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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3* sym53c500_cs.c Bob Tracy (rct@frus.com)4*5* A rewrite of the pcmcia-cs add-on driver for newer (circa 1997)6* New Media Bus Toaster PCMCIA SCSI cards using the Symbios Logic7* 53c500 controller: intended for use with 2.6 and later kernels.8* The pcmcia-cs add-on version of this driver is not supported9* beyond 2.4. It consisted of three files with history/copyright10* information as follows:11*12* SYM53C500.h13* Bob Tracy (rct@frus.com)14* Original by Tom Corner (tcorner@via.at).15* Adapted from NCR53c406a.h which is Copyrighted (C) 199416* Normunds Saumanis (normunds@rx.tech.swh.lv)17*18* SYM53C500.c19* Bob Tracy (rct@frus.com)20* Original driver by Tom Corner (tcorner@via.at) was adapted21* from NCR53c406a.c which is Copyrighted (C) 1994, 1995, 1996 22* Normunds Saumanis (normunds@fi.ibm.com)23*24* sym53c500.c25* Bob Tracy (rct@frus.com)26* Original by Tom Corner (tcorner@via.at) was adapted from a27* driver for the Qlogic SCSI card written by28* David Hinds (dhinds@allegro.stanford.edu).29*/30 31#define SYM53C500_DEBUG 032#define VERBOSE_SYM53C500_DEBUG 033 34/*35* Set this to 0 if you encounter kernel lockups while transferring 36* data in PIO mode. Note this can be changed via "sysfs".37*/38#define USE_FAST_PIO 139 40/* =============== End of user configurable parameters ============== */41 42#include <linux/module.h>43#include <linux/moduleparam.h>44#include <linux/errno.h>45#include <linux/init.h>46#include <linux/interrupt.h>47#include <linux/kernel.h>48#include <linux/slab.h>49#include <linux/string.h>50#include <linux/ioport.h>51#include <linux/blkdev.h>52#include <linux/spinlock.h>53#include <linux/bitops.h>54 55#include <asm/io.h>56#include <asm/dma.h>57#include <asm/irq.h>58 59#include <scsi/scsi_ioctl.h>60#include <scsi/scsi_cmnd.h>61#include <scsi/scsi_device.h>62#include <scsi/scsi.h>63#include <scsi/scsi_host.h>64 65#include <pcmcia/cistpl.h>66#include <pcmcia/ds.h>67#include <pcmcia/ciscode.h>68 69 70/* ================================================================== */71 72#define SYNC_MODE 0 /* Synchronous transfer mode */73 74/* Default configuration */75#define C1_IMG 0x07 /* ID=7 */76#define C2_IMG 0x48 /* FE SCSI2 */77#define C3_IMG 0x20 /* CDB */78#define C4_IMG 0x04 /* ANE */79#define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */80#define C7_IMG 0x80 /* added for SYM53C500 t. corner */81 82/* Hardware Registers: offsets from io_port (base) */83 84/* Control Register Set 0 */85#define TC_LSB 0x00 /* transfer counter lsb */86#define TC_MSB 0x01 /* transfer counter msb */87#define SCSI_FIFO 0x02 /* scsi fifo register */88#define CMD_REG 0x03 /* command register */89#define STAT_REG 0x04 /* status register */90#define DEST_ID 0x04 /* selection/reselection bus id */91#define INT_REG 0x05 /* interrupt status register */92#define SRTIMOUT 0x05 /* select/reselect timeout reg */93#define SEQ_REG 0x06 /* sequence step register */94#define SYNCPRD 0x06 /* synchronous transfer period */95#define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */96#define SYNCOFF 0x07 /* synchronous offset register */97#define CONFIG1 0x08 /* configuration register */98#define CLKCONV 0x09 /* clock conversion register */99/* #define TESTREG 0x0A */ /* test mode register */100#define CONFIG2 0x0B /* configuration 2 register */101#define CONFIG3 0x0C /* configuration 3 register */102#define CONFIG4 0x0D /* configuration 4 register */103#define TC_HIGH 0x0E /* transfer counter high */104/* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */105 106/* Control Register Set 1 */107/* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */108/* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */109/* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */110#define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */111/* #define PIO_FIFO1 0x05 */ /* */112/* #define PIO_FIFO2 0x06 */ /* */113/* #define PIO_FIFO3 0x07 */ /* */114#define PIO_STATUS 0x08 /* PIO status (r/w) */115/* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */116/* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */117#define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */118#define CONFIG5 0x09 /* configuration 5 register */119/* #define SIGNATURE 0x0E */ /* signature register (r) */120/* #define CONFIG6 0x0F */ /* configuration 6 register (r) */121#define CONFIG7 0x0d122 123/* select register set 0 */124#define REG0(x) (outb(C4_IMG, (x) + CONFIG4))125/* select register set 1 */126#define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5)127 128#if SYM53C500_DEBUG129#define DEB(x) x130#else131#define DEB(x)132#endif133 134#if VERBOSE_SYM53C500_DEBUG135#define VDEB(x) x136#else137#define VDEB(x)138#endif139 140#define LOAD_DMA_COUNT(x, count) \141 outb(count & 0xff, (x) + TC_LSB); \142 outb((count >> 8) & 0xff, (x) + TC_MSB); \143 outb((count >> 16) & 0xff, (x) + TC_HIGH);144 145/* Chip commands */146#define DMA_OP 0x80147 148#define SCSI_NOP 0x00149#define FLUSH_FIFO 0x01150#define CHIP_RESET 0x02151#define SCSI_RESET 0x03152#define RESELECT 0x40153#define SELECT_NO_ATN 0x41154#define SELECT_ATN 0x42155#define SELECT_ATN_STOP 0x43156#define ENABLE_SEL 0x44157#define DISABLE_SEL 0x45158#define SELECT_ATN3 0x46159#define RESELECT3 0x47160#define TRANSFER_INFO 0x10161#define INIT_CMD_COMPLETE 0x11162#define MSG_ACCEPT 0x12163#define TRANSFER_PAD 0x18164#define SET_ATN 0x1a165#define RESET_ATN 0x1b166#define SEND_MSG 0x20167#define SEND_STATUS 0x21168#define SEND_DATA 0x22169#define DISCONN_SEQ 0x23170#define TERMINATE_SEQ 0x24171#define TARG_CMD_COMPLETE 0x25172#define DISCONN 0x27173#define RECV_MSG 0x28174#define RECV_CMD 0x29175#define RECV_DATA 0x2a176#define RECV_CMD_SEQ 0x2b177#define TARGET_ABORT_DMA 0x04178 179/* ================================================================== */180 181struct scsi_info_t {182 struct pcmcia_device *p_dev;183 struct Scsi_Host *host;184 unsigned short manf_id;185};186 187/*188* Repository for per-instance host data.189*/190struct sym53c500_data {191 struct scsi_cmnd *current_SC;192 int fast_pio;193};194 195struct sym53c500_cmd_priv {196 int status;197 int message;198 int phase;199};200 201enum Phase {202 idle,203 data_out,204 data_in,205 command_ph,206 status_ph,207 message_out,208 message_in209};210 211/* ================================================================== */212 213static void214chip_init(int io_port)215{216 REG1(io_port);217 outb(0x01, io_port + PIO_STATUS);218 outb(0x00, io_port + PIO_FLAG);219 220 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */221 outb(C3_IMG, io_port + CONFIG3);222 outb(C2_IMG, io_port + CONFIG2);223 outb(C1_IMG, io_port + CONFIG1);224 225 outb(0x05, io_port + CLKCONV); /* clock conversion factor */226 outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */227 outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */228 outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */ 229}230 231static void232SYM53C500_int_host_reset(int io_port)233{234 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */235 outb(CHIP_RESET, io_port + CMD_REG);236 outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */237 outb(SCSI_RESET, io_port + CMD_REG);238 chip_init(io_port);239}240 241static __inline__ int242SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen)243{244 int i;245 int len; /* current scsi fifo size */246 247 REG1(base);248 while (reqlen) {249 i = inb(base + PIO_STATUS);250 /* VDEB(printk("pio_status=%x\n", i)); */251 if (i & 0x80) 252 return 0;253 254 switch (i & 0x1e) {255 default:256 case 0x10: /* fifo empty */257 len = 0;258 break;259 case 0x0:260 len = 1;261 break; 262 case 0x8: /* fifo 1/3 full */263 len = 42;264 break;265 case 0xc: /* fifo 2/3 full */266 len = 84;267 break;268 case 0xe: /* fifo full */269 len = 128;270 break;271 }272 273 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */274 return 0;275 }276 277 if (len) {278 if (len > reqlen) 279 len = reqlen;280 281 if (fast_pio && len > 3) {282 insl(base + PIO_FIFO, request, len >> 2);283 request += len & 0xfc; 284 reqlen -= len & 0xfc; 285 } else {286 while (len--) {287 *request++ = inb(base + PIO_FIFO);288 reqlen--;289 }290 } 291 }292 }293 return 0;294}295 296static __inline__ int297SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen)298{299 int i = 0;300 int len; /* current scsi fifo size */301 302 REG1(base);303 while (reqlen && !