Move libdrm/ up one level

1 files changed, 0 insertions, 2512 deletions

diff --git a/libdrm/xf86drm.c b/libdrm/xf86drm.c
deleted file mode 100644
index 26dd8129..00000000
--- a/libdrm/xf86drm.c
+++ /dev/null
@@ -1,2512 +0,0 @@
-/**
- * \file xf86drm.c 
- * User-level interface to DRM device
- *
- * \author Rickard E. (Rik) Faith <faith@valinux.com>
- * \author Kevin E. Martin <martin@valinux.com>
- */
-
-/*
- * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
- * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <strings.h>
-#include <ctype.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <signal.h>
-#include <time.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#define stat_t struct stat
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/time.h>
-#include <stdarg.h>
-
-/* Not all systems have MAP_FAILED defined */
-#ifndef MAP_FAILED
-#define MAP_FAILED ((void *)-1)
-#endif
-
-#include "xf86drm.h"
-
-#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
-#define DRM_MAJOR 145
-#endif
-
-#ifdef __NetBSD__
-#define DRM_MAJOR 34
-#endif
-
-# ifdef __OpenBSD__
-#  define DRM_MAJOR 81
-# endif
-
-#ifndef DRM_MAJOR
-#define DRM_MAJOR 226		/* Linux */
-#endif
-
-#ifndef DRM_MAX_MINOR
-#define DRM_MAX_MINOR 16
-#endif
-
-/*
- * This definition needs to be changed on some systems if dev_t is a structure.
- * If there is a header file we can get it from, there would be best.
- */
-#ifndef makedev
-#define makedev(x,y)    ((dev_t)(((x) << 8) | (y)))
-#endif
-
-#define DRM_MSG_VERBOSITY 3
-
-#define DRM_NODE_CONTROL 0
-#define DRM_NODE_RENDER 1
-
-static drmServerInfoPtr drm_server_info;
-
-void drmSetServerInfo(drmServerInfoPtr info)
-{
-    drm_server_info = info;
-}
-
-/**
- * Output a message to stderr.
- *
- * \param format printf() like format string.
- *
- * \internal
- * This function is a wrapper around vfprintf().
- */
-
-static int drmDebugPrint(const char *format, va_list ap)
-{
-    return vfprintf(stderr, format, ap);
-}
-
-static int (*drm_debug_print)(const char *format, va_list ap) = drmDebugPrint;
-
-void
-drmMsg(const char *format, ...)
-{
-    va_list	ap;
-    const char *env;
-    if (((env = getenv("LIBGL_DEBUG")) && strstr(env, "verbose")) || drm_server_info)
-    {
-	va_start(ap, format);
-	if (drm_server_info) {
-	  drm_server_info->debug_print(format,ap);
-	} else {
-	  drm_debug_print(format, ap);
-	}
-	va_end(ap);
-    }
-}
-
-void
-drmSetDebugMsgFunction(int (*debug_msg_ptr)(const char *format, va_list ap))
-{
-    drm_debug_print = debug_msg_ptr;
-}
-
-static void *drmHashTable = NULL; /* Context switch callbacks */
-
-void *drmGetHashTable(void)
-{
-    return drmHashTable;
-}
-
-void *drmMalloc(int size)
-{
-    void *pt;
-    if ((pt = malloc(size)))
-	memset(pt, 0, size);
-    return pt;
-}
-
-void drmFree(void *pt)
-{
-    if (pt)
-	free(pt);
-}
-
-/* drmStrdup can't use strdup(3), since it doesn't call _DRM_MALLOC... */
-static char *drmStrdup(const char *s)
-{
-    char *retval;
-
-    if (!s)
-        return NULL;
-
-    retval = malloc(strlen(s)+1);
-    if (!retval)
-        return NULL;
-
-    strcpy(retval, s);
-
-    return retval;
-}
-
-/**
- * Call ioctl, restarting if it is interupted
- */
-int
-drmIoctl(int fd, unsigned long request, void *arg)
-{
-    int	ret;
-
-    do {
-	ret = ioctl(fd, request, arg);
-    } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
-    return ret;
-}
-
-static unsigned long drmGetKeyFromFd(int fd)
-{
-    stat_t     st;
-
-    st.st_rdev = 0;
-    fstat(fd, &st);
-    return st.st_rdev;
-}
-
-drmHashEntry *drmGetEntry(int fd)
-{
-    unsigned long key = drmGetKeyFromFd(fd);
-    void          *value;
-    drmHashEntry  *entry;
-
-    if (!drmHashTable)
-	drmHashTable = drmHashCreate();
-
-    if (drmHashLookup(drmHashTable, key, &value)) {
-	entry           = drmMalloc(sizeof(*entry));
-	entry->fd       = fd;
-	entry->f        = NULL;
-	entry->tagTable = drmHashCreate();
-	drmHashInsert(drmHashTable, key, entry);
-    } else {
-	entry = value;
-    }
-    return entry;
-}
-
-/**
- * Compare two busid strings
- *
- * \param first
- * \param second
- *
- * \return 1 if matched.
- *
- * \internal
- * This function compares two bus ID strings.  It understands the older
- * PCI:b:d:f format and the newer pci:oooo:bb:dd.f format.  In the format, o is
- * domain, b is bus, d is device, f is function.
- */
-static int drmMatchBusID(const char *id1, const char *id2)
-{
-    /* First, check if the IDs are exactly the same */
-    if (strcasecmp(id1, id2) == 0)
-	return 1;
-
-    /* Try to match old/new-style PCI bus IDs. */
-    if (strncasecmp(id1, "pci", 3) == 0) {
-	unsigned int o1, b1, d1, f1;
-	unsigned int o2, b2, d2, f2;
-	int ret;
-
-	ret = sscanf(id1, "pci:%04x:%02x:%02x.%u", &o1, &b1, &d1, &f1);
-	if (ret != 4) {
-	    o1 = 0;
-	    ret = sscanf(id1, "PCI:%u:%u:%u", &b1, &d1, &f1);
-	    if (ret != 3)
-		return 0;
-	}
-
-	ret = sscanf(id2, "pci:%04x:%02x:%02x.%u", &o2, &b2, &d2, &f2);
-	if (ret != 4) {
-	    o2 = 0;
-	    ret = sscanf(id2, "PCI:%u:%u:%u", &b2, &d2, &f2);
-	    if (ret != 3)
-		return 0;
-	}
-
-	if ((o1 != o2) || (b1 != b2) || (d1 != d2) || (f1 != f2))
-	    return 0;
-	else
-	    return 1;
-    }
-    return 0;
-}
-
-/**
- * Handles error checking for chown call.
- *
- * \param path to file.
- * \param id of the new owner.
- * \param id of the new group.
- *
- * \return zero if success or -1 if failure.
- *
- * \internal
- * Checks for failure. If failure was caused by signal call chown again.
- * If any other failure happened then it will output error mesage using
- * drmMsg() call.
- */
-static int chown_check_return(const char *path, uid_t owner, gid_t group)
-{
-	int rv;
-
-	do {
-		rv = chown(path, owner, group);
-	} while (rv != 0 && errno == EINTR);
-
-	if (rv == 0)
-		return 0;
-
-	drmMsg("Failed to change owner or group for file %s! %d: %s\n",
-			path, errno, strerror(errno));
-	return -1;
-}
-
-/**
- * Open the DRM device, creating it if necessary.
- *
- * \param dev major and minor numbers of the device.
- * \param minor minor number of the device.
- * 
- * \return a file descriptor on success, or a negative value on error.
- *
- * \internal
- * Assembles the device name from \p minor and opens it, creating the device
- * special file node with the major and minor numbers specified by \p dev and
- * parent directory if necessary and was called by root.
- */
-static int drmOpenDevice(long dev, int minor, int type)
-{
-    stat_t          st;
-    char            buf[64];
-    int             fd;
-    mode_t          devmode = DRM_DEV_MODE, serv_mode;
-    int             isroot  = !geteuid();
-    uid_t           user    = DRM_DEV_UID;
-    gid_t           group   = DRM_DEV_GID, serv_group;
-    
-    sprintf(buf, type ? DRM_DEV_NAME : DRM_CONTROL_DEV_NAME, DRM_DIR_NAME, minor);
-    drmMsg("drmOpenDevice: node name is %s\n", buf);
-
-    if (drm_server_info) {
-	drm_server_info->get_perms(&serv_group, &serv_mode);
-	devmode  = serv_mode ? serv_mode : DRM_DEV_MODE;
-	devmode &= ~(S_IXUSR|S_IXGRP|S_IXOTH);
-	group = (serv_group >= 0) ? serv_group : DRM_DEV_GID;
-    }
-
-#if !defined(UDEV)
-    if (stat(DRM_DIR_NAME, &st)) {
-	if (!isroot)
-	    return DRM_ERR_NOT_ROOT;
-	mkdir(DRM_DIR_NAME, DRM_DEV_DIRMODE);
-	chown_check_return(DRM_DIR_NAME, 0, 0); /* root:root */
-	chmod(DRM_DIR_NAME, DRM_DEV_DIRMODE);
-    }
-
-    /* Check if the device node exists and create it if necessary. */
-    if (stat(buf, &st)) {
-	if (!isroot)
-	    return DRM_ERR_NOT_ROOT;
-	remove(buf);
-	mknod(buf, S_IFCHR | devmode, dev);
-    }
-
-    if (drm_server_info) {
-	chown_check_return(buf, user, group);
-	chmod(buf, devmode);
-    }
-#else
-    /* if we modprobed then wait for udev */
-    {
-	int udev_count = 0;
-wait_for_udev:
-        if (stat(DRM_DIR_NAME, &st)) {
-		usleep(20);
-		udev_count++;
-
-		if (udev_count == 50)
-			return -1;
-		goto wait_for_udev;
-	}
-
-    	if (stat(buf, &st)) {
-		usleep(20);
-		udev_count++;
-
-		if (udev_count == 50)
-			return -1;
-		goto wait_for_udev;
-    	}
-    }
-#endif
-
-    fd = open(buf, O_RDWR, 0);
-    drmMsg("drmOpenDevice: open result is %d, (%s)\n",
-		fd, fd < 0 ? strerror(errno) : "OK");
-    if (fd >= 0)
-	return fd;
-
-    /* Check if the device node is not what we expect it to be, and recreate it
-     * and try again if so.
