0080  /* 32 bit */
  38 #define  TI113X_SCR_SMIROUTE            0x04000000
  39 #define  TI113X_SCR_SMISTATUS           0x02000000
  40 #define  TI113X_SCR_SMIENB              0x01000000
  41 #define  TI113X_SCR_VCCPROT             0x00200000
  42 #define  TI113X_SCR_REDUCEZV            0x00100000
  43 #define  TI113X_SCR_CDREQEN             0x00080000
  44 #define  TI113X_SCR_CDMACHAN            0x00070000
  45 #define  TI113X_SCR_SOCACTIVE           0x00002000
  46 #define  TI113X_SCR_PWRSTREAM           0x00000800
  47 #define  TI113X_SCR_DELAYUP             0x00000400
  48 #define  TI113X_SCR_DELAYDOWN           0x00000200
  49 #define  TI113X_SCR_INTERROGATE         0x00000100
  50 #define  TI113X_SCR_CLKRUN_SEL          0x00000080
  51 #define  TI113X_SCR_PWRSAVINGS          0x00000040
  52 #define  TI113X_SCR_SUBSYSRW            0x00000020
  53 #define  TI113X_SCR_CB_DPAR             0x00000010
  54 #define  TI113X_SCR_CDMA_EN             0x00000008
  55 #define  TI113X_SCR_ASYNC_IRQ           0x00000004
  56 #define  TI113X_SCR_KEEPCLK             0x00000002
  57 #define  TI113X_SCR_CLKRUN_ENA          0x00000001
  58
  59 #define  TI122X_SCR_SER_STEP            0xc0000000
  60 #define  TI122X_SCR_INTRTIE             0x20000000
  61 #define  TIXX21_SCR_TIEALL              0x10000000
  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 #define ENE_TEST_C9_PFENABLE_F0         0x04
 157 #define ENE_TEST_C9_PFENABLE_F1         0x08
 158 #define ENE_TEST_C9_PFENABLE            (ENE_TEST_C9_PFENABLE_F0 | ENE_TEST_C9_PFENABLE_F1)
 159 #define ENE_TEST_C9_WPDISALBLE_F0       0x40
 160 #define ENE_TEST_C9_WPDISALBLE_F1       0x80
 161 #define ENE_TEST_C9_WPDISALBLE          (ENE_TEST_C9_WPDISALBLE_F0 | ENE_TEST_C9_WPDISALBLE_F1)
 162
 163 /*
 164  * Texas Instruments CardBus controller overrides.
 165  */
 166 #define ti_sysctl(socket)       ((socket)->private[0])
 167 #define ti_cardctl(socket)      ((socket)->private[1])
 168 #define ti_devctl(socket)       ((socket)->private[2])
 169 #define ti_diag(socket)         ((socket)->private[3])
 170 #define ti_mfunc(socket)        ((socket)->private[4])
 171 #define ene_test_c9(socket)     ((socket)->private[5])
 172
 173 /*
 174  * These are the TI specific power management handlers.
 175  */
 176 static void ti_save_state(struct yenta_socket *socket)
 177 {
 178         ti_sysctl(socket) = config_readl(socket, TI113X_SYSTEM_CONTROL);
 179         ti_mfunc(socket) = config_readl(socket, TI122X_MFUNC);
 180         ti_cardctl(socket) = config_readb(socket, TI113X_CARD_CONTROL);
 181         ti_devctl(socket) = config_readb(socket, TI113X_DEVICE_CONTROL);
 182         ti_diag(socket) = config_readb(socket, TI1250_DIAGNOSTIC);
 183
 184         if (socket->dev->vendor == PCI_VENDOR_ID_ENE)
 185                 ene_test_c9(socket) = config_readb(socket, ENE_TEST_C9);
 186 }
 187
 188 static void ti_restore_state(struct yenta_socket *socket)
 189 {
 190         config_writel(socket, TI113X_SYSTEM_CONTROL, ti_sysctl(socket));
 191         config_writel(socket, TI122X_MFUNC, ti_mfunc(socket));
 192         config_writeb(socket, TI113X_CARD_CONTROL, ti_cardctl(socket));
 193         config_writeb(socket, TI113X_DEVICE_CONTROL, ti_devctl(socket));
 194         config_writeb(socket, TI1250_DIAGNOSTIC, ti_diag(socket));
 195
 196         if (socket->dev->vendor == PCI_VENDOR_ID_ENE)
 197                 config_writeb(socket, ENE_TEST_C9, ene_test_c9(socket));
 198 }
 199
 200 /*
 201  *      Zoom video control for TI122x/113x chips
 202  */
 203
 204 static void ti_zoom_video(struct pcmcia_socket *sock, int onoff)
 205 {
 206         u8 reg;
 207         struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 208
 209         /* If we don't have a Zoom Video switch this is harmless,
 210            we just tristate the unused (ZV) lines */
 211         reg = config_readb(socket, TI113X_CARD_CONTROL);
 212         if (onoff)
 213                 /* Zoom zoom, we will all go together, zoom zoom, zoom zoom */
 214                 reg |= TI113X_CCR_ZVENABLE;
 215         else
 216                 reg &= ~TI113X_CCR_ZVENABLE;
 217         config_writeb(socket, TI113X_CARD_CONTROL, reg);
 218 }
 219
 220 /*
 221  *      The 145x series can also use this. They have an additional
 222  *      ZV autodetect mode we don't use but don't actually need.
