2 * Copyright 2012 Red Hat Inc.
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5 * copy of this software and associated documentation files (the "Software"),
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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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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
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25 #include <subdev/mc.h>
26 #include <linux/pm_runtime.h>
29 nouveau_mc_intr(int irq, void *arg)
31 struct nouveau_mc *pmc = arg;
32 const struct nouveau_mc_intr *map = pmc->intr_map;
33 struct nouveau_device *device = nv_device(pmc);
34 struct nouveau_subdev *unit;
37 intr = stat = nv_rd32(pmc, 0x000100);
38 if (intr == 0xffffffff)
40 while (stat && map->stat) {
41 if (stat & map->stat) {
42 unit = nouveau_subdev(pmc, map->unit);
43 if (unit && unit->intr)
51 nv_error(pmc, "unknown intr 0x%08x\n", stat);
54 if (stat == IRQ_HANDLED)
55 pm_runtime_mark_last_busy(&device->pdev->dev);
56 return stat ? IRQ_HANDLED : IRQ_NONE;
60 _nouveau_mc_fini(struct nouveau_object *object, bool suspend)
62 struct nouveau_mc *pmc = (void *)object;
63 nv_wr32(pmc, 0x000140, 0x00000000);
64 return nouveau_subdev_fini(&pmc->base, suspend);
68 _nouveau_mc_init(struct nouveau_object *object)
70 struct nouveau_mc *pmc = (void *)object;
71 int ret = nouveau_subdev_init(&pmc->base);
74 nv_wr32(pmc, 0x000140, 0x00000001);
79 _nouveau_mc_dtor(struct nouveau_object *object)
81 struct nouveau_device *device = nv_device(object);
82 struct nouveau_mc *pmc = (void *)object;
83 free_irq(device->pdev->irq, pmc);
84 nouveau_subdev_destroy(&pmc->base);
88 nouveau_mc_create_(struct nouveau_object *parent, struct nouveau_object *engine,
89 struct nouveau_oclass *oclass,
90 const struct nouveau_mc_intr *intr_map,
91 int length, void **pobject)
93 struct nouveau_device *device = nv_device(parent);
94 struct nouveau_mc *pmc;
97 ret = nouveau_subdev_create_(parent, engine, oclass, 0, "PMC",
98 "master", length, pobject);
103 pmc->intr_map = intr_map;
105 ret = request_irq(device->pdev->irq, nouveau_mc_intr,
106 IRQF_SHARED, "nouveau", pmc);