4286 lines
106 KiB
C
4286 lines
106 KiB
C
/**
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* \file xf86drm.c
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* User-level interface to DRM device
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*
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* \author Rickard E. (Rik) Faith <faith@valinux.com>
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* \author Kevin E. Martin <martin@valinux.com>
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*/
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/*
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* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
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* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include <string.h>
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#include <strings.h>
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#include <ctype.h>
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#include <dirent.h>
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#include <stddef.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <limits.h>
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#include <signal.h>
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#include <time.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#define stat_t struct stat
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <stdarg.h>
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#ifdef MAJOR_IN_MKDEV
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#include <sys/mkdev.h>
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#endif
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#ifdef MAJOR_IN_SYSMACROS
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#include <sys/sysmacros.h>
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#endif
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#include <math.h>
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#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
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/* Not all systems have MAP_FAILED defined */
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#ifndef MAP_FAILED
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#define MAP_FAILED ((void *)-1)
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#endif
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#include "xf86drm.h"
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#include "libdrm_macros.h"
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#include "util_math.h"
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#ifdef __OpenBSD__
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#define DRM_PRIMARY_MINOR_NAME "drm"
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#define DRM_CONTROL_MINOR_NAME "drmC"
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#define DRM_RENDER_MINOR_NAME "drmR"
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#else
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#define DRM_PRIMARY_MINOR_NAME "card"
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#define DRM_CONTROL_MINOR_NAME "controlD"
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#define DRM_RENDER_MINOR_NAME "renderD"
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#endif
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
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#define DRM_MAJOR 145
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#endif
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#ifdef __NetBSD__
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#define DRM_MAJOR 34
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#endif
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#ifdef __OpenBSD__
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#ifdef __i386__
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#define DRM_MAJOR 88
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#else
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#define DRM_MAJOR 87
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#endif
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#endif /* __OpenBSD__ */
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#ifndef DRM_MAJOR
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#define DRM_MAJOR 226 /* Linux */
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#endif
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#ifdef __OpenBSD__
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#define X_PRIVSEP
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#endif
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#if defined(__OpenBSD__) || defined(__DragonFly__)
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struct drm_pciinfo {
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uint16_t domain;
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uint8_t bus;
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uint8_t dev;
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uint8_t func;
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uint16_t vendor_id;
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uint16_t device_id;
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uint16_t subvendor_id;
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uint16_t subdevice_id;
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uint8_t revision_id;
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};
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#define DRM_IOCTL_GET_PCIINFO DRM_IOR(0x15, struct drm_pciinfo)
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#endif
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#define DRM_MSG_VERBOSITY 3
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#define memclear(s) memset(&s, 0, sizeof(s))
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static drmServerInfoPtr drm_server_info;
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drm_public void drmSetServerInfo(drmServerInfoPtr info)
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{
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drm_server_info = info;
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}
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/**
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* Output a message to stderr.
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*
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* \param format printf() like format string.
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*
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* \internal
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* This function is a wrapper around vfprintf().
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*/
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static int DRM_PRINTFLIKE(1, 0)
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drmDebugPrint(const char *format, va_list ap)
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{
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return vfprintf(stderr, format, ap);
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}
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drm_public void
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drmMsg(const char *format, ...)
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{
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va_list ap;
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const char *env;
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if (((env = getenv("LIBGL_DEBUG")) && strstr(env, "verbose")) ||
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(drm_server_info && drm_server_info->debug_print))
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{
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va_start(ap, format);
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if (drm_server_info) {
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drm_server_info->debug_print(format,ap);
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} else {
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drmDebugPrint(format, ap);
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}
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va_end(ap);
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}
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}
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static void *drmHashTable = NULL; /* Context switch callbacks */
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drm_public void *drmGetHashTable(void)
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{
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return drmHashTable;
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}
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drm_public void *drmMalloc(int size)
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{
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return calloc(1, size);
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}
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drm_public void drmFree(void *pt)
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{
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free(pt);
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}
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/**
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* Call ioctl, restarting if it is interrupted
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*/
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drm_public int
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drmIoctl(int fd, unsigned long request, void *arg)
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{
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int ret;
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do {
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ret = ioctl(fd, request, arg);
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} while (ret == -1 && (errno == EINTR || errno == EAGAIN));
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return ret;
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}
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static unsigned long drmGetKeyFromFd(int fd)
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{
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stat_t st;
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st.st_rdev = 0;
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fstat(fd, &st);
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return st.st_rdev;
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}
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drm_public drmHashEntry *drmGetEntry(int fd)
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{
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unsigned long key = drmGetKeyFromFd(fd);
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void *value;
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drmHashEntry *entry;
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if (!drmHashTable)
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drmHashTable = drmHashCreate();
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if (drmHashLookup(drmHashTable, key, &value)) {
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entry = drmMalloc(sizeof(*entry));
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entry->fd = fd;
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entry->f = NULL;
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entry->tagTable = drmHashCreate();
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drmHashInsert(drmHashTable, key, entry);
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} else {
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entry = value;
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}
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return entry;
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}
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/**
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* Compare two busid strings
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*
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* \param first
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* \param second
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*
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* \return 1 if matched.
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*
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* \internal
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* This function compares two bus ID strings. It understands the older
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* PCI:b:d:f format and the newer pci:oooo:bb:dd.f format. In the format, o is
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* domain, b is bus, d is device, f is function.
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*/
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static int drmMatchBusID(const char *id1, const char *id2, int pci_domain_ok)
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{
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/* First, check if the IDs are exactly the same */
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if (strcasecmp(id1, id2) == 0)
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return 1;
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/* Try to match old/new-style PCI bus IDs. */
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if (strncasecmp(id1, "pci", 3) == 0) {
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unsigned int o1, b1, d1, f1;
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unsigned int o2, b2, d2, f2;
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int ret;
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ret = sscanf(id1, "pci:%04x:%02x:%02x.%u", &o1, &b1, &d1, &f1);
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if (ret != 4) {
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o1 = 0;
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ret = sscanf(id1, "PCI:%u:%u:%u", &b1, &d1, &f1);
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if (ret != 3)
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return 0;
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}
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ret = sscanf(id2, "pci:%04x:%02x:%02x.%u", &o2, &b2, &d2, &f2);
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if (ret != 4) {
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o2 = 0;
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ret = sscanf(id2, "PCI:%u:%u:%u", &b2, &d2, &f2);
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if (ret != 3)
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return 0;
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}
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/* If domains aren't properly supported by the kernel interface,
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* just ignore them, which sucks less than picking a totally random
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* card with "open by name"
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*/
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if (!pci_domain_ok)
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o1 = o2 = 0;
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if ((o1 != o2) || (b1 != b2) || (d1 != d2) || (f1 != f2))
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return 0;
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else
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return 1;
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}
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return 0;
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}
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/**
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* Handles error checking for chown call.
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*
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* \param path to file.
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* \param id of the new owner.
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* \param id of the new group.
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*
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* \return zero if success or -1 if failure.
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*
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* \internal
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* Checks for failure. If failure was caused by signal call chown again.
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* If any other failure happened then it will output error message using
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* drmMsg() call.
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*/
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#if !UDEV
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static int chown_check_return(const char *path, uid_t owner, gid_t group)
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{
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int rv;
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do {
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rv = chown(path, owner, group);
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} while (rv != 0 && errno == EINTR);
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if (rv == 0)
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return 0;
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drmMsg("Failed to change owner or group for file %s! %d: %s\n",
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path, errno, strerror(errno));
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return -1;
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}
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#endif
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#ifdef X_PRIVSEP
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static int
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_priv_open_device(const char *path)
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{
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drmMsg("_priv_open_device\n");
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return open(path, O_RDWR, 0);
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}
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drm_public int priv_open_device(const char *)
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__attribute__((weak, alias ("_priv_open_device")));
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#endif
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/**
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* Open the DRM device, creating it if necessary.
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*
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* \param dev major and minor numbers of the device.
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* \param minor minor number of the device.
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*
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* \return a file descriptor on success, or a negative value on error.
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*
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* \internal
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* Assembles the device name from \p minor and opens it, creating the device
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* special file node with the major and minor numbers specified by \p dev and
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* parent directory if necessary and was called by root.
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*/
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static int drmOpenDevice(dev_t dev, int minor, int type)
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{
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stat_t st;
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const char *dev_name;
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char buf[64];
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int fd;
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mode_t devmode = DRM_DEV_MODE, serv_mode;
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gid_t serv_group;
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#if !UDEV
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int isroot = !geteuid();
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uid_t user = DRM_DEV_UID;
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gid_t group = DRM_DEV_GID;
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#endif
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switch (type) {
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case DRM_NODE_PRIMARY:
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dev_name = DRM_DEV_NAME;
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break;
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case DRM_NODE_CONTROL:
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dev_name = DRM_CONTROL_DEV_NAME;
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break;
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case DRM_NODE_RENDER:
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dev_name = DRM_RENDER_DEV_NAME;
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break;
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default:
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return -EINVAL;
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};
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sprintf(buf, dev_name, DRM_DIR_NAME, minor);
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drmMsg("drmOpenDevice: node name is %s\n", buf);
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if (drm_server_info && drm_server_info->get_perms) {
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drm_server_info->get_perms(&serv_group, &serv_mode);
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devmode = serv_mode ? serv_mode : DRM_DEV_MODE;
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devmode &= ~(S_IXUSR|S_IXGRP|S_IXOTH);
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}
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#ifndef __OpenBSD__
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#if !UDEV
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if (stat(DRM_DIR_NAME, &st)) {
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if (!isroot)
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return DRM_ERR_NOT_ROOT;
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mkdir(DRM_DIR_NAME, DRM_DEV_DIRMODE);
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chown_check_return(DRM_DIR_NAME, 0, 0); /* root:root */
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chmod(DRM_DIR_NAME, DRM_DEV_DIRMODE);
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}
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/* Check if the device node exists and create it if necessary. */
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if (stat(buf, &st)) {
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if (!isroot)
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return DRM_ERR_NOT_ROOT;
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remove(buf);
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mknod(buf, S_IFCHR | devmode, dev);
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}
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if (drm_server_info && drm_server_info->get_perms) {
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group = ((int)serv_group >= 0) ? serv_group : DRM_DEV_GID;
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chown_check_return(buf, user, group);
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chmod(buf, devmode);
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}
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#else
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/* if we modprobed then wait for udev */
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{
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int udev_count = 0;
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wait_for_udev:
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if (stat(DRM_DIR_NAME, &st)) {
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usleep(20);
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udev_count++;
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if (udev_count == 50)
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return -1;
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goto wait_for_udev;
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}
|
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if (stat(buf, &st)) {
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usleep(20);
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udev_count++;
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if (udev_count == 50)
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return -1;
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goto wait_for_udev;
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}
|
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}
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#endif
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#endif /* __OpenBSD__ */
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#ifndef X_PRIVSEP
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fd = open(buf, O_RDWR | O_CLOEXEC, 0);
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#else
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fd = priv_open_device(buf);
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#endif
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drmMsg("drmOpenDevice: open result is %d, (%s)\n",
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fd, fd < 0 ? strerror(errno) : "OK");
|
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if (fd >= 0)
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return fd;
|
|
|
|
#if !UDEV && !defined(__OpenBSD__)
|
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/* Check if the device node is not what we expect it to be, and recreate it
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* and try again if so.
