1 /* 2 * sata_qstor.c - Pacific Digital Corporation QStor SATA 3 * 4 * Maintained by: Mark Lord <mlord@pobox.com> 5 * 6 * Copyright 2005 Pacific Digital Corporation. 7 * (OSL/GPL code release authorized by Jalil Fadavi). 8 * 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2, or (at your option) 13 * any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; see the file COPYING. If not, write to 22 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 23 * 24 * 25 * libata documentation is available via 'make {ps|pdf}docs', 26 * as Documentation/DocBook/libata.* 27 * 28 */ 29 30 #include <linux/kernel.h> 31 #include <linux/module.h> 32 #include <linux/pci.h> 33 #include <linux/init.h> 34 #include <linux/blkdev.h> 35 #include <linux/delay.h> 36 #include <linux/interrupt.h> 37 #include <linux/device.h> 38 #include <scsi/scsi_host.h> 39 #include <linux/libata.h> 40 41 #define DRV_NAME "sata_qstor" 42 #define DRV_VERSION "0.08" 43 44 enum { 45 QS_MMIO_BAR = 4, 46 47 QS_PORTS = 4, 48 QS_MAX_PRD = LIBATA_MAX_PRD, 49 QS_CPB_ORDER = 6, 50 QS_CPB_BYTES = (1 << QS_CPB_ORDER), 51 QS_PRD_BYTES = QS_MAX_PRD * 16, 52 QS_PKT_BYTES = QS_CPB_BYTES + QS_PRD_BYTES, 53 54 /* global register offsets */ 55 QS_HCF_CNFG3 = 0x0003, /* host configuration offset */ 56 QS_HID_HPHY = 0x0004, /* host physical interface info */ 57 QS_HCT_CTRL = 0x00e4, /* global interrupt mask offset */ 58 QS_HST_SFF = 0x0100, /* host status fifo offset */ 59 QS_HVS_SERD3 = 0x0393, /* PHY enable offset */ 60 61 /* global control bits */ 62 QS_HPHY_64BIT = (1 << 1), /* 64-bit bus detected */ 63 QS_CNFG3_GSRST = 0x01, /* global chip reset */ 64 QS_SERD3_PHY_ENA = 0xf0, /* PHY detection ENAble*/ 65 66 /* per-channel register offsets */ 67 QS_CCF_CPBA = 0x0710, /* chan CPB base address */ 68 QS_CCF_CSEP = 0x0718, /* chan CPB separation factor */ 69 QS_CFC_HUFT = 0x0800, /* host upstream fifo threshold */ 70 QS_CFC_HDFT = 0x0804, /* host downstream fifo threshold */ 71 QS_CFC_DUFT = 0x0808, /* dev upstream fifo threshold */ 72 QS_CFC_DDFT = 0x080c, /* dev downstream fifo threshold */ 73 QS_CCT_CTR0 = 0x0900, /* chan control-0 offset */ 74 QS_CCT_CTR1 = 0x0901, /* chan control-1 offset */ 75 QS_CCT_CFF = 0x0a00, /* chan command fifo offset */ 76 77 /* channel control bits */ 78 QS_CTR0_REG = (1 << 1), /* register mode (vs. pkt mode) */ 79 QS_CTR0_CLER = (1 << 2), /* clear channel errors */ 80 QS_CTR1_RDEV = (1 << 1), /* sata phy/comms reset */ 81 QS_CTR1_RCHN = (1 << 4), /* reset channel logic */ 82 QS_CCF_RUN_PKT = 0x107, /* RUN a new dma PKT */ 83 84 /* pkt sub-field headers */ 85 QS_HCB_HDR = 0x01, /* Host Control Block header */ 86 QS_DCB_HDR = 0x02, /* Device Control Block header */ 87 88 /* pkt HCB flag bits */ 89 QS_HF_DIRO = (1 << 0), /* data DIRection Out */ 90 QS_HF_DAT = (1 << 3), /* DATa pkt */ 91 QS_HF_IEN = (1 << 4), /* Interrupt ENable */ 92 QS_HF_VLD = (1 << 5), /* VaLiD pkt */ 93 94 /* pkt DCB flag bits */ 95 QS_DF_PORD = (1 << 2), /* Pio OR Dma */ 96 QS_DF_ELBA = (1 << 3), /* Extended LBA (lba48) */ 97 98 /* PCI device IDs */ 99 board_2068_idx = 0, /* QStor 4-port SATA/RAID */ 100 }; 101 102 enum { 103 QS_DMA_BOUNDARY = ~0UL 104 }; 105 106 typedef enum { qs_state_idle, qs_state_pkt, qs_state_mmio } qs_state_t; 107 108 struct