drivers/ata/pata_scc.c

   1 /*
   2  * Support for IDE interfaces on Celleb platform
   3  *
   4  * (C) Copyright 2006 TOSHIBA CORPORATION
   5  *
   6  * This code is based on drivers/ata/ata_piix.c:
   7  *  Copyright 2003-2005 Red Hat Inc
   8  *  Copyright 2003-2005 Jeff Garzik
   9  *  Copyright (C) 1998-1999 Andrzej Krzysztofowicz, Author and Maintainer
  10  *  Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
  11  *  Copyright (C) 2003 Red Hat Inc
  12  *
  13  * and drivers/ata/ahci.c:
  14  *  Copyright 2004-2005 Red Hat, Inc.
  15  *
  16  * and drivers/ata/libata-core.c:
  17  *  Copyright 2003-2004 Red Hat, Inc.  All rights reserved.
  18  *  Copyright 2003-2004 Jeff Garzik
  19  *
  20  * This program is free software; you can redistribute it and/or modify
  21  * it under the terms of the GNU General Public License as published by
  22  * the Free Software Foundation; either version 2 of the License, or
  23  * (at your option) any later version.
  24  *
  25  * This program is distributed in the hope that it will be useful,
  26  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  27  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  28  * GNU General Public License for more details.
  29  *
  30  * You should have received a copy of the GNU General Public License along
  31  * with this program; if not, write to the Free Software Foundation, Inc.,
  32  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  33  */
  34
  35 #include <linux/kernel.h>
  36 #include <linux/module.h>
  37 #include <linux/pci.h>
  38 #include <linux/init.h>
  39 #include <linux/blkdev.h>
  40 #include <linux/delay.h>
  41 #include <linux/device.h>
  42 #include <scsi/scsi_host.h>
  43 #include <linux/libata.h>
  44
  45 #define DRV_NAME                "pata_scc"
  46 #define DRV_VERSION             "0.3"
  47
  48 #define PCI_DEVICE_ID_TOSHIBA_SCC_ATA           0x01b4
  49
  50 /* PCI BARs */
  51 #define SCC_CTRL_BAR            0
  52 #define SCC_BMID_BAR            1
  53
  54 /* offset of CTRL registers */
  55 #define SCC_CTL_PIOSHT          0x000
  56 #define SCC_CTL_PIOCT           0x004
  57 #define SCC_CTL_MDMACT          0x008
  58 #define SCC_CTL_MCRCST          0x00C
  59 #define SCC_CTL_SDMACT          0x010
  60 #define SCC_CTL_SCRCST          0x014
  61 #define SCC_CTL_UDENVT          0x018
  62 #define SCC_CTL_TDVHSEL         0x020
  63 #define SCC_CTL_MODEREG         0x024
  64 #define SCC_CTL_ECMODE          0xF00
  65 #define SCC_CTL_MAEA0           0xF50
  66 #define SCC_CTL_MAEC0           0xF54
  67 #define SCC_CTL_CCKCTRL         0xFF0
  68
  69 /* offset of BMID registers */
  70 #define SCC_DMA_CMD             0x000
  71 #define SCC_DMA_STATUS          0x004
  72 #define SCC_DMA_TABLE_OFS       0x008
  73 #define SCC_DMA_INTMASK         0x010
  74 #define SCC_DMA_INTST           0x014
  75 #define SCC_DMA_PTERADD         0x018
  76 #define SCC_REG_CMD_ADDR        0x020
  77 #define SCC_REG_DATA            0x000
  78 #define SCC_REG_ERR             0x004
  79 #define SCC_REG_FEATURE         0x004
  80 #define SCC_REG_NSECT           0x008
  81 #define SCC_REG_LBAL            0x00C
  82 #define SCC_REG_LBAM            0x010
  83 #define SCC_REG_LBAH            0x014
  84 #define SCC_REG_DEVICE          0x018
  85 #define SCC_REG_STATUS          0x01C
  86 #define SCC_REG_CMD             0x01C
  87 #define SCC_REG_ALTSTATUS       0x020
  88
  89 /* register value */
  90 #define TDVHSEL_MASTER          0x00000001
  91 #define TDVHSEL_SLAVE           0x00000004
  92
  93 #define MODE_JCUSFEN            0x00000080
  94
  95 #define ECMODE_VALUE            0x01
  96
  97 #define CCKCTRL_ATARESET        0x00040000
  98 #define CCKCTRL_BUFCNT          0x00020000
  99 #define CCKCTRL_CRST            0x00010000
 100 #define CCKCTRL_OCLKEN          0x00000100
 101 #define CCKCTRL_ATACLKOEN       0x00000002
 102 #define CCKCTRL_LCLKEN          0x00000001
 103
 104 #define QCHCD_IOS_SS            0x00000001
 105
 106 #define QCHSD_STPDIAG           0x00020000
 107
 108 #define INTMASK_MSK             0xD1000012
 109 #define INTSTS_SERROR           0x80000000
 110 #define INTSTS_PRERR            0x40000000
 111 #define INTSTS_RERR             0x10000000
 112 #define INTSTS_ICERR            0x01000000
 113 #define INTSTS_BMSINT           0x00000010
 114 #define INTSTS_BMHE             0x00000008
 115 #define INTSTS_IOIRQS           0x00000004
 116 #define INTSTS_INTRQ            0x00000002
 117 #define INTSTS_ACTEINT          0x00000001
 118
 119
 120 /* PIO transfer mode table */
 121 /* JCHST */
 122 static const unsigned long JCHSTtbl[2][7] = {
 123         {0x0E, 0x05, 0x02, 0x03, 0x02, 0x00, 0x00},     /* 100MHz */
 124         {0x13, 0x07, 0x04, 0x04, 0x03, 0x00, 0x00}      /* 133MHz */
 125 };
 126
 127 /* JCHHT */
 128 static const unsigned long JCHHTtbl[2][7] = {
 129         {0x0E, 0x02, 0x02, 0x02, 0x02, 0x00, 0x00},     /* 100MHz */
 130         {0x13, 0x03, 0x03, 0x03, 0x03, 0x00, 0x00}      /* 133MHz */
 131 };
 132
 133 /* JCHCT */
 134 static const unsigned long JCHCTtbl[2][7] = {
 135         {0x1D, 0x1D, 0x1C, 0x0B, 0x06, 0x00, 0x00},     /* 100MHz */
 136         {0x27, 0x26, 0x26, 0x0E, 0x09, 0x00, 0x00}      /* 133MHz */
 137 };
 138
 139 /* DMA transfer mode  table */
 140 /* JCHDCTM/JCHDCTS */
 141 static const unsigned long JCHDCTxtbl[2][7] = {
 142         {0x0A, 0x06, 0x04, 0x03, 0x01, 0x00, 0x00},     /* 100MHz */
