/*
- * $Id: i386-ports.c,v 1.3 2002/03/30 15:39:25 mj Exp $
- *
* The PCI Library -- Direct Configuration access via i386 Ports
*
- * Copyright (c) 1997--1999 Martin Mares <mj@ucw.cz>
+ * Copyright (c) 1997--2006 Martin Mares <mj@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
+#define _GNU_SOURCE
+
+#include "internal.h"
+
#include <unistd.h>
-#ifdef __GLIBC__
-#include <sys/io.h>
+#if defined(PCI_OS_LINUX)
+#include "i386-io-linux.h"
+#elif defined(PCI_OS_GNU)
+#include "i386-io-hurd.h"
+#elif defined(PCI_OS_SUNOS)
+#include "i386-io-sunos.h"
+#elif defined(PCI_OS_WINDOWS)
+#include "i386-io-windows.h"
+#elif defined(PCI_OS_CYGWIN)
+#include "i386-io-cygwin.h"
#else
-#include <asm/io.h>
+#error Do not know how to access I/O ports on this OS.
#endif
-#include "internal.h"
-
-static int intel_iopl_set = -1;
+static int conf12_io_enabled = -1; /* -1=haven't tried, 0=failed, 1=succeeded */
static int
-intel_setup_io(void)
+conf12_setup_io(struct pci_access *a)
{
- if (intel_iopl_set < 0)
- intel_iopl_set = (iopl(3) < 0) ? 0 : 1;
- return intel_iopl_set;
+ if (conf12_io_enabled < 0)
+ conf12_io_enabled = intel_setup_io(a);
+ return conf12_io_enabled;
}
static void
conf12_init(struct pci_access *a)
{
- if (!intel_setup_io())
- a->error("You need to be root to have access to I/O ports.");
+ if (!conf12_setup_io(a))
+ a->error("No permission to access I/O ports (you probably have to be root).");
}
static void
-conf12_cleanup(struct pci_access * UNUSED a)
+conf12_cleanup(struct pci_access *a UNUSED)
{
- iopl(3);
- intel_iopl_set = -1;
+ if (conf12_io_enabled > 0)
+ conf12_io_enabled = intel_cleanup_io(a);
}
/*
a->debug("...sanity check");
d.bus = 0;
d.func = 0;
- for(d.dev = 0; d.dev < 32; d.dev++)
+ for (d.dev = 0; d.dev < 32; d.dev++)
{
u16 class, vendor;
if (m->read(&d, PCI_CLASS_DEVICE, (byte *) &class, sizeof(class)) &&
unsigned int tmp;
int res = 0;
- if (!intel_setup_io())
+ if (!conf12_setup_io(a))
{
a->debug("...no I/O permission");
return 0;
conf1_read(struct pci_dev *d, int pos, byte *buf, int len)
{
int addr = 0xcfc + (pos&3);
+
+ if (pos >= 256)
+ return 0;
+
outl(0x80000000 | ((d->bus & 0xff) << 16) | (PCI_DEVFN(d->dev, d->func) << 8) | (pos&~3), 0xcf8);
switch (len)
conf1_write(struct pci_dev *d, int pos, byte *buf, int len)
{
int addr = 0xcfc + (pos&3);
+
+ if (pos >= 256)
+ return 0;
+
outl(0x80000000 | ((d->bus & 0xff) << 16) | (PCI_DEVFN(d->dev, d->func) << 8) | (pos&~3), 0xcf8);
switch (len)
static int
conf2_detect(struct pci_access *a)
{
- if (!intel_setup_io())
+ if (!conf12_setup_io(a))
{
a->debug("...no I/O permission");
return 0;
{
int addr = 0xc000 | (d->dev << 8) | pos;
+ if (pos >= 256)
+ return 0;
+
if (d->dev >= 16)
/* conf2 supports only 16 devices per bus */
return 0;
{
int addr = 0xc000 | (d->dev << 8) | pos;
+ if (pos >= 256)
+ return 0;
+
if (d->dev >= 16)
d->access->error("conf2_write: only first 16 devices exist.");
outb((d->func << 1) | 0xf0, 0xcf8);
}
struct pci_methods pm_intel_conf1 = {
- "Intel-conf1",
+ "intel-conf1",
+ "Raw I/O port access using Intel conf1 interface",
NULL, /* config */
conf1_detect,
conf12_init,
pci_generic_fill_info,
conf1_read,
conf1_write,
+ NULL, /* read_vpd */
NULL, /* init_dev */
NULL /* cleanup_dev */
};
struct pci_methods pm_intel_conf2 = {
- "Intel-conf2",
+ "intel-conf2",
+ "Raw I/O port access using Intel conf2 interface",
NULL, /* config */
conf2_detect,
conf12_init,
pci_generic_fill_info,
conf2_read,
conf2_write,
+ NULL, /* read_vpd */
NULL, /* init_dev */
NULL /* cleanup_dev */
};