-     */
-    if (st.st_rdev != dev) {
-	if (!isroot)
-	    return DRM_ERR_NOT_ROOT;
-	remove(buf);
-	mknod(buf, S_IFCHR | devmode, dev);
-	if (drm_server_info) {
-	    chown_check_return(buf, user, group);
-	    chmod(buf, devmode);
-	}
-    }
-    fd = open(buf, O_RDWR, 0);
-    drmMsg("drmOpenDevice: open result is %d, (%s)\n",
-		fd, fd < 0 ? strerror(errno) : "OK");
-    if (fd >= 0)
-	return fd;
-
-    drmMsg("drmOpenDevice: Open failed\n");
-    remove(buf);
-    return -errno;
-}
-
-
-/**
- * Open the DRM device
- *
- * \param minor device minor number.
- * \param create allow to create the device if set.
- *
- * \return a file descriptor on success, or a negative value on error.
- * 
- * \internal
- * Calls drmOpenDevice() if \p create is set, otherwise assembles the device
- * name from \p minor and opens it.
- */
-static int drmOpenMinor(int minor, int create, int type)
-{
-    int  fd;
-    char buf[64];
-    
-    if (create)
-	return drmOpenDevice(makedev(DRM_MAJOR, minor), minor, type);
-    
-    sprintf(buf, type ? DRM_DEV_NAME : DRM_CONTROL_DEV_NAME, DRM_DIR_NAME, minor);
-    if ((fd = open(buf, O_RDWR, 0)) >= 0)
-	return fd;
-    return -errno;
-}
-
-
-/**
- * Determine whether the DRM kernel driver has been loaded.
- * 
- * \return 1 if the DRM driver is loaded, 0 otherwise.
- *
- * \internal 
- * Determine the presence of the kernel driver by attempting to open the 0
- * minor and get version information.  For backward compatibility with older
- * Linux implementations, /proc/dri is also checked.
- */
-int drmAvailable(void)
-{
-    drmVersionPtr version;
-    int           retval = 0;
-    int           fd;
-
-    if ((fd = drmOpenMinor(0, 1, DRM_NODE_RENDER)) < 0) {
-#ifdef __linux__
-	/* Try proc for backward Linux compatibility */
-	if (!access("/proc/dri/0", R_OK))
-	    return 1;
-#endif
-	return 0;
-    }
-    
-    if ((version = drmGetVersion(fd))) {
-	retval = 1;
-	drmFreeVersion(version);
-    }
-    close(fd);
-
-    return retval;
-}
-
-
-/**
- * Open the device by bus ID.
- *
- * \param busid bus ID.
- *
- * \return a file descriptor on success, or a negative value on error.
- *
- * \internal
- * This function attempts to open every possible minor (up to DRM_MAX_MINOR),
- * comparing the device bus ID with the one supplied.
- *
- * \sa drmOpenMinor() and drmGetBusid().
- */
-static int drmOpenByBusid(const char *busid)
-{
-    int        i;
-    int        fd;
-    const char *buf;
-    drmSetVersion sv;
-
-    drmMsg("drmOpenByBusid: Searching for BusID %s\n", busid);
-    for (i = 0; i < DRM_MAX_MINOR; i++) {
-	fd = drmOpenMinor(i, 1, DRM_NODE_RENDER);
-	drmMsg("drmOpenByBusid: drmOpenMinor returns %d\n", fd);
-	if (fd >= 0) {
-	    sv.drm_di_major = 1;
-	    sv.drm_di_minor = 1;
-	    sv.drm_dd_major = -1;	/* Don't care */
-	    sv.drm_dd_minor = -1;	/* Don't care */
-	    drmSetInterfaceVersion(fd, &sv);
-	    buf = drmGetBusid(fd);
-	    drmMsg("drmOpenByBusid: drmGetBusid reports %s\n", buf);
-	    if (buf && drmMatchBusID(buf, busid)) {
-		drmFreeBusid(buf);
-		return fd;
-	    }
-	    if (buf)
-		drmFreeBusid(buf);
-	    close(fd);
-	}
-    }
-    return -1;
-}
-
-
-/**
- * Open the device by name.
- *
- * \param name driver name.
- * 
- * \return a file descriptor on success, or a negative value on error.
- * 
- * \internal
- * This function opens the first minor number that matches the driver name and
- * isn't already in use.  If it's in use it then it will already have a bus ID
- * assigned.
- * 
- * \sa drmOpenMinor(), drmGetVersion() and drmGetBusid().
- */
-static int drmOpenByName(const char *name)
-{
-    int           i;
-    int           fd;
-    drmVersionPtr version;
-    char *        id;
-    
-    if (!drmAvailable()) {
-	if (!drm_server_info) {
-	    return -1;
-	}
-	else {
-	    /* try to load the kernel module now */
-	    if (!drm_server_info->load_module(name)) {
-		drmMsg("[drm] failed to load kernel module \"%s\"\n", name);
-		return -1;
-	    }
-	}
-    }
-
-    /*
-     * Open the first minor number that matches the driver name and isn't
-     * already in use.  If it's in use it will have a busid assigned already.
-     */
-    for (i = 0; i < DRM_MAX_MINOR; i++) {
-	if ((fd = drmOpenMinor(i, 1, DRM_NODE_RENDER)) >= 0) {
-	    if ((version = drmGetVersion(fd))) {
-		if (!strcmp(version->name, name)) {
-		    drmFreeVersion(version);
-		    id = drmGetBusid(fd);
-		    drmMsg("drmGetBusid returned '%s'\n", id ? id : "NULL");
-		    if (!id || !*id) {
-			if (id)
-			    drmFreeBusid(id);
-			return fd;
-		    } else {
-			drmFreeBusid(id);
-		    }
-		} else {
-		    drmFreeVersion(version);
-		}
-	    }
-	    close(fd);
-	}
-    }
-
-#ifdef __linux__
-    /* Backward-compatibility /proc support */
-    for (i = 0; i < 8; i++) {
-	char proc_name[64], buf[512];
-	char *driver, *pt, *devstring;
-	int  retcode;
-	
-	sprintf(proc_name, "/proc/dri/%d/name", i);
-	if ((fd = open(proc_name, 0, 0)) >= 0) {
-	    retcode = read(fd, buf, sizeof(buf)-1);
-	    close(fd);
-	    if (retcode) {
-		buf[retcode-1] = '\0';
-		for (driver = pt = buf; *pt && *pt != ' '; ++pt)
-		    ;
-		if (*pt) { /* Device is next */
-		    *pt = '\0';
-		    if (!strcmp(driver, name)) { /* Match */
-			for (devstring = ++pt; *pt && *pt != ' '; ++pt)
-			    ;
-			if (*pt) { /* Found busid */
-			    return drmOpenByBusid(++pt);
-			} else { /* No busid */
-			    return drmOpenDevice(strtol(devstring, NULL, 0),i, DRM_NODE_RENDER);
-			}
-		    }
-		}
-	    }
-	}
-    }
-#endif
-
-    return -1;
-}
-
-
-/**
- * Open the DRM device.
- *
- * Looks up the specified name and bus ID, and opens the device found.  The
- * entry in /dev/dri is created if necessary and if called by root.
- *
- * \param name driver name. Not referenced if bus ID is supplied.
- * \param busid bus ID. Zero if not known.
- * 
- * \return a file descriptor on success, or a negative value on error.
- * 
- * \internal
- * It calls drmOpenByBusid() if \p busid is specified or drmOpenByName()
- * otherwise.
