| /** |
| * \file xf86drm.c |
| * User-level interface to DRM device |
| * |
| * \author Rickard E. (Rik) Faith <faith@valinux.com> |
| * \author Kevin E. Martin <martin@valinux.com> |
| */ |
| |
| /* |
| * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. |
| * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| # include <config.h> |
| #endif |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <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/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 |
| #define MAP_FAILED ((void *)-1) |
| #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 |
| #endif |
| |
| #ifdef __NetBSD__ |
| #define DRM_MAJOR 34 |
| #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 */ |
| #endif |
| |
| #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 memclear(s) memset(&s, 0, sizeof(s)) |
| |
| static drmServerInfoPtr drm_server_info; |
| |
| void drmSetServerInfo(drmServerInfoPtr info) |
| { |
| drm_server_info = info; |
| } |
| |
| /** |
| * Output a message to stderr. |
| * |
| * \param format printf() like format string. |
| * |
| * \internal |
| * This function is a wrapper around vfprintf(). |
| */ |
| |
| static int DRM_PRINTFLIKE(1, 0) |
| drmDebugPrint(const char *format, va_list ap) |
| { |
| return vfprintf(stderr, format, ap); |
| } |
| |
| void |
| drmMsg(const char *format, ...) |
| { |
| va_list ap; |
| const char *env; |
| 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 { |
| drmDebugPrint(format, ap); |
| } |
| va_end(ap); |
| } |
| } |
| |
| static void *drmHashTable = NULL; /* Context switch callbacks */ |
| |
| void *drmGetHashTable(void) |
| { |
| return drmHashTable; |
| } |
| |
| void *drmMalloc(int size) |
| { |
| return calloc(1, size); |
| } |
| |
| void drmFree(void *pt) |
| { |
| free(pt); |
| } |
| |
| /** |
| * Call ioctl, restarting if it is interupted |
| */ |
| int |
| drmIoctl(int fd, unsigned long request, void *arg) |
| { |
| int ret; |
| |
| do { |
| ret = ioctl(fd, request, arg); |
| } while (ret == -1 && (errno == EINTR || errno == EAGAIN)); |
| return ret; |
| } |
| |
| static unsigned long drmGetKeyFromFd(int fd) |
| { |
| stat_t st; |
| |
| st.st_rdev = 0; |
| fstat(fd, &st); |
| return st.st_rdev; |
| } |
| |
| drmHashEntry *drmGetEntry(int fd) |
| { |
| unsigned long key = drmGetKeyFromFd(fd); |
| void *value; |
| drmHashEntry *entry; |
| |
| if (!drmHashTable) |
| drmHashTable = drmHashCreate(); |
| |
| if (drmHashLookup(drmHashTable, key, &value)) { |
| entry = drmMalloc(sizeof(*entry)); |
| entry->fd = fd; |
| entry->f = NULL; |
| entry->tagTable = drmHashCreate(); |
| drmHashInsert(drmHashTable, key, entry); |
| } else { |
| entry = value; |
| } |
| return entry; |
| } |
| |
| /** |
| * Compare two busid strings |
| * |
| * \param first |
| * \param second |
| * |
| * \return 1 if matched. |
| * |
| * \internal |
| * This function compares two bus ID strings. It understands the older |
| * PCI:b:d:f format and the newer pci:oooo:bb:dd.f format. In the format, o is |
| * domain, b is bus, d is device, f is function. |
| */ |
| static int drmMatchBusID(const char *id1, const char *id2, int pci_domain_ok) |
| { |
| /* First, check if the IDs are exactly the same */ |
| if (strcasecmp(id1, id2) == 0) |
| return 1; |
| |
| /* Try to match old/new-style PCI bus IDs. */ |
| if (strncasecmp(id1, "pci", 3) == 0) { |
| unsigned int o1, b1, d1, f1; |
| unsigned int o2, b2, d2, f2; |
| int ret; |
| |
| ret = sscanf(id1, "pci:%04x:%02x:%02x.%u", &o1, &b1, &d1, &f1); |
| if (ret != 4) { |
| o1 = 0; |
| ret = sscanf(id1, "PCI:%u:%u:%u", &b1, &d1, &f1); |
| if (ret != 3) |
| return 0; |
| } |
| |
| ret = sscanf(id2, "pci:%04x:%02x:%02x.%u", &o2, &b2, &d2, &f2); |
| if (ret != 4) { |
| o2 = 0; |
| ret = sscanf(id2, "PCI:%u:%u:%u", &b2, &d2, &f2); |
| if (ret != 3) |
| return 0; |
| } |
| |
| /* If 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; |
| } |
| |
| /** |
| * Handles error checking for chown call. |
| * |
| * \param path to file. |
| * \param id of the new owner. |
| * \param id of the new group. |
| * |
| * \return zero if success or -1 if failure. |
| * |
| * \internal |
| * Checks for failure. If failure was caused by signal call chown again. |
| * If any other failure happened then it will output error mesage using |
| * drmMsg() call. |
| */ |
| #if !defined(UDEV) |
| static int chown_check_return(const char *path, uid_t owner, gid_t group) |
| { |
| int rv; |
| |
| do { |
| rv = chown(path, owner, group); |
| } while (rv != 0 && errno == EINTR); |
| |
| if (rv == 0) |
| return 0; |
| |
| drmMsg("Failed to change owner or group for file %s! %d: %s\n", |
| path, errno, strerror(errno)); |
| return -1; |
| } |
| #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 |
| * Assembles the device name from \p minor and opens it, creating the device |
| * special file node with the major and minor numbers specified by \p dev and |
| * parent directory if necessary and was called by root. |
| */ |
| static int drmOpenDevice(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; |
| #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) { |
| 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); |
| } |
| |
| /* Check if the device node exists and create it if necessary. */ |
| if (stat(buf, &st)) { |
| if (!isroot) |
| return DRM_ERR_NOT_ROOT; |
| remove(buf); |
| mknod(buf, S_IFCHR | devmode, dev); |
| } |
| |
| if (drm_server_info && 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; |
| wait_for_udev: |
| if (stat(DRM_DIR_NAME, &st)) { |
| usleep(20); |
| udev_count++; |
| |
| if (udev_count == 50) |
| return -1; |
| goto wait_for_udev; |
| } |
| |
| if (stat(buf, &st)) { |
| usleep(20); |
| udev_count++; |
| |
| if (udev_count == 50) |
| return -1; |
| goto wait_for_udev; |
| } |
| } |
| #endif |
| |
| fd = open(buf, O_RDWR, 0); |
| drmMsg("drmOpenDevice: open result is %d, (%s)\n", |
| fd, fd < 0 ? strerror(errno) : "OK"); |
| if (fd >= 0) |
| return fd; |
| |
| #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 && 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"); |
| if (fd >= 0) |
| return fd; |
| |
| drmMsg("drmOpenDevice: Open failed\n"); |
| remove(buf); |
| #endif |
| return -errno; |
| } |
| |
| |
| /** |
| * Open the DRM device |
| * |
| * \param minor device minor number. |
| * \param create allow to create the device if set. |
| * |
| * \return a file descriptor on success, or a negative value on error. |
| * |
| * \internal |
| * Calls drmOpenDevice() if \p create is set, otherwise assembles the device |
| * name from \p minor and opens it. |
| */ |
| static int drmOpenMinor(int minor, int create, int type) |
| { |
| int fd; |
| char buf[64]; |
| const char *dev_name; |
| |
| if (create) |
| return drmOpenDevice(makedev(DRM_MAJOR, minor), minor, type); |
| |
| switch (type) { |
| case DRM_NODE_PRIMARY: |
| dev_name = DRM_DEV_NAME; |
| break; |
| case DRM_NODE_CONTROL: |
| dev_name = DRM_CONTROL_DEV_NAME; |
| break; |
| case DRM_NODE_RENDER: |
| dev_name = DRM_RENDER_DEV_NAME; |
| break; |
| default: |
| return -EINVAL; |
| }; |
| |
| sprintf(buf, dev_name, DRM_DIR_NAME, minor); |
| if ((fd = open(buf, O_RDWR, 0)) >= 0) |
| return fd; |
| return -errno; |
| } |
| |
| |
| /** |
| * Determine whether the DRM kernel driver has been loaded. |
| * |
| * \return 1 if the DRM driver is loaded, 0 otherwise. |
| * |
| * \internal |
| * Determine the presence of the kernel driver by attempting to open the 0 |
| * minor and get version information. For backward compatibility with older |
| * Linux implementations, /proc/dri is also checked. |
| */ |
| int drmAvailable(void) |
| { |
| drmVersionPtr version; |
| int retval = 0; |
| int fd; |
| |
| if ((fd = drmOpenMinor(0, 1, DRM_NODE_PRIMARY)) < 0) { |
| #ifdef __linux__ |
| /* Try proc for backward Linux compatibility */ |
