/************************************************************ * * * Linux EATA SCSI PIO driver * * * * based on the CAM document CAM/89-004 rev. 2.0c, * * DPT's driver kit, some internal documents and source, * * and several other Linux scsi drivers and kernel docs. * * * * The driver currently: * * -supports all EATA-PIO boards * * -only supports DASD devices * * * * (c)1993-96 Michael Neuffer, Alfred Arnold * * neuffer@goofy.zdv.uni-mainz.de * * a.arnold@kfa-juelich.de * * * * Updated 2002 by Alan Cox <alan@redhat.com> for Linux * * 2.5.x and the newer locking and error handling * * * * This program is free software; you can redistribute it * * and/or modify it under the terms of the GNU General * * Public License as published by the Free Software * * Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * This program is distributed in the hope that it will be * * useful, but WITHOUT ANY WARRANTY; without even the * * implied warranty of MERCHANTABILITY or FITNESS FOR A * * PARTICULAR PURPOSE. See the GNU General Public License * * for more details. * * * * You should have received a copy of the GNU General * * Public License along with this kernel; if not, write to * * the Free Software Foundation, Inc., 675 Mass Ave, * * Cambridge, MA 02139, USA. * * * * For the avoidance of doubt the "preferred form" of this * * code is one which is in an open non patent encumbered * * format. Where cryptographic key signing forms part of * * the process of creating an executable the information * * including keys needed to generate an equivalently * * functional executable are deemed to be part of the * * source code are deemed to be part of the source code. * * * ************************************************************ * last change: 2002/11/02 OS: Linux 2.5.45 * ************************************************************/ #include <linux/module.h> #include <linux/kernel.h> #include <linux/string.h> #include <linux/ioport.h> #include <linux/slab.h> #include <linux/in.h> #include <linux/pci.h> #include <linux/proc_fs.h> #include <linux/interrupt.h> #include <linux/blkdev.h> #include <linux/spinlock.h> #include <linux/delay.h> #include <asm/io.h> #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_device.h> #include <scsi/scsi_host.h> #include "eata_generic.h" #include "eata_pio.h" static unsigned int ISAbases[MAXISA] = { 0x1F0, 0x170, 0x330, 0x230 }; static unsigned int ISAirqs[MAXISA] = { 14, 12, 15, 11 }; static unsigned char EISAbases[] = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }; static unsigned int registered_HBAs; static struct Scsi_Host *last_HBA; static struct Scsi_Host *first_HBA; static unsigned char reg_IRQ[16]; static unsigned char reg_IRQL[16]; static unsigned long int_counter; static unsigned long queue_counter; static struct scsi_host_template driver_template; /* * eata_proc_info * inout : decides on the direction of the dataflow and the meaning of the * variables * buffer: If inout==FALSE data is being written to it else read from it * *start: If inout==FALSE start of the valid data in the buffer * offset: If inout==FALSE offset from the beginning of the imaginary file * from which we start writing into the buffer * length: If inout==FALSE max number of bytes to be written into the buffer * else number of bytes in the buffer */ static int eata_pio_proc_info(struct Scsi_Host *shost, char *buffer, char **start, off_t offset, int length, int rw) { int len = 0; off_t begin = 0, pos = 0; if (rw) return -ENOSYS; len += sprintf(buffer+len, "EATA (Extended Attachment) PIO driver version: " "%d.