/**
- * \file xf86drm.c
+ * \file xf86drm.c
* User-level interface to DRM device
*
* \author Rickard E. (Rik) Faith <faith@valinux.com>
#endif
#include <stdio.h>
#include <stdlib.h>
+#include <stdbool.h>
#include <unistd.h>
#include <string.h>
#include <strings.h>
#include <ctype.h>
+#include <dirent.h>
+#include <stddef.h>
#include <fcntl.h>
#include <errno.h>
+#include <limits.h>
#include <signal.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#define stat_t struct stat
#include <sys/ioctl.h>
-#include <sys/mman.h>
#include <sys/time.h>
#include <stdarg.h>
+#ifdef MAJOR_IN_MKDEV
+#include <sys/mkdev.h>
+#endif
+#ifdef MAJOR_IN_SYSMACROS
+#include <sys/sysmacros.h>
+#endif
+#include <math.h>
/* Not all systems have MAP_FAILED defined */
#ifndef MAP_FAILED
#endif
#include "xf86drm.h"
+#include "libdrm_macros.h"
+
+#include "util_math.h"
+
+#ifdef __OpenBSD__
+#define DRM_PRIMARY_MINOR_NAME "drm"
+#define DRM_CONTROL_MINOR_NAME "drmC"
+#define DRM_RENDER_MINOR_NAME "drmR"
+#else
+#define DRM_PRIMARY_MINOR_NAME "card"
+#define DRM_CONTROL_MINOR_NAME "controlD"
+#define DRM_RENDER_MINOR_NAME "renderD"
+#endif
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
#define DRM_MAJOR 145
#define DRM_MAJOR 34
#endif
-# ifdef __OpenBSD__
-# define DRM_MAJOR 81
-# endif
+#ifdef __OpenBSD__
+#ifdef __i386__
+#define DRM_MAJOR 88
+#else
+#define DRM_MAJOR 87
+#endif
+#endif /* __OpenBSD__ */
#ifndef DRM_MAJOR
-#define DRM_MAJOR 226 /* Linux */
+#define DRM_MAJOR 226 /* Linux */
#endif
-/*
- * This definition needs to be changed on some systems if dev_t is a structure.
- * If there is a header file we can get it from, there would be best.
- */
-#ifndef makedev
-#define makedev(x,y) ((dev_t)(((x) << 8) | (y)))
+#ifdef __OpenBSD__
+struct drm_pciinfo {
+ uint16_t domain;
+ uint8_t bus;
+ uint8_t dev;
+ uint8_t func;
+ uint16_t vendor_id;
+ uint16_t device_id;
+ uint16_t subvendor_id;
+ uint16_t subdevice_id;
+ uint8_t revision_id;
+};
+
+#define DRM_IOCTL_GET_PCIINFO DRM_IOR(0x15, struct drm_pciinfo)
#endif
#define DRM_MSG_VERBOSITY 3
-#define DRM_NODE_CONTROL 0
-#define DRM_NODE_RENDER 1
+#define memclear(s) memset(&s, 0, sizeof(s))
static drmServerInfoPtr drm_server_info;
return vfprintf(stderr, format, ap);
}
-typedef int DRM_PRINTFLIKE(1, 0) (*debug_msg_func_t)(const char *format,
- va_list ap);
-
-static debug_msg_func_t drm_debug_print = drmDebugPrint;
-
void
drmMsg(const char *format, ...)
{
- va_list ap;
+ va_list ap;
const char *env;
- if (((env = getenv("LIBGL_DEBUG")) && strstr(env, "verbose")) || drm_server_info)
+ if (((env = getenv("LIBGL_DEBUG")) && strstr(env, "verbose")) ||
+ (drm_server_info && drm_server_info->debug_print))
{
- va_start(ap, format);
- if (drm_server_info) {
- drm_server_info->debug_print(format,ap);
- } else {
- drm_debug_print(format, ap);
- }
- va_end(ap);
+ va_start(ap, format);
+ if (drm_server_info) {
+ drm_server_info->debug_print(format,ap);
+ } else {
+ drmDebugPrint(format, ap);
+ }
+ va_end(ap);
}
}
-void
-drmSetDebugMsgFunction(debug_msg_func_t debug_msg_ptr)
-{
- drm_debug_print = debug_msg_ptr;
-}
-
static void *drmHashTable = NULL; /* Context switch callbacks */
void *drmGetHashTable(void)
void *drmMalloc(int size)
{
- void *pt;
- if ((pt = malloc(size)))
- memset(pt, 0, size);
- return pt;
+ return calloc(1, size);
}
void drmFree(void *pt)
{
- if (pt)
- free(pt);
+ free(pt);
}
/**
int
drmIoctl(int fd, unsigned long request, void *arg)
{
- int ret;
+ int ret;
do {
- ret = ioctl(fd, request, arg);
+ ret = ioctl(fd, request, arg);
} while (ret == -1 && (errno == EINTR || errno == EAGAIN));
return ret;
}
drmHashEntry *entry;
if (!drmHashTable)
- drmHashTable = drmHashCreate();
+ drmHashTable = drmHashCreate();
if (drmHashLookup(drmHashTable, key, &value)) {
- entry = drmMalloc(sizeof(*entry));
- entry->fd = fd;
- entry->f = NULL;
- entry->tagTable = drmHashCreate();
- drmHashInsert(drmHashTable, key, entry);
+ entry = drmMalloc(sizeof(*entry));
+ entry->fd = fd;
+ entry->f = NULL;
+ entry->tagTable = drmHashCreate();
+ drmHashInsert(drmHashTable, key, entry);
} else {
- entry = value;
+ entry = value;
}
return entry;
}
{
/* First, check if the IDs are exactly the same */
if (strcasecmp(id1, id2) == 0)
- return 1;
+ return 1;
/* Try to match old/new-style PCI bus IDs. */
if (strncasecmp(id1, "pci", 3) == 0) {
- unsigned int o1, b1, d1, f1;
- unsigned int o2, b2, d2, f2;
- int ret;
-
- ret = sscanf(id1, "pci:%04x:%02x:%02x.%u", &o1, &b1, &d1, &f1);
- if (ret != 4) {
- o1 = 0;
- ret = sscanf(id1, "PCI:%u:%u:%u", &b1, &d1, &f1);
- if (ret != 3)
- return 0;
- }
-
- ret = sscanf(id2, "pci:%04x:%02x:%02x.%u", &o2, &b2, &d2, &f2);
- if (ret != 4) {
- o2 = 0;
- ret = sscanf(id2, "PCI:%u:%u:%u", &b2, &d2, &f2);
- if (ret != 3)
- return 0;
- }
-
- /* If domains aren't properly supported by the kernel interface,
- * just ignore them, which sucks less than picking a totally random
- * card with "open by name"
- */
- if (!pci_domain_ok)
- o1 = o2 = 0;
-
- if ((o1 != o2) || (b1 != b2) || (d1 != d2) || (f1 != f2))
- return 0;
- else
- return 1;
+ unsigned int o1, b1, d1, f1;
+ unsigned int o2, b2, d2, f2;
+ int ret;
+
+ ret = sscanf(id1, "pci:%04x:%02x:%02x.%u", &o1, &b1, &d1, &f1);
+ if (ret != 4) {
+ o1 = 0;
+ ret = sscanf(id1, "PCI:%u:%u:%u", &b1, &d1, &f1);
+ if (ret != 3)
+ return 0;
+ }
+
+ ret = sscanf(id2, "pci:%04x:%02x:%02x.%u", &o2, &b2, &d2, &f2);
+ if (ret != 4) {
+ o2 = 0;
+ ret = sscanf(id2, "PCI:%u:%u:%u", &b2, &d2, &f2);
+ if (ret != 3)
+ return 0;
+ }
+
+ /* If domains aren't properly supported by the kernel interface,
+ * just ignore them, which sucks less than picking a totally random
+ * card with "open by name"
+ */
+ if (!pci_domain_ok)
+ o1 = o2 = 0;
+
+ if ((o1 != o2) || (b1 != b2) || (d1 != d2) || (f1 != f2))
+ return 0;
+ else
+ return 1;
}
return 0;
}
* If any other failure happened then it will output error mesage using
* drmMsg() call.
