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1/*2 * Copyright 2013 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 "priv.h"25 26struct nvkm_hwsq {27 struct nvkm_subdev *subdev;28 u32 addr;29 u32 data;30 struct {31 u8 data[512];32 u16 size;33 } c;34};35 36static void37hwsq_cmd(struct nvkm_hwsq *hwsq, int size, u8 data[])38{39 memcpy(&hwsq->c.data[hwsq->c.size], data, size * sizeof(data[0]));40 hwsq->c.size += size;41}42 43int44nvkm_hwsq_init(struct nvkm_subdev *subdev, struct nvkm_hwsq **phwsq)45{46 struct nvkm_hwsq *hwsq;47 48 hwsq = *phwsq = kmalloc(sizeof(*hwsq), GFP_KERNEL);49 if (hwsq) {50 hwsq->subdev = subdev;51 hwsq->addr = ~0;52 hwsq->data = ~0;53 memset(hwsq->c.data, 0x7f, sizeof(hwsq->c.data));54 hwsq->c.size = 0;55 }56 57 return hwsq ? 0 : -ENOMEM;58}59 60int61nvkm_hwsq_fini(struct nvkm_hwsq **phwsq, bool exec)62{63 struct nvkm_hwsq *hwsq = *phwsq;64 int ret = 0, i;65 if (hwsq) {66 struct nvkm_subdev *subdev = hwsq->subdev;67 struct nvkm_bus *bus = subdev->device->bus;68 hwsq->c.size = (hwsq->c.size + 4) / 4;69 if (hwsq->c.size <= bus->func->hwsq_size) {70 if (exec)71 ret = bus->func->hwsq_exec(bus,72 (u32 *)hwsq->c.data,73 hwsq->c.size);74 if (ret)75 nvkm_error(subdev, "hwsq exec failed: %d\n", ret);76 } else {77 nvkm_error(subdev, "hwsq ucode too large\n");78 ret = -ENOSPC;79 }80 81 for (i = 0; ret && i < hwsq->c.size; i++)82 nvkm_error(subdev, "\t%08x\n", ((u32 *)hwsq->c.data)[i]);83 84 *phwsq = NULL;85 kfree(hwsq);86 }87 return ret;88}89 90void91nvkm_hwsq_wr32(struct nvkm_hwsq *hwsq, u32 addr, u32 data)92{93 nvkm_debug(hwsq->subdev, "R[%06x] = %08x\n", addr, data);94 95 if (hwsq->data != data) {96 if ((data & 0xffff0000) != (hwsq->data & 0xffff0000)) {97 hwsq_cmd(hwsq, 5, (u8[]){ 0xe2, data, data >> 8,98 data >> 16, data >> 24 });99 } else {100 hwsq_cmd(hwsq, 3, (u8[]){ 0x42, data, data >> 8 });101 }102 }103 104 if ((addr & 0xffff0000) != (hwsq->addr & 0xffff0000)) {105 hwsq_cmd(hwsq, 5, (u8[]){ 0xe0, addr, addr >> 8,106 addr >> 16, addr >> 24 });107 } else {108 hwsq_cmd(hwsq, 3, (u8[]){ 0x40, addr, addr >> 8 });109 }110 111 hwsq->addr = addr;112 hwsq->data = data;113}114 115void116nvkm_hwsq_setf(struct nvkm_hwsq *hwsq, u8 flag, int data)117{118 nvkm_debug(hwsq->subdev, " FLAG[%02x] = %d\n", flag, data);119 flag += 0x80;120 if (data >= 0)121 flag += 0x20;122 if (data >= 1)123 flag += 0x20;124 hwsq_cmd(hwsq, 1, (u8[]){ flag });125}126 127void128nvkm_hwsq_wait(struct nvkm_hwsq *hwsq, u8 flag, u8 data)129{130 nvkm_debug(hwsq->subdev, " WAIT[%02x] = %d\n", flag, data);131 hwsq_cmd(hwsq, 3, (u8[]){ 0x5f, flag, data });132}133 134void135nvkm_hwsq_wait_vblank(struct nvkm_hwsq *hwsq)136{137 struct nvkm_subdev *subdev = hwsq->subdev;138 struct nvkm_device *device = subdev->device;139 u32 heads, x, y, px = 0;140 int i, head_sync;141 142 heads = nvkm_rd32(device, 0x610050);143 for (i = 0; i < 2; i++) {144 /* Heuristic: sync to head with biggest resolution */145 if (heads & (2 << (i << 3))) {146 x = nvkm_rd32(device, 0x610b40 + (0x540 * i));147 y = (x & 0xffff0000) >> 16;148 x &= 0x0000ffff;149 if ((x * y) > px) {150 px = (x * y);151 head_sync = i;152 }153 }154 }155 156 if (px == 0) {157 nvkm_debug(subdev, "WAIT VBLANK !NO ACTIVE HEAD\n");158 return;159 }160 161 nvkm_debug(subdev, "WAIT VBLANK HEAD%d\n", head_sync);162 nvkm_hwsq_wait(hwsq, head_sync ? 0x3 : 0x1, 0x0);163 nvkm_hwsq_wait(hwsq, head_sync ? 0x3 : 0x1, 0x1);164}165 166void167nvkm_hwsq_nsec(struct nvkm_hwsq *hwsq, u32 nsec)168{169 u8 shift = 0, usec = nsec / 1000;170 while (usec & ~3) {171 usec >>= 2;172 shift++;173 }174 175 nvkm_debug(hwsq->subdev, " DELAY = %d ns\n", nsec);176 hwsq_cmd(hwsq, 1, (u8[]){ 0x00 | (shift << 2) | usec });177}178