92f0ad0b1d
We plan to expose performance counters through 2 driver specific ioctls until there's a solution to expose them in a generic way. In order to be able to deprecate those ioctls when this new infrastructure is in place we add an unsafe module parameter that will keep those ioctls hidden unless it's set to true (which also has the effect of tainting the kernel). All unstable ioctl handlers should use panfrost_unstable_ioctl_check() to check whether they're supposed to handle the request or reject it with ENOSYS. Suggested-by: Emil Velikov <emil.velikov@collabora.com> Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Signed-off-by: Rob Herring <robh@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190618081648.17297-3-boris.brezillon@collabora.com
128 lines
2.7 KiB
C
128 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright 2018 Marty E. Plummer <hanetzer@startmail.com> */
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/* Copyright 2019 Linaro, Ltd, Rob Herring <robh@kernel.org> */
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#ifndef __PANFROST_DEVICE_H__
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#define __PANFROST_DEVICE_H__
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#include <linux/spinlock.h>
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#include <drm/drm_device.h>
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#include <drm/drm_mm.h>
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#include <drm/gpu_scheduler.h>
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struct panfrost_device;
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struct panfrost_mmu;
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struct panfrost_job_slot;
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struct panfrost_job;
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#define NUM_JOB_SLOTS 3
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struct panfrost_features {
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u16 id;
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u16 revision;
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u64 shader_present;
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u64 tiler_present;
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u64 l2_present;
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u64 stack_present;
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u32 as_present;
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u32 js_present;
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u32 l2_features;
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u32 core_features;
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u32 tiler_features;
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u32 mem_features;
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u32 mmu_features;
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u32 thread_features;
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u32 max_threads;
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u32 thread_max_workgroup_sz;
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u32 thread_max_barrier_sz;
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u32 coherency_features;
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u32 texture_features[4];
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u32 js_features[16];
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u32 nr_core_groups;
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unsigned long hw_features[64 / BITS_PER_LONG];
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unsigned long hw_issues[64 / BITS_PER_LONG];
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};
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struct panfrost_devfreq_slot {
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ktime_t busy_time;
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ktime_t idle_time;
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ktime_t time_last_update;
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bool busy;
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};
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struct panfrost_device {
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struct device *dev;
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struct drm_device *ddev;
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struct platform_device *pdev;
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spinlock_t hwaccess_lock;
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struct drm_mm mm;
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spinlock_t mm_lock;
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void __iomem *iomem;
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struct clk *clock;
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struct clk *bus_clock;
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struct regulator *regulator;
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struct reset_control *rstc;
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struct panfrost_features features;
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struct panfrost_mmu *mmu;
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struct panfrost_job_slot *js;
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struct panfrost_job *jobs[NUM_JOB_SLOTS];
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struct list_head scheduled_jobs;
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struct mutex sched_lock;
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struct mutex reset_lock;
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struct {
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struct devfreq *devfreq;
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struct thermal_cooling_device *cooling;
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unsigned long cur_freq;
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unsigned long cur_volt;
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struct panfrost_devfreq_slot slot[NUM_JOB_SLOTS];
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} devfreq;
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};
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struct panfrost_file_priv {
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struct panfrost_device *pfdev;
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struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
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};
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static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
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{
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return ddev->dev_private;
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}
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static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id)
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{
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s32 match_id = pfdev->features.id;
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if (match_id & 0xf000)
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match_id &= 0xf00f;
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return match_id - id;
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}
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static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id)
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{
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return !panfrost_model_cmp(pfdev, id);
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}
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int panfrost_unstable_ioctl_check(void);
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int panfrost_device_init(struct panfrost_device *pfdev);
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void panfrost_device_fini(struct panfrost_device *pfdev);
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int panfrost_device_resume(struct device *dev);
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int panfrost_device_suspend(struct device *dev);
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const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code);
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#endif
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