*/
+#if !defined(UDEV)
static int chown_check_return(const char *path, uid_t owner, gid_t group)
{
- int rv;
+ int rv;
- do {
- rv = chown(path, owner, group);
- } while (rv != 0 && errno == EINTR);
+ do {
+ rv = chown(path, owner, group);
+ } while (rv != 0 && errno == EINTR);
- if (rv == 0)
- return 0;
+ if (rv == 0)
+ return 0;
- drmMsg("Failed to change owner or group for file %s! %d: %s\n",
- path, errno, strerror(errno));
- return -1;
+ drmMsg("Failed to change owner or group for file %s! %d: %s\n",
+ path, errno, strerror(errno));
+ return -1;
}
+#endif
/**
* Open the DRM device, creating it if necessary.
*
* \param dev major and minor numbers of the device.
* \param minor minor number of the device.
- *
+ *
* \return a file descriptor on success, or a negative value on error.
*
* \internal
* special file node with the major and minor numbers specified by \p dev and
* parent directory if necessary and was called by root.
*/
-static int drmOpenDevice(long dev, int minor, int type)
+static int drmOpenDevice(dev_t dev, int minor, int type)
{
stat_t st;
+ const char *dev_name;
char buf[64];
int fd;
mode_t devmode = DRM_DEV_MODE, serv_mode;
+ gid_t serv_group;
+#if !defined(UDEV)
int isroot = !geteuid();
uid_t user = DRM_DEV_UID;
- gid_t group = DRM_DEV_GID, serv_group;
-
- sprintf(buf, type ? DRM_DEV_NAME : DRM_CONTROL_DEV_NAME, DRM_DIR_NAME, minor);
+ gid_t group = DRM_DEV_GID;
+#endif
+
+ 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);
drmMsg("drmOpenDevice: node name is %s\n", buf);
- if (drm_server_info) {
- drm_server_info->get_perms(&serv_group, &serv_mode);
- devmode = serv_mode ? serv_mode : DRM_DEV_MODE;
- devmode &= ~(S_IXUSR|S_IXGRP|S_IXOTH);
- group = (serv_group >= 0) ? serv_group : DRM_DEV_GID;
+ if (drm_server_info && drm_server_info->get_perms) {
+ drm_server_info->get_perms(&serv_group, &serv_mode);
+ devmode = serv_mode ? serv_mode : DRM_DEV_MODE;
+ devmode &= ~(S_IXUSR|S_IXGRP|S_IXOTH);
}
#if !defined(UDEV)
if (stat(DRM_DIR_NAME, &st)) {
- if (!isroot)
- return DRM_ERR_NOT_ROOT;
- mkdir(DRM_DIR_NAME, DRM_DEV_DIRMODE);
- chown_check_return(DRM_DIR_NAME, 0, 0); /* root:root */
- chmod(DRM_DIR_NAME, DRM_DEV_DIRMODE);
+ if (!isroot)
+ return DRM_ERR_NOT_ROOT;
+ mkdir(DRM_DIR_NAME, DRM_DEV_DIRMODE);
+ chown_check_return(DRM_DIR_NAME, 0, 0); /* root:root */
+ chmod(DRM_DIR_NAME, DRM_DEV_DIRMODE);
}
/* Check if the device node exists and create it if necessary. */
if (stat(buf, &st)) {
- if (!isroot)
- return DRM_ERR_NOT_ROOT;
- remove(buf);
- mknod(buf, S_IFCHR | devmode, dev);
+ if (!isroot)
+ return DRM_ERR_NOT_ROOT;
+ remove(buf);
+ mknod(buf, S_IFCHR | devmode, dev);
}
- if (drm_server_info) {
- chown_check_return(buf, user, group);
- chmod(buf, devmode);
+ if (drm_server_info && drm_server_info->get_perms) {
+ group = ((int)serv_group >= 0) ? serv_group : DRM_DEV_GID;
+ chown_check_return(buf, user, group);
+ chmod(buf, devmode);
}
#else
/* if we modprobed then wait for udev */
{
- int udev_count = 0;
+ int udev_count = 0;
wait_for_udev:
if (stat(DRM_DIR_NAME, &st)) {
- usleep(20);
- udev_count++;
-
- if (udev_count == 50)
- return -1;
- goto wait_for_udev;
- }
-
- if (stat(buf, &st)) {
- usleep(20);
- udev_count++;
-
- if (udev_count == 50)
- return -1;
- goto wait_for_udev;
- }
+ usleep(20);
+ udev_count++;
+
+ if (udev_count == 50)
+ return -1;
+ goto wait_for_udev;
+ }
+
+ if (stat(buf, &st)) {
+ usleep(20);
+ udev_count++;
+
+ if (udev_count == 50)
+ return -1;
+ goto wait_for_udev;
+ }
}
#endif
fd = open(buf, O_RDWR, 0);
drmMsg("drmOpenDevice: open result is %d, (%s)\n",
- fd, fd < 0 ? strerror(errno) : "OK");
+ fd, fd < 0 ? strerror(errno) : "OK");
if (fd >= 0)
- return fd;
+ return fd;
#if !defined(UDEV)
/* Check if the device node is not what we expect it to be, and recreate it
* and try again if so.
*/
if (st.st_rdev != dev) {
- if (!isroot)
- return DRM_ERR_NOT_ROOT;
- remove(buf);
- mknod(buf, S_IFCHR | devmode, dev);
- if (drm_server_info) {
- chown_check_return(buf, user, group);
- chmod(buf, devmode);
- }
+ if (!isroot)
+ return DRM_ERR_NOT_ROOT;
+ remove(buf);
+ mknod(buf, S_IFCHR | devmode, dev);
+ if (drm_server_info && drm_server_info->get_perms) {
+ chown_check_return(buf, user, group);
+ chmod(buf, devmode);
+ }
}
fd = open(buf, O_RDWR, 0);
drmMsg("drmOpenDevice: open result is %d, (%s)\n",
- fd, fd < 0 ? strerror(errno) : "OK");
+ fd, fd < 0 ? strerror(errno) : "OK");
if (fd >= 0)
- return fd;
+ return fd;
drmMsg("drmOpenDevice: Open failed\n");
remove(buf);
* \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.
{
int fd;
char buf[64];
-
+ const char *dev_name;
+
if (create)
- return drmOpenDevice(makedev(DRM_MAJOR, minor), minor, type);
-
- sprintf(buf, type ? DRM_DEV_NAME : DRM_CONTROL_DEV_NAME, DRM_DIR_NAME, minor);
+ 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);
if ((fd = open(buf, O_RDWR, 0)) >= 0)
- return fd;
+ return fd;
return -errno;
}
/**
* Determine whether the DRM kernel driver has been loaded.
- *
+ *
* \return 1 if the DRM driver is loaded, 0 otherwise.
*
- * \internal
+ * \internal
* Determine the presence of the kernel driver by attempting to open the 0
* minor and get version information. For backward compatibility with older
* Linux implementations, /proc/dri is also checked.
int retval = 0;
int fd;
- if ((fd = drmOpenMinor(0, 1, DRM_NODE_RENDER)) < 0) {
+ 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;
+ /* Try proc for backward Linux compatibility */
+ if (!access("/proc/dri/0", R_OK))
+ return 1;
#endif
- return 0;
+ return 0;
}
-
+
if ((version = drmGetVersion(fd))) {
- retval = 1;
- drmFreeVersion(version);
+ 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.