 223  *      FIXME: manual says its in func0 and func1 but disagrees with
 224  *      itself about this - do we need to force func0, if so we need
 225  *      to know a lot more about socket pairings in pcmcia_socket than
 226  *      we do now.. uggh.
 227  */
 228
 229 static void ti1250_zoom_video(struct pcmcia_socket *sock, int onoff)
 230 {
 231         struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 232         int shift = 0;
 233         u8 reg;
 234
 235         ti_zoom_video(sock, onoff);
 236
 237         reg = config_readb(socket, TI1250_MULTIMEDIA_CTL);
 238         reg |= TI1250_MMC_ZVOUTEN;      /* ZV bus enable */
 239
 240         if(PCI_FUNC(socket->dev->devfn)==1)
 241                 shift = 1;
 242
 243         if(onoff)
 244         {
 245                 reg &= ~(1<<6);         /* Clear select bit */
 246                 reg |= shift<<6;        /* Favour our socket */
 247                 reg |= 1<<shift;        /* Socket zoom video on */
 248         }
 249         else
 250         {
 251                 reg &= ~(1<<6);         /* Clear select bit */
 252                 reg |= (1^shift)<<6;    /* Favour other socket */
 253                 reg &= ~(1<<shift);     /* Socket zoon video off */
 254         }
 255
 256         config_writeb(socket, TI1250_MULTIMEDIA_CTL, reg);
 257 }
 258
 259 static void ti_set_zv(struct yenta_socket *socket)
 260 {
 261         if(socket->dev->vendor == PCI_VENDOR_ID_TI)
 262         {
 263                 switch(socket->dev->device)
 264                 {
 265                         /* There may be more .. */
 266                         case PCI_DEVICE_ID_TI_1220:
 267                         case PCI_DEVICE_ID_TI_1221:
 268                         case PCI_DEVICE_ID_TI_1225:
 269                         case PCI_DEVICE_ID_TI_4510:
 270                                 socket->socket.zoom_video = ti_zoom_video;
 271                                 break;
 272                         case PCI_DEVICE_ID_TI_1250:
 273                         case PCI_DEVICE_ID_TI_1251A:
 274                         case PCI_DEVICE_ID_TI_1251B:
 275                         case PCI_DEVICE_ID_TI_1450:
 276                                 socket->socket.zoom_video = ti1250_zoom_video;
 277                 }
 278         }
 279 }
 280
 281
 282 /*
 283  * Generic TI init - TI has an extension for the
 284  * INTCTL register that sets the PCI CSC interrupt.
 285  * Make sure we set it correctly at open and init
 286  * time
 287  * - override: disable the PCI CSC interrupt. This makes
 288  *   it possible to use the CSC interrupt to probe the
 289  *   ISA interrupts.
 290  * - init: set the interrupt to match our PCI state.
 291  *   This makes us correctly get PCI CSC interrupt
 292  *   events.