|
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*/
|
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if (st.st_rdev != dev) {
|
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if (!isroot)
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return DRM_ERR_NOT_ROOT;
|
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remove(buf);
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mknod(buf, S_IFCHR | devmode, dev);
|
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if (drm_server_info && drm_server_info->get_perms) {
|
|
chown_check_return(buf, user, group);
|
|
chmod(buf, devmode);
|
|
}
|
|
}
|
|
fd = open(buf, O_RDWR | O_CLOEXEC, 0);
|
|
drmMsg("drmOpenDevice: open result is %d, (%s)\n",
|
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fd, fd < 0 ? strerror(errno) : "OK");
|
|
if (fd >= 0)
|
|
return fd;
|
|
|
|
drmMsg("drmOpenDevice: Open failed\n");
|
|
remove(buf);
|
|
#endif
|
|
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];
|
|
const char *dev_name;
|
|
|
|
if (create)
|
|
return drmOpenDevice(makedev(DRM_MAJOR, minor), minor, type);
|
|
|
|
switch (type) {
|
|
case DRM_NODE_PRIMARY:
|
|
dev_name = DRM_DEV_NAME;
|
|
break;
|
|
case DRM_NODE_CONTROL:
|
|
dev_name = DRM_CONTROL_DEV_NAME;
|
|
break;
|
|
case DRM_NODE_RENDER:
|
|
dev_name = DRM_RENDER_DEV_NAME;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
};
|
|
|
|
sprintf(buf, dev_name, DRM_DIR_NAME, minor);
|
|
#ifndef X_PRIVSEP
|
|
fd = open(buf, O_RDWR | O_CLOEXEC, 0);
|
|
#else
|
|
fd = priv_open_device(buf);
|
|
#endif
|
|
if (fd >= 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.
|
|
*/
|
|
drm_public int drmAvailable(void)
|
|
{
|
|
drmVersionPtr version;
|
|
int retval = 0;
|
|
int fd;
|
|
|
|
if ((fd = drmOpenMinor(0, 1, DRM_NODE_PRIMARY)) < 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;
|
|
}
|
|
|
|
static int drmGetMinorBase(int type)
|
|
{
|
|
switch (type) {
|
|
case DRM_NODE_PRIMARY:
|
|
return 0;
|
|
case DRM_NODE_CONTROL:
|
|
return 64;
|
|
case DRM_NODE_RENDER:
|
|
return 128;
|
|
default:
|
|
return -1;
|
|
};
|
|
}
|
|
|
|
static int drmGetMinorType(int minor)
|
|
{
|
|
int type = minor >> 6;
|
|
|
|
if (minor < 0)
|
|
return -1;
|
|
|
|
switch (type) {
|
|
case DRM_NODE_PRIMARY:
|
|
case DRM_NODE_CONTROL:
|
|
case DRM_NODE_RENDER:
|
|
return type;
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
static const char *drmGetMinorName(int type)
|
|
{
|
|
switch (type) {
|
|
case DRM_NODE_PRIMARY:
|
|
return DRM_PRIMARY_MINOR_NAME;
|
|
case DRM_NODE_CONTROL:
|
|
return DRM_CONTROL_MINOR_NAME;
|
|
case DRM_NODE_RENDER:
|
|
return DRM_RENDER_MINOR_NAME;
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Open the device by bus ID.
|
|
*
|
|
* \param busid bus ID.
|
|
* \param type device node type.
|
|
*
|
|
* \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 type)
|
|
{
|
|
int i, pci_domain_ok = 1;
|
|
int fd;
|
|
const char *buf;
|
|
drmSetVersion sv;
|
|
int base = drmGetMinorBase(type);
|
|
|
|
if (base < 0)
|
|
return -1;
|
|
|
|
drmMsg("drmOpenByBusid: Searching for BusID %s\n", busid);
|
|
for (i = base; i < base + DRM_MAX_MINOR; i++) {
|
|
fd = drmOpenMinor(i, 1, type);
|
|
drmMsg("drmOpenByBusid: drmOpenMinor returns %d\n", fd);
|
|
if (fd >= 0) {
|
|
/* We need to try for 1.4 first for proper PCI domain support
|
|
* and if that fails, we know the kernel is busted
|
|
*/
|
|
sv.drm_di_major = 1;
|
|
sv.drm_di_minor = 4;
|
|
sv.drm_dd_major = -1; /* Don't care */
|
|
sv.drm_dd_minor = -1; /* Don't care */
|
|
if (drmSetInterfaceVersion(fd, &sv)) {
|
|
#ifndef __alpha__
|
|
pci_domain_ok = 0;
|
|
#endif
|
|
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 */
|
|
drmMsg("drmOpenByBusid: Interface 1.4 failed, trying 1.1\n");
|
|
drmSetInterfaceVersion(fd, &sv);
|
|
}
|
|
buf = drmGetBusid(fd);
|
|
drmMsg("drmOpenByBusid: drmGetBusid reports %s\n", buf);
|
|
if (buf && drmMatchBusID(buf, busid, pci_domain_ok)) {
|
|
drmFreeBusid(buf);
|
|
return fd;
|
|
}
|
|
if (buf)
|
|
drmFreeBusid(buf);
|
|
close(fd);
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
|
|
/**
|
|
* Open the device by name.
|
|
*
|
|
* \param name driver name.
|
|
* \param type the device node type.
|
|
*
|
|
* \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 type)
|
|
{
|
|
int i;
|
|
int fd;
|
|
drmVersionPtr version;
|
|
char * id;
|
|
int base = drmGetMinorBase(type);
|
|
|
|
if (base < 0)
|
|
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 = base; i < base + DRM_MAX_MINOR; i++) {
|
|
if ((fd = drmOpenMinor(i, 1, type)) >= 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, type);
|
|
} else { /* No busid */
|
|
return drmOpenDevice(strtol(devstring, NULL, 0),i, type);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#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.
|
|
*/
|
|
drm_public int drmOpen(const char *name, const char *busid)
|
|
{
|
|
return drmOpenWithType(name, busid, DRM_NODE_PRIMARY);
|
|
}
|
|
|
|
/**
|
|
* Open the DRM device with specified type.
|
|
*
|
|
* 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.
|
|
* \param type the device node type to open, PRIMARY, CONTROL or RENDER
|
|
*
|
|
* \return a file descriptor on success, or a negative value on error.
|
|
*
|
|
* \internal
|
|
* It calls drmOpenByBusid() if \p busid is specified or drmOpenByName()
|
|
* otherwise.
|
|
*/
|
|
drm_public int drmOpenWithType(const char *name, const char *busid, int type)
|
|
{
|
|
if (!drmAvailable() && name != NULL && drm_server_info &&
|
|
drm_server_info->load_module) {
|
|
/* try to load the kernel module */
|
|
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, type);
|
|
if (fd >= 0)
|
|
return fd;
|
|
}
|
|
|
|
if (name)
|
|
return drmOpenByName(name, type);
|
|
|
|
return -1;
|
|
}
|
|
|
|
drm_public int drmOpenControl(int minor)
|
|
{
|
|
return drmOpenMinor(minor, 0, DRM_NODE_CONTROL);
|
|
}
|
|
|
|
drm_public int drmOpenRender(int minor)
|
|
{
|
|
return drmOpenMinor(minor, 0, DRM_NODE_RENDER);
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
drm_public 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 = strdup(s->name);
|
|
d->date_len = s->date_len;
|
|
d->date = strdup(s->date);
|
|
d->desc_len = s->desc_len;
|
|
d->desc = strdup(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.
|
|
*/
|
|
drm_public drmVersionPtr drmGetVersion(int fd)
|
|
{
|
|
drmVersionPtr retval;
|
|
drm_version_t *version = drmMalloc(sizeof(*version));
|
|
|
|
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.
|
|
*/
|
|
drm_public 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;
|
|
}
|
|
|
|
drm_public int drmGetCap(int fd, uint64_t capability, uint64_t *value)
|
|
{
|
|
struct drm_get_cap cap;
|
|
int ret;
|
|
|
|
memclear(cap);
|
|
cap.capability = capability;
|
|
|
|
ret = drmIoctl(fd, DRM_IOCTL_GET_CAP, &cap);
|
|
if (ret)
|
|
return ret;
|
|
|
|
*value = cap.value;
|
|
return 0;
|
|
}
|
|
|
|
drm_public int drmSetClientCap(int fd, uint64_t capability, uint64_t value)
|
|
{
|
|
struct drm_set_client_cap cap;
|
|
|
|
memclear(cap);
|
|
cap.capability = capability;
|
|
cap.value = value;
|
|
|
|
return drmIoctl(fd, DRM_IOCTL_SET_CLIENT_CAP, &cap);
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
drm_public 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.
|
|
*/
|
|
drm_public char *drmGetBusid(int fd)
|
|
{
|
|
drm_unique_t u;
|
|
|
|
memclear(u);
|
|
|
|
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)) {
|
|
drmFree(u.unique);
|
|
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.
|
|
*/
|
|
drm_public int drmSetBusid(int fd, const char *busid)
|
|
{
|
|
drm_unique_t u;
|
|
|
|
memclear(u);
|
|
u.unique = (char *)busid;
|
|
u.unique_len = strlen(busid);
|
|
|
|
if (drmIoctl(fd, DRM_IOCTL_SET_UNIQUE, &u)) {
|
|
return -errno;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
drm_public int drmGetMagic(int fd, drm_magic_t * magic)
|
|
{
|
|
drm_auth_t auth;
|
|
|
|
memclear(auth);
|
|
|
|
*magic = 0;
|
|
if (drmIoctl(fd, DRM_IOCTL_GET_MAGIC, &auth))
|
|
return -errno;
|
|
*magic = auth.magic;
|
|
return 0;
|
|
}
|
|
|
|
drm_public int drmAuthMagic(int fd, drm_magic_t magic)
|
|
{
|
|
drm_auth_t auth;
|
|
|
|
memclear(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.
|
|
*/
|
|
drm_public int drmAddMap(int fd, drm_handle_t offset, drmSize size, drmMapType type,
|
|
drmMapFlags flags, drm_handle_t *handle)
|
|
{
|
|
drm_map_t map;
|
|
|
|
memclear(map);
|
|
map.offset = offset;
|
|
map.size = size;
|
|
map.type = type;
|
|
map.flags = flags;
|
|
if (drmIoctl(fd, DRM_IOCTL_ADD_MAP, &map))
|
|
return -errno;
|
|
if (handle)
|
|
*handle = (drm_handle_t)(uintptr_t)map.handle;
|
|
return 0;
|
|
}
|
|
|
|
drm_public int drmRmMap(int fd, drm_handle_t handle)
|
|
{
|
|
drm_map_t map;
|
|
|
|
memclear(map);
|
|
map.handle = (void *)(uintptr_t)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.
|
|
*/
|
|
drm_public int drmAddBufs(int fd, int count, int size, drmBufDescFlags flags,
|
|
int agp_offset)
|
|
{
|
|
drm_buf_desc_t request;
|
|
|
|
memclear(request);
|
|
request.count = count;
|
|
request.size = size;
|
|
request.flags = flags;
|
|
request.agp_start = agp_offset;
|
|
|
|
if (drmIoctl(fd, DRM_IOCTL_ADD_BUFS, &request))
|
|
return -errno;
|
|
return request.count;
|
|
}
|
|
|
|
drm_public int drmMarkBufs(int fd, double low, double high)
|
|
{
|
|
drm_buf_info_t info;
|
|
int i;
|
|
|
|
memclear(info);
|
|
|
|
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.
|
|
*/
|
|
drm_public int drmFreeBufs(int fd, int count, int *list)
|
|
{
|
|
drm_buf_free_t request;
|
|
|
|
memclear(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.
|
|
*/
|
|
drm_public 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().
