ARM SoCs usually have their DRM/KMS devices on the platform bus, so add
support for that to enable these devices to be used with the drmDevice
infrastructure.
NVIDIA Tegra SoCs have an additional level in the hierarchy and DRM/KMS
devices can also be on the host1x bus. This is mostly equivalent to the
platform bus.
v4:
- continue on error to process platform or host1x device
v3:
- guard Linux-specific sysfs parsing code with #ifdef __linux__
v2:
- be careful not to overflow the full name
- read compatible strings into device info
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Allow DRM/KMS devices hosted on USB to be detected by the drmDevice
infrastructure.
v4:
- continue on error to process USB devices
v3:
- guard Linux-specific sysfs parsing code with #ifdef __linux__
v2:
- make sysfs_uevent_get() more flexible using a format string
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Subsequent patches will add support for other bus types to drmDevice and
they will duplicate a lot of the code to allocate a drmDevice. Factor
out the common code so it can be reused.
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
The string written to the buffer by read() is not null-terminated,
but currently drmParsePciBusInfo() places null character only at the end of the buffer, not at the end of the
string.
As a result, the string passed to sscanf() contains an uninitialized value.
This patch changes to places null character at the end of the string.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99045
Signed-off-by: Taro Yamada <archer_ame@yahoo.co.jp>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
libdrm uses spaces for indentation. Fix the two inconsistent lines in
this file.
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
When iterating over all the device nodes if drmProcessPciDevice()
returned an error for any node the function would return an error,
ignoring any valid nodes.
The result of this on OpenBSD where drmProcessPciDevice() results in
device nodes being opened to issue ioctls to get pci data
was that data obtained from /dev/drm0 would be ignored if /dev/drm1
could not be opened.
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Implement a generic drmGetDeviceNameFromFd2() to use on non-linux
systems without sysfs.
v2: remove min < base test as requested by Emil
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
When constructing a path to a device node the minor number retrieved
from fstat needs to have the offset of the node type subtracted from it.
Control and render node types have the same major as the primary node
but each has their own block of minor types at fixed offsets.
v2: remove min < base test as requested by Emil
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
xf86drm.c:3601:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
while (expected < sizeof(match)) {
^
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
DRI devices on OpenBSD are not in their own directory. They reside in
/dev with a large number of statically generated /dev nodes.
Avoid stat'ing all of /dev on OpenBSD by implementing this custom path.
v2:
- use drmGetMinorType to get node type
- adapt to drmProcessPciDevice changes
- verify drmParseSubsystemType type is PCI
- add a comment describing why this was added
Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Implement drmParsePciBusInfo for OpenBSD by using the new
DRM_IOCTL_GET_PCIINFO ioctl.
v2: use drmGetMinorType to get node type instead of always
using DRM_NODE_PRIMARY.
Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Implement drmParsePciDeviceInfo for OpenBSD by using the new
DRM_IOCTL_GET_PCIINFO ioctl.
v2: adapt to drmParsePciDeviceInfo changes and use drmOpenMinor
Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Implement drmParseSubsystemType for OpenBSD by always returning
DRM_BUS_PCI. No non-pci drm drivers are in the kernel and this is
unlikely to change anytime soon as the existing ones aren't permissively
licensed.
Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Implement drmGetMinorNameForFD for systems without sysfs by
adapting drm_get_device_name_for_fd() from the Mesa loader.
v2: use type parameter to select dev name instead of always
using DRM_DEV_NAME
Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Relative to the original version, here one can provide a flags bitmask.
Currently only DRM_DEVICE_IGNORE_PCI_REVISION is supported.
Implementation detail:
If it's set, we will only parse the separate sysfs files and we won't
touch the config one. The latter awakes the device (causing delays)
which is the core reason why this API was introduced.
v2:
- Initialize revision to 0xff if it's unread.
- Change DRM_DEVICE_IGNORE_PCI_REVISION to DRM_DEVICE_GET_PCI_REVISION
- Add explicit note that drmGetDevice[s]2 does not retrieve the
revision by default.
v3:
- Correctly fold drmParsePciDeviceInfo() hunk in this patch.
Cc: Michel Dänzer <michel@daenzer.net>
Cc: Nicolai Hähnle <nhaehnle@gmail.com>
Cc: Mauro Santos <registo.mailling@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98502
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Up-to recently (patch should land in 4.10) the kernel did not expose the
PCI device revision field as a separate sysfs file.