*
*
* \sa drmOpenMinor() and drmGetBusid().
*/
-static int drmOpenByBusid(const char *busid)
+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 = 0; i < DRM_MAX_MINOR; i++) {
- fd = drmOpenMinor(i, 1, DRM_NODE_RENDER);
- 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)) {
+ 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;
+ 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);
- }
+ 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)
+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 = 0; i < DRM_MAX_MINOR; i++) {
- if ((fd = drmOpenMinor(i, 1, DRM_NODE_RENDER)) >= 0) {
- if ((version = drmGetVersion(fd))) {
- if (!strcmp(version->name, name)) {
- drmFreeVersion(version);
- id = drmGetBusid(fd);
- drmMsg("drmGetBusid returned '%s'\n", id ? id : "NULL");
- if (!id || !*id) {
- if (id)
- drmFreeBusid(id);
- return fd;
- } else {
- drmFreeBusid(id);
- }
- } else {
- drmFreeVersion(version);
- }
- }
- close(fd);
- }
+ 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);
- } else { /* No busid */
- return drmOpenDevice(strtol(devstring, NULL, 0),i, DRM_NODE_RENDER);
- }
- }
- }
- }
- }
+ 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
*
* \param name driver name. Not referenced if bus ID is supplied.
* \param busid bus ID. Zero if not known.
- *
+ *
* \return a file descriptor on success, or a negative value on error.
- *
+ *
* \internal
* It calls drmOpenByBusid() if \p busid is specified or drmOpenByName()
* otherwise.
*/
int drmOpen(const char *name, const char *busid)
{
- if (!drmAvailable() && name != NULL && drm_server_info) {
- /* try to load the kernel */
- if (!drm_server_info->load_module(name)) {
- drmMsg("[drm] failed to load kernel module \"%s\"\n", name);
- return -1;
- }
+ 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.
+ */
+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);
- if (fd >= 0)
- return fd;
+ int fd = drmOpenByBusid(busid, type);
+ if (fd >= 0)
+ return fd;
}
-
+
if (name)
- return drmOpenByName(name);
+ return drmOpenByName(name, type);
return -1;
}
return drmOpenMinor(minor, 0, DRM_NODE_CONTROL);
}
+int drmOpenRender(int minor)
+{
+ return drmOpenMinor(minor, 0, DRM_NODE_RENDER);
+}
+
/**
* Free the version information returned by drmGetVersion().
*
void drmFreeVersion(drmVersionPtr v)
{
if (!v)
- return;
+ return;
drmFree(v->name);
drmFree(v->date);
drmFree(v->desc);
static void drmFreeKernelVersion(drm_version_t *v)
{
if (!v)
- return;
+ return;
drmFree(v->name);
drmFree(v->date);
drmFree(v->desc);
/**
* 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.
* 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.
drmVersionPtr retval;
drm_version_t *version = drmMalloc(sizeof(*version));
- version->name_len = 0;
- version->name = NULL;
- version->date_len = 0;
- version->date = NULL;
- version->desc_len = 0;
- version->desc = NULL;
+ memclear(*version);
if (drmIoctl(fd, DRM_IOCTL_VERSION, version)) {
- drmFreeKernelVersion(version);
- return NULL;
+ drmFreeKernelVersion(version);
+ return NULL;
}
if (version->name_len)
- version->name = drmMalloc(version->name_len + 1);
+ version->name = drmMalloc(version->name_len + 1);
if (version->date_len)
- version->date = drmMalloc(version->date_len + 1);
+ version->date = drmMalloc(version->date_len + 1);
if (version->desc_len)
- version->desc = drmMalloc(version->desc_len + 1);
+ 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;
+ drmMsg("DRM_IOCTL_VERSION: %s\n", strerror(errno));
+ drmFreeKernelVersion(version);
+ return NULL;
}
/* The results might not be null-terminated strings, so terminate them. */
/**
* 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.
int drmGetCap(int fd, uint64_t capability, uint64_t *value)
{
- struct drm_get_cap cap = { capability, 0 };
- int ret;
+ struct drm_get_cap cap;
+ int ret;
- ret = drmIoctl(fd, DRM_IOCTL_GET_CAP, &cap);
- if (ret)
- return ret;
+ memclear(cap);
+ cap.capability = capability;
- *value = cap.value;
- return 0;
+ ret = drmIoctl(fd, DRM_IOCTL_GET_CAP, &cap);
+ if (ret)
+ return ret;
+
+ *value = cap.value;
+ return 0;
}
int drmSetClientCap(int fd, uint64_t capability, uint64_t value)
{
- struct drm_set_client_cap cap = { capability, value };
+ struct drm_set_client_cap cap;
- return drmIoctl(fd, DRM_IOCTL_SET_CLIENT_CAP, &cap);
+ memclear(cap);
+ cap.capability = capability;
+ cap.value = value;
+
+ return drmIoctl(fd, DRM_IOCTL_SET_CLIENT_CAP, &cap);
}
/**
{
drm_unique_t u;
- u.unique_len = 0;
- u.unique = NULL;
+ memclear(u);
if (drmIoctl(fd, DRM_IOCTL_GET_UNIQUE, &u))
- return NULL;
+ return NULL;
u.unique = drmMalloc(u.unique_len + 1);
- if (drmIoctl(fd, DRM_IOCTL_GET_UNIQUE, &u))
- return NULL;
+ if (drmIoctl(fd, DRM_IOCTL_GET_UNIQUE, &u)) {
+ drmFree(u.unique);
+ return NULL;
+ }
u.unique[u.unique_len] = '\0';
return u.unique;
{
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 -errno;
}
return 0;
}
{
drm_auth_t auth;
+ memclear(auth);
+
*magic = 0;
if (drmIoctl(fd, DRM_IOCTL_GET_MAGIC, &auth))
- return -errno;
+ return -errno;
*magic = auth.magic;
return 0;
}
{
drm_auth_t auth;
+ memclear(auth);
auth.magic = magic;
if (drmIoctl(fd, DRM_IOCTL_AUTH_MAGIC, &auth))
- return -errno;
+ return -errno;
return 0;
}
* \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
*
* \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.
+ * kernel, the frame buffer area will be set to write combining.
*
* \par Mapping the MMIO register area
* For the MMIO 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.
- *
+ * 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.
- *
+ * returned.
+ *
* \note May only be called by root.
*
* \internal
* the arguments in a drm_map structure.
*/
int drmAddMap(int fd, drm_handle_t offset, drmSize size, drmMapType type,
- drmMapFlags flags, drm_handle_t *handle)
+ drmMapFlags flags, drm_handle_t *handle)
{
drm_map_t map;
+ memclear(map);
map.offset = offset;
map.size = size;
- map.handle = 0;
map.type = type;
map.flags = flags;
if (drmIoctl(fd, DRM_IOCTL_ADD_MAP, &map))
- return -errno;
+ return -errno;
if (handle)
- *handle = (drm_handle_t)(uintptr_t)map.handle;
+ *handle = (drm_handle_t)(uintptr_t)map.handle;
return 0;
}
{
drm_map_t map;
+ memclear(map);
map.handle = (void *)(uintptr_t)handle;
if(drmIoctl(fd, DRM_IOCTL_RM_MAP, &map))
- return -errno;
+ 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
+ * \param agp_offset offset in the AGP aperture
*
* \return number of buffers allocated, negative on error.
*
* \sa drm_buf_desc.