|
|
*/
|
|
drm_public 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 = drm_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().
|
|
*/
|
|
drm_public int drmUnmap(drmAddress address, drmSize size)
|
|
{
|
|
return drm_munmap(address, size);
|
|
}
|
|
|
|
drm_public drmBufInfoPtr drmGetBufInfo(int fd)
|
|
{
|
|
drm_buf_info_t info;
|
|
drmBufInfoPtr retval;
|
|
int i;
|
|
|
|
memclear(info);
|
|
|
|
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.
|
|
*/
|
|
drm_public drmBufMapPtr drmMapBufs(int fd)
|
|
{
|
|
drm_buf_map_t bufs;
|
|
drmBufMapPtr retval;
|
|
int i;
|
|
|
|
memclear(bufs);
|
|
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().
|
|
*/
|
|
drm_public int drmUnmapBufs(drmBufMapPtr bufs)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < bufs->count; i++) {
|
|
drm_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.
|
|
*/
|
|
drm_public 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 state 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.
|
|
*/
|
|
drm_public int drmGetLock(int fd, drm_context_t context, drmLockFlags flags)
|
|
{
|
|
drm_lock_t lock;
|
|
|
|
memclear(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.
|
|
*/
|
|
drm_public int drmUnlock(int fd, drm_context_t context)
|
|
{
|
|
drm_lock_t lock;
|
|
|
|
memclear(lock);
|
|
lock.context = context;
|
|
return drmIoctl(fd, DRM_IOCTL_UNLOCK, &lock);
|
|
}
|
|
|
|
drm_public drm_context_t *drmGetReservedContextList(int fd, int *count)
|
|
{
|
|
drm_ctx_res_t res;
|
|
drm_ctx_t *list;
|
|
drm_context_t * retval;
|
|
int i;
|
|
|
|
memclear(res);
|
|
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))))
|
|
goto err_free_list;
|
|
|
|
res.contexts = list;
|
|
if (drmIoctl(fd, DRM_IOCTL_RES_CTX, &res))
|
|
goto err_free_context;
|
|
|
|
for (i = 0; i < res.count; i++)
|
|
retval[i] = list[i].handle;
|
|
drmFree(list);
|
|
|
|
*count = res.count;
|
|
return retval;
|
|
|
|
err_free_list:
|
|
drmFree(list);
|
|
err_free_context:
|
|
drmFree(retval);
|
|
return NULL;
|
|
}
|
|
|
|
drm_public 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.
|
|
*/
|
|
drm_public int drmCreateContext(int fd, drm_context_t *handle)
|
|
{
|
|
drm_ctx_t ctx;
|
|
|
|
memclear(ctx);
|
|
if (drmIoctl(fd, DRM_IOCTL_ADD_CTX, &ctx))
|
|
return -errno;
|
|
*handle = ctx.handle;
|
|
return 0;
|
|
}
|
|
|
|
drm_public int drmSwitchToContext(int fd, drm_context_t context)
|
|
{
|
|
drm_ctx_t ctx;
|
|
|
|
memclear(ctx);
|
|
ctx.handle = context;
|
|
if (drmIoctl(fd, DRM_IOCTL_SWITCH_CTX, &ctx))
|
|
return -errno;
|
|
return 0;
|
|
}
|
|
|
|
drm_public 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.
|
|
*/
|
|
memclear(ctx);
|
|
ctx.handle = context;
|
|
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;
|
|
}
|
|
|
|
drm_public int drmGetContextFlags(int fd, drm_context_t context,
|
|
drm_context_tFlagsPtr flags)
|
|
{
|
|
drm_ctx_t ctx;
|
|
|
|
memclear(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.
|
|
*/
|
|
drm_public int drmDestroyContext(int fd, drm_context_t handle)
|
|
{
|
|
drm_ctx_t ctx;
|
|
|
|
memclear(ctx);
|
|
ctx.handle = handle;
|
|
if (drmIoctl(fd, DRM_IOCTL_RM_CTX, &ctx))
|
|
return -errno;
|
|
return 0;
|
|
}
|
|
|
|
drm_public int drmCreateDrawable(int fd, drm_drawable_t *handle)
|
|
{
|
|
drm_draw_t draw;
|
|
|
|
memclear(draw);
|
|
if (drmIoctl(fd, DRM_IOCTL_ADD_DRAW, &draw))
|
|
return -errno;
|
|
*handle = draw.handle;
|
|
return 0;
|
|
}
|
|
|
|
drm_public int drmDestroyDrawable(int fd, drm_drawable_t handle)
|
|
{
|
|
drm_draw_t draw;
|
|
|
|
memclear(draw);
|
|
draw.handle = handle;
|
|
if (drmIoctl(fd, DRM_IOCTL_RM_DRAW, &draw))
|
|
return -errno;
|
|
return 0;
|
|
}
|
|
|
|
drm_public int drmUpdateDrawableInfo(int fd, drm_drawable_t handle,
|
|
drm_drawable_info_type_t type,
|
|
unsigned int num, void *data)
|
|
{
|
|
drm_update_draw_t update;
|
|
|
|
memclear(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;
|
|
}
|
|
|
|
drm_public int drmCrtcGetSequence(int fd, uint32_t crtcId, uint64_t *sequence,
|
|
uint64_t *ns)
|
|
{
|
|
struct drm_crtc_get_sequence get_seq;
|
|
int ret;
|
|
|
|
memclear(get_seq);
|
|
get_seq.crtc_id = crtcId;
|
|
ret = drmIoctl(fd, DRM_IOCTL_CRTC_GET_SEQUENCE, &get_seq);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (sequence)
|
|
*sequence = get_seq.sequence;
|
|
if (ns)
|
|
*ns = get_seq.sequence_ns;
|
|
return 0;
|
|
}
|
|
|
|
drm_public int drmCrtcQueueSequence(int fd, uint32_t crtcId, uint32_t flags,
|
|
uint64_t sequence,
|
|
uint64_t *sequence_queued,
|
|
uint64_t user_data)
|
|
{
|
|
struct drm_crtc_queue_sequence queue_seq;
|
|
int ret;
|
|
|
|
memclear(queue_seq);
|
|
queue_seq.crtc_id = crtcId;
|
|
queue_seq.flags = flags;
|
|
queue_seq.sequence = sequence;
|
|
queue_seq.user_data = user_data;
|
|
|
|
ret = drmIoctl(fd, DRM_IOCTL_CRTC_QUEUE_SEQUENCE, &queue_seq);
|
|
if (ret == 0 && sequence_queued)
|
|
*sequence_queued = queue_seq.sequence;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
drm_public 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.
|
|
*/
|
|
drm_public 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.
|
|
*/
|
|
drm_public int drmAgpEnable(int fd, unsigned long mode)
|
|
{
|
|
drm_agp_mode_t m;
|
|
|
|
memclear(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.
|
|
*/
|
|
drm_public int drmAgpAlloc(int fd, unsigned long size, unsigned long type,
|
|
unsigned long *address, drm_handle_t *handle)
|
|
{
|
|
drm_agp_buffer_t b;
|
|
|
|
memclear(b);
|
|
*handle = DRM_AGP_NO_HANDLE;
|
|
b.size = size;
|
|
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.
|
|
*/
|
|
drm_public int drmAgpFree(int fd, drm_handle_t handle)
|
|
{
|
|
drm_agp_buffer_t b;
|
|
|
|
memclear(b);
|
|
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.
|
|
*/
|
|
drm_public int drmAgpBind(int fd, drm_handle_t handle, unsigned long offset)
|
|
{
|
|
drm_agp_binding_t b;
|
|
|
|
memclear(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.
|
|
*/
|
|
drm_public int drmAgpUnbind(int fd, drm_handle_t handle)
|
|
{
|
|
drm_agp_binding_t b;
|
|
|
|
memclear(b);
|
|
b.handle = handle;
|
|
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.
|
|
*/
|
|
drm_public int drmAgpVersionMajor(int fd)
|
|
{
|
|
drm_agp_info_t i;
|
|
|
|
memclear(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.
|
|
*/
|
|
drm_public int drmAgpVersionMinor(int fd)
|
|
{
|
|
drm_agp_info_t i;
|
|
|
|
memclear(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.
|
|
*/
|
|
drm_public unsigned long drmAgpGetMode(int fd)
|
|
{
|
|
drm_agp_info_t i;
|
|
|
|
memclear(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.
|
|
*/
|
|
drm_public unsigned long drmAgpBase(int fd)
|
|
{
|
|
drm_agp_info_t i;
|
|
|
|
memclear(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.
|
|
*/
|
|
drm_public unsigned long drmAgpSize(int fd)
|
|
{
|
|
drm_agp_info_t i;
|
|
|
|
memclear(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.
|
|
*/
|
|
drm_public unsigned long drmAgpMemoryUsed(int fd)
|
|
{
|
|
drm_agp_info_t i;
|
|
|
|
memclear(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.
|
|
*/
|
|
drm_public unsigned long drmAgpMemoryAvail(int fd)
|
|
{
|
|
drm_agp_info_t i;
|
|
|
|
memclear(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.
|
|
*/
|
|
drm_public unsigned int drmAgpVendorId(int fd)
|
|
{
|
|
drm_agp_info_t i;
|
|
|
|
memclear(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.
|
|
*/
|
|
drm_public unsigned int drmAgpDeviceId(int fd)
|
|
{
|
|
drm_agp_info_t i;
|
|
|
|
memclear(i);
|
|
|
|
if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
|
|
return 0;
|
|
return i.id_device;
|
|
}
|
|
|
|
drm_public int drmScatterGatherAlloc(int fd, unsigned long size,
|
|
drm_handle_t *handle)
|
|
{
|
|
drm_scatter_gather_t sg;
|
|
|
|
memclear(sg);
|
|
|
|
*handle = 0;
|
|
sg.size = size;
|
|
if (drmIoctl(fd, DRM_IOCTL_SG_ALLOC, &sg))
|
|
return -errno;
|
|
*handle = sg.handle;
|
|
return 0;
|
|
}
|
|
|
|
drm_public int drmScatterGatherFree(int fd, drm_handle_t handle)
|
|
{
|
|
drm_scatter_gather_t sg;
|
|
|
|
memclear(sg);
|
|
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.
|
|
*/
|
|
drm_public 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(errno));
|
|
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;
|
|
}
|
|
|
|
drm_public 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.
|
|
*/
|
|
drm_public int drmCtlInstHandler(int fd, int irq)
|
|
{
|
|
drm_control_t ctl;
|
|
|
|
memclear(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.
|
|
*/
|
|
drm_public int drmCtlUninstHandler(int fd)
|
|
{
|
|
drm_control_t ctl;
|
|
|
|
memclear(ctl);
|
|
ctl.func = DRM_UNINST_HANDLER;
|
|
ctl.irq = 0;
|
|
if (drmIoctl(fd, DRM_IOCTL_CONTROL, &ctl))
|
|
return -errno;
|
|
return 0;
|
|
}
|
|
|
|
drm_public int drmFinish(int fd, int context, drmLockFlags flags)
|
|
{
|
|
drm_lock_t lock;
|
|
|
|
memclear(lock);
|
|
lock.context = context;
|
|
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.