 293  */
 294 static int ti_init(struct yenta_socket *socket)
 295 {
 296         u8 new, reg = exca_readb(socket, I365_INTCTL);
 297
 298         new = reg & ~I365_INTR_ENA;
 299         if (socket->dev->irq)
 300                 new |= I365_INTR_ENA;
 301         if (new != reg)
 302                 exca_writeb(socket, I365_INTCTL, new);
 303         return 0;
 304 }
 305
 306 static int ti_override(struct yenta_socket *socket)
 307 {
 308         u8 new, reg = exca_readb(socket, I365_INTCTL);
 309
 310         new = reg & ~I365_INTR_ENA;
 311         if (new != reg)
 312                 exca_writeb(socket, I365_INTCTL, new);
 313
 314         ti_set_zv(socket);
 315
 316         return 0;
 317 }
 318
 319 static void ti113x_use_isa_irq(struct yenta_socket *socket)
 320 {
 321         int isa_irq = -1;
 322         u8 intctl;
 323         u32 isa_irq_mask = 0;
 324
 325         if (!isa_probe)
 326                 return;
 327
 328         /* get a free isa int */
 329         isa_irq_mask = yenta_probe_irq(socket, isa_interrupts);
 330         if (!isa_irq_mask)
 331                 return; /* no useable isa irq found */
 332
 333         /* choose highest available */
 334         for (; isa_irq_mask; isa_irq++)
 335                 isa_irq_mask >>= 1;
 336         socket->cb_irq = isa_irq;
 337
 338         exca_writeb(socket, I365_CSCINT, (isa_irq << 4));
 339
 340         intctl = exca_readb(socket, I365_INTCTL);
 341         intctl &= ~(I365_INTR_ENA | I365_IRQ_MASK);     /* CSC Enable */
 342         exca_writeb(socket, I365_INTCTL, intctl);
 343
 344         dev_info(&socket->dev->dev,
 345                 "Yenta TI113x: using isa irq %d for CardBus\n", isa_irq);
 346 }
 347
 348
 349 static int ti113x_override(struct yenta_socket *socket)
 350 {
 351         u8 cardctl;
 352
 353         cardctl = config_readb(socket, TI113X_CARD_CONTROL);
 354         cardctl &= ~(TI113X_CCR_PCI_IRQ_ENA | TI113X_CCR_PCI_IREQ | TI113X_CCR_PCI_CSC);
 355         if (socket->dev->irq)
 356                 cardctl |= TI113X_CCR_PCI_IRQ_ENA | TI113X_CCR_PCI_CSC | TI113X_CCR_PCI_IREQ;
 357         else
 358                 ti113x_use_isa_irq(socket);
 359
 360         config_writeb(socket, TI113X_CARD_CONTROL, cardctl);
 361
 362         return ti_override(socket);
 363 }
 364
 365
 366 /* irqrouting for func0, probes PCI interrupt and ISA interrupts */
 367 static void ti12xx_irqroute_func0(struct yenta_socket *socket)
 368 {
 369         u32 mfunc, mfunc_old, devctl;
 370         u8 gpio3, gpio3_old;
 371         int pci_irq_status;
 372
 373         mfunc = mfunc_old = config_readl(socket, TI122X_MFUNC);
 374         devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
 375         dev_info(&socket->dev->dev, "TI: mfunc 0x%08x, devctl 0x%02x\n",
 376                  mfunc, devctl);
 377
 378         /* make sure PCI interrupts are enabled before probing */
 379         ti_init(socket);
 380
 381         /* test PCI interrupts first. only try fixing if return value is 0! */
 382         pci_irq_status = yenta_probe_cb_irq(socket);
 383         if (pci_irq_status)
 384                 goto out;
 385
 386         /*
 387          * We're here which means PCI interrupts are _not_ delivered. try to
 388          * find the right setting (all serial or parallel)
 389          */
 390         dev_info(&socket->dev->dev,
 391                  "TI: probing PCI interrupt failed, trying to fix\n");
 392
 393         /* for serial PCI make sure MFUNC3 is set to IRQSER */
 394         if ((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) {
 395                 switch (socket->dev->device) {
 396                 case PCI_DEVICE_ID_TI_1250:
 397                 case PCI_DEVICE_ID_TI_1251A:
 398                 case PCI_DEVICE_ID_TI_1251B:
 399                 case PCI_DEVICE_ID_TI_1450:
 400                 case PCI_DEVICE_ID_TI_1451A:
 401                 case PCI_DEVICE_ID_TI_4450:
 402                 case PCI_DEVICE_ID_TI_4451:
 403                         /* these chips have no IRQSER setting in MFUNC3  */
 404                         break;
 405
 406                 default:
 407                         mfunc = (mfunc & ~TI122X_MFUNC3_MASK) | TI122X_MFUNC3_IRQSER;
 408
 409                         /* write down if changed, probe */
 410                         if (mfunc != mfunc_old) {
 411                                 config_writel(socket, TI122X_MFUNC, mfunc);
 412
 413                                 pci_irq_status = yenta_probe_cb_irq(socket);
 414                                 if (pci_irq_status == 1) {
 415                                         dev_info(&socket->dev->dev,
 416                                                  "TI: all-serial interrupts ok\n");