(i & 0x40)) {304 i = inb(base + PIO_STATUS);305 /* VDEB(printk("pio_status=%x\n", i)); */306 if (i & 0x80) /* error */307 return 0;308 309 switch (i & 0x1e) {310 case 0x10:311 len = 128;312 break;313 case 0x0:314 len = 84;315 break;316 case 0x8:317 len = 42;318 break;319 case 0xc:320 len = 1;321 break;322 default:323 case 0xe:324 len = 0;325 break;326 }327 328 if (len) {329 if (len > reqlen)330 len = reqlen;331 332 if (fast_pio && len > 3) {333 outsl(base + PIO_FIFO, request, len >> 2);334 request += len & 0xfc;335 reqlen -= len & 0xfc;336 } else {337 while (len--) {338 outb(*request++, base + PIO_FIFO);339 reqlen--;340 }341 }342 }343 }344 return 0;345}346 347static irqreturn_t348SYM53C500_intr(int irq, void *dev_id)349{350 unsigned long flags;351 struct Scsi_Host *dev = dev_id;352 DEB(unsigned char fifo_size;)353 DEB(unsigned char seq_reg;)354 unsigned char status, int_reg;355 unsigned char pio_status;356 int port_base = dev->io_port;357 struct sym53c500_data *data =358 (struct sym53c500_data *)dev->hostdata;359 struct scsi_cmnd *curSC = data->current_SC;360 struct sym53c500_cmd_priv *scp = scsi_cmd_priv(curSC);361 int fast_pio = data->fast_pio;362 363 spin_lock_irqsave(dev->host_lock, flags);364 365 VDEB(printk("SYM53C500_intr called\n"));366 367 REG1(port_base);368 pio_status = inb(port_base + PIO_STATUS);369 REG0(port_base);370 status = inb(port_base + STAT_REG);371 DEB(seq_reg = inb(port_base + SEQ_REG));372 int_reg = inb(port_base + INT_REG);373 DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f);374 375#if SYM53C500_DEBUG376 printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x", 377 status, seq_reg, int_reg, fifo_size);378 printk(", pio=%02x\n", pio_status);379#endif /* SYM53C500_DEBUG */380 381 if (int_reg & 0x80) { /* SCSI reset intr */382 DEB(printk("SYM53C500: reset intr received\n"));383 curSC->result = DID_RESET << 16;384 goto idle_out;385 }386 387 if (pio_status & 0x80) {388 printk("SYM53C500: Warning: PIO error!\n");389 curSC->result = DID_ERROR << 16;390 goto idle_out;391 }392 393 if (status & 0x20) { /* Parity error */394 printk("SYM53C500: Warning: parity error!\n");395 curSC->result = DID_PARITY << 16;396 goto idle_out;397 }398 399 if (status & 0x40) { /* Gross error */400 printk("SYM53C500: Warning: gross error!\n");401 curSC->result = DID_ERROR << 16;402 goto idle_out;403 }404 405 if (int_reg & 0x20) { /* Disconnect */406 DEB(printk("SYM53C500: disconnect intr received\n"));407 if (scp->phase != message_in) { /* Unexpected disconnect */408 curSC->result = DID_NO_CONNECT << 16;409 } else { /* Command complete, return status and message */410 curSC->result = (scp->status & 0xff) |411 ((scp->message & 0xff) << 8) | (DID_OK << 16);412 }413 goto idle_out;414 }415 416 switch (status & 0x07) { /* scsi phase */417 case 0x00: /* DATA-OUT */418 if (int_reg & 0x10) { /* Target requesting info transfer */419 struct scatterlist *sg;420 int i;421 422 scp->phase = data_out;423 VDEB(printk("SYM53C500: Data-Out phase\n"));424 outb(FLUSH_FIFO, port_base + CMD_REG);425 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */426 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);427 428 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {429 SYM53C500_pio_write(fast_pio, port_base,430 sg_virt(sg), sg->length);431 }432 REG0(port_base);433 }434 break;435 436 case 0x01: /* DATA-IN */437 if (int_reg & 0x10) { /* Target requesting info transfer */438 struct scatterlist *sg;439 int i;440 