qs_port_priv { 109 u8 *pkt; 110 dma_addr_t pkt_dma; 111 qs_state_t state; 112 }; 113 114 static int qs_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val); 115 static int qs_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val); 116 static int qs_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent); 117 static int qs_port_start(struct ata_port *ap); 118 static void qs_host_stop(struct ata_host *host); 119 static void qs_phy_reset(struct ata_port *ap); 120 static void qs_qc_prep(struct ata_queued_cmd *qc); 121 static unsigned int qs_qc_issue(struct ata_queued_cmd *qc); 122 static int qs_check_atapi_dma(struct ata_queued_cmd *qc); 123 static void qs_bmdma_stop(struct ata_queued_cmd *qc); 124 static u8 qs_bmdma_status(struct ata_port *ap); 125 static void qs_irq_clear(struct ata_port *ap); 126 static void qs_eng_timeout(struct ata_port *ap); 127 128 static struct scsi_host_template qs_ata_sht = { 129 .module = THIS_MODULE, 130 .name = DRV_NAME, 131 .ioctl = ata_scsi_ioctl, 132 .queuecommand = ata_scsi_queuecmd, 133 .can_queue = ATA_DEF_QUEUE, 134 .this_id = ATA_SHT_THIS_ID, 135 .sg_tablesize = QS_MAX_PRD, 136 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, 137 .emulated = ATA_SHT_EMULATED, 138 //FIXME .use_clustering = ATA_SHT_USE_CLUSTERING, 139 .use_clustering = ENABLE_CLUSTERING, 140 .proc_name = DRV_NAME, 141 .dma_boundary = QS_DMA_BOUNDARY, 142 .slave_configure = ata_scsi_slave_config, 143 .slave_destroy = ata_scsi_slave_destroy, 144 .bios_param = ata_std_bios_param, 145 }; 146 147 static const struct ata_port_operations qs_ata_ops = { 148 .port_disable = ata_port_disable, 149 .tf_load = ata_tf_load, 150 .tf_read = ata_tf_read, 151 .check_status = ata_check_status, 152 .check_atapi_dma = qs_check_atapi_dma, 153 .exec_command = ata_exec_command, 154 .dev_select = ata_std_dev_select, 155 .phy_reset = qs_phy_reset, 156 .qc_prep = qs_qc_prep, 157 .qc_issue = qs_qc_issue, 158 .data_xfer = ata_data_xfer, 159 .eng_timeout = qs_eng_timeout, 160 .irq_clear = qs_irq_clear, 161 .irq_on = ata_irq_on, 162 .irq_ack = ata_irq_ack, 163 .scr_read = qs_scr_read, 164 .scr_write = qs_scr_write, 165 .port_start = qs_port_start, 166 .host_stop = qs_host_stop, 167 .bmdma_stop = qs_bmdma_stop, 168 .bmdma_status = qs_bmdma_status, 169 }; 170 171 static const struct ata_port_info qs_port_info[] = { 172 /* board_2068_idx */ 173 { 174 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | 175 ATA_FLAG_SATA_RESET | 176 //FIXME ATA_FLAG_SRST | 177 ATA_FLAG_MMIO | ATA_FLAG_PIO_POLLING, 178 .pio_mask = 0x10, /* pio4 */ 179 .udma_mask = ATA_UDMA6, 180 .port_ops = &qs_ata_ops, 181 }, 182 }; 183 184 static const struct pci_device_id qs_ata_pci_tbl[] = { 185 { PCI_VDEVICE(PDC, 0x2068), board_2068_idx }, 186 187 { } /* terminate list */ 188 }; 189 190 static struct pci_driver qs_ata_pci_driver = { 191 .name = DRV_NAME, 192 .id_table = qs_ata_pci_tbl, 193 .probe = qs_ata_init_one, 194 .remove = ata_pci_remove_one, 195 }; 196 197 static void __iomem *qs_mmio_base(struct ata_host *host) 198 { 199 return host->iomap[QS_MMIO_BAR]; 200 } 201 202 static int qs_check_atapi_dma(struct ata_queued_cmd *qc) 203 { 204 return 1; /* ATAPI DMA not supported */ 205 } 206 207 static void qs_bmdma_stop(struct ata_queued_cmd *qc) 208 { 209 /* nothing */ 210 } 211 212 static u8 qs_bmdma_status(struct ata_port *ap) 213 { 214 return 0; 215 } 216 217 static void qs_irq_clear(struct ata_port *ap) 218 { 219 /* nothing */ 220 } 221 222 static inline void qs_enter_reg_mode(struct ata_port *ap) 223 { 224 u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000); 225 226 writeb(QS_CTR0_REG, chan + QS_CCT_CTR0); 227 readb(chan + QS_CCT_CTR0); /* flush */ 228 } 229 230 static inline void qs_reset_channel_logic(struct ata_port *ap) 231 { 232 u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000); 233 234 writeb(QS_CTR1_RCHN, chan + QS_CCT_CTR1); 235 readb(chan + QS_CCT_CTR0); /* flush */ 236 qs_enter_reg_mode(ap); 237 } 238 239 static void qs_phy_reset(struct ata_port *ap) 240 { 241 struct qs_port_priv *pp = ap->private_data; 242 243 pp->state = qs_state_idle; 244 qs_reset_channel_logic(ap); 245 sata_phy_reset(ap); 246 } 247 248 static void qs_eng_timeout(struct ata_port *ap) 249 { 250 struct qs_port_priv *pp = ap->private_data; 251 252 if (pp->state != qs_state_idle) /* healthy paranoia */ 253 pp->state = qs_state_mmio; 254 qs_reset_channel_logic(ap); 255 ata_eng_timeout(ap); 256 } 257 258 static int qs_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val) 259 { 260 if (sc_reg > SCR_CONTROL) 261 return -EINVAL; 262 *val = readl(ap->ioaddr.scr_addr + (sc_reg * 8)); 263 return 0; 264 } 265 266 static int qs_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val) 267 { 268 if (sc_reg > SCR_CONTROL) 269 return -EINVAL; 270 writel(val, ap->ioaddr.scr_addr + (sc_reg * 8)); 271 return 0; 272 } 273 274 static unsigned int qs_fill_sg(struct ata_queued_cmd *qc) 275 { 276 struct scatterlist *sg; 277 struct ata_port *ap = qc->ap; 278 struct qs_port_priv *pp = ap->private_data; 279 unsigned int nelem; 280 u8 *prd = pp->pkt + QS_CPB_BYTES; 281 282 WARN_ON(qc->__sg == NULL); 283 WARN_ON(qc->n_elem == 0 && qc->pad_len == 0); 284 285 nelem = 0; 286 ata_for_each_sg(sg, qc) { 287 u64 addr; 288 u32 len; 289 290 addr = sg_dma_address(sg); 291 *(__le64 *)prd = cpu_to_le64(addr); 292 prd += sizeof(u64); 293 294 len = sg_dma_len(sg); 295 *(__le32 *)prd = cpu_to_le32(len); 296 prd += sizeof(u64); 297 298 VPRINTK("PRD[%u] = (0x%llX, 0x%X)\n", nelem, 299 (unsigned long long)addr, len); 300 nelem++; 301 } 302 303 return nelem; 304 } 305 306 static void qs_qc_prep(struct ata_queued_cmd *qc) 307 { 308 struct qs_port_priv *pp = qc->ap->private_data; 309 u8 dflags = QS_DF_PORD, *buf = pp->pkt; 310 u8 hflags = QS_HF_DAT | QS_HF_IEN | QS_HF_VLD; 311 u64 addr; 312 unsigned int nelem; 313 314 VPRINTK("ENTER\n"); 315 316 qs_enter_reg_mode(qc->ap); 317 if (qc->tf.protocol != ATA_PROT_DMA) { 318 ata_qc_prep(qc); 319 return; 320 } 321 322 nelem = qs_fill_sg(qc); 323 324 if ((qc->tf.flags & ATA_TFLAG_WRITE)) 325 hflags |= QS_HF_DIRO; 326 if ((qc->tf.flags & ATA_TFLAG_LBA48)) 327 dflags |= QS_DF_ELBA; 328 329 /* host control block (HCB) */ 330 buf[ 0] = QS_HCB_HDR; 331 buf[ 1] = hflags; 332 *(__le32 *)(&buf[ 4]) = cpu_to_le32(qc->nbytes); 333 *(__le32 *)(&buf[ 8]) = cpu_to_le32(nelem); 334 addr = ((u64)pp->pkt_dma) + QS_CPB_BYTES; 335 *(__le64 *)(&buf[16]) = cpu_to_le64(addr); 336 337 /* device control block (DCB) */ 338 buf[24] = QS_DCB_HDR; 339 buf[28] = dflags; 340 