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drivers/scsi/eata_pio.c
26 KB
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/************************************************************ * * * 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 * * * |
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* Updated 2002 by Alan Cox <alan@lxorguk.ukuu.org.uk> for * * Linux 2.5.x and the newer locking and error handling * |
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* * * 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 * ************************************************************/ |
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#include <linux/module.h> #include <linux/kernel.h> |
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#include <linux/string.h> #include <linux/ioport.h> |
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#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" |
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static unsigned int ISAbases[MAXISA] = { |
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0x1F0, 0x170, 0x330, 0x230 }; |
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static unsigned int ISAirqs[MAXISA] = { |
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14, 12, 15, 11 }; static unsigned char EISAbases[] = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }; |
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static unsigned int registered_HBAs; |
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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; |
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static int eata_pio_show_info(struct seq_file *m, struct Scsi_Host *shost) |
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{ |
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seq_printf(m, "EATA (Extended Attachment) PIO driver version: " |
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"%d.%d%s ",VER_MAJOR, VER_MINOR, VER_SUB); |
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seq_printf(m, "queued commands: %10ld " |
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"processed interrupts:%10ld ", queue_counter, int_counter); |
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seq_printf(m, " scsi%-2d: HBA %.10s ", |
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shost->host_no, SD(shost)->name); |
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seq_printf(m, "Firmware revision: v%s ", |
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SD(shost)->revision); |
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seq_printf(m, "IO: PIO "); seq_printf(m, "Base IO : %#.4x ", (u32) shost->base); seq_printf(m, "Host Bus: %s ", |
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(SD(shost)->bustype == 'P')?"PCI ": (SD(shost)->bustype == 'E')?"EISA":"ISA "); |
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return 0; |
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} static int eata_pio_release(struct Scsi_Host *sh) { |
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hostdata *hd = SD(sh); |
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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); } |
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/* At this point the PCI reference can go */ if (hd->pdev) pci_dev_put(hd->pdev); |
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return 1; } |
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static void IncStat(struct scsi_pointer *SCp, unsigned int Increment) |
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{ SCp->ptr += Increment; if ((SCp->this_residual -= Increment) == 0) { if ((--SCp->buffers_residual) == 0) SCp->Status = 0; else { SCp->buffer++; |
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SCp->ptr = sg_virt(SCp->buffer); |
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SCp->this_residual = SCp->buffer->length; } } } |
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static irqreturn_t eata_pio_int_handler(int irq, void *dev_id); |
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|
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static irqreturn_t do_eata_pio_int_handler(int irq, void *dev_id) |
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{ unsigned long flags; struct Scsi_Host *dev = dev_id; |
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irqreturn_t ret; |
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spin_lock_irqsave(dev->host_lock, flags); |
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ret = eata_pio_int_handler(irq, dev_id); |
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spin_unlock_irqrestore(dev->host_lock, flags); |
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return ret; |
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} |
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static irqreturn_t eata_pio_int_handler(int irq, void *dev_id) |
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{ |
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unsigned int eata_stat = 0xfffff; |
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struct scsi_cmnd *cmd; hostdata *hd; struct eata_ccb *cp; |
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unsigned long base; unsigned int x, z; |
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struct Scsi_Host *sh; unsigned short zwickel = 0; unsigned char stat, odd; |
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irqreturn_t ret = IRQ_NONE; |