- */
-int drmOpen(const char *name, const char *busid)
-{
-    if (!drmAvailable() && name != NULL && drm_server_info) {
-	/* try to load the kernel */
-	if (!drm_server_info->load_module(name)) {
-	    drmMsg("[drm] failed to load kernel module \"%s\"\n", name);
-	    return -1;
-	}
-    }
-
-    if (busid) {
-	int fd = drmOpenByBusid(busid);
-	if (fd >= 0)
-	    return fd;
-    }
-    
-    if (name)
-	return drmOpenByName(name);
-
-    return -1;
-}
-
-int drmOpenControl(int minor)
-{
-    return drmOpenMinor(minor, 0, DRM_NODE_CONTROL);
-}
-
-/**
- * Free the version information returned by drmGetVersion().
- *
- * \param v pointer to the version information.
- *
- * \internal
- * It frees the memory pointed by \p %v as well as all the non-null strings
- * pointers in it.
- */
-void drmFreeVersion(drmVersionPtr v)
-{
-    if (!v)
-	return;
-    drmFree(v->name);
-    drmFree(v->date);
-    drmFree(v->desc);
-    drmFree(v);
-}
-
-
-/**
- * Free the non-public version information returned by the kernel.
- *
- * \param v pointer to the version information.
- *
- * \internal
- * Used by drmGetVersion() to free the memory pointed by \p %v as well as all
- * the non-null strings pointers in it.
- */
-static void drmFreeKernelVersion(drm_version_t *v)
-{
-    if (!v)
-	return;
-    drmFree(v->name);
-    drmFree(v->date);
-    drmFree(v->desc);
-    drmFree(v);
-}
-
-
-/**
- * Copy version information.
- * 
- * \param d destination pointer.
- * \param s source pointer.
- * 
- * \internal
- * Used by drmGetVersion() to translate the information returned by the ioctl
- * interface in a private structure into the public structure counterpart.
- */
-static void drmCopyVersion(drmVersionPtr d, const drm_version_t *s)
-{
-    d->version_major      = s->version_major;
-    d->version_minor      = s->version_minor;
-    d->version_patchlevel = s->version_patchlevel;
-    d->name_len           = s->name_len;
-    d->name               = drmStrdup(s->name);
-    d->date_len           = s->date_len;
-    d->date               = drmStrdup(s->date);
-    d->desc_len           = s->desc_len;
-    d->desc               = drmStrdup(s->desc);
-}
-
-
-/**
- * Query the driver version information.
- *
- * \param fd file descriptor.
- * 
- * \return pointer to a drmVersion structure which should be freed with
- * drmFreeVersion().
- * 
- * \note Similar information is available via /proc/dri.
- * 
- * \internal
- * It gets the version information via successive DRM_IOCTL_VERSION ioctls,
- * first with zeros to get the string lengths, and then the actually strings.
- * It also null-terminates them since they might not be already.
- */
-drmVersionPtr drmGetVersion(int fd)
-{
-    drmVersionPtr retval;
-    drm_version_t *version = drmMalloc(sizeof(*version));
-
-    version->name_len    = 0;
-    version->name        = NULL;
-    version->date_len    = 0;
-    version->date        = NULL;
-    version->desc_len    = 0;
-    version->desc        = NULL;
-
-    if (drmIoctl(fd, DRM_IOCTL_VERSION, version)) {
-	drmFreeKernelVersion(version);
-	return NULL;
-    }
-
-    if (version->name_len)
-	version->name    = drmMalloc(version->name_len + 1);
-    if (version->date_len)
-	version->date    = drmMalloc(version->date_len + 1);
-    if (version->desc_len)
-	version->desc    = drmMalloc(version->desc_len + 1);
-
-    if (drmIoctl(fd, DRM_IOCTL_VERSION, version)) {
-	drmMsg("DRM_IOCTL_VERSION: %s\n", strerror(errno));
-	drmFreeKernelVersion(version);
-	return NULL;
-    }
-
-    /* The results might not be null-terminated strings, so terminate them. */
-    if (version->name_len) version->name[version->name_len] = '\0';
-    if (version->date_len) version->date[version->date_len] = '\0';
-    if (version->desc_len) version->desc[version->desc_len] = '\0';
-
-    retval = drmMalloc(sizeof(*retval));
-    drmCopyVersion(retval, version);
-    drmFreeKernelVersion(version);
-    return retval;
-}
-
-
-/**
- * Get version information for the DRM user space library.
- * 
- * This version number is driver independent.
- * 
- * \param fd file descriptor.
- *
- * \return version information.
- * 
- * \internal
- * This function allocates and fills a drm_version structure with a hard coded
- * version number.
- */
-drmVersionPtr drmGetLibVersion(int fd)
-{
-    drm_version_t *version = drmMalloc(sizeof(*version));
-
-    /* Version history:
-     *   NOTE THIS MUST NOT GO ABOVE VERSION 1.X due to drivers needing it
-     *   revision 1.0.x = original DRM interface with no drmGetLibVersion
-     *                    entry point and many drm<Device> extensions
-     *   revision 1.1.x = added drmCommand entry points for device extensions
-     *                    added drmGetLibVersion to identify libdrm.a version
-     *   revision 1.2.x = added drmSetInterfaceVersion
-     *                    modified drmOpen to handle both busid and name
-     *   revision 1.3.x = added server + memory manager
-     */
-    version->version_major      = 1;
-    version->version_minor      = 3;
-    version->version_patchlevel = 0;
-
-    return (drmVersionPtr)version;
-}
-
-
-/**
- * Free the bus ID information.
- *
- * \param busid bus ID information string as given by drmGetBusid().
- *
- * \internal
- * This function is just frees the memory pointed by \p busid.
- */
-void drmFreeBusid(const char *busid)
-{
-    drmFree((void *)busid);
-}
-
-
-/**
- * Get the bus ID of the device.
- *
- * \param fd file descriptor.
- *
- * \return bus ID string.
- *
- * \internal
- * This function gets the bus ID via successive DRM_IOCTL_GET_UNIQUE ioctls to
- * get the string length and data, passing the arguments in a drm_unique
- * structure.
- */
-char *drmGetBusid(int fd)
-{
-    drm_unique_t u;
-
-    u.unique_len = 0;
-    u.unique     = NULL;
-
-    if (drmIoctl(fd, DRM_IOCTL_GET_UNIQUE, &u))
-	return NULL;
-    u.unique = drmMalloc(u.unique_len + 1);
-    if (drmIoctl(fd, DRM_IOCTL_GET_UNIQUE, &u))
-	return NULL;
-    u.unique[u.unique_len] = '\0';
-
-    return u.unique;
-}
-
-
-/**
- * Set the bus ID of the device.
- *
- * \param fd file descriptor.
- * \param busid bus ID string.
- *
- * \return zero on success, negative on failure.
- *
- * \internal
- * This function is a wrapper around the DRM_IOCTL_SET_UNIQUE ioctl, passing
- * the arguments in a drm_unique structure.
- */
-int drmSetBusid(int fd, const char *busid)
-{
-    drm_unique_t u;
-
-    u.unique     = (char *)busid;
-    u.unique_len = strlen(busid);
-
-    if (drmIoctl(fd, DRM_IOCTL_SET_UNIQUE, &u)) {
-	return -errno;
-    }
-    return 0;
-}
-
-int drmGetMagic(int fd, drm_magic_t * magic)
-{
-    drm_auth_t auth;
-
-    *magic = 0;
-    if (drmIoctl(fd, DRM_IOCTL_GET_MAGIC, &auth))
-	return -errno;
-    *magic = auth.magic;
-    return 0;
-}
-
-int drmAuthMagic(int fd, drm_magic_t magic)
-{
-    drm_auth_t auth;
-
-    auth.magic = magic;
-    if (drmIoctl(fd, DRM_IOCTL_AUTH_MAGIC, &auth))
-	return -errno;
-    return 0;
-}
-
-/**
- * Specifies a range of memory that is available for mapping by a
- * non-root process.
- *
- * \param fd file descriptor.
- * \param offset usually the physical address. The actual meaning depends of
- * the \p type parameter. See below.
- * \param size of the memory in bytes.
- * \param type type of the memory to be mapped.
- * \param flags combination of several flags to modify the function actions.
- * \param handle will be set to a value that may be used as the offset
- * parameter for mmap().
- * 
- * \return zero on success or a negative value on error.
- *
- * \par Mapping the frame buffer
- * For the frame buffer
- * - \p offset will be the physical address of the start of the frame buffer,
- * - \p size will be the size of the frame buffer in bytes, and
- * - \p type will be DRM_FRAME_BUFFER.
- *
- * \par
- * The area mapped will be uncached. If MTRR support is available in the
- * kernel, the frame buffer area will be set to write combining. 
- *
- * \par Mapping the MMIO register area
- * For the MMIO register area,
- * - \p offset will be the physical address of the start of the register area,
- * - \p size will be the size of the register area bytes, and
- * - \p type will be DRM_REGISTERS.
- * \par
- * The area mapped will be uncached. 
- * 
- * \par Mapping the SAREA
- * For the SAREA,
- * - \p offset will be ignored and should be set to zero,
- * - \p size will be the desired size of the SAREA in bytes,
- * - \p type will be DRM_SHM.
- * 
- * \par
- * A shared memory area of the requested size will be created and locked in
- * kernel memory. This area may be mapped into client-space by using the handle
- * returned. 