| if (!access("/proc/dri/0", R_OK)) |
| return 1; |
| #endif |
| return 0; |
| } |
| |
| if ((version = drmGetVersion(fd))) { |
| retval = 1; |
| drmFreeVersion(version); |
| } |
| close(fd); |
| |
| return retval; |
| } |
| |
| static int drmGetMinorBase(int type) |
| { |
| switch (type) { |
| case DRM_NODE_PRIMARY: |
| return 0; |
| case DRM_NODE_CONTROL: |
| return 64; |
| case DRM_NODE_RENDER: |
| return 128; |
| default: |
| return -1; |
| }; |
| } |
| |
| static int drmGetMinorType(int minor) |
| { |
| int type = minor >> 6; |
| |
| if (minor < 0) |
| return -1; |
| |
| switch (type) { |
| case DRM_NODE_PRIMARY: |
| case DRM_NODE_CONTROL: |
| case DRM_NODE_RENDER: |
| return type; |
| default: |
| return -1; |
| } |
| } |
| |
| static const char *drmGetMinorName(int type) |
| { |
| switch (type) { |
| case DRM_NODE_PRIMARY: |
| return DRM_PRIMARY_MINOR_NAME; |
| case DRM_NODE_CONTROL: |
| return DRM_CONTROL_MINOR_NAME; |
| case DRM_NODE_RENDER: |
| return DRM_RENDER_MINOR_NAME; |
| default: |
| return NULL; |
| } |
| } |
| |
| /** |
| * Open the device by bus ID. |
| * |
| * \param busid bus ID. |
| * \param type device node type. |
| * |
| * \return a file descriptor on success, or a negative value on error. |
| * |
| * \internal |
| * This function attempts to open every possible minor (up to DRM_MAX_MINOR), |
| * comparing the device bus ID with the one supplied. |
| * |
| * \sa drmOpenMinor() and drmGetBusid(). |
| */ |
| static int drmOpenByBusid(const char *busid, int type) |
| { |
| int i, pci_domain_ok = 1; |
| int fd; |
| const char *buf; |
| drmSetVersion sv; |
| int base = drmGetMinorBase(type); |
| |
| if (base < 0) |
| return -1; |
| |
| drmMsg("drmOpenByBusid: Searching for BusID %s\n", busid); |
| for (i = base; i < base + DRM_MAX_MINOR; i++) { |
| fd = drmOpenMinor(i, 1, type); |
| drmMsg("drmOpenByBusid: drmOpenMinor returns %d\n", fd); |
| if (fd >= 0) { |
| /* We need to try for 1.4 first for proper PCI domain support |
| * and if that fails, we know the kernel is busted |
| */ |
| sv.drm_di_major = 1; |
| sv.drm_di_minor = 4; |
| sv.drm_dd_major = -1; /* Don't care */ |
| sv.drm_dd_minor = -1; /* Don't care */ |
| if (drmSetInterfaceVersion(fd, &sv)) { |
| #ifndef __alpha__ |
| pci_domain_ok = 0; |
| #endif |
| sv.drm_di_major = 1; |
| sv.drm_di_minor = 1; |
| sv.drm_dd_major = -1; /* Don't care */ |
| sv.drm_dd_minor = -1; /* Don't care */ |
| drmMsg("drmOpenByBusid: Interface 1.4 failed, trying 1.1\n"); |
| drmSetInterfaceVersion(fd, &sv); |
| } |
| buf = drmGetBusid(fd); |
| drmMsg("drmOpenByBusid: drmGetBusid reports %s\n", buf); |
| if (buf && drmMatchBusID(buf, busid, pci_domain_ok)) { |
| drmFreeBusid(buf); |
| return fd; |
| } |
| if (buf) |
| drmFreeBusid(buf); |
| close(fd); |
| } |
| } |
| return -1; |
| } |
| |
| |
| /** |
| * Open the device by name. |
| * |
| * \param name driver name. |
| * \param type the device node type. |
| * |
| * \return a file descriptor on success, or a negative value on error. |
| * |
| * \internal |
| * This function opens the first minor number that matches the driver name and |
| * isn't already in use. If it's in use it then it will already have a bus ID |
| * assigned. |
| * |
| * \sa drmOpenMinor(), drmGetVersion() and drmGetBusid(). |
| */ |
| static int drmOpenByName(const char *name, int type) |
| { |
| int i; |
| int fd; |
| drmVersionPtr version; |
| char * id; |
| int base = drmGetMinorBase(type); |
| |
| if (base < 0) |
| return -1; |
| |
| /* |
| * Open the first minor number that matches the driver name and isn't |
| * already in use. If it's in use it will have a busid assigned already. |
| */ |
| for (i = base; i < base + DRM_MAX_MINOR; i++) { |
| if ((fd = drmOpenMinor(i, 1, type)) >= 0) { |
| if ((version = drmGetVersion(fd))) { |
| if (!strcmp(version->name, name)) { |
| drmFreeVersion(version); |
| id = drmGetBusid(fd); |
| drmMsg("drmGetBusid returned '%s'\n", id ? id : "NULL"); |
| if (!id || !*id) { |
| if (id) |
| drmFreeBusid(id); |
| return fd; |
| } else { |
| drmFreeBusid(id); |
| } |
| } else { |
| drmFreeVersion(version); |
| } |
| } |
| close(fd); |
| } |
| } |
| |
| #ifdef __linux__ |
| /* Backward-compatibility /proc support */ |
| for (i = 0; i < 8; i++) { |
| char proc_name[64], buf[512]; |
| char *driver, *pt, *devstring; |
| int retcode; |
| |
| sprintf(proc_name, "/proc/dri/%d/name", i); |
| if ((fd = open(proc_name, 0, 0)) >= 0) { |
| retcode = read(fd, buf, sizeof(buf)-1); |
| close(fd); |
| if (retcode) { |
| buf[retcode-1] = '\0'; |
| for (driver = pt = buf; *pt && *pt != ' '; ++pt) |
| ; |
| if (*pt) { /* Device is next */ |
| *pt = '\0'; |
| if (!strcmp(driver, name)) { /* Match */ |
| for (devstring = ++pt; *pt && *pt != ' '; ++pt) |
| ; |
| if (*pt) { /* Found busid */ |
| return drmOpenByBusid(++pt, type); |
| } else { /* No busid */ |
| return drmOpenDevice(strtol(devstring, NULL, 0),i, type); |
| } |
| } |
| } |
| } |
| } |
| } |
| #endif |
| |
| return -1; |
| } |
| |
| |
| /** |
| * Open the DRM device. |
| * |
| * Looks up the specified name and bus ID, and opens the device found. The |
| * entry in /dev/dri is created if necessary and if called by root. |
| * |
| * \param name driver name. Not referenced if bus ID is supplied. |
| * \param busid bus ID. Zero if not known. |
| * |
| * \return a file descriptor on success, or a negative value on error. |
| * |
| * \internal |
| * It calls drmOpenByBusid() if \p busid is specified or drmOpenByName() |
| * otherwise. |
| */ |
| int drmOpen(const char *name, const char *busid) |
| { |
| return drmOpenWithType(name, busid, DRM_NODE_PRIMARY); |
| } |
| |
| /** |
| * Open the DRM device with specified type. |
| * |
| * Looks up the specified name and bus ID, and opens the device found. The |
| * entry in /dev/dri is created if necessary and if called by root. |
| * |
| * \param name driver name. Not referenced if bus ID is supplied. |
| * \param busid bus ID. Zero if not known. |
| * \param type the device node type to open, PRIMARY, CONTROL or RENDER |
| * |
| * \return a file descriptor on success, or a negative value on error. |
| * |
| * \internal |
| * It calls drmOpenByBusid() if \p busid is specified or drmOpenByName() |
| * otherwise. |
| */ |
| int drmOpenWithType(const char *name, const char *busid, int type) |
| { |
| if (!drmAvailable() && name != NULL && drm_server_info && |
| drm_server_info->load_module) { |
| /* try to load the kernel module */ |
| if (!drm_server_info->load_module(name)) { |
| drmMsg("[drm] failed to load kernel module \"%s\"\n", name); |
| return -1; |
| } |
| } |
| |
| if (busid) { |
| int fd = drmOpenByBusid(busid, type); |
| if (fd >= 0) |
| return fd; |
| } |
| |
| if (name) |
| return drmOpenByName(name, type); |
| |
| return -1; |
| } |
| |
| int drmOpenControl(int minor) |
| { |
| 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(). |
| * |
| * \param v pointer to the version information. |
| * |
| * \internal |
| * It frees the memory pointed by \p %v as well as all the non-null strings |
| * pointers in it. |
| */ |
| void drmFreeVersion(drmVersionPtr v) |
| { |
| if (!v) |
| return; |
| drmFree(v->name); |
| drmFree(v->date); |
| drmFree(v->desc); |
| drmFree(v); |
| } |
| |
| |
| /** |
| * Free the non-public version information returned by the kernel. |
| * |
| * \param v pointer to the version information. |
| * |
| * \internal |
| * Used by drmGetVersion() to free the memory pointed by \p %v as well as all |
| * the non-null strings pointers in it. |
| */ |
| static void drmFreeKernelVersion(drm_version_t *v) |
| { |
| if (!v) |
| return; |
| drmFree(v->name); |
| drmFree(v->date); |
| drmFree(v->desc); |
| drmFree(v); |
| } |
| |
| |
| /** |
| * Copy version information. |
| * |
| * \param d destination pointer. |
| * \param s source pointer. |
| * |
| * \internal |