341 /* frame information structure (FIS) */ 342 ata_tf_to_fis(&qc->tf, 0, 1, &buf[32]); 343 } 344 345 static inline void qs_packet_start(struct ata_queued_cmd *qc) 346 { 347 struct ata_port *ap = qc->ap; 348 u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000); 349 350 VPRINTK("ENTER, ap %p\n", ap); 351 352 writeb(QS_CTR0_CLER, chan + QS_CCT_CTR0); 353 wmb(); /* flush PRDs and pkt to memory */ 354 writel(QS_CCF_RUN_PKT, chan + QS_CCT_CFF); 355 readl(chan + QS_CCT_CFF); /* flush */ 356 } 357 358 static unsigned int qs_qc_issue(struct ata_queued_cmd *qc) 359 { 360 struct qs_port_priv *pp = qc->ap->private_data; 361 362 switch (qc->tf.protocol) { 363 case ATA_PROT_DMA: 364 365 pp->state = qs_state_pkt; 366 qs_packet_start(qc); 367 return 0; 368 369 case ATA_PROT_ATAPI_DMA: 370 BUG(); 371 break; 372 373 default: 374 break; 375 } 376 377 pp->state = qs_state_mmio; 378 return ata_qc_issue_prot(qc); 379 } 380 381 static inline unsigned int qs_intr_pkt(struct ata_host *host) 382 { 383 unsigned int handled = 0; 384 u8 sFFE; 385 u8 __iomem *mmio_base = qs_mmio_base(host); 386 387 do { 388 u32 sff0 = readl(mmio_base + QS_HST_SFF); 389 u32 sff1 = readl(mmio_base + QS_HST_SFF + 4); 390 u8 sEVLD = (sff1 >> 30) & 0x01; /* valid flag */ 391 sFFE = sff1 >> 31; /* empty flag */ 392 393 if (sEVLD) { 394 u8 sDST = sff0 >> 16; /* dev status */ 395 u8 sHST = sff1 & 0x3f; /* host status */ 396 unsigned int port_no = (sff1 >> 8) & 0x03; 397 struct ata_port *ap = host->ports[port_no]; 398 399 DPRINTK("SFF=%08x%08x: sCHAN=%u sHST=%d sDST=%02x\n", 400 sff1, sff0, port_no, sHST, sDST); 401 handled = 1; 402 if (ap && !(ap->flags & ATA_FLAG_DISABLED)) { 403 struct ata_queued_cmd *qc; 404 struct qs_port_priv *pp = ap->private_data; 405 if (!pp || pp->state != qs_state_pkt) 406 continue; 407 qc = ata_qc_from_tag(ap, ap->active_tag); 408 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) { 409 switch (sHST) { 410 case 0: /* successful CPB */ 411 case 3: /* device error */ 412 pp->state = qs_state_idle; 413 qs_enter_reg_mode(qc->ap); 414 qc->err_mask |= ac_err_mask(sDST); 415 ata_qc_complete(qc); 416 break; 417 default: 418 break; 419 } 420 } 421 } 422 } 423 } while (!sFFE); 424 return handled; 425 } 426 427 static inline unsigned int qs_intr_mmio(struct ata_host *host) 428 { 429 unsigned int handled = 0, port_no; 430 431 for (port_no = 0; port_no < host->n_ports; ++port_no) { 432 struct ata_port *ap; 433 ap = host->ports[port_no]; 434 if (ap && 435 !(ap->flags & ATA_FLAG_DISABLED)) { 436 struct ata_queued_cmd *qc; 437 struct qs_port_priv *pp = ap->private_data; 438 if (!pp || pp->state != qs_state_mmio) 439 continue; 440 qc = ata_qc_from_tag(ap, ap->active_tag); 441 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) { 442 443 /* check main status, clearing INTRQ */ 444 u8 status = ata_check_status(ap); 445 if ((status & ATA_BUSY)) 446 continue; 447 DPRINTK("ata%u: protocol %d (dev_stat 0x%X)\n", 448 ap->print_id, qc->tf.protocol, status); 449 450 /* complete taskfile transaction */ 451 pp->state = qs_state_idle; 452 qc->err_mask |= ac_err_mask(status); 453 ata_qc_complete(qc); 454 handled = 1; 455 } 456 } 457 } 458 return handled; 459 } 460 461 static irqreturn_t qs_intr(int irq, void *dev_instance) 462 { 463 struct