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      1 /*
      2  * Copyright  2020-2021 Collabora, Ltd.
      3  * Author: Antonio Caggiano <antonio.caggiano (at) collabora.com>
      4  * Author: Rohan Garg <rohan.garg (at) collabora.com>
      5  * Author: Robert Beckett <bob.beckett (at) collabora.com>
      6  *
      7  * SPDX-License-Identifier: MIT
      8  */
      9 
     10 #pragma once
     11 
     12 #include <pps/pps_driver.h>
     13 
     14 #include "pan_pps_perf.h"
     15 
     16 namespace pps
     17 {
     18 /// @brief Panfrost implementation of PPS driver.
     19 /// This driver queries the GPU through `drm/panfrost_drm.h`, using performance counters ioctls,
     20 /// which can be enabled by setting a kernel parameter: `modprobe panfrost unstable_ioctls=1`.
     21 /// The ioctl needs a buffer to copy data from kernel to user space.
     22 class PanfrostDriver : public Driver
     23 {
     24    public:
     25    static inline PanfrostDriver &into(Driver &dri);
     26    static inline const PanfrostDriver &into(const Driver &dri);
     27 
     28    /// @param A list of mali counter names
     29    /// @return A pair with two lists: counter groups and available counters
     30    static std::pair<std::vector<CounterGroup>, std::vector<Counter>> create_available_counters(
     31       const PanfrostPerf& perf);
     32 
     33    PanfrostDriver();
     34    ~PanfrostDriver();
     35 
     36    uint64_t get_min_sampling_period_ns() override;
     37    bool init_perfcnt() override;
     38    void enable_counter(uint32_t counter_id) override;
     39    void enable_all_counters() override;
     40    void enable_perfcnt(uint64_t sampling_period_ns) override;
     41    void disable_perfcnt() override;
     42    bool dump_perfcnt() override;
     43    uint64_t next() override;
     44 
     45    uint64_t last_dump_ts = 0;
     46 
     47    std::unique_ptr<PanfrostDevice> dev = nullptr;
     48    std::unique_ptr<PanfrostPerf> perf = nullptr;
     49 };
     50 
     51 PanfrostDriver &PanfrostDriver::into(Driver &dri)
     52 {
     53    return reinterpret_cast<PanfrostDriver &>(dri);
     54 }
     55 
     56 const PanfrostDriver &PanfrostDriver::into(const Driver &dri)
     57 {
     58    return reinterpret_cast<const PanfrostDriver &>(dri);
     59 }
     60 
     61 } // namespace pps
     62