subdev/bar/g84.c

0001 /*
0002  * Copyright 2015 Red Hat Inc.
0003  *
0004  * Permission is hereby granted, free of charge, to any person obtaining a
0005  * copy of this software and associated documentation files (the "Software"),
0006  * to deal in the Software without restriction, including without limitation
0007  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
0008  * and/or sell copies of the Software, and to permit persons to whom the
0009  * Software is furnished to do so, subject to the following conditions:
0010  *
0011  * The above copyright notice and this permission notice shall be included in
0012  * all copies or substantial portions of the Software.
0013  *
0014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
0017  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
0018  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
0019  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
0020  * OTHER DEALINGS IN THE SOFTWARE.
0021  *
0022  * Authors: Ben Skeggs <bskeggs@redhat.com>
0023  */
0024 #include "nv50.h"
0025
0026 #include <subdev/timer.h>
0027
0028 void
0029 g84_bar_flush(struct nvkm_bar *bar)
0030 {
0031     struct nvkm_device *device = bar->subdev.device;
0032     unsigned long flags;
0033     spin_lock_irqsave(&bar->lock, flags);
0034     nvkm_wr32(device, 0x070000, 0x00000001);
0035     nvkm_msec(device, 2000,
0036         if (!(nvkm_rd32(device, 0x070000) & 0x00000002))
0037             break;
0038     );
0039     spin_unlock_irqrestore(&bar->lock, flags);
0040 }
0041
0042 static const struct nvkm_bar_func
0043 g84_bar_func = {
0044     .dtor = nv50_bar_dtor,
0045     .oneinit = nv50_bar_oneinit,
0046     .init = nv50_bar_init,
0047     .bar1.init = nv50_bar_bar1_init,
0048     .bar1.fini = nv50_bar_bar1_fini,
0049     .bar1.wait = nv50_bar_bar1_wait,
0050     .bar1.vmm = nv50_bar_bar1_vmm,
0051     .bar2.init = nv50_bar_bar2_init,
0052     .bar2.fini = nv50_bar_bar2_fini,
0053     .bar2.wait = nv50_bar_bar1_wait,
0054     .bar2.vmm = nv50_bar_bar2_vmm,
0055     .flush = g84_bar_flush,
0056 };
0057
0058 int
0059 g84_bar_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
0060         struct nvkm_bar **pbar)
0061 {
0062     return nv50_bar_new_(&g84_bar_func, device, type, inst, 0x200, pbar);
0063 }