aic7xxx_proc.c
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上传日期:2013-02-24
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文件大小:13k
- /*+M*************************************************************************
- * Adaptec AIC7xxx device driver proc support for Linux.
- *
- * Copyright (c) 1995, 1996 Dean W. Gehnert
- *
- * 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, 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 program; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * ----------------------------------------------------------------
- * o Modified from the EATA-DMA /proc support.
- * o Additional support for device block statistics provided by
- * Matthew Jacob.
- * o Correction of overflow by Heinz Mauelshagen
- * o Adittional corrections by Doug Ledford
- *
- * Dean W. Gehnert, deang@teleport.com, 05/01/96
- *
- * $Id: aic7xxx_proc.c,v 4.1 1997/06/97 08:23:42 deang Exp $
- *-M*************************************************************************/
- #include <linux/config.h>
- #define BLS (&aic7xxx_buffer[size])
- #define HDRB
- " < 2K 2K+ 4K+ 8K+ 16K+ 32K+ 64K+ 128K+"
- #ifdef PROC_DEBUG
- extern int vsprintf(char *, const char *, va_list);
- static void
- proc_debug(const char *fmt, ...)
- {
- va_list ap;
- char buf[256];
- va_start(ap, fmt);
- vsprintf(buf, fmt, ap);
- printk(buf);
- va_end(ap);
- }
- #else /* PROC_DEBUG */
- # define proc_debug(fmt, args...)
- #endif /* PROC_DEBUG */
- static int aic7xxx_buffer_size = 0;
- static char *aic7xxx_buffer = NULL;
- /*+F*************************************************************************
- * Function:
- * aic7xxx_set_info
- *
- * Description:
- * Set parameters for the driver from the /proc filesystem.
- *-F*************************************************************************/
- int
- aic7xxx_set_info(char *buffer, int length, struct Scsi_Host *HBAptr)
- {
- proc_debug("aic7xxx_set_info(): %sn", buffer);
- return (-ENOSYS); /* Currently this is a no-op */
- }
- /*+F*************************************************************************
- * Function:
- * aic7xxx_proc_info
- *
- * Description:
- * Return information to handle /proc support for the driver.
- *-F*************************************************************************/
- int
- aic7xxx_proc_info ( char *buffer, char **start, off_t offset, int length,
- int hostno, int inout)
- {
- struct Scsi_Host *HBAptr;
- struct aic7xxx_host *p;
- int size = 0;
- unsigned char i;
- struct aic7xxx_xferstats *sp;
- unsigned char target;
- HBAptr = NULL;
- for(p=first_aic7xxx; p->host->host_no != hostno; p=p->next)
- ;
- if (!p)
- {
- size += sprintf(buffer, "Can't find adapter for host number %dn", hostno);
- if (size > length)
- {
- return (size);
- }
- else
- {
- return (length);
- }
- }
- HBAptr = p->host;
- if (inout == TRUE) /* Has data been written to the file? */
- {
- return (aic7xxx_set_info(buffer, length, HBAptr));
- }
- p = (struct aic7xxx_host *) HBAptr->hostdata;
- /*
- * It takes roughly 1K of space to hold all relevant card info, not
- * counting any proc stats, so we start out with a 1.5k buffer size and
- * if proc_stats is defined, then we sweep the stats structure to see
- * how many drives we will be printing out for and add 384 bytes per
- * device with active stats.
- *
- * Hmmmm...that 1.5k seems to keep growing as items get added so they
- * can be easily viewed for debugging purposes. So, we bumped that
- * 1.5k to 4k so we can quit having to bump it all the time.
- */
- size = 4096;
- for (target = 0; target < MAX_TARGETS; target++)
- {
- if (p->dev_flags[target] & DEVICE_PRESENT)
- #ifdef AIC7XXX_PROC_STATS
- size += 512;
- #else
- size += 256;
- #endif
- }
- if (aic7xxx_buffer_size != size)
- {
- if (aic7xxx_buffer != NULL)
- {
- kfree(aic7xxx_buffer);
- aic7xxx_buffer_size = 0;
- }
- aic7xxx_buffer = kmalloc(size, GFP_KERNEL);
- }
- if (aic7xxx_buffer == NULL)
- {
- size = sprintf(buffer, "AIC7xxx - kmalloc error at line %dn",
- __LINE__);
- return size;
- }
- aic7xxx_buffer_size = size;
- size = 0;
- size += sprintf(BLS, "Adaptec AIC7xxx driver version: ");
- size += sprintf(BLS, "%s/", AIC7XXX_C_VERSION);
- size += sprintf(BLS, "%s", AIC7XXX_H_VERSION);
- size += sprintf(BLS, "n");
- size += sprintf(BLS, "Compile Options:n");
- #ifdef CONFIG_AIC7XXX_OLD_TCQ_ON_BY_DEFAULT
- size += sprintf(BLS, " TCQ Enabled By Default : Enabledn");
- #else
- size += sprintf(BLS, " TCQ Enabled By Default : Disabledn");
- #endif
- #ifdef AIC7XXX_PROC_STATS
- size += sprintf(BLS, " AIC7XXX_PROC_STATS : Enabledn");