| * Used by drmGetVersion() to translate the information returned by the ioctl |
| * interface in a private structure into the public structure counterpart. |
| */ |
| static void drmCopyVersion(drmVersionPtr d, const drm_version_t *s) |
| { |
| d->version_major = s->version_major; |
| d->version_minor = s->version_minor; |
| d->version_patchlevel = s->version_patchlevel; |
| d->name_len = s->name_len; |
| d->name = strdup(s->name); |
| d->date_len = s->date_len; |
| d->date = strdup(s->date); |
| d->desc_len = s->desc_len; |
| d->desc = strdup(s->desc); |
| } |
| |
| |
| /** |
| * Query the driver version information. |
| * |
| * \param fd file descriptor. |
| * |
| * \return pointer to a drmVersion structure which should be freed with |
| * drmFreeVersion(). |
| * |
| * \note Similar information is available via /proc/dri. |
| * |
| * \internal |
| * It gets the version information via successive DRM_IOCTL_VERSION ioctls, |
| * first with zeros to get the string lengths, and then the actually strings. |
| * It also null-terminates them since they might not be already. |
| */ |
| drmVersionPtr drmGetVersion(int fd) |
| { |
| drmVersionPtr retval; |
| drm_version_t *version = drmMalloc(sizeof(*version)); |
| |
| if (drmIoctl(fd, DRM_IOCTL_VERSION, version)) { |
| drmFreeKernelVersion(version); |
| return NULL; |
| } |
| |
| if (version->name_len) |
| version->name = drmMalloc(version->name_len + 1); |
| if (version->date_len) |
| version->date = drmMalloc(version->date_len + 1); |
| if (version->desc_len) |
| version->desc = drmMalloc(version->desc_len + 1); |
| |
| if (drmIoctl(fd, DRM_IOCTL_VERSION, version)) { |
| drmMsg("DRM_IOCTL_VERSION: %s\n", strerror(errno)); |
| drmFreeKernelVersion(version); |
| return NULL; |
| } |
| |
| /* The results might not be null-terminated strings, so terminate them. */ |
| if (version->name_len) version->name[version->name_len] = '\0'; |
| if (version->date_len) version->date[version->date_len] = '\0'; |
| if (version->desc_len) version->desc[version->desc_len] = '\0'; |
| |
| retval = drmMalloc(sizeof(*retval)); |
| drmCopyVersion(retval, version); |
| drmFreeKernelVersion(version); |
| return retval; |
| } |
| |
| |
| /** |
| * Get version information for the DRM user space library. |
| * |
| * This version number is driver independent. |
| * |
| * \param fd file descriptor. |
| * |
| * \return version information. |
| * |
| * \internal |
| * This function allocates and fills a drm_version structure with a hard coded |
| * version number. |
| */ |
| drmVersionPtr drmGetLibVersion(int fd) |
| { |
| drm_version_t *version = drmMalloc(sizeof(*version)); |
| |
| /* Version history: |
| * NOTE THIS MUST NOT GO ABOVE VERSION 1.X due to drivers needing it |
| * revision 1.0.x = original DRM interface with no drmGetLibVersion |
| * entry point and many drm<Device> extensions |
| * revision 1.1.x = added drmCommand entry points for device extensions |
| * added drmGetLibVersion to identify libdrm.a version |
| * revision 1.2.x = added drmSetInterfaceVersion |
| * modified drmOpen to handle both busid and name |
| * revision 1.3.x = added server + memory manager |
| */ |
| version->version_major = 1; |
| version->version_minor = 3; |
| version->version_patchlevel = 0; |
| |
| return (drmVersionPtr)version; |
| } |
| |
| int drmGetCap(int fd, uint64_t capability, uint64_t *value) |
| { |
| struct drm_get_cap cap; |
| int ret; |
| |
| memclear(cap); |
| cap.capability = capability; |
| |
| ret = drmIoctl(fd, DRM_IOCTL_GET_CAP, &cap); |
| if (ret) |
| return ret; |
| |
| *value = cap.value; |
| return 0; |
| } |
| |
| int drmSetClientCap(int fd, uint64_t capability, uint64_t value) |
| { |
| struct drm_set_client_cap cap; |
| |
| memclear(cap); |
| cap.capability = capability; |
| cap.value = value; |
| |
| return drmIoctl(fd, DRM_IOCTL_SET_CLIENT_CAP, &cap); |
| } |
| |
| /** |
| * Free the bus ID information. |
| * |
| * \param busid bus ID information string as given by drmGetBusid(). |
| * |
| * \internal |
| * This function is just frees the memory pointed by \p busid. |
| */ |
| void drmFreeBusid(const char *busid) |
| { |
| drmFree((void *)busid); |
| } |
| |
| |
| /** |
| * Get the bus ID of the device. |
| * |
| * \param fd file descriptor. |
| * |
| * \return bus ID string. |
| * |
| * \internal |
| * This function gets the bus ID via successive DRM_IOCTL_GET_UNIQUE ioctls to |
| * get the string length and data, passing the arguments in a drm_unique |
| * structure. |
| */ |
| char *drmGetBusid(int fd) |
| { |
| drm_unique_t u; |
| |
| memclear(u); |
| |
| if (drmIoctl(fd, DRM_IOCTL_GET_UNIQUE, &u)) |
| return NULL; |
| u.unique = drmMalloc(u.unique_len + 1); |
| if (drmIoctl(fd, DRM_IOCTL_GET_UNIQUE, &u)) { |
| drmFree(u.unique); |
| return NULL; |
| } |
| u.unique[u.unique_len] = '\0'; |
| |
| return u.unique; |
| } |
| |
| |
| /** |
| * Set the bus ID of the device. |
| * |
| * \param fd file descriptor. |
| * \param busid bus ID string. |
| * |
| * \return zero on success, negative on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_SET_UNIQUE ioctl, passing |
| * the arguments in a drm_unique structure. |
| */ |
| int drmSetBusid(int fd, const char *busid) |
| { |
| drm_unique_t u; |
| |
| memclear(u); |
| u.unique = (char *)busid; |
| u.unique_len = strlen(busid); |
| |
| if (drmIoctl(fd, DRM_IOCTL_SET_UNIQUE, &u)) { |
| return -errno; |
| } |
| return 0; |
| } |
| |
| int drmGetMagic(int fd, drm_magic_t * magic) |
| { |
| drm_auth_t auth; |
| |
| memclear(auth); |
| |
| *magic = 0; |
| if (drmIoctl(fd, DRM_IOCTL_GET_MAGIC, &auth)) |
| return -errno; |
| *magic = auth.magic; |
| return 0; |
| } |
| |
| int drmAuthMagic(int fd, drm_magic_t magic) |
| { |
| drm_auth_t auth; |
| |
| memclear(auth); |
| auth.magic = magic; |
| if (drmIoctl(fd, DRM_IOCTL_AUTH_MAGIC, &auth)) |
| return -errno; |
| return 0; |
| } |
| |
| /** |
| * Specifies a range of memory that is available for mapping by a |
| * non-root process. |
| * |
| * \param fd file descriptor. |
| * \param offset usually the physical address. The actual meaning depends of |
| * the \p type parameter. See below. |
| * \param size of the memory in bytes. |
| * \param type type of the memory to be mapped. |
| * \param flags combination of several flags to modify the function actions. |
| * \param handle will be set to a value that may be used as the offset |
| * parameter for mmap(). |
| * |
| * \return zero on success or a negative value on error. |
| * |
| * \par Mapping the frame buffer |
| * For the frame buffer |
| * - \p offset will be the physical address of the start of the frame buffer, |
| * - \p size will be the size of the frame buffer in bytes, and |
| * - \p type will be DRM_FRAME_BUFFER. |
| * |
| * \par |
| * The area mapped will be uncached. If MTRR support is available in the |
| * kernel, the frame buffer area will be set to write combining. |
| * |
| * \par Mapping the MMIO register area |
| * For the MMIO register area, |
| * - \p offset will be the physical address of the start of the register area, |
| * - \p size will be the size of the register area bytes, and |
| * - \p type will be DRM_REGISTERS. |
| * \par |
| * The area mapped will be uncached. |
| * |
| * \par Mapping the SAREA |
| * For the SAREA, |
| * - \p offset will be ignored and should be set to zero, |
| * - \p size will be the desired size of the SAREA in bytes, |
| * - \p type will be DRM_SHM. |
| * |
| * \par |
| * A shared memory area of the requested size will be created and locked in |
| * kernel memory. This area may be mapped into client-space by using the handle |
| * returned. |
| * |
| * \note May only be called by root. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_ADD_MAP ioctl, passing |
| * the arguments in a drm_map structure. |
| */ |
| int drmAddMap(int fd, drm_handle_t offset, drmSize size, drmMapType type, |
