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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright 2018 Marty E. Plummer <hanetzer@startmail.com> */
/* Copyright 2019 Linaro, Ltd, Rob Herring <robh@kernel.org> */
#ifndef __PANFROST_DEVICE_H__
#define __PANFROST_DEVICE_H__
#include <linux/atomic.h>
#include <linux/io-pgtable.h>
#include <linux/regulator/consumer.h>
#include <linux/spinlock.h>
#include <drm/drm_device.h>
#include <drm/drm_mm.h>
#include <drm/gpu_scheduler.h>
#include "panfrost_devfreq.h"
struct panfrost_device;
struct panfrost_mmu;
struct panfrost_job_slot;
struct panfrost_job;
struct panfrost_perfcnt;
#define NUM_JOB_SLOTS 3
#define MAX_PM_DOMAINS 3
struct panfrost_features {
u16 id;
u16 revision;
u64 shader_present;
u64 tiler_present;
u64 l2_present;
u64 stack_present;
u32 as_present;
u32 js_present;
u32 l2_features;
u32 core_features;
u32 tiler_features;
u32 mem_features;
u32 mmu_features;
u32 thread_features;
u32 max_threads;
u32 thread_max_workgroup_sz;
u32 thread_max_barrier_sz;
u32 coherency_features;
u32 texture_features[4];
u32 js_features[16];
u32 nr_core_groups;
u32 thread_tls_alloc;
unsigned long hw_features[64 / BITS_PER_LONG];
unsigned long hw_issues[64 / BITS_PER_LONG];
};
/*
* Features that cannot be automatically detected and need matching using the
* compatible string, typically SoC-specific.
*/
struct panfrost_compatible {
/* Supplies count and names. */
int num_supplies;
const char * const *supply_names;
/*
* Number of power domains required, note that values 0 and 1 are
* handled identically, as only values > 1 need special handling.
*/
int num_pm_domains;
/* Only required if num_pm_domains > 1. */
const char * const *pm_domain_names;
/* Vendor implementation quirks callback */
void (*vendor_quirk)(struct panfrost_device *pfdev);
};
struct panfrost_device {
struct device *dev;
struct drm_device *ddev;
struct platform_device *pdev;
void __iomem *iomem;
struct clk *clock;
struct clk *bus_clock;
struct regulator_bulk_data *regulators;
struct reset_control *rstc;
/* pm_domains for devices with more than one. */
struct device *pm_domain_devs[MAX_PM_DOMAINS];
struct device_link *pm_domain_links[MAX_PM_DOMAINS];
bool coherent;
struct panfrost_features features;
const struct panfrost_compatible *comp;
spinlock_t as_lock;
unsigned long as_in_use_mask;
unsigned long as_alloc_mask;
struct list_head as_lru_list;
struct panfrost_job_slot *js;
struct panfrost_job *jobs[NUM_JOB_SLOTS];
struct list_head scheduled_jobs;
struct panfrost_perfcnt *perfcnt;
struct mutex sched_lock;
struct {
struct work_struct work;
atomic_t pending;
} reset;
struct mutex shrinker_lock;
struct list_head shrinker_list;
struct shrinker shrinker;
struct panfrost_devfreq pfdevfreq;
};
struct panfrost_mmu {
struct io_pgtable_cfg pgtbl_cfg;
struct io_pgtable_ops *pgtbl_ops;
int as;
atomic_t as_count;
struct list_head list;
};
struct panfrost_file_priv {
struct panfrost_device *pfdev;
struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
struct panfrost_mmu mmu;
struct drm_mm mm;
spinlock_t mm_lock;
};
static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
{
return ddev->dev_private;
}
static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id)
{
s32 match_id = pfdev->features.id;
if (match_id & 0xf000)
match_id &= 0xf00f;
return match_id - id;
}
static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev)
{
return panfrost_model_cmp(pfdev, 0x1000) >= 0;
}
static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id)
{
return !panfrost_model_cmp(pfdev, id);
}
int panfrost_unstable_ioctl_check(void);
int panfrost_device_init(struct panfrost_device *pfdev);
void panfrost_device_fini(struct panfrost_device *pfdev);
void panfrost_device_reset(struct panfrost_device *pfdev);
int panfrost_device_resume(struct device *dev);
int panfrost_device_suspend(struct device *dev);
const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code);
#endif
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