summaryrefslogtreecommitdiff
path: root/drivers/net/fsl-mc/dpio/qbman_private.h
blob: f1f16b828bf8f498cba956bbb282886317a83729 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
/*
 * Copyright (C) 2014 Freescale Semiconductor
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

/* Perform extra checking */
#include <common.h>
#include <errno.h>
#include <asm/io.h>
#include <linux/types.h>
#include <asm/atomic.h>
#include <malloc.h>
#include <fsl-mc/fsl_qbman_base.h>

#define QBMAN_CHECKING

/* Any time there is a register interface which we poll on, this provides a
 * "break after x iterations" scheme for it. It's handy for debugging, eg.
 * where you don't want millions of lines of log output from a polling loop
 * that won't, because such things tend to drown out the earlier log output
 * that might explain what caused the problem. (NB: put ";" after each macro!)
 * TODO: we should probably remove this once we're done sanitising the
 * simulator...
 */
#define DBG_POLL_START(loopvar) (loopvar = 10)
#define DBG_POLL_CHECK(loopvar) \
	do {if (!(loopvar--)) BUG_ON(NULL == "DBG_POLL_CHECK"); } while (0)

/* For CCSR or portal-CINH registers that contain fields at arbitrary offsets
 * and widths, these macro-generated encode/decode/isolate/remove inlines can
 * be used.
 *
 * Eg. to "d"ecode a 14-bit field out of a register (into a "uint16_t" type),
 * where the field is located 3 bits "up" from the least-significant bit of the
 * register (ie. the field location within the 32-bit register corresponds to a
 * mask of 0x0001fff8), you would do;
 *                uint16_t field = d32_uint16_t(3, 14, reg_value);
 *
 * Or to "e"ncode a 1-bit boolean value (input type is "int", zero is FALSE,
 * non-zero is TRUE, so must convert all non-zero inputs to 1, hence the "!!"
 * operator) into a register at bit location 0x00080000 (19 bits "in" from the
 * LS bit), do;
 *                reg_value |= e32_int(19, 1, !!field);
 *
 * If you wish to read-modify-write a register, such that you leave the 14-bit
 * field as-is but have all other fields set to zero, then "i"solate the 14-bit
 * value using;
 *                reg_value = i32_uint16_t(3, 14, reg_value);
 *
 * Alternatively, you could "r"emove the 1-bit boolean field (setting it to
 * zero) but leaving all other fields as-is;
 *                reg_val = r32_int(19, 1, reg_value);
 *
 */
#define MAKE_MASK32(width) (width == 32 ? 0xffffffff : \
				 (uint32_t)((1 << width) - 1))
#define DECLARE_CODEC32(t) \
static inline uint32_t e32_##t(uint32_t lsoffset, uint32_t width, t val) \
{ \
	BUG_ON(width > (sizeof(t) * 8)); \
	return ((uint32_t)val & MAKE_MASK32(width)) << lsoffset; \
} \
static inline t d32_##t(uint32_t lsoffset, uint32_t width, uint32_t val) \
{ \
	BUG_ON(width > (sizeof(t) * 8)); \
	return (t)((val >> lsoffset) & MAKE_MASK32(width)); \
} \
static inline uint32_t i32_##t(uint32_t lsoffset, uint32_t width, \
				uint32_t val) \
{ \
	BUG_ON(width > (sizeof(t) * 8)); \
	return e32_##t(lsoffset, width, d32_##t(lsoffset, width, val)); \
} \
static inline uint32_t r32_##t(uint32_t lsoffset, uint32_t width, \
				uint32_t val) \
{ \
	BUG_ON(width > (sizeof(t) * 8)); \
	return ~(MAKE_MASK32(width) << lsoffset) & val; \
}
DECLARE_CODEC32(uint32_t)
DECLARE_CODEC32(uint16_t)
DECLARE_CODEC32(uint8_t)
DECLARE_CODEC32(int)

	/*********************/
	/* Debugging assists */
	/*********************/

static inline void __hexdump(unsigned long start, unsigned long end,
			unsigned long p, size_t sz, const unsigned char *c)
{
	while (start < end) {
		unsigned int pos = 0;
		char buf[64];
		int nl = 0;

		pos += sprintf(buf + pos, "%08lx: ", start);
		do {
			if ((start < p) || (start >= (p + sz)))
				pos += sprintf(buf + pos, "..");
			else
				pos += sprintf(buf + pos, "%02x", *(c++));
			if (!(++start & 15)) {
				buf[pos++] = '\n';
				nl = 1;
			} else {
				nl = 0;
				if (!(start & 1))
					buf[pos++] = ' ';
				if (!(start & 3))
					buf[pos++] = ' ';
			}
		} while (start & 15);
		if (!nl)
			buf[pos++] = '\n';
		buf[pos] = '\0';
		debug("%s", buf);
	}
}
static inline void hexdump(const void *ptr, size_t sz)
{
	unsigned long p = (unsigned long)ptr;
	unsigned long start = p & ~(unsigned long)15;
	unsigned long end = (p + sz + 15) & ~(unsigned long)15;
	const unsigned char *c = ptr;

	__hexdump(start, end, p, sz, c);
}

#if defined(__BIG_ENDIAN)
#define DQRR_TOK_OFFSET 0
#else
#define DQRR_TOK_OFFSET 24
#endif

/* Similarly-named functions */
#define upper32(a) upper_32_bits(a)
#define lower32(a) lower_32_bits(a)

	/****************/
	/* arch assists */
	/****************/

static inline void dcbz(void *ptr)
{
	uint32_t *p = ptr;
	BUG_ON((unsigned long)ptr & 63);
	p[0] = 0;
	p[1] = 0;
	p[2] = 0;
	p[3] = 0;
	p[4] = 0;
	p[5] = 0;
	p[6] = 0;
	p[7] = 0;
	p[8] = 0;
	p[9] = 0;
	p[10] = 0;
	p[11] = 0;
	p[12] = 0;
	p[13] = 0;
	p[14] = 0;
	p[15] = 0;
}

#define lwsync()

#include "qbman_sys.h"