 143         {0x0E, 0x09, 0x06, 0x04, 0x02, 0x01, 0x00}      /* 133MHz */
 144 };
 145
 146 /* JCSTWTM/JCSTWTS  */
 147 static const unsigned long JCSTWTxtbl[2][7] = {
 148         {0x06, 0x04, 0x03, 0x02, 0x02, 0x02, 0x00},     /* 100MHz */
 149         {0x09, 0x06, 0x04, 0x02, 0x02, 0x02, 0x02}      /* 133MHz */
 150 };
 151
 152 /* JCTSS */
 153 static const unsigned long JCTSStbl[2][7] = {
 154         {0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x00},     /* 100MHz */
 155         {0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05}      /* 133MHz */
 156 };
 157
 158 /* JCENVT */
 159 static const unsigned long JCENVTtbl[2][7] = {
 160         {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00},     /* 100MHz */
 161         {0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02}      /* 133MHz */
 162 };
 163
 164 /* JCACTSELS/JCACTSELM */
 165 static const unsigned long JCACTSELtbl[2][7] = {
 166         {0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00},     /* 100MHz */
 167         {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}      /* 133MHz */
 168 };
 169
 170 static const struct pci_device_id scc_pci_tbl[] = {
 171         {PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_SCC_ATA,
 172          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 173         { }     /* terminate list */
 174 };
 175
 176 /**
 177  *      scc_set_piomode - Initialize host controller PATA PIO timings
 178  *      @ap: Port whose timings we are configuring
 179  *      @adev: um
 180  *
 181  *      Set PIO mode for device.
 182  *
 183  *      LOCKING:
 184  *      None (inherited from caller).
 185  */
 186
 187 static void scc_set_piomode (struct ata_port *ap, struct ata_device *adev)
 188 {
 189         unsigned int pio = adev->pio_mode - XFER_PIO_0;
 190         void __iomem *ctrl_base = ap->host->iomap[SCC_CTRL_BAR];
 191         void __iomem *cckctrl_port = ctrl_base + SCC_CTL_CCKCTRL;
 192         void __iomem *piosht_port = ctrl_base + SCC_CTL_PIOSHT;
 193         void __iomem *pioct_port = ctrl_base + SCC_CTL_PIOCT;
 194         unsigned long reg;
 195         int offset;
 196
 197         reg = in_be32(cckctrl_port);
 198         if (reg & CCKCTRL_ATACLKOEN)
 199                 offset = 1;     /* 133MHz */
 200         else
 201                 offset = 0;     /* 100MHz */
 202
 203         reg = JCHSTtbl[offset][pio] << 16 | JCHHTtbl[offset][pio];
 204         out_be32(piosht_port, reg);
 205         reg = JCHCTtbl[offset][pio];
 206         out_be32(pioct_port, reg);
 207 }
 208
 209 /**
 210  *      scc_set_dmamode - Initialize host controller PATA DMA timings
 211  *      @ap: Port whose timings we are configuring
 212  *      @adev: um
 213  *
 214  *      Set UDMA mode for device.
 215  *
 216  *      LOCKING:
 217  *      None (inherited from caller).
 218  */
 219
 220 static void scc_set_dmamode (struct ata_port *ap, struct ata_device *adev)
 221 {
 222         unsigned int udma = adev->dma_mode;
 223         unsigned int is_slave = (adev->devno != 0);
 224         u8 speed = udma;
 225         void __iomem *ctrl_base = ap->host->iomap[SCC_CTRL_BAR];
 226         void __iomem *cckctrl_port = ctrl_base + SCC_CTL_CCKCTRL;
 227         void __iomem *mdmact_port = ctrl_base + SCC_CTL_MDMACT;
 228         void __iomem *mcrcst_port = ctrl_base + SCC_CTL_MCRCST;
 229         void __iomem *sdmact_port = ctrl_base + SCC_CTL_SDMACT;
 230         void __iomem *scrcst_port = ctrl_base + SCC_CTL_SCRCST;
 231         void __iomem *udenvt_port = ctrl_base + SCC_CTL_UDENVT;
 232         void __iomem *tdvhsel_port = ctrl_base + SCC_CTL_TDVHSEL;
 233         int offset, idx;
 234
 235         if (in_be32(cckctrl_port) & CCKCTRL_ATACLKOEN)
 236                 offset = 1;     /* 133MHz */
 237         else
 238                 offset = 0;     /* 100MHz */
 239
 240         if (speed >= XFER_UDMA_0)
 241                 idx = speed - XFER_UDMA_0;
 242         else
 243                 return;
 244
 245         if (is_slave) {
 246                 out_be32(sdmact_port, JCHDCTxtbl[offset][idx]);
 247                 out_be32(scrcst_port, JCSTWTxtbl[offset][idx]);
 248                 out_be32(tdvhsel_port,
 249                          (in_be32(tdvhsel_port) & ~TDVHSEL_SLAVE) | (JCACTSELtbl[offset][idx] << 2));
 250         } else {
 251                 out_be32(mdmact_port, JCHDCTxtbl[offset][idx]);
 252                 out_be32(mcrcst_port, JCSTWTxtbl[offset][idx]);
 253                 out_be32(tdvhsel_port,
 254                          (in_be32(tdvhsel_port) & ~TDVHSEL_MASTER) | JCACTSELtbl[offset][idx]);
 255         }
 256         out_be32(udenvt_port,
 257                  JCTSStbl[offset][idx] << 16 | JCENVTtbl[offset][idx]);
 258 }
 259
 260 unsigned long scc_mode_filter(struct ata_device *adev, unsigned long mask)
 261 {
 262         /* errata A308 workaround: limit ATAPI UDMA mode to UDMA4 */
 263         if (adev->class == ATA_DEV_ATAPI &&
 264             (mask & (0xE0 << ATA_SHIFT_UDMA))) {
 265                 printk(KERN_INFO "%s: limit ATAPI UDMA to UDMA4\n", DRV_NAME);
 266                 mask &= ~(0xE0 << ATA_SHIFT_UDMA);
 267         }
 268         return ata_bmdma_mode_filter(adev, mask);
 269 }
 270
 271 /**
 272  *      scc_tf_load - send taskfile registers to host controller
 273  *      @ap: Port to which output is sent
 274  *      @tf: ATA taskfile register set
 275  *
 276  *      Note: Original code is ata_sff_tf_load().