*/
int drmAddBufs(int fd, int count, int size, drmBufDescFlags flags,
- int agp_offset)
+ int agp_offset)
{
drm_buf_desc_t request;
+ memclear(request);
request.count = count;
request.size = size;
- request.low_mark = 0;
- request.high_mark = 0;
request.flags = flags;
request.agp_start = agp_offset;
if (drmIoctl(fd, DRM_IOCTL_ADD_BUFS, &request))
- return -errno;
+ return -errno;
return request.count;
}
drm_buf_info_t info;
int i;
- info.count = 0;
- info.list = NULL;
+ memclear(info);
if (drmIoctl(fd, DRM_IOCTL_INFO_BUFS, &info))
- return -EINVAL;
+ return -EINVAL;
if (!info.count)
- return -EINVAL;
+ return -EINVAL;
if (!(info.list = drmMalloc(info.count * sizeof(*info.list))))
- return -ENOMEM;
+ return -ENOMEM;
if (drmIoctl(fd, DRM_IOCTL_INFO_BUFS, &info)) {
- int retval = -errno;
- drmFree(info.list);
- return retval;
+ 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;
- }
+ 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);
* \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_buf_free_t request;
+ memclear(request);
request.count = count;
request.list = list;
if (drmIoctl(fd, DRM_IOCTL_FREE_BUFS, &request))
- return -errno;
+ return -errno;
return 0;
}
* begins.
*
* \return zero on success, or a negative value on failure.
- *
+ *
* \internal
* This function is a wrapper for mmap().
*/
static unsigned long pagesize_mask = 0;
if (fd < 0)
- return -EINVAL;
+ return -EINVAL;
if (!pagesize_mask)
- pagesize_mask = getpagesize() - 1;
+ pagesize_mask = getpagesize() - 1;
size = (size + pagesize_mask) & ~pagesize_mask;
- *address = mmap(0, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, handle);
+ *address = drm_mmap(0, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, handle);
if (*address == MAP_FAILED)
- return -errno;
+ return -errno;
return 0;
}
*
* \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
*/
int drmUnmap(drmAddress address, drmSize size)
{
- return munmap(address, size);
+ return drm_munmap(address, size);
}
drmBufInfoPtr drmGetBufInfo(int fd)
drmBufInfoPtr retval;
int i;
- info.count = 0;
- info.list = NULL;
+ memclear(info);
if (drmIoctl(fd, DRM_IOCTL_INFO_BUFS, &info))
- return NULL;
+ 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;
+ 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;
}
*
* \note The client may not use these buffers until obtaining buffer indices
* with drmDMA().
- *
+ *
* \internal
* This function calls the DRM_IOCTL_MAP_BUFS ioctl and copies the returned
* information about the buffers in a drm_buf_map structure into the
* client-visible data structures.
- */
+ */
drmBufMapPtr drmMapBufs(int fd)
{
drm_buf_map_t bufs;
drmBufMapPtr retval;
int i;
- bufs.count = 0;
- bufs.list = NULL;
- bufs.virtual = NULL;
+ memclear(bufs);
if (drmIoctl(fd, DRM_IOCTL_MAP_BUFS, &bufs))
- return NULL;
+ return NULL;
if (!bufs.count)
- return NULL;
+ return NULL;
- if (!(bufs.list = drmMalloc(bufs.count * sizeof(*bufs.list))))
- 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;
- }
+ 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;
- }
+ 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;
+ drmFree(bufs.list);
+ return retval;
}
int i;
for (i = 0; i < bufs->count; i++) {
- munmap(bufs->list[i].address, bufs->list[i].total);
+ drm_munmap(bufs->list[i].address, bufs->list[i].total);
}
drmFree(bufs->list);
drmFree(bufs);
-
return 0;
}
-#define DRM_DMA_RETRY 16
+#define DRM_DMA_RETRY 16
/**
* Reserve DMA buffers.
*
* \param fd file descriptor.
- * \param request
- *
+ * \param request
+ *
* \return zero on success, or a negative value on failure.
*
* \internal
dma.granted_count = 0;
do {
- ret = ioctl( fd, DRM_IOCTL_DMA, &dma );
+ 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;
+ request->granted_count = dma.granted_count;
+ return 0;
} else {
- return -errno;
+ return -errno;
}
}
* \param context context.
* \param flags flags that determine the sate of the hardware when the function
* returns.
- *
+ *
* \return always zero.
- *
+ *
* \internal
* This function translates the arguments into a drm_lock structure and issue
* the DRM_IOCTL_LOCK ioctl until the lock is successfully acquired.
{
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_HALT_CUR_QUEUES) lock.flags |= _DRM_HALT_CUR_QUEUES;
while (drmIoctl(fd, DRM_IOCTL_LOCK, &lock))
- ;
+ ;
return 0;
}
*
* \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_lock_t lock;
+ memclear(lock);
lock.context = context;
- lock.flags = 0;
return drmIoctl(fd, DRM_IOCTL_UNLOCK, &lock);
}
drm_context_t * retval;
int i;
- res.count = 0;
- res.contexts = NULL;
+ memclear(res);
if (drmIoctl(fd, DRM_IOCTL_RES_CTX, &res))
- return NULL;
+ return NULL;
if (!res.count)
- return NULL;
+ return NULL;
if (!(list = drmMalloc(res.count * sizeof(*list))))
- return NULL;
- if (!(retval = drmMalloc(res.count * sizeof(*retval)))) {
- drmFree(list);
- return NULL;
- }
+ return NULL;
+ if (!(retval = drmMalloc(res.count * sizeof(*retval))))
+ goto err_free_list;
res.contexts = list;
if (drmIoctl(fd, DRM_IOCTL_RES_CTX, &res))
- return NULL;
+ goto err_free_context;
for (i = 0; i < res.count; i++)
- retval[i] = list[i].handle;
+ retval[i] = list[i].handle;
drmFree(list);
*count = res.count;
return retval;
+
+err_free_list:
+ drmFree(list);
+err_free_context:
+ drmFree(retval);
+ return NULL;
}
void drmFreeReservedContextList(drm_context_t *pt)
* \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_ctx_t ctx;
- ctx.flags = 0; /* Modified with functions below */
+ memclear(ctx);
if (drmIoctl(fd, DRM_IOCTL_ADD_CTX, &ctx))
- return -errno;
+ return -errno;
*handle = ctx.handle;
return 0;
}
{
drm_ctx_t ctx;
+ memclear(ctx);
ctx.handle = context;
if (drmIoctl(fd, DRM_IOCTL_SWITCH_CTX, &ctx))
- return -errno;
+ return -errno;
return 0;
}
* 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;
- ctx.flags = 0;
if (flags & DRM_CONTEXT_PRESERVED)
- ctx.flags |= _DRM_CONTEXT_PRESERVED;
+ ctx.flags |= _DRM_CONTEXT_PRESERVED;
if (flags & DRM_CONTEXT_2DONLY)
- ctx.flags |= _DRM_CONTEXT_2DONLY;
+ ctx.flags |= _DRM_CONTEXT_2DONLY;
if (drmIoctl(fd, DRM_IOCTL_MOD_CTX, &ctx))
- return -errno;
+ return -errno;
return 0;
}
{
drm_ctx_t ctx;
+ memclear(ctx);
ctx.handle = context;
if (drmIoctl(fd, DRM_IOCTL_GET_CTX, &ctx))
- return -errno;
+ return -errno;
*flags = 0;
if (ctx.flags & _DRM_CONTEXT_PRESERVED)
- *flags |= DRM_CONTEXT_PRESERVED;
+ *flags |= DRM_CONTEXT_PRESERVED;
if (ctx.flags & _DRM_CONTEXT_2DONLY)
- *flags |= DRM_CONTEXT_2DONLY;
+ *flags |= DRM_CONTEXT_2DONLY;
return 0;
}
*
* Free any kernel-level resources allocated with drmCreateContext() associated
* with the context.
