104 lines
3.2 KiB
C
104 lines
3.2 KiB
C
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/*
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* drivers/video/tegra/host/nvhost_channel.h
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*
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* Tegra Graphics Host Channel
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*
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* Copyright (c) 2010-2020, NVIDIA Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __NVHOST_CHANNEL_H
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#define __NVHOST_CHANNEL_H
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#include <linux/cdev.h>
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#include <linux/io.h>
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#include <linux/nvhost.h>
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#include "nvhost_cdma.h"
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#define NVHOST_MAX_WAIT_CHECKS 256
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#define NVHOST_MAX_GATHERS 512
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#define NVHOST_MAX_HANDLES 1280
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#define NVHOST_MAX_POWERGATE_IDS 2
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struct nvhost_master;
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struct platform_device;
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struct nvhost_channel;
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struct nvhost_channel_ops {
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const char *soc_name;
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int (*init)(struct nvhost_channel *,
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struct nvhost_master *);
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int (*submit)(struct nvhost_job *job);
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int (*init_gather_filter)(struct platform_device *pdev,
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struct nvhost_channel *ch);
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};
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struct nvhost_channel {
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struct nvhost_channel_ops ops;
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struct kref refcount;
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int chid;
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int dev_chid;
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struct mutex submitlock;
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void __iomem *aperture;
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struct platform_device *dev;
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struct nvhost_cdma cdma;
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bool cdma_initialized;
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/* pointer to channel address space */
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struct nvhost_vm *vm;
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/* owner identifier */
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void *identifier;
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};
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#define channel_op(ch) (ch->ops)
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int nvhost_alloc_channels(struct nvhost_master *host);
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int nvhost_channel_remove_identifier(struct nvhost_device_data *pdata,
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void *identifier);
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int nvhost_channel_unmap(struct nvhost_channel *ch);
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int nvhost_channel_release(struct nvhost_device_data *pdata);
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int nvhost_channel_list_free(struct nvhost_master *host);
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struct nvhost_channel *nvhost_check_channel(struct nvhost_device_data *pdata);
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int nvhost_channel_init(struct nvhost_channel *ch,
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struct nvhost_master *dev);
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int nvhost_channel_suspend(struct nvhost_master *host);
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int nvhost_channel_read_reg(struct nvhost_channel *channel,
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u32 offset, u32 *value);
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struct nvhost_channel *nvhost_alloc_channel_internal(int chindex,
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int max_channels);
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void nvhost_channel_init_gather_filter(struct platform_device *pdev,
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struct nvhost_channel *ch);
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bool nvhost_channel_is_reset_required(struct nvhost_channel *ch);
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int nvhost_channel_abort(struct nvhost_device_data *pdata,
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void *identifier);
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int nvhost_channel_map_with_vm(struct nvhost_device_data *pdata,
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struct nvhost_channel **channel,
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void *identifier,
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void *vm_identifier);
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int nvhost_channel_nb_channels(struct nvhost_master *host);
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int nvhost_channel_ch_base(struct nvhost_master *host);
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int nvhost_channel_ch_limit(struct nvhost_master *host);
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int nvhost_channel_get_id_from_index(struct nvhost_master *host, int index);
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int nvhost_channel_get_index_from_id(struct nvhost_master *host, int chid);
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int nvhost_channel_set_syncpoint_name(struct nvhost_syncpt *sp, u32 syncpt_id,
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const char *syncpt_name);
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#endif
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