 417                                         mfunc_old = mfunc;
 418                                         goto out;
 419                                 }
 420
 421                                 /* not working, back to old value */
 422                                 mfunc = mfunc_old;
 423                                 config_writel(socket, TI122X_MFUNC, mfunc);
 424
 425                                 if (pci_irq_status == -1)
 426                                         goto out;
 427                         }
 428                 }
 429
 430                 /* serial PCI interrupts not working fall back to parallel */
 431                 dev_info(&socket->dev->dev,
 432                          "TI: falling back to parallel PCI interrupts\n");
 433                 devctl &= ~TI113X_DCR_IMODE_MASK;
 434                 devctl |= TI113X_DCR_IMODE_SERIAL; /* serial ISA could be right */
 435                 config_writeb(socket, TI113X_DEVICE_CONTROL, devctl);
 436         }
 437
 438         /* parallel PCI interrupts: route INTA */
 439         switch (socket->dev->device) {
 440         case PCI_DEVICE_ID_TI_1250:
 441         case PCI_DEVICE_ID_TI_1251A:
 442         case PCI_DEVICE_ID_TI_1251B:
 443         case PCI_DEVICE_ID_TI_1450:
 444                 /* make sure GPIO3 is set to INTA */
 445                 gpio3 = gpio3_old = config_readb(socket, TI1250_GPIO3_CONTROL);
 446                 gpio3 &= ~TI1250_GPIO_MODE_MASK;
 447                 if (gpio3 != gpio3_old)
 448                         config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3);
 449                 break;
 450
 451         default:
 452                 gpio3 = gpio3_old = 0;
 453
 454                 mfunc = (mfunc & ~TI122X_MFUNC0_MASK) | TI122X_MFUNC0_INTA;
 455                 if (mfunc != mfunc_old)
 456                         config_writel(socket, TI122X_MFUNC, mfunc);
 457         }
 458
 459         /* time to probe again */
 460         pci_irq_status = yenta_probe_cb_irq(socket);
 461         if (pci_irq_status == 1) {
 462                 mfunc_old = mfunc;
 463                 dev_info(&socket->dev->dev, "TI: parallel PCI interrupts ok\n");
 464         } else {
 465                 /* not working, back to old value */
 466                 mfunc = mfunc_old;
 467                 config_writel(socket, TI122X_MFUNC, mfunc);
 468                 if (gpio3 != gpio3_old)
 469                         config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3_old);
 470         }
 471
 472 out:
 473         if (pci_irq_status < 1) {
 474                 socket->cb_irq = 0;
 475                 dev_info(&socket->dev->dev,
 476                          "Yenta TI: no PCI interrupts. Fish. Please report.\n");
 477         }
 478 }
 479
 480
 481 /* changes the irq of func1 to match that of func0 */
 482 static int ti12xx_align_irqs(struct yenta_socket *socket, int *old_irq)
 483 {
 484         struct pci_dev *func0;
 485
 486         /* find func0 device */
 487         func0 = pci_get_slot(socket->dev->bus, socket->dev->devfn & ~0x07);
 488         if (!func0)
 489                 return 0;
 490
 491         if (old_irq)
 492                 *old_irq = socket->cb_irq;
 493         socket->cb_irq = socket->dev->irq = func0->irq;
 494
 495         pci_dev_put(func0);
 496
 497         return 1;
 498 }
 499
 500 /*
 501  * ties INTA and INTB together. also changes the devices irq to that of
 502  * the function 0 device. call from func1 only.
 503  * returns 1 if INTRTIE changed, 0 otherwise.
 504  */
 505 static int ti12xx_tie_interrupts(struct yenta_socket *socket, int *old_irq)
 506 {
 507         u32 sysctl;
 508         int ret;
 509
 510         sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
 511         if (sysctl & TI122X_SCR_INTRTIE)
 512                 return 0;
 513
 514         /* align */
 515         ret = ti12xx_align_irqs(socket, old_irq);
 516         if (!ret)
 517                 return 0;
 518
 519         /* tie */
 520         sysctl |= TI122X_SCR_INTRTIE;
 521         config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);
 522
 523         return 1;
 524 }
 525
 526 /* undo what ti12xx_tie_interrupts() did */
 527 static void ti12xx_untie_interrupts(struct yenta_socket *socket, int old_irq)
 528 {
 529         u32 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
 530         sysctl &= ~TI122X_SCR_INTRTIE;
 531         config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);
 532
 533         socket->cb_irq = socket->dev->irq = old_irq;
 534 }
 535
 536 /*
 537  * irqrouting for func1, plays with INTB routing
 538  * only touches MFUNC for INTB routing. all other bits are taken
 539  * care of in func0 already.
