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When there is a single power domain per device, the core will ensure the power domain is switched on (so it is technically equivalent to having not power domain specified at all). However, when there are multiple domains, as in MT8183 Bifrost GPU, we need to handle them in driver code. Signed-off-by: Nicolas Boichat <drinkcat@chromium.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Steven Price <steven.price@arm.com> Signed-off-by: Rob Herring <robh@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200207052627.130118-6-drinkcat@chromium.org
174 lines
4.0 KiB
C
174 lines
4.0 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/atomic.h>
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#include <linux/io-pgtable.h>
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#include <linux/regulator/consumer.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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struct panfrost_perfcnt;
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#define NUM_JOB_SLOTS 3
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#define MAX_REGULATORS 2
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#define MAX_PM_DOMAINS 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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u32 thread_tls_alloc;
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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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/*
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* Features that cannot be automatically detected and need matching using the
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* compatible string, typically SoC-specific.
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*/
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struct panfrost_compatible {
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/* Supplies count and names. */
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int num_supplies;
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const char * const *supply_names;
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/*
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* Number of power domains required, note that values 0 and 1 are
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* handled identically, as only values > 1 need special handling.
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*/
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int num_pm_domains;
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/* Only required if num_pm_domains > 1. */
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const char * const *pm_domain_names;
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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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void __iomem *iomem;
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struct clk *clock;
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struct clk *bus_clock;
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struct regulator_bulk_data regulators[MAX_REGULATORS];
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struct reset_control *rstc;
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/* pm_domains for devices with more than one. */
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struct device *pm_domain_devs[MAX_PM_DOMAINS];
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struct device_link *pm_domain_links[MAX_PM_DOMAINS];
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struct panfrost_features features;
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const struct panfrost_compatible *comp;
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spinlock_t as_lock;
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unsigned long as_in_use_mask;
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unsigned long as_alloc_mask;
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struct list_head as_lru_list;
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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 panfrost_perfcnt *perfcnt;
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struct mutex sched_lock;
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struct mutex reset_lock;
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struct mutex shrinker_lock;
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struct list_head shrinker_list;
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struct shrinker shrinker;
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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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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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atomic_t busy_count;
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} devfreq;
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};
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struct panfrost_mmu {
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struct io_pgtable_cfg pgtbl_cfg;
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struct io_pgtable_ops *pgtbl_ops;
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int as;
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atomic_t as_count;
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struct list_head list;
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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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struct panfrost_mmu mmu;
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struct drm_mm mm;
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spinlock_t mm_lock;
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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_is_bifrost(struct panfrost_device *pfdev)
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{
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return panfrost_model_cmp(pfdev, 0x1000) >= 0;
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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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void panfrost_device_reset(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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