LXR linux/drivers/gpu/drm/nouveau/nvif/client.c

   1/*
   2 * Copyright 2013 Red Hat Inc.
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice shall be included in
  12 * all copies or substantial portions of the Software.
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20 * OTHER DEALINGS IN THE SOFTWARE.
  21 *
  22 * Authors: Ben Skeggs <bskeggs@redhat.com>
  23 */
  24
  25#include <nvif/client.h>
  26#include <nvif/driver.h>
  27#include <nvif/ioctl.h>
  28
  29#include <nvif/class.h>
  30#include <nvif/if0000.h>
  31
  32int
  33nvif_client_ioctl(struct nvif_client *client, void *data, u32 size)
  34{
  35        return client->driver->ioctl(client->object.priv, data, size, NULL);
  36}
  37
  38int
  39nvif_client_suspend(struct nvif_client *client)
  40{
  41        return client->driver->suspend(client->object.priv);
  42}
  43
  44int
  45nvif_client_resume(struct nvif_client *client)
  46{
  47        return client->driver->resume(client->object.priv);
  48}
  49
  50void
  51nvif_client_dtor(struct nvif_client *client)
  52{
  53        nvif_object_dtor(&client->object);
  54        if (client->driver) {
  55                if (client->driver->fini)
  56                        client->driver->fini(client->object.priv);
  57                client->driver = NULL;
  58        }
  59}
  60
  61int
  62nvif_client_ctor(struct nvif_client *parent, const char *name, u64 device,
  63                 struct nvif_client *client)
  64{
  65        struct nvif_client_v0 args = { .device = device };
  66        struct {
  67                struct nvif_ioctl_v0 ioctl;
  68                struct nvif_ioctl_nop_v0 nop;
  69        } nop = {};
  70        int ret;
  71
  72        strncpy(args.name, name, sizeof(args.name));
  73        ret = nvif_object_ctor(parent != client ? &parent->object : NULL,
  74                               name ? name : "nvifClient", 0,
  75                               NVIF_CLASS_CLIENT, &args, sizeof(args),
  76                               &client->object);
  77        if (ret)
  78                return ret;
  79
  80        client->object.client = client;
  81        client->object.handle = ~0;
  82        client->route = NVIF_IOCTL_V0_ROUTE_NVIF;
  83        client->driver = parent->driver;
  84
  85        if (ret == 0) {
  86                ret = nvif_client_ioctl(client, &nop, sizeof(nop));
  87                client->version = nop.nop.version;
  88        }
  89
  90        if (ret)
  91                nvif_client_dtor(client);
  92        return ret;
  93}
  94