%d%s\n",VER_MAJOR, VER_MINOR, VER_SUB); len += sprintf(buffer + len, "queued commands: %10ld\n" "processed interrupts:%10ld\n", queue_counter, int_counter); len += sprintf(buffer + len, "\nscsi%-2d: HBA %.10s\n", shost->host_no, SD(shost)->name); len += sprintf(buffer + len, "Firmware revision: v%s\n", SD(shost)->revision); len += sprintf(buffer + len, "IO: PIO\n"); len += sprintf(buffer + len, "Base IO : %#.4x\n", (u32) shost->base); len += sprintf(buffer + len, "Host Bus: %s\n", (SD(shost)->bustype == 'P')?"PCI ": (SD(shost)->bustype == 'E')?"EISA":"ISA "); pos = begin + len; if (pos < offset) { len = 0; begin = pos; } if (pos > offset + length) goto stop_output; stop_output: DBG(DBG_PROC, printk("2pos: %ld offset: %ld len: %d\n", pos, offset, len)); *start = buffer + (offset - begin); /* Start of wanted data */ len -= (offset - begin); /* Start slop */ if (len > length) len = length; /* Ending slop */ DBG(DBG_PROC, printk("3pos: %ld offset: %ld len: %d\n", pos, offset, len)); return len; } static int eata_pio_release(struct Scsi_Host *sh) { hostdata *hd = SD(sh); if (sh->irq && reg_IRQ[sh->irq] == 1) free_irq(sh->irq, NULL); else reg_IRQ[sh->irq]--; if (SD(sh)->channel == 0) { if (sh->io_port && sh->n_io_port) release_region(sh->io_port, sh->n_io_port); } /* At this point the PCI reference can go */ if (hd->pdev) pci_dev_put(hd->pdev); return 1; } static void IncStat(struct scsi_pointer *SCp, unsigned int Increment) { SCp->ptr += Increment; if ((SCp->this_residual -= Increment) == 0) { if ((--SCp->buffers_residual) == 0) SCp->Status = 0; else { SCp->buffer++; SCp->ptr = page_address(SCp->buffer->page) + SCp->buffer->offset; SCp->this_residual = SCp->buffer->length; } } } static irqreturn_t eata_pio_int_handler(int irq, void *dev_id); static irqreturn_t do_eata_pio_int_handler(int irq, void *dev_id) { unsigned long flags; struct Scsi_Host *dev = dev_id; irqreturn_t ret; spin_lock_irqsave(dev->host_lock, flags); ret = eata_pio_int_handler(irq, dev_id); spin_unlock_irqrestore(dev->host_lock, flags); return ret; } static irqreturn_t eata_pio_int_handler(int irq, void *dev_id) { unsigned int eata_stat = 0xfffff; struct scsi_cmnd *cmd; hostdata *hd; struct eata_ccb *cp; unsigned long base; unsigned int x, z; struct Scsi_Host *sh; unsigned short zwickel = 0; unsigned char stat, odd; irqreturn_t ret = IRQ_NONE; for (x = 1, sh = first_HBA; x <= registered_HBAs; x++, sh = SD(sh)->prev) { if (sh->irq != irq) continue; if (inb(sh->base + HA_RSTATUS) & HA_SBUSY) continue; int_counter++; ret = IRQ_HANDLED; hd = SD(sh); cp = &hd->ccb[0]; cmd = cp->cmd; base = cmd->device->host->base; do { stat = inb(base + HA_RSTATUS); if (stat & HA_SDRQ) { if (cp->DataIn) { z = 256; odd = 0; while ((cmd->SCp.Status) && ((z > 0) || (odd))) { if (odd) { *(cmd->SCp.ptr) = zwickel >> 8; IncStat(&cmd->SCp, 1); odd = 0; } x = min_t(unsigned int, z, cmd->SCp.this_residual / 2); insw(base + HA_RDATA, cmd->SCp.ptr, x); z -= x; IncStat(&cmd->SCp, 2 * x); if ((z > 0) && (cmd->SCp.this_residual == 1)) { zwickel = inw(base + HA_RDATA); *(cmd->SCp.ptr) = zwickel & 0xff; IncStat(&cmd->SCp, 1); z--; odd = 1; } } while (z > 0) { zwickel = inw(base + HA_RDATA); z--; } } else { /* cp->DataOut */ odd = 0; z = 256; while ((cmd->SCp.Status) && ((z > 0) || (odd))) { if (odd) { zwickel += *(cmd->SCp.ptr) << 8; IncStat(&cmd->SCp, 1); outw(zwickel, base + HA_RDATA); z--; odd = 0; } x = min_t(unsigned int, z, cmd->SCp.this_residual / 2); outsw(base + HA_RDATA, cmd->SCp.ptr, x); z -= x; IncStat(&cmd->SCp, 2 * x); if ((z > 0) && (cmd->SCp.this_residual == 1)) { zwickel = *(cmd->SCp.ptr); zwickel &= 0xff; IncStat(&cmd->SCp, 1); odd = 1; } } while (z > 0 || odd) { outw(zwickel, base + HA_RDATA); z--; odd = 0; } } } } while ((stat & HA_SDRQ) || ((stat & HA_SMORE) && hd->moresupport)); /* terminate handler if HBA goes busy again, i.e. transfers * more data */ if (stat & HA_SBUSY) break; /* OK, this is quite stupid, but I haven't found any correct * way to get HBA&SCSI status so far */ if (!(inb(base + HA_RSTATUS) & HA_SERROR)) { cmd->result = (DID_OK << 16); hd->devflags |= (1 << cp->cp_id); } else if (hd->devflags & (1 << cp->cp_id)) cmd->result = (DID_OK << 16) + 0x02; else cmd->result = (DID_NO_CONNECT << 16); if (cp->status == LOCKED) { cp->status = FREE; eata_stat = inb(base + HA_RSTATUS); printk(KERN_CRIT "eata_pio: int_handler, freeing locked " "queueslot\n"); return ret; } #if DBG_INTR2 if (stat != 0x50) printk(KERN_DEBUG "stat: %#.2x, result: %#.8x\n", stat, cmd->result); #endif cp->status = FREE; /* now we can release the slot */ cmd->scsi_done(cmd); } return ret; } static inline unsigned int eata_pio_send_command(unsigned long base, unsigned char command) { unsigned int loop = 50; while (inb(base + HA_RSTATUS) & HA_SBUSY) if (--loop == 0) return 1; /* Enable interrupts for HBA. It is not the best way to do it at this * place, but I hope that it doesn't interfere with the IDE driver * initialization this way */ outb(HA_CTRL_8HEADS, base + HA_CTRLREG); outb(command, base + HA_WCOMMAND); return 0; } static int eata_pio_queue(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) { unsigned int x, y; unsigned long base; hostdata *hd; struct Scsi_Host *sh; struct eata_ccb *cp; queue_counter++; hd = HD(cmd); sh = cmd->device->host; base = sh->base; /* use only slot 0, as 2001 can handle only one cmd at a time */ y = x = 0; if (hd->ccb[y].status != FREE) { DBG(DBG_QUEUE, printk(KERN_EMERG "can_queue %d, x %d, y %d\n", sh->can_queue, x, y)); #if DEBUG_EATA panic(KERN_EMERG "eata_pio: run out of queue slots cmdno:%ld " "intrno: %ld\n", queue_counter, int_counter); #else panic(KERN_EMERG "eata_pio: run out of queue slots....