 540  */
 541 static void ti12xx_irqroute_func1(struct yenta_socket *socket)
 542 {
 543         u32 mfunc, mfunc_old, devctl, sysctl;
 544         int pci_irq_status;
 545
 546         mfunc = mfunc_old = config_readl(socket, TI122X_MFUNC);
 547         devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
 548         dev_info(&socket->dev->dev, "TI: mfunc 0x%08x, devctl 0x%02x\n",
 549                  mfunc, devctl);
 550
 551         /* if IRQs are configured as tied, align irq of func1 with func0 */
 552         sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
 553         if (sysctl & TI122X_SCR_INTRTIE)
 554                 ti12xx_align_irqs(socket, NULL);
 555
 556         /* make sure PCI interrupts are enabled before probing */
 557         ti_init(socket);
 558
 559         /* test PCI interrupts first. only try fixing if return value is 0! */
 560         pci_irq_status = yenta_probe_cb_irq(socket);
 561         if (pci_irq_status)
 562                 goto out;
 563
 564         /*
 565          * We're here which means PCI interrupts are _not_ delivered. try to
 566          * find the right setting
 567          */
 568         dev_info(&socket->dev->dev,
 569                  "TI: probing PCI interrupt failed, trying to fix\n");
 570
 571         /* if all serial: set INTRTIE, probe again */
 572         if ((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) {
 573                 int old_irq;
 574
 575                 if (ti12xx_tie_interrupts(socket, &old_irq)) {
 576                         pci_irq_status = yenta_probe_cb_irq(socket);
 577                         if (pci_irq_status == 1) {
 578                                 dev_info(&socket->dev->dev,
 579                                          "TI: all-serial interrupts, tied ok\n");
 580                                 goto out;
 581                         }
 582
 583                         ti12xx_untie_interrupts(socket, old_irq);
 584                 }
 585         }
 586         /* parallel PCI: route INTB, probe again */
 587         else {
 588                 int old_irq;
 589
 590                 switch (socket->dev->device) {
 591                 case PCI_DEVICE_ID_TI_1250:
 592                         /* the 1250 has one pin for IRQSER/INTB depending on devctl */
 593                         break;
 594
 595                 case PCI_DEVICE_ID_TI_1251A:
 596                 case PCI_DEVICE_ID_TI_1251B:
 597                 case PCI_DEVICE_ID_TI_1450:
 598                         /*
 599                          *  those have a pin for IRQSER/INTB plus INTB in MFUNC0
 600                          *  we alread probed the shared pin, now go for MFUNC0
 601                          */
 602                         mfunc = (mfunc & ~TI122X_MFUNC0_MASK) | TI125X_MFUNC0_INTB;
 603                         break;
 604
 605                 default:
 606                         mfunc = (mfunc & ~TI122X_MFUNC1_MASK) | TI122X_MFUNC1_INTB;
 607                         break;
 608                 }
 609
 610                 /* write, probe */
 611                 if (mfunc != mfunc_old) {
 612                         config_writel(socket, TI122X_MFUNC, mfunc);
 613
 614                         pci_irq_status = yenta_probe_cb_irq(socket);
 615                         if (pci_irq_status == 1) {
 616                                 dev_info(&socket->dev->dev,
 617                                          "TI: parallel PCI interrupts ok\n");
 618                                 goto out;
 619                         }
 620
 621                         mfunc = mfunc_old;
 622                         config_writel(socket, TI122X_MFUNC, mfunc);
 623
 624                         if (pci_irq_status == -1)
 625                                 goto out;
 626                 }
 627
 628                 /* still nothing: set INTRTIE */
 629                 if (ti12xx_tie_interrupts(socket, &old_irq)) {
 630                         pci_irq_status = yenta_probe_cb_irq(socket);
 631                         if (pci_irq_status == 1) {
 632                                 dev_info(&socket->dev->dev,
 633                                          "TI: parallel PCI interrupts, tied ok\n");
 634                                 goto out;
 635                         }
 636
 637                         ti12xx_untie_interrupts(socket, old_irq);
 638                 }
 639         }
 640
 641 out:
 642         if (pci_irq_status < 1) {
 643                 socket->cb_irq = 0;
 644                 dev_info(&socket->dev->dev,
 645                          "TI: no PCI interrupts. Fish. Please report.\n");
 646         }
 647 }
 648
 649
 650 /* Returns true value if the second slot of a two-slot controller is empty */
 651 static int ti12xx_2nd_slot_empty(struct yenta_socket *socket)
 652 {
 653         struct pci_dev *func;
 654         struct yenta_socket *slot2;
 655         int devfn;
 656         unsigned int state;
 657         int ret = 1;
 658         u32 sysctl;
 659
 660         /* catch the two-slot controllers */
 661         switch (socket->dev->device) {
 662         case PCI_DEVICE_ID_TI_1220:
 663         case PCI_DEVICE_ID_TI_1221:
 664         case PCI_DEVICE_ID_TI_1225:
 665         case PCI_DEVICE_ID_TI_1251A:
 666         case PCI_DEVICE_ID_TI_1251B:
 667         case PCI_DEVICE_ID_TI_1420:
 668         case PCI_DEVICE_ID_TI_1450:
 669         case PCI_DEVICE_ID_TI_1451A:
 670         case PCI_DEVICE_ID_TI_1520:
 671         case PCI_DEVICE_ID_TI_1620:
 672         case PCI_DEVICE_ID_TI_4520:
 673         case PCI_DEVICE_ID_TI_4450:
 674         case PCI_DEVICE_ID_TI_4451:
 675                 /*
 676                  * there are way more, but they need to be added in yenta_socket.c
 677                  * and pci_ids.h first anyway.
