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/*
* Copyright 2016 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 <bskeggs@redhat.com>
*/
#include "priv.h"
struct nvkm_top_device *
nvkm_top_device_new(struct nvkm_top *top)
{
struct nvkm_top_device *info = kmalloc(sizeof(*info), GFP_KERNEL);
if (info) {
info->index = NVKM_SUBDEV_NR;
info->addr = 0;
info->fault = -1;
info->engine = -1;
info->runlist = -1;
info->reset = -1;
info->intr = -1;
list_add_tail(&info->head, &top->device);
}
return info;
}
u32
nvkm_top_addr(struct nvkm_device *device, enum nvkm_devidx index)
{
struct nvkm_top *top = device->top;
struct nvkm_top_device *info;
if (top) {
list_for_each_entry(info, &top->device, head) {
if (info->index == index)
return info->addr;
}
}
return 0;
}
u32
nvkm_top_reset(struct nvkm_device *device, enum nvkm_devidx index)
{
struct nvkm_top *top = device->top;
struct nvkm_top_device *info;
if (top) {
list_for_each_entry(info, &top->device, head) {
if (info->index == index && info->reset >= 0)
return BIT(info->reset);
}
}
return 0;
}
u32
nvkm_top_intr_mask(struct nvkm_device *device, enum nvkm_devidx devidx)
{
struct nvkm_top *top = device->top;
struct nvkm_top_device *info;
if (top) {
list_for_each_entry(info, &top->device, head) {
if (info->index == devidx && info->intr >= 0)
return BIT(info->intr);
}
}
return 0;
}
u32
nvkm_top_intr(struct nvkm_device *device, u32 intr, u64 *psubdevs)
{
struct nvkm_top *top = device->top;
struct nvkm_top_device *info;
u64 subdevs = 0;
u32 handled = 0;
if (top) {
list_for_each_entry(info, &top->device, head) {
if (info->index != NVKM_SUBDEV_NR && info->intr >= 0) {
if (intr & BIT(info->intr)) {
subdevs |= BIT_ULL(info->index);
handled |= BIT(info->intr);
}
}
}
}
*psubdevs = subdevs;
return intr & ~handled;
}
int
nvkm_top_fault_id(struct nvkm_device *device, enum nvkm_devidx devidx)
{
struct nvkm_top *top = device->top;
struct nvkm_top_device *info;
list_for_each_entry(info, &top->device, head) {
if (info->index == devidx && info->fault >= 0)
return info->fault;
}
return -ENOENT;
}
enum nvkm_devidx
nvkm_top_fault(struct nvkm_device *device, int fault)
{
struct nvkm_top *top = device->top;
struct nvkm_top_device *info;
list_for_each_entry(info, &top->device, head) {
if (info->fault == fault)
return info->index;
}
return NVKM_SUBDEV_NR;
}
enum nvkm_devidx
nvkm_top_engine(struct nvkm_device *device, int index, int *runl, int *engn)
{
struct nvkm_top *top = device->top;
struct nvkm_top_device *info;
int n = 0;
list_for_each_entry(info, &top->device, head) {
if (info->engine >= 0 && info->runlist >= 0 && n++ == index) {
*runl = info->runlist;
*engn = info->engine;
return info->index;
}
}
return -ENODEV;
}
static int
nvkm_top_oneinit(struct nvkm_subdev *subdev)
{
struct nvkm_top *top = nvkm_top(subdev);
return top->func->oneinit(top);
}
static void *
nvkm_top_dtor(struct nvkm_subdev *subdev)
{
struct nvkm_top *top = nvkm_top(subdev);
struct nvkm_top_device *info, *temp;
list_for_each_entry_safe(info, temp, &top->device, head) {
list_del(&info->head);
kfree(info);
}
return top;
}
static const struct nvkm_subdev_func
nvkm_top = {
.dtor = nvkm_top_dtor,
.oneinit = nvkm_top_oneinit,
};
int
nvkm_top_new_(const struct nvkm_top_func *func, struct nvkm_device *device,
int index, struct nvkm_top **ptop)
{
struct nvkm_top *top;
if (!(top = *ptop = kzalloc(sizeof(*top), GFP_KERNEL)))
return -ENOMEM;
nvkm_subdev_ctor(&nvkm_top, device, index, &top->subdev);
top->func = func;
INIT_LIST_HEAD(&top->device);
return 0;
}
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