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for (x = 1, sh = first_HBA; x <= registered_HBAs; x++, sh = SD(sh)->prev) { if (sh->irq != irq) continue; |
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if (inb(sh->base + HA_RSTATUS) & HA_SBUSY) |
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continue; int_counter++; |
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ret = IRQ_HANDLED; |
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hd = SD(sh); cp = &hd->ccb[0]; cmd = cp->cmd; |
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base = cmd->device->host->base; |
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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); |
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} else if (hd->devflags & (1 << cp->cp_id)) |
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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 "); |
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return ret; |
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} #if DBG_INTR2 if (stat != 0x50) printk(KERN_DEBUG "stat: %#.2x, result: %#.8x ", stat, cmd->result); #endif cp->status = FREE; /* now we can release the slot */ cmd->scsi_done(cmd); } |
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return ret; |
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} |
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static inline unsigned int eata_pio_send_command(unsigned long base, unsigned char command) |
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{ |
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unsigned int loop = 50; |
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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; } |
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static int eata_pio_queue_lck(struct scsi_cmnd *cmd, |
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void (*done)(struct scsi_cmnd *)) { |
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unsigned int x, y; unsigned long base; |
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hostdata *hd; struct Scsi_Host *sh; struct eata_ccb *cp; queue_counter++; hd = HD(cmd); sh = cmd->device->host; |
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base = sh->base; |
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/* 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 ", sh->can_queue, x, y)); #if DEBUG_EATA panic(KERN_EMERG "eata_pio: run out of queue slots cmdno:%ld " "intrno: %ld ", queue_counter, int_counter); #else panic(KERN_EMERG "eata_pio: run out of queue slots.... "); #endif } cp = &hd->ccb[y]; memset(cp, 0, sizeof(struct eata_ccb)); |
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cp->status = USED; /* claim free slot */ |
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DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd, |
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"eata_pio_queue 0x%p, y %d ", cmd, y)); |
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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); |
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cp->cp_datalen = cpu_to_be32(scsi_bufflen(cmd)); |
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cp->Auto_Req_Sen = 0; |
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cp->cp_reqDMA = 0; |
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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)); |
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cp->cp_statDMA = 0; |
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cp->cp_viraddr = cp; cp->cmd = cmd; cmd->host_scribble = (char *) &hd->ccb[y]; |
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if (!scsi_bufflen(cmd)) { |
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cmd->SCp.buffers_residual = 1; |
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cmd->SCp.ptr = NULL; cmd->SCp.this_residual = 0; |
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cmd->SCp.buffer = NULL; } else { |
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cmd->SCp.buffer = scsi_sglist(cmd); cmd->SCp.buffers_residual = scsi_sg_count(cmd); |
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cmd->SCp.ptr = sg_virt(cmd->SCp.buffer); |
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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; |
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scmd_printk(KERN_NOTICE, cmd, |
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"eata_pio_queue pid 0x%p, HBA busy, " "returning DID_BUS_BUSY, done. ", cmd); |
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done(cmd); cp->status = FREE; |
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return 0; |
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} /* 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); |
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DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd, |
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"Queued base %#.4lx cmd: 0x%p " "slot %d irq %d ", sh->base, cmd, y, sh->irq)); |
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|
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return 0; |
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} |
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static DEF_SCSI_QCMD(eata_pio_queue) |
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static int eata_pio_abort(struct scsi_cmnd *cmd) { |
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unsigned int loop = 100; |
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DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd, |