 277  */
 278
 279 static void scc_tf_load (struct ata_port *ap, const struct ata_taskfile *tf)
 280 {
 281         struct ata_ioports *ioaddr = &ap->ioaddr;
 282         unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
 283
 284         if (tf->ctl != ap->last_ctl) {
 285                 out_be32(ioaddr->ctl_addr, tf->ctl);
 286                 ap->last_ctl = tf->ctl;
 287                 ata_wait_idle(ap);
 288         }
 289
 290         if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
 291                 out_be32(ioaddr->feature_addr, tf->hob_feature);
 292                 out_be32(ioaddr->nsect_addr, tf->hob_nsect);
 293                 out_be32(ioaddr->lbal_addr, tf->hob_lbal);
 294                 out_be32(ioaddr->lbam_addr, tf->hob_lbam);
 295                 out_be32(ioaddr->lbah_addr, tf->hob_lbah);
 296                 VPRINTK("hob: feat 0x%X nsect 0x%X, lba 0x%X 0x%X 0x%X\n",
 297                         tf->hob_feature,
 298                         tf->hob_nsect,
 299                         tf->hob_lbal,
 300                         tf->hob_lbam,
 301                         tf->hob_lbah);
 302         }
 303
 304         if (is_addr) {
 305                 out_be32(ioaddr->feature_addr, tf->feature);
 306                 out_be32(ioaddr->nsect_addr, tf->nsect);
 307                 out_be32(ioaddr->lbal_addr, tf->lbal);
 308                 out_be32(ioaddr->lbam_addr, tf->lbam);
 309                 out_be32(ioaddr->lbah_addr, tf->lbah);
 310                 VPRINTK("feat 0x%X nsect 0x%X lba 0x%X 0x%X 0x%X\n",
 311                         tf->feature,
 312                         tf->nsect,
 313                         tf->lbal,
 314                         tf->lbam,
 315                         tf->lbah);
 316         }
 317
 318         if (tf->flags & ATA_TFLAG_DEVICE) {
 319                 out_be32(ioaddr->device_addr, tf->device);
 320                 VPRINTK("device 0x%X\n", tf->device);
 321         }
 322
 323         ata_wait_idle(ap);
 324 }
 325
 326 /**
 327  *      scc_check_status - Read device status reg & clear interrupt
 328  *      @ap: port where the device is
 329  *
 330  *      Note: Original code is ata_check_status().
 331  */
 332
 333 static u8 scc_check_status (struct ata_port *ap)
 334 {
 335         return in_be32(ap->ioaddr.status_addr);
 336 }
 337
 338 /**
 339  *      scc_tf_read - input device's ATA taskfile shadow registers
 340  *      @ap: Port from which input is read
 341  *      @tf: ATA taskfile register set for storing input
 342  *
 343  *      Note: Original code is ata_sff_tf_read().
 344  */
 345
 346 static void scc_tf_read (struct ata_port *ap, struct ata_taskfile *tf)
 347 {
 348         struct ata_ioports *ioaddr = &ap->ioaddr;
 349
 350         tf->command = scc_check_status(ap);
 351         tf->feature = in_be32(ioaddr->error_addr);
 352         tf->nsect = in_be32(ioaddr->nsect_addr);
 353         tf->lbal = in_be32(ioaddr->lbal_addr);
 354         tf->lbam = in_be32(ioaddr->lbam_addr);
 355         tf->lbah = in_be32(ioaddr->lbah_addr);
 356         tf->device = in_be32(ioaddr->device_addr);
 357
 358         if (tf->flags & ATA_TFLAG_LBA48) {
 359                 out_be32(ioaddr->ctl_addr, tf->ctl | ATA_HOB);
 360                 tf->hob_feature = in_be32(ioaddr->error_addr);
 361                 tf->hob_nsect = in_be32(ioaddr->nsect_addr);
 362                 tf->hob_lbal = in_be32(ioaddr->lbal_addr);
 363                 tf->hob_lbam = in_be32(ioaddr->lbam_addr);
 364                 tf->hob_lbah = in_be32(ioaddr->lbah_addr);
 365                 out_be32(ioaddr->ctl_addr, tf->ctl);
 366                 ap->last_ctl = tf->ctl;
 367         }
 368 }
 369
 370 /**
 371  *      scc_exec_command - issue ATA command to host controller
 372  *      @ap: port to which command is being issued
 373  *      @tf: ATA taskfile register set
 374  *
 375  *      Note: Original code is ata_sff_exec_command().
 376  */
 377
 378 static void scc_exec_command (struct ata_port *ap,
 379                               const struct ata_taskfile *tf)
 380 {
 381         DPRINTK("ata%u: cmd 0x%X\n", ap->print_id, tf->command);
 382
 383         out_be32(ap->ioaddr.command_addr, tf->command);
 384         ata_sff_pause(ap);
 385 }
 386
 387 /**
 388  *      scc_check_altstatus - Read device alternate status reg
 389  *      @ap: port where the device is
 390  */
 391
 392 static u8 scc_check_altstatus (struct ata_port *ap)
 393 {
 394         return in_be32(ap->ioaddr.altstatus_addr);
 395 }
 396
 397 /**
 398  *      scc_dev_select - Select device 0/1 on ATA bus
 399  *      @ap: ATA channel to manipulate
 400  *      @device: ATA device (numbered from zero) to select
 401  *
 402  *      Note: Original code is ata_sff_dev_select().
 403  */
 404
 405 static void scc_dev_select (struct ata_port *ap, unsigned int device)
 406 {
 407         u8 tmp;
 408
 409         if (device == 0)
 410                 tmp = ATA_DEVICE_OBS;
 411         else
 412                 tmp = ATA_DEVICE_OBS | ATA_DEV1;
 413
 414         out_be32(ap->ioaddr.device_addr, tmp);
 415         ata_sff_pause(ap);
 416 }
 417
 418 /**
 419  *      scc_bmdma_setup - Set up PCI IDE BMDMA transaction
 420  *      @qc: Info associated with this ATA transaction.
