Markus Fritsche
d4d003f977
Builds rkopnu.ko (rocket clone, renamed module) against 7.0.0-rc3-npuclk+. Baseline to swap rocket's uAPI for the rknpu 6-ioctl ABI librknnrt calls. Includes rknpu_ioctl.h (target ABI) + README roadmap. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EWpfhDgYNA21tETDP9ueBE
57 lines
2.0 KiB
C
57 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/* Copyright 2024-2025 Tomeu Vizoso <tomeu@tomeuvizoso.net> */
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#ifndef __ROCKET_DEVICE_H__
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#define __ROCKET_DEVICE_H__
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#include <drm/drm_device.h>
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#include <linux/clk.h>
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#include <linux/container_of.h>
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#include <linux/iommu.h>
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#include <linux/platform_device.h>
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#include "rocket_core.h"
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struct rocket_device {
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struct drm_device ddev;
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struct mutex sched_lock;
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struct rocket_core *cores;
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unsigned int num_cores;
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/*
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* The three RK3588 NPU cores (PD_NPUTOP/core 0, PD_NPU1/core 1,
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* PD_NPU2/core 2) share one physical NIU/interconnect and PMU
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* idle-request handshake. genpd has no notion that these three
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* otherwise-independent power domains share hardware: it will happily
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* let one domain issue an idle-request while a sibling domain still
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* has live AXI traffic in flight, which races the shared handshake
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* and can fault with an asynchronous SError (seen on this board under
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* autosuspend + sustained multi-core load).
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*
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* Fix: never let genpd make an independent per-core gating decision.
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* Every in-flight job, on any core, holds one reference on this
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* refcount. While it is non-zero all three cores' power domains and
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* clocks are held resumed as a unit (vendor rknpu driver does the
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* same: npu0/npu1/npu2 are resumed and suspended together under one
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* lock, never independently). Only once the last job anywhere
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* completes does the whole unit unwind. See rocket_device_pm_get()/
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* rocket_device_pm_put() in rocket_device.c.
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*/
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struct mutex pm_lock;
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unsigned int pm_refcount;
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};
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struct rocket_device *rocket_device_init(struct platform_device *pdev,
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const struct drm_driver *rocket_drm_driver);
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void rocket_device_fini(struct rocket_device *rdev);
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int rocket_device_pm_get(struct rocket_device *rdev);
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void rocket_device_pm_put(struct rocket_device *rdev);
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void rocket_device_pm_put_noidle(struct rocket_device *rdev);
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#define to_rocket_device(drm_dev) \
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((struct rocket_device *)(container_of((drm_dev), struct rocket_device, ddev)))
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#endif /* __ROCKET_DEVICE_H__ */
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