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"eata_pio_abort called pid: 0x%p ", cmd)); |
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while (inb(cmd->device->host->base + HA_RAUXSTAT) & HA_ABUSY) if (--loop == 0) { printk(KERN_WARNING "eata_pio: abort, timeout error. "); return FAILED; } if (CD(cmd)->status == FREE) { DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_NOT_RUNNING ")); return FAILED; } if (CD(cmd)->status == USED) { DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_BUSY ")); /* 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. "); return FAILED; } if (CD(cmd)->status == LOCKED) { DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio: abort, queue slot " "locked. ")); return FAILED; } panic("eata_pio: abort: invalid slot status "); } static int eata_pio_host_reset(struct scsi_cmnd *cmd) { |
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unsigned int x, limit = 0; |
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unsigned char success = 0; struct scsi_cmnd *sp; struct Scsi_Host *host = cmd->device->host; |
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DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd, |
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"eata_pio_reset called ")); |
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spin_lock_irq(host->host_lock); |
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if (HD(cmd)->state == RESET) { printk(KERN_WARNING "eata_pio_reset: exit, already in reset. "); |
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spin_unlock_irq(host->host_lock); |
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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; |
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printk(KERN_WARNING "eata_pio_reset: slot %d in reset. ", x); |
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if (sp == NULL) panic("eata_pio_reset: slot %d, sp==NULL. ", x); } /* hard reset the HBA */ |
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outb(EATA_CMD_RESET, cmd->device->host->base + HA_WCOMMAND); |
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DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: board reset done. ")); 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. ", 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. ", x); HD(cmd)->ccb[x].status = FREE; sp->scsi_done(sp); } HD(cmd)->state = 0; |
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spin_unlock_irq(host->host_lock); |
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if (success) { /* hmmm... */ DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, success. ")); return SUCCESS; } else { DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, wakeup. ")); return FAILED; } } |
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static char *get_pio_board_data(unsigned long base, unsigned int irq, unsigned int id, unsigned long cplen, unsigned short cppadlen) |
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{ 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 */ |
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cp.cp_datalen = cpu_to_be32(254); cp.cp_dataDMA = cpu_to_be32(0); |
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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; |
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if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) |
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return NULL; while (!(inb(base + HA_RSTATUS) & HA_SDRQ)) cpu_relax(); |
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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); |
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while (inb(base + HA_RSTATUS) & HA_SBUSY) cpu_relax(); |
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if (inb(base + HA_RSTATUS) & HA_SERROR) |
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return NULL; |
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else if (!(inb(base + HA_RSTATUS) & HA_SDRQ)) |
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return NULL; |
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else { insw(base + HA_RDATA, &buff, 127); while (inb(base + HA_RSTATUS) & HA_SDRQ) inw(base + HA_RDATA); |
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return buff; |
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} } |
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static int get_pio_conf_PIO(unsigned long base, struct get_conf *buf) |
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{ 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; |
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DBG(DBG_PIO && DBG_PROBE, printk(KERN_DEBUG "Issuing PIO READ CONFIG to HBA at %#lx ", base)); |
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583 |
eata_pio_send_command(base, EATA_CMD_PIO_READ_CONFIG); |
1a68d41a3
|
584 |
loop = 50; |
1da177e4c
|
585 586 587 588 |
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; |
1a68d41a3
|
589 |
loop = 50; |
1da177e4c
|
590 591 592 593 |
*p = inw(base + HA_RDATA); } if (inb(base + HA_RSTATUS) & HA_SERROR) { DBG(DBG_PROBE, printk("eata_dma: get_conf_PIO, error during " |
1a68d41a3
|
594 595 |
"transfer for HBA at %lx ", base)); |
1da177e4c
|
596 597 |
goto fail; } |
1a68d41a3
|
598 |
if (cpu_to_be32(EATA_SIGNATURE) != buf->signature) |
1da177e4c
|
599 600 601 |
goto fail; DBG(DBG_PIO && DBG_PROBE, printk(KERN_NOTICE "EATA Controller found " |
1a68d41a3
|
602 603 604 |
"at %#4lx EATA Level: %x ", base, (unsigned int) (buf->version))); |
1da177e4c
