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, enum nvkm_subdev_type type, int inst, 60 struct nvkm_bar **pbar) 61 { 62 return nv50_bar_new_(&g84_bar_func, device, type, inst, 0x200, pbar); 63 } 64