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/*
* Copyright 2012 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Ben Skeggs
*/
#include <subdev/mc.h>
#include <core/option.h>
static irqreturn_t
nouveau_mc_intr(int irq, void *arg)
{
struct nouveau_mc *pmc = arg;
const struct nouveau_mc_intr *map = pmc->intr_map;
struct nouveau_device *device = nv_device(pmc);
struct nouveau_subdev *unit;
u32 stat, intr;
intr = stat = nv_rd32(pmc, 0x000100);
if (intr == 0xffffffff)
return IRQ_NONE;
while (stat && map->stat) {
if (stat & map->stat) {
unit = nouveau_subdev(pmc, map->unit);
if (unit && unit->intr)
unit->intr(unit);
intr &= ~map->stat;
}
map++;
}
if (pmc->use_msi)
nv_wr08(pmc->base.base.parent, 0x00088068, 0xff);
if (intr) {
nv_error(pmc, "unknown intr 0x%08x\n", stat);
}
if (stat == IRQ_HANDLED)
pm_runtime_mark_last_busy(&device->pdev->dev);
return stat ? IRQ_HANDLED : IRQ_NONE;
}
int
_nouveau_mc_fini(struct nouveau_object *object, bool suspend)
{
struct nouveau_mc *pmc = (void *)object;
nv_wr32(pmc, 0x000140, 0x00000000);
return nouveau_subdev_fini(&pmc->base, suspend);
}
int
_nouveau_mc_init(struct nouveau_object *object)
{
struct nouveau_mc *pmc = (void *)object;
int ret = nouveau_subdev_init(&pmc->base);
if (ret)
return ret;
nv_wr32(pmc, 0x000140, 0x00000001);
return 0;
}
void
_nouveau_mc_dtor(struct nouveau_object *object)
{
struct nouveau_device *device = nv_device(object);
struct nouveau_mc *pmc = (void *)object;
free_irq(device->pdev->irq, pmc);
if (pmc->use_msi)
pci_disable_msi(device->pdev);
nouveau_subdev_destroy(&pmc->base);
}
int
nouveau_mc_create_(struct nouveau_object *parent, struct nouveau_object *engine,
struct nouveau_oclass *oclass,
const struct nouveau_mc_intr *intr_map,
int length, void **pobject)
{
struct nouveau_device *device = nv_device(parent);
struct nouveau_mc *pmc;
int ret;
ret = nouveau_subdev_create_(parent, engine, oclass, 0, "PMC",
"master", length, pobject);
pmc = *pobject;
if (ret)
return ret;
pmc->intr_map = intr_map;
switch (device->pdev->device & 0x0ff0) {
case 0x00f0: /* BR02? */
case 0x02e0: /* BR02? */
pmc->use_msi = false;
break;
default:
pmc->use_msi = nouveau_boolopt(device->cfgopt, "NvMSI", false);
if (pmc->use_msi) {
pmc->use_msi = pci_enable_msi(device->pdev) == 0;
if (pmc->use_msi) {
nv_info(pmc, "MSI interrupts enabled\n");
nv_wr08(device, 0x00088068, 0xff);
}
}
break;
}
ret = request_irq(device->pdev->irq, nouveau_mc_intr,
IRQF_SHARED, "nouveau", pmc);
if (ret < 0)
return ret;
return 0;
}
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