- * 
- * \note May only be called by root.
- *
- * \internal
- * This function is a wrapper around the DRM_IOCTL_ADD_MAP ioctl, passing
- * the arguments in a drm_map structure.
- */
-int drmAddMap(int fd, drm_handle_t offset, drmSize size, drmMapType type,
-	      drmMapFlags flags, drm_handle_t *handle)
-{
-    drm_map_t map;
-
-    map.offset  = offset;
-    map.size    = size;
-    map.handle  = 0;
-    map.type    = type;
-    map.flags   = flags;
-    if (drmIoctl(fd, DRM_IOCTL_ADD_MAP, &map))
-	return -errno;
-    if (handle)
-	*handle = (drm_handle_t)map.handle;
-    return 0;
-}
-
-int drmRmMap(int fd, drm_handle_t handle)
-{
-    drm_map_t map;
-
-    map.handle = (void *)handle;
-
-    if(drmIoctl(fd, DRM_IOCTL_RM_MAP, &map))
-	return -errno;
-    return 0;
-}
-
-/**
- * Make buffers available for DMA transfers.
- * 
- * \param fd file descriptor.
- * \param count number of buffers.
- * \param size size of each buffer.
- * \param flags buffer allocation flags.
- * \param agp_offset offset in the AGP aperture 
- *
- * \return number of buffers allocated, negative on error.
- *
- * \internal
- * This function is a wrapper around DRM_IOCTL_ADD_BUFS ioctl.
- *
- * \sa drm_buf_desc.
- */
-int drmAddBufs(int fd, int count, int size, drmBufDescFlags flags,
-	       int agp_offset)
-{
-    drm_buf_desc_t request;
-
-    request.count     = count;
-    request.size      = size;
-    request.low_mark  = 0;
-    request.high_mark = 0;
-    request.flags     = flags;
-    request.agp_start = agp_offset;
-
-    if (drmIoctl(fd, DRM_IOCTL_ADD_BUFS, &request))
-	return -errno;
-    return request.count;
-}
-
-int drmMarkBufs(int fd, double low, double high)
-{
-    drm_buf_info_t info;
-    int            i;
-
-    info.count = 0;
-    info.list  = NULL;
-
-    if (drmIoctl(fd, DRM_IOCTL_INFO_BUFS, &info))
-	return -EINVAL;
-
-    if (!info.count)
-	return -EINVAL;
-
-    if (!(info.list = drmMalloc(info.count * sizeof(*info.list))))
-	return -ENOMEM;
-
-    if (drmIoctl(fd, DRM_IOCTL_INFO_BUFS, &info)) {
-	int retval = -errno;
-	drmFree(info.list);
-	return retval;
-    }
-
-    for (i = 0; i < info.count; i++) {
-	info.list[i].low_mark  = low  * info.list[i].count;
-	info.list[i].high_mark = high * info.list[i].count;
-	if (drmIoctl(fd, DRM_IOCTL_MARK_BUFS, &info.list[i])) {
-	    int retval = -errno;
-	    drmFree(info.list);
-	    return retval;
-	}
-    }
-    drmFree(info.list);
-
-    return 0;
-}
-
-/**
- * Free buffers.
- *
- * \param fd file descriptor.
- * \param count number of buffers to free.
- * \param list list of buffers to be freed.
- *
- * \return zero on success, or a negative value on failure.
- * 
- * \note This function is primarily used for debugging.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_FREE_BUFS ioctl, passing
- * the arguments in a drm_buf_free structure.
- */
-int drmFreeBufs(int fd, int count, int *list)
-{
-    drm_buf_free_t request;
-
-    request.count = count;
-    request.list  = list;
-    if (drmIoctl(fd, DRM_IOCTL_FREE_BUFS, &request))
-	return -errno;
-    return 0;
-}
-
-
-/**
- * Close the device.
- *
- * \param fd file descriptor.
- *
- * \internal
- * This function closes the file descriptor.
- */
-int drmClose(int fd)
-{
-    unsigned long key    = drmGetKeyFromFd(fd);
-    drmHashEntry  *entry = drmGetEntry(fd);
-
-    drmHashDestroy(entry->tagTable);
-    entry->fd       = 0;
-    entry->f        = NULL;
-    entry->tagTable = NULL;
-
-    drmHashDelete(drmHashTable, key);
-    drmFree(entry);
-
-    return close(fd);
-}
-
-
-/**
- * Map a region of memory.
- *
- * \param fd file descriptor.
- * \param handle handle returned by drmAddMap().
- * \param size size in bytes. Must match the size used by drmAddMap().
- * \param address will contain the user-space virtual address where the mapping
- * begins.
- *
- * \return zero on success, or a negative value on failure.
- * 
- * \internal
- * This function is a wrapper for mmap().
- */
-int drmMap(int fd, drm_handle_t handle, drmSize size, drmAddressPtr address)
-{
-    static unsigned long pagesize_mask = 0;
-
-    if (fd < 0)
-	return -EINVAL;
-
-    if (!pagesize_mask)
-	pagesize_mask = getpagesize() - 1;
-
-    size = (size + pagesize_mask) & ~pagesize_mask;
-
-    *address = mmap(0, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, handle);
-    if (*address == MAP_FAILED)
-	return -errno;
-    return 0;
-}
-
-
-/**
- * Unmap mappings obtained with drmMap().
- *
- * \param address address as given by drmMap().
- * \param size size in bytes. Must match the size used by drmMap().
- * 
- * \return zero on success, or a negative value on failure.
- *
- * \internal
- * This function is a wrapper for munmap().
- */
-int drmUnmap(drmAddress address, drmSize size)
-{
-    return munmap(address, size);
-}
-
-drmBufInfoPtr drmGetBufInfo(int fd)
-{
-    drm_buf_info_t info;
-    drmBufInfoPtr  retval;
-    int            i;
-
-    info.count = 0;
-    info.list  = NULL;
-
-    if (drmIoctl(fd, DRM_IOCTL_INFO_BUFS, &info))
-	return NULL;
-
-    if (info.count) {
-	if (!(info.list = drmMalloc(info.count * sizeof(*info.list))))
-	    return NULL;
-
-	if (drmIoctl(fd, DRM_IOCTL_INFO_BUFS, &info)) {
-	    drmFree(info.list);
-	    return NULL;
-	}
-
-	retval = drmMalloc(sizeof(*retval));
-	retval->count = info.count;
-	retval->list  = drmMalloc(info.count * sizeof(*retval->list));
-	for (i = 0; i < info.count; i++) {
-	    retval->list[i].count     = info.list[i].count;
-	    retval->list[i].size      = info.list[i].size;
-	    retval->list[i].low_mark  = info.list[i].low_mark;
-	    retval->list[i].high_mark = info.list[i].high_mark;
-	}
-	drmFree(info.list);
-	return retval;
-    }
-    return NULL;
-}
-
-/**
- * Map all DMA buffers into client-virtual space.
- *
- * \param fd file descriptor.
- *
- * \return a pointer to a ::drmBufMap structure.
- *
- * \note The client may not use these buffers until obtaining buffer indices
- * with drmDMA().
- * 
- * \internal
- * This function calls the DRM_IOCTL_MAP_BUFS ioctl and copies the returned
- * information about the buffers in a drm_buf_map structure into the
- * client-visible data structures.
- */ 
-drmBufMapPtr drmMapBufs(int fd)
-{
-    drm_buf_map_t bufs;
-    drmBufMapPtr  retval;
-    int           i;
-
-    bufs.count = 0;
-    bufs.list  = NULL;
-    bufs.virtual = NULL;
-    if (drmIoctl(fd, DRM_IOCTL_MAP_BUFS, &bufs))
-	return NULL;
-
-    if (!bufs.count)
-	return NULL;
-
-	if (!(bufs.list = drmMalloc(bufs.count * sizeof(*bufs.list))))
-	    return NULL;
-
-	if (drmIoctl(fd, DRM_IOCTL_MAP_BUFS, &bufs)) {
-	    drmFree(bufs.list);
-	    return NULL;
-	}
-
-	retval = drmMalloc(sizeof(*retval));
-	retval->count = bufs.count;
-	retval->list  = drmMalloc(bufs.count * sizeof(*retval->list));
-	for (i = 0; i < bufs.count; i++) {
-	    retval->list[i].idx     = bufs.list[i].idx;
-	    retval->list[i].total   = bufs.list[i].total;
-	    retval->list[i].used    = 0;
-	    retval->list[i].address = bufs.list[i].address;
-	}
-
-	drmFree(bufs.list);
-	
-	return retval;
-}
-
-
-/**
- * Unmap buffers allocated with drmMapBufs().
- *
- * \return zero on success, or negative value on failure.
- *
- * \internal
- * Calls munmap() for every buffer stored in \p bufs and frees the
- * memory allocated by drmMapBufs().
- */
-int drmUnmapBufs(drmBufMapPtr bufs)
-{
-    int i;
-
-    for (i = 0; i < bufs->count; i++) {
-	munmap(bufs->list[i].address, bufs->list[i].total);
-    }
-
-    drmFree(bufs->list);
-    drmFree(bufs);
-	
-    return 0;
-}
-
-
-#define DRM_DMA_RETRY		16
-
-/**
- * Reserve DMA buffers.
