1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2003-2012 Broadcom Corporation
5 * All Rights Reserved
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
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
15 * the documentation and/or other materials provided with the
16 * distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY BROADCOM ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
25 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
27 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
28 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/endian.h>
36
37 #include <mips/nlm/hal/mips-extns.h>
38 #include <mips/nlm/hal/haldefs.h>
39 #include <mips/nlm/hal/iomap.h>
40 #include <mips/nlm/hal/gbu.h>
41
42 #include <mips/nlm/board.h>
43
44 #define CPLD_REVISION 0x0
45 #define CPLD_RESET 0x1
46 #define CPLD_CTRL 0x2
47 #define CPLD_RSVD 0x3
48 #define CPLD_PWR_CTRL 0x4
49 #define CPLD_MISC 0x5
50 #define CPLD_CTRL_STATUS 0x6
51 #define CPLD_PWR_INTR_STATUS 0x7
52 #define CPLD_DATA 0x8
53
54 static __inline
nlm_cpld_read(uint64_t base,int reg)55 int nlm_cpld_read(uint64_t base, int reg)
56 {
57 uint16_t val;
58
59 val = *(volatile uint16_t *)(long)(base + reg * 2);
60 return le16toh(val);
61 }
62
63 static __inline void
nlm_cpld_write(uint64_t base,int reg,uint16_t data)64 nlm_cpld_write(uint64_t base, int reg, uint16_t data)
65 {
66 data = htole16(data);
67 *(volatile uint16_t *)(long)(base + reg * 2) = data;
68 }
69
70 int
nlm_board_cpld_majorversion(uint64_t base)71 nlm_board_cpld_majorversion(uint64_t base)
72 {
73 return (nlm_cpld_read(base, CPLD_REVISION) >> 8);
74 }
75
76 int
nlm_board_cpld_minorversion(uint64_t base)77 nlm_board_cpld_minorversion(uint64_t base)
78 {
79 return (nlm_cpld_read(base, CPLD_REVISION) & 0xff);
80 }
81
nlm_board_cpld_base(int node,int chipselect)82 uint64_t nlm_board_cpld_base(int node, int chipselect)
83 {
84 uint64_t gbubase, cpld_phys;
85
86 gbubase = nlm_get_gbu_regbase(node);
87 cpld_phys = nlm_read_gbu_reg(gbubase, GBU_CS_BASEADDR(chipselect));
88 return (MIPS_PHYS_TO_KSEG1(cpld_phys << 8));
89 }
90
91 void
nlm_board_cpld_reset(uint64_t base)92 nlm_board_cpld_reset(uint64_t base)
93 {
94
95 nlm_cpld_write(base, CPLD_RESET, 1 << 15);
96 for(;;)
97 __asm __volatile("wait");
98 }
99
100 /* get daughter board type */
101 int
nlm_board_cpld_dboard_type(uint64_t base,int slot)102 nlm_board_cpld_dboard_type(uint64_t base, int slot)
103 {
104 uint16_t val;
105 int shift = 0;
106
107 switch (slot) {
108 case 0: shift = 0; break;
109 case 1: shift = 4; break;
110 case 2: shift = 2; break;
111 case 3: shift = 6; break;
112 }
113 val = nlm_cpld_read(base, CPLD_CTRL_STATUS) >> shift;
114 return (val & 0x3);
115 }
116