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1/*2 * Copyright 2012 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 Skeggs23 */24#include "priv.h"25 26#include <core/memory.h>27#include <subdev/fb.h>28#include <subdev/timer.h>29 30void31gf100_ltc_cbc_clear(struct nvkm_ltc *ltc, u32 start, u32 limit)32{33 struct nvkm_device *device = ltc->subdev.device;34 nvkm_wr32(device, 0x17e8cc, start);35 nvkm_wr32(device, 0x17e8d0, limit);36 nvkm_wr32(device, 0x17e8c8, 0x00000004);37}38 39void40gf100_ltc_cbc_wait(struct nvkm_ltc *ltc)41{42 struct nvkm_device *device = ltc->subdev.device;43 int c, s;44 for (c = 0; c < ltc->ltc_nr; c++) {45 for (s = 0; s < ltc->lts_nr; s++) {46 const u32 addr = 0x1410c8 + (c * 0x2000) + (s * 0x400);47 nvkm_msec(device, 2000,48 if (!nvkm_rd32(device, addr))49 break;50 );51 }52 }53}54 55void56gf100_ltc_zbc_clear_color(struct nvkm_ltc *ltc, int i, const u32 color[4])57{58 struct nvkm_device *device = ltc->subdev.device;59 nvkm_mask(device, 0x17ea44, 0x0000000f, i);60 nvkm_wr32(device, 0x17ea48, color[0]);61 nvkm_wr32(device, 0x17ea4c, color[1]);62 nvkm_wr32(device, 0x17ea50, color[2]);63 nvkm_wr32(device, 0x17ea54, color[3]);64}65 66void67gf100_ltc_zbc_clear_depth(struct nvkm_ltc *ltc, int i, const u32 depth)68{69 struct nvkm_device *device = ltc->subdev.device;70 nvkm_mask(device, 0x17ea44, 0x0000000f, i);71 nvkm_wr32(device, 0x17ea58, depth);72}73 74const struct nvkm_bitfield75gf100_ltc_lts_intr_name[] = {76 { 0x00000001, "IDLE_ERROR_IQ" },77 { 0x00000002, "IDLE_ERROR_CBC" },78 { 0x00000004, "IDLE_ERROR_TSTG" },79 { 0x00000008, "IDLE_ERROR_DSTG" },80 { 0x00000010, "EVICTED_CB" },81 { 0x00000020, "ILLEGAL_COMPSTAT" },82 { 0x00000040, "BLOCKLINEAR_CB" },83 { 0x00000100, "ECC_SEC_ERROR" },84 { 0x00000200, "ECC_DED_ERROR" },85 { 0x00000400, "DEBUG" },86 { 0x00000800, "ATOMIC_TO_Z" },87 { 0x00001000, "ILLEGAL_ATOMIC" },88 { 0x00002000, "BLKACTIVITY_ERR" },89 {}90};91 92static void93gf100_ltc_lts_intr(struct nvkm_ltc *ltc, int c, int s)94{95 struct nvkm_subdev *subdev = <c->subdev;96 struct nvkm_device *device = subdev->device;97 u32 base = 0x141000 + (c * 0x2000) + (s * 0x400);98 u32 intr = nvkm_rd32(device, base + 0x020);99 u32 stat = intr & 0x0000ffff;100 char msg[128];101 102 if (stat) {103 nvkm_snprintbf(msg, sizeof(msg), gf100_ltc_lts_intr_name, stat);104 nvkm_error(subdev, "LTC%d_LTS%d: %08x [%s]\n", c, s, stat, msg);105 }106 107 nvkm_wr32(device, base + 0x020, intr);108}109 110void111gf100_ltc_intr(struct nvkm_ltc *ltc)112{113 struct nvkm_device *device = ltc->subdev.device;114 u32 mask;115 116 mask = nvkm_rd32(device, 0x00017c);117 while (mask) {118 u32 s, c = __ffs(mask);119 for (s = 0; s < ltc->lts_nr; s++)120 gf100_ltc_lts_intr(ltc, c, s);121 mask &= ~(1 << c);122 }123}124 125void126gf100_ltc_invalidate(struct nvkm_ltc *ltc)127{128 struct nvkm_device *device = ltc->subdev.device;129 s64 taken;130 131 nvkm_wr32(device, 0x70004, 0x00000001);132 taken = nvkm_wait_msec(device, 2000, 0x70004, 0x00000003, 0x00000000);133 134 if (taken > 0)135 nvkm_debug(<c->subdev, "LTC invalidate took %lld ns\n", taken);136}137 138void139gf100_ltc_flush(struct nvkm_ltc *ltc)140{141 struct nvkm_device *device = ltc->subdev.device;142 s64 taken;143 144 nvkm_wr32(device, 0x70010, 0x00000001);145 taken = nvkm_wait_msec(device, 2000, 0x70010, 0x00000003, 0x00000000);146 147 if (taken > 0)148 nvkm_debug(<c->subdev, "LTC flush took %lld ns\n", taken);149}150 151/* TODO: Figure out tag memory details and drop the over-cautious allocation.152 */153int154gf100_ltc_oneinit_tag_ram(struct nvkm_ltc *ltc)155{156 struct nvkm_device *device = ltc->subdev.device;157 struct nvkm_fb *fb = device->fb;158 struct nvkm_ram *ram = fb->ram;159 u32 bits = (nvkm_rd32(device, 0x100c80) & 0x00001000) ? 