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