Thus one needed too parse the config file to retrieve it. This in
itself wakes up the device, which in some cases can be quite slow.
To avoid that, just check for the separate files and fall-back to the
original if kernel is not new enough.
v3: rework alongside drmGetDevice[s]2
Cc: Michel Dänzer <michel@daenzer.net>
Cc: Nicolai Hähnle <nhaehnle@gmail.com>
Cc: Mauro Santos <registo.mailling@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98502
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Will be used with the drmGetDevice[s]2 API.
Cc: Michel Dänzer <michel@daenzer.net>
Cc: Nicolai Hähnle <nhaehnle@gmail.com>
Cc: Mauro Santos <registo.mailling@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98502
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Be consistent with drmParsePciBusInfo() and use solely the device
major/minor pair.
Cc: Jonathan Gray <jsg@jsg.id.au>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
The original version considered only card devices, while this will pick
the device/node name regardless - card, control, renderD, other...
Current implementation is "linux" specific, in such that it relies on
sysfs/uevent file. At the same time this gives us the flexibility to
support any nodes even future ones, as long as they're within DRM_MAJOR.
Shamelessly copied from mesa, latter by: Gary Wong <gtw@gnu.org>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Some platforms (such as Macs using OF) can have more information in the
uevent file thus reading only the first 128 might not be sufficient.
Bump it to 512, which "should be enough for everybody" ;-)
v2: Use sizeof(data)-1 over hardcoded number (Eric).
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98629
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reported-by: Mingcong Bai <jeffbai@aosc.xyz>
Tested-by: Mingcong Bai <jeffbai@aosc.xyz> (v1)
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
glxgears was spamming this 12 times at startup because of Mesa's
probing of the DRM device code, which doesn't support platform
devices.
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Fixes crashes in Mesa on platform devices, which expected *device to
have a device when 0 was returned.
(code from a paste by Rob, commit message by anholt)
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
When in multi GPU case, devices array may have some
NULL "hole" in between two devices. So check all
array elements and free non-NULL device.
Signed-off-by: Qiang Yu <Qiang.Yu@amd.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Currently drmGetDevice always returns the first device it finds under
/dev/dri/.
Move the target device to the start of the list during iteration. This
way during deduplication it'll preserve its place and will be returned
to the user.
v2: Keep the memory leak separate.
v3: Move the drmFoldDuplicatedDevices description
Signed-off-by: Qiang Yu <Qiang.Yu@amd.com>
[Emil Velikov: move drmFoldDuplicatedDevices description, add
changelog, reword commit message]
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
This header provides major/minor/makedev funcs under most Linux C
libs. Pull it in to fix building with newer versions that drop the
implicit include via sys/types.h.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94231
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Previously, (*device)->businfo.pci would end up misaligned, which results
in undefined behavior.
Signed-off-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
When multi GPU present, after drmFoldDuplicatedDevices
merge same busid deveces, two different devices may be
seperated by zero in local_devices[]. The for loop
should check all local_devices instead of exit when
meet a zero.
Reviewed-by: Jim Qu <Jim.Qu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Qiang Yu <Qiang.Yu@amd.com>
We are reading at most sizeof(data) bytes, but then data may not contain
a terminating '\0', at least in theory, so strstr() may overflow the
stack allocated array.
Make sure that data always contains at least one '\0'.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Both drmGetDevice() and drmGetDevices() currently print a warning when
they encounter an unknown (non-PCI) subsystem type for a device node,
but they still proceed to assume that the drmDevicePtr was initialized
and try to add it to the local device array. Add a 'continue' to the
error case handling to bypass the rest of the processing for devices we
can't handle.
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Some of the error conditions in drmGetDevice() can lead to us calling
closedir(NULL) or leaking memory. Fix these conditions the same way we
did for drmGetDevices() in commit:
commit 8c4a1cbd98
Author: Matt Roper <matthew.d.roper@intel.com>
Date: Wed Sep 30 09:30:51 2015 -0700
xf86drm: Fix error handling for drmGetDevices()
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Arithmetic on void pointers is a GCC extension.