ata_host *host = dev_instance; 464 unsigned int handled = 0; 465 466 VPRINTK("ENTER\n"); 467 468 spin_lock(&host->lock); 469 handled = qs_intr_pkt(host) | qs_intr_mmio(host); 470 spin_unlock(&host->lock); 471 472 VPRINTK("EXIT\n"); 473 474 return IRQ_RETVAL(handled); 475 } 476 477 static void qs_ata_setup_port(struct ata_ioports *port, void __iomem *base) 478 { 479 port->cmd_addr = 480 port->data_addr = base + 0x400; 481 port->error_addr = 482 port->feature_addr = base + 0x408; /* hob_feature = 0x409 */ 483 port->nsect_addr = base + 0x410; /* hob_nsect = 0x411 */ 484 port->lbal_addr = base + 0x418; /* hob_lbal = 0x419 */ 485 port->lbam_addr = base + 0x420; /* hob_lbam = 0x421 */ 486 port->lbah_addr = base + 0x428; /* hob_lbah = 0x429 */ 487 port->device_addr = base + 0x430; 488 port->status_addr = 489 port->command_addr = base + 0x438; 490 port->altstatus_addr = 491 port->ctl_addr = base + 0x440; 492 port->scr_addr = base + 0xc00; 493 } 494 495 static int qs_port_start(struct ata_port *ap) 496 { 497 struct device *dev = ap->host->dev; 498 struct qs_port_priv *pp; 499 void __iomem *mmio_base = qs_mmio_base(ap->host); 500 void __iomem *chan = mmio_base + (ap->port_no * 0x4000); 501 u64 addr; 502 int rc; 503 504 rc = ata_port_start(ap); 505 if (rc) 506 return rc; 507 qs_enter_reg_mode(ap); 508 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL); 509 if (!pp) 510 return -ENOMEM; 511 pp->pkt = dmam_alloc_coherent(dev, QS_PKT_BYTES, &pp->pkt_dma, 512 GFP_KERNEL); 513 if (!pp->pkt) 514 return -ENOMEM; 515 memset(pp->pkt, 0, QS_PKT_BYTES); 516 ap->private_data = pp; 517 518 addr = (u64)pp->pkt_dma; 519 writel((u32) addr, chan + QS_CCF_CPBA); 520 writel((u32)(addr >> 32), chan + QS_CCF_CPBA + 4); 521 return 0; 522 } 523 524 static void qs_host_stop(struct ata_host *host) 525 { 526 void __iomem *mmio_base = qs_mmio_base(host); 527 528 writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */ 529 writeb(QS_CNFG3_GSRST, mmio_base + QS_HCF_CNFG3); /* global reset */ 530 } 531 532 static void qs_host_init(struct ata_host *host, unsigned int chip_id) 533 { 534 void __iomem *mmio_base = host->iomap[QS_MMIO_BAR]; 535 unsigned int port_no; 536 537 writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */ 538 writeb(QS_CNFG3_GSRST, mmio_base + QS_HCF_CNFG3); /* global reset */ 539 540 /* reset each channel in turn */ 541 for (port_no = 0; port_no < host->n_ports; ++port_no) { 542 u8 __iomem *chan = mmio_base + (port_no * 0x4000); 543 writeb(QS_CTR1_RDEV|QS_CTR1_RCHN, chan + QS_CCT_CTR1); 544 writeb(QS_CTR0_REG, chan + QS_CCT_CTR0); 545 readb(chan + QS_CCT_CTR0); /* flush */ 546 } 547 writeb(QS_SERD3_PHY_ENA, mmio_base + QS_HVS_SERD3); /* enable phy */ 548 549 for (port_no = 0; port_no < host->n_ports; ++port_no) { 550 u8 __iomem *chan = mmio_base + (port_no * 0x4000); 551 /* set FIFO depths to same settings as Windows driver */ 552 writew(32, chan + QS_CFC_HUFT); 553 writew(32, chan + QS_CFC_HDFT); 554 writew(10, chan + QS_CFC_DUFT); 555 writew( 8, chan + QS_CFC_DDFT); 556 /* set CPB size in bytes, as a power of two */ 557 writeb(QS_CPB_ORDER, chan + QS_CCF_CSEP); 558 } 559 writeb(1, mmio_base + QS_HCT_CTRL); /* enable host interrupts */ 560 } 561 562 /* 563 * The QStor understands 64-bit buses, and uses 64-bit fields 564 * for DMA pointers regardless of bus width. We just have to 565 * make sure our DMA masks are set appropriately for whatever 566 * bridge lies between us and the QStor, and then the DMA mapping 567 * code will ensure we only ever "see" appropriate buffer addresses. 