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![Michael Opdenacker](/assets/img/avatar_default.png)
It's a NOOP since 2.6.35 and it will be removed one day. [jejb: remove from missed arm scsi drivers] Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
965 lines
26 KiB
C
965 lines
26 KiB
C
/************************************************************
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* *
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* Linux EATA SCSI PIO driver *
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* *
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* based on the CAM document CAM/89-004 rev. 2.0c, *
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* DPT's driver kit, some internal documents and source, *
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* and several other Linux scsi drivers and kernel docs. *
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* *
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* The driver currently: *
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* -supports all EATA-PIO boards *
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* -only supports DASD devices *
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* *
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* (c)1993-96 Michael Neuffer, Alfred Arnold *
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* neuffer@goofy.zdv.uni-mainz.de *
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* a.arnold@kfa-juelich.de *
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* *
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* Updated 2002 by Alan Cox <alan@lxorguk.ukuu.org.uk> for *
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* Linux 2.5.x and the newer locking and error handling *
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* *
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* This program is free software; you can redistribute it *
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* and/or modify it under the terms of the GNU General *
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* Public License as published by the Free Software *
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* Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be *
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* useful, but WITHOUT ANY WARRANTY; without even the *
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* implied warranty of MERCHANTABILITY or FITNESS FOR A *
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* PARTICULAR PURPOSE. See the GNU General Public License *
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* for more details. *
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* *
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* You should have received a copy of the GNU General *
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* Public License along with this kernel; if not, write to *
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* the Free Software Foundation, Inc., 675 Mass Ave, *
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* Cambridge, MA 02139, USA. *
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* *
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* For the avoidance of doubt the "preferred form" of this *
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* code is one which is in an open non patent encumbered *
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* format. Where cryptographic key signing forms part of *
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* the process of creating an executable the information *
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* including keys needed to generate an equivalently *
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* functional executable are deemed to be part of the *
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* source code are deemed to be part of the source code. *
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* *
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************************************************************
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* last change: 2002/11/02 OS: Linux 2.5.45 *
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************************************************************/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/ioport.h>
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#include <linux/in.h>
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#include <linux/pci.h>
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#include <linux/proc_fs.h>
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#include <linux/interrupt.h>
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#include <linux/blkdev.h>
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#include <linux/spinlock.h>
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#include <linux/delay.h>
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#include <asm/io.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_host.h>
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#include "eata_generic.h"
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#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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};
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static unsigned int ISAirqs[MAXISA] = {
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14, 12, 15, 11
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};
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static unsigned char EISAbases[] = {
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1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1
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};
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static unsigned int registered_HBAs;
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static struct Scsi_Host *last_HBA;
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static struct Scsi_Host *first_HBA;
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static unsigned char reg_IRQ[16];
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static unsigned char reg_IRQL[16];
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static unsigned long int_counter;
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static unsigned long queue_counter;
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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\n",VER_MAJOR, VER_MINOR, VER_SUB);
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seq_printf(m, "queued commands: %10ld\n"
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"processed interrupts:%10ld\n", queue_counter, int_counter);
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seq_printf(m, "\nscsi%-2d: HBA %.10s\n",
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shost->host_no, SD(shost)->name);
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seq_printf(m, "Firmware revision: v%s\n",
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SD(shost)->revision);
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seq_printf(m, "IO: PIO\n");
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seq_printf(m, "Base IO : %#.4x\n", (u32) shost->base);
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seq_printf(m, "Host Bus: %s\n",
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(SD(shost)->bustype == 'P')?"PCI ":
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(SD(shost)->bustype == 'E')?"EISA":"ISA ");
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return 0;
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}
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static int eata_pio_release(struct Scsi_Host *sh)
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{
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hostdata *hd = SD(sh);
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if (sh->irq && reg_IRQ[sh->irq] == 1)
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free_irq(sh->irq, NULL);
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else
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reg_IRQ[sh->irq]--;
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if (SD(sh)->channel == 0) {
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if (sh->io_port && sh->n_io_port)
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release_region(sh->io_port, sh->n_io_port);
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}
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/* At this point the PCI reference can go */
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if (hd->pdev)
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pci_dev_put(hd->pdev);
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return 1;
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}
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static void IncStat(struct scsi_pointer *SCp, unsigned int Increment)
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{
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SCp->ptr += Increment;
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if ((SCp->this_residual -= Increment) == 0) {
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if ((--SCp->buffers_residual) == 0)
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SCp->Status = 0;
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else {
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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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}