441 scp->phase = data_in;442 VDEB(printk("SYM53C500: Data-In phase\n"));443 outb(FLUSH_FIFO, port_base + CMD_REG);444 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */445 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);446 447 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {448 SYM53C500_pio_read(fast_pio, port_base,449 sg_virt(sg), sg->length);450 }451 REG0(port_base);452 }453 break;454 455 case 0x02: /* COMMAND */456 scp->phase = command_ph;457 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n");458 break;459 460 case 0x03: /* STATUS */461 scp->phase = status_ph;462 VDEB(printk("SYM53C500: Status phase\n"));463 outb(FLUSH_FIFO, port_base + CMD_REG);464 outb(INIT_CMD_COMPLETE, port_base + CMD_REG);465 break;466 467 case 0x04: /* Reserved */468 case 0x05: /* Reserved */469 printk("SYM53C500: WARNING: Reserved phase!!!\n");470 break;471 472 case 0x06: /* MESSAGE-OUT */473 DEB(printk("SYM53C500: Message-Out phase\n"));474 scp->phase = message_out;475 outb(SET_ATN, port_base + CMD_REG); /* Reject the message */476 outb(MSG_ACCEPT, port_base + CMD_REG);477 break;478 479 case 0x07: /* MESSAGE-IN */480 VDEB(printk("SYM53C500: Message-In phase\n"));481 scp->phase = message_in;482 483 scp->status = inb(port_base + SCSI_FIFO);484 scp->message = inb(port_base + SCSI_FIFO);485 486 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f));487 DEB(printk("Status = %02x Message = %02x\n", scp->status, scp->message));488 489 if (scp->message == SAVE_POINTERS || scp->message == DISCONNECT) {490 outb(SET_ATN, port_base + CMD_REG); /* Reject message */491 DEB(printk("Discarding SAVE_POINTERS message\n"));492 }493 outb(MSG_ACCEPT, port_base + CMD_REG);494 break;495 }496out:497 spin_unlock_irqrestore(dev->host_lock, flags);498 return IRQ_HANDLED;499 500idle_out:501 scp->phase = idle;502 scsi_done(curSC);503 goto out;504}505 506static void507SYM53C500_release(struct pcmcia_device *link)508{509 struct scsi_info_t *info = link->priv;510 struct Scsi_Host *shost = info->host;511 512 dev_dbg(&link->dev, "SYM53C500_release\n");513 514 /*515 * Do this before releasing/freeing resources.516 */517 scsi_remove_host(shost);518 519 /*520 * Interrupts getting hosed on card removal. Try521 * the following code, mostly from qlogicfas.c.522 */523 if (shost->irq)524 free_irq(shost->irq, shost);525 if (shost->io_port && shost->n_io_port)526 release_region(shost->io_port, shost->n_io_port);527 528 pcmcia_disable_device(link);529 530 scsi_host_put(shost);531} /* SYM53C500_release */532 533static const char*534SYM53C500_info(struct Scsi_Host *SChost)535{536 static char info_msg[256];537 struct sym53c500_data *data =538 (struct sym53c500_data *)SChost->hostdata;539 540 DEB(printk("SYM53C500_info called\n"));541 (void)snprintf(info_msg, sizeof(info_msg),542 "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.", 543 SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow");544 return (info_msg);545}546 547static int SYM53C500_queue_lck(struct scsi_cmnd *SCpnt)548{549 struct sym53c500_cmd_priv *scp = scsi_cmd_priv(SCpnt);550 int i;551 int port_base = SCpnt->device->host->io_port;552 struct sym53c500_data *data =553 (struct sym53c500_data *)SCpnt->device->host->hostdata;554 555 VDEB(printk("SYM53C500_queue called\n"));556 557 DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n", 558 SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id, 559 (u8)SCpnt->device->lun, scsi_bufflen(SCpnt)));560 561 VDEB(for (i = 0; i < SCpnt->cmd_len; i++)562 printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i]));563 VDEB(printk("\n"));564 565 data->current_SC = SCpnt;566 scp->phase = command_ph;567 scp->status = 0;568 scp->message = 0;569 570 /* We are locked here already by the mid layer */571 REG0(port_base);572 outb(scmd_id(SCpnt), port_base + DEST_ID); /* set destination */573 outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */574 575 for (i = 0; i < SCpnt->cmd_len; i++) {576 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO);577 }578 outb(SELECT_NO_ATN, port_base + CMD_REG);579 580 return 0;581}582 583static DEF_SCSI_QCMD(SYM53C500_queue)584 585static int 586SYM53C500_host_reset(struct scsi_cmnd *SCpnt)587{588 int port_base = SCpnt->device->host->io_port;589 590 DEB(printk("SYM53C500_host_reset called\n"));591 spin_lock_irq(SCpnt->device->host->host_lock);592 SYM53C500_int_host_reset(port_base);593 spin_unlock_irq(SCpnt->device->host->host_lock);594 595 return SUCCESS;596}597 598static int 599SYM53C500_biosparm(struct scsi_device *disk,600 struct block_device *dev,601 sector_t capacity, int *info_array)602{603 int size;604 605 DEB(printk("SYM53C500_biosparm called\n"));606 607 size = capacity;608 info_array[0] = 64; /* heads */609 info_array[1] = 32; /* sectors */610 info_array[2] = size >> 11; /* cylinders */611 if (info_array[2] > 1024) { /* big disk */612 info_array[0] = 255;613 info_array[1] = 63;614 info_array[2] = size / (255 * 63);615 }616 return 0;617}618 619static ssize_t620SYM53C500_show_pio(struct device *dev, struct device_attribute *attr,621 char *buf)622{623 struct Scsi_Host *SHp = class_to_shost(dev);624 struct sym53c500_data *data =625 (struct sym53c500_data *)SHp->hostdata;626 627 return snprintf(buf, 4, "%d\n", data->fast_pio);628}629 630static ssize_t631SYM53C500_store_pio(struct device *dev, struct device_attribute *attr,632 const char *buf, size_t count)633{634 int pio;635 struct Scsi_Host *SHp = class_to_shost(dev);636 struct sym53c500_data *data =637 (struct sym53c500_data *)SHp->hostdata;638 639 pio = simple_strtoul(buf, NULL, 0);640 if (pio == 0 || pio == 1) {641 data->fast_pio = pio;642 return count;643 }644 else645 return -EINVAL;646}647 648/*649* SCSI HBA device attributes we want to650* make available via sysfs.651*/652static struct device_attribute SYM53C500_pio_attr = {653 .attr = {654 .name = "fast_pio",655 .mode = (S_IRUGO | S_IWUSR),656 },657 .show = SYM53C500_show_pio,658 .store = SYM53C500_store_pio,659};660 661static struct attribute *SYM53C500_shost_attrs[] = {662 &SYM53C500_pio_attr.attr,663 NULL,664};665 666ATTRIBUTE_GROUPS(SYM53C500_shost);667 668/*669* scsi_host_template initializer670*/671static const struct scsi_host_template sym53c500_driver_template = {672 .module = THIS_MODULE,673 .name = "SYM53C500",674 .info = SYM53C500_info,675 .queuecommand = SYM53C500_queue,676 .eh_host_reset_handler = SYM53C500_host_reset,677 .bios_param = SYM53C500_biosparm,678 .proc_name = "SYM53C500",679 .can_queue = 1,680 .this_id = 7,681 .sg_tablesize = 32,682 .shost_groups = SYM53C500_shost_groups,683 .cmd_size = sizeof(struct sym53c500_cmd_priv),684};685 686static int SYM53C500_config_check(struct pcmcia_device *p_dev, void *priv_data)687{688 p_dev->io_lines = 10;689 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;690 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;691 692 if (p_dev->resource[0]->start == 0)693 return -ENODEV;694 695 return pcmcia_request_io(p_dev);696}697 698static int699SYM53C500_config(struct pcmcia_device *link)700{701 struct scsi_info_t *info = link->priv;702 int ret;703 int irq_level, port_base;704 struct Scsi_Host *host;705 const struct scsi_host_template *tpnt = &sym53c500_driver_template;706 struct sym53c500_data *data;707 708 dev_dbg(&link->dev, "SYM53C500_config\n");709 710 info->manf_id = link->manf_id;711 712 ret = pcmcia_loop_config(link, SYM53C500_config_check, NULL);713 if (ret)714 goto failed;715 716 if (!link->irq)717 goto failed;718 719 ret = pcmcia_enable_device(link);720 if (ret)721 goto failed;722 723 /*724 * That's the trouble with copying liberally from another driver.725 * Some things probably aren't relevant, and I suspect this entire726 * section dealing with manufacturer IDs can be scrapped. --rct727 */728 if ((info->manf_id == MANFID_MACNICA) ||729 (info->manf_id == MANFID_PIONEER) ||730 (info->manf_id == 0x0098)) {731 /* set ATAcmd */732 outb(0xb4, link->resource[0]->start + 0xd);733 outb(0x24, link->resource[0]->start + 