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      1 /*	$NetBSD: nouveau_dispnv50_wimm.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_wimm.c,v 1.2 2021/12/18 23:45:32 riastradh Exp $");
     26 
     27 #include "wimm.h"
     28 
     29 #include <nvif/class.h>
     30 
     31 int
     32 nv50_wimm_init(struct nouveau_drm *drm, struct nv50_wndw *wndw)
     33 {
     34 	struct {
     35 		s32 oclass;
     36 		int version;
     37 		int (*init)(struct nouveau_drm *, s32, struct nv50_wndw *);
     38 	} wimms[] = {
     39 		{ TU102_DISP_WINDOW_IMM_CHANNEL_DMA, 0, wimmc37b_init },
     40 		{ GV100_DISP_WINDOW_IMM_CHANNEL_DMA, 0, wimmc37b_init },
     41 		{}
     42 	};
     43 	struct nv50_disp *disp = nv50_disp(drm->dev);
     44 	int cid;
     45 
     46 	cid = nvif_mclass(&disp->disp->object, wimms);
     47 	if (cid < 0) {
     48 		NV_ERROR(drm, "No supported window immediate class\n");
     49 		return cid;
     50 	}
     51 
     52 	return wimms[cid].init(drm, wimms[cid].oclass, wndw);
     53 }
     54