374 lines
12 KiB
C
374 lines
12 KiB
C
/*+M*************************************************************************
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* Adaptec AIC7xxx device driver proc support for Linux.
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*
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* Copyright (c) 1995, 1996 Dean W. Gehnert
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* ----------------------------------------------------------------
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* o Modified from the EATA-DMA /proc support.
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* o Additional support for device block statistics provided by
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* Matthew Jacob.
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* o Correction of overflow by Heinz Mauelshagen
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* o Adittional corrections by Doug Ledford
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*
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* Dean W. Gehnert, deang@teleport.com, 05/01/96
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*
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* $Id: aic7xxx_proc.c,v 4.1 1997/06/97 08:23:42 deang Exp $
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*-M*************************************************************************/
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#define BLS (&aic7xxx_buffer[size])
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#define HDRB \
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" 0 - 4K 4 - 16K 16 - 64K 64 - 256K 256K - 1M 1M+"
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#ifdef PROC_DEBUG
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extern int vsprintf(char *, const char *, va_list);
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static void
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proc_debug(const char *fmt, ...)
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{
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va_list ap;
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char buf[256];
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va_start(ap, fmt);
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vsprintf(buf, fmt, ap);
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printk(buf);
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va_end(ap);
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}
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#else /* PROC_DEBUG */
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# define proc_debug(fmt, args...)
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#endif /* PROC_DEBUG */
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static int aic7xxx_buffer_size = 0;
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static char *aic7xxx_buffer = NULL;
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/*+F*************************************************************************
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* Function:
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* aic7xxx_set_info
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*
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* Description:
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* Set parameters for the driver from the /proc filesystem.
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*-F*************************************************************************/
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static int
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aic7xxx_set_info(char *buffer, int length, struct Scsi_Host *HBAptr)
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{
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proc_debug("aic7xxx_set_info(): %s\n", buffer);
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return (-ENOSYS); /* Currently this is a no-op */
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}
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/*+F*************************************************************************
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* Function:
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* aic7xxx_proc_info
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*
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* Description:
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* Return information to handle /proc support for the driver.
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*-F*************************************************************************/
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int
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aic7xxx_proc_info ( struct Scsi_Host *HBAptr, char *buffer, char **start, off_t offset, int length,
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int inout)
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{
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struct aic7xxx_host *p;
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struct aic_dev_data *aic_dev;
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struct scsi_device *sdptr;
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int size = 0;
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unsigned char i;
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unsigned char tindex;
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for(p=first_aic7xxx; p && p->host != HBAptr; p=p->next)
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;
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if (!p)
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{
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size += sprintf(buffer, "Can't find adapter for host number %d\n", HBAptr->host_no);
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if (size > length)
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{
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return (size);
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}
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else
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{
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return (length);
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}
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}
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if (inout == TRUE) /* Has data been written to the file? */
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{
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return (aic7xxx_set_info(buffer, length, HBAptr));
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}
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p = (struct aic7xxx_host *) HBAptr->hostdata;
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/*
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* It takes roughly 1K of space to hold all relevant card info, not
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* counting any proc stats, so we start out with a 1.5k buffer size and
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* if proc_stats is defined, then we sweep the stats structure to see
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* how many drives we will be printing out for and add 384 bytes per
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* device with active stats.
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*
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* Hmmmm...that 1.5k seems to keep growing as items get added so they
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* can be easily viewed for debugging purposes. So, we bumped that
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* 1.5k to 4k so we can quit having to bump it all the time.
