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host1x_emu: Adding API dispatch functionality
Adding dynamic APi dispatch functionality in host1x-fence modue. This CL exports new host1x wrapper API, which can be called by client kernel modules. The wrapper API dispatch call to either Host1x module or Host1x-EMU depending if the host1x-emu driver registered its interface during its probe. Bug 5064819 Change-Id: I49445cdce7c3795a2c94fde9d0871da393993554 Signed-off-by: amitabhd <amitabhd@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3306857 GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com> Reviewed-by: Leslin Varghese <lvarghese@nvidia.com> Reviewed-by: Raghavendra Vishnu Kumar <rvk@nvidia.com>
This commit is contained in:
amitabhd
150
drivers/gpu/host1x-fence/include/linux/host1x-dispatch_api.h
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150
drivers/gpu/host1x-fence/include/linux/host1x-dispatch_api.h
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/*
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* SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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* SPDX-License-Identifier: GPL-2.0-only
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*/
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#ifndef __HOST1X_DISPATCH_API_H
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#define __HOST1X_DISPATCH_API_H
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/dma-fence.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/timekeeping.h>
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#define HOST1X_SYNCPT_CLIENT_MANAGED (1 << 0)
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#define HOST1X_SYNCPT_HAS_BASE (1 << 1)
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#define HOST1X_SYNCPT_GPU (1 << 2)
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#define HOST1X_GLOBAL_TO_LOCAL_SYNCPOINT(global_syncpoint_id) \
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(global_syncpoint_id & 0xFFFFFF)
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#define HOST1X_INSTANCE_NUM_FROM_GLOBAL_SYNCPOINT(global_syncpoint_id) \
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((global_syncpoint_id & 0xFF000000) >> 24)
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#define HOST1X_LOCAL_TO_GLOBAL_SYNCPOINT(local_syncpoint_id, instance) \
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((instance << 24) | (local_syncpoint_id))
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#define HOST1X_EMU_EXPORT_CALL(...) wrap_ ## __VA_ARGS__
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struct host1x;
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struct host1x_syncpt;
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// fence.c
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struct dma_fence* wrap_host1x_fence_create(struct host1x_syncpt *sp,
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u32 threshold,
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bool timeout);
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int wrap_host1x_fence_extract(struct dma_fence *dfence, u32 *id, u32 *threshold);
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void wrap_host1x_fence_cancel(struct dma_fence *dfence);
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void wrap_host1x_syncpt_fence_scan(struct host1x_syncpt *sp);
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// Syncpt.c
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u64 wrap_host1x_get_dma_mask(struct host1x *host1x);
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struct host1x_syncpt* wrap_host1x_syncpt_get(
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struct host1x_syncpt *sp);
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struct host1x_syncpt* wrap_host1x_syncpt_get_by_id(
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struct host1x *host, unsigned int id);
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struct host1x_syncpt* wrap_host1x_syncpt_get_by_id_noref(struct host1x *host, unsigned int id);
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u32 wrap_host1x_syncpt_read(struct host1x_syncpt *sp);
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u32 wrap_host1x_syncpt_read_min(struct host1x_syncpt *sp);
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u32 wrap_host1x_syncpt_read_max(struct host1x_syncpt *sp);
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int wrap_host1x_syncpt_incr(struct host1x_syncpt *sp);
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u32 wrap_host1x_syncpt_incr_max(struct host1x_syncpt *sp, u32 incrs);
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struct host1x_syncpt* wrap_host1x_syncpt_alloc(struct host1x *host,
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unsigned long flags,
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const char *name);
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void wrap_host1x_syncpt_put(struct host1x_syncpt *sp);
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u32 wrap_host1x_syncpt_id(struct host1x_syncpt *sp);
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int wrap_host1x_syncpt_wait_ts(struct host1x_syncpt *sp,
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u32 thresh, long timeout, u32 *value, ktime_t *ts);
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int wrap_host1x_syncpt_wait(struct host1x_syncpt *sp,
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u32 thresh, long timeout, u32 *value);
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int wrap_host1x_fence_get_node(struct dma_fence *fence);
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//nvhost.h
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void wrap_host1x_writel(struct platform_device *pdev, u32 r, u32 v);
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struct platform_device* wrap_nvhost_get_default_device(void);
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struct host1x* wrap_nvhost_get_host1x(struct platform_device *pdev);
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int wrap_nvhost_client_device_get_resources(struct platform_device *pdev);
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int wrap_nvhost_client_device_init(struct platform_device *pdev);
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int wrap_nvhost_client_device_release(struct platform_device *pdev);
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u32 wrap_nvhost_get_syncpt_host_managed(struct platform_device *pdev,
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u32 param, const char *syncpt_name);
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u32 wrap_nvhost_get_syncpt_client_managed(struct platform_device *pdev,
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const char *syncpt_name);
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u32 wrap_nvhost_get_syncpt_gpu_managed(struct platform_device *pdev,
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const char *syncpt_name);
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void wrap_nvhost_syncpt_put_ref_ext(struct platform_device *pdev, u32 id);
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bool wrap_nvhost_syncpt_is_valid_pt_ext(struct platform_device *pdev, u32 id);
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int wrap_nvhost_syncpt_is_expired_ext(struct platform_device *pdev, u32 id,
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u32 thresh);
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void wrap_nvhost_syncpt_set_min_update(struct platform_device *pdev, u32 id, u32 val);
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int wrap_nvhost_syncpt_read_ext_check(struct platform_device *pdev, u32 id, u32 *val);
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u32 wrap_nvhost_syncpt_read_maxval(struct platform_device *pdev, u32 id);
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u32 wrap_nvhost_syncpt_incr_max_ext(struct platform_device *pdev, u32 id, u32 incrs);
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u32 wrap_nvhost_syncpt_unit_interface_get_byte_offset_ext(struct platform_device *pdev,
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u32 syncpt_id);
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u32 wrap_nvhost_syncpt_unit_interface_get_byte_offset(u32 syncpt_id);
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int wrap_nvhost_syncpt_unit_interface_get_aperture(struct platform_device *pdev,
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u64 *base, size_t *size);
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int wrap_nvhost_syncpt_unit_interface_init(struct platform_device *pdev);
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void wrap_nvhost_syncpt_unit_interface_deinit(struct platform_device *pdev);
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dma_addr_t wrap_nvhost_syncpt_address(struct platform_device *pdev, u32 id);
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int wrap_nvhost_intr_register_notifier(struct platform_device *pdev,
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u32 id, u32 thresh,
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void (*callback)(void *data),
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void *private_data);
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int wrap_nvhost_module_init(struct platform_device *pdev);
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void wrap_nvhost_module_deinit(struct platform_device *pdev);
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void wrap_nvhost_module_reset(struct platform_device *pdev, bool reboot);
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int wrap_nvhost_module_busy(struct platform_device *dev);
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inline void wrap_nvhost_module_idle(struct platform_device *pdev);
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void wrap_nvhost_module_idle_mult(struct platform_device *pdev, int refs);
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#endif /*__HOST1X_DISPATCH_API_H */
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