drm/nouveau: expose the full object/event interfaces to userspace
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
parent
771fa0e4d0
commit
27111a23d0
9 changed files with 427 additions and 10 deletions
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@ -340,7 +340,7 @@ nouveau-y += nouveau_drm.o nouveau_chan.o nouveau_dma.o nouveau_fence.o
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nouveau-y += nouveau_vga.o nouveau_agp.o
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nouveau-y += nouveau_ttm.o nouveau_sgdma.o nouveau_bo.o nouveau_gem.o
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nouveau-y += nouveau_prime.o nouveau_abi16.o
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nouveau-y += nouveau_nvif.o
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nouveau-y += nouveau_nvif.o nouveau_usif.o
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nouveau-y += nv04_fence.o nv10_fence.o nv17_fence.o
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nouveau-y += nv50_fence.o nv84_fence.o nvc0_fence.o
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@ -50,6 +50,7 @@
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#include "nouveau_fbcon.h"
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#include "nouveau_fence.h"
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#include "nouveau_debugfs.h"
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#include "nouveau_usif.h"
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MODULE_PARM_DESC(config, "option string to pass to driver core");
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static char *nouveau_config;
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@ -107,8 +108,10 @@ nouveau_cli_create(u64 name, const char *sname,
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int ret = nvif_client_init(NULL, NULL, sname, name,
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nouveau_config, nouveau_debug,
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&cli->base);
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if (ret == 0)
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if (ret == 0) {
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mutex_init(&cli->mutex);
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usif_client_init(cli);
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}
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return ret;
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}
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return -ENOMEM;
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@ -119,6 +122,7 @@ nouveau_cli_destroy(struct nouveau_cli *cli)
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{
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nouveau_vm_ref(NULL, &nvkm_client(&cli->base)->vm, NULL);
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nvif_client_fini(&cli->base);
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usif_client_fini(cli);
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}
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static void
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@ -810,24 +814,31 @@ nouveau_ioctls[] = {
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DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_INFO, nouveau_gem_ioctl_info, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
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};
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long nouveau_drm_ioctl(struct file *filp,
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unsigned int cmd, unsigned long arg)
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long
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nouveau_drm_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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{
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struct drm_file *file_priv = filp->private_data;
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struct drm_device *dev;
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struct drm_file *filp = file->private_data;
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struct drm_device *dev = filp->minor->dev;
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long ret;
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dev = file_priv->minor->dev;
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ret = pm_runtime_get_sync(dev->dev);
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if (ret < 0 && ret != -EACCES)
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return ret;
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ret = drm_ioctl(filp, cmd, arg);
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switch (_IOC_NR(cmd) - DRM_COMMAND_BASE) {
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case DRM_NOUVEAU_NVIF:
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ret = usif_ioctl(filp, (void __user *)arg, _IOC_SIZE(cmd));
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break;
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default:
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ret = drm_ioctl(file, cmd, arg);
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break;
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}
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pm_runtime_mark_last_busy(dev->dev);
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pm_runtime_put_autosuspend(dev->dev);
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return ret;
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}
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static const struct file_operations
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nouveau_driver_fops = {
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.owner = THIS_MODULE,
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@ -9,8 +9,8 @@
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#define DRIVER_DATE "20120801"
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#define DRIVER_MAJOR 1
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#define DRIVER_MINOR 1
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#define DRIVER_PATCHLEVEL 2
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#define DRIVER_MINOR 2
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#define DRIVER_PATCHLEVEL 0
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/*
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* 1.1.1:
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@ -23,6 +23,9 @@
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* bounds access to local memory to be silently ignored / return 0).
