Adding upstream version 1:3.9.0.upstream/1%3.9.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 182 insertions, 0 deletions

diff --git a/ls-map.c b/ls-map.c
new file mode 100644
index 0000000..9b2cc8c
--- /dev/null
+++ b/ls-map.c
@@ -0,0 +1,182 @@
+/*
+ *	The PCI Utilities -- Bus Mapping Mode
+ *
+ *	Copyright (c) 1997--2008 Martin Mares <mj@ucw.cz>
+ *
+ *	Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "lspci.h"
+
+struct bus_bridge {
+  struct bus_bridge *next;
+  byte this, dev, func, first, last, bug;
+};
+
+struct bus_info {
+  byte exists;
+  byte guestbook;
+  struct bus_bridge *bridges, *via;
+};
+
+static struct bus_info *bus_info;
+
+static void
+map_bridge(struct bus_info *bi, struct device *d, int np, int ns, int nl)
+{
+  struct bus_bridge *b = xmalloc(sizeof(struct bus_bridge));
+  struct pci_dev *p = d->dev;
+
+  b->next = bi->bridges;
+  bi->bridges = b;
+  b->this = get_conf_byte(d, np);
+  b->dev = p->dev;
+  b->func = p->func;
+  b->first = get_conf_byte(d, ns);
+  b->last = get_conf_byte(d, nl);
+  printf("## %02x:%02x.%d is a bridge from %02x to %02x-%02x\n",
+	 p->bus, p->dev, p->func, b->this, b->first, b->last);
+  if (b->this != p->bus)
+    printf("!!! Bridge points to invalid primary bus.\n");
+  if (b->first > b->last)
+    {
+      printf("!!! Bridge points to invalid bus range.\n");
+      b->last = b->first;
+    }
+}
+
+static void
+do_map_bus(int bus)
+{
+  int domain = (filter.domain >= 0 ? filter.domain : 0);
+  int dev, func;
+  int verbose = pacc->debugging;
+  struct bus_info *bi = bus_info + bus;
+  struct device *d;
+
+  if (verbose)
+    printf("Mapping bus %04x:%02x\n", domain, bus);
+  for (dev = 0; dev < 32; dev++)
+    if (filter.slot < 0 || filter.slot == dev)
+      {
+	int func_limit = 1;
+	for (func = 0; func < func_limit; func++)
+	  if (filter.func < 0 || filter.func == func)
+	    {
+	      struct pci_dev *p = pci_get_dev(pacc, domain, bus, dev, func);
+	      u16 vendor = pci_read_word(p, PCI_VENDOR_ID);
+	      if (vendor && vendor != 0xffff)
+		{
+		  if (!func && (pci_read_byte(p, PCI_HEADER_TYPE) & 0x80))
+		    func_limit = 8;
+		  if (verbose)
+		    printf("Discovered device %04x:%02x:%02x.%d\n", domain, bus, dev, func);
+		  bi->exists = 1;
+		  if (d = scan_device(p))
+		    {
+		      show_device(d);
+		      switch (get_conf_byte(d, PCI_HEADER_TYPE) & 0x7f)
+			{
+			case PCI_HEADER_TYPE_BRIDGE:
+			  map_bridge(bi, d, PCI_PRIMARY_BUS, PCI_SECONDARY_BUS, PCI_SUBORDINATE_BUS);
+			  break;
+			case PCI_HEADER_TYPE_CARDBUS:
+			  map_bridge(bi, d, PCI_CB_PRIMARY_BUS, PCI_CB_CARD_BUS, PCI_CB_SUBORDINATE_BUS);
+			  break;
+			}
+		      free(d);
+		    }
+		  else if (verbose)
+		    printf("But it was filtered out.\n");
+		}
+	      pci_free_dev(p);
+	    }
+      }
+}
+
+static void
+do_map_bridges(int bus, int min, int max)
+{
+  struct bus_info *bi = bus_info + bus;
+  struct bus_bridge *b;
+
+  bi->guestbook = 1;
+  for (b=bi->bridges; b; b=b->next)
+    {
+      if (bus_info[b->first].guestbook)
+	b->bug = 1;
+      else if (b->first < min || b->last > max)
+	b->bug = 2;
+      else
+	{
+	  bus_info[b->first].via = b;
+	  do_map_bridges(b->first, b->first, b->last);
+	}
+    }
+}
+
+static void
+map_bridges(void)
+{
+  int i;
+
+  printf("\nSummary of buses:\n\n");
+  for (i=0; i<256; i++)
+    if (bus_info[i].exists && !bus_info[i].guestbook)
+      do_map_bridges(i, 0, 255);
+  for (i=0; i<256; i++)
+    {
+      struct bus_info *bi = bus_info + i;
+      struct bus_bridge *b = bi->via;
+
+      if (bi->exists)
+	{
+	  printf("%02x: ", i);
+	  if (b)
+	    printf("Entered via %02x:%02x.%d\n", b->this, b->dev, b->func);
+	  else if (!i)
+	    printf("Primary host bus\n");
+	  else
+	    printf("Secondary host bus (?)\n");
+	}
+      for (b=bi->bridges; b; b=b->next)
+	{
+	  printf("\t%02x.%d Bridge to %02x-%02x", b->dev, b->func, b->first, b->last);
+	  switch (b->bug)
+	    {
+	    case 1:
+	      printf(" <overlap bug>");
+	      break;
+	    case 2:
+	      printf(" <crossing bug>");
+	      break;
+	    }
+	  putchar('\n');
+	}
+    }
+}
+
+void
+map_the_bus(void)
+{
+  if (pacc->method == PCI_ACCESS_PROC_BUS_PCI ||
+      pacc->method == PCI_ACCESS_SYS_BUS_PCI ||
+      pacc->method == PCI_ACCESS_WIN32_CFGMGR32 ||
+      pacc->method == PCI_ACCESS_DUMP)
+    printf("WARNING: Bus mapping can be reliable only with direct hardware access enabled.\n\n");
+  bus_info = xmalloc(sizeof(struct bus_info) * 256);
+  memset(bus_info, 0, sizeof(struct bus_info) * 256);
+  if (filter.bus >= 0)
+    do_map_bus(filter.bus);
+  else
+    {
+      int bus;
+      for (bus=0; bus<256; bus++)
+	do_map_bus(bus);
+    }
+  map_bridges();
+}