\n"); #endif } cp = &hd->ccb[y]; memset(cp, 0, sizeof(struct eata_ccb)); memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer)); cp->status = USED; /* claim free slot */ DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd, "eata_pio_queue pid %ld, y %d\n", cmd->serial_number, y)); cmd->scsi_done = (void *) done; if (cmd->sc_data_direction == DMA_TO_DEVICE) cp->DataOut = 1; /* Output mode */ else cp->DataIn = 0; /* Input mode */ cp->Interpret = (cmd->device->id == hd->hostid); cp->cp_datalen = cpu_to_be32(cmd->request_bufflen); cp->Auto_Req_Sen = 0; cp->cp_reqDMA = 0; cp->reqlen = 0; cp->cp_id = cmd->device->id; cp->cp_lun = cmd->device->lun; cp->cp_dispri = 0; cp->cp_identify = 1; memcpy(cp->cp_cdb, cmd->cmnd, COMMAND_SIZE(*cmd->cmnd)); cp->cp_statDMA = 0; cp->cp_viraddr = cp; cp->cmd = cmd; cmd->host_scribble = (char *) &hd->ccb[y]; if (cmd->use_sg == 0) { cmd->SCp.buffers_residual = 1; cmd->SCp.ptr = cmd->request_buffer; cmd->SCp.this_residual = cmd->request_bufflen; cmd->SCp.buffer = NULL; } else { cmd->SCp.buffer = cmd->request_buffer; cmd->SCp.buffers_residual = cmd->use_sg; cmd->SCp.ptr = page_address(cmd->SCp.buffer->page) + cmd->SCp.buffer->offset; cmd->SCp.this_residual = cmd->SCp.buffer->length; } cmd->SCp.Status = (cmd->SCp.this_residual != 0); /* TRUE as long as bytes * are to transfer */ if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) { cmd->result = DID_BUS_BUSY << 16; scmd_printk(KERN_NOTICE, cmd, "eata_pio_queue pid %ld, HBA busy, " "returning DID_BUS_BUSY, done.\n", cmd->serial_number); done(cmd); cp->status = FREE; return 0; } /* FIXME: timeout */ while (!(inb(base + HA_RSTATUS) & HA_SDRQ)) cpu_relax(); outsw(base + HA_RDATA, cp, hd->cplen); outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND); for (x = 0; x < hd->cppadlen; x++) outw(0, base + HA_RDATA); DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd, "Queued base %#.4lx pid: %ld " "slot %d irq %d\n", sh->base, cmd->serial_number, y, sh->irq)); return 0; } static int eata_pio_abort(struct scsi_cmnd *cmd) { unsigned int loop = 100; DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd, "eata_pio_abort called pid: %ld\n", cmd->serial_number)); while (inb(cmd->device->host->base + HA_RAUXSTAT) & HA_ABUSY) if (--loop == 0) { printk(KERN_WARNING "eata_pio: abort, timeout error.\n"); return FAILED; } if (CD(cmd)->status == FREE) { DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_NOT_RUNNING\n")); return FAILED; } if (CD(cmd)->status == USED) { DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_BUSY\n")); /* We want to sleep a bit more here */ return FAILED; /* SNOOZE */ } if (CD(cmd)->status == RESET) { printk(KERN_WARNING "eata_pio: abort, command reset error.\n"); return FAILED; } if (CD(cmd)->status == LOCKED) { DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio: abort, queue slot " "locked.\n")); return FAILED; } panic("eata_pio: abort: invalid slot status\n"); } static int eata_pio_host_reset(struct scsi_cmnd *cmd) { unsigned int x, limit = 0; unsigned char success = 0; struct scsi_cmnd *sp; struct Scsi_Host *host = cmd->device->host; DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd, "eata_pio_reset called pid:%ld\n", cmd->serial_number)); spin_lock_irq(host->host_lock); if (HD(cmd)->state == RESET) { printk(KERN_WARNING "eata_pio_reset: exit, already in reset.