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f3ba91228e
This adds the initial driver for panfrost which supports Arm Mali Midgard and Bifrost family of GPUs. Currently, only the T860 and T760 Midgard GPUs have been tested. v2: - Add GPU reset on job hangs (Tomeu) - Add RuntimePM and devfreq support (Tomeu) - Fix T760 support (Tomeu) - Add a TODO file (Rob, Tomeu) - Support multiple in fences (Tomeu) - Drop support for shared fences (Tomeu) - Fill in MMU de-init (Rob) - Move register definitions back to single header (Rob) - Clean-up hardcoded job submit todos (Rob) - Implement feature setup based on features/issues (Rob) - Add remaining Midgard DT compatible strings (Rob) v3: - Add support for reset lines (Neil) - Add a MAINTAINERS entry (Rob) - Call dma_set_mask_and_coherent (Rob) - Do MMU invalidate on map and unmap. Restructure to do a single operation per map/unmap call. (Rob) - Add a missing explicit padding to struct drm_panfrost_create_bo (Rob) - Fix 0-day error: "panfrost_devfreq.c:151:9-16: ERROR: PTR_ERR applied after initialization to constant on line 150" - Drop HW_FEATURE_AARCH64_MMU conditional (Rob) - s/DRM_PANFROST_PARAM_GPU_ID/DRM_PANFROST_PARAM_GPU_PROD_ID/ (Rob) - Check drm_gem_shmem_prime_import_sg_table() error code (Rob) - Re-order power on sequence (Rob) - Move panfrost_acquire_object_fences() before scheduling job (Rob) - Add NULL checks on array pointers in job clean-up (Rob) - Rework devfreq (Tomeu) - Fix devfreq init with no regulator (Rob) - Various WS and comments clean-up (Rob) Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <maxime.ripard@bootlin.com> Cc: Sean Paul <sean@poorly.run> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Lyude Paul <lyude@redhat.com> Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Reviewed-by: Eric Anholt <eric@anholt.net> Reviewed-by: Steven Price <steven.price@arm.com> Signed-off-by: Marty E. Plummer <hanetzer@startmail.com> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Rob Herring <robh@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190409205427.6943-4-robh@kernel.org
125 lines
2.6 KiB
C
125 lines
2.6 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 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 {
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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_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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