CC libdrm_la-xf86drm.lo
../xf86drm.c: In function 'drmProcessPciDevice':
../xf86drm.c:3017:10: warning: pointer of type 'void *' used in arithmetic [-Wpointer-arith]
addr += sizeof(drmDevice);
^
../xf86drm.c:3020:10: warning: pointer of type 'void *' used in arithmetic [-Wpointer-arith]
addr += DRM_NODE_MAX * sizeof(void *);
^
../xf86drm.c:3023:14: warning: pointer of type 'void *' used in arithmetic [-Wpointer-arith]
addr += max_node_str;
^
../xf86drm.c:3035:14: warning: pointer of type 'void *' used in arithmetic [-Wpointer-arith]
addr += sizeof(drmPciBusInfo);
^
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
If the opendir() call in drmGetDevices() returns failure, we jump to an
error label that calls closedir() and then returns. However this means
that we're calling closedir(NULL) which may not be safe on all
implementations. We are also leaking the local_devices array that was
allocated before the opendir() call.
Fix both of these issues by jumping to an earlier error label (to free
local_devices) and guarding the closedir() call with a NULL test.
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
[Emil Velikov: make the teardown symmetrical, remove the NULL check]
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
fixes compilation error with musl libc and Solaris based platforms.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92082
Signed-off-by: Felix Janda <felix.janda@posteo.de>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Back when this was introduced commit 569da5a42eb(Merged glxmisc-3-0-0)
sys/sysmacros.h was used instead of the respecive headers (as per the
manual).
We've been handling it correctly for a little while now - in Linux, BSD
and Solaris. Thus we can drop this workaround.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Similar interface to the *Devices() ones but they obtain/free the
information of the opened device (as given by its fd).
Note there is a fair bit of duplication between the two Get functions,
and anyone interested is more than welcome to consolidate it.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Do a once off memory allocation for each drmDevice.
This allows us to ease the error handling and simplify the
de-duplication loop. As part of this we need to rework drmFreeDevice()
such so that it frees the relevant hunks, rather than leaving that to
the caller.
Some memory stats from the drmdevice test
before: 22 allocs, 22 frees, 66,922 bytes allocated
after: 9 allocs, 9 frees, 66,436 bytes allocated
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Move away form the boolean name, change the return value
appropriately and check if either argument is NULL.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Third and final piece of making drmGetDevices less crazy/ugly.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
As with previous commit let's try to keep drmGetDevices clean of linux
specifics.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
This will allow one to reuse the core drmGetDevices implementation on
other platforms. Keeping all the platform specifics in ParseFoo.
On the plus side this saves a bit of code :)
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
For android / drm_gralloc, we want to hook up our own debug_print()
without bothering with the reset of it.
Signed-off-by: Rob Clark <robdclark@gmail.com>
For mutiple GPU support, the devices on the system should be enumerated
to get necessary information about each device, and the drmGetDevices
interface is added for this. Currently only PCI devices are supported for
the enumeration.
Typical usage:
int count;
drmDevicePtr *foo;
count = drmGetDevices(NULL, 0);
foo = calloc(count, sizeof(drmDevicePtr));
count = drmGetDevices(foo, count);
/* find proper device, open correct device node, etc */
drmFreeDevices(foo, count);
free(foo);
v2: [Jammy Zhou]
- return a list of devices, rather than nodes
v3: [Jammy Zhou]
- fix the signed extension for PCI device info
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
For readdir_r(), the next directory entry is returned in caller-allocted
buffer (pointered by pent here).
https://bugs.freedesktop.org/show_bug.cgi?id=91704
Signed-off-by: Mathias Tillman <master.homer@gmail.com>
Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Add defines for the device minor names and make use of them
in drmGetMinorName() so the correct paths will be used on OpenBSD.
v2: don't add new defines to xf86drm.h to keep them out of the API
as requested by Emil.
Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
As far as I can tell no OpenBSD platform ever used 81
for a drm major. While the value was added to libdrm in 2003
or earlier drm didn't appear in OpenBSD till 2007.
Of the OpenBSD platforms that support drm amd64/macppc/sparc64
use a major of 87, i386 uses 88.
v2: rearrange ifdefs as suggested by Emil.
Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Thierry Reding
Thierry Reding
Taro Yamada
Jonathan Gray
Grazvydas Ignotas
Emil Velikov
Eric Anholt
Rob Herring
Qiang Yu
Mike Frysinger
Jan Vesely
Nicolai Hähnle
Eric Engestrom
Damien Lespiau
Matt Roper
Michel Dänzer
Felix Janda
Emil Velikov
Rob Clark
Mathias Tillman