- #else
- size += sprintf(BLS, " AIC7XXX_PROC_STATS : Disabledn");
- #endif
- size += sprintf(BLS, "n");
- size += sprintf(BLS, "Adapter Configuration:n");
- size += sprintf(BLS, " SCSI Adapter: %sn",
- board_names[p->board_name_index]);
- if (p->flags & AHC_TWIN)
- size += sprintf(BLS, " Twin Channel Controller ");
- else
- {
- char *channel = "";
- char *ultra = "";
- char *wide = "Narrow ";
- if (p->flags & AHC_MULTI_CHANNEL)
- {
- channel = " Channel A";
- if (p->flags & (AHC_CHNLB|AHC_CHNLC))
- channel = (p->flags & AHC_CHNLB) ? " Channel B" : " Channel C";
- }
- if (p->features & AHC_WIDE)
- wide = "Wide ";
- if (p->features & AHC_ULTRA3)
- {
- switch(p->chip & AHC_CHIPID_MASK)
- {
- case AHC_AIC7892:
- case AHC_AIC7899:
- ultra = "Ultra-160/m LVD/SE ";
- break;
- default:
- ultra = "Ultra-3 LVD/SE ";
- break;
- }
- }
- else if (p->features & AHC_ULTRA2)
- ultra = "Ultra-2 LVD/SE ";
- else if (p->features & AHC_ULTRA)
- ultra = "Ultra ";
- size += sprintf(BLS, " %s%sController%s ",
- ultra, wide, channel);
- }
- switch(p->chip & ~AHC_CHIPID_MASK)
- {
- case AHC_VL:
- size += sprintf(BLS, "at VLB slot %dn", p->pci_device_fn);
- break;
- case AHC_EISA:
- size += sprintf(BLS, "at EISA slot %dn", p->pci_device_fn);
- break;
- default:
- size += sprintf(BLS, "at PCI %d/%d/%dn", p->pci_bus,
- PCI_SLOT(p->pci_device_fn), PCI_FUNC(p->pci_device_fn));
- break;
- }
- if( !(p->maddr) )
- {
- size += sprintf(BLS, " Programmed I/O Base: %lxn", p->base);
- }
- else
- {
- size += sprintf(BLS, " PCI MMAPed I/O Base: 0x%lxn", p->mbase);
- }
- if( (p->chip & (AHC_VL | AHC_EISA)) )
- {
- size += sprintf(BLS, " BIOS Memory Address: 0x%08xn", p->bios_address);
- }
- size += sprintf(BLS, " Adapter SEEPROM Config: %sn",
- (p->flags & AHC_SEEPROM_FOUND) ? "SEEPROM found and used." :
- ((p->flags & AHC_USEDEFAULTS) ? "SEEPROM not found, using defaults." :
- "SEEPROM not found, using leftover BIOS values.") );
- size += sprintf(BLS, " Adaptec SCSI BIOS: %sn",
- (p->flags & AHC_BIOS_ENABLED) ? "Enabled" : "Disabled");
- size += sprintf(BLS, " IRQ: %dn", HBAptr->irq);
- size += sprintf(BLS, " SCBs: Active %d, Max Active %d,n",
- p->activescbs, p->max_activescbs);
- size += sprintf(BLS, " Allocated %d, HW %d, "
- "Page %dn", p->scb_data->numscbs, p->scb_data->maxhscbs,
- p->scb_data->maxscbs);
- if (p->flags & AHC_EXTERNAL_SRAM)
- size += sprintf(BLS, " Using External SCB SRAMn");
- size += sprintf(BLS, " Interrupts: %ld", p->isr_count);
- if (p->chip & AHC_EISA)
- {
- size += sprintf(BLS, " %sn",
- (p->pause & IRQMS) ? "(Level Sensitive)" : "(Edge Triggered)");
- }
- else
- {
- size += sprintf(BLS, "n");
- }
- size += sprintf(BLS, " BIOS Control Word: 0x%04xn",
- p->bios_control);
- size += sprintf(BLS, " Adapter Control Word: 0x%04xn",
- p->adapter_control);
- size += sprintf(BLS, " Extended Translation: %sabledn",
- (p->flags & AHC_EXTEND_TRANS_A) ? "En" : "Dis");
- size += sprintf(BLS, "Disconnect Enable Flags: 0x%04xn", p->discenable);
- if (p->features & (AHC_ULTRA | AHC_ULTRA2))
- {
- size += sprintf(BLS, " Ultra Enable Flags: 0x%04xn", p->ultraenb);
- }
- size += sprintf(BLS, " Tag Queue Enable Flags: 0x%04xn", p->tagenable);
- size += sprintf(BLS, "Ordered Queue Tag Flags: 0x%04xn", p->orderedtag);
- size += sprintf(BLS, "Default Tag Queue Depth: %dn", AIC7XXX_CMDS_PER_DEVICE);
- size += sprintf(BLS, " Tagged Queue By Device array for aic7xxx host "
- "instance %d:n", p->instance);
- size += sprintf(BLS, " {");
- for(i=0; i < (MAX_TARGETS - 1); i++)
- size += sprintf(BLS, "%d,",aic7xxx_tag_info[p->instance].tag_commands[i]);
- size += sprintf(BLS, "%d}n",aic7xxx_tag_info[p->instance].tag_commands[i]);
- size += sprintf(BLS, " Actual queue depth per device for aic7xxx host "
- "instance %d:n", p->instance);
- size += sprintf(BLS, " {");
- for(i=0; i < (MAX_TARGETS - 1); i++)
- size += sprintf(BLS, "%d,", p->dev_max_queue_depth[i]);
- size += sprintf(BLS, "%d}n", p->dev_max_queue_depth[i]);
- size += sprintf(BLS, "n");
- size += sprintf(BLS, "Statistics:nn");
- for (target = 0; target < MAX_TARGETS; target++)
- {
- sp = &p->stats[target];
- if ((p->dev_flags[target] & DEVICE_PRESENT) == 0)
- {
- continue;
- }
- if (p->features & AHC_TWIN)
- {
- size += sprintf(BLS, "(scsi%d:%d:%d:%d)n",
- p->host_no, (target >> 3), (target & 0x7), 0);
- }
- else
- {
- size += sprintf(BLS, "(scsi%d:%d:%d:%d)n",
- p->host_no, 0, target, 0);
- }
- size += sprintf(BLS, " Device using %s/%s",
- (p->transinfo[target].cur_width == MSG_EXT_WDTR_BUS_16_BIT) ?
