2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2015 Landon Fuller <landon@landonf.org>
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8 * modification, are permitted provided that the following conditions
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11 * notice, this list of conditions and the following disclaimer,
12 * without modification.
13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
14 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
15 * redistribution must be conditioned upon including a substantially
16 * similar Disclaimer requirement for further binary redistribution.
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21 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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34 #ifndef _BHND_CORES_PMU_BHND_PMUVAR_H_
35 #define _BHND_CORES_PMU_BHND_PMUVAR_H_
37 #include <sys/types.h>
42 struct bhnd_pmu_query;
45 DECLARE_CLASS(bhnd_pmu_driver);
46 extern devclass_t bhnd_pmu_devclass;
48 int bhnd_pmu_probe(device_t dev);
49 int bhnd_pmu_attach(device_t dev, struct bhnd_resource *res);
50 int bhnd_pmu_detach(device_t dev);
51 int bhnd_pmu_suspend(device_t dev);
52 int bhnd_pmu_resume(device_t dev);
54 int bhnd_pmu_query_init(struct bhnd_pmu_query *query, device_t dev,
55 struct bhnd_chipid id, const struct bhnd_pmu_io *io,
57 void bhnd_pmu_query_fini(struct bhnd_pmu_query *query);
59 uint32_t bhnd_pmu_si_clock(struct bhnd_pmu_query *sc);
60 uint32_t bhnd_pmu_cpu_clock(struct bhnd_pmu_query *sc);
61 uint32_t bhnd_pmu_mem_clock(struct bhnd_pmu_query *sc);
62 uint32_t bhnd_pmu_alp_clock(struct bhnd_pmu_query *sc);
63 uint32_t bhnd_pmu_ilp_clock(struct bhnd_pmu_query *sc);
66 * PMU read-only query support.
68 * Provides support for querying PMU information prior to availability of
71 struct bhnd_pmu_query {
72 device_t dev; /**< owning device, or NULL */
73 struct bhnd_chipid cid; /**< chip identification */
74 uint32_t caps; /**< pmu capability flags. */
76 const struct bhnd_pmu_io *io; /**< I/O operations */
77 void *io_ctx; /**< I/O callback context */
79 uint32_t ilp_cps; /**< measured ILP cycles per second, or 0 */
83 * PMU abstract I/O operations.
86 /* Read 4 bytes from PMU @p reg */
87 uint32_t (*rd4)(bus_size_t reg, void *ctx);
89 /* Read 4 bytes to PMU @p reg */
90 void (*wr4)(bus_size_t reg, uint32_t val, void *ctx);
92 /* Read ChipCommon's CHIP_ST register */
93 uint32_t (*rd_chipst)(void *ctx);
97 * bhnd_pmu driver instance state.
99 struct bhnd_pmu_softc {
101 uint32_t caps; /**< pmu capability flags. */
102 struct bhnd_chipid cid; /**< chip identification */
104 struct bhnd_pmu_query query; /**< query instance */
106 struct bhnd_board_info board; /**< board identification */
107 device_t chipc_dev; /**< chipcommon device */
109 struct bhnd_resource *res; /**< pmu register block. */
110 int rid; /**< pmu register RID */
111 struct bhnd_core_clkctl *clkctl; /**< pmu clkctl register */
113 struct mtx mtx; /**< state mutex */
115 /* For compatibility with bhnd_pmu_query APIs and the shared
116 * BHND_PMU_(READ|WRITE) macros. */
117 const struct bhnd_pmu_io *io;
122 #define BPMU_LOCK_INIT(sc) \
123 mtx_init(&(sc)->mtx, device_get_nameunit((sc)->dev), NULL, MTX_DEF)
124 #define BPMU_LOCK(sc) mtx_lock(&(sc)->mtx)
125 #define BPMU_UNLOCK(sc) mtx_unlock(&(sc)->mtx)
126 #define BPMU_LOCK_ASSERT(sc, what) mtx_assert(&(sc)->mtx, what)
127 #define BPMU_LOCK_DESTROY(sc) mtx_destroy(&(sc)->mtx)
129 #endif /* _BHND_CORES_PMU_BHND_PMUVAR_H_ */