| drmMapFlags flags, drm_handle_t *handle) |
| { |
| drm_map_t map; |
| |
| memclear(map); |
| map.offset = offset; |
| map.size = size; |
| map.type = type; |
| map.flags = flags; |
| if (drmIoctl(fd, DRM_IOCTL_ADD_MAP, &map)) |
| return -errno; |
| if (handle) |
| *handle = (drm_handle_t)(uintptr_t)map.handle; |
| return 0; |
| } |
| |
| int drmRmMap(int fd, drm_handle_t handle) |
| { |
| drm_map_t map; |
| |
| memclear(map); |
| map.handle = (void *)(uintptr_t)handle; |
| |
| if(drmIoctl(fd, DRM_IOCTL_RM_MAP, &map)) |
| return -errno; |
| return 0; |
| } |
| |
| /** |
| * Make buffers available for DMA transfers. |
| * |
| * \param fd file descriptor. |
| * \param count number of buffers. |
| * \param size size of each buffer. |
| * \param flags buffer allocation flags. |
| * \param agp_offset offset in the AGP aperture |
| * |
| * \return number of buffers allocated, negative on error. |
| * |
| * \internal |
| * This function is a wrapper around DRM_IOCTL_ADD_BUFS ioctl. |
| * |
| * \sa drm_buf_desc. |
| */ |
| int drmAddBufs(int fd, int count, int size, drmBufDescFlags flags, |
| int agp_offset) |
| { |
| drm_buf_desc_t request; |
| |
| memclear(request); |
| request.count = count; |
| request.size = size; |
| request.flags = flags; |
| request.agp_start = agp_offset; |
| |
| if (drmIoctl(fd, DRM_IOCTL_ADD_BUFS, &request)) |
| return -errno; |
| return request.count; |
| } |
| |
| int drmMarkBufs(int fd, double low, double high) |
| { |
| drm_buf_info_t info; |
| int i; |
| |
| memclear(info); |
| |
| if (drmIoctl(fd, DRM_IOCTL_INFO_BUFS, &info)) |
| return -EINVAL; |
| |
| if (!info.count) |
| return -EINVAL; |
| |
| if (!(info.list = drmMalloc(info.count * sizeof(*info.list)))) |
| return -ENOMEM; |
| |
| if (drmIoctl(fd, DRM_IOCTL_INFO_BUFS, &info)) { |
| int retval = -errno; |
| drmFree(info.list); |
| return retval; |
| } |
| |
| for (i = 0; i < info.count; i++) { |
| info.list[i].low_mark = low * info.list[i].count; |
| info.list[i].high_mark = high * info.list[i].count; |
| if (drmIoctl(fd, DRM_IOCTL_MARK_BUFS, &info.list[i])) { |
| int retval = -errno; |
| drmFree(info.list); |
| return retval; |
| } |
| } |
| drmFree(info.list); |
| |
| return 0; |
| } |
| |
| /** |
| * Free buffers. |
| * |
| * \param fd file descriptor. |
| * \param count number of buffers to free. |
| * \param list list of buffers to be freed. |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \note This function is primarily used for debugging. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_FREE_BUFS ioctl, passing |
| * the arguments in a drm_buf_free structure. |
| */ |
| int drmFreeBufs(int fd, int count, int *list) |
| { |
| drm_buf_free_t request; |
| |
| memclear(request); |
| request.count = count; |
| request.list = list; |
| if (drmIoctl(fd, DRM_IOCTL_FREE_BUFS, &request)) |
| return -errno; |
| return 0; |
| } |
| |
| |
| /** |
| * Close the device. |
| * |
| * \param fd file descriptor. |
| * |
| * \internal |
| * This function closes the file descriptor. |
| */ |
| int drmClose(int fd) |
| { |
| unsigned long key = drmGetKeyFromFd(fd); |
| drmHashEntry *entry = drmGetEntry(fd); |
| |
| drmHashDestroy(entry->tagTable); |
| entry->fd = 0; |
| entry->f = NULL; |
| entry->tagTable = NULL; |
| |
| drmHashDelete(drmHashTable, key); |
| drmFree(entry); |
| |
| return close(fd); |
| } |
| |
| |
| /** |
| * Map a region of memory. |
| * |
| * \param fd file descriptor. |
| * \param handle handle returned by drmAddMap(). |
| * \param size size in bytes. Must match the size used by drmAddMap(). |
| * \param address will contain the user-space virtual address where the mapping |
| * begins. |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * This function is a wrapper for mmap(). |
| */ |
| int drmMap(int fd, drm_handle_t handle, drmSize size, drmAddressPtr address) |
| { |
| static unsigned long pagesize_mask = 0; |
| |
| if (fd < 0) |
| return -EINVAL; |
| |
| if (!pagesize_mask) |
| pagesize_mask = getpagesize() - 1; |
| |
| size = (size + pagesize_mask) & ~pagesize_mask; |
| |
| *address = drm_mmap(0, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, handle); |
| if (*address == MAP_FAILED) |
| return -errno; |
| return 0; |
| } |
| |
| |
| /** |
| * Unmap mappings obtained with drmMap(). |
| * |
| * \param address address as given by drmMap(). |
| * \param size size in bytes. Must match the size used by drmMap(). |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * This function is a wrapper for munmap(). |
| */ |
| int drmUnmap(drmAddress address, drmSize size) |
| { |
| return drm_munmap(address, size); |
| } |
| |
| drmBufInfoPtr drmGetBufInfo(int fd) |
| { |
| drm_buf_info_t info; |
| drmBufInfoPtr retval; |
| int i; |
| |
| memclear(info); |
| |
| if (drmIoctl(fd, DRM_IOCTL_INFO_BUFS, &info)) |
| return NULL; |
| |
| if (info.count) { |
| if (!(info.list = drmMalloc(info.count * sizeof(*info.list)))) |
| return NULL; |
| |
| if (drmIoctl(fd, DRM_IOCTL_INFO_BUFS, &info)) { |
| drmFree(info.list); |
| return NULL; |
| } |
| |
| retval = drmMalloc(sizeof(*retval)); |
| retval->count = info.count; |
| retval->list = drmMalloc(info.count * sizeof(*retval->list)); |
| for (i = 0; i < info.count; i++) { |
| retval->list[i].count = info.list[i].count; |
| retval->list[i].size = info.list[i].size; |
| retval->list[i].low_mark = info.list[i].low_mark; |
| retval->list[i].high_mark = info.list[i].high_mark; |
| } |
| drmFree(info.list); |
| return retval; |
| } |
| return NULL; |
| } |
| |
| /** |
| * Map all DMA buffers into client-virtual space. |
| * |
| * \param fd file descriptor. |
| * |
| * \return a pointer to a ::drmBufMap structure. |
| * |
| * \note The client may not use these buffers until obtaining buffer indices |
| * with drmDMA(). |
| * |
| * \internal |
| * This function calls the DRM_IOCTL_MAP_BUFS ioctl and copies the returned |
| * information about the buffers in a drm_buf_map structure into the |
| * client-visible data structures. |
| */ |
| drmBufMapPtr drmMapBufs(int fd) |
| { |
| drm_buf_map_t bufs; |
| drmBufMapPtr retval; |
| int i; |
| |
| memclear(bufs); |
| if (drmIoctl(fd, DRM_IOCTL_MAP_BUFS, &bufs)) |
| return NULL; |
| |
| if (!bufs.count) |
| return NULL; |
| |
| if (!(bufs.list = drmMalloc(bufs.count * sizeof(*bufs.list)))) |
| return NULL; |
| |
| if (drmIoctl(fd, DRM_IOCTL_MAP_BUFS, &bufs)) { |
| drmFree(bufs.list); |
| return NULL; |
| } |
| |
| retval = drmMalloc(sizeof(*retval)); |
| retval->count = bufs.count; |
| retval->list = drmMalloc(bufs.count * sizeof(*retval->list)); |
| for (i = 0; i < bufs.count; i++) { |
| retval->list[i].idx = bufs.list[i].idx; |
| retval->list[i].total = bufs.list[i].total; |
| retval->list[i].used = 0; |
| retval->list[i].address = bufs.list[i].address; |
| } |
| |
| drmFree(bufs.list); |
| return retval; |
| } |
| |
| |
| /** |
| * Unmap buffers allocated with drmMapBufs(). |
| * |
| * \return zero on success, or negative value on failure. |
| * |
| * \internal |
| * Calls munmap() for every buffer stored in \p bufs and frees the |
| * memory allocated by drmMapBufs(). |
| */ |
| int drmUnmapBufs(drmBufMapPtr bufs) |
| { |
| int i; |
| |
| for (i = 0; i < bufs->count; i++) { |
| drm_munmap(bufs->list[i].address, bufs->list[i].total); |
| } |
| |
| drmFree(bufs->list); |
| drmFree(bufs); |
| return 0; |
| } |
| |
| |
| #define DRM_DMA_RETRY 16 |
| |
| /** |
| * Reserve DMA buffers. |
| * |
| * \param fd file descriptor. |
| * \param request |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * Assemble the arguments into a drm_dma structure and keeps issuing the |
| * DRM_IOCTL_DMA ioctl until success or until maximum number of retries. |
| */ |
| int drmDMA(int fd, drmDMAReqPtr request) |
| { |
| drm_dma_t dma; |
| int ret, i = 0; |
| |
| dma.context = request->context; |
| dma.send_count = request->send_count; |