- *
- * \param fd file descriptor.
- * \param request 
- * 
- * \return zero on success, or a negative value on failure.
- *
- * \internal
- * Assemble the arguments into a drm_dma structure and keeps issuing the
- * DRM_IOCTL_DMA ioctl until success or until maximum number of retries.
- */
-int drmDMA(int fd, drmDMAReqPtr request)
-{
-    drm_dma_t dma;
-    int ret, i = 0;
-
-    dma.context         = request->context;
-    dma.send_count      = request->send_count;
-    dma.send_indices    = request->send_list;
-    dma.send_sizes      = request->send_sizes;
-    dma.flags           = request->flags;
-    dma.request_count   = request->request_count;
-    dma.request_size    = request->request_size;
-    dma.request_indices = request->request_list;
-    dma.request_sizes   = request->request_sizes;
-    dma.granted_count   = 0;
-
-    do {
-	ret = ioctl( fd, DRM_IOCTL_DMA, &dma );
-    } while ( ret && errno == EAGAIN && i++ < DRM_DMA_RETRY );
-
-    if ( ret == 0 ) {
-	request->granted_count = dma.granted_count;
-	return 0;
-    } else {
-	return -errno;
-    }
-}
-
-
-/**
- * Obtain heavyweight hardware lock.
- *
- * \param fd file descriptor.
- * \param context context.
- * \param flags flags that determine the sate of the hardware when the function
- * returns.
- * 
- * \return always zero.
- * 
- * \internal
- * This function translates the arguments into a drm_lock structure and issue
- * the DRM_IOCTL_LOCK ioctl until the lock is successfully acquired.
- */
-int drmGetLock(int fd, drm_context_t context, drmLockFlags flags)
-{
-    drm_lock_t lock;
-
-    lock.context = context;
-    lock.flags   = 0;
-    if (flags & DRM_LOCK_READY)      lock.flags |= _DRM_LOCK_READY;
-    if (flags & DRM_LOCK_QUIESCENT)  lock.flags |= _DRM_LOCK_QUIESCENT;
-    if (flags & DRM_LOCK_FLUSH)      lock.flags |= _DRM_LOCK_FLUSH;
-    if (flags & DRM_LOCK_FLUSH_ALL)  lock.flags |= _DRM_LOCK_FLUSH_ALL;
-    if (flags & DRM_HALT_ALL_QUEUES) lock.flags |= _DRM_HALT_ALL_QUEUES;
-    if (flags & DRM_HALT_CUR_QUEUES) lock.flags |= _DRM_HALT_CUR_QUEUES;
-
-    while (drmIoctl(fd, DRM_IOCTL_LOCK, &lock))
-	;
-    return 0;
-}
-
-/**
- * Release the hardware lock.
- *
- * \param fd file descriptor.
- * \param context context.
- * 
- * \return zero on success, or a negative value on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_UNLOCK ioctl, passing the
- * argument in a drm_lock structure.
- */
-int drmUnlock(int fd, drm_context_t context)
-{
-    drm_lock_t lock;
-
-    lock.context = context;
-    lock.flags   = 0;
-    return drmIoctl(fd, DRM_IOCTL_UNLOCK, &lock);
-}
-
-drm_context_t *drmGetReservedContextList(int fd, int *count)
-{
-    drm_ctx_res_t res;
-    drm_ctx_t     *list;
-    drm_context_t * retval;
-    int           i;
-
-    res.count    = 0;
-    res.contexts = NULL;
-    if (drmIoctl(fd, DRM_IOCTL_RES_CTX, &res))
-	return NULL;
-
-    if (!res.count)
-	return NULL;
-
-    if (!(list   = drmMalloc(res.count * sizeof(*list))))
-	return NULL;
-    if (!(retval = drmMalloc(res.count * sizeof(*retval)))) {
-	drmFree(list);
-	return NULL;
-    }
-
-    res.contexts = list;
-    if (drmIoctl(fd, DRM_IOCTL_RES_CTX, &res))
-	return NULL;
-
-    for (i = 0; i < res.count; i++)
-	retval[i] = list[i].handle;
-    drmFree(list);
-
-    *count = res.count;
-    return retval;
-}
-
-void drmFreeReservedContextList(drm_context_t *pt)
-{
-    drmFree(pt);
-}
-
-/**
- * Create context.
- *
- * Used by the X server during GLXContext initialization. This causes
- * per-context kernel-level resources to be allocated.
- *
- * \param fd file descriptor.
- * \param handle is set on success. To be used by the client when requesting DMA
- * dispatch with drmDMA().
- * 
- * \return zero on success, or a negative value on failure.
- * 
- * \note May only be called by root.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_ADD_CTX ioctl, passing the
- * argument in a drm_ctx structure.
- */
-int drmCreateContext(int fd, drm_context_t *handle)
-{
-    drm_ctx_t ctx;
-
-    ctx.flags = 0;	/* Modified with functions below */
-    if (drmIoctl(fd, DRM_IOCTL_ADD_CTX, &ctx))
-	return -errno;
-    *handle = ctx.handle;
-    return 0;
-}
-
-int drmSwitchToContext(int fd, drm_context_t context)
-{
-    drm_ctx_t ctx;
-
-    ctx.handle = context;
-    if (drmIoctl(fd, DRM_IOCTL_SWITCH_CTX, &ctx))
-	return -errno;
-    return 0;
-}
-
-int drmSetContextFlags(int fd, drm_context_t context, drm_context_tFlags flags)
-{
-    drm_ctx_t ctx;
-
-    /*
-     * Context preserving means that no context switches are done between DMA
-     * buffers from one context and the next.  This is suitable for use in the
-     * X server (which promises to maintain hardware context), or in the
-     * client-side library when buffers are swapped on behalf of two threads.
-     */
-    ctx.handle = context;
-    ctx.flags  = 0;
-    if (flags & DRM_CONTEXT_PRESERVED)
-	ctx.flags |= _DRM_CONTEXT_PRESERVED;
-    if (flags & DRM_CONTEXT_2DONLY)
-	ctx.flags |= _DRM_CONTEXT_2DONLY;
-    if (drmIoctl(fd, DRM_IOCTL_MOD_CTX, &ctx))
-	return -errno;
-    return 0;
-}
-
-int drmGetContextFlags(int fd, drm_context_t context,
-                       drm_context_tFlagsPtr flags)
-{
-    drm_ctx_t ctx;
-
-    ctx.handle = context;
-    if (drmIoctl(fd, DRM_IOCTL_GET_CTX, &ctx))
-	return -errno;
-    *flags = 0;
-    if (ctx.flags & _DRM_CONTEXT_PRESERVED)
-	*flags |= DRM_CONTEXT_PRESERVED;
-    if (ctx.flags & _DRM_CONTEXT_2DONLY)
-	*flags |= DRM_CONTEXT_2DONLY;
-    return 0;
-}
-
-/**
- * Destroy context.
- *
- * Free any kernel-level resources allocated with drmCreateContext() associated
- * with the context.
- * 
- * \param fd file descriptor.
- * \param handle handle given by drmCreateContext().
- * 
- * \return zero on success, or a negative value on failure.
- * 
- * \note May only be called by root.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_RM_CTX ioctl, passing the
- * argument in a drm_ctx structure.
- */
-int drmDestroyContext(int fd, drm_context_t handle)
-{
-    drm_ctx_t ctx;
-    ctx.handle = handle;
-    if (drmIoctl(fd, DRM_IOCTL_RM_CTX, &ctx))
-	return -errno;
-    return 0;
-}
-
-int drmCreateDrawable(int fd, drm_drawable_t *handle)
-{
-    drm_draw_t draw;
-    if (drmIoctl(fd, DRM_IOCTL_ADD_DRAW, &draw))
-	return -errno;
-    *handle = draw.handle;
-    return 0;
-}
-
-int drmDestroyDrawable(int fd, drm_drawable_t handle)
-{
-    drm_draw_t draw;
-    draw.handle = handle;
-    if (drmIoctl(fd, DRM_IOCTL_RM_DRAW, &draw))
-	return -errno;
-    return 0;
-}
-
-int drmUpdateDrawableInfo(int fd, drm_drawable_t handle,
-			   drm_drawable_info_type_t type, unsigned int num,
-			   void *data)
-{
-    drm_update_draw_t update;
-
-    update.handle = handle;
-    update.type = type;
-    update.num = num;
-    update.data = (unsigned long long)(unsigned long)data;
-
-    if (drmIoctl(fd, DRM_IOCTL_UPDATE_DRAW, &update))
-	return -errno;
-
-    return 0;
-}
-
-/**
- * Acquire the AGP device.
- *
- * Must be called before any of the other AGP related calls.
- *
- * \param fd file descriptor.
- * 
- * \return zero on success, or a negative value on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_AGP_ACQUIRE ioctl.
