1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2017 The Linux Foundation. All rights reserved. */
#ifndef _A6XX_GMU_H_
#define _A6XX_GMU_H_
#include <linux/iopoll.h>
#include <linux/interrupt.h>
#include "msm_drv.h"
#include "a6xx_hfi.h"
struct a6xx_gmu_bo {
void *virt;
size_t size;
u64 iova;
struct page **pages;
};
/*
* These define the different GMU wake up options - these define how both the
* CPU and the GMU bring up the hardware
*/
/* THe GMU has already been booted and the rentention registers are active */
#define GMU_WARM_BOOT 0
/* the GMU is coming up for the first time or back from a power collapse */
#define GMU_COLD_BOOT 1
/* The GMU is being soft reset after a fault */
#define GMU_RESET 2
/*
* These define the level of control that the GMU has - the higher the number
* the more things that the GMU hardware controls on its own.
*/
/* The GMU does not do any idle state management */
#define GMU_IDLE_STATE_ACTIVE 0
/* The GMU manages SPTP power collapse */
#define GMU_IDLE_STATE_SPTP 2
/* The GMU does automatic IFPC (intra-frame power collapse) */
#define GMU_IDLE_STATE_IFPC 3
struct a6xx_gmu {
struct device *dev;
void * __iomem mmio;
int hfi_irq;
int gmu_irq;
struct regulator *gx;
struct iommu_domain *domain;
u64 uncached_iova_base;
int idle_level;
struct a6xx_gmu_bo *hfi;
struct a6xx_gmu_bo *debug;
int nr_clocks;
struct clk_bulk_data *clocks;
struct clk *core_clk;
int nr_gpu_freqs;
unsigned long gpu_freqs[16];
u32 gx_arc_votes[16];
int nr_gmu_freqs;
unsigned long gmu_freqs[4];
u32 cx_arc_votes[4];
struct a6xx_hfi_queue queues[2];
struct tasklet_struct hfi_tasklet;
};
static inline u32 gmu_read(struct a6xx_gmu *gmu, u32 offset)
{
return msm_readl(gmu->mmio + (offset << 2));
}
static inline void gmu_write(struct a6xx_gmu *gmu, u32 offset, u32 value)
{
return msm_writel(value, gmu->mmio + (offset << 2));
}
static inline void gmu_rmw(struct a6xx_gmu *gmu, u32 reg, u32 mask, u32 or)
{
u32 val = gmu_read(gmu, reg);
val &= ~mask;
gmu_write(gmu, reg, val | or);
}
static inline u64 gmu_read64(struct a6xx_gmu *gmu, u32 lo, u32 hi)
{
u64 val;
val = (u64) msm_readl(gmu->mmio + (lo << 2));
val |= ((u64) msm_readl(gmu->mmio + (hi << 2)) << 32);
return val;
}
#define gmu_poll_timeout(gmu, addr, val, cond, interval, timeout) \
readl_poll_timeout((gmu)->mmio + ((addr) << 2), val, cond, \
interval, timeout)
/*
* These are the available OOB (out of band requests) to the GMU where "out of
* band" means that the CPU talks to the GMU directly and not through HFI.
* Normally this works by writing a ITCM/DTCM register and then triggering a
* interrupt (the "request" bit) and waiting for an acknowledgment (the "ack"
* bit). The state is cleared by writing the "clear' bit to the GMU interrupt.
*
* These are used to force the GMU/GPU to stay on during a critical sequence or
* for hardware workarounds.
*/
enum a6xx_gmu_oob_state {
GMU_OOB_BOOT_SLUMBER = 0,
GMU_OOB_GPU_SET,
GMU_OOB_DCVS_SET,
};
/* These are the interrupt / ack bits for each OOB request that are set
* in a6xx_gmu_set_oob and a6xx_clear_oob
*/
/*
* Let the GMU know that a boot or slumber operation has started. The value in
* REG_A6XX_GMU_BOOT_SLUMBER_OPTION lets the GMU know which operation we are
* doing
*/
#define GMU_OOB_BOOT_SLUMBER_REQUEST 22
#define GMU_OOB_BOOT_SLUMBER_ACK 30
#define GMU_OOB_BOOT_SLUMBER_CLEAR 30
/*
* Set a new power level for the GPU when the CPU is doing frequency scaling
*/
#define GMU_OOB_DCVS_REQUEST 23
#define GMU_OOB_DCVS_ACK 31
#define GMU_OOB_DCVS_CLEAR 31
/*
* Let the GMU know to not turn off any GPU registers while the CPU is in a
* critical section
*/
#define GMU_OOB_GPU_SET_REQUEST 16
#define GMU_OOB_GPU_SET_ACK 24
#define GMU_OOB_GPU_SET_CLEAR 24
void a6xx_hfi_init(struct a6xx_gmu *gmu);
int a6xx_hfi_start(struct a6xx_gmu *gmu, int boot_state);
void a6xx_hfi_stop(struct a6xx_gmu *gmu);
#endif
|
