mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
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0bc4109776
git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@344 3c298f89-4303-0410-b956-a3cf2f4a3e73
158 lines
5.5 KiB
C
158 lines
5.5 KiB
C
/*
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* Misc useful os-independent macros and functions.
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*
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* Copyright 2004, Broadcom Corporation
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* All Rights Reserved.
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*
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* THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
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* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
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* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
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* $Id$
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*/
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#ifndef _bcmutils_h_
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#define _bcmutils_h_
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#ifndef MIN
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#define MIN(a, b) (((a)<(b))?(a):(b))
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#endif
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#ifndef MAX
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#define MAX(a, b) (((a)>(b))?(a):(b))
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#endif
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#define CEIL(x, y) (((x) + ((y)-1)) / (y))
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#define ROUNDUP(x, y) ((((ulong)(x)+((y)-1))/(y))*(y))
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#define ISALIGNED(a, x) (((uint)(a) & ((x)-1)) == 0)
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#define ISPOWEROF2(x) ((((x)-1)&(x))==0)
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#define OFFSETOF(type, member) ((uint) &((type *)0)->member)
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#define ARRAYSIZE(a) (sizeof(a)/sizeof(a[0]))
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/* bit map related macros */
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#ifndef setbit
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#define NBBY 8 /* 8 bits per byte */
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#define setbit(a,i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY))
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#define clrbit(a,i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
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#define isset(a,i) ((a)[(i)/NBBY] & (1<<((i)%NBBY)))
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#define isclr(a,i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
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#endif
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#define NBITS(type) (sizeof (type) * 8)
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#define _BCM_U 0x01 /* upper */
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#define _BCM_L 0x02 /* lower */
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#define _BCM_D 0x04 /* digit */
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#define _BCM_C 0x08 /* cntrl */
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#define _BCM_P 0x10 /* punct */
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#define _BCM_S 0x20 /* white space (space/lf/tab) */
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#define _BCM_X 0x40 /* hex digit */
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#define _BCM_SP 0x80 /* hard space (0x20) */
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extern unsigned char bcm_ctype[];
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#define bcm_ismask(x) (bcm_ctype[(int)(unsigned char)(x)])
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#define bcm_isalnum(c) ((bcm_ismask(c)&(_BCM_U|_BCM_L|_BCM_D)) != 0)
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#define bcm_isalpha(c) ((bcm_ismask(c)&(_BCM_U|_BCM_L)) != 0)
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#define bcm_iscntrl(c) ((bcm_ismask(c)&(_BCM_C)) != 0)
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#define bcm_isdigit(c) ((bcm_ismask(c)&(_BCM_D)) != 0)
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#define bcm_isgraph(c) ((bcm_ismask(c)&(_BCM_P|_BCM_U|_BCM_L|_BCM_D)) != 0)
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#define bcm_islower(c) ((bcm_ismask(c)&(_BCM_L)) != 0)
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#define bcm_isprint(c) ((bcm_ismask(c)&(_BCM_P|_BCM_U|_BCM_L|_BCM_D|_BCM_SP)) != 0)
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#define bcm_ispunct(c) ((bcm_ismask(c)&(_BCM_P)) != 0)
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#define bcm_isspace(c) ((bcm_ismask(c)&(_BCM_S)) != 0)
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#define bcm_isupper(c) ((bcm_ismask(c)&(_BCM_U)) != 0)
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#define bcm_isxdigit(c) ((bcm_ismask(c)&(_BCM_D|_BCM_X)) != 0)
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/*
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* Spin at most 'us' microseconds while 'exp' is true.
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* Caller should explicitly test 'exp' when this completes
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* and take appropriate error action if 'exp' is still true.