0x9);734 outb(0x04, link->resource[0]->start + 0xd);735 }736 737 /*738 * irq_level == 0 implies tpnt->can_queue == 0, which739 * is not supported in 2.6. Thus, only irq_level > 0740 * will be allowed.741 *742 * Possible port_base values are as follows:743 *744 * 0x130, 0x230, 0x280, 0x290,745 * 0x320, 0x330, 0x340, 0x350746 */747 port_base = link->resource[0]->start;748 irq_level = link->irq;749 750 DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n",751 port_base, irq_level, USE_FAST_PIO);)752 753 chip_init(port_base);754 755 host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data));756 if (!host) {757 printk("SYM53C500: Unable to register host, giving up.\n");758 goto err_release;759 }760 761 data = (struct sym53c500_data *)host->hostdata;762 763 if (irq_level > 0) {764 if (request_irq(irq_level, SYM53C500_intr, IRQF_SHARED, "SYM53C500", host)) {765 printk("SYM53C500: unable to allocate IRQ %d\n", irq_level);766 goto err_free_scsi;767 }768 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level));769 } else if (irq_level == 0) {770 DEB(printk("SYM53C500: No interrupts detected\n"));771 goto err_free_scsi;772 } else {773 DEB(printk("SYM53C500: Shouldn't get here!\n"));774 goto err_free_scsi;775 }776 777 host->unique_id = port_base;778 host->irq = irq_level;779 host->io_port = port_base;780 host->n_io_port = 0x10;781 host->dma_channel = -1;782 783 /*784 * Note fast_pio is set to USE_FAST_PIO by785 * default, but can be changed via "sysfs".786 */787 data->fast_pio = USE_FAST_PIO;788 789 info->host = host;790 791 if (scsi_add_host(host, NULL))792 goto err_free_irq;793 794 scsi_scan_host(host);795 796 return 0;797 798err_free_irq:799 free_irq(irq_level, host);800err_free_scsi:801 scsi_host_put(host);802err_release:803 release_region(port_base, 0x10);804 printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n");805 return -ENODEV;806 807failed:808 SYM53C500_release(link);809 return -ENODEV;810} /* SYM53C500_config */811 812static int sym53c500_resume(struct pcmcia_device *link)813{814 struct scsi_info_t *info = link->priv;815 816 /* See earlier comment about manufacturer IDs. */817 if ((info->manf_id == MANFID_MACNICA) ||818 (info->manf_id == MANFID_PIONEER) ||819 (info->manf_id == 0x0098)) {820 outb(0x80, link->resource[0]->start + 0xd);821 outb(0x24, link->resource[0]->start + 0x9);822 outb(0x04, link->resource[0]->start + 0xd);823 }824 /*825 * If things don't work after a "resume",826 * this is a good place to start looking.827 */828 SYM53C500_int_host_reset(link->resource[0]->start);829 830 return 0;831}832 833static void834SYM53C500_detach(struct pcmcia_device *link)835{836 dev_dbg(&link->dev, "SYM53C500_detach\n");837 838 SYM53C500_release(link);839 840 kfree(link->priv);841 link->priv = NULL;842} /* SYM53C500_detach */843 844static int845SYM53C500_probe(struct pcmcia_device *link)846{847 struct scsi_info_t *info;848 849 dev_dbg(&link->dev, "SYM53C500_attach()\n");850 851 /* Create new SCSI device */852 info = kzalloc(sizeof(*info), GFP_KERNEL);853 if (!info)854 return -ENOMEM;855 info->p_dev = link;856 link->priv = info;857 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;858 859 return SYM53C500_config(link);860} /* SYM53C500_attach */861 862MODULE_AUTHOR("Bob Tracy <rct@frus.com>");863MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver");864MODULE_LICENSE("GPL");865 866static const struct pcmcia_device_id sym53c500_ids[] = {867 PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7),868 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8),869 PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44),870 PCMCIA_DEVICE_NULL,871};872MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids);873 874static struct pcmcia_driver sym53c500_cs_driver = {875 .owner = THIS_MODULE,876 .name = "sym53c500_cs",877 .probe = SYM53C500_probe,878 .remove = SYM53C500_detach,879 .id_table = sym53c500_ids,880 .resume = sym53c500_resume,881};882module_pcmcia_driver(sym53c500_cs_driver);883