1/* $NetBSD: nouveau_nvkm_subdev_fb_ramgm200.c,v 1.2 2021/12/18 23:45:39 riastradh Exp $ */ 2 3/* 4 * Copyright 2017 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 <bskeggs@redhat.com> 25 */ 26#include <sys/cdefs.h> 27__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_fb_ramgm200.c,v 1.2 2021/12/18 23:45:39 riastradh Exp $"); 28 29#include "ram.h" 30 31u32 32gm200_ram_probe_fbp_amount(const struct nvkm_ram_func *func, u32 fbpao, 33 struct nvkm_device *device, int fbp, int *pltcs) 34{ 35 u32 ltcs = nvkm_rd32(device, 0x022450); 36 u32 fbpas = nvkm_rd32(device, 0x022458); 37 u32 fbpa = fbp * fbpas; 38 u32 size = 0; 39 if (!(nvkm_rd32(device, 0x021d38) & BIT(fbp))) { 40 u32 ltco = nvkm_rd32(device, 0x021d70 + (fbp * 4)); 41 u32 ltcm = ~ltco & ((1 << ltcs) - 1); 42 43 while (fbpas--) { 44 if (!(fbpao & (1 << fbpa))) 45 size += func->probe_fbpa_amount(device, fbpa); 46 fbpa++; 47 } 48 49 *pltcs = hweight32(ltcm); 50 } 51 return size; 52} 53 54static const struct nvkm_ram_func 55gm200_ram = { 56 .upper = 0x1000000000ULL, 57 .probe_fbp = gm107_ram_probe_fbp, 58 .probe_fbp_amount = gm200_ram_probe_fbp_amount, 59 .probe_fbpa_amount = gf100_ram_probe_fbpa_amount, 60 .dtor = gk104_ram_dtor, 61 .init = gk104_ram_init, 62 .calc = gk104_ram_calc, 63 .prog = gk104_ram_prog, 64 .tidy = gk104_ram_tidy, 65}; 66 67int 68gm200_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram) 69{ 70 return gk104_ram_new_(&gm200_ram, fb, pram); 71} 72