|
|
*/
|
|
drm_public int drmGetInterruptFromBusID(int fd, int busnum, int devnum,
|
|
int funcnum)
|
|
{
|
|
drm_irq_busid_t p;
|
|
|
|
memclear(p);
|
|
p.busnum = busnum;
|
|
p.devnum = devnum;
|
|
p.funcnum = funcnum;
|
|
if (drmIoctl(fd, DRM_IOCTL_IRQ_BUSID, &p))
|
|
return -errno;
|
|
return p.irq;
|
|
}
|
|
|
|
drm_public 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;
|
|
}
|
|
|
|
drm_public int drmDelContextTag(int fd, drm_context_t context)
|
|
{
|
|
drmHashEntry *entry = drmGetEntry(fd);
|
|
|
|
return drmHashDelete(entry->tagTable, context);
|
|
}
|
|
|
|
drm_public void *drmGetContextTag(int fd, drm_context_t context)
|
|
{
|
|
drmHashEntry *entry = drmGetEntry(fd);
|
|
void *value;
|
|
|
|
if (drmHashLookup(entry->tagTable, context, &value))
|
|
return NULL;
|
|
|
|
return value;
|
|
}
|
|
|
|
drm_public int drmAddContextPrivateMapping(int fd, drm_context_t ctx_id,
|
|
drm_handle_t handle)
|
|
{
|
|
drm_ctx_priv_map_t map;
|
|
|
|
memclear(map);
|
|
map.ctx_id = ctx_id;
|
|
map.handle = (void *)(uintptr_t)handle;
|
|
|
|
if (drmIoctl(fd, DRM_IOCTL_SET_SAREA_CTX, &map))
|
|
return -errno;
|
|
return 0;
|
|
}
|
|
|
|
drm_public int drmGetContextPrivateMapping(int fd, drm_context_t ctx_id,
|
|
drm_handle_t *handle)
|
|
{
|
|
drm_ctx_priv_map_t map;
|
|
|
|
memclear(map);
|
|
map.ctx_id = ctx_id;
|
|
|
|
if (drmIoctl(fd, DRM_IOCTL_GET_SAREA_CTX, &map))
|
|
return -errno;
|
|
if (handle)
|
|
*handle = (drm_handle_t)(uintptr_t)map.handle;
|
|
|
|
return 0;
|
|
}
|
|
|
|
drm_public 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;
|
|
|
|
memclear(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;
|
|
}
|
|
|
|
drm_public int drmGetClient(int fd, int idx, int *auth, int *pid, int *uid,
|
|
unsigned long *magic, unsigned long *iocs)
|
|
{
|
|
drm_client_t client;
|
|
|
|
memclear(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;
|
|
}
|
|
|
|
drm_public int drmGetStats(int fd, drmStatsT *stats)
|
|
{
|
|
drm_stats_t s;
|
|
unsigned i;
|
|
|
|
memclear(s);
|
|
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.
|
|
*/
|
|
drm_public int drmSetInterfaceVersion(int fd, drmSetVersion *version)
|
|
{
|
|
int retcode = 0;
|
|
drm_set_version_t sv;
|
|
|
|
memclear(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.
|
|
*/
|
|
drm_public int drmCommandNone(int fd, unsigned long drmCommandIndex)
|
|
{
|
|
unsigned long request;
|
|
|
|
request = DRM_IO( DRM_COMMAND_BASE + drmCommandIndex);
|
|
|
|
if (drmIoctl(fd, request, NULL)) {
|
|
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.
|
|
*/
|
|
drm_public 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.
|
|
*/
|
|
drm_public 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.
|
|
*/
|
|
drm_public 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;
|
|
int type;
|
|
} connection[DRM_MAX_FDS];
|
|
|
|
static int nr_fds = 0;
|
|
|
|
drm_public int drmOpenOnce(void *unused, const char *BusID, int *newlyopened)
|
|
{
|
|
return drmOpenOnceWithType(BusID, newlyopened, DRM_NODE_PRIMARY);
|
|
}
|
|
|
|
drm_public int drmOpenOnceWithType(const char *BusID, int *newlyopened,
|
|
int type)
|
|
{
|
|
int i;
|
|
int fd;
|
|
|
|
for (i = 0; i < nr_fds; i++)
|
|
if ((strcmp(BusID, connection[i].BusID) == 0) &&
|
|
(connection[i].type == type)) {
|
|
connection[i].refcount++;
|
|
*newlyopened = 0;
|
|
return connection[i].fd;
|
|
}
|
|
|
|
fd = drmOpenWithType(NULL, BusID, type);
|
|
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;
|
|
connection[nr_fds].type = type;
|
|
*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;
|
|
}
|
|
|
|
drm_public 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;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
drm_public int drmSetMaster(int fd)
|
|
{
|
|
return drmIoctl(fd, DRM_IOCTL_SET_MASTER, NULL);
|
|
}
|
|
|
|
drm_public int drmDropMaster(int fd)
|
|
{
|
|
return drmIoctl(fd, DRM_IOCTL_DROP_MASTER, NULL);
|
|
}
|
|
|
|
drm_public int drmIsMaster(int fd)
|
|
{
|
|
/* Detect master by attempting something that requires master.
|
|
*
|
|
* Authenticating magic tokens requires master and 0 is an
|
|
* internal kernel detail which we could use. Attempting this on
|
|
* a master fd would fail therefore fail with EINVAL because 0
|
|
* is invalid.
|
|
*
|
|
* A non-master fd will fail with EACCES, as the kernel checks
|
|
* for master before attempting to do anything else.
|
|
*
|
|
* Since we don't want to leak implementation details, use
|
|
* EACCES.
|
|
*/
|
|
return drmAuthMagic(fd, 0) != -EACCES;
|
|
}
|
|
|
|
drm_public char *drmGetDeviceNameFromFd(int fd)
|
|
{
|
|
char name[128];
|
|
struct stat sbuf;
|
|
dev_t d;
|
|
int i;
|
|
|
|
/* The whole drmOpen thing is a fiasco and we need to find a way
|
|
* back to just using open(2). For now, however, lets just make
|
|
* things worse with even more ad hoc directory walking code to
|
|
* discover the device file name. */
|
|
|
|
fstat(fd, &sbuf);
|
|
d = sbuf.st_rdev;
|
|
|
|
for (i = 0; i < DRM_MAX_MINOR; i++) {
|
|
snprintf(name, sizeof name, DRM_DEV_NAME, DRM_DIR_NAME, i);
|
|
if (stat(name, &sbuf) == 0 && sbuf.st_rdev == d)
|
|
break;
|
|
}
|
|
if (i == DRM_MAX_MINOR)
|
|
return NULL;
|
|
|
|
return strdup(name);
|
|
}
|
|
|
|
static bool drmNodeIsDRM(int maj, int min)
|
|
{
|
|
#ifdef __linux__
|
|
char path[64];
|
|
struct stat sbuf;
|
|
|
|
snprintf(path, sizeof(path), "/sys/dev/char/%d:%d/device/drm",
|
|
maj, min);
|
|
return stat(path, &sbuf) == 0;
|
|
#else
|
|
return maj == DRM_MAJOR;
|
|
#endif
|
|
}
|
|
|
|
drm_public int drmGetNodeTypeFromFd(int fd)
|
|
{
|
|
struct stat sbuf;
|
|
int maj, min, type;
|
|
|
|
if (fstat(fd, &sbuf))
|
|
return -1;
|
|
|
|
maj = major(sbuf.st_rdev);
|
|
min = minor(sbuf.st_rdev);
|
|
|
|
if (!drmNodeIsDRM(maj, min) || !S_ISCHR(sbuf.st_mode)) {
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
type = drmGetMinorType(min);
|
|
if (type == -1)
|
|
errno = ENODEV;
|
|
return type;
|
|
}
|
|
|
|
drm_public int drmPrimeHandleToFD(int fd, uint32_t handle, uint32_t flags,
|
|
int *prime_fd)
|
|
{
|
|
struct drm_prime_handle args;
|
|
int ret;
|
|
|
|
memclear(args);
|
|
args.fd = -1;
|
|
args.handle = handle;
|
|
args.flags = flags;
|
|
ret = drmIoctl(fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &args);
|
|
if (ret)
|
|
return ret;
|
|
|
|
*prime_fd = args.fd;
|
|
return 0;
|
|
}
|
|
|
|
drm_public int drmPrimeFDToHandle(int fd, int prime_fd, uint32_t *handle)
|
|
{
|
|
struct drm_prime_handle args;
|
|
int ret;
|
|
|
|
memclear(args);
|
|
args.fd = prime_fd;
|
|
ret = drmIoctl(fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &args);
|
|
if (ret)
|
|
return ret;
|
|
|
|
*handle = args.handle;
|
|
return 0;
|
|
}
|
|
|
|
static char *drmGetMinorNameForFD(int fd, int type)
|
|
{
|
|
#ifdef __linux__
|
|
DIR *sysdir;
|
|
struct dirent *ent;
|
|
struct stat sbuf;
|
|
const char *name = drmGetMinorName(type);
|
|
int len;
|
|
char dev_name[64], buf[64];
|
|
int maj, min;
|
|
|
|
if (!name)
|
|
return NULL;
|
|
|
|
len = strlen(name);
|
|
|
|
if (fstat(fd, &sbuf))
|
|
return NULL;
|
|
|
|
maj = major(sbuf.st_rdev);
|
|
min = minor(sbuf.st_rdev);
|
|
|
|
if (!drmNodeIsDRM(maj, min) || !S_ISCHR(sbuf.st_mode))
|
|
return NULL;
|
|
|
|
snprintf(buf, sizeof(buf), "/sys/dev/char/%d:%d/device/drm", maj, min);
|
|
|
|
sysdir = opendir(buf);
|
|
if (!sysdir)
|
|
return NULL;
|
|
|
|
while ((ent = readdir(sysdir))) {
|
|
if (strncmp(ent->d_name, name, len) == 0) {
|
|
snprintf(dev_name, sizeof(dev_name), DRM_DIR_NAME "/%s",
|
|
ent->d_name);
|
|
|
|
closedir(sysdir);
|
|
return strdup(dev_name);
|
|
}
|
|
}
|
|
|
|
closedir(sysdir);
|
|
return NULL;
|
|
#else
|
|
struct stat sbuf;
|
|
char buf[PATH_MAX + 1];
|
|
const char *dev_name;
|
|
unsigned int maj, min;
|
|
int n, base;
|
|
|
|
if (fstat(fd, &sbuf))
|
|
return NULL;
|
|
|
|
maj = major(sbuf.st_rdev);
|
|
min = minor(sbuf.st_rdev);
|
|
|
|
if (!drmNodeIsDRM(maj, min) || !S_ISCHR(sbuf.st_mode))
|
|
return NULL;
|
|
|
|
switch (type) {
|
|
case DRM_NODE_PRIMARY:
|
|
dev_name = DRM_DEV_NAME;
|
|
break;
|
|
case DRM_NODE_CONTROL:
|
|
dev_name = DRM_CONTROL_DEV_NAME;
|
|
break;
|
|
case DRM_NODE_RENDER:
|
|
dev_name = DRM_RENDER_DEV_NAME;
|
|
break;
|
|
default:
|
|
return NULL;
|
|
};
|
|
|
|
base = drmGetMinorBase(type);
|
|
if (base < 0)
|
|
return NULL;
|
|
|
|
n = snprintf(buf, sizeof(buf), dev_name, DRM_DIR_NAME, min - base);
|
|
if (n == -1 || n >= sizeof(buf))
|
|
return NULL;
|
|
|
|
return strdup(buf);
|
|
#endif
|
|
}
|
|
|
|
drm_public char *drmGetPrimaryDeviceNameFromFd(int fd)
|
|
{
|
|
return drmGetMinorNameForFD(fd, DRM_NODE_PRIMARY);
|
|
}
|
|
|
|
drm_public char *drmGetRenderDeviceNameFromFd(int fd)
|
|
{
|
|
return drmGetMinorNameForFD(fd, DRM_NODE_RENDER);
|
|
}
|
|
|
|
#ifdef __linux__
|
|
static char * DRM_PRINTFLIKE(2, 3)
|
|
sysfs_uevent_get(const char *path, const char *fmt, ...)