 421  *
 422  *      Note: Original code is ata_bmdma_setup().
 423  */
 424
 425 static void scc_bmdma_setup (struct ata_queued_cmd *qc)
 426 {
 427         struct ata_port *ap = qc->ap;
 428         unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);
 429         u8 dmactl;
 430         void __iomem *mmio = ap->ioaddr.bmdma_addr;
 431
 432         /* load PRD table addr */
 433         out_be32(mmio + SCC_DMA_TABLE_OFS, ap->prd_dma);
 434
 435         /* specify data direction, triple-check start bit is clear */
 436         dmactl = in_be32(mmio + SCC_DMA_CMD);
 437         dmactl &= ~(ATA_DMA_WR | ATA_DMA_START);
 438         if (!rw)
 439                 dmactl |= ATA_DMA_WR;
 440         out_be32(mmio + SCC_DMA_CMD, dmactl);
 441
 442         /* issue r/w command */
 443         ap->ops->sff_exec_command(ap, &qc->tf);
 444 }
 445
 446 /**
 447  *      scc_bmdma_start - Start a PCI IDE BMDMA transaction
 448  *      @qc: Info associated with this ATA transaction.
 449  *
 450  *      Note: Original code is ata_bmdma_start().
 451  */
 452
 453 static void scc_bmdma_start (struct ata_queued_cmd *qc)
 454 {
 455         struct ata_port *ap = qc->ap;
 456         u8 dmactl;
 457         void __iomem *mmio = ap->ioaddr.bmdma_addr;
 458
 459         /* start host DMA transaction */
 460         dmactl = in_be32(mmio + SCC_DMA_CMD);
 461         out_be32(mmio + SCC_DMA_CMD, dmactl | ATA_DMA_START);
 462 }
 463
 464 /**
 465  *      scc_devchk - PATA device presence detection
 466  *      @ap: ATA channel to examine
 467  *      @device: Device to examine (starting at zero)
 468  *
 469  *      Note: Original code is ata_devchk().
 470  */
 471
 472 static unsigned int scc_devchk (struct ata_port *ap,
 473                                 unsigned int device)
 474 {
 475         struct ata_ioports *ioaddr = &ap->ioaddr;
 476         u8 nsect, lbal;
 477
 478         ap->ops->sff_dev_select(ap, device);
 479
 480         out_be32(ioaddr->nsect_addr, 0x55);
 481         out_be32(ioaddr->lbal_addr, 0xaa);
 482
 483         out_be32(ioaddr->nsect_addr, 0xaa);
 484         out_be32(ioaddr->lbal_addr, 0x55);
 485
 486         out_be32(ioaddr->nsect_addr, 0x55);
 487         out_be32(ioaddr->lbal_addr, 0xaa);
 488
 489         nsect = in_be32(ioaddr->nsect_addr);
 490         lbal = in_be32(ioaddr->lbal_addr);
 491
 492         if ((nsect == 0x55) && (lbal == 0xaa))
 493                 return 1;       /* we found a device */
 494
 495         return 0;               /* nothing found */
 496 }
 497
 498 /**
 499  *      scc_wait_after_reset - wait for devices to become ready after reset
 500  *
 501  *      Note: Original code is ata_sff_wait_after_reset
 502  */
 503
 504 int scc_wait_after_reset(struct ata_link *link, unsigned int devmask,
 505                          unsigned long deadline)
 506 {
 507         struct ata_port *ap = link->ap;
 508         struct ata_ioports *ioaddr = &ap->ioaddr;
 509         unsigned int dev0 = devmask & (1 << 0);
 510         unsigned int dev1 = devmask & (1 << 1);
 511         int rc, ret = 0;
 512
 513         /* Spec mandates ">= 2ms" before checking status.  We wait
 514          * 150ms, because that was the magic delay used for ATAPI
 515          * devices in Hale Landis's ATADRVR, for the period of time
 516          * between when the ATA command register is written, and then
 517          * status is checked.  Because waiting for "a while" before
 518          * checking status is fine, post SRST, we perform this magic
 519          * delay here as well.
 520          *
 521          * Old drivers/ide uses the 2mS rule and then waits for ready.
 522          */
 523         msleep(150);
 524
 525         /* always check readiness of the master device */
 526         rc = ata_sff_wait_ready(link, deadline);
 527         /* -ENODEV means the odd clown forgot the D7 pulldown resistor
 528          * and TF status is 0xff, bail out on it too.
 529          */
 530         if (rc)
 531                 return rc;
 532
 533         /* if device 1 was found in ata_devchk, wait for register
 534          * access briefly, then wait for BSY to clear.
 535          */
 536         if (dev1) {
 537                 int i;
 538
 539                 ap->ops->sff_dev_select(ap, 1);
 540
 541                 /* Wait for register access.  Some ATAPI devices fail
 542                  * to set nsect/lbal after reset, so don't waste too
 543                  * much time on it.  We're gonna wait for !BSY anyway.
 544                  */
 545                 for (i = 0; i < 2; i++) {
 546                         u8 nsect, lbal;
 547
 548                         nsect = in_be32(ioaddr->nsect_addr);
 549                         lbal = in_be32(ioaddr->lbal_addr);
 550                         if ((nsect == 1) && (lbal == 1))
 551                                 break;
 552                         msleep(50);     /* give drive a breather */
 553                 }
 554
 555                 rc = ata_sff_wait_ready(link, deadline);
 556                 if (rc) {
 557                         if (rc != -ENODEV)
 558                                 return rc;
 559                         ret = rc;
 560                 }
 561         }
 562
 563         /* is all this really necessary? */
 564         ap->ops->sff_dev_select(ap, 0);
 565         if (dev1)
 566                 ap->ops->sff_dev_select(ap, 1);
 567         if (dev0)
 568                 ap->ops->sff_dev_select(ap, 0);
 569
 570         return ret;
 571 }
 572
 573 /**
 574  *      scc_bus_softreset - PATA device software reset
 575  *
 576  *      Note: Original code is ata_bus_softreset().