| dma.send_indices = request->send_list; |
| dma.send_sizes = request->send_sizes; |
| dma.flags = request->flags; |
| dma.request_count = request->request_count; |
| dma.request_size = request->request_size; |
| dma.request_indices = request->request_list; |
| dma.request_sizes = request->request_sizes; |
| dma.granted_count = 0; |
| |
| do { |
| ret = ioctl( fd, DRM_IOCTL_DMA, &dma ); |
| } while ( ret && errno == EAGAIN && i++ < DRM_DMA_RETRY ); |
| |
| if ( ret == 0 ) { |
| request->granted_count = dma.granted_count; |
| return 0; |
| } else { |
| return -errno; |
| } |
| } |
| |
| |
| /** |
| * Obtain heavyweight hardware lock. |
| * |
| * \param fd file descriptor. |
| * \param context context. |
| * \param flags flags that determine the sate of the hardware when the function |
| * returns. |
| * |
| * \return always zero. |
| * |
| * \internal |
| * This function translates the arguments into a drm_lock structure and issue |
| * the DRM_IOCTL_LOCK ioctl until the lock is successfully acquired. |
| */ |
| int drmGetLock(int fd, drm_context_t context, drmLockFlags flags) |
| { |
| drm_lock_t lock; |
| |
| memclear(lock); |
| lock.context = context; |
| lock.flags = 0; |
| if (flags & DRM_LOCK_READY) lock.flags |= _DRM_LOCK_READY; |
| if (flags & DRM_LOCK_QUIESCENT) lock.flags |= _DRM_LOCK_QUIESCENT; |
| if (flags & DRM_LOCK_FLUSH) lock.flags |= _DRM_LOCK_FLUSH; |
| if (flags & DRM_LOCK_FLUSH_ALL) lock.flags |= _DRM_LOCK_FLUSH_ALL; |
| if (flags & DRM_HALT_ALL_QUEUES) lock.flags |= _DRM_HALT_ALL_QUEUES; |
| if (flags & DRM_HALT_CUR_QUEUES) lock.flags |= _DRM_HALT_CUR_QUEUES; |
| |
| while (drmIoctl(fd, DRM_IOCTL_LOCK, &lock)) |
| ; |
| return 0; |
| } |
| |
| /** |
| * Release the hardware lock. |
| * |
| * \param fd file descriptor. |
| * \param context context. |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_UNLOCK ioctl, passing the |
| * argument in a drm_lock structure. |
| */ |
| int drmUnlock(int fd, drm_context_t context) |
| { |
| drm_lock_t lock; |
| |
| memclear(lock); |
| lock.context = context; |
| return drmIoctl(fd, DRM_IOCTL_UNLOCK, &lock); |
| } |
| |
| drm_context_t *drmGetReservedContextList(int fd, int *count) |
| { |
| drm_ctx_res_t res; |
| drm_ctx_t *list; |
| drm_context_t * retval; |
| int i; |
| |
| memclear(res); |
| if (drmIoctl(fd, DRM_IOCTL_RES_CTX, &res)) |
| return NULL; |
| |
| if (!res.count) |
| return NULL; |
| |
| if (!(list = drmMalloc(res.count * sizeof(*list)))) |
| return NULL; |
| if (!(retval = drmMalloc(res.count * sizeof(*retval)))) |
| goto err_free_list; |
| |
| res.contexts = list; |
| if (drmIoctl(fd, DRM_IOCTL_RES_CTX, &res)) |
| goto err_free_context; |
| |
| for (i = 0; i < res.count; i++) |
| retval[i] = list[i].handle; |
| drmFree(list); |
| |
| *count = res.count; |
| return retval; |
| |
| err_free_list: |
| drmFree(list); |
| err_free_context: |
| drmFree(retval); |
| return NULL; |
| } |
| |
| void drmFreeReservedContextList(drm_context_t *pt) |
| { |
| drmFree(pt); |
| } |
| |
| /** |
| * Create context. |
| * |
| * Used by the X server during GLXContext initialization. This causes |
| * per-context kernel-level resources to be allocated. |
| * |
| * \param fd file descriptor. |
| * \param handle is set on success. To be used by the client when requesting DMA |
| * dispatch with drmDMA(). |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \note May only be called by root. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_ADD_CTX ioctl, passing the |
| * argument in a drm_ctx structure. |
| */ |
| int drmCreateContext(int fd, drm_context_t *handle) |
| { |
| drm_ctx_t ctx; |
| |
| memclear(ctx); |
| if (drmIoctl(fd, DRM_IOCTL_ADD_CTX, &ctx)) |
| return -errno; |
| *handle = ctx.handle; |
| return 0; |
| } |
| |
| int drmSwitchToContext(int fd, drm_context_t context) |
| { |
| drm_ctx_t ctx; |
| |
| memclear(ctx); |
| ctx.handle = context; |
| if (drmIoctl(fd, DRM_IOCTL_SWITCH_CTX, &ctx)) |
| return -errno; |
| return 0; |
| } |
| |
| int drmSetContextFlags(int fd, drm_context_t context, drm_context_tFlags flags) |
| { |
| drm_ctx_t ctx; |
| |
| /* |
| * Context preserving means that no context switches are done between DMA |
| * buffers from one context and the next. This is suitable for use in the |
| * X server (which promises to maintain hardware context), or in the |
| * client-side library when buffers are swapped on behalf of two threads. |
| */ |
| memclear(ctx); |
| ctx.handle = context; |
| if (flags & DRM_CONTEXT_PRESERVED) |
| ctx.flags |= _DRM_CONTEXT_PRESERVED; |
| if (flags & DRM_CONTEXT_2DONLY) |
| ctx.flags |= _DRM_CONTEXT_2DONLY; |
| if (drmIoctl(fd, DRM_IOCTL_MOD_CTX, &ctx)) |
| return -errno; |
| return 0; |
| } |
| |
| int drmGetContextFlags(int fd, drm_context_t context, |
| drm_context_tFlagsPtr flags) |
| { |
| drm_ctx_t ctx; |
| |
| memclear(ctx); |
| ctx.handle = context; |
| if (drmIoctl(fd, DRM_IOCTL_GET_CTX, &ctx)) |
| return -errno; |
| *flags = 0; |
| if (ctx.flags & _DRM_CONTEXT_PRESERVED) |
| *flags |= DRM_CONTEXT_PRESERVED; |
| if (ctx.flags & _DRM_CONTEXT_2DONLY) |
| *flags |= DRM_CONTEXT_2DONLY; |
| return 0; |
| } |
| |
| /** |
| * Destroy context. |
| * |
| * Free any kernel-level resources allocated with drmCreateContext() associated |
| * with the context. |
| * |
| * \param fd file descriptor. |
| * \param handle handle given by drmCreateContext(). |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \note May only be called by root. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_RM_CTX ioctl, passing the |
| * argument in a drm_ctx structure. |
| */ |
| int drmDestroyContext(int fd, drm_context_t handle) |
| { |
| drm_ctx_t ctx; |
| |
| memclear(ctx); |
| ctx.handle = handle; |
| if (drmIoctl(fd, DRM_IOCTL_RM_CTX, &ctx)) |
| return -errno; |
| return 0; |
| } |
| |
| int drmCreateDrawable(int fd, drm_drawable_t *handle) |
| { |
| drm_draw_t draw; |
| |
| memclear(draw); |
| if (drmIoctl(fd, DRM_IOCTL_ADD_DRAW, &draw)) |
| return -errno; |
| *handle = draw.handle; |
| return 0; |
| } |
| |
| int drmDestroyDrawable(int fd, drm_drawable_t handle) |
| { |
| drm_draw_t draw; |
| |
| memclear(draw); |
| draw.handle = handle; |
| if (drmIoctl(fd, DRM_IOCTL_RM_DRAW, &draw)) |
| return -errno; |
| return 0; |
| } |
| |
| int drmUpdateDrawableInfo(int fd, drm_drawable_t handle, |
| drm_drawable_info_type_t type, unsigned int num, |
| void *data) |
| { |
| drm_update_draw_t update; |
| |
| memclear(update); |
| update.handle = handle; |
| update.type = type; |
| update.num = num; |
| update.data = (unsigned long long)(unsigned long)data; |
| |
| if (drmIoctl(fd, DRM_IOCTL_UPDATE_DRAW, &update)) |
| return -errno; |
| |
| return 0; |
| } |
| |
| /** |
| * Acquire the AGP device. |
| * |
| * Must be called before any of the other AGP related calls. |
| * |
| * \param fd file descriptor. |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_AGP_ACQUIRE ioctl. |
| */ |
| int drmAgpAcquire(int fd) |
| { |
| if (drmIoctl(fd, DRM_IOCTL_AGP_ACQUIRE, NULL)) |
| return -errno; |
| return 0; |
| } |
| |
| |
| /** |
| * Release the AGP device. |
| * |
| * \param fd file descriptor. |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_AGP_RELEASE ioctl. |
| */ |
| int drmAgpRelease(int fd) |
| { |
| if (drmIoctl(fd, DRM_IOCTL_AGP_RELEASE, NULL)) |
| return -errno; |
| return 0; |
| } |
| |
| |
| /** |
| * Set the AGP mode. |
| * |
| * \param fd file descriptor. |
| * \param mode AGP mode. |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_AGP_ENABLE ioctl, passing the |
| * argument in a drm_agp_mode structure. |
| */ |
| int drmAgpEnable(int fd, unsigned long mode) |
| { |
| drm_agp_mode_t m; |
| |
| memclear(m); |
| m.mode = mode; |
| if (drmIoctl(fd, DRM_IOCTL_AGP_ENABLE, &m)) |
| return -errno; |
| return 0; |
| } |
| |
| |
| /** |
| * Allocate a chunk of AGP memory. |
| * |
