diff options
Diffstat (limited to 'drivers/scsi/eata_pio.c')
| -rw-r--r-- | drivers/scsi/eata_pio.c | 966 |
1 files changed, 0 insertions, 966 deletions
diff --git a/drivers/scsi/eata_pio.c b/drivers/scsi/eata_pio.c deleted file mode 100644 index 4299fa485622..000000000000 --- a/drivers/scsi/eata_pio.c +++ /dev/null @@ -1,966 +0,0 @@ -/************************************************************ - * * - * 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@lxorguk.ukuu.org.uk> 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/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; - -static int eata_pio_show_info(struct seq_file *m, struct Scsi_Host *shost) -{ - seq_printf(m, "EATA (Extended Attachment) PIO driver version: " - "%d.%d%s\n",VER_MAJOR, VER_MINOR, VER_SUB); - seq_printf(m, "queued commands: %10ld\n" - "processed interrupts:%10ld\n", queue_counter, int_counter); - seq_printf(m, "\nscsi%-2d: HBA %.10s\n", - shost->host_no, SD(shost)->name); - seq_printf(m, "Firmware revision: v%s\n", - SD(shost)->revision); - seq_puts(m, "IO: PIO\n"); - seq_printf(m, "Base IO : %#.4x\n", (u32) shost->base); - seq_printf(m, "Host Bus: %s\n", - (SD(shost)->bustype == 'P')?"PCI ": - (SD(shost)->bustype == 'E')?"EISA":"ISA "); - return 0; -} - -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 = sg_virt(SCp->buffer); - 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_lck(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)); - - cp->status = USED; /* claim free slot */ - - DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd, - "eata_pio_queue 0x%p, y %d\n", cmd, 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(scsi_bufflen(cmd)); - 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 (!scsi_bufflen(cmd)) { - cmd->SCp.buffers_residual = 1; - cmd->SCp.ptr = NULL; - cmd->SCp.this_residual = 0; - cmd->SCp.buffer = NULL; - } else { - cmd->SCp.buffer = scsi_sglist(cmd); - cmd->SCp.buffers_residual = scsi_sg_count(cmd); - cmd->SCp.ptr = sg_virt(cmd->SCp.buffer); - 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 0x%p, HBA busy, " - "returning DID_BUS_BUSY, done.\n", cmd); - 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 cmd: 0x%p " - "slot %d irq %d\n", sh->base, cmd, y, sh->irq)); - - return 0; -} - -static DEF_SCSI_QCMD(eata_pio_queue) - -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: 0x%p\n", cmd)); - - 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\n")); - - 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.\n", x); - - 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, 0, "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'; - break; - 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; - - 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, 0, "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", - .show_info = eata_pio_show_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" |