- *
+ *
* \param fd file descriptor.
* \param handle handle given by drmCreateContext().
- *
+ *
* \return zero on success, or a negative value on failure.
- *
+ *
* \note May only be called by root.
- *
+ *
* \internal
* This function is a wrapper around the DRM_IOCTL_RM_CTX ioctl, passing the
* argument in a drm_ctx structure.
int drmDestroyContext(int fd, drm_context_t handle)
{
drm_ctx_t ctx;
+
+ memclear(ctx);
ctx.handle = handle;
if (drmIoctl(fd, DRM_IOCTL_RM_CTX, &ctx))
- return -errno;
+ return -errno;
return 0;
}
int drmCreateDrawable(int fd, drm_drawable_t *handle)
{
drm_draw_t draw;
+
+ memclear(draw);
if (drmIoctl(fd, DRM_IOCTL_ADD_DRAW, &draw))
- return -errno;
+ return -errno;
*handle = draw.handle;
return 0;
}
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 -errno;
return 0;
}
int drmUpdateDrawableInfo(int fd, drm_drawable_t handle,
- drm_drawable_info_type_t type, unsigned int num,
- void *data)
+ 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 -errno;
return 0;
}
* Must be called before any of the other AGP related calls.
*
* \param fd file descriptor.
- *
+ *
* \return zero on success, or a negative value on failure.
- *
+ *
* \internal
* This function is a wrapper around the DRM_IOCTL_AGP_ACQUIRE ioctl.
*/
int drmAgpAcquire(int fd)
{
if (drmIoctl(fd, DRM_IOCTL_AGP_ACQUIRE, NULL))
- return -errno;
+ return -errno;
return 0;
}
* Release the AGP device.
*
* \param fd file descriptor.
- *
+ *
* \return zero on success, or a negative value on failure.
- *
+ *
* \internal
* This function is a wrapper around the DRM_IOCTL_AGP_RELEASE ioctl.
*/
int drmAgpRelease(int fd)
{
if (drmIoctl(fd, DRM_IOCTL_AGP_RELEASE, NULL))
- return -errno;
+ return -errno;
return 0;
}
*
* \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_agp_mode_t m;
+ memclear(m);
m.mode = mode;
if (drmIoctl(fd, DRM_IOCTL_AGP_ENABLE, &m))
- return -errno;
+ return -errno;
return 0;
}
* \param address if not zero, will be set to the physical address of the
* allocated memory.
* \param handle on success will be set to a handle of the allocated memory.
- *
+ *
* \return zero on success, or a negative value on failure.
- *
+ *
* \internal
* This function is a wrapper around the DRM_IOCTL_AGP_ALLOC ioctl, passing the
* arguments in a drm_agp_buffer structure.
*/
int drmAgpAlloc(int fd, unsigned long size, unsigned long type,
- unsigned long *address, drm_handle_t *handle)
+ unsigned long *address, drm_handle_t *handle)
{
drm_agp_buffer_t b;
+ memclear(b);
*handle = DRM_AGP_NO_HANDLE;
b.size = size;
- b.handle = 0;
b.type = type;
if (drmIoctl(fd, DRM_IOCTL_AGP_ALLOC, &b))
- return -errno;
+ return -errno;
if (address != 0UL)
- *address = b.physical;
+ *address = b.physical;
*handle = b.handle;
return 0;
}
*
* \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_agp_buffer_t b;
- b.size = 0;
+ memclear(b);
b.handle = handle;
if (drmIoctl(fd, DRM_IOCTL_AGP_FREE, &b))
- return -errno;
+ return -errno;
return 0;
}
* \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_agp_binding_t b;
+ memclear(b);
b.handle = handle;
b.offset = offset;
if (drmIoctl(fd, DRM_IOCTL_AGP_BIND, &b))
- return -errno;
+ return -errno;
return 0;
}
*
* \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_agp_binding_t b;
+ memclear(b);
b.handle = handle;
- b.offset = 0;
if (drmIoctl(fd, DRM_IOCTL_AGP_UNBIND, &b))
- return -errno;
+ 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_agp_info_t i;
+ memclear(i);
+
if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
- return -errno;
+ 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_agp_info_t i;
+ memclear(i);
+
if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
- return -errno;
+ 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_agp_info_t i;
+ memclear(i);
+
if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
- return 0;
+ 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_agp_info_t i;
+ memclear(i);
+
if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
- return 0;
+ 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_agp_info_t i;
+ memclear(i);
+
if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
- return 0;
+ 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_agp_info_t i;
+ memclear(i);
+
if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
- return 0;
+ 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_agp_info_t i;
+ memclear(i);
+
if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
- return 0;
+ 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_agp_info_t i;
+ memclear(i);
+
if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
- return 0;
+ 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_agp_info_t i;
+ memclear(i);
+
if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i))
- return 0;
+ return 0;
return i.id_device;
}
{
drm_scatter_gather_t sg;
+ memclear(sg);
+
*handle = 0;
sg.size = size;
- sg.handle = 0;
if (drmIoctl(fd, DRM_IOCTL_SG_ALLOC, &sg))
- return -errno;
+ return -errno;
*handle = sg.handle;
return 0;
}
{
drm_scatter_gather_t sg;
- sg.size = 0;
+ memclear(sg);
sg.handle = handle;
if (drmIoctl(fd, DRM_IOCTL_SG_FREE, &sg))
- return -errno;
+ return -errno;
return 0;
}
*
* \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.
*/
ret = clock_gettime(CLOCK_MONOTONIC, &timeout);
if (ret < 0) {
- fprintf(stderr, "clock_gettime failed: %s\n", strerror(errno));
- goto out;
+ fprintf(stderr, "clock_gettime failed: %s\n", strerror(errno));
+ goto out;
}
timeout.tv_sec++;
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;
- }
+ 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);
{
switch (err) {
case DRM_ERR_NO_DEVICE:
- fprintf(stderr, "%s: no device\n", label);
- break;
+ fprintf(stderr, "%s: no device\n", label);
+ break;
case DRM_ERR_NO_ACCESS:
- fprintf(stderr, "%s: no access\n", label);
- break;
+ fprintf(stderr, "%s: no access\n", label);
+ break;
case DRM_ERR_NOT_ROOT:
- fprintf(stderr, "%s: not root\n", label);
- break;
+ fprintf(stderr, "%s: not root\n", label);
+ break;
case DRM_ERR_INVALID:
- fprintf(stderr, "%s: invalid args\n", label);
- break;
+ 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;
+ if (err < 0)
+ err = -err;
+ fprintf( stderr, "%s: error %d (%s)\n", label, err, strerror(err) );
+ break;
}
return 1;
*
* \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_control_t ctl;
+ memclear(ctl);
ctl.func = DRM_INST_HANDLER;
ctl.irq = irq;
if (drmIoctl(fd, DRM_IOCTL_CONTROL, &ctl))
- return -errno;
+ 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_control_t ctl;
+ memclear(ctl);
ctl.func = DRM_UNINST_HANDLER;
ctl.irq = 0;
if (drmIoctl(fd, DRM_IOCTL_CONTROL, &ctl))
- return -errno;
+ return -errno;
return 0;
}
{
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_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 -errno;
return 0;
}
* \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_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 -errno;
return p.irq;
}
drmHashEntry *entry = drmGetEntry(fd);
if (drmHashInsert(entry->tagTable, context, tag)) {
- drmHashDelete(entry->tagTable, context);
- drmHashInsert(entry->tagTable, context, tag);
+ drmHashDelete(entry->tagTable, context);
+ drmHashInsert(entry->tagTable, context, tag);
}
return 0;
}
void *value;
if (drmHashLookup(entry->tagTable, context, &value))
- return NULL;
+ return NULL;
return value;
}
{
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 -errno;
return 0;
}
{
drm_ctx_priv_map_t map;
+ memclear(map);
map.ctx_id = ctx_id;
if (drmIoctl(fd, DRM_IOCTL_GET_SAREA_CTX, &map))
- return -errno;
+ return -errno;
if (handle)
- *handle = (drm_handle_t)(uintptr_t)map.handle;
+ *handle = (drm_handle_t)(uintptr_t)map.handle;
return 0;
}
int drmGetMap(int fd, int idx, drm_handle_t *offset, drmSize *size,
- drmMapType *type, drmMapFlags *flags, drm_handle_t *handle,
- int *mtrr)
+ 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;
+ return -errno;
*offset = map.offset;
*size = map.size;
*type = map.type;
}
int drmGetClient(int fd, int idx, int *auth, int *pid, int *uid,
- unsigned long *magic, unsigned long *iocs)
+ 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;
+ return -errno;
*auth = client.auth;
*pid = client.pid;
*uid = client.uid;
int drmGetStats(int fd, drmStatsT *stats)
{
drm_stats_t s;
- int i;
+ unsigned i;
+ memclear(s);
if (drmIoctl(fd, DRM_IOCTL_GET_STATS, &s))
- return -errno;
+ return -errno;
stats->count = 0;
memset(stats, 0, sizeof(*stats));
if (s.count > sizeof(stats->data)/sizeof(stats->data[0]))
- return -1;
+ return -1;
#define SET_VALUE \
stats->data[i].long_format = "%-20.20s"; \
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;
- }
+ 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 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
+ * It issues a read-write ioctl given by
* \code DRM_COMMAND_BASE + drmCommandIndex \endcode.