 577  */
 578
 579 static unsigned int scc_bus_softreset(struct ata_port *ap, unsigned int devmask,
 580                                       unsigned long deadline)
 581 {
 582         struct ata_ioports *ioaddr = &ap->ioaddr;
 583
 584         DPRINTK("ata%u: bus reset via SRST\n", ap->print_id);
 585
 586         /* software reset.  causes dev0 to be selected */
 587         out_be32(ioaddr->ctl_addr, ap->ctl);
 588         udelay(20);
 589         out_be32(ioaddr->ctl_addr, ap->ctl | ATA_SRST);
 590         udelay(20);
 591         out_be32(ioaddr->ctl_addr, ap->ctl);
 592
 593         scc_wait_after_reset(&ap->link, devmask, deadline);
 594
 595         return 0;
 596 }
 597
 598 /**
 599  *      scc_softreset - reset host port via ATA SRST
 600  *      @ap: port to reset
 601  *      @classes: resulting classes of attached devices
 602  *      @deadline: deadline jiffies for the operation
 603  *
 604  *      Note: Original code is ata_sff_softreset().
 605  */
 606
 607 static int scc_softreset(struct ata_link *link, unsigned int *classes,
 608                          unsigned long deadline)
 609 {
 610         struct ata_port *ap = link->ap;
 611         unsigned int slave_possible = ap->flags & ATA_FLAG_SLAVE_POSS;
 612         unsigned int devmask = 0, err_mask;
 613         u8 err;
 614
 615         DPRINTK("ENTER\n");
 616
 617         /* determine if device 0/1 are present */
 618         if (scc_devchk(ap, 0))
 619                 devmask |= (1 << 0);
 620         if (slave_possible && scc_devchk(ap, 1))
 621                 devmask |= (1 << 1);
 622
 623         /* select device 0 again */
 624         ap->ops->sff_dev_select(ap, 0);
 625
 626         /* issue bus reset */
 627         DPRINTK("about to softreset, devmask=%x\n", devmask);
 628         err_mask = scc_bus_softreset(ap, devmask, deadline);
 629         if (err_mask) {
 630                 ata_port_printk(ap, KERN_ERR, "SRST failed (err_mask=0x%x)\n",
 631                                 err_mask);
 632                 return -EIO;
 633         }
 634
 635         /* determine by signature whether we have ATA or ATAPI devices */
 636         classes[0] = ata_sff_dev_classify(&ap->link.device[0],
 637                                           devmask & (1 << 0), &err);
 638         if (slave_possible && err != 0x81)
 639                 classes[1] = ata_sff_dev_classify(&ap->link.device[1],
 640                                                   devmask & (1 << 1), &err);
 641
 642         DPRINTK("EXIT, classes[0]=%u [1]=%u\n", classes[0], classes[1]);
 643         return 0;
 644 }
 645
 646 /**
 647  *      scc_bmdma_stop - Stop PCI IDE BMDMA transfer
 648  *      @qc: Command we are ending DMA for
 649  */
 650
 651 static void scc_bmdma_stop (struct ata_queued_cmd *qc)
 652 {
 653         struct ata_port *ap = qc->ap;
 654         void __iomem *ctrl_base = ap->host->iomap[SCC_CTRL_BAR];
 655         void __iomem *bmid_base = ap->host->iomap[SCC_BMID_BAR];
 656         u32 reg;
 657
 658         while (1) {
 659                 reg = in_be32(bmid_base + SCC_DMA_INTST);
 660
 661                 if (reg & INTSTS_SERROR) {
 662                         printk(KERN_WARNING "%s: SERROR\n", DRV_NAME);
 663                         out_be32(bmid_base + SCC_DMA_INTST, INTSTS_SERROR|INTSTS_BMSINT);
 664                         out_be32(bmid_base + SCC_DMA_CMD,
 665                                  in_be32(bmid_base + SCC_DMA_CMD) & ~ATA_DMA_START);
 666                         continue;
 667                 }
 668
 669                 if (reg & INTSTS_PRERR) {
 670                         u32 maea0, maec0;
 671                         maea0 = in_be32(ctrl_base + SCC_CTL_MAEA0);
 672                         maec0 = in_be32(ctrl_base + SCC_CTL_MAEC0);
 673                         printk(KERN_WARNING "%s: PRERR [addr:%x cmd:%x]\n", DRV_NAME, maea0, maec0);
 674                         out_be32(bmid_base + SCC_DMA_INTST, INTSTS_PRERR|INTSTS_BMSINT);
 675                         out_be32(bmid_base + SCC_DMA_CMD,
 676                                  in_be32(bmid_base + SCC_DMA_CMD) & ~ATA_DMA_START);
 677                         continue;
 678                 }
 679
 680                 if (reg & INTSTS_RERR) {
 681                         printk(KERN_WARNING "%s: Response Error\n", DRV_NAME);
 682                         out_be32(bmid_base + SCC_DMA_INTST, INTSTS_RERR|INTSTS_BMSINT);
 683                         out_be32(bmid_base + SCC_DMA_CMD,
 684                                  in_be32(bmid_base + SCC_DMA_CMD) & ~ATA_DMA_START);
 685                         continue;
 686                 }
 687
 688                 if (reg & INTSTS_ICERR) {
 689                         out_be32(bmid_base + SCC_DMA_CMD,
 690                                  in_be32(bmid_base + SCC_DMA_CMD) & ~ATA_DMA_START);
 691                         printk(KERN_WARNING "%s: Illegal Configuration\n", DRV_NAME);
 692                         out_be32(bmid_base + SCC_DMA_INTST, INTSTS_ICERR|INTSTS_BMSINT);
 693                         continue;
 694                 }
 695
 696                 if (reg & INTSTS_BMSINT) {
 697                         unsigned int classes;
 698                         unsigned long deadline = ata_deadline(jiffies, ATA_TMOUT_BOOT);
 699                         printk(KERN_WARNING "%s: Internal Bus Error\n", DRV_NAME);
 700                         out_be32(bmid_base + SCC_DMA_INTST, INTSTS_BMSINT);
 701                         /* TBD: SW reset */
 702                         scc_softreset(&ap->link, &classes, deadline);
 703                         continue;
 704                 }
 705
 706                 if (reg & INTSTS_BMHE) {
 707                         out_be32(bmid_base + SCC_DMA_INTST, INTSTS_BMHE);
 708                         continue;
 709                 }
 710
 711                 if (reg & INTSTS_ACTEINT) {
 712                         out_be32(bmid_base + SCC_DMA_INTST, INTSTS_ACTEINT);
 713                         continue;
 714                 }
 715
 716                 if (reg & INTSTS_IOIRQS) {
 717                         out_be32(bmid_base + SCC_DMA_INTST, INTSTS_IOIRQS);
 718                         continue;
 719                 }
 720                 break;
 721         }
 722
 723         /* clear start/stop bit */
 724         out_be32(bmid_base + SCC_DMA_CMD,
 725                  in_be32(bmid_base + SCC_DMA_CMD) & ~ATA_DMA_START);
 726
 727         /* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */
 728         ata_sff_dma_pause(ap);  /* dummy read */
 729 }
 730
 731 /**
 732  *      scc_bmdma_status - Read PCI IDE BMDMA status
 733  *      @ap: Port associated with this ATA transaction.
