pan_pps_driver.h revision 7ec681f3 
1/*
2 * Copyright © 2020-2021 Collabora, Ltd.
3 * Author: Antonio Caggiano <antonio.caggiano@collabora.com>
4 * Author: Rohan Garg <rohan.garg@collabora.com>
5 * Author: Robert Beckett <bob.beckett@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
16namespace 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.
22class 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
51PanfrostDriver &PanfrostDriver::into(Driver &dri)
52{
53   return reinterpret_cast<PanfrostDriver &>(dri);
54}
55
56const PanfrostDriver &PanfrostDriver::into(const Driver &dri)
57{
58   return reinterpret_cast<const PanfrostDriver &>(dri);
59}
60
61} // namespace pps
62