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*/
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#define SPINWAIT(exp, us) { \
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uint countdown = (us) + 9; \
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while ((exp) && (countdown >= 10)) {\
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OSL_DELAY(10); \
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countdown -= 10; \
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} \
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}
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/* generic osl packet queue */
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struct pktq {
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void *head; /* first packet to dequeue */
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void *tail; /* last packet to dequeue */
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uint len; /* number of queued packets */
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uint maxlen; /* maximum number of queued packets */
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bool priority; /* enqueue by packet priority */
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};
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#define DEFAULT_QLEN 128
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#define pktq_len(q) ((q)->len)
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#define pktq_avail(q) ((q)->maxlen - (q)->len)
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#define pktq_head(q) ((q)->head)
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#define pktq_full(q) ((q)->len >= (q)->maxlen)
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/* crc defines */
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#define CRC8_INIT_VALUE 0xff /* Initial CRC8 checksum value */
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#define CRC8_GOOD_VALUE 0x9f /* Good final CRC8 checksum value */
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#define CRC16_INIT_VALUE 0xffff /* Initial CRC16 checksum value */
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#define CRC16_GOOD_VALUE 0xf0b8 /* Good final CRC16 checksum value */
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#define CRC32_INIT_VALUE 0xffffffff /* Initial CRC32 checksum value */
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#define CRC32_GOOD_VALUE 0xdebb20e3 /* Good final CRC32 checksum value */
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/* tag_ID/length/value_buffer tuple */
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typedef struct bcm_tlv {
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uint8 id;
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uint8 len;
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uint8 data[1];
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} bcm_tlv_t;
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/* Check that bcm_tlv_t fits into the given buflen */
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#define bcm_valid_tlv(elt, buflen) ((buflen) >= 2 && (buflen) >= 2 + (elt)->len)
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/* buffer length for ethernet address from bcm_ether_ntoa() */
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#define ETHER_ADDR_STR_LEN 18
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/*
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* load 32-bit value from unaligned byte array
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*/
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#ifdef IL_BIGENDIAN
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#define load32_ua(a) ((((uint8 *)(a))[0] << 24) + (((uint8 *)(a))[1] << 16) + \
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(((uint8 *)(a))[2] << 8) + ((uint8 *)(a))[3])
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#else
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#define load32_ua(a) ((((uint8 *)(a))[3] << 24) + (((uint8 *)(a))[2] << 16) + \
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(((uint8 *)(a))[1] << 8) + ((uint8 *)(a))[0])
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#endif
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/* externs */
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extern uint bcm_atoi(char *s);
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extern uchar bcm_toupper(uchar c);
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extern ulong bcm_strtoul(char *cp, char **endp, uint base);
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extern void deadbeef(char *p, uint len);
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extern void prhex(char *msg, uchar *buf, uint len);
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extern void prpkt(char *msg, void *drv, void *p0);
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extern uint pktcopy(void *drv, void *p, uint offset, int len, uchar *buf);
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extern uint pkttotlen(void *drv, void *);
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extern uchar *bcm_ether_ntoa(char *ea, char *buf);
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extern int bcm_ether_atoe(char *p, char *ea);
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extern void bcm_mdelay(uint ms);
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extern char *getvar(char *vars, char *name);
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extern int getintvar(char *vars, char *name);
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extern char *bcmstrstr(char *haystack, char *needle);
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extern uint8 crc8(uint8 *p, uint nbytes, uint8 crc);
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extern uint16 crc16(uint8 *p, uint nbytes, uint16 crc);
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extern uint32 crc32(uint8 *p, uint nbytes, uint32 crc);
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extern bcm_tlv_t *bcm_next_tlv(bcm_tlv_t *elt, int *buflen);
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extern bcm_tlv_t *bcm_parse_tlvs(void *buf, int buflen, uint key);
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extern bcm_tlv_t *bcm_parse_ordered_tlvs(void *buf, int buflen, uint key);
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extern void pktq_init(struct pktq *q, uint maxlen, bool priority);
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extern bool pktenq(struct pktq *q, void *p, bool lifo);
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extern void *pktdeq(struct pktq *q);
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#define bcmlog(fmt, a1, a2)
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#define bcmdumplog(buf, size) *buf = '\0'
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#define bcmdumplogent(buf, idx) -1
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#endif /* _bcmutils_h_ */
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