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* 1.1.2:
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* - fixes multiple bugs in flip completion events and timestamping
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* 1.2.0:
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* - object api exposed to userspace
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* - fermi,kepler,maxwell zbc
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*/
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#include <nvif/client.h>
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@ -79,6 +82,8 @@ struct nouveau_cli {
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struct list_head head;
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struct mutex mutex;
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void *abi16;
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struct list_head objects;
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struct list_head notifys;
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};
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static inline struct nouveau_cli *
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@ -37,6 +37,7 @@
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#include <nvif/ioctl.h>
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#include "nouveau_drm.h"
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#include "nouveau_usif.h"
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static void
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nvkm_client_unmap(void *priv, void *ptr, u32 size)
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@ -95,6 +96,8 @@ nvkm_client_ntfy(const void *header, u32 length, const void *data, u32 size)
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switch (route) {
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case NVDRM_NOTIFY_NVIF:
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return nvif_notify(header, length, data, size);
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case NVDRM_NOTIFY_USIF:
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return usif_notify(header, length, data, size);
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default:
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WARN_ON(1);
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break;
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384
drivers/gpu/drm/nouveau/nouveau_usif.c
Normal file
384
drivers/gpu/drm/nouveau/nouveau_usif.c
Normal file
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@ -0,0 +1,384 @@
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/*
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* Copyright 2014 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs <bskeggs@redhat.com>
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*/
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#include "nouveau_drm.h"
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#include "nouveau_usif.h"
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#include <nvif/notify.h>
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#include <nvif/unpack.h>
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#include <nvif/client.h>
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#include <nvif/event.h>
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#include <nvif/ioctl.h>
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struct usif_notify_p {
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struct drm_pending_event base;
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struct {
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struct drm_event base;
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u8 data[];
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} e;
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};
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struct usif_notify {
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struct list_head head;
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atomic_t enabled;
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u32 handle;
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u16 reply;
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u8 route;
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u64 token;
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struct usif_notify_p *p;
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};
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static inline struct usif_notify *
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usif_notify_find(struct drm_file *filp, u32 handle)
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{
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struct nouveau_cli *cli = nouveau_cli(filp);
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struct usif_notify *ntfy;
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list_for_each_entry(ntfy, &cli->notifys, head) {
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if (ntfy->handle == handle)
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return ntfy;
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}
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return NULL;
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}
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static inline void
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usif_notify_dtor(struct usif_notify *ntfy)
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{
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list_del(&ntfy->head);
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kfree(ntfy);
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}
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int
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usif_notify(const void *header, u32 length, const void *data, u32 size)
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{
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struct usif_notify *ntfy = NULL;
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const union {
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struct nvif_notify_rep_v0 v0;
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} *rep = header;
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struct drm_device *dev;
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struct drm_file *filp;
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unsigned long flags;
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if (length == sizeof(rep->v0) && rep->v0.version == 0) {
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if (WARN_ON(!(ntfy = (void *)(unsigned long)rep->v0.token)))
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return NVIF_NOTIFY_DROP;