 734  */
 735
 736 static u8 scc_bmdma_status (struct ata_port *ap)
 737 {
 738         void __iomem *mmio = ap->ioaddr.bmdma_addr;
 739         u8 host_stat = in_be32(mmio + SCC_DMA_STATUS);
 740         u32 int_status = in_be32(mmio + SCC_DMA_INTST);
 741         struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
 742         static int retry = 0;
 743
 744         /* return if IOS_SS is cleared */
 745         if (!(in_be32(mmio + SCC_DMA_CMD) & ATA_DMA_START))
 746                 return host_stat;
 747
 748         /* errata A252,A308 workaround: Step4 */
 749         if ((scc_check_altstatus(ap) & ATA_ERR)
 750                                         && (int_status & INTSTS_INTRQ))
 751                 return (host_stat | ATA_DMA_INTR);
 752
 753         /* errata A308 workaround Step5 */
 754         if (int_status & INTSTS_IOIRQS) {
 755                 host_stat |= ATA_DMA_INTR;
 756
 757                 /* We don't check ATAPI DMA because it is limited to UDMA4 */
 758                 if ((qc->tf.protocol == ATA_PROT_DMA &&
 759                      qc->dev->xfer_mode > XFER_UDMA_4)) {
 760                         if (!(int_status & INTSTS_ACTEINT)) {
 761                                 printk(KERN_WARNING "ata%u: operation failed (transfer data loss)\n",
 762                                        ap->print_id);
 763                                 host_stat |= ATA_DMA_ERR;
 764                                 if (retry++)
 765                                         ap->udma_mask &= ~(1 << qc->dev->xfer_mode);
 766                         } else
 767                                 retry = 0;
 768                 }
 769         }
 770
 771         return host_stat;
 772 }
 773
 774 /**
 775  *      scc_data_xfer - Transfer data by PIO
 776  *      @dev: device for this I/O
 777  *      @buf: data buffer
 778  *      @buflen: buffer length
 779  *      @rw: read/write
 780  *
 781  *      Note: Original code is ata_sff_data_xfer().
 782  */
 783
 784 static unsigned int scc_data_xfer (struct ata_device *dev, unsigned char *buf,
 785                                    unsigned int buflen, int rw)
 786 {
 787         struct ata_port *ap = dev->link->ap;
 788         unsigned int words = buflen >> 1;
 789         unsigned int i;
 790         __le16 *buf16 = (__le16 *) buf;
 791         void __iomem *mmio = ap->ioaddr.data_addr;
 792
 793         /* Transfer multiple of 2 bytes */
 794         if (rw == READ)
 795                 for (i = 0; i < words; i++)
 796                         buf16[i] = cpu_to_le16(in_be32(mmio));
 797         else
 798                 for (i = 0; i < words; i++)
 799                         out_be32(mmio, le16_to_cpu(buf16[i]));
 800
 801         /* Transfer trailing 1 byte, if any. */
 802         if (unlikely(buflen & 0x01)) {
 803                 __le16 align_buf[1] = { 0 };
 804                 unsigned char *trailing_buf = buf + buflen - 1;
 805
 806                 if (rw == READ) {
 807                         align_buf[0] = cpu_to_le16(in_be32(mmio));
 808                         memcpy(trailing_buf, align_buf, 1);
 809                 } else {
 810                         memcpy(align_buf, trailing_buf, 1);
 811                         out_be32(mmio, le16_to_cpu(align_buf[0]));
 812                 }
 813                 words++;
 814         }
 815
 816         return words << 1;
 817 }
 818
 819 /**
 820  *      scc_irq_on - Enable interrupts on a port.
 821  *      @ap: Port on which interrupts are enabled.
 822  *
 823  *      Note: Original code is ata_sff_irq_on().
 824  */
 825
 826 static u8 scc_irq_on (struct ata_port *ap)
 827 {
 828         struct ata_ioports *ioaddr = &ap->ioaddr;
 829         u8 tmp;
 830
 831         ap->ctl &= ~ATA_NIEN;
 832         ap->last_ctl = ap->ctl;
 833
 834         out_be32(ioaddr->ctl_addr, ap->ctl);
 835         tmp = ata_wait_idle(ap);
 836
 837         ap->ops->sff_irq_clear(ap);
 838
 839         return tmp;
 840 }
 841
 842 /**
 843  *      scc_freeze - Freeze BMDMA controller port
 844  *      @ap: port to freeze
 845  *
 846  *      Note: Original code is ata_sff_freeze().
 847  */
 848
 849 static void scc_freeze (struct ata_port *ap)
 850 {
 851         struct ata_ioports *ioaddr = &ap->ioaddr;
 852
 853         ap->ctl |= ATA_NIEN;
 854         ap->last_ctl = ap->ctl;
 855
 856         out_be32(ioaddr->ctl_addr, ap->ctl);
 857
 858         /* Under certain circumstances, some controllers raise IRQ on
 859          * ATA_NIEN manipulation.  Also, many controllers fail to mask
 860          * previously pending IRQ on ATA_NIEN assertion.  Clear it.
 861          */
 862         ap->ops->sff_check_status(ap);
 863
 864         ap->ops->sff_irq_clear(ap);
 865 }
 866
 867 /**
 868  *      scc_pata_prereset - prepare for reset
 869  *      @ap: ATA port to be reset
 870  *      @deadline: deadline jiffies for the operation
 871  */
 872
 873 static int scc_pata_prereset(struct ata_link *link, unsigned long deadline)
 874 {
 875         link->ap->cbl = ATA_CBL_PATA80;
 876         return ata_sff_prereset(link, deadline);
 877 }
 878
 879 /**
 880  *      scc_postreset - standard postreset callback
 881  *      @ap: the target ata_port
 882  *      @classes: classes of attached devices
 883  *
 884  *      Note: Original code is ata_sff_postreset().