- "Wide" : "Narrow",
- (p->transinfo[target].cur_offset != 0) ?
- "Sync transfers at " : "Async transfers.n" );
- if (p->transinfo[target].cur_offset != 0)
- {
- struct aic7xxx_syncrate *sync_rate;
- unsigned char options = p->transinfo[target].cur_options;
- int period = p->transinfo[target].cur_period;
- int rate = (p->transinfo[target].cur_width ==
- MSG_EXT_WDTR_BUS_16_BIT) ? 1 : 0;
- sync_rate = aic7xxx_find_syncrate(p, &period, 0, &options);
- if (sync_rate != NULL)
- {
- size += sprintf(BLS, "%s MByte/sec, offset %dn",
- sync_rate->rate[rate],
- p->transinfo[target].cur_offset );
- }
- else
- {
- size += sprintf(BLS, "3.3 MByte/sec, offset %dn",
- p->transinfo[target].cur_offset );
- }
- }
- size += sprintf(BLS, " Transinfo settings: ");
- size += sprintf(BLS, "current(%d/%d/%d/%d), ",
- p->transinfo[target].cur_period,
- p->transinfo[target].cur_offset,
- p->transinfo[target].cur_width,
- p->transinfo[target].cur_options);
- size += sprintf(BLS, "goal(%d/%d/%d/%d), ",
- p->transinfo[target].goal_period,
- p->transinfo[target].goal_offset,
- p->transinfo[target].goal_width,
- p->transinfo[target].goal_options);
- size += sprintf(BLS, "user(%d/%d/%d/%d)n",
- p->transinfo[target].user_period,
- p->transinfo[target].user_offset,
- p->transinfo[target].user_width,
- p->transinfo[target].user_options);
- #ifdef AIC7XXX_PROC_STATS
- size += sprintf(BLS, " Total transfers %ld (%ld reads and %ld writes)n",
- sp->r_total + sp->w_total, sp->r_total, sp->w_total);
- size += sprintf(BLS, "%sn", HDRB);
- size += sprintf(BLS, " Reads:");
- for (i = 0; i < NUMBER(sp->r_bins); i++)
- {
- size += sprintf(BLS, " %7ld", sp->r_bins[i]);
- }
- size += sprintf(BLS, "n");
- size += sprintf(BLS, " Writes:");
- for (i = 0; i < NUMBER(sp->w_bins); i++)
- {
- size += sprintf(BLS, " %7ld", sp->w_bins[i]);
- }
- size += sprintf(BLS, "n");
- #else
- size += sprintf(BLS, " Total transfers %ld (%ld reads and %ld writes)n",
- sp->r_total + sp->w_total, sp->r_total, sp->w_total);
- #endif /* AIC7XXX_PROC_STATS */
- size += sprintf(BLS, "nn");
- }
- if (size >= aic7xxx_buffer_size)
- {
- printk(KERN_WARNING "aic7xxx: Overflow in aic7xxx_proc.cn");
- }
- if (offset > size - 1)
- {
- kfree(aic7xxx_buffer);
- aic7xxx_buffer = NULL;
- aic7xxx_buffer_size = length = 0;
- *start = NULL;
- }
- else
- {
- *start = buffer;
- length = MIN(length, size - offset);
- memcpy(buffer, &aic7xxx_buffer[offset], length);
- }
- return (length);
- }
- /*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-indent-level: 2
- * c-brace-imaginary-offset: 0
- * c-brace-offset: -2
- * c-argdecl-indent: 2
- * c-label-offset: -2
- * c-continued-statement-offset: 2
- * c-continued-brace-offset: 0
- * indent-tabs-mode: nil
- * tab-width: 8
- * End:
- */