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 33static void 34nv04_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 45static const struct nvkm_fb_func 46nv04_fb = { 47 .init = nv04_fb_init, 48 .ram_new = nv04_ram_new, 49}; 50 51int 52nv04_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