| * \param fd file descriptor. |
| * \param size requested memory size in bytes. Will be rounded to page boundary. |
| * \param type type of memory to allocate. |
| * \param address if not zero, will be set to the physical address of the |
| * allocated memory. |
| * \param handle on success will be set to a handle of the allocated memory. |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_AGP_ALLOC ioctl, passing the |
| * arguments in a drm_agp_buffer structure. |
| */ |
| int drmAgpAlloc(int fd, unsigned long size, unsigned long type, |
| unsigned long *address, drm_handle_t *handle) |
| { |
| drm_agp_buffer_t b; |
| |
| memclear(b); |
| *handle = DRM_AGP_NO_HANDLE; |
| b.size = size; |
| b.type = type; |
| if (drmIoctl(fd, DRM_IOCTL_AGP_ALLOC, &b)) |
| return -errno; |
| if (address != 0UL) |
| *address = b.physical; |
| *handle = b.handle; |
| return 0; |
| } |
| |
| |
| /** |
| * Free a chunk of AGP memory. |
| * |
| * \param fd file descriptor. |
| * \param handle handle to the allocated memory, as given by drmAgpAllocate(). |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_AGP_FREE ioctl, passing the |
| * argument in a drm_agp_buffer structure. |
| */ |
| int drmAgpFree(int fd, drm_handle_t handle) |
| { |
| drm_agp_buffer_t b; |
| |
| memclear(b); |
| b.handle = handle; |
| if (drmIoctl(fd, DRM_IOCTL_AGP_FREE, &b)) |
| return -errno; |
| return 0; |
| } |
| |
| |
| /** |
| * Bind a chunk of AGP memory. |
| * |
| * \param fd file descriptor. |
| * \param handle handle to the allocated memory, as given by drmAgpAllocate(). |
| * \param offset offset in bytes. It will round to page boundary. |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_AGP_BIND ioctl, passing the |
| * argument in a drm_agp_binding structure. |
| */ |
| int drmAgpBind(int fd, drm_handle_t handle, unsigned long offset) |
| { |
| drm_agp_binding_t b; |
| |
| memclear(b); |
| b.handle = handle; |
| b.offset = offset; |
| if (drmIoctl(fd, DRM_IOCTL_AGP_BIND, &b)) |
| return -errno; |
| return 0; |
| } |
| |
| |
| /** |
| * Unbind a chunk of AGP memory. |
| * |
| * \param fd file descriptor. |
| * \param handle handle to the allocated memory, as given by drmAgpAllocate(). |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_AGP_UNBIND ioctl, passing |
| * the argument in a drm_agp_binding structure. |
| */ |
| int drmAgpUnbind(int fd, drm_handle_t handle) |
| { |
| drm_agp_binding_t b; |
| |
| memclear(b); |
| b.handle = handle; |
| if (drmIoctl(fd, DRM_IOCTL_AGP_UNBIND, &b)) |
| return -errno; |
| return 0; |
| } |
| |
| |
| /** |
| * Get AGP driver major version number. |
| * |
| * \param fd file descriptor. |
| * |
| * \return major version number on success, or a negative value on failure.. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the |
| * necessary information in a drm_agp_info structure. |
| */ |
| int drmAgpVersionMajor(int fd) |
| { |
| drm_agp_info_t i; |
| |
| memclear(i); |
| |
| if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i)) |
| return -errno; |
| return i.agp_version_major; |
| } |
| |
| |
| /** |
| * Get AGP driver minor version number. |
| * |
| * \param fd file descriptor. |
| * |
| * \return minor version number on success, or a negative value on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the |
| * necessary information in a drm_agp_info structure. |
| */ |
| int drmAgpVersionMinor(int fd) |
| { |
| drm_agp_info_t i; |
| |
| memclear(i); |
| |
| if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i)) |
| return -errno; |
| return i.agp_version_minor; |
| } |
| |
| |
| /** |
| * Get AGP mode. |
| * |
| * \param fd file descriptor. |
| * |
| * \return mode on success, or zero on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the |
| * necessary information in a drm_agp_info structure. |
| */ |
| unsigned long drmAgpGetMode(int fd) |
| { |
| drm_agp_info_t i; |
| |
| memclear(i); |
| |
| if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i)) |
| return 0; |
| return i.mode; |
| } |
| |
| |
| /** |
| * Get AGP aperture base. |
| * |
| * \param fd file descriptor. |
| * |
| * \return aperture base on success, zero on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the |
| * necessary information in a drm_agp_info structure. |
| */ |
| unsigned long drmAgpBase(int fd) |
| { |
| drm_agp_info_t i; |
| |
| memclear(i); |
| |
| if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i)) |
| return 0; |
| return i.aperture_base; |
| } |
| |
| |
| /** |
| * Get AGP aperture size. |
| * |
| * \param fd file descriptor. |
| * |
| * \return aperture size on success, zero on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the |
| * necessary information in a drm_agp_info structure. |
| */ |
| unsigned long drmAgpSize(int fd) |
| { |
| drm_agp_info_t i; |
| |
| memclear(i); |
| |
| if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i)) |
| return 0; |
| return i.aperture_size; |
| } |
| |
| |
| /** |
| * Get used AGP memory. |
| * |
| * \param fd file descriptor. |
| * |
| * \return memory used on success, or zero on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the |
| * necessary information in a drm_agp_info structure. |
| */ |
| unsigned long drmAgpMemoryUsed(int fd) |
| { |
| drm_agp_info_t i; |
| |
| memclear(i); |
| |
| if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i)) |
| return 0; |
| return i.memory_used; |
| } |
| |
| |
| /** |
| * Get available AGP memory. |
| * |
| * \param fd file descriptor. |
| * |
| * \return memory available on success, or zero on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the |
| * necessary information in a drm_agp_info structure. |
| */ |
| unsigned long drmAgpMemoryAvail(int fd) |
| { |
| drm_agp_info_t i; |
| |
| memclear(i); |
| |
| if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i)) |
| return 0; |
| return i.memory_allowed; |
| } |
| |
| |
| /** |
| * Get hardware vendor ID. |
| * |
| * \param fd file descriptor. |
| * |
| * \return vendor ID on success, or zero on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the |
| * necessary information in a drm_agp_info structure. |
| */ |
| unsigned int drmAgpVendorId(int fd) |
| { |
| drm_agp_info_t i; |
| |
| memclear(i); |
| |
| if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i)) |
| return 0; |
| return i.id_vendor; |
| } |
| |
| |
| /** |
| * Get hardware device ID. |
| * |
| * \param fd file descriptor. |
| * |
| * \return zero on success, or zero on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the |
| * necessary information in a drm_agp_info structure. |
| */ |
| unsigned int drmAgpDeviceId(int fd) |
| { |
| drm_agp_info_t i; |
| |
| memclear(i); |
| |
| if (drmIoctl(fd, DRM_IOCTL_AGP_INFO, &i)) |
| return 0; |
| return i.id_device; |
| } |
| |
| int drmScatterGatherAlloc(int fd, unsigned long size, drm_handle_t *handle) |
| { |
| drm_scatter_gather_t sg; |
| |
| memclear(sg); |
| |
| *handle = 0; |
| sg.size = size; |
| if (drmIoctl(fd, DRM_IOCTL_SG_ALLOC, &sg)) |
| return -errno; |
| *handle = sg.handle; |
| return 0; |
| } |
| |
| int drmScatterGatherFree(int fd, drm_handle_t handle) |
| { |
| drm_scatter_gather_t sg; |
| |
| memclear(sg); |
| sg.handle = handle; |
| if (drmIoctl(fd, DRM_IOCTL_SG_FREE, &sg)) |
| return -errno; |
| return 0; |
| } |
| |
| /** |
| * Wait for VBLANK. |
| * |
| * \param fd file descriptor. |
| * \param vbl pointer to a drmVBlank structure. |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_WAIT_VBLANK ioctl. |
| */ |
| int drmWaitVBlank(int fd, drmVBlankPtr vbl) |
| { |
| struct timespec timeout, cur; |
| int ret; |
| |
| ret = clock_gettime(CLOCK_MONOTONIC, &timeout); |
| if (ret < 0) { |
| fprintf(stderr, "clock_gettime failed: %s\n", strerror(errno)); |
| goto out; |
| } |
| timeout.tv_sec++; |
| |
| do { |
| ret = ioctl(fd, DRM_IOCTL_WAIT_VBLANK, vbl); |
| vbl->request.type &= ~DRM_VBLANK_RELATIVE; |
