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      1 /*	$NetBSD: nouveau_nvkm_engine_disp_dmacgf119.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_dmacgf119.c,v 1.3 2021/12/18 23:45:35 riastradh Exp $");
     28 
     29 #include "channv50.h"
     30 
     31 #include <core/ramht.h>
     32 #include <subdev/timer.h>
     33 
     34 int
     35 gf119_disp_dmac_bind(struct nv50_disp_chan *chan,
     36 		     struct nvkm_object *object, u32 handle)
     37 {
     38 	return nvkm_ramht_insert(chan->disp->ramht, object,
     39 				 chan->chid.user, -9, handle,
     40 				 chan->chid.user << 27 | 0x00000001);
     41 }
     42 
     43 void
     44 gf119_disp_dmac_fini(struct nv50_disp_chan *chan)
     45 {
     46 	struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
     47 	struct nvkm_device *device = subdev->device;
     48 	int ctrl = chan->chid.ctrl;
     49 	int user = chan->chid.user;
     50 
     51 	/* deactivate channel */
     52 	nvkm_mask(device, 0x610490 + (ctrl * 0x0010), 0x00001010, 0x00001000);
     53 	nvkm_mask(device, 0x610490 + (ctrl * 0x0010), 0x00000003, 0x00000000);
     54 	if (nvkm_msec(device, 2000,
     55 		if (!(nvkm_rd32(device, 0x610490 + (ctrl * 0x10)) & 0x001e0000))
     56 			break;
     57 	) < 0) {
     58 		nvkm_error(subdev, "ch %d fini: %08x\n", user,
     59 			   nvkm_rd32(device, 0x610490 + (ctrl * 0x10)));
     60 	}
     61 }
     62 
     63 static int
     64 gf119_disp_dmac_init(struct nv50_disp_chan *chan)
     65 {
     66 	struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
     67 	struct nvkm_device *device = subdev->device;
     68 	int ctrl = chan->chid.ctrl;
     69 	int user = chan->chid.user;
     70 
     71 	/* initialise channel for dma command submission */
     72 	nvkm_wr32(device, 0x610494 + (ctrl * 0x0010), chan->push);
     73 	nvkm_wr32(device, 0x610498 + (ctrl * 0x0010), 0x00010000);
     74 	nvkm_wr32(device, 0x61049c + (ctrl * 0x0010), 0x00000001);
     75 	nvkm_mask(device, 0x610490 + (ctrl * 0x0010), 0x00000010, 0x00000010);
     76 	nvkm_wr32(device, 0x640000 + (ctrl * 0x1000), 0x00000000);
     77 	nvkm_wr32(device, 0x610490 + (ctrl * 0x0010), 0x00000013);
     78 
     79 	/* wait for it to go inactive */
     80 	if (nvkm_msec(device, 2000,
     81 		if (!(nvkm_rd32(device, 0x610490 + (ctrl * 0x10)) & 0x80000000))
     82 			break;
     83 	) < 0) {
     84 		nvkm_error(subdev, "ch %d init: %08x\n", user,
     85 			   nvkm_rd32(device, 0x610490 + (ctrl * 0x10)));
     86 		return -EBUSY;
     87 	}
     88 
     89 	return 0;
     90 }
     91 
     92 const struct nv50_disp_chan_func
     93 gf119_disp_dmac_func = {
     94 	.init = gf119_disp_dmac_init,
     95 	.fini = gf119_disp_dmac_fini,
     96 	.intr = gf119_disp_chan_intr,
     97 	.user = nv50_disp_chan_user,
     98 	.bind = gf119_disp_dmac_bind,
     99 };
    100