*/
int drmSetInterfaceVersion(int fd, drmSetVersion *version)
int retcode = 0;
drm_set_version_t sv;
+ 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;
+ retcode = -errno;
}
version->drm_di_major = sv.drm_di_major;
* Send a device-specific command.
*
* \param fd file descriptor.
- * \param drmCommandIndex command index
- *
+ * \param drmCommandIndex command index
+ *
* \return zero on success, or a negative value on failure.
- *
+ *
* \internal
- * It issues a ioctl given by
+ * It issues a ioctl given by
* \code DRM_COMMAND_BASE + drmCommandIndex \endcode.
*/
int drmCommandNone(int fd, unsigned long drmCommandIndex)
{
- void *data = NULL; /* dummy */
unsigned long request;
request = DRM_IO( DRM_COMMAND_BASE + drmCommandIndex);
- if (drmIoctl(fd, request, data)) {
- return -errno;
+ if (drmIoctl(fd, request, NULL)) {
+ return -errno;
}
return 0;
}
* Send a device-specific read command.
*
* \param fd file descriptor.
- * \param drmCommandIndex command index
+ * \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
+ * It issues a read ioctl given by
* \code DRM_COMMAND_BASE + drmCommandIndex \endcode.
*/
int drmCommandRead(int fd, unsigned long drmCommandIndex, void *data,
{
unsigned long request;
- request = DRM_IOC( DRM_IOC_READ, DRM_IOCTL_BASE,
- DRM_COMMAND_BASE + drmCommandIndex, size);
+ request = DRM_IOC( DRM_IOC_READ, DRM_IOCTL_BASE,
+ DRM_COMMAND_BASE + drmCommandIndex, size);
if (drmIoctl(fd, request, data)) {
- return -errno;
+ return -errno;
}
return 0;
}
* Send a device-specific write command.
*
* \param fd file descriptor.
- * \param drmCommandIndex command index
+ * \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
+ * It issues a write ioctl given by
* \code DRM_COMMAND_BASE + drmCommandIndex \endcode.
*/
int drmCommandWrite(int fd, unsigned long drmCommandIndex, void *data,
{
unsigned long request;
- request = DRM_IOC( DRM_IOC_WRITE, DRM_IOCTL_BASE,
- DRM_COMMAND_BASE + drmCommandIndex, size);
+ request = DRM_IOC( DRM_IOC_WRITE, DRM_IOCTL_BASE,
+ DRM_COMMAND_BASE + drmCommandIndex, size);
if (drmIoctl(fd, request, data)) {
- return -errno;
+ return -errno;
}
return 0;
}
* Send a device-specific read-write command.
*
* \param fd file descriptor.
- * \param drmCommandIndex command index
+ * \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
+ * It issues a read-write ioctl given by
* \code DRM_COMMAND_BASE + drmCommandIndex \endcode.
*/
int drmCommandWriteRead(int fd, unsigned long drmCommandIndex, void *data,
{
unsigned long request;
- request = DRM_IOC( DRM_IOC_READ|DRM_IOC_WRITE, DRM_IOCTL_BASE,
- DRM_COMMAND_BASE + drmCommandIndex, size);
+ 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 -errno;
return 0;
}
char *BusID;
int fd;
int refcount;
+ int type;
} connection[DRM_MAX_FDS];
static int nr_fds = 0;
-int drmOpenOnce(void *unused,
- const char *BusID,
- int *newlyopened)
+int drmOpenOnce(void *unused,
+ const char *BusID,
+ int *newlyopened)
+{
+ return drmOpenOnceWithType(BusID, newlyopened, DRM_NODE_PRIMARY);
+}
+
+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].refcount++;
- *newlyopened = 0;
- return connection[i].fd;
- }
-
- fd = drmOpen(unused, BusID);
- if (fd <= 0 || nr_fds == DRM_MAX_FDS)
- return fd;
-
+ 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));
+ fprintf(stderr, "saved connection %d for %s %d\n",
+ nr_fds, connection[nr_fds].BusID,
+ strcmp(BusID, connection[nr_fds].BusID));
nr_fds++;
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;
- }
- }
+ if (fd == connection[i].fd) {
+ if (--connection[i].refcount == 0) {
+ drmClose(connection[i].fd);
+ free(connection[i].BusID);
+
+ if (i < --nr_fds)
+ connection[i] = connection[nr_fds];
+
+ return;
+ }
+ }
}
}
int drmSetMaster(int fd)
{
- return ioctl(fd, DRM_IOCTL_SET_MASTER, 0);
+ return drmIoctl(fd, DRM_IOCTL_SET_MASTER, NULL);
}
int drmDropMaster(int fd)
{
- return ioctl(fd, DRM_IOCTL_DROP_MASTER, 0);
+ return drmIoctl(fd, DRM_IOCTL_DROP_MASTER, NULL);
}
char *drmGetDeviceNameFromFd(int fd)
{
- char name[128];
- struct stat sbuf;
- dev_t d;
- int i;
+ 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);
+}
+
+int drmGetNodeTypeFromFd(int fd)
+{
+ struct stat sbuf;
+ int maj, min, type;
- /* 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. */
+ if (fstat(fd, &sbuf))
+ return -1;
- fstat(fd, &sbuf);
- d = sbuf.st_rdev;
+ maj = major(sbuf.st_rdev);
+ min = minor(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;
+ if (maj != DRM_MAJOR || !S_ISCHR(sbuf.st_mode)) {
+ errno = EINVAL;
+ return -1;
+ }
- return strdup(name);
+ type = drmGetMinorType(min);
+ if (type == -1)
+ errno = ENODEV;
+ return type;
}
int drmPrimeHandleToFD(int fd, uint32_t handle, uint32_t flags, int *prime_fd)
{
- struct drm_prime_handle args;
- int ret;
+ struct drm_prime_handle args;
+ int ret;
- args.handle = handle;
- args.flags = flags;
- ret = drmIoctl(fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &args);
- if (ret)
- return 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;
+ *prime_fd = args.fd;
+ return 0;
}
int drmPrimeFDToHandle(int fd, int prime_fd, uint32_t *handle)
{
- struct drm_prime_handle args;
- int ret;
+ 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 *pent, *ent;
+ struct stat sbuf;
+ const char *name = drmGetMinorName(type);
+ int len;
+ char dev_name[64], buf[64];
+ long name_max;
+ 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 (maj != DRM_MAJOR || !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;
- args.fd = prime_fd;
- args.flags = 0;
- ret = drmIoctl(fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &args);
- if (ret)
- return ret;
+ name_max = fpathconf(dirfd(sysdir), _PC_NAME_MAX);
+ if (name_max == -1)
+ goto out_close_dir;
- *handle = args.handle;
- return 0;
+ pent = malloc(offsetof(struct dirent, d_name) + name_max + 1);
+ if (pent == NULL)
+ goto out_close_dir;
+
+ while (readdir_r(sysdir, pent, &ent) == 0 && ent != NULL) {
+ if (strncmp(ent->d_name, name, len) == 0) {
+ snprintf(dev_name, sizeof(dev_name), DRM_DIR_NAME "/%s",
+ ent->d_name);
+
+ free(pent);
+ closedir(sysdir);
+
+ return strdup(dev_name);
+ }
+ }
+