|
|
{
|
|
char filename[PATH_MAX + 1], *key, *line = NULL, *value = NULL;
|
|
size_t size = 0, len;
|
|
ssize_t num;
|
|
va_list ap;
|
|
FILE *fp;
|
|
|
|
va_start(ap, fmt);
|
|
num = vasprintf(&key, fmt, ap);
|
|
va_end(ap);
|
|
len = num;
|
|
|
|
snprintf(filename, sizeof(filename), "%s/uevent", path);
|
|
|
|
fp = fopen(filename, "r");
|
|
if (!fp) {
|
|
free(key);
|
|
return NULL;
|
|
}
|
|
|
|
while ((num = getline(&line, &size, fp)) >= 0) {
|
|
if ((strncmp(line, key, len) == 0) && (line[len] == '=')) {
|
|
char *start = line + len + 1, *end = line + num - 1;
|
|
|
|
if (*end != '\n')
|
|
end++;
|
|
|
|
value = strndup(start, end - start);
|
|
break;
|
|
}
|
|
}
|
|
|
|
free(line);
|
|
fclose(fp);
|
|
|
|
free(key);
|
|
|
|
return value;
|
|
}
|
|
#endif
|
|
|
|
/* Little white lie to avoid major rework of the existing code */
|
|
#define DRM_BUS_VIRTIO 0x10
|
|
|
|
static int drmParseSubsystemType(int maj, int min)
|
|
{
|
|
#ifdef __linux__
|
|
char path[PATH_MAX + 1];
|
|
char link[PATH_MAX + 1] = "";
|
|
char *name;
|
|
struct {
|
|
const char *name;
|
|
int bus_type;
|
|
} bus_types[] = {
|
|
{ "/pci", DRM_BUS_PCI },
|
|
{ "/usb", DRM_BUS_USB },
|
|
{ "/platform", DRM_BUS_PLATFORM },
|
|
{ "/spi", DRM_BUS_PLATFORM },
|
|
{ "/host1x", DRM_BUS_HOST1X },
|
|
{ "/virtio", DRM_BUS_VIRTIO },
|
|
};
|
|
|
|
snprintf(path, PATH_MAX, "/sys/dev/char/%d:%d/device/subsystem",
|
|
maj, min);
|
|
|
|
if (readlink(path, link, PATH_MAX) < 0)
|
|
return -errno;
|
|
|
|
name = strrchr(link, '/');
|
|
if (!name)
|
|
return -EINVAL;
|
|
|
|
for (unsigned i = 0; i < ARRAY_SIZE(bus_types); i++) {
|
|
if (strncmp(name, bus_types[i].name, strlen(bus_types[i].name)) == 0)
|
|
return bus_types[i].bus_type;
|
|
}
|
|
|
|
return -EINVAL;
|
|
#elif defined(__OpenBSD__) || defined(__DragonFly__)
|
|
return DRM_BUS_PCI;
|
|
#else
|
|
#warning "Missing implementation of drmParseSubsystemType"
|
|
return -EINVAL;
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
get_pci_path(int maj, int min, char *pci_path)
|
|
{
|
|
char path[PATH_MAX + 1], *term;
|
|
|
|
snprintf(path, sizeof(path), "/sys/dev/char/%d:%d/device", maj, min);
|
|
if (!realpath(path, pci_path)) {
|
|
strcpy(pci_path, path);
|
|
return;
|
|
}
|
|
|
|
term = strrchr(pci_path, '/');
|
|
if (term && strncmp(term, "/virtio", 7) == 0)
|
|
*term = 0;
|
|
}
|
|
|
|
static int drmParsePciBusInfo(int maj, int min, drmPciBusInfoPtr info)
|
|
{
|
|
#ifdef __linux__
|
|
unsigned int domain, bus, dev, func;
|
|
char pci_path[PATH_MAX + 1], *value;
|
|
int num;
|
|
|
|
get_pci_path(maj, min, pci_path);
|
|
|
|
value = sysfs_uevent_get(pci_path, "PCI_SLOT_NAME");
|
|
if (!value)
|
|
return -ENOENT;
|
|
|
|
num = sscanf(value, "%04x:%02x:%02x.%1u", &domain, &bus, &dev, &func);
|
|
free(value);
|
|
|
|
if (num != 4)
|
|
return -EINVAL;
|
|
|
|
info->domain = domain;
|
|
info->bus = bus;
|
|
info->dev = dev;
|
|
info->func = func;
|
|
|
|
return 0;
|
|
#elif defined(__OpenBSD__) || defined(__DragonFly__)
|
|
struct drm_pciinfo pinfo;
|
|
int fd, type;
|
|
|
|
type = drmGetMinorType(min);
|
|
if (type == -1)
|
|
return -ENODEV;
|
|
|
|
fd = drmOpenMinor(min, 0, type);
|
|
if (fd < 0)
|
|
return -errno;
|
|
|
|
if (drmIoctl(fd, DRM_IOCTL_GET_PCIINFO, &pinfo)) {
|
|
close(fd);
|
|
return -errno;
|
|
}
|
|
close(fd);
|
|
|
|
info->domain = pinfo.domain;
|
|
info->bus = pinfo.bus;
|
|
info->dev = pinfo.dev;
|
|
info->func = pinfo.func;
|
|
|
|
return 0;
|
|
#else
|
|
#warning "Missing implementation of drmParsePciBusInfo"
|
|
return -EINVAL;
|
|
#endif
|
|
}
|
|
|
|
drm_public int drmDevicesEqual(drmDevicePtr a, drmDevicePtr b)
|
|
{
|
|
if (a == NULL || b == NULL)
|
|
return 0;
|
|
|
|
if (a->bustype != b->bustype)
|
|
return 0;
|
|
|
|
switch (a->bustype) {
|
|
case DRM_BUS_PCI:
|
|
return memcmp(a->businfo.pci, b->businfo.pci, sizeof(drmPciBusInfo)) == 0;
|
|
|
|
case DRM_BUS_USB:
|
|
return memcmp(a->businfo.usb, b->businfo.usb, sizeof(drmUsbBusInfo)) == 0;
|
|
|
|
case DRM_BUS_PLATFORM:
|
|
return memcmp(a->businfo.platform, b->businfo.platform, sizeof(drmPlatformBusInfo)) == 0;
|
|
|
|
case DRM_BUS_HOST1X:
|
|
return memcmp(a->businfo.host1x, b->businfo.host1x, sizeof(drmHost1xBusInfo)) == 0;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int drmGetNodeType(const char *name)
|
|
{
|
|
if (strncmp(name, DRM_CONTROL_MINOR_NAME,
|
|
sizeof(DRM_CONTROL_MINOR_NAME ) - 1) == 0)
|
|
return DRM_NODE_CONTROL;
|
|
|
|
if (strncmp(name, DRM_RENDER_MINOR_NAME,
|
|
sizeof(DRM_RENDER_MINOR_NAME) - 1) == 0)
|
|
return DRM_NODE_RENDER;
|
|
|
|
if (strncmp(name, DRM_PRIMARY_MINOR_NAME,
|
|
sizeof(DRM_PRIMARY_MINOR_NAME) - 1) == 0)
|
|
return DRM_NODE_PRIMARY;
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int drmGetMaxNodeName(void)
|
|
{
|
|
return sizeof(DRM_DIR_NAME) +
|
|
MAX3(sizeof(DRM_PRIMARY_MINOR_NAME),
|
|
sizeof(DRM_CONTROL_MINOR_NAME),
|
|
sizeof(DRM_RENDER_MINOR_NAME)) +
|
|
3 /* length of the node number */;
|
|
}
|
|
|
|
#ifdef __linux__
|
|
static int parse_separate_sysfs_files(int maj, int min,
|
|
drmPciDeviceInfoPtr device,
|
|
bool ignore_revision)
|
|
{
|
|
static const char *attrs[] = {
|
|
"revision", /* Older kernels are missing the file, so check for it first */
|
|
"vendor",
|
|
"device",
|
|
"subsystem_vendor",
|
|
"subsystem_device",
|
|
};
|
|
char path[PATH_MAX + 1], pci_path[PATH_MAX + 1];
|
|
unsigned int data[ARRAY_SIZE(attrs)];
|
|
FILE *fp;
|
|
int ret;
|
|
|
|
get_pci_path(maj, min, pci_path);
|
|
|
|
for (unsigned i = ignore_revision ? 1 : 0; i < ARRAY_SIZE(attrs); i++) {
|
|
snprintf(path, PATH_MAX, "%s/%s", pci_path, attrs[i]);
|
|
fp = fopen(path, "r");
|
|
if (!fp)
|
|
return -errno;
|
|
|
|
ret = fscanf(fp, "%x", &data[i]);
|
|
fclose(fp);
|
|
if (ret != 1)
|
|
return -errno;
|
|
|
|
}
|
|
|
|
device->revision_id = ignore_revision ? 0xff : data[0] & 0xff;
|
|
device->vendor_id = data[1] & 0xffff;
|
|
device->device_id = data[2] & 0xffff;
|
|
device->subvendor_id = data[3] & 0xffff;
|
|
device->subdevice_id = data[4] & 0xffff;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int parse_config_sysfs_file(int maj, int min,
|
|
drmPciDeviceInfoPtr device)
|
|
{
|
|
char path[PATH_MAX + 1], pci_path[PATH_MAX + 1];
|
|
unsigned char config[64];
|
|
int fd, ret;
|
|
|
|
get_pci_path(maj, min, pci_path);
|
|
|
|
snprintf(path, PATH_MAX, "%s/config", pci_path);
|
|
fd = open(path, O_RDONLY);
|
|
if (fd < 0)
|
|
return -errno;
|
|
|
|
ret = read(fd, config, sizeof(config));
|
|
close(fd);
|
|
if (ret < 0)
|
|
return -errno;
|
|
|
|
device->vendor_id = config[0] | (config[1] << 8);
|
|
device->device_id = config[2] | (config[3] << 8);
|
|
device->revision_id = config[8];
|
|
device->subvendor_id = config[44] | (config[45] << 8);
|
|
device->subdevice_id = config[46] | (config[47] << 8);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int drmParsePciDeviceInfo(int maj, int min,
|
|
drmPciDeviceInfoPtr device,
|
|
uint32_t flags)
|
|
{
|
|
#ifdef __linux__
|
|
if (!(flags & DRM_DEVICE_GET_PCI_REVISION))
|
|
return parse_separate_sysfs_files(maj, min, device, true);
|
|
|
|
if (parse_separate_sysfs_files(maj, min, device, false))
|
|
return parse_config_sysfs_file(maj, min, device);
|
|
|
|
return 0;
|
|
#elif defined(__OpenBSD__) || defined(__DragonFly__)
|
|
struct drm_pciinfo pinfo;
|
|
int fd, type;
|
|
|
|
type = drmGetMinorType(min);
|
|
if (type == -1)
|
|
return -ENODEV;
|
|
|
|
fd = drmOpenMinor(min, 0, type);
|
|
if (fd < 0)
|
|
return -errno;
|
|
|
|
if (drmIoctl(fd, DRM_IOCTL_GET_PCIINFO, &pinfo)) {
|
|
close(fd);
|
|
return -errno;
|
|
}
|
|
close(fd);
|
|
|
|
device->vendor_id = pinfo.vendor_id;
|
|
device->device_id = pinfo.device_id;
|
|
device->revision_id = pinfo.revision_id;
|
|
device->subvendor_id = pinfo.subvendor_id;
|
|
device->subdevice_id = pinfo.subdevice_id;
|
|
|
|
return 0;
|
|
#else
|
|
#warning "Missing implementation of drmParsePciDeviceInfo"
|
|
return -EINVAL;
|
|
#endif
|
|
}
|
|
|
|
static void drmFreePlatformDevice(drmDevicePtr device)
|
|
{
|
|
if (device->deviceinfo.platform) {
|
|
if (device->deviceinfo.platform->compatible) {
|
|
char **compatible = device->deviceinfo.platform->compatible;
|
|
|
|
while (*compatible) {
|
|
free(*compatible);
|
|
compatible++;
|
|
}