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BUG_ON(rep->v0.route != NVDRM_NOTIFY_USIF);
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} else
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if (WARN_ON(1))
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return NVIF_NOTIFY_DROP;
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if (WARN_ON(!ntfy->p || ntfy->reply != (length + size)))
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return NVIF_NOTIFY_DROP;
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filp = ntfy->p->base.file_priv;
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dev = filp->minor->dev;
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memcpy(&ntfy->p->e.data[0], header, length);
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memcpy(&ntfy->p->e.data[length], data, size);
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switch (rep->v0.version) {
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case 0: {
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struct nvif_notify_rep_v0 *rep = (void *)ntfy->p->e.data;
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rep->route = ntfy->route;
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rep->token = ntfy->token;
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}
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break;
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default:
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BUG_ON(1);
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break;
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}
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spin_lock_irqsave(&dev->event_lock, flags);
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if (!WARN_ON(filp->event_space < ntfy->p->e.base.length)) {
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list_add_tail(&ntfy->p->base.link, &filp->event_list);
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filp->event_space -= ntfy->p->e.base.length;
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}
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wake_up_interruptible(&filp->event_wait);
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spin_unlock_irqrestore(&dev->event_lock, flags);
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atomic_set(&ntfy->enabled, 0);
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return NVIF_NOTIFY_DROP;
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}
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static int
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usif_notify_new(struct drm_file *f, void *data, u32 size, void *argv, u32 argc)
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{
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struct nouveau_cli *cli = nouveau_cli(f);
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struct nvif_client *client = &cli->base;
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union {
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struct nvif_ioctl_ntfy_new_v0 v0;
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} *args = data;
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union {
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struct nvif_notify_req_v0 v0;
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} *req;
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struct usif_notify *ntfy;
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int ret;
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if (nvif_unpack(args->v0, 0, 0, true)) {
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if (usif_notify_find(f, args->v0.index))
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return -EEXIST;
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} else
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return ret;
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req = data;
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if (!(ntfy = kmalloc(sizeof(*ntfy), GFP_KERNEL)))
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return -ENOMEM;
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atomic_set(&ntfy->enabled, 0);
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if (nvif_unpack(req->v0, 0, 0, true)) {
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ntfy->reply = sizeof(struct nvif_notify_rep_v0) + req->v0.reply;
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ntfy->route = req->v0.route;
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ntfy->token = req->v0.token;
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req->v0.route = NVDRM_NOTIFY_USIF;
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req->v0.token = (unsigned long)(void *)ntfy;
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ret = nvif_client_ioctl(client, argv, argc);
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req->v0.token = ntfy->token;
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req->v0.route = ntfy->route;
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ntfy->handle = args->v0.index;
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}
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if (ret == 0)
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list_add(&ntfy->head, &cli->notifys);
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if (ret)
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kfree(ntfy);
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return ret;
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}
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static int
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usif_notify_del(struct drm_file *f, void *data, u32 size, void *argv, u32 argc)
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{
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struct nouveau_cli *cli = nouveau_cli(f);
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struct nvif_client *client = &cli->base;
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union {
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struct nvif_ioctl_ntfy_del_v0 v0;
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} *args = data;
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struct usif_notify *ntfy;
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int ret;
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if (nvif_unpack(args->v0, 0, 0, true)) {
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if (!(ntfy = usif_notify_find(f, args->v0.index)))
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return -ENOENT;
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} else
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return ret;
