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author | Ben Skeggs <bskeggs@redhat.com> | 2014-08-10 04:10:21 +1000 |
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committer | Ben Skeggs <bskeggs@redhat.com> | 2014-08-10 04:43:28 +1000 |
commit | b7c81f0355379b9d0fcdf624a8df1b7119f28efc (patch) | |
tree | 21c37810cbdc088158e06ee75ee303a4af99d0f2 /nvif/device.c | |
parent | c0368d5441d90c6a2ac0583d7d2144c6d6baab8c (diff) | |
download | nouveau-b7c81f0355379b9d0fcdf624a8df1b7119f28efc.tar.gz |
nvif: import library functions for the ioctl/event interfaces
This is a wrapper around the interfaces defined in an earlier commit,
and is also used by various userspace (either by a libdrm backend, or
libpciaccess) tools/tests.
In the future this will be extended to handle channels, replacing some
long-unloved code we currently use, and allow fifo/display/mpeg (hi
Ilia ;)) engines to all be exposed in the same way.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'nvif/device.c')
-rw-r--r-- | nvif/device.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/nvif/device.c b/nvif/device.c new file mode 100644 index 000000000..f47757972 --- /dev/null +++ b/nvif/device.c @@ -0,0 +1,78 @@ +/* + * Copyright 2014 Red Hat Inc. + * + * 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 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 + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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. + * + * Authors: Ben Skeggs <bskeggs@redhat.com> + */ + +#include "device.h" + +void +nvif_device_fini(struct nvif_device *device) +{ + nvif_object_fini(&device->base); +} + +int +nvif_device_init(struct nvif_object *parent, void (*dtor)(struct nvif_device *), + u32 handle, u32 oclass, void *data, u32 size, + struct nvif_device *device) +{ + int ret = nvif_object_init(parent, (void *)dtor, handle, oclass, + data, size, &device->base); + if (ret == 0) { + device->object = &device->base; + device->info.version = 0; + ret = nvif_object_mthd(&device->base, NV_DEVICE_V0_INFO, + &device->info, sizeof(device->info)); + } + return ret; +} + +static void +nvif_device_del(struct nvif_device *device) +{ + nvif_device_fini(device); + kfree(device); +} + +int +nvif_device_new(struct nvif_object *parent, u32 handle, u32 oclass, + void *data, u32 size, struct nvif_device **pdevice) +{ + struct nvif_device *device = kzalloc(sizeof(*device), GFP_KERNEL); + if (device) { + int ret = nvif_device_init(parent, nvif_device_del, handle, + oclass, data, size, device); + if (ret) { + kfree(device); + device = NULL; + } + *pdevice = device; + return ret; + } + return -ENOMEM; +} + +void +nvif_device_ref(struct nvif_device *device, struct nvif_device **pdevice) +{ + nvif_object_ref(&device->base, (struct nvif_object **)pdevice); +} |