- */
-int drmAgpAcquire(int fd)
-{
-    if (drmIoctl(fd, DRM_IOCTL_AGP_ACQUIRE, NULL))
-	return -errno;
-    return 0;
-}
-
-
-/**
- * Release the AGP device.
- *
- * \param fd file descriptor.
- * 
- * \return zero on success, or a negative value on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_AGP_RELEASE ioctl.
- */
-int drmAgpRelease(int fd)
-{
-    if (drmIoctl(fd, DRM_IOCTL_AGP_RELEASE, NULL))
-	return -errno;
-    return 0;
-}
-
-
-/**
- * Set the AGP mode.
- *
- * \param fd file descriptor.
- * \param mode AGP mode.
- * 
- * \return zero on success, or a negative value on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_AGP_ENABLE ioctl, passing the
- * argument in a drm_agp_mode structure.
- */
-int drmAgpEnable(int fd, unsigned long mode)
-{
-    drm_agp_mode_t m;
-
-    m.mode = mode;
-    if (drmIoctl(fd, DRM_IOCTL_AGP_ENABLE, &m))
-	return -errno;
-    return 0;
-}
-
-
-/**
- * Allocate a chunk of AGP memory.
- *
- * \param fd file descriptor.
- * \param size requested memory size in bytes. Will be rounded to page boundary.
- * \param type type of memory to allocate.
- * \param address if not zero, will be set to the physical address of the
- * allocated memory.
- * \param handle on success will be set to a handle of the allocated memory.
- * 
- * \return zero on success, or a negative value on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_AGP_ALLOC ioctl, passing the
- * arguments in a drm_agp_buffer structure.
- */
-int drmAgpAlloc(int fd, unsigned long size, unsigned long type,
-		unsigned long *address, drm_handle_t *handle)
-{
-    drm_agp_buffer_t b;
-
-    *handle = DRM_AGP_NO_HANDLE;
-    b.size   = size;
-    b.handle = 0;
-    b.type   = type;
-    if (drmIoctl(fd, DRM_IOCTL_AGP_ALLOC, &b))
-	return -errno;
-    if (address != 0UL)
-	*address = b.physical;
-    *handle = b.handle;
-    return 0;
-}
-
-
-/**
- * Free a chunk of AGP memory.
- *
- * \param fd file descriptor.
- * \param handle handle to the allocated memory, as given by drmAgpAllocate().
- * 
- * \return zero on success, or a negative value on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_AGP_FREE ioctl, passing the
- * argument in a drm_agp_buffer structure.
- */
-int drmAgpFree(int fd, drm_handle_t handle)
-{
-    drm_agp_buffer_t b;
-
-    b.size   = 0;
-    b.handle = handle;
-    if (drmIoctl(fd, DRM_IOCTL_AGP_FREE, &b))
-	return -errno;
-    return 0;
-}
-
-
-/**
- * Bind a chunk of AGP memory.
- *
- * \param fd file descriptor.
- * \param handle handle to the allocated memory, as given by drmAgpAllocate().
- * \param offset offset in bytes. It will round to page boundary.
- * 
- * \return zero on success, or a negative value on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_AGP_BIND ioctl, passing the
- * argument in a drm_agp_binding structure.
- */
-int drmAgpBind(int fd, drm_handle_t handle, unsigned long offset)
-{
-    drm_agp_binding_t b;
-
-    b.handle = handle;
-    b.offset = offset;
-    if (drmIoctl(fd, DRM_IOCTL_AGP_BIND, &b))
-	return -errno;
-    return 0;
-}
-
-
-/**
- * Unbind a chunk of AGP memory.
- *
- * \param fd file descriptor.
- * \param handle handle to the allocated memory, as given by drmAgpAllocate().
- * 
- * \return zero on success, or a negative value on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_AGP_UNBIND ioctl, passing
- * the argument in a drm_agp_binding structure.
- */
-int drmAgpUnbind(int fd, drm_handle_t handle)
-{
-    drm_agp_binding_t b;
-
-    b.handle = handle;
-    b.offset = 0;
-    if (drmIoctl(fd, DRM_IOCTL_AGP_UNBIND, &b))
-	return -errno;
-    return 0;
-}
-
-
-/**
- * Get AGP driver major version number.
- *
- * \param fd file descriptor.
- * 
- * \return major version number on success, or a negative value on failure..
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the
- * necessary information in a drm_agp_info structure.
- */
-int drmAgpVersionMajor(int fd)
-{
-    drm_agp_info_t i;
-
-    if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
-	return -errno;
-    return i.agp_version_major;
-}
-
-
-/**
- * Get AGP driver minor version number.
- *
- * \param fd file descriptor.
- * 
- * \return minor version number on success, or a negative value on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the
- * necessary information in a drm_agp_info structure.
- */
-int drmAgpVersionMinor(int fd)
-{
-    drm_agp_info_t i;
-
-    if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
-	return -errno;
-    return i.agp_version_minor;
-}
-
-
-/**
- * Get AGP mode.
- *
- * \param fd file descriptor.
- * 
- * \return mode on success, or zero on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the
- * necessary information in a drm_agp_info structure.
- */
-unsigned long drmAgpGetMode(int fd)
-{
-    drm_agp_info_t i;
-
-    if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
-	return 0;
-    return i.mode;
-}
-
-
-/**
- * Get AGP aperture base.
- *
- * \param fd file descriptor.
- * 
- * \return aperture base on success, zero on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the
- * necessary information in a drm_agp_info structure.
- */
-unsigned long drmAgpBase(int fd)
-{
-    drm_agp_info_t i;
-
-    if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
-	return 0;
-    return i.aperture_base;
-}
-
-
-/**
- * Get AGP aperture size.
- *
- * \param fd file descriptor.
- * 
- * \return aperture size on success, zero on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the
- * necessary information in a drm_agp_info structure.
- */
-unsigned long drmAgpSize(int fd)
-{
-    drm_agp_info_t i;
-
-    if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
-	return 0;
-    return i.aperture_size;
-}
-
-
-/**
- * Get used AGP memory.
- *
- * \param fd file descriptor.
- * 
- * \return memory used on success, or zero on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the
- * necessary information in a drm_agp_info structure.
- */
-unsigned long drmAgpMemoryUsed(int fd)
-{
-    drm_agp_info_t i;
-
-    if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
-	return 0;
-    return i.memory_used;
-}
-
-
-/**
- * Get available AGP memory.
- *
- * \param fd file descriptor.
- * 
- * \return memory available on success, or zero on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the
- * necessary information in a drm_agp_info structure.
- */
-unsigned long drmAgpMemoryAvail(int fd)
-{
-    drm_agp_info_t i;
-
-    if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
-	return 0;
-    return i.memory_allowed;
-}
-
-
-/**
- * Get hardware vendor ID.
- *
- * \param fd file descriptor.
- * 
- * \return vendor ID on success, or zero on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the
- * necessary information in a drm_agp_info structure.
- */
-unsigned int drmAgpVendorId(int fd)
-{
-    drm_agp_info_t i;
-
-    if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
-	return 0;
-    return i.id_vendor;
-}
-
-
-/**
- * Get hardware device ID.
- *
- * \param fd file descriptor.
- * 
- * \return zero on success, or zero on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the
- * necessary information in a drm_agp_info structure.
- */
-unsigned int drmAgpDeviceId(int fd)
-{
-    drm_agp_info_t i;
-
-    if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
-	return 0;
-    return i.id_device;
-}
-
-int drmScatterGatherAlloc(int fd, unsigned long size, drm_handle_t *handle)
-{
-    drm_scatter_gather_t sg;
-
-    *handle = 0;
-    sg.size   = size;
-    sg.handle = 0;
-    if (drmIoctl(fd, DRM_IOCTL_SG_ALLOC, &sg))
-	return -errno;
-    *handle = sg.handle;
-    return 0;
-}
-
-int drmScatterGatherFree(int fd, drm_handle_t handle)
-{
-    drm_scatter_gather_t sg;
-
-    sg.size   = 0;
-    sg.handle = handle;
-    if (drmIoctl(fd, DRM_IOCTL_SG_FREE, &sg))
-	return -errno;
-    return 0;
-}
-
-/**
- * Wait for VBLANK.
- *
- * \param fd file descriptor.
- * \param vbl pointer to a drmVBlank structure.
- * 
- * \return zero on success, or a negative value on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_WAIT_VBLANK ioctl.