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}
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}
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static irqreturn_t eata_pio_int_handler(int irq, void *dev_id);
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static irqreturn_t do_eata_pio_int_handler(int irq, void *dev_id)
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{
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unsigned long flags;
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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;
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hostdata *hd;
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struct eata_ccb *cp;
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unsigned long base;
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unsigned int x, z;
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struct Scsi_Host *sh;
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unsigned short zwickel = 0;
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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)
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{
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if (sh->irq != irq)
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continue;
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if (inb(sh->base + HA_RSTATUS) & HA_SBUSY)
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continue;
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int_counter++;
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ret = IRQ_HANDLED;
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hd = SD(sh);
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cp = &hd->ccb[0];
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cmd = cp->cmd;
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base = cmd->device->host->base;
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do {
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stat = inb(base + HA_RSTATUS);
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if (stat & HA_SDRQ) {
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if (cp->DataIn) {
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z = 256;
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odd = 0;
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while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
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if (odd) {
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*(cmd->SCp.ptr) = zwickel >> 8;
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IncStat(&cmd->SCp, 1);
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odd = 0;
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}
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x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
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insw(base + HA_RDATA, cmd->SCp.ptr, x);
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z -= x;
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IncStat(&cmd->SCp, 2 * x);
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if ((z > 0) && (cmd->SCp.this_residual == 1)) {
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zwickel = inw(base + HA_RDATA);
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*(cmd->SCp.ptr) = zwickel & 0xff;
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IncStat(&cmd->SCp, 1);
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z--;
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odd = 1;
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}
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}
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while (z > 0) {
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zwickel = inw(base + HA_RDATA);
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z--;
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}
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} else { /* cp->DataOut */
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odd = 0;
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z = 256;
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while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
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if (odd) {
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zwickel += *(cmd->SCp.ptr) << 8;
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IncStat(&cmd->SCp, 1);
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outw(zwickel, base + HA_RDATA);
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z--;
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odd = 0;
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}
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x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
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outsw(base + HA_RDATA, cmd->SCp.ptr, x);
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z -= x;
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IncStat(&cmd->SCp, 2 * x);
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if ((z > 0) && (cmd->SCp.this_residual == 1)) {
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zwickel = *(cmd->SCp.ptr);
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zwickel &= 0xff;
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IncStat(&cmd->SCp, 1);
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odd = 1;
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}
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}
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while (z > 0 || odd) {
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outw(zwickel, base + HA_RDATA);
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z--;
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odd = 0;
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}
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}
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}
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}
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while ((stat & HA_SDRQ) || ((stat & HA_SMORE) && hd->moresupport));
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/* terminate handler if HBA goes busy again, i.e. transfers
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* more data */
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if (stat & HA_SBUSY)
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break;
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/* OK, this is quite stupid, but I haven't found any correct
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* way to get HBA&SCSI status so far */
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if (!(inb(base + HA_RSTATUS) & HA_SERROR)) {
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cmd->result = (DID_OK << 16);
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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;
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else
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cmd->result = (DID_NO_CONNECT << 16);
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if (cp->status == LOCKED) {
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cp->status = FREE;
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eata_stat = inb(base + HA_RSTATUS);
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printk(KERN_CRIT "eata_pio: int_handler, freeing locked " "queueslot\n");
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return ret;
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}
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#if DBG_INTR2
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if (stat != 0x50)
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printk(KERN_DEBUG "stat: %#.2x, result: %#.8x\n", stat, cmd->result);
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#endif
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cp->status = FREE; /* now we can release the slot */
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cmd->scsi_done(cmd);
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}
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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)
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if (--loop == 0)
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return 1;
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/* Enable interrupts for HBA. It is not the best way to do it at this
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* place, but I hope that it doesn't interfere with the IDE driver
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* initialization this way */
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outb(HA_CTRL_8HEADS, base + HA_CTRLREG);
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outb(command, base + HA_WCOMMAND);
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return 0;
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}
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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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{
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unsigned int x, y;
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unsigned long base;
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hostdata *hd;
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struct Scsi_Host *sh;
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struct eata_ccb *cp;