+ free(pent);
+
+out_close_dir:
+ closedir(sysdir);
+#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 (maj != DRM_MAJOR || !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
+ return NULL;
+}
+
+char *drmGetPrimaryDeviceNameFromFd(int fd)
+{
+ return drmGetMinorNameForFD(fd, DRM_NODE_PRIMARY);
}
+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
+
+static int drmParseSubsystemType(int maj, int min)
+{
+#ifdef __linux__
+ char path[PATH_MAX + 1];
+ char link[PATH_MAX + 1] = "";
+ char *name;
+
+ 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;
+
+ if (strncmp(name, "/pci", 4) == 0)
+ return DRM_BUS_PCI;
+
+ if (strncmp(name, "/usb", 4) == 0)
+ return DRM_BUS_USB;
+
+ if (strncmp(name, "/platform", 9) == 0)
+ return DRM_BUS_PLATFORM;
+
+ if (strncmp(name, "/host1x", 7) == 0)
+ return DRM_BUS_HOST1X;
+
+ return -EINVAL;
+#elif defined(__OpenBSD__)
+ return DRM_BUS_PCI;
+#else
+#warning "Missing implementation of drmParseSubsystemType"
+ return -EINVAL;
+#endif
+}
+
+static int drmParsePciBusInfo(int maj, int min, drmPciBusInfoPtr info)
+{
+#ifdef __linux__
+ unsigned int domain, bus, dev, func;
+ char path[PATH_MAX + 1], *value;
+ int num;
+
+ snprintf(path, sizeof(path), "/sys/dev/char/%d:%d/device", maj, min);
+
+ value = sysfs_uevent_get(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__)
+ 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
+}
+
+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_PRIMARY_MINOR_NAME,
+ sizeof(DRM_PRIMARY_MINOR_NAME) - 1) == 0)
+ return DRM_NODE_PRIMARY;
+
+ 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;
+
+ 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)
+{
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
+ 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];
+ unsigned int data[ARRAY_SIZE(attrs)];
+ FILE *fp;
+ int ret;
+
+ for (unsigned i = ignore_revision ? 1 : 0; i < ARRAY_SIZE(attrs); i++) {
+ snprintf(path, PATH_MAX, "/sys/dev/char/%d:%d/device/%s", maj, min,
+ 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];
+ unsigned char config[64];
+ int fd, ret;
+
+ snprintf(path, PATH_MAX, "/sys/dev/char/%d:%d/device/config", maj, min);
+ 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__)
+ 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);
+ }
+ }
+}
+
+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;
+}
+
+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 drmParsePlatformBusInfo(int maj, int min, drmPlatformBusInfoPtr info)
+{
+#ifdef __linux__
+ char path[PATH_MAX + 1], *name;
+
+ snprintf(path, sizeof(path), "/sys/dev/char/%d:%d/device", maj, min);
+
+ name = sysfs_uevent_get(path, "OF_FULLNAME");
+ if (!name)
+ return -ENOENT;
+
+ strncpy(info->fullname, name, DRM_PLATFORM_DEVICE_NAME_LEN);
+ info->fullname[DRM_PLATFORM_DEVICE_NAME_LEN - 1] = '\0';
+ free(name);
+
+ return 0;
+#else
+#warning "Missing implementation of drmParsePlatformBusInfo"
+ return -EINVAL;
+#endif
+}
+
+static int drmParsePlatformDeviceInfo(int maj, int min,
+ drmPlatformDeviceInfoPtr info)
+{
+#ifdef __linux__
+ char path[PATH_MAX + 1], *value;
+ 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)
+ return -ENOENT;
+
+ sscanf(value, "%u", &count);
+ free(value);
+
+ info->compatible = calloc(count + 1, sizeof(*info->compatible));
+ if (!info->compatible)
+ return -ENOMEM;
+
+ for (i = 0; i < count; i++) {
+ value = sysfs_uevent_get(path, "OF_COMPATIBLE_%u", i);
+ if (!value) {
+ err = -ENOENT;
+ goto free;
+ }
+
+ info->compatible[i] = value;
+ }
+
+ return 0;
+
+free:
+ while (i--)
+ free(info->compatible[i]);
+
+ free(info->compatible);
+ return err;
+#else
+#warning "Missing implementation of drmParsePlatformDeviceInfo"
+ 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 = drmParsePlatformBusInfo(maj, min, dev->businfo.platform);
+ if (ret < 0)
+ goto free_device;
+
+ if (fetch_deviceinfo) {
+ ptr += sizeof(drmPlatformBusInfo);
+ dev->deviceinfo.platform = (drmPlatformDeviceInfoPtr)ptr;
+
+ ret = drmParsePlatformDeviceInfo(maj, min, dev->deviceinfo.platform);
+ if (ret < 0)
+ goto free_device;
+ }
+
+ *device = dev;
+
+ return 0;
+
+free_device:
+ free(dev);
+ return ret;
+}
+
+static int drmParseHost1xBusInfo(int maj, int min, drmHost1xBusInfoPtr info)
+{
+#ifdef __linux__
+ char path[PATH_MAX + 1], *name;
+
+ snprintf(path, sizeof(path), "/sys/dev/char/%d:%d/device", maj, min);
+
+ name = sysfs_uevent_get(path, "OF_FULLNAME");
+ if (!name)
+ return -ENOENT;
+
+ strncpy(info->fullname, name, DRM_HOST1X_DEVICE_NAME_LEN);
+ info->fullname[DRM_HOST1X_DEVICE_NAME_LEN - 1] = '\0';
+ free(name);
+
+ return 0;
+#else
+#warning "Missing implementation of drmParseHost1xBusInfo"
+ return -EINVAL;
+#endif
+}
+
+static int drmParseHost1xDeviceInfo(int maj, int min,
+ drmHost1xDeviceInfoPtr info)
+{
+#ifdef __linux__
+ char path[PATH_MAX + 1], *value;
+ 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)
+ return -ENOENT;
+
+ sscanf(value, "%u", &count);
+ free(value);
+
+ info->compatible = calloc(count + 1, sizeof(*info->compatible));
+ if (!info->compatible)
+ return -ENOMEM;
+
+ for (i = 0; i < count; i++) {
+ value = sysfs_uevent_get(path, "OF_COMPATIBLE_%u", i);
+ if (!value) {
+ err = -ENOENT;
+ goto free;
+ }
+
+ info->compatible[i] = value;
+ }
+
+ return 0;
+
+free:
+ while (i--)
+ free(info->compatible[i]);
+
+ free(info->compatible);
+ return err;
+#else
+#warning "Missing implementation of drmParseHost1xDeviceInfo"
+ return -EINVAL;
+#endif
+}
+
+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 = drmParseHost1xBusInfo(maj, min, dev->businfo.host1x);
+ if (ret < 0)
+ goto free_device;
+
+ if (fetch_deviceinfo) {
+ ptr += sizeof(drmHost1xBusInfo);
+ dev->deviceinfo.host1x = (drmHost1xDeviceInfoPtr)ptr;
+
+ ret = drmParseHost1xDeviceInfo(maj, min, dev->deviceinfo.host1x);
+ if (ret < 0)
+ goto free_device;
+ }
+
+ *device = dev;
+
+ return 0;
+
+free_device:
+ free(dev);
+ return ret;
+}
+
+/* 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 (drmCompareDevices(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);
+}
+
+/**
+ * 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.