- */
-int drmWaitVBlank(int fd, drmVBlankPtr vbl)
-{
-    struct timespec timeout, cur;
-    int ret;
-
-    ret = clock_gettime(CLOCK_MONOTONIC, &timeout);
-    if (ret < 0) {
-	fprintf(stderr, "clock_gettime failed: %s\n", strerror(ret));
-	goto out;
-    }
-    timeout.tv_sec++;
-
-    do {
-       ret = ioctl(fd, DRM_IOCTL_WAIT_VBLANK, vbl);
-       vbl->request.type &= ~DRM_VBLANK_RELATIVE;
-       if (ret && errno == EINTR) {
-	       clock_gettime(CLOCK_MONOTONIC, &cur);
-	       /* Timeout after 1s */
-	       if (cur.tv_sec > timeout.tv_sec + 1 ||
-		   (cur.tv_sec == timeout.tv_sec && cur.tv_nsec >=
-		    timeout.tv_nsec)) {
-		       errno = EBUSY;
-		       ret = -1;
-		       break;
-	       }
-       }
-    } while (ret && errno == EINTR);
-
-out:
-    return ret;
-}
-
-int drmError(int err, const char *label)
-{
-    switch (err) {
-    case DRM_ERR_NO_DEVICE:
-	fprintf(stderr, "%s: no device\n", label);
-	break;
-    case DRM_ERR_NO_ACCESS:
-	fprintf(stderr, "%s: no access\n", label);
-	break;
-    case DRM_ERR_NOT_ROOT:
-	fprintf(stderr, "%s: not root\n", label);
-	break;
-    case DRM_ERR_INVALID:
-	fprintf(stderr, "%s: invalid args\n", label);
-	break;
-    default:
-	if (err < 0)
-	    err = -err;
-	fprintf( stderr, "%s: error %d (%s)\n", label, err, strerror(err) );
-	break;
-    }
-
-    return 1;
-}
-
-/**
- * Install IRQ handler.
- *
- * \param fd file descriptor.
- * \param irq IRQ number.
- * 
- * \return zero on success, or a negative value on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_CONTROL ioctl, passing the
- * argument in a drm_control structure.
- */
-int drmCtlInstHandler(int fd, int irq)
-{
-    drm_control_t ctl;
-
-    ctl.func  = DRM_INST_HANDLER;
-    ctl.irq   = irq;
-    if (drmIoctl(fd, DRM_IOCTL_CONTROL, &ctl))
-	return -errno;
-    return 0;
-}
-
-
-/**
- * Uninstall IRQ handler.
- *
- * \param fd file descriptor.
- * 
- * \return zero on success, or a negative value on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_CONTROL ioctl, passing the
- * argument in a drm_control structure.
- */
-int drmCtlUninstHandler(int fd)
-{
-    drm_control_t ctl;
-
-    ctl.func  = DRM_UNINST_HANDLER;
-    ctl.irq   = 0;
-    if (drmIoctl(fd, DRM_IOCTL_CONTROL, &ctl))
-	return -errno;
-    return 0;
-}
-
-int drmFinish(int fd, int context, drmLockFlags flags)
-{
-    drm_lock_t lock;
-
-    lock.context = context;
-    lock.flags   = 0;
-    if (flags & DRM_LOCK_READY)      lock.flags |= _DRM_LOCK_READY;
-    if (flags & DRM_LOCK_QUIESCENT)  lock.flags |= _DRM_LOCK_QUIESCENT;
-    if (flags & DRM_LOCK_FLUSH)      lock.flags |= _DRM_LOCK_FLUSH;
-    if (flags & DRM_LOCK_FLUSH_ALL)  lock.flags |= _DRM_LOCK_FLUSH_ALL;
-    if (flags & DRM_HALT_ALL_QUEUES) lock.flags |= _DRM_HALT_ALL_QUEUES;
-    if (flags & DRM_HALT_CUR_QUEUES) lock.flags |= _DRM_HALT_CUR_QUEUES;
-    if (drmIoctl(fd, DRM_IOCTL_FINISH, &lock))
-	return -errno;
-    return 0;
-}
-
-/**
- * Get IRQ from bus ID.
- *
- * \param fd file descriptor.
- * \param busnum bus number.
- * \param devnum device number.
- * \param funcnum function number.
- * 
- * \return IRQ number on success, or a negative value on failure.
- * 
- * \internal
- * This function is a wrapper around the DRM_IOCTL_IRQ_BUSID ioctl, passing the
- * arguments in a drm_irq_busid structure.
- */
-int drmGetInterruptFromBusID(int fd, int busnum, int devnum, int funcnum)
-{
-    drm_irq_busid_t p;
-
-    p.busnum  = busnum;
-    p.devnum  = devnum;
-    p.funcnum = funcnum;
-    if (drmIoctl(fd, DRM_IOCTL_IRQ_BUSID, &p))
-	return -errno;
-    return p.irq;
-}
-
-int drmAddContextTag(int fd, drm_context_t context, void *tag)
-{
-    drmHashEntry  *entry = drmGetEntry(fd);
-
-    if (drmHashInsert(entry->tagTable, context, tag)) {
-	drmHashDelete(entry->tagTable, context);
-	drmHashInsert(entry->tagTable, context, tag);
-    }
-    return 0;
-}
-
-int drmDelContextTag(int fd, drm_context_t context)
-{
-    drmHashEntry  *entry = drmGetEntry(fd);
-
-    return drmHashDelete(entry->tagTable, context);
-}
-
-void *drmGetContextTag(int fd, drm_context_t context)
-{
-    drmHashEntry  *entry = drmGetEntry(fd);
-    void          *value;
-
-    if (drmHashLookup(entry->tagTable, context, &value))
-	return NULL;
-
-    return value;
-}
-
-int drmAddContextPrivateMapping(int fd, drm_context_t ctx_id,
-                                drm_handle_t handle)
-{
-    drm_ctx_priv_map_t map;
-
-    map.ctx_id = ctx_id;
-    map.handle = (void *)handle;
-
-    if (drmIoctl(fd, DRM_IOCTL_SET_SAREA_CTX, &map))
-	return -errno;
-    return 0;
-}
-
-int drmGetContextPrivateMapping(int fd, drm_context_t ctx_id,
-                                drm_handle_t *handle)
-{
-    drm_ctx_priv_map_t map;
-
-    map.ctx_id = ctx_id;
-
-    if (drmIoctl(fd, DRM_IOCTL_GET_SAREA_CTX, &map))
-	return -errno;
-    if (handle)
-	*handle = (drm_handle_t)map.handle;
-
-    return 0;
-}
-
-int drmGetMap(int fd, int idx, drm_handle_t *offset, drmSize *size,
-	      drmMapType *type, drmMapFlags *flags, drm_handle_t *handle,
-	      int *mtrr)
-{
-    drm_map_t map;
-
-    map.offset = idx;
-    if (drmIoctl(fd, DRM_IOCTL_GET_MAP, &map))
-	return -errno;
-    *offset = map.offset;
-    *size   = map.size;
-    *type   = map.type;
-    *flags  = map.flags;
-    *handle = (unsigned long)map.handle;
-    *mtrr   = map.mtrr;
-    return 0;
-}
-
-int drmGetClient(int fd, int idx, int *auth, int *pid, int *uid,
-		 unsigned long *magic, unsigned long *iocs)
-{
-    drm_client_t client;
-
-    client.idx = idx;
-    if (drmIoctl(fd, DRM_IOCTL_GET_CLIENT, &client))
-	return -errno;
-    *auth      = client.auth;
-    *pid       = client.pid;
-    *uid       = client.uid;
-    *magic     = client.magic;
-    *iocs      = client.iocs;
-    return 0;
-}
-
-int drmGetStats(int fd, drmStatsT *stats)
-{
-    drm_stats_t s;
-    int         i;
-
-    if (drmIoctl(fd, DRM_IOCTL_GET_STATS, &s))
-	return -errno;
-
-    stats->count = 0;
-    memset(stats, 0, sizeof(*stats));
-    if (s.count > sizeof(stats->data)/sizeof(stats->data[0]))
-	return -1;
-
-#define SET_VALUE                              \
-    stats->data[i].long_format = "%-20.20s";   \
-    stats->data[i].rate_format = "%8.8s";      \
-    stats->data[i].isvalue     = 1;            \
-    stats->data[i].verbose     = 0
-
-#define SET_COUNT                              \
-    stats->data[i].long_format = "%-20.20s";   \
-    stats->data[i].rate_format = "%5.5s";      \
-    stats->data[i].isvalue     = 0;            \
-    stats->data[i].mult_names  = "kgm";        \
-    stats->data[i].mult        = 1000;         \
-    stats->data[i].verbose     = 0
-
-#define SET_BYTE                               \
-    stats->data[i].long_format = "%-20.20s";   \
-    stats->data[i].rate_format = "%5.5s";      \
-    stats->data[i].isvalue     = 0;            \
-    stats->data[i].mult_names  = "KGM";        \
-    stats->data[i].mult        = 1024;         \
-    stats->data[i].verbose     = 0
-
-
-    stats->count = s.count;
-    for (i = 0; i < s.count; i++) {
-	stats->data[i].value = s.data[i].value;
-	switch (s.data[i].type) {
-	case _DRM_STAT_LOCK:
-	    stats->data[i].long_name = "Lock";
-	    stats->data[i].rate_name = "Lock";
-	    SET_VALUE;
-	    break;
-	case _DRM_STAT_OPENS:
-	    stats->data[i].long_name = "Opens";
-	    stats->data[i].rate_name = "O";
-	    SET_COUNT;
-	    stats->data[i].verbose   = 1;
-	    break;
-	case _DRM_STAT_CLOSES:
-	    stats->data[i].long_name = "Closes";
-	    stats->data[i].rate_name = "Lock";
-	    SET_COUNT;
-	    stats->data[i].verbose   = 1;
-	    break;
-	case _DRM_STAT_IOCTLS:
-	    stats->data[i].long_name = "Ioctls";
-	    stats->data[i].rate_name = "Ioc/s";
-	    SET_COUNT;
-	    break;
-	case _DRM_STAT_LOCKS:
-	    stats->data[i].long_name = "Locks";
-	    stats->data[i].rate_name = "Lck/s";
-	    SET_COUNT;
-	    break;
-	case _DRM_STAT_UNLOCKS:
-	    stats->data[i].long_name = "Unlocks";
-	    stats->data[i].rate_name = "Unl/s";
-	    SET_COUNT;
-	    break;
-	case _DRM_STAT_IRQ:
-	    stats->data[i].long_name = "IRQs";
-	    stats->data[i].rate_name = "IRQ/s";
-	    SET_COUNT;
-	    break;
-	case _DRM_STAT_PRIMARY:
-	    stats->data[i].long_name = "Primary Bytes";
-	    stats->data[i].rate_name = "PB/s";
-	    SET_BYTE;
-	    break;
-	case _DRM_STAT_SECONDARY:
-	    stats->data[i].long_name = "Secondary Bytes";
-	    stats->data[i].rate_name = "SB/s";
-	    SET_BYTE;
-	    break;
-	case _DRM_STAT_DMA:
-	    stats->data[i].long_name = "DMA";
-	    stats->data[i].rate_name = "DMA/s";
-	    SET_COUNT;
-	    break;
-	case _DRM_STAT_SPECIAL:
-	    stats->data[i].long_name = "Special DMA";
-	    stats->data[i].rate_name = "dma/s";
-	    SET_COUNT;
-	    break;
-	case _DRM_STAT_MISSED:
-	    stats->data[i].long_name = "Miss";
-	    stats->data[i].rate_name = "Ms/s";
-	    SET_COUNT;
-	    break;
-	case _DRM_STAT_VALUE:
-	    stats->data[i].long_name = "Value";
-	    stats->data[i].rate_name = "Value";
-	    SET_VALUE;
-	    break;
-	case _DRM_STAT_BYTE:
-	    stats->data[i].long_name = "Bytes";
-	    stats->data[i].rate_name = "B/s";
-	    SET_BYTE;
-	    break;
-	case _DRM_STAT_COUNT:
-	default:
-	    stats->data[i].long_name = "Count";
-	    stats->data[i].rate_name = "Cnt/s";
-	    SET_COUNT;
-	    break;
-	}
-    }
-    return 0;
-}
-
-/**
- * Issue a set-version ioctl.
