base.c

  1/*
  2 * Copyright 2012 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 "priv.h"
 25
 26#include <core/option.h>
 27#include <subdev/top.h>
 28
 29void
 30nvkm_mc_unk260(struct nvkm_device *device, u32 data)
 31{
 32	struct nvkm_mc *mc = device->mc;
 33	if (likely(mc) && mc->func->unk260)
 34		mc->func->unk260(mc, data);
 35}
 36
 37void
 38nvkm_mc_intr_mask(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, bool en)
 39{
 40	struct nvkm_subdev *subdev = nvkm_device_subdev(device, type, inst);
 41
 42	if (subdev) {
 43		if (en)
 44			nvkm_intr_allow(subdev, NVKM_INTR_SUBDEV);
 45		else
 46			nvkm_intr_block(subdev, NVKM_INTR_SUBDEV);
 47	}
 48}
 49
 50static u32
 51nvkm_mc_reset_mask(struct nvkm_device *device, bool isauto, enum nvkm_subdev_type type, int inst)
 52{
 53	struct nvkm_mc *mc = device->mc;
 54	const struct nvkm_mc_map *map;
 55	u64 pmc_enable = 0;
 56	if (likely(mc)) {
 57		if (!(pmc_enable = nvkm_top_reset(device, type, inst))) {
 58			for (map = mc->func->reset; map && map->stat; map++) {
 59				if (!isauto || !map->noauto) {
 60					if (map->type == type && map->inst == inst) {
 61						pmc_enable = map->stat;
 62						break;
 63					}
 64				}
 65			}
 66		}
 67	}
 68	return pmc_enable;
 69}
 70
 71void
 72nvkm_mc_reset(struct nvkm_device *device, enum nvkm_subdev_type type, int inst)
 73{
 74	u64 pmc_enable = nvkm_mc_reset_mask(device, true, type, inst);
 75	if (pmc_enable) {
 76		device->mc->func->device->disable(device->mc, pmc_enable);
 77		device->mc->func->device->enable(device->mc, pmc_enable);
 78	}
 79}
 80
 81void
 82nvkm_mc_disable(struct nvkm_device *device, enum nvkm_subdev_type type, int inst)
 83{
 84	u64 pmc_enable = nvkm_mc_reset_mask(device, false, type, inst);
 85	if (pmc_enable)
 86		device->mc->func->device->disable(device->mc, pmc_enable);
 87}
 88
 89void
 90nvkm_mc_enable(struct nvkm_device *device, enum nvkm_subdev_type type, int inst)
 91{
 92	u64 pmc_enable = nvkm_mc_reset_mask(device, false, type, inst);
 93	if (pmc_enable)
 94		device->mc->func->device->enable(device->mc, pmc_enable);
 95}
 96
 97bool
 98nvkm_mc_enabled(struct nvkm_device *device, enum nvkm_subdev_type type, int inst)
 99{
100	u64 pmc_enable = nvkm_mc_reset_mask(device, false, type, inst);
101
102	return (pmc_enable != 0) && device->mc->func->device->enabled(device->mc, pmc_enable);
103}
104
105static int
106nvkm_mc_init(struct nvkm_subdev *subdev)
107{
108	struct nvkm_mc *mc = nvkm_mc(subdev);
109	if (mc->func->init)
110		mc->func->init(mc);
111	return 0;
112}
113
114static void *
115nvkm_mc_dtor(struct nvkm_subdev *subdev)
116{
117	return nvkm_mc(subdev);
118}
119
120static const struct nvkm_subdev_func
121nvkm_mc = {
122	.dtor = nvkm_mc_dtor,
123	.init = nvkm_mc_init,
124};
125
126int
127nvkm_mc_new_(const struct nvkm_mc_func *func, struct nvkm_device *device,
128	     enum nvkm_subdev_type type, int inst, struct nvkm_mc **pmc)
129{
130	struct nvkm_mc *mc;
131	int ret;
132
133	if (!(mc = *pmc = kzalloc(sizeof(*mc), GFP_KERNEL)))
134		return -ENOMEM;
135
136	nvkm_subdev_ctor(&nvkm_mc, device, type, inst, &mc->subdev);
137	mc->func = func;
138
139	if (mc->func->intr) {
140		ret = nvkm_intr_add(mc->func->intr, mc->func->intrs, &mc->subdev,
141				    mc->func->intr_nonstall ? 2 : 1, &mc->intr);
142		if (ret)
143			return ret;
144	}
145
146	return 0;
147}