|
605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 |
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) "); |
1a68d41a3
|
628 629 630 631 |
printk("LEN: %d ver:%d OCS:%d TAR:%d TRNXFR:%d MORES:%d ", 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 ", 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); |
1da177e4c
|
632 633 634 |
printk("IRQ:%d IRQT:%d FORCADR:%d MCH:%d RIDQ:%d ", gc->IRQ, gc->IRQ_TR, gc->FORCADR, gc->MAX_CHAN, gc->ID_qest); } |
1a68d41a3
|
635 |
static unsigned int print_selftest(unsigned int base) |
1da177e4c
|
636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 |
{ unsigned char buffer[512]; #ifdef VERBOSE_SETUP int z; #endif printk("eata_pio: executing controller self test & setup... "); 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)); } |
1a68d41a3
|
662 |
static int register_pio_HBA(long base, struct get_conf *gc, struct pci_dev *pdev) |
1da177e4c
|
663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 |
{ 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. ", base); if (!ALLOW_DMA_BOARDS) return 0; } |
1a68d41a3
|
679 680 681 |
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. ", base); |
1da177e4c
|
682 683 684 685 |
return 0; } if (!print_selftest(base) && !ALLOW_DMA_BOARDS) { |
1a68d41a3
|
686 687 |
printk("HBA at %#lx failed while performing self test & setup. ", base); |
1da177e4c
|
688 689 |
return 0; } |
1a68d41a3
|
690 |
size = sizeof(hostdata) + (sizeof(struct eata_ccb) * be16_to_cpu(gc->queuesiz)); |
1da177e4c
|
691 692 693 694 695 696 |
sh = scsi_register(&driver_template, size); if (sh == NULL) return 0; if (!reg_IRQ[gc->IRQ]) { /* Interrupt already registered ? */ |
4909cc2b8
|
697 |
if (!request_irq(gc->IRQ, do_eata_pio_int_handler, 0, "EATA-PIO", sh)) { |
1da177e4c
|
698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 |
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. ", 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, " " if the IRQ is edge triggered. Sorry. "); return 0; } else reg_IRQ[gc->IRQ]++; } hd = SD(sh); |
1a68d41a3
|
717 718 |
memset(hd->ccb, 0, (sizeof(struct eata_ccb) * be16_to_cpu(gc->queuesiz))); memset(hd->reads, 0, sizeof(hd->reads)); |
1da177e4c
|
719 720 721 722 723 724 725 726 727 |
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; |
1a68d41a3
|
728 |
switch (be32_to_cpu(gc->len)) { |
1da177e4c
|
729 730 731 732 733 734 735 736 737 738 739 740 741 742 |
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 = '?'; } |
1a68d41a3
|
743 |
if (be32_to_cpu(gc->len) >= 0x22) { |
1da177e4c
|
744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 |
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; |
1a68d41a3
|
776 |
hd->pdev = pci_dev_get(pdev); /* Keep a PCI reference */ |
1da177e4c
|
777 778 779 780 781 782 783 |
sh->max_id = 8; sh->max_lun = 8; if (gc->SECOND) hd->primary = 0; else hd->primary = 1; |
1da177e4c
|
784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 |
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; |
1a68d41a3
|
804 |
if (!register_pio_HBA(ISAbases[i], buf, NULL)) |
1da177e4c
|
805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 |
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 ", (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) { |
1a68d41a3
|
837 |
if (!register_pio_HBA(base, buf, NULL)) |
1da177e4c
|
838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 |
release_region(base, 9); } else { printk(KERN_NOTICE "eata_dma: No valid IRQ. HBA " "removed from list "); 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. "); #else struct pci_dev *dev = NULL; |
1a68d41a3
|
862 |
unsigned long base, x; |
1da177e4c
|
863 |
|
1a68d41a3
|
864 |
while ((dev = pci_get_device(PCI_VENDOR_ID_DPT, PCI_DEVICE_ID_DPT, dev)) != NULL) { |
1da177e4c
|
865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 |
DBG(DBG_PROBE && DBG_PCI, printk("eata_pio: find_PCI, HBA at %s ", 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 ", 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 */ |
1a68d41a3
|
893 |
if (!register_pio_HBA(base, buf, dev)) { |
1da177e4c
|
894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 |
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. " "Consult your HBAs manual to correct this. "); } #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); |
127be3552
|
931 |
for (i = 0; i < MAXIRQ; i++) |
1da177e4c
|
932 |
if (reg_IRQ[i]) |
4909cc2b8
|
933 |
request_irq(i, do_eata_pio_int_handler, 0, "EATA-PIO", NULL); |
1da177e4c
|
934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 |
HBA_ptr = first_HBA; if (registered_HBAs != 0) { printk("EATA (Extended Attachment) PIO driver version: %d.%d%s " "(c) 1993-95 Michael Neuffer, neuffer@goofy.zdv.uni-mainz.de " " Alfred Arnold, a.arnold@kfa-juelich.de " "This release only supports DASD devices (harddisks) ", VER_MAJOR, VER_MINOR, VER_SUB); printk("Registered HBAs: "); printk("HBA no. Boardtype: Revis: EATA: Bus: BaseIO: IRQ: Ch: ID: Pr:" " QS: SG: CPL: "); for (i = 1; i <= registered_HBAs; i++) { |
1a68d41a3
|
950 |
printk("scsi%-2d: %.10s v%s 2.0%c %s %#.4lx %2d %d %d %c" |
1da177e4c
|
951 952 953 954 955 |
" %2d %2d %2d ", 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 ", |
1a68d41a3
|
956 |
HBA_ptr->base, HBA_ptr->irq, SD(HBA_ptr)->channel, HBA_ptr->this_id, |
1da177e4c
|
957 958 959 960 961 962 963 964 965 966 967 |
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", |
8c9865445
|
968 |
.show_info = eata_pio_show_info, |
1da177e4c
|
969 970 971 972 973 974 975 976 977 978 979 980 981 |
.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" |