1 /*
2  * Copyright (C) 2014 Freescale Semiconductor
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 /* Perform extra checking */
8 #include <common.h>
9 #include <errno.h>
10 #include <asm/io.h>
11 #include <linux/types.h>
12 #include <asm/atomic.h>
13 #include <malloc.h>
14 #include <fsl-mc/fsl_qbman_base.h>
15 
16 #define QBMAN_CHECKING
17 
18 /* Any time there is a register interface which we poll on, this provides a
19  * "break after x iterations" scheme for it. It's handy for debugging, eg.
20  * where you don't want millions of lines of log output from a polling loop
21  * that won't, because such things tend to drown out the earlier log output
22  * that might explain what caused the problem. (NB: put ";" after each macro!)
23  * TODO: we should probably remove this once we're done sanitising the
24  * simulator...
25  */
26 #define DBG_POLL_START(loopvar) (loopvar = 10)
27 #define DBG_POLL_CHECK(loopvar) \
28 	do {if (!(loopvar--)) BUG_ON(NULL == "DBG_POLL_CHECK"); } while (0)
29 
30 /* For CCSR or portal-CINH registers that contain fields at arbitrary offsets
31  * and widths, these macro-generated encode/decode/isolate/remove inlines can
32  * be used.
33  *
34  * Eg. to "d"ecode a 14-bit field out of a register (into a "uint16_t" type),
35  * where the field is located 3 bits "up" from the least-significant bit of the
36  * register (ie. the field location within the 32-bit register corresponds to a
37  * mask of 0x0001fff8), you would do;
38  *                uint16_t field = d32_uint16_t(3, 14, reg_value);
39  *
40  * Or to "e"ncode a 1-bit boolean value (input type is "int", zero is FALSE,
41  * non-zero is TRUE, so must convert all non-zero inputs to 1, hence the "!!"
42  * operator) into a register at bit location 0x00080000 (19 bits "in" from the
43  * LS bit), do;
44  *                reg_value |= e32_int(19, 1, !!field);
45  *
46  * If you wish to read-modify-write a register, such that you leave the 14-bit
47  * field as-is but have all other fields set to zero, then "i"solate the 14-bit
48  * value using;
49  *                reg_value = i32_uint16_t(3, 14, reg_value);
50  *
51  * Alternatively, you could "r"emove the 1-bit boolean field (setting it to
52  * zero) but leaving all other fields as-is;
53  *                reg_val = r32_int(19, 1, reg_value);
54  *
55  */
56 #define MAKE_MASK32(width) (width == 32 ? 0xffffffff : \
57 				 (uint32_t)((1 << width) - 1))
58 #define DECLARE_CODEC32(t) \
59 static inline uint32_t e32_##t(uint32_t lsoffset, uint32_t width, t val) \
60 { \
61 	BUG_ON(width > (sizeof(t) * 8)); \
62 	return ((uint32_t)val & MAKE_MASK32(width)) << lsoffset; \
63 } \
64 static inline t d32_##t(uint32_t lsoffset, uint32_t width, uint32_t val) \
65 { \
66 	BUG_ON(width > (sizeof(t) * 8)); \
67 	return (t)((val >> lsoffset) & MAKE_MASK32(width)); \
68 } \
69 static inline uint32_t i32_##t(uint32_t lsoffset, uint32_t width, \
70 				uint32_t val) \
71 { \
72 	BUG_ON(width > (sizeof(t) * 8)); \
73 	return e32_##t(lsoffset, width, d32_##t(lsoffset, width, val)); \
74 } \
75 static inline uint32_t r32_##t(uint32_t lsoffset, uint32_t width, \
76 				uint32_t val) \
77 { \
78 	BUG_ON(width > (sizeof(t) * 8)); \
79 	return ~(MAKE_MASK32(width) << lsoffset) & val; \
80 }
81 DECLARE_CODEC32(uint32_t)
82 DECLARE_CODEC32(uint16_t)
83 DECLARE_CODEC32(uint8_t)
84 DECLARE_CODEC32(int)
85 
86 	/*********************/
87 	/* Debugging assists */
88 	/*********************/
89 
90 static inline void __hexdump(unsigned long start, unsigned long end,
91 			unsigned long p, size_t sz, const unsigned char *c)
92 {
93 	while (start < end) {
94 		unsigned int pos = 0;
95 		char buf[64];
96 		int nl = 0;
97 
98 		pos += sprintf(buf + pos, "%08lx: ", start);
99 		do {
100 			if ((start < p) || (start >= (p + sz)))
101 				pos += sprintf(buf + pos, "..");
102 			else
103 				pos += sprintf(buf + pos, "%02x", *(c++));
104 			if (!(++start & 15)) {
105 				buf[pos++] = '\n';
106 				nl = 1;
107 			} else {
108 				nl = 0;
109 				if (!(start & 1))
110 					buf[pos++] = ' ';
111 				if (!(start & 3))
112 					buf[pos++] = ' ';
113 			}
114 		} while (start & 15);
115 		if (!nl)
116 			buf[pos++] = '\n';
117 		buf[pos] = '\0';
118 		debug("%s", buf);
119 	}
120 }
121 static inline void hexdump(const void *ptr, size_t sz)
122 {
123 	unsigned long p = (unsigned long)ptr;
124 	unsigned long start = p & ~(unsigned long)15;
125 	unsigned long end = (p + sz + 15) & ~(unsigned long)15;
126 	const unsigned char *c = ptr;
127 
128 	__hexdump(start, end, p, sz, c);
129 }
130 
131 #if defined(__BIG_ENDIAN)
132 #define DQRR_TOK_OFFSET 0
133 #else
134 #define DQRR_TOK_OFFSET 24
135 #endif
136 
137 /* Similarly-named functions */
138 #define upper32(a) upper_32_bits(a)
139 #define lower32(a) lower_32_bits(a)
140 
141 	/****************/
142 	/* arch assists */
143 	/****************/
144 
145 static inline void dcbz(void *ptr)
146 {
147 	uint32_t *p = ptr;
148 	BUG_ON((unsigned long)ptr & 63);
149 	p[0] = 0;
150 	p[1] = 0;
151 	p[2] = 0;
152 	p[3] = 0;
153 	p[4] = 0;
154 	p[5] = 0;
155 	p[6] = 0;
156 	p[7] = 0;
157 	p[8] = 0;
158 	p[9] = 0;
159 	p[10] = 0;
160 	p[11] = 0;
161 	p[12] = 0;
162 	p[13] = 0;
163 	p[14] = 0;
164 	p[15] = 0;
165 }
166 
167 #define lwsync()
168 
169 #include "qbman_sys.h"
170