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Using the DRM GPU scheduler infrastructure, with a scheduler for each core. Userspace can decide for a series of tasks to be executed sequentially in the same core, so SRAM locality can be taken advantage of. The job submission code was initially based on Panfrost. v2: - Remove hardcoded number of cores - Misc. style fixes (Jeffrey Hugo) - Repack IOCTL struct (Jeffrey Hugo) v3: - Adapt to a split of the register block in the DT bindings (Nicolas Frattaroli) - Make use of GPL-2.0-only for the copyright notice (Jeff Hugo) - Use drm_* logging functions (Thomas Zimmermann) - Rename reg i/o macros (Thomas Zimmermann) - Add padding to ioctls and check for zero (Jeff Hugo) - Improve error handling (Nicolas Frattaroli) v6: - Use mutexes guard (Markus Elfring) - Use u64_to_user_ptr (Jeff Hugo) - Drop rocket_fence (Rob Herring) v7: - Assign its own IOMMU domain to each client, for isolation (Daniel Stone and Robin Murphy) v8: - Use reset lines to reset the cores (Robin Murphy) - Use the macros to compute the values for the bitfields (Robin Murphy) - More descriptive name for the IRQ (Robin Murphy) - Simplify job interrupt handing (Robin Murphy) - Correctly acquire a reference to the IOMMU (Robin Murphy) - Specify the size of the embedded structs in the IOCTLs for future extensibility (Rob Herring) - Expose only 32 bits for the address of the regcmd BO (Robin Murphy) Tested-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com> Signed-off-by: Tomeu Vizoso <tomeu@tomeuvizoso.net> Signed-off-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com> Link: https://lore.kernel.org/r/20250721-6-10-rocket-v9-4-77ebd484941e@tomeuvizoso.net
31 lines
794 B
C
31 lines
794 B
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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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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#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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