 885  */
 886
 887 static void scc_postreset(struct ata_link *link, unsigned int *classes)
 888 {
 889         struct ata_port *ap = link->ap;
 890
 891         DPRINTK("ENTER\n");
 892
 893         /* is double-select really necessary? */
 894         if (classes[0] != ATA_DEV_NONE)
 895                 ap->ops->sff_dev_select(ap, 1);
 896         if (classes[1] != ATA_DEV_NONE)
 897                 ap->ops->sff_dev_select(ap, 0);
 898
 899         /* bail out if no device is present */
 900         if (classes[0] == ATA_DEV_NONE && classes[1] == ATA_DEV_NONE) {
 901                 DPRINTK("EXIT, no device\n");
 902                 return;
 903         }
 904
 905         /* set up device control */
 906         if (ap->ioaddr.ctl_addr)
 907                 out_be32(ap->ioaddr.ctl_addr, ap->ctl);
 908
 909         DPRINTK("EXIT\n");
 910 }
 911
 912 /**
 913  *      scc_irq_clear - Clear PCI IDE BMDMA interrupt.
 914  *      @ap: Port associated with this ATA transaction.
 915  *
 916  *      Note: Original code is ata_sff_irq_clear().
 917  */
 918
 919 static void scc_irq_clear (struct ata_port *ap)
 920 {
 921         void __iomem *mmio = ap->ioaddr.bmdma_addr;
 922
 923         if (!mmio)
 924                 return;
 925
 926         out_be32(mmio + SCC_DMA_STATUS, in_be32(mmio + SCC_DMA_STATUS));
 927 }
 928
 929 /**
 930  *      scc_port_start - Set port up for dma.
 931  *      @ap: Port to initialize
 932  *
 933  *      Allocate space for PRD table using ata_port_start().
 934  *      Set PRD table address for PTERADD. (PRD Transfer End Read)
 935  */
 936
 937 static int scc_port_start (struct ata_port *ap)
 938 {
 939         void __iomem *mmio = ap->ioaddr.bmdma_addr;
 940         int rc;
 941
 942         rc = ata_port_start(ap);
 943         if (rc)
 944                 return rc;
 945
 946         out_be32(mmio + SCC_DMA_PTERADD, ap->prd_dma);
 947         return 0;
 948 }
 949
 950 /**
 951  *      scc_port_stop - Undo scc_port_start()
 952  *      @ap: Port to shut down
 953  *
 954  *      Reset PTERADD.
 955  */
 956
 957 static void scc_port_stop (struct ata_port *ap)
 958 {
 959         void __iomem *mmio = ap->ioaddr.bmdma_addr;
 960
 961         out_be32(mmio + SCC_DMA_PTERADD, 0);
 962 }
 963
 964 static struct scsi_host_template scc_sht = {
 965         ATA_BMDMA_SHT(DRV_NAME),
 966 };
 967
 968 static struct ata_port_operations scc_pata_ops = {
 969         .inherits               = &ata_bmdma_port_ops,
 970
 971         .set_piomode            = scc_set_piomode,
 972         .set_dmamode            = scc_set_dmamode,
 973         .mode_filter            = scc_mode_filter,
 974
 975         .sff_tf_load            = scc_tf_load,
 976         .sff_tf_read            = scc_tf_read,
 977         .sff_exec_command       = scc_exec_command,
 978         .sff_check_status       = scc_check_status,
 979         .sff_check_altstatus    = scc_check_altstatus,
 980         .sff_dev_select         = scc_dev_select,
 981
 982         .bmdma_setup            = scc_bmdma_setup,
 983         .bmdma_start            = scc_bmdma_start,
 984         .bmdma_stop             = scc_bmdma_stop,
 985         .bmdma_status           = scc_bmdma_status,
 986         .sff_data_xfer          = scc_data_xfer,
 987
 988         .freeze                 = scc_freeze,
 989         .prereset               = scc_pata_prereset,
 990         .softreset              = scc_softreset,
 991         .postreset              = scc_postreset,
 992         .post_internal_cmd      = scc_bmdma_stop,
 993
 994         .sff_irq_clear          = scc_irq_clear,
 995         .sff_irq_on             = scc_irq_on,
 996
 997         .port_start             = scc_port_start,
 998         .port_stop              = scc_port_stop,
 999 };
1000
1001 static struct ata_port_info scc_port_info[] = {
1002         {
1003                 .flags          = ATA_FLAG_SLAVE_POSS | ATA_FLAG_MMIO | ATA_FLAG_NO_LEGACY,
1004                 .pio_mask       = ATA_PIO4,
1005                 /* No MWDMA */
1006                 .udma_mask      = ATA_UDMA6,
1007                 .port_ops       = &scc_pata_ops,
1008         },
1009 };
1010
1011 /**
1012  *      scc_reset_controller - initialize SCC PATA controller.
1013  */
1014
1015 static int scc_reset_controller(struct ata_host *host)
1016 {
1017         void __iomem *ctrl_base = host->iomap[SCC_CTRL_BAR];
1018         void __iomem *bmid_base = host->iomap[SCC_BMID_BAR];
1019         void __iomem *cckctrl_port = ctrl_base + SCC_CTL_CCKCTRL;
1020         void __iomem *mode_port = ctrl_base + SCC_CTL_MODEREG;
1021         void __iomem *ecmode_port = ctrl_base + SCC_CTL_ECMODE;
1022         void __iomem *intmask_port = bmid_base + SCC_DMA_INTMASK;
1023         void __iomem *dmastatus_port = bmid_base + SCC_DMA_STATUS;
1024         u32 reg = 0;
1025
1026         out_be32(cckctrl_port, reg);
1027         reg |= CCKCTRL_ATACLKOEN;
1028         out_be32(cckctrl_port, reg);
1029         reg |= CCKCTRL_LCLKEN | CCKCTRL_OCLKEN;
1030         out_be32(cckctrl_port, reg);
1031         reg |= CCKCTRL_CRST;
1032         out_be32(cckctrl_port, reg);
1033
1034         for (;;) {
1035                 reg = in_be32(cckctrl_port);
1036                 if (reg & CCKCTRL_CRST)
1037                         break;
1038                 udelay(5000);
1039         }
1040
1041         reg |= CCKCTRL_ATARESET;
1042         out_be32(cckctrl_port, reg);
1043         out_be32(ecmode_port, ECMODE_VALUE);
1044         out_be32(mode_port, MODE_JCUSFEN);
1045         out_be32(intmask_port, INTMASK_MSK);
1046
1047         if (in_be32(dmastatus_port) & QCHSD_STPDIAG) {
1048                 printk(KERN_WARNING "%s: failed to detect 80c cable. (PDIAG# is high)\n", DRV_NAME);
1049                 return -EIO;
1050         }
1051
1052         return 0;
1053 }
1054
1055 /**
1056  *      scc_setup_ports - initialize ioaddr with SCC PATA port offsets.