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*/
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size = 4096;
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list_for_each_entry(aic_dev, &p->aic_devs, list)
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size += 512;
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if (aic7xxx_buffer_size != size)
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{
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if (aic7xxx_buffer != NULL)
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{
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kfree(aic7xxx_buffer);
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aic7xxx_buffer_size = 0;
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}
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aic7xxx_buffer = kmalloc(size, GFP_KERNEL);
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}
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if (aic7xxx_buffer == NULL)
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{
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size = sprintf(buffer, "AIC7xxx - kmalloc error at line %d\n",
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__LINE__);
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return size;
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}
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aic7xxx_buffer_size = size;
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size = 0;
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size += sprintf(BLS, "Adaptec AIC7xxx driver version: ");
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size += sprintf(BLS, "%s/", AIC7XXX_C_VERSION);
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size += sprintf(BLS, "%s", AIC7XXX_H_VERSION);
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size += sprintf(BLS, "\n");
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size += sprintf(BLS, "Adapter Configuration:\n");
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size += sprintf(BLS, " SCSI Adapter: %s\n",
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board_names[p->board_name_index]);
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if (p->flags & AHC_TWIN)
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size += sprintf(BLS, " Twin Channel Controller ");
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else
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{
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char *channel = "";
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char *ultra = "";
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char *wide = "Narrow ";
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if (p->flags & AHC_MULTI_CHANNEL)
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{
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channel = " Channel A";
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if (p->flags & (AHC_CHNLB|AHC_CHNLC))
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channel = (p->flags & AHC_CHNLB) ? " Channel B" : " Channel C";
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}
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if (p->features & AHC_WIDE)
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wide = "Wide ";
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if (p->features & AHC_ULTRA3)
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{
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switch(p->chip & AHC_CHIPID_MASK)
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{
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case AHC_AIC7892:
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case AHC_AIC7899:
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ultra = "Ultra-160/m LVD/SE ";
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break;
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default:
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ultra = "Ultra-3 LVD/SE ";
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break;
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}
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}
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else if (p->features & AHC_ULTRA2)
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ultra = "Ultra-2 LVD/SE ";
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else if (p->features & AHC_ULTRA)
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ultra = "Ultra ";
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size += sprintf(BLS, " %s%sController%s ",
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ultra, wide, channel);
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}
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switch(p->chip & ~AHC_CHIPID_MASK)
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{
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case AHC_VL:
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size += sprintf(BLS, "at VLB slot %d\n", p->pci_device_fn);
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break;
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case AHC_EISA:
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size += sprintf(BLS, "at EISA slot %d\n", p->pci_device_fn);
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break;
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default:
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size += sprintf(BLS, "at PCI %d/%d/%d\n", p->pci_bus,
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PCI_SLOT(p->pci_device_fn), PCI_FUNC(p->pci_device_fn));
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break;
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}
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if( !(p->maddr) )
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{
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size += sprintf(BLS, " Programmed I/O Base: %lx\n", p->base);
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}
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else
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{
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size += sprintf(BLS, " PCI MMAPed I/O Base: 0x%lx\n", p->mbase);
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}
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if( (p->chip & (AHC_VL | AHC_EISA)) )
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{
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size += sprintf(BLS, " BIOS Memory Address: 0x%08x\n", p->bios_address);
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}
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size += sprintf(BLS, " Adapter SEEPROM Config: %s\n",
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(p->flags & AHC_SEEPROM_FOUND) ? "SEEPROM found and used." :
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((p->flags & AHC_USEDEFAULTS) ? "SEEPROM not found, using defaults." :
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"SEEPROM not found, using leftover BIOS values.") );
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size += sprintf(BLS, " Adaptec SCSI BIOS: %s\n",
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(p->flags & AHC_BIOS_ENABLED) ? "Enabled" : "Disabled");
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size += sprintf(BLS, " IRQ: %d\n", HBAptr->irq);
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size += sprintf(BLS, " SCBs: Active %d, Max Active %d,\n",
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p->activescbs, p->max_activescbs);
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size += sprintf(BLS, " Allocated %d, HW %d, "
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"Page %d\n", p->scb_data->numscbs, p->scb_data->maxhscbs,
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p->scb_data->maxscbs);
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if (p->flags & AHC_EXTERNAL_SRAM)
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size += sprintf(BLS, " Using External SCB SRAM\n");
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size += sprintf(BLS, " Interrupts: %ld", p->isr_count);
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if (p->chip & AHC_EISA)
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{
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size += sprintf(BLS, " %s\n",
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(p->pause & IRQMS) ? "(Level Sensitive)" : "(Edge Triggered)");
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}
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else
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{
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size += sprintf(BLS, "\n");
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}
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size += sprintf(BLS, " BIOS Control Word: 0x%04x\n",
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p->bios_control);
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size += sprintf(BLS, " Adapter Control Word: 0x%04x\n",
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p->adapter_control);
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size += sprintf(BLS, " Extended Translation: %sabled\n",
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(p->flags & AHC_EXTEND_TRANS_A) ? "En" : "Dis");
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size += sprintf(BLS, "Disconnect Enable Flags: 0x%04x\n", p->discenable);
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if (p->features & (AHC_ULTRA | AHC_ULTRA2))
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{
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size += sprintf(BLS, " Ultra Enable Flags: 0x%04x\n", p->ultraenb);
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}
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size += sprintf(BLS, "Default Tag Queue Depth: %d\n", aic7xxx_default_queue_depth);
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size += sprintf(BLS, " Tagged Queue By Device array for aic7xxx host "
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"instance %d:\n", p->instance);
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size += sprintf(BLS, " {");
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for(i=0; i < (MAX_TARGETS - 1); i++)
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size += sprintf(BLS, "%d,",aic7xxx_tag_info[p->instance].tag_commands[i]);
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size += sprintf(BLS, "%d}\n",aic7xxx_tag_info[p->instance].tag_commands[i]);
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size += sprintf(BLS, "\n");
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size += sprintf(BLS, "Statistics:\n\n");
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list_for_each_entry(aic_dev, &p->aic_devs, list)
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{
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sdptr = aic_dev->SDptr;
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tindex = sdptr->channel << 3 | sdptr->id;
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size += sprintf(BLS, "(scsi%d:%d:%d:%d)\n",
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p->host_no, sdptr->channel, sdptr->id, sdptr->lun);
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size += sprintf(BLS, " Device using %s/%s",
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(aic_dev->cur.width == MSG_EXT_WDTR_BUS_16_BIT) ?
