LXR linux/drivers/gpu/drm/lima/lima

   1/* SPDX-License-Identifier: GPL-2.0 OR MIT */
   2/* Copyright 2018-2019 Qiang Yu <yuq825@gmail.com> */
   3
   4#ifndef __LIMA_DEVICE_H__
   5#define __LIMA_DEVICE_H__
   6
   7#include <drm/drm_device.h>
   8#include <linux/delay.h>
   9#include <linux/list.h>
  10#include <linux/mutex.h>
  11
  12#include "lima_sched.h"
  13#include "lima_dump.h"
  14#include "lima_devfreq.h"
  15
  16enum lima_gpu_id {
  17        lima_gpu_mali400 = 0,
  18        lima_gpu_mali450,
  19        lima_gpu_num,
  20};
  21
  22enum lima_ip_id {
  23        lima_ip_pmu,
  24        lima_ip_gpmmu,
  25        lima_ip_ppmmu0,
  26        lima_ip_ppmmu1,
  27        lima_ip_ppmmu2,
  28        lima_ip_ppmmu3,
  29        lima_ip_ppmmu4,
  30        lima_ip_ppmmu5,
  31        lima_ip_ppmmu6,
  32        lima_ip_ppmmu7,
  33        lima_ip_gp,
  34        lima_ip_pp0,
  35        lima_ip_pp1,
  36        lima_ip_pp2,
  37        lima_ip_pp3,
  38        lima_ip_pp4,
  39        lima_ip_pp5,
  40        lima_ip_pp6,
  41        lima_ip_pp7,
  42        lima_ip_l2_cache0,
  43        lima_ip_l2_cache1,
  44        lima_ip_l2_cache2,
  45        lima_ip_dlbu,
  46        lima_ip_bcast,
  47        lima_ip_pp_bcast,
  48        lima_ip_ppmmu_bcast,
  49        lima_ip_num,
  50};
  51
  52struct lima_device;
  53
  54struct lima_ip {
  55        struct lima_device *dev;
  56        enum lima_ip_id id;
  57        bool present;
  58
  59        void __iomem *iomem;
  60        int irq;
  61
  62        union {
  63                /* gp/pp */
  64                bool async_reset;
  65                /* l2 cache */
  66                spinlock_t lock;
  67                /* pmu/bcast */
  68                u32 mask;
  69        } data;
  70};
  71
  72enum lima_pipe_id {
  73        lima_pipe_gp,
  74        lima_pipe_pp,
  75        lima_pipe_num,
  76};
  77
  78struct lima_device {
  79        struct device *dev;
  80        struct drm_device *ddev;
  81
  82        enum lima_gpu_id id;
  83        u32 gp_version;
  84        u32 pp_version;
  85        int num_pp;
  86
  87        void __iomem *iomem;
  88        struct clk *clk_bus;
  89        struct clk *clk_gpu;
  90        struct reset_control *reset;
  91        struct regulator *regulator;
  92
  93        struct lima_ip ip[lima_ip_num];
  94        struct lima_sched_pipe pipe[lima_pipe_num];
  95
  96        struct lima_vm *empty_vm;
  97        uint64_t va_start;
  98        uint64_t va_end;
  99
 100        u32 *dlbu_cpu;
 101        dma_addr_t dlbu_dma;
 102
 103        struct lima_devfreq devfreq;
 104
 105        /* debug info */
 106        struct lima_dump_head dump;
 107        struct list_head error_task_list;
 108        struct mutex error_task_list_lock;
 109};
 110
 111static inline struct lima_device *
 112to_lima_dev(struct drm_device *dev)
 113{
 114        return dev->dev_private;
 115}
 116
 117int lima_device_init(struct lima_device *ldev);
 118void lima_device_fini(struct lima_device *ldev);
 119
 120const char *lima_ip_name(struct lima_ip *ip);
 121
 122typedef int (*lima_poll_func_t)(struct lima_ip *);
 123
 124static inline int lima_poll_timeout(struct lima_ip *ip, lima_poll_func_t func,
 125                                    int sleep_us, int timeout_us)
 126{
 127        ktime_t timeout = ktime_add_us(ktime_get(), timeout_us);
 128
 129        might_sleep_if(sleep_us);
 130        while (1) {
 131                if (func(ip))
 132                        return 0;
 133
 134                if (timeout_us && ktime_compare(ktime_get(), timeout) > 0)
 135                        return -ETIMEDOUT;
 136
 137                if (sleep_us)
 138                        usleep_range((sleep_us >> 2) + 1, sleep_us);
 139        }
 140        return 0;
 141}
 142
 143int lima_device_suspend(struct device *dev);
 144int lima_device_resume(struct device *dev);
 145
 146#endif
 147