|
|
|
|
free(device->deviceinfo.platform->compatible);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void drmFreeHost1xDevice(drmDevicePtr device)
|
|
{
|
|
if (device->deviceinfo.host1x) {
|
|
if (device->deviceinfo.host1x->compatible) {
|
|
char **compatible = device->deviceinfo.host1x->compatible;
|
|
|
|
while (*compatible) {
|
|
free(*compatible);
|
|
compatible++;
|
|
}
|
|
|
|
free(device->deviceinfo.host1x->compatible);
|
|
}
|
|
}
|
|
}
|
|
|
|
drm_public void drmFreeDevice(drmDevicePtr *device)
|
|
{
|
|
if (device == NULL)
|
|
return;
|
|
|
|
if (*device) {
|
|
switch ((*device)->bustype) {
|
|
case DRM_BUS_PLATFORM:
|
|
drmFreePlatformDevice(*device);
|
|
break;
|
|
|
|
case DRM_BUS_HOST1X:
|
|
drmFreeHost1xDevice(*device);
|
|
break;
|
|
}
|
|
}
|
|
|
|
free(*device);
|
|
*device = NULL;
|
|
}
|
|
|
|
drm_public void drmFreeDevices(drmDevicePtr devices[], int count)
|
|
{
|
|
int i;
|
|
|
|
if (devices == NULL)
|
|
return;
|
|
|
|
for (i = 0; i < count; i++)
|
|
if (devices[i])
|
|
drmFreeDevice(&devices[i]);
|
|
}
|
|
|
|
static drmDevicePtr drmDeviceAlloc(unsigned int type, const char *node,
|
|
size_t bus_size, size_t device_size,
|
|
char **ptrp)
|
|
{
|
|
size_t max_node_length, extra, size;
|
|
drmDevicePtr device;
|
|
unsigned int i;
|
|
char *ptr;
|
|
|
|
max_node_length = ALIGN(drmGetMaxNodeName(), sizeof(void *));
|
|
extra = DRM_NODE_MAX * (sizeof(void *) + max_node_length);
|
|
|
|
size = sizeof(*device) + extra + bus_size + device_size;
|
|
|
|
device = calloc(1, size);
|
|
if (!device)
|
|
return NULL;
|
|
|
|
device->available_nodes = 1 << type;
|
|
|
|
ptr = (char *)device + sizeof(*device);
|
|
device->nodes = (char **)ptr;
|
|
|
|
ptr += DRM_NODE_MAX * sizeof(void *);
|
|
|
|
for (i = 0; i < DRM_NODE_MAX; i++) {
|
|
device->nodes[i] = ptr;
|
|
ptr += max_node_length;
|
|
}
|
|
|
|
memcpy(device->nodes[type], node, max_node_length);
|
|
|
|
*ptrp = ptr;
|
|
|
|
return device;
|
|
}
|
|
|
|
static int drmProcessPciDevice(drmDevicePtr *device,
|
|
const char *node, int node_type,
|
|
int maj, int min, bool fetch_deviceinfo,
|
|
uint32_t flags)
|
|
{
|
|
drmDevicePtr dev;
|
|
char *addr;
|
|
int ret;
|
|
|
|
dev = drmDeviceAlloc(node_type, node, sizeof(drmPciBusInfo),
|
|
sizeof(drmPciDeviceInfo), &addr);
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
|
|
dev->bustype = DRM_BUS_PCI;
|
|
|
|
dev->businfo.pci = (drmPciBusInfoPtr)addr;
|
|
|
|
ret = drmParsePciBusInfo(maj, min, dev->businfo.pci);
|
|
if (ret)
|
|
goto free_device;
|
|
|
|
// Fetch the device info if the user has requested it
|
|
if (fetch_deviceinfo) {
|
|
addr += sizeof(drmPciBusInfo);
|
|
dev->deviceinfo.pci = (drmPciDeviceInfoPtr)addr;
|
|
|
|
ret = drmParsePciDeviceInfo(maj, min, dev->deviceinfo.pci, flags);
|
|
if (ret)
|
|
goto free_device;
|
|
}
|
|
|
|
*device = dev;
|
|
|
|
return 0;
|
|
|
|
free_device:
|
|
free(dev);
|
|
return ret;
|
|
}
|
|
|
|
static int drmParseUsbBusInfo(int maj, int min, drmUsbBusInfoPtr info)
|
|
{
|
|
#ifdef __linux__
|
|
char path[PATH_MAX + 1], *value;
|
|
unsigned int bus, dev;
|
|
int ret;
|
|
|
|
snprintf(path, sizeof(path), "/sys/dev/char/%d:%d/device", maj, min);
|
|
|
|
value = sysfs_uevent_get(path, "BUSNUM");
|
|
if (!value)
|
|
return -ENOENT;
|
|
|
|
ret = sscanf(value, "%03u", &bus);
|
|
free(value);
|
|
|
|
if (ret <= 0)
|
|
return -errno;
|
|
|
|
value = sysfs_uevent_get(path, "DEVNUM");
|
|
if (!value)
|
|
return -ENOENT;
|
|
|
|
ret = sscanf(value, "%03u", &dev);
|
|
free(value);
|
|
|
|
if (ret <= 0)
|
|
return -errno;
|
|
|
|
info->bus = bus;
|
|
info->dev = dev;
|
|
|
|
return 0;
|
|
#else
|
|
#warning "Missing implementation of drmParseUsbBusInfo"
|
|
return -EINVAL;
|
|
#endif
|
|
}
|
|
|
|
static int drmParseUsbDeviceInfo(int maj, int min, drmUsbDeviceInfoPtr info)
|
|
{
|
|
#ifdef __linux__
|
|
char path[PATH_MAX + 1], *value;
|
|
unsigned int vendor, product;
|
|
int ret;
|
|
|
|
snprintf(path, sizeof(path), "/sys/dev/char/%d:%d/device", maj, min);
|
|
|
|
value = sysfs_uevent_get(path, "PRODUCT");
|
|
if (!value)
|
|
return -ENOENT;
|
|
|
|
ret = sscanf(value, "%x/%x", &vendor, &product);
|
|
free(value);
|
|
|
|
if (ret <= 0)
|
|
return -errno;
|
|
|
|
info->vendor = vendor;
|
|
info->product = product;
|
|
|
|
return 0;
|
|
#else
|
|
#warning "Missing implementation of drmParseUsbDeviceInfo"
|
|
return -EINVAL;
|
|
#endif
|
|
}
|
|
|
|
static int drmProcessUsbDevice(drmDevicePtr *device, const char *node,
|
|
int node_type, int maj, int min,
|
|
bool fetch_deviceinfo, uint32_t flags)
|
|
{
|
|
drmDevicePtr dev;
|
|
char *ptr;
|
|
int ret;
|
|
|
|
dev = drmDeviceAlloc(node_type, node, sizeof(drmUsbBusInfo),
|
|
sizeof(drmUsbDeviceInfo), &ptr);
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
|
|
dev->bustype = DRM_BUS_USB;
|
|
|
|
dev->businfo.usb = (drmUsbBusInfoPtr)ptr;
|
|
|
|
ret = drmParseUsbBusInfo(maj, min, dev->businfo.usb);
|
|
if (ret < 0)
|
|
goto free_device;
|
|
|
|
if (fetch_deviceinfo) {
|
|
ptr += sizeof(drmUsbBusInfo);
|
|
dev->deviceinfo.usb = (drmUsbDeviceInfoPtr)ptr;
|
|
|
|
ret = drmParseUsbDeviceInfo(maj, min, dev->deviceinfo.usb);
|
|
if (ret < 0)
|
|
goto free_device;
|
|
}
|
|
|
|
*device = dev;
|
|
|
|
return 0;
|
|
|
|
free_device:
|
|
free(dev);
|
|
return ret;
|
|
}
|
|
|
|
static int drmParseOFBusInfo(int maj, int min, char *fullname)
|
|
{
|
|
#ifdef __linux__
|
|
char path[PATH_MAX + 1], *name, *tmp_name;
|
|
|
|
snprintf(path, sizeof(path), "/sys/dev/char/%d:%d/device", maj, min);
|
|
|
|
name = sysfs_uevent_get(path, "OF_FULLNAME");
|
|
tmp_name = name;
|
|
if (!name) {
|
|
/* If the device lacks OF data, pick the MODALIAS info */
|
|
name = sysfs_uevent_get(path, "MODALIAS");
|
|
if (!name)
|
|
return -ENOENT;
|
|
|
|
/* .. and strip the MODALIAS=[platform,usb...]: part. */
|
|
tmp_name = strrchr(name, ':');
|
|
if (!tmp_name) {
|
|
free(name);
|
|
return -ENOENT;
|
|
}
|
|
tmp_name++;
|
|
}
|
|
|
|
strncpy(fullname, tmp_name, DRM_PLATFORM_DEVICE_NAME_LEN);
|
|
fullname[DRM_PLATFORM_DEVICE_NAME_LEN - 1] = '\0';
|
|
free(name);
|
|
|
|
return 0;
|
|
#else
|
|
#warning "Missing implementation of drmParseOFBusInfo"
|
|
return -EINVAL;
|
|
#endif
|
|
}
|
|
|
|
static int drmParseOFDeviceInfo(int maj, int min, char ***compatible)
|
|
{
|
|
#ifdef __linux__
|
|
char path[PATH_MAX + 1], *value, *tmp_name;
|
|
unsigned int count, i;
|
|
int err;
|
|
|
|
snprintf(path, sizeof(path), "/sys/dev/char/%d:%d/device", maj, min);
|
|
|
|
value = sysfs_uevent_get(path, "OF_COMPATIBLE_N");
|
|
if (value) {
|
|
sscanf(value, "%u", &count);
|
|
free(value);
|
|
} else {
|
|
/* Assume one entry if the device lack OF data */
|
|
count = 1;
|
|
}
|
|
|
|
*compatible = calloc(count + 1, sizeof(char *));
|
|
if (!*compatible)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
value = sysfs_uevent_get(path, "OF_COMPATIBLE_%u", i);
|
|
tmp_name = value;
|
|
if (!value) {
|
|
/* If the device lacks OF data, pick the MODALIAS info */
|
|
value = sysfs_uevent_get(path, "MODALIAS");
|
|
if (!value) {
|
|
err = -ENOENT;
|
|
goto free;
|
|
}
|
|
|
|
/* .. and strip the MODALIAS=[platform,usb...]: part. */
|
|
tmp_name = strrchr(value, ':');
|
|
if (!tmp_name) {
|
|
free(value);
|
|
return -ENOENT;
|
|
}
|
|
tmp_name = strdup(tmp_name + 1);
|
|
free(value);
|
|
}
|
|
|
|
(*compatible)[i] = tmp_name;
|
|
}
|
|
|
|
return 0;
|
|
|
|
free:
|
|
while (i--)
|
|
free((*compatible)[i]);
|
|
|
|
free(*compatible);
|
|
return err;
|
|
#else
|
|
#warning "Missing implementation of drmParseOFDeviceInfo"
|
|
return -EINVAL;
|
|
#endif
|
|
}
|
|
|
|
static int drmProcessPlatformDevice(drmDevicePtr *device,
|
|
const char *node, int node_type,
|
|
int maj, int min, bool fetch_deviceinfo,
|
|
uint32_t flags)
|
|
{
|
|
drmDevicePtr dev;
|
|
char *ptr;
|
|
int ret;
|
|
|
|
dev = drmDeviceAlloc(node_type, node, sizeof(drmPlatformBusInfo),
|
|
sizeof(drmPlatformDeviceInfo), &ptr);
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
|
|
dev->bustype = DRM_BUS_PLATFORM;
|
|
|
|
dev->businfo.platform = (drmPlatformBusInfoPtr)ptr;
|
|
|
|
ret = drmParseOFBusInfo(maj, min, dev->businfo.platform->fullname);
|
|
if (ret < 0)
|
|
goto free_device;
|
|
|
|
if (fetch_deviceinfo) {
|
|
ptr += sizeof(drmPlatformBusInfo);