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ret = nvif_client_ioctl(client, argv, argc);
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if (ret == 0)
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usif_notify_dtor(ntfy);
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return ret;
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}
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static int
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usif_notify_get(struct drm_file *f, void *data, u32 size, void *argv, u32 argc)
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{
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struct nouveau_cli *cli = nouveau_cli(f);
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struct nvif_client *client = &cli->base;
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union {
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struct nvif_ioctl_ntfy_del_v0 v0;
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} *args = data;
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struct usif_notify *ntfy;
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int ret;
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if (nvif_unpack(args->v0, 0, 0, true)) {
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if (!(ntfy = usif_notify_find(f, args->v0.index)))
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return -ENOENT;
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} else
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return ret;
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if (atomic_xchg(&ntfy->enabled, 1))
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return 0;
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ntfy->p = kmalloc(sizeof(*ntfy->p) + ntfy->reply, GFP_KERNEL);
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if (ret = -ENOMEM, !ntfy->p)
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goto done;
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ntfy->p->base.event = &ntfy->p->e.base;
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ntfy->p->base.file_priv = f;
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ntfy->p->base.pid = current->pid;
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ntfy->p->base.destroy =(void(*)(struct drm_pending_event *))kfree;
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ntfy->p->e.base.type = DRM_NOUVEAU_EVENT_NVIF;
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ntfy->p->e.base.length = sizeof(ntfy->p->e.base) + ntfy->reply;
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ret = nvif_client_ioctl(client, argv, argc);
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done:
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if (ret) {
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atomic_set(&ntfy->enabled, 0);
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kfree(ntfy->p);
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}
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return ret;
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}
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static int
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usif_notify_put(struct drm_file *f, void *data, u32 size, void *argv, u32 argc)
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{
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struct nouveau_cli *cli = nouveau_cli(f);
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struct nvif_client *client = &cli->base;
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union {
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struct nvif_ioctl_ntfy_put_v0 v0;
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} *args = data;
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struct usif_notify *ntfy;
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int ret;
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if (nvif_unpack(args->v0, 0, 0, true)) {
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if (!(ntfy = usif_notify_find(f, args->v0.index)))
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return -ENOENT;
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} else
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return ret;
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ret = nvif_client_ioctl(client, argv, argc);
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if (ret == 0 && atomic_xchg(&ntfy->enabled, 0))
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kfree(ntfy->p);
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return ret;
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}
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struct usif_object {
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struct list_head head;
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struct list_head ntfy;
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u8 route;
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u64 token;
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};
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static void
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usif_object_dtor(struct usif_object *object)
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{
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list_del(&object->head);
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kfree(object);
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}
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static int
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usif_object_new(struct drm_file *f, void *data, u32 size, void *argv, u32 argc)
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{
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struct nouveau_cli *cli = nouveau_cli(f);
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struct nvif_client *client = &cli->base;
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union {
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struct nvif_ioctl_new_v0 v0;
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} *args = data;
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struct usif_object *object;
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int ret;
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if (!(object = kmalloc(sizeof(*object), GFP_KERNEL)))
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return -ENOMEM;
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list_add(&object->head, &cli->objects);
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if (nvif_unpack(args->v0, 0, 0, true)) {
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object->route = args->v0.route;
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object->token = args->v0.token;
