patch-2.2.19 linux/drivers/scsi/aic7xxx/aic7xxx_proc.c

• Lines: 415
• Date: Sun Mar 25 11:37:35 2001
• Orig file: v2.2.18/drivers/scsi/aic7xxx/aic7xxx_proc.c
• Orig date: Wed Dec 31 19:00:00 1969

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.18/drivers/scsi/aic7xxx/aic7xxx_proc.c linux/drivers/scsi/aic7xxx/aic7xxx_proc.c
@@ -0,0 +1,414 @@
+/*+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(): %s\n", 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 %d\n", 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 %d\n",
+        __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_TCQ_ON_BY_DEFAULT
+  size += sprintf(BLS, "  TCQ Enabled By Default : Enabled\n");
+#else
+  size += sprintf(BLS, "  TCQ Enabled By Default : Disabled\n");
+#endif
+#ifdef AIC7XXX_PROC_STATS
+  size += sprintf(BLS, "  AIC7XXX_PROC_STATS     : Enabled\n");
+#else
+  size += sprintf(BLS, "  AIC7XXX_PROC_STATS     : Disabled\n");
+#endif
+  size += sprintf(BLS, "  AIC7XXX_RESET_DELAY    : %d\n", AIC7XXX_RESET_DELAY);
+  size += sprintf(BLS, "\n");
+  size += sprintf(BLS, "Adapter Configuration:\n");
+  size += sprintf(BLS, "           SCSI Adapter: %s\n",
+      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 %d\n", p->pci_device_fn);
+      break;
+    case AHC_EISA:
+      size += sprintf(BLS, "at EISA slot %d\n", p->pci_device_fn);
+      break;
+    default:
+      size += sprintf(BLS, "at PCI %d/%d/%d\n", 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: %lx\n", p->base);
+  }
+  else
+  {
+    size += sprintf(BLS, "    PCI MMAPed I/O Base: 0x%lx\n", p->mbase);
+  }
+  if( (p->chip & (AHC_VL | AHC_EISA)) )
+  {
+    size += sprintf(BLS, "    BIOS Memory Address: 0x%08x\n", p->bios_address);
+  }
+  size += sprintf(BLS, " Adapter SEEPROM Config: %s\n",
+          (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: %s\n",
+          (p->flags & AHC_BIOS_ENABLED) ? "Enabled" : "Disabled");
+  size += sprintf(BLS, "                    IRQ: %d\n", 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 %d\n", p->scb_data->numscbs, p->scb_data->maxhscbs,
+            p->scb_data->maxscbs);
+  if (p->flags & AHC_EXTERNAL_SRAM)
+    size += sprintf(BLS, "                         Using External SCB SRAM\n");
+  size += sprintf(BLS, "             Interrupts: %ld", p->isr_count);
+  if (p->chip & AHC_EISA)
+  {
+    size += sprintf(BLS, " %s\n",
+        (p->pause & IRQMS) ? "(Level Sensitive)" : "(Edge Triggered)");
+  }
+  else
+  {
+    size += sprintf(BLS, "\n");
+  }
+  size += sprintf(BLS, "      BIOS Control Word: 0x%04x\n",
+            p->bios_control);
+  size += sprintf(BLS, "   Adapter Control Word: 0x%04x\n",
+            p->adapter_control);
+  size += sprintf(BLS, "   Extended Translation: %sabled\n",
+      (p->flags & AHC_EXTEND_TRANS_A) ? "En" : "Dis");
+  size += sprintf(BLS, "Disconnect Enable Flags: 0x%04x\n", p->discenable);
+  if (p->features & (AHC_ULTRA | AHC_ULTRA2))
+  {
+    size += sprintf(BLS, "     Ultra Enable Flags: 0x%04x\n", p->ultraenb);
+  }
+  size += sprintf(BLS, " Tag Queue Enable Flags: 0x%04x\n", p->tagenable);
+  size += sprintf(BLS, "Ordered Queue Tag Flags: 0x%04x\n", p->orderedtag);
+  size += sprintf(BLS, "Default Tag Queue Depth: %d\n", 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:\n\n");
+  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 %d\n",
+                        sync_rate->rate[rate],
+                        p->transinfo[target].cur_offset );
+      }
+      else
+      {
+        size += sprintf(BLS, "3.3 MByte/sec, offset %d\n",
+                        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, "%s\n", 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, "\n\n");
+  }
+
+  if (size >= aic7xxx_buffer_size)
+  {
+    printk(KERN_WARNING "aic7xxx: Overflow in aic7xxx_proc.c\n");
+  }
+
+  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:
+ */