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      1 /*	$NetBSD: nouveau_dispnv50_wimmc37b.c,v 1.2 2021/12/18 23:45:32 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2018 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 #include <sys/cdefs.h>
     25 __KERNEL_RCSID(0, "$NetBSD: nouveau_dispnv50_wimmc37b.c,v 1.2 2021/12/18 23:45:32 riastradh Exp $");
     26 
     27 #include "wimm.h"
     28 #include "atom.h"
     29 #include "wndw.h"
     30 
     31 #include <nvif/clc37b.h>
     32 
     33 static void
     34 wimmc37b_update(struct nv50_wndw *wndw, u32 *interlock)
     35 {
     36 	u32 *push;
     37 	if ((push = evo_wait(&wndw->wimm, 2))) {
     38 		evo_mthd(push, 0x0200, 1);
     39 		if (interlock[NV50_DISP_INTERLOCK_WNDW] & wndw->interlock.data)
     40 			evo_data(push, 0x00000003);
     41 		else
     42 			evo_data(push, 0x00000001);
     43 		evo_kick(push, &wndw->wimm);
     44 	}
     45 }
     46 
     47 static void
     48 wimmc37b_point(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw)
     49 {
     50 	u32 *push;
     51 	if ((push = evo_wait(&wndw->wimm, 2))) {
     52 		evo_mthd(push, 0x0208, 1);
     53 		evo_data(push, asyw->point.y << 16 | asyw->point.x);
     54 		evo_kick(push, &wndw->wimm);
     55 	}
     56 }
     57 
     58 static const struct nv50_wimm_func
     59 wimmc37b = {
     60 	.point = wimmc37b_point,
     61 	.update = wimmc37b_update,
     62 };
     63 
     64 static int
     65 wimmc37b_init_(const struct nv50_wimm_func *func, struct nouveau_drm *drm,
     66 	       s32 oclass, struct nv50_wndw *wndw)
     67 {
     68 	struct nvc37b_window_imm_channel_dma_v0 args = {
     69 		.pushbuf = 0xb0007b00 | wndw->id,
     70 		.index = wndw->id,
     71 	};
     72 	struct nv50_disp *disp = nv50_disp(drm->dev);
     73 	int ret;
     74 
     75 	ret = nv50_dmac_create(&drm->client.device, &disp->disp->object,
     76 			       &oclass, 0, &args, sizeof(args), 0,
     77 			       &wndw->wimm);
     78 	if (ret) {
     79 		NV_ERROR(drm, "wimm%04x allocation failed: %d\n", oclass, ret);
     80 		return ret;
     81 	}
     82 
     83 	wndw->interlock.wimm = wndw->interlock.data;
     84 	wndw->immd = func;
     85 	return 0;
     86 }
     87 
     88 int
     89 wimmc37b_init(struct nouveau_drm *drm, s32 oclass, struct nv50_wndw *wndw)
     90 {
     91 	return wimmc37b_init_(&wimmc37b, drm, oclass, wndw);
     92 }
     93