|
|
dev->deviceinfo.platform = (drmPlatformDeviceInfoPtr)ptr;
|
|
|
|
ret = drmParseOFDeviceInfo(maj, min, &dev->deviceinfo.platform->compatible);
|
|
if (ret < 0)
|
|
goto free_device;
|
|
}
|
|
|
|
*device = dev;
|
|
|
|
return 0;
|
|
|
|
free_device:
|
|
free(dev);
|
|
return ret;
|
|
}
|
|
|
|
static int drmProcessHost1xDevice(drmDevicePtr *device,
|
|
const char *node, int node_type,
|
|
int maj, int min, bool fetch_deviceinfo,
|
|
uint32_t flags)
|
|
{
|
|
drmDevicePtr dev;
|
|
char *ptr;
|
|
int ret;
|
|
|
|
dev = drmDeviceAlloc(node_type, node, sizeof(drmHost1xBusInfo),
|
|
sizeof(drmHost1xDeviceInfo), &ptr);
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
|
|
dev->bustype = DRM_BUS_HOST1X;
|
|
|
|
dev->businfo.host1x = (drmHost1xBusInfoPtr)ptr;
|
|
|
|
ret = drmParseOFBusInfo(maj, min, dev->businfo.host1x->fullname);
|
|
if (ret < 0)
|
|
goto free_device;
|
|
|
|
if (fetch_deviceinfo) {
|
|
ptr += sizeof(drmHost1xBusInfo);
|
|
dev->deviceinfo.host1x = (drmHost1xDeviceInfoPtr)ptr;
|
|
|
|
ret = drmParseOFDeviceInfo(maj, min, &dev->deviceinfo.host1x->compatible);
|
|
if (ret < 0)
|
|
goto free_device;
|
|
}
|
|
|
|
*device = dev;
|
|
|
|
return 0;
|
|
|
|
free_device:
|
|
free(dev);
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
process_device(drmDevicePtr *device, const char *d_name,
|
|
int req_subsystem_type,
|
|
bool fetch_deviceinfo, uint32_t flags)
|
|
{
|
|
struct stat sbuf;
|
|
char node[PATH_MAX + 1];
|
|
int node_type, subsystem_type;
|
|
unsigned int maj, min;
|
|
|
|
node_type = drmGetNodeType(d_name);
|
|
if (node_type < 0)
|
|
return -1;
|
|
|
|
snprintf(node, PATH_MAX, "%s/%s", DRM_DIR_NAME, d_name);
|
|
if (stat(node, &sbuf))
|
|
return -1;
|
|
|
|
maj = major(sbuf.st_rdev);
|
|
min = minor(sbuf.st_rdev);
|
|
|
|
if (!drmNodeIsDRM(maj, min) || !S_ISCHR(sbuf.st_mode))
|
|
return -1;
|
|
|
|
subsystem_type = drmParseSubsystemType(maj, min);
|
|
if (req_subsystem_type != -1 && req_subsystem_type != subsystem_type)
|
|
return -1;
|
|
|
|
switch (subsystem_type) {
|
|
case DRM_BUS_PCI:
|
|
case DRM_BUS_VIRTIO:
|
|
return drmProcessPciDevice(device, node, node_type, maj, min,
|
|
fetch_deviceinfo, flags);
|
|
case DRM_BUS_USB:
|
|
return drmProcessUsbDevice(device, node, node_type, maj, min,
|
|
fetch_deviceinfo, flags);
|
|
case DRM_BUS_PLATFORM:
|
|
return drmProcessPlatformDevice(device, node, node_type, maj, min,
|
|
fetch_deviceinfo, flags);
|
|
case DRM_BUS_HOST1X:
|
|
return drmProcessHost1xDevice(device, node, node_type, maj, min,
|
|
fetch_deviceinfo, flags);
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/* Consider devices located on the same bus as duplicate and fold the respective
|
|
* entries into a single one.
|
|
*
|
|
* Note: this leaves "gaps" in the array, while preserving the length.
|
|
*/
|
|
static void drmFoldDuplicatedDevices(drmDevicePtr local_devices[], int count)
|
|
{
|
|
int node_type, i, j;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
for (j = i + 1; j < count; j++) {
|
|
if (drmDevicesEqual(local_devices[i], local_devices[j])) {
|
|
local_devices[i]->available_nodes |= local_devices[j]->available_nodes;
|
|
node_type = log2(local_devices[j]->available_nodes);
|
|
memcpy(local_devices[i]->nodes[node_type],
|
|
local_devices[j]->nodes[node_type], drmGetMaxNodeName());
|
|
drmFreeDevice(&local_devices[j]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Check that the given flags are valid returning 0 on success */
|
|
static int
|
|
drm_device_validate_flags(uint32_t flags)
|
|
{
|
|
return (flags & ~DRM_DEVICE_GET_PCI_REVISION);
|
|
}
|
|
|
|
static bool
|
|
drm_device_has_rdev(drmDevicePtr device, dev_t find_rdev)
|
|
{
|
|
struct stat sbuf;
|
|
|
|
for (int i = 0; i < DRM_NODE_MAX; i++) {
|
|
if (device->available_nodes & 1 << i) {
|
|
if (stat(device->nodes[i], &sbuf) == 0 &&
|
|
sbuf.st_rdev == find_rdev)
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* The kernel drm core has a number of places that assume maximum of
|
|
* 3x64 devices nodes. That's 64 for each of primary, control and
|
|
* render nodes. Rounded it up to 256 for simplicity.
|
|
*/
|
|
#define MAX_DRM_NODES 256
|
|
|
|
/**
|
|
* Get information about the opened drm device
|
|
*
|
|
* \param fd file descriptor of the drm device
|
|
* \param flags feature/behaviour bitmask
|
|
* \param device the address of a drmDevicePtr where the information
|
|
* will be allocated in stored
|
|
*
|
|
* \return zero on success, negative error code otherwise.
|
|
*
|
|
* \note Unlike drmGetDevice it does not retrieve the pci device revision field
|
|
* unless the DRM_DEVICE_GET_PCI_REVISION \p flag is set.
|
|
*/
|
|
drm_public int drmGetDevice2(int fd, uint32_t flags, drmDevicePtr *device)
|
|
{
|
|
#ifdef __OpenBSD__
|
|
/*
|
|
* DRI device nodes on OpenBSD are not in their own directory, they reside
|
|
* in /dev along with a large number of statically generated /dev nodes.
|
|
* Avoid stat'ing all of /dev needlessly by implementing this custom path.
|
|
*/
|
|
drmDevicePtr d;
|
|
struct stat sbuf;
|
|
char node[PATH_MAX + 1];
|
|
const char *dev_name;
|
|
int node_type, subsystem_type;
|
|
int maj, min, n, ret, base;
|
|
|
|
if (fd == -1 || device == NULL)
|
|
return -EINVAL;
|
|
|
|
if (fstat(fd, &sbuf))
|
|
return -errno;
|
|
|
|
maj = major(sbuf.st_rdev);
|
|
min = minor(sbuf.st_rdev);
|
|
|
|
if (!drmNodeIsDRM(maj, min) || !S_ISCHR(sbuf.st_mode))
|
|
return -EINVAL;
|
|
|
|
node_type = drmGetMinorType(min);
|
|
if (node_type == -1)
|
|
return -ENODEV;
|
|
|
|
switch (node_type) {
|
|
case DRM_NODE_PRIMARY:
|
|
dev_name = DRM_DEV_NAME;
|
|
break;
|
|
case DRM_NODE_CONTROL:
|
|
dev_name = DRM_CONTROL_DEV_NAME;
|
|
break;
|
|
case DRM_NODE_RENDER:
|
|
dev_name = DRM_RENDER_DEV_NAME;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
};
|
|
|
|
base = drmGetMinorBase(node_type);
|
|
if (base < 0)
|
|
return -EINVAL;
|
|
|
|
n = snprintf(node, PATH_MAX, dev_name, DRM_DIR_NAME, min - base);
|
|
if (n == -1 || n >= PATH_MAX)
|
|
return -errno;
|
|
if (stat(node, &sbuf))
|
|
return -EINVAL;
|
|
|
|
subsystem_type = drmParseSubsystemType(maj, min);
|
|
if (subsystem_type != DRM_BUS_PCI)
|
|
return -ENODEV;
|
|
|
|
ret = drmProcessPciDevice(&d, node, node_type, maj, min, true, flags);
|
|
if (ret)
|
|
return ret;
|
|
|
|
*device = d;
|
|
|
|
return 0;
|
|
#else
|
|
drmDevicePtr local_devices[MAX_DRM_NODES];
|
|
drmDevicePtr d;
|
|
DIR *sysdir;
|
|
struct dirent *dent;
|
|
struct stat sbuf;
|
|
int subsystem_type;
|
|
int maj, min;
|
|
int ret, i, node_count;
|
|
dev_t find_rdev;
|
|
|
|
if (drm_device_validate_flags(flags))
|
|
return -EINVAL;
|
|
|
|
if (fd == -1 || device == NULL)
|
|
return -EINVAL;
|
|
|
|
if (fstat(fd, &sbuf))
|
|
return -errno;
|
|
|
|
find_rdev = sbuf.st_rdev;
|
|
maj = major(sbuf.st_rdev);
|
|
min = minor(sbuf.st_rdev);
|
|
|
|
if (!drmNodeIsDRM(maj, min) || !S_ISCHR(sbuf.st_mode))
|
|
return -EINVAL;
|
|
|
|
subsystem_type = drmParseSubsystemType(maj, min);
|
|
if (subsystem_type < 0)
|
|
return subsystem_type;
|
|
|
|
sysdir = opendir(DRM_DIR_NAME);
|
|
if (!sysdir)
|
|
return -errno;
|
|
|
|
i = 0;
|
|
while ((dent = readdir(sysdir))) {
|
|
ret = process_device(&d, dent->d_name, subsystem_type, true, flags);
|
|
if (ret)
|
|
continue;
|
|
|
|
if (i >= MAX_DRM_NODES) {
|
|
fprintf(stderr, "More than %d drm nodes detected. "
|
|
"Please report a bug - that should not happen.\n"
|
|
"Skipping extra nodes\n", MAX_DRM_NODES);
|
|
break;
|
|
}
|
|
local_devices[i] = d;
|
|
i++;
|
|
}
|
|
node_count = i;
|
|
|
|
drmFoldDuplicatedDevices(local_devices, node_count);
|
|
|
|
*device = NULL;
|
|
|
|
for (i = 0; i < node_count; i++) {
|
|
if (!local_devices[i])
|
|
continue;
|
|
|
|
if (drm_device_has_rdev(local_devices[i], find_rdev))
|
|
*device = local_devices[i];
|
|
else
|
|
drmFreeDevice(&local_devices[i]);
|
|
}
|
|
|
|
closedir(sysdir);
|
|
if (*device == NULL)
|
|
return -ENODEV;
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* Get information about the opened drm device
|
|
*
|
|
* \param fd file descriptor of the drm device
|
|
* \param device the address of a drmDevicePtr where the information
|
|
* will be allocated in stored
|
|
*
|
|
* \return zero on success, negative error code otherwise.