| if (ret && errno == EINTR) { |
| clock_gettime(CLOCK_MONOTONIC, &cur); |
| /* Timeout after 1s */ |
| if (cur.tv_sec > timeout.tv_sec + 1 || |
| (cur.tv_sec == timeout.tv_sec && cur.tv_nsec >= |
| timeout.tv_nsec)) { |
| errno = EBUSY; |
| ret = -1; |
| break; |
| } |
| } |
| } while (ret && errno == EINTR); |
| |
| out: |
| return ret; |
| } |
| |
| int drmError(int err, const char *label) |
| { |
| switch (err) { |
| case DRM_ERR_NO_DEVICE: |
| fprintf(stderr, "%s: no device\n", label); |
| break; |
| case DRM_ERR_NO_ACCESS: |
| fprintf(stderr, "%s: no access\n", label); |
| break; |
| case DRM_ERR_NOT_ROOT: |
| fprintf(stderr, "%s: not root\n", label); |
| break; |
| case DRM_ERR_INVALID: |
| fprintf(stderr, "%s: invalid args\n", label); |
| break; |
| default: |
| if (err < 0) |
| err = -err; |
| fprintf( stderr, "%s: error %d (%s)\n", label, err, strerror(err) ); |
| break; |
| } |
| |
| return 1; |
| } |
| |
| /** |
| * Install IRQ handler. |
| * |
| * \param fd file descriptor. |
| * \param irq IRQ number. |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_CONTROL ioctl, passing the |
| * argument in a drm_control structure. |
| */ |
| int drmCtlInstHandler(int fd, int irq) |
| { |
| drm_control_t ctl; |
| |
| memclear(ctl); |
| ctl.func = DRM_INST_HANDLER; |
| ctl.irq = irq; |
| if (drmIoctl(fd, DRM_IOCTL_CONTROL, &ctl)) |
| return -errno; |
| return 0; |
| } |
| |
| |
| /** |
| * Uninstall IRQ handler. |
| * |
| * \param fd file descriptor. |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_CONTROL ioctl, passing the |
| * argument in a drm_control structure. |
| */ |
| int drmCtlUninstHandler(int fd) |
| { |
| drm_control_t ctl; |
| |
| memclear(ctl); |
| ctl.func = DRM_UNINST_HANDLER; |
| ctl.irq = 0; |
| if (drmIoctl(fd, DRM_IOCTL_CONTROL, &ctl)) |
| return -errno; |
| return 0; |
| } |
| |
| int drmFinish(int fd, int context, drmLockFlags flags) |
| { |
| drm_lock_t lock; |
| |
| memclear(lock); |
| lock.context = context; |
| if (flags & DRM_LOCK_READY) lock.flags |= _DRM_LOCK_READY; |
| if (flags & DRM_LOCK_QUIESCENT) lock.flags |= _DRM_LOCK_QUIESCENT; |
| if (flags & DRM_LOCK_FLUSH) lock.flags |= _DRM_LOCK_FLUSH; |
| if (flags & DRM_LOCK_FLUSH_ALL) lock.flags |= _DRM_LOCK_FLUSH_ALL; |
| if (flags & DRM_HALT_ALL_QUEUES) lock.flags |= _DRM_HALT_ALL_QUEUES; |
| if (flags & DRM_HALT_CUR_QUEUES) lock.flags |= _DRM_HALT_CUR_QUEUES; |
| if (drmIoctl(fd, DRM_IOCTL_FINISH, &lock)) |
| return -errno; |
| return 0; |
| } |
| |
| /** |
| * Get IRQ from bus ID. |
| * |
| * \param fd file descriptor. |
| * \param busnum bus number. |
| * \param devnum device number. |
| * \param funcnum function number. |
| * |
| * \return IRQ number on success, or a negative value on failure. |
| * |
| * \internal |
| * This function is a wrapper around the DRM_IOCTL_IRQ_BUSID ioctl, passing the |
| * arguments in a drm_irq_busid structure. |
| */ |
| int drmGetInterruptFromBusID(int fd, int busnum, int devnum, int funcnum) |
| { |
| drm_irq_busid_t p; |
| |
| memclear(p); |
| p.busnum = busnum; |
| p.devnum = devnum; |
| p.funcnum = funcnum; |
| if (drmIoctl(fd, DRM_IOCTL_IRQ_BUSID, &p)) |
| return -errno; |
| return p.irq; |
| } |
| |
| int drmAddContextTag(int fd, drm_context_t context, void *tag) |
| { |
| drmHashEntry *entry = drmGetEntry(fd); |
| |
| if (drmHashInsert(entry->tagTable, context, tag)) { |
| drmHashDelete(entry->tagTable, context); |
| drmHashInsert(entry->tagTable, context, tag); |
| } |
| return 0; |
| } |
| |
| int drmDelContextTag(int fd, drm_context_t context) |
| { |
| drmHashEntry *entry = drmGetEntry(fd); |
| |
| return drmHashDelete(entry->tagTable, context); |
| } |
| |
| void *drmGetContextTag(int fd, drm_context_t context) |
| { |
| drmHashEntry *entry = drmGetEntry(fd); |
| void *value; |
| |
| if (drmHashLookup(entry->tagTable, context, &value)) |
| return NULL; |
| |
| return value; |
| } |
| |
| int drmAddContextPrivateMapping(int fd, drm_context_t ctx_id, |
| drm_handle_t handle) |
| { |
| drm_ctx_priv_map_t map; |
| |
| memclear(map); |
| map.ctx_id = ctx_id; |
| map.handle = (void *)(uintptr_t)handle; |
| |
| if (drmIoctl(fd, DRM_IOCTL_SET_SAREA_CTX, &map)) |
| return -errno; |
| return 0; |
| } |
| |
| int drmGetContextPrivateMapping(int fd, drm_context_t ctx_id, |
| drm_handle_t *handle) |
| { |
| drm_ctx_priv_map_t map; |
| |
| memclear(map); |
| map.ctx_id = ctx_id; |
| |
| if (drmIoctl(fd, DRM_IOCTL_GET_SAREA_CTX, &map)) |
| return -errno; |
| if (handle) |
| *handle = (drm_handle_t)(uintptr_t)map.handle; |
| |
| return 0; |
| } |
| |
| int drmGetMap(int fd, int idx, drm_handle_t *offset, drmSize *size, |
| drmMapType *type, drmMapFlags *flags, drm_handle_t *handle, |
| int *mtrr) |
| { |
| drm_map_t map; |
| |
| memclear(map); |
| map.offset = idx; |
| if (drmIoctl(fd, DRM_IOCTL_GET_MAP, &map)) |
| return -errno; |
| *offset = map.offset; |
| *size = map.size; |
| *type = map.type; |
| *flags = map.flags; |
| *handle = (unsigned long)map.handle; |
| *mtrr = map.mtrr; |
| return 0; |
| } |
| |
| int drmGetClient(int fd, int idx, int *auth, int *pid, int *uid, |
| unsigned long *magic, unsigned long *iocs) |
| { |
| drm_client_t client; |
| |
| memclear(client); |
| client.idx = idx; |
| if (drmIoctl(fd, DRM_IOCTL_GET_CLIENT, &client)) |
| return -errno; |
| *auth = client.auth; |
| *pid = client.pid; |
| *uid = client.uid; |
| *magic = client.magic; |
| *iocs = client.iocs; |
| return 0; |
| } |
| |
| int drmGetStats(int fd, drmStatsT *stats) |
| { |
| drm_stats_t s; |
| unsigned i; |
| |
| memclear(s); |
| if (drmIoctl(fd, DRM_IOCTL_GET_STATS, &s)) |
| return -errno; |
| |
| stats->count = 0; |
| memset(stats, 0, sizeof(*stats)); |
| if (s.count > sizeof(stats->data)/sizeof(stats->data[0])) |
| return -1; |
| |
| #define SET_VALUE \ |
| stats->data[i].long_format = "%-20.20s"; \ |
| stats->data[i].rate_format = "%8.8s"; \ |
| stats->data[i].isvalue = 1; \ |
| stats->data[i].verbose = 0 |
| |
| #define SET_COUNT \ |
| stats->data[i].long_format = "%-20.20s"; \ |
| stats->data[i].rate_format = "%5.5s"; \ |
| stats->data[i].isvalue = 0; \ |
| stats->data[i].mult_names = "kgm"; \ |
| stats->data[i].mult = 1000; \ |
| stats->data[i].verbose = 0 |
| |
| #define SET_BYTE \ |
| stats->data[i].long_format = "%-20.20s"; \ |
| stats->data[i].rate_format = "%5.5s"; \ |
| stats->data[i].isvalue = 0; \ |
| stats->data[i].mult_names = "KGM"; \ |
| stats->data[i].mult = 1024; \ |
| stats->data[i].verbose = 0 |
| |
| |
| stats->count = s.count; |
| for (i = 0; i < s.count; i++) { |
| stats->data[i].value = s.data[i].value; |
| switch (s.data[i].type) { |
| case _DRM_STAT_LOCK: |
| stats->data[i].long_name = "Lock"; |
| stats->data[i].rate_name = "Lock"; |
| SET_VALUE; |
| break; |
| case _DRM_STAT_OPENS: |
| stats->data[i].long_name = "Opens"; |
| stats->data[i].rate_name = "O"; |
| SET_COUNT; |
| stats->data[i].verbose = 1; |
| break; |
| case _DRM_STAT_CLOSES: |
| stats->data[i].long_name = "Closes"; |
| stats->data[i].rate_name = "Lock"; |
| SET_COUNT; |
| stats->data[i].verbose = 1; |
| break; |
| case _DRM_STAT_IOCTLS: |
| stats->data[i].long_name = "Ioctls"; |
| stats->data[i].rate_name = "Ioc/s"; |
| SET_COUNT; |
| break; |
| case _DRM_STAT_LOCKS: |
| stats->data[i].long_name = "Locks"; |
| stats->data[i].rate_name = "Lck/s"; |
| SET_COUNT; |
| break; |
| case _DRM_STAT_UNLOCKS: |
| stats->data[i].long_name = "Unlocks"; |
| stats->data[i].rate_name = "Unl/s"; |
| SET_COUNT; |
| break; |
| case _DRM_STAT_IRQ: |
| stats->data[i].long_name = "IRQs"; |
| stats->data[i].rate_name = "IRQ/s"; |
| SET_COUNT; |
| break; |
| case _DRM_STAT_PRIMARY: |
| stats->data[i].long_name = "Primary Bytes"; |
| stats->data[i].rate_name = "PB/s"; |
| SET_BYTE; |
| break; |
| case _DRM_STAT_SECONDARY: |
| stats->data[i].long_name = "Secondary Bytes"; |
