1 /*
2 * Copyright 2015 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 #include "nv50.h"
25
26 #include <subdev/timer.h>
27
28 void
29 g84_bar_flush(struct nvkm_bar *bar)
30 {
31 struct nvkm_device *device = bar->subdev.device;
32 unsigned long flags;
33 spin_lock_irqsave(&bar->lock, flags);
34 nvkm_wr32(device, 0x070000, 0x00000001);
35 nvkm_msec(device, 2000,
36 if (!(nvkm_rd32(device, 0x070000) & 0x00000002))
37 break;
38 );
39 spin_unlock_irqrestore(&bar->lock, flags);
40 }
41
42 static const struct nvkm_bar_func
43 g84_bar_func = {
44 .dtor = nv50_bar_dtor,
45 .oneinit = nv50_bar_oneinit,
46 .init = nv50_bar_init,
47 .bar1.init = nv50_bar_bar1_init,
48 .bar1.fini = nv50_bar_bar1_fini,
49 .bar1.wait = nv50_bar_bar1_wait,
50 .bar1.vmm = nv50_bar_bar1_vmm,
51 .bar2.init = nv50_bar_bar2_init,
52 .bar2.fini = nv50_bar_bar2_fini,
53 .bar2.wait = nv50_bar_bar1_wait,
54 .bar2.vmm = nv50_bar_bar2_vmm,
55 .flush = g84_bar_flush,
56 };
57
58 int
59 g84_bar_new(struct nvkm_device *device, int index, struct nvkm_bar **pbar)
60 {
61 return nv50_bar_new_(&g84_bar_func, device, index, 0x200, pbar);
62 }