\n"); spin_unlock_irq(host->host_lock); return FAILED; } /* force all slots to be free */ for (x = 0; x < cmd->device->host->can_queue; x++) { if (HD(cmd)->ccb[x].status == FREE) continue; sp = HD(cmd)->ccb[x].cmd; HD(cmd)->ccb[x].status = RESET; printk(KERN_WARNING "eata_pio_reset: slot %d in reset, pid %ld.\n", x, sp->serial_number); if (sp == NULL) panic("eata_pio_reset: slot %d, sp==NULL.\n", x); } /* hard reset the HBA */ outb(EATA_CMD_RESET, cmd->device->host->base + HA_WCOMMAND); DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: board reset done.\n")); HD(cmd)->state = RESET; spin_unlock_irq(host->host_lock); msleep(3000); spin_lock_irq(host->host_lock); DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: interrupts disabled, " "loops %d.\n", limit)); for (x = 0; x < cmd->device->host->can_queue; x++) { /* Skip slots already set free by interrupt */ if (HD(cmd)->ccb[x].status != RESET) continue; sp = HD(cmd)->ccb[x].cmd; sp->result = DID_RESET << 16; /* This mailbox is terminated */ printk(KERN_WARNING "eata_pio_reset: reset ccb %d.\n", x); HD(cmd)->ccb[x].status = FREE; sp->scsi_done(sp); } HD(cmd)->state = 0; spin_unlock_irq(host->host_lock); if (success) { /* hmmm... */ DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, success.\n")); return SUCCESS; } else { DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, wakeup.\n")); return FAILED; } } static char *get_pio_board_data(unsigned long base, unsigned int irq, unsigned int id, unsigned long cplen, unsigned short cppadlen) { struct eata_ccb cp; static char buff[256]; int z; memset(&cp, 0, sizeof(struct eata_ccb)); memset(buff, 0, sizeof(buff)); cp.DataIn = 1; cp.Interpret = 1; /* Interpret command */ cp.cp_datalen = cpu_to_be32(254); cp.cp_dataDMA = cpu_to_be32(0); cp.cp_id = id; cp.cp_lun = 0; cp.cp_cdb[0] = INQUIRY; cp.cp_cdb[1] = 0; cp.cp_cdb[2] = 0; cp.cp_cdb[3] = 0; cp.cp_cdb[4] = 254; cp.cp_cdb[5] = 0; if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) return NULL; while (!(inb(base + HA_RSTATUS) & HA_SDRQ)) cpu_relax(); outsw(base + HA_RDATA, &cp, cplen); outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND); for (z = 0; z < cppadlen; z++) outw(0, base + HA_RDATA); while (inb(base + HA_RSTATUS) & HA_SBUSY) cpu_relax(); if (inb(base + HA_RSTATUS) & HA_SERROR) return NULL; else if (!(inb(base + HA_RSTATUS) & HA_SDRQ)) return NULL; else { insw(base + HA_RDATA, &buff, 127); while (inb(base + HA_RSTATUS) & HA_SDRQ) inw(base + HA_RDATA); return buff; } } static int get_pio_conf_PIO(unsigned long base, struct get_conf *buf) { unsigned long loop = HZ / 2; int z; unsigned short *p; if (!request_region(base, 9, "eata_pio")) return 0; memset(buf, 0, sizeof(struct get_conf)); while (inb(base + HA_RSTATUS) & HA_SBUSY) if (--loop == 0) goto fail; DBG(DBG_PIO && DBG_PROBE, printk(KERN_DEBUG "Issuing PIO READ CONFIG to HBA at %#lx\n", base)); eata_pio_send_command(base, EATA_CMD_PIO_READ_CONFIG); loop = 50; for (p = (unsigned short *) buf; (long) p <= ((long) buf + (sizeof(struct get_conf) / 2)); p++) { while (!