| stats->data[i].rate_name = "SB/s"; |
| SET_BYTE; |
| break; |
| case _DRM_STAT_DMA: |
| stats->data[i].long_name = "DMA"; |
| stats->data[i].rate_name = "DMA/s"; |
| SET_COUNT; |
| break; |
| case _DRM_STAT_SPECIAL: |
| stats->data[i].long_name = "Special DMA"; |
| stats->data[i].rate_name = "dma/s"; |
| SET_COUNT; |
| break; |
| case _DRM_STAT_MISSED: |
| stats->data[i].long_name = "Miss"; |
| stats->data[i].rate_name = "Ms/s"; |
| SET_COUNT; |
| break; |
| case _DRM_STAT_VALUE: |
| stats->data[i].long_name = "Value"; |
| stats->data[i].rate_name = "Value"; |
| SET_VALUE; |
| break; |
| case _DRM_STAT_BYTE: |
| stats->data[i].long_name = "Bytes"; |
| stats->data[i].rate_name = "B/s"; |
| SET_BYTE; |
| break; |
| case _DRM_STAT_COUNT: |
| default: |
| stats->data[i].long_name = "Count"; |
| stats->data[i].rate_name = "Cnt/s"; |
| SET_COUNT; |
| break; |
| } |
| } |
| return 0; |
| } |
| |
| /** |
| * Issue a set-version ioctl. |
| * |
| * \param fd file descriptor. |
| * \param drmCommandIndex command index |
| * \param data source pointer of the data to be read and written. |
| * \param size size of the data to be read and written. |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * It issues a read-write ioctl given by |
| * \code DRM_COMMAND_BASE + drmCommandIndex \endcode. |
| */ |
| int drmSetInterfaceVersion(int fd, drmSetVersion *version) |
| { |
| int retcode = 0; |
| drm_set_version_t sv; |
| |
| memclear(sv); |
| sv.drm_di_major = version->drm_di_major; |
| sv.drm_di_minor = version->drm_di_minor; |
| sv.drm_dd_major = version->drm_dd_major; |
| sv.drm_dd_minor = version->drm_dd_minor; |
| |
| if (drmIoctl(fd, DRM_IOCTL_SET_VERSION, &sv)) { |
| retcode = -errno; |
| } |
| |
| version->drm_di_major = sv.drm_di_major; |
| version->drm_di_minor = sv.drm_di_minor; |
| version->drm_dd_major = sv.drm_dd_major; |
| version->drm_dd_minor = sv.drm_dd_minor; |
| |
| return retcode; |
| } |
| |
| /** |
| * Send a device-specific command. |
| * |
| * \param fd file descriptor. |
| * \param drmCommandIndex command index |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * It issues a ioctl given by |
| * \code DRM_COMMAND_BASE + drmCommandIndex \endcode. |
| */ |
| int drmCommandNone(int fd, unsigned long drmCommandIndex) |
| { |
| unsigned long request; |
| |
| request = DRM_IO( DRM_COMMAND_BASE + drmCommandIndex); |
| |
| if (drmIoctl(fd, request, NULL)) { |
| return -errno; |
| } |
| return 0; |
| } |
| |
| |
| /** |
| * Send a device-specific read command. |
| * |
| * \param fd file descriptor. |
| * \param drmCommandIndex command index |
| * \param data destination pointer of the data to be read. |
| * \param size size of the data to be read. |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * It issues a read ioctl given by |
| * \code DRM_COMMAND_BASE + drmCommandIndex \endcode. |
| */ |
| int drmCommandRead(int fd, unsigned long drmCommandIndex, void *data, |
| unsigned long size) |
| { |
| unsigned long request; |
| |
| request = DRM_IOC( DRM_IOC_READ, DRM_IOCTL_BASE, |
| DRM_COMMAND_BASE + drmCommandIndex, size); |
| |
| if (drmIoctl(fd, request, data)) { |
| return -errno; |
| } |
| return 0; |
| } |
| |
| |
| /** |
| * Send a device-specific write command. |
| * |
| * \param fd file descriptor. |
| * \param drmCommandIndex command index |
| * \param data source pointer of the data to be written. |
| * \param size size of the data to be written. |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * It issues a write ioctl given by |
| * \code DRM_COMMAND_BASE + drmCommandIndex \endcode. |
| */ |
| int drmCommandWrite(int fd, unsigned long drmCommandIndex, void *data, |
| unsigned long size) |
| { |
| unsigned long request; |
| |
| request = DRM_IOC( DRM_IOC_WRITE, DRM_IOCTL_BASE, |
| DRM_COMMAND_BASE + drmCommandIndex, size); |
| |
| if (drmIoctl(fd, request, data)) { |
| return -errno; |
| } |
| return 0; |
| } |
| |
| |
| /** |
| * Send a device-specific read-write command. |
| * |
| * \param fd file descriptor. |
| * \param drmCommandIndex command index |
| * \param data source pointer of the data to be read and written. |
| * \param size size of the data to be read and written. |
| * |
| * \return zero on success, or a negative value on failure. |
| * |
| * \internal |
| * It issues a read-write ioctl given by |
| * \code DRM_COMMAND_BASE + drmCommandIndex \endcode. |
| */ |
| int drmCommandWriteRead(int fd, unsigned long drmCommandIndex, void *data, |
| unsigned long size) |
| { |
| unsigned long request; |
| |
| request = DRM_IOC( DRM_IOC_READ|DRM_IOC_WRITE, DRM_IOCTL_BASE, |
| DRM_COMMAND_BASE + drmCommandIndex, size); |
| |
| if (drmIoctl(fd, request, data)) |
| return -errno; |
| return 0; |
| } |
| |
| #define DRM_MAX_FDS 16 |
| static struct { |
| char *BusID; |
| int fd; |
| int refcount; |
| int type; |
| } connection[DRM_MAX_FDS]; |
| |
| static int nr_fds = 0; |
| |
| 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].type == type)) { |
| connection[i].refcount++; |
| *newlyopened = 0; |
| return connection[i].fd; |
| } |
| |
| fd = drmOpenWithType(NULL, BusID, type); |
| if (fd < 0 || nr_fds == DRM_MAX_FDS) |
| return fd; |
| |
| connection[nr_fds].BusID = strdup(BusID); |
| connection[nr_fds].fd = fd; |
| connection[nr_fds].refcount = 1; |
| connection[nr_fds].type = type; |
| *newlyopened = 1; |
| |
| if (0) |
| fprintf(stderr, "saved connection %d for %s %d\n", |
| nr_fds, connection[nr_fds].BusID, |
| strcmp(BusID, connection[nr_fds].BusID)); |
| |
| nr_fds++; |
| |
| return fd; |
| } |
| |
| void drmCloseOnce(int fd) |
| { |
| int i; |
| |
| for (i = 0; i < nr_fds; i++) { |
| if (fd == connection[i].fd) { |
| if (--connection[i].refcount == 0) { |
| drmClose(connection[i].fd); |
| free(connection[i].BusID); |
| |
| if (i < --nr_fds) |
| connection[i] = connection[nr_fds]; |
| |
| return; |
| } |
| } |
| } |
| } |
| |
| int drmSetMaster(int fd) |
| { |
| return drmIoctl(fd, DRM_IOCTL_SET_MASTER, NULL); |
| } |
| |
| int drmDropMaster(int fd) |
| { |
| return drmIoctl(fd, DRM_IOCTL_DROP_MASTER, NULL); |
| } |
| |
| char *drmGetDeviceNameFromFd(int fd) |
| { |
| char name[128]; |
| struct stat sbuf; |
| dev_t d; |
| int i; |
| |
| /* The whole drmOpen thing is a fiasco and we need to find a way |
| * back to just using open(2). For now, however, lets just make |
| * things worse with even more ad hoc directory walking code to |
| * discover the device file name. */ |
| |
| fstat(fd, &sbuf); |
| d = sbuf.st_rdev; |
| |
| for (i = 0; i < DRM_MAX_MINOR; i++) { |
| snprintf(name, sizeof name, DRM_DEV_NAME, DRM_DIR_NAME, i); |
| if (stat(name, &sbuf) == 0 && sbuf.st_rdev == d) |
| break; |
| } |
| if (i == DRM_MAX_MINOR) |
| return NULL; |
| |
| return strdup(name); |
| } |
| |
| int drmGetNodeTypeFromFd(int fd) |
| { |
| struct stat sbuf; |
| int maj, min, type; |
| |
| if (fstat(fd, &sbuf)) |
| return -1; |
| |
| maj = major(sbuf.st_rdev); |
| min = minor(sbuf.st_rdev); |
| |
| if (maj != DRM_MAJOR || !S_ISCHR(sbuf.st_mode)) { |
| errno = EINVAL; |
| return -1; |
| } |
| |
| 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; |
| |
| 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; |
| } |
| |
| int drmPrimeFDToHandle(int fd, int prime_fd, uint32_t *handle) |
| { |
| struct drm_prime_handle args; |
| int ret; |
| |
| memclear(args); |
| args.fd = prime_fd; |
| ret = drmIoctl(fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &args); |
| if (ret) |
| return ret; |
| |
| *handle = args.handle; |
| return 0; |
| } |
| |
| static char *drmGetMinorNameForFD(int fd, int type) |
| { |
| #ifdef __linux__ |
| DIR *sysdir; |
| struct dirent *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; |
| |
| name_max = fpathconf(dirfd(sysdir), _PC_NAME_MAX); |
| if (name_max == -1) |
| goto out_close_dir; |
| |
| 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); |
|