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queue_counter++;
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hd = HD(cmd);
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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 */
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y = x = 0;
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if (hd->ccb[y].status != FREE) {
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DBG(DBG_QUEUE, printk(KERN_EMERG "can_queue %d, x %d, y %d\n", sh->can_queue, x, y));
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#if DEBUG_EATA
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panic(KERN_EMERG "eata_pio: run out of queue slots cmdno:%ld " "intrno: %ld\n", queue_counter, int_counter);
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#else
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panic(KERN_EMERG "eata_pio: run out of queue slots....\n");
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#endif
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}
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cp = &hd->ccb[y];
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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\n", cmd, y));
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cmd->scsi_done = (void *) done;
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if (cmd->sc_data_direction == DMA_TO_DEVICE)
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cp->DataOut = 1; /* Output mode */
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else
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cp->DataIn = 0; /* Input mode */
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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;
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cp->cp_id = cmd->device->id;
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cp->cp_lun = cmd->device->lun;
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cp->cp_dispri = 0;
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cp->cp_identify = 1;
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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;
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cp->cmd = cmd;
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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;
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cmd->SCp.this_residual = 0;
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cmd->SCp.buffer = NULL;
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} else {
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cmd->SCp.buffer = scsi_sglist(cmd);
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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;
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}
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cmd->SCp.Status = (cmd->SCp.this_residual != 0); /* TRUE as long as bytes
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* are to transfer */
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if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) {
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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, "
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"returning DID_BUS_BUSY, done.\n", cmd);
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done(cmd);
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cp->status = FREE;
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return 0;
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}
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/* FIXME: timeout */
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while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
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cpu_relax();
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outsw(base + HA_RDATA, cp, hd->cplen);
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outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
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for (x = 0; x < hd->cppadlen; x++)
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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 "
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"slot %d irq %d\n", sh->base, cmd, y, sh->irq));
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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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{
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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\n", cmd));
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while (inb(cmd->device->host->base + HA_RAUXSTAT) & HA_ABUSY)
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if (--loop == 0) {
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printk(KERN_WARNING "eata_pio: abort, timeout error.\n");
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return FAILED;
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}
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if (CD(cmd)->status == FREE) {
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DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_NOT_RUNNING\n"));
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return FAILED;
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}
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if (CD(cmd)->status == USED) {
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DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_BUSY\n"));
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/* We want to sleep a bit more here */
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return FAILED; /* SNOOZE */
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}
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if (CD(cmd)->status == RESET) {
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printk(KERN_WARNING "eata_pio: abort, command reset error.\n");
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return FAILED;
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}
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if (CD(cmd)->status == LOCKED) {
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DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio: abort, queue slot " "locked.\n"));
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return FAILED;
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}
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panic("eata_pio: abort: invalid slot status\n");
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}
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static int eata_pio_host_reset(struct scsi_cmnd *cmd)
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{
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unsigned int x, limit = 0;
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unsigned char success = 0;
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struct scsi_cmnd *sp;
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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\n"));
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spin_lock_irq(host->host_lock);
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if (HD(cmd)->state == RESET) {
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printk(KERN_WARNING "eata_pio_reset: exit, already in reset.\n");
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spin_unlock_irq(host->host_lock);
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return FAILED;
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}
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|
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/* force all slots to be free */
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for (x = 0; x < cmd->device->host->can_queue; x++) {
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|
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if (HD(cmd)->ccb[x].status == FREE)
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continue;
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sp = HD(cmd)->ccb[x].cmd;
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HD(cmd)->ccb[x].status = RESET;
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printk(KERN_WARNING "eata_pio_reset: slot %d in reset.\n", x);
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|
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if (sp == NULL)
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panic("eata_pio_reset: slot %d, sp==NULL.\n", x);
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}
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|
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/* hard reset the HBA */
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outb(EATA_CMD_RESET, cmd->device->host->base + HA_WCOMMAND);
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|
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DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: board reset done.\n"));
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HD(cmd)->state = RESET;
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|
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spin_unlock_irq(host->host_lock);
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msleep(3000);
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spin_lock_irq(host->host_lock);
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|
|
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';
|
|
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"
|