568 * If we're 32-bit limited somewhere, then our 64-bit fields will 569 * just end up with zeros in the upper 32-bits, without any special 570 * logic required outside of this routine (below). 571 */ 572 static int qs_set_dma_masks(struct pci_dev *pdev, void __iomem *mmio_base) 573 { 574 u32 bus_info = readl(mmio_base + QS_HID_HPHY); 575 int rc, have_64bit_bus = (bus_info & QS_HPHY_64BIT); 576 577 if (have_64bit_bus && 578 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) { 579 rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); 580 if (rc) { 581 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); 582 if (rc) { 583 dev_printk(KERN_ERR, &pdev->dev, 584 "64-bit DMA enable failed\n"); 585 return rc; 586 } 587 } 588 } else { 589 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 590 if (rc) { 591 dev_printk(KERN_ERR, &pdev->dev, 592 "32-bit DMA enable failed\n"); 593 return rc; 594 } 595 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); 596 if (rc) { 597 dev_printk(KERN_ERR, &pdev->dev, 598 "32-bit consistent DMA enable failed\n"); 599 return rc; 600 } 601 } 602 return 0; 603 } 604 605 static int qs_ata_init_one(struct pci_dev *pdev, 606 const struct pci_device_id *ent) 607 { 608 static int printed_version; 609 unsigned int board_idx = (unsigned int) ent->driver_data; 610 const struct ata_port_info *ppi[] = { &qs_port_info[board_idx], NULL }; 611 struct ata_host *host; 612 int rc, port_no; 613 614 if (!printed_version++) 615 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); 616 617 /* alloc host */ 618 host = ata_host_alloc_pinfo(&pdev->dev, ppi, QS_PORTS); 619 if (!host) 620 return -ENOMEM; 621 622 /* acquire resources and fill host */ 623 rc = pcim_enable_device(pdev); 624 if (rc) 625 return rc; 626 627 if ((pci_resource_flags(pdev, QS_MMIO_BAR) & IORESOURCE_MEM) == 0) 628 return -ENODEV; 629 630 rc = pcim_iomap_regions(pdev, 1 << QS_MMIO_BAR, DRV_NAME); 631 if (rc) 632 return rc; 633 host->iomap = pcim_iomap_table(pdev); 634 635 rc = qs_set_dma_masks(pdev, host->iomap[QS_MMIO_BAR]); 636 if (rc) 637 return rc; 638 639 for (port_no = 0; port_no < host->n_ports; ++port_no) { 640 void __iomem *chan = 641 host->iomap[QS_MMIO_BAR] + (port_no * 0x4000); 642 qs_ata_setup_port(&host->ports[port_no]->ioaddr, chan); 643 } 644 645 /* initialize adapter */ 646 qs_host_init(host, board_idx); 647 648 pci_set_master(pdev); 649 return ata_host_activate(host, pdev->irq, qs_intr, IRQF_SHARED, 650 &qs_ata_sht); 651 } 652 653 static int __init qs_ata_init(void) 654 { 655 return pci_register_driver(&qs_ata_pci_driver); 656 } 657 658 static void __exit qs_ata_exit(void) 659 { 660 pci_unregister_driver(&qs_ata_pci_driver); 661 } 662 663 MODULE_AUTHOR("Mark Lord"); 664 MODULE_DESCRIPTION("Pacific Digital Corporation QStor SATA low-level driver"); 665 MODULE_LICENSE("GPL"); 666 MODULE_DEVICE_TABLE(pci, qs_ata_pci_tbl); 667 MODULE_VERSION(DRV_VERSION); 668 669 module_init(qs_ata_init); 670 module_exit(qs_ata_exit); 671