|
|
*/
|
|
drm_public int drmGetDevice(int fd, drmDevicePtr *device)
|
|
{
|
|
return drmGetDevice2(fd, DRM_DEVICE_GET_PCI_REVISION, device);
|
|
}
|
|
|
|
/**
|
|
* Get drm devices on the system
|
|
*
|
|
* \param flags feature/behaviour bitmask
|
|
* \param devices the array of devices with drmDevicePtr elements
|
|
* can be NULL to get the device number first
|
|
* \param max_devices the maximum number of devices for the array
|
|
*
|
|
* \return on error - negative error code,
|
|
* if devices is NULL - total number of devices available on the system,
|
|
* alternatively the number of devices stored in devices[], which is
|
|
* capped by the max_devices.
|
|
*
|
|
* \note Unlike drmGetDevices it does not retrieve the pci device revision field
|
|
* unless the DRM_DEVICE_GET_PCI_REVISION \p flag is set.
|
|
*/
|
|
drm_public int drmGetDevices2(uint32_t flags, drmDevicePtr devices[],
|
|
int max_devices)
|
|
{
|
|
drmDevicePtr local_devices[MAX_DRM_NODES];
|
|
drmDevicePtr device;
|
|
DIR *sysdir;
|
|
struct dirent *dent;
|
|
int ret, i, node_count, device_count;
|
|
|
|
if (drm_device_validate_flags(flags))
|
|
return -EINVAL;
|
|
|
|
sysdir = opendir(DRM_DIR_NAME);
|
|
if (!sysdir)
|
|
return -errno;
|
|
|
|
i = 0;
|
|
while ((dent = readdir(sysdir))) {
|
|
ret = process_device(&device, dent->d_name, -1, devices != NULL, flags);
|
|
if (ret)
|
|
continue;
|
|
|
|
if (i >= MAX_DRM_NODES) {
|
|
fprintf(stderr, "More than %d drm nodes detected. "
|
|
"Please report a bug - that should not happen.\n"
|
|
"Skipping extra nodes\n", MAX_DRM_NODES);
|
|
break;
|
|
}
|
|
local_devices[i] = device;
|
|
i++;
|
|
}
|
|
node_count = i;
|
|
|
|
drmFoldDuplicatedDevices(local_devices, node_count);
|
|
|
|
device_count = 0;
|
|
for (i = 0; i < node_count; i++) {
|
|
if (!local_devices[i])
|
|
continue;
|
|
|
|
if ((devices != NULL) && (device_count < max_devices))
|
|
devices[device_count] = local_devices[i];
|
|
else
|
|
drmFreeDevice(&local_devices[i]);
|
|
|
|
device_count++;
|
|
}
|
|
|
|
closedir(sysdir);
|
|
return device_count;
|
|
}
|
|
|
|
/**
|
|
* Get drm devices on the system
|
|
*
|
|
* \param devices the array of devices with drmDevicePtr elements
|
|
* can be NULL to get the device number first
|
|
* \param max_devices the maximum number of devices for the array
|
|
*
|
|
* \return on error - negative error code,
|
|
* if devices is NULL - total number of devices available on the system,
|
|
* alternatively the number of devices stored in devices[], which is
|
|
* capped by the max_devices.
|
|
*/
|
|
drm_public int drmGetDevices(drmDevicePtr devices[], int max_devices)
|
|
{
|
|
return drmGetDevices2(DRM_DEVICE_GET_PCI_REVISION, devices, max_devices);
|
|
}
|
|
|
|
drm_public char *drmGetDeviceNameFromFd2(int fd)
|
|
{
|
|
#ifdef __linux__
|
|
struct stat sbuf;
|
|
char path[PATH_MAX + 1], *value;
|
|
unsigned int maj, min;
|
|
|
|
if (fstat(fd, &sbuf))
|
|
return NULL;
|
|
|
|
maj = major(sbuf.st_rdev);
|
|
min = minor(sbuf.st_rdev);
|
|
|
|
if (!drmNodeIsDRM(maj, min) || !S_ISCHR(sbuf.st_mode))
|
|
return NULL;
|
|
|
|
snprintf(path, sizeof(path), "/sys/dev/char/%d:%d", maj, min);
|
|
|
|
value = sysfs_uevent_get(path, "DEVNAME");
|
|
if (!value)
|
|
return NULL;
|
|
|
|
snprintf(path, sizeof(path), "/dev/%s", value);
|
|
free(value);
|
|
|
|
return strdup(path);
|
|
#else
|
|
struct stat sbuf;
|
|
char node[PATH_MAX + 1];
|
|
const char *dev_name;
|
|
int node_type;
|
|
int maj, min, n, base;
|
|
|
|
if (fstat(fd, &sbuf))
|
|
return NULL;
|
|
|
|
maj = major(sbuf.st_rdev);
|
|
min = minor(sbuf.st_rdev);
|
|
|
|
if (!drmNodeIsDRM(maj, min) || !S_ISCHR(sbuf.st_mode))
|
|
return NULL;
|
|
|
|
node_type = drmGetMinorType(min);
|
|
if (node_type == -1)
|
|
return NULL;
|
|
|
|
switch (node_type) {
|
|
case DRM_NODE_PRIMARY:
|
|
dev_name = DRM_DEV_NAME;
|
|
break;
|
|
case DRM_NODE_CONTROL:
|
|
dev_name = DRM_CONTROL_DEV_NAME;
|
|
break;
|
|
case DRM_NODE_RENDER:
|
|
dev_name = DRM_RENDER_DEV_NAME;
|
|
break;
|
|
default:
|
|
return NULL;
|
|
};
|
|
|
|
base = drmGetMinorBase(node_type);
|
|
if (base < 0)
|
|
return NULL;
|
|
|
|
n = snprintf(node, PATH_MAX, dev_name, DRM_DIR_NAME, min - base);
|
|
if (n == -1 || n >= PATH_MAX)
|
|
return NULL;
|
|
|
|
return strdup(node);
|
|
#endif
|
|
}
|
|
|
|
drm_public int drmSyncobjCreate(int fd, uint32_t flags, uint32_t *handle)
|
|
{
|
|
struct drm_syncobj_create args;
|
|
int ret;
|
|
|
|
memclear(args);
|
|
args.flags = flags;
|
|
args.handle = 0;
|
|
ret = drmIoctl(fd, DRM_IOCTL_SYNCOBJ_CREATE, &args);
|
|
if (ret)
|
|
return ret;
|
|
*handle = args.handle;
|
|
return 0;
|
|
}
|
|
|
|
drm_public int drmSyncobjDestroy(int fd, uint32_t handle)
|
|
{
|
|
struct drm_syncobj_destroy args;
|
|
|
|
memclear(args);
|
|
args.handle = handle;
|
|
return drmIoctl(fd, DRM_IOCTL_SYNCOBJ_DESTROY, &args);
|
|
}
|
|
|
|
drm_public int drmSyncobjHandleToFD(int fd, uint32_t handle, int *obj_fd)
|
|
{
|
|
struct drm_syncobj_handle args;
|
|
int ret;
|
|
|
|
memclear(args);
|
|
args.fd = -1;
|
|
args.handle = handle;
|
|
ret = drmIoctl(fd, DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD, &args);
|
|
if (ret)
|
|
return ret;
|
|
*obj_fd = args.fd;
|
|
return 0;
|
|
}
|
|
|
|
drm_public int drmSyncobjFDToHandle(int fd, int obj_fd, uint32_t *handle)
|
|
{
|
|
struct drm_syncobj_handle args;
|
|
int ret;
|
|
|
|
memclear(args);
|
|
args.fd = obj_fd;
|
|
args.handle = 0;
|
|
ret = drmIoctl(fd, DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE, &args);
|
|
if (ret)
|
|
return ret;
|
|
*handle = args.handle;
|
|
return 0;
|
|
}
|
|
|
|
drm_public int drmSyncobjImportSyncFile(int fd, uint32_t handle,
|
|
int sync_file_fd)
|
|
{
|
|
struct drm_syncobj_handle args;
|
|
|
|
memclear(args);
|
|
args.fd = sync_file_fd;
|
|
args.handle = handle;
|
|
args.flags = DRM_SYNCOBJ_FD_TO_HANDLE_FLAGS_IMPORT_SYNC_FILE;
|
|
return drmIoctl(fd, DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE, &args);
|
|
}
|
|
|
|
drm_public int drmSyncobjExportSyncFile(int fd, uint32_t handle,
|
|
int *sync_file_fd)
|
|
{
|
|
struct drm_syncobj_handle args;
|
|
int ret;
|
|
|
|
memclear(args);
|
|
args.fd = -1;
|
|
args.handle = handle;
|
|
args.flags = DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE;
|
|
ret = drmIoctl(fd, DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD, &args);
|
|
if (ret)
|
|
return ret;
|
|
*sync_file_fd = args.fd;
|
|
return 0;
|
|
}
|
|
|
|
drm_public int drmSyncobjWait(int fd, uint32_t *handles, unsigned num_handles,
|
|
int64_t timeout_nsec, unsigned flags,
|
|
uint32_t *first_signaled)
|
|
{
|
|
struct drm_syncobj_wait args;
|
|
int ret;
|
|
|
|
memclear(args);
|
|
args.handles = (uintptr_t)handles;
|
|
args.timeout_nsec = timeout_nsec;
|
|
args.count_handles = num_handles;
|
|
args.flags = flags;
|
|
|
|
ret = drmIoctl(fd, DRM_IOCTL_SYNCOBJ_WAIT, &args);
|
|
if (ret < 0)
|
|
return -errno;
|
|
|
|
if (first_signaled)
|
|
*first_signaled = args.first_signaled;
|
|
return ret;
|
|
}
|
|
|
|
drm_public int drmSyncobjReset(int fd, const uint32_t *handles,
|
|
uint32_t handle_count)
|
|
{
|
|
struct drm_syncobj_array args;
|
|
int ret;
|
|
|
|
memclear(args);
|
|
args.handles = (uintptr_t)handles;
|
|
args.count_handles = handle_count;
|
|
|
|
ret = drmIoctl(fd, DRM_IOCTL_SYNCOBJ_RESET, &args);
|
|
return ret;
|
|
}
|
|
|
|
drm_public int drmSyncobjSignal(int fd, const uint32_t *handles,
|
|
uint32_t handle_count)
|
|
{
|
|
struct drm_syncobj_array args;
|
|
int ret;
|
|
|
|
memclear(args);
|
|
args.handles = (uintptr_t)handles;
|
|
args.count_handles = handle_count;
|
|
|
|
ret = drmIoctl(fd, DRM_IOCTL_SYNCOBJ_SIGNAL, &args);
|
|
return ret;
|
|
}
|