+ */
+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 (maj != DRM_MAJOR || !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;
+ drmDevicePtr d;
+ DIR *sysdir;
+ struct dirent *dent;
+ struct stat sbuf;
+ char node[PATH_MAX + 1];
+ int node_type, subsystem_type;
+ int maj, min;
+ int ret, i, node_count;
+ int max_count = 16;
+ 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 (maj != DRM_MAJOR || !S_ISCHR(sbuf.st_mode))
+ return -EINVAL;
+
+ subsystem_type = drmParseSubsystemType(maj, min);
+
+ local_devices = calloc(max_count, sizeof(drmDevicePtr));
+ if (local_devices == NULL)
+ return -ENOMEM;
+
+ sysdir = opendir(DRM_DIR_NAME);
+ if (!sysdir) {
+ ret = -errno;
+ goto free_locals;
+ }
+
+ i = 0;
+ while ((dent = readdir(sysdir))) {
+ node_type = drmGetNodeType(dent->d_name);
+ if (node_type < 0)
+ continue;
+
+ snprintf(node, PATH_MAX, "%s/%s", DRM_DIR_NAME, dent->d_name);
+ if (stat(node, &sbuf))
+ continue;
+
+ maj = major(sbuf.st_rdev);
+ min = minor(sbuf.st_rdev);
+
+ if (maj != DRM_MAJOR || !S_ISCHR(sbuf.st_mode))
+ continue;
+
+ if (drmParseSubsystemType(maj, min) != subsystem_type)
+ continue;
+
+ switch (subsystem_type) {
+ case DRM_BUS_PCI:
+ ret = drmProcessPciDevice(&d, node, node_type, maj, min, true, flags);
+ if (ret)
+ continue;
+
+ break;
+
+ case DRM_BUS_USB:
+ ret = drmProcessUsbDevice(&d, node, node_type, maj, min, true, flags);
+ if (ret)
+ continue;
+
+ break;
+
+ case DRM_BUS_PLATFORM:
+ ret = drmProcessPlatformDevice(&d, node, node_type, maj, min, true, flags);
+ if (ret)
+ continue;
+
+ break;
+
+ case DRM_BUS_HOST1X:
+ ret = drmProcessHost1xDevice(&d, node, node_type, maj, min, true, flags);
+ if (ret)
+ continue;
+
+ break;
+
+ default:
+ continue;
+ }
+
+ if (i >= max_count) {
+ drmDevicePtr *temp;
+
+ max_count += 16;
+ temp = realloc(local_devices, max_count * sizeof(drmDevicePtr));
+ if (!temp)
+ goto free_devices;
+ local_devices = temp;
+ }
+
+ /* store target at local_devices[0] for ease to use below */
+ if (find_rdev == sbuf.st_rdev && i) {
+ local_devices[i] = local_devices[0];
+ local_devices[0] = d;
+ }
+ else
+ local_devices[i] = d;
+ i++;
+ }
+ node_count = i;
+
+ drmFoldDuplicatedDevices(local_devices, node_count);
+
+ *device = local_devices[0];
+ drmFreeDevices(&local_devices[1], node_count - 1);
+
+ closedir(sysdir);
+ free(local_devices);
+ if (*device == NULL)
+ return -ENODEV;
+ return 0;
+
+free_devices:
+ drmFreeDevices(local_devices, i);
+ closedir(sysdir);
+
+free_locals:
+ free(local_devices);
+ return ret;
+#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.
+ */
+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.
+ */
+int drmGetDevices2(uint32_t flags, drmDevicePtr devices[], int max_devices)
+{
+ drmDevicePtr *local_devices;
+ drmDevicePtr device;
+ DIR *sysdir;
+ struct dirent *dent;
+ struct stat sbuf;
+ char node[PATH_MAX + 1];
+ int node_type, subsystem_type;
+ int maj, min;
+ int ret, i, node_count, device_count;
+ int max_count = 16;
+
+ if (drm_device_validate_flags(flags))
+ return -EINVAL;
+
+ local_devices = calloc(max_count, sizeof(drmDevicePtr));
+ if (local_devices == NULL)
+ return -ENOMEM;
+
+ sysdir = opendir(DRM_DIR_NAME);
+ if (!sysdir) {
+ ret = -errno;
+ goto free_locals;
+ }
+
+ i = 0;
+ while ((dent = readdir(sysdir))) {
+ node_type = drmGetNodeType(dent->d_name);
+ if (node_type < 0)
+ continue;
+
+ snprintf(node, PATH_MAX, "%s/%s", DRM_DIR_NAME, dent->d_name);
+ if (stat(node, &sbuf))
+ continue;
+
+ maj = major(sbuf.st_rdev);
+ min = minor(sbuf.st_rdev);
+
+ if (maj != DRM_MAJOR || !S_ISCHR(sbuf.st_mode))
+ continue;
+
+ subsystem_type = drmParseSubsystemType(maj, min);
+
+ if (subsystem_type < 0)
+ continue;
+
+ switch (subsystem_type) {
+ case DRM_BUS_PCI:
+ ret = drmProcessPciDevice(&device, node, node_type,
+ maj, min, devices != NULL, flags);
+ if (ret)
+ continue;
+
+ break;
+
+ case DRM_BUS_USB:
+ ret = drmProcessUsbDevice(&device, node, node_type, maj, min,
+ devices != NULL, flags);
+ if (ret)
+ goto free_devices;
+
+ break;
+
+ case DRM_BUS_PLATFORM:
+ ret = drmProcessPlatformDevice(&device, node, node_type, maj, min,
+ devices != NULL, flags);
+ if (ret)
+ goto free_devices;
+
+ break;
+
+ case DRM_BUS_HOST1X:
+ ret = drmProcessHost1xDevice(&device, node, node_type, maj, min,
+ devices != NULL, flags);
+ if (ret)
+ goto free_devices;
+
+ break;
+
+ default:
+ continue;
+ }
+
+ if (i >= max_count) {
+ drmDevicePtr *temp;
+
+ max_count += 16;
+ temp = realloc(local_devices, max_count * sizeof(drmDevicePtr));
+ if (!temp)
+ goto free_devices;
+ local_devices = temp;
+ }
+
+ 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);
+ free(local_devices);
+ return device_count;
+
+free_devices:
+ drmFreeDevices(local_devices, i);
+ closedir(sysdir);
+
+free_locals:
+ free(local_devices);
+ return ret;
+}
+
+/**
+ * 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.
+ */
+int drmGetDevices(drmDevicePtr devices[], int max_devices)
+{
+ return drmGetDevices2(DRM_DEVICE_GET_PCI_REVISION, devices, max_devices);
+}
+
+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 (maj != DRM_MAJOR || !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 (maj != DRM_MAJOR || !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
+}
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