1057  *      @ioaddr: IO address structure to be initialized
1058  *      @base: base address of BMID region
1059  */
1060
1061 static void scc_setup_ports (struct ata_ioports *ioaddr, void __iomem *base)
1062 {
1063         ioaddr->cmd_addr = base + SCC_REG_CMD_ADDR;
1064         ioaddr->altstatus_addr = ioaddr->cmd_addr + SCC_REG_ALTSTATUS;
1065         ioaddr->ctl_addr = ioaddr->cmd_addr + SCC_REG_ALTSTATUS;
1066         ioaddr->bmdma_addr = base;
1067         ioaddr->data_addr = ioaddr->cmd_addr + SCC_REG_DATA;
1068         ioaddr->error_addr = ioaddr->cmd_addr + SCC_REG_ERR;
1069         ioaddr->feature_addr = ioaddr->cmd_addr + SCC_REG_FEATURE;
1070         ioaddr->nsect_addr = ioaddr->cmd_addr + SCC_REG_NSECT;
1071         ioaddr->lbal_addr = ioaddr->cmd_addr + SCC_REG_LBAL;
1072         ioaddr->lbam_addr = ioaddr->cmd_addr + SCC_REG_LBAM;
1073         ioaddr->lbah_addr = ioaddr->cmd_addr + SCC_REG_LBAH;
1074         ioaddr->device_addr = ioaddr->cmd_addr + SCC_REG_DEVICE;
1075         ioaddr->status_addr = ioaddr->cmd_addr + SCC_REG_STATUS;
1076         ioaddr->command_addr = ioaddr->cmd_addr + SCC_REG_CMD;
1077 }
1078
1079 static int scc_host_init(struct ata_host *host)
1080 {
1081         struct pci_dev *pdev = to_pci_dev(host->dev);
1082         int rc;
1083
1084         rc = scc_reset_controller(host);
1085         if (rc)
1086                 return rc;
1087
1088         rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
1089         if (rc)
1090                 return rc;
1091         rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
1092         if (rc)
1093                 return rc;
1094
1095         scc_setup_ports(&host->ports[0]->ioaddr, host->iomap[SCC_BMID_BAR]);
1096
1097         pci_set_master(pdev);
1098
1099         return 0;
1100 }
1101
1102 /**
1103  *      scc_init_one - Register SCC PATA device with kernel services
1104  *      @pdev: PCI device to register
1105  *      @ent: Entry in scc_pci_tbl matching with @pdev
1106  *
1107  *      LOCKING:
1108  *      Inherited from PCI layer (may sleep).
1109  *
1110  *      RETURNS:
1111  *      Zero on success, or -ERRNO value.
1112  */
1113
1114 static int scc_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
1115 {
1116         static int printed_version;
1117         unsigned int board_idx = (unsigned int) ent->driver_data;
1118         const struct ata_port_info *ppi[] = { &scc_port_info[board_idx], NULL };
1119         struct ata_host *host;
1120         int rc;
1121
1122         if (!printed_version++)
1123                 dev_printk(KERN_DEBUG, &pdev->dev,
1124                            "version " DRV_VERSION "\n");
1125
1126         host = ata_host_alloc_pinfo(&pdev->dev, ppi, 1);
1127         if (!host)
1128                 return -ENOMEM;
1129
1130         rc = pcim_enable_device(pdev);
1131         if (rc)
1132                 return rc;
1133
1134         rc = pcim_iomap_regions(pdev, (1 << SCC_CTRL_BAR) | (1 << SCC_BMID_BAR), DRV_NAME);
1135         if (rc == -EBUSY)
1136                 pcim_pin_device(pdev);
1137         if (rc)
1138                 return rc;
1139         host->iomap = pcim_iomap_table(pdev);
1140
1141         ata_port_pbar_desc(host->ports[0], SCC_CTRL_BAR, -1, "ctrl");
1142         ata_port_pbar_desc(host->ports[0], SCC_BMID_BAR, -1, "bmid");
1143
1144         rc = scc_host_init(host);
1145         if (rc)
1146                 return rc;
1147
1148         return ata_host_activate(host, pdev->irq, ata_sff_interrupt,
1149                                  IRQF_SHARED, &scc_sht);
1150 }
1151
1152 static struct pci_driver scc_pci_driver = {
1153         .name                   = DRV_NAME,
1154         .id_table               = scc_pci_tbl,
1155         .probe                  = scc_init_one,
1156         .remove                 = ata_pci_remove_one,
1157 #ifdef CONFIG_PM
1158         .suspend                = ata_pci_device_suspend,
1159         .resume                 = ata_pci_device_resume,
1160 #endif
1161 };
1162
1163 static int __init scc_init (void)
1164 {
1165         int rc;
1166
1167         DPRINTK("pci_register_driver\n");
1168         rc = pci_register_driver(&scc_pci_driver);
1169         if (rc)
1170                 return rc;
1171
1172         DPRINTK("done\n");
1173         return 0;
1174 }
1175
1176 static void __exit scc_exit (void)
1177 {
1178         pci_unregister_driver(&scc_pci_driver);
1179 }
1180
1181 module_init(scc_init);
1182 module_exit(scc_exit);
1183
1184 MODULE_AUTHOR("Toshiba corp");
1185 MODULE_DESCRIPTION("SCSI low-level driver for Toshiba SCC PATA controller");
1186 MODULE_LICENSE("GPL");
1187 MODULE_DEVICE_TABLE(pci, scc_pci_tbl);
1188 MODULE_VERSION(DRV_VERSION);