144 lines
3.7 KiB
Diff
144 lines
3.7 KiB
Diff
diff -up libpciaccess-0.12.902/src/linux_sysfs.c.jx libpciaccess-0.12.902/src/linux_sysfs.c
|
|
--- libpciaccess-0.12.902/src/linux_sysfs.c.jx 2012-02-07 11:48:09.699318237 -0500
|
|
+++ libpciaccess-0.12.902/src/linux_sysfs.c 2012-02-08 13:37:19.341169509 -0500
|
|
@@ -1,6 +1,7 @@
|
|
/*
|
|
* (C) Copyright IBM Corporation 2006
|
|
* All Rights Reserved.
|
|
+ * Copyright 2012 Red Hat, Inc.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
@@ -44,6 +45,18 @@
|
|
#include <dirent.h>
|
|
#include <errno.h>
|
|
|
|
+#if defined(__i386__) || defined(__x86_64__) || defined(__arm__)
|
|
+#include <sys/io.h>
|
|
+#else
|
|
+#define inb(x) -1
|
|
+#define inw(x) -1
|
|
+#define inl(x) -1
|
|
+#define outb(x) do {} while (0)
|
|
+#define outw(x) do {} while (0)
|
|
+#define outl(x) do {} while (0)
|
|
+#define iopl(x) -1
|
|
+#endif
|
|
+
|
|
#include "config.h"
|
|
|
|
#ifdef HAVE_MTRR
|
|
@@ -775,19 +788,24 @@ pci_device_linux_sysfs_open_legacy_io(st
|
|
snprintf(name, PATH_MAX, "/sys/class/pci_bus/%04x:%02x/legacy_io",
|
|
dev->domain, dev->bus);
|
|
|
|
- ret->fd = open(name, O_RDWR);
|
|
+ ret->fd = open(name, O_RDWR | O_CLOEXEC);
|
|
if (ret->fd >= 0)
|
|
break;
|
|
|
|
dev = pci_device_get_parent_bridge(dev);
|
|
}
|
|
|
|
- /* If not, /dev/port is the best we can do */
|
|
- if (!dev)
|
|
- ret->fd = open("/dev/port", O_RDWR);
|
|
+ /*
|
|
+ * You would think you'd want to use /dev/port here. Don't make that
|
|
+ * mistake, /dev/port only does byte-wide i/o cycles which means it
|
|
+ * doesn't work. If you think this is stupid, well, you're right.
|
|
+ */
|
|
|
|
- if (ret->fd < 0)
|
|
- return NULL;
|
|
+ /* If we've no other choice, iopl */
|
|
+ if (ret->fd < 0) {
|
|
+ if (iopl(3))
|
|
+ return NULL;
|
|
+ }
|
|
|
|
ret->base = base;
|
|
ret->size = size;
|
|
@@ -799,7 +817,8 @@ static void
|
|
pci_device_linux_sysfs_close_io(struct pci_device *dev,
|
|
struct pci_io_handle *handle)
|
|
{
|
|
- close(handle->fd);
|
|
+ if (handle->fd > -1)
|
|
+ close(handle->fd);
|
|
}
|
|
|
|
static uint32_t
|
|
@@ -807,8 +826,11 @@ pci_device_linux_sysfs_read32(struct pci
|
|
{
|
|
uint32_t ret;
|
|
|
|
- pread(handle->fd, &ret, 4, port + handle->base);
|
|
-
|
|
+ if (handle->fd > -1)
|
|
+ pread(handle->fd, &ret, 4, port + handle->base);
|
|
+ else
|
|
+ ret = inl(port + handle->base);
|
|
+
|
|
return ret;
|
|
}
|
|
|
|
@@ -817,7 +839,10 @@ pci_device_linux_sysfs_read16(struct pci
|
|
{
|
|
uint16_t ret;
|
|
|
|
- pread(handle->fd, &ret, 2, port + handle->base);
|
|
+ if (handle->fd > -1)
|
|
+ pread(handle->fd, &ret, 2, port + handle->base);
|
|
+ else
|
|
+ ret = inw(port + handle->base);
|
|
|
|
return ret;
|
|
}
|
|
@@ -827,7 +852,10 @@ pci_device_linux_sysfs_read8(struct pci_
|
|
{
|
|
uint8_t ret;
|
|
|
|
- pread(handle->fd, &ret, 1, port + handle->base);
|
|
+ if (handle->fd > -1)
|
|
+ pread(handle->fd, &ret, 1, port + handle->base);
|
|
+ else
|
|
+ ret = inb(port + handle->base);
|
|
|
|
return ret;
|
|
}
|
|
@@ -836,21 +864,30 @@ static void
|
|
pci_device_linux_sysfs_write32(struct pci_io_handle *handle, uint32_t port,
|
|
uint32_t data)
|
|
{
|
|
- pwrite(handle->fd, &data, 4, port + handle->base);
|
|
+ if (handle->fd > -1)
|
|
+ pwrite(handle->fd, &data, 4, port + handle->base);
|
|
+ else
|
|
+ outl(data, port + handle->base);
|
|
}
|
|
|
|
static void
|
|
pci_device_linux_sysfs_write16(struct pci_io_handle *handle, uint32_t port,
|
|
uint16_t data)
|
|
{
|
|
- pwrite(handle->fd, &data, 2, port + handle->base);
|
|
+ if (handle->fd > -1)
|
|
+ pwrite(handle->fd, &data, 2, port + handle->base);
|
|
+ else
|
|
+ outw(data, port + handle->base);
|
|
}
|
|
|
|
static void
|
|
pci_device_linux_sysfs_write8(struct pci_io_handle *handle, uint32_t port,
|
|
uint8_t data)
|
|
{
|
|
- pwrite(handle->fd, &data, 1, port + handle->base);
|
|
+ if (handle->fd > -1)
|
|
+ pwrite(handle->fd, &data, 1, port + handle->base);
|
|
+ else
|
|
+ outb(data, port + handle->base);
|
|
}
|
|
|
|
static int
|