- *
- * \param fd file descriptor.
- * \param drmCommandIndex command index 
- * \param data source pointer of the data to be read and written.
- * \param size size of the data to be read and written.
- * 
- * \return zero on success, or a negative value on failure.
- * 
- * \internal
- * It issues a read-write ioctl given by 
- * \code DRM_COMMAND_BASE + drmCommandIndex \endcode.
- */
-int drmSetInterfaceVersion(int fd, drmSetVersion *version)
-{
-    int retcode = 0;
-    drm_set_version_t sv;
-
-    sv.drm_di_major = version->drm_di_major;
-    sv.drm_di_minor = version->drm_di_minor;
-    sv.drm_dd_major = version->drm_dd_major;
-    sv.drm_dd_minor = version->drm_dd_minor;
-
-    if (drmIoctl(fd, DRM_IOCTL_SET_VERSION, &sv)) {
-	retcode = -errno;
-    }
-
-    version->drm_di_major = sv.drm_di_major;
-    version->drm_di_minor = sv.drm_di_minor;
-    version->drm_dd_major = sv.drm_dd_major;
-    version->drm_dd_minor = sv.drm_dd_minor;
-
-    return retcode;
-}
-
-/**
- * Send a device-specific command.
- *
- * \param fd file descriptor.
- * \param drmCommandIndex command index 
- * 
- * \return zero on success, or a negative value on failure.
- * 
- * \internal
- * It issues a ioctl given by 
- * \code DRM_COMMAND_BASE + drmCommandIndex \endcode.
- */
-int drmCommandNone(int fd, unsigned long drmCommandIndex)
-{
-    void *data = NULL; /* dummy */
-    unsigned long request;
-
-    request = DRM_IO( DRM_COMMAND_BASE + drmCommandIndex);
-
-    if (drmIoctl(fd, request, data)) {
-	return -errno;
-    }
-    return 0;
-}
-
-
-/**
- * Send a device-specific read command.
- *
- * \param fd file descriptor.
- * \param drmCommandIndex command index 
- * \param data destination pointer of the data to be read.
- * \param size size of the data to be read.
- * 
- * \return zero on success, or a negative value on failure.
- *
- * \internal
- * It issues a read ioctl given by 
- * \code DRM_COMMAND_BASE + drmCommandIndex \endcode.
- */
-int drmCommandRead(int fd, unsigned long drmCommandIndex, void *data,
-                   unsigned long size)
-{
-    unsigned long request;
-
-    request = DRM_IOC( DRM_IOC_READ, DRM_IOCTL_BASE, 
-	DRM_COMMAND_BASE + drmCommandIndex, size);
-
-    if (drmIoctl(fd, request, data)) {
-	return -errno;
-    }
-    return 0;
-}
-
-
-/**
- * Send a device-specific write command.
- *
- * \param fd file descriptor.
- * \param drmCommandIndex command index 
- * \param data source pointer of the data to be written.
- * \param size size of the data to be written.
- * 
- * \return zero on success, or a negative value on failure.
- * 
- * \internal
- * It issues a write ioctl given by 
- * \code DRM_COMMAND_BASE + drmCommandIndex \endcode.
- */
-int drmCommandWrite(int fd, unsigned long drmCommandIndex, void *data,
-                    unsigned long size)
-{
-    unsigned long request;
-
-    request = DRM_IOC( DRM_IOC_WRITE, DRM_IOCTL_BASE, 
-	DRM_COMMAND_BASE + drmCommandIndex, size);
-
-    if (drmIoctl(fd, request, data)) {
-	return -errno;
-    }
-    return 0;
-}
-
-
-/**
- * Send a device-specific read-write command.
- *
- * \param fd file descriptor.
- * \param drmCommandIndex command index 
- * \param data source pointer of the data to be read and written.
- * \param size size of the data to be read and written.
- * 
- * \return zero on success, or a negative value on failure.
- * 
- * \internal
- * It issues a read-write ioctl given by 
- * \code DRM_COMMAND_BASE + drmCommandIndex \endcode.
- */
-int drmCommandWriteRead(int fd, unsigned long drmCommandIndex, void *data,
-                        unsigned long size)
-{
-    unsigned long request;
-
-    request = DRM_IOC( DRM_IOC_READ|DRM_IOC_WRITE, DRM_IOCTL_BASE, 
-	DRM_COMMAND_BASE + drmCommandIndex, size);
-
-    if (drmIoctl(fd, request, data))
-	return -errno;
-    return 0;
-}
-
-#define DRM_MAX_FDS 16
-static struct {
-    char *BusID;
-    int fd;
-    int refcount;
-} connection[DRM_MAX_FDS];
-
-static int nr_fds = 0;
-
-int drmOpenOnce(void *unused, 
-		const char *BusID,
-		int *newlyopened)
-{
-    int i;
-    int fd;
-   
-    for (i = 0; i < nr_fds; i++)
-	if (strcmp(BusID, connection[i].BusID) == 0) {
-	    connection[i].refcount++;
-	    *newlyopened = 0;
-	    return connection[i].fd;
-	}
-
-    fd = drmOpen(unused, BusID);
-    if (fd <= 0 || nr_fds == DRM_MAX_FDS)
-	return fd;
-   
-    connection[nr_fds].BusID = strdup(BusID);
-    connection[nr_fds].fd = fd;
-    connection[nr_fds].refcount = 1;
-    *newlyopened = 1;
-
-    if (0)
-	fprintf(stderr, "saved connection %d for %s %d\n", 
-		nr_fds, connection[nr_fds].BusID, 
-		strcmp(BusID, connection[nr_fds].BusID));
-
-    nr_fds++;
-
-    return fd;
-}
-
-void drmCloseOnce(int fd)
-{
-    int i;
-
-    for (i = 0; i < nr_fds; i++) {
-	if (fd == connection[i].fd) {
-	    if (--connection[i].refcount == 0) {
-		drmClose(connection[i].fd);
-		free(connection[i].BusID);
-	    
-		if (i < --nr_fds) 
-		    connection[i] = connection[nr_fds];
-
-		return;
-	    }
-	}
-    }
-}
-
-int drmSetMaster(int fd)
-{
-	int ret;
-
-	fprintf(stderr,"Setting master \n");
-	ret = ioctl(fd, DRM_IOCTL_SET_MASTER, 0);
-	return ret;
-}
-
-int drmDropMaster(int fd)
-{
-	int ret;
-	fprintf(stderr,"Dropping master \n");
-	ret = ioctl(fd, DRM_IOCTL_DROP_MASTER, 0);
-	return ret;
-}