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/*
* 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_ */
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