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/regulator/consumer.h>
 11#include <linux/spinlock.h>
 12#include <drm/drm_device.h>
 13#include <drm/drm_mm.h>
 14#include <drm/gpu_scheduler.h>
 15
 16#include "panfrost_devfreq.h"
 17
 18struct panfrost_device;
 19struct panfrost_mmu;
 20struct panfrost_job_slot;
 21struct panfrost_job;
 22struct panfrost_perfcnt;
 23
 24#define NUM_JOB_SLOTS 3
 25#define MAX_PM_DOMAINS 3
 26
 27struct panfrost_features {
 28	u16 id;
 29	u16 revision;
 30
 31	u64 shader_present;
 32	u64 tiler_present;
 33	u64 l2_present;
 34	u64 stack_present;
 35	u32 as_present;
 36	u32 js_present;
 37
 38	u32 l2_features;
 39	u32 core_features;
 40	u32 tiler_features;
 41	u32 mem_features;
 42	u32 mmu_features;
 43	u32 thread_features;
 44	u32 max_threads;
 45	u32 thread_max_workgroup_sz;
 46	u32 thread_max_barrier_sz;
 47	u32 coherency_features;
 48	u32 afbc_features;
 49	u32 texture_features[4];
 50	u32 js_features[16];
 51
 52	u32 nr_core_groups;
 53	u32 thread_tls_alloc;
 54
 55	unsigned long hw_features[64 / BITS_PER_LONG];
 56	unsigned long hw_issues[64 / BITS_PER_LONG];
 57};
 58
 59/*
 60 * Features that cannot be automatically detected and need matching using the
 61 * compatible string, typically SoC-specific.
 62 */
 63struct panfrost_compatible {
 64	/* Supplies count and names. */
 65	int num_supplies;
 66	const char * const *supply_names;
 67	/*
 68	 * Number of power domains required, note that values 0 and 1 are
 69	 * handled identically, as only values > 1 need special handling.
 70	 */
 71	int num_pm_domains;
 72	/* Only required if num_pm_domains > 1. */
 73	const char * const *pm_domain_names;
 74
 75	/* Vendor implementation quirks callback */
 76	void (*vendor_quirk)(struct panfrost_device *pfdev);
 77};
 78
 79struct panfrost_device {
 80	struct device *dev;
 81	struct drm_device *ddev;
 82	struct platform_device *pdev;
 83
 84	void __iomem *iomem;
 85	struct clk *clock;
 86	struct clk *bus_clock;
 87	struct regulator_bulk_data *regulators;
 88	struct reset_control *rstc;
 89	/* pm_domains for devices with more than one. */
 90	struct device *pm_domain_devs[MAX_PM_DOMAINS];
 91	struct device_link *pm_domain_links[MAX_PM_DOMAINS];
 92	bool coherent;
 93
 94	struct panfrost_features features;
 95	const struct panfrost_compatible *comp;
 96
 97	spinlock_t as_lock;
 98	unsigned long as_in_use_mask;
 99	unsigned long as_alloc_mask;
100	struct list_head as_lru_list;
101
102	struct panfrost_job_slot *js;
103
104	struct panfrost_job *jobs[NUM_JOB_SLOTS];
105	struct list_head scheduled_jobs;
106
107	struct panfrost_perfcnt *perfcnt;
108
109	struct mutex sched_lock;
110
111	struct {
112		struct work_struct work;
113		atomic_t pending;
114	} reset;
115
116	struct mutex shrinker_lock;
117	struct list_head shrinker_list;
118	struct shrinker shrinker;
119
120	struct panfrost_devfreq pfdevfreq;
121};
122
123struct panfrost_mmu {
124	struct panfrost_device *pfdev;
125	struct kref refcount;
126	struct io_pgtable_cfg pgtbl_cfg;
127	struct io_pgtable_ops *pgtbl_ops;
128	struct drm_mm mm;
129	spinlock_t mm_lock;
130	int as;
131	atomic_t as_count;
132	struct list_head list;
133};
134
135struct panfrost_file_priv {
136	struct panfrost_device *pfdev;
137
138	struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
139
140	struct panfrost_mmu *mmu;
141};
142
143static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
144{
145	return ddev->dev_private;
146}
147
148static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id)
149{
150	s32 match_id = pfdev->features.id;
151
152	if (match_id & 0xf000)
153		match_id &= 0xf00f;
154	return match_id - id;
155}
156
157static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev)
158{
159	return panfrost_model_cmp(pfdev, 0x1000) >= 0;
160}
161
162static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id)
163{
164	return !panfrost_model_cmp(pfdev, id);
165}
166
167int panfrost_unstable_ioctl_check(void);
168
169int panfrost_device_init(struct panfrost_device *pfdev);
170void panfrost_device_fini(struct panfrost_device *pfdev);
171void panfrost_device_reset(struct panfrost_device *pfdev);
172
173int panfrost_device_resume(struct device *dev);
174int panfrost_device_suspend(struct device *dev);
175
176const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code);
177
178#endif