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Diffstat (limited to 'package/nvram/src/include/bcmutils.h')
| -rw-r--r-- | package/nvram/src/include/bcmutils.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/package/nvram/src/include/bcmutils.h b/package/nvram/src/include/bcmutils.h new file mode 100644 index 000000000..05ad41d9d --- /dev/null +++ b/package/nvram/src/include/bcmutils.h @@ -0,0 +1,157 @@ +/* + * Misc useful os-independent macros and functions. + * + * Copyright 2004, Broadcom Corporation + * All Rights Reserved. + * + * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY + * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM + * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS + * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE. + * $Id$ + */ + +#ifndef _bcmutils_h_ +#define _bcmutils_h_ + +#ifndef MIN +#define MIN(a, b) (((a)<(b))?(a):(b)) +#endif + +#ifndef MAX +#define MAX(a, b) (((a)>(b))?(a):(b)) +#endif + +#define CEIL(x, y) (((x) + ((y)-1)) / (y)) +#define ROUNDUP(x, y) ((((ulong)(x)+((y)-1))/(y))*(y)) +#define ISALIGNED(a, x) (((uint)(a) & ((x)-1)) == 0) +#define ISPOWEROF2(x) ((((x)-1)&(x))==0) +#define OFFSETOF(type, member) ((uint) &((type *)0)->member) +#define ARRAYSIZE(a) (sizeof(a)/sizeof(a[0])) + +/* bit map related macros */ +#ifndef setbit +#define NBBY 8 /* 8 bits per byte */ +#define setbit(a,i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY)) +#define clrbit(a,i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY))) +#define isset(a,i) ((a)[(i)/NBBY] & (1<<((i)%NBBY))) +#define isclr(a,i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0) +#endif + +#define NBITS(type) (sizeof (type) * 8) + +#define _BCM_U 0x01 /* upper */ +#define _BCM_L 0x02 /* lower */ +#define _BCM_D 0x04 /* digit */ +#define _BCM_C 0x08 /* cntrl */ +#define _BCM_P 0x10 /* punct */ +#define _BCM_S 0x20 /* white space (space/lf/tab) */ +#define _BCM_X 0x40 /* hex digit */ +#define _BCM_SP 0x80 /* hard space (0x20) */ + +extern unsigned char bcm_ctype[]; +#define bcm_ismask(x) (bcm_ctype[(int)(unsigned char)(x)]) + +#define bcm_isalnum(c) ((bcm_ismask(c)&(_BCM_U|_BCM_L|_BCM_D)) != 0) +#define bcm_isalpha(c) ((bcm_ismask(c)&(_BCM_U|_BCM_L)) != 0) +#define bcm_iscntrl(c) ((bcm_ismask(c)&(_BCM_C)) != 0) +#define bcm_isdigit(c) ((bcm_ismask(c)&(_BCM_D)) != 0) +#define bcm_isgraph(c) ((bcm_ismask(c)&(_BCM_P|_BCM_U|_BCM_L|_BCM_D)) != 0) +#define bcm_islower(c) ((bcm_ismask(c)&(_BCM_L)) != 0) +#define bcm_isprint(c) ((bcm_ismask(c)&(_BCM_P|_BCM_U|_BCM_L|_BCM_D|_BCM_SP)) != 0) +#define bcm_ispunct(c) ((bcm_ismask(c)&(_BCM_P)) != 0) +#define bcm_isspace(c) ((bcm_ismask(c)&(_BCM_S)) != 0) +#define bcm_isupper(c) ((bcm_ismask(c)&(_BCM_U)) != 0) +#define bcm_isxdigit(c) ((bcm_ismask(c)&(_BCM_D|_BCM_X)) != 0) + +/* + * Spin at most 'us' microseconds while 'exp' is true. + * Caller should explicitly test 'exp' when this completes + * and take appropriate error action if 'exp' is still true. + */ +#define SPINWAIT(exp, us) { \ + uint countdown = (us) + 9; \ + while ((exp) && (countdown >= 10)) {\ + OSL_DELAY(10); \ + countdown -= 10; \ + } \ +} + +/* generic osl packet queue */ +struct pktq { + void *head; /* first packet to dequeue */ + void *tail; /* last packet to dequeue */ + uint len; /* number of queued packets */ + uint maxlen; /* maximum number of queued packets */ + bool priority; /* enqueue by packet priority */ +}; +#define DEFAULT_QLEN 128 + +#define pktq_len(q) ((q)->len) +#define pktq_avail(q) ((q)->maxlen - (q)->len) +#define pktq_head(q) ((q)->head) +#define pktq_full(q) ((q)->len >= (q)->maxlen) + +/* crc defines */ +#define CRC8_INIT_VALUE 0xff /* Initial CRC8 checksum value */ +#define CRC8_GOOD_VALUE 0x9f /* Good final CRC8 checksum value */ +#define CRC16_INIT_VALUE 0xffff /* Initial CRC16 checksum value */ +#define CRC16_GOOD_VALUE 0xf0b8 /* Good final CRC16 checksum value */ +#define CRC32_INIT_VALUE 0xffffffff /* Initial CRC32 checksum value */ +#define CRC32_GOOD_VALUE 0xdebb20e3 /* Good final CRC32 checksum value */ + +/* tag_ID/length/value_buffer tuple */ +typedef struct bcm_tlv { + uint8 id; + uint8 len; + uint8 data[1]; +} bcm_tlv_t; + +/* Check that bcm_tlv_t fits into the given buflen */ +#define bcm_valid_tlv(elt, buflen) ((buflen) >= 2 && (buflen) >= 2 + (elt)->len) + +/* buffer length for ethernet address from bcm_ether_ntoa() */ +#define ETHER_ADDR_STR_LEN 18 + +/* +* load 32-bit value from unaligned byte array +*/ +#ifdef IL_BIGENDIAN +#define load32_ua(a) ((((uint8 *)(a))[0] << 24) + (((uint8 *)(a))[1] << 16) + \ + (((uint8 *)(a))[2] << 8) + ((uint8 *)(a))[3]) +#else +#define load32_ua(a) ((((uint8 *)(a))[3] << 24) + (((uint8 *)(a))[2] << 16) + \ + (((uint8 *)(a))[1] << 8) + ((uint8 *)(a))[0]) +#endif + +/* externs */ +extern uint bcm_atoi(char *s); +extern uchar bcm_toupper(uchar c); +extern ulong bcm_strtoul(char *cp, char **endp, uint base); +extern void deadbeef(char *p, uint len); +extern void prhex(char *msg, uchar *buf, uint len); +extern void prpkt(char *msg, void *drv, void *p0); +extern uint pktcopy(void *drv, void *p, uint offset, int len, uchar *buf); +extern uint pkttotlen(void *drv, void *); +extern uchar *bcm_ether_ntoa(char *ea, char *buf); +extern int bcm_ether_atoe(char *p, char *ea); +extern void bcm_mdelay(uint ms); +extern char *getvar(char *vars, char *name); +extern int getintvar(char *vars, char *name); +extern char *bcmstrstr(char *haystack, char *needle); + +extern uint8 crc8(uint8 *p, uint nbytes, uint8 crc); +extern uint16 crc16(uint8 *p, uint nbytes, uint16 crc); +extern uint32 crc32(uint8 *p, uint nbytes, uint32 crc); +extern bcm_tlv_t *bcm_next_tlv(bcm_tlv_t *elt, int *buflen); +extern bcm_tlv_t *bcm_parse_tlvs(void *buf, int buflen, uint key); +extern bcm_tlv_t *bcm_parse_ordered_tlvs(void *buf, int buflen, uint key); +extern void pktq_init(struct pktq *q, uint maxlen, bool priority); +extern bool pktenq(struct pktq *q, void *p, bool lifo); +extern void *pktdeq(struct pktq *q); + +#define bcmlog(fmt, a1, a2) +#define bcmdumplog(buf, size) *buf = '\0' +#define bcmdumplogent(buf, idx) -1 + +#endif /* _bcmutils_h_ */ |