16 : 17;160 u32 tag_size, tag_margin, tag_align;161 int ret;162 163 /* No VRAM, no tags for now. */164 if (!ram) {165 ltc->num_tags = 0;166 goto mm_init;167 }168 169 /* tags for 1/4 of VRAM should be enough (8192/4 per GiB of VRAM) */170 ltc->num_tags = (ram->size >> 17) / 4;171 if (ltc->num_tags > (1 << bits))172 ltc->num_tags = 1 << bits; /* we have 16/17 bits in PTE */173 ltc->num_tags = (ltc->num_tags + 63) & ~63; /* round up to 64 */174 175 tag_align = ltc->ltc_nr * 0x800;176 tag_margin = (tag_align < 0x6000) ? 0x6000 : tag_align;177 178 /* 4 part 4 sub: 0x2000 bytes for 56 tags */179 /* 3 part 4 sub: 0x6000 bytes for 168 tags */180 /*181 * About 147 bytes per tag. Let's be safe and allocate x2, which makes182 * 0x4980 bytes for 64 tags, and round up to 0x6000 bytes for 64 tags.183 *184 * For 4 GiB of memory we'll have 8192 tags which makes 3 MiB, < 0.1 %.185 */186 tag_size = (ltc->num_tags / 64) * 0x6000 + tag_margin;187 tag_size += tag_align;188 189 ret = nvkm_ram_get(device, NVKM_RAM_MM_NORMAL, 0x01, 12, tag_size,190 true, true, <c->tag_ram);191 if (ret) {192 ltc->num_tags = 0;193 } else {194 u64 tag_base = nvkm_memory_addr(ltc->tag_ram) + tag_margin;195 196 tag_base += tag_align - 1;197 do_div(tag_base, tag_align);198 199 ltc->tag_base = tag_base;200 }201 202mm_init:203 nvkm_mm_fini(&fb->tags.mm);204 return nvkm_mm_init(&fb->tags.mm, 0, 0, ltc->num_tags, 1);205}206 207int208gf100_ltc_oneinit(struct nvkm_ltc *ltc)209{210 struct nvkm_device *device = ltc->subdev.device;211 const u32 parts = nvkm_rd32(device, 0x022438);212 const u32 mask = nvkm_rd32(device, 0x022554);213 const u32 slice = nvkm_rd32(device, 0x17e8dc) >> 28;214 int i;215 216 for (i = 0; i < parts; i++) {217 if (!(mask & (1 << i)))218 ltc->ltc_nr++;219 }220 ltc->lts_nr = slice;221 222 return gf100_ltc_oneinit_tag_ram(ltc);223}224 225static void226gf100_ltc_init(struct nvkm_ltc *ltc)227{228 struct nvkm_device *device = ltc->subdev.device;229 u32 lpg128 = !(nvkm_rd32(device, 0x100c80) & 0x00000001);230 231 nvkm_mask(device, 0x17e820, 0x00100000, 0x00000000); /* INTR_EN &= ~0x10 */232 nvkm_wr32(device, 0x17e8d8, ltc->ltc_nr);233 nvkm_wr32(device, 0x17e8d4, ltc->tag_base);234 nvkm_mask(device, 0x17e8c0, 0x00000002, lpg128 ? 0x00000002 : 0x00000000);235}236 237static const struct nvkm_ltc_func238gf100_ltc = {239 .oneinit = gf100_ltc_oneinit,240 .init = gf100_ltc_init,241 .intr = gf100_ltc_intr,242 .cbc_clear = gf100_ltc_cbc_clear,243 .cbc_wait = gf100_ltc_cbc_wait,244 .zbc_color = 16,245 .zbc_depth = 16,246 .zbc_clear_color = gf100_ltc_zbc_clear_color,247 .zbc_clear_depth = gf100_ltc_zbc_clear_depth,248 .invalidate = gf100_ltc_invalidate,249 .flush = gf100_ltc_flush,250};251 252int253gf100_ltc_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,254 struct nvkm_ltc **pltc)255{256 return nvkm_ltc_new_(&gf100_ltc, device, type, inst, pltc);257}258