drm/nouveau/top: initial implementation (5f76f294) · Commits · e / devices / android_kernel_teracube_2e

drivers/gpu/drm/nouveau/include/nvkm/subdev/top.h

+7 −0

Original line number	Diff line number	Diff line
		@@ -3,6 +3,13 @@
		#include <core/subdev.h>

		struct nvkm_top {
		const struct nvkm_top_func *func;
		struct nvkm_subdev subdev;
		struct list_head device;
		};

		u32 nvkm_top_reset(struct nvkm_top *, enum nvkm_devidx);
		u32 nvkm_top_intr(struct nvkm_top , u32 intr, u64 subdevs);
		enum nvkm_devidx nvkm_top_fault(struct nvkm_top *, int fault);
		enum nvkm_devidx nvkm_top_engine(struct nvkm_top , int, int runl, int *engn);
		#endif

drivers/gpu/drm/nouveau/nvkm/subdev/top/Kbuild

+1 −1

Original line number	Diff line number	Diff line
		#nvkm-y += nvkm/subdev/top/base.o
		nvkm-y += nvkm/subdev/top/base.o

drivers/gpu/drm/nouveau/nvkm/subdev/top/base.c

0 → 100644

+148 −0

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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_reset(struct nvkm_top *top, enum nvkm_devidx index)
		{
		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(struct nvkm_top top, u32 intr, u64 psubdevs)
		{
		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;
		}

		enum nvkm_devidx
		nvkm_top_fault(struct nvkm_top *top, int fault)
		{
		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_top top, int index, int runl, int *engn)
		{
		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, 0, &top->subdev);
		top->func = func;
		INIT_LIST_HEAD(&top->device);
		return 0;
		}

drivers/gpu/drm/nouveau/nvkm/subdev/top/priv.h

+20 −0

Original line number	Diff line number	Diff line
		@@ -2,4 +2,24 @@
		#define __NVKM_TOP_PRIV_H__
		#define nvkm_top(p) container_of((p), struct nvkm_top, subdev)
		#include <subdev/top.h>

		struct nvkm_top_func {
		int (oneinit)(struct nvkm_top );
		};

		int nvkm_top_new_(const struct nvkm_top_func , struct nvkm_device ,
		int, struct nvkm_top **);

		struct nvkm_top_device {
		enum nvkm_devidx index;
		u32 addr;
		int fault;
		int engine;
		int runlist;
		int reset;
		int intr;
		struct list_head head;
		};

		struct nvkm_top_device nvkm_top_device_new(struct nvkm_top );
		#endif