1/* SPDX-License-Identifier: GPL-2.0 */
  2/* Copyright 2018 Marty E. Plummer <hanetzer@startmail.com> */
  3/* Copyright 2019 Linaro, Ltd, Rob Herring <robh@kernel.org> */
  4
  5#ifndef __PANFROST_DEVICE_H__
  6#define __PANFROST_DEVICE_H__
  7
  8#include <linux/atomic.h>
  9#include <linux/io-pgtable.h>
 10#include <linux/spinlock.h>
 11#include <drm/drm_device.h>
 12#include <drm/drm_mm.h>
 13#include <drm/gpu_scheduler.h>
 14
 15struct panfrost_device;
 16struct panfrost_mmu;
 17struct panfrost_job_slot;
 18struct panfrost_job;
 19struct panfrost_perfcnt;
 20
 21#define NUM_JOB_SLOTS 3
 22
 23struct panfrost_features {
 24	u16 id;
 25	u16 revision;
 26
 27	u64 shader_present;
 28	u64 tiler_present;
 29	u64 l2_present;
 30	u64 stack_present;
 31	u32 as_present;
 32	u32 js_present;
 33
 34	u32 l2_features;
 35	u32 core_features;
 36	u32 tiler_features;
 37	u32 mem_features;
 38	u32 mmu_features;
 39	u32 thread_features;
 40	u32 max_threads;
 41	u32 thread_max_workgroup_sz;
 42	u32 thread_max_barrier_sz;
 43	u32 coherency_features;
 44	u32 texture_features[4];
 45	u32 js_features[16];
 46
 47	u32 nr_core_groups;
 48	u32 thread_tls_alloc;
 49
 50	unsigned long hw_features[64 / BITS_PER_LONG];
 51	unsigned long hw_issues[64 / BITS_PER_LONG];
 52};
 53
 54struct panfrost_devfreq_slot {
 55	ktime_t busy_time;
 56	ktime_t idle_time;
 57	ktime_t time_last_update;
 58	bool busy;
 59};
 60
 61struct panfrost_device {
 62	struct device *dev;
 63	struct drm_device *ddev;
 64	struct platform_device *pdev;
 65
 66	void __iomem *iomem;
 67	struct clk *clock;
 68	struct clk *bus_clock;
 69	struct regulator *regulator;
 70	struct reset_control *rstc;
 71
 72	struct panfrost_features features;
 73
 74	spinlock_t as_lock;
 75	unsigned long as_in_use_mask;
 76	unsigned long as_alloc_mask;
 77	struct list_head as_lru_list;
 78
 79	struct panfrost_job_slot *js;
 80
 81	struct panfrost_job *jobs[NUM_JOB_SLOTS];
 82	struct list_head scheduled_jobs;
 83
 84	struct panfrost_perfcnt *perfcnt;
 85
 86	struct mutex sched_lock;
 87	struct mutex reset_lock;
 88
 89	struct mutex shrinker_lock;
 90	struct list_head shrinker_list;
 91	struct shrinker shrinker;
 92
 93	struct {
 94		struct devfreq *devfreq;
 95		struct thermal_cooling_device *cooling;
 96		unsigned long cur_freq;
 97		unsigned long cur_volt;
 98		struct panfrost_devfreq_slot slot[NUM_JOB_SLOTS];
 99	} devfreq;
100};
101
102struct panfrost_mmu {
103	struct io_pgtable_cfg pgtbl_cfg;
104	struct io_pgtable_ops *pgtbl_ops;
105	int as;
106	atomic_t as_count;
107	struct list_head list;
108};
109
110struct panfrost_file_priv {
111	struct panfrost_device *pfdev;
112
113	struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
114
115	struct panfrost_mmu mmu;
116	struct drm_mm mm;
117	spinlock_t mm_lock;
118};
119
120static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
121{
122	return ddev->dev_private;
123}
124
125static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id)
126{
127	s32 match_id = pfdev->features.id;
128
129	if (match_id & 0xf000)
130		match_id &= 0xf00f;
131	return match_id - id;
132}
133
134static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev)
135{
136	return panfrost_model_cmp(pfdev, 0x1000) >= 0;
137}
138
139static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id)
140{
141	return !panfrost_model_cmp(pfdev, id);
142}
143
144int panfrost_unstable_ioctl_check(void);
145
146int panfrost_device_init(struct panfrost_device *pfdev);
147void panfrost_device_fini(struct panfrost_device *pfdev);
148void panfrost_device_reset(struct panfrost_device *pfdev);
149
150int panfrost_device_resume(struct device *dev);
151int panfrost_device_suspend(struct device *dev);
152
153const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code);
154
155#endif