Home | History | Annotate | Line # | Download | only in fb 
      1 /*	$NetBSD: nouveau_nvkm_subdev_fb_nv04.c,v 1.3 2021/12/18 23:45:39 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_subdev_fb_nv04.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $");
     28 
     29 #include "priv.h"
     30 #include "ram.h"
     31 #include "regsnv04.h"
     32 
     33 static void
     34 nv04_fb_init(struct nvkm_fb *fb)
     35 {
     36 	struct nvkm_device *device = fb->subdev.device;
     37 
     38 	/* This is what the DDX did for NV_ARCH_04, but a mmio-trace shows
     39 	 * nvidia reading PFB_CFG_0, then writing back its original value.
     40 	 * (which was 0x701114 in this case)
     41 	 */
     42 	nvkm_wr32(device, NV04_PFB_CFG0, 0x1114);
     43 }
     44 
     45 static const struct nvkm_fb_func
     46 nv04_fb = {
     47 	.init = nv04_fb_init,
     48 	.ram_new = nv04_ram_new,
     49 };
     50 
     51 int
     52 nv04_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
     53 {
     54 	return nvkm_fb_new_(&nv04_fb, device, index, pfb);
     55 }
     56