2 * Misc useful os-independent macros and functions.
4 * Copyright 2004, Broadcom Corporation
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18 #define MIN(a, b) (((a)<(b))?(a):(b))
22 #define MAX(a, b) (((a)>(b))?(a):(b))
25 #define CEIL(x, y) (((x) + ((y)-1)) / (y))
26 #define ROUNDUP(x, y) ((((ulong)(x)+((y)-1))/(y))*(y))
27 #define ISALIGNED(a, x) (((uint)(a) & ((x)-1)) == 0)
28 #define ISPOWEROF2(x) ((((x)-1)&(x))==0)
29 #define OFFSETOF(type, member) ((uint) &((type *)0)->member)
30 #define ARRAYSIZE(a) (sizeof(a)/sizeof(a[0]))
32 /* bit map related macros */
34 #define NBBY 8 /* 8 bits per byte */
35 #define setbit(a,i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY))
36 #define clrbit(a,i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
37 #define isset(a,i) ((a)[(i)/NBBY] & (1<<((i)%NBBY)))
38 #define isclr(a,i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
41 #define NBITS(type) (sizeof (type) * 8)
43 #define _BCM_U 0x01 /* upper */
44 #define _BCM_L 0x02 /* lower */
45 #define _BCM_D 0x04 /* digit */
46 #define _BCM_C 0x08 /* cntrl */
47 #define _BCM_P 0x10 /* punct */
48 #define _BCM_S 0x20 /* white space (space/lf/tab) */
49 #define _BCM_X 0x40 /* hex digit */
50 #define _BCM_SP 0x80 /* hard space (0x20) */
52 extern unsigned char bcm_ctype
[];
53 #define bcm_ismask(x) (bcm_ctype[(int)(unsigned char)(x)])
55 #define bcm_isalnum(c) ((bcm_ismask(c)&(_BCM_U|_BCM_L|_BCM_D)) != 0)
56 #define bcm_isalpha(c) ((bcm_ismask(c)&(_BCM_U|_BCM_L)) != 0)
57 #define bcm_iscntrl(c) ((bcm_ismask(c)&(_BCM_C)) != 0)
58 #define bcm_isdigit(c) ((bcm_ismask(c)&(_BCM_D)) != 0)
59 #define bcm_isgraph(c) ((bcm_ismask(c)&(_BCM_P|_BCM_U|_BCM_L|_BCM_D)) != 0)
60 #define bcm_islower(c) ((bcm_ismask(c)&(_BCM_L)) != 0)
61 #define bcm_isprint(c) ((bcm_ismask(c)&(_BCM_P|_BCM_U|_BCM_L|_BCM_D|_BCM_SP)) != 0)
62 #define bcm_ispunct(c) ((bcm_ismask(c)&(_BCM_P)) != 0)
63 #define bcm_isspace(c) ((bcm_ismask(c)&(_BCM_S)) != 0)
64 #define bcm_isupper(c) ((bcm_ismask(c)&(_BCM_U)) != 0)
65 #define bcm_isxdigit(c) ((bcm_ismask(c)&(_BCM_D|_BCM_X)) != 0)
68 * Spin at most 'us' microseconds while 'exp' is true.
69 * Caller should explicitly test 'exp' when this completes
70 * and take appropriate error action if 'exp' is still true.
72 #define SPINWAIT(exp, us) { \
73 uint countdown = (us) + 9; \
74 while ((exp) && (countdown >= 10)) {\
80 /* generic osl packet queue */
82 void *head
; /* first packet to dequeue */
83 void *tail
; /* last packet to dequeue */
84 uint len
; /* number of queued packets */
85 uint maxlen
; /* maximum number of queued packets */
86 bool priority
; /* enqueue by packet priority */
88 #define DEFAULT_QLEN 128
90 #define pktq_len(q) ((q)->len)
91 #define pktq_avail(q) ((q)->maxlen - (q)->len)
92 #define pktq_head(q) ((q)->head)
93 #define pktq_full(q) ((q)->len >= (q)->maxlen)
96 #define CRC8_INIT_VALUE 0xff /* Initial CRC8 checksum value */
97 #define CRC8_GOOD_VALUE 0x9f /* Good final CRC8 checksum value */
98 #define CRC16_INIT_VALUE 0xffff /* Initial CRC16 checksum value */
99 #define CRC16_GOOD_VALUE 0xf0b8 /* Good final CRC16 checksum value */
100 #define CRC32_INIT_VALUE 0xffffffff /* Initial CRC32 checksum value */
101 #define CRC32_GOOD_VALUE 0xdebb20e3 /* Good final CRC32 checksum value */
103 /* tag_ID/length/value_buffer tuple */
104 typedef struct bcm_tlv
{
110 /* Check that bcm_tlv_t fits into the given buflen */
111 #define bcm_valid_tlv(elt, buflen) ((buflen) >= 2 && (buflen) >= 2 + (elt)->len)
113 /* buffer length for ethernet address from bcm_ether_ntoa() */
114 #define ETHER_ADDR_STR_LEN 18
117 * load 32-bit value from unaligned byte array
120 #define load32_ua(a) ((((uint8 *)(a))[0] << 24) + (((uint8 *)(a))[1] << 16) + \
121 (((uint8 *)(a))[2] << 8) + ((uint8 *)(a))[3])
123 #define load32_ua(a) ((((uint8 *)(a))[3] << 24) + (((uint8 *)(a))[2] << 16) + \
124 (((uint8 *)(a))[1] << 8) + ((uint8 *)(a))[0])
128 extern uint
bcm_atoi(char *s
);
129 extern uchar
bcm_toupper(uchar c
);
130 extern ulong
bcm_strtoul(char *cp
, char **endp
, uint base
);
131 extern void deadbeef(char *p
, uint len
);
132 extern void prhex(char *msg
, uchar
*buf
, uint len
);
133 extern void prpkt(char *msg
, void *drv
, void *p0
);
134 extern uint
pktcopy(void *drv
, void *p
, uint offset
, int len
, uchar
*buf
);
135 extern uint
pkttotlen(void *drv
, void *);
136 extern uchar
*bcm_ether_ntoa(char *ea
, char *buf
);
137 extern int bcm_ether_atoe(char *p
, char *ea
);
138 extern void bcm_mdelay(uint ms
);
139 extern char *getvar(char *vars
, char *name
);
140 extern int getintvar(char *vars
, char *name
);
141 extern char *bcmstrstr(char *haystack
, char *needle
);
143 extern uint8
crc8(uint8
*p
, uint nbytes
, uint8 crc
);
144 extern uint16
crc16(uint8
*p
, uint nbytes
, uint16 crc
);
145 extern uint32
crc32(uint8
*p
, uint nbytes
, uint32 crc
);
146 extern bcm_tlv_t
*bcm_next_tlv(bcm_tlv_t
*elt
, int *buflen
);
147 extern bcm_tlv_t
*bcm_parse_tlvs(void *buf
, int buflen
, uint key
);
148 extern bcm_tlv_t
*bcm_parse_ordered_tlvs(void *buf
, int buflen
, uint key
);
149 extern void pktq_init(struct pktq
*q
, uint maxlen
, bool priority
);
150 extern bool pktenq(struct pktq
*q
, void *p
, bool lifo
);
151 extern void *pktdeq(struct pktq
*q
);
153 #define bcmlog(fmt, a1, a2)
154 #define bcmdumplog(buf, size) *buf = '\0'
155 #define bcmdumplogent(buf, idx) -1
157 #endif /* _bcmutils_h_ */
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