drivers/gpu/drm/nouveau/nvkm/engine/pm/nv40.c

   1 /*
   2  * Copyright 2013 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
  23  */
  24 #include "nv40.h"
  25
  26 static void
  27 nv40_perfctr_init(struct nvkm_pm *pm, struct nvkm_perfdom *dom,
  28                   struct nvkm_perfctr *ctr)
  29 {
  30         struct nvkm_device *device = pm->engine.subdev.device;
  31         u32 log = ctr->logic_op;
  32         u32 src = 0x00000000;
  33         int i;
  34
  35         for (i = 0; i < 4; i++)
  36                 src |= ctr->signal[i] << (i * 8);
  37
  38         nvkm_wr32(device, 0x00a7c0 + dom->addr, 0x00000001 | (dom->mode << 4));
  39         nvkm_wr32(device, 0x00a400 + dom->addr + (ctr->slot * 0x40), src);
  40         nvkm_wr32(device, 0x00a420 + dom->addr + (ctr->slot * 0x40), log);
  41 }
  42
  43 static void
  44 nv40_perfctr_read(struct nvkm_pm *pm, struct nvkm_perfdom *dom,
  45                   struct nvkm_perfctr *ctr)
  46 {
  47         struct nvkm_device *device = pm->engine.subdev.device;
  48
  49         switch (ctr->slot) {
  50         case 0: ctr->ctr = nvkm_rd32(device, 0x00a700 + dom->addr); break;
  51         case 1: ctr->ctr = nvkm_rd32(device, 0x00a6c0 + dom->addr); break;
  52         case 2: ctr->ctr = nvkm_rd32(device, 0x00a680 + dom->addr); break;
  53         case 3: ctr->ctr = nvkm_rd32(device, 0x00a740 + dom->addr); break;
  54         }
  55         dom->clk = nvkm_rd32(device, 0x00a600 + dom->addr);
  56 }
  57
  58 static void
  59 nv40_perfctr_next(struct nvkm_pm *pm, struct nvkm_perfdom *dom)
  60 {
  61         struct nvkm_device *device = pm->engine.subdev.device;
  62         if (pm->sequence != pm->sequence) {
  63                 nvkm_wr32(device, 0x400084, 0x00000020);
  64                 pm->sequence = pm->sequence;
  65         }
  66 }
  67
  68 const struct nvkm_funcdom
  69 nv40_perfctr_func = {
  70         .init = nv40_perfctr_init,
  71         .read = nv40_perfctr_read,
  72         .next = nv40_perfctr_next,
  73 };
  74
  75 static const struct nvkm_pm_func
  76 nv40_pm_ = {
  77 };
  78
  79 int
  80 nv40_pm_new_(const struct nvkm_specdom *doms, struct nvkm_device *device,
  81              int index, struct nvkm_pm **ppm)
  82 {
  83         struct nv40_pm *pm;
  84         int ret;
  85
  86         if (!(pm = kzalloc(sizeof(*pm), GFP_KERNEL)))
  87                 return -ENOMEM;
  88         *ppm = &pm->base;
  89
  90         ret = nvkm_pm_ctor(&nv40_pm_, device, index, &pm->base);
  91         if (ret)
  92                 return ret;
  93
  94         return nvkm_perfdom_new(&pm->base, "pc", 0, 0, 0, 4, doms);
  95 }
  96
  97 static const struct nvkm_specdom
  98 nv40_pm[] = {
  99         { 0x20, (const struct nvkm_specsig[]) {
 100                         {}
 101                 }, &nv40_perfctr_func },
 102         { 0x20, (const struct nvkm_specsig[]) {
 103                         {}
 104                 }, &nv40_perfctr_func },
 105         { 0x20, (const struct nvkm_specsig[]) {
 106                         {}
 107                 }, &nv40_perfctr_func },
 108         { 0x20, (const struct nvkm_specsig[]) {
 109                         {}
 110                 }, &nv40_perfctr_func },
 111         { 0x20, (const struct nvkm_specsig[]) {
 112                         {}
 113                 }, &nv40_perfctr_func },
 114         {}
 115 };
 116
 117 int
 118 nv40_pm_new(struct nvkm_device *device, int index, struct nvkm_pm **ppm)
 119 {
 120         return nv40_pm_new_(nv40_pm, device, index, ppm);
 121 }