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1/*2 * Copyright 2017 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Ben Skeggs <bskeggs@redhat.com>23 */24#include "ram.h"25 26u3227gf108_ram_probe_fbp_amount(const struct nvkm_ram_func *func, u32 fbpao,28 struct nvkm_device *device, int fbp, int *pltcs)29{30 u32 fbpt = nvkm_rd32(device, 0x022438);31 u32 fbpat = nvkm_rd32(device, 0x02243c);32 u32 fbpas = fbpat / fbpt;33 u32 fbpa = fbp * fbpas;34 u32 size = 0;35 while (fbpas--) {36 if (!(fbpao & BIT(fbpa)))37 size += func->probe_fbpa_amount(device, fbpa);38 fbpa++;39 }40 *pltcs = 1;41 return size;42}43 44static const struct nvkm_ram_func45gf108_ram = {46 .upper = 0x0200000000ULL,47 .probe_fbp = gf100_ram_probe_fbp,48 .probe_fbp_amount = gf108_ram_probe_fbp_amount,49 .probe_fbpa_amount = gf100_ram_probe_fbpa_amount,50 .init = gf100_ram_init,51 .calc = gf100_ram_calc,52 .prog = gf100_ram_prog,53 .tidy = gf100_ram_tidy,54};55 56int57gf108_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)58{59 return gf100_ram_new_(&gf108_ram, fb, pram);60}61