(inb(base + HA_RSTATUS) & HA_SDRQ)) if (--loop == 0) goto fail; loop = 50; *p = inw(base + HA_RDATA); } if (inb(base + HA_RSTATUS) & HA_SERROR) { DBG(DBG_PROBE, printk("eata_dma: get_conf_PIO, error during " "transfer for HBA at %lx\n", base)); goto fail; } if (cpu_to_be32(EATA_SIGNATURE) != buf->signature) goto fail; DBG(DBG_PIO && DBG_PROBE, printk(KERN_NOTICE "EATA Controller found " "at %#4lx EATA Level: %x\n", base, (unsigned int) (buf->version))); while (inb(base + HA_RSTATUS) & HA_SDRQ) inw(base + HA_RDATA); if (!ALLOW_DMA_BOARDS) { for (z = 0; z < MAXISA; z++) if (base == ISAbases[z]) { buf->IRQ = ISAirqs[z]; break; } } return 1; fail: release_region(base, 9); return 0; } static void print_pio_config(struct get_conf *gc) { printk("Please check values: (read config data)\n"); printk("LEN: %d ver:%d OCS:%d TAR:%d TRNXFR:%d MORES:%d\n", be32_to_cpu(gc->len), gc->version, gc->OCS_enabled, gc->TAR_support, gc->TRNXFR, gc->MORE_support); printk("HAAV:%d SCSIID0:%d ID1:%d ID2:%d QUEUE:%d SG:%d SEC:%d\n", gc->HAA_valid, gc->scsi_id[3], gc->scsi_id[2], gc->scsi_id[1], be16_to_cpu(gc->queuesiz), be16_to_cpu(gc->SGsiz), gc->SECOND); printk("IRQ:%d IRQT:%d FORCADR:%d MCH:%d RIDQ:%d\n", gc->IRQ, gc->IRQ_TR, gc->FORCADR, gc->MAX_CHAN, gc->ID_qest); } static unsigned int print_selftest(unsigned int base) { unsigned char buffer[512]; #ifdef VERBOSE_SETUP int z; #endif printk("eata_pio: executing controller self test & setup...\n"); while (inb(base + HA_RSTATUS) & HA_SBUSY); outb(EATA_CMD_PIO_SETUPTEST, base + HA_WCOMMAND); do { while (inb(base + HA_RSTATUS) & HA_SBUSY) /* nothing */ ; if (inb(base + HA_RSTATUS) & HA_SDRQ) { insw(base + HA_RDATA, &buffer, 256); #ifdef VERBOSE_SETUP /* no beeps please... */ for (z = 0; z < 511 && buffer[z]; z++) if (buffer[z] != 7) printk("%c", buffer[z]); #endif } } while (inb(base + HA_RSTATUS) & (HA_SBUSY | HA_SDRQ)); return (!(inb(base + HA_RSTATUS) & HA_SERROR)); } static int register_pio_HBA(long base, struct get_conf *gc, struct pci_dev *pdev) { unsigned long size = 0; char *buff; unsigned long cplen; unsigned short cppadlen; struct Scsi_Host *sh; hostdata *hd; DBG(DBG_REGISTER, print_pio_config(gc)); if (gc->DMA_support) { printk("HBA at %#.4lx supports DMA. Please use EATA-DMA driver.\n", base); if (!ALLOW_DMA_BOARDS) return 0; } if ((buff = get_pio_board_data(base, gc->IRQ, gc->scsi_id[3], cplen = (cpu_to_be32(gc->cplen) + 1) / 2, cppadlen = (cpu_to_be16(gc->cppadlen) + 1) / 2)) == NULL) { printk("HBA at %#lx didn't react on INQUIRY. Sorry.\n", base); return 0; } if (!print_selftest(base) && !ALLOW_DMA_BOARDS) { printk("HBA at %#lx failed while performing self test & setup.\n", base); return 0; } size = sizeof(hostdata) + (sizeof(struct eata_ccb) * be16_to_cpu(gc->queuesiz)); sh = scsi_register(&driver_template, size); if (sh == NULL) return 0; if (!reg_IRQ[gc->IRQ]) { /* Interrupt already registered ? */ if (!request_irq(gc->IRQ, do_eata_pio_int_handler, IRQF_DISABLED, "EATA-PIO", sh)) { reg_IRQ[gc->IRQ]++; if (!gc->IRQ_TR) reg_IRQL[gc->IRQ] = 1; /* IRQ is edge triggered */ } else { printk("Couldn't allocate IRQ %d, Sorry.\n", gc->IRQ); return 0; } } else { /* More than one HBA on this IRQ */ if (reg_IRQL[gc->IRQ]) { printk("Can't support more than one HBA on this IRQ,\n" " if the IRQ is edge triggered. Sorry.