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      1 /*	$NetBSD: nouveau_nvkm_engine_pm_nv40.c,v 1.3 2021/12/18 23:45:37 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2013 Red Hat Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: Ben Skeggs
     25  */
     26 #include <sys/cdefs.h>
     27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_engine_pm_nv40.c,v 1.3 2021/12/18 23:45:37 riastradh Exp $");
     28 
     29 #include "nv40.h"
     30 
     31 static void
     32 nv40_perfctr_init(struct nvkm_pm *pm, struct nvkm_perfdom *dom,
     33 		  struct nvkm_perfctr *ctr)
     34 {
     35 	struct nvkm_device *device = pm->engine.subdev.device;
     36 	u32 log = ctr->logic_op;
     37 	u32 src = 0x00000000;
     38 	int i;
     39 
     40 	for (i = 0; i < 4; i++)
     41 		src |= ctr->signal[i] << (i * 8);
     42 
     43 	nvkm_wr32(device, 0x00a7c0 + dom->addr, 0x00000001 | (dom->mode << 4));
     44 	nvkm_wr32(device, 0x00a400 + dom->addr + (ctr->slot * 0x40), src);
     45 	nvkm_wr32(device, 0x00a420 + dom->addr + (ctr->slot * 0x40), log);
     46 }
     47 
     48 static void
     49 nv40_perfctr_read(struct nvkm_pm *pm, struct nvkm_perfdom *dom,
     50 		  struct nvkm_perfctr *ctr)
     51 {
     52 	struct nvkm_device *device = pm->engine.subdev.device;
     53 
     54 	switch (ctr->slot) {
     55 	case 0: ctr->ctr = nvkm_rd32(device, 0x00a700 + dom->addr); break;
     56 	case 1: ctr->ctr = nvkm_rd32(device, 0x00a6c0 + dom->addr); break;
     57 	case 2: ctr->ctr = nvkm_rd32(device, 0x00a680 + dom->addr); break;
     58 	case 3: ctr->ctr = nvkm_rd32(device, 0x00a740 + dom->addr); break;
     59 	}
     60 	dom->clk = nvkm_rd32(device, 0x00a600 + dom->addr);
     61 }
     62 
     63 static void
     64 nv40_perfctr_next(struct nvkm_pm *pm, struct nvkm_perfdom *dom)
     65 {
     66 	struct nvkm_device *device = pm->engine.subdev.device;
     67 	struct nv40_pm *nv40pm = container_of(pm, struct nv40_pm, base);
     68 
     69 	if (nv40pm->sequence != pm->sequence) {
     70 		nvkm_wr32(device, 0x400084, 0x00000020);
     71 		nv40pm->sequence = pm->sequence;
     72 	}
     73 }
     74 
     75 const struct nvkm_funcdom
     76 nv40_perfctr_func = {
     77 	.init = nv40_perfctr_init,
     78 	.read = nv40_perfctr_read,
     79 	.next = nv40_perfctr_next,
     80 };
     81 
     82 static const struct nvkm_pm_func
     83 nv40_pm_ = {
     84 };
     85 
     86 int
     87 nv40_pm_new_(const struct nvkm_specdom *doms, struct nvkm_device *device,
     88 	     int index, struct nvkm_pm **ppm)
     89 {
     90 	struct nv40_pm *pm;
     91 	int ret;
     92 
     93 	if (!(pm = kzalloc(sizeof(*pm), GFP_KERNEL)))
     94 		return -ENOMEM;
     95 	*ppm = &pm->base;
     96 
     97 	ret = nvkm_pm_ctor(&nv40_pm_, device, index, &pm->base);
     98 	if (ret)
     99 		return ret;
    100 
    101 	return nvkm_perfdom_new(&pm->base, "pc", 0, 0, 0, 4, doms);
    102 }
    103 
    104 static const struct nvkm_specdom
    105 nv40_pm[] = {
    106 	{ 0x20, (const struct nvkm_specsig[]) {
    107 			{}
    108 		}, &nv40_perfctr_func },
    109 	{ 0x20, (const struct nvkm_specsig[]) {
    110 			{}
    111 		}, &nv40_perfctr_func },
    112 	{ 0x20, (const struct nvkm_specsig[]) {
    113 			{}
    114 		}, &nv40_perfctr_func },
    115 	{ 0x20, (const struct nvkm_specsig[]) {
    116 			{}
    117 		}, &nv40_perfctr_func },
    118 	{ 0x20, (const struct nvkm_specsig[]) {
    119 			{}
    120 		}, &nv40_perfctr_func },
    121 	{}
    122 };
    123 
    124 int
    125 nv40_pm_new(struct nvkm_device *device, int index, struct nvkm_pm **ppm)
    126 {
    127 	return nv40_pm_new_(nv40_pm, device, index, ppm);
    128 }
    129