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args->v0.route = NVDRM_OBJECT_USIF;
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args->v0.token = (unsigned long)(void *)object;
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ret = nvif_client_ioctl(client, argv, argc);
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args->v0.token = object->token;
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args->v0.route = object->route;
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}
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if (ret)
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usif_object_dtor(object);
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return ret;
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}
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int
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usif_ioctl(struct drm_file *filp, void __user *user, u32 argc)
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{
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struct nouveau_cli *cli = nouveau_cli(filp);
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struct nvif_client *client = &cli->base;
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void *data = kmalloc(argc, GFP_KERNEL);
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u32 size = argc;
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union {
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struct nvif_ioctl_v0 v0;
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} *argv = data;
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struct usif_object *object;
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u8 owner;
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int ret;
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if (ret = -ENOMEM, !argv)
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goto done;
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if (ret = -EFAULT, copy_from_user(argv, user, size))
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goto done;
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if (nvif_unpack(argv->v0, 0, 0, true)) {
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/* block access to objects not created via this interface */
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owner = argv->v0.owner;
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argv->v0.owner = NVDRM_OBJECT_USIF;
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} else
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goto done;
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mutex_lock(&cli->mutex);
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switch (argv->v0.type) {
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case NVIF_IOCTL_V0_NEW:
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/* ... except if we're creating children */
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argv->v0.owner = NVIF_IOCTL_V0_OWNER_ANY;
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ret = usif_object_new(filp, data, size, argv, argc);
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break;
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case NVIF_IOCTL_V0_NTFY_NEW:
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ret = usif_notify_new(filp, data, size, argv, argc);
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break;
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case NVIF_IOCTL_V0_NTFY_DEL:
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ret = usif_notify_del(filp, data, size, argv, argc);
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||||
break;
|
||||
case NVIF_IOCTL_V0_NTFY_GET:
|
||||
ret = usif_notify_get(filp, data, size, argv, argc);
|
||||
break;
|
||||
case NVIF_IOCTL_V0_NTFY_PUT:
|
||||
ret = usif_notify_put(filp, data, size, argv, argc);
|
||||
break;
|
||||
default:
|
||||
ret = nvif_client_ioctl(client, argv, argc);
|
||||
break;
|
||||
}
|
||||
if (argv->v0.route == NVDRM_OBJECT_USIF) {
|
||||
object = (void *)(unsigned long)argv->v0.token;
|
||||
argv->v0.route = object->route;
|
||||
argv->v0.token = object->token;
|
||||
if (ret == 0 && argv->v0.type == NVIF_IOCTL_V0_DEL) {
|
||||
list_del(&object->head);
|
||||
kfree(object);
|
||||
}
|
||||
} else {
|
||||
argv->v0.route = NVIF_IOCTL_V0_ROUTE_HIDDEN;
|
||||
argv->v0.token = 0;
|
||||
}
|
||||
argv->v0.owner = owner;
|
||||
mutex_unlock(&cli->mutex);
|
||||
|
||||
if (copy_to_user(user, argv, argc))
|
||||
ret = -EFAULT;
|
||||
done:
|
||||
kfree(argv);
|
||||
return ret;
|
||||
}
|
||||
|
||||
void
|
||||
usif_client_fini(struct nouveau_cli *cli)
|
||||
{
|
||||
struct usif_object *object, *otemp;
|
||||
struct usif_notify *notify, *ntemp;
|
||||
|
||||
list_for_each_entry_safe(notify, ntemp, &cli->notifys, head) {
|
||||
usif_notify_dtor(notify);
|
||||
}
|
||||
|
||||
list_for_each_entry_safe(object, otemp, &cli->objects, head) {
|
||||
usif_object_dtor(object);
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
usif_client_init(struct nouveau_cli *cli)
|
||||
{
|
||||
INIT_LIST_HEAD(&cli->objects);
|
||||
INIT_LIST_HEAD(&cli->notifys);
|
||||
}
|
9
drivers/gpu/drm/nouveau/nouveau_usif.h
Normal file
9
drivers/gpu/drm/nouveau/nouveau_usif.h
Normal file
|
@ -0,0 +1,9 @@
|
|||
#ifndef __NOUVEAU_USIF_H__
|
||||
#define __NOUVEAU_USIF_H__
|
||||
|
||||
void usif_client_init(struct nouveau_cli *);
|
||||
void usif_client_fini(struct nouveau_cli *);
|
||||
int usif_ioctl(struct drm_file *, void __user *, u32);
|
||||
int usif_notify(const void *, u32, const void *, u32);
|
||||
|
||||
#endif
|
|
@ -60,6 +60,7 @@ nvif_drivers[] = {
|
|||
#ifdef __KERNEL__
|
||||
&nvif_driver_nvkm,
|
||||
#else
|
||||
&nvif_driver_drm,
|
||||
&nvif_driver_lib,
|
||||
#endif
|
||||
NULL
|
||||
|
|
|
@ -15,6 +15,7 @@ struct nvif_driver {
|
|||
};
|
||||
|
||||
extern const struct nvif_driver nvif_driver_nvkm;
|
||||
extern const struct nvif_driver nvif_driver_drm;
|
||||
extern const struct nvif_driver nvif_driver_lib;
|
||||
|
||||
#endif
|
||||
|
|
|
@ -25,6 +25,8 @@
|
|||
#ifndef __NOUVEAU_DRM_H__
|
||||
#define __NOUVEAU_DRM_H__
|
||||
|
||||
#define DRM_NOUVEAU_EVENT_NVIF 0x80000000
|
||||
|
||||
/* reserved object handles when using deprecated object APIs - these
|
||||
* are here so that libdrm can allow interoperability with the new
|
||||
* object APIs
|
||||
|
@ -131,6 +133,7 @@ struct drm_nouveau_gem_cpu_fini {
|
|||
#define DRM_NOUVEAU_GROBJ_ALLOC 0x04 /* deprecated */
|
||||
#define DRM_NOUVEAU_NOTIFIEROBJ_ALLOC 0x05 /* deprecated */
|
||||
#define DRM_NOUVEAU_GPUOBJ_FREE 0x06 /* deprecated */
|
||||
#define DRM_NOUVEAU_NVIF 0x07
|
||||
#define DRM_NOUVEAU_GEM_NEW 0x40
|
||||
#define DRM_NOUVEAU_GEM_PUSHBUF 0x41
|
||||
#define DRM_NOUVEAU_GEM_CPU_PREP 0x42
|
||||
|
|
Loading…
Reference in a new issue