\n"); return 0; } else reg_IRQ[gc->IRQ]++; } hd = SD(sh); memset(hd->ccb, 0, (sizeof(struct eata_ccb) * be16_to_cpu(gc->queuesiz))); memset(hd->reads, 0, sizeof(hd->reads)); strlcpy(SD(sh)->vendor, &buff[8], sizeof(SD(sh)->vendor)); strlcpy(SD(sh)->name, &buff[16], sizeof(SD(sh)->name)); SD(sh)->revision[0] = buff[32]; SD(sh)->revision[1] = buff[33]; SD(sh)->revision[2] = buff[34]; SD(sh)->revision[3] = '.'; SD(sh)->revision[4] = buff[35]; SD(sh)->revision[5] = 0; switch (be32_to_cpu(gc->len)) { case 0x1c: SD(sh)->EATA_revision = 'a'; break; case 0x1e: SD(sh)->EATA_revision = 'b'; break; case 0x22: SD(sh)->EATA_revision = 'c'; break; case 0x24: SD(sh)->EATA_revision = 'z'; default: SD(sh)->EATA_revision = '?'; } if (be32_to_cpu(gc->len) >= 0x22) { if (gc->is_PCI) hd->bustype = IS_PCI; else if (gc->is_EISA) hd->bustype = IS_EISA; else hd->bustype = IS_ISA; } else { if (buff[21] == '4') hd->bustype = IS_PCI; else if (buff[21] == '2') hd->bustype = IS_EISA; else hd->bustype = IS_ISA; } SD(sh)->cplen = cplen; SD(sh)->cppadlen = cppadlen; SD(sh)->hostid = gc->scsi_id[3]; SD(sh)->devflags = 1 << gc->scsi_id[3]; SD(sh)->moresupport = gc->MORE_support; sh->unique_id = base; sh->base = base; sh->io_port = base; sh->n_io_port = 9; sh->irq = gc->IRQ; sh->dma_channel = PIO; sh->this_id = gc->scsi_id[3]; sh->can_queue = 1; sh->cmd_per_lun = 1; sh->sg_tablesize = SG_ALL; hd->channel = 0; hd->pdev = pci_dev_get(pdev); /* Keep a PCI reference */ sh->max_id = 8; sh->max_lun = 8; if (gc->SECOND) hd->primary = 0; else hd->primary = 1; sh->unchecked_isa_dma = 0; /* We can only do PIO */ hd->next = NULL; /* build a linked list of all HBAs */ hd->prev = last_HBA; if (hd->prev != NULL) SD(hd->prev)->next = sh; last_HBA = sh; if (first_HBA == NULL) first_HBA = sh; registered_HBAs++; return (1); } static void find_pio_ISA(struct get_conf *buf) { int i; for (i = 0; i < MAXISA; i++) { if (!ISAbases[i]) continue; if (!get_pio_conf_PIO(ISAbases[i], buf)) continue; if (!register_pio_HBA(ISAbases[i], buf, NULL)) release_region(ISAbases[i], 9); else ISAbases[i] = 0; } return; } static void find_pio_EISA(struct get_conf *buf) { u32 base; int i; #ifdef CHECKPAL u8 pal1, pal2, pal3; #endif for (i = 0; i < MAXEISA; i++) { if (EISAbases[i]) { /* Still a possibility ? */ base = 0x1c88 + (i * 0x1000); #ifdef CHECKPAL pal1 = inb((u16) base - 8); pal2 = inb((u16) base - 7); pal3 = inb((u16) base - 6); if (((pal1 == 0x12) && (pal2 == 0x14)) || ((pal1 == 0x38) && (pal2 == 0xa3) && (pal3 == 0x82)) || ((pal1 == 0x06) && (pal2 == 0x94) && (pal3 == 0x24))) { DBG(DBG_PROBE, printk(KERN_NOTICE "EISA EATA id tags found: " "%x %x %x \n", (int) pal1, (int) pal2, (int) pal3)); #endif if (get_pio_conf_PIO(base, buf)) { DBG(DBG_PROBE && DBG_EISA, print_pio_config(buf)); if (buf->IRQ) { if (!register_pio_HBA(base, buf, NULL)) release_region(base, 9); } else { printk(KERN_NOTICE "eata_dma: No valid IRQ. HBA " "removed from list\n"); release_region(base, 9); } } /* Nothing found here so we take it from the list */ EISAbases[i] = 0; #ifdef CHECKPAL } #endif } } return; } static void find_pio_PCI(struct get_conf *buf) { #ifndef CONFIG_PCI printk("eata_dma: kernel PCI support not enabled. Skipping scan for PCI HBAs.