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      1 /*	$NetBSD: nouveau_nvkm_engine_disp_piocnv50.c,v 1.3 2021/12/18 23:45:35 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2012 Red Hat Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: Ben Skeggs
     25  */
     26 #include <sys/cdefs.h>
     27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_engine_disp_piocnv50.c,v 1.3 2021/12/18 23:45:35 riastradh Exp $");
     28 
     29 #include "channv50.h"
     30 #include "rootnv50.h"
     31 
     32 #include <subdev/timer.h>
     33 
     34 static void
     35 nv50_disp_pioc_fini(struct nv50_disp_chan *chan)
     36 {
     37 	struct nv50_disp *disp = chan->disp;
     38 	struct nvkm_subdev *subdev = &disp->base.engine.subdev;
     39 	struct nvkm_device *device = subdev->device;
     40 	int ctrl = chan->chid.ctrl;
     41 	int user = chan->chid.user;
     42 
     43 	nvkm_mask(device, 0x610200 + (ctrl * 0x10), 0x00000001, 0x00000000);
     44 	if (nvkm_msec(device, 2000,
     45 		if (!(nvkm_rd32(device, 0x610200 + (ctrl * 0x10)) & 0x00030000))
     46 			break;
     47 	) < 0) {
     48 		nvkm_error(subdev, "ch %d timeout: %08x\n", user,
     49 			   nvkm_rd32(device, 0x610200 + (ctrl * 0x10)));
     50 	}
     51 }
     52 
     53 static int
     54 nv50_disp_pioc_init(struct nv50_disp_chan *chan)
     55 {
     56 	struct nv50_disp *disp = chan->disp;
     57 	struct nvkm_subdev *subdev = &disp->base.engine.subdev;
     58 	struct nvkm_device *device = subdev->device;
     59 	int ctrl = chan->chid.ctrl;
     60 	int user = chan->chid.user;
     61 
     62 	nvkm_wr32(device, 0x610200 + (ctrl * 0x10), 0x00002000);
     63 	if (nvkm_msec(device, 2000,
     64 		if (!(nvkm_rd32(device, 0x610200 + (ctrl * 0x10)) & 0x00030000))
     65 			break;
     66 	) < 0) {
     67 		nvkm_error(subdev, "ch %d timeout0: %08x\n", user,
     68 			   nvkm_rd32(device, 0x610200 + (ctrl * 0x10)));
     69 		return -EBUSY;
     70 	}
     71 
     72 	nvkm_wr32(device, 0x610200 + (ctrl * 0x10), 0x00000001);
     73 	if (nvkm_msec(device, 2000,
     74 		u32 tmp = nvkm_rd32(device, 0x610200 + (ctrl * 0x10));
     75 		if ((tmp & 0x00030000) == 0x00010000)
     76 			break;
     77 	) < 0) {
     78 		nvkm_error(subdev, "ch %d timeout1: %08x\n", user,
     79 			   nvkm_rd32(device, 0x610200 + (ctrl * 0x10)));
     80 		return -EBUSY;
     81 	}
     82 
     83 	return 0;
     84 }
     85 
     86 const struct nv50_disp_chan_func
     87 nv50_disp_pioc_func = {
     88 	.init = nv50_disp_pioc_init,
     89 	.fini = nv50_disp_pioc_fini,
     90 	.intr = nv50_disp_chan_intr,
     91 	.user = nv50_disp_chan_user,
     92 };
     93