 678                  */
 679                 break;
 680
 681         case PCI_DEVICE_ID_TI_XX12:
 682         case PCI_DEVICE_ID_TI_X515:
 683         case PCI_DEVICE_ID_TI_X420:
 684         case PCI_DEVICE_ID_TI_X620:
 685         case PCI_DEVICE_ID_TI_XX21_XX11:
 686         case PCI_DEVICE_ID_TI_7410:
 687         case PCI_DEVICE_ID_TI_7610:
 688                 /*
 689                  * those are either single or dual slot CB with additional functions
 690                  * like 1394, smartcard reader, etc. check the TIEALL flag for them
 691                  * the TIEALL flag binds the IRQ of all functions together.
 692                  * we catch the single slot variants later.
 693                  */
 694                 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
 695                 if (sysctl & TIXX21_SCR_TIEALL)
 696                         return 0;
 697
 698                 break;
 699
 700         /* single-slot controllers have the 2nd slot empty always :) */
 701         default:
 702                 return 1;
 703         }
 704
 705         /* get other slot */
 706         devfn = socket->dev->devfn & ~0x07;
 707         func = pci_get_slot(socket->dev->bus,
 708                             (socket->dev->devfn & 0x07) ? devfn : devfn | 0x01);
 709         if (!func)
 710                 return 1;
 711
 712         /*
 713          * check that the device id of both slots match. this is needed for the
 714          * XX21 and the XX11 controller that share the same device id for single
 715          * and dual slot controllers. return '2nd slot empty'. we already checked
 716          * if the interrupt is tied to another function.
 717          */
 718         if (socket->dev->device != func->device)
 719                 goto out;
 720
 721         slot2 = pci_get_drvdata(func);
 722         if (!slot2)
 723                 goto out;
 724
 725         /* check state */
 726         yenta_get_status(&slot2->socket, &state);
 727         if (state & SS_DETECT) {
 728                 ret = 0;
 729                 goto out;
 730         }
 731
 732 out:
 733         pci_dev_put(func);
 734         return ret;
 735 }
 736
 737 /*
 738  * TI specifiy parts for the power hook.
 739  *
 740  * some TI's with some CB's produces interrupt storm on power on. it has been
 741  * seen with atheros wlan cards on TI1225 and TI1410. solution is simply to
 742  * disable any CB interrupts during this time.
 743  */
 744 static int ti12xx_power_hook(struct pcmcia_socket *sock, int operation)
 745 {
 746         struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 747         u32 mfunc, devctl, sysctl;
 748         u8 gpio3;
 749
 750         /* only POWER_PRE and POWER_POST are interesting */
 751         if ((operation != HOOK_POWER_PRE) && (operation != HOOK_POWER_POST))
 752                 return 0;
 753
 754         devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
 755         sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
 756         mfunc = config_readl(socket, TI122X_MFUNC);
 757
 758         /*
 759          * all serial/tied: only disable when modparm set. always doing it
 760          * would mean a regression for working setups 'cos it disables the
 761          * interrupts for both both slots on 2-slot controllers
 762          * (and users of single slot controllers where it's save have to
 763          * live with setting the modparm, most don't have to anyway)
 764          */
 765         if (((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) &&
 766             (pwr_irqs_off || ti12xx_2nd_slot_empty(socket))) {
 767                 switch (socket->dev->device) {
 768                 case PCI_DEVICE_ID_TI_1250:
 769                 case PCI_DEVICE_ID_TI_1251A:
 770                 case PCI_DEVICE_ID_TI_1251B:
 771                 case PCI_DEVICE_ID_TI_1450:
 772                 case PCI_DEVICE_ID_TI_1451A:
 773                 case PCI_DEVICE_ID_TI_4450:
 774                 case PCI_DEVICE_ID_TI_4451:
 775                         /* these chips have no IRQSER setting in MFUNC3  */
 776                         break;
 777
 778                 default:
 779                         if (operation == HOOK_POWER_PRE)
 780                                 mfunc = (mfunc & ~TI122X_MFUNC3_MASK);
 781                         else
 782                                 mfunc = (mfunc & ~TI122X_MFUNC3_MASK) | TI122X_MFUNC3_IRQSER;
 783                 }
 784
 785                 return 0;
 786         }
 787
 788         /* do the job differently for func0/1 */
 789         if ((PCI_FUNC(socket->dev->devfn) == 0) ||
 790             ((sysctl & TI122X_SCR_INTRTIE) &&
 791              (pwr_irqs_off || ti12xx_2nd_slot_empty(socket)))) {
 792                 /* some bridges are different */
 793                 switch (socket->dev->device) {
 794                 case PCI_DEVICE_ID_TI_1250:
 795                 case PCI_DEVICE_ID_TI_1251A:
 796                 case PCI_DEVICE_ID_TI_1251B:
 797                 case PCI_DEVICE_ID_TI_1450:
 798                         /* those oldies use gpio3 for INTA */
 799                         gpio3 = config_readb(socket, TI1250_GPIO3_CONTROL);
 800                         if (operation == HOOK_POWER_PRE)
 801                                 gpio3 = (gpio3 & ~TI1250_GPIO_MODE_MASK) | 0x40;
 802                         else
 803                                 gpio3 &= ~TI1250_GPIO_MODE_MASK;
 804                         config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3);
 805                         break;
 806
 807                 default:
 808                         /* all new bridges are the same */
 809                         if (operation == HOOK_POWER_PRE)
 810                                 mfunc &= ~TI122X_MFUNC0_MASK;
 811                         else
 812                                 mfunc |= TI122X_MFUNC0_INTA;
 813                         config_writel(socket, TI122X_MFUNC, mfunc);
 814                 }
 815         } else {
 816                 switch (socket->dev->device) {
 817                 case PCI_DEVICE_ID_TI_1251A:
 818                 case PCI_DEVICE_ID_TI_1251B:
 819                 case PCI_DEVICE_ID_TI_1450:
 820                         /* those have INTA elsewhere and INTB in MFUNC0 */
 821                         if (operation == HOOK_POWER_PRE)
 822                                 mfunc &= ~TI122X_MFUNC0_MASK;
 823                         else
 824                                 mfunc |= TI125X_MFUNC0_INTB;
 825                         config_writel(socket, TI122X_MFUNC, mfunc);
 826
 827                         break;
 828
 829                 default:
 830                         /* all new bridges are the same */
 831                         if (operation == HOOK_POWER_PRE)
 832                                 mfunc &= ~TI122X_MFUNC1_MASK;
 833                         else
 834                                 mfunc |= TI122X_MFUNC1_INTB;
 835                         config_writel(socket, TI122X_MFUNC, mfunc);
 836                 }
 837         }
 838
 839         return 0;
 840 }
 841
 842 static int ti12xx_override(struct yenta_socket *socket)
 843 {
 844         u32 val, val_orig;
 845
 846         /* make sure that memory burst is active */
 847         val_orig = val = config_readl(socket, TI113X_SYSTEM_CONTROL);
 848         if (disable_clkrun && PCI_FUNC(socket->dev->devfn) == 0) {
 849                 dev_info(&socket->dev->dev, "Disabling CLKRUN feature\n");
 850                 val |= TI113X_SCR_KEEPCLK;
 851         }
 852         if (!(val & TI122X_SCR_MRBURSTUP)) {
 853                 dev_info(&socket->dev->dev,
 854                          "Enabling burst memory read transactions\n");
 855                 val |= TI122X_SCR_MRBURSTUP;
 856         }
 857         if (val_orig != val)
 858                 config_writel(socket, TI113X_SYSTEM_CONTROL, val);
 859
 860         /*
 861          * Yenta expects controllers to use CSCINT to route
 862          * CSC interrupts to PCI rather than INTVAL.
