1 /* 2 * Copyright 2017 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * 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 OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Ben Skeggs <bskeggs@redhat.com> 23 */ 24 #include "ram.h" 25 26 u32 27 gm200_ram_probe_fbp_amount(const struct nvkm_ram_func *func, u32 fbpao, 28 struct nvkm_device *device, int fbp, int *pltcs) 29 { 30 u32 ltcs = nvkm_rd32(device, 0x022450); 31 u32 fbpas = nvkm_rd32(device, 0x022458); 32 u32 fbpa = fbp * fbpas; 33 u32 size = 0; 34 if (!(nvkm_rd32(device, 0x021d38) & BIT(fbp))) { 35 u32 ltco = nvkm_rd32(device, 0x021d70 + (fbp * 4)); 36 u32 ltcm = ~ltco & ((1 << ltcs) - 1); 37 38 while (fbpas--) { 39 if (!(fbpao & (1 << fbpa))) 40 size += func->probe_fbpa_amount(device, fbpa); 41 fbpa++; 42 } 43 44 *pltcs = hweight32(ltcm); 45 } 46 return size; 47 } 48 49 static const struct nvkm_ram_func 50 gm200_ram = { 51 .upper = 0x1000000000ULL, 52 .probe_fbp = gm107_ram_probe_fbp, 53 .probe_fbp_amount = gm200_ram_probe_fbp_amount, 54 .probe_fbpa_amount = gf100_ram_probe_fbpa_amount, 55 .dtor = gk104_ram_dtor, 56 .init = gk104_ram_init, 57 .calc = gk104_ram_calc, 58 .prog = gk104_ram_prog, 59 .tidy = gk104_ram_tidy, 60 }; 61 62 int 63 gm200_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram) 64 { 65 return gk104_ram_new_(&gm200_ram, fb, pram); 66 } 67