2 * Copyright (c) 2013 Ruslan Bukin <br@bsdpad.com>
3 * Copyright (c) 2015 Semihalf
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #define _ARM32_BUS_DMA_PRIVATE
33 #include <sys/param.h>
34 #include <sys/systm.h>
37 #include <sys/mutex.h>
38 #include <sys/devmap.h>
43 #include <machine/bus.h>
44 #include <machine/frame.h> /* For trapframe_t, used in <machine/machdep.h> */
45 #include <machine/machdep.h>
46 #include <machine/platform.h>
47 #include <machine/fdt.h>
49 #include <dev/fdt/fdt_common.h>
52 #include "opt_platform.h"
54 struct mtx al_dbg_lock;
56 #define DEVMAP_MAX_VA_ADDRESS 0xF0000000
57 bus_addr_t al_devmap_pa;
58 bus_addr_t al_devmap_size;
60 #define AL_NB_SERVICE_OFFSET 0x70000
61 #define AL_NB_CCU_OFFSET 0x90000
62 #define AL_CCU_SNOOP_CONTROL_IOFAB_0_OFFSET 0x4000
63 #define AL_CCU_SNOOP_CONTROL_IOFAB_1_OFFSET 0x5000
64 #define AL_CCU_SPECULATION_CONTROL_OFFSET 0x4
66 #define AL_NB_ACF_MISC_OFFSET 0xD0
67 #define AL_NB_ACF_MISC_READ_BYPASS (1 << 30)
69 int alpine_get_devmap_base(bus_addr_t *pa, bus_addr_t *size);
72 platform_lastaddr(void)
75 return (DEVMAP_MAX_VA_ADDRESS);
79 platform_probe_and_attach(void)
85 platform_gpio_init(void)
91 platform_late_init(void)
96 if (!mtx_initialized(&al_dbg_lock))
97 mtx_init(&al_dbg_lock, "ALDBG", "ALDBG", MTX_SPIN);
99 /* configure system fabric */
100 if (bus_space_map(fdtbus_bs_tag, al_devmap_pa, al_devmap_size, 0,
102 panic("Couldn't map Register Space area");
104 /* do not allow reads to bypass writes to different addresses */
105 val = bus_space_read_4(fdtbus_bs_tag, reg_baddr,
106 AL_NB_SERVICE_OFFSET + AL_NB_ACF_MISC_OFFSET);
107 val &= ~AL_NB_ACF_MISC_READ_BYPASS;
108 bus_space_write_4(fdtbus_bs_tag, reg_baddr,
109 AL_NB_SERVICE_OFFSET + AL_NB_ACF_MISC_OFFSET, val);
111 /* enable cache snoop */
112 bus_space_write_4(fdtbus_bs_tag, reg_baddr,
113 AL_NB_CCU_OFFSET + AL_CCU_SNOOP_CONTROL_IOFAB_0_OFFSET, 1);
114 bus_space_write_4(fdtbus_bs_tag, reg_baddr,
115 AL_NB_CCU_OFFSET + AL_CCU_SNOOP_CONTROL_IOFAB_1_OFFSET, 1);
117 /* disable speculative fetches from masters */
118 bus_space_write_4(fdtbus_bs_tag, reg_baddr,
119 AL_NB_CCU_OFFSET + AL_CCU_SPECULATION_CONTROL_OFFSET, 7);
121 bus_space_unmap(fdtbus_bs_tag, reg_baddr, al_devmap_size);
125 * Construct devmap table with DT-derived config data.
128 platform_devmap_init(void)
130 alpine_get_devmap_base(&al_devmap_pa, &al_devmap_size);
131 devmap_add_entry(al_devmap_pa, al_devmap_size);
135 struct arm32_dma_range *
136 bus_dma_get_range(void)
143 bus_dma_get_range_nb(void)