\n"); #else struct pci_dev *dev = NULL; unsigned long base, x; while ((dev = pci_get_device(PCI_VENDOR_ID_DPT, PCI_DEVICE_ID_DPT, dev)) != NULL) { DBG(DBG_PROBE && DBG_PCI, printk("eata_pio: find_PCI, HBA at %s\n", pci_name(dev))); if (pci_enable_device(dev)) continue; pci_set_master(dev); base = pci_resource_flags(dev, 0); if (base & IORESOURCE_MEM) { printk("eata_pio: invalid base address of device %s\n", pci_name(dev)); continue; } base = pci_resource_start(dev, 0); /* EISA tag there ? */ if ((inb(base) == 0x12) && (inb(base + 1) == 0x14)) continue; /* Jep, it's forced, so move on */ base += 0x10; /* Now, THIS is the real address */ if (base != 0x1f8) { /* We didn't find it in the primary search */ if (get_pio_conf_PIO(base, buf)) { if (buf->FORCADR) { /* If the address is forced */ release_region(base, 9); continue; /* we'll find it later */ } /* OK. We made it till here, so we can go now * and register it. We only have to check and * eventually remove it from the EISA and ISA list */ if (!register_pio_HBA(base, buf, dev)) { release_region(base, 9); continue; } if (base < 0x1000) { for (x = 0; x < MAXISA; ++x) { if (ISAbases[x] == base) { ISAbases[x] = 0; break; } } } else if ((base & 0x0fff) == 0x0c88) { x = (base >> 12) & 0x0f; EISAbases[x] = 0; } } #ifdef CHECK_BLINK else if (check_blink_state(base)) { printk("eata_pio: HBA is in BLINK state.\n" "Consult your HBAs manual to correct this.\n"); } #endif } } #endif /* #ifndef CONFIG_PCI */ } static int eata_pio_detect(struct scsi_host_template *tpnt) { struct Scsi_Host *HBA_ptr; struct get_conf gc; int i; find_pio_PCI(&gc); find_pio_EISA(&gc); find_pio_ISA(&gc); for (i = 0; i <= MAXIRQ; i++) if (reg_IRQ[i]) request_irq(i, do_eata_pio_int_handler, IRQF_DISABLED, "EATA-PIO", NULL); HBA_ptr = first_HBA; if (registered_HBAs != 0) { printk("EATA (Extended Attachment) PIO driver version: %d.%d%s\n" "(c) 1993-95 Michael Neuffer, neuffer@goofy.zdv.uni-mainz.de\n" " Alfred Arnold, a.arnold@kfa-juelich.de\n" "This release only supports DASD devices (harddisks)\n", VER_MAJOR, VER_MINOR, VER_SUB); printk("Registered HBAs:\n"); printk("HBA no. Boardtype: Revis: EATA: Bus: BaseIO: IRQ: Ch: ID: Pr:" " QS: SG: CPL:\n"); for (i = 1; i <= registered_HBAs; i++) { printk("scsi%-2d: %.10s v%s 2.0%c %s %#.4lx %2d %d %d %c" " %2d %2d %2d\n", HBA_ptr->host_no, SD(HBA_ptr)->name, SD(HBA_ptr)->revision, SD(HBA_ptr)->EATA_revision, (SD(HBA_ptr)->bustype == 'P') ? "PCI " : (SD(HBA_ptr)->bustype == 'E') ? "EISA" : "ISA ", HBA_ptr->base, HBA_ptr->irq, SD(HBA_ptr)->channel, HBA_ptr->this_id, SD(HBA_ptr)->primary ? 'Y' : 'N', HBA_ptr->can_queue, HBA_ptr->sg_tablesize, HBA_ptr->cmd_per_lun); HBA_ptr = SD(HBA_ptr)->next; } } return (registered_HBAs); } static struct scsi_host_template driver_template = { .proc_name = "eata_pio", .name = "EATA (Extended Attachment) PIO driver", .proc_info = eata_pio_proc_info, .detect = eata_pio_detect, .release = eata_pio_release, .queuecommand = eata_pio_queue, .eh_abort_handler = eata_pio_abort, .eh_host_reset_handler = eata_pio_host_reset, .use_clustering = ENABLE_CLUSTERING, }; MODULE_AUTHOR("Michael Neuffer, Alfred Arnold"); MODULE_DESCRIPTION("EATA SCSI PIO driver"); MODULE_LICENSE("GPL"); #include "scsi_module.c"