2 * Copyright (c) 2017 The FreeBSD Foundation
5 * This software was developed by Landon Fuller under sponsorship from
6 * the FreeBSD Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #ifndef _BHND_BHND_PRIVATE_H_
33 #define _BHND_BHND_PRIVATE_H_
35 #include <sys/param.h>
36 #include <sys/queue.h>
38 #include "bhnd_types.h"
41 * Private bhnd(4) driver definitions.
45 * A bhnd(4) service registry entry.
47 struct bhnd_service_entry {
48 device_t provider; /**< service provider */
49 bhnd_service_t service; /**< service implemented */
50 uint32_t flags; /**< entry flags (see BHND_SPF_*) */
51 volatile u_int refs; /**< reference count; updated atomically
52 with only a shared lock held */
54 STAILQ_ENTRY(bhnd_service_entry) link;
58 * bhnd(4) per-core PMU clkctl quirks.
61 /** On BCM4328-derived chipsets, the CLK_CTL_ST register CCS_HTAVAIL
62 * and CCS_ALPAVAIL bits are swapped in the ChipCommon and PCMCIA
63 * cores; the BHND_CCS0_* constants should be used. */
64 BHND_CLKCTL_QUIRK_CCS0 = 1
68 * Per-core bhnd(4) PMU clkctl registers.
70 struct bhnd_core_clkctl {
71 device_t cc_dev; /**< core device */
72 device_t cc_pmu_dev; /**< pmu device */
73 uint32_t cc_quirks; /**< core-specific clkctl quirks */
74 struct bhnd_resource *cc_res; /**< resource mapping core's clkctl register */
75 bus_size_t cc_res_offset; /**< offset to clkctl register */
76 u_int cc_max_latency; /**< maximum PMU transition latency, in microseconds */
77 struct mtx cc_mtx; /**< register read/modify/write lock */
80 #define BHND_ASSERT_CLKCTL_AVAIL(_clkctl) \
81 KASSERT(!bhnd_is_hw_suspended((_clkctl)->cc_dev), \
82 ("reading clkctl on suspended core will trigger system livelock"))
84 #define BHND_CLKCTL_LOCK_INIT(_clkctl) mtx_init(&(_clkctl)->cc_mtx, \
85 device_get_nameunit((_clkctl)->cc_dev), NULL, MTX_DEF)
86 #define BHND_CLKCTL_LOCK(_clkctl) mtx_lock(&(_clkctl)->cc_mtx)
87 #define BHND_CLKCTL_UNLOCK(_clkctl) mtx_unlock(&(_clkctl)->cc_mtx)
88 #define BHND_CLKCTL_LOCK_ASSERT(_clkctl, what) \
89 mtx_assert(&(_clkctl)->cc_mtx, what)
90 #define BHND_CLKCTL_LOCK_DESTROY(_clkctl) mtx_destroy(&(_clkctl->cc_mtx))
92 #define BHND_CLKCTL_READ_4(_clkctl) \
93 bhnd_bus_read_4((_clkctl)->cc_res, (_clkctl)->cc_res_offset)
95 #define BHND_CLKCTL_WRITE_4(_clkctl, _val) \
96 bhnd_bus_write_4((_clkctl)->cc_res, (_clkctl)->cc_res_offset, (_val))
98 #define BHND_CLKCTL_SET_4(_clkctl, _val, _mask) \
99 BHND_CLKCTL_WRITE_4((_clkctl), \
100 ((_val) & (_mask)) | (BHND_CLKCTL_READ_4(_clkctl) & ~(_mask)))
102 #endif /* _BHND_BHND_PRIVATE_H_ */