 863          */
 864         val = config_readb(socket, TI1250_DIAGNOSTIC);
 865         dev_info(&socket->dev->dev, "Using %s to route CSC interrupts to PCI\n",
 866                  (val & TI1250_DIAG_PCI_CSC) ? "CSCINT" : "INTVAL");
 867         dev_info(&socket->dev->dev, "Routing CardBus interrupts to %s\n",
 868                  (val & TI1250_DIAG_PCI_IREQ) ? "PCI" : "ISA");
 869
 870         /* do irqrouting, depending on function */
 871         if (PCI_FUNC(socket->dev->devfn) == 0)
 872                 ti12xx_irqroute_func0(socket);
 873         else
 874                 ti12xx_irqroute_func1(socket);
 875
 876         /* install power hook */
 877         socket->socket.power_hook = ti12xx_power_hook;
 878
 879         return ti_override(socket);
 880 }
 881
 882
 883 static int ti1250_override(struct yenta_socket *socket)
 884 {
 885         u8 old, diag;
 886
 887         old = config_readb(socket, TI1250_DIAGNOSTIC);
 888         diag = old & ~(TI1250_DIAG_PCI_CSC | TI1250_DIAG_PCI_IREQ);
 889         if (socket->cb_irq)
 890                 diag |= TI1250_DIAG_PCI_CSC | TI1250_DIAG_PCI_IREQ;
 891
 892         if (diag != old) {
 893                 dev_info(&socket->dev->dev,
 894                          "adjusting diagnostic: %02x -> %02x\n",
 895                          old, diag);
 896                 config_writeb(socket, TI1250_DIAGNOSTIC, diag);
 897         }
 898
 899         return ti12xx_override(socket);
 900 }
 901
 902
 903 /**
 904  * EnE specific part. EnE bridges are register compatible with TI bridges but
 905  * have their own test registers and more important their own little problems.
 906  * Some fixup code to make everybody happy (TM).
 907  */
 908
 909 #ifdef CONFIG_YENTA_ENE_TUNE
 910 /*
 911  * set/clear various test bits:
 912  * Defaults to clear the bit.
 913  * - mask (u8) defines what bits to change
 914  * - bits (u8) is the values to change them to
 915  * -> it's
 916  *      current = (current & ~mask) | bits
 917  */
 918 /* pci ids of devices that wants to have the bit set */
 919 #define DEVID(_vend,_dev,_subvend,_subdev,mask,bits) {          \
 920                 .vendor         = _vend,                        \
 921                 .device         = _dev,                         \
 922                 .subvendor      = _subvend,                     \
 923                 .subdevice      = _subdev,                      \
 924                 .driver_data    = ((mask) << 8 | (bits)),       \
 925         }
 926 static struct pci_device_id ene_tune_tbl[] = {
 927         /* Echo Audio products based on motorola DSP56301 and DSP56361 */
 928         DEVID(PCI_VENDOR_ID_MOTOROLA, 0x1801, 0xECC0, PCI_ANY_ID,
 929                 ENE_TEST_C9_TLTENABLE | ENE_TEST_C9_PFENABLE, ENE_TEST_C9_TLTENABLE),
 930         DEVID(PCI_VENDOR_ID_MOTOROLA, 0x3410, 0xECC0, PCI_ANY_ID,
 931                 ENE_TEST_C9_TLTENABLE | ENE_TEST_C9_PFENABLE, ENE_TEST_C9_TLTENABLE),
 932
 933         {}
 934 };
 935
 936 static void ene_tune_bridge(struct pcmcia_socket *sock, struct pci_bus *bus)
 937 {
 938         struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 939         struct pci_dev *dev;
 940         struct pci_device_id *id = NULL;
 941         u8 test_c9, old_c9, mask, bits;
 942
 943         list_for_each_entry(dev, &bus->devices, bus_list) {
 944                 id = (struct pci_device_id *) pci_match_id(ene_tune_tbl, dev);
 945                 if (id)
 946                         break;
 947         }
 948
 949         test_c9 = old_c9 = config_readb(socket, ENE_TEST_C9);
 950         if (id) {
 951                 mask = (id->driver_data >> 8) & 0xFF;
 952                 bits = id->driver_data & 0xFF;
 953
 954                 test_c9 = (test_c9 & ~mask) | bits;
 955         }
 956         else
 957                 /* default to clear TLTEnable bit, old behaviour */
 958                 test_c9 &= ~ENE_TEST_C9_TLTENABLE;
 959
 960         dev_info(&socket->dev->dev,
 961                  "EnE: changing testregister 0xC9, %02x -> %02x\n",
 962                  old_c9, test_c9);
 963         config_writeb(socket, ENE_TEST_C9, test_c9);
 964 }
 965
 966 static int ene_override(struct yenta_socket *socket)
 967 {
 968         /* install tune_bridge() function */
 969         socket->socket.tune_bridge = ene_tune_bridge;
 970
 971         return ti1250_override(socket);
 972 }
 973 #else
 974 #  define ene_override ti1250_override
 975 #endif /* !CONFIG_YENTA_ENE_TUNE */
 976
 977 #endif /* _LINUX_TI113X_H */
 978