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"Wide" : "Narrow",
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(aic_dev->cur.offset != 0) ?
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"Sync transfers at " : "Async transfers.\n" );
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if (aic_dev->cur.offset != 0)
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{
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struct aic7xxx_syncrate *sync_rate;
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unsigned char options = aic_dev->cur.options;
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int period = aic_dev->cur.period;
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int rate = (aic_dev->cur.width ==
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MSG_EXT_WDTR_BUS_16_BIT) ? 1 : 0;
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sync_rate = aic7xxx_find_syncrate(p, &period, 0, &options);
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if (sync_rate != NULL)
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{
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size += sprintf(BLS, "%s MByte/sec, offset %d\n",
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sync_rate->rate[rate],
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aic_dev->cur.offset );
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}
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else
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{
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size += sprintf(BLS, "3.3 MByte/sec, offset %d\n",
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aic_dev->cur.offset );
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}
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}
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size += sprintf(BLS, " Transinfo settings: ");
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size += sprintf(BLS, "current(%d/%d/%d/%d), ",
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aic_dev->cur.period,
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aic_dev->cur.offset,
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aic_dev->cur.width,
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aic_dev->cur.options);
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size += sprintf(BLS, "goal(%d/%d/%d/%d), ",
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aic_dev->goal.period,
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aic_dev->goal.offset,
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aic_dev->goal.width,
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aic_dev->goal.options);
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size += sprintf(BLS, "user(%d/%d/%d/%d)\n",
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p->user[tindex].period,
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p->user[tindex].offset,
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p->user[tindex].width,
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p->user[tindex].options);
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if(sdptr->simple_tags)
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{
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size += sprintf(BLS, " Tagged Command Queueing Enabled, Ordered Tags %s, Depth %d/%d\n", sdptr->ordered_tags ? "Enabled" : "Disabled", sdptr->queue_depth, aic_dev->max_q_depth);
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}
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if(aic_dev->barrier_total)
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size += sprintf(BLS, " Total transfers %ld:\n (%ld/%ld/%ld/%ld reads/writes/REQ_BARRIER/Ordered Tags)\n",
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aic_dev->r_total+aic_dev->w_total, aic_dev->r_total, aic_dev->w_total,
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aic_dev->barrier_total, aic_dev->ordered_total);
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else
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size += sprintf(BLS, " Total transfers %ld:\n (%ld/%ld reads/writes)\n",
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aic_dev->r_total+aic_dev->w_total, aic_dev->r_total, aic_dev->w_total);
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size += sprintf(BLS, "%s\n", HDRB);
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size += sprintf(BLS, " Reads:");
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for (i = 0; i < ARRAY_SIZE(aic_dev->r_bins); i++)
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{
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size += sprintf(BLS, " %10ld", aic_dev->r_bins[i]);
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}
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size += sprintf(BLS, "\n");
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size += sprintf(BLS, " Writes:");
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for (i = 0; i < ARRAY_SIZE(aic_dev->w_bins); i++)
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{
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size += sprintf(BLS, " %10ld", aic_dev->w_bins[i]);
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}
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size += sprintf(BLS, "\n");
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size += sprintf(BLS, "\n\n");
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}
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if (size >= aic7xxx_buffer_size)
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{
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printk(KERN_WARNING "aic7xxx: Overflow in aic7xxx_proc.c\n");
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}
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if (offset > size - 1)
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{
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kfree(aic7xxx_buffer);
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aic7xxx_buffer = NULL;
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aic7xxx_buffer_size = length = 0;
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*start = NULL;
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}
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else
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{
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*start = buffer;
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length = min_t(int, length, size - offset);
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memcpy(buffer, &aic7xxx_buffer[offset], length);
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}
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return (length);
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}
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/*
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* Overrides for Emacs so that we follow Linus's tabbing style.
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* Emacs will notice this stuff at the end of the file and automatically
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* adjust the settings for this buffer only. This must remain at the end
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* of the file.
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* ---------------------------------------------------------------------------
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* Local variables:
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* c-indent-level: 2
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* c-brace-imaginary-offset: 0
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* c-brace-offset: -2
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* c-argdecl-indent: 2
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* c-label-offset: -2
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* c-continued-statement-offset: 2
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* c-continued-brace